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-manager.h"
14 #include "dbus-unit.h"
15 #include "dbus-util.h"
19 #include "locale-util.h"
21 #include "path-util.h"
22 #include "process-util.h"
23 #include "selinux-access.h"
24 #include "signal-util.h"
26 #include "string-table.h"
27 #include "string-util.h"
29 #include "user-util.h"
32 static bool unit_can_start_refuse_manual(Unit
*u
) {
33 return unit_can_start(u
) && !u
->refuse_manual_start
;
36 static bool unit_can_stop_refuse_manual(Unit
*u
) {
37 return unit_can_stop(u
) && !u
->refuse_manual_stop
;
40 static bool unit_can_isolate_refuse_manual(Unit
*u
) {
41 return unit_can_isolate(u
) && !u
->refuse_manual_start
;
44 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_collect_mode
, collect_mode
, CollectMode
);
45 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_load_state
, unit_load_state
, UnitLoadState
);
46 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_job_mode
, job_mode
, JobMode
);
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 if (FLAGS_SET(mask
, EXEC_CLEAN_FDSTORE
)) {
94 r
= sd_bus_message_append(reply
, "s", "fdstore");
99 return sd_bus_message_close_container(reply
);
102 static int property_get_names(
105 const char *interface
,
106 const char *property
,
107 sd_bus_message
*reply
,
109 sd_bus_error
*error
) {
111 Unit
*u
= ASSERT_PTR(userdata
);
118 r
= sd_bus_message_open_container(reply
, 'a', "s");
122 r
= sd_bus_message_append(reply
, "s", u
->id
);
126 SET_FOREACH(t
, u
->aliases
) {
127 r
= sd_bus_message_append(reply
, "s", t
);
132 return sd_bus_message_close_container(reply
);
135 static int property_get_following(
138 const char *interface
,
139 const char *property
,
140 sd_bus_message
*reply
,
142 sd_bus_error
*error
) {
144 Unit
*u
= userdata
, *f
;
150 f
= unit_following(u
);
151 return sd_bus_message_append(reply
, "s", f
? f
->id
: NULL
);
154 static int property_get_dependencies(
157 const char *interface
,
158 const char *property
,
159 sd_bus_message
*reply
,
161 sd_bus_error
*error
) {
163 Unit
*u
= userdata
, *other
;
173 d
= unit_dependency_from_string(property
);
176 deps
= unit_get_dependencies(u
, d
);
178 r
= sd_bus_message_open_container(reply
, 'a', "s");
182 HASHMAP_FOREACH_KEY(v
, other
, deps
) {
183 r
= sd_bus_message_append(reply
, "s", other
->id
);
188 return sd_bus_message_close_container(reply
);
191 static int property_get_requires_mounts_for(
194 const char *interface
,
195 const char *property
,
196 sd_bus_message
*reply
,
198 sd_bus_error
*error
) {
200 Hashmap
**h
= ASSERT_PTR(userdata
);
208 r
= sd_bus_message_open_container(reply
, 'a', "s");
212 HASHMAP_FOREACH_KEY(v
, p
, *h
) {
213 r
= sd_bus_message_append(reply
, "s", p
);
218 return sd_bus_message_close_container(reply
);
221 static int property_get_unit_file_preset(
224 const char *interface
,
225 const char *property
,
226 sd_bus_message
*reply
,
228 sd_bus_error
*error
) {
230 Unit
*u
= ASSERT_PTR(userdata
);
236 r
= unit_get_unit_file_preset(u
);
238 return sd_bus_message_append(reply
, "s", preset_action_past_tense_to_string(r
));
241 static int property_get_job(
244 const char *interface
,
245 const char *property
,
246 sd_bus_message
*reply
,
248 sd_bus_error
*error
) {
250 _cleanup_free_
char *p
= NULL
;
251 Job
**j
= ASSERT_PTR(userdata
);
257 return sd_bus_message_append(reply
, "(uo)", 0, "/");
259 p
= job_dbus_path(*j
);
263 return sd_bus_message_append(reply
, "(uo)", (*j
)->id
, p
);
266 static int property_get_conditions(
269 const char *interface
,
270 const char *property
,
271 sd_bus_message
*reply
,
273 sd_bus_error
*error
) {
275 const char *(*to_string
)(ConditionType type
) = NULL
;
276 Condition
**list
= ASSERT_PTR(userdata
);
282 to_string
= streq(property
, "Asserts") ? assert_type_to_string
: condition_type_to_string
;
284 r
= sd_bus_message_open_container(reply
, 'a', "(sbbsi)");
288 LIST_FOREACH(conditions
, c
, *list
) {
292 c
->result
== CONDITION_UNTESTED
? 0 :
293 c
->result
== CONDITION_SUCCEEDED
? 1 : -1;
295 r
= sd_bus_message_append(reply
, "(sbbsi)",
297 c
->trigger
, c
->negate
,
298 c
->parameter
, tristate
);
304 return sd_bus_message_close_container(reply
);
307 static int property_get_load_error(
310 const char *interface
,
311 const char *property
,
312 sd_bus_message
*reply
,
314 sd_bus_error
*error
) {
316 _cleanup_(sd_bus_error_free
) sd_bus_error e
= SD_BUS_ERROR_NULL
;
317 Unit
*u
= ASSERT_PTR(userdata
);
323 r
= bus_unit_validate_load_state(u
, &e
);
325 return sd_bus_message_append(reply
, "(ss)", e
.name
, e
.message
);
327 return sd_bus_message_append(reply
, "(ss)", NULL
, NULL
);
330 static int property_get_markers(
333 const char *interface
,
334 const char *property
,
335 sd_bus_message
*reply
,
337 sd_bus_error
*error
) {
339 unsigned *markers
= ASSERT_PTR(userdata
);
345 r
= sd_bus_message_open_container(reply
, 'a', "s");
349 /* Make sure out values fit in the bitfield. */
350 assert_cc(_UNIT_MARKER_MAX
<= sizeof(((Unit
){}).markers
) * 8);
352 for (UnitMarker m
= 0; m
< _UNIT_MARKER_MAX
; m
++)
353 if (FLAGS_SET(*markers
, 1u << m
)) {
354 r
= sd_bus_message_append(reply
, "s", unit_marker_to_string(m
));
359 return sd_bus_message_close_container(reply
);
362 static const char *const polkit_message_for_job
[_JOB_TYPE_MAX
] = {
363 [JOB_START
] = N_("Authentication is required to start '$(unit)'."),
364 [JOB_STOP
] = N_("Authentication is required to stop '$(unit)'."),
365 [JOB_RELOAD
] = N_("Authentication is required to reload '$(unit)'."),
366 [JOB_RESTART
] = N_("Authentication is required to restart '$(unit)'."),
367 [JOB_TRY_RESTART
] = N_("Authentication is required to restart '$(unit)'."),
370 int bus_unit_method_start_generic(
371 sd_bus_message
*message
,
374 bool reload_if_possible
,
375 sd_bus_error
*error
) {
377 BusUnitQueueFlags job_flags
= reload_if_possible
? BUS_UNIT_QUEUE_RELOAD_IF_POSSIBLE
: 0;
378 const char *smode
, *verb
;
384 assert(job_type
>= 0 && job_type
< _JOB_TYPE_MAX
);
386 r
= mac_selinux_unit_access_check(
388 job_type_to_access_method(job_type
),
393 r
= sd_bus_message_read(message
, "s", &smode
);
397 mode
= job_mode_from_string(smode
);
399 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Job mode %s invalid", smode
);
401 if (reload_if_possible
)
402 verb
= strjoina("reload-or-", job_type_to_string(job_type
));
404 verb
= job_type_to_string(job_type
);
406 if (sd_bus_message_is_method_call(message
, NULL
, "StartUnitWithFlags")) {
407 uint64_t input_flags
= 0;
409 r
= sd_bus_message_read(message
, "t", &input_flags
);
412 /* Let clients know that this version doesn't support any flags at the moment. */
413 if (input_flags
!= 0)
414 return sd_bus_reply_method_errorf(message
, SD_BUS_ERROR_INVALID_ARGS
,
415 "Invalid 'flags' parameter '%" PRIu64
"'",
419 r
= bus_verify_manage_units_async_full(
423 polkit_message_for_job
[job_type
],
430 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
432 return bus_unit_queue_job(message
, u
, job_type
, mode
, job_flags
, error
);
435 static int bus_unit_method_start(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
