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 "dbus-unit.h"
30 #include "dbus-manager.h"
31 #include "bus-errors.h"
32 #include "dbus-client-track.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, bus, 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, bus, 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, bus, message, "start", error);
483 r = sd_bus_message_enter_container(message, 'a', "(sv)");
487 r = bus_unit_set_properties(u, message, runtime ? UNIT_RUNTIME : UNIT_PERSISTENT, true, error);
491 r = sd_bus_message_exit_container(message);
495 return sd_bus_reply_method_return(message, NULL);
498 const sd_bus_vtable bus_unit_vtable[] = {
499 SD_BUS_VTABLE_START(0),
501 SD_BUS_PROPERTY("Id", "s", NULL, offsetof(Unit, id), 0),
502 SD_BUS_PROPERTY("Names", "as", property_get_names, 0, 0),
503 SD_BUS_PROPERTY("Following", "s", property_get_following, 0, 0),
504 SD_BUS_PROPERTY("Requires", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRES]), 0),
505 SD_BUS_PROPERTY("RequiresOverridable", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRES_OVERRIDABLE]), 0),
506 SD_BUS_PROPERTY("Requisite", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUISITE]), 0),
507 SD_BUS_PROPERTY("RequisiteOverridable", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUISITE_OVERRIDABLE]), 0),
508 SD_BUS_PROPERTY("Wants", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_WANTS]), 0),
509 SD_BUS_PROPERTY("BindsTo", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BINDS_TO]), 0),
510 SD_BUS_PROPERTY("PartOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_PART_OF]), 0),
511 SD_BUS_PROPERTY("RequiredBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRED_BY]), 0),
512 SD_BUS_PROPERTY("RequiredByOverridable", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRED_BY_OVERRIDABLE]), 0),
513 SD_BUS_PROPERTY("WantedBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_WANTED_BY]), 0),
514 SD_BUS_PROPERTY("BoundBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BOUND_BY]), 0),
515 SD_BUS_PROPERTY("ConsistsOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONSISTS_OF]), 0),
516 SD_BUS_PROPERTY("Conflicts", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONFLICTS]), 0),
517 SD_BUS_PROPERTY("ConflictedBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONFLICTED_BY]), 0),
518 SD_BUS_PROPERTY("Before", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BEFORE]), 0),
519 SD_BUS_PROPERTY("After", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_AFTER]), 0),
520 SD_BUS_PROPERTY("OnFailure", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_ON_FAILURE]), 0),
521 SD_BUS_PROPERTY("Triggers", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_TRIGGERS]), 0),
522 SD_BUS_PROPERTY("TriggeredBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_TRIGGERED_BY]), 0),
523 SD_BUS_PROPERTY("PropagatesReloadTo", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_PROPAGATES_RELOAD_TO]), 0),
524 SD_BUS_PROPERTY("ReloadPropagatedFrom", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_RELOAD_PROPAGATED_FROM]), 0),
525 SD_BUS_PROPERTY("JoinsNamespaceOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_JOINS_NAMESPACE_OF]), 0),
526 SD_BUS_PROPERTY("RequiresMountsFor", "as", NULL, offsetof(Unit, requires_mounts_for), 0),
527 SD_BUS_PROPERTY("Documentation", "as", NULL, offsetof(Unit, documentation), 0),
528 SD_BUS_PROPERTY("Description", "s", property_get_description, 0, 0),
529 SD_BUS_PROPERTY("LoadState", "s", property_get_load_state, offsetof(Unit, load_state), 0),
530 SD_BUS_PROPERTY("ActiveState", "s", property_get_active_state, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
531 SD_BUS_PROPERTY("SubState", "s", property_get_sub_state, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
