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-common-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_preset(
175 const char *interface,
176 const char *property,
177 sd_bus_message *reply,
179 sd_bus_error *error) {
188 r = unit_get_unit_file_preset(u);
190 return sd_bus_message_append(reply, "s",
192 r > 0 ? "enabled" : "disabled");
195 static int property_get_unit_file_state(
198 const char *interface,
199 const char *property,
200 sd_bus_message *reply,
202 sd_bus_error *error) {
210 return sd_bus_message_append(reply, "s", unit_file_state_to_string(unit_get_unit_file_state(u)));
213 static int property_get_can_start(
216 const char *interface,
217 const char *property,
218 sd_bus_message *reply,
220 sd_bus_error *error) {
228 return sd_bus_message_append(reply, "b", unit_can_start(u) && !u->refuse_manual_start);
231 static int property_get_can_stop(
234 const char *interface,
235 const char *property,
236 sd_bus_message *reply,
238 sd_bus_error *error) {
246 /* On the lower levels we assume that every unit we can start
247 * we can also stop */
249 return sd_bus_message_append(reply, "b", unit_can_start(u) && !u->refuse_manual_stop);
252 static int property_get_can_reload(
255 const char *interface,
256 const char *property,
257 sd_bus_message *reply,
259 sd_bus_error *error) {
267 return sd_bus_message_append(reply, "b", unit_can_reload(u));
270 static int property_get_can_isolate(
273 const char *interface,
274 const char *property,
275 sd_bus_message *reply,
277 sd_bus_error *error) {
285 return sd_bus_message_append(reply, "b", unit_can_isolate(u) && !u->refuse_manual_start);
288 static int property_get_job(
291 const char *interface,
292 const char *property,
293 sd_bus_message *reply,
295 sd_bus_error *error) {
297 _cleanup_free_ char *p = NULL;
305 return sd_bus_message_append(reply, "(uo)", 0, "/");
307 p = job_dbus_path(u->job);
311 return sd_bus_message_append(reply, "(uo)", u->job->id, p);
314 static int property_get_need_daemon_reload(
317 const char *interface,
318 const char *property,
319 sd_bus_message *reply,
321 sd_bus_error *error) {
329 return sd_bus_message_append(reply, "b", unit_need_daemon_reload(u));
332 static int property_get_conditions(
335 const char *interface,
336 const char *property,
337 sd_bus_message *reply,
339 sd_bus_error *error) {
341 const char *(*to_string)(ConditionType type) = NULL;
342 Condition **list = userdata, *c;
349 to_string = streq(property, "Asserts") ? assert_type_to_string : condition_type_to_string;
351 r = sd_bus_message_open_container(reply, 'a', "(sbbsi)");
355 LIST_FOREACH(conditions, c, *list) {
359 c->result == CONDITION_UNTESTED ? 0 :
360 c->result == CONDITION_SUCCEEDED ? 1 : -1;
362 r = sd_bus_message_append(reply, "(sbbsi)",
364 c->trigger, c->negate,
365 c->parameter, tristate);
371 return sd_bus_message_close_container(reply);
374 static int property_get_load_error(
377 const char *interface,
378 const char *property,
379 sd_bus_message *reply,
381 sd_bus_error *error) {
383 _cleanup_bus_error_free_ sd_bus_error e = SD_BUS_ERROR_NULL;
390 if (u->load_error != 0)
391 sd_bus_error_set_errno(&e, u->load_error);
393 return sd_bus_message_append(reply, "(ss)", e.name, e.message);
396 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) {
404 assert(job_type >= 0 && job_type < _JOB_TYPE_MAX);
406 r = sd_bus_message_read(message, "s", &smode);
410 mode = job_mode_from_string(smode);
412 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job mode %s invalid", smode);
414 return bus_unit_queue_job(bus, message, u, job_type, mode, reload_if_possible, error);
417 static int method_start(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
418 return bus_unit_method_start_generic(bus, message, userdata, JOB_START, false, error);
421 static int method_stop(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