436 return bus_unit_method_start_generic(message
, userdata
, JOB_START
, false, error
);
439 static int bus_unit_method_stop(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
440 return bus_unit_method_start_generic(message
, userdata
, JOB_STOP
, false, error
);
443 static int bus_unit_method_reload(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
444 return bus_unit_method_start_generic(message
, userdata
, JOB_RELOAD
, false, error
);
447 static int bus_unit_method_restart(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
448 return bus_unit_method_start_generic(message
, userdata
, JOB_RESTART
, false, error
);
451 static int bus_unit_method_try_restart(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
452 return bus_unit_method_start_generic(message
, userdata
, JOB_TRY_RESTART
, false, error
);
455 static int bus_unit_method_reload_or_restart(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
456 return bus_unit_method_start_generic(message
, userdata
, JOB_RESTART
, true, error
);
459 static int bus_unit_method_reload_or_try_restart(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
460 return bus_unit_method_start_generic(message
, userdata
, JOB_TRY_RESTART
, true, error
);
463 int bus_unit_method_enqueue_job(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
464 BusUnitQueueFlags flags
= BUS_UNIT_QUEUE_VERBOSE_REPLY
;
465 const char *jtype
, *smode
;
466 Unit
*u
= ASSERT_PTR(userdata
);
473 r
= sd_bus_message_read(message
, "ss", &jtype
, &smode
);
477 /* Parse the two magic reload types "reload-or-…" manually */
478 if (streq(jtype
, "reload-or-restart")) {
480 flags
|= BUS_UNIT_QUEUE_RELOAD_IF_POSSIBLE
;
481 } else if (streq(jtype
, "reload-or-try-restart")) {
482 type
= JOB_TRY_RESTART
;
483 flags
|= BUS_UNIT_QUEUE_RELOAD_IF_POSSIBLE
;
485 /* And the rest generically */
486 type
= job_type_from_string(jtype
);
488 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Job type %s invalid", jtype
);
491 mode
= job_mode_from_string(smode
);
493 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Job mode %s invalid", smode
);
495 r
= mac_selinux_unit_access_check(
497 job_type_to_access_method(type
),
502 r
= bus_verify_manage_units_async_full(
506 polkit_message_for_job
[type
],
513 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
515 return bus_unit_queue_job(message
, u
, type
, mode
, flags
, error
);
518 int bus_unit_method_kill(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
519 Unit
*u
= ASSERT_PTR(userdata
);
528 r
= mac_selinux_unit_access_check(u
, message
, "stop", error
);
532 r
= sd_bus_message_read(message
, "si", &swho
, &signo
);
536 if (startswith(sd_bus_message_get_member(message
), "QueueSignal")) {
537 r
= sd_bus_message_read(message
, "i", &value
);
548 who
= kill_who_from_string(swho
);
550 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid who argument: %s", swho
);
553 if (!SIGNAL_VALID(signo
))
554 return sd_bus_error_set(error
, SD_BUS_ERROR_INVALID_ARGS
, "Signal number out of range.");
556 if (code
== SI_QUEUE
&& !((signo
>= SIGRTMIN
) && (signo
<= SIGRTMAX
)))
557 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
,
558 "Value parameter only accepted for realtime signals (SIGRTMIN…SIGRTMAX), refusing for signal SIG%s.", signal_to_string(signo
));
560 r
= bus_verify_manage_units_async_full(
564 N_("Authentication is required to send a UNIX signal to the processes of '$(unit)'."),
571 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
573 r
= unit_kill(u
, who
, signo
, code
, value
, error
);
577 return sd_bus_reply_method_return(message
, NULL
);
580 int bus_unit_method_reset_failed(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
581 Unit
*u
= ASSERT_PTR(userdata
);
586 r
= mac_selinux_unit_access_check(u
, message
, "reload", error
);
590 r
= bus_verify_manage_units_async_full(
594 N_("Authentication is required to reset the \"failed\" state of '$(unit)'."),
601 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
603 unit_reset_failed(u
);
605 return sd_bus_reply_method_return(message
, NULL
);
608 int bus_unit_method_set_properties(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
609 Unit
*u
= ASSERT_PTR(userdata
);
614 r
= mac_selinux_unit_access_check(u
, message
, "start", error
);
618 r
= sd_bus_message_read(message
, "b", &runtime
);
622 r
= bus_verify_manage_units_async_full(
626 N_("Authentication is required to set properties on '$(unit)'."),
633 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
635 r
= bus_unit_set_properties(u
, message
, runtime
? UNIT_RUNTIME
: UNIT_PERSISTENT
, true, error
);
639 return sd_bus_reply_method_return(message
, NULL
);
642 int bus_unit_method_ref(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
643 Unit
*u
= ASSERT_PTR(userdata
);
648 r
= mac_selinux_unit_access_check(u
, message
, "start", error
);
652 r
= bus_verify_manage_units_async_full(
663 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
665 r
= bus_unit_track_add_sender(u
, message
);
669 return sd_bus_reply_method_return(message
, NULL
);
672 int bus_unit_method_unref(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
673 Unit
*u
= ASSERT_PTR(userdata
);
678 r
= bus_unit_track_remove_sender(u
, message
);
680 return sd_bus_error_set(error
, BUS_ERROR_NOT_REFERENCED
, "Unit has not been referenced yet.");
684 return sd_bus_reply_method_return(message
, NULL
);
687 int bus_unit_method_clean(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
688 ExecCleanMask mask
= 0;
689 Unit
*u
= ASSERT_PTR(userdata
);
694 r
= mac_selinux_unit_access_check(u
, message
, "stop", error
);
698 r
= sd_bus_message_enter_container(message
, 'a', "s");
706 r
= sd_bus_message_read(message
, "s", &i
);
712 m
= exec_clean_mask_from_string(i
);
714 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid resource type: %s", i
);
719 r
= sd_bus_message_exit_container(message
);
723 r
= bus_verify_manage_units_async_full(
727 N_("Authentication is required to delete files and directories associated with '$(unit)'."),
734 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
736 r
= unit_clean(u
, mask
);
737 if (r
== -EOPNOTSUPP
)
738 return sd_bus_error_setf(error
, SD_BUS_ERROR_NOT_SUPPORTED
, "Unit '%s' does not support cleaning.", u
->id
);
740 return sd_bus_error_set(error
, BUS_ERROR_NOTHING_TO_CLEAN
, "No matching resources found.");
742 return sd_bus_error_set(error
, BUS_ERROR_UNIT_BUSY
, "Unit is not inactive or has pending job.");
746 return sd_bus_reply_method_return(message
, NULL
);
749 static int bus_unit_method_freezer_generic(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
, FreezerAction action
) {
751 int (*method
)(Unit
*);
752 Unit
*u
= ASSERT_PTR(userdata
);
753 bool reply_no_delay
= false;
757 assert(IN_SET(action
, FREEZER_FREEZE
, FREEZER_THAW
));
759 if (action
== FREEZER_FREEZE
) {
761 method
= unit_freeze
;
767 r
= mac_selinux_unit_access_check(u
, message
, perm
, error
);
771 r
= bus_verify_manage_units_async_full(
775 N_("Authentication is required to freeze or thaw the processes of '$(unit)' unit."),
782 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
