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);
37 static int property_get_names(
40 const char *interface,
42 sd_bus_message *reply,
44 sd_bus_error *error) {
55 r = sd_bus_message_open_container(reply, 'a', "s");
59 SET_FOREACH(t, u->names, i) {
60 r = sd_bus_message_append(reply, "s", t);
65 return sd_bus_message_close_container(reply);
68 static int property_get_following(
71 const char *interface,
73 sd_bus_message *reply,
75 sd_bus_error *error) {
77 Unit *u = userdata, *f;
83 f = unit_following(u);
84 return sd_bus_message_append(reply, "s", f ? f->id : "");
87 static int property_get_dependencies(
90 const char *interface,
92 sd_bus_message *reply,
94 sd_bus_error *error) {
96 Set *s = *(Set**) userdata;
104 r = sd_bus_message_open_container(reply, 'a', "s");
108 SET_FOREACH(u, s, j) {
109 r = sd_bus_message_append(reply, "s", u->id);
114 return sd_bus_message_close_container(reply);
117 static int property_get_description(
120 const char *interface,
121 const char *property,
122 sd_bus_message *reply,
124 sd_bus_error *error) {
132 return sd_bus_message_append(reply, "s", unit_description(u));
135 static int property_get_active_state(
138 const char *interface,
139 const char *property,
140 sd_bus_message *reply,
142 sd_bus_error *error) {
150 return sd_bus_message_append(reply, "s", unit_active_state_to_string(unit_active_state(u)));
153 static int property_get_sub_state(
156 const char *interface,
157 const char *property,
158 sd_bus_message *reply,
160 sd_bus_error *error) {
168 return sd_bus_message_append(reply, "s", unit_sub_state_to_string(u));
171 static int property_get_unit_file_state(
174 const char *interface,
175 const char *property,
176 sd_bus_message *reply,
178 sd_bus_error *error) {
186 return sd_bus_message_append(reply, "s", unit_file_state_to_string(unit_get_unit_file_state(u)));
189 static int property_get_can_start(
192 const char *interface,
193 const char *property,
194 sd_bus_message *reply,
196 sd_bus_error *error) {
204 return sd_bus_message_append(reply, "b", unit_can_start(u) && !u->refuse_manual_start);
207 static int property_get_can_stop(
210 const char *interface,
211 const char *property,
212 sd_bus_message *reply,
214 sd_bus_error *error) {
222 /* On the lower levels we assume that every unit we can start
223 * we can also stop */
225 return sd_bus_message_append(reply, "b", unit_can_start(u) && !u->refuse_manual_stop);
228 static int property_get_can_reload(
231 const char *interface,
232 const char *property,
233 sd_bus_message *reply,
235 sd_bus_error *error) {
243 return sd_bus_message_append(reply, "b", unit_can_reload(u));
246 static int property_get_can_isolate(
249 const char *interface,
250 const char *property,
251 sd_bus_message *reply,
253 sd_bus_error *error) {
261 return sd_bus_message_append(reply, "b", unit_can_isolate(u) && !u->refuse_manual_start);
264 static int property_get_job(
267 const char *interface,
268 const char *property,
269 sd_bus_message *reply,
271 sd_bus_error *error) {
273 _cleanup_free_ char *p = NULL;
281 return sd_bus_message_append(reply, "(uo)", 0, "/");
283 p = job_dbus_path(u->job);
287 return sd_bus_message_append(reply, "(uo)", u->job->id, p);
290 static int property_get_need_daemon_reload(
293 const char *interface,
294 const char *property,
295 sd_bus_message *reply,
297 sd_bus_error *error) {
305 return sd_bus_message_append(reply, "b", unit_need_daemon_reload(u));
308 static int property_get_conditions(
311 const char *interface,
312 const char *property,
313 sd_bus_message *reply,
315 sd_bus_error *error) {
325 r = sd_bus_message_open_container(reply, 'a', "(sbbsi)");
329 LIST_FOREACH(conditions, c, u->conditions) {
330 r = sd_bus_message_append(reply, "(sbbsi)",
