1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
22 #include <sys/epoll.h>
23 #include <sys/timerfd.h>
26 #include <dbus/dbus.h>
32 #include "dbus-unit.h"
34 #include "dbus-manager.h"
35 #include "dbus-service.h"
36 #include "dbus-socket.h"
37 #include "dbus-target.h"
38 #include "dbus-device.h"
39 #include "dbus-mount.h"
40 #include "dbus-automount.h"
41 #include "dbus-snapshot.h"
42 #include "dbus-swap.h"
43 #include "dbus-timer.h"
44 #include "dbus-path.h"
46 static const char bus_properties_interface[] = BUS_PROPERTIES_INTERFACE;
47 static const char bus_introspectable_interface[] = BUS_INTROSPECTABLE_INTERFACE;
49 const char *const bus_interface_table[] = {
50 "org.freedesktop.DBus.Properties", bus_properties_interface,
51 "org.freedesktop.DBus.Introspectable", bus_introspectable_interface,
52 "org.freedesktop.systemd1.Manager", bus_manager_interface,
53 "org.freedesktop.systemd1.Job", bus_job_interface,
54 "org.freedesktop.systemd1.Unit", bus_unit_interface,
55 "org.freedesktop.systemd1.Service", bus_service_interface,
56 "org.freedesktop.systemd1.Socket", bus_socket_interface,
57 "org.freedesktop.systemd1.Target", bus_target_interface,
58 "org.freedesktop.systemd1.Device", bus_device_interface,
59 "org.freedesktop.systemd1.Mount", bus_mount_interface,
60 "org.freedesktop.systemd1.Automount", bus_automount_interface,
61 "org.freedesktop.systemd1.Snapshot", bus_snapshot_interface,
62 "org.freedesktop.systemd1.Swap", bus_swap_interface,
63 "org.freedesktop.systemd1.Timer", bus_timer_interface,
64 "org.freedesktop.systemd1.Path", bus_path_interface,
68 static const char *error_to_dbus(int error);
70 static void api_bus_dispatch_status(DBusConnection *bus, DBusDispatchStatus status, void *data) {
79 assert(m->api_bus == bus);
81 m->request_api_bus_dispatch = status != DBUS_DISPATCH_COMPLETE;
84 static void system_bus_dispatch_status(DBusConnection *bus, DBusDispatchStatus status, void *data) {
93 assert(m->system_bus == bus);
95 m->request_system_bus_dispatch = status != DBUS_DISPATCH_COMPLETE;
98 static uint32_t bus_flags_to_events(DBusWatch *bus_watch) {
104 /* no watch flags for disabled watches */
105 if (!dbus_watch_get_enabled(bus_watch))
108 flags = dbus_watch_get_flags(bus_watch);
110 if (flags & DBUS_WATCH_READABLE)
112 if (flags & DBUS_WATCH_WRITABLE)
115 return events | EPOLLHUP | EPOLLERR;
118 static unsigned events_to_bus_flags(uint32_t events) {
121 if (events & EPOLLIN)
122 flags |= DBUS_WATCH_READABLE;
123 if (events & EPOLLOUT)
124 flags |= DBUS_WATCH_WRITABLE;
125 if (events & EPOLLHUP)
126 flags |= DBUS_WATCH_HANGUP;
127 if (events & EPOLLERR)
128 flags |= DBUS_WATCH_ERROR;
133 void bus_watch_event(Manager *m, Watch *w, int events) {
137 /* This is called by the event loop whenever there is
138 * something happening on D-Bus' file handles. */
140 if (!dbus_watch_get_enabled(w->data.bus_watch))
143 dbus_watch_handle(w->data.bus_watch, events_to_bus_flags(events));
146 static dbus_bool_t bus_add_watch(DBusWatch *bus_watch, void *data) {
149 struct epoll_event ev;
154 if (!(w = new0(Watch, 1)))
157 w->fd = dbus_watch_get_unix_fd(bus_watch);
158 w->type = WATCH_DBUS_WATCH;
159 w->data.bus_watch = bus_watch;
162 ev.events = bus_flags_to_events(bus_watch);
165 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, w->fd, &ev) < 0) {
167 if (errno != EEXIST) {
172 /* Hmm, bloody D-Bus creates multiple watches on the
173 * same fd. epoll() does not like that. As a dirty
174 * hack we simply dup() the fd and hence get a second
175 * one we can safely add to the epoll(). */
177 if ((w->fd = dup(w->fd)) < 0) {