785 if (r
== -EOPNOTSUPP
)
786 return sd_bus_error_setf(error
, SD_BUS_ERROR_NOT_SUPPORTED
, "Unit '%s' does not support freezing.", u
->id
);
788 return sd_bus_error_set(error
, BUS_ERROR_UNIT_BUSY
, "Unit has a pending job.");
790 return sd_bus_error_set(error
, BUS_ERROR_UNIT_INACTIVE
, "Unit is inactive.");
792 return sd_bus_error_setf(error
, SD_BUS_ERROR_FAILED
, "Previously requested freezer operation for unit '%s' is still in progress.", u
->id
);
796 reply_no_delay
= true;
798 if (u
->pending_freezer_invocation
) {
799 bus_unit_send_pending_freezer_message(u
, true);
800 assert(!u
->pending_freezer_invocation
);
803 u
->pending_freezer_invocation
= sd_bus_message_ref(message
);
805 if (reply_no_delay
) {
806 r
= bus_unit_send_pending_freezer_message(u
, false);
814 int bus_unit_method_thaw(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
815 return bus_unit_method_freezer_generic(message
, userdata
, error
, FREEZER_THAW
);
818 int bus_unit_method_freeze(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
819 return bus_unit_method_freezer_generic(message
, userdata
, error
, FREEZER_FREEZE
);
822 static int property_get_refs(
825 const char *interface
,
826 const char *property
,
827 sd_bus_message
*reply
,
829 sd_bus_error
*error
) {
837 r
= sd_bus_message_open_container(reply
, 'a', "s");
841 for (const char *i
= sd_bus_track_first(u
->bus_track
); i
; i
= sd_bus_track_next(u
->bus_track
)) {
844 c
= sd_bus_track_count_name(u
->bus_track
, i
);
848 /* Add the item multiple times if the ref count for each is above 1 */
849 for (int k
= 0; k
< c
; k
++) {
850 r
= sd_bus_message_append(reply
, "s", i
);
856 return sd_bus_message_close_container(reply
);
859 const sd_bus_vtable bus_unit_vtable
[] = {
860 SD_BUS_VTABLE_START(0),
862 SD_BUS_PROPERTY("Id", "s", NULL
, offsetof(Unit
, id
), SD_BUS_VTABLE_PROPERTY_CONST
),
863 SD_BUS_PROPERTY("Names", "as", property_get_names
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
864 SD_BUS_PROPERTY("Following", "s", property_get_following
, 0, 0),
865 SD_BUS_PROPERTY("Requires", "as", property_get_dependencies
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
866 SD_BUS_PROPERTY("Requisite", "as", property_get_dependencies
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
867 SD_BUS_PROPERTY("Wants", "as", property_get_dependencies
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
868 SD_BUS_PROPERTY("BindsTo", "as", property_get_dependencies
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
869 SD_BUS_PROPERTY("PartOf", "as", property_get_dependencies
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
870 SD_BUS_PROPERTY("Upholds", "as", property_get_dependencies
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
871 SD_BUS_PROPERTY("RequiredBy", "as", property_get_dependencies
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
872 SD_BUS_PROPERTY("RequisiteOf", "as", property_get_dependencies
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
873 SD_BUS_PROPERTY("WantedBy", "as", property_get_dependencies
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
874 SD_BUS_PROPERTY("BoundBy", "as", property_get_dependencies
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
875 SD_BUS_PROPERTY("UpheldBy", "as", property_get_dependencies
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
876 SD_BUS_PROPERTY("ConsistsOf", "as", property_get_dependencies
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
877 SD_BUS_PROPERTY("Conflicts", "as", property_get_dependencies
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
878 SD_BUS_PROPERTY("ConflictedBy", "as", property_get_dependencies
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
879 SD_BUS_PROPERTY("Before", "as", property_get_dependencies
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
880 SD_BUS_PROPERTY("After", "as", property_get_dependencies
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
881 SD_BUS_PROPERTY("OnSuccess", "as", property_get_dependencies
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
882 SD_BUS_PROPERTY("OnSuccessOf", "as", property_get_dependencies
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
883 SD_BUS_PROPERTY("OnFailure", "as", property_get_dependencies
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
884 SD_BUS_PROPERTY("OnFailureOf", "as", property_get_dependencies
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
885 SD_BUS_PROPERTY("Triggers", "as", property_get_dependencies
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
886 SD_BUS_PROPERTY("TriggeredBy", "as", property_get_dependencies
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
887 SD_BUS_PROPERTY("PropagatesReloadTo", "as", property_get_dependencies
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
888 SD_BUS_PROPERTY("ReloadPropagatedFrom", "as", property_get_dependencies
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
889 SD_BUS_PROPERTY("PropagatesStopTo", "as", property_get_dependencies
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
890 SD_BUS_PROPERTY("StopPropagatedFrom", "as", property_get_dependencies
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
891 SD_BUS_PROPERTY("JoinsNamespaceOf", "as", property_get_dependencies
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
892 SD_BUS_PROPERTY("SliceOf", "as", property_get_dependencies
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
893 SD_BUS_PROPERTY("RequiresMountsFor", "as", property_get_requires_mounts_for
, offsetof(Unit
, requires_mounts_for
), SD_BUS_VTABLE_PROPERTY_CONST
),
894 SD_BUS_PROPERTY("Documentation", "as", NULL
, offsetof(Unit
, documentation
), SD_BUS_VTABLE_PROPERTY_CONST
),
895 SD_BUS_PROPERTY("Description", "s", property_get_description
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
896 SD_BUS_PROPERTY("AccessSELinuxContext", "s", NULL
, offsetof(Unit
, access_selinux_context
), SD_BUS_VTABLE_PROPERTY_CONST
),
897 SD_BUS_PROPERTY("LoadState", "s", property_get_load_state
, offsetof(Unit
, load_state
), SD_BUS_VTABLE_PROPERTY_CONST
),
898 SD_BUS_PROPERTY("ActiveState", "s", property_get_active_state
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
899 SD_BUS_PROPERTY("FreezerState", "s", property_get_freezer_state
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
900 SD_BUS_PROPERTY("SubState", "s", property_get_sub_state
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
901 SD_BUS_PROPERTY("FragmentPath", "s", NULL
, offsetof(Unit
, fragment_path
), SD_BUS_VTABLE_PROPERTY_CONST
),
902 SD_BUS_PROPERTY("SourcePath", "s", NULL
, offsetof(Unit
, source_path
), SD_BUS_VTABLE_PROPERTY_CONST
),
903 SD_BUS_PROPERTY("DropInPaths", "as", NULL
, offsetof(Unit
, dropin_paths
), SD_BUS_VTABLE_PROPERTY_CONST
),
904 SD_BUS_PROPERTY("UnitFileState", "s", property_get_unit_file_state
, 0, 0),
905 SD_BUS_PROPERTY("UnitFilePreset", "s", property_get_unit_file_preset
, 0, 0),
906 BUS_PROPERTY_DUAL_TIMESTAMP("StateChangeTimestamp", offsetof(Unit
, state_change_timestamp
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
