summaryrefslogtreecommitdiff
path: root/src/libsystemd/libsystemd-internal
diff options
context:
space:
mode:
Diffstat (limited to 'src/libsystemd/libsystemd-internal')
-rw-r--r--src/libsystemd/libsystemd-internal/Makefile247
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/DIFFERENCES25
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/GVARIANT-SERIALIZATION110
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/PORTING-DBUS1535
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-bloom.c156
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-bloom.h43
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-common-errors.c87
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-common-errors.h86
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-container.c277
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-container.h25
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-control.c1588
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-control.h32
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-convenience.c626
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-creds.c1349
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-creds.h90
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-dump.c602
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-dump.h37
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-error.c608
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-error.h64
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-gvariant.c311
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-gvariant.h30
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-internal.c374
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-internal.h399
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-introspect.c212
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-introspect.h40
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-kernel.c1782
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-kernel.h93
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-match.c1218
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-match.h100
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-message.c5939
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-message.h244
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-objects.c2806
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-objects.h25
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-protocol.h180
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-signature.c158
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-signature.h28
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-slot.c286
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-slot.h28
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-socket.c1064
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-socket.h37
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-track.c337
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-track.h22
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-type.c176
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/bus-type.h37
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/kdbus.h980
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/sd-bus.c3791
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/test-bus-benchmark.c371
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/test-bus-chat.c560
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/test-bus-cleanup.c95
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/test-bus-creds.c50
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/test-bus-error.c232
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/test-bus-gvariant.c224
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/test-bus-introspect.c63
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/test-bus-kernel-bloom.c141
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/test-bus-kernel.c190
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/test-bus-marshal.c432
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/test-bus-match.c159
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/test-bus-objects.c555
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/test-bus-server.c216
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/test-bus-signature.c164
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/test-bus-zero-copy.c210
-rw-r--r--src/libsystemd/libsystemd-internal/sd-daemon/sd-daemon.c622
-rw-r--r--src/libsystemd/libsystemd-internal/sd-device/device-enumerator-private.h34
-rw-r--r--src/libsystemd/libsystemd-internal/sd-device/device-enumerator.c986
-rw-r--r--src/libsystemd/libsystemd-internal/sd-device/device-internal.h126
-rw-r--r--src/libsystemd/libsystemd-internal/sd-device/device-private.c1119
-rw-r--r--src/libsystemd/libsystemd-internal/sd-device/device-private.h68
-rw-r--r--src/libsystemd/libsystemd-internal/sd-device/device-util.h52
-rw-r--r--src/libsystemd/libsystemd-internal/sd-device/sd-device.c1884
-rw-r--r--src/libsystemd/libsystemd-internal/sd-event/sd-event.c2898
-rw-r--r--src/libsystemd/libsystemd-internal/sd-event/test-event.c361
-rw-r--r--src/libsystemd/libsystemd-internal/sd-hwdb/hwdb-internal.h72
-rw-r--r--src/libsystemd/libsystemd-internal/sd-hwdb/hwdb-util.h26
-rw-r--r--src/libsystemd/libsystemd-internal/sd-hwdb/sd-hwdb.c470
-rw-r--r--src/libsystemd/libsystemd-internal/sd-id128/sd-id128.c225
-rw-r--r--src/libsystemd/libsystemd-internal/sd-login/sd-login.c1062
-rw-r--r--src/libsystemd/libsystemd-internal/sd-login/test-login.c264
-rw-r--r--src/libsystemd/libsystemd-internal/sd-netlink/netlink-internal.h137
-rw-r--r--src/libsystemd/libsystemd-internal/sd-netlink/netlink-message.c961
-rw-r--r--src/libsystemd/libsystemd-internal/sd-netlink/netlink-socket.c474
-rw-r--r--src/libsystemd/libsystemd-internal/sd-netlink/netlink-types.c684
-rw-r--r--src/libsystemd/libsystemd-internal/sd-netlink/netlink-types.h94
-rw-r--r--src/libsystemd/libsystemd-internal/sd-netlink/netlink-util.c170
-rw-r--r--src/libsystemd/libsystemd-internal/sd-netlink/netlink-util.h39
-rw-r--r--src/libsystemd/libsystemd-internal/sd-netlink/rtnl-message.c702
-rw-r--r--src/libsystemd/libsystemd-internal/sd-netlink/sd-netlink.c954
-rw-r--r--src/libsystemd/libsystemd-internal/sd-netlink/test-netlink.c440
-rw-r--r--src/libsystemd/libsystemd-internal/sd-network/network-util.c37
-rw-r--r--src/libsystemd/libsystemd-internal/sd-network/network-util.h24
-rw-r--r--src/libsystemd/libsystemd-internal/sd-network/sd-network.c400
-rw-r--r--src/libsystemd/libsystemd-internal/sd-path/sd-path.c638
-rw-r--r--src/libsystemd/libsystemd-internal/sd-resolve/sd-resolve.c1245
-rw-r--r--src/libsystemd/libsystemd-internal/sd-resolve/test-resolve.c114
-rw-r--r--src/libsystemd/libsystemd-internal/sd-utf8/sd-utf8.c35
-rw-r--r--src/libsystemd/libsystemd-internal/subdir.mk29
95 files changed, 48392 insertions, 0 deletions
diff --git a/src/libsystemd/libsystemd-internal/Makefile b/src/libsystemd/libsystemd-internal/Makefile
new file mode 100644
index 0000000000..6bf0488bf5
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/Makefile
@@ -0,0 +1,247 @@
+# -*- Mode: makefile; indent-tabs-mode: t -*-
+#
+# This file is part of systemd.
+#
+# Copyright 2010-2012 Lennart Poettering
+# Copyright 2010-2012 Kay Sievers
+# Copyright 2013 Zbigniew Jędrzejewski-Szmek
+# Copyright 2013 David Strauss
+# Copyright 2016 Luke Shumaker
+#
+# systemd is free software; you can redistribute it and/or modify it
+# under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation; either version 2.1 of the License, or
+# (at your option) any later version.
+#
+# systemd is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with systemd; If not, see <http://www.gnu.org/licenses/>.
+include $(dir $(lastword $(MAKEFILE_LIST)))/../../../config.mk
+include $(topsrcdir)/build-aux/Makefile.head.mk
+
+libsystemd_internal_la_SOURCES = \
+ src/systemd/sd-bus.h \
+ src/systemd/sd-bus-protocol.h \
+ src/systemd/sd-bus-vtable.h \
+ src/systemd/sd-utf8.h \
+ src/systemd/sd-event.h \
+ src/systemd/sd-netlink.h \
+ src/systemd/sd-resolve.h \
+ src/systemd/sd-login.h \
+ src/systemd/sd-id128.h \
+ src/systemd/sd-daemon.h \
+ src/systemd/sd-path.h \
+ src/systemd/sd-network.h \
+ src/systemd/sd-hwdb.h \
+ src/systemd/sd-device.h \
+ src/libsystemd/libsystemd.sym \
+ src/libsystemd/sd-bus/sd-bus.c \
+ src/libsystemd/sd-bus/bus-control.c \
+ src/libsystemd/sd-bus/bus-control.h \
+ src/libsystemd/sd-bus/bus-error.c \
+ src/libsystemd/sd-bus/bus-error.h \
+ src/libsystemd/sd-bus/bus-common-errors.h \
+ src/libsystemd/sd-bus/bus-common-errors.c \
+ src/libsystemd/sd-bus/bus-internal.c \
+ src/libsystemd/sd-bus/bus-internal.h \
+ src/libsystemd/sd-bus/bus-socket.c \
+ src/libsystemd/sd-bus/bus-socket.h \
+ src/libsystemd/sd-bus/bus-kernel.c \
+ src/libsystemd/sd-bus/bus-kernel.h \
+ src/libsystemd/sd-bus/bus-container.c \
+ src/libsystemd/sd-bus/bus-container.h \
+ src/libsystemd/sd-bus/bus-message.c \
+ src/libsystemd/sd-bus/bus-message.h \
+ src/libsystemd/sd-bus/bus-creds.c \
+ src/libsystemd/sd-bus/bus-creds.h \
+ src/libsystemd/sd-bus/bus-signature.c \
+ src/libsystemd/sd-bus/bus-signature.h \
+ src/libsystemd/sd-bus/bus-type.c \
+ src/libsystemd/sd-bus/bus-type.h \
+ src/libsystemd/sd-bus/bus-match.c \
+ src/libsystemd/sd-bus/bus-match.h \
+ src/libsystemd/sd-bus/bus-bloom.c \
+ src/libsystemd/sd-bus/bus-bloom.h \
+ src/libsystemd/sd-bus/bus-introspect.c \
+ src/libsystemd/sd-bus/bus-introspect.h \
+ src/libsystemd/sd-bus/bus-objects.c \
+ src/libsystemd/sd-bus/bus-objects.h \
+ src/libsystemd/sd-bus/bus-gvariant.c \
+ src/libsystemd/sd-bus/bus-gvariant.h \
+ src/libsystemd/sd-bus/bus-convenience.c \
+ src/libsystemd/sd-bus/bus-track.c \
+ src/libsystemd/sd-bus/bus-track.h \
+ src/libsystemd/sd-bus/bus-slot.c \
+ src/libsystemd/sd-bus/bus-slot.h \
+ src/libsystemd/sd-bus/bus-protocol.h \
+ src/libsystemd/sd-bus/kdbus.h \
+ src/libsystemd/sd-bus/bus-dump.c \
+ src/libsystemd/sd-bus/bus-dump.h \
+ src/libsystemd/sd-utf8/sd-utf8.c \
+ src/libsystemd/sd-event/sd-event.c \
+ src/libsystemd/sd-netlink/sd-netlink.c \
+ src/libsystemd/sd-netlink/netlink-internal.h \
+ src/libsystemd/sd-netlink/netlink-message.c \
+ src/libsystemd/sd-netlink/netlink-socket.c \
+ src/libsystemd/sd-netlink/rtnl-message.c \
+ src/libsystemd/sd-netlink/netlink-types.h \
+ src/libsystemd/sd-netlink/netlink-types.c \
+ src/libsystemd/sd-netlink/netlink-util.h \
+ src/libsystemd/sd-netlink/netlink-util.c \
+ src/libsystemd/sd-netlink/local-addresses.h \
+ src/libsystemd/sd-netlink/local-addresses.c \
+ src/libsystemd/sd-id128/sd-id128.c \
+ src/libsystemd/sd-daemon/sd-daemon.c \
+ src/libsystemd/sd-login/sd-login.c \
+ src/libsystemd/sd-path/sd-path.c \
+ src/libsystemd/sd-network/sd-network.c \
+ src/libsystemd/sd-network/network-util.h \
+ src/libsystemd/sd-network/network-util.c \
+ src/libsystemd/sd-hwdb/sd-hwdb.c \
+ src/libsystemd/sd-hwdb/hwdb-util.h \
+ src/libsystemd/sd-hwdb/hwdb-internal.h \
+ src/libsystemd/sd-device/device-internal.h \
+ src/libsystemd/sd-device/device-util.h \
+ src/libsystemd/sd-device/device-enumerator.c \
+ src/libsystemd/sd-device/device-enumerator-private.h \
+ src/libsystemd/sd-device/sd-device.c \
+ src/libsystemd/sd-device/device-private.c \
+ src/libsystemd/sd-device/device-private.h \
+ src/libsystemd/sd-resolve/sd-resolve.c
+
+libsystemd_internal_la_LIBADD = \
+ libbasic.la \
+ -lresolv
+
+noinst_LTLIBRARIES += \
+ libsystemd-internal.la
+
+test_bus_marshal_SOURCES = \
+ src/libsystemd/sd-bus/test-bus-marshal.c
+
+test_bus_marshal_LDADD = \
+ libshared.la \
+ $(GLIB_LIBS) \
+ $(DBUS_LIBS)
+
+test_bus_marshal_CFLAGS = \
+ $(AM_CFLAGS) \
+ $(GLIB_CFLAGS) \
+ $(DBUS_CFLAGS)
+
+test_bus_signature_SOURCES = \
+ src/libsystemd/sd-bus/test-bus-signature.c
+
+test_bus_signature_LDADD = \
+ libshared.la
+
+test_bus_chat_SOURCES = \
+ src/libsystemd/sd-bus/test-bus-chat.c
+
+test_bus_chat_LDADD = \
+ libshared.la
+
+test_bus_cleanup_SOURCES = \
+ src/libsystemd/sd-bus/test-bus-cleanup.c
+
+test_bus_cleanup_CFLAGS = \
+ $(AM_CFLAGS) \
+ $(SECCOMP_CFLAGS)
+
+test_bus_cleanup_LDADD = \
+ libshared.la
+
+test_bus_server_SOURCES = \
+ src/libsystemd/sd-bus/test-bus-server.c
+
+test_bus_server_LDADD = \
+ libshared.la
+
+test_bus_objects_SOURCES = \
+ src/libsystemd/sd-bus/test-bus-objects.c
+
+test_bus_objects_LDADD = \
+ libshared.la
+
+test_bus_error_SOURCES = \
+ src/libsystemd/sd-bus/test-bus-error.c
+
+test_bus_error_LDADD = \
+ libshared.la
+
+test_bus_gvariant_SOURCES = \
+ src/libsystemd/sd-bus/test-bus-gvariant.c
+
+test_bus_gvariant_LDADD = \
+ libshared.la \
+ $(GLIB_LIBS)
+
+test_bus_gvariant_CFLAGS = \
+ $(AM_CFLAGS) \
+ $(GLIB_CFLAGS)
+
+test_bus_creds_SOURCES = \
+ src/libsystemd/sd-bus/test-bus-creds.c
+
+test_bus_creds_LDADD = \
+ libshared.la
+
+test_bus_match_SOURCES = \
+ src/libsystemd/sd-bus/test-bus-match.c
+
+test_bus_match_LDADD = \
+ libshared.la
+
+test_bus_kernel_SOURCES = \
+ src/libsystemd/sd-bus/test-bus-kernel.c
+
+test_bus_kernel_LDADD = \
+ libshared.la
+
+test_bus_kernel_bloom_SOURCES = \
+ src/libsystemd/sd-bus/test-bus-kernel-bloom.c
+
+test_bus_kernel_bloom_LDADD = \
+ libshared.la
+
+test_bus_benchmark_SOURCES = \
+ src/libsystemd/sd-bus/test-bus-benchmark.c
+
+test_bus_benchmark_LDADD = \
+ libshared.la
+
+test_bus_zero_copy_SOURCES = \
+ src/libsystemd/sd-bus/test-bus-zero-copy.c
+
+test_bus_zero_copy_LDADD = \
+ libshared.la
+
+test_bus_introspect_SOURCES = \
+ src/libsystemd/sd-bus/test-bus-introspect.c
+
+test_bus_introspect_LDADD = \
+ libshared.la
+
+test_event_SOURCES = \
+ src/libsystemd/sd-event/test-event.c
+
+test_event_LDADD = \
+ libshared.la
+
+test_netlink_SOURCES = \
+ src/libsystemd/sd-netlink/test-netlink.c
+
+test_netlink_LDADD = \
+ libshared.la
+
+test_resolve_SOURCES = \
+ src/libsystemd/sd-resolve/test-resolve.c
+
+test_resolve_LDADD = \
+ libshared.la
+
+include $(topsrcdir)/build-aux/Makefile.tail.mk
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/DIFFERENCES b/src/libsystemd/libsystemd-internal/sd-bus/DIFFERENCES
new file mode 100644
index 0000000000..db269675a7
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/DIFFERENCES
@@ -0,0 +1,25 @@
+Known differences between dbus1 and kdbus:
+
+- NameAcquired/NameLost is gone entirely on kdbus backends if
+ libsystemd is used. It is still added in by systemd-bus-proxyd
+ for old dbus1 clients, and it is available if libsystemd is used
+ against the classic dbus1 daemon. If you want to write compatible
+ code with libsystem-bus you need to explicitly subscribe to
+ NameOwnerChanged signals and just ignore NameAcquired/NameLost
+
+- Applications have to deal with spurious signals they didn't expect,
+ due to the probabilistic bloom filters. They need to handle this
+ anyway, given that any client can send anything to arbitrary clients
+ anyway, even in dbus1, so not much changes.
+
+- clients of the system bus when kdbus is used must roll their own
+ security. Only legacy dbus1 clients get the old XML policy enforced,
+ which is implemented by systemd-bus-proxyd.
+
+- Serial numbers of synthesized messages are always (uint32_t) -1.
+
+- NameOwnerChanged is a synthetic message, generated locally and not
+ by the driver. On dbus1 only the Disconnected message was
+ synthesized like this.
+
+- There's no standard per-session bus anymore. Only a per-user bus.
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/GVARIANT-SERIALIZATION b/src/libsystemd/libsystemd-internal/sd-bus/GVARIANT-SERIALIZATION
new file mode 100644
index 0000000000..6aeb11364a
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/GVARIANT-SERIALIZATION
@@ -0,0 +1,110 @@
+How we use GVariant for serializing D-Bus messages
+--------------------------------------------------
+
+We stay close to the original dbus1 framing as possible, but make
+certain changes to adapt for GVariant. dbus1 has the following
+framing:
+
+ 1. A fixed header of "yyyyuu"
+ 2. Additional header fields of "a(yv)"
+ 3. Padding with NUL bytes to pad up to next 8byte boundary
+ 4. The body
+
+Note that the body is not padded at the end, the complete message
+hence might have a non-aligned size. Reading multiple messages at once
+will hence result in possibly unaligned messages in memory.
+
+The header consists of the following:
+
+ y Endianness, 'l' or 'B'
+ y Message Type
+ y Flags
+ y Protocol version, '1'
+ u Length of the body, i.e. the length of part 4 above
+ u 32bit Serial number
+
+ = 12 bytes
+
+This header is then followed by the fields array, whose first value is
+a 32bit array size.
+
+When using GVariant we keep the basic structure in place, only
+slightly alter the header, and define protocol version '2'. The new
+header:
+
+ y Endianness, 'l' or 'B'
+ y Message Type
+ y Flags
+ y Protocol version, '2'
+ u Reserved, must be 0
+ t 64bit Cookie
+
+ = 16 bytes
+
+This is then followed by the GVariant fields array ("a{tv}"), and
+finally the actual body as variant (v). Putting this altogether a
+packet on dbus2 hence qualifies as a fully compliant GVariant
+structure of (yyyyuta{tv}v).
+
+For details on gvariant, see:
+
+https://people.gnome.org/~desrt/gvariant-serialisation.pdf
+
+Regarding the framing of dbus2, also see:
+
+https://wiki.gnome.org/Projects/GLib/GDBus/Version2
+
+The first four bytes of the header are defined the same way for dbus1
+and dbus2. The first bytes contain the endianess field and the
+protocol version, so that the remainder of the message can be safely
+made sense of just by looking at the first 32bit.
+
+Note that the length of the body is no longer included in the header
+on dbus2! In fact, the message size must be known in advance, from the
+underlying transport in order to parse dbus2 messages, while it is
+directly included in dbus1 message headers. This change of semantics
+is an effect of GVariant's basic design.
+
+The serial number has been renamed cookie and has been extended from
+32bit to 64bit. It is recommended to avoid the higher 32bit of the
+cookie field though, to simplify compatibility with dbus1 peers. Note
+that not only the cookie/serial field in the fixed header, but also
+the reply_cookie/reply_serial additional header field has been
+increased from 32bit to 64bit, too!
+
+The header field identifiers have been extended from 8bit to
+64bit. This has been done to simplify things (as kdbus otherwise uses
+exclusively 64bit types, unless there is a strong reason not to), and
+has no effect on the serialization size, as due to alignment for each
+8bit header field identifier 56 bits of padding had to be added.
+
+Note that the header size changed, due to these changes. However,
+consider that on dbus1 the beginning of the fields array contains the
+32bit array size (since that is how arrays are encoded on dbus1),
+thus, if one considers that size part of the header, instead of the
+array, the size of the header on dbus1 and dbus2 stays identical, at
+16 bytes.
+
+ 0 4 8 12 16
+ Common: | E | T | F | V | ...
+
+ dbus1: | (as above) | Body Length | Serial | Fields Length | Fields array ...
+
+ gvariant: | (as above) | Reserved | Cookie | Fields array ...
+
+And that's already it.
+
+Note: to simplify parsing, valid kdbus/dbus2 messages must include the
+entire fixed header and additional header fields in a single non-memfd
+message part. Also, the signature string of the body variant all the
+way to the end of the message must be in a single non-memfd part
+too. The parts for this extended header and footer can be the same
+one, and can also continue any amount of additional body bytes.
+
+Note: on kdbus only native endian messages marshalled in gvariant may
+ be sent. If a client receives a message in non-native endianness
+ or in dbus1 marshalling it shall ignore the message.
+
+Note: The GVariant "MAYBE" type is not supported, so that messages can
+ be fully converted forth and back between dbus1 and gvariant
+ representations.
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/PORTING-DBUS1 b/src/libsystemd/libsystemd-internal/sd-bus/PORTING-DBUS1
new file mode 100644
index 0000000000..2dedb28bcf
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/PORTING-DBUS1
@@ -0,0 +1,535 @@
+A few hints on supporting kdbus as backend in your favorite D-Bus library.
+
+~~~
+
+Before you read this, have a look at the DIFFERENCES and
+GVARIANT_SERIALIZATION texts you find in the same directory where you
+found this.
+
+We invite you to port your favorite D-Bus protocol implementation
+over to kdbus. However, there are a couple of complexities
+involved. On kdbus we only speak GVariant marshaling, kdbus clients
+ignore traffic in dbus1 marshaling. Thus, you need to add a second,
+GVariant compatible marshaler to your library first.
+
+After you have done that: here's the basic principle how kdbus works:
+
+You connect to a bus by opening its bus node in /sys/fs/kdbus/. All
+buses have a device node there, it starts with a numeric UID of the
+owner of the bus, followed by a dash and a string identifying the
+bus. The system bus is thus called /sys/fs/kdbus/0-system, and for user
+buses the device node is /sys/fs/kdbus/1000-user (if 1000 is your user
+id).
+
+(Before we proceed, please always keep a copy of libsystemd next
+to you, ultimately that's where the details are, this document simply
+is a rough overview to help you grok things.)
+
+CONNECTING
+
+To connect to a bus, simply open() its device node and issue the
+KDBUS_CMD_HELLO call. That's it. Now you are connected. Do not send
+Hello messages or so (as you would on dbus1), that does not exist for
+kdbus.
+
+The structure you pass to the ioctl will contain a couple of
+parameters that you need to know, to operate on the bus.
+
+There are two flags fields, one indicating features of the kdbus
+kernel side ("conn_flags"), the other one ("bus_flags") indicating
+features of the bus owner (i.e. systemd). Both flags fields are 64bit
+in width.
+
+When calling into the ioctl, you need to place your own supported
+feature bits into these fields. This tells the kernel about the
+features you support. When the ioctl returns, it will contain the
+features the kernel supports.
+
+If any of the higher 32bit are set on the two flags fields and your
+client does not know what they mean, it must disconnect. The upper
+32bit are used to indicate "incompatible" feature additions on the bus
+system, the lower 32bit indicate "compatible" feature additions. A
+client that does not support a "compatible" feature addition can go on
+communicating with the bus, however a client that does not support an
+"incompatible" feature must not proceed with the connection. When a
+client encountes such an "incompatible" feature it should immediately
+try the next bus address configured in the bus address string.
+
+The hello structure also contains another flags field "attach_flags"
+which indicates metadata that is optionally attached to all incoming
+messages. You probably want to set KDBUS_ATTACH_NAMES unconditionally
+in it. This has the effect that all well-known names of a sender are
+attached to all incoming messages. You need this information to
+implement matches that match on a message sender name correctly. Of
+course, you should only request the attachment of as little metadata
+fields as you need.
+
+The kernel will return in the "id" field your unique id. This is a
+simple numeric value. For compatibility with classic dbus1 simply
+format this as string and prefix ":1.".
+
+The kernel will also return the bloom filter size and bloom filter
+hash function number used for the signal broadcast bloom filter (see
+below).
+
+The kernel will also return the bus ID of the bus in a 128bit field.
+
+The pool size field specifies the size of the memory mapped buffer.
+After the calling the hello ioctl, you should memory map the kdbus
+fd. In this memory mapped region, the kernel will place all your incoming
+messages.
+
+SENDING MESSAGES
+
+Use the MSG_SEND ioctl to send a message to another peer. The ioctl
+takes a structure that contains a variety of fields:
+
+The flags field corresponds closely to the old dbus1 message header
+flags field, though the DONT_EXPECT_REPLY field got inverted into
+EXPECT_REPLY.
+
+The dst_id/src_id field contains the unique id of the destination and
+the sender. The sender field is overridden by the kernel usually, hence
+you shouldn't fill it in. The destination field can also take the
+special value KDBUS_DST_ID_BROADCAST for broadcast messages. For
+messages intended to a well-known name set the field to
+KDBUS_DST_ID_NAME, and attach the name in a special "items" entry to
+the message (see below).
+
+The payload field indicates the payload. For all dbus traffic it
+should carry the value 0x4442757344427573ULL. (Which encodes
+'DBusDBus').
+
+The cookie field corresponds with the "serial" field of classic
+dbus1. We simply renamed it here (and extended it to 64bit) since we
+didn't want to imply the monotonicity of the assignment the way the
+word "serial" indicates it.
+
+When sending a message that expects a reply, you need to set the
+EXPECT_REPLY flag in the message flag field. In this case you should
+also fill out the "timeout_ns" value which indicates the timeout in
+nsec for this call. If the peer does not respond in this time you will
+get a notification of a timeout. Note that this is also used for
+security purposes: a single reply messages is only allowed through the
+bus as long as the timeout has not ended. With this timeout value you
+hence "open a time window" in which the peer might respond to your
+request and the policy allows the response to go through.
+
+When sending a message that is a reply, you need to fill in the
+cookie_reply field, which is similar to the reply_serial field of
+dbus1. Note that a message cannot have EXPECT_REPLY and a reply_serial
+at the same time!
+
+This pretty much explains the ioctl header. The actual payload of the
+data is now referenced in additional items that are attached to this
+ioctl header structure at the end. When sending a message, you attach
+items of the type PAYLOAD_VEC, PAYLOAD_MEMFD, FDS, BLOOM_FILTER,
+DST_NAME to it:
+
+ KDBUS_ITEM_PAYLOAD_VEC: contains a pointer + length pair for
+ referencing arbitrary user memory. This is how you reference most
+ of your data. It's a lot like the good old iovec structure of glibc.
+
+ KDBUS_ITEM_PAYLOAD_MEMFD: for large data blocks it is preferable
+ to send prepared "memfds" (see below) over. This item contains an
+ fd for a memfd plus a size.
+
+ KDBUS_ITEM_FDS: for sending over fds attach an item of this type with
+ an array of fds.
+
+ KDBUS_ITEM_BLOOM_FILTER: the calculated bloom filter of this message,
+ only for undirected (broadcast) message.
+
+ KDBUS_ITEM_DST_NAME: for messages that are directed to a well-known
+ name (instead of a unique name), this item contains the well-known
+ name field.
+
+A single message may consists of no, one or more payload items of type
+PAYLOAD_VEC or PAYLOAD_MEMFD. D-Bus protocol implementations should
+treat them as a single block that just happens to be split up into
+multiple items. Some restrictions apply however:
+
+ The message header in its entirety must be contained in a single
+ PAYLOAD_VEC item.
+
+ You may only split your message up right in front of each GVariant
+ contained in the payload, as well is immediately before framing of a
+ Gvariant, as well after as any padding bytes if there are any. The
+ padding bytes must be wholly contained in the preceding
+ PAYLOAD_VEC/PAYLOAD_MEMFD item. You may not split up basic types
+ nor arrays of fixed types. The latter is necessary to allow APIs
+ to return direct pointers to linear arrays of numeric
+ values. Examples: The basic types "u", "s", "t" have to be in the
+ same payload item. The array of fixed types "ay", "ai" have to be
+ fully in contained in the same payload item. For an array "as" or
+ "a(si)" the only restriction however is to keep each string
+ individually in an uninterrupted item, to keep the framing of each
+ element and the array in a single uninterrupted item, however the
+ various strings might end up in different items.
+
+Note again, that splitting up messages into separate items is up to the
+implementation. Also note that the kdbus kernel side might merge
+separate items if it deems this to be useful. However, the order in
+which items are contained in the message is left untouched.
+
+PAYLOAD_MEMFD items allow zero-copy data transfer (see below regarding
+the memfd concept). Note however that the overhead of mapping these
+makes them relatively expensive, and only worth the trouble for memory
+blocks > 512K (this value appears to be quite universal across
+architectures, as we tested). Thus we recommend sending PAYLOAD_VEC
+items over for small messages and restore to PAYLOAD_MEMFD items for
+messages > 512K. Since while building up the message you might not
+know yet whether it will grow beyond this boundary a good approach is
+to simply build the message unconditionally in a memfd
+object. However, when the message is sealed to be sent away check for
+the size limit. If the size of the message is < 512K, then simply send
+the data as PAYLOAD_VEC and reuse the memfd. If it is >= 512K, seal
+the memfd and send it as PAYLOAD_MEMFD, and allocate a new memfd for
+the next message.
+
+RECEIVING MESSAGES
+
+Use the MSG_RECV ioctl to read a message from kdbus. This will return
+an offset into the pool memory map, relative to its beginning.
+
+The received message structure more or less follows the structure of
+the message originally sent. However, certain changes have been
+made. In the header the src_id field will be filled in.
+
+The payload items might have gotten merged and PAYLOAD_VEC items are
+not used. Instead, you will only find PAYLOAD_OFF and PAYLOAD_MEMFD
+items. The former contain an offset and size into your memory mapped
+pool where you find the payload.
+
+If during the HELLO ioctl you asked for getting metadata attached to
+your message, you will find additional KDBUS_ITEM_CREDS,
+KDBUS_ITEM_PID_COMM, KDBUS_ITEM_TID_COMM, KDBUS_ITEM_TIMESTAMP,
+KDBUS_ITEM_EXE, KDBUS_ITEM_CMDLINE, KDBUS_ITEM_CGROUP,
+KDBUS_ITEM_CAPS, KDBUS_ITEM_SECLABEL, KDBUS_ITEM_AUDIT items that
+contain this metadata. This metadata will be gathered from the sender
+at the point in time it sends the message. This information is
+uncached, and since it is appended by the kernel, trustable. The
+KDBUS_ITEM_SECLABEL item usually contains the SELinux security label,
+if it is used.
+
+After processing the message you need to call the KDBUS_CMD_FREE
+ioctl, which releases the message from the pool, and allows the kernel
+to store another message there. Note that the memory used by the pool
+is ordinary anonymous, swappable memory that is backed by tmpfs. Hence
+there is no need to copy the message out of it quickly, instead you
+can just leave it there as long as you need it and release it via the
+FREE ioctl only after that's done.
+
+BLOOM FILTERS
+
+The kernel does not understand dbus marshaling, it will not look into
+the message payload. To allow clients to subscribe to specific subsets
+of the broadcast matches we employ bloom filters.
+
+When broadcasting messages, a bloom filter needs to be attached to the
+message in a KDBUS_ITEM_BLOOM item (and only for broadcasting
+messages!). If you don't know what bloom filters are, read up now on
+Wikipedia. In short: they are a very efficient way how to
+probabilistically check whether a certain word is contained in a
+vocabulary. It knows no false negatives, but it does know false
+positives.
+
+The parameters for the bloom filters that need to be included in
+broadcast message is communicated to userspace as part of the hello
+response structure (see above). By default it has the parameters m=512
+(bits in the filter), k=8 (nr of hash functions). Note however, that
+this is subject to change in later versions, and userspace
+implementations must be capable of handling m values between at least
+m=8 and m=2^32, and k values between at least k=1 and k=32. The
+underlying hash function is SipHash-2-4. It is used with a number of
+constant (yet originally randomly generated) 128bit hash keys, more
+specifically:
+
+ b9,66,0b,f0,46,70,47,c1,88,75,c4,9c,54,b9,bd,15,
+ aa,a1,54,a2,e0,71,4b,39,bf,e1,dd,2e,9f,c5,4a,3b,
+ 63,fd,ae,be,cd,82,48,12,a1,6e,41,26,cb,fa,a0,c8,
+ 23,be,45,29,32,d2,46,2d,82,03,52,28,fe,37,17,f5,
+ 56,3b,bf,ee,5a,4f,43,39,af,aa,94,08,df,f0,fc,10,
+ 31,80,c8,73,c7,ea,46,d3,aa,25,75,0f,9e,4c,09,29,
+ 7d,f7,18,4b,7b,a4,44,d5,85,3c,06,e0,65,53,96,6d,
+ f2,77,e9,6f,93,b5,4e,71,9a,0c,34,88,39,25,bf,35
+
+When calculating the first bit index into the bloom filter, the
+SipHash-2-4 hash value is calculated for the input data and the first
+16 bytes of the array above as hash key. Of the resulting 8 bytes of
+output, as many full bytes are taken for the bit index as necessary,
+starting from the output's first byte. For the second bit index the
+same hash value is used, continuing with the next unused output byte,
+and so on. Each time the bytes returned by the hash function are
+depleted it is recalculated with the next 16 byte hash key from the
+array above and the same input data.
+
+For each message to send across the bus we populate the bloom filter
+with all possible matchable strings. If a client then wants to
+subscribe to messages of this type, it simply tells the kernel to test
+its own calculated bit mask against the bloom filter of each message.
+
+More specifically, the following strings are added to the bloom filter
+of each message that is broadcasted:
+
+ The string "interface:" suffixed by the interface name
+
+ The string "member:" suffixed by the member name
+
+ The string "path:" suffixed by the path name
+
+ The string "path-slash-prefix:" suffixed with the path name, and
+ also all prefixes of the path name (cut off at "/"), also prefixed
+ with "path-slash-prefix".
+
+ The string "message-type:" suffixed with the strings "signal",
+ "method_call", "error" or "method_return" for the respective message
+ type of the message.
+
+ If the first argument of the message is a string, "arg0:" suffixed
+ with the first argument.
+
+ If the first argument of the message is a string, "arg0-dot-prefix"
+ suffixed with the first argument, and also all prefixes of the
+ argument (cut off at "."), also prefixed with "arg0-dot-prefix".
+
+ If the first argument of the message is a string,
+ "arg0-slash-prefix" suffixed with the first argument, and also all
+ prefixes of the argument (cut off at "/"), also prefixed with
+ "arg0-slash-prefix".
+
+ Similar for all further arguments that are strings up to 63, for the
+ arguments and their "dot" and "slash" prefixes. On the first
+ argument that is not a string, addition to the bloom filter should be
+ stopped however.
+
+(Note that the bloom filter does not contain sender nor receiver
+names!)
+
+When a client wants to subscribe to messages matching a certain
+expression, it should calculate the bloom mask following the same
+algorithm. The kernel will then simply test the mask against the
+attached bloom filters.
+
+Note that bloom filters are probabilistic, which means that clients
+might get messages they did not expect. Your bus protocol
+implementation must be capable of dealing with these unexpected
+messages (which it needs to anyway, given that transfers are
+relatively unrestricted on kdbus and people can send you all kinds of
+non-sense).
+
+If a client connects to a bus whose bloom filter metrics (i.e. filter
+size and number of hash functions) are outside of the range the client
+supports it must immediately disconnect and continue connection with
+the next bus address of the bus connection string.
+
+INSTALLING MATCHES
+
+To install matches for broadcast messages, use the KDBUS_CMD_ADD_MATCH
+ioctl. It takes a structure that contains an encoded match expression,
+and that is followed by one or more items, which are combined in an
+AND way. (Meaning: a message is matched exactly when all items
+attached to the original ioctl struct match).
+
+To match against other user messages add a KDBUS_ITEM_BLOOM item in
+the match (see above). Note that the bloom filter does not include
+matches to the sender names. To additionally check against sender
+names, use the KDBUS_ITEM_ID (for unique id matches) and
+KDBUS_ITEM_NAME (for well-known name matches) item types.
+
+To match against kernel generated messages (see below) you should add
+items of the same type as the kernel messages include,
+i.e. KDBUS_ITEM_NAME_ADD, KDBUS_ITEM_NAME_REMOVE,
+KDBUS_ITEM_NAME_CHANGE, KDBUS_ITEM_ID_ADD, KDBUS_ITEM_ID_REMOVE and
+fill them out. Note however, that you have some wildcards in this
+case, for example the .id field of KDBUS_ITEM_ID_ADD/KDBUS_ITEM_ID_REMOVE
+structures may be set to 0 to match against any id addition/removal.
+
+Note that dbus match strings do no map 1:1 to these ioctl() calls. In
+many cases (where the match string is "underspecified") you might need
+to issue up to six different ioctl() calls for the same match. For
+example, the empty match (which matches against all messages), would
+translate into one KDBUS_ITEM_BLOOM ioctl, one KDBUS_ITEM_NAME_ADD,
+one KDBUS_ITEM_NAME_CHANGE, one KDBUS_ITEM_NAME_REMOVE, one
+KDBUS_ITEM_ID_ADD and one KDBUS_ITEM_ID_REMOVE.
+
+When creating a match, you may attach a "cookie" value to them, which
+is used for deleting this match again. The cookie can be selected freely
+by the client. When issuing KDBUS_CMD_REMOVE_MATCH, simply pass the
+same cookie as before and all matches matching the same "cookie" value
+will be removed. This is particularly handy for the case where multiple
+ioctl()s are added for a single match strings.
+
+MEMFDS
+
+memfds may be sent across kdbus via KDBUS_ITEM_PAYLOAD_MEMFD items
+attached to messages. If this is done, the data included in the memfd
+is considered part of the payload stream of a message, and are treated
+the same way as KDBUS_ITEM_PAYLOAD_VEC by the receiving side. It is
+possible to interleave KDBUS_ITEM_PAYLOAD_MEMFD and
+KDBUS_ITEM_PAYLOAD_VEC items freely, by the reader they will be
+considered a single stream of bytes in the order these items appear in
+the message, that just happens to be split up at various places
+(regarding rules how they may be split up, see above). The kernel will
+refuse taking KDBUS_ITEM_PAYLOAD_MEMFD items that refer to memfds that
+are not sealed.
+
+Note that sealed memfds may be unsealed again if they are not mapped
+you have the only fd reference to them.
+
+Alternatively to sending memfds as KDBUS_ITEM_PAYLOAD_MEMFD items
+(where they are just a part of the payload stream of a message) you can
+also simply attach any memfd to a message using
+KDBUS_ITEM_PAYLOAD_FDS. In this case, the memfd contents is not
+considered part of the payload stream of the message, but simply fds
+like any other, that happen to be attached to the message.
+
+MESSAGES FROM THE KERNEL
+
+A couple of messages previously generated by the dbus1 bus driver are
+now generated by the kernel. Since the kernel does not understand the
+payload marshaling, they are generated by the kernel in a different
+format. This is indicated with the "payload type" field of the
+messages set to 0. Library implementations should take these messages
+and synthesize traditional driver messages for them on reception.
+
+More specifically:
+
+ Instead of the NameOwnerChanged, NameLost, NameAcquired signals
+ there are kernel messages containing KDBUS_ITEM_NAME_ADD,
+ KDBUS_ITEM_NAME_REMOVE, KDBUS_ITEM_NAME_CHANGE, KDBUS_ITEM_ID_ADD,
+ KDBUS_ITEM_ID_REMOVE items are generated (each message will contain
+ exactly one of these items). Note that in libsystemd we have
+ obsoleted NameLost/NameAcquired messages, since they are entirely
+ redundant to NameOwnerChanged. This library will hence only
+ synthesize NameOwnerChanged messages from these kernel messages,
+ and never generate NameLost/NameAcquired. If your library needs to
+ stay compatible to the old dbus1 userspace, you possibly might need
+ to synthesize both a NameOwnerChanged and NameLost/NameAcquired
+ message from the same kernel message.
+
+ When a method call times out, a KDBUS_ITEM_REPLY_TIMEOUT message is
+ generated. This should be synthesized into a method error reply
+ message to the original call.
+
+ When a method call fails because the peer terminated the connection
+ before responding, a KDBUS_ITEM_REPLY_DEAD message is
+ generated. Similarly, it should be synthesized into a method error
+ reply message.
+
+For synthesized messages we recommend setting the cookie field to
+(uint32_t) -1 (and not (uint64_t) -1!), so that the cookie is not 0
+(which the dbus1 spec does not allow), but clearly recognizable as
+synthetic.
+
+Note that the KDBUS_ITEM_NAME_XYZ messages will actually inform you
+about all kinds of names, including activatable ones. Classic dbus1
+NameOwnerChanged messages OTOH are only generated when a name is
+really acquired on the bus and not just simply activatable. This means
+you must explicitly check for the case where an activatable name
+becomes acquired or an acquired name is lost and returns to be
+activatable.
+
+NAME REGISTRY
+
+To acquire names on the bus, use the KDBUS_CMD_NAME_ACQUIRE ioctl(). It
+takes a flags field similar to dbus1's RequestName() bus driver call,
+however the NO_QUEUE flag got inverted into a QUEUE flag instead.
+
+To release a previously acquired name use the KDBUS_CMD_NAME_RELEASE
+ioctl().
+
+To list acquired names use the KDBUS_CMD_CONN_INFO ioctl. It may be
+used to list unique names, well known names as well as activatable
+names and clients currently queuing for ownership of a well-known
+name. The ioctl will return an offset into the memory pool. After
+reading all the data you need, you need to release this via the
+KDBUS_CMD_FREE ioctl(), similar how you release a received message.
+
+CREDENTIALS
+
+kdbus can optionally attach various kinds of metadata about the sender at
+the point of time of sending ("credentials") to messages, on request
+of the receiver. This is both supported on directed and undirected
+(broadcast) messages. The metadata to attach is selected at time of
+the HELLO ioctl of the receiver via a flags field (see above). Note
+that clients must be able to handle that messages contain more
+metadata than they asked for themselves, to simplify implementation of
+broadcasting in the kernel. The receiver should not rely on this data
+to be around though, even though it will be correct if it happens to
+be attached. In order to avoid programming errors in applications, we
+recommend though not passing this data on to clients that did not
+explicitly ask for it.
+
+Credentials may also be queried for a well-known or unique name. Use
+the KDBUS_CMD_CONN_INFO for this. It will return an offset to the pool
+area again, which will contain the same credential items as messages
+have attached. Note that when issuing the ioctl, you can select a
+different set of credentials to gather, than what was originally requested
+for being attached to incoming messages.
+
+Credentials are always specific to the sender's domain that was
+current at the time of sending, and of the process that opened the
+bus connection at the time of opening it. Note that this latter data
+is cached!
+
+POLICY
+
+The kernel enforces only very limited policy on names. It will not do
+access filtering by userspace payload, and thus not by interface or
+method name.
+
+This ultimately means that most fine-grained policy enforcement needs
+to be done by the receiving process. We recommend using PolicyKit for
+any more complex checks. However, libraries should make simple static
+policy decisions regarding privileged/unprivileged method calls
+easy. We recommend doing this by enabling KDBUS_ATTACH_CAPS and
+KDBUS_ATTACH_CREDS for incoming messages, and then discerning client
+access by some capability, or if sender and receiver UIDs match.
+
+BUS ADDRESSES
+
+When connecting to kdbus use the "kernel:" protocol prefix in DBus
+address strings. The device node path is encoded in its "path="
+parameter.
+
+Client libraries should use the following connection string when
+connecting to the system bus:
+
+ kernel:path=/sys/fs/kdbus/0-system/bus;unix:path=/var/run/dbus/system_bus_socket
+
+This will ensure that kdbus is preferred over the legacy AF_UNIX
+socket, but compatibility is kept. For the user bus use:
+
+ kernel:path=/sys/fs/kdbus/$UID-user/bus;unix:path=$XDG_RUNTIME_DIR/bus
+
+With $UID replaced by the callers numer user ID, and $XDG_RUNTIME_DIR
+following the XDG basedir spec.
+
+Of course the $DBUS_SYSTEM_BUS_ADDRESS and $DBUS_SESSION_BUS_ADDRESS
+variables should still take precedence.
+
+DBUS SERVICE FILES
+
+Activatable services for kdbus may not use classic dbus1 service
+activation files. Instead, programs should drop in native systemd
+.service and .busname unit files, so that they are treated uniformly
+with other types of units and activation of the system.
+
+Note that this results in a major difference to classic dbus1:
+activatable bus names can be established at any time in the boot process.
+This is unlike dbus1 where activatable names are unconditionally available
+as long as dbus-daemon is running. Being able to control when
+activatable names are established is essential to allow usage of kdbus
+during early boot and in initrds, without the risk of triggering
+services too early.
+
+DISCLAIMER
+
+This all is so far just the status quo. We are putting this together, because
+we are quite confident that further API changes will be smaller, but
+to make this very clear: this is all subject to change, still!
+
+We invite you to port over your favorite dbus library to this new
+scheme, but please be prepared to make minor changes when we still
+change these interfaces!
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-bloom.c b/src/libsystemd/libsystemd-internal/sd-bus/bus-bloom.c
new file mode 100644
index 0000000000..112769fcb6
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-bloom.c
@@ -0,0 +1,156 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "bus-bloom.h"
+#include "siphash24.h"
+#include "util.h"
+
+static inline void set_bit(uint64_t filter[], unsigned long b) {
+ filter[b >> 6] |= 1ULL << (b & 63);
+}
+
+static const sd_id128_t hash_keys[] = {
+ SD_ID128_ARRAY(b9,66,0b,f0,46,70,47,c1,88,75,c4,9c,54,b9,bd,15),
+ SD_ID128_ARRAY(aa,a1,54,a2,e0,71,4b,39,bf,e1,dd,2e,9f,c5,4a,3b),
+ SD_ID128_ARRAY(63,fd,ae,be,cd,82,48,12,a1,6e,41,26,cb,fa,a0,c8),
+ SD_ID128_ARRAY(23,be,45,29,32,d2,46,2d,82,03,52,28,fe,37,17,f5),
+ SD_ID128_ARRAY(56,3b,bf,ee,5a,4f,43,39,af,aa,94,08,df,f0,fc,10),
+ SD_ID128_ARRAY(31,80,c8,73,c7,ea,46,d3,aa,25,75,0f,9e,4c,09,29),
+ SD_ID128_ARRAY(7d,f7,18,4b,7b,a4,44,d5,85,3c,06,e0,65,53,96,6d),
+ SD_ID128_ARRAY(f2,77,e9,6f,93,b5,4e,71,9a,0c,34,88,39,25,bf,35),
+};
+
+static void bloom_add_data(
+ uint64_t filter[], /* The filter bits */
+ size_t size, /* Size of the filter in bytes */
+ unsigned k, /* Number of hash functions */
+ const void *data, /* Data to hash */
+ size_t n) { /* Size of data to hash in bytes */
+
+ uint64_t h;
+ uint64_t m;
+ unsigned w, i, c = 0;
+ unsigned hash_index;
+
+ assert(size > 0);
+ assert(k > 0);
+
+ /* Determine bits in filter */
+ m = size * 8;
+
+ /* Determine how many bytes we need to generate a bit index 0..m for this filter */
+ w = (u64log2(m) + 7) / 8;
+
+ assert(w <= sizeof(uint64_t));
+
+ /* Make sure we have enough hash keys to generate m * k bits
+ * of hash value. Note that SipHash24 generates 64 bits of
+ * hash value for each 128 bits of hash key. */
+ assert(k * w <= ELEMENTSOF(hash_keys) * 8);
+
+ for (i = 0, hash_index = 0; i < k; i++) {
+ uint64_t p = 0;
+ unsigned d;
+
+ for (d = 0; d < w; d++) {
+ if (c <= 0) {
+ h = siphash24(data, n, hash_keys[hash_index++].bytes);
+ c += 8;
+ }
+
+ p = (p << 8ULL) | (uint64_t) ((uint8_t *)&h)[8 - c];
+ c--;
+ }
+
+ p &= m - 1;
+ set_bit(filter, p);
+ }
+
+ /* log_debug("bloom: adding <%.*s>", (int) n, (char*) data); */
+}
+
+void bloom_add_pair(uint64_t filter[], size_t size, unsigned k, const char *a, const char *b) {
+ size_t n;
+ char *c;
+
+ assert(filter);
+ assert(a);
+ assert(b);
+
+ n = strlen(a) + 1 + strlen(b);
+ c = alloca(n + 1);
+ strcpy(stpcpy(stpcpy(c, a), ":"), b);
+
+ bloom_add_data(filter, size, k, c, n);
+}
+
+void bloom_add_prefixes(uint64_t filter[], size_t size, unsigned k, const char *a, const char *b, char sep) {
+ size_t n;
+ char *c, *p;
+
+ assert(filter);
+ assert(a);
+ assert(b);
+
+ n = strlen(a) + 1 + strlen(b);
+ c = alloca(n + 1);
+
+ p = stpcpy(stpcpy(c, a), ":");
+ strcpy(p, b);
+
+ bloom_add_data(filter, size, k, c, n);
+
+ for (;;) {
+ char *e;
+
+ e = strrchr(p, sep);
+ if (!e)
+ break;
+
+ *(e + 1) = 0;
+ bloom_add_data(filter, size, k, c, e - c + 1);
+
+ if (e == p)
+ break;
+
+ *e = 0;
+ bloom_add_data(filter, size, k, c, e - c);
+ }
+}
+
+bool bloom_validate_parameters(size_t size, unsigned k) {
+ uint64_t m;
+ unsigned w;
+
+ if (size <= 0)
+ return false;
+
+ if (k <= 0)
+ return false;
+
+ m = size * 8;
+ w = (u64log2(m) + 7) / 8;
+ if (w > sizeof(uint64_t))
+ return false;
+
+ if (k * w > ELEMENTSOF(hash_keys) * 8)
+ return false;
+
+ return true;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-bloom.h b/src/libsystemd/libsystemd-internal/sd-bus/bus-bloom.h
new file mode 100644
index 0000000000..c824622b95
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-bloom.h
@@ -0,0 +1,43 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
+/*
+ * Our default bloom filter has the following parameters:
+ *
+ * m=512 (bits in the filter)
+ * k=8 (hash functions)
+ *
+ * We use SipHash24 as hash function with a number of (originally
+ * randomized) but fixed hash keys.
+ *
+ */
+
+#define DEFAULT_BLOOM_SIZE (512/8) /* m: filter size */
+#define DEFAULT_BLOOM_N_HASH 8 /* k: number of hash functions */
+
+void bloom_add_pair(uint64_t filter[], size_t size, unsigned n_hash, const char *a, const char *b);
+void bloom_add_prefixes(uint64_t filter[], size_t size, unsigned n_hash, const char *a, const char *b, char sep);
+
+bool bloom_validate_parameters(size_t size, unsigned n_hash);
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-common-errors.c b/src/libsystemd/libsystemd-internal/sd-bus/bus-common-errors.c
new file mode 100644
index 0000000000..a19e98e94b
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-common-errors.c
@@ -0,0 +1,87 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2014 Zbigniew Jędrzejewski-Szmek
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <errno.h>
+
+#include <systemd/sd-bus.h>
+
+#include "bus-common-errors.h"
+#include "bus-error.h"
+
+BUS_ERROR_MAP_ELF_REGISTER const sd_bus_error_map bus_common_errors[] = {
+ SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_UNIT, ENOENT),
+ SD_BUS_ERROR_MAP(BUS_ERROR_NO_UNIT_FOR_PID, ESRCH),
+ SD_BUS_ERROR_MAP(BUS_ERROR_UNIT_EXISTS, EEXIST),
+ SD_BUS_ERROR_MAP(BUS_ERROR_LOAD_FAILED, EIO),
+ SD_BUS_ERROR_MAP(BUS_ERROR_JOB_FAILED, EREMOTEIO),
+ SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_JOB, ENOENT),
+ SD_BUS_ERROR_MAP(BUS_ERROR_NOT_SUBSCRIBED, EINVAL),
+ SD_BUS_ERROR_MAP(BUS_ERROR_ALREADY_SUBSCRIBED, EINVAL),
+ SD_BUS_ERROR_MAP(BUS_ERROR_ONLY_BY_DEPENDENCY, EINVAL),
+ SD_BUS_ERROR_MAP(BUS_ERROR_TRANSACTION_JOBS_CONFLICTING, EDEADLK),
+ SD_BUS_ERROR_MAP(BUS_ERROR_TRANSACTION_ORDER_IS_CYCLIC, EDEADLK),
+ SD_BUS_ERROR_MAP(BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE, EDEADLK),
+ SD_BUS_ERROR_MAP(BUS_ERROR_UNIT_MASKED, ESHUTDOWN),
+ SD_BUS_ERROR_MAP(BUS_ERROR_UNIT_GENERATED, EADDRNOTAVAIL),
+ SD_BUS_ERROR_MAP(BUS_ERROR_UNIT_LINKED, ELOOP),
+ SD_BUS_ERROR_MAP(BUS_ERROR_JOB_TYPE_NOT_APPLICABLE, EBADR),
+ SD_BUS_ERROR_MAP(BUS_ERROR_NO_ISOLATION, EPERM),
+ SD_BUS_ERROR_MAP(BUS_ERROR_SHUTTING_DOWN, ECANCELED),
+ SD_BUS_ERROR_MAP(BUS_ERROR_SCOPE_NOT_RUNNING, EHOSTDOWN),
+
+ SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_MACHINE, ENXIO),
+ SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_IMAGE, ENOENT),
+ SD_BUS_ERROR_MAP(BUS_ERROR_NO_MACHINE_FOR_PID, ENXIO),
+ SD_BUS_ERROR_MAP(BUS_ERROR_MACHINE_EXISTS, EEXIST),
+ SD_BUS_ERROR_MAP(BUS_ERROR_NO_PRIVATE_NETWORKING, ENOSYS),
+
+ SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_SESSION, ENXIO),
+ SD_BUS_ERROR_MAP(BUS_ERROR_NO_SESSION_FOR_PID, ENXIO),
+ SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_USER, ENXIO),
+ SD_BUS_ERROR_MAP(BUS_ERROR_NO_USER_FOR_PID, ENXIO),
+ SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_SEAT, ENXIO),
+ SD_BUS_ERROR_MAP(BUS_ERROR_SESSION_NOT_ON_SEAT, EINVAL),
+ SD_BUS_ERROR_MAP(BUS_ERROR_NOT_IN_CONTROL, EINVAL),
+ SD_BUS_ERROR_MAP(BUS_ERROR_DEVICE_IS_TAKEN, EINVAL),
+ SD_BUS_ERROR_MAP(BUS_ERROR_DEVICE_NOT_TAKEN, EINVAL),
+ SD_BUS_ERROR_MAP(BUS_ERROR_OPERATION_IN_PROGRESS, EINPROGRESS),
+ SD_BUS_ERROR_MAP(BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED, EOPNOTSUPP),
+
+ SD_BUS_ERROR_MAP(BUS_ERROR_AUTOMATIC_TIME_SYNC_ENABLED, EALREADY),
+
+ SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_PROCESS, ESRCH),
+
+ SD_BUS_ERROR_MAP(BUS_ERROR_NO_NAME_SERVERS, ESRCH),
+ SD_BUS_ERROR_MAP(BUS_ERROR_INVALID_REPLY, EINVAL),
+ SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_RR, ENOENT),
+ SD_BUS_ERROR_MAP(BUS_ERROR_CNAME_LOOP, EDEADLK),
+ SD_BUS_ERROR_MAP(BUS_ERROR_ABORTED, ECANCELED),
+ SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_SERVICE, EUNATCH),
+ SD_BUS_ERROR_MAP(BUS_ERROR_DNSSEC_FAILED, EHOSTUNREACH),
+ SD_BUS_ERROR_MAP(BUS_ERROR_NO_TRUST_ANCHOR, EHOSTUNREACH),
+ SD_BUS_ERROR_MAP(BUS_ERROR_RR_TYPE_UNSUPPORTED, EOPNOTSUPP),
+ SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_LINK, ENXIO),
+ SD_BUS_ERROR_MAP(BUS_ERROR_LINK_BUSY, EBUSY),
+ SD_BUS_ERROR_MAP(BUS_ERROR_NETWORK_DOWN, ENETDOWN),
+
+ SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_TRANSFER, ENXIO),
+ SD_BUS_ERROR_MAP(BUS_ERROR_TRANSFER_IN_PROGRESS, EBUSY),
+
+ SD_BUS_ERROR_MAP_END
+};
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-common-errors.h b/src/libsystemd/libsystemd-internal/sd-bus/bus-common-errors.h
new file mode 100644
index 0000000000..c8f369cb78
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-common-errors.h
@@ -0,0 +1,86 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "bus-error.h"
+
+#define BUS_ERROR_NO_SUCH_UNIT "org.freedesktop.systemd1.NoSuchUnit"
+#define BUS_ERROR_NO_UNIT_FOR_PID "org.freedesktop.systemd1.NoUnitForPID"
+#define BUS_ERROR_UNIT_EXISTS "org.freedesktop.systemd1.UnitExists"
+#define BUS_ERROR_LOAD_FAILED "org.freedesktop.systemd1.LoadFailed"
+#define BUS_ERROR_JOB_FAILED "org.freedesktop.systemd1.JobFailed"
+#define BUS_ERROR_NO_SUCH_JOB "org.freedesktop.systemd1.NoSuchJob"
+#define BUS_ERROR_NOT_SUBSCRIBED "org.freedesktop.systemd1.NotSubscribed"
+#define BUS_ERROR_ALREADY_SUBSCRIBED "org.freedesktop.systemd1.AlreadySubscribed"
+#define BUS_ERROR_ONLY_BY_DEPENDENCY "org.freedesktop.systemd1.OnlyByDependency"
+#define BUS_ERROR_TRANSACTION_JOBS_CONFLICTING "org.freedesktop.systemd1.TransactionJobsConflicting"
+#define BUS_ERROR_TRANSACTION_ORDER_IS_CYCLIC "org.freedesktop.systemd1.TransactionOrderIsCyclic"
+#define BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE "org.freedesktop.systemd1.TransactionIsDestructive"
+#define BUS_ERROR_UNIT_MASKED "org.freedesktop.systemd1.UnitMasked"
+#define BUS_ERROR_UNIT_GENERATED "org.freedesktop.systemd1.UnitGenerated"
+#define BUS_ERROR_UNIT_LINKED "org.freedesktop.systemd1.UnitLinked"
+#define BUS_ERROR_JOB_TYPE_NOT_APPLICABLE "org.freedesktop.systemd1.JobTypeNotApplicable"
+#define BUS_ERROR_NO_ISOLATION "org.freedesktop.systemd1.NoIsolation"
+#define BUS_ERROR_SHUTTING_DOWN "org.freedesktop.systemd1.ShuttingDown"
+#define BUS_ERROR_SCOPE_NOT_RUNNING "org.freedesktop.systemd1.ScopeNotRunning"
+
+#define BUS_ERROR_NO_SUCH_MACHINE "org.freedesktop.machine1.NoSuchMachine"
+#define BUS_ERROR_NO_SUCH_IMAGE "org.freedesktop.machine1.NoSuchImage"
+#define BUS_ERROR_NO_MACHINE_FOR_PID "org.freedesktop.machine1.NoMachineForPID"
+#define BUS_ERROR_MACHINE_EXISTS "org.freedesktop.machine1.MachineExists"
+#define BUS_ERROR_NO_PRIVATE_NETWORKING "org.freedesktop.machine1.NoPrivateNetworking"
+#define BUS_ERROR_NO_SUCH_USER_MAPPING "org.freedesktop.machine1.NoSuchUserMapping"
+#define BUS_ERROR_NO_SUCH_GROUP_MAPPING "org.freedesktop.machine1.NoSuchGroupMapping"
+
+#define BUS_ERROR_NO_SUCH_SESSION "org.freedesktop.login1.NoSuchSession"
+#define BUS_ERROR_NO_SESSION_FOR_PID "org.freedesktop.login1.NoSessionForPID"
+#define BUS_ERROR_NO_SUCH_USER "org.freedesktop.login1.NoSuchUser"
+#define BUS_ERROR_NO_USER_FOR_PID "org.freedesktop.login1.NoUserForPID"
+#define BUS_ERROR_NO_SUCH_SEAT "org.freedesktop.login1.NoSuchSeat"
+#define BUS_ERROR_SESSION_NOT_ON_SEAT "org.freedesktop.login1.SessionNotOnSeat"
+#define BUS_ERROR_NOT_IN_CONTROL "org.freedesktop.login1.NotInControl"
+#define BUS_ERROR_DEVICE_IS_TAKEN "org.freedesktop.login1.DeviceIsTaken"
+#define BUS_ERROR_DEVICE_NOT_TAKEN "org.freedesktop.login1.DeviceNotTaken"
+#define BUS_ERROR_OPERATION_IN_PROGRESS "org.freedesktop.login1.OperationInProgress"
+#define BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED "org.freedesktop.login1.SleepVerbNotSupported"
+#define BUS_ERROR_SESSION_BUSY "org.freedesktop.login1.SessionBusy"
+
+#define BUS_ERROR_AUTOMATIC_TIME_SYNC_ENABLED "org.freedesktop.timedate1.AutomaticTimeSyncEnabled"
+
+#define BUS_ERROR_NO_SUCH_PROCESS "org.freedesktop.systemd1.NoSuchProcess"
+
+#define BUS_ERROR_NO_NAME_SERVERS "org.freedesktop.resolve1.NoNameServers"
+#define BUS_ERROR_INVALID_REPLY "org.freedesktop.resolve1.InvalidReply"
+#define BUS_ERROR_NO_SUCH_RR "org.freedesktop.resolve1.NoSuchRR"
+#define BUS_ERROR_CNAME_LOOP "org.freedesktop.resolve1.CNameLoop"
+#define BUS_ERROR_ABORTED "org.freedesktop.resolve1.Aborted"
+#define BUS_ERROR_NO_SUCH_SERVICE "org.freedesktop.resolve1.NoSuchService"
+#define BUS_ERROR_DNSSEC_FAILED "org.freedesktop.resolve1.DnssecFailed"
+#define BUS_ERROR_NO_TRUST_ANCHOR "org.freedesktop.resolve1.NoTrustAnchor"
+#define BUS_ERROR_RR_TYPE_UNSUPPORTED "org.freedesktop.resolve1.ResourceRecordTypeUnsupported"
+#define BUS_ERROR_NO_SUCH_LINK "org.freedesktop.resolve1.NoSuchLink"
+#define BUS_ERROR_LINK_BUSY "org.freedesktop.resolve1.LinkBusy"
+#define BUS_ERROR_NETWORK_DOWN "org.freedesktop.resolve1.NetworkDown"
+#define _BUS_ERROR_DNS "org.freedesktop.resolve1.DnsError."
+
+#define BUS_ERROR_NO_SUCH_TRANSFER "org.freedesktop.import1.NoSuchTransfer"
+#define BUS_ERROR_TRANSFER_IN_PROGRESS "org.freedesktop.import1.TransferInProgress"
+
+BUS_ERROR_MAP_ELF_USE(bus_common_errors);
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-container.c b/src/libsystemd/libsystemd-internal/sd-bus/bus-container.c
new file mode 100644
index 0000000000..3191d27ded
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-container.c
@@ -0,0 +1,277 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <fcntl.h>
+#include <unistd.h>
+
+#include "bus-container.h"
+#include "bus-internal.h"
+#include "bus-socket.h"
+#include "fd-util.h"
+#include "process-util.h"
+#include "util.h"
+
+int bus_container_connect_socket(sd_bus *b) {
+ _cleanup_close_pair_ int pair[2] = { -1, -1 };
+ _cleanup_close_ int pidnsfd = -1, mntnsfd = -1, usernsfd = -1, rootfd = -1;
+ pid_t child;
+ siginfo_t si;
+ int r, error_buf = 0;
+ ssize_t n;
+
+ assert(b);
+ assert(b->input_fd < 0);
+ assert(b->output_fd < 0);
+ assert(b->nspid > 0 || b->machine);
+
+ if (b->nspid <= 0) {
+ r = container_get_leader(b->machine, &b->nspid);
+ if (r < 0)
+ return r;
+ }
+
+ r = namespace_open(b->nspid, &pidnsfd, &mntnsfd, NULL, &usernsfd, &rootfd);
+ if (r < 0)
+ return r;
+
+ b->input_fd = socket(b->sockaddr.sa.sa_family, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
+ if (b->input_fd < 0)
+ return -errno;
+
+ b->output_fd = b->input_fd;
+
+ bus_socket_setup(b);
+
+ if (socketpair(AF_UNIX, SOCK_SEQPACKET, 0, pair) < 0)
+ return -errno;
+
+ child = fork();
+ if (child < 0)
+ return -errno;
+
+ if (child == 0) {
+ pid_t grandchild;
+
+ pair[0] = safe_close(pair[0]);
+
+ r = namespace_enter(pidnsfd, mntnsfd, -1, usernsfd, rootfd);
+ if (r < 0)
+ _exit(EXIT_FAILURE);
+
+ /* We just changed PID namespace, however it will only
+ * take effect on the children we now fork. Hence,
+ * let's fork another time, and connect from this
+ * grandchild, so that SO_PEERCRED of our connection
+ * comes from a process from within the container, and
+ * not outside of it */
+
+ grandchild = fork();
+ if (grandchild < 0)
+ _exit(EXIT_FAILURE);
+
+ if (grandchild == 0) {
+
+ r = connect(b->input_fd, &b->sockaddr.sa, b->sockaddr_size);
+ if (r < 0) {
+ /* Try to send error up */
+ error_buf = errno;
+ (void) write(pair[1], &error_buf, sizeof(error_buf));
+ _exit(EXIT_FAILURE);
+ }
+
+ _exit(EXIT_SUCCESS);
+ }
+
+ r = wait_for_terminate(grandchild, &si);
+ if (r < 0)
+ _exit(EXIT_FAILURE);
+
+ if (si.si_code != CLD_EXITED)
+ _exit(EXIT_FAILURE);
+
+ _exit(si.si_status);
+ }
+
+ pair[1] = safe_close(pair[1]);
+
+ r = wait_for_terminate(child, &si);
+ if (r < 0)
+ return r;
+
+ n = read(pair[0], &error_buf, sizeof(error_buf));
+ if (n < 0)
+ return -errno;
+
+ if (n > 0) {
+ if (n != sizeof(error_buf))
+ return -EIO;
+
+ if (error_buf < 0)
+ return -EIO;
+
+ if (error_buf == EINPROGRESS)
+ return 1;
+
+ if (error_buf > 0)
+ return -error_buf;
+ }
+
+ if (si.si_code != CLD_EXITED)
+ return -EIO;
+
+ if (si.si_status != EXIT_SUCCESS)
+ return -EIO;
+
+ return bus_socket_start_auth(b);
+}
+
+int bus_container_connect_kernel(sd_bus *b) {
+ _cleanup_close_pair_ int pair[2] = { -1, -1 };
+ _cleanup_close_ int pidnsfd = -1, mntnsfd = -1, usernsfd = -1, rootfd = -1;
+ union {
+ struct cmsghdr cmsghdr;
+ uint8_t buf[CMSG_SPACE(sizeof(int))];
+ } control = {};
+ int error_buf = 0;
+ struct iovec iov = {
+ .iov_base = &error_buf,
+ .iov_len = sizeof(error_buf),
+ };
+ struct msghdr mh = {
+ .msg_control = &control,
+ .msg_controllen = sizeof(control),
+ .msg_iov = &iov,
+ .msg_iovlen = 1,
+ };
+ struct cmsghdr *cmsg;
+ pid_t child;
+ siginfo_t si;
+ int r, fd = -1;
+ ssize_t n;
+
+ assert(b);
+ assert(b->input_fd < 0);
+ assert(b->output_fd < 0);
+ assert(b->nspid > 0 || b->machine);
+
+ if (b->nspid <= 0) {
+ r = container_get_leader(b->machine, &b->nspid);
+ if (r < 0)
+ return r;
+ }
+
+ r = namespace_open(b->nspid, &pidnsfd, &mntnsfd, NULL, &usernsfd, &rootfd);
+ if (r < 0)
+ return r;
+
+ if (socketpair(AF_UNIX, SOCK_SEQPACKET, 0, pair) < 0)
+ return -errno;
+
+ child = fork();
+ if (child < 0)
+ return -errno;
+
+ if (child == 0) {
+ pid_t grandchild;
+
+ pair[0] = safe_close(pair[0]);
+
+ r = namespace_enter(pidnsfd, mntnsfd, -1, usernsfd, rootfd);
+ if (r < 0)
+ _exit(EXIT_FAILURE);
+
+ /* We just changed PID namespace, however it will only
+ * take effect on the children we now fork. Hence,
+ * let's fork another time, and connect from this
+ * grandchild, so that kdbus only sees the credentials
+ * of this process which comes from within the
+ * container, and not outside of it */
+
+ grandchild = fork();
+ if (grandchild < 0)
+ _exit(EXIT_FAILURE);
+
+ if (grandchild == 0) {
+ fd = open(b->kernel, O_RDWR|O_NOCTTY|O_CLOEXEC);
+ if (fd < 0) {
+ /* Try to send error up */
+ error_buf = errno;
+ (void) write(pair[1], &error_buf, sizeof(error_buf));
+ _exit(EXIT_FAILURE);
+ }
+
+ r = send_one_fd(pair[1], fd, 0);
+ if (r < 0)
+ _exit(EXIT_FAILURE);
+
+ _exit(EXIT_SUCCESS);
+ }
+
+ r = wait_for_terminate(grandchild, &si);
+ if (r < 0)
+ _exit(EXIT_FAILURE);
+
+ if (si.si_code != CLD_EXITED)
+ _exit(EXIT_FAILURE);
+
+ _exit(si.si_status);
+ }
+
+ pair[1] = safe_close(pair[1]);
+
+ r = wait_for_terminate(child, &si);
+ if (r < 0)
+ return r;
+
+ n = recvmsg(pair[0], &mh, MSG_NOSIGNAL|MSG_CMSG_CLOEXEC);
+ if (n < 0)
+ return -errno;
+
+ CMSG_FOREACH(cmsg, &mh) {
+ if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) {
+ int *fds;
+ unsigned n_fds;
+
+ assert(fd < 0);
+
+ fds = (int*) CMSG_DATA(cmsg);
+ n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int);
+
+ if (n_fds != 1) {
+ close_many(fds, n_fds);
+ return -EIO;
+ }
+
+ fd = fds[0];
+ }
+ }
+
+ /* If there's an fd passed, we are good. */
+ if (fd >= 0) {
+ b->input_fd = b->output_fd = fd;
+ return bus_kernel_take_fd(b);
+ }
+
+ /* If there's an error passed, use it */
+ if (n == sizeof(error_buf) && error_buf > 0)
+ return -error_buf;
+
+ /* Otherwise, we have no clue */
+ return -EIO;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-container.h b/src/libsystemd/libsystemd-internal/sd-bus/bus-container.h
new file mode 100644
index 0000000000..5cd6d15ede
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-container.h
@@ -0,0 +1,25 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <systemd/sd-bus.h>
+
+int bus_container_connect_socket(sd_bus *b);
+int bus_container_connect_kernel(sd_bus *b);
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-control.c b/src/libsystemd/libsystemd-internal/sd-bus/bus-control.c
new file mode 100644
index 0000000000..00de530d58
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-control.c
@@ -0,0 +1,1588 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#ifdef HAVE_VALGRIND_MEMCHECK_H
+#include <valgrind/memcheck.h>
+#endif
+
+#include <errno.h>
+#include <stddef.h>
+
+#include <systemd/sd-bus.h>
+
+#include "alloc-util.h"
+#include "bus-bloom.h"
+#include "bus-control.h"
+#include "bus-internal.h"
+#include "bus-message.h"
+#include "bus-util.h"
+#include "capability-util.h"
+#include "stdio-util.h"
+#include "string-util.h"
+#include "strv.h"
+#include "user-util.h"
+
+_public_ int sd_bus_get_unique_name(sd_bus *bus, const char **unique) {
+ int r;
+
+ assert_return(bus, -EINVAL);
+ assert_return(unique, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ if (!bus->bus_client)
+ return -EINVAL;
+
+ r = bus_ensure_running(bus);
+ if (r < 0)
+ return r;
+
+ *unique = bus->unique_name;
+ return 0;
+}
+
+static int bus_request_name_kernel(sd_bus *bus, const char *name, uint64_t flags) {
+ struct kdbus_cmd *n;
+ size_t size, l;
+ int r;
+
+ assert(bus);
+ assert(name);
+
+ l = strlen(name) + 1;
+ size = offsetof(struct kdbus_cmd, items) + KDBUS_ITEM_SIZE(l);
+ n = alloca0_align(size, 8);
+ n->size = size;
+ n->flags = request_name_flags_to_kdbus(flags);
+
+ n->items[0].size = KDBUS_ITEM_HEADER_SIZE + l;
+ n->items[0].type = KDBUS_ITEM_NAME;
+ memcpy(n->items[0].str, name, l);
+
+#ifdef HAVE_VALGRIND_MEMCHECK_H
+ VALGRIND_MAKE_MEM_DEFINED(n, n->size);
+#endif
+
+ r = ioctl(bus->input_fd, KDBUS_CMD_NAME_ACQUIRE, n);
+ if (r < 0)
+ return -errno;
+
+ if (n->return_flags & KDBUS_NAME_IN_QUEUE)
+ return 0;
+
+ return 1;
+}
+
+static int bus_request_name_dbus1(sd_bus *bus, const char *name, uint64_t flags) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ uint32_t ret, param = 0;
+ int r;
+
+ assert(bus);
+ assert(name);
+
+ if (flags & SD_BUS_NAME_ALLOW_REPLACEMENT)
+ param |= BUS_NAME_ALLOW_REPLACEMENT;
+ if (flags & SD_BUS_NAME_REPLACE_EXISTING)
+ param |= BUS_NAME_REPLACE_EXISTING;
+ if (!(flags & SD_BUS_NAME_QUEUE))
+ param |= BUS_NAME_DO_NOT_QUEUE;
+
+ r = sd_bus_call_method(
+ bus,
+ "org.freedesktop.DBus",
+ "/org/freedesktop/DBus",
+ "org.freedesktop.DBus",
+ "RequestName",
+ NULL,
+ &reply,
+ "su",
+ name,
+ param);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_read(reply, "u", &ret);
+ if (r < 0)
+ return r;
+
+ if (ret == BUS_NAME_ALREADY_OWNER)
+ return -EALREADY;
+ else if (ret == BUS_NAME_EXISTS)
+ return -EEXIST;
+ else if (ret == BUS_NAME_IN_QUEUE)
+ return 0;
+ else if (ret == BUS_NAME_PRIMARY_OWNER)
+ return 1;
+
+ return -EIO;
+}
+
+_public_ int sd_bus_request_name(sd_bus *bus, const char *name, uint64_t flags) {
+ assert_return(bus, -EINVAL);
+ assert_return(name, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+ assert_return(!(flags & ~(SD_BUS_NAME_ALLOW_REPLACEMENT|SD_BUS_NAME_REPLACE_EXISTING|SD_BUS_NAME_QUEUE)), -EINVAL);
+ assert_return(service_name_is_valid(name), -EINVAL);
+ assert_return(name[0] != ':', -EINVAL);
+
+ if (!bus->bus_client)
+ return -EINVAL;
+
+ /* Don't allow requesting the special driver and local names */
+ if (STR_IN_SET(name, "org.freedesktop.DBus", "org.freedesktop.DBus.Local"))
+ return -EINVAL;
+
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
+ if (bus->is_kernel)
+ return bus_request_name_kernel(bus, name, flags);
+ else
+ return bus_request_name_dbus1(bus, name, flags);
+}
+
+static int bus_release_name_kernel(sd_bus *bus, const char *name) {
+ struct kdbus_cmd *n;
+ size_t size, l;
+ int r;
+
+ assert(bus);
+ assert(name);
+
+ l = strlen(name) + 1;
+ size = offsetof(struct kdbus_cmd, items) + KDBUS_ITEM_SIZE(l);
+ n = alloca0_align(size, 8);
+ n->size = size;
+
+ n->items[0].size = KDBUS_ITEM_HEADER_SIZE + l;
+ n->items[0].type = KDBUS_ITEM_NAME;
+ memcpy(n->items[0].str, name, l);
+
+#ifdef HAVE_VALGRIND_MEMCHECK_H
+ VALGRIND_MAKE_MEM_DEFINED(n, n->size);
+#endif
+ r = ioctl(bus->input_fd, KDBUS_CMD_NAME_RELEASE, n);
+ if (r < 0)
+ return -errno;
+
+ return 0;
+}
+
+static int bus_release_name_dbus1(sd_bus *bus, const char *name) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ uint32_t ret;
+ int r;
+
+ assert(bus);
+ assert(name);
+
+ r = sd_bus_call_method(
+ bus,
+ "org.freedesktop.DBus",
+ "/org/freedesktop/DBus",
+ "org.freedesktop.DBus",
+ "ReleaseName",
+ NULL,
+ &reply,
+ "s",
+ name);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_read(reply, "u", &ret);
+ if (r < 0)
+ return r;
+ if (ret == BUS_NAME_NON_EXISTENT)
+ return -ESRCH;
+ if (ret == BUS_NAME_NOT_OWNER)
+ return -EADDRINUSE;
+ if (ret == BUS_NAME_RELEASED)
+ return 0;
+
+ return -EINVAL;
+}
+
+_public_ int sd_bus_release_name(sd_bus *bus, const char *name) {
+ assert_return(bus, -EINVAL);
+ assert_return(name, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+ assert_return(service_name_is_valid(name), -EINVAL);
+ assert_return(name[0] != ':', -EINVAL);
+
+ if (!bus->bus_client)
+ return -EINVAL;
+
+ /* Don't allow releasing the special driver and local names */
+ if (STR_IN_SET(name, "org.freedesktop.DBus", "org.freedesktop.DBus.Local"))
+ return -EINVAL;
+
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
+ if (bus->is_kernel)
+ return bus_release_name_kernel(bus, name);
+ else
+ return bus_release_name_dbus1(bus, name);
+}
+
+static int kernel_get_list(sd_bus *bus, uint64_t flags, char ***x) {
+ struct kdbus_cmd_list cmd = {
+ .size = sizeof(cmd),
+ .flags = flags,
+ };
+ struct kdbus_info *name_list, *name;
+ uint64_t previous_id = 0;
+ int r;
+
+ /* Caller will free half-constructed list on failure... */
+
+ r = ioctl(bus->input_fd, KDBUS_CMD_LIST, &cmd);
+ if (r < 0)
+ return -errno;
+
+ name_list = (struct kdbus_info *) ((uint8_t *) bus->kdbus_buffer + cmd.offset);
+
+ KDBUS_FOREACH(name, name_list, cmd.list_size) {
+ struct kdbus_item *item;
+
+ if ((flags & KDBUS_LIST_UNIQUE) && name->id != previous_id && !(name->flags & KDBUS_HELLO_ACTIVATOR)) {
+ char *n;
+
+ if (asprintf(&n, ":1.%llu", (unsigned long long) name->id) < 0) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ r = strv_consume(x, n);
+ if (r < 0)
+ goto fail;
+
+ previous_id = name->id;
+ }
+
+ KDBUS_ITEM_FOREACH(item, name, items) {
+ if (item->type == KDBUS_ITEM_OWNED_NAME) {
+ if (service_name_is_valid(item->name.name)) {
+ r = strv_extend(x, item->name.name);
+ if (r < 0) {
+ r = -ENOMEM;
+ goto fail;
+ }
+ }
+ }
+ }
+ }
+
+ r = 0;
+
+fail:
+ bus_kernel_cmd_free(bus, cmd.offset);
+ return r;
+}
+
+static int bus_list_names_kernel(sd_bus *bus, char ***acquired, char ***activatable) {
+ _cleanup_strv_free_ char **x = NULL, **y = NULL;
+ int r;
+
+ if (acquired) {
+ r = kernel_get_list(bus, KDBUS_LIST_UNIQUE | KDBUS_LIST_NAMES, &x);
+ if (r < 0)
+ return r;
+ }
+
+ if (activatable) {
+ r = kernel_get_list(bus, KDBUS_LIST_ACTIVATORS, &y);
+ if (r < 0)
+ return r;
+
+ *activatable = y;
+ y = NULL;
+ }
+
+ if (acquired) {
+ *acquired = x;
+ x = NULL;
+ }
+
+ return 0;
+}
+
+static int bus_list_names_dbus1(sd_bus *bus, char ***acquired, char ***activatable) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ _cleanup_strv_free_ char **x = NULL, **y = NULL;
+ int r;
+
+ if (acquired) {
+ r = sd_bus_call_method(
+ bus,
+ "org.freedesktop.DBus",
+ "/org/freedesktop/DBus",
+ "org.freedesktop.DBus",
+ "ListNames",
+ NULL,
+ &reply,
+ NULL);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_read_strv(reply, &x);
+ if (r < 0)
+ return r;
+
+ reply = sd_bus_message_unref(reply);
+ }
+
+ if (activatable) {
+ r = sd_bus_call_method(
+ bus,
+ "org.freedesktop.DBus",
+ "/org/freedesktop/DBus",
+ "org.freedesktop.DBus",
+ "ListActivatableNames",
+ NULL,
+ &reply,
+ NULL);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_read_strv(reply, &y);
+ if (r < 0)
+ return r;
+
+ *activatable = y;
+ y = NULL;
+ }
+
+ if (acquired) {
+ *acquired = x;
+ x = NULL;
+ }
+
+ return 0;
+}
+
+_public_ int sd_bus_list_names(sd_bus *bus, char ***acquired, char ***activatable) {
+ assert_return(bus, -EINVAL);
+ assert_return(acquired || activatable, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ if (!bus->bus_client)
+ return -EINVAL;
+
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
+ if (bus->is_kernel)
+ return bus_list_names_kernel(bus, acquired, activatable);
+ else
+ return bus_list_names_dbus1(bus, acquired, activatable);
+}
+
+static int bus_populate_creds_from_items(
+ sd_bus *bus,
+ struct kdbus_info *info,
+ uint64_t mask,
+ sd_bus_creds *c) {
+
+ struct kdbus_item *item;
+ uint64_t m;
+ int r;
+
+ assert(bus);
+ assert(info);
+ assert(c);
+
+ KDBUS_ITEM_FOREACH(item, info, items) {
+
+ switch (item->type) {
+
+ case KDBUS_ITEM_PIDS:
+
+ if (mask & SD_BUS_CREDS_PID && item->pids.pid > 0) {
+ c->pid = (pid_t) item->pids.pid;
+ c->mask |= SD_BUS_CREDS_PID;
+ }
+
+ if (mask & SD_BUS_CREDS_TID && item->pids.tid > 0) {
+ c->tid = (pid_t) item->pids.tid;
+ c->mask |= SD_BUS_CREDS_TID;
+ }
+
+ if (mask & SD_BUS_CREDS_PPID) {
+ if (item->pids.ppid > 0) {
+ c->ppid = (pid_t) item->pids.ppid;
+ c->mask |= SD_BUS_CREDS_PPID;
+ } else if (item->pids.pid == 1) {
+ /* The structure doesn't
+ * really distinguish the case
+ * where a process has no
+ * parent and where we don't
+ * know it because it could
+ * not be translated due to
+ * namespaces. However, we
+ * know that PID 1 has no
+ * parent process, hence let's
+ * patch that in, manually. */
+ c->ppid = 0;
+ c->mask |= SD_BUS_CREDS_PPID;
+ }
+ }
+
+ break;
+
+ case KDBUS_ITEM_CREDS:
+
+ if (mask & SD_BUS_CREDS_UID && (uid_t) item->creds.uid != UID_INVALID) {
+ c->uid = (uid_t) item->creds.uid;
+ c->mask |= SD_BUS_CREDS_UID;
+ }
+
+ if (mask & SD_BUS_CREDS_EUID && (uid_t) item->creds.euid != UID_INVALID) {
+ c->euid = (uid_t) item->creds.euid;
+ c->mask |= SD_BUS_CREDS_EUID;
+ }
+
+ if (mask & SD_BUS_CREDS_SUID && (uid_t) item->creds.suid != UID_INVALID) {
+ c->suid = (uid_t) item->creds.suid;
+ c->mask |= SD_BUS_CREDS_SUID;
+ }
+
+ if (mask & SD_BUS_CREDS_FSUID && (uid_t) item->creds.fsuid != UID_INVALID) {
+ c->fsuid = (uid_t) item->creds.fsuid;
+ c->mask |= SD_BUS_CREDS_FSUID;
+ }
+
+ if (mask & SD_BUS_CREDS_GID && (gid_t) item->creds.gid != GID_INVALID) {
+ c->gid = (gid_t) item->creds.gid;
+ c->mask |= SD_BUS_CREDS_GID;
+ }
+
+ if (mask & SD_BUS_CREDS_EGID && (gid_t) item->creds.egid != GID_INVALID) {
+ c->egid = (gid_t) item->creds.egid;
+ c->mask |= SD_BUS_CREDS_EGID;
+ }
+
+ if (mask & SD_BUS_CREDS_SGID && (gid_t) item->creds.sgid != GID_INVALID) {
+ c->sgid = (gid_t) item->creds.sgid;
+ c->mask |= SD_BUS_CREDS_SGID;
+ }
+
+ if (mask & SD_BUS_CREDS_FSGID && (gid_t) item->creds.fsgid != GID_INVALID) {
+ c->fsgid = (gid_t) item->creds.fsgid;
+ c->mask |= SD_BUS_CREDS_FSGID;
+ }
+
+ break;
+
+ case KDBUS_ITEM_PID_COMM:
+ if (mask & SD_BUS_CREDS_COMM) {
+ r = free_and_strdup(&c->comm, item->str);
+ if (r < 0)
+ return r;
+
+ c->mask |= SD_BUS_CREDS_COMM;
+ }
+ break;
+
+ case KDBUS_ITEM_TID_COMM:
+ if (mask & SD_BUS_CREDS_TID_COMM) {
+ r = free_and_strdup(&c->tid_comm, item->str);
+ if (r < 0)
+ return r;
+
+ c->mask |= SD_BUS_CREDS_TID_COMM;
+ }
+ break;
+
+ case KDBUS_ITEM_EXE:
+ if (mask & SD_BUS_CREDS_EXE) {
+ r = free_and_strdup(&c->exe, item->str);
+ if (r < 0)
+ return r;
+
+ c->mask |= SD_BUS_CREDS_EXE;
+ }
+ break;
+
+ case KDBUS_ITEM_CMDLINE:
+ if (mask & SD_BUS_CREDS_CMDLINE) {
+ c->cmdline_size = item->size - offsetof(struct kdbus_item, data);
+ c->cmdline = memdup(item->data, c->cmdline_size);
+ if (!c->cmdline)
+ return -ENOMEM;
+
+ c->mask |= SD_BUS_CREDS_CMDLINE;
+ }
+ break;
+
+ case KDBUS_ITEM_CGROUP:
+ m = (SD_BUS_CREDS_CGROUP | SD_BUS_CREDS_UNIT |
+ SD_BUS_CREDS_USER_UNIT | SD_BUS_CREDS_SLICE |
+ SD_BUS_CREDS_SESSION | SD_BUS_CREDS_OWNER_UID) & mask;
+
+ if (m) {
+ r = free_and_strdup(&c->cgroup, item->str);
+ if (r < 0)
+ return r;
+
+ r = bus_get_root_path(bus);
+ if (r < 0)
+ return r;
+
+ r = free_and_strdup(&c->cgroup_root, bus->cgroup_root);
+ if (r < 0)
+ return r;
+
+ c->mask |= m;
+ }
+ break;
+
+ case KDBUS_ITEM_CAPS:
+ m = (SD_BUS_CREDS_EFFECTIVE_CAPS | SD_BUS_CREDS_PERMITTED_CAPS |
+ SD_BUS_CREDS_INHERITABLE_CAPS | SD_BUS_CREDS_BOUNDING_CAPS) & mask;
+
+ if (m) {
+ if (item->caps.last_cap != cap_last_cap() ||
+ item->size - offsetof(struct kdbus_item, caps.caps) < DIV_ROUND_UP(item->caps.last_cap, 32U) * 4 * 4)
+ return -EBADMSG;
+
+ c->capability = memdup(item->caps.caps, item->size - offsetof(struct kdbus_item, caps.caps));
+ if (!c->capability)
+ return -ENOMEM;
+
+ c->mask |= m;
+ }
+ break;
+
+ case KDBUS_ITEM_SECLABEL:
+ if (mask & SD_BUS_CREDS_SELINUX_CONTEXT) {
+ r = free_and_strdup(&c->label, item->str);
+ if (r < 0)
+ return r;
+
+ c->mask |= SD_BUS_CREDS_SELINUX_CONTEXT;
+ }
+ break;
+
+ case KDBUS_ITEM_AUDIT:
+ if (mask & SD_BUS_CREDS_AUDIT_SESSION_ID) {
+ c->audit_session_id = (uint32_t) item->audit.sessionid;
+ c->mask |= SD_BUS_CREDS_AUDIT_SESSION_ID;
+ }
+
+ if (mask & SD_BUS_CREDS_AUDIT_LOGIN_UID) {
+ c->audit_login_uid = (uid_t) item->audit.loginuid;
+ c->mask |= SD_BUS_CREDS_AUDIT_LOGIN_UID;
+ }
+ break;
+
+ case KDBUS_ITEM_OWNED_NAME:
+ if ((mask & SD_BUS_CREDS_WELL_KNOWN_NAMES) && service_name_is_valid(item->name.name)) {
+ r = strv_extend(&c->well_known_names, item->name.name);
+ if (r < 0)
+ return r;
+
+ c->mask |= SD_BUS_CREDS_WELL_KNOWN_NAMES;
+ }
+ break;
+
+ case KDBUS_ITEM_CONN_DESCRIPTION:
+ if (mask & SD_BUS_CREDS_DESCRIPTION) {
+ r = free_and_strdup(&c->description, item->str);
+ if (r < 0)
+ return r;
+
+ c->mask |= SD_BUS_CREDS_DESCRIPTION;
+ }
+ break;
+
+ case KDBUS_ITEM_AUXGROUPS:
+ if (mask & SD_BUS_CREDS_SUPPLEMENTARY_GIDS) {
+ size_t i, n;
+ uid_t *g;
+
+ n = (item->size - offsetof(struct kdbus_item, data64)) / sizeof(uint64_t);
+ g = new(gid_t, n);
+ if (!g)
+ return -ENOMEM;
+
+ for (i = 0; i < n; i++)
+ g[i] = item->data64[i];
+
+ free(c->supplementary_gids);
+ c->supplementary_gids = g;
+ c->n_supplementary_gids = n;
+
+ c->mask |= SD_BUS_CREDS_SUPPLEMENTARY_GIDS;
+ }
+ break;
+ }
+ }
+
+ return 0;
+}
+
+int bus_get_name_creds_kdbus(
+ sd_bus *bus,
+ const char *name,
+ uint64_t mask,
+ bool allow_activator,
+ sd_bus_creds **creds) {
+
+ _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *c = NULL;
+ struct kdbus_cmd_info *cmd;
+ struct kdbus_info *conn_info;
+ size_t size, l;
+ uint64_t id;
+ int r;
+
+ if (streq(name, "org.freedesktop.DBus"))
+ return -EOPNOTSUPP;
+
+ r = bus_kernel_parse_unique_name(name, &id);
+ if (r < 0)
+ return r;
+ if (r > 0) {
+ size = offsetof(struct kdbus_cmd_info, items);
+ cmd = alloca0_align(size, 8);
+ cmd->id = id;
+ } else {
+ l = strlen(name) + 1;
+ size = offsetof(struct kdbus_cmd_info, items) + KDBUS_ITEM_SIZE(l);
+ cmd = alloca0_align(size, 8);
+ cmd->items[0].size = KDBUS_ITEM_HEADER_SIZE + l;
+ cmd->items[0].type = KDBUS_ITEM_NAME;
+ memcpy(cmd->items[0].str, name, l);
+ }
+
+ /* If augmentation is on, and the bus didn't provide us
+ * the bits we want, then ask for the PID/TID so that we
+ * can read the rest from /proc. */
+ if ((mask & SD_BUS_CREDS_AUGMENT) &&
+ (mask & (SD_BUS_CREDS_PPID|
+ SD_BUS_CREDS_UID|SD_BUS_CREDS_EUID|SD_BUS_CREDS_SUID|SD_BUS_CREDS_FSUID|
+ SD_BUS_CREDS_GID|SD_BUS_CREDS_EGID|SD_BUS_CREDS_SGID|SD_BUS_CREDS_FSGID|
+ SD_BUS_CREDS_SUPPLEMENTARY_GIDS|
+ SD_BUS_CREDS_COMM|SD_BUS_CREDS_TID_COMM|SD_BUS_CREDS_EXE|SD_BUS_CREDS_CMDLINE|
+ SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_OWNER_UID|
+ SD_BUS_CREDS_EFFECTIVE_CAPS|SD_BUS_CREDS_PERMITTED_CAPS|SD_BUS_CREDS_INHERITABLE_CAPS|SD_BUS_CREDS_BOUNDING_CAPS|
+ SD_BUS_CREDS_SELINUX_CONTEXT|
+ SD_BUS_CREDS_AUDIT_SESSION_ID|SD_BUS_CREDS_AUDIT_LOGIN_UID)))
+ mask |= SD_BUS_CREDS_PID;
+
+ cmd->size = size;
+ cmd->attach_flags = attach_flags_to_kdbus(mask);
+
+ r = ioctl(bus->input_fd, KDBUS_CMD_CONN_INFO, cmd);
+ if (r < 0)
+ return -errno;
+
+ conn_info = (struct kdbus_info *) ((uint8_t *) bus->kdbus_buffer + cmd->offset);
+
+ /* Non-activated names are considered not available */
+ if (!allow_activator && (conn_info->flags & KDBUS_HELLO_ACTIVATOR)) {
+ if (name[0] == ':')
+ r = -ENXIO;
+ else
+ r = -ESRCH;
+ goto fail;
+ }
+
+ c = bus_creds_new();
+ if (!c) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ if (mask & SD_BUS_CREDS_UNIQUE_NAME) {
+ if (asprintf(&c->unique_name, ":1.%llu", (unsigned long long) conn_info->id) < 0) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ c->mask |= SD_BUS_CREDS_UNIQUE_NAME;
+ }
+
+ /* If KDBUS_ITEM_OWNED_NAME is requested then we'll get 0 of
+ them in case the service has no names. This does not mean
+ however that the list of owned names could not be
+ acquired. Hence, let's explicitly clarify that the data is
+ complete. */
+ c->mask |= mask & SD_BUS_CREDS_WELL_KNOWN_NAMES;
+
+ r = bus_populate_creds_from_items(bus, conn_info, mask, c);
+ if (r < 0)
+ goto fail;
+
+ r = bus_creds_add_more(c, mask, 0, 0);
+ if (r < 0)
+ goto fail;
+
+ if (creds) {
+ *creds = c;
+ c = NULL;
+ }
+
+ r = 0;
+
+fail:
+ bus_kernel_cmd_free(bus, cmd->offset);
+ return r;
+}
+
+static int bus_get_name_creds_dbus1(
+ sd_bus *bus,
+ const char *name,
+ uint64_t mask,
+ sd_bus_creds **creds) {
+
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply_unique = NULL, *reply = NULL;
+ _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *c = NULL;
+ const char *unique = NULL;
+ pid_t pid = 0;
+ int r;
+
+ /* Only query the owner if the caller wants to know it or if
+ * the caller just wants to check whether a name exists */
+ if ((mask & SD_BUS_CREDS_UNIQUE_NAME) || mask == 0) {
+ r = sd_bus_call_method(
+ bus,
+ "org.freedesktop.DBus",
+ "/org/freedesktop/DBus",
+ "org.freedesktop.DBus",
+ "GetNameOwner",
+ NULL,
+ &reply_unique,
+ "s",
+ name);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_read(reply_unique, "s", &unique);
+ if (r < 0)
+ return r;
+ }
+
+ if (mask != 0) {
+ c = bus_creds_new();
+ if (!c)
+ return -ENOMEM;
+
+ if ((mask & SD_BUS_CREDS_UNIQUE_NAME) && unique) {
+ c->unique_name = strdup(unique);
+ if (!c->unique_name)
+ return -ENOMEM;
+
+ c->mask |= SD_BUS_CREDS_UNIQUE_NAME;
+ }
+
+ if ((mask & SD_BUS_CREDS_PID) ||
+ ((mask & SD_BUS_CREDS_AUGMENT) &&
+ (mask & (SD_BUS_CREDS_UID|SD_BUS_CREDS_SUID|SD_BUS_CREDS_FSUID|
+ SD_BUS_CREDS_GID|SD_BUS_CREDS_EGID|SD_BUS_CREDS_SGID|SD_BUS_CREDS_FSGID|
+ SD_BUS_CREDS_SUPPLEMENTARY_GIDS|
+ SD_BUS_CREDS_COMM|SD_BUS_CREDS_EXE|SD_BUS_CREDS_CMDLINE|
+ SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_OWNER_UID|
+ SD_BUS_CREDS_EFFECTIVE_CAPS|SD_BUS_CREDS_PERMITTED_CAPS|SD_BUS_CREDS_INHERITABLE_CAPS|SD_BUS_CREDS_BOUNDING_CAPS|
+ SD_BUS_CREDS_SELINUX_CONTEXT|
+ SD_BUS_CREDS_AUDIT_SESSION_ID|SD_BUS_CREDS_AUDIT_LOGIN_UID)))) {
+
+ uint32_t u;
+
+ r = sd_bus_call_method(
+ bus,
+ "org.freedesktop.DBus",
+ "/org/freedesktop/DBus",
+ "org.freedesktop.DBus",
+ "GetConnectionUnixProcessID",
+ NULL,
+ &reply,
+ "s",
+ unique ? unique : name);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_read(reply, "u", &u);
+ if (r < 0)
+ return r;
+
+ pid = u;
+ if (mask & SD_BUS_CREDS_PID) {
+ c->pid = u;
+ c->mask |= SD_BUS_CREDS_PID;
+ }
+
+ reply = sd_bus_message_unref(reply);
+ }
+
+ if (mask & SD_BUS_CREDS_EUID) {
+ uint32_t u;
+
+ r = sd_bus_call_method(
+ bus,
+ "org.freedesktop.DBus",
+ "/org/freedesktop/DBus",
+ "org.freedesktop.DBus",
+ "GetConnectionUnixUser",
+ NULL,
+ &reply,
+ "s",
+ unique ? unique : name);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_read(reply, "u", &u);
+ if (r < 0)
+ return r;
+
+ c->euid = u;
+ c->mask |= SD_BUS_CREDS_EUID;
+
+ reply = sd_bus_message_unref(reply);
+ }
+
+ if (mask & SD_BUS_CREDS_SELINUX_CONTEXT) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ const void *p = NULL;
+ size_t sz = 0;
+
+ r = sd_bus_call_method(
+ bus,
+ "org.freedesktop.DBus",
+ "/org/freedesktop/DBus",
+ "org.freedesktop.DBus",
+ "GetConnectionSELinuxSecurityContext",
+ &error,
+ &reply,
+ "s",
+ unique ? unique : name);
+ if (r < 0) {
+ if (!sd_bus_error_has_name(&error, "org.freedesktop.DBus.Error.SELinuxSecurityContextUnknown"))
+ return r;
+ } else {
+ r = sd_bus_message_read_array(reply, 'y', &p, &sz);
+ if (r < 0)
+ return r;
+
+ c->label = strndup(p, sz);
+ if (!c->label)
+ return -ENOMEM;
+
+ c->mask |= SD_BUS_CREDS_SELINUX_CONTEXT;
+ }
+ }
+
+ r = bus_creds_add_more(c, mask, pid, 0);
+ if (r < 0)
+ return r;
+ }
+
+ if (creds) {
+ *creds = c;
+ c = NULL;
+ }
+
+ return 0;
+}
+
+_public_ int sd_bus_get_name_creds(
+ sd_bus *bus,
+ const char *name,
+ uint64_t mask,
+ sd_bus_creds **creds) {
+
+ assert_return(bus, -EINVAL);
+ assert_return(name, -EINVAL);
+ assert_return((mask & ~SD_BUS_CREDS_AUGMENT) <= _SD_BUS_CREDS_ALL, -EOPNOTSUPP);
+ assert_return(mask == 0 || creds, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+ assert_return(service_name_is_valid(name), -EINVAL);
+
+ if (!bus->bus_client)
+ return -EINVAL;
+
+ if (streq(name, "org.freedesktop.DBus.Local"))
+ return -EINVAL;
+
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
+ if (bus->is_kernel)
+ return bus_get_name_creds_kdbus(bus, name, mask, false, creds);
+ else
+ return bus_get_name_creds_dbus1(bus, name, mask, creds);
+}
+
+static int bus_get_owner_creds_kdbus(sd_bus *bus, uint64_t mask, sd_bus_creds **ret) {
+ _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *c = NULL;
+ struct kdbus_cmd_info cmd = {
+ .size = sizeof(struct kdbus_cmd_info),
+ };
+ struct kdbus_info *creator_info;
+ pid_t pid = 0;
+ int r;
+
+ c = bus_creds_new();
+ if (!c)
+ return -ENOMEM;
+
+ /* If augmentation is on, and the bus doesn't didn't allow us
+ * to get the bits we want, then ask for the PID/TID so that we
+ * can read the rest from /proc. */
+ if ((mask & SD_BUS_CREDS_AUGMENT) &&
+ (mask & (SD_BUS_CREDS_PPID|
+ SD_BUS_CREDS_UID|SD_BUS_CREDS_EUID|SD_BUS_CREDS_SUID|SD_BUS_CREDS_FSUID|
+ SD_BUS_CREDS_GID|SD_BUS_CREDS_EGID|SD_BUS_CREDS_SGID|SD_BUS_CREDS_FSGID|
+ SD_BUS_CREDS_SUPPLEMENTARY_GIDS|
+ SD_BUS_CREDS_COMM|SD_BUS_CREDS_TID_COMM|SD_BUS_CREDS_EXE|SD_BUS_CREDS_CMDLINE|
+ SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_OWNER_UID|
+ SD_BUS_CREDS_EFFECTIVE_CAPS|SD_BUS_CREDS_PERMITTED_CAPS|SD_BUS_CREDS_INHERITABLE_CAPS|SD_BUS_CREDS_BOUNDING_CAPS|
+ SD_BUS_CREDS_SELINUX_CONTEXT|
+ SD_BUS_CREDS_AUDIT_SESSION_ID|SD_BUS_CREDS_AUDIT_LOGIN_UID)))
+ mask |= SD_BUS_CREDS_PID;
+
+ cmd.attach_flags = attach_flags_to_kdbus(mask);
+
+ r = ioctl(bus->input_fd, KDBUS_CMD_BUS_CREATOR_INFO, &cmd);
+ if (r < 0)
+ return -errno;
+
+ creator_info = (struct kdbus_info *) ((uint8_t *) bus->kdbus_buffer + cmd.offset);
+
+ r = bus_populate_creds_from_items(bus, creator_info, mask, c);
+ bus_kernel_cmd_free(bus, cmd.offset);
+ if (r < 0)
+ return r;
+
+ r = bus_creds_add_more(c, mask, pid, 0);
+ if (r < 0)
+ return r;
+
+ *ret = c;
+ c = NULL;
+ return 0;
+}
+
+static int bus_get_owner_creds_dbus1(sd_bus *bus, uint64_t mask, sd_bus_creds **ret) {
+ _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *c = NULL;
+ pid_t pid = 0;
+ bool do_label;
+ int r;
+
+ assert(bus);
+
+ do_label = bus->label && (mask & SD_BUS_CREDS_SELINUX_CONTEXT);
+
+ /* Avoid allocating anything if we have no chance of returning useful data */
+ if (!bus->ucred_valid && !do_label)
+ return -ENODATA;
+
+ c = bus_creds_new();
+ if (!c)
+ return -ENOMEM;
+
+ if (bus->ucred_valid) {
+ if (bus->ucred.pid > 0) {
+ pid = c->pid = bus->ucred.pid;
+ c->mask |= SD_BUS_CREDS_PID & mask;
+ }
+
+ if (bus->ucred.uid != UID_INVALID) {
+ c->euid = bus->ucred.uid;
+ c->mask |= SD_BUS_CREDS_EUID & mask;
+ }
+
+ if (bus->ucred.gid != GID_INVALID) {
+ c->egid = bus->ucred.gid;
+ c->mask |= SD_BUS_CREDS_EGID & mask;
+ }
+ }
+
+ if (do_label) {
+ c->label = strdup(bus->label);
+ if (!c->label)
+ return -ENOMEM;
+
+ c->mask |= SD_BUS_CREDS_SELINUX_CONTEXT;
+ }
+
+ r = bus_creds_add_more(c, mask, pid, 0);
+ if (r < 0)
+ return r;
+
+ *ret = c;
+ c = NULL;
+ return 0;
+}
+
+_public_ int sd_bus_get_owner_creds(sd_bus *bus, uint64_t mask, sd_bus_creds **ret) {
+ assert_return(bus, -EINVAL);
+ assert_return((mask & ~SD_BUS_CREDS_AUGMENT) <= _SD_BUS_CREDS_ALL, -EOPNOTSUPP);
+ assert_return(ret, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
+ if (bus->is_kernel)
+ return bus_get_owner_creds_kdbus(bus, mask, ret);
+ else
+ return bus_get_owner_creds_dbus1(bus, mask, ret);
+}
+
+static int add_name_change_match(sd_bus *bus,
+ uint64_t cookie,
+ const char *name,
+ const char *old_owner,
+ const char *new_owner) {
+
+ uint64_t name_id = KDBUS_MATCH_ID_ANY, old_owner_id = 0, new_owner_id = 0;
+ int is_name_id = -1, r;
+ struct kdbus_item *item;
+
+ assert(bus);
+
+ /* If we encounter a match that could match against
+ * NameOwnerChanged messages, then we need to create
+ * KDBUS_ITEM_NAME_{ADD,REMOVE,CHANGE} and
+ * KDBUS_ITEM_ID_{ADD,REMOVE} matches for it, possibly
+ * multiple if the match is underspecified.
+ *
+ * The NameOwnerChanged signals take three parameters with
+ * unique or well-known names, but only some forms actually
+ * exist:
+ *
+ * WELLKNOWN, "", UNIQUE → KDBUS_ITEM_NAME_ADD
+ * WELLKNOWN, UNIQUE, "" → KDBUS_ITEM_NAME_REMOVE
+ * WELLKNOWN, UNIQUE, UNIQUE → KDBUS_ITEM_NAME_CHANGE
+ * UNIQUE, "", UNIQUE → KDBUS_ITEM_ID_ADD
+ * UNIQUE, UNIQUE, "" → KDBUS_ITEM_ID_REMOVE
+ *
+ * For the latter two the two unique names must be identical.
+ *
+ * */
+
+ if (name) {
+ is_name_id = bus_kernel_parse_unique_name(name, &name_id);
+ if (is_name_id < 0)
+ return 0;
+ }
+
+ if (!isempty(old_owner)) {
+ r = bus_kernel_parse_unique_name(old_owner, &old_owner_id);
+ if (r < 0)
+ return 0;
+ if (r == 0)
+ return 0;
+ if (is_name_id > 0 && old_owner_id != name_id)
+ return 0;
+ } else
+ old_owner_id = KDBUS_MATCH_ID_ANY;
+
+ if (!isempty(new_owner)) {
+ r = bus_kernel_parse_unique_name(new_owner, &new_owner_id);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return 0;
+ if (is_name_id > 0 && new_owner_id != name_id)
+ return 0;
+ } else
+ new_owner_id = KDBUS_MATCH_ID_ANY;
+
+ if (is_name_id <= 0) {
+ struct kdbus_cmd_match *m;
+ size_t sz, l;
+
+ /* If the name argument is missing or is a well-known
+ * name, then add KDBUS_ITEM_NAME_{ADD,REMOVE,CHANGE}
+ * matches for it */
+
+ l = name ? strlen(name) + 1 : 0;
+
+ sz = ALIGN8(offsetof(struct kdbus_cmd_match, items) +
+ offsetof(struct kdbus_item, name_change) +
+ offsetof(struct kdbus_notify_name_change, name) +
+ l);
+
+ m = alloca0_align(sz, 8);
+ m->size = sz;
+ m->cookie = cookie;
+
+ item = m->items;
+ item->size =
+ offsetof(struct kdbus_item, name_change) +
+ offsetof(struct kdbus_notify_name_change, name) +
+ l;
+
+ item->name_change.old_id.id = old_owner_id;
+ item->name_change.new_id.id = new_owner_id;
+
+ memcpy_safe(item->name_change.name, name, l);
+
+ /* If the old name is unset or empty, then
+ * this can match against added names */
+ if (isempty(old_owner)) {
+ item->type = KDBUS_ITEM_NAME_ADD;
+
+ r = ioctl(bus->input_fd, KDBUS_CMD_MATCH_ADD, m);
+ if (r < 0)
+ return -errno;
+ }
+
+ /* If the new name is unset or empty, then
+ * this can match against removed names */
+ if (isempty(new_owner)) {
+ item->type = KDBUS_ITEM_NAME_REMOVE;
+
+ r = ioctl(bus->input_fd, KDBUS_CMD_MATCH_ADD, m);
+ if (r < 0)
+ return -errno;
+ }
+
+ /* The CHANGE match we need in either case, because
+ * what is reported as a name change by the kernel
+ * might just be an owner change between starter and
+ * normal clients. For userspace such a change should
+ * be considered a removal/addition, hence let's
+ * subscribe to this unconditionally. */
+ item->type = KDBUS_ITEM_NAME_CHANGE;
+ r = ioctl(bus->input_fd, KDBUS_CMD_MATCH_ADD, m);
+ if (r < 0)
+ return -errno;
+ }
+
+ if (is_name_id != 0) {
+ struct kdbus_cmd_match *m;
+ uint64_t sz;
+
+ /* If the name argument is missing or is a unique
+ * name, then add KDBUS_ITEM_ID_{ADD,REMOVE} matches
+ * for it */
+
+ sz = ALIGN8(offsetof(struct kdbus_cmd_match, items) +
+ offsetof(struct kdbus_item, id_change) +
+ sizeof(struct kdbus_notify_id_change));
+
+ m = alloca0_align(sz, 8);
+ m->size = sz;
+ m->cookie = cookie;
+
+ item = m->items;
+ item->size =
+ offsetof(struct kdbus_item, id_change) +
+ sizeof(struct kdbus_notify_id_change);
+ item->id_change.id = name_id;
+
+ /* If the old name is unset or empty, then this can
+ * match against added ids */
+ if (isempty(old_owner)) {
+ item->type = KDBUS_ITEM_ID_ADD;
+ if (!isempty(new_owner))
+ item->id_change.id = new_owner_id;
+
+ r = ioctl(bus->input_fd, KDBUS_CMD_MATCH_ADD, m);
+ if (r < 0)
+ return -errno;
+ }
+
+ /* If thew new name is unset or empty, then this can
+ * match against removed ids */
+ if (isempty(new_owner)) {
+ item->type = KDBUS_ITEM_ID_REMOVE;
+ if (!isempty(old_owner))
+ item->id_change.id = old_owner_id;
+
+ r = ioctl(bus->input_fd, KDBUS_CMD_MATCH_ADD, m);
+ if (r < 0)
+ return -errno;
+ }
+ }
+
+ return 0;
+}
+
+int bus_add_match_internal_kernel(
+ sd_bus *bus,
+ struct bus_match_component *components,
+ unsigned n_components,
+ uint64_t cookie) {
+
+ struct kdbus_cmd_match *m;
+ struct kdbus_item *item;
+ uint64_t *bloom;
+ size_t sz;
+ const char *sender = NULL;
+ size_t sender_length = 0;
+ uint64_t src_id = KDBUS_MATCH_ID_ANY, dst_id = KDBUS_MATCH_ID_ANY;
+ bool using_bloom = false;
+ unsigned i;
+ bool matches_name_change = true;
+ const char *name_change_arg[3] = {};
+ int r;
+
+ assert(bus);
+
+ /* Monitor streams don't support matches, make this a NOP */
+ if (bus->hello_flags & KDBUS_HELLO_MONITOR)
+ return 0;
+
+ bloom = alloca0(bus->bloom_size);
+
+ sz = ALIGN8(offsetof(struct kdbus_cmd_match, items));
+
+ for (i = 0; i < n_components; i++) {
+ struct bus_match_component *c = &components[i];
+
+ switch (c->type) {
+
+ case BUS_MATCH_SENDER:
+ if (!streq(c->value_str, "org.freedesktop.DBus"))
+ matches_name_change = false;
+
+ r = bus_kernel_parse_unique_name(c->value_str, &src_id);
+ if (r < 0)
+ return r;
+ else if (r > 0)
+ sz += ALIGN8(offsetof(struct kdbus_item, id) + sizeof(uint64_t));
+ else {
+ sender = c->value_str;
+ sender_length = strlen(sender);
+ sz += ALIGN8(offsetof(struct kdbus_item, str) + sender_length + 1);
+ }
+
+ break;
+
+ case BUS_MATCH_MESSAGE_TYPE:
+ if (c->value_u8 != SD_BUS_MESSAGE_SIGNAL)
+ matches_name_change = false;
+
+ bloom_add_pair(bloom, bus->bloom_size, bus->bloom_n_hash, "message-type", bus_message_type_to_string(c->value_u8));
+ using_bloom = true;
+ break;
+
+ case BUS_MATCH_INTERFACE:
+ if (!streq(c->value_str, "org.freedesktop.DBus"))
+ matches_name_change = false;
+
+ bloom_add_pair(bloom, bus->bloom_size, bus->bloom_n_hash, "interface", c->value_str);
+ using_bloom = true;
+ break;
+
+ case BUS_MATCH_MEMBER:
+ if (!streq(c->value_str, "NameOwnerChanged"))
+ matches_name_change = false;
+
+ bloom_add_pair(bloom, bus->bloom_size, bus->bloom_n_hash, "member", c->value_str);
+ using_bloom = true;
+ break;
+
+ case BUS_MATCH_PATH:
+ if (!streq(c->value_str, "/org/freedesktop/DBus"))
+ matches_name_change = false;
+
+ bloom_add_pair(bloom, bus->bloom_size, bus->bloom_n_hash, "path", c->value_str);
+ using_bloom = true;
+ break;
+
+ case BUS_MATCH_PATH_NAMESPACE:
+ bloom_add_pair(bloom, bus->bloom_size, bus->bloom_n_hash, "path-slash-prefix", c->value_str);
+ using_bloom = true;
+ break;
+
+ case BUS_MATCH_ARG...BUS_MATCH_ARG_LAST: {
+ char buf[sizeof("arg")-1 + 2 + 1];
+
+ if (c->type - BUS_MATCH_ARG < 3)
+ name_change_arg[c->type - BUS_MATCH_ARG] = c->value_str;
+
+ xsprintf(buf, "arg%i", c->type - BUS_MATCH_ARG);
+ bloom_add_pair(bloom, bus->bloom_size, bus->bloom_n_hash, buf, c->value_str);
+ using_bloom = true;
+ break;
+ }
+
+ case BUS_MATCH_ARG_HAS...BUS_MATCH_ARG_HAS_LAST: {
+ char buf[sizeof("arg")-1 + 2 + sizeof("-has")];
+
+ xsprintf(buf, "arg%i-has", c->type - BUS_MATCH_ARG_HAS);
+ bloom_add_pair(bloom, bus->bloom_size, bus->bloom_n_hash, buf, c->value_str);
+ using_bloom = true;
+ break;
+ }
+
+ case BUS_MATCH_ARG_PATH...BUS_MATCH_ARG_PATH_LAST:
+ /*
+ * XXX: DBus spec defines arg[0..63]path= matching to be
+ * a two-way glob. That is, if either string is a prefix
+ * of the other, it matches.
+ * This is really hard to realize in bloom-filters, as
+ * we would have to create a bloom-match for each prefix
+ * of @c->value_str. This is excessive, hence we just
+ * ignore all those matches and accept everything from
+ * the kernel. People should really avoid those matches.
+ * If they're used in real-life some day, we will have
+ * to properly support multiple-matches here.
+ */
+ break;
+
+ case BUS_MATCH_ARG_NAMESPACE...BUS_MATCH_ARG_NAMESPACE_LAST: {
+ char buf[sizeof("arg")-1 + 2 + sizeof("-dot-prefix")];
+
+ xsprintf(buf, "arg%i-dot-prefix", c->type - BUS_MATCH_ARG_NAMESPACE);
+ bloom_add_pair(bloom, bus->bloom_size, bus->bloom_n_hash, buf, c->value_str);
+ using_bloom = true;
+ break;
+ }
+
+ case BUS_MATCH_DESTINATION:
+ /*
+ * Kernel only supports matching on destination IDs, but
+ * not on destination names. So just skip the
+ * destination name restriction and verify it in
+ * user-space on retrieval.
+ */
+ r = bus_kernel_parse_unique_name(c->value_str, &dst_id);
+ if (r < 0)
+ return r;
+ else if (r > 0)
+ sz += ALIGN8(offsetof(struct kdbus_item, id) + sizeof(uint64_t));
+
+ /* if not a broadcast, it cannot be a name-change */
+ if (r <= 0 || dst_id != KDBUS_DST_ID_BROADCAST)
+ matches_name_change = false;
+
+ break;
+
+ case BUS_MATCH_ROOT:
+ case BUS_MATCH_VALUE:
+ case BUS_MATCH_LEAF:
+ case _BUS_MATCH_NODE_TYPE_MAX:
+ case _BUS_MATCH_NODE_TYPE_INVALID:
+ assert_not_reached("Invalid match type?");
+ }
+ }
+
+ if (using_bloom)
+ sz += ALIGN8(offsetof(struct kdbus_item, data64) + bus->bloom_size);
+
+ m = alloca0_align(sz, 8);
+ m->size = sz;
+ m->cookie = cookie;
+
+ item = m->items;
+
+ if (src_id != KDBUS_MATCH_ID_ANY) {
+ item->size = offsetof(struct kdbus_item, id) + sizeof(uint64_t);
+ item->type = KDBUS_ITEM_ID;
+ item->id = src_id;
+ item = KDBUS_ITEM_NEXT(item);
+ }
+
+ if (dst_id != KDBUS_MATCH_ID_ANY) {
+ item->size = offsetof(struct kdbus_item, id) + sizeof(uint64_t);
+ item->type = KDBUS_ITEM_DST_ID;
+ item->id = dst_id;
+ item = KDBUS_ITEM_NEXT(item);
+ }
+
+ if (using_bloom) {
+ item->size = offsetof(struct kdbus_item, data64) + bus->bloom_size;
+ item->type = KDBUS_ITEM_BLOOM_MASK;
+ memcpy(item->data64, bloom, bus->bloom_size);
+ item = KDBUS_ITEM_NEXT(item);
+ }
+
+ if (sender) {
+ item->size = offsetof(struct kdbus_item, str) + sender_length + 1;
+ item->type = KDBUS_ITEM_NAME;
+ memcpy(item->str, sender, sender_length + 1);
+ }
+
+ r = ioctl(bus->input_fd, KDBUS_CMD_MATCH_ADD, m);
+ if (r < 0)
+ return -errno;
+
+ if (matches_name_change) {
+
+ /* If this match could theoretically match
+ * NameOwnerChanged messages, we need to
+ * install a second non-bloom filter explitly
+ * for it */
+
+ r = add_name_change_match(bus, cookie, name_change_arg[0], name_change_arg[1], name_change_arg[2]);
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
+#define internal_match(bus, m) \
+ ((bus)->hello_flags & KDBUS_HELLO_MONITOR \
+ ? (isempty(m) ? "eavesdrop='true'" : strjoina((m), ",eavesdrop='true'")) \
+ : (m))
+
+static int bus_add_match_internal_dbus1(
+ sd_bus *bus,
+ const char *match) {
+
+ const char *e;
+
+ assert(bus);
+ assert(match);
+
+ e = internal_match(bus, match);
+
+ return sd_bus_call_method(
+ bus,
+ "org.freedesktop.DBus",
+ "/org/freedesktop/DBus",
+ "org.freedesktop.DBus",
+ "AddMatch",
+ NULL,
+ NULL,
+ "s",
+ e);
+}
+
+int bus_add_match_internal(
+ sd_bus *bus,
+ const char *match,
+ struct bus_match_component *components,
+ unsigned n_components,
+ uint64_t cookie) {
+
+ assert(bus);
+
+ if (!bus->bus_client)
+ return -EINVAL;
+
+ if (bus->is_kernel)
+ return bus_add_match_internal_kernel(bus, components, n_components, cookie);
+ else
+ return bus_add_match_internal_dbus1(bus, match);
+}
+
+int bus_remove_match_internal_kernel(
+ sd_bus *bus,
+ uint64_t cookie) {
+
+ struct kdbus_cmd_match m = {
+ .size = offsetof(struct kdbus_cmd_match, items),
+ .cookie = cookie,
+ };
+ int r;
+
+ assert(bus);
+
+ /* Monitor streams don't support matches, make this a NOP */
+ if (bus->hello_flags & KDBUS_HELLO_MONITOR)
+ return 0;
+
+ r = ioctl(bus->input_fd, KDBUS_CMD_MATCH_REMOVE, &m);
+ if (r < 0)
+ return -errno;
+
+ return 0;
+}
+
+static int bus_remove_match_internal_dbus1(
+ sd_bus *bus,
+ const char *match) {
+
+ const char *e;
+
+ assert(bus);
+ assert(match);
+
+ e = internal_match(bus, match);
+
+ return sd_bus_call_method(
+ bus,
+ "org.freedesktop.DBus",
+ "/org/freedesktop/DBus",
+ "org.freedesktop.DBus",
+ "RemoveMatch",
+ NULL,
+ NULL,
+ "s",
+ e);
+}
+
+int bus_remove_match_internal(
+ sd_bus *bus,
+ const char *match,
+ uint64_t cookie) {
+
+ assert(bus);
+
+ if (!bus->bus_client)
+ return -EINVAL;
+
+ if (bus->is_kernel)
+ return bus_remove_match_internal_kernel(bus, cookie);
+ else
+ return bus_remove_match_internal_dbus1(bus, match);
+}
+
+_public_ int sd_bus_get_name_machine_id(sd_bus *bus, const char *name, sd_id128_t *machine) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL, *m = NULL;
+ const char *mid;
+ int r;
+
+ assert_return(bus, -EINVAL);
+ assert_return(name, -EINVAL);
+ assert_return(machine, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+ assert_return(service_name_is_valid(name), -EINVAL);
+
+ if (!bus->bus_client)
+ return -EINVAL;
+
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
+ if (streq_ptr(name, bus->unique_name))
+ return sd_id128_get_machine(machine);
+
+ r = sd_bus_message_new_method_call(
+ bus,
+ &m,
+ name,
+ "/",
+ "org.freedesktop.DBus.Peer",
+ "GetMachineId");
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_set_auto_start(m, false);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_call(bus, m, 0, NULL, &reply);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_read(reply, "s", &mid);
+ if (r < 0)
+ return r;
+
+ return sd_id128_from_string(mid, machine);
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-control.h b/src/libsystemd/libsystemd-internal/sd-bus/bus-control.h
new file mode 100644
index 0000000000..229c95efb0
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-control.h
@@ -0,0 +1,32 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <systemd/sd-bus.h>
+
+#include "bus-match.h"
+
+int bus_add_match_internal(sd_bus *bus, const char *match, struct bus_match_component *components, unsigned n_components, uint64_t cookie);
+int bus_remove_match_internal(sd_bus *bus, const char *match, uint64_t cookie);
+
+int bus_add_match_internal_kernel(sd_bus *bus, struct bus_match_component *components, unsigned n_components, uint64_t cookie);
+int bus_remove_match_internal_kernel(sd_bus *bus, uint64_t cookie);
+
+int bus_get_name_creds_kdbus(sd_bus *bus, const char *name, uint64_t mask, bool allow_activator, sd_bus_creds **creds);
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-convenience.c b/src/libsystemd/libsystemd-internal/sd-bus/bus-convenience.c
new file mode 100644
index 0000000000..2d06bf541f
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-convenience.c
@@ -0,0 +1,626 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "bus-internal.h"
+#include "bus-message.h"
+#include "bus-signature.h"
+#include "bus-type.h"
+#include "bus-util.h"
+#include "string-util.h"
+
+_public_ int sd_bus_emit_signal(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *member,
+ const char *types, ...) {
+
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+ int r;
+
+ assert_return(bus, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
+ r = sd_bus_message_new_signal(bus, &m, path, interface, member);
+ if (r < 0)
+ return r;
+
+ if (!isempty(types)) {
+ va_list ap;
+
+ va_start(ap, types);
+ r = bus_message_append_ap(m, types, ap);
+ va_end(ap);
+ if (r < 0)
+ return r;
+ }
+
+ return sd_bus_send(bus, m, NULL);
+}
+
+_public_ int sd_bus_call_method_async(
+ sd_bus *bus,
+ sd_bus_slot **slot,
+ const char *destination,
+ const char *path,
+ const char *interface,
+ const char *member,
+ sd_bus_message_handler_t callback,
+ void *userdata,
+ const char *types, ...) {
+
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+ int r;
+
+ assert_return(bus, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
+ r = sd_bus_message_new_method_call(bus, &m, destination, path, interface, member);
+ if (r < 0)
+ return r;
+
+ if (!isempty(types)) {
+ va_list ap;
+
+ va_start(ap, types);
+ r = bus_message_append_ap(m, types, ap);
+ va_end(ap);
+ if (r < 0)
+ return r;
+ }
+
+ return sd_bus_call_async(bus, slot, m, callback, userdata, 0);
+}
+
+_public_ int sd_bus_call_method(
+ sd_bus *bus,
+ const char *destination,
+ const char *path,
+ const char *interface,
+ const char *member,
+ sd_bus_error *error,
+ sd_bus_message **reply,
+ const char *types, ...) {
+
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+ int r;
+
+ bus_assert_return(bus, -EINVAL, error);
+ bus_assert_return(!bus_pid_changed(bus), -ECHILD, error);
+
+ if (!BUS_IS_OPEN(bus->state)) {
+ r = -ENOTCONN;
+ goto fail;
+ }
+
+ r = sd_bus_message_new_method_call(bus, &m, destination, path, interface, member);
+ if (r < 0)
+ goto fail;
+
+ if (!isempty(types)) {
+ va_list ap;
+
+ va_start(ap, types);
+ r = bus_message_append_ap(m, types, ap);
+ va_end(ap);
+ if (r < 0)
+ goto fail;
+ }
+
+ return sd_bus_call(bus, m, 0, error, reply);
+
+fail:
+ return sd_bus_error_set_errno(error, r);
+}
+
+_public_ int sd_bus_reply_method_return(
+ sd_bus_message *call,
+ const char *types, ...) {
+
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+ int r;
+
+ assert_return(call, -EINVAL);
+ assert_return(call->sealed, -EPERM);
+ assert_return(call->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL);
+ assert_return(call->bus, -EINVAL);
+ assert_return(!bus_pid_changed(call->bus), -ECHILD);
+
+ if (!BUS_IS_OPEN(call->bus->state))
+ return -ENOTCONN;
+
+ if (call->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED)
+ return 0;
+
+ r = sd_bus_message_new_method_return(call, &m);
+ if (r < 0)
+ return r;
+
+ if (!isempty(types)) {
+ va_list ap;
+
+ va_start(ap, types);
+ r = bus_message_append_ap(m, types, ap);
+ va_end(ap);
+ if (r < 0)
+ return r;
+ }
+
+ return sd_bus_send(call->bus, m, NULL);
+}
+
+_public_ int sd_bus_reply_method_error(
+ sd_bus_message *call,
+ const sd_bus_error *e) {
+
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+ int r;
+
+ assert_return(call, -EINVAL);
+ assert_return(call->sealed, -EPERM);
+ assert_return(call->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL);
+ assert_return(sd_bus_error_is_set(e), -EINVAL);
+ assert_return(call->bus, -EINVAL);
+ assert_return(!bus_pid_changed(call->bus), -ECHILD);
+
+ if (!BUS_IS_OPEN(call->bus->state))
+ return -ENOTCONN;
+
+ if (call->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED)
+ return 0;
+
+ r = sd_bus_message_new_method_error(call, &m, e);
+ if (r < 0)
+ return r;
+
+ return sd_bus_send(call->bus, m, NULL);
+}
+
+_public_ int sd_bus_reply_method_errorf(
+ sd_bus_message *call,
+ const char *name,
+ const char *format,
+ ...) {
+
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ va_list ap;
+
+ assert_return(call, -EINVAL);
+ assert_return(call->sealed, -EPERM);
+ assert_return(call->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL);
+ assert_return(call->bus, -EINVAL);
+ assert_return(!bus_pid_changed(call->bus), -ECHILD);
+
+ if (!BUS_IS_OPEN(call->bus->state))
+ return -ENOTCONN;
+
+ if (call->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED)
+ return 0;
+
+ va_start(ap, format);
+ bus_error_setfv(&error, name, format, ap);
+ va_end(ap);
+
+ return sd_bus_reply_method_error(call, &error);
+}
+
+_public_ int sd_bus_reply_method_errno(
+ sd_bus_message *call,
+ int error,
+ const sd_bus_error *p) {
+
+ _cleanup_(sd_bus_error_free) sd_bus_error berror = SD_BUS_ERROR_NULL;
+
+ assert_return(call, -EINVAL);
+ assert_return(call->sealed, -EPERM);
+ assert_return(call->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL);
+ assert_return(call->bus, -EINVAL);
+ assert_return(!bus_pid_changed(call->bus), -ECHILD);
+
+ if (!BUS_IS_OPEN(call->bus->state))
+ return -ENOTCONN;
+
+ if (call->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED)
+ return 0;
+
+ if (sd_bus_error_is_set(p))
+ return sd_bus_reply_method_error(call, p);
+
+ sd_bus_error_set_errno(&berror, error);
+
+ return sd_bus_reply_method_error(call, &berror);
+}
+
+_public_ int sd_bus_reply_method_errnof(
+ sd_bus_message *call,
+ int error,
+ const char *format,
+ ...) {
+
+ _cleanup_(sd_bus_error_free) sd_bus_error berror = SD_BUS_ERROR_NULL;
+ va_list ap;
+
+ assert_return(call, -EINVAL);
+ assert_return(call->sealed, -EPERM);
+ assert_return(call->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL);
+ assert_return(call->bus, -EINVAL);
+ assert_return(!bus_pid_changed(call->bus), -ECHILD);
+
+ if (!BUS_IS_OPEN(call->bus->state))
+ return -ENOTCONN;
+
+ if (call->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED)
+ return 0;
+
+ va_start(ap, format);
+ sd_bus_error_set_errnofv(&berror, error, format, ap);
+ va_end(ap);
+
+ return sd_bus_reply_method_error(call, &berror);
+}
+
+_public_ int sd_bus_get_property(
+ sd_bus *bus,
+ const char *destination,
+ const char *path,
+ const char *interface,
+ const char *member,
+ sd_bus_error *error,
+ sd_bus_message **reply,
+ const char *type) {
+
+ sd_bus_message *rep = NULL;
+ int r;
+
+ bus_assert_return(bus, -EINVAL, error);
+ bus_assert_return(isempty(interface) || interface_name_is_valid(interface), -EINVAL, error);
+ bus_assert_return(member_name_is_valid(member), -EINVAL, error);
+ bus_assert_return(reply, -EINVAL, error);
+ bus_assert_return(signature_is_single(type, false), -EINVAL, error);
+ bus_assert_return(!bus_pid_changed(bus), -ECHILD, error);
+
+ if (!BUS_IS_OPEN(bus->state)) {
+ r = -ENOTCONN;
+ goto fail;
+ }
+
+ r = sd_bus_call_method(bus, destination, path, "org.freedesktop.DBus.Properties", "Get", error, &rep, "ss", strempty(interface), member);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_enter_container(rep, 'v', type);
+ if (r < 0) {
+ sd_bus_message_unref(rep);
+ goto fail;
+ }
+
+ *reply = rep;
+ return 0;
+
+fail:
+ return sd_bus_error_set_errno(error, r);
+}
+
+_public_ int sd_bus_get_property_trivial(
+ sd_bus *bus,
+ const char *destination,
+ const char *path,
+ const char *interface,
+ const char *member,
+ sd_bus_error *error,
+ char type, void *ptr) {
+
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ int r;
+
+ bus_assert_return(bus, -EINVAL, error);
+ bus_assert_return(isempty(interface) || interface_name_is_valid(interface), -EINVAL, error);
+ bus_assert_return(member_name_is_valid(member), -EINVAL, error);
+ bus_assert_return(bus_type_is_trivial(type), -EINVAL, error);
+ bus_assert_return(ptr, -EINVAL, error);
+ bus_assert_return(!bus_pid_changed(bus), -ECHILD, error);
+
+ if (!BUS_IS_OPEN(bus->state)) {
+ r = -ENOTCONN;
+ goto fail;
+ }
+
+ r = sd_bus_call_method(bus, destination, path, "org.freedesktop.DBus.Properties", "Get", error, &reply, "ss", strempty(interface), member);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_enter_container(reply, 'v', CHAR_TO_STR(type));
+ if (r < 0)
+ goto fail;
+
+ r = sd_bus_message_read_basic(reply, type, ptr);
+ if (r < 0)
+ goto fail;
+
+ return 0;
+
+fail:
+ return sd_bus_error_set_errno(error, r);
+}
+
+_public_ int sd_bus_get_property_string(
+ sd_bus *bus,
+ const char *destination,
+ const char *path,
+ const char *interface,
+ const char *member,
+ sd_bus_error *error,
+ char **ret) {
+
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ const char *s;
+ char *n;
+ int r;
+
+ bus_assert_return(bus, -EINVAL, error);
+ bus_assert_return(isempty(interface) || interface_name_is_valid(interface), -EINVAL, error);
+ bus_assert_return(member_name_is_valid(member), -EINVAL, error);
+ bus_assert_return(ret, -EINVAL, error);
+ bus_assert_return(!bus_pid_changed(bus), -ECHILD, error);
+
+ if (!BUS_IS_OPEN(bus->state)) {
+ r = -ENOTCONN;
+ goto fail;
+ }
+
+ r = sd_bus_call_method(bus, destination, path, "org.freedesktop.DBus.Properties", "Get", error, &reply, "ss", strempty(interface), member);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_enter_container(reply, 'v', "s");
+ if (r < 0)
+ goto fail;
+
+ r = sd_bus_message_read_basic(reply, 's', &s);
+ if (r < 0)
+ goto fail;
+
+ n = strdup(s);
+ if (!n) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ *ret = n;
+ return 0;
+
+fail:
+ return sd_bus_error_set_errno(error, r);
+}
+
+_public_ int sd_bus_get_property_strv(
+ sd_bus *bus,
+ const char *destination,
+ const char *path,
+ const char *interface,
+ const char *member,
+ sd_bus_error *error,
+ char ***ret) {
+
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ int r;
+
+ bus_assert_return(bus, -EINVAL, error);
+ bus_assert_return(isempty(interface) || interface_name_is_valid(interface), -EINVAL, error);
+ bus_assert_return(member_name_is_valid(member), -EINVAL, error);
+ bus_assert_return(ret, -EINVAL, error);
+ bus_assert_return(!bus_pid_changed(bus), -ECHILD, error);
+
+ if (!BUS_IS_OPEN(bus->state)) {
+ r = -ENOTCONN;
+ goto fail;
+ }
+
+ r = sd_bus_call_method(bus, destination, path, "org.freedesktop.DBus.Properties", "Get", error, &reply, "ss", strempty(interface), member);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_enter_container(reply, 'v', NULL);
+ if (r < 0)
+ goto fail;
+
+ r = sd_bus_message_read_strv(reply, ret);
+ if (r < 0)
+ goto fail;
+
+ return 0;
+
+fail:
+ return sd_bus_error_set_errno(error, r);
+}
+
+_public_ int sd_bus_set_property(
+ sd_bus *bus,
+ const char *destination,
+ const char *path,
+ const char *interface,
+ const char *member,
+ sd_bus_error *error,
+ const char *type, ...) {
+
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+ va_list ap;
+ int r;
+
+ bus_assert_return(bus, -EINVAL, error);
+ bus_assert_return(isempty(interface) || interface_name_is_valid(interface), -EINVAL, error);
+ bus_assert_return(member_name_is_valid(member), -EINVAL, error);
+ bus_assert_return(signature_is_single(type, false), -EINVAL, error);
+ bus_assert_return(!bus_pid_changed(bus), -ECHILD, error);
+
+ if (!BUS_IS_OPEN(bus->state)) {
+ r = -ENOTCONN;
+ goto fail;
+ }
+
+ r = sd_bus_message_new_method_call(bus, &m, destination, path, "org.freedesktop.DBus.Properties", "Set");
+ if (r < 0)
+ goto fail;
+
+ r = sd_bus_message_append(m, "ss", strempty(interface), member);
+ if (r < 0)
+ goto fail;
+
+ r = sd_bus_message_open_container(m, 'v', type);
+ if (r < 0)
+ goto fail;
+
+ va_start(ap, type);
+ r = bus_message_append_ap(m, type, ap);
+ va_end(ap);
+ if (r < 0)
+ goto fail;
+
+ r = sd_bus_message_close_container(m);
+ if (r < 0)
+ goto fail;
+
+ return sd_bus_call(bus, m, 0, error, NULL);
+
+fail:
+ return sd_bus_error_set_errno(error, r);
+}
+
+_public_ int sd_bus_query_sender_creds(sd_bus_message *call, uint64_t mask, sd_bus_creds **creds) {
+ sd_bus_creds *c;
+
+ assert_return(call, -EINVAL);
+ assert_return(call->sealed, -EPERM);
+ assert_return(call->bus, -EINVAL);
+ assert_return(!bus_pid_changed(call->bus), -ECHILD);
+
+ if (!BUS_IS_OPEN(call->bus->state))
+ return -ENOTCONN;
+
+ c = sd_bus_message_get_creds(call);
+
+ /* All data we need? */
+ if (c && (mask & ~c->mask) == 0) {
+ *creds = sd_bus_creds_ref(c);
+ return 0;
+ }
+
+ /* No data passed? Or not enough data passed to retrieve the missing bits? */
+ if (!c || !(c->mask & SD_BUS_CREDS_PID)) {
+ /* We couldn't read anything from the call, let's try
+ * to get it from the sender or peer. */
+
+ if (call->sender)
+ /* There's a sender, but the creds are
+ * missing. This means we are talking via
+ * dbus1, or are getting a message that was
+ * sent to us via kdbus, but was converted
+ * from a dbus1 message by the bus-proxy and
+ * thus also lacks the creds. */
+ return sd_bus_get_name_creds(call->bus, call->sender, mask, creds);
+ else
+ /* There's no sender, hence we are on a dbus1
+ * direct connection. For direct connections
+ * the credentials of the AF_UNIX peer matter,
+ * which may be queried via
+ * sd_bus_get_owner_creds(). */
+ return sd_bus_get_owner_creds(call->bus, mask, creds);
+ }
+
+ return bus_creds_extend_by_pid(c, mask, creds);
+}
+
+_public_ int sd_bus_query_sender_privilege(sd_bus_message *call, int capability) {
+ _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
+ uid_t our_uid;
+ bool know_caps = false;
+ int r;
+
+ assert_return(call, -EINVAL);
+ assert_return(call->sealed, -EPERM);
+ assert_return(call->bus, -EINVAL);
+ assert_return(!bus_pid_changed(call->bus), -ECHILD);
+
+ if (!BUS_IS_OPEN(call->bus->state))
+ return -ENOTCONN;
+
+ if (capability >= 0) {
+
+ r = sd_bus_query_sender_creds(call, SD_BUS_CREDS_UID|SD_BUS_CREDS_EUID|SD_BUS_CREDS_EFFECTIVE_CAPS, &creds);
+ if (r < 0)
+ return r;
+
+ /* We cannot use augmented caps for authorization,
+ * since then data is acquired raceful from
+ * /proc. This can never actually happen, but let's
+ * better be safe than sorry, and do an extra check
+ * here. */
+ assert_return((sd_bus_creds_get_augmented_mask(creds) & SD_BUS_CREDS_EFFECTIVE_CAPS) == 0, -EPERM);
+
+ /* Note that not even on kdbus we might have the caps
+ * field, due to faked identities, or namespace
+ * translation issues. */
+ r = sd_bus_creds_has_effective_cap(creds, capability);
+ if (r > 0)
+ return 1;
+ if (r == 0)
+ know_caps = true;
+ } else {
+ r = sd_bus_query_sender_creds(call, SD_BUS_CREDS_UID|SD_BUS_CREDS_EUID, &creds);
+ if (r < 0)
+ return r;
+ }
+
+ /* Now, check the UID, but only if the capability check wasn't
+ * sufficient */
+ our_uid = getuid();
+ if (our_uid != 0 || !know_caps || capability < 0) {
+ uid_t sender_uid;
+
+ /* We cannot use augmented uid/euid for authorization,
+ * since then data is acquired raceful from
+ * /proc. This can never actually happen, but let's
+ * better be safe than sorry, and do an extra check
+ * here. */
+ assert_return((sd_bus_creds_get_augmented_mask(creds) & (SD_BUS_CREDS_UID|SD_BUS_CREDS_EUID)) == 0, -EPERM);
+
+ /* Try to use the EUID, if we have it. */
+ r = sd_bus_creds_get_euid(creds, &sender_uid);
+ if (r < 0)
+ r = sd_bus_creds_get_uid(creds, &sender_uid);
+
+ if (r >= 0) {
+ /* Sender has same UID as us, then let's grant access */
+ if (sender_uid == our_uid)
+ return 1;
+
+ /* Sender is root, we are not root. */
+ if (our_uid != 0 && sender_uid == 0)
+ return 1;
+ }
+ }
+
+ return 0;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-creds.c b/src/libsystemd/libsystemd-internal/sd-bus/bus-creds.c
new file mode 100644
index 0000000000..c4f693dee9
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-creds.c
@@ -0,0 +1,1349 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <linux/capability.h>
+#include <stdlib.h>
+
+#include "alloc-util.h"
+#include "audit-util.h"
+#include "bus-creds.h"
+#include "bus-label.h"
+#include "bus-message.h"
+#include "bus-util.h"
+#include "capability-util.h"
+#include "cgroup-util.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "formats-util.h"
+#include "hexdecoct.h"
+#include "parse-util.h"
+#include "process-util.h"
+#include "string-util.h"
+#include "strv.h"
+#include "terminal-util.h"
+#include "user-util.h"
+#include "util.h"
+
+enum {
+ CAP_OFFSET_INHERITABLE = 0,
+ CAP_OFFSET_PERMITTED = 1,
+ CAP_OFFSET_EFFECTIVE = 2,
+ CAP_OFFSET_BOUNDING = 3
+};
+
+void bus_creds_done(sd_bus_creds *c) {
+ assert(c);
+
+ /* For internal bus cred structures that are allocated by
+ * something else */
+
+ free(c->session);
+ free(c->unit);
+ free(c->user_unit);
+ free(c->slice);
+ free(c->user_slice);
+ free(c->unescaped_description);
+ free(c->supplementary_gids);
+ free(c->tty);
+
+ free(c->well_known_names); /* note that this is an strv, but
+ * we only free the array, not the
+ * strings the array points to. The
+ * full strv we only free if
+ * c->allocated is set, see
+ * below. */
+
+ strv_free(c->cmdline_array);
+}
+
+_public_ sd_bus_creds *sd_bus_creds_ref(sd_bus_creds *c) {
+
+ if (!c)
+ return NULL;
+
+ if (c->allocated) {
+ assert(c->n_ref > 0);
+ c->n_ref++;
+ } else {
+ sd_bus_message *m;
+
+ /* If this is an embedded creds structure, then
+ * forward ref counting to the message */
+ m = container_of(c, sd_bus_message, creds);
+ sd_bus_message_ref(m);
+ }
+
+ return c;
+}
+
+_public_ sd_bus_creds *sd_bus_creds_unref(sd_bus_creds *c) {
+
+ if (!c)
+ return NULL;
+
+ if (c->allocated) {
+ assert(c->n_ref > 0);
+ c->n_ref--;
+
+ if (c->n_ref == 0) {
+ free(c->comm);
+ free(c->tid_comm);
+ free(c->exe);
+ free(c->cmdline);
+ free(c->cgroup);
+ free(c->capability);
+ free(c->label);
+ free(c->unique_name);
+ free(c->cgroup_root);
+ free(c->description);
+
+ c->supplementary_gids = mfree(c->supplementary_gids);
+
+ c->well_known_names = strv_free(c->well_known_names);
+
+ bus_creds_done(c);
+
+ free(c);
+ }
+ } else {
+ sd_bus_message *m;
+
+ m = container_of(c, sd_bus_message, creds);
+ sd_bus_message_unref(m);
+ }
+
+
+ return NULL;
+}
+
+_public_ uint64_t sd_bus_creds_get_mask(const sd_bus_creds *c) {
+ assert_return(c, 0);
+
+ return c->mask;
+}
+
+_public_ uint64_t sd_bus_creds_get_augmented_mask(const sd_bus_creds *c) {
+ assert_return(c, 0);
+
+ return c->augmented;
+}
+
+sd_bus_creds* bus_creds_new(void) {
+ sd_bus_creds *c;
+
+ c = new0(sd_bus_creds, 1);
+ if (!c)
+ return NULL;
+
+ c->allocated = true;
+ c->n_ref = 1;
+ return c;
+}
+
+_public_ int sd_bus_creds_new_from_pid(sd_bus_creds **ret, pid_t pid, uint64_t mask) {
+ sd_bus_creds *c;
+ int r;
+
+ assert_return(pid >= 0, -EINVAL);
+ assert_return(mask <= _SD_BUS_CREDS_ALL, -EOPNOTSUPP);
+ assert_return(ret, -EINVAL);
+
+ if (pid == 0)
+ pid = getpid();
+
+ c = bus_creds_new();
+ if (!c)
+ return -ENOMEM;
+
+ r = bus_creds_add_more(c, mask | SD_BUS_CREDS_AUGMENT, pid, 0);
+ if (r < 0) {
+ sd_bus_creds_unref(c);
+ return r;
+ }
+
+ /* Check if the process existed at all, in case we haven't
+ * figured that out already */
+ if (!pid_is_alive(pid)) {
+ sd_bus_creds_unref(c);
+ return -ESRCH;
+ }
+
+ *ret = c;
+ return 0;
+}
+
+_public_ int sd_bus_creds_get_uid(sd_bus_creds *c, uid_t *uid) {
+ assert_return(c, -EINVAL);
+ assert_return(uid, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_UID))
+ return -ENODATA;
+
+ *uid = c->uid;
+ return 0;
+}
+
+_public_ int sd_bus_creds_get_euid(sd_bus_creds *c, uid_t *euid) {
+ assert_return(c, -EINVAL);
+ assert_return(euid, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_EUID))
+ return -ENODATA;
+
+ *euid = c->euid;
+ return 0;
+}
+
+_public_ int sd_bus_creds_get_suid(sd_bus_creds *c, uid_t *suid) {
+ assert_return(c, -EINVAL);
+ assert_return(suid, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_SUID))
+ return -ENODATA;
+
+ *suid = c->suid;
+ return 0;
+}
+
+
+_public_ int sd_bus_creds_get_fsuid(sd_bus_creds *c, uid_t *fsuid) {
+ assert_return(c, -EINVAL);
+ assert_return(fsuid, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_FSUID))
+ return -ENODATA;
+
+ *fsuid = c->fsuid;
+ return 0;
+}
+
+_public_ int sd_bus_creds_get_gid(sd_bus_creds *c, gid_t *gid) {
+ assert_return(c, -EINVAL);
+ assert_return(gid, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_GID))
+ return -ENODATA;
+
+ *gid = c->gid;
+ return 0;
+}
+
+_public_ int sd_bus_creds_get_egid(sd_bus_creds *c, gid_t *egid) {
+ assert_return(c, -EINVAL);
+ assert_return(egid, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_EGID))
+ return -ENODATA;
+
+ *egid = c->egid;
+ return 0;
+}
+
+_public_ int sd_bus_creds_get_sgid(sd_bus_creds *c, gid_t *sgid) {
+ assert_return(c, -EINVAL);
+ assert_return(sgid, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_SGID))
+ return -ENODATA;
+
+ *sgid = c->sgid;
+ return 0;
+}
+
+_public_ int sd_bus_creds_get_fsgid(sd_bus_creds *c, gid_t *fsgid) {
+ assert_return(c, -EINVAL);
+ assert_return(fsgid, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_FSGID))
+ return -ENODATA;
+
+ *fsgid = c->fsgid;
+ return 0;
+}
+
+_public_ int sd_bus_creds_get_supplementary_gids(sd_bus_creds *c, const gid_t **gids) {
+ assert_return(c, -EINVAL);
+ assert_return(gids, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_SUPPLEMENTARY_GIDS))
+ return -ENODATA;
+
+ *gids = c->supplementary_gids;
+ return (int) c->n_supplementary_gids;
+}
+
+_public_ int sd_bus_creds_get_pid(sd_bus_creds *c, pid_t *pid) {
+ assert_return(c, -EINVAL);
+ assert_return(pid, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_PID))
+ return -ENODATA;
+
+ assert(c->pid > 0);
+ *pid = c->pid;
+ return 0;
+}
+
+_public_ int sd_bus_creds_get_ppid(sd_bus_creds *c, pid_t *ppid) {
+ assert_return(c, -EINVAL);
+ assert_return(ppid, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_PPID))
+ return -ENODATA;
+
+ /* PID 1 has no parent process. Let's distinguish the case of
+ * not knowing and not having a parent process by the returned
+ * error code. */
+ if (c->ppid == 0)
+ return -ENXIO;
+
+ *ppid = c->ppid;
+ return 0;
+}
+
+_public_ int sd_bus_creds_get_tid(sd_bus_creds *c, pid_t *tid) {
+ assert_return(c, -EINVAL);
+ assert_return(tid, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_TID))
+ return -ENODATA;
+
+ assert(c->tid > 0);
+ *tid = c->tid;
+ return 0;
+}
+
+_public_ int sd_bus_creds_get_selinux_context(sd_bus_creds *c, const char **ret) {
+ assert_return(c, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_SELINUX_CONTEXT))
+ return -ENODATA;
+
+ assert(c->label);
+ *ret = c->label;
+ return 0;
+}
+
+_public_ int sd_bus_creds_get_comm(sd_bus_creds *c, const char **ret) {
+ assert_return(c, -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_COMM))
+ return -ENODATA;
+
+ assert(c->comm);
+ *ret = c->comm;
+ return 0;
+}
+
+_public_ int sd_bus_creds_get_tid_comm(sd_bus_creds *c, const char **ret) {
+ assert_return(c, -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_TID_COMM))
+ return -ENODATA;
+
+ assert(c->tid_comm);
+ *ret = c->tid_comm;
+ return 0;
+}
+
+_public_ int sd_bus_creds_get_exe(sd_bus_creds *c, const char **ret) {
+ assert_return(c, -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_EXE))
+ return -ENODATA;
+
+ if (!c->exe)
+ return -ENXIO;
+
+ *ret = c->exe;
+ return 0;
+}
+
+_public_ int sd_bus_creds_get_cgroup(sd_bus_creds *c, const char **ret) {
+ assert_return(c, -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_CGROUP))
+ return -ENODATA;
+
+ assert(c->cgroup);
+ *ret = c->cgroup;
+ return 0;
+}
+
+_public_ int sd_bus_creds_get_unit(sd_bus_creds *c, const char **ret) {
+ int r;
+
+ assert_return(c, -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_UNIT))
+ return -ENODATA;
+
+ assert(c->cgroup);
+
+ if (!c->unit) {
+ const char *shifted;
+
+ r = cg_shift_path(c->cgroup, c->cgroup_root, &shifted);
+ if (r < 0)
+ return r;
+
+ r = cg_path_get_unit(shifted, (char**) &c->unit);
+ if (r < 0)
+ return r;
+ }
+
+ *ret = c->unit;
+ return 0;
+}
+
+_public_ int sd_bus_creds_get_user_unit(sd_bus_creds *c, const char **ret) {
+ int r;
+
+ assert_return(c, -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_USER_UNIT))
+ return -ENODATA;
+
+ assert(c->cgroup);
+
+ if (!c->user_unit) {
+ const char *shifted;
+
+ r = cg_shift_path(c->cgroup, c->cgroup_root, &shifted);
+ if (r < 0)
+ return r;
+
+ r = cg_path_get_user_unit(shifted, (char**) &c->user_unit);
+ if (r < 0)
+ return r;
+ }
+
+ *ret = c->user_unit;
+ return 0;
+}
+
+_public_ int sd_bus_creds_get_slice(sd_bus_creds *c, const char **ret) {
+ int r;
+
+ assert_return(c, -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_SLICE))
+ return -ENODATA;
+
+ assert(c->cgroup);
+
+ if (!c->slice) {
+ const char *shifted;
+
+ r = cg_shift_path(c->cgroup, c->cgroup_root, &shifted);
+ if (r < 0)
+ return r;
+
+ r = cg_path_get_slice(shifted, (char**) &c->slice);
+ if (r < 0)
+ return r;
+ }
+
+ *ret = c->slice;
+ return 0;
+}
+
+_public_ int sd_bus_creds_get_user_slice(sd_bus_creds *c, const char **ret) {
+ int r;
+
+ assert_return(c, -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_USER_SLICE))
+ return -ENODATA;
+
+ assert(c->cgroup);
+
+ if (!c->user_slice) {
+ const char *shifted;
+
+ r = cg_shift_path(c->cgroup, c->cgroup_root, &shifted);
+ if (r < 0)
+ return r;
+
+ r = cg_path_get_user_slice(shifted, (char**) &c->user_slice);
+ if (r < 0)
+ return r;
+ }
+
+ *ret = c->user_slice;
+ return 0;
+}
+
+_public_ int sd_bus_creds_get_session(sd_bus_creds *c, const char **ret) {
+ int r;
+
+ assert_return(c, -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_SESSION))
+ return -ENODATA;
+
+ assert(c->cgroup);
+
+ if (!c->session) {
+ const char *shifted;
+
+ r = cg_shift_path(c->cgroup, c->cgroup_root, &shifted);
+ if (r < 0)
+ return r;
+
+ r = cg_path_get_session(shifted, (char**) &c->session);
+ if (r < 0)
+ return r;
+ }
+
+ *ret = c->session;
+ return 0;
+}
+
+_public_ int sd_bus_creds_get_owner_uid(sd_bus_creds *c, uid_t *uid) {
+ const char *shifted;
+ int r;
+
+ assert_return(c, -EINVAL);
+ assert_return(uid, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_OWNER_UID))
+ return -ENODATA;
+
+ assert(c->cgroup);
+
+ r = cg_shift_path(c->cgroup, c->cgroup_root, &shifted);
+ if (r < 0)
+ return r;
+
+ return cg_path_get_owner_uid(shifted, uid);
+}
+
+_public_ int sd_bus_creds_get_cmdline(sd_bus_creds *c, char ***cmdline) {
+ assert_return(c, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_CMDLINE))
+ return -ENODATA;
+
+ if (!c->cmdline)
+ return -ENXIO;
+
+ if (!c->cmdline_array) {
+ c->cmdline_array = strv_parse_nulstr(c->cmdline, c->cmdline_size);
+ if (!c->cmdline_array)
+ return -ENOMEM;
+ }
+
+ *cmdline = c->cmdline_array;
+ return 0;
+}
+
+_public_ int sd_bus_creds_get_audit_session_id(sd_bus_creds *c, uint32_t *sessionid) {
+ assert_return(c, -EINVAL);
+ assert_return(sessionid, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_AUDIT_SESSION_ID))
+ return -ENODATA;
+
+ if (c->audit_session_id == AUDIT_SESSION_INVALID)
+ return -ENXIO;
+
+ *sessionid = c->audit_session_id;
+ return 0;
+}
+
+_public_ int sd_bus_creds_get_audit_login_uid(sd_bus_creds *c, uid_t *uid) {
+ assert_return(c, -EINVAL);
+ assert_return(uid, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_AUDIT_LOGIN_UID))
+ return -ENODATA;
+
+ if (c->audit_login_uid == UID_INVALID)
+ return -ENXIO;
+
+ *uid = c->audit_login_uid;
+ return 0;
+}
+
+_public_ int sd_bus_creds_get_tty(sd_bus_creds *c, const char **ret) {
+ assert_return(c, -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_TTY))
+ return -ENODATA;
+
+ if (!c->tty)
+ return -ENXIO;
+
+ *ret = c->tty;
+ return 0;
+}
+
+_public_ int sd_bus_creds_get_unique_name(sd_bus_creds *c, const char **unique_name) {
+ assert_return(c, -EINVAL);
+ assert_return(unique_name, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_UNIQUE_NAME))
+ return -ENODATA;
+
+ *unique_name = c->unique_name;
+ return 0;
+}
+
+_public_ int sd_bus_creds_get_well_known_names(sd_bus_creds *c, char ***well_known_names) {
+ assert_return(c, -EINVAL);
+ assert_return(well_known_names, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_WELL_KNOWN_NAMES))
+ return -ENODATA;
+
+ /* As a special hack we return the bus driver as well-known
+ * names list when this is requested. */
+ if (c->well_known_names_driver) {
+ static const char* const wkn[] = {
+ "org.freedesktop.DBus",
+ NULL
+ };
+
+ *well_known_names = (char**) wkn;
+ return 0;
+ }
+
+ if (c->well_known_names_local) {
+ static const char* const wkn[] = {
+ "org.freedesktop.DBus.Local",
+ NULL
+ };
+
+ *well_known_names = (char**) wkn;
+ return 0;
+ }
+
+ *well_known_names = c->well_known_names;
+ return 0;
+}
+
+_public_ int sd_bus_creds_get_description(sd_bus_creds *c, const char **ret) {
+ assert_return(c, -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_DESCRIPTION))
+ return -ENODATA;
+
+ assert(c->description);
+
+ if (!c->unescaped_description) {
+ c->unescaped_description = bus_label_unescape(c->description);
+ if (!c->unescaped_description)
+ return -ENOMEM;
+ }
+
+ *ret = c->unescaped_description;
+ return 0;
+}
+
+static int has_cap(sd_bus_creds *c, unsigned offset, int capability) {
+ size_t sz;
+
+ assert(c);
+ assert(capability >= 0);
+ assert(c->capability);
+
+ if ((unsigned) capability > cap_last_cap())
+ return 0;
+
+ sz = DIV_ROUND_UP(cap_last_cap(), 32U);
+
+ return !!(c->capability[offset * sz + CAP_TO_INDEX(capability)] & CAP_TO_MASK(capability));
+}
+
+_public_ int sd_bus_creds_has_effective_cap(sd_bus_creds *c, int capability) {
+ assert_return(c, -EINVAL);
+ assert_return(capability >= 0, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_EFFECTIVE_CAPS))
+ return -ENODATA;
+
+ return has_cap(c, CAP_OFFSET_EFFECTIVE, capability);
+}
+
+_public_ int sd_bus_creds_has_permitted_cap(sd_bus_creds *c, int capability) {
+ assert_return(c, -EINVAL);
+ assert_return(capability >= 0, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_PERMITTED_CAPS))
+ return -ENODATA;
+
+ return has_cap(c, CAP_OFFSET_PERMITTED, capability);
+}
+
+_public_ int sd_bus_creds_has_inheritable_cap(sd_bus_creds *c, int capability) {
+ assert_return(c, -EINVAL);
+ assert_return(capability >= 0, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_INHERITABLE_CAPS))
+ return -ENODATA;
+
+ return has_cap(c, CAP_OFFSET_INHERITABLE, capability);
+}
+
+_public_ int sd_bus_creds_has_bounding_cap(sd_bus_creds *c, int capability) {
+ assert_return(c, -EINVAL);
+ assert_return(capability >= 0, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_BOUNDING_CAPS))
+ return -ENODATA;
+
+ return has_cap(c, CAP_OFFSET_BOUNDING, capability);
+}
+
+static int parse_caps(sd_bus_creds *c, unsigned offset, const char *p) {
+ size_t sz, max;
+ unsigned i, j;
+
+ assert(c);
+ assert(p);
+
+ max = DIV_ROUND_UP(cap_last_cap(), 32U);
+ p += strspn(p, WHITESPACE);
+
+ sz = strlen(p);
+ if (sz % 8 != 0)
+ return -EINVAL;
+
+ sz /= 8;
+ if (sz > max)
+ return -EINVAL;
+
+ if (!c->capability) {
+ c->capability = new0(uint32_t, max * 4);
+ if (!c->capability)
+ return -ENOMEM;
+ }
+
+ for (i = 0; i < sz; i ++) {
+ uint32_t v = 0;
+
+ for (j = 0; j < 8; ++j) {
+ int t;
+
+ t = unhexchar(*p++);
+ if (t < 0)
+ return -EINVAL;
+
+ v = (v << 4) | t;
+ }
+
+ c->capability[offset * max + (sz - i - 1)] = v;
+ }
+
+ return 0;
+}
+
+int bus_creds_add_more(sd_bus_creds *c, uint64_t mask, pid_t pid, pid_t tid) {
+ uint64_t missing;
+ int r;
+
+ assert(c);
+ assert(c->allocated);
+
+ if (!(mask & SD_BUS_CREDS_AUGMENT))
+ return 0;
+
+ /* Try to retrieve PID from creds if it wasn't passed to us */
+ if (pid > 0) {
+ c->pid = pid;
+ c->mask |= SD_BUS_CREDS_PID;
+ } else if (c->mask & SD_BUS_CREDS_PID)
+ pid = c->pid;
+ else
+ /* Without pid we cannot do much... */
+ return 0;
+
+ /* Try to retrieve TID from creds if it wasn't passed to us */
+ if (tid <= 0 && (c->mask & SD_BUS_CREDS_TID))
+ tid = c->tid;
+
+ /* Calculate what we shall and can add */
+ missing = mask & ~(c->mask|SD_BUS_CREDS_PID|SD_BUS_CREDS_TID|SD_BUS_CREDS_UNIQUE_NAME|SD_BUS_CREDS_WELL_KNOWN_NAMES|SD_BUS_CREDS_DESCRIPTION|SD_BUS_CREDS_AUGMENT);
+ if (missing == 0)
+ return 0;
+
+ if (tid > 0) {
+ c->tid = tid;
+ c->mask |= SD_BUS_CREDS_TID;
+ }
+
+ if (missing & (SD_BUS_CREDS_PPID |
+ SD_BUS_CREDS_UID | SD_BUS_CREDS_EUID | SD_BUS_CREDS_SUID | SD_BUS_CREDS_FSUID |
+ SD_BUS_CREDS_GID | SD_BUS_CREDS_EGID | SD_BUS_CREDS_SGID | SD_BUS_CREDS_FSGID |
+ SD_BUS_CREDS_SUPPLEMENTARY_GIDS |
+ SD_BUS_CREDS_EFFECTIVE_CAPS | SD_BUS_CREDS_INHERITABLE_CAPS |
+ SD_BUS_CREDS_PERMITTED_CAPS | SD_BUS_CREDS_BOUNDING_CAPS)) {
+
+ _cleanup_fclose_ FILE *f = NULL;
+ const char *p;
+
+ p = procfs_file_alloca(pid, "status");
+
+ f = fopen(p, "re");
+ if (!f) {
+ if (errno == ENOENT)
+ return -ESRCH;
+ else if (errno != EPERM && errno != EACCES)
+ return -errno;
+ } else {
+ char line[LINE_MAX];
+
+ FOREACH_LINE(line, f, return -errno) {
+ truncate_nl(line);
+
+ if (missing & SD_BUS_CREDS_PPID) {
+ p = startswith(line, "PPid:");
+ if (p) {
+ p += strspn(p, WHITESPACE);
+
+ /* Explicitly check for PPID 0 (which is the case for PID 1) */
+ if (!streq(p, "0")) {
+ r = parse_pid(p, &c->ppid);
+ if (r < 0)
+ return r;
+
+ } else
+ c->ppid = 0;
+
+ c->mask |= SD_BUS_CREDS_PPID;
+ continue;
+ }
+ }
+
+ if (missing & (SD_BUS_CREDS_UID|SD_BUS_CREDS_EUID|SD_BUS_CREDS_SUID|SD_BUS_CREDS_FSUID)) {
+ p = startswith(line, "Uid:");
+ if (p) {
+ unsigned long uid, euid, suid, fsuid;
+
+ p += strspn(p, WHITESPACE);
+ if (sscanf(p, "%lu %lu %lu %lu", &uid, &euid, &suid, &fsuid) != 4)
+ return -EIO;
+
+ if (missing & SD_BUS_CREDS_UID)
+ c->uid = (uid_t) uid;
+ if (missing & SD_BUS_CREDS_EUID)
+ c->euid = (uid_t) euid;
+ if (missing & SD_BUS_CREDS_SUID)
+ c->suid = (uid_t) suid;
+ if (missing & SD_BUS_CREDS_FSUID)
+ c->fsuid = (uid_t) fsuid;
+
+ c->mask |= missing & (SD_BUS_CREDS_UID|SD_BUS_CREDS_EUID|SD_BUS_CREDS_SUID|SD_BUS_CREDS_FSUID);
+ continue;
+ }
+ }
+
+ if (missing & (SD_BUS_CREDS_GID|SD_BUS_CREDS_EGID|SD_BUS_CREDS_SGID|SD_BUS_CREDS_FSGID)) {
+ p = startswith(line, "Gid:");
+ if (p) {
+ unsigned long gid, egid, sgid, fsgid;
+
+ p += strspn(p, WHITESPACE);
+ if (sscanf(p, "%lu %lu %lu %lu", &gid, &egid, &sgid, &fsgid) != 4)
+ return -EIO;
+
+ if (missing & SD_BUS_CREDS_GID)
+ c->gid = (gid_t) gid;
+ if (missing & SD_BUS_CREDS_EGID)
+ c->egid = (gid_t) egid;
+ if (missing & SD_BUS_CREDS_SGID)
+ c->sgid = (gid_t) sgid;
+ if (missing & SD_BUS_CREDS_FSGID)
+ c->fsgid = (gid_t) fsgid;
+
+ c->mask |= missing & (SD_BUS_CREDS_GID|SD_BUS_CREDS_EGID|SD_BUS_CREDS_SGID|SD_BUS_CREDS_FSGID);
+ continue;
+ }
+ }
+
+ if (missing & SD_BUS_CREDS_SUPPLEMENTARY_GIDS) {
+ p = startswith(line, "Groups:");
+ if (p) {
+ size_t allocated = 0;
+
+ for (;;) {
+ unsigned long g;
+ int n = 0;
+
+ p += strspn(p, WHITESPACE);
+ if (*p == 0)
+ break;
+
+ if (sscanf(p, "%lu%n", &g, &n) != 1)
+ return -EIO;
+
+ if (!GREEDY_REALLOC(c->supplementary_gids, allocated, c->n_supplementary_gids+1))
+ return -ENOMEM;
+
+ c->supplementary_gids[c->n_supplementary_gids++] = (gid_t) g;
+ p += n;
+ }
+
+ c->mask |= SD_BUS_CREDS_SUPPLEMENTARY_GIDS;
+ continue;
+ }
+ }
+
+ if (missing & SD_BUS_CREDS_EFFECTIVE_CAPS) {
+ p = startswith(line, "CapEff:");
+ if (p) {
+ r = parse_caps(c, CAP_OFFSET_EFFECTIVE, p);
+ if (r < 0)
+ return r;
+
+ c->mask |= SD_BUS_CREDS_EFFECTIVE_CAPS;
+ continue;
+ }
+ }
+
+ if (missing & SD_BUS_CREDS_PERMITTED_CAPS) {
+ p = startswith(line, "CapPrm:");
+ if (p) {
+ r = parse_caps(c, CAP_OFFSET_PERMITTED, p);
+ if (r < 0)
+ return r;
+
+ c->mask |= SD_BUS_CREDS_PERMITTED_CAPS;
+ continue;
+ }
+ }
+
+ if (missing & SD_BUS_CREDS_INHERITABLE_CAPS) {
+ p = startswith(line, "CapInh:");
+ if (p) {
+ r = parse_caps(c, CAP_OFFSET_INHERITABLE, p);
+ if (r < 0)
+ return r;
+
+ c->mask |= SD_BUS_CREDS_INHERITABLE_CAPS;
+ continue;
+ }
+ }
+
+ if (missing & SD_BUS_CREDS_BOUNDING_CAPS) {
+ p = startswith(line, "CapBnd:");
+ if (p) {
+ r = parse_caps(c, CAP_OFFSET_BOUNDING, p);
+ if (r < 0)
+ return r;
+
+ c->mask |= SD_BUS_CREDS_BOUNDING_CAPS;
+ continue;
+ }
+ }
+ }
+ }
+ }
+
+ if (missing & SD_BUS_CREDS_SELINUX_CONTEXT) {
+ const char *p;
+
+ p = procfs_file_alloca(pid, "attr/current");
+ r = read_one_line_file(p, &c->label);
+ if (r < 0) {
+ if (r != -ENOENT && r != -EINVAL && r != -EPERM && r != -EACCES)
+ return r;
+ } else
+ c->mask |= SD_BUS_CREDS_SELINUX_CONTEXT;
+ }
+
+ if (missing & SD_BUS_CREDS_COMM) {
+ r = get_process_comm(pid, &c->comm);
+ if (r < 0) {
+ if (r != -EPERM && r != -EACCES)
+ return r;
+ } else
+ c->mask |= SD_BUS_CREDS_COMM;
+ }
+
+ if (missing & SD_BUS_CREDS_EXE) {
+ r = get_process_exe(pid, &c->exe);
+ if (r == -ESRCH) {
+ /* Unfortunately we cannot really distinguish
+ * the case here where the process does not
+ * exist, and /proc/$PID/exe being unreadable
+ * because $PID is a kernel thread. Hence,
+ * assume it is a kernel thread, and rely on
+ * that this case is caught with a later
+ * call. */
+ c->exe = NULL;
+ c->mask |= SD_BUS_CREDS_EXE;
+ } else if (r < 0) {
+ if (r != -EPERM && r != -EACCES)
+ return r;
+ } else
+ c->mask |= SD_BUS_CREDS_EXE;
+ }
+
+ if (missing & SD_BUS_CREDS_CMDLINE) {
+ const char *p;
+
+ p = procfs_file_alloca(pid, "cmdline");
+ r = read_full_file(p, &c->cmdline, &c->cmdline_size);
+ if (r == -ENOENT)
+ return -ESRCH;
+ if (r < 0) {
+ if (r != -EPERM && r != -EACCES)
+ return r;
+ } else {
+ if (c->cmdline_size == 0)
+ c->cmdline = mfree(c->cmdline);
+
+ c->mask |= SD_BUS_CREDS_CMDLINE;
+ }
+ }
+
+ if (tid > 0 && (missing & SD_BUS_CREDS_TID_COMM)) {
+ _cleanup_free_ char *p = NULL;
+
+ if (asprintf(&p, "/proc/"PID_FMT"/task/"PID_FMT"/comm", pid, tid) < 0)
+ return -ENOMEM;
+
+ r = read_one_line_file(p, &c->tid_comm);
+ if (r == -ENOENT)
+ return -ESRCH;
+ if (r < 0) {
+ if (r != -EPERM && r != -EACCES)
+ return r;
+ } else
+ c->mask |= SD_BUS_CREDS_TID_COMM;
+ }
+
+ if (missing & (SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_USER_SLICE|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_OWNER_UID)) {
+
+ if (!c->cgroup) {
+ r = cg_pid_get_path(NULL, pid, &c->cgroup);
+ if (r < 0) {
+ if (r != -EPERM && r != -EACCES)
+ return r;
+ }
+ }
+
+ if (!c->cgroup_root) {
+ r = cg_get_root_path(&c->cgroup_root);
+ if (r < 0)
+ return r;
+ }
+
+ if (c->cgroup)
+ c->mask |= missing & (SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_USER_SLICE|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_OWNER_UID);
+ }
+
+ if (missing & SD_BUS_CREDS_AUDIT_SESSION_ID) {
+ r = audit_session_from_pid(pid, &c->audit_session_id);
+ if (r == -ENODATA) {
+ /* ENODATA means: no audit session id assigned */
+ c->audit_session_id = AUDIT_SESSION_INVALID;
+ c->mask |= SD_BUS_CREDS_AUDIT_SESSION_ID;
+ } else if (r < 0) {
+ if (r != -EOPNOTSUPP && r != -ENOENT && r != -EPERM && r != -EACCES)
+ return r;
+ } else
+ c->mask |= SD_BUS_CREDS_AUDIT_SESSION_ID;
+ }
+
+ if (missing & SD_BUS_CREDS_AUDIT_LOGIN_UID) {
+ r = audit_loginuid_from_pid(pid, &c->audit_login_uid);
+ if (r == -ENODATA) {
+ /* ENODATA means: no audit login uid assigned */
+ c->audit_login_uid = UID_INVALID;
+ c->mask |= SD_BUS_CREDS_AUDIT_LOGIN_UID;
+ } else if (r < 0) {
+ if (r != -EOPNOTSUPP && r != -ENOENT && r != -EPERM && r != -EACCES)
+ return r;
+ } else
+ c->mask |= SD_BUS_CREDS_AUDIT_LOGIN_UID;
+ }
+
+ if (missing & SD_BUS_CREDS_TTY) {
+ r = get_ctty(pid, NULL, &c->tty);
+ if (r == -ENXIO) {
+ /* ENXIO means: process has no controlling TTY */
+ c->tty = NULL;
+ c->mask |= SD_BUS_CREDS_TTY;
+ } else if (r < 0) {
+ if (r != -EPERM && r != -EACCES && r != -ENOENT)
+ return r;
+ } else
+ c->mask |= SD_BUS_CREDS_TTY;
+ }
+
+ /* In case only the exe path was to be read we cannot
+ * distinguish the case where the exe path was unreadable
+ * because the process was a kernel thread, or when the
+ * process didn't exist at all. Hence, let's do a final check,
+ * to be sure. */
+ if (!pid_is_alive(pid))
+ return -ESRCH;
+
+ if (tid > 0 && tid != pid && !pid_is_unwaited(tid))
+ return -ESRCH;
+
+ c->augmented = missing & c->mask;
+
+ return 0;
+}
+
+int bus_creds_extend_by_pid(sd_bus_creds *c, uint64_t mask, sd_bus_creds **ret) {
+ _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *n = NULL;
+ int r;
+
+ assert(c);
+ assert(ret);
+
+ if ((mask & ~c->mask) == 0 || (!(mask & SD_BUS_CREDS_AUGMENT))) {
+ /* There's already all data we need, or augmentation
+ * wasn't turned on. */
+
+ *ret = sd_bus_creds_ref(c);
+ return 0;
+ }
+
+ n = bus_creds_new();
+ if (!n)
+ return -ENOMEM;
+
+ /* Copy the original data over */
+
+ if (c->mask & mask & SD_BUS_CREDS_PID) {
+ n->pid = c->pid;
+ n->mask |= SD_BUS_CREDS_PID;
+ }
+
+ if (c->mask & mask & SD_BUS_CREDS_TID) {
+ n->tid = c->tid;
+ n->mask |= SD_BUS_CREDS_TID;
+ }
+
+ if (c->mask & mask & SD_BUS_CREDS_PPID) {
+ n->ppid = c->ppid;
+ n->mask |= SD_BUS_CREDS_PPID;
+ }
+
+ if (c->mask & mask & SD_BUS_CREDS_UID) {
+ n->uid = c->uid;
+ n->mask |= SD_BUS_CREDS_UID;
+ }
+
+ if (c->mask & mask & SD_BUS_CREDS_EUID) {
+ n->euid = c->euid;
+ n->mask |= SD_BUS_CREDS_EUID;
+ }
+
+ if (c->mask & mask & SD_BUS_CREDS_SUID) {
+ n->suid = c->suid;
+ n->mask |= SD_BUS_CREDS_SUID;
+ }
+
+ if (c->mask & mask & SD_BUS_CREDS_FSUID) {
+ n->fsuid = c->fsuid;
+ n->mask |= SD_BUS_CREDS_FSUID;
+ }
+
+ if (c->mask & mask & SD_BUS_CREDS_GID) {
+ n->gid = c->gid;
+ n->mask |= SD_BUS_CREDS_GID;
+ }
+
+ if (c->mask & mask & SD_BUS_CREDS_EGID) {
+ n->egid = c->egid;
+ n->mask |= SD_BUS_CREDS_EGID;
+ }
+
+ if (c->mask & mask & SD_BUS_CREDS_SGID) {
+ n->sgid = c->sgid;
+ n->mask |= SD_BUS_CREDS_SGID;
+ }
+
+ if (c->mask & mask & SD_BUS_CREDS_FSGID) {
+ n->fsgid = c->fsgid;
+ n->mask |= SD_BUS_CREDS_FSGID;
+ }
+
+ if (c->mask & mask & SD_BUS_CREDS_SUPPLEMENTARY_GIDS) {
+ if (c->supplementary_gids) {
+ n->supplementary_gids = newdup(gid_t, c->supplementary_gids, c->n_supplementary_gids);
+ if (!n->supplementary_gids)
+ return -ENOMEM;
+ n->n_supplementary_gids = c->n_supplementary_gids;
+ } else {
+ n->supplementary_gids = NULL;
+ n->n_supplementary_gids = 0;
+ }
+
+ n->mask |= SD_BUS_CREDS_SUPPLEMENTARY_GIDS;
+ }
+
+ if (c->mask & mask & SD_BUS_CREDS_COMM) {
+ assert(c->comm);
+
+ n->comm = strdup(c->comm);
+ if (!n->comm)
+ return -ENOMEM;
+
+ n->mask |= SD_BUS_CREDS_COMM;
+ }
+
+ if (c->mask & mask & SD_BUS_CREDS_TID_COMM) {
+ assert(c->tid_comm);
+
+ n->tid_comm = strdup(c->tid_comm);
+ if (!n->tid_comm)
+ return -ENOMEM;
+
+ n->mask |= SD_BUS_CREDS_TID_COMM;
+ }
+
+ if (c->mask & mask & SD_BUS_CREDS_EXE) {
+ if (c->exe) {
+ n->exe = strdup(c->exe);
+ if (!n->exe)
+ return -ENOMEM;
+ } else
+ n->exe = NULL;
+
+ n->mask |= SD_BUS_CREDS_EXE;
+ }
+
+ if (c->mask & mask & SD_BUS_CREDS_CMDLINE) {
+ if (c->cmdline) {
+ n->cmdline = memdup(c->cmdline, c->cmdline_size);
+ if (!n->cmdline)
+ return -ENOMEM;
+
+ n->cmdline_size = c->cmdline_size;
+ } else {
+ n->cmdline = NULL;
+ n->cmdline_size = 0;
+ }
+
+ n->mask |= SD_BUS_CREDS_CMDLINE;
+ }
+
+ if (c->mask & mask & (SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_USER_SLICE|SD_BUS_CREDS_OWNER_UID)) {
+ assert(c->cgroup);
+
+ n->cgroup = strdup(c->cgroup);
+ if (!n->cgroup)
+ return -ENOMEM;
+
+ n->cgroup_root = strdup(c->cgroup_root);
+ if (!n->cgroup_root)
+ return -ENOMEM;
+
+ n->mask |= mask & (SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_USER_SLICE|SD_BUS_CREDS_OWNER_UID);
+ }
+
+ if (c->mask & mask & (SD_BUS_CREDS_EFFECTIVE_CAPS|SD_BUS_CREDS_PERMITTED_CAPS|SD_BUS_CREDS_INHERITABLE_CAPS|SD_BUS_CREDS_BOUNDING_CAPS)) {
+ assert(c->capability);
+
+ n->capability = memdup(c->capability, DIV_ROUND_UP(cap_last_cap(), 32U) * 4 * 4);
+ if (!n->capability)
+ return -ENOMEM;
+
+ n->mask |= c->mask & mask & (SD_BUS_CREDS_EFFECTIVE_CAPS|SD_BUS_CREDS_PERMITTED_CAPS|SD_BUS_CREDS_INHERITABLE_CAPS|SD_BUS_CREDS_BOUNDING_CAPS);
+ }
+
+ if (c->mask & mask & SD_BUS_CREDS_SELINUX_CONTEXT) {
+ assert(c->label);
+
+ n->label = strdup(c->label);
+ if (!n->label)
+ return -ENOMEM;
+ n->mask |= SD_BUS_CREDS_SELINUX_CONTEXT;
+ }
+
+ if (c->mask & mask & SD_BUS_CREDS_AUDIT_SESSION_ID) {
+ n->audit_session_id = c->audit_session_id;
+ n->mask |= SD_BUS_CREDS_AUDIT_SESSION_ID;
+ }
+ if (c->mask & mask & SD_BUS_CREDS_AUDIT_LOGIN_UID) {
+ n->audit_login_uid = c->audit_login_uid;
+ n->mask |= SD_BUS_CREDS_AUDIT_LOGIN_UID;
+ }
+
+ if (c->mask & mask & SD_BUS_CREDS_TTY) {
+ if (c->tty) {
+ n->tty = strdup(c->tty);
+ if (!n->tty)
+ return -ENOMEM;
+ } else
+ n->tty = NULL;
+ n->mask |= SD_BUS_CREDS_TTY;
+ }
+
+ if (c->mask & mask & SD_BUS_CREDS_UNIQUE_NAME) {
+ assert(c->unique_name);
+
+ n->unique_name = strdup(c->unique_name);
+ if (!n->unique_name)
+ return -ENOMEM;
+ n->mask |= SD_BUS_CREDS_UNIQUE_NAME;
+ }
+
+ if (c->mask & mask & SD_BUS_CREDS_WELL_KNOWN_NAMES) {
+ if (strv_isempty(c->well_known_names))
+ n->well_known_names = NULL;
+ else {
+ n->well_known_names = strv_copy(c->well_known_names);
+ if (!n->well_known_names)
+ return -ENOMEM;
+ }
+ n->well_known_names_driver = c->well_known_names_driver;
+ n->well_known_names_local = c->well_known_names_local;
+ n->mask |= SD_BUS_CREDS_WELL_KNOWN_NAMES;
+ }
+
+ if (c->mask & mask & SD_BUS_CREDS_DESCRIPTION) {
+ assert(c->description);
+ n->description = strdup(c->description);
+ if (!n->description)
+ return -ENOMEM;
+ n->mask |= SD_BUS_CREDS_DESCRIPTION;
+ }
+
+ n->augmented = c->augmented & n->mask;
+
+ /* Get more data */
+
+ r = bus_creds_add_more(n, mask, 0, 0);
+ if (r < 0)
+ return r;
+
+ *ret = n;
+ n = NULL;
+ return 0;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-creds.h b/src/libsystemd/libsystemd-internal/sd-bus/bus-creds.h
new file mode 100644
index 0000000000..3e2311f91d
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-creds.h
@@ -0,0 +1,90 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <stdbool.h>
+
+#include <systemd/sd-bus.h>
+
+struct sd_bus_creds {
+ bool allocated;
+ unsigned n_ref;
+
+ uint64_t mask;
+ uint64_t augmented;
+
+ uid_t uid;
+ uid_t euid;
+ uid_t suid;
+ uid_t fsuid;
+ gid_t gid;
+ gid_t egid;
+ gid_t sgid;
+ gid_t fsgid;
+
+ gid_t *supplementary_gids;
+ unsigned n_supplementary_gids;
+
+ pid_t ppid;
+ pid_t pid;
+ pid_t tid;
+
+ char *comm;
+ char *tid_comm;
+ char *exe;
+
+ char *cmdline;
+ size_t cmdline_size;
+ char **cmdline_array;
+
+ char *cgroup;
+ char *session;
+ char *unit;
+ char *user_unit;
+ char *slice;
+ char *user_slice;
+
+ char *tty;
+
+ uint32_t *capability;
+
+ uint32_t audit_session_id;
+ uid_t audit_login_uid;
+
+ char *label;
+
+ char *unique_name;
+
+ char **well_known_names;
+ bool well_known_names_driver:1;
+ bool well_known_names_local:1;
+
+ char *cgroup_root;
+
+ char *description, *unescaped_description;
+};
+
+sd_bus_creds* bus_creds_new(void);
+
+void bus_creds_done(sd_bus_creds *c);
+
+int bus_creds_add_more(sd_bus_creds *c, uint64_t mask, pid_t pid, pid_t tid);
+
+int bus_creds_extend_by_pid(sd_bus_creds *c, uint64_t mask, sd_bus_creds **ret);
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-dump.c b/src/libsystemd/libsystemd-internal/sd-bus/bus-dump.c
new file mode 100644
index 0000000000..21a6b20a11
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-dump.c
@@ -0,0 +1,602 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "alloc-util.h"
+#include "bus-dump.h"
+#include "bus-internal.h"
+#include "bus-message.h"
+#include "bus-type.h"
+#include "cap-list.h"
+#include "capability-util.h"
+#include "fileio.h"
+#include "formats-util.h"
+#include "locale-util.h"
+#include "macro.h"
+#include "string-util.h"
+#include "strv.h"
+#include "terminal-util.h"
+#include "util.h"
+
+static char *indent(unsigned level, unsigned flags) {
+ char *p;
+ unsigned n, i = 0;
+
+ n = 0;
+
+ if (flags & BUS_MESSAGE_DUMP_SUBTREE_ONLY && level > 0)
+ level -= 1;
+
+ if (flags & BUS_MESSAGE_DUMP_WITH_HEADER)
+ n += 2;
+
+ p = new(char, n + level*8 + 1);
+ if (!p)
+ return NULL;
+
+ if (flags & BUS_MESSAGE_DUMP_WITH_HEADER) {
+ p[i++] = ' ';
+ p[i++] = ' ';
+ }
+
+ memset(p + i, ' ', level*8);
+ p[i + level*8] = 0;
+
+ return p;
+}
+
+int bus_message_dump(sd_bus_message *m, FILE *f, unsigned flags) {
+ unsigned level = 1;
+ int r;
+
+ assert(m);
+
+ if (!f)
+ f = stdout;
+
+ if (flags & BUS_MESSAGE_DUMP_WITH_HEADER) {
+ fprintf(f,
+ "%s%s%s Type=%s%s%s Endian=%c Flags=%u Version=%u Priority=%"PRIi64,
+ m->header->type == SD_BUS_MESSAGE_METHOD_ERROR ? ansi_highlight_red() :
+ m->header->type == SD_BUS_MESSAGE_METHOD_RETURN ? ansi_highlight_green() :
+ m->header->type != SD_BUS_MESSAGE_SIGNAL ? ansi_highlight() : "", special_glyph(TRIANGULAR_BULLET), ansi_normal(),
+ ansi_highlight(), bus_message_type_to_string(m->header->type), ansi_normal(),
+ m->header->endian,
+ m->header->flags,
+ m->header->version,
+ m->priority);
+
+ /* Display synthetic message serial number in a more readable
+ * format than (uint32_t) -1 */
+ if (BUS_MESSAGE_COOKIE(m) == 0xFFFFFFFFULL)
+ fprintf(f, " Cookie=-1");
+ else
+ fprintf(f, " Cookie=%" PRIu64, BUS_MESSAGE_COOKIE(m));
+
+ if (m->reply_cookie != 0)
+ fprintf(f, " ReplyCookie=%" PRIu64, m->reply_cookie);
+
+ fputs("\n", f);
+
+ if (m->sender)
+ fprintf(f, " Sender=%s%s%s", ansi_highlight(), m->sender, ansi_normal());
+ if (m->destination)
+ fprintf(f, " Destination=%s%s%s", ansi_highlight(), m->destination, ansi_normal());
+ if (m->path)
+ fprintf(f, " Path=%s%s%s", ansi_highlight(), m->path, ansi_normal());
+ if (m->interface)
+ fprintf(f, " Interface=%s%s%s", ansi_highlight(), m->interface, ansi_normal());
+ if (m->member)
+ fprintf(f, " Member=%s%s%s", ansi_highlight(), m->member, ansi_normal());
+
+ if (m->sender || m->destination || m->path || m->interface || m->member)
+ fputs("\n", f);
+
+ if (sd_bus_error_is_set(&m->error))
+ fprintf(f,
+ " ErrorName=%s%s%s"
+ " ErrorMessage=%s\"%s\"%s\n",
+ ansi_highlight_red(), strna(m->error.name), ansi_normal(),
+ ansi_highlight_red(), strna(m->error.message), ansi_normal());
+
+ if (m->monotonic != 0)
+ fprintf(f, " Monotonic="USEC_FMT, m->monotonic);
+ if (m->realtime != 0)
+ fprintf(f, " Realtime="USEC_FMT, m->realtime);
+ if (m->seqnum != 0)
+ fprintf(f, " SequenceNumber=%"PRIu64, m->seqnum);
+
+ if (m->monotonic != 0 || m->realtime != 0 || m->seqnum != 0)
+ fputs("\n", f);
+
+ bus_creds_dump(&m->creds, f, true);
+ }
+
+ r = sd_bus_message_rewind(m, !(flags & BUS_MESSAGE_DUMP_SUBTREE_ONLY));
+ if (r < 0)
+ return log_error_errno(r, "Failed to rewind: %m");
+
+ if (!(flags & BUS_MESSAGE_DUMP_SUBTREE_ONLY)) {
+ _cleanup_free_ char *prefix = NULL;
+
+ prefix = indent(0, flags);
+ if (!prefix)
+ return log_oom();
+
+ fprintf(f, "%sMESSAGE \"%s\" {\n", prefix, strempty(m->root_container.signature));
+ }
+
+ for (;;) {
+ _cleanup_free_ char *prefix = NULL;
+ const char *contents = NULL;
+ char type;
+ union {
+ uint8_t u8;
+ uint16_t u16;
+ int16_t s16;
+ uint32_t u32;
+ int32_t s32;
+ uint64_t u64;
+ int64_t s64;
+ double d64;
+ const char *string;
+ int i;
+ } basic;
+
+ r = sd_bus_message_peek_type(m, &type, &contents);
+ if (r < 0)
+ return log_error_errno(r, "Failed to peek type: %m");
+
+ if (r == 0) {
+ if (level <= 1)
+ break;
+
+ r = sd_bus_message_exit_container(m);
+ if (r < 0)
+ return log_error_errno(r, "Failed to exit container: %m");
+
+ level--;
+
+ prefix = indent(level, flags);
+ if (!prefix)
+ return log_oom();
+
+ fprintf(f, "%s};\n", prefix);
+ continue;
+ }
+
+ prefix = indent(level, flags);
+ if (!prefix)
+ return log_oom();
+
+ if (bus_type_is_container(type) > 0) {
+ r = sd_bus_message_enter_container(m, type, contents);
+ if (r < 0)
+ return log_error_errno(r, "Failed to enter container: %m");
+
+ if (type == SD_BUS_TYPE_ARRAY)
+ fprintf(f, "%sARRAY \"%s\" {\n", prefix, contents);
+ else if (type == SD_BUS_TYPE_VARIANT)
+ fprintf(f, "%sVARIANT \"%s\" {\n", prefix, contents);
+ else if (type == SD_BUS_TYPE_STRUCT)
+ fprintf(f, "%sSTRUCT \"%s\" {\n", prefix, contents);
+ else if (type == SD_BUS_TYPE_DICT_ENTRY)
+ fprintf(f, "%sDICT_ENTRY \"%s\" {\n", prefix, contents);
+
+ level++;
+
+ continue;
+ }
+
+ r = sd_bus_message_read_basic(m, type, &basic);
+ if (r < 0)
+ return log_error_errno(r, "Failed to get basic: %m");
+
+ assert(r > 0);
+
+ switch (type) {
+
+ case SD_BUS_TYPE_BYTE:
+ fprintf(f, "%sBYTE %s%u%s;\n", prefix, ansi_highlight(), basic.u8, ansi_normal());
+ break;
+
+ case SD_BUS_TYPE_BOOLEAN:
+ fprintf(f, "%sBOOLEAN %s%s%s;\n", prefix, ansi_highlight(), true_false(basic.i), ansi_normal());
+ break;
+
+ case SD_BUS_TYPE_INT16:
+ fprintf(f, "%sINT16 %s%i%s;\n", prefix, ansi_highlight(), basic.s16, ansi_normal());
+ break;
+
+ case SD_BUS_TYPE_UINT16:
+ fprintf(f, "%sUINT16 %s%u%s;\n", prefix, ansi_highlight(), basic.u16, ansi_normal());
+ break;
+
+ case SD_BUS_TYPE_INT32:
+ fprintf(f, "%sINT32 %s%i%s;\n", prefix, ansi_highlight(), basic.s32, ansi_normal());
+ break;
+
+ case SD_BUS_TYPE_UINT32:
+ fprintf(f, "%sUINT32 %s%u%s;\n", prefix, ansi_highlight(), basic.u32, ansi_normal());
+ break;
+
+ case SD_BUS_TYPE_INT64:
+ fprintf(f, "%sINT64 %s%"PRIi64"%s;\n", prefix, ansi_highlight(), basic.s64, ansi_normal());
+ break;
+
+ case SD_BUS_TYPE_UINT64:
+ fprintf(f, "%sUINT64 %s%"PRIu64"%s;\n", prefix, ansi_highlight(), basic.u64, ansi_normal());
+ break;
+
+ case SD_BUS_TYPE_DOUBLE:
+ fprintf(f, "%sDOUBLE %s%g%s;\n", prefix, ansi_highlight(), basic.d64, ansi_normal());
+ break;
+
+ case SD_BUS_TYPE_STRING:
+ fprintf(f, "%sSTRING \"%s%s%s\";\n", prefix, ansi_highlight(), basic.string, ansi_normal());
+ break;
+
+ case SD_BUS_TYPE_OBJECT_PATH:
+ fprintf(f, "%sOBJECT_PATH \"%s%s%s\";\n", prefix, ansi_highlight(), basic.string, ansi_normal());
+ break;
+
+ case SD_BUS_TYPE_SIGNATURE:
+ fprintf(f, "%sSIGNATURE \"%s%s%s\";\n", prefix, ansi_highlight(), basic.string, ansi_normal());
+ break;
+
+ case SD_BUS_TYPE_UNIX_FD:
+ fprintf(f, "%sUNIX_FD %s%i%s;\n", prefix, ansi_highlight(), basic.i, ansi_normal());
+ break;
+
+ default:
+ assert_not_reached("Unknown basic type.");
+ }
+ }
+
+ if (!(flags & BUS_MESSAGE_DUMP_SUBTREE_ONLY)) {
+ _cleanup_free_ char *prefix = NULL;
+
+ prefix = indent(0, flags);
+ if (!prefix)
+ return log_oom();
+
+ fprintf(f, "%s};\n\n", prefix);
+ }
+
+ return 0;
+}
+
+static void dump_capabilities(
+ sd_bus_creds *c,
+ FILE *f,
+ const char *name,
+ bool terse,
+ int (*has)(sd_bus_creds *c, int capability)) {
+
+ unsigned long i, last_cap;
+ unsigned n = 0;
+ int r;
+
+ assert(c);
+ assert(f);
+ assert(name);
+ assert(has);
+
+ i = 0;
+ r = has(c, i);
+ if (r < 0)
+ return;
+
+ fprintf(f, "%s%s=%s", terse ? " " : "", name, terse ? "" : ansi_highlight());
+ last_cap = cap_last_cap();
+
+ for (;;) {
+ if (r > 0) {
+
+ if (n > 0)
+ fputc(' ', f);
+ if (n % 4 == 3)
+ fprintf(f, terse ? "\n " : "\n ");
+
+ fprintf(f, "%s", strna(capability_to_name(i)));
+ n++;
+ }
+
+ i++;
+
+ if (i > last_cap)
+ break;
+
+ r = has(c, i);
+ }
+
+ fputs("\n", f);
+
+ if (!terse)
+ fputs(ansi_normal(), f);
+}
+
+int bus_creds_dump(sd_bus_creds *c, FILE *f, bool terse) {
+ uid_t owner, audit_loginuid;
+ uint32_t audit_sessionid;
+ char **cmdline = NULL, **well_known = NULL;
+ const char *prefix, *color, *suffix, *s;
+ int r, q, v, w, z;
+
+ assert(c);
+
+ if (!f)
+ f = stdout;
+
+ if (terse) {
+ prefix = " ";
+ suffix = "";
+ color = "";
+ } else {
+ const char *off;
+
+ prefix = "";
+ color = ansi_highlight();
+
+ off = ansi_normal();
+ suffix = strjoina(off, "\n");
+ }
+
+ if (c->mask & SD_BUS_CREDS_PID)
+ fprintf(f, "%sPID=%s"PID_FMT"%s", prefix, color, c->pid, suffix);
+ if (c->mask & SD_BUS_CREDS_TID)
+ fprintf(f, "%sTID=%s"PID_FMT"%s", prefix, color, c->tid, suffix);
+ if (c->mask & SD_BUS_CREDS_PPID) {
+ if (c->ppid == 0)
+ fprintf(f, "%sPPID=%sn/a%s", prefix, color, suffix);
+ else
+ fprintf(f, "%sPPID=%s"PID_FMT"%s", prefix, color, c->ppid, suffix);
+ }
+ if (c->mask & SD_BUS_CREDS_TTY)
+ fprintf(f, "%sTTY=%s%s%s", prefix, color, strna(c->tty), suffix);
+
+ if (terse && ((c->mask & (SD_BUS_CREDS_PID|SD_BUS_CREDS_TID|SD_BUS_CREDS_PPID|SD_BUS_CREDS_TTY))))
+ fputs("\n", f);
+
+ if (c->mask & SD_BUS_CREDS_UID)
+ fprintf(f, "%sUID=%s"UID_FMT"%s", prefix, color, c->uid, suffix);
+ if (c->mask & SD_BUS_CREDS_EUID)
+ fprintf(f, "%sEUID=%s"UID_FMT"%s", prefix, color, c->euid, suffix);
+ if (c->mask & SD_BUS_CREDS_SUID)
+ fprintf(f, "%sSUID=%s"UID_FMT"%s", prefix, color, c->suid, suffix);
+ if (c->mask & SD_BUS_CREDS_FSUID)
+ fprintf(f, "%sFSUID=%s"UID_FMT"%s", prefix, color, c->fsuid, suffix);
+ r = sd_bus_creds_get_owner_uid(c, &owner);
+ if (r >= 0)
+ fprintf(f, "%sOwnerUID=%s"UID_FMT"%s", prefix, color, owner, suffix);
+ if (c->mask & SD_BUS_CREDS_GID)
+ fprintf(f, "%sGID=%s"GID_FMT"%s", prefix, color, c->gid, suffix);
+ if (c->mask & SD_BUS_CREDS_EGID)
+ fprintf(f, "%sEGID=%s"GID_FMT"%s", prefix, color, c->egid, suffix);
+ if (c->mask & SD_BUS_CREDS_SGID)
+ fprintf(f, "%sSGID=%s"GID_FMT"%s", prefix, color, c->sgid, suffix);
+ if (c->mask & SD_BUS_CREDS_FSGID)
+ fprintf(f, "%sFSGID=%s"GID_FMT"%s", prefix, color, c->fsgid, suffix);
+
+ if (c->mask & SD_BUS_CREDS_SUPPLEMENTARY_GIDS) {
+ unsigned i;
+
+ fprintf(f, "%sSupplementaryGIDs=%s", prefix, color);
+ for (i = 0; i < c->n_supplementary_gids; i++)
+ fprintf(f, "%s" GID_FMT, i > 0 ? " " : "", c->supplementary_gids[i]);
+ fprintf(f, "%s", suffix);
+ }
+
+ if (terse && ((c->mask & (SD_BUS_CREDS_UID|SD_BUS_CREDS_EUID|SD_BUS_CREDS_SUID|SD_BUS_CREDS_FSUID|
+ SD_BUS_CREDS_GID|SD_BUS_CREDS_EGID|SD_BUS_CREDS_SGID|SD_BUS_CREDS_FSGID|
+ SD_BUS_CREDS_SUPPLEMENTARY_GIDS)) || r >= 0))
+ fputs("\n", f);
+
+ if (c->mask & SD_BUS_CREDS_COMM)
+ fprintf(f, "%sComm=%s%s%s", prefix, color, c->comm, suffix);
+ if (c->mask & SD_BUS_CREDS_TID_COMM)
+ fprintf(f, "%sTIDComm=%s%s%s", prefix, color, c->tid_comm, suffix);
+ if (c->mask & SD_BUS_CREDS_EXE)
+ fprintf(f, "%sExe=%s%s%s", prefix, color, strna(c->exe), suffix);
+
+ if (terse && (c->mask & (SD_BUS_CREDS_EXE|SD_BUS_CREDS_COMM|SD_BUS_CREDS_TID_COMM)))
+ fputs("\n", f);
+
+ r = sd_bus_creds_get_cmdline(c, &cmdline);
+ if (r >= 0) {
+ char **i;
+
+ fprintf(f, "%sCommandLine=%s", prefix, color);
+ STRV_FOREACH(i, cmdline) {
+ if (i != cmdline)
+ fputc(' ', f);
+
+ fputs(*i, f);
+ }
+
+ fprintf(f, "%s", suffix);
+ } else if (r != -ENODATA)
+ fprintf(f, "%sCommandLine=%sn/a%s", prefix, color, suffix);
+
+ if (c->mask & SD_BUS_CREDS_SELINUX_CONTEXT)
+ fprintf(f, "%sLabel=%s%s%s", prefix, color, c->label, suffix);
+ if (c->mask & SD_BUS_CREDS_DESCRIPTION)
+ fprintf(f, "%sDescription=%s%s%s", prefix, color, c->description, suffix);
+
+ if (terse && (c->mask & (SD_BUS_CREDS_SELINUX_CONTEXT|SD_BUS_CREDS_DESCRIPTION)))
+ fputs("\n", f);
+
+ if (c->mask & SD_BUS_CREDS_CGROUP)
+ fprintf(f, "%sCGroup=%s%s%s", prefix, color, c->cgroup, suffix);
+ s = NULL;
+ r = sd_bus_creds_get_unit(c, &s);
+ if (r != -ENODATA)
+ fprintf(f, "%sUnit=%s%s%s", prefix, color, strna(s), suffix);
+ s = NULL;
+ v = sd_bus_creds_get_slice(c, &s);
+ if (v != -ENODATA)
+ fprintf(f, "%sSlice=%s%s%s", prefix, color, strna(s), suffix);
+ s = NULL;
+ q = sd_bus_creds_get_user_unit(c, &s);
+ if (q != -ENODATA)
+ fprintf(f, "%sUserUnit=%s%s%s", prefix, color, strna(s), suffix);
+ s = NULL;
+ w = sd_bus_creds_get_user_slice(c, &s);
+ if (w != -ENODATA)
+ fprintf(f, "%sUserSlice=%s%s%s", prefix, color, strna(s), suffix);
+ s = NULL;
+ z = sd_bus_creds_get_session(c, &s);
+ if (z != -ENODATA)
+ fprintf(f, "%sSession=%s%s%s", prefix, color, strna(s), suffix);
+
+ if (terse && ((c->mask & SD_BUS_CREDS_CGROUP) || r != -ENODATA || q != -ENODATA || v != -ENODATA || w != -ENODATA || z != -ENODATA))
+ fputs("\n", f);
+
+ r = sd_bus_creds_get_audit_login_uid(c, &audit_loginuid);
+ if (r >= 0)
+ fprintf(f, "%sAuditLoginUID=%s"UID_FMT"%s", prefix, color, audit_loginuid, suffix);
+ else if (r != -ENODATA)
+ fprintf(f, "%sAuditLoginUID=%sn/a%s", prefix, color, suffix);
+ q = sd_bus_creds_get_audit_session_id(c, &audit_sessionid);
+ if (q >= 0)
+ fprintf(f, "%sAuditSessionID=%s%"PRIu32"%s", prefix, color, audit_sessionid, suffix);
+ else if (q != -ENODATA)
+ fprintf(f, "%sAuditSessionID=%sn/a%s", prefix, color, suffix);
+
+ if (terse && (r != -ENODATA || q != -ENODATA))
+ fputs("\n", f);
+
+ if (c->mask & SD_BUS_CREDS_UNIQUE_NAME)
+ fprintf(f, "%sUniqueName=%s%s%s", prefix, color, c->unique_name, suffix);
+
+ if (sd_bus_creds_get_well_known_names(c, &well_known) >= 0) {
+ char **i;
+
+ fprintf(f, "%sWellKnownNames=%s", prefix, color);
+ STRV_FOREACH(i, well_known) {
+ if (i != well_known)
+ fputc(' ', f);
+
+ fputs(*i, f);
+ }
+
+ fprintf(f, "%s", suffix);
+ }
+
+ if (terse && (c->mask & SD_BUS_CREDS_UNIQUE_NAME || well_known))
+ fputc('\n', f);
+
+ dump_capabilities(c, f, "EffectiveCapabilities", terse, sd_bus_creds_has_effective_cap);
+ dump_capabilities(c, f, "PermittedCapabilities", terse, sd_bus_creds_has_permitted_cap);
+ dump_capabilities(c, f, "InheritableCapabilities", terse, sd_bus_creds_has_inheritable_cap);
+ dump_capabilities(c, f, "BoundingCapabilities", terse, sd_bus_creds_has_bounding_cap);
+
+ return 0;
+}
+
+/*
+ * For details about the file format, see:
+ *
+ * http://wiki.wireshark.org/Development/LibpcapFileFormat
+ */
+
+typedef struct _packed_ pcap_hdr_s {
+ uint32_t magic_number; /* magic number */
+ uint16_t version_major; /* major version number */
+ uint16_t version_minor; /* minor version number */
+ int32_t thiszone; /* GMT to local correction */
+ uint32_t sigfigs; /* accuracy of timestamps */
+ uint32_t snaplen; /* max length of captured packets, in octets */
+ uint32_t network; /* data link type */
+} pcap_hdr_t ;
+
+typedef struct _packed_ pcaprec_hdr_s {
+ uint32_t ts_sec; /* timestamp seconds */
+ uint32_t ts_usec; /* timestamp microseconds */
+ uint32_t incl_len; /* number of octets of packet saved in file */
+ uint32_t orig_len; /* actual length of packet */
+} pcaprec_hdr_t;
+
+int bus_pcap_header(size_t snaplen, FILE *f) {
+
+ pcap_hdr_t hdr = {
+ .magic_number = 0xa1b2c3d4U,
+ .version_major = 2,
+ .version_minor = 4,
+ .thiszone = 0, /* UTC */
+ .sigfigs = 0,
+ .network = 231, /* D-Bus */
+ };
+
+ if (!f)
+ f = stdout;
+
+ assert(snaplen > 0);
+ assert((size_t) (uint32_t) snaplen == snaplen);
+
+ hdr.snaplen = (uint32_t) snaplen;
+
+ fwrite(&hdr, 1, sizeof(hdr), f);
+
+ return fflush_and_check(f);
+}
+
+int bus_message_pcap_frame(sd_bus_message *m, size_t snaplen, FILE *f) {
+ struct bus_body_part *part;
+ pcaprec_hdr_t hdr = {};
+ struct timeval tv;
+ unsigned i;
+ size_t w;
+
+ if (!f)
+ f = stdout;
+
+ assert(m);
+ assert(snaplen > 0);
+ assert((size_t) (uint32_t) snaplen == snaplen);
+
+ if (m->realtime != 0)
+ timeval_store(&tv, m->realtime);
+ else
+ assert_se(gettimeofday(&tv, NULL) >= 0);
+
+ hdr.ts_sec = tv.tv_sec;
+ hdr.ts_usec = tv.tv_usec;
+ hdr.orig_len = BUS_MESSAGE_SIZE(m);
+ hdr.incl_len = MIN(hdr.orig_len, snaplen);
+
+ /* write the pcap header */
+ fwrite(&hdr, 1, sizeof(hdr), f);
+
+ /* write the dbus header */
+ w = MIN(BUS_MESSAGE_BODY_BEGIN(m), snaplen);
+ fwrite(m->header, 1, w, f);
+ snaplen -= w;
+
+ /* write the dbus body */
+ MESSAGE_FOREACH_PART(part, i, m) {
+ if (snaplen <= 0)
+ break;
+
+ w = MIN(part->size, snaplen);
+ fwrite(part->data, 1, w, f);
+ snaplen -= w;
+ }
+
+ return fflush_and_check(f);
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-dump.h b/src/libsystemd/libsystemd-internal/sd-bus/bus-dump.h
new file mode 100644
index 0000000000..68fa043786
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-dump.h
@@ -0,0 +1,37 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <stdbool.h>
+#include <stdio.h>
+
+#include <systemd/sd-bus.h>
+
+enum {
+ BUS_MESSAGE_DUMP_WITH_HEADER = 1,
+ BUS_MESSAGE_DUMP_SUBTREE_ONLY = 2,
+};
+
+int bus_message_dump(sd_bus_message *m, FILE *f, unsigned flags);
+
+int bus_creds_dump(sd_bus_creds *c, FILE *f, bool terse);
+
+int bus_pcap_header(size_t snaplen, FILE *f);
+int bus_message_pcap_frame(sd_bus_message *m, size_t snaplen, FILE *f);
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-error.c b/src/libsystemd/libsystemd-internal/sd-bus/bus-error.c
new file mode 100644
index 0000000000..b6bb0c4a83
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-error.c
@@ -0,0 +1,608 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <errno.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <systemd/sd-bus.h>
+
+#include "alloc-util.h"
+#include "bus-error.h"
+#include "errno-list.h"
+#include "string-util.h"
+#include "util.h"
+
+BUS_ERROR_MAP_ELF_REGISTER const sd_bus_error_map bus_standard_errors[] = {
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.Failed", EACCES),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.NoMemory", ENOMEM),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.ServiceUnknown", EHOSTUNREACH),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.NameHasNoOwner", ENXIO),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.NoReply", ETIMEDOUT),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.IOError", EIO),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.BadAddress", EADDRNOTAVAIL),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.NotSupported", EOPNOTSUPP),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.LimitsExceeded", ENOBUFS),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.AccessDenied", EACCES),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.AuthFailed", EACCES),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.InteractiveAuthorizationRequired", EACCES),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.NoServer", EHOSTDOWN),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.Timeout", ETIMEDOUT),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.NoNetwork", ENONET),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.AddressInUse", EADDRINUSE),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.Disconnected", ECONNRESET),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.InvalidArgs", EINVAL),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.FileNotFound", ENOENT),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.FileExists", EEXIST),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.UnknownMethod", EBADR),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.UnknownObject", EBADR),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.UnknownInterface", EBADR),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.UnknownProperty", EBADR),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.PropertyReadOnly", EROFS),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.UnixProcessIdUnknown", ESRCH),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.InvalidSignature", EINVAL),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.InconsistentMessage", EBADMSG),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.TimedOut", ETIMEDOUT),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.MatchRuleInvalid", EINVAL),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.InvalidFileContent", EINVAL),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.MatchRuleNotFound", ENOENT),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.SELinuxSecurityContextUnknown", ESRCH),
+ SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.ObjectPathInUse", EBUSY),
+ SD_BUS_ERROR_MAP_END
+};
+
+/* GCC maps this magically to the beginning and end of the BUS_ERROR_MAP section.