182 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, w->fd, &ev) < 0) {
184 close_nointr_nofail(w->fd);
188 w->fd_is_dupped = true;
191 dbus_watch_set_data(bus_watch, w, NULL);
196 static void bus_remove_watch(DBusWatch *bus_watch, void *data) {
203 if (!(w = dbus_watch_get_data(bus_watch)))
206 assert(w->type == WATCH_DBUS_WATCH);
207 assert_se(epoll_ctl(m->epoll_fd, EPOLL_CTL_DEL, w->fd, NULL) >= 0);
210 close_nointr_nofail(w->fd);
215 static void bus_toggle_watch(DBusWatch *bus_watch, void *data) {
218 struct epoll_event ev;
223 assert_se(w = dbus_watch_get_data(bus_watch));
224 assert(w->type == WATCH_DBUS_WATCH);
227 ev.events = bus_flags_to_events(bus_watch);
230 assert_se(epoll_ctl(m->epoll_fd, EPOLL_CTL_MOD, w->fd, &ev) == 0);
233 static int bus_timeout_arm(Manager *m, Watch *w) {
234 struct itimerspec its;
241 if (dbus_timeout_get_enabled(w->data.bus_timeout)) {
242 timespec_store(&its.it_value, dbus_timeout_get_interval(w->data.bus_timeout) * USEC_PER_MSEC);
243 its.it_interval = its.it_interval;
246 if (timerfd_settime(w->fd, 0, &its, NULL) < 0)
252 void bus_timeout_event(Manager *m, Watch *w, int events) {
256 /* This is called by the event loop whenever there is
257 * something happening on D-Bus' file handles. */
259 if (!(dbus_timeout_get_enabled(w->data.bus_timeout)))
262 dbus_timeout_handle(w->data.bus_timeout);
265 static dbus_bool_t bus_add_timeout(DBusTimeout *timeout, void *data) {
268 struct epoll_event ev;
273 if (!(w = new0(Watch, 1)))
276 if (!(w->fd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK|TFD_CLOEXEC)) < 0)
279 w->type = WATCH_DBUS_TIMEOUT;
280 w->data.bus_timeout = timeout;
282 if (bus_timeout_arm(m, w) < 0)
289 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, w->fd, &ev) < 0)
292 dbus_timeout_set_data(timeout, w, NULL);
298 close_nointr_nofail(w->fd);
304 static void bus_remove_timeout(DBusTimeout *timeout, void *data) {
311 if (!(w = dbus_timeout_get_data(timeout)))
314 assert(w->type == WATCH_DBUS_TIMEOUT);
315 assert_se(epoll_ctl(m->epoll_fd, EPOLL_CTL_DEL, w->fd, NULL) >= 0);
316 close_nointr_nofail(w->fd);
320 static void bus_toggle_timeout(DBusTimeout *timeout, void *data) {
328 assert_se(w = dbus_timeout_get_data(timeout));
329 assert(w->type == WATCH_DBUS_TIMEOUT);
331 if ((r = bus_timeout_arm(m, w)) < 0)
332 log_error("Failed to rearm timer: %s", strerror(-r));
335 static DBusHandlerResult api_bus_message_filter(DBusConnection *connection, DBusMessage *message, void *data) {
338 DBusMessage *reply = NULL;
344 dbus_error_init(&error);
346 /* log_debug("Got D-Bus request: %s.%s() on %s", */
347 /* dbus_message_get_interface(message), */
348 /* dbus_message_get_member(message), */
349 /* dbus_message_get_path(message)); */
351 if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected")) {
352 log_error("Warning! API D-Bus connection terminated.");
355 } else if (dbus_message_is_signal(message, DBUS_INTERFACE_DBUS, "NameOwnerChanged")) {
356 const char *name, *old_owner, *new_owner;
358 if (!dbus_message_get_args(message, &error,
359 DBUS_TYPE_STRING, &name,
360 DBUS_TYPE_STRING, &old_owner,
361 DBUS_TYPE_STRING, &new_owner,
363 log_error("Failed to parse NameOwnerChanged message: %s", error.message);
365 if (set_remove(m->subscribed, (char*) name))
366 log_debug("Subscription client vanished: %s (left: %u)", name, set_size(m->subscribed));
368 if (old_owner[0] == 0)
371 if (new_owner[0] == 0)
374 manager_dispatch_bus_name_owner_changed(m, name, old_owner, new_owner);
376 } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Activator", "ActivationRequest")) {