422 return bus_unit_method_start_generic(bus, message, userdata, JOB_STOP, false, error);
425 static int method_reload(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
426 return bus_unit_method_start_generic(bus, message, userdata, JOB_RELOAD, false, error);
429 static int method_restart(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
430 return bus_unit_method_start_generic(bus, message, userdata, JOB_RESTART, false, error);
433 static int method_try_restart(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
434 return bus_unit_method_start_generic(bus, message, userdata, JOB_TRY_RESTART, false, error);
437 static int method_reload_or_restart(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
438 return bus_unit_method_start_generic(bus, message, userdata, JOB_RESTART, true, error);
441 static int method_reload_or_try_restart(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
442 return bus_unit_method_start_generic(bus, message, userdata, JOB_TRY_RESTART, true, error);
445 int bus_unit_method_kill(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
456 r = bus_verify_manage_unit_async_for_kill(u->manager, message, error);
460 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
462 r = sd_bus_message_read(message, "si", &swho, &signo);
469 who = kill_who_from_string(swho);
471 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid who argument %s", swho);
474 if (signo <= 0 || signo >= _NSIG)
475 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Signal number out of range.");
477 r = mac_selinux_unit_access_check(u, message, "stop", error);
481 r = unit_kill(u, who, signo, error);
485 return sd_bus_reply_method_return(message, NULL);
488 int bus_unit_method_reset_failed(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
496 r = bus_verify_manage_unit_async(u->manager, message, error);
500 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
502 r = mac_selinux_unit_access_check(u, message, "reload", error);
506 unit_reset_failed(u);
508 return sd_bus_reply_method_return(message, NULL);
511 int bus_unit_method_set_properties(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
519 r = bus_verify_manage_unit_async(u->manager, message, error);
523 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
525 r = sd_bus_message_read(message, "b", &runtime);
529 r = mac_selinux_unit_access_check(u, message, "start", error);
533 r = bus_unit_set_properties(u, message, runtime ? UNIT_RUNTIME : UNIT_PERSISTENT, true, error);
537 return sd_bus_reply_method_return(message, NULL);
540 const sd_bus_vtable bus_unit_vtable[] = {
541 SD_BUS_VTABLE_START(0),
543 SD_BUS_PROPERTY("Id", "s", NULL, offsetof(Unit, id), SD_BUS_VTABLE_PROPERTY_CONST),
544 SD_BUS_PROPERTY("Names", "as", property_get_names, 0, SD_BUS_VTABLE_PROPERTY_CONST),
545 SD_BUS_PROPERTY("Following", "s", property_get_following, 0, 0),
546 SD_BUS_PROPERTY("Requires", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRES]), SD_BUS_VTABLE_PROPERTY_CONST),
547 SD_BUS_PROPERTY("RequiresOverridable", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRES_OVERRIDABLE]), SD_BUS_VTABLE_PROPERTY_CONST),
548 SD_BUS_PROPERTY("Requisite", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUISITE]), SD_BUS_VTABLE_PROPERTY_CONST),
549 SD_BUS_PROPERTY("RequisiteOverridable", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUISITE_OVERRIDABLE]), SD_BUS_VTABLE_PROPERTY_CONST),
550 SD_BUS_PROPERTY("Wants", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_WANTS]), SD_BUS_VTABLE_PROPERTY_CONST),
551 SD_BUS_PROPERTY("BindsTo", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BINDS_TO]), SD_BUS_VTABLE_PROPERTY_CONST),
552 SD_BUS_PROPERTY("PartOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_PART_OF]), SD_BUS_VTABLE_PROPERTY_CONST),
553 SD_BUS_PROPERTY("RequiredBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
