libsystemd-bus: rename to libsystemd

Documentation was updated to refer to either 'libsystemd' or 'sd-bus' in place
of libsystemd-bus.

1 files changed, 328 insertions, 0 deletions

diff --git a/src/libsystemd/bus-internal.h b/src/libsystemd/bus-internal.h
new file mode 100644
index 0000000000..7c92293771
--- /dev/null
+++ b/src/libsystemd/bus-internal.h
@@ -0,0 +1,328 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#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 <sys/socket.h>
+#include <sys/un.h>
+#include <netinet/in.h>
+#include <pthread.h>
+
+#include "hashmap.h"
+#include "prioq.h"
+#include "list.h"
+#include "util.h"
+#include "refcnt.h"
+
+#include "sd-bus.h"
+#include "bus-error.h"
+#include "bus-match.h"
+#include "bus-kernel.h"
+#include "kdbus.h"
+
+struct reply_callback {
+        sd_bus_message_handler_t callback;
+        void *userdata;
+        usec_t timeout;
+        uint64_t cookie;
+        unsigned prioq_idx;
+};
+
+struct filter_callback {
+        sd_bus_message_handler_t callback;
+        void *userdata;
+
+        unsigned last_iteration;
+
+        LIST_FIELDS(struct filter_callback, callbacks);
+};
+
+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);
+
+        bool object_manager;
+};
+
+struct node_callback {
+        struct node *node;
+
+        bool is_fallback;
+        sd_bus_message_handler_t callback;
+        void *userdata;
+
+        unsigned last_iteration;
+
+        LIST_FIELDS(struct node_callback, callbacks);
+};
+
+struct node_enumerator {
+        struct node *node;
+
+        sd_bus_node_enumerator_t callback;
+        void *userdata;
+
+        unsigned last_iteration;
+
+        LIST_FIELDS(struct node_enumerator, enumerators);
+};
+
+struct node_vtable {
+        struct node *node;
+
+        char *interface;
+        bool is_fallback;
+        const sd_bus_vtable *vtable;
+        void *userdata;
+        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;
+};
+
+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 manual_peer_interface: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;
+        Hashmap *reply_callbacks;
+        LIST_HEAD(struct filter_callback, filter_callbacks);
+
+        Hashmap *nodes;
+        Hashmap *vtable_methods;
+        Hashmap *vtable_properties;
+
+        union {
+                struct sockaddr sa;
+                struct sockaddr_un un;
+                struct sockaddr_in in;
+                struct sockaddr_in6 in6;
+        } sockaddr;
+        socklen_t sockaddr_size;
+
+        char *kernel;
+        char *machine;
+
+        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[NAME_MAX];
+
+        uint64_t creds_mask;
+
+        int *fds;
+        unsigned n_fds;
+
+        char *exec_path;
+        char **exec_argv;
+
+        uint64_t hello_cookie;
+        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;
+
+        sd_bus **default_bus_ptr;
+        pid_t tid;
+
+        struct kdbus_creds fake_creds;
+        char *fake_label;
+
+        char *cgroup_root;
+};
+
+#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_;
+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_bus_unref_ _unused_ sd_bus *_dont_destroy_##bus = sd_bus_ref(bus)