907 BUS_PROPERTY_DUAL_TIMESTAMP("InactiveExitTimestamp", offsetof(Unit
, inactive_exit_timestamp
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
908 BUS_PROPERTY_DUAL_TIMESTAMP("ActiveEnterTimestamp", offsetof(Unit
, active_enter_timestamp
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
909 BUS_PROPERTY_DUAL_TIMESTAMP("ActiveExitTimestamp", offsetof(Unit
, active_exit_timestamp
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
910 BUS_PROPERTY_DUAL_TIMESTAMP("InactiveEnterTimestamp", offsetof(Unit
, inactive_enter_timestamp
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
911 SD_BUS_PROPERTY("CanStart", "b", property_get_can_start
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
912 SD_BUS_PROPERTY("CanStop", "b", property_get_can_stop
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
913 SD_BUS_PROPERTY("CanReload", "b", property_get_can_reload
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
914 SD_BUS_PROPERTY("CanIsolate", "b", property_get_can_isolate
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
915 SD_BUS_PROPERTY("CanClean", "as", property_get_can_clean
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
916 SD_BUS_PROPERTY("CanFreeze", "b", property_get_can_freeze
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
917 SD_BUS_PROPERTY("Job", "(uo)", property_get_job
, offsetof(Unit
, job
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
918 SD_BUS_PROPERTY("StopWhenUnneeded", "b", bus_property_get_bool
, offsetof(Unit
, stop_when_unneeded
), SD_BUS_VTABLE_PROPERTY_CONST
),
919 SD_BUS_PROPERTY("RefuseManualStart", "b", bus_property_get_bool
, offsetof(Unit
, refuse_manual_start
), SD_BUS_VTABLE_PROPERTY_CONST
),
920 SD_BUS_PROPERTY("RefuseManualStop", "b", bus_property_get_bool
, offsetof(Unit
, refuse_manual_stop
), SD_BUS_VTABLE_PROPERTY_CONST
),
921 SD_BUS_PROPERTY("AllowIsolate", "b", bus_property_get_bool
, offsetof(Unit
, allow_isolate
), SD_BUS_VTABLE_PROPERTY_CONST
),
922 SD_BUS_PROPERTY("DefaultDependencies", "b", bus_property_get_bool
, offsetof(Unit
, default_dependencies
), SD_BUS_VTABLE_PROPERTY_CONST
),
923 SD_BUS_PROPERTY("OnSuccesJobMode", "s", property_get_job_mode
, offsetof(Unit
, on_success_job_mode
), SD_BUS_VTABLE_PROPERTY_CONST
|SD_BUS_VTABLE_HIDDEN
), /* deprecated */
924 SD_BUS_PROPERTY("OnSuccessJobMode", "s", property_get_job_mode
, offsetof(Unit
, on_success_job_mode
), SD_BUS_VTABLE_PROPERTY_CONST
),
925 SD_BUS_PROPERTY("OnFailureJobMode", "s", property_get_job_mode
, offsetof(Unit
, on_failure_job_mode
), SD_BUS_VTABLE_PROPERTY_CONST
),
926 SD_BUS_PROPERTY("IgnoreOnIsolate", "b", bus_property_get_bool
, offsetof(Unit
, ignore_on_isolate
), SD_BUS_VTABLE_PROPERTY_CONST
),
927 SD_BUS_PROPERTY("NeedDaemonReload", "b", property_get_need_daemon_reload
, 0, 0),
928 SD_BUS_PROPERTY("Markers", "as", property_get_markers
, offsetof(Unit
, markers
), 0),
929 SD_BUS_PROPERTY("JobTimeoutUSec", "t", bus_property_get_usec
, offsetof(Unit
, job_timeout
), SD_BUS_VTABLE_PROPERTY_CONST
),
930 SD_BUS_PROPERTY("JobRunningTimeoutUSec", "t", bus_property_get_usec
, offsetof(Unit
, job_running_timeout
), SD_BUS_VTABLE_PROPERTY_CONST
),
931 SD_BUS_PROPERTY("JobTimeoutAction", "s", bus_property_get_emergency_action
, offsetof(Unit
, job_timeout_action
), SD_BUS_VTABLE_PROPERTY_CONST
),
932 SD_BUS_PROPERTY("JobTimeoutRebootArgument", "s", NULL
, offsetof(Unit
, job_timeout_reboot_arg
), SD_BUS_VTABLE_PROPERTY_CONST
),
933 SD_BUS_PROPERTY("ConditionResult", "b", bus_property_get_bool
, offsetof(Unit
, condition_result
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
934 SD_BUS_PROPERTY("AssertResult", "b", bus_property_get_bool
, offsetof(Unit
, assert_result
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
935 BUS_PROPERTY_DUAL_TIMESTAMP("ConditionTimestamp", offsetof(Unit
, condition_timestamp
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
936 BUS_PROPERTY_DUAL_TIMESTAMP("AssertTimestamp", offsetof(Unit
, assert_timestamp
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
937 SD_BUS_PROPERTY("Conditions", "a(sbbsi)", property_get_conditions
, offsetof(Unit
, conditions
), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION
),
938 SD_BUS_PROPERTY("Asserts", "a(sbbsi)", property_get_conditions
, offsetof(Unit
, asserts
), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION
),
939 SD_BUS_PROPERTY("LoadError", "(ss)", property_get_load_error
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
940 SD_BUS_PROPERTY("Transient", "b", bus_property_get_bool
, offsetof(Unit
, transient
), SD_BUS_VTABLE_PROPERTY_CONST
),
941 SD_BUS_PROPERTY("Perpetual", "b", bus_property_get_bool
, offsetof(Unit
, perpetual
), SD_BUS_VTABLE_PROPERTY_CONST
),
942 SD_BUS_PROPERTY("StartLimitIntervalUSec", "t", bus_property_get_usec
, offsetof(Unit
, start_ratelimit
.interval
), SD_BUS_VTABLE_PROPERTY_CONST
),
943 SD_BUS_PROPERTY("StartLimitBurst", "u", bus_property_get_unsigned
, offsetof(Unit
, start_ratelimit
.burst
), SD_BUS_VTABLE_PROPERTY_CONST
),
944 SD_BUS_PROPERTY("StartLimitAction", "s", bus_property_get_emergency_action
, offsetof(Unit
, start_limit_action
), SD_BUS_VTABLE_PROPERTY_CONST
),
945 SD_BUS_PROPERTY("FailureAction", "s", bus_property_get_emergency_action
, offsetof(Unit
, failure_action
), SD_BUS_VTABLE_PROPERTY_CONST
),
946 SD_BUS_PROPERTY("FailureActionExitStatus", "i", bus_property_get_int
, offsetof(Unit
, failure_action_exit_status
), SD_BUS_VTABLE_PROPERTY_CONST
),
947 SD_BUS_PROPERTY("SuccessAction", "s", bus_property_get_emergency_action
, offsetof(Unit
, success_action
), SD_BUS_VTABLE_PROPERTY_CONST
),
948 SD_BUS_PROPERTY("SuccessActionExitStatus", "i", bus_property_get_int
, offsetof(Unit
, success_action_exit_status
), SD_BUS_VTABLE_PROPERTY_CONST
),
949 SD_BUS_PROPERTY("RebootArgument", "s", NULL
, offsetof(Unit
, reboot_arg
), SD_BUS_VTABLE_PROPERTY_CONST
),
950 SD_BUS_PROPERTY("InvocationID", "ay", bus_property_get_id128
, offsetof(Unit
, invocation_id
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
951 SD_BUS_PROPERTY("CollectMode", "s", property_get_collect_mode
, offsetof(Unit
, collect_mode
), SD_BUS_VTABLE_PROPERTY_CONST
),
952 SD_BUS_PROPERTY("Refs", "as", property_get_refs
, 0, 0),
953 SD_BUS_PROPERTY("ActivationDetails", "a(ss)", bus_property_get_activation_details
, offsetof(Unit
, activation_details
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
955 SD_BUS_METHOD_WITH_ARGS("Start",
956 SD_BUS_ARGS("s", mode
),
957 SD_BUS_RESULT("o", job
),
958 bus_unit_method_start
,
959 SD_BUS_VTABLE_UNPRIVILEGED
),
960 SD_BUS_METHOD_WITH_ARGS("Stop",
961 SD_BUS_ARGS("s", mode
),
962 SD_BUS_RESULT("o", job
),
963 bus_unit_method_stop
,
964 SD_BUS_VTABLE_UNPRIVILEGED
),
965 SD_BUS_METHOD_WITH_ARGS("Reload",
966 SD_BUS_ARGS("s", mode
),
967 SD_BUS_RESULT("o", job
),
968 bus_unit_method_reload
,
969 SD_BUS_VTABLE_UNPRIVILEGED
),
970 SD_BUS_METHOD_WITH_ARGS("Restart",
971 SD_BUS_ARGS("s", mode
),
972 SD_BUS_RESULT("o", job
),
973 bus_unit_method_restart
,
974 SD_BUS_VTABLE_UNPRIVILEGED
),
975 SD_BUS_METHOD_WITH_ARGS("TryRestart",
976 SD_BUS_ARGS("s", mode
),
977 SD_BUS_RESULT("o", job