532 SD_BUS_PROPERTY("FragmentPath", "s", NULL, offsetof(Unit, fragment_path), 0),
533 SD_BUS_PROPERTY("SourcePath", "s", NULL, offsetof(Unit, source_path), 0),
534 SD_BUS_PROPERTY("DropInPaths", "as", NULL, offsetof(Unit, dropin_paths), 0),
535 SD_BUS_PROPERTY("UnitFileState", "s", property_get_unit_file_state, 0, 0),
536 BUS_PROPERTY_DUAL_TIMESTAMP("InactiveExitTimestamp", offsetof(Unit, inactive_exit_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
537 BUS_PROPERTY_DUAL_TIMESTAMP("ActiveEnterTimestamp", offsetof(Unit, active_enter_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
538 BUS_PROPERTY_DUAL_TIMESTAMP("ActiveExitTimestamp", offsetof(Unit, active_exit_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
539 BUS_PROPERTY_DUAL_TIMESTAMP("InactiveEnterTimestamp", offsetof(Unit, inactive_enter_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
540 SD_BUS_PROPERTY("CanStart", "b", property_get_can_start, 0, 0),
541 SD_BUS_PROPERTY("CanStop", "b", property_get_can_stop, 0, 0),
542 SD_BUS_PROPERTY("CanReload", "b", property_get_can_reload, 0, 0),
543 SD_BUS_PROPERTY("CanIsolate", "b", property_get_can_isolate, 0, 0),
544 SD_BUS_PROPERTY("Job", "(uo)", property_get_job, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
545 SD_BUS_PROPERTY("StopWhenUnneeded", "b", bus_property_get_bool, offsetof(Unit, stop_when_unneeded), 0),
546 SD_BUS_PROPERTY("RefuseManualStart", "b", bus_property_get_bool, offsetof(Unit, refuse_manual_start), 0),
547 SD_BUS_PROPERTY("RefuseManualStop", "b", bus_property_get_bool, offsetof(Unit, refuse_manual_stop), 0),
548 SD_BUS_PROPERTY("AllowIsolate", "b", bus_property_get_bool, offsetof(Unit, allow_isolate), 0),
549 SD_BUS_PROPERTY("DefaultDependencies", "b", bus_property_get_bool, offsetof(Unit, default_dependencies), 0),
550 SD_BUS_PROPERTY("OnFailureJobMode", "s", property_get_job_mode, offsetof(Unit, on_failure_job_mode), 0),
551 SD_BUS_PROPERTY("IgnoreOnIsolate", "b", bus_property_get_bool, offsetof(Unit, ignore_on_isolate), 0),
552 SD_BUS_PROPERTY("IgnoreOnSnapshot", "b", bus_property_get_bool, offsetof(Unit, ignore_on_snapshot), 0),
553 SD_BUS_PROPERTY("NeedDaemonReload", "b", property_get_need_daemon_reload, 0, 0),
554 SD_BUS_PROPERTY("JobTimeoutUSec", "t", bus_property_get_usec, offsetof(Unit, job_timeout), 0),
555 SD_BUS_PROPERTY("ConditionResult", "b", bus_property_get_bool, offsetof(Unit, condition_result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
556 BUS_PROPERTY_DUAL_TIMESTAMP("ConditionTimestamp", offsetof(Unit, condition_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
557 SD_BUS_PROPERTY("Conditions", "a(sbbsi)", property_get_conditions, 0, 0),
558 SD_BUS_PROPERTY("LoadError", "(ss)", property_get_load_error, 0, 0),
559 SD_BUS_PROPERTY("Transient", "b", bus_property_get_bool, offsetof(Unit, transient), 0),
561 SD_BUS_METHOD("Start", "s", "o", method_start, 0),
562 SD_BUS_METHOD("Stop", "s", "o", method_stop, 0),
563 SD_BUS_METHOD("Reload", "s", "o", method_reload, 0),
564 SD_BUS_METHOD("Restart", "s", "o", method_restart, 0),
565 SD_BUS_METHOD("TryRestart", "s", "o", method_try_restart, 0),
566 SD_BUS_METHOD("ReloadOrRestart", "s", "o", method_reload_or_restart, 0),
567 SD_BUS_METHOD("ReloadOrTryRestart", "s", "o", method_reload_or_try_restart, 0),
568 SD_BUS_METHOD("Kill", "si", NULL, bus_unit_method_kill, 0),
569 SD_BUS_METHOD("ResetFailed", NULL, NULL, bus_unit_method_reset_failed, 0),
570 SD_BUS_METHOD("SetProperties", "ba(sv)", NULL, bus_unit_method_set_properties, 0),
575 static int property_get_slice(
578 const char *interface,
579 const char *property,
580 sd_bus_message *reply,
582 sd_bus_error *error) {
590 return sd_bus_message_append(reply, "s", unit_slice_name(u));