331 condition_type_to_string(c->type),
332 c->trigger, c->negate,
333 c->parameter, c->state);
339 return sd_bus_message_close_container(reply);
342 static int property_get_load_error(
345 const char *interface,
346 const char *property,
347 sd_bus_message *reply,
349 sd_bus_error *error) {
351 _cleanup_bus_error_free_ sd_bus_error e = SD_BUS_ERROR_NULL;
358 if (u->load_error != 0)
359 sd_bus_error_set_errno(&e, u->load_error);
361 return sd_bus_message_append(reply, "(ss)", e.name, e.message);
364 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) {
372 assert(job_type >= 0 && job_type < _JOB_TYPE_MAX);
374 r = sd_bus_message_read(message, "s", &smode);
378 mode = job_mode_from_string(smode);
380 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job mode %s invalid", smode);
382 return bus_unit_queue_job(bus, message, u, job_type, mode, reload_if_possible, error);
385 static int method_start(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
386 return bus_unit_method_start_generic(bus, message, userdata, JOB_START, false, error);
389 static int method_stop(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
390 return bus_unit_method_start_generic(bus, message, userdata, JOB_STOP, false, error);
393 static int method_reload(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
394 return bus_unit_method_start_generic(bus, message, userdata, JOB_RELOAD, false, error);
397 static int method_restart(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
398 return bus_unit_method_start_generic(bus, message, userdata, JOB_RESTART, false, error);
401 static int method_try_restart(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
402 return bus_unit_method_start_generic(bus, message, userdata, JOB_TRY_RESTART, false, error);
405 static int method_reload_or_restart(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
406 return bus_unit_method_start_generic(bus, message, userdata, JOB_RESTART, true, error);
409 static int method_reload_or_try_restart(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
410 return bus_unit_method_start_generic(bus, message, userdata, JOB_TRY_RESTART, true, error);
413 int bus_unit_method_kill(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
424 r = sd_bus_message_read(message, "si", &swho, &signo);
431 who = kill_who_from_string(swho);
433 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid who argument %s", swho);
436 if (signo <= 0 || signo >= _NSIG)
437 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Signal number out of range.");
439 r = selinux_unit_access_check(u, message, "stop", error);
443 r = unit_kill(u, who, signo, error);
447 return sd_bus_reply_method_return(message, NULL);
450 int bus_unit_method_reset_failed(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
458 r = selinux_unit_access_check(u, message, "reload", error);
462 unit_reset_failed(u);
464 return sd_bus_reply_method_return(message, NULL);
467 int bus_unit_method_set_properties(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
475 r = sd_bus_message_read(message, "b", &runtime);
479 r = selinux_unit_access_check(u, message, "start", error);
483 r = bus_unit_set_properties(u, message, runtime ? UNIT_RUNTIME : UNIT_PERSISTENT, true, error);
487 return sd_bus_reply_method_return(message, NULL);
490 const sd_bus_vtable bus_unit_vtable[] = {
491 SD_BUS_VTABLE_START(0),
493 SD_BUS_PROPERTY("Id", "s", NULL, offsetof(Unit, id), SD_BUS_VTABLE_PROPERTY_CONST),
494 SD_BUS_PROPERTY("Names", "as", property_get_names, 0, SD_BUS_VTABLE_PROPERTY_CONST),
495 SD_BUS_PROPERTY("Following", "s", property_get_following, 0, 0),
496 SD_BUS_PROPERTY("Requires", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRES]), SD_BUS_VTABLE_PROPERTY_CONST),
