1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
5 #include "alloc-util.h"
6 #include "bpf-firewall.h"
7 #include "bus-common-errors.h"
8 #include "bus-get-properties.h"
9 #include "bus-polkit.h"
10 #include "cgroup-util.h"
11 #include "condition.h"
13 #include "dbus-unit.h"
14 #include "dbus-util.h"
18 #include "locale-util.h"
20 #include "path-util.h"
21 #include "process-util.h"
22 #include "selinux-access.h"
23 #include "signal-util.h"
25 #include "string-table.h"
26 #include "string-util.h"
28 #include "user-util.h"
31 static bool unit_can_start_refuse_manual(Unit
*u
) {
32 return unit_can_start(u
) && !u
->refuse_manual_start
;
35 static bool unit_can_stop_refuse_manual(Unit
*u
) {
36 return unit_can_stop(u
) && !u
->refuse_manual_stop
;
39 static bool unit_can_isolate_refuse_manual(Unit
*u
) {
40 return unit_can_isolate(u
) && !u
->refuse_manual_start
;
43 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_collect_mode
, collect_mode
, CollectMode
);
44 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_load_state
, unit_load_state
, UnitLoadState
);
45 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_job_mode
, job_mode
, JobMode
);
46 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_emergency_action
, emergency_action
, EmergencyAction
);
47 static BUS_DEFINE_PROPERTY_GET(property_get_description
, "s", Unit
, unit_description
);
48 static BUS_DEFINE_PROPERTY_GET2(property_get_active_state
, "s", Unit
, unit_active_state
, unit_active_state_to_string
);
49 static BUS_DEFINE_PROPERTY_GET2(property_get_freezer_state
, "s", Unit
, unit_freezer_state
, freezer_state_to_string
);
50 static BUS_DEFINE_PROPERTY_GET(property_get_sub_state
, "s", Unit
, unit_sub_state_to_string
);
51 static BUS_DEFINE_PROPERTY_GET2(property_get_unit_file_state
, "s", Unit
, unit_get_unit_file_state
, unit_file_state_to_string
);
52 static BUS_DEFINE_PROPERTY_GET(property_get_can_reload
, "b", Unit
, unit_can_reload
);
53 static BUS_DEFINE_PROPERTY_GET(property_get_can_start
, "b", Unit
, unit_can_start_refuse_manual
);
54 static BUS_DEFINE_PROPERTY_GET(property_get_can_stop
, "b", Unit
, unit_can_stop_refuse_manual
);
55 static BUS_DEFINE_PROPERTY_GET(property_get_can_isolate
, "b", Unit
, unit_can_isolate_refuse_manual
);
56 static BUS_DEFINE_PROPERTY_GET(property_get_can_freeze
, "b", Unit
, unit_can_freeze
);
57 static BUS_DEFINE_PROPERTY_GET(property_get_need_daemon_reload
, "b", Unit
, unit_need_daemon_reload
);
58 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_empty_strv
, "as", 0);
60 static int property_get_can_clean(
63 const char *interface
,
65 sd_bus_message
*reply
,
67 sd_bus_error
*error
) {
76 r
= unit_can_clean(u
, &mask
);
80 r
= sd_bus_message_open_container(reply
, 'a', "s");
84 for (ExecDirectoryType t
= 0; t
< _EXEC_DIRECTORY_TYPE_MAX
; t
++) {
85 if (!FLAGS_SET(mask
, 1U << t
))
88 r
= sd_bus_message_append(reply
, "s", exec_resource_type_to_string(t
));
93 return sd_bus_message_close_container(reply
);
96 static int property_get_names(
99 const char *interface
,
100 const char *property
,
101 sd_bus_message
*reply
,
103 sd_bus_error
*error
) {
113 r
= sd_bus_message_open_container(reply
, 'a', "s");
117 r
= sd_bus_message_append(reply
, "s", u
->id
);
121 SET_FOREACH(t
, u
->aliases
) {
122 r
= sd_bus_message_append(reply
, "s", t
);
127 return sd_bus_message_close_container(reply
);
130 static int property_get_following(
133 const char *interface
,
134 const char *property
,
135 sd_bus_message
*reply
,
137 sd_bus_error
*error
) {
139 Unit
*u
= userdata
, *f
;
145 f
= unit_following(u
);
146 return sd_bus_message_append(reply
, "s", f
? f
->id
: NULL
);
149 static int property_get_dependencies(
152 const char *interface
,
153 const char *property
,
154 sd_bus_message
*reply
,
156 sd_bus_error
*error
) {
158 Hashmap
**h
= userdata
;
167 r
= sd_bus_message_open_container(reply
, 'a', "s");
171 HASHMAP_FOREACH_KEY(v
, u
, *h
) {
172 r
= sd_bus_message_append(reply
, "s", u
->id
);
177 return sd_bus_message_close_container(reply
);
180 static int property_get_requires_mounts_for(
183 const char *interface
,
184 const char *property
,
185 sd_bus_message
*reply
,
187 sd_bus_error
*error
) {
189 Hashmap
**h
= userdata
;
198 r
= sd_bus_message_open_container(reply
, 'a', "s");
202 HASHMAP_FOREACH_KEY(v
, p
, *h
) {
203 r
= sd_bus_message_append(reply
, "s", p
);
208 return sd_bus_message_close_container(reply
);
211 static int property_get_unit_file_preset(
214 const char *interface
,
215 const char *property
,
216 sd_bus_message
*reply
,
218 sd_bus_error
*error
) {
227 r
= unit_get_unit_file_preset(u
);
229 return sd_bus_message_append(reply
, "s",
231 r
> 0 ? "enabled" : "disabled");
234 static int property_get_job(
237 const char *interface
,
238 const char *property
,
239 sd_bus_message
*reply
,
241 sd_bus_error
*error
) {
243 _cleanup_free_
char *p
= NULL
;
251 return sd_bus_message_append(reply
, "(uo)", 0, "/");
253 p
= job_dbus_path(*j
);
257 return sd_bus_message_append(reply
, "(uo)", (*j
)->id
, p
);
260 static int property_get_conditions(
263 const char *interface
,
264 const char *property
,
265 sd_bus_message
*reply
,
267 sd_bus_error
*error
) {
269 const char *(*to_string
)(ConditionType type
) = NULL
;
270 Condition
**list
= userdata
, *c
;
277 to_string
= streq(property
, "Asserts") ? assert_type_to_string
: condition_type_to_string
;
279 r
= sd_bus_message_open_container(reply
, 'a', "(sbbsi)");
283 LIST_FOREACH(conditions
, c
, *list
) {
287 c
->result
== CONDITION_UNTESTED
? 0 :
288 c
->result
== CONDITION_SUCCEEDED
? 1 : -1;
290 r
= sd_bus_message_append(reply
, "(sbbsi)",
292 c
->trigger
, c
->negate
,
293 c
->parameter
, tristate
);
299 return sd_bus_message_close_container(reply
);
302 static int property_get_load_error(
305 const char *interface
,
306 const char *property
,
307 sd_bus_message
*reply
,
309 sd_bus_error
*error
) {
311 _cleanup_(sd_bus_error_free
) sd_bus_error e
= SD_BUS_ERROR_NULL
;
319 r
= bus_unit_validate_load_state(u
, &e
);
321 return sd_bus_message_append(reply
, "(ss)", e
.name
, e
.message
);
323 return sd_bus_message_append(reply
, "(ss)", NULL
, NULL
);
326 static int property_get_markers(
329 const char *interface
,
330 const char *property
,
331 sd_bus_message
*reply
,
333 sd_bus_error
*error
) {
335 unsigned *markers
= userdata
;
342 r
= sd_bus_message_open_container(reply
, 'a', "s");
346 /* Make sure out values fit in the bitfield. */
347 assert_cc(_UNIT_MARKER_MAX
<= sizeof(((Unit
){}).markers
) * 8);
349 for (UnitMarker m
= 0; m
< _UNIT_MARKER_MAX
; m
++)
350 if (FLAGS_SET(*markers
, 1u << m
)) {
351 r
= sd_bus_message_append(reply
, "s", unit_marker_to_string(m
));
356 return sd_bus_message_close_container(reply
);
359 static const char *const polkit_message_for_job
[_JOB_TYPE_MAX
] = {
360 [JOB_START
] = N_("Authentication is required to start '$(unit)'."),
361 [JOB_STOP
] = N_("Authentication is required to stop '$(unit)'."),
362 [JOB_RELOAD
] = N_("Authentication is required to reload '$(unit)'."),
363 [JOB_RESTART
] = N_("Authentication is required to restart '$(unit)'."),
364 [JOB_TRY_RESTART
] = N_("Authentication is required to restart '$(unit)'."),
367 int bus_unit_method_start_generic(
368 sd_bus_message
*message
,
371 bool reload_if_possible
,
372 sd_bus_error
*error
) {
374 const char *smode
, *verb
;
380 assert(job_type
>= 0 && job_type
< _JOB_TYPE_MAX
);
382 r
= mac_selinux_unit_access_check(
384 job_type_to_access_method(job_type
),
389 r
= sd_bus_message_read(message
, "s", &smode
);
393 mode
= job_mode_from_string(smode
);
395 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Job mode %s invalid", smode
);
397 if (reload_if_possible
)
398 verb
= strjoina("reload-or-", job_type_to_string(job_type
));
400 verb
= job_type_to_string(job_type
);
402 r
= bus_verify_manage_units_async_full(
406 polkit_message_for_job
[job_type
],
413 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
