1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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 Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
24 #include "selinux-access.h"
25 #include "cgroup-util.h"
27 #include "path-util.h"
29 #include "bus-errors.h"
31 #include "dbus-manager.h"
32 #include "dbus-unit.h"
34 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_load_state, unit_load_state, UnitLoadState);
35 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_job_mode, job_mode, JobMode);
36 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_failure_action, failure_action, FailureAction);
38 static int property_get_names(
41 const char *interface,
43 sd_bus_message *reply,
45 sd_bus_error *error) {
56 r = sd_bus_message_open_container(reply, 'a', "s");
60 SET_FOREACH(t, u->names, i) {
61 r = sd_bus_message_append(reply, "s", t);
66 return sd_bus_message_close_container(reply);
69 static int property_get_following(
72 const char *interface,
74 sd_bus_message *reply,
76 sd_bus_error *error) {
78 Unit *u = userdata, *f;
84 f = unit_following(u);
85 return sd_bus_message_append(reply, "s", f ? f->id : "");
88 static int property_get_dependencies(
91 const char *interface,
93 sd_bus_message *reply,
95 sd_bus_error *error) {
97 Set *s = *(Set**) userdata;
105 r = sd_bus_message_open_container(reply, 'a', "s");
109 SET_FOREACH(u, s, j) {
110 r = sd_bus_message_append(reply, "s", u->id);
115 return sd_bus_message_close_container(reply);
118 static int property_get_description(
121 const char *interface,
122 const char *property,
123 sd_bus_message *reply,
125 sd_bus_error *error) {
133 return sd_bus_message_append(reply, "s", unit_description(u));
136 static int property_get_active_state(
139 const char *interface,
140 const char *property,
141 sd_bus_message *reply,
143 sd_bus_error *error) {
151 return sd_bus_message_append(reply, "s", unit_active_state_to_string(unit_active_state(u)));
154 static int property_get_sub_state(
157 const char *interface,
158 const char *property,
159 sd_bus_message *reply,
161 sd_bus_error *error) {
169 return sd_bus_message_append(reply, "s", unit_sub_state_to_string(u));
172 static int property_get_unit_file_state(
175 const char *interface,
176 const char *property,
177 sd_bus_message *reply,
179 sd_bus_error *error) {
187 return sd_bus_message_append(reply, "s", unit_file_state_to_string(unit_get_unit_file_state(u)));
190 static int property_get_can_start(
193 const char *interface,
194 const char *property,
195 sd_bus_message *reply,
197 sd_bus_error *error) {
205 return sd_bus_message_append(reply, "b", unit_can_start(u) && !u->refuse_manual_start);
208 static int property_get_can_stop(
211 const char *interface,
212 const char *property,
213 sd_bus_message *reply,
215 sd_bus_error *error) {
223 /* On the lower levels we assume that every unit we can start
224 * we can also stop */
226 return sd_bus_message_append(reply, "b", unit_can_start(u) && !u->refuse_manual_stop);
229 static int property_get_can_reload(
232 const char *interface,
233 const char *property,
234 sd_bus_message *reply,
236 sd_bus_error *error) {
244 return sd_bus_message_append(reply, "b", unit_can_reload(u));
247 static int property_get_can_isolate(
250 const char *interface,
251 const char *property,
252 sd_bus_message *reply,
254 sd_bus_error *error) {
262 return sd_bus_message_append(reply, "b", unit_can_isolate(u) && !u->refuse_manual_start);
265 static int property_get_job(
268 const char *interface,
269 const char *property,
270 sd_bus_message *reply,
272 sd_bus_error *error) {
274 _cleanup_free_ char *p = NULL;
282 return sd_bus_message_append(reply, "(uo)", 0, "/");
284 p = job_dbus_path(u->job);
288 return sd_bus_message_append(reply, "(uo)", u->job->id, p);
291 static int property_get_need_daemon_reload(
294 const char *interface,
295 const char *property,
296 sd_bus_message *reply,