379 if (!dbus_message_get_args(message, &error,
380 DBUS_TYPE_STRING, &name,
382 log_error("Failed to parse ActivationRequest message: %s", error.message);
387 log_debug("Got D-Bus activation request for %s", name);
389 r = manager_load_unit(m, name, NULL, &u);
391 if (r >= 0 && u->meta.only_by_dependency)
395 r = manager_add_job(m, JOB_START, u, JOB_REPLACE, true, NULL);
398 const char *id, *text;
400 if (!(reply = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1.Activator", "ActivationFailure")))
403 id = error_to_dbus(r);
406 if (!dbus_message_set_destination(reply, DBUS_SERVICE_DBUS) ||
407 !dbus_message_append_args(reply,
408 DBUS_TYPE_STRING, &name,
409 DBUS_TYPE_STRING, &id,
410 DBUS_TYPE_STRING, &text,
415 /* On success we don't do anything, the service will be spwaned now */
419 dbus_error_free(&error);
422 if (!dbus_connection_send(connection, reply, NULL))
425 dbus_message_unref(reply);
428 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
432 dbus_message_unref(reply);
434 dbus_error_free(&error);
436 return DBUS_HANDLER_RESULT_NEED_MEMORY;
439 static DBusHandlerResult system_bus_message_filter(DBusConnection *connection, DBusMessage *message, void *data) {
447 dbus_error_init(&error);
449 /* log_debug("Got D-Bus request: %s.%s() on %s", */
450 /* dbus_message_get_interface(message), */
451 /* dbus_message_get_member(message), */
452 /* dbus_message_get_path(message)); */
454 if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected")) {
455 log_error("Warning! System D-Bus connection terminated.");
458 } if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Agent", "Released")) {
461 if (!dbus_message_get_args(message, &error,
462 DBUS_TYPE_STRING, &cgroup,
464 log_error("Failed to parse Released message: %s", error.message);
466 cgroup_notify_empty(m, cgroup);
469 dbus_error_free(&error);
470 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
473 unsigned bus_dispatch(Manager *m) {
476 if (m->queued_message) {
477 /* If we cannot get rid of this message we won't
478 * dispatch any D-Bus messages, so that we won't end
479 * up wanting to queue another message. */
481 if (!dbus_connection_send(m->api_bus, m->queued_message, NULL))
484 dbus_message_unref(m->queued_message);
485 m->queued_message = NULL;
488 if (m->request_api_bus_dispatch) {
489 if (dbus_connection_dispatch(m->api_bus) == DBUS_DISPATCH_COMPLETE)
490 m->request_api_bus_dispatch = false;
495 if (m->request_system_bus_dispatch) {
496 if (dbus_connection_dispatch(m->system_bus) == DBUS_DISPATCH_COMPLETE)
497 m->request_system_bus_dispatch = false;
505 static void request_name_pending_cb(DBusPendingCall *pending, void *userdata) {
509 dbus_error_init(&error);
511 assert_se(reply = dbus_pending_call_steal_reply(pending));
513 switch (dbus_message_get_type(reply)) {
515 case DBUS_MESSAGE_TYPE_ERROR:
517 assert_se(dbus_set_error_from_message(&error, reply));
518 log_warning("RequestName() failed: %s", error.message);
521 case DBUS_MESSAGE_TYPE_METHOD_RETURN: {
524 if (!dbus_message_get_args(reply,
526 DBUS_TYPE_UINT32, &r,
527 DBUS_TYPE_INVALID)) {
528 log_error("Failed to parse RequestName() reply: %s", error.message);
533 log_debug("Successfully acquired name.");
535 log_error("Name already owned.");
541 assert_not_reached("Invalid reply message");
544 dbus_message_unref(reply);
545 dbus_error_free(&error);
548 static int request_name(Manager *m) {
549 const char *name = "org.freedesktop.systemd1";
551 DBusMessage *message = NULL;
552 DBusPendingCall *pending = NULL;
554 if (!(message = dbus_message_new_method_call(
561 if (!dbus_message_append_args(
563 DBUS_TYPE_STRING, &name,