),
978 bus_unit_method_try_restart
,
979 SD_BUS_VTABLE_UNPRIVILEGED
),
980 SD_BUS_METHOD_WITH_ARGS("ReloadOrRestart",
981 SD_BUS_ARGS("s", mode
),
982 SD_BUS_RESULT("o", job
),
983 bus_unit_method_reload_or_restart
,
984 SD_BUS_VTABLE_UNPRIVILEGED
),
985 SD_BUS_METHOD_WITH_ARGS("ReloadOrTryRestart",
986 SD_BUS_ARGS("s", mode
),
987 SD_BUS_RESULT("o", job
),
988 bus_unit_method_reload_or_try_restart
,
989 SD_BUS_VTABLE_UNPRIVILEGED
),
990 SD_BUS_METHOD_WITH_ARGS("EnqueueJob",
991 SD_BUS_ARGS("s", job_type
, "s", job_mode
),
992 SD_BUS_RESULT("u", job_id
, "o", job_path
, "s", unit_id
, "o", unit_path
, "s", job_type
, "a(uosos)", affected_jobs
),
993 bus_unit_method_enqueue_job
,
994 SD_BUS_VTABLE_UNPRIVILEGED
),
995 SD_BUS_METHOD_WITH_ARGS("Kill",
996 SD_BUS_ARGS("s", whom
, "i", signal
),
998 bus_unit_method_kill
,
999 SD_BUS_VTABLE_UNPRIVILEGED
),
1000 SD_BUS_METHOD_WITH_ARGS("QueueSignal",
1001 SD_BUS_ARGS("s", whom
, "i", signal
, "i", value
),
1003 bus_unit_method_kill
,
1004 SD_BUS_VTABLE_UNPRIVILEGED
),
1005 SD_BUS_METHOD("ResetFailed",
1008 bus_unit_method_reset_failed
,
1009 SD_BUS_VTABLE_UNPRIVILEGED
),
1010 SD_BUS_METHOD_WITH_ARGS("SetProperties",
1011 SD_BUS_ARGS("b", runtime
, "a(sv)", properties
),
1013 bus_unit_method_set_properties
,
1014 SD_BUS_VTABLE_UNPRIVILEGED
),
1015 SD_BUS_METHOD("Ref",
1018 bus_unit_method_ref
,
1019 SD_BUS_VTABLE_UNPRIVILEGED
),
1020 SD_BUS_METHOD("Unref",
1023 bus_unit_method_unref
,
1024 SD_BUS_VTABLE_UNPRIVILEGED
),
1025 SD_BUS_METHOD_WITH_ARGS("Clean",
1026 SD_BUS_ARGS("as", mask
),
1028 bus_unit_method_clean
,
1029 SD_BUS_VTABLE_UNPRIVILEGED
),
1030 SD_BUS_METHOD("Freeze",
1033 bus_unit_method_freeze
,
1034 SD_BUS_VTABLE_UNPRIVILEGED
),
1035 SD_BUS_METHOD("Thaw",
1038 bus_unit_method_thaw
,
1039 SD_BUS_VTABLE_UNPRIVILEGED
),
1041 /* For dependency types we don't support anymore always return an empty array */
1042 SD_BUS_PROPERTY("RequiresOverridable", "as", property_get_empty_strv
, 0, SD_BUS_VTABLE_HIDDEN
),
1043 SD_BUS_PROPERTY("RequisiteOverridable", "as", property_get_empty_strv
, 0, SD_BUS_VTABLE_HIDDEN
),
1044 SD_BUS_PROPERTY("RequiredByOverridable", "as", property_get_empty_strv
, 0, SD_BUS_VTABLE_HIDDEN
),
1045 SD_BUS_PROPERTY("RequisiteOfOverridable", "as", property_get_empty_strv
, 0, SD_BUS_VTABLE_HIDDEN
),
1046 /* Obsolete alias names */
1047 SD_BUS_PROPERTY("StartLimitInterval", "t", bus_property_get_usec
, offsetof(Unit
, start_ratelimit
.interval
), SD_BUS_VTABLE_PROPERTY_CONST
|SD_BUS_VTABLE_HIDDEN
),
1048 SD_BUS_PROPERTY("StartLimitIntervalSec", "t", bus_property_get_usec
, offsetof(Unit
, start_ratelimit
.interval
), SD_BUS_VTABLE_PROPERTY_CONST
|SD_BUS_VTABLE_HIDDEN
),
1053 static int property_get_slice(
1056 const char *interface
,
1057 const char *property
,
1058 sd_bus_message
*reply
,
1060 sd_bus_error
*error
) {
1062 Unit
*u
= ASSERT_PTR(userdata
);
1067 return sd_bus_message_append(reply
, "s", unit_slice_name(u
));
1070 static int property_get_current_memory(
1073 const char *interface
,
1074 const char *property
,
1075 sd_bus_message
*reply
,
1077 sd_bus_error
*error
) {
1079 uint64_t sz
= UINT64_MAX
;
1080 Unit
*u
= ASSERT_PTR(userdata
);
1086 r
= unit_get_memory_current(u
, &sz
);
1087 if (r
< 0 && r
!= -ENODATA
)
1088 log_unit_warning_errno(u
, r
, "Failed to get memory.usage_in_bytes attribute: %m");
1090 return sd_bus_message_append(reply
, "t", sz
);
1093 static int property_get_available_memory(
1096 const char *interface
,
1097 const char *property
,
1098 sd_bus_message
*reply
,
1100 sd_bus_error
*error
) {
1102 uint64_t sz
= UINT64_MAX
;
1103 Unit
*u
= ASSERT_PTR(userdata
);
1109 r
= unit_get_memory_available(u
, &sz
);
1110 if (r
< 0 && r
!= -ENODATA
)
1111 log_unit_warning_errno(u
, r
, "Failed to get total available memory from cgroup: %m");
1113 return sd_bus_message_append(reply
, "t", sz
);
1116 static int property_get_current_tasks(
1119 const char *interface
,
1120 const char *property
,
1121 sd_bus_message
*reply
,
1123 sd_bus_error
*error
) {
1125 uint64_t cn
= UINT64_MAX
;
1126 Unit
*u
= ASSERT_PTR(userdata
);
1132 r
= unit_get_tasks_current(u
, &cn
);
1133 if (r
< 0 && r
!= -ENODATA
)
1134 log_unit_warning_errno(u
, r
, "Failed to get pids.current attribute: %m");
1136 return sd_bus_message_append(reply
, "t", cn
);
1139 static int property_get_cpu_usage(
1142 const char *interface
,
1143 const char *property
,
1144 sd_bus_message
*reply
,
1146 sd_bus_error
*error
) {
1148 nsec_t ns
= NSEC_INFINITY
;
1149 Unit
*u
= ASSERT_PTR(userdata
);
1155 r
= unit_get_cpu_usage(u
, &ns
);
1156 if (r
< 0 && r
!= -ENODATA
)
1157 log_unit_warning_errno(u
, r
, "Failed to get cpuacct.usage attribute: %m");
1159 return sd_bus_message_append(reply
, "t", ns
);
1162 static int property_get_cpuset_cpus(
1165 const char *interface
,
1166 const char *property
,
1167 sd_bus_message
*reply
,
1169 sd_bus_error
*error
) {
1171 Unit
*u
= ASSERT_PTR(userdata
);
1172 _cleanup_(cpu_set_reset
) CPUSet cpus
= {};
1173 _cleanup_free_
uint8_t *array
= NULL
;
1179 (void) unit_get_cpuset(u
, &cpus
, "cpuset.cpus.effective");
1180 (void) cpu_set_to_dbus(&cpus
, &array
, &allocated
);
1181 return sd_bus_message_append_array(reply
, 'y', array
, allocated
);
1184 static int property_get_cpuset_mems(
1187 const char *interface
,
1188 const char *property
,
1189 sd_bus_message
*reply
,
1191 sd_bus_error
*error
) {
1193 Unit
*u
= ASSERT_PTR(userdata
);
1194 _cleanup_(cpu_set_reset
) CPUSet mems
= {};
1195 _cleanup_free_
uint8_t *array
= NULL
;
1201 (void) unit_get_cpuset(u
, &mems
, "cpuset.mems.effective");
1202 (void) cpu_set_to_dbus(&mems
, &array
, &allocated
);
1203 return sd_bus_message_append_array(reply
, 'y', array
, allocated
);
1206 static int property_get_cgroup(
1209 const char *interface
,
1210 const char *property
,
1211 sd_bus_message
*reply
,
1213 sd_bus_error
*error
) {
1215 Unit
*u
= ASSERT_PTR(userdata
);
1216 const char *t
= NULL
;
1221 /* Three cases: a) u->cgroup_path is NULL, in which case the
1222 * unit has no control group, which we report as the empty
1223 * string. b) u->cgroup_path is the empty string, which
1224 * indicates the root cgroup, which we report as "/". c) all
1225 * other cases we report as-is. */
1228 t
= empty_to_root(u
->cgroup_path
);
1230 return sd_bus_message_append(reply
, "s", t
);
1233 static int append_process(sd_bus_message
*reply
, const char *p
, pid_t pid
, Set
*pids
) {
1234 _cleanup_free_
char *buf
= NULL
, *cmdline
= NULL
;
1240 r
= set_put(pids
, PID_TO_PTR(pid
));
1241 if (IN_SET(r
, 0, -EEXIST
))
1247 r
= cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER
, pid
, &buf
);
1256 (void) get_process_cmdline(pid
, SIZE_MAX
,
1257 PROCESS_CMDLINE_COMM_FALLBACK
| PROCESS_CMDLINE_QUOTE
,
1260 return sd_bus_message_append(reply
,
1267 static int append_cgroup(sd_bus_message
*reply
, const char *p
, Set
*pids
) {
1268 _cleanup_closedir_
DIR *d
= NULL
;
1269 _cleanup_fclose_
FILE *f
= NULL
;
1275 r
= cg_enumerate_processes(SYSTEMD_CGROUP_CONTROLLER
, p
, &f
);
1284 /* libvirt / qemu uses threaded mode and cgroup.procs cannot be read at the lower levels.