298 sd_bus_error *error) {
306 return sd_bus_message_append(reply, "b", unit_need_daemon_reload(u));
309 static int property_get_conditions(
312 const char *interface,
313 const char *property,
314 sd_bus_message *reply,
316 sd_bus_error *error) {
326 r = sd_bus_message_open_container(reply, 'a', "(sbbsi)");
330 LIST_FOREACH(conditions, c, u->conditions) {
331 r = sd_bus_message_append(reply, "(sbbsi)",
332 condition_type_to_string(c->type),
333 c->trigger, c->negate,
334 c->parameter, c->state);
340 return sd_bus_message_close_container(reply);
343 static int property_get_load_error(
346 const char *interface,
347 const char *property,
348 sd_bus_message *reply,
350 sd_bus_error *error) {
352 _cleanup_bus_error_free_ sd_bus_error e = SD_BUS_ERROR_NULL;
359 if (u->load_error != 0)
360 sd_bus_error_set_errno(&e, u->load_error);
362 return sd_bus_message_append(reply, "(ss)", e.name, e.message);
365 int bus_unit_method_start_generic(sd_bus *bus, sd_bus_message *message, Unit *u, JobType job_type, bool reload_if_possible, sd_bus_error *error) {
373 assert(job_type >= 0 && job_type < _JOB_TYPE_MAX);
375 r = sd_bus_message_read(message, "s", &smode);
379 mode = job_mode_from_string(smode);
381 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job mode %s invalid", smode);
383 return bus_unit_queue_job(bus, message, u, job_type, mode, reload_if_possible, error);
386 static int method_start(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
387 return bus_unit_method_start_generic(bus, message, userdata, JOB_START, false, error);
390 static int method_stop(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
391 return bus_unit_method_start_generic(bus, message, userdata, JOB_STOP, false, error);
394 static int method_reload(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
395 return bus_unit_method_start_generic(bus, message, userdata, JOB_RELOAD, false, error);
398 static int method_restart(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
399 return bus_unit_method_start_generic(bus, message, userdata, JOB_RESTART, false, error);
402 static int method_try_restart(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
403 return bus_unit_method_start_generic(bus, message, userdata, JOB_TRY_RESTART, false, error);
406 static int method_reload_or_restart(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
407 return bus_unit_method_start_generic(bus, message, userdata, JOB_RESTART, true, error);
410 static int method_reload_or_try_restart(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
411 return bus_unit_method_start_generic(bus, message, userdata, JOB_TRY_RESTART, true, error);
414 int bus_unit_method_kill(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
425 r = bus_verify_manage_unit_async_for_kill(u->manager, message, error);
429 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
431 r = sd_bus_message_read(message, "si", &swho, &signo);
438 who = kill_who_from_string(swho);
440 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid who argument %s", swho);
443 if (signo <= 0 || signo >= _NSIG)
444 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Signal number out of range.");
446 r = mac_selinux_unit_access_check(u, message, "stop", error);
450 r = unit_kill(u, who, signo, error);
454 return sd_bus_reply_method_return(message, NULL);
457 int bus_unit_method_reset_failed(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
465 r = bus_verify_manage_unit_async(u->manager, message, error);
469 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
471 r = mac_selinux_unit_access_check(u, message, "reload", error);
475 unit_reset_failed(u);
477 return sd_bus_reply_method_return(message, NULL);
480 int bus_unit_method_set_properties(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
488 r = bus_verify_manage_unit_async(u->manager, message, error);
492 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