564 DBUS_TYPE_UINT32, &flags,
568 if (!dbus_connection_send_with_reply(m->api_bus, message, &pending, -1))
571 if (!dbus_pending_call_set_notify(pending, request_name_pending_cb, m, NULL))
574 dbus_message_unref(message);
575 dbus_pending_call_unref(pending);
577 /* We simple ask for the name and don't wait for it. Sooner or
578 * later we'll have it. */
584 dbus_pending_call_cancel(pending);
585 dbus_pending_call_unref(pending);
589 dbus_message_unref(message);
594 static void query_name_list_pending_cb(DBusPendingCall *pending, void *userdata) {
597 Manager *m = userdata;
601 dbus_error_init(&error);
603 assert_se(reply = dbus_pending_call_steal_reply(pending));
605 switch (dbus_message_get_type(reply)) {
607 case DBUS_MESSAGE_TYPE_ERROR:
609 assert_se(dbus_set_error_from_message(&error, reply));
610 log_warning("ListNames() failed: %s", error.message);
613 case DBUS_MESSAGE_TYPE_METHOD_RETURN: {
617 if ((r = bus_parse_strv(reply, &l)) < 0)
618 log_warning("Failed to parse ListNames() reply: %s", strerror(-r));
623 /* This is a bit hacky, we say the
624 * owner of the name is the name
625 * itself, because we don't want the
626 * extra traffic to figure out the
628 manager_dispatch_bus_name_owner_changed(m, *t, NULL, *t);
637 assert_not_reached("Invalid reply message");
640 dbus_message_unref(reply);
641 dbus_error_free(&error);
644 static int query_name_list(Manager *m) {
645 DBusMessage *message = NULL;
646 DBusPendingCall *pending = NULL;
648 /* Asks for the currently installed bus names */
650 if (!(message = dbus_message_new_method_call(
657 if (!dbus_connection_send_with_reply(m->api_bus, message, &pending, -1))
660 if (!dbus_pending_call_set_notify(pending, query_name_list_pending_cb, m, NULL))
663 dbus_message_unref(message);
664 dbus_pending_call_unref(pending);
666 /* We simple ask for the list and don't wait for it. Sooner or
667 * later we'll get it. */
673 dbus_pending_call_cancel(pending);
674 dbus_pending_call_unref(pending);
678 dbus_message_unref(message);
683 static int bus_setup_loop(Manager *m, DBusConnection *bus) {
687 dbus_connection_set_exit_on_disconnect(bus, FALSE);
689 if (!dbus_connection_set_watch_functions(bus, bus_add_watch, bus_remove_watch, bus_toggle_watch, m, NULL) ||
690 !dbus_connection_set_timeout_functions(bus, bus_add_timeout, bus_remove_timeout, bus_toggle_timeout, m, NULL))
696 int bus_init_system(Manager *m) {
703 dbus_error_init(&error);
708 if (m->running_as != MANAGER_SESSION && m->api_bus)
709 m->system_bus = m->api_bus;
711 if (!(m->system_bus = dbus_bus_get_private(DBUS_BUS_SYSTEM, &error))) {
712 log_debug("Failed to get system D-Bus connection, retrying later: %s", error.message);
713 dbus_error_free(&error);
717 dbus_connection_set_dispatch_status_function(m->system_bus, system_bus_dispatch_status, m, NULL);
718 m->request_system_bus_dispatch = true;
720 if ((r = bus_setup_loop(m, m->system_bus)) < 0) {
726 if (!dbus_connection_add_filter(m->system_bus, system_bus_message_filter, m, NULL)) {
731 dbus_bus_add_match(m->system_bus,
733 "interface='org.freedesktop.systemd1.Agent',"
734 "path='/org/freedesktop/systemd1/agent'",
737 if (dbus_error_is_set(&error)) {
738 log_error("Failed to register match: %s", error.message);
739 dbus_error_free(&error);
744 log_debug("Successfully connected to system D-Bus bus %s as %s",
745 strnull((id = dbus_connection_get_server_id(m->system_bus))),
746 strnull(dbus_bus_get_unique_name(m->system_bus)));
752 int bus_init_api(Manager *m) {
759 dbus_error_init(&error);
764 if (m->name_data_slot < 0)
765 if (!dbus_pending_call_allocate_data_slot(&m->name_data_slot))