415 return bus_unit_queue_job(message
, u
, job_type
, mode
,
416 reload_if_possible
? BUS_UNIT_QUEUE_RELOAD_IF_POSSIBLE
: 0, error
);
419 static int method_start(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
420 return bus_unit_method_start_generic(message
, userdata
, JOB_START
, false, error
);
423 static int method_stop(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
424 return bus_unit_method_start_generic(message
, userdata
, JOB_STOP
, false, error
);
427 static int method_reload(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
428 return bus_unit_method_start_generic(message
, userdata
, JOB_RELOAD
, false, error
);
431 static int method_restart(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
432 return bus_unit_method_start_generic(message
, userdata
, JOB_RESTART
, false, error
);
435 static int method_try_restart(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
436 return bus_unit_method_start_generic(message
, userdata
, JOB_TRY_RESTART
, false, error
);
439 static int method_reload_or_restart(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
440 return bus_unit_method_start_generic(message
, userdata
, JOB_RESTART
, true, error
);
443 static int method_reload_or_try_restart(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
444 return bus_unit_method_start_generic(message
, userdata
, JOB_TRY_RESTART
, true, error
);
447 int bus_unit_method_enqueue_job(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
448 BusUnitQueueFlags flags
= BUS_UNIT_QUEUE_VERBOSE_REPLY
;
449 const char *jtype
, *smode
;
458 r
= sd_bus_message_read(message
, "ss", &jtype
, &smode
);
462 /* Parse the two magic reload types "reload-or-…" manually */
463 if (streq(jtype
, "reload-or-restart")) {
465 flags
|= BUS_UNIT_QUEUE_RELOAD_IF_POSSIBLE
;
466 } else if (streq(jtype
, "reload-or-try-restart")) {
467 type
= JOB_TRY_RESTART
;
468 flags
|= BUS_UNIT_QUEUE_RELOAD_IF_POSSIBLE
;
470 /* And the rest generically */
471 type
= job_type_from_string(jtype
);
473 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Job type %s invalid", jtype
);
476 mode
= job_mode_from_string(smode
);
478 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Job mode %s invalid", smode
);
480 r
= mac_selinux_unit_access_check(
482 job_type_to_access_method(type
),
487 r
= bus_verify_manage_units_async_full(
491 polkit_message_for_job
[type
],
498 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
500 return bus_unit_queue_job(message
, u
, type
, mode
, flags
, error
);
503 int bus_unit_method_kill(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
513 r
= mac_selinux_unit_access_check(u
, message
, "stop", error
);
517 r
= sd_bus_message_read(message
, "si", &swho
, &signo
);
524 who
= kill_who_from_string(swho
);
526 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid who argument %s", swho
);
529 if (!SIGNAL_VALID(signo
))
530 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Signal number out of range.");
532 r
= bus_verify_manage_units_async_full(
536 N_("Authentication is required to send a UNIX signal to the processes of '$(unit)'."),
543 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
545 r
= unit_kill(u
, who
, signo
, error
);
549 return sd_bus_reply_method_return(message
, NULL
);
552 int bus_unit_method_reset_failed(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
559 r
= mac_selinux_unit_access_check(u
, message
, "reload", error
);
563 r
= bus_verify_manage_units_async_full(
567 N_("Authentication is required to reset the \"failed\" state of '$(unit)'."),
574 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
576 unit_reset_failed(u
);
578 return sd_bus_reply_method_return(message
, NULL
);
581 int bus_unit_method_set_properties(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
588 r
= mac_selinux_unit_access_check(u
, message
, "start", error
);
592 r
= sd_bus_message_read(message
, "b", &runtime
);
596 r
= bus_verify_manage_units_async_full(
600 N_("Authentication is required to set properties on '$(unit)'."),
607 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
609 r
= bus_unit_set_properties(u
, message
, runtime
? UNIT_RUNTIME
: UNIT_PERSISTENT
, true, error
);
613 return sd_bus_reply_method_return(message
, NULL
);
616 int bus_unit_method_ref(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
623 r
= mac_selinux_unit_access_check(u
, message
, "start", error
);
627 r
= bus_verify_manage_units_async_full(
638 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
640 r
= bus_unit_track_add_sender(u
, message
);
644 return sd_bus_reply_method_return(message
, NULL
);
647 int bus_unit_method_unref(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
654 r
= bus_unit_track_remove_sender(u
, message
);
656 return sd_bus_error_setf(error
, BUS_ERROR_NOT_REFERENCED
, "Unit has not been referenced yet.");
660 return sd_bus_reply_method_return(message
, NULL
);
663 int bus_unit_method_clean(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
664 ExecCleanMask mask
= 0;
671 r
= mac_selinux_unit_access_check(u
, message
, "stop", error
);
675 r
= sd_bus_message_enter_container(message
, 'a', "s");
682 r
= sd_bus_message_read(message
, "s", &i
);
689 mask
|= EXEC_CLEAN_ALL
;
693 t
= exec_resource_type_from_string(i
);
695 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid resource type: %s", i
);
701 r
= sd_bus_message_exit_container(message
);
705 r
= bus_verify_manage_units_async_full(
709 N_("Authentication is required to delete files and directories associated with '$(unit)'."),
716 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
718 r
= unit_clean(u
, mask
);
719 if (r
== -EOPNOTSUPP
)
720 return sd_bus_error_setf(error
, SD_BUS_ERROR_NOT_SUPPORTED
, "Unit '%s' does not supporting cleaning.", u
->id
);
722 return sd_bus_error_setf(error
, BUS_ERROR_NOTHING_TO_CLEAN
, "No matching resources found.");
724 return sd_bus_error_setf(error
, BUS_ERROR_UNIT_BUSY
, "Unit is not inactive or has pending job.");
728 return sd_bus_reply_method_return(message
, NULL
);
731 static int bus_unit_method_freezer_generic(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
, FreezerAction action
) {
733 int (*method
)(Unit
*);
735 bool reply_no_delay
= false;
740 assert(IN_SET(action
, FREEZER_FREEZE
, FREEZER_THAW
));
742 if (action
== FREEZER_FREEZE
) {
744 method
= unit_freeze
;
750 r
= mac_selinux_unit_access_check(u
, message
, perm
, error
);
754 r
= bus_verify_manage_units_async_full(
758 N_("Authentication is required to freeze or thaw the processes of '$(unit)' unit."),
765 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
768 if (r
== -EOPNOTSUPP
)
769 return sd_bus_error_setf(error
, SD_BUS_ERROR_NOT_SUPPORTED
, "Unit '%s' does not support freezing.", u
->id
);
771 return sd_bus_error_setf(error
, BUS_ERROR_UNIT_BUSY
, "Unit has a pending job.");
773 return sd_bus_error_setf(error
, BUS_ERROR_UNIT_INACTIVE
, "Unit is inactive.");
775 return sd_bus_error_setf(error
, SD_BUS_ERROR_FAILED
, "Previously requested freezer operation for unit '%s' is still in progress.", u
->id
);
779 reply_no_delay
= true;
781 assert(!u
->pending_freezer_message
);
783 r
= sd_bus_message_new_method_return(message
, &u
->pending_freezer_message
);
787 if (reply_no_delay
) {
788 r
= bus_unit_send_pending_freezer_message(u
);
796 int bus_unit_method_thaw(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
797 return bus_unit_method_freezer_generic(message
, userdata
, error
, FREEZER_THAW
);
800 int bus_unit_method_freeze(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
801 return bus_unit_method_freezer_generic(message
, userdata
, error
, FREEZER_FREEZE
);
804 static int property_get_refs(
807 const char *interface
,
808 const char *property
,
809 sd_bus_message
*reply
,
811 sd_bus_error
*error
) {
819 r
= sd_bus_message_open_container(reply
, 'a', "s");
823 for (const char *i
= sd_bus_track_first(u
->bus_track
); i
; i
= sd_bus_track_next(u
->bus_track
)) {