593 const sd_bus_vtable bus_unit_cgroup_vtable[] = {
594 SD_BUS_VTABLE_START(0),
595 SD_BUS_PROPERTY("Slice", "s", property_get_slice, 0, 0),
596 SD_BUS_PROPERTY("ControlGroup", "s", NULL, offsetof(Unit, cgroup_path), 0),
600 static int send_new_signal(sd_bus *bus, const char *destination, void *userdata) {
601 _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
602 _cleanup_free_ char *p = NULL;
609 p = unit_dbus_path(u);
613 r = sd_bus_message_new_signal(
615 "/org/freedesktop/systemd1",
616 "org.freedesktop.systemd1.Manager",
622 r = sd_bus_message_append(m, "so", u->id, p);
626 return sd_bus_send_to(bus, m, destination, NULL);
629 static int send_changed_signal(sd_bus *bus, const char *destination, void *userdata) {
630 _cleanup_free_ char *p = NULL;
637 p = unit_dbus_path(u);
641 /* Send a properties changed signal. First for the specific
642 * type, then for the generic unit. The clients may rely on
643 * this order to get atomic behavior if needed. */
645 if (UNIT_VTABLE(u)->bus_changing_properties) {
647 r = sd_bus_emit_properties_changed_strv(
649 UNIT_VTABLE(u)->bus_interface,
650 (char**) UNIT_VTABLE(u)->bus_changing_properties);
655 return sd_bus_emit_properties_changed(
657 "org.freedesktop.systemd1.Unit",
660 "InactiveExitTimestamp",
661 "ActiveEnterTimestamp",
662 "ActiveExitTimestamp",
663 "InactiveEnterTimestamp",
666 "ConditionTimestamp",
670 void bus_unit_send_change_signal(Unit *u) {
674 if (u->in_dbus_queue) {
675 LIST_REMOVE(dbus_queue, u->manager->dbus_unit_queue, u);
676 u->in_dbus_queue = false;
682 r = bus_manager_foreach_client(u->manager, u->sent_dbus_new_signal ? send_changed_signal : send_new_signal, u);
684 log_debug("Failed to send unit change signal for %s: %s", u->id, strerror(-r));
686 u->sent_dbus_new_signal = true;
689 static int send_removed_signal(sd_bus *bus, const char *destination, void *userdata) {
690 _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
691 _cleanup_free_ char *p = NULL;
698 p = unit_dbus_path(u);
702 r = sd_bus_message_new_signal(
704 "/org/freedesktop/systemd1",
705 "org.freedesktop.systemd1.Manager",
711 r = sd_bus_message_append(m, "so", u->id, p);
715 return sd_bus_send_to(bus, m, destination, NULL);
718 void bus_unit_send_removed_signal(Unit *u) {
722 if (!u->sent_dbus_new_signal)
723 bus_unit_send_change_signal(u);
728 r = bus_manager_foreach_client(u->manager, send_removed_signal, u);
730 log_debug("Failed to send unit remove signal for %s: %s", u->id, strerror(-r));
733 int bus_unit_queue_job(
735 sd_bus_message *message,
739 bool reload_if_possible,
740 sd_bus_error *error) {
742 _cleanup_free_ char *path = NULL;
749 assert(type >= 0 && type < _JOB_TYPE_MAX);
750 assert(mode >= 0 && mode < _JOB_MODE_MAX);
752 if (reload_if_possible && unit_can_reload(u)) {
753 if (type == JOB_RESTART)
754 type = JOB_RELOAD_OR_START;
755 else if (type == JOB_TRY_RESTART)
759 r = selinux_unit_access_check(
761 (type == JOB_START || type == JOB_RESTART || type == JOB_TRY_RESTART) ? "start" :
762 type == JOB_STOP ? "stop" : "reload", error);
766 if (type == JOB_STOP &&
767 (u->load_state == UNIT_NOT_FOUND || u->load_state == UNIT_ERROR) &&
768 unit_active_state(u) == UNIT_INACTIVE)
769 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s not loaded.", u->id);
771 if ((type == JOB_START && u->refuse_manual_start) ||
772 (type == JOB_STOP && u->refuse_manual_stop) ||
773 ((type == JOB_RESTART || type == JOB_TRY_RESTART) && (u->refuse_manual_start || u->refuse_manual_stop)))
774 return sd_bus_error_setf(error, BUS_ERROR_ONLY_BY_DEPENDENCY, "Operation refused, unit %s may be requested by dependency only.", u->id);
776 r = manager_add_job(u->manager, type, u, mode, true, error, &j);