768 if (m->running_as != MANAGER_SESSION && m->system_bus)
769 m->api_bus = m->system_bus;
771 if (!(m->api_bus = dbus_bus_get_private(m->running_as == MANAGER_SESSION ? DBUS_BUS_SESSION : DBUS_BUS_SYSTEM, &error))) {
772 log_debug("Failed to get API D-Bus connection, retrying later: %s", error.message);
773 dbus_error_free(&error);
777 dbus_connection_set_dispatch_status_function(m->api_bus, api_bus_dispatch_status, m, NULL);
778 m->request_api_bus_dispatch = true;
780 if ((r = bus_setup_loop(m, m->api_bus)) < 0) {
786 if (!dbus_connection_register_object_path(m->api_bus, "/org/freedesktop/systemd1", &bus_manager_vtable, m) ||
787 !dbus_connection_register_fallback(m->api_bus, "/org/freedesktop/systemd1/unit", &bus_unit_vtable, m) ||
788 !dbus_connection_register_fallback(m->api_bus, "/org/freedesktop/systemd1/job", &bus_job_vtable, m) ||
789 !dbus_connection_add_filter(m->api_bus, api_bus_message_filter, m, NULL)) {
794 /* Get NameOwnerChange messages */
795 dbus_bus_add_match(m->api_bus,
797 "sender='"DBUS_SERVICE_DBUS"',"
798 "interface='"DBUS_INTERFACE_DBUS"',"
799 "path='"DBUS_PATH_DBUS"'",
802 if (dbus_error_is_set(&error)) {
803 log_error("Failed to register match: %s", error.message);
804 dbus_error_free(&error);
809 /* Get activation requests */
810 dbus_bus_add_match(m->api_bus,
812 "sender='"DBUS_SERVICE_DBUS"',"
813 "interface='org.freedesktop.systemd1.Activator',"
814 "path='"DBUS_PATH_DBUS"'",
817 if (dbus_error_is_set(&error)) {
818 log_error("Failed to register match: %s", error.message);
819 dbus_error_free(&error);
824 if ((r = request_name(m)) < 0) {
829 if ((r = query_name_list(m)) < 0) {
834 log_debug("Successfully connected to API D-Bus bus %s as %s",
835 strnull((id = dbus_connection_get_server_id(m->api_bus))),
836 strnull(dbus_bus_get_unique_name(m->api_bus)));
840 if (!(m->subscribed = set_new(string_hash_func, string_compare_func)))
846 void bus_done_api(Manager *m) {
850 if (m->system_bus == m->api_bus)
851 m->system_bus = NULL;
853 dbus_connection_set_dispatch_status_function(m->api_bus, NULL, NULL, NULL);
854 dbus_connection_flush(m->api_bus);
855 dbus_connection_close(m->api_bus);
856 dbus_connection_unref(m->api_bus);
863 while ((c = set_steal_first(m->subscribed)))
866 set_free(m->subscribed);
867 m->subscribed = NULL;
870 if (m->name_data_slot >= 0)
871 dbus_pending_call_free_data_slot(&m->name_data_slot);
873 if (m->queued_message) {
874 dbus_message_unref(m->queued_message);
875 m->queued_message = NULL;
879 void bus_done_system(Manager *m) {
882 if (m->system_bus == m->api_bus)
886 dbus_connection_set_dispatch_status_function(m->system_bus, NULL, NULL, NULL);
887 dbus_connection_flush(m->system_bus);
888 dbus_connection_close(m->system_bus);
889 dbus_connection_unref(m->system_bus);
890 m->system_bus = NULL;
894 static void query_pid_pending_cb(DBusPendingCall *pending, void *userdata) {
895 Manager *m = userdata;
900 dbus_error_init(&error);
902 assert_se(name = dbus_pending_call_get_data(pending, m->name_data_slot));
903 assert_se(reply = dbus_pending_call_steal_reply(pending));
905 switch (dbus_message_get_type(reply)) {
907 case DBUS_MESSAGE_TYPE_ERROR:
909 assert_se(dbus_set_error_from_message(&error, reply));
910 log_warning("GetConnectionUnixProcessID() failed: %s", error.message);
913 case DBUS_MESSAGE_TYPE_METHOD_RETURN: {
916 if (!dbus_message_get_args(reply,
918 DBUS_TYPE_UINT32, &r,
919 DBUS_TYPE_INVALID)) {
920 log_error("Failed to parse GetConnectionUnixProcessID() reply: %s", error.message);
924 manager_dispatch_bus_query_pid_done(m, name, (pid_t) r);
