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-rw-r--r--Makefile-man.am7
-rw-r--r--Makefile.am21
-rw-r--r--man/networkd-wait-online.conf.xml95
-rw-r--r--man/systemd-networkd-wait-online.service.xml81
-rw-r--r--man/systemd-networkd.service.xml1
-rw-r--r--src/libsystemd-network/network-internal.c14
-rw-r--r--src/libsystemd-network/network-internal.h2
-rw-r--r--src/network/.gitignore1
-rw-r--r--src/network/networkd-link.c15
-rw-r--r--src/network/networkd-wait-online-gperf.gperf17
-rw-r--r--src/network/networkd-wait-online.c195
-rw-r--r--src/network/networkd-wait-online.conf11
-rw-r--r--src/network/networkd-wait-online.h41
-rw-r--r--units/.gitignore1
-rw-r--r--units/systemd-networkd-wait-online.service.in23
-rw-r--r--units/systemd-networkd.service.in1
16 files changed, 493 insertions, 33 deletions
diff --git a/Makefile-man.am b/Makefile-man.am
index 90d32c5212..db66e020c0 100644
--- a/Makefile-man.am
+++ b/Makefile-man.am
@@ -1039,12 +1039,17 @@ endif
if ENABLE_NETWORKD
MANPAGES += \
man/systemd-networkd.service.8 \
+ man/systemd-networkd-wait-online.service.8 \
+ man/networkd-wait-online.conf.5 \
man/systemd.netdev.5 \
man/systemd.network.5
MANPAGES_ALIAS += \
- man/systemd-networkd.8
+ man/systemd-networkd.8 \
+ man/systemd-networkd-wait-online.8
man/systemd-networkd.8: man/systemd-networkd.service.8
man/systemd-networkd.html: man/systemd-networkd.service.html
+man/systemd-networkd-wait-online.8: man/systemd-networkd-wait-online.service.8
+man/systemd-networkd-wait-online.html: man/systemd-networkd-wait-online.service.html
$(html-alias)
endif
diff --git a/Makefile.am b/Makefile.am
index 6967b6f289..f261c476da 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -4134,6 +4134,7 @@ noinst_LTLIBRARIES += \
libsystemd-networkd-core.la
libsystemd_networkd_core_la_SOURCES = \
+ src/libsystemd-network/network-internal.h \
src/network/networkd.h \
src/network/networkd-link.c \
src/network/networkd-netdev.c \
@@ -4154,16 +4155,23 @@ libsystemd_networkd_core_la_LIBADD = \
libsystemd-shared.la
nodist_systemunit_DATA += \
- units/systemd-networkd.service
+ units/systemd-networkd.service \
+ units/systemd-networkd-wait-online.service
GENERAL_ALIASES += \
- $(systemunitdir)/systemd-networkd.service $(pkgsysconfdir)/system/multi-user.target.wants/systemd-networkd.service
+ $(systemunitdir)/systemd-networkd.service $(pkgsysconfdir)/system/multi-user.target.wants/systemd-networkd.service \
+ $(systemunitdir)/systemd-networkd.service $(pkgsysconfdir)/system/network-online.target.wants/systemd-networkd-wait-online.service
rootlibexec_PROGRAMS += \
systemd-networkd-wait-online
systemd_networkd_wait_online_SOURCES = \
- src/network/networkd-wait-online.c
+ src/libsystemd-network/network-internal.h \
+ src/network/networkd-wait-online.c \
+ src/network/networkd-wait-online.h
+
+nodist_systemd_networkd_wait_online_SOURCES = \
+ src/network/networkd-wait-online-gperf.c
systemd_networkd_wait_online_LDADD = \
libsystemd-internal.la \
@@ -4178,14 +4186,19 @@ test_network_LDADD = \
tests += \
test-network
+dist_pkgsysconf_DATA += \
+ src/network/networkd-wait-online.conf
+
EXTRA_DIST += \
src/network/networkd-network-gperf.gperf \
src/network/networkd-netdev-gperf.gperf \
+ src/network/networkd-wait-online-gperf.gperf \
units/systemd-networkd.service.in
CLEANFILES += \
src/network/networkd-network-gperf.c \
- src/network/networkd-netdev-gperf.c
+ src/network/networkd-netdev-gperf.c \
+ src/network/networkd-wait-online-gperf.c
endif
# ------------------------------------------------------------------------------
diff --git a/man/networkd-wait-online.conf.xml b/man/networkd-wait-online.conf.xml
new file mode 100644
index 0000000000..821b0efedd
--- /dev/null
+++ b/man/networkd-wait-online.conf.xml
@@ -0,0 +1,95 @@
+<?xml version='1.0'?> <!--*-nxml-*-->
+<?xml-stylesheet type="text/xsl" href="http://docbook.sourceforge.net/release/xsl/current/xhtml/docbook.xsl"?>
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
+ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+
+<!--
+ This file is part of systemd.
