2 This file is part of systemd.
4 Copyright 2010 Lennart Poettering
6 systemd is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
9 (at your option) any later version.
11 systemd is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with systemd; If not, see <http://www.gnu.org/licenses/>.
22 #include "alloc-util.h"
23 #include "bus-common-errors.h"
24 #include "cgroup-util.h"
25 #include "dbus-unit.h"
28 #include "locale-util.h"
30 #include "process-util.h"
31 #include "selinux-access.h"
32 #include "signal-util.h"
34 #include "string-util.h"
36 #include "user-util.h"
38 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_load_state
, unit_load_state
, UnitLoadState
);
39 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_job_mode
, job_mode
, JobMode
);
40 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_emergency_action
, emergency_action
, EmergencyAction
);
42 static int property_get_names(
45 const char *interface
,
47 sd_bus_message
*reply
,
49 sd_bus_error
*error
) {
60 r
= sd_bus_message_open_container(reply
, 'a', "s");
64 SET_FOREACH(t
, u
->names
, i
) {
65 r
= sd_bus_message_append(reply
, "s", t
);
70 return sd_bus_message_close_container(reply
);
73 static int property_get_following(
76 const char *interface
,
78 sd_bus_message
*reply
,
80 sd_bus_error
*error
) {
82 Unit
*u
= userdata
, *f
;
88 f
= unit_following(u
);
89 return sd_bus_message_append(reply
, "s", f
? f
->id
: "");
92 static int property_get_dependencies(
95 const char *interface
,
97 sd_bus_message
*reply
,
99 sd_bus_error
*error
) {
101 Set
*s
= *(Set
**) userdata
;
109 r
= sd_bus_message_open_container(reply
, 'a', "s");
113 SET_FOREACH(u
, s
, j
) {
114 r
= sd_bus_message_append(reply
, "s", u
->id
);
119 return sd_bus_message_close_container(reply
);
122 static int property_get_obsolete_dependencies(
125 const char *interface
,
126 const char *property
,
127 sd_bus_message
*reply
,
129 sd_bus_error
*error
) {
134 /* For dependency types we don't support anymore always return an empty array */
135 return sd_bus_message_append(reply
, "as", 0);
138 static int property_get_description(
141 const char *interface
,
142 const char *property
,
143 sd_bus_message
*reply
,
145 sd_bus_error
*error
) {
153 return sd_bus_message_append(reply
, "s", unit_description(u
));
156 static int property_get_active_state(
159 const char *interface
,
160 const char *property
,
161 sd_bus_message
*reply
,
163 sd_bus_error
*error
) {
171 return sd_bus_message_append(reply
, "s", unit_active_state_to_string(unit_active_state(u
)));
174 static int property_get_sub_state(
177 const char *interface
,
178 const char *property
,
179 sd_bus_message
*reply
,
181 sd_bus_error
*error
) {
189 return sd_bus_message_append(reply
, "s", unit_sub_state_to_string(u
));
192 static int property_get_unit_file_preset(
195 const char *interface
,
196 const char *property
,
197 sd_bus_message
*reply
,
199 sd_bus_error
*error
) {
208 r
= unit_get_unit_file_preset(u
);
210 return sd_bus_message_append(reply
, "s",
212 r
> 0 ? "enabled" : "disabled");
215 static int property_get_unit_file_state(
218 const char *interface
,
219 const char *property
,
220 sd_bus_message
*reply
,
222 sd_bus_error
*error
) {
230 return sd_bus_message_append(reply
, "s", unit_file_state_to_string(unit_get_unit_file_state(u
)));
233 static int property_get_can_start(
236 const char *interface
,
237 const char *property
,
238 sd_bus_message
*reply
,
240 sd_bus_error
*error
) {
248 return sd_bus_message_append(reply
, "b", unit_can_start(u
) && !u
->refuse_manual_start
);
251 static int property_get_can_stop(
254 const char *interface
,
255 const char *property
,
256 sd_bus_message
*reply
,
258 sd_bus_error
*error
) {
266 /* On the lower levels we assume that every unit we can start
267 * we can also stop */
269 return sd_bus_message_append(reply
, "b", unit_can_start(u
) && !u
->refuse_manual_stop
);
272 static int property_get_can_reload(
275 const char *interface
,
276 const char *property
,
277 sd_bus_message
*reply
,
279 sd_bus_error
*error
) {
287 return sd_bus_message_append(reply
, "b", unit_can_reload(u
));
290 static int property_get_can_isolate(
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_can_isolate(u
) && !u
->refuse_manual_start
);
308 static int property_get_job(
311 const char *interface
,
312 const char *property
,
313 sd_bus_message
*reply
,
315 sd_bus_error
*error
) {
317 _cleanup_free_
char *p
= NULL
;
325 return sd_bus_message_append(reply
, "(uo)", 0, "/");
327 p
= job_dbus_path(u
->job
);
331 return sd_bus_message_append(reply
, "(uo)", u
->job
->id
, p
);
334 static int property_get_need_daemon_reload(
337 const char *interface
,
338 const char *property
,
339 sd_bus_message
*reply
,
341 sd_bus_error
*error
) {
349 return sd_bus_message_append(reply