+ * Hide them; for currently unknown reasons they get exported to the shared libries
+ * even without being listed in the sym file. */
+extern const sd_bus_error_map __start_BUS_ERROR_MAP[] _hidden_;
+extern const sd_bus_error_map __stop_BUS_ERROR_MAP[] _hidden_;
+
+/* Additional maps registered with sd_bus_error_add_map() are in this
+ * NULL terminated array */
+static const sd_bus_error_map **additional_error_maps = NULL;
+
+static int bus_error_name_to_errno(const char *name) {
+ const sd_bus_error_map **map, *m;
+ const char *p;
+ int r;
+
+ if (!name)
+ return EINVAL;
+
+ p = startswith(name, "System.Error.");
+ if (p) {
+ r = errno_from_name(p);
+ if (r < 0)
+ return EIO;
+
+ return r;
+ }
+
+ if (additional_error_maps)
+ for (map = additional_error_maps; *map; map++)
+ for (m = *map;; m++) {
+ /* For additional error maps the end marker is actually the end marker */
+ if (m->code == BUS_ERROR_MAP_END_MARKER)
+ break;
+
+ if (streq(m->name, name))
+ return m->code;
+ }
+
+ m = __start_BUS_ERROR_MAP;
+ while (m < __stop_BUS_ERROR_MAP) {
+ /* For magic ELF error maps, the end marker might
+ * appear in the middle of things, since multiple maps
+ * might appear in the same section. Hence, let's skip
+ * over it, but realign the pointer to the next 8 byte
+ * boundary, which is the selected alignment for the
+ * arrays. */
+ if (m->code == BUS_ERROR_MAP_END_MARKER) {
+ m = ALIGN8_PTR(m+1);
+ continue;
+ }
+
+ if (streq(m->name, name))
+ return m->code;
+
+ m++;
+ }
+
+ return EIO;
+}
+
+static sd_bus_error errno_to_bus_error_const(int error) {
+
+ if (error < 0)
+ error = -error;
+
+ switch (error) {
+
+ case ENOMEM:
+ return BUS_ERROR_OOM;
+
+ case EPERM:
+ case EACCES:
+ return SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_ACCESS_DENIED, "Access denied");
+
+ case EINVAL:
+ return SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_INVALID_ARGS, "Invalid argument");
+
+ case ESRCH:
+ return SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_UNIX_PROCESS_ID_UNKNOWN, "No such process");
+
+ case ENOENT:
+ return SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_FILE_NOT_FOUND, "File not found");
+
+ case EEXIST:
+ return SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_FILE_EXISTS, "File exists");
+
+ case ETIMEDOUT:
+ case ETIME:
+ return SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_TIMEOUT, "Timed out");
+
+ case EIO:
+ return SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_IO_ERROR, "Input/output error");
+
+ case ENETRESET:
+ case ECONNABORTED:
+ case ECONNRESET:
+ return SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_DISCONNECTED, "Disconnected");
+
+ case EOPNOTSUPP:
+ return SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_NOT_SUPPORTED, "Not supported");
+
+ case EADDRNOTAVAIL:
+ return SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_BAD_ADDRESS, "Address not available");
+
+ case ENOBUFS:
+ return SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_LIMITS_EXCEEDED, "Limits exceeded");
+
+ case EADDRINUSE:
+ return SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_ADDRESS_IN_USE, "Address in use");
+
+ case EBADMSG:
+ return SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_INCONSISTENT_MESSAGE, "Inconsistent message");
+ }
+
+ return SD_BUS_ERROR_NULL;
+}
+
+static int errno_to_bus_error_name_new(int error, char **ret) {
+ const char *name;
+ char *n;
+
+ if (error < 0)
+ error = -error;
+
+ name = errno_to_name(error);
+ if (!name)
+ return 0;
+
+ n = strappend("System.Error.", name);
+ if (!n)
+ return -ENOMEM;
+
+ *ret = n;
+ return 1;
+}
+
+bool bus_error_is_dirty(sd_bus_error *e) {
+ if (!e)
+ return false;
+
+ return e->name || e->message || e->_need_free != 0;
+}
+
+_public_ void sd_bus_error_free(sd_bus_error *e) {
+ if (!e)
+ return;
+
+ if (e->_need_free > 0) {
+ free((void*) e->name);
+ free((void*) e->message);
+ }
+
+ e->name = e->message = NULL;
+ e->_need_free = 0;
+}
+
+_public_ int sd_bus_error_set(sd_bus_error *e, const char *name, const char *message) {
+
+ if (!name)
+ return 0;
+ if (!e)
+ goto finish;
+
+ assert_return(!bus_error_is_dirty(e), -EINVAL);
+
+ e->name = strdup(name);
+ if (!e->name) {
+ *e = BUS_ERROR_OOM;
+ return -ENOMEM;
+ }
+
+ if (message)
+ e->message = strdup(message);
+
+ e->_need_free = 1;
+
+finish:
+ return -bus_error_name_to_errno(name);
+}
+
+int bus_error_setfv(sd_bus_error *e, const char *name, const char *format, va_list ap) {
+
+ if (!name)
+ return 0;
+
+ if (e) {
+ assert_return(!bus_error_is_dirty(e), -EINVAL);
+
+ e->name = strdup(name);
+ if (!e->name) {
+ *e = BUS_ERROR_OOM;
+ return -ENOMEM;
+ }
+
+ /* If we hit OOM on formatting the pretty message, we ignore
+ * this, since we at least managed to write the error name */
+ if (format)
+ (void) vasprintf((char**) &e->message, format, ap);
+
+ e->_need_free = 1;
+ }
+
+ return -bus_error_name_to_errno(name);
+}
+
+_public_ int sd_bus_error_setf(sd_bus_error *e, const char *name, const char *format, ...) {
+
+ if (format) {
+ int r;
+ va_list ap;
+
+ va_start(ap, format);
+ r = bus_error_setfv(e, name, format, ap);
+ va_end(ap);
+
+ return r;
+ }
+
+ return sd_bus_error_set(e, name, NULL);
+}
+
+_public_ int sd_bus_error_copy(sd_bus_error *dest, const sd_bus_error *e) {
+
+ if (!sd_bus_error_is_set(e))
+ return 0;
+ if (!dest)
+ goto finish;
+
+ assert_return(!bus_error_is_dirty(dest), -EINVAL);
+
+ /*
+ * _need_free < 0 indicates that the error is temporarily const, needs deep copying
+ * _need_free == 0 indicates that the error is perpetually const, needs no deep copying
+ * _need_free > 0 indicates that the error is fully dynamic, needs deep copying
+ */
+
+ if (e->_need_free == 0)
+ *dest = *e;
+ else {
+ dest->name = strdup(e->name);
+ if (!dest->name) {
+ *dest = BUS_ERROR_OOM;
+ return -ENOMEM;
+ }
+
+ if (e->message)
+ dest->message = strdup(e->message);
+
+ dest->_need_free = 1;
+ }
+
+finish:
+ return -bus_error_name_to_errno(e->name);
+}
+
+_public_ int sd_bus_error_set_const(sd_bus_error *e, const char *name, const char *message) {
+ if (!name)
+ return 0;
+ if (!e)
+ goto finish;
+
+ assert_return(!bus_error_is_dirty(e), -EINVAL);
+
+ *e = SD_BUS_ERROR_MAKE_CONST(name, message);
+
+finish:
+ return -bus_error_name_to_errno(name);
+}
+
+_public_ int sd_bus_error_is_set(const sd_bus_error *e) {
+ if (!e)
+ return 0;
+
+ return !!e->name;
+}
+
+_public_ int sd_bus_error_has_name(const sd_bus_error *e, const char *name) {
+ if (!e)
+ return 0;
+
+ return streq_ptr(e->name, name);
+}
+
+_public_ int sd_bus_error_get_errno(const sd_bus_error* e) {
+ if (!e)
+ return 0;
+
+ if (!e->name)
+ return 0;
+
+ return bus_error_name_to_errno(e->name);
+}
+
+static void bus_error_strerror(sd_bus_error *e, int error) {
+ size_t k = 64;
+ char *m;
+
+ assert(e);
+
+ for (;;) {
+ char *x;
+
+ m = new(char, k);
+ if (!m)
+ return;
+
+ errno = 0;
+ x = strerror_r(error, m, k);
+ if (errno == ERANGE || strlen(x) >= k - 1) {
+ free(m);
+ k *= 2;
+ continue;
+ }
+
+ if (errno) {
+ free(m);
+ return;
+ }
+
+ if (x == m) {
+ if (e->_need_free > 0) {
+ /* Error is already dynamic, let's just update the message */
+ free((char*) e->message);
+ e->message = x;
+
+ } else {
+ char *t;
+ /* Error was const so far, let's make it dynamic, if we can */
+
+ t = strdup(e->name);
+ if (!t) {
+ free(m);
+ return;
+ }
+
+ e->_need_free = 1;
+ e->name = t;
+ e->message = x;
+ }
+ } else {
+ free(m);
+
+ if (e->_need_free > 0) {
+ char *t;
+
+ /* Error is dynamic, let's hence make the message also dynamic */
+ t = strdup(x);
+ if (!t)
+ return;
+
+ free((char*) e->message);
+ e->message = t;
+ } else {
+ /* Error is const, hence we can just override */
+ e->message = x;
+ }
+ }
+
+ return;
+ }
+}
+
+_public_ int sd_bus_error_set_errno(sd_bus_error *e, int error) {
+
+ if (error < 0)
+ error = -error;
+
+ if (!e)
+ return -error;
+ if (error == 0)
+ return -error;
+
+ assert_return(!bus_error_is_dirty(e), -EINVAL);
+
+ /* First, try a const translation */
+ *e = errno_to_bus_error_const(error);
+
+ if (!sd_bus_error_is_set(e)) {
+ int k;
+
+ /* If that didn't work, try a dynamic one. */
+
+ k = errno_to_bus_error_name_new(error, (char**) &e->name);
+ if (k > 0)
+ e->_need_free = 1;
+ else if (k < 0) {
+ *e = BUS_ERROR_OOM;
+ return -error;
+ } else
+ *e = BUS_ERROR_FAILED;
+ }
+
+ /* Now, fill in the message from strerror() if we can */
+ bus_error_strerror(e, error);
+ return -error;
+}
+
+_public_ int sd_bus_error_set_errnofv(sd_bus_error *e, int error, const char *format, va_list ap) {
+ PROTECT_ERRNO;
+ int r;
+
+ if (error < 0)
+ error = -error;
+
+ if (!e)
+ return -error;
+ if (error == 0)
+ return 0;
+
+ assert_return(!bus_error_is_dirty(e), -EINVAL);
+
+ /* First, try a const translation */
+ *e = errno_to_bus_error_const(error);
+
+ if (!sd_bus_error_is_set(e)) {
+ int k;
+
+ /* If that didn't work, try a dynamic one */
+
+ k = errno_to_bus_error_name_new(error, (char**) &e->name);
+ if (k > 0)
+ e->_need_free = 1;
+ else if (k < 0) {
+ *e = BUS_ERROR_OOM;
+ return -ENOMEM;
+ } else
+ *e = BUS_ERROR_FAILED;
+ }
+
+ if (format) {
+ char *m;
+
+ /* Then, let's try to fill in the supplied message */
+
+ errno = error; /* Make sure that %m resolves to the specified error */
+ r = vasprintf(&m, format, ap);
+ if (r >= 0) {
+
+ if (e->_need_free <= 0) {
+ char *t;
+
+ t = strdup(e->name);
+ if (t) {
+ e->_need_free = 1;
+ e->name = t;
+ e->message = m;
+ return -error;
+ }
+
+ free(m);
+ } else {
+ free((char*) e->message);
+ e->message = m;
+ return -error;
+ }
+ }
+ }
+
+ /* If that didn't work, use strerror() for the message */
+ bus_error_strerror(e, error);
+ return -error;
+}
+
+_public_ int sd_bus_error_set_errnof(sd_bus_error *e, int error, const char *format, ...) {
+ int r;
+
+ if (error < 0)
+ error = -error;
+
+ if (!e)
+ return -error;
+ if (error == 0)
+ return 0;
+
+ assert_return(!bus_error_is_dirty(e), -EINVAL);
+
+ if (format) {
+ va_list ap;
+
+ va_start(ap, format);
+ r = sd_bus_error_set_errnofv(e, error, format, ap);
+ va_end(ap);
+
+ return r;
+ }
+
+ return sd_bus_error_set_errno(e, error);
+}
+
+const char *bus_error_message(const sd_bus_error *e, int error) {
+
+ if (e) {
+ /* Sometimes, the D-Bus server is a little bit too verbose with
+ * its error messages, so let's override them here */
+ if (sd_bus_error_has_name(e, SD_BUS_ERROR_ACCESS_DENIED))
+ return "Access denied";
+
+ if (e->message)
+ return e->message;
+ }
+
+ if (error < 0)
+ error = -error;
+
+ return strerror(error);
+}
+
+static bool map_ok(const sd_bus_error_map *map) {
+ for (; map->code != BUS_ERROR_MAP_END_MARKER; map++)
+ if (!map->name || map->code <=0)
+ return false;
+ return true;
+}
+
+_public_ int sd_bus_error_add_map(const sd_bus_error_map *map) {
+ const sd_bus_error_map **maps = NULL;
+ unsigned n = 0;
+
+ assert_return(map, -EINVAL);
+ assert_return(map_ok(map), -EINVAL);
+
+ if (additional_error_maps)
+ for (; additional_error_maps[n] != NULL; n++)
+ if (additional_error_maps[n] == map)
+ return 0;
+
+ maps = realloc_multiply(additional_error_maps, sizeof(struct sd_bus_error_map*), n + 2);
+ if (!maps)
+ return -ENOMEM;
+
+ maps[n] = map;
+ maps[n+1] = NULL;
+
+ additional_error_maps = maps;
+ return 1;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-error.h b/src/libsystemd/libsystemd-internal/sd-bus/bus-error.h
new file mode 100644
index 0000000000..b7aedf406d
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-error.h
@@ -0,0 +1,64 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <stdbool.h>
+
+#include <systemd/sd-bus.h>
+
+#include "macro.h"
+
+bool bus_error_is_dirty(sd_bus_error *e);
+
+const char *bus_error_message(const sd_bus_error *e, int error);
+
+int bus_error_setfv(sd_bus_error *e, const char *name, const char *format, va_list ap) _printf_(3,0);
+int bus_error_set_errnofv(sd_bus_error *e, int error, const char *format, va_list ap) _printf_(3,0);
+
+#define BUS_ERROR_OOM SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_NO_MEMORY, "Out of memory")
+#define BUS_ERROR_FAILED SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_FAILED, "Operation failed")
+
+/*
+ * There are two ways to register error maps with the error translation
+ * logic: by using BUS_ERROR_MAP_ELF_REGISTER, which however only
+ * works when linked into the same ELF module, or via
+ * sd_bus_error_add_map() which is the official, external API, that
+ * works from any module.
+ *
+ * Note that BUS_ERROR_MAP_ELF_REGISTER has to be used as decorator in
+ * the bus error table, and BUS_ERROR_MAP_ELF_USE has to be used at
+ * least once per compilation unit (i.e. per library), to ensure that
+ * the error map is really added to the final binary.
+ */
+
+#define BUS_ERROR_MAP_ELF_REGISTER \
+ __attribute__ ((__section__("BUS_ERROR_MAP"))) \
+ __attribute__ ((__used__)) \
+ __attribute__ ((aligned(8)))
+
+#define BUS_ERROR_MAP_ELF_USE(errors) \
+ extern const sd_bus_error_map errors[]; \
+ __attribute__ ((used)) static const sd_bus_error_map * const CONCATENATE(errors ## _copy_, __COUNTER__) = errors;
+
+/* We use something exotic as end marker, to ensure people build the
+ * maps using the macsd-ros. */
+#define BUS_ERROR_MAP_END_MARKER -'x'
+
+BUS_ERROR_MAP_ELF_USE(bus_standard_errors);
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-gvariant.c b/src/libsystemd/libsystemd-internal/sd-bus/bus-gvariant.c
new file mode 100644
index 0000000000..58782767fa
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-gvariant.c
@@ -0,0 +1,311 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "bus-gvariant.h"
+#include "bus-signature.h"
+#include "bus-type.h"
+
+int bus_gvariant_get_size(const char *signature) {
+ const char *p;
+ int sum = 0, r;
+
+ /* For fixed size structs. Fails for variable size structs. */
+
+ p = signature;
+ while (*p != 0) {
+ size_t n;
+
+ r = signature_element_length(p, &n);
+ if (r < 0)
+ return r;
+ else {
+ char t[n+1];
+
+ memcpy(t, p, n);
+ t[n] = 0;
+
+ r = bus_gvariant_get_alignment(t);
+ if (r < 0)
+ return r;
+
+ sum = ALIGN_TO(sum, r);
+ }
+
+ switch (*p) {
+
+ case SD_BUS_TYPE_BOOLEAN:
+ case SD_BUS_TYPE_BYTE:
+ sum += 1;
+ break;
+
+ case SD_BUS_TYPE_INT16:
+ case SD_BUS_TYPE_UINT16:
+ sum += 2;
+ break;
+
+ case SD_BUS_TYPE_INT32:
+ case SD_BUS_TYPE_UINT32:
+ case SD_BUS_TYPE_UNIX_FD:
+ sum += 4;
+ break;
+
+ case SD_BUS_TYPE_INT64:
+ case SD_BUS_TYPE_UINT64:
+ case SD_BUS_TYPE_DOUBLE:
+ sum += 8;
+ break;
+
+ case SD_BUS_TYPE_STRUCT_BEGIN:
+ case SD_BUS_TYPE_DICT_ENTRY_BEGIN: {
+ if (n == 2) {
+ /* unary type () has fixed size of 1 */
+ r = 1;
+ } else {
+ char t[n-1];
+
+ memcpy(t, p + 1, n - 2);
+ t[n - 2] = 0;
+
+ r = bus_gvariant_get_size(t);
+ if (r < 0)
+ return r;
+ }
+
+ sum += r;
+ break;
+ }
+
+ case SD_BUS_TYPE_STRING:
+ case SD_BUS_TYPE_OBJECT_PATH:
+ case SD_BUS_TYPE_SIGNATURE:
+ case SD_BUS_TYPE_ARRAY:
+ case SD_BUS_TYPE_VARIANT:
+ return -EINVAL;
+
+ default:
+ assert_not_reached("Unknown signature type");
+ }
+
+ p += n;
+ }
+
+ r = bus_gvariant_get_alignment(signature);
+ if (r < 0)
+ return r;
+
+ return ALIGN_TO(sum, r);
+}
+
+int bus_gvariant_get_alignment(const char *signature) {
+ size_t alignment = 1;
+ const char *p;
+ int r;
+
+ p = signature;
+ while (*p != 0 && alignment < 8) {
+ size_t n;
+ int a;
+
+ r = signature_element_length(p, &n);
+ if (r < 0)
+ return r;
+
+ switch (*p) {
+
+ case SD_BUS_TYPE_BYTE:
+ case SD_BUS_TYPE_BOOLEAN:
+ case SD_BUS_TYPE_STRING:
+ case SD_BUS_TYPE_OBJECT_PATH:
+ case SD_BUS_TYPE_SIGNATURE:
+ a = 1;
+ break;
+
+ case SD_BUS_TYPE_INT16:
+ case SD_BUS_TYPE_UINT16:
+ a = 2;
+ break;
+
+ case SD_BUS_TYPE_INT32:
+ case SD_BUS_TYPE_UINT32:
+ case SD_BUS_TYPE_UNIX_FD:
+ a = 4;
+ break;
+
+ case SD_BUS_TYPE_INT64:
+ case SD_BUS_TYPE_UINT64:
+ case SD_BUS_TYPE_DOUBLE:
+ case SD_BUS_TYPE_VARIANT:
+ a = 8;
+ break;
+
+ case SD_BUS_TYPE_ARRAY: {
+ char t[n];
+
+ memcpy(t, p + 1, n - 1);
+ t[n - 1] = 0;
+
+ a = bus_gvariant_get_alignment(t);
+ break;
+ }
+
+ case SD_BUS_TYPE_STRUCT_BEGIN:
+ case SD_BUS_TYPE_DICT_ENTRY_BEGIN: {
+ char t[n-1];
+
+ memcpy(t, p + 1, n - 2);
+ t[n - 2] = 0;
+
+ a = bus_gvariant_get_alignment(t);
+ break;
+ }
+
+ default:
+ assert_not_reached("Unknown signature type");
+ }
+
+ if (a < 0)
+ return a;
+
+ assert(a > 0 && a <= 8);
+ if ((size_t) a > alignment)
+ alignment = (size_t) a;
+
+ p += n;
+ }
+
+ return alignment;
+}
+
+int bus_gvariant_is_fixed_size(const char *signature) {
+ const char *p;
+ int r;
+
+ assert(signature);
+
+ p = signature;
+ while (*p != 0) {
+ size_t n;
+
+ r = signature_element_length(p, &n);
+ if (r < 0)
+ return r;
+
+ switch (*p) {
+
+ case SD_BUS_TYPE_STRING:
+ case SD_BUS_TYPE_OBJECT_PATH:
+ case SD_BUS_TYPE_SIGNATURE:
+ case SD_BUS_TYPE_ARRAY:
+ case SD_BUS_TYPE_VARIANT:
+ return 0;
+
+ case SD_BUS_TYPE_BYTE:
+ case SD_BUS_TYPE_BOOLEAN:
+ case SD_BUS_TYPE_INT16:
+ case SD_BUS_TYPE_UINT16:
+ case SD_BUS_TYPE_INT32:
+ case SD_BUS_TYPE_UINT32:
+ case SD_BUS_TYPE_UNIX_FD:
+ case SD_BUS_TYPE_INT64:
+ case SD_BUS_TYPE_UINT64:
+ case SD_BUS_TYPE_DOUBLE:
+ break;
+
+ case SD_BUS_TYPE_STRUCT_BEGIN:
+ case SD_BUS_TYPE_DICT_ENTRY_BEGIN: {
+ char t[n-1];
+
+ memcpy(t, p + 1, n - 2);
+ t[n - 2] = 0;
+
+ r = bus_gvariant_is_fixed_size(t);
+ if (r <= 0)
+ return r;
+ break;
+ }
+
+ default:
+ assert_not_reached("Unknown signature type");
+ }
+
+ p += n;
+ }
+
+ return true;
+}
+
+size_t bus_gvariant_determine_word_size(size_t sz, size_t extra) {
+ if (sz + extra <= 0xFF)
+ return 1;
+ else if (sz + extra*2 <= 0xFFFF)
+ return 2;
+ else if (sz + extra*4 <= 0xFFFFFFFF)
+ return 4;
+ else
+ return 8;
+}
+
+size_t bus_gvariant_read_word_le(void *p, size_t sz) {
+ union {
+ uint16_t u16;
+ uint32_t u32;
+ uint64_t u64;
+ } x;
+
+ assert(p);
+
+ if (sz == 1)
+ return *(uint8_t*) p;
+
+ memcpy(&x, p, sz);
+
+ if (sz == 2)
+ return le16toh(x.u16);
+ else if (sz == 4)
+ return le32toh(x.u32);
+ else if (sz == 8)
+ return le64toh(x.u64);
+
+ assert_not_reached("unknown word width");
+}
+
+void bus_gvariant_write_word_le(void *p, size_t sz, size_t value) {
+ union {
+ uint16_t u16;
+ uint32_t u32;
+ uint64_t u64;
+ } x;
+
+ assert(p);
+ assert(sz == 8 || (value < (1ULL << (sz*8))));
+
+ if (sz == 1) {
+ *(uint8_t*) p = value;
+ return;
+ } else if (sz == 2)
+ x.u16 = htole16((uint16_t) value);
+ else if (sz == 4)
+ x.u32 = htole32((uint32_t) value);
+ else if (sz == 8)
+ x.u64 = htole64((uint64_t) value);
+ else
+ assert_not_reached("unknown word width");
+
+ memcpy(p, &x, sz);
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-gvariant.h b/src/libsystemd/libsystemd-internal/sd-bus/bus-gvariant.h
new file mode 100644
index 0000000000..6da637fb05
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-gvariant.h
@@ -0,0 +1,30 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "macro.h"
+
+int bus_gvariant_get_size(const char *signature) _pure_;
+int bus_gvariant_get_alignment(const char *signature) _pure_;
+int bus_gvariant_is_fixed_size(const char *signature) _pure_;
+
+size_t bus_gvariant_determine_word_size(size_t sz, size_t extra);
+void bus_gvariant_write_word_le(void *p, size_t sz, size_t value);
+size_t bus_gvariant_read_word_le(void *p, size_t sz);
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-internal.c b/src/libsystemd/libsystemd-internal/sd-bus/bus-internal.c
new file mode 100644
index 0000000000..caca679086
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-internal.c
@@ -0,0 +1,374 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "alloc-util.h"
+#include "bus-internal.h"
+#include "bus-message.h"
+#include "hexdecoct.h"
+#include "string-util.h"
+
+bool object_path_is_valid(const char *p) {
+ const char *q;
+ bool slash;
+
+ if (!p)
+ return false;
+
+ if (p[0] != '/')
+ return false;
+
+ if (p[1] == 0)
+ return true;
+
+ for (slash = true, q = p+1; *q; q++)
+ if (*q == '/') {
+ if (slash)
+ return false;
+
+ slash = true;
+ } else {
+ bool good;
+
+ good =
+ (*q >= 'a' && *q <= 'z') ||
+ (*q >= 'A' && *q <= 'Z') ||
+ (*q >= '0' && *q <= '9') ||
+ *q == '_';
+
+ if (!good)
+ return false;
+
+ slash = false;
+ }
+
+ if (slash)
+ return false;
+
+ return true;
+}
+
+char* object_path_startswith(const char *a, const char *b) {
+ const char *p;
+
+ if (!object_path_is_valid(a) ||
+ !object_path_is_valid(b))
+ return NULL;
+
+ if (streq(b, "/"))
+ return (char*) a + 1;
+
+ p = startswith(a, b);
+ if (!p)
+ return NULL;
+
+ if (*p == 0)
+ return (char*) p;
+
+ if (*p == '/')
+ return (char*) p + 1;
+
+ return NULL;
+}
+
+bool interface_name_is_valid(const char *p) {
+ const char *q;
+ bool dot, found_dot = false;
+
+ if (isempty(p))
+ return false;
+
+ for (dot = true, q = p; *q; q++)
+ if (*q == '.') {
+ if (dot)
+ return false;
+
+ found_dot = dot = true;
+ } else {
+ bool good;
+
+ good =
+ (*q >= 'a' && *q <= 'z') ||
+ (*q >= 'A' && *q <= 'Z') ||
+ (!dot && *q >= '0' && *q <= '9') ||
+ *q == '_';
+
+ if (!good)
+ return false;
+
+ dot = false;
+ }
+
+ if (q - p > 255)
+ return false;
+
+ if (dot)
+ return false;
+
+ if (!found_dot)
+ return false;
+
+ return true;
+}
+
+bool service_name_is_valid(const char *p) {
+ const char *q;
+ bool dot, found_dot = false, unique;
+
+ if (isempty(p))
+ return false;
+
+ unique = p[0] == ':';
+
+ for (dot = true, q = unique ? p+1 : p; *q; q++)
+ if (*q == '.') {
+ if (dot)
+ return false;
+
+ found_dot = dot = true;
+ } else {
+ bool good;
+
+ good =
+ (*q >= 'a' && *q <= 'z') ||
+ (*q >= 'A' && *q <= 'Z') ||
+ ((!dot || unique) && *q >= '0' && *q <= '9') ||
+ *q == '_' || *q == '-';
+
+ if (!good)
+ return false;
+
+ dot = false;
+ }
+
+ if (q - p > 255)
+ return false;
+
+ if (dot)
+ return false;
+
+ if (!found_dot)
+ return false;
+
+ return true;
+}
+
+char* service_name_startswith(const char *a, const char *b) {
+ const char *p;
+
+ if (!service_name_is_valid(a) ||
+ !service_name_is_valid(b))
+ return NULL;
+
+ p = startswith(a, b);
+ if (!p)
+ return NULL;
+
+ if (*p == 0)
+ return (char*) p;
+
+ if (*p == '.')
+ return (char*) p + 1;
+
+ return NULL;
+}
+
+bool member_name_is_valid(const char *p) {
+ const char *q;
+
+ if (isempty(p))
+ return false;
+
+ for (q = p; *q; q++) {
+ bool good;
+
+ good =
+ (*q >= 'a' && *q <= 'z') ||
+ (*q >= 'A' && *q <= 'Z') ||
+ (*q >= '0' && *q <= '9') ||
+ *q == '_';
+
+ if (!good)
+ return false;
+ }
+
+ if (q - p > 255)
+ return false;
+
+ return true;
+}
+
+/*
+ * Complex pattern match
+ * This checks whether @a is a 'complex-prefix' of @b, or @b is a
+ * 'complex-prefix' of @a, based on strings that consist of labels with @c as
+ * spearator. This function returns true if:
+ * - both strings are equal
+ * - either is a prefix of the other and ends with @c
+ * The second rule makes sure that either string needs to be fully included in
+ * the other, and the string which is considered the prefix needs to end with a
+ * separator.
+ */
+static bool complex_pattern_check(char c, const char *a, const char *b) {
+ bool separator = false;
+
+ if (!a && !b)
+ return true;
+
+ if (!a || !b)
+ return false;
+
+ for (;;) {
+ if (*a != *b)
+ return (separator && (*a == 0 || *b == 0));
+
+ if (*a == 0)
+ return true;
+
+ separator = *a == c;
+
+ a++, b++;
+ }
+}
+
+bool namespace_complex_pattern(const char *pattern, const char *value) {
+ return complex_pattern_check('.', pattern, value);
+}
+
+bool path_complex_pattern(const char *pattern, const char *value) {
+ return complex_pattern_check('/', pattern, value);
+}
+
+/*
+ * Simple pattern match
+ * This checks whether @a is a 'simple-prefix' of @b, based on strings that
+ * consist of labels with @c as separator. This function returns true, if:
+ * - if @a and @b are equal
+ * - if @a is a prefix of @b, and the first following character in @b (or the
+ * last character in @a) is @c
+ * The second rule basically makes sure that if @a is a prefix of @b, then @b
+ * must follow with a new label separated by @c. It cannot extend the label.
+ */
+static bool simple_pattern_check(char c, const char *a, const char *b) {
+ bool separator = false;
+
+ if (!a && !b)
+ return true;
+
+ if (!a || !b)
+ return false;
+
+ for (;;) {
+ if (*a != *b)
+ return *a == 0 && (*b == c || separator);
+
+ if (*a == 0)
+ return true;
+
+ separator = *a == c;
+
+ a++, b++;
+ }
+}
+
+bool namespace_simple_pattern(const char *pattern, const char *value) {
+ return simple_pattern_check('.', pattern, value);
+}
+
+bool path_simple_pattern(const char *pattern, const char *value) {
+ return simple_pattern_check('/', pattern, value);
+}
+
+int bus_message_type_from_string(const char *s, uint8_t *u) {
+ if (streq(s, "signal"))
+ *u = SD_BUS_MESSAGE_SIGNAL;
+ else if (streq(s, "method_call"))
+ *u = SD_BUS_MESSAGE_METHOD_CALL;
+ else if (streq(s, "error"))
+ *u = SD_BUS_MESSAGE_METHOD_ERROR;
+ else if (streq(s, "method_return"))
+ *u = SD_BUS_MESSAGE_METHOD_RETURN;
+ else
+ return -EINVAL;
+
+ return 0;
+}
+
+const char *bus_message_type_to_string(uint8_t u) {
+ if (u == SD_BUS_MESSAGE_SIGNAL)
+ return "signal";
+ else if (u == SD_BUS_MESSAGE_METHOD_CALL)
+ return "method_call";
+ else if (u == SD_BUS_MESSAGE_METHOD_ERROR)
+ return "error";
+ else if (u == SD_BUS_MESSAGE_METHOD_RETURN)
+ return "method_return";
+ else
+ return NULL;
+}
+
+char *bus_address_escape(const char *v) {
+ const char *a;
+ char *r, *b;
+
+ r = new(char, strlen(v)*3+1);
+ if (!r)
+ return NULL;
+
+ for (a = v, b = r; *a; a++) {
+
+ if ((*a >= '0' && *a <= '9') ||
+ (*a >= 'a' && *a <= 'z') ||
+ (*a >= 'A' && *a <= 'Z') ||
+ strchr("_-/.", *a))
+ *(b++) = *a;
+ else {
+ *(b++) = '%';
+ *(b++) = hexchar(*a >> 4);
+ *(b++) = hexchar(*a & 0xF);
+ }
+ }
+
+ *b = 0;
+ return r;
+}
+
+int bus_maybe_reply_error(sd_bus_message *m, int r, sd_bus_error *error) {
+ assert(m);
+
+ if (r < 0) {
+ if (m->header->type == SD_BUS_MESSAGE_METHOD_CALL)
+ sd_bus_reply_method_errno(m, r, error);
+
+ } else if (sd_bus_error_is_set(error)) {
+ if (m->header->type == SD_BUS_MESSAGE_METHOD_CALL)
+ sd_bus_reply_method_error(m, error);
+ } else
+ return r;
+
+ log_debug("Failed to process message [type=%s sender=%s path=%s interface=%s member=%s signature=%s]: %s",
+ bus_message_type_to_string(m->header->type),
+ strna(m->sender),
+ strna(m->path),
+ strna(m->interface),
+ strna(m->member),
+ strna(m->root_container.signature),
+ bus_error_message(error, r));
+
+ return 1;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-internal.h b/src/libsystemd/libsystemd-internal/sd-bus/bus-internal.h
new file mode 100644
index 0000000000..8c4c6fa772
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-internal.h
@@ -0,0 +1,399 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <pthread.h>
+#include <sys/socket.h>
+
+#include <systemd/sd-bus.h>
+
+#include "bus-error.h"
+#include "bus-kernel.h"
+#include "bus-match.h"
+#include "hashmap.h"
+#include "kdbus.h"
+#include "list.h"
+#include "prioq.h"
+#include "refcnt.h"
+#include "socket-util.h"
+#include "util.h"
+
+struct reply_callback {
+ sd_bus_message_handler_t callback;
+ usec_t timeout;
+ uint64_t cookie;
+ unsigned prioq_idx;
+};
+
+struct filter_callback {
+ sd_bus_message_handler_t callback;
+
+ unsigned last_iteration;
+
+ LIST_FIELDS(struct filter_callback, callbacks);
+};
+
+struct match_callback {
+ sd_bus_message_handler_t callback;
+
+ uint64_t cookie;
+ unsigned last_iteration;
+
+ char *match_string;
+
+ struct bus_match_node *match_node;
+};
+
+struct node {
+ char *path;
+ struct node *parent;
+ LIST_HEAD(struct node, child);
+ LIST_FIELDS(struct node, siblings);
+
+ LIST_HEAD(struct node_callback, callbacks);
+ LIST_HEAD(struct node_vtable, vtables);
+ LIST_HEAD(struct node_enumerator, enumerators);
+ LIST_HEAD(struct node_object_manager, object_managers);
+};
+
+struct node_callback {
+ struct node *node;
+
+ bool is_fallback;
+ sd_bus_message_handler_t callback;
+
+ unsigned last_iteration;
+
+ LIST_FIELDS(struct node_callback, callbacks);
+};
+
+struct node_enumerator {
+ struct node *node;
+
+ sd_bus_node_enumerator_t callback;
+
+ unsigned last_iteration;
+
+ LIST_FIELDS(struct node_enumerator, enumerators);
+};
+
+struct node_object_manager {
+ struct node *node;
+
+ LIST_FIELDS(struct node_object_manager, object_managers);
+};
+
+struct node_vtable {
+ struct node *node;
+
+ char *interface;
+ bool is_fallback;
+ const sd_bus_vtable *vtable;
+ sd_bus_object_find_t find;
+
+ unsigned last_iteration;
+
+ LIST_FIELDS(struct node_vtable, vtables);
+};
+
+struct vtable_member {
+ const char *path;
+ const char *interface;
+ const char *member;
+ struct node_vtable *parent;
+ unsigned last_iteration;
+ const sd_bus_vtable *vtable;
+};
+
+typedef enum BusSlotType {
+ BUS_REPLY_CALLBACK,
+ BUS_FILTER_CALLBACK,
+ BUS_MATCH_CALLBACK,
+ BUS_NODE_CALLBACK,
+ BUS_NODE_ENUMERATOR,
+ BUS_NODE_VTABLE,
+ BUS_NODE_OBJECT_MANAGER,
+ _BUS_SLOT_INVALID = -1,
+} BusSlotType;
+
+struct sd_bus_slot {
+ unsigned n_ref;
+ sd_bus *bus;
+ void *userdata;
+ BusSlotType type:5;
+ bool floating:1;
+ bool match_added:1;
+ char *description;
+
+ LIST_FIELDS(sd_bus_slot, slots);
+
+ union {
+ struct reply_callback reply_callback;
+ struct filter_callback filter_callback;
+ struct match_callback match_callback;
+ struct node_callback node_callback;
+ struct node_enumerator node_enumerator;
+ struct node_object_manager node_object_manager;
+ struct node_vtable node_vtable;
+ };
+};
+
+enum bus_state {
+ BUS_UNSET,
+ BUS_OPENING,
+ BUS_AUTHENTICATING,
+ BUS_HELLO,
+ BUS_RUNNING,
+ BUS_CLOSING,
+ BUS_CLOSED
+};
+
+static inline bool BUS_IS_OPEN(enum bus_state state) {
+ return state > BUS_UNSET && state < BUS_CLOSING;
+}
+
+enum bus_auth {
+ _BUS_AUTH_INVALID,
+ BUS_AUTH_EXTERNAL,
+ BUS_AUTH_ANONYMOUS
+};
+
+struct sd_bus {
+ /* We use atomic ref counting here since sd_bus_message
+ objects retain references to their originating sd_bus but
+ we want to allow them to be processed in a different
+ thread. We won't provide full thread safety, but only the
+ bare minimum that makes it possible to use sd_bus and
+ sd_bus_message objects independently and on different
+ threads as long as each object is used only once at the
+ same time. */
+ RefCount n_ref;
+
+ enum bus_state state;
+ int input_fd, output_fd;
+ int message_version;
+ int message_endian;
+
+ bool is_kernel:1;
+ bool can_fds:1;
+ bool bus_client:1;
+ bool ucred_valid:1;
+ bool is_server:1;
+ bool anonymous_auth:1;
+ bool prefer_readv:1;
+ bool prefer_writev:1;
+ bool match_callbacks_modified:1;
+ bool filter_callbacks_modified:1;
+ bool nodes_modified:1;
+ bool trusted:1;
+ bool fake_creds_valid:1;
+ bool fake_pids_valid:1;
+ bool manual_peer_interface:1;
+ bool is_system:1;
+ bool is_user:1;
+ bool allow_interactive_authorization:1;
+
+ int use_memfd;
+
+ void *rbuffer;
+ size_t rbuffer_size;
+
+ sd_bus_message **rqueue;
+ unsigned rqueue_size;
+ size_t rqueue_allocated;
+
+ sd_bus_message **wqueue;
+ unsigned wqueue_size;
+ size_t windex;
+ size_t wqueue_allocated;
+
+ uint64_t cookie;
+
+ char *unique_name;
+ uint64_t unique_id;
+
+ struct bus_match_node match_callbacks;
+ Prioq *reply_callbacks_prioq;
+ OrderedHashmap *reply_callbacks;
+ LIST_HEAD(struct filter_callback, filter_callbacks);
+
+ Hashmap *nodes;
+ Hashmap *vtable_methods;
+ Hashmap *vtable_properties;
+
+ union sockaddr_union sockaddr;
+ socklen_t sockaddr_size;
+
+ char *kernel;
+ char *machine;
+ pid_t nspid;
+
+ sd_id128_t server_id;
+
+ char *address;
+ unsigned address_index;
+
+ int last_connect_error;
+
+ enum bus_auth auth;
+ size_t auth_rbegin;
+ struct iovec auth_iovec[3];
+ unsigned auth_index;
+ char *auth_buffer;
+ usec_t auth_timeout;
+
+ struct ucred ucred;
+ char *label;
+
+ uint64_t creds_mask;
+
+ int *fds;
+ unsigned n_fds;
+
+ char *exec_path;
+ char **exec_argv;
+
+ unsigned iteration_counter;
+
+ void *kdbus_buffer;
+
+ /* We do locking around the memfd cache, since we want to
+ * allow people to process a sd_bus_message in a different
+ * thread then it was generated on and free it there. Since
+ * adding something to the memfd cache might happen when a
+ * message is released, we hence need to protect this bit with
+ * a mutex. */
+ pthread_mutex_t memfd_cache_mutex;
+ struct memfd_cache memfd_cache[MEMFD_CACHE_MAX];
+ unsigned n_memfd_cache;
+
+ pid_t original_pid;
+
+ uint64_t hello_flags;
+ uint64_t attach_flags;
+
+ uint64_t match_cookie;
+
+ sd_event_source *input_io_event_source;
+ sd_event_source *output_io_event_source;
+ sd_event_source *time_event_source;
+ sd_event_source *quit_event_source;
+ sd_event *event;
+ int event_priority;
+
+ sd_bus_message *current_message;
+ sd_bus_slot *current_slot;
+ sd_bus_message_handler_t current_handler;
+ void *current_userdata;
+
+ sd_bus **default_bus_ptr;
+ pid_t tid;
+
+ struct kdbus_creds fake_creds;
+ struct kdbus_pids fake_pids;
+ char *fake_label;
+
+ char *cgroup_root;
+
+ char *description;
+
+ size_t bloom_size;
+ unsigned bloom_n_hash;
+
+ sd_bus_track *track_queue;
+
+ LIST_HEAD(sd_bus_slot, slots);
+};
+
+#define BUS_DEFAULT_TIMEOUT ((usec_t) (25 * USEC_PER_SEC))
+
+#define BUS_WQUEUE_MAX 1024
+#define BUS_RQUEUE_MAX 64*1024
+
+#define BUS_MESSAGE_SIZE_MAX (64*1024*1024)
+#define BUS_AUTH_SIZE_MAX (64*1024)
+
+#define BUS_CONTAINER_DEPTH 128
+
+/* Defined by the specification as maximum size of an array in
+ * bytes */
+#define BUS_ARRAY_MAX_SIZE 67108864
+
+#define BUS_FDS_MAX 1024
+
+#define BUS_EXEC_ARGV_MAX 256
+
+bool interface_name_is_valid(const char *p) _pure_;
+bool service_name_is_valid(const char *p) _pure_;
+char* service_name_startswith(const char *a, const char *b);
+bool member_name_is_valid(const char *p) _pure_;
+bool object_path_is_valid(const char *p) _pure_;
+char *object_path_startswith(const char *a, const char *b) _pure_;
+
+bool namespace_complex_pattern(const char *pattern, const char *value) _pure_;
+bool path_complex_pattern(const char *pattern, const char *value) _pure_;
+
+bool namespace_simple_pattern(const char *pattern, const char *value) _pure_;
+bool path_simple_pattern(const char *pattern, const char *value) _pure_;
+
+int bus_message_type_from_string(const char *s, uint8_t *u) _pure_;
+const char *bus_message_type_to_string(uint8_t u) _pure_;
+
+#define error_name_is_valid interface_name_is_valid
+
+int bus_ensure_running(sd_bus *bus);
+int bus_start_running(sd_bus *bus);
+int bus_next_address(sd_bus *bus);
+
+int bus_seal_synthetic_message(sd_bus *b, sd_bus_message *m);
+
+int bus_rqueue_make_room(sd_bus *bus);
+
+bool bus_pid_changed(sd_bus *bus);
+
+char *bus_address_escape(const char *v);
+
+#define OBJECT_PATH_FOREACH_PREFIX(prefix, path) \
+ for (char *_slash = ({ strcpy((prefix), (path)); streq((prefix), "/") ? NULL : strrchr((prefix), '/'); }) ; \
+ _slash && !(_slash[(_slash) == (prefix)] = 0); \
+ _slash = streq((prefix), "/") ? NULL : strrchr((prefix), '/'))
+
+/* If we are invoking callbacks of a bus object, ensure unreffing the
+ * bus from the callback doesn't destroy the object we are working
+ * on */
+#define BUS_DONT_DESTROY(bus) \
+ _cleanup_(sd_bus_unrefp) _unused_ sd_bus *_dont_destroy_##bus = sd_bus_ref(bus)
+
+int bus_set_address_system(sd_bus *bus);
+int bus_set_address_user(sd_bus *bus);
+int bus_set_address_system_remote(sd_bus *b, const char *host);
+int bus_set_address_system_machine(sd_bus *b, const char *machine);
+
+int bus_remove_match_by_string(sd_bus *bus, const char *match, sd_bus_message_handler_t callback, void *userdata);
+
+int bus_get_root_path(sd_bus *bus);
+
+int bus_maybe_reply_error(sd_bus_message *m, int r, sd_bus_error *error);
+
+#define bus_assert_return(expr, r, error) \
+ do { \
+ if (!assert_log(expr, #expr)) \
+ return sd_bus_error_set_errno(error, r); \
+ } while (false)
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-introspect.c b/src/libsystemd/libsystemd-internal/sd-bus/bus-introspect.c
new file mode 100644
index 0000000000..8f93edb8da
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-introspect.c
@@ -0,0 +1,212 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "bus-internal.h"
+#include "bus-introspect.h"
+#include "bus-protocol.h"
+#include "bus-signature.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "string-util.h"
+#include "util.h"
+
+int introspect_begin(struct introspect *i, bool trusted) {
+ assert(i);
+
+ zero(*i);
+ i->trusted = trusted;
+
+ i->f = open_memstream(&i->introspection, &i->size);
+ if (!i->f)
+ return -ENOMEM;
+
+ fputs(BUS_INTROSPECT_DOCTYPE
+ "<node>\n", i->f);
+
+ return 0;
+}
+
+int introspect_write_default_interfaces(struct introspect *i, bool object_manager) {
+ assert(i);
+
+ fputs(BUS_INTROSPECT_INTERFACE_PEER
+ BUS_INTROSPECT_INTERFACE_INTROSPECTABLE
+ BUS_INTROSPECT_INTERFACE_PROPERTIES, i->f);
+
+ if (object_manager)
+ fputs(BUS_INTROSPECT_INTERFACE_OBJECT_MANAGER, i->f);
+
+ return 0;
+}
+
+int introspect_write_child_nodes(struct introspect *i, Set *s, const char *prefix) {
+ char *node;
+
+ assert(i);
+ assert(prefix);
+
+ while ((node = set_steal_first(s))) {
+ const char *e;
+
+ e = object_path_startswith(node, prefix);
+ if (e && e[0])
+ fprintf(i->f, " <node name=\"%s\"/>\n", e);
+
+ free(node);
+ }
+
+ return 0;
+}
+
+static void introspect_write_flags(struct introspect *i, int type, int flags) {
+ if (flags & SD_BUS_VTABLE_DEPRECATED)
+ fputs(" <annotation name=\"org.freedesktop.DBus.Deprecated\" value=\"true\"/>\n", i->f);
+
+ if (type == _SD_BUS_VTABLE_METHOD && (flags & SD_BUS_VTABLE_METHOD_NO_REPLY))
+ fputs(" <annotation name=\"org.freedesktop.DBus.Method.NoReply\" value=\"true\"/>\n", i->f);
+
+ if (type == _SD_BUS_VTABLE_PROPERTY || type == _SD_BUS_VTABLE_WRITABLE_PROPERTY) {
+ if (flags & SD_BUS_VTABLE_PROPERTY_EXPLICIT)
+ fputs(" <annotation name=\"org.freedesktop.systemd1.Explicit\" value=\"true\"/>\n", i->f);
+
+ if (flags & SD_BUS_VTABLE_PROPERTY_CONST)
+ fputs(" <annotation name=\"org.freedesktop.DBus.Property.EmitsChangedSignal\" value=\"const\"/>\n", i->f);
+ else if (flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION)
+ fputs(" <annotation name=\"org.freedesktop.DBus.Property.EmitsChangedSignal\" value=\"invalidates\"/>\n", i->f);
+ else if (!(flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE))
+ fputs(" <annotation name=\"org.freedesktop.DBus.Property.EmitsChangedSignal\" value=\"false\"/>\n", i->f);
+ }
+
+ if (!i->trusted &&
+ (type == _SD_BUS_VTABLE_METHOD || type == _SD_BUS_VTABLE_WRITABLE_PROPERTY) &&
+ !(flags & SD_BUS_VTABLE_UNPRIVILEGED))
+ fputs(" <annotation name=\"org.freedesktop.systemd1.Privileged\" value=\"true\"/>\n", i->f);
+}
+
+static int introspect_write_arguments(struct introspect *i, const char *signature, const char *direction) {
+ int r;
+
+ for (;;) {
+ size_t l;
+
+ if (!*signature)
+ return 0;
+
+ r = signature_element_length(signature, &l);
+ if (r < 0)
+ return r;
+
+ fprintf(i->f, " <arg type=\"%.*s\"", (int) l, signature);
+
+ if (direction)
+ fprintf(i->f, " direction=\"%s\"/>\n", direction);
+ else
+ fputs("/>\n", i->f);
+
+ signature += l;
+ }
+}
+
+int introspect_write_interface(struct introspect *i, const sd_bus_vtable *v) {
+ assert(i);
+ assert(v);
+
+ for (; v->type != _SD_BUS_VTABLE_END; v++) {
+
+ /* Ignore methods, signals and properties that are
+ * marked "hidden", but do show the interface
+ * itself */
+
+ if (v->type != _SD_BUS_VTABLE_START && (v->flags & SD_BUS_VTABLE_HIDDEN))
+ continue;
+
+ switch (v->type) {
+
+ case _SD_BUS_VTABLE_START:
+ if (v->flags & SD_BUS_VTABLE_DEPRECATED)
+ fputs(" <annotation name=\"org.freedesktop.DBus.Deprecated\" value=\"true\"/>\n", i->f);
+ break;
+
+ case _SD_BUS_VTABLE_METHOD:
+ fprintf(i->f, " <method name=\"%s\">\n", v->x.method.member);
+ introspect_write_arguments(i, strempty(v->x.method.signature), "in");
+ introspect_write_arguments(i, strempty(v->x.method.result), "out");
+ introspect_write_flags(i, v->type, v->flags);
+ fputs(" </method>\n", i->f);
+ break;
+
+ case _SD_BUS_VTABLE_PROPERTY:
+ case _SD_BUS_VTABLE_WRITABLE_PROPERTY:
+ fprintf(i->f, " <property name=\"%s\" type=\"%s\" access=\"%s\">\n",
+ v->x.property.member,
+ v->x.property.signature,
+ v->type == _SD_BUS_VTABLE_WRITABLE_PROPERTY ? "readwrite" : "read");
+ introspect_write_flags(i, v->type, v->flags);
+ fputs(" </property>\n", i->f);
+ break;
+
+ case _SD_BUS_VTABLE_SIGNAL:
+ fprintf(i->f, " <signal name=\"%s\">\n", v->x.signal.member);
+ introspect_write_arguments(i, strempty(v->x.signal.signature), NULL);
+ introspect_write_flags(i, v->type, v->flags);
+ fputs(" </signal>\n", i->f);
+ break;
+ }
+
+ }
+
+ return 0;
+}
+
+int introspect_finish(struct introspect *i, sd_bus *bus, sd_bus_message *m, sd_bus_message **reply) {
+ sd_bus_message *q;
+ int r;
+
+ assert(i);
+ assert(m);
+ assert(reply);
+
+ fputs("</node>\n", i->f);
+
+ r = fflush_and_check(i->f);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_new_method_return(m, &q);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append(q, "s", i->introspection);
+ if (r < 0) {
+ sd_bus_message_unref(q);
+ return r;
+ }
+
+ *reply = q;
+ return 0;
+}
+
+void introspect_free(struct introspect *i) {
+ assert(i);
+
+ safe_fclose(i->f);
+
+ free(i->introspection);
+ zero(*i);
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-introspect.h b/src/libsystemd/libsystemd-internal/sd-bus/bus-introspect.h
new file mode 100644
index 0000000000..87ac03b26a
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-introspect.h
@@ -0,0 +1,40 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <stdio.h>
+
+#include <systemd/sd-bus.h>
+
+#include "set.h"
+
+struct introspect {
+ FILE *f;
+ char *introspection;
+ size_t size;
+ bool trusted;
+};
+
+int introspect_begin(struct introspect *i, bool trusted);
+int introspect_write_default_interfaces(struct introspect *i, bool object_manager);
+int introspect_write_child_nodes(struct introspect *i, Set *s, const char *prefix);
+int introspect_write_interface(struct introspect *i, const sd_bus_vtable *v);
+int introspect_finish(struct introspect *i, sd_bus *bus, sd_bus_message *m, sd_bus_message **reply);
+void introspect_free(struct introspect *i);
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-kernel.c b/src/libsystemd/libsystemd-internal/sd-bus/bus-kernel.c
new file mode 100644
index 0000000000..59398b841d
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-kernel.c
@@ -0,0 +1,1782 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#ifdef HAVE_VALGRIND_MEMCHECK_H
+#include <valgrind/memcheck.h>
+#endif
+
+#include <fcntl.h>
+#include <malloc.h>
+#include <sys/mman.h>
+#include <sys/prctl.h>
+
+/* When we include libgen.h because we need dirname() we immediately
+ * undefine basename() since libgen.h defines it as a macro to the POSIX
+ * version which is really broken. We prefer GNU basename(). */
+#include <libgen.h>
+#undef basename
+
+#include "alloc-util.h"
+#include "bus-bloom.h"
+#include "bus-internal.h"
+#include "bus-kernel.h"
+#include "bus-label.h"
+#include "bus-message.h"
+#include "bus-util.h"
+#include "capability-util.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "formats-util.h"
+#include "memfd-util.h"
+#include "parse-util.h"
+#include "stdio-util.h"
+#include "string-util.h"
+#include "strv.h"
+#include "user-util.h"
+#include "util.h"
+
+#define UNIQUE_NAME_MAX (3+DECIMAL_STR_MAX(uint64_t))
+
+int bus_kernel_parse_unique_name(const char *s, uint64_t *id) {
+ int r;
+
+ assert(s);
+ assert(id);
+
+ if (!startswith(s, ":1."))
+ return 0;
+
+ r = safe_atou64(s + 3, id);
+ if (r < 0)
+ return r;
+
+ return 1;
+}
+
+static void append_payload_vec(struct kdbus_item **d, const void *p, size_t sz) {
+ assert(d);
+ assert(sz > 0);
+
+ *d = ALIGN8_PTR(*d);
+
+ /* Note that p can be NULL, which encodes a region full of
+ * zeroes, which is useful to optimize certain padding
+ * conditions */
+
+ (*d)->size = offsetof(struct kdbus_item, vec) + sizeof(struct kdbus_vec);
+ (*d)->type = KDBUS_ITEM_PAYLOAD_VEC;
+ (*d)->vec.address = PTR_TO_UINT64(p);
+ (*d)->vec.size = sz;
+
+ *d = (struct kdbus_item *) ((uint8_t*) *d + (*d)->size);
+}
+
+static void append_payload_memfd(struct kdbus_item **d, int memfd, size_t start, size_t sz) {
+ assert(d);
+ assert(memfd >= 0);
+ assert(sz > 0);
+
+ *d = ALIGN8_PTR(*d);
+ (*d)->size = offsetof(struct kdbus_item, memfd) + sizeof(struct kdbus_memfd);
+ (*d)->type = KDBUS_ITEM_PAYLOAD_MEMFD;
+ (*d)->memfd.fd = memfd;
+ (*d)->memfd.start = start;
+ (*d)->memfd.size = sz;
+
+ *d = (struct kdbus_item *) ((uint8_t*) *d + (*d)->size);
+}
+
+static void append_destination(struct kdbus_item **d, const char *s, size_t length) {
+ assert(d);
+ assert(s);
+
+ *d = ALIGN8_PTR(*d);
+
+ (*d)->size = offsetof(struct kdbus_item, str) + length + 1;
+ (*d)->type = KDBUS_ITEM_DST_NAME;
+ memcpy((*d)->str, s, length + 1);
+
+ *d = (struct kdbus_item *) ((uint8_t*) *d + (*d)->size);
+}
+
+static struct kdbus_bloom_filter *append_bloom(struct kdbus_item **d, size_t length) {
+ struct kdbus_item *i;
+
+ assert(d);
+
+ i = ALIGN8_PTR(*d);
+
+ i->size = offsetof(struct kdbus_item, bloom_filter) +
+ offsetof(struct kdbus_bloom_filter, data) +
+ length;
+ i->type = KDBUS_ITEM_BLOOM_FILTER;
+
+ *d = (struct kdbus_item *) ((uint8_t*) i + i->size);
+
+ return &i->bloom_filter;
+}
+
+static void append_fds(struct kdbus_item **d, const int fds[], unsigned n_fds) {
+ assert(d);
+ assert(fds);
+ assert(n_fds > 0);
+
+ *d = ALIGN8_PTR(*d);
+ (*d)->size = offsetof(struct kdbus_item, fds) + sizeof(int) * n_fds;
+ (*d)->type = KDBUS_ITEM_FDS;
+ memcpy((*d)->fds, fds, sizeof(int) * n_fds);
+
+ *d = (struct kdbus_item *) ((uint8_t*) *d + (*d)->size);
+}
+
+static void add_bloom_arg(void *data, size_t size, unsigned n_hash, unsigned i, const char *t) {
+ char buf[sizeof("arg")-1 + 2 + sizeof("-slash-prefix")];
+ char *e;
+
+ assert(data);
+ assert(size > 0);
+ assert(i < 64);
+ assert(t);
+
+ e = stpcpy(buf, "arg");
+ if (i < 10)
+ *(e++) = '0' + (char) i;
+ else {
+ *(e++) = '0' + (char) (i / 10);
+ *(e++) = '0' + (char) (i % 10);
+ }
+
+ *e = 0;
+ bloom_add_pair(data, size, n_hash, buf, t);
+
+ strcpy(e, "-dot-prefix");
+ bloom_add_prefixes(data, size, n_hash, buf, t, '.');
+ strcpy(e, "-slash-prefix");
+ bloom_add_prefixes(data, size, n_hash, buf, t, '/');
+}
+
+static void add_bloom_arg_has(void *data, size_t size, unsigned n_hash, unsigned i, const char *t) {
+ char buf[sizeof("arg")-1 + 2 + sizeof("-has")];
+ char *e;
+
+ assert(data);
+ assert(size > 0);
+ assert(i < 64);
+ assert(t);
+
+ e = stpcpy(buf, "arg");
+ if (i < 10)
+ *(e++) = '0' + (char) i;
+ else {
+ *(e++) = '0' + (char) (i / 10);
+ *(e++) = '0' + (char) (i % 10);
+ }
+
+ strcpy(e, "-has");
+ bloom_add_pair(data, size, n_hash, buf, t);
+}
+
+static int bus_message_setup_bloom(sd_bus_message *m, struct kdbus_bloom_filter *bloom) {
+ void *data;
+ unsigned i;
+ int r;
+
+ assert(m);
+ assert(bloom);
+
+ data = bloom->data;
+ memzero(data, m->bus->bloom_size);
+ bloom->generation = 0;
+
+ bloom_add_pair(data, m->bus->bloom_size, m->bus->bloom_n_hash, "message-type", bus_message_type_to_string(m->header->type));
+
+ if (m->interface)
+ bloom_add_pair(data, m->bus->bloom_size, m->bus->bloom_n_hash, "interface", m->interface);
+ if (m->member)
+ bloom_add_pair(data, m->bus->bloom_size, m->bus->bloom_n_hash, "member", m->member);
+ if (m->path) {
+ bloom_add_pair(data, m->bus->bloom_size, m->bus->bloom_n_hash, "path", m->path);
+ bloom_add_pair(data, m->bus->bloom_size, m->bus->bloom_n_hash, "path-slash-prefix", m->path);
+ bloom_add_prefixes(data, m->bus->bloom_size, m->bus->bloom_n_hash, "path-slash-prefix", m->path, '/');
+ }
+
+ r = sd_bus_message_rewind(m, true);
+ if (r < 0)
+ return r;
+
+ for (i = 0; i < 64; i++) {
+ const char *t, *contents;
+ char type;
+
+ r = sd_bus_message_peek_type(m, &type, &contents);
+ if (r < 0)
+ return r;
+
+ if (IN_SET(type, SD_BUS_TYPE_STRING, SD_BUS_TYPE_OBJECT_PATH, SD_BUS_TYPE_SIGNATURE)) {
+
+ /* The bloom filter includes simple strings of any kind */
+ r = sd_bus_message_read_basic(m, type, &t);
+ if (r < 0)
+ return r;
+
+ add_bloom_arg(data, m->bus->bloom_size, m->bus->bloom_n_hash, i, t);
+ }
+
+ if (type == SD_BUS_TYPE_ARRAY && STR_IN_SET(contents, "s", "o", "g")) {
+
+ /* As well as array of simple strings of any kinds */
+ r = sd_bus_message_enter_container(m, type, contents);
+ if (r < 0)
+ return r;
+
+ while ((r = sd_bus_message_read_basic(m, contents[0], &t)) > 0)
+ add_bloom_arg_has(data, m->bus->bloom_size, m->bus->bloom_n_hash, i, t);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_exit_container(m);
+ if (r < 0)
+ return r;
+
+ } else
+ /* Stop adding to bloom filter as soon as we
+ * run into the first argument we cannot add
+ * to it. */
+ break;
+ }
+
+ return 0;
+}
+
+static int bus_message_setup_kmsg(sd_bus *b, sd_bus_message *m) {
+ struct bus_body_part *part;
+ struct kdbus_item *d;
+ const char *destination;
+ bool well_known = false;
+ uint64_t dst_id;
+ size_t sz, dl;
+ unsigned i;
+ int r;
+
+ assert(b);
+ assert(m);
+ assert(m->sealed);
+
+ /* We put this together only once, if this message is reused
+ * we reuse the earlier-built version */
+ if (m->kdbus)
+ return 0;
+
+ destination = m->destination ?: m->destination_ptr;
+
+ if (destination) {
+ r = bus_kernel_parse_unique_name(destination, &dst_id);
+ if (r < 0)
+ return r;
+ if (r == 0) {
+ well_known = true;
+
+ /* verify_destination_id will usually be 0, which makes the kernel
+ * driver only look at the provided well-known name. Otherwise,
+ * the kernel will make sure the provided destination id matches
+ * the owner of the provided well-known-name, and fail if they
+ * differ. Currently, this is only needed for bus-proxyd. */
+ dst_id = m->verify_destination_id;
+ }
+ } else
+ dst_id = KDBUS_DST_ID_BROADCAST;
+
+ sz = offsetof(struct kdbus_msg, items);
+
+ /* Add in fixed header, fields header and payload */
+ sz += (1 + m->n_body_parts) * ALIGN8(offsetof(struct kdbus_item, vec) +
+ MAX(sizeof(struct kdbus_vec),
+ sizeof(struct kdbus_memfd)));
+
+ /* Add space for bloom filter */
+ sz += ALIGN8(offsetof(struct kdbus_item, bloom_filter) +
+ offsetof(struct kdbus_bloom_filter, data) +
+ m->bus->bloom_size);
+
+ /* Add in well-known destination header */
+ if (well_known) {
+ dl = strlen(destination);
+ sz += ALIGN8(offsetof(struct kdbus_item, str) + dl + 1);
+ }
+
+ /* Add space for unix fds */
+ if (m->n_fds > 0)
+ sz += ALIGN8(offsetof(struct kdbus_item, fds) + sizeof(int)*m->n_fds);
+
+ m->kdbus = memalign(8, sz);
+ if (!m->kdbus) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ m->free_kdbus = true;
+ memzero(m->kdbus, sz);
+
+ m->kdbus->flags =
+ ((m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED) ? 0 : KDBUS_MSG_EXPECT_REPLY) |
+ ((m->header->flags & BUS_MESSAGE_NO_AUTO_START) ? KDBUS_MSG_NO_AUTO_START : 0) |
+ ((m->header->type == SD_BUS_MESSAGE_SIGNAL) ? KDBUS_MSG_SIGNAL : 0);
+
+ m->kdbus->dst_id = dst_id;
+ m->kdbus->payload_type = KDBUS_PAYLOAD_DBUS;
+ m->kdbus->cookie = m->header->dbus2.cookie;
+ m->kdbus->priority = m->priority;
+
+ if (m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED)
+ m->kdbus->cookie_reply = m->reply_cookie;
+ else {
+ struct timespec now;
+
+ assert_se(clock_gettime(CLOCK_MONOTONIC_COARSE, &now) == 0);
+ m->kdbus->timeout_ns = now.tv_sec * NSEC_PER_SEC + now.tv_nsec +
+ m->timeout * NSEC_PER_USEC;
+ }
+
+ d = m->kdbus->items;
+
+ if (well_known)
+ append_destination(&d, destination, dl);
+
+ append_payload_vec(&d, m->header, BUS_MESSAGE_BODY_BEGIN(m));
+
+ MESSAGE_FOREACH_PART(part, i, m) {
+ if (part->is_zero) {
+ /* If this is padding then simply send a
+ * vector with a NULL data pointer which the
+ * kernel will just pass through. This is the
+ * most efficient way to encode zeroes */
+
+ append_payload_vec(&d, NULL, part->size);
+ continue;
+ }
+
+ if (part->memfd >= 0 && part->sealed && destination) {
+ /* Try to send a memfd, if the part is
+ * sealed and this is not a broadcast. Since we can only */
+
+ append_payload_memfd(&d, part->memfd, part->memfd_offset, part->size);
+ continue;
+ }
+
+ /* Otherwise, let's send a vector to the actual data.
+ * For that, we need to map it first. */
+ r = bus_body_part_map(part);
+ if (r < 0)
+ goto fail;
+
+ append_payload_vec(&d, part->data, part->size);
+ }
+
+ if (m->header->type == SD_BUS_MESSAGE_SIGNAL) {
+ struct kdbus_bloom_filter *bloom;
+
+ bloom = append_bloom(&d, m->bus->bloom_size);
+ r = bus_message_setup_bloom(m, bloom);
+ if (r < 0)
+ goto fail;
+ }
+
+ if (m->n_fds > 0)
+ append_fds(&d, m->fds, m->n_fds);
+
+ m->kdbus->size = (uint8_t*) d - (uint8_t*) m->kdbus;
+ assert(m->kdbus->size <= sz);
+
+ return 0;
+
+fail:
+ m->poisoned = true;
+ return r;
+}
+
+static void unset_memfds(struct sd_bus_message *m) {
+ struct bus_body_part *part;
+ unsigned i;
+
+ assert(m);
+
+ /* Make sure the memfds are not freed twice */
+ MESSAGE_FOREACH_PART(part, i, m)
+ if (part->memfd >= 0)
+ part->memfd = -1;
+}
+
+static void message_set_timestamp(sd_bus *bus, sd_bus_message *m, const struct kdbus_timestamp *ts) {
+ assert(bus);
+ assert(m);
+
+ if (!ts)
+ return;
+
+ if (!(bus->attach_flags & KDBUS_ATTACH_TIMESTAMP))
+ return;
+
+ m->realtime = ts->realtime_ns / NSEC_PER_USEC;
+ m->monotonic = ts->monotonic_ns / NSEC_PER_USEC;
+ m->seqnum = ts->seqnum;
+}
+
+static int bus_kernel_make_message(sd_bus *bus, struct kdbus_msg *k) {
+ sd_bus_message *m = NULL;
+ struct kdbus_item *d;
+ unsigned n_fds = 0;
+ _cleanup_free_ int *fds = NULL;
+ struct bus_header *header = NULL;
+ void *footer = NULL;
+ size_t header_size = 0, footer_size = 0;
+ size_t n_bytes = 0, idx = 0;
+ const char *destination = NULL, *seclabel = NULL;
+ bool last_was_memfd = false;
+ int r;
+
+ assert(bus);
+ assert(k);
+ assert(k->payload_type == KDBUS_PAYLOAD_DBUS);
+
+ KDBUS_ITEM_FOREACH(d, k, items) {
+ size_t l;
+
+ l = d->size - offsetof(struct kdbus_item, data);
+
+ switch (d->type) {
+
+ case KDBUS_ITEM_PAYLOAD_OFF:
+ if (!header) {
+ header = (struct bus_header*)((uint8_t*) k + d->vec.offset);
+ header_size = d->vec.size;
+ }
+
+ footer = (uint8_t*) k + d->vec.offset;
+ footer_size = d->vec.size;
+
+ n_bytes += d->vec.size;
+ last_was_memfd = false;
+ break;
+
+ case KDBUS_ITEM_PAYLOAD_MEMFD:
+ if (!header) /* memfd cannot be first part */
+ return -EBADMSG;
+
+ n_bytes += d->memfd.size;
+ last_was_memfd = true;
+ break;
+
+ case KDBUS_ITEM_FDS: {
+ int *f;
+ unsigned j;
+
+ j = l / sizeof(int);
+ f = realloc(fds, sizeof(int) * (n_fds + j));
+ if (!f)
+ return -ENOMEM;
+
+ fds = f;
+ memcpy(fds + n_fds, d->fds, sizeof(int) * j);
+ n_fds += j;
+ break;
+ }
+
+ case KDBUS_ITEM_SECLABEL:
+ seclabel = d->str;
+ break;
+ }
+ }
+
+ if (last_was_memfd) /* memfd cannot be last part */
+ return -EBADMSG;
+
+ if (!header)
+ return -EBADMSG;
+
+ if (header_size < sizeof(struct bus_header))
+ return -EBADMSG;
+
+ /* on kdbus we only speak native endian gvariant, never dbus1
+ * marshalling or reverse endian */
+ if (header->version != 2 ||
+ header->endian != BUS_NATIVE_ENDIAN)
+ return -EPROTOTYPE;
+
+ r = bus_message_from_header(
+ bus,
+ header, header_size,
+ footer, footer_size,
+ n_bytes,
+ fds, n_fds,
+ seclabel, 0, &m);
+ if (r < 0)
+ return r;
+
+ /* The well-known names list is different from the other
+ credentials. If we asked for it, but nothing is there, this
+ means that the list of well-known names is simply empty, not
+ that we lack any data */
+
+ m->creds.mask |= (SD_BUS_CREDS_UNIQUE_NAME|SD_BUS_CREDS_WELL_KNOWN_NAMES) & bus->creds_mask;
+
+ KDBUS_ITEM_FOREACH(d, k, items) {
+ size_t l;
+
+ l = d->size - offsetof(struct kdbus_item, data);
+
+ switch (d->type) {
+
+ case KDBUS_ITEM_PAYLOAD_OFF: {
+ size_t begin_body;
+
+ begin_body = BUS_MESSAGE_BODY_BEGIN(m);
+
+ if (idx + d->vec.size > begin_body) {
+ struct bus_body_part *part;
+
+ /* Contains body material */
+
+ part = message_append_part(m);
+ if (!part) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ /* A -1 offset is NUL padding. */
+ part->is_zero = d->vec.offset == ~0ULL;
+
+ if (idx >= begin_body) {
+ if (!part->is_zero)
+ part->data = (uint8_t* )k + d->vec.offset;
+ part->size = d->vec.size;
+ } else {
+ if (!part->is_zero)
+ part->data = (uint8_t*) k + d->vec.offset + (begin_body - idx);
+ part->size = d->vec.size - (begin_body - idx);
+ }
+
+ part->sealed = true;
+ }
+
+ idx += d->vec.size;
+ break;
+ }
+
+ case KDBUS_ITEM_PAYLOAD_MEMFD: {
+ struct bus_body_part *part;
+
+ if (idx < BUS_MESSAGE_BODY_BEGIN(m)) {
+ r = -EBADMSG;
+ goto fail;
+ }
+
+ part = message_append_part(m);
+ if (!part) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ part->memfd = d->memfd.fd;
+ part->memfd_offset = d->memfd.start;
+ part->size = d->memfd.size;
+ part->sealed = true;
+
+ idx += d->memfd.size;
+ break;
+ }
+
+ case KDBUS_ITEM_PIDS:
+
+ /* The PID/TID might be missing, when the data
+ * is faked by a bus proxy and it lacks that
+ * information about the real client (since
+ * SO_PEERCRED is used for that). Also kernel
+ * namespacing might make some of this data
+ * unavailable when untranslatable. */
+
+ if (d->pids.pid > 0) {
+ m->creds.pid = (pid_t) d->pids.pid;
+ m->creds.mask |= SD_BUS_CREDS_PID & bus->creds_mask;
+ }
+
+ if (d->pids.tid > 0) {
+ m->creds.tid = (pid_t) d->pids.tid;
+ m->creds.mask |= SD_BUS_CREDS_TID & bus->creds_mask;
+ }
+
+ if (d->pids.ppid > 0) {
+ m->creds.ppid = (pid_t) d->pids.ppid;
+ m->creds.mask |= SD_BUS_CREDS_PPID & bus->creds_mask;
+ } else if (d->pids.pid == 1) {
+ m->creds.ppid = 0;
+ m->creds.mask |= SD_BUS_CREDS_PPID & bus->creds_mask;
+ }
+
+ break;
+
+ case KDBUS_ITEM_CREDS:
+
+ /* EUID/SUID/FSUID/EGID/SGID/FSGID might be
+ * missing too (see above). */
+
+ if ((uid_t) d->creds.uid != UID_INVALID) {
+ m->creds.uid = (uid_t) d->creds.uid;
+ m->creds.mask |= SD_BUS_CREDS_UID & bus->creds_mask;
+ }
+
+ if ((uid_t) d->creds.euid != UID_INVALID) {
+ m->creds.euid = (uid_t) d->creds.euid;
+ m->creds.mask |= SD_BUS_CREDS_EUID & bus->creds_mask;
+ }
+
+ if ((uid_t) d->creds.suid != UID_INVALID) {
+ m->creds.suid = (uid_t) d->creds.suid;
+ m->creds.mask |= SD_BUS_CREDS_SUID & bus->creds_mask;
+ }
+
+ if ((uid_t) d->creds.fsuid != UID_INVALID) {
+ m->creds.fsuid = (uid_t) d->creds.fsuid;
+ m->creds.mask |= SD_BUS_CREDS_FSUID & bus->creds_mask;
+ }
+
+ if ((gid_t) d->creds.gid != GID_INVALID) {
+ m->creds.gid = (gid_t) d->creds.gid;
+ m->creds.mask |= SD_BUS_CREDS_GID & bus->creds_mask;
+ }
+
+ if ((gid_t) d->creds.egid != GID_INVALID) {
+ m->creds.egid = (gid_t) d->creds.egid;
+ m->creds.mask |= SD_BUS_CREDS_EGID & bus->creds_mask;
+ }
+
+ if ((gid_t) d->creds.sgid != GID_INVALID) {
+ m->creds.sgid = (gid_t) d->creds.sgid;
+ m->creds.mask |= SD_BUS_CREDS_SGID & bus->creds_mask;
+ }
+
+ if ((gid_t) d->creds.fsgid != GID_INVALID) {
+ m->creds.fsgid = (gid_t) d->creds.fsgid;
+ m->creds.mask |= SD_BUS_CREDS_FSGID & bus->creds_mask;
+ }
+
+ break;
+
+ case KDBUS_ITEM_TIMESTAMP:
+ message_set_timestamp(bus, m, &d->timestamp);
+ break;
+
+ case KDBUS_ITEM_PID_COMM:
+ m->creds.comm = d->str;
+ m->creds.mask |= SD_BUS_CREDS_COMM & bus->creds_mask;
+ break;
+
+ case KDBUS_ITEM_TID_COMM:
+ m->creds.tid_comm = d->str;
+ m->creds.mask |= SD_BUS_CREDS_TID_COMM & bus->creds_mask;
+ break;
+
+ case KDBUS_ITEM_EXE:
+ m->creds.exe = d->str;
+ m->creds.mask |= SD_BUS_CREDS_EXE & bus->creds_mask;
+ break;
+
+ case KDBUS_ITEM_CMDLINE:
+ m->creds.cmdline = d->str;
+ m->creds.cmdline_size = l;
+ m->creds.mask |= SD_BUS_CREDS_CMDLINE & bus->creds_mask;
+ break;
+
+ case KDBUS_ITEM_CGROUP:
+ m->creds.cgroup = d->str;
+ m->creds.mask |= (SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_OWNER_UID) & bus->creds_mask;
+
+ r = bus_get_root_path(bus);
+ if (r < 0)
+ goto fail;
+
+ m->creds.cgroup_root = bus->cgroup_root;
+ break;
+
+ case KDBUS_ITEM_AUDIT:
+ m->creds.audit_session_id = (uint32_t) d->audit.sessionid;
+ m->creds.mask |= SD_BUS_CREDS_AUDIT_SESSION_ID & bus->creds_mask;
+
+ m->creds.audit_login_uid = (uid_t) d->audit.loginuid;
+ m->creds.mask |= SD_BUS_CREDS_AUDIT_LOGIN_UID & bus->creds_mask;
+ break;
+
+ case KDBUS_ITEM_CAPS:
+ if (d->caps.last_cap != cap_last_cap() ||
+ d->size - offsetof(struct kdbus_item, caps.caps) < DIV_ROUND_UP(d->caps.last_cap, 32U) * 4 * 4) {
+ r = -EBADMSG;
+ goto fail;
+ }
+
+ m->creds.capability = d->caps.caps;
+ m->creds.mask |= (SD_BUS_CREDS_EFFECTIVE_CAPS|SD_BUS_CREDS_PERMITTED_CAPS|SD_BUS_CREDS_INHERITABLE_CAPS|SD_BUS_CREDS_BOUNDING_CAPS) & bus->creds_mask;
+ break;
+
+ case KDBUS_ITEM_DST_NAME:
+ if (!service_name_is_valid(d->str)) {
+ r = -EBADMSG;
+ goto fail;
+ }
+
+ destination = d->str;
+ break;
+
+ case KDBUS_ITEM_OWNED_NAME:
+ if (!service_name_is_valid(d->name.name)) {
+ r = -EBADMSG;
+ goto fail;
+ }
+
+ if (bus->creds_mask & SD_BUS_CREDS_WELL_KNOWN_NAMES) {
+ char **wkn;
+ size_t n;
+
+ /* We just extend the array here, but
+ * do not allocate the strings inside
+ * of it, instead we just point to our
+ * buffer directly. */
+ n = strv_length(m->creds.well_known_names);
+ wkn = realloc(m->creds.well_known_names, (n + 2) * sizeof(char*));
+ if (!wkn) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ wkn[n] = d->name.name;
+ wkn[n+1] = NULL;
+ m->creds.well_known_names = wkn;
+
+ m->creds.mask |= SD_BUS_CREDS_WELL_KNOWN_NAMES;
+ }
+ break;
+
+ case KDBUS_ITEM_CONN_DESCRIPTION:
+ m->creds.description = d->str;
+ m->creds.mask |= SD_BUS_CREDS_DESCRIPTION & bus->creds_mask;
+ break;
+
+ case KDBUS_ITEM_AUXGROUPS:
+
+ if (bus->creds_mask & SD_BUS_CREDS_SUPPLEMENTARY_GIDS) {
+ size_t i, n;
+ gid_t *g;
+
+ n = (d->size - offsetof(struct kdbus_item, data64)) / sizeof(uint64_t);
+ g = new(gid_t, n);
+ if (!g) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ for (i = 0; i < n; i++)
+ g[i] = d->data64[i];
+
+ m->creds.supplementary_gids = g;
+ m->creds.n_supplementary_gids = n;
+ m->creds.mask |= SD_BUS_CREDS_SUPPLEMENTARY_GIDS;
+ }
+
+ break;
+
+ case KDBUS_ITEM_FDS:
+ case KDBUS_ITEM_SECLABEL:
+ case KDBUS_ITEM_BLOOM_FILTER:
+ break;
+
+ default:
+ log_debug("Got unknown field from kernel %llu", d->type);
+ }
+ }
+
+ /* If we requested the list of well-known names to be appended
+ * and the sender had none no item for it will be
+ * attached. However, this does *not* mean that the kernel
+ * didn't want to provide this information to us. Hence, let's
+ * explicitly mark this information as available if it was
+ * requested. */
+ m->creds.mask |= bus->creds_mask & SD_BUS_CREDS_WELL_KNOWN_NAMES;
+
+ r = bus_message_parse_fields(m);
+ if (r < 0)
+ goto fail;
+
+ /* Refuse messages if kdbus and dbus1 cookie doesn't match up */
+ if ((uint64_t) m->header->dbus2.cookie != k->cookie) {
+ r = -EBADMSG;
+ goto fail;
+ }
+
+ /* Refuse messages where the reply flag doesn't match up */
+ if (!(m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED) != !!(k->flags & KDBUS_MSG_EXPECT_REPLY)) {
+ r = -EBADMSG;
+ goto fail;
+ }
+
+ /* Refuse reply messages where the reply cookie doesn't match up */
+ if ((m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED) && m->reply_cookie != k->cookie_reply) {
+ r = -EBADMSG;
+ goto fail;
+ }
+
+ /* Refuse messages where the autostart flag doesn't match up */
+ if (!(m->header->flags & BUS_MESSAGE_NO_AUTO_START) != !(k->flags & KDBUS_MSG_NO_AUTO_START)) {
+ r = -EBADMSG;
+ goto fail;
+ }
+
+ /* Override information from the user header with data from the kernel */
+ if (k->src_id == KDBUS_SRC_ID_KERNEL)
+ bus_message_set_sender_driver(bus, m);
+ else {
+ xsprintf(m->sender_buffer, ":1.%llu",
+ (unsigned long long)k->src_id);
+ m->sender = m->creds.unique_name = m->sender_buffer;
+ }
+
+ if (destination)
+ m->destination = destination;
+ else if (k->dst_id == KDBUS_DST_ID_BROADCAST)
+ m->destination = NULL;
+ else if (k->dst_id == KDBUS_DST_ID_NAME)
+ m->destination = bus->unique_name; /* fill in unique name if the well-known name is missing */
+ else {
+ xsprintf(m->destination_buffer, ":1.%llu",
+ (unsigned long long)k->dst_id);
+ m->destination = m->destination_buffer;
+ }
+
+ /* We take possession of the kmsg struct now */
+ m->kdbus = k;
+ m->release_kdbus = true;
+ m->free_fds = true;
+ fds = NULL;
+
+ bus->rqueue[bus->rqueue_size++] = m;
+
+ return 1;
+
+fail:
+ unset_memfds(m);
+ sd_bus_message_unref(m);
+
+ return r;
+}
+
+int bus_kernel_take_fd(sd_bus *b) {
+ struct kdbus_bloom_parameter *bloom = NULL;
+ struct kdbus_item *items, *item;
+ struct kdbus_cmd_hello *hello;
+ _cleanup_free_ char *g = NULL;
+ const char *name;
+ size_t l = 0, m = 0, sz;
+ int r;
+
+ assert(b);
+
+ if (b->is_server)
+ return -EINVAL;
+
+ b->use_memfd = 1;
+
+ if (b->description) {
+ g = bus_label_escape(b->description);
+ if (!g)
+ return -ENOMEM;
+
+ name = g;
+ } else {
+ char pr[17] = {};
+
+ /* If no name is explicitly set, we'll include a hint
+ * indicating the library implementation, a hint which
+ * kind of bus this is and the thread name */
+
+ assert_se(prctl(PR_GET_NAME, (unsigned long) pr) >= 0);
+
+ if (isempty(pr)) {
+ name = b->is_system ? "sd-system" :
+ b->is_user ? "sd-user" : "sd";
+ } else {
+ _cleanup_free_ char *e = NULL;
+
+ e = bus_label_escape(pr);
+ if (!e)
+ return -ENOMEM;
+
+ g = strappend(b->is_system ? "sd-system-" :
+ b->is_user ? "sd-user-" : "sd-",
+ e);
+ if (!g)
+ return -ENOMEM;
+
+ name = g;
+ }
+
+ b->description = bus_label_unescape(name);
+ if (!b->description)
+ return -ENOMEM;
+ }
+
+ m = strlen(name);
+
+ sz = ALIGN8(offsetof(struct kdbus_cmd_hello, items)) +
+ ALIGN8(offsetof(struct kdbus_item, str) + m + 1);
+
+ if (b->fake_creds_valid)
+ sz += ALIGN8(offsetof(struct kdbus_item, creds) + sizeof(struct kdbus_creds));
+
+ if (b->fake_pids_valid)
+ sz += ALIGN8(offsetof(struct kdbus_item, pids) + sizeof(struct kdbus_pids));
+
+ if (b->fake_label) {
+ l = strlen(b->fake_label);
+ sz += ALIGN8(offsetof(struct kdbus_item, str) + l + 1);
+ }
+
+ hello = alloca0_align(sz, 8);
+ hello->size = sz;
+ hello->flags = b->hello_flags;
+ hello->attach_flags_send = _KDBUS_ATTACH_ANY;
+ hello->attach_flags_recv = b->attach_flags;
+ hello->pool_size = KDBUS_POOL_SIZE;
+
+ item = hello->items;
+
+ item->size = offsetof(struct kdbus_item, str) + m + 1;
+ item->type = KDBUS_ITEM_CONN_DESCRIPTION;
+ memcpy(item->str, name, m + 1);
+ item = KDBUS_ITEM_NEXT(item);
+
+ if (b->fake_creds_valid) {
+ item->size = offsetof(struct kdbus_item, creds) + sizeof(struct kdbus_creds);
+ item->type = KDBUS_ITEM_CREDS;
+ item->creds = b->fake_creds;
+
+ item = KDBUS_ITEM_NEXT(item);
+ }
+
+ if (b->fake_pids_valid) {
+ item->size = offsetof(struct kdbus_item, pids) + sizeof(struct kdbus_pids);
+ item->type = KDBUS_ITEM_PIDS;
+ item->pids = b->fake_pids;
+
+ item = KDBUS_ITEM_NEXT(item);
+ }
+
+ if (b->fake_label) {
+ item->size = offsetof(struct kdbus_item, str) + l + 1;
+ item->type = KDBUS_ITEM_SECLABEL;
+ memcpy(item->str, b->fake_label, l+1);
+ }
+
+ r = ioctl(b->input_fd, KDBUS_CMD_HELLO, hello);
+ if (r < 0) {
+ if (errno == ENOTTY)
+ /* If the ioctl is not supported we assume that the
+ * API version changed in a major incompatible way,
+ * let's indicate an API incompatibility in this
+ * case. */
+ return -ESOCKTNOSUPPORT;
+
+ return -errno;
+ }
+
+ if (!b->kdbus_buffer) {
+ b->kdbus_buffer = mmap(NULL, KDBUS_POOL_SIZE, PROT_READ, MAP_SHARED, b->input_fd, 0);
+ if (b->kdbus_buffer == MAP_FAILED) {
+ b->kdbus_buffer = NULL;
+ r = -errno;
+ goto fail;
+ }
+ }
+
+ /* The higher 32bit of the bus_flags fields are considered
+ * 'incompatible flags'. Refuse them all for now. */
+ if (hello->bus_flags > 0xFFFFFFFFULL) {
+ r = -ESOCKTNOSUPPORT;
+ goto fail;
+ }
+
+ /* extract bloom parameters from items */
+ items = (void*)((uint8_t*)b->kdbus_buffer + hello->offset);
+ KDBUS_FOREACH(item, items, hello->items_size) {
+ switch (item->type) {
+ case KDBUS_ITEM_BLOOM_PARAMETER:
+ bloom = &item->bloom_parameter;
+ break;
+ }
+ }
+
+ if (!bloom || !bloom_validate_parameters((size_t) bloom->size, (unsigned) bloom->n_hash)) {
+ r = -EOPNOTSUPP;
+ goto fail;
+ }
+
+ b->bloom_size = (size_t) bloom->size;
+ b->bloom_n_hash = (unsigned) bloom->n_hash;
+
+ if (asprintf(&b->unique_name, ":1.%llu", (unsigned long long) hello->id) < 0) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ b->unique_id = hello->id;
+
+ b->is_kernel = true;
+ b->bus_client = true;
+ b->can_fds = !!(hello->flags & KDBUS_HELLO_ACCEPT_FD);
+ b->message_version = 2;
+ b->message_endian = BUS_NATIVE_ENDIAN;
+
+ /* the kernel told us the UUID of the underlying bus */
+ memcpy(b->server_id.bytes, hello->id128, sizeof(b->server_id.bytes));
+
+ /* free returned items */
+ (void) bus_kernel_cmd_free(b, hello->offset);
+ return bus_start_running(b);
+
+fail:
+ (void) bus_kernel_cmd_free(b, hello->offset);
+ return r;
+}
+
+int bus_kernel_connect(sd_bus *b) {
+ assert(b);
+ assert(b->input_fd < 0);
+ assert(b->output_fd < 0);
+ assert(b->kernel);
+
+ if (b->is_server)
+ return -EINVAL;
+
+ b->input_fd = open(b->kernel, O_RDWR|O_NOCTTY|O_CLOEXEC);
+ if (b->input_fd < 0)
+ return -errno;
+
+ b->output_fd = b->input_fd;
+
+ return bus_kernel_take_fd(b);
+}
+
+int bus_kernel_cmd_free(sd_bus *bus, uint64_t offset) {
+ struct kdbus_cmd_free cmd = {
+ .size = sizeof(cmd),
+ .offset = offset,
+ };
+ int r;
+
+ assert(bus);
+ assert(bus->is_kernel);
+
+ r = ioctl(bus->input_fd, KDBUS_CMD_FREE, &cmd);
+ if (r < 0)
+ return -errno;
+
+ return 0;
+}
+
+static void close_kdbus_msg(sd_bus *bus, struct kdbus_msg *k) {
+ struct kdbus_item *d;
+
+ assert(bus);
+ assert(k);
+
+ KDBUS_ITEM_FOREACH(d, k, items) {
+ if (d->type == KDBUS_ITEM_FDS)
+ close_many(d->fds, (d->size - offsetof(struct kdbus_item, fds)) / sizeof(int));
+ else if (d->type == KDBUS_ITEM_PAYLOAD_MEMFD)
+ safe_close(d->memfd.fd);
+ }
+
+ bus_kernel_cmd_free(bus, (uint8_t*) k - (uint8_t*) bus->kdbus_buffer);
+}
+
+int bus_kernel_write_message(sd_bus *bus, sd_bus_message *m, bool hint_sync_call) {
+ struct kdbus_cmd_send cmd = { };
+ int r;
+
+ assert(bus);
+ assert(m);
+ assert(bus->state == BUS_RUNNING);
+
+ /* If we can't deliver, we want room for the error message */
+ r = bus_rqueue_make_room(bus);
+ if (r < 0)
+ return r;
+
+ r = bus_message_setup_kmsg(bus, m);
+ if (r < 0)
+ return r;
+
+ cmd.size = sizeof(cmd);
+ cmd.msg_address = (uintptr_t)m->kdbus;
+
+ /* If this is a synchronous method call, then let's tell the
+ * kernel, so that it can pass CPU time/scheduling to the
+ * destination for the time, if it wants to. If we
+ * synchronously wait for the result anyway, we won't need CPU
+ * anyway. */
+ if (hint_sync_call) {
+ m->kdbus->flags |= KDBUS_MSG_EXPECT_REPLY;
+ cmd.flags |= KDBUS_SEND_SYNC_REPLY;
+ }
+
+ r = ioctl(bus->output_fd, KDBUS_CMD_SEND, &cmd);
+ if (r < 0) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ sd_bus_message *reply;
+
+ if (errno == EAGAIN || errno == EINTR)
+ return 0;
+ else if (errno == ENXIO || errno == ESRCH) {
+
+ /* ENXIO: unique name not known
+ * ESRCH: well-known name not known */
+
+ if (m->header->type == SD_BUS_MESSAGE_METHOD_CALL)
+ sd_bus_error_setf(&error, SD_BUS_ERROR_SERVICE_UNKNOWN, "Destination %s not known", m->destination);
+ else {
+ log_debug("Could not deliver message to %s as destination is not known. Ignoring.", m->destination);
+ return 0;
+ }
+
+ } else if (errno == EADDRNOTAVAIL) {
+
+ /* EADDRNOTAVAIL: activation is possible, but turned off in request flags */
+
+ if (m->header->type == SD_BUS_MESSAGE_METHOD_CALL)
+ sd_bus_error_setf(&error, SD_BUS_ERROR_SERVICE_UNKNOWN, "Activation of %s not requested", m->destination);
+ else {
+ log_debug("Could not deliver message to %s as destination is not activated. Ignoring.", m->destination);
+ return 0;
+ }
+ } else
+ return -errno;
+
+ r = bus_message_new_synthetic_error(
+ bus,
+ BUS_MESSAGE_COOKIE(m),
+ &error,
+ &reply);
+
+ if (r < 0)
+ return r;
+
+ r = bus_seal_synthetic_message(bus, reply);
+ if (r < 0)
+ return r;
+
+ bus->rqueue[bus->rqueue_size++] = reply;
+
+ } else if (hint_sync_call) {
+ struct kdbus_msg *k;
+
+ k = (struct kdbus_msg *)((uint8_t *)bus->kdbus_buffer + cmd.reply.offset);
+ assert(k);
+
+ if (k->payload_type == KDBUS_PAYLOAD_DBUS) {
+
+ r = bus_kernel_make_message(bus, k);
+ if (r < 0) {
+ close_kdbus_msg(bus, k);
+
+ /* Anybody can send us invalid messages, let's just drop them. */
+ if (r == -EBADMSG || r == -EPROTOTYPE)
+ log_debug_errno(r, "Ignoring invalid synchronous reply: %m");
+ else
+ return r;
+ }
+ } else {
+ log_debug("Ignoring message with unknown payload type %llu.", (unsigned long long) k->payload_type);
+ close_kdbus_msg(bus, k);
+ }
+ }
+
+ return 1;
+}
+
+static int push_name_owner_changed(
+ sd_bus *bus,
+ const char *name,
+ const char *old_owner,
+ const char *new_owner,
+ const struct kdbus_timestamp *ts) {
+
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+ int r;
+
+ assert(bus);
+
+ r = sd_bus_message_new_signal(
+ bus,
+ &m,
+ "/org/freedesktop/DBus",
+ "org.freedesktop.DBus",
+ "NameOwnerChanged");
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append(m, "sss", name, old_owner, new_owner);
+ if (r < 0)
+ return r;
+
+ bus_message_set_sender_driver(bus, m);
+ message_set_timestamp(bus, m, ts);
+
+ r = bus_seal_synthetic_message(bus, m);
+ if (r < 0)
+ return r;
+
+ bus->rqueue[bus->rqueue_size++] = m;
+ m = NULL;
+
+ return 1;
+}
+
+static int translate_name_change(
+ sd_bus *bus,
+ const struct kdbus_msg *k,
+ const struct kdbus_item *d,
+ const struct kdbus_timestamp *ts) {
+
+ char new_owner[UNIQUE_NAME_MAX], old_owner[UNIQUE_NAME_MAX];
+
+ assert(bus);
+ assert(k);
+ assert(d);
+
+ if (d->type == KDBUS_ITEM_NAME_ADD || (d->name_change.old_id.flags & (KDBUS_NAME_IN_QUEUE|KDBUS_NAME_ACTIVATOR)))
+ old_owner[0] = 0;
+ else
+ sprintf(old_owner, ":1.%llu", (unsigned long long) d->name_change.old_id.id);
+
+ if (d->type == KDBUS_ITEM_NAME_REMOVE || (d->name_change.new_id.flags & (KDBUS_NAME_IN_QUEUE|KDBUS_NAME_ACTIVATOR))) {
+
+ if (isempty(old_owner))
+ return 0;
+
+ new_owner[0] = 0;
+ } else
+ sprintf(new_owner, ":1.%llu", (unsigned long long) d->name_change.new_id.id);
+
+ return push_name_owner_changed(bus, d->name_change.name, old_owner, new_owner, ts);
+}
+
+static int translate_id_change(
+ sd_bus *bus,
+ const struct kdbus_msg *k,
+ const struct kdbus_item *d,
+ const struct kdbus_timestamp *ts) {
+
+ char owner[UNIQUE_NAME_MAX];
+
+ assert(bus);
+ assert(k);
+ assert(d);
+
+ sprintf(owner, ":1.%llu", d->id_change.id);
+
+ return push_name_owner_changed(
+ bus, owner,
+ d->type == KDBUS_ITEM_ID_ADD ? NULL : owner,
+ d->type == KDBUS_ITEM_ID_ADD ? owner : NULL,
+ ts);
+}
+
+static int translate_reply(
+ sd_bus *bus,
+ const struct kdbus_msg *k,
+ const struct kdbus_item *d,
+ const struct kdbus_timestamp *ts) {
+
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+ int r;
+
+ assert(bus);
+ assert(k);
+ assert(d);
+
+ r = bus_message_new_synthetic_error(
+ bus,
+ k->cookie_reply,
+ d->type == KDBUS_ITEM_REPLY_TIMEOUT ?
+ &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_NO_REPLY, "Method call timed out") :
+ &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_NO_REPLY, "Method call peer died"),
+ &m);
+ if (r < 0)
+ return r;
+
+ message_set_timestamp(bus, m, ts);
+
+ r = bus_seal_synthetic_message(bus, m);
+ if (r < 0)
+ return r;
+
+ bus->rqueue[bus->rqueue_size++] = m;
+ m = NULL;
+
+ return 1;
+}
+
+static int bus_kernel_translate_message(sd_bus *bus, struct kdbus_msg *k) {
+ static int (* const translate[])(sd_bus *bus, const struct kdbus_msg *k, const struct kdbus_item *d, const struct kdbus_timestamp *ts) = {
+ [KDBUS_ITEM_NAME_ADD - _KDBUS_ITEM_KERNEL_BASE] = translate_name_change,
+ [KDBUS_ITEM_NAME_REMOVE - _KDBUS_ITEM_KERNEL_BASE] = translate_name_change,
+ [KDBUS_ITEM_NAME_CHANGE - _KDBUS_ITEM_KERNEL_BASE] = translate_name_change,
+
+ [KDBUS_ITEM_ID_ADD - _KDBUS_ITEM_KERNEL_BASE] = translate_id_change,
+ [KDBUS_ITEM_ID_REMOVE - _KDBUS_ITEM_KERNEL_BASE] = translate_id_change,
+
+ [KDBUS_ITEM_REPLY_TIMEOUT - _KDBUS_ITEM_KERNEL_BASE] = translate_reply,
+ [KDBUS_ITEM_REPLY_DEAD - _KDBUS_ITEM_KERNEL_BASE] = translate_reply,
+ };
+
+ struct kdbus_item *d, *found = NULL;
+ struct kdbus_timestamp *ts = NULL;
+
+ assert(bus);
+ assert(k);
+ assert(k->payload_type == KDBUS_PAYLOAD_KERNEL);
+
+ KDBUS_ITEM_FOREACH(d, k, items) {
+ if (d->type == KDBUS_ITEM_TIMESTAMP)
+ ts = &d->timestamp;
+ else if (d->type >= _KDBUS_ITEM_KERNEL_BASE && d->type < _KDBUS_ITEM_KERNEL_BASE + ELEMENTSOF(translate)) {
+ if (found)
+ return -EBADMSG;
+ found = d;
+ } else
+ log_debug("Got unknown field from kernel %llu", d->type);
+ }
+
+ if (!found) {
+ log_debug("Didn't find a kernel message to translate.");
+ return 0;
+ }
+
+ return translate[found->type - _KDBUS_ITEM_KERNEL_BASE](bus, k, found, ts);
+}
+
+int bus_kernel_read_message(sd_bus *bus, bool hint_priority, int64_t priority) {
+ struct kdbus_cmd_recv recv = { .size = sizeof(recv) };
+ struct kdbus_msg *k;
+ int r;
+
+ assert(bus);
+
+ r = bus_rqueue_make_room(bus);
+ if (r < 0)
+ return r;
+
+ if (hint_priority) {
+ recv.flags |= KDBUS_RECV_USE_PRIORITY;
+ recv.priority = priority;
+ }
+
+ r = ioctl(bus->input_fd, KDBUS_CMD_RECV, &recv);
+ if (recv.return_flags & KDBUS_RECV_RETURN_DROPPED_MSGS)
+ log_debug("%s: kdbus reports %" PRIu64 " dropped broadcast messages, ignoring.", strna(bus->description), (uint64_t) recv.dropped_msgs);
+ if (r < 0) {
+ if (errno == EAGAIN)
+ return 0;
+
+ return -errno;
+ }
+
+ k = (struct kdbus_msg *)((uint8_t *)bus->kdbus_buffer + recv.msg.offset);
+ if (k->payload_type == KDBUS_PAYLOAD_DBUS) {
+ r = bus_kernel_make_message(bus, k);
+
+ /* Anybody can send us invalid messages, let's just drop them. */
+ if (r == -EBADMSG || r == -EPROTOTYPE) {
+ log_debug_errno(r, "Ignoring invalid message: %m");
+ r = 0;
+ }
+
+ if (r <= 0)
+ close_kdbus_msg(bus, k);
+ } else if (k->payload_type == KDBUS_PAYLOAD_KERNEL) {
+ r = bus_kernel_translate_message(bus, k);
+ close_kdbus_msg(bus, k);
+ } else {
+ log_debug("Ignoring message with unknown payload type %llu.", (unsigned long long) k->payload_type);
+ r = 0;
+ close_kdbus_msg(bus, k);
+ }
+
+ return r < 0 ? r : 1;
+}
+
+int bus_kernel_pop_memfd(sd_bus *bus, void **address, size_t *mapped, size_t *allocated) {
+ struct memfd_cache *c;
+ int fd;
+
+ assert(address);
+ assert(mapped);
+ assert(allocated);
+
+ if (!bus || !bus->is_kernel)
+ return -EOPNOTSUPP;
+
+ assert_se(pthread_mutex_lock(&bus->memfd_cache_mutex) == 0);
+
+ if (bus->n_memfd_cache <= 0) {
+ int r;
+
+ assert_se(pthread_mutex_unlock(&bus->memfd_cache_mutex) == 0);
+
+ r = memfd_new(bus->description);
+ if (r < 0)
+ return r;
+
+ *address = NULL;
+ *mapped = 0;
+ *allocated = 0;
+ return r;
+ }
+
+ c = &bus->memfd_cache[--bus->n_memfd_cache];
+
+ assert(c->fd >= 0);
+ assert(c->mapped == 0 || c->address);
+
+ *address = c->address;
+ *mapped = c->mapped;
+ *allocated = c->allocated;
+ fd = c->fd;
+
+ assert_se(pthread_mutex_unlock(&bus->memfd_cache_mutex) == 0);
+
+ return fd;
+}
+
+static void close_and_munmap(int fd, void *address, size_t size) {
+ if (size > 0)
+ assert_se(munmap(address, PAGE_ALIGN(size)) >= 0);
+
+ safe_close(fd);
+}
+
+void bus_kernel_push_memfd(sd_bus *bus, int fd, void *address, size_t mapped, size_t allocated) {
+ struct memfd_cache *c;
+ uint64_t max_mapped = PAGE_ALIGN(MEMFD_CACHE_ITEM_SIZE_MAX);
+
+ assert(fd >= 0);
+ assert(mapped == 0 || address);
+
+ if (!bus || !bus->is_kernel) {
+ close_and_munmap(fd, address, mapped);
+ return;
+ }
+
+ assert_se(pthread_mutex_lock(&bus->memfd_cache_mutex) == 0);
+
+ if (bus->n_memfd_cache >= ELEMENTSOF(bus->memfd_cache)) {
+ assert_se(pthread_mutex_unlock(&bus->memfd_cache_mutex) == 0);
+
+ close_and_munmap(fd, address, mapped);
+ return;
+ }
+
+ c = &bus->memfd_cache[bus->n_memfd_cache++];
+ c->fd = fd;
+ c->address = address;
+
+ /* If overly long, let's return a bit to the OS */
+ if (mapped > max_mapped) {
+ assert_se(memfd_set_size(fd, max_mapped) >= 0);
+ assert_se(munmap((uint8_t*) address + max_mapped, PAGE_ALIGN(mapped - max_mapped)) >= 0);
+ c->mapped = c->allocated = max_mapped;
+ } else {
+ c->mapped = mapped;
+ c->allocated = allocated;
+ }
+
+ assert_se(pthread_mutex_unlock(&bus->memfd_cache_mutex) == 0);
+}
+
+void bus_kernel_flush_memfd(sd_bus *b) {
+ unsigned i;
+
+ assert(b);
+
+ for (i = 0; i < b->n_memfd_cache; i++)
+ close_and_munmap(b->memfd_cache[i].fd, b->memfd_cache[i].address, b->memfd_cache[i].mapped);
+}
+
+uint64_t request_name_flags_to_kdbus(uint64_t flags) {
+ uint64_t f = 0;
+
+ if (flags & SD_BUS_NAME_ALLOW_REPLACEMENT)
+ f |= KDBUS_NAME_ALLOW_REPLACEMENT;
+
+ if (flags & SD_BUS_NAME_REPLACE_EXISTING)
+ f |= KDBUS_NAME_REPLACE_EXISTING;
+
+ if (flags & SD_BUS_NAME_QUEUE)
+ f |= KDBUS_NAME_QUEUE;
+
+ return f;
+}
+
+uint64_t attach_flags_to_kdbus(uint64_t mask) {
+ uint64_t m = 0;
+
+ if (mask & (SD_BUS_CREDS_UID|SD_BUS_CREDS_EUID|SD_BUS_CREDS_SUID|SD_BUS_CREDS_FSUID|
+ SD_BUS_CREDS_GID|SD_BUS_CREDS_EGID|SD_BUS_CREDS_SGID|SD_BUS_CREDS_FSGID))
+ m |= KDBUS_ATTACH_CREDS;
+
+ if (mask & (SD_BUS_CREDS_PID|SD_BUS_CREDS_TID|SD_BUS_CREDS_PPID))
+ m |= KDBUS_ATTACH_PIDS;
+
+ if (mask & SD_BUS_CREDS_COMM)
+ m |= KDBUS_ATTACH_PID_COMM;
+
+ if (mask & SD_BUS_CREDS_TID_COMM)
+ m |= KDBUS_ATTACH_TID_COMM;
+
+ if (mask & SD_BUS_CREDS_EXE)
+ m |= KDBUS_ATTACH_EXE;
+
+ if (mask & SD_BUS_CREDS_CMDLINE)
+ m |= KDBUS_ATTACH_CMDLINE;
+
+ if (mask & (SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_OWNER_UID))
+ m |= KDBUS_ATTACH_CGROUP;
+
+ if (mask & (SD_BUS_CREDS_EFFECTIVE_CAPS|SD_BUS_CREDS_PERMITTED_CAPS|SD_BUS_CREDS_INHERITABLE_CAPS|SD_BUS_CREDS_BOUNDING_CAPS))
+ m |= KDBUS_ATTACH_CAPS;
+
+ if (mask & SD_BUS_CREDS_SELINUX_CONTEXT)
+ m |= KDBUS_ATTACH_SECLABEL;
+
+ if (mask & (SD_BUS_CREDS_AUDIT_SESSION_ID|SD_BUS_CREDS_AUDIT_LOGIN_UID))
+ m |= KDBUS_ATTACH_AUDIT;
+
+ if (mask & SD_BUS_CREDS_WELL_KNOWN_NAMES)
+ m |= KDBUS_ATTACH_NAMES;
+
+ if (mask & SD_BUS_CREDS_DESCRIPTION)
+ m |= KDBUS_ATTACH_CONN_DESCRIPTION;
+
+ if (mask & SD_BUS_CREDS_SUPPLEMENTARY_GIDS)
+ m |= KDBUS_ATTACH_AUXGROUPS;
+
+ return m;
+}
+
+int bus_kernel_create_bus(const char *name, bool world, char **s) {
+ struct kdbus_cmd *make;
+ struct kdbus_item *n;
+ size_t l;
+ int fd;
+
+ assert(name);
+ assert(s);
+
+ fd = open("/sys/fs/kdbus/control", O_RDWR|O_NOCTTY|O_CLOEXEC);
+ if (fd < 0)
+ return -errno;
+
+ l = strlen(name);
+ make = alloca0_align(offsetof(struct kdbus_cmd, items) +
+ ALIGN8(offsetof(struct kdbus_item, bloom_parameter) + sizeof(struct kdbus_bloom_parameter)) +
+ ALIGN8(offsetof(struct kdbus_item, data64) + sizeof(uint64_t)) +
+ ALIGN8(offsetof(struct kdbus_item, str) + DECIMAL_STR_MAX(uid_t) + 1 + l + 1),
+ 8);
+
+ make->size = offsetof(struct kdbus_cmd, items);
+
+ /* Set the bloom parameters */
+ n = make->items;
+ n->size = offsetof(struct kdbus_item, bloom_parameter) +
+ sizeof(struct kdbus_bloom_parameter);
+ n->type = KDBUS_ITEM_BLOOM_PARAMETER;
+ n->bloom_parameter.size = DEFAULT_BLOOM_SIZE;
+ n->bloom_parameter.n_hash = DEFAULT_BLOOM_N_HASH;
+
+ assert_cc(DEFAULT_BLOOM_SIZE > 0);
+ assert_cc(DEFAULT_BLOOM_N_HASH > 0);
+
+ make->size += ALIGN8(n->size);
+
+ /* Provide all metadata via bus-owner queries */
+ n = KDBUS_ITEM_NEXT(n);
+ n->type = KDBUS_ITEM_ATTACH_FLAGS_SEND;
+ n->size = offsetof(struct kdbus_item, data64) + sizeof(uint64_t);
+ n->data64[0] = _KDBUS_ATTACH_ANY;
+ make->size += ALIGN8(n->size);
+
+ /* Set the a good name */
+ n = KDBUS_ITEM_NEXT(n);
+ sprintf(n->str, UID_FMT "-%s", getuid(), name);
+ n->size = offsetof(struct kdbus_item, str) + strlen(n->str) + 1;
+ n->type = KDBUS_ITEM_MAKE_NAME;
+ make->size += ALIGN8(n->size);
+
+ make->flags = world ? KDBUS_MAKE_ACCESS_WORLD : 0;
+
+ if (ioctl(fd, KDBUS_CMD_BUS_MAKE, make) < 0) {
+ safe_close(fd);
+
+ /* Major API change? then the ioctls got shuffled around. */
+ if (errno == ENOTTY)
+ return -ESOCKTNOSUPPORT;
+
+ return -errno;
+ }
+
+ if (s) {
+ char *p;
+
+ p = strjoin("/sys/fs/kdbus/", n->str, "/bus", NULL);
+ if (!p) {
+ safe_close(fd);
+ return -ENOMEM;
+ }
+
+ *s = p;
+ }
+
+ return fd;
+}
+
+int bus_kernel_open_bus_fd(const char *bus, char **path) {
+ char *p;
+ int fd;
+ size_t len;
+
+ assert(bus);
+
+ len = strlen("/sys/fs/kdbus/") + DECIMAL_STR_MAX(uid_t) + 1 + strlen(bus) + strlen("/bus") + 1;
+
+ if (path) {
+ p = new(char, len);
+ if (!p)
+ return -ENOMEM;
+ } else
+ p = newa(char, len);
+
+ sprintf(p, "/sys/fs/kdbus/" UID_FMT "-%s/bus", getuid(), bus);
+
+ fd = open(p, O_RDWR|O_NOCTTY|O_CLOEXEC);
+ if (fd < 0) {
+ if (path)
+ free(p);
+
+ return -errno;
+ }
+
+ if (path)
+ *path = p;
+
+ return fd;
+}
+
+int bus_kernel_try_close(sd_bus *bus) {
+ struct kdbus_cmd byebye = { .size = sizeof(byebye) };
+
+ assert(bus);
+ assert(bus->is_kernel);
+
+ if (ioctl(bus->input_fd, KDBUS_CMD_BYEBYE, &byebye) < 0)
+ return -errno;
+
+ return 0;
+}
+
+int bus_kernel_drop_one(int fd) {
+ struct kdbus_cmd_recv recv = {
+ .size = sizeof(recv),
+ .flags = KDBUS_RECV_DROP,
+ };
+
+ assert(fd >= 0);
+
+ if (ioctl(fd, KDBUS_CMD_RECV, &recv) < 0)
+ return -errno;
+
+ return 0;
+}
+
+int bus_kernel_realize_attach_flags(sd_bus *bus) {
+ struct kdbus_cmd *update;
+ struct kdbus_item *n;
+
+ assert(bus);
+ assert(bus->is_kernel);
+
+ update = alloca0_align(offsetof(struct kdbus_cmd, items) +
+ ALIGN8(offsetof(struct kdbus_item, data64) + sizeof(uint64_t)),
+ 8);
+
+ n = update->items;
+ n->type = KDBUS_ITEM_ATTACH_FLAGS_RECV;
+ n->size = offsetof(struct kdbus_item, data64) + sizeof(uint64_t);
+ n->data64[0] = bus->attach_flags;
+
+ update->size =
+ offsetof(struct kdbus_cmd, items) +
+ ALIGN8(n->size);
+
+ if (ioctl(bus->input_fd, KDBUS_CMD_UPDATE, update) < 0)
+ return -errno;
+
+ return 0;
+}
+
+int bus_kernel_get_bus_name(sd_bus *bus, char **name) {
+ struct kdbus_cmd_info cmd = {
+ .size = sizeof(struct kdbus_cmd_info),
+ };
+ struct kdbus_info *info;
+ struct kdbus_item *item;
+ char *n = NULL;
+ int r;
+
+ assert(bus);
+ assert(name);
+ assert(bus->is_kernel);
+
+ r = ioctl(bus->input_fd, KDBUS_CMD_BUS_CREATOR_INFO, &cmd);
+ if (r < 0)
+ return -errno;
+
+ info = (struct kdbus_info*) ((uint8_t*) bus->kdbus_buffer + cmd.offset);
+
+ KDBUS_ITEM_FOREACH(item, info, items)
+ if (item->type == KDBUS_ITEM_MAKE_NAME) {
+ r = free_and_strdup(&n, item->str);
+ break;
+ }
+
+ bus_kernel_cmd_free(bus, cmd.offset);
+
+ if (r < 0)
+ return r;
+ if (!n)
+ return -EIO;
+
+ *name = n;
+ return 0;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-kernel.h b/src/libsystemd/libsystemd-internal/sd-bus/bus-kernel.h
new file mode 100644
index 0000000000..2927ba26a5
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-kernel.h
@@ -0,0 +1,93 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <stdbool.h>
+
+#include <systemd/sd-bus.h>
+
+#define KDBUS_ITEM_NEXT(item) \
+ (typeof(item))(((uint8_t *)item) + ALIGN8((item)->size))
+
+#define KDBUS_ITEM_FOREACH(part, head, first) \
+ for (part = (head)->first; \
+ ((uint8_t *)(part) < (uint8_t *)(head) + (head)->size) && \
+ ((uint8_t *) part >= (uint8_t *) head); \
+ part = KDBUS_ITEM_NEXT(part))
+#define KDBUS_FOREACH(iter, first, _size) \
+ for (iter = (first); \
+ ((uint8_t *)(iter) < (uint8_t *)(first) + (_size)) && \
+ ((uint8_t *)(iter) >= (uint8_t *)(first)); \
+ iter = (void*)(((uint8_t *)iter) + ALIGN8((iter)->size)))
+
+#define KDBUS_ITEM_HEADER_SIZE offsetof(struct kdbus_item, data)
+#define KDBUS_ITEM_SIZE(s) ALIGN8((s) + KDBUS_ITEM_HEADER_SIZE)
+
+#define MEMFD_CACHE_MAX 32
+
+/* When we cache a memfd block for reuse, we will truncate blocks
+ * longer than this in order not to keep too much data around. */
+#define MEMFD_CACHE_ITEM_SIZE_MAX (128*1024)
+
+/* This determines at which minimum size we prefer sending memfds over
+ * sending vectors */
+#define MEMFD_MIN_SIZE (512*1024)
+
+/* The size of the per-connection memory pool that we set up and where
+ * the kernel places our incoming messages */
+#define KDBUS_POOL_SIZE (16*1024*1024)
+
+struct memfd_cache {
+ int fd;
+ void *address;
+ size_t mapped;
+ size_t allocated;
+};
+
+int bus_kernel_connect(sd_bus *b);
+int bus_kernel_take_fd(sd_bus *b);
+
+int bus_kernel_write_message(sd_bus *bus, sd_bus_message *m, bool hint_sync_call);
+int bus_kernel_read_message(sd_bus *bus, bool hint_priority, int64_t priority);
+
+int bus_kernel_open_bus_fd(const char *bus, char **path);
+
+int bus_kernel_create_bus(const char *name, bool world, char **s);
+int bus_kernel_create_endpoint(const char *bus_name, const char *ep_name, char **path);
+
+int bus_kernel_pop_memfd(sd_bus *bus, void **address, size_t *mapped, size_t *allocated);
+void bus_kernel_push_memfd(sd_bus *bus, int fd, void *address, size_t mapped, size_t allocated);
+
+void bus_kernel_flush_memfd(sd_bus *bus);
+
+int bus_kernel_parse_unique_name(const char *s, uint64_t *id);
+
+uint64_t request_name_flags_to_kdbus(uint64_t sd_bus_flags);
+uint64_t attach_flags_to_kdbus(uint64_t sd_bus_flags);
+
+int bus_kernel_try_close(sd_bus *bus);
+
+int bus_kernel_drop_one(int fd);
+
+int bus_kernel_realize_attach_flags(sd_bus *bus);
+
+int bus_kernel_get_bus_name(sd_bus *bus, char **name);
+
+int bus_kernel_cmd_free(sd_bus *bus, uint64_t offset);
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-match.c b/src/libsystemd/libsystemd-internal/sd-bus/bus-match.c
new file mode 100644
index 0000000000..397baf6f33
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-match.c
@@ -0,0 +1,1218 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "alloc-util.h"
+#include "bus-internal.h"
+#include "bus-match.h"
+#include "bus-message.h"
+#include "bus-util.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "hexdecoct.h"
+#include "string-util.h"
+#include "strv.h"
+
+/* Example:
+ *
+ * A: type=signal,sender=foo,interface=bar
+ * B: type=signal,sender=quux,interface=fips
+ * C: type=signal,sender=quux,interface=waldo
+ * D: type=signal,member=test
+ * E: sender=miau
+ * F: type=signal
+ * G: type=signal
+ *
+ * results in this tree:
+ *
+ * BUS_MATCH_ROOT
+ * + BUS_MATCH_MESSAGE_TYPE
+ * | ` BUS_MATCH_VALUE: value == signal
+ * | + DBUS_MATCH_SENDER
+ * | | + BUS_MATCH_VALUE: value == foo
+ * | | | ` DBUS_MATCH_INTERFACE
+ * | | | ` BUS_MATCH_VALUE: value == bar
+ * | | | ` BUS_MATCH_LEAF: A
+ * | | ` BUS_MATCH_VALUE: value == quux
+ * | | ` DBUS_MATCH_INTERFACE
+ * | | | BUS_MATCH_VALUE: value == fips
+ * | | | ` BUS_MATCH_LEAF: B
+ * | | ` BUS_MATCH_VALUE: value == waldo
+ * | | ` BUS_MATCH_LEAF: C
+ * | + DBUS_MATCH_MEMBER
+ * | | ` BUS_MATCH_VALUE: value == test
+ * | | ` BUS_MATCH_LEAF: D
+ * | + BUS_MATCH_LEAF: F
+ * | ` BUS_MATCH_LEAF: G
+ * ` BUS_MATCH_SENDER
+ * ` BUS_MATCH_VALUE: value == miau
+ * ` BUS_MATCH_LEAF: E
+ */
+
+static inline bool BUS_MATCH_IS_COMPARE(enum bus_match_node_type t) {
+ return t >= BUS_MATCH_SENDER && t <= BUS_MATCH_ARG_HAS_LAST;
+}
+
+static inline bool BUS_MATCH_CAN_HASH(enum bus_match_node_type t) {
+ return (t >= BUS_MATCH_MESSAGE_TYPE && t <= BUS_MATCH_PATH) ||
+ (t >= BUS_MATCH_ARG && t <= BUS_MATCH_ARG_LAST) ||
+ (t >= BUS_MATCH_ARG_HAS && t <= BUS_MATCH_ARG_HAS_LAST);
+}
+
+static void bus_match_node_free(struct bus_match_node *node) {
+ assert(node);
+ assert(node->parent);
+ assert(!node->child);
+ assert(node->type != BUS_MATCH_ROOT);
+ assert(node->type < _BUS_MATCH_NODE_TYPE_MAX);
+
+ if (node->parent->child) {
+ /* We are apparently linked into the parent's child
+ * list. Let's remove us from there. */
+ if (node->prev) {
+ assert(node->prev->next == node);
+ node->prev->next = node->next;
+ } else {
+ assert(node->parent->child == node);
+ node->parent->child = node->next;
+ }
+
+ if (node->next)
+ node->next->prev = node->prev;
+ }
+
+ if (node->type == BUS_MATCH_VALUE) {
+ /* We might be in the parent's hash table, so clean
+ * this up */
+
+ if (node->parent->type == BUS_MATCH_MESSAGE_TYPE)
+ hashmap_remove(node->parent->compare.children, UINT_TO_PTR(node->value.u8));
+ else if (BUS_MATCH_CAN_HASH(node->parent->type) && node->value.str)
+ hashmap_remove(node->parent->compare.children, node->value.str);
+
+ free(node->value.str);
+ }
+
+ if (BUS_MATCH_IS_COMPARE(node->type)) {
+ assert(hashmap_isempty(node->compare.children));
+ hashmap_free(node->compare.children);
+ }
+
+ free(node);
+}
+
+static bool bus_match_node_maybe_free(struct bus_match_node *node) {
+ assert(node);
+
+ if (node->type == BUS_MATCH_ROOT)
+ return false;
+
+ if (node->child)
+ return false;
+
+ if (BUS_MATCH_IS_COMPARE(node->type) && !hashmap_isempty(node->compare.children))
+ return true;
+
+ bus_match_node_free(node);
+ return true;
+}
+
+static bool value_node_test(
+ struct bus_match_node *node,
+ enum bus_match_node_type parent_type,
+ uint8_t value_u8,
+ const char *value_str,
+ char **value_strv,
+ sd_bus_message *m) {
+
+ assert(node);
+ assert(node->type == BUS_MATCH_VALUE);
+
+ /* Tests parameters against this value node, doing prefix
+ * magic and stuff. */
+
+ switch (parent_type) {
+
+ case BUS_MATCH_MESSAGE_TYPE:
+ return node->value.u8 == value_u8;
+
+ case BUS_MATCH_SENDER:
+ if (streq_ptr(node->value.str, value_str))
+ return true;
+
+ if (m->creds.mask & SD_BUS_CREDS_WELL_KNOWN_NAMES) {
+ char **i;
+
+ /* on kdbus we have the well known names list
+ * in the credentials, let's make use of that
+ * for an accurate match */
+
+ STRV_FOREACH(i, m->creds.well_known_names)
+ if (streq_ptr(node->value.str, *i))
+ return true;
+
+ } else {
+
+ /* If we don't have kdbus, we don't know the
+ * well-known names of the senders. In that,
+ * let's just hope that dbus-daemon doesn't
+ * send us stuff we didn't want. */
+
+ if (node->value.str[0] != ':' && value_str && value_str[0] == ':')
+ return true;
+ }
+
+ return false;
+
+ case BUS_MATCH_DESTINATION:
+ case BUS_MATCH_INTERFACE:
+ case BUS_MATCH_MEMBER:
+ case BUS_MATCH_PATH:
+ case BUS_MATCH_ARG ... BUS_MATCH_ARG_LAST:
+
+ if (value_str)
+ return streq_ptr(node->value.str, value_str);
+
+ return false;
+
+ case BUS_MATCH_ARG_HAS ... BUS_MATCH_ARG_HAS_LAST: {
+ char **i;
+
+ STRV_FOREACH(i, value_strv)
+ if (streq_ptr(node->value.str, *i))
+ return true;
+
+ return false;
+ }
+
+ case BUS_MATCH_ARG_NAMESPACE ... BUS_MATCH_ARG_NAMESPACE_LAST:
+ if (value_str)
+ return namespace_simple_pattern(node->value.str, value_str);
+
+ return false;
+
+ case BUS_MATCH_PATH_NAMESPACE:
+ return path_simple_pattern(node->value.str, value_str);
+
+ case BUS_MATCH_ARG_PATH ... BUS_MATCH_ARG_PATH_LAST:
+ if (value_str)
+ return path_complex_pattern(node->value.str, value_str);
+
+ return false;
+
+ default:
+ assert_not_reached("Invalid node type");
+ }
+}
+
+static bool value_node_same(
+ struct bus_match_node *node,
+ enum bus_match_node_type parent_type,
+ uint8_t value_u8,
+ const char *value_str) {
+
+ /* Tests parameters against this value node, not doing prefix
+ * magic and stuff, i.e. this one actually compares the match
+ * itself. */
+
+ assert(node);
+ assert(node->type == BUS_MATCH_VALUE);
+
+ switch (parent_type) {
+
+ case BUS_MATCH_MESSAGE_TYPE:
+ return node->value.u8 == value_u8;
+
+ case BUS_MATCH_SENDER:
+ case BUS_MATCH_DESTINATION:
+ case BUS_MATCH_INTERFACE:
+ case BUS_MATCH_MEMBER:
+ case BUS_MATCH_PATH:
+ case BUS_MATCH_ARG ... BUS_MATCH_ARG_LAST:
+ case BUS_MATCH_ARG_HAS ... BUS_MATCH_ARG_HAS_LAST:
+ case BUS_MATCH_ARG_NAMESPACE ... BUS_MATCH_ARG_NAMESPACE_LAST:
+ case BUS_MATCH_PATH_NAMESPACE:
+ case BUS_MATCH_ARG_PATH ... BUS_MATCH_ARG_PATH_LAST:
+ return streq(node->value.str, value_str);
+
+ default:
+ assert_not_reached("Invalid node type");
+ }
+}
+
+int bus_match_run(
+ sd_bus *bus,
+ struct bus_match_node *node,
+ sd_bus_message *m) {
+
+ _cleanup_strv_free_ char **test_strv = NULL;
+ const char *test_str = NULL;
+ uint8_t test_u8 = 0;
+ int r;
+
+ assert(m);
+
+ if (!node)
+ return 0;
+
+ if (bus && bus->match_callbacks_modified)
+ return 0;
+
+ /* Not these special semantics: when traversing the tree we
+ * usually let bus_match_run() when called for a node
+ * recursively invoke bus_match_run(). There's are two
+ * exceptions here though, which are BUS_NODE_ROOT (which
+ * cannot have a sibling), and BUS_NODE_VALUE (whose siblings
+ * are invoked anyway by its parent. */
+
+ switch (node->type) {
+
+ case BUS_MATCH_ROOT:
+
+ /* Run all children. Since we cannot have any siblings
+ * we won't call any. The children of the root node
+ * are compares or leaves, they will automatically
+ * call their siblings. */
+ return bus_match_run(bus, node->child, m);
+
+ case BUS_MATCH_VALUE:
+
+ /* Run all children. We don't execute any siblings, we
+ * assume our caller does that. The children of value
+ * nodes are compares or leaves, they will
+ * automatically call their siblings */
+
+ assert(node->child);
+ return bus_match_run(bus, node->child, m);
+
+ case BUS_MATCH_LEAF:
+
+ if (bus) {
+ if (node->leaf.callback->last_iteration == bus->iteration_counter)
+ return 0;
+
+ node->leaf.callback->last_iteration = bus->iteration_counter;
+ }
+
+ r = sd_bus_message_rewind(m, true);
+ if (r < 0)
+ return r;
+
+ /* Run the callback. And then invoke siblings. */
+ if (node->leaf.callback->callback) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error_buffer = SD_BUS_ERROR_NULL;
+ sd_bus_slot *slot;
+
+ slot = container_of(node->leaf.callback, sd_bus_slot, match_callback);
+ if (bus) {
+ bus->current_slot = sd_bus_slot_ref(slot);
+ bus->current_handler = node->leaf.callback->callback;
+ bus->current_userdata = slot->userdata;
+ }
+ r = node->leaf.callback->callback(m, slot->userdata, &error_buffer);
+ if (bus) {
+ bus->current_userdata = NULL;
+ bus->current_handler = NULL;
+ bus->current_slot = sd_bus_slot_unref(slot);
+ }
+
+ r = bus_maybe_reply_error(m, r, &error_buffer);
+ if (r != 0)
+ return r;
+
+ if (bus && bus->match_callbacks_modified)
+ return 0;
+ }
+
+ return bus_match_run(bus, node->next, m);
+
+ case BUS_MATCH_MESSAGE_TYPE:
+ test_u8 = m->header->type;
+ break;
+
+ case BUS_MATCH_SENDER:
+ test_str = m->sender;
+ /* FIXME: resolve test_str from a well-known to a unique name first */
+ break;
+
+ case BUS_MATCH_DESTINATION:
+ test_str = m->destination;
+ break;
+
+ case BUS_MATCH_INTERFACE:
+ test_str = m->interface;
+ break;
+
+ case BUS_MATCH_MEMBER:
+ test_str = m->member;
+ break;
+
+ case BUS_MATCH_PATH:
+ case BUS_MATCH_PATH_NAMESPACE:
+ test_str = m->path;
+ break;
+
+ case BUS_MATCH_ARG ... BUS_MATCH_ARG_LAST:
+ (void) bus_message_get_arg(m, node->type - BUS_MATCH_ARG, &test_str);
+ break;
+
+ case BUS_MATCH_ARG_PATH ... BUS_MATCH_ARG_PATH_LAST:
+ (void) bus_message_get_arg(m, node->type - BUS_MATCH_ARG_PATH, &test_str);
+ break;
+
+ case BUS_MATCH_ARG_NAMESPACE ... BUS_MATCH_ARG_NAMESPACE_LAST:
+ (void) bus_message_get_arg(m, node->type - BUS_MATCH_ARG_NAMESPACE, &test_str);
+ break;
+
+ case BUS_MATCH_ARG_HAS ... BUS_MATCH_ARG_HAS_LAST:
+ (void) bus_message_get_arg_strv(m, node->type - BUS_MATCH_ARG_HAS, &test_strv);
+ break;
+
+ default:
+ assert_not_reached("Unknown match type.");
+ }
+
+ if (BUS_MATCH_CAN_HASH(node->type)) {
+ struct bus_match_node *found;
+
+ /* Lookup via hash table, nice! So let's jump directly. */
+
+ if (test_str)
+ found = hashmap_get(node->compare.children, test_str);
+ else if (test_strv) {
+ char **i;
+
+ STRV_FOREACH(i, test_strv) {
+ found = hashmap_get(node->compare.children, *i);
+ if (found) {
+ r = bus_match_run(bus, found, m);
+ if (r != 0)
+ return r;
+ }
+ }
+
+ found = NULL;
+ } else if (node->type == BUS_MATCH_MESSAGE_TYPE)
+ found = hashmap_get(node->compare.children, UINT_TO_PTR(test_u8));
+ else
+ found = NULL;
+
+ if (found) {
+ r = bus_match_run(bus, found, m);
+ if (r != 0)
+ return r;
+ }
+ } else {
+ struct bus_match_node *c;
+
+ /* No hash table, so let's iterate manually... */
+
+ for (c = node->child; c; c = c->next) {
+ if (!value_node_test(c, node->type, test_u8, test_str, test_strv, m))
+ continue;
+
+ r = bus_match_run(bus, c, m);
+ if (r != 0)
+ return r;
+ }
+ }
+
+ if (bus && bus->match_callbacks_modified)
+ return 0;
+
+ /* And now, let's invoke our siblings */
+ return bus_match_run(bus, node->next, m);
+}
+
+static int bus_match_add_compare_value(
+ struct bus_match_node *where,
+ enum bus_match_node_type t,
+ uint8_t value_u8,
+ const char *value_str,
+ struct bus_match_node **ret) {
+
+ struct bus_match_node *c = NULL, *n = NULL;
+ int r;
+
+ assert(where);
+ assert(where->type == BUS_MATCH_ROOT || where->type == BUS_MATCH_VALUE);
+ assert(BUS_MATCH_IS_COMPARE(t));
+ assert(ret);
+
+ for (c = where->child; c && c->type != t; c = c->next)
+ ;
+
+ if (c) {
+ /* Comparison node already exists? Then let's see if
+ * the value node exists too. */
+
+ if (t == BUS_MATCH_MESSAGE_TYPE)
+ n = hashmap_get(c->compare.children, UINT_TO_PTR(value_u8));
+ else if (BUS_MATCH_CAN_HASH(t))
+ n = hashmap_get(c->compare.children, value_str);
+ else {
+ for (n = c->child; n && !value_node_same(n, t, value_u8, value_str); n = n->next)
+ ;
+ }
+
+ if (n) {
+ *ret = n;
+ return 0;
+ }
+ } else {
+ /* Comparison node, doesn't exist yet? Then let's
+ * create it. */
+
+ c = new0(struct bus_match_node, 1);
+ if (!c) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ c->type = t;
+ c->parent = where;
+ c->next = where->child;
+ if (c->next)
+ c->next->prev = c;
+ where->child = c;
+
+ if (t == BUS_MATCH_MESSAGE_TYPE) {
+ c->compare.children = hashmap_new(NULL);
+ if (!c->compare.children) {
+ r = -ENOMEM;
+ goto fail;
+ }
+ } else if (BUS_MATCH_CAN_HASH(t)) {
+ c->compare.children = hashmap_new(&string_hash_ops);
+ if (!c->compare.children) {
+ r = -ENOMEM;
+ goto fail;
+ }
+ }
+ }
+
+ n = new0(struct bus_match_node, 1);
+ if (!n) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ n->type = BUS_MATCH_VALUE;
+ n->value.u8 = value_u8;
+ if (value_str) {
+ n->value.str = strdup(value_str);
+ if (!n->value.str) {
+ r = -ENOMEM;
+ goto fail;
+ }
+ }
+
+ n->parent = c;
+ if (c->compare.children) {
+
+ if (t == BUS_MATCH_MESSAGE_TYPE)
+ r = hashmap_put(c->compare.children, UINT_TO_PTR(value_u8), n);
+ else
+ r = hashmap_put(c->compare.children, n->value.str, n);
+
+ if (r < 0)
+ goto fail;
+ } else {
+ n->next = c->child;
+ if (n->next)
+ n->next->prev = n;
+ c->child = n;
+ }
+
+ *ret = n;
+ return 1;
+
+fail:
+ if (c)
+ bus_match_node_maybe_free(c);
+
+ if (n) {
+ free(n->value.str);
+ free(n);
+ }
+
+ return r;
+}
+
+static int bus_match_find_compare_value(
+ struct bus_match_node *where,
+ enum bus_match_node_type t,
+ uint8_t value_u8,
+ const char *value_str,
+ struct bus_match_node **ret) {
+
+ struct bus_match_node *c, *n;
+
+ assert(where);
+ assert(where->type == BUS_MATCH_ROOT || where->type == BUS_MATCH_VALUE);
+ assert(BUS_MATCH_IS_COMPARE(t));
+ assert(ret);
+
+ for (c = where->child; c && c->type != t; c = c->next)
+ ;
+
+ if (!c)
+ return 0;
+
+ if (t == BUS_MATCH_MESSAGE_TYPE)
+ n = hashmap_get(c->compare.children, UINT_TO_PTR(value_u8));
+ else if (BUS_MATCH_CAN_HASH(t))
+ n = hashmap_get(c->compare.children, value_str);
+ else {
+ for (n = c->child; n && !value_node_same(n, t, value_u8, value_str); n = n->next)
+ ;
+ }
+
+ if (n) {
+ *ret = n;
+ return 1;
+ }
+
+ return 0;
+}
+
+static int bus_match_add_leaf(
+ struct bus_match_node *where,
+ struct match_callback *callback) {
+
+ struct bus_match_node *n;
+
+ assert(where);
+ assert(where->type == BUS_MATCH_ROOT || where->type == BUS_MATCH_VALUE);
+ assert(callback);
+
+ n = new0(struct bus_match_node, 1);
+ if (!n)
+ return -ENOMEM;
+
+ n->type = BUS_MATCH_LEAF;
+ n->parent = where;
+ n->next = where->child;
+ if (n->next)
+ n->next->prev = n;
+
+ n->leaf.callback = callback;
+ callback->match_node = n;
+
+ where->child = n;
+
+ return 1;
+}
+
+static int bus_match_find_leaf(
+ struct bus_match_node *where,
+ sd_bus_message_handler_t callback,
+ void *userdata,
+ struct bus_match_node **ret) {
+
+ struct bus_match_node *c;
+
+ assert(where);
+ assert(where->type == BUS_MATCH_ROOT || where->type == BUS_MATCH_VALUE);
+ assert(ret);
+
+ for (c = where->child; c; c = c->next) {
+ sd_bus_slot *s;
+
+ s = container_of(c->leaf.callback, sd_bus_slot, match_callback);
+
+ if (c->type == BUS_MATCH_LEAF &&
+ c->leaf.callback->callback == callback &&
+ s->userdata == userdata) {
+ *ret = c;
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+enum bus_match_node_type bus_match_node_type_from_string(const char *k, size_t n) {
+ assert(k);
+
+ if (n == 4 && startswith(k, "type"))
+ return BUS_MATCH_MESSAGE_TYPE;
+ if (n == 6 && startswith(k, "sender"))
+ return BUS_MATCH_SENDER;
+ if (n == 11 && startswith(k, "destination"))
+ return BUS_MATCH_DESTINATION;
+ if (n == 9 && startswith(k, "interface"))
+ return BUS_MATCH_INTERFACE;
+ if (n == 6 && startswith(k, "member"))
+ return BUS_MATCH_MEMBER;
+ if (n == 4 && startswith(k, "path"))
+ return BUS_MATCH_PATH;
+ if (n == 14 && startswith(k, "path_namespace"))
+ return BUS_MATCH_PATH_NAMESPACE;
+
+ if (n == 4 && startswith(k, "arg")) {
+ int j;
+
+ j = undecchar(k[3]);
+ if (j < 0)
+ return -EINVAL;
+
+ return BUS_MATCH_ARG + j;
+ }
+
+ if (n == 5 && startswith(k, "arg")) {
+ int a, b;
+ enum bus_match_node_type t;
+
+ a = undecchar(k[3]);
+ b = undecchar(k[4]);
+ if (a <= 0 || b < 0)
+ return -EINVAL;
+
+ t = BUS_MATCH_ARG + a * 10 + b;
+ if (t > BUS_MATCH_ARG_LAST)
+ return -EINVAL;
+
+ return t;
+ }
+
+ if (n == 8 && startswith(k, "arg") && startswith(k + 4, "path")) {
+ int j;
+
+ j = undecchar(k[3]);
+ if (j < 0)
+ return -EINVAL;
+
+ return BUS_MATCH_ARG_PATH + j;
+ }
+
+ if (n == 9 && startswith(k, "arg") && startswith(k + 5, "path")) {
+ enum bus_match_node_type t;
+ int a, b;
+
+ a = undecchar(k[3]);
+ b = undecchar(k[4]);
+ if (a <= 0 || b < 0)
+ return -EINVAL;
+
+ t = BUS_MATCH_ARG_PATH + a * 10 + b;
+ if (t > BUS_MATCH_ARG_PATH_LAST)
+ return -EINVAL;
+
+ return t;
+ }
+
+ if (n == 13 && startswith(k, "arg") && startswith(k + 4, "namespace")) {
+ int j;
+
+ j = undecchar(k[3]);
+ if (j < 0)
+ return -EINVAL;
+
+ return BUS_MATCH_ARG_NAMESPACE + j;
+ }
+
+ if (n == 14 && startswith(k, "arg") && startswith(k + 5, "namespace")) {
+ enum bus_match_node_type t;
+ int a, b;
+
+ a = undecchar(k[3]);
+ b = undecchar(k[4]);
+ if (a <= 0 || b < 0)
+ return -EINVAL;
+
+ t = BUS_MATCH_ARG_NAMESPACE + a * 10 + b;
+ if (t > BUS_MATCH_ARG_NAMESPACE_LAST)
+ return -EINVAL;
+
+ return t;
+ }
+
+ if (n == 7 && startswith(k, "arg") && startswith(k + 4, "has")) {
+ int j;
+
+ j = undecchar(k[3]);
+ if (j < 0)
+ return -EINVAL;
+
+ return BUS_MATCH_ARG_HAS + j;
+ }
+
+ if (n == 8 && startswith(k, "arg") && startswith(k + 5, "has")) {
+ enum bus_match_node_type t;
+ int a, b;
+
+ a = undecchar(k[3]);
+ b = undecchar(k[4]);
+ if (a <= 0 || b < 0)
+ return -EINVAL;
+
+ t = BUS_MATCH_ARG_HAS + a * 10 + b;
+ if (t > BUS_MATCH_ARG_HAS_LAST)
+ return -EINVAL;
+
+ return t;
+ }
+
+ return -EINVAL;
+}
+
+static int match_component_compare(const void *a, const void *b) {
+ const struct bus_match_component *x = a, *y = b;
+
+ if (x->type < y->type)
+ return -1;
+ if (x->type > y->type)
+ return 1;
+
+ return 0;
+}
+
+void bus_match_parse_free(struct bus_match_component *components, unsigned n_components) {
+ unsigned i;
+
+ for (i = 0; i < n_components; i++)
+ free(components[i].value_str);
+
+ free(components);
+}
+
+int bus_match_parse(
+ const char *match,
+ struct bus_match_component **_components,
+ unsigned *_n_components) {
+
+ const char *p = match;
+ struct bus_match_component *components = NULL;
+ size_t components_allocated = 0;
+ unsigned n_components = 0, i;
+ _cleanup_free_ char *value = NULL;
+ int r;
+
+ assert(match);
+ assert(_components);
+ assert(_n_components);
+
+ while (*p != 0) {
+ const char *eq, *q;
+ enum bus_match_node_type t;
+ unsigned j = 0;
+ size_t value_allocated = 0;
+ bool escaped = false, quoted;
+ uint8_t u;
+
+ /* Avahi's match rules appear to include whitespace, skip over it */
+ p += strspn(p, " ");
+
+ eq = strchr(p, '=');
+ if (!eq)
+ return -EINVAL;
+
+ t = bus_match_node_type_from_string(p, eq - p);
+ if (t < 0)
+ return -EINVAL;
+
+ quoted = eq[1] == '\'';
+
+ for (q = eq + 1 + quoted;; q++) {
+
+ if (*q == 0) {
+
+ if (quoted) {
+ r = -EINVAL;
+ goto fail;
+ } else {
+ if (value)
+ value[j] = 0;
+ break;
+ }
+ }
+
+ if (!escaped) {
+ if (*q == '\\') {
+ escaped = true;
+ continue;
+ }
+
+ if (quoted) {
+ if (*q == '\'') {
+ if (value)
+ value[j] = 0;
+ break;
+ }
+ } else {
+ if (*q == ',') {
+ if (value)
+ value[j] = 0;
+
+ break;
+ }
+ }
+ }
+
+ if (!GREEDY_REALLOC(value, value_allocated, j + 2)) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ value[j++] = *q;
+ escaped = false;
+ }
+
+ if (!value) {
+ value = strdup("");
+ if (!value) {
+ r = -ENOMEM;
+ goto fail;
+ }
+ }
+
+ if (t == BUS_MATCH_MESSAGE_TYPE) {
+ r = bus_message_type_from_string(value, &u);
+ if (r < 0)
+ goto fail;
+
+ value = mfree(value);
+ } else
+ u = 0;
+
+ if (!GREEDY_REALLOC(components, components_allocated, n_components + 1)) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ components[n_components].type = t;
+ components[n_components].value_str = value;
+ components[n_components].value_u8 = u;
+ n_components++;
+
+ value = NULL;
+
+ if (q[quoted] == 0)
+ break;
+
+ if (q[quoted] != ',') {
+ r = -EINVAL;
+ goto fail;
+ }
+
+ p = q + 1 + quoted;
+ }
+
+ /* Order the whole thing, so that we always generate the same tree */
+ qsort_safe(components, n_components, sizeof(struct bus_match_component), match_component_compare);
+
+ /* Check for duplicates */
+ for (i = 0; i+1 < n_components; i++)
+ if (components[i].type == components[i+1].type) {
+ r = -EINVAL;
+ goto fail;
+ }
+
+ *_components = components;
+ *_n_components = n_components;
+
+ return 0;
+
+fail:
+ bus_match_parse_free(components, n_components);
+ return r;
+}
+
+char *bus_match_to_string(struct bus_match_component *components, unsigned n_components) {
+ _cleanup_fclose_ FILE *f = NULL;
+ char *buffer = NULL;
+ size_t size = 0;
+ unsigned i;
+ int r;
+
+ if (n_components <= 0)
+ return strdup("");
+
+ assert(components);
+
+ f = open_memstream(&buffer, &size);
+ if (!f)
+ return NULL;
+
+ for (i = 0; i < n_components; i++) {
+ char buf[32];
+
+ if (i != 0)
+ fputc(',', f);
+
+ fputs(bus_match_node_type_to_string(components[i].type, buf, sizeof(buf)), f);
+ fputc('=', f);
+ fputc('\'', f);
+
+ if (components[i].type == BUS_MATCH_MESSAGE_TYPE)
+ fputs(bus_message_type_to_string(components[i].value_u8), f);
+ else
+ fputs(components[i].value_str, f);
+
+ fputc('\'', f);
+ }
+
+ r = fflush_and_check(f);
+ if (r < 0)
+ return NULL;
+
+ return buffer;
+}
+
+int bus_match_add(
+ struct bus_match_node *root,
+ struct bus_match_component *components,
+ unsigned n_components,
+ struct match_callback *callback) {
+
+ unsigned i;
+ struct bus_match_node *n;
+ int r;
+
+ assert(root);
+ assert(callback);
+
+ n = root;
+ for (i = 0; i < n_components; i++) {
+ r = bus_match_add_compare_value(
+ n, components[i].type,
+ components[i].value_u8, components[i].value_str, &n);
+ if (r < 0)
+ return r;
+ }
+
+ return bus_match_add_leaf(n, callback);
+}
+
+int bus_match_remove(
+ struct bus_match_node *root,
+ struct match_callback *callback) {
+
+ struct bus_match_node *node, *pp;
+
+ assert(root);
+ assert(callback);
+
+ node = callback->match_node;
+ if (!node)
+ return 0;
+
+ assert(node->type == BUS_MATCH_LEAF);
+
+ callback->match_node = NULL;
+
+ /* Free the leaf */
+ pp = node->parent;
+ bus_match_node_free(node);
+
+ /* Prune the tree above */
+ while (pp) {
+ node = pp;
+ pp = node->parent;
+
+ if (!bus_match_node_maybe_free(node))
+ break;
+ }
+
+ return 1;
+}
+
+int bus_match_find(
+ struct bus_match_node *root,
+ struct bus_match_component *components,
+ unsigned n_components,
+ sd_bus_message_handler_t callback,
+ void *userdata,
+ struct match_callback **ret) {
+
+ struct bus_match_node *n, **gc;
+ unsigned i;
+ int r;
+
+ assert(root);
+ assert(ret);
+
+ gc = newa(struct bus_match_node*, n_components);
+
+ n = root;
+ for (i = 0; i < n_components; i++) {
+ r = bus_match_find_compare_value(
+ n, components[i].type,
+ components[i].value_u8, components[i].value_str,
+ &n);
+ if (r <= 0)
+ return r;
+
+ gc[i] = n;
+ }
+
+ r = bus_match_find_leaf(n, callback, userdata, &n);
+ if (r <= 0)
+ return r;
+
+ *ret = n->leaf.callback;
+ return 1;
+}
+
+void bus_match_free(struct bus_match_node *node) {
+ struct bus_match_node *c;
+
+ if (!node)
+ return;
+
+ if (BUS_MATCH_CAN_HASH(node->type)) {
+ Iterator i;
+
+ HASHMAP_FOREACH(c, node->compare.children, i)
+ bus_match_free(c);
+
+ assert(hashmap_isempty(node->compare.children));
+ }
+
+ while ((c = node->child))
+ bus_match_free(c);
+
+ if (node->type != BUS_MATCH_ROOT)
+ bus_match_node_free(node);
+}
+
+const char* bus_match_node_type_to_string(enum bus_match_node_type t, char buf[], size_t l) {
+ switch (t) {
+
+ case BUS_MATCH_ROOT:
+ return "root";
+
+ case BUS_MATCH_VALUE:
+ return "value";
+
+ case BUS_MATCH_LEAF:
+ return "leaf";
+
+ case BUS_MATCH_MESSAGE_TYPE:
+ return "type";
+
+ case BUS_MATCH_SENDER:
+ return "sender";
+
+ case BUS_MATCH_DESTINATION:
+ return "destination";
+
+ case BUS_MATCH_INTERFACE:
+ return "interface";
+
+ case BUS_MATCH_MEMBER:
+ return "member";
+
+ case BUS_MATCH_PATH:
+ return "path";
+
+ case BUS_MATCH_PATH_NAMESPACE:
+ return "path_namespace";
+
+ case BUS_MATCH_ARG ... BUS_MATCH_ARG_LAST:
+ snprintf(buf, l, "arg%i", t - BUS_MATCH_ARG);
+ return buf;
+
+ case BUS_MATCH_ARG_PATH ... BUS_MATCH_ARG_PATH_LAST:
+ snprintf(buf, l, "arg%ipath", t - BUS_MATCH_ARG_PATH);
+ return buf;
+
+ case BUS_MATCH_ARG_NAMESPACE ... BUS_MATCH_ARG_NAMESPACE_LAST:
+ snprintf(buf, l, "arg%inamespace", t - BUS_MATCH_ARG_NAMESPACE);
+ return buf;
+
+ case BUS_MATCH_ARG_HAS ... BUS_MATCH_ARG_HAS_LAST:
+ snprintf(buf, l, "arg%ihas", t - BUS_MATCH_ARG_HAS);
+ return buf;
+
+ default:
+ return NULL;
+ }
+}
+
+void bus_match_dump(struct bus_match_node *node, unsigned level) {
+ struct bus_match_node *c;
+ _cleanup_free_ char *pfx = NULL;
+ char buf[32];
+
+ if (!node)
+ return;
+
+ pfx = strrep(" ", level);
+ printf("%s[%s]", strempty(pfx), bus_match_node_type_to_string(node->type, buf, sizeof(buf)));
+
+ if (node->type == BUS_MATCH_VALUE) {
+ if (node->parent->type == BUS_MATCH_MESSAGE_TYPE)
+ printf(" <%u>\n", node->value.u8);
+ else
+ printf(" <%s>\n", node->value.str);
+ } else if (node->type == BUS_MATCH_ROOT)
+ puts(" root");
+ else if (node->type == BUS_MATCH_LEAF)
+ printf(" %p/%p\n", node->leaf.callback->callback, container_of(node->leaf.callback, sd_bus_slot, match_callback)->userdata);
+ else
+ putchar('\n');
+
+ if (BUS_MATCH_CAN_HASH(node->type)) {
+ Iterator i;
+
+ HASHMAP_FOREACH(c, node->compare.children, i)
+ bus_match_dump(c, level + 1);
+ }
+
+ for (c = node->child; c; c = c->next)
+ bus_match_dump(c, level + 1);
+}
+
+enum bus_match_scope bus_match_get_scope(const struct bus_match_component *components, unsigned n_components) {
+ bool found_driver = false;
+ unsigned i;
+
+ if (n_components <= 0)
+ return BUS_MATCH_GENERIC;
+
+ assert(components);
+
+ /* Checks whether the specified match can only match the
+ * pseudo-service for local messages, which we detect by
+ * sender, interface or path. If a match is not restricted to
+ * local messages, then we check if it only matches on the
+ * driver. */
+
+ for (i = 0; i < n_components; i++) {
+ const struct bus_match_component *c = components + i;
+
+ if (c->type == BUS_MATCH_SENDER) {
+ if (streq_ptr(c->value_str, "org.freedesktop.DBus.Local"))
+ return BUS_MATCH_LOCAL;
+
+ if (streq_ptr(c->value_str, "org.freedesktop.DBus"))
+ found_driver = true;
+ }
+
+ if (c->type == BUS_MATCH_INTERFACE && streq_ptr(c->value_str, "org.freedesktop.DBus.Local"))
+ return BUS_MATCH_LOCAL;
+
+ if (c->type == BUS_MATCH_PATH && streq_ptr(c->value_str, "/org/freedesktop/DBus/Local"))
+ return BUS_MATCH_LOCAL;
+ }
+
+ return found_driver ? BUS_MATCH_DRIVER : BUS_MATCH_GENERIC;
+
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-match.h b/src/libsystemd/libsystemd-internal/sd-bus/bus-match.h
new file mode 100644
index 0000000000..3f71720185
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-match.h
@@ -0,0 +1,100 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <systemd/sd-bus.h>
+
+#include "hashmap.h"
+
+enum bus_match_node_type {
+ BUS_MATCH_ROOT,
+ BUS_MATCH_VALUE,
+ BUS_MATCH_LEAF,
+
+ /* The following are all different kinds of compare nodes */
+ BUS_MATCH_SENDER,
+ BUS_MATCH_MESSAGE_TYPE,
+ BUS_MATCH_DESTINATION,
+ BUS_MATCH_INTERFACE,
+ BUS_MATCH_MEMBER,
+ BUS_MATCH_PATH,
+ BUS_MATCH_PATH_NAMESPACE,
+ BUS_MATCH_ARG,
+ BUS_MATCH_ARG_LAST = BUS_MATCH_ARG + 63,
+ BUS_MATCH_ARG_PATH,
+ BUS_MATCH_ARG_PATH_LAST = BUS_MATCH_ARG_PATH + 63,
+ BUS_MATCH_ARG_NAMESPACE,
+ BUS_MATCH_ARG_NAMESPACE_LAST = BUS_MATCH_ARG_NAMESPACE + 63,
+ BUS_MATCH_ARG_HAS,
+ BUS_MATCH_ARG_HAS_LAST = BUS_MATCH_ARG_HAS + 63,
+ _BUS_MATCH_NODE_TYPE_MAX,
+ _BUS_MATCH_NODE_TYPE_INVALID = -1
+};
+
+struct bus_match_node {
+ enum bus_match_node_type type;
+ struct bus_match_node *parent, *next, *prev, *child;
+
+ union {
+ struct {
+ char *str;
+ uint8_t u8;
+ } value;
+ struct {
+ struct match_callback *callback;
+ } leaf;
+ struct {
+ /* If this is set, then the child is NULL */
+ Hashmap *children;
+ } compare;
+ };
+};
+
+struct bus_match_component {
+ enum bus_match_node_type type;
+ uint8_t value_u8;
+ char *value_str;
+};
+
+enum bus_match_scope {
+ BUS_MATCH_GENERIC,
+ BUS_MATCH_LOCAL,
+ BUS_MATCH_DRIVER,
+};
+
+int bus_match_run(sd_bus *bus, struct bus_match_node *root, sd_bus_message *m);
+
+int bus_match_add(struct bus_match_node *root, struct bus_match_component *components, unsigned n_components, struct match_callback *callback);
+int bus_match_remove(struct bus_match_node *root, struct match_callback *callback);
+
+int bus_match_find(struct bus_match_node *root, struct bus_match_component *components, unsigned n_components, sd_bus_message_handler_t callback, void *userdata, struct match_callback **ret);
+
+void bus_match_free(struct bus_match_node *node);
+
+void bus_match_dump(struct bus_match_node *node, unsigned level);
+
+const char* bus_match_node_type_to_string(enum bus_match_node_type t, char buf[], size_t l);
+enum bus_match_node_type bus_match_node_type_from_string(const char *k, size_t n);
+
+int bus_match_parse(const char *match, struct bus_match_component **_components, unsigned *_n_components);
+void bus_match_parse_free(struct bus_match_component *components, unsigned n_components);
+char *bus_match_to_string(struct bus_match_component *components, unsigned n_components);
+
+enum bus_match_scope bus_match_get_scope(const struct bus_match_component *components, unsigned n_components);
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-message.c b/src/libsystemd/libsystemd-internal/sd-bus/bus-message.c
new file mode 100644
index 0000000000..a9359c1528
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-message.c
@@ -0,0 +1,5939 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+
+#include <systemd/sd-bus.h>
+
+#include "alloc-util.h"
+#include "bus-gvariant.h"
+#include "bus-internal.h"
+#include "bus-message.h"
+#include "bus-signature.h"
+#include "bus-type.h"
+#include "bus-util.h"
+#include "fd-util.h"
+#include "io-util.h"
+#include "memfd-util.h"
+#include "string-util.h"
+#include "strv.h"
+#include "time-util.h"
+#include "utf8.h"
+#include "util.h"
+
+static int message_append_basic(sd_bus_message *m, char type, const void *p, const void **stored);
+
+static void *adjust_pointer(const void *p, void *old_base, size_t sz, void *new_base) {
+
+ if (p == NULL)
+ return NULL;
+
+ if (old_base == new_base)
+ return (void*) p;
+
+ if ((uint8_t*) p < (uint8_t*) old_base)
+ return (void*) p;
+
+ if ((uint8_t*) p >= (uint8_t*) old_base + sz)
+ return (void*) p;
+
+ return (uint8_t*) new_base + ((uint8_t*) p - (uint8_t*) old_base);
+}
+
+static void message_free_part(sd_bus_message *m, struct bus_body_part *part) {
+ assert(m);
+ assert(part);
+
+ if (part->memfd >= 0) {
+ /* If we can reuse the memfd, try that. For that it
+ * can't be sealed yet. */
+
+ if (!part->sealed) {
+ assert(part->memfd_offset == 0);
+ assert(part->data == part->mmap_begin);
+ bus_kernel_push_memfd(m->bus, part->memfd, part->data, part->mapped, part->allocated);
+ } else {
+ if (part->mapped > 0)
+ assert_se(munmap(part->mmap_begin, part->mapped) == 0);
+
+ safe_close(part->memfd);
+ }
+
+ } else if (part->munmap_this)
+ munmap(part->mmap_begin, part->mapped);
+ else if (part->free_this)
+ free(part->data);
+
+ if (part != &m->body)
+ free(part);
+}
+
+static void message_reset_parts(sd_bus_message *m) {
+ struct bus_body_part *part;
+
+ assert(m);
+
+ part = &m->body;
+ while (m->n_body_parts > 0) {
+ struct bus_body_part *next = part->next;
+ message_free_part(m, part);
+ part = next;
+ m->n_body_parts--;
+ }
+
+ m->body_end = NULL;
+
+ m->cached_rindex_part = NULL;
+ m->cached_rindex_part_begin = 0;
+}
+
+static void message_reset_containers(sd_bus_message *m) {
+ unsigned i;
+
+ assert(m);
+
+ for (i = 0; i < m->n_containers; i++) {
+ free(m->containers[i].signature);
+ free(m->containers[i].offsets);
+ }
+
+ m->containers = mfree(m->containers);
+
+ m->n_containers = m->containers_allocated = 0;
+ m->root_container.index = 0;
+}
+
+static void message_free(sd_bus_message *m) {
+ assert(m);
+
+ if (m->free_header)
+ free(m->header);
+
+ message_reset_parts(m);
+
+ if (m->release_kdbus)
+ bus_kernel_cmd_free(m->bus, (uint8_t *) m->kdbus - (uint8_t *) m->bus->kdbus_buffer);
+
+ if (m->free_kdbus)
+ free(m->kdbus);
+
+ sd_bus_unref(m->bus);
+
+ if (m->free_fds) {
+ close_many(m->fds, m->n_fds);
+ free(m->fds);
+ }
+
+ if (m->iovec != m->iovec_fixed)
+ free(m->iovec);
+
+ m->destination_ptr = mfree(m->destination_ptr);
+ message_reset_containers(m);
+ free(m->root_container.signature);
+ free(m->root_container.offsets);
+
+ free(m->root_container.peeked_signature);
+
+ bus_creds_done(&m->creds);
+ free(m);
+}
+
+static void *message_extend_fields(sd_bus_message *m, size_t align, size_t sz, bool add_offset) {
+ void *op, *np;
+ size_t old_size, new_size, start;
+
+ assert(m);
+
+ if (m->poisoned)
+ return NULL;
+
+ old_size = sizeof(struct bus_header) + m->fields_size;
+ start = ALIGN_TO(old_size, align);
+ new_size = start + sz;
+
+ if (new_size < start ||
+ new_size > (size_t) ((uint32_t) -1))
+ goto poison;
+
+ if (old_size == new_size)
+ return (uint8_t*) m->header + old_size;
+
+ if (m->free_header) {
+ np = realloc(m->header, ALIGN8(new_size));
+ if (!np)
+ goto poison;
+ } else {
+ /* Initially, the header is allocated as part of of
+ * the sd_bus_message itself, let's replace it by
+ * dynamic data */
+
+ np = malloc(ALIGN8(new_size));
+ if (!np)
+ goto poison;
+
+ memcpy(np, m->header, sizeof(struct bus_header));
+ }
+
+ /* Zero out padding */
+ if (start > old_size)
+ memzero((uint8_t*) np + old_size, start - old_size);
+
+ op = m->header;
+ m->header = np;
+ m->fields_size = new_size - sizeof(struct bus_header);
+
+ /* Adjust quick access pointers */
+ m->path = adjust_pointer(m->path, op, old_size, m->header);
+ m->interface = adjust_pointer(m->interface, op, old_size, m->header);
+ m->member = adjust_pointer(m->member, op, old_size, m->header);
+ m->destination = adjust_pointer(m->destination, op, old_size, m->header);
+ m->sender = adjust_pointer(m->sender, op, old_size, m->header);
+ m->error.name = adjust_pointer(m->error.name, op, old_size, m->header);
+
+ m->free_header = true;
+
+ if (add_offset) {
+ if (m->n_header_offsets >= ELEMENTSOF(m->header_offsets))
+ goto poison;
+
+ m->header_offsets[m->n_header_offsets++] = new_size - sizeof(struct bus_header);
+ }
+
+ return (uint8_t*) np + start;
+
+poison:
+ m->poisoned = true;
+ return NULL;
+}
+
+static int message_append_field_string(
+ sd_bus_message *m,
+ uint64_t h,
+ char type,
+ const char *s,
+ const char **ret) {
+
+ size_t l;
+ uint8_t *p;
+
+ assert(m);
+
+ /* dbus1 only allows 8bit header field ids */
+ if (h > 0xFF)
+ return -EINVAL;
+
+ /* dbus1 doesn't allow strings over 32bit, let's enforce this
+ * globally, to not risk convertability */
+ l = strlen(s);
+ if (l > (size_t) (uint32_t) -1)
+ return -EINVAL;
+
+ /* Signature "(yv)" where the variant contains "s" */
+
+ if (BUS_MESSAGE_IS_GVARIANT(m)) {
+
+ /* (field id 64bit, ((string + NUL) + NUL + signature string 's') */
+ p = message_extend_fields(m, 8, 8 + l + 1 + 1 + 1, true);
+ if (!p)
+ return -ENOMEM;
+
+ *((uint64_t*) p) = h;
+ memcpy(p+8, s, l);
+ p[8+l] = 0;
+ p[8+l+1] = 0;
+ p[8+l+2] = type;
+
+ if (ret)
+ *ret = (char*) p + 8;
+
+ } else {
+ /* (field id byte + (signature length + signature 's' + NUL) + (string length + string + NUL)) */
+ p = message_extend_fields(m, 8, 4 + 4 + l + 1, false);
+ if (!p)
+ return -ENOMEM;
+
+ p[0] = (uint8_t) h;
+ p[1] = 1;
+ p[2] = type;
+ p[3] = 0;
+
+ ((uint32_t*) p)[1] = l;
+ memcpy(p + 8, s, l + 1);
+
+ if (ret)
+ *ret = (char*) p + 8;
+ }
+
+ return 0;
+}
+
+static int message_append_field_signature(
+ sd_bus_message *m,
+ uint64_t h,
+ const char *s,
+ const char **ret) {
+
+ size_t l;
+ uint8_t *p;
+
+ assert(m);
+
+ /* dbus1 only allows 8bit header field ids */
+ if (h > 0xFF)
+ return -EINVAL;
+
+ /* dbus1 doesn't allow signatures over 8bit, let's enforce
+ * this globally, to not risk convertability */
+ l = strlen(s);
+ if (l > 255)
+ return -EINVAL;
+
+ /* Signature "(yv)" where the variant contains "g" */
+
+ if (BUS_MESSAGE_IS_GVARIANT(m))
+ /* For gvariant the serialization is the same as for normal strings */
+ return message_append_field_string(m, h, 'g', s, ret);
+ else {
+ /* (field id byte + (signature length + signature 'g' + NUL) + (string length + string + NUL)) */
+ p = message_extend_fields(m, 8, 4 + 1 + l + 1, false);
+ if (!p)
+ return -ENOMEM;
+
+ p[0] = (uint8_t) h;
+ p[1] = 1;
+ p[2] = SD_BUS_TYPE_SIGNATURE;
+ p[3] = 0;
+ p[4] = l;
+ memcpy(p + 5, s, l + 1);
+
+ if (ret)
+ *ret = (const char*) p + 5;
+ }
+
+ return 0;
+}
+
+static int message_append_field_uint32(sd_bus_message *m, uint64_t h, uint32_t x) {
+ uint8_t *p;
+
+ assert(m);
+
+ /* dbus1 only allows 8bit header field ids */
+ if (h > 0xFF)
+ return -EINVAL;
+
+ if (BUS_MESSAGE_IS_GVARIANT(m)) {
+ /* (field id 64bit + ((value + NUL + signature string 'u') */
+
+ p = message_extend_fields(m, 8, 8 + 4 + 1 + 1, true);
+ if (!p)
+ return -ENOMEM;
+
+ *((uint64_t*) p) = h;
+ *((uint32_t*) (p + 8)) = x;
+ p[12] = 0;
+ p[13] = 'u';
+ } else {
+ /* (field id byte + (signature length + signature 'u' + NUL) + value) */
+ p = message_extend_fields(m, 8, 4 + 4, false);
+ if (!p)
+ return -ENOMEM;
+
+ p[0] = (uint8_t) h;
+ p[1] = 1;
+ p[2] = 'u';
+ p[3] = 0;
+
+ ((uint32_t*) p)[1] = x;
+ }
+
+ return 0;
+}
+
+static int message_append_field_uint64(sd_bus_message *m, uint64_t h, uint64_t x) {
+ uint8_t *p;
+
+ assert(m);
+
+ /* dbus1 only allows 8bit header field ids */
+ if (h > 0xFF)
+ return -EINVAL;
+
+ if (BUS_MESSAGE_IS_GVARIANT(m)) {
+ /* (field id 64bit + ((value + NUL + signature string 't') */
+
+ p = message_extend_fields(m, 8, 8 + 8 + 1 + 1, true);
+ if (!p)
+ return -ENOMEM;
+
+ *((uint64_t*) p) = h;
+ *((uint64_t*) (p + 8)) = x;
+ p[16] = 0;
+ p[17] = 't';
+ } else {
+ /* (field id byte + (signature length + signature 't' + NUL) + 4 byte padding + value) */
+ p = message_extend_fields(m, 8, 4 + 4 + 8, false);
+ if (!p)
+ return -ENOMEM;
+
+ p[0] = (uint8_t) h;
+ p[1] = 1;
+ p[2] = 't';
+ p[3] = 0;
+ p[4] = 0;
+ p[5] = 0;
+ p[6] = 0;
+ p[7] = 0;
+
+ ((uint64_t*) p)[1] = x;
+ }
+
+ return 0;
+}
+
+static int message_append_reply_cookie(sd_bus_message *m, uint64_t cookie) {
+ assert(m);
+
+ if (BUS_MESSAGE_IS_GVARIANT(m))
+ return message_append_field_uint64(m, BUS_MESSAGE_HEADER_REPLY_SERIAL, cookie);
+ else {
+ /* 64bit cookies are not supported on dbus1 */
+ if (cookie > 0xffffffffUL)
+ return -EOPNOTSUPP;
+
+ return message_append_field_uint32(m, BUS_MESSAGE_HEADER_REPLY_SERIAL, (uint32_t) cookie);
+ }
+}
+
+int bus_message_from_header(
+ sd_bus *bus,
+ void *header,
+ size_t header_accessible,
+ void *footer,
+ size_t footer_accessible,
+ size_t message_size,
+ int *fds,
+ unsigned n_fds,
+ const char *label,
+ size_t extra,
+ sd_bus_message **ret) {
+
+ _cleanup_free_ sd_bus_message *m = NULL;
+ struct bus_header *h;
+ size_t a, label_sz;
+
+ assert(bus);
+ assert(header || header_accessible <= 0);
+ assert(footer || footer_accessible <= 0);
+ assert(fds || n_fds <= 0);
+ assert(ret);
+
+ if (header_accessible < sizeof(struct bus_header))
+ return -EBADMSG;
+
+ if (header_accessible > message_size)
+ return -EBADMSG;
+ if (footer_accessible > message_size)
+ return -EBADMSG;
+
+ h = header;
+ if (!IN_SET(h->version, 1, 2))
+ return -EBADMSG;
+
+ if (h->type == _SD_BUS_MESSAGE_TYPE_INVALID)
+ return -EBADMSG;
+
+ if (!IN_SET(h->endian, BUS_LITTLE_ENDIAN, BUS_BIG_ENDIAN))
+ return -EBADMSG;
+
+ /* Note that we are happy with unknown flags in the flags header! */
+
+ a = ALIGN(sizeof(sd_bus_message)) + ALIGN(extra);
+
+ if (label) {
+ label_sz = strlen(label);
+ a += label_sz + 1;
+ }
+
+ m = malloc0(a);
+ if (!m)
+ return -ENOMEM;
+
+ m->n_ref = 1;
+ m->sealed = true;
+ m->header = header;
+ m->header_accessible = header_accessible;
+ m->footer = footer;
+ m->footer_accessible = footer_accessible;
+
+ if (BUS_MESSAGE_IS_GVARIANT(m)) {
+ size_t ws;
+
+ if (h->dbus2.cookie == 0)
+ return -EBADMSG;
+
+ /* dbus2 derives the sizes from the message size and
+ the offset table at the end, since it is formatted as
+ gvariant "yyyyuta{tv}v". Since the message itself is a
+ structure with precisely to variable sized entries,
+ there's only one offset in the table, which marks the
+ end of the fields array. */
+
+ ws = bus_gvariant_determine_word_size(message_size, 0);
+ if (footer_accessible < ws)
+ return -EBADMSG;
+
+ m->fields_size = bus_gvariant_read_word_le((uint8_t*) footer + footer_accessible - ws, ws);
+ if (ALIGN8(m->fields_size) > message_size - ws)
+ return -EBADMSG;
+ if (m->fields_size < sizeof(struct bus_header))
+ return -EBADMSG;
+
+ m->fields_size -= sizeof(struct bus_header);
+ m->body_size = message_size - (sizeof(struct bus_header) + ALIGN8(m->fields_size));
+ } else {
+ if (h->dbus1.serial == 0)
+ return -EBADMSG;
+
+ /* dbus1 has the sizes in the header */
+ m->fields_size = BUS_MESSAGE_BSWAP32(m, h->dbus1.fields_size);
+ m->body_size = BUS_MESSAGE_BSWAP32(m, h->dbus1.body_size);
+
+ if (sizeof(struct bus_header) + ALIGN8(m->fields_size) + m->body_size != message_size)
+ return -EBADMSG;
+ }
+
+ m->fds = fds;
+ m->n_fds = n_fds;
+
+ if (label) {
+ m->creds.label = (char*) m + ALIGN(sizeof(sd_bus_message)) + ALIGN(extra);
+ memcpy(m->creds.label, label, label_sz + 1);
+
+ m->creds.mask |= SD_BUS_CREDS_SELINUX_CONTEXT;
+ }
+
+ m->bus = sd_bus_ref(bus);
+ *ret = m;
+ m = NULL;
+
+ return 0;
+}
+
+int bus_message_from_malloc(
+ sd_bus *bus,
+ void *buffer,
+ size_t length,
+ int *fds,
+ unsigned n_fds,
+ const char *label,
+ sd_bus_message **ret) {
+
+ sd_bus_message *m;
+ size_t sz;
+ int r;
+
+ r = bus_message_from_header(
+ bus,
+ buffer, length, /* in this case the initial bytes and the final bytes are the same */
+ buffer, length,
+ length,
+ fds, n_fds,
+ label,
+ 0, &m);
+ if (r < 0)
+ return r;
+
+ sz = length - sizeof(struct bus_header) - ALIGN8(m->fields_size);
+ if (sz > 0) {
+ m->n_body_parts = 1;
+ m->body.data = (uint8_t*) buffer + sizeof(struct bus_header) + ALIGN8(m->fields_size);
+ m->body.size = sz;
+ m->body.sealed = true;
+ m->body.memfd = -1;
+ }
+
+ m->n_iovec = 1;
+ m->iovec = m->iovec_fixed;
+ m->iovec[0].iov_base = buffer;
+ m->iovec[0].iov_len = length;
+
+ r = bus_message_parse_fields(m);
+ if (r < 0)
+ goto fail;
+
+ /* We take possession of the memory and fds now */
+ m->free_header = true;
+ m->free_fds = true;
+
+ *ret = m;
+ return 0;
+
+fail:
+ message_free(m);
+ return r;
+}
+
+static sd_bus_message *message_new(sd_bus *bus, uint8_t type) {
+ sd_bus_message *m;
+
+ assert(bus);
+
+ m = malloc0(ALIGN(sizeof(sd_bus_message)) + sizeof(struct bus_header));
+ if (!m)
+ return NULL;
+
+ m->n_ref = 1;
+ m->header = (struct bus_header*) ((uint8_t*) m + ALIGN(sizeof(struct sd_bus_message)));
+ m->header->endian = BUS_NATIVE_ENDIAN;
+ m->header->type = type;
+ m->header->version = bus->message_version;
+ m->allow_fds = bus->can_fds || (bus->state != BUS_HELLO && bus->state != BUS_RUNNING);
+ m->root_container.need_offsets = BUS_MESSAGE_IS_GVARIANT(m);
+ m->bus = sd_bus_ref(bus);
+
+ if (bus->allow_interactive_authorization)
+ m->header->flags |= BUS_MESSAGE_ALLOW_INTERACTIVE_AUTHORIZATION;
+
+ return m;
+}
+
+_public_ int sd_bus_message_new_signal(
+ sd_bus *bus,
+ sd_bus_message **m,
+ const char *path,
+ const char *interface,
+ const char *member) {
+
+ sd_bus_message *t;
+ int r;
+
+ assert_return(bus, -ENOTCONN);
+ assert_return(bus->state != BUS_UNSET, -ENOTCONN);
+ assert_return(object_path_is_valid(path), -EINVAL);
+ assert_return(interface_name_is_valid(interface), -EINVAL);
+ assert_return(member_name_is_valid(member), -EINVAL);
+ assert_return(m, -EINVAL);
+
+ t = message_new(bus, SD_BUS_MESSAGE_SIGNAL);
+ if (!t)
+ return -ENOMEM;
+
+ t->header->flags |= BUS_MESSAGE_NO_REPLY_EXPECTED;
+
+ r = message_append_field_string(t, BUS_MESSAGE_HEADER_PATH, SD_BUS_TYPE_OBJECT_PATH, path, &t->path);
+ if (r < 0)
+ goto fail;
+ r = message_append_field_string(t, BUS_MESSAGE_HEADER_INTERFACE, SD_BUS_TYPE_STRING, interface, &t->interface);
+ if (r < 0)
+ goto fail;
+ r = message_append_field_string(t, BUS_MESSAGE_HEADER_MEMBER, SD_BUS_TYPE_STRING, member, &t->member);
+ if (r < 0)
+ goto fail;
+
+ *m = t;
+ return 0;
+
+fail:
+ sd_bus_message_unref(t);
+ return r;
+}
+
+_public_ int sd_bus_message_new_method_call(
+ sd_bus *bus,
+ sd_bus_message **m,
+ const char *destination,
+ const char *path,
+ const char *interface,
+ const char *member) {
+
+ sd_bus_message *t;
+ int r;
+
+ assert_return(bus, -ENOTCONN);
+ assert_return(bus->state != BUS_UNSET, -ENOTCONN);
+ assert_return(!destination || service_name_is_valid(destination), -EINVAL);
+ assert_return(object_path_is_valid(path), -EINVAL);
+ assert_return(!interface || interface_name_is_valid(interface), -EINVAL);
+ assert_return(member_name_is_valid(member), -EINVAL);
+ assert_return(m, -EINVAL);
+
+ t = message_new(bus, SD_BUS_MESSAGE_METHOD_CALL);
+ if (!t)
+ return -ENOMEM;
+
+ r = message_append_field_string(t, BUS_MESSAGE_HEADER_PATH, SD_BUS_TYPE_OBJECT_PATH, path, &t->path);
+ if (r < 0)
+ goto fail;
+ r = message_append_field_string(t, BUS_MESSAGE_HEADER_MEMBER, SD_BUS_TYPE_STRING, member, &t->member);
+ if (r < 0)
+ goto fail;
+
+ if (interface) {
+ r = message_append_field_string(t, BUS_MESSAGE_HEADER_INTERFACE, SD_BUS_TYPE_STRING, interface, &t->interface);
+ if (r < 0)
+ goto fail;
+ }
+
+ if (destination) {
+ r = message_append_field_string(t, BUS_MESSAGE_HEADER_DESTINATION, SD_BUS_TYPE_STRING, destination, &t->destination);
+ if (r < 0)
+ goto fail;
+ }
+
+ *m = t;
+ return 0;
+
+fail:
+ message_free(t);
+ return r;
+}
+
+static int message_new_reply(
+ sd_bus_message *call,
+ uint8_t type,
+ sd_bus_message **m) {
+
+ sd_bus_message *t;
+ int r;
+
+ assert_return(call, -EINVAL);
+ assert_return(call->sealed, -EPERM);
+ assert_return(call->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL);
+ assert_return(call->bus->state != BUS_UNSET, -ENOTCONN);
+ assert_return(m, -EINVAL);
+
+ t = message_new(call->bus, type);
+ if (!t)
+ return -ENOMEM;
+
+ t->header->flags |= BUS_MESSAGE_NO_REPLY_EXPECTED;
+ t->reply_cookie = BUS_MESSAGE_COOKIE(call);
+ if (t->reply_cookie == 0)
+ return -EOPNOTSUPP;
+
+ r = message_append_reply_cookie(t, t->reply_cookie);
+ if (r < 0)
+ goto fail;
+
+ if (call->sender) {
+ r = message_append_field_string(t, BUS_MESSAGE_HEADER_DESTINATION, SD_BUS_TYPE_STRING, call->sender, &t->destination);
+ if (r < 0)
+ goto fail;
+ }
+
+ t->dont_send = !!(call->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED);
+ t->enforced_reply_signature = call->enforced_reply_signature;
+
+ *m = t;
+ return 0;
+
+fail:
+ message_free(t);
+ return r;
+}
+
+_public_ int sd_bus_message_new_method_return(
+ sd_bus_message *call,
+ sd_bus_message **m) {
+
+ return message_new_reply(call, SD_BUS_MESSAGE_METHOD_RETURN, m);
+}
+
+_public_ int sd_bus_message_new_method_error(
+ sd_bus_message *call,
+ sd_bus_message **m,
+ const sd_bus_error *e) {
+
+ sd_bus_message *t;
+ int r;
+
+ assert_return(sd_bus_error_is_set(e), -EINVAL);
+ assert_return(m, -EINVAL);
+
+ r = message_new_reply(call, SD_BUS_MESSAGE_METHOD_ERROR, &t);
+ if (r < 0)
+ return r;
+
+ r = message_append_field_string(t, BUS_MESSAGE_HEADER_ERROR_NAME, SD_BUS_TYPE_STRING, e->name, &t->error.name);
+ if (r < 0)
+ goto fail;
+
+ if (e->message) {
+ r = message_append_basic(t, SD_BUS_TYPE_STRING, e->message, (const void**) &t->error.message);
+ if (r < 0)
+ goto fail;
+ }
+
+ t->error._need_free = -1;
+
+ *m = t;
+ return 0;
+
+fail:
+ message_free(t);
+ return r;
+}
+
+_public_ int sd_bus_message_new_method_errorf(
+ sd_bus_message *call,
+ sd_bus_message **m,
+ const char *name,
+ const char *format,
+ ...) {
+
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ va_list ap;
+
+ assert_return(name, -EINVAL);
+ assert_return(m, -EINVAL);
+
+ va_start(ap, format);
+ bus_error_setfv(&error, name, format, ap);
+ va_end(ap);
+
+ return sd_bus_message_new_method_error(call, m, &error);
+}
+
+_public_ int sd_bus_message_new_method_errno(
+ sd_bus_message *call,
+ sd_bus_message **m,
+ int error,
+ const sd_bus_error *p) {
+
+ _cleanup_(sd_bus_error_free) sd_bus_error berror = SD_BUS_ERROR_NULL;
+
+ if (sd_bus_error_is_set(p))
+ return sd_bus_message_new_method_error(call, m, p);
+
+ sd_bus_error_set_errno(&berror, error);
+
+ return sd_bus_message_new_method_error(call, m, &berror);
+}
+
+_public_ int sd_bus_message_new_method_errnof(
+ sd_bus_message *call,
+ sd_bus_message **m,
+ int error,
+ const char *format,
+ ...) {
+
+ _cleanup_(sd_bus_error_free) sd_bus_error berror = SD_BUS_ERROR_NULL;
+ va_list ap;
+
+ va_start(ap, format);
+ sd_bus_error_set_errnofv(&berror, error, format, ap);
+ va_end(ap);
+
+ return sd_bus_message_new_method_error(call, m, &berror);
+}
+
+void bus_message_set_sender_local(sd_bus *bus, sd_bus_message *m) {
+ assert(bus);
+ assert(m);
+
+ m->sender = m->creds.unique_name = (char*) "org.freedesktop.DBus.Local";
+ m->creds.well_known_names_local = true;
+ m->creds.mask |= (SD_BUS_CREDS_UNIQUE_NAME|SD_BUS_CREDS_WELL_KNOWN_NAMES) & bus->creds_mask;
+}
+
+void bus_message_set_sender_driver(sd_bus *bus, sd_bus_message *m) {
+ assert(bus);
+ assert(m);
+
+ m->sender = m->creds.unique_name = (char*) "org.freedesktop.DBus";
+ m->creds.well_known_names_driver = true;
+ m->creds.mask |= (SD_BUS_CREDS_UNIQUE_NAME|SD_BUS_CREDS_WELL_KNOWN_NAMES) & bus->creds_mask;
+}
+
+int bus_message_new_synthetic_error(
+ sd_bus *bus,
+ uint64_t cookie,
+ const sd_bus_error *e,
+ sd_bus_message **m) {
+
+ sd_bus_message *t;
+ int r;
+
+ assert(bus);
+ assert(sd_bus_error_is_set(e));
+ assert(m);
+
+ t = message_new(bus, SD_BUS_MESSAGE_METHOD_ERROR);
+ if (!t)
+ return -ENOMEM;
+
+ t->header->flags |= BUS_MESSAGE_NO_REPLY_EXPECTED;
+ t->reply_cookie = cookie;
+
+ r = message_append_reply_cookie(t, t->reply_cookie);
+ if (r < 0)
+ goto fail;
+
+ if (bus && bus->unique_name) {
+ r = message_append_field_string(t, BUS_MESSAGE_HEADER_DESTINATION, SD_BUS_TYPE_STRING, bus->unique_name, &t->destination);
+ if (r < 0)
+ goto fail;
+ }
+
+ r = message_append_field_string(t, BUS_MESSAGE_HEADER_ERROR_NAME, SD_BUS_TYPE_STRING, e->name, &t->error.name);
+ if (r < 0)
+ goto fail;
+
+ if (e->message) {
+ r = message_append_basic(t, SD_BUS_TYPE_STRING, e->message, (const void**) &t->error.message);
+ if (r < 0)
+ goto fail;
+ }
+
+ t->error._need_free = -1;
+
+ bus_message_set_sender_driver(bus, t);
+
+ *m = t;
+ return 0;
+
+fail:
+ message_free(t);
+ return r;
+}
+
+_public_ sd_bus_message* sd_bus_message_ref(sd_bus_message *m) {
+
+ if (!m)
+ return NULL;
+
+ assert(m->n_ref > 0);
+ m->n_ref++;
+
+ return m;
+}
+
+_public_ sd_bus_message* sd_bus_message_unref(sd_bus_message *m) {
+
+ if (!m)
+ return NULL;
+
+ assert(m->n_ref > 0);
+ m->n_ref--;
+
+ if (m->n_ref > 0)
+ return NULL;
+
+ message_free(m);
+ return NULL;
+}
+
+_public_ int sd_bus_message_get_type(sd_bus_message *m, uint8_t *type) {
+ assert_return(m, -EINVAL);
+ assert_return(type, -EINVAL);
+
+ *type = m->header->type;
+ return 0;
+}
+
+_public_ int sd_bus_message_get_cookie(sd_bus_message *m, uint64_t *cookie) {
+ uint64_t c;
+
+ assert_return(m, -EINVAL);
+ assert_return(cookie, -EINVAL);
+
+ c = BUS_MESSAGE_COOKIE(m);
+ if (c == 0)
+ return -ENODATA;
+
+ *cookie = BUS_MESSAGE_COOKIE(m);
+ return 0;
+}
+
+_public_ int sd_bus_message_get_reply_cookie(sd_bus_message *m, uint64_t *cookie) {
+ assert_return(m, -EINVAL);
+ assert_return(cookie, -EINVAL);
+
+ if (m->reply_cookie == 0)
+ return -ENODATA;
+
+ *cookie = m->reply_cookie;
+ return 0;
+}
+
+_public_ int sd_bus_message_get_expect_reply(sd_bus_message *m) {
+ assert_return(m, -EINVAL);
+
+ return m->header->type == SD_BUS_MESSAGE_METHOD_CALL &&
+ !(m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED);
+}
+
+_public_ int sd_bus_message_get_auto_start(sd_bus_message *m) {
+ assert_return(m, -EINVAL);
+
+ return !(m->header->flags & BUS_MESSAGE_NO_AUTO_START);
+}
+
+_public_ int sd_bus_message_get_allow_interactive_authorization(sd_bus_message *m) {
+ assert_return(m, -EINVAL);
+
+ return m->header->type == SD_BUS_MESSAGE_METHOD_CALL &&
+ (m->header->flags & BUS_MESSAGE_ALLOW_INTERACTIVE_AUTHORIZATION);
+}
+
+_public_ const char *sd_bus_message_get_path(sd_bus_message *m) {
+ assert_return(m, NULL);
+
+ return m->path;
+}
+
+_public_ const char *sd_bus_message_get_interface(sd_bus_message *m) {
+ assert_return(m, NULL);
+
+ return m->interface;
+}
+
+_public_ const char *sd_bus_message_get_member(sd_bus_message *m) {
+ assert_return(m, NULL);
+
+ return m->member;
+}
+
+_public_ const char *sd_bus_message_get_destination(sd_bus_message *m) {
+ assert_return(m, NULL);
+
+ return m->destination;
+}
+
+_public_ const char *sd_bus_message_get_sender(sd_bus_message *m) {
+ assert_return(m, NULL);
+
+ return m->sender;
+}
+
+_public_ const sd_bus_error *sd_bus_message_get_error(sd_bus_message *m) {
+ assert_return(m, NULL);
+
+ if (!sd_bus_error_is_set(&m->error))
+ return NULL;
+
+ return &m->error;
+}
+
+_public_ int sd_bus_message_get_monotonic_usec(sd_bus_message *m, uint64_t *usec) {
+ assert_return(m, -EINVAL);
+ assert_return(usec, -EINVAL);
+
+ if (m->monotonic <= 0)
+ return -ENODATA;
+
+ *usec = m->monotonic;
+ return 0;
+}
+
+_public_ int sd_bus_message_get_realtime_usec(sd_bus_message *m, uint64_t *usec) {
+ assert_return(m, -EINVAL);
+ assert_return(usec, -EINVAL);
+
+ if (m->realtime <= 0)
+ return -ENODATA;
+
+ *usec = m->realtime;
+ return 0;
+}
+
+_public_ int sd_bus_message_get_seqnum(sd_bus_message *m, uint64_t *seqnum) {
+ assert_return(m, -EINVAL);
+ assert_return(seqnum, -EINVAL);
+
+ if (m->seqnum <= 0)
+ return -ENODATA;
+
+ *seqnum = m->seqnum;
+ return 0;
+}
+
+_public_ sd_bus_creds *sd_bus_message_get_creds(sd_bus_message *m) {
+ assert_return(m, NULL);
+
+ if (m->creds.mask == 0)
+ return NULL;
+
+ return &m->creds;
+}
+
+_public_ int sd_bus_message_is_signal(
+ sd_bus_message *m,
+ const char *interface,
+ const char *member) {
+
+ assert_return(m, -EINVAL);
+
+ if (m->header->type != SD_BUS_MESSAGE_SIGNAL)
+ return 0;
+
+ if (interface && (!m->interface || !streq(m->interface, interface)))
+ return 0;
+
+ if (member && (!m->member || !streq(m->member, member)))
+ return 0;
+
+ return 1;
+}
+
+_public_ int sd_bus_message_is_method_call(
+ sd_bus_message *m,
+ const char *interface,
+ const char *member) {
+
+ assert_return(m, -EINVAL);
+
+ if (m->header->type != SD_BUS_MESSAGE_METHOD_CALL)
+ return 0;
+
+ if (interface && (!m->interface || !streq(m->interface, interface)))
+ return 0;
+
+ if (member && (!m->member || !streq(m->member, member)))
+ return 0;
+
+ return 1;
+}
+
+_public_ int sd_bus_message_is_method_error(sd_bus_message *m, const char *name) {
+ assert_return(m, -EINVAL);
+
+ if (m->header->type != SD_BUS_MESSAGE_METHOD_ERROR)
+ return 0;
+
+ if (name && (!m->error.name || !streq(m->error.name, name)))
+ return 0;
+
+ return 1;
+}
+
+_public_ int sd_bus_message_set_expect_reply(sd_bus_message *m, int b) {
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(m->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EPERM);
+
+ SET_FLAG(m->header->flags, BUS_MESSAGE_NO_REPLY_EXPECTED, !b);
+
+ return 0;
+}
+
+_public_ int sd_bus_message_set_auto_start(sd_bus_message *m, int b) {
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+
+ SET_FLAG(m->header->flags, BUS_MESSAGE_NO_AUTO_START, !b);
+
+ return 0;
+}
+
+_public_ int sd_bus_message_set_allow_interactive_authorization(sd_bus_message *m, int b) {
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+
+ SET_FLAG(m->header->flags, BUS_MESSAGE_ALLOW_INTERACTIVE_AUTHORIZATION, b);
+
+ return 0;
+}
+
+static struct bus_container *message_get_container(sd_bus_message *m) {
+ assert(m);
+
+ if (m->n_containers == 0)
+ return &m->root_container;
+
+ assert(m->containers);
+ return m->containers + m->n_containers - 1;
+}
+
+struct bus_body_part *message_append_part(sd_bus_message *m) {
+ struct bus_body_part *part;
+
+ assert(m);
+
+ if (m->poisoned)
+ return NULL;
+
+ if (m->n_body_parts <= 0) {
+ part = &m->body;
+ zero(*part);
+ } else {
+ assert(m->body_end);
+
+ part = new0(struct bus_body_part, 1);
+ if (!part) {
+ m->poisoned = true;
+ return NULL;
+ }
+
+ m->body_end->next = part;
+ }
+
+ part->memfd = -1;
+ m->body_end = part;
+ m->n_body_parts++;
+
+ return part;
+}
+
+static void part_zero(struct bus_body_part *part, size_t sz) {
+ assert(part);
+ assert(sz > 0);
+ assert(sz < 8);
+
+ /* All other fields can be left in their defaults */
+ assert(!part->data);
+ assert(part->memfd < 0);
+
+ part->size = sz;
+ part->is_zero = true;
+ part->sealed = true;
+}
+
+static int part_make_space(
+ struct sd_bus_message *m,
+ struct bus_body_part *part,
+ size_t sz,
+ void **q) {
+
+ void *n;
+ int r;
+
+ assert(m);
+ assert(part);
+ assert(!part->sealed);
+
+ if (m->poisoned)
+ return -ENOMEM;
+
+ if (!part->data && part->memfd < 0) {
+ part->memfd = bus_kernel_pop_memfd(m->bus, &part->data, &part->mapped, &part->allocated);
+ part->mmap_begin = part->data;
+ }
+
+ if (part->memfd >= 0) {
+
+ if (part->allocated == 0 || sz > part->allocated) {
+ uint64_t new_allocated;
+
+ new_allocated = PAGE_ALIGN(sz > 0 ? 2 * sz : 1);
+ r = memfd_set_size(part->memfd, new_allocated);
+ if (r < 0) {
+ m->poisoned = true;
+ return r;
+ }
+
+ part->allocated = new_allocated;
+ }
+
+ if (!part->data || sz > part->mapped) {
+ size_t psz;
+
+ psz = PAGE_ALIGN(sz > 0 ? sz : 1);
+ if (part->mapped <= 0)
+ n = mmap(NULL, psz, PROT_READ|PROT_WRITE, MAP_SHARED, part->memfd, 0);
+ else
+ n = mremap(part->mmap_begin, part->mapped, psz, MREMAP_MAYMOVE);
+
+ if (n == MAP_FAILED) {
+ m->poisoned = true;
+ return -errno;
+ }
+
+ part->mmap_begin = part->data = n;
+ part->mapped = psz;
+ part->memfd_offset = 0;
+ }
+
+ part->munmap_this = true;
+ } else {
+ if (part->allocated == 0 || sz > part->allocated) {
+ size_t new_allocated;
+
+ new_allocated = sz > 0 ? 2 * sz : 64;
+ n = realloc(part->data, new_allocated);
+ if (!n) {
+ m->poisoned = true;
+ return -ENOMEM;
+ }
+
+ part->data = n;
+ part->allocated = new_allocated;
+ part->free_this = true;
+ }
+ }
+
+ if (q)
+ *q = part->data ? (uint8_t*) part->data + part->size : NULL;
+
+ part->size = sz;
+ return 0;
+}
+