+
+ 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/>.
+-->
+
+<refentry id="networkd-wait-online.conf" conditional='ENABLE_NETWORKD'>
+ <refentryinfo>
+ <title>networkd-wait-online.conf</title>
+ <productname>systemd</productname>
+
+ <authorgroup>
+ <author>
+ <contrib>Developer</contrib>
+ <firstname>Tom</firstname>
+ <surname>Gundersen</surname>
+ <email>teg@jklm.no</email>
+ </author>
+ </authorgroup>
+ </refentryinfo>
+
+ <refmeta>
+ <refentrytitle>networkd-wait-online.conf</refentrytitle>
+ <manvolnum>5</manvolnum>
+ </refmeta>
+
+ <refnamediv>
+ <refname>networkd-wait-online.conf</refname>
+ <refpurpose>Network manager configuration file</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <para><filename>/etc/systemd/networkd-wait-online.conf</filename></para>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>This file configures various parameters of the systemd network manager's wait-online service, <citerefentry><refentrytitle>systemd-networkd-wait-online.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
+
+ </refsect1>
+
+ <refsect1>
+ <title>Options</title>
+
+ <para>All options are configured in the
+ <literal>[WaitOnline]</literal> section:</para>
+
+ <variablelist>
+
+ <varlistentry>
+ <term><varname>After=</varname></term>
+
+ <listitem><para>Takes a white-space
+ separated list of network interface
+ names. Configures which network interfaces
+ to wait for before deciding if the machine
+ is considered to be online. The default is
+ to wait for at least one that is managed by
+ <citerefentry><refentrytitle>systemd-networkd.service
+ </refentrytitle><manvolnum>8</manvolnum></citerefentry>,
+ or one other which is brought up by someone else.
+ </para></listitem>
+ </varlistentry>
+
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>See Also</title>
+ <para>
+ <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
+ </para>
+ </refsect1>
+
+</refentry>
diff --git a/man/systemd-networkd-wait-online.service.xml b/man/systemd-networkd-wait-online.service.xml
new file mode 100644
index 0000000000..d8f2226552
--- /dev/null
+++ b/man/systemd-networkd-wait-online.service.xml
@@ -0,0 +1,81 @@
+<?xml version='1.0'?> <!--*-nxml-*-->
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
+ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+
+<!--
+ This file is part of systemd.
+
+ 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/>.
+-->
+
+<refentry id="systemd-networkd-wait-online.service" conditional='ENABLE_NETWORKD'>
+
+ <refentryinfo>
+ <title>systemd-networkd.service</title>
+ <productname>systemd</productname>
+
+ <authorgroup>
+ <author>
+ <contrib>Developer</contrib>
+ <firstname>Tom</firstname>
+ <surname>Gundersen</surname>
+ <email>teg@jklm.no</email>
+ </author>
+ </authorgroup>
+ </refentryinfo>
+
+ <refmeta>
+ <refentrytitle>systemd-networkd-wait-online.service</refentrytitle>
+ <manvolnum>8</manvolnum>
+ </refmeta>
+
+ <refnamediv>
+ <refname>systemd-networkd-wait-online.service</refname>
+ <refname>systemd-networkd-wait-online</refname>
+ <refpurpose>Wait for network to become online</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <para><filename>systemd-networkd-wait-online.service</filename></para>
+ <para><filename>/usr/lib/systemd/systemd-networkd-wait-online</filename></para>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para><command>systemd-networkd-wait-online</command> is a
+ one-shot system service that waits for the network to be configured.