554 SD_BUS_PROPERTY("RequiredByOverridable", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRED_BY_OVERRIDABLE]), SD_BUS_VTABLE_PROPERTY_CONST),
555 SD_BUS_PROPERTY("WantedBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_WANTED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
556 SD_BUS_PROPERTY("BoundBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BOUND_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
557 SD_BUS_PROPERTY("ConsistsOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONSISTS_OF]), SD_BUS_VTABLE_PROPERTY_CONST),
558 SD_BUS_PROPERTY("Conflicts", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONFLICTS]), SD_BUS_VTABLE_PROPERTY_CONST),
559 SD_BUS_PROPERTY("ConflictedBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONFLICTED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
560 SD_BUS_PROPERTY("Before", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BEFORE]), SD_BUS_VTABLE_PROPERTY_CONST),
561 SD_BUS_PROPERTY("After", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_AFTER]), SD_BUS_VTABLE_PROPERTY_CONST),
562 SD_BUS_PROPERTY("OnFailure", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_ON_FAILURE]), SD_BUS_VTABLE_PROPERTY_CONST),
563 SD_BUS_PROPERTY("Triggers", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_TRIGGERS]), SD_BUS_VTABLE_PROPERTY_CONST),
564 SD_BUS_PROPERTY("TriggeredBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_TRIGGERED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
565 SD_BUS_PROPERTY("PropagatesReloadTo", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_PROPAGATES_RELOAD_TO]), SD_BUS_VTABLE_PROPERTY_CONST),
566 SD_BUS_PROPERTY("ReloadPropagatedFrom", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_RELOAD_PROPAGATED_FROM]), SD_BUS_VTABLE_PROPERTY_CONST),
567 SD_BUS_PROPERTY("JoinsNamespaceOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_JOINS_NAMESPACE_OF]), SD_BUS_VTABLE_PROPERTY_CONST),
568 SD_BUS_PROPERTY("RequiresMountsFor", "as", NULL, offsetof(Unit, requires_mounts_for), SD_BUS_VTABLE_PROPERTY_CONST),
569 SD_BUS_PROPERTY("Documentation", "as", NULL, offsetof(Unit, documentation), SD_BUS_VTABLE_PROPERTY_CONST),
570 SD_BUS_PROPERTY("Description", "s", property_get_description, 0, SD_BUS_VTABLE_PROPERTY_CONST),
571 SD_BUS_PROPERTY("LoadState", "s", property_get_load_state, offsetof(Unit, load_state), SD_BUS_VTABLE_PROPERTY_CONST),
572 SD_BUS_PROPERTY("ActiveState", "s", property_get_active_state, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
573 SD_BUS_PROPERTY("SubState", "s", property_get_sub_state, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
574 SD_BUS_PROPERTY("FragmentPath", "s", NULL, offsetof(Unit, fragment_path), SD_BUS_VTABLE_PROPERTY_CONST),
575 SD_BUS_PROPERTY("SourcePath", "s", NULL, offsetof(Unit, source_path), SD_BUS_VTABLE_PROPERTY_CONST),
576 SD_BUS_PROPERTY("DropInPaths", "as", NULL, offsetof(Unit, dropin_paths), SD_BUS_VTABLE_PROPERTY_CONST),
577 SD_BUS_PROPERTY("UnitFileState", "s", property_get_unit_file_state, 0, 0),
578 SD_BUS_PROPERTY("UnitFilePreset", "s", property_get_unit_file_preset, 0, 0),
579 BUS_PROPERTY_DUAL_TIMESTAMP("InactiveExitTimestamp", offsetof(Unit, inactive_exit_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
580 BUS_PROPERTY_DUAL_TIMESTAMP("ActiveEnterTimestamp", offsetof(Unit, active_enter_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
581 BUS_PROPERTY_DUAL_TIMESTAMP("ActiveExitTimestamp", offsetof(Unit, active_exit_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
582 BUS_PROPERTY_DUAL_TIMESTAMP("InactiveEnterTimestamp", offsetof(Unit, inactive_enter_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
583 SD_BUS_PROPERTY("CanStart", "b", property_get_can_start, 0, SD_BUS_VTABLE_PROPERTY_CONST),
584 SD_BUS_PROPERTY("CanStop", "b", property_get_can_stop, 0, SD_BUS_VTABLE_PROPERTY_CONST),
585 SD_BUS_PROPERTY("CanReload", "b", property_get_can_reload, 0, SD_BUS_VTABLE_PROPERTY_CONST),