826 c
= sd_bus_track_count_name(u
->bus_track
, i
);
830 /* Add the item multiple times if the ref count for each is above 1 */
831 for (int k
= 0; k
< c
; k
++) {
832 r
= sd_bus_message_append(reply
, "s", i
);
838 return sd_bus_message_close_container(reply
);
841 const sd_bus_vtable bus_unit_vtable
[] = {
842 SD_BUS_VTABLE_START(0),
844 SD_BUS_PROPERTY("Id", "s", NULL
, offsetof(Unit
, id
), SD_BUS_VTABLE_PROPERTY_CONST
),
845 SD_BUS_PROPERTY("Names", "as", property_get_names
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
846 SD_BUS_PROPERTY("Following", "s", property_get_following
, 0, 0),
847 SD_BUS_PROPERTY("Requires", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_REQUIRES
]), SD_BUS_VTABLE_PROPERTY_CONST
),
848 SD_BUS_PROPERTY("Requisite", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_REQUISITE
]), SD_BUS_VTABLE_PROPERTY_CONST
),
849 SD_BUS_PROPERTY("Wants", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_WANTS
]), SD_BUS_VTABLE_PROPERTY_CONST
),
850 SD_BUS_PROPERTY("BindsTo", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_BINDS_TO
]), SD_BUS_VTABLE_PROPERTY_CONST
),
851 SD_BUS_PROPERTY("PartOf", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_PART_OF
]), SD_BUS_VTABLE_PROPERTY_CONST
),
852 SD_BUS_PROPERTY("RequiredBy", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_REQUIRED_BY
]), SD_BUS_VTABLE_PROPERTY_CONST
),
853 SD_BUS_PROPERTY("RequisiteOf", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_REQUISITE_OF
]), SD_BUS_VTABLE_PROPERTY_CONST
),
854 SD_BUS_PROPERTY("WantedBy", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_WANTED_BY
]), SD_BUS_VTABLE_PROPERTY_CONST
),
855 SD_BUS_PROPERTY("BoundBy", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_BOUND_BY
]), SD_BUS_VTABLE_PROPERTY_CONST
),
856 SD_BUS_PROPERTY("ConsistsOf", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_CONSISTS_OF
]), SD_BUS_VTABLE_PROPERTY_CONST
),
857 SD_BUS_PROPERTY("Conflicts", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_CONFLICTS
]), SD_BUS_VTABLE_PROPERTY_CONST
),
858 SD_BUS_PROPERTY("ConflictedBy", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_CONFLICTED_BY
]), SD_BUS_VTABLE_PROPERTY_CONST
),
859 SD_BUS_PROPERTY("Before", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_BEFORE
]), SD_BUS_VTABLE_PROPERTY_CONST
),
860 SD_BUS_PROPERTY("After", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_AFTER
]), SD_BUS_VTABLE_PROPERTY_CONST
),
861 SD_BUS_PROPERTY("OnFailure", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_ON_FAILURE
]), SD_BUS_VTABLE_PROPERTY_CONST
),
862 SD_BUS_PROPERTY("Triggers", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_TRIGGERS
]), SD_BUS_VTABLE_PROPERTY_CONST
),
863 SD_BUS_PROPERTY("TriggeredBy", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_TRIGGERED_BY
]), SD_BUS_VTABLE_PROPERTY_CONST
),
864 SD_BUS_PROPERTY("PropagatesReloadTo", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_PROPAGATES_RELOAD_TO
]), SD_BUS_VTABLE_PROPERTY_CONST
),
865 SD_BUS_PROPERTY("ReloadPropagatedFrom", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_RELOAD_PROPAGATED_FROM
]), SD_BUS_VTABLE_PROPERTY_CONST
),
866 SD_BUS_PROPERTY("JoinsNamespaceOf", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_JOINS_NAMESPACE_OF
]), SD_BUS_VTABLE_PROPERTY_CONST
),
867 SD_BUS_PROPERTY("RequiresMountsFor", "as", property_get_requires_mounts_for
, offsetof(Unit
, requires_mounts_for
), SD_BUS_VTABLE_PROPERTY_CONST
),
868 SD_BUS_PROPERTY("Documentation", "as", NULL
, offsetof(Unit
, documentation
), SD_BUS_VTABLE_PROPERTY_CONST
),
869 SD_BUS_PROPERTY("Description", "s", property_get_description
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
870 SD_BUS_PROPERTY("LoadState", "s", property_get_load_state
, offsetof(Unit
, load_state
), SD_BUS_VTABLE_PROPERTY_CONST
),
871 SD_BUS_PROPERTY("ActiveState", "s", property_get_active_state
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
872 SD_BUS_PROPERTY("FreezerState", "s", property_get_freezer_state
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
873 SD_BUS_PROPERTY("SubState", "s", property_get_sub_state
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
874 SD_BUS_PROPERTY("FragmentPath", "s", NULL
, offsetof(Unit
, fragment_path
), SD_BUS_VTABLE_PROPERTY_CONST
),
875 SD_BUS_PROPERTY("SourcePath", "s", NULL
, offsetof(Unit
, source_path
), SD_BUS_VTABLE_PROPERTY_CONST
),
876 SD_BUS_PROPERTY("DropInPaths", "as", NULL
, offsetof(Unit
, dropin_paths
), SD_BUS_VTABLE_PROPERTY_CONST
),
877 SD_BUS_PROPERTY("UnitFileState", "s", property_get_unit_file_state
, 0, 0),
878 SD_BUS_PROPERTY("UnitFilePreset", "s", property_get_unit_file_preset
, 0, 0),
879 BUS_PROPERTY_DUAL_TIMESTAMP("StateChangeTimestamp", offsetof(Unit
, state_change_timestamp
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
880 BUS_PROPERTY_DUAL_TIMESTAMP("InactiveExitTimestamp", offsetof(Unit
, inactive_exit_timestamp
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
881 BUS_PROPERTY_DUAL_TIMESTAMP("ActiveEnterTimestamp", offsetof(Unit
, active_enter_timestamp
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
882 BUS_PROPERTY_DUAL_TIMESTAMP("ActiveExitTimestamp", offsetof(Unit
, active_exit_timestamp
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
883 BUS_PROPERTY_DUAL_TIMESTAMP("InactiveEnterTimestamp", offsetof(Unit
, inactive_enter_timestamp
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
884 SD_BUS_PROPERTY("CanStart", "b", property_get_can_start
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
885 SD_BUS_PROPERTY("CanStop", "b", property_get_can_stop
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
886 SD_BUS_PROPERTY("CanReload", "b", property_get_can_reload
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
887 SD_BUS_PROPERTY("CanIsolate", "b", property_get_can_isolate
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
888 SD_BUS_PROPERTY("CanClean", "as", property_get_can_clean
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
889 SD_BUS_PROPERTY("CanFreeze", "b", property_get_can_freeze
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
890 SD_BUS_PROPERTY("Job", "(uo)", property_get_job
, offsetof(Unit
, job
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
891 SD_BUS_PROPERTY("StopWhenUnneeded", "b", bus_property_get_bool
, offsetof(Unit
, stop_when_unneeded
), SD_BUS_VTABLE_PROPERTY_CONST
),
892 SD_BUS_PROPERTY("RefuseManualStart", "b", bus_property_get_bool
, offsetof(Unit
, refuse_manual_start
), SD_BUS_VTABLE_PROPERTY_CONST
),
893 SD_BUS_PROPERTY("RefuseManualStop", "b", bus_property_get_bool
, offsetof(Unit
, refuse_manual_stop
), SD_BUS_VTABLE_PROPERTY_CONST
),
894 SD_BUS_PROPERTY("AllowIsolate", "b", bus_property_get_bool
, offsetof(Unit
, allow_isolate
), SD_BUS_VTABLE_PROPERTY_CONST
),
895 SD_BUS_PROPERTY("DefaultDependencies", "b", bus_property_get_bool
, offsetof(Unit
, default_dependencies
), SD_BUS_VTABLE_PROPERTY_CONST
),
896 SD_BUS_PROPERTY("OnFailureJobMode", "s", property_get_job_mode
, offsetof(Unit
, on_failure_job_mode
), SD_BUS_VTABLE_PROPERTY_CONST
),
897 SD_BUS_PROPERTY("IgnoreOnIsolate", "b", bus_property_get_bool
, offsetof(Unit
, ignore_on_isolate
), SD_BUS_VTABLE_PROPERTY_CONST
),
898 SD_BUS_PROPERTY("NeedDaemonReload", "b", property_get_need_daemon_reload
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
899 SD_BUS_PROPERTY("Markers", "as", property_get_markers
, offsetof(Unit
, markers
), 0),
900 SD_BUS_PROPERTY("JobTimeoutUSec", "t", bus_property_get_usec
, offsetof(Unit
, job_timeout
), SD_BUS_VTABLE_PROPERTY_CONST
),
901 SD_BUS_PROPERTY("JobRunningTimeoutUSec", "t", bus_property_get_usec
, offsetof(Unit
, job_running_timeout
), SD_BUS_VTABLE_PROPERTY_CONST
),
902 SD_BUS_PROPERTY("JobTimeoutAction", "s", property_get_emergency_action
, offsetof(Unit
, job_timeout_action
), SD_BUS_VTABLE_PROPERTY_CONST
),
903 SD_BUS_PROPERTY("JobTimeoutRebootArgument", "s", NULL
, offsetof(Unit
, job_timeout_reboot_arg