+ It will wait for all links managed by
+ <citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
+ to be fully configured. It will wait for at least one link managed by
+ systemd-networkd to appear, or for a link to be brought up by someone else.
+
+ To wait for a specific set of links, see
+ <citerefentry><refentrytitle>systemd-networkd.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
+ This may be necessary on systems with more than one active link.
+ </para>
+ </refsect1>
+
+ <refsect1>
+ <title>See Also</title>
+ <para>
+ <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemd-networkd.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
+ </para>
+ </refsect1>
+
+</refentry>
diff --git a/man/systemd-networkd.service.xml b/man/systemd-networkd.service.xml
index bcdd9adae0..ca35a8850b 100644
--- a/man/systemd-networkd.service.xml
+++ b/man/systemd-networkd.service.xml
@@ -101,6 +101,7 @@
<citerefentry><refentrytitle>systemd.link</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd.netdev</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ <citerefentry><refentrytitle>systemd-network-wait-online.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
</para>
</refsect1>
diff --git a/src/libsystemd-network/network-internal.c b/src/libsystemd-network/network-internal.c
index 52e614c4ea..e7ba628fc7 100644
--- a/src/libsystemd-network/network-internal.c
+++ b/src/libsystemd-network/network-internal.c
@@ -326,3 +326,17 @@ int net_parse_inaddr(const char *address, unsigned char *family, void *dst) {
return 0;
}
+
+bool link_has_carrier(unsigned flags, uint8_t operstate) {
+ /* see Documentation/networking/operstates.txt in the kernel sources */
+
+ if (operstate == IF_OPER_UP)
+ return true;
+
+ if (operstate == IF_OPER_UNKNOWN)
+ /* operstate may not be implemented, so fall back to flags */
+ if ((flags & IFF_LOWER_UP) && !(flags & IFF_DORMANT))
+ return true;
+
+ return false;
+}
diff --git a/src/libsystemd-network/network-internal.h b/src/libsystemd-network/network-internal.h
index 836472a776..ef3cb8b91d 100644
--- a/src/libsystemd-network/network-internal.h
+++ b/src/libsystemd-network/network-internal.h
@@ -65,3 +65,5 @@ int config_parse_ifalias(const char *unit, const char *filename, unsigned line,
int net_parse_inaddr(const char *address, unsigned char *family, void *dst);
int net_get_unique_predictable_data(struct udev_device *device, uint8_t result[8]);
+
+bool link_has_carrier(unsigned flags, uint8_t operstate);
diff --git a/src/network/.gitignore b/src/network/.gitignore
index 8858596489..e3b86e2d4a 100644
--- a/src/network/.gitignore
+++ b/src/network/.gitignore
@@ -1,2 +1,3 @@
/networkd-network-gperf.c
/networkd-netdev-gperf.c
+/networkd-wait-online-gperf.c
diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c
index 310b9f54f9..015a82d0d6 100644
--- a/src/network/networkd-link.c
+++ b/src/network/networkd-link.c
@@ -30,6 +30,7 @@
#include "bus-util.h"
#include "network-internal.h"
+#include "network-util.h"
#include "dhcp-lease-internal.h"
static int ipv4ll_address_update(Link *link, bool deprecate);
@@ -1098,20 +1099,6 @@ static int link_acquire_conf(Link *link) {
return 0;
}
-static bool link_has_carrier(unsigned flags, uint8_t operstate) {
- /* see Documentation/networking/operstates.txt in the kernel sources */
-
- if (operstate == IF_OPER_UP)
- return true;
-
- if (operstate == IF_OPER_UNKNOWN)