+static int message_add_offset(sd_bus_message *m, size_t offset) {
+ struct bus_container *c;
+
+ assert(m);
+ assert(BUS_MESSAGE_IS_GVARIANT(m));
+
+ /* Add offset to current container, unless this is the first
+ * item in it, which will have the 0 offset, which we can
+ * ignore. */
+ c = message_get_container(m);
+
+ if (!c->need_offsets)
+ return 0;
+
+ if (!GREEDY_REALLOC(c->offsets, c->offsets_allocated, c->n_offsets + 1))
+ return -ENOMEM;
+
+ c->offsets[c->n_offsets++] = offset;
+ return 0;
+}
+
+static void message_extend_containers(sd_bus_message *m, size_t expand) {
+ struct bus_container *c;
+
+ assert(m);
+
+ if (expand <= 0)
+ return;
+
+ /* Update counters */
+ for (c = m->containers; c < m->containers + m->n_containers; c++) {
+
+ if (c->array_size)
+ *c->array_size += expand;
+ }
+}
+
+static void *message_extend_body(
+ sd_bus_message *m,
+ size_t align,
+ size_t sz,
+ bool add_offset,
+ bool force_inline) {
+
+ size_t start_body, end_body, padding, added;
+ void *p;
+ int r;
+
+ assert(m);
+ assert(align > 0);
+ assert(!m->sealed);
+
+ if (m->poisoned)
+ return NULL;
+
+ start_body = ALIGN_TO((size_t) m->body_size, align);
+ end_body = start_body + sz;
+
+ padding = start_body - m->body_size;
+ added = padding + sz;
+
+ /* Check for 32bit overflows */
+ if (end_body > (size_t) ((uint32_t) -1) ||
+ end_body < start_body) {
+ m->poisoned = true;
+ return NULL;
+ }
+
+ if (added > 0) {
+ struct bus_body_part *part = NULL;
+ bool add_new_part;
+
+ add_new_part =
+ m->n_body_parts <= 0 ||
+ m->body_end->sealed ||
+ (padding != ALIGN_TO(m->body_end->size, align) - m->body_end->size) ||
+ (force_inline && m->body_end->size > MEMFD_MIN_SIZE); /* if this must be an inlined extension, let's create a new part if the previous part is large enough to be inlined */
+
+ if (add_new_part) {
+ if (padding > 0) {
+ part = message_append_part(m);
+ if (!part)
+ return NULL;
+
+ part_zero(part, padding);
+ }
+
+ part = message_append_part(m);
+ if (!part)
+ return NULL;
+
+ r = part_make_space(m, part, sz, &p);
+ if (r < 0)
+ return NULL;
+ } else {
+ struct bus_container *c;
+ void *op;
+ size_t os, start_part, end_part;
+
+ part = m->body_end;
+ op = part->data;
+ os = part->size;
+
+ start_part = ALIGN_TO(part->size, align);
+ end_part = start_part + sz;
+
+ r = part_make_space(m, part, end_part, &p);
+ if (r < 0)
+ return NULL;
+
+ if (padding > 0) {
+ memzero(p, padding);
+ p = (uint8_t*) p + padding;
+ }
+
+ /* Readjust pointers */
+ for (c = m->containers; c < m->containers + m->n_containers; c++)
+ c->array_size = adjust_pointer(c->array_size, op, os, part->data);
+
+ m->error.message = (const char*) adjust_pointer(m->error.message, op, os, part->data);
+ }
+ } else
+ /* Return something that is not NULL and is aligned */
+ p = (uint8_t *) NULL + align;
+
+ m->body_size = end_body;
+ message_extend_containers(m, added);
+
+ if (add_offset) {
+ r = message_add_offset(m, end_body);
+ if (r < 0) {
+ m->poisoned = true;
+ return NULL;
+ }
+ }
+
+ return p;
+}
+
+static int message_push_fd(sd_bus_message *m, int fd) {
+ int *f, copy;
+
+ assert(m);
+
+ if (fd < 0)
+ return -EINVAL;
+
+ if (!m->allow_fds)
+ return -EOPNOTSUPP;
+
+ copy = fcntl(fd, F_DUPFD_CLOEXEC, 3);
+ if (copy < 0)
+ return -errno;
+
+ f = realloc(m->fds, sizeof(int) * (m->n_fds + 1));
+ if (!f) {
+ m->poisoned = true;
+ safe_close(copy);
+ return -ENOMEM;
+ }
+
+ m->fds = f;
+ m->fds[m->n_fds] = copy;
+ m->free_fds = true;
+
+ return copy;
+}
+
+int message_append_basic(sd_bus_message *m, char type, const void *p, const void **stored) {
+ _cleanup_close_ int fd = -1;
+ struct bus_container *c;
+ ssize_t align, sz;
+ void *a;
+
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(bus_type_is_basic(type), -EINVAL);
+ assert_return(!m->poisoned, -ESTALE);
+
+ c = message_get_container(m);
+
+ if (c->signature && c->signature[c->index]) {
+ /* Container signature is already set */
+
+ if (c->signature[c->index] != type)
+ return -ENXIO;
+ } else {
+ char *e;
+
+ /* Maybe we can append to the signature? But only if this is the top-level container */
+ if (c->enclosing != 0)
+ return -ENXIO;
+
+ e = strextend(&c->signature, CHAR_TO_STR(type), NULL);
+ if (!e) {
+ m->poisoned = true;
+ return -ENOMEM;
+ }
+ }
+
+ if (BUS_MESSAGE_IS_GVARIANT(m)) {
+ uint8_t u8;
+ uint32_t u32;
+
+ switch (type) {
+
+ case SD_BUS_TYPE_SIGNATURE:
+ case SD_BUS_TYPE_STRING:
+ p = strempty(p);
+
+ /* Fall through... */
+ case SD_BUS_TYPE_OBJECT_PATH:
+ if (!p)
+ return -EINVAL;
+
+ align = 1;
+ sz = strlen(p) + 1;
+ break;
+
+ case SD_BUS_TYPE_BOOLEAN:
+
+ u8 = p && *(int*) p;
+ p = &u8;
+
+ align = sz = 1;
+ break;
+
+ case SD_BUS_TYPE_UNIX_FD:
+
+ if (!p)
+ return -EINVAL;
+
+ fd = message_push_fd(m, *(int*) p);
+ if (fd < 0)
+ return fd;
+
+ u32 = m->n_fds;
+ p = &u32;
+
+ align = sz = 4;
+ break;
+
+ default:
+ align = bus_gvariant_get_alignment(CHAR_TO_STR(type));
+ sz = bus_gvariant_get_size(CHAR_TO_STR(type));
+ break;
+ }
+
+ assert(align > 0);
+ assert(sz > 0);
+
+ a = message_extend_body(m, align, sz, true, false);
+ if (!a)
+ return -ENOMEM;
+
+ memcpy(a, p, sz);
+
+ if (stored)
+ *stored = (const uint8_t*) a;
+
+ } else {
+ uint32_t u32;
+
+ switch (type) {
+
+ case SD_BUS_TYPE_STRING:
+ /* To make things easy we'll serialize a NULL string
+ * into the empty string */
+ p = strempty(p);
+
+ /* Fall through... */
+ case SD_BUS_TYPE_OBJECT_PATH:
+
+ if (!p)
+ return -EINVAL;
+
+ align = 4;
+ sz = 4 + strlen(p) + 1;
+ break;
+
+ case SD_BUS_TYPE_SIGNATURE:
+
+ p = strempty(p);
+
+ align = 1;
+ sz = 1 + strlen(p) + 1;
+ break;
+
+ case SD_BUS_TYPE_BOOLEAN:
+
+ u32 = p && *(int*) p;
+ p = &u32;
+
+ align = sz = 4;
+ break;
+
+ case SD_BUS_TYPE_UNIX_FD:
+
+ if (!p)
+ return -EINVAL;
+
+ fd = message_push_fd(m, *(int*) p);
+ if (fd < 0)
+ return fd;
+
+ u32 = m->n_fds;
+ p = &u32;
+
+ align = sz = 4;
+ break;
+
+ default:
+ align = bus_type_get_alignment(type);
+ sz = bus_type_get_size(type);
+ break;
+ }
+
+ assert(align > 0);
+ assert(sz > 0);
+
+ a = message_extend_body(m, align, sz, false, false);
+ if (!a)
+ return -ENOMEM;
+
+ if (type == SD_BUS_TYPE_STRING || type == SD_BUS_TYPE_OBJECT_PATH) {
+ *(uint32_t*) a = sz - 5;
+ memcpy((uint8_t*) a + 4, p, sz - 4);
+
+ if (stored)
+ *stored = (const uint8_t*) a + 4;
+
+ } else if (type == SD_BUS_TYPE_SIGNATURE) {
+ *(uint8_t*) a = sz - 2;
+ memcpy((uint8_t*) a + 1, p, sz - 1);
+
+ if (stored)
+ *stored = (const uint8_t*) a + 1;
+ } else {
+ memcpy(a, p, sz);
+
+ if (stored)
+ *stored = a;
+ }
+ }
+
+ if (type == SD_BUS_TYPE_UNIX_FD)
+ m->n_fds++;
+
+ if (c->enclosing != SD_BUS_TYPE_ARRAY)
+ c->index++;
+
+ fd = -1;
+ return 0;
+}
+
+_public_ int sd_bus_message_append_basic(sd_bus_message *m, char type, const void *p) {
+ return message_append_basic(m, type, p, NULL);
+}
+
+_public_ int sd_bus_message_append_string_space(
+ sd_bus_message *m,
+ size_t size,
+ char **s) {
+
+ struct bus_container *c;
+ void *a;
+
+ assert_return(m, -EINVAL);
+ assert_return(s, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(!m->poisoned, -ESTALE);
+
+ c = message_get_container(m);
+
+ if (c->signature && c->signature[c->index]) {
+ /* Container signature is already set */
+
+ if (c->signature[c->index] != SD_BUS_TYPE_STRING)
+ return -ENXIO;
+ } else {
+ char *e;
+
+ /* Maybe we can append to the signature? But only if this is the top-level container */
+ if (c->enclosing != 0)
+ return -ENXIO;
+
+ e = strextend(&c->signature, CHAR_TO_STR(SD_BUS_TYPE_STRING), NULL);
+ if (!e) {
+ m->poisoned = true;
+ return -ENOMEM;
+ }
+ }
+
+ if (BUS_MESSAGE_IS_GVARIANT(m)) {
+ a = message_extend_body(m, 1, size + 1, true, false);
+ if (!a)
+ return -ENOMEM;
+
+ *s = a;
+ } else {
+ a = message_extend_body(m, 4, 4 + size + 1, false, false);
+ if (!a)
+ return -ENOMEM;
+
+ *(uint32_t*) a = size;
+ *s = (char*) a + 4;
+ }
+
+ (*s)[size] = 0;
+
+ if (c->enclosing != SD_BUS_TYPE_ARRAY)
+ c->index++;
+
+ return 0;
+}
+
+_public_ int sd_bus_message_append_string_iovec(
+ sd_bus_message *m,
+ const struct iovec *iov,
+ unsigned n) {
+
+ size_t size;
+ unsigned i;
+ char *p;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(iov || n == 0, -EINVAL);
+ assert_return(!m->poisoned, -ESTALE);
+
+ size = IOVEC_TOTAL_SIZE(iov, n);
+
+ r = sd_bus_message_append_string_space(m, size, &p);
+ if (r < 0)
+ return r;
+
+ for (i = 0; i < n; i++) {
+
+ if (iov[i].iov_base)
+ memcpy(p, iov[i].iov_base, iov[i].iov_len);
+ else
+ memset(p, ' ', iov[i].iov_len);
+
+ p += iov[i].iov_len;
+ }
+
+ return 0;
+}
+
+static int bus_message_open_array(
+ sd_bus_message *m,
+ struct bus_container *c,
+ const char *contents,
+ uint32_t **array_size,
+ size_t *begin,
+ bool *need_offsets) {
+
+ unsigned nindex;
+ int alignment, r;
+
+ assert(m);
+ assert(c);
+ assert(contents);
+ assert(array_size);
+ assert(begin);
+ assert(need_offsets);
+
+ if (!signature_is_single(contents, true))
+ return -EINVAL;
+
+ if (c->signature && c->signature[c->index]) {
+
+ /* Verify the existing signature */
+
+ if (c->signature[c->index] != SD_BUS_TYPE_ARRAY)
+ return -ENXIO;
+
+ if (!startswith(c->signature + c->index + 1, contents))
+ return -ENXIO;
+
+ nindex = c->index + 1 + strlen(contents);
+ } else {
+ char *e;
+
+ if (c->enclosing != 0)
+ return -ENXIO;
+
+ /* Extend the existing signature */
+
+ e = strextend(&c->signature, CHAR_TO_STR(SD_BUS_TYPE_ARRAY), contents, NULL);
+ if (!e) {
+ m->poisoned = true;
+ return -ENOMEM;
+ }
+
+ nindex = e - c->signature;
+ }
+
+ if (BUS_MESSAGE_IS_GVARIANT(m)) {
+ alignment = bus_gvariant_get_alignment(contents);
+ if (alignment < 0)
+ return alignment;
+
+ /* Add alignment padding and add to offset list */
+ if (!message_extend_body(m, alignment, 0, false, false))
+ return -ENOMEM;
+
+ r = bus_gvariant_is_fixed_size(contents);
+ if (r < 0)
+ return r;
+
+ *begin = m->body_size;
+ *need_offsets = r == 0;
+ } else {
+ void *a, *op;
+ size_t os;
+ struct bus_body_part *o;
+
+ alignment = bus_type_get_alignment(contents[0]);
+ if (alignment < 0)
+ return alignment;
+
+ a = message_extend_body(m, 4, 4, false, false);
+ if (!a)
+ return -ENOMEM;
+
+ o = m->body_end;
+ op = m->body_end->data;
+ os = m->body_end->size;
+
+ /* Add alignment between size and first element */
+ if (!message_extend_body(m, alignment, 0, false, false))
+ return -ENOMEM;
+
+ /* location of array size might have changed so let's readjust a */
+ if (o == m->body_end)
+ a = adjust_pointer(a, op, os, m->body_end->data);
+
+ *(uint32_t*) a = 0;
+ *array_size = a;
+ }
+
+ if (c->enclosing != SD_BUS_TYPE_ARRAY)
+ c->index = nindex;
+
+ return 0;
+}
+
+static int bus_message_open_variant(
+ sd_bus_message *m,
+ struct bus_container *c,
+ const char *contents) {
+
+ assert(m);
+ assert(c);
+ assert(contents);
+
+ if (!signature_is_single(contents, false))
+ return -EINVAL;
+
+ if (*contents == SD_BUS_TYPE_DICT_ENTRY_BEGIN)
+ return -EINVAL;
+
+ if (c->signature && c->signature[c->index]) {
+
+ if (c->signature[c->index] != SD_BUS_TYPE_VARIANT)
+ return -ENXIO;
+
+ } else {
+ char *e;
+
+ if (c->enclosing != 0)
+ return -ENXIO;
+
+ e = strextend(&c->signature, CHAR_TO_STR(SD_BUS_TYPE_VARIANT), NULL);
+ if (!e) {
+ m->poisoned = true;
+ return -ENOMEM;
+ }
+ }
+
+ if (BUS_MESSAGE_IS_GVARIANT(m)) {
+ /* Variants are always aligned to 8 */
+
+ if (!message_extend_body(m, 8, 0, false, false))
+ return -ENOMEM;
+
+ } else {
+ size_t l;
+ void *a;
+
+ l = strlen(contents);
+ a = message_extend_body(m, 1, 1 + l + 1, false, false);
+ if (!a)
+ return -ENOMEM;
+
+ *(uint8_t*) a = l;
+ memcpy((uint8_t*) a + 1, contents, l + 1);
+ }
+
+ if (c->enclosing != SD_BUS_TYPE_ARRAY)
+ c->index++;
+
+ return 0;
+}
+
+static int bus_message_open_struct(
+ sd_bus_message *m,
+ struct bus_container *c,
+ const char *contents,
+ size_t *begin,
+ bool *need_offsets) {
+
+ size_t nindex;
+ int r;
+
+ assert(m);
+ assert(c);
+ assert(contents);
+ assert(begin);
+ assert(need_offsets);
+
+ if (!signature_is_valid(contents, false))
+ return -EINVAL;
+
+ if (c->signature && c->signature[c->index]) {
+ size_t l;
+
+ l = strlen(contents);
+
+ if (c->signature[c->index] != SD_BUS_TYPE_STRUCT_BEGIN ||
+ !startswith(c->signature + c->index + 1, contents) ||
+ c->signature[c->index + 1 + l] != SD_BUS_TYPE_STRUCT_END)
+ return -ENXIO;
+
+ nindex = c->index + 1 + l + 1;
+ } else {
+ char *e;
+
+ if (c->enclosing != 0)
+ return -ENXIO;
+
+ e = strextend(&c->signature, CHAR_TO_STR(SD_BUS_TYPE_STRUCT_BEGIN), contents, CHAR_TO_STR(SD_BUS_TYPE_STRUCT_END), NULL);
+ if (!e) {
+ m->poisoned = true;
+ return -ENOMEM;
+ }
+
+ nindex = e - c->signature;
+ }
+
+ if (BUS_MESSAGE_IS_GVARIANT(m)) {
+ int alignment;
+
+ alignment = bus_gvariant_get_alignment(contents);
+ if (alignment < 0)
+ return alignment;
+
+ if (!message_extend_body(m, alignment, 0, false, false))
+ return -ENOMEM;
+
+ r = bus_gvariant_is_fixed_size(contents);
+ if (r < 0)
+ return r;
+
+ *begin = m->body_size;
+ *need_offsets = r == 0;
+ } else {
+ /* Align contents to 8 byte boundary */
+ if (!message_extend_body(m, 8, 0, false, false))
+ return -ENOMEM;
+ }
+
+ if (c->enclosing != SD_BUS_TYPE_ARRAY)
+ c->index = nindex;
+
+ return 0;
+}
+
+static int bus_message_open_dict_entry(
+ sd_bus_message *m,
+ struct bus_container *c,
+ const char *contents,
+ size_t *begin,
+ bool *need_offsets) {
+
+ int r;
+
+ assert(m);
+ assert(c);
+ assert(contents);
+ assert(begin);
+ assert(need_offsets);
+
+ if (!signature_is_pair(contents))
+ return -EINVAL;
+
+ if (c->enclosing != SD_BUS_TYPE_ARRAY)
+ return -ENXIO;
+
+ if (c->signature && c->signature[c->index]) {
+ size_t l;
+
+ l = strlen(contents);
+
+ if (c->signature[c->index] != SD_BUS_TYPE_DICT_ENTRY_BEGIN ||
+ !startswith(c->signature + c->index + 1, contents) ||
+ c->signature[c->index + 1 + l] != SD_BUS_TYPE_DICT_ENTRY_END)
+ return -ENXIO;
+ } else
+ return -ENXIO;
+
+ if (BUS_MESSAGE_IS_GVARIANT(m)) {
+ int alignment;
+
+ alignment = bus_gvariant_get_alignment(contents);
+ if (alignment < 0)
+ return alignment;
+
+ if (!message_extend_body(m, alignment, 0, false, false))
+ return -ENOMEM;
+
+ r = bus_gvariant_is_fixed_size(contents);
+ if (r < 0)
+ return r;
+
+ *begin = m->body_size;
+ *need_offsets = r == 0;
+ } else {
+ /* Align contents to 8 byte boundary */
+ if (!message_extend_body(m, 8, 0, false, false))
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+_public_ int sd_bus_message_open_container(
+ sd_bus_message *m,
+ char type,
+ const char *contents) {
+
+ struct bus_container *c, *w;
+ uint32_t *array_size = NULL;
+ char *signature;
+ size_t before, begin = 0;
+ bool need_offsets = false;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(contents, -EINVAL);
+ assert_return(!m->poisoned, -ESTALE);
+
+ /* Make sure we have space for one more container */
+ if (!GREEDY_REALLOC(m->containers, m->containers_allocated, m->n_containers + 1)) {
+ m->poisoned = true;
+ return -ENOMEM;
+ }
+
+ c = message_get_container(m);
+
+ signature = strdup(contents);
+ if (!signature) {
+ m->poisoned = true;
+ return -ENOMEM;
+ }
+
+ /* Save old index in the parent container, in case we have to
+ * abort this container */
+ c->saved_index = c->index;
+ before = m->body_size;
+
+ if (type == SD_BUS_TYPE_ARRAY)
+ r = bus_message_open_array(m, c, contents, &array_size, &begin, &need_offsets);
+ else if (type == SD_BUS_TYPE_VARIANT)
+ r = bus_message_open_variant(m, c, contents);
+ else if (type == SD_BUS_TYPE_STRUCT)
+ r = bus_message_open_struct(m, c, contents, &begin, &need_offsets);
+ else if (type == SD_BUS_TYPE_DICT_ENTRY)
+ r = bus_message_open_dict_entry(m, c, contents, &begin, &need_offsets);
+ else
+ r = -EINVAL;
+
+ if (r < 0) {
+ free(signature);
+ return r;
+ }
+
+ /* OK, let's fill it in */
+ w = m->containers + m->n_containers++;
+ w->enclosing = type;
+ w->signature = signature;
+ w->index = 0;
+ w->array_size = array_size;
+ w->before = before;
+ w->begin = begin;
+ w->n_offsets = w->offsets_allocated = 0;
+ w->offsets = NULL;
+ w->need_offsets = need_offsets;
+
+ return 0;
+}
+
+static int bus_message_close_array(sd_bus_message *m, struct bus_container *c) {
+
+ assert(m);
+ assert(c);
+
+ if (!BUS_MESSAGE_IS_GVARIANT(m))
+ return 0;
+
+ if (c->need_offsets) {
+ size_t payload, sz, i;
+ uint8_t *a;
+
+ /* Variable-width arrays */
+
+ payload = c->n_offsets > 0 ? c->offsets[c->n_offsets-1] - c->begin : 0;
+ sz = bus_gvariant_determine_word_size(payload, c->n_offsets);
+
+ a = message_extend_body(m, 1, sz * c->n_offsets, true, false);
+ if (!a)
+ return -ENOMEM;
+
+ for (i = 0; i < c->n_offsets; i++)
+ bus_gvariant_write_word_le(a + sz*i, sz, c->offsets[i] - c->begin);
+ } else {
+ void *a;
+
+ /* Fixed-width or empty arrays */
+
+ a = message_extend_body(m, 1, 0, true, false); /* let's add offset to parent */
+ if (!a)
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+static int bus_message_close_variant(sd_bus_message *m, struct bus_container *c) {
+ uint8_t *a;
+ size_t l;
+
+ assert(m);
+ assert(c);
+ assert(c->signature);
+
+ if (!BUS_MESSAGE_IS_GVARIANT(m))
+ return 0;
+
+ l = strlen(c->signature);
+
+ a = message_extend_body(m, 1, 1 + l, true, false);
+ if (!a)
+ return -ENOMEM;
+
+ a[0] = 0;
+ memcpy(a+1, c->signature, l);
+
+ return 0;
+}
+
+static int bus_message_close_struct(sd_bus_message *m, struct bus_container *c, bool add_offset) {
+ bool fixed_size = true;
+ size_t n_variable = 0;
+ unsigned i = 0;
+ const char *p;
+ uint8_t *a;
+ int r;
+
+ assert(m);
+ assert(c);
+
+ if (!BUS_MESSAGE_IS_GVARIANT(m))
+ return 0;
+
+ p = strempty(c->signature);
+ while (*p != 0) {
+ size_t n;
+
+ r = signature_element_length(p, &n);
+ if (r < 0)
+ return r;
+ else {
+ char t[n+1];
+
+ memcpy(t, p, n);
+ t[n] = 0;
+
+ r = bus_gvariant_is_fixed_size(t);
+ if (r < 0)
+ return r;
+ }
+
+ assert(!c->need_offsets || i <= c->n_offsets);
+
+ /* We need to add an offset for each item that has a
+ * variable size and that is not the last one in the
+ * list */
+ if (r == 0)
+ fixed_size = false;
+ if (r == 0 && p[n] != 0)
+ n_variable++;
+
+ i++;
+ p += n;
+ }
+
+ assert(!c->need_offsets || i == c->n_offsets);
+ assert(c->need_offsets || n_variable == 0);
+
+ if (isempty(c->signature)) {
+ /* The unary type is encoded as fixed 1 byte padding */
+ a = message_extend_body(m, 1, 1, add_offset, false);
+ if (!a)
+ return -ENOMEM;
+
+ *a = 0;
+ } else if (n_variable <= 0) {
+ int alignment = 1;
+
+ /* Structures with fixed-size members only have to be
+ * fixed-size themselves. But gvariant requires all fixed-size
+ * elements to be sized a multiple of their alignment. Hence,
+ * we must *always* add final padding after the last member so
+ * the overall size of the structure is properly aligned. */
+ if (fixed_size)
+ alignment = bus_gvariant_get_alignment(strempty(c->signature));
+
+ assert(alignment > 0);
+
+ a = message_extend_body(m, alignment, 0, add_offset, false);
+ if (!a)
+ return -ENOMEM;
+ } else {
+ size_t sz;
+ unsigned j;
+
+ assert(c->offsets[c->n_offsets-1] == m->body_size);
+
+ sz = bus_gvariant_determine_word_size(m->body_size - c->begin, n_variable);
+
+ a = message_extend_body(m, 1, sz * n_variable, add_offset, false);
+ if (!a)
+ return -ENOMEM;
+
+ p = strempty(c->signature);
+ for (i = 0, j = 0; i < c->n_offsets; i++) {
+ unsigned k;
+ size_t n;
+
+ r = signature_element_length(p, &n);
+ if (r < 0)
+ return r;
+ else {
+ char t[n+1];
+
+ memcpy(t, p, n);
+ t[n] = 0;
+
+ p += n;
+
+ r = bus_gvariant_is_fixed_size(t);
+ if (r < 0)
+ return r;
+ if (r > 0 || p[0] == 0)
+ continue;
+ }
+
+ k = n_variable - 1 - j;
+
+ bus_gvariant_write_word_le(a + k * sz, sz, c->offsets[i] - c->begin);
+
+ j++;
+ }
+ }
+
+ return 0;
+}
+
+_public_ int sd_bus_message_close_container(sd_bus_message *m) {
+ struct bus_container *c;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(m->n_containers > 0, -EINVAL);
+ assert_return(!m->poisoned, -ESTALE);
+
+ c = message_get_container(m);
+
+ if (c->enclosing != SD_BUS_TYPE_ARRAY)
+ if (c->signature && c->signature[c->index] != 0)
+ return -EINVAL;
+
+ m->n_containers--;
+
+ if (c->enclosing == SD_BUS_TYPE_ARRAY)
+ r = bus_message_close_array(m, c);
+ else if (c->enclosing == SD_BUS_TYPE_VARIANT)
+ r = bus_message_close_variant(m, c);
+ else if (c->enclosing == SD_BUS_TYPE_STRUCT || c->enclosing == SD_BUS_TYPE_DICT_ENTRY)
+ r = bus_message_close_struct(m, c, true);
+ else
+ assert_not_reached("Unknown container type");
+
+ free(c->signature);
+ free(c->offsets);
+
+ return r;
+}
+
+typedef struct {
+ const char *types;
+ unsigned n_struct;
+ unsigned n_array;
+} TypeStack;
+
+static int type_stack_push(TypeStack *stack, unsigned max, unsigned *i, const char *types, unsigned n_struct, unsigned n_array) {
+ assert(stack);
+ assert(max > 0);
+
+ if (*i >= max)
+ return -EINVAL;
+
+ stack[*i].types = types;
+ stack[*i].n_struct = n_struct;
+ stack[*i].n_array = n_array;
+ (*i)++;
+
+ return 0;
+}
+
+static int type_stack_pop(TypeStack *stack, unsigned max, unsigned *i, const char **types, unsigned *n_struct, unsigned *n_array) {
+ assert(stack);
+ assert(max > 0);
+ assert(types);
+ assert(n_struct);
+ assert(n_array);
+
+ if (*i <= 0)
+ return 0;
+
+ (*i)--;
+ *types = stack[*i].types;
+ *n_struct = stack[*i].n_struct;
+ *n_array = stack[*i].n_array;
+
+ return 1;
+}
+
+int bus_message_append_ap(
+ sd_bus_message *m,
+ const char *types,
+ va_list ap) {
+
+ unsigned n_array, n_struct;
+ TypeStack stack[BUS_CONTAINER_DEPTH];
+ unsigned stack_ptr = 0;
+ int r;
+
+ assert(m);
+
+ if (!types)
+ return 0;
+
+ n_array = (unsigned) -1;
+ n_struct = strlen(types);
+
+ for (;;) {
+ const char *t;
+
+ if (n_array == 0 || (n_array == (unsigned) -1 && n_struct == 0)) {
+ r = type_stack_pop(stack, ELEMENTSOF(stack), &stack_ptr, &types, &n_struct, &n_array);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ break;
+
+ r = sd_bus_message_close_container(m);
+ if (r < 0)
+ return r;
+
+ continue;
+ }
+
+ t = types;
+ if (n_array != (unsigned) -1)
+ n_array--;
+ else {
+ types++;
+ n_struct--;
+ }
+
+ switch (*t) {
+
+ case SD_BUS_TYPE_BYTE: {
+ uint8_t x;
+
+ x = (uint8_t) va_arg(ap, int);
+ r = sd_bus_message_append_basic(m, *t, &x);
+ break;
+ }
+
+ case SD_BUS_TYPE_BOOLEAN:
+ case SD_BUS_TYPE_INT32:
+ case SD_BUS_TYPE_UINT32:
+ case SD_BUS_TYPE_UNIX_FD: {
+ uint32_t x;
+
+ /* We assume a boolean is the same as int32_t */
+ assert_cc(sizeof(int32_t) == sizeof(int));
+
+ x = va_arg(ap, uint32_t);
+ r = sd_bus_message_append_basic(m, *t, &x);
+ break;
+ }
+
+ case SD_BUS_TYPE_INT16:
+ case SD_BUS_TYPE_UINT16: {
+ uint16_t x;
+
+ x = (uint16_t) va_arg(ap, int);
+ r = sd_bus_message_append_basic(m, *t, &x);
+ break;
+ }
+
+ case SD_BUS_TYPE_INT64:
+ case SD_BUS_TYPE_UINT64: {
+ uint64_t x;
+
+ x = va_arg(ap, uint64_t);
+ r = sd_bus_message_append_basic(m, *t, &x);
+ break;
+ }
+
+ case SD_BUS_TYPE_DOUBLE: {
+ double x;
+
+ x = va_arg(ap, double);
+ r = sd_bus_message_append_basic(m, *t, &x);
+ break;
+ }
+
+ case SD_BUS_TYPE_STRING:
+ case SD_BUS_TYPE_OBJECT_PATH:
+ case SD_BUS_TYPE_SIGNATURE: {
+ const char *x;
+
+ x = va_arg(ap, const char*);
+ r = sd_bus_message_append_basic(m, *t, x);
+ break;
+ }
+
+ case SD_BUS_TYPE_ARRAY: {
+ size_t k;
+
+ r = signature_element_length(t + 1, &k);
+ if (r < 0)
+ return r;
+
+ {
+ char s[k + 1];
+ memcpy(s, t + 1, k);
+ s[k] = 0;
+
+ r = sd_bus_message_open_container(m, SD_BUS_TYPE_ARRAY, s);
+ if (r < 0)
+ return r;
+ }
+
+ if (n_array == (unsigned) -1) {
+ types += k;
+ n_struct -= k;
+ }
+
+ r = type_stack_push(stack, ELEMENTSOF(stack), &stack_ptr, types, n_struct, n_array);
+ if (r < 0)
+ return r;
+
+ types = t + 1;
+ n_struct = k;
+ n_array = va_arg(ap, unsigned);
+
+ break;
+ }
+
+ case SD_BUS_TYPE_VARIANT: {
+ const char *s;
+
+ s = va_arg(ap, const char*);
+ if (!s)
+ return -EINVAL;
+
+ r = sd_bus_message_open_container(m, SD_BUS_TYPE_VARIANT, s);
+ if (r < 0)
+ return r;
+
+ r = type_stack_push(stack, ELEMENTSOF(stack), &stack_ptr, types, n_struct, n_array);
+ if (r < 0)
+ return r;
+
+ types = s;
+ n_struct = strlen(s);
+ n_array = (unsigned) -1;
+
+ break;
+ }
+
+ case SD_BUS_TYPE_STRUCT_BEGIN:
+ case SD_BUS_TYPE_DICT_ENTRY_BEGIN: {
+ size_t k;
+
+ r = signature_element_length(t, &k);
+ if (r < 0)
+ return r;
+
+ {
+ char s[k - 1];
+
+ memcpy(s, t + 1, k - 2);
+ s[k - 2] = 0;
+
+ r = sd_bus_message_open_container(m, *t == SD_BUS_TYPE_STRUCT_BEGIN ? SD_BUS_TYPE_STRUCT : SD_BUS_TYPE_DICT_ENTRY, s);
+ if (r < 0)
+ return r;
+ }
+
+ if (n_array == (unsigned) -1) {
+ types += k - 1;
+ n_struct -= k - 1;
+ }
+
+ r = type_stack_push(stack, ELEMENTSOF(stack), &stack_ptr, types, n_struct, n_array);
+ if (r < 0)
+ return r;
+
+ types = t + 1;
+ n_struct = k - 2;
+ n_array = (unsigned) -1;
+
+ break;
+ }
+
+ default:
+ r = -EINVAL;
+ }
+
+ if (r < 0)
+ return r;
+ }
+
+ return 1;
+}
+
+_public_ int sd_bus_message_append(sd_bus_message *m, const char *types, ...) {
+ va_list ap;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(types, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(!m->poisoned, -ESTALE);
+
+ va_start(ap, types);
+ r = bus_message_append_ap(m, types, ap);
+ va_end(ap);
+
+ return r;
+}
+
+_public_ int sd_bus_message_append_array_space(
+ sd_bus_message *m,
+ char type,
+ size_t size,
+ void **ptr) {
+
+ ssize_t align, sz;
+ void *a;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(bus_type_is_trivial(type) && type != SD_BUS_TYPE_BOOLEAN, -EINVAL);
+ assert_return(ptr || size == 0, -EINVAL);
+ assert_return(!m->poisoned, -ESTALE);
+
+ /* alignment and size of the trivial types (except bool) is
+ * identical for gvariant and dbus1 marshalling */
+ align = bus_type_get_alignment(type);
+ sz = bus_type_get_size(type);
+
+ assert_se(align > 0);
+ assert_se(sz > 0);
+
+ if (size % sz != 0)
+ return -EINVAL;
+
+ r = sd_bus_message_open_container(m, SD_BUS_TYPE_ARRAY, CHAR_TO_STR(type));
+ if (r < 0)
+ return r;
+
+ a = message_extend_body(m, align, size, false, false);
+ if (!a)
+ return -ENOMEM;
+
+ r = sd_bus_message_close_container(m);
+ if (r < 0)
+ return r;
+
+ *ptr = a;
+ return 0;
+}
+
+_public_ int sd_bus_message_append_array(
+ sd_bus_message *m,
+ char type,
+ const void *ptr,
+ size_t size) {
+ int r;
+ void *p;
+
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(bus_type_is_trivial(type), -EINVAL);
+ assert_return(ptr || size == 0, -EINVAL);
+ assert_return(!m->poisoned, -ESTALE);
+
+ r = sd_bus_message_append_array_space(m, type, size, &p);
+ if (r < 0)
+ return r;
+
+ memcpy_safe(p, ptr, size);
+
+ return 0;
+}
+
+_public_ int sd_bus_message_append_array_iovec(
+ sd_bus_message *m,
+ char type,
+ const struct iovec *iov,
+ unsigned n) {
+
+ size_t size;
+ unsigned i;
+ void *p;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(bus_type_is_trivial(type), -EINVAL);
+ assert_return(iov || n == 0, -EINVAL);
+ assert_return(!m->poisoned, -ESTALE);
+
+ size = IOVEC_TOTAL_SIZE(iov, n);
+
+ r = sd_bus_message_append_array_space(m, type, size, &p);
+ if (r < 0)
+ return r;
+
+ for (i = 0; i < n; i++) {
+
+ if (iov[i].iov_base)
+ memcpy(p, iov[i].iov_base, iov[i].iov_len);
+ else
+ memzero(p, iov[i].iov_len);
+
+ p = (uint8_t*) p + iov[i].iov_len;
+ }
+
+ return 0;
+}
+
+_public_ int sd_bus_message_append_array_memfd(
+ sd_bus_message *m,
+ char type,
+ int memfd,
+ uint64_t offset,
+ uint64_t size) {
+
+ _cleanup_close_ int copy_fd = -1;
+ struct bus_body_part *part;
+ ssize_t align, sz;
+ uint64_t real_size;
+ void *a;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(memfd >= 0, -EBADF);
+ assert_return(bus_type_is_trivial(type), -EINVAL);
+ assert_return(size > 0, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(!m->poisoned, -ESTALE);
+
+ r = memfd_set_sealed(memfd);
+ if (r < 0)
+ return r;
+
+ copy_fd = dup(memfd);
+ if (copy_fd < 0)
+ return copy_fd;
+
+ r = memfd_get_size(memfd, &real_size);
+ if (r < 0)
+ return r;
+
+ if (offset == 0 && size == (uint64_t) -1)
+ size = real_size;
+ else if (offset + size > real_size)
+ return -EMSGSIZE;
+
+ align = bus_type_get_alignment(type);
+ sz = bus_type_get_size(type);
+
+ assert_se(align > 0);
+ assert_se(sz > 0);
+
+ if (offset % align != 0)
+ return -EINVAL;
+
+ if (size % sz != 0)
+ return -EINVAL;
+
+ if (size > (uint64_t) (uint32_t) -1)
+ return -EINVAL;
+
+ r = sd_bus_message_open_container(m, SD_BUS_TYPE_ARRAY, CHAR_TO_STR(type));
+ if (r < 0)
+ return r;
+
+ a = message_extend_body(m, align, 0, false, false);
+ if (!a)
+ return -ENOMEM;
+
+ part = message_append_part(m);
+ if (!part)
+ return -ENOMEM;
+
+ part->memfd = copy_fd;
+ part->memfd_offset = offset;
+ part->sealed = true;
+ part->size = size;
+ copy_fd = -1;
+
+ m->body_size += size;
+ message_extend_containers(m, size);
+
+ return sd_bus_message_close_container(m);
+}
+
+_public_ int sd_bus_message_append_string_memfd(
+ sd_bus_message *m,
+ int memfd,
+ uint64_t offset,
+ uint64_t size) {
+
+ _cleanup_close_ int copy_fd = -1;
+ struct bus_body_part *part;
+ struct bus_container *c;
+ uint64_t real_size;
+ void *a;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(memfd >= 0, -EBADF);
+ assert_return(size > 0, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(!m->poisoned, -ESTALE);
+
+ r = memfd_set_sealed(memfd);
+ if (r < 0)
+ return r;
+
+ copy_fd = dup(memfd);
+ if (copy_fd < 0)
+ return copy_fd;
+
+ r = memfd_get_size(memfd, &real_size);
+ if (r < 0)
+ return r;
+
+ if (offset == 0 && size == (uint64_t) -1)
+ size = real_size;
+ else if (offset + size > real_size)
+ return -EMSGSIZE;
+
+ /* We require this to be NUL terminated */
+ if (size == 0)
+ return -EINVAL;
+
+ if (size > (uint64_t) (uint32_t) -1)
+ return -EINVAL;
+
+ c = message_get_container(m);
+ if (c->signature && c->signature[c->index]) {
+ /* Container signature is already set */
+
+ if (c->signature[c->index] != SD_BUS_TYPE_STRING)
+ return -ENXIO;
+ } else {
+ char *e;
+
+ /* Maybe we can append to the signature? But only if this is the top-level container */
+ if (c->enclosing != 0)
+ return -ENXIO;
+
+ e = strextend(&c->signature, CHAR_TO_STR(SD_BUS_TYPE_STRING), NULL);
+ if (!e) {
+ m->poisoned = true;
+ return -ENOMEM;
+ }
+ }
+
+ if (!BUS_MESSAGE_IS_GVARIANT(m)) {
+ a = message_extend_body(m, 4, 4, false, false);
+ if (!a)
+ return -ENOMEM;
+
+ *(uint32_t*) a = size - 1;
+ }
+
+ part = message_append_part(m);
+ if (!part)
+ return -ENOMEM;
+
+ part->memfd = copy_fd;
+ part->memfd_offset = offset;
+ part->sealed = true;
+ part->size = size;
+ copy_fd = -1;
+
+ m->body_size += size;
+ message_extend_containers(m, size);
+
+ if (BUS_MESSAGE_IS_GVARIANT(m)) {
+ r = message_add_offset(m, m->body_size);
+ if (r < 0) {
+ m->poisoned = true;
+ return -ENOMEM;
+ }
+ }
+
+ if (c->enclosing != SD_BUS_TYPE_ARRAY)
+ c->index++;
+
+ return 0;
+}
+
+_public_ int sd_bus_message_append_strv(sd_bus_message *m, char **l) {
+ char **i;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(!m->poisoned, -ESTALE);
+
+ r = sd_bus_message_open_container(m, 'a', "s");
+ if (r < 0)
+ return r;
+
+ STRV_FOREACH(i, l) {
+ r = sd_bus_message_append_basic(m, 's', *i);
+ if (r < 0)
+ return r;
+ }
+
+ return sd_bus_message_close_container(m);
+}
+
+static int bus_message_close_header(sd_bus_message *m) {
+
+ assert(m);
+
+ /* The actual user data is finished now, we just complete the
+ variant and struct now (at least on gvariant). Remember
+ this position, so that during parsing we know where to to
+ put the outer container end. */
+ m->user_body_size = m->body_size;
+
+ if (BUS_MESSAGE_IS_GVARIANT(m)) {
+ const char *signature;
+ size_t sz, l;
+ void *d;
+
+ /* Add offset table to end of fields array */
+ if (m->n_header_offsets >= 1) {
+ uint8_t *a;
+ unsigned i;
+
+ assert(m->fields_size == m->header_offsets[m->n_header_offsets-1]);
+
+ sz = bus_gvariant_determine_word_size(m->fields_size, m->n_header_offsets);
+ a = message_extend_fields(m, 1, sz * m->n_header_offsets, false);
+ if (!a)
+ return -ENOMEM;
+
+ for (i = 0; i < m->n_header_offsets; i++)
+ bus_gvariant_write_word_le(a + sz*i, sz, m->header_offsets[i]);
+ }
+
+ /* Add gvariant NUL byte plus signature to the end of
+ * the body, followed by the final offset pointing to
+ * the end of the fields array */
+
+ signature = strempty(m->root_container.signature);
+ l = strlen(signature);
+
+ sz = bus_gvariant_determine_word_size(sizeof(struct bus_header) + ALIGN8(m->fields_size) + m->body_size + 1 + l + 2, 1);
+ d = message_extend_body(m, 1, 1 + l + 2 + sz, false, true);
+ if (!d)
+ return -ENOMEM;
+
+ *(uint8_t*) d = 0;
+ *((uint8_t*) d + 1) = SD_BUS_TYPE_STRUCT_BEGIN;
+ memcpy((uint8_t*) d + 2, signature, l);
+ *((uint8_t*) d + 1 + l + 1) = SD_BUS_TYPE_STRUCT_END;
+
+ bus_gvariant_write_word_le((uint8_t*) d + 1 + l + 2, sz, sizeof(struct bus_header) + m->fields_size);
+
+ m->footer = d;
+ m->footer_accessible = 1 + l + 2 + sz;
+ } else {
+ m->header->dbus1.fields_size = m->fields_size;
+ m->header->dbus1.body_size = m->body_size;
+ }
+
+ return 0;
+}
+
+int bus_message_seal(sd_bus_message *m, uint64_t cookie, usec_t timeout) {
+ struct bus_body_part *part;
+ size_t a;
+ unsigned i;
+ int r;
+
+ assert(m);
+
+ if (m->sealed)
+ return -EPERM;
+
+ if (m->n_containers > 0)
+ return -EBADMSG;
+
+ if (m->poisoned)
+ return -ESTALE;
+
+ if (cookie > 0xffffffffULL &&
+ !BUS_MESSAGE_IS_GVARIANT(m))
+ return -EOPNOTSUPP;
+
+ /* In vtables the return signature of method calls is listed,
+ * let's check if they match if this is a response */
+ if (m->header->type == SD_BUS_MESSAGE_METHOD_RETURN &&
+ m->enforced_reply_signature &&
+ !streq(strempty(m->root_container.signature), m->enforced_reply_signature))
+ return -ENOMSG;
+
+ /* If gvariant marshalling is used we need to close the body structure */
+ r = bus_message_close_struct(m, &m->root_container, false);
+ if (r < 0)
+ return r;
+
+ /* If there's a non-trivial signature set, then add it in
+ * here, but only on dbus1 */
+ if (!isempty(m->root_container.signature) && !BUS_MESSAGE_IS_GVARIANT(m)) {
+ r = message_append_field_signature(m, BUS_MESSAGE_HEADER_SIGNATURE, m->root_container.signature, NULL);
+ if (r < 0)
+ return r;
+ }
+
+ if (m->n_fds > 0) {
+ r = message_append_field_uint32(m, BUS_MESSAGE_HEADER_UNIX_FDS, m->n_fds);
+ if (r < 0)
+ return r;
+ }
+
+ r = bus_message_close_header(m);
+ if (r < 0)
+ return r;
+
+ if (BUS_MESSAGE_IS_GVARIANT(m))
+ m->header->dbus2.cookie = cookie;
+ else
+ m->header->dbus1.serial = (uint32_t) cookie;
+
+ m->timeout = m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED ? 0 : timeout;
+
+ /* Add padding at the end of the fields part, since we know
+ * the body needs to start at an 8 byte alignment. We made
+ * sure we allocated enough space for this, so all we need to
+ * do here is to zero it out. */
+ a = ALIGN8(m->fields_size) - m->fields_size;
+ if (a > 0)
+ memzero((uint8_t*) BUS_MESSAGE_FIELDS(m) + m->fields_size, a);
+
+ /* If this is something we can send as memfd, then let's seal
+ the memfd now. Note that we can send memfds as payload only
+ for directed messages, and not for broadcasts. */
+ if (m->destination && m->bus->use_memfd) {
+ MESSAGE_FOREACH_PART(part, i, m)
+ if (part->memfd >= 0 &&
+ !part->sealed &&
+ (part->size > MEMFD_MIN_SIZE || m->bus->use_memfd < 0) &&
+ part != m->body_end) { /* The last part may never be sent as memfd */
+ uint64_t sz;
+
+ /* Try to seal it if that makes
+ * sense. First, unmap our own map to
+ * make sure we don't keep it busy. */
+ bus_body_part_unmap(part);
+
+ /* Then, sync up real memfd size */
+ sz = part->size;
+ r = memfd_set_size(part->memfd, sz);
+ if (r < 0)
+ return r;
+
+ /* Finally, try to seal */
+ if (memfd_set_sealed(part->memfd) >= 0)
+ part->sealed = true;
+ }
+ }
+
+ m->root_container.end = m->user_body_size;
+ m->root_container.index = 0;
+ m->root_container.offset_index = 0;
+ m->root_container.item_size = m->root_container.n_offsets > 0 ? m->root_container.offsets[0] : 0;
+
+ m->sealed = true;
+
+ return 0;
+}
+
+int bus_body_part_map(struct bus_body_part *part) {
+ void *p;
+ size_t psz, shift;
+
+ assert_se(part);
+
+ if (part->data)
+ return 0;
+
+ if (part->size <= 0)
+ return 0;
+
+ /* For smaller zero parts (as used for padding) we don't need to map anything... */
+ if (part->memfd < 0 && part->is_zero && part->size < 8) {
+ static const uint8_t zeroes[7] = { };
+ part->data = (void*) zeroes;
+ return 0;
+ }
+
+ shift = part->memfd_offset - ((part->memfd_offset / page_size()) * page_size());
+ psz = PAGE_ALIGN(part->size + shift);
+
+ if (part->memfd >= 0)
+ p = mmap(NULL, psz, PROT_READ, MAP_PRIVATE, part->memfd, part->memfd_offset - shift);
+ else if (part->is_zero)
+ p = mmap(NULL, psz, PROT_READ, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
+ else
+ return -EINVAL;
+
+ if (p == MAP_FAILED)
+ return -errno;
+
+ part->mapped = psz;
+ part->mmap_begin = p;
+ part->data = (uint8_t*) p + shift;
+ part->munmap_this = true;
+
+ return 0;
+}
+
+void bus_body_part_unmap(struct bus_body_part *part) {
+
+ assert_se(part);
+
+ if (part->memfd < 0)
+ return;
+
+ if (!part->mmap_begin)
+ return;
+
+ if (!part->munmap_this)
+ return;
+
+ assert_se(munmap(part->mmap_begin, part->mapped) == 0);
+
+ part->mmap_begin = NULL;
+ part->data = NULL;
+ part->mapped = 0;
+ part->munmap_this = false;
+
+ return;
+}
+
+static int buffer_peek(const void *p, uint32_t sz, size_t *rindex, size_t align, size_t nbytes, void **r) {
+ size_t k, start, end;
+
+ assert(rindex);
+ assert(align > 0);
+
+ start = ALIGN_TO((size_t) *rindex, align);
+ end = start + nbytes;
+
+ if (end > sz)
+ return -EBADMSG;
+
+ /* Verify that padding is 0 */
+ for (k = *rindex; k < start; k++)
+ if (((const uint8_t*) p)[k] != 0)
+ return -EBADMSG;
+
+ if (r)
+ *r = (uint8_t*) p + start;
+
+ *rindex = end;
+
+ return 1;
+}
+
+static bool message_end_of_signature(sd_bus_message *m) {
+ struct bus_container *c;
+
+ assert(m);
+
+ c = message_get_container(m);
+ return !c->signature || c->signature[c->index] == 0;
+}
+
+static bool message_end_of_array(sd_bus_message *m, size_t index) {
+ struct bus_container *c;
+
+ assert(m);
+
+ c = message_get_container(m);
+ if (c->enclosing != SD_BUS_TYPE_ARRAY)
+ return false;
+
+ if (BUS_MESSAGE_IS_GVARIANT(m))
+ return index >= c->end;
+ else {
+ assert(c->array_size);
+ return index >= c->begin + BUS_MESSAGE_BSWAP32(m, *c->array_size);
+ }
+}
+
+_public_ int sd_bus_message_at_end(sd_bus_message *m, int complete) {
+ assert_return(m, -EINVAL);
+ assert_return(m->sealed, -EPERM);
+
+ if (complete && m->n_containers > 0)
+ return false;
+
+ if (message_end_of_signature(m))
+ return true;
+
+ if (message_end_of_array(m, m->rindex))
+ return true;
+
+ return false;
+}
+
+static struct bus_body_part* find_part(sd_bus_message *m, size_t index, size_t sz, void **p) {
+ struct bus_body_part *part;
+ size_t begin;
+ int r;
+
+ assert(m);
+
+ if (m->cached_rindex_part && index >= m->cached_rindex_part_begin) {
+ part = m->cached_rindex_part;
+ begin = m->cached_rindex_part_begin;
+ } else {
+ part = &m->body;
+ begin = 0;
+ }
+
+ while (part) {
+ if (index < begin)
+ return NULL;
+
+ if (index + sz <= begin + part->size) {
+
+ r = bus_body_part_map(part);
+ if (r < 0)
+ return NULL;
+
+ if (p)
+ *p = (uint8_t*) part->data + index - begin;
+
+ m->cached_rindex_part = part;
+ m->cached_rindex_part_begin = begin;
+
+ return part;
+ }
+
+ begin += part->size;
+ part = part->next;
+ }
+
+ return NULL;
+}
+
+static int container_next_item(sd_bus_message *m, struct bus_container *c, size_t *rindex) {
+ int r;
+
+ assert(m);
+ assert(c);
+ assert(rindex);
+
+ if (!BUS_MESSAGE_IS_GVARIANT(m))
+ return 0;
+
+ if (c->enclosing == SD_BUS_TYPE_ARRAY) {
+ int sz;
+
+ sz = bus_gvariant_get_size(c->signature);
+ if (sz < 0) {
+ int alignment;
+
+ if (c->offset_index+1 >= c->n_offsets)
+ goto end;
+
+ /* Variable-size array */
+
+ alignment = bus_gvariant_get_alignment(c->signature);
+ assert(alignment > 0);
+
+ *rindex = ALIGN_TO(c->offsets[c->offset_index], alignment);
+ c->item_size = c->offsets[c->offset_index+1] - *rindex;
+ } else {
+
+ if (c->offset_index+1 >= (c->end-c->begin)/sz)
+ goto end;
+
+ /* Fixed-size array */
+ *rindex = c->begin + (c->offset_index+1) * sz;
+ c->item_size = sz;
+ }
+
+ c->offset_index++;
+
+ } else if (c->enclosing == 0 ||
+ c->enclosing == SD_BUS_TYPE_STRUCT ||
+ c->enclosing == SD_BUS_TYPE_DICT_ENTRY) {
+
+ int alignment;
+ size_t n, j;
+
+ if (c->offset_index+1 >= c->n_offsets)
+ goto end;
+
+ r = signature_element_length(c->signature + c->index, &n);
+ if (r < 0)
+ return r;
+
+ r = signature_element_length(c->signature + c->index + n, &j);
+ if (r < 0)
+ return r;
+ else {
+ char t[j+1];
+ memcpy(t, c->signature + c->index + n, j);
+ t[j] = 0;
+
+ alignment = bus_gvariant_get_alignment(t);
+ }
+
+ assert(alignment > 0);
+
+ *rindex = ALIGN_TO(c->offsets[c->offset_index], alignment);
+ c->item_size = c->offsets[c->offset_index+1] - *rindex;
+
+ c->offset_index++;
+
+ } else if (c->enclosing == SD_BUS_TYPE_VARIANT)
+ goto end;
+ else
+ assert_not_reached("Unknown container type");
+
+ return 0;
+
+end:
+ /* Reached the end */
+ *rindex = c->end;
+ c->item_size = 0;
+ return 0;
+}
+
+
+static int message_peek_body(
+ sd_bus_message *m,
+ size_t *rindex,
+ size_t align,
+ size_t nbytes,
+ void **ret) {
+
+ size_t k, start, end, padding;
+ struct bus_body_part *part;
+ uint8_t *q;
+
+ assert(m);
+ assert(rindex);
+ assert(align > 0);
+
+ start = ALIGN_TO((size_t) *rindex, align);
+ padding = start - *rindex;
+ end = start + nbytes;
+
+ if (end > m->user_body_size)
+ return -EBADMSG;
+
+ part = find_part(m, *rindex, padding, (void**) &q);
+ if (!part)
+ return -EBADMSG;
+
+ if (q) {
+ /* Verify padding */
+ for (k = 0; k < padding; k++)
+ if (q[k] != 0)
+ return -EBADMSG;
+ }
+
+ part = find_part(m, start, nbytes, (void**) &q);
+ if (!part || (nbytes > 0 && !q))
+ return -EBADMSG;
+
+ *rindex = end;
+
+ if (ret)
+ *ret = q;
+
+ return 0;
+}
+
+static bool validate_nul(const char *s, size_t l) {
+
+ /* Check for NUL chars in the string */
+ if (memchr(s, 0, l))
+ return false;
+
+ /* Check for NUL termination */
+ if (s[l] != 0)
+ return false;
+
+ return true;
+}
+
+static bool validate_string(const char *s, size_t l) {
+
+ if (!validate_nul(s, l))
+ return false;
+
+ /* Check if valid UTF8 */
+ if (!utf8_is_valid(s))
+ return false;
+
+ return true;
+}
+
+static bool validate_signature(const char *s, size_t l) {
+
+ if (!validate_nul(s, l))
+ return false;
+
+ /* Check if valid signature */
+ if (!signature_is_valid(s, true))
+ return false;
+
+ return true;
+}
+
+static bool validate_object_path(const char *s, size_t l) {
+
+ if (!validate_nul(s, l))
+ return false;
+
+ if (!object_path_is_valid(s))
+ return false;
+
+ return true;
+}
+
+_public_ int sd_bus_message_read_basic(sd_bus_message *m, char type, void *p) {
+ struct bus_container *c;
+ size_t rindex;
+ void *q;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->sealed, -EPERM);
+ assert_return(bus_type_is_basic(type), -EINVAL);
+
+ if (message_end_of_signature(m))
+ return -ENXIO;
+
+ if (message_end_of_array(m, m->rindex))
+ return 0;
+
+ c = message_get_container(m);
+ if (c->signature[c->index] != type)
+ return -ENXIO;
+
+ rindex = m->rindex;
+
+ if (BUS_MESSAGE_IS_GVARIANT(m)) {
+
+ if (IN_SET(type, SD_BUS_TYPE_STRING, SD_BUS_TYPE_OBJECT_PATH, SD_BUS_TYPE_SIGNATURE)) {
+ bool ok;
+
+ r = message_peek_body(m, &rindex, 1, c->item_size, &q);
+ if (r < 0)
+ return r;
+
+ if (type == SD_BUS_TYPE_STRING)
+ ok = validate_string(q, c->item_size-1);
+ else if (type == SD_BUS_TYPE_OBJECT_PATH)
+ ok = validate_object_path(q, c->item_size-1);
+ else
+ ok = validate_signature(q, c->item_size-1);
+
+ if (!ok)
+ return -EBADMSG;
+
+ if (p)
+ *(const char**) p = q;
+ } else {
+ int sz, align;
+
+ sz = bus_gvariant_get_size(CHAR_TO_STR(type));
+ assert(sz > 0);
+ if ((size_t) sz != c->item_size)
+ return -EBADMSG;
+
+ align = bus_gvariant_get_alignment(CHAR_TO_STR(type));
+ assert(align > 0);
+
+ r = message_peek_body(m, &rindex, align, c->item_size, &q);
+ if (r < 0)
+ return r;
+
+ switch (type) {
+
+ case SD_BUS_TYPE_BYTE:
+ if (p)
+ *(uint8_t*) p = *(uint8_t*) q;
+ break;
+
+ case SD_BUS_TYPE_BOOLEAN:
+ if (p)
+ *(int*) p = !!*(uint8_t*) q;
+ break;
+
+ case SD_BUS_TYPE_INT16:
+ case SD_BUS_TYPE_UINT16:
+ if (p)
+ *(uint16_t*) p = BUS_MESSAGE_BSWAP16(m, *(uint16_t*) q);
+ break;
+
+ case SD_BUS_TYPE_INT32:
+ case SD_BUS_TYPE_UINT32:
+ if (p)
+ *(uint32_t*) p = BUS_MESSAGE_BSWAP32(m, *(uint32_t*) q);
+ break;
+
+ case SD_BUS_TYPE_INT64:
+ case SD_BUS_TYPE_UINT64:
+ case SD_BUS_TYPE_DOUBLE:
+ if (p)
+ *(uint64_t*) p = BUS_MESSAGE_BSWAP64(m, *(uint64_t*) q);
+ break;
+
+ case SD_BUS_TYPE_UNIX_FD: {
+ uint32_t j;
+
+ j = BUS_MESSAGE_BSWAP32(m, *(uint32_t*) q);
+ if (j >= m->n_fds)
+ return -EBADMSG;
+
+ if (p)
+ *(int*) p = m->fds[j];
+
+ break;
+ }
+
+ default:
+ assert_not_reached("unexpected type");
+ }
+ }
+
+ r = container_next_item(m, c, &rindex);
+ if (r < 0)
+ return r;
+ } else {
+
+ if (IN_SET(type, SD_BUS_TYPE_STRING, SD_BUS_TYPE_OBJECT_PATH)) {
+ uint32_t l;
+ bool ok;
+
+ r = message_peek_body(m, &rindex, 4, 4, &q);
+ if (r < 0)
+ return r;
+
+ l = BUS_MESSAGE_BSWAP32(m, *(uint32_t*) q);
+ r = message_peek_body(m, &rindex, 1, l+1, &q);
+ if (r < 0)
+ return r;
+
+ if (type == SD_BUS_TYPE_OBJECT_PATH)
+ ok = validate_object_path(q, l);
+ else
+ ok = validate_string(q, l);
+ if (!ok)
+ return -EBADMSG;
+
+ if (p)
+ *(const char**) p = q;
+
+ } else if (type == SD_BUS_TYPE_SIGNATURE) {
+ uint8_t l;
+
+ r = message_peek_body(m, &rindex, 1, 1, &q);
+ if (r < 0)
+ return r;
+
+ l = *(uint8_t*) q;
+ r = message_peek_body(m, &rindex, 1, l+1, &q);
+ if (r < 0)
+ return r;
+
+ if (!validate_signature(q, l))
+ return -EBADMSG;
+
+ if (p)
+ *(const char**) p = q;
+
+ } else {
+ ssize_t sz, align;
+
+ align = bus_type_get_alignment(type);
+ assert(align > 0);
+
+ sz = bus_type_get_size(type);
+ assert(sz > 0);
+
+ r = message_peek_body(m, &rindex, align, sz, &q);
+ if (r < 0)
+ return r;
+
+ switch (type) {
+
+ case SD_BUS_TYPE_BYTE:
+ if (p)
+ *(uint8_t*) p = *(uint8_t*) q;
+ break;
+
+ case SD_BUS_TYPE_BOOLEAN:
+ if (p)
+ *(int*) p = !!*(uint32_t*) q;
+ break;
+
+ case SD_BUS_TYPE_INT16:
+ case SD_BUS_TYPE_UINT16:
+ if (p)
+ *(uint16_t*) p = BUS_MESSAGE_BSWAP16(m, *(uint16_t*) q);
+ break;
+
+ case SD_BUS_TYPE_INT32:
+ case SD_BUS_TYPE_UINT32:
+ if (p)
+ *(uint32_t*) p = BUS_MESSAGE_BSWAP32(m, *(uint32_t*) q);
+ break;
+
+ case SD_BUS_TYPE_INT64:
+ case SD_BUS_TYPE_UINT64:
+ case SD_BUS_TYPE_DOUBLE:
+ if (p)
+ *(uint64_t*) p = BUS_MESSAGE_BSWAP64(m, *(uint64_t*) q);
+ break;
+
+ case SD_BUS_TYPE_UNIX_FD: {
+ uint32_t j;
+
+ j = BUS_MESSAGE_BSWAP32(m, *(uint32_t*) q);
+ if (j >= m->n_fds)
+ return -EBADMSG;
+
+ if (p)
+ *(int*) p = m->fds[j];
+ break;
+ }
+
+ default:
+ assert_not_reached("Unknown basic type...");
+ }
+ }
+ }
+
+ m->rindex = rindex;
+
+ if (c->enclosing != SD_BUS_TYPE_ARRAY)
+ c->index++;
+
+ return 1;
+}
+
+static int bus_message_enter_array(
+ sd_bus_message *m,
+ struct bus_container *c,
+ const char *contents,
+ uint32_t **array_size,
+ size_t *item_size,
+ size_t **offsets,
+ size_t *n_offsets) {
+
+ size_t rindex;
+ void *q;
+ int r, alignment;
+
+ assert(m);
+ assert(c);
+ assert(contents);
+ assert(array_size);
+ assert(item_size);
+ assert(offsets);
+ assert(n_offsets);
+
+ if (!signature_is_single(contents, true))
+ return -EINVAL;
+
+ if (!c->signature || c->signature[c->index] == 0)
+ return -ENXIO;
+
+ if (c->signature[c->index] != SD_BUS_TYPE_ARRAY)
+ return -ENXIO;
+
+ if (!startswith(c->signature + c->index + 1, contents))
+ return -ENXIO;
+
+ rindex = m->rindex;
+
+ if (!BUS_MESSAGE_IS_GVARIANT(m)) {
+ /* dbus1 */
+
+ r = message_peek_body(m, &rindex, 4, 4, &q);
+ if (r < 0)
+ return r;
+
+ if (BUS_MESSAGE_BSWAP32(m, *(uint32_t*) q) > BUS_ARRAY_MAX_SIZE)
+ return -EBADMSG;
+
+ alignment = bus_type_get_alignment(contents[0]);
+ if (alignment < 0)
+ return alignment;
+
+ r = message_peek_body(m, &rindex, alignment, 0, NULL);
+ if (r < 0)
+ return r;
+
+ *array_size = (uint32_t*) q;
+
+ } else if (c->item_size <= 0) {
+
+ /* gvariant: empty array */
+ *item_size = 0;
+ *offsets = NULL;
+ *n_offsets = 0;
+
+ } else if (bus_gvariant_is_fixed_size(contents)) {
+
+ /* gvariant: fixed length array */
+ *item_size = bus_gvariant_get_size(contents);
+ *offsets = NULL;
+ *n_offsets = 0;
+
+ } else {
+ size_t where, p = 0, framing, sz;
+ unsigned i;
+
+ /* gvariant: variable length array */
+ sz = bus_gvariant_determine_word_size(c->item_size, 0);
+
+ where = rindex + c->item_size - sz;
+ r = message_peek_body(m, &where, 1, sz, &q);
+ if (r < 0)
+ return r;
+
+ framing = bus_gvariant_read_word_le(q, sz);
+ if (framing > c->item_size - sz)
+ return -EBADMSG;
+ if ((c->item_size - framing) % sz != 0)
+ return -EBADMSG;
+
+ *n_offsets = (c->item_size - framing) / sz;
+
+ where = rindex + framing;
+ r = message_peek_body(m, &where, 1, *n_offsets * sz, &q);
+ if (r < 0)
+ return r;
+
+ *offsets = new(size_t, *n_offsets);
+ if (!*offsets)
+ return -ENOMEM;
+
+ for (i = 0; i < *n_offsets; i++) {
+ size_t x;
+
+ x = bus_gvariant_read_word_le((uint8_t*) q + i * sz, sz);
+ if (x > c->item_size - sz)
+ return -EBADMSG;
+ if (x < p)
+ return -EBADMSG;
+
+ (*offsets)[i] = rindex + x;
+ p = x;
+ }
+
+ *item_size = (*offsets)[0] - rindex;
+ }
+
+ m->rindex = rindex;
+
+ if (c->enclosing != SD_BUS_TYPE_ARRAY)
+ c->index += 1 + strlen(contents);
+
+ return 1;
+}
+
+static int bus_message_enter_variant(
+ sd_bus_message *m,
+ struct bus_container *c,
+ const char *contents,
+ size_t *item_size) {
+
+ size_t rindex;
+ uint8_t l;
+ void *q;
+ int r;
+
+ assert(m);
+ assert(c);
+ assert(contents);
+ assert(item_size);
+
+ if (!signature_is_single(contents, false))
+ return -EINVAL;
+
+ if (*contents == SD_BUS_TYPE_DICT_ENTRY_BEGIN)
+ return -EINVAL;
+
+ if (!c->signature || c->signature[c->index] == 0)
+ return -ENXIO;
+
+ if (c->signature[c->index] != SD_BUS_TYPE_VARIANT)
+ return -ENXIO;
+
+ rindex = m->rindex;
+
+ if (BUS_MESSAGE_IS_GVARIANT(m)) {
+ size_t k, where;
+
+ k = strlen(contents);
+ if (1+k > c->item_size)
+ return -EBADMSG;
+
+ where = rindex + c->item_size - (1+k);
+ r = message_peek_body(m, &where, 1, 1+k, &q);
+ if (r < 0)
+ return r;
+
+ if (*(char*) q != 0)
+ return -EBADMSG;
+
+ if (memcmp((uint8_t*) q+1, contents, k))
+ return -ENXIO;
+
+ *item_size = c->item_size - (1+k);
+
+ } else {
+ r = message_peek_body(m, &rindex, 1, 1, &q);
+ if (r < 0)
+ return r;
+
+ l = *(uint8_t*) q;
+ r = message_peek_body(m, &rindex, 1, l+1, &q);
+ if (r < 0)
+ return r;
+
+ if (!validate_signature(q, l))
+ return -EBADMSG;
+
+ if (!streq(q, contents))
+ return -ENXIO;
+ }
+
+ m->rindex = rindex;
+
+ if (c->enclosing != SD_BUS_TYPE_ARRAY)
+ c->index++;
+
+ return 1;
+}
+
+static int build_struct_offsets(
+ sd_bus_message *m,
+ const char *signature,
+ size_t size,
+ size_t *item_size,
+ size_t **offsets,
+ size_t *n_offsets) {
+
+ unsigned n_variable = 0, n_total = 0, v;
+ size_t previous = 0, where;
+ const char *p;
+ size_t sz;
+ void *q;
+ int r;
+
+ assert(m);
+ assert(item_size);
+ assert(offsets);
+ assert(n_offsets);
+
+ if (isempty(signature)) {
+ /* Unary type is encoded as *fixed* 1 byte padding */
+ r = message_peek_body(m, &m->rindex, 1, 1, &q);
+ if (r < 0)
+ return r;
+
+ if (*(uint8_t *) q != 0)
+ return -EBADMSG;
+
+ *item_size = 0;
+ *offsets = NULL;
+ *n_offsets = 0;
+ return 0;
+ }
+
+ sz = bus_gvariant_determine_word_size(size, 0);
+ if (sz <= 0)
+ return -EBADMSG;
+
+ /* First, loop over signature and count variable elements and
+ * elements in general. We use this to know how large the
+ * offset array is at the end of the structure. Note that
+ * GVariant only stores offsets for all variable size elements
+ * that are not the last item. */
+
+ p = signature;
+ while (*p != 0) {
+ size_t n;
+
+ r = signature_element_length(p, &n);
+ if (r < 0)
+ return r;
+ else {
+ char t[n+1];
+
+ memcpy(t, p, n);
+ t[n] = 0;
+
+ r = bus_gvariant_is_fixed_size(t);
+ }
+
+ if (r < 0)
+ return r;
+ if (r == 0 && p[n] != 0) /* except the last item */
+ n_variable++;
+ n_total++;
+
+ p += n;
+ }
+
+ if (size < n_variable * sz)
+ return -EBADMSG;
+
+ where = m->rindex + size - (n_variable * sz);
+ r = message_peek_body(m, &where, 1, n_variable * sz, &q);
+ if (r < 0)
+ return r;
+
+ v = n_variable;
+
+ *offsets = new(size_t, n_total);
+ if (!*offsets)
+ return -ENOMEM;
+
+ *n_offsets = 0;
+
+ /* Second, loop again and build an offset table */
+ p = signature;
+ while (*p != 0) {
+ size_t n, offset;
+ int k;
+
+ r = signature_element_length(p, &n);
+ if (r < 0)
+ return r;
+ else {
+ char t[n+1];
+
+ memcpy(t, p, n);
+ t[n] = 0;
+
+ k = bus_gvariant_get_size(t);
+ if (k < 0) {
+ size_t x;
+
+ /* variable size */
+ if (v > 0) {
+ v--;
+
+ x = bus_gvariant_read_word_le((uint8_t*) q + v*sz, sz);
+ if (x >= size)
+ return -EBADMSG;
+ if (m->rindex + x < previous)
+ return -EBADMSG;
+ } else
+ /* The last item's end
+ * is determined from
+ * the start of the
+ * offset array */
+ x = size - (n_variable * sz);
+
+ offset = m->rindex + x;
+
+ } else {
+ size_t align;
+
+ /* fixed size */
+ align = bus_gvariant_get_alignment(t);
+ assert(align > 0);
+
+ offset = (*n_offsets == 0 ? m->rindex : ALIGN_TO((*offsets)[*n_offsets-1], align)) + k;
+ }
+ }
+
+ previous = (*offsets)[(*n_offsets)++] = offset;
+ p += n;
+ }
+
+ assert(v == 0);
+ assert(*n_offsets == n_total);
+
+ *item_size = (*offsets)[0] - m->rindex;
+ return 0;
+}
+
+static int enter_struct_or_dict_entry(
+ sd_bus_message *m,
+ struct bus_container *c,
+ const char *contents,
+ size_t *item_size,
+ size_t **offsets,
+ size_t *n_offsets) {
+
+ int r;
+
+ assert(m);
+ assert(c);
+ assert(contents);
+ assert(item_size);
+ assert(offsets);
+ assert(n_offsets);
+
+ if (!BUS_MESSAGE_IS_GVARIANT(m)) {
+
+ /* dbus1 */
+ r = message_peek_body(m, &m->rindex, 8, 0, NULL);
+ if (r < 0)
+ return r;
+
+ } else
+ /* gvariant with contents */
+ return build_struct_offsets(m, contents, c->item_size, item_size, offsets, n_offsets);
+
+ return 0;
+}
+
+static int bus_message_enter_struct(
+ sd_bus_message *m,
+ struct bus_container *c,
+ const char *contents,
+ size_t *item_size,
+ size_t **offsets,
+ size_t *n_offsets) {
+
+ size_t l;
+ int r;
+
+ assert(m);
+ assert(c);
+ assert(contents);
+ assert(item_size);
+ assert(offsets);
+ assert(n_offsets);
+
+ if (!signature_is_valid(contents, false))
+ return -EINVAL;
+
+ if (!c->signature || c->signature[c->index] == 0)
+ return -ENXIO;
+
+ l = strlen(contents);
+
+ if (c->signature[c->index] != SD_BUS_TYPE_STRUCT_BEGIN ||
+ !startswith(c->signature + c->index + 1, contents) ||
+ c->signature[c->index + 1 + l] != SD_BUS_TYPE_STRUCT_END)
+ return -ENXIO;
+
+ r = enter_struct_or_dict_entry(m, c, contents, item_size, offsets, n_offsets);
+ if (r < 0)
+ return r;
+
+ if (c->enclosing != SD_BUS_TYPE_ARRAY)
+ c->index += 1 + l + 1;
+
+ return 1;
+}
+
+static int bus_message_enter_dict_entry(
+ sd_bus_message *m,
+ struct bus_container *c,
+ const char *contents,
+ size_t *item_size,
+ size_t **offsets,
+ size_t *n_offsets) {
+
+ size_t l;
+ int r;
+
+ assert(m);
+ assert(c);
+ assert(contents);
+
+ if (!signature_is_pair(contents))
+ return -EINVAL;
+
+ if (c->enclosing != SD_BUS_TYPE_ARRAY)
+ return -ENXIO;
+
+ if (!c->signature || c->signature[c->index] == 0)
+ return 0;
+
+ l = strlen(contents);
+
+ if (c->signature[c->index] != SD_BUS_TYPE_DICT_ENTRY_BEGIN ||
+ !startswith(c->signature + c->index + 1, contents) ||
+ c->signature[c->index + 1 + l] != SD_BUS_TYPE_DICT_ENTRY_END)
+ return -ENXIO;
+
+ r = enter_struct_or_dict_entry(m, c, contents, item_size, offsets, n_offsets);
+ if (r < 0)
+ return r;
+
+ if (c->enclosing != SD_BUS_TYPE_ARRAY)
+ c->index += 1 + l + 1;
+
+ return 1;
+}
+
+_public_ int sd_bus_message_enter_container(sd_bus_message *m,
+ char type,
+ const char *contents) {
+ struct bus_container *c, *w;
+ uint32_t *array_size = NULL;
+ char *signature;
+ size_t before;
+ size_t *offsets = NULL;
+ size_t n_offsets = 0, item_size = 0;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->sealed, -EPERM);
+ assert_return(type != 0 || !contents, -EINVAL);
+
+ if (type == 0 || !contents) {
+ const char *cc;
+ char tt;
+
+ /* Allow entering into anonymous containers */
+ r = sd_bus_message_peek_type(m, &tt, &cc);
+ if (r < 0)
+ return r;
+
+ if (type != 0 && type != tt)
+ return -ENXIO;
+
+ if (contents && !streq(contents, cc))
+ return -ENXIO;
+
+ type = tt;
+ contents = cc;
+ }
+
+ /*
+ * We enforce a global limit on container depth, that is much
+ * higher than the 32 structs and 32 arrays the specification
+ * mandates. This is simpler to implement for us, and we need
+ * this only to ensure our container array doesn't grow
+ * without bounds. We are happy to return any data from a
+ * message as long as the data itself is valid, even if the
+ * overall message might be not.
+ *
+ * Note that the message signature is validated when
+ * parsing the headers, and that validation does check the
+ * 32/32 limit.
+ *
+ * Note that the specification defines no limits on the depth
+ * of stacked variants, but we do.
+ */
+ if (m->n_containers >= BUS_CONTAINER_DEPTH)
+ return -EBADMSG;
+
+ if (!GREEDY_REALLOC(m->containers, m->containers_allocated, m->n_containers + 1))
+ return -ENOMEM;
+
+ if (message_end_of_signature(m))
+ return -ENXIO;
+
+ if (message_end_of_array(m, m->rindex))
+ return 0;
+
+ c = message_get_container(m);
+
+ signature = strdup(contents);
+ if (!signature)
+ return -ENOMEM;
+
+ c->saved_index = c->index;
+ before = m->rindex;
+
+ if (type == SD_BUS_TYPE_ARRAY)
+ r = bus_message_enter_array(m, c, contents, &array_size, &item_size, &offsets, &n_offsets);
+ else if (type == SD_BUS_TYPE_VARIANT)
+ r = bus_message_enter_variant(m, c, contents, &item_size);
+ else if (type == SD_BUS_TYPE_STRUCT)
+ r = bus_message_enter_struct(m, c, contents, &item_size, &offsets, &n_offsets);
+ else if (type == SD_BUS_TYPE_DICT_ENTRY)
+ r = bus_message_enter_dict_entry(m, c, contents, &item_size, &offsets, &n_offsets);
+ else
+ r = -EINVAL;
+
+ if (r <= 0) {
+ free(signature);
+ free(offsets);
+ return r;
+ }
+
+ /* OK, let's fill it in */
+ w = m->containers + m->n_containers++;
+ w->enclosing = type;
+ w->signature = signature;
+ w->peeked_signature = NULL;
+ w->index = 0;
+
+ w->before = before;
+ w->begin = m->rindex;
+
+ /* Unary type has fixed size of 1, but virtual size of 0 */
+ if (BUS_MESSAGE_IS_GVARIANT(m) &&
+ type == SD_BUS_TYPE_STRUCT &&
+ isempty(signature))
+ w->end = m->rindex + 0;
+ else
+ w->end = m->rindex + c->item_size;
+
+ w->array_size = array_size;
+ w->item_size = item_size;
+ w->offsets = offsets;
+ w->n_offsets = n_offsets;
+ w->offset_index = 0;
+
+ return 1;
+}
+
+_public_ int sd_bus_message_exit_container(sd_bus_message *m) {
+ struct bus_container *c;
+ unsigned saved;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->sealed, -EPERM);
+ assert_return(m->n_containers > 0, -ENXIO);
+
+ c = message_get_container(m);
+
+ if (c->enclosing != SD_BUS_TYPE_ARRAY) {
+ if (c->signature && c->signature[c->index] != 0)
+ return -EBUSY;
+ }
+
+ if (BUS_MESSAGE_IS_GVARIANT(m)) {
+ if (m->rindex < c->end)
+ return -EBUSY;
+
+ } else if (c->enclosing == SD_BUS_TYPE_ARRAY) {
+ uint32_t l;
+
+ l = BUS_MESSAGE_BSWAP32(m, *c->array_size);
+ if (c->begin + l != m->rindex)
+ return -EBUSY;
+ }
+
+ free(c->signature);
+ free(c->peeked_signature);
+ free(c->offsets);
+ m->n_containers--;
+
+ c = message_get_container(m);
+
+ saved = c->index;
+ c->index = c->saved_index;
+ r = container_next_item(m, c, &m->rindex);
+ c->index = saved;
+ if (r < 0)
+ return r;
+
+ return 1;
+}
+
+static void message_quit_container(sd_bus_message *m) {
+ struct bus_container *c;
+
+ assert(m);
+ assert(m->sealed);
+ assert(m->n_containers > 0);
+
+ c = message_get_container(m);
+
+ /* Undo seeks */
+ assert(m->rindex >= c->before);
+ m->rindex = c->before;
+
+ /* Free container */
+ free(c->signature);
+ free(c->offsets);
+ m->n_containers--;
+
+ /* Correct index of new top-level container */
+ c = message_get_container(m);
+ c->index = c->saved_index;
+}
+
+_public_ int sd_bus_message_peek_type(sd_bus_message *m, char *type, const char **contents) {
+ struct bus_container *c;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->sealed, -EPERM);
+
+ if (message_end_of_signature(m))
+ goto eof;
+
+ if (message_end_of_array(m, m->rindex))
+ goto eof;
+
+ c = message_get_container(m);
+
+ if (bus_type_is_basic(c->signature[c->index])) {
+ if (contents)
+ *contents = NULL;
+ if (type)
+ *type = c->signature[c->index];
+ return 1;
+ }
+
+ if (c->signature[c->index] == SD_BUS_TYPE_ARRAY) {
+
+ if (contents) {
+ size_t l;
+ char *sig;
+
+ r = signature_element_length(c->signature+c->index+1, &l);
+ if (r < 0)
+ return r;
+
+ assert(l >= 1);
+
+ sig = strndup(c->signature + c->index + 1, l);
+ if (!sig)
+ return -ENOMEM;
+
+ free(c->peeked_signature);
+ *contents = c->peeked_signature = sig;
+ }
+
+ if (type)
+ *type = SD_BUS_TYPE_ARRAY;
+
+ return 1;
+ }
+
+ if (c->signature[c->index] == SD_BUS_TYPE_STRUCT_BEGIN ||
+ c->signature[c->index] == SD_BUS_TYPE_DICT_ENTRY_BEGIN) {
+
+ if (contents) {
+ size_t l;
+ char *sig;
+
+ r = signature_element_length(c->signature+c->index, &l);
+ if (r < 0)
+ return r;
+
+ assert(l >= 2);
+ sig = strndup(c->signature + c->index + 1, l - 2);
+ if (!sig)
+ return -ENOMEM;
+
+ free(c->peeked_signature);
+ *contents = c->peeked_signature = sig;
+ }
+
+ if (type)
+ *type = c->signature[c->index] == SD_BUS_TYPE_STRUCT_BEGIN ? SD_BUS_TYPE_STRUCT : SD_BUS_TYPE_DICT_ENTRY;
+
+ return 1;
+ }
+
+ if (c->signature[c->index] == SD_BUS_TYPE_VARIANT) {
+ if (contents) {
+ void *q;
+
+ if (BUS_MESSAGE_IS_GVARIANT(m)) {
+ size_t k;
+
+ if (c->item_size < 2)
+ return -EBADMSG;
+
+ /* Look for the NUL delimiter that
+ separates the payload from the
+ signature. Since the body might be
+ in a different part that then the
+ signature we map byte by byte. */
+
+ for (k = 2; k <= c->item_size; k++) {
+ size_t where;
+
+ where = m->rindex + c->item_size - k;
+ r = message_peek_body(m, &where, 1, k, &q);
+ if (r < 0)
+ return r;
+
+ if (*(char*) q == 0)
+ break;
+ }
+
+ if (k > c->item_size)
+ return -EBADMSG;
+
+ free(c->peeked_signature);
+ c->peeked_signature = strndup((char*) q + 1, k - 1);
+ if (!c->peeked_signature)
+ return -ENOMEM;
+
+ if (!signature_is_valid(c->peeked_signature, true))
+ return -EBADMSG;
+
+ *contents = c->peeked_signature;
+ } else {
+ size_t rindex, l;
+
+ rindex = m->rindex;
+ r = message_peek_body(m, &rindex, 1, 1, &q);
+ if (r < 0)
+ return r;
+
+ l = *(uint8_t*) q;
+ r = message_peek_body(m, &rindex, 1, l+1, &q);
+ if (r < 0)
+ return r;
+
+ if (!validate_signature(q, l))
+ return -EBADMSG;
+
+ *contents = q;
+ }
+ }
+
+ if (type)
+ *type = SD_BUS_TYPE_VARIANT;
+
+ return 1;
+ }
+
+ return -EINVAL;
+
+eof:
+ if (type)
+ *type = 0;
+ if (contents)
+ *contents = NULL;
+ return 0;
+}
+
+_public_ int sd_bus_message_rewind(sd_bus_message *m, int complete) {
+ struct bus_container *c;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->sealed, -EPERM);
+
+ if (complete) {
+ message_reset_containers(m);
+ m->rindex = 0;
+
+ c = message_get_container(m);
+ } else {
+ c = message_get_container(m);
+
+ c->offset_index = 0;
+ c->index = 0;
+ m->rindex = c->begin;
+ }
+
+ c->offset_index = 0;
+ c->item_size = (c->n_offsets > 0 ? c->offsets[0] : c->end) - c->begin;
+
+ return !isempty(c->signature);
+}
+
+static int message_read_ap(
+ sd_bus_message *m,
+ const char *types,
+ va_list ap) {
+
+ unsigned n_array, n_struct;
+ TypeStack stack[BUS_CONTAINER_DEPTH];
+ unsigned stack_ptr = 0;
+ unsigned n_loop = 0;
+ int r;
+
+ assert(m);
+
+ if (isempty(types))
+ return 0;
+
+ /* Ideally, we'd just call ourselves recursively on every
+ * complex type. However, the state of a va_list that is
+ * passed to a function is undefined after that function
+ * returns. This means we need to docode the va_list linearly
+ * in a single stackframe. We hence implement our own
+ * home-grown stack in an array. */
+
+ n_array = (unsigned) -1; /* length of current array entries */
+ n_struct = strlen(types); /* length of current struct contents signature */
+
+ for (;;) {
+ const char *t;
+
+ n_loop++;
+
+ if (n_array == 0 || (n_array == (unsigned) -1 && n_struct == 0)) {
+ r = type_stack_pop(stack, ELEMENTSOF(stack), &stack_ptr, &types, &n_struct, &n_array);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ break;
+
+ r = sd_bus_message_exit_container(m);
+ if (r < 0)
+ return r;
+
+ continue;
+ }
+
+ t = types;
+ if (n_array != (unsigned) -1)
+ n_array--;
+ else {
+ types++;
+ n_struct--;
+ }
+
+ switch (*t) {
+
+ case SD_BUS_TYPE_BYTE:
+ case SD_BUS_TYPE_BOOLEAN:
+ case SD_BUS_TYPE_INT16:
+ case SD_BUS_TYPE_UINT16:
+ case SD_BUS_TYPE_INT32:
+ case SD_BUS_TYPE_UINT32:
+ case SD_BUS_TYPE_INT64:
+ case SD_BUS_TYPE_UINT64:
+ case SD_BUS_TYPE_DOUBLE:
+ case SD_BUS_TYPE_STRING:
+ case SD_BUS_TYPE_OBJECT_PATH:
+ case SD_BUS_TYPE_SIGNATURE:
+ case SD_BUS_TYPE_UNIX_FD: {
+ void *p;
+
+ p = va_arg(ap, void*);
+ r = sd_bus_message_read_basic(m, *t, p);
+ if (r < 0)
+ return r;
+ if (r == 0) {
+ if (n_loop <= 1)
+ return 0;
+
+ return -ENXIO;
+ }
+
+ break;
+ }
+
+ case SD_BUS_TYPE_ARRAY: {
+ size_t k;
+
+ r = signature_element_length(t + 1, &k);
+ if (r < 0)
+ return r;
+
+ {
+ char s[k + 1];
+ memcpy(s, t + 1, k);
+ s[k] = 0;
+
+ r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, s);
+ if (r < 0)
+ return r;
+ if (r == 0) {
+ if (n_loop <= 1)
+ return 0;
+
+ return -ENXIO;
+ }
+ }
+
+ if (n_array == (unsigned) -1) {
+ types += k;
+ n_struct -= k;
+ }
+
+ r = type_stack_push(stack, ELEMENTSOF(stack), &stack_ptr, types, n_struct, n_array);
+ if (r < 0)
+ return r;
+
+ types = t + 1;
+ n_struct = k;
+ n_array = va_arg(ap, unsigned);
+
+ break;
+ }
+
+ case SD_BUS_TYPE_VARIANT: {
+ const char *s;
+
+ s = va_arg(ap, const char *);
+ if (!s)
+ return -EINVAL;
+
+ r = sd_bus_message_enter_container(m, SD_BUS_TYPE_VARIANT, s);
+ if (r < 0)
+ return r;
+ if (r == 0) {
+ if (n_loop <= 1)
+ return 0;
+
+ return -ENXIO;
+ }
+
+ r = type_stack_push(stack, ELEMENTSOF(stack), &stack_ptr, types, n_struct, n_array);
+ if (r < 0)
+ return r;
+
+ types = s;
+ n_struct = strlen(s);
+ n_array = (unsigned) -1;
+
+ break;
+ }
+
+ case SD_BUS_TYPE_STRUCT_BEGIN:
+ case SD_BUS_TYPE_DICT_ENTRY_BEGIN: {
+ size_t k;
+
+ r = signature_element_length(t, &k);
+ if (r < 0)
+ return r;
+
+ {
+ char s[k - 1];
+ memcpy(s, t + 1, k - 2);
+ s[k - 2] = 0;
+
+ r = sd_bus_message_enter_container(m, *t == SD_BUS_TYPE_STRUCT_BEGIN ? SD_BUS_TYPE_STRUCT : SD_BUS_TYPE_DICT_ENTRY, s);
+ if (r < 0)
+ return r;
+ if (r == 0) {
+ if (n_loop <= 1)
+ return 0;
+ return -ENXIO;
+ }
+ }
+
+ if (n_array == (unsigned) -1) {
+ types += k - 1;
+ n_struct -= k - 1;
+ }
+
+ r = type_stack_push(stack, ELEMENTSOF(stack), &stack_ptr, types, n_struct, n_array);
+ if (r < 0)
+ return r;
+
+ types = t + 1;
+ n_struct = k - 2;
+ n_array = (unsigned) -1;
+
+ break;
+ }
+
+ default:
+ return -EINVAL;
+ }
+ }
+
+ return 1;
+}
+
+_public_ int sd_bus_message_read(sd_bus_message *m, const char *types, ...) {
+ va_list ap;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->sealed, -EPERM);
+ assert_return(types, -EINVAL);
+
+ va_start(ap, types);
+ r = message_read_ap(m, types, ap);
+ va_end(ap);
+
+ return r;
+}
+
+_public_ int sd_bus_message_skip(sd_bus_message *m, const char *types) {
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->sealed, -EPERM);
+
+ /* If types is NULL, read exactly one element */
+ if (!types) {
+ struct bus_container *c;
+ size_t l;
+
+ if (message_end_of_signature(m))
+ return -ENXIO;
+
+ if (message_end_of_array(m, m->rindex))
+ return 0;
+
+ c = message_get_container(m);
+
+ r = signature_element_length(c->signature + c->index, &l);
+ if (r < 0)
+ return r;
+
+ types = strndupa(c->signature + c->index, l);
+ }
+
+ switch (*types) {
+
+ case 0: /* Nothing to drop */
+ return 0;
+
+ case SD_BUS_TYPE_BYTE:
+ case SD_BUS_TYPE_BOOLEAN:
+ case SD_BUS_TYPE_INT16:
+ case SD_BUS_TYPE_UINT16:
+ case SD_BUS_TYPE_INT32:
+ case SD_BUS_TYPE_UINT32:
+ case SD_BUS_TYPE_INT64:
+ case SD_BUS_TYPE_UINT64:
+ case SD_BUS_TYPE_DOUBLE:
+ case SD_BUS_TYPE_STRING:
+ case SD_BUS_TYPE_OBJECT_PATH:
+ case SD_BUS_TYPE_SIGNATURE:
+ case SD_BUS_TYPE_UNIX_FD:
+
+ r = sd_bus_message_read_basic(m, *types, NULL);
+ if (r <= 0)
+ return r;
+
+ r = sd_bus_message_skip(m, types + 1);
+ if (r < 0)
+ return r;
+
+ return 1;
+
+ case SD_BUS_TYPE_ARRAY: {
+ size_t k;
+
+ r = signature_element_length(types + 1, &k);
+ if (r < 0)
+ return r;
+
+ {
+ char s[k+1];
+ memcpy(s, types+1, k);
+ s[k] = 0;
+
+ r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, s);
+ if (r <= 0)
+ return r;
+
+ for (;;) {
+ r = sd_bus_message_skip(m, s);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ break;
+ }
+
+ r = sd_bus_message_exit_container(m);
+ if (r < 0)
+ return r;
+ }
+
+ r = sd_bus_message_skip(m, types + 1 + k);
+ if (r < 0)
+ return r;
+
+ return 1;
+ }
+
+ case SD_BUS_TYPE_VARIANT: {
+ const char *contents;
+ char x;
+
+ r = sd_bus_message_peek_type(m, &x, &contents);
+ if (r <= 0)
+ return r;
+
+ if (x != SD_BUS_TYPE_VARIANT)
+ return -ENXIO;
+
+ r = sd_bus_message_enter_container(m, SD_BUS_TYPE_VARIANT, contents);
+ if (r <= 0)
+ return r;
+
+ r = sd_bus_message_skip(m, contents);
+ if (r < 0)
+ return r;
+ assert(r != 0);
+
+ r = sd_bus_message_exit_container(m);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_skip(m, types + 1);
+ if (r < 0)
+ return r;
+
+ return 1;
+ }
+
+ case SD_BUS_TYPE_STRUCT_BEGIN:
+ case SD_BUS_TYPE_DICT_ENTRY_BEGIN: {
+ size_t k;
+
+ r = signature_element_length(types, &k);
+ if (r < 0)
+ return r;
+
+ {
+ char s[k-1];
+ memcpy(s, types+1, k-2);
+ s[k-2] = 0;
+
+ r = sd_bus_message_enter_container(m, *types == SD_BUS_TYPE_STRUCT_BEGIN ? SD_BUS_TYPE_STRUCT : SD_BUS_TYPE_DICT_ENTRY, s);
+ if (r <= 0)
+ return r;
+
+ r = sd_bus_message_skip(m, s);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_exit_container(m);
+ if (r < 0)
+ return r;
+ }
+
+ r = sd_bus_message_skip(m, types + k);
+ if (r < 0)
+ return r;
+
+ return 1;
+ }
+
+ default:
+ return -EINVAL;
+ }
+}
+
+_public_ int sd_bus_message_read_array(
+ sd_bus_message *m,
+ char type,
+ const void **ptr,
+ size_t *size) {
+
+ struct bus_container *c;
+ void *p;
+ size_t sz;
+ ssize_t align;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->sealed, -EPERM);
+ assert_return(bus_type_is_trivial(type), -EINVAL);
+ assert_return(ptr, -EINVAL);
+ assert_return(size, -EINVAL);
+ assert_return(!BUS_MESSAGE_NEED_BSWAP(m), -EOPNOTSUPP);
+
+ r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, CHAR_TO_STR(type));
+ if (r <= 0)
+ return r;
+
+ c = message_get_container(m);
+
+ if (BUS_MESSAGE_IS_GVARIANT(m)) {
+ align = bus_gvariant_get_alignment(CHAR_TO_STR(type));
+ if (align < 0)
+ return align;
+
+ sz = c->end - c->begin;
+ } else {
+ align = bus_type_get_alignment(type);
+ if (align < 0)
+ return align;
+
+ sz = BUS_MESSAGE_BSWAP32(m, *c->array_size);
+ }
+
+ if (sz == 0)
+ /* Zero length array, let's return some aligned
+ * pointer that is not NULL */
+ p = (uint8_t*) NULL + align;
+ else {
+ r = message_peek_body(m, &m->rindex, align, sz, &p);
+ if (r < 0)
+ goto fail;
+ }
+
+ r = sd_bus_message_exit_container(m);
+ if (r < 0)
+ goto fail;
+
+ *ptr = (const void*) p;
+ *size = sz;
+
+ return 1;
+
+fail:
+ message_quit_container(m);
+ return r;
+}
+
+static int message_peek_fields(
+ sd_bus_message *m,
+ size_t *rindex,
+ size_t align,
+ size_t nbytes,
+ void **ret) {
+
+ assert(m);
+ assert(rindex);
+ assert(align > 0);
+
+ return buffer_peek(BUS_MESSAGE_FIELDS(m), m->fields_size, rindex, align, nbytes, ret);
+}
+
+static int message_peek_field_uint32(
+ sd_bus_message *m,
+ size_t *ri,
+ size_t item_size,
+ uint32_t *ret) {
+
+ int r;
+ void *q;
+
+ assert(m);
+ assert(ri);
+
+ if (BUS_MESSAGE_IS_GVARIANT(m) && item_size != 4)
+ return -EBADMSG;
+
+ /* identical for gvariant and dbus1 */
+
+ r = message_peek_fields(m, ri, 4, 4, &q);
+ if (r < 0)
+ return r;
+
+ if (ret)
+ *ret = BUS_MESSAGE_BSWAP32(m, *(uint32_t*) q);
+
+ return 0;
+}
+
+static int message_peek_field_uint64(
+ sd_bus_message *m,
+ size_t *ri,
+ size_t item_size,
+ uint64_t *ret) {
+
+ int r;
+ void *q;
+
+ assert(m);
+ assert(ri);
+
+ if (BUS_MESSAGE_IS_GVARIANT(m) && item_size != 8)
+ return -EBADMSG;
+
+ /* identical for gvariant and dbus1 */
+
+ r = message_peek_fields(m, ri, 8, 8, &q);
+ if (r < 0)
+ return r;
+
+ if (ret)
+ *ret = BUS_MESSAGE_BSWAP64(m, *(uint64_t*) q);
+
+ return 0;
+}
+
+static int message_peek_field_string(
+ sd_bus_message *m,
+ bool (*validate)(const char *p),
+ size_t *ri,
+ size_t item_size,
+ const char **ret) {
+
+ uint32_t l;
+ int r;
+ void *q;
+
+ assert(m);
+ assert(ri);
+
+ if (BUS_MESSAGE_IS_GVARIANT(m)) {
+
+ if (item_size <= 0)
+ return -EBADMSG;
+
+ r = message_peek_fields(m, ri, 1, item_size, &q);
+ if (r < 0)
+ return r;
+
+ l = item_size - 1;
+ } else {
+ r = message_peek_field_uint32(m, ri, 4, &l);
+ if (r < 0)
+ return r;
+
+ r = message_peek_fields(m, ri, 1, l+1, &q);
+ if (r < 0)
+ return r;
+ }
+
+ if (validate) {
+ if (!validate_nul(q, l))
+ return -EBADMSG;
+
+ if (!validate(q))
+ return -EBADMSG;
+ } else {
+ if (!validate_string(q, l))
+ return -EBADMSG;
+ }
+
+ if (ret)
+ *ret = q;
+
+ return 0;
+}
+
+static int message_peek_field_signature(
+ sd_bus_message *m,
+ size_t *ri,
+ size_t item_size,
+ const char **ret) {
+
+ size_t l;
+ int r;
+ void *q;
+
+ assert(m);
+ assert(ri);
+
+ if (BUS_MESSAGE_IS_GVARIANT(m)) {
+
+ if (item_size <= 0)
+ return -EBADMSG;
+
+ r = message_peek_fields(m, ri, 1, item_size, &q);
+ if (r < 0)
+ return r;
+
+ l = item_size - 1;
+ } else {
+ r = message_peek_fields(m, ri, 1, 1, &q);
+ if (r < 0)
+ return r;
+
+ l = *(uint8_t*) q;
+ r = message_peek_fields(m, ri, 1, l+1, &q);
+ if (r < 0)
+ return r;
+ }
+
+ if (!validate_signature(q, l))
+ return -EBADMSG;
+
+ if (ret)
+ *ret = q;
+
+ return 0;
+}
+
+static int message_skip_fields(
+ sd_bus_message *m,
+ size_t *ri,
+ uint32_t array_size,
+ const char **signature) {
+
+ size_t original_index;
+ int r;
+
+ assert(m);
+ assert(ri);
+ assert(signature);
+ assert(!BUS_MESSAGE_IS_GVARIANT(m));
+
+ original_index = *ri;
+
+ for (;;) {
+ char t;
+ size_t l;
+
+ if (array_size != (uint32_t) -1 &&
+ array_size <= *ri - original_index)
+ return 0;
+
+ t = **signature;
+ if (!t)
+ return 0;
+
+ if (t == SD_BUS_TYPE_STRING) {
+
+ r = message_peek_field_string(m, NULL, ri, 0, NULL);
+ if (r < 0)
+ return r;
+
+ (*signature)++;
+
+ } else if (t == SD_BUS_TYPE_OBJECT_PATH) {
+
+ r = message_peek_field_string(m, object_path_is_valid, ri, 0, NULL);
+ if (r < 0)
+ return r;
+
+ (*signature)++;
+
+ } else if (t == SD_BUS_TYPE_SIGNATURE) {
+
+ r = message_peek_field_signature(m, ri, 0, NULL);
+ if (r < 0)
+ return r;
+
+ (*signature)++;
+
+ } else if (bus_type_is_basic(t)) {
+ ssize_t align, k;
+
+ align = bus_type_get_alignment(t);
+ k = bus_type_get_size(t);
+ assert(align > 0 && k > 0);
+
+ r = message_peek_fields(m, ri, align, k, NULL);
+ if (r < 0)
+ return r;
+
+ (*signature)++;
+
+ } else if (t == SD_BUS_TYPE_ARRAY) {
+
+ r = signature_element_length(*signature+1, &l);
+ if (r < 0)
+ return r;
+
+ assert(l >= 1);
+ {
+ char sig[l-1], *s;
+ uint32_t nas;
+ int alignment;
+
+ strncpy(sig, *signature + 1, l-1);
+ s = sig;
+
+ alignment = bus_type_get_alignment(sig[0]);
+ if (alignment < 0)
+ return alignment;
+
+ r = message_peek_field_uint32(m, ri, 0, &nas);
+ if (r < 0)
+ return r;
+ if (nas > BUS_ARRAY_MAX_SIZE)
+ return -EBADMSG;
+
+ r = message_peek_fields(m, ri, alignment, 0, NULL);
+ if (r < 0)
+ return r;
+
+ r = message_skip_fields(m, ri, nas, (const char**) &s);
+ if (r < 0)
+ return r;
+ }
+
+ (*signature) += 1 + l;
+
+ } else if (t == SD_BUS_TYPE_VARIANT) {
+ const char *s;
+
+ r = message_peek_field_signature(m, ri, 0, &s);
+ if (r < 0)
+ return r;
+
+ r = message_skip_fields(m, ri, (uint32_t) -1, (const char**) &s);
+ if (r < 0)
+ return r;
+
+ (*signature)++;
+
+ } else if (t == SD_BUS_TYPE_STRUCT ||
+ t == SD_BUS_TYPE_DICT_ENTRY) {
+
+ r = signature_element_length(*signature, &l);
+ if (r < 0)
+ return r;
+
+ assert(l >= 2);
+ {
+ char sig[l-1], *s;
+ strncpy(sig, *signature + 1, l-1);
+ s = sig;
+
+ r = message_skip_fields(m, ri, (uint32_t) -1, (const char**) &s);
+ if (r < 0)
+ return r;
+ }
+
+ *signature += l;
+ } else
+ return -EINVAL;
+ }
+}
+
+int bus_message_parse_fields(sd_bus_message *m) {
+ size_t ri;
+ int r;
+ uint32_t unix_fds = 0;
+ bool unix_fds_set = false;
+ void *offsets = NULL;
+ unsigned n_offsets = 0;
+ size_t sz = 0;
+ unsigned i = 0;
+
+ assert(m);
+
+ if (BUS_MESSAGE_IS_GVARIANT(m)) {
+ char *p;
+
+ /* Read the signature from the end of the body variant first */
+ sz = bus_gvariant_determine_word_size(BUS_MESSAGE_SIZE(m), 0);
+ if (m->footer_accessible < 1 + sz)
+ return -EBADMSG;
+
+ p = (char*) m->footer + m->footer_accessible - (1 + sz);
+ for (;;) {
+ if (p < (char*) m->footer)
+ return -EBADMSG;
+
+ if (*p == 0) {
+ size_t l;
+ char *c;
+
+ /* We found the beginning of the signature
+ * string, yay! We require the body to be a
+ * structure, so verify it and then strip the
+ * opening/closing brackets. */
+
+ l = ((char*) m->footer + m->footer_accessible) - p - (1 + sz);
+ if (l < 2 ||
+ p[1] != SD_BUS_TYPE_STRUCT_BEGIN ||
+ p[1 + l - 1] != SD_BUS_TYPE_STRUCT_END)
+ return -EBADMSG;
+
+ c = strndup(p + 1 + 1, l - 2);
+ if (!c)
+ return -ENOMEM;
+
+ free(m->root_container.signature);
+ m->root_container.signature = c;
+ break;
+ }
+
+ p--;
+ }
+
+ /* Calculate the actual user body size, by removing
+ * the trailing variant signature and struct offset
+ * table */
+ m->user_body_size = m->body_size - ((char*) m->footer + m->footer_accessible - p);
+
+ /* Pull out the offset table for the fields array */
+ sz = bus_gvariant_determine_word_size(m->fields_size, 0);
+ if (sz > 0) {
+ size_t framing;
+ void *q;
+
+ ri = m->fields_size - sz;
+ r = message_peek_fields(m, &ri, 1, sz, &q);
+ if (r < 0)
+ return r;
+
+ framing = bus_gvariant_read_word_le(q, sz);
+ if (framing >= m->fields_size - sz)
+ return -EBADMSG;
+ if ((m->fields_size - framing) % sz != 0)
+ return -EBADMSG;
+
+ ri = framing;
+ r = message_peek_fields(m, &ri, 1, m->fields_size - framing, &offsets);
+ if (r < 0)
+ return r;
+
+ n_offsets = (m->fields_size - framing) / sz;
+ }
+ } else
+ m->user_body_size = m->body_size;
+
+ ri = 0;
+ while (ri < m->fields_size) {
+ _cleanup_free_ char *sig = NULL;
+ const char *signature;
+ uint64_t field_type;
+ size_t item_size = (size_t) -1;
+
+ if (BUS_MESSAGE_IS_GVARIANT(m)) {
+ uint64_t *u64;
+
+ if (i >= n_offsets)
+ break;
+
+ if (i == 0)
+ ri = 0;
+ else
+ ri = ALIGN_TO(bus_gvariant_read_word_le((uint8_t*) offsets + (i-1)*sz, sz), 8);
+
+ r = message_peek_fields(m, &ri, 8, 8, (void**) &u64);
+ if (r < 0)
+ return r;
+
+ field_type = BUS_MESSAGE_BSWAP64(m, *u64);
+ } else {
+ uint8_t *u8;
+
+ r = message_peek_fields(m, &ri, 8, 1, (void**) &u8);
+ if (r < 0)
+ return r;
+
+ field_type = *u8;
+ }
+
+ if (BUS_MESSAGE_IS_GVARIANT(m)) {
+ size_t where, end;
+ char *b;
+ void *q;
+
+ end = bus_gvariant_read_word_le((uint8_t*) offsets + i*sz, sz);
+
+ if (end < ri)
+ return -EBADMSG;
+
+ where = ri = ALIGN_TO(ri, 8);
+ item_size = end - ri;
+ r = message_peek_fields(m, &where, 1, item_size, &q);
+ if (r < 0)
+ return r;
+
+ b = memrchr(q, 0, item_size);
+ if (!b)
+ return -EBADMSG;
+
+ sig = strndup(b+1, item_size - (b+1-(char*) q));
+ if (!sig)
+ return -ENOMEM;
+
+ signature = sig;
+ item_size = b - (char*) q;
+ } else {
+ r = message_peek_field_signature(m, &ri, 0, &signature);
+ if (r < 0)
+ return r;
+ }
+
+ switch (field_type) {
+
+ case _BUS_MESSAGE_HEADER_INVALID:
+ return -EBADMSG;
+
+ case BUS_MESSAGE_HEADER_PATH:
+
+ if (m->path)
+ return -EBADMSG;
+
+ if (!streq(signature, "o"))
+ return -EBADMSG;
+
+ r = message_peek_field_string(m, object_path_is_valid, &ri, item_size, &m->path);
+ break;
+
+ case BUS_MESSAGE_HEADER_INTERFACE:
+
+ if (m->interface)
+ return -EBADMSG;
+
+ if (!streq(signature, "s"))
+ return -EBADMSG;
+
+ r = message_peek_field_string(m, interface_name_is_valid, &ri, item_size, &m->interface);
+ break;
+
+ case BUS_MESSAGE_HEADER_MEMBER:
+
+ if (m->member)
+ return -EBADMSG;
+
+ if (!streq(signature, "s"))
+ return -EBADMSG;
+
+ r = message_peek_field_string(m, member_name_is_valid, &ri, item_size, &m->member);
+ break;
+
+ case BUS_MESSAGE_HEADER_ERROR_NAME:
+
+ if (m->error.name)
+ return -EBADMSG;
+
+ if (!streq(signature, "s"))
+ return -EBADMSG;
+
+ r = message_peek_field_string(m, error_name_is_valid, &ri, item_size, &m->error.name);
+ if (r >= 0)
+ m->error._need_free = -1;
+
+ break;
+
+ case BUS_MESSAGE_HEADER_DESTINATION:
+
+ if (m->destination)
+ return -EBADMSG;
+
+ if (!streq(signature, "s"))
+ return -EBADMSG;
+
+ r = message_peek_field_string(m, service_name_is_valid, &ri, item_size, &m->destination);
+ break;
+
+ case BUS_MESSAGE_HEADER_SENDER:
+
+ if (m->sender)
+ return -EBADMSG;
+
+ if (!streq(signature, "s"))
+ return -EBADMSG;
+
+ r = message_peek_field_string(m, service_name_is_valid, &ri, item_size, &m->sender);
+
+ if (r >= 0 && m->sender[0] == ':' && m->bus->bus_client && !m->bus->is_kernel) {
+ m->creds.unique_name = (char*) m->sender;
+ m->creds.mask |= SD_BUS_CREDS_UNIQUE_NAME & m->bus->creds_mask;
+ }
+
+ break;
+
+
+ case BUS_MESSAGE_HEADER_SIGNATURE: {
+ const char *s;
+ char *c;
+
+ if (BUS_MESSAGE_IS_GVARIANT(m)) /* only applies to dbus1 */
+ return -EBADMSG;
+
+ if (m->root_container.signature)
+ return -EBADMSG;
+
+ if (!streq(signature, "g"))
+ return -EBADMSG;
+
+ r = message_peek_field_signature(m, &ri, item_size, &s);
+ if (r < 0)
+ return r;
+
+ c = strdup(s);
+ if (!c)
+ return -ENOMEM;
+
+ free(m->root_container.signature);
+ m->root_container.signature = c;
+ break;
+ }
+
+ case BUS_MESSAGE_HEADER_REPLY_SERIAL:
+
+ if (m->reply_cookie != 0)
+ return -EBADMSG;
+
+ if (BUS_MESSAGE_IS_GVARIANT(m)) {
+ /* 64bit on dbus2 */
+
+ if (!streq(signature, "t"))
+ return -EBADMSG;
+
+ r = message_peek_field_uint64(m, &ri, item_size, &m->reply_cookie);
+ if (r < 0)
+ return r;
+ } else {
+ /* 32bit on dbus1 */
+ uint32_t serial;
+
+ if (!streq(signature, "u"))
+ return -EBADMSG;
+
+ r = message_peek_field_uint32(m, &ri, item_size, &serial);
+ if (r < 0)
+ return r;
+
+ m->reply_cookie = serial;
+ }
+
+ if (m->reply_cookie == 0)
+ return -EBADMSG;
+
+ break;
+
+ case BUS_MESSAGE_HEADER_UNIX_FDS:
+ if (unix_fds_set)
+ return -EBADMSG;
+
+ if (!streq(signature, "u"))
+ return -EBADMSG;
+
+ r = message_peek_field_uint32(m, &ri, item_size, &unix_fds);
+ if (r < 0)
+ return -EBADMSG;
+
+ unix_fds_set = true;
+ break;
+
+ default:
+ if (!BUS_MESSAGE_IS_GVARIANT(m))
+ r = message_skip_fields(m, &ri, (uint32_t) -1, (const char **) &signature);
+ }
+
+ if (r < 0)
+ return r;
+
+ i++;
+ }
+
+ if (m->n_fds != unix_fds)
+ return -EBADMSG;
+
+ switch (m->header->type) {
+
+ case SD_BUS_MESSAGE_SIGNAL:
+ if (!m->path || !m->interface || !m->member)
+ return -EBADMSG;
+
+ if (m->reply_cookie != 0)
+ return -EBADMSG;
+
+ break;
+
+ case SD_BUS_MESSAGE_METHOD_CALL:
+
+ if (!m->path || !m->member)
+ return -EBADMSG;
+
+ if (m->reply_cookie != 0)
+ return -EBADMSG;
+
+ break;
+
+ case SD_BUS_MESSAGE_METHOD_RETURN:
+
+ if (m->reply_cookie == 0)
+ return -EBADMSG;
+ break;
+
+ case SD_BUS_MESSAGE_METHOD_ERROR:
+
+ if (m->reply_cookie == 0 || !m->error.name)
+ return -EBADMSG;
+ break;
+ }
+
+ /* Refuse non-local messages that claim they are local */
+ if (streq_ptr(m->path, "/org/freedesktop/DBus/Local"))
+ return -EBADMSG;
+ if (streq_ptr(m->interface, "org.freedesktop.DBus.Local"))
+ return -EBADMSG;
+ if (streq_ptr(m->sender, "org.freedesktop.DBus.Local"))
+ return -EBADMSG;
+
+ m->root_container.end = m->user_body_size;
+
+ if (BUS_MESSAGE_IS_GVARIANT(m)) {
+ r = build_struct_offsets(
+ m,
+ m->root_container.signature,
+ m->user_body_size,
+ &m->root_container.item_size,
+ &m->root_container.offsets,
+ &m->root_container.n_offsets);
+ if (r < 0)
+ return r;
+ }
+
+ /* Try to read the error message, but if we can't it's a non-issue */
+ if (m->header->type == SD_BUS_MESSAGE_METHOD_ERROR)
+ (void) sd_bus_message_read(m, "s", &m->error.message);
+
+ return 0;
+}
+
+_public_ int sd_bus_message_set_destination(sd_bus_message *m, const char *destination) {
+ assert_return(m, -EINVAL);
+ assert_return(destination, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(!m->destination, -EEXIST);
+
+ return message_append_field_string(m, BUS_MESSAGE_HEADER_DESTINATION, SD_BUS_TYPE_STRING, destination, &m->destination);
+}
+
+int bus_message_get_blob(sd_bus_message *m, void **buffer, size_t *sz) {
+ size_t total;
+ void *p, *e;
+ unsigned i;
+ struct bus_body_part *part;
+
+ assert(m);
+ assert(buffer);
+ assert(sz);
+
+ total = BUS_MESSAGE_SIZE(m);
+
+ p = malloc(total);
+ if (!p)
+ return -ENOMEM;
+
+ e = mempcpy(p, m->header, BUS_MESSAGE_BODY_BEGIN(m));
+ MESSAGE_FOREACH_PART(part, i, m)
+ e = mempcpy(e, part->data, part->size);
+
+ assert(total == (size_t) ((uint8_t*) e - (uint8_t*) p));
+
+ *buffer = p;
+ *sz = total;
+
+ return 0;
+}
+
+int bus_message_read_strv_extend(sd_bus_message *m, char ***l) {
+ const char *s;
+ int r;
+
+ assert(m);
+ assert(l);
+
+ r = sd_bus_message_enter_container(m, 'a', "s");
+ if (r <= 0)
+ return r;
+
+ while ((r = sd_bus_message_read_basic(m, 's', &s)) > 0) {
+ r = strv_extend(l, s);
+ if (r < 0)
+ return r;
+ }
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_exit_container(m);
+ if (r < 0)
+ return r;
+
+ return 1;
+}
+
+_public_ int sd_bus_message_read_strv(sd_bus_message *m, char ***l) {
+ char **strv = NULL;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->sealed, -EPERM);
+ assert_return(l, -EINVAL);
+
+ r = bus_message_read_strv_extend(m, &strv);
+ if (r <= 0) {
+ strv_free(strv);
+ return r;
+ }
+
+ *l = strv;
+ return 1;
+}
+
+static int bus_message_get_arg_skip(
+ sd_bus_message *m,
+ unsigned i,
+ char *_type,
+ const char **_contents) {
+
+ unsigned j;
+ int r;
+
+ r = sd_bus_message_rewind(m, true);
+ if (r < 0)
+ return r;
+
+ for (j = 0;; j++) {
+ const char *contents;
+ char type;
+
+ r = sd_bus_message_peek_type(m, &type, &contents);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return -ENXIO;
+
+ /* Don't match against arguments after the first one we don't understand */
+ if (!IN_SET(type, SD_BUS_TYPE_STRING, SD_BUS_TYPE_OBJECT_PATH, SD_BUS_TYPE_SIGNATURE) &&
+ !(type == SD_BUS_TYPE_ARRAY && STR_IN_SET(contents, "s", "o", "g")))
+ return -ENXIO;
+
+ if (j >= i) {
+ if (_contents)
+ *_contents = contents;
+ if (_type)
+ *_type = type;
+ return 0;
+ }
+
+ r = sd_bus_message_skip(m, NULL);
+ if (r < 0)
+ return r;
+ }
+
+}
+
+int bus_message_get_arg(sd_bus_message *m, unsigned i, const char **str) {
+ char type;
+ int r;
+
+ assert(m);
+ assert(str);
+
+ r = bus_message_get_arg_skip(m, i, &type, NULL);
+ if (r < 0)
+ return r;
+
+ if (!IN_SET(type, SD_BUS_TYPE_STRING, SD_BUS_TYPE_OBJECT_PATH, SD_BUS_TYPE_SIGNATURE))
+ return -ENXIO;
+
+ return sd_bus_message_read_basic(m, type, str);
+}
+
+int bus_message_get_arg_strv(sd_bus_message *m, unsigned i, char ***strv) {
+ const char *contents;
+ char type;
+ int r;
+
+ assert(m);
+ assert(strv);
+
+ r = bus_message_get_arg_skip(m, i, &type, &contents);
+ if (r < 0)
+ return r;
+
+ if (type != SD_BUS_TYPE_ARRAY)
+ return -ENXIO;
+ if (!STR_IN_SET(contents, "s", "o", "g"))
+ return -ENXIO;
+
+ return sd_bus_message_read_strv(m, strv);
+}
+
+_public_ int sd_bus_message_get_errno(sd_bus_message *m) {
+ assert_return(m, EINVAL);
+
+ if (m->header->type != SD_BUS_MESSAGE_METHOD_ERROR)
+ return 0;
+
+ return sd_bus_error_get_errno(&m->error);
+}
+
+_public_ const char* sd_bus_message_get_signature(sd_bus_message *m, int complete) {
+ struct bus_container *c;
+
+ assert_return(m, NULL);
+
+ c = complete ? &m->root_container : message_get_container(m);
+ return strempty(c->signature);
+}
+
+_public_ int sd_bus_message_is_empty(sd_bus_message *m) {
+ assert_return(m, -EINVAL);
+
+ return isempty(m->root_container.signature);
+}
+
+_public_ int sd_bus_message_has_signature(sd_bus_message *m, const char *signature) {
+ assert_return(m, -EINVAL);
+
+ return streq(strempty(m->root_container.signature), strempty(signature));
+}
+
+_public_ int sd_bus_message_copy(sd_bus_message *m, sd_bus_message *source, int all) {
+ bool done_something = false;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(source, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(source->sealed, -EPERM);
+
+ do {
+ const char *contents;
+ char type;
+ union {
+ uint8_t u8;
+ uint16_t u16;
+ int16_t s16;
+ uint32_t u32;
+ int32_t s32;
+ uint64_t u64;
+ int64_t s64;
+ double d64;
+ const char *string;
+ int i;
+ } basic;
+
+ r = sd_bus_message_peek_type(source, &type, &contents);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ break;
+
+ done_something = true;
+
+ if (bus_type_is_container(type) > 0) {
+
+ r = sd_bus_message_enter_container(source, type, contents);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_open_container(m, type, contents);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_copy(m, source, true);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_close_container(m);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_exit_container(source);
+ if (r < 0)
+ return r;
+
+ continue;
+ }
+
+ r = sd_bus_message_read_basic(source, type, &basic);
+ if (r < 0)
+ return r;
+
+ assert(r > 0);
+
+ if (type == SD_BUS_TYPE_OBJECT_PATH ||
+ type == SD_BUS_TYPE_SIGNATURE ||
+ type == SD_BUS_TYPE_STRING)
+ r = sd_bus_message_append_basic(m, type, basic.string);
+ else
+ r = sd_bus_message_append_basic(m, type, &basic);
+
+ if (r < 0)
+ return r;
+
+ } while (all);
+
+ return done_something;
+}
+
+_public_ int sd_bus_message_verify_type(sd_bus_message *m, char type, const char *contents) {
+ const char *c;
+ char t;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->sealed, -EPERM);
+ assert_return(!type || bus_type_is_valid(type), -EINVAL);
+ assert_return(!contents || signature_is_valid(contents, true), -EINVAL);
+ assert_return(type || contents, -EINVAL);
+ assert_return(!contents || !type || bus_type_is_container(type), -EINVAL);
+
+ r = sd_bus_message_peek_type(m, &t, &c);
+ if (r <= 0)
+ return r;
+
+ if (type != 0 && type != t)
+ return 0;
+
+ if (contents && !streq_ptr(contents, c))
+ return 0;
+
+ return 1;
+}
+
+_public_ sd_bus *sd_bus_message_get_bus(sd_bus_message *m) {
+ assert_return(m, NULL);
+
+ return m->bus;
+}
+
+int bus_message_remarshal(sd_bus *bus, sd_bus_message **m) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *n = NULL;
+ usec_t timeout;
+ int r;
+
+ assert(bus);
+ assert(m);
+ assert(*m);
+
+ switch ((*m)->header->type) {
+
+ case SD_BUS_MESSAGE_SIGNAL:
+ r = sd_bus_message_new_signal(bus, &n, (*m)->path, (*m)->interface, (*m)->member);
+ if (r < 0)
+ return r;
+
+ break;
+
+ case SD_BUS_MESSAGE_METHOD_CALL:
+ r = sd_bus_message_new_method_call(bus, &n, (*m)->destination, (*m)->path, (*m)->interface, (*m)->member);
+ if (r < 0)
+ return r;
+
+ break;
+
+ case SD_BUS_MESSAGE_METHOD_RETURN:
+ case SD_BUS_MESSAGE_METHOD_ERROR:
+
+ n = message_new(bus, (*m)->header->type);
+ if (!n)
+ return -ENOMEM;
+
+ n->reply_cookie = (*m)->reply_cookie;
+
+ r = message_append_reply_cookie(n, n->reply_cookie);
+ if (r < 0)
+ return r;
+
+ if ((*m)->header->type == SD_BUS_MESSAGE_METHOD_ERROR && (*m)->error.name) {
+ r = message_append_field_string(n, BUS_MESSAGE_HEADER_ERROR_NAME, SD_BUS_TYPE_STRING, (*m)->error.name, &n->error.message);
+ if (r < 0)
+ return r;
+
+ n->error._need_free = -1;
+ }
+
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ if ((*m)->destination && !n->destination) {
+ r = message_append_field_string(n, BUS_MESSAGE_HEADER_DESTINATION, SD_BUS_TYPE_STRING, (*m)->destination, &n->destination);
+ if (r < 0)
+ return r;
+ }
+
+ if ((*m)->sender && !n->sender) {
+ r = message_append_field_string(n, BUS_MESSAGE_HEADER_SENDER, SD_BUS_TYPE_STRING, (*m)->sender, &n->sender);
+ if (r < 0)
+ return r;
+ }
+
+ n->header->flags |= (*m)->header->flags & (BUS_MESSAGE_NO_REPLY_EXPECTED|BUS_MESSAGE_NO_AUTO_START);
+
+ r = sd_bus_message_copy(n, *m, true);
+ if (r < 0)
+ return r;
+
+ timeout = (*m)->timeout;
+ if (timeout == 0 && !((*m)->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED))
+ timeout = BUS_DEFAULT_TIMEOUT;
+
+ r = bus_message_seal(n, BUS_MESSAGE_COOKIE(*m), timeout);
+ if (r < 0)
+ return r;
+
+ sd_bus_message_unref(*m);
+ *m = n;
+ n = NULL;
+
+ return 0;
+}
+
+int bus_message_append_sender(sd_bus_message *m, const char *sender) {
+ assert(m);
+ assert(sender);
+
+ assert_return(!m->sealed, -EPERM);
+ assert_return(!m->sender, -EPERM);
+
+ return message_append_field_string(m, BUS_MESSAGE_HEADER_SENDER, SD_BUS_TYPE_STRING, sender, &m->sender);
+}
+
+_public_ int sd_bus_message_get_priority(sd_bus_message *m, int64_t *priority) {
+ assert_return(m, -EINVAL);
+ assert_return(priority, -EINVAL);
+
+ *priority = m->priority;
+ return 0;
+}
+
+_public_ int sd_bus_message_set_priority(sd_bus_message *m, int64_t priority) {
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+
+ m->priority = priority;
+ return 0;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-message.h b/src/libsystemd/libsystemd-internal/sd-bus/bus-message.h
new file mode 100644
index 0000000000..6a2c2d533c
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-message.h
@@ -0,0 +1,244 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <byteswap.h>
+#include <stdbool.h>
+#include <sys/socket.h>
+
+#include <systemd/sd-bus.h>
+
+#include "bus-creds.h"
+#include "bus-protocol.h"
+#include "macro.h"
+#include "time-util.h"
+
+struct bus_container {
+ char enclosing;
+ bool need_offsets:1;
+
+ /* Indexes into the signature string */
+ unsigned index, saved_index;
+ char *signature;
+
+ size_t before, begin, end;
+
+ /* dbus1: pointer to the array size value, if this is a value */
+ uint32_t *array_size;
+
+ /* gvariant: list of offsets to end of children if this is struct/dict entry/array */
+ size_t *offsets, n_offsets, offsets_allocated, offset_index;
+ size_t item_size;
+
+ char *peeked_signature;
+};
+
+struct bus_body_part {
+ struct bus_body_part *next;
+ void *data;
+ void *mmap_begin;
+ size_t size;
+ size_t mapped;
+ size_t allocated;
+ uint64_t memfd_offset;
+ int memfd;
+ bool free_this:1;
+ bool munmap_this:1;
+ bool sealed:1;
+ bool is_zero:1;
+};
+
+struct sd_bus_message {
+ unsigned n_ref;
+
+ sd_bus *bus;
+
+ uint64_t reply_cookie;
+
+ const char *path;
+ const char *interface;
+ const char *member;
+ const char *destination;
+ const char *sender;
+
+ sd_bus_error error;
+
+ sd_bus_creds creds;
+
+ usec_t monotonic;
+ usec_t realtime;
+ uint64_t seqnum;
+ int64_t priority;
+ uint64_t verify_destination_id;
+
+ bool sealed:1;
+ bool dont_send:1;
+ bool allow_fds:1;
+ bool free_header:1;
+ bool free_kdbus:1;
+ bool free_fds:1;
+ bool release_kdbus:1;
+ bool poisoned:1;
+
+ /* The first and last bytes of the message */
+ struct bus_header *header;
+ void *footer;
+
+ /* How many bytes are accessible in the above pointers */
+ size_t header_accessible;
+ size_t footer_accessible;
+
+ size_t fields_size;
+ size_t body_size;
+ size_t user_body_size;
+
+ struct bus_body_part body;
+ struct bus_body_part *body_end;
+ unsigned n_body_parts;
+
+ size_t rindex;
+ struct bus_body_part *cached_rindex_part;
+ size_t cached_rindex_part_begin;
+
+ uint32_t n_fds;
+ int *fds;
+
+ struct bus_container root_container, *containers;
+ size_t n_containers;
+ size_t containers_allocated;
+
+ struct iovec *iovec;
+ struct iovec iovec_fixed[2];
+ unsigned n_iovec;
+
+ struct kdbus_msg *kdbus;
+
+ char *peeked_signature;
+
+ /* If set replies to this message must carry the signature
+ * specified here to successfully seal. This is initialized
+ * from the vtable data */
+ const char *enforced_reply_signature;
+
+ usec_t timeout;
+
+ char sender_buffer[3 + DECIMAL_STR_MAX(uint64_t) + 1];
+ char destination_buffer[3 + DECIMAL_STR_MAX(uint64_t) + 1];
+ char *destination_ptr;
+
+ size_t header_offsets[_BUS_MESSAGE_HEADER_MAX];
+ unsigned n_header_offsets;
+};
+
+static inline bool BUS_MESSAGE_NEED_BSWAP(sd_bus_message *m) {
+ return m->header->endian != BUS_NATIVE_ENDIAN;
+}
+
+static inline uint16_t BUS_MESSAGE_BSWAP16(sd_bus_message *m, uint16_t u) {
+ return BUS_MESSAGE_NEED_BSWAP(m) ? bswap_16(u) : u;
+}
+
+static inline uint32_t BUS_MESSAGE_BSWAP32(sd_bus_message *m, uint32_t u) {
+ return BUS_MESSAGE_NEED_BSWAP(m) ? bswap_32(u) : u;
+}
+
+static inline uint64_t BUS_MESSAGE_BSWAP64(sd_bus_message *m, uint64_t u) {
+ return BUS_MESSAGE_NEED_BSWAP(m) ? bswap_64(u) : u;
+}
+
+static inline uint64_t BUS_MESSAGE_COOKIE(sd_bus_message *m) {
+ if (m->header->version == 2)
+ return BUS_MESSAGE_BSWAP64(m, m->header->dbus2.cookie);
+
+ return BUS_MESSAGE_BSWAP32(m, m->header->dbus1.serial);
+}
+
+static inline size_t BUS_MESSAGE_SIZE(sd_bus_message *m) {
+ return
+ sizeof(struct bus_header) +
+ ALIGN8(m->fields_size) +
+ m->body_size;
+}
+
+static inline size_t BUS_MESSAGE_BODY_BEGIN(sd_bus_message *m) {
+ return
+ sizeof(struct bus_header) +
+ ALIGN8(m->fields_size);
+}
+
+static inline void* BUS_MESSAGE_FIELDS(sd_bus_message *m) {
+ return (uint8_t*) m->header + sizeof(struct bus_header);
+}
+
+static inline bool BUS_MESSAGE_IS_GVARIANT(sd_bus_message *m) {
+ return m->header->version == 2;
+}
+
+int bus_message_seal(sd_bus_message *m, uint64_t serial, usec_t timeout);
+int bus_message_get_blob(sd_bus_message *m, void **buffer, size_t *sz);
+int bus_message_read_strv_extend(sd_bus_message *m, char ***l);
+
+int bus_message_from_header(
+ sd_bus *bus,
+ void *header,
+ size_t header_accessible,
+ void *footer,
+ size_t footer_accessible,
+ size_t message_size,
+ int *fds,
+ unsigned n_fds,
+ const char *label,
+ size_t extra,
+ sd_bus_message **ret);
+
+int bus_message_from_malloc(
+ sd_bus *bus,
+ void *buffer,
+ size_t length,
+ int *fds,
+ unsigned n_fds,
+ const char *label,
+ sd_bus_message **ret);
+
+int bus_message_get_arg(sd_bus_message *m, unsigned i, const char **str);
+int bus_message_get_arg_strv(sd_bus_message *m, unsigned i, char ***strv);
+
+int bus_message_append_ap(sd_bus_message *m, const char *types, va_list ap);
+
+int bus_message_parse_fields(sd_bus_message *m);
+
+struct bus_body_part *message_append_part(sd_bus_message *m);
+
+#define MESSAGE_FOREACH_PART(part, i, m) \
+ for ((i) = 0, (part) = &(m)->body; (i) < (m)->n_body_parts; (i)++, (part) = (part)->next)
+
+int bus_body_part_map(struct bus_body_part *part);
+void bus_body_part_unmap(struct bus_body_part *part);
+
+int bus_message_to_errno(sd_bus_message *m);
+
+int bus_message_new_synthetic_error(sd_bus *bus, uint64_t serial, const sd_bus_error *e, sd_bus_message **m);
+
+int bus_message_remarshal(sd_bus *bus, sd_bus_message **m);
+
+int bus_message_append_sender(sd_bus_message *m, const char *sender);
+
+void bus_message_set_sender_driver(sd_bus *bus, sd_bus_message *m);
+void bus_message_set_sender_local(sd_bus *bus, sd_bus_message *m);
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-objects.c b/src/libsystemd/libsystemd-internal/sd-bus/bus-objects.c
new file mode 100644
index 0000000000..9bd07ffcab
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-objects.c
@@ -0,0 +1,2806 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "alloc-util.h"
+#include "bus-internal.h"
+#include "bus-introspect.h"
+#include "bus-message.h"
+#include "bus-objects.h"
+#include "bus-signature.h"
+#include "bus-slot.h"
+#include "bus-type.h"
+#include "bus-util.h"
+#include "set.h"
+#include "string-util.h"
+#include "strv.h"
+
+static int node_vtable_get_userdata(
+ sd_bus *bus,
+ const char *path,
+ struct node_vtable *c,
+ void **userdata,
+ sd_bus_error *error) {
+
+ sd_bus_slot *s;
+ void *u;
+ int r;
+
+ assert(bus);
+ assert(path);
+ assert(c);
+
+ s = container_of(c, sd_bus_slot, node_vtable);
+ u = s->userdata;
+ if (c->find) {
+ bus->current_slot = sd_bus_slot_ref(s);
+ bus->current_userdata = u;
+ r = c->find(bus, path, c->interface, u, &u, error);
+ bus->current_userdata = NULL;
+ bus->current_slot = sd_bus_slot_unref(s);
+
+ if (r < 0)
+ return r;
+ if (sd_bus_error_is_set(error))
+ return -sd_bus_error_get_errno(error);
+ if (r == 0)
+ return r;
+ }
+
+ if (userdata)
+ *userdata = u;
+
+ return 1;
+}
+
+static void *vtable_method_convert_userdata(const sd_bus_vtable *p, void *u) {
+ assert(p);
+
+ return (uint8_t*) u + p->x.method.offset;
+}
+
+static void *vtable_property_convert_userdata(const sd_bus_vtable *p, void *u) {
+ assert(p);
+
+ return (uint8_t*) u + p->x.property.offset;
+}
+
+static int vtable_property_get_userdata(
+ sd_bus *bus,
+ const char *path,
+ struct vtable_member *p,
+ void **userdata,
+ sd_bus_error *error) {
+
+ void *u;
+ int r;
+
+ assert(bus);
+ assert(path);
+ assert(p);
+ assert(userdata);
+
+ r = node_vtable_get_userdata(bus, path, p->parent, &u, error);
+ if (r <= 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+
+ *userdata = vtable_property_convert_userdata(p->vtable, u);
+ return 1;
+}
+
+static int add_enumerated_to_set(
+ sd_bus *bus,
+ const char *prefix,
+ struct node_enumerator *first,
+ Set *s,
+ sd_bus_error *error) {
+
+ struct node_enumerator *c;
+ int r;
+
+ assert(bus);
+ assert(prefix);
+ assert(s);
+
+ LIST_FOREACH(enumerators, c, first) {
+ char **children = NULL, **k;
+ sd_bus_slot *slot;
+
+ if (bus->nodes_modified)
+ return 0;
+
+ slot = container_of(c, sd_bus_slot, node_enumerator);
+
+ bus->current_slot = sd_bus_slot_ref(slot);
+ bus->current_userdata = slot->userdata;
+ r = c->callback(bus, prefix, slot->userdata, &children, error);
+ bus->current_userdata = NULL;
+ bus->current_slot = sd_bus_slot_unref(slot);
+
+ if (r < 0)
+ return r;
+ if (sd_bus_error_is_set(error))
+ return -sd_bus_error_get_errno(error);
+
+ STRV_FOREACH(k, children) {
+ if (r < 0) {
+ free(*k);
+ continue;
+ }
+
+ if (!object_path_is_valid(*k)) {
+ free(*k);
+ r = -EINVAL;
+ continue;
+ }
+
+ if (!object_path_startswith(*k, prefix)) {
+ free(*k);
+ continue;
+ }
+
+ r = set_consume(s, *k);
+ if (r == -EEXIST)
+ r = 0;
+ }
+
+ free(children);
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
+enum {
+ /* if set, add_subtree() works recursively */
+ CHILDREN_RECURSIVE = (1U << 1),
+ /* if set, add_subtree() scans object-manager hierarchies recursively */
+ CHILDREN_SUBHIERARCHIES = (1U << 0),
+};
+
+static int add_subtree_to_set(
+ sd_bus *bus,
+ const char *prefix,
+ struct node *n,
+ unsigned int flags,
+ Set *s,
+ sd_bus_error *error) {
+
+ struct node *i;
+ int r;
+
+ assert(bus);
+ assert(prefix);
+ assert(n);
+ assert(s);
+
+ r = add_enumerated_to_set(bus, prefix, n->enumerators, s, error);
+ if (r < 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+
+ LIST_FOREACH(siblings, i, n->child) {
+ char *t;
+
+ if (!object_path_startswith(i->path, prefix))
+ continue;
+
+ t = strdup(i->path);
+ if (!t)
+ return -ENOMEM;
+
+ r = set_consume(s, t);
+ if (r < 0 && r != -EEXIST)
+ return r;
+
+ if ((flags & CHILDREN_RECURSIVE) &&
+ ((flags & CHILDREN_SUBHIERARCHIES) || !i->object_managers)) {
+ r = add_subtree_to_set(bus, prefix, i, flags, s, error);
+ if (r < 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+ }
+ }
+
+ return 0;
+}
+
+static int get_child_nodes(
+ sd_bus *bus,
+ const char *prefix,
+ struct node *n,
+ unsigned int flags,
+ Set **_s,
+ sd_bus_error *error) {
+
+ Set *s = NULL;
+ int r;
+
+ assert(bus);
+ assert(prefix);
+ assert(n);
+ assert(_s);
+
+ s = set_new(&string_hash_ops);
+ if (!s)
+ return -ENOMEM;
+
+ r = add_subtree_to_set(bus, prefix, n, flags, s, error);
+ if (r < 0) {
+ set_free_free(s);
+ return r;
+ }
+
+ *_s = s;
+ return 0;
+}
+
+static int node_callbacks_run(
+ sd_bus *bus,
+ sd_bus_message *m,
+ struct node_callback *first,
+ bool require_fallback,
+ bool *found_object) {
+
+ struct node_callback *c;
+ int r;
+
+ assert(bus);
+ assert(m);
+ assert(found_object);
+
+ LIST_FOREACH(callbacks, c, first) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error_buffer = SD_BUS_ERROR_NULL;
+ sd_bus_slot *slot;
+
+ if (bus->nodes_modified)
+ return 0;
+
+ if (require_fallback && !c->is_fallback)
+ continue;
+
+ *found_object = true;
+
+ if (c->last_iteration == bus->iteration_counter)
+ continue;
+
+ c->last_iteration = bus->iteration_counter;
+
+ r = sd_bus_message_rewind(m, true);
+ if (r < 0)
+ return r;
+
+ slot = container_of(c, sd_bus_slot, node_callback);
+
+ bus->current_slot = sd_bus_slot_ref(slot);
+ bus->current_handler = c->callback;
+ bus->current_userdata = slot->userdata;
+ r = c->callback(m, slot->userdata, &error_buffer);
+ bus->current_userdata = NULL;
+ bus->current_handler = NULL;
+ bus->current_slot = sd_bus_slot_unref(slot);
+
+ r = bus_maybe_reply_error(m, r, &error_buffer);
+ if (r != 0)
+ return r;
+ }
+
+ return 0;
+}
+
+#define CAPABILITY_SHIFT(x) (((x) >> __builtin_ctzll(_SD_BUS_VTABLE_CAPABILITY_MASK)) & 0xFFFF)
+
+static int check_access(sd_bus *bus, sd_bus_message *m, struct vtable_member *c, sd_bus_error *error) {
+ uint64_t cap;
+ int r;
+
+ assert(bus);
+ assert(m);
+ assert(c);
+
+ /* If the entire bus is trusted let's grant access */
+ if (bus->trusted)
+ return 0;
+
+ /* If the member is marked UNPRIVILEGED let's grant access */
+ if (c->vtable->flags & SD_BUS_VTABLE_UNPRIVILEGED)
+ return 0;
+
+ /* Check have the caller has the requested capability
+ * set. Note that the flags value contains the capability
+ * number plus one, which we need to subtract here. We do this
+ * so that we have 0 as special value for "default
+ * capability". */
+ cap = CAPABILITY_SHIFT(c->vtable->flags);
+ if (cap == 0)
+ cap = CAPABILITY_SHIFT(c->parent->vtable[0].flags);
+ if (cap == 0)
+ cap = CAP_SYS_ADMIN;
+ else
+ cap--;
+
+ r = sd_bus_query_sender_privilege(m, cap);
+ if (r < 0)
+ return r;
+ if (r > 0)
+ return 0;
+
+ return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Access to %s.%s() not permitted.", c->interface, c->member);
+}
+
+static int method_callbacks_run(
+ sd_bus *bus,
+ sd_bus_message *m,
+ struct vtable_member *c,
+ bool require_fallback,
+ bool *found_object) {
+
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ const char *signature;
+ void *u;
+ int r;
+
+ assert(bus);
+ assert(m);
+ assert(c);
+ assert(found_object);
+
+ if (require_fallback && !c->parent->is_fallback)
+ return 0;
+
+ r = check_access(bus, m, c, &error);
+ if (r < 0)
+ return bus_maybe_reply_error(m, r, &error);
+
+ r = node_vtable_get_userdata(bus, m->path, c->parent, &u, &error);
+ if (r <= 0)
+ return bus_maybe_reply_error(m, r, &error);
+ if (bus->nodes_modified)
+ return 0;
+
+ u = vtable_method_convert_userdata(c->vtable, u);
+
+ *found_object = true;
+
+ if (c->last_iteration == bus->iteration_counter)
+ return 0;
+
+ c->last_iteration = bus->iteration_counter;
+
+ r = sd_bus_message_rewind(m, true);
+ if (r < 0)
+ return r;
+
+ signature = sd_bus_message_get_signature(m, true);
+ if (!signature)
+ return -EINVAL;
+
+ if (!streq(strempty(c->vtable->x.method.signature), signature))
+ return sd_bus_reply_method_errorf(
+ m,
+ SD_BUS_ERROR_INVALID_ARGS,
+ "Invalid arguments '%s' to call %s.%s(), expecting '%s'.",
+ signature, c->interface, c->member, strempty(c->vtable->x.method.signature));
+
+ /* Keep track what the signature of the reply to this message
+ * should be, so that this can be enforced when sealing the
+ * reply. */
+ m->enforced_reply_signature = strempty(c->vtable->x.method.result);
+
+ if (c->vtable->x.method.handler) {
+ sd_bus_slot *slot;
+
+ slot = container_of(c->parent, sd_bus_slot, node_vtable);
+
+ bus->current_slot = sd_bus_slot_ref(slot);
+ bus->current_handler = c->vtable->x.method.handler;
+ bus->current_userdata = u;
+ r = c->vtable->x.method.handler(m, u, &error);
+ bus->current_userdata = NULL;
+ bus->current_handler = NULL;
+ bus->current_slot = sd_bus_slot_unref(slot);
+
+ return bus_maybe_reply_error(m, r, &error);
+ }
+
+ /* If the method callback is NULL, make this a successful NOP */
+ r = sd_bus_reply_method_return(m, NULL);
+ if (r < 0)
+ return r;
+
+ return 1;
+}
+
+static int invoke_property_get(
+ sd_bus *bus,
+ sd_bus_slot *slot,
+ const sd_bus_vtable *v,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ const void *p;
+ int r;
+
+ assert(bus);
+ assert(slot);
+ assert(v);
+ assert(path);
+ assert(interface);
+ assert(property);
+ assert(reply);
+
+ if (v->x.property.get) {
+
+ bus->current_slot = sd_bus_slot_ref(slot);
+ bus->current_userdata = userdata;
+ r = v->x.property.get(bus, path, interface, property, reply, userdata, error);
+ bus->current_userdata = NULL;
+ bus->current_slot = sd_bus_slot_unref(slot);
+
+ if (r < 0)
+ return r;
+ if (sd_bus_error_is_set(error))
+ return -sd_bus_error_get_errno(error);
+ return r;
+ }
+
+ /* Automatic handling if no callback is defined. */
+
+ if (streq(v->x.property.signature, "as"))
+ return sd_bus_message_append_strv(reply, *(char***) userdata);
+
+ assert(signature_is_single(v->x.property.signature, false));
+ assert(bus_type_is_basic(v->x.property.signature[0]));
+
+ switch (v->x.property.signature[0]) {
+
+ case SD_BUS_TYPE_STRING:
+ case SD_BUS_TYPE_SIGNATURE:
+ p = strempty(*(char**) userdata);
+ break;
+
+ case SD_BUS_TYPE_OBJECT_PATH:
+ p = *(char**) userdata;
+ assert(p);
+ break;
+
+ default:
+ p = userdata;
+ break;
+ }
+
+ return sd_bus_message_append_basic(reply, v->x.property.signature[0], p);
+}
+
+static int invoke_property_set(
+ sd_bus *bus,
+ sd_bus_slot *slot,
+ const sd_bus_vtable *v,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *value,
+ void *userdata,
+ sd_bus_error *error) {
+
+ int r;
+
+ assert(bus);
+ assert(slot);
+ assert(v);
+ assert(path);
+ assert(interface);
+ assert(property);
+ assert(value);
+
+ if (v->x.property.set) {
+
+ bus->current_slot = sd_bus_slot_ref(slot);
+ bus->current_userdata = userdata;
+ r = v->x.property.set(bus, path, interface, property, value, userdata, error);
+ bus->current_userdata = NULL;
+ bus->current_slot = sd_bus_slot_unref(slot);
+
+ if (r < 0)
+ return r;
+ if (sd_bus_error_is_set(error))
+ return -sd_bus_error_get_errno(error);
+ return r;
+ }
+
+ /* Automatic handling if no callback is defined. */
+
+ assert(signature_is_single(v->x.property.signature, false));
+ assert(bus_type_is_basic(v->x.property.signature[0]));
+
+ switch (v->x.property.signature[0]) {
+
+ case SD_BUS_TYPE_STRING:
+ case SD_BUS_TYPE_OBJECT_PATH:
+ case SD_BUS_TYPE_SIGNATURE: {
+ const char *p;
+ char *n;
+
+ r = sd_bus_message_read_basic(value, v->x.property.signature[0], &p);
+ if (r < 0)
+ return r;
+
+ n = strdup(p);
+ if (!n)
+ return -ENOMEM;
+
+ free(*(char**) userdata);
+ *(char**) userdata = n;
+
+ break;
+ }
+
+ default:
+ r = sd_bus_message_read_basic(value, v->x.property.signature[0], userdata);
+ if (r < 0)
+ return r;
+
+ break;
+ }
+
+ return 1;
+}
+
+static int property_get_set_callbacks_run(
+ sd_bus *bus,
+ sd_bus_message *m,
+ struct vtable_member *c,
+ bool require_fallback,
+ bool is_get,
+ bool *found_object) {
+
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ sd_bus_slot *slot;
+ void *u = NULL;
+ int r;
+
+ assert(bus);
+ assert(m);
+ assert(c);
+ assert(found_object);
+
+ if (require_fallback && !c->parent->is_fallback)
+ return 0;
+
+ r = vtable_property_get_userdata(bus, m->path, c, &u, &error);
+ if (r <= 0)
+ return bus_maybe_reply_error(m, r, &error);
+ if (bus->nodes_modified)
+ return 0;
+
+ slot = container_of(c->parent, sd_bus_slot, node_vtable);
+
+ *found_object = true;
+
+ r = sd_bus_message_new_method_return(m, &reply);
+ if (r < 0)
+ return r;
+
+ if (is_get) {
+ /* Note that we do not protect against reexecution
+ * here (using the last_iteration check, see below),
+ * should the node tree have changed and we got called
+ * again. We assume that property Get() calls are
+ * ultimately without side-effects or if they aren't
+ * then at least idempotent. */
+
+ r = sd_bus_message_open_container(reply, 'v', c->vtable->x.property.signature);
+ if (r < 0)
+ return r;
+
+ /* Note that we do not do an access check here. Read
+ * access to properties is always unrestricted, since
+ * PropertiesChanged signals broadcast contents
+ * anyway. */
+
+ r = invoke_property_get(bus, slot, c->vtable, m->path, c->interface, c->member, reply, u, &error);
+ if (r < 0)
+ return bus_maybe_reply_error(m, r, &error);
+
+ if (bus->nodes_modified)
+ return 0;
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return r;
+
+ } else {
+ const char *signature = NULL;
+ char type = 0;
+
+ if (c->vtable->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY)
+ return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_PROPERTY_READ_ONLY, "Property '%s' is not writable.", c->member);
+
+ /* Avoid that we call the set routine more than once
+ * if the processing of this message got restarted
+ * because the node tree changed. */
+ if (c->last_iteration == bus->iteration_counter)
+ return 0;
+
+ c->last_iteration = bus->iteration_counter;
+
+ r = sd_bus_message_peek_type(m, &type, &signature);
+ if (r < 0)
+ return r;
+
+ if (type != 'v' || !streq(strempty(signature), strempty(c->vtable->x.property.signature)))
+ return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Incorrect parameters for property '%s', expected '%s', got '%s'.", c->member, strempty(c->vtable->x.property.signature), strempty(signature));
+
+ r = sd_bus_message_enter_container(m, 'v', c->vtable->x.property.signature);
+ if (r < 0)
+ return r;
+
+ r = check_access(bus, m, c, &error);
+ if (r < 0)
+ return bus_maybe_reply_error(m, r, &error);
+
+ r = invoke_property_set(bus, slot, c->vtable, m->path, c->interface, c->member, m, u, &error);
+ if (r < 0)
+ return bus_maybe_reply_error(m, r, &error);
+
+ if (bus->nodes_modified)
+ return 0;
+
+ r = sd_bus_message_exit_container(m);
+ if (r < 0)
+ return r;
+ }
+
+ r = sd_bus_send(bus, reply, NULL);
+ if (r < 0)
+ return r;
+
+ return 1;
+}
+
+static int vtable_append_one_property(
+ sd_bus *bus,
+ sd_bus_message *reply,
+ const char *path,
+ struct node_vtable *c,
+ const sd_bus_vtable *v,
+ void *userdata,
+ sd_bus_error *error) {
+
+ sd_bus_slot *slot;
+ int r;
+
+ assert(bus);
+ assert(reply);
+ assert(path);
+ assert(c);
+ assert(v);
+
+ r = sd_bus_message_open_container(reply, 'e', "sv");
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append(reply, "s", v->x.property.member);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_open_container(reply, 'v', v->x.property.signature);
+ if (r < 0)
+ return r;
+
+ slot = container_of(c, sd_bus_slot, node_vtable);
+
+ r = invoke_property_get(bus, slot, v, path, c->interface, v->x.property.member, reply, vtable_property_convert_userdata(v, userdata), error);
+ if (r < 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+static int vtable_append_all_properties(
+ sd_bus *bus,
+ sd_bus_message *reply,
+ const char *path,
+ struct node_vtable *c,
+ void *userdata,
+ sd_bus_error *error) {
+
+ const sd_bus_vtable *v;
+ int r;
+
+ assert(bus);
+ assert(reply);
+ assert(path);
+ assert(c);
+
+ if (c->vtable[0].flags & SD_BUS_VTABLE_HIDDEN)
+ return 1;
+
+ for (v = c->vtable+1; v->type != _SD_BUS_VTABLE_END; v++) {
+ if (v->type != _SD_BUS_VTABLE_PROPERTY && v->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY)
+ continue;
+
+ if (v->flags & SD_BUS_VTABLE_HIDDEN)
+ continue;
+
+ if (v->flags & SD_BUS_VTABLE_PROPERTY_EXPLICIT)
+ continue;
+
+ r = vtable_append_one_property(bus, reply, path, c, v, userdata, error);
+ if (r < 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+ }
+
+ return 1;
+}
+
+static int property_get_all_callbacks_run(
+ sd_bus *bus,
+ sd_bus_message *m,
+ struct node_vtable *first,
+ bool require_fallback,
+ const char *iface,
+ bool *found_object) {
+
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ struct node_vtable *c;
+ bool found_interface;
+ int r;
+
+ assert(bus);
+ assert(m);
+ assert(found_object);
+
+ r = sd_bus_message_new_method_return(m, &reply);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_open_container(reply, 'a', "{sv}");
+ if (r < 0)
+ return r;
+
+ found_interface = !iface ||
+ streq(iface, "org.freedesktop.DBus.Properties") ||
+ streq(iface, "org.freedesktop.DBus.Peer") ||
+ streq(iface, "org.freedesktop.DBus.Introspectable");
+
+ LIST_FOREACH(vtables, c, first) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ void *u;
+
+ if (require_fallback && !c->is_fallback)
+ continue;
+
+ r = node_vtable_get_userdata(bus, m->path, c, &u, &error);
+ if (r < 0)
+ return bus_maybe_reply_error(m, r, &error);
+ if (bus->nodes_modified)
+ return 0;
+ if (r == 0)
+ continue;
+
+ *found_object = true;
+
+ if (iface && !streq(c->interface, iface))
+ continue;
+ found_interface = true;
+
+ r = vtable_append_all_properties(bus, reply, m->path, c, u, &error);
+ if (r < 0)
+ return bus_maybe_reply_error(m, r, &error);
+ if (bus->nodes_modified)
+ return 0;
+ }
+
+ if (!found_interface) {
+ r = sd_bus_reply_method_errorf(
+ m,
+ SD_BUS_ERROR_UNKNOWN_INTERFACE,
+ "Unknown interface '%s'.", iface);
+ if (r < 0)
+ return r;
+
+ return 1;
+ }
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_send(bus, reply, NULL);
+ if (r < 0)
+ return r;
+
+ return 1;
+}
+
+static int bus_node_exists(
+ sd_bus *bus,
+ struct node *n,
+ const char *path,
+ bool require_fallback) {
+
+ struct node_vtable *c;
+ struct node_callback *k;
+ int r;
+
+ assert(bus);
+ assert(n);
+ assert(path);
+
+ /* Tests if there's anything attached directly to this node
+ * for the specified path */
+
+ if (!require_fallback && (n->enumerators || n->object_managers))
+ return true;
+
+ LIST_FOREACH(callbacks, k, n->callbacks) {
+ if (require_fallback && !k->is_fallback)
+ continue;
+
+ return 1;
+ }
+
+ LIST_FOREACH(vtables, c, n->vtables) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+
+ if (require_fallback && !c->is_fallback)
+ continue;
+
+ r = node_vtable_get_userdata(bus, path, c, NULL, &error);
+ if (r != 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+ }
+
+ return 0;
+}
+
+static int process_introspect(
+ sd_bus *bus,
+ sd_bus_message *m,
+ struct node *n,
+ bool require_fallback,
+ bool *found_object) {
+
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ _cleanup_set_free_free_ Set *s = NULL;
+ const char *previous_interface = NULL;
+ struct introspect intro;
+ struct node_vtable *c;
+ bool empty;
+ int r;
+
+ assert(bus);
+ assert(m);
+ assert(n);
+ assert(found_object);
+
+ r = get_child_nodes(bus, m->path, n, 0, &s, &error);
+ if (r < 0)
+ return bus_maybe_reply_error(m, r, &error);
+ if (bus->nodes_modified)
+ return 0;
+
+ r = introspect_begin(&intro, bus->trusted);
+ if (r < 0)
+ return r;
+
+ r = introspect_write_default_interfaces(&intro, !require_fallback && n->object_managers);
+ if (r < 0)
+ return r;
+
+ empty = set_isempty(s);
+
+ LIST_FOREACH(vtables, c, n->vtables) {
+ if (require_fallback && !c->is_fallback)
+ continue;
+
+ r = node_vtable_get_userdata(bus, m->path, c, NULL, &error);
+ if (r < 0) {
+ r = bus_maybe_reply_error(m, r, &error);
+ goto finish;
+ }
+ if (bus->nodes_modified) {
+ r = 0;
+ goto finish;
+ }
+ if (r == 0)
+ continue;
+
+ empty = false;
+
+ if (c->vtable[0].flags & SD_BUS_VTABLE_HIDDEN)
+ continue;
+
+ if (!streq_ptr(previous_interface, c->interface)) {
+
+ if (previous_interface)
+ fputs(" </interface>\n", intro.f);
+
+ fprintf(intro.f, " <interface name=\"%s\">\n", c->interface);
+ }
+
+ r = introspect_write_interface(&intro, c->vtable);
+ if (r < 0)
+ goto finish;
+
+ previous_interface = c->interface;
+ }
+
+ if (previous_interface)
+ fputs(" </interface>\n", intro.f);
+
+ if (empty) {
+ /* Nothing?, let's see if we exist at all, and if not
+ * refuse to do anything */
+ r = bus_node_exists(bus, n, m->path, require_fallback);
+ if (r <= 0)
+ goto finish;
+ if (bus->nodes_modified) {
+ r = 0;
+ goto finish;
+ }
+ }
+
+ *found_object = true;
+
+ r = introspect_write_child_nodes(&intro, s, m->path);
+ if (r < 0)
+ goto finish;
+
+ r = introspect_finish(&intro, bus, m, &reply);
+ if (r < 0)
+ goto finish;
+
+ r = sd_bus_send(bus, reply, NULL);
+ if (r < 0)
+ goto finish;
+
+ r = 1;
+
+finish:
+ introspect_free(&intro);
+ return r;
+}
+
+static int object_manager_serialize_path(
+ sd_bus *bus,
+ sd_bus_message *reply,
+ const char *prefix,
+ const char *path,
+ bool require_fallback,
+ sd_bus_error *error) {
+
+ const char *previous_interface = NULL;
+ bool found_something = false;
+ struct node_vtable *i;
+ struct node *n;
+ int r;
+
+ assert(bus);
+ assert(reply);
+ assert(prefix);
+ assert(path);
+ assert(error);
+
+ n = hashmap_get(bus->nodes, prefix);
+ if (!n)
+ return 0;
+
+ LIST_FOREACH(vtables, i, n->vtables) {
+ void *u;
+
+ if (require_fallback && !i->is_fallback)
+ continue;
+
+ r = node_vtable_get_userdata(bus, path, i, &u, error);
+ if (r < 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+ if (r == 0)
+ continue;
+
+ if (!found_something) {
+
+ /* Open the object part */
+
+ r = sd_bus_message_open_container(reply, 'e', "oa{sa{sv}}");
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append(reply, "o", path);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_open_container(reply, 'a', "{sa{sv}}");
+ if (r < 0)
+ return r;
+
+ found_something = true;
+ }
+
+ if (!streq_ptr(previous_interface, i->interface)) {
+
+ /* Maybe close the previous interface part */
+
+ if (previous_interface) {
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return r;
+ }
+
+ /* Open the new interface part */
+
+ r = sd_bus_message_open_container(reply, 'e', "sa{sv}");
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append(reply, "s", i->interface);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_open_container(reply, 'a', "{sv}");
+ if (r < 0)
+ return r;
+ }
+
+ r = vtable_append_all_properties(bus, reply, path, i, u, error);
+ if (r < 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+
+ previous_interface = i->interface;
+ }
+
+ if (previous_interface) {
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return r;
+ }
+
+ if (found_something) {
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return r;
+ }
+
+ return 1;
+}
+
+static int object_manager_serialize_path_and_fallbacks(
+ sd_bus *bus,
+ sd_bus_message *reply,
+ const char *path,
+ sd_bus_error *error) {
+
+ char *prefix;
+ int r;
+
+ assert(bus);
+ assert(reply);
+ assert(path);
+ assert(error);
+
+ /* First, add all vtables registered for this path */
+ r = object_manager_serialize_path(bus, reply, path, path, false, error);
+ if (r < 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+
+ /* Second, add fallback vtables registered for any of the prefixes */
+ prefix = alloca(strlen(path) + 1);
+ OBJECT_PATH_FOREACH_PREFIX(prefix, path) {
+ r = object_manager_serialize_path(bus, reply, prefix, path, true, error);
+ if (r < 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+ }
+
+ return 0;
+}
+
+static int process_get_managed_objects(
+ sd_bus *bus,
+ sd_bus_message *m,
+ struct node *n,
+ bool require_fallback,
+ bool *found_object) {
+
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ _cleanup_set_free_free_ Set *s = NULL;
+ Iterator i;
+ char *path;
+ int r;
+
+ assert(bus);
+ assert(m);
+ assert(n);
+ assert(found_object);
+
+ /* Spec says, GetManagedObjects() is only implemented on the root of a
+ * sub-tree. Therefore, we require a registered object-manager on
+ * exactly the queried path, otherwise, we refuse to respond. */
+
+ if (require_fallback || !n->object_managers)
+ return 0;
+
+ r = get_child_nodes(bus, m->path, n, CHILDREN_RECURSIVE, &s, &error);
+ if (r < 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+
+ r = sd_bus_message_new_method_return(m, &reply);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_open_container(reply, 'a', "{oa{sa{sv}}}");
+ if (r < 0)
+ return r;
+
+ SET_FOREACH(path, s, i) {
+ r = object_manager_serialize_path_and_fallbacks(bus, reply, path, &error);
+ if (r < 0)
+ return r;
+
+ if (bus->nodes_modified)
+ return 0;
+ }
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_send(bus, reply, NULL);
+ if (r < 0)
+ return r;
+
+ return 1;
+}
+
+static int object_find_and_run(
+ sd_bus *bus,
+ sd_bus_message *m,
+ const char *p,
+ bool require_fallback,
+ bool *found_object) {
+
+ struct node *n;
+ struct vtable_member vtable_key, *v;
+ int r;
+
+ assert(bus);
+ assert(m);
+ assert(p);
+ assert(found_object);
+
+ n = hashmap_get(bus->nodes, p);
+ if (!n)
+ return 0;
+
+ /* First, try object callbacks */
+ r = node_callbacks_run(bus, m, n->callbacks, require_fallback, found_object);
+ if (r != 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+
+ if (!m->interface || !m->member)
+ return 0;
+
+ /* Then, look for a known method */
+ vtable_key.path = (char*) p;
+ vtable_key.interface = m->interface;
+ vtable_key.member = m->member;
+
+ v = hashmap_get(bus->vtable_methods, &vtable_key);
+ if (v) {
+ r = method_callbacks_run(bus, m, v, require_fallback, found_object);
+ if (r != 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+ }
+
+ /* Then, look for a known property */
+ if (streq(m->interface, "org.freedesktop.DBus.Properties")) {
+ bool get = false;
+
+ get = streq(m->member, "Get");
+
+ if (get || streq(m->member, "Set")) {
+
+ r = sd_bus_message_rewind(m, true);
+ if (r < 0)
+ return r;
+
+ vtable_key.path = (char*) p;
+
+ r = sd_bus_message_read(m, "ss", &vtable_key.interface, &vtable_key.member);
+ if (r < 0)
+ return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected interface and member parameters");
+
+ v = hashmap_get(bus->vtable_properties, &vtable_key);
+ if (v) {
+ r = property_get_set_callbacks_run(bus, m, v, require_fallback, get, found_object);
+ if (r != 0)
+ return r;
+ }
+
+ } else if (streq(m->member, "GetAll")) {
+ const char *iface;
+
+ r = sd_bus_message_rewind(m, true);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_read(m, "s", &iface);
+ if (r < 0)
+ return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected interface parameter");
+
+ if (iface[0] == 0)
+ iface = NULL;
+
+ r = property_get_all_callbacks_run(bus, m, n->vtables, require_fallback, iface, found_object);
+ if (r != 0)
+ return r;
+ }
+
+ } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Introspectable", "Introspect")) {
+
+ if (!isempty(sd_bus_message_get_signature(m, true)))
+ return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected no parameters");
+
+ r = process_introspect(bus, m, n, require_fallback, found_object);
+ if (r != 0)
+ return r;
+
+ } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.ObjectManager", "GetManagedObjects")) {
+
+ if (!isempty(sd_bus_message_get_signature(m, true)))
+ return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected no parameters");
+
+ r = process_get_managed_objects(bus, m, n, require_fallback, found_object);
+ if (r != 0)
+ return r;
+ }
+
+ if (bus->nodes_modified)
+ return 0;
+
+ if (!*found_object) {
+ r = bus_node_exists(bus, n, m->path, require_fallback);
+ if (r < 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+ if (r > 0)
+ *found_object = true;
+ }
+
+ return 0;
+}
+
+int bus_process_object(sd_bus *bus, sd_bus_message *m) {
+ int r;
+ size_t pl;
+ bool found_object = false;
+
+ assert(bus);
+ assert(m);
+
+ if (bus->hello_flags & KDBUS_HELLO_MONITOR)
+ return 0;
+
+ if (m->header->type != SD_BUS_MESSAGE_METHOD_CALL)
+ return 0;
+
+ if (hashmap_isempty(bus->nodes))
+ return 0;
+
+ /* Never respond to broadcast messages */
+ if (bus->bus_client && !m->destination)
+ return 0;
+
+ assert(m->path);
+ assert(m->member);
+
+ pl = strlen(m->path);
+ do {
+ char prefix[pl+1];
+
+ bus->nodes_modified = false;
+
+ r = object_find_and_run(bus, m, m->path, false, &found_object);
+ if (r != 0)
+ return r;
+
+ /* Look for fallback prefixes */
+ OBJECT_PATH_FOREACH_PREFIX(prefix, m->path) {
+
+ if (bus->nodes_modified)
+ break;
+
+ r = object_find_and_run(bus, m, prefix, true, &found_object);
+ if (r != 0)
+ return r;
+ }
+
+ } while (bus->nodes_modified);
+
+ if (!found_object)
+ return 0;
+
+ if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Properties", "Get") ||
+ sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Properties", "Set"))
+ r = sd_bus_reply_method_errorf(
+ m,
+ SD_BUS_ERROR_UNKNOWN_PROPERTY,
+ "Unknown property or interface.");
+ else
+ r = sd_bus_reply_method_errorf(
+ m,
+ SD_BUS_ERROR_UNKNOWN_METHOD,
+ "Unknown method '%s' or interface '%s'.", m->member, m->interface);
+
+ if (r < 0)
+ return r;
+
+ return 1;
+}
+
+static struct node *bus_node_allocate(sd_bus *bus, const char *path) {
+ struct node *n, *parent;
+ const char *e;
+ _cleanup_free_ char *s = NULL;
+ char *p;
+ int r;
+
+ assert(bus);
+ assert(path);
+ assert(path[0] == '/');
+
+ n = hashmap_get(bus->nodes, path);
+ if (n)
+ return n;
+
+ r = hashmap_ensure_allocated(&bus->nodes, &string_hash_ops);
+ if (r < 0)
+ return NULL;
+
+ s = strdup(path);
+ if (!s)
+ return NULL;
+
+ if (streq(path, "/"))
+ parent = NULL;
+ else {
+ e = strrchr(path, '/');
+ assert(e);
+
+ p = strndupa(path, MAX(1, e - path));
+
+ parent = bus_node_allocate(bus, p);
+ if (!parent)
+ return NULL;
+ }
+
+ n = new0(struct node, 1);
+ if (!n)
+ return NULL;
+
+ n->parent = parent;
+ n->path = s;
+ s = NULL; /* do not free */
+
+ r = hashmap_put(bus->nodes, n->path, n);
+ if (r < 0) {
+ free(n->path);
+ free(n);
+ return NULL;
+ }
+
+ if (parent)
+ LIST_PREPEND(siblings, parent->child, n);
+
+ return n;
+}
+
+void bus_node_gc(sd_bus *b, struct node *n) {
+ assert(b);
+
+ if (!n)
+ return;
+
+ if (n->child ||
+ n->callbacks ||
+ n->vtables ||
+ n->enumerators ||
+ n->object_managers)
+ return;
+
+ assert(hashmap_remove(b->nodes, n->path) == n);
+
+ if (n->parent)
+ LIST_REMOVE(siblings, n->parent->child, n);
+
+ free(n->path);
+ bus_node_gc(b, n->parent);
+ free(n);
+}
+
+static int bus_find_parent_object_manager(sd_bus *bus, struct node **out, const char *path) {
+ struct node *n;
+
+ assert(bus);
+ assert(path);
+
+ n = hashmap_get(bus->nodes, path);
+ if (!n) {
+ char *prefix;
+
+ prefix = alloca(strlen(path) + 1);
+ OBJECT_PATH_FOREACH_PREFIX(prefix, path) {
+ n = hashmap_get(bus->nodes, prefix);
+ if (n)
+ break;
+ }
+ }
+
+ while (n && !n->object_managers)
+ n = n->parent;
+
+ if (out)
+ *out = n;
+ return !!n;
+}
+
+static int bus_add_object(
+ sd_bus *bus,
+ sd_bus_slot **slot,
+ bool fallback,
+ const char *path,
+ sd_bus_message_handler_t callback,
+ void *userdata) {
+
+ sd_bus_slot *s;
+ struct node *n;
+ int r;
+
+ assert_return(bus, -EINVAL);
+ assert_return(object_path_is_valid(path), -EINVAL);
+ assert_return(callback, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ n = bus_node_allocate(bus, path);
+ if (!n)
+ return -ENOMEM;
+
+ s = bus_slot_allocate(bus, !slot, BUS_NODE_CALLBACK, sizeof(struct node_callback), userdata);
+ if (!s) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ s->node_callback.callback = callback;
+ s->node_callback.is_fallback = fallback;
+
+ s->node_callback.node = n;
+ LIST_PREPEND(callbacks, n->callbacks, &s->node_callback);
+ bus->nodes_modified = true;
+
+ if (slot)
+ *slot = s;
+
+ return 0;
+
+fail:
+ sd_bus_slot_unref(s);
+ bus_node_gc(bus, n);
+
+ return r;
+}
+
+_public_ int sd_bus_add_object(
+ sd_bus *bus,
+ sd_bus_slot **slot,
+ const char *path,
+ sd_bus_message_handler_t callback,
+ void *userdata) {
+
+ return bus_add_object(bus, slot, false, path, callback, userdata);
+}
+
+_public_ int sd_bus_add_fallback(
+ sd_bus *bus,
+ sd_bus_slot **slot,
+ const char *prefix,
+ sd_bus_message_handler_t callback,
+ void *userdata) {
+
+ return bus_add_object(bus, slot, true, prefix, callback, userdata);
+}
+
+static void vtable_member_hash_func(const void *a, struct siphash *state) {
+ const struct vtable_member *m = a;
+
+ assert(m);
+
+ string_hash_func(m->path, state);
+ string_hash_func(m->interface, state);
+ string_hash_func(m->member, state);
+}
+
+static int vtable_member_compare_func(const void *a, const void *b) {
+ const struct vtable_member *x = a, *y = b;
+ int r;
+
+ assert(x);
+ assert(y);
+
+ r = strcmp(x->path, y->path);
+ if (r != 0)
+ return r;
+
+ r = strcmp(x->interface, y->interface);
+ if (r != 0)
+ return r;
+
+ return strcmp(x->member, y->member);
+}
+
+static const struct hash_ops vtable_member_hash_ops = {
+ .hash = vtable_member_hash_func,
+ .compare = vtable_member_compare_func
+};
+
+static int add_object_vtable_internal(
+ sd_bus *bus,
+ sd_bus_slot **slot,
+ const char *path,
+ const char *interface,
+ const sd_bus_vtable *vtable,
+ bool fallback,
+ sd_bus_object_find_t find,
+ void *userdata) {
+
+ sd_bus_slot *s = NULL;
+ struct node_vtable *i, *existing = NULL;
+ const sd_bus_vtable *v;
+ struct node *n;
+ int r;
+
+ assert_return(bus, -EINVAL);
+ assert_return(object_path_is_valid(path), -EINVAL);
+ assert_return(interface_name_is_valid(interface), -EINVAL);
+ assert_return(vtable, -EINVAL);
+ assert_return(vtable[0].type == _SD_BUS_VTABLE_START, -EINVAL);
+ assert_return(vtable[0].x.start.element_size == sizeof(struct sd_bus_vtable), -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+ assert_return(!streq(interface, "org.freedesktop.DBus.Properties") &&
+ !streq(interface, "org.freedesktop.DBus.Introspectable") &&
+ !streq(interface, "org.freedesktop.DBus.Peer") &&
+ !streq(interface, "org.freedesktop.DBus.ObjectManager"), -EINVAL);
+
+ r = hashmap_ensure_allocated(&bus->vtable_methods, &vtable_member_hash_ops);
+ if (r < 0)
+ return r;
+
+ r = hashmap_ensure_allocated(&bus->vtable_properties, &vtable_member_hash_ops);
+ if (r < 0)
+ return r;
+
+ n = bus_node_allocate(bus, path);
+ if (!n)
+ return -ENOMEM;
+
+ LIST_FOREACH(vtables, i, n->vtables) {
+ if (i->is_fallback != fallback) {
+ r = -EPROTOTYPE;
+ goto fail;
+ }
+
+ if (streq(i->interface, interface)) {
+
+ if (i->vtable == vtable) {
+ r = -EEXIST;
+ goto fail;
+ }
+
+ existing = i;
+ }
+ }
+
+ s = bus_slot_allocate(bus, !slot, BUS_NODE_VTABLE, sizeof(struct node_vtable), userdata);
+ if (!s) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ s->node_vtable.is_fallback = fallback;
+ s->node_vtable.vtable = vtable;
+ s->node_vtable.find = find;
+
+ s->node_vtable.interface = strdup(interface);
+ if (!s->node_vtable.interface) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ for (v = s->node_vtable.vtable+1; v->type != _SD_BUS_VTABLE_END; v++) {
+
+ switch (v->type) {
+
+ case _SD_BUS_VTABLE_METHOD: {
+ struct vtable_member *m;
+
+ if (!member_name_is_valid(v->x.method.member) ||
+ !signature_is_valid(strempty(v->x.method.signature), false) ||
+ !signature_is_valid(strempty(v->x.method.result), false) ||
+ !(v->x.method.handler || (isempty(v->x.method.signature) && isempty(v->x.method.result))) ||
+ v->flags & (SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE|SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION)) {
+ r = -EINVAL;
+ goto fail;
+ }
+
+ m = new0(struct vtable_member, 1);
+ if (!m) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ m->parent = &s->node_vtable;
+ m->path = n->path;
+ m->interface = s->node_vtable.interface;
+ m->member = v->x.method.member;
+ m->vtable = v;
+
+ r = hashmap_put(bus->vtable_methods, m, m);
+ if (r < 0) {
+ free(m);
+ goto fail;
+ }
+
+ break;
+ }
+
+ case _SD_BUS_VTABLE_WRITABLE_PROPERTY:
+
+ if (!(v->x.property.set || bus_type_is_basic(v->x.property.signature[0]))) {
+ r = -EINVAL;
+ goto fail;
+ }
+
+ if (v->flags & SD_BUS_VTABLE_PROPERTY_CONST) {
+ r = -EINVAL;
+ goto fail;
+ }
+
+ /* Fall through */
+
+ case _SD_BUS_VTABLE_PROPERTY: {
+ struct vtable_member *m;
+
+ if (!member_name_is_valid(v->x.property.member) ||
+ !signature_is_single(v->x.property.signature, false) ||
+ !(v->x.property.get || bus_type_is_basic(v->x.property.signature[0]) || streq(v->x.property.signature, "as")) ||
+ (v->flags & SD_BUS_VTABLE_METHOD_NO_REPLY) ||
+ (!!(v->flags & SD_BUS_VTABLE_PROPERTY_CONST) + !!(v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE) + !!(v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION)) > 1 ||
+ ((v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE) && (v->flags & SD_BUS_VTABLE_PROPERTY_EXPLICIT)) ||
+ (v->flags & SD_BUS_VTABLE_UNPRIVILEGED && v->type == _SD_BUS_VTABLE_PROPERTY)) {
+ r = -EINVAL;
+ goto fail;
+ }
+
+ m = new0(struct vtable_member, 1);
+ if (!m) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ m->parent = &s->node_vtable;
+ m->path = n->path;
+ m->interface = s->node_vtable.interface;
+ m->member = v->x.property.member;
+ m->vtable = v;
+
+ r = hashmap_put(bus->vtable_properties, m, m);
+ if (r < 0) {
+ free(m);
+ goto fail;
+ }
+
+ break;
+ }
+
+ case _SD_BUS_VTABLE_SIGNAL:
+
+ if (!member_name_is_valid(v->x.signal.member) ||
+ !signature_is_valid(strempty(v->x.signal.signature), false) ||
+ v->flags & SD_BUS_VTABLE_UNPRIVILEGED) {
+ r = -EINVAL;
+ goto fail;
+ }
+
+ break;
+
+ default:
+ r = -EINVAL;
+ goto fail;
+ }
+ }
+
+ s->node_vtable.node = n;
+ LIST_INSERT_AFTER(vtables, n->vtables, existing, &s->node_vtable);
+ bus->nodes_modified = true;
+
+ if (slot)
+ *slot = s;
+
+ return 0;
+
+fail:
+ sd_bus_slot_unref(s);
+ bus_node_gc(bus, n);
+
+ return r;
+}
+
+_public_ int sd_bus_add_object_vtable(
+ sd_bus *bus,
+ sd_bus_slot **slot,
+ const char *path,
+ const char *interface,
+ const sd_bus_vtable *vtable,
+ void *userdata) {
+
+ return add_object_vtable_internal(bus, slot, path, interface, vtable, false, NULL, userdata);
+}
+
+_public_ int sd_bus_add_fallback_vtable(
+ sd_bus *bus,
+ sd_bus_slot **slot,
+ const char *prefix,
+ const char *interface,
+ const sd_bus_vtable *vtable,
+ sd_bus_object_find_t find,
+ void *userdata) {
+
+ return add_object_vtable_internal(bus, slot, prefix, interface, vtable, true, find, userdata);
+}
+
+_public_ int sd_bus_add_node_enumerator(
+ sd_bus *bus,
+ sd_bus_slot **slot,
+ const char *path,
+ sd_bus_node_enumerator_t callback,
+ void *userdata) {
+
+ sd_bus_slot *s;
+ struct node *n;
+ int r;
+
+ assert_return(bus, -EINVAL);
+ assert_return(object_path_is_valid(path), -EINVAL);
+ assert_return(callback, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ n = bus_node_allocate(bus, path);
+ if (!n)
+ return -ENOMEM;
+
+ s = bus_slot_allocate(bus, !slot, BUS_NODE_ENUMERATOR, sizeof(struct node_enumerator), userdata);
+ if (!s) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ s->node_enumerator.callback = callback;
+
+ s->node_enumerator.node = n;
+ LIST_PREPEND(enumerators, n->enumerators, &s->node_enumerator);
+ bus->nodes_modified = true;
+
+ if (slot)
+ *slot = s;
+
+ return 0;
+
+fail:
+ sd_bus_slot_unref(s);
+ bus_node_gc(bus, n);
+
+ return r;
+}
+
+static int emit_properties_changed_on_interface(
+ sd_bus *bus,
+ const char *prefix,
+ const char *path,
+ const char *interface,
+ bool require_fallback,
+ bool *found_interface,
+ char **names) {
+
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+ bool has_invalidating = false, has_changing = false;
+ struct vtable_member key = {};
+ struct node_vtable *c;
+ struct node *n;
+ char **property;
+ void *u = NULL;
+ int r;
+
+ assert(bus);
+ assert(prefix);
+ assert(path);
+ assert(interface);
+ assert(found_interface);
+
+ n = hashmap_get(bus->nodes, prefix);
+ if (!n)
+ return 0;
+
+ r = sd_bus_message_new_signal(bus, &m, path, "org.freedesktop.DBus.Properties", "PropertiesChanged");
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append(m, "s", interface);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_open_container(m, 'a', "{sv}");
+ if (r < 0)
+ return r;
+
+ key.path = prefix;
+ key.interface = interface;
+
+ LIST_FOREACH(vtables, c, n->vtables) {
+ if (require_fallback && !c->is_fallback)
+ continue;
+
+ if (!streq(c->interface, interface))
+ continue;
+
+ r = node_vtable_get_userdata(bus, path, c, &u, &error);
+ if (r < 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+ if (r == 0)
+ continue;
+
+ *found_interface = true;
+
+ if (names) {
+ /* If the caller specified a list of
+ * properties we include exactly those in the
+ * PropertiesChanged message */
+
+ STRV_FOREACH(property, names) {
+ struct vtable_member *v;
+
+ assert_return(member_name_is_valid(*property), -EINVAL);
+
+ key.member = *property;
+ v = hashmap_get(bus->vtable_properties, &key);
+ if (!v)
+ return -ENOENT;
+
+ /* If there are two vtables for the same
+ * interface, let's handle this property when
+ * we come to that vtable. */
+ if (c != v->parent)
+ continue;
+
+ assert_return(v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE ||
+ v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION, -EDOM);
+
+ assert_return(!(v->vtable->flags & SD_BUS_VTABLE_HIDDEN), -EDOM);
+
+ if (v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION) {
+ has_invalidating = true;
+ continue;
+ }
+
+ has_changing = true;
+
+ r = vtable_append_one_property(bus, m, m->path, c, v->vtable, u, &error);
+ if (r < 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+ }
+ } else {
+ const sd_bus_vtable *v;
+
+ /* If the caller specified no properties list
+ * we include all properties that are marked
+ * as changing in the message. */
+
+ for (v = c->vtable+1; v->type != _SD_BUS_VTABLE_END; v++) {
+ if (v->type != _SD_BUS_VTABLE_PROPERTY && v->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY)
+ continue;
+
+ if (v->flags & SD_BUS_VTABLE_HIDDEN)
+ continue;
+
+ if (v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION) {
+ has_invalidating = true;
+ continue;
+ }
+
+ if (!(v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE))
+ continue;
+
+ has_changing = true;
+
+ r = vtable_append_one_property(bus, m, m->path, c, v, u, &error);
+ if (r < 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+ }
+ }
+ }
+
+ if (!has_invalidating && !has_changing)
+ return 0;
+
+ r = sd_bus_message_close_container(m);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_open_container(m, 'a', "s");
+ if (r < 0)
+ return r;
+
+ if (has_invalidating) {
+ LIST_FOREACH(vtables, c, n->vtables) {
+ if (require_fallback && !c->is_fallback)
+ continue;
+
+ if (!streq(c->interface, interface))
+ continue;
+
+ r = node_vtable_get_userdata(bus, path, c, &u, &error);
+ if (r < 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+ if (r == 0)
+ continue;
+
+ if (names) {
+ STRV_FOREACH(property, names) {
+ struct vtable_member *v;
+
+ key.member = *property;
+ assert_se(v = hashmap_get(bus->vtable_properties, &key));
+ assert(c == v->parent);
+
+ if (!(v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION))
+ continue;
+
+ r = sd_bus_message_append(m, "s", *property);
+ if (r < 0)
+ return r;
+ }
+ } else {
+ const sd_bus_vtable *v;
+
+ for (v = c->vtable+1; v->type != _SD_BUS_VTABLE_END; v++) {
+ if (v->type != _SD_BUS_VTABLE_PROPERTY && v->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY)
+ continue;
+
+ if (v->flags & SD_BUS_VTABLE_HIDDEN)
+ continue;
+
+ if (!(v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION))
+ continue;
+
+ r = sd_bus_message_append(m, "s", v->x.property.member);
+ if (r < 0)
+ return r;
+ }
+ }
+ }
+ }
+
+ r = sd_bus_message_close_container(m);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_send(bus, m, NULL);
+ if (r < 0)
+ return r;
+
+ return 1;
+}
+
+_public_ int sd_bus_emit_properties_changed_strv(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ char **names) {
+
+ BUS_DONT_DESTROY(bus);
+ bool found_interface = false;
+ char *prefix;
+ int r;
+
+ assert_return(bus, -EINVAL);
+ assert_return(object_path_is_valid(path), -EINVAL);
+ assert_return(interface_name_is_valid(interface), -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
+ /* A non-NULL but empty names list means nothing needs to be
+ generated. A NULL list OTOH indicates that all properties
+ that are set to EMITS_CHANGE or EMITS_INVALIDATION shall be
+ included in the PropertiesChanged message. */
+ if (names && names[0] == NULL)
+ return 0;
+
+ do {
+ bus->nodes_modified = false;
+
+ r = emit_properties_changed_on_interface(bus, path, path, interface, false, &found_interface, names);
+ if (r != 0)
+ return r;
+ if (bus->nodes_modified)
+ continue;
+
+ prefix = alloca(strlen(path) + 1);
+ OBJECT_PATH_FOREACH_PREFIX(prefix, path) {
+ r = emit_properties_changed_on_interface(bus, prefix, path, interface, true, &found_interface, names);
+ if (r != 0)
+ return r;
+ if (bus->nodes_modified)
+ break;
+ }
+
+ } while (bus->nodes_modified);
+
+ return found_interface ? 0 : -ENOENT;
+}
+
+_public_ int sd_bus_emit_properties_changed(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *name, ...) {
+
+ char **names;
+
+ assert_return(bus, -EINVAL);
+ assert_return(object_path_is_valid(path), -EINVAL);
+ assert_return(interface_name_is_valid(interface), -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
+ if (!name)
+ return 0;
+
+ names = strv_from_stdarg_alloca(name);
+
+ return sd_bus_emit_properties_changed_strv(bus, path, interface, names);
+}
+
+static int object_added_append_all_prefix(
+ sd_bus *bus,
+ sd_bus_message *m,
+ Set *s,
+ const char *prefix,
+ const char *path,
+ bool require_fallback) {
+
+ const char *previous_interface = NULL;
+ struct node_vtable *c;
+ struct node *n;
+ int r;
+
+ assert(bus);
+ assert(m);
+ assert(s);
+ assert(prefix);
+ assert(path);
+
+ n = hashmap_get(bus->nodes, prefix);
+ if (!n)
+ return 0;
+
+ LIST_FOREACH(vtables, c, n->vtables) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ void *u = NULL;
+
+ if (require_fallback && !c->is_fallback)
+ continue;
+
+ r = node_vtable_get_userdata(bus, path, c, &u, &error);
+ if (r < 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+ if (r == 0)
+ continue;
+
+ if (!streq_ptr(c->interface, previous_interface)) {
+ /* If a child-node already handled this interface, we
+ * skip it on any of its parents. The child vtables
+ * always fully override any conflicting vtables of
+ * any parent node. */
+ if (set_get(s, c->interface))
+ continue;
+
+ r = set_put(s, c->interface);
+ if (r < 0)
+ return r;
+
+ if (previous_interface) {
+ r = sd_bus_message_close_container(m);
+ if (r < 0)
+ return r;
+ r = sd_bus_message_close_container(m);
+ if (r < 0)
+ return r;
+ }
+
+ r = sd_bus_message_open_container(m, 'e', "sa{sv}");
+ if (r < 0)
+ return r;
+ r = sd_bus_message_append(m, "s", c->interface);
+ if (r < 0)
+ return r;
+ r = sd_bus_message_open_container(m, 'a', "{sv}");
+ if (r < 0)
+ return r;
+
+ previous_interface = c->interface;
+ }
+
+ r = vtable_append_all_properties(bus, m, path, c, u, &error);
+ if (r < 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+ }
+
+ if (previous_interface) {
+ r = sd_bus_message_close_container(m);
+ if (r < 0)
+ return r;
+ r = sd_bus_message_close_container(m);
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
+static int object_added_append_all(sd_bus *bus, sd_bus_message *m, const char *path) {
+ _cleanup_set_free_ Set *s = NULL;
+ char *prefix;
+ int r;
+
+ assert(bus);
+ assert(m);
+ assert(path);
+
+ /*
+ * This appends all interfaces registered on path @path. We first add
+ * the builtin interfaces, which are always available and handled by
+ * sd-bus. Then, we add all interfaces registered on the exact node,
+ * followed by all fallback interfaces registered on any parent prefix.