), SD_BUS_VTABLE_PROPERTY_CONST
),
904 SD_BUS_PROPERTY("ConditionResult", "b", bus_property_get_bool
, offsetof(Unit
, condition_result
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
905 SD_BUS_PROPERTY("AssertResult", "b", bus_property_get_bool
, offsetof(Unit
, assert_result
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
906 BUS_PROPERTY_DUAL_TIMESTAMP("ConditionTimestamp", offsetof(Unit
, condition_timestamp
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
907 BUS_PROPERTY_DUAL_TIMESTAMP("AssertTimestamp", offsetof(Unit
, assert_timestamp
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
908 SD_BUS_PROPERTY("Conditions", "a(sbbsi)", property_get_conditions
, offsetof(Unit
, conditions
), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION
),
909 SD_BUS_PROPERTY("Asserts", "a(sbbsi)", property_get_conditions
, offsetof(Unit
, asserts
), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION
),
910 SD_BUS_PROPERTY("LoadError", "(ss)", property_get_load_error
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
911 SD_BUS_PROPERTY("Transient", "b", bus_property_get_bool
, offsetof(Unit
, transient
), SD_BUS_VTABLE_PROPERTY_CONST
),
912 SD_BUS_PROPERTY("Perpetual", "b", bus_property_get_bool
, offsetof(Unit
, perpetual
), SD_BUS_VTABLE_PROPERTY_CONST
),
913 SD_BUS_PROPERTY("StartLimitIntervalUSec", "t", bus_property_get_usec
, offsetof(Unit
, start_ratelimit
.interval
), SD_BUS_VTABLE_PROPERTY_CONST
),
914 SD_BUS_PROPERTY("StartLimitBurst", "u", bus_property_get_unsigned
, offsetof(Unit
, start_ratelimit
.burst
), SD_BUS_VTABLE_PROPERTY_CONST
),
915 SD_BUS_PROPERTY("StartLimitAction", "s", property_get_emergency_action
, offsetof(Unit
, start_limit_action
), SD_BUS_VTABLE_PROPERTY_CONST
),
916 SD_BUS_PROPERTY("FailureAction", "s", property_get_emergency_action
, offsetof(Unit
, failure_action
), SD_BUS_VTABLE_PROPERTY_CONST
),
917 SD_BUS_PROPERTY("FailureActionExitStatus", "i", bus_property_get_int
, offsetof(Unit
, failure_action_exit_status
), SD_BUS_VTABLE_PROPERTY_CONST
),
918 SD_BUS_PROPERTY("SuccessAction", "s", property_get_emergency_action
, offsetof(Unit
, success_action
), SD_BUS_VTABLE_PROPERTY_CONST
),
919 SD_BUS_PROPERTY("SuccessActionExitStatus", "i", bus_property_get_int
, offsetof(Unit
, success_action_exit_status
), SD_BUS_VTABLE_PROPERTY_CONST
),
920 SD_BUS_PROPERTY("RebootArgument", "s", NULL
, offsetof(Unit
, reboot_arg
), SD_BUS_VTABLE_PROPERTY_CONST
),
921 SD_BUS_PROPERTY("InvocationID", "ay", bus_property_get_id128
, offsetof(Unit
, invocation_id
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
922 SD_BUS_PROPERTY("CollectMode", "s", property_get_collect_mode
, offsetof(Unit
, collect_mode
), SD_BUS_VTABLE_PROPERTY_CONST
),
923 SD_BUS_PROPERTY("Refs", "as", property_get_refs
, 0, 0),
925 SD_BUS_METHOD_WITH_NAMES("Start",
931 SD_BUS_VTABLE_UNPRIVILEGED
),
932 SD_BUS_METHOD_WITH_NAMES("Stop",
938 SD_BUS_VTABLE_UNPRIVILEGED
),
939 SD_BUS_METHOD_WITH_NAMES("Reload",
945 SD_BUS_VTABLE_UNPRIVILEGED
),
946 SD_BUS_METHOD_WITH_NAMES("Restart",
952 SD_BUS_VTABLE_UNPRIVILEGED
),
953 SD_BUS_METHOD_WITH_NAMES("TryRestart",
959 SD_BUS_VTABLE_UNPRIVILEGED
),
960 SD_BUS_METHOD_WITH_NAMES("ReloadOrRestart",
965 method_reload_or_restart
,
966 SD_BUS_VTABLE_UNPRIVILEGED
),
967 SD_BUS_METHOD_WITH_NAMES("ReloadOrTryRestart",
972 method_reload_or_try_restart
,
973 SD_BUS_VTABLE_UNPRIVILEGED
),
974 SD_BUS_METHOD_WITH_NAMES("EnqueueJob",
976 SD_BUS_PARAM(job_type
)
977 SD_BUS_PARAM(job_mode
),
980 SD_BUS_PARAM(job_path
)
981 SD_BUS_PARAM(unit_id
)
982 SD_BUS_PARAM(unit_path
)
983 SD_BUS_PARAM(job_type
)
984 SD_BUS_PARAM(affected_jobs
),
985 bus_unit_method_enqueue_job
,
986 SD_BUS_VTABLE_UNPRIVILEGED
),
987 SD_BUS_METHOD_WITH_NAMES("Kill",
990 SD_BUS_PARAM(signal
),
992 bus_unit_method_kill
,
993 SD_BUS_VTABLE_UNPRIVILEGED
),
994 SD_BUS_METHOD("ResetFailed",
997 bus_unit_method_reset_failed
,
998 SD_BUS_VTABLE_UNPRIVILEGED
),
999 SD_BUS_METHOD_WITH_NAMES("SetProperties",
1001 SD_BUS_PARAM(runtime
)
1002 SD_BUS_PARAM(properties
),
1004 bus_unit_method_set_properties
,
1005 SD_BUS_VTABLE_UNPRIVILEGED
),
1006 SD_BUS_METHOD("Ref",
1009 bus_unit_method_ref
,
1010 SD_BUS_VTABLE_UNPRIVILEGED
),
1011 SD_BUS_METHOD("Unref",
1014 bus_unit_method_unref
,
1015 SD_BUS_VTABLE_UNPRIVILEGED
),
1016 SD_BUS_METHOD_WITH_NAMES("Clean",
1020 bus_unit_method_clean
,
1021 SD_BUS_VTABLE_UNPRIVILEGED
),
1022 SD_BUS_METHOD("Freeze",
1025 bus_unit_method_freeze
,
1026 SD_BUS_VTABLE_UNPRIVILEGED
),
1027 SD_BUS_METHOD("Thaw",
1030 bus_unit_method_thaw
,
1031 SD_BUS_VTABLE_UNPRIVILEGED
),
1033 /* For dependency types we don't support anymore always return an empty array */
1034 SD_BUS_PROPERTY("RequiresOverridable", "as", property_get_empty_strv
, 0, SD_BUS_VTABLE_HIDDEN
),
1035 SD_BUS_PROPERTY("RequisiteOverridable", "as", property_get_empty_strv
, 0, SD_BUS_VTABLE_HIDDEN
),
1036 SD_BUS_PROPERTY("RequiredByOverridable", "as", property_get_empty_strv
, 0, SD_BUS_VTABLE_HIDDEN
),
1037 SD_BUS_PROPERTY("RequisiteOfOverridable", "as", property_get_empty_strv
, 0, SD_BUS_VTABLE_HIDDEN
),
1038 /* Obsolete alias names */
1039 SD_BUS_PROPERTY("StartLimitInterval", "t", bus_property_get_usec
, offsetof(Unit
, start_ratelimit
.interval
), SD_BUS_VTABLE_PROPERTY_CONST
|SD_BUS_VTABLE_HIDDEN
),
1040 SD_BUS_PROPERTY("StartLimitIntervalSec", "t", bus_property_get_usec
, offsetof(Unit
, start_ratelimit
.interval
), SD_BUS_VTABLE_PROPERTY_CONST
|SD_BUS_VTABLE_HIDDEN
),
1045 static int property_get_slice(
1048 const char *interface
,
1049 const char *property
,
1050 sd_bus_message
*reply
,
1052 sd_bus_error
*error
) {
1060 return sd_bus_message_append(reply
, "s", unit_slice_name(u
));
1063 static int property_get_current_memory(
1066 const char *interface
,
1067 const char *property
,
1068 sd_bus_message
*reply
,
1070 sd_bus_error
*error
) {
1072 uint64_t sz
= UINT64_MAX
;
1080 r
= unit_get_memory_current(u
, &sz
);
1081 if (r
< 0 && r
!= -ENODATA
)
1082 log_unit_warning_errno(u
, r
, "Failed to get memory.usage_in_bytes attribute: %m");
1084 return sd_bus_message_append(reply
, "t", sz
);
1087 static int property_get_current_tasks(
1090 const char *interface
,
1091 const char *property
,
1092 sd_bus_message
*reply
,
1094 sd_bus_error
*error
) {
1096 uint64_t cn
= UINT64_MAX
;
1104 r
= unit_get_tasks_current(u
, &cn
);
1105 if (r
< 0 && r
!= -ENODATA
)
1106 log_unit_warning_errno(u
, r
, "Failed to get pids.current attribute: %m");
1108 return sd_bus_message_append(reply
, "t", cn
);
1111 static int property_get_cpu_usage(
1114 const char *interface
,
1115 const char *property
,
1116 sd_bus_message
*reply
,
1118 sd_bus_error
*error
) {
1120 nsec_t ns
= NSEC_INFINITY
;
1128 r
= unit_get_cpu_usage(u
, &ns
);
1129 if (r
< 0 && r
!= -ENODATA
)
1130 log_unit_warning_errno(u
, r
, "Failed to get cpuacct.usage attribute: %m");
1132 return sd_bus_message_append(reply
, "t", ns
);
1135 static int property_get_cpuset_cpus(
1138 const char *interface
,
1139 const char *property
,
1140 sd_bus_message
*reply
,
1142 sd_bus_error
*error
) {
1145 _cleanup_(cpu_set_reset
) CPUSet cpus
= {};
1146 _cleanup_free_
uint8_t *array
= NULL
;
1153 (void) unit_get_cpuset(u
, &cpus
, "cpuset.cpus.effective");
1154 (void) cpu_set_to_dbus(&cpus
, &array
, &allocated
);
1155 return sd_bus_message_append_array(reply
, 'y', array
, allocated
);
1158 static int property_get_cpuset_mems(
1161 const char *interface
,
1162 const char *property
,
1163 sd_bus_message
*reply
,
1165 sd_bus_error
*error
) {
1168 _cleanup_(cpu_set_reset
) CPUSet mems
= {};
1169 _cleanup_free_
uint8_t *array
= NULL
;
1176 (void) unit_get_cpuset(u
, &mems
, "cpuset.mems.effective");
1177 (void) cpu_set_to_dbus(&mems
, &array
, &allocated
);
1178 return sd_bus_message_append_array(reply
, 'y', array
, allocated
);
1181 static int property_get_cgroup(
1184 const char *interface
,
1185 const char *property
,
1186 sd_bus_message
*reply
,
1188 sd_bus_error
*error
) {
1191 const char *t