- /* operstate may not be implemented, so fall back to flags */
- if ((flags & IFF_LOWER_UP) && !(flags & IFF_DORMANT))
- return true;
-
- return false;
-}
-
static int link_update_flags(Link *link, sd_rtnl_message *m) {
unsigned flags, flags_added, flags_removed, generic_flags;
uint8_t operstate;
diff --git a/src/network/networkd-wait-online-gperf.gperf b/src/network/networkd-wait-online-gperf.gperf
new file mode 100644
index 0000000000..0a5e5eee55
--- /dev/null
+++ b/src/network/networkd-wait-online-gperf.gperf
@@ -0,0 +1,17 @@
+%{
+#include <stddef.h>
+#include "conf-parser.h"
+#include "networkd-wait-online.h"
+%}
+struct ConfigPerfItem;
+%null_strings
+%language=ANSI-C
+%define slot-name section_and_lvalue
+%define hash-function-name wait_online_gperf_hash
+%define lookup-function-name wait_online_gperf_lookup
+%readonly-tables
+%omit-struct-type
+%struct-type
+%includes
+%%
+WaitOnline.ExpectedLinks, config_parse_strv, 0, offsetof(Manager, expected_links)
diff --git a/src/network/networkd-wait-online.c b/src/network/networkd-wait-online.c
index e62859e1cf..6a7c62feae 100644
--- a/src/network/networkd-wait-online.c
+++ b/src/network/networkd-wait-online.c
@@ -19,16 +19,26 @@
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
+#include <netinet/ether.h>
+#include <linux/if.h>
+
#include "sd-event.h"
#include "event-util.h"
+#include "sd-rtnl.h"
+#include "rtnl-util.h"
#include "sd-daemon.h"
#include "sd-network.h"
#include "network-util.h"
+#include "network-internal.h"
+#include "networkd-wait-online.h"
+#include "conf-parser.h"
+#include "strv.h"
#include "util.h"
-static bool all_configured(void) {
+static bool all_configured(Manager *m) {
_cleanup_free_ unsigned *indices = NULL;
+ char **ifname;
bool one_ready = false;
int r, n, i;
@@ -36,35 +46,168 @@ static bool all_configured(void) {
if (n <= 0)
return false;
+ STRV_FOREACH(ifname, m->expected_links) {
+ _cleanup_rtnl_message_unref_ sd_rtnl_message *message = NULL, *reply = NULL;
+ bool found = false;
+ int index;
+
+ r = sd_rtnl_message_new_link(m->rtnl, &message, RTM_GETLINK, 0);
+ if (r < 0) {
+ log_warning("colud not create GETLINK message: %s", strerror(-r));
+ return false;
+ }
+
+ r = sd_rtnl_message_append_string(message, IFLA_IFNAME, *ifname);
+ if (r < 0) {
+ log_warning("could not attach ifname to GETLINK message: %s", strerror(-r));
+ return false;
+ }
+
+ r = sd_rtnl_call(m->rtnl, message, 0, &reply);
+ if (r < 0) {
+ if (r != -ENODEV)
+ log_warning("could not get link info for %s: %s", *ifname,
+ strerror(-r));
+
+ /* link does not yet exist */
+ return false;
+ }
+
+ r = sd_rtnl_message_link_get_ifindex(reply, &index);
+ if (r < 0) {
+ log_warning("could not get ifindex: %s", strerror(-r));
+ return false;
+ }
+
+ if (index <= 0) {
+ log_warning("invalid ifindex %d for %s", index, *ifname);
+ return false;
+ }
+
+ for (i = 0; i < n; i++) {
+ if (indices[i] == (unsigned) index) {
+ found = true;
+ break;
+ }
+ }
+
+ if (!found)
+ /* link exists, but networkd is not yet aware of it */
+ return false;
+ }
+
for (i = 0; i < n; i++) {
_cleanup_free_ char *state = NULL;
r = sd_network_get_link_state(indices[i], &state);
- if (r == -EUNATCH)
+ if (r == -EUNATCH) {
+ _cleanup_rtnl_message_unref_ sd_rtnl_message *message = NULL, *reply = NULL;
+ unsigned flags;
+ uint8_t operstate;
+
+ r = sd_rtnl_message_new_link(m->rtnl, &message, RTM_GETLINK, indices[i]);