1285 * From https://docs.kernel.org/admin-guide/cgroup-v2.html#threads,
1286 * “cgroup.procs” in a threaded domain cgroup contains the PIDs of all processes in
1287 * the subtree and is not readable in the subtree proper. */
1288 r
= cg_read_pid(f
, &pid
);
1289 if (IN_SET(r
, 0, -EOPNOTSUPP
))
1294 if (is_kernel_thread(pid
) > 0)
1297 r
= append_process(reply
, p
, pid
, pids
);
1302 r
= cg_enumerate_subgroups(SYSTEMD_CGROUP_CONTROLLER
, p
, &d
);
1309 _cleanup_free_
char *g
= NULL
, *j
= NULL
;
1311 r
= cg_read_subgroup(d
, &g
);
1317 j
= path_join(empty_to_root(p
), g
);
1321 r
= append_cgroup(reply
, j
, pids
);
1329 int bus_unit_method_get_processes(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
1330 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*reply
= NULL
;
1331 _cleanup_set_free_ Set
*pids
= NULL
;
1338 r
= mac_selinux_unit_access_check(u
, message
, "status", error
);
1342 pids
= set_new(NULL
);
1346 r
= sd_bus_message_new_method_return(message
, &reply
);
1350 r
= sd_bus_message_open_container(reply
, 'a', "(sus)");
1354 if (u
->cgroup_path
) {
1355 r
= append_cgroup(reply
, u
->cgroup_path
, pids
);
1360 /* The main and control pids might live outside of the cgroup, hence fetch them separately */
1361 pid
= unit_main_pid(u
);
1363 r
= append_process(reply
, NULL
, pid
, pids
);
1368 pid
= unit_control_pid(u
);
1370 r
= append_process(reply
, NULL
, pid
, pids
);
1375 r
= sd_bus_message_close_container(reply
);
1379 return sd_bus_send(NULL
, reply
, NULL
);
1382 static int property_get_ip_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_IP_ACCOUNTING_METRIC_MAX
] = {
1392 [CGROUP_IP_INGRESS_BYTES
] = "IPIngressBytes",
1393 [CGROUP_IP_EGRESS_BYTES
] = "IPEgressBytes",
1394 [CGROUP_IP_INGRESS_PACKETS
] = "IPIngressPackets",
1395 [CGROUP_IP_EGRESS_PACKETS
] = "IPEgressPackets",
1398 uint64_t value
= UINT64_MAX
;
1399 Unit
*u
= ASSERT_PTR(userdata
);
1406 assert_se((metric
= string_table_lookup(table
, ELEMENTSOF(table
), property
)) >= 0);
1407 (void) unit_get_ip_accounting(u
, metric
, &value
);
1408 return sd_bus_message_append(reply
, "t", value
);
1411 static int property_get_io_counter(
1414 const char *interface
,
1415 const char *property
,
1416 sd_bus_message
*reply
,
1418 sd_bus_error
*error
) {
1420 static const char *const table
[_CGROUP_IO_ACCOUNTING_METRIC_MAX
] = {
1421 [CGROUP_IO_READ_BYTES
] = "IOReadBytes",
1422 [CGROUP_IO_WRITE_BYTES
] = "IOWriteBytes",
1423 [CGROUP_IO_READ_OPERATIONS
] = "IOReadOperations",
1424 [CGROUP_IO_WRITE_OPERATIONS
] = "IOWriteOperations",
1427 uint64_t value
= UINT64_MAX
;
1428 Unit
*u
= ASSERT_PTR(userdata
);
1435 assert_se((metric
= string_table_lookup(table
, ELEMENTSOF(table
), property
)) >= 0);
1436 (void) unit_get_io_accounting(u
, metric
, false, &value
);
1437 return sd_bus_message_append(reply
, "t", value
);
1440 int bus_unit_method_attach_processes(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
1442 _cleanup_(sd_bus_creds_unrefp
) sd_bus_creds
*creds
= NULL
;
1443 _cleanup_set_free_ Set
*pids
= NULL
;
1450 /* This migrates the processes with the specified PIDs into the cgroup of this unit, optionally below a
1451 * specified cgroup path. Obviously this only works for units that actually maintain a cgroup
1452 * representation. If a process is already in the cgroup no operation is executed – in this case the specified
1453 * subcgroup path has no effect! */
1455 r
= mac_selinux_unit_access_check(u
, message
, "start", error
);
1459 r
= sd_bus_message_read(message
, "s", &path
);
1463 path
= empty_to_null(path
);
1465 if (!path_is_absolute(path
))
1466 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Control group path is not absolute: %s", path
);
1468 if (!path_is_normalized(path
))
1469 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Control group path is not normalized: %s", path
);
1472 if (!unit_cgroup_delegate(u
))
1473 return sd_bus_error_set(error
, SD_BUS_ERROR_INVALID_ARGS
, "Process migration not available on non-delegated units.");
1475 if (UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(u
)))
1476 return sd_bus_error_set(error
, SD_BUS_ERROR_INVALID_ARGS
, "Unit is not active, refusing.");
1478 r
= sd_bus_query_sender_creds(message
, SD_BUS_CREDS_EUID
|SD_BUS_CREDS_PID
, &creds
);
1482 r
= sd_bus_message_enter_container(message
, 'a', "u");
1486 uid_t process_uid
, sender_uid
;
1490 r
= sd_bus_message_read(message
, "u", &upid
);
1497 r
= sd_bus_creds_get_pid(creds
, &pid
);
1503 /* Filter out duplicates */
1504 if (set_contains(pids
, PID_TO_PTR(pid
)))
1507 /* Check if this process is suitable for attaching to this unit */
1508 r
= unit_pid_attachable(u
, pid
, error
);
1512 /* Let's query the sender's UID, so that we can make our security decisions */
1513 r
= sd_bus_creds_get_euid(creds
, &sender_uid
);
1517 /* Let's validate security: if the sender is root, then all is OK. If the sender is any other unit,
1518 * then the process' UID and the target unit's UID have to match the sender's UID */
1519 if (sender_uid
!= 0 && sender_uid
!= getuid()) {
1520 r
= get_process_uid(pid
, &process_uid
);
1522 return sd_bus_error_set_errnof(error
, r
, "Failed to retrieve process UID: %m");
1524 if (process_uid
!= sender_uid
)
1525 return sd_bus_error_setf(error
, SD_BUS_ERROR_ACCESS_DENIED
, "Process " PID_FMT
" not owned by client's UID. Refusing.", pid
);
1526 if (process_uid
!= u
->ref_uid
)
1527 return sd_bus_error_setf(error
, SD_BUS_ERROR_ACCESS_DENIED
, "Process " PID_FMT
" not owned by target unit's UID. Refusing.", pid
);
1531 pids
= set_new(NULL
);
1536 r
= set_put(pids
, PID_TO_PTR(pid
));
1541 r
= sd_bus_message_exit_container(message
);
1545 r
= unit_attach_pids_to_cgroup(u
, pids
, path
);
1547 return sd_bus_error_set_errnof(error
, r
, "Failed to attach processes to control group: %m");
1549 return sd_bus_reply_method_return(message
, NULL
);
1552 const sd_bus_vtable bus_unit_cgroup_vtable
[] = {
1553 SD_BUS_VTABLE_START(0),
1554 SD_BUS_PROPERTY("Slice", "s", property_get_slice
, 0, 0),
1555 SD_BUS_PROPERTY("ControlGroup", "s", property_get_cgroup
, 0, 0),
1556 SD_BUS_PROPERTY("ControlGroupId", "t", NULL
, offsetof(Unit
, cgroup_id
), 0),
1557 SD_BUS_PROPERTY("MemoryCurrent", "t", property_get_current_memory
, 0, 0),
1558 SD_BUS_PROPERTY("MemoryAvailable", "t", property_get_available_memory
, 0, 0),
1559 SD_BUS_PROPERTY("CPUUsageNSec", "t", property_get_cpu_usage
, 0, 0),
1560 SD_BUS_PROPERTY("EffectiveCPUs", "ay", property_get_cpuset_cpus
, 0, 0),
1561 SD_BUS_PROPERTY("EffectiveMemoryNodes", "ay", property_get_cpuset_mems
, 0, 0),
1562 SD_BUS_PROPERTY("TasksCurrent", "t", property_get_current_tasks
, 0, 0),
1563 SD_BUS_PROPERTY("IPIngressBytes", "t", property_get_ip_counter
, 0, 0),
1564 SD_BUS_PROPERTY("IPIngressPackets", "t", property_get_ip_counter
, 0, 0),