= NULL
;
1197 /* Three cases: a) u->cgroup_path is NULL, in which case the
1198 * unit has no control group, which we report as the empty
1199 * string. b) u->cgroup_path is the empty string, which
1200 * indicates the root cgroup, which we report as "/". c) all
1201 * other cases we report as-is. */
1204 t
= empty_to_root(u
->cgroup_path
);
1206 return sd_bus_message_append(reply
, "s", t
);
1209 static int append_process(sd_bus_message
*reply
, const char *p
, pid_t pid
, Set
*pids
) {
1210 _cleanup_free_
char *buf
= NULL
, *cmdline
= NULL
;
1216 r
= set_put(pids
, PID_TO_PTR(pid
));
1217 if (IN_SET(r
, 0, -EEXIST
))
1223 r
= cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER
, pid
, &buf
);
1232 (void) get_process_cmdline(pid
, SIZE_MAX
, PROCESS_CMDLINE_COMM_FALLBACK
, &cmdline
);
1234 return sd_bus_message_append(reply
,
1241 static int append_cgroup(sd_bus_message
*reply
, const char *p
, Set
*pids
) {
1242 _cleanup_closedir_
DIR *d
= NULL
;
1243 _cleanup_fclose_
FILE *f
= NULL
;
1249 r
= cg_enumerate_processes(SYSTEMD_CGROUP_CONTROLLER
, p
, &f
);
1258 r
= cg_read_pid(f
, &pid
);
1264 if (is_kernel_thread(pid
) > 0)
1267 r
= append_process(reply
, p
, pid
, pids
);
1272 r
= cg_enumerate_subgroups(SYSTEMD_CGROUP_CONTROLLER
, p
, &d
);
1279 _cleanup_free_
char *g
= NULL
, *j
= NULL
;
1281 r
= cg_read_subgroup(d
, &g
);
1287 j
= path_join(empty_to_root(p
), g
);
1291 r
= append_cgroup(reply
, j
, pids
);
1299 int bus_unit_method_get_processes(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
1300 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*reply
= NULL
;
1301 _cleanup_set_free_ Set
*pids
= NULL
;
1308 r
= mac_selinux_unit_access_check(u
, message
, "status", error
);
1312 pids
= set_new(NULL
);
1316 r
= sd_bus_message_new_method_return(message
, &reply
);
1320 r
= sd_bus_message_open_container(reply
, 'a', "(sus)");
1324 if (u
->cgroup_path
) {
1325 r
= append_cgroup(reply
, u
->cgroup_path
, pids
);
1330 /* The main and control pids might live outside of the cgroup, hence fetch them separately */
1331 pid
= unit_main_pid(u
);
1333 r
= append_process(reply
, NULL
, pid
, pids
);
1338 pid
= unit_control_pid(u
);
1340 r
= append_process(reply
, NULL
, pid
, pids
);
1345 r
= sd_bus_message_close_container(reply
);
1349 return sd_bus_send(NULL
, reply
, NULL
);
1352 static int property_get_ip_counter(
1355 const char *interface
,
1356 const char *property
,
1357 sd_bus_message
*reply
,
1359 sd_bus_error
*error
) {
1361 static const char *const table
[_CGROUP_IP_ACCOUNTING_METRIC_MAX
] = {
1362 [CGROUP_IP_INGRESS_BYTES
] = "IPIngressBytes",
1363 [CGROUP_IP_EGRESS_BYTES
] = "IPEgressBytes",
1364 [CGROUP_IP_INGRESS_PACKETS
] = "IPIngressPackets",
1365 [CGROUP_IP_EGRESS_PACKETS
] = "IPEgressPackets",
1368 uint64_t value
= UINT64_MAX
;
1377 assert_se((metric
= string_table_lookup(table
, ELEMENTSOF(table
), property
)) >= 0);
1378 (void) unit_get_ip_accounting(u
, metric
, &value
);
1379 return sd_bus_message_append(reply
, "t", value
);
1382 static int property_get_io_counter(
1385 const char *interface
,
1386 const char *property
,
1387 sd_bus_message
*reply
,
1389 sd_bus_error
*error
) {
1391 static const char *const table
[_CGROUP_IO_ACCOUNTING_METRIC_MAX
] = {
1392 [CGROUP_IO_READ_BYTES
] = "IOReadBytes",
1393 [CGROUP_IO_WRITE_BYTES
] = "IOWriteBytes",
1394 [CGROUP_IO_READ_OPERATIONS
] = "IOReadOperations",
1395 [CGROUP_IO_WRITE_OPERATIONS
] = "IOWriteOperations",
1398 uint64_t value
= UINT64_MAX
;
1407 assert_se((metric
= string_table_lookup(table
, ELEMENTSOF(table
), property
)) >= 0);
1408 (void) unit_get_io_accounting(u
, metric
, false, &value
);
1409 return sd_bus_message_append(reply
, "t", value
);
1412 int bus_unit_method_attach_processes(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
1414 _cleanup_(sd_bus_creds_unrefp
) sd_bus_creds
*creds
= NULL
;
1415 _cleanup_set_free_ Set
*pids
= NULL
;
1422 /* This migrates the processes with the specified PIDs into the cgroup of this unit, optionally below a
1423 * specified cgroup path. Obviously this only works for units that actually maintain a cgroup
1424 * representation. If a process is already in the cgroup no operation is executed – in this case the specified
1425 * subcgroup path has no effect! */
1427 r
= mac_selinux_unit_access_check(u
, message
, "start", error
);
1431 r
= sd_bus_message_read(message
, "s", &path
);
1435 path
= empty_to_null(path
);
1437 if (!path_is_absolute(path
))
1438 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Control group path is not absolute: %s", path
);
1440 if (!path_is_normalized(path
))
1441 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Control group path is not normalized: %s", path
);
1444 if (!unit_cgroup_delegate(u
))
1445 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Process migration not available on non-delegated units.");
1447 if (UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(u
)))
1448 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Unit is not active, refusing.");
1450 r
= sd_bus_query_sender_creds(message
, SD_BUS_CREDS_EUID
|SD_BUS_CREDS_PID
, &creds
);
1454 r
= sd_bus_message_enter_container(message
, 'a', "u");
1458 uid_t process_uid
, sender_uid
;
1462 r
= sd_bus_message_read(message
, "u", &upid
);
1469 r
= sd_bus_creds_get_pid(creds
, &pid
);
1475 /* Filter out duplicates */
1476 if (set_contains(pids
, PID_TO_PTR(pid
)))
1479 /* Check if this process is suitable for attaching to this unit */
1480 r
= unit_pid_attachable(u
, pid
, error
);
1484 /* Let's query the sender's UID, so that we can make our security decisions */
1485 r
= sd_bus_creds_get_euid(creds
, &sender_uid
);
1489 /* Let's validate security: if the sender is root, then all is OK. If the sender is any other unit,
1490 * then the process' UID and the target unit's UID have to match the sender's UID */
1491 if (sender_uid
!= 0 && sender_uid
!= getuid()) {
1492 r
= get_process_uid(pid
, &process_uid
);
1494 return sd_bus_error_set_errnof(error
, r
, "Failed to retrieve process UID: %m");
1496 if (process_uid
!= sender_uid
)
1497 return sd_bus_error_setf(error
, SD_BUS_ERROR_ACCESS_DENIED
, "Process " PID_FMT
" not owned by client's UID. Refusing.", pid
);
1498 if (process_uid
!= u
->ref_uid
)
1499 return sd_bus_error_setf(error
, SD_BUS_ERROR_ACCESS_DENIED
, "Process " PID_FMT
" not owned by target unit's UID. Refusing.", pid
);
1503 pids
= set_new(NULL
);
1508 r
= set_put(pids
, PID_TO_PTR(pid
));
1513 r
= sd_bus_message_exit_container(message
);
1517 r
= unit_attach_pids_to_cgroup(u
, pids
, path
);
1519 return sd_bus_error_set_errnof(error
, r
, "Failed to attach processes to control group: %m");
1521 return sd_bus_reply_method_return(message
, NULL
);
1524 const sd_bus_vtable bus_unit_cgroup_vtable
[] = {
1525 SD_BUS_VTABLE_START(0),
1526 SD_BUS_PROPERTY("Slice", "s", property_get_slice
, 0, 0),
1527 SD_BUS_PROPERTY("ControlGroup", "s", property_get_cgroup
, 0, 0),
1528 SD_BUS_PROPERTY("MemoryCurrent", "t", property_get_current_memory
, 0, 0),
1529 SD_BUS_PROPERTY("CPUUsageNSec", "t", property_get_cpu_usage
, 0, 0),
1530 SD_BUS_PROPERTY("EffectiveCPUs", "ay", property_get_cpuset_cpus
, 0, 0),
1531 SD_BUS_PROPERTY("EffectiveMemoryNodes", "ay", property_get_cpuset_mems
, 0, 0),
1532 SD_BUS_PROPERTY("TasksCurrent", "t", property_get_current_tasks
, 0, 0),
1533 SD_BUS_PROPERTY("IPIngressBytes", "t", property_get_ip_counter
, 0, 0),
1534 SD_BUS_PROPERTY("IPIngressPackets", "t", property_get_ip_counter
, 0, 0),
1535 SD_BUS_PROPERTY("IPEgressBytes", "t", property_get_ip_counter
, 0, 0),
1536 SD_BUS_PROPERTY("IPEgressPackets", "t", property_get_ip_counter
, 0, 0),
1537 SD_BUS_PROPERTY("IOReadBytes", "t", property_get_io_counter
, 0, 0),
1538 SD_BUS_PROPERTY("IOReadOperations", "t", property_get_io_counter
, 0, 0),
1539 SD_BUS_PROPERTY("IOWriteBytes", "t", property_get_io_counter
, 0, 0),
1540 SD_BUS_PROPERTY("IOWriteOperations", "t", property_get_io_counter