+ *
+ * If an interface is registered multiple times on the same node with
+ * different vtables, we merge all the properties across all vtables.
+ * However, if a child node has the same interface registered as one of
+ * its parent nodes has as fallback, we make the child overwrite the
+ * parent instead of extending it. Therefore, we keep a "Set" of all
+ * handled interfaces during parent traversal, so we skip interfaces on
+ * a parent that were overwritten by a child.
+ */
+
+ s = set_new(&string_hash_ops);
+ if (!s)
+ return -ENOMEM;
+
+ r = sd_bus_message_append(m, "{sa{sv}}", "org.freedesktop.DBus.Peer", 0);
+ if (r < 0)
+ return r;
+ r = sd_bus_message_append(m, "{sa{sv}}", "org.freedesktop.DBus.Introspectable", 0);
+ if (r < 0)
+ return r;
+ r = sd_bus_message_append(m, "{sa{sv}}", "org.freedesktop.DBus.Properties", 0);
+ if (r < 0)
+ return r;
+ r = sd_bus_message_append(m, "{sa{sv}}", "org.freedesktop.DBus.ObjectManager", 0);
+ if (r < 0)
+ return r;
+
+ r = object_added_append_all_prefix(bus, m, s, path, path, false);
+ if (r < 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+
+ prefix = alloca(strlen(path) + 1);
+ OBJECT_PATH_FOREACH_PREFIX(prefix, path) {
+ r = object_added_append_all_prefix(bus, m, s, prefix, path, true);
+ if (r < 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+ }
+
+ return 0;
+}
+
+_public_ int sd_bus_emit_object_added(sd_bus *bus, const char *path) {
+ BUS_DONT_DESTROY(bus);
+
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+ struct node *object_manager;
+ int r;
+
+ /*
+ * This emits an InterfacesAdded signal on the given path, by iterating
+ * all registered vtables and fallback vtables on the path. All
+ * properties are queried and included in the signal.
+ * This call is equivalent to sd_bus_emit_interfaces_added() with an
+ * explicit list of registered interfaces. However, unlike
+ * interfaces_added(), this call can figure out the list of supported
+ * interfaces itself. Furthermore, it properly adds the builtin
+ * org.freedesktop.DBus.* interfaces.
+ */
+
+ assert_return(bus, -EINVAL);
+ assert_return(object_path_is_valid(path), -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
+ r = bus_find_parent_object_manager(bus, &object_manager, path);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return -ESRCH;
+
+ do {
+ bus->nodes_modified = false;
+ m = sd_bus_message_unref(m);
+
+ r = sd_bus_message_new_signal(bus, &m, object_manager->path, "org.freedesktop.DBus.ObjectManager", "InterfacesAdded");
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append_basic(m, 'o', path);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_open_container(m, 'a', "{sa{sv}}");
+ if (r < 0)
+ return r;
+
+ r = object_added_append_all(bus, m, path);
+ if (r < 0)
+ return r;
+
+ if (bus->nodes_modified)
+ continue;
+
+ r = sd_bus_message_close_container(m);
+ if (r < 0)
+ return r;
+
+ } while (bus->nodes_modified);
+
+ return sd_bus_send(bus, m, NULL);
+}
+
+static int object_removed_append_all_prefix(
+ sd_bus *bus,
+ sd_bus_message *m,
+ Set *s,
+ const char *prefix,
+ const char *path,
+ bool require_fallback) {
+
+ const char *previous_interface = NULL;
+ struct node_vtable *c;
+ struct node *n;
+ int r;
+
+ assert(bus);
+ assert(m);
+ assert(s);
+ assert(prefix);
+ assert(path);
+
+ n = hashmap_get(bus->nodes, prefix);
+ if (!n)
+ return 0;
+
+ LIST_FOREACH(vtables, c, n->vtables) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ void *u = NULL;
+
+ if (require_fallback && !c->is_fallback)
+ continue;
+ if (streq_ptr(c->interface, previous_interface))
+ continue;
+
+ /* If a child-node already handled this interface, we
+ * skip it on any of its parents. The child vtables
+ * always fully override any conflicting vtables of
+ * any parent node. */
+ if (set_get(s, c->interface))
+ continue;
+
+ r = node_vtable_get_userdata(bus, path, c, &u, &error);
+ if (r < 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+ if (r == 0)
+ continue;
+
+ r = set_put(s, c->interface);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append(m, "s", c->interface);
+ if (r < 0)
+ return r;
+
+ previous_interface = c->interface;
+ }
+
+ return 0;
+}
+
+static int object_removed_append_all(sd_bus *bus, sd_bus_message *m, const char *path) {
+ _cleanup_set_free_ Set *s = NULL;
+ char *prefix;
+ int r;
+
+ assert(bus);
+ assert(m);
+ assert(path);
+
+ /* see sd_bus_emit_object_added() for details */
+
+ s = set_new(&string_hash_ops);
+ if (!s)
+ return -ENOMEM;
+
+ r = sd_bus_message_append(m, "s", "org.freedesktop.DBus.Peer");
+ if (r < 0)
+ return r;
+ r = sd_bus_message_append(m, "s", "org.freedesktop.DBus.Introspectable");
+ if (r < 0)
+ return r;
+ r = sd_bus_message_append(m, "s", "org.freedesktop.DBus.Properties");
+ if (r < 0)
+ return r;
+ r = sd_bus_message_append(m, "s", "org.freedesktop.DBus.ObjectManager");
+ if (r < 0)
+ return r;
+
+ r = object_removed_append_all_prefix(bus, m, s, path, path, false);
+ if (r < 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+
+ prefix = alloca(strlen(path) + 1);
+ OBJECT_PATH_FOREACH_PREFIX(prefix, path) {
+ r = object_removed_append_all_prefix(bus, m, s, prefix, path, true);
+ if (r < 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+ }
+
+ return 0;
+}
+
+_public_ int sd_bus_emit_object_removed(sd_bus *bus, const char *path) {
+ BUS_DONT_DESTROY(bus);
+
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+ struct node *object_manager;
+ int r;
+
+ /*
+ * This is like sd_bus_emit_object_added(), but emits an
+ * InterfacesRemoved signal on the given path. This only includes any
+ * registered interfaces but skips the properties. Note that this will
+ * call into the find() callbacks of any registered vtable. Therefore,
+ * you must call this function before destroying/unlinking your object.
+ * Otherwise, the list of interfaces will be incomplete. However, note
+ * that this will *NOT* call into any property callback. Therefore, the
+ * object might be in an "destructed" state, as long as we can find it.
+ */
+
+ assert_return(bus, -EINVAL);
+ assert_return(object_path_is_valid(path), -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
+ r = bus_find_parent_object_manager(bus, &object_manager, path);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return -ESRCH;
+
+ do {
+ bus->nodes_modified = false;
+ m = sd_bus_message_unref(m);
+
+ r = sd_bus_message_new_signal(bus, &m, object_manager->path, "org.freedesktop.DBus.ObjectManager", "InterfacesRemoved");
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append_basic(m, 'o', path);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_open_container(m, 'a', "s");
+ if (r < 0)
+ return r;
+
+ r = object_removed_append_all(bus, m, path);
+ if (r < 0)
+ return r;
+
+ if (bus->nodes_modified)
+ continue;
+
+ r = sd_bus_message_close_container(m);
+ if (r < 0)
+ return r;
+
+ } while (bus->nodes_modified);
+
+ return sd_bus_send(bus, m, NULL);
+}
+
+static int interfaces_added_append_one_prefix(
+ sd_bus *bus,
+ sd_bus_message *m,
+ const char *prefix,
+ const char *path,
+ const char *interface,
+ bool require_fallback) {
+
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ bool found_interface = false;
+ struct node_vtable *c;
+ struct node *n;
+ void *u = NULL;
+ int r;
+
+ assert(bus);
+ assert(m);
+ assert(prefix);
+ assert(path);
+ assert(interface);
+
+ n = hashmap_get(bus->nodes, prefix);
+ if (!n)
+ return 0;
+
+ LIST_FOREACH(vtables, c, n->vtables) {
+ if (require_fallback && !c->is_fallback)
+ continue;
+
+ if (!streq(c->interface, interface))
+ continue;
+
+ r = node_vtable_get_userdata(bus, path, c, &u, &error);
+ if (r < 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+ if (r == 0)
+ continue;
+
+ if (!found_interface) {
+ r = sd_bus_message_append_basic(m, 's', interface);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_open_container(m, 'a', "{sv}");
+ if (r < 0)
+ return r;
+
+ found_interface = true;
+ }
+
+ r = vtable_append_all_properties(bus, m, path, c, u, &error);
+ if (r < 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+ }
+
+ if (found_interface) {
+ r = sd_bus_message_close_container(m);
+ if (r < 0)
+ return r;
+ }
+
+ return found_interface;
+}
+
+static int interfaces_added_append_one(
+ sd_bus *bus,
+ sd_bus_message *m,
+ const char *path,
+ const char *interface) {
+
+ char *prefix;
+ int r;
+
+ assert(bus);
+ assert(m);
+ assert(path);
+ assert(interface);
+
+ r = interfaces_added_append_one_prefix(bus, m, path, path, interface, false);
+ if (r != 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+
+ prefix = alloca(strlen(path) + 1);
+ OBJECT_PATH_FOREACH_PREFIX(prefix, path) {
+ r = interfaces_added_append_one_prefix(bus, m, prefix, path, interface, true);
+ if (r != 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+ }
+
+ return -ENOENT;
+}
+
+_public_ int sd_bus_emit_interfaces_added_strv(sd_bus *bus, const char *path, char **interfaces) {
+ BUS_DONT_DESTROY(bus);
+
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+ struct node *object_manager;
+ char **i;
+ int r;
+
+ assert_return(bus, -EINVAL);
+ assert_return(object_path_is_valid(path), -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
+ if (strv_isempty(interfaces))
+ return 0;
+
+ r = bus_find_parent_object_manager(bus, &object_manager, path);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return -ESRCH;
+
+ do {
+ bus->nodes_modified = false;
+ m = sd_bus_message_unref(m);
+
+ r = sd_bus_message_new_signal(bus, &m, object_manager->path, "org.freedesktop.DBus.ObjectManager", "InterfacesAdded");
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append_basic(m, 'o', path);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_open_container(m, 'a', "{sa{sv}}");
+ if (r < 0)
+ return r;
+
+ STRV_FOREACH(i, interfaces) {
+ assert_return(interface_name_is_valid(*i), -EINVAL);
+
+ r = sd_bus_message_open_container(m, 'e', "sa{sv}");
+ if (r < 0)
+ return r;
+
+ r = interfaces_added_append_one(bus, m, path, *i);
+ if (r < 0)
+ return r;
+
+ if (bus->nodes_modified)
+ break;
+
+ r = sd_bus_message_close_container(m);
+ if (r < 0)
+ return r;
+ }
+
+ if (bus->nodes_modified)
+ continue;
+
+ r = sd_bus_message_close_container(m);
+ if (r < 0)
+ return r;
+
+ } while (bus->nodes_modified);
+
+ return sd_bus_send(bus, m, NULL);
+}
+
+_public_ int sd_bus_emit_interfaces_added(sd_bus *bus, const char *path, const char *interface, ...) {
+ char **interfaces;
+
+ assert_return(bus, -EINVAL);
+ assert_return(object_path_is_valid(path), -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
+ interfaces = strv_from_stdarg_alloca(interface);
+
+ return sd_bus_emit_interfaces_added_strv(bus, path, interfaces);
+}
+
+_public_ int sd_bus_emit_interfaces_removed_strv(sd_bus *bus, const char *path, char **interfaces) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+ struct node *object_manager;
+ int r;
+
+ assert_return(bus, -EINVAL);
+ assert_return(object_path_is_valid(path), -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
+ if (strv_isempty(interfaces))
+ return 0;
+
+ r = bus_find_parent_object_manager(bus, &object_manager, path);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return -ESRCH;
+
+ r = sd_bus_message_new_signal(bus, &m, object_manager->path, "org.freedesktop.DBus.ObjectManager", "InterfacesRemoved");
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append_basic(m, 'o', path);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append_strv(m, interfaces);
+ if (r < 0)
+ return r;
+
+ return sd_bus_send(bus, m, NULL);
+}
+
+_public_ int sd_bus_emit_interfaces_removed(sd_bus *bus, const char *path, const char *interface, ...) {
+ char **interfaces;
+
+ assert_return(bus, -EINVAL);
+ assert_return(object_path_is_valid(path), -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
+ interfaces = strv_from_stdarg_alloca(interface);
+
+ return sd_bus_emit_interfaces_removed_strv(bus, path, interfaces);
+}
+
+_public_ int sd_bus_add_object_manager(sd_bus *bus, sd_bus_slot **slot, const char *path) {
+ sd_bus_slot *s;
+ struct node *n;
+ int r;
+
+ assert_return(bus, -EINVAL);
+ assert_return(object_path_is_valid(path), -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ n = bus_node_allocate(bus, path);
+ if (!n)
+ return -ENOMEM;
+
+ s = bus_slot_allocate(bus, !slot, BUS_NODE_OBJECT_MANAGER, sizeof(struct node_object_manager), NULL);
+ if (!s) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ s->node_object_manager.node = n;
+ LIST_PREPEND(object_managers, n->object_managers, &s->node_object_manager);
+ bus->nodes_modified = true;
+
+ if (slot)
+ *slot = s;
+
+ return 0;
+
+fail:
+ sd_bus_slot_unref(s);
+ bus_node_gc(bus, n);
+
+ return r;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-objects.h b/src/libsystemd/libsystemd-internal/sd-bus/bus-objects.h
new file mode 100644
index 0000000000..e0b8c534ed
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-objects.h
@@ -0,0 +1,25 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "bus-internal.h"
+
+int bus_process_object(sd_bus *bus, sd_bus_message *m);
+void bus_node_gc(sd_bus *b, struct node *n);
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-protocol.h b/src/libsystemd/libsystemd-internal/sd-bus/bus-protocol.h
new file mode 100644
index 0000000000..9d180cb284
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-protocol.h
@@ -0,0 +1,180 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <endian.h>
+
+#include "macro.h"
+
+/* Packet header */
+
+struct _packed_ bus_header {
+ /* The first four fields are identical for dbus1, and dbus2 */
+ uint8_t endian;
+ uint8_t type;
+ uint8_t flags;
+ uint8_t version;
+
+ union _packed_ {
+ /* dbus1: Used for SOCK_STREAM connections */
+ struct _packed_ {
+ uint32_t body_size;
+
+ /* Note that what the bus spec calls "serial" we'll call
+ "cookie" instead, because we don't want to imply that the
+ cookie was in any way monotonically increasing. */
+ uint32_t serial;
+ uint32_t fields_size;
+ } dbus1;
+
+ /* dbus2: Used for kdbus connections */
+ struct _packed_ {
+ uint32_t _reserved;
+ uint64_t cookie;
+ } dbus2;
+
+ /* Note that both header versions have the same size! */
+ };
+};
+
+/* Endianness */
+
+enum {
+ _BUS_INVALID_ENDIAN = 0,
+ BUS_LITTLE_ENDIAN = 'l',
+ BUS_BIG_ENDIAN = 'B',
+#if __BYTE_ORDER == __BIG_ENDIAN
+ BUS_NATIVE_ENDIAN = BUS_BIG_ENDIAN,
+ BUS_REVERSE_ENDIAN = BUS_LITTLE_ENDIAN
+#else
+ BUS_NATIVE_ENDIAN = BUS_LITTLE_ENDIAN,
+ BUS_REVERSE_ENDIAN = BUS_BIG_ENDIAN
+#endif
+};
+
+/* Flags */
+
+enum {
+ BUS_MESSAGE_NO_REPLY_EXPECTED = 1,
+ BUS_MESSAGE_NO_AUTO_START = 2,
+ BUS_MESSAGE_ALLOW_INTERACTIVE_AUTHORIZATION = 4,
+};
+
+/* Header fields */
+
+enum {
+ _BUS_MESSAGE_HEADER_INVALID = 0,
+ BUS_MESSAGE_HEADER_PATH,
+ BUS_MESSAGE_HEADER_INTERFACE,
+ BUS_MESSAGE_HEADER_MEMBER,
+ BUS_MESSAGE_HEADER_ERROR_NAME,
+ BUS_MESSAGE_HEADER_REPLY_SERIAL,
+ BUS_MESSAGE_HEADER_DESTINATION,
+ BUS_MESSAGE_HEADER_SENDER,
+ BUS_MESSAGE_HEADER_SIGNATURE,
+ BUS_MESSAGE_HEADER_UNIX_FDS,
+ _BUS_MESSAGE_HEADER_MAX
+};
+
+/* RequestName parameters */
+
+enum {
+ BUS_NAME_ALLOW_REPLACEMENT = 1,
+ BUS_NAME_REPLACE_EXISTING = 2,
+ BUS_NAME_DO_NOT_QUEUE = 4
+};
+
+/* RequestName returns */
+enum {
+ BUS_NAME_PRIMARY_OWNER = 1,
+ BUS_NAME_IN_QUEUE = 2,
+ BUS_NAME_EXISTS = 3,
+ BUS_NAME_ALREADY_OWNER = 4
+};
+
+/* ReleaseName returns */
+enum {
+ BUS_NAME_RELEASED = 1,
+ BUS_NAME_NON_EXISTENT = 2,
+ BUS_NAME_NOT_OWNER = 3,
+};
+
+/* StartServiceByName returns */
+enum {
+ BUS_START_REPLY_SUCCESS = 1,
+ BUS_START_REPLY_ALREADY_RUNNING = 2,
+};
+
+#define BUS_INTROSPECT_DOCTYPE \
+ "<!DOCTYPE node PUBLIC \"-//freedesktop//DTD D-BUS Object Introspection 1.0//EN\"\n" \
+ "\"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd\">\n"
+
+#define BUS_INTROSPECT_INTERFACE_PEER \
+ " <interface name=\"org.freedesktop.DBus.Peer\">\n" \
+ " <method name=\"Ping\"/>\n" \
+ " <method name=\"GetMachineId\">\n" \
+ " <arg type=\"s\" name=\"machine_uuid\" direction=\"out\"/>\n" \
+ " </method>\n" \
+ " </interface>\n"
+
+#define BUS_INTROSPECT_INTERFACE_INTROSPECTABLE \
+ " <interface name=\"org.freedesktop.DBus.Introspectable\">\n" \
+ " <method name=\"Introspect\">\n" \
+ " <arg name=\"data\" type=\"s\" direction=\"out\"/>\n" \
+ " </method>\n" \
+ " </interface>\n"
+
+#define BUS_INTROSPECT_INTERFACE_PROPERTIES \
+ " <interface name=\"org.freedesktop.DBus.Properties\">\n" \
+ " <method name=\"Get\">\n" \
+ " <arg name=\"interface\" direction=\"in\" type=\"s\"/>\n" \
+ " <arg name=\"property\" direction=\"in\" type=\"s\"/>\n" \
+ " <arg name=\"value\" direction=\"out\" type=\"v\"/>\n" \
+ " </method>\n" \
+ " <method name=\"GetAll\">\n" \
+ " <arg name=\"interface\" direction=\"in\" type=\"s\"/>\n" \
+ " <arg name=\"properties\" direction=\"out\" type=\"a{sv}\"/>\n" \
+ " </method>\n" \
+ " <method name=\"Set\">\n" \
+ " <arg name=\"interface\" direction=\"in\" type=\"s\"/>\n" \
+ " <arg name=\"property\" direction=\"in\" type=\"s\"/>\n" \
+ " <arg name=\"value\" direction=\"in\" type=\"v\"/>\n" \
+ " </method>\n" \
+ " <signal name=\"PropertiesChanged\">\n" \
+ " <arg type=\"s\" name=\"interface\"/>\n" \
+ " <arg type=\"a{sv}\" name=\"changed_properties\"/>\n" \
+ " <arg type=\"as\" name=\"invalidated_properties\"/>\n" \
+ " </signal>\n" \
+ " </interface>\n"
+
+#define BUS_INTROSPECT_INTERFACE_OBJECT_MANAGER \
+ " <interface name=\"org.freedesktop.DBus.ObjectManager\">\n" \
+ " <method name=\"GetManagedObjects\">\n" \
+ " <arg type=\"a{oa{sa{sv}}}\" name=\"object_paths_interfaces_and_properties\" direction=\"out\"/>\n" \
+ " </method>\n" \
+ " <signal name=\"InterfacesAdded\">\n" \
+ " <arg type=\"o\" name=\"object_path\"/>\n" \
+ " <arg type=\"a{sa{sv}}\" name=\"interfaces_and_properties\"/>\n" \
+ " </signal>\n" \
+ " <signal name=\"InterfacesRemoved\">\n" \
+ " <arg type=\"o\" name=\"object_path\"/>\n" \
+ " <arg type=\"as\" name=\"interfaces\"/>\n" \
+ " </signal>\n" \
+ " </interface>\n"
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-signature.c b/src/libsystemd/libsystemd-internal/sd-bus/bus-signature.c
new file mode 100644
index 0000000000..7bc243494a
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-signature.c
@@ -0,0 +1,158 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <util.h>
+
+#include "bus-signature.h"
+#include "bus-type.h"
+
+static int signature_element_length_internal(
+ const char *s,
+ bool allow_dict_entry,
+ unsigned array_depth,
+ unsigned struct_depth,
+ size_t *l) {
+
+ int r;
+
+ if (!s)
+ return -EINVAL;
+
+ assert(l);
+
+ if (bus_type_is_basic(*s) || *s == SD_BUS_TYPE_VARIANT) {
+ *l = 1;
+ return 0;
+ }
+
+ if (*s == SD_BUS_TYPE_ARRAY) {
+ size_t t;
+
+ if (array_depth >= 32)
+ return -EINVAL;
+
+ r = signature_element_length_internal(s + 1, true, array_depth+1, struct_depth, &t);
+ if (r < 0)
+ return r;
+
+ *l = t + 1;
+ return 0;
+ }
+
+ if (*s == SD_BUS_TYPE_STRUCT_BEGIN) {
+ const char *p = s + 1;
+
+ if (struct_depth >= 32)
+ return -EINVAL;
+
+ while (*p != SD_BUS_TYPE_STRUCT_END) {
+ size_t t;
+
+ r = signature_element_length_internal(p, false, array_depth, struct_depth+1, &t);
+ if (r < 0)
+ return r;
+
+ p += t;
+ }
+
+ *l = p - s + 1;
+ return 0;
+ }
+
+ if (*s == SD_BUS_TYPE_DICT_ENTRY_BEGIN && allow_dict_entry) {
+ const char *p = s + 1;
+ unsigned n = 0;
+
+ if (struct_depth >= 32)
+ return -EINVAL;
+
+ while (*p != SD_BUS_TYPE_DICT_ENTRY_END) {
+ size_t t;
+
+ if (n == 0 && !bus_type_is_basic(*p))
+ return -EINVAL;
+
+ r = signature_element_length_internal(p, false, array_depth, struct_depth+1, &t);
+ if (r < 0)
+ return r;
+
+ p += t;
+ n++;
+ }
+
+ if (n != 2)
+ return -EINVAL;
+
+ *l = p - s + 1;
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+
+int signature_element_length(const char *s, size_t *l) {
+ return signature_element_length_internal(s, true, 0, 0, l);
+}
+
+bool signature_is_single(const char *s, bool allow_dict_entry) {
+ int r;
+ size_t t;
+
+ if (!s)
+ return false;
+
+ r = signature_element_length_internal(s, allow_dict_entry, 0, 0, &t);
+ if (r < 0)
+ return false;
+
+ return s[t] == 0;
+}
+
+bool signature_is_pair(const char *s) {
+
+ if (!s)
+ return false;
+
+ if (!bus_type_is_basic(*s))
+ return false;
+
+ return signature_is_single(s + 1, false);
+}
+
+bool signature_is_valid(const char *s, bool allow_dict_entry) {
+ const char *p;
+ int r;
+
+ if (!s)
+ return false;
+
+ p = s;
+ while (*p) {
+ size_t t;
+
+ r = signature_element_length_internal(p, allow_dict_entry, 0, 0, &t);
+ if (r < 0)
+ return false;
+
+ p += t;
+ }
+
+ return p - s <= 255;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-signature.h b/src/libsystemd/libsystemd-internal/sd-bus/bus-signature.h
new file mode 100644
index 0000000000..1e0cd7f587
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-signature.h
@@ -0,0 +1,28 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <stdbool.h>
+
+bool signature_is_single(const char *s, bool allow_dict_entry);
+bool signature_is_pair(const char *s);
+bool signature_is_valid(const char *s, bool allow_dict_entry);
+
+int signature_element_length(const char *s, size_t *l);
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-slot.c b/src/libsystemd/libsystemd-internal/sd-bus/bus-slot.c
new file mode 100644
index 0000000000..75c1692bf5
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-slot.c
@@ -0,0 +1,286 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <systemd/sd-bus.h>
+
+#include "alloc-util.h"
+#include "bus-control.h"
+#include "bus-objects.h"
+#include "bus-slot.h"
+#include "string-util.h"
+
+sd_bus_slot *bus_slot_allocate(
+ sd_bus *bus,
+ bool floating,
+ BusSlotType type,
+ size_t extra,
+ void *userdata) {
+
+ sd_bus_slot *slot;
+
+ assert(bus);
+
+ slot = malloc0(offsetof(sd_bus_slot, reply_callback) + extra);
+ if (!slot)
+ return NULL;
+
+ slot->n_ref = 1;
+ slot->type = type;
+ slot->bus = bus;
+ slot->floating = floating;
+ slot->userdata = userdata;
+
+ if (!floating)
+ sd_bus_ref(bus);
+
+ LIST_PREPEND(slots, bus->slots, slot);
+
+ return slot;
+}
+
+_public_ sd_bus_slot* sd_bus_slot_ref(sd_bus_slot *slot) {
+
+ if (!slot)
+ return NULL;
+
+ assert(slot->n_ref > 0);
+
+ slot->n_ref++;
+ return slot;
+}
+
+void bus_slot_disconnect(sd_bus_slot *slot) {
+ sd_bus *bus;
+
+ assert(slot);
+
+ if (!slot->bus)
+ return;
+
+ switch (slot->type) {
+
+ case BUS_REPLY_CALLBACK:
+
+ if (slot->reply_callback.cookie != 0)
+ ordered_hashmap_remove(slot->bus->reply_callbacks, &slot->reply_callback.cookie);
+
+ if (slot->reply_callback.timeout != 0)
+ prioq_remove(slot->bus->reply_callbacks_prioq, &slot->reply_callback, &slot->reply_callback.prioq_idx);
+
+ break;
+
+ case BUS_FILTER_CALLBACK:
+ slot->bus->filter_callbacks_modified = true;
+ LIST_REMOVE(callbacks, slot->bus->filter_callbacks, &slot->filter_callback);
+ break;
+
+ case BUS_MATCH_CALLBACK:
+
+ if (slot->match_added)
+ bus_remove_match_internal(slot->bus, slot->match_callback.match_string, slot->match_callback.cookie);
+
+ slot->bus->match_callbacks_modified = true;
+ bus_match_remove(&slot->bus->match_callbacks, &slot->match_callback);
+
+ free(slot->match_callback.match_string);
+
+ break;
+
+ case BUS_NODE_CALLBACK:
+
+ if (slot->node_callback.node) {
+ LIST_REMOVE(callbacks, slot->node_callback.node->callbacks, &slot->node_callback);
+ slot->bus->nodes_modified = true;
+
+ bus_node_gc(slot->bus, slot->node_callback.node);
+ }
+
+ break;
+
+ case BUS_NODE_ENUMERATOR:
+
+ if (slot->node_enumerator.node) {
+ LIST_REMOVE(enumerators, slot->node_enumerator.node->enumerators, &slot->node_enumerator);
+ slot->bus->nodes_modified = true;
+
+ bus_node_gc(slot->bus, slot->node_enumerator.node);
+ }
+
+ break;
+
+ case BUS_NODE_OBJECT_MANAGER:
+
+ if (slot->node_object_manager.node) {
+ LIST_REMOVE(object_managers, slot->node_object_manager.node->object_managers, &slot->node_object_manager);
+ slot->bus->nodes_modified = true;
+
+ bus_node_gc(slot->bus, slot->node_object_manager.node);
+ }
+
+ break;
+
+ case BUS_NODE_VTABLE:
+
+ if (slot->node_vtable.node && slot->node_vtable.interface && slot->node_vtable.vtable) {
+ const sd_bus_vtable *v;
+
+ for (v = slot->node_vtable.vtable; v->type != _SD_BUS_VTABLE_END; v++) {
+ struct vtable_member *x = NULL;
+
+ switch (v->type) {
+
+ case _SD_BUS_VTABLE_METHOD: {
+ struct vtable_member key;
+
+ key.path = slot->node_vtable.node->path;
+ key.interface = slot->node_vtable.interface;
+ key.member = v->x.method.member;
+
+ x = hashmap_remove(slot->bus->vtable_methods, &key);
+ break;
+ }
+
+ case _SD_BUS_VTABLE_PROPERTY:
+ case _SD_BUS_VTABLE_WRITABLE_PROPERTY: {
+ struct vtable_member key;
+
+ key.path = slot->node_vtable.node->path;
+ key.interface = slot->node_vtable.interface;
+ key.member = v->x.method.member;
+
+
+ x = hashmap_remove(slot->bus->vtable_properties, &key);
+ break;
+ }}
+
+ free(x);
+ }
+ }
+
+ free(slot->node_vtable.interface);
+
+ if (slot->node_vtable.node) {
+ LIST_REMOVE(vtables, slot->node_vtable.node->vtables, &slot->node_vtable);
+ slot->bus->nodes_modified = true;
+
+ bus_node_gc(slot->bus, slot->node_vtable.node);
+ }
+
+ break;
+
+ default:
+ assert_not_reached("Wut? Unknown slot type?");
+ }
+
+ bus = slot->bus;
+
+ slot->type = _BUS_SLOT_INVALID;
+ slot->bus = NULL;
+ LIST_REMOVE(slots, bus->slots, slot);
+
+ if (!slot->floating)
+ sd_bus_unref(bus);
+}
+
+_public_ sd_bus_slot* sd_bus_slot_unref(sd_bus_slot *slot) {
+
+ if (!slot)
+ return NULL;
+
+ assert(slot->n_ref > 0);
+
+ if (slot->n_ref > 1) {
+ slot->n_ref--;
+ return NULL;
+ }
+
+ bus_slot_disconnect(slot);
+ free(slot->description);
+ free(slot);
+
+ return NULL;
+}
+
+_public_ sd_bus* sd_bus_slot_get_bus(sd_bus_slot *slot) {
+ assert_return(slot, NULL);
+
+ return slot->bus;
+}
+
+_public_ void *sd_bus_slot_get_userdata(sd_bus_slot *slot) {
+ assert_return(slot, NULL);
+
+ return slot->userdata;
+}
+
+_public_ void *sd_bus_slot_set_userdata(sd_bus_slot *slot, void *userdata) {
+ void *ret;
+
+ assert_return(slot, NULL);
+
+ ret = slot->userdata;
+ slot->userdata = userdata;
+
+ return ret;
+}
+
+_public_ sd_bus_message *sd_bus_slot_get_current_message(sd_bus_slot *slot) {
+ assert_return(slot, NULL);
+ assert_return(slot->type >= 0, NULL);
+
+ if (slot->bus->current_slot != slot)
+ return NULL;
+
+ return slot->bus->current_message;
+}
+
+_public_ sd_bus_message_handler_t sd_bus_slot_get_current_handler(sd_bus_slot *slot) {
+ assert_return(slot, NULL);
+ assert_return(slot->type >= 0, NULL);
+
+ if (slot->bus->current_slot != slot)
+ return NULL;
+
+ return slot->bus->current_handler;
+}
+
+_public_ void* sd_bus_slot_get_current_userdata(sd_bus_slot *slot) {
+ assert_return(slot, NULL);
+ assert_return(slot->type >= 0, NULL);
+
+ if (slot->bus->current_slot != slot)
+ return NULL;
+
+ return slot->bus->current_userdata;
+}
+
+_public_ int sd_bus_slot_set_description(sd_bus_slot *slot, const char *description) {
+ assert_return(slot, -EINVAL);
+
+ return free_and_strdup(&slot->description, description);
+}
+
+_public_ int sd_bus_slot_get_description(sd_bus_slot *slot, const char **description) {
+ assert_return(slot, -EINVAL);
+ assert_return(description, -EINVAL);
+ assert_return(slot->description, -ENXIO);
+
+ *description = slot->description;
+ return 0;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-slot.h b/src/libsystemd/libsystemd-internal/sd-bus/bus-slot.h
new file mode 100644
index 0000000000..b862799d1c
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-slot.h
@@ -0,0 +1,28 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2014 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <systemd/sd-bus.h>
+
+#include "bus-internal.h"
+
+sd_bus_slot *bus_slot_allocate(sd_bus *bus, bool floating, BusSlotType type, size_t extra, void *userdata);
+
+void bus_slot_disconnect(sd_bus_slot *slot);
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-socket.c b/src/libsystemd/libsystemd-internal/sd-bus/bus-socket.c
new file mode 100644
index 0000000000..1486d7cd55
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-socket.c
@@ -0,0 +1,1064 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <endian.h>
+#include <poll.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <systemd/sd-bus.h>
+#include <systemd/sd-daemon.h>
+
+#include "alloc-util.h"
+#include "bus-internal.h"
+#include "bus-message.h"
+#include "bus-socket.h"
+#include "fd-util.h"
+#include "formats-util.h"
+#include "hexdecoct.h"
+#include "macro.h"
+#include "missing.h"
+#include "selinux-util.h"
+#include "signal-util.h"
+#include "stdio-util.h"
+#include "string-util.h"
+#include "user-util.h"
+#include "utf8.h"
+#include "util.h"
+
+#define SNDBUF_SIZE (8*1024*1024)
+
+static void iovec_advance(struct iovec iov[], unsigned *idx, size_t size) {
+
+ while (size > 0) {
+ struct iovec *i = iov + *idx;
+
+ if (i->iov_len > size) {
+ i->iov_base = (uint8_t*) i->iov_base + size;
+ i->iov_len -= size;
+ return;
+ }
+
+ size -= i->iov_len;
+
+ i->iov_base = NULL;
+ i->iov_len = 0;
+
+ (*idx)++;
+ }
+}
+
+static int append_iovec(sd_bus_message *m, const void *p, size_t sz) {
+ assert(m);
+ assert(p);
+ assert(sz > 0);
+
+ m->iovec[m->n_iovec].iov_base = (void*) p;
+ m->iovec[m->n_iovec].iov_len = sz;
+ m->n_iovec++;
+
+ return 0;
+}
+
+static int bus_message_setup_iovec(sd_bus_message *m) {
+ struct bus_body_part *part;
+ unsigned n, i;
+ int r;
+
+ assert(m);
+ assert(m->sealed);
+
+ if (m->n_iovec > 0)
+ return 0;
+
+ assert(!m->iovec);
+
+ n = 1 + m->n_body_parts;
+ if (n < ELEMENTSOF(m->iovec_fixed))
+ m->iovec = m->iovec_fixed;
+ else {
+ m->iovec = new(struct iovec, n);
+ if (!m->iovec) {
+ r = -ENOMEM;
+ goto fail;
+ }
+ }
+
+ r = append_iovec(m, m->header, BUS_MESSAGE_BODY_BEGIN(m));
+ if (r < 0)
+ goto fail;
+
+ MESSAGE_FOREACH_PART(part, i, m) {
+ r = bus_body_part_map(part);
+ if (r < 0)
+ goto fail;
+
+ r = append_iovec(m, part->data, part->size);
+ if (r < 0)
+ goto fail;
+ }
+
+ assert(n == m->n_iovec);
+
+ return 0;
+
+fail:
+ m->poisoned = true;
+ return r;
+}
+
+bool bus_socket_auth_needs_write(sd_bus *b) {
+
+ unsigned i;
+
+ if (b->auth_index >= ELEMENTSOF(b->auth_iovec))
+ return false;
+
+ for (i = b->auth_index; i < ELEMENTSOF(b->auth_iovec); i++) {
+ struct iovec *j = b->auth_iovec + i;
+
+ if (j->iov_len > 0)
+ return true;
+ }
+
+ return false;
+}
+
+static int bus_socket_write_auth(sd_bus *b) {
+ ssize_t k;
+
+ assert(b);
+ assert(b->state == BUS_AUTHENTICATING);
+
+ if (!bus_socket_auth_needs_write(b))
+ return 0;
+
+ if (b->prefer_writev)
+ k = writev(b->output_fd, b->auth_iovec + b->auth_index, ELEMENTSOF(b->auth_iovec) - b->auth_index);
+ else {
+ struct msghdr mh;
+ zero(mh);
+
+ mh.msg_iov = b->auth_iovec + b->auth_index;
+ mh.msg_iovlen = ELEMENTSOF(b->auth_iovec) - b->auth_index;
+
+ k = sendmsg(b->output_fd, &mh, MSG_DONTWAIT|MSG_NOSIGNAL);
+ if (k < 0 && errno == ENOTSOCK) {
+ b->prefer_writev = true;
+ k = writev(b->output_fd, b->auth_iovec + b->auth_index, ELEMENTSOF(b->auth_iovec) - b->auth_index);
+ }
+ }
+
+ if (k < 0)
+ return errno == EAGAIN ? 0 : -errno;
+
+ iovec_advance(b->auth_iovec, &b->auth_index, (size_t) k);
+ return 1;
+}
+
+static int bus_socket_auth_verify_client(sd_bus *b) {
+ char *e, *f, *start;
+ sd_id128_t peer;
+ unsigned i;
+ int r;
+
+ assert(b);
+
+ /* We expect two response lines: "OK" and possibly
+ * "AGREE_UNIX_FD" */
+
+ e = memmem_safe(b->rbuffer, b->rbuffer_size, "\r\n", 2);
+ if (!e)
+ return 0;
+
+ if (b->hello_flags & KDBUS_HELLO_ACCEPT_FD) {
+ f = memmem(e + 2, b->rbuffer_size - (e - (char*) b->rbuffer) - 2, "\r\n", 2);
+ if (!f)
+ return 0;
+
+ start = f + 2;
+ } else {
+ f = NULL;
+ start = e + 2;
+ }
+
+ /* Nice! We got all the lines we need. First check the OK
+ * line */
+
+ if (e - (char*) b->rbuffer != 3 + 32)
+ return -EPERM;
+
+ if (memcmp(b->rbuffer, "OK ", 3))
+ return -EPERM;
+
+ b->auth = b->anonymous_auth ? BUS_AUTH_ANONYMOUS : BUS_AUTH_EXTERNAL;
+
+ for (i = 0; i < 32; i += 2) {
+ int x, y;
+
+ x = unhexchar(((char*) b->rbuffer)[3 + i]);
+ y = unhexchar(((char*) b->rbuffer)[3 + i + 1]);
+
+ if (x < 0 || y < 0)
+ return -EINVAL;
+
+ peer.bytes[i/2] = ((uint8_t) x << 4 | (uint8_t) y);
+ }
+
+ if (!sd_id128_equal(b->server_id, SD_ID128_NULL) &&
+ !sd_id128_equal(b->server_id, peer))
+ return -EPERM;
+
+ b->server_id = peer;
+
+ /* And possibly check the second line, too */
+
+ if (f)
+ b->can_fds =
+ (f - e == strlen("\r\nAGREE_UNIX_FD")) &&
+ memcmp(e + 2, "AGREE_UNIX_FD", strlen("AGREE_UNIX_FD")) == 0;
+
+ b->rbuffer_size -= (start - (char*) b->rbuffer);
+ memmove(b->rbuffer, start, b->rbuffer_size);
+
+ r = bus_start_running(b);
+ if (r < 0)
+ return r;
+
+ return 1;
+}
+
+static bool line_equals(const char *s, size_t m, const char *line) {
+ size_t l;
+
+ l = strlen(line);
+ if (l != m)
+ return false;
+
+ return memcmp(s, line, l) == 0;
+}
+
+static bool line_begins(const char *s, size_t m, const char *word) {
+ size_t l;
+
+ l = strlen(word);
+ if (m < l)
+ return false;
+
+ if (memcmp(s, word, l) != 0)
+ return false;
+
+ return m == l || (m > l && s[l] == ' ');
+}
+
+static int verify_anonymous_token(sd_bus *b, const char *p, size_t l) {
+ _cleanup_free_ char *token = NULL;
+ size_t len;
+ int r;
+
+ if (!b->anonymous_auth)
+ return 0;
+
+ if (l <= 0)
+ return 1;
+
+ assert(p[0] == ' ');
+ p++; l--;
+
+ if (l % 2 != 0)
+ return 0;
+
+ r = unhexmem(p, l, (void **) &token, &len);
+ if (r < 0)
+ return 0;
+
+ if (memchr(token, 0, len))
+ return 0;
+
+ return !!utf8_is_valid(token);
+}
+
+static int verify_external_token(sd_bus *b, const char *p, size_t l) {
+ _cleanup_free_ char *token = NULL;
+ size_t len;
+ uid_t u;
+ int r;
+
+ /* We don't do any real authentication here. Instead, we if
+ * the owner of this bus wanted authentication he should have
+ * checked SO_PEERCRED before even creating the bus object. */
+
+ if (!b->anonymous_auth && !b->ucred_valid)
+ return 0;
+
+ if (l <= 0)
+ return 1;
+
+ assert(p[0] == ' ');
+ p++; l--;
+
+ if (l % 2 != 0)
+ return 0;
+
+ r = unhexmem(p, l, (void**) &token, &len);
+ if (r < 0)
+ return 0;
+
+ if (memchr(token, 0, len))
+ return 0;
+
+ r = parse_uid(token, &u);
+ if (r < 0)
+ return 0;
+
+ /* We ignore the passed value if anonymous authentication is
+ * on anyway. */
+ if (!b->anonymous_auth && u != b->ucred.uid)
+ return 0;
+
+ return 1;
+}
+
+static int bus_socket_auth_write(sd_bus *b, const char *t) {
+ char *p;
+ size_t l;
+
+ assert(b);
+ assert(t);
+
+ /* We only make use of the first iovec */
+ assert(b->auth_index == 0 || b->auth_index == 1);
+
+ l = strlen(t);
+ p = malloc(b->auth_iovec[0].iov_len + l);
+ if (!p)
+ return -ENOMEM;
+
+ memcpy_safe(p, b->auth_iovec[0].iov_base, b->auth_iovec[0].iov_len);
+ memcpy(p + b->auth_iovec[0].iov_len, t, l);
+
+ b->auth_iovec[0].iov_base = p;
+ b->auth_iovec[0].iov_len += l;
+
+ free(b->auth_buffer);
+ b->auth_buffer = p;
+ b->auth_index = 0;
+ return 0;
+}
+
+static int bus_socket_auth_write_ok(sd_bus *b) {
+ char t[3 + 32 + 2 + 1];
+
+ assert(b);
+
+ xsprintf(t, "OK " SD_ID128_FORMAT_STR "\r\n", SD_ID128_FORMAT_VAL(b->server_id));
+
+ return bus_socket_auth_write(b, t);
+}
+
+static int bus_socket_auth_verify_server(sd_bus *b) {
+ char *e;
+ const char *line;
+ size_t l;
+ bool processed = false;
+ int r;
+
+ assert(b);
+
+ if (b->rbuffer_size < 1)
+ return 0;
+
+ /* First char must be a NUL byte */
+ if (*(char*) b->rbuffer != 0)
+ return -EIO;
+
+ if (b->rbuffer_size < 3)
+ return 0;
+
+ /* Begin with the first line */
+ if (b->auth_rbegin <= 0)
+ b->auth_rbegin = 1;
+
+ for (;;) {
+ /* Check if line is complete */
+ line = (char*) b->rbuffer + b->auth_rbegin;
+ e = memmem(line, b->rbuffer_size - b->auth_rbegin, "\r\n", 2);
+ if (!e)
+ return processed;
+
+ l = e - line;
+
+ if (line_begins(line, l, "AUTH ANONYMOUS")) {
+
+ r = verify_anonymous_token(b, line + 14, l - 14);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ r = bus_socket_auth_write(b, "REJECTED\r\n");
+ else {
+ b->auth = BUS_AUTH_ANONYMOUS;
+ r = bus_socket_auth_write_ok(b);
+ }
+
+ } else if (line_begins(line, l, "AUTH EXTERNAL")) {
+
+ r = verify_external_token(b, line + 13, l - 13);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ r = bus_socket_auth_write(b, "REJECTED\r\n");
+ else {
+ b->auth = BUS_AUTH_EXTERNAL;
+ r = bus_socket_auth_write_ok(b);
+ }
+
+ } else if (line_begins(line, l, "AUTH"))
+ r = bus_socket_auth_write(b, "REJECTED EXTERNAL ANONYMOUS\r\n");
+ else if (line_equals(line, l, "CANCEL") ||
+ line_begins(line, l, "ERROR")) {
+
+ b->auth = _BUS_AUTH_INVALID;
+ r = bus_socket_auth_write(b, "REJECTED\r\n");
+
+ } else if (line_equals(line, l, "BEGIN")) {
+
+ if (b->auth == _BUS_AUTH_INVALID)
+ r = bus_socket_auth_write(b, "ERROR\r\n");
+ else {
+ /* We can't leave from the auth phase
+ * before we haven't written
+ * everything queued, so let's check
+ * that */
+
+ if (bus_socket_auth_needs_write(b))
+ return 1;
+
+ b->rbuffer_size -= (e + 2 - (char*) b->rbuffer);
+ memmove(b->rbuffer, e + 2, b->rbuffer_size);
+ return bus_start_running(b);
+ }
+
+ } else if (line_begins(line, l, "DATA")) {
+
+ if (b->auth == _BUS_AUTH_INVALID)
+ r = bus_socket_auth_write(b, "ERROR\r\n");
+ else {
+ if (b->auth == BUS_AUTH_ANONYMOUS)
+ r = verify_anonymous_token(b, line + 4, l - 4);
+ else
+ r = verify_external_token(b, line + 4, l - 4);
+
+ if (r < 0)
+ return r;
+ if (r == 0) {
+ b->auth = _BUS_AUTH_INVALID;
+ r = bus_socket_auth_write(b, "REJECTED\r\n");
+ } else
+ r = bus_socket_auth_write_ok(b);
+ }
+ } else if (line_equals(line, l, "NEGOTIATE_UNIX_FD")) {
+ if (b->auth == _BUS_AUTH_INVALID || !(b->hello_flags & KDBUS_HELLO_ACCEPT_FD))
+ r = bus_socket_auth_write(b, "ERROR\r\n");
+ else {
+ b->can_fds = true;
+ r = bus_socket_auth_write(b, "AGREE_UNIX_FD\r\n");
+ }
+ } else
+ r = bus_socket_auth_write(b, "ERROR\r\n");
+
+ if (r < 0)
+ return r;
+
+ b->auth_rbegin = e + 2 - (char*) b->rbuffer;
+
+ processed = true;
+ }
+}
+
+static int bus_socket_auth_verify(sd_bus *b) {
+ assert(b);
+
+ if (b->is_server)
+ return bus_socket_auth_verify_server(b);
+ else
+ return bus_socket_auth_verify_client(b);
+}
+
+static int bus_socket_read_auth(sd_bus *b) {
+ struct msghdr mh;
+ struct iovec iov = {};
+ size_t n;
+ ssize_t k;
+ int r;
+ void *p;
+ union {
+ struct cmsghdr cmsghdr;
+ uint8_t buf[CMSG_SPACE(sizeof(int) * BUS_FDS_MAX)];
+ } control;
+ bool handle_cmsg = false;
+
+ assert(b);
+ assert(b->state == BUS_AUTHENTICATING);
+
+ r = bus_socket_auth_verify(b);
+ if (r != 0)
+ return r;
+
+ n = MAX(256u, b->rbuffer_size * 2);
+
+ if (n > BUS_AUTH_SIZE_MAX)
+ n = BUS_AUTH_SIZE_MAX;
+
+ if (b->rbuffer_size >= n)
+ return -ENOBUFS;
+
+ p = realloc(b->rbuffer, n);
+ if (!p)
+ return -ENOMEM;
+
+ b->rbuffer = p;
+
+ iov.iov_base = (uint8_t*) b->rbuffer + b->rbuffer_size;
+ iov.iov_len = n - b->rbuffer_size;
+
+ if (b->prefer_readv)
+ k = readv(b->input_fd, &iov, 1);
+ else {
+ zero(mh);
+ mh.msg_iov = &iov;
+ mh.msg_iovlen = 1;
+ mh.msg_control = &control;
+ mh.msg_controllen = sizeof(control);
+
+ k = recvmsg(b->input_fd, &mh, MSG_DONTWAIT|MSG_NOSIGNAL|MSG_CMSG_CLOEXEC);
+ if (k < 0 && errno == ENOTSOCK) {
+ b->prefer_readv = true;
+ k = readv(b->input_fd, &iov, 1);
+ } else
+ handle_cmsg = true;
+ }
+ if (k < 0)
+ return errno == EAGAIN ? 0 : -errno;
+ if (k == 0)
+ return -ECONNRESET;
+
+ b->rbuffer_size += k;
+
+ if (handle_cmsg) {
+ struct cmsghdr *cmsg;
+
+ CMSG_FOREACH(cmsg, &mh)
+ if (cmsg->cmsg_level == SOL_SOCKET &&
+ cmsg->cmsg_type == SCM_RIGHTS) {
+ int j;
+
+ /* Whut? We received fds during the auth
+ * protocol? Somebody is playing games with
+ * us. Close them all, and fail */
+ j = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int);
+ close_many((int*) CMSG_DATA(cmsg), j);
+ return -EIO;
+ } else
+ log_debug("Got unexpected auxiliary data with level=%d and type=%d",
+ cmsg->cmsg_level, cmsg->cmsg_type);
+ }
+
+ r = bus_socket_auth_verify(b);
+ if (r != 0)
+ return r;
+
+ return 1;
+}
+
+void bus_socket_setup(sd_bus *b) {
+ assert(b);
+
+ /* Increase the buffers to 8 MB */
+ fd_inc_rcvbuf(b->input_fd, SNDBUF_SIZE);
+ fd_inc_sndbuf(b->output_fd, SNDBUF_SIZE);
+
+ b->is_kernel = false;
+ b->message_version = 1;
+ b->message_endian = 0;
+}
+
+static void bus_get_peercred(sd_bus *b) {
+ int r;
+
+ assert(b);
+
+ /* Get the peer for socketpair() sockets */
+ b->ucred_valid = getpeercred(b->input_fd, &b->ucred) >= 0;
+
+ /* Get the SELinux context of the peer */
+ if (mac_selinux_have()) {
+ r = getpeersec(b->input_fd, &b->label);
+ if (r < 0 && r != -EOPNOTSUPP)
+ log_debug_errno(r, "Failed to determine peer security context: %m");
+ }
+}
+
+static int bus_socket_start_auth_client(sd_bus *b) {
+ size_t l;
+ const char *auth_suffix, *auth_prefix;
+
+ assert(b);
+
+ if (b->anonymous_auth) {
+ auth_prefix = "\0AUTH ANONYMOUS ";
+
+ /* For ANONYMOUS auth we send some arbitrary "trace" string */
+ l = 9;
+ b->auth_buffer = hexmem("anonymous", l);
+ } else {
+ char text[DECIMAL_STR_MAX(uid_t) + 1];
+
+ auth_prefix = "\0AUTH EXTERNAL ";
+
+ xsprintf(text, UID_FMT, geteuid());
+
+ l = strlen(text);
+ b->auth_buffer = hexmem(text, l);
+ }
+
+ if (!b->auth_buffer)
+ return -ENOMEM;
+
+ if (b->hello_flags & KDBUS_HELLO_ACCEPT_FD)
+ auth_suffix = "\r\nNEGOTIATE_UNIX_FD\r\nBEGIN\r\n";
+ else
+ auth_suffix = "\r\nBEGIN\r\n";
+
+ b->auth_iovec[0].iov_base = (void*) auth_prefix;
+ b->auth_iovec[0].iov_len = 1 + strlen(auth_prefix + 1);
+ b->auth_iovec[1].iov_base = (void*) b->auth_buffer;
+ b->auth_iovec[1].iov_len = l * 2;
+ b->auth_iovec[2].iov_base = (void*) auth_suffix;
+ b->auth_iovec[2].iov_len = strlen(auth_suffix);
+
+ return bus_socket_write_auth(b);
+}
+
+int bus_socket_start_auth(sd_bus *b) {
+ assert(b);
+
+ bus_get_peercred(b);
+
+ b->state = BUS_AUTHENTICATING;
+ b->auth_timeout = now(CLOCK_MONOTONIC) + BUS_DEFAULT_TIMEOUT;
+
+ if (sd_is_socket(b->input_fd, AF_UNIX, 0, 0) <= 0)
+ b->hello_flags &= ~KDBUS_HELLO_ACCEPT_FD;
+
+ if (b->output_fd != b->input_fd)
+ if (sd_is_socket(b->output_fd, AF_UNIX, 0, 0) <= 0)
+ b->hello_flags &= ~KDBUS_HELLO_ACCEPT_FD;
+
+ if (b->is_server)
+ return bus_socket_read_auth(b);
+ else
+ return bus_socket_start_auth_client(b);
+}
+
+int bus_socket_connect(sd_bus *b) {
+ int r;
+
+ assert(b);
+ assert(b->input_fd < 0);
+ assert(b->output_fd < 0);
+ assert(b->sockaddr.sa.sa_family != AF_UNSPEC);
+
+ b->input_fd = socket(b->sockaddr.sa.sa_family, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
+ if (b->input_fd < 0)
+ return -errno;
+
+ b->output_fd = b->input_fd;
+
+ bus_socket_setup(b);
+
+ r = connect(b->input_fd, &b->sockaddr.sa, b->sockaddr_size);
+ if (r < 0) {
+ if (errno == EINPROGRESS)
+ return 1;
+
+ return -errno;
+ }
+
+ return bus_socket_start_auth(b);
+}
+
+int bus_socket_exec(sd_bus *b) {
+ int s[2], r;
+ pid_t pid;
+
+ assert(b);
+ assert(b->input_fd < 0);
+ assert(b->output_fd < 0);
+ assert(b->exec_path);
+
+ r = socketpair(AF_UNIX, SOCK_STREAM|SOCK_NONBLOCK|SOCK_CLOEXEC, 0, s);
+ if (r < 0)
+ return -errno;
+
+ pid = fork();
+ if (pid < 0) {
+ safe_close_pair(s);
+ return -errno;
+ }
+ if (pid == 0) {
+ /* Child */
+
+ (void) reset_all_signal_handlers();
+ (void) reset_signal_mask();
+
+ close_all_fds(s+1, 1);
+
+ assert_se(dup3(s[1], STDIN_FILENO, 0) == STDIN_FILENO);
+ assert_se(dup3(s[1], STDOUT_FILENO, 0) == STDOUT_FILENO);
+
+ if (s[1] != STDIN_FILENO && s[1] != STDOUT_FILENO)
+ safe_close(s[1]);
+
+ fd_cloexec(STDIN_FILENO, false);
+ fd_cloexec(STDOUT_FILENO, false);
+ fd_nonblock(STDIN_FILENO, false);
+ fd_nonblock(STDOUT_FILENO, false);
+
+ if (b->exec_argv)
+ execvp(b->exec_path, b->exec_argv);
+ else {
+ const char *argv[] = { b->exec_path, NULL };
+ execvp(b->exec_path, (char**) argv);
+ }
+
+ _exit(EXIT_FAILURE);
+ }
+
+ safe_close(s[1]);
+ b->output_fd = b->input_fd = s[0];
+
+ bus_socket_setup(b);
+
+ return bus_socket_start_auth(b);
+}
+
+int bus_socket_take_fd(sd_bus *b) {
+ assert(b);
+
+ bus_socket_setup(b);
+
+ return bus_socket_start_auth(b);
+}
+
+int bus_socket_write_message(sd_bus *bus, sd_bus_message *m, size_t *idx) {
+ struct iovec *iov;
+ ssize_t k;
+ size_t n;
+ unsigned j;
+ int r;
+
+ assert(bus);
+ assert(m);
+ assert(idx);
+ assert(bus->state == BUS_RUNNING || bus->state == BUS_HELLO);
+
+ if (*idx >= BUS_MESSAGE_SIZE(m))
+ return 0;
+
+ r = bus_message_setup_iovec(m);
+ if (r < 0)
+ return r;
+
+ n = m->n_iovec * sizeof(struct iovec);
+ iov = alloca(n);
+ memcpy_safe(iov, m->iovec, n);
+
+ j = 0;
+ iovec_advance(iov, &j, *idx);
+
+ if (bus->prefer_writev)
+ k = writev(bus->output_fd, iov, m->n_iovec);
+ else {
+ struct msghdr mh = {
+ .msg_iov = iov,
+ .msg_iovlen = m->n_iovec,
+ };
+
+ if (m->n_fds > 0) {
+ struct cmsghdr *control;
+
+ mh.msg_control = control = alloca(CMSG_SPACE(sizeof(int) * m->n_fds));
+ mh.msg_controllen = control->cmsg_len = CMSG_LEN(sizeof(int) * m->n_fds);
+ control->cmsg_level = SOL_SOCKET;
+ control->cmsg_type = SCM_RIGHTS;
+ memcpy(CMSG_DATA(control), m->fds, sizeof(int) * m->n_fds);
+ }
+
+ k = sendmsg(bus->output_fd, &mh, MSG_DONTWAIT|MSG_NOSIGNAL);
+ if (k < 0 && errno == ENOTSOCK) {
+ bus->prefer_writev = true;
+ k = writev(bus->output_fd, iov, m->n_iovec);
+ }
+ }
+
+ if (k < 0)
+ return errno == EAGAIN ? 0 : -errno;
+
+ *idx += (size_t) k;
+ return 1;
+}
+
+static int bus_socket_read_message_need(sd_bus *bus, size_t *need) {
+ uint32_t a, b;
+ uint8_t e;
+ uint64_t sum;
+
+ assert(bus);
+ assert(need);
+ assert(bus->state == BUS_RUNNING || bus->state == BUS_HELLO);
+
+ if (bus->rbuffer_size < sizeof(struct bus_header)) {
+ *need = sizeof(struct bus_header) + 8;
+
+ /* Minimum message size:
+ *
+ * Header +
+ *
+ * Method Call: +2 string headers
+ * Signal: +3 string headers
+ * Method Error: +1 string headers
+ * +1 uint32 headers
+ * Method Reply: +1 uint32 headers
+ *
+ * A string header is at least 9 bytes
+ * A uint32 header is at least 8 bytes
+ *
+ * Hence the minimum message size of a valid message
+ * is header + 8 bytes */
+
+ return 0;
+ }
+
+ a = ((const uint32_t*) bus->rbuffer)[1];
+ b = ((const uint32_t*) bus->rbuffer)[3];
+
+ e = ((const uint8_t*) bus->rbuffer)[0];
+ if (e == BUS_LITTLE_ENDIAN) {
+ a = le32toh(a);
+ b = le32toh(b);
+ } else if (e == BUS_BIG_ENDIAN) {
+ a = be32toh(a);
+ b = be32toh(b);
+ } else
+ return -EBADMSG;
+
+ sum = (uint64_t) sizeof(struct bus_header) + (uint64_t) ALIGN_TO(b, 8) + (uint64_t) a;
+ if (sum >= BUS_MESSAGE_SIZE_MAX)
+ return -ENOBUFS;
+
+ *need = (size_t) sum;
+ return 0;
+}
+
+static int bus_socket_make_message(sd_bus *bus, size_t size) {
+ sd_bus_message *t;
+ void *b;
+ int r;
+
+ assert(bus);
+ assert(bus->rbuffer_size >= size);
+ assert(bus->state == BUS_RUNNING || bus->state == BUS_HELLO);
+
+ r = bus_rqueue_make_room(bus);
+ if (r < 0)
+ return r;
+
+ if (bus->rbuffer_size > size) {
+ b = memdup((const uint8_t*) bus->rbuffer + size,
+ bus->rbuffer_size - size);
+ if (!b)
+ return -ENOMEM;
+ } else
+ b = NULL;
+
+ r = bus_message_from_malloc(bus,
+ bus->rbuffer, size,
+ bus->fds, bus->n_fds,
+ NULL,
+ &t);
+ if (r < 0) {
+ free(b);
+ return r;
+ }
+
+ bus->rbuffer = b;
+ bus->rbuffer_size -= size;
+
+ bus->fds = NULL;
+ bus->n_fds = 0;
+
+ bus->rqueue[bus->rqueue_size++] = t;
+
+ return 1;
+}
+
+int bus_socket_read_message(sd_bus *bus) {
+ struct msghdr mh;
+ struct iovec iov = {};
+ ssize_t k;
+ size_t need;
+ int r;
+ void *b;
+ union {
+ struct cmsghdr cmsghdr;
+ uint8_t buf[CMSG_SPACE(sizeof(int) * BUS_FDS_MAX)];
+ } control;
+ bool handle_cmsg = false;
+
+ assert(bus);
+ assert(bus->state == BUS_RUNNING || bus->state == BUS_HELLO);
+
+ r = bus_socket_read_message_need(bus, &need);
+ if (r < 0)
+ return r;
+
+ if (bus->rbuffer_size >= need)
+ return bus_socket_make_message(bus, need);
+
+ b = realloc(bus->rbuffer, need);
+ if (!b)
+ return -ENOMEM;
+
+ bus->rbuffer = b;
+
+ iov.iov_base = (uint8_t*) bus->rbuffer + bus->rbuffer_size;
+ iov.iov_len = need - bus->rbuffer_size;
+
+ if (bus->prefer_readv)
+ k = readv(bus->input_fd, &iov, 1);
+ else {
+ zero(mh);
+ mh.msg_iov = &iov;
+ mh.msg_iovlen = 1;
+ mh.msg_control = &control;
+ mh.msg_controllen = sizeof(control);
+
+ k = recvmsg(bus->input_fd, &mh, MSG_DONTWAIT|MSG_NOSIGNAL|MSG_CMSG_CLOEXEC);
+ if (k < 0 && errno == ENOTSOCK) {
+ bus->prefer_readv = true;
+ k = readv(bus->input_fd, &iov, 1);
+ } else
+ handle_cmsg = true;
+ }
+ if (k < 0)
+ return errno == EAGAIN ? 0 : -errno;
+ if (k == 0)
+ return -ECONNRESET;
+
+ bus->rbuffer_size += k;
+
+ if (handle_cmsg) {
+ struct cmsghdr *cmsg;
+
+ CMSG_FOREACH(cmsg, &mh)
+ if (cmsg->cmsg_level == SOL_SOCKET &&
+ cmsg->cmsg_type == SCM_RIGHTS) {
+ int n, *f;
+
+ n = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int);
+
+ if (!bus->can_fds) {
+ /* Whut? We received fds but this
+ * isn't actually enabled? Close them,
+ * and fail */
+
+ close_many((int*) CMSG_DATA(cmsg), n);
+ return -EIO;
+ }
+
+ f = realloc(bus->fds, sizeof(int) * (bus->n_fds + n));
+ if (!f) {
+ close_many((int*) CMSG_DATA(cmsg), n);
+ return -ENOMEM;
+ }
+
+ memcpy_safe(f + bus->n_fds, CMSG_DATA(cmsg), n * sizeof(int));
+ bus->fds = f;
+ bus->n_fds += n;
+ } else
+ log_debug("Got unexpected auxiliary data with level=%d and type=%d",
+ cmsg->cmsg_level, cmsg->cmsg_type);
+ }
+
+ r = bus_socket_read_message_need(bus, &need);
+ if (r < 0)
+ return r;
+
+ if (bus->rbuffer_size >= need)
+ return bus_socket_make_message(bus, need);
+
+ return 1;
+}
+
+int bus_socket_process_opening(sd_bus *b) {
+ int error = 0;
+ socklen_t slen = sizeof(error);
+ struct pollfd p = {
+ .fd = b->output_fd,
+ .events = POLLOUT,
+ };
+ int r;
+
+ assert(b->state == BUS_OPENING);
+
+ r = poll(&p, 1, 0);
+ if (r < 0)
+ return -errno;
+
+ if (!(p.revents & (POLLOUT|POLLERR|POLLHUP)))
+ return 0;
+
+ r = getsockopt(b->output_fd, SOL_SOCKET, SO_ERROR, &error, &slen);
+ if (r < 0)
+ b->last_connect_error = errno;
+ else if (error != 0)
+ b->last_connect_error = error;
+ else if (p.revents & (POLLERR|POLLHUP))
+ b->last_connect_error = ECONNREFUSED;
+ else
+ return bus_socket_start_auth(b);
+
+ return bus_next_address(b);
+}
+
+int bus_socket_process_authenticating(sd_bus *b) {
+ int r;
+
+ assert(b);
+ assert(b->state == BUS_AUTHENTICATING);
+
+ if (now(CLOCK_MONOTONIC) >= b->auth_timeout)
+ return -ETIMEDOUT;
+
+ r = bus_socket_write_auth(b);
+ if (r != 0)
+ return r;
+
+ return bus_socket_read_auth(b);
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-socket.h b/src/libsystemd/libsystemd-internal/sd-bus/bus-socket.h
new file mode 100644
index 0000000000..6e1d32e6a7
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-socket.h
@@ -0,0 +1,37 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <systemd/sd-bus.h>
+
+void bus_socket_setup(sd_bus *b);
+
+int bus_socket_connect(sd_bus *b);
+int bus_socket_exec(sd_bus *b);
+int bus_socket_take_fd(sd_bus *b);
+int bus_socket_start_auth(sd_bus *b);
+
+int bus_socket_write_message(sd_bus *bus, sd_bus_message *m, size_t *idx);
+int bus_socket_read_message(sd_bus *bus);
+
+int bus_socket_process_opening(sd_bus *b);
+int bus_socket_process_authenticating(sd_bus *b);
+
+bool bus_socket_auth_needs_write(sd_bus *b);
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-track.c b/src/libsystemd/libsystemd-internal/sd-bus/bus-track.c
new file mode 100644
index 0000000000..81e6d22816
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-track.c
@@ -0,0 +1,337 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <systemd/sd-bus.h>
+
+#include "alloc-util.h"
+#include "bus-internal.h"
+#include "bus-track.h"
+#include "bus-util.h"
+
+struct sd_bus_track {
+ unsigned n_ref;
+ sd_bus *bus;
+ sd_bus_track_handler_t handler;
+ void *userdata;
+ Hashmap *names;
+ LIST_FIELDS(sd_bus_track, queue);
+ Iterator iterator;
+ bool in_queue;
+ bool modified;
+};
+
+#define MATCH_PREFIX \
+ "type='signal'," \
+ "sender='org.freedesktop.DBus'," \
+ "path='/org/freedesktop/DBus'," \
+ "interface='org.freedesktop.DBus'," \
+ "member='NameOwnerChanged'," \
+ "arg0='"
+
+#define MATCH_SUFFIX \
+ "'"
+
+#define MATCH_FOR_NAME(name) \
+ ({ \
+ char *_x; \
+ size_t _l = strlen(name); \
+ _x = alloca(strlen(MATCH_PREFIX)+_l+strlen(MATCH_SUFFIX)+1); \
+ strcpy(stpcpy(stpcpy(_x, MATCH_PREFIX), name), MATCH_SUFFIX); \
+ _x; \
+ })
+
+static void bus_track_add_to_queue(sd_bus_track *track) {
+ assert(track);
+
+ if (track->in_queue)
+ return;
+
+ if (!track->handler)
+ return;
+
+ LIST_PREPEND(queue, track->bus->track_queue, track);
+ track->in_queue = true;
+}
+
+static void bus_track_remove_from_queue(sd_bus_track *track) {
+ assert(track);
+
+ if (!track->in_queue)
+ return;
+
+ LIST_REMOVE(queue, track->bus->track_queue, track);
+ track->in_queue = false;
+}
+
+_public_ int sd_bus_track_new(
+ sd_bus *bus,
+ sd_bus_track **track,
+ sd_bus_track_handler_t handler,
+ void *userdata) {
+
+ sd_bus_track *t;
+
+ assert_return(bus, -EINVAL);
+ assert_return(track, -EINVAL);
+
+ if (!bus->bus_client)
+ return -EINVAL;
+
+ t = new0(sd_bus_track, 1);
+ if (!t)
+ return -ENOMEM;
+
+ t->n_ref = 1;
+ t->handler = handler;
+ t->userdata = userdata;
+ t->bus = sd_bus_ref(bus);
+
+ bus_track_add_to_queue(t);
+
+ *track = t;
+ return 0;
+}
+
+_public_ sd_bus_track* sd_bus_track_ref(sd_bus_track *track) {
+
+ if (!track)
+ return NULL;
+
+ assert(track->n_ref > 0);
+
+ track->n_ref++;
+
+ return track;
+}
+
+_public_ sd_bus_track* sd_bus_track_unref(sd_bus_track *track) {
+ const char *n;
+
+ if (!track)
+ return NULL;
+
+ assert(track->n_ref > 0);
+
+ if (track->n_ref > 1) {
+ track->n_ref--;
+ return NULL;
+ }
+
+ while ((n = hashmap_first_key(track->names)))
+ sd_bus_track_remove_name(track, n);
+
+ bus_track_remove_from_queue(track);
+ hashmap_free(track->names);
+ sd_bus_unref(track->bus);
+ free(track);
+
+ return NULL;
+}
+
+static int on_name_owner_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ sd_bus_track *track = userdata;
+ const char *name, *old, *new;
+ int r;
+
+ assert(message);
+ assert(track);
+
+ r = sd_bus_message_read(message, "sss", &name, &old, &new);
+ if (r < 0)
+ return 0;
+
+ sd_bus_track_remove_name(track, name);
+ return 0;
+}
+
+_public_ int sd_bus_track_add_name(sd_bus_track *track, const char *name) {
+ _cleanup_(sd_bus_slot_unrefp) sd_bus_slot *slot = NULL;
+ _cleanup_free_ char *n = NULL;
+ const char *match;
+ int r;
+
+ assert_return(track, -EINVAL);
+ assert_return(service_name_is_valid(name), -EINVAL);
+
+ r = hashmap_ensure_allocated(&track->names, &string_hash_ops);
+ if (r < 0)
+ return r;
+
+ n = strdup(name);
+ if (!n)
+ return -ENOMEM;
+
+ /* First, subscribe to this name */
+ match = MATCH_FOR_NAME(n);
+ r = sd_bus_add_match(track->bus, &slot, match, on_name_owner_changed, track);
+ if (r < 0)
+ return r;
+
+ r = hashmap_put(track->names, n, slot);
+ if (r == -EEXIST)
+ return 0;
+ if (r < 0)
+ return r;
+
+ /* Second, check if it is currently existing, or maybe
+ * doesn't, or maybe disappeared already. */
+ r = sd_bus_get_name_creds(track->bus, n, 0, NULL);
+ if (r < 0) {
+ hashmap_remove(track->names, n);
+ return r;
+ }
+
+ n = NULL;
+ slot = NULL;
+
+ bus_track_remove_from_queue(track);
+ track->modified = true;
+
+ return 1;
+}
+
+_public_ int sd_bus_track_remove_name(sd_bus_track *track, const char *name) {
+ _cleanup_(sd_bus_slot_unrefp) sd_bus_slot *slot = NULL;
+ _cleanup_free_ char *n = NULL;
+
+ assert_return(name, -EINVAL);
+
+ if (!track)
+ return 0;
+
+ slot = hashmap_remove2(track->names, (char*) name, (void**) &n);
+ if (!slot)
+ return 0;
+
+ if (hashmap_isempty(track->names))
+ bus_track_add_to_queue(track);
+
+ track->modified = true;
+
+ return 1;
+}
+
+_public_ unsigned sd_bus_track_count(sd_bus_track *track) {
+ if (!track)
+ return 0;
+
+ return hashmap_size(track->names);
+}
+
+_public_ const char* sd_bus_track_contains(sd_bus_track *track, const char *name) {
+ assert_return(track, NULL);
+ assert_return(name, NULL);
+
+ return hashmap_get(track->names, (void*) name) ? name : NULL;
+}
+
+_public_ const char* sd_bus_track_first(sd_bus_track *track) {
+ const char *n = NULL;
+
+ if (!track)
+ return NULL;
+
+ track->modified = false;
+ track->iterator = ITERATOR_FIRST;
+
+ hashmap_iterate(track->names, &track->iterator, NULL, (const void**) &n);
+ return n;
+}
+
+_public_ const char* sd_bus_track_next(sd_bus_track *track) {
+ const char *n = NULL;
+
+ if (!track)
+ return NULL;
+
+ if (track->modified)
+ return NULL;
+
+ hashmap_iterate(track->names, &track->iterator, NULL, (const void**) &n);
+ return n;
+}
+
+_public_ int sd_bus_track_add_sender(sd_bus_track *track, sd_bus_message *m) {
+ const char *sender;
+
+ assert_return(track, -EINVAL);
+ assert_return(m, -EINVAL);
+
+ sender = sd_bus_message_get_sender(m);
+ if (!sender)
+ return -EINVAL;
+
+ return sd_bus_track_add_name(track, sender);
+}
+
+_public_ int sd_bus_track_remove_sender(sd_bus_track *track, sd_bus_message *m) {
+ const char *sender;
+
+ assert_return(track, -EINVAL);
+ assert_return(m, -EINVAL);
+
+ sender = sd_bus_message_get_sender(m);
+ if (!sender)
+ return -EINVAL;
+
+ return sd_bus_track_remove_name(track, sender);
+}
+
+_public_ sd_bus* sd_bus_track_get_bus(sd_bus_track *track) {
+ assert_return(track, NULL);
+
+ return track->bus;
+}
+
+void bus_track_dispatch(sd_bus_track *track) {
+ int r;
+
+ assert(track);
+ assert(track->in_queue);
+ assert(track->handler);
+
+ bus_track_remove_from_queue(track);
+
+ sd_bus_track_ref(track);
+
+ r = track->handler(track, track->userdata);
+ if (r < 0)
+ log_debug_errno(r, "Failed to process track handler: %m");
+ else if (r == 0)
+ bus_track_add_to_queue(track);
+
+ sd_bus_track_unref(track);
+}
+
+_public_ void *sd_bus_track_get_userdata(sd_bus_track *track) {
+ assert_return(track, NULL);
+
+ return track->userdata;
+}
+
+_public_ void *sd_bus_track_set_userdata(sd_bus_track *track, void *userdata) {
+ void *ret;
+
+ assert_return(track, NULL);
+
+ ret = track->userdata;
+ track->userdata = userdata;
+
+ return ret;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-track.h b/src/libsystemd/libsystemd-internal/sd-bus/bus-track.h
new file mode 100644
index 0000000000..7d93a727d6
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-track.h
@@ -0,0 +1,22 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+void bus_track_dispatch(sd_bus_track *track);
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-type.c b/src/libsystemd/libsystemd-internal/sd-bus/bus-type.c
new file mode 100644
index 0000000000..c692afc580
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-type.c
@@ -0,0 +1,176 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "bus-type.h"
+
+bool bus_type_is_valid(char c) {
+ static const char valid[] = {
+ SD_BUS_TYPE_BYTE,
+ SD_BUS_TYPE_BOOLEAN,
+ SD_BUS_TYPE_INT16,
+ SD_BUS_TYPE_UINT16,
+ SD_BUS_TYPE_INT32,
+ SD_BUS_TYPE_UINT32,
+ SD_BUS_TYPE_INT64,
+ SD_BUS_TYPE_UINT64,
+ SD_BUS_TYPE_DOUBLE,
+ SD_BUS_TYPE_STRING,
+ SD_BUS_TYPE_OBJECT_PATH,
+ SD_BUS_TYPE_SIGNATURE,
+ SD_BUS_TYPE_ARRAY,
+ SD_BUS_TYPE_VARIANT,
+ SD_BUS_TYPE_STRUCT,
+ SD_BUS_TYPE_DICT_ENTRY,
+ SD_BUS_TYPE_UNIX_FD
+ };
+
+ return !!memchr(valid, c, sizeof(valid));
+}
+
+bool bus_type_is_valid_in_signature(char c) {
+ static const char valid[] = {
+ SD_BUS_TYPE_BYTE,
+ SD_BUS_TYPE_BOOLEAN,
+ SD_BUS_TYPE_INT16,
+ SD_BUS_TYPE_UINT16,
+ SD_BUS_TYPE_INT32,
+ SD_BUS_TYPE_UINT32,
+ SD_BUS_TYPE_INT64,
+ SD_BUS_TYPE_UINT64,
+ SD_BUS_TYPE_DOUBLE,
+ SD_BUS_TYPE_STRING,
+ SD_BUS_TYPE_OBJECT_PATH,
+ SD_BUS_TYPE_SIGNATURE,
+ SD_BUS_TYPE_ARRAY,
+ SD_BUS_TYPE_VARIANT,
+ SD_BUS_TYPE_STRUCT_BEGIN,
+ SD_BUS_TYPE_STRUCT_END,
+ SD_BUS_TYPE_DICT_ENTRY_BEGIN,
+ SD_BUS_TYPE_DICT_ENTRY_END,
+ SD_BUS_TYPE_UNIX_FD
+ };
+
+ return !!memchr(valid, c, sizeof(valid));
+}
+
+bool bus_type_is_basic(char c) {
+ static const char valid[] = {
+ SD_BUS_TYPE_BYTE,
+ SD_BUS_TYPE_BOOLEAN,
+ SD_BUS_TYPE_INT16,
+ SD_BUS_TYPE_UINT16,
+ SD_BUS_TYPE_INT32,
+ SD_BUS_TYPE_UINT32,
+ SD_BUS_TYPE_INT64,
+ SD_BUS_TYPE_UINT64,
+ SD_BUS_TYPE_DOUBLE,
+ SD_BUS_TYPE_STRING,
+ SD_BUS_TYPE_OBJECT_PATH,
+ SD_BUS_TYPE_SIGNATURE,
+ SD_BUS_TYPE_UNIX_FD
+ };
+
+ return !!memchr(valid, c, sizeof(valid));
+}
+
+bool bus_type_is_trivial(char c) {
+ static const char valid[] = {
+ SD_BUS_TYPE_BYTE,
+ SD_BUS_TYPE_BOOLEAN,
+ SD_BUS_TYPE_INT16,
+ SD_BUS_TYPE_UINT16,
+ SD_BUS_TYPE_INT32,
+ SD_BUS_TYPE_UINT32,
+ SD_BUS_TYPE_INT64,
+ SD_BUS_TYPE_UINT64,
+ SD_BUS_TYPE_DOUBLE
+ };
+
+ return !!memchr(valid, c, sizeof(valid));
+}
+
+bool bus_type_is_container(char c) {
+ static const char valid[] = {
+ SD_BUS_TYPE_ARRAY,
+ SD_BUS_TYPE_VARIANT,
+ SD_BUS_TYPE_STRUCT,
+ SD_BUS_TYPE_DICT_ENTRY
+ };
+
+ return !!memchr(valid, c, sizeof(valid));
+}
+
+int bus_type_get_alignment(char c) {
+
+ switch (c) {
+ case SD_BUS_TYPE_BYTE:
+ case SD_BUS_TYPE_SIGNATURE:
+ case SD_BUS_TYPE_VARIANT:
+ return 1;
+
+ case SD_BUS_TYPE_INT16:
+ case SD_BUS_TYPE_UINT16:
+ return 2;
+
+ case SD_BUS_TYPE_BOOLEAN:
+ case SD_BUS_TYPE_INT32:
+ case SD_BUS_TYPE_UINT32:
+ case SD_BUS_TYPE_STRING:
+ case SD_BUS_TYPE_OBJECT_PATH:
+ case SD_BUS_TYPE_ARRAY:
+ case SD_BUS_TYPE_UNIX_FD:
+ return 4;
+
+ case SD_BUS_TYPE_INT64:
+ case SD_BUS_TYPE_UINT64:
+ case SD_BUS_TYPE_DOUBLE:
+ case SD_BUS_TYPE_STRUCT:
+ case SD_BUS_TYPE_STRUCT_BEGIN:
+ case SD_BUS_TYPE_DICT_ENTRY:
+ case SD_BUS_TYPE_DICT_ENTRY_BEGIN:
+ return 8;
+ }
+
+ return -EINVAL;
+}
+
+int bus_type_get_size(char c) {
+
+ switch (c) {
+ case SD_BUS_TYPE_BYTE:
+ return 1;
+
+ case SD_BUS_TYPE_INT16:
+ case SD_BUS_TYPE_UINT16:
+ return 2;
+
+ case SD_BUS_TYPE_BOOLEAN:
+ case SD_BUS_TYPE_INT32:
+ case SD_BUS_TYPE_UINT32:
+ case SD_BUS_TYPE_UNIX_FD:
+ return 4;
+
+ case SD_BUS_TYPE_INT64:
+ case SD_BUS_TYPE_UINT64:
+ case SD_BUS_TYPE_DOUBLE:
+ return 8;
+ }
+
+ return -EINVAL;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/bus-type.h b/src/libsystemd/libsystemd-internal/sd-bus/bus-type.h
new file mode 100644
index 0000000000..7169b0f765
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/bus-type.h
@@ -0,0 +1,37 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <stdbool.h>
+
+#include <systemd/sd-bus.h>
+
+#include "macro.h"
+
+bool bus_type_is_valid(char c) _const_;
+bool bus_type_is_valid_in_signature(char c) _const_;
+bool bus_type_is_basic(char c) _const_;
+/* "trivial" is systemd's term for what the D-Bus Specification calls
+ * a "fixed type": that is, a basic type of fixed length */
+bool bus_type_is_trivial(char c) _const_;
+bool bus_type_is_container(char c) _const_;
+
+int bus_type_get_alignment(char c) _const_;
+int bus_type_get_size(char c) _const_;
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/kdbus.h b/src/libsystemd/libsystemd-internal/sd-bus/kdbus.h
new file mode 100644
index 0000000000..ecffc6b13c
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/kdbus.h
@@ -0,0 +1,980 @@
+/*
+ * kdbus is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU Lesser General Public License as published by the
+ * Free Software Foundation; either version 2.1 of the License, or (at
+ * your option) any later version.
+ */
+
+#ifndef _UAPI_KDBUS_H_
+#define _UAPI_KDBUS_H_
+
+#include <linux/ioctl.h>
+#include <linux/types.h>
+
+#define KDBUS_IOCTL_MAGIC 0x95
+#define KDBUS_SRC_ID_KERNEL (0)
+#define KDBUS_DST_ID_NAME (0)
+#define KDBUS_MATCH_ID_ANY (~0ULL)
+#define KDBUS_DST_ID_BROADCAST (~0ULL)
+#define KDBUS_FLAG_NEGOTIATE (1ULL << 63)
+
+/**
+ * struct kdbus_notify_id_change - name registry change message
+ * @id: New or former owner of the name
+ * @flags: flags field from KDBUS_HELLO_*
+ *
+ * Sent from kernel to userspace when the owner or activator of
+ * a well-known name changes.
+ *
+ * Attached to:
+ * KDBUS_ITEM_ID_ADD
+ * KDBUS_ITEM_ID_REMOVE
+ */
+struct kdbus_notify_id_change {
+ __u64 id;
+ __u64 flags;
+} __attribute__((__aligned__(8)));
+
+/**
+ * struct kdbus_notify_name_change - name registry change message
+ * @old_id: ID and flags of former owner of a name
+ * @new_id: ID and flags of new owner of a name
+ * @name: Well-known name
+ *
+ * Sent from kernel to userspace when the owner or activator of
+ * a well-known name changes.
+ *
+ * Attached to:
+ * KDBUS_ITEM_NAME_ADD
+ * KDBUS_ITEM_NAME_REMOVE
+ * KDBUS_ITEM_NAME_CHANGE
+ */
+struct kdbus_notify_name_change {
+ struct kdbus_notify_id_change old_id;
+ struct kdbus_notify_id_change new_id;
+ char name[0];
+} __attribute__((__aligned__(8)));
+
+/**
+ * struct kdbus_creds - process credentials
+ * @uid: User ID
+ * @euid: Effective UID
+ * @suid: Saved UID
+ * @fsuid: Filesystem UID
+ * @gid: Group ID
+ * @egid: Effective GID
+ * @sgid: Saved GID
+ * @fsgid: Filesystem GID
+ *
+ * Attached to:
+ * KDBUS_ITEM_CREDS
+ */
+struct kdbus_creds {
+ __u64 uid;
+ __u64 euid;
+ __u64 suid;
+ __u64 fsuid;
+ __u64 gid;
+ __u64 egid;
+ __u64 sgid;
+ __u64 fsgid;
+} __attribute__((__aligned__(8)));
+
+/**
+ * struct kdbus_pids - process identifiers
+ * @pid: Process ID
+ * @tid: Thread ID
+ * @ppid: Parent process ID
+ *
+ * The PID and TID of a process.
+ *
+ * Attached to:
+ * KDBUS_ITEM_PIDS
+ */
+struct kdbus_pids {
+ __u64 pid;
+ __u64 tid;
+ __u64 ppid;
+} __attribute__((__aligned__(8)));
+
+/**
+ * struct kdbus_caps - process capabilities
+ * @last_cap: Highest currently known capability bit
+ * @caps: Variable number of 32-bit capabilities flags
+ *
+ * Contains a variable number of 32-bit capabilities flags.
+ *
+ * Attached to:
+ * KDBUS_ITEM_CAPS
+ */
+struct kdbus_caps {
+ __u32 last_cap;
+ __u32 caps[0];
+} __attribute__((__aligned__(8)));
+
+/**
+ * struct kdbus_audit - audit information
+ * @sessionid: The audit session ID
+ * @loginuid: The audit login uid
+ *
+ * Attached to:
+ * KDBUS_ITEM_AUDIT
+ */
+struct kdbus_audit {
+ __u32 sessionid;
+ __u32 loginuid;
+} __attribute__((__aligned__(8)));
+
+/**
+ * struct kdbus_timestamp
+ * @seqnum: Global per-domain message sequence number
+ * @monotonic_ns: Monotonic timestamp, in nanoseconds
+ * @realtime_ns: Realtime timestamp, in nanoseconds
+ *
+ * Attached to:
+ * KDBUS_ITEM_TIMESTAMP
+ */
+struct kdbus_timestamp {
+ __u64 seqnum;
+ __u64 monotonic_ns;
+ __u64 realtime_ns;
+} __attribute__((__aligned__(8)));
+
+/**
+ * struct kdbus_vec - I/O vector for kdbus payload items
+ * @size: The size of the vector
+ * @address: Memory address of data buffer
+ * @offset: Offset in the in-message payload memory,
+ * relative to the message head
+ *
+ * Attached to:
+ * KDBUS_ITEM_PAYLOAD_VEC, KDBUS_ITEM_PAYLOAD_OFF
+ */
+struct kdbus_vec {
+ __u64 size;
+ union {
+ __u64 address;
+ __u64 offset;
+ };
+} __attribute__((__aligned__(8)));
+
+/**
+ * struct kdbus_bloom_parameter - bus-wide bloom parameters
+ * @size: Size of the bit field in bytes (m / 8)
+ * @n_hash: Number of hash functions used (k)
+ */
+struct kdbus_bloom_parameter {
+ __u64 size;
+ __u64 n_hash;
+} __attribute__((__aligned__(8)));
+
+/**
+ * struct kdbus_bloom_filter - bloom filter containing n elements
+ * @generation: Generation of the element set in the filter
+ * @data: Bit field, multiple of 8 bytes
+ */
+struct kdbus_bloom_filter {
+ __u64 generation;
+ __u64 data[0];
+} __attribute__((__aligned__(8)));
+
+/**
+ * struct kdbus_memfd - a kdbus memfd
+ * @start: The offset into the memfd where the segment starts
+ * @size: The size of the memfd segment
+ * @fd: The file descriptor number
+ * @__pad: Padding to ensure proper alignment and size
+ *
+ * Attached to:
+ * KDBUS_ITEM_PAYLOAD_MEMFD
+ */
+struct kdbus_memfd {
+ __u64 start;
+ __u64 size;
+ int fd;
+ __u32 __pad;
+} __attribute__((__aligned__(8)));
+
+/**
+ * struct kdbus_name - a registered well-known name with its flags
+ * @flags: Flags from KDBUS_NAME_*
+ * @name: Well-known name
+ *
+ * Attached to:
+ * KDBUS_ITEM_OWNED_NAME
+ */
+struct kdbus_name {
+ __u64 flags;
+ char name[0];
+} __attribute__((__aligned__(8)));
+
+/**
+ * enum kdbus_policy_access_type - permissions of a policy record
+ * @_KDBUS_POLICY_ACCESS_NULL: Uninitialized/invalid
+ * @KDBUS_POLICY_ACCESS_USER: Grant access to a uid
+ * @KDBUS_POLICY_ACCESS_GROUP: Grant access to gid
+ * @KDBUS_POLICY_ACCESS_WORLD: World-accessible
+ */
+enum kdbus_policy_access_type {
+ _KDBUS_POLICY_ACCESS_NULL,
+ KDBUS_POLICY_ACCESS_USER,
+ KDBUS_POLICY_ACCESS_GROUP,
+ KDBUS_POLICY_ACCESS_WORLD,
+};
+
+/**
+ * enum kdbus_policy_access_flags - mode flags
+ * @KDBUS_POLICY_OWN: Allow to own a well-known name
+ * Implies KDBUS_POLICY_TALK and KDBUS_POLICY_SEE
+ * @KDBUS_POLICY_TALK: Allow communication to a well-known name
+ * Implies KDBUS_POLICY_SEE
+ * @KDBUS_POLICY_SEE: Allow to see a well-known name
+ */
+enum kdbus_policy_type {
+ KDBUS_POLICY_SEE = 0,
+ KDBUS_POLICY_TALK,
+ KDBUS_POLICY_OWN,
+};
+
+/**
+ * struct kdbus_policy_access - policy access item
+ * @type: One of KDBUS_POLICY_ACCESS_* types
+ * @access: Access to grant
+ * @id: For KDBUS_POLICY_ACCESS_USER, the uid
+ * For KDBUS_POLICY_ACCESS_GROUP, the gid
+ */
+struct kdbus_policy_access {
+ __u64 type; /* USER, GROUP, WORLD */
+ __u64 access; /* OWN, TALK, SEE */
+ __u64 id; /* uid, gid, 0 */
+} __attribute__((__aligned__(8)));
+
+/**
+ * enum kdbus_attach_flags - flags for metadata attachments
+ * @KDBUS_ATTACH_TIMESTAMP: Timestamp
+ * @KDBUS_ATTACH_CREDS: Credentials
+ * @KDBUS_ATTACH_PIDS: PIDs
+ * @KDBUS_ATTACH_AUXGROUPS: Auxiliary groups
+ * @KDBUS_ATTACH_NAMES: Well-known names
+ * @KDBUS_ATTACH_TID_COMM: The "comm" process identifier of the TID
+ * @KDBUS_ATTACH_PID_COMM: The "comm" process identifier of the PID
+ * @KDBUS_ATTACH_EXE: The path of the executable
+ * @KDBUS_ATTACH_CMDLINE: The process command line
+ * @KDBUS_ATTACH_CGROUP: The croup membership
+ * @KDBUS_ATTACH_CAPS: The process capabilities
+ * @KDBUS_ATTACH_SECLABEL: The security label
+ * @KDBUS_ATTACH_AUDIT: The audit IDs
+ * @KDBUS_ATTACH_CONN_DESCRIPTION: The human-readable connection name
+ * @_KDBUS_ATTACH_ALL: All of the above
+ * @_KDBUS_ATTACH_ANY: Wildcard match to enable any kind of
+ * metatdata.
+ */
+enum kdbus_attach_flags {
+ KDBUS_ATTACH_TIMESTAMP = 1ULL << 0,
+ KDBUS_ATTACH_CREDS = 1ULL << 1,
+ KDBUS_ATTACH_PIDS = 1ULL << 2,
+ KDBUS_ATTACH_AUXGROUPS = 1ULL << 3,
+ KDBUS_ATTACH_NAMES = 1ULL << 4,
+ KDBUS_ATTACH_TID_COMM = 1ULL << 5,
+ KDBUS_ATTACH_PID_COMM = 1ULL << 6,
+ KDBUS_ATTACH_EXE = 1ULL << 7,
+ KDBUS_ATTACH_CMDLINE = 1ULL << 8,
+ KDBUS_ATTACH_CGROUP = 1ULL << 9,
+ KDBUS_ATTACH_CAPS = 1ULL << 10,
+ KDBUS_ATTACH_SECLABEL = 1ULL << 11,
+ KDBUS_ATTACH_AUDIT = 1ULL << 12,
+ KDBUS_ATTACH_CONN_DESCRIPTION = 1ULL << 13,
+ _KDBUS_ATTACH_ALL = (1ULL << 14) - 1,
+ _KDBUS_ATTACH_ANY = ~0ULL
+};
+
+/**
+ * enum kdbus_item_type - item types to chain data in a list
+ * @_KDBUS_ITEM_NULL: Uninitialized/invalid
+ * @_KDBUS_ITEM_USER_BASE: Start of user items
+ * @KDBUS_ITEM_NEGOTIATE: Negotiate supported items
+ * @KDBUS_ITEM_PAYLOAD_VEC: Vector to data
+ * @KDBUS_ITEM_PAYLOAD_OFF: Data at returned offset to message head
+ * @KDBUS_ITEM_PAYLOAD_MEMFD: Data as sealed memfd
+ * @KDBUS_ITEM_FDS: Attached file descriptors
+ * @KDBUS_ITEM_CANCEL_FD: FD used to cancel a synchronous
+ * operation by writing to it from
+ * userspace
+ * @KDBUS_ITEM_BLOOM_PARAMETER: Bus-wide bloom parameters, used with
+ * KDBUS_CMD_BUS_MAKE, carries a
+ * struct kdbus_bloom_parameter
+ * @KDBUS_ITEM_BLOOM_FILTER: Bloom filter carried with a message,
+ * used to match against a bloom mask of a
+ * connection, carries a struct
+ * kdbus_bloom_filter
+ * @KDBUS_ITEM_BLOOM_MASK: Bloom mask used to match against a
+ * message'sbloom filter
+ * @KDBUS_ITEM_DST_NAME: Destination's well-known name
+ * @KDBUS_ITEM_MAKE_NAME: Name of domain, bus, endpoint
+ * @KDBUS_ITEM_ATTACH_FLAGS_SEND: Attach-flags, used for updating which
+ * metadata a connection opts in to send
+ * @KDBUS_ITEM_ATTACH_FLAGS_RECV: Attach-flags, used for updating which
+ * metadata a connection requests to
+ * receive for each reeceived message
+ * @KDBUS_ITEM_ID: Connection ID
+ * @KDBUS_ITEM_NAME: Well-know name with flags
+ * @_KDBUS_ITEM_ATTACH_BASE: Start of metadata attach items
+ * @KDBUS_ITEM_TIMESTAMP: Timestamp
+ * @KDBUS_ITEM_CREDS: Process credentials
+ * @KDBUS_ITEM_PIDS: Process identifiers
+ * @KDBUS_ITEM_AUXGROUPS: Auxiliary process groups
+ * @KDBUS_ITEM_OWNED_NAME: A name owned by the associated
+ * connection
+ * @KDBUS_ITEM_TID_COMM: Thread ID "comm" identifier
+ * (Don't trust this, see below.)
+ * @KDBUS_ITEM_PID_COMM: Process ID "comm" identifier
+ * (Don't trust this, see below.)
+ * @KDBUS_ITEM_EXE: The path of the executable
+ * (Don't trust this, see below.)
+ * @KDBUS_ITEM_CMDLINE: The process command line
+ * (Don't trust this, see below.)
+ * @KDBUS_ITEM_CGROUP: The croup membership
+ * @KDBUS_ITEM_CAPS: The process capabilities
+ * @KDBUS_ITEM_SECLABEL: The security label
+ * @KDBUS_ITEM_AUDIT: The audit IDs
+ * @KDBUS_ITEM_CONN_DESCRIPTION: The connection's human-readable name
+ * (debugging)
+ * @_KDBUS_ITEM_POLICY_BASE: Start of policy items
+ * @KDBUS_ITEM_POLICY_ACCESS: Policy access block
+ * @_KDBUS_ITEM_KERNEL_BASE: Start of kernel-generated message items
+ * @KDBUS_ITEM_NAME_ADD: Notification in kdbus_notify_name_change
+ * @KDBUS_ITEM_NAME_REMOVE: Notification in kdbus_notify_name_change
+ * @KDBUS_ITEM_NAME_CHANGE: Notification in kdbus_notify_name_change
+ * @KDBUS_ITEM_ID_ADD: Notification in kdbus_notify_id_change
+ * @KDBUS_ITEM_ID_REMOVE: Notification in kdbus_notify_id_change
+ * @KDBUS_ITEM_REPLY_TIMEOUT: Timeout has been reached
+ * @KDBUS_ITEM_REPLY_DEAD: Destination died
+ *
+ * N.B: The process and thread COMM fields, as well as the CMDLINE and
+ * EXE fields may be altered by unprivileged processes und should
+ * hence *not* used for security decisions. Peers should make use of
+ * these items only for informational purposes, such as generating log
+ * records.
+ */
+enum kdbus_item_type {
+ _KDBUS_ITEM_NULL,
+ _KDBUS_ITEM_USER_BASE,
+ KDBUS_ITEM_NEGOTIATE = _KDBUS_ITEM_USER_BASE,
+ KDBUS_ITEM_PAYLOAD_VEC,
+ KDBUS_ITEM_PAYLOAD_OFF,
+ KDBUS_ITEM_PAYLOAD_MEMFD,
+ KDBUS_ITEM_FDS,
+ KDBUS_ITEM_CANCEL_FD,
+ KDBUS_ITEM_BLOOM_PARAMETER,
+ KDBUS_ITEM_BLOOM_FILTER,
+ KDBUS_ITEM_BLOOM_MASK,
+ KDBUS_ITEM_DST_NAME,
+ KDBUS_ITEM_MAKE_NAME,
+ KDBUS_ITEM_ATTACH_FLAGS_SEND,
+ KDBUS_ITEM_ATTACH_FLAGS_RECV,
+ KDBUS_ITEM_ID,
+ KDBUS_ITEM_NAME,
+ KDBUS_ITEM_DST_ID,
+
+ /* keep these item types in sync with KDBUS_ATTACH_* flags */
+ _KDBUS_ITEM_ATTACH_BASE = 0x1000,
+ KDBUS_ITEM_TIMESTAMP = _KDBUS_ITEM_ATTACH_BASE,
+ KDBUS_ITEM_CREDS,
+ KDBUS_ITEM_PIDS,
+ KDBUS_ITEM_AUXGROUPS,
+ KDBUS_ITEM_OWNED_NAME,
+ KDBUS_ITEM_TID_COMM,
+ KDBUS_ITEM_PID_COMM,
+ KDBUS_ITEM_EXE,
+ KDBUS_ITEM_CMDLINE,
+ KDBUS_ITEM_CGROUP,
+ KDBUS_ITEM_CAPS,
+ KDBUS_ITEM_SECLABEL,
+ KDBUS_ITEM_AUDIT,
+ KDBUS_ITEM_CONN_DESCRIPTION,
+
+ _KDBUS_ITEM_POLICY_BASE = 0x2000,
+ KDBUS_ITEM_POLICY_ACCESS = _KDBUS_ITEM_POLICY_BASE,
+
+ _KDBUS_ITEM_KERNEL_BASE = 0x8000,
+ KDBUS_ITEM_NAME_ADD = _KDBUS_ITEM_KERNEL_BASE,
+ KDBUS_ITEM_NAME_REMOVE,
+ KDBUS_ITEM_NAME_CHANGE,
+ KDBUS_ITEM_ID_ADD,
+ KDBUS_ITEM_ID_REMOVE,
+ KDBUS_ITEM_REPLY_TIMEOUT,
+ KDBUS_ITEM_REPLY_DEAD,
+};
+
+/**
+ * struct kdbus_item - chain of data blocks
+ * @size: Overall data record size
+ * @type: Kdbus_item type of data
+ * @data: Generic bytes
+ * @data32: Generic 32 bit array
+ * @data64: Generic 64 bit array
+ * @str: Generic string
+ * @id: Connection ID
+ * @vec: KDBUS_ITEM_PAYLOAD_VEC
+ * @creds: KDBUS_ITEM_CREDS
+ * @audit: KDBUS_ITEM_AUDIT
+ * @timestamp: KDBUS_ITEM_TIMESTAMP
+ * @name: KDBUS_ITEM_NAME
+ * @bloom_parameter: KDBUS_ITEM_BLOOM_PARAMETER
+ * @bloom_filter: KDBUS_ITEM_BLOOM_FILTER
+ * @memfd: KDBUS_ITEM_PAYLOAD_MEMFD
+ * @name_change: KDBUS_ITEM_NAME_ADD
+ * KDBUS_ITEM_NAME_REMOVE
+ * KDBUS_ITEM_NAME_CHANGE
+ * @id_change: KDBUS_ITEM_ID_ADD
+ * KDBUS_ITEM_ID_REMOVE
+ * @policy: KDBUS_ITEM_POLICY_ACCESS
+ */
+struct kdbus_item {
+ __u64 size;
+ __u64 type;
+ union {
+ __u8 data[0];
+ __u32 data32[0];
+ __u64 data64[0];
+ char str[0];
+
+ __u64 id;
+ struct kdbus_vec vec;
+ struct kdbus_creds creds;
+ struct kdbus_pids pids;
+ struct kdbus_audit audit;
+ struct kdbus_caps caps;
+ struct kdbus_timestamp timestamp;
+ struct kdbus_name name;
+ struct kdbus_bloom_parameter bloom_parameter;
+ struct kdbus_bloom_filter bloom_filter;
+ struct kdbus_memfd memfd;
+ int fds[0];
+ struct kdbus_notify_name_change name_change;
+ struct kdbus_notify_id_change id_change;
+ struct kdbus_policy_access policy_access;
+ };
+} __attribute__((__aligned__(8)));
+
+/**
+ * enum kdbus_msg_flags - type of message
+ * @KDBUS_MSG_EXPECT_REPLY: Expect a reply message, used for
+ * method calls. The userspace-supplied
+ * cookie identifies the message and the
+ * respective reply carries the cookie
+ * in cookie_reply
+ * @KDBUS_MSG_NO_AUTO_START: Do not start a service if the addressed
+ * name is not currently active. This flag is
+ * not looked at by the kernel but only
+ * serves as hint for userspace implementations.
+ * @KDBUS_MSG_SIGNAL: Treat this message as signal
+ */
+enum kdbus_msg_flags {
+ KDBUS_MSG_EXPECT_REPLY = 1ULL << 0,
+ KDBUS_MSG_NO_AUTO_START = 1ULL << 1,
+ KDBUS_MSG_SIGNAL = 1ULL << 2,
+};
+
+/**
+ * enum kdbus_payload_type - type of payload carried by message
+ * @KDBUS_PAYLOAD_KERNEL: Kernel-generated simple message
+ * @KDBUS_PAYLOAD_DBUS: D-Bus marshalling "DBusDBus"
+ *
+ * Any payload-type is accepted. Common types will get added here once
+ * established.
+ */
+enum kdbus_payload_type {
+ KDBUS_PAYLOAD_KERNEL,
+ KDBUS_PAYLOAD_DBUS = 0x4442757344427573ULL,
+};
+
+/**
+ * struct kdbus_msg - the representation of a kdbus message
+ * @size: Total size of the message
+ * @flags: Message flags (KDBUS_MSG_*), userspace → kernel
+ * @priority: Message queue priority value
+ * @dst_id: 64-bit ID of the destination connection
+ * @src_id: 64-bit ID of the source connection
+ * @payload_type: Payload type (KDBUS_PAYLOAD_*)
+ * @cookie: Userspace-supplied cookie, for the connection
+ * to identify its messages
+ * @timeout_ns: The time to wait for a message reply from the peer.
+ * If there is no reply, and the send command is
+ * executed asynchronously, a kernel-generated message
+ * with an attached KDBUS_ITEM_REPLY_TIMEOUT item
+ * is sent to @src_id. For synchronously executed send
+ * command, the value denotes the maximum time the call
+ * blocks to wait for a reply. The timeout is expected in
+ * nanoseconds and as absolute CLOCK_MONOTONIC value.
+ * @cookie_reply: A reply to the requesting message with the same
+ * cookie. The requesting connection can match its
+ * request and the reply with this value
+ * @items: A list of kdbus_items containing the message payload
+ */
+struct kdbus_msg {
+ __u64 size;
+ __u64 flags;
+ __s64 priority;
+ __u64 dst_id;
+ __u64 src_id;
+ __u64 payload_type;
+ __u64 cookie;
+ union {
+ __u64 timeout_ns;
+ __u64 cookie_reply;
+ };
+ struct kdbus_item items[0];
+} __attribute__((__aligned__(8)));
+
+/**
+ * struct kdbus_msg_info - returned message container
+ * @offset: Offset of kdbus_msg slice in pool
+ * @msg_size: Copy of the kdbus_msg.size field
+ * @return_flags: Command return flags, kernel → userspace
+ */
+struct kdbus_msg_info {
+ __u64 offset;
+ __u64 msg_size;
+ __u64 return_flags;
+} __attribute__((__aligned__(8)));
+
+/**
+ * enum kdbus_send_flags - flags for sending messages
+ * @KDBUS_SEND_SYNC_REPLY: Wait for destination connection to
+ * reply to this message. The
+ * KDBUS_CMD_SEND ioctl() will block
+ * until the reply is received, and
+ * reply in struct kdbus_cmd_send will
+ * yield the offset in the sender's pool
+ * where the reply can be found.
+ * This flag is only valid if
+ * @KDBUS_MSG_EXPECT_REPLY is set as well.
+ */
+enum kdbus_send_flags {
+ KDBUS_SEND_SYNC_REPLY = 1ULL << 0,
+};
+
+/**
+ * struct kdbus_cmd_send - send message
+ * @size: Overall size of this structure
+ * @flags: Flags to change send behavior (KDBUS_SEND_*)
+ * @return_flags: Command return flags, kernel → userspace
+ * @msg_address: Storage address of the kdbus_msg to send
+ * @reply: Storage for message reply if KDBUS_SEND_SYNC_REPLY
+ * was given
+ * @items: Additional items for this command
+ */
+struct kdbus_cmd_send {
+ __u64 size;
+ __u64 flags;
+ __u64 return_flags;
+ __u64 msg_address;
+ struct kdbus_msg_info reply;
+ struct kdbus_item items[0];
+} __attribute__((__aligned__(8)));
+
+/**
+ * enum kdbus_recv_flags - flags for de-queuing messages
+ * @KDBUS_RECV_PEEK: Return the next queued message without
+ * actually de-queuing it, and without installing
+ * any file descriptors or other resources. It is
+ * usually used to determine the activating
+ * connection of a bus name.
+ * @KDBUS_RECV_DROP: Drop and free the next queued message and all
+ * its resources without actually receiving it.
+ * @KDBUS_RECV_USE_PRIORITY: Only de-queue messages with the specified or
+ * higher priority (lowest values); if not set,
+ * the priority value is ignored.
+ */
+enum kdbus_recv_flags {
+ KDBUS_RECV_PEEK = 1ULL << 0,
+ KDBUS_RECV_DROP = 1ULL << 1,
+ KDBUS_RECV_USE_PRIORITY = 1ULL << 2,
+};
+
+/**
+ * enum kdbus_recv_return_flags - return flags for message receive commands
+ * @KDBUS_RECV_RETURN_INCOMPLETE_FDS: One or more file descriptors could not
+ * be installed. These descriptors in
+ * KDBUS_ITEM_FDS will carry the value -1.
+ * @KDBUS_RECV_RETURN_DROPPED_MSGS: There have been dropped messages since
+ * the last time a message was received.
+ * The 'dropped_msgs' counter contains the
+ * number of messages dropped pool
+ * overflows or other missed broadcasts.
+ */
+enum kdbus_recv_return_flags {
+ KDBUS_RECV_RETURN_INCOMPLETE_FDS = 1ULL << 0,
+ KDBUS_RECV_RETURN_DROPPED_MSGS = 1ULL << 1,
+};
+
+/**
+ * struct kdbus_cmd_recv - struct to de-queue a buffered message
+ * @size: Overall size of this object
+ * @flags: KDBUS_RECV_* flags, userspace → kernel
+ * @return_flags: Command return flags, kernel → userspace
+ * @priority: Minimum priority of the messages to de-queue. Lowest
+ * values have the highest priority.
+ * @dropped_msgs: In case there were any dropped messages since the last
+ * time a message was received, this will be set to the
+ * number of lost messages and
+ * KDBUS_RECV_RETURN_DROPPED_MSGS will be set in
+ * 'return_flags'. This can only happen if the ioctl
+ * returns 0 or EAGAIN.
+ * @msg: Return storage for received message.
+ * @items: Additional items for this command.
+ *
+ * This struct is used with the KDBUS_CMD_RECV ioctl.
+ */
+struct kdbus_cmd_recv {
+ __u64 size;
+ __u64 flags;
+ __u64 return_flags;
+ __s64 priority;
+ __u64 dropped_msgs;
+ struct kdbus_msg_info msg;
+ struct kdbus_item items[0];
+} __attribute__((__aligned__(8)));
+
+/**
+ * struct kdbus_cmd_free - struct to free a slice of memory in the pool
+ * @size: Overall size of this structure
+ * @flags: Flags for the free command, userspace → kernel
+ * @return_flags: Command return flags, kernel → userspace
+ * @offset: The offset of the memory slice, as returned by other
+ * ioctls
+ * @items: Additional items to modify the behavior
+ *
+ * This struct is used with the KDBUS_CMD_FREE ioctl.
+ */
+struct kdbus_cmd_free {
+ __u64 size;
+ __u64 flags;
+ __u64 return_flags;
+ __u64 offset;
+ struct kdbus_item items[0];
+} __attribute__((__aligned__(8)));
+
+/**
+ * enum kdbus_hello_flags - flags for struct kdbus_cmd_hello
+ * @KDBUS_HELLO_ACCEPT_FD: The connection allows the reception of
+ * any passed file descriptors
+ * @KDBUS_HELLO_ACTIVATOR: Special-purpose connection which registers
+ * a well-know name for a process to be started
+ * when traffic arrives
+ * @KDBUS_HELLO_POLICY_HOLDER: Special-purpose connection which registers
+ * policy entries for a name. The provided name
+ * is not activated and not registered with the
+ * name database, it only allows unprivileged
+ * connections to acquire a name, talk or discover
+ * a service
+ * @KDBUS_HELLO_MONITOR: Special-purpose connection to monitor
+ * bus traffic
+ */
+enum kdbus_hello_flags {
+ KDBUS_HELLO_ACCEPT_FD = 1ULL << 0,
+ KDBUS_HELLO_ACTIVATOR = 1ULL << 1,
+ KDBUS_HELLO_POLICY_HOLDER = 1ULL << 2,
+ KDBUS_HELLO_MONITOR = 1ULL << 3,
+};
+
+/**
+ * struct kdbus_cmd_hello - struct to say hello to kdbus
+ * @size: The total size of the structure
+ * @flags: Connection flags (KDBUS_HELLO_*), userspace → kernel
+ * @return_flags: Command return flags, kernel → userspace
+ * @attach_flags_send: Mask of metadata to attach to each message sent
+ * off by this connection (KDBUS_ATTACH_*)
+ * @attach_flags_recv: Mask of metadata to attach to each message receieved
+ * by the new connection (KDBUS_ATTACH_*)
+ * @bus_flags: The flags field copied verbatim from the original
+ * KDBUS_CMD_BUS_MAKE ioctl. It's intended to be useful
+ * to do negotiation of features of the payload that is
+ * transferred (kernel → userspace)
+ * @id: The ID of this connection (kernel → userspace)
+ * @pool_size: Size of the connection's buffer where the received
+ * messages are placed
+ * @offset: Pool offset where items are returned to report
+ * additional information about the bus and the newly
+ * created connection.
+ * @items_size: Size of buffer returned in the pool slice at @offset.
+ * @id128: Unique 128-bit ID of the bus (kernel → userspace)
+ * @items: A list of items
+ *
+ * This struct is used with the KDBUS_CMD_HELLO ioctl.
+ */
+struct kdbus_cmd_hello {
+ __u64 size;
+ __u64 flags;
+ __u64 return_flags;
+ __u64 attach_flags_send;
+ __u64 attach_flags_recv;
+ __u64 bus_flags;
+ __u64 id;
+ __u64 pool_size;
+ __u64 offset;
+ __u64 items_size;
+ __u8 id128[16];
+ struct kdbus_item items[0];
+} __attribute__((__aligned__(8)));
+
+/**
+ * struct kdbus_info - connection information
+ * @size: total size of the struct
+ * @id: 64bit object ID
+ * @flags: object creation flags
+ * @items: list of items
+ *
+ * Note that the user is responsible for freeing the allocated memory with
+ * the KDBUS_CMD_FREE ioctl.
+ */
+struct kdbus_info {
+ __u64 size;
+ __u64 id;
+ __u64 flags;
+ struct kdbus_item items[0];
+} __attribute__((__aligned__(8)));
+
+/**
+ * enum kdbus_list_flags - what to include into the returned list
+ * @KDBUS_LIST_UNIQUE: active connections
+ * @KDBUS_LIST_ACTIVATORS: activator connections
+ * @KDBUS_LIST_NAMES: known well-known names
+ * @KDBUS_LIST_QUEUED: queued-up names
+ */
+enum kdbus_list_flags {
+ KDBUS_LIST_UNIQUE = 1ULL << 0,
+ KDBUS_LIST_NAMES = 1ULL << 1,
+ KDBUS_LIST_ACTIVATORS = 1ULL << 2,
+ KDBUS_LIST_QUEUED = 1ULL << 3,
+};
+
+/**
+ * struct kdbus_cmd_list - list connections
+ * @size: overall size of this object
+ * @flags: flags for the query (KDBUS_LIST_*), userspace → kernel
+ * @return_flags: command return flags, kernel → userspace
+ * @offset: Offset in the caller's pool buffer where an array of
+ * kdbus_info objects is stored.
+ * The user must use KDBUS_CMD_FREE to free the
+ * allocated memory.
+ * @list_size: size of returned list in bytes
+ * @items: Items for the command. Reserved for future use.
+ *
+ * This structure is used with the KDBUS_CMD_LIST ioctl.
+ */
+struct kdbus_cmd_list {
+ __u64 size;
+ __u64 flags;
+ __u64 return_flags;
+ __u64 offset;
+ __u64 list_size;
+ struct kdbus_item items[0];
+} __attribute__((__aligned__(8)));
+
+/**
+ * struct kdbus_cmd_info - struct used for KDBUS_CMD_CONN_INFO ioctl
+ * @size: The total size of the struct
+ * @flags: Flags for this ioctl, userspace → kernel
+ * @return_flags: Command return flags, kernel → userspace
+ * @id: The 64-bit ID of the connection. If set to zero, passing
+ * @name is required. kdbus will look up the name to
+ * determine the ID in this case.
+ * @attach_flags: Set of attach flags to specify the set of information
+ * to receive, userspace → kernel
+ * @offset: Returned offset in the caller's pool buffer where the
+ * kdbus_info struct result is stored. The user must
+ * use KDBUS_CMD_FREE to free the allocated memory.
+ * @info_size: Output buffer to report size of data at @offset.
+ * @items: The optional item list, containing the
+ * well-known name to look up as a KDBUS_ITEM_NAME.
+ * Only needed in case @id is zero.
+ *
+ * On success, the KDBUS_CMD_CONN_INFO ioctl will return 0 and @offset will
+ * tell the user the offset in the connection pool buffer at which to find the
+ * result in a struct kdbus_info.
+ */
+struct kdbus_cmd_info {
+ __u64 size;
+ __u64 flags;
+ __u64 return_flags;
+ __u64 id;
+ __u64 attach_flags;
+ __u64 offset;
+ __u64 info_size;
+ struct kdbus_item items[0];
+} __attribute__((__aligned__(8)));
+
+/**
+ * enum kdbus_cmd_match_flags - flags to control the KDBUS_CMD_MATCH_ADD ioctl
+ * @KDBUS_MATCH_REPLACE: If entries with the supplied cookie already
+ * exists, remove them before installing the new
+ * matches.
+ */
+enum kdbus_cmd_match_flags {
+ KDBUS_MATCH_REPLACE = 1ULL << 0,
+};
+
+/**
+ * struct kdbus_cmd_match - struct to add or remove matches
+ * @size: The total size of the struct
+ * @flags: Flags for match command (KDBUS_MATCH_*),
+ * userspace → kernel
+ * @return_flags: Command return flags, kernel → userspace
+ * @cookie: Userspace supplied cookie. When removing, the cookie
+ * identifies the match to remove
+ * @items: A list of items for additional information
+ *
+ * This structure is used with the KDBUS_CMD_MATCH_ADD and
+ * KDBUS_CMD_MATCH_REMOVE ioctl.
+ */
+struct kdbus_cmd_match {
+ __u64 size;
+ __u64 flags;
+ __u64 return_flags;
+ __u64 cookie;
+ struct kdbus_item items[0];
+} __attribute__((__aligned__(8)));
+
+/**
+ * enum kdbus_make_flags - Flags for KDBUS_CMD_{BUS,ENDPOINT}_MAKE
+ * @KDBUS_MAKE_ACCESS_GROUP: Make the bus or endpoint node group-accessible
+ * @KDBUS_MAKE_ACCESS_WORLD: Make the bus or endpoint node world-accessible
+ */
+enum kdbus_make_flags {
+ KDBUS_MAKE_ACCESS_GROUP = 1ULL << 0,
+ KDBUS_MAKE_ACCESS_WORLD = 1ULL << 1,
+};
+
+/**
+ * enum kdbus_name_flags - flags for KDBUS_CMD_NAME_ACQUIRE
+ * @KDBUS_NAME_REPLACE_EXISTING: Try to replace name of other connections
+ * @KDBUS_NAME_ALLOW_REPLACEMENT: Allow the replacement of the name
+ * @KDBUS_NAME_QUEUE: Name should be queued if busy
+ * @KDBUS_NAME_IN_QUEUE: Name is queued
+ * @KDBUS_NAME_ACTIVATOR: Name is owned by a activator connection
+ */
+enum kdbus_name_flags {
+ KDBUS_NAME_REPLACE_EXISTING = 1ULL << 0,
+ KDBUS_NAME_ALLOW_REPLACEMENT = 1ULL << 1,
+ KDBUS_NAME_QUEUE = 1ULL << 2,
+ KDBUS_NAME_IN_QUEUE = 1ULL << 3,
+ KDBUS_NAME_ACTIVATOR = 1ULL << 4,
+};
+
+/**
+ * struct kdbus_cmd - generic ioctl payload
+ * @size: Overall size of this structure
+ * @flags: Flags for this ioctl, userspace → kernel
+ * @return_flags: Ioctl return flags, kernel → userspace
+ * @items: Additional items to modify the behavior
+ *
+ * This is a generic ioctl payload object. It's used by all ioctls that only
+ * take flags and items as input.
+ */
+struct kdbus_cmd {
+ __u64 size;
+ __u64 flags;
+ __u64 return_flags;
+ struct kdbus_item items[0];
+} __attribute__((__aligned__(8)));
+
+/**
+ * Ioctl API
+ *
+ * KDBUS_CMD_BUS_MAKE: After opening the "control" node, this command
+ * creates a new bus with the specified
+ * name. The bus is immediately shut down and
+ * cleaned up when the opened file descriptor is
+ * closed.
+ *
+ * KDBUS_CMD_ENDPOINT_MAKE: Creates a new named special endpoint to talk to
+ * the bus. Such endpoints usually carry a more
+ * restrictive policy and grant restricted access
+ * to specific applications.
+ * KDBUS_CMD_ENDPOINT_UPDATE: Update the properties of a custom enpoint. Used
+ * to update the policy.
+ *
+ * KDBUS_CMD_HELLO: By opening the bus node, a connection is
+ * created. After a HELLO the opened connection
+ * becomes an active peer on the bus.
+ * KDBUS_CMD_UPDATE: Update the properties of a connection. Used to
+ * update the metadata subscription mask and
+ * policy.
+ * KDBUS_CMD_BYEBYE: Disconnect a connection. If there are no
+ * messages queued up in the connection's pool,
+ * the call succeeds, and the handle is rendered
+ * unusable. Otherwise, -EBUSY is returned without
+ * any further side-effects.
+ * KDBUS_CMD_FREE: Release the allocated memory in the receiver's
+ * pool.
+ * KDBUS_CMD_CONN_INFO: Retrieve credentials and properties of the
+ * initial creator of the connection. The data was
+ * stored at registration time and does not
+ * necessarily represent the connected process or
+ * the actual state of the process.
+ * KDBUS_CMD_BUS_CREATOR_INFO: Retrieve information of the creator of the bus
+ * a connection is attached to.
+ *
+ * KDBUS_CMD_SEND: Send a message and pass data from userspace to
+ * the kernel.
+ * KDBUS_CMD_RECV: Receive a message from the kernel which is
+ * placed in the receiver's pool.
+ *
+ * KDBUS_CMD_NAME_ACQUIRE: Request a well-known bus name to associate with
+ * the connection. Well-known names are used to
+ * address a peer on the bus.
+ * KDBUS_CMD_NAME_RELEASE: Release a well-known name the connection
+ * currently owns.
+ * KDBUS_CMD_LIST: Retrieve the list of all currently registered
+ * well-known and unique names.
+ *
+ * KDBUS_CMD_MATCH_ADD: Install a match which broadcast messages should
+ * be delivered to the connection.
+ * KDBUS_CMD_MATCH_REMOVE: Remove a current match for broadcast messages.
+ */
+enum kdbus_ioctl_type {
+ /* bus owner (00-0f) */
+ KDBUS_CMD_BUS_MAKE = _IOW(KDBUS_IOCTL_MAGIC, 0x00,
+ struct kdbus_cmd),
+
+ /* endpoint owner (10-1f) */
+ KDBUS_CMD_ENDPOINT_MAKE = _IOW(KDBUS_IOCTL_MAGIC, 0x10,
+ struct kdbus_cmd),
+ KDBUS_CMD_ENDPOINT_UPDATE = _IOW(KDBUS_IOCTL_MAGIC, 0x11,
+ struct kdbus_cmd),
+
+ /* connection owner (80-ff) */
+ KDBUS_CMD_HELLO = _IOWR(KDBUS_IOCTL_MAGIC, 0x80,
+ struct kdbus_cmd_hello),
+ KDBUS_CMD_UPDATE = _IOW(KDBUS_IOCTL_MAGIC, 0x81,
+ struct kdbus_cmd),
+ KDBUS_CMD_BYEBYE = _IOW(KDBUS_IOCTL_MAGIC, 0x82,
+ struct kdbus_cmd),
+ KDBUS_CMD_FREE = _IOW(KDBUS_IOCTL_MAGIC, 0x83,
+ struct kdbus_cmd_free),
+ KDBUS_CMD_CONN_INFO = _IOR(KDBUS_IOCTL_MAGIC, 0x84,
+ struct kdbus_cmd_info),
+ KDBUS_CMD_BUS_CREATOR_INFO = _IOR(KDBUS_IOCTL_MAGIC, 0x85,
+ struct kdbus_cmd_info),
+ KDBUS_CMD_LIST = _IOR(KDBUS_IOCTL_MAGIC, 0x86,
+ struct kdbus_cmd_list),
+
+ KDBUS_CMD_SEND = _IOW(KDBUS_IOCTL_MAGIC, 0x90,
+ struct kdbus_cmd_send),
+ KDBUS_CMD_RECV = _IOR(KDBUS_IOCTL_MAGIC, 0x91,
+ struct kdbus_cmd_recv),
+
+ KDBUS_CMD_NAME_ACQUIRE = _IOW(KDBUS_IOCTL_MAGIC, 0xa0,
+ struct kdbus_cmd),
+ KDBUS_CMD_NAME_RELEASE = _IOW(KDBUS_IOCTL_MAGIC, 0xa1,
+ struct kdbus_cmd),
+
+ KDBUS_CMD_MATCH_ADD = _IOW(KDBUS_IOCTL_MAGIC, 0xb0,
+ struct kdbus_cmd_match),
+ KDBUS_CMD_MATCH_REMOVE = _IOW(KDBUS_IOCTL_MAGIC, 0xb1,
+ struct kdbus_cmd_match),
+};
+
+#endif /* _UAPI_KDBUS_H_ */
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/sd-bus.c b/src/libsystemd/libsystemd-internal/sd-bus/sd-bus.c
new file mode 100644
index 0000000000..d3c194e135
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/sd-bus.c
@@ -0,0 +1,3791 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <endian.h>
+#include <netdb.h>
+#include <poll.h>
+#include <pthread.h>
+#include <stdlib.h>
+#include <sys/mman.h>
+#include <unistd.h>
+
+#include <systemd/sd-bus.h>
+
+#include "alloc-util.h"
+#include "bus-container.h"
+#include "bus-control.h"
+#include "bus-internal.h"
+#include "bus-kernel.h"
+#include "bus-label.h"
+#include "bus-message.h"
+#include "bus-objects.h"
+#include "bus-protocol.h"
+#include "bus-slot.h"
+#include "bus-socket.h"
+#include "bus-track.h"
+#include "bus-type.h"
+#include "bus-util.h"
+#include "cgroup-util.h"
+#include "def.h"
+#include "fd-util.h"
+#include "hexdecoct.h"
+#include "hostname-util.h"
+#include "macro.h"
+#include "missing.h"
+#include "parse-util.h"
+#include "string-util.h"
+#include "strv.h"
+#include "util.h"
+
+#define log_debug_bus_message(m) \
+ do { \
+ sd_bus_message *_mm = (m); \
+ log_debug("Got message type=%s sender=%s destination=%s object=%s interface=%s member=%s cookie=%" PRIu64 " reply_cookie=%" PRIu64 " error=%s", \
+ bus_message_type_to_string(_mm->header->type), \
+ strna(sd_bus_message_get_sender(_mm)), \
+ strna(sd_bus_message_get_destination(_mm)), \
+ strna(sd_bus_message_get_path(_mm)), \
+ strna(sd_bus_message_get_interface(_mm)), \
+ strna(sd_bus_message_get_member(_mm)), \
+ BUS_MESSAGE_COOKIE(_mm), \
+ _mm->reply_cookie, \
+ strna(_mm->error.message)); \
+ } while (false)
+
+static int bus_poll(sd_bus *bus, bool need_more, uint64_t timeout_usec);
+static int attach_io_events(sd_bus *b);
+static void detach_io_events(sd_bus *b);
+
+static thread_local sd_bus *default_system_bus = NULL;
+static thread_local sd_bus *default_user_bus = NULL;
+static thread_local sd_bus *default_starter_bus = NULL;
+
+static void bus_close_fds(sd_bus *b) {
+ assert(b);
+
+ detach_io_events(b);
+
+ if (b->input_fd != b->output_fd)
+ safe_close(b->output_fd);
+ b->output_fd = b->input_fd = safe_close(b->input_fd);
+}
+
+static void bus_reset_queues(sd_bus *b) {
+ assert(b);
+
+ while (b->rqueue_size > 0)
+ sd_bus_message_unref(b->rqueue[--b->rqueue_size]);
+
+ b->rqueue = mfree(b->rqueue);
+ b->rqueue_allocated = 0;
+
+ while (b->wqueue_size > 0)
+ sd_bus_message_unref(b->wqueue[--b->wqueue_size]);
+
+ b->wqueue = mfree(b->wqueue);
+ b->wqueue_allocated = 0;
+}
+
+static void bus_free(sd_bus *b) {
+ sd_bus_slot *s;
+
+ assert(b);
+ assert(!b->track_queue);
+
+ b->state = BUS_CLOSED;
+
+ sd_bus_detach_event(b);
+
+ while ((s = b->slots)) {
+ /* At this point only floating slots can still be
+ * around, because the non-floating ones keep a
+ * reference to the bus, and we thus couldn't be
+ * destructing right now... We forcibly disconnect the
+ * slots here, so that they still can be referenced by
+ * apps, but are dead. */
+
+ assert(s->floating);
+ bus_slot_disconnect(s);
+ sd_bus_slot_unref(s);
+ }
+
+ if (b->default_bus_ptr)
+ *b->default_bus_ptr = NULL;
+
+ bus_close_fds(b);
+
+ if (b->kdbus_buffer)
+ munmap(b->kdbus_buffer, KDBUS_POOL_SIZE);
+
+ free(b->label);
+ free(b->rbuffer);
+ free(b->unique_name);
+ free(b->auth_buffer);
+ free(b->address);
+ free(b->kernel);
+ free(b->machine);
+ free(b->fake_label);
+ free(b->cgroup_root);
+ free(b->description);
+
+ free(b->exec_path);
+ strv_free(b->exec_argv);
+
+ close_many(b->fds, b->n_fds);
+ free(b->fds);
+
+ bus_reset_queues(b);
+
+ ordered_hashmap_free_free(b->reply_callbacks);
+ prioq_free(b->reply_callbacks_prioq);
+
+ assert(b->match_callbacks.type == BUS_MATCH_ROOT);
+ bus_match_free(&b->match_callbacks);
+
+ hashmap_free_free(b->vtable_methods);
+ hashmap_free_free(b->vtable_properties);
+
+ assert(hashmap_isempty(b->nodes));
+ hashmap_free(b->nodes);
+
+ bus_kernel_flush_memfd(b);
+
+ assert_se(pthread_mutex_destroy(&b->memfd_cache_mutex) == 0);
+
+ free(b);
+}
+
+_public_ int sd_bus_new(sd_bus **ret) {
+ sd_bus *r;
+
+ assert_return(ret, -EINVAL);
+
+ r = new0(sd_bus, 1);
+ if (!r)
+ return -ENOMEM;
+
+ r->n_ref = REFCNT_INIT;
+ r->input_fd = r->output_fd = -1;
+ r->message_version = 1;
+ r->creds_mask |= SD_BUS_CREDS_WELL_KNOWN_NAMES|SD_BUS_CREDS_UNIQUE_NAME;
+ r->hello_flags |= KDBUS_HELLO_ACCEPT_FD;
+ r->attach_flags |= KDBUS_ATTACH_NAMES;
+ r->original_pid = getpid();
+
+ assert_se(pthread_mutex_init(&r->memfd_cache_mutex, NULL) == 0);
+
+ /* We guarantee that wqueue always has space for at least one
+ * entry */
+ if (!GREEDY_REALLOC(r->wqueue, r->wqueue_allocated, 1)) {
+ free(r);
+ return -ENOMEM;
+ }
+
+ *ret = r;
+ return 0;
+}
+
+_public_ int sd_bus_set_address(sd_bus *bus, const char *address) {
+ char *a;
+
+ assert_return(bus, -EINVAL);
+ assert_return(bus->state == BUS_UNSET, -EPERM);
+ assert_return(address, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ a = strdup(address);
+ if (!a)
+ return -ENOMEM;
+
+ free(bus->address);
+ bus->address = a;
+
+ return 0;
+}
+
+_public_ int sd_bus_set_fd(sd_bus *bus, int input_fd, int output_fd) {
+ assert_return(bus, -EINVAL);
+ assert_return(bus->state == BUS_UNSET, -EPERM);
+ assert_return(input_fd >= 0, -EBADF);
+ assert_return(output_fd >= 0, -EBADF);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ bus->input_fd = input_fd;
+ bus->output_fd = output_fd;
+ return 0;
+}
+
+_public_ int sd_bus_set_exec(sd_bus *bus, const char *path, char *const argv[]) {
+ char *p, **a;
+
+ assert_return(bus, -EINVAL);
+ assert_return(bus->state == BUS_UNSET, -EPERM);
+ assert_return(path, -EINVAL);
+ assert_return(!strv_isempty(argv), -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ p = strdup(path);
+ if (!p)
+ return -ENOMEM;
+
+ a = strv_copy(argv);
+ if (!a) {
+ free(p);
+ return -ENOMEM;
+ }
+
+ free(bus->exec_path);
+ strv_free(bus->exec_argv);
+
+ bus->exec_path = p;
+ bus->exec_argv = a;
+
+ return 0;
+}
+
+_public_ int sd_bus_set_bus_client(sd_bus *bus, int b) {
+ assert_return(bus, -EINVAL);
+ assert_return(bus->state == BUS_UNSET, -EPERM);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ bus->bus_client = !!b;
+ return 0;
+}
+
+_public_ int sd_bus_set_monitor(sd_bus *bus, int b) {
+ assert_return(bus, -EINVAL);
+ assert_return(bus->state == BUS_UNSET, -EPERM);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ SET_FLAG(bus->hello_flags, KDBUS_HELLO_MONITOR, b);
+ return 0;
+}
+
+_public_ int sd_bus_negotiate_fds(sd_bus *bus, int b) {
+ assert_return(bus, -EINVAL);
+ assert_return(bus->state == BUS_UNSET, -EPERM);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ SET_FLAG(bus->hello_flags, KDBUS_HELLO_ACCEPT_FD, b);
+ return 0;
+}
+
+_public_ int sd_bus_negotiate_timestamp(sd_bus *bus, int b) {
+ uint64_t new_flags;
+ assert_return(bus, -EINVAL);
+ assert_return(!IN_SET(bus->state, BUS_CLOSING, BUS_CLOSED), -EPERM);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ new_flags = bus->attach_flags;
+ SET_FLAG(new_flags, KDBUS_ATTACH_TIMESTAMP, b);
+
+ if (bus->attach_flags == new_flags)
+ return 0;
+
+ bus->attach_flags = new_flags;
+ if (bus->state != BUS_UNSET && bus->is_kernel)
+ bus_kernel_realize_attach_flags(bus);
+
+ return 0;
+}
+
+_public_ int sd_bus_negotiate_creds(sd_bus *bus, int b, uint64_t mask) {
+ uint64_t new_flags;
+
+ assert_return(bus, -EINVAL);
+ assert_return(mask <= _SD_BUS_CREDS_ALL, -EINVAL);
+ assert_return(!IN_SET(bus->state, BUS_CLOSING, BUS_CLOSED), -EPERM);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ SET_FLAG(bus->creds_mask, mask, b);
+
+ /* The well knowns we need unconditionally, so that matches can work */
+ bus->creds_mask |= SD_BUS_CREDS_WELL_KNOWN_NAMES|SD_BUS_CREDS_UNIQUE_NAME;
+
+ /* Make sure we don't lose the timestamp flag */
+ new_flags = (bus->attach_flags & KDBUS_ATTACH_TIMESTAMP) | attach_flags_to_kdbus(bus->creds_mask);
+ if (bus->attach_flags == new_flags)
+ return 0;
+
+ bus->attach_flags = new_flags;
+ if (bus->state != BUS_UNSET && bus->is_kernel)
+ bus_kernel_realize_attach_flags(bus);
+
+ return 0;
+}
+
+_public_ int sd_bus_set_server(sd_bus *bus, int b, sd_id128_t server_id) {
+ assert_return(bus, -EINVAL);
+ assert_return(b || sd_id128_equal(server_id, SD_ID128_NULL), -EINVAL);
+ assert_return(bus->state == BUS_UNSET, -EPERM);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ bus->is_server = !!b;
+ bus->server_id = server_id;
+ return 0;
+}
+
+_public_ int sd_bus_set_anonymous(sd_bus *bus, int b) {
+ assert_return(bus, -EINVAL);
+ assert_return(bus->state == BUS_UNSET, -EPERM);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ bus->anonymous_auth = !!b;
+ return 0;
+}
+
+_public_ int sd_bus_set_trusted(sd_bus *bus, int b) {
+ assert_return(bus, -EINVAL);
+ assert_return(bus->state == BUS_UNSET, -EPERM);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ bus->trusted = !!b;
+ return 0;
+}
+
+_public_ int sd_bus_set_description(sd_bus *bus, const char *description) {
+ assert_return(bus, -EINVAL);
+ assert_return(bus->state == BUS_UNSET, -EPERM);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ return free_and_strdup(&bus->description, description);
+}
+
+_public_ int sd_bus_set_allow_interactive_authorization(sd_bus *bus, int b) {
+ assert_return(bus, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ bus->allow_interactive_authorization = !!b;
+ return 0;
+}
+
+_public_ int sd_bus_get_allow_interactive_authorization(sd_bus *bus) {
+ assert_return(bus, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ return bus->allow_interactive_authorization;
+}
+
+static int hello_callback(sd_bus_message *reply, void *userdata, sd_bus_error *error) {
+ const char *s;
+ sd_bus *bus;
+ int r;
+
+ assert(reply);
+ bus = reply->bus;
+ assert(bus);
+ assert(bus->state == BUS_HELLO || bus->state == BUS_CLOSING);
+
+ r = sd_bus_message_get_errno(reply);
+ if (r > 0)
+ return -r;
+
+ r = sd_bus_message_read(reply, "s", &s);
+ if (r < 0)
+ return r;
+
+ if (!service_name_is_valid(s) || s[0] != ':')
+ return -EBADMSG;
+
+ bus->unique_name = strdup(s);
+ if (!bus->unique_name)
+ return -ENOMEM;
+
+ if (bus->state == BUS_HELLO)
+ bus->state = BUS_RUNNING;
+
+ return 1;
+}
+
+static int bus_send_hello(sd_bus *bus) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+ int r;
+
+ assert(bus);
+
+ if (!bus->bus_client || bus->is_kernel)
+ return 0;
+
+ r = sd_bus_message_new_method_call(
+ bus,
+ &m,
+ "org.freedesktop.DBus",
+ "/org/freedesktop/DBus",
+ "org.freedesktop.DBus",
+ "Hello");
+ if (r < 0)
+ return r;
+
+ return sd_bus_call_async(bus, NULL, m, hello_callback, NULL, 0);
+}
+
+int bus_start_running(sd_bus *bus) {
+ assert(bus);
+
+ if (bus->bus_client && !bus->is_kernel) {
+ bus->state = BUS_HELLO;
+ return 1;
+ }
+
+ bus->state = BUS_RUNNING;
+ return 1;
+}
+
+static int parse_address_key(const char **p, const char *key, char **value) {
+ size_t l, n = 0, allocated = 0;
+ const char *a;
+ char *r = NULL;
+
+ assert(p);
+ assert(*p);
+ assert(value);
+
+ if (key) {
+ l = strlen(key);
+ if (strncmp(*p, key, l) != 0)
+ return 0;
+
+ if ((*p)[l] != '=')
+ return 0;
+
+ if (*value)
+ return -EINVAL;
+
+ a = *p + l + 1;
+ } else
+ a = *p;
+
+ while (*a != ';' && *a != ',' && *a != 0) {
+ char c;
+
+ if (*a == '%') {
+ int x, y;
+
+ x = unhexchar(a[1]);
+ if (x < 0) {
+ free(r);
+ return x;
+ }
+
+ y = unhexchar(a[2]);
+ if (y < 0) {
+ free(r);
+ return y;
+ }
+
+ c = (char) ((x << 4) | y);
+ a += 3;
+ } else {
+ c = *a;
+ a++;
+ }
+
+ if (!GREEDY_REALLOC(r, allocated, n + 2))
+ return -ENOMEM;
+
+ r[n++] = c;
+ }
+
+ if (!r) {
+ r = strdup("");
+ if (!r)
+ return -ENOMEM;
+ } else
+ r[n] = 0;
+
+ if (*a == ',')
+ a++;
+
+ *p = a;
+
+ free(*value);
+ *value = r;
+
+ return 1;
+}
+
+static void skip_address_key(const char **p) {
+ assert(p);
+ assert(*p);
+
+ *p += strcspn(*p, ",");
+
+ if (**p == ',')
+ (*p)++;
+}
+
+static int parse_unix_address(sd_bus *b, const char **p, char **guid) {
+ _cleanup_free_ char *path = NULL, *abstract = NULL;
+ size_t l;
+ int r;
+
+ assert(b);
+ assert(p);
+ assert(*p);
+ assert(guid);
+
+ while (**p != 0 && **p != ';') {
+ r = parse_address_key(p, "guid", guid);
+ if (r < 0)
+ return r;
+ else if (r > 0)
+ continue;
+
+ r = parse_address_key(p, "path", &path);
+ if (r < 0)
+ return r;
+ else if (r > 0)
+ continue;
+
+ r = parse_address_key(p, "abstract", &abstract);
+ if (r < 0)
+ return r;
+ else if (r > 0)
+ continue;
+
+ skip_address_key(p);
+ }
+
+ if (!path && !abstract)
+ return -EINVAL;
+
+ if (path && abstract)
+ return -EINVAL;
+
+ if (path) {
+ l = strlen(path);
+ if (l > sizeof(b->sockaddr.un.sun_path))
+ return -E2BIG;
+
+ b->sockaddr.un.sun_family = AF_UNIX;
+ strncpy(b->sockaddr.un.sun_path, path, sizeof(b->sockaddr.un.sun_path));
+ b->sockaddr_size = offsetof(struct sockaddr_un, sun_path) + l;
+ } else if (abstract) {
+ l = strlen(abstract);
+ if (l > sizeof(b->sockaddr.un.sun_path) - 1)
+ return -E2BIG;
+
+ b->sockaddr.un.sun_family = AF_UNIX;
+ b->sockaddr.un.sun_path[0] = 0;
+ strncpy(b->sockaddr.un.sun_path+1, abstract, sizeof(b->sockaddr.un.sun_path)-1);
+ b->sockaddr_size = offsetof(struct sockaddr_un, sun_path) + 1 + l;
+ }
+
+ return 0;
+}
+
+static int parse_tcp_address(sd_bus *b, const char **p, char **guid) {
+ _cleanup_free_ char *host = NULL, *port = NULL, *family = NULL;
+ int r;
+ struct addrinfo *result, hints = {
+ .ai_socktype = SOCK_STREAM,
+ .ai_flags = AI_ADDRCONFIG,
+ };
+
+ assert(b);
+ assert(p);
+ assert(*p);
+ assert(guid);
+
+ while (**p != 0 && **p != ';') {
+ r = parse_address_key(p, "guid", guid);
+ if (r < 0)
+ return r;
+ else if (r > 0)
+ continue;
+
+ r = parse_address_key(p, "host", &host);
+ if (r < 0)
+ return r;
+ else if (r > 0)
+ continue;
+
+ r = parse_address_key(p, "port", &port);
+ if (r < 0)
+ return r;
+ else if (r > 0)
+ continue;
+
+ r = parse_address_key(p, "family", &family);
+ if (r < 0)
+ return r;
+ else if (r > 0)
+ continue;
+
+ skip_address_key(p);
+ }
+
+ if (!host || !port)
+ return -EINVAL;
+
+ if (family) {
+ if (streq(family, "ipv4"))
+ hints.ai_family = AF_INET;
+ else if (streq(family, "ipv6"))
+ hints.ai_family = AF_INET6;
+ else
+ return -EINVAL;
+ }
+
+ r = getaddrinfo(host, port, &hints, &result);
+ if (r == EAI_SYSTEM)
+ return -errno;
+ else if (r != 0)
+ return -EADDRNOTAVAIL;
+
+ memcpy(&b->sockaddr, result->ai_addr, result->ai_addrlen);
+ b->sockaddr_size = result->ai_addrlen;
+
+ freeaddrinfo(result);
+
+ return 0;
+}
+
+static int parse_exec_address(sd_bus *b, const char **p, char **guid) {
+ char *path = NULL;
+ unsigned n_argv = 0, j;
+ char **argv = NULL;
+ size_t allocated = 0;
+ int r;
+
+ assert(b);
+ assert(p);
+ assert(*p);
+ assert(guid);
+
+ while (**p != 0 && **p != ';') {
+ r = parse_address_key(p, "guid", guid);
+ if (r < 0)
+ goto fail;
+ else if (r > 0)
+ continue;
+
+ r = parse_address_key(p, "path", &path);
+ if (r < 0)
+ goto fail;
+ else if (r > 0)
+ continue;
+
+ if (startswith(*p, "argv")) {
+ unsigned ul;
+
+ errno = 0;
+ ul = strtoul(*p + 4, (char**) p, 10);
+ if (errno > 0 || **p != '=' || ul > 256) {
+ r = -EINVAL;
+ goto fail;
+ }
+
+ (*p)++;
+
+ if (ul >= n_argv) {
+ if (!GREEDY_REALLOC0(argv, allocated, ul + 2)) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ n_argv = ul + 1;
+ }
+
+ r = parse_address_key(p, NULL, argv + ul);
+ if (r < 0)
+ goto fail;
+
+ continue;
+ }
+
+ skip_address_key(p);
+ }
+
+ if (!path) {
+ r = -EINVAL;
+ goto fail;
+ }
+
+ /* Make sure there are no holes in the array, with the
+ * exception of argv[0] */
+ for (j = 1; j < n_argv; j++)
+ if (!argv[j]) {
+ r = -EINVAL;
+ goto fail;
+ }
+
+ if (argv && argv[0] == NULL) {
+ argv[0] = strdup(path);
+ if (!argv[0]) {
+ r = -ENOMEM;
+ goto fail;
+ }
+ }
+
+ b->exec_path = path;
+ b->exec_argv = argv;
+ return 0;
+
+fail:
+ for (j = 0; j < n_argv; j++)
+ free(argv[j]);
+
+ free(argv);
+ free(path);
+ return r;
+}
+
+static int parse_kernel_address(sd_bus *b, const char **p, char **guid) {
+ _cleanup_free_ char *path = NULL;
+ int r;
+
+ assert(b);
+ assert(p);
+ assert(*p);
+ assert(guid);
+
+ while (**p != 0 && **p != ';') {
+ r = parse_address_key(p, "guid", guid);
+ if (r < 0)
+ return r;
+ else if (r > 0)
+ continue;
+
+ r = parse_address_key(p, "path", &path);
+ if (r < 0)
+ return r;
+ else if (r > 0)
+ continue;
+
+ skip_address_key(p);
+ }
+
+ if (!path)
+ return -EINVAL;
+
+ free(b->kernel);
+ b->kernel = path;
+ path = NULL;
+
+ return 0;
+}
+
+static int parse_container_unix_address(sd_bus *b, const char **p, char **guid) {
+ _cleanup_free_ char *machine = NULL, *pid = NULL;
+ int r;
+
+ assert(b);
+ assert(p);
+ assert(*p);
+ assert(guid);
+
+ while (**p != 0 && **p != ';') {
+ r = parse_address_key(p, "guid", guid);
+ if (r < 0)
+ return r;
+ else if (r > 0)
+ continue;
+
+ r = parse_address_key(p, "machine", &machine);
+ if (r < 0)
+ return r;
+ else if (r > 0)
+ continue;
+
+ r = parse_address_key(p, "pid", &pid);
+ if (r < 0)
+ return r;
+ else if (r > 0)
+ continue;
+
+ skip_address_key(p);
+ }
+
+ if (!machine == !pid)
+ return -EINVAL;
+
+ if (machine) {
+ if (!machine_name_is_valid(machine))
+ return -EINVAL;
+
+ free(b->machine);
+ b->machine = machine;
+ machine = NULL;
+ } else {
+ b->machine = mfree(b->machine);
+ }
+
+ if (pid) {
+ r = parse_pid(pid, &b->nspid);
+ if (r < 0)
+ return r;
+ } else
+ b->nspid = 0;
+
+ b->sockaddr.un.sun_family = AF_UNIX;
+ strncpy(b->sockaddr.un.sun_path, "/var/run/dbus/system_bus_socket", sizeof(b->sockaddr.un.sun_path));
+ b->sockaddr_size = SOCKADDR_UN_LEN(b->sockaddr.un);
+
+ return 0;
+}
+
+static int parse_container_kernel_address(sd_bus *b, const char **p, char **guid) {
+ _cleanup_free_ char *machine = NULL, *pid = NULL;
+ int r;
+
+ assert(b);
+ assert(p);
+ assert(*p);
+ assert(guid);
+
+ while (**p != 0 && **p != ';') {
+ r = parse_address_key(p, "guid", guid);
+ if (r < 0)
+ return r;
+ else if (r > 0)
+ continue;
+
+ r = parse_address_key(p, "machine", &machine);
+ if (r < 0)
+ return r;
+ else if (r > 0)
+ continue;
+
+ r = parse_address_key(p, "pid", &pid);
+ if (r < 0)
+ return r;
+ else if (r > 0)
+ continue;
+
+ skip_address_key(p);
+ }
+
+ if (!machine == !pid)
+ return -EINVAL;
+
+ if (machine) {
+ if (!machine_name_is_valid(machine))
+ return -EINVAL;
+
+ free(b->machine);
+ b->machine = machine;
+ machine = NULL;
+ } else {
+ b->machine = mfree(b->machine);
+ }
+
+ if (pid) {
+ r = parse_pid(pid, &b->nspid);
+ if (r < 0)
+ return r;
+ } else
+ b->nspid = 0;
+
+ r = free_and_strdup(&b->kernel, "/sys/fs/kdbus/0-system/bus");
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+static void bus_reset_parsed_address(sd_bus *b) {
+ assert(b);
+
+ zero(b->sockaddr);
+ b->sockaddr_size = 0;
+ b->exec_argv = strv_free(b->exec_argv);
+ b->exec_path = mfree(b->exec_path);
+ b->server_id = SD_ID128_NULL;
+ b->kernel = mfree(b->kernel);
+ b->machine = mfree(b->machine);
+ b->nspid = 0;
+}
+
+static int bus_parse_next_address(sd_bus *b) {
+ _cleanup_free_ char *guid = NULL;
+ const char *a;
+ int r;
+
+ assert(b);
+
+ if (!b->address)
+ return 0;
+ if (b->address[b->address_index] == 0)
+ return 0;
+
+ bus_reset_parsed_address(b);
+
+ a = b->address + b->address_index;
+
+ while (*a != 0) {
+
+ if (*a == ';') {
+ a++;
+ continue;
+ }
+
+ if (startswith(a, "unix:")) {
+ a += 5;
+
+ r = parse_unix_address(b, &a, &guid);
+ if (r < 0)
+ return r;
+ break;
+
+ } else if (startswith(a, "tcp:")) {
+
+ a += 4;
+ r = parse_tcp_address(b, &a, &guid);
+ if (r < 0)
+ return r;
+
+ break;
+
+ } else if (startswith(a, "unixexec:")) {
+
+ a += 9;
+ r = parse_exec_address(b, &a, &guid);
+ if (r < 0)
+ return r;
+
+ break;
+
+ } else if (startswith(a, "kernel:")) {
+
+ a += 7;
+ r = parse_kernel_address(b, &a, &guid);
+ if (r < 0)
+ return r;
+
+ break;
+ } else if (startswith(a, "x-machine-unix:")) {
+
+ a += 15;
+ r = parse_container_unix_address(b, &a, &guid);
+ if (r < 0)
+ return r;
+
+ break;
+ } else if (startswith(a, "x-machine-kernel:")) {
+
+ a += 17;
+ r = parse_container_kernel_address(b, &a, &guid);
+ if (r < 0)
+ return r;
+
+ break;
+ }
+
+ a = strchr(a, ';');
+ if (!a)
+ return 0;
+ }
+
+ if (guid) {
+ r = sd_id128_from_string(guid, &b->server_id);
+ if (r < 0)
+ return r;
+ }
+
+ b->address_index = a - b->address;
+ return 1;
+}
+
+static int bus_start_address(sd_bus *b) {
+ bool container_kdbus_available = false;
+ bool kdbus_available = false;
+ int r;
+
+ assert(b);
+
+ for (;;) {
+ bool skipped = false;
+
+ bus_close_fds(b);
+
+ /*
+ * Usually, if you provide multiple different bus-addresses, we
+ * try all of them in order. We use the first one that
+ * succeeds. However, if you mix kernel and unix addresses, we
+ * never try unix-addresses if a previous kernel address was
+ * tried and kdbus was available. This is required to prevent
+ * clients to fallback to the bus-proxy if kdbus is available
+ * but failed (eg., too many connections).