, "b", unit_need_daemon_reload(u
));
352 static int property_get_conditions(
355 const char *interface
,
356 const char *property
,
357 sd_bus_message
*reply
,
359 sd_bus_error
*error
) {
361 const char *(*to_string
)(ConditionType type
) = NULL
;
362 Condition
**list
= userdata
, *c
;
369 to_string
= streq(property
, "Asserts") ? assert_type_to_string
: condition_type_to_string
;
371 r
= sd_bus_message_open_container(reply
, 'a', "(sbbsi)");
375 LIST_FOREACH(conditions
, c
, *list
) {
379 c
->result
== CONDITION_UNTESTED
? 0 :
380 c
->result
== CONDITION_SUCCEEDED
? 1 : -1;
382 r
= sd_bus_message_append(reply
, "(sbbsi)",
384 c
->trigger
, c
->negate
,
385 c
->parameter
, tristate
);
391 return sd_bus_message_close_container(reply
);
394 static int property_get_load_error(
397 const char *interface
,
398 const char *property
,
399 sd_bus_message
*reply
,
401 sd_bus_error
*error
) {
403 _cleanup_(sd_bus_error_free
) sd_bus_error e
= SD_BUS_ERROR_NULL
;
410 if (u
->load_error
!= 0)
411 sd_bus_error_set_errno(&e
, u
->load_error
);
413 return sd_bus_message_append(reply
, "(ss)", e
.name
, e
.message
);
416 static int bus_verify_manage_units_async_full(
420 const char *polkit_message
,
422 sd_bus_message
*call
,
423 sd_bus_error
*error
) {
425 const char *details
[9] = {
430 if (polkit_message
) {
431 details
[4] = "polkit.message";
432 details
[5] = polkit_message
;
433 details
[6] = "polkit.gettext_domain";
434 details
[7] = GETTEXT_PACKAGE
;
437 return bus_verify_polkit_async(
440 "org.freedesktop.systemd1.manage-units",
444 &u
->manager
->polkit_registry
,
448 int bus_unit_method_start_generic(
449 sd_bus_message
*message
,
452 bool reload_if_possible
,
453 sd_bus_error
*error
) {
457 _cleanup_free_
char *verb
= NULL
;
458 static const char *const polkit_message_for_job
[_JOB_TYPE_MAX
] = {
459 [JOB_START
] = N_("Authentication is required to start '$(unit)'."),
460 [JOB_STOP
] = N_("Authentication is required to stop '$(unit)'."),
461 [JOB_RELOAD
] = N_("Authentication is required to reload '$(unit)'."),
462 [JOB_RESTART
] = N_("Authentication is required to restart '$(unit)'."),
463 [JOB_TRY_RESTART
] = N_("Authentication is required to restart '$(unit)'."),
469 assert(job_type
>= 0 && job_type
< _JOB_TYPE_MAX
);
471 r
= mac_selinux_unit_access_check(
473 job_type_to_access_method(job_type
),
478 r
= sd_bus_message_read(message
, "s", &smode
);
482 mode
= job_mode_from_string(smode
);
484 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Job mode %s invalid", smode
);
486 if (reload_if_possible
)
487 verb
= strjoin("reload-or-", job_type_to_string(job_type
), NULL
);
489 verb
= strdup(job_type_to_string(job_type
));
493 r
= bus_verify_manage_units_async_full(
497 job_type
< _JOB_TYPE_MAX
? polkit_message_for_job
[job_type
] : NULL
,
504 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
506 return bus_unit_queue_job(message
, u
, job_type
, mode
, reload_if_possible
, error
);
509 static int method_start(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
510 return bus_unit_method_start_generic(message
, userdata
, JOB_START
, false, error
);
513 static int method_stop(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
514 return bus_unit_method_start_generic(message
, userdata
, JOB_STOP
, false, error
);
517 static int method_reload(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
518 return bus_unit_method_start_generic(message
, userdata
, JOB_RELOAD
, false, error
);
521 static int method_restart(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
522 return bus_unit_method_start_generic(message
, userdata
, JOB_RESTART
, false, error
);
525 static int method_try_restart(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
526 return bus_unit_method_start_generic(message
, userdata
, JOB_TRY_RESTART
, false, error
);
529 static int method_reload_or_restart(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
530 return bus_unit_method_start_generic(message
, userdata
, JOB_RESTART
, true, error
);
533 static int method_reload_or_try_restart(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
534 return bus_unit_method_start_generic(message
, userdata
, JOB_TRY_RESTART
, true, error
);
537 int bus_unit_method_kill(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
547 r
= mac_selinux_unit_access_check(u
, message
, "stop", error
);
551 r
= sd_bus_message_read(message
, "si", &swho
, &signo
);
558 who
= kill_who_from_string(swho
);
560 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid who argument %s", swho
);
563 if (!SIGNAL_VALID(signo
))
564 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Signal number out of range.");
566 r
= bus_verify_manage_units_async_full(
570 N_("Authentication is required to kill '$(unit)'."),
577 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