, 0, 0),
1542 SD_BUS_METHOD_WITH_NAMES("GetProcesses",
1545 SD_BUS_PARAM(processes
),
1546 bus_unit_method_get_processes
,
1547 SD_BUS_VTABLE_UNPRIVILEGED
),
1549 SD_BUS_METHOD_WITH_NAMES("AttachProcesses",
1551 SD_BUS_PARAM(subcgroup
)
1554 bus_unit_method_attach_processes
,
1555 SD_BUS_VTABLE_UNPRIVILEGED
),
1560 static int send_new_signal(sd_bus
*bus
, void *userdata
) {
1561 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*m
= NULL
;
1562 _cleanup_free_
char *p
= NULL
;
1569 p
= unit_dbus_path(u
);
1573 r
= sd_bus_message_new_signal(
1576 "/org/freedesktop/systemd1",
1577 "org.freedesktop.systemd1.Manager",
1582 r
= sd_bus_message_append(m
, "so", u
->id
, p
);
1586 return sd_bus_send(bus
, m
, NULL
);
1589 static int send_changed_signal(sd_bus
*bus
, void *userdata
) {
1590 _cleanup_free_
char *p
= NULL
;
1597 p
= unit_dbus_path(u
);
1601 /* Send a properties changed signal. First for the specific
1602 * type, then for the generic unit. The clients may rely on
1603 * this order to get atomic behavior if needed. */
1605 r
= sd_bus_emit_properties_changed_strv(
1607 unit_dbus_interface_from_type(u
->type
),
1612 return sd_bus_emit_properties_changed_strv(
1614 "org.freedesktop.systemd1.Unit",
1618 void bus_unit_send_change_signal(Unit
*u
) {
1622 if (u
->in_dbus_queue
) {
1623 LIST_REMOVE(dbus_queue
, u
->manager
->dbus_unit_queue
, u
);
1624 u
->in_dbus_queue
= false;
1630 r
= bus_foreach_bus(u
->manager
, u
->bus_track
, u
->sent_dbus_new_signal
? send_changed_signal
: send_new_signal
, u
);
1632 log_unit_debug_errno(u
, r
, "Failed to send unit change signal for %s: %m", u
->id
);
1634 u
->sent_dbus_new_signal
= true;
1637 void bus_unit_send_pending_change_signal(Unit
*u
, bool including_new
) {
1639 /* Sends out any pending change signals, but only if they really are pending. This call is used when we are
1640 * about to change state in order to force out a PropertiesChanged signal beforehand if there was one pending
1641 * so that clients can follow the full state transition */
1643 if (!u
->in_dbus_queue
) /* If not enqueued, don't bother */
1646 if (!u
->sent_dbus_new_signal
&& !including_new
) /* If the unit was never announced, don't bother, it's fine if
1647 * the unit appears in the new state right-away (except if the
1648 * caller explicitly asked us to send it anyway) */
1651 if (MANAGER_IS_RELOADING(u
->manager
)) /* Don't generate unnecessary PropertiesChanged signals for the same unit
1652 * when we are reloading. */
1655 bus_unit_send_change_signal(u
);
1658 int bus_unit_send_pending_freezer_message(Unit
*u
) {
1663 if (!u
->pending_freezer_message
)
1666 r
= sd_bus_send(NULL
, u
->pending_freezer_message
, NULL
);
1668 log_warning_errno(r
, "Failed to send queued message, ignoring: %m");
1670 u
->pending_freezer_message
= sd_bus_message_unref(u
->pending_freezer_message
);
1675 static int send_removed_signal(sd_bus
*bus
, void *userdata
) {
1676 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*m
= NULL
;
1677 _cleanup_free_
char *p
= NULL
;
1684 p
= unit_dbus_path(u
);
1688 r
= sd_bus_message_new_signal(
1691 "/org/freedesktop/systemd1",
1692 "org.freedesktop.systemd1.Manager",
1697 r
= sd_bus_message_append(m
, "so", u
->id
, p
);
1701 return sd_bus_send(bus
, m
, NULL
);
1704 void bus_unit_send_removed_signal(Unit
*u
) {
1708 if (!u
->sent_dbus_new_signal
|| u
->in_dbus_queue
)
1709 bus_unit_send_change_signal(u
);
1714 r
= bus_foreach_bus(u
->manager
, u
->bus_track
, send_removed_signal
, u
);
1716 log_unit_debug_errno(u
, r
, "Failed to send unit remove signal for %s: %m", u
->id
);
1719 int bus_unit_queue_job_one(
1720 sd_bus_message
*message
,
1724 BusUnitQueueFlags flags
,
1725 sd_bus_message
*reply
,
1726 sd_bus_error
*error
) {
1728 _cleanup_set_free_ Set
*affected
= NULL
;
1729 _cleanup_free_
char *job_path
= NULL
, *unit_path
= NULL
;
1733 if (FLAGS_SET(flags
, BUS_UNIT_QUEUE_VERBOSE_REPLY
)) {
1734 affected
= set_new(NULL
);
1739 r
= manager_add_job(u
->manager
, type
, u
, mode
, affected
, error
, &j
);
1743 r
= bus_job_track_sender(j
, message
);
1747 /* Before we send the method reply, force out the announcement JobNew for this job */
1748 bus_job_send_pending_change_signal(j
, true);
1750 job_path
= job_dbus_path(j
);
1754 /* The classic response is just a job object path */
1755 if (!FLAGS_SET(flags
, BUS_UNIT_QUEUE_VERBOSE_REPLY
))
1756 return sd_bus_message_append(reply
, "o", job_path
);
1758 /* In verbose mode respond with the anchor job plus everything that has been affected */
1760 unit_path
= unit_dbus_path(j
->unit
);
1764 r
= sd_bus_message_append(reply
, "uosos",
1766 j
->unit
->id
, unit_path
,
1767 job_type_to_string(j
->type
));
1771 r
= sd_bus_message_open_container(reply
, 'a', "(uosos)");
1775 SET_FOREACH(a
, affected
) {
1779 /* Free paths from previous iteration */
1780 job_path
= mfree(job_path
);
1781 unit_path
= mfree(unit_path
);
1783 job_path
= job_dbus_path(a
);
1787 unit_path
= unit_dbus_path(a
->unit
);
1791 r
= sd_bus_message_append(reply
, "(uosos)",
1793 a
->unit
->id
, unit_path
,
1794 job_type_to_string(a
->type
));
1799 return sd_bus_message_close_container(reply
);
1802 int bus_unit_queue_job(
1803 sd_bus_message
*message
,
1807 BusUnitQueueFlags flags
,
1808 sd_bus_error
*error
) {
1810 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*reply
= NULL
;
1815 assert(type
>= 0 && type
< _JOB_TYPE_MAX
);
1816 assert(mode
>= 0 && mode
< _JOB_MODE_MAX
);
1818 r
= mac_selinux_unit_access_check(
1820 job_type_to_access_method(type
),
1825 if (FLAGS_SET(flags
, BUS_UNIT_QUEUE_RELOAD_IF_POSSIBLE
) && unit_can_reload(u
)) {
1826 if (type
== JOB_RESTART
)
1827 type
= JOB_RELOAD_OR_START
;
1828 else if (type
== JOB_TRY_RESTART
)
1829 type
= JOB_TRY_RELOAD
;
1832 if (type
== JOB_STOP
&&
1833 IN_SET(u
->load_state
, UNIT_NOT_FOUND
, UNIT_ERROR
, UNIT_BAD_SETTING
) &&
1834 unit_active_state(u
) == UNIT_INACTIVE
)
1835 return sd_bus_error_setf(error
, BUS_ERROR_NO_SUCH_UNIT
, "Unit %s not loaded.", u
->id
);
1837 if ((type
== JOB_START
&& u
->refuse_manual_start
) ||
1838 (type
== JOB_STOP
&& u
->refuse_manual_stop
) ||
1839 (IN_SET(type
, JOB_RESTART
, JOB_TRY_RESTART
) && (u
->refuse_manual_start
|| u
->refuse_manual_stop
)) ||
1840 (type
== JOB_RELOAD_OR_START
&& job_type_collapse(type
, u
) == JOB_START
&& u
->refuse_manual_start
))
1841 return sd_bus_error_setf(error
, BUS_ERROR_ONLY_BY_DEPENDENCY
, "Operation refused, unit %s may be requested by dependency only (it is configured to refuse manual start/stop).", u
->id
);
1843 r
= sd_bus_message_new_method_return(message
, &reply
);
1847 r
= bus_unit_queue_job_one(message
, u
, type
, mode
, flags
, reply
, error
);
1851 return sd_bus_send(NULL
, reply
, NULL
);
1854 static int bus_unit_set_live_property(
1857 sd_bus_message
*message
,
1858 UnitWriteFlags flags
,
1859 sd_bus_error
*error
) {
1867 /* Handles setting properties both "live" (i.e. at any time during runtime), and during creation (for
1868 * transient units that are being created). */
1870 if (streq(name
, "Description")) {
1873 r
= sd_bus_message_read(message
, "s", &d
);
1877 if (!UNIT_WRITE_FLAGS_NOOP(flags
)) {
1878 r
= unit_set_description(u
, d
);
1882 unit_write_settingf(u
, flags
|UNIT_ESCAPE_SPECIFIERS
, name
, "Description=%s", d
);
1888 /* A setting that only applies to active units. We don't actually write this to /run, this state is
1889 * managed internally. "+foo" sets flag foo, "-foo" unsets flag foo, just "foo" resets flags to
1890 * foo. The last type cannot be mixed with "+" or "-". */
1892 if (streq(name
, "Markers")) {
1893 unsigned settings
= 0, mask
= 0;
1894 bool some_plus_minus
= false, some_absolute
= false;
1896 r
= sd_bus_message_enter_container(message
, 'a', "s");
1904 r
= sd_bus_message_read(message
, "s", &word
);
1910 if (IN_SET(word
[0], '+', '-')) {
1913 some_plus_minus
= true;
1916 some_absolute
= true;
1919 UnitMarker m
= unit_marker_from_string(word
);