586 SD_BUS_PROPERTY("CanIsolate", "b", property_get_can_isolate, 0, SD_BUS_VTABLE_PROPERTY_CONST),
587 SD_BUS_PROPERTY("Job", "(uo)", property_get_job, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
588 SD_BUS_PROPERTY("StopWhenUnneeded", "b", bus_property_get_bool, offsetof(Unit, stop_when_unneeded), SD_BUS_VTABLE_PROPERTY_CONST),
589 SD_BUS_PROPERTY("RefuseManualStart", "b", bus_property_get_bool, offsetof(Unit, refuse_manual_start), SD_BUS_VTABLE_PROPERTY_CONST),
590 SD_BUS_PROPERTY("RefuseManualStop", "b", bus_property_get_bool, offsetof(Unit, refuse_manual_stop), SD_BUS_VTABLE_PROPERTY_CONST),
591 SD_BUS_PROPERTY("AllowIsolate", "b", bus_property_get_bool, offsetof(Unit, allow_isolate), SD_BUS_VTABLE_PROPERTY_CONST),
592 SD_BUS_PROPERTY("DefaultDependencies", "b", bus_property_get_bool, offsetof(Unit, default_dependencies), SD_BUS_VTABLE_PROPERTY_CONST),
593 SD_BUS_PROPERTY("OnFailureJobMode", "s", property_get_job_mode, offsetof(Unit, on_failure_job_mode), SD_BUS_VTABLE_PROPERTY_CONST),
594 SD_BUS_PROPERTY("IgnoreOnIsolate", "b", bus_property_get_bool, offsetof(Unit, ignore_on_isolate), SD_BUS_VTABLE_PROPERTY_CONST),
595 SD_BUS_PROPERTY("IgnoreOnSnapshot", "b", bus_property_get_bool, offsetof(Unit, ignore_on_snapshot), SD_BUS_VTABLE_PROPERTY_CONST),
596 SD_BUS_PROPERTY("NeedDaemonReload", "b", property_get_need_daemon_reload, 0, SD_BUS_VTABLE_PROPERTY_CONST),
597 SD_BUS_PROPERTY("JobTimeoutUSec", "t", bus_property_get_usec, offsetof(Unit, job_timeout), SD_BUS_VTABLE_PROPERTY_CONST),
598 SD_BUS_PROPERTY("JobTimeoutAction", "s", property_get_failure_action, offsetof(Unit, job_timeout_action), SD_BUS_VTABLE_PROPERTY_CONST),
599 SD_BUS_PROPERTY("JobTimeoutRebootArgument", "s", NULL, offsetof(Unit, job_timeout_reboot_arg), SD_BUS_VTABLE_PROPERTY_CONST),
600 SD_BUS_PROPERTY("ConditionResult", "b", bus_property_get_bool, offsetof(Unit, condition_result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
601 SD_BUS_PROPERTY("AssertResult", "b", bus_property_get_bool, offsetof(Unit, assert_result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
602 BUS_PROPERTY_DUAL_TIMESTAMP("ConditionTimestamp", offsetof(Unit, condition_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
603 BUS_PROPERTY_DUAL_TIMESTAMP("AssertTimestamp", offsetof(Unit, assert_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
604 SD_BUS_PROPERTY("Conditions", "a(sbbsi)", property_get_conditions, offsetof(Unit, conditions), 0),
605 SD_BUS_PROPERTY("Asserts", "a(sbbsi)", property_get_conditions, offsetof(Unit, asserts), 0),
606 SD_BUS_PROPERTY("LoadError", "(ss)", property_get_load_error, 0, SD_BUS_VTABLE_PROPERTY_CONST),
607 SD_BUS_PROPERTY("Transient", "b", bus_property_get_bool, offsetof(Unit, transient), SD_BUS_VTABLE_PROPERTY_CONST),
609 SD_BUS_METHOD("Start", "s", "o", method_start, 0),
610 SD_BUS_METHOD("Stop", "s", "o", method_stop, 0),
611 SD_BUS_METHOD("Reload", "s", "o", method_reload, 0),
612 SD_BUS_METHOD("Restart", "s", "o", method_restart, 0),
613 SD_BUS_METHOD("TryRestart", "s", "o", method_try_restart, 0),
614 SD_BUS_METHOD("ReloadOrRestart", "s", "o", method_reload_or_restart, 0),
615 SD_BUS_METHOD("ReloadOrTryRestart", "s", "o", method_reload_or_try_restart, 0),
616 SD_BUS_METHOD("Kill", "si", NULL, bus_unit_method_kill, 0),
617 SD_BUS_METHOD("ResetFailed", NULL, NULL, bus_unit_method_reset_failed, 0),
618 SD_BUS_METHOD("SetProperties", "ba(sv)", NULL, bus_unit_method_set_properties, 0),
623 static int property_get_slice(
626 const char *interface,
627 const char *property,
628 sd_bus_message *reply,
630 sd_bus_error *error) {
638 return sd_bus_message_append(reply, "s", unit_slice_name(u));
641 static int property_get_current_memory(
644 const char *interface,
645 const char *property,
646 sd_bus_message *reply,
648 sd_bus_error *error) {
651 uint64_t sz = (uint64_t) -1;