929 assert_not_reached("Invalid reply message");
932 dbus_message_unref(reply);
933 dbus_error_free(&error);
936 int bus_query_pid(Manager *m, const char *name) {
937 DBusMessage *message = NULL;
938 DBusPendingCall *pending = NULL;
944 if (!(message = dbus_message_new_method_call(
948 "GetConnectionUnixProcessID")))
951 if (!(dbus_message_append_args(
953 DBUS_TYPE_STRING, &name,
957 if (!dbus_connection_send_with_reply(m->api_bus, message, &pending, -1))
960 if (!(n = strdup(name)))
963 if (!dbus_pending_call_set_data(pending, m->name_data_slot, n, free))
968 if (!dbus_pending_call_set_notify(pending, query_pid_pending_cb, m, NULL))
971 dbus_message_unref(message);
972 dbus_pending_call_unref(pending);
980 dbus_pending_call_cancel(pending);
981 dbus_pending_call_unref(pending);
985 dbus_message_unref(message);
990 DBusHandlerResult bus_default_message_handler(Manager *m, DBusMessage *message, const char*introspection, const BusProperty *properties) {
992 DBusMessage *reply = NULL;
998 dbus_error_init(&error);
1000 if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect") && introspection) {
1002 if (!(reply = dbus_message_new_method_return(message)))
1005 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID))
1008 } else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Properties", "Get") && properties) {
1009 const char *interface, *property;
1010 const BusProperty *p;
1012 if (!dbus_message_get_args(
1015 DBUS_TYPE_STRING, &interface,
1016 DBUS_TYPE_STRING, &property,
1018 return bus_send_error_reply(m, message, &error, -EINVAL);
1020 for (p = properties; p->property; p++)
1021 if (streq(p->interface, interface) && streq(p->property, property))
1025 DBusMessageIter iter, sub;
1027 if (!(reply = dbus_message_new_method_return(message)))
1030 dbus_message_iter_init_append(reply, &iter);
1032 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_VARIANT, p->signature, &sub))
1035 if ((r = p->append(m, &sub, property, (void*) p->data)) < 0) {
1040 dbus_message_unref(reply);
1041 return bus_send_error_reply(m, message, NULL, r);
1044 if (!dbus_message_iter_close_container(&iter, &sub))
1047 } else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Properties", "GetAll") && properties) {
1048 const char *interface;
1049 const BusProperty *p;
1050 DBusMessageIter iter, sub, sub2, sub3;
1053 if (!dbus_message_get_args(
1056 DBUS_TYPE_STRING, &interface,
1058 return bus_send_error_reply(m, message, &error, -EINVAL);
1060 if (!(reply = dbus_message_new_method_return(message)))
1063 dbus_message_iter_init_append(reply, &iter);
1065 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "{sv}", &sub))
1068 for (p = properties; p->property; p++) {
1069 if (!streq(p->interface, interface))
1072 if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_DICT_ENTRY, NULL, &sub2) ||
1073 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &p->property) ||
1074 !dbus_message_iter_open_container(&sub2, DBUS_TYPE_VARIANT, p->signature, &sub3))
1077 if ((r = p->append(m, &sub3, p->property, (void*) p->data)) < 0) {
1082 dbus_message_unref(reply);
1083 return bus_send_error_reply(m, message, NULL, r);
1086 if (!dbus_message_iter_close_container(&sub2, &sub3) ||
1087 !dbus_message_iter_close_container(&sub, &sub2))
1093 if (!dbus_message_iter_close_container(&iter, &sub))
1098 if (!dbus_connection_send(m->api_bus, reply, NULL))
1101 dbus_message_unref(reply);
1102 return DBUS_HANDLER_RESULT_HANDLED;
1105 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1109 dbus_message_unref(reply);
1111 dbus_error_free(&error);
1113 return DBUS_HANDLER_RESULT_NEED_MEMORY;