494 r = sd_bus_message_read(message, "b", &runtime);
498 r = mac_selinux_unit_access_check(u, message, "start", error);
502 r = bus_unit_set_properties(u, message, runtime ? UNIT_RUNTIME : UNIT_PERSISTENT, true, error);
506 return sd_bus_reply_method_return(message, NULL);
509 const sd_bus_vtable bus_unit_vtable[] = {
510 SD_BUS_VTABLE_START(0),
512 SD_BUS_PROPERTY("Id", "s", NULL, offsetof(Unit, id), SD_BUS_VTABLE_PROPERTY_CONST),
513 SD_BUS_PROPERTY("Names", "as", property_get_names, 0, SD_BUS_VTABLE_PROPERTY_CONST),
514 SD_BUS_PROPERTY("Following", "s", property_get_following, 0, 0),
515 SD_BUS_PROPERTY("Requires", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRES]), SD_BUS_VTABLE_PROPERTY_CONST),
516 SD_BUS_PROPERTY("RequiresOverridable", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRES_OVERRIDABLE]), SD_BUS_VTABLE_PROPERTY_CONST),
517 SD_BUS_PROPERTY("Requisite", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUISITE]), SD_BUS_VTABLE_PROPERTY_CONST),
518 SD_BUS_PROPERTY("RequisiteOverridable", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUISITE_OVERRIDABLE]), SD_BUS_VTABLE_PROPERTY_CONST),
519 SD_BUS_PROPERTY("Wants", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_WANTS]), SD_BUS_VTABLE_PROPERTY_CONST),
520 SD_BUS_PROPERTY("BindsTo", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BINDS_TO]), SD_BUS_VTABLE_PROPERTY_CONST),
521 SD_BUS_PROPERTY("PartOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_PART_OF]), SD_BUS_VTABLE_PROPERTY_CONST),
522 SD_BUS_PROPERTY("RequiredBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
523 SD_BUS_PROPERTY("RequiredByOverridable", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRED_BY_OVERRIDABLE]), SD_BUS_VTABLE_PROPERTY_CONST),
524 SD_BUS_PROPERTY("WantedBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_WANTED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
525 SD_BUS_PROPERTY("BoundBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BOUND_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
526 SD_BUS_PROPERTY("ConsistsOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONSISTS_OF]), SD_BUS_VTABLE_PROPERTY_CONST),
527 SD_BUS_PROPERTY("Conflicts", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONFLICTS]), SD_BUS_VTABLE_PROPERTY_CONST),
528 SD_BUS_PROPERTY("ConflictedBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONFLICTED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
529 SD_BUS_PROPERTY("Before", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BEFORE]), SD_BUS_VTABLE_PROPERTY_CONST),
530 SD_BUS_PROPERTY("After", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_AFTER]), SD_BUS_VTABLE_PROPERTY_CONST),
531 SD_BUS_PROPERTY("OnFailure", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_ON_FAILURE]), SD_BUS_VTABLE_PROPERTY_CONST),
532 SD_BUS_PROPERTY("Triggers", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_TRIGGERS]), SD_BUS_VTABLE_PROPERTY_CONST),
533 SD_BUS_PROPERTY("TriggeredBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_TRIGGERED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
534 SD_BUS_PROPERTY("PropagatesReloadTo", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_PROPAGATES_RELOAD_TO]), SD_BUS_VTABLE_PROPERTY_CONST),
535 SD_BUS_PROPERTY("ReloadPropagatedFrom", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_RELOAD_PROPAGATED_FROM]), SD_BUS_VTABLE_PROPERTY_CONST),
536 SD_BUS_PROPERTY("JoinsNamespaceOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_JOINS_NAMESPACE_OF]), SD_BUS_VTABLE_PROPERTY_CONST),
537 SD_BUS_PROPERTY("RequiresMountsFor", "as", NULL, offsetof(Unit, requires_mounts_for), SD_BUS_VTABLE_PROPERTY_CONST),
538 SD_BUS_PROPERTY("Documentation", "as", NULL, offsetof(Unit, documentation), SD_BUS_VTABLE_PROPERTY_CONST),
539 SD_BUS_PROPERTY("Description", "s", property_get_description, 0, SD_BUS_VTABLE_PROPERTY_CONST),