+ if (r < 0) {
+ log_warning("could not create GETLINK message: %s", strerror(-r));
+ return false;
+ }
+
+ r = sd_rtnl_call(m->rtnl, message, 0, &reply);
+ if (r < 0) {
+ log_debug("could not get link %u: %s", indices[i], strerror(-r));
+ continue;
+ }
+
+ r = sd_rtnl_message_link_get_flags(reply, &flags);
+ if (r < 0) {
+ log_warning("could not get link flags: %s", strerror(-r));
+ return false;
+ }
+
+ r = sd_rtnl_message_read_u8(reply, IFLA_OPERSTATE, &operstate);
+ if (r < 0) {
+ log_debug("could not get link operational state: %s", strerror(-r));
+ operstate = IF_OPER_UNKNOWN;
+ }
+
+ if (!(flags & IFF_LOOPBACK) &&
+ link_has_carrier(flags, operstate)) {
+ /* this link is not managed by us,
+ but something else may have
+ made it ready, so don't block */
+ one_ready = true;
+ }
+
continue;
- if (r < 0 || !streq(state, "configured"))
+ } else if (r < 0 || !streq(state, "configured"))
return false;
+ /* we wait for at least one link to appear */
one_ready = true;
}
return one_ready;
}
-static int event_handler(sd_event_source *s, int fd, uint32_t revents,
+static int monitor_event_handler(sd_event_source *s, int fd, uint32_t revents,
void *userdata) {
- sd_event *event = userdata;
+ Manager *m = userdata;
+
+ assert(m);
+ assert(m->event);
+
+ if (all_configured(m))
+ sd_event_exit(m->event, 0);
+
+ return 1;
+}
- assert(event);
+static int newlink_event_handler(sd_rtnl *rtnl, sd_rtnl_message *message, void *userdata) {
+ Manager *m = userdata;
- if (all_configured())
- sd_event_exit(event, 0);
+ assert(m);
+ assert(m->event);
+
+ if (all_configured(m))
+ sd_event_exit(m->event, 0);
return 1;
}
+static int parse_config_file(Manager *m) {
+ static const char fn[] = "/etc/systemd/networkd-wait-online.conf";
+ _cleanup_fclose_ FILE *f = NULL;
+ int r;
+
+ f = fopen(fn, "re");
+ if (!f) {
+ if (errno == ENOENT)
+ return 0;
+
+ log_warning("Failed to open configuration file %s: %m", fn);
+ return -errno;
+ }
+
+ r = config_parse(NULL, fn, f, "WaitOnline\0", config_item_perf_lookup,
+ (void*) wait_online_gperf_lookup, false, false, m);
+ if (r < 0)
+ log_warning("Failed to parse configuration file: %s", strerror(-r));
+
+ return r;
+}
+
+void manager_free(Manager *m) {
+ if (!m)
+ return;
+
+ sd_event_unref(m->event);
+ sd_rtnl_unref(m->rtnl);
+ strv_free(m->expected_links);
+
+ free(m);
+}
+
int main(int argc, char *argv[]) {
- _cleanup_event_unref_ sd_event *event = NULL;
+ _cleanup_manager_free_ Manager *m = NULL;
_cleanup_event_source_unref_ sd_event_source *event_source = NULL;
_cleanup_network_monitor_unref_ sd_network_monitor *monitor = NULL;
int r, fd, events;
@@ -81,13 +224,21 @@ int main(int argc, char *argv[]) {
goto out;
}
+ m = new0(Manager, 1);
+ if (!m)
+ return log_oom();
+
+ r = parse_config_file(m);
+ if (r < 0)
+ goto out;
+
r = sd_network_monitor_new(NULL, &monitor);
if (r < 0) {
log_error("Could not create monitor: %s", strerror(-r));
goto out;
}
- r = sd_event_new(&event);
+ r = sd_event_new(&m->event);
if (r < 0) {
log_error("Could not create event: %s", strerror(-r));
goto out;
@@ -105,14 +256,30 @@ int main(int argc, char *argv[]) {
goto out;
}
- r = sd_event_add_io(event, &event_source, fd, events, &event_handler,
- event);
+ r = sd_event_add_io(m->event, &event_source, fd, events, &monitor_event_handler,
+ m);
if (r < 0) {
log_error("Could not add io event source: %s", strerror(-r));