497 SD_BUS_PROPERTY("RequiresOverridable", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRES_OVERRIDABLE]), SD_BUS_VTABLE_PROPERTY_CONST),
498 SD_BUS_PROPERTY("Requisite", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUISITE]), SD_BUS_VTABLE_PROPERTY_CONST),
499 SD_BUS_PROPERTY("RequisiteOverridable", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUISITE_OVERRIDABLE]), SD_BUS_VTABLE_PROPERTY_CONST),
500 SD_BUS_PROPERTY("Wants", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_WANTS]), SD_BUS_VTABLE_PROPERTY_CONST),
501 SD_BUS_PROPERTY("BindsTo", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BINDS_TO]), SD_BUS_VTABLE_PROPERTY_CONST),
502 SD_BUS_PROPERTY("PartOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_PART_OF]), SD_BUS_VTABLE_PROPERTY_CONST),
503 SD_BUS_PROPERTY("RequiredBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
504 SD_BUS_PROPERTY("RequiredByOverridable", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRED_BY_OVERRIDABLE]), SD_BUS_VTABLE_PROPERTY_CONST),
505 SD_BUS_PROPERTY("WantedBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_WANTED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
506 SD_BUS_PROPERTY("BoundBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BOUND_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
507 SD_BUS_PROPERTY("ConsistsOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONSISTS_OF]), SD_BUS_VTABLE_PROPERTY_CONST),
508 SD_BUS_PROPERTY("Conflicts", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONFLICTS]), SD_BUS_VTABLE_PROPERTY_CONST),
509 SD_BUS_PROPERTY("ConflictedBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONFLICTED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
510 SD_BUS_PROPERTY("Before", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BEFORE]), SD_BUS_VTABLE_PROPERTY_CONST),
511 SD_BUS_PROPERTY("After", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_AFTER]), SD_BUS_VTABLE_PROPERTY_CONST),
512 SD_BUS_PROPERTY("OnFailure", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_ON_FAILURE]), SD_BUS_VTABLE_PROPERTY_CONST),
513 SD_BUS_PROPERTY("Triggers", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_TRIGGERS]), SD_BUS_VTABLE_PROPERTY_CONST),
514 SD_BUS_PROPERTY("TriggeredBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_TRIGGERED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
515 SD_BUS_PROPERTY("PropagatesReloadTo", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_PROPAGATES_RELOAD_TO]), SD_BUS_VTABLE_PROPERTY_CONST),
516 SD_BUS_PROPERTY("ReloadPropagatedFrom", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_RELOAD_PROPAGATED_FROM]), SD_BUS_VTABLE_PROPERTY_CONST),
517 SD_BUS_PROPERTY("JoinsNamespaceOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_JOINS_NAMESPACE_OF]), SD_BUS_VTABLE_PROPERTY_CONST),
518 SD_BUS_PROPERTY("RequiresMountsFor", "as", NULL, offsetof(Unit, requires_mounts_for), SD_BUS_VTABLE_PROPERTY_CONST),
519 SD_BUS_PROPERTY("Documentation", "as", NULL, offsetof(Unit, documentation), SD_BUS_VTABLE_PROPERTY_CONST),
520 SD_BUS_PROPERTY("Description", "s", property_get_description, 0, SD_BUS_VTABLE_PROPERTY_CONST),
521 SD_BUS_PROPERTY("LoadState", "s", property_get_load_state, offsetof(Unit, load_state), SD_BUS_VTABLE_PROPERTY_CONST),
522 SD_BUS_PROPERTY("ActiveState", "s", property_get_active_state, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
523 SD_BUS_PROPERTY("SubState", "s", property_get_sub_state, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
524 SD_BUS_PROPERTY("FragmentPath", "s", NULL, offsetof(Unit, fragment_path), SD_BUS_VTABLE_PROPERTY_CONST),
525 SD_BUS_PROPERTY("SourcePath", "s", NULL, offsetof(Unit, source_path), SD_BUS_VTABLE_PROPERTY_CONST),