+ */
+
+ if (b->exec_path)
+ r = bus_socket_exec(b);
+ else if ((b->nspid > 0 || b->machine) && b->kernel) {
+ r = bus_container_connect_kernel(b);
+ if (r < 0 && !IN_SET(r, -ENOENT, -ESOCKTNOSUPPORT))
+ container_kdbus_available = true;
+
+ } else if ((b->nspid > 0 || b->machine) && b->sockaddr.sa.sa_family != AF_UNSPEC) {
+ if (!container_kdbus_available)
+ r = bus_container_connect_socket(b);
+ else
+ skipped = true;
+
+ } else if (b->kernel) {
+ r = bus_kernel_connect(b);
+ if (r < 0 && !IN_SET(r, -ENOENT, -ESOCKTNOSUPPORT))
+ kdbus_available = true;
+
+ } else if (b->sockaddr.sa.sa_family != AF_UNSPEC) {
+ if (!kdbus_available)
+ r = bus_socket_connect(b);
+ else
+ skipped = true;
+ } else
+ skipped = true;
+
+ if (!skipped) {
+ if (r >= 0) {
+ r = attach_io_events(b);
+ if (r >= 0)
+ return r;
+ }
+
+ b->last_connect_error = -r;
+ }
+
+ r = bus_parse_next_address(b);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return b->last_connect_error ? -b->last_connect_error : -ECONNREFUSED;
+ }
+}
+
+int bus_next_address(sd_bus *b) {
+ assert(b);
+
+ bus_reset_parsed_address(b);
+ return bus_start_address(b);
+}
+
+static int bus_start_fd(sd_bus *b) {
+ struct stat st;
+ int r;
+
+ assert(b);
+ assert(b->input_fd >= 0);
+ assert(b->output_fd >= 0);
+
+ r = fd_nonblock(b->input_fd, true);
+ if (r < 0)
+ return r;
+
+ r = fd_cloexec(b->input_fd, true);
+ if (r < 0)
+ return r;
+
+ if (b->input_fd != b->output_fd) {
+ r = fd_nonblock(b->output_fd, true);
+ if (r < 0)
+ return r;
+
+ r = fd_cloexec(b->output_fd, true);
+ if (r < 0)
+ return r;
+ }
+
+ if (fstat(b->input_fd, &st) < 0)
+ return -errno;
+
+ if (S_ISCHR(b->input_fd))
+ return bus_kernel_take_fd(b);
+ else
+ return bus_socket_take_fd(b);
+}
+
+_public_ int sd_bus_start(sd_bus *bus) {
+ int r;
+
+ assert_return(bus, -EINVAL);
+ assert_return(bus->state == BUS_UNSET, -EPERM);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ bus->state = BUS_OPENING;
+
+ if (bus->is_server && bus->bus_client)
+ return -EINVAL;
+
+ if (bus->input_fd >= 0)
+ r = bus_start_fd(bus);
+ else if (bus->address || bus->sockaddr.sa.sa_family != AF_UNSPEC || bus->exec_path || bus->kernel || bus->machine)
+ r = bus_start_address(bus);
+ else
+ return -EINVAL;
+
+ if (r < 0) {
+ sd_bus_close(bus);
+ return r;
+ }
+
+ return bus_send_hello(bus);
+}
+
+_public_ int sd_bus_open(sd_bus **ret) {
+ const char *e;
+ sd_bus *b;
+ int r;
+
+ assert_return(ret, -EINVAL);
+
+ /* Let's connect to the starter bus if it is set, and
+ * otherwise to the bus that is appropropriate for the scope
+ * we are running in */
+
+ e = secure_getenv("DBUS_STARTER_BUS_TYPE");
+ if (e) {
+ if (streq(e, "system"))
+ return sd_bus_open_system(ret);
+ else if (STR_IN_SET(e, "session", "user"))
+ return sd_bus_open_user(ret);
+ }
+
+ e = secure_getenv("DBUS_STARTER_ADDRESS");
+ if (!e) {
+ if (cg_pid_get_owner_uid(0, NULL) >= 0)
+ return sd_bus_open_user(ret);
+ else
+ return sd_bus_open_system(ret);
+ }
+
+ r = sd_bus_new(&b);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_set_address(b, e);
+ if (r < 0)
+ goto fail;
+
+ b->bus_client = true;
+
+ /* We don't know whether the bus is trusted or not, so better
+ * be safe, and authenticate everything */
+ b->trusted = false;
+ b->attach_flags |= KDBUS_ATTACH_CAPS | KDBUS_ATTACH_CREDS;
+ b->creds_mask |= SD_BUS_CREDS_UID | SD_BUS_CREDS_EUID | SD_BUS_CREDS_EFFECTIVE_CAPS;
+
+ r = sd_bus_start(b);
+ if (r < 0)
+ goto fail;
+
+ *ret = b;
+ return 0;
+
+fail:
+ bus_free(b);
+ return r;
+}
+
+int bus_set_address_system(sd_bus *b) {
+ const char *e;
+ assert(b);
+
+ e = secure_getenv("DBUS_SYSTEM_BUS_ADDRESS");
+ if (e)
+ return sd_bus_set_address(b, e);
+
+ return sd_bus_set_address(b, DEFAULT_SYSTEM_BUS_ADDRESS);
+}
+
+_public_ int sd_bus_open_system(sd_bus **ret) {
+ sd_bus *b;
+ int r;
+
+ assert_return(ret, -EINVAL);
+
+ r = sd_bus_new(&b);
+ if (r < 0)
+ return r;
+
+ r = bus_set_address_system(b);
+ if (r < 0)
+ goto fail;
+
+ b->bus_client = true;
+ b->is_system = true;
+
+ /* Let's do per-method access control on the system bus. We
+ * need the caller's UID and capability set for that. */
+ b->trusted = false;
+ b->attach_flags |= KDBUS_ATTACH_CAPS | KDBUS_ATTACH_CREDS;
+ b->creds_mask |= SD_BUS_CREDS_UID | SD_BUS_CREDS_EUID | SD_BUS_CREDS_EFFECTIVE_CAPS;
+
+ r = sd_bus_start(b);
+ if (r < 0)
+ goto fail;
+
+ *ret = b;
+ return 0;
+
+fail:
+ bus_free(b);
+ return r;
+}
+
+int bus_set_address_user(sd_bus *b) {
+ const char *e;
+ uid_t uid;
+ int r;
+
+ assert(b);
+
+ e = secure_getenv("DBUS_SESSION_BUS_ADDRESS");
+ if (e)
+ return sd_bus_set_address(b, e);
+
+ r = cg_pid_get_owner_uid(0, &uid);
+ if (r < 0)
+ uid = getuid();
+
+ e = secure_getenv("XDG_RUNTIME_DIR");
+ if (e) {
+ _cleanup_free_ char *ee = NULL;
+
+ ee = bus_address_escape(e);
+ if (!ee)
+ return -ENOMEM;
+
+ (void) asprintf(&b->address, KERNEL_USER_BUS_ADDRESS_FMT ";" UNIX_USER_BUS_ADDRESS_FMT, uid, ee);
+ } else
+ (void) asprintf(&b->address, KERNEL_USER_BUS_ADDRESS_FMT, uid);
+
+ if (!b->address)
+ return -ENOMEM;
+
+ return 0;
+}
+
+_public_ int sd_bus_open_user(sd_bus **ret) {
+ sd_bus *b;
+ int r;
+
+ assert_return(ret, -EINVAL);
+
+ r = sd_bus_new(&b);
+ if (r < 0)
+ return r;
+
+ r = bus_set_address_user(b);
+ if (r < 0)
+ return r;
+
+ b->bus_client = true;
+ b->is_user = true;
+
+ /* We don't do any per-method access control on the user
+ * bus. */
+ b->trusted = true;
+
+ r = sd_bus_start(b);
+ if (r < 0)
+ goto fail;
+
+ *ret = b;
+ return 0;
+
+fail:
+ bus_free(b);
+ return r;
+}
+
+int bus_set_address_system_remote(sd_bus *b, const char *host) {
+ _cleanup_free_ char *e = NULL;
+ char *m = NULL, *c = NULL;
+
+ assert(b);
+ assert(host);
+
+ /* Let's see if we shall enter some container */
+ m = strchr(host, ':');
+ if (m) {
+ m++;
+
+ /* Let's make sure this is not a port of some kind,
+ * and is a valid machine name. */
+ if (!in_charset(m, "0123456789") && machine_name_is_valid(m)) {
+ char *t;
+
+ /* Cut out the host part */
+ t = strndupa(host, m - host - 1);
+ e = bus_address_escape(t);
+ if (!e)
+ return -ENOMEM;
+
+ c = strjoina(",argv4=--machine=", m);
+ }
+ }
+
+ if (!e) {
+ e = bus_address_escape(host);
+ if (!e)
+ return -ENOMEM;
+ }
+
+ b->address = strjoin("unixexec:path=ssh,argv1=-xT,argv2=", e, ",argv3=systemd-stdio-bridge", c, NULL);
+ if (!b->address)
+ return -ENOMEM;
+
+ return 0;
+ }
+
+_public_ int sd_bus_open_system_remote(sd_bus **ret, const char *host) {
+ sd_bus *bus;
+ int r;
+
+ assert_return(host, -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ r = sd_bus_new(&bus);
+ if (r < 0)
+ return r;
+
+ r = bus_set_address_system_remote(bus, host);
+ if (r < 0)
+ goto fail;
+
+ bus->bus_client = true;
+ bus->trusted = false;
+ bus->is_system = true;
+
+ r = sd_bus_start(bus);
+ if (r < 0)
+ goto fail;
+
+ *ret = bus;
+ return 0;
+
+fail:
+ bus_free(bus);
+ return r;
+}
+
+int bus_set_address_system_machine(sd_bus *b, const char *machine) {
+ _cleanup_free_ char *e = NULL;
+
+ assert(b);
+ assert(machine);
+
+ e = bus_address_escape(machine);
+ if (!e)
+ return -ENOMEM;
+
+ b->address = strjoin("x-machine-kernel:machine=", e, ";x-machine-unix:machine=", e, NULL);
+ if (!b->address)
+ return -ENOMEM;
+
+ return 0;
+}
+
+_public_ int sd_bus_open_system_machine(sd_bus **ret, const char *machine) {
+ sd_bus *bus;
+ int r;
+
+ assert_return(machine, -EINVAL);
+ assert_return(ret, -EINVAL);
+ assert_return(machine_name_is_valid(machine), -EINVAL);
+
+ r = sd_bus_new(&bus);
+ if (r < 0)
+ return r;
+
+ r = bus_set_address_system_machine(bus, machine);
+ if (r < 0)
+ goto fail;
+
+ bus->bus_client = true;
+ bus->trusted = false;
+ bus->is_system = true;
+
+ r = sd_bus_start(bus);
+ if (r < 0)
+ goto fail;
+
+ *ret = bus;
+ return 0;
+
+fail:
+ bus_free(bus);
+ return r;
+}
+
+_public_ void sd_bus_close(sd_bus *bus) {
+
+ if (!bus)
+ return;
+ if (bus->state == BUS_CLOSED)
+ return;
+ if (bus_pid_changed(bus))
+ return;
+
+ bus->state = BUS_CLOSED;
+
+ sd_bus_detach_event(bus);
+
+ /* Drop all queued messages so that they drop references to
+ * the bus object and the bus may be freed */
+ bus_reset_queues(bus);
+
+ if (!bus->is_kernel)
+ bus_close_fds(bus);
+
+ /* We'll leave the fd open in case this is a kernel bus, since
+ * there might still be memblocks around that reference this
+ * bus, and they might need to invoke the KDBUS_CMD_FREE
+ * ioctl on the fd when they are freed. */
+}
+
+_public_ sd_bus* sd_bus_flush_close_unref(sd_bus *bus) {
+
+ if (!bus)
+ return NULL;
+
+ sd_bus_flush(bus);
+ sd_bus_close(bus);
+
+ return sd_bus_unref(bus);
+}
+
+static void bus_enter_closing(sd_bus *bus) {
+ assert(bus);
+
+ if (bus->state != BUS_OPENING &&
+ bus->state != BUS_AUTHENTICATING &&
+ bus->state != BUS_HELLO &&
+ bus->state != BUS_RUNNING)
+ return;
+
+ bus->state = BUS_CLOSING;
+}
+
+_public_ sd_bus *sd_bus_ref(sd_bus *bus) {
+
+ if (!bus)
+ return NULL;
+
+ assert_se(REFCNT_INC(bus->n_ref) >= 2);
+
+ return bus;
+}
+
+_public_ sd_bus *sd_bus_unref(sd_bus *bus) {
+ unsigned i;
+
+ if (!bus)
+ return NULL;
+
+ i = REFCNT_DEC(bus->n_ref);
+ if (i > 0)
+ return NULL;
+
+ bus_free(bus);
+ return NULL;
+}
+
+_public_ int sd_bus_is_open(sd_bus *bus) {
+
+ assert_return(bus, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ return BUS_IS_OPEN(bus->state);
+}
+
+_public_ int sd_bus_can_send(sd_bus *bus, char type) {
+ int r;
+
+ assert_return(bus, -EINVAL);
+ assert_return(bus->state != BUS_UNSET, -ENOTCONN);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ if (bus->hello_flags & KDBUS_HELLO_MONITOR)
+ return 0;
+
+ if (type == SD_BUS_TYPE_UNIX_FD) {
+ if (!(bus->hello_flags & KDBUS_HELLO_ACCEPT_FD))
+ return 0;
+
+ r = bus_ensure_running(bus);
+ if (r < 0)
+ return r;
+
+ return bus->can_fds;
+ }
+
+ return bus_type_is_valid(type);
+}
+
+_public_ int sd_bus_get_bus_id(sd_bus *bus, sd_id128_t *id) {
+ int r;
+
+ assert_return(bus, -EINVAL);
+ assert_return(id, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ r = bus_ensure_running(bus);
+ if (r < 0)
+ return r;
+
+ *id = bus->server_id;
+ return 0;
+}
+
+static int bus_seal_message(sd_bus *b, sd_bus_message *m, usec_t timeout) {
+ assert(b);
+ assert(m);
+
+ if (m->sealed) {
+ /* If we copy the same message to multiple
+ * destinations, avoid using the same cookie
+ * numbers. */
+ b->cookie = MAX(b->cookie, BUS_MESSAGE_COOKIE(m));
+ return 0;
+ }
+
+ if (timeout == 0)
+ timeout = BUS_DEFAULT_TIMEOUT;
+
+ return bus_message_seal(m, ++b->cookie, timeout);
+}
+
+static int bus_remarshal_message(sd_bus *b, sd_bus_message **m) {
+ bool remarshal = false;
+
+ assert(b);
+
+ /* wrong packet version */
+ if (b->message_version != 0 && b->message_version != (*m)->header->version)
+ remarshal = true;
+
+ /* wrong packet endianness */
+ if (b->message_endian != 0 && b->message_endian != (*m)->header->endian)
+ remarshal = true;
+
+ /* TODO: kdbus-messages received from the kernel contain data which is
+ * not allowed to be passed to KDBUS_CMD_SEND. Therefore, we have to
+ * force remarshaling of the message. Technically, we could just
+ * recreate the kdbus message, but that is non-trivial as other parts of
+ * the message refer to m->kdbus already. This should be fixed! */
+ if ((*m)->kdbus && (*m)->release_kdbus)
+ remarshal = true;
+
+ return remarshal ? bus_message_remarshal(b, m) : 0;
+}
+
+int bus_seal_synthetic_message(sd_bus *b, sd_bus_message *m) {
+ assert(b);
+ assert(m);
+
+ /* Fake some timestamps, if they were requested, and not
+ * already initialized */
+ if (b->attach_flags & KDBUS_ATTACH_TIMESTAMP) {
+ if (m->realtime <= 0)
+ m->realtime = now(CLOCK_REALTIME);
+
+ if (m->monotonic <= 0)
+ m->monotonic = now(CLOCK_MONOTONIC);
+ }
+
+ /* The bus specification says the serial number cannot be 0,
+ * hence let's fill something in for synthetic messages. Since
+ * synthetic messages might have a fake sender and we don't
+ * want to interfere with the real sender's serial numbers we
+ * pick a fixed, artificial one. We use (uint32_t) -1 rather
+ * than (uint64_t) -1 since dbus1 only had 32bit identifiers,
+ * even though kdbus can do 64bit. */
+ return bus_message_seal(m, 0xFFFFFFFFULL, 0);
+}
+
+static int bus_write_message(sd_bus *bus, sd_bus_message *m, bool hint_sync_call, size_t *idx) {
+ int r;
+
+ assert(bus);
+ assert(m);
+
+ if (bus->is_kernel)
+ r = bus_kernel_write_message(bus, m, hint_sync_call);
+ else
+ r = bus_socket_write_message(bus, m, idx);
+
+ if (r <= 0)
+ return r;
+
+ if (bus->is_kernel || *idx >= BUS_MESSAGE_SIZE(m))
+ log_debug("Sent message type=%s sender=%s destination=%s object=%s interface=%s member=%s cookie=%" PRIu64 " reply_cookie=%" PRIu64 " error=%s",
+ bus_message_type_to_string(m->header->type),
+ strna(sd_bus_message_get_sender(m)),
+ strna(sd_bus_message_get_destination(m)),
+ strna(sd_bus_message_get_path(m)),
+ strna(sd_bus_message_get_interface(m)),
+ strna(sd_bus_message_get_member(m)),
+ BUS_MESSAGE_COOKIE(m),
+ m->reply_cookie,
+ strna(m->error.message));
+
+ return r;
+}
+
+static int dispatch_wqueue(sd_bus *bus) {
+ int r, ret = 0;
+
+ assert(bus);
+ assert(bus->state == BUS_RUNNING || bus->state == BUS_HELLO);
+
+ while (bus->wqueue_size > 0) {
+
+ r = bus_write_message(bus, bus->wqueue[0], false, &bus->windex);
+ if (r < 0)
+ return r;
+ else if (r == 0)
+ /* Didn't do anything this time */
+ return ret;
+ else if (bus->is_kernel || bus->windex >= BUS_MESSAGE_SIZE(bus->wqueue[0])) {
+ /* Fully written. Let's drop the entry from
+ * the queue.
+ *
+ * This isn't particularly optimized, but
+ * well, this is supposed to be our worst-case
+ * buffer only, and the socket buffer is
+ * supposed to be our primary buffer, and if
+ * it got full, then all bets are off
+ * anyway. */
+
+ bus->wqueue_size--;
+ sd_bus_message_unref(bus->wqueue[0]);
+ memmove(bus->wqueue, bus->wqueue + 1, sizeof(sd_bus_message*) * bus->wqueue_size);
+ bus->windex = 0;
+
+ ret = 1;
+ }
+ }
+
+ return ret;
+}
+
+static int bus_read_message(sd_bus *bus, bool hint_priority, int64_t priority) {
+ assert(bus);
+
+ if (bus->is_kernel)
+ return bus_kernel_read_message(bus, hint_priority, priority);
+ else
+ return bus_socket_read_message(bus);
+}
+
+int bus_rqueue_make_room(sd_bus *bus) {
+ assert(bus);
+
+ if (bus->rqueue_size >= BUS_RQUEUE_MAX)
+ return -ENOBUFS;
+
+ if (!GREEDY_REALLOC(bus->rqueue, bus->rqueue_allocated, bus->rqueue_size + 1))
+ return -ENOMEM;
+
+ return 0;
+}
+
+static int dispatch_rqueue(sd_bus *bus, bool hint_priority, int64_t priority, sd_bus_message **m) {
+ int r, ret = 0;
+
+ assert(bus);
+ assert(m);
+ assert(bus->state == BUS_RUNNING || bus->state == BUS_HELLO);
+
+ /* Note that the priority logic is only available on kdbus,
+ * where the rqueue is unused. We check the rqueue here
+ * anyway, because it's simple... */
+
+ for (;;) {
+ if (bus->rqueue_size > 0) {
+ /* Dispatch a queued message */
+
+ *m = bus->rqueue[0];
+ bus->rqueue_size--;
+ memmove(bus->rqueue, bus->rqueue + 1, sizeof(sd_bus_message*) * bus->rqueue_size);
+ return 1;
+ }
+
+ /* Try to read a new message */
+ r = bus_read_message(bus, hint_priority, priority);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return ret;
+
+ ret = 1;
+ }
+}
+
+static int bus_send_internal(sd_bus *bus, sd_bus_message *_m, uint64_t *cookie, bool hint_sync_call) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = sd_bus_message_ref(_m);
+ int r;
+
+ assert_return(m, -EINVAL);
+
+ if (!bus)
+ bus = m->bus;
+
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+ assert_return(!bus->is_kernel || !(bus->hello_flags & KDBUS_HELLO_MONITOR), -EROFS);
+
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
+ if (m->n_fds > 0) {
+ r = sd_bus_can_send(bus, SD_BUS_TYPE_UNIX_FD);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return -EOPNOTSUPP;
+ }
+
+ /* If the cookie number isn't kept, then we know that no reply
+ * is expected */
+ if (!cookie && !m->sealed)
+ m->header->flags |= BUS_MESSAGE_NO_REPLY_EXPECTED;
+
+ r = bus_seal_message(bus, m, 0);
+ if (r < 0)
+ return r;
+
+ /* Remarshall if we have to. This will possibly unref the
+ * message and place a replacement in m */
+ r = bus_remarshal_message(bus, &m);
+ if (r < 0)
+ return r;
+
+ /* If this is a reply and no reply was requested, then let's
+ * suppress this, if we can */
+ if (m->dont_send)
+ goto finish;
+
+ if ((bus->state == BUS_RUNNING || bus->state == BUS_HELLO) && bus->wqueue_size <= 0) {
+ size_t idx = 0;
+
+ r = bus_write_message(bus, m, hint_sync_call, &idx);
+ if (r < 0) {
+ if (IN_SET(r, -ENOTCONN, -ECONNRESET, -EPIPE, -ESHUTDOWN)) {
+ bus_enter_closing(bus);
+ return -ECONNRESET;
+ }
+
+ return r;
+ }
+
+ if (!bus->is_kernel && idx < BUS_MESSAGE_SIZE(m)) {
+ /* Wasn't fully written. So let's remember how
+ * much was written. Note that the first entry
+ * of the wqueue array is always allocated so
+ * that we always can remember how much was
+ * written. */
+ bus->wqueue[0] = sd_bus_message_ref(m);
+ bus->wqueue_size = 1;
+ bus->windex = idx;
+ }
+
+ } else {
+ /* Just append it to the queue. */
+
+ if (bus->wqueue_size >= BUS_WQUEUE_MAX)
+ return -ENOBUFS;
+
+ if (!GREEDY_REALLOC(bus->wqueue, bus->wqueue_allocated, bus->wqueue_size + 1))
+ return -ENOMEM;
+
+ bus->wqueue[bus->wqueue_size++] = sd_bus_message_ref(m);
+ }
+
+finish:
+ if (cookie)
+ *cookie = BUS_MESSAGE_COOKIE(m);
+
+ return 1;
+}
+
+_public_ int sd_bus_send(sd_bus *bus, sd_bus_message *m, uint64_t *cookie) {
+ return bus_send_internal(bus, m, cookie, false);
+}
+
+_public_ int sd_bus_send_to(sd_bus *bus, sd_bus_message *m, const char *destination, uint64_t *cookie) {
+ int r;
+
+ assert_return(m, -EINVAL);
+
+ if (!bus)
+ bus = m->bus;
+
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
+ if (!streq_ptr(m->destination, destination)) {
+
+ if (!destination)
+ return -EEXIST;
+
+ r = sd_bus_message_set_destination(m, destination);
+ if (r < 0)
+ return r;
+ }
+
+ return sd_bus_send(bus, m, cookie);
+}
+
+static usec_t calc_elapse(uint64_t usec) {
+ if (usec == (uint64_t) -1)
+ return 0;
+
+ return now(CLOCK_MONOTONIC) + usec;
+}
+
+static int timeout_compare(const void *a, const void *b) {
+ const struct reply_callback *x = a, *y = b;
+
+ if (x->timeout != 0 && y->timeout == 0)
+ return -1;
+
+ if (x->timeout == 0 && y->timeout != 0)
+ return 1;
+
+ if (x->timeout < y->timeout)
+ return -1;
+
+ if (x->timeout > y->timeout)
+ return 1;
+
+ return 0;
+}
+
+_public_ int sd_bus_call_async(
+ sd_bus *bus,
+ sd_bus_slot **slot,
+ sd_bus_message *_m,
+ sd_bus_message_handler_t callback,
+ void *userdata,
+ uint64_t usec) {
+
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = sd_bus_message_ref(_m);
+ _cleanup_(sd_bus_slot_unrefp) sd_bus_slot *s = NULL;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL);
+ assert_return(!(m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED), -EINVAL);
+ assert_return(callback, -EINVAL);
+
+ if (!bus)
+ bus = m->bus;
+
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+ assert_return(!bus->is_kernel || !(bus->hello_flags & KDBUS_HELLO_MONITOR), -EROFS);
+
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
+ r = ordered_hashmap_ensure_allocated(&bus->reply_callbacks, &uint64_hash_ops);
+ if (r < 0)
+ return r;
+
+ r = prioq_ensure_allocated(&bus->reply_callbacks_prioq, timeout_compare);
+ if (r < 0)
+ return r;
+
+ r = bus_seal_message(bus, m, usec);
+ if (r < 0)
+ return r;
+
+ r = bus_remarshal_message(bus, &m);
+ if (r < 0)
+ return r;
+
+ s = bus_slot_allocate(bus, !slot, BUS_REPLY_CALLBACK, sizeof(struct reply_callback), userdata);
+ if (!s)
+ return -ENOMEM;
+
+ s->reply_callback.callback = callback;
+
+ s->reply_callback.cookie = BUS_MESSAGE_COOKIE(m);
+ r = ordered_hashmap_put(bus->reply_callbacks, &s->reply_callback.cookie, &s->reply_callback);
+ if (r < 0) {
+ s->reply_callback.cookie = 0;
+ return r;
+ }
+
+ s->reply_callback.timeout = calc_elapse(m->timeout);
+ if (s->reply_callback.timeout != 0) {
+ r = prioq_put(bus->reply_callbacks_prioq, &s->reply_callback, &s->reply_callback.prioq_idx);
+ if (r < 0) {
+ s->reply_callback.timeout = 0;
+ return r;
+ }
+ }
+
+ r = sd_bus_send(bus, m, &s->reply_callback.cookie);
+ if (r < 0)
+ return r;
+
+ if (slot)
+ *slot = s;
+ s = NULL;
+
+ return r;
+}
+
+int bus_ensure_running(sd_bus *bus) {
+ int r;
+
+ assert(bus);
+
+ if (bus->state == BUS_UNSET || bus->state == BUS_CLOSED || bus->state == BUS_CLOSING)
+ return -ENOTCONN;
+ if (bus->state == BUS_RUNNING)
+ return 1;
+
+ for (;;) {
+ r = sd_bus_process(bus, NULL);
+ if (r < 0)
+ return r;
+ if (bus->state == BUS_RUNNING)
+ return 1;
+ if (r > 0)
+ continue;
+
+ r = sd_bus_wait(bus, (uint64_t) -1);
+ if (r < 0)
+ return r;
+ }
+}
+
+_public_ int sd_bus_call(
+ sd_bus *bus,
+ sd_bus_message *_m,
+ uint64_t usec,
+ sd_bus_error *error,
+ sd_bus_message **reply) {
+
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = sd_bus_message_ref(_m);
+ usec_t timeout;
+ uint64_t cookie;
+ unsigned i;
+ int r;
+
+ bus_assert_return(m, -EINVAL, error);
+ bus_assert_return(m->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL, error);
+ bus_assert_return(!(m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED), -EINVAL, error);
+ bus_assert_return(!bus_error_is_dirty(error), -EINVAL, error);
+
+ if (!bus)
+ bus = m->bus;
+
+ bus_assert_return(!bus_pid_changed(bus), -ECHILD, error);
+ bus_assert_return(!bus->is_kernel || !(bus->hello_flags & KDBUS_HELLO_MONITOR), -EROFS, error);
+
+ if (!BUS_IS_OPEN(bus->state)) {
+ r = -ENOTCONN;
+ goto fail;
+ }
+
+ r = bus_ensure_running(bus);
+ if (r < 0)
+ goto fail;
+
+ i = bus->rqueue_size;
+
+ r = bus_seal_message(bus, m, usec);
+ if (r < 0)
+ goto fail;
+
+ r = bus_remarshal_message(bus, &m);
+ if (r < 0)
+ goto fail;
+
+ r = bus_send_internal(bus, m, &cookie, true);
+ if (r < 0)
+ goto fail;
+
+ timeout = calc_elapse(m->timeout);
+
+ for (;;) {
+ usec_t left;
+
+ while (i < bus->rqueue_size) {
+ sd_bus_message *incoming = NULL;
+
+ incoming = bus->rqueue[i];
+
+ if (incoming->reply_cookie == cookie) {
+ /* Found a match! */
+
+ memmove(bus->rqueue + i, bus->rqueue + i + 1, sizeof(sd_bus_message*) * (bus->rqueue_size - i - 1));
+ bus->rqueue_size--;
+ log_debug_bus_message(incoming);
+
+ if (incoming->header->type == SD_BUS_MESSAGE_METHOD_RETURN) {
+
+ if (incoming->n_fds <= 0 || (bus->hello_flags & KDBUS_HELLO_ACCEPT_FD)) {
+ if (reply)
+ *reply = incoming;
+ else
+ sd_bus_message_unref(incoming);
+
+ return 1;
+ }
+
+ r = sd_bus_error_setf(error, SD_BUS_ERROR_INCONSISTENT_MESSAGE, "Reply message contained file descriptors which I couldn't accept. Sorry.");
+ sd_bus_message_unref(incoming);
+ return r;
+
+ } else if (incoming->header->type == SD_BUS_MESSAGE_METHOD_ERROR) {
+ r = sd_bus_error_copy(error, &incoming->error);
+ sd_bus_message_unref(incoming);
+ return r;
+ } else {
+ r = -EIO;
+ goto fail;
+ }
+
+ } else if (BUS_MESSAGE_COOKIE(incoming) == cookie &&
+ bus->unique_name &&
+ incoming->sender &&
+ streq(bus->unique_name, incoming->sender)) {
+
+ memmove(bus->rqueue + i, bus->rqueue + i + 1, sizeof(sd_bus_message*) * (bus->rqueue_size - i - 1));
+ bus->rqueue_size--;
+
+ /* Our own message? Somebody is trying
+ * to send its own client a message,
+ * let's not dead-lock, let's fail
+ * immediately. */
+
+ sd_bus_message_unref(incoming);
+ r = -ELOOP;
+ goto fail;
+ }
+
+ /* Try to read more, right-away */
+ i++;
+ }
+
+ r = bus_read_message(bus, false, 0);
+ if (r < 0) {
+ if (IN_SET(r, -ENOTCONN, -ECONNRESET, -EPIPE, -ESHUTDOWN)) {
+ bus_enter_closing(bus);
+ r = -ECONNRESET;
+ }
+
+ goto fail;
+ }
+ if (r > 0)
+ continue;
+
+ if (timeout > 0) {
+ usec_t n;
+
+ n = now(CLOCK_MONOTONIC);
+ if (n >= timeout) {
+ r = -ETIMEDOUT;
+ goto fail;
+ }
+
+ left = timeout - n;
+ } else
+ left = (uint64_t) -1;
+
+ r = bus_poll(bus, true, left);
+ if (r < 0)
+ goto fail;
+ if (r == 0) {
+ r = -ETIMEDOUT;
+ goto fail;
+ }
+
+ r = dispatch_wqueue(bus);
+ if (r < 0) {
+ if (IN_SET(r, -ENOTCONN, -ECONNRESET, -EPIPE, -ESHUTDOWN)) {
+ bus_enter_closing(bus);
+ r = -ECONNRESET;
+ }
+
+ goto fail;
+ }
+ }
+
+fail:
+ return sd_bus_error_set_errno(error, r);
+}
+
+_public_ int sd_bus_get_fd(sd_bus *bus) {
+
+ assert_return(bus, -EINVAL);
+ assert_return(bus->input_fd == bus->output_fd, -EPERM);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ return bus->input_fd;
+}
+
+_public_ int sd_bus_get_events(sd_bus *bus) {
+ int flags = 0;
+
+ assert_return(bus, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ if (!BUS_IS_OPEN(bus->state) && bus->state != BUS_CLOSING)
+ return -ENOTCONN;
+
+ if (bus->state == BUS_OPENING)
+ flags |= POLLOUT;
+ else if (bus->state == BUS_AUTHENTICATING) {
+
+ if (bus_socket_auth_needs_write(bus))
+ flags |= POLLOUT;
+
+ flags |= POLLIN;
+
+ } else if (bus->state == BUS_RUNNING || bus->state == BUS_HELLO) {
+ if (bus->rqueue_size <= 0)
+ flags |= POLLIN;
+ if (bus->wqueue_size > 0)
+ flags |= POLLOUT;
+ }
+
+ return flags;
+}
+
+_public_ int sd_bus_get_timeout(sd_bus *bus, uint64_t *timeout_usec) {
+ struct reply_callback *c;
+
+ assert_return(bus, -EINVAL);
+ assert_return(timeout_usec, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ if (!BUS_IS_OPEN(bus->state) && bus->state != BUS_CLOSING)
+ return -ENOTCONN;
+
+ if (bus->track_queue) {
+ *timeout_usec = 0;
+ return 1;
+ }
+
+ if (bus->state == BUS_CLOSING) {
+ *timeout_usec = 0;
+ return 1;
+ }
+
+ if (bus->state == BUS_AUTHENTICATING) {
+ *timeout_usec = bus->auth_timeout;
+ return 1;
+ }
+
+ if (bus->state != BUS_RUNNING && bus->state != BUS_HELLO) {
+ *timeout_usec = (uint64_t) -1;
+ return 0;
+ }
+
+ if (bus->rqueue_size > 0) {
+ *timeout_usec = 0;
+ return 1;
+ }
+
+ c = prioq_peek(bus->reply_callbacks_prioq);
+ if (!c) {
+ *timeout_usec = (uint64_t) -1;
+ return 0;
+ }
+
+ if (c->timeout == 0) {
+ *timeout_usec = (uint64_t) -1;
+ return 0;
+ }
+
+ *timeout_usec = c->timeout;
+ return 1;
+}
+
+static int process_timeout(sd_bus *bus) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error_buffer = SD_BUS_ERROR_NULL;
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message* m = NULL;
+ struct reply_callback *c;
+ sd_bus_slot *slot;
+ usec_t n;
+ int r;
+
+ assert(bus);
+
+ c = prioq_peek(bus->reply_callbacks_prioq);
+ if (!c)
+ return 0;
+
+ n = now(CLOCK_MONOTONIC);
+ if (c->timeout > n)
+ return 0;
+
+ r = bus_message_new_synthetic_error(
+ bus,
+ c->cookie,
+ &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_NO_REPLY, "Method call timed out"),
+ &m);
+ if (r < 0)
+ return r;
+
+ r = bus_seal_synthetic_message(bus, m);
+ if (r < 0)
+ return r;
+
+ assert_se(prioq_pop(bus->reply_callbacks_prioq) == c);
+ c->timeout = 0;
+
+ ordered_hashmap_remove(bus->reply_callbacks, &c->cookie);
+ c->cookie = 0;
+
+ slot = container_of(c, sd_bus_slot, reply_callback);
+
+ bus->iteration_counter++;
+
+ bus->current_message = m;
+ bus->current_slot = sd_bus_slot_ref(slot);
+ bus->current_handler = c->callback;
+ bus->current_userdata = slot->userdata;
+ r = c->callback(m, slot->userdata, &error_buffer);
+ bus->current_userdata = NULL;
+ bus->current_handler = NULL;
+ bus->current_slot = NULL;
+ bus->current_message = NULL;
+
+ if (slot->floating) {
+ bus_slot_disconnect(slot);
+ sd_bus_slot_unref(slot);
+ }
+
+ sd_bus_slot_unref(slot);
+
+ return bus_maybe_reply_error(m, r, &error_buffer);
+}
+
+static int process_hello(sd_bus *bus, sd_bus_message *m) {
+ assert(bus);
+ assert(m);
+
+ if (bus->state != BUS_HELLO)
+ return 0;
+
+ /* Let's make sure the first message on the bus is the HELLO
+ * reply. But note that we don't actually parse the message
+ * here (we leave that to the usual handling), we just verify
+ * we don't let any earlier msg through. */
+
+ if (m->header->type != SD_BUS_MESSAGE_METHOD_RETURN &&
+ m->header->type != SD_BUS_MESSAGE_METHOD_ERROR)
+ return -EIO;
+
+ if (m->reply_cookie != 1)
+ return -EIO;
+
+ return 0;
+}
+
+static int process_reply(sd_bus *bus, sd_bus_message *m) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *synthetic_reply = NULL;
+ _cleanup_(sd_bus_error_free) sd_bus_error error_buffer = SD_BUS_ERROR_NULL;
+ struct reply_callback *c;
+ sd_bus_slot *slot;
+ int r;
+
+ assert(bus);
+ assert(m);
+
+ if (m->header->type != SD_BUS_MESSAGE_METHOD_RETURN &&
+ m->header->type != SD_BUS_MESSAGE_METHOD_ERROR)
+ return 0;
+
+ if (bus->is_kernel && (bus->hello_flags & KDBUS_HELLO_MONITOR))
+ return 0;
+
+ if (m->destination && bus->unique_name && !streq_ptr(m->destination, bus->unique_name))
+ return 0;
+
+ c = ordered_hashmap_remove(bus->reply_callbacks, &m->reply_cookie);
+ if (!c)
+ return 0;
+
+ c->cookie = 0;
+
+ slot = container_of(c, sd_bus_slot, reply_callback);
+
+ if (m->n_fds > 0 && !(bus->hello_flags & KDBUS_HELLO_ACCEPT_FD)) {
+
+ /* If the reply contained a file descriptor which we
+ * didn't want we pass an error instead. */
+
+ r = bus_message_new_synthetic_error(
+ bus,
+ m->reply_cookie,
+ &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_INCONSISTENT_MESSAGE, "Reply message contained file descriptor"),
+ &synthetic_reply);
+ if (r < 0)
+ return r;
+
+ /* Copy over original timestamp */
+ synthetic_reply->realtime = m->realtime;
+ synthetic_reply->monotonic = m->monotonic;
+ synthetic_reply->seqnum = m->seqnum;
+
+ r = bus_seal_synthetic_message(bus, synthetic_reply);
+ if (r < 0)
+ return r;
+
+ m = synthetic_reply;
+ } else {
+ r = sd_bus_message_rewind(m, true);
+ if (r < 0)
+ return r;
+ }
+
+ if (c->timeout != 0) {
+ prioq_remove(bus->reply_callbacks_prioq, c, &c->prioq_idx);
+ c->timeout = 0;
+ }
+
+ bus->current_slot = sd_bus_slot_ref(slot);
+ bus->current_handler = c->callback;
+ bus->current_userdata = slot->userdata;
+ r = c->callback(m, slot->userdata, &error_buffer);
+ bus->current_userdata = NULL;
+ bus->current_handler = NULL;
+ bus->current_slot = NULL;
+
+ if (slot->floating) {
+ bus_slot_disconnect(slot);
+ sd_bus_slot_unref(slot);
+ }
+
+ sd_bus_slot_unref(slot);
+
+ return bus_maybe_reply_error(m, r, &error_buffer);
+}
+
+static int process_filter(sd_bus *bus, sd_bus_message *m) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error_buffer = SD_BUS_ERROR_NULL;
+ struct filter_callback *l;
+ int r;
+
+ assert(bus);
+ assert(m);
+
+ do {
+ bus->filter_callbacks_modified = false;
+
+ LIST_FOREACH(callbacks, l, bus->filter_callbacks) {
+ sd_bus_slot *slot;
+
+ if (bus->filter_callbacks_modified)
+ break;
+
+ /* Don't run this more than once per iteration */
+ if (l->last_iteration == bus->iteration_counter)
+ continue;
+
+ l->last_iteration = bus->iteration_counter;
+
+ r = sd_bus_message_rewind(m, true);
+ if (r < 0)
+ return r;
+
+ slot = container_of(l, sd_bus_slot, filter_callback);
+
+ bus->current_slot = sd_bus_slot_ref(slot);
+ bus->current_handler = l->callback;
+ bus->current_userdata = slot->userdata;
+ r = l->callback(m, slot->userdata, &error_buffer);
+ bus->current_userdata = NULL;
+ bus->current_handler = NULL;
+ bus->current_slot = sd_bus_slot_unref(slot);
+
+ r = bus_maybe_reply_error(m, r, &error_buffer);
+ if (r != 0)
+ return r;
+
+ }
+
+ } while (bus->filter_callbacks_modified);
+
+ return 0;
+}
+
+static int process_match(sd_bus *bus, sd_bus_message *m) {
+ int r;
+
+ assert(bus);
+ assert(m);
+
+ do {
+ bus->match_callbacks_modified = false;
+
+ r = bus_match_run(bus, &bus->match_callbacks, m);
+ if (r != 0)
+ return r;
+
+ } while (bus->match_callbacks_modified);
+
+ return 0;
+}
+
+static int process_builtin(sd_bus *bus, sd_bus_message *m) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ int r;
+
+ assert(bus);
+ assert(m);
+
+ if (bus->hello_flags & KDBUS_HELLO_MONITOR)
+ return 0;
+
+ if (bus->manual_peer_interface)
+ return 0;
+
+ if (m->header->type != SD_BUS_MESSAGE_METHOD_CALL)
+ return 0;
+
+ if (!streq_ptr(m->interface, "org.freedesktop.DBus.Peer"))
+ return 0;
+
+ if (m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED)
+ return 1;
+
+ if (streq_ptr(m->member, "Ping"))
+ r = sd_bus_message_new_method_return(m, &reply);
+ else if (streq_ptr(m->member, "GetMachineId")) {
+ sd_id128_t id;
+ char sid[33];
+
+ r = sd_id128_get_machine(&id);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_new_method_return(m, &reply);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append(reply, "s", sd_id128_to_string(id, sid));
+ } else {
+ r = sd_bus_message_new_method_errorf(
+ m, &reply,
+ SD_BUS_ERROR_UNKNOWN_METHOD,
+ "Unknown method '%s' on interface '%s'.", m->member, m->interface);
+ }
+
+ if (r < 0)
+ return r;
+
+ r = sd_bus_send(bus, reply, NULL);
+ if (r < 0)
+ return r;
+
+ return 1;
+}
+
+static int process_fd_check(sd_bus *bus, sd_bus_message *m) {
+ assert(bus);
+ assert(m);
+
+ /* If we got a message with a file descriptor which we didn't
+ * want to accept, then let's drop it. How can this even
+ * happen? For example, when the kernel queues a message into
+ * an activatable names's queue which allows fds, and then is
+ * delivered to us later even though we ourselves did not
+ * negotiate it. */
+
+ if (bus->hello_flags & KDBUS_HELLO_MONITOR)
+ return 0;
+
+ if (m->n_fds <= 0)
+ return 0;
+
+ if (bus->hello_flags & KDBUS_HELLO_ACCEPT_FD)
+ return 0;
+
+ if (m->header->type != SD_BUS_MESSAGE_METHOD_CALL)
+ return 1; /* just eat it up */
+
+ return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INCONSISTENT_MESSAGE, "Message contains file descriptors, which I cannot accept. Sorry.");
+}
+
+static int process_message(sd_bus *bus, sd_bus_message *m) {
+ int r;
+
+ assert(bus);
+ assert(m);
+
+ bus->current_message = m;
+ bus->iteration_counter++;
+
+ log_debug_bus_message(m);
+
+ r = process_hello(bus, m);
+ if (r != 0)
+ goto finish;
+
+ r = process_reply(bus, m);
+ if (r != 0)
+ goto finish;
+
+ r = process_fd_check(bus, m);
+ if (r != 0)
+ goto finish;
+
+ r = process_filter(bus, m);
+ if (r != 0)
+ goto finish;
+
+ r = process_match(bus, m);
+ if (r != 0)
+ goto finish;
+
+ r = process_builtin(bus, m);
+ if (r != 0)
+ goto finish;
+
+ r = bus_process_object(bus, m);
+
+finish:
+ bus->current_message = NULL;
+ return r;
+}
+
+static int dispatch_track(sd_bus *bus) {
+ assert(bus);
+
+ if (!bus->track_queue)
+ return 0;
+
+ bus_track_dispatch(bus->track_queue);
+ return 1;
+}
+
+static int process_running(sd_bus *bus, bool hint_priority, int64_t priority, sd_bus_message **ret) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+ int r;
+
+ assert(bus);
+ assert(bus->state == BUS_RUNNING || bus->state == BUS_HELLO);
+
+ r = process_timeout(bus);
+ if (r != 0)
+ goto null_message;
+
+ r = dispatch_wqueue(bus);
+ if (r != 0)
+ goto null_message;
+
+ r = dispatch_track(bus);
+ if (r != 0)
+ goto null_message;
+
+ r = dispatch_rqueue(bus, hint_priority, priority, &m);
+ if (r < 0)
+ return r;
+ if (!m)
+ goto null_message;
+
+ r = process_message(bus, m);
+ if (r != 0)
+ goto null_message;
+
+ if (ret) {
+ r = sd_bus_message_rewind(m, true);
+ if (r < 0)
+ return r;
+
+ *ret = m;
+ m = NULL;
+ return 1;
+ }
+
+ if (m->header->type == SD_BUS_MESSAGE_METHOD_CALL) {
+
+ log_debug("Unprocessed message call sender=%s object=%s interface=%s member=%s",
+ strna(sd_bus_message_get_sender(m)),
+ strna(sd_bus_message_get_path(m)),
+ strna(sd_bus_message_get_interface(m)),
+ strna(sd_bus_message_get_member(m)));
+
+ r = sd_bus_reply_method_errorf(
+ m,
+ SD_BUS_ERROR_UNKNOWN_OBJECT,
+ "Unknown object '%s'.", m->path);
+ if (r < 0)
+ return r;
+ }
+
+ return 1;
+
+null_message:
+ if (r >= 0 && ret)
+ *ret = NULL;
+
+ return r;
+}
+
+static int process_closing(sd_bus *bus, sd_bus_message **ret) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+ struct reply_callback *c;
+ int r;
+
+ assert(bus);
+ assert(bus->state == BUS_CLOSING);
+
+ c = ordered_hashmap_first(bus->reply_callbacks);
+ if (c) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error_buffer = SD_BUS_ERROR_NULL;
+ sd_bus_slot *slot;
+
+ /* First, fail all outstanding method calls */
+ r = bus_message_new_synthetic_error(
+ bus,
+ c->cookie,
+ &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_NO_REPLY, "Connection terminated"),
+ &m);
+ if (r < 0)
+ return r;
+
+ r = bus_seal_synthetic_message(bus, m);
+ if (r < 0)
+ return r;
+
+ if (c->timeout != 0) {
+ prioq_remove(bus->reply_callbacks_prioq, c, &c->prioq_idx);
+ c->timeout = 0;
+ }
+
+ ordered_hashmap_remove(bus->reply_callbacks, &c->cookie);
+ c->cookie = 0;
+
+ slot = container_of(c, sd_bus_slot, reply_callback);
+
+ bus->iteration_counter++;
+
+ bus->current_message = m;
+ bus->current_slot = sd_bus_slot_ref(slot);
+ bus->current_handler = c->callback;
+ bus->current_userdata = slot->userdata;
+ r = c->callback(m, slot->userdata, &error_buffer);
+ bus->current_userdata = NULL;
+ bus->current_handler = NULL;
+ bus->current_slot = NULL;
+ bus->current_message = NULL;
+
+ if (slot->floating) {
+ bus_slot_disconnect(slot);
+ sd_bus_slot_unref(slot);
+ }
+
+ sd_bus_slot_unref(slot);
+
+ return bus_maybe_reply_error(m, r, &error_buffer);
+ }
+
+ /* Then, synthesize a Disconnected message */
+ r = sd_bus_message_new_signal(
+ bus,
+ &m,
+ "/org/freedesktop/DBus/Local",
+ "org.freedesktop.DBus.Local",
+ "Disconnected");
+ if (r < 0)
+ return r;
+
+ bus_message_set_sender_local(bus, m);
+
+ r = bus_seal_synthetic_message(bus, m);
+ if (r < 0)
+ return r;
+
+ sd_bus_close(bus);
+
+ bus->current_message = m;
+ bus->iteration_counter++;
+
+ r = process_filter(bus, m);
+ if (r != 0)
+ goto finish;
+
+ r = process_match(bus, m);
+ if (r != 0)
+ goto finish;
+
+ if (ret) {
+ *ret = m;
+ m = NULL;
+ }
+
+ r = 1;
+
+finish:
+ bus->current_message = NULL;
+
+ return r;
+}
+
+static int bus_process_internal(sd_bus *bus, bool hint_priority, int64_t priority, sd_bus_message **ret) {
+ BUS_DONT_DESTROY(bus);
+ int r;
+
+ /* Returns 0 when we didn't do anything. This should cause the
+ * caller to invoke sd_bus_wait() before returning the next
+ * time. Returns > 0 when we did something, which possibly
+ * means *ret is filled in with an unprocessed message. */
+
+ assert_return(bus, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ /* We don't allow recursively invoking sd_bus_process(). */
+ assert_return(!bus->current_message, -EBUSY);
+ assert(!bus->current_slot);
+
+ switch (bus->state) {
+
+ case BUS_UNSET:
+ return -ENOTCONN;
+
+ case BUS_CLOSED:
+ return -ECONNRESET;
+
+ case BUS_OPENING:
+ r = bus_socket_process_opening(bus);
+ if (IN_SET(r, -ENOTCONN, -ECONNRESET, -EPIPE, -ESHUTDOWN)) {
+ bus_enter_closing(bus);
+ r = 1;
+ } else if (r < 0)
+ return r;
+ if (ret)
+ *ret = NULL;
+ return r;
+
+ case BUS_AUTHENTICATING:
+ r = bus_socket_process_authenticating(bus);
+ if (IN_SET(r, -ENOTCONN, -ECONNRESET, -EPIPE, -ESHUTDOWN)) {
+ bus_enter_closing(bus);
+ r = 1;
+ } else if (r < 0)
+ return r;
+
+ if (ret)
+ *ret = NULL;
+
+ return r;
+
+ case BUS_RUNNING:
+ case BUS_HELLO:
+ r = process_running(bus, hint_priority, priority, ret);
+ if (IN_SET(r, -ENOTCONN, -ECONNRESET, -EPIPE, -ESHUTDOWN)) {
+ bus_enter_closing(bus);
+ r = 1;
+
+ if (ret)
+ *ret = NULL;
+ }
+
+ return r;
+
+ case BUS_CLOSING:
+ return process_closing(bus, ret);
+ }
+
+ assert_not_reached("Unknown state");
+}
+
+_public_ int sd_bus_process(sd_bus *bus, sd_bus_message **ret) {
+ return bus_process_internal(bus, false, 0, ret);
+}
+
+_public_ int sd_bus_process_priority(sd_bus *bus, int64_t priority, sd_bus_message **ret) {
+ return bus_process_internal(bus, true, priority, ret);
+}
+
+static int bus_poll(sd_bus *bus, bool need_more, uint64_t timeout_usec) {
+ struct pollfd p[2] = {};
+ int r, e, n;
+ struct timespec ts;
+ usec_t m = USEC_INFINITY;
+
+ assert(bus);
+
+ if (bus->state == BUS_CLOSING)
+ return 1;
+
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
+ e = sd_bus_get_events(bus);
+ if (e < 0)
+ return e;
+
+ if (need_more)
+ /* The caller really needs some more data, he doesn't
+ * care about what's already read, or any timeouts
+ * except its own. */
+ e |= POLLIN;
+ else {
+ usec_t until;
+ /* The caller wants to process if there's something to
+ * process, but doesn't care otherwise */
+
+ r = sd_bus_get_timeout(bus, &until);
+ if (r < 0)
+ return r;
+ if (r > 0) {
+ usec_t nw;
+ nw = now(CLOCK_MONOTONIC);
+ m = until > nw ? until - nw : 0;
+ }
+ }
+
+ if (timeout_usec != (uint64_t) -1 && (m == (uint64_t) -1 || timeout_usec < m))
+ m = timeout_usec;
+
+ p[0].fd = bus->input_fd;
+ if (bus->output_fd == bus->input_fd) {
+ p[0].events = e;
+ n = 1;
+ } else {
+ p[0].events = e & POLLIN;
+ p[1].fd = bus->output_fd;
+ p[1].events = e & POLLOUT;
+ n = 2;
+ }
+
+ r = ppoll(p, n, m == (uint64_t) -1 ? NULL : timespec_store(&ts, m), NULL);
+ if (r < 0)
+ return -errno;
+
+ return r > 0 ? 1 : 0;
+}
+
+_public_ int sd_bus_wait(sd_bus *bus, uint64_t timeout_usec) {
+
+ assert_return(bus, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ if (bus->state == BUS_CLOSING)
+ return 0;
+
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
+ if (bus->rqueue_size > 0)
+ return 0;
+
+ return bus_poll(bus, false, timeout_usec);
+}
+
+_public_ int sd_bus_flush(sd_bus *bus) {
+ int r;
+
+ assert_return(bus, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ if (bus->state == BUS_CLOSING)
+ return 0;
+
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
+ r = bus_ensure_running(bus);
+ if (r < 0)
+ return r;
+
+ if (bus->wqueue_size <= 0)
+ return 0;
+
+ for (;;) {
+ r = dispatch_wqueue(bus);
+ if (r < 0) {
+ if (IN_SET(r, -ENOTCONN, -ECONNRESET, -EPIPE, -ESHUTDOWN)) {
+ bus_enter_closing(bus);
+ return -ECONNRESET;
+ }
+
+ return r;
+ }
+
+ if (bus->wqueue_size <= 0)
+ return 0;
+
+ r = bus_poll(bus, false, (uint64_t) -1);
+ if (r < 0)
+ return r;
+ }
+}
+
+_public_ int sd_bus_add_filter(
+ sd_bus *bus,
+ sd_bus_slot **slot,
+ sd_bus_message_handler_t callback,
+ void *userdata) {
+
+ sd_bus_slot *s;
+
+ assert_return(bus, -EINVAL);
+ assert_return(callback, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ s = bus_slot_allocate(bus, !slot, BUS_FILTER_CALLBACK, sizeof(struct filter_callback), userdata);
+ if (!s)
+ return -ENOMEM;
+
+ s->filter_callback.callback = callback;
+
+ bus->filter_callbacks_modified = true;
+ LIST_PREPEND(callbacks, bus->filter_callbacks, &s->filter_callback);
+
+ if (slot)
+ *slot = s;
+
+ return 0;
+}
+
+_public_ int sd_bus_add_match(
+ sd_bus *bus,
+ sd_bus_slot **slot,
+ const char *match,
+ sd_bus_message_handler_t callback,
+ void *userdata) {
+
+ struct bus_match_component *components = NULL;
+ unsigned n_components = 0;
+ sd_bus_slot *s = NULL;
+ int r = 0;
+
+ assert_return(bus, -EINVAL);
+ assert_return(match, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ r = bus_match_parse(match, &components, &n_components);
+ if (r < 0)
+ goto finish;
+
+ s = bus_slot_allocate(bus, !slot, BUS_MATCH_CALLBACK, sizeof(struct match_callback), userdata);
+ if (!s) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ s->match_callback.callback = callback;
+ s->match_callback.cookie = ++bus->match_cookie;
+
+ if (bus->bus_client) {
+ enum bus_match_scope scope;
+
+ scope = bus_match_get_scope(components, n_components);
+
+ /* Do not install server-side matches for matches
+ * against the local service, interface or bus
+ * path. */
+ if (scope != BUS_MATCH_LOCAL) {
+
+ if (!bus->is_kernel) {
+ /* When this is not a kernel transport, we
+ * store the original match string, so that we
+ * can use it to remove the match again */
+
+ s->match_callback.match_string = strdup(match);
+ if (!s->match_callback.match_string) {
+ r = -ENOMEM;
+ goto finish;
+ }
+ }
+
+ r = bus_add_match_internal(bus, s->match_callback.match_string, components, n_components, s->match_callback.cookie);
+ if (r < 0)
+ goto finish;
+
+ s->match_added = true;
+ }
+ }
+
+ bus->match_callbacks_modified = true;
+ r = bus_match_add(&bus->match_callbacks, components, n_components, &s->match_callback);
+ if (r < 0)
+ goto finish;
+
+ if (slot)
+ *slot = s;
+ s = NULL;
+
+finish:
+ bus_match_parse_free(components, n_components);
+ sd_bus_slot_unref(s);
+
+ return r;
+}
+
+int bus_remove_match_by_string(
+ sd_bus *bus,
+ const char *match,
+ sd_bus_message_handler_t callback,
+ void *userdata) {
+
+ struct bus_match_component *components = NULL;
+ unsigned n_components = 0;
+ struct match_callback *c;
+ int r = 0;
+
+ assert_return(bus, -EINVAL);
+ assert_return(match, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ r = bus_match_parse(match, &components, &n_components);
+ if (r < 0)
+ goto finish;
+
+ r = bus_match_find(&bus->match_callbacks, components, n_components, NULL, NULL, &c);
+ if (r <= 0)
+ goto finish;
+
+ sd_bus_slot_unref(container_of(c, sd_bus_slot, match_callback));
+
+finish:
+ bus_match_parse_free(components, n_components);
+
+ return r;
+}
+
+bool bus_pid_changed(sd_bus *bus) {
+ assert(bus);
+
+ /* We don't support people creating a bus connection and
+ * keeping it around over a fork(). Let's complain. */
+
+ return bus->original_pid != getpid();
+}
+
+static int io_callback(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
+ sd_bus *bus = userdata;
+ int r;
+
+ assert(bus);
+
+ r = sd_bus_process(bus, NULL);
+ if (r < 0)
+ return r;
+
+ return 1;
+}
+
+static int time_callback(sd_event_source *s, uint64_t usec, void *userdata) {
+ sd_bus *bus = userdata;
+ int r;
+
+ assert(bus);
+
+ r = sd_bus_process(bus, NULL);
+ if (r < 0)
+ return r;
+
+ return 1;
+}
+
+static int prepare_callback(sd_event_source *s, void *userdata) {
+ sd_bus *bus = userdata;
+ int r, e;
+ usec_t until;
+
+ assert(s);
+ assert(bus);
+
+ e = sd_bus_get_events(bus);
+ if (e < 0)
+ return e;
+
+ if (bus->output_fd != bus->input_fd) {
+
+ r = sd_event_source_set_io_events(bus->input_io_event_source, e & POLLIN);
+ if (r < 0)
+ return r;
+
+ r = sd_event_source_set_io_events(bus->output_io_event_source, e & POLLOUT);
+ if (r < 0)
+ return r;
+ } else {
+ r = sd_event_source_set_io_events(bus->input_io_event_source, e);
+ if (r < 0)
+ return r;
+ }
+
+ r = sd_bus_get_timeout(bus, &until);
+ if (r < 0)
+ return r;
+ if (r > 0) {
+ int j;
+
+ j = sd_event_source_set_time(bus->time_event_source, until);
+ if (j < 0)
+ return j;
+ }
+
+ r = sd_event_source_set_enabled(bus->time_event_source, r > 0);
+ if (r < 0)
+ return r;
+
+ return 1;
+}
+
+static int quit_callback(sd_event_source *event, void *userdata) {
+ sd_bus *bus = userdata;
+
+ assert(event);
+
+ sd_bus_flush(bus);
+ sd_bus_close(bus);
+
+ return 1;
+}
+
+static int attach_io_events(sd_bus *bus) {
+ int r;
+
+ assert(bus);
+
+ if (bus->input_fd < 0)
+ return 0;
+
+ if (!bus->event)
+ return 0;
+
+ if (!bus->input_io_event_source) {
+ r = sd_event_add_io(bus->event, &bus->input_io_event_source, bus->input_fd, 0, io_callback, bus);
+ if (r < 0)
+ return r;
+
+ r = sd_event_source_set_prepare(bus->input_io_event_source, prepare_callback);
+ if (r < 0)
+ return r;
+
+ r = sd_event_source_set_priority(bus->input_io_event_source, bus->event_priority);
+ if (r < 0)
+ return r;
+
+ r = sd_event_source_set_description(bus->input_io_event_source, "bus-input");
+ } else
+ r = sd_event_source_set_io_fd(bus->input_io_event_source, bus->input_fd);
+
+ if (r < 0)
+ return r;
+
+ if (bus->output_fd != bus->input_fd) {
+ assert(bus->output_fd >= 0);
+
+ if (!bus->output_io_event_source) {
+ r = sd_event_add_io(bus->event, &bus->output_io_event_source, bus->output_fd, 0, io_callback, bus);
+ if (r < 0)
+ return r;
+
+ r = sd_event_source_set_priority(bus->output_io_event_source, bus->event_priority);
+ if (r < 0)
+ return r;
+
+ r = sd_event_source_set_description(bus->input_io_event_source, "bus-output");
+ } else
+ r = sd_event_source_set_io_fd(bus->output_io_event_source, bus->output_fd);
+
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
+static void detach_io_events(sd_bus *bus) {
+ assert(bus);
+
+ if (bus->input_io_event_source) {
+ sd_event_source_set_enabled(bus->input_io_event_source, SD_EVENT_OFF);
+ bus->input_io_event_source = sd_event_source_unref(bus->input_io_event_source);
+ }
+
+ if (bus->output_io_event_source) {
+ sd_event_source_set_enabled(bus->output_io_event_source, SD_EVENT_OFF);
+ bus->output_io_event_source = sd_event_source_unref(bus->output_io_event_source);
+ }
+}
+
+_public_ int sd_bus_attach_event(sd_bus *bus, sd_event *event, int priority) {
+ int r;
+
+ assert_return(bus, -EINVAL);
+ assert_return(!bus->event, -EBUSY);
+
+ assert(!bus->input_io_event_source);
+ assert(!bus->output_io_event_source);
+ assert(!bus->time_event_source);
+
+ if (event)
+ bus->event = sd_event_ref(event);
+ else {
+ r = sd_event_default(&bus->event);
+ if (r < 0)
+ return r;
+ }
+
+ bus->event_priority = priority;
+
+ r = sd_event_add_time(bus->event, &bus->time_event_source, CLOCK_MONOTONIC, 0, 0, time_callback, bus);
+ if (r < 0)
+ goto fail;
+
+ r = sd_event_source_set_priority(bus->time_event_source, priority);
+ if (r < 0)
+ goto fail;
+
+ r = sd_event_source_set_description(bus->time_event_source, "bus-time");
+ if (r < 0)
+ goto fail;
+
+ r = sd_event_add_exit(bus->event, &bus->quit_event_source, quit_callback, bus);
+ if (r < 0)
+ goto fail;
+
+ r = sd_event_source_set_description(bus->quit_event_source, "bus-exit");
+ if (r < 0)
+ goto fail;
+
+ r = attach_io_events(bus);
+ if (r < 0)
+ goto fail;
+
+ return 0;
+
+fail:
+ sd_bus_detach_event(bus);
+ return r;
+}
+
+_public_ int sd_bus_detach_event(sd_bus *bus) {
+ assert_return(bus, -EINVAL);
+
+ if (!bus->event)
+ return 0;
+
+ detach_io_events(bus);
+
+ if (bus->time_event_source) {
+ sd_event_source_set_enabled(bus->time_event_source, SD_EVENT_OFF);
+ bus->time_event_source = sd_event_source_unref(bus->time_event_source);
+ }
+
+ if (bus->quit_event_source) {
+ sd_event_source_set_enabled(bus->quit_event_source, SD_EVENT_OFF);
+ bus->quit_event_source = sd_event_source_unref(bus->quit_event_source);
+ }
+
+ bus->event = sd_event_unref(bus->event);
+ return 1;
+}
+
+_public_ sd_event* sd_bus_get_event(sd_bus *bus) {
+ assert_return(bus, NULL);
+
+ return bus->event;
+}
+
+_public_ sd_bus_message* sd_bus_get_current_message(sd_bus *bus) {
+ assert_return(bus, NULL);
+
+ return bus->current_message;
+}
+
+_public_ sd_bus_slot* sd_bus_get_current_slot(sd_bus *bus) {
+ assert_return(bus, NULL);
+
+ return bus->current_slot;
+}
+
+_public_ sd_bus_message_handler_t sd_bus_get_current_handler(sd_bus *bus) {
+ assert_return(bus, NULL);
+
+ return bus->current_handler;
+}
+
+_public_ void* sd_bus_get_current_userdata(sd_bus *bus) {
+ assert_return(bus, NULL);
+
+ return bus->current_userdata;
+}
+
+static int bus_default(int (*bus_open)(sd_bus **), sd_bus **default_bus, sd_bus **ret) {
+ sd_bus *b = NULL;
+ int r;
+
+ assert(bus_open);
+ assert(default_bus);
+
+ if (!ret)
+ return !!*default_bus;
+
+ if (*default_bus) {
+ *ret = sd_bus_ref(*default_bus);
+ return 0;
+ }
+
+ r = bus_open(&b);
+ if (r < 0)
+ return r;
+
+ b->default_bus_ptr = default_bus;
+ b->tid = gettid();
+ *default_bus = b;
+
+ *ret = b;
+ return 1;
+}
+
+_public_ int sd_bus_default_system(sd_bus **ret) {
+ return bus_default(sd_bus_open_system, &default_system_bus, ret);
+}
+
+
+_public_ int sd_bus_default_user(sd_bus **ret) {
+ return bus_default(sd_bus_open_user, &default_user_bus, ret);
+}
+
+_public_ int sd_bus_default(sd_bus **ret) {
+
+ const char *e;
+
+ /* Let's try our best to reuse another cached connection. If
+ * the starter bus type is set, connect via our normal
+ * connection logic, ignoring $DBUS_STARTER_ADDRESS, so that
+ * we can share the connection with the user/system default
+ * bus. */
+
+ e = secure_getenv("DBUS_STARTER_BUS_TYPE");
+ if (e) {
+ if (streq(e, "system"))
+ return sd_bus_default_system(ret);
+ else if (STR_IN_SET(e, "user", "session"))
+ return sd_bus_default_user(ret);
+ }
+
+ /* No type is specified, so we have not other option than to
+ * use the starter address if it is set. */
+
+ e = secure_getenv("DBUS_STARTER_ADDRESS");
+ if (e) {
+
+ return bus_default(sd_bus_open, &default_starter_bus, ret);
+ }
+
+ /* Finally, if nothing is set use the cached connection for
+ * the right scope */
+
+ if (cg_pid_get_owner_uid(0, NULL) >= 0)
+ return sd_bus_default_user(ret);
+ else
+ return sd_bus_default_system(ret);
+}
+
+_public_ int sd_bus_get_tid(sd_bus *b, pid_t *tid) {
+ assert_return(b, -EINVAL);
+ assert_return(tid, -EINVAL);
+ assert_return(!bus_pid_changed(b), -ECHILD);
+
+ if (b->tid != 0) {
+ *tid = b->tid;
+ return 0;
+ }
+
+ if (b->event)
+ return sd_event_get_tid(b->event, tid);
+
+ return -ENXIO;
+}
+
+_public_ int sd_bus_path_encode(const char *prefix, const char *external_id, char **ret_path) {
+ _cleanup_free_ char *e = NULL;
+ char *ret;
+
+ assert_return(object_path_is_valid(prefix), -EINVAL);
+ assert_return(external_id, -EINVAL);
+ assert_return(ret_path, -EINVAL);
+
+ e = bus_label_escape(external_id);
+ if (!e)
+ return -ENOMEM;
+
+ ret = strjoin(prefix, "/", e, NULL);
+ if (!ret)
+ return -ENOMEM;
+
+ *ret_path = ret;
+ return 0;
+}
+
+_public_ int sd_bus_path_decode(const char *path, const char *prefix, char **external_id) {
+ const char *e;
+ char *ret;
+
+ assert_return(object_path_is_valid(path), -EINVAL);
+ assert_return(object_path_is_valid(prefix), -EINVAL);
+ assert_return(external_id, -EINVAL);
+
+ e = object_path_startswith(path, prefix);
+ if (!e) {
+ *external_id = NULL;
+ return 0;
+ }
+
+ ret = bus_label_unescape(e);
+ if (!ret)
+ return -ENOMEM;
+
+ *external_id = ret;
+ return 1;
+}
+
+_public_ int sd_bus_path_encode_many(char **out, const char *path_template, ...) {
+ _cleanup_strv_free_ char **labels = NULL;
+ char *path, *path_pos, **label_pos;
+ const char *sep, *template_pos;
+ size_t path_length;
+ va_list list;
+ int r;
+
+ assert_return(out, -EINVAL);
+ assert_return(path_template, -EINVAL);
+
+ path_length = strlen(path_template);
+
+ va_start(list, path_template);
+ for (sep = strchr(path_template, '%'); sep; sep = strchr(sep + 1, '%')) {
+ const char *arg;
+ char *label;
+
+ arg = va_arg(list, const char *);
+ if (!arg) {
+ va_end(list);
+ return -EINVAL;
+ }
+
+ label = bus_label_escape(arg);
+ if (!label) {
+ va_end(list);
+ return -ENOMEM;
+ }
+
+ r = strv_consume(&labels, label);
+ if (r < 0) {
+ va_end(list);
+ return r;
+ }
+
+ /* add label length, but account for the format character */
+ path_length += strlen(label) - 1;
+ }
+ va_end(list);
+
+ path = malloc(path_length + 1);
+ if (!path)
+ return -ENOMEM;
+
+ path_pos = path;
+ label_pos = labels;
+
+ for (template_pos = path_template; *template_pos; ) {
+ sep = strchrnul(template_pos, '%');
+ path_pos = mempcpy(path_pos, template_pos, sep - template_pos);
+ if (!*sep)
+ break;
+
+ path_pos = stpcpy(path_pos, *label_pos++);
+ template_pos = sep + 1;
+ }
+
+ *path_pos = 0;
+ *out = path;
+ return 0;
+}
+
+_public_ int sd_bus_path_decode_many(const char *path, const char *path_template, ...) {
+ _cleanup_strv_free_ char **labels = NULL;
+ const char *template_pos, *path_pos;
+ char **label_pos;
+ va_list list;
+ int r;
+
+ /*
+ * This decodes an object-path based on a template argument. The
+ * template consists of a verbatim path, optionally including special
+ * directives:
+ *
+ * - Each occurrence of '%' in the template matches an arbitrary
+ * substring of a label in the given path. At most one such
+ * directive is allowed per label. For each such directive, the
+ * caller must provide an output parameter (char **) via va_arg. If
+ * NULL is passed, the given label is verified, but not returned.
+ * For each matched label, the *decoded* label is stored in the
+ * passed output argument, and the caller is responsible to free
+ * it. Note that the output arguments are only modified if the
+ * actualy path matched the template. Otherwise, they're left
+ * untouched.
+ *
+ * This function returns <0 on error, 0 if the path does not match the
+ * template, 1 if it matched.
+ */
+
+ assert_return(path, -EINVAL);
+ assert_return(path_template, -EINVAL);
+
+ path_pos = path;
+
+ for (template_pos = path_template; *template_pos; ) {
+ const char *sep;
+ size_t length;
+ char *label;
+
+ /* verify everything until the next '%' matches verbatim */
+ sep = strchrnul(template_pos, '%');
+ length = sep - template_pos;
+ if (strncmp(path_pos, template_pos, length))
+ return 0;
+
+ path_pos += length;
+ template_pos += length;
+
+ if (!*template_pos)
+ break;
+
+ /* We found the next '%' character. Everything up until here
+ * matched. We now skip ahead to the end of this label and make
+ * sure it matches the tail of the label in the path. Then we
+ * decode the string in-between and save it for later use. */
+
+ ++template_pos; /* skip over '%' */
+
+ sep = strchrnul(template_pos, '/');
+ length = sep - template_pos; /* length of suffix to match verbatim */
+
+ /* verify the suffixes match */
+ sep = strchrnul(path_pos, '/');
+ if (sep - path_pos < (ssize_t)length ||
+ strncmp(sep - length, template_pos, length))
+ return 0;
+
+ template_pos += length; /* skip over matched label */
+ length = sep - path_pos - length; /* length of sub-label to decode */
+
+ /* store unescaped label for later use */
+ label = bus_label_unescape_n(path_pos, length);
+ if (!label)
+ return -ENOMEM;
+
+ r = strv_consume(&labels, label);
+ if (r < 0)
+ return r;
+
+ path_pos = sep; /* skip decoded label and suffix */
+ }
+
+ /* end of template must match end of path */
+ if (*path_pos)
+ return 0;
+
+ /* copy the labels over to the caller */
+ va_start(list, path_template);
+ for (label_pos = labels; label_pos && *label_pos; ++label_pos) {
+ char **arg;
+
+ arg = va_arg(list, char **);
+ if (arg)
+ *arg = *label_pos;
+ else
+ free(*label_pos);
+ }
+ va_end(list);
+
+ free(labels);
+ labels = NULL;
+ return 1;
+}
+
+_public_ int sd_bus_try_close(sd_bus *bus) {
+ int r;
+
+ assert_return(bus, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ if (!bus->is_kernel)
+ return -EOPNOTSUPP;
+
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
+ if (bus->rqueue_size > 0)
+ return -EBUSY;
+
+ if (bus->wqueue_size > 0)
+ return -EBUSY;
+
+ r = bus_kernel_try_close(bus);
+ if (r < 0)
+ return r;
+
+ sd_bus_close(bus);
+ return 0;
+}
+
+_public_ int sd_bus_get_description(sd_bus *bus, const char **description) {
+ assert_return(bus, -EINVAL);
+ assert_return(description, -EINVAL);
+ assert_return(bus->description, -ENXIO);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ *description = bus->description;
+ return 0;
+}
+
+int bus_get_root_path(sd_bus *bus) {
+ int r;
+
+ if (bus->cgroup_root)
+ return 0;
+
+ r = cg_get_root_path(&bus->cgroup_root);
+ if (r == -ENOENT) {
+ bus->cgroup_root = strdup("/");
+ if (!bus->cgroup_root)
+ return -ENOMEM;
+
+ r = 0;
+ }
+
+ return r;
+}
+
+_public_ int sd_bus_get_scope(sd_bus *bus, const char **scope) {
+ int r;
+
+ assert_return(bus, -EINVAL);
+ assert_return(scope, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ if (bus->is_kernel) {
+ _cleanup_free_ char *n = NULL;
+ const char *dash;
+
+ r = bus_kernel_get_bus_name(bus, &n);
+ if (r < 0)
+ return r;
+
+ if (streq(n, "0-system")) {
+ *scope = "system";
+ return 0;
+ }
+
+ dash = strchr(n, '-');
+ if (streq_ptr(dash, "-user")) {
+ *scope = "user";
+ return 0;
+ }
+ }
+
+ if (bus->is_user) {
+ *scope = "user";
+ return 0;
+ }
+
+ if (bus->is_system) {
+ *scope = "system";
+ return 0;
+ }
+
+ return -ENODATA;
+}
+
+_public_ int sd_bus_get_address(sd_bus *bus, const char **address) {
+
+ assert_return(bus, -EINVAL);
+ assert_return(address, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ if (bus->address) {
+ *address = bus->address;
+ return 0;
+ }
+
+ return -ENODATA;
+}
+
+_public_ int sd_bus_get_creds_mask(sd_bus *bus, uint64_t *mask) {
+ assert_return(bus, -EINVAL);
+ assert_return(mask, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ *mask = bus->creds_mask;
+ return 0;
+}
+
+_public_ int sd_bus_is_bus_client(sd_bus *bus) {
+ assert_return(bus, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ return bus->bus_client;
+}
+
+_public_ int sd_bus_is_server(sd_bus *bus) {
+ assert_return(bus, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ return bus->is_server;
+}
+
+_public_ int sd_bus_is_anonymous(sd_bus *bus) {
+ assert_return(bus, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ return bus->anonymous_auth;
+}
+
+_public_ int sd_bus_is_trusted(sd_bus *bus) {
+ assert_return(bus, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ return bus->trusted;
+}
+
+_public_ int sd_bus_is_monitor(sd_bus *bus) {
+ assert_return(bus, -EINVAL);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ return !!(bus->hello_flags & KDBUS_HELLO_MONITOR);
+}
+
+static void flush_close(sd_bus *bus) {
+ if (!bus)
+ return;
+
+ /* Flushes and closes the specified bus. We take a ref before,
+ * to ensure the flushing does not cause the bus to be
+ * unreferenced. */
+
+ sd_bus_flush_close_unref(sd_bus_ref(bus));
+}
+
+_public_ void sd_bus_default_flush_close(void) {
+ flush_close(default_starter_bus);
+ flush_close(default_user_bus);
+ flush_close(default_system_bus);
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/test-bus-benchmark.c b/src/libsystemd/libsystemd-internal/sd-bus/test-bus-benchmark.c
new file mode 100644
index 0000000000..a222d36bb4
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/test-bus-benchmark.c
@@ -0,0 +1,371 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <sys/wait.h>
+
+#include <systemd/sd-bus.h>
+
+#include "alloc-util.h"
+#include "bus-internal.h"
+#include "bus-kernel.h"
+#include "bus-util.h"
+#include "def.h"
+#include "fd-util.h"
+#include "time-util.h"
+#include "util.h"
+
+#define MAX_SIZE (2*1024*1024)
+
+static usec_t arg_loop_usec = 100 * USEC_PER_MSEC;
+
+typedef enum Type {
+ TYPE_KDBUS,
+ TYPE_LEGACY,
+ TYPE_DIRECT,
+} Type;
+
+static void server(sd_bus *b, size_t *result) {
+ int r;
+
+ for (;;) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+
+ r = sd_bus_process(b, &m);
+ assert_se(r >= 0);
+
+ if (r == 0)
+ assert_se(sd_bus_wait(b, USEC_INFINITY) >= 0);
+ if (!m)
+ continue;
+
+ if (sd_bus_message_is_method_call(m, "benchmark.server", "Ping"))
+ assert_se(sd_bus_reply_method_return(m, NULL) >= 0);
+ else if (sd_bus_message_is_method_call(m, "benchmark.server", "Work")) {
+ const void *p;
+ size_t sz;
+
+ /* Make sure the mmap is mapped */
+ assert_se(sd_bus_message_read_array(m, 'y', &p, &sz) > 0);
+
+ r = sd_bus_reply_method_return(m, NULL);
+ assert_se(r >= 0);
+ } else if (sd_bus_message_is_method_call(m, "benchmark.server", "Exit")) {
+ uint64_t res;
+ assert_se(sd_bus_message_read(m, "t", &res) > 0);
+
+ *result = res;
+ return;
+
+ } else if (!sd_bus_message_is_signal(m, NULL, NULL))
+ assert_not_reached("Unknown method");
+ }
+}
+
+static void transaction(sd_bus *b, size_t sz, const char *server_name) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
+ uint8_t *p;
+
+ assert_se(sd_bus_message_new_method_call(b, &m, server_name, "/", "benchmark.server", "Work") >= 0);
+ assert_se(sd_bus_message_append_array_space(m, 'y', sz, (void**) &p) >= 0);
+
+ memset(p, 0x80, sz);
+
+ assert_se(sd_bus_call(b, m, 0, NULL, &reply) >= 0);
+}
+
+static void client_bisect(const char *address, const char *server_name) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *x = NULL;
+ size_t lsize, rsize, csize;
+ sd_bus *b;
+ int r;
+
+ r = sd_bus_new(&b);
+ assert_se(r >= 0);
+
+ r = sd_bus_set_address(b, address);
+ assert_se(r >= 0);
+
+ r = sd_bus_start(b);
+ assert_se(r >= 0);
+
+ r = sd_bus_call_method(b, server_name, "/", "benchmark.server", "Ping", NULL, NULL, NULL);
+ assert_se(r >= 0);
+
+ lsize = 1;
+ rsize = MAX_SIZE;
+
+ printf("SIZE\tCOPY\tMEMFD\n");
+
+ for (;;) {
+ usec_t t;
+ unsigned n_copying, n_memfd;
+
+ csize = (lsize + rsize) / 2;
+
+ if (csize <= lsize)
+ break;
+
+ if (csize <= 0)
+ break;
+
+ printf("%zu\t", csize);
+
+ b->use_memfd = 0;
+
+ t = now(CLOCK_MONOTONIC);
+ for (n_copying = 0;; n_copying++) {
+ transaction(b, csize, server_name);
+ if (now(CLOCK_MONOTONIC) >= t + arg_loop_usec)
+ break;
+ }
+ printf("%u\t", (unsigned) ((n_copying * USEC_PER_SEC) / arg_loop_usec));
+
+ b->use_memfd = -1;
+
+ t = now(CLOCK_MONOTONIC);
+ for (n_memfd = 0;; n_memfd++) {
+ transaction(b, csize, server_name);
+ if (now(CLOCK_MONOTONIC) >= t + arg_loop_usec)
+ break;
+ }
+ printf("%u\n", (unsigned) ((n_memfd * USEC_PER_SEC) / arg_loop_usec));
+
+ if (n_copying == n_memfd)
+ break;
+
+ if (n_copying > n_memfd)
+ lsize = csize;
+ else
+ rsize = csize;
+ }
+
+ b->use_memfd = 1;
+ assert_se(sd_bus_message_new_method_call(b, &x, server_name, "/", "benchmark.server", "Exit") >= 0);
+ assert_se(sd_bus_message_append(x, "t", csize) >= 0);
+ assert_se(sd_bus_send(b, x, NULL) >= 0);
+
+ sd_bus_unref(b);
+}
+
+static void client_chart(Type type, const char *address, const char *server_name, int fd) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *x = NULL;
+ size_t csize;
+ sd_bus *b;
+ int r;
+
+ r = sd_bus_new(&b);
+ assert_se(r >= 0);
+
+ if (type == TYPE_DIRECT) {
+ r = sd_bus_set_fd(b, fd, fd);
+ assert_se(r >= 0);
+ } else {
+ r = sd_bus_set_address(b, address);
+ assert_se(r >= 0);
+
+ r = sd_bus_set_bus_client(b, true);
+ assert_se(r >= 0);
+ }
+
+ r = sd_bus_start(b);
+ assert_se(r >= 0);
+
+ r = sd_bus_call_method(b, server_name, "/", "benchmark.server", "Ping", NULL, NULL, NULL);
+ assert_se(r >= 0);
+
+ switch (type) {
+ case TYPE_KDBUS:
+ printf("SIZE\tCOPY\tMEMFD\n");
+ break;
+ case TYPE_LEGACY:
+ printf("SIZE\tLEGACY\n");
+ break;
+ case TYPE_DIRECT:
+ printf("SIZE\tDIRECT\n");
+ break;
+ }
+
+ for (csize = 1; csize <= MAX_SIZE; csize *= 2) {
+ usec_t t;
+ unsigned n_copying, n_memfd;
+
+ printf("%zu\t", csize);
+
+ if (type == TYPE_KDBUS) {
+ b->use_memfd = 0;
+
+ t = now(CLOCK_MONOTONIC);
+ for (n_copying = 0;; n_copying++) {
+ transaction(b, csize, server_name);
+ if (now(CLOCK_MONOTONIC) >= t + arg_loop_usec)
+ break;
+ }
+
+ printf("%u\t", (unsigned) ((n_copying * USEC_PER_SEC) / arg_loop_usec));
+
+ b->use_memfd = -1;
+ }
+
+ t = now(CLOCK_MONOTONIC);
+ for (n_memfd = 0;; n_memfd++) {
+ transaction(b, csize, server_name);
+ if (now(CLOCK_MONOTONIC) >= t + arg_loop_usec)
+ break;
+ }
+
+ printf("%u\n", (unsigned) ((n_memfd * USEC_PER_SEC) / arg_loop_usec));
+ }
+
+ b->use_memfd = 1;
+ assert_se(sd_bus_message_new_method_call(b, &x, server_name, "/", "benchmark.server", "Exit") >= 0);
+ assert_se(sd_bus_message_append(x, "t", csize) >= 0);
+ assert_se(sd_bus_send(b, x, NULL) >= 0);
+
+ sd_bus_unref(b);
+}
+
+int main(int argc, char *argv[]) {
+ enum {
+ MODE_BISECT,
+ MODE_CHART,
+ } mode = MODE_BISECT;
+ Type type = TYPE_KDBUS;
+ int i, pair[2] = { -1, -1 };
+ _cleanup_free_ char *name = NULL, *bus_name = NULL, *address = NULL, *server_name = NULL;
+ _cleanup_close_ int bus_ref = -1;
+ const char *unique;
+ cpu_set_t cpuset;
+ size_t result;
+ sd_bus *b;
+ pid_t pid;
+ int r;
+
+ for (i = 1; i < argc; i++) {
+ if (streq(argv[i], "chart")) {
+ mode = MODE_CHART;
+ continue;
+ } else if (streq(argv[i], "legacy")) {
+ type = TYPE_LEGACY;
+ continue;
+ } else if (streq(argv[i], "direct")) {
+ type = TYPE_DIRECT;
+ continue;
+ }
+
+ assert_se(parse_sec(argv[i], &arg_loop_usec) >= 0);
+ }
+
+ assert_se(!MODE_BISECT || TYPE_KDBUS);
+
+ assert_se(arg_loop_usec > 0);
+
+ if (type == TYPE_KDBUS) {
+ assert_se(asprintf(&name, "deine-mutter-%u", (unsigned) getpid()) >= 0);
+
+ bus_ref = bus_kernel_create_bus(name, false, &bus_name);
+ if (bus_ref == -ENOENT)
+ exit(EXIT_TEST_SKIP);
+
+ assert_se(bus_ref >= 0);
+
+ address = strappend("kernel:path=", bus_name);
+ assert_se(address);
+ } else if (type == TYPE_LEGACY) {
+ const char *e;
+
+ e = secure_getenv("DBUS_SESSION_BUS_ADDRESS");
+ assert_se(e);
+
+ address = strdup(e);
+ assert_se(address);
+ }
+
+ r = sd_bus_new(&b);
+ assert_se(r >= 0);
+
+ if (type == TYPE_DIRECT) {
+ assert_se(socketpair(AF_UNIX, SOCK_STREAM, 0, pair) >= 0);
+
+ r = sd_bus_set_fd(b, pair[0], pair[0]);
+ assert_se(r >= 0);
+
+ r = sd_bus_set_server(b, true, SD_ID128_NULL);
+ assert_se(r >= 0);
+ } else {
+ r = sd_bus_set_address(b, address);
+ assert_se(r >= 0);
+
+ r = sd_bus_set_bus_client(b, true);
+ assert_se(r >= 0);
+ }
+
+ r = sd_bus_start(b);
+ assert_se(r >= 0);
+
+ if (type != TYPE_DIRECT) {
+ r = sd_bus_get_unique_name(b, &unique);
+ assert_se(r >= 0);
+
+ server_name = strdup(unique);
+ assert_se(server_name);
+ }
+
+ sync();
+ setpriority(PRIO_PROCESS, 0, -19);
+
+ pid = fork();
+ assert_se(pid >= 0);
+
+ if (pid == 0) {
+ CPU_ZERO(&cpuset);
+ CPU_SET(0, &cpuset);
+ pthread_setaffinity_np(pthread_self(), sizeof(cpu_set_t), &cpuset);
+
+ safe_close(bus_ref);
+ sd_bus_unref(b);
+
+ switch (mode) {
+ case MODE_BISECT:
+ client_bisect(address, server_name);
+ break;
+
+ case MODE_CHART:
+ client_chart(type, address, server_name, pair[1]);
+ break;
+ }
+
+ _exit(0);
+ }
+
+ CPU_ZERO(&cpuset);
+ CPU_SET(1, &cpuset);
+ pthread_setaffinity_np(pthread_self(), sizeof(cpu_set_t), &cpuset);
+
+ server(b, &result);
+
+ if (mode == MODE_BISECT)
+ printf("Copying/memfd are equally fast at %zu bytes\n", result);
+
+ assert_se(waitpid(pid, NULL, 0) == pid);
+
+ safe_close(pair[1]);
+ sd_bus_unref(b);
+
+ return 0;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/test-bus-chat.c b/src/libsystemd/libsystemd-internal/sd-bus/test-bus-chat.c
new file mode 100644
index 0000000000..1f028d2b23
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/test-bus-chat.c
@@ -0,0 +1,560 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <fcntl.h>
+#include <pthread.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <systemd/sd-bus.h>
+
+#include "alloc-util.h"
+#include "bus-error.h"
+#include "bus-internal.h"
+#include "bus-match.h"
+#include "bus-util.h"
+#include "fd-util.h"
+#include "formats-util.h"
+#include "log.h"
+#include "macro.h"
+#include "util.h"
+
+static int match_callback(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) {
+ log_info("Match triggered! interface=%s member=%s", strna(sd_bus_message_get_interface(m)), strna(sd_bus_message_get_member(m)));
+ return 0;
+}
+
+static int object_callback(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) {
+ int r;
+
+ if (sd_bus_message_is_method_error(m, NULL))
+ return 0;
+
+ if (sd_bus_message_is_method_call(m, "org.object.test", "Foobar")) {
+ log_info("Invoked Foobar() on %s", sd_bus_message_get_path(m));
+
+ r = sd_bus_reply_method_return(m, NULL);
+ if (r < 0)
+ return log_error_errno(r, "Failed to send reply: %m");
+
+ return 1;
+ }
+
+ return 0;
+}
+
+static int server_init(sd_bus **_bus) {
+ sd_bus *bus = NULL;
+ sd_id128_t id;
+ int r;
+ const char *unique;
+
+ assert_se(_bus);
+
+ r = sd_bus_open_user(&bus);
+ if (r < 0) {
+ log_error_errno(r, "Failed to connect to user bus: %m");
+ goto fail;
+ }
+
+ r = sd_bus_get_bus_id(bus, &id);
+ if (r < 0) {
+ log_error_errno(r, "Failed to get server ID: %m");
+ goto fail;
+ }
+
+ r = sd_bus_get_unique_name(bus, &unique);
+ if (r < 0) {
+ log_error_errno(r, "Failed to get unique name: %m");
+ goto fail;
+ }
+
+ log_info("Peer ID is " SD_ID128_FORMAT_STR ".", SD_ID128_FORMAT_VAL(id));
+ log_info("Unique ID: %s", unique);
+ log_info("Can send file handles: %i", sd_bus_can_send(bus, 'h'));
+
+ r = sd_bus_request_name(bus, "org.freedesktop.systemd.test", 0);
+ if (r < 0) {
+ log_error_errno(r, "Failed to acquire name: %m");
+ goto fail;
+ }
+
+ r = sd_bus_add_fallback(bus, NULL, "/foo/bar", object_callback, NULL);
+ if (r < 0) {
+ log_error_errno(r, "Failed to add object: %m");
+ goto fail;
+ }
+
+ r = sd_bus_add_match(bus, NULL, "type='signal',interface='foo.bar',member='Notify'", match_callback, NULL);
+ if (r < 0) {
+ log_error_errno(r, "Failed to add match: %m");
+ goto fail;
+ }
+
+ r = sd_bus_add_match(bus, NULL, "type='signal',interface='org.freedesktop.DBus',member='NameOwnerChanged'", match_callback, NULL);
+ if (r < 0) {
+ log_error_errno(r, "Failed to add match: %m");
+ goto fail;
+ }
+
+ bus_match_dump(&bus->match_callbacks, 0);
+
+ *_bus = bus;
+ return 0;
+
+fail:
+ sd_bus_unref(bus);
+ return r;
+}
+
+static int server(sd_bus *bus) {
+ int r;
+ bool client1_gone = false, client2_gone = false;
+
+ while (!client1_gone || !client2_gone) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+ pid_t pid = 0;
+ const char *label = NULL;
+
+ r = sd_bus_process(bus, &m);
+ if (r < 0) {
+ log_error_errno(r, "Failed to process requests: %m");
+ goto fail;
+ }
+
+ if (r == 0) {
+ r = sd_bus_wait(bus, (uint64_t) -1);
+ if (r < 0) {
+ log_error_errno(r, "Failed to wait: %m");
+ goto fail;
+ }
+
+ continue;
+ }
+
+ if (!m)
+ continue;
+
+ sd_bus_creds_get_pid(sd_bus_message_get_creds(m), &pid);
+ sd_bus_creds_get_selinux_context(sd_bus_message_get_creds(m), &label);
+ log_info("Got message! member=%s pid="PID_FMT" label=%s",
+ strna(sd_bus_message_get_member(m)),
+ pid,
+ strna(label));
+ /* bus_message_dump(m); */
+ /* sd_bus_message_rewind(m, true); */
+
+ if (sd_bus_message_is_method_call(m, "org.freedesktop.systemd.test", "LowerCase")) {
+ const char *hello;
+ _cleanup_free_ char *lowercase = NULL;
+
+ r = sd_bus_message_read(m, "s", &hello);
+ if (r < 0) {
+ log_error_errno(r, "Failed to get parameter: %m");
+ goto fail;
+ }
+
+ lowercase = strdup(hello);
+ if (!lowercase) {
+ r = log_oom();
+ goto fail;
+ }
+
+ ascii_strlower(lowercase);
+
+ r = sd_bus_reply_method_return(m, "s", lowercase);
+ if (r < 0) {
+ log_error_errno(r, "Failed to send reply: %m");
+ goto fail;
+ }
+ } else if (sd_bus_message_is_method_call(m, "org.freedesktop.systemd.test", "ExitClient1")) {
+
+ r = sd_bus_reply_method_return(m, NULL);
+ if (r < 0) {
+ log_error_errno(r, "Failed to send reply: %m");
+ goto fail;
+ }
+
+ client1_gone = true;
+ } else if (sd_bus_message_is_method_call(m, "org.freedesktop.systemd.test", "ExitClient2")) {
+
+ r = sd_bus_reply_method_return(m, NULL);
+ if (r < 0) {
+ log_error_errno(r, "Failed to send reply: %m");
+ goto fail;
+ }
+
+ client2_gone = true;
+ } else if (sd_bus_message_is_method_call(m, "org.freedesktop.systemd.test", "Slow")) {
+
+ sleep(1);
+
+ r = sd_bus_reply_method_return(m, NULL);
+ if (r < 0) {
+ log_error_errno(r, "Failed to send reply: %m");
+ goto fail;
+ }
+
+ } else if (sd_bus_message_is_method_call(m, "org.freedesktop.systemd.test", "FileDescriptor")) {
+ int fd;
+ static const char x = 'X';
+
+ r = sd_bus_message_read(m, "h", &fd);
+ if (r < 0) {
+ log_error_errno(r, "Failed to get parameter: %m");
+ goto fail;
+ }
+
+ log_info("Received fd=%d", fd);
+
+ if (write(fd, &x, 1) < 0) {
+ log_error_errno(errno, "Failed to write to fd: %m");
+ safe_close(fd);
+ goto fail;
+ }
+
+ r = sd_bus_reply_method_return(m, NULL);
+ if (r < 0) {
+ log_error_errno(r, "Failed to send reply: %m");
+ goto fail;
+ }
+
+ } else if (sd_bus_message_is_method_call(m, NULL, NULL)) {
+
+ r = sd_bus_reply_method_error(
+ m,
+ &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_UNKNOWN_METHOD, "Unknown method."));
+ if (r < 0) {
+ log_error_errno(r, "Failed to send reply: %m");
+ goto fail;
+ }
+ }
+ }
+
+ r = 0;
+
+fail:
+ if (bus) {
+ sd_bus_flush(bus);
+ sd_bus_unref(bus);
+ }
+
+ return r;
+}
+
+static void* client1(void*p) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ const char *hello;
+ int r;
+ _cleanup_close_pair_ int pp[2] = { -1, -1 };
+ char x;
+
+ r = sd_bus_open_user(&bus);
+ if (r < 0) {
+ log_error_errno(r, "Failed to connect to user bus: %m");
+ goto finish;
+ }
+
+ r = sd_bus_call_method(
+ bus,
+ "org.freedesktop.systemd.test",
+ "/",
+ "org.freedesktop.systemd.test",
+ "LowerCase",
+ &error,
+ &reply,
+ "s",
+ "HELLO");
+ if (r < 0) {
+ log_error_errno(r, "Failed to issue method call: %m");
+ goto finish;
+ }
+
+ r = sd_bus_message_read(reply, "s", &hello);
+ if (r < 0) {
+ log_error_errno(r, "Failed to get string: %m");
+ goto finish;
+ }
+
+ assert_se(streq(hello, "hello"));
+
+ if (pipe2(pp, O_CLOEXEC|O_NONBLOCK) < 0) {
+ log_error_errno(errno, "Failed to allocate pipe: %m");
+ r = -errno;
+ goto finish;
+ }
+
+ log_info("Sending fd=%d", pp[1]);
+
+ r = sd_bus_call_method(
+ bus,
+ "org.freedesktop.systemd.test",
+ "/",
+ "org.freedesktop.systemd.test",
+ "FileDescriptor",
+ &error,
+ NULL,
+ "h",
+ pp[1]);
+ if (r < 0) {
+ log_error_errno(r, "Failed to issue method call: %m");
+ goto finish;
+ }
+
+ errno = 0;
+ if (read(pp[0], &x, 1) <= 0) {
+ log_error("Failed to read from pipe: %s", errno ? strerror(errno) : "early read");
+ goto finish;
+ }
+
+ r = 0;
+
+finish:
+ if (bus) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *q;
+
+ r = sd_bus_message_new_method_call(
+ bus,
+ &q,
+ "org.freedesktop.systemd.test",
+ "/",
+ "org.freedesktop.systemd.test",
+ "ExitClient1");
+ if (r < 0)
+ log_error_errno(r, "Failed to allocate method call: %m");
+ else
+ sd_bus_send(bus, q, NULL);
+
+ }
+
+ return INT_TO_PTR(r);
+}
+
+static int quit_callback(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) {
+ bool *x = userdata;
+
+ log_error("Quit callback: %s", strerror(sd_bus_message_get_errno(m)));
+
+ *x = 1;
+ return 1;
+}
+
+static void* client2(void*p) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
+ _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ bool quit = false;
+ const char *mid;
+ int r;
+
+ r = sd_bus_open_user(&bus);
+ if (r < 0) {
+ log_error_errno(r, "Failed to connect to user bus: %m");
+ goto finish;
+ }
+
+ r = sd_bus_message_new_method_call(
+ bus,
+ &m,
+ "org.freedesktop.systemd.test",
+ "/foo/bar/waldo/piep",
+ "org.object.test",
+ "Foobar");
+ if (r < 0) {
+ log_error_errno(r, "Failed to allocate method call: %m");
+ goto finish;
+ }
+
+ r = sd_bus_send(bus, m, NULL);
+ if (r < 0) {
+ log_error("Failed to issue method call: %s", bus_error_message(&error, -r));
+ goto finish;
+ }
+
+ m = sd_bus_message_unref(m);
+
+ r = sd_bus_message_new_signal(
+ bus,
+ &m,
+ "/foobar",
+ "foo.bar",
+ "Notify");
+ if (r < 0) {
+ log_error_errno(r, "Failed to allocate signal: %m");
+ goto finish;
+ }
+
+ r = sd_bus_send(bus, m, NULL);
+ if (r < 0) {
+ log_error("Failed to issue signal: %s", bus_error_message(&error, -r));
+ goto finish;
+ }
+
+ m = sd_bus_message_unref(m);
+
+ r = sd_bus_message_new_method_call(
+ bus,
+ &m,
+ "org.freedesktop.systemd.test",
+ "/",
+ "org.freedesktop.DBus.Peer",
+ "GetMachineId");
+ if (r < 0) {
+ log_error_errno(r, "Failed to allocate method call: %m");
+ goto finish;
+ }
+
+ r = sd_bus_call(bus, m, 0, &error, &reply);
+ if (r < 0) {
+ log_error("Failed to issue method call: %s", bus_error_message(&error, -r));
+ goto finish;
+ }
+
+ r = sd_bus_message_read(reply, "s", &mid);
+ if (r < 0) {
+ log_error_errno(r, "Failed to parse machine ID: %m");
+ goto finish;
+ }
+
+ log_info("Machine ID is %s.", mid);
+
+ m = sd_bus_message_unref(m);
+
+ r = sd_bus_message_new_method_call(
+ bus,
+ &m,
+ "org.freedesktop.systemd.test",
+ "/",
+ "org.freedesktop.systemd.test",
+ "Slow");
+ if (r < 0) {
+ log_error_errno(r, "Failed to allocate method call: %m");
+ goto finish;
+ }
+
+ reply = sd_bus_message_unref(reply);
+
+ r = sd_bus_call(bus, m, 200 * USEC_PER_MSEC, &error, &reply);
+ if (r < 0)
+ log_info("Failed to issue method call: %s", bus_error_message(&error, -r));
+ else
+ log_info("Slow call succeed.");
+
+ m = sd_bus_message_unref(m);
+
+ r = sd_bus_message_new_method_call(
+ bus,
+ &m,
+ "org.freedesktop.systemd.test",
+ "/",
+ "org.freedesktop.systemd.test",
+ "Slow");
+ if (r < 0) {
+ log_error_errno(r, "Failed to allocate method call: %m");
+ goto finish;
+ }
+
+ r = sd_bus_call_async(bus, NULL, m, quit_callback, &quit, 200 * USEC_PER_MSEC);
+ if (r < 0) {
+ log_info("Failed to issue method call: %s", bus_error_message(&error, -r));
+ goto finish;
+ }
+
+ while (!quit) {
+ r = sd_bus_process(bus, NULL);
+ if (r < 0) {
+ log_error_errno(r, "Failed to process requests: %m");
+ goto finish;
+ }
+ if (r == 0) {
+ r = sd_bus_wait(bus, (uint64_t) -1);
+ if (r < 0) {
+ log_error_errno(r, "Failed to wait: %m");
+ goto finish;
+ }
+ }
+ }
+
+ r = 0;
+
+finish:
+ if (bus) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *q;
+
+ r = sd_bus_message_new_method_call(
+ bus,
+ &q,
+ "org.freedesktop.systemd.test",
+ "/",
+ "org.freedesktop.systemd.test",
+ "ExitClient2");
+ if (r < 0) {
+ log_error_errno(r, "Failed to allocate method call: %m");
+ goto finish;
+ }
+
+ (void) sd_bus_send(bus, q, NULL);
+ }
+
+ return INT_TO_PTR(r);
+}
+
+int main(int argc, char *argv[]) {
+ pthread_t c1, c2;
+ sd_bus *bus;
+ void *p;
+ int q, r;
+
+ r = server_init(&bus);
+ if (r < 0) {
+ log_info("Failed to connect to bus, skipping tests.");
+ return EXIT_TEST_SKIP;
+ }
+
+ log_info("Initialized...");
+
+ r = pthread_create(&c1, NULL, client1, bus);
+ if (r != 0)
+ return EXIT_FAILURE;
+
+ r = pthread_create(&c2, NULL, client2, bus);
+ if (r != 0)
+ return EXIT_FAILURE;
+
+ r = server(bus);
+
+ q = pthread_join(c1, &p);
+ if (q != 0)
+ return EXIT_FAILURE;
+ if (PTR_TO_INT(p) < 0)
+ return EXIT_FAILURE;
+
+ q = pthread_join(c2, &p);
+ if (q != 0)
+ return EXIT_FAILURE;
+ if (PTR_TO_INT(p) < 0)
+ return EXIT_FAILURE;
+
+ if (r < 0)
+ return EXIT_FAILURE;
+
+ return EXIT_SUCCESS;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/test-bus-cleanup.c b/src/libsystemd/libsystemd-internal/sd-bus/test-bus-cleanup.c
new file mode 100644
index 0000000000..bd4a3fbf34
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/test-bus-cleanup.c
@@ -0,0 +1,95 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Zbigniew Jędrzejewski-Szmek
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <stdio.h>
+
+#include <systemd/sd-bus.h>
+
+#include "bus-internal.h"
+#include "bus-message.h"
+#include "bus-util.h"
+#include "refcnt.h"
+
+static void test_bus_new(void) {
+ _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL;
+
+ assert_se(sd_bus_new(&bus) == 0);
+ printf("after new: refcount %u\n", REFCNT_GET(bus->n_ref));
+}
+
+static int test_bus_open(void) {
+ _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
+ int r;
+
+ r = sd_bus_open_system(&bus);
+ if (r == -ECONNREFUSED || r == -ENOENT)
+ return r;
+
+ assert_se(r >= 0);
+ printf("after open: refcount %u\n", REFCNT_GET(bus->n_ref));
+
+ return 0;
+}
+
+static void test_bus_new_method_call(void) {
+ sd_bus *bus = NULL;
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+
+ assert_se(sd_bus_open_system(&bus) >= 0);
+
+ assert_se(sd_bus_message_new_method_call(bus, &m, "a.service.name", "/an/object/path", "an.interface.name", "AMethodName") >= 0);
+
+ printf("after message_new_method_call: refcount %u\n", REFCNT_GET(bus->n_ref));
+
+ sd_bus_flush_close_unref(bus);
+ printf("after bus_flush_close_unref: refcount %u\n", m->n_ref);
+}
+
+static void test_bus_new_signal(void) {
+ sd_bus *bus = NULL;
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+
+ assert_se(sd_bus_open_system(&bus) >= 0);
+
+ assert_se(sd_bus_message_new_signal(bus, &m, "/an/object/path", "an.interface.name", "Name") >= 0);
+
+ printf("after message_new_signal: refcount %u\n", REFCNT_GET(bus->n_ref));
+
+ sd_bus_flush_close_unref(bus);
+ printf("after bus_flush_close_unref: refcount %u\n", m->n_ref);
+}
+
+int main(int argc, char **argv) {
+ int r;
+
+ log_parse_environment();
+ log_open();
+
+ test_bus_new();
+ r = test_bus_open();
+ if (r < 0) {
+ log_info("Failed to connect to bus, skipping tests.");
+ return EXIT_TEST_SKIP;
+ }
+
+ test_bus_new_method_call();
+ test_bus_new_signal();
+
+ return EXIT_SUCCESS;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/test-bus-creds.c b/src/libsystemd/libsystemd-internal/sd-bus/test-bus-creds.c
new file mode 100644
index 0000000000..c58b76c258
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/test-bus-creds.c
@@ -0,0 +1,50 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <systemd/sd-bus.h>
+
+#include "bus-dump.h"
+#include "bus-util.h"
+#include "cgroup-util.h"
+
+int main(int argc, char *argv[]) {
+ _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
+ int r;
+
+ if (cg_unified() == -ENOMEDIUM) {
+ puts("Skipping test: /sys/fs/cgroup/ not available");
+ return EXIT_TEST_SKIP;
+ }
+
+ r = sd_bus_creds_new_from_pid(&creds, 0, _SD_BUS_CREDS_ALL);
+ assert_se(r >= 0);
+
+ bus_creds_dump(creds, NULL, true);
+
+ creds = sd_bus_creds_unref(creds);
+
+ r = sd_bus_creds_new_from_pid(&creds, 1, _SD_BUS_CREDS_ALL);
+ if (r != -EACCES) {
+ assert_se(r >= 0);
+ putchar('\n');
+ bus_creds_dump(creds, NULL, true);
+ }
+
+ return 0;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/test-bus-error.c b/src/libsystemd/libsystemd-internal/sd-bus/test-bus-error.c
new file mode 100644
index 0000000000..bce3cc31c9
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/test-bus-error.c
@@ -0,0 +1,232 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <systemd/sd-bus.h>
+
+#include "bus-common-errors.h"
+#include "bus-error.h"
+#include "bus-util.h"
+#include "errno-list.h"
+
+static void test_error(void) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL, second = SD_BUS_ERROR_NULL;
+ const sd_bus_error const_error = SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_FILE_EXISTS, "const error");
+ const sd_bus_error temporarily_const_error = {
+ .name = SD_BUS_ERROR_ACCESS_DENIED,
+ .message = "oh! no",
+ ._need_free = -1
+ };
+
+ assert_se(!sd_bus_error_is_set(&error));
+ assert_se(sd_bus_error_set(&error, SD_BUS_ERROR_NOT_SUPPORTED, "xxx") == -EOPNOTSUPP);
+ assert_se(streq(error.name, SD_BUS_ERROR_NOT_SUPPORTED));
+ assert_se(streq(error.message, "xxx"));
+ assert_se(sd_bus_error_has_name(&error, SD_BUS_ERROR_NOT_SUPPORTED));
+ assert_se(sd_bus_error_get_errno(&error) == EOPNOTSUPP);
+ assert_se(sd_bus_error_is_set(&error));
+ sd_bus_error_free(&error);
+
+ /* Check with no error */
+ assert_se(!sd_bus_error_is_set(&error));
+ assert_se(sd_bus_error_setf(&error, NULL, "yyy %i", -1) == 0);
+ assert_se(error.name == NULL);
+ assert_se(error.message == NULL);
+ assert_se(!sd_bus_error_has_name(&error, SD_BUS_ERROR_FILE_NOT_FOUND));
+ assert_se(sd_bus_error_get_errno(&error) == 0);
+ assert_se(!sd_bus_error_is_set(&error));
+
+ assert_se(sd_bus_error_setf(&error, SD_BUS_ERROR_FILE_NOT_FOUND, "yyy %i", -1) == -ENOENT);
+ assert_se(streq(error.name, SD_BUS_ERROR_FILE_NOT_FOUND));
+ assert_se(streq(error.message, "yyy -1"));
+ assert_se(sd_bus_error_has_name(&error, SD_BUS_ERROR_FILE_NOT_FOUND));
+ assert_se(sd_bus_error_get_errno(&error) == ENOENT);
+ assert_se(sd_bus_error_is_set(&error));
+
+ assert_se(!sd_bus_error_is_set(&second));
+ assert_se(second._need_free == 0);
+ assert_se(error._need_free > 0);
+ assert_se(sd_bus_error_copy(&second, &error) == -ENOENT);
+ assert_se(second._need_free > 0);
+ assert_se(streq(error.name, second.name));
+ assert_se(streq(error.message, second.message));
+ assert_se(sd_bus_error_get_errno(&second) == ENOENT);
+ assert_se(sd_bus_error_has_name(&second, SD_BUS_ERROR_FILE_NOT_FOUND));
+ assert_se(sd_bus_error_is_set(&second));
+
+ sd_bus_error_free(&error);
+ sd_bus_error_free(&second);
+
+ assert_se(!sd_bus_error_is_set(&second));
+ assert_se(const_error._need_free == 0);
+ assert_se(sd_bus_error_copy(&second, &const_error) == -EEXIST);
+ assert_se(second._need_free == 0);
+ assert_se(streq(const_error.name, second.name));
+ assert_se(streq(const_error.message, second.message));
+ assert_se(sd_bus_error_get_errno(&second) == EEXIST);
+ assert_se(sd_bus_error_has_name(&second, SD_BUS_ERROR_FILE_EXISTS));
+ assert_se(sd_bus_error_is_set(&second));
+ sd_bus_error_free(&second);
+
+ assert_se(!sd_bus_error_is_set(&second));
+ assert_se(temporarily_const_error._need_free < 0);
+ assert_se(sd_bus_error_copy(&second, &temporarily_const_error) == -EACCES);
+ assert_se(second._need_free > 0);
+ assert_se(streq(temporarily_const_error.name, second.name));
+ assert_se(streq(temporarily_const_error.message, second.message));
+ assert_se(sd_bus_error_get_errno(&second) == EACCES);
+ assert_se(sd_bus_error_has_name(&second, SD_BUS_ERROR_ACCESS_DENIED));
+ assert_se(sd_bus_error_is_set(&second));
+
+ assert_se(!sd_bus_error_is_set(&error));
+ assert_se(sd_bus_error_set_const(&error, "System.Error.EUCLEAN", "Hallo") == -EUCLEAN);
+ assert_se(streq(error.name, "System.Error.EUCLEAN"));
+ assert_se(streq(error.message, "Hallo"));
+ assert_se(sd_bus_error_has_name(&error, "System.Error.EUCLEAN"));
+ assert_se(sd_bus_error_get_errno(&error) == EUCLEAN);
+ assert_se(sd_bus_error_is_set(&error));
+ sd_bus_error_free(&error);
+
+ assert_se(!sd_bus_error_is_set(&error));
+ assert_se(sd_bus_error_set_errno(&error, EBUSY) == -EBUSY);
+ assert_se(streq(error.name, "System.Error.EBUSY"));
+ assert_se(streq(error.message, strerror(EBUSY)));
+ assert_se(sd_bus_error_has_name(&error, "System.Error.EBUSY"));
+ assert_se(sd_bus_error_get_errno(&error) == EBUSY);
+ assert_se(sd_bus_error_is_set(&error));
+ sd_bus_error_free(&error);
+
+ assert_se(!sd_bus_error_is_set(&error));
+ assert_se(sd_bus_error_set_errnof(&error, EIO, "Waldi %c", 'X') == -EIO);
+ assert_se(streq(error.name, SD_BUS_ERROR_IO_ERROR));
+ assert_se(streq(error.message, "Waldi X"));
+ assert_se(sd_bus_error_has_name(&error, SD_BUS_ERROR_IO_ERROR));
+ assert_se(sd_bus_error_get_errno(&error) == EIO);
+ assert_se(sd_bus_error_is_set(&error));
+ sd_bus_error_free(&error);
+
+ /* Check with no error */
+ assert_se(!sd_bus_error_is_set(&error));
+ assert_se(sd_bus_error_set_errnof(&error, 0, "Waldi %c", 'X') == 0);
+ assert_se(error.name == NULL);
+ assert_se(error.message == NULL);
+ assert_se(!sd_bus_error_has_name(&error, SD_BUS_ERROR_IO_ERROR));
+ assert_se(sd_bus_error_get_errno(&error) == 0);
+ assert_se(!sd_bus_error_is_set(&error));
+}
+
+extern const sd_bus_error_map __start_BUS_ERROR_MAP[];
+extern const sd_bus_error_map __stop_BUS_ERROR_MAP[];
+
+static void dump_mapping_table(void) {
+ const sd_bus_error_map *m;
+
+ printf("----- errno mappings ------\n");
+ m = __start_BUS_ERROR_MAP;
+ while (m < __stop_BUS_ERROR_MAP) {
+
+ if (m->code == BUS_ERROR_MAP_END_MARKER) {
+ m = ALIGN8_PTR(m+1);
+ continue;
+ }
+
+ printf("%s -> %i/%s\n", strna(m->name), m->code, strna(errno_to_name(m->code)));
+ m++;
+ }
+ printf("---------------------------\n");
+}
+
+static void test_errno_mapping_standard(void) {
+ assert_se(sd_bus_error_set(NULL, "System.Error.EUCLEAN", NULL) == -EUCLEAN);
+ assert_se(sd_bus_error_set(NULL, "System.Error.EBUSY", NULL) == -EBUSY);
+ assert_se(sd_bus_error_set(NULL, "System.Error.EINVAL", NULL) == -EINVAL);
+ assert_se(sd_bus_error_set(NULL, "System.Error.WHATSIT", NULL) == -EIO);
+}
+
+BUS_ERROR_MAP_ELF_REGISTER const sd_bus_error_map test_errors[] = {
+ SD_BUS_ERROR_MAP("org.freedesktop.custom-dbus-error", 5),
+ SD_BUS_ERROR_MAP("org.freedesktop.custom-dbus-error-2", 52),
+ SD_BUS_ERROR_MAP_END
+};
+
+BUS_ERROR_MAP_ELF_REGISTER const sd_bus_error_map test_errors2[] = {
+ SD_BUS_ERROR_MAP("org.freedesktop.custom-dbus-error-3", 33),
+ SD_BUS_ERROR_MAP("org.freedesktop.custom-dbus-error-4", 44),
+ SD_BUS_ERROR_MAP("org.freedesktop.custom-dbus-error-33", 333),
+ SD_BUS_ERROR_MAP_END
+};
+
+static const sd_bus_error_map test_errors3[] = {
+ SD_BUS_ERROR_MAP("org.freedesktop.custom-dbus-error-88", 888),
+ SD_BUS_ERROR_MAP("org.freedesktop.custom-dbus-error-99", 999),
+ SD_BUS_ERROR_MAP_END
+};
+
+static const sd_bus_error_map test_errors4[] = {
+ SD_BUS_ERROR_MAP("org.freedesktop.custom-dbus-error-77", 777),
+ SD_BUS_ERROR_MAP("org.freedesktop.custom-dbus-error-78", 778),
+ SD_BUS_ERROR_MAP_END
+};
+
+static const sd_bus_error_map test_errors_bad1[] = {
+ SD_BUS_ERROR_MAP("org.freedesktop.custom-dbus-error-1", 0),
+ SD_BUS_ERROR_MAP_END
+};
+
+static const sd_bus_error_map test_errors_bad2[] = {
+ SD_BUS_ERROR_MAP("org.freedesktop.custom-dbus-error-1", -1),
+ SD_BUS_ERROR_MAP_END
+};
+
+static void test_errno_mapping_custom(void) {
+ assert_se(sd_bus_error_set(NULL, "org.freedesktop.custom-dbus-error", NULL) == -5);
+ assert_se(sd_bus_error_set(NULL, "org.freedesktop.custom-dbus-error-2", NULL) == -52);
+ assert_se(sd_bus_error_set(NULL, "org.freedesktop.custom-dbus-error-x", NULL) == -EIO);
+ assert_se(sd_bus_error_set(NULL, "org.freedesktop.custom-dbus-error-33", NULL) == -333);
+
+ assert_se(sd_bus_error_set(NULL, "org.freedesktop.custom-dbus-error-88", NULL) == -EIO);
+ assert_se(sd_bus_error_set(NULL, "org.freedesktop.custom-dbus-error-99", NULL) == -EIO);
+ assert_se(sd_bus_error_set(NULL, "org.freedesktop.custom-dbus-error-77", NULL) == -EIO);
+
+ assert_se(sd_bus_error_add_map(test_errors3) > 0);
+ assert_se(sd_bus_error_set(NULL, "org.freedesktop.custom-dbus-error-88", NULL) == -888);
+ assert_se(sd_bus_error_add_map(test_errors4) > 0);
+ assert_se(sd_bus_error_add_map(test_errors4) == 0);
+ assert_se(sd_bus_error_add_map(test_errors3) == 0);
+
+ assert_se(sd_bus_error_set(NULL, "org.freedesktop.custom-dbus-error-99", NULL) == -999);
+ assert_se(sd_bus_error_set(NULL, "org.freedesktop.custom-dbus-error-77", NULL) == -777);
+ assert_se(sd_bus_error_set(NULL, "org.freedesktop.custom-dbus-error-78", NULL) == -778);
+ assert_se(sd_bus_error_set(NULL, "org.freedesktop.custom-dbus-error-2", NULL) == -52);
+ assert_se(sd_bus_error_set(NULL, "org.freedesktop.custom-dbus-error-y", NULL) == -EIO);
+
+ assert_se(sd_bus_error_set(NULL, BUS_ERROR_NO_SUCH_UNIT, NULL) == -ENOENT);
+
+ assert_se(sd_bus_error_add_map(test_errors_bad1) == -EINVAL);
+ assert_se(sd_bus_error_add_map(test_errors_bad2) == -EINVAL);
+}
+
+int main(int argc, char *argv[]) {
+ dump_mapping_table();
+
+ test_error();
+ test_errno_mapping_standard();
+ test_errno_mapping_custom();
+
+ return 0;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/test-bus-gvariant.c b/src/libsystemd/libsystemd-internal/sd-bus/test-bus-gvariant.c
new file mode 100644
index 0000000000..3c9ec9fef0
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/test-bus-gvariant.c
@@ -0,0 +1,224 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#ifdef HAVE_GLIB
+#include <glib.h>
+#endif
+
+#include <systemd/sd-bus.h>
+
+#include "alloc-util.h"
+#include "bus-dump.h"
+#include "bus-gvariant.h"
+#include "bus-internal.h"
+#include "bus-message.h"
+#include "bus-util.h"
+#include "macro.h"
+#include "util.h"
+
+static void test_bus_gvariant_is_fixed_size(void) {
+ assert_se(bus_gvariant_is_fixed_size("") > 0);
+ assert_se(bus_gvariant_is_fixed_size("()") > 0);
+ assert_se(bus_gvariant_is_fixed_size("y") > 0);
+ assert_se(bus_gvariant_is_fixed_size("u") > 0);
+ assert_se(bus_gvariant_is_fixed_size("b") > 0);
+ assert_se(bus_gvariant_is_fixed_size("n") > 0);
+ assert_se(bus_gvariant_is_fixed_size("q") > 0);
+ assert_se(bus_gvariant_is_fixed_size("i") > 0);
+ assert_se(bus_gvariant_is_fixed_size("t") > 0);
+ assert_se(bus_gvariant_is_fixed_size("d") > 0);
+ assert_se(bus_gvariant_is_fixed_size("s") == 0);
+ assert_se(bus_gvariant_is_fixed_size("o") == 0);
+ assert_se(bus_gvariant_is_fixed_size("g") == 0);
+ assert_se(bus_gvariant_is_fixed_size("h") > 0);
+ assert_se(bus_gvariant_is_fixed_size("ay") == 0);
+ assert_se(bus_gvariant_is_fixed_size("v") == 0);
+ assert_se(bus_gvariant_is_fixed_size("(u)") > 0);
+ assert_se(bus_gvariant_is_fixed_size("(uuuuy)") > 0);
+ assert_se(bus_gvariant_is_fixed_size("(uusuuy)") == 0);
+ assert_se(bus_gvariant_is_fixed_size("a{ss}") == 0);
+ assert_se(bus_gvariant_is_fixed_size("((u)yyy(b(iiii)))") > 0);
+ assert_se(bus_gvariant_is_fixed_size("((u)yyy(b(iiivi)))") == 0);
+}
+
+static void test_bus_gvariant_get_size(void) {
+ assert_se(bus_gvariant_get_size("") == 0);
+ assert_se(bus_gvariant_get_size("()") == 1);
+ assert_se(bus_gvariant_get_size("y") == 1);
+ assert_se(bus_gvariant_get_size("u") == 4);
+ assert_se(bus_gvariant_get_size("b") == 1);
+ assert_se(bus_gvariant_get_size("n") == 2);
+ assert_se(bus_gvariant_get_size("q") == 2);
+ assert_se(bus_gvariant_get_size("i") == 4);
+ assert_se(bus_gvariant_get_size("t") == 8);
+ assert_se(bus_gvariant_get_size("d") == 8);
+ assert_se(bus_gvariant_get_size("s") < 0);
+ assert_se(bus_gvariant_get_size("o") < 0);
+ assert_se(bus_gvariant_get_size("g") < 0);
+ assert_se(bus_gvariant_get_size("h") == 4);
+ assert_se(bus_gvariant_get_size("ay") < 0);
+ assert_se(bus_gvariant_get_size("v") < 0);
+ assert_se(bus_gvariant_get_size("(u)") == 4);
+ assert_se(bus_gvariant_get_size("(uuuuy)") == 20);
+ assert_se(bus_gvariant_get_size("(uusuuy)") < 0);
+ assert_se(bus_gvariant_get_size("a{ss}") < 0);
+ assert_se(bus_gvariant_get_size("((u)yyy(b(iiii)))") == 28);
+ assert_se(bus_gvariant_get_size("((u)yyy(b(iiivi)))") < 0);
+ assert_se(bus_gvariant_get_size("((b)(t))") == 16);
+ assert_se(bus_gvariant_get_size("((b)(b)(t))") == 16);
+ assert_se(bus_gvariant_get_size("(bt)") == 16);
+ assert_se(bus_gvariant_get_size("((t)(b))") == 16);
+ assert_se(bus_gvariant_get_size("(tb)") == 16);
+ assert_se(bus_gvariant_get_size("((b)(b))") == 2);
+ assert_se(bus_gvariant_get_size("((t)(t))") == 16);
+}
+
+static void test_bus_gvariant_get_alignment(void) {
+ assert_se(bus_gvariant_get_alignment("") == 1);
+ assert_se(bus_gvariant_get_alignment("()") == 1);
+ assert_se(bus_gvariant_get_alignment("y") == 1);
+ assert_se(bus_gvariant_get_alignment("b") == 1);
+ assert_se(bus_gvariant_get_alignment("u") == 4);
+ assert_se(bus_gvariant_get_alignment("s") == 1);
+ assert_se(bus_gvariant_get_alignment("o") == 1);
+ assert_se(bus_gvariant_get_alignment("g") == 1);
+ assert_se(bus_gvariant_get_alignment("v") == 8);
+ assert_se(bus_gvariant_get_alignment("h") == 4);
+ assert_se(bus_gvariant_get_alignment("i") == 4);
+ assert_se(bus_gvariant_get_alignment("t") == 8);
+ assert_se(bus_gvariant_get_alignment("x") == 8);
+ assert_se(bus_gvariant_get_alignment("q") == 2);
+ assert_se(bus_gvariant_get_alignment("n") == 2);
+ assert_se(bus_gvariant_get_alignment("d") == 8);
+ assert_se(bus_gvariant_get_alignment("ay") == 1);
+ assert_se(bus_gvariant_get_alignment("as") == 1);
+ assert_se(bus_gvariant_get_alignment("au") == 4);
+ assert_se(bus_gvariant_get_alignment("an") == 2);
+ assert_se(bus_gvariant_get_alignment("ans") == 2);
+ assert_se(bus_gvariant_get_alignment("ant") == 8);
+ assert_se(bus_gvariant_get_alignment("(ss)") == 1);
+ assert_se(bus_gvariant_get_alignment("(ssu)") == 4);
+ assert_se(bus_gvariant_get_alignment("a(ssu)") == 4);
+ assert_se(bus_gvariant_get_alignment("(u)") == 4);
+ assert_se(bus_gvariant_get_alignment("(uuuuy)") == 4);
+ assert_se(bus_gvariant_get_alignment("(uusuuy)") == 4);
+ assert_se(bus_gvariant_get_alignment("a{ss}") == 1);
+ assert_se(bus_gvariant_get_alignment("((u)yyy(b(iiii)))") == 4);
+ assert_se(bus_gvariant_get_alignment("((u)yyy(b(iiivi)))") == 8);
+ assert_se(bus_gvariant_get_alignment("((b)(t))") == 8);
+ assert_se(bus_gvariant_get_alignment("((b)(b)(t))") == 8);
+ assert_se(bus_gvariant_get_alignment("(bt)") == 8);
+ assert_se(bus_gvariant_get_alignment("((t)(b))") == 8);
+ assert_se(bus_gvariant_get_alignment("(tb)") == 8);
+ assert_se(bus_gvariant_get_alignment("((b)(b))") == 1);
+ assert_se(bus_gvariant_get_alignment("((t)(t))") == 8);
+}
+
+static void test_marshal(void) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *n = NULL;
+ _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
+ _cleanup_free_ void *blob;
+ size_t sz;
+ int r;
+
+ r = sd_bus_open_system(&bus);
+ if (r < 0)
+ exit(EXIT_TEST_SKIP);
+
+ bus->message_version = 2; /* dirty hack to enable gvariant */
+
+ assert_se(sd_bus_message_new_method_call(bus, &m, "a.service.name", "/an/object/path/which/is/really/really/long/so/that/we/hit/the/eight/bit/boundary/by/quite/some/margin/to/test/this/stuff/that/it/really/works", "an.interface.name", "AMethodName") >= 0);
+
+ assert_cc(sizeof(struct bus_header) == 16);
+
+ assert_se(sd_bus_message_append(m,
+ "a(usv)", 3,
+ 4711, "first-string-parameter", "(st)", "X", (uint64_t) 1111,
+ 4712, "second-string-parameter", "(a(si))", 2, "Y", 5, "Z", 6,
+ 4713, "third-string-parameter", "(uu)", 1, 2) >= 0);
+
+ assert_se(bus_message_seal(m, 4711, 0) >= 0);
+
+#ifdef HAVE_GLIB
+ {
+ GVariant *v;
+ char *t;
+
+#if !defined(GLIB_VERSION_2_36)
+ g_type_init();
+#endif
+
+ v = g_variant_new_from_data(G_VARIANT_TYPE("(yyyyuta{tv})"), m->header, sizeof(struct bus_header) + m->fields_size, false, NULL, NULL);
+ assert_se(g_variant_is_normal_form(v));
+ t = g_variant_print(v, TRUE);
+ printf("%s\n", t);
+ g_free(t);
+ g_variant_unref(v);
+
+ v = g_variant_new_from_data(G_VARIANT_TYPE("(a(usv))"), m->body.data, m->user_body_size, false, NULL, NULL);
+ assert_se(g_variant_is_normal_form(v));
+ t = g_variant_print(v, TRUE);
+ printf("%s\n", t);
+ g_free(t);
+ g_variant_unref(v);
+ }
+#endif
+
+ assert_se(bus_message_dump(m, NULL, BUS_MESSAGE_DUMP_WITH_HEADER) >= 0);
+
+ assert_se(bus_message_get_blob(m, &blob, &sz) >= 0);
+
+#ifdef HAVE_GLIB
+ {
+ GVariant *v;
+ char *t;
+
+ v = g_variant_new_from_data(G_VARIANT_TYPE("(yyyyuta{tv}v)"), blob, sz, false, NULL, NULL);
+ assert_se(g_variant_is_normal_form(v));
+ t = g_variant_print(v, TRUE);
+ printf("%s\n", t);
+ g_free(t);
+ g_variant_unref(v);
+ }
+#endif
+
+ assert_se(bus_message_from_malloc(bus, blob, sz, NULL, 0, NULL, &n) >= 0);
+ blob = NULL;
+
+ assert_se(bus_message_dump(n, NULL, BUS_MESSAGE_DUMP_WITH_HEADER) >= 0);
+
+ m = sd_bus_message_unref(m);
+
+ assert_se(sd_bus_message_new_method_call(bus, &m, "a.x", "/a/x", "a.x", "Ax") >= 0);
+
+ assert_se(sd_bus_message_append(m, "as", 0) >= 0);
+
+ assert_se(bus_message_seal(m, 4712, 0) >= 0);
+ assert_se(bus_message_dump(m, NULL, BUS_MESSAGE_DUMP_WITH_HEADER) >= 0);
+}
+
+int main(int argc, char *argv[]) {
+
+ test_bus_gvariant_is_fixed_size();
+ test_bus_gvariant_get_size();
+ test_bus_gvariant_get_alignment();
+ test_marshal();
+
+ return 0;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/test-bus-introspect.c b/src/libsystemd/libsystemd-internal/sd-bus/test-bus-introspect.c
new file mode 100644
index 0000000000..4425cfae26
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/test-bus-introspect.c
@@ -0,0 +1,63 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "bus-introspect.h"
+#include "log.h"
+
+static int prop_get(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) {
+ return -EINVAL;
+}
+
+static int prop_set(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) {
+ return -EINVAL;
+}
+
+static const sd_bus_vtable vtable[] = {
+ SD_BUS_VTABLE_START(0),
+ SD_BUS_METHOD("Hello", "ssas", "a(uu)", NULL, 0),
+ SD_BUS_METHOD("DeprecatedHello", "", "", NULL, SD_BUS_VTABLE_DEPRECATED),
+ SD_BUS_METHOD("DeprecatedHelloNoReply", "", "", NULL, SD_BUS_VTABLE_DEPRECATED|SD_BUS_VTABLE_METHOD_NO_REPLY),
+ SD_BUS_SIGNAL("Wowza", "sss", 0),
+ SD_BUS_SIGNAL("DeprecatedWowza", "ut", SD_BUS_VTABLE_DEPRECATED),
+ SD_BUS_WRITABLE_PROPERTY("AProperty", "s", prop_get, prop_set, 0, 0),
+ SD_BUS_PROPERTY("AReadOnlyDeprecatedProperty", "(ut)", prop_get, 0, SD_BUS_VTABLE_DEPRECATED),
+ SD_BUS_PROPERTY("ChangingProperty", "t", prop_get, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+ SD_BUS_PROPERTY("Invalidating", "t", prop_get, 0, SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
+ SD_BUS_PROPERTY("Constant", "t", prop_get, 0, SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_PROPERTY_EXPLICIT),
+ SD_BUS_VTABLE_END
+};
+
+int main(int argc, char *argv[]) {
+ struct introspect intro;
+
+ log_set_max_level(LOG_DEBUG);
+
+ assert_se(introspect_begin(&intro, false) >= 0);
+
+ fprintf(intro.f, " <interface name=\"org.foo\">\n");
+ assert_se(introspect_write_interface(&intro, vtable) >= 0);
+ fputs(" </interface>\n", intro.f);
+
+ fflush(intro.f);
+ fputs(intro.introspection, stdout);
+
+ introspect_free(&intro);
+
+ return 0;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/test-bus-kernel-bloom.c b/src/libsystemd/libsystemd-internal/sd-bus/test-bus-kernel-bloom.c
new file mode 100644
index 0000000000..f16e14a310
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/test-bus-kernel-bloom.c
@@ -0,0 +1,141 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <systemd/sd-bus.h>
+
+#include "alloc-util.h"
+#include "bus-kernel.h"
+#include "bus-util.h"
+#include "fd-util.h"
+#include "log.h"
+#include "util.h"
+
+static int test_match(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) {
+ int *found = userdata;
+
+ *found = 1;
+
+ return 0;
+}
+
+static void test_one(
+ const char *path,
+ const char *interface,
+ const char *member,
+ bool as_list,
+ const char *arg0,
+ const char *match,
+ bool good) {
+
+ _cleanup_close_ int bus_ref = -1;
+ _cleanup_free_ char *name = NULL, *bus_name = NULL, *address = NULL;
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+ sd_bus *a, *b;
+ int r, found = 0;
+
+ assert_se(asprintf(&name, "deine-mutter-%u", (unsigned) getpid()) >= 0);
+
+ bus_ref = bus_kernel_create_bus(name, false, &bus_name);
+ if (bus_ref == -ENOENT)
+ exit(EXIT_TEST_SKIP);
+
+ assert_se(bus_ref >= 0);
+
+ address = strappend("kernel:path=", bus_name);
+ assert_se(address);
+
+ r = sd_bus_new(&a);
+ assert_se(r >= 0);
+
+ r = sd_bus_new(&b);
+ assert_se(r >= 0);
+
+ r = sd_bus_set_address(a, address);
+ assert_se(r >= 0);
+
+ r = sd_bus_set_address(b, address);
+ assert_se(r >= 0);
+
+ r = sd_bus_start(a);
+ assert_se(r >= 0);
+
+ r = sd_bus_start(b);
+ assert_se(r >= 0);
+
+ log_debug("match");
+ r = sd_bus_add_match(b, NULL, match, test_match, &found);
+ assert_se(r >= 0);
+
+ log_debug("signal");
+
+ if (as_list)
+ r = sd_bus_emit_signal(a, path, interface, member, "as", 1, arg0);
+ else
+ r = sd_bus_emit_signal(a, path, interface, member, "s", arg0);
+ assert_se(r >= 0);
+
+ r = sd_bus_process(b, &m);
+ assert_se(r >= 0 && good == !!found);
+
+ sd_bus_unref(a);
+ sd_bus_unref(b);
+}
+
+int main(int argc, char *argv[]) {
+ log_set_max_level(LOG_DEBUG);
+
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "", true);
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path='/foo/bar/waldo'", true);
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path='/foo/bar/waldo/tuut'", false);
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "interface='waldo.com'", true);
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "member='Piep'", true);
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "member='Pi_ep'", false);
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "arg0='foobar'", true);
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "arg0='foo_bar'", false);
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", true, "foobar", "arg0='foobar'", false);
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", true, "foobar", "arg0='foo_bar'", false);
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", true, "foobar", "arg0has='foobar'", true);
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", true, "foobar", "arg0has='foo_bar'", false);
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path='/foo/bar/waldo',interface='waldo.com',member='Piep',arg0='foobar'", true);
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path='/foo/bar/waldo',interface='waldo.com',member='Piep',arg0='foobar2'", false);
+
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path='/foo/bar/waldo'", true);
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path='/foo/bar'", false);
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path='/foo'", false);
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path='/'", false);
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path='/foo/bar/waldo/quux'", false);
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path_namespace='/foo/bar/waldo'", true);
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path_namespace='/foo/bar'", true);
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path_namespace='/foo'", true);
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path_namespace='/'", true);
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path_namespace='/quux'", false);
+ test_one("/", "waldo.com", "Piep", false, "foobar", "path_namespace='/'", true);
+
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path='/foo/bar/waldo/'", false);
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path='/foo/'", false);
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path_namespace='/foo/bar/waldo/'", false);
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path_namespace='/foo/'", true);
+
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "/foo/bar/waldo", "arg0path='/foo/'", true);
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "/foo", "arg0path='/foo'", true);
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "/foo", "arg0path='/foo/bar/waldo'", false);
+ test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "/foo/", "arg0path='/foo/bar/waldo'", true);
+
+ return 0;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/test-bus-kernel.c b/src/libsystemd/libsystemd-internal/sd-bus/test-bus-kernel.c
new file mode 100644
index 0000000000..2a5ba60cc9
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/test-bus-kernel.c
@@ -0,0 +1,190 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <fcntl.h>
+
+#include <systemd/sd-bus.h>
+
+#include "alloc-util.h"
+#include "bus-dump.h"
+#include "bus-kernel.h"
+#include "bus-util.h"
+#include "fd-util.h"
+#include "log.h"
+#include "util.h"
+
+int main(int argc, char *argv[]) {
+ _cleanup_close_ int bus_ref = -1;
+ _cleanup_free_ char *name = NULL, *bus_name = NULL, *address = NULL, *bname = NULL;
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ const char *ua = NULL, *ub = NULL, *the_string = NULL;
+ sd_bus *a, *b;
+ int r, pipe_fds[2];
+ const char *nn;
+
+ log_set_max_level(LOG_DEBUG);
+
+ assert_se(asprintf(&name, "deine-mutter-%u", (unsigned) getpid()) >= 0);
+
+ bus_ref = bus_kernel_create_bus(name, false, &bus_name);
+ if (bus_ref == -ENOENT)
+ return EXIT_TEST_SKIP;
+
+ assert_se(bus_ref >= 0);
+
+ address = strappend("kernel:path=", bus_name);
+ assert_se(address);
+
+ r = sd_bus_new(&a);
+ assert_se(r >= 0);
+
+ r = sd_bus_new(&b);
+ assert_se(r >= 0);
+
+ r = sd_bus_set_description(a, "a");
+ assert_se(r >= 0);
+
+ r = sd_bus_set_address(a, address);
+ assert_se(r >= 0);
+
+ r = sd_bus_set_address(b, address);
+ assert_se(r >= 0);
+
+ assert_se(sd_bus_negotiate_timestamp(a, 1) >= 0);
+ assert_se(sd_bus_negotiate_creds(a, true, _SD_BUS_CREDS_ALL) >= 0);
+
+ assert_se(sd_bus_negotiate_timestamp(b, 0) >= 0);
+ assert_se(sd_bus_negotiate_creds(b, true, 0) >= 0);
+
+ r = sd_bus_start(a);
+ assert_se(r >= 0);
+
+ r = sd_bus_start(b);
+ assert_se(r >= 0);
+
+ assert_se(sd_bus_negotiate_timestamp(b, 1) >= 0);
+ assert_se(sd_bus_negotiate_creds(b, true, _SD_BUS_CREDS_ALL) >= 0);
+
+ r = sd_bus_get_unique_name(a, &ua);
+ assert_se(r >= 0);
+ printf("unique a: %s\n", ua);
+
+ r = sd_bus_get_description(a, &nn);
+ assert_se(r >= 0);
+ printf("name of a: %s\n", nn);
+
+ r = sd_bus_get_unique_name(b, &ub);
+ assert_se(r >= 0);
+ printf("unique b: %s\n", ub);
+
+ r = sd_bus_get_description(b, &nn);
+ assert_se(r >= 0);
+ printf("name of b: %s\n", nn);
+
+ assert_se(bus_kernel_get_bus_name(b, &bname) >= 0);
+ assert_se(endswith(bname, name));
+
+ r = sd_bus_call_method(a, "this.doesnt.exist", "/foo", "meh.mah", "muh", &error, NULL, "s", "yayayay");
+ assert_se(sd_bus_error_has_name(&error, SD_BUS_ERROR_SERVICE_UNKNOWN));
+ assert_se(r == -EHOSTUNREACH);
+
+ r = sd_bus_add_match(b, NULL, "interface='waldo.com',member='Piep'", NULL, NULL);
+ assert_se(r >= 0);
+
+ r = sd_bus_emit_signal(a, "/foo/bar/waldo", "waldo.com", "Piep", "sss", "I am a string", "/this/is/a/path", "and.this.a.domain.name");
+ assert_se(r >= 0);
+
+ r = sd_bus_try_close(b);
+ assert_se(r == -EBUSY);
+
+ r = sd_bus_process_priority(b, -10, &m);
+ assert_se(r == 0);
+
+ r = sd_bus_process(b, &m);
+ assert_se(r > 0);
+ assert_se(m);
+
+ bus_message_dump(m, stdout, BUS_MESSAGE_DUMP_WITH_HEADER);
+ assert_se(sd_bus_message_rewind(m, true) >= 0);
+
+ r = sd_bus_message_read(m, "s", &the_string);
+ assert_se(r >= 0);
+ assert_se(streq(the_string, "I am a string"));
+
+ sd_bus_message_unref(m);
+ m = NULL;
+
+ r = sd_bus_request_name(a, "net.x0pointer.foobar", 0);
+ assert_se(r >= 0);
+
+ r = sd_bus_message_new_method_call(b, &m, "net.x0pointer.foobar", "/a/path", "an.inter.face", "AMethod");
+ assert_se(r >= 0);
+
+ assert_se(pipe2(pipe_fds, O_CLOEXEC) >= 0);
+
+ assert_se(write(pipe_fds[1], "x", 1) == 1);
+
+ pipe_fds[1] = safe_close(pipe_fds[1]);
+
+ r = sd_bus_message_append(m, "h", pipe_fds[0]);
+ assert_se(r >= 0);
+
+ pipe_fds[0] = safe_close(pipe_fds[0]);
+
+ r = sd_bus_send(b, m, NULL);
+ assert_se(r >= 0);
+
+ for (;;) {
+ sd_bus_message_unref(m);
+ m = NULL;
+ r = sd_bus_process(a, &m);
+ assert_se(r > 0);
+ assert_se(m);
+
+ bus_message_dump(m, stdout, BUS_MESSAGE_DUMP_WITH_HEADER);
+ assert_se(sd_bus_message_rewind(m, true) >= 0);
+
+ if (sd_bus_message_is_method_call(m, "an.inter.face", "AMethod")) {
+ int fd;
+ char x;
+
+ r = sd_bus_message_read(m, "h", &fd);
+ assert_se(r >= 0);
+
+ assert_se(read(fd, &x, 1) == 1);
+ assert_se(x == 'x');
+ break;
+ }
+ }
+
+ r = sd_bus_release_name(a, "net.x0pointer.foobar");
+ assert_se(r >= 0);
+
+ r = sd_bus_release_name(a, "net.x0pointer.foobar");
+ assert_se(r == -ESRCH);
+
+ r = sd_bus_try_close(a);
+ assert_se(r >= 0);
+
+ sd_bus_unref(a);
+ sd_bus_unref(b);
+
+ return 0;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/test-bus-marshal.c b/src/libsystemd/libsystemd-internal/sd-bus/test-bus-marshal.c
new file mode 100644
index 0000000000..45db4764a0
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/test-bus-marshal.c
@@ -0,0 +1,432 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <math.h>
+#include <stdlib.h>
+
+#ifdef HAVE_GLIB
+#include <gio/gio.h>
+#endif
+
+#ifdef HAVE_DBUS
+#include <dbus/dbus.h>
+#endif
+
+#include <systemd/sd-bus.h>
+
+#include "alloc-util.h"
+#include "bus-dump.h"
+#include "bus-label.h"
+#include "bus-message.h"
+#include "bus-util.h"
+#include "fd-util.h"
+#include "hexdecoct.h"
+#include "log.h"
+#include "util.h"
+
+static void test_bus_path_encode_unique(void) {
+ _cleanup_free_ char *a = NULL, *b = NULL, *c = NULL, *d = NULL, *e = NULL;
+
+ assert_se(bus_path_encode_unique(NULL, "/foo/bar", "some.sender", "a.suffix", &a) >= 0 && streq_ptr(a, "/foo/bar/some_2esender/a_2esuffix"));
+ assert_se(bus_path_decode_unique(a, "/foo/bar", &b, &c) > 0 && streq_ptr(b, "some.sender") && streq_ptr(c, "a.suffix"));
+ assert_se(bus_path_decode_unique(a, "/bar/foo", &d, &d) == 0 && !d);
+ assert_se(bus_path_decode_unique("/foo/bar/onlyOneSuffix", "/foo/bar", &d, &d) == 0 && !d);
+ assert_se(bus_path_decode_unique("/foo/bar/_/_", "/foo/bar", &d, &e) > 0 && streq_ptr(d, "") && streq_ptr(e, ""));
+}
+
+static void test_bus_path_encode(void) {
+ _cleanup_free_ char *a = NULL, *b = NULL, *c = NULL, *d = NULL, *e = NULL, *f = NULL;
+
+ assert_se(sd_bus_path_encode("/foo/bar", "waldo", &a) >= 0 && streq(a, "/foo/bar/waldo"));
+ assert_se(sd_bus_path_decode(a, "/waldo", &b) == 0 && b == NULL);
+ assert_se(sd_bus_path_decode(a, "/foo/bar", &b) > 0 && streq(b, "waldo"));
+
+ assert_se(sd_bus_path_encode("xxxx", "waldo", &c) < 0);
+ assert_se(sd_bus_path_encode("/foo/", "waldo", &c) < 0);
+
+ assert_se(sd_bus_path_encode("/foo/bar", "", &c) >= 0 && streq(c, "/foo/bar/_"));
+ assert_se(sd_bus_path_decode(c, "/foo/bar", &d) > 0 && streq(d, ""));
+
+ assert_se(sd_bus_path_encode("/foo/bar", "foo.bar", &e) >= 0 && streq(e, "/foo/bar/foo_2ebar"));
+ assert_se(sd_bus_path_decode(e, "/foo/bar", &f) > 0 && streq(f, "foo.bar"));
+}
+
+static void test_bus_path_encode_many(void) {
+ _cleanup_free_ char *a = NULL, *b = NULL, *c = NULL, *d = NULL, *e = NULL, *f = NULL;
+
+ assert_se(sd_bus_path_decode_many("/foo/bar", "/prefix/%", NULL) == 0);
+ assert_se(sd_bus_path_decode_many("/prefix/bar", "/prefix/%bar", NULL) == 1);
+ assert_se(sd_bus_path_decode_many("/foo/bar", "/prefix/%/suffix", NULL) == 0);
+ assert_se(sd_bus_path_decode_many("/prefix/foobar/suffix", "/prefix/%/suffix", &a) == 1 && streq_ptr(a, "foobar"));
+ assert_se(sd_bus_path_decode_many("/prefix/one_foo_two/mid/three_bar_four/suffix", "/prefix/one_%_two/mid/three_%_four/suffix", &b, &c) == 1 && streq_ptr(b, "foo") && streq_ptr(c, "bar"));
+ assert_se(sd_bus_path_decode_many("/prefix/one_foo_two/mid/three_bar_four/suffix", "/prefix/one_%_two/mid/three_%_four/suffix", NULL, &d) == 1 && streq_ptr(d, "bar"));
+
+ assert_se(sd_bus_path_decode_many("/foo/bar", "/foo/bar/%", NULL) == 0);
+ assert_se(sd_bus_path_decode_many("/foo/bar/suffix", "/foo/bar%", NULL) == 0);
+ assert_se(sd_bus_path_decode_many("/foo/bar/suffix", "/foo/%/bar", NULL) == 0);
+ assert_se(sd_bus_path_decode_many("/foo/bar/suffix", "/foo/%bar", NULL) == 0);
+ assert_se(sd_bus_path_decode_many("/foo/bar/suffix", "/foo/bar/suffix") == 1);
+ assert_se(sd_bus_path_decode_many("/foo/bar/suffix", "/foo/%%/suffix", NULL, NULL) == 0); /* multiple '%' are treated verbatim */
+ assert_se(sd_bus_path_decode_many("/foo/bar/suffix", "/foo/%/suffi", NULL) == 0);
+ assert_se(sd_bus_path_decode_many("/foo/bar/suffix", "/foo/%/suffix", &e) == 1 && streq_ptr(e, "bar"));
+ assert_se(sd_bus_path_decode_many("/foo/bar/suffix", "/foo/%/%", NULL, NULL) == 1);
+ assert_se(sd_bus_path_decode_many("/foo/bar/suffix", "/%/%/%", NULL, NULL, NULL) == 1);
+ assert_se(sd_bus_path_decode_many("/foo/bar/suffix", "%/%/%", NULL, NULL, NULL) == 0);
+ assert_se(sd_bus_path_decode_many("/foo/bar/suffix", "/%/%", NULL, NULL) == 0);
+ assert_se(sd_bus_path_decode_many("/foo/bar/suffix", "/%/%/", NULL, NULL) == 0);
+ assert_se(sd_bus_path_decode_many("/foo/bar/suffix", "/%/", NULL) == 0);
+ assert_se(sd_bus_path_decode_many("/foo/bar/suffix", "/%", NULL) == 0);
+ assert_se(sd_bus_path_decode_many("/foo/bar/suffix", "%", NULL) == 0);
+
+ assert_se(sd_bus_path_encode_many(&f, "/prefix/one_%_two/mid/three_%_four/suffix", "foo", "bar") >= 0 && streq_ptr(f, "/prefix/one_foo_two/mid/three_bar_four/suffix"));
+}
+
+static void test_bus_label_escape_one(const char *a, const char *b) {
+ _cleanup_free_ char *t = NULL, *x = NULL, *y = NULL;
+
+ assert_se(t = bus_label_escape(a));
+ assert_se(streq(t, b));
+
+ assert_se(x = bus_label_unescape(t));
+ assert_se(streq(a, x));
+
+ assert_se(y = bus_label_unescape(b));
+ assert_se(streq(a, y));
+}
+
+static void test_bus_label_escape(void) {
+ test_bus_label_escape_one("foo123bar", "foo123bar");
+ test_bus_label_escape_one("foo.bar", "foo_2ebar");
+ test_bus_label_escape_one("foo_2ebar", "foo_5f2ebar");
+ test_bus_label_escape_one("", "_");
+ test_bus_label_escape_one("_", "_5f");
+ test_bus_label_escape_one("1", "_31");
+ test_bus_label_escape_one(":1", "_3a1");
+}
+
+int main(int argc, char *argv[]) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *copy = NULL;
+ int r, boolean;
+ const char *x, *x2, *y, *z, *a, *b, *c, *d, *a_signature;
+ uint8_t u, v;
+ void *buffer = NULL;
+ size_t sz;
+ char *h;
+ const int32_t integer_array[] = { -1, -2, 0, 1, 2 }, *return_array;
+ char *s;
+ _cleanup_free_ char *first = NULL, *second = NULL, *third = NULL;
+ _cleanup_fclose_ FILE *ms = NULL;
+ size_t first_size = 0, second_size = 0, third_size = 0;
+ _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL;
+ double dbl;
+ uint64_t u64;
+
+ r = sd_bus_default_system(&bus);
+ if (r < 0)
+ return EXIT_TEST_SKIP;
+
+ r = sd_bus_message_new_method_call(bus, &m, "foobar.waldo", "/", "foobar.waldo", "Piep");
+ assert_se(r >= 0);
+
+ r = sd_bus_message_append(m, "");
+ assert_se(r >= 0);
+
+ r = sd_bus_message_append(m, "s", "a string");
+ assert_se(r >= 0);
+
+ r = sd_bus_message_append(m, "s", NULL);
+ assert_se(r >= 0);
+
+ r = sd_bus_message_append(m, "asg", 2, "string #1", "string #2", "sba(tt)ss");
+ assert_se(r >= 0);
+
+ r = sd_bus_message_append(m, "sass", "foobar", 5, "foo", "bar", "waldo", "piep", "pap", "after");
+ assert_se(r >= 0);
+
+ r = sd_bus_message_append(m, "a{yv}", 2, 3, "s", "foo", 5, "s", "waldo");
+ assert_se(r >= 0);
+
+ r = sd_bus_message_append(m, "y(ty)y(yt)y", 8, 777ULL, 7, 9, 77, 7777ULL, 10);
+ assert_se(r >= 0);
+
+ r = sd_bus_message_append(m, "()");
+ assert_se(r >= 0);
+
+ r = sd_bus_message_append(m, "ba(ss)", 255, 3, "aaa", "1", "bbb", "2", "ccc", "3");
+ assert_se(r >= 0);
+
+ r = sd_bus_message_open_container(m, 'a', "s");
+ assert_se(r >= 0);
+
+ r = sd_bus_message_append_basic(m, 's', "foobar");
+ assert_se(r >= 0);
+
+ r = sd_bus_message_append_basic(m, 's', "waldo");
+ assert_se(r >= 0);
+
+ r = sd_bus_message_close_container(m);
+ assert_se(r >= 0);
+
+ r = sd_bus_message_append_string_space(m, 5, &s);
+ assert_se(r >= 0);
+ strcpy(s, "hallo");
+
+ r = sd_bus_message_append_array(m, 'i', integer_array, sizeof(integer_array));
+ assert_se(r >= 0);
+
+ r = sd_bus_message_append_array(m, 'u', NULL, 0);
+ assert_se(r >= 0);
+
+ r = sd_bus_message_append(m, "a(stdo)", 1, "foo", 815ULL, 47.0, "/");
+ assert_se(r >= 0);
+
+ r = bus_message_seal(m, 4711, 0);
+ assert_se(r >= 0);
+
+ bus_message_dump(m, stdout, BUS_MESSAGE_DUMP_WITH_HEADER);
+
+ ms = open_memstream(&first, &first_size);
+ bus_message_dump(m, ms, 0);
+ fflush(ms);
+ assert_se(!ferror(ms));
+
+ r = bus_message_get_blob(m, &buffer, &sz);
+ assert_se(r >= 0);
+
+ h = hexmem(buffer, sz);
+ assert_se(h);
+
+ log_info("message size = %zu, contents =\n%s", sz, h);
+ free(h);
+
+#ifdef HAVE_GLIB
+ {
+ GDBusMessage *g;
+ char *p;
+
+#if !defined(GLIB_VERSION_2_36)
+ g_type_init();
+#endif
+
+ g = g_dbus_message_new_from_blob(buffer, sz, 0, NULL);
+ p = g_dbus_message_print(g, 0);
+ log_info("%s", p);
+ g_free(p);
+ g_object_unref(g);
+ }
+#endif
+
+#ifdef HAVE_DBUS
+ {
+ DBusMessage *w;
+ DBusError error;
+
+ dbus_error_init(&error);
+
+ w = dbus_message_demarshal(buffer, sz, &error);
+ if (!w)
+ log_error("%s", error.message);
+ else
+ dbus_message_unref(w);
+
+ dbus_error_free(&error);
+ }
+#endif
+
+ m = sd_bus_message_unref(m);
+
+ r = bus_message_from_malloc(bus, buffer, sz, NULL, 0, NULL, &m);
+ assert_se(r >= 0);
+
+ bus_message_dump(m, stdout, BUS_MESSAGE_DUMP_WITH_HEADER);
+
+ fclose(ms);
+ ms = open_memstream(&second, &second_size);
+ bus_message_dump(m, ms, 0);
+ fflush(ms);
+ assert_se(!ferror(ms));
+ assert_se(first_size == second_size);
+ assert_se(memcmp(first, second, first_size) == 0);
+
+ assert_se(sd_bus_message_rewind(m, true) >= 0);
+
+ r = sd_bus_message_read(m, "ssasg", &x, &x2, 2, &y, &z, &a_signature);
+ assert_se(r > 0);
+ assert_se(streq(x, "a string"));
+ assert_se(streq(x2, ""));
+ assert_se(streq(y, "string #1"));
+ assert_se(streq(z, "string #2"));
+ assert_se(streq(a_signature, "sba(tt)ss"));
+
+ r = sd_bus_message_read(m, "sass", &x, 5, &y, &z, &a, &b, &c, &d);
+ assert_se(r > 0);
+ assert_se(streq(x, "foobar"));
+ assert_se(streq(y, "foo"));
+ assert_se(streq(z, "bar"));
+ assert_se(streq(a, "waldo"));
+ assert_se(streq(b, "piep"));
+ assert_se(streq(c, "pap"));
+ assert_se(streq(d, "after"));
+
+ r = sd_bus_message_read(m, "a{yv}", 2, &u, "s", &x, &v, "s", &y);
+ assert_se(r > 0);
+ assert_se(u == 3);
+ assert_se(streq(x, "foo"));
+ assert_se(v == 5);
+ assert_se(streq(y, "waldo"));
+
+ r = sd_bus_message_read(m, "y(ty)", &v, &u64, &u);
+ assert_se(r > 0);
+ assert_se(v == 8);
+ assert_se(u64 == 777);
+ assert_se(u == 7);
+
+ r = sd_bus_message_read(m, "y(yt)", &v, &u, &u64);
+ assert_se(r > 0);
+ assert_se(v == 9);
+ assert_se(u == 77);
+ assert_se(u64 == 7777);
+
+ r = sd_bus_message_read(m, "y", &v);
+ assert_se(r > 0);
+ assert_se(v == 10);
+
+ r = sd_bus_message_read(m, "()");
+ assert_se(r > 0);
+
+ r = sd_bus_message_read(m, "ba(ss)", &boolean, 3, &x, &y, &a, &b, &c, &d);
+ assert_se(r > 0);
+ assert_se(boolean);
+ assert_se(streq(x, "aaa"));
+ assert_se(streq(y, "1"));
+ assert_se(streq(a, "bbb"));
+ assert_se(streq(b, "2"));
+ assert_se(streq(c, "ccc"));
+ assert_se(streq(d, "3"));
+
+ assert_se(sd_bus_message_verify_type(m, 'a', "s") > 0);
+
+ r = sd_bus_message_read(m, "as", 2, &x, &y);
+ assert_se(r > 0);
+ assert_se(streq(x, "foobar"));
+ assert_se(streq(y, "waldo"));
+
+ r = sd_bus_message_read_basic(m, 's', &s);
+ assert_se(r > 0);
+ assert_se(streq(s, "hallo"));
+
+ r = sd_bus_message_read_array(m, 'i', (const void**) &return_array, &sz);
+ assert_se(r > 0);
+ assert_se(sz == sizeof(integer_array));
+ assert_se(memcmp(integer_array, return_array, sz) == 0);
+
+ r = sd_bus_message_read_array(m, 'u', (const void**) &return_array, &sz);
+ assert_se(r > 0);
+ assert_se(sz == 0);
+
+ r = sd_bus_message_read(m, "a(stdo)", 1, &x, &u64, &dbl, &y);
+ assert_se(r > 0);
+ assert_se(streq(x, "foo"));
+ assert_se(u64 == 815ULL);
+ assert_se(fabs(dbl - 47.0) < 0.1);
+ assert_se(streq(y, "/"));
+
+ r = sd_bus_message_peek_type(m, NULL, NULL);
+ assert_se(r == 0);
+
+ r = sd_bus_message_new_method_call(bus, &copy, "foobar.waldo", "/", "foobar.waldo", "Piep");
+ assert_se(r >= 0);
+
+ r = sd_bus_message_rewind(m, true);
+ assert_se(r >= 0);
+
+ r = sd_bus_message_copy(copy, m, true);
+ assert_se(r >= 0);
+
+ r = bus_message_seal(copy, 4712, 0);
+ assert_se(r >= 0);
+
+ fclose(ms);
+ ms = open_memstream(&third, &third_size);
+ bus_message_dump(copy, ms, 0);
+ fflush(ms);
+ assert_se(!ferror(ms));
+
+ printf("<%.*s>\n", (int) first_size, first);
+ printf("<%.*s>\n", (int) third_size, third);
+
+ assert_se(first_size == third_size);
+ assert_se(memcmp(first, third, third_size) == 0);
+
+ r = sd_bus_message_rewind(m, true);
+ assert_se(r >= 0);
+
+ assert_se(sd_bus_message_verify_type(m, 's', NULL) > 0);
+
+ r = sd_bus_message_skip(m, "ssasg");
+ assert_se(r > 0);
+
+ assert_se(sd_bus_message_verify_type(m, 's', NULL) > 0);
+
+ r = sd_bus_message_skip(m, "sass");
+ assert_se(r >= 0);
+
+ assert_se(sd_bus_message_verify_type(m, 'a', "{yv}") > 0);
+
+ r = sd_bus_message_skip(m, "a{yv}y(ty)y(yt)y()");
+ assert_se(r >= 0);
+
+ assert_se(sd_bus_message_verify_type(m, 'b', NULL) > 0);
+
+ r = sd_bus_message_read(m, "b", &boolean);
+ assert_se(r > 0);
+ assert_se(boolean);
+
+ r = sd_bus_message_enter_container(m, 0, NULL);
+ assert_se(r > 0);
+
+ r = sd_bus_message_read(m, "(ss)", &x, &y);
+ assert_se(r > 0);
+
+ r = sd_bus_message_read(m, "(ss)", &a, &b);
+ assert_se(r > 0);
+
+ r = sd_bus_message_read(m, "(ss)", &c, &d);
+ assert_se(r > 0);
+
+ r = sd_bus_message_read(m, "(ss)", &x, &y);
+ assert_se(r == 0);
+
+ r = sd_bus_message_exit_container(m);
+ assert_se(r >= 0);
+
+ assert_se(streq(x, "aaa"));
+ assert_se(streq(y, "1"));
+ assert_se(streq(a, "bbb"));
+ assert_se(streq(b, "2"));
+ assert_se(streq(c, "ccc"));
+ assert_se(streq(d, "3"));
+
+ test_bus_label_escape();
+ test_bus_path_encode();
+ test_bus_path_encode_unique();
+ test_bus_path_encode_many();
+
+ return 0;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/test-bus-match.c b/src/libsystemd/libsystemd-internal/sd-bus/test-bus-match.c
new file mode 100644
index 0000000000..29c4529f95
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/test-bus-match.c
@@ -0,0 +1,159 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "bus-match.h"
+#include "bus-message.h"
+#include "bus-slot.h"
+#include "bus-util.h"
+#include "log.h"
+#include "macro.h"
+
+static bool mask[32];
+
+static int filter(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) {
+ log_info("Ran %u", PTR_TO_UINT(userdata));
+ assert_se(PTR_TO_UINT(userdata) < ELEMENTSOF(mask));
+ mask[PTR_TO_UINT(userdata)] = true;
+ return 0;
+}
+
+static bool mask_contains(unsigned a[], unsigned n) {
+ unsigned i, j;
+
+ for (i = 0; i < ELEMENTSOF(mask); i++) {
+ bool found = false;
+
+ for (j = 0; j < n; j++)
+ if (a[j] == i) {
+ found = true;
+ break;
+ }
+
+ if (found != mask[i])
+ return false;
+ }
+
+ return true;
+}
+
+static int match_add(sd_bus_slot *slots, struct bus_match_node *root, const char *match, int value) {
+ struct bus_match_component *components = NULL;
+ unsigned n_components = 0;
+ sd_bus_slot *s;
+ int r;
+
+ s = slots + value;
+ zero(*s);
+
+ r = bus_match_parse(match, &components, &n_components);
+ if (r < 0)
+ return r;
+
+ s->userdata = INT_TO_PTR(value);
+ s->match_callback.callback = filter;
+
+ r = bus_match_add(root, components, n_components, &s->match_callback);
+ bus_match_parse_free(components, n_components);
+
+ return r;
+}
+
+static void test_match_scope(const char *match, enum bus_match_scope scope) {
+ struct bus_match_component *components = NULL;
+ unsigned n_components = 0;
+
+ assert_se(bus_match_parse(match, &components, &n_components) >= 0);
+ assert_se(bus_match_get_scope(components, n_components) == scope);
+ bus_match_parse_free(components, n_components);
+}
+
+int main(int argc, char *argv[]) {
+ struct bus_match_node root = {
+ .type = BUS_MATCH_ROOT,
+ };
+
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+ _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
+ enum bus_match_node_type i;
+ sd_bus_slot slots[19];
+ int r;
+
+ r = sd_bus_open_system(&bus);
+ if (r < 0)
+ return EXIT_TEST_SKIP;
+
+ assert_se(match_add(slots, &root, "arg2='wal\\'do',sender='foo',type='signal',interface='bar.x',", 1) >= 0);
+ assert_se(match_add(slots, &root, "arg2='wal\\'do2',sender='foo',type='signal',interface='bar.x',", 2) >= 0);
+ assert_se(match_add(slots, &root, "arg3='test',sender='foo',type='signal',interface='bar.x',", 3) >= 0);
+ assert_se(match_add(slots, &root, "arg3='test',sender='foo',type='method_call',interface='bar.x',", 4) >= 0);
+ assert_se(match_add(slots, &root, "", 5) >= 0);
+ assert_se(match_add(slots, &root, "interface='quux.x'", 6) >= 0);
+ assert_se(match_add(slots, &root, "interface='bar.x'", 7) >= 0);
+ assert_se(match_add(slots, &root, "member='waldo',path='/foo/bar'", 8) >= 0);
+ assert_se(match_add(slots, &root, "path='/foo/bar'", 9) >= 0);
+ assert_se(match_add(slots, &root, "path_namespace='/foo'", 10) >= 0);
+ assert_se(match_add(slots, &root, "path_namespace='/foo/quux'", 11) >= 0);
+ assert_se(match_add(slots, &root, "arg1='two'", 12) >= 0);
+ assert_se(match_add(slots, &root, "member='waldo',arg2path='/prefix/'", 13) >= 0);
+ assert_se(match_add(slots, &root, "member=waldo,path='/foo/bar',arg3namespace='prefix'", 14) >= 0);
+ assert_se(match_add(slots, &root, "arg4has='pi'", 15) >= 0);
+ assert_se(match_add(slots, &root, "arg4has='pa'", 16) >= 0);
+ assert_se(match_add(slots, &root, "arg4has='po'", 17) >= 0);
+ assert_se(match_add(slots, &root, "arg4='pi'", 18) >= 0);
+
+ bus_match_dump(&root, 0);
+
+ assert_se(sd_bus_message_new_signal(bus, &m, "/foo/bar", "bar.x", "waldo") >= 0);
+ assert_se(sd_bus_message_append(m, "ssssas", "one", "two", "/prefix/three", "prefix.four", 3, "pi", "pa", "po") >= 0);
+ assert_se(bus_message_seal(m, 1, 0) >= 0);
+
+ zero(mask);
+ assert_se(bus_match_run(NULL, &root, m) == 0);
+ assert_se(mask_contains((unsigned[]) { 9, 8, 7, 5, 10, 12, 13, 14, 15, 16, 17 }, 11));
+
+ assert_se(bus_match_remove(&root, &slots[8].match_callback) >= 0);
+ assert_se(bus_match_remove(&root, &slots[13].match_callback) >= 0);
+
+ bus_match_dump(&root, 0);
+
+ zero(mask);
+ assert_se(bus_match_run(NULL, &root, m) == 0);
+ assert_se(mask_contains((unsigned[]) { 9, 5, 10, 12, 14, 7, 15, 16, 17 }, 9));
+
+ for (i = 0; i < _BUS_MATCH_NODE_TYPE_MAX; i++) {
+ char buf[32];
+ const char *x;
+
+ assert_se(x = bus_match_node_type_to_string(i, buf, sizeof(buf)));
+
+ if (i >= BUS_MATCH_MESSAGE_TYPE)
+ assert_se(bus_match_node_type_from_string(x, strlen(x)) == i);
+ }
+
+ bus_match_free(&root);
+
+ test_match_scope("interface='foobar'", BUS_MATCH_GENERIC);
+ test_match_scope("", BUS_MATCH_GENERIC);
+ test_match_scope("interface='org.freedesktop.DBus.Local'", BUS_MATCH_LOCAL);
+ test_match_scope("sender='org.freedesktop.DBus.Local'", BUS_MATCH_LOCAL);
+ test_match_scope("member='gurke',path='/org/freedesktop/DBus/Local'", BUS_MATCH_LOCAL);
+ test_match_scope("arg2='piep',sender='org.freedesktop.DBus',member='waldo'", BUS_MATCH_DRIVER);
+
+ return 0;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/test-bus-objects.c b/src/libsystemd/libsystemd-internal/sd-bus/test-bus-objects.c
new file mode 100644
index 0000000000..e9bb655665
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/test-bus-objects.c
@@ -0,0 +1,555 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <pthread.h>
+#include <stdlib.h>
+
+#include <systemd/sd-bus.h>
+
+#include "alloc-util.h"
+#include "bus-dump.h"
+#include "bus-internal.h"
+#include "bus-message.h"
+#include "bus-util.h"
+#include "log.h"
+#include "macro.h"
+#include "strv.h"
+#include "util.h"
+
+struct context {
+ int fds[2];
+ bool quit;
+ char *something;
+ char *automatic_string_property;
+ uint32_t automatic_integer_property;
+};
+
+static int something_handler(sd_bus_message *m, void *userdata, sd_bus_error *error) {
+ struct context *c = userdata;
+ const char *s;
+ char *n = NULL;
+ int r;
+
+ r = sd_bus_message_read(m, "s", &s);
+ assert_se(r > 0);
+
+ n = strjoin("<<<", s, ">>>", NULL);
+ assert_se(n);
+
+ free(c->something);
+ c->something = n;
+
+ log_info("AlterSomething() called, got %s, returning %s", s, n);
+
+ /* This should fail, since the return type doesn't match */
+ assert_se(sd_bus_reply_method_return(m, "u", 4711) == -ENOMSG);
+
+ r = sd_bus_reply_method_return(m, "s", n);
+ assert_se(r >= 0);
+
+ return 1;
+}
+
+static int exit_handler(sd_bus_message *m, void *userdata, sd_bus_error *error) {
+ struct context *c = userdata;
+ int r;
+
+ c->quit = true;
+
+ log_info("Exit called");
+
+ r = sd_bus_reply_method_return(m, "");
+ assert_se(r >= 0);
+
+ return 1;
+}
+
+static int get_handler(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) {
+ struct context *c = userdata;
+ int r;
+
+ log_info("property get for %s called, returning \"%s\".", property, c->something);
+
+ r = sd_bus_message_append(reply, "s", c->something);
+ assert_se(r >= 0);
+
+ return 1;
+}
+
+static int set_handler(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *value, void *userdata, sd_bus_error *error) {
+ struct context *c = userdata;
+ const char *s;
+ char *n;
+ int r;
+
+ log_info("property set for %s called", property);
+
+ r = sd_bus_message_read(value, "s", &s);
+ assert_se(r >= 0);
+
+ n = strdup(s);
+ assert_se(n);
+
+ free(c->something);
+ c->something = n;
+
+ return 1;
+}
+
+static int value_handler(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) {
+ _cleanup_free_ char *s = NULL;
+ const char *x;
+ int r;
+
+ assert_se(asprintf(&s, "object %p, path %s", userdata, path) >= 0);
+ r = sd_bus_message_append(reply, "s", s);
+ assert_se(r >= 0);
+
+ assert_se(x = startswith(path, "/value/"));
+
+ assert_se(PTR_TO_UINT(userdata) == 30);
+
+ return 1;
+}
+
+static int notify_test(sd_bus_message *m, void *userdata, sd_bus_error *error) {
+ int r;
+
+ assert_se(sd_bus_emit_properties_changed(sd_bus_message_get_bus(m), m->path, "org.freedesktop.systemd.ValueTest", "Value", NULL) >= 0);
+
+ r = sd_bus_reply_method_return(m, NULL);
+ assert_se(r >= 0);
+
+ return 1;
+}
+
+static int notify_test2(sd_bus_message *m, void *userdata, sd_bus_error *error) {
+ int r;
+
+ assert_se(sd_bus_emit_properties_changed_strv(sd_bus_message_get_bus(m), m->path, "org.freedesktop.systemd.ValueTest", NULL) >= 0);
+
+ r = sd_bus_reply_method_return(m, NULL);
+ assert_se(r >= 0);
+
+ return 1;
+}
+
+static int emit_interfaces_added(sd_bus_message *m, void *userdata, sd_bus_error *error) {
+ int r;
+
+ assert_se(sd_bus_emit_interfaces_added(sd_bus_message_get_bus(m), "/value/a/x", "org.freedesktop.systemd.ValueTest", NULL) >= 0);
+
+ r = sd_bus_reply_method_return(m, NULL);
+ assert_se(r >= 0);
+
+ return 1;
+}
+
+static int emit_interfaces_removed(sd_bus_message *m, void *userdata, sd_bus_error *error) {
+ int r;
+
+ assert_se(sd_bus_emit_interfaces_removed(sd_bus_message_get_bus(m), "/value/a/x", "org.freedesktop.systemd.ValueTest", NULL) >= 0);
+
+ r = sd_bus_reply_method_return(m, NULL);
+ assert_se(r >= 0);
+
+ return 1;
+}
+
+static int emit_object_added(sd_bus_message *m, void *userdata, sd_bus_error *error) {
+ int r;
+
+ assert_se(sd_bus_emit_object_added(sd_bus_message_get_bus(m), "/value/a/x") >= 0);
+
+ r = sd_bus_reply_method_return(m, NULL);
+ assert_se(r >= 0);
+
+ return 1;
+}
+
+static int emit_object_removed(sd_bus_message *m, void *userdata, sd_bus_error *error) {
+ int r;
+
+ assert_se(sd_bus_emit_object_removed(sd_bus_message_get_bus(m), "/value/a/x") >= 0);
+
+ r = sd_bus_reply_method_return(m, NULL);
+ assert_se(r >= 0);
+
+ return 1;
+}
+
+static const sd_bus_vtable vtable[] = {
+ SD_BUS_VTABLE_START(0),
+ SD_BUS_METHOD("AlterSomething", "s", "s", something_handler, 0),
+ SD_BUS_METHOD("Exit", "", "", exit_handler, 0),
+ SD_BUS_WRITABLE_PROPERTY("Something", "s", get_handler, set_handler, 0, 0),
+ SD_BUS_WRITABLE_PROPERTY("AutomaticStringProperty", "s", NULL, NULL, offsetof(struct context, automatic_string_property), 0),
+ SD_BUS_WRITABLE_PROPERTY("AutomaticIntegerProperty", "u", NULL, NULL, offsetof(struct context, automatic_integer_property), 0),
+ SD_BUS_METHOD("NoOperation", NULL, NULL, NULL, 0),
+ SD_BUS_METHOD("EmitInterfacesAdded", NULL, NULL, emit_interfaces_added, 0),
+ SD_BUS_METHOD("EmitInterfacesRemoved", NULL, NULL, emit_interfaces_removed, 0),
+ SD_BUS_METHOD("EmitObjectAdded", NULL, NULL, emit_object_added, 0),
+ SD_BUS_METHOD("EmitObjectRemoved", NULL, NULL, emit_object_removed, 0),
+ SD_BUS_VTABLE_END
+};
+
+static const sd_bus_vtable vtable2[] = {
+ SD_BUS_VTABLE_START(0),
+ SD_BUS_METHOD("NotifyTest", "", "", notify_test, 0),
+ SD_BUS_METHOD("NotifyTest2", "", "", notify_test2, 0),
+ SD_BUS_PROPERTY("Value", "s", value_handler, 10, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+ SD_BUS_PROPERTY("Value2", "s", value_handler, 10, SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
+ SD_BUS_PROPERTY("Value3", "s", value_handler, 10, SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("Value4", "s", value_handler, 10, 0),
+ SD_BUS_PROPERTY("AnExplicitProperty", "s", NULL, offsetof(struct context, something), SD_BUS_VTABLE_PROPERTY_EXPLICIT|SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
+ SD_BUS_VTABLE_END
+};
+
+static int enumerator_callback(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) {
+
+ if (object_path_startswith("/value", path))
+ assert_se(*nodes = strv_new("/value/a", "/value/b", "/value/c", NULL));
+
+ return 1;
+}
+
+static int enumerator2_callback(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) {
+
+ if (object_path_startswith("/value/a", path))
+ assert_se(*nodes = strv_new("/value/a/x", "/value/a/y", "/value/a/z", NULL));
+
+ return 1;
+}
+
+static void *server(void *p) {
+ struct context *c = p;
+ sd_bus *bus = NULL;
+ sd_id128_t id;
+ int r;
+
+ c->quit = false;
+
+ assert_se(sd_id128_randomize(&id) >= 0);
+
+ assert_se(sd_bus_new(&bus) >= 0);
+ assert_se(sd_bus_set_fd(bus, c->fds[0], c->fds[0]) >= 0);
+ assert_se(sd_bus_set_server(bus, 1, id) >= 0);
+
+ assert_se(sd_bus_add_object_vtable(bus, NULL, "/foo", "org.freedesktop.systemd.test", vtable, c) >= 0);
+ assert_se(sd_bus_add_object_vtable(bus, NULL, "/foo", "org.freedesktop.systemd.test2", vtable, c) >= 0);
+ assert_se(sd_bus_add_fallback_vtable(bus, NULL, "/value", "org.freedesktop.systemd.ValueTest", vtable2, NULL, UINT_TO_PTR(20)) >= 0);
+ assert_se(sd_bus_add_node_enumerator(bus, NULL, "/value", enumerator_callback, NULL) >= 0);
+ assert_se(sd_bus_add_node_enumerator(bus, NULL, "/value/a", enumerator2_callback, NULL) >= 0);
+ assert_se(sd_bus_add_object_manager(bus, NULL, "/value") >= 0);
+ assert_se(sd_bus_add_object_manager(bus, NULL, "/value/a") >= 0);
+
+ assert_se(sd_bus_start(bus) >= 0);
+
+ log_error("Entering event loop on server");
+
+ while (!c->quit) {
+ log_error("Loop!");
+
+ r = sd_bus_process(bus, NULL);
+ if (r < 0) {
+ log_error_errno(r, "Failed to process requests: %m");
+ goto fail;
+ }
+
+ if (r == 0) {
+ r = sd_bus_wait(bus, (uint64_t) -1);
+ if (r < 0) {
+ log_error_errno(r, "Failed to wait: %m");
+ goto fail;
+ }
+
+ continue;
+ }
+ }
+
+ r = 0;
+
+fail:
+ if (bus) {
+ sd_bus_flush(bus);
+ sd_bus_unref(bus);
+ }
+
+ return INT_TO_PTR(r);
+}
+
+static int client(struct context *c) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL;
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ const char *s;
+ int r;
+
+ assert_se(sd_bus_new(&bus) >= 0);
+ assert_se(sd_bus_set_fd(bus, c->fds[1], c->fds[1]) >= 0);
+ assert_se(sd_bus_start(bus) >= 0);
+
+ r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "NoOperation", &error, NULL, NULL);
+ assert_se(r >= 0);
+
+ r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "AlterSomething", &error, &reply, "s", "hallo");
+ assert_se(r >= 0);
+
+ r = sd_bus_message_read(reply, "s", &s);
+ assert_se(r >= 0);
+ assert_se(streq(s, "<<<hallo>>>"));
+
+ sd_bus_message_unref(reply);
+ reply = NULL;
+
+ r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "Doesntexist", &error, &reply, "");
+ assert_se(r < 0);
+ assert_se(sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_METHOD));
+
+ sd_bus_error_free(&error);
+
+ r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "AlterSomething", &error, &reply, "as", 1, "hallo");
+ assert_se(r < 0);
+ assert_se(sd_bus_error_has_name(&error, SD_BUS_ERROR_INVALID_ARGS));
+
+ sd_bus_error_free(&error);
+
+ r = sd_bus_get_property(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "Something", &error, &reply, "s");
+ assert_se(r >= 0);
+
+ r = sd_bus_message_read(reply, "s", &s);
+ assert_se(r >= 0);
+ assert_se(streq(s, "<<<hallo>>>"));
+
+ sd_bus_message_unref(reply);
+ reply = NULL;
+
+ r = sd_bus_set_property(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "Something", &error, "s", "test");
+ assert_se(r >= 0);
+
+ r = sd_bus_get_property(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "Something", &error, &reply, "s");
+ assert_se(r >= 0);
+
+ r = sd_bus_message_read(reply, "s", &s);
+ assert_se(r >= 0);
+ assert_se(streq(s, "test"));
+
+ sd_bus_message_unref(reply);
+ reply = NULL;
+
+ r = sd_bus_set_property(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "AutomaticIntegerProperty", &error, "u", 815);
+ assert_se(r >= 0);
+
+ assert_se(c->automatic_integer_property == 815);
+
+ r = sd_bus_set_property(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "AutomaticStringProperty", &error, "s", "Du Dödel, Du!");
+ assert_se(r >= 0);
+
+ assert_se(streq(c->automatic_string_property, "Du Dödel, Du!"));
+
+ r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.DBus.Introspectable", "Introspect", &error, &reply, "");
+ assert_se(r >= 0);
+
+ r = sd_bus_message_read(reply, "s", &s);
+ assert_se(r >= 0);
+ fputs(s, stdout);
+
+ sd_bus_message_unref(reply);
+ reply = NULL;
+
+ r = sd_bus_get_property(bus, "org.freedesktop.systemd.test", "/value/xuzz", "org.freedesktop.systemd.ValueTest", "Value", &error, &reply, "s");
+ assert_se(r >= 0);
+
+ r = sd_bus_message_read(reply, "s", &s);
+ assert_se(r >= 0);
+ log_info("read %s", s);
+
+ sd_bus_message_unref(reply);
+ reply = NULL;
+
+ r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/", "org.freedesktop.DBus.Introspectable", "Introspect", &error, &reply, "");
+ assert_se(r >= 0);
+
+ r = sd_bus_message_read(reply, "s", &s);
+ assert_se(r >= 0);
+ fputs(s, stdout);
+
+ sd_bus_message_unref(reply);
+ reply = NULL;
+
+ r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/value", "org.freedesktop.DBus.Introspectable", "Introspect", &error, &reply, "");
+ assert_se(r >= 0);
+
+ r = sd_bus_message_read(reply, "s", &s);
+ assert_se(r >= 0);
+ fputs(s, stdout);
+
+ sd_bus_message_unref(reply);
+ reply = NULL;
+
+ r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/value/a", "org.freedesktop.DBus.Introspectable", "Introspect", &error, &reply, "");
+ assert_se(r >= 0);
+
+ r = sd_bus_message_read(reply, "s", &s);
+ assert_se(r >= 0);
+ fputs(s, stdout);
+
+ sd_bus_message_unref(reply);
+ reply = NULL;
+
+ r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.DBus.Properties", "GetAll", &error, &reply, "s", "");
+ assert_se(r >= 0);
+
+ bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_WITH_HEADER);