658 if (u->cgroup_path &&
659 (u->cgroup_realized_mask & CGROUP_MEMORY)) {
660 _cleanup_free_ char *v = NULL;
662 r = cg_get_attribute("memory", u->cgroup_path, "memory.usage_in_bytes", &v);
663 if (r < 0 && r != -ENOENT)
664 log_unit_warning_errno(u->id, r, "Couldn't read memory.usage_in_bytes attribute: %m");
667 r = safe_atou64(v, &sz);
669 log_unit_warning_errno(u->id, r, "Failed to parse memory.usage_in_bytes attribute: %m");
673 return sd_bus_message_append(reply, "t", sz);
676 const sd_bus_vtable bus_unit_cgroup_vtable[] = {
677 SD_BUS_VTABLE_START(0),
678 SD_BUS_PROPERTY("Slice", "s", property_get_slice, 0, 0),
679 SD_BUS_PROPERTY("ControlGroup", "s", NULL, offsetof(Unit, cgroup_path), 0),
680 SD_BUS_PROPERTY("MemoryCurrent", "t", property_get_current_memory, 0, 0),
684 static int send_new_signal(sd_bus *bus, void *userdata) {
685 _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
686 _cleanup_free_ char *p = NULL;
693 p = unit_dbus_path(u);
697 r = sd_bus_message_new_signal(
700 "/org/freedesktop/systemd1",
701 "org.freedesktop.systemd1.Manager",
706 r = sd_bus_message_append(m, "so", u->id, p);
710 return sd_bus_send(bus, m, NULL);
713 static int send_changed_signal(sd_bus *bus, void *userdata) {
714 _cleanup_free_ char *p = NULL;
721 p = unit_dbus_path(u);
725 /* Send a properties changed signal. First for the specific
726 * type, then for the generic unit. The clients may rely on
727 * this order to get atomic behavior if needed. */
729 r = sd_bus_emit_properties_changed_strv(
731 UNIT_VTABLE(u)->bus_interface,
736 return sd_bus_emit_properties_changed_strv(
738 "org.freedesktop.systemd1.Unit",
742 void bus_unit_send_change_signal(Unit *u) {
746 if (u->in_dbus_queue) {
747 LIST_REMOVE(dbus_queue, u->manager->dbus_unit_queue, u);
748 u->in_dbus_queue = false;
754 r = bus_foreach_bus(u->manager, NULL, u->sent_dbus_new_signal ? send_changed_signal : send_new_signal, u);
756 log_debug_errno(r, "Failed to send unit change signal for %s: %m", u->id);
758 u->sent_dbus_new_signal = true;
761 static int send_removed_signal(sd_bus *bus, void *userdata) {
762 _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
763 _cleanup_free_ char *p = NULL;
770 p = unit_dbus_path(u);
774 r = sd_bus_message_new_signal(
777 "/org/freedesktop/systemd1",
778 "org.freedesktop.systemd1.Manager",
783 r = sd_bus_message_append(m, "so", u->id, p);
787 return sd_bus_send(bus, m, NULL);
790 void bus_unit_send_removed_signal(Unit *u) {
794 if (!u->sent_dbus_new_signal)
795 bus_unit_send_change_signal(u);
800 r = bus_foreach_bus(u->manager, NULL, send_removed_signal, u);
802 log_debug_errno(r, "Failed to send unit remove signal for %s: %m", u->id);
805 int bus_unit_queue_job(
807 sd_bus_message *message,
811 bool reload_if_possible,
812 sd_bus_error *error) {
814 _cleanup_free_ char *path = NULL;
821 assert(type >= 0 && type < _JOB_TYPE_MAX);
822 assert(mode >= 0 && mode < _JOB_MODE_MAX);
824 if (reload_if_possible && unit_can_reload(u)) {
825 if (type == JOB_RESTART)
826 type = JOB_RELOAD_OR_START;
827 else if (type == JOB_TRY_RESTART)
831 r = mac_selinux_unit_access_check(
833 (type == JOB_START || type == JOB_RESTART || type == JOB_TRY_RESTART) ? "start" :
834 type == JOB_STOP ? "stop" : "reload", error);
838 if (type == JOB_STOP &&
839 (u->load_state == UNIT_NOT_FOUND || u->load_state == UNIT_ERROR) &&
840 unit_active_state(u) == UNIT_INACTIVE)
841 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s not loaded.", u->id);
843 if ((type == JOB_START && u->refuse_manual_start) ||
844 (type == JOB_STOP && u->refuse_manual_stop) ||
845 ((type == JOB_RESTART || type == JOB_TRY_RESTART) && (u->refuse_manual_start || u->refuse_manual_stop)))
846 return sd_bus_error_setf(error, BUS_ERROR_ONLY_BY_DEPENDENCY, "Operation refused, unit %s may be requested by dependency only.", u->id);