526 SD_BUS_PROPERTY("DropInPaths", "as", NULL, offsetof(Unit, dropin_paths), SD_BUS_VTABLE_PROPERTY_CONST),
527 SD_BUS_PROPERTY("UnitFileState", "s", property_get_unit_file_state, 0, 0),
528 BUS_PROPERTY_DUAL_TIMESTAMP("InactiveExitTimestamp", offsetof(Unit, inactive_exit_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
529 BUS_PROPERTY_DUAL_TIMESTAMP("ActiveEnterTimestamp", offsetof(Unit, active_enter_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
530 BUS_PROPERTY_DUAL_TIMESTAMP("ActiveExitTimestamp", offsetof(Unit, active_exit_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
531 BUS_PROPERTY_DUAL_TIMESTAMP("InactiveEnterTimestamp", offsetof(Unit, inactive_enter_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
532 SD_BUS_PROPERTY("CanStart", "b", property_get_can_start, 0, SD_BUS_VTABLE_PROPERTY_CONST),
533 SD_BUS_PROPERTY("CanStop", "b", property_get_can_stop, 0, SD_BUS_VTABLE_PROPERTY_CONST),
534 SD_BUS_PROPERTY("CanReload", "b", property_get_can_reload, 0, SD_BUS_VTABLE_PROPERTY_CONST),
535 SD_BUS_PROPERTY("CanIsolate", "b", property_get_can_isolate, 0, SD_BUS_VTABLE_PROPERTY_CONST),
536 SD_BUS_PROPERTY("Job", "(uo)", property_get_job, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
537 SD_BUS_PROPERTY("StopWhenUnneeded", "b", bus_property_get_bool, offsetof(Unit, stop_when_unneeded), SD_BUS_VTABLE_PROPERTY_CONST),
538 SD_BUS_PROPERTY("RefuseManualStart", "b", bus_property_get_bool, offsetof(Unit, refuse_manual_start), SD_BUS_VTABLE_PROPERTY_CONST),
539 SD_BUS_PROPERTY("RefuseManualStop", "b", bus_property_get_bool, offsetof(Unit, refuse_manual_stop), SD_BUS_VTABLE_PROPERTY_CONST),
540 SD_BUS_PROPERTY("AllowIsolate", "b", bus_property_get_bool, offsetof(Unit, allow_isolate), SD_BUS_VTABLE_PROPERTY_CONST),
541 SD_BUS_PROPERTY("DefaultDependencies", "b", bus_property_get_bool, offsetof(Unit, default_dependencies), SD_BUS_VTABLE_PROPERTY_CONST),
542 SD_BUS_PROPERTY("OnFailureJobMode", "s", property_get_job_mode, offsetof(Unit, on_failure_job_mode), SD_BUS_VTABLE_PROPERTY_CONST),
543 SD_BUS_PROPERTY("IgnoreOnIsolate", "b", bus_property_get_bool, offsetof(Unit, ignore_on_isolate), SD_BUS_VTABLE_PROPERTY_CONST),
544 SD_BUS_PROPERTY("IgnoreOnSnapshot", "b", bus_property_get_bool, offsetof(Unit, ignore_on_snapshot), SD_BUS_VTABLE_PROPERTY_CONST),
545 SD_BUS_PROPERTY("NeedDaemonReload", "b", property_get_need_daemon_reload, 0, SD_BUS_VTABLE_PROPERTY_CONST),
546 SD_BUS_PROPERTY("JobTimeoutUSec", "t", bus_property_get_usec, offsetof(Unit, job_timeout), SD_BUS_VTABLE_PROPERTY_CONST),
547 SD_BUS_PROPERTY("ConditionResult", "b", bus_property_get_bool, offsetof(Unit, condition_result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
548 BUS_PROPERTY_DUAL_TIMESTAMP("ConditionTimestamp", offsetof(Unit, condition_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
549 SD_BUS_PROPERTY("Conditions", "a(sbbsi)", property_get_conditions, 0, 0),
550 SD_BUS_PROPERTY("LoadError", "(ss)", property_get_load_error, 0, SD_BUS_VTABLE_PROPERTY_CONST),
551 SD_BUS_PROPERTY("Transient", "b", bus_property_get_bool, offsetof(Unit, transient), SD_BUS_VTABLE_PROPERTY_CONST),
553 SD_BUS_METHOD("Start", "s", "o", method_start, 0),
554 SD_BUS_METHOD("Stop", "s", "o", method_stop, 0),
555 SD_BUS_METHOD("Reload", "s", "o", method_reload, 0),
556 SD_BUS_METHOD("Restart", "s", "o", method_restart, 0),
557 SD_BUS_METHOD("TryRestart", "s", "o", method_try_restart, 0),
558 SD_BUS_METHOD("ReloadOrRestart", "s", "o", method_reload_or_restart, 0),
559 SD_BUS_METHOD("ReloadOrTryRestart", "s", "o", method_reload_or_try_restart, 0),
560 SD_BUS_METHOD("Kill", "si", NULL, bus_unit_method_kill, 0),
561 SD_BUS_METHOD("ResetFailed", NULL, NULL, bus_unit_method_reset_failed, 0),
562 SD_BUS_METHOD("SetProperties", "ba(sv)", NULL, bus_unit_method_set_properties, 0),