540 SD_BUS_PROPERTY("LoadState", "s", property_get_load_state, offsetof(Unit, load_state), SD_BUS_VTABLE_PROPERTY_CONST),
541 SD_BUS_PROPERTY("ActiveState", "s", property_get_active_state, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
542 SD_BUS_PROPERTY("SubState", "s", property_get_sub_state, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
543 SD_BUS_PROPERTY("FragmentPath", "s", NULL, offsetof(Unit, fragment_path), SD_BUS_VTABLE_PROPERTY_CONST),
544 SD_BUS_PROPERTY("SourcePath", "s", NULL, offsetof(Unit, source_path), SD_BUS_VTABLE_PROPERTY_CONST),
545 SD_BUS_PROPERTY("DropInPaths", "as", NULL, offsetof(Unit, dropin_paths), SD_BUS_VTABLE_PROPERTY_CONST),
546 SD_BUS_PROPERTY("UnitFileState", "s", property_get_unit_file_state, 0, 0),
547 BUS_PROPERTY_DUAL_TIMESTAMP("InactiveExitTimestamp", offsetof(Unit, inactive_exit_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
548 BUS_PROPERTY_DUAL_TIMESTAMP("ActiveEnterTimestamp", offsetof(Unit, active_enter_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
549 BUS_PROPERTY_DUAL_TIMESTAMP("ActiveExitTimestamp", offsetof(Unit, active_exit_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
550 BUS_PROPERTY_DUAL_TIMESTAMP("InactiveEnterTimestamp", offsetof(Unit, inactive_enter_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
551 SD_BUS_PROPERTY("CanStart", "b", property_get_can_start, 0, SD_BUS_VTABLE_PROPERTY_CONST),
552 SD_BUS_PROPERTY("CanStop", "b", property_get_can_stop, 0, SD_BUS_VTABLE_PROPERTY_CONST),
553 SD_BUS_PROPERTY("CanReload", "b", property_get_can_reload, 0, SD_BUS_VTABLE_PROPERTY_CONST),
554 SD_BUS_PROPERTY("CanIsolate", "b", property_get_can_isolate, 0, SD_BUS_VTABLE_PROPERTY_CONST),
555 SD_BUS_PROPERTY("Job", "(uo)", property_get_job, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
556 SD_BUS_PROPERTY("StopWhenUnneeded", "b", bus_property_get_bool, offsetof(Unit, stop_when_unneeded), SD_BUS_VTABLE_PROPERTY_CONST),
557 SD_BUS_PROPERTY("RefuseManualStart", "b", bus_property_get_bool, offsetof(Unit, refuse_manual_start), SD_BUS_VTABLE_PROPERTY_CONST),
558 SD_BUS_PROPERTY("RefuseManualStop", "b", bus_property_get_bool, offsetof(Unit, refuse_manual_stop), SD_BUS_VTABLE_PROPERTY_CONST),
559 SD_BUS_PROPERTY("AllowIsolate", "b", bus_property_get_bool, offsetof(Unit, allow_isolate), SD_BUS_VTABLE_PROPERTY_CONST),
560 SD_BUS_PROPERTY("DefaultDependencies", "b", bus_property_get_bool, offsetof(Unit, default_dependencies), SD_BUS_VTABLE_PROPERTY_CONST),
561 SD_BUS_PROPERTY("OnFailureJobMode", "s", property_get_job_mode, offsetof(Unit, on_failure_job_mode), SD_BUS_VTABLE_PROPERTY_CONST),
562 SD_BUS_PROPERTY("IgnoreOnIsolate", "b", bus_property_get_bool, offsetof(Unit, ignore_on_isolate), SD_BUS_VTABLE_PROPERTY_CONST),
563 SD_BUS_PROPERTY("IgnoreOnSnapshot", "b", bus_property_get_bool, offsetof(Unit, ignore_on_snapshot), SD_BUS_VTABLE_PROPERTY_CONST),
564 SD_BUS_PROPERTY("NeedDaemonReload", "b", property_get_need_daemon_reload, 0, SD_BUS_VTABLE_PROPERTY_CONST),
565 SD_BUS_PROPERTY("JobTimeoutUSec", "t", bus_property_get_usec, offsetof(Unit, job_timeout), SD_BUS_VTABLE_PROPERTY_CONST),
566 SD_BUS_PROPERTY("JobTimeoutAction", "s", property_get_failure_action, offsetof(Unit, job_timeout_action), SD_BUS_VTABLE_PROPERTY_CONST),
567 SD_BUS_PROPERTY("JobTimeoutRebootArgument", "s", NULL, offsetof(Unit, job_timeout_reboot_arg), SD_BUS_VTABLE_PROPERTY_CONST),
568 SD_BUS_PROPERTY("ConditionResult", "b", bus_property_get_bool, offsetof(Unit, condition_result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
569 BUS_PROPERTY_DUAL_TIMESTAMP("ConditionTimestamp", offsetof(Unit, condition_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
570 SD_BUS_PROPERTY("Conditions", "a(sbbsi)", property_get_conditions, 0, 0),
571 SD_BUS_PROPERTY("LoadError", "(ss)", property_get_load_error, 0, SD_BUS_VTABLE_PROPERTY_CONST),
572 SD_BUS_PROPERTY("Transient", "b", bus_property_get_bool, offsetof(Unit, transient), SD_BUS_VTABLE_PROPERTY_CONST),