+
+ sd_bus_message_unref(reply);
+ reply = NULL;
+
+ r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/value/a", "org.freedesktop.DBus.Properties", "GetAll", &error, &reply, "s", "org.freedesktop.systemd.ValueTest2");
+ assert_se(r < 0);
+ assert_se(sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_INTERFACE));
+ sd_bus_error_free(&error);
+
+ r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.DBus.ObjectManager", "GetManagedObjects", &error, &reply, "");
+ assert_se(r < 0);
+ assert_se(sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_METHOD));
+ sd_bus_error_free(&error);
+
+ r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/value", "org.freedesktop.DBus.ObjectManager", "GetManagedObjects", &error, &reply, "");
+ assert_se(r >= 0);
+
+ bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_WITH_HEADER);
+
+ sd_bus_message_unref(reply);
+ reply = NULL;
+
+ r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/value/a", "org.freedesktop.systemd.ValueTest", "NotifyTest", &error, NULL, "");
+ assert_se(r >= 0);
+
+ r = sd_bus_process(bus, &reply);
+ assert_se(r > 0);
+
+ assert_se(sd_bus_message_is_signal(reply, "org.freedesktop.DBus.Properties", "PropertiesChanged"));
+ bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_WITH_HEADER);
+
+ sd_bus_message_unref(reply);
+ reply = NULL;
+
+ r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/value/a", "org.freedesktop.systemd.ValueTest", "NotifyTest2", &error, NULL, "");
+ assert_se(r >= 0);
+
+ r = sd_bus_process(bus, &reply);
+ assert_se(r > 0);
+
+ assert_se(sd_bus_message_is_signal(reply, "org.freedesktop.DBus.Properties", "PropertiesChanged"));
+ bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_WITH_HEADER);
+
+ sd_bus_message_unref(reply);
+ reply = NULL;
+
+ r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "EmitInterfacesAdded", &error, NULL, "");
+ assert_se(r >= 0);
+
+ r = sd_bus_process(bus, &reply);
+ assert_se(r > 0);
+
+ assert_se(sd_bus_message_is_signal(reply, "org.freedesktop.DBus.ObjectManager", "InterfacesAdded"));
+ bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_WITH_HEADER);
+
+ sd_bus_message_unref(reply);
+ reply = NULL;
+
+ r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "EmitInterfacesRemoved", &error, NULL, "");
+ assert_se(r >= 0);
+
+ r = sd_bus_process(bus, &reply);
+ assert_se(r > 0);
+
+ assert_se(sd_bus_message_is_signal(reply, "org.freedesktop.DBus.ObjectManager", "InterfacesRemoved"));
+ bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_WITH_HEADER);
+
+ sd_bus_message_unref(reply);
+ reply = NULL;
+
+ r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "EmitObjectAdded", &error, NULL, "");
+ assert_se(r >= 0);
+
+ r = sd_bus_process(bus, &reply);
+ assert_se(r > 0);
+
+ assert_se(sd_bus_message_is_signal(reply, "org.freedesktop.DBus.ObjectManager", "InterfacesAdded"));
+ bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_WITH_HEADER);
+
+ sd_bus_message_unref(reply);
+ reply = NULL;
+
+ r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "EmitObjectRemoved", &error, NULL, "");
+ assert_se(r >= 0);
+
+ r = sd_bus_process(bus, &reply);
+ assert_se(r > 0);
+
+ assert_se(sd_bus_message_is_signal(reply, "org.freedesktop.DBus.ObjectManager", "InterfacesRemoved"));
+ bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_WITH_HEADER);
+
+ sd_bus_message_unref(reply);
+ reply = NULL;
+
+ r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "Exit", &error, NULL, "");
+ assert_se(r >= 0);
+
+ sd_bus_flush(bus);
+
+ return 0;
+}
+
+int main(int argc, char *argv[]) {
+ struct context c = {};
+ pthread_t s;
+ void *p;
+ int r, q;
+
+ zero(c);
+
+ c.automatic_integer_property = 4711;
+ assert_se(c.automatic_string_property = strdup("dudeldu"));
+
+ assert_se(socketpair(AF_UNIX, SOCK_STREAM, 0, c.fds) >= 0);
+
+ r = pthread_create(&s, NULL, server, &c);
+ if (r != 0)
+ return -r;
+
+ r = client(&c);
+
+ q = pthread_join(s, &p);
+ if (q != 0)
+ return -q;
+
+ if (r < 0)
+ return r;
+
+ if (PTR_TO_INT(p) < 0)
+ return PTR_TO_INT(p);
+
+ free(c.something);
+ free(c.automatic_string_property);
+
+ return EXIT_SUCCESS;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/test-bus-server.c b/src/libsystemd/libsystemd-internal/sd-bus/test-bus-server.c
new file mode 100644
index 0000000000..190410674b
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/test-bus-server.c
@@ -0,0 +1,216 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <pthread.h>
+#include <stdlib.h>
+
+#include <systemd/sd-bus.h>
+
+#include "bus-internal.h"
+#include "bus-util.h"
+#include "log.h"
+#include "macro.h"
+#include "util.h"
+
+struct context {
+ int fds[2];
+
+ bool client_negotiate_unix_fds;
+ bool server_negotiate_unix_fds;
+
+ bool client_anonymous_auth;
+ bool server_anonymous_auth;
+};
+
+static void *server(void *p) {
+ struct context *c = p;
+ sd_bus *bus = NULL;
+ sd_id128_t id;
+ bool quit = false;
+ int r;
+
+ assert_se(sd_id128_randomize(&id) >= 0);
+
+ assert_se(sd_bus_new(&bus) >= 0);
+ assert_se(sd_bus_set_fd(bus, c->fds[0], c->fds[0]) >= 0);
+ assert_se(sd_bus_set_server(bus, 1, id) >= 0);
+ assert_se(sd_bus_set_anonymous(bus, c->server_anonymous_auth) >= 0);
+ assert_se(sd_bus_negotiate_fds(bus, c->server_negotiate_unix_fds) >= 0);
+ assert_se(sd_bus_start(bus) >= 0);
+
+ while (!quit) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
+
+ r = sd_bus_process(bus, &m);
+ if (r < 0) {
+ log_error_errno(r, "Failed to process requests: %m");
+ goto fail;
+ }
+
+ if (r == 0) {
+ r = sd_bus_wait(bus, (uint64_t) -1);
+ if (r < 0) {
+ log_error_errno(r, "Failed to wait: %m");
+ goto fail;
+ }
+
+ continue;
+ }
+
+ if (!m)
+ continue;
+
+ log_info("Got message! member=%s", strna(sd_bus_message_get_member(m)));
+
+ if (sd_bus_message_is_method_call(m, "org.freedesktop.systemd.test", "Exit")) {
+
+ assert_se((sd_bus_can_send(bus, 'h') >= 1) == (c->server_negotiate_unix_fds && c->client_negotiate_unix_fds));
+
+ r = sd_bus_message_new_method_return(m, &reply);
+ if (r < 0) {
+ log_error_errno(r, "Failed to allocate return: %m");
+ goto fail;
+ }
+
+ quit = true;
+
+ } else if (sd_bus_message_is_method_call(m, NULL, NULL)) {
+ r = sd_bus_message_new_method_error(
+ m,
+ &reply,
+ &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_UNKNOWN_METHOD, "Unknown method."));
+ if (r < 0) {
+ log_error_errno(r, "Failed to allocate return: %m");
+ goto fail;
+ }
+ }
+
+ if (reply) {
+ r = sd_bus_send(bus, reply, NULL);
+ if (r < 0) {
+ log_error_errno(r, "Failed to send reply: %m");
+ goto fail;
+ }
+ }
+ }
+
+ r = 0;
+
+fail:
+ if (bus) {
+ sd_bus_flush(bus);
+ sd_bus_unref(bus);
+ }
+
+ return INT_TO_PTR(r);
+}
+
+static int client(struct context *c) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
+ _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL;
+ sd_bus_error error = SD_BUS_ERROR_NULL;
+ int r;
+
+ assert_se(sd_bus_new(&bus) >= 0);
+ assert_se(sd_bus_set_fd(bus, c->fds[1], c->fds[1]) >= 0);
+ assert_se(sd_bus_negotiate_fds(bus, c->client_negotiate_unix_fds) >= 0);
+ assert_se(sd_bus_set_anonymous(bus, c->client_anonymous_auth) >= 0);
+ assert_se(sd_bus_start(bus) >= 0);
+
+ r = sd_bus_message_new_method_call(
+ bus,
+ &m,
+ "org.freedesktop.systemd.test",
+ "/",
+ "org.freedesktop.systemd.test",
+ "Exit");
+ if (r < 0)
+ return log_error_errno(r, "Failed to allocate method call: %m");
+
+ r = sd_bus_call(bus, m, 0, &error, &reply);
+ if (r < 0) {
+ log_error("Failed to issue method call: %s", bus_error_message(&error, -r));
+ return r;
+ }
+
+ return 0;
+}
+
+static int test_one(bool client_negotiate_unix_fds, bool server_negotiate_unix_fds,
+ bool client_anonymous_auth, bool server_anonymous_auth) {
+
+ struct context c;
+ pthread_t s;
+ void *p;
+ int r, q;
+
+ zero(c);
+
+ assert_se(socketpair(AF_UNIX, SOCK_STREAM, 0, c.fds) >= 0);
+
+ c.client_negotiate_unix_fds = client_negotiate_unix_fds;
+ c.server_negotiate_unix_fds = server_negotiate_unix_fds;
+ c.client_anonymous_auth = client_anonymous_auth;
+ c.server_anonymous_auth = server_anonymous_auth;
+
+ r = pthread_create(&s, NULL, server, &c);
+ if (r != 0)
+ return -r;
+
+ r = client(&c);
+
+ q = pthread_join(s, &p);
+ if (q != 0)
+ return -q;
+
+ if (r < 0)
+ return r;
+
+ if (PTR_TO_INT(p) < 0)
+ return PTR_TO_INT(p);
+
+ return 0;
+}
+
+int main(int argc, char *argv[]) {
+ int r;
+
+ r = test_one(true, true, false, false);
+ assert_se(r >= 0);
+
+ r = test_one(true, false, false, false);
+ assert_se(r >= 0);
+
+ r = test_one(false, true, false, false);
+ assert_se(r >= 0);
+
+ r = test_one(false, false, false, false);
+ assert_se(r >= 0);
+
+ r = test_one(true, true, true, true);
+ assert_se(r >= 0);
+
+ r = test_one(true, true, false, true);
+ assert_se(r >= 0);
+
+ r = test_one(true, true, true, false);
+ assert_se(r == -EPERM);
+
+ return EXIT_SUCCESS;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/test-bus-signature.c b/src/libsystemd/libsystemd-internal/sd-bus/test-bus-signature.c
new file mode 100644
index 0000000000..4f4fd093bf
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/test-bus-signature.c
@@ -0,0 +1,164 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "bus-internal.h"
+#include "bus-signature.h"
+#include "log.h"
+#include "string-util.h"
+
+int main(int argc, char *argv[]) {
+ char prefix[256];
+ int r;
+
+ assert_se(signature_is_single("y", false));
+ assert_se(signature_is_single("u", false));
+ assert_se(signature_is_single("v", false));
+ assert_se(signature_is_single("as", false));
+ assert_se(signature_is_single("(ss)", false));
+ assert_se(signature_is_single("()", false));
+ assert_se(signature_is_single("(()()()()())", false));
+ assert_se(signature_is_single("(((())))", false));
+ assert_se(signature_is_single("((((s))))", false));
+ assert_se(signature_is_single("{ss}", true));
+ assert_se(signature_is_single("a{ss}", false));
+ assert_se(!signature_is_single("uu", false));
+ assert_se(!signature_is_single("", false));
+ assert_se(!signature_is_single("(", false));
+ assert_se(!signature_is_single(")", false));
+ assert_se(!signature_is_single("())", false));
+ assert_se(!signature_is_single("((())", false));
+ assert_se(!signature_is_single("{)", false));
+ assert_se(!signature_is_single("{}", true));
+ assert_se(!signature_is_single("{sss}", true));
+ assert_se(!signature_is_single("{s}", true));
+ assert_se(!signature_is_single("{ss}", false));
+ assert_se(!signature_is_single("{ass}", true));
+ assert_se(!signature_is_single("a}", true));
+
+ assert_se(signature_is_pair("yy"));
+ assert_se(signature_is_pair("ss"));
+ assert_se(signature_is_pair("sas"));
+ assert_se(signature_is_pair("sv"));
+ assert_se(signature_is_pair("sa(vs)"));
+ assert_se(!signature_is_pair(""));
+ assert_se(!signature_is_pair("va"));
+ assert_se(!signature_is_pair("sss"));
+ assert_se(!signature_is_pair("{s}ss"));
+
+ assert_se(signature_is_valid("ssa{ss}sssub", true));
+ assert_se(signature_is_valid("ssa{ss}sssub", false));
+ assert_se(signature_is_valid("{ss}", true));
+ assert_se(!signature_is_valid("{ss}", false));
+ assert_se(signature_is_valid("", true));
+ assert_se(signature_is_valid("", false));
+
+ assert_se(signature_is_valid("sssusa(uuubbba(uu)uuuu)a{u(uuuvas)}", false));
+
+ assert_se(!signature_is_valid("a", false));
+ assert_se(signature_is_valid("as", false));
+ assert_se(signature_is_valid("aas", false));
+ assert_se(signature_is_valid("aaas", false));
+ assert_se(signature_is_valid("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaad", false));
+ assert_se(signature_is_valid("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaas", false));
+ assert_se(!signature_is_valid("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaau", false));
+
+ assert_se(signature_is_valid("(((((((((((((((((((((((((((((((())))))))))))))))))))))))))))))))", false));
+ assert_se(!signature_is_valid("((((((((((((((((((((((((((((((((()))))))))))))))))))))))))))))))))", false));
+
+ assert_se(namespace_complex_pattern("", ""));
+ assert_se(namespace_complex_pattern("foobar", "foobar"));
+ assert_se(namespace_complex_pattern("foobar.waldo", "foobar.waldo"));
+ assert_se(namespace_complex_pattern("foobar.", "foobar.waldo"));
+ assert_se(namespace_complex_pattern("foobar.waldo", "foobar."));
+ assert_se(!namespace_complex_pattern("foobar.waldo", "foobar"));
+ assert_se(!namespace_complex_pattern("foobar", "foobar.waldo"));
+ assert_se(!namespace_complex_pattern("", "foo"));
+ assert_se(!namespace_complex_pattern("foo", ""));
+ assert_se(!namespace_complex_pattern("foo.", ""));
+
+ assert_se(path_complex_pattern("", ""));
+ assert_se(!path_complex_pattern("", "/"));
+ assert_se(!path_complex_pattern("/", ""));
+ assert_se(path_complex_pattern("/", "/"));
+ assert_se(path_complex_pattern("/foobar/", "/"));
+ assert_se(!path_complex_pattern("/foobar/", "/foobar"));
+ assert_se(path_complex_pattern("/foobar", "/foobar"));
+ assert_se(!path_complex_pattern("/foobar", "/foobar/"));
+ assert_se(!path_complex_pattern("/foobar", "/foobar/waldo"));
+ assert_se(path_complex_pattern("/foobar/", "/foobar/waldo"));
+ assert_se(path_complex_pattern("/foobar/waldo", "/foobar/"));
+
+ assert_se(path_simple_pattern("/foo/", "/foo/bar/waldo"));
+
+ assert_se(namespace_simple_pattern("", ""));
+ assert_se(namespace_simple_pattern("", ".foobar"));
+ assert_se(namespace_simple_pattern("foobar", "foobar"));
+ assert_se(namespace_simple_pattern("foobar.waldo", "foobar.waldo"));
+ assert_se(namespace_simple_pattern("foobar", "foobar.waldo"));
+ assert_se(!namespace_simple_pattern("foobar.waldo", "foobar"));
+ assert_se(!namespace_simple_pattern("", "foo"));
+ assert_se(!namespace_simple_pattern("foo", ""));
+ assert_se(namespace_simple_pattern("foo.", "foo.bar.waldo"));
+
+ assert_se(streq(object_path_startswith("/foo/bar", "/foo"), "bar"));
+ assert_se(streq(object_path_startswith("/foo", "/foo"), ""));
+ assert_se(streq(object_path_startswith("/foo", "/"), "foo"));
+ assert_se(streq(object_path_startswith("/", "/"), ""));
+ assert_se(!object_path_startswith("/foo", "/bar"));
+ assert_se(!object_path_startswith("/", "/bar"));
+ assert_se(!object_path_startswith("/foo", ""));
+
+ assert_se(object_path_is_valid("/foo/bar"));
+ assert_se(object_path_is_valid("/foo"));
+ assert_se(object_path_is_valid("/"));
+ assert_se(object_path_is_valid("/foo5"));
+ assert_se(object_path_is_valid("/foo_5"));
+ assert_se(!object_path_is_valid(""));
+ assert_se(!object_path_is_valid("/foo/"));
+ assert_se(!object_path_is_valid("//"));
+ assert_se(!object_path_is_valid("//foo"));
+ assert_se(!object_path_is_valid("/foo//bar"));
+ assert_se(!object_path_is_valid("/foo/aaaäöä"));
+
+ OBJECT_PATH_FOREACH_PREFIX(prefix, "/") {
+ log_info("<%s>", prefix);
+ assert_not_reached("???");
+ }
+
+ r = 0;
+ OBJECT_PATH_FOREACH_PREFIX(prefix, "/xxx") {
+ log_info("<%s>", prefix);
+ assert_se(streq(prefix, "/"));
+ assert_se(r == 0);
+ r++;
+ }
+ assert_se(r == 1);
+
+ r = 0;
+ OBJECT_PATH_FOREACH_PREFIX(prefix, "/xxx/yyy/zzz") {
+ log_info("<%s>", prefix);
+ assert_se(r != 0 || streq(prefix, "/xxx/yyy"));
+ assert_se(r != 1 || streq(prefix, "/xxx"));
+ assert_se(r != 2 || streq(prefix, "/"));
+ r++;
+ }
+ assert_se(r == 3);
+
+ return 0;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/test-bus-zero-copy.c b/src/libsystemd/libsystemd-internal/sd-bus/test-bus-zero-copy.c
new file mode 100644
index 0000000000..9e20d67670
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/test-bus-zero-copy.c
@@ -0,0 +1,210 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <sys/mman.h>
+
+#include <systemd/sd-bus.h>
+
+#include "alloc-util.h"
+#include "bus-dump.h"
+#include "bus-kernel.h"
+#include "bus-message.h"
+#include "fd-util.h"
+#include "log.h"
+#include "memfd-util.h"
+#include "string-util.h"
+#include "util.h"
+
+#define FIRST_ARRAY 17
+#define SECOND_ARRAY 33
+
+#define STRING_SIZE 123
+
+int main(int argc, char *argv[]) {
+ _cleanup_free_ char *name = NULL, *bus_name = NULL, *address = NULL;
+ const char *unique;
+ uint8_t *p;
+ sd_bus *a, *b;
+ int r, bus_ref;
+ sd_bus_message *m;
+ int f;
+ uint64_t sz;
+ uint32_t u32;
+ size_t i, l;
+ char *s;
+ _cleanup_close_ int sfd = -1;
+
+ log_set_max_level(LOG_DEBUG);
+
+ assert_se(asprintf(&name, "deine-mutter-%u", (unsigned) getpid()) >= 0);
+
+ bus_ref = bus_kernel_create_bus(name, false, &bus_name);
+ if (bus_ref == -ENOENT)
+ return EXIT_TEST_SKIP;
+
+ assert_se(bus_ref >= 0);
+
+ address = strappend("kernel:path=", bus_name);
+ assert_se(address);
+
+ r = sd_bus_new(&a);
+ assert_se(r >= 0);
+
+ r = sd_bus_new(&b);
+ assert_se(r >= 0);
+
+ r = sd_bus_set_address(a, address);
+ assert_se(r >= 0);
+
+ r = sd_bus_set_address(b, address);
+ assert_se(r >= 0);
+
+ r = sd_bus_start(a);
+ assert_se(r >= 0);
+
+ r = sd_bus_start(b);
+ assert_se(r >= 0);
+
+ r = sd_bus_get_unique_name(a, &unique);
+ assert_se(r >= 0);
+
+ r = sd_bus_message_new_method_call(b, &m, unique, "/a/path", "an.inter.face", "AMethod");
+ assert_se(r >= 0);
+
+ r = sd_bus_message_open_container(m, 'r', "aysay");
+ assert_se(r >= 0);
+
+ r = sd_bus_message_append_array_space(m, 'y', FIRST_ARRAY, (void**) &p);
+ assert_se(r >= 0);
+
+ p[0] = '<';
+ memset(p+1, 'L', FIRST_ARRAY-2);
+ p[FIRST_ARRAY-1] = '>';
+
+ f = memfd_new_and_map(NULL, STRING_SIZE, (void**) &s);
+ assert_se(f >= 0);
+
+ s[0] = '<';
+ for (i = 1; i < STRING_SIZE-2; i++)
+ s[i] = '0' + (i % 10);
+ s[STRING_SIZE-2] = '>';
+ s[STRING_SIZE-1] = 0;
+ munmap(s, STRING_SIZE);
+
+ r = memfd_get_size(f, &sz);
+ assert_se(r >= 0);
+ assert_se(sz == STRING_SIZE);
+
+ r = sd_bus_message_append_string_memfd(m, f, 0, (uint64_t) -1);
+ assert_se(r >= 0);
+
+ close(f);
+
+ f = memfd_new_and_map(NULL, SECOND_ARRAY, (void**) &p);
+ assert_se(f >= 0);
+
+ p[0] = '<';
+ memset(p+1, 'P', SECOND_ARRAY-2);
+ p[SECOND_ARRAY-1] = '>';
+ munmap(p, SECOND_ARRAY);
+
+ r = memfd_get_size(f, &sz);
+ assert_se(r >= 0);
+ assert_se(sz == SECOND_ARRAY);
+
+ r = sd_bus_message_append_array_memfd(m, 'y', f, 0, (uint64_t) -1);
+ assert_se(r >= 0);
+
+ close(f);
+
+ r = sd_bus_message_close_container(m);
+ assert_se(r >= 0);
+
+ r = sd_bus_message_append(m, "u", 4711);
+ assert_se(r >= 0);
+
+ assert_se((sfd = memfd_new_and_map(NULL, 6, (void**) &p)) >= 0);
+ memcpy(p, "abcd\0", 6);
+ munmap(p, 6);
+ assert_se(sd_bus_message_append_string_memfd(m, sfd, 1, 4) >= 0);
+
+ r = bus_message_seal(m, 55, 99*USEC_PER_SEC);
+ assert_se(r >= 0);
+
+ bus_message_dump(m, stdout, BUS_MESSAGE_DUMP_WITH_HEADER);
+
+ r = sd_bus_send(b, m, NULL);
+ assert_se(r >= 0);
+
+ sd_bus_message_unref(m);
+
+ r = sd_bus_process(a, &m);
+ assert_se(r > 0);
+
+ bus_message_dump(m, stdout, BUS_MESSAGE_DUMP_WITH_HEADER);
+ sd_bus_message_rewind(m, true);
+
+ r = sd_bus_message_enter_container(m, 'r', "aysay");
+ assert_se(r > 0);
+
+ r = sd_bus_message_read_array(m, 'y', (const void**) &p, &l);
+ assert_se(r > 0);
+ assert_se(l == FIRST_ARRAY);
+
+ assert_se(p[0] == '<');
+ for (i = 1; i < l-1; i++)
+ assert_se(p[i] == 'L');
+ assert_se(p[l-1] == '>');
+
+ r = sd_bus_message_read(m, "s", &s);
+ assert_se(r > 0);
+
+ assert_se(s[0] == '<');
+ for (i = 1; i < STRING_SIZE-2; i++)
+ assert_se(s[i] == (char) ('0' + (i % 10)));
+ assert_se(s[STRING_SIZE-2] == '>');
+ assert_se(s[STRING_SIZE-1] == 0);
+
+ r = sd_bus_message_read_array(m, 'y', (const void**) &p, &l);
+ assert_se(r > 0);
+ assert_se(l == SECOND_ARRAY);
+
+ assert_se(p[0] == '<');
+ for (i = 1; i < l-1; i++)
+ assert_se(p[i] == 'P');
+ assert_se(p[l-1] == '>');
+
+ r = sd_bus_message_exit_container(m);
+ assert_se(r > 0);
+
+ r = sd_bus_message_read(m, "u", &u32);
+ assert_se(r > 0);
+ assert_se(u32 == 4711);
+
+ r = sd_bus_message_read(m, "s", &s);
+ assert_se(r > 0);
+ assert_se(streq_ptr(s, "bcd"));
+
+ sd_bus_message_unref(m);
+
+ sd_bus_unref(a);
+ sd_bus_unref(b);
+
+ return 0;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-daemon/sd-daemon.c b/src/libsystemd/libsystemd-internal/sd-daemon/sd-daemon.c
new file mode 100644
index 0000000000..fa92199c43
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-daemon/sd-daemon.c
@@ -0,0 +1,622 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2010 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <errno.h>
+#include <limits.h>
+#include <mqueue.h>
+#include <netinet/in.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/un.h>
+#include <unistd.h>
+
+#include <systemd/sd-daemon.h>
+
+#include "alloc-util.h"
+#include "fd-util.h"
+#include "fs-util.h"
+#include "parse-util.h"
+#include "path-util.h"
+#include "socket-util.h"
+#include "strv.h"
+#include "util.h"
+
+#define SNDBUF_SIZE (8*1024*1024)
+
+static void unsetenv_all(bool unset_environment) {
+
+ if (!unset_environment)
+ return;
+
+ unsetenv("LISTEN_PID");
+ unsetenv("LISTEN_FDS");
+ unsetenv("LISTEN_FDNAMES");
+}
+
+_public_ int sd_listen_fds(int unset_environment) {
+ const char *e;
+ int n, r, fd;
+ pid_t pid;
+
+ e = getenv("LISTEN_PID");
+ if (!e) {
+ r = 0;
+ goto finish;
+ }
+
+ r = parse_pid(e, &pid);
+ if (r < 0)
+ goto finish;
+
+ /* Is this for us? */
+ if (getpid() != pid) {
+ r = 0;
+ goto finish;
+ }
+
+ e = getenv("LISTEN_FDS");
+ if (!e) {
+ r = 0;
+ goto finish;
+ }
+
+ r = safe_atoi(e, &n);
+ if (r < 0)
+ goto finish;
+
+ assert_cc(SD_LISTEN_FDS_START < INT_MAX);
+ if (n <= 0 || n > INT_MAX - SD_LISTEN_FDS_START) {
+ r = -EINVAL;
+ goto finish;
+ }
+
+ for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++) {
+ r = fd_cloexec(fd, true);
+ if (r < 0)
+ goto finish;
+ }
+
+ r = n;
+
+finish:
+ unsetenv_all(unset_environment);
+ return r;
+}
+
+_public_ int sd_listen_fds_with_names(int unset_environment, char ***names) {
+ _cleanup_strv_free_ char **l = NULL;
+ bool have_names;
+ int n_names = 0, n_fds;
+ const char *e;
+ int r;
+
+ if (!names)
+ return sd_listen_fds(unset_environment);
+
+ e = getenv("LISTEN_FDNAMES");
+ if (e) {
+ n_names = strv_split_extract(&l, e, ":", EXTRACT_DONT_COALESCE_SEPARATORS);
+ if (n_names < 0) {
+ unsetenv_all(unset_environment);
+ return n_names;
+ }
+
+ have_names = true;
+ } else
+ have_names = false;
+
+ n_fds = sd_listen_fds(unset_environment);
+ if (n_fds <= 0)
+ return n_fds;
+
+ if (have_names) {
+ if (n_names != n_fds)
+ return -EINVAL;
+ } else {
+ r = strv_extend_n(&l, "unknown", n_fds);
+ if (r < 0)
+ return r;
+ }
+
+ *names = l;
+ l = NULL;
+
+ return n_fds;
+}
+
+_public_ int sd_is_fifo(int fd, const char *path) {
+ struct stat st_fd;
+
+ assert_return(fd >= 0, -EBADF);
+
+ if (fstat(fd, &st_fd) < 0)
+ return -errno;
+
+ if (!S_ISFIFO(st_fd.st_mode))
+ return 0;
+
+ if (path) {
+ struct stat st_path;
+
+ if (stat(path, &st_path) < 0) {
+
+ if (errno == ENOENT || errno == ENOTDIR)
+ return 0;
+
+ return -errno;
+ }
+
+ return
+ st_path.st_dev == st_fd.st_dev &&
+ st_path.st_ino == st_fd.st_ino;
+ }
+
+ return 1;
+}
+
+_public_ int sd_is_special(int fd, const char *path) {
+ struct stat st_fd;
+
+ assert_return(fd >= 0, -EBADF);
+
+ if (fstat(fd, &st_fd) < 0)
+ return -errno;
+
+ if (!S_ISREG(st_fd.st_mode) && !S_ISCHR(st_fd.st_mode))
+ return 0;
+
+ if (path) {
+ struct stat st_path;
+
+ if (stat(path, &st_path) < 0) {
+
+ if (errno == ENOENT || errno == ENOTDIR)
+ return 0;
+
+ return -errno;
+ }
+
+ if (S_ISREG(st_fd.st_mode) && S_ISREG(st_path.st_mode))
+ return
+ st_path.st_dev == st_fd.st_dev &&
+ st_path.st_ino == st_fd.st_ino;
+ else if (S_ISCHR(st_fd.st_mode) && S_ISCHR(st_path.st_mode))
+ return st_path.st_rdev == st_fd.st_rdev;
+ else
+ return 0;
+ }
+
+ return 1;
+}
+
+static int sd_is_socket_internal(int fd, int type, int listening) {
+ struct stat st_fd;
+
+ assert_return(fd >= 0, -EBADF);
+ assert_return(type >= 0, -EINVAL);
+
+ if (fstat(fd, &st_fd) < 0)
+ return -errno;
+
+ if (!S_ISSOCK(st_fd.st_mode))
+ return 0;
+
+ if (type != 0) {
+ int other_type = 0;
+ socklen_t l = sizeof(other_type);
+
+ if (getsockopt(fd, SOL_SOCKET, SO_TYPE, &other_type, &l) < 0)
+ return -errno;
+
+ if (l != sizeof(other_type))
+ return -EINVAL;
+
+ if (other_type != type)
+ return 0;
+ }
+
+ if (listening >= 0) {
+ int accepting = 0;
+ socklen_t l = sizeof(accepting);
+
+ if (getsockopt(fd, SOL_SOCKET, SO_ACCEPTCONN, &accepting, &l) < 0)
+ return -errno;
+
+ if (l != sizeof(accepting))
+ return -EINVAL;
+
+ if (!accepting != !listening)
+ return 0;
+ }
+
+ return 1;
+}
+
+_public_ int sd_is_socket(int fd, int family, int type, int listening) {
+ int r;
+
+ assert_return(fd >= 0, -EBADF);
+ assert_return(family >= 0, -EINVAL);
+
+ r = sd_is_socket_internal(fd, type, listening);
+ if (r <= 0)
+ return r;
+
+ if (family > 0) {
+ union sockaddr_union sockaddr = {};
+ socklen_t l = sizeof(sockaddr);
+
+ if (getsockname(fd, &sockaddr.sa, &l) < 0)
+ return -errno;
+
+ if (l < sizeof(sa_family_t))
+ return -EINVAL;
+
+ return sockaddr.sa.sa_family == family;
+ }
+
+ return 1;
+}
+
+_public_ int sd_is_socket_inet(int fd, int family, int type, int listening, uint16_t port) {
+ union sockaddr_union sockaddr = {};
+ socklen_t l = sizeof(sockaddr);
+ int r;
+
+ assert_return(fd >= 0, -EBADF);
+ assert_return(IN_SET(family, 0, AF_INET, AF_INET6), -EINVAL);
+
+ r = sd_is_socket_internal(fd, type, listening);
+ if (r <= 0)
+ return r;
+
+ if (getsockname(fd, &sockaddr.sa, &l) < 0)
+ return -errno;
+
+ if (l < sizeof(sa_family_t))
+ return -EINVAL;
+
+ if (sockaddr.sa.sa_family != AF_INET &&
+ sockaddr.sa.sa_family != AF_INET6)
+ return 0;
+
+ if (family != 0)
+ if (sockaddr.sa.sa_family != family)
+ return 0;
+
+ if (port > 0) {
+ if (sockaddr.sa.sa_family == AF_INET) {
+ if (l < sizeof(struct sockaddr_in))
+ return -EINVAL;
+
+ return htons(port) == sockaddr.in.sin_port;
+ } else {
+ if (l < sizeof(struct sockaddr_in6))
+ return -EINVAL;
+
+ return htons(port) == sockaddr.in6.sin6_port;
+ }
+ }
+
+ return 1;
+}
+
+_public_ int sd_is_socket_unix(int fd, int type, int listening, const char *path, size_t length) {
+ union sockaddr_union sockaddr = {};
+ socklen_t l = sizeof(sockaddr);
+ int r;
+
+ assert_return(fd >= 0, -EBADF);
+
+ r = sd_is_socket_internal(fd, type, listening);
+ if (r <= 0)
+ return r;
+
+ if (getsockname(fd, &sockaddr.sa, &l) < 0)
+ return -errno;
+
+ if (l < sizeof(sa_family_t))
+ return -EINVAL;
+
+ if (sockaddr.sa.sa_family != AF_UNIX)
+ return 0;
+
+ if (path) {
+ if (length == 0)
+ length = strlen(path);
+
+ if (length == 0)
+ /* Unnamed socket */
+ return l == offsetof(struct sockaddr_un, sun_path);
+
+ if (path[0])
+ /* Normal path socket */
+ return
+ (l >= offsetof(struct sockaddr_un, sun_path) + length + 1) &&
+ memcmp(path, sockaddr.un.sun_path, length+1) == 0;
+ else
+ /* Abstract namespace socket */
+ return
+ (l == offsetof(struct sockaddr_un, sun_path) + length) &&
+ memcmp(path, sockaddr.un.sun_path, length) == 0;
+ }
+
+ return 1;
+}
+
+_public_ int sd_is_mq(int fd, const char *path) {
+ struct mq_attr attr;
+
+ /* Check that the fd is valid */
+ assert_return(fcntl(fd, F_GETFD) >= 0, -errno);
+
+ if (mq_getattr(fd, &attr) < 0) {
+ if (errno == EBADF)
+ /* A non-mq fd (or an invalid one, but we ruled that out above) */
+ return 0;
+ return -errno;
+ }
+
+ if (path) {
+ char fpath[PATH_MAX];
+ struct stat a, b;
+
+ assert_return(path_is_absolute(path), -EINVAL);
+
+ if (fstat(fd, &a) < 0)
+ return -errno;
+
+ strncpy(stpcpy(fpath, "/dev/mqueue"), path, sizeof(fpath) - 12);
+ fpath[sizeof(fpath)-1] = 0;
+
+ if (stat(fpath, &b) < 0)
+ return -errno;
+
+ if (a.st_dev != b.st_dev ||
+ a.st_ino != b.st_ino)
+ return 0;
+ }
+
+ return 1;
+}
+
+_public_ int sd_pid_notify_with_fds(pid_t pid, int unset_environment, const char *state, const int *fds, unsigned n_fds) {
+ union sockaddr_union sockaddr = {
+ .sa.sa_family = AF_UNIX,
+ };
+ struct iovec iovec = {
+ .iov_base = (char*) state,
+ };
+ struct msghdr msghdr = {
+ .msg_iov = &iovec,
+ .msg_iovlen = 1,
+ .msg_name = &sockaddr,
+ };
+ _cleanup_close_ int fd = -1;
+ struct cmsghdr *cmsg = NULL;
+ const char *e;
+ bool have_pid;
+ int r;
+
+ if (!state) {
+ r = -EINVAL;
+ goto finish;
+ }
+
+ if (n_fds > 0 && !fds) {
+ r = -EINVAL;
+ goto finish;
+ }
+
+ e = getenv("NOTIFY_SOCKET");
+ if (!e)
+ return 0;
+
+ /* Must be an abstract socket, or an absolute path */
+ if ((e[0] != '@' && e[0] != '/') || e[1] == 0) {
+ r = -EINVAL;
+ goto finish;
+ }
+
+ if (strlen(e) > sizeof(sockaddr.un.sun_path)) {
+ r = -EINVAL;
+ goto finish;
+ }
+
+ fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0);
+ if (fd < 0) {
+ r = -errno;
+ goto finish;
+ }
+
+ fd_inc_sndbuf(fd, SNDBUF_SIZE);
+
+ iovec.iov_len = strlen(state);
+
+ strncpy(sockaddr.un.sun_path, e, sizeof(sockaddr.un.sun_path));
+ if (sockaddr.un.sun_path[0] == '@')
+ sockaddr.un.sun_path[0] = 0;
+
+ msghdr.msg_namelen = SOCKADDR_UN_LEN(sockaddr.un);
+
+ have_pid = pid != 0 && pid != getpid();
+
+ if (n_fds > 0 || have_pid) {
+ /* CMSG_SPACE(0) may return value different than zero, which results in miscalculated controllen. */
+ msghdr.msg_controllen =
+ (n_fds > 0 ? CMSG_SPACE(sizeof(int) * n_fds) : 0) +
+ (have_pid ? CMSG_SPACE(sizeof(struct ucred)) : 0);
+
+ msghdr.msg_control = alloca0(msghdr.msg_controllen);
+
+ cmsg = CMSG_FIRSTHDR(&msghdr);
+ if (n_fds > 0) {
+ cmsg->cmsg_level = SOL_SOCKET;
+ cmsg->cmsg_type = SCM_RIGHTS;
+ cmsg->cmsg_len = CMSG_LEN(sizeof(int) * n_fds);
+
+ memcpy(CMSG_DATA(cmsg), fds, sizeof(int) * n_fds);
+
+ if (have_pid)
+ assert_se(cmsg = CMSG_NXTHDR(&msghdr, cmsg));
+ }
+
+ if (have_pid) {
+ struct ucred *ucred;
+
+ cmsg->cmsg_level = SOL_SOCKET;
+ cmsg->cmsg_type = SCM_CREDENTIALS;
+ cmsg->cmsg_len = CMSG_LEN(sizeof(struct ucred));
+
+ ucred = (struct ucred*) CMSG_DATA(cmsg);
+ ucred->pid = pid;
+ ucred->uid = getuid();
+ ucred->gid = getgid();
+ }
+ }
+
+ /* First try with fake ucred data, as requested */
+ if (sendmsg(fd, &msghdr, MSG_NOSIGNAL) >= 0) {
+ r = 1;
+ goto finish;
+ }
+
+ /* If that failed, try with our own ucred instead */
+ if (have_pid) {
+ msghdr.msg_controllen -= CMSG_SPACE(sizeof(struct ucred));
+ if (msghdr.msg_controllen == 0)
+ msghdr.msg_control = NULL;
+
+ if (sendmsg(fd, &msghdr, MSG_NOSIGNAL) >= 0) {
+ r = 1;
+ goto finish;
+ }
+ }
+
+ r = -errno;
+
+finish:
+ if (unset_environment)
+ unsetenv("NOTIFY_SOCKET");
+
+ return r;
+}
+
+_public_ int sd_pid_notify(pid_t pid, int unset_environment, const char *state) {
+ return sd_pid_notify_with_fds(pid, unset_environment, state, NULL, 0);
+}
+
+_public_ int sd_notify(int unset_environment, const char *state) {
+ return sd_pid_notify_with_fds(0, unset_environment, state, NULL, 0);
+}
+
+_public_ int sd_pid_notifyf(pid_t pid, int unset_environment, const char *format, ...) {
+ _cleanup_free_ char *p = NULL;
+ int r;
+
+ if (format) {
+ va_list ap;
+
+ va_start(ap, format);
+ r = vasprintf(&p, format, ap);
+ va_end(ap);
+
+ if (r < 0 || !p)
+ return -ENOMEM;
+ }
+
+ return sd_pid_notify(pid, unset_environment, p);
+}
+
+_public_ int sd_notifyf(int unset_environment, const char *format, ...) {
+ _cleanup_free_ char *p = NULL;
+ int r;
+
+ if (format) {
+ va_list ap;
+
+ va_start(ap, format);
+ r = vasprintf(&p, format, ap);
+ va_end(ap);
+
+ if (r < 0 || !p)
+ return -ENOMEM;
+ }
+
+ return sd_pid_notify(0, unset_environment, p);
+}
+
+_public_ int sd_booted(void) {
+ /* We test whether the runtime unit file directory has been
+ * created. This takes place in mount-setup.c, so is
+ * guaranteed to happen very early during boot. */
+
+ return laccess("/run/systemd/system/", F_OK) >= 0;
+}
+
+_public_ int sd_watchdog_enabled(int unset_environment, uint64_t *usec) {
+ const char *s, *p = ""; /* p is set to dummy value to do unsetting */
+ uint64_t u;
+ int r = 0;
+
+ s = getenv("WATCHDOG_USEC");
+ if (!s)
+ goto finish;
+
+ r = safe_atou64(s, &u);
+ if (r < 0)
+ goto finish;
+ if (u <= 0 || u >= USEC_INFINITY) {
+ r = -EINVAL;
+ goto finish;
+ }
+
+ p = getenv("WATCHDOG_PID");
+ if (p) {
+ pid_t pid;
+
+ r = parse_pid(p, &pid);
+ if (r < 0)
+ goto finish;
+
+ /* Is this for us? */
+ if (getpid() != pid) {
+ r = 0;
+ goto finish;
+ }
+ }
+
+ if (usec)
+ *usec = u;
+
+ r = 1;
+
+finish:
+ if (unset_environment && s)
+ unsetenv("WATCHDOG_USEC");
+ if (unset_environment && p)
+ unsetenv("WATCHDOG_PID");
+
+ return r;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-device/device-enumerator-private.h b/src/libsystemd/libsystemd-internal/sd-device/device-enumerator-private.h
new file mode 100644
index 0000000000..d46e26b56e
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-device/device-enumerator-private.h
@@ -0,0 +1,34 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2015 Tom Gundersen <teg@jklm.no>
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <systemd/sd-device.h>
+
+int device_enumerator_scan_devices(sd_device_enumerator *enumeartor);
+int device_enumerator_scan_subsystems(sd_device_enumerator *enumeartor);
+int device_enumerator_add_device(sd_device_enumerator *enumerator, sd_device *device);
+int device_enumerator_add_match_is_initialized(sd_device_enumerator *enumerator);
+sd_device *device_enumerator_get_first(sd_device_enumerator *enumerator);
+sd_device *device_enumerator_get_next(sd_device_enumerator *enumerator);
+
+#define FOREACH_DEVICE_AND_SUBSYSTEM(enumerator, device) \
+ for (device = device_enumerator_get_first(enumerator); \
+ device; \
+ device = device_enumerator_get_next(enumerator))
diff --git a/src/libsystemd/libsystemd-internal/sd-device/device-enumerator.c b/src/libsystemd/libsystemd-internal/sd-device/device-enumerator.c
new file mode 100644
index 0000000000..796728ee0e
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-device/device-enumerator.c
@@ -0,0 +1,986 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2008-2012 Kay Sievers <kay@vrfy.org>
+ Copyright 2014-2015 Tom Gundersen <teg@jklm.no>
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <systemd/sd-device.h>
+
+#include "alloc-util.h"
+#include "device-enumerator-private.h"
+#include "device-util.h"
+#include "dirent-util.h"
+#include "fd-util.h"
+#include "prioq.h"
+#include "set.h"
+#include "string-util.h"
+#include "strv.h"
+#include "util.h"
+
+#define DEVICE_ENUMERATE_MAX_DEPTH 256
+
+typedef enum DeviceEnumerationType {
+ DEVICE_ENUMERATION_TYPE_DEVICES,
+ DEVICE_ENUMERATION_TYPE_SUBSYSTEMS,
+ _DEVICE_ENUMERATION_TYPE_MAX,
+ _DEVICE_ENUMERATION_TYPE_INVALID = -1,
+} DeviceEnumerationType;
+
+struct sd_device_enumerator {
+ unsigned n_ref;
+
+ DeviceEnumerationType type;
+ Prioq *devices;
+ bool scan_uptodate;
+
+ Set *match_subsystem;
+ Set *nomatch_subsystem;
+ Hashmap *match_sysattr;
+ Hashmap *nomatch_sysattr;
+ Hashmap *match_property;
+ Set *match_sysname;
+ Set *match_tag;
+ sd_device *match_parent;
+ bool match_allow_uninitialized;
+};
+
+_public_ int sd_device_enumerator_new(sd_device_enumerator **ret) {
+ _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *enumerator = NULL;
+
+ assert(ret);
+
+ enumerator = new0(sd_device_enumerator, 1);
+ if (!enumerator)
+ return -ENOMEM;
+
+ enumerator->n_ref = 1;
+ enumerator->type = _DEVICE_ENUMERATION_TYPE_INVALID;
+
+ *ret = enumerator;
+ enumerator = NULL;
+
+ return 0;
+}
+
+_public_ sd_device_enumerator *sd_device_enumerator_ref(sd_device_enumerator *enumerator) {
+ assert_return(enumerator, NULL);
+
+ assert_se((++ enumerator->n_ref) >= 2);
+
+ return enumerator;
+}
+
+_public_ sd_device_enumerator *sd_device_enumerator_unref(sd_device_enumerator *enumerator) {
+ if (enumerator && (-- enumerator->n_ref) == 0) {
+ sd_device *device;
+
+ while ((device = prioq_pop(enumerator->devices)))
+ sd_device_unref(device);
+
+ prioq_free(enumerator->devices);
+
+ set_free_free(enumerator->match_subsystem);
+ set_free_free(enumerator->nomatch_subsystem);
+ hashmap_free_free_free(enumerator->match_sysattr);
+ hashmap_free_free_free(enumerator->nomatch_sysattr);
+ hashmap_free_free_free(enumerator->match_property);
+ set_free_free(enumerator->match_sysname);
+ set_free_free(enumerator->match_tag);
+ sd_device_unref(enumerator->match_parent);
+
+ free(enumerator);
+ }
+
+ return NULL;
+}
+
+_public_ int sd_device_enumerator_add_match_subsystem(sd_device_enumerator *enumerator, const char *subsystem, int match) {
+ Set **set;
+ int r;
+
+ assert_return(enumerator, -EINVAL);
+ assert_return(subsystem, -EINVAL);
+
+ if (match)
+ set = &enumerator->match_subsystem;
+ else
+ set = &enumerator->nomatch_subsystem;
+
+ r = set_ensure_allocated(set, NULL);
+ if (r < 0)
+ return r;
+
+ r = set_put_strdup(*set, subsystem);
+ if (r < 0)
+ return r;
+
+ enumerator->scan_uptodate = false;
+
+ return 0;
+}
+
+_public_ int sd_device_enumerator_add_match_sysattr(sd_device_enumerator *enumerator, const char *_sysattr, const char *_value, int match) {
+ _cleanup_free_ char *sysattr = NULL, *value = NULL;
+ Hashmap **hashmap;
+ int r;
+
+ assert_return(enumerator, -EINVAL);
+ assert_return(_sysattr, -EINVAL);
+
+ if (match)
+ hashmap = &enumerator->match_sysattr;
+ else
+ hashmap = &enumerator->nomatch_sysattr;
+
+ r = hashmap_ensure_allocated(hashmap, NULL);
+ if (r < 0)
+ return r;
+
+ sysattr = strdup(_sysattr);
+ if (!sysattr)
+ return -ENOMEM;
+
+ if (_value) {
+ value = strdup(_value);
+ if (!value)
+ return -ENOMEM;
+ }
+
+ r = hashmap_put(*hashmap, sysattr, value);
+ if (r < 0)
+ return r;
+
+ sysattr = NULL;
+ value = NULL;
+
+ enumerator->scan_uptodate = false;
+
+ return 0;
+}
+
+_public_ int sd_device_enumerator_add_match_property(sd_device_enumerator *enumerator, const char *_property, const char *_value) {
+ _cleanup_free_ char *property = NULL, *value = NULL;
+ int r;
+
+ assert_return(enumerator, -EINVAL);
+ assert_return(_property, -EINVAL);
+
+ r = hashmap_ensure_allocated(&enumerator->match_property, NULL);
+ if (r < 0)
+ return r;
+
+ property = strdup(_property);
+ if (!property)
+ return -ENOMEM;
+
+ if (_value) {
+ value = strdup(_value);
+ if (!value)
+ return -ENOMEM;
+ }
+
+ r = hashmap_put(enumerator->match_property, property, value);
+ if (r < 0)
+ return r;
+
+ property = NULL;
+ value = NULL;
+
+ enumerator->scan_uptodate = false;
+
+ return 0;
+}
+
+_public_ int sd_device_enumerator_add_match_sysname(sd_device_enumerator *enumerator, const char *sysname) {
+ int r;
+
+ assert_return(enumerator, -EINVAL);
+ assert_return(sysname, -EINVAL);
+
+ r = set_ensure_allocated(&enumerator->match_sysname, NULL);
+ if (r < 0)
+ return r;
+
+ r = set_put_strdup(enumerator->match_sysname, sysname);
+ if (r < 0)
+ return r;
+
+ enumerator->scan_uptodate = false;
+
+ return 0;
+}
+
+_public_ int sd_device_enumerator_add_match_tag(sd_device_enumerator *enumerator, const char *tag) {
+ int r;
+
+ assert_return(enumerator, -EINVAL);
+ assert_return(tag, -EINVAL);
+
+ r = set_ensure_allocated(&enumerator->match_tag, NULL);
+ if (r < 0)
+ return r;
+
+ r = set_put_strdup(enumerator->match_tag, tag);
+ if (r < 0)
+ return r;
+
+ enumerator->scan_uptodate = false;
+
+ return 0;
+}
+
+_public_ int sd_device_enumerator_add_match_parent(sd_device_enumerator *enumerator, sd_device *parent) {
+ assert_return(enumerator, -EINVAL);
+ assert_return(parent, -EINVAL);
+
+ sd_device_unref(enumerator->match_parent);
+ enumerator->match_parent = sd_device_ref(parent);
+
+ enumerator->scan_uptodate = false;
+
+ return 0;
+}
+
+_public_ int sd_device_enumerator_allow_uninitialized(sd_device_enumerator *enumerator) {
+ assert_return(enumerator, -EINVAL);
+
+ enumerator->match_allow_uninitialized = true;
+
+ enumerator->scan_uptodate = false;
+
+ return 0;
+}
+
+int device_enumerator_add_match_is_initialized(sd_device_enumerator *enumerator) {
+ assert_return(enumerator, -EINVAL);
+
+ enumerator->match_allow_uninitialized = false;
+
+ enumerator->scan_uptodate = false;
+
+ return 0;
+}
+
+static int device_compare(const void *_a, const void *_b) {
+ sd_device *a = (sd_device *)_a, *b = (sd_device *)_b;
+ const char *devpath_a, *devpath_b, *sound_a;
+ bool delay_a, delay_b;
+
+ assert_se(sd_device_get_devpath(a, &devpath_a) >= 0);
+ assert_se(sd_device_get_devpath(b, &devpath_b) >= 0);
+
+ sound_a = strstr(devpath_a, "/sound/card");
+ if (sound_a) {
+ /* For sound cards the control device must be enumerated last to
+ * make sure it's the final device node that gets ACLs applied.
+ * Applications rely on this fact and use ACL changes on the
+ * control node as an indicator that the ACL change of the
+ * entire sound card completed. The kernel makes this guarantee
+ * when creating those devices, and hence we should too when
+ * enumerating them. */
+ sound_a += strlen("/sound/card");
+ sound_a = strchr(sound_a, '/');
+
+ if (sound_a) {
+ unsigned prefix_len;
+
+ prefix_len = sound_a - devpath_a;
+
+ if (strncmp(devpath_a, devpath_b, prefix_len) == 0) {
+ const char *sound_b;
+
+ sound_b = devpath_b + prefix_len;
+
+ if (startswith(sound_a, "/controlC") &&
+ !startswith(sound_b, "/contolC"))
+ return 1;
+
+ if (!startswith(sound_a, "/controlC") &&
+ startswith(sound_b, "/controlC"))
+ return -1;
+ }
+ }
+ }
+
+ /* md and dm devices are enumerated after all other devices */
+ delay_a = strstr(devpath_a, "/block/md") || strstr(devpath_a, "/block/dm-");
+ delay_b = strstr(devpath_b, "/block/md") || strstr(devpath_b, "/block/dm-");
+ if (delay_a != delay_b)
+ return delay_a - delay_b;
+
+ return strcmp(devpath_a, devpath_b);
+}
+
+int device_enumerator_add_device(sd_device_enumerator *enumerator, sd_device *device) {
+ int r;
+
+ assert_return(enumerator, -EINVAL);
+ assert_return(device, -EINVAL);
+
+ r = prioq_ensure_allocated(&enumerator->devices, device_compare);
+ if (r < 0)
+ return r;
+
+ r = prioq_put(enumerator->devices, device, NULL);
+ if (r < 0)
+ return r;
+
+ sd_device_ref(device);
+
+ return 0;
+}
+
+static bool match_sysattr_value(sd_device *device, const char *sysattr, const char *match_value) {
+ const char *value;
+ int r;
+
+ assert(device);
+ assert(sysattr);
+
+ r = sd_device_get_sysattr_value(device, sysattr, &value);
+ if (r < 0)
+ return false;
+
+ if (!match_value)
+ return true;
+
+ if (fnmatch(match_value, value, 0) == 0)
+ return true;
+
+ return false;
+}
+
+static bool match_sysattr(sd_device_enumerator *enumerator, sd_device *device) {
+ const char *sysattr;
+ const char *value;
+ Iterator i;
+
+ assert(enumerator);
+ assert(device);
+
+ HASHMAP_FOREACH_KEY(value, sysattr, enumerator->nomatch_sysattr, i)
+ if (match_sysattr_value(device, sysattr, value))
+ return false;
+
+ HASHMAP_FOREACH_KEY(value, sysattr, enumerator->match_sysattr, i)
+ if (!match_sysattr_value(device, sysattr, value))
+ return false;
+
+ return true;
+}
+
+static bool match_property(sd_device_enumerator *enumerator, sd_device *device) {
+ const char *property;
+ const char *value;
+ Iterator i;
+
+ assert(enumerator);
+ assert(device);
+
+ if (hashmap_isempty(enumerator->match_property))
+ return true;
+
+ HASHMAP_FOREACH_KEY(value, property, enumerator->match_property, i) {
+ const char *property_dev, *value_dev;
+
+ FOREACH_DEVICE_PROPERTY(device, property_dev, value_dev) {
+ if (fnmatch(property, property_dev, 0) != 0)
+ continue;
+
+ if (!value && !value_dev)
+ return true;
+
+ if (!value || !value_dev)
+ continue;
+
+ if (fnmatch(value, value_dev, 0) == 0)
+ return true;
+ }
+ }
+
+ return false;
+}
+
+static bool match_tag(sd_device_enumerator *enumerator, sd_device *device) {
+ const char *tag;
+ Iterator i;
+
+ assert(enumerator);
+ assert(device);
+
+ SET_FOREACH(tag, enumerator->match_tag, i)
+ if (!sd_device_has_tag(device, tag))
+ return false;
+
+ return true;
+}
+
+static bool match_parent(sd_device_enumerator *enumerator, sd_device *device) {
+ const char *devpath, *devpath_dev;
+ int r;
+
+ assert(enumerator);
+ assert(device);
+
+ if (!enumerator->match_parent)
+ return true;
+
+ r = sd_device_get_devpath(enumerator->match_parent, &devpath);
+ assert(r >= 0);
+
+ r = sd_device_get_devpath(device, &devpath_dev);
+ assert(r >= 0);
+
+ return startswith(devpath_dev, devpath);
+}
+
+static bool match_sysname(sd_device_enumerator *enumerator, const char *sysname) {
+ const char *sysname_match;
+ Iterator i;
+
+ assert(enumerator);
+ assert(sysname);
+
+ if (set_isempty(enumerator->match_sysname))
+ return true;
+
+ SET_FOREACH(sysname_match, enumerator->match_sysname, i)
+ if (fnmatch(sysname_match, sysname, 0) == 0)
+ return true;
+
+ return false;
+}
+
+static int enumerator_scan_dir_and_add_devices(sd_device_enumerator *enumerator, const char *basedir, const char *subdir1, const char *subdir2) {
+ _cleanup_closedir_ DIR *dir = NULL;
+ char *path;
+ struct dirent *dent;
+ int r = 0;
+
+ assert(enumerator);
+ assert(basedir);
+
+ path = strjoina("/sys/", basedir, "/");
+
+ if (subdir1)
+ path = strjoina(path, subdir1, "/");
+
+ if (subdir2)
+ path = strjoina(path, subdir2, "/");
+
+ dir = opendir(path);
+ if (!dir)
+ return -errno;
+
+ FOREACH_DIRENT_ALL(dent, dir, return -errno) {
+ _cleanup_(sd_device_unrefp) sd_device *device = NULL;
+ char syspath[strlen(path) + 1 + strlen(dent->d_name) + 1];
+ dev_t devnum;
+ int ifindex, initialized, k;
+
+ if (dent->d_name[0] == '.')
+ continue;
+
+ if (!match_sysname(enumerator, dent->d_name))
+ continue;
+
+ (void)sprintf(syspath, "%s%s", path, dent->d_name);
+
+ k = sd_device_new_from_syspath(&device, syspath);
+ if (k < 0) {
+ if (k != -ENODEV)
+ /* this is necessarily racey, so ignore missing devices */
+ r = k;
+
+ continue;
+ }
+
+ k = sd_device_get_devnum(device, &devnum);
+ if (k < 0) {
+ r = k;
+ continue;
+ }
+
+ k = sd_device_get_ifindex(device, &ifindex);
+ if (k < 0) {
+ r = k;
+ continue;
+ }
+
+ k = sd_device_get_is_initialized(device, &initialized);
+ if (k < 0) {
+ r = k;
+ continue;
+ }
+
+ /*
+ * All devices with a device node or network interfaces
+ * possibly need udev to adjust the device node permission
+ * or context, or rename the interface before it can be
+ * reliably used from other processes.
+ *
+ * For now, we can only check these types of devices, we
+ * might not store a database, and have no way to find out
+ * for all other types of devices.
+ */
+ if (!enumerator->match_allow_uninitialized &&
+ !initialized &&
+ (major(devnum) > 0 || ifindex > 0))
+ continue;
+
+ if (!match_parent(enumerator, device))
+ continue;
+
+ if (!match_tag(enumerator, device))
+ continue;
+
+ if (!match_property(enumerator, device))
+ continue;
+
+ if (!match_sysattr(enumerator, device))
+ continue;
+
+ k = device_enumerator_add_device(enumerator, device);
+ if (k < 0)
+ r = k;
+ }
+
+ return r;
+}
+
+static bool match_subsystem(sd_device_enumerator *enumerator, const char *subsystem) {
+ const char *subsystem_match;
+ Iterator i;
+
+ assert(enumerator);
+
+ if (!subsystem)
+ return false;
+
+ SET_FOREACH(subsystem_match, enumerator->nomatch_subsystem, i)
+ if (fnmatch(subsystem_match, subsystem, 0) == 0)
+ return false;
+
+ if (set_isempty(enumerator->match_subsystem))
+ return true;
+
+ SET_FOREACH(subsystem_match, enumerator->match_subsystem, i)
+ if (fnmatch(subsystem_match, subsystem, 0) == 0)
+ return true;
+
+ return false;
+}
+
+static int enumerator_scan_dir(sd_device_enumerator *enumerator, const char *basedir, const char *subdir, const char *subsystem) {
+ _cleanup_closedir_ DIR *dir = NULL;
+ char *path;
+ struct dirent *dent;
+ int r = 0;
+
+ path = strjoina("/sys/", basedir);
+
+ dir = opendir(path);
+ if (!dir)
+ return -errno;
+
+ log_debug(" device-enumerator: scanning %s", path);
+
+ FOREACH_DIRENT_ALL(dent, dir, return -errno) {
+ int k;
+
+ if (dent->d_name[0] == '.')
+ continue;
+
+ if (!match_subsystem(enumerator, subsystem ? : dent->d_name))
+ continue;
+
+ k = enumerator_scan_dir_and_add_devices(enumerator, basedir, dent->d_name, subdir);
+ if (k < 0)
+ r = k;
+ }
+
+ return r;
+}
+
+static int enumerator_scan_devices_tag(sd_device_enumerator *enumerator, const char *tag) {
+ _cleanup_closedir_ DIR *dir = NULL;
+ char *path;
+ struct dirent *dent;
+ int r = 0;
+
+ assert(enumerator);
+ assert(tag);
+
+ path = strjoina("/run/udev/tags/", tag);
+
+ dir = opendir(path);
+ if (!dir) {
+ if (errno == ENOENT)
+ return 0;
+ else {
+ log_error("sd-device-enumerator: could not open tags directory %s: %m", path);
+ return -errno;
+ }
+ }
+
+ /* TODO: filter away subsystems? */
+
+ FOREACH_DIRENT_ALL(dent, dir, return -errno) {
+ _cleanup_(sd_device_unrefp) sd_device *device = NULL;
+ const char *subsystem, *sysname;
+ int k;
+
+ if (dent->d_name[0] == '.')
+ continue;
+
+ k = sd_device_new_from_device_id(&device, dent->d_name);
+ if (k < 0) {
+ if (k != -ENODEV)
+ /* this is necessarily racy, so ignore missing devices */
+ r = k;
+
+ continue;
+ }
+
+ k = sd_device_get_subsystem(device, &subsystem);
+ if (k < 0) {
+ r = k;
+ continue;
+ }
+
+ if (!match_subsystem(enumerator, subsystem))
+ continue;
+
+ k = sd_device_get_sysname(device, &sysname);
+ if (k < 0) {
+ r = k;
+ continue;
+ }
+
+ if (!match_sysname(enumerator, sysname))
+ continue;
+
+ if (!match_parent(enumerator, device))
+ continue;
+
+ if (!match_property(enumerator, device))
+ continue;
+
+ if (!match_sysattr(enumerator, device))
+ continue;
+
+ k = device_enumerator_add_device(enumerator, device);
+ if (k < 0) {
+ r = k;
+ continue;
+ }
+ }
+
+ return r;
+}
+
+static int enumerator_scan_devices_tags(sd_device_enumerator *enumerator) {
+ const char *tag;
+ Iterator i;
+ int r;
+
+ assert(enumerator);
+
+ SET_FOREACH(tag, enumerator->match_tag, i) {
+ r = enumerator_scan_devices_tag(enumerator, tag);
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
+static int parent_add_child(sd_device_enumerator *enumerator, const char *path) {
+ _cleanup_(sd_device_unrefp) sd_device *device = NULL;
+ const char *subsystem, *sysname;
+ int r;
+
+ r = sd_device_new_from_syspath(&device, path);
+ if (r == -ENODEV)
+ /* this is necessarily racy, so ignore missing devices */
+ return 0;
+ else if (r < 0)
+ return r;
+
+ r = sd_device_get_subsystem(device, &subsystem);
+ if (r == -ENOENT)
+ return 0;
+ if (r < 0)
+ return r;
+
+ if (!match_subsystem(enumerator, subsystem))
+ return 0;
+
+ r = sd_device_get_sysname(device, &sysname);
+ if (r < 0)
+ return r;
+
+ if (!match_sysname(enumerator, sysname))
+ return 0;
+
+ if (!match_property(enumerator, device))
+ return 0;
+
+ if (!match_sysattr(enumerator, device))
+ return 0;
+
+ r = device_enumerator_add_device(enumerator, device);
+ if (r < 0)
+ return r;
+
+ return 1;
+}
+
+static int parent_crawl_children(sd_device_enumerator *enumerator, const char *path, unsigned maxdepth) {
+ _cleanup_closedir_ DIR *dir = NULL;
+ struct dirent *dent;
+ int r = 0;
+
+ dir = opendir(path);
+ if (!dir) {
+ log_debug("sd-device-enumerate: could not open parent directory %s: %m", path);
+ return -errno;
+ }
+
+ FOREACH_DIRENT_ALL(dent, dir, return -errno) {
+ _cleanup_free_ char *child = NULL;
+ int k;
+
+ if (dent->d_name[0] == '.')
+ continue;
+
+ if (dent->d_type != DT_DIR)
+ continue;
+
+ child = strjoin(path, "/", dent->d_name, NULL);
+ if (!child)
+ return -ENOMEM;
+
+ k = parent_add_child(enumerator, child);
+ if (k < 0)
+ r = k;
+
+ if (maxdepth > 0)
+ parent_crawl_children(enumerator, child, maxdepth - 1);
+ else
+ log_debug("device-enumerate: max depth reached, %s: ignoring devices", child);
+ }
+
+ return r;
+}
+
+static int enumerator_scan_devices_children(sd_device_enumerator *enumerator) {
+ const char *path;
+ int r = 0, k;
+
+ r = sd_device_get_syspath(enumerator->match_parent, &path);
+ if (r < 0)
+ return r;
+
+ k = parent_add_child(enumerator, path);
+ if (k < 0)
+ r = k;
+
+ k = parent_crawl_children(enumerator, path, DEVICE_ENUMERATE_MAX_DEPTH);
+ if (k < 0)
+ r = k;
+
+ return r;
+}
+
+static int enumerator_scan_devices_all(sd_device_enumerator *enumerator) {
+ int r = 0;
+
+ log_debug("device-enumerator: scan all dirs");
+
+ if (access("/sys/subsystem", F_OK) >= 0) {
+ /* we have /subsystem/, forget all the old stuff */
+ r = enumerator_scan_dir(enumerator, "subsystem", "devices", NULL);
+ if (r < 0)
+ return log_debug_errno(r, "device-enumerator: failed to scan /sys/subsystem: %m");
+ } else {
+ int k;
+
+ k = enumerator_scan_dir(enumerator, "bus", "devices", NULL);
+ if (k < 0) {
+ log_debug_errno(k, "device-enumerator: failed to scan /sys/bus: %m");
+ r = k;
+ }
+
+ k = enumerator_scan_dir(enumerator, "class", NULL, NULL);
+ if (k < 0) {
+ log_debug_errno(k, "device-enumerator: failed to scan /sys/class: %m");
+ r = k;
+ }
+ }
+
+ return r;
+}
+
+int device_enumerator_scan_devices(sd_device_enumerator *enumerator) {
+ sd_device *device;
+ int r;
+
+ assert(enumerator);
+
+ if (enumerator->scan_uptodate &&
+ enumerator->type == DEVICE_ENUMERATION_TYPE_DEVICES)
+ return 0;
+
+ while ((device = prioq_pop(enumerator->devices)))
+ sd_device_unref(device);
+
+ if (!set_isempty(enumerator->match_tag)) {
+ r = enumerator_scan_devices_tags(enumerator);
+ if (r < 0)
+ return r;
+ } else if (enumerator->match_parent) {
+ r = enumerator_scan_devices_children(enumerator);
+ if (r < 0)
+ return r;
+ } else {
+ r = enumerator_scan_devices_all(enumerator);
+ if (r < 0)
+ return r;
+ }
+
+ enumerator->scan_uptodate = true;
+
+ return 0;
+}
+
+_public_ sd_device *sd_device_enumerator_get_device_first(sd_device_enumerator *enumerator) {
+ int r;
+
+ assert_return(enumerator, NULL);
+
+ r = device_enumerator_scan_devices(enumerator);
+ if (r < 0)
+ return NULL;
+
+ enumerator->type = DEVICE_ENUMERATION_TYPE_DEVICES;
+
+ return prioq_peek(enumerator->devices);
+}
+
+_public_ sd_device *sd_device_enumerator_get_device_next(sd_device_enumerator *enumerator) {
+ assert_return(enumerator, NULL);
+
+ if (!enumerator->scan_uptodate ||
+ enumerator->type != DEVICE_ENUMERATION_TYPE_DEVICES)
+ return NULL;
+
+ sd_device_unref(prioq_pop(enumerator->devices));
+
+ return prioq_peek(enumerator->devices);
+}
+
+int device_enumerator_scan_subsystems(sd_device_enumerator *enumerator) {
+ sd_device *device;
+ const char *subsysdir;
+ int r = 0, k;
+
+ assert(enumerator);
+
+ if (enumerator->scan_uptodate &&
+ enumerator->type == DEVICE_ENUMERATION_TYPE_SUBSYSTEMS)
+ return 0;
+
+ while ((device = prioq_pop(enumerator->devices)))
+ sd_device_unref(device);
+
+ /* modules */
+ if (match_subsystem(enumerator, "module")) {
+ k = enumerator_scan_dir_and_add_devices(enumerator, "module", NULL, NULL);
+ if (k < 0) {
+ log_debug_errno(k, "device-enumerator: failed to scan modules: %m");
+ r = k;
+ }
+ }
+
+ if (access("/sys/subsystem", F_OK) >= 0)
+ subsysdir = "subsystem";
+ else
+ subsysdir = "bus";
+
+ /* subsystems (only buses support coldplug) */
+ if (match_subsystem(enumerator, "subsystem")) {
+ k = enumerator_scan_dir_and_add_devices(enumerator, subsysdir, NULL, NULL);
+ if (k < 0) {
+ log_debug_errno(k, "device-enumerator: failed to scan subsystems: %m");
+ r = k;
+ }
+ }
+
+ /* subsystem drivers */
+ if (match_subsystem(enumerator, "drivers")) {
+ k = enumerator_scan_dir(enumerator, subsysdir, "drivers", "drivers");
+ if (k < 0) {
+ log_debug_errno(k, "device-enumerator: failed to scan drivers: %m");
+ r = k;
+ }
+ }
+
+ enumerator->scan_uptodate = true;
+
+ return r;
+}
+
+_public_ sd_device *sd_device_enumerator_get_subsystem_first(sd_device_enumerator *enumerator) {
+ int r;
+
+ assert_return(enumerator, NULL);
+
+ r = device_enumerator_scan_subsystems(enumerator);
+ if (r < 0)
+ return NULL;
+
+ enumerator->type = DEVICE_ENUMERATION_TYPE_SUBSYSTEMS;
+
+ return prioq_peek(enumerator->devices);
+}
+
+_public_ sd_device *sd_device_enumerator_get_subsystem_next(sd_device_enumerator *enumerator) {
+ assert_return(enumerator, NULL);
+
+ if (enumerator->scan_uptodate ||
+ enumerator->type != DEVICE_ENUMERATION_TYPE_SUBSYSTEMS)
+ return NULL;
+
+ sd_device_unref(prioq_pop(enumerator->devices));
+
+ return prioq_peek(enumerator->devices);
+}
+
+sd_device *device_enumerator_get_first(sd_device_enumerator *enumerator) {
+ assert_return(enumerator, NULL);
+
+ return prioq_peek(enumerator->devices);
+}
+
+sd_device *device_enumerator_get_next(sd_device_enumerator *enumerator) {
+ assert_return(enumerator, NULL);
+
+ sd_device_unref(prioq_pop(enumerator->devices));
+
+ return prioq_peek(enumerator->devices);
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-device/device-internal.h b/src/libsystemd/libsystemd-internal/sd-device/device-internal.h
new file mode 100644
index 0000000000..ab222e27de
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-device/device-internal.h
@@ -0,0 +1,126 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2008-2012 Kay Sievers <kay@vrfy.org>
+ Copyright 2014 Tom Gundersen <teg@jklm.no>
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "hashmap.h"
+#include "set.h"
+
+struct sd_device {
+ uint64_t n_ref;
+
+ sd_device *parent;
+ bool parent_set; /* no need to try to reload parent */
+
+ OrderedHashmap *properties;
+ Iterator properties_iterator;
+ uint64_t properties_generation; /* changes whenever the properties are changed */
+ uint64_t properties_iterator_generation; /* generation when iteration was started */
+
+ /* the subset of the properties that should be written to the db*/
+ OrderedHashmap *properties_db;
+
+ Hashmap *sysattr_values; /* cached sysattr values */
+
+ Set *sysattrs; /* names of sysattrs */
+ Iterator sysattrs_iterator;
+ bool sysattrs_read; /* don't try to re-read sysattrs once read */
+
+ Set *tags;
+ Iterator tags_iterator;
+ uint64_t tags_generation; /* changes whenever the tags are changed */
+ uint64_t tags_iterator_generation; /* generation when iteration was started */
+ bool property_tags_outdated; /* need to update TAGS= property */
+
+ Set *devlinks;
+ Iterator devlinks_iterator;
+ uint64_t devlinks_generation; /* changes whenever the devlinks are changed */
+ uint64_t devlinks_iterator_generation; /* generation when iteration was started */
+ bool property_devlinks_outdated; /* need to update DEVLINKS= property */
+ int devlink_priority;
+
+ char **properties_strv; /* the properties hashmap as a strv */
+ uint8_t *properties_nulstr; /* the same as a nulstr */
+ size_t properties_nulstr_len;
+ bool properties_buf_outdated; /* need to reread hashmap */
+
+ int watch_handle;
+
+ char *syspath;
+ const char *devpath;
+ const char *sysnum;
+ char *sysname;
+ bool sysname_set; /* don't reread sysname */
+
+ char *devtype;
+ int ifindex;
+ char *devname;
+ dev_t devnum;
+
+ char *subsystem;
+ bool subsystem_set; /* don't reread subsystem */
+ char *driver;
+ bool driver_set; /* don't reread driver */
+
+ char *id_filename;
+
+ bool is_initialized;
+ uint64_t usec_initialized;
+
+ mode_t devmode;
+ uid_t devuid;
+ gid_t devgid;
+
+ bool uevent_loaded; /* don't reread uevent */
+ bool db_loaded; /* don't reread db */
+
+ bool sealed; /* don't read more information from uevent/db */
+ bool db_persist; /* don't clean up the db when switching from initrd to real root */
+};
+
+typedef enum DeviceAction {
+ DEVICE_ACTION_ADD,
+ DEVICE_ACTION_REMOVE,
+ DEVICE_ACTION_CHANGE,
+ DEVICE_ACTION_MOVE,
+ DEVICE_ACTION_ONLINE,
+ DEVICE_ACTION_OFFLINE,
+ _DEVICE_ACTION_MAX,
+ _DEVICE_ACTION_INVALID = -1,
+} DeviceAction;
+
+int device_new_aux(sd_device **ret);
+int device_add_property_aux(sd_device *device, const char *key, const char *value, bool db);
+int device_add_property_internal(sd_device *device, const char *key, const char *value);
+int device_read_uevent_file(sd_device *device);
+int device_read_db_aux(sd_device *device, bool force);
+
+int device_set_syspath(sd_device *device, const char *_syspath, bool verify);
+int device_set_ifindex(sd_device *device, const char *ifindex);
+int device_set_devmode(sd_device *device, const char *devmode);
+int device_set_devname(sd_device *device, const char *_devname);
+int device_set_devtype(sd_device *device, const char *_devtype);
+int device_set_devnum(sd_device *device, const char *major, const char *minor);
+int device_set_subsystem(sd_device *device, const char *_subsystem);
+int device_set_driver(sd_device *device, const char *_driver);
+int device_set_usec_initialized(sd_device *device, const char *initialized);
+
+DeviceAction device_action_from_string(const char *s) _pure_;
+const char *device_action_to_string(DeviceAction a) _const_;
diff --git a/src/libsystemd/libsystemd-internal/sd-device/device-private.c b/src/libsystemd/libsystemd-internal/sd-device/device-private.c
new file mode 100644
index 0000000000..51cabcb048
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-device/device-private.c
@@ -0,0 +1,1119 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2008-2012 Kay Sievers <kay@vrfy.org>
+ Copyright 2014 Tom Gundersen <teg@jklm.no>
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <ctype.h>
+#include <net/if.h>
+#include <sys/types.h>
+
+#include <systemd/sd-device.h>
+
+#include "alloc-util.h"
+#include "device-internal.h"
+#include "device-private.h"
+#include "device-util.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "fs-util.h"
+#include "hashmap.h"
+#include "macro.h"
+#include "mkdir.h"
+#include "parse-util.h"
+#include "path-util.h"
+#include "refcnt.h"
+#include "set.h"
+#include "string-table.h"
+#include "string-util.h"
+#include "strv.h"
+#include "strxcpyx.h"
+#include "user-util.h"
+#include "util.h"
+
+int device_add_property(sd_device *device, const char *key, const char *value) {
+ int r;
+
+ assert(device);
+ assert(key);
+
+ r = device_add_property_aux(device, key, value, false);
+ if (r < 0)
+ return r;
+
+ if (key[0] != '.') {
+ r = device_add_property_aux(device, key, value, true);
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
+static int device_add_property_internal_from_string(sd_device *device, const char *str) {
+ _cleanup_free_ char *key = NULL;
+ char *value;
+
+ assert(device);
+ assert(str);
+
+ key = strdup(str);
+ if (!key)
+ return -ENOMEM;
+
+ value = strchr(key, '=');
+ if (!value)
+ return -EINVAL;
+
+ *value = '\0';
+
+ if (isempty(++value))
+ value = NULL;
+
+ return device_add_property_internal(device, key, value);
+}
+
+static int handle_db_line(sd_device *device, char key, const char *value) {
+ char *path;
+ int r;
+
+ assert(device);
+ assert(value);
+
+ switch (key) {
+ case 'S':
+ path = strjoina("/dev/", value);
+ r = device_add_devlink(device, path);
+ if (r < 0)
+ return r;
+
+ break;
+ case 'L':
+ r = safe_atoi(value, &device->devlink_priority);
+ if (r < 0)
+ return r;
+
+ break;
+ case 'E':
+ r = device_add_property_internal_from_string(device, value);
+ if (r < 0)
+ return r;
+
+ break;
+ case 'G':
+ r = device_add_tag(device, value);
+ if (r < 0)
+ return r;
+
+ break;
+ case 'W':
+ r = safe_atoi(value, &device->watch_handle);
+ if (r < 0)
+ return r;
+
+ break;
+ case 'I':
+ r = device_set_usec_initialized(device, value);
+ if (r < 0)
+ return r;
+
+ break;
+ default:
+ log_debug("device db: unknown key '%c'", key);
+ }
+
+ return 0;
+}
+
+void device_set_devlink_priority(sd_device *device, int priority) {
+ assert(device);
+
+ device->devlink_priority = priority;
+}
+
+void device_set_is_initialized(sd_device *device) {
+ assert(device);
+
+ device->is_initialized = true;
+}
+
+int device_ensure_usec_initialized(sd_device *device, sd_device *device_old) {
+ char num[DECIMAL_STR_MAX(usec_t)];
+ usec_t usec_initialized;
+ int r;
+
+ assert(device);
+
+ if (device_old && device_old->usec_initialized > 0)
+ usec_initialized = device_old->usec_initialized;
+ else
+ usec_initialized = now(CLOCK_MONOTONIC);
+
+ r = snprintf(num, sizeof(num), USEC_FMT, usec_initialized);
+ if (r < 0)
+ return -errno;
+
+ r = device_set_usec_initialized(device, num);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+static int device_read_db(sd_device *device) {
+ _cleanup_free_ char *db = NULL;
+ char *path;
+ const char *id, *value;
+ char key;
+ size_t db_len;
+ unsigned i;
+ int r;
+
+ enum {
+ PRE_KEY,
+ KEY,
+ PRE_VALUE,
+ VALUE,
+ INVALID_LINE,
+ } state = PRE_KEY;
+
+ assert(device);
+
+ if (device->db_loaded || device->sealed)
+ return 0;
+
+ r = device_get_id_filename(device, &id);
+ if (r < 0)
+ return r;
+
+ path = strjoina("/run/udev/data/", id);
+
+ r = read_full_file(path, &db, &db_len);
+ if (r < 0) {
+ if (r == -ENOENT)
+ return 0;
+ else
+ return log_debug_errno(r, "sd-device: failed to read db '%s': %m", path);
+ }
+
+ /* devices with a database entry are initialized */
+ device_set_is_initialized(device);
+
+ for (i = 0; i < db_len; i++) {
+ switch (state) {
+ case PRE_KEY:
+ if (!strchr(NEWLINE, db[i])) {
+ key = db[i];
+
+ state = KEY;
+ }
+
+ break;
+ case KEY:
+ if (db[i] != ':') {
+ log_debug("sd-device: ignoring invalid db entry with key '%c'", key);
+
+ state = INVALID_LINE;
+ } else {
+ db[i] = '\0';
+
+ state = PRE_VALUE;
+ }
+
+ break;
+ case PRE_VALUE:
+ value = &db[i];
+
+ state = VALUE;
+
+ break;
+ case INVALID_LINE:
+ if (strchr(NEWLINE, db[i]))
+ state = PRE_KEY;
+
+ break;
+ case VALUE:
+ if (strchr(NEWLINE, db[i])) {
+ db[i] = '\0';
+ r = handle_db_line(device, key, value);
+ if (r < 0)
+ log_debug_errno(r, "sd-device: failed to handle db entry '%c:%s': %m", key, value);
+
+ state = PRE_KEY;
+ }
+
+ break;
+ default:
+ assert_not_reached("invalid state when parsing db");
+ }
+ }
+
+ device->db_loaded = true;
+
+ return 0;
+}
+
+uint64_t device_get_properties_generation(sd_device *device) {
+ assert(device);
+
+ return device->properties_generation;
+}
+
+uint64_t device_get_tags_generation(sd_device *device) {
+ assert(device);
+
+ return device->tags_generation;
+}
+
+uint64_t device_get_devlinks_generation(sd_device *device) {
+ assert(device);
+
+ return device->devlinks_generation;
+}
+
+int device_get_devnode_mode(sd_device *device, mode_t *mode) {
+ int r;
+
+ assert(device);
+ assert(mode);
+
+ r = device_read_db(device);
+ if (r < 0)
+ return r;
+
+ *mode = device->devmode;
+
+ return 0;
+}
+
+int device_get_devnode_uid(sd_device *device, uid_t *uid) {
+ int r;
+
+ assert(device);
+ assert(uid);
+
+ r = device_read_db(device);
+ if (r < 0)
+ return r;
+
+ *uid = device->devuid;
+
+ return 0;
+}
+
+static int device_set_devuid(sd_device *device, const char *uid) {
+ unsigned u;
+ int r;
+
+ assert(device);
+ assert(uid);
+
+ r = safe_atou(uid, &u);
+ if (r < 0)
+ return r;
+
+ r = device_add_property_internal(device, "DEVUID", uid);
+ if (r < 0)
+ return r;
+
+ device->devuid = u;
+
+ return 0;
+}
+
+int device_get_devnode_gid(sd_device *device, gid_t *gid) {
+ int r;
+
+ assert(device);
+ assert(gid);
+
+ r = device_read_db(device);
+ if (r < 0)
+ return r;
+
+ *gid = device->devgid;
+
+ return 0;
+}
+
+static int device_set_devgid(sd_device *device, const char *gid) {
+ unsigned g;
+ int r;
+
+ assert(device);
+ assert(gid);
+
+ r = safe_atou(gid, &g);
+ if (r < 0)
+ return r;
+
+ r = device_add_property_internal(device, "DEVGID", gid);
+ if (r < 0)
+ return r;
+
+ device->devgid = g;
+
+ return 0;
+}
+
+static int device_amend(sd_device *device, const char *key, const char *value) {
+ int r;
+
+ assert(device);
+ assert(key);
+ assert(value);
+
+ if (streq(key, "DEVPATH")) {
+ char *path;
+
+ path = strjoina("/sys", value);
+
+ /* the caller must verify or trust this data (e.g., if it comes from the kernel) */
+ r = device_set_syspath(device, path, false);
+ if (r < 0)
+ return log_debug_errno(r, "sd-device: could not set syspath to '%s': %m", path);
+ } else if (streq(key, "SUBSYSTEM")) {
+ r = device_set_subsystem(device, value);
+ if (r < 0)
+ return log_debug_errno(r, "sd-device: could not set subsystem to '%s': %m", value);
+ } else if (streq(key, "DEVTYPE")) {
+ r = device_set_devtype(device, value);
+ if (r < 0)
+ return log_debug_errno(r, "sd-device: could not set devtype to '%s': %m", value);
+ } else if (streq(key, "DEVNAME")) {
+ r = device_set_devname(device, value);
+ if (r < 0)
+ return log_debug_errno(r, "sd-device: could not set devname to '%s': %m", value);
+ } else if (streq(key, "USEC_INITIALIZED")) {
+ r = device_set_usec_initialized(device, value);
+ if (r < 0)
+ return log_debug_errno(r, "sd-device: could not set usec-initialized to '%s': %m", value);
+ } else if (streq(key, "DRIVER")) {
+ r = device_set_driver(device, value);
+ if (r < 0)
+ return log_debug_errno(r, "sd-device: could not set driver to '%s': %m", value);
+ } else if (streq(key, "IFINDEX")) {
+ r = device_set_ifindex(device, value);
+ if (r < 0)
+ return log_debug_errno(r, "sd-device: could not set ifindex to '%s': %m", value);
+ } else if (streq(key, "DEVMODE")) {
+ r = device_set_devmode(device, value);
+ if (r < 0)
+ return log_debug_errno(r, "sd-device: could not set devmode to '%s': %m", value);
+ } else if (streq(key, "DEVUID")) {
+ r = device_set_devuid(device, value);
+ if (r < 0)
+ return log_debug_errno(r, "sd-device: could not set devuid to '%s': %m", value);
+ } else if (streq(key, "DEVGID")) {
+ r = device_set_devgid(device, value);
+ if (r < 0)
+ return log_debug_errno(r, "sd-device: could not set devgid to '%s': %m", value);
+ } else if (streq(key, "DEVLINKS")) {
+ const char *word, *state;
+ size_t l;
+
+ FOREACH_WORD(word, l, value, state) {
+ char devlink[l + 1];
+
+ strncpy(devlink, word, l);
+ devlink[l] = '\0';
+
+ r = device_add_devlink(device, devlink);
+ if (r < 0)
+ return log_debug_errno(r, "sd-device: could not add devlink '%s': %m", devlink);
+ }
+ } else if (streq(key, "TAGS")) {
+ const char *word, *state;
+ size_t l;
+
+ FOREACH_WORD_SEPARATOR(word, l, value, ":", state) {
+ char tag[l + 1];
+
+ (void)strncpy(tag, word, l);
+ tag[l] = '\0';
+
+ r = device_add_tag(device, tag);
+ if (r < 0)
+ return log_debug_errno(r, "sd-device: could not add tag '%s': %m", tag);
+ }
+ } else {
+ r = device_add_property_internal(device, key, value);
+ if (r < 0)
+ return log_debug_errno(r, "sd-device: could not add property '%s=%s': %m", key, value);
+ }
+
+ return 0;
+}
+
+static const char* const device_action_table[_DEVICE_ACTION_MAX] = {
+ [DEVICE_ACTION_ADD] = "add",
+ [DEVICE_ACTION_REMOVE] = "remove",
+ [DEVICE_ACTION_CHANGE] = "change",
+ [DEVICE_ACTION_MOVE] = "move",
+ [DEVICE_ACTION_ONLINE] = "online",
+ [DEVICE_ACTION_OFFLINE] = "offline",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(device_action, DeviceAction);
+
+static int device_append(sd_device *device, char *key, const char **_major, const char **_minor, uint64_t *_seqnum,
+ DeviceAction *_action) {
+ DeviceAction action = _DEVICE_ACTION_INVALID;
+ uint64_t seqnum = 0;
+ const char *major = NULL, *minor = NULL;
+ char *value;
+ int r;
+
+ assert(device);
+ assert(key);
+ assert(_major);
+ assert(_minor);
+ assert(_seqnum);
+ assert(_action);
+
+ value = strchr(key, '=');
+ if (!value) {
+ log_debug("sd-device: not a key-value pair: '%s'", key);
+ return -EINVAL;
+ }
+
+ *value = '\0';
+
+ value++;
+
+ if (streq(key, "MAJOR"))
+ major = value;
+ else if (streq(key, "MINOR"))
+ minor = value;
+ else {
+ if (streq(key, "ACTION")) {
+ action = device_action_from_string(value);
+ if (action == _DEVICE_ACTION_INVALID)
+ return -EINVAL;
+ } else if (streq(key, "SEQNUM")) {
+ r = safe_atou64(value, &seqnum);
+ if (r < 0)
+ return r;
+ else if (seqnum == 0)
+ /* kernel only sends seqnum > 0 */
+ return -EINVAL;
+ }
+
+ r = device_amend(device, key, value);
+ if (r < 0)
+ return r;
+ }
+
+ if (major != 0)
+ *_major = major;
+
+ if (minor != 0)
+ *_minor = minor;
+
+ if (action != _DEVICE_ACTION_INVALID)
+ *_action = action;
+
+ if (seqnum > 0)
+ *_seqnum = seqnum;
+
+ return 0;
+}
+
+void device_seal(sd_device *device) {
+ assert(device);
+
+ device->sealed = true;
+}
+
+static int device_verify(sd_device *device, DeviceAction action, uint64_t seqnum) {
+ assert(device);
+
+ if (!device->devpath || !device->subsystem || action == _DEVICE_ACTION_INVALID || seqnum == 0) {
+ log_debug("sd-device: device created from strv lacks devpath, subsystem, action or seqnum");
+ return -EINVAL;
+ }
+
+ device->sealed = true;
+
+ return 0;
+}
+
+int device_new_from_strv(sd_device **ret, char **strv) {
+ _cleanup_(sd_device_unrefp) sd_device *device = NULL;
+ char **key;
+ const char *major = NULL, *minor = NULL;
+ DeviceAction action = _DEVICE_ACTION_INVALID;
+ uint64_t seqnum;
+ int r;
+
+ assert(ret);
+ assert(strv);
+
+ r = device_new_aux(&device);
+ if (r < 0)
+ return r;
+
+ STRV_FOREACH(key, strv) {
+ r = device_append(device, *key, &major, &minor, &seqnum, &action);
+ if (r < 0)
+ return r;
+ }
+
+ if (major) {
+ r = device_set_devnum(device, major, minor);
+ if (r < 0)
+ return log_debug_errno(r, "sd-device: could not set devnum %s:%s: %m", major, minor);
+ }
+
+ r = device_verify(device, action, seqnum);
+ if (r < 0)
+ return r;
+
+ *ret = device;
+ device = NULL;
+
+ return 0;
+}
+
+int device_new_from_nulstr(sd_device **ret, uint8_t *nulstr, size_t len) {
+ _cleanup_(sd_device_unrefp) sd_device *device = NULL;
+ const char *major = NULL, *minor = NULL;
+ DeviceAction action = _DEVICE_ACTION_INVALID;
+ uint64_t seqnum;
+ unsigned i = 0;
+ int r;
+
+ assert(ret);
+ assert(nulstr);
+ assert(len);
+
+ r = device_new_aux(&device);
+ if (r < 0)
+ return r;
+
+ while (i < len) {
+ char *key;
+ const char *end;
+
+ key = (char*)&nulstr[i];
+ end = memchr(key, '\0', len - i);
+ if (!end) {
+ log_debug("sd-device: failed to parse nulstr");
+ return -EINVAL;
+ }
+ i += end - key + 1;
+
+ r = device_append(device, key, &major, &minor, &seqnum, &action);
+ if (r < 0)
+ return r;
+ }
+
+ if (major) {
+ r = device_set_devnum(device, major, minor);
+ if (r < 0)
+ return log_debug_errno(r, "sd-device: could not set devnum %s:%s: %m", major, minor);
+ }
+
+ r = device_verify(device, action, seqnum);
+ if (r < 0)
+ return r;
+
+ *ret = device;
+ device = NULL;
+
+ return 0;
+}
+
+static int device_update_properties_bufs(sd_device *device) {
+ const char *val, *prop;
+ _cleanup_free_ char **buf_strv = NULL;
+ _cleanup_free_ uint8_t *buf_nulstr = NULL;
+ size_t allocated_nulstr = 0;
+ size_t nulstr_len = 0, num = 0, i = 0;
+
+ assert(device);
+
+ if (!device->properties_buf_outdated)
+ return 0;
+
+ FOREACH_DEVICE_PROPERTY(device, prop, val) {
+ size_t len = 0;
+
+ len = strlen(prop) + 1 + strlen(val);
+
+ buf_nulstr = GREEDY_REALLOC0(buf_nulstr, allocated_nulstr, nulstr_len + len + 2);
+ if (!buf_nulstr)
+ return -ENOMEM;
+
+ strscpyl((char *)buf_nulstr + nulstr_len, len + 1, prop, "=", val, NULL);
+ nulstr_len += len + 1;
+ ++num;
+ }
+
+ /* build buf_strv from buf_nulstr */
+ buf_strv = new0(char *, num + 1);
+ if (!buf_strv)
+ return -ENOMEM;
+
+ NULSTR_FOREACH(val, (char*) buf_nulstr) {
+ buf_strv[i] = (char *) val;
+ assert(i < num);
+ i++;
+ }
+
+ free(device->properties_nulstr);
+ device->properties_nulstr = buf_nulstr;
+ buf_nulstr = NULL;
+ device->properties_nulstr_len = nulstr_len;
+ free(device->properties_strv);
+ device->properties_strv = buf_strv;
+ buf_strv = NULL;
+
+ device->properties_buf_outdated = false;
+
+ return 0;
+}
+
+int device_get_properties_nulstr(sd_device *device, const uint8_t **nulstr, size_t *len) {
+ int r;
+
+ assert(device);
+ assert(nulstr);
+ assert(len);
+
+ r = device_update_properties_bufs(device);
+ if (r < 0)
+ return r;
+
+ *nulstr = device->properties_nulstr;
+ *len = device->properties_nulstr_len;
+
+ return 0;
+}
+
+int device_get_properties_strv(sd_device *device, char ***strv) {
+ int r;
+
+ assert(device);
+ assert(strv);
+
+ r = device_update_properties_bufs(device);
+ if (r < 0)
+ return r;
+
+ *strv = device->properties_strv;
+
+ return 0;
+}
+
+int device_get_devlink_priority(sd_device *device, int *priority) {
+ int r;
+
+ assert(device);
+ assert(priority);
+
+ r = device_read_db(device);
+ if (r < 0)
+ return r;
+
+ *priority = device->devlink_priority;
+
+ return 0;
+}
+
+int device_get_watch_handle(sd_device *device, int *handle) {
+ int r;
+
+ assert(device);
+ assert(handle);
+
+ r = device_read_db(device);
+ if (r < 0)
+ return r;
+
+ *handle = device->watch_handle;
+
+ return 0;
+}
+
+void device_set_watch_handle(sd_device *device, int handle) {
+ assert(device);
+
+ device->watch_handle = handle;
+}
+
+int device_rename(sd_device *device, const char *name) {
+ _cleanup_free_ char *dirname = NULL;
+ char *new_syspath;
+ const char *interface;
+ int r;
+
+ assert(device);
+ assert(name);
+
+ dirname = dirname_malloc(device->syspath);
+ if (!dirname)
+ return -ENOMEM;
+
+ new_syspath = strjoina(dirname, "/", name);
+
+ /* the user must trust that the new name is correct */
+ r = device_set_syspath(device, new_syspath, false);
+ if (r < 0)
+ return r;
+
+ r = sd_device_get_property_value(device, "INTERFACE", &interface);
+ if (r >= 0) {
+ r = device_add_property_internal(device, "INTERFACE", name);
+ if (r < 0)
+ return r;
+
+ /* like DEVPATH_OLD, INTERFACE_OLD is not saved to the db, but only stays around for the current event */
+ r = device_add_property_internal(device, "INTERFACE_OLD", interface);
+ if (r < 0)
+ return r;
+ } else if (r != -ENOENT)
+ return r;
+
+ return 0;
+}
+
+int device_shallow_clone(sd_device *old_device, sd_device **new_device) {
+ _cleanup_(sd_device_unrefp) sd_device *ret = NULL;
+ int r;
+
+ assert(old_device);
+ assert(new_device);
+
+ r = device_new_aux(&ret);
+ if (r < 0)
+ return r;
+
+ r = device_set_syspath(ret, old_device->syspath, false);
+ if (r < 0)
+ return r;
+
+ r = device_set_subsystem(ret, old_device->subsystem);
+ if (r < 0)
+ return r;
+
+ ret->devnum = old_device->devnum;
+
+ *new_device = ret;
+ ret = NULL;
+
+ return 0;
+}
+
+int device_clone_with_db(sd_device *old_device, sd_device **new_device) {
+ _cleanup_(sd_device_unrefp) sd_device *ret = NULL;
+ int r;
+
+ assert(old_device);
+ assert(new_device);
+
+ r = device_shallow_clone(old_device, &ret);
+ if (r < 0)
+ return r;
+
+ r = device_read_db(ret);
+ if (r < 0)
+ return r;
+
+ ret->sealed = true;
+
+ *new_device = ret;
+ ret = NULL;
+
+ return 0;
+}
+
+int device_new_from_synthetic_event(sd_device **new_device, const char *syspath, const char *action) {
+ _cleanup_(sd_device_unrefp) sd_device *ret = NULL;
+ int r;
+
+ assert(new_device);
+ assert(syspath);
+ assert(action);
+
+ r = sd_device_new_from_syspath(&ret, syspath);
+ if (r < 0)
+ return r;
+
+ r = device_read_uevent_file(ret);
+ if (r < 0)
+ return r;
+
+ r = device_add_property_internal(ret, "ACTION", action);
+ if (r < 0)
+ return r;
+
+ *new_device = ret;
+ ret = NULL;
+
+ return 0;
+}
+
+int device_copy_properties(sd_device *device_dst, sd_device *device_src) {
+ const char *property, *value;
+ int r;
+
+ assert(device_dst);
+ assert(device_src);
+
+ FOREACH_DEVICE_PROPERTY(device_src, property, value) {
+ r = device_add_property(device_dst, property, value);
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
+void device_cleanup_tags(sd_device *device) {
+ assert(device);
+
+ set_free_free(device->tags);
+ device->tags = NULL;
+ device->property_tags_outdated = true;
+ device->tags_generation++;
+}
+
+void device_cleanup_devlinks(sd_device *device) {
+ assert(device);
+
+ set_free_free(device->devlinks);
+ device->devlinks = NULL;
+ device->property_devlinks_outdated = true;
+ device->devlinks_generation++;
+}
+
+void device_remove_tag(sd_device *device, const char *tag) {
+ assert(device);
+ assert(tag);
+
+ free(set_remove(device->tags, tag));
+ device->property_tags_outdated = true;
+ device->tags_generation++;
+}
+
+static int device_tag(sd_device *device, const char *tag, bool add) {
+ const char *id;
+ char *path;
+ int r;
+
+ assert(device);
+ assert(tag);
+
+ r = device_get_id_filename(device, &id);
+ if (r < 0)
+ return r;
+
+ path = strjoina("/run/udev/tags/", tag, "/", id);
+
+ if (add) {
+ r = touch_file(path, true, USEC_INFINITY, UID_INVALID, GID_INVALID, 0444);
+ if (r < 0)
+ return r;
+ } else {
+ r = unlink(path);
+ if (r < 0 && errno != ENOENT)
+ return -errno;
+ }
+
+ return 0;
+}
+
+int device_tag_index(sd_device *device, sd_device *device_old, bool add) {
+ const char *tag;
+ int r = 0, k;
+
+ if (add && device_old) {
+ /* delete possible left-over tags */
+ FOREACH_DEVICE_TAG(device_old, tag) {
+ if (!sd_device_has_tag(device, tag)) {
+ k = device_tag(device_old, tag, false);
+ if (r >= 0 && k < 0)
+ r = k;
+ }
+ }
+ }
+
+ FOREACH_DEVICE_TAG(device, tag) {
+ k = device_tag(device, tag, add);
+ if (r >= 0 && k < 0)
+ r = k;
+ }
+
+ return r;
+}
+
+static bool device_has_info(sd_device *device) {
+ assert(device);
+
+ if (!set_isempty(device->devlinks))
+ return true;
+
+ if (device->devlink_priority != 0)
+ return true;
+
+ if (!ordered_hashmap_isempty(device->properties_db))
+ return true;
+
+ if (!set_isempty(device->tags))
+ return true;
+
+ if (device->watch_handle >= 0)
+ return true;
+
+ return false;
+}
+
+void device_set_db_persist(sd_device *device) {
+ assert(device);
+
+ device->db_persist = true;
+}
+
+int device_update_db(sd_device *device) {
+ const char *id;
+ char *path;
+ _cleanup_fclose_ FILE *f = NULL;
+ _cleanup_free_ char *path_tmp = NULL;
+ bool has_info;
+ int r;
+
+ assert(device);
+
+ has_info = device_has_info(device);
+
+ r = device_get_id_filename(device, &id);
+ if (r < 0)
+ return r;
+
+ path = strjoina("/run/udev/data/", id);
+
+ /* do not store anything for otherwise empty devices */
+ if (!has_info && major(device->devnum) == 0 && device->ifindex == 0) {
+ r = unlink(path);
+ if (r < 0 && errno != ENOENT)
+ return -errno;
+
+ return 0;
+ }
+
+ /* write a database file */
+ r = mkdir_parents(path, 0755);
+ if (r < 0)
+ return r;
+
+ r = fopen_temporary(path, &f, &path_tmp);
+ if (r < 0)
+ return r;
+
+ /*
+ * set 'sticky' bit to indicate that we should not clean the
+ * database when we transition from initramfs to the real root
+ */
+ if (device->db_persist) {
+ r = fchmod(fileno(f), 01644);
+ if (r < 0) {
+ r = -errno;
+ goto fail;
+ }
+ } else {
+ r = fchmod(fileno(f), 0644);
+ if (r < 0) {
+ r = -errno;
+ goto fail;
+ }
+ }
+
+ if (has_info) {
+ const char *property, *value, *tag;
+ Iterator i;
+
+ if (major(device->devnum) > 0) {
+ const char *devlink;
+
+ FOREACH_DEVICE_DEVLINK(device, devlink)
+ fprintf(f, "S:%s\n", devlink + strlen("/dev/"));
+
+ if (device->devlink_priority != 0)
+ fprintf(f, "L:%i\n", device->devlink_priority);
+
+ if (device->watch_handle >= 0)
+ fprintf(f, "W:%i\n", device->watch_handle);
+ }
+
+ if (device->usec_initialized > 0)
+ fprintf(f, "I:"USEC_FMT"\n", device->usec_initialized);
+
+ ORDERED_HASHMAP_FOREACH_KEY(value, property, device->properties_db, i)
+ fprintf(f, "E:%s=%s\n", property, value);
+
+ FOREACH_DEVICE_TAG(device, tag)
+ fprintf(f, "G:%s\n", tag);
+ }
+
+ r = fflush_and_check(f);
+ if (r < 0)
+ goto fail;
+
+ r = rename(path_tmp, path);
+ if (r < 0) {
+ r = -errno;
+ goto fail;
+ }
+
+ log_debug("created %s file '%s' for '%s'", has_info ? "db" : "empty",
+ path, device->devpath);
+
+ return 0;
+
+fail:
+ (void) unlink(path);
+ (void) unlink(path_tmp);
+
+ return log_error_errno(r, "failed to create %s file '%s' for '%s'", has_info ? "db" : "empty", path, device->devpath);
+}
+
+int device_delete_db(sd_device *device) {
+ const char *id;
+ char *path;
+ int r;
+
+ assert(device);
+
+ r = device_get_id_filename(device, &id);
+ if (r < 0)
+ return r;
+
+ path = strjoina("/run/udev/data/", id);
+
+ r = unlink(path);
+ if (r < 0 && errno != ENOENT)
+ return -errno;
+
+ return 0;
+}
+
+int device_read_db_force(sd_device *device) {
+ assert(device);
+
+ return device_read_db_aux(device, true);
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-device/device-private.h b/src/libsystemd/libsystemd-internal/sd-device/device-private.h
new file mode 100644
index 0000000000..d6add2f7b2
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-device/device-private.h
@@ -0,0 +1,68 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2014 Tom Gundersen <teg@jklm.no>
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <inttypes.h>
+#include <stdbool.h>
+#include <sys/types.h>
+
+#include <systemd/sd-device.h>
+
+int device_new_from_nulstr(sd_device **ret, uint8_t *nulstr, size_t len);
+int device_new_from_strv(sd_device **ret, char **strv);
+
+int device_get_id_filename(sd_device *device, const char **ret);
+
+int device_get_devlink_priority(sd_device *device, int *priority);
+int device_get_watch_handle(sd_device *device, int *handle);
+int device_get_devnode_mode(sd_device *device, mode_t *mode);
+int device_get_devnode_uid(sd_device *device, uid_t *uid);
+int device_get_devnode_gid(sd_device *device, gid_t *gid);
+
+void device_seal(sd_device *device);
+void device_set_is_initialized(sd_device *device);
+void device_set_watch_handle(sd_device *device, int fd);
+void device_set_db_persist(sd_device *device);
+void device_set_devlink_priority(sd_device *device, int priority);
+int device_ensure_usec_initialized(sd_device *device, sd_device *device_old);
+int device_add_devlink(sd_device *device, const char *devlink);
+int device_add_property(sd_device *device, const char *property, const char *value);
+int device_add_tag(sd_device *device, const char *tag);
+void device_remove_tag(sd_device *device, const char *tag);
+void device_cleanup_tags(sd_device *device);
+void device_cleanup_devlinks(sd_device *device);
+
+uint64_t device_get_properties_generation(sd_device *device);
+uint64_t device_get_tags_generation(sd_device *device);
+uint64_t device_get_devlinks_generation(sd_device *device);
+
+int device_get_properties_nulstr(sd_device *device, const uint8_t **nulstr, size_t *len);
+int device_get_properties_strv(sd_device *device, char ***strv);
+
+int device_rename(sd_device *device, const char *name);
+int device_shallow_clone(sd_device *old_device, sd_device **new_device);
+int device_clone_with_db(sd_device *old_device, sd_device **new_device);
+int device_copy_properties(sd_device *device_dst, sd_device *device_src);
+int device_new_from_synthetic_event(sd_device **new_device, const char *syspath, const char *action);
+
+int device_tag_index(sd_device *dev, sd_device *dev_old, bool add);
+int device_update_db(sd_device *device);
+int device_delete_db(sd_device *device);
+int device_read_db_force(sd_device *device);
diff --git a/src/libsystemd/libsystemd-internal/sd-device/device-util.h b/src/libsystemd/libsystemd-internal/sd-device/device-util.h
new file mode 100644
index 0000000000..5b42e11de6
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-device/device-util.h
@@ -0,0 +1,52 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2014-2015 Tom Gundersen <teg@jklm.no>
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "util.h"
+
+#define FOREACH_DEVICE_PROPERTY(device, key, value) \
+ for (key = sd_device_get_property_first(device, &(value)); \
+ key; \
+ key = sd_device_get_property_next(device, &(value)))
+
+#define FOREACH_DEVICE_TAG(device, tag) \
+ for (tag = sd_device_get_tag_first(device); \
+ tag; \
+ tag = sd_device_get_tag_next(device))
+
+#define FOREACH_DEVICE_SYSATTR(device, attr) \
+ for (attr = sd_device_get_sysattr_first(device); \
+ attr; \
+ attr = sd_device_get_sysattr_next(device))
+
+#define FOREACH_DEVICE_DEVLINK(device, devlink) \
+ for (devlink = sd_device_get_devlink_first(device); \
+ devlink; \
+ devlink = sd_device_get_devlink_next(device))
+
+#define FOREACH_DEVICE(enumerator, device) \
+ for (device = sd_device_enumerator_get_device_first(enumerator); \
+ device; \
+ device = sd_device_enumerator_get_device_next(enumerator))
+
+#define FOREACH_SUBSYSTEM(enumerator, device) \
+ for (device = sd_device_enumerator_get_subsystem_first(enumerator); \
+ device; \
+ device = sd_device_enumerator_get_subsystem_next(enumerator))
diff --git a/src/libsystemd/libsystemd-internal/sd-device/sd-device.c b/src/libsystemd/libsystemd-internal/sd-device/sd-device.c
new file mode 100644
index 0000000000..d21a67cd4c
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-device/sd-device.c
@@ -0,0 +1,1884 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2008-2012 Kay Sievers <kay@vrfy.org>
+ Copyright 2014 Tom Gundersen <teg@jklm.no>
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <ctype.h>
+#include <net/if.h>
+#include <sys/types.h>
+
+#include <systemd/sd-device.h>
+
+#include "alloc-util.h"
+#include "device-internal.h"
+#include "device-private.h"
+#include "device-util.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "fs-util.h"
+#include "hashmap.h"
+#include "macro.h"
+#include "parse-util.h"
+#include "path-util.h"
+#include "set.h"
+#include "stat-util.h"
+#include "string-util.h"
+#include "strv.h"
+#include "strxcpyx.h"
+#include "util.h"
+
+int device_new_aux(sd_device **ret) {
+ _cleanup_(sd_device_unrefp) sd_device *device = NULL;
+
+ assert(ret);
+
+ device = new0(sd_device, 1);
+ if (!device)
+ return -ENOMEM;
+
+ device->n_ref = 1;
+ device->watch_handle = -1;
+
+ *ret = device;
+ device = NULL;
+
+ return 0;
+}
+
+_public_ sd_device *sd_device_ref(sd_device *device) {
+ if (device)
+ assert_se(++ device->n_ref >= 2);
+
+ return device;
+}
+
+_public_ sd_device *sd_device_unref(sd_device *device) {
+ if (device && -- device->n_ref == 0) {
+ sd_device_unref(device->parent);
+ free(device->syspath);
+ free(device->sysname);
+ free(device->devtype);
+ free(device->devname);
+ free(device->subsystem);
+ free(device->driver);
+ free(device->id_filename);
+ free(device->properties_strv);
+ free(device->properties_nulstr);
+
+ ordered_hashmap_free_free_free(device->properties);
+ ordered_hashmap_free_free_free(device->properties_db);
+ hashmap_free_free_free(device->sysattr_values);
+ set_free_free(device->sysattrs);
+ set_free_free(device->tags);
+ set_free_free(device->devlinks);
+
+ free(device);
+ }
+
+ return NULL;
+}
+
+int device_add_property_aux(sd_device *device, const char *_key, const char *_value, bool db) {
+ OrderedHashmap **properties;
+
+ assert(device);
+ assert(_key);
+
+ if (db)
+ properties = &device->properties_db;
+ else
+ properties = &device->properties;
+
+ if (_value) {
+ _cleanup_free_ char *key = NULL, *value = NULL, *old_key = NULL, *old_value = NULL;
+ int r;
+
+ r = ordered_hashmap_ensure_allocated(properties, &string_hash_ops);
+ if (r < 0)
+ return r;
+
+ key = strdup(_key);
+ if (!key)
+ return -ENOMEM;
+
+ value = strdup(_value);
+ if (!value)
+ return -ENOMEM;
+
+ old_value = ordered_hashmap_get2(*properties, key, (void**) &old_key);
+
+ r = ordered_hashmap_replace(*properties, key, value);
+ if (r < 0)
+ return r;
+
+ key = NULL;
+ value = NULL;
+ } else {
+ _cleanup_free_ char *key = NULL;
+ _cleanup_free_ char *value = NULL;
+
+ value = ordered_hashmap_remove2(*properties, _key, (void**) &key);
+ }
+
+ if (!db) {
+ device->properties_generation++;
+ device->properties_buf_outdated = true;
+ }
+
+ return 0;
+}
+
+int device_add_property_internal(sd_device *device, const char *key, const char *value) {
+ return device_add_property_aux(device, key, value, false);
+}
+
+int device_set_syspath(sd_device *device, const char *_syspath, bool verify) {
+ _cleanup_free_ char *syspath = NULL;
+ const char *devpath;
+ int r;
+
+ assert(device);
+ assert(_syspath);
+
+ /* must be a subdirectory of /sys */
+ if (!path_startswith(_syspath, "/sys/")) {
+ log_debug("sd-device: syspath '%s' is not a subdirectory of /sys", _syspath);
+ return -EINVAL;
+ }
+
+ if (verify) {
+ r = readlink_and_canonicalize(_syspath, &syspath);
+ if (r == -ENOENT)
+ /* the device does not exist (any more?) */
+ return -ENODEV;
+ else if (r == -EINVAL) {
+ /* not a symlink */
+ syspath = canonicalize_file_name(_syspath);
+ if (!syspath) {
+ if (errno == ENOENT)
+ /* the device does not exist (any more?) */
+ return -ENODEV;
+
+ return log_debug_errno(errno, "sd-device: could not canonicalize '%s': %m", _syspath);
+ }
+ } else if (r < 0) {
+ log_debug_errno(r, "sd-device: could not get target of '%s': %m", _syspath);
+ return r;
+ }
+
+ if (path_startswith(syspath, "/sys/devices/")) {
+ char *path;
+
+ /* all 'devices' require an 'uevent' file */
+ path = strjoina(syspath, "/uevent");
+ r = access(path, F_OK);
+ if (r < 0) {
+ if (errno == ENOENT)
+ /* this is not a valid device */
+ return -ENODEV;
+
+ log_debug("sd-device: %s does not have an uevent file: %m", syspath);
+ return -errno;
+ }
+ } else {
+ /* everything else just just needs to be a directory */
+ if (!is_dir(syspath, false))
+ return -ENODEV;
+ }
+ } else {
+ syspath = strdup(_syspath);
+ if (!syspath)
+ return -ENOMEM;
+ }
+
+ devpath = syspath + strlen("/sys");
+
+ r = device_add_property_internal(device, "DEVPATH", devpath);
+ if (r < 0)
+ return r;
+
+ free(device->syspath);
+ device->syspath = syspath;
+ syspath = NULL;
+
+ device->devpath = devpath;
+
+ return 0;
+}
+
+_public_ int sd_device_new_from_syspath(sd_device **ret, const char *syspath) {
+ _cleanup_(sd_device_unrefp) sd_device *device = NULL;
+ int r;
+
+ assert_return(ret, -EINVAL);
+ assert_return(syspath, -EINVAL);
+
+ r = device_new_aux(&device);
+ if (r < 0)
+ return r;
+
+ r = device_set_syspath(device, syspath, true);
+ if (r < 0)
+ return r;
+
+ *ret = device;
+ device = NULL;
+
+ return 0;
+}
+
+_public_ int sd_device_new_from_devnum(sd_device **ret, char type, dev_t devnum) {
+ char *syspath;
+ char id[DECIMAL_STR_MAX(unsigned) * 2 + 1];
+
+ assert_return(ret, -EINVAL);
+ assert_return(type == 'b' || type == 'c', -EINVAL);
+
+ /* use /sys/dev/{block,char}/<maj>:<min> link */
+ snprintf(id, sizeof(id), "%u:%u", major(devnum), minor(devnum));
+
+ syspath = strjoina("/sys/dev/", (type == 'b' ? "block" : "char"), "/", id);
+
+ return sd_device_new_from_syspath(ret, syspath);
+}
+
+_public_ int sd_device_new_from_subsystem_sysname(sd_device **ret, const char *subsystem, const char *sysname) {
+ char *syspath;
+
+ assert_return(ret, -EINVAL);
+ assert_return(subsystem, -EINVAL);
+ assert_return(sysname, -EINVAL);
+
+ if (streq(subsystem, "subsystem")) {
+ syspath = strjoina("/sys/subsystem/", sysname);
+ if (access(syspath, F_OK) >= 0)
+ return sd_device_new_from_syspath(ret, syspath);
+
+ syspath = strjoina("/sys/bus/", sysname);
+ if (access(syspath, F_OK) >= 0)
+ return sd_device_new_from_syspath(ret, syspath);
+
+ syspath = strjoina("/sys/class/", sysname);
+ if (access(syspath, F_OK) >= 0)
+ return sd_device_new_from_syspath(ret, syspath);
+ } else if (streq(subsystem, "module")) {
+ syspath = strjoina("/sys/module/", sysname);
+ if (access(syspath, F_OK) >= 0)
+ return sd_device_new_from_syspath(ret, syspath);
+ } else if (streq(subsystem, "drivers")) {
+ char subsys[PATH_MAX];
+ char *driver;
+
+ strscpy(subsys, sizeof(subsys), sysname);
+ driver = strchr(subsys, ':');
+ if (driver) {
+ driver[0] = '\0';
+ driver++;
+
+ syspath = strjoina("/sys/subsystem/", subsys, "/drivers/", driver);
+ if (access(syspath, F_OK) >= 0)
+ return sd_device_new_from_syspath(ret, syspath);
+
+ syspath = strjoina("/sys/bus/", subsys, "/drivers/", driver);
+ if (access(syspath, F_OK) >= 0)
+ return sd_device_new_from_syspath(ret, syspath);
+ } else
+ return -EINVAL;
+ } else {
+ char *name;
+ size_t len = 0;
+
+ /* translate sysname back to sysfs filename */
+ name = strdupa(sysname);
+ while (name[len] != '\0') {
+ if (name[len] == '/')
+ name[len] = '!';
+
+ len++;
+ }
+
+ syspath = strjoina("/sys/subsystem/", subsystem, "/devices/", name);
+ if (access(syspath, F_OK) >= 0)
+ return sd_device_new_from_syspath(ret, syspath);
+
+ syspath = strjoina("/sys/bus/", subsystem, "/devices/", name);
+ if (access(syspath, F_OK) >= 0)
+ return sd_device_new_from_syspath(ret, syspath);
+
+ syspath = strjoina("/sys/class/", subsystem, "/", name);
+ if (access(syspath, F_OK) >= 0)
+ return sd_device_new_from_syspath(ret, syspath);
+ }
+
+ return -ENODEV;
+}
+
+int device_set_devtype(sd_device *device, const char *_devtype) {
+ _cleanup_free_ char *devtype = NULL;
+ int r;
+
+ assert(device);
+ assert(_devtype);
+
+ devtype = strdup(_devtype);
+ if (!devtype)
+ return -ENOMEM;
+
+ r = device_add_property_internal(device, "DEVTYPE", devtype);
+ if (r < 0)
+ return r;
+
+ free(device->devtype);
+ device->devtype = devtype;
+ devtype = NULL;
+
+ return 0;
+}
+
+int device_set_ifindex(sd_device *device, const char *_ifindex) {
+ int ifindex, r;
+
+ assert(device);
+ assert(_ifindex);
+
+ r = parse_ifindex(_ifindex, &ifindex);
+ if (r < 0)
+ return r;
+
+ r = device_add_property_internal(device, "IFINDEX", _ifindex);
+ if (r < 0)
+ return r;
+
+ device->ifindex = ifindex;
+
+ return 0;
+}
+
+int device_set_devname(sd_device *device, const char *_devname) {
+ _cleanup_free_ char *devname = NULL;
+ int r;
+
+ assert(device);
+ assert(_devname);
+
+ if (_devname[0] != '/') {
+ r = asprintf(&devname, "/dev/%s", _devname);
+ if (r < 0)
+ return -ENOMEM;
+ } else {
+ devname = strdup(_devname);
+ if (!devname)
+ return -ENOMEM;
+ }
+
+ r = device_add_property_internal(device, "DEVNAME", devname);
+ if (r < 0)
+ return r;
+
+ free(device->devname);
+ device->devname = devname;
+ devname = NULL;
+
+ return 0;
+}
+
+int device_set_devmode(sd_device *device, const char *_devmode) {
+ unsigned devmode;
+ int r;
+
+ assert(device);
+ assert(_devmode);
+
+ r = safe_atou(_devmode, &devmode);
+ if (r < 0)
+ return r;
+
+ if (devmode > 07777)
+ return -EINVAL;
+
+ r = device_add_property_internal(device, "DEVMODE", _devmode);
+ if (r < 0)
+ return r;
+
+ device->devmode = devmode;
+
+ return 0;
+}
+
+int device_set_devnum(sd_device *device, const char *major, const char *minor) {
+ unsigned maj = 0, min = 0;
+ int r;
+
+ assert(device);
+ assert(major);
+
+ r = safe_atou(major, &maj);
+ if (r < 0)
+ return r;
+ if (!maj)
+ return 0;
+
+ if (minor) {
+ r = safe_atou(minor, &min);
+ if (r < 0)
+ return r;
+ }
+
+ r = device_add_property_internal(device, "MAJOR", major);
+ if (r < 0)
+ return r;
+
+ if (minor) {
+ r = device_add_property_internal(device, "MINOR", minor);
+ if (r < 0)
+ return r;
+ }
+
+ device->devnum = makedev(maj, min);
+
+ return 0;
+}
+
+static int handle_uevent_line(sd_device *device, const char *key, const char *value, const char **major, const char **minor) {
+ int r;
+
+ assert(device);
+ assert(key);
+ assert(value);
+ assert(major);
+ assert(minor);
+
+ if (streq(key, "DEVTYPE")) {
+ r = device_set_devtype(device, value);
+ if (r < 0)
+ return r;
+ } else if (streq(key, "IFINDEX")) {
+ r = device_set_ifindex(device, value);
+ if (r < 0)
+ return r;
+ } else if (streq(key, "DEVNAME")) {
+ r = device_set_devname(device, value);
+ if (r < 0)
+ return r;
+ } else if (streq(key, "DEVMODE")) {
+ r = device_set_devmode(device, value);
+ if (r < 0)
+ return r;
+ } else if (streq(key, "MAJOR"))
+ *major = value;
+ else if (streq(key, "MINOR"))
+ *minor = value;
+ else {
+ r = device_add_property_internal(device, key, value);
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
+int device_read_uevent_file(sd_device *device) {
+ _cleanup_free_ char *uevent = NULL;
+ const char *syspath, *key = NULL, *value = NULL, *major = NULL, *minor = NULL;
+ char *path;
+ size_t uevent_len;
+ unsigned i;
+ int r;
+
+ enum {
+ PRE_KEY,
+ KEY,
+ PRE_VALUE,
+ VALUE,
+ INVALID_LINE,
+ } state = PRE_KEY;
+
+ assert(device);
+
+ if (device->uevent_loaded || device->sealed)
+ return 0;
+
+ device->uevent_loaded = true;
+
+ r = sd_device_get_syspath(device, &syspath);
+ if (r < 0)
+ return r;
+
+ path = strjoina(syspath, "/uevent");
+
+ r = read_full_file(path, &uevent, &uevent_len);
+ if (r == -EACCES)
+ /* empty uevent files may be write-only */
+ return 0;
+ else if (r == -ENOENT)
+ /* some devices may not have uevent files, see set_syspath() */
+ return 0;
+ else if (r < 0) {
+ log_debug_errno(r, "sd-device: failed to read uevent file '%s': %m", path);
+ return r;
+ }
+
+ for (i = 0; i < uevent_len; i++) {
+ switch (state) {
+ case PRE_KEY:
+ if (!strchr(NEWLINE, uevent[i])) {
+ key = &uevent[i];
+
+ state = KEY;
+ }
+
+ break;
+ case KEY:
+ if (uevent[i] == '=') {
+ uevent[i] = '\0';
+
+ state = PRE_VALUE;
+ } else if (strchr(NEWLINE, uevent[i])) {
+ uevent[i] = '\0';
+ log_debug("sd-device: ignoring invalid uevent line '%s'", key);
+
+ state = PRE_KEY;
+ }
+
+ break;
+ case PRE_VALUE:
+ value = &uevent[i];
+
+ state = VALUE;
+
+ break;
+ case VALUE:
+ if (strchr(NEWLINE, uevent[i])) {
+ uevent[i] = '\0';
+
+ r = handle_uevent_line(device, key, value, &major, &minor);
+ if (r < 0)
+ log_debug_errno(r, "sd-device: failed to handle uevent entry '%s=%s': %m", key, value);
+
+ state = PRE_KEY;
+ }
+
+ break;
+ default:
+ assert_not_reached("invalid state when parsing uevent file");
+ }
+ }
+
+ if (major) {
+ r = device_set_devnum(device, major, minor);
+ if (r < 0)
+ log_debug_errno(r, "sd-device: could not set 'MAJOR=%s' or 'MINOR=%s' from '%s': %m", major, minor, path);
+ }
+
+ return 0;
+}
+
+_public_ int sd_device_get_ifindex(sd_device *device, int *ifindex) {
+ int r;
+
+ assert_return(device, -EINVAL);
+ assert_return(ifindex, -EINVAL);
+
+ r = device_read_uevent_file(device);
+ if (r < 0)
+ return r;
+
+ *ifindex = device->ifindex;
+
+ return 0;
+}
+
+_public_ int sd_device_new_from_device_id(sd_device **ret, const char *id) {
+ int r;
+
+ assert_return(ret, -EINVAL);
+ assert_return(id, -EINVAL);
+
+ switch (id[0]) {
+ case 'b':
+ case 'c':
+ {
+ char type;
+ int maj, min;
+
+ r = sscanf(id, "%c%i:%i", &type, &maj, &min);
+ if (r != 3)
+ return -EINVAL;
+
+ return sd_device_new_from_devnum(ret, type, makedev(maj, min));
+ }
+ case 'n':
+ {
+ _cleanup_(sd_device_unrefp) sd_device *device = NULL;
+ _cleanup_close_ int sk = -1;
+ struct ifreq ifr = {};
+ int ifindex;
+
+ r = parse_ifindex(&id[1], &ifr.ifr_ifindex);
+ if (r < 0)
+ return r;
+
+ sk = socket(PF_INET, SOCK_DGRAM, 0);
+ if (sk < 0)
+ return -errno;
+
+ r = ioctl(sk, SIOCGIFNAME, &ifr);
+ if (r < 0)
+ return -errno;
+
+ r = sd_device_new_from_subsystem_sysname(&device, "net", ifr.ifr_name);
+ if (r < 0)
+ return r;
+
+ r = sd_device_get_ifindex(device, &ifindex);
+ if (r < 0)
+ return r;
+
+ /* this is racey, so we might end up with the wrong device */
+ if (ifr.ifr_ifindex != ifindex)
+ return -ENODEV;
+
+ *ret = device;
+ device = NULL;
+
+ return 0;
+ }
+ case '+':
+ {
+ char subsys[PATH_MAX];
+ char *sysname;
+
+ (void)strscpy(subsys, sizeof(subsys), id + 1);
+ sysname = strchr(subsys, ':');
+ if (!sysname)
+ return -EINVAL;
+
+ sysname[0] = '\0';
+ sysname++;
+
+ return sd_device_new_from_subsystem_sysname(ret, subsys, sysname);
+ }
+ default:
+ return -EINVAL;
+ }
+}
+
+_public_ int sd_device_get_syspath(sd_device *device, const char **ret) {
+ assert_return(device, -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ assert(path_startswith(device->syspath, "/sys/"));
+
+ *ret = device->syspath;
+
+ return 0;
+}
+
+static int device_new_from_child(sd_device **ret, sd_device *child) {
+ _cleanup_free_ char *path = NULL;
+ const char *subdir, *syspath;
+ int r;
+
+ assert(ret);
+ assert(child);
+
+ r = sd_device_get_syspath(child, &syspath);
+ if (r < 0)
+ return r;
+
+ path = strdup(syspath);
+ if (!path)
+ return -ENOMEM;
+ subdir = path + strlen("/sys");
+
+ for (;;) {
+ char *pos;
+
+ pos = strrchr(subdir, '/');
+ if (!pos || pos < subdir + 2)
+ break;
+
+ *pos = '\0';
+
+ r = sd_device_new_from_syspath(ret, path);
+ if (r < 0)
+ continue;
+
+ return 0;
+ }
+
+ return -ENODEV;
+}
+
+_public_ int sd_device_get_parent(sd_device *child, sd_device **ret) {
+
+ assert_return(ret, -EINVAL);
+ assert_return(child, -EINVAL);
+
+ if (!child->parent_set) {
+ child->parent_set = true;
+
+ (void)device_new_from_child(&child->parent, child);
+ }
+
+ if (!child->parent)
+ return -ENOENT;
+
+ *ret = child->parent;
+
+ return 0;
+}
+
+int device_set_subsystem(sd_device *device, const char *_subsystem) {
+ _cleanup_free_ char *subsystem = NULL;
+ int r;
+
+ assert(device);
+ assert(_subsystem);
+
+ subsystem = strdup(_subsystem);
+ if (!subsystem)
+ return -ENOMEM;
+
+ r = device_add_property_internal(device, "SUBSYSTEM", subsystem);
+ if (r < 0)
+ return r;
+
+ free(device->subsystem);
+ device->subsystem = subsystem;
+ subsystem = NULL;
+
+ device->subsystem_set = true;
+
+ return 0;
+}
+
+_public_ int sd_device_get_subsystem(sd_device *device, const char **ret) {
+ assert_return(ret, -EINVAL);
+ assert_return(device, -EINVAL);
+
+ if (!device->subsystem_set) {
+ _cleanup_free_ char *subsystem = NULL;
+ const char *syspath;
+ char *path;
+ int r;
+
+ /* read 'subsystem' link */
+ r = sd_device_get_syspath(device, &syspath);
+ if (r < 0)
+ return r;
+
+ path = strjoina(syspath, "/subsystem");
+ r = readlink_value(path, &subsystem);
+ if (r >= 0)
+ r = device_set_subsystem(device, subsystem);
+ /* use implicit names */
+ else if (path_startswith(device->devpath, "/module/"))
+ r = device_set_subsystem(device, "module");
+ else if (strstr(device->devpath, "/drivers/"))
+ r = device_set_subsystem(device, "drivers");
+ else if (path_startswith(device->devpath, "/subsystem/") ||
+ path_startswith(device->devpath, "/class/") ||
+ path_startswith(device->devpath, "/bus/"))
+ r = device_set_subsystem(device, "subsystem");
+ if (r < 0 && r != -ENOENT)
+ return log_debug_errno(r, "sd-device: could not set subsystem for %s: %m", device->devpath);
+
+ device->subsystem_set = true;
+ }
+
+ if (!device->subsystem)
+ return -ENOENT;
+
+ *ret = device->subsystem;
+
+ return 0;
+}
+
+_public_ int sd_device_get_devtype(sd_device *device, const char **devtype) {
+ int r;
+
+ assert(devtype);
+ assert(device);
+
+ r = device_read_uevent_file(device);
+ if (r < 0)
+ return r;
+
+ *devtype = device->devtype;
+
+ return 0;
+}
+
+_public_ int sd_device_get_parent_with_subsystem_devtype(sd_device *child, const char *subsystem, const char *devtype, sd_device **ret) {
+ sd_device *parent = NULL;
+ int r;
+
+ assert_return(child, -EINVAL);
+ assert_return(subsystem, -EINVAL);
+
+ r = sd_device_get_parent(child, &parent);
+ while (r >= 0) {
+ const char *parent_subsystem = NULL;
+ const char *parent_devtype = NULL;
+
+ (void)sd_device_get_subsystem(parent, &parent_subsystem);
+ if (streq_ptr(parent_subsystem, subsystem)) {
+ if (!devtype)
+ break;
+
+ (void)sd_device_get_devtype(parent, &parent_devtype);
+ if (streq_ptr(parent_devtype, devtype))
+ break;
+ }
+ r = sd_device_get_parent(parent, &parent);
+ }
+
+ if (r < 0)
+ return r;
+
+ *ret = parent;
+
+ return 0;
+}
+
+_public_ int sd_device_get_devnum(sd_device *device, dev_t *devnum) {
+ int r;
+
+ assert_return(device, -EINVAL);
+ assert_return(devnum, -EINVAL);
+
+ r = device_read_uevent_file(device);
+ if (r < 0)
+ return r;
+
+ *devnum = device->devnum;
+
+ return 0;
+}
+
+int device_set_driver(sd_device *device, const char *_driver) {
+ _cleanup_free_ char *driver = NULL;
+ int r;
+
+ assert(device);
+ assert(_driver);
+
+ driver = strdup(_driver);
+ if (!driver)
+ return -ENOMEM;
+
+ r = device_add_property_internal(device, "DRIVER", driver);
+ if (r < 0)
+ return r;
+
+ free(device->driver);
+ device->driver = driver;
+ driver = NULL;
+
+ device->driver_set = true;
+
+ return 0;
+}
+
+_public_ int sd_device_get_driver(sd_device *device, const char **ret) {
+ assert_return(device, -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ if (!device->driver_set) {
+ _cleanup_free_ char *driver = NULL;
+ const char *syspath;
+ char *path;
+ int r;
+
+ r = sd_device_get_syspath(device, &syspath);
+ if (r < 0)
+ return r;
+
+ path = strjoina(syspath, "/driver");
+ r = readlink_value(path, &driver);
+ if (r >= 0) {
+ r = device_set_driver(device, driver);
+ if (r < 0)
+ return log_debug_errno(r, "sd-device: could not set driver for %s: %m", device->devpath);
+ } else if (r == -ENOENT)
+ device->driver_set = true;
+ else
+ return log_debug_errno(r, "sd-device: could not set driver for %s: %m", device->devpath);
+ }
+
+ if (!device->driver)
+ return -ENOENT;
+
+ *ret = device->driver;
+
+ return 0;
+}
+
+_public_ int sd_device_get_devpath(sd_device *device, const char **devpath) {
+ assert_return(device, -EINVAL);
+ assert_return(devpath, -EINVAL);
+
+ assert(device->devpath);
+ assert(device->devpath[0] == '/');
+
+ *devpath = device->devpath;
+
+ return 0;
+}
+
+_public_ int sd_device_get_devname(sd_device *device, const char **devname) {
+ int r;
+
+ assert_return(device, -EINVAL);
+ assert_return(devname, -EINVAL);
+
+ r = device_read_uevent_file(device);
+ if (r < 0)
+ return r;
+
+ if (!device->devname)
+ return -ENOENT;
+
+ assert(path_startswith(device->devname, "/dev/"));
+
+ *devname = device->devname;
+
+ return 0;
+}
+
+static int device_set_sysname(sd_device *device) {
+ _cleanup_free_ char *sysname = NULL;
+ const char *sysnum = NULL;
+ const char *pos;
+ size_t len = 0;
+
+ pos = strrchr(device->devpath, '/');
+ if (!pos)
+ return -EINVAL;
+ pos++;
+
+ /* devpath is not a root directory */
+ if (*pos == '\0' || pos <= device->devpath)
+ return -EINVAL;
+
+ sysname = strdup(pos);
+ if (!sysname)
+ return -ENOMEM;
+
+ /* some devices have '!' in their name, change that to '/' */
+ while (sysname[len] != '\0') {
+ if (sysname[len] == '!')
+ sysname[len] = '/';
+
+ len++;
+ }
+
+ /* trailing number */
+ while (len > 0 && isdigit(sysname[--len]))
+ sysnum = &sysname[len];
+
+ if (len == 0)
+ sysnum = NULL;
+
+ free(device->sysname);
+ device->sysname = sysname;
+ sysname = NULL;
+
+ device->sysnum = sysnum;
+
+ device->sysname_set = true;
+
+ return 0;
+}
+
+_public_ int sd_device_get_sysname(sd_device *device, const char **ret) {
+ int r;
+
+ assert_return(device, -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ if (!device->sysname_set) {
+ r = device_set_sysname(device);
+ if (r < 0)
+ return r;
+ }
+
+ assert_return(device->sysname, -ENOENT);
+
+ *ret = device->sysname;
+
+ return 0;
+}
+
+_public_ int sd_device_get_sysnum(sd_device *device, const char **ret) {
+ int r;
+
+ assert_return(device, -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ if (!device->sysname_set) {
+ r = device_set_sysname(device);
+ if (r < 0)
+ return r;
+ }
+
+ *ret = device->sysnum;
+
+ return 0;
+}
+
+static bool is_valid_tag(const char *tag) {
+ assert(tag);
+
+ return !strchr(tag, ':') && !strchr(tag, ' ');
+}
+
+int device_add_tag(sd_device *device, const char *tag) {
+ int r;
+
+ assert(device);
+ assert(tag);
+
+ if (!is_valid_tag(tag))
+ return -EINVAL;
+
+ r = set_ensure_allocated(&device->tags, &string_hash_ops);
+ if (r < 0)
+ return r;
+
+ r = set_put_strdup(device->tags, tag);
+ if (r < 0)
+ return r;
+
+ device->tags_generation++;
+ device->property_tags_outdated = true;
+
+ return 0;
+}
+
+int device_add_devlink(sd_device *device, const char *devlink) {
+ int r;
+
+ assert(device);
+ assert(devlink);
+
+ r = set_ensure_allocated(&device->devlinks, &string_hash_ops);
+ if (r < 0)
+ return r;
+
+ r = set_put_strdup(device->devlinks, devlink);
+ if (r < 0)
+ return r;
+
+ device->devlinks_generation++;
+ device->property_devlinks_outdated = true;
+
+ return 0;
+}
+
+static int device_add_property_internal_from_string(sd_device *device, const char *str) {
+ _cleanup_free_ char *key = NULL;
+ char *value;
+
+ assert(device);
+ assert(str);
+
+ key = strdup(str);
+ if (!key)
+ return -ENOMEM;
+
+ value = strchr(key, '=');
+ if (!value)
+ return -EINVAL;
+
+ *value = '\0';
+
+ if (isempty(++value))
+ value = NULL;
+
+ return device_add_property_internal(device, key, value);
+}
+
+int device_set_usec_initialized(sd_device *device, const char *initialized) {
+ uint64_t usec_initialized;
+ int r;
+
+ assert(device);
+ assert(initialized);
+
+ r = safe_atou64(initialized, &usec_initialized);
+ if (r < 0)
+ return r;
+
+ r = device_add_property_internal(device, "USEC_INITIALIZED", initialized);
+ if (r < 0)
+ return r;
+
+ device->usec_initialized = usec_initialized;
+
+ return 0;
+}
+
+static int handle_db_line(sd_device *device, char key, const char *value) {
+ char *path;
+ int r;
+
+ assert(device);
+ assert(value);
+
+ switch (key) {
+ case 'G':
+ r = device_add_tag(device, value);
+ if (r < 0)
+ return r;
+
+ break;
+ case 'S':
+ path = strjoina("/dev/", value);
+ r = device_add_devlink(device, path);
+ if (r < 0)
+ return r;
+
+ break;
+ case 'E':
+ r = device_add_property_internal_from_string(device, value);
+ if (r < 0)
+ return r;
+
+ break;
+ case 'I':
+ r = device_set_usec_initialized(device, value);
+ if (r < 0)
+ return r;
+
+ break;
+ case 'L':
+ r = safe_atoi(value, &device->devlink_priority);
+ if (r < 0)
+ return r;
+
+ break;
+ case 'W':
+ r = safe_atoi(value, &device->watch_handle);
+ if (r < 0)
+ return r;
+
+ break;
+ default:
+ log_debug("device db: unknown key '%c'", key);
+ }
+
+ return 0;
+}
+
+int device_get_id_filename(sd_device *device, const char **ret) {
+ assert(device);
+ assert(ret);
+
+ if (!device->id_filename) {
+ _cleanup_free_ char *id = NULL;
+ const char *subsystem;
+ dev_t devnum;
+ int ifindex, r;
+
+ r = sd_device_get_subsystem(device, &subsystem);
+ if (r < 0)
+ return r;
+
+ r = sd_device_get_devnum(device, &devnum);
+ if (r < 0)
+ return r;
+
+ r = sd_device_get_ifindex(device, &ifindex);
+ if (r < 0)
+ return r;
+
+ if (major(devnum) > 0) {
+ assert(subsystem);
+
+ /* use dev_t — b259:131072, c254:0 */
+ r = asprintf(&id, "%c%u:%u",
+ streq(subsystem, "block") ? 'b' : 'c',
+ major(devnum), minor(devnum));
+ if (r < 0)
+ return -ENOMEM;
+ } else if (ifindex > 0) {
+ /* use netdev ifindex — n3 */
+ r = asprintf(&id, "n%u", ifindex);
+ if (r < 0)
+ return -ENOMEM;
+ } else {
+ /* use $subsys:$sysname — pci:0000:00:1f.2
+ * sysname() has '!' translated, get it from devpath
+ */
+ const char *sysname;
+
+ sysname = basename(device->devpath);
+ if (!sysname)
+ return -EINVAL;
+
+ if (!subsystem)
+ return -EINVAL;
+
+ r = asprintf(&id, "+%s:%s", subsystem, sysname);
+ if (r < 0)
+ return -ENOMEM;
+ }
+
+ device->id_filename = id;
+ id = NULL;
+ }
+
+ *ret = device->id_filename;
+
+ return 0;
+}
+
+int device_read_db_aux(sd_device *device, bool force) {
+ _cleanup_free_ char *db = NULL;
+ char *path;
+ const char *id, *value;
+ char key;
+ size_t db_len;
+ unsigned i;
+ int r;
+
+ enum {
+ PRE_KEY,
+ KEY,
+ PRE_VALUE,
+ VALUE,
+ INVALID_LINE,
+ } state = PRE_KEY;
+
+ if (device->db_loaded || (!force && device->sealed))
+ return 0;
+
+ device->db_loaded = true;
+
+ r = device_get_id_filename(device, &id);
+ if (r < 0)
+ return r;
+
+ path = strjoina("/run/udev/data/", id);
+
+ r = read_full_file(path, &db, &db_len);
+ if (r < 0) {
+ if (r == -ENOENT)
+ return 0;
+ else
+ return log_debug_errno(r, "sd-device: failed to read db '%s': %m", path);
+ }
+
+ /* devices with a database entry are initialized */
+ device->is_initialized = true;
+
+ for (i = 0; i < db_len; i++) {
+ switch (state) {
+ case PRE_KEY:
+ if (!strchr(NEWLINE, db[i])) {
+ key = db[i];
+
+ state = KEY;
+ }
+
+ break;
+ case KEY:
+ if (db[i] != ':') {
+ log_debug("sd-device: ignoring invalid db entry with key '%c'", key);
+
+ state = INVALID_LINE;
+ } else {
+ db[i] = '\0';
+
+ state = PRE_VALUE;
+ }
+
+ break;
+ case PRE_VALUE:
+ value = &db[i];
+
+ state = VALUE;
+
+ break;
+ case INVALID_LINE:
+ if (strchr(NEWLINE, db[i]))
+ state = PRE_KEY;
+
+ break;
+ case VALUE:
+ if (strchr(NEWLINE, db[i])) {
+ db[i] = '\0';
+ r = handle_db_line(device, key, value);
+ if (r < 0)
+ log_debug_errno(r, "sd-device: failed to handle db entry '%c:%s': %m", key, value);
+
+ state = PRE_KEY;
+ }
+
+ break;
+ default:
+ assert_not_reached("invalid state when parsing db");
+ }
+ }
+
+ return 0;
+}
+
+static int device_read_db(sd_device *device) {
+ return device_read_db_aux(device, false);
+}
+
+_public_ int sd_device_get_is_initialized(sd_device *device, int *initialized) {
+ int r;
+
+ assert_return(device, -EINVAL);
+ assert_return(initialized, -EINVAL);
+
+ r = device_read_db(device);
+ if (r < 0)
+ return r;
+
+ *initialized = device->is_initialized;
+
+ return 0;
+}
+
+_public_ int sd_device_get_usec_since_initialized(sd_device *device, uint64_t *usec) {
+ usec_t now_ts;
+ int r;
+
+ assert_return(device, -EINVAL);
+ assert_return(usec, -EINVAL);
+
+ r = device_read_db(device);
+ if (r < 0)
+ return r;
+
+ if (!device->is_initialized)
+ return -EBUSY;
+
+ if (!device->usec_initialized)
+ return -ENODATA;
+
+ now_ts = now(clock_boottime_or_monotonic());
+
+ if (now_ts < device->usec_initialized)
+ return -EIO;
+
+ *usec = now_ts - device->usec_initialized;
+
+ return 0;
+}
+
+_public_ const char *sd_device_get_tag_first(sd_device *device) {
+ void *v;
+
+ assert_return(device, NULL);
+
+ (void) device_read_db(device);
+
+ device->tags_iterator_generation = device->tags_generation;
+ device->tags_iterator = ITERATOR_FIRST;
+
+ (void) set_iterate(device->tags, &device->tags_iterator, &v);
+ return v;
+}
+
+_public_ const char *sd_device_get_tag_next(sd_device *device) {
+ void *v;
+
+ assert_return(device, NULL);
+
+ (void) device_read_db(device);
+
+ if (device->tags_iterator_generation != device->tags_generation)
+ return NULL;
+
+ (void) set_iterate(device->tags, &device->tags_iterator, &v);
+ return v;
+}
+
+_public_ const char *sd_device_get_devlink_first(sd_device *device) {
+ void *v;
+
+ assert_return(device, NULL);
+
+ (void) device_read_db(device);
+
+ device->devlinks_iterator_generation = device->devlinks_generation;
+ device->devlinks_iterator = ITERATOR_FIRST;
+
+ (void) set_iterate(device->devlinks, &device->devlinks_iterator, &v);
+ return v;
+}
+
+_public_ const char *sd_device_get_devlink_next(sd_device *device) {
+ void *v;
+
+ assert_return(device, NULL);
+
+ (void) device_read_db(device);
+
+ if (device->devlinks_iterator_generation != device->devlinks_generation)
+ return NULL;
+
+ (void) set_iterate(device->devlinks, &device->devlinks_iterator, &v);
+ return v;
+}
+
+static int device_properties_prepare(sd_device *device) {
+ int r;
+
+ assert(device);
+
+ r = device_read_uevent_file(device);
+ if (r < 0)
+ return r;
+
+ r = device_read_db(device);
+ if (r < 0)
+ return r;
+
+ if (device->property_devlinks_outdated) {
+ _cleanup_free_ char *devlinks = NULL;
+ size_t devlinks_allocated = 0, devlinks_len = 0;
+ const char *devlink;
+
+ for (devlink = sd_device_get_devlink_first(device); devlink; devlink = sd_device_get_devlink_next(device)) {
+ char *e;
+
+ if (!GREEDY_REALLOC(devlinks, devlinks_allocated, devlinks_len + strlen(devlink) + 2))
+ return -ENOMEM;
+ if (devlinks_len > 0)
+ stpcpy(devlinks + devlinks_len++, " ");
+ e = stpcpy(devlinks + devlinks_len, devlink);
+ devlinks_len = e - devlinks;
+ }
+
+ r = device_add_property_internal(device, "DEVLINKS", devlinks);
+ if (r < 0)
+ return r;
+
+ device->property_devlinks_outdated = false;
+ }
+
+ if (device->property_tags_outdated) {
+ _cleanup_free_ char *tags = NULL;
+ size_t tags_allocated = 0, tags_len = 0;
+ const char *tag;
+
+ if (!GREEDY_REALLOC(tags, tags_allocated, 2))
+ return -ENOMEM;
+ stpcpy(tags, ":");
+ tags_len++;
+
+ for (tag = sd_device_get_tag_first(device); tag; tag = sd_device_get_tag_next(device)) {
+ char *e;
+
+ if (!GREEDY_REALLOC(tags, tags_allocated, tags_len + strlen(tag) + 2))
+ return -ENOMEM;
+ e = stpcpy(stpcpy(tags + tags_len, tag), ":");
+ tags_len = e - tags;
+ }
+
+ r = device_add_property_internal(device, "TAGS", tags);
+ if (r < 0)
+ return r;
+
+ device->property_tags_outdated = false;
+ }
+
+ return 0;
+}
+
+_public_ const char *sd_device_get_property_first(sd_device *device, const char **_value) {
+ const char *key;
+ const char *value;
+ int r;
+
+ assert_return(device, NULL);
+
+ r = device_properties_prepare(device);
+ if (r < 0)
+ return NULL;
+
+ device->properties_iterator_generation = device->properties_generation;
+ device->properties_iterator = ITERATOR_FIRST;
+
+ ordered_hashmap_iterate(device->properties, &device->properties_iterator, (void**)&value, (const void**)&key);
+
+ if (_value)
+ *_value = value;
+
+ return key;
+}
+
+_public_ const char *sd_device_get_property_next(sd_device *device, const char **_value) {
+ const char *key;
+ const char *value;
+ int r;
+
+ assert_return(device, NULL);
+
+ r = device_properties_prepare(device);
+ if (r < 0)
+ return NULL;
+
+ if (device->properties_iterator_generation != device->properties_generation)
+ return NULL;
+
+ ordered_hashmap_iterate(device->properties, &device->properties_iterator, (void**)&value, (const void**)&key);
+
+ if (_value)
+ *_value = value;
+
+ return key;
+}
+
+static int device_sysattrs_read_all(sd_device *device) {
+ _cleanup_closedir_ DIR *dir = NULL;
+ const char *syspath;
+ struct dirent *dent;
+ int r;
+
+ assert(device);
+
+ if (device->sysattrs_read)
+ return 0;
+
+ r = sd_device_get_syspath(device, &syspath);
+ if (r < 0)
+ return r;
+
+ dir = opendir(syspath);
+ if (!dir)
+ return -errno;
+
+ r = set_ensure_allocated(&device->sysattrs, &string_hash_ops);
+ if (r < 0)
+ return r;
+
+ for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
+ char *path;
+ struct stat statbuf;
+
+ /* only handle symlinks and regular files */
+ if (dent->d_type != DT_LNK && dent->d_type != DT_REG)
+ continue;
+
+ path = strjoina(syspath, "/", dent->d_name);
+
+ if (lstat(path, &statbuf) != 0)
+ continue;
+
+ if (!(statbuf.st_mode & S_IRUSR))
+ continue;
+
+ r = set_put_strdup(device->sysattrs, dent->d_name);
+ if (r < 0)
+ return r;
+ }
+
+ device->sysattrs_read = true;
+
+ return 0;
+}
+
+_public_ const char *sd_device_get_sysattr_first(sd_device *device) {
+ void *v;
+ int r;
+
+ assert_return(device, NULL);
+
+ if (!device->sysattrs_read) {
+ r = device_sysattrs_read_all(device);
+ if (r < 0) {
+ errno = -r;
+ return NULL;
+ }
+ }
+
+ device->sysattrs_iterator = ITERATOR_FIRST;
+
+ (void) set_iterate(device->sysattrs, &device->sysattrs_iterator, &v);
+ return v;
+}
+
+_public_ const char *sd_device_get_sysattr_next(sd_device *device) {
+ void *v;
+
+ assert_return(device, NULL);
+
+ if (!device->sysattrs_read)
+ return NULL;
+
+ (void) set_iterate(device->sysattrs, &device->sysattrs_iterator, &v);
+ return v;
+}
+
+_public_ int sd_device_has_tag(sd_device *device, const char *tag) {
+ assert_return(device, -EINVAL);
+ assert_return(tag, -EINVAL);
+
+ (void) device_read_db(device);
+
+ return !!set_contains(device->tags, tag);
+}
+
+_public_ int sd_device_get_property_value(sd_device *device, const char *key, const char **_value) {
+ char *value;
+ int r;
+
+ assert_return(device, -EINVAL);
+ assert_return(key, -EINVAL);
+ assert_return(_value, -EINVAL);
+
+ r = device_properties_prepare(device);
+ if (r < 0)
+ return r;
+
+ value = ordered_hashmap_get(device->properties, key);
+ if (!value)
+ return -ENOENT;
+
+ *_value = value;
+
+ return 0;
+}
+
+/* replaces the value if it already exists */
+static int device_add_sysattr_value(sd_device *device, const char *_key, char *value) {
+ _cleanup_free_ char *key = NULL;
+ _cleanup_free_ char *value_old = NULL;
+ int r;
+
+ assert(device);
+ assert(_key);
+
+ r = hashmap_ensure_allocated(&device->sysattr_values, &string_hash_ops);
+ if (r < 0)
+ return r;
+
+ value_old = hashmap_remove2(device->sysattr_values, _key, (void **)&key);
+ if (!key) {
+ key = strdup(_key);
+ if (!key)
+ return -ENOMEM;
+ }
+
+ r = hashmap_put(device->sysattr_values, key, value);
+ if (r < 0)
+ return r;
+
+ key = NULL;
+
+ return 0;
+}
+
+static int device_get_sysattr_value(sd_device *device, const char *_key, const char **_value) {
+ const char *key = NULL, *value;
+
+ assert(device);
+ assert(_key);
+
+ value = hashmap_get2(device->sysattr_values, _key, (void **) &key);
+ if (!key)
+ return -ENOENT;
+
+ if (_value)
+ *_value = value;
+
+ return 0;
+}
+
+/* We cache all sysattr lookups. If an attribute does not exist, it is stored
+ * with a NULL value in the cache, otherwise the returned string is stored */
+_public_ int sd_device_get_sysattr_value(sd_device *device, const char *sysattr, const char **_value) {
+ _cleanup_free_ char *value = NULL;
+ const char *syspath, *cached_value = NULL;
+ char *path;
+ struct stat statbuf;
+ int r;
+
+ assert_return(device, -EINVAL);
+ assert_return(sysattr, -EINVAL);
+
+ /* look for possibly already cached result */
+ r = device_get_sysattr_value(device, sysattr, &cached_value);
+ if (r != -ENOENT) {
+ if (r < 0)
+ return r;
+
+ if (!cached_value)
+ /* we looked up the sysattr before and it did not exist */
+ return -ENOENT;
+
+ if (_value)
+ *_value = cached_value;
+
+ return 0;
+ }
+
+ r = sd_device_get_syspath(device, &syspath);
+ if (r < 0)
+ return r;
+
+ path = strjoina(syspath, "/", sysattr);
+ r = lstat(path, &statbuf);
+ if (r < 0) {
+ /* remember that we could not access the sysattr */
+ r = device_add_sysattr_value(device, sysattr, NULL);
+ if (r < 0)
+ return r;
+
+ return -ENOENT;
+ } else if (S_ISLNK(statbuf.st_mode)) {
+ /* Some core links return only the last element of the target path,
+ * these are just values, the paths should not be exposed. */
+ if (STR_IN_SET(sysattr, "driver", "subsystem", "module")) {
+ r = readlink_value(path, &value);
+ if (r < 0)
+ return r;
+ } else
+ return -EINVAL;
+ } else if (S_ISDIR(statbuf.st_mode)) {
+ /* skip directories */
+ return -EINVAL;
+ } else if (!(statbuf.st_mode & S_IRUSR)) {
+ /* skip non-readable files */
+ return -EPERM;
+ } else {
+ size_t size;
+
+ /* read attribute value */
+ r = read_full_file(path, &value, &size);
+ if (r < 0)
+ return r;
+
+ /* drop trailing newlines */
+ while (size > 0 && value[--size] == '\n')
+ value[size] = '\0';
+ }
+
+ r = device_add_sysattr_value(device, sysattr, value);
+ if (r < 0)
+ return r;
+
+ *_value = value;
+ value = NULL;
+
+ return 0;
+}
+
+static void device_remove_sysattr_value(sd_device *device, const char *_key) {
+ _cleanup_free_ char *key = NULL;
+ _cleanup_free_ char *value = NULL;
+
+ assert(device);
+ assert(_key);
+
+ value = hashmap_remove2(device->sysattr_values, _key, (void **) &key);
+
+ return;
+}
+
+/* set the attribute and save it in the cache. If a NULL value is passed the
+ * attribute is cleared from the cache */
+_public_ int sd_device_set_sysattr_value(sd_device *device, const char *sysattr, char *_value) {
+ _cleanup_close_ int fd = -1;
+ _cleanup_free_ char *value = NULL;
+ const char *syspath;
+ char *path;
+ struct stat statbuf;
+ size_t value_len = 0;
+ ssize_t size;
+ int r;
+
+ assert_return(device, -EINVAL);
+ assert_return(sysattr, -EINVAL);
+
+ if (!_value) {
+ device_remove_sysattr_value(device, sysattr);
+
+ return 0;
+ }
+
+ r = sd_device_get_syspath(device, &syspath);
+ if (r < 0)
+ return r;
+
+ path = strjoina(syspath, "/", sysattr);
+ r = lstat(path, &statbuf);
+ if (r < 0) {
+ value = strdup("");
+ if (!value)
+ return -ENOMEM;
+
+ r = device_add_sysattr_value(device, sysattr, value);
+ if (r < 0)
+ return r;
+
+ return -ENXIO;
+ }
+
+ if (S_ISLNK(statbuf.st_mode))
+ return -EINVAL;
+
+ /* skip directories */
+ if (S_ISDIR(statbuf.st_mode))
+ return -EISDIR;
+
+ /* skip non-readable files */
+ if ((statbuf.st_mode & S_IRUSR) == 0)
+ return -EACCES;
+
+ value_len = strlen(_value);
+
+ /* drop trailing newlines */
+ while (value_len > 0 && _value[value_len - 1] == '\n')
+ _value[--value_len] = '\0';
+
+ /* value length is limited to 4k */
+ if (value_len > 4096)
+ return -EINVAL;
+
+ fd = open(path, O_WRONLY | O_CLOEXEC);
+ if (fd < 0)
+ return -errno;
+
+ value = strdup(_value);
+ if (!value)
+ return -ENOMEM;
+
+ size = write(fd, value, value_len);
+ if (size < 0)
+ return -errno;
+
+ if ((size_t)size != value_len)
+ return -EIO;
+
+ r = device_add_sysattr_value(device, sysattr, value);
+ if (r < 0)
+ return r;
+
+ value = NULL;
+
+ return 0;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-event/sd-event.c b/src/libsystemd/libsystemd-internal/sd-event/sd-event.c
new file mode 100644
index 0000000000..7f6f485353
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-event/sd-event.c
@@ -0,0 +1,2898 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <sys/epoll.h>
+#include <sys/timerfd.h>
+#include <sys/wait.h>
+
+#include <systemd/sd-daemon.h>
+#include <systemd/sd-event.h>
+#include <systemd/sd-id128.h>
+
+#include "alloc-util.h"
+#include "fd-util.h"
+#include "hashmap.h"
+#include "list.h"
+#include "macro.h"
+#include "missing.h"
+#include "prioq.h"
+#include "process-util.h"
+#include "set.h"
+#include "signal-util.h"
+#include "string-table.h"
+#include "string-util.h"
+#include "time-util.h"
+#include "util.h"
+
+#define DEFAULT_ACCURACY_USEC (250 * USEC_PER_MSEC)
+
+typedef enum EventSourceType {
+ SOURCE_IO,
+ SOURCE_TIME_REALTIME,
+ SOURCE_TIME_BOOTTIME,
+ SOURCE_TIME_MONOTONIC,
+ SOURCE_TIME_REALTIME_ALARM,
+ SOURCE_TIME_BOOTTIME_ALARM,
+ SOURCE_SIGNAL,
+ SOURCE_CHILD,
+ SOURCE_DEFER,
+ SOURCE_POST,
+ SOURCE_EXIT,
+ SOURCE_WATCHDOG,
+ _SOURCE_EVENT_SOURCE_TYPE_MAX,
+ _SOURCE_EVENT_SOURCE_TYPE_INVALID = -1
+} EventSourceType;
+
+static const char* const event_source_type_table[_SOURCE_EVENT_SOURCE_TYPE_MAX] = {
+ [SOURCE_IO] = "io",
+ [SOURCE_TIME_REALTIME] = "realtime",
+ [SOURCE_TIME_BOOTTIME] = "bootime",
+ [SOURCE_TIME_MONOTONIC] = "monotonic",
+ [SOURCE_TIME_REALTIME_ALARM] = "realtime-alarm",
+ [SOURCE_TIME_BOOTTIME_ALARM] = "boottime-alarm",
+ [SOURCE_SIGNAL] = "signal",
+ [SOURCE_CHILD] = "child",
+ [SOURCE_DEFER] = "defer",
+ [SOURCE_POST] = "post",
+ [SOURCE_EXIT] = "exit",
+ [SOURCE_WATCHDOG] = "watchdog",
+};
+
+DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(event_source_type, int);
+
+/* All objects we use in epoll events start with this value, so that
+ * we know how to dispatch it */
+typedef enum WakeupType {
+ WAKEUP_NONE,
+ WAKEUP_EVENT_SOURCE,
+ WAKEUP_CLOCK_DATA,
+ WAKEUP_SIGNAL_DATA,
+ _WAKEUP_TYPE_MAX,
+ _WAKEUP_TYPE_INVALID = -1,
+} WakeupType;
+
+#define EVENT_SOURCE_IS_TIME(t) IN_SET((t), SOURCE_TIME_REALTIME, SOURCE_TIME_BOOTTIME, SOURCE_TIME_MONOTONIC, SOURCE_TIME_REALTIME_ALARM, SOURCE_TIME_BOOTTIME_ALARM)
+
+struct sd_event_source {
+ WakeupType wakeup;
+
+ unsigned n_ref;
+
+ sd_event *event;
+ void *userdata;
+ sd_event_handler_t prepare;
+
+ char *description;
+
+ EventSourceType type:5;
+ int enabled:3;
+ bool pending:1;
+ bool dispatching:1;
+ bool floating:1;
+
+ int64_t priority;
+ unsigned pending_index;
+ unsigned prepare_index;
+ unsigned pending_iteration;
+ unsigned prepare_iteration;
+
+ LIST_FIELDS(sd_event_source, sources);
+
+ union {
+ struct {
+ sd_event_io_handler_t callback;
+ int fd;
+ uint32_t events;
+ uint32_t revents;
+ bool registered:1;
+ } io;
+ struct {
+ sd_event_time_handler_t callback;
+ usec_t next, accuracy;
+ unsigned earliest_index;
+ unsigned latest_index;
+ } time;
+ struct {
+ sd_event_signal_handler_t callback;
+ struct signalfd_siginfo siginfo;
+ int sig;
+ } signal;
+ struct {
+ sd_event_child_handler_t callback;
+ siginfo_t siginfo;
+ pid_t pid;
+ int options;
+ } child;
+ struct {
+ sd_event_handler_t callback;
+ } defer;
+ struct {
+ sd_event_handler_t callback;
+ } post;
+ struct {
+ sd_event_handler_t callback;
+ unsigned prioq_index;
+ } exit;
+ };
+};
+
+struct clock_data {
+ WakeupType wakeup;
+ int fd;
+
+ /* For all clocks we maintain two priority queues each, one
+ * ordered for the earliest times the events may be
+ * dispatched, and one ordered by the latest times they must
+ * have been dispatched. The range between the top entries in
+ * the two prioqs is the time window we can freely schedule
+ * wakeups in */
+
+ Prioq *earliest;
+ Prioq *latest;
+ usec_t next;
+
+ bool needs_rearm:1;
+};
+
+struct signal_data {
+ WakeupType wakeup;
+
+ /* For each priority we maintain one signal fd, so that we
+ * only have to dequeue a single event per priority at a
+ * time. */
+
+ int fd;
+ int64_t priority;
+ sigset_t sigset;
+ sd_event_source *current;
+};
+
+struct sd_event {
+ unsigned n_ref;
+
+ int epoll_fd;
+ int watchdog_fd;
+
+ Prioq *pending;
+ Prioq *prepare;
+
+ /* timerfd_create() only supports these five clocks so far. We
+ * can add support for more clocks when the kernel learns to
+ * deal with them, too. */
+ struct clock_data realtime;
+ struct clock_data boottime;
+ struct clock_data monotonic;
+ struct clock_data realtime_alarm;
+ struct clock_data boottime_alarm;
+
+ usec_t perturb;
+
+ sd_event_source **signal_sources; /* indexed by signal number */
+ Hashmap *signal_data; /* indexed by priority */
+
+ Hashmap *child_sources;
+ unsigned n_enabled_child_sources;
+
+ Set *post_sources;
+
+ Prioq *exit;
+
+ pid_t original_pid;
+
+ unsigned iteration;
+ dual_timestamp timestamp;
+ usec_t timestamp_boottime;
+ int state;
+
+ bool exit_requested:1;
+ bool need_process_child:1;
+ bool watchdog:1;
+ bool profile_delays:1;
+
+ int exit_code;
+
+ pid_t tid;
+ sd_event **default_event_ptr;
+
+ usec_t watchdog_last, watchdog_period;
+
+ unsigned n_sources;
+
+ LIST_HEAD(sd_event_source, sources);
+
+ usec_t last_run, last_log;
+ unsigned delays[sizeof(usec_t) * 8];
+};
+
+static void source_disconnect(sd_event_source *s);
+
+static int pending_prioq_compare(const void *a, const void *b) {
+ const sd_event_source *x = a, *y = b;
+
+ assert(x->pending);
+ assert(y->pending);
+
+ /* Enabled ones first */
+ if (x->enabled != SD_EVENT_OFF && y->enabled == SD_EVENT_OFF)
+ return -1;
+ if (x->enabled == SD_EVENT_OFF && y->enabled != SD_EVENT_OFF)
+ return 1;
+
+ /* Lower priority values first */
+ if (x->priority < y->priority)
+ return -1;
+ if (x->priority > y->priority)
+ return 1;
+
+ /* Older entries first */
+ if (x->pending_iteration < y->pending_iteration)
+ return -1;
+ if (x->pending_iteration > y->pending_iteration)
+ return 1;
+
+ return 0;
+}
+
+static int prepare_prioq_compare(const void *a, const void *b) {
+ const sd_event_source *x = a, *y = b;
+
+ assert(x->prepare);
+ assert(y->prepare);
+
+ /* Enabled ones first */
+ if (x->enabled != SD_EVENT_OFF && y->enabled == SD_EVENT_OFF)
+ return -1;
+ if (x->enabled == SD_EVENT_OFF && y->enabled != SD_EVENT_OFF)
+ return 1;
+
+ /* Move most recently prepared ones last, so that we can stop
+ * preparing as soon as we hit one that has already been
+ * prepared in the current iteration */
+ if (x->prepare_iteration < y->prepare_iteration)
+ return -1;
+ if (x->prepare_iteration > y->prepare_iteration)
+ return 1;
+
+ /* Lower priority values first */
+ if (x->priority < y->priority)
+ return -1;
+ if (x->priority > y->priority)
+ return 1;
+
+ return 0;
+}
+
+static int earliest_time_prioq_compare(const void *a, const void *b) {
+ const sd_event_source *x = a, *y = b;
+
+ assert(EVENT_SOURCE_IS_TIME(x->type));
+ assert(x->type == y->type);
+
+ /* Enabled ones first */
+ if (x->enabled != SD_EVENT_OFF && y->enabled == SD_EVENT_OFF)
+ return -1;
+ if (x->enabled == SD_EVENT_OFF && y->enabled != SD_EVENT_OFF)
+ return 1;
+
+ /* Move the pending ones to the end */
+ if (!x->pending && y->pending)
+ return -1;
+ if (x->pending && !y->pending)
+ return 1;
+
+ /* Order by time */
+ if (x->time.next < y->time.next)
+ return -1;
+ if (x->time.next > y->time.next)
+ return 1;
+
+ return 0;
+}
+
+static usec_t time_event_source_latest(const sd_event_source *s) {
+ return usec_add(s->time.next, s->time.accuracy);
+}
+
+static int latest_time_prioq_compare(const void *a, const void *b) {
+ const sd_event_source *x = a, *y = b;
+
+ assert(EVENT_SOURCE_IS_TIME(x->type));
+ assert(x->type == y->type);
+
+ /* Enabled ones first */
+ if (x->enabled != SD_EVENT_OFF && y->enabled == SD_EVENT_OFF)
+ return -1;
+ if (x->enabled == SD_EVENT_OFF && y->enabled != SD_EVENT_OFF)
+ return 1;
+
+ /* Move the pending ones to the end */
+ if (!x->pending && y->pending)
+ return -1;
+ if (x->pending && !y->pending)
+ return 1;
+
+ /* Order by time */
+ if (time_event_source_latest(x) < time_event_source_latest(y))
+ return -1;
+ if (time_event_source_latest(x) > time_event_source_latest(y))
+ return 1;
+
+ return 0;
+}
+
+static int exit_prioq_compare(const void *a, const void *b) {
+ const sd_event_source *x = a, *y = b;
+
+ assert(x->type == SOURCE_EXIT);
+ assert(y->type == SOURCE_EXIT);
+
+ /* Enabled ones first */
+ if (x->enabled != SD_EVENT_OFF && y->enabled == SD_EVENT_OFF)
+ return -1;
+ if (x->enabled == SD_EVENT_OFF && y->enabled != SD_EVENT_OFF)
+ return 1;
+
+ /* Lower priority values first */
+ if (x->priority < y->priority)
+ return -1;
+ if (x->priority > y->priority)
+ return 1;
+
+ return 0;
+}
+
+static void free_clock_data(struct clock_data *d) {
+ assert(d);
+ assert(d->wakeup == WAKEUP_CLOCK_DATA);
+
+ safe_close(d->fd);
+ prioq_free(d->earliest);
+ prioq_free(d->latest);
+}
+
+static void event_free(sd_event *e) {
+ sd_event_source *s;
+
+ assert(e);
+
+ while ((s = e->sources)) {
+ assert(s->floating);
+ source_disconnect(s);
+ sd_event_source_unref(s);
+ }
+
+ assert(e->n_sources == 0);
+
+ if (e->default_event_ptr)
+ *(e->default_event_ptr) = NULL;
+
+ safe_close(e->epoll_fd);
+ safe_close(e->watchdog_fd);
+
+ free_clock_data(&e->realtime);
+ free_clock_data(&e->boottime);
+ free_clock_data(&e->monotonic);
+ free_clock_data(&e->realtime_alarm);
+ free_clock_data(&e->boottime_alarm);
+
+ prioq_free(e->pending);
+ prioq_free(e->prepare);
+ prioq_free(e->exit);
+
+ free(e->signal_sources);
+ hashmap_free(e->signal_data);
+
+ hashmap_free(e->child_sources);
+ set_free(e->post_sources);
+ free(e);
+}
+
+_public_ int sd_event_new(sd_event** ret) {
+ sd_event *e;
+ int r;
+
+ assert_return(ret, -EINVAL);
+
+ e = new0(sd_event, 1);
+ if (!e)
+ return -ENOMEM;
+
+ e->n_ref = 1;
+ e->watchdog_fd = e->epoll_fd = e->realtime.fd = e->boottime.fd = e->monotonic.fd = e->realtime_alarm.fd = e->boottime_alarm.fd = -1;
+ e->realtime.next = e->boottime.next = e->monotonic.next = e->realtime_alarm.next = e->boottime_alarm.next = USEC_INFINITY;
+ e->realtime.wakeup = e->boottime.wakeup = e->monotonic.wakeup = e->realtime_alarm.wakeup = e->boottime_alarm.wakeup = WAKEUP_CLOCK_DATA;
+ e->original_pid = getpid();
+ e->perturb = USEC_INFINITY;
+
+ r = prioq_ensure_allocated(&e->pending, pending_prioq_compare);
+ if (r < 0)
+ goto fail;
+
+ e->epoll_fd = epoll_create1(EPOLL_CLOEXEC);
+ if (e->epoll_fd < 0) {
+ r = -errno;
+ goto fail;
+ }
+
+ if (secure_getenv("SD_EVENT_PROFILE_DELAYS")) {
+ log_debug("Event loop profiling enabled. Logarithmic histogram of event loop iterations in the range 2^0 ... 2^63 us will be logged every 5s.");
+ e->profile_delays = true;
+ }
+
+ *ret = e;
+ return 0;
+
+fail:
+ event_free(e);
+ return r;
+}
+
+_public_ sd_event* sd_event_ref(sd_event *e) {
+
+ if (!e)
+ return NULL;
+
+ assert(e->n_ref >= 1);
+ e->n_ref++;
+
+ return e;
+}
+
+_public_ sd_event* sd_event_unref(sd_event *e) {
+
+ if (!e)
+ return NULL;
+
+ assert(e->n_ref >= 1);
+ e->n_ref--;
+
+ if (e->n_ref <= 0)
+ event_free(e);
+
+ return NULL;
+}
+
+static bool event_pid_changed(sd_event *e) {
+ assert(e);
+
+ /* We don't support people creating an event loop and keeping
+ * it around over a fork(). Let's complain. */
+
+ return e->original_pid != getpid();
+}
+
+static void source_io_unregister(sd_event_source *s) {
+ int r;
+
+ assert(s);
+ assert(s->type == SOURCE_IO);
+
+ if (event_pid_changed(s->event))
+ return;
+
+ if (!s->io.registered)
+ return;
+
+ r = epoll_ctl(s->event->epoll_fd, EPOLL_CTL_DEL, s->io.fd, NULL);
+ if (r < 0)
+ log_debug_errno(errno, "Failed to remove source %s (type %s) from epoll: %m",
+ strna(s->description), event_source_type_to_string(s->type));
+
+ s->io.registered = false;
+}
+
+static int source_io_register(
+ sd_event_source *s,
+ int enabled,
+ uint32_t events) {
+
+ struct epoll_event ev = {};
+ int r;
+
+ assert(s);
+ assert(s->type == SOURCE_IO);
+ assert(enabled != SD_EVENT_OFF);
+
+ ev.events = events;
+ ev.data.ptr = s;
+
+ if (enabled == SD_EVENT_ONESHOT)
+ ev.events |= EPOLLONESHOT;
+
+ if (s->io.registered)
+ r = epoll_ctl(s->event->epoll_fd, EPOLL_CTL_MOD, s->io.fd, &ev);
+ else
+ r = epoll_ctl(s->event->epoll_fd, EPOLL_CTL_ADD, s->io.fd, &ev);
+ if (r < 0)
+ return -errno;
+
+ s->io.registered = true;
+
+ return 0;
+}
+
+static clockid_t event_source_type_to_clock(EventSourceType t) {
+
+ switch (t) {
+
+ case SOURCE_TIME_REALTIME:
+ return CLOCK_REALTIME;
+
+ case SOURCE_TIME_BOOTTIME:
+ return CLOCK_BOOTTIME;
+
+ case SOURCE_TIME_MONOTONIC:
+ return CLOCK_MONOTONIC;
+
+ case SOURCE_TIME_REALTIME_ALARM:
+ return CLOCK_REALTIME_ALARM;
+
+ case SOURCE_TIME_BOOTTIME_ALARM:
+ return CLOCK_BOOTTIME_ALARM;
+
+ default:
+ return (clockid_t) -1;
+ }
+}
+
+static EventSourceType clock_to_event_source_type(clockid_t clock) {
+
+ switch (clock) {
+
+ case CLOCK_REALTIME:
+ return SOURCE_TIME_REALTIME;
+
+ case CLOCK_BOOTTIME:
+ return SOURCE_TIME_BOOTTIME;
+
+ case CLOCK_MONOTONIC:
+ return SOURCE_TIME_MONOTONIC;
+
+ case CLOCK_REALTIME_ALARM:
+ return SOURCE_TIME_REALTIME_ALARM;
+
+ case CLOCK_BOOTTIME_ALARM:
+ return SOURCE_TIME_BOOTTIME_ALARM;
+
+ default:
+ return _SOURCE_EVENT_SOURCE_TYPE_INVALID;
+ }
+}
+
+static struct clock_data* event_get_clock_data(sd_event *e, EventSourceType t) {
+ assert(e);
+
+ switch (t) {
+
+ case SOURCE_TIME_REALTIME:
+ return &e->realtime;
+
+ case SOURCE_TIME_BOOTTIME:
+ return &e->boottime;
+
+ case SOURCE_TIME_MONOTONIC:
+ return &e->monotonic;
+
+ case SOURCE_TIME_REALTIME_ALARM:
+ return &e->realtime_alarm;
+
+ case SOURCE_TIME_BOOTTIME_ALARM:
+ return &e->boottime_alarm;
+
+ default:
+ return NULL;
+ }
+}
+
+static int event_make_signal_data(
+ sd_event *e,
+ int sig,
+ struct signal_data **ret) {
+
+ struct epoll_event ev = {};
+ struct signal_data *d;
+ bool added = false;
+ sigset_t ss_copy;
+ int64_t priority;
+ int r;
+
+ assert(e);
+
+ if (event_pid_changed(e))
+ return -ECHILD;
+
+ if (e->signal_sources && e->signal_sources[sig])
+ priority = e->signal_sources[sig]->priority;
+ else
+ priority = 0;
+
+ d = hashmap_get(e->signal_data, &priority);
+ if (d) {
+ if (sigismember(&d->sigset, sig) > 0) {
+ if (ret)
+ *ret = d;
+ return 0;
+ }
+ } else {
+ r = hashmap_ensure_allocated(&e->signal_data, &uint64_hash_ops);
+ if (r < 0)
+ return r;
+
+ d = new0(struct signal_data, 1);
+ if (!d)
+ return -ENOMEM;
+
+ d->wakeup = WAKEUP_SIGNAL_DATA;
+ d->fd = -1;
+ d->priority = priority;
+
+ r = hashmap_put(e->signal_data, &d->priority, d);
+ if (r < 0) {
+ free(d);
+ return r;
+ }
+
+ added = true;
+ }
+
+ ss_copy = d->sigset;
+ assert_se(sigaddset(&ss_copy, sig) >= 0);
+
+ r = signalfd(d->fd, &ss_copy, SFD_NONBLOCK|SFD_CLOEXEC);
+ if (r < 0) {
+ r = -errno;
+ goto fail;
+ }
+
+ d->sigset = ss_copy;
+
+ if (d->fd >= 0) {
+ if (ret)
+ *ret = d;
+ return 0;
+ }
+
+ d->fd = r;
+
+ ev.events = EPOLLIN;
+ ev.data.ptr = d;
+
+ r = epoll_ctl(e->epoll_fd, EPOLL_CTL_ADD, d->fd, &ev);
+ if (r < 0) {
+ r = -errno;
+ goto fail;
+ }
+
+ if (ret)
+ *ret = d;
+
+ return 0;
+
+fail:
+ if (added) {
+ d->fd = safe_close(d->fd);
+ hashmap_remove(e->signal_data, &d->priority);
+ free(d);
+ }
+
+ return r;
+}
+
+static void event_unmask_signal_data(sd_event *e, struct signal_data *d, int sig) {
+ assert(e);
+ assert(d);
+
+ /* Turns off the specified signal in the signal data
+ * object. If the signal mask of the object becomes empty that
+ * way removes it. */
+
+ if (sigismember(&d->sigset, sig) == 0)
+ return;
+
+ assert_se(sigdelset(&d->sigset, sig) >= 0);
+
+ if (sigisemptyset(&d->sigset)) {
+
+ /* If all the mask is all-zero we can get rid of the structure */
+ hashmap_remove(e->signal_data, &d->priority);
+ assert(!d->current);
+ safe_close(d->fd);
+ free(d);
+ return;
+ }
+
+ assert(d->fd >= 0);
+
+ if (signalfd(d->fd, &d->sigset, SFD_NONBLOCK|SFD_CLOEXEC) < 0)
+ log_debug_errno(errno, "Failed to unset signal bit, ignoring: %m");
+}
+
+static void event_gc_signal_data(sd_event *e, const int64_t *priority, int sig) {
+ struct signal_data *d;
+ static const int64_t zero_priority = 0;
+
+ assert(e);
+
+ /* Rechecks if the specified signal is still something we are
+ * interested in. If not, we'll unmask it, and possibly drop
+ * the signalfd for it. */
+
+ if (sig == SIGCHLD &&
+ e->n_enabled_child_sources > 0)
+ return;
+
+ if (e->signal_sources &&
+ e->signal_sources[sig] &&
+ e->signal_sources[sig]->enabled != SD_EVENT_OFF)
+ return;
+
+ /*
+ * The specified signal might be enabled in three different queues:
+ *
+ * 1) the one that belongs to the priority passed (if it is non-NULL)
+ * 2) the one that belongs to the priority of the event source of the signal (if there is one)
+ * 3) the 0 priority (to cover the SIGCHLD case)
+ *
+ * Hence, let's remove it from all three here.