567 static int property_get_slice(
570 const char *interface,
571 const char *property,
572 sd_bus_message *reply,
574 sd_bus_error *error) {
582 return sd_bus_message_append(reply, "s", unit_slice_name(u));
585 const sd_bus_vtable bus_unit_cgroup_vtable[] = {
586 SD_BUS_VTABLE_START(0),
587 SD_BUS_PROPERTY("Slice", "s", property_get_slice, 0, 0),
588 SD_BUS_PROPERTY("ControlGroup", "s", NULL, offsetof(Unit, cgroup_path), 0),
592 static int send_new_signal(sd_bus *bus, void *userdata) {
593 _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
594 _cleanup_free_ char *p = NULL;
601 p = unit_dbus_path(u);
605 r = sd_bus_message_new_signal(
608 "/org/freedesktop/systemd1",
609 "org.freedesktop.systemd1.Manager",
614 r = sd_bus_message_append(m, "so", u->id, p);
618 return sd_bus_send(bus, m, NULL);
621 static int send_changed_signal(sd_bus *bus, void *userdata) {
622 _cleanup_free_ char *p = NULL;
629 p = unit_dbus_path(u);
633 /* Send a properties changed signal. First for the specific
634 * type, then for the generic unit. The clients may rely on
635 * this order to get atomic behavior if needed. */
637 r = sd_bus_emit_properties_changed_strv(
639 UNIT_VTABLE(u)->bus_interface,
644 return sd_bus_emit_properties_changed_strv(
646 "org.freedesktop.systemd1.Unit",
650 void bus_unit_send_change_signal(Unit *u) {
654 if (u->in_dbus_queue) {
655 LIST_REMOVE(dbus_queue, u->manager->dbus_unit_queue, u);
656 u->in_dbus_queue = false;
662 r = bus_foreach_bus(u->manager, NULL, u->sent_dbus_new_signal ? send_changed_signal : send_new_signal, u);
664 log_debug("Failed to send unit change signal for %s: %s", u->id, strerror(-r));
666 u->sent_dbus_new_signal = true;
669 static int send_removed_signal(sd_bus *bus, void *userdata) {
670 _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
671 _cleanup_free_ char *p = NULL;
678 p = unit_dbus_path(u);
682 r = sd_bus_message_new_signal(
685 "/org/freedesktop/systemd1",
686 "org.freedesktop.systemd1.Manager",
691 r = sd_bus_message_append(m, "so", u->id, p);
695 return sd_bus_send(bus, m, NULL);
698 void bus_unit_send_removed_signal(Unit *u) {
702 if (!u->sent_dbus_new_signal)
703 bus_unit_send_change_signal(u);
708 r = bus_foreach_bus(u->manager, NULL, send_removed_signal, u);
710 log_debug("Failed to send unit remove signal for %s: %s", u->id, strerror(-r));
713 int bus_unit_queue_job(
715 sd_bus_message *message,
719 bool reload_if_possible,
720 sd_bus_error *error) {
722 _cleanup_free_ char *path = NULL;
729 assert(type >= 0 && type < _JOB_TYPE_MAX);
730 assert(mode >= 0 && mode < _JOB_MODE_MAX);
732 if (reload_if_possible && unit_can_reload(u)) {
733 if (type == JOB_RESTART)
734 type = JOB_RELOAD_OR_START;
735 else if (type == JOB_TRY_RESTART)
739 r = selinux_unit_access_check(
741 (type == JOB_START || type == JOB_RESTART || type == JOB_TRY_RESTART) ? "start" :
742 type == JOB_STOP ? "stop" : "reload", error);
746 if (type == JOB_STOP &&
747 (u->load_state == UNIT_NOT_FOUND || u->load_state == UNIT_ERROR) &&
748 unit_active_state(u) == UNIT_INACTIVE)
749 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s not loaded.", u->id);
751 if ((type == JOB_START && u->refuse_manual_start) ||
752 (type == JOB_STOP && u->refuse_manual_stop) ||
753 ((type == JOB_RESTART || type == JOB_TRY_RESTART) && (u->refuse_manual_start || u->refuse_manual_stop)))
754 return sd_bus_error_setf(error, BUS_ERROR_ONLY_BY_DEPENDENCY, "Operation refused, unit %s may be requested by dependency only.", u->id);
756 r = manager_add_job(u->manager, type, u, mode, true, error, &j);
760 if (bus == u->manager->api_bus) {
761 if (!j->subscribed) {
762 r = sd_bus_track_new(bus, &j->subscribed, NULL, NULL);