574 SD_BUS_METHOD("Start", "s", "o", method_start, 0),
575 SD_BUS_METHOD("Stop", "s", "o", method_stop, 0),
576 SD_BUS_METHOD("Reload", "s", "o", method_reload, 0),
577 SD_BUS_METHOD("Restart", "s", "o", method_restart, 0),
578 SD_BUS_METHOD("TryRestart", "s", "o", method_try_restart, 0),
579 SD_BUS_METHOD("ReloadOrRestart", "s", "o", method_reload_or_restart, 0),
580 SD_BUS_METHOD("ReloadOrTryRestart", "s", "o", method_reload_or_try_restart, 0),
581 SD_BUS_METHOD("Kill", "si", NULL, bus_unit_method_kill, 0),
582 SD_BUS_METHOD("ResetFailed", NULL, NULL, bus_unit_method_reset_failed, 0),
583 SD_BUS_METHOD("SetProperties", "ba(sv)", NULL, bus_unit_method_set_properties, 0),
588 static int property_get_slice(
591 const char *interface,
592 const char *property,
593 sd_bus_message *reply,
595 sd_bus_error *error) {
603 return sd_bus_message_append(reply, "s", unit_slice_name(u));
606 const sd_bus_vtable bus_unit_cgroup_vtable[] = {
607 SD_BUS_VTABLE_START(0),
608 SD_BUS_PROPERTY("Slice", "s", property_get_slice, 0, 0),
609 SD_BUS_PROPERTY("ControlGroup", "s", NULL, offsetof(Unit, cgroup_path), 0),
613 static int send_new_signal(sd_bus *bus, void *userdata) {
614 _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
615 _cleanup_free_ char *p = NULL;
622 p = unit_dbus_path(u);
626 r = sd_bus_message_new_signal(
629 "/org/freedesktop/systemd1",
630 "org.freedesktop.systemd1.Manager",
635 r = sd_bus_message_append(m, "so", u->id, p);
639 return sd_bus_send(bus, m, NULL);
642 static int send_changed_signal(sd_bus *bus, void *userdata) {
643 _cleanup_free_ char *p = NULL;
650 p = unit_dbus_path(u);
654 /* Send a properties changed signal. First for the specific
655 * type, then for the generic unit. The clients may rely on
656 * this order to get atomic behavior if needed. */
658 r = sd_bus_emit_properties_changed_strv(
660 UNIT_VTABLE(u)->bus_interface,
665 return sd_bus_emit_properties_changed_strv(
667 "org.freedesktop.systemd1.Unit",
671 void bus_unit_send_change_signal(Unit *u) {
675 if (u->in_dbus_queue) {
676 LIST_REMOVE(dbus_queue, u->manager->dbus_unit_queue, u);
677 u->in_dbus_queue = false;
683 r = bus_foreach_bus(u->manager, NULL, u->sent_dbus_new_signal ? send_changed_signal : send_new_signal, u);
685 log_debug("Failed to send unit change signal for %s: %s", u->id, strerror(-r));
687 u->sent_dbus_new_signal = true;
690 static int send_removed_signal(sd_bus *bus, void *userdata) {
691 _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
692 _cleanup_free_ char *p = NULL;
699 p = unit_dbus_path(u);
703 r = sd_bus_message_new_signal(
706 "/org/freedesktop/systemd1",
707 "org.freedesktop.systemd1.Manager",
712 r = sd_bus_message_append(m, "so", u->id, p);
716 return sd_bus_send(bus, m, NULL);
719 void bus_unit_send_removed_signal(Unit *u) {
723 if (!u->sent_dbus_new_signal)
724 bus_unit_send_change_signal(u);
729 r = bus_foreach_bus(u->manager, NULL, send_removed_signal, u);
731 log_debug("Failed to send unit remove signal for %s: %s", u->id, strerror(-r));
734 int bus_unit_queue_job(
736 sd_bus_message *message,
740 bool reload_if_possible,
741 sd_bus_error *error) {
743 _cleanup_free_ char *path = NULL;
750 assert(type >= 0 && type < _JOB_TYPE_MAX);
751 assert(mode >= 0 && mode < _JOB_MODE_MAX);
753 if (reload_if_possible && unit_can_reload(u)) {
754 if (type == JOB_RESTART)
755 type = JOB_RELOAD_OR_START;
756 else if (type == JOB_TRY_RESTART)
760 r = mac_selinux_unit_access_check(
762 (type == JOB_START || type == JOB_RESTART || type == JOB_TRY_RESTART) ? "start" :
763 type == JOB_STOP ? "stop" : "reload", error);
767 if (type == JOB_STOP &&
768 (u->load_state == UNIT_NOT_FOUND || u->load_state == UNIT_ERROR) &&
769 unit_active_state(u) == UNIT_INACTIVE)
770 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s not loaded.", u->id);
772 if ((type == JOB_START && u->refuse_manual_start) ||