goto out;
}
- if (all_configured()) {
+ r = sd_rtnl_open(&m->rtnl, RTMGRP_LINK);
+ if (r < 0) {
+ log_error("Could not create rtnl: %s", strerror(-r));
+ goto out;
+ }
+
+ r = sd_rtnl_attach_event(m->rtnl, m->event, 0);
+ if (r < 0) {
+ log_error("Could not attach event to rtnl: %s", strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_add_match(m->rtnl, RTM_NEWLINK, newlink_event_handler, m);
+ if (r < 0)
+ return r;
+
+ if (all_configured(m)) {
r = 0;
goto out;
}
@@ -121,7 +288,7 @@ int main(int argc, char *argv[]) {
"READY=1\n"
"STATUS=Waiting for network connections...");
- r = sd_event_loop(event);
+ r = sd_event_loop(m->event);
if (r < 0) {
log_error("Event loop failed: %s", strerror(-r));
goto out;
diff --git a/src/network/networkd-wait-online.conf b/src/network/networkd-wait-online.conf
new file mode 100644
index 0000000000..fa3d92fe69
--- /dev/null
+++ b/src/network/networkd-wait-online.conf
@@ -0,0 +1,11 @@
+# This file is part of systemd.
+#
+# 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.
+#
+# See networkd-wait-online.conf(5) for details
+
+[WaitOnline]
+#ExpectedLinks=
diff --git a/src/network/networkd-wait-online.h b/src/network/networkd-wait-online.h
new file mode 100644
index 0000000000..463df1616c
--- /dev/null
+++ b/src/network/networkd-wait-online.h
@@ -0,0 +1,41 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ 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/>.
+***/
+
+#pragma once
+
+#include "sd-event.h"
+#include "sd-rtnl.h"
+
+#include "util.h"
+
+typedef struct Manager {
+ sd_event *event;
+ sd_rtnl *rtnl;
+ char **expected_links;
+} Manager;
+
+void manager_free(Manager *m);
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
+#define _cleanup_manager_free_ _cleanup_(manager_freep)
+
+/* gperf lookup function */
+const struct ConfigPerfItem* wait_online_gperf_lookup(const char *key, unsigned length);
diff --git a/units/.gitignore b/units/.gitignore
index 94876ed71f..3bae4b46b6 100644
--- a/units/.gitignore
+++ b/units/.gitignore
@@ -39,6 +39,7 @@
/systemd-machined.service
/systemd-modules-load.service
/systemd-networkd.service
+/systemd-networkd-wait-online.service
/systemd-nspawn@.service
/systemd-poweroff.service
/systemd-quotacheck.service
diff --git a/units/systemd-networkd-wait-online.service.in b/units/systemd-networkd-wait-online.service.in
new file mode 100644
index 0000000000..a9bad7aa8f
--- /dev/null
+++ b/units/systemd-networkd-wait-online.service.in
@@ -0,0 +1,23 @@
+# This file is part of systemd.
+#
+# 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.
+
+[Unit]
+Description=Wait for Network to be Configured
+Documentation=man:systemd-networkd-wait-online.service(8)
+DefaultDependencies=no
+Conflicts=shutdown.target
+Requisite=systemd-networkd.service
+After=systemd-networkd.service
+Before=network-online.target
+
+[Service]
+Type=oneshot
+ExecStart=@rootlibexecdir@/systemd-networkd-wait-online
+RemainAfterExit=yes
+
+[Install]
+WantedBy=network-online.target
diff --git a/units/systemd-networkd.service.in b/units/systemd-networkd.service.in
index 7fd31cf667..8dd37ff769 100644
--- a/units/systemd-networkd.service.in
+++ b/units/systemd-networkd.service.in
@@ -23,4 +23,5 @@ CapabilityBoundingSet=CAP_NET_ADMIN CAP_NET_BIND_SERVICE CAP_NET_BROADCAST CAP_N
WatchdogSec=1min
[Install]
+Also=systemd-networkd-wait-online.service
WantedBy=multi-user.target