767 r = sd_bus_track_add_sender(j->subscribed, message);
772 path = job_dbus_path(j);
776 return sd_bus_reply_method_return(message, "o", path);
779 static int bus_unit_set_transient_property(
782 sd_bus_message *message,
783 UnitSetPropertiesMode mode,
784 sd_bus_error *error) {
792 if (streq(name, "Description")) {
795 r = sd_bus_message_read(message, "s", &d);
799 if (mode != UNIT_CHECK) {
800 r = unit_set_description(u, d);
804 unit_write_drop_in_format(u, mode, name, "[Unit]\nDescription=%s\n", d);
809 } else if (streq(name, "Slice") && unit_get_cgroup_context(u)) {
812 r = sd_bus_message_read(message, "s", &s);
816 if (!unit_name_is_valid(s, TEMPLATE_INVALID) || !endswith(s, ".slice"))
817 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid slice name %s", s);
820 if (mode != UNIT_CHECK) {
821 unit_ref_unset(&u->slice);
822 unit_remove_drop_in(u, mode, name);
827 r = manager_load_unit(u->manager, s, NULL, error, &slice);
831 if (slice->type != UNIT_SLICE)
834 if (mode != UNIT_CHECK) {
835 unit_ref_set(&u->slice, slice);
836 unit_write_drop_in_private_format(u, mode, name, "Slice=%s\n", s);
842 } else if (streq(name, "Requires") ||
843 streq(name, "RequiresOverridable") ||
844 streq(name, "Requisite") ||
845 streq(name, "RequisiteOverridable") ||
846 streq(name, "Wants") ||
847 streq(name, "BindsTo") ||
848 streq(name, "Conflicts") ||
849 streq(name, "Before") ||
850 streq(name, "After") ||
851 streq(name, "OnFailure") ||
852 streq(name, "PropagatesReloadTo") ||
853 streq(name, "ReloadPropagatedFrom") ||
854 streq(name, "PartOf")) {
859 d = unit_dependency_from_string(name);
863 r = sd_bus_message_enter_container(message, 'a', "s");
867 while ((r = sd_bus_message_read(message, "s", &other)) > 0) {
868 if (!unit_name_is_valid(other, TEMPLATE_INVALID))
869 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit name %s", other);
871 if (mode != UNIT_CHECK) {
872 _cleanup_free_ char *label = NULL;
874 r = unit_add_dependency_by_name(u, d, other, NULL, true);
878 label = strjoin(name, "-", other, NULL);
882 unit_write_drop_in_format(u, mode, label, "[Unit]\n%s=%s\n", name, other);
889 r = sd_bus_message_exit_container(message);
899 int bus_unit_set_properties(
901 sd_bus_message *message,
902 UnitSetPropertiesMode mode,
904 sd_bus_error *error) {
906 bool for_real = false;
913 /* We iterate through the array twice. First run we just check
914 * if all passed data is valid, second run actually applies
915 * it. This is to implement transaction-like behaviour without
916 * actually providing full transactions. */
918 r = sd_bus_message_enter_container(message, 'a', "(sv)");
925 r = sd_bus_message_enter_container(message, 'r', "sv");
929 if (for_real || mode == UNIT_CHECK)
932 /* Reached EOF. Let's try again, and this time for realz... */
933 r = sd_bus_message_rewind(message, false);
941 r = sd_bus_message_read(message, "s", &name);
945 if (!UNIT_VTABLE(u)->bus_set_property)
946 return sd_bus_error_setf(error, SD_BUS_ERROR_PROPERTY_READ_ONLY, "Objects of this type do not support setting properties.");
948 r = sd_bus_message_enter_container(message, 'v', NULL);
952 r = UNIT_VTABLE(u)->bus_set_property(u, name, message, for_real ? mode : UNIT_CHECK, error);
953 if (r == 0 && u->transient && u->load_state == UNIT_STUB)
954 r = bus_unit_set_transient_property(u, name, message, for_real ? mode : UNIT_CHECK, error);
958 return sd_bus_error_setf(error, SD_BUS_ERROR_PROPERTY_READ_ONLY, "Cannot set property %s, or unknown property.", name);
960 r = sd_bus_message_exit_container(message);
964 r = sd_bus_message_exit_container(message);
971 r = sd_bus_message_exit_container(message);
975 if (commit && n > 0 && UNIT_VTABLE(u)->bus_commit_properties)
976 UNIT_VTABLE(u)->bus_commit_properties(u);