1116 static const char *error_to_dbus(int error) {
1121 return DBUS_ERROR_INVALID_ARGS;
1124 return DBUS_ERROR_NO_MEMORY;
1128 return DBUS_ERROR_ACCESS_DENIED;
1131 return DBUS_ERROR_UNIX_PROCESS_ID_UNKNOWN;
1134 return DBUS_ERROR_FILE_NOT_FOUND;
1137 return DBUS_ERROR_FILE_EXISTS;
1140 return DBUS_ERROR_TIMEOUT;
1143 return DBUS_ERROR_IO_ERROR;
1148 return DBUS_ERROR_DISCONNECTED;
1151 return DBUS_ERROR_FAILED;
1154 DBusHandlerResult bus_send_error_reply(Manager *m, DBusMessage *message, DBusError *bus_error, int error) {
1155 DBusMessage *reply = NULL;
1156 const char *name, *text;
1158 if (bus_error && dbus_error_is_set(bus_error)) {
1159 name = bus_error->name;
1160 text = bus_error->message;
1162 name = error_to_dbus(error);
1163 text = strerror(-error);
1166 if (!(reply = dbus_message_new_error(message, name, text)))
1169 if (!dbus_connection_send(m->api_bus, reply, NULL))
1172 dbus_message_unref(reply);
1175 dbus_error_free(bus_error);
1177 return DBUS_HANDLER_RESULT_HANDLED;
1181 dbus_message_unref(reply);
1184 dbus_error_free(bus_error);
1186 return DBUS_HANDLER_RESULT_NEED_MEMORY;
1189 int bus_property_append_string(Manager *m, DBusMessageIter *i, const char *property, void *data) {
1190 const char *t = data;
1199 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
1205 int bus_property_append_strv(Manager *m, DBusMessageIter *i, const char *property, void *data) {
1206 DBusMessageIter sub;
1213 if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "s", &sub))
1217 if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, t))
1220 if (!dbus_message_iter_close_container(i, &sub))
1226 int bus_property_append_bool(Manager *m, DBusMessageIter *i, const char *property, void *data) {
1237 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &db))
1243 int bus_property_append_uint64(Manager *m, DBusMessageIter *i, const char *property, void *data) {
1249 /* Let's ensure that pid_t is actually 64bit, and hence this
1250 * function can be used for usec_t */
1251 assert_cc(sizeof(uint64_t) == sizeof(usec_t));
1253 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT64, data))
1259 int bus_property_append_uint32(Manager *m, DBusMessageIter *i, const char *property, void *data) {
1265 /* Let's ensure that pid_t and mode_t is actually 32bit, and
1266 * hence this function can be used for pid_t/mode_t */
1267 assert_cc(sizeof(uint32_t) == sizeof(pid_t));
1268 assert_cc(sizeof(uint32_t) == sizeof(mode_t));
1269 assert_cc(sizeof(uint32_t) == sizeof(unsigned));
1271 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, data))
1277 int bus_property_append_int32(Manager *m, DBusMessageIter *i, const char *property, void *data) {
1283 assert_cc(sizeof(int32_t) == sizeof(int));
1285 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_INT32, data))
1291 int bus_parse_strv(DBusMessage *m, char ***_l) {
1292 DBusMessageIter iter, sub;
1293 unsigned n = 0, i = 0;
1299 if (!dbus_message_iter_init(m, &iter) ||
1300 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
1301 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRING)
1304 dbus_message_iter_recurse(&iter, &sub);
1306 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
1308 dbus_message_iter_next(&sub);
1311 if (!(l = new(char*, n+1)))
1314 assert_se(dbus_message_iter_init(m, &iter));
1315 dbus_message_iter_recurse(&iter, &sub);
1317 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
1320 assert_se(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING);
1321 dbus_message_iter_get_basic(&sub, &s);
1323 if (!(l[i++] = strdup(s))) {
1328 dbus_message_iter_next(&sub);