848 r = manager_add_job(u->manager, type, u, mode, true, error, &j);
852 if (bus == u->manager->api_bus) {
854 r = sd_bus_track_new(bus, &j->clients, NULL, NULL);
859 r = sd_bus_track_add_sender(j->clients, message);
864 path = job_dbus_path(j);
868 return sd_bus_reply_method_return(message, "o", path);
871 static int bus_unit_set_transient_property(
874 sd_bus_message *message,
875 UnitSetPropertiesMode mode,
876 sd_bus_error *error) {
884 if (streq(name, "Description")) {
887 r = sd_bus_message_read(message, "s", &d);
891 if (mode != UNIT_CHECK) {
892 r = unit_set_description(u, d);
896 unit_write_drop_in_format(u, mode, name, "[Unit]\nDescription=%s\n", d);
901 } else if (streq(name, "DefaultDependencies")) {
904 r = sd_bus_message_read(message, "b", &b);
908 if (mode != UNIT_CHECK) {
909 u->default_dependencies = b;
910 unit_write_drop_in_format(u, mode, name, "[Unit]\nDefaultDependencies=%s\n", yes_no(b));
915 } else if (streq(name, "Slice") && unit_get_cgroup_context(u)) {
918 r = sd_bus_message_read(message, "s", &s);
922 if (!unit_name_is_valid(s, TEMPLATE_INVALID) || !endswith(s, ".slice"))
923 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid slice name %s", s);
926 if (mode != UNIT_CHECK) {
927 unit_ref_unset(&u->slice);
928 unit_remove_drop_in(u, mode, name);
933 r = manager_load_unit(u->manager, s, NULL, error, &slice);
937 if (slice->type != UNIT_SLICE)
940 if (mode != UNIT_CHECK) {
941 unit_ref_set(&u->slice, slice);
942 unit_write_drop_in_private_format(u, mode, name, "Slice=%s\n", s);
947 } else if (STR_IN_SET(name,
948 "Requires", "RequiresOverridable",
949 "Requisite", "RequisiteOverridable",
955 "PropagatesReloadTo", "ReloadPropagatedFrom",
961 d = unit_dependency_from_string(name);
965 r = sd_bus_message_enter_container(message, 'a', "s");
969 while ((r = sd_bus_message_read(message, "s", &other)) > 0) {
970 if (!unit_name_is_valid(other, TEMPLATE_INVALID))
971 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit name %s", other);
973 if (mode != UNIT_CHECK) {
974 _cleanup_free_ char *label = NULL;
976 r = unit_add_dependency_by_name(u, d, other, NULL, true);
980 label = strjoin(name, "-", other, NULL);
984 unit_write_drop_in_format(u, mode, label, "[Unit]\n%s=%s\n", name, other);
991 r = sd_bus_message_exit_container(message);
1001 int bus_unit_set_properties(
1003 sd_bus_message *message,
1004 UnitSetPropertiesMode mode,
1006 sd_bus_error *error) {
1008 bool for_real = false;
1015 /* We iterate through the array twice. First run we just check
1016 * if all passed data is valid, second run actually applies
1017 * it. This is to implement transaction-like behaviour without
1018 * actually providing full transactions. */
1020 r = sd_bus_message_enter_container(message, 'a', "(sv)");
1027 r = sd_bus_message_enter_container(message, 'r', "sv");
1031 if (for_real || mode == UNIT_CHECK)
1034 /* Reached EOF. Let's try again, and this time for realz... */
1035 r = sd_bus_message_rewind(message, false);
1043 r = sd_bus_message_read(message, "s", &name);
1047 if (!UNIT_VTABLE(u)->bus_set_property)
1048 return sd_bus_error_setf(error, SD_BUS_ERROR_PROPERTY_READ_ONLY, "Objects of this type do not support setting properties.");
1050 r = sd_bus_message_enter_container(message, 'v', NULL);
1054 r = UNIT_VTABLE(u)->bus_set_property(u, name, message, for_real ? mode : UNIT_CHECK, error);
1055 if (r == 0 && u->transient && u->load_state == UNIT_STUB)
1056 r = bus_unit_set_transient_property(u, name, message, for_real ? mode : UNIT_CHECK, error);
1060 return sd_bus_error_setf(error, SD_BUS_ERROR_PROPERTY_READ_ONLY, "Cannot set property %s, or unknown property.", name);
1062 r = sd_bus_message_exit_container(message);
1066 r = sd_bus_message_exit_container(message);
1073 r = sd_bus_message_exit_container(message);
1077 if (commit && n > 0 && UNIT_VTABLE(u)->bus_commit_properties)
1078 UNIT_VTABLE(u)->bus_commit_properties(u);