579 r
= unit_kill(u
, who
, signo
, error
);
583 return sd_bus_reply_method_return(message
, NULL
);
586 int bus_unit_method_reset_failed(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
593 r
= mac_selinux_unit_access_check(u
, message
, "reload", error
);
597 r
= bus_verify_manage_units_async_full(
601 N_("Authentication is required to reset the \"failed\" state of '$(unit)'."),
608 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
610 unit_reset_failed(u
);
612 return sd_bus_reply_method_return(message
, NULL
);
615 int bus_unit_method_set_properties(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
622 r
= mac_selinux_unit_access_check(u
, message
, "start", error
);
626 r
= sd_bus_message_read(message
, "b", &runtime
);
630 r
= bus_verify_manage_units_async_full(
634 N_("Authentication is required to set properties on '$(unit)'."),
641 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
643 r
= bus_unit_set_properties(u
, message
, runtime
? UNIT_RUNTIME
: UNIT_PERSISTENT
, true, error
);
647 return sd_bus_reply_method_return(message
, NULL
);
650 int bus_unit_method_ref(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
657 r
= mac_selinux_unit_access_check(u
, message
, "start", error
);
661 r
= bus_verify_manage_units_async_full(
672 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
674 r
= bus_unit_track_add_sender(u
, message
);
678 return sd_bus_reply_method_return(message
, NULL
);
681 int bus_unit_method_unref(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
688 r
= bus_unit_track_remove_sender(u
, message
);
690 return sd_bus_error_setf(error
, BUS_ERROR_NOT_REFERENCED
, "Unit has not been referenced yet.");
694 return sd_bus_reply_method_return(message
, NULL
);
697 const sd_bus_vtable bus_unit_vtable
[] = {
698 SD_BUS_VTABLE_START(0),
700 SD_BUS_PROPERTY("Id", "s", NULL
, offsetof(Unit
, id
), SD_BUS_VTABLE_PROPERTY_CONST
),
701 SD_BUS_PROPERTY("Names", "as", property_get_names
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
702 SD_BUS_PROPERTY("Following", "s", property_get_following
, 0, 0),
703 SD_BUS_PROPERTY("Requires", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_REQUIRES
]), SD_BUS_VTABLE_PROPERTY_CONST
),
704 SD_BUS_PROPERTY("Requisite", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_REQUISITE
]), SD_BUS_VTABLE_PROPERTY_CONST
),
705 SD_BUS_PROPERTY("Wants", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_WANTS
]), SD_BUS_VTABLE_PROPERTY_CONST
),
706 SD_BUS_PROPERTY("BindsTo", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_BINDS_TO
]), SD_BUS_VTABLE_PROPERTY_CONST
),
707 SD_BUS_PROPERTY("PartOf", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_PART_OF
]), SD_BUS_VTABLE_PROPERTY_CONST
),
708 SD_BUS_PROPERTY("RequiredBy", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_REQUIRED_BY
]), SD_BUS_VTABLE_PROPERTY_CONST
),
709 SD_BUS_PROPERTY("RequisiteOf", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_REQUISITE_OF
]), SD_BUS_VTABLE_PROPERTY_CONST
),
710 SD_BUS_PROPERTY("WantedBy", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_WANTED_BY
]), SD_BUS_VTABLE_PROPERTY_CONST
),
711 SD_BUS_PROPERTY("BoundBy", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_BOUND_BY
]), SD_BUS_VTABLE_PROPERTY_CONST
),
712 SD_BUS_PROPERTY("ConsistsOf", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_CONSISTS_OF
]), SD_BUS_VTABLE_PROPERTY_CONST
),
713 SD_BUS_PROPERTY("Conflicts", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_CONFLICTS
]), SD_BUS_VTABLE_PROPERTY_CONST
),
714 SD_BUS_PROPERTY("ConflictedBy", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_CONFLICTED_BY
]), SD_BUS_VTABLE_PROPERTY_CONST
),
715 SD_BUS_PROPERTY("Before", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_BEFORE
]), SD_BUS_VTABLE_PROPERTY_CONST
),
716 SD_BUS_PROPERTY("After", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_AFTER
]), SD_BUS_VTABLE_PROPERTY_CONST
),
717 SD_BUS_PROPERTY("OnFailure", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_ON_FAILURE
]), SD_BUS_VTABLE_PROPERTY_CONST
),
718 SD_BUS_PROPERTY("Triggers", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_TRIGGERS
]), SD_BUS_VTABLE_PROPERTY_CONST
),
719 SD_BUS_PROPERTY("TriggeredBy", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_TRIGGERED_BY
]), SD_BUS_VTABLE_PROPERTY_CONST
),
720 SD_BUS_PROPERTY("PropagatesReloadTo", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_PROPAGATES_RELOAD_TO
]), SD_BUS_VTABLE_PROPERTY_CONST
),
721 SD_BUS_PROPERTY("ReloadPropagatedFrom", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_RELOAD_PROPAGATED_FROM
]), SD_BUS_VTABLE_PROPERTY_CONST
),
722 SD_BUS_PROPERTY("JoinsNamespaceOf", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_JOINS_NAMESPACE_OF
]), SD_BUS_VTABLE_PROPERTY_CONST
),