+ */
+
+ if (priority) {
+ d = hashmap_get(e->signal_data, priority);
+ if (d)
+ event_unmask_signal_data(e, d, sig);
+ }
+
+ if (e->signal_sources && e->signal_sources[sig]) {
+ d = hashmap_get(e->signal_data, &e->signal_sources[sig]->priority);
+ if (d)
+ event_unmask_signal_data(e, d, sig);
+ }
+
+ d = hashmap_get(e->signal_data, &zero_priority);
+ if (d)
+ event_unmask_signal_data(e, d, sig);
+}
+
+static void source_disconnect(sd_event_source *s) {
+ sd_event *event;
+
+ assert(s);
+
+ if (!s->event)
+ return;
+
+ assert(s->event->n_sources > 0);
+
+ switch (s->type) {
+
+ case SOURCE_IO:
+ if (s->io.fd >= 0)
+ source_io_unregister(s);
+
+ break;
+
+ case SOURCE_TIME_REALTIME:
+ case SOURCE_TIME_BOOTTIME:
+ case SOURCE_TIME_MONOTONIC:
+ case SOURCE_TIME_REALTIME_ALARM:
+ case SOURCE_TIME_BOOTTIME_ALARM: {
+ struct clock_data *d;
+
+ d = event_get_clock_data(s->event, s->type);
+ assert(d);
+
+ prioq_remove(d->earliest, s, &s->time.earliest_index);
+ prioq_remove(d->latest, s, &s->time.latest_index);
+ d->needs_rearm = true;
+ break;
+ }
+
+ case SOURCE_SIGNAL:
+ if (s->signal.sig > 0) {
+
+ if (s->event->signal_sources)
+ s->event->signal_sources[s->signal.sig] = NULL;
+
+ event_gc_signal_data(s->event, &s->priority, s->signal.sig);
+ }
+
+ break;
+
+ case SOURCE_CHILD:
+ if (s->child.pid > 0) {
+ if (s->enabled != SD_EVENT_OFF) {
+ assert(s->event->n_enabled_child_sources > 0);
+ s->event->n_enabled_child_sources--;
+ }
+
+ (void) hashmap_remove(s->event->child_sources, PID_TO_PTR(s->child.pid));
+ event_gc_signal_data(s->event, &s->priority, SIGCHLD);
+ }
+
+ break;
+
+ case SOURCE_DEFER:
+ /* nothing */
+ break;
+
+ case SOURCE_POST:
+ set_remove(s->event->post_sources, s);
+ break;
+
+ case SOURCE_EXIT:
+ prioq_remove(s->event->exit, s, &s->exit.prioq_index);
+ break;
+
+ default:
+ assert_not_reached("Wut? I shouldn't exist.");
+ }
+
+ if (s->pending)
+ prioq_remove(s->event->pending, s, &s->pending_index);
+
+ if (s->prepare)
+ prioq_remove(s->event->prepare, s, &s->prepare_index);
+
+ event = s->event;
+
+ s->type = _SOURCE_EVENT_SOURCE_TYPE_INVALID;
+ s->event = NULL;
+ LIST_REMOVE(sources, event->sources, s);
+ event->n_sources--;
+
+ if (!s->floating)
+ sd_event_unref(event);
+}
+
+static void source_free(sd_event_source *s) {
+ assert(s);
+
+ source_disconnect(s);
+ free(s->description);
+ free(s);
+}
+
+static int source_set_pending(sd_event_source *s, bool b) {
+ int r;
+
+ assert(s);
+ assert(s->type != SOURCE_EXIT);
+
+ if (s->pending == b)
+ return 0;
+
+ s->pending = b;
+
+ if (b) {
+ s->pending_iteration = s->event->iteration;
+
+ r = prioq_put(s->event->pending, s, &s->pending_index);
+ if (r < 0) {
+ s->pending = false;
+ return r;
+ }
+ } else
+ assert_se(prioq_remove(s->event->pending, s, &s->pending_index));
+
+ if (EVENT_SOURCE_IS_TIME(s->type)) {
+ struct clock_data *d;
+
+ d = event_get_clock_data(s->event, s->type);
+ assert(d);
+
+ prioq_reshuffle(d->earliest, s, &s->time.earliest_index);
+ prioq_reshuffle(d->latest, s, &s->time.latest_index);
+ d->needs_rearm = true;
+ }
+
+ if (s->type == SOURCE_SIGNAL && !b) {
+ struct signal_data *d;
+
+ d = hashmap_get(s->event->signal_data, &s->priority);
+ if (d && d->current == s)
+ d->current = NULL;
+ }
+
+ return 0;
+}
+
+static sd_event_source *source_new(sd_event *e, bool floating, EventSourceType type) {
+ sd_event_source *s;
+
+ assert(e);
+
+ s = new0(sd_event_source, 1);
+ if (!s)
+ return NULL;
+
+ s->n_ref = 1;
+ s->event = e;
+ s->floating = floating;
+ s->type = type;
+ s->pending_index = s->prepare_index = PRIOQ_IDX_NULL;
+
+ if (!floating)
+ sd_event_ref(e);
+
+ LIST_PREPEND(sources, e->sources, s);
+ e->n_sources++;
+
+ return s;
+}
+
+_public_ int sd_event_add_io(
+ sd_event *e,
+ sd_event_source **ret,
+ int fd,
+ uint32_t events,
+ sd_event_io_handler_t callback,
+ void *userdata) {
+
+ sd_event_source *s;
+ int r;
+
+ assert_return(e, -EINVAL);
+ assert_return(fd >= 0, -EBADF);
+ assert_return(!(events & ~(EPOLLIN|EPOLLOUT|EPOLLRDHUP|EPOLLPRI|EPOLLERR|EPOLLHUP|EPOLLET)), -EINVAL);
+ assert_return(callback, -EINVAL);
+ assert_return(e->state != SD_EVENT_FINISHED, -ESTALE);
+ assert_return(!event_pid_changed(e), -ECHILD);
+
+ s = source_new(e, !ret, SOURCE_IO);
+ if (!s)
+ return -ENOMEM;
+
+ s->wakeup = WAKEUP_EVENT_SOURCE;
+ s->io.fd = fd;
+ s->io.events = events;
+ s->io.callback = callback;
+ s->userdata = userdata;
+ s->enabled = SD_EVENT_ON;
+
+ r = source_io_register(s, s->enabled, events);
+ if (r < 0) {
+ source_free(s);
+ return r;
+ }
+
+ if (ret)
+ *ret = s;
+
+ return 0;
+}
+
+static void initialize_perturb(sd_event *e) {
+ sd_id128_t bootid = {};
+
+ /* When we sleep for longer, we try to realign the wakeup to
+ the same time wihtin each minute/second/250ms, so that
+ events all across the system can be coalesced into a single
+ CPU wakeup. However, let's take some system-specific
+ randomness for this value, so that in a network of systems
+ with synced clocks timer events are distributed a
+ bit. Here, we calculate a perturbation usec offset from the
+ boot ID. */
+
+ if (_likely_(e->perturb != USEC_INFINITY))
+ return;
+
+ if (sd_id128_get_boot(&bootid) >= 0)
+ e->perturb = (bootid.qwords[0] ^ bootid.qwords[1]) % USEC_PER_MINUTE;
+}
+
+static int event_setup_timer_fd(
+ sd_event *e,
+ struct clock_data *d,
+ clockid_t clock) {
+
+ struct epoll_event ev = {};
+ int r, fd;
+
+ assert(e);
+ assert(d);
+
+ if (_likely_(d->fd >= 0))
+ return 0;
+
+ fd = timerfd_create(clock, TFD_NONBLOCK|TFD_CLOEXEC);
+ if (fd < 0)
+ return -errno;
+
+ ev.events = EPOLLIN;
+ ev.data.ptr = d;
+
+ r = epoll_ctl(e->epoll_fd, EPOLL_CTL_ADD, fd, &ev);
+ if (r < 0) {
+ safe_close(fd);
+ return -errno;
+ }
+
+ d->fd = fd;
+ return 0;
+}
+
+static int time_exit_callback(sd_event_source *s, uint64_t usec, void *userdata) {
+ assert(s);
+
+ return sd_event_exit(sd_event_source_get_event(s), PTR_TO_INT(userdata));
+}
+
+_public_ int sd_event_add_time(
+ sd_event *e,
+ sd_event_source **ret,
+ clockid_t clock,
+ uint64_t usec,
+ uint64_t accuracy,
+ sd_event_time_handler_t callback,
+ void *userdata) {
+
+ EventSourceType type;
+ sd_event_source *s;
+ struct clock_data *d;
+ int r;
+
+ assert_return(e, -EINVAL);
+ assert_return(accuracy != (uint64_t) -1, -EINVAL);
+ assert_return(e->state != SD_EVENT_FINISHED, -ESTALE);
+ assert_return(!event_pid_changed(e), -ECHILD);
+
+ if (IN_SET(clock, CLOCK_BOOTTIME, CLOCK_BOOTTIME_ALARM) &&
+ !clock_boottime_supported())
+ return -EOPNOTSUPP;
+
+ if (!callback)
+ callback = time_exit_callback;
+
+ type = clock_to_event_source_type(clock);
+ assert_return(type >= 0, -EOPNOTSUPP);
+
+ d = event_get_clock_data(e, type);
+ assert(d);
+
+ r = prioq_ensure_allocated(&d->earliest, earliest_time_prioq_compare);
+ if (r < 0)
+ return r;
+
+ r = prioq_ensure_allocated(&d->latest, latest_time_prioq_compare);
+ if (r < 0)
+ return r;
+
+ if (d->fd < 0) {
+ r = event_setup_timer_fd(e, d, clock);
+ if (r < 0)
+ return r;
+ }
+
+ s = source_new(e, !ret, type);
+ if (!s)
+ return -ENOMEM;
+
+ s->time.next = usec;
+ s->time.accuracy = accuracy == 0 ? DEFAULT_ACCURACY_USEC : accuracy;
+ s->time.callback = callback;
+ s->time.earliest_index = s->time.latest_index = PRIOQ_IDX_NULL;
+ s->userdata = userdata;
+ s->enabled = SD_EVENT_ONESHOT;
+
+ d->needs_rearm = true;
+
+ r = prioq_put(d->earliest, s, &s->time.earliest_index);
+ if (r < 0)
+ goto fail;
+
+ r = prioq_put(d->latest, s, &s->time.latest_index);
+ if (r < 0)
+ goto fail;
+
+ if (ret)
+ *ret = s;
+
+ return 0;
+
+fail:
+ source_free(s);
+ return r;
+}
+
+static int signal_exit_callback(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) {
+ assert(s);
+
+ return sd_event_exit(sd_event_source_get_event(s), PTR_TO_INT(userdata));
+}
+
+_public_ int sd_event_add_signal(
+ sd_event *e,
+ sd_event_source **ret,
+ int sig,
+ sd_event_signal_handler_t callback,
+ void *userdata) {
+
+ sd_event_source *s;
+ struct signal_data *d;
+ sigset_t ss;
+ int r;
+
+ assert_return(e, -EINVAL);
+ assert_return(SIGNAL_VALID(sig), -EINVAL);
+ assert_return(e->state != SD_EVENT_FINISHED, -ESTALE);
+ assert_return(!event_pid_changed(e), -ECHILD);
+
+ if (!callback)
+ callback = signal_exit_callback;
+
+ r = pthread_sigmask(SIG_SETMASK, NULL, &ss);
+ if (r != 0)
+ return -r;
+
+ if (!sigismember(&ss, sig))
+ return -EBUSY;
+
+ if (!e->signal_sources) {
+ e->signal_sources = new0(sd_event_source*, _NSIG);
+ if (!e->signal_sources)
+ return -ENOMEM;
+ } else if (e->signal_sources[sig])
+ return -EBUSY;
+
+ s = source_new(e, !ret, SOURCE_SIGNAL);
+ if (!s)
+ return -ENOMEM;
+
+ s->signal.sig = sig;
+ s->signal.callback = callback;
+ s->userdata = userdata;
+ s->enabled = SD_EVENT_ON;
+
+ e->signal_sources[sig] = s;
+
+ r = event_make_signal_data(e, sig, &d);
+ if (r < 0) {
+ source_free(s);
+ return r;
+ }
+
+ /* Use the signal name as description for the event source by default */
+ (void) sd_event_source_set_description(s, signal_to_string(sig));
+
+ if (ret)
+ *ret = s;
+
+ return 0;
+}
+
+_public_ int sd_event_add_child(
+ sd_event *e,
+ sd_event_source **ret,
+ pid_t pid,
+ int options,
+ sd_event_child_handler_t callback,
+ void *userdata) {
+
+ sd_event_source *s;
+ int r;
+
+ assert_return(e, -EINVAL);
+ assert_return(pid > 1, -EINVAL);
+ assert_return(!(options & ~(WEXITED|WSTOPPED|WCONTINUED)), -EINVAL);
+ assert_return(options != 0, -EINVAL);
+ assert_return(callback, -EINVAL);
+ assert_return(e->state != SD_EVENT_FINISHED, -ESTALE);
+ assert_return(!event_pid_changed(e), -ECHILD);
+
+ r = hashmap_ensure_allocated(&e->child_sources, NULL);
+ if (r < 0)
+ return r;
+
+ if (hashmap_contains(e->child_sources, PID_TO_PTR(pid)))
+ return -EBUSY;
+
+ s = source_new(e, !ret, SOURCE_CHILD);
+ if (!s)
+ return -ENOMEM;
+
+ s->child.pid = pid;
+ s->child.options = options;
+ s->child.callback = callback;
+ s->userdata = userdata;
+ s->enabled = SD_EVENT_ONESHOT;
+
+ r = hashmap_put(e->child_sources, PID_TO_PTR(pid), s);
+ if (r < 0) {
+ source_free(s);
+ return r;
+ }
+
+ e->n_enabled_child_sources++;
+
+ r = event_make_signal_data(e, SIGCHLD, NULL);
+ if (r < 0) {
+ e->n_enabled_child_sources--;
+ source_free(s);
+ return r;
+ }
+
+ e->need_process_child = true;
+
+ if (ret)
+ *ret = s;
+
+ return 0;
+}
+
+_public_ int sd_event_add_defer(
+ sd_event *e,
+ sd_event_source **ret,
+ sd_event_handler_t callback,
+ void *userdata) {
+
+ sd_event_source *s;
+ int r;
+
+ assert_return(e, -EINVAL);
+ assert_return(callback, -EINVAL);
+ assert_return(e->state != SD_EVENT_FINISHED, -ESTALE);
+ assert_return(!event_pid_changed(e), -ECHILD);
+
+ s = source_new(e, !ret, SOURCE_DEFER);
+ if (!s)
+ return -ENOMEM;
+
+ s->defer.callback = callback;
+ s->userdata = userdata;
+ s->enabled = SD_EVENT_ONESHOT;
+
+ r = source_set_pending(s, true);
+ if (r < 0) {
+ source_free(s);
+ return r;
+ }
+
+ if (ret)
+ *ret = s;
+
+ return 0;
+}
+
+_public_ int sd_event_add_post(
+ sd_event *e,
+ sd_event_source **ret,
+ sd_event_handler_t callback,
+ void *userdata) {
+
+ sd_event_source *s;
+ int r;
+
+ assert_return(e, -EINVAL);
+ assert_return(callback, -EINVAL);
+ assert_return(e->state != SD_EVENT_FINISHED, -ESTALE);
+ assert_return(!event_pid_changed(e), -ECHILD);
+
+ r = set_ensure_allocated(&e->post_sources, NULL);
+ if (r < 0)
+ return r;
+
+ s = source_new(e, !ret, SOURCE_POST);
+ if (!s)
+ return -ENOMEM;
+
+ s->post.callback = callback;
+ s->userdata = userdata;
+ s->enabled = SD_EVENT_ON;
+
+ r = set_put(e->post_sources, s);
+ if (r < 0) {
+ source_free(s);
+ return r;
+ }
+
+ if (ret)
+ *ret = s;
+
+ return 0;
+}
+
+_public_ int sd_event_add_exit(
+ sd_event *e,
+ sd_event_source **ret,
+ sd_event_handler_t callback,
+ void *userdata) {
+
+ sd_event_source *s;
+ int r;
+
+ assert_return(e, -EINVAL);
+ assert_return(callback, -EINVAL);
+ assert_return(e->state != SD_EVENT_FINISHED, -ESTALE);
+ assert_return(!event_pid_changed(e), -ECHILD);
+
+ r = prioq_ensure_allocated(&e->exit, exit_prioq_compare);
+ if (r < 0)
+ return r;
+
+ s = source_new(e, !ret, SOURCE_EXIT);
+ if (!s)
+ return -ENOMEM;
+
+ s->exit.callback = callback;
+ s->userdata = userdata;
+ s->exit.prioq_index = PRIOQ_IDX_NULL;
+ s->enabled = SD_EVENT_ONESHOT;
+
+ r = prioq_put(s->event->exit, s, &s->exit.prioq_index);
+ if (r < 0) {
+ source_free(s);
+ return r;
+ }
+
+ if (ret)
+ *ret = s;
+
+ return 0;
+}
+
+_public_ sd_event_source* sd_event_source_ref(sd_event_source *s) {
+
+ if (!s)
+ return NULL;
+
+ assert(s->n_ref >= 1);
+ s->n_ref++;
+
+ return s;
+}
+
+_public_ sd_event_source* sd_event_source_unref(sd_event_source *s) {
+
+ if (!s)
+ return NULL;
+
+ assert(s->n_ref >= 1);
+ s->n_ref--;
+
+ if (s->n_ref <= 0) {
+ /* Here's a special hack: when we are called from a
+ * dispatch handler we won't free the event source
+ * immediately, but we will detach the fd from the
+ * epoll. This way it is safe for the caller to unref
+ * the event source and immediately close the fd, but
+ * we still retain a valid event source object after
+ * the callback. */
+
+ if (s->dispatching) {
+ if (s->type == SOURCE_IO)
+ source_io_unregister(s);
+
+ source_disconnect(s);
+ } else
+ source_free(s);
+ }
+
+ return NULL;
+}
+
+_public_ int sd_event_source_set_description(sd_event_source *s, const char *description) {
+ assert_return(s, -EINVAL);
+ assert_return(!event_pid_changed(s->event), -ECHILD);
+
+ return free_and_strdup(&s->description, description);
+}
+
+_public_ int sd_event_source_get_description(sd_event_source *s, const char **description) {
+ assert_return(s, -EINVAL);
+ assert_return(description, -EINVAL);
+ assert_return(s->description, -ENXIO);
+ assert_return(!event_pid_changed(s->event), -ECHILD);
+
+ *description = s->description;
+ return 0;
+}
+
+_public_ sd_event *sd_event_source_get_event(sd_event_source *s) {
+ assert_return(s, NULL);
+
+ return s->event;
+}
+
+_public_ int sd_event_source_get_pending(sd_event_source *s) {
+ assert_return(s, -EINVAL);
+ assert_return(s->type != SOURCE_EXIT, -EDOM);
+ assert_return(s->event->state != SD_EVENT_FINISHED, -ESTALE);
+ assert_return(!event_pid_changed(s->event), -ECHILD);
+
+ return s->pending;
+}
+
+_public_ int sd_event_source_get_io_fd(sd_event_source *s) {
+ assert_return(s, -EINVAL);
+ assert_return(s->type == SOURCE_IO, -EDOM);
+ assert_return(!event_pid_changed(s->event), -ECHILD);
+
+ return s->io.fd;
+}
+
+_public_ int sd_event_source_set_io_fd(sd_event_source *s, int fd) {
+ int r;
+
+ assert_return(s, -EINVAL);
+ assert_return(fd >= 0, -EBADF);
+ assert_return(s->type == SOURCE_IO, -EDOM);
+ assert_return(!event_pid_changed(s->event), -ECHILD);
+
+ if (s->io.fd == fd)
+ return 0;
+
+ if (s->enabled == SD_EVENT_OFF) {
+ s->io.fd = fd;
+ s->io.registered = false;
+ } else {
+ int saved_fd;
+
+ saved_fd = s->io.fd;
+ assert(s->io.registered);
+
+ s->io.fd = fd;
+ s->io.registered = false;
+
+ r = source_io_register(s, s->enabled, s->io.events);
+ if (r < 0) {
+ s->io.fd = saved_fd;
+ s->io.registered = true;
+ return r;
+ }
+
+ epoll_ctl(s->event->epoll_fd, EPOLL_CTL_DEL, saved_fd, NULL);
+ }
+
+ return 0;
+}
+
+_public_ int sd_event_source_get_io_events(sd_event_source *s, uint32_t* events) {
+ assert_return(s, -EINVAL);
+ assert_return(events, -EINVAL);
+ assert_return(s->type == SOURCE_IO, -EDOM);
+ assert_return(!event_pid_changed(s->event), -ECHILD);
+
+ *events = s->io.events;
+ return 0;
+}
+
+_public_ int sd_event_source_set_io_events(sd_event_source *s, uint32_t events) {
+ int r;
+
+ assert_return(s, -EINVAL);
+ assert_return(s->type == SOURCE_IO, -EDOM);
+ assert_return(!(events & ~(EPOLLIN|EPOLLOUT|EPOLLRDHUP|EPOLLPRI|EPOLLERR|EPOLLHUP|EPOLLET)), -EINVAL);
+ assert_return(s->event->state != SD_EVENT_FINISHED, -ESTALE);
+ assert_return(!event_pid_changed(s->event), -ECHILD);
+
+ /* edge-triggered updates are never skipped, so we can reset edges */
+ if (s->io.events == events && !(events & EPOLLET))
+ return 0;
+
+ if (s->enabled != SD_EVENT_OFF) {
+ r = source_io_register(s, s->enabled, events);
+ if (r < 0)
+ return r;
+ }
+
+ s->io.events = events;
+ source_set_pending(s, false);
+
+ return 0;
+}
+
+_public_ int sd_event_source_get_io_revents(sd_event_source *s, uint32_t* revents) {
+ assert_return(s, -EINVAL);
+ assert_return(revents, -EINVAL);
+ assert_return(s->type == SOURCE_IO, -EDOM);
+ assert_return(s->pending, -ENODATA);
+ assert_return(!event_pid_changed(s->event), -ECHILD);
+
+ *revents = s->io.revents;
+ return 0;
+}
+
+_public_ int sd_event_source_get_signal(sd_event_source *s) {
+ assert_return(s, -EINVAL);
+ assert_return(s->type == SOURCE_SIGNAL, -EDOM);
+ assert_return(!event_pid_changed(s->event), -ECHILD);
+
+ return s->signal.sig;
+}
+
+_public_ int sd_event_source_get_priority(sd_event_source *s, int64_t *priority) {
+ assert_return(s, -EINVAL);
+ assert_return(!event_pid_changed(s->event), -ECHILD);
+
+ return s->priority;
+}
+
+_public_ int sd_event_source_set_priority(sd_event_source *s, int64_t priority) {
+ int r;
+
+ assert_return(s, -EINVAL);
+ assert_return(s->event->state != SD_EVENT_FINISHED, -ESTALE);
+ assert_return(!event_pid_changed(s->event), -ECHILD);
+
+ if (s->priority == priority)
+ return 0;
+
+ if (s->type == SOURCE_SIGNAL && s->enabled != SD_EVENT_OFF) {
+ struct signal_data *old, *d;
+
+ /* Move us from the signalfd belonging to the old
+ * priority to the signalfd of the new priority */
+
+ assert_se(old = hashmap_get(s->event->signal_data, &s->priority));
+
+ s->priority = priority;
+
+ r = event_make_signal_data(s->event, s->signal.sig, &d);
+ if (r < 0) {
+ s->priority = old->priority;
+ return r;
+ }
+
+ event_unmask_signal_data(s->event, old, s->signal.sig);
+ } else
+ s->priority = priority;
+
+ if (s->pending)
+ prioq_reshuffle(s->event->pending, s, &s->pending_index);
+
+ if (s->prepare)
+ prioq_reshuffle(s->event->prepare, s, &s->prepare_index);
+
+ if (s->type == SOURCE_EXIT)
+ prioq_reshuffle(s->event->exit, s, &s->exit.prioq_index);
+
+ return 0;
+}
+
+_public_ int sd_event_source_get_enabled(sd_event_source *s, int *m) {
+ assert_return(s, -EINVAL);
+ assert_return(m, -EINVAL);
+ assert_return(!event_pid_changed(s->event), -ECHILD);
+
+ *m = s->enabled;
+ return 0;
+}
+
+_public_ int sd_event_source_set_enabled(sd_event_source *s, int m) {
+ int r;
+
+ assert_return(s, -EINVAL);
+ assert_return(m == SD_EVENT_OFF || m == SD_EVENT_ON || m == SD_EVENT_ONESHOT, -EINVAL);
+ assert_return(!event_pid_changed(s->event), -ECHILD);
+
+ /* If we are dead anyway, we are fine with turning off
+ * sources, but everything else needs to fail. */
+ if (s->event->state == SD_EVENT_FINISHED)
+ return m == SD_EVENT_OFF ? 0 : -ESTALE;
+
+ if (s->enabled == m)
+ return 0;
+
+ if (m == SD_EVENT_OFF) {
+
+ switch (s->type) {
+
+ case SOURCE_IO:
+ source_io_unregister(s);
+ s->enabled = m;
+ break;
+
+ case SOURCE_TIME_REALTIME:
+ case SOURCE_TIME_BOOTTIME:
+ case SOURCE_TIME_MONOTONIC:
+ case SOURCE_TIME_REALTIME_ALARM:
+ case SOURCE_TIME_BOOTTIME_ALARM: {
+ struct clock_data *d;
+
+ s->enabled = m;
+ d = event_get_clock_data(s->event, s->type);
+ assert(d);
+
+ prioq_reshuffle(d->earliest, s, &s->time.earliest_index);
+ prioq_reshuffle(d->latest, s, &s->time.latest_index);
+ d->needs_rearm = true;
+ break;
+ }
+
+ case SOURCE_SIGNAL:
+ s->enabled = m;
+
+ event_gc_signal_data(s->event, &s->priority, s->signal.sig);
+ break;
+
+ case SOURCE_CHILD:
+ s->enabled = m;
+
+ assert(s->event->n_enabled_child_sources > 0);
+ s->event->n_enabled_child_sources--;
+
+ event_gc_signal_data(s->event, &s->priority, SIGCHLD);
+ break;
+
+ case SOURCE_EXIT:
+ s->enabled = m;
+ prioq_reshuffle(s->event->exit, s, &s->exit.prioq_index);
+ break;
+
+ case SOURCE_DEFER:
+ case SOURCE_POST:
+ s->enabled = m;
+ break;
+
+ default:
+ assert_not_reached("Wut? I shouldn't exist.");
+ }
+
+ } else {
+ switch (s->type) {
+
+ case SOURCE_IO:
+ r = source_io_register(s, m, s->io.events);
+ if (r < 0)
+ return r;
+
+ s->enabled = m;
+ break;
+
+ case SOURCE_TIME_REALTIME:
+ case SOURCE_TIME_BOOTTIME:
+ case SOURCE_TIME_MONOTONIC:
+ case SOURCE_TIME_REALTIME_ALARM:
+ case SOURCE_TIME_BOOTTIME_ALARM: {
+ struct clock_data *d;
+
+ s->enabled = m;
+ d = event_get_clock_data(s->event, s->type);
+ assert(d);
+
+ prioq_reshuffle(d->earliest, s, &s->time.earliest_index);
+ prioq_reshuffle(d->latest, s, &s->time.latest_index);
+ d->needs_rearm = true;
+ break;
+ }
+
+ case SOURCE_SIGNAL:
+
+ s->enabled = m;
+
+ r = event_make_signal_data(s->event, s->signal.sig, NULL);
+ if (r < 0) {
+ s->enabled = SD_EVENT_OFF;
+ event_gc_signal_data(s->event, &s->priority, s->signal.sig);
+ return r;
+ }
+
+ break;
+
+ case SOURCE_CHILD:
+
+ if (s->enabled == SD_EVENT_OFF)
+ s->event->n_enabled_child_sources++;
+
+ s->enabled = m;
+
+ r = event_make_signal_data(s->event, SIGCHLD, NULL);
+ if (r < 0) {
+ s->enabled = SD_EVENT_OFF;
+ s->event->n_enabled_child_sources--;
+ event_gc_signal_data(s->event, &s->priority, SIGCHLD);
+ return r;
+ }
+
+ break;
+
+ case SOURCE_EXIT:
+ s->enabled = m;
+ prioq_reshuffle(s->event->exit, s, &s->exit.prioq_index);
+ break;
+
+ case SOURCE_DEFER:
+ case SOURCE_POST:
+ s->enabled = m;
+ break;
+
+ default:
+ assert_not_reached("Wut? I shouldn't exist.");
+ }
+ }
+
+ if (s->pending)
+ prioq_reshuffle(s->event->pending, s, &s->pending_index);
+
+ if (s->prepare)
+ prioq_reshuffle(s->event->prepare, s, &s->prepare_index);
+
+ return 0;
+}
+
+_public_ int sd_event_source_get_time(sd_event_source *s, uint64_t *usec) {
+ assert_return(s, -EINVAL);
+ assert_return(usec, -EINVAL);
+ assert_return(EVENT_SOURCE_IS_TIME(s->type), -EDOM);
+ assert_return(!event_pid_changed(s->event), -ECHILD);
+
+ *usec = s->time.next;
+ return 0;
+}
+
+_public_ int sd_event_source_set_time(sd_event_source *s, uint64_t usec) {
+ struct clock_data *d;
+
+ assert_return(s, -EINVAL);
+ assert_return(EVENT_SOURCE_IS_TIME(s->type), -EDOM);
+ assert_return(s->event->state != SD_EVENT_FINISHED, -ESTALE);
+ assert_return(!event_pid_changed(s->event), -ECHILD);
+
+ s->time.next = usec;
+
+ source_set_pending(s, false);
+
+ d = event_get_clock_data(s->event, s->type);
+ assert(d);
+
+ prioq_reshuffle(d->earliest, s, &s->time.earliest_index);
+ prioq_reshuffle(d->latest, s, &s->time.latest_index);
+ d->needs_rearm = true;
+
+ return 0;
+}
+
+_public_ int sd_event_source_get_time_accuracy(sd_event_source *s, uint64_t *usec) {
+ assert_return(s, -EINVAL);
+ assert_return(usec, -EINVAL);
+ assert_return(EVENT_SOURCE_IS_TIME(s->type), -EDOM);
+ assert_return(!event_pid_changed(s->event), -ECHILD);
+
+ *usec = s->time.accuracy;
+ return 0;
+}
+
+_public_ int sd_event_source_set_time_accuracy(sd_event_source *s, uint64_t usec) {
+ struct clock_data *d;
+
+ assert_return(s, -EINVAL);
+ assert_return(usec != (uint64_t) -1, -EINVAL);
+ assert_return(EVENT_SOURCE_IS_TIME(s->type), -EDOM);
+ assert_return(s->event->state != SD_EVENT_FINISHED, -ESTALE);
+ assert_return(!event_pid_changed(s->event), -ECHILD);
+
+ if (usec == 0)
+ usec = DEFAULT_ACCURACY_USEC;
+
+ s->time.accuracy = usec;
+
+ source_set_pending(s, false);
+
+ d = event_get_clock_data(s->event, s->type);
+ assert(d);
+
+ prioq_reshuffle(d->latest, s, &s->time.latest_index);
+ d->needs_rearm = true;
+
+ return 0;
+}
+
+_public_ int sd_event_source_get_time_clock(sd_event_source *s, clockid_t *clock) {
+ assert_return(s, -EINVAL);
+ assert_return(clock, -EINVAL);
+ assert_return(EVENT_SOURCE_IS_TIME(s->type), -EDOM);
+ assert_return(!event_pid_changed(s->event), -ECHILD);
+
+ *clock = event_source_type_to_clock(s->type);
+ return 0;
+}
+
+_public_ int sd_event_source_get_child_pid(sd_event_source *s, pid_t *pid) {
+ assert_return(s, -EINVAL);
+ assert_return(pid, -EINVAL);
+ assert_return(s->type == SOURCE_CHILD, -EDOM);
+ assert_return(!event_pid_changed(s->event), -ECHILD);
+
+ *pid = s->child.pid;
+ return 0;
+}
+
+_public_ int sd_event_source_set_prepare(sd_event_source *s, sd_event_handler_t callback) {
+ int r;
+
+ assert_return(s, -EINVAL);
+ assert_return(s->type != SOURCE_EXIT, -EDOM);
+ assert_return(s->event->state != SD_EVENT_FINISHED, -ESTALE);
+ assert_return(!event_pid_changed(s->event), -ECHILD);
+
+ if (s->prepare == callback)
+ return 0;
+
+ if (callback && s->prepare) {
+ s->prepare = callback;
+ return 0;
+ }
+
+ r = prioq_ensure_allocated(&s->event->prepare, prepare_prioq_compare);
+ if (r < 0)
+ return r;
+
+ s->prepare = callback;
+
+ if (callback) {
+ r = prioq_put(s->event->prepare, s, &s->prepare_index);
+ if (r < 0)
+ return r;
+ } else
+ prioq_remove(s->event->prepare, s, &s->prepare_index);
+
+ return 0;
+}
+
+_public_ void* sd_event_source_get_userdata(sd_event_source *s) {
+ assert_return(s, NULL);
+
+ return s->userdata;
+}
+
+_public_ void *sd_event_source_set_userdata(sd_event_source *s, void *userdata) {
+ void *ret;
+
+ assert_return(s, NULL);
+
+ ret = s->userdata;
+ s->userdata = userdata;
+
+ return ret;
+}
+
+static usec_t sleep_between(sd_event *e, usec_t a, usec_t b) {
+ usec_t c;
+ assert(e);
+ assert(a <= b);
+
+ if (a <= 0)
+ return 0;
+ if (a >= USEC_INFINITY)
+ return USEC_INFINITY;
+
+ if (b <= a + 1)
+ return a;
+
+ initialize_perturb(e);
+
+ /*
+ Find a good time to wake up again between times a and b. We
+ have two goals here:
+
+ a) We want to wake up as seldom as possible, hence prefer
+ later times over earlier times.
+
+ b) But if we have to wake up, then let's make sure to
+ dispatch as much as possible on the entire system.
+
+ We implement this by waking up everywhere at the same time
+ within any given minute if we can, synchronised via the
+ perturbation value determined from the boot ID. If we can't,
+ then we try to find the same spot in every 10s, then 1s and
+ then 250ms step. Otherwise, we pick the last possible time
+ to wake up.
+ */
+
+ c = (b / USEC_PER_MINUTE) * USEC_PER_MINUTE + e->perturb;
+ if (c >= b) {
+ if (_unlikely_(c < USEC_PER_MINUTE))
+ return b;
+
+ c -= USEC_PER_MINUTE;
+ }
+
+ if (c >= a)
+ return c;
+
+ c = (b / (USEC_PER_SEC*10)) * (USEC_PER_SEC*10) + (e->perturb % (USEC_PER_SEC*10));
+ if (c >= b) {
+ if (_unlikely_(c < USEC_PER_SEC*10))
+ return b;
+
+ c -= USEC_PER_SEC*10;
+ }
+
+ if (c >= a)
+ return c;
+
+ c = (b / USEC_PER_SEC) * USEC_PER_SEC + (e->perturb % USEC_PER_SEC);
+ if (c >= b) {
+ if (_unlikely_(c < USEC_PER_SEC))
+ return b;
+
+ c -= USEC_PER_SEC;
+ }
+
+ if (c >= a)
+ return c;
+
+ c = (b / (USEC_PER_MSEC*250)) * (USEC_PER_MSEC*250) + (e->perturb % (USEC_PER_MSEC*250));
+ if (c >= b) {
+ if (_unlikely_(c < USEC_PER_MSEC*250))
+ return b;
+
+ c -= USEC_PER_MSEC*250;
+ }
+
+ if (c >= a)
+ return c;
+
+ return b;
+}
+
+static int event_arm_timer(
+ sd_event *e,
+ struct clock_data *d) {
+
+ struct itimerspec its = {};
+ sd_event_source *a, *b;
+ usec_t t;
+ int r;
+
+ assert(e);
+ assert(d);
+
+ if (!d->needs_rearm)
+ return 0;
+ else
+ d->needs_rearm = false;
+
+ a = prioq_peek(d->earliest);
+ if (!a || a->enabled == SD_EVENT_OFF || a->time.next == USEC_INFINITY) {
+
+ if (d->fd < 0)
+ return 0;
+
+ if (d->next == USEC_INFINITY)
+ return 0;
+
+ /* disarm */
+ r = timerfd_settime(d->fd, TFD_TIMER_ABSTIME, &its, NULL);
+ if (r < 0)
+ return r;
+
+ d->next = USEC_INFINITY;
+ return 0;
+ }
+
+ b = prioq_peek(d->latest);
+ assert_se(b && b->enabled != SD_EVENT_OFF);
+
+ t = sleep_between(e, a->time.next, time_event_source_latest(b));
+ if (d->next == t)
+ return 0;
+
+ assert_se(d->fd >= 0);
+
+ if (t == 0) {
+ /* We don' want to disarm here, just mean some time looooong ago. */
+ its.it_value.tv_sec = 0;
+ its.it_value.tv_nsec = 1;
+ } else
+ timespec_store(&its.it_value, t);
+
+ r = timerfd_settime(d->fd, TFD_TIMER_ABSTIME, &its, NULL);
+ if (r < 0)
+ return -errno;
+
+ d->next = t;
+ return 0;
+}
+
+static int process_io(sd_event *e, sd_event_source *s, uint32_t revents) {
+ assert(e);
+ assert(s);
+ assert(s->type == SOURCE_IO);
+
+ /* If the event source was already pending, we just OR in the
+ * new revents, otherwise we reset the value. The ORing is
+ * necessary to handle EPOLLONESHOT events properly where
+ * readability might happen independently of writability, and
+ * we need to keep track of both */
+
+ if (s->pending)
+ s->io.revents |= revents;
+ else
+ s->io.revents = revents;
+
+ return source_set_pending(s, true);
+}
+
+static int flush_timer(sd_event *e, int fd, uint32_t events, usec_t *next) {
+ uint64_t x;
+ ssize_t ss;
+
+ assert(e);
+ assert(fd >= 0);
+
+ assert_return(events == EPOLLIN, -EIO);
+
+ ss = read(fd, &x, sizeof(x));
+ if (ss < 0) {
+ if (errno == EAGAIN || errno == EINTR)
+ return 0;
+
+ return -errno;
+ }
+
+ if (_unlikely_(ss != sizeof(x)))
+ return -EIO;
+
+ if (next)
+ *next = USEC_INFINITY;
+
+ return 0;
+}
+
+static int process_timer(
+ sd_event *e,
+ usec_t n,
+ struct clock_data *d) {
+
+ sd_event_source *s;
+ int r;
+
+ assert(e);
+ assert(d);
+
+ for (;;) {
+ s = prioq_peek(d->earliest);
+ if (!s ||
+ s->time.next > n ||
+ s->enabled == SD_EVENT_OFF ||
+ s->pending)
+ break;
+
+ r = source_set_pending(s, true);
+ if (r < 0)
+ return r;
+
+ prioq_reshuffle(d->earliest, s, &s->time.earliest_index);
+ prioq_reshuffle(d->latest, s, &s->time.latest_index);
+ d->needs_rearm = true;
+ }
+
+ return 0;
+}
+
+static int process_child(sd_event *e) {
+ sd_event_source *s;
+ Iterator i;
+ int r;
+
+ assert(e);
+
+ e->need_process_child = false;
+
+ /*
+ So, this is ugly. We iteratively invoke waitid() with P_PID
+ + WNOHANG for each PID we wait for, instead of using
+ P_ALL. This is because we only want to get child
+ information of very specific child processes, and not all
+ of them. We might not have processed the SIGCHLD even of a
+ previous invocation and we don't want to maintain a
+ unbounded *per-child* event queue, hence we really don't
+ want anything flushed out of the kernel's queue that we
+ don't care about. Since this is O(n) this means that if you
+ have a lot of processes you probably want to handle SIGCHLD
+ yourself.
+
+ We do not reap the children here (by using WNOWAIT), this
+ is only done after the event source is dispatched so that
+ the callback still sees the process as a zombie.
+ */
+
+ HASHMAP_FOREACH(s, e->child_sources, i) {
+ assert(s->type == SOURCE_CHILD);
+
+ if (s->pending)
+ continue;
+
+ if (s->enabled == SD_EVENT_OFF)
+ continue;
+
+ zero(s->child.siginfo);
+ r = waitid(P_PID, s->child.pid, &s->child.siginfo,
+ WNOHANG | (s->child.options & WEXITED ? WNOWAIT : 0) | s->child.options);
+ if (r < 0)
+ return -errno;
+
+ if (s->child.siginfo.si_pid != 0) {
+ bool zombie =
+ s->child.siginfo.si_code == CLD_EXITED ||
+ s->child.siginfo.si_code == CLD_KILLED ||
+ s->child.siginfo.si_code == CLD_DUMPED;
+
+ if (!zombie && (s->child.options & WEXITED)) {
+ /* If the child isn't dead then let's
+ * immediately remove the state change
+ * from the queue, since there's no
+ * benefit in leaving it queued */
+
+ assert(s->child.options & (WSTOPPED|WCONTINUED));
+ waitid(P_PID, s->child.pid, &s->child.siginfo, WNOHANG|(s->child.options & (WSTOPPED|WCONTINUED)));
+ }
+
+ r = source_set_pending(s, true);
+ if (r < 0)
+ return r;
+ }
+ }
+
+ return 0;
+}
+
+static int process_signal(sd_event *e, struct signal_data *d, uint32_t events) {
+ bool read_one = false;
+ int r;
+
+ assert(e);
+ assert_return(events == EPOLLIN, -EIO);
+
+ /* If there's a signal queued on this priority and SIGCHLD is
+ on this priority too, then make sure to recheck the
+ children we watch. This is because we only ever dequeue
+ the first signal per priority, and if we dequeue one, and
+ SIGCHLD might be enqueued later we wouldn't know, but we
+ might have higher priority children we care about hence we
+ need to check that explicitly. */
+
+ if (sigismember(&d->sigset, SIGCHLD))
+ e->need_process_child = true;
+
+ /* If there's already an event source pending for this
+ * priority we don't read another */
+ if (d->current)
+ return 0;
+
+ for (;;) {
+ struct signalfd_siginfo si;
+ ssize_t n;
+ sd_event_source *s = NULL;
+
+ n = read(d->fd, &si, sizeof(si));
+ if (n < 0) {
+ if (errno == EAGAIN || errno == EINTR)
+ return read_one;
+
+ return -errno;
+ }
+
+ if (_unlikely_(n != sizeof(si)))
+ return -EIO;
+
+ assert(SIGNAL_VALID(si.ssi_signo));
+
+ read_one = true;
+
+ if (e->signal_sources)
+ s = e->signal_sources[si.ssi_signo];
+ if (!s)
+ continue;
+ if (s->pending)
+ continue;
+
+ s->signal.siginfo = si;
+ d->current = s;
+
+ r = source_set_pending(s, true);
+ if (r < 0)
+ return r;
+
+ return 1;
+ }
+}
+
+static int source_dispatch(sd_event_source *s) {
+ int r = 0;
+
+ assert(s);
+ assert(s->pending || s->type == SOURCE_EXIT);
+
+ if (s->type != SOURCE_DEFER && s->type != SOURCE_EXIT) {
+ r = source_set_pending(s, false);
+ if (r < 0)
+ return r;
+ }
+
+ if (s->type != SOURCE_POST) {
+ sd_event_source *z;
+ Iterator i;
+
+ /* If we execute a non-post source, let's mark all
+ * post sources as pending */
+
+ SET_FOREACH(z, s->event->post_sources, i) {
+ if (z->enabled == SD_EVENT_OFF)
+ continue;
+
+ r = source_set_pending(z, true);
+ if (r < 0)
+ return r;
+ }
+ }
+
+ if (s->enabled == SD_EVENT_ONESHOT) {
+ r = sd_event_source_set_enabled(s, SD_EVENT_OFF);
+ if (r < 0)
+ return r;
+ }
+
+ s->dispatching = true;
+
+ switch (s->type) {
+
+ case SOURCE_IO:
+ r = s->io.callback(s, s->io.fd, s->io.revents, s->userdata);
+ break;
+
+ case SOURCE_TIME_REALTIME:
+ case SOURCE_TIME_BOOTTIME:
+ case SOURCE_TIME_MONOTONIC:
+ case SOURCE_TIME_REALTIME_ALARM:
+ case SOURCE_TIME_BOOTTIME_ALARM:
+ r = s->time.callback(s, s->time.next, s->userdata);
+ break;
+
+ case SOURCE_SIGNAL:
+ r = s->signal.callback(s, &s->signal.siginfo, s->userdata);
+ break;
+
+ case SOURCE_CHILD: {
+ bool zombie;
+
+ zombie = s->child.siginfo.si_code == CLD_EXITED ||
+ s->child.siginfo.si_code == CLD_KILLED ||
+ s->child.siginfo.si_code == CLD_DUMPED;
+
+ r = s->child.callback(s, &s->child.siginfo, s->userdata);
+
+ /* Now, reap the PID for good. */
+ if (zombie)
+ waitid(P_PID, s->child.pid, &s->child.siginfo, WNOHANG|WEXITED);
+
+ break;
+ }
+
+ case SOURCE_DEFER:
+ r = s->defer.callback(s, s->userdata);
+ break;
+
+ case SOURCE_POST:
+ r = s->post.callback(s, s->userdata);
+ break;
+
+ case SOURCE_EXIT:
+ r = s->exit.callback(s, s->userdata);
+ break;
+
+ case SOURCE_WATCHDOG:
+ case _SOURCE_EVENT_SOURCE_TYPE_MAX:
+ case _SOURCE_EVENT_SOURCE_TYPE_INVALID:
+ assert_not_reached("Wut? I shouldn't exist.");
+ }
+
+ s->dispatching = false;
+
+ if (r < 0)
+ log_debug_errno(r, "Event source %s (type %s) returned error, disabling: %m",
+ strna(s->description), event_source_type_to_string(s->type));
+
+ if (s->n_ref == 0)
+ source_free(s);
+ else if (r < 0)
+ sd_event_source_set_enabled(s, SD_EVENT_OFF);
+
+ return 1;
+}
+
+static int event_prepare(sd_event *e) {
+ int r;
+
+ assert(e);
+
+ for (;;) {
+ sd_event_source *s;
+
+ s = prioq_peek(e->prepare);
+ if (!s || s->prepare_iteration == e->iteration || s->enabled == SD_EVENT_OFF)
+ break;
+
+ s->prepare_iteration = e->iteration;
+ r = prioq_reshuffle(e->prepare, s, &s->prepare_index);
+ if (r < 0)
+ return r;
+
+ assert(s->prepare);
+
+ s->dispatching = true;
+ r = s->prepare(s, s->userdata);
+ s->dispatching = false;
+
+ if (r < 0)
+ log_debug_errno(r, "Prepare callback of event source %s (type %s) returned error, disabling: %m",
+ strna(s->description), event_source_type_to_string(s->type));
+
+ if (s->n_ref == 0)
+ source_free(s);
+ else if (r < 0)
+ sd_event_source_set_enabled(s, SD_EVENT_OFF);
+ }
+
+ return 0;
+}
+
+static int dispatch_exit(sd_event *e) {
+ sd_event_source *p;
+ int r;
+
+ assert(e);
+
+ p = prioq_peek(e->exit);
+ if (!p || p->enabled == SD_EVENT_OFF) {
+ e->state = SD_EVENT_FINISHED;
+ return 0;
+ }
+
+ sd_event_ref(e);
+ e->iteration++;
+ e->state = SD_EVENT_EXITING;
+
+ r = source_dispatch(p);
+
+ e->state = SD_EVENT_INITIAL;
+ sd_event_unref(e);
+
+ return r;
+}
+
+static sd_event_source* event_next_pending(sd_event *e) {
+ sd_event_source *p;
+
+ assert(e);
+
+ p = prioq_peek(e->pending);
+ if (!p)
+ return NULL;
+
+ if (p->enabled == SD_EVENT_OFF)
+ return NULL;
+
+ return p;
+}
+
+static int arm_watchdog(sd_event *e) {
+ struct itimerspec its = {};
+ usec_t t;
+ int r;
+
+ assert(e);
+ assert(e->watchdog_fd >= 0);
+
+ t = sleep_between(e,
+ e->watchdog_last + (e->watchdog_period / 2),
+ e->watchdog_last + (e->watchdog_period * 3 / 4));
+
+ timespec_store(&its.it_value, t);
+
+ /* Make sure we never set the watchdog to 0, which tells the
+ * kernel to disable it. */
+ if (its.it_value.tv_sec == 0 && its.it_value.tv_nsec == 0)
+ its.it_value.tv_nsec = 1;
+
+ r = timerfd_settime(e->watchdog_fd, TFD_TIMER_ABSTIME, &its, NULL);
+ if (r < 0)
+ return -errno;
+
+ return 0;
+}
+
+static int process_watchdog(sd_event *e) {
+ assert(e);
+
+ if (!e->watchdog)
+ return 0;
+
+ /* Don't notify watchdog too often */
+ if (e->watchdog_last + e->watchdog_period / 4 > e->timestamp.monotonic)
+ return 0;
+
+ sd_notify(false, "WATCHDOG=1");
+ e->watchdog_last = e->timestamp.monotonic;
+
+ return arm_watchdog(e);
+}
+
+_public_ int sd_event_prepare(sd_event *e) {
+ int r;
+
+ assert_return(e, -EINVAL);
+ assert_return(!event_pid_changed(e), -ECHILD);
+ assert_return(e->state != SD_EVENT_FINISHED, -ESTALE);
+ assert_return(e->state == SD_EVENT_INITIAL, -EBUSY);
+
+ if (e->exit_requested)
+ goto pending;
+
+ e->iteration++;
+
+ e->state = SD_EVENT_PREPARING;
+ r = event_prepare(e);
+ e->state = SD_EVENT_INITIAL;
+ if (r < 0)
+ return r;
+
+ r = event_arm_timer(e, &e->realtime);
+ if (r < 0)
+ return r;
+
+ r = event_arm_timer(e, &e->boottime);
+ if (r < 0)
+ return r;
+
+ r = event_arm_timer(e, &e->monotonic);
+ if (r < 0)
+ return r;
+
+ r = event_arm_timer(e, &e->realtime_alarm);
+ if (r < 0)
+ return r;
+
+ r = event_arm_timer(e, &e->boottime_alarm);
+ if (r < 0)
+ return r;
+
+ if (event_next_pending(e) || e->need_process_child)
+ goto pending;
+
+ e->state = SD_EVENT_ARMED;
+
+ return 0;
+
+pending:
+ e->state = SD_EVENT_ARMED;
+ r = sd_event_wait(e, 0);
+ if (r == 0)
+ e->state = SD_EVENT_ARMED;
+
+ return r;
+}
+
+_public_ int sd_event_wait(sd_event *e, uint64_t timeout) {
+ struct epoll_event *ev_queue;
+ unsigned ev_queue_max;
+ int r, m, i;
+
+ assert_return(e, -EINVAL);
+ assert_return(!event_pid_changed(e), -ECHILD);
+ assert_return(e->state != SD_EVENT_FINISHED, -ESTALE);
+ assert_return(e->state == SD_EVENT_ARMED, -EBUSY);
+
+ if (e->exit_requested) {
+ e->state = SD_EVENT_PENDING;
+ return 1;
+ }
+
+ ev_queue_max = MAX(e->n_sources, 1u);
+ ev_queue = newa(struct epoll_event, ev_queue_max);
+
+ m = epoll_wait(e->epoll_fd, ev_queue, ev_queue_max,
+ timeout == (uint64_t) -1 ? -1 : (int) ((timeout + USEC_PER_MSEC - 1) / USEC_PER_MSEC));
+ if (m < 0) {
+ if (errno == EINTR) {
+ e->state = SD_EVENT_PENDING;
+ return 1;
+ }
+
+ r = -errno;
+ goto finish;
+ }
+
+ dual_timestamp_get(&e->timestamp);
+ if (clock_boottime_supported())
+ e->timestamp_boottime = now(CLOCK_BOOTTIME);
+
+ for (i = 0; i < m; i++) {
+
+ if (ev_queue[i].data.ptr == INT_TO_PTR(SOURCE_WATCHDOG))
+ r = flush_timer(e, e->watchdog_fd, ev_queue[i].events, NULL);
+ else {
+ WakeupType *t = ev_queue[i].data.ptr;
+
+ switch (*t) {
+
+ case WAKEUP_EVENT_SOURCE:
+ r = process_io(e, ev_queue[i].data.ptr, ev_queue[i].events);
+ break;
+
+ case WAKEUP_CLOCK_DATA: {
+ struct clock_data *d = ev_queue[i].data.ptr;
+ r = flush_timer(e, d->fd, ev_queue[i].events, &d->next);
+ break;
+ }
+
+ case WAKEUP_SIGNAL_DATA:
+ r = process_signal(e, ev_queue[i].data.ptr, ev_queue[i].events);
+ break;
+
+ default:
+ assert_not_reached("Invalid wake-up pointer");
+ }
+ }
+ if (r < 0)
+ goto finish;
+ }
+
+ r = process_watchdog(e);
+ if (r < 0)
+ goto finish;
+
+ r = process_timer(e, e->timestamp.realtime, &e->realtime);
+ if (r < 0)
+ goto finish;
+
+ r = process_timer(e, e->timestamp_boottime, &e->boottime);
+ if (r < 0)
+ goto finish;
+
+ r = process_timer(e, e->timestamp.monotonic, &e->monotonic);
+ if (r < 0)
+ goto finish;
+
+ r = process_timer(e, e->timestamp.realtime, &e->realtime_alarm);
+ if (r < 0)
+ goto finish;
+
+ r = process_timer(e, e->timestamp_boottime, &e->boottime_alarm);
+ if (r < 0)
+ goto finish;
+
+ if (e->need_process_child) {
+ r = process_child(e);
+ if (r < 0)
+ goto finish;
+ }
+
+ if (event_next_pending(e)) {
+ e->state = SD_EVENT_PENDING;
+
+ return 1;
+ }
+
+ r = 0;
+
+finish:
+ e->state = SD_EVENT_INITIAL;
+
+ return r;
+}
+
+_public_ int sd_event_dispatch(sd_event *e) {
+ sd_event_source *p;
+ int r;
+
+ assert_return(e, -EINVAL);
+ assert_return(!event_pid_changed(e), -ECHILD);
+ assert_return(e->state != SD_EVENT_FINISHED, -ESTALE);
+ assert_return(e->state == SD_EVENT_PENDING, -EBUSY);
+
+ if (e->exit_requested)
+ return dispatch_exit(e);
+
+ p = event_next_pending(e);
+ if (p) {
+ sd_event_ref(e);
+
+ e->state = SD_EVENT_RUNNING;
+ r = source_dispatch(p);
+ e->state = SD_EVENT_INITIAL;
+
+ sd_event_unref(e);
+
+ return r;
+ }
+
+ e->state = SD_EVENT_INITIAL;
+
+ return 1;
+}
+
+static void event_log_delays(sd_event *e) {
+ char b[ELEMENTSOF(e->delays) * DECIMAL_STR_MAX(unsigned) + 1];
+ unsigned i;
+ int o;
+
+ for (i = o = 0; i < ELEMENTSOF(e->delays); i++) {
+ o += snprintf(&b[o], sizeof(b) - o, "%u ", e->delays[i]);
+ e->delays[i] = 0;
+ }
+ log_debug("Event loop iterations: %.*s", o, b);
+}
+
+_public_ int sd_event_run(sd_event *e, uint64_t timeout) {
+ int r;
+
+ assert_return(e, -EINVAL);
+ assert_return(!event_pid_changed(e), -ECHILD);
+ assert_return(e->state != SD_EVENT_FINISHED, -ESTALE);
+ assert_return(e->state == SD_EVENT_INITIAL, -EBUSY);
+
+ if (e->profile_delays && e->last_run) {
+ usec_t this_run;
+ unsigned l;
+
+ this_run = now(CLOCK_MONOTONIC);
+
+ l = u64log2(this_run - e->last_run);
+ assert(l < sizeof(e->delays));
+ e->delays[l]++;
+
+ if (this_run - e->last_log >= 5*USEC_PER_SEC) {
+ event_log_delays(e);
+ e->last_log = this_run;
+ }
+ }
+
+ r = sd_event_prepare(e);
+ if (r == 0)
+ /* There was nothing? Then wait... */
+ r = sd_event_wait(e, timeout);
+
+ if (e->profile_delays)
+ e->last_run = now(CLOCK_MONOTONIC);
+
+ if (r > 0) {
+ /* There's something now, then let's dispatch it */
+ r = sd_event_dispatch(e);
+ if (r < 0)
+ return r;
+
+ return 1;
+ }
+
+ return r;
+}
+
+_public_ int sd_event_loop(sd_event *e) {
+ int r;
+
+ assert_return(e, -EINVAL);
+ assert_return(!event_pid_changed(e), -ECHILD);
+ assert_return(e->state == SD_EVENT_INITIAL, -EBUSY);
+
+ sd_event_ref(e);
+
+ while (e->state != SD_EVENT_FINISHED) {
+ r = sd_event_run(e, (uint64_t) -1);
+ if (r < 0)
+ goto finish;
+ }
+
+ r = e->exit_code;
+
+finish:
+ sd_event_unref(e);
+ return r;
+}
+
+_public_ int sd_event_get_fd(sd_event *e) {
+
+ assert_return(e, -EINVAL);
+ assert_return(!event_pid_changed(e), -ECHILD);
+
+ return e->epoll_fd;
+}
+
+_public_ int sd_event_get_state(sd_event *e) {
+ assert_return(e, -EINVAL);
+ assert_return(!event_pid_changed(e), -ECHILD);
+
+ return e->state;
+}
+
+_public_ int sd_event_get_exit_code(sd_event *e, int *code) {
+ assert_return(e, -EINVAL);
+ assert_return(code, -EINVAL);
+ assert_return(!event_pid_changed(e), -ECHILD);
+
+ if (!e->exit_requested)
+ return -ENODATA;
+
+ *code = e->exit_code;
+ return 0;
+}
+
+_public_ int sd_event_exit(sd_event *e, int code) {
+ assert_return(e, -EINVAL);
+ assert_return(e->state != SD_EVENT_FINISHED, -ESTALE);
+ assert_return(!event_pid_changed(e), -ECHILD);
+
+ e->exit_requested = true;
+ e->exit_code = code;
+
+ return 0;
+}
+
+_public_ int sd_event_now(sd_event *e, clockid_t clock, uint64_t *usec) {
+ assert_return(e, -EINVAL);
+ assert_return(usec, -EINVAL);
+ assert_return(!event_pid_changed(e), -ECHILD);
+ assert_return(IN_SET(clock,
+ CLOCK_REALTIME,
+ CLOCK_REALTIME_ALARM,
+ CLOCK_MONOTONIC,
+ CLOCK_BOOTTIME,
+ CLOCK_BOOTTIME_ALARM), -EOPNOTSUPP);
+
+ if (IN_SET(clock, CLOCK_BOOTTIME, CLOCK_BOOTTIME_ALARM) && !clock_boottime_supported())
+ return -EOPNOTSUPP;
+
+ if (!dual_timestamp_is_set(&e->timestamp)) {
+ /* Implicitly fall back to now() if we never ran
+ * before and thus have no cached time. */
+ *usec = now(clock);
+ return 1;
+ }
+
+ switch (clock) {
+
+ case CLOCK_REALTIME:
+ case CLOCK_REALTIME_ALARM:
+ *usec = e->timestamp.realtime;
+ break;
+
+ case CLOCK_MONOTONIC:
+ *usec = e->timestamp.monotonic;
+ break;
+
+ case CLOCK_BOOTTIME:
+ case CLOCK_BOOTTIME_ALARM:
+ *usec = e->timestamp_boottime;
+ break;
+
+ default:
+ assert_not_reached("Unknown clock?");
+ }
+
+ return 0;
+}
+
+_public_ int sd_event_default(sd_event **ret) {
+
+ static thread_local sd_event *default_event = NULL;
+ sd_event *e = NULL;
+ int r;
+
+ if (!ret)
+ return !!default_event;
+
+ if (default_event) {
+ *ret = sd_event_ref(default_event);
+ return 0;
+ }
+
+ r = sd_event_new(&e);
+ if (r < 0)
+ return r;
+
+ e->default_event_ptr = &default_event;
+ e->tid = gettid();
+ default_event = e;
+
+ *ret = e;
+ return 1;
+}
+
+_public_ int sd_event_get_tid(sd_event *e, pid_t *tid) {
+ assert_return(e, -EINVAL);
+ assert_return(tid, -EINVAL);
+ assert_return(!event_pid_changed(e), -ECHILD);
+
+ if (e->tid != 0) {
+ *tid = e->tid;
+ return 0;
+ }
+
+ return -ENXIO;
+}
+
+_public_ int sd_event_set_watchdog(sd_event *e, int b) {
+ int r;
+
+ assert_return(e, -EINVAL);
+ assert_return(!event_pid_changed(e), -ECHILD);
+
+ if (e->watchdog == !!b)
+ return e->watchdog;
+
+ if (b) {
+ struct epoll_event ev = {};
+
+ r = sd_watchdog_enabled(false, &e->watchdog_period);
+ if (r <= 0)
+ return r;
+
+ /* Issue first ping immediately */
+ sd_notify(false, "WATCHDOG=1");
+ e->watchdog_last = now(CLOCK_MONOTONIC);
+
+ e->watchdog_fd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK|TFD_CLOEXEC);
+ if (e->watchdog_fd < 0)
+ return -errno;
+
+ r = arm_watchdog(e);
+ if (r < 0)
+ goto fail;
+
+ ev.events = EPOLLIN;
+ ev.data.ptr = INT_TO_PTR(SOURCE_WATCHDOG);
+
+ r = epoll_ctl(e->epoll_fd, EPOLL_CTL_ADD, e->watchdog_fd, &ev);
+ if (r < 0) {
+ r = -errno;
+ goto fail;
+ }
+
+ } else {
+ if (e->watchdog_fd >= 0) {
+ epoll_ctl(e->epoll_fd, EPOLL_CTL_DEL, e->watchdog_fd, NULL);
+ e->watchdog_fd = safe_close(e->watchdog_fd);
+ }
+ }
+
+ e->watchdog = !!b;
+ return e->watchdog;
+
+fail:
+ e->watchdog_fd = safe_close(e->watchdog_fd);
+ return r;
+}
+
+_public_ int sd_event_get_watchdog(sd_event *e) {
+ assert_return(e, -EINVAL);
+ assert_return(!event_pid_changed(e), -ECHILD);
+
+ return e->watchdog;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-event/test-event.c b/src/libsystemd/libsystemd-internal/sd-event/test-event.c
new file mode 100644
index 0000000000..324ad7ee02
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-event/test-event.c
@@ -0,0 +1,361 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <systemd/sd-event.h>
+
+#include "fd-util.h"
+#include "log.h"
+#include "macro.h"
+#include "signal-util.h"
+#include "util.h"
+
+static int prepare_handler(sd_event_source *s, void *userdata) {
+ log_info("preparing %c", PTR_TO_INT(userdata));
+ return 1;
+}
+
+static bool got_a, got_b, got_c, got_unref;
+static unsigned got_d;
+
+static int unref_handler(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
+ sd_event_source_unref(s);
+ got_unref = true;
+ return 0;
+}
+
+static int io_handler(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
+
+ log_info("got IO on %c", PTR_TO_INT(userdata));
+
+ if (userdata == INT_TO_PTR('a')) {
+ assert_se(sd_event_source_set_enabled(s, SD_EVENT_OFF) >= 0);
+ assert_se(!got_a);
+ got_a = true;
+ } else if (userdata == INT_TO_PTR('b')) {
+ assert_se(!got_b);
+ got_b = true;
+ } else if (userdata == INT_TO_PTR('d')) {
+ got_d++;
+ if (got_d < 2)
+ assert_se(sd_event_source_set_enabled(s, SD_EVENT_ONESHOT) >= 0);
+ else
+ assert_se(sd_event_source_set_enabled(s, SD_EVENT_OFF) >= 0);
+ } else
+ assert_not_reached("Yuck!");
+
+ return 1;
+}
+
+static int child_handler(sd_event_source *s, const siginfo_t *si, void *userdata) {
+
+ assert_se(s);
+ assert_se(si);
+
+ log_info("got child on %c", PTR_TO_INT(userdata));
+
+ assert_se(userdata == INT_TO_PTR('f'));
+
+ assert_se(sd_event_exit(sd_event_source_get_event(s), 0) >= 0);
+ sd_event_source_unref(s);
+
+ return 1;
+}
+
+static int signal_handler(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) {
+ sd_event_source *p = NULL;
+ pid_t pid;
+
+ assert_se(s);
+ assert_se(si);
+
+ log_info("got signal on %c", PTR_TO_INT(userdata));
+
+ assert_se(userdata == INT_TO_PTR('e'));
+
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGCHLD, -1) >= 0);
+
+ pid = fork();
+ assert_se(pid >= 0);
+
+ if (pid == 0)
+ _exit(0);
+
+ assert_se(sd_event_add_child(sd_event_source_get_event(s), &p, pid, WEXITED, child_handler, INT_TO_PTR('f')) >= 0);
+ assert_se(sd_event_source_set_enabled(p, SD_EVENT_ONESHOT) >= 0);
+
+ sd_event_source_unref(s);
+
+ return 1;
+}
+
+static int defer_handler(sd_event_source *s, void *userdata) {
+ sd_event_source *p = NULL;
+
+ assert_se(s);
+
+ log_info("got defer on %c", PTR_TO_INT(userdata));
+
+ assert_se(userdata == INT_TO_PTR('d'));
+
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGUSR1, -1) >= 0);
+
+ assert_se(sd_event_add_signal(sd_event_source_get_event(s), &p, SIGUSR1, signal_handler, INT_TO_PTR('e')) >= 0);
+ assert_se(sd_event_source_set_enabled(p, SD_EVENT_ONESHOT) >= 0);
+ raise(SIGUSR1);
+
+ sd_event_source_unref(s);
+
+ return 1;
+}
+
+static bool do_quit = false;
+
+static int time_handler(sd_event_source *s, uint64_t usec, void *userdata) {
+ log_info("got timer on %c", PTR_TO_INT(userdata));
+
+ if (userdata == INT_TO_PTR('c')) {
+
+ if (do_quit) {
+ sd_event_source *p;
+
+ assert_se(sd_event_add_defer(sd_event_source_get_event(s), &p, defer_handler, INT_TO_PTR('d')) >= 0);
+ assert_se(sd_event_source_set_enabled(p, SD_EVENT_ONESHOT) >= 0);
+ } else {
+ assert_se(!got_c);
+ got_c = true;
+ }
+ } else
+ assert_not_reached("Huh?");
+
+ return 2;
+}
+
+static bool got_exit = false;
+
+static int exit_handler(sd_event_source *s, void *userdata) {
+ log_info("got quit handler on %c", PTR_TO_INT(userdata));
+
+ got_exit = true;
+
+ return 3;
+}
+
+static bool got_post = false;
+
+static int post_handler(sd_event_source *s, void *userdata) {
+ log_info("got post handler");
+
+ got_post = true;
+
+ return 2;
+}
+
+static void test_basic(void) {
+ sd_event *e = NULL;
+ sd_event_source *w = NULL, *x = NULL, *y = NULL, *z = NULL, *q = NULL, *t = NULL;
+ static const char ch = 'x';
+ int a[2] = { -1, -1 }, b[2] = { -1, -1}, d[2] = { -1, -1}, k[2] = { -1, -1 };
+ uint64_t event_now;
+
+ assert_se(pipe(a) >= 0);
+ assert_se(pipe(b) >= 0);
+ assert_se(pipe(d) >= 0);
+ assert_se(pipe(k) >= 0);
+
+ assert_se(sd_event_default(&e) >= 0);
+ assert_se(sd_event_now(e, CLOCK_MONOTONIC, &event_now) > 0);
+
+ assert_se(sd_event_set_watchdog(e, true) >= 0);
+
+ /* Test whether we cleanly can destroy an io event source from its own handler */
+ got_unref = false;
+ assert_se(sd_event_add_io(e, &t, k[0], EPOLLIN, unref_handler, NULL) >= 0);
+ assert_se(write(k[1], &ch, 1) == 1);
+ assert_se(sd_event_run(e, (uint64_t) -1) >= 1);
+ assert_se(got_unref);
+
+ got_a = false, got_b = false, got_c = false, got_d = 0;
+
+ /* Add a oneshot handler, trigger it, re-enable it, and trigger
+ * it again. */
+ assert_se(sd_event_add_io(e, &w, d[0], EPOLLIN, io_handler, INT_TO_PTR('d')) >= 0);
+ assert_se(sd_event_source_set_enabled(w, SD_EVENT_ONESHOT) >= 0);
+ assert_se(write(d[1], &ch, 1) >= 0);
+ assert_se(sd_event_run(e, (uint64_t) -1) >= 1);
+ assert_se(got_d == 1);
+ assert_se(write(d[1], &ch, 1) >= 0);
+ assert_se(sd_event_run(e, (uint64_t) -1) >= 1);
+ assert_se(got_d == 2);
+
+ assert_se(sd_event_add_io(e, &x, a[0], EPOLLIN, io_handler, INT_TO_PTR('a')) >= 0);
+ assert_se(sd_event_add_io(e, &y, b[0], EPOLLIN, io_handler, INT_TO_PTR('b')) >= 0);
+ assert_se(sd_event_add_time(e, &z, CLOCK_MONOTONIC, 0, 0, time_handler, INT_TO_PTR('c')) >= 0);
+ assert_se(sd_event_add_exit(e, &q, exit_handler, INT_TO_PTR('g')) >= 0);
+
+ assert_se(sd_event_source_set_priority(x, 99) >= 0);
+ assert_se(sd_event_source_set_enabled(y, SD_EVENT_ONESHOT) >= 0);
+ assert_se(sd_event_source_set_prepare(x, prepare_handler) >= 0);
+ assert_se(sd_event_source_set_priority(z, 50) >= 0);
+ assert_se(sd_event_source_set_enabled(z, SD_EVENT_ONESHOT) >= 0);
+ assert_se(sd_event_source_set_prepare(z, prepare_handler) >= 0);
+
+ /* Test for floating event sources */
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN+1, -1) >= 0);
+ assert_se(sd_event_add_signal(e, NULL, SIGRTMIN+1, NULL, NULL) >= 0);
+
+ assert_se(write(a[1], &ch, 1) >= 0);
+ assert_se(write(b[1], &ch, 1) >= 0);
+
+ assert_se(!got_a && !got_b && !got_c);
+
+ assert_se(sd_event_run(e, (uint64_t) -1) >= 1);
+
+ assert_se(!got_a && got_b && !got_c);
+
+ assert_se(sd_event_run(e, (uint64_t) -1) >= 1);
+
+ assert_se(!got_a && got_b && got_c);
+
+ assert_se(sd_event_run(e, (uint64_t) -1) >= 1);
+
+ assert_se(got_a && got_b && got_c);
+
+ sd_event_source_unref(x);
+ sd_event_source_unref(y);
+
+ do_quit = true;
+ assert_se(sd_event_add_post(e, NULL, post_handler, NULL) >= 0);
+ assert_se(sd_event_now(e, CLOCK_MONOTONIC, &event_now) == 0);
+ assert_se(sd_event_source_set_time(z, event_now + 200 * USEC_PER_MSEC) >= 0);
+ assert_se(sd_event_source_set_enabled(z, SD_EVENT_ONESHOT) >= 0);
+
+ assert_se(sd_event_loop(e) >= 0);
+ assert_se(got_post);
+ assert_se(got_exit);
+
+ sd_event_source_unref(z);
+ sd_event_source_unref(q);
+
+ sd_event_source_unref(w);
+
+ sd_event_unref(e);
+
+ safe_close_pair(a);
+ safe_close_pair(b);
+ safe_close_pair(d);
+ safe_close_pair(k);
+}
+
+static void test_sd_event_now(void) {
+ _cleanup_(sd_event_unrefp) sd_event *e = NULL;
+ uint64_t event_now;
+
+ assert_se(sd_event_new(&e) >= 0);
+ assert_se(sd_event_now(e, CLOCK_MONOTONIC, &event_now) > 0);
+ assert_se(sd_event_now(e, CLOCK_REALTIME, &event_now) > 0);
+ assert_se(sd_event_now(e, CLOCK_REALTIME_ALARM, &event_now) > 0);
+ if (clock_boottime_supported()) {
+ assert_se(sd_event_now(e, CLOCK_BOOTTIME, &event_now) > 0);
+ assert_se(sd_event_now(e, CLOCK_BOOTTIME_ALARM, &event_now) > 0);
+ }
+ assert_se(sd_event_now(e, -1, &event_now) == -EOPNOTSUPP);
+ assert_se(sd_event_now(e, 900 /* arbitrary big number */, &event_now) == -EOPNOTSUPP);
+
+ assert_se(sd_event_run(e, 0) == 0);
+
+ assert_se(sd_event_now(e, CLOCK_MONOTONIC, &event_now) == 0);
+ assert_se(sd_event_now(e, CLOCK_REALTIME, &event_now) == 0);
+ assert_se(sd_event_now(e, CLOCK_REALTIME_ALARM, &event_now) == 0);
+ if (clock_boottime_supported()) {
+ assert_se(sd_event_now(e, CLOCK_BOOTTIME, &event_now) == 0);
+ assert_se(sd_event_now(e, CLOCK_BOOTTIME_ALARM, &event_now) == 0);
+ }
+ assert_se(sd_event_now(e, -1, &event_now) == -EOPNOTSUPP);
+ assert_se(sd_event_now(e, 900 /* arbitrary big number */, &event_now) == -EOPNOTSUPP);
+}
+
+static int last_rtqueue_sigval = 0;
+static int n_rtqueue = 0;
+
+static int rtqueue_handler(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) {
+ last_rtqueue_sigval = si->ssi_int;
+ n_rtqueue++;
+ return 0;
+}
+
+static void test_rtqueue(void) {
+ sd_event_source *u = NULL, *v = NULL, *s = NULL;
+ sd_event *e = NULL;
+
+ assert_se(sd_event_default(&e) >= 0);
+
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN+2, SIGRTMIN+3, SIGUSR2, -1) >= 0);
+ assert_se(sd_event_add_signal(e, &u, SIGRTMIN+2, rtqueue_handler, NULL) >= 0);
+ assert_se(sd_event_add_signal(e, &v, SIGRTMIN+3, rtqueue_handler, NULL) >= 0);
+ assert_se(sd_event_add_signal(e, &s, SIGUSR2, rtqueue_handler, NULL) >= 0);
+
+ assert_se(sd_event_source_set_priority(v, -10) >= 0);
+
+ assert(sigqueue(getpid(), SIGRTMIN+2, (union sigval) { .sival_int = 1 }) >= 0);
+ assert(sigqueue(getpid(), SIGRTMIN+3, (union sigval) { .sival_int = 2 }) >= 0);
+ assert(sigqueue(getpid(), SIGUSR2, (union sigval) { .sival_int = 3 }) >= 0);
+ assert(sigqueue(getpid(), SIGRTMIN+3, (union sigval) { .sival_int = 4 }) >= 0);
+ assert(sigqueue(getpid(), SIGUSR2, (union sigval) { .sival_int = 5 }) >= 0);
+
+ assert_se(n_rtqueue == 0);
+ assert_se(last_rtqueue_sigval == 0);
+
+ assert_se(sd_event_run(e, (uint64_t) -1) >= 1);
+ assert_se(n_rtqueue == 1);
+ assert_se(last_rtqueue_sigval == 2); /* first SIGRTMIN+3 */
+
+ assert_se(sd_event_run(e, (uint64_t) -1) >= 1);
+ assert_se(n_rtqueue == 2);
+ assert_se(last_rtqueue_sigval == 4); /* second SIGRTMIN+3 */
+
+ assert_se(sd_event_run(e, (uint64_t) -1) >= 1);
+ assert_se(n_rtqueue == 3);
+ assert_se(last_rtqueue_sigval == 3); /* first SIGUSR2 */
+
+ assert_se(sd_event_run(e, (uint64_t) -1) >= 1);
+ assert_se(n_rtqueue == 4);
+ assert_se(last_rtqueue_sigval == 1); /* SIGRTMIN+2 */
+
+ assert_se(sd_event_run(e, 0) == 0); /* the other SIGUSR2 is dropped, because the first one was still queued */
+ assert_se(n_rtqueue == 4);
+ assert_se(last_rtqueue_sigval == 1);
+
+ sd_event_source_unref(u);
+ sd_event_source_unref(v);
+ sd_event_source_unref(s);
+
+ sd_event_unref(e);
+}
+
+int main(int argc, char *argv[]) {
+
+ log_set_max_level(LOG_DEBUG);
+ log_parse_environment();
+
+ test_basic();
+ test_sd_event_now();
+ test_rtqueue();
+
+ return 0;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-hwdb/hwdb-internal.h b/src/libsystemd/libsystemd-internal/sd-hwdb/hwdb-internal.h
new file mode 100644
index 0000000000..8ffb5e5c74
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-hwdb/hwdb-internal.h
@@ -0,0 +1,72 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2012 Kay Sievers <kay@vrfy.org>
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "sparse-endian.h"
+#include "util.h"
+
+#define HWDB_SIG { 'K', 'S', 'L', 'P', 'H', 'H', 'R', 'H' }
+
+/* on-disk trie objects */
+struct trie_header_f {
+ uint8_t signature[8];
+
+ /* version of tool which created the file */
+ le64_t tool_version;
+ le64_t file_size;
+
+ /* size of structures to allow them to grow */
+ le64_t header_size;
+ le64_t node_size;
+ le64_t child_entry_size;
+ le64_t value_entry_size;
+
+ /* offset of the root trie node */
+ le64_t nodes_root_off;
+
+ /* size of the nodes and string section */
+ le64_t nodes_len;
+ le64_t strings_len;
+} _packed_;
+
+struct trie_node_f {
+ /* prefix of lookup string, shared by all children */
+ le64_t prefix_off;
+ /* size of children entry array appended to the node */
+ uint8_t children_count;
+ uint8_t padding[7];
+ /* size of value entry array appended to the node */
+ le64_t values_count;
+} _packed_;
+
+/* array of child entries, follows directly the node record */
+struct trie_child_entry_f {
+ /* index of the child node */
+ uint8_t c;
+ uint8_t padding[7];
+ /* offset of the child node */
+ le64_t child_off;
+} _packed_;
+
+/* array of value entries, follows directly the node record/child array */
+struct trie_value_entry_f {
+ le64_t key_off;
+ le64_t value_off;
+} _packed_;
diff --git a/src/libsystemd/libsystemd-internal/sd-hwdb/hwdb-util.h b/src/libsystemd/libsystemd-internal/sd-hwdb/hwdb-util.h
new file mode 100644
index 0000000000..05dc47962b
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-hwdb/hwdb-util.h
@@ -0,0 +1,26 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2014 Tom Gundersen <teg@jklm.no>
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <systemd/sd-hwdb.h>
+
+#include "util.h"
+
+bool hwdb_validate(sd_hwdb *hwdb);
diff --git a/src/libsystemd/libsystemd-internal/sd-hwdb/sd-hwdb.c b/src/libsystemd/libsystemd-internal/sd-hwdb/sd-hwdb.c
new file mode 100644
index 0000000000..7dcfe95b87
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-hwdb/sd-hwdb.c
@@ -0,0 +1,470 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2012 Kay Sievers <kay@vrfy.org>
+ Copyright 2008 Alan Jenkins <alan.christopher.jenkins@googlemail.com>
+ Copyright 2014 Tom Gundersen <teg@jklm.no>
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <errno.h>
+#include <fnmatch.h>
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+
+#include <systemd/sd-hwdb.h>
+
+#include "alloc-util.h"
+#include "fd-util.h"
+#include "hashmap.h"
+#include "hwdb-internal.h"
+#include "hwdb-util.h"
+#include "refcnt.h"
+#include "string-util.h"
+
+struct sd_hwdb {
+ RefCount n_ref;
+ int refcount;
+
+ FILE *f;
+ struct stat st;
+ union {
+ struct trie_header_f *head;
+ const char *map;
+ };
+
+ char *modalias;
+
+ OrderedHashmap *properties;
+ Iterator properties_iterator;
+ bool properties_modified;
+};
+
+struct linebuf {
+ char bytes[LINE_MAX];
+ size_t size;
+ size_t len;
+};
+
+static void linebuf_init(struct linebuf *buf) {
+ buf->size = 0;
+ buf->len = 0;
+}
+
+static const char *linebuf_get(struct linebuf *buf) {
+ if (buf->len + 1 >= sizeof(buf->bytes))
+ return NULL;
+ buf->bytes[buf->len] = '\0';
+ return buf->bytes;
+}
+
+static bool linebuf_add(struct linebuf *buf, const char *s, size_t len) {
+ if (buf->len + len >= sizeof(buf->bytes))
+ return false;
+ memcpy(buf->bytes + buf->len, s, len);
+ buf->len += len;
+ return true;
+}
+
+static bool linebuf_add_char(struct linebuf *buf, char c) {
+ if (buf->len + 1 >= sizeof(buf->bytes))
+ return false;
+ buf->bytes[buf->len++] = c;
+ return true;
+}
+
+static void linebuf_rem(struct linebuf *buf, size_t count) {
+ assert(buf->len >= count);
+ buf->len -= count;
+}
+
+static void linebuf_rem_char(struct linebuf *buf) {
+ linebuf_rem(buf, 1);
+}
+
+static const struct trie_child_entry_f *trie_node_children(sd_hwdb *hwdb, const struct trie_node_f *node) {
+ return (const struct trie_child_entry_f *)((const char *)node + le64toh(hwdb->head->node_size));
+}
+
+static const struct trie_value_entry_f *trie_node_values(sd_hwdb *hwdb, const struct trie_node_f *node) {
+ const char *base = (const char *)node;
+
+ base += le64toh(hwdb->head->node_size);
+ base += node->children_count * le64toh(hwdb->head->child_entry_size);
+ return (const struct trie_value_entry_f *)base;
+}
+
+static const struct trie_node_f *trie_node_from_off(sd_hwdb *hwdb, le64_t off) {
+ return (const struct trie_node_f *)(hwdb->map + le64toh(off));
+}
+
+static const char *trie_string(sd_hwdb *hwdb, le64_t off) {
+ return hwdb->map + le64toh(off);
+}
+
+static int trie_children_cmp_f(const void *v1, const void *v2) {
+ const struct trie_child_entry_f *n1 = v1;
+ const struct trie_child_entry_f *n2 = v2;
+
+ return n1->c - n2->c;
+}
+
+static const struct trie_node_f *node_lookup_f(sd_hwdb *hwdb, const struct trie_node_f *node, uint8_t c) {
+ struct trie_child_entry_f *child;
+ struct trie_child_entry_f search;
+
+ search.c = c;
+ child = bsearch(&search, trie_node_children(hwdb, node), node->children_count,
+ le64toh(hwdb->head->child_entry_size), trie_children_cmp_f);
+ if (child)
+ return trie_node_from_off(hwdb, child->child_off);
+ return NULL;
+}
+
+static int hwdb_add_property(sd_hwdb *hwdb, const char *key, const char *value) {
+ int r;
+
+ assert(hwdb);
+ assert(key);
+ assert(value);
+
+ /*
+ * Silently ignore all properties which do not start with a
+ * space; future extensions might use additional prefixes.
+ */
+ if (key[0] != ' ')
+ return 0;
+
+ key++;
+
+ r = ordered_hashmap_ensure_allocated(&hwdb->properties, &string_hash_ops);
+ if (r < 0)
+ return r;
+
+ r = ordered_hashmap_replace(hwdb->properties, key, (char*)value);
+ if (r < 0)
+ return r;
+
+ hwdb->properties_modified = true;
+
+ return 0;
+}
+
+static int trie_fnmatch_f(sd_hwdb *hwdb, const struct trie_node_f *node, size_t p,
+ struct linebuf *buf, const char *search) {
+ size_t len;
+ size_t i;
+ const char *prefix;
+ int err;
+
+ prefix = trie_string(hwdb, node->prefix_off);
+ len = strlen(prefix + p);
+ linebuf_add(buf, prefix + p, len);
+
+ for (i = 0; i < node->children_count; i++) {
+ const struct trie_child_entry_f *child = &trie_node_children(hwdb, node)[i];
+
+ linebuf_add_char(buf, child->c);
+ err = trie_fnmatch_f(hwdb, trie_node_from_off(hwdb, child->child_off), 0, buf, search);
+ if (err < 0)
+ return err;
+ linebuf_rem_char(buf);
+ }
+
+ if (le64toh(node->values_count) && fnmatch(linebuf_get(buf), search, 0) == 0)
+ for (i = 0; i < le64toh(node->values_count); i++) {
+ err = hwdb_add_property(hwdb, trie_string(hwdb, trie_node_values(hwdb, node)[i].key_off),
+ trie_string(hwdb, trie_node_values(hwdb, node)[i].value_off));
+ if (err < 0)
+ return err;
+ }
+
+ linebuf_rem(buf, len);
+ return 0;
+}
+
+static int trie_search_f(sd_hwdb *hwdb, const char *search) {
+ struct linebuf buf;
+ const struct trie_node_f *node;
+ size_t i = 0;
+ int err;
+
+ linebuf_init(&buf);
+
+ node = trie_node_from_off(hwdb, hwdb->head->nodes_root_off);
+ while (node) {
+ const struct trie_node_f *child;
+ size_t p = 0;
+
+ if (node->prefix_off) {
+ uint8_t c;
+
+ for (; (c = trie_string(hwdb, node->prefix_off)[p]); p++) {
+ if (c == '*' || c == '?' || c == '[')
+ return trie_fnmatch_f(hwdb, node, p, &buf, search + i + p);
+ if (c != search[i + p])
+ return 0;
+ }
+ i += p;
+ }
+
+ child = node_lookup_f(hwdb, node, '*');
+ if (child) {
+ linebuf_add_char(&buf, '*');
+ err = trie_fnmatch_f(hwdb, child, 0, &buf, search + i);
+ if (err < 0)
+ return err;
+ linebuf_rem_char(&buf);
+ }
+
+ child = node_lookup_f(hwdb, node, '?');
+ if (child) {
+ linebuf_add_char(&buf, '?');
+ err = trie_fnmatch_f(hwdb, child, 0, &buf, search + i);
+ if (err < 0)
+ return err;
+ linebuf_rem_char(&buf);
+ }
+
+ child = node_lookup_f(hwdb, node, '[');
+ if (child) {
+ linebuf_add_char(&buf, '[');
+ err = trie_fnmatch_f(hwdb, child, 0, &buf, search + i);
+ if (err < 0)
+ return err;
+ linebuf_rem_char(&buf);
+ }
+
+ if (search[i] == '\0') {
+ size_t n;
+
+ for (n = 0; n < le64toh(node->values_count); n++) {
+ err = hwdb_add_property(hwdb, trie_string(hwdb, trie_node_values(hwdb, node)[n].key_off),
+ trie_string(hwdb, trie_node_values(hwdb, node)[n].value_off));
+ if (err < 0)
+ return err;
+ }
+ return 0;
+ }
+
+ child = node_lookup_f(hwdb, node, search[i]);
+ node = child;
+ i++;
+ }
+ return 0;
+}
+
+static const char hwdb_bin_paths[] =
+ "/etc/systemd/hwdb/hwdb.bin\0"
+ "/etc/udev/hwdb.bin\0"
+ "/usr/lib/systemd/hwdb/hwdb.bin\0"
+#ifdef HAVE_SPLIT_USR
+ "/lib/systemd/hwdb/hwdb.bin\0"
+#endif
+ UDEVLIBEXECDIR "/hwdb.bin\0";
+
+_public_ int sd_hwdb_new(sd_hwdb **ret) {
+ _cleanup_(sd_hwdb_unrefp) sd_hwdb *hwdb = NULL;
+ const char *hwdb_bin_path;
+ const char sig[] = HWDB_SIG;
+
+ assert_return(ret, -EINVAL);
+
+ hwdb = new0(sd_hwdb, 1);
+ if (!hwdb)
+ return -ENOMEM;
+
+ hwdb->n_ref = REFCNT_INIT;
+
+ /* find hwdb.bin in hwdb_bin_paths */
+ NULSTR_FOREACH(hwdb_bin_path, hwdb_bin_paths) {
+ hwdb->f = fopen(hwdb_bin_path, "re");
+ if (hwdb->f)
+ break;
+ else if (errno == ENOENT)
+ continue;
+ else
+ return log_debug_errno(errno, "error reading %s: %m", hwdb_bin_path);
+ }
+
+ if (!hwdb->f) {
+ log_debug("hwdb.bin does not exist, please run udevadm hwdb --update");
+ return -ENOENT;
+ }
+
+ if (fstat(fileno(hwdb->f), &hwdb->st) < 0 ||
+ (size_t)hwdb->st.st_size < offsetof(struct trie_header_f, strings_len) + 8)
+ return log_debug_errno(errno, "error reading %s: %m", hwdb_bin_path);
+
+ hwdb->map = mmap(0, hwdb->st.st_size, PROT_READ, MAP_SHARED, fileno(hwdb->f), 0);
+ if (hwdb->map == MAP_FAILED)
+ return log_debug_errno(errno, "error mapping %s: %m", hwdb_bin_path);
+
+ if (memcmp(hwdb->map, sig, sizeof(hwdb->head->signature)) != 0 ||
+ (size_t)hwdb->st.st_size != le64toh(hwdb->head->file_size)) {
+ log_debug("error recognizing the format of %s", hwdb_bin_path);
+ return -EINVAL;
+ }
+
+ log_debug("=== trie on-disk ===");
+ log_debug("tool version: %"PRIu64, le64toh(hwdb->head->tool_version));
+ log_debug("file size: %8"PRIi64" bytes", hwdb->st.st_size);
+ log_debug("header size %8"PRIu64" bytes", le64toh(hwdb->head->header_size));
+ log_debug("strings %8"PRIu64" bytes", le64toh(hwdb->head->strings_len));
+ log_debug("nodes %8"PRIu64" bytes", le64toh(hwdb->head->nodes_len));
+
+ *ret = hwdb;
+ hwdb = NULL;
+
+ return 0;
+}
+
+_public_ sd_hwdb *sd_hwdb_ref(sd_hwdb *hwdb) {
+ assert_return(hwdb, NULL);
+
+ assert_se(REFCNT_INC(hwdb->n_ref) >= 2);
+
+ return hwdb;
+}
+
+_public_ sd_hwdb *sd_hwdb_unref(sd_hwdb *hwdb) {
+ if (hwdb && REFCNT_DEC(hwdb->n_ref) == 0) {
+ if (hwdb->map)
+ munmap((void *)hwdb->map, hwdb->st.st_size);
+ safe_fclose(hwdb->f);
+ free(hwdb->modalias);
+ ordered_hashmap_free(hwdb->properties);
+ free(hwdb);
+ }
+
+ return NULL;
+}
+
+bool hwdb_validate(sd_hwdb *hwdb) {
+ bool found = false;
+ const char* p;
+ struct stat st;
+
+ if (!hwdb)
+ return false;
+ if (!hwdb->f)
+ return false;
+
+ /* if hwdb.bin doesn't exist anywhere, we need to update */
+ NULSTR_FOREACH(p, hwdb_bin_paths) {
+ if (stat(p, &st) >= 0) {
+ found = true;
+ break;
+ }
+ }
+ if (!found)
+ return true;
+
+ if (timespec_load(&hwdb->st.st_mtim) != timespec_load(&st.st_mtim))
+ return true;
+ return false;
+}
+
+static int properties_prepare(sd_hwdb *hwdb, const char *modalias) {
+ _cleanup_free_ char *mod = NULL;
+ int r;
+
+ assert(hwdb);
+ assert(modalias);
+
+ if (streq_ptr(modalias, hwdb->modalias))
+ return 0;
+
+ mod = strdup(modalias);
+ if (!mod)
+ return -ENOMEM;
+
+ ordered_hashmap_clear(hwdb->properties);
+
+ hwdb->properties_modified = true;
+
+ r = trie_search_f(hwdb, modalias);
+ if (r < 0)
+ return r;
+
+ free(hwdb->modalias);
+ hwdb->modalias = mod;
+ mod = NULL;
+
+ return 0;
+}
+
+_public_ int sd_hwdb_get(sd_hwdb *hwdb, const char *modalias, const char *key, const char **_value) {
+ const char *value;
+ int r;
+
+ assert_return(hwdb, -EINVAL);
+ assert_return(hwdb->f, -EINVAL);
+ assert_return(modalias, -EINVAL);
+ assert_return(_value, -EINVAL);
+
+ r = properties_prepare(hwdb, modalias);
+ if (r < 0)
+ return r;
+
+ value = ordered_hashmap_get(hwdb->properties, key);
+ if (!value)
+ return -ENOENT;
+
+ *_value = value;
+
+ return 0;
+}
+
+_public_ int sd_hwdb_seek(sd_hwdb *hwdb, const char *modalias) {
+ int r;
+
+ assert_return(hwdb, -EINVAL);
+ assert_return(hwdb->f, -EINVAL);
+ assert_return(modalias, -EINVAL);
+
+ r = properties_prepare(hwdb, modalias);
+ if (r < 0)
+ return r;
+
+ hwdb->properties_modified = false;
+ hwdb->properties_iterator = ITERATOR_FIRST;
+
+ return 0;
+}
+
+_public_ int sd_hwdb_enumerate(sd_hwdb *hwdb, const char **key, const char **value) {
+ const void *k;
+ void *v;
+
+ assert_return(hwdb, -EINVAL);
+ assert_return(key, -EINVAL);
+ assert_return(value, -EINVAL);
+
+ if (hwdb->properties_modified)
+ return -EAGAIN;
+
+ ordered_hashmap_iterate(hwdb->properties, &hwdb->properties_iterator, &v, &k);
+ if (!k)
+ return 0;
+
+ *key = k;
+ *value = v;
+
+ return 1;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-id128/sd-id128.c b/src/libsystemd/libsystemd-internal/sd-id128/sd-id128.c
new file mode 100644
index 0000000000..cda3e9f0df
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-id128/sd-id128.c
@@ -0,0 +1,225 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2011 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include <systemd/sd-id128.h>
+
+#include "fd-util.h"
+#include "hexdecoct.h"
+#include "io-util.h"
+#include "macro.h"
+#include "random-util.h"
+#include "util.h"
+
+_public_ char *sd_id128_to_string(sd_id128_t id, char s[SD_ID128_STRING_MAX]) {
+ unsigned n;
+
+ assert_return(s, NULL);
+
+ for (n = 0; n < 16; n++) {
+ s[n*2] = hexchar(id.bytes[n] >> 4);
+ s[n*2+1] = hexchar(id.bytes[n] & 0xF);
+ }
+
+ s[32] = 0;
+
+ return s;
+}
+
+_public_ int sd_id128_from_string(const char s[], sd_id128_t *ret) {
+ unsigned n, i;
+ sd_id128_t t;
+ bool is_guid = false;
+
+ assert_return(s, -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ for (n = 0, i = 0; n < 16;) {
+ int a, b;
+
+ if (s[i] == '-') {
+ /* Is this a GUID? Then be nice, and skip over
+ * the dashes */
+
+ if (i == 8)
+ is_guid = true;
+ else if (i == 13 || i == 18 || i == 23) {
+ if (!is_guid)
+ return -EINVAL;
+ } else
+ return -EINVAL;
+
+ i++;
+ continue;
+ }
+
+ a = unhexchar(s[i++]);
+ if (a < 0)
+ return -EINVAL;
+
+ b = unhexchar(s[i++]);
+ if (b < 0)
+ return -EINVAL;
+
+ t.bytes[n++] = (a << 4) | b;
+ }
+
+ if (i != (is_guid ? 36 : 32))
+ return -EINVAL;
+
+ if (s[i] != 0)
+ return -EINVAL;
+
+ *ret = t;
+ return 0;
+}
+
+static sd_id128_t make_v4_uuid(sd_id128_t id) {
+ /* Stolen from generate_random_uuid() of drivers/char/random.c
+ * in the kernel sources */
+
+ /* Set UUID version to 4 --- truly random generation */
+ id.bytes[6] = (id.bytes[6] & 0x0F) | 0x40;
+
+ /* Set the UUID variant to DCE */
+ id.bytes[8] = (id.bytes[8] & 0x3F) | 0x80;
+
+ return id;
+}
+
+_public_ int sd_id128_get_machine(sd_id128_t *ret) {
+ static thread_local sd_id128_t saved_machine_id;
+ static thread_local bool saved_machine_id_valid = false;
+ _cleanup_close_ int fd = -1;
+ char buf[33];
+ unsigned j;
+ sd_id128_t t;
+ int r;
+
+ assert_return(ret, -EINVAL);
+
+ if (saved_machine_id_valid) {
+ *ret = saved_machine_id;
+ return 0;
+ }
+
+ fd = open("/etc/machine-id", O_RDONLY|O_CLOEXEC|O_NOCTTY);
+ if (fd < 0)
+ return -errno;
+
+ r = loop_read_exact(fd, buf, 33, false);
+ if (r < 0)
+ return r;
+ if (buf[32] !='\n')
+ return -EIO;
+
+ for (j = 0; j < 16; j++) {
+ int a, b;
+
+ a = unhexchar(buf[j*2]);
+ b = unhexchar(buf[j*2+1]);
+
+ if (a < 0 || b < 0)
+ return -EIO;
+
+ t.bytes[j] = a << 4 | b;
+ }
+
+ saved_machine_id = t;
+ saved_machine_id_valid = true;
+
+ *ret = t;
+ return 0;
+}
+
+_public_ int sd_id128_get_boot(sd_id128_t *ret) {
+ static thread_local sd_id128_t saved_boot_id;
+ static thread_local bool saved_boot_id_valid = false;
+ _cleanup_close_ int fd = -1;
+ char buf[36];
+ unsigned j;
+ sd_id128_t t;
+ char *p;
+ int r;
+
+ assert_return(ret, -EINVAL);
+
+ if (saved_boot_id_valid) {
+ *ret = saved_boot_id;
+ return 0;
+ }
+
+ fd = open("/proc/sys/kernel/random/boot_id", O_RDONLY|O_CLOEXEC|O_NOCTTY);
+ if (fd < 0)
+ return -errno;
+
+ r = loop_read_exact(fd, buf, 36, false);
+ if (r < 0)
+ return r;
+
+ for (j = 0, p = buf; j < 16; j++) {
+ int a, b;
+
+ if (p >= buf + 35)
+ return -EIO;
+
+ if (*p == '-') {
+ p++;
+ if (p >= buf + 35)
+ return -EIO;
+ }
+
+ a = unhexchar(p[0]);
+ b = unhexchar(p[1]);
+
+ if (a < 0 || b < 0)
+ return -EIO;
+
+ t.bytes[j] = a << 4 | b;
+
+ p += 2;
+ }
+
+ saved_boot_id = t;
+ saved_boot_id_valid = true;
+
+ *ret = t;
+ return 0;
+}
+
+_public_ int sd_id128_randomize(sd_id128_t *ret) {
+ sd_id128_t t;
+ int r;
+
+ assert_return(ret, -EINVAL);
+
+ r = dev_urandom(&t, sizeof(t));
+ if (r < 0)
+ return r;
+
+ /* Turn this into a valid v4 UUID, to be nice. Note that we
+ * only guarantee this for newly generated UUIDs, not for
+ * pre-existing ones. */
+
+ *ret = make_v4_uuid(t);
+ return 0;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-login/sd-login.c b/src/libsystemd/libsystemd-internal/sd-login/sd-login.c
new file mode 100644
index 0000000000..84831d5e95
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-login/sd-login.c
@@ -0,0 +1,1062 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2011 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <errno.h>
+#include <poll.h>
+#include <string.h>
+#include <sys/inotify.h>
+#include <unistd.h>
+
+#include <systemd/sd-login.h>
+
+#include "alloc-util.h"
+#include "cgroup-util.h"
+#include "dirent-util.h"
+#include "escape.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "formats-util.h"
+#include "fs-util.h"
+#include "hostname-util.h"
+#include "io-util.h"
+#include "login-util.h"
+#include "macro.h"
+#include "parse-util.h"
+#include "path-util.h"
+#include "socket-util.h"
+#include "string-util.h"
+#include "strv.h"
+#include "user-util.h"
+#include "util.h"
+
+/* Error codes:
+ *
+ * invalid input parameters → -EINVAL
+ * invalid fd → -EBADF
+ * process does not exist → -ESRCH
+ * cgroup does not exist → -ENOENT
+ * machine, session does not exist → -ENXIO
+ * requested metadata on object is missing → -ENODATA
+ */
+
+_public_ int sd_pid_get_session(pid_t pid, char **session) {
+
+ assert_return(pid >= 0, -EINVAL);
+ assert_return(session, -EINVAL);
+
+ return cg_pid_get_session(pid, session);
+}
+
+_public_ int sd_pid_get_unit(pid_t pid, char **unit) {
+
+ assert_return(pid >= 0, -EINVAL);
+ assert_return(unit, -EINVAL);
+
+ return cg_pid_get_unit(pid, unit);
+}
+
+_public_ int sd_pid_get_user_unit(pid_t pid, char **unit) {
+
+ assert_return(pid >= 0, -EINVAL);
+ assert_return(unit, -EINVAL);
+
+ return cg_pid_get_user_unit(pid, unit);
+}
+
+_public_ int sd_pid_get_machine_name(pid_t pid, char **name) {
+
+ assert_return(pid >= 0, -EINVAL);
+ assert_return(name, -EINVAL);
+
+ return cg_pid_get_machine_name(pid, name);
+}
+
+_public_ int sd_pid_get_slice(pid_t pid, char **slice) {
+
+ assert_return(pid >= 0, -EINVAL);
+ assert_return(slice, -EINVAL);
+
+ return cg_pid_get_slice(pid, slice);
+}
+
+_public_ int sd_pid_get_user_slice(pid_t pid, char **slice) {
+
+ assert_return(pid >= 0, -EINVAL);
+ assert_return(slice, -EINVAL);
+
+ return cg_pid_get_user_slice(pid, slice);
+}
+
+_public_ int sd_pid_get_owner_uid(pid_t pid, uid_t *uid) {
+
+ assert_return(pid >= 0, -EINVAL);
+ assert_return(uid, -EINVAL);
+
+ return cg_pid_get_owner_uid(pid, uid);
+}
+
+_public_ int sd_pid_get_cgroup(pid_t pid, char **cgroup) {
+ char *c;
+ int r;
+
+ assert_return(pid >= 0, -EINVAL);
+ assert_return(cgroup, -EINVAL);
+
+ r = cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, pid, &c);
+ if (r < 0)
+ return r;
+
+ /* The internal APIs return the empty string for the root
+ * cgroup, let's return the "/" in the public APIs instead, as
+ * that's easier and less ambigious for people to grok. */
+ if (isempty(c)) {
+ free(c);
+ c = strdup("/");
+ if (!c)
+ return -ENOMEM;
+
+ }
+
+ *cgroup = c;
+ return 0;
+}
+
+_public_ int sd_peer_get_session(int fd, char **session) {
+ struct ucred ucred = {};
+ int r;
+
+ assert_return(fd >= 0, -EBADF);
+ assert_return(session, -EINVAL);
+
+ r = getpeercred(fd, &ucred);
+ if (r < 0)
+ return r;
+
+ return cg_pid_get_session(ucred.pid, session);
+}
+
+_public_ int sd_peer_get_owner_uid(int fd, uid_t *uid) {
+ struct ucred ucred;
+ int r;
+
+ assert_return(fd >= 0, -EBADF);
+ assert_return(uid, -EINVAL);
+
+ r = getpeercred(fd, &ucred);
+ if (r < 0)
+ return r;
+
+ return cg_pid_get_owner_uid(ucred.pid, uid);
+}
+
+_public_ int sd_peer_get_unit(int fd, char **unit) {
+ struct ucred ucred;
+ int r;
+
+ assert_return(fd >= 0, -EBADF);
+ assert_return(unit, -EINVAL);
+
+ r = getpeercred(fd, &ucred);
+ if (r < 0)
+ return r;
+
+ return cg_pid_get_unit(ucred.pid, unit);
+}
+
+_public_ int sd_peer_get_user_unit(int fd, char **unit) {
+ struct ucred ucred;
+ int r;
+
+ assert_return(fd >= 0, -EBADF);
+ assert_return(unit, -EINVAL);
+
+ r = getpeercred(fd, &ucred);
+ if (r < 0)
+ return r;
+
+ return cg_pid_get_user_unit(ucred.pid, unit);
+}
+
+_public_ int sd_peer_get_machine_name(int fd, char **machine) {
+ struct ucred ucred;
+ int r;
+
+ assert_return(fd >= 0, -EBADF);
+ assert_return(machine, -EINVAL);
+
+ r = getpeercred(fd, &ucred);
+ if (r < 0)
+ return r;
+
+ return cg_pid_get_machine_name(ucred.pid, machine);
+}
+
+_public_ int sd_peer_get_slice(int fd, char **slice) {
+ struct ucred ucred;
+ int r;
+
+ assert_return(fd >= 0, -EBADF);
+ assert_return(slice, -EINVAL);
+
+ r = getpeercred(fd, &ucred);
+ if (r < 0)
+ return r;
+
+ return cg_pid_get_slice(ucred.pid, slice);
+}
+
+_public_ int sd_peer_get_user_slice(int fd, char **slice) {
+ struct ucred ucred;
+ int r;
+
+ assert_return(fd >= 0, -EBADF);
+ assert_return(slice, -EINVAL);
+
+ r = getpeercred(fd, &ucred);
+ if (r < 0)
+ return r;
+
+ return cg_pid_get_user_slice(ucred.pid, slice);
+}
+
+_public_ int sd_peer_get_cgroup(int fd, char **cgroup) {
+ struct ucred ucred;
+ int r;
+
+ assert_return(fd >= 0, -EBADF);
+ assert_return(cgroup, -EINVAL);
+
+ r = getpeercred(fd, &ucred);
+ if (r < 0)
+ return r;
+
+ return sd_pid_get_cgroup(ucred.pid, cgroup);
+}
+
+static int file_of_uid(uid_t uid, char **p) {
+
+ assert_return(uid_is_valid(uid), -EINVAL);
+ assert(p);
+
+ if (asprintf(p, "/run/systemd/users/" UID_FMT, uid) < 0)
+ return -ENOMEM;
+
+ return 0;
+}
+
+_public_ int sd_uid_get_state(uid_t uid, char**state) {
+ _cleanup_free_ char *p = NULL;
+ char *s = NULL;
+ int r;
+
+ assert_return(state, -EINVAL);
+
+ r = file_of_uid(uid, &p);
+ if (r < 0)
+ return r;
+
+ r = parse_env_file(p, NEWLINE, "STATE", &s, NULL);
+ if (r == -ENOENT) {
+ free(s);
+ s = strdup("offline");
+ if (!s)
+ return -ENOMEM;
+
+ }
+ if (r < 0) {
+ free(s);
+ return r;
+ }
+ if (isempty(s)) {
+ free(s);
+ return -EIO;
+ }
+
+ *state = s;
+ return 0;
+}
+
+_public_ int sd_uid_get_display(uid_t uid, char **session) {
+ _cleanup_free_ char *p = NULL, *s = NULL;
+ int r;
+
+ assert_return(session, -EINVAL);
+
+ r = file_of_uid(uid, &p);
+ if (r < 0)
+ return r;
+
+ r = parse_env_file(p, NEWLINE, "DISPLAY", &s, NULL);
+ if (r == -ENOENT)
+ return -ENODATA;
+ if (r < 0)
+ return r;
+ if (isempty(s))
+ return -ENODATA;
+
+ *session = s;
+ s = NULL;
+
+ return 0;
+}
+
+static int file_of_seat(const char *seat, char **_p) {
+ char *p;
+ int r;
+
+ assert(_p);
+
+ if (seat) {
+ if (!filename_is_valid(seat))
+ return -EINVAL;
+
+ p = strappend("/run/systemd/seats/", seat);
+ } else {
+ _cleanup_free_ char *buf = NULL;
+
+ r = sd_session_get_seat(NULL, &buf);
+ if (r < 0)
+ return r;
+
+ p = strappend("/run/systemd/seats/", buf);
+ }
+
+ if (!p)
+ return -ENOMEM;
+
+ *_p = p;
+ p = NULL;
+ return 0;
+}
+
+_public_ int sd_uid_is_on_seat(uid_t uid, int require_active, const char *seat) {
+ _cleanup_free_ char *t = NULL, *s = NULL, *p = NULL;
+ size_t l;
+ int r;
+ const char *word, *variable, *state;
+
+ assert_return(uid_is_valid(uid), -EINVAL);
+
+ r = file_of_seat(seat, &p);
+ if (r < 0)
+ return r;
+
+ variable = require_active ? "ACTIVE_UID" : "UIDS";
+
+ r = parse_env_file(p, NEWLINE, variable, &s, NULL);
+ if (r == -ENOENT)
+ return 0;
+ if (r < 0)
+ return r;
+ if (isempty(s))
+ return 0;
+
+ if (asprintf(&t, UID_FMT, uid) < 0)
+ return -ENOMEM;
+
+ FOREACH_WORD(word, l, s, state)
+ if (strneq(t, word, l))
+ return 1;
+
+ return 0;
+}
+
+static int uid_get_array(uid_t uid, const char *variable, char ***array) {
+ _cleanup_free_ char *p = NULL, *s = NULL;
+ char **a;
+ int r;
+
+ assert(variable);
+
+ r = file_of_uid(uid, &p);
+ if (r < 0)
+ return r;
+
+ r = parse_env_file(p, NEWLINE, variable, &s, NULL);
+ if (r == -ENOENT || (r >= 0 && isempty(s))) {
+ if (array)
+ *array = NULL;
+ return 0;
+ }
+ if (r < 0)
+ return r;
+
+ a = strv_split(s, " ");
+ if (!a)
+ return -ENOMEM;
+
+ strv_uniq(a);
+ r = strv_length(a);
+
+ if (array)
+ *array = a;
+ else
+ strv_free(a);
+
+ return r;
+}
+
+_public_ int sd_uid_get_sessions(uid_t uid, int require_active, char ***sessions) {
+ return uid_get_array(
+ uid,
+ require_active == 0 ? "ONLINE_SESSIONS" :
+ require_active > 0 ? "ACTIVE_SESSIONS" :
+ "SESSIONS",
+ sessions);
+}
+
+_public_ int sd_uid_get_seats(uid_t uid, int require_active, char ***seats) {
+ return uid_get_array(
+ uid,
+ require_active == 0 ? "ONLINE_SEATS" :
+ require_active > 0 ? "ACTIVE_SEATS" :
+ "SEATS",
+ seats);
+}
+
+static int file_of_session(const char *session, char **_p) {
+ char *p;
+ int r;
+
+ assert(_p);
+
+ if (session) {
+ if (!session_id_valid(session))
+ return -EINVAL;
+
+ p = strappend("/run/systemd/sessions/", session);
+ } else {
+ _cleanup_free_ char *buf = NULL;
+
+ r = sd_pid_get_session(0, &buf);
+ if (r < 0)
+ return r;
+
+ p = strappend("/run/systemd/sessions/", buf);
+ }
+
+ if (!p)
+ return -ENOMEM;
+
+ *_p = p;
+ return 0;
+}
+
+_public_ int sd_session_is_active(const char *session) {
+ _cleanup_free_ char *p = NULL, *s = NULL;
+ int r;
+
+ r = file_of_session(session, &p);
+ if (r < 0)
+ return r;
+
+ r = parse_env_file(p, NEWLINE, "ACTIVE", &s, NULL);
+ if (r == -ENOENT)
+ return -ENXIO;
+ if (r < 0)
+ return r;
+ if (isempty(s))
+ return -EIO;
+
+ return parse_boolean(s);
+}
+
+_public_ int sd_session_is_remote(const char *session) {
+ _cleanup_free_ char *p = NULL, *s = NULL;
+ int r;
+
+ r = file_of_session(session, &p);
+ if (r < 0)
+ return r;
+
+ r = parse_env_file(p, NEWLINE, "REMOTE", &s, NULL);
+ if (r == -ENOENT)
+ return -ENXIO;
+ if (r < 0)
+ return r;
+ if (isempty(s))
+ return -ENODATA;
+
+ return parse_boolean(s);
+}
+
+_public_ int sd_session_get_state(const char *session, char **state) {
+ _cleanup_free_ char *p = NULL, *s = NULL;
+ int r;
+
+ assert_return(state, -EINVAL);
+
+ r = file_of_session(session, &p);
+ if (r < 0)
+ return r;
+
+ r = parse_env_file(p, NEWLINE, "STATE", &s, NULL);
+ if (r == -ENOENT)
+ return -ENXIO;
+ if (r < 0)
+ return r;
+ if (isempty(s))
+ return -EIO;
+
+ *state = s;
+ s = NULL;
+
+ return 0;
+}
+
+_public_ int sd_session_get_uid(const char *session, uid_t *uid) {
+ int r;
+ _cleanup_free_ char *p = NULL, *s = NULL;
+
+ assert_return(uid, -EINVAL);
+
+ r = file_of_session(session, &p);
+ if (r < 0)
+ return r;
+
+ r = parse_env_file(p, NEWLINE, "UID", &s, NULL);
+ if (r == -ENOENT)
+ return -ENXIO;
+ if (r < 0)
+ return r;
+ if (isempty(s))
+ return -EIO;
+
+ return parse_uid(s, uid);
+}
+
+static int session_get_string(const char *session, const char *field, char **value) {
+ _cleanup_free_ char *p = NULL, *s = NULL;
+ int r;
+
+ assert_return(value, -EINVAL);
+ assert(field);
+
+ r = file_of_session(session, &p);
+ if (r < 0)
+ return r;
+
+ r = parse_env_file(p, NEWLINE, field, &s, NULL);
+ if (r == -ENOENT)
+ return -ENXIO;
+ if (r < 0)
+ return r;
+ if (isempty(s))
+ return -ENODATA;
+
+ *value = s;
+ s = NULL;
+ return 0;
+}
+
+_public_ int sd_session_get_seat(const char *session, char **seat) {
+ return session_get_string(session, "SEAT", seat);
+}
+
+_public_ int sd_session_get_tty(const char *session, char **tty) {
+ return session_get_string(session, "TTY", tty);
+}
+
+_public_ int sd_session_get_vt(const char *session, unsigned *vtnr) {
+ _cleanup_free_ char *vtnr_string = NULL;
+ unsigned u;
+ int r;
+
+ assert_return(vtnr, -EINVAL);
+
+ r = session_get_string(session, "VTNR", &vtnr_string);
+ if (r < 0)
+ return r;
+
+ r = safe_atou(vtnr_string, &u);
+ if (r < 0)
+ return r;
+
+ *vtnr = u;
+ return 0;
+}
+
+_public_ int sd_session_get_service(const char *session, char **service) {
+ return session_get_string(session, "SERVICE", service);
+}
+
+_public_ int sd_session_get_type(const char *session, char **type) {
+ return session_get_string(session, "TYPE", type);
+}
+
+_public_ int sd_session_get_class(const char *session, char **class) {
+ return session_get_string(session, "CLASS", class);
+}
+
+_public_ int sd_session_get_desktop(const char *session, char **desktop) {
+ _cleanup_free_ char *escaped = NULL;
+ char *t;
+ int r;
+
+ assert_return(desktop, -EINVAL);
+
+ r = session_get_string(session, "DESKTOP", &escaped);
+ if (r < 0)
+ return r;
+
+ r = cunescape(escaped, 0, &t);
+ if (r < 0)
+ return r;
+
+ *desktop = t;
+ return 0;
+}
+
+_public_ int sd_session_get_display(const char *session, char **display) {
+ return session_get_string(session, "DISPLAY", display);
+}
+
+_public_ int sd_session_get_remote_user(const char *session, char **remote_user) {
+ return session_get_string(session, "REMOTE_USER", remote_user);
+}
+
+_public_ int sd_session_get_remote_host(const char *session, char **remote_host) {
+ return session_get_string(session, "REMOTE_HOST", remote_host);
+}
+
+_public_ int sd_seat_get_active(const char *seat, char **session, uid_t *uid) {
+ _cleanup_free_ char *p = NULL, *s = NULL, *t = NULL;
+ int r;
+
+ assert_return(session || uid, -EINVAL);
+
+ r = file_of_seat(seat, &p);
+ if (r < 0)
+ return r;
+
+ r = parse_env_file(p, NEWLINE,
+ "ACTIVE", &s,
+ "ACTIVE_UID", &t,
+ NULL);
+ if (r == -ENOENT)
+ return -ENXIO;
+ if (r < 0)
+ return r;
+
+ if (session && !s)
+ return -ENODATA;
+
+ if (uid && !t)
+ return -ENODATA;
+
+ if (uid && t) {
+ r = parse_uid(t, uid);
+ if (r < 0)
+ return r;
+ }
+
+ if (session && s) {
+ *session = s;
+ s = NULL;
+ }
+
+ return 0;
+}
+
+_public_ int sd_seat_get_sessions(const char *seat, char ***sessions, uid_t **uids, unsigned *n_uids) {
+ _cleanup_free_ char *p = NULL, *s = NULL, *t = NULL;
+ _cleanup_strv_free_ char **a = NULL;
+ _cleanup_free_ uid_t *b = NULL;
+ unsigned n = 0;
+ int r;
+
+ r = file_of_seat(seat, &p);
+ if (r < 0)
+ return r;
+
+ r = parse_env_file(p, NEWLINE,
+ "SESSIONS", &s,
+ "ACTIVE_SESSIONS", &t,
+ NULL);
+ if (r == -ENOENT)
+ return -ENXIO;
+ if (r < 0)
+ return r;
+
+ if (s) {
+ a = strv_split(s, " ");
+ if (!a)
+ return -ENOMEM;
+ }
+
+ if (uids && t) {
+ const char *word, *state;
+ size_t l;
+
+ FOREACH_WORD(word, l, t, state)
+ n++;
+
+ if (n > 0) {
+ unsigned i = 0;
+
+ b = new(uid_t, n);
+ if (!b)
+ return -ENOMEM;
+
+ FOREACH_WORD(word, l, t, state) {
+ _cleanup_free_ char *k = NULL;
+
+ k = strndup(word, l);
+ if (!k)
+ return -ENOMEM;
+
+ r = parse_uid(k, b + i);
+ if (r < 0)
+ continue;
+
+ i++;
+ }
+ }
+ }
+
+ r = strv_length(a);
+
+ if (sessions) {
+ *sessions = a;
+ a = NULL;
+ }
+
+ if (uids) {
+ *uids = b;
+ b = NULL;
+ }
+
+ if (n_uids)
+ *n_uids = n;
+
+ return r;
+}
+
+static int seat_get_can(const char *seat, const char *variable) {
+ _cleanup_free_ char *p = NULL, *s = NULL;
+ int r;
+
+ assert(variable);
+
+ r = file_of_seat(seat, &p);
+ if (r < 0)
+ return r;
+
+ r = parse_env_file(p, NEWLINE,
+ variable, &s,
+ NULL);
+ if (r == -ENOENT)
+ return -ENXIO;
+ if (r < 0)
+ return r;
+ if (isempty(s))
+ return -ENODATA;
+
+ return parse_boolean(s);
+}
+
+_public_ int sd_seat_can_multi_session(const char *seat) {
+ return seat_get_can(seat, "CAN_MULTI_SESSION");
+}
+
+_public_ int sd_seat_can_tty(const char *seat) {
+ return seat_get_can(seat, "CAN_TTY");
+}
+
+_public_ int sd_seat_can_graphical(const char *seat) {
+ return seat_get_can(seat, "CAN_GRAPHICAL");
+}
+
+_public_ int sd_get_seats(char ***seats) {
+ return get_files_in_directory("/run/systemd/seats/", seats);
+}
+
+_public_ int sd_get_sessions(char ***sessions) {
+ return get_files_in_directory("/run/systemd/sessions/", sessions);
+}
+
+_public_ int sd_get_uids(uid_t **users) {
+ _cleanup_closedir_ DIR *d;
+ int r = 0;
+ unsigned n = 0;
+ _cleanup_free_ uid_t *l = NULL;
+
+ d = opendir("/run/systemd/users/");
+ if (!d)
+ return -errno;
+
+ for (;;) {
+ struct dirent *de;
+ int k;
+ uid_t uid;
+
+ errno = 0;
+ de = readdir(d);
+ if (!de && errno > 0)
+ return -errno;
+
+ if (!de)
+ break;
+
+ dirent_ensure_type(d, de);
+
+ if (!dirent_is_file(de))
+ continue;
+
+ k = parse_uid(de->d_name, &uid);
+ if (k < 0)
+ continue;
+
+ if (users) {
+ if ((unsigned) r >= n) {
+ uid_t *t;
+
+ n = MAX(16, 2*r);
+ t = realloc(l, sizeof(uid_t) * n);
+ if (!t)
+ return -ENOMEM;
+
+ l = t;
+ }
+
+ assert((unsigned) r < n);
+ l[r++] = uid;
+ } else
+ r++;
+ }
+
+ if (users) {
+ *users = l;
+ l = NULL;
+ }
+
+ return r;
+}
+
+_public_ int sd_get_machine_names(char ***machines) {
+ char **l = NULL, **a, **b;
+ int r;
+
+ assert_return(machines, -EINVAL);
+
+ r = get_files_in_directory("/run/systemd/machines/", &l);
+ if (r < 0)
+ return r;
+
+ if (l) {
+ r = 0;
+
+ /* Filter out the unit: symlinks */
+ for (a = l, b = l; *a; a++) {
+ if (startswith(*a, "unit:") || !machine_name_is_valid(*a))
+ free(*a);
+ else {
+ *b = *a;
+ b++;
+ r++;
+ }
+ }
+
+ *b = NULL;
+ }
+
+ *machines = l;
+ return r;
+}
+
+_public_ int sd_machine_get_class(const char *machine, char **class) {
+ _cleanup_free_ char *c = NULL;
+ const char *p;
+ int r;
+
+ assert_return(machine_name_is_valid(machine), -EINVAL);
+ assert_return(class, -EINVAL);
+
+ p = strjoina("/run/systemd/machines/", machine);
+ r = parse_env_file(p, NEWLINE, "CLASS", &c, NULL);
+ if (r == -ENOENT)
+ return -ENXIO;
+ if (r < 0)
+ return r;
+ if (!c)
+ return -EIO;
+
+ *class = c;
+ c = NULL;
+
+ return 0;
+}
+
+_public_ int sd_machine_get_ifindices(const char *machine, int **ifindices) {
+ _cleanup_free_ char *netif = NULL;
+ size_t l, allocated = 0, nr = 0;
+ int *ni = NULL;
+ const char *p, *word, *state;
+ int r;
+
+ assert_return(machine_name_is_valid(machine), -EINVAL);
+ assert_return(ifindices, -EINVAL);
+
+ p = strjoina("/run/systemd/machines/", machine);
+ r = parse_env_file(p, NEWLINE, "NETIF", &netif, NULL);
+ if (r == -ENOENT)
+ return -ENXIO;
+ if (r < 0)
+ return r;
+ if (!netif) {
+ *ifindices = NULL;
+ return 0;
+ }
+
+ FOREACH_WORD(word, l, netif, state) {
+ char buf[l+1];
+ int ifi;
+
+ *(char*) (mempcpy(buf, word, l)) = 0;
+
+ if (parse_ifindex(buf, &ifi) < 0)
+ continue;
+
+ if (!GREEDY_REALLOC(ni, allocated, nr+1)) {
+ free(ni);
+ return -ENOMEM;
+ }
+
+ ni[nr++] = ifi;
+ }
+
+ *ifindices = ni;
+ return nr;
+}
+
+static inline int MONITOR_TO_FD(sd_login_monitor *m) {
+ return (int) (unsigned long) m - 1;
+}
+
+static inline sd_login_monitor* FD_TO_MONITOR(int fd) {
+ return (sd_login_monitor*) (unsigned long) (fd + 1);
+}
+
+_public_ int sd_login_monitor_new(const char *category, sd_login_monitor **m) {
+ int fd, k;
+ bool good = false;
+
+ assert_return(m, -EINVAL);
+
+ fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC);
+ if (fd < 0)
+ return -errno;
+
+ if (!category || streq(category, "seat")) {
+ k = inotify_add_watch(fd, "/run/systemd/seats/", IN_MOVED_TO|IN_DELETE);
+ if (k < 0) {
+ safe_close(fd);
+ return -errno;
+ }
+
+ good = true;
+ }
+
+ if (!category || streq(category, "session")) {
+ k = inotify_add_watch(fd, "/run/systemd/sessions/", IN_MOVED_TO|IN_DELETE);
+ if (k < 0) {
+ safe_close(fd);
+ return -errno;
+ }
+
+ good = true;
+ }
+
+ if (!category || streq(category, "uid")) {
+ k = inotify_add_watch(fd, "/run/systemd/users/", IN_MOVED_TO|IN_DELETE);
+ if (k < 0) {
+ safe_close(fd);
+ return -errno;
+ }
+
+ good = true;
+ }
+
+ if (!category || streq(category, "machine")) {
+ k = inotify_add_watch(fd, "/run/systemd/machines/", IN_MOVED_TO|IN_DELETE);
+ if (k < 0) {
+ safe_close(fd);
+ return -errno;
+ }
+
+ good = true;
+ }
+
+ if (!good) {
+ close_nointr(fd);
+ return -EINVAL;
+ }
+
+ *m = FD_TO_MONITOR(fd);
+ return 0;
+}
+
+_public_ sd_login_monitor* sd_login_monitor_unref(sd_login_monitor *m) {
+ int fd;
+
+ if (!m)
+ return NULL;
+
+ fd = MONITOR_TO_FD(m);
+ close_nointr(fd);
+
+ return NULL;
+}
+
+_public_ int sd_login_monitor_flush(sd_login_monitor *m) {
+
+ assert_return(m, -EINVAL);
+
+ return flush_fd(MONITOR_TO_FD(m));
+}
+
+_public_ int sd_login_monitor_get_fd(sd_login_monitor *m) {
+
+ assert_return(m, -EINVAL);
+
+ return MONITOR_TO_FD(m);
+}
+
+_public_ int sd_login_monitor_get_events(sd_login_monitor *m) {
+
+ assert_return(m, -EINVAL);
+
+ /* For now we will only return POLLIN here, since we don't
+ * need anything else ever for inotify. However, let's have
+ * this API to keep our options open should we later on need
+ * it. */
+ return POLLIN;
+}
+
+_public_ int sd_login_monitor_get_timeout(sd_login_monitor *m, uint64_t *timeout_usec) {
+
+ assert_return(m, -EINVAL);
+ assert_return(timeout_usec, -EINVAL);
+
+ /* For now we will only return (uint64_t) -1, since we don't
+ * need any timeout. However, let's have this API to keep our
+ * options open should we later on need it. */
+ *timeout_usec = (uint64_t) -1;
+ return 0;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-login/test-login.c b/src/libsystemd/libsystemd-internal/sd-login/test-login.c
new file mode 100644
index 0000000000..994c76df4a
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-login/test-login.c
@@ -0,0 +1,264 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2011 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <poll.h>
+#include <string.h>
+
+#include <systemd/sd-login.h>
+
+#include "alloc-util.h"
+#include "fd-util.h"
+#include "formats-util.h"
+#include "string-util.h"
+#include "strv.h"
+#include "util.h"
+
+static void test_login(void) {
+ _cleanup_close_pair_ int pair[2] = { -1, -1 };
+ _cleanup_free_ char *pp = NULL, *qq = NULL;
+ int r, k;
+ uid_t u, u2;
+ char *seat, *type, *class, *display, *remote_user, *remote_host, *display_session, *cgroup;
+ char *session;
+ char *state;
+ char *session2;
+ char *t;
+ char **seats, **sessions, **machines;
+ uid_t *uids;
+ unsigned n;
+ struct pollfd pollfd;
+ sd_login_monitor *m = NULL;
+
+ assert_se(sd_pid_get_session(0, &session) == 0);
+ printf("session = %s\n", session);
+
+ assert_se(sd_pid_get_owner_uid(0, &u2) == 0);
+ printf("user = "UID_FMT"\n", u2);
+
+ assert_se(sd_pid_get_cgroup(0, &cgroup) == 0);
+ printf("cgroup = %s\n", cgroup);
+ free(cgroup);
+
+ display_session = NULL;
+ r = sd_uid_get_display(u2, &display_session);
+ assert_se(r >= 0 || r == -ENODATA);
+ printf("user's display session = %s\n", strna(display_session));
+ free(display_session);
+
+ assert_se(socketpair(AF_UNIX, SOCK_STREAM, 0, pair) == 0);
+ sd_peer_get_session(pair[0], &pp);
+ sd_peer_get_session(pair[1], &qq);
+ assert_se(streq_ptr(pp, qq));
+
+ r = sd_uid_get_sessions(u2, false, &sessions);
+ assert_se(r >= 0);
+ assert_se(r == (int) strv_length(sessions));
+ assert_se(t = strv_join(sessions, ", "));
+ strv_free(sessions);
+ printf("sessions = %s\n", t);
+ free(t);
+
+ assert_se(r == sd_uid_get_sessions(u2, false, NULL));
+
+ r = sd_uid_get_seats(u2, false, &seats);
+ assert_se(r >= 0);
+ assert_se(r == (int) strv_length(seats));
+ assert_se(t = strv_join(seats, ", "));
+ strv_free(seats);
+ printf("seats = %s\n", t);
+ free(t);
+
+ assert_se(r == sd_uid_get_seats(u2, false, NULL));
+
+ r = sd_session_is_active(session);
+ assert_se(r >= 0);
+ printf("active = %s\n", yes_no(r));
+
+ r = sd_session_is_remote(session);
+ assert_se(r >= 0);
+ printf("remote = %s\n", yes_no(r));
+
+ r = sd_session_get_state(session, &state);
+ assert_se(r >= 0);
+ printf("state = %s\n", state);
+ free(state);
+
+ assert_se(sd_session_get_uid(session, &u) >= 0);
+ printf("uid = "UID_FMT"\n", u);
+ assert_se(u == u2);
+
+ assert_se(sd_session_get_type(session, &type) >= 0);
+ printf("type = %s\n", type);
+ free(type);
+
+ assert_se(sd_session_get_class(session, &class) >= 0);
+ printf("class = %s\n", class);
+ free(class);
+
+ display = NULL;
+ r = sd_session_get_display(session, &display);
+ assert_se(r >= 0 || r == -ENODATA);
+ printf("display = %s\n", strna(display));
+ free(display);
+
+ remote_user = NULL;
+ r = sd_session_get_remote_user(session, &remote_user);
+ assert_se(r >= 0 || r == -ENODATA);
+ printf("remote_user = %s\n", strna(remote_user));
+ free(remote_user);
+
+ remote_host = NULL;
+ r = sd_session_get_remote_host(session, &remote_host);
+ assert_se(r >= 0 || r == -ENODATA);
+ printf("remote_host = %s\n", strna(remote_host));
+ free(remote_host);
+
+ assert_se(sd_session_get_seat(session, &seat) >= 0);
+ printf("seat = %s\n", seat);
+
+ r = sd_seat_can_multi_session(seat);
+ assert_se(r >= 0);
+ printf("can do multi session = %s\n", yes_no(r));
+
+ r = sd_seat_can_tty(seat);
+ assert_se(r >= 0);
+ printf("can do tty = %s\n", yes_no(r));
+
+ r = sd_seat_can_graphical(seat);
+ assert_se(r >= 0);
+ printf("can do graphical = %s\n", yes_no(r));
+
+ assert_se(sd_uid_get_state(u, &state) >= 0);
+ printf("state = %s\n", state);
+
+ assert_se(sd_uid_is_on_seat(u, 0, seat) > 0);
+
+ k = sd_uid_is_on_seat(u, 1, seat);
+ assert_se(k >= 0);
+ assert_se(!!r == !!r);
+
+ assert_se(sd_seat_get_active(seat, &session2, &u2) >= 0);
+ printf("session2 = %s\n", session2);
+ printf("uid2 = "UID_FMT"\n", u2);
+
+ r = sd_seat_get_sessions(seat, &sessions, &uids, &n);
+ assert_se(r >= 0);
+ printf("n_sessions = %i\n", r);
+ assert_se(r == (int) strv_length(sessions));
+ assert_se(t = strv_join(sessions, ", "));
+ strv_free(sessions);
+ printf("sessions = %s\n", t);
+ free(t);
+ printf("uids =");
+ for (k = 0; k < (int) n; k++)
+ printf(" "UID_FMT, uids[k]);
+ printf("\n");
+ free(uids);
+
+ assert_se(sd_seat_get_sessions(seat, NULL, NULL, NULL) == r);
+
+ free(session);
+ free(state);
+ free(session2);
+ free(seat);
+
+ r = sd_get_seats(&seats);
+ assert_se(r >= 0);
+ assert_se(r == (int) strv_length(seats));
+ assert_se(t = strv_join(seats, ", "));
+ strv_free(seats);
+ printf("n_seats = %i\n", r);
+ printf("seats = %s\n", t);
+ free(t);
+
+ assert_se(sd_get_seats(NULL) == r);
+
+ r = sd_seat_get_active(NULL, &t, NULL);
+ assert_se(r >= 0);
+ printf("active session on current seat = %s\n", t);
+ free(t);
+
+ r = sd_get_sessions(&sessions);
+ assert_se(r >= 0);
+ assert_se(r == (int) strv_length(sessions));
+ assert_se(t = strv_join(sessions, ", "));
+ strv_free(sessions);
+ printf("n_sessions = %i\n", r);
+ printf("sessions = %s\n", t);
+ free(t);
+
+ assert_se(sd_get_sessions(NULL) == r);
+
+ r = sd_get_uids(&uids);
+ assert_se(r >= 0);
+
+ printf("uids =");
+ for (k = 0; k < r; k++)
+ printf(" "UID_FMT, uids[k]);
+ printf("\n");
+ free(uids);
+
+ printf("n_uids = %i\n", r);
+ assert_se(sd_get_uids(NULL) == r);
+
+ r = sd_get_machine_names(&machines);
+ assert_se(r >= 0);
+ assert_se(r == (int) strv_length(machines));
+ assert_se(t = strv_join(machines, ", "));
+ strv_free(machines);
+ printf("n_machines = %i\n", r);
+ printf("machines = %s\n", t);
+ free(t);
+
+ r = sd_login_monitor_new("session", &m);
+ assert_se(r >= 0);
+
+ for (n = 0; n < 5; n++) {
+ usec_t timeout, nw;
+
+ zero(pollfd);
+ assert_se((pollfd.fd = sd_login_monitor_get_fd(m)) >= 0);
+ assert_se((pollfd.events = sd_login_monitor_get_events(m)) >= 0);
+
+ assert_se(sd_login_monitor_get_timeout(m, &timeout) >= 0);
+
+ nw = now(CLOCK_MONOTONIC);
+
+ r = poll(&pollfd, 1,
+ timeout == (uint64_t) -1 ? -1 :
+ timeout > nw ? (int) ((timeout - nw) / 1000) :
+ 0);
+
+ assert_se(r >= 0);
+
+ sd_login_monitor_flush(m);
+ printf("Wake!\n");
+ }
+
+ sd_login_monitor_unref(m);
+}
+
+int main(int argc, char* argv[]) {
+ log_parse_environment();
+ log_open();
+
+ test_login();
+
+ return 0;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-netlink/netlink-internal.h b/src/libsystemd/libsystemd-internal/sd-netlink/netlink-internal.h
new file mode 100644
index 0000000000..1d29c3a369
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-netlink/netlink-internal.h
@@ -0,0 +1,137 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Tom Gundersen <teg@jklm.no>
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <linux/netlink.h>
+
+#include <systemd/sd-netlink.h>
+
+#include "list.h"
+#include "netlink-types.h"
+#include "prioq.h"
+#include "refcnt.h"
+
+#define RTNL_DEFAULT_TIMEOUT ((usec_t) (25 * USEC_PER_SEC))
+
+#define RTNL_WQUEUE_MAX 1024
+#define RTNL_RQUEUE_MAX 64*1024
+
+#define RTNL_CONTAINER_DEPTH 32
+
+struct reply_callback {
+ sd_netlink_message_handler_t callback;
+ void *userdata;
+ usec_t timeout;
+ uint64_t serial;
+ unsigned prioq_idx;
+};
+
+struct match_callback {
+ sd_netlink_message_handler_t callback;
+ uint16_t type;
+ void *userdata;
+
+ LIST_FIELDS(struct match_callback, match_callbacks);
+};
+
+struct sd_netlink {
+ RefCount n_ref;
+
+ int fd;
+
+ union {
+ struct sockaddr sa;
+ struct sockaddr_nl nl;
+ } sockaddr;
+
+ Hashmap *broadcast_group_refs;
+ bool broadcast_group_dont_leave:1; /* until we can rely on 4.2 */
+
+ sd_netlink_message **rqueue;
+ unsigned rqueue_size;
+ size_t rqueue_allocated;
+
+ sd_netlink_message **rqueue_partial;
+ unsigned rqueue_partial_size;
+ size_t rqueue_partial_allocated;
+
+ struct nlmsghdr *rbuffer;
+ size_t rbuffer_allocated;
+
+ bool processing:1;
+
+ uint32_t serial;
+
+ struct Prioq *reply_callbacks_prioq;
+ Hashmap *reply_callbacks;
+
+ LIST_HEAD(struct match_callback, match_callbacks);
+
+ pid_t original_pid;
+
+ sd_event_source *io_event_source;
+ sd_event_source *time_event_source;
+ sd_event_source *exit_event_source;
+ sd_event *event;
+};
+
+struct netlink_attribute {
+ size_t offset; /* offset from hdr to attribute */
+ bool nested:1;
+ bool net_byteorder:1;
+};
+
+struct netlink_container {
+ const struct NLTypeSystem *type_system; /* the type system of the container */
+ size_t offset; /* offset from hdr to the start of the container */
+ struct netlink_attribute *attributes;
+ unsigned short n_attributes; /* number of attributes in container */
+};
+
+struct sd_netlink_message {
+ RefCount n_ref;
+
+ sd_netlink *rtnl;
+
+ struct nlmsghdr *hdr;
+ struct netlink_container containers[RTNL_CONTAINER_DEPTH];
+ unsigned n_containers; /* number of containers */
+ bool sealed:1;
+ bool broadcast:1;
+
+ sd_netlink_message *next; /* next in a chain of multi-part messages */
+};
+
+int message_new(sd_netlink *rtnl, sd_netlink_message **ret, uint16_t type);
+int message_new_empty(sd_netlink *rtnl, sd_netlink_message **ret);
+
+int socket_open(int family);
+int socket_bind(sd_netlink *nl);
+int socket_broadcast_group_ref(sd_netlink *nl, unsigned group);
+int socket_broadcast_group_unref(sd_netlink *nl, unsigned group);
+int socket_write_message(sd_netlink *nl, sd_netlink_message *m);
+int socket_read_message(sd_netlink *nl);
+
+int rtnl_rqueue_make_room(sd_netlink *rtnl);
+int rtnl_rqueue_partial_make_room(sd_netlink *rtnl);
+
+/* Make sure callbacks don't destroy the rtnl connection */
+#define NETLINK_DONT_DESTROY(rtnl) \
+ _cleanup_(sd_netlink_unrefp) _unused_ sd_netlink *_dont_destroy_##rtnl = sd_netlink_ref(rtnl)
diff --git a/src/libsystemd/libsystemd-internal/sd-netlink/netlink-message.c b/src/libsystemd/libsystemd-internal/sd-netlink/netlink-message.c
new file mode 100644
index 0000000000..c00785ea41
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-netlink/netlink-message.c
@@ -0,0 +1,961 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Tom Gundersen <teg@jklm.no>
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <netinet/in.h>
+#include <stdbool.h>
+#include <unistd.h>
+
+#include <systemd/sd-netlink.h>
+
+#include "alloc-util.h"
+#include "formats-util.h"
+#include "missing.h"
+#include "netlink-internal.h"
+#include "netlink-types.h"
+#include "netlink-util.h"
+#include "refcnt.h"
+#include "socket-util.h"
+#include "util.h"
+
+#define GET_CONTAINER(m, i) ((i) < (m)->n_containers ? (struct rtattr*)((uint8_t*)(m)->hdr + (m)->containers[i].offset) : NULL)
+#define PUSH_CONTAINER(m, new) (m)->container_offsets[(m)->n_containers++] = (uint8_t*)(new) - (uint8_t*)(m)->hdr;
+
+#define RTA_TYPE(rta) ((rta)->rta_type & NLA_TYPE_MASK)
+#define RTA_FLAGS(rta) ((rta)->rta_type & ~NLA_TYPE_MASK)
+
+int message_new_empty(sd_netlink *rtnl, sd_netlink_message **ret) {
+ sd_netlink_message *m;
+
+ assert_return(ret, -EINVAL);
+
+ /* Note that 'rtnl' is currently unused, if we start using it internally
+ we must take care to avoid problems due to mutual references between
+ buses and their queued messages. See sd-bus.
+ */
+
+ m = new0(sd_netlink_message, 1);
+ if (!m)
+ return -ENOMEM;
+
+ m->n_ref = REFCNT_INIT;
+
+ m->sealed = false;
+
+ *ret = m;
+
+ return 0;
+}
+
+int message_new(sd_netlink *rtnl, sd_netlink_message **ret, uint16_t type) {
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
+ const NLType *nl_type;
+ size_t size;
+ int r;
+
+ r = type_system_get_type(&type_system_root, &nl_type, type);
+ if (r < 0)
+ return r;
+
+ if (type_get_type(nl_type) != NETLINK_TYPE_NESTED)
+ return -EINVAL;
+
+ r = message_new_empty(rtnl, &m);
+ if (r < 0)
+ return r;
+
+ size = NLMSG_SPACE(type_get_size(nl_type));
+
+ assert(size >= sizeof(struct nlmsghdr));
+ m->hdr = malloc0(size);
+ if (!m->hdr)
+ return -ENOMEM;
+
+ m->hdr->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
+
+ type_get_type_system(nl_type, &m->containers[0].type_system);
+ m->hdr->nlmsg_len = size;
+ m->hdr->nlmsg_type = type;
+
+ *ret = m;
+ m = NULL;
+
+ return 0;
+}
+
+int sd_netlink_message_request_dump(sd_netlink_message *m, int dump) {
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(m->hdr->nlmsg_type == RTM_GETLINK ||
+ m->hdr->nlmsg_type == RTM_GETADDR ||
+ m->hdr->nlmsg_type == RTM_GETROUTE ||
+ m->hdr->nlmsg_type == RTM_GETNEIGH,
+ -EINVAL);
+
+ SET_FLAG(m->hdr->nlmsg_flags, NLM_F_DUMP, dump);
+
+ return 0;
+}
+
+sd_netlink_message *sd_netlink_message_ref(sd_netlink_message *m) {
+ if (m)
+ assert_se(REFCNT_INC(m->n_ref) >= 2);
+
+ return m;
+}
+
+sd_netlink_message *sd_netlink_message_unref(sd_netlink_message *m) {
+ if (m && REFCNT_DEC(m->n_ref) == 0) {
+ unsigned i;
+
+ free(m->hdr);
+
+ for (i = 0; i <= m->n_containers; i++)
+ free(m->containers[i].attributes);
+
+ sd_netlink_message_unref(m->next);
+
+ free(m);
+ }
+
+ return NULL;
+}
+
+int sd_netlink_message_get_type(sd_netlink_message *m, uint16_t *type) {
+ assert_return(m, -EINVAL);
+ assert_return(type, -EINVAL);
+
+ *type = m->hdr->nlmsg_type;
+
+ return 0;
+}
+
+int sd_netlink_message_set_flags(sd_netlink_message *m, uint16_t flags) {
+ assert_return(m, -EINVAL);
+ assert_return(flags, -EINVAL);
+
+ m->hdr->nlmsg_flags = flags;
+
+ return 0;
+}
+
+int sd_netlink_message_is_broadcast(sd_netlink_message *m) {
+ assert_return(m, -EINVAL);
+
+ return m->broadcast;
+}
+
+/* If successful the updated message will be correctly aligned, if
+ unsuccessful the old message is untouched. */
+static int add_rtattr(sd_netlink_message *m, unsigned short type, const void *data, size_t data_length) {
+ uint32_t rta_length;
+ size_t message_length, padding_length;
+ struct nlmsghdr *new_hdr;
+ struct rtattr *rta;
+ char *padding;
+ unsigned i;
+ int offset;
+
+ assert(m);
+ assert(m->hdr);
+ assert(!m->sealed);
+ assert(NLMSG_ALIGN(m->hdr->nlmsg_len) == m->hdr->nlmsg_len);
+ assert(!data || data_length);
+
+ /* get offset of the new attribute */
+ offset = m->hdr->nlmsg_len;
+
+ /* get the size of the new rta attribute (with padding at the end) */
+ rta_length = RTA_LENGTH(data_length);
+
+ /* get the new message size (with padding at the end) */
+ message_length = offset + RTA_ALIGN(rta_length);
+
+ /* realloc to fit the new attribute */
+ new_hdr = realloc(m->hdr, message_length);
+ if (!new_hdr)
+ return -ENOMEM;
+ m->hdr = new_hdr;
+
+ /* get pointer to the attribute we are about to add */
+ rta = (struct rtattr *) ((uint8_t *) m->hdr + offset);
+
+ /* if we are inside containers, extend them */
+ for (i = 0; i < m->n_containers; i++)
+ GET_CONTAINER(m, i)->rta_len += message_length - offset;
+
+ /* fill in the attribute */
+ rta->rta_type = type;
+ rta->rta_len = rta_length;
+ if (data)
+ /* we don't deal with the case where the user lies about the type
+ * and gives us too little data (so don't do that)
+ */
+ padding = mempcpy(RTA_DATA(rta), data, data_length);
+
+ else
+ /* if no data was passed, make sure we still initialize the padding
+ note that we can have data_length > 0 (used by some containers) */
+ padding = RTA_DATA(rta);
+
+ /* make sure also the padding at the end of the message is initialized */
+ padding_length = (uint8_t*)m->hdr + message_length - (uint8_t*)padding;
+ memzero(padding, padding_length);
+
+ /* update message size */
+ m->hdr->nlmsg_len = message_length;
+
+ return offset;
+}
+
+static int message_attribute_has_type(sd_netlink_message *m, size_t *out_size, uint16_t attribute_type, uint16_t data_type) {
+ const NLType *type;
+ int r;
+
+ assert(m);
+
+ r = type_system_get_type(m->containers[m->n_containers].type_system, &type, attribute_type);
+ if (r < 0)
+ return r;
+
+ if (type_get_type(type) != data_type)
+ return -EINVAL;
+
+ if (out_size)
+ *out_size = type_get_size(type);
+ return 0;
+}
+
+int sd_netlink_message_append_string(sd_netlink_message *m, unsigned short type, const char *data) {
+ size_t length, size;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(data, -EINVAL);
+
+ r = message_attribute_has_type(m, &size, type, NETLINK_TYPE_STRING);
+ if (r < 0)
+ return r;
+
+ if (size) {
+ length = strnlen(data, size+1);
+ if (length > size)
+ return -EINVAL;
+ } else
+ length = strlen(data);
+
+ r = add_rtattr(m, type, data, length + 1);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+int sd_netlink_message_append_flag(sd_netlink_message *m, unsigned short type) {
+ size_t size;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+
+ r = message_attribute_has_type(m, &size, type, NETLINK_TYPE_FLAG);
+ if (r < 0)
+ return r;
+
+ r = add_rtattr(m, type, NULL, 0);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+int sd_netlink_message_append_u8(sd_netlink_message *m, unsigned short type, uint8_t data) {
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+
+ r = message_attribute_has_type(m, NULL, type, NETLINK_TYPE_U8);
+ if (r < 0)
+ return r;
+
+ r = add_rtattr(m, type, &data, sizeof(uint8_t));
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+
+int sd_netlink_message_append_u16(sd_netlink_message *m, unsigned short type, uint16_t data) {
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+
+ r = message_attribute_has_type(m, NULL, type, NETLINK_TYPE_U16);
+ if (r < 0)
+ return r;
+
+ r = add_rtattr(m, type, &data, sizeof(uint16_t));
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+int sd_netlink_message_append_u32(sd_netlink_message *m, unsigned short type, uint32_t data) {
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+
+ r = message_attribute_has_type(m, NULL, type, NETLINK_TYPE_U32);
+ if (r < 0)
+ return r;
+
+ r = add_rtattr(m, type, &data, sizeof(uint32_t));
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+int sd_netlink_message_append_data(sd_netlink_message *m, unsigned short type, const void *data, size_t len) {
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+
+ r = add_rtattr(m, type, data, len);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+int sd_netlink_message_append_in_addr(sd_netlink_message *m, unsigned short type, const struct in_addr *data) {
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(data, -EINVAL);
+
+ r = message_attribute_has_type(m, NULL, type, NETLINK_TYPE_IN_ADDR);
+ if (r < 0)
+ return r;
+
+ r = add_rtattr(m, type, data, sizeof(struct in_addr));
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+int sd_netlink_message_append_in6_addr(sd_netlink_message *m, unsigned short type, const struct in6_addr *data) {
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(data, -EINVAL);
+
+ r = message_attribute_has_type(m, NULL, type, NETLINK_TYPE_IN_ADDR);
+ if (r < 0)
+ return r;
+
+ r = add_rtattr(m, type, data, sizeof(struct in6_addr));
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+int sd_netlink_message_append_ether_addr(sd_netlink_message *m, unsigned short type, const struct ether_addr *data) {
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(data, -EINVAL);
+
+ r = message_attribute_has_type(m, NULL, type, NETLINK_TYPE_ETHER_ADDR);
+ if (r < 0)
+ return r;
+
+ r = add_rtattr(m, type, data, ETH_ALEN);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+int sd_netlink_message_append_cache_info(sd_netlink_message *m, unsigned short type, const struct ifa_cacheinfo *info) {
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(info, -EINVAL);
+
+ r = message_attribute_has_type(m, NULL, type, NETLINK_TYPE_CACHE_INFO);
+ if (r < 0)
+ return r;
+
+ r = add_rtattr(m, type, info, sizeof(struct ifa_cacheinfo));
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+int sd_netlink_message_open_container(sd_netlink_message *m, unsigned short type) {
+ size_t size;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(m->n_containers < RTNL_CONTAINER_DEPTH, -ERANGE);
+
+ r = message_attribute_has_type(m, &size, type, NETLINK_TYPE_NESTED);
+ if (r < 0) {
+ const NLTypeSystemUnion *type_system_union;
+ int family;
+
+ r = message_attribute_has_type(m, &size, type, NETLINK_TYPE_UNION);
+ if (r < 0)
+ return r;
+
+ r = sd_rtnl_message_get_family(m, &family);
+ if (r < 0)
+ return r;
+
+ r = type_system_get_type_system_union(m->containers[m->n_containers].type_system, &type_system_union, type);
+ if (r < 0)
+ return r;
+
+ r = type_system_union_protocol_get_type_system(type_system_union,
+ &m->containers[m->n_containers + 1].type_system,
+ family);
+ if (r < 0)
+ return r;
+ } else {
+ r = type_system_get_type_system(m->containers[m->n_containers].type_system,
+ &m->containers[m->n_containers + 1].type_system,
+ type);
+ if (r < 0)
+ return r;
+ }
+
+ r = add_rtattr(m, type | NLA_F_NESTED, NULL, size);
+ if (r < 0)
+ return r;
+
+ m->containers[m->n_containers++].offset = r;
+
+ return 0;
+}
+
+int sd_netlink_message_open_container_union(sd_netlink_message *m, unsigned short type, const char *key) {
+ const NLTypeSystemUnion *type_system_union;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+
+ r = type_system_get_type_system_union(m->containers[m->n_containers].type_system, &type_system_union, type);
+ if (r < 0)
+ return r;
+
+ r = type_system_union_get_type_system(type_system_union,
+ &m->containers[m->n_containers + 1].type_system,
+ key);
+ if (r < 0)
+ return r;
+
+ r = sd_netlink_message_append_string(m, type_system_union->match, key);
+ if (r < 0)
+ return r;
+
+ /* do we evere need non-null size */
+ r = add_rtattr(m, type | NLA_F_NESTED, NULL, 0);
+ if (r < 0)
+ return r;
+
+ m->containers[m->n_containers++].offset = r;
+
+ return 0;
+}
+
+
+int sd_netlink_message_close_container(sd_netlink_message *m) {
+ assert_return(m, -EINVAL);
+ assert_return(!m->sealed, -EPERM);
+ assert_return(m->n_containers > 0, -EINVAL);
+
+ m->containers[m->n_containers].type_system = NULL;
+ m->n_containers--;
+
+ return 0;
+}
+
+static int netlink_message_read_internal(sd_netlink_message *m, unsigned short type, void **data, bool *net_byteorder) {
+ struct netlink_attribute *attribute;
+ struct rtattr *rta;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->sealed, -EPERM);
+ assert_return(data, -EINVAL);
+ assert(m->n_containers < RTNL_CONTAINER_DEPTH);
+ assert(m->containers[m->n_containers].attributes);
+ assert(type < m->containers[m->n_containers].n_attributes);
+
+ attribute = &m->containers[m->n_containers].attributes[type];
+
+ if (!attribute->offset)
+ return -ENODATA;
+
+ rta = (struct rtattr*)((uint8_t *) m->hdr + attribute->offset);
+
+ *data = RTA_DATA(rta);
+
+ if (net_byteorder)
+ *net_byteorder = attribute->net_byteorder;
+
+ return RTA_PAYLOAD(rta);
+}
+
+int sd_netlink_message_read_string(sd_netlink_message *m, unsigned short type, const char **data) {
+ int r;
+ void *attr_data;
+
+ assert_return(m, -EINVAL);
+
+ r = message_attribute_has_type(m, NULL, type, NETLINK_TYPE_STRING);
+ if (r < 0)
+ return r;
+
+ r = netlink_message_read_internal(m, type, &attr_data, NULL);
+ if (r < 0)
+ return r;
+ else if (strnlen(attr_data, r) >= (size_t) r)
+ return -EIO;
+
+ if (data)
+ *data = (const char *) attr_data;
+
+ return 0;
+}
+
+int sd_netlink_message_read_u8(sd_netlink_message *m, unsigned short type, uint8_t *data) {
+ int r;
+ void *attr_data;
+
+ assert_return(m, -EINVAL);
+
+ r = message_attribute_has_type(m, NULL, type, NETLINK_TYPE_U8);
+ if (r < 0)
+ return r;
+
+ r = netlink_message_read_internal(m, type, &attr_data, NULL);
+ if (r < 0)
+ return r;
+ else if ((size_t) r < sizeof(uint8_t))
+ return -EIO;
+
+ if (data)
+ *data = *(uint8_t *) attr_data;
+
+ return 0;
+}
+
+int sd_netlink_message_read_u16(sd_netlink_message *m, unsigned short type, uint16_t *data) {
+ void *attr_data;
+ bool net_byteorder;
+ int r;
+
+ assert_return(m, -EINVAL);
+
+ r = message_attribute_has_type(m, NULL, type, NETLINK_TYPE_U16);
+ if (r < 0)
+ return r;
+
+ r = netlink_message_read_internal(m, type, &attr_data, &net_byteorder);
+ if (r < 0)
+ return r;
+ else if ((size_t) r < sizeof(uint16_t))
+ return -EIO;
+
+ if (data) {
+ if (net_byteorder)
+ *data = be16toh(*(uint16_t *) attr_data);
+ else
+ *data = *(uint16_t *) attr_data;
+ }
+
+ return 0;
+}
+
+int sd_netlink_message_read_u32(sd_netlink_message *m, unsigned short type, uint32_t *data) {
+ void *attr_data;
+ bool net_byteorder;
+ int r;
+
+ assert_return(m, -EINVAL);
+
+ r = message_attribute_has_type(m, NULL, type, NETLINK_TYPE_U32);
+ if (r < 0)
+ return r;
+
+ r = netlink_message_read_internal(m, type, &attr_data, &net_byteorder);
+ if (r < 0)
+ return r;
+ else if ((size_t)r < sizeof(uint32_t))
+ return -EIO;
+
+ if (data) {
+ if (net_byteorder)
+ *data = be32toh(*(uint32_t *) attr_data);
+ else
+ *data = *(uint32_t *) attr_data;
+ }
+
+ return 0;
+}
+
+int sd_netlink_message_read_ether_addr(sd_netlink_message *m, unsigned short type, struct ether_addr *data) {
+ int r;
+ void *attr_data;
+
+ assert_return(m, -EINVAL);
+
+ r = message_attribute_has_type(m, NULL, type, NETLINK_TYPE_ETHER_ADDR);
+ if (r < 0)
+ return r;
+
+ r = netlink_message_read_internal(m, type, &attr_data, NULL);
+ if (r < 0)
+ return r;
+ else if ((size_t)r < sizeof(struct ether_addr))
+ return -EIO;
+
+ if (data)
+ memcpy(data, attr_data, sizeof(struct ether_addr));
+
+ return 0;
+}
+
+int sd_netlink_message_read_cache_info(sd_netlink_message *m, unsigned short type, struct ifa_cacheinfo *info) {
+ int r;
+ void *attr_data;
+
+ assert_return(m, -EINVAL);
+
+ r = message_attribute_has_type(m, NULL, type, NETLINK_TYPE_CACHE_INFO);
+ if (r < 0)
+ return r;
+
+ r = netlink_message_read_internal(m, type, &attr_data, NULL);
+ if (r < 0)
+ return r;
+ else if ((size_t)r < sizeof(struct ifa_cacheinfo))
+ return -EIO;
+
+ if (info)
+ memcpy(info, attr_data, sizeof(struct ifa_cacheinfo));
+
+ return 0;
+}
+
+int sd_netlink_message_read_in_addr(sd_netlink_message *m, unsigned short type, struct in_addr *data) {
+ int r;
+ void *attr_data;
+
+ assert_return(m, -EINVAL);
+
+ r = message_attribute_has_type(m, NULL, type, NETLINK_TYPE_IN_ADDR);
+ if (r < 0)
+ return r;
+
+ r = netlink_message_read_internal(m, type, &attr_data, NULL);
+ if (r < 0)
+ return r;
+ else if ((size_t)r < sizeof(struct in_addr))
+ return -EIO;
+
+ if (data)
+ memcpy(data, attr_data, sizeof(struct in_addr));
+
+ return 0;
+}
+
+int sd_netlink_message_read_in6_addr(sd_netlink_message *m, unsigned short type, struct in6_addr *data) {
+ int r;
+ void *attr_data;
+
+ assert_return(m, -EINVAL);
+
+ r = message_attribute_has_type(m, NULL, type, NETLINK_TYPE_IN_ADDR);
+ if (r < 0)
+ return r;
+
+ r = netlink_message_read_internal(m, type, &attr_data, NULL);
+ if (r < 0)
+ return r;
+ else if ((size_t)r < sizeof(struct in6_addr))
+ return -EIO;
+
+ if (data)
+ memcpy(data, attr_data, sizeof(struct in6_addr));
+
+ return 0;
+}
+
+static int netlink_container_parse(sd_netlink_message *m,
+ struct netlink_container *container,
+ int count,
+ struct rtattr *rta,
+ unsigned int rt_len) {
+ _cleanup_free_ struct netlink_attribute *attributes = NULL;
+
+ attributes = new0(struct netlink_attribute, count);
+ if (!attributes)
+ return -ENOMEM;
+
+ for (; RTA_OK(rta, rt_len); rta = RTA_NEXT(rta, rt_len)) {
+ unsigned short type;
+
+ type = RTA_TYPE(rta);
+
+ /* if the kernel is newer than the headers we used
+ when building, we ignore out-of-range attributes */
+ if (type >= count)
+ continue;
+
+ if (attributes[type].offset)
+ log_debug("rtnl: message parse - overwriting repeated attribute");
+
+ attributes[type].offset = (uint8_t *) rta - (uint8_t *) m->hdr;
+ attributes[type].nested = RTA_FLAGS(rta) & NLA_F_NESTED;
+ attributes[type].net_byteorder = RTA_FLAGS(rta) & NLA_F_NET_BYTEORDER;
+ }
+
+ container->attributes = attributes;
+ attributes = NULL;
+ container->n_attributes = count;
+
+ return 0;
+}
+
+int sd_netlink_message_enter_container(sd_netlink_message *m, unsigned short type_id) {
+ const NLType *nl_type;
+ const NLTypeSystem *type_system;
+ void *container;
+ uint16_t type;
+ size_t size;
+ int r;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->n_containers < RTNL_CONTAINER_DEPTH, -EINVAL);
+
+ r = type_system_get_type(m->containers[m->n_containers].type_system,
+ &nl_type,
+ type_id);
+ if (r < 0)
+ return r;
+
+ type = type_get_type(nl_type);
+
+ if (type == NETLINK_TYPE_NESTED) {
+ r = type_system_get_type_system(m->containers[m->n_containers].type_system,
+ &type_system,
+ type_id);
+ if (r < 0)
+ return r;
+ } else if (type == NETLINK_TYPE_UNION) {
+ const NLTypeSystemUnion *type_system_union;
+
+ r = type_system_get_type_system_union(m->containers[m->n_containers].type_system,
+ &type_system_union,
+ type_id);
+ if (r < 0)
+ return r;
+
+ switch (type_system_union->match_type) {
+ case NL_MATCH_SIBLING:
+ {
+ const char *key;
+
+ r = sd_netlink_message_read_string(m, type_system_union->match, &key);
+ if (r < 0)
+ return r;
+
+ r = type_system_union_get_type_system(type_system_union,
+ &type_system,
+ key);
+ if (r < 0)
+ return r;
+
+ break;
+ }
+ case NL_MATCH_PROTOCOL:
+ {
+ int family;
+
+ r = sd_rtnl_message_get_family(m, &family);
+ if (r < 0)
+ return r;
+
+ r = type_system_union_protocol_get_type_system(type_system_union,
+ &type_system,
+ family);
+ if (r < 0)
+ return r;
+
+ break;
+ }
+ default:
+ assert_not_reached("sd-netlink: invalid type system union type");
+ }
+ } else
+ return -EINVAL;
+
+ r = netlink_message_read_internal(m, type_id, &container, NULL);
+ if (r < 0)
+ return r;
+ else
+ size = (size_t)r;
+
+ m->n_containers++;
+
+ r = netlink_container_parse(m,
+ &m->containers[m->n_containers],
+ type_system_get_count(type_system),
+ container,
+ size);
+ if (r < 0) {
+ m->n_containers--;
+ return r;
+ }
+
+ m->containers[m->n_containers].type_system = type_system;
+
+ return 0;
+}
+
+int sd_netlink_message_exit_container(sd_netlink_message *m) {
+ assert_return(m, -EINVAL);
+ assert_return(m->sealed, -EINVAL);
+ assert_return(m->n_containers > 0, -EINVAL);
+
+ m->containers[m->n_containers].attributes = mfree(m->containers[m->n_containers].attributes);
+ m->containers[m->n_containers].type_system = NULL;
+
+ m->n_containers--;
+
+ return 0;
+}
+
+uint32_t rtnl_message_get_serial(sd_netlink_message *m) {
+ assert(m);
+ assert(m->hdr);
+
+ return m->hdr->nlmsg_seq;
+}
+
+int sd_netlink_message_is_error(sd_netlink_message *m) {
+ assert_return(m, 0);
+ assert_return(m->hdr, 0);
+
+ return m->hdr->nlmsg_type == NLMSG_ERROR;
+}
+
+int sd_netlink_message_get_errno(sd_netlink_message *m) {
+ struct nlmsgerr *err;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+
+ if (!sd_netlink_message_is_error(m))
+ return 0;
+
+ err = NLMSG_DATA(m->hdr);
+
+ return err->error;
+}
+
+int sd_netlink_message_rewind(sd_netlink_message *m) {
+ const NLType *nl_type;
+ uint16_t type;
+ size_t size;
+ unsigned i;
+ int r;
+
+ assert_return(m, -EINVAL);
+
+ /* don't allow appending to message once parsed */
+ if (!m->sealed)
+ rtnl_message_seal(m);
+
+ for (i = 1; i <= m->n_containers; i++)
+ m->containers[i].attributes = mfree(m->containers[i].attributes);
+
+ m->n_containers = 0;
+
+ if (m->containers[0].attributes)
+ /* top-level attributes have already been parsed */
+ return 0;
+
+ assert(m->hdr);
+
+ r = type_system_get_type(&type_system_root, &nl_type, m->hdr->nlmsg_type);
+ if (r < 0)
+ return r;
+
+ type = type_get_type(nl_type);
+ size = type_get_size(nl_type);
+
+ if (type == NETLINK_TYPE_NESTED) {
+ const NLTypeSystem *type_system;
+
+ type_get_type_system(nl_type, &type_system);
+
+ m->containers[0].type_system = type_system;
+
+ r = netlink_container_parse(m,
+ &m->containers[m->n_containers],
+ type_system_get_count(type_system),
+ (struct rtattr*)((uint8_t*)NLMSG_DATA(m->hdr) + NLMSG_ALIGN(size)),
+ NLMSG_PAYLOAD(m->hdr, size));
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
+void rtnl_message_seal(sd_netlink_message *m) {
+ assert(m);
+ assert(!m->sealed);
+
+ m->sealed = true;
+}
+
+sd_netlink_message *sd_netlink_message_next(sd_netlink_message *m) {
+ assert_return(m, NULL);
+
+ return m->next;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-netlink/netlink-socket.c b/src/libsystemd/libsystemd-internal/sd-netlink/netlink-socket.c
new file mode 100644
index 0000000000..d28a413c65
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-netlink/netlink-socket.c
@@ -0,0 +1,474 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Tom Gundersen <teg@jklm.no>
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <netinet/in.h>
+#include <stdbool.h>
+#include <unistd.h>
+
+#include <systemd/sd-netlink.h>
+
+#include "alloc-util.h"
+#include "formats-util.h"
+#include "missing.h"
+#include "netlink-internal.h"
+#include "netlink-types.h"
+#include "netlink-util.h"
+#include "refcnt.h"
+#include "socket-util.h"
+#include "util.h"
+
+int socket_open(int family) {
+ int fd;
+
+ fd = socket(PF_NETLINK, SOCK_RAW|SOCK_CLOEXEC|SOCK_NONBLOCK, family);
+ if (fd < 0)
+ return -errno;
+
+ return fd;
+}
+
+static int broadcast_groups_get(sd_netlink *nl) {
+ _cleanup_free_ uint32_t *groups = NULL;
+ socklen_t len = 0, old_len;
+ unsigned i, j;
+ int r;
+
+ assert(nl);
+ assert(nl->fd >= 0);
+
+ r = getsockopt(nl->fd, SOL_NETLINK, NETLINK_LIST_MEMBERSHIPS, NULL, &len);
+ if (r < 0) {
+ if (errno == ENOPROTOOPT) {
+ nl->broadcast_group_dont_leave = true;
+ return 0;
+ } else
+ return -errno;
+ }
+
+ if (len == 0)
+ return 0;
+
+ groups = new0(uint32_t, len);
+ if (!groups)
+ return -ENOMEM;
+
+ old_len = len;
+
+ r = getsockopt(nl->fd, SOL_NETLINK, NETLINK_LIST_MEMBERSHIPS, groups, &len);
+ if (r < 0)
+ return -errno;
+
+ if (old_len != len)
+ return -EIO;
+
+ r = hashmap_ensure_allocated(&nl->broadcast_group_refs, NULL);
+ if (r < 0)
+ return r;
+
+ for (i = 0; i < len; i++) {
+ for (j = 0; j < sizeof(uint32_t) * 8; j++) {
+ uint32_t offset;
+ unsigned group;
+
+ offset = 1U << j;
+
+ if (!(groups[i] & offset))
+ continue;
+
+ group = i * sizeof(uint32_t) * 8 + j + 1;
+
+ r = hashmap_put(nl->broadcast_group_refs, UINT_TO_PTR(group), UINT_TO_PTR(1));
+ if (r < 0)
+ return r;
+ }
+ }
+
+ return 0;
+}
+
+int socket_bind(sd_netlink *nl) {
+ socklen_t addrlen;
+ int r, one = 1;
+
+ r = setsockopt(nl->fd, SOL_NETLINK, NETLINK_PKTINFO, &one, sizeof(one));
+ if (r < 0)
+ return -errno;
+
+ addrlen = sizeof(nl->sockaddr);
+
+ r = bind(nl->fd, &nl->sockaddr.sa, addrlen);
+ /* ignore EINVAL to allow opening an already bound socket */
+ if (r < 0 && errno != EINVAL)
+ return -errno;
+
+ r = getsockname(nl->fd, &nl->sockaddr.sa, &addrlen);
+ if (r < 0)
+ return -errno;
+
+ r = broadcast_groups_get(nl);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+static unsigned broadcast_group_get_ref(sd_netlink *nl, unsigned group) {
+ assert(nl);
+
+ return PTR_TO_UINT(hashmap_get(nl->broadcast_group_refs, UINT_TO_PTR(group)));
+}
+
+static int broadcast_group_set_ref(sd_netlink *nl, unsigned group, unsigned n_ref) {
+ int r;
+
+ assert(nl);
+
+ r = hashmap_replace(nl->broadcast_group_refs, UINT_TO_PTR(group), UINT_TO_PTR(n_ref));
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+static int broadcast_group_join(sd_netlink *nl, unsigned group) {
+ int r;
+
+ assert(nl);
+ assert(nl->fd >= 0);
+ assert(group > 0);
+
+ r = setsockopt(nl->fd, SOL_NETLINK, NETLINK_ADD_MEMBERSHIP, &group, sizeof(group));
+ if (r < 0)
+ return -errno;
+
+ return 0;
+}
+
+int socket_broadcast_group_ref(sd_netlink *nl, unsigned group) {
+ unsigned n_ref;
+ int r;
+
+ assert(nl);
+
+ n_ref = broadcast_group_get_ref(nl, group);
+
+ n_ref++;
+
+ r = hashmap_ensure_allocated(&nl->broadcast_group_refs, NULL);
+ if (r < 0)
+ return r;
+
+ r = broadcast_group_set_ref(nl, group, n_ref);
+ if (r < 0)
+ return r;
+
+ if (n_ref > 1)
+ /* not yet in the group */
+ return 0;
+
+ r = broadcast_group_join(nl, group);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+static int broadcast_group_leave(sd_netlink *nl, unsigned group) {
+ int r;
+
+ assert(nl);
+ assert(nl->fd >= 0);
+ assert(group > 0);
+
+ if (nl->broadcast_group_dont_leave)
+ return 0;
+
+ r = setsockopt(nl->fd, SOL_NETLINK, NETLINK_DROP_MEMBERSHIP, &group, sizeof(group));
+ if (r < 0)
+ return -errno;
+
+ return 0;
+}
+
+int socket_broadcast_group_unref(sd_netlink *nl, unsigned group) {
+ unsigned n_ref;
+ int r;
+
+ assert(nl);
+
+ n_ref = broadcast_group_get_ref(nl, group);
+
+ assert(n_ref > 0);
+
+ n_ref--;
+
+ r = broadcast_group_set_ref(nl, group, n_ref);
+ if (r < 0)
+ return r;
+
+ if (n_ref > 0)
+ /* still refs left */
+ return 0;
+
+ r = broadcast_group_leave(nl, group);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+/* returns the number of bytes sent, or a negative error code */
+int socket_write_message(sd_netlink *nl, sd_netlink_message *m) {
+ union {
+ struct sockaddr sa;
+ struct sockaddr_nl nl;
+ } addr = {
+ .nl.nl_family = AF_NETLINK,
+ };
+ ssize_t k;
+
+ assert(nl);
+ assert(m);
+ assert(m->hdr);
+
+ k = sendto(nl->fd, m->hdr, m->hdr->nlmsg_len,
+ 0, &addr.sa, sizeof(addr));
+ if (k < 0)
+ return -errno;
+
+ return k;
+}
+
+static int socket_recv_message(int fd, struct iovec *iov, uint32_t *_group, bool peek) {
+ union sockaddr_union sender;
+ uint8_t cmsg_buffer[CMSG_SPACE(sizeof(struct nl_pktinfo))];
+ struct msghdr msg = {
+ .msg_iov = iov,
+ .msg_iovlen = 1,
+ .msg_name = &sender,
+ .msg_namelen = sizeof(sender),
+ .msg_control = cmsg_buffer,
+ .msg_controllen = sizeof(cmsg_buffer),
+ };
+ struct cmsghdr *cmsg;
+ uint32_t group = 0;
+ int r;
+
+ assert(fd >= 0);
+ assert(iov);
+
+ r = recvmsg(fd, &msg, MSG_TRUNC | (peek ? MSG_PEEK : 0));
+ if (r < 0) {
+ /* no data */
+ if (errno == ENOBUFS)
+ log_debug("rtnl: kernel receive buffer overrun");
+ else if (errno == EAGAIN)
+ log_debug("rtnl: no data in socket");
+
+ return (errno == EAGAIN || errno == EINTR) ? 0 : -errno;
+ }
+
+ if (sender.nl.nl_pid != 0) {
+ /* not from the kernel, ignore */
+ log_debug("rtnl: ignoring message from portid %"PRIu32, sender.nl.nl_pid);
+
+ if (peek) {
+ /* drop the message */
+ r = recvmsg(fd, &msg, 0);
+ if (r < 0)
+ return (errno == EAGAIN || errno == EINTR) ? 0 : -errno;
+ }
+
+ return 0;
+ }
+
+ CMSG_FOREACH(cmsg, &msg) {
+ if (cmsg->cmsg_level == SOL_NETLINK &&
+ cmsg->cmsg_type == NETLINK_PKTINFO &&
+ cmsg->cmsg_len == CMSG_LEN(sizeof(struct nl_pktinfo))) {
+ struct nl_pktinfo *pktinfo = (void *)CMSG_DATA(cmsg);
+
+ /* multi-cast group */
+ group = pktinfo->group;
+ }
+ }
+
+ if (_group)
+ *_group = group;
+
+ return r;
+}
+
+/* On success, the number of bytes received is returned and *ret points to the received message
+ * which has a valid header and the correct size.