780 r = bus_client_track(&j->subscribed, bus, sd_bus_message_get_sender(message));
784 path = job_dbus_path(j);
788 return sd_bus_reply_method_return(message, "o", path);
791 static int bus_unit_set_transient_property(
794 sd_bus_message *message,
795 UnitSetPropertiesMode mode,
796 sd_bus_error *error) {
804 if (streq(name, "Description")) {
807 r = sd_bus_message_read(message, "s", &d);
811 if (mode != UNIT_CHECK) {
812 r = unit_set_description(u, d);
816 unit_write_drop_in_format(u, mode, name, "[Unit]\nDescription=%s\n", d);
821 } else if (streq(name, "Slice") && unit_get_cgroup_context(u)) {
824 r = sd_bus_message_read(message, "s", &s);
828 if (!unit_name_is_valid(s, false) || !endswith(s, ".slice"))
829 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid slice name %s", s);
832 if (mode != UNIT_CHECK) {
833 unit_ref_unset(&u->slice);
834 unit_remove_drop_in(u, mode, name);
839 r = manager_load_unit(u->manager, s, NULL, error, &slice);
843 if (slice->type != UNIT_SLICE)
846 if (mode != UNIT_CHECK) {
847 unit_ref_set(&u->slice, slice);
848 unit_write_drop_in_private_format(u, mode, name, "Slice=%s\n", s);
854 } else if (streq(name, "Requires") ||
855 streq(name, "RequiresOverridable") ||
856 streq(name, "Requisite") ||
857 streq(name, "RequisiteOverridable") ||
858 streq(name, "Wants") ||
859 streq(name, "BindsTo") ||
860 streq(name, "Conflicts") ||
861 streq(name, "Before") ||
862 streq(name, "After") ||
863 streq(name, "OnFailure") ||
864 streq(name, "PropagatesReloadTo") ||
865 streq(name, "ReloadPropagatedFrom") ||
866 streq(name, "PartOf")) {
871 d = unit_dependency_from_string(name);
875 r = sd_bus_message_enter_container(message, 'a', "s");
879 while ((r = sd_bus_message_read(message, "s", &other)) > 0) {
880 if (!unit_name_is_valid(other, false))
881 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit name %s", other);
883 if (mode != UNIT_CHECK) {
884 _cleanup_free_ char *label = NULL;
886 r = unit_add_dependency_by_name(u, d, other, NULL, true);
890 label = strjoin(name, "-", other, NULL);
894 unit_write_drop_in_format(u, mode, label, "[Unit]\n%s=%s\n", name, other);
901 r = sd_bus_message_exit_container(message);
911 int bus_unit_set_properties(
913 sd_bus_message *message,
914 UnitSetPropertiesMode mode,
916 sd_bus_error *error) {
918 bool for_real = false;
926 mode &= UNIT_RUNTIME;
928 /* We iterate through the array twice. First run we just check
929 * if all passed data is valid, second run actually applies
930 * it. This is to implement transaction-like behaviour without
931 * actually providing full transactions. */
933 r = sd_bus_message_enter_container(message, 'a', "(sv)");
940 r = sd_bus_message_enter_container(message, 'r', "sv");
944 if (for_real || mode == UNIT_CHECK)
947 /* Reached EOF. Let's try again, and this time for realz... */
948 r = sd_bus_message_rewind(message, false);
956 r = sd_bus_message_read(message, "s", &name);
960 if (!UNIT_VTABLE(u)->bus_set_property)
961 return sd_bus_error_setf(error, SD_BUS_ERROR_PROPERTY_READ_ONLY, "Objects of this type do not support setting properties.");
963 r = sd_bus_message_enter_container(message, 'v', NULL);
967 r = UNIT_VTABLE(u)->bus_set_property(u, name, message, for_real ? mode : UNIT_CHECK, error);
968 if (r == 0 && u->transient && u->load_state == UNIT_STUB)
969 r = bus_unit_set_transient_property(u, name, message, for_real ? mode : UNIT_CHECK, error);
973 return sd_bus_error_setf(error, SD_BUS_ERROR_PROPERTY_READ_ONLY, "Cannot set property %s, or unknown property.", name);
975 r = sd_bus_message_exit_container(message);
979 r = sd_bus_message_exit_container(message);
986 r = sd_bus_message_exit_container(message);
990 if (commit && n > 0 && UNIT_VTABLE(u)->bus_commit_properties)
991 UNIT_VTABLE(u)->bus_commit_properties(u);