723 SD_BUS_PROPERTY("RequiresMountsFor", "as", NULL
, offsetof(Unit
, requires_mounts_for
), SD_BUS_VTABLE_PROPERTY_CONST
),
724 SD_BUS_PROPERTY("Documentation", "as", NULL
, offsetof(Unit
, documentation
), SD_BUS_VTABLE_PROPERTY_CONST
),
725 SD_BUS_PROPERTY("Description", "s", property_get_description
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
726 SD_BUS_PROPERTY("LoadState", "s", property_get_load_state
, offsetof(Unit
, load_state
), SD_BUS_VTABLE_PROPERTY_CONST
),
727 SD_BUS_PROPERTY("ActiveState", "s", property_get_active_state
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
728 SD_BUS_PROPERTY("SubState", "s", property_get_sub_state
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
729 SD_BUS_PROPERTY("FragmentPath", "s", NULL
, offsetof(Unit
, fragment_path
), SD_BUS_VTABLE_PROPERTY_CONST
),
730 SD_BUS_PROPERTY("SourcePath", "s", NULL
, offsetof(Unit
, source_path
), SD_BUS_VTABLE_PROPERTY_CONST
),
731 SD_BUS_PROPERTY("DropInPaths", "as", NULL
, offsetof(Unit
, dropin_paths
), SD_BUS_VTABLE_PROPERTY_CONST
),
732 SD_BUS_PROPERTY("UnitFileState", "s", property_get_unit_file_state
, 0, 0),
733 SD_BUS_PROPERTY("UnitFilePreset", "s", property_get_unit_file_preset
, 0, 0),
734 BUS_PROPERTY_DUAL_TIMESTAMP("StateChangeTimestamp", offsetof(Unit
, state_change_timestamp
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
735 BUS_PROPERTY_DUAL_TIMESTAMP("InactiveExitTimestamp", offsetof(Unit
, inactive_exit_timestamp
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
736 BUS_PROPERTY_DUAL_TIMESTAMP("ActiveEnterTimestamp", offsetof(Unit
, active_enter_timestamp
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
737 BUS_PROPERTY_DUAL_TIMESTAMP("ActiveExitTimestamp", offsetof(Unit
, active_exit_timestamp
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
738 BUS_PROPERTY_DUAL_TIMESTAMP("InactiveEnterTimestamp", offsetof(Unit
, inactive_enter_timestamp
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
739 SD_BUS_PROPERTY("CanStart", "b", property_get_can_start
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
740 SD_BUS_PROPERTY("CanStop", "b", property_get_can_stop
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
741 SD_BUS_PROPERTY("CanReload", "b", property_get_can_reload
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
742 SD_BUS_PROPERTY("CanIsolate", "b", property_get_can_isolate
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
743 SD_BUS_PROPERTY("Job", "(uo)", property_get_job
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
744 SD_BUS_PROPERTY("StopWhenUnneeded", "b", bus_property_get_bool
, offsetof(Unit
, stop_when_unneeded
), SD_BUS_VTABLE_PROPERTY_CONST
),
745 SD_BUS_PROPERTY("RefuseManualStart", "b", bus_property_get_bool
, offsetof(Unit
, refuse_manual_start
), SD_BUS_VTABLE_PROPERTY_CONST
),
746 SD_BUS_PROPERTY("RefuseManualStop", "b", bus_property_get_bool
, offsetof(Unit
, refuse_manual_stop
), SD_BUS_VTABLE_PROPERTY_CONST
),
747 SD_BUS_PROPERTY("AllowIsolate", "b", bus_property_get_bool
, offsetof(Unit
, allow_isolate
), SD_BUS_VTABLE_PROPERTY_CONST
),
748 SD_BUS_PROPERTY("DefaultDependencies", "b", bus_property_get_bool
, offsetof(Unit
, default_dependencies
), SD_BUS_VTABLE_PROPERTY_CONST
),
749 SD_BUS_PROPERTY("OnFailureJobMode", "s", property_get_job_mode
, offsetof(Unit
, on_failure_job_mode
), SD_BUS_VTABLE_PROPERTY_CONST
),
750 SD_BUS_PROPERTY("IgnoreOnIsolate", "b", bus_property_get_bool
, offsetof(Unit
, ignore_on_isolate
), SD_BUS_VTABLE_PROPERTY_CONST
),
751 SD_BUS_PROPERTY("NeedDaemonReload", "b", property_get_need_daemon_reload
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
752 SD_BUS_PROPERTY("JobTimeoutUSec", "t", bus_property_get_usec
, offsetof(Unit
, job_timeout
), SD_BUS_VTABLE_PROPERTY_CONST
),
753 SD_BUS_PROPERTY("JobTimeoutAction", "s", property_get_emergency_action
, offsetof(Unit
, job_timeout_action
), SD_BUS_VTABLE_PROPERTY_CONST
),
754 SD_BUS_PROPERTY("JobTimeoutRebootArgument", "s", NULL
, offsetof(Unit
, job_timeout_reboot_arg
), SD_BUS_VTABLE_PROPERTY_CONST
),
755 SD_BUS_PROPERTY("ConditionResult", "b", bus_property_get_bool
, offsetof(Unit
, condition_result
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
756 SD_BUS_PROPERTY("AssertResult", "b", bus_property_get_bool
, offsetof(Unit
, assert_result
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
757 BUS_PROPERTY_DUAL_TIMESTAMP("ConditionTimestamp", offsetof(Unit
, condition_timestamp
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
758 BUS_PROPERTY_DUAL_TIMESTAMP("AssertTimestamp", offsetof(Unit
, assert_timestamp
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
759 SD_BUS_PROPERTY("Conditions", "a(sbbsi)", property_get_conditions
, offsetof(Unit
, conditions
), 0),
760 SD_BUS_PROPERTY("Asserts", "a(sbbsi)", property_get_conditions