1921 return sd_bus_error_setf(error
, BUS_ERROR_BAD_UNIT_SETTING
,
1922 "Unknown marker \"%s\".", word
);
1924 SET_FLAG(settings
, 1u << m
, b
);
1925 SET_FLAG(mask
, 1u << m
, true);
1928 r
= sd_bus_message_exit_container(message
);
1932 if (some_plus_minus
&& some_absolute
)
1933 return sd_bus_error_setf(error
, BUS_ERROR_BAD_UNIT_SETTING
, "Bad marker syntax.");
1935 if (!UNIT_WRITE_FLAGS_NOOP(flags
)) {
1937 u
->markers
= settings
;
1939 u
->markers
= settings
| (u
->markers
& ~mask
);
1948 static int bus_set_transient_emergency_action(
1952 sd_bus_message
*message
,
1953 UnitWriteFlags flags
,
1954 sd_bus_error
*error
) {
1963 r
= sd_bus_message_read(message
, "s", &s
);
1967 system
= MANAGER_IS_SYSTEM(u
->manager
);
1968 r
= parse_emergency_action(s
, system
, &v
);
1970 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
,
1971 r
== -EOPNOTSUPP
? "%s setting invalid for manager type: %s"
1972 : "Invalid %s setting: %s",
1975 if (!UNIT_WRITE_FLAGS_NOOP(flags
)) {
1977 unit_write_settingf(u
, flags
, name
,
1984 static int bus_set_transient_exit_status(
1988 sd_bus_message
*message
,
1989 UnitWriteFlags flags
,
1990 sd_bus_error
*error
) {
1997 r
= sd_bus_message_read(message
, "i", &k
);
2002 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Exit status must be in range 0…255 or negative.");
2004 if (!UNIT_WRITE_FLAGS_NOOP(flags
)) {
2005 *p
= k
< 0 ? -1 : k
;
2008 unit_write_settingf(u
, flags
, name
, "%s=", name
);
2010 unit_write_settingf(u
, flags
, name
, "%s=%i", name
, k
);
2016 static BUS_DEFINE_SET_TRANSIENT_PARSE(collect_mode
, CollectMode
, collect_mode_from_string
);
2017 static BUS_DEFINE_SET_TRANSIENT_PARSE(job_mode
, JobMode
, job_mode_from_string
);
2019 static int bus_set_transient_conditions(
2024 sd_bus_message
*message
,
2025 UnitWriteFlags flags
,
2026 sd_bus_error
*error
) {
2028 const char *type_name
, *param
;
2029 int trigger
, negate
, r
;
2034 r
= sd_bus_message_enter_container(message
, 'a', "(sbbs)");
2038 while ((r
= sd_bus_message_read(message
, "(sbbs)", &type_name
, &trigger
, &negate
, ¶m
)) > 0) {
2041 t
= is_condition
? condition_type_from_string(type_name
) : assert_type_from_string(type_name
);
2043 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid condition type: %s", type_name
);
2046 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Condition parameter in %s is empty", type_name
);
2048 if (condition_takes_path(t
) && !path_is_absolute(param
))
2049 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Path in condition %s is not absolute: %s", type_name
, param
);
2051 if (!UNIT_WRITE_FLAGS_NOOP(flags
)) {
2054 c
= condition_new(t
, param
, trigger
, negate
);
2058 LIST_PREPEND(conditions
, *list
, c
);
2060 unit_write_settingf(u
, flags
|UNIT_ESCAPE_SPECIFIERS
, name
,
2061 "%s=%s%s%s", type_name
,
2062 trigger
? "|" : "", negate
? "!" : "", param
);
2070 r
= sd_bus_message_exit_container(message
);
2074 if (!UNIT_WRITE_FLAGS_NOOP(flags
) && empty
) {
2075 *list
= condition_free_list(*list
);
2076 unit_write_settingf(u
, flags
, name
, "%sNull=", is_condition
? "Condition" : "Assert");
2082 static int bus_unit_set_transient_property(
2085 sd_bus_message
*message
,
2086 UnitWriteFlags flags
,
2087 sd_bus_error
*error
) {
2096 /* Handles settings when transient units are created. This settings cannot be altered anymore after
2097 * the unit has been created. */
2099 if (streq(name
, "SourcePath"))
2100 return bus_set_transient_path(u
, name
, &u
->source_path
, message
, flags
, error
);
2102 if (streq(name
, "StopWhenUnneeded"))
2103 return bus_set_transient_bool(u
, name
, &u
->stop_when_unneeded
, message
, flags
, error
);
2105 if (streq(name
, "RefuseManualStart"))
2106 return bus_set_transient_bool(u
, name
, &u
->refuse_manual_start
, message
, flags
, error
);
2108 if (streq(name
, "RefuseManualStop"))
2109 return bus_set_transient_bool(u
, name
, &u
->refuse_manual_stop
, message
, flags
, error
);
2111 if (streq(name
, "AllowIsolate"))
2112 return bus_set_transient_bool(u
, name
, &u
->allow_isolate
, message
, flags
, error
);
2114 if (streq(name
, "DefaultDependencies"))
2115 return bus_set_transient_bool(u
, name
, &u
->default_dependencies
, message
, flags
, error
);
2117 if (streq(name
, "OnFailureJobMode"))
2118 return bus_set_transient_job_mode(u
, name
, &u
->on_failure_job_mode
, message
, flags
, error
);
2120 if (streq(name
, "IgnoreOnIsolate"))
2121 return bus_set_transient_bool(u
, name
, &u
->ignore_on_isolate
, message
, flags
, error
);
2123 if (streq(name
, "JobTimeoutUSec")) {
2124 r
= bus_set_transient_usec_fix_0(u
, name
, &u
->job_timeout
, message
, flags
, error
);
2125 if (r
>= 0 && !UNIT_WRITE_FLAGS_NOOP(flags
) && !u
->job_running_timeout_set
)
2126 u
->job_running_timeout
= u
->job_timeout
;
2129 if (streq(name
, "JobRunningTimeoutUSec")) {
2130 r
= bus_set_transient_usec_fix_0(u
, name
, &u
->job_running_timeout
, message
, flags
, error
);
2131 if (r
>= 0 && !UNIT_WRITE_FLAGS_NOOP(flags
))
2132 u
->job_running_timeout_set
= true;
2137 if (streq(name
, "JobTimeoutAction"))
2138 return bus_set_transient_emergency_action(u
, name
, &u
->job_timeout_action
, message
, flags
, error
);
2140 if (streq(name
, "JobTimeoutRebootArgument"))
2141 return bus_set_transient_string(u
, name
, &u
->job_timeout_reboot_arg
, message
, flags
, error
);
2143 if (streq(name
, "StartLimitIntervalUSec"))
2144 return bus_set_transient_usec(u
, name
, &u
->start_ratelimit
.interval
, message
, flags
, error
);
2146 if (streq(name
, "StartLimitBurst"))
2147 return bus_set_transient_unsigned(u
, name
, &u
->start_ratelimit
.burst
, message
, flags
, error
);
2149 if (streq(name
, "StartLimitAction"))
2150 return bus_set_transient_emergency_action(u
, name
, &u
->start_limit_action
, message
, flags
, error
);
2152 if (streq(name
, "FailureAction"))
2153 return bus_set_transient_emergency_action(u
, name
, &u
->failure_action
, message
, flags
, error
);
2155 if (streq(name
, "SuccessAction"))
2156 return bus_set_transient_emergency_action(u
, name
, &u
->success_action
, message
, flags
, error
);
2158 if (streq(name
, "FailureActionExitStatus"))
2159 return bus_set_transient_exit_status(u
, name
, &u
->failure_action_exit_status
, message
, flags
, error
);
2161 if (streq(name
, "SuccessActionExitStatus"))
2162 return bus_set_transient_exit_status(u
, name
, &u
->success_action_exit_status
, message
, flags
, error
);
2164 if (streq(name
, "RebootArgument"))
2165 return bus_set_transient_string(u
, name
, &u
->reboot_arg
, message
, flags
, error
);
2167 if (streq(name
, "CollectMode"))
2168 return bus_set_transient_collect_mode(u
, name
, &u
->collect_mode
, message
, flags
, error
);
2170 if (streq(name
, "Conditions"))
2171 return bus_set_transient_conditions(u
, name
, &u
->conditions
, true, message
, flags
, error
);
2173 if (streq(name
, "Asserts"))
2174 return bus_set_transient_conditions(u
, name
, &u
->asserts
, false, message
, flags
, error
);
2176 if (streq(name
, "Documentation")) {
2177 _cleanup_strv_free_
char **l
= NULL
;
2180 r
= sd_bus_message_read_strv(message
, &l
);
2184 STRV_FOREACH(p
, l
) {
2185 if (!documentation_url_is_valid(*p
))
2186 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid URL in %s: %s", name
, *p
);
2189 if (!UNIT_WRITE_FLAGS_NOOP(flags
)) {
2190 if (strv_isempty(l
)) {
2191 u
->documentation
= strv_free(u
->documentation
);
2192 unit_write_settingf(u
, flags
, name
, "%s=", name
);
2194 strv_extend_strv(&u
->documentation
, l
, false);
2197 unit_write_settingf(u
, flags
, name
, "%s=%s", name
, *p
);
2203 } else if (streq(name
, "Slice")) {
2207 if (!UNIT_HAS_CGROUP_CONTEXT(u
))
2208 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "The slice property is only available for units with control groups.");
2209 if (u
->type
== UNIT_SLICE
)
2210 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Slice may not be set for slice units.");
2211 if (unit_has_name(u
, SPECIAL_INIT_SCOPE
))