+ * If nothing useful was received 0 is returned.
+ * On failure, a negative error code is returned.
+ */
+int socket_read_message(sd_netlink *rtnl) {
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *first = NULL;
+ struct iovec iov = {};
+ uint32_t group = 0;
+ bool multi_part = false, done = false;
+ struct nlmsghdr *new_msg;
+ size_t len;
+ int r;
+ unsigned i = 0;
+
+ assert(rtnl);
+ assert(rtnl->rbuffer);
+ assert(rtnl->rbuffer_allocated >= sizeof(struct nlmsghdr));
+
+ /* read nothing, just get the pending message size */
+ r = socket_recv_message(rtnl->fd, &iov, NULL, true);
+ if (r <= 0)
+ return r;
+ else
+ len = (size_t)r;
+
+ /* make room for the pending message */
+ if (!greedy_realloc((void **)&rtnl->rbuffer,
+ &rtnl->rbuffer_allocated,
+ len, sizeof(uint8_t)))
+ return -ENOMEM;
+
+ iov.iov_base = rtnl->rbuffer;
+ iov.iov_len = rtnl->rbuffer_allocated;
+
+ /* read the pending message */
+ r = socket_recv_message(rtnl->fd, &iov, &group, false);
+ if (r <= 0)
+ return r;
+ else
+ len = (size_t)r;
+
+ if (len > rtnl->rbuffer_allocated)
+ /* message did not fit in read buffer */
+ return -EIO;
+
+ if (NLMSG_OK(rtnl->rbuffer, len) && rtnl->rbuffer->nlmsg_flags & NLM_F_MULTI) {
+ multi_part = true;
+
+ for (i = 0; i < rtnl->rqueue_partial_size; i++) {
+ if (rtnl_message_get_serial(rtnl->rqueue_partial[i]) ==
+ rtnl->rbuffer->nlmsg_seq) {
+ first = rtnl->rqueue_partial[i];
+ break;
+ }
+ }
+ }
+
+ for (new_msg = rtnl->rbuffer; NLMSG_OK(new_msg, len) && !done; new_msg = NLMSG_NEXT(new_msg, len)) {
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
+ const NLType *nl_type;
+
+ if (!group && new_msg->nlmsg_pid != rtnl->sockaddr.nl.nl_pid)
+ /* not broadcast and not for us */
+ continue;
+
+ if (new_msg->nlmsg_type == NLMSG_NOOP)
+ /* silently drop noop messages */
+ continue;
+
+ if (new_msg->nlmsg_type == NLMSG_DONE) {
+ /* finished reading multi-part message */
+ done = true;
+
+ /* if first is not defined, put NLMSG_DONE into the receive queue. */
+ if (first)
+ continue;
+ }
+
+ /* check that we support this message type */
+ r = type_system_get_type(&type_system_root, &nl_type, new_msg->nlmsg_type);
+ if (r < 0) {
+ if (r == -EOPNOTSUPP)
+ log_debug("sd-netlink: ignored message with unknown type: %i",
+ new_msg->nlmsg_type);
+
+ continue;
+ }
+
+ /* check that the size matches the message type */
+ if (new_msg->nlmsg_len < NLMSG_LENGTH(type_get_size(nl_type))) {
+ log_debug("sd-netlink: message larger than expected, dropping");
+ continue;
+ }
+
+ r = message_new_empty(rtnl, &m);
+ if (r < 0)
+ return r;
+
+ m->broadcast = !!group;
+
+ m->hdr = memdup(new_msg, new_msg->nlmsg_len);
+ if (!m->hdr)
+ return -ENOMEM;
+
+ /* seal and parse the top-level message */
+ r = sd_netlink_message_rewind(m);
+ if (r < 0)
+ return r;
+
+ /* push the message onto the multi-part message stack */
+ if (first)
+ m->next = first;
+ first = m;
+ m = NULL;
+ }
+
+ if (len)
+ log_debug("sd-netlink: discarding %zu bytes of incoming message", len);
+
+ if (!first)
+ return 0;
+
+ if (!multi_part || done) {
+ /* we got a complete message, push it on the read queue */
+ r = rtnl_rqueue_make_room(rtnl);
+ if (r < 0)
+ return r;
+
+ rtnl->rqueue[rtnl->rqueue_size++] = first;
+ first = NULL;
+
+ if (multi_part && (i < rtnl->rqueue_partial_size)) {
+ /* remove the message form the partial read queue */
+ memmove(rtnl->rqueue_partial + i,rtnl->rqueue_partial + i + 1,
+ sizeof(sd_netlink_message*) * (rtnl->rqueue_partial_size - i - 1));
+ rtnl->rqueue_partial_size--;
+ }
+
+ return 1;
+ } else {
+ /* we only got a partial multi-part message, push it on the
+ partial read queue */
+ if (i < rtnl->rqueue_partial_size) {
+ rtnl->rqueue_partial[i] = first;
+ } else {
+ r = rtnl_rqueue_partial_make_room(rtnl);
+ if (r < 0)
+ return r;
+
+ rtnl->rqueue_partial[rtnl->rqueue_partial_size++] = first;
+ }
+ first = NULL;
+
+ return 0;
+ }
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-netlink/netlink-types.c b/src/libsystemd/libsystemd-internal/sd-netlink/netlink-types.c
new file mode 100644
index 0000000000..3a4bac2ced
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-netlink/netlink-types.c
@@ -0,0 +1,684 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2014 Tom Gundersen <teg@jklm.no>
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <stdint.h>
+#include <sys/socket.h>
+#include <linux/netlink.h>
+#include <linux/rtnetlink.h>
+#include <linux/in6.h>
+#include <linux/veth.h>
+#include <linux/if_bridge.h>
+#include <linux/if_addr.h>
+#include <linux/if.h>
+#include <linux/ip.h>
+#include <linux/if_link.h>
+#include <linux/if_tunnel.h>
+
+#include "macro.h"
+#include "missing.h"
+#include "netlink-types.h"
+#include "string-table.h"
+#include "util.h"
+
+/* Maximum ARP IP target defined in kernel */
+#define BOND_MAX_ARP_TARGETS 16
+
+typedef enum {
+ BOND_ARP_TARGETS_0,
+ BOND_ARP_TARGETS_1,
+ BOND_ARP_TARGETS_2,
+ BOND_ARP_TARGETS_3,
+ BOND_ARP_TARGETS_4,
+ BOND_ARP_TARGETS_5,
+ BOND_ARP_TARGETS_6,
+ BOND_ARP_TARGETS_7,
+ BOND_ARP_TARGETS_8,
+ BOND_ARP_TARGETS_9,
+ BOND_ARP_TARGETS_10,
+ BOND_ARP_TARGETS_11,
+ BOND_ARP_TARGETS_12,
+ BOND_ARP_TARGETS_13,
+ BOND_ARP_TARGETS_14,
+ BOND_ARP_TARGETS_MAX = BOND_MAX_ARP_TARGETS,
+} BondArpTargets;
+
+struct NLType {
+ uint16_t type;
+ size_t size;
+ const NLTypeSystem *type_system;
+ const NLTypeSystemUnion *type_system_union;
+};
+
+struct NLTypeSystem {
+ uint16_t count;
+ const NLType *types;
+};
+
+static const NLTypeSystem rtnl_link_type_system;
+
+static const NLType empty_types[1] = {
+ /* fake array to avoid .types==NULL, which denotes invalid type-systems */
+};
+
+static const NLTypeSystem empty_type_system = {
+ .count = 0,
+ .types = empty_types,
+};
+
+static const NLType rtnl_link_info_data_veth_types[] = {
+ [VETH_INFO_PEER] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
+};
+
+static const NLType rtnl_link_info_data_ipvlan_types[] = {
+ [IFLA_IPVLAN_MODE] = { .type = NETLINK_TYPE_U16 },
+};
+
+static const NLType rtnl_link_info_data_macvlan_types[] = {
+ [IFLA_MACVLAN_MODE] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_MACVLAN_FLAGS] = { .type = NETLINK_TYPE_U16 },
+};
+
+static const NLType rtnl_link_info_data_bridge_types[] = {
+ [IFLA_BR_FORWARD_DELAY] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_BR_HELLO_TIME] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_BR_MAX_AGE] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_BR_AGEING_TIME] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_BR_STP_STATE] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_BR_PRIORITY] = { .type = NETLINK_TYPE_U16 },
+ [IFLA_BR_VLAN_FILTERING] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_BR_VLAN_PROTOCOL] = { .type = NETLINK_TYPE_U16 },
+ [IFLA_BR_GROUP_FWD_MASK] = { .type = NETLINK_TYPE_U16 },
+ [IFLA_BR_ROOT_PORT] = { .type = NETLINK_TYPE_U16 },
+ [IFLA_BR_ROOT_PATH_COST] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_BR_TOPOLOGY_CHANGE] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_BR_TOPOLOGY_CHANGE_DETECTED] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_BR_HELLO_TIMER] = { .type = NETLINK_TYPE_U16 },
+ [IFLA_BR_TCN_TIMER] = { .type = NETLINK_TYPE_U16 },
+ [IFLA_BR_TOPOLOGY_CHANGE_TIMER] = { .type = NETLINK_TYPE_U16 },
+ [IFLA_BR_GC_TIMER] = { .type = NETLINK_TYPE_U64 },
+ [IFLA_BR_GROUP_ADDR] = { .type = NETLINK_TYPE_U16 },
+ [IFLA_BR_FDB_FLUSH] = { .type = NETLINK_TYPE_U16 },
+ [IFLA_BR_MCAST_ROUTER] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_BR_MCAST_SNOOPING] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_BR_MCAST_QUERIER] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_BR_MCAST_HASH_ELASTICITY] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_BR_MCAST_HASH_MAX] = { .type = NETLINK_TYPE_U16 },
+ [IFLA_BR_MCAST_LAST_MEMBER_CNT] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_BR_MCAST_STARTUP_QUERY_CNT] = { .type = NETLINK_TYPE_U16 },
+ [IFLA_BR_MCAST_LAST_MEMBER_INTVL] = { .type = NETLINK_TYPE_U64 },
+ [IFLA_BR_MCAST_MEMBERSHIP_INTVL] = { .type = NETLINK_TYPE_U64 },
+ [IFLA_BR_MCAST_QUERIER_INTVL] = { .type = NETLINK_TYPE_U64 },
+ [IFLA_BR_MCAST_QUERY_INTVL] = { .type = NETLINK_TYPE_U64 },
+ [IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NETLINK_TYPE_U64 },
+ [IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = { .type = NETLINK_TYPE_U64 },
+ [IFLA_BR_NF_CALL_IPTABLES] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_BR_NF_CALL_IP6TABLES] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_BR_NF_CALL_ARPTABLES] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_BR_VLAN_DEFAULT_PVID] = { .type = NETLINK_TYPE_U16 },
+};
+
+static const NLType rtnl_link_info_data_vlan_types[] = {
+ [IFLA_VLAN_ID] = { .type = NETLINK_TYPE_U16 },
+/*
+ [IFLA_VLAN_FLAGS] = { .len = sizeof(struct ifla_vlan_flags) },
+ [IFLA_VLAN_EGRESS_QOS] = { .type = NETLINK_TYPE_NESTED },
+ [IFLA_VLAN_INGRESS_QOS] = { .type = NETLINK_TYPE_NESTED },
+*/
+ [IFLA_VLAN_PROTOCOL] = { .type = NETLINK_TYPE_U16 },
+};
+
+static const NLType rtnl_link_info_data_vxlan_types[] = {
+ [IFLA_VXLAN_ID] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_VXLAN_GROUP] = { .type = NETLINK_TYPE_IN_ADDR },
+ [IFLA_VXLAN_LINK] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_VXLAN_LOCAL] = { .type = NETLINK_TYPE_U32},
+ [IFLA_VXLAN_TTL] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_VXLAN_TOS] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_VXLAN_LEARNING] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_VXLAN_AGEING] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_VXLAN_LIMIT] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_VXLAN_PORT_RANGE] = { .type = NETLINK_TYPE_U32},
+ [IFLA_VXLAN_PROXY] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_VXLAN_RSC] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_VXLAN_L2MISS] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_VXLAN_L3MISS] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_VXLAN_PORT] = { .type = NETLINK_TYPE_U16 },
+ [IFLA_VXLAN_GROUP6] = { .type = NETLINK_TYPE_IN_ADDR },
+ [IFLA_VXLAN_LOCAL6] = { .type = NETLINK_TYPE_IN_ADDR },
+ [IFLA_VXLAN_UDP_CSUM] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_VXLAN_UDP_ZERO_CSUM6_TX] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_VXLAN_UDP_ZERO_CSUM6_RX] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_VXLAN_REMCSUM_TX] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_VXLAN_REMCSUM_RX] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_VXLAN_GBP] = { .type = NETLINK_TYPE_FLAG },
+ [IFLA_VXLAN_REMCSUM_NOPARTIAL] = { .type = NETLINK_TYPE_FLAG },
+};
+
+static const NLType rtnl_bond_arp_target_types[] = {
+ [BOND_ARP_TARGETS_0] = { .type = NETLINK_TYPE_U32 },
+ [BOND_ARP_TARGETS_1] = { .type = NETLINK_TYPE_U32 },
+ [BOND_ARP_TARGETS_2] = { .type = NETLINK_TYPE_U32 },
+ [BOND_ARP_TARGETS_3] = { .type = NETLINK_TYPE_U32 },
+ [BOND_ARP_TARGETS_4] = { .type = NETLINK_TYPE_U32 },
+ [BOND_ARP_TARGETS_5] = { .type = NETLINK_TYPE_U32 },
+ [BOND_ARP_TARGETS_6] = { .type = NETLINK_TYPE_U32 },
+ [BOND_ARP_TARGETS_7] = { .type = NETLINK_TYPE_U32 },
+ [BOND_ARP_TARGETS_8] = { .type = NETLINK_TYPE_U32 },
+ [BOND_ARP_TARGETS_9] = { .type = NETLINK_TYPE_U32 },
+ [BOND_ARP_TARGETS_10] = { .type = NETLINK_TYPE_U32 },
+ [BOND_ARP_TARGETS_11] = { .type = NETLINK_TYPE_U32 },
+ [BOND_ARP_TARGETS_12] = { .type = NETLINK_TYPE_U32 },
+ [BOND_ARP_TARGETS_13] = { .type = NETLINK_TYPE_U32 },
+ [BOND_ARP_TARGETS_14] = { .type = NETLINK_TYPE_U32 },
+ [BOND_ARP_TARGETS_MAX] = { .type = NETLINK_TYPE_U32 },
+};
+
+static const NLTypeSystem rtnl_bond_arp_type_system = {
+ .count = ELEMENTSOF(rtnl_bond_arp_target_types),
+ .types = rtnl_bond_arp_target_types,
+};
+
+static const NLType rtnl_link_info_data_bond_types[] = {
+ [IFLA_BOND_MODE] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_BOND_ACTIVE_SLAVE] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_BOND_MIIMON] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_BOND_UPDELAY] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_BOND_DOWNDELAY] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_BOND_USE_CARRIER] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_BOND_ARP_INTERVAL] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_BOND_ARP_IP_TARGET] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_bond_arp_type_system },
+ [IFLA_BOND_ARP_VALIDATE] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_BOND_ARP_ALL_TARGETS] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_BOND_PRIMARY] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_BOND_PRIMARY_RESELECT] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_BOND_FAIL_OVER_MAC] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_BOND_XMIT_HASH_POLICY] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_BOND_RESEND_IGMP] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_BOND_NUM_PEER_NOTIF] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_BOND_ALL_SLAVES_ACTIVE] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_BOND_MIN_LINKS] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_BOND_LP_INTERVAL] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_BOND_PACKETS_PER_SLAVE] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_BOND_AD_LACP_RATE] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_BOND_AD_SELECT] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_BOND_AD_INFO] = { .type = NETLINK_TYPE_NESTED },
+};
+
+static const NLType rtnl_link_info_data_iptun_types[] = {
+ [IFLA_IPTUN_LINK] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_IPTUN_LOCAL] = { .type = NETLINK_TYPE_IN_ADDR },
+ [IFLA_IPTUN_REMOTE] = { .type = NETLINK_TYPE_IN_ADDR },
+ [IFLA_IPTUN_TTL] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_IPTUN_TOS] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_IPTUN_PMTUDISC] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_IPTUN_FLAGS] = { .type = NETLINK_TYPE_U16 },
+ [IFLA_IPTUN_PROTO] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_IPTUN_6RD_PREFIX] = { .type = NETLINK_TYPE_IN_ADDR },
+ [IFLA_IPTUN_6RD_RELAY_PREFIX] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_IPTUN_6RD_PREFIXLEN] = { .type = NETLINK_TYPE_U16 },
+ [IFLA_IPTUN_6RD_RELAY_PREFIXLEN] = { .type = NETLINK_TYPE_U16 },
+ [IFLA_IPTUN_ENCAP_TYPE] = { .type = NETLINK_TYPE_U16 },
+ [IFLA_IPTUN_ENCAP_FLAGS] = { .type = NETLINK_TYPE_U16 },
+ [IFLA_IPTUN_ENCAP_SPORT] = { .type = NETLINK_TYPE_U16 },
+ [IFLA_IPTUN_ENCAP_DPORT] = { .type = NETLINK_TYPE_U16 },
+};
+
+static const NLType rtnl_link_info_data_ipgre_types[] = {
+ [IFLA_GRE_LINK] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_GRE_IFLAGS] = { .type = NETLINK_TYPE_U16 },
+ [IFLA_GRE_OFLAGS] = { .type = NETLINK_TYPE_U16 },
+ [IFLA_GRE_IKEY] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_GRE_OKEY] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_GRE_LOCAL] = { .type = NETLINK_TYPE_IN_ADDR },
+ [IFLA_GRE_REMOTE] = { .type = NETLINK_TYPE_IN_ADDR },
+ [IFLA_GRE_TTL] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_GRE_TOS] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_GRE_PMTUDISC] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_GRE_FLOWINFO] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_GRE_FLAGS] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_GRE_ENCAP_TYPE] = { .type = NETLINK_TYPE_U16 },
+ [IFLA_GRE_ENCAP_FLAGS] = { .type = NETLINK_TYPE_U16 },
+ [IFLA_GRE_ENCAP_SPORT] = { .type = NETLINK_TYPE_U16 },
+ [IFLA_GRE_ENCAP_DPORT] = { .type = NETLINK_TYPE_U16 },
+};
+
+static const NLType rtnl_link_info_data_ipvti_types[] = {
+ [IFLA_VTI_LINK] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_VTI_IKEY] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_VTI_OKEY] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_VTI_LOCAL] = { .type = NETLINK_TYPE_IN_ADDR },
+ [IFLA_VTI_REMOTE] = { .type = NETLINK_TYPE_IN_ADDR },
+};
+
+static const NLType rtnl_link_info_data_ip6tnl_types[] = {
+ [IFLA_IPTUN_LINK] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_IPTUN_LOCAL] = { .type = NETLINK_TYPE_IN_ADDR },
+ [IFLA_IPTUN_REMOTE] = { .type = NETLINK_TYPE_IN_ADDR },
+ [IFLA_IPTUN_TTL] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_IPTUN_FLAGS] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_IPTUN_PROTO] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_IPTUN_ENCAP_LIMIT] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_IPTUN_FLOWINFO] = { .type = NETLINK_TYPE_U32 },
+};
+
+/* these strings must match the .kind entries in the kernel */
+static const char* const nl_union_link_info_data_table[] = {
+ [NL_UNION_LINK_INFO_DATA_BOND] = "bond",
+ [NL_UNION_LINK_INFO_DATA_BRIDGE] = "bridge",
+ [NL_UNION_LINK_INFO_DATA_VLAN] = "vlan",
+ [NL_UNION_LINK_INFO_DATA_VETH] = "veth",
+ [NL_UNION_LINK_INFO_DATA_DUMMY] = "dummy",
+ [NL_UNION_LINK_INFO_DATA_MACVLAN] = "macvlan",
+ [NL_UNION_LINK_INFO_DATA_MACVTAP] = "macvtap",
+ [NL_UNION_LINK_INFO_DATA_IPVLAN] = "ipvlan",
+ [NL_UNION_LINK_INFO_DATA_VXLAN] = "vxlan",
+ [NL_UNION_LINK_INFO_DATA_IPIP_TUNNEL] = "ipip",
+ [NL_UNION_LINK_INFO_DATA_IPGRE_TUNNEL] = "gre",
+ [NL_UNION_LINK_INFO_DATA_IPGRETAP_TUNNEL] = "gretap",
+ [NL_UNION_LINK_INFO_DATA_IP6GRE_TUNNEL] = "ip6gre",
+ [NL_UNION_LINK_INFO_DATA_IP6GRETAP_TUNNEL] = "ip6gretap",
+ [NL_UNION_LINK_INFO_DATA_SIT_TUNNEL] = "sit",
+ [NL_UNION_LINK_INFO_DATA_VTI_TUNNEL] = "vti",
+ [NL_UNION_LINK_INFO_DATA_VTI6_TUNNEL] = "vti6",
+ [NL_UNION_LINK_INFO_DATA_IP6TNL_TUNNEL] = "ip6tnl",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(nl_union_link_info_data, NLUnionLinkInfoData);
+
+static const NLTypeSystem rtnl_link_info_data_type_systems[] = {
+ [NL_UNION_LINK_INFO_DATA_BOND] = { .count = ELEMENTSOF(rtnl_link_info_data_bond_types),
+ .types = rtnl_link_info_data_bond_types },
+ [NL_UNION_LINK_INFO_DATA_BRIDGE] = { .count = ELEMENTSOF(rtnl_link_info_data_bridge_types),
+ .types = rtnl_link_info_data_bridge_types },
+ [NL_UNION_LINK_INFO_DATA_VLAN] = { .count = ELEMENTSOF(rtnl_link_info_data_vlan_types),
+ .types = rtnl_link_info_data_vlan_types },
+ [NL_UNION_LINK_INFO_DATA_VETH] = { .count = ELEMENTSOF(rtnl_link_info_data_veth_types),
+ .types = rtnl_link_info_data_veth_types },
+ [NL_UNION_LINK_INFO_DATA_MACVLAN] = { .count = ELEMENTSOF(rtnl_link_info_data_macvlan_types),
+ .types = rtnl_link_info_data_macvlan_types },
+ [NL_UNION_LINK_INFO_DATA_MACVTAP] = { .count = ELEMENTSOF(rtnl_link_info_data_macvlan_types),
+ .types = rtnl_link_info_data_macvlan_types },
+ [NL_UNION_LINK_INFO_DATA_IPVLAN] = { .count = ELEMENTSOF(rtnl_link_info_data_ipvlan_types),
+ .types = rtnl_link_info_data_ipvlan_types },
+ [NL_UNION_LINK_INFO_DATA_VXLAN] = { .count = ELEMENTSOF(rtnl_link_info_data_vxlan_types),
+ .types = rtnl_link_info_data_vxlan_types },
+ [NL_UNION_LINK_INFO_DATA_IPIP_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_iptun_types),
+ .types = rtnl_link_info_data_iptun_types },
+ [NL_UNION_LINK_INFO_DATA_IPGRE_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ipgre_types),
+ .types = rtnl_link_info_data_ipgre_types },
+ [NL_UNION_LINK_INFO_DATA_IPGRETAP_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ipgre_types),
+ .types = rtnl_link_info_data_ipgre_types },
+ [NL_UNION_LINK_INFO_DATA_IP6GRE_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ipgre_types),
+ .types = rtnl_link_info_data_ipgre_types },
+ [NL_UNION_LINK_INFO_DATA_IP6GRETAP_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ipgre_types),
+ .types = rtnl_link_info_data_ipgre_types },
+ [NL_UNION_LINK_INFO_DATA_SIT_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_iptun_types),
+ .types = rtnl_link_info_data_iptun_types },
+ [NL_UNION_LINK_INFO_DATA_VTI_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ipvti_types),
+ .types = rtnl_link_info_data_ipvti_types },
+ [NL_UNION_LINK_INFO_DATA_VTI6_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ipvti_types),
+ .types = rtnl_link_info_data_ipvti_types },
+ [NL_UNION_LINK_INFO_DATA_IP6TNL_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ip6tnl_types),
+ .types = rtnl_link_info_data_ip6tnl_types },
+
+};
+
+static const NLTypeSystemUnion rtnl_link_info_data_type_system_union = {
+ .num = _NL_UNION_LINK_INFO_DATA_MAX,
+ .lookup = nl_union_link_info_data_from_string,
+ .type_systems = rtnl_link_info_data_type_systems,
+ .match_type = NL_MATCH_SIBLING,
+ .match = IFLA_INFO_KIND,
+};
+
+static const NLType rtnl_link_info_types[] = {
+ [IFLA_INFO_KIND] = { .type = NETLINK_TYPE_STRING },
+ [IFLA_INFO_DATA] = { .type = NETLINK_TYPE_UNION, .type_system_union = &rtnl_link_info_data_type_system_union},
+/*
+ [IFLA_INFO_XSTATS],
+ [IFLA_INFO_SLAVE_KIND] = { .type = NETLINK_TYPE_STRING },
+ [IFLA_INFO_SLAVE_DATA] = { .type = NETLINK_TYPE_NESTED },
+*/
+};
+
+static const NLTypeSystem rtnl_link_info_type_system = {
+ .count = ELEMENTSOF(rtnl_link_info_types),
+ .types = rtnl_link_info_types,
+};
+
+static const struct NLType rtnl_prot_info_bridge_port_types[] = {
+ [IFLA_BRPORT_STATE] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_BRPORT_COST] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_BRPORT_PRIORITY] = { .type = NETLINK_TYPE_U16 },
+ [IFLA_BRPORT_MODE] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_BRPORT_GUARD] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_BRPORT_PROTECT] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_BRPORT_FAST_LEAVE] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_BRPORT_LEARNING] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_BRPORT_PROXYARP] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_BRPORT_LEARNING_SYNC] = { .type = NETLINK_TYPE_U8 },
+};
+
+static const NLTypeSystem rtnl_prot_info_type_systems[] = {
+ [AF_BRIDGE] = { .count = ELEMENTSOF(rtnl_prot_info_bridge_port_types),
+ .types = rtnl_prot_info_bridge_port_types },
+};
+
+static const NLTypeSystemUnion rtnl_prot_info_type_system_union = {
+ .num = AF_MAX,
+ .type_systems = rtnl_prot_info_type_systems,
+ .match_type = NL_MATCH_PROTOCOL,
+};
+
+static const struct NLType rtnl_af_spec_inet6_types[] = {
+ [IFLA_INET6_FLAGS] = { .type = NETLINK_TYPE_U32 },
+/*
+ IFLA_INET6_CONF,
+ IFLA_INET6_STATS,
+ IFLA_INET6_MCAST,
+ IFLA_INET6_CACHEINFO,
+ IFLA_INET6_ICMP6STATS,
+*/
+ [IFLA_INET6_TOKEN] = { .type = NETLINK_TYPE_IN_ADDR },
+ [IFLA_INET6_ADDR_GEN_MODE] = { .type = NETLINK_TYPE_U8 },
+};
+
+static const NLTypeSystem rtnl_af_spec_inet6_type_system = {
+ .count = ELEMENTSOF(rtnl_af_spec_inet6_types),
+ .types = rtnl_af_spec_inet6_types,
+};
+
+static const NLType rtnl_af_spec_types[] = {
+ [AF_INET6] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_af_spec_inet6_type_system },
+};
+
+static const NLTypeSystem rtnl_af_spec_type_system = {
+ .count = ELEMENTSOF(rtnl_af_spec_types),
+ .types = rtnl_af_spec_types,
+};
+
+static const NLType rtnl_link_types[] = {
+ [IFLA_ADDRESS] = { .type = NETLINK_TYPE_ETHER_ADDR },
+ [IFLA_BROADCAST] = { .type = NETLINK_TYPE_ETHER_ADDR },
+ [IFLA_IFNAME] = { .type = NETLINK_TYPE_STRING, .size = IFNAMSIZ - 1 },
+ [IFLA_MTU] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_LINK] = { .type = NETLINK_TYPE_U32 },
+/*
+ [IFLA_QDISC],
+ [IFLA_STATS],
+ [IFLA_COST],
+ [IFLA_PRIORITY],
+*/
+ [IFLA_MASTER] = { .type = NETLINK_TYPE_U32 },
+/*
+ [IFLA_WIRELESS],
+*/
+ [IFLA_PROTINFO] = { .type = NETLINK_TYPE_UNION, .type_system_union = &rtnl_prot_info_type_system_union },
+ [IFLA_TXQLEN] = { .type = NETLINK_TYPE_U32 },
+/*
+ [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) },
+*/
+ [IFLA_WEIGHT] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_OPERSTATE] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_LINKMODE] = { .type = NETLINK_TYPE_U8 },
+ [IFLA_LINKINFO] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_info_type_system },
+ [IFLA_NET_NS_PID] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_IFALIAS] = { .type = NETLINK_TYPE_STRING, .size = IFALIASZ - 1 },
+/*
+ [IFLA_NUM_VF],
+ [IFLA_VFINFO_LIST] = {. type = NETLINK_TYPE_NESTED, },
+ [IFLA_STATS64],
+ [IFLA_VF_PORTS] = { .type = NETLINK_TYPE_NESTED },
+ [IFLA_PORT_SELF] = { .type = NETLINK_TYPE_NESTED },
+*/
+ [IFLA_AF_SPEC] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_af_spec_type_system },
+/*
+ [IFLA_VF_PORTS],
+ [IFLA_PORT_SELF],
+ [IFLA_AF_SPEC],
+*/
+ [IFLA_GROUP] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_NET_NS_FD] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_EXT_MASK] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_PROMISCUITY] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_NUM_TX_QUEUES] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_NUM_RX_QUEUES] = { .type = NETLINK_TYPE_U32 },
+ [IFLA_CARRIER] = { .type = NETLINK_TYPE_U8 },
+/*
+ [IFLA_PHYS_PORT_ID] = { .type = NETLINK_TYPE_BINARY, .len = MAX_PHYS_PORT_ID_LEN },
+*/
+};
+
+static const NLTypeSystem rtnl_link_type_system = {
+ .count = ELEMENTSOF(rtnl_link_types),
+ .types = rtnl_link_types,
+};
+
+/* IFA_FLAGS was defined in kernel 3.14, but we still support older
+ * kernels where IFA_MAX is lower. */
+static const NLType rtnl_address_types[] = {
+ [IFA_ADDRESS] = { .type = NETLINK_TYPE_IN_ADDR },
+ [IFA_LOCAL] = { .type = NETLINK_TYPE_IN_ADDR },
+ [IFA_LABEL] = { .type = NETLINK_TYPE_STRING, .size = IFNAMSIZ - 1 },
+ [IFA_BROADCAST] = { .type = NETLINK_TYPE_IN_ADDR }, /* 6? */
+ [IFA_CACHEINFO] = { .type = NETLINK_TYPE_CACHE_INFO, .size = sizeof(struct ifa_cacheinfo) },
+/*
+ [IFA_ANYCAST],
+ [IFA_MULTICAST],
+*/
+ [IFA_FLAGS] = { .type = NETLINK_TYPE_U32 },
+};
+
+static const NLTypeSystem rtnl_address_type_system = {
+ .count = ELEMENTSOF(rtnl_address_types),
+ .types = rtnl_address_types,
+};
+
+static const NLType rtnl_route_types[] = {
+ [RTA_DST] = { .type = NETLINK_TYPE_IN_ADDR }, /* 6? */
+ [RTA_SRC] = { .type = NETLINK_TYPE_IN_ADDR }, /* 6? */
+ [RTA_IIF] = { .type = NETLINK_TYPE_U32 },
+ [RTA_OIF] = { .type = NETLINK_TYPE_U32 },
+ [RTA_GATEWAY] = { .type = NETLINK_TYPE_IN_ADDR },
+ [RTA_PRIORITY] = { .type = NETLINK_TYPE_U32 },
+ [RTA_PREFSRC] = { .type = NETLINK_TYPE_IN_ADDR }, /* 6? */
+/*
+ [RTA_METRICS] = { .type = NETLINK_TYPE_NESTED },
+ [RTA_MULTIPATH] = { .len = sizeof(struct rtnexthop) },
+*/
+ [RTA_FLOW] = { .type = NETLINK_TYPE_U32 }, /* 6? */
+/*
+ RTA_CACHEINFO,
+ RTA_TABLE,
+ RTA_MARK,
+ RTA_MFC_STATS,
+ RTA_VIA,
+ RTA_NEWDST,
+*/
+ [RTA_PREF] = { .type = NETLINK_TYPE_U8 },
+
+};
+
+static const NLTypeSystem rtnl_route_type_system = {
+ .count = ELEMENTSOF(rtnl_route_types),
+ .types = rtnl_route_types,
+};
+
+static const NLType rtnl_neigh_types[] = {
+ [NDA_DST] = { .type = NETLINK_TYPE_IN_ADDR },
+ [NDA_LLADDR] = { .type = NETLINK_TYPE_ETHER_ADDR },
+ [NDA_CACHEINFO] = { .type = NETLINK_TYPE_CACHE_INFO, .size = sizeof(struct nda_cacheinfo) },
+ [NDA_PROBES] = { .type = NETLINK_TYPE_U32 },
+ [NDA_VLAN] = { .type = NETLINK_TYPE_U16 },
+ [NDA_PORT] = { .type = NETLINK_TYPE_U16 },
+ [NDA_VNI] = { .type = NETLINK_TYPE_U32 },
+ [NDA_IFINDEX] = { .type = NETLINK_TYPE_U32 },
+};
+
+static const NLTypeSystem rtnl_neigh_type_system = {
+ .count = ELEMENTSOF(rtnl_neigh_types),
+ .types = rtnl_neigh_types,
+};
+
+static const NLType rtnl_types[] = {
+ [NLMSG_DONE] = { .type = NETLINK_TYPE_NESTED, .type_system = &empty_type_system, .size = 0 },
+ [NLMSG_ERROR] = { .type = NETLINK_TYPE_NESTED, .type_system = &empty_type_system, .size = sizeof(struct nlmsgerr) },
+ [RTM_NEWLINK] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
+ [RTM_DELLINK] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
+ [RTM_GETLINK] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
+ [RTM_SETLINK] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
+ [RTM_NEWADDR] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
+ [RTM_DELADDR] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
+ [RTM_GETADDR] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
+ [RTM_NEWROUTE] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
+ [RTM_DELROUTE] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
+ [RTM_GETROUTE] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
+ [RTM_NEWNEIGH] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
+ [RTM_DELNEIGH] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
+ [RTM_GETNEIGH] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
+};
+
+const NLTypeSystem type_system_root = {
+ .count = ELEMENTSOF(rtnl_types),
+ .types = rtnl_types,
+};
+
+uint16_t type_get_type(const NLType *type) {
+ assert(type);
+ return type->type;
+}
+
+size_t type_get_size(const NLType *type) {
+ assert(type);
+ return type->size;
+}
+
+void type_get_type_system(const NLType *nl_type, const NLTypeSystem **ret) {
+ assert(nl_type);
+ assert(ret);
+ assert(nl_type->type == NETLINK_TYPE_NESTED);
+ assert(nl_type->type_system);
+
+ *ret = nl_type->type_system;
+}
+
+void type_get_type_system_union(const NLType *nl_type, const NLTypeSystemUnion **ret) {
+ assert(nl_type);
+ assert(ret);
+ assert(nl_type->type == NETLINK_TYPE_UNION);
+ assert(nl_type->type_system_union);
+
+ *ret = nl_type->type_system_union;
+}
+
+uint16_t type_system_get_count(const NLTypeSystem *type_system) {
+ assert(type_system);
+ return type_system->count;
+}
+
+int type_system_get_type(const NLTypeSystem *type_system, const NLType **ret, uint16_t type) {
+ const NLType *nl_type;
+
+ assert(ret);
+ assert(type_system);
+ assert(type_system->types);
+
+ if (type >= type_system->count)
+ return -EOPNOTSUPP;
+
+ nl_type = &type_system->types[type];
+
+ if (nl_type->type == NETLINK_TYPE_UNSPEC)
+ return -EOPNOTSUPP;
+
+ *ret = nl_type;
+
+ return 0;
+}
+
+int type_system_get_type_system(const NLTypeSystem *type_system, const NLTypeSystem **ret, uint16_t type) {
+ const NLType *nl_type;
+ int r;
+
+ assert(ret);
+
+ r = type_system_get_type(type_system, &nl_type, type);
+ if (r < 0)
+ return r;
+
+ type_get_type_system(nl_type, ret);
+ return 0;
+}
+
+int type_system_get_type_system_union(const NLTypeSystem *type_system, const NLTypeSystemUnion **ret, uint16_t type) {
+ const NLType *nl_type;
+ int r;
+
+ assert(ret);
+
+ r = type_system_get_type(type_system, &nl_type, type);
+ if (r < 0)
+ return r;
+
+ type_get_type_system_union(nl_type, ret);
+ return 0;
+}
+
+int type_system_union_get_type_system(const NLTypeSystemUnion *type_system_union, const NLTypeSystem **ret, const char *key) {
+ int type;
+
+ assert(type_system_union);
+ assert(type_system_union->match_type == NL_MATCH_SIBLING);
+ assert(type_system_union->lookup);
+ assert(type_system_union->type_systems);
+ assert(ret);
+ assert(key);
+
+ type = type_system_union->lookup(key);
+ if (type < 0)
+ return -EOPNOTSUPP;
+
+ assert(type < type_system_union->num);
+
+ *ret = &type_system_union->type_systems[type];
+
+ return 0;
+}
+
+int type_system_union_protocol_get_type_system(const NLTypeSystemUnion *type_system_union, const NLTypeSystem **ret, uint16_t protocol) {
+ const NLTypeSystem *type_system;
+
+ assert(type_system_union);
+ assert(type_system_union->type_systems);
+ assert(type_system_union->match_type == NL_MATCH_PROTOCOL);
+ assert(ret);
+
+ if (protocol >= type_system_union->num)
+ return -EOPNOTSUPP;
+
+ type_system = &type_system_union->type_systems[protocol];
+ if (!type_system->types)
+ return -EOPNOTSUPP;
+
+ *ret = type_system;
+
+ return 0;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-netlink/netlink-types.h b/src/libsystemd/libsystemd-internal/sd-netlink/netlink-types.h
new file mode 100644
index 0000000000..ecb20bfcdc
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-netlink/netlink-types.h
@@ -0,0 +1,94 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2014 Tom Gundersen <teg@jklm.no>
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "macro.h"
+
+enum {
+ NETLINK_TYPE_UNSPEC,
+ NETLINK_TYPE_U8, /* NLA_U8 */
+ NETLINK_TYPE_U16, /* NLA_U16 */
+ NETLINK_TYPE_U32, /* NLA_U32 */
+ NETLINK_TYPE_U64, /* NLA_U64 */
+ NETLINK_TYPE_STRING, /* NLA_STRING */
+ NETLINK_TYPE_FLAG, /* NLA_FLAG */
+ NETLINK_TYPE_IN_ADDR,
+ NETLINK_TYPE_ETHER_ADDR,
+ NETLINK_TYPE_CACHE_INFO,
+ NETLINK_TYPE_NESTED, /* NLA_NESTED */
+ NETLINK_TYPE_UNION,
+};
+
+typedef enum NLMatchType {
+ NL_MATCH_SIBLING,
+ NL_MATCH_PROTOCOL,
+} NLMatchType;
+
+typedef struct NLTypeSystemUnion NLTypeSystemUnion;
+typedef struct NLTypeSystem NLTypeSystem;
+typedef struct NLType NLType;
+
+struct NLTypeSystemUnion {
+ int num;
+ NLMatchType match_type;
+ uint16_t match;
+ int (*lookup)(const char *);
+ const NLTypeSystem *type_systems;
+};
+
+extern const NLTypeSystem type_system_root;
+
+uint16_t type_get_type(const NLType *type);
+size_t type_get_size(const NLType *type);
+void type_get_type_system(const NLType *type, const NLTypeSystem **ret);
+void type_get_type_system_union(const NLType *type, const NLTypeSystemUnion **ret);
+
+uint16_t type_system_get_count(const NLTypeSystem *type_system);
+int type_system_get_type(const NLTypeSystem *type_system, const NLType **ret, uint16_t type);
+int type_system_get_type_system(const NLTypeSystem *type_system, const NLTypeSystem **ret, uint16_t type);
+int type_system_get_type_system_union(const NLTypeSystem *type_system, const NLTypeSystemUnion **ret, uint16_t type);
+int type_system_union_get_type_system(const NLTypeSystemUnion *type_system_union, const NLTypeSystem **ret, const char *key);
+int type_system_union_protocol_get_type_system(const NLTypeSystemUnion *type_system_union, const NLTypeSystem **ret, uint16_t protocol);
+
+typedef enum NLUnionLinkInfoData {
+ NL_UNION_LINK_INFO_DATA_BOND,
+ NL_UNION_LINK_INFO_DATA_BRIDGE,
+ NL_UNION_LINK_INFO_DATA_VLAN,
+ NL_UNION_LINK_INFO_DATA_VETH,
+ NL_UNION_LINK_INFO_DATA_DUMMY,
+ NL_UNION_LINK_INFO_DATA_MACVLAN,
+ NL_UNION_LINK_INFO_DATA_MACVTAP,
+ NL_UNION_LINK_INFO_DATA_IPVLAN,
+ NL_UNION_LINK_INFO_DATA_VXLAN,
+ NL_UNION_LINK_INFO_DATA_IPIP_TUNNEL,
+ NL_UNION_LINK_INFO_DATA_IPGRE_TUNNEL,
+ NL_UNION_LINK_INFO_DATA_IPGRETAP_TUNNEL,
+ NL_UNION_LINK_INFO_DATA_IP6GRE_TUNNEL,
+ NL_UNION_LINK_INFO_DATA_IP6GRETAP_TUNNEL,
+ NL_UNION_LINK_INFO_DATA_SIT_TUNNEL,
+ NL_UNION_LINK_INFO_DATA_VTI_TUNNEL,
+ NL_UNION_LINK_INFO_DATA_VTI6_TUNNEL,
+ NL_UNION_LINK_INFO_DATA_IP6TNL_TUNNEL,
+ _NL_UNION_LINK_INFO_DATA_MAX,
+ _NL_UNION_LINK_INFO_DATA_INVALID = -1
+} NLUnionLinkInfoData;
+
+const char *nl_union_link_info_data_to_string(NLUnionLinkInfoData p) _const_;
+NLUnionLinkInfoData nl_union_link_info_data_from_string(const char *p) _pure_;
diff --git a/src/libsystemd/libsystemd-internal/sd-netlink/netlink-util.c b/src/libsystemd/libsystemd-internal/sd-netlink/netlink-util.c
new file mode 100644
index 0000000000..828ae7db7f
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-netlink/netlink-util.c
@@ -0,0 +1,170 @@
+/***
+ This file is part of systemd.
+
+ Copyright (C) 2013 Tom Gundersen <teg@jklm.no>
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <systemd/sd-netlink.h>
+
+#include "netlink-internal.h"
+#include "netlink-util.h"
+
+int rtnl_set_link_name(sd_netlink **rtnl, int ifindex, const char *name) {
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *message = NULL;
+ int r;
+
+ assert(rtnl);
+ assert(ifindex > 0);
+ assert(name);
+
+ if (!*rtnl) {
+ r = sd_netlink_open(rtnl);
+ if (r < 0)
+ return r;
+ }
+
+ r = sd_rtnl_message_new_link(*rtnl, &message, RTM_SETLINK, ifindex);
+ if (r < 0)
+ return r;
+
+ r = sd_netlink_message_append_string(message, IFLA_IFNAME, name);
+ if (r < 0)
+ return r;
+
+ r = sd_netlink_call(*rtnl, message, 0, NULL);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+int rtnl_set_link_properties(sd_netlink **rtnl, int ifindex, const char *alias,
+ const struct ether_addr *mac, unsigned mtu) {
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *message = NULL;
+ int r;
+
+ assert(rtnl);
+ assert(ifindex > 0);
+
+ if (!alias && !mac && mtu == 0)
+ return 0;
+
+ if (!*rtnl) {
+ r = sd_netlink_open(rtnl);
+ if (r < 0)
+ return r;
+ }
+
+ r = sd_rtnl_message_new_link(*rtnl, &message, RTM_SETLINK, ifindex);
+ if (r < 0)
+ return r;
+
+ if (alias) {
+ r = sd_netlink_message_append_string(message, IFLA_IFALIAS, alias);
+ if (r < 0)
+ return r;
+ }
+
+ if (mac) {
+ r = sd_netlink_message_append_ether_addr(message, IFLA_ADDRESS, mac);
+ if (r < 0)
+ return r;
+ }
+
+ if (mtu > 0) {
+ r = sd_netlink_message_append_u32(message, IFLA_MTU, mtu);
+ if (r < 0)
+ return r;
+ }
+
+ r = sd_netlink_call(*rtnl, message, 0, NULL);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+int rtnl_message_new_synthetic_error(int error, uint32_t serial, sd_netlink_message **ret) {
+ struct nlmsgerr *err;
+ int r;
+
+ assert(error <= 0);
+
+ r = message_new(NULL, ret, NLMSG_ERROR);
+ if (r < 0)
+ return r;
+
+ (*ret)->hdr->nlmsg_seq = serial;
+
+ err = NLMSG_DATA((*ret)->hdr);
+
+ err->error = error;
+
+ return 0;
+}
+
+bool rtnl_message_type_is_neigh(uint16_t type) {
+ switch (type) {
+ case RTM_NEWNEIGH:
+ case RTM_GETNEIGH:
+ case RTM_DELNEIGH:
+ return true;
+ default:
+ return false;
+ }
+}
+
+bool rtnl_message_type_is_route(uint16_t type) {
+ switch (type) {
+ case RTM_NEWROUTE:
+ case RTM_GETROUTE:
+ case RTM_DELROUTE:
+ return true;
+ default:
+ return false;
+ }
+}
+
+bool rtnl_message_type_is_link(uint16_t type) {
+ switch (type) {
+ case RTM_NEWLINK:
+ case RTM_SETLINK:
+ case RTM_GETLINK:
+ case RTM_DELLINK:
+ return true;
+ default:
+ return false;
+ }
+}
+
+bool rtnl_message_type_is_addr(uint16_t type) {
+ switch (type) {
+ case RTM_NEWADDR:
+ case RTM_GETADDR:
+ case RTM_DELADDR:
+ return true;
+ default:
+ return false;
+ }
+}
+
+int rtnl_log_parse_error(int r) {
+ return log_error_errno(r, "Failed to parse netlink message: %m");
+}
+
+int rtnl_log_create_error(int r) {
+ return log_error_errno(r, "Failed to create netlink message: %m");
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-netlink/netlink-util.h b/src/libsystemd/libsystemd-internal/sd-netlink/netlink-util.h
new file mode 100644
index 0000000000..e8f932549f
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-netlink/netlink-util.h
@@ -0,0 +1,39 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright (C) 2013 Tom Gundersen <teg@jklm.no>
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <systemd/sd-netlink.h>
+
+#include "util.h"
+
+int rtnl_message_new_synthetic_error(int error, uint32_t serial, sd_netlink_message **ret);
+uint32_t rtnl_message_get_serial(sd_netlink_message *m);
+void rtnl_message_seal(sd_netlink_message *m);
+
+bool rtnl_message_type_is_link(uint16_t type);
+bool rtnl_message_type_is_addr(uint16_t type);
+bool rtnl_message_type_is_route(uint16_t type);
+bool rtnl_message_type_is_neigh(uint16_t type);
+
+int rtnl_set_link_name(sd_netlink **rtnl, int ifindex, const char *name);
+int rtnl_set_link_properties(sd_netlink **rtnl, int ifindex, const char *alias, const struct ether_addr *mac, unsigned mtu);
+
+int rtnl_log_parse_error(int r);
+int rtnl_log_create_error(int r);
diff --git a/src/libsystemd/libsystemd-internal/sd-netlink/rtnl-message.c b/src/libsystemd/libsystemd-internal/sd-netlink/rtnl-message.c
new file mode 100644
index 0000000000..f6482a6157
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-netlink/rtnl-message.c
@@ -0,0 +1,702 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Tom Gundersen <teg@jklm.no>
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <netinet/in.h>
+#include <stdbool.h>
+#include <unistd.h>
+
+#include <systemd/sd-netlink.h>
+
+#include "formats-util.h"
+#include "missing.h"
+#include "netlink-internal.h"
+#include "netlink-types.h"
+#include "netlink-util.h"
+#include "refcnt.h"
+#include "socket-util.h"
+#include "util.h"
+
+int sd_rtnl_message_route_set_dst_prefixlen(sd_netlink_message *m, unsigned char prefixlen) {
+ struct rtmsg *rtm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ if ((rtm->rtm_family == AF_INET && prefixlen > 32) ||
+ (rtm->rtm_family == AF_INET6 && prefixlen > 128))
+ return -ERANGE;
+
+ rtm->rtm_dst_len = prefixlen;
+
+ return 0;
+}
+
+int sd_rtnl_message_route_set_src_prefixlen(sd_netlink_message *m, unsigned char prefixlen) {
+ struct rtmsg *rtm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ if ((rtm->rtm_family == AF_INET && prefixlen > 32) ||
+ (rtm->rtm_family == AF_INET6 && prefixlen > 128))
+ return -ERANGE;
+
+ rtm->rtm_src_len = prefixlen;
+
+ return 0;
+}
+
+int sd_rtnl_message_route_set_scope(sd_netlink_message *m, unsigned char scope) {
+ struct rtmsg *rtm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ rtm->rtm_scope = scope;
+
+ return 0;
+}
+
+int sd_rtnl_message_route_set_flags(sd_netlink_message *m, unsigned flags) {
+ struct rtmsg *rtm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ rtm->rtm_flags = flags;
+
+ return 0;
+}
+
+int sd_rtnl_message_route_get_flags(sd_netlink_message *m, unsigned *flags) {
+ struct rtmsg *rtm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(flags, -EINVAL);
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ *flags = rtm->rtm_flags;
+
+ return 0;
+}
+
+int sd_rtnl_message_route_set_table(sd_netlink_message *m, unsigned char table) {
+ struct rtmsg *rtm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ rtm->rtm_table = table;
+
+ return 0;
+}
+
+int sd_rtnl_message_route_get_family(sd_netlink_message *m, int *family) {
+ struct rtmsg *rtm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(family, -EINVAL);
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ *family = rtm->rtm_family;
+
+ return 0;
+}
+
+int sd_rtnl_message_route_set_family(sd_netlink_message *m, int family) {
+ struct rtmsg *rtm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ rtm->rtm_family = family;
+
+ return 0;
+}
+
+int sd_rtnl_message_route_get_protocol(sd_netlink_message *m, unsigned char *protocol) {
+ struct rtmsg *rtm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(protocol, -EINVAL);
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ *protocol = rtm->rtm_protocol;
+
+ return 0;
+}
+
+int sd_rtnl_message_route_get_scope(sd_netlink_message *m, unsigned char *scope) {
+ struct rtmsg *rtm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(scope, -EINVAL);
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ *scope = rtm->rtm_scope;
+
+ return 0;
+}
+
+int sd_rtnl_message_route_get_tos(sd_netlink_message *m, unsigned char *tos) {
+ struct rtmsg *rtm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(tos, -EINVAL);
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ *tos = rtm->rtm_tos;
+
+ return 0;
+}
+
+int sd_rtnl_message_route_get_table(sd_netlink_message *m, unsigned char *table) {
+ struct rtmsg *rtm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(table, -EINVAL);
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ *table = rtm->rtm_table;
+
+ return 0;
+}
+
+int sd_rtnl_message_route_get_dst_prefixlen(sd_netlink_message *m, unsigned char *dst_len) {
+ struct rtmsg *rtm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(dst_len, -EINVAL);
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ *dst_len = rtm->rtm_dst_len;
+
+ return 0;
+}
+
+int sd_rtnl_message_route_get_src_prefixlen(sd_netlink_message *m, unsigned char *src_len) {
+ struct rtmsg *rtm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(src_len, -EINVAL);
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ *src_len = rtm->rtm_src_len;
+
+ return 0;
+}
+
+int sd_rtnl_message_new_route(sd_netlink *rtnl, sd_netlink_message **ret,
+ uint16_t nlmsg_type, int rtm_family,
+ unsigned char rtm_protocol) {
+ struct rtmsg *rtm;
+ int r;
+
+ assert_return(rtnl_message_type_is_route(nlmsg_type), -EINVAL);
+ assert_return((nlmsg_type == RTM_GETROUTE && rtm_family == AF_UNSPEC) ||
+ rtm_family == AF_INET || rtm_family == AF_INET6, -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ r = message_new(rtnl, ret, nlmsg_type);
+ if (r < 0)
+ return r;
+
+ if (nlmsg_type == RTM_NEWROUTE)
+ (*ret)->hdr->nlmsg_flags |= NLM_F_CREATE | NLM_F_APPEND;
+
+ rtm = NLMSG_DATA((*ret)->hdr);
+
+ rtm->rtm_family = rtm_family;
+ rtm->rtm_scope = RT_SCOPE_UNIVERSE;
+ rtm->rtm_type = RTN_UNICAST;
+ rtm->rtm_table = RT_TABLE_MAIN;
+ rtm->rtm_protocol = rtm_protocol;
+
+ return 0;
+}
+
+int sd_rtnl_message_neigh_set_flags(sd_netlink_message *m, uint8_t flags) {
+ struct ndmsg *ndm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_neigh(m->hdr->nlmsg_type), -EINVAL);
+
+ ndm = NLMSG_DATA(m->hdr);
+ ndm->ndm_flags |= flags;
+
+ return 0;
+}
+
+int sd_rtnl_message_neigh_set_state(sd_netlink_message *m, uint16_t state) {
+ struct ndmsg *ndm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_neigh(m->hdr->nlmsg_type), -EINVAL);
+
+ ndm = NLMSG_DATA(m->hdr);
+ ndm->ndm_state |= state;
+
+ return 0;
+}
+
+int sd_rtnl_message_neigh_get_flags(sd_netlink_message *m, uint8_t *flags) {
+ struct ndmsg *ndm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_neigh(m->hdr->nlmsg_type), -EINVAL);
+
+ ndm = NLMSG_DATA(m->hdr);
+ *flags = ndm->ndm_flags;
+
+ return 0;
+}
+
+int sd_rtnl_message_neigh_get_state(sd_netlink_message *m, uint16_t *state) {
+ struct ndmsg *ndm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_neigh(m->hdr->nlmsg_type), -EINVAL);
+
+ ndm = NLMSG_DATA(m->hdr);
+ *state = ndm->ndm_state;
+
+ return 0;
+}
+
+int sd_rtnl_message_neigh_get_family(sd_netlink_message *m, int *family) {
+ struct ndmsg *ndm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_neigh(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(family, -EINVAL);
+
+ ndm = NLMSG_DATA(m->hdr);
+
+ *family = ndm->ndm_family;
+
+ return 0;
+}
+
+int sd_rtnl_message_neigh_get_ifindex(sd_netlink_message *m, int *index) {
+ struct ndmsg *ndm;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_neigh(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(index, -EINVAL);
+
+ ndm = NLMSG_DATA(m->hdr);
+
+ *index = ndm->ndm_ifindex;
+
+ return 0;
+}
+
+int sd_rtnl_message_new_neigh(sd_netlink *rtnl, sd_netlink_message **ret, uint16_t nlmsg_type, int index, int ndm_family) {
+ struct ndmsg *ndm;
+ int r;
+
+ assert_return(rtnl_message_type_is_neigh(nlmsg_type), -EINVAL);
+ assert_return(ndm_family == AF_INET ||
+ ndm_family == AF_INET6 ||
+ ndm_family == PF_BRIDGE, -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ r = message_new(rtnl, ret, nlmsg_type);
+ if (r < 0)
+ return r;
+
+ if (nlmsg_type == RTM_NEWNEIGH)
+ (*ret)->hdr->nlmsg_flags |= NLM_F_CREATE | NLM_F_APPEND;
+
+ ndm = NLMSG_DATA((*ret)->hdr);
+
+ ndm->ndm_family = ndm_family;
+ ndm->ndm_ifindex = index;
+
+ return 0;
+}
+
+int sd_rtnl_message_link_set_flags(sd_netlink_message *m, unsigned flags, unsigned change) {
+ struct ifinfomsg *ifi;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(change, -EINVAL);
+
+ ifi = NLMSG_DATA(m->hdr);
+
+ ifi->ifi_flags = flags;
+ ifi->ifi_change = change;
+
+ return 0;
+}
+
+int sd_rtnl_message_link_set_type(sd_netlink_message *m, unsigned type) {
+ struct ifinfomsg *ifi;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL);
+
+ ifi = NLMSG_DATA(m->hdr);
+
+ ifi->ifi_type = type;
+
+ return 0;
+}
+
+int sd_rtnl_message_link_set_family(sd_netlink_message *m, unsigned family) {
+ struct ifinfomsg *ifi;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL);
+
+ ifi = NLMSG_DATA(m->hdr);
+
+ ifi->ifi_family = family;
+
+ return 0;
+}
+
+int sd_rtnl_message_new_link(sd_netlink *rtnl, sd_netlink_message **ret,
+ uint16_t nlmsg_type, int index) {
+ struct ifinfomsg *ifi;
+ int r;
+
+ assert_return(rtnl_message_type_is_link(nlmsg_type), -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ r = message_new(rtnl, ret, nlmsg_type);
+ if (r < 0)
+ return r;
+
+ if (nlmsg_type == RTM_NEWLINK)
+ (*ret)->hdr->nlmsg_flags |= NLM_F_CREATE | NLM_F_EXCL;
+
+ ifi = NLMSG_DATA((*ret)->hdr);
+
+ ifi->ifi_family = AF_UNSPEC;
+ ifi->ifi_index = index;
+
+ return 0;
+}
+
+int sd_rtnl_message_addr_set_prefixlen(sd_netlink_message *m, unsigned char prefixlen) {
+ struct ifaddrmsg *ifa;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL);
+
+ ifa = NLMSG_DATA(m->hdr);
+
+ if ((ifa->ifa_family == AF_INET && prefixlen > 32) ||
+ (ifa->ifa_family == AF_INET6 && prefixlen > 128))
+ return -ERANGE;
+
+ ifa->ifa_prefixlen = prefixlen;
+
+ return 0;
+}
+
+int sd_rtnl_message_addr_set_flags(sd_netlink_message *m, unsigned char flags) {
+ struct ifaddrmsg *ifa;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL);
+
+ ifa = NLMSG_DATA(m->hdr);
+
+ ifa->ifa_flags = flags;
+
+ return 0;
+}
+
+int sd_rtnl_message_addr_set_scope(sd_netlink_message *m, unsigned char scope) {
+ struct ifaddrmsg *ifa;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL);
+
+ ifa = NLMSG_DATA(m->hdr);
+
+ ifa->ifa_scope = scope;
+
+ return 0;
+}
+
+int sd_rtnl_message_addr_get_family(sd_netlink_message *m, int *family) {
+ struct ifaddrmsg *ifa;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(family, -EINVAL);
+
+ ifa = NLMSG_DATA(m->hdr);
+
+ *family = ifa->ifa_family;
+
+ return 0;
+}
+
+int sd_rtnl_message_addr_get_prefixlen(sd_netlink_message *m, unsigned char *prefixlen) {
+ struct ifaddrmsg *ifa;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(prefixlen, -EINVAL);
+
+ ifa = NLMSG_DATA(m->hdr);
+
+ *prefixlen = ifa->ifa_prefixlen;
+
+ return 0;
+}
+
+int sd_rtnl_message_addr_get_scope(sd_netlink_message *m, unsigned char *scope) {
+ struct ifaddrmsg *ifa;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(scope, -EINVAL);
+
+ ifa = NLMSG_DATA(m->hdr);
+
+ *scope = ifa->ifa_scope;
+
+ return 0;
+}
+
+int sd_rtnl_message_addr_get_flags(sd_netlink_message *m, unsigned char *flags) {
+ struct ifaddrmsg *ifa;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(flags, -EINVAL);
+
+ ifa = NLMSG_DATA(m->hdr);
+
+ *flags = ifa->ifa_flags;
+
+ return 0;
+}
+
+int sd_rtnl_message_addr_get_ifindex(sd_netlink_message *m, int *ifindex) {
+ struct ifaddrmsg *ifa;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(ifindex, -EINVAL);
+
+ ifa = NLMSG_DATA(m->hdr);
+
+ *ifindex = ifa->ifa_index;
+
+ return 0;
+}
+
+int sd_rtnl_message_new_addr(sd_netlink *rtnl, sd_netlink_message **ret,
+ uint16_t nlmsg_type, int index,
+ int family) {
+ struct ifaddrmsg *ifa;
+ int r;
+
+ assert_return(rtnl_message_type_is_addr(nlmsg_type), -EINVAL);
+ assert_return((nlmsg_type == RTM_GETADDR && index == 0) ||
+ index > 0, -EINVAL);
+ assert_return((nlmsg_type == RTM_GETADDR && family == AF_UNSPEC) ||
+ family == AF_INET || family == AF_INET6, -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ r = message_new(rtnl, ret, nlmsg_type);
+ if (r < 0)
+ return r;
+
+ if (nlmsg_type == RTM_GETADDR)
+ (*ret)->hdr->nlmsg_flags |= NLM_F_DUMP;
+
+ ifa = NLMSG_DATA((*ret)->hdr);
+
+ ifa->ifa_index = index;
+ ifa->ifa_family = family;
+ if (family == AF_INET)
+ ifa->ifa_prefixlen = 32;
+ else if (family == AF_INET6)
+ ifa->ifa_prefixlen = 128;
+
+ return 0;
+}
+
+int sd_rtnl_message_new_addr_update(sd_netlink *rtnl, sd_netlink_message **ret,
+ int index, int family) {
+ int r;
+
+ r = sd_rtnl_message_new_addr(rtnl, ret, RTM_NEWADDR, index, family);
+ if (r < 0)
+ return r;
+
+ (*ret)->hdr->nlmsg_flags |= NLM_F_REPLACE;
+
+ return 0;
+}
+
+int sd_rtnl_message_link_get_ifindex(sd_netlink_message *m, int *ifindex) {
+ struct ifinfomsg *ifi;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(ifindex, -EINVAL);
+
+ ifi = NLMSG_DATA(m->hdr);
+
+ *ifindex = ifi->ifi_index;
+
+ return 0;
+}
+
+int sd_rtnl_message_link_get_flags(sd_netlink_message *m, unsigned *flags) {
+ struct ifinfomsg *ifi;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(flags, -EINVAL);
+
+ ifi = NLMSG_DATA(m->hdr);
+
+ *flags = ifi->ifi_flags;
+
+ return 0;
+}
+
+int sd_rtnl_message_link_get_type(sd_netlink_message *m, unsigned short *type) {
+ struct ifinfomsg *ifi;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL);
+ assert_return(type, -EINVAL);
+
+ ifi = NLMSG_DATA(m->hdr);
+
+ *type = ifi->ifi_type;
+
+ return 0;
+}
+
+int sd_rtnl_message_get_family(sd_netlink_message *m, int *family) {
+ assert_return(m, -EINVAL);
+ assert_return(family, -EINVAL);
+
+ assert(m->hdr);
+
+ if (rtnl_message_type_is_link(m->hdr->nlmsg_type)) {
+ struct ifinfomsg *ifi;
+
+ ifi = NLMSG_DATA(m->hdr);
+
+ *family = ifi->ifi_family;
+
+ return 0;
+ } else if (rtnl_message_type_is_route(m->hdr->nlmsg_type)) {
+ struct rtmsg *rtm;
+
+ rtm = NLMSG_DATA(m->hdr);
+
+ *family = rtm->rtm_family;
+
+ return 0;
+ } else if (rtnl_message_type_is_neigh(m->hdr->nlmsg_type)) {
+ struct ndmsg *ndm;
+
+ ndm = NLMSG_DATA(m->hdr);
+
+ *family = ndm->ndm_family;
+
+ return 0;
+ } else if (rtnl_message_type_is_addr(m->hdr->nlmsg_type)) {
+ struct ifaddrmsg *ifa;
+
+ ifa = NLMSG_DATA(m->hdr);
+
+ *family = ifa->ifa_family;
+
+ return 0;
+ }
+
+ return -EOPNOTSUPP;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-netlink/sd-netlink.c b/src/libsystemd/libsystemd-internal/sd-netlink/sd-netlink.c
new file mode 100644
index 0000000000..3c7488463c
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-netlink/sd-netlink.c
@@ -0,0 +1,954 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Tom Gundersen <teg@jklm.no>
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <poll.h>
+#include <sys/socket.h>
+
+#include <systemd/sd-netlink.h>
+
+#include "alloc-util.h"
+#include "fd-util.h"
+#include "hashmap.h"
+#include "macro.h"
+#include "missing.h"
+#include "netlink-internal.h"
+#include "netlink-util.h"
+#include "socket-util.h"
+#include "util.h"
+
+static int sd_netlink_new(sd_netlink **ret) {
+ _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
+
+ assert_return(ret, -EINVAL);
+
+ rtnl = new0(sd_netlink, 1);
+ if (!rtnl)
+ return -ENOMEM;
+
+ rtnl->n_ref = REFCNT_INIT;
+ rtnl->fd = -1;
+ rtnl->sockaddr.nl.nl_family = AF_NETLINK;
+ rtnl->original_pid = getpid();
+
+ LIST_HEAD_INIT(rtnl->match_callbacks);
+
+ /* We guarantee that the read buffer has at least space for
+ * a message header */
+ if (!greedy_realloc((void**)&rtnl->rbuffer, &rtnl->rbuffer_allocated,
+ sizeof(struct nlmsghdr), sizeof(uint8_t)))
+ return -ENOMEM;
+
+ /* Change notification responses have sequence 0, so we must
+ * start our request sequence numbers at 1, or we may confuse our
+ * responses with notifications from the kernel */
+ rtnl->serial = 1;
+
+ *ret = rtnl;
+ rtnl = NULL;
+
+ return 0;
+}
+
+int sd_netlink_new_from_netlink(sd_netlink **ret, int fd) {
+ _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
+ socklen_t addrlen;
+ int r;
+
+ assert_return(ret, -EINVAL);
+
+ r = sd_netlink_new(&rtnl);
+ if (r < 0)
+ return r;
+
+ addrlen = sizeof(rtnl->sockaddr);
+
+ r = getsockname(fd, &rtnl->sockaddr.sa, &addrlen);
+ if (r < 0)
+ return -errno;
+
+ if (rtnl->sockaddr.nl.nl_family != AF_NETLINK)
+ return -EINVAL;
+
+ rtnl->fd = fd;
+
+ *ret = rtnl;
+ rtnl = NULL;
+
+ return 0;
+}
+
+static bool rtnl_pid_changed(sd_netlink *rtnl) {
+ assert(rtnl);
+
+ /* We don't support people creating an rtnl connection and
+ * keeping it around over a fork(). Let's complain. */
+
+ return rtnl->original_pid != getpid();
+}
+
+int sd_netlink_open_fd(sd_netlink **ret, int fd) {
+ _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
+ int r;
+
+ assert_return(ret, -EINVAL);
+ assert_return(fd >= 0, -EBADF);
+
+ r = sd_netlink_new(&rtnl);
+ if (r < 0)
+ return r;
+
+ rtnl->fd = fd;
+
+ r = socket_bind(rtnl);
+ if (r < 0) {
+ rtnl->fd = -1; /* on failure, the caller remains owner of the fd, hence don't close it here */
+ return r;
+ }
+
+ *ret = rtnl;
+ rtnl = NULL;
+
+ return 0;
+}
+
+int sd_netlink_open(sd_netlink **ret) {
+ _cleanup_close_ int fd = -1;
+ int r;
+
+ fd = socket_open(NETLINK_ROUTE);
+ if (fd < 0)
+ return fd;
+
+ r = sd_netlink_open_fd(ret, fd);
+ if (r < 0)
+ return r;
+
+ fd = -1;
+
+ return 0;
+}
+
+int sd_netlink_inc_rcvbuf(const sd_netlink *const rtnl, const int size) {
+ return fd_inc_rcvbuf(rtnl->fd, size);
+}
+
+sd_netlink *sd_netlink_ref(sd_netlink *rtnl) {
+ assert_return(rtnl, NULL);
+ assert_return(!rtnl_pid_changed(rtnl), NULL);
+
+ if (rtnl)
+ assert_se(REFCNT_INC(rtnl->n_ref) >= 2);
+
+ return rtnl;
+}
+
+sd_netlink *sd_netlink_unref(sd_netlink *rtnl) {
+ if (!rtnl)
+ return NULL;
+
+ assert_return(!rtnl_pid_changed(rtnl), NULL);
+
+ if (REFCNT_DEC(rtnl->n_ref) == 0) {
+ struct match_callback *f;
+ unsigned i;
+
+ for (i = 0; i < rtnl->rqueue_size; i++)
+ sd_netlink_message_unref(rtnl->rqueue[i]);
+ free(rtnl->rqueue);
+
+ for (i = 0; i < rtnl->rqueue_partial_size; i++)
+ sd_netlink_message_unref(rtnl->rqueue_partial[i]);
+ free(rtnl->rqueue_partial);
+
+ free(rtnl->rbuffer);
+
+ hashmap_free_free(rtnl->reply_callbacks);
+ prioq_free(rtnl->reply_callbacks_prioq);
+
+ sd_event_source_unref(rtnl->io_event_source);
+ sd_event_source_unref(rtnl->time_event_source);
+ sd_event_unref(rtnl->event);
+
+ while ((f = rtnl->match_callbacks)) {
+ sd_netlink_remove_match(rtnl, f->type, f->callback, f->userdata);
+ }
+
+ hashmap_free(rtnl->broadcast_group_refs);
+
+ safe_close(rtnl->fd);
+ free(rtnl);
+ }
+
+ return NULL;
+}
+
+static void rtnl_seal_message(sd_netlink *rtnl, sd_netlink_message *m) {
+ assert(rtnl);
+ assert(!rtnl_pid_changed(rtnl));
+ assert(m);
+ assert(m->hdr);
+
+ /* don't use seq == 0, as that is used for broadcasts, so we
+ would get confused by replies to such messages */
+ m->hdr->nlmsg_seq = rtnl->serial++ ? : rtnl->serial++;
+
+ rtnl_message_seal(m);
+
+ return;
+}
+
+int sd_netlink_send(sd_netlink *nl,
+ sd_netlink_message *message,
+ uint32_t *serial) {
+ int r;
+
+ assert_return(nl, -EINVAL);
+ assert_return(!rtnl_pid_changed(nl), -ECHILD);
+ assert_return(message, -EINVAL);
+ assert_return(!message->sealed, -EPERM);
+
+ rtnl_seal_message(nl, message);
+
+ r = socket_write_message(nl, message);
+ if (r < 0)
+ return r;
+
+ if (serial)
+ *serial = rtnl_message_get_serial(message);
+
+ return 1;
+}
+
+int rtnl_rqueue_make_room(sd_netlink *rtnl) {
+ assert(rtnl);
+
+ if (rtnl->rqueue_size >= RTNL_RQUEUE_MAX) {
+ log_debug("rtnl: exhausted the read queue size (%d)", RTNL_RQUEUE_MAX);
+ return -ENOBUFS;
+ }
+
+ if (!GREEDY_REALLOC(rtnl->rqueue, rtnl->rqueue_allocated, rtnl->rqueue_size + 1))
+ return -ENOMEM;
+
+ return 0;
+}
+
+int rtnl_rqueue_partial_make_room(sd_netlink *rtnl) {
+ assert(rtnl);
+
+ if (rtnl->rqueue_partial_size >= RTNL_RQUEUE_MAX) {
+ log_debug("rtnl: exhausted the partial read queue size (%d)", RTNL_RQUEUE_MAX);
+ return -ENOBUFS;
+ }
+
+ if (!GREEDY_REALLOC(rtnl->rqueue_partial, rtnl->rqueue_partial_allocated,
+ rtnl->rqueue_partial_size + 1))
+ return -ENOMEM;
+
+ return 0;
+}
+
+static int dispatch_rqueue(sd_netlink *rtnl, sd_netlink_message **message) {
+ int r;
+
+ assert(rtnl);
+ assert(message);
+
+ if (rtnl->rqueue_size <= 0) {
+ /* Try to read a new message */
+ r = socket_read_message(rtnl);
+ if (r <= 0)
+ return r;
+ }
+
+ /* Dispatch a queued message */
+ *message = rtnl->rqueue[0];
+ rtnl->rqueue_size--;
+ memmove(rtnl->rqueue, rtnl->rqueue + 1, sizeof(sd_netlink_message*) * rtnl->rqueue_size);
+
+ return 1;
+}
+
+static int process_timeout(sd_netlink *rtnl) {
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
+ struct reply_callback *c;
+ usec_t n;
+ int r;
+
+ assert(rtnl);
+
+ c = prioq_peek(rtnl->reply_callbacks_prioq);
+ if (!c)
+ return 0;
+
+ n = now(CLOCK_MONOTONIC);
+ if (c->timeout > n)
+ return 0;
+
+ r = rtnl_message_new_synthetic_error(-ETIMEDOUT, c->serial, &m);
+ if (r < 0)
+ return r;
+
+ assert_se(prioq_pop(rtnl->reply_callbacks_prioq) == c);
+ hashmap_remove(rtnl->reply_callbacks, &c->serial);
+
+ r = c->callback(rtnl, m, c->userdata);
+ if (r < 0)
+ log_debug_errno(r, "sd-netlink: timedout callback failed: %m");
+
+ free(c);
+
+ return 1;
+}
+
+static int process_reply(sd_netlink *rtnl, sd_netlink_message *m) {
+ _cleanup_free_ struct reply_callback *c = NULL;
+ uint64_t serial;
+ uint16_t type;
+ int r;
+
+ assert(rtnl);
+ assert(m);
+
+ serial = rtnl_message_get_serial(m);
+ c = hashmap_remove(rtnl->reply_callbacks, &serial);
+ if (!c)
+ return 0;
+
+ if (c->timeout != 0)
+ prioq_remove(rtnl->reply_callbacks_prioq, c, &c->prioq_idx);
+
+ r = sd_netlink_message_get_type(m, &type);
+ if (r < 0)
+ return 0;
+
+ if (type == NLMSG_DONE)
+ m = NULL;
+
+ r = c->callback(rtnl, m, c->userdata);
+ if (r < 0)
+ log_debug_errno(r, "sd-netlink: callback failed: %m");
+
+ return 1;
+}
+
+static int process_match(sd_netlink *rtnl, sd_netlink_message *m) {
+ struct match_callback *c;
+ uint16_t type;
+ int r;
+
+ assert(rtnl);
+ assert(m);
+
+ r = sd_netlink_message_get_type(m, &type);
+ if (r < 0)
+ return r;
+
+ LIST_FOREACH(match_callbacks, c, rtnl->match_callbacks) {
+ if (type == c->type) {
+ r = c->callback(rtnl, m, c->userdata);
+ if (r != 0) {
+ if (r < 0)
+ log_debug_errno(r, "sd-netlink: match callback failed: %m");
+
+ break;
+ }
+ }
+ }
+
+ return 1;
+}
+
+static int process_running(sd_netlink *rtnl, sd_netlink_message **ret) {
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
+ int r;
+
+ assert(rtnl);
+
+ r = process_timeout(rtnl);
+ if (r != 0)
+ goto null_message;
+
+ r = dispatch_rqueue(rtnl, &m);
+ if (r < 0)
+ return r;
+ if (!m)
+ goto null_message;
+
+ if (sd_netlink_message_is_broadcast(m)) {
+ r = process_match(rtnl, m);
+ if (r != 0)
+ goto null_message;
+ } else {
+ r = process_reply(rtnl, m);
+ if (r != 0)
+ goto null_message;
+ }
+
+ if (ret) {
+ *ret = m;
+ m = NULL;
+
+ return 1;
+ }
+
+ return 1;
+
+null_message:
+ if (r >= 0 && ret)
+ *ret = NULL;
+
+ return r;
+}
+
+int sd_netlink_process(sd_netlink *rtnl, sd_netlink_message **ret) {
+ NETLINK_DONT_DESTROY(rtnl);
+ int r;
+
+ assert_return(rtnl, -EINVAL);
+ assert_return(!rtnl_pid_changed(rtnl), -ECHILD);
+ assert_return(!rtnl->processing, -EBUSY);
+
+ rtnl->processing = true;
+ r = process_running(rtnl, ret);
+ rtnl->processing = false;
+
+ return r;
+}
+
+static usec_t calc_elapse(uint64_t usec) {
+ if (usec == (uint64_t) -1)
+ return 0;
+
+ if (usec == 0)
+ usec = RTNL_DEFAULT_TIMEOUT;
+
+ return now(CLOCK_MONOTONIC) + usec;
+}
+
+static int rtnl_poll(sd_netlink *rtnl, bool need_more, uint64_t timeout_usec) {
+ struct pollfd p[1] = {};
+ struct timespec ts;
+ usec_t m = USEC_INFINITY;
+ int r, e;
+
+ assert(rtnl);
+
+ e = sd_netlink_get_events(rtnl);
+ if (e < 0)
+ return e;
+
+ if (need_more)
+ /* Caller wants more data, and doesn't care about
+ * what's been read or any other timeouts. */
+ e |= POLLIN;
+ else {
+ usec_t until;
+ /* Caller wants to process if there is something to
+ * process, but doesn't care otherwise */
+
+ r = sd_netlink_get_timeout(rtnl, &until);
+ if (r < 0)
+ return r;
+ if (r > 0) {
+ usec_t nw;
+ nw = now(CLOCK_MONOTONIC);
+ m = until > nw ? until - nw : 0;
+ }
+ }
+
+ if (timeout_usec != (uint64_t) -1 && (m == (uint64_t) -1 || timeout_usec < m))
+ m = timeout_usec;
+
+ p[0].fd = rtnl->fd;
+ p[0].events = e;
+
+ r = ppoll(p, 1, m == (uint64_t) -1 ? NULL : timespec_store(&ts, m), NULL);
+ if (r < 0)
+ return -errno;
+
+ return r > 0 ? 1 : 0;
+}
+
+int sd_netlink_wait(sd_netlink *nl, uint64_t timeout_usec) {
+ assert_return(nl, -EINVAL);
+ assert_return(!rtnl_pid_changed(nl), -ECHILD);
+
+ if (nl->rqueue_size > 0)
+ return 0;
+
+ return rtnl_poll(nl, false, timeout_usec);
+}
+
+static int timeout_compare(const void *a, const void *b) {
+ const struct reply_callback *x = a, *y = b;
+
+ if (x->timeout != 0 && y->timeout == 0)
+ return -1;
+
+ if (x->timeout == 0 && y->timeout != 0)
+ return 1;
+
+ if (x->timeout < y->timeout)
+ return -1;
+
+ if (x->timeout > y->timeout)
+ return 1;
+
+ return 0;
+}
+
+int sd_netlink_call_async(sd_netlink *nl,
+ sd_netlink_message *m,
+ sd_netlink_message_handler_t callback,
+ void *userdata,
+ uint64_t usec,
+ uint32_t *serial) {
+ struct reply_callback *c;
+ uint32_t s;
+ int r, k;
+
+ assert_return(nl, -EINVAL);
+ assert_return(m, -EINVAL);
+ assert_return(callback, -EINVAL);
+ assert_return(!rtnl_pid_changed(nl), -ECHILD);
+
+ r = hashmap_ensure_allocated(&nl->reply_callbacks, &uint64_hash_ops);
+ if (r < 0)
+ return r;
+
+ if (usec != (uint64_t) -1) {
+ r = prioq_ensure_allocated(&nl->reply_callbacks_prioq, timeout_compare);
+ if (r < 0)
+ return r;
+ }
+
+ c = new0(struct reply_callback, 1);
+ if (!c)
+ return -ENOMEM;
+
+ c->callback = callback;
+ c->userdata = userdata;
+ c->timeout = calc_elapse(usec);
+
+ k = sd_netlink_send(nl, m, &s);
+ if (k < 0) {
+ free(c);
+ return k;
+ }
+
+ c->serial = s;
+
+ r = hashmap_put(nl->reply_callbacks, &c->serial, c);
+ if (r < 0) {
+ free(c);
+ return r;
+ }
+
+ if (c->timeout != 0) {
+ r = prioq_put(nl->reply_callbacks_prioq, c, &c->prioq_idx);
+ if (r > 0) {
+ c->timeout = 0;
+ sd_netlink_call_async_cancel(nl, c->serial);
+ return r;
+ }
+ }
+
+ if (serial)
+ *serial = s;
+
+ return k;
+}
+
+int sd_netlink_call_async_cancel(sd_netlink *nl, uint32_t serial) {
+ struct reply_callback *c;
+ uint64_t s = serial;
+
+ assert_return(nl, -EINVAL);
+ assert_return(serial != 0, -EINVAL);
+ assert_return(!rtnl_pid_changed(nl), -ECHILD);
+
+ c = hashmap_remove(nl->reply_callbacks, &s);
+ if (!c)
+ return 0;
+
+ if (c->timeout != 0)
+ prioq_remove(nl->reply_callbacks_prioq, c, &c->prioq_idx);
+
+ free(c);
+ return 1;
+}
+
+int sd_netlink_call(sd_netlink *rtnl,
+ sd_netlink_message *message,
+ uint64_t usec,
+ sd_netlink_message **ret) {
+ usec_t timeout;
+ uint32_t serial;
+ int r;
+
+ assert_return(rtnl, -EINVAL);
+ assert_return(!rtnl_pid_changed(rtnl), -ECHILD);
+ assert_return(message, -EINVAL);
+
+ r = sd_netlink_send(rtnl, message, &serial);
+ if (r < 0)
+ return r;
+
+ timeout = calc_elapse(usec);
+
+ for (;;) {
+ usec_t left;
+ unsigned i;
+
+ for (i = 0; i < rtnl->rqueue_size; i++) {
+ uint32_t received_serial;
+
+ received_serial = rtnl_message_get_serial(rtnl->rqueue[i]);
+
+ if (received_serial == serial) {
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *incoming = NULL;
+ uint16_t type;
+
+ incoming = rtnl->rqueue[i];
+
+ /* found a match, remove from rqueue and return it */
+ memmove(rtnl->rqueue + i,rtnl->rqueue + i + 1,
+ sizeof(sd_netlink_message*) * (rtnl->rqueue_size - i - 1));
+ rtnl->rqueue_size--;
+
+ r = sd_netlink_message_get_errno(incoming);
+ if (r < 0)
+ return r;
+
+ r = sd_netlink_message_get_type(incoming, &type);
+ if (r < 0)
+ return r;
+
+ if (type == NLMSG_DONE) {
+ *ret = NULL;
+ return 0;
+ }
+
+ if (ret) {
+ *ret = incoming;
+ incoming = NULL;
+ }
+
+ return 1;
+ }
+ }
+
+ r = socket_read_message(rtnl);
+ if (r < 0)
+ return r;
+ if (r > 0)
+ /* received message, so try to process straight away */
+ continue;
+
+ if (timeout > 0) {
+ usec_t n;
+
+ n = now(CLOCK_MONOTONIC);
+ if (n >= timeout)
+ return -ETIMEDOUT;
+
+ left = timeout - n;
+ } else
+ left = (uint64_t) -1;
+
+ r = rtnl_poll(rtnl, true, left);
+ if (r < 0)
+ return r;
+ else if (r == 0)
+ return -ETIMEDOUT;
+ }
+}
+
+int sd_netlink_get_events(sd_netlink *rtnl) {
+ assert_return(rtnl, -EINVAL);
+ assert_return(!rtnl_pid_changed(rtnl), -ECHILD);
+
+ if (rtnl->rqueue_size == 0)
+ return POLLIN;
+ else
+ return 0;
+}
+
+int sd_netlink_get_timeout(sd_netlink *rtnl, uint64_t *timeout_usec) {
+ struct reply_callback *c;
+
+ assert_return(rtnl, -EINVAL);
+ assert_return(timeout_usec, -EINVAL);
+ assert_return(!rtnl_pid_changed(rtnl), -ECHILD);
+
+ if (rtnl->rqueue_size > 0) {
+ *timeout_usec = 0;
+ return 1;
+ }
+
+ c = prioq_peek(rtnl->reply_callbacks_prioq);
+ if (!c) {
+ *timeout_usec = (uint64_t) -1;
+ return 0;
+ }
+
+ *timeout_usec = c->timeout;
+
+ return 1;
+}
+
+static int io_callback(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
+ sd_netlink *rtnl = userdata;
+ int r;
+
+ assert(rtnl);
+
+ r = sd_netlink_process(rtnl, NULL);
+ if (r < 0)
+ return r;
+
+ return 1;
+}
+
+static int time_callback(sd_event_source *s, uint64_t usec, void *userdata) {
+ sd_netlink *rtnl = userdata;
+ int r;
+
+ assert(rtnl);
+
+ r = sd_netlink_process(rtnl, NULL);
+ if (r < 0)
+ return r;
+
+ return 1;
+}
+
+static int prepare_callback(sd_event_source *s, void *userdata) {
+ sd_netlink *rtnl = userdata;
+ int r, e;
+ usec_t until;
+
+ assert(s);
+ assert(rtnl);
+
+ e = sd_netlink_get_events(rtnl);
+ if (e < 0)
+ return e;
+
+ r = sd_event_source_set_io_events(rtnl->io_event_source, e);
+ if (r < 0)
+ return r;
+
+ r = sd_netlink_get_timeout(rtnl, &until);
+ if (r < 0)
+ return r;
+ if (r > 0) {
+ int j;
+
+ j = sd_event_source_set_time(rtnl->time_event_source, until);
+ if (j < 0)
+ return j;
+ }
+
+ r = sd_event_source_set_enabled(rtnl->time_event_source, r > 0);
+ if (r < 0)
+ return r;
+
+ return 1;
+}
+
+int sd_netlink_attach_event(sd_netlink *rtnl, sd_event *event, int64_t priority) {
+ int r;
+
+ assert_return(rtnl, -EINVAL);
+ assert_return(!rtnl->event, -EBUSY);
+
+ assert(!rtnl->io_event_source);
+ assert(!rtnl->time_event_source);
+
+ if (event)
+ rtnl->event = sd_event_ref(event);
+ else {
+ r = sd_event_default(&rtnl->event);
+ if (r < 0)
+ return r;
+ }
+
+ r = sd_event_add_io(rtnl->event, &rtnl->io_event_source, rtnl->fd, 0, io_callback, rtnl);
+ if (r < 0)
+ goto fail;
+
+ r = sd_event_source_set_priority(rtnl->io_event_source, priority);
+ if (r < 0)
+ goto fail;
+
+ r = sd_event_source_set_description(rtnl->io_event_source, "rtnl-receive-message");
+ if (r < 0)
+ goto fail;
+
+ r = sd_event_source_set_prepare(rtnl->io_event_source, prepare_callback);
+ if (r < 0)
+ goto fail;
+
+ r = sd_event_add_time(rtnl->event, &rtnl->time_event_source, CLOCK_MONOTONIC, 0, 0, time_callback, rtnl);
+ if (r < 0)
+ goto fail;
+
+ r = sd_event_source_set_priority(rtnl->time_event_source, priority);
+ if (r < 0)
+ goto fail;
+
+ r = sd_event_source_set_description(rtnl->time_event_source, "rtnl-timer");
+ if (r < 0)
+ goto fail;
+
+ return 0;
+
+fail:
+ sd_netlink_detach_event(rtnl);
+ return r;
+}
+
+int sd_netlink_detach_event(sd_netlink *rtnl) {
+ assert_return(rtnl, -EINVAL);
+ assert_return(rtnl->event, -ENXIO);
+
+ rtnl->io_event_source = sd_event_source_unref(rtnl->io_event_source);
+
+ rtnl->time_event_source = sd_event_source_unref(rtnl->time_event_source);
+
+ rtnl->event = sd_event_unref(rtnl->event);
+
+ return 0;
+}
+
+int sd_netlink_add_match(sd_netlink *rtnl,
+ uint16_t type,
+ sd_netlink_message_handler_t callback,
+ void *userdata) {
+ _cleanup_free_ struct match_callback *c = NULL;
+ int r;
+
+ assert_return(rtnl, -EINVAL);
+ assert_return(callback, -EINVAL);
+ assert_return(!rtnl_pid_changed(rtnl), -ECHILD);
+
+ c = new0(struct match_callback, 1);
+ if (!c)
+ return -ENOMEM;
+
+ c->callback = callback;
+ c->type = type;
+ c->userdata = userdata;
+
+ switch (type) {
+ case RTM_NEWLINK:
+ case RTM_DELLINK:
+ r = socket_broadcast_group_ref(rtnl, RTNLGRP_LINK);
+ if (r < 0)
+ return r;
+
+ break;
+ case RTM_NEWADDR:
+ case RTM_DELADDR:
+ r = socket_broadcast_group_ref(rtnl, RTNLGRP_IPV4_IFADDR);
+ if (r < 0)
+ return r;
+
+ r = socket_broadcast_group_ref(rtnl, RTNLGRP_IPV6_IFADDR);
+ if (r < 0)
+ return r;
+
+ break;
+ case RTM_NEWROUTE:
+ case RTM_DELROUTE:
+ r = socket_broadcast_group_ref(rtnl, RTNLGRP_IPV4_ROUTE);
+ if (r < 0)
+ return r;
+
+ r = socket_broadcast_group_ref(rtnl, RTNLGRP_IPV6_ROUTE);
+ if (r < 0)
+ return r;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ LIST_PREPEND(match_callbacks, rtnl->match_callbacks, c);
+
+ c = NULL;
+
+ return 0;
+}
+
+int sd_netlink_remove_match(sd_netlink *rtnl,
+ uint16_t type,
+ sd_netlink_message_handler_t callback,
+ void *userdata) {
+ struct match_callback *c;
+ int r;
+
+ assert_return(rtnl, -EINVAL);
+ assert_return(callback, -EINVAL);
+ assert_return(!rtnl_pid_changed(rtnl), -ECHILD);
+
+ LIST_FOREACH(match_callbacks, c, rtnl->match_callbacks)
+ if (c->callback == callback && c->type == type && c->userdata == userdata) {
+ LIST_REMOVE(match_callbacks, rtnl->match_callbacks, c);
+ free(c);
+
+ switch (type) {
+ case RTM_NEWLINK:
+ case RTM_DELLINK:
+ r = socket_broadcast_group_unref(rtnl, RTNLGRP_LINK);
+ if (r < 0)
+ return r;
+
+ break;
+ case RTM_NEWADDR:
+ case RTM_DELADDR:
+ r = socket_broadcast_group_unref(rtnl, RTNLGRP_IPV4_IFADDR);
+ if (r < 0)
+ return r;
+
+ r = socket_broadcast_group_unref(rtnl, RTNLGRP_IPV6_IFADDR);
+ if (r < 0)
+ return r;
+
+ break;
+ case RTM_NEWROUTE:
+ case RTM_DELROUTE:
+ r = socket_broadcast_group_unref(rtnl, RTNLGRP_IPV4_ROUTE);
+ if (r < 0)
+ return r;
+
+ r = socket_broadcast_group_unref(rtnl, RTNLGRP_IPV6_ROUTE);
+ if (r < 0)
+ return r;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ return 1;
+ }
+
+ return 0;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-netlink/test-netlink.c b/src/libsystemd/libsystemd-internal/sd-netlink/test-netlink.c
new file mode 100644
index 0000000000..aadd0f06a8
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-netlink/test-netlink.c
@@ -0,0 +1,440 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Tom Gundersen <teg@jklm.no>
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <net/if.h>
+#include <netinet/ether.h>
+
+#include <systemd/sd-netlink.h>
+
+#include "ether-addr-util.h"
+#include "macro.h"
+#include "missing.h"
+#include "netlink-util.h"
+#include "socket-util.h"
+#include "string-util.h"
+#include "util.h"
+
+static void test_message_link_bridge(sd_netlink *rtnl) {
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *message = NULL;
+ uint32_t cost;
+
+ assert_se(sd_rtnl_message_new_link(rtnl, &message, RTM_NEWLINK, 1) >= 0);
+ assert_se(sd_rtnl_message_link_set_family(message, PF_BRIDGE) >= 0);
+ assert_se(sd_netlink_message_open_container(message, IFLA_PROTINFO) >= 0);
+ assert_se(sd_netlink_message_append_u32(message, IFLA_BRPORT_COST, 10) >= 0);
+ assert_se(sd_netlink_message_close_container(message) >= 0);
+
+ assert_se(sd_netlink_message_rewind(message) >= 0);
+
+ assert_se(sd_netlink_message_enter_container(message, IFLA_PROTINFO) >= 0);
+ assert_se(sd_netlink_message_read_u32(message, IFLA_BRPORT_COST, &cost) >= 0);
+ assert_se(cost == 10);
+ assert_se(sd_netlink_message_exit_container(message) >= 0);
+}
+
+static void test_link_configure(sd_netlink *rtnl, int ifindex) {
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *message = NULL;
+ const char *mac = "98:fe:94:3f:c6:18", *name = "test";
+ char buffer[ETHER_ADDR_TO_STRING_MAX];
+ unsigned int mtu = 1450, mtu_out;
+ const char *name_out;
+ struct ether_addr mac_out;
+
+ /* we'd really like to test NEWLINK, but let's not mess with the running kernel */
+ assert_se(sd_rtnl_message_new_link(rtnl, &message, RTM_GETLINK, ifindex) >= 0);
+ assert_se(sd_netlink_message_append_string(message, IFLA_IFNAME, name) >= 0);
+ assert_se(sd_netlink_message_append_ether_addr(message, IFLA_ADDRESS, ether_aton(mac)) >= 0);
+ assert_se(sd_netlink_message_append_u32(message, IFLA_MTU, mtu) >= 0);
+
+ assert_se(sd_netlink_call(rtnl, message, 0, NULL) == 1);
+ assert_se(sd_netlink_message_rewind(message) >= 0);
+
+ assert_se(sd_netlink_message_read_string(message, IFLA_IFNAME, &name_out) >= 0);
+ assert_se(streq(name, name_out));
+
+ assert_se(sd_netlink_message_read_ether_addr(message, IFLA_ADDRESS, &mac_out) >= 0);
+ assert_se(streq(mac, ether_addr_to_string(&mac_out, buffer)));
+
+ assert_se(sd_netlink_message_read_u32(message, IFLA_MTU, &mtu_out) >= 0);
+ assert_se(mtu == mtu_out);
+}
+
+static void test_link_get(sd_netlink *rtnl, int ifindex) {
+ sd_netlink_message *m;
+ sd_netlink_message *r;
+ unsigned int mtu = 1500;
+ const char *str_data;
+ uint8_t u8_data;
+ uint32_t u32_data;
+ struct ether_addr eth_data;
+
+ assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, ifindex) >= 0);
+ assert_se(m);
+
+ /* u8 test cases */
+ assert_se(sd_netlink_message_append_u8(m, IFLA_CARRIER, 0) >= 0);
+ assert_se(sd_netlink_message_append_u8(m, IFLA_OPERSTATE, 0) >= 0);
+ assert_se(sd_netlink_message_append_u8(m, IFLA_LINKMODE, 0) >= 0);
+
+ /* u32 test cases */
+ assert_se(sd_netlink_message_append_u32(m, IFLA_MTU, mtu) >= 0);
+ assert_se(sd_netlink_message_append_u32(m, IFLA_GROUP, 0) >= 0);
+ assert_se(sd_netlink_message_append_u32(m, IFLA_TXQLEN, 0) >= 0);
+ assert_se(sd_netlink_message_append_u32(m, IFLA_NUM_TX_QUEUES, 0) >= 0);
+ assert_se(sd_netlink_message_append_u32(m, IFLA_NUM_RX_QUEUES, 0) >= 0);
+
+ assert_se(sd_netlink_call(rtnl, m, -1, &r) == 1);
+
+ assert_se(sd_netlink_message_read_string(r, IFLA_IFNAME, &str_data) == 0);
+
+ assert_se(sd_netlink_message_read_u8(r, IFLA_CARRIER, &u8_data) == 0);
+ assert_se(sd_netlink_message_read_u8(r, IFLA_OPERSTATE, &u8_data) == 0);
+ assert_se(sd_netlink_message_read_u8(r, IFLA_LINKMODE, &u8_data) == 0);
+
+ assert_se(sd_netlink_message_read_u32(r, IFLA_MTU, &u32_data) == 0);
+ assert_se(sd_netlink_message_read_u32(r, IFLA_GROUP, &u32_data) == 0);
+ assert_se(sd_netlink_message_read_u32(r, IFLA_TXQLEN, &u32_data) == 0);
+ assert_se(sd_netlink_message_read_u32(r, IFLA_NUM_TX_QUEUES, &u32_data) == 0);
+ assert_se(sd_netlink_message_read_u32(r, IFLA_NUM_RX_QUEUES, &u32_data) == 0);
+
+ assert_se(sd_netlink_message_read_ether_addr(r, IFLA_ADDRESS, &eth_data) == 0);
+
+ assert_se((m = sd_netlink_message_unref(m)) == NULL);
+ assert_se((r = sd_netlink_message_unref(r)) == NULL);
+}
+
+
+static void test_address_get(sd_netlink *rtnl, int ifindex) {
+ sd_netlink_message *m;
+ sd_netlink_message *r;
+ struct in_addr in_data;
+ struct ifa_cacheinfo cache;
+ const char *label;
+
+ assert_se(sd_rtnl_message_new_addr(rtnl, &m, RTM_GETADDR, ifindex, AF_INET) >= 0);
+ assert_se(m);
+
+ assert_se(sd_netlink_call(rtnl, m, -1, &r) == 1);
+
+ assert_se(sd_netlink_message_read_in_addr(r, IFA_LOCAL, &in_data) == 0);
+ assert_se(sd_netlink_message_read_in_addr(r, IFA_ADDRESS, &in_data) == 0);
+ assert_se(sd_netlink_message_read_string(r, IFA_LABEL, &label) == 0);
+ assert_se(sd_netlink_message_read_cache_info(r, IFA_CACHEINFO, &cache) == 0);
+
+ assert_se((m = sd_netlink_message_unref(m)) == NULL);
+ assert_se((r = sd_netlink_message_unref(r)) == NULL);
+
+}
+
+static void test_route(void) {
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req;
+ struct in_addr addr, addr_data;
+ uint32_t index = 2, u32_data;
+ int r;
+
+ r = sd_rtnl_message_new_route(NULL, &req, RTM_NEWROUTE, AF_INET, RTPROT_STATIC);
+ if (r < 0) {
+ log_error_errno(r, "Could not create RTM_NEWROUTE message: %m");
+ return;
+ }
+
+ addr.s_addr = htonl(INADDR_LOOPBACK);
+
+ r = sd_netlink_message_append_in_addr(req, RTA_GATEWAY, &addr);
+ if (r < 0) {
+ log_error_errno(r, "Could not append RTA_GATEWAY attribute: %m");
+ return;
+ }
+
+ r = sd_netlink_message_append_u32(req, RTA_OIF, index);
+ if (r < 0) {
+ log_error_errno(r, "Could not append RTA_OIF attribute: %m");
+ return;
+ }
+
+ assert_se(sd_netlink_message_rewind(req) >= 0);
+
+ assert_se(sd_netlink_message_read_in_addr(req, RTA_GATEWAY, &addr_data) >= 0);
+ assert_se(addr_data.s_addr == addr.s_addr);
+
+ assert_se(sd_netlink_message_read_u32(req, RTA_OIF, &u32_data) >= 0);
+ assert_se(u32_data == index);
+
+ assert_se((req = sd_netlink_message_unref(req)) == NULL);
+}
+
+static void test_multiple(void) {
+ sd_netlink *rtnl1, *rtnl2;
+
+ assert_se(sd_netlink_open(&rtnl1) >= 0);
+ assert_se(sd_netlink_open(&rtnl2) >= 0);
+
+ rtnl1 = sd_netlink_unref(rtnl1);
+ rtnl2 = sd_netlink_unref(rtnl2);
+}
+
+static int link_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) {
+ char *ifname = userdata;
+ const char *data;
+
+ assert_se(rtnl);
+ assert_se(m);
+
+ log_info("got link info about %s", ifname);
+ free(ifname);
+
+ assert_se(sd_netlink_message_read_string(m, IFLA_IFNAME, &data) >= 0);
+ assert_se(streq(data, "lo"));
+
+ return 1;
+}
+
+static void test_event_loop(int ifindex) {
+ _cleanup_(sd_event_unrefp) sd_event *event = NULL;
+ _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
+ char *ifname;
+
+ ifname = strdup("lo2");
+ assert_se(ifname);
+
+ assert_se(sd_netlink_open(&rtnl) >= 0);
+ assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, ifindex) >= 0);
+
+ assert_se(sd_netlink_call_async(rtnl, m, link_handler, ifname, 0, NULL) >= 0);
+
+ assert_se(sd_event_default(&event) >= 0);
+
+ assert_se(sd_netlink_attach_event(rtnl, event, 0) >= 0);
+
+ assert_se(sd_event_run(event, 0) >= 0);
+
+ assert_se(sd_netlink_detach_event(rtnl) >= 0);
+
+ assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL);
+}
+
+static int pipe_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) {
+ int *counter = userdata;
+ int r;
+
+ (*counter)--;
+
+ r = sd_netlink_message_get_errno(m);
+
+ log_info_errno(r, "%d left in pipe. got reply: %m", *counter);
+
+ assert_se(r >= 0);
+
+ return 1;
+}
+
+static void test_async(int ifindex) {
+ _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL, *r = NULL;
+ uint32_t serial;
+ char *ifname;
+
+ ifname = strdup("lo");
+ assert_se(ifname);
+
+ assert_se(sd_netlink_open(&rtnl) >= 0);
+
+ assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, ifindex) >= 0);
+
+ assert_se(sd_netlink_call_async(rtnl, m, link_handler, ifname, 0, &serial) >= 0);
+
+ assert_se(sd_netlink_wait(rtnl, 0) >= 0);
+ assert_se(sd_netlink_process(rtnl, &r) >= 0);
+
+ assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL);
+}
+
+static void test_pipe(int ifindex) {
+ _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m1 = NULL, *m2 = NULL;
+ int counter = 0;
+
+ assert_se(sd_netlink_open(&rtnl) >= 0);
+
+ assert_se(sd_rtnl_message_new_link(rtnl, &m1, RTM_GETLINK, ifindex) >= 0);
+ assert_se(sd_rtnl_message_new_link(rtnl, &m2, RTM_GETLINK, ifindex) >= 0);
+
+ counter++;
+ assert_se(sd_netlink_call_async(rtnl, m1, pipe_handler, &counter, 0, NULL) >= 0);
+
+ counter++;
+ assert_se(sd_netlink_call_async(rtnl, m2, pipe_handler, &counter, 0, NULL) >= 0);
+
+ while (counter > 0) {
+ assert_se(sd_netlink_wait(rtnl, 0) >= 0);
+ assert_se(sd_netlink_process(rtnl, NULL) >= 0);
+ }
+
+ assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL);
+}
+
+static void test_container(void) {
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
+ uint16_t u16_data;
+ uint32_t u32_data;
+ const char *string_data;
+
+ assert_se(sd_rtnl_message_new_link(NULL, &m, RTM_NEWLINK, 0) >= 0);
+
+ assert_se(sd_netlink_message_open_container(m, IFLA_LINKINFO) >= 0);
+ assert_se(sd_netlink_message_open_container_union(m, IFLA_INFO_DATA, "vlan") >= 0);
+ assert_se(sd_netlink_message_append_u16(m, IFLA_VLAN_ID, 100) >= 0);
+ assert_se(sd_netlink_message_close_container(m) >= 0);
+ assert_se(sd_netlink_message_append_string(m, IFLA_INFO_KIND, "vlan") >= 0);
+ assert_se(sd_netlink_message_close_container(m) >= 0);
+ assert_se(sd_netlink_message_close_container(m) == -EINVAL);
+
+ assert_se(sd_netlink_message_rewind(m) >= 0);
+
+ assert_se(sd_netlink_message_enter_container(m, IFLA_LINKINFO) >= 0);
+ assert_se(sd_netlink_message_read_string(m, IFLA_INFO_KIND, &string_data) >= 0);
+ assert_se(streq("vlan", string_data));
+
+ assert_se(sd_netlink_message_enter_container(m, IFLA_INFO_DATA) >= 0);
+ assert_se(sd_netlink_message_read_u16(m, IFLA_VLAN_ID, &u16_data) >= 0);
+ assert_se(sd_netlink_message_exit_container(m) >= 0);
+
+ assert_se(sd_netlink_message_read_string(m, IFLA_INFO_KIND, &string_data) >= 0);
+ assert_se(streq("vlan", string_data));
+ assert_se(sd_netlink_message_exit_container(m) >= 0);
+
+ assert_se(sd_netlink_message_read_u32(m, IFLA_LINKINFO, &u32_data) < 0);
+
+ assert_se(sd_netlink_message_exit_container(m) == -EINVAL);
+}
+
+static void test_match(void) {
+ _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
+
+ assert_se(sd_netlink_open(&rtnl) >= 0);
+
+ assert_se(sd_netlink_add_match(rtnl, RTM_NEWLINK, link_handler, NULL) >= 0);
+ assert_se(sd_netlink_add_match(rtnl, RTM_NEWLINK, link_handler, NULL) >= 0);
+
+ assert_se(sd_netlink_remove_match(rtnl, RTM_NEWLINK, link_handler, NULL) == 1);
+ assert_se(sd_netlink_remove_match(rtnl, RTM_NEWLINK, link_handler, NULL) == 1);
+ assert_se(sd_netlink_remove_match(rtnl, RTM_NEWLINK, link_handler, NULL) == 0);
+
+ assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL);
+}
+
+static void test_get_addresses(sd_netlink *rtnl) {
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL;
+ sd_netlink_message *m;
+
+ assert_se(sd_rtnl_message_new_addr(rtnl, &req, RTM_GETADDR, 0, AF_UNSPEC) >= 0);
+
+ assert_se(sd_netlink_call(rtnl, req, 0, &reply) >= 0);
+
+ for (m = reply; m; m = sd_netlink_message_next(m)) {
+ uint16_t type;
+ unsigned char scope, flags;
+ int family, ifindex;
+
+ assert_se(sd_netlink_message_get_type(m, &type) >= 0);
+ assert_se(type == RTM_NEWADDR);
+
+ assert_se(sd_rtnl_message_addr_get_ifindex(m, &ifindex) >= 0);
+ assert_se(sd_rtnl_message_addr_get_family(m, &family) >= 0);
+ assert_se(sd_rtnl_message_addr_get_scope(m, &scope) >= 0);
+ assert_se(sd_rtnl_message_addr_get_flags(m, &flags) >= 0);
+
+ assert_se(ifindex > 0);
+ assert_se(family == AF_INET || family == AF_INET6);
+
+ log_info("got IPv%u address on ifindex %i", family == AF_INET ? 4: 6, ifindex);
+ }
+}
+
+static void test_message(void) {
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
+
+ assert_se(rtnl_message_new_synthetic_error(-ETIMEDOUT, 1, &m) >= 0);
+ assert_se(sd_netlink_message_get_errno(m) == -ETIMEDOUT);
+}
+
+int main(void) {
+ sd_netlink *rtnl;
+ sd_netlink_message *m;
+ sd_netlink_message *r;
+ const char *string_data;
+ int if_loopback;
+ uint16_t type;
+
+ test_message();
+
+ test_match();
+
+ test_multiple();
+
+ test_route();
+
+ test_container();
+
+ assert_se(sd_netlink_open(&rtnl) >= 0);
+ assert_se(rtnl);
+
+ if_loopback = (int) if_nametoindex("lo");
+ assert_se(if_loopback > 0);
+
+ test_async(if_loopback);
+
+ test_pipe(if_loopback);
+
+ test_event_loop(if_loopback);
+
+ test_link_configure(rtnl, if_loopback);
+
+ test_get_addresses(rtnl);
+
+ test_message_link_bridge(rtnl);
+
+ assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, if_loopback) >= 0);
+ assert_se(m);
+
+ assert_se(sd_netlink_message_get_type(m, &type) >= 0);
+ assert_se(type == RTM_GETLINK);
+
+ assert_se(sd_netlink_message_read_string(m, IFLA_IFNAME, &string_data) == -EPERM);
+
+ assert_se(sd_netlink_call(rtnl, m, 0, &r) == 1);
+ assert_se(sd_netlink_message_get_type(r, &type) >= 0);
+ assert_se(type == RTM_NEWLINK);
+
+ assert_se((r = sd_netlink_message_unref(r)) == NULL);
+
+ assert_se(sd_netlink_call(rtnl, m, -1, &r) == -EPERM);
+ assert_se((m = sd_netlink_message_unref(m)) == NULL);
+ assert_se((r = sd_netlink_message_unref(r)) == NULL);
+
+ test_link_get(rtnl, if_loopback);
+ test_address_get(rtnl, if_loopback);
+
+ assert_se((m = sd_netlink_message_unref(m)) == NULL);
+ assert_se((r = sd_netlink_message_unref(r)) == NULL);
+ assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL);
+
+ return EXIT_SUCCESS;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-network/network-util.c b/src/libsystemd/libsystemd-internal/sd-network/network-util.c
new file mode 100644
index 0000000000..a0d9b5f1a4
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-network/network-util.c
@@ -0,0 +1,37 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2014 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "alloc-util.h"
+#include "fd-util.h"
+#include "network-util.h"
+#include "strv.h"
+
+bool network_is_online(void) {
+ _cleanup_free_ char *state = NULL;
+ int r;
+
+ r = sd_network_get_operational_state(&state);
+ if (r < 0) /* if we don't know anything, we consider the system online */
+ return true;
+
+ if (STR_IN_SET(state, "routable", "degraded"))
+ return true;
+
+ return false;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-network/network-util.h b/src/libsystemd/libsystemd-internal/sd-network/network-util.h
new file mode 100644
index 0000000000..8c4dbc68b1
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-network/network-util.h
@@ -0,0 +1,24 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2014 Thomas Hindø Paabøl Andersen
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <systemd/sd-network.h>
+
+bool network_is_online(void);
diff --git a/src/libsystemd/libsystemd-internal/sd-network/sd-network.c b/src/libsystemd/libsystemd-internal/sd-network/sd-network.c
new file mode 100644
index 0000000000..70083213f9
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-network/sd-network.c
@@ -0,0 +1,400 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2011 Lennart Poettering
+ Copyright 2014 Tom Gundersen
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <errno.h>
+#include <poll.h>
+#include <string.h>
+#include <sys/inotify.h>
+
+#include <systemd/sd-network.h>
+
+#include "alloc-util.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "fs-util.h"
+#include "macro.h"
+#include "parse-util.h"
+#include "stdio-util.h"
+#include "string-util.h"
+#include "strv.h"
+#include "util.h"
+
+_public_ int sd_network_get_operational_state(char **state) {
+ _cleanup_free_ char *s = NULL;
+ int r;
+
+ assert_return(state, -EINVAL);
+
+ r = parse_env_file("/run/systemd/netif/state", NEWLINE, "OPER_STATE", &s, NULL);
+ if (r == -ENOENT)
+ return -ENODATA;
+ if (r < 0)
+ return r;
+ if (isempty(s))
+ return -ENODATA;
+
+ *state = s;
+ s = NULL;
+
+ return 0;
+}
+
+static int network_get_strv(const char *key, char ***ret) {
+ _cleanup_strv_free_ char **a = NULL;
+ _cleanup_free_ char *s = NULL;
+ int r;
+
+ assert_return(ret, -EINVAL);
+
+ r = parse_env_file("/run/systemd/netif/state", NEWLINE, key, &s, NULL);
+ if (r == -ENOENT)
+ return -ENODATA;
+ if (r < 0)
+ return r;
+ if (isempty(s)) {
+ *ret = NULL;
+ return 0;
+ }
+
+ a = strv_split(s, " ");
+ if (!a)
+ return -ENOMEM;
+
+ strv_uniq(a);
+ r = strv_length(a);
+
+ *ret = a;
+ a = NULL;
+
+ return r;
+}
+
+_public_ int sd_network_get_dns(char ***ret) {
+ return network_get_strv("DNS", ret);
+}
+
+_public_ int sd_network_get_ntp(char ***ret) {
+ return network_get_strv("NTP", ret);
+}
+
+_public_ int sd_network_get_search_domains(char ***ret) {
+ return network_get_strv("DOMAINS", ret);
+}
+
+_public_ int sd_network_get_route_domains(char ***ret) {
+ return network_get_strv("ROUTE_DOMAINS", ret);
+}
+
+static int network_link_get_string(int ifindex, const char *field, char **ret) {
+ char path[strlen("/run/systemd/netif/links/") + DECIMAL_STR_MAX(ifindex) + 1];
+ _cleanup_free_ char *s = NULL;
+ int r;
+
+ assert_return(ifindex > 0, -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ xsprintf(path, "/run/systemd/netif/links/%i", ifindex);
+
+ r = parse_env_file(path, NEWLINE, field, &s, NULL);
+ if (r == -ENOENT)
+ return -ENODATA;
+ if (r < 0)
+ return r;
+ if (isempty(s))
+ return -ENODATA;
+
+ *ret = s;
+ s = NULL;
+
+ return 0;
+}
+
+static int network_link_get_strv(int ifindex, const char *key, char ***ret) {
+ char path[strlen("/run/systemd/netif/links/") + DECIMAL_STR_MAX(ifindex) + 1];
+ _cleanup_strv_free_ char **a = NULL;
+ _cleanup_free_ char *s = NULL;
+ int r;
+
+ assert_return(ifindex > 0, -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ xsprintf(path, "/run/systemd/netif/links/%i", ifindex);
+ r = parse_env_file(path, NEWLINE, key, &s, NULL);
+ if (r == -ENOENT)
+ return -ENODATA;
+ if (r < 0)
+ return r;
+ if (isempty(s)) {
+ *ret = NULL;
+ return 0;
+ }
+
+ a = strv_split(s, " ");
+ if (!a)
+ return -ENOMEM;
+
+ strv_uniq(a);
+ r = strv_length(a);
+
+ *ret = a;
+ a = NULL;
+
+ return r;
+}
+
+_public_ int sd_network_link_get_setup_state(int ifindex, char **state) {
+ return network_link_get_string(ifindex, "ADMIN_STATE", state);
+}
+
+_public_ int sd_network_link_get_network_file(int ifindex, char **filename) {
+ return network_link_get_string(ifindex, "NETWORK_FILE", filename);
+}
+
+_public_ int sd_network_link_get_operational_state(int ifindex, char **state) {
+ return network_link_get_string(ifindex, "OPER_STATE", state);
+}
+
+_public_ int sd_network_link_get_llmnr(int ifindex, char **llmnr) {
+ return network_link_get_string(ifindex, "LLMNR", llmnr);
+}
+
+_public_ int sd_network_link_get_mdns(int ifindex, char **mdns) {
+ return network_link_get_string(ifindex, "MDNS", mdns);
+}
+
+_public_ int sd_network_link_get_dnssec(int ifindex, char **dnssec) {
+ return network_link_get_string(ifindex, "DNSSEC", dnssec);
+}
+
+_public_ int sd_network_link_get_dnssec_negative_trust_anchors(int ifindex, char ***nta) {
+ return network_link_get_strv(ifindex, "DNSSEC_NTA", nta);
+}
+
+_public_ int sd_network_link_get_timezone(int ifindex, char **ret) {
+ return network_link_get_string(ifindex, "TIMEZONE", ret);
+}
+
+_public_ int sd_network_link_get_dns(int ifindex, char ***ret) {
+ return network_link_get_strv(ifindex, "DNS", ret);
+}
+
+_public_ int sd_network_link_get_ntp(int ifindex, char ***ret) {
+ return network_link_get_strv(ifindex, "NTP", ret);
+}
+
+_public_ int sd_network_link_get_search_domains(int ifindex, char ***ret) {
+ return network_link_get_strv(ifindex, "DOMAINS", ret);
+}
+
+_public_ int sd_network_link_get_route_domains(int ifindex, char ***ret) {
+ return network_link_get_strv(ifindex, "ROUTE_DOMAINS", ret);
+}
+
+static int network_link_get_ifindexes(int ifindex, const char *key, int **ret) {
+ char path[strlen("/run/systemd/netif/links/") + DECIMAL_STR_MAX(ifindex) + 1];
+ _cleanup_free_ int *ifis = NULL;
+ _cleanup_free_ char *s = NULL;
+ size_t allocated = 0, c = 0;
+ const char *x;
+ int r;
+
+ assert_return(ifindex > 0, -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ xsprintf(path, "/run/systemd/netif/links/%i", ifindex);
+ r = parse_env_file(path, NEWLINE, key, &s, NULL);
+ if (r == -ENOENT)
+ return -ENODATA;
+ if (r < 0)
+ return r;
+ if (isempty(s)) {
+ *ret = NULL;
+ return 0;
+ }
+
+ x = s;
+ for (;;) {
+ _cleanup_free_ char *word = NULL;
+
+ r = extract_first_word(&x, &word, NULL, 0);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ break;
+
+ r = parse_ifindex(word, &ifindex);
+ if (r < 0)
+ return r;
+
+ if (!GREEDY_REALLOC(ifis, allocated, c + 1))
+ return -ENOMEM;
+
+ ifis[c++] = ifindex;
+ }
+
+ if (!GREEDY_REALLOC(ifis, allocated, c + 1))
+ return -ENOMEM;
+ ifis[c] = 0; /* Let's add a 0 ifindex to the end, to be nice*/
+
+ *ret = ifis;
+ ifis = NULL;
+
+ return c;
+}
+
+_public_ int sd_network_link_get_carrier_bound_to(int ifindex, int **ret) {
+ return network_link_get_ifindexes(ifindex, "CARRIER_BOUND_TO", ret);
+}
+
+_public_ int sd_network_link_get_carrier_bound_by(int ifindex, int **ret) {
+ return network_link_get_ifindexes(ifindex, "CARRIER_BOUND_BY", ret);
+}
+
+static inline int MONITOR_TO_FD(sd_network_monitor *m) {
+ return (int) (unsigned long) m - 1;
+}
+
+static inline sd_network_monitor* FD_TO_MONITOR(int fd) {
+ return (sd_network_monitor*) (unsigned long) (fd + 1);
+}
+
+static int monitor_add_inotify_watch(int fd) {
+ int k;
+
+ k = inotify_add_watch(fd, "/run/systemd/netif/links/", IN_MOVED_TO|IN_DELETE);
+ if (k >= 0)
+ return 0;
+ else if (errno != ENOENT)
+ return -errno;
+
+ k = inotify_add_watch(fd, "/run/systemd/netif/", IN_CREATE|IN_ISDIR);
+ if (k >= 0)
+ return 0;
+ else if (errno != ENOENT)
+ return -errno;
+
+ k = inotify_add_watch(fd, "/run/systemd/", IN_CREATE|IN_ISDIR);
+ if (k < 0)
+ return -errno;
+
+ return 0;
+}
+
+_public_ int sd_network_monitor_new(sd_network_monitor **m, const char *category) {
+ _cleanup_close_ int fd = -1;
+ int k;
+ bool good = false;
+
+ assert_return(m, -EINVAL);
+
+ fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC);
+ if (fd < 0)
+ return -errno;
+
+ if (!category || streq(category, "links")) {
+ k = monitor_add_inotify_watch(fd);
+ if (k < 0)
+ return k;
+
+ good = true;
+ }
+
+ if (!good)
+ return -EINVAL;
+
+ *m = FD_TO_MONITOR(fd);
+ fd = -1;
+
+ return 0;
+}
+
+_public_ sd_network_monitor* sd_network_monitor_unref(sd_network_monitor *m) {
+ int fd;
+
+ if (m) {
+ fd = MONITOR_TO_FD(m);
+ close_nointr(fd);
+ }
+
+ return NULL;
+}
+
+_public_ int sd_network_monitor_flush(sd_network_monitor *m) {
+ union inotify_event_buffer buffer;
+ struct inotify_event *e;
+ ssize_t l;
+ int fd, k;
+
+ assert_return(m, -EINVAL);
+
+ fd = MONITOR_TO_FD(m);
+
+ l = read(fd, &buffer, sizeof(buffer));
+ if (l < 0) {
+ if (errno == EAGAIN || errno == EINTR)
+ return 0;
+
+ return -errno;
+ }
+
+ FOREACH_INOTIFY_EVENT(e, buffer, l) {
+ if (e->mask & IN_ISDIR) {
+ k = monitor_add_inotify_watch(fd);
+ if (k < 0)
+ return k;
+
+ k = inotify_rm_watch(fd, e->wd);
+ if (k < 0)
+ return -errno;
+ }
+ }
+
+ return 0;
+}
+
+_public_ int sd_network_monitor_get_fd(sd_network_monitor *m) {
+
+ assert_return(m, -EINVAL);
+
+ return MONITOR_TO_FD(m);
+}
+
+_public_ int sd_network_monitor_get_events(sd_network_monitor *m) {
+
+ assert_return(m, -EINVAL);
+
+ /* For now we will only return POLLIN here, since we don't
+ * need anything else ever for inotify. However, let's have
+ * this API to keep our options open should we later on need
+ * it. */
+ return POLLIN;
+}
+
+_public_ int sd_network_monitor_get_timeout(sd_network_monitor *m, uint64_t *timeout_usec) {
+
+ assert_return(m, -EINVAL);
+ assert_return(timeout_usec, -EINVAL);
+
+ /* For now we will only return (uint64_t) -1, since we don't
+ * need any timeout. However, let's have this API to keep our
+ * options open should we later on need it. */
+ *timeout_usec = (uint64_t) -1;
+ return 0;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-path/sd-path.c b/src/libsystemd/libsystemd-internal/sd-path/sd-path.c
new file mode 100644
index 0000000000..6d9f3e2a61
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-path/sd-path.c
@@ -0,0 +1,638 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2014 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <systemd/sd-path.h>
+
+#include "alloc-util.h"
+#include "architecture.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "missing.h"
+#include "path-util.h"
+#include "string-util.h"
+#include "strv.h"
+#include "user-util.h"
+#include "util.h"
+
+static int from_environment(const char *envname, const char *fallback, const char **ret) {
+ assert(ret);
+
+ if (envname) {
+ const char *e;
+
+ e = secure_getenv(envname);
+ if (e && path_is_absolute(e)) {
+ *ret = e;
+ return 0;
+ }
+ }
+
+ if (fallback) {
+ *ret = fallback;
+ return 0;
+ }
+
+ return -ENXIO;
+}
+
+static int from_home_dir(const char *envname, const char *suffix, char **buffer, const char **ret) {
+ _cleanup_free_ char *h = NULL;
+ char *cc = NULL;
+ int r;
+
+ assert(suffix);
+ assert(buffer);
+ assert(ret);
+
+ if (envname) {
+ const char *e = NULL;
+
+ e = secure_getenv(envname);
+ if (e && path_is_absolute(e)) {
+ *ret = e;
+ return 0;
+ }
+ }
+
+ r = get_home_dir(&h);
+ if (r < 0)
+ return r;
+
+ if (endswith(h, "/"))
+ cc = strappend(h, suffix);
+ else
+ cc = strjoin(h, "/", suffix, NULL);
+ if (!cc)
+ return -ENOMEM;
+
+ *buffer = cc;
+ *ret = cc;
+ return 0;
+}
+
+static int from_user_dir(const char *field, char **buffer, const char **ret) {
+ _cleanup_fclose_ FILE *f = NULL;
+ _cleanup_free_ char *b = NULL;
+ _cleanup_free_ const char *fn = NULL;
+ const char *c = NULL;
+ char line[LINE_MAX];
+ size_t n;
+ int r;
+
+ assert(field);
+ assert(buffer);
+ assert(ret);
+
+ r = from_home_dir("XDG_CONFIG_HOME", ".config", &b, &c);
+ if (r < 0)
+ return r;
+
+ fn = strappend(c, "/user-dirs.dirs");
+ if (!fn)
+ return -ENOMEM;
+
+ f = fopen(fn, "re");
+ if (!f) {
+ if (errno == ENOENT)
+ goto fallback;
+
+ return -errno;
+ }
+
+ /* This is an awful parse, but it follows closely what
+ * xdg-user-dirs does upstream */
+
+ n = strlen(field);
+ FOREACH_LINE(line, f, return -errno) {
+ char *l, *p, *e;
+
+ l = strstrip(line);
+
+ if (!strneq(l, field, n))
+ continue;
+
+ p = l + n;
+ p += strspn(p, WHITESPACE);
+
+ if (*p != '=')
+ continue;
+ p++;
+
+ p += strspn(p, WHITESPACE);
+
+ if (*p != '"')
+ continue;
+ p++;
+
+ e = strrchr(p, '"');
+ if (!e)
+ continue;
+ *e = 0;
+
+ /* Three syntaxes permitted: relative to $HOME, $HOME itself, and absolute path */
+ if (startswith(p, "$HOME/")) {
+ _cleanup_free_ char *h = NULL;
+ char *cc;
+
+ r = get_home_dir(&h);
+ if (r < 0)
+ return r;
+
+ cc = strappend(h, p+5);
+ if (!cc)
+ return -ENOMEM;
+
+ *buffer = cc;
+ *ret = cc;
+ return 0;
+ } else if (streq(p, "$HOME")) {
+
+ r = get_home_dir(buffer);
+ if (r < 0)
+ return r;
+
+ *ret = *buffer;
+ return 0;
+ } else if (path_is_absolute(p)) {
+ char *copy;
+
+ copy = strdup(p);
+ if (!copy)
+ return -ENOMEM;
+
+ *buffer = copy;
+ *ret = copy;
+ return 0;
+ }
+ }
+
+fallback:
+ /* The desktop directory defaults to $HOME/Desktop, the others to $HOME */
+ if (streq(field, "XDG_DESKTOP_DIR")) {
+ _cleanup_free_ char *h = NULL;
+ char *cc;
+
+ r = get_home_dir(&h);
+ if (r < 0)
+ return r;
+
+ cc = strappend(h, "/Desktop");
+ if (!cc)
+ return -ENOMEM;
+
+ *buffer = cc;
+ *ret = cc;
+ } else {
+
+ r = get_home_dir(buffer);
+ if (r < 0)
+ return r;
+
+ *ret = *buffer;
+ }
+
+ return 0;
+}
+
+static int get_path(uint64_t type, char **buffer, const char **ret) {
+ int r;
+
+ assert(buffer);
+ assert(ret);
+
+ switch (type) {
+
+ case SD_PATH_TEMPORARY:
+ return from_environment("TMPDIR", "/tmp", ret);
+
+ case SD_PATH_TEMPORARY_LARGE:
+ return from_environment("TMPDIR", "/var/tmp", ret);
+
+ case SD_PATH_SYSTEM_BINARIES:
+ *ret = "/usr/bin";
+ return 0;
+
+ case SD_PATH_SYSTEM_INCLUDE:
+ *ret = "/usr/include";
+ return 0;
+
+ case SD_PATH_SYSTEM_LIBRARY_PRIVATE:
+ *ret = "/usr/lib";
+ return 0;
+
+ case SD_PATH_SYSTEM_LIBRARY_ARCH:
+ *ret = LIBDIR;
+ return 0;
+
+ case SD_PATH_SYSTEM_SHARED:
+ *ret = "/usr/share";
+ return 0;
+
+ case SD_PATH_SYSTEM_CONFIGURATION_FACTORY:
+ *ret = "/usr/share/factory/etc";
+ return 0;
+
+ case SD_PATH_SYSTEM_STATE_FACTORY:
+ *ret = "/usr/share/factory/var";
+ return 0;
+
+ case SD_PATH_SYSTEM_CONFIGURATION:
+ *ret = "/etc";
+ return 0;
+
+ case SD_PATH_SYSTEM_RUNTIME:
+ *ret = "/run";
+ return 0;
+
+ case SD_PATH_SYSTEM_RUNTIME_LOGS:
+ *ret = "/run/log";
+ return 0;
+
+ case SD_PATH_SYSTEM_STATE_PRIVATE:
+ *ret = "/var/lib";
+ return 0;
+
+ case SD_PATH_SYSTEM_STATE_LOGS:
+ *ret = "/var/log";
+ return 0;
+
+ case SD_PATH_SYSTEM_STATE_CACHE:
+ *ret = "/var/cache";
+ return 0;
+
+ case SD_PATH_SYSTEM_STATE_SPOOL:
+ *ret = "/var/spool";
+ return 0;
+
+ case SD_PATH_USER_BINARIES:
+ return from_home_dir(NULL, ".local/bin", buffer, ret);
+
+ case SD_PATH_USER_LIBRARY_PRIVATE:
+ return from_home_dir(NULL, ".local/lib", buffer, ret);
+
+ case SD_PATH_USER_LIBRARY_ARCH:
+ return from_home_dir(NULL, ".local/lib/" LIB_ARCH_TUPLE, buffer, ret);
+
+ case SD_PATH_USER_SHARED:
+ return from_home_dir("XDG_DATA_HOME", ".local/share", buffer, ret);
+
+ case SD_PATH_USER_CONFIGURATION:
+ return from_home_dir("XDG_CONFIG_HOME", ".config", buffer, ret);
+
+ case SD_PATH_USER_RUNTIME:
+ return from_environment("XDG_RUNTIME_DIR", NULL, ret);
+
+ case SD_PATH_USER_STATE_CACHE:
+ return from_home_dir("XDG_CACHE_HOME", ".cache", buffer, ret);
+
+ case SD_PATH_USER:
+ r = get_home_dir(buffer);
+ if (r < 0)
+ return r;
+
+ *ret = *buffer;
+ return 0;
+
+ case SD_PATH_USER_DOCUMENTS:
+ return from_user_dir("XDG_DOCUMENTS_DIR", buffer, ret);
+
+ case SD_PATH_USER_MUSIC:
+ return from_user_dir("XDG_MUSIC_DIR", buffer, ret);
+
+ case SD_PATH_USER_PICTURES:
+ return from_user_dir("XDG_PICTURES_DIR", buffer, ret);
+
+ case SD_PATH_USER_VIDEOS:
+ return from_user_dir("XDG_VIDEOS_DIR", buffer, ret);
+
+ case SD_PATH_USER_DOWNLOAD:
+ return from_user_dir("XDG_DOWNLOAD_DIR", buffer, ret);
+
+ case SD_PATH_USER_PUBLIC:
+ return from_user_dir("XDG_PUBLICSHARE_DIR", buffer, ret);
+
+ case SD_PATH_USER_TEMPLATES:
+ return from_user_dir("XDG_TEMPLATES_DIR", buffer, ret);
+
+ case SD_PATH_USER_DESKTOP:
+ return from_user_dir("XDG_DESKTOP_DIR", buffer, ret);
+ }
+
+ return -EOPNOTSUPP;
+}
+
+_public_ int sd_path_home(uint64_t type, const char *suffix, char **path) {
+ char *buffer = NULL, *cc;
+ const char *ret;
+ int r;
+
+ assert_return(path, -EINVAL);
+
+ if (IN_SET(type,
+ SD_PATH_SEARCH_BINARIES,
+ SD_PATH_SEARCH_LIBRARY_PRIVATE,
+ SD_PATH_SEARCH_LIBRARY_ARCH,
+ SD_PATH_SEARCH_SHARED,
+ SD_PATH_SEARCH_CONFIGURATION_FACTORY,
+ SD_PATH_SEARCH_STATE_FACTORY,
+ SD_PATH_SEARCH_CONFIGURATION)) {
+
+ _cleanup_strv_free_ char **l = NULL;
+
+ r = sd_path_search(type, suffix, &l);
+ if (r < 0)
+ return r;
+
+ buffer = strv_join(l, ":");
+ if (!buffer)
+ return -ENOMEM;
+
+ *path = buffer;
+ return 0;
+ }
+
+ r = get_path(type, &buffer, &ret);
+ if (r < 0)
+ return r;
+
+ if (!suffix) {
+ if (!buffer) {
+ buffer = strdup(ret);
+ if (!buffer)
+ return -ENOMEM;
+ }
+
+ *path = buffer;
+ return 0;
+ }
+
+ suffix += strspn(suffix, "/");
+
+ if (endswith(ret, "/"))
+ cc = strappend(ret, suffix);
+ else
+ cc = strjoin(ret, "/", suffix, NULL);
+
+ free(buffer);
+
+ if (!cc)
+ return -ENOMEM;
+
+ *path = cc;
+ return 0;
+}
+
+static int search_from_environment(
+ char ***list,
+ const char *env_home,
+ const char *home_suffix,
+ const char *env_search,
+ bool env_search_sufficient,
+ const char *first, ...) {
+
+ const char *e;
+ char *h = NULL;
+ char **l = NULL;
+ int r;
+
+ assert(list);
+
+ if (env_search) {
+ e = secure_getenv(env_search);
+ if (e) {
+ l = strv_split(e, ":");
+ if (!l)
+ return -ENOMEM;
+
+ if (env_search_sufficient) {
+ *list = l;
+ return 0;
+ }
+ }
+ }
+
+ if (!l && first) {
+ va_list ap;
+
+ va_start(ap, first);
+ l = strv_new_ap(first, ap);
+ va_end(ap);
+
+ if (!l)
+ return -ENOMEM;
+ }
+
+ if (env_home) {
+ e = secure_getenv(env_home);
+ if (e && path_is_absolute(e)) {
+ h = strdup(e);
+ if (!h) {
+ strv_free(l);
+ return -ENOMEM;
+ }
+ }
+ }
+
+ if (!h && home_suffix) {
+ e = secure_getenv("HOME");
+ if (e && path_is_absolute(e)) {
+ if (endswith(e, "/"))
+ h = strappend(e, home_suffix);
+ else
+ h = strjoin(e, "/", home_suffix, NULL);
+
+ if (!h) {
+ strv_free(l);
+ return -ENOMEM;
+ }
+ }
+ }
+
+ if (h) {
+ r = strv_consume_prepend(&l, h);
+ if (r < 0) {
+ strv_free(l);
+ return -ENOMEM;
+ }
+ }
+
+ *list = l;
+ return 0;
+}
+
+static int get_search(uint64_t type, char ***list) {
+
+ assert(list);
+
+ switch(type) {
+
+ case SD_PATH_SEARCH_BINARIES:
+ return search_from_environment(list,
+ NULL,
+ ".local/bin",
+ "PATH",
+ true,
+ "/usr/local/sbin",
+ "/usr/local/bin",
+ "/usr/sbin",
+ "/usr/bin",
+#ifdef HAVE_SPLIT_USR
+ "/sbin",
+ "/bin",
+#endif
+ NULL);
+
+ case SD_PATH_SEARCH_LIBRARY_PRIVATE:
+ return search_from_environment(list,
+ NULL,
+ ".local/lib",
+ NULL,
+ false,
+ "/usr/local/lib",
+ "/usr/lib",
+#ifdef HAVE_SPLIT_USR
+ "/lib",
+#endif
+ NULL);
+
+ case SD_PATH_SEARCH_LIBRARY_ARCH:
+ return search_from_environment(list,
+ NULL,
+ ".local/lib/" LIB_ARCH_TUPLE,
+ "LD_LIBRARY_PATH",
+ true,
+ LIBDIR,
+#ifdef HAVE_SPLIT_USR
+ ROOTLIBDIR,
+#endif
+ NULL);
+
+ case SD_PATH_SEARCH_SHARED:
+ return search_from_environment(list,
+ "XDG_DATA_HOME",
+ ".local/share",
+ "XDG_DATA_DIRS",
+ false,
+ "/usr/local/share",
+ "/usr/share",
+ NULL);
+
+ case SD_PATH_SEARCH_CONFIGURATION_FACTORY:
+ return search_from_environment(list,
+ NULL,
+ NULL,
+ NULL,
+ false,
+ "/usr/local/share/factory/etc",
+ "/usr/share/factory/etc",
+ NULL);
+
+ case SD_PATH_SEARCH_STATE_FACTORY:
+ return search_from_environment(list,
+ NULL,
+ NULL,
+ NULL,
+ false,
+ "/usr/local/share/factory/var",
+ "/usr/share/factory/var",
+ NULL);
+
+ case SD_PATH_SEARCH_CONFIGURATION:
+ return search_from_environment(list,
+ "XDG_CONFIG_HOME",
+ ".config",
+ "XDG_CONFIG_DIRS",
+ false,
+ "/etc",
+ NULL);
+ }
+
+ return -EOPNOTSUPP;
+}
+
+_public_ int sd_path_search(uint64_t type, const char *suffix, char ***paths) {
+ char **l, **i, **j, **n;
+ int r;
+
+ assert_return(paths, -EINVAL);
+
+ if (!IN_SET(type,
+ SD_PATH_SEARCH_BINARIES,
+ SD_PATH_SEARCH_LIBRARY_PRIVATE,
+ SD_PATH_SEARCH_LIBRARY_ARCH,
+ SD_PATH_SEARCH_SHARED,
+ SD_PATH_SEARCH_CONFIGURATION_FACTORY,
+ SD_PATH_SEARCH_STATE_FACTORY,
+ SD_PATH_SEARCH_CONFIGURATION)) {
+
+ char *p;
+
+ r = sd_path_home(type, suffix, &p);
+ if (r < 0)
+ return r;
+
+ l = new(char*, 2);
+ if (!l) {
+ free(p);
+ return -ENOMEM;
+ }
+
+ l[0] = p;
+ l[1] = NULL;
+
+ *paths = l;
+ return 0;
+ }
+
+ r = get_search(type, &l);
+ if (r < 0)
+ return r;
+
+ if (!suffix) {
+ *paths = l;
+ return 0;
+ }
+
+ n = new(char*, strv_length(l)+1);
+ if (!n) {
+ strv_free(l);
+ return -ENOMEM;
+ }
+
+ j = n;
+ STRV_FOREACH(i, l) {
+
+ if (endswith(*i, "/"))
+ *j = strappend(*i, suffix);
+ else
+ *j = strjoin(*i, "/", suffix, NULL);
+
+ if (!*j) {
+ strv_free(l);
+ strv_free(n);
+ return -ENOMEM;
+ }
+
+ j++;
+ }
+
+ *j = NULL;
+ *paths = n;
+ return 0;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-resolve/sd-resolve.c b/src/libsystemd/libsystemd-internal/sd-resolve/sd-resolve.c
new file mode 100644
index 0000000000..6eacf2b69a
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-resolve/sd-resolve.c
@@ -0,0 +1,1245 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2005-2008 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <errno.h>
+#include <poll.h>
+#include <pthread.h>
+#include <resolv.h>
+#include <signal.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/prctl.h>
+#include <unistd.h>
+
+#include <systemd/sd-resolve.h>
+
+#include "alloc-util.h"
+#include "fd-util.h"
+#include "io-util.h"
+#include "list.h"
+#include "missing.h"
+#include "socket-util.h"
+#include "util.h"
+
+#define WORKERS_MIN 1U
+#define WORKERS_MAX 16U
+#define QUERIES_MAX 256U
+#define BUFSIZE 10240U
+
+typedef enum {
+ REQUEST_ADDRINFO,
+ RESPONSE_ADDRINFO,
+ REQUEST_NAMEINFO,
+ RESPONSE_NAMEINFO,
+ REQUEST_TERMINATE,
+ RESPONSE_DIED
+} QueryType;
+
+enum {
+ REQUEST_RECV_FD,
+ REQUEST_SEND_FD,
+ RESPONSE_RECV_FD,
+ RESPONSE_SEND_FD,
+ _FD_MAX
+};
+
+struct sd_resolve {
+ unsigned n_ref;
+
+ bool dead:1;
+ pid_t original_pid;
+
+ int fds[_FD_MAX];
+
+ pthread_t workers[WORKERS_MAX];
+ unsigned n_valid_workers;
+
+ unsigned current_id;
+ sd_resolve_query* query_array[QUERIES_MAX];
+ unsigned n_queries, n_done, n_outstanding;
+
+ sd_event_source *event_source;
+ sd_event *event;
+
+ sd_resolve_query *current;
+
+ sd_resolve **default_resolve_ptr;
+ pid_t tid;
+
+ LIST_HEAD(sd_resolve_query, queries);
+};
+
+struct sd_resolve_query {
+ unsigned n_ref;
+
+ sd_resolve *resolve;
+
+ QueryType type:4;
+ bool done:1;
+ bool floating:1;
+ unsigned id;
+
+ int ret;
+ int _errno;
+ int _h_errno;
+ struct addrinfo *addrinfo;
+ char *serv, *host;
+
+ union {
+ sd_resolve_getaddrinfo_handler_t getaddrinfo_handler;
+ sd_resolve_getnameinfo_handler_t getnameinfo_handler;
+ };
+
+ void *userdata;
+
+ LIST_FIELDS(sd_resolve_query, queries);
+};
+
+typedef struct RHeader {
+ QueryType type;
+ unsigned id;
+ size_t length;
+} RHeader;
+
+typedef struct AddrInfoRequest {
+ struct RHeader header;
+ bool hints_valid;
+ int ai_flags;
+ int ai_family;
+ int ai_socktype;
+ int ai_protocol;
+ size_t node_len, service_len;
+} AddrInfoRequest;
+
+typedef struct AddrInfoResponse {
+ struct RHeader header;
+ int ret;
+ int _errno;
+ int _h_errno;
+ /* followed by addrinfo_serialization[] */
+} AddrInfoResponse;
+
+typedef struct AddrInfoSerialization {
+ int ai_flags;
+ int ai_family;
+ int ai_socktype;
+ int ai_protocol;
+ size_t ai_addrlen;
+ size_t canonname_len;
+ /* Followed by ai_addr amd ai_canonname with variable lengths */
+} AddrInfoSerialization;
+
+typedef struct NameInfoRequest {
+ struct RHeader header;
+ int flags;
+ socklen_t sockaddr_len;
+ bool gethost:1, getserv:1;
+} NameInfoRequest;
+
+typedef struct NameInfoResponse {
+ struct RHeader header;
+ size_t hostlen, servlen;
+ int ret;
+ int _errno;
+ int _h_errno;
+} NameInfoResponse;
+
+typedef union Packet {
+ RHeader rheader;
+ AddrInfoRequest addrinfo_request;
+ AddrInfoResponse addrinfo_response;
+ NameInfoRequest nameinfo_request;
+ NameInfoResponse nameinfo_response;
+} Packet;
+
+static int getaddrinfo_done(sd_resolve_query* q);
+static int getnameinfo_done(sd_resolve_query *q);
+
+static void resolve_query_disconnect(sd_resolve_query *q);
+
+#define RESOLVE_DONT_DESTROY(resolve) \
+ _cleanup_(sd_resolve_unrefp) _unused_ sd_resolve *_dont_destroy_##resolve = sd_resolve_ref(resolve)
+
+static int send_died(int out_fd) {
+
+ RHeader rh = {
+ .type = RESPONSE_DIED,
+ .length = sizeof(RHeader),
+ };
+
+ assert(out_fd >= 0);
+
+ if (send(out_fd, &rh, rh.length, MSG_NOSIGNAL) < 0)
+ return -errno;
+
+ return 0;
+}
+
+static void *serialize_addrinfo(void *p, const struct addrinfo *ai, size_t *length, size_t maxlength) {
+ AddrInfoSerialization s;
+ size_t cnl, l;
+
+ assert(p);
+ assert(ai);
+ assert(length);
+ assert(*length <= maxlength);
+
+ cnl = ai->ai_canonname ? strlen(ai->ai_canonname)+1 : 0;
+ l = sizeof(AddrInfoSerialization) + ai->ai_addrlen + cnl;
+
+ if (*length + l > maxlength)
+ return NULL;
+
+ s.ai_flags = ai->ai_flags;
+ s.ai_family = ai->ai_family;
+ s.ai_socktype = ai->ai_socktype;
+ s.ai_protocol = ai->ai_protocol;
+ s.ai_addrlen = ai->ai_addrlen;
+ s.canonname_len = cnl;
+
+ memcpy((uint8_t*) p, &s, sizeof(AddrInfoSerialization));
+ memcpy((uint8_t*) p + sizeof(AddrInfoSerialization), ai->ai_addr, ai->ai_addrlen);
+ memcpy_safe((char*) p + sizeof(AddrInfoSerialization) + ai->ai_addrlen,
+ ai->ai_canonname, cnl);
+
+ *length += l;
+ return (uint8_t*) p + l;
+}
+
+static int send_addrinfo_reply(
+ int out_fd,
+ unsigned id,
+ int ret,
+ struct addrinfo *ai,
+ int _errno,
+ int _h_errno) {
+
+ AddrInfoResponse resp = {
+ .header.type = RESPONSE_ADDRINFO,
+ .header.id = id,
+ .header.length = sizeof(AddrInfoResponse),
+ .ret = ret,
+ ._errno = _errno,
+ ._h_errno = _h_errno,
+ };
+
+ struct msghdr mh = {};
+ struct iovec iov[2];
+ union {
+ AddrInfoSerialization ais;
+ uint8_t space[BUFSIZE];
+ } buffer;
+
+ assert(out_fd >= 0);
+
+ if (ret == 0 && ai) {
+ void *p = &buffer;
+ struct addrinfo *k;
+
+ for (k = ai; k; k = k->ai_next) {
+ p = serialize_addrinfo(p, k, &resp.header.length, (uint8_t*) &buffer + BUFSIZE - (uint8_t*) p);
+ if (!p) {
+ freeaddrinfo(ai);
+ return -ENOBUFS;
+ }
+ }
+ }
+
+ if (ai)
+ freeaddrinfo(ai);
+
+ iov[0] = (struct iovec) { .iov_base = &resp, .iov_len = sizeof(AddrInfoResponse) };
+ iov[1] = (struct iovec) { .iov_base = &buffer, .iov_len = resp.header.length - sizeof(AddrInfoResponse) };
+
+ mh.msg_iov = iov;
+ mh.msg_iovlen = ELEMENTSOF(iov);
+
+ if (sendmsg(out_fd, &mh, MSG_NOSIGNAL) < 0)
+ return -errno;
+
+ return 0;
+}
+
+static int send_nameinfo_reply(
+ int out_fd,
+ unsigned id,
+ int ret,
+ const char *host,
+ const char *serv,
+ int _errno,
+ int _h_errno) {
+
+ NameInfoResponse resp = {
+ .header.type = RESPONSE_NAMEINFO,
+ .header.id = id,
+ .ret = ret,
+ ._errno = _errno,
+ ._h_errno = _h_errno,
+ };
+
+ struct msghdr mh = {};
+ struct iovec iov[3];
+ size_t hl, sl;
+
+ assert(out_fd >= 0);
+
+ sl = serv ? strlen(serv)+1 : 0;
+ hl = host ? strlen(host)+1 : 0;
+
+ resp.header.length = sizeof(NameInfoResponse) + hl + sl;
+ resp.hostlen = hl;
+ resp.servlen = sl;
+
+ iov[0] = (struct iovec) { .iov_base = &resp, .iov_len = sizeof(NameInfoResponse) };
+ iov[1] = (struct iovec) { .iov_base = (void*) host, .iov_len = hl };
+ iov[2] = (struct iovec) { .iov_base = (void*) serv, .iov_len = sl };
+
+ mh.msg_iov = iov;
+ mh.msg_iovlen = ELEMENTSOF(iov);
+
+ if (sendmsg(out_fd, &mh, MSG_NOSIGNAL) < 0)
+ return -errno;
+
+ return 0;
+}
+
+static int handle_request(int out_fd, const Packet *packet, size_t length) {
+ const RHeader *req;
+
+ assert(out_fd >= 0);
+ assert(packet);
+
+ req = &packet->rheader;
+
+ assert(length >= sizeof(RHeader));
+ assert(length == req->length);
+
+ switch (req->type) {
+
+ case REQUEST_ADDRINFO: {
+ const AddrInfoRequest *ai_req = &packet->addrinfo_request;
+ struct addrinfo hints = {}, *result = NULL;
+ const char *node, *service;
+ int ret;
+
+ assert(length >= sizeof(AddrInfoRequest));
+ assert(length == sizeof(AddrInfoRequest) + ai_req->node_len + ai_req->service_len);
+
+ hints.ai_flags = ai_req->ai_flags;
+ hints.ai_family = ai_req->ai_family;
+ hints.ai_socktype = ai_req->ai_socktype;
+ hints.ai_protocol = ai_req->ai_protocol;
+
+ node = ai_req->node_len ? (const char*) ai_req + sizeof(AddrInfoRequest) : NULL;
+ service = ai_req->service_len ? (const char*) ai_req + sizeof(AddrInfoRequest) + ai_req->node_len : NULL;
+
+ ret = getaddrinfo(
+ node, service,
+ ai_req->hints_valid ? &hints : NULL,
+ &result);
+
+ /* send_addrinfo_reply() frees result */
+ return send_addrinfo_reply(out_fd, req->id, ret, result, errno, h_errno);
+ }
+
+ case REQUEST_NAMEINFO: {
+ const NameInfoRequest *ni_req = &packet->nameinfo_request;
+ char hostbuf[NI_MAXHOST], servbuf[NI_MAXSERV];
+ union sockaddr_union sa;
+ int ret;
+
+ assert(length >= sizeof(NameInfoRequest));
+ assert(length == sizeof(NameInfoRequest) + ni_req->sockaddr_len);
+ assert(sizeof(sa) >= ni_req->sockaddr_len);
+
+ memcpy(&sa, (const uint8_t *) ni_req + sizeof(NameInfoRequest), ni_req->sockaddr_len);
+
+ ret = getnameinfo(&sa.sa, ni_req->sockaddr_len,
+ ni_req->gethost ? hostbuf : NULL, ni_req->gethost ? sizeof(hostbuf) : 0,
+ ni_req->getserv ? servbuf : NULL, ni_req->getserv ? sizeof(servbuf) : 0,
+ ni_req->flags);
+
+ return send_nameinfo_reply(out_fd, req->id, ret,
+ ret == 0 && ni_req->gethost ? hostbuf : NULL,
+ ret == 0 && ni_req->getserv ? servbuf : NULL,
+ errno, h_errno);
+ }
+
+ case REQUEST_TERMINATE:
+ /* Quit */
+ return -ECONNRESET;
+
+ default:
+ assert_not_reached("Unknown request");
+ }
+
+ return 0;
+}
+
+static void* thread_worker(void *p) {
+ sd_resolve *resolve = p;
+ sigset_t fullset;
+
+ /* No signals in this thread please */
+ assert_se(sigfillset(&fullset) == 0);
+ assert_se(pthread_sigmask(SIG_BLOCK, &fullset, NULL) == 0);
+
+ /* Assign a pretty name to this thread */
+ (void) prctl(PR_SET_NAME, (unsigned long) "sd-resolve");
+
+ while (!resolve->dead) {
+ union {
+ Packet packet;
+ uint8_t space[BUFSIZE];
+ } buf;
+ ssize_t length;
+
+ length = recv(resolve->fds[REQUEST_RECV_FD], &buf, sizeof(buf), 0);
+ if (length < 0) {
+ if (errno == EINTR)
+ continue;
+
+ break;
+ }
+ if (length == 0)
+ break;
+
+ if (resolve->dead)
+ break;
+
+ if (handle_request(resolve->fds[RESPONSE_SEND_FD], &buf.packet, (size_t) length) < 0)
+ break;
+ }
+
+ send_died(resolve->fds[RESPONSE_SEND_FD]);
+
+ return NULL;
+}
+
+static int start_threads(sd_resolve *resolve, unsigned extra) {
+ unsigned n;
+ int r;
+
+ n = resolve->n_outstanding + extra;
+ n = CLAMP(n, WORKERS_MIN, WORKERS_MAX);
+
+ while (resolve->n_valid_workers < n) {
+
+ r = pthread_create(&resolve->workers[resolve->n_valid_workers], NULL, thread_worker, resolve);
+ if (r != 0)
+ return -r;
+
+ resolve->n_valid_workers++;
+ }
+
+ return 0;
+}
+
+static bool resolve_pid_changed(sd_resolve *r) {
+ assert(r);
+
+ /* We don't support people creating a resolver and keeping it
+ * around after fork(). Let's complain. */
+
+ return r->original_pid != getpid();
+}
+
+_public_ int sd_resolve_new(sd_resolve **ret) {
+ sd_resolve *resolve = NULL;
+ int i, r;
+
+ assert_return(ret, -EINVAL);
+
+ resolve = new0(sd_resolve, 1);
+ if (!resolve)
+ return -ENOMEM;
+
+ resolve->n_ref = 1;
+ resolve->original_pid = getpid();
+
+ for (i = 0; i < _FD_MAX; i++)
+ resolve->fds[i] = -1;
+
+ r = socketpair(PF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0, resolve->fds + REQUEST_RECV_FD);
+ if (r < 0) {
+ r = -errno;
+ goto fail;
+ }
+
+ r = socketpair(PF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0, resolve->fds + RESPONSE_RECV_FD);
+ if (r < 0) {
+ r = -errno;
+ goto fail;
+ }
+
+ fd_inc_sndbuf(resolve->fds[REQUEST_SEND_FD], QUERIES_MAX * BUFSIZE);
+ fd_inc_rcvbuf(resolve->fds[REQUEST_RECV_FD], QUERIES_MAX * BUFSIZE);
+ fd_inc_sndbuf(resolve->fds[RESPONSE_SEND_FD], QUERIES_MAX * BUFSIZE);
+ fd_inc_rcvbuf(resolve->fds[RESPONSE_RECV_FD], QUERIES_MAX * BUFSIZE);
+
+ fd_nonblock(resolve->fds[RESPONSE_RECV_FD], true);
+
+ *ret = resolve;
+ return 0;
+
+fail:
+ sd_resolve_unref(resolve);
+ return r;
+}
+
+_public_ int sd_resolve_default(sd_resolve **ret) {
+
+ static thread_local sd_resolve *default_resolve = NULL;
+ sd_resolve *e = NULL;
+ int r;
+
+ if (!ret)
+ return !!default_resolve;
+
+ if (default_resolve) {
+ *ret = sd_resolve_ref(default_resolve);
+ return 0;
+ }
+
+ r = sd_resolve_new(&e);
+ if (r < 0)
+ return r;
+
+ e->default_resolve_ptr = &default_resolve;
+ e->tid = gettid();
+ default_resolve = e;
+
+ *ret = e;
+ return 1;
+}
+
+_public_ int sd_resolve_get_tid(sd_resolve *resolve, pid_t *tid) {
+ assert_return(resolve, -EINVAL);
+ assert_return(tid, -EINVAL);
+ assert_return(!resolve_pid_changed(resolve), -ECHILD);
+
+ if (resolve->tid != 0) {
+ *tid = resolve->tid;
+ return 0;
+ }
+
+ if (resolve->event)
+ return sd_event_get_tid(resolve->event, tid);
+
+ return -ENXIO;
+}
+
+static void resolve_free(sd_resolve *resolve) {
+ PROTECT_ERRNO;
+ sd_resolve_query *q;
+ unsigned i;
+
+ assert(resolve);
+
+ while ((q = resolve->queries)) {
+ assert(q->floating);
+ resolve_query_disconnect(q);
+ sd_resolve_query_unref(q);
+ }
+
+ if (resolve->default_resolve_ptr)
+ *(resolve->default_resolve_ptr) = NULL;
+
+ resolve->dead = true;
+
+ sd_resolve_detach_event(resolve);
+
+ if (resolve->fds[REQUEST_SEND_FD] >= 0) {
+
+ RHeader req = {
+ .type = REQUEST_TERMINATE,
+ .length = sizeof(req)
+ };
+
+ /* Send one termination packet for each worker */
+ for (i = 0; i < resolve->n_valid_workers; i++)
+ (void) send(resolve->fds[REQUEST_SEND_FD], &req, req.length, MSG_NOSIGNAL);
+ }
+
+ /* Now terminate them and wait until they are gone.
+ If we get an error than most likely the thread already exited. */
+ for (i = 0; i < resolve->n_valid_workers; i++)
+ (void) pthread_join(resolve->workers[i], NULL);
+
+ /* Close all communication channels */
+ for (i = 0; i < _FD_MAX; i++)
+ safe_close(resolve->fds[i]);
+
+ free(resolve);
+}
+
+_public_ sd_resolve* sd_resolve_ref(sd_resolve *resolve) {
+ assert_return(resolve, NULL);
+
+ assert(resolve->n_ref >= 1);
+ resolve->n_ref++;
+
+ return resolve;
+}
+
+_public_ sd_resolve* sd_resolve_unref(sd_resolve *resolve) {
+
+ if (!resolve)
+ return NULL;
+
+ assert(resolve->n_ref >= 1);
+ resolve->n_ref--;
+
+ if (resolve->n_ref <= 0)
+ resolve_free(resolve);
+
+ return NULL;
+}
+
+_public_ int sd_resolve_get_fd(sd_resolve *resolve) {
+ assert_return(resolve, -EINVAL);
+ assert_return(!resolve_pid_changed(resolve), -ECHILD);
+
+ return resolve->fds[RESPONSE_RECV_FD];
+}
+
+_public_ int sd_resolve_get_events(sd_resolve *resolve) {
+ assert_return(resolve, -EINVAL);
+ assert_return(!resolve_pid_changed(resolve), -ECHILD);
+
+ return resolve->n_queries > resolve->n_done ? POLLIN : 0;
+}
+
+_public_ int sd_resolve_get_timeout(sd_resolve *resolve, uint64_t *usec) {
+ assert_return(resolve, -EINVAL);
+ assert_return(usec, -EINVAL);
+ assert_return(!resolve_pid_changed(resolve), -ECHILD);
+
+ *usec = (uint64_t) -1;
+ return 0;
+}
+
+static sd_resolve_query *lookup_query(sd_resolve *resolve, unsigned id) {
+ sd_resolve_query *q;
+
+ assert(resolve);
+
+ q = resolve->query_array[id % QUERIES_MAX];
+ if (q)
+ if (q->id == id)
+ return q;
+
+ return NULL;
+}
+
+static int complete_query(sd_resolve *resolve, sd_resolve_query *q) {
+ int r;
+
+ assert(q);
+ assert(!q->done);
+ assert(q->resolve == resolve);
+
+ q->done = true;
+ resolve->n_done++;
+
+ resolve->current = sd_resolve_query_ref(q);
+
+ switch (q->type) {
+
+ case REQUEST_ADDRINFO:
+ r = getaddrinfo_done(q);
+ break;
+
+ case REQUEST_NAMEINFO:
+ r = getnameinfo_done(q);
+ break;
+
+ default:
+ assert_not_reached("Cannot complete unknown query type");
+ }
+
+ resolve->current = NULL;
+
+ if (q->floating) {
+ resolve_query_disconnect(q);
+ sd_resolve_query_unref(q);
+ }
+
+ sd_resolve_query_unref(q);
+
+ return r;
+}
+
+static int unserialize_addrinfo(const void **p, size_t *length, struct addrinfo **ret_ai) {
+ AddrInfoSerialization s;
+ size_t l;
+ struct addrinfo *ai;
+
+ assert(p);
+ assert(*p);
+ assert(ret_ai);
+ assert(length);
+
+ if (*length < sizeof(AddrInfoSerialization))
+ return -EBADMSG;
+
+ memcpy(&s, *p, sizeof(s));
+
+ l = sizeof(AddrInfoSerialization) + s.ai_addrlen + s.canonname_len;
+ if (*length < l)
+ return -EBADMSG;
+
+ ai = new0(struct addrinfo, 1);
+ if (!ai)
+ return -ENOMEM;
+
+ ai->ai_flags = s.ai_flags;
+ ai->ai_family = s.ai_family;
+ ai->ai_socktype = s.ai_socktype;
+ ai->ai_protocol = s.ai_protocol;
+ ai->ai_addrlen = s.ai_addrlen;
+
+ if (s.ai_addrlen > 0) {
+ ai->ai_addr = memdup((const uint8_t*) *p + sizeof(AddrInfoSerialization), s.ai_addrlen);
+ if (!ai->ai_addr) {
+ free(ai);
+ return -ENOMEM;
+ }
+ }
+
+ if (s.canonname_len > 0) {
+ ai->ai_canonname = memdup((const uint8_t*) *p + sizeof(AddrInfoSerialization) + s.ai_addrlen, s.canonname_len);
+ if (!ai->ai_canonname) {
+ free(ai->ai_addr);
+ free(ai);
+ return -ENOMEM;
+ }
+ }
+
+ *length -= l;
+ *ret_ai = ai;
+ *p = ((const uint8_t*) *p) + l;
+
+ return 0;
+}
+
+static int handle_response(sd_resolve *resolve, const Packet *packet, size_t length) {
+ const RHeader *resp;
+ sd_resolve_query *q;
+ int r;
+
+ assert(resolve);
+
+ resp = &packet->rheader;
+ assert(resp);
+ assert(length >= sizeof(RHeader));
+ assert(length == resp->length);
+
+ if (resp->type == RESPONSE_DIED) {
+ resolve->dead = true;
+ return 0;
+ }
+
+ assert(resolve->n_outstanding > 0);
+ resolve->n_outstanding--;
+
+ q = lookup_query(resolve, resp->id);
+ if (!q)
+ return 0;
+
+ switch (resp->type) {
+
+ case RESPONSE_ADDRINFO: {
+ const AddrInfoResponse *ai_resp = &packet->addrinfo_response;
+ const void *p;
+ size_t l;
+ struct addrinfo *prev = NULL;
+
+ assert(length >= sizeof(AddrInfoResponse));
+ assert(q->type == REQUEST_ADDRINFO);
+
+ q->ret = ai_resp->ret;
+ q->_errno = ai_resp->_errno;
+ q->_h_errno = ai_resp->_h_errno;
+
+ l = length - sizeof(AddrInfoResponse);
+ p = (const uint8_t*) resp + sizeof(AddrInfoResponse);
+
+ while (l > 0 && p) {
+ struct addrinfo *ai = NULL;
+
+ r = unserialize_addrinfo(&p, &l, &ai);
+ if (r < 0) {
+ q->ret = EAI_SYSTEM;
+ q->_errno = -r;
+ q->_h_errno = 0;
+ freeaddrinfo(q->addrinfo);
+ q->addrinfo = NULL;
+ break;
+ }
+
+ if (prev)
+ prev->ai_next = ai;
+ else
+ q->addrinfo = ai;
+
+ prev = ai;
+ }
+
+ return complete_query(resolve, q);
+ }
+
+ case RESPONSE_NAMEINFO: {
+ const NameInfoResponse *ni_resp = &packet->nameinfo_response;
+
+ assert(length >= sizeof(NameInfoResponse));
+ assert(q->type == REQUEST_NAMEINFO);
+
+ q->ret = ni_resp->ret;
+ q->_errno = ni_resp->_errno;
+ q->_h_errno = ni_resp->_h_errno;
+
+ if (ni_resp->hostlen > 0) {
+ q->host = strndup((const char*) ni_resp + sizeof(NameInfoResponse), ni_resp->hostlen-1);
+ if (!q->host) {
+ q->ret = EAI_MEMORY;
+ q->_errno = ENOMEM;
+ q->_h_errno = 0;
+ }
+ }
+
+ if (ni_resp->servlen > 0) {
+ q->serv = strndup((const char*) ni_resp + sizeof(NameInfoResponse) + ni_resp->hostlen, ni_resp->servlen-1);
+ if (!q->serv) {
+ q->ret = EAI_MEMORY;
+ q->_errno = ENOMEM;
+ q->_h_errno = 0;
+ }
+ }
+
+ return complete_query(resolve, q);
+ }
+
+ default:
+ return 0;
+ }
+}
+
+_public_ int sd_resolve_process(sd_resolve *resolve) {
+ RESOLVE_DONT_DESTROY(resolve);
+
+ union {
+ Packet packet;
+ uint8_t space[BUFSIZE];
+ } buf;
+ ssize_t l;
+ int r;
+
+ assert_return(resolve, -EINVAL);
+ assert_return(!resolve_pid_changed(resolve), -ECHILD);
+
+ /* We don't allow recursively invoking sd_resolve_process(). */
+ assert_return(!resolve->current, -EBUSY);
+
+ l = recv(resolve->fds[RESPONSE_RECV_FD], &buf, sizeof(buf), 0);
+ if (l < 0) {
+ if (errno == EAGAIN)
+ return 0;
+
+ return -errno;
+ }
+ if (l == 0)
+ return -ECONNREFUSED;
+
+ r = handle_response(resolve, &buf.packet, (size_t) l);
+ if (r < 0)
+ return r;
+
+ return 1;
+}
+
+_public_ int sd_resolve_wait(sd_resolve *resolve, uint64_t timeout_usec) {
+ int r;
+
+ assert_return(resolve, -EINVAL);
+ assert_return(!resolve_pid_changed(resolve), -ECHILD);
+
+ if (resolve->n_done >= resolve->n_queries)
+ return 0;
+
+ do {
+ r = fd_wait_for_event(resolve->fds[RESPONSE_RECV_FD], POLLIN, timeout_usec);
+ } while (r == -EINTR);
+
+ if (r < 0)
+ return r;
+
+ return sd_resolve_process(resolve);
+}
+
+static int alloc_query(sd_resolve *resolve, bool floating, sd_resolve_query **_q) {
+ sd_resolve_query *q;
+ int r;
+
+ assert(resolve);
+ assert(_q);
+
+ if (resolve->n_queries >= QUERIES_MAX)
+ return -ENOBUFS;
+
+ r = start_threads(resolve, 1);
+ if (r < 0)
+ return r;
+
+ while (resolve->query_array[resolve->current_id % QUERIES_MAX])
+ resolve->current_id++;
+
+ q = resolve->query_array[resolve->current_id % QUERIES_MAX] = new0(sd_resolve_query, 1);
+ if (!q)
+ return -ENOMEM;
+
+ q->n_ref = 1;
+ q->resolve = resolve;
+ q->floating = floating;
+ q->id = resolve->current_id++;
+
+ if (!floating)
+ sd_resolve_ref(resolve);
+
+ LIST_PREPEND(queries, resolve->queries, q);
+ resolve->n_queries++;
+
+ *_q = q;
+ return 0;
+}
+
+_public_ int sd_resolve_getaddrinfo(
+ sd_resolve *resolve,
+ sd_resolve_query **_q,
+ const char *node, const char *service,
+ const struct addrinfo *hints,
+ sd_resolve_getaddrinfo_handler_t callback, void *userdata) {
+
+ AddrInfoRequest req = {};
+ struct msghdr mh = {};
+ struct iovec iov[3];
+ sd_resolve_query *q;
+ int r;
+
+ assert_return(resolve, -EINVAL);
+ assert_return(node || service, -EINVAL);
+ assert_return(callback, -EINVAL);
+ assert_return(!resolve_pid_changed(resolve), -ECHILD);
+
+ r = alloc_query(resolve, !_q, &q);
+ if (r < 0)
+ return r;
+
+ q->type = REQUEST_ADDRINFO;
+ q->getaddrinfo_handler = callback;
+ q->userdata = userdata;
+
+ req.node_len = node ? strlen(node)+1 : 0;
+ req.service_len = service ? strlen(service)+1 : 0;
+
+ req.header.id = q->id;
+ req.header.type = REQUEST_ADDRINFO;
+ req.header.length = sizeof(AddrInfoRequest) + req.node_len + req.service_len;
+
+ if (hints) {
+ req.hints_valid = true;
+ req.ai_flags = hints->ai_flags;
+ req.ai_family = hints->ai_family;
+ req.ai_socktype = hints->ai_socktype;
+ req.ai_protocol = hints->ai_protocol;
+ }
+
+ iov[mh.msg_iovlen++] = (struct iovec) { .iov_base = &req, .iov_len = sizeof(AddrInfoRequest) };
+ if (node)
+ iov[mh.msg_iovlen++] = (struct iovec) { .iov_base = (void*) node, .iov_len = req.node_len };
+ if (service)
+ iov[mh.msg_iovlen++] = (struct iovec) { .iov_base = (void*) service, .iov_len = req.service_len };
+ mh.msg_iov = iov;
+
+ if (sendmsg(resolve->fds[REQUEST_SEND_FD], &mh, MSG_NOSIGNAL) < 0) {
+ sd_resolve_query_unref(q);
+ return -errno;
+ }
+
+ resolve->n_outstanding++;
+
+ if (_q)
+ *_q = q;
+
+ return 0;
+}
+
+static int getaddrinfo_done(sd_resolve_query* q) {
+ assert(q);
+ assert(q->done);
+ assert(q->getaddrinfo_handler);
+
+ errno = q->_errno;
+ h_errno = q->_h_errno;
+
+ return q->getaddrinfo_handler(q, q->ret, q->addrinfo, q->userdata);
+}
+
+_public_ int sd_resolve_getnameinfo(
+ sd_resolve *resolve,
+ sd_resolve_query**_q,
+ const struct sockaddr *sa, socklen_t salen,
+ int flags,
+ uint64_t get,
+ sd_resolve_getnameinfo_handler_t callback,
+ void *userdata) {
+
+ NameInfoRequest req = {};
+ struct msghdr mh = {};
+ struct iovec iov[2];
+ sd_resolve_query *q;
+ int r;
+
+ assert_return(resolve, -EINVAL);
+ assert_return(sa, -EINVAL);
+ assert_return(salen >= sizeof(struct sockaddr), -EINVAL);
+ assert_return(salen <= sizeof(union sockaddr_union), -EINVAL);
+ assert_return((get & ~SD_RESOLVE_GET_BOTH) == 0, -EINVAL);
+ assert_return(callback, -EINVAL);
+ assert_return(!resolve_pid_changed(resolve), -ECHILD);
+
+ r = alloc_query(resolve, !_q, &q);
+ if (r < 0)
+ return r;
+
+ q->type = REQUEST_NAMEINFO;
+ q->getnameinfo_handler = callback;
+ q->userdata = userdata;
+
+ req.header.id = q->id;
+ req.header.type = REQUEST_NAMEINFO;
+ req.header.length = sizeof(NameInfoRequest) + salen;
+
+ req.flags = flags;
+ req.sockaddr_len = salen;
+ req.gethost = !!(get & SD_RESOLVE_GET_HOST);
+ req.getserv = !!(get & SD_RESOLVE_GET_SERVICE);
+
+ iov[0] = (struct iovec) { .iov_base = &req, .iov_len = sizeof(NameInfoRequest) };
+ iov[1] = (struct iovec) { .iov_base = (void*) sa, .iov_len = salen };
+
+ mh.msg_iov = iov;
+ mh.msg_iovlen = 2;
+
+ if (sendmsg(resolve->fds[REQUEST_SEND_FD], &mh, MSG_NOSIGNAL) < 0) {
+ sd_resolve_query_unref(q);
+ return -errno;
+ }
+
+ resolve->n_outstanding++;
+
+ if (_q)
+ *_q = q;
+
+ return 0;
+}
+
+static int getnameinfo_done(sd_resolve_query *q) {
+
+ assert(q);
+ assert(q->done);
+ assert(q->getnameinfo_handler);
+
+ errno = q->_errno;
+ h_errno= q->_h_errno;
+
+ return q->getnameinfo_handler(q, q->ret, q->host, q->serv, q->userdata);
+}
+
+_public_ sd_resolve_query* sd_resolve_query_ref(sd_resolve_query *q) {
+ assert_return(q, NULL);
+
+ assert(q->n_ref >= 1);
+ q->n_ref++;
+
+ return q;
+}
+
+static void resolve_freeaddrinfo(struct addrinfo *ai) {
+ while (ai) {
+ struct addrinfo *next = ai->ai_next;
+
+ free(ai->ai_addr);
+ free(ai->ai_canonname);
+ free(ai);
+ ai = next;
+ }
+}
+
+static void resolve_query_disconnect(sd_resolve_query *q) {
+ sd_resolve *resolve;
+ unsigned i;
+
+ assert(q);
+
+ if (!q->resolve)
+ return;
+
+ resolve = q->resolve;
+ assert(resolve->n_queries > 0);
+
+ if (q->done) {
+ assert(resolve->n_done > 0);
+ resolve->n_done--;
+ }
+
+ i = q->id % QUERIES_MAX;
+ assert(resolve->query_array[i] == q);
+ resolve->query_array[i] = NULL;
+ LIST_REMOVE(queries, resolve->queries, q);
+ resolve->n_queries--;
+
+ q->resolve = NULL;
+ if (!q->floating)
+ sd_resolve_unref(resolve);
+}
+
+static void resolve_query_free(sd_resolve_query *q) {
+ assert(q);
+
+ resolve_query_disconnect(q);
+
+ resolve_freeaddrinfo(q->addrinfo);
+ free(q->host);
+ free(q->serv);
+ free(q);
+}
+
+_public_ sd_resolve_query* sd_resolve_query_unref(sd_resolve_query* q) {
+ if (!q)
+ return NULL;
+
+ assert(q->n_ref >= 1);
+ q->n_ref--;
+
+ if (q->n_ref <= 0)
+ resolve_query_free(q);
+
+ return NULL;
+}
+
+_public_ int sd_resolve_query_is_done(sd_resolve_query *q) {
+ assert_return(q, -EINVAL);
+ assert_return(!resolve_pid_changed(q->resolve), -ECHILD);
+
+ return q->done;
+}
+
+_public_ void* sd_resolve_query_set_userdata(sd_resolve_query *q, void *userdata) {
+ void *ret;
+
+ assert_return(q, NULL);
+ assert_return(!resolve_pid_changed(q->resolve), NULL);
+
+ ret = q->userdata;
+ q->userdata = userdata;
+
+ return ret;
+}
+
+_public_ void* sd_resolve_query_get_userdata(sd_resolve_query *q) {
+ assert_return(q, NULL);
+ assert_return(!resolve_pid_changed(q->resolve), NULL);
+
+ return q->userdata;
+}
+
+_public_ sd_resolve *sd_resolve_query_get_resolve(sd_resolve_query *q) {
+ assert_return(q, NULL);
+ assert_return(!resolve_pid_changed(q->resolve), NULL);
+
+ return q->resolve;
+}
+
+static int io_callback(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
+ sd_resolve *resolve = userdata;
+ int r;
+
+ assert(resolve);
+
+ r = sd_resolve_process(resolve);
+ if (r < 0)
+ return r;
+
+ return 1;
+}
+
+_public_ int sd_resolve_attach_event(sd_resolve *resolve, sd_event *event, int64_t priority) {
+ int r;
+
+ assert_return(resolve, -EINVAL);
+ assert_return(!resolve->event, -EBUSY);
+
+ assert(!resolve->event_source);
+
+ if (event)
+ resolve->event = sd_event_ref(event);
+ else {
+ r = sd_event_default(&resolve->event);
+ if (r < 0)
+ return r;
+ }
+
+ r = sd_event_add_io(resolve->event, &resolve->event_source, resolve->fds[RESPONSE_RECV_FD], POLLIN, io_callback, resolve);
+ if (r < 0)
+ goto fail;
+
+ r = sd_event_source_set_priority(resolve->event_source, priority);
+ if (r < 0)
+ goto fail;
+
+ return 0;
+
+fail:
+ sd_resolve_detach_event(resolve);
+ return r;
+}
+
+_public_ int sd_resolve_detach_event(sd_resolve *resolve) {
+ assert_return(resolve, -EINVAL);
+
+ if (!resolve->event)
+ return 0;
+
+ if (resolve->event_source) {
+ sd_event_source_set_enabled(resolve->event_source, SD_EVENT_OFF);
+ resolve->event_source = sd_event_source_unref(resolve->event_source);
+ }
+
+ resolve->event = sd_event_unref(resolve->event);
+ return 1;
+}
+
+_public_ sd_event *sd_resolve_get_event(sd_resolve *resolve) {
+ assert_return(resolve, NULL);
+
+ return resolve->event;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-resolve/test-resolve.c b/src/libsystemd/libsystemd-internal/sd-resolve/test-resolve.c
new file mode 100644
index 0000000000..0209cc77e7
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-resolve/test-resolve.c
@@ -0,0 +1,114 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2005-2008 Lennart Poettering
+ Copyright 2014 Daniel Buch
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <arpa/inet.h>
+#include <errno.h>
+#include <netinet/in.h>
+#include <resolv.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/socket.h>
+
+#include <systemd/sd-resolve.h>
+
+#include "alloc-util.h"
+#include "macro.h"
+#include "socket-util.h"
+#include "string-util.h"
+
+static int getaddrinfo_handler(sd_resolve_query *q, int ret, const struct addrinfo *ai, void *userdata) {
+ const struct addrinfo *i;
+
+ assert_se(q);
+
+ if (ret != 0) {
+ log_error("getaddrinfo error: %s %i", gai_strerror(ret), ret);
+ return 0;
+ }
+
+ for (i = ai; i; i = i->ai_next) {
+ _cleanup_free_ char *addr = NULL;
+
+ assert_se(sockaddr_pretty(i->ai_addr, i->ai_addrlen, false, true, &addr) == 0);
+ puts(addr);
+ }
+
+ printf("canonical name: %s\n", strna(ai->ai_canonname));
+
+ return 0;
+}
+
+static int getnameinfo_handler(sd_resolve_query *q, int ret, const char *host, const char *serv, void *userdata) {
+ assert_se(q);
+
+ if (ret != 0) {
+ log_error("getnameinfo error: %s %i", gai_strerror(ret), ret);
+ return 0;
+ }
+
+ printf("Host: %s — Serv: %s\n", strna(host), strna(serv));
+ return 0;
+}
+
+int main(int argc, char *argv[]) {
+ _cleanup_(sd_resolve_query_unrefp) sd_resolve_query *q1 = NULL, *q2 = NULL;
+ _cleanup_(sd_resolve_unrefp) sd_resolve *resolve = NULL;
+ int r = 0;
+
+ struct addrinfo hints = {
+ .ai_family = PF_UNSPEC,
+ .ai_socktype = SOCK_STREAM,
+ .ai_flags = AI_CANONNAME
+ };
+
+ struct sockaddr_in sa = {
+ .sin_family = AF_INET,
+ .sin_port = htons(80)
+ };
+
+ assert_se(sd_resolve_default(&resolve) >= 0);
+
+ /* Test a floating resolver query */
+ sd_resolve_getaddrinfo(resolve, NULL, "redhat.com", "http", NULL, getaddrinfo_handler, NULL);
+
+ /* Make a name -> address query */
+ r = sd_resolve_getaddrinfo(resolve, &q1, argc >= 2 ? argv[1] : "www.heise.de", NULL, &hints, getaddrinfo_handler, NULL);
+ if (r < 0)
+ log_error_errno(r, "sd_resolve_getaddrinfo(): %m");
+
+ /* Make an address -> name query */
+ sa.sin_addr.s_addr = inet_addr(argc >= 3 ? argv[2] : "193.99.144.71");
+ r = sd_resolve_getnameinfo(resolve, &q2, (struct sockaddr*) &sa, sizeof(sa), 0, SD_RESOLVE_GET_BOTH, getnameinfo_handler, NULL);
+ if (r < 0)
+ log_error_errno(r, "sd_resolve_getnameinfo(): %m");
+
+ /* Wait until all queries are completed */
+ for (;;) {
+ r = sd_resolve_wait(resolve, (uint64_t) -1);
+ if (r == 0)
+ break;
+ if (r < 0) {
+ log_error_errno(r, "sd_resolve_wait(): %m");
+ assert_not_reached("sd_resolve_wait() failed");
+ }
+ }
+
+ return 0;
+}
diff --git a/src/libsystemd/libsystemd-internal/sd-utf8/sd-utf8.c b/src/libsystemd/libsystemd-internal/sd-utf8/sd-utf8.c
new file mode 100644
index 0000000000..77be8e1996
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-utf8/sd-utf8.c
@@ -0,0 +1,35 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <systemd/sd-utf8.h>
+
+#include "utf8.h"
+#include "util.h"
+
+_public_ const char *sd_utf8_is_valid(const char *s) {
+ assert_return(s, NULL);
+
+ return utf8_is_valid(s);
+}
+
+_public_ const char *sd_ascii_is_valid(const char *s) {
+ assert_return(s, NULL);
+
+ return ascii_is_valid(s);
+}
diff --git a/src/libsystemd/libsystemd-internal/subdir.mk b/src/libsystemd/libsystemd-internal/subdir.mk
new file mode 100644
index 0000000000..35def00fdc
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/subdir.mk
@@ -0,0 +1,29 @@
+# -*- Mode: makefile; indent-tabs-mode: t -*-
+#
+# This file is part of systemd.
+#
+# Copyright 2010-2012 Lennart Poettering
+# Copyright 2010-2012 Kay Sievers
+# Copyright 2013 Zbigniew Jędrzejewski-Szmek
+# Copyright 2013 David Strauss
+# Copyright 2016 Luke Shumaker
+#
+# systemd is free software; you can redistribute it and/or modify it
+# under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation; either version 2.1 of the License, or
+# (at your option) any later version.
+#
+# systemd is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with systemd; If not, see <http://www.gnu.org/licenses/>.
+include $(dir $(lastword $(MAKEFILE_LIST)))/../../config.mk
+include $(topsrcdir)/build-aux/Makefile.head.mk
+
+systemd.CPPFLAGS += -DLIBDIR=\"$(libdir)\"
+systemd.CPPFLAGS += -DUDEVLIBEXECDIR=\"$(udevlibexecdir)\"
+
+include $(topsrcdir)/build-aux/Makefile.tail.mk