, offsetof(Unit
, asserts
), 0),
761 SD_BUS_PROPERTY("LoadError", "(ss)", property_get_load_error
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
762 SD_BUS_PROPERTY("Transient", "b", bus_property_get_bool
, offsetof(Unit
, transient
), SD_BUS_VTABLE_PROPERTY_CONST
),
763 SD_BUS_PROPERTY("StartLimitIntervalSec", "t", bus_property_get_usec
, offsetof(Unit
, start_limit
.interval
), SD_BUS_VTABLE_PROPERTY_CONST
),
764 SD_BUS_PROPERTY("StartLimitBurst", "u", bus_property_get_unsigned
, offsetof(Unit
, start_limit
.burst
), SD_BUS_VTABLE_PROPERTY_CONST
),
765 SD_BUS_PROPERTY("StartLimitAction", "s", property_get_emergency_action
, offsetof(Unit
, start_limit_action
), SD_BUS_VTABLE_PROPERTY_CONST
),
766 SD_BUS_PROPERTY("RebootArgument", "s", NULL
, offsetof(Unit
, reboot_arg
), SD_BUS_VTABLE_PROPERTY_CONST
),
767 SD_BUS_PROPERTY("InvocationID", "ay", bus_property_get_id128
, offsetof(Unit
, invocation_id
), 0),
769 SD_BUS_METHOD("Start", "s", "o", method_start
, SD_BUS_VTABLE_UNPRIVILEGED
),
770 SD_BUS_METHOD("Stop", "s", "o", method_stop
, SD_BUS_VTABLE_UNPRIVILEGED
),
771 SD_BUS_METHOD("Reload", "s", "o", method_reload
, SD_BUS_VTABLE_UNPRIVILEGED
),
772 SD_BUS_METHOD("Restart", "s", "o", method_restart
, SD_BUS_VTABLE_UNPRIVILEGED
),
773 SD_BUS_METHOD("TryRestart", "s", "o", method_try_restart
, SD_BUS_VTABLE_UNPRIVILEGED
),
774 SD_BUS_METHOD("ReloadOrRestart", "s", "o", method_reload_or_restart
, SD_BUS_VTABLE_UNPRIVILEGED
),
775 SD_BUS_METHOD("ReloadOrTryRestart", "s", "o", method_reload_or_try_restart
, SD_BUS_VTABLE_UNPRIVILEGED
),
776 SD_BUS_METHOD("Kill", "si", NULL
, bus_unit_method_kill
, SD_BUS_VTABLE_UNPRIVILEGED
),
777 SD_BUS_METHOD("ResetFailed", NULL
, NULL
, bus_unit_method_reset_failed
, SD_BUS_VTABLE_UNPRIVILEGED
),
778 SD_BUS_METHOD("SetProperties", "ba(sv)", NULL
, bus_unit_method_set_properties
, SD_BUS_VTABLE_UNPRIVILEGED
),
779 SD_BUS_METHOD("Ref", NULL
, NULL
, bus_unit_method_ref
, SD_BUS_VTABLE_UNPRIVILEGED
),
780 SD_BUS_METHOD("Unref", NULL
, NULL
, bus_unit_method_unref
, SD_BUS_VTABLE_UNPRIVILEGED
),
782 /* Obsolete properties or obsolete alias names */
783 SD_BUS_PROPERTY("RequiresOverridable", "as", property_get_obsolete_dependencies
, 0, SD_BUS_VTABLE_HIDDEN
),
784 SD_BUS_PROPERTY("RequisiteOverridable", "as", property_get_obsolete_dependencies
, 0, SD_BUS_VTABLE_HIDDEN
),
785 SD_BUS_PROPERTY("RequiredByOverridable", "as", property_get_obsolete_dependencies
, 0, SD_BUS_VTABLE_HIDDEN
),
786 SD_BUS_PROPERTY("RequisiteOfOverridable", "as", property_get_obsolete_dependencies
, 0, SD_BUS_VTABLE_HIDDEN
),
787 SD_BUS_PROPERTY("StartLimitInterval", "t", bus_property_get_usec
, offsetof(Unit
, start_limit
.interval
), SD_BUS_VTABLE_PROPERTY_CONST
|SD_BUS_VTABLE_HIDDEN
),
791 static int property_get_slice(
794 const char *interface
,
795 const char *property
,
796 sd_bus_message
*reply
,
798 sd_bus_error
*error
) {
806 return sd_bus_message_append(reply
, "s", unit_slice_name(u
));
809 static int property_get_current_memory(
812 const char *interface
,
813 const char *property
,
814 sd_bus_message
*reply
,
816 sd_bus_error
*error
) {
818 uint64_t sz
= (uint64_t) -1;
826 r
= unit_get_memory_current(u
, &sz
);
827 if (r
< 0 && r
!= -ENODATA
)
828 log_unit_warning_errno(u
, r
, "Failed to get memory.usage_in_bytes attribute: %m");
830 return sd_bus_message_append(reply
, "t", sz
);
833 static int property_get_current_tasks(
836 const char *interface
,
837 const char *property
,
838 sd_bus_message
*reply
,
840 sd_bus_error
*error
) {
842 uint64_t cn
= (uint64_t) -1;
850 r
= unit_get_tasks_current(u
, &cn
);
851 if (r
< 0 && r
!= -ENODATA
)
852 log_unit_warning_errno(u
, r
, "Failed to get pids.current attribute: %m");
854 return sd_bus_message_append(reply
, "t", cn
);
857 static int property_get_cpu_usage(
860 const char *interface
,
861 const char *property
,
862 sd_bus_message
*reply
,
864 sd_bus_error
*error
) {
866 nsec_t ns
= (nsec_t
) -1;
874 r
= unit_get_cpu_usage(u
, &ns
);
875 if (r
< 0 && r
!= -ENODATA
)
876 log_unit_warning_errno(u
, r
, "Failed to get cpuacct.usage attribute: %m");
878 return sd_bus_message_append(reply
, "t", ns
);
881 static int property_get_cgroup(
884 const char *interface
,
885 const char *property
,
886 sd_bus_message
*reply
,
888 sd_bus_error
*error
) {
897 /* Three cases: a) u->cgroup_path is NULL, in which case the
898 * unit has no control group, which we report as the empty
899 * string. b) u->cgroup_path is the empty string, which
900 * indicates the root cgroup, which we report as "/". c) all
901 * other cases we report as-is. */
904 t
= isempty(u
->cgroup_path
) ? "/" : u
->cgroup_path
;
908 return sd_bus_message_append(reply
, "s", t
);
911 static int append_process(sd_bus_message
*reply
, const char *p
, pid_t pid
, Set
*pids