1565 SD_BUS_PROPERTY("IPEgressBytes", "t", property_get_ip_counter
, 0, 0),
1566 SD_BUS_PROPERTY("IPEgressPackets", "t", property_get_ip_counter
, 0, 0),
1567 SD_BUS_PROPERTY("IOReadBytes", "t", property_get_io_counter
, 0, 0),
1568 SD_BUS_PROPERTY("IOReadOperations", "t", property_get_io_counter
, 0, 0),
1569 SD_BUS_PROPERTY("IOWriteBytes", "t", property_get_io_counter
, 0, 0),
1570 SD_BUS_PROPERTY("IOWriteOperations", "t", property_get_io_counter
, 0, 0),
1572 SD_BUS_METHOD_WITH_ARGS("GetProcesses",
1574 SD_BUS_ARGS("a(sus)", processes
),
1575 bus_unit_method_get_processes
,
1576 SD_BUS_VTABLE_UNPRIVILEGED
),
1578 SD_BUS_METHOD_WITH_ARGS("AttachProcesses",
1579 SD_BUS_ARGS("s", subcgroup
, "au", pids
),
1581 bus_unit_method_attach_processes
,
1582 SD_BUS_VTABLE_UNPRIVILEGED
),
1587 static int send_new_signal(sd_bus
*bus
, void *userdata
) {
1588 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*m
= NULL
;
1589 _cleanup_free_
char *p
= NULL
;
1590 Unit
*u
= ASSERT_PTR(userdata
);
1595 p
= unit_dbus_path(u
);
1599 r
= sd_bus_message_new_signal(
1602 "/org/freedesktop/systemd1",
1603 "org.freedesktop.systemd1.Manager",
1608 r
= sd_bus_message_append(m
, "so", u
->id
, p
);
1612 return sd_bus_send(bus
, m
, NULL
);
1615 static int send_changed_signal(sd_bus
*bus
, void *userdata
) {
1616 _cleanup_free_
char *p
= NULL
;
1617 Unit
*u
= ASSERT_PTR(userdata
);
1622 p
= unit_dbus_path(u
);
1626 /* Send a properties changed signal. First for the specific
1627 * type, then for the generic unit. The clients may rely on
1628 * this order to get atomic behavior if needed. */
1630 r
= sd_bus_emit_properties_changed_strv(
1632 unit_dbus_interface_from_type(u
->type
),
1637 return sd_bus_emit_properties_changed_strv(
1639 "org.freedesktop.systemd1.Unit",
1643 void bus_unit_send_change_signal(Unit
*u
) {
1647 if (u
->in_dbus_queue
) {
1648 LIST_REMOVE(dbus_queue
, u
->manager
->dbus_unit_queue
, u
);
1649 u
->in_dbus_queue
= false;
1655 r
= bus_foreach_bus(u
->manager
, u
->bus_track
, u
->sent_dbus_new_signal
? send_changed_signal
: send_new_signal
, u
);
1657 log_unit_debug_errno(u
, r
, "Failed to send unit change signal for %s: %m", u
->id
);
1659 u
->sent_dbus_new_signal
= true;
1662 void bus_unit_send_pending_change_signal(Unit
*u
, bool including_new
) {
1664 /* Sends out any pending change signals, but only if they really are pending. This call is used when we are
1665 * about to change state in order to force out a PropertiesChanged signal beforehand if there was one pending
1666 * so that clients can follow the full state transition */
1668 if (!u
->in_dbus_queue
) /* If not enqueued, don't bother */
1671 if (!u
->sent_dbus_new_signal
&& !including_new
) /* If the unit was never announced, don't bother, it's fine if
1672 * the unit appears in the new state right-away (except if the
1673 * caller explicitly asked us to send it anyway) */
1676 if (MANAGER_IS_RELOADING(u
->manager
)) /* Don't generate unnecessary PropertiesChanged signals for the same unit
1677 * when we are reloading. */
1680 bus_unit_send_change_signal(u
);
1683 int bus_unit_send_pending_freezer_message(Unit
*u
, bool cancelled
) {
1684 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*reply
= NULL
;
1689 if (!u
->pending_freezer_invocation
)
1693 r
= sd_bus_message_new_method_error(
1694 u
->pending_freezer_invocation
,
1696 &SD_BUS_ERROR_MAKE_CONST(
1697 BUS_ERROR_FREEZE_CANCELLED
, "Freeze operation aborted"));
1699 r
= sd_bus_message_new_method_return(u
->pending_freezer_invocation
, &reply
);
1703 r
= sd_bus_send(NULL
, reply
, NULL
);
1705 log_warning_errno(r
, "Failed to send queued message, ignoring: %m");
1707 u
->pending_freezer_invocation
= sd_bus_message_unref(u
->pending_freezer_invocation
);
1712 static int send_removed_signal(sd_bus
*bus
, void *userdata
) {
1713 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*m
= NULL
;
1714 _cleanup_free_
char *p
= NULL
;
1715 Unit
*u
= ASSERT_PTR(userdata
);
1720 p
= unit_dbus_path(u
);
1724 r
= sd_bus_message_new_signal(
1727 "/org/freedesktop/systemd1",
1728 "org.freedesktop.systemd1.Manager",
1733 r
= sd_bus_message_append(m
, "so", u
->id
, p
);
1737 return sd_bus_send(bus
, m
, NULL
);
1740 void bus_unit_send_removed_signal(Unit
*u
) {
1744 if (!u
->sent_dbus_new_signal
|| u
->in_dbus_queue
)
1745 bus_unit_send_change_signal(u
);
1750 r
= bus_foreach_bus(u
->manager
, u
->bus_track
, send_removed_signal
, u
);
1752 log_unit_debug_errno(u
, r
, "Failed to send unit remove signal for %s: %m", u
->id
);
1755 int bus_unit_queue_job_one(
1756 sd_bus_message
*message
,
1760 BusUnitQueueFlags flags
,
1761 sd_bus_message
*reply
,
1762 sd_bus_error
*error
) {
1764 _cleanup_set_free_ Set
*affected
= NULL
;
1765 _cleanup_free_
char *job_path
= NULL
, *unit_path
= NULL
;
1769 if (FLAGS_SET(flags
, BUS_UNIT_QUEUE_VERBOSE_REPLY
)) {
1770 affected
= set_new(NULL
);
1775 r
= manager_add_job(u
->manager
, type
, u
, mode
, affected
, error
, &j
);
1779 r
= bus_job_track_sender(j
, message
);
1783 /* Before we send the method reply, force out the announcement JobNew for this job */
1784 bus_job_send_pending_change_signal(j
, true);
1786 job_path
= job_dbus_path(j
);
1790 /* The classic response is just a job object path */
1791 if (!FLAGS_SET(flags
, BUS_UNIT_QUEUE_VERBOSE_REPLY
))
1792 return sd_bus_message_append(reply
, "o", job_path
);
1794 /* In verbose mode respond with the anchor job plus everything that has been affected */
1796 unit_path
= unit_dbus_path(j
->unit
);
1800 r
= sd_bus_message_append(reply
, "uosos",
1802 j
->unit
->id
, unit_path
,
1803 job_type_to_string(j
->type
));
1807 r
= sd_bus_message_open_container(reply
, 'a', "(uosos)");
1811 SET_FOREACH(a
, affected
) {
1815 /* Free paths from previous iteration */
1816 job_path
= mfree(job_path
);
1817 unit_path
= mfree(unit_path
);
1819 job_path
= job_dbus_path(a
);
1823 unit_path
= unit_dbus_path(a
->unit
);
1827 r
= sd_bus_message_append(reply
, "(uosos)",
1829 a
->unit
->id
, unit_path
,
1830 job_type_to_string(a
->type
));
1835 return sd_bus_message_close_container(reply
);
1838 int bus_unit_queue_job(
1839 sd_bus_message
*message
,
1843 BusUnitQueueFlags flags
,
1844 sd_bus_error
*error
) {
1846 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*reply
= NULL
;
1851 assert(type
>= 0 && type
< _JOB_TYPE_MAX
);
1852 assert(mode
>= 0 && mode
< _JOB_MODE_MAX
);
1854 r
= mac_selinux_unit_access_check(
1856 job_type_to_access_method(type
),
1861 if (FLAGS_SET(flags
, BUS_UNIT_QUEUE_RELOAD_IF_POSSIBLE
) && unit_can_reload(u
)) {
1862 if (type
== JOB_RESTART
)
1863 type
= JOB_RELOAD_OR_START
;
1864 else if (type
== JOB_TRY_RESTART
)
1865 type
= JOB_TRY_RELOAD
;
1868 if (type
== JOB_STOP
&&
1869 IN_SET(u
->load_state
, UNIT_NOT_FOUND
, UNIT_ERROR
, UNIT_BAD_SETTING
) &&
1870 unit_active_state(u
) == UNIT_INACTIVE
)
1871 return sd_bus_error_setf(error