2212 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Cannot set slice for init.scope");
2214 r
= sd_bus_message_read(message
, "s", &s
);
2218 if (!unit_name_is_valid(s
, UNIT_NAME_PLAIN
))
2219 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid unit name '%s'", s
);
2221 /* Note that we do not dispatch the load queue here yet, as we don't want our own transient unit to be
2222 * loaded while we are still setting it up. Or in other words, we use manager_load_unit_prepare()
2223 * instead of manager_load_unit() on purpose, here. */
2224 r
= manager_load_unit_prepare(u
->manager
, s
, NULL
, error
, &slice
);
2228 if (slice
->type
!= UNIT_SLICE
)
2229 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Unit name '%s' is not a slice", s
);
2231 if (!UNIT_WRITE_FLAGS_NOOP(flags
)) {
2232 r
= unit_set_slice(u
, slice
);
2236 unit_write_settingf(u
, flags
|UNIT_PRIVATE
, name
, "Slice=%s", s
);
2241 } else if (streq(name
, "RequiresMountsFor")) {
2242 _cleanup_strv_free_
char **l
= NULL
;
2245 r
= sd_bus_message_read_strv(message
, &l
);
2249 STRV_FOREACH(p
, l
) {
2250 path_simplify(*p
, true);
2252 if (!path_is_absolute(*p
))
2253 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Path specified in %s is not absolute: %s", name
, *p
);
2255 if (!path_is_valid(*p
))
2256 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Path specified in %s has invalid length: %s", name
, *p
);
2258 if (!path_is_normalized(*p
))
2259 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Path specified in %s is not normalized: %s", name
, *p
);
2261 if (!UNIT_WRITE_FLAGS_NOOP(flags
)) {
2262 r
= unit_require_mounts_for(u
, *p
, UNIT_DEPENDENCY_FILE
);
2264 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Failed to add required mount \"%s\": %m", *p
);
2266 unit_write_settingf(u
, flags
, name
, "%s=%s", name
, *p
);
2273 if (streq(name
, "RequiresOverridable"))
2274 d
= UNIT_REQUIRES
; /* redirect for obsolete unit dependency type */
2275 else if (streq(name
, "RequisiteOverridable"))
2276 d
= UNIT_REQUISITE
; /* same here */
2278 d
= unit_dependency_from_string(name
);
2293 UNIT_PROPAGATES_RELOAD_TO
,
2294 UNIT_RELOAD_PROPAGATED_FROM
,
2295 UNIT_JOINS_NAMESPACE_OF
))
2296 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Dependency type %s may not be created transiently.", unit_dependency_to_string(d
));
2298 r
= sd_bus_message_enter_container(message
, 'a', "s");
2302 while ((r
= sd_bus_message_read(message
, "s", &other
)) > 0) {
2303 if (!unit_name_is_valid(other
, UNIT_NAME_PLAIN
|UNIT_NAME_INSTANCE
))
2304 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid unit name %s", other
);
2306 if (!UNIT_WRITE_FLAGS_NOOP(flags
)) {
2307 _cleanup_free_
char *label
= NULL
;
2309 r
= unit_add_dependency_by_name(u
, d
, other
, true, UNIT_DEPENDENCY_FILE
);
2313 label
= strjoin(name
, "-", other
);
2317 unit_write_settingf(u
, flags
, label
, "%s=%s", unit_dependency_to_string(d
), other
);
2324 r
= sd_bus_message_exit_container(message
);
2330 } else if (streq(name
, "AddRef")) {
2334 /* Why is this called "AddRef" rather than just "Ref", or "Reference"? There's already a "Ref()" method
2335 * on the Unit interface, and it's probably not a good idea to expose a property and a method on the
2336 * same interface (well, strictly speaking AddRef isn't exposed as full property, we just read it for
2337 * transient units, but still). And "References" and "ReferencedBy" is already used as unit reference
2338 * dependency type, hence let's not confuse things with that.
2340 * Note that we don't actually add the reference to the bus track. We do that only after the setup of
2341 * the transient unit is complete, so that setting this property multiple times in the same transient
2342 * unit creation call doesn't count as individual references. */
2344 r
= sd_bus_message_read(message
, "b", &b
);
2348 if (!UNIT_WRITE_FLAGS_NOOP(flags
))
2349 u
->bus_track_add
= b
;
2357 int bus_unit_set_properties(
2359 sd_bus_message
*message
,
2360 UnitWriteFlags flags
,
2362 sd_bus_error
*error
) {
2364 bool for_real
= false;
2371 /* We iterate through the array twice. First run we just check
2372 * if all passed data is valid, second run actually applies
2373 * it. This is to implement transaction-like behaviour without
2374 * actually providing full transactions. */
2376 r
= sd_bus_message_enter_container(message
, 'a', "(sv)");
2384 r
= sd_bus_message_enter_container(message
, 'r', "sv");
2388 if (for_real
|| UNIT_WRITE_FLAGS_NOOP(flags
))
2391 /* Reached EOF. Let's try again, and this time for realz... */
2392 r
= sd_bus_message_rewind(message
, false);
2400 r
= sd_bus_message_read(message
, "s", &name
);
2404 if (!UNIT_VTABLE(u
)->bus_set_property
)
2405 return sd_bus_error_setf(error
, SD_BUS_ERROR_PROPERTY_READ_ONLY
,
2406 "Objects of this type do not support setting properties.");
2408 r
= sd_bus_message_enter_container(message
, 'v', NULL
);
2412 /* If not for real, then mask out the two target flags */
2413 f
= for_real
? flags
: (flags
& ~(UNIT_RUNTIME
|UNIT_PERSISTENT
));
2415 r
= UNIT_VTABLE(u
)->bus_set_property(u
, name
, message
, f
, error
);
2416 if (r
== 0 && u
->transient
&& u
->load_state
== UNIT_STUB
)
2417 r
= bus_unit_set_transient_property(u
, name
, message
, f
, error
);
2419 r
= bus_unit_set_live_property(u
, name
, message
, f
, error
);
2424 return sd_bus_error_setf(error
, SD_BUS_ERROR_PROPERTY_READ_ONLY
,
2425 "Cannot set property %s, or unknown property.", name
);
2427 r
= sd_bus_message_exit_container(message
);
2431 r
= sd_bus_message_exit_container(message
);
2438 r
= sd_bus_message_exit_container(message
);
2442 if (commit
&& n
> 0 && UNIT_VTABLE(u
)->bus_commit_properties
)
2443 UNIT_VTABLE(u
)->bus_commit_properties(u
);
2448 int bus_unit_validate_load_state(Unit
*u
, sd_bus_error
*error
) {
2451 /* Generates a pretty error if a unit isn't properly loaded. */
2453 switch (u
->load_state
) {
2458 case UNIT_NOT_FOUND
:
2459 return sd_bus_error_setf(error
, BUS_ERROR_NO_SUCH_UNIT
, "Unit %s not found.", u
->id
);
2461 case UNIT_BAD_SETTING
:
2462 return sd_bus_error_setf(error
, BUS_ERROR_BAD_UNIT_SETTING
, "Unit %s has a bad unit file setting.", u
->id
);
2464 case UNIT_ERROR
: /* Only show .load_error in UNIT_ERROR state */
2465 return sd_bus_error_set_errnof(error
, u
->load_error
,
2466 "Unit %s failed to load properly, please adjust/correct and reload service manager: %m", u
->id
);
2469 return sd_bus_error_setf(error
, BUS_ERROR_UNIT_MASKED
, "Unit %s is masked.", u
->id
);
2474 return sd_bus_error_setf(error
, BUS_ERROR_NO_SUCH_UNIT
, "Unexpected load state of unit %s", u
->id
);
2478 static int bus_unit_track_handler(sd_bus_track
*t
, void *userdata
) {
2484 u
->bus_track
= sd_bus_track_unref(u
->bus_track
); /* make sure we aren't called again */
2486 /* If the client that tracks us disappeared, then there's reason to believe that the cgroup is empty now too,
2488 unit_add_to_cgroup_empty_queue(u
);
2490 /* Also add the unit to the GC queue, after all if the client left it might be time to GC this unit */
2491 unit_add_to_gc_queue(u
);
2496 static int bus_unit_allocate_bus_track(Unit
*u
) {
2504 r
= sd_bus_track_new(u
->manager
->api_bus
, &u
->bus_track
, bus_unit_track_handler
, u
);
2508 r
= sd_bus_track_set_recursive(u
->bus_track
, true);
2510 u
->bus_track
= sd_bus_track_unref(u
->bus_track
);
2517 int bus_unit_track_add_name(Unit
*u
, const char *name
) {
2522 r
= bus_unit_allocate_bus_track(u
);
2526 return sd_bus_track_add_name(u
->bus_track
, name
);
2529 int bus_unit_track_add_sender(Unit
*u
, sd_bus_message
*m
) {
2534 r
= bus_unit_allocate_bus_track(u
);
2538 return sd_bus_track_add_sender(u
->bus_track
, m
);
2541 int bus_unit_track_remove_sender(Unit
*u
, sd_bus_message
*m
) {
2544 /* If we haven't allocated the bus track object yet, then there's definitely no reference taken yet,
2545 * return an error */
2549 return sd_bus_track_remove_sender(u
->bus_track
, m
);