) {
912 _cleanup_free_
char *buf
= NULL
, *cmdline
= NULL
;
918 r
= set_put(pids
, PID_TO_PTR(pid
));
919 if (r
== -EEXIST
|| r
== 0)
925 r
= cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER
, pid
, &buf
);
934 (void) get_process_cmdline(pid
, 0, true, &cmdline
);
936 return sd_bus_message_append(reply
,
943 static int append_cgroup(sd_bus_message
*reply
, const char *p
, Set
*pids
) {
944 _cleanup_closedir_
DIR *d
= NULL
;
945 _cleanup_fclose_
FILE *f
= NULL
;
951 r
= cg_enumerate_processes(SYSTEMD_CGROUP_CONTROLLER
, p
, &f
);
960 r
= cg_read_pid(f
, &pid
);
966 if (is_kernel_thread(pid
) > 0)
969 r
= append_process(reply
, p
, pid
, pids
);
974 r
= cg_enumerate_subgroups(SYSTEMD_CGROUP_CONTROLLER
, p
, &d
);
981 _cleanup_free_
char *g
= NULL
, *j
= NULL
;
983 r
= cg_read_subgroup(d
, &g
);
989 j
= strjoin(p
, "/", g
, NULL
);
993 r
= append_cgroup(reply
, j
, pids
);
1001 int bus_unit_method_get_processes(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
1002 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*reply
= NULL
;
1003 _cleanup_(set_freep
) Set
*pids
= NULL
;
1010 pids
= set_new(NULL
);
1014 r
= sd_bus_message_new_method_return(message
, &reply
);
1018 r
= sd_bus_message_open_container(reply
, 'a', "(sus)");
1022 if (u
->cgroup_path
) {
1023 r
= append_cgroup(reply
, u
->cgroup_path
, pids
);
1028 /* The main and control pids might live outside of the cgroup, hence fetch them separately */
1029 pid
= unit_main_pid(u
);
1031 r
= append_process(reply
, NULL
, pid
, pids
);
1036 pid
= unit_control_pid(u
);
1038 r
= append_process(reply
, NULL
, pid
, pids
);
1043 r
= sd_bus_message_close_container(reply
);
1047 return sd_bus_send(NULL
, reply
, NULL
);
1050 const sd_bus_vtable bus_unit_cgroup_vtable
[] = {
1051 SD_BUS_VTABLE_START(0),
1052 SD_BUS_PROPERTY("Slice", "s", property_get_slice
, 0, 0),
1053 SD_BUS_PROPERTY("ControlGroup", "s", property_get_cgroup
, 0, 0),
1054 SD_BUS_PROPERTY("MemoryCurrent", "t", property_get_current_memory
, 0, 0),
1055 SD_BUS_PROPERTY("CPUUsageNSec", "t", property_get_cpu_usage
, 0, 0),
1056 SD_BUS_PROPERTY("TasksCurrent", "t", property_get_current_tasks
, 0, 0),
1057 SD_BUS_METHOD("GetProcesses", NULL
, "a(sus)", bus_unit_method_get_processes
, SD_BUS_VTABLE_UNPRIVILEGED
),
1061 static int send_new_signal(sd_bus
*bus
, void *userdata
) {
1062 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*m
= NULL
;
1063 _cleanup_free_
char *p
= NULL
;
1070 p
= unit_dbus_path(u
);
1074 r
= sd_bus_message_new_signal(
1077 "/org/freedesktop/systemd1",
1078 "org.freedesktop.systemd1.Manager",
1083 r
= sd_bus_message_append(m
, "so", u
->id
, p
);
1087 return sd_bus_send(bus
, m
, NULL
);
1090 static int send_changed_signal(sd_bus
*bus
, void *userdata
) {
1091 _cleanup_free_
char *p
= NULL
;
1098 p
= unit_dbus_path(u
);
1102 /* Send a properties changed signal. First for the specific
1103 * type, then for the generic unit. The clients may rely on
1104 * this order to get atomic behavior if needed. */
1106 r
= sd_bus_emit_properties_changed_strv(
1108 unit_dbus_interface_from_type(u
->type
),
1113 return sd_bus_emit_properties_changed_strv(
1115 "org.freedesktop.systemd1.Unit",
1119 void bus_unit_send_change_signal(Unit
*u
) {
1123 if (u
->in_dbus_queue
) {
1124 LIST_REMOVE(dbus_queue
, u
->manager
->dbus_unit_queue
, u
);
1125 u
->in_dbus_queue
= false;
1131 r
= bus_foreach_bus(u
->manager
, NULL
, u
->sent_dbus_new_signal
? send_changed_signal
: send_new_signal
, u
);
1133 log_unit_debug_errno(u
, r
, "Failed to send unit change signal for %s: %m", u
->id
);
1135 u
->sent_dbus_new_signal
= true;
1138 static int send_removed_signal(sd_bus
*bus
, void *userdata
) {
1139 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*m
= NULL
;
1140 _cleanup_free_
char *p
= NULL
;
1147 p
= unit_dbus_path(u
);
1151 r
= sd_bus_message_new_signal(
1154 "/org/freedesktop/systemd1",
1155 "org.freedesktop.systemd1.Manager",
1160 r
= sd_bus_message_append(m
, "so", u
->id
, p
);
1164 return sd_bus_send(bus
, m
, NULL
);
1167 void bus_unit_send_removed_signal(Unit
*u
) {
1171 if (!u
->sent_dbus_new_signal
|| u
->in_dbus_queue
)
1172 bus_unit_send_change_signal(u
);
1177 r
= bus_foreach_bus(u
->manager
, NULL
, send_removed_signal
, u
);
1179 log_unit_debug_errno(u
, r
, "Failed to send unit remove signal for %s: %m", u
->id
);
1182 int bus_unit_queue_job(
1183 sd_bus_message
*message
,
1187 bool reload_if_possible
,
1188 sd_bus_error
*error
) {
1190 _cleanup_free_
char *path
= NULL
;
1196 assert(type
>= 0 && type
< _JOB_TYPE_MAX
);
1197 assert(mode
>= 0 && mode
< _JOB_MODE_MAX
);
1199 r
= mac_selinux_unit_access_check(
1201 job_type_to_access_method(type
),
1206 if (reload_if_possible
&& unit_can_reload(u
)) {
1207 if (type
== JOB_RESTART
)
1208 type
= JOB_RELOAD_OR_START
;