, BUS_ERROR_NO_SUCH_UNIT
, "Unit %s not loaded.", u
->id
);
1873 if ((type
== JOB_START
&& u
->refuse_manual_start
) ||
1874 (type
== JOB_STOP
&& u
->refuse_manual_stop
) ||
1875 (IN_SET(type
, JOB_RESTART
, JOB_TRY_RESTART
) && (u
->refuse_manual_start
|| u
->refuse_manual_stop
)) ||
1876 (type
== JOB_RELOAD_OR_START
&& job_type_collapse(type
, u
) == JOB_START
&& u
->refuse_manual_start
))
1877 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
);
1879 r
= sd_bus_message_new_method_return(message
, &reply
);
1883 r
= bus_unit_queue_job_one(message
, u
, type
, mode
, flags
, reply
, error
);
1887 return sd_bus_send(NULL
, reply
, NULL
);
1890 static int bus_unit_set_live_property(
1893 sd_bus_message
*message
,
1894 UnitWriteFlags flags
,
1895 sd_bus_error
*error
) {
1903 /* Handles setting properties both "live" (i.e. at any time during runtime), and during creation (for
1904 * transient units that are being created). */
1906 if (streq(name
, "Description")) {
1909 r
= sd_bus_message_read(message
, "s", &d
);
1913 if (!UNIT_WRITE_FLAGS_NOOP(flags
)) {
1914 r
= unit_set_description(u
, d
);
1918 unit_write_settingf(u
, flags
|UNIT_ESCAPE_SPECIFIERS
, name
, "Description=%s", d
);
1924 /* A setting that only applies to active units. We don't actually write this to /run, this state is
1925 * managed internally. "+foo" sets flag foo, "-foo" unsets flag foo, just "foo" resets flags to
1926 * foo. The last type cannot be mixed with "+" or "-". */
1928 if (streq(name
, "Markers")) {
1929 unsigned settings
= 0, mask
= 0;
1930 bool some_plus_minus
= false, some_absolute
= false;
1932 r
= sd_bus_message_enter_container(message
, 'a', "s");
1940 r
= sd_bus_message_read(message
, "s", &word
);
1946 if (IN_SET(word
[0], '+', '-')) {
1949 some_plus_minus
= true;
1952 some_absolute
= true;
1955 UnitMarker m
= unit_marker_from_string(word
);
1957 return sd_bus_error_setf(error
, BUS_ERROR_BAD_UNIT_SETTING
,
1958 "Unknown marker \"%s\".", word
);
1960 SET_FLAG(settings
, 1u << m
, b
);
1961 SET_FLAG(mask
, 1u << m
, true);
1964 r
= sd_bus_message_exit_container(message
);
1968 if (some_plus_minus
&& some_absolute
)
1969 return sd_bus_error_set(error
, BUS_ERROR_BAD_UNIT_SETTING
, "Bad marker syntax.");
1971 if (!UNIT_WRITE_FLAGS_NOOP(flags
)) {
1973 u
->markers
= settings
;
1975 u
->markers
= settings
| (u
->markers
& ~mask
);
1984 static int bus_set_transient_emergency_action(
1988 sd_bus_message
*message
,
1989 UnitWriteFlags flags
,
1990 sd_bus_error
*error
) {
1998 r
= sd_bus_message_read(message
, "s", &s
);
2002 r
= parse_emergency_action(s
, u
->manager
->runtime_scope
, &v
);
2004 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
,
2005 r
== -EOPNOTSUPP
? "%s setting invalid for manager type: %s"
2006 : "Invalid %s setting: %s",
2009 if (!UNIT_WRITE_FLAGS_NOOP(flags
)) {
2011 unit_write_settingf(u
, flags
, name
,
2018 static int bus_set_transient_exit_status(
2022 sd_bus_message
*message
,
2023 UnitWriteFlags flags
,
2024 sd_bus_error
*error
) {
2031 r
= sd_bus_message_read(message
, "i", &k
);
2036 return sd_bus_error_set(error
, SD_BUS_ERROR_INVALID_ARGS
, "Exit status must be in range 0…255 or negative.");
2038 if (!UNIT_WRITE_FLAGS_NOOP(flags
)) {
2039 *p
= k
< 0 ? -1 : k
;
2042 unit_write_settingf(u
, flags
, name
, "%s=", name
);
2044 unit_write_settingf(u
, flags
, name
, "%s=%i", name
, k
);
2050 static BUS_DEFINE_SET_TRANSIENT_PARSE(collect_mode
, CollectMode
, collect_mode_from_string
);
2051 static BUS_DEFINE_SET_TRANSIENT_PARSE(job_mode
, JobMode
, job_mode_from_string
);
2053 static int bus_set_transient_conditions(
2058 sd_bus_message
*message
,
2059 UnitWriteFlags flags
,
2060 sd_bus_error
*error
) {
2062 const char *type_name
, *param
;
2063 int trigger
, negate
, r
;
2068 r
= sd_bus_message_enter_container(message
, 'a', "(sbbs)");
2072 while ((r
= sd_bus_message_read(message
, "(sbbs)", &type_name
, &trigger
, &negate
, ¶m
)) > 0) {
2075 t
= is_condition
? condition_type_from_string(type_name
) : assert_type_from_string(type_name
);
2077 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid condition type: %s", type_name
);
2080 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Condition parameter in %s is empty", type_name
);
2082 if (condition_takes_path(t
) && !path_is_absolute(param
))
2083 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Path in condition %s is not absolute: %s", type_name
, param
);
2085 if (!UNIT_WRITE_FLAGS_NOOP(flags
)) {
2088 c
= condition_new(t
, param
, trigger
, negate
);
2092 LIST_PREPEND(conditions
, *list
, c
);
2094 unit_write_settingf(u
, flags
|UNIT_ESCAPE_SPECIFIERS
, name
,
2095 "%s=%s%s%s", type_name
,
2096 trigger
? "|" : "", negate
? "!" : "", param
);
2104 r
= sd_bus_message_exit_container(message
);
2108 if (!UNIT_WRITE_FLAGS_NOOP(flags
) && empty
) {
2109 *list
= condition_free_list(*list
);
2110 unit_write_settingf(u
, flags
, name
, "%sNull=", is_condition
? "Condition" : "Assert");
2116 static int bus_unit_set_transient_property(
2119 sd_bus_message
*message
,
2120 UnitWriteFlags flags
,
2121 sd_bus_error
*error
) {
2130 /* Handles settings when transient units are created. This settings cannot be altered anymore after
2131 * the unit has been created. */
2133 if (streq(name
, "SourcePath"))
2134 return bus_set_transient_path(u
, name
, &u
->source_path
, message
, flags
, error
);
2136 if (streq(name
, "StopWhenUnneeded"))
2137 return bus_set_transient_bool(u
, name
, &u
->stop_when_unneeded
, message
, flags
, error
);
2139 if (streq(name
, "RefuseManualStart"))
2140 return bus_set_transient_bool(u
, name
, &u
->refuse_manual_start
, message
, flags
, error
);
2142 if (streq(name
, "RefuseManualStop"))
2143 return bus_set_transient_bool(u
, name
, &u
->refuse_manual_stop
, message
, flags
, error
);
2145 if (streq(name
, "AllowIsolate"))
2146 return bus_set_transient_bool(u
, name
, &u
->allow_isolate
, message
, flags
, error
);
2148 if (streq(name
, "DefaultDependencies"))
2149 return bus_set_transient_bool(u
, name
, &u
->default_dependencies
, message
, flags
, error
);
2151 if (streq(name
, "OnSuccessJobMode"))
2152 return bus_set_transient_job_mode(u
, name
, &u
->on_success_job_mode
, message
, flags
, error
);
2154 if (streq(name
, "OnFailureJobMode"))
2155 return bus_set_transient_job_mode(u
, name
, &u
->on_failure_job_mode
, message
, flags
, error
);
2157 if (streq(name
, "IgnoreOnIsolate"))
2158 return bus_set_transient_bool(u
, name
, &u
->ignore_on_isolate
, message
, flags
, error
);
2160 if (streq(name
, "JobTimeoutUSec")) {
2161 r
= bus_set_transient_usec_fix_0(u
, name
, &u
->job_timeout
, message
, flags
, error
);
2162 if (r
>= 0 && !UNIT_WRITE_FLAGS_NOOP(flags
) && !u
->job_running_timeout_set
)
2163 u
->job_running_timeout
= u
->job_timeout
;
2166 if (streq(name
, "JobRunningTimeoutUSec")) {
2167 r
= bus