773 (type == JOB_STOP && u->refuse_manual_stop) ||
774 ((type == JOB_RESTART || type == JOB_TRY_RESTART) && (u->refuse_manual_start || u->refuse_manual_stop)))
775 return sd_bus_error_setf(error, BUS_ERROR_ONLY_BY_DEPENDENCY, "Operation refused, unit %s may be requested by dependency only.", u->id);
777 r = manager_add_job(u->manager, type, u, mode, true, error, &j);
781 if (bus == u->manager->api_bus) {
783 r = sd_bus_track_new(bus, &j->clients, NULL, NULL);
788 r = sd_bus_track_add_sender(j->clients, message);
793 path = job_dbus_path(j);
797 return sd_bus_reply_method_return(message, "o", path);
800 static int bus_unit_set_transient_property(
803 sd_bus_message *message,
804 UnitSetPropertiesMode mode,
805 sd_bus_error *error) {
813 if (streq(name, "Description")) {
816 r = sd_bus_message_read(message, "s", &d);
820 if (mode != UNIT_CHECK) {
821 r = unit_set_description(u, d);
825 unit_write_drop_in_format(u, mode, name, "[Unit]\nDescription=%s\n", d);
830 } else if (streq(name, "Slice") && unit_get_cgroup_context(u)) {
833 r = sd_bus_message_read(message, "s", &s);
837 if (!unit_name_is_valid(s, TEMPLATE_INVALID) || !endswith(s, ".slice"))
838 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid slice name %s", s);
841 if (mode != UNIT_CHECK) {
842 unit_ref_unset(&u->slice);
843 unit_remove_drop_in(u, mode, name);
848 r = manager_load_unit(u->manager, s, NULL, error, &slice);
852 if (slice->type != UNIT_SLICE)
855 if (mode != UNIT_CHECK) {
856 unit_ref_set(&u->slice, slice);
857 unit_write_drop_in_private_format(u, mode, name, "Slice=%s\n", s);
862 } else if (STR_IN_SET(name,
863 "Requires", "RequiresOverridable",
864 "Requisite", "RequisiteOverridable",
870 "PropagatesReloadTo", "ReloadPropagatedFrom",
876 d = unit_dependency_from_string(name);
880 r = sd_bus_message_enter_container(message, 'a', "s");
884 while ((r = sd_bus_message_read(message, "s", &other)) > 0) {
885 if (!unit_name_is_valid(other, TEMPLATE_INVALID))
886 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit name %s", other);
888 if (mode != UNIT_CHECK) {
889 _cleanup_free_ char *label = NULL;
891 r = unit_add_dependency_by_name(u, d, other, NULL, true);
895 label = strjoin(name, "-", other, NULL);
899 unit_write_drop_in_format(u, mode, label, "[Unit]\n%s=%s\n", name, other);
906 r = sd_bus_message_exit_container(message);
916 int bus_unit_set_properties(
918 sd_bus_message *message,
919 UnitSetPropertiesMode mode,
921 sd_bus_error *error) {
923 bool for_real = false;
930 /* We iterate through the array twice. First run we just check
931 * if all passed data is valid, second run actually applies
932 * it. This is to implement transaction-like behaviour without
933 * actually providing full transactions. */
935 r = sd_bus_message_enter_container(message, 'a', "(sv)");
942 r = sd_bus_message_enter_container(message, 'r', "sv");
946 if (for_real || mode == UNIT_CHECK)
949 /* Reached EOF. Let's try again, and this time for realz... */
950 r = sd_bus_message_rewind(message, false);
958 r = sd_bus_message_read(message, "s", &name);
962 if (!UNIT_VTABLE(u)->bus_set_property)
963 return sd_bus_error_setf(error, SD_BUS_ERROR_PROPERTY_READ_ONLY, "Objects of this type do not support setting properties.");
965 r = sd_bus_message_enter_container(message, 'v', NULL);
969 r = UNIT_VTABLE(u)->bus_set_property(u, name, message, for_real ? mode : UNIT_CHECK, error);
970 if (r == 0 && u->transient && u->load_state == UNIT_STUB)
971 r = bus_unit_set_transient_property(u, name, message, for_real ? mode : UNIT_CHECK, error);
975 return sd_bus_error_setf(error, SD_BUS_ERROR_PROPERTY_READ_ONLY, "Cannot set property %s, or unknown property.", name);
977 r = sd_bus_message_exit_container(message);
981 r = sd_bus_message_exit_container(message);
988 r = sd_bus_message_exit_container(message);
992 if (commit && n > 0 && UNIT_VTABLE(u)->bus_commit_properties)
993 UNIT_VTABLE(u)->bus_commit_properties(u);