1209 else if (type
== JOB_TRY_RESTART
)
1210 type
= JOB_TRY_RELOAD
;
1213 if (type
== JOB_STOP
&&
1214 (u
->load_state
== UNIT_NOT_FOUND
|| u
->load_state
== UNIT_ERROR
) &&
1215 unit_active_state(u
) == UNIT_INACTIVE
)
1216 return sd_bus_error_setf(error
, BUS_ERROR_NO_SUCH_UNIT
, "Unit %s not loaded.", u
->id
);
1218 if ((type
== JOB_START
&& u
->refuse_manual_start
) ||
1219 (type
== JOB_STOP
&& u
->refuse_manual_stop
) ||
1220 ((type
== JOB_RESTART
|| type
== JOB_TRY_RESTART
) && (u
->refuse_manual_start
|| u
->refuse_manual_stop
)) ||
1221 (type
== JOB_RELOAD_OR_START
&& job_type_collapse(type
, u
) == JOB_START
&& u
->refuse_manual_start
))
1222 return sd_bus_error_setf(error
, BUS_ERROR_ONLY_BY_DEPENDENCY
, "Operation refused, unit %s may be requested by dependency only.", u
->id
);
1224 r
= manager_add_job(u
->manager
, type
, u
, mode
, error
, &j
);
1228 if (sd_bus_message_get_bus(message
) == u
->manager
->api_bus
) {
1230 r
= sd_bus_track_new(sd_bus_message_get_bus(message
), &j
->clients
, NULL
, NULL
);
1235 r
= sd_bus_track_add_sender(j
->clients
, message
);
1240 path
= job_dbus_path(j
);
1244 return sd_bus_reply_method_return(message
, "o", path
);
1247 static int bus_unit_set_transient_property(
1250 sd_bus_message
*message
,
1251 UnitSetPropertiesMode mode
,
1252 sd_bus_error
*error
) {
1260 if (streq(name
, "Description")) {
1263 r
= sd_bus_message_read(message
, "s", &d
);
1267 if (mode
!= UNIT_CHECK
) {
1268 r
= unit_set_description(u
, d
);
1272 unit_write_drop_in_format(u
, mode
, name
, "[Unit]\nDescription=%s", d
);
1277 } else if (streq(name
, "DefaultDependencies")) {
1280 r
= sd_bus_message_read(message
, "b", &b
);
1284 if (mode
!= UNIT_CHECK
) {
1285 u
->default_dependencies
= b
;
1286 unit_write_drop_in_format(u
, mode
, name
, "[Unit]\nDefaultDependencies=%s", yes_no(b
));
1291 } else if (streq(name
, "Slice")) {
1295 if (!UNIT_HAS_CGROUP_CONTEXT(u
))
1296 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "The slice property is only available for units with control groups.");
1297 if (u
->type
== UNIT_SLICE
)
1298 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Slice may not be set for slice units.");
1299 if (unit_has_name(u
, SPECIAL_INIT_SCOPE
))
1300 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Cannot set slice for init.scope");
1302 r
= sd_bus_message_read(message
, "s", &s
);
1306 if (!unit_name_is_valid(s
, UNIT_NAME_PLAIN
))
1307 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid unit name '%s'", s
);
1309 /* Note that we do not dispatch the load queue here yet, as we don't want our own transient unit to be
1310 * loaded while we are still setting it up. Or in other words, we use manager_load_unit_prepare()
1311 * instead of manager_load_unit() on purpose, here. */
1312 r
= manager_load_unit_prepare(u
->manager
, s
, NULL
, error
, &slice
);
1316 if (slice
->type
!= UNIT_SLICE
)
1317 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Unit name '%s' is not a slice", s
);
1319 if (mode
!= UNIT_CHECK
) {
1320 r
= unit_set_slice(u
, slice
);
1324 unit_write_drop_in_private_format(u
, mode
, name
, "Slice=%s", s
);
1329 } else if (STR_IN_SET(name
,
1330 "Requires", "RequiresOverridable",
1331 "Requisite", "RequisiteOverridable",
1337 "PropagatesReloadTo", "ReloadPropagatedFrom",
1343 if (streq(name
, "RequiresOverridable"))
1344 d
= UNIT_REQUIRES
; /* redirect for obsolete unit dependency type */
1345 else if (streq(name
, "RequisiteOverridable"))
1346 d
= UNIT_REQUISITE
; /* same here */
1348 d
= unit_dependency_from_string(name
);
1350 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid unit dependency: %s", name
);
1353 r
= sd_bus_message_enter_container(message
, 'a', "s");
1357 while ((r
= sd_bus_message_read(message
, "s", &other
)) > 0) {
1358 if (!unit_name_is_valid(other
, UNIT_NAME_PLAIN
|UNIT_NAME_INSTANCE
))
1359 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid unit name %s", other
);
1361 if (mode
!= UNIT_CHECK
) {
1362 _cleanup_free_
char *label
= NULL
;
1364 r
= unit_add_dependency_by_name(u
, d
, other
, NULL
, true);
1368 label
= strjoin(name
, "-", other
, NULL
);
1372 unit_write_drop_in_format(u
, mode
, label
, "[Unit]\n%s=%s", name
, other
);
1379 r
= sd_bus_message_exit_container(message
);
1385 } else if (streq(name
, "AddRef")) {
1389 /* Why is this called "AddRef" rather than just "Ref", or "Reference"? There's already a "Ref()" method
1390 * on the Unit interface, and it's probably not a good idea to expose a property and a method on the
1391 * same interface (well, strictly speaking AddRef isn't exposed as full property, we just read it for
1392 * transient units, but still). And "References" and "ReferencedBy" is already used as unit reference
1393 * dependency type, hence let's not confuse things with that.
1395 * Note that we don't acually add the reference to the bus track. We do that only after the setup of
1396 * the transient unit is complete, so that setting this property multiple times in the same transient
1397 * unit creation call doesn't count as individual references. */
1399 r
= sd_bus_message_read(message
, "b", &b
);
1403 if (mode
!= UNIT_CHECK
)
1404 u
->bus_track_add
= b
;
1412 int bus_unit_set_properties(
1414 sd_bus_message
*message
,
1415 UnitSetPropertiesMode mode
,
1417 sd_bus_error
*error
) {
1419 bool for_real
= false;
1426 /* We iterate through the array twice. First run we just check
1427 * if all passed data is valid, second run actually applies
1428 * it. This is to implement transaction-like behaviour without
1429 * actually providing full transactions. */
1431 r
= sd_bus_message_enter_container(message
, 'a', "(sv)");
1438 r
= sd_bus_message_enter_container(message
, 'r', "sv");
1442 if (for_real
|| mode
== UNIT_CHECK
)
1445 /* Reached EOF. Let's try again, and this time for realz... */
1446 r
= sd_bus_message_rewind(message
, false);
1454 r
= sd_bus_message_read(message
, "s", &name
);
1458 if (!UNIT_VTABLE(u
)->bus_set_property
)
1459 return sd_bus_error_setf(error
, SD_BUS_ERROR_PROPERTY_READ_ONLY
, "Objects of this type do not support setting properties.");
1461 r
= sd_bus_message_enter_container(message
, 'v', NULL
);
1465 r
= UNIT_VTABLE(u
)->bus_set_property(u
, name
, message
, for_real
? mode
: UNIT_CHECK
, error
);
1466 if (r
== 0 && u
->transient
&& u
->load_state
== UNIT_STUB
)
1467 r
= bus_unit_set_transient_property(u
, name
, message
, for_real
? mode
: UNIT_CHECK
, error
);
1471 return sd_bus_error_setf(error
, SD_BUS_ERROR_PROPERTY_READ_ONLY
, "Cannot set property %s, or unknown property.", name
);
1473 r
= sd_bus_message_exit_container(message
);
1477 r
= sd_bus_message_exit_container(message
);
1484 r
= sd_bus_message_exit_container(message
);
1488 if (commit
&& n
> 0 && UNIT_VTABLE(u
)->bus_commit_properties
)
1489 UNIT_VTABLE(u
)->bus_commit_properties(u
);
1494 int bus_unit_check_load_state(Unit
*u
, sd_bus_error
*error
) {
1497 if (u
->load_state
== UNIT_LOADED
)
1500 /* Give a better description of the unit error when
1501 * possible. Note that in the case of UNIT_MASKED, load_error
1503 if (u
->load_state
== UNIT_MASKED
)
1504 return sd_bus_error_setf(error
, BUS_ERROR_UNIT_MASKED
, "Unit %s is masked.", u
->id
);
1506 if (u
->load_state
== UNIT_NOT_FOUND
)
1507 return sd_bus_error_setf(error
, BUS_ERROR_NO_SUCH_UNIT
, "Unit %s not found.", u
->id
);
1509 return sd_bus_error_set_errnof(error
, u
->load_error
, "Unit %s is not loaded properly: %m.", u
->id
);
1512 static int bus_track_handler(sd_bus_track
*t
, void *userdata
) {
1518 u
->bus_track
= sd_bus_track_unref(u
->bus_track
); /* make sure we aren't called again */
1520 unit_add_to_gc_queue(u
);
1524 static int allocate_bus_track(Unit
*u
) {
1532 r
= sd_bus_track_new(u
->manager
->api_bus
, &u
->bus_track
, bus_track_handler
, u
);
1536 r
= sd_bus_track_set_recursive(u
->bus_track
, true);
1538 u
->bus_track
= sd_bus_track_unref(u
->bus_track
);
1545 int bus_unit_track_add_name(Unit
*u
, const char *name
) {
1550 r
= allocate_bus_track(u
);
1554 return sd_bus_track_add_name(u
->bus_track
, name
);
1557 int bus_unit_track_add_sender(Unit
*u
, sd_bus_message
*m
) {
1562 r
= allocate_bus_track(u
);
1566 return sd_bus_track_add_sender(u
->bus_track
, m
);
1569 int bus_unit_track_remove_sender(Unit
*u
, sd_bus_message
*m
) {
1572 /* If we haven't allocated the bus track object yet, then there's definitely no reference taken yet, return an
1577 return sd_bus_track_remove_sender(u
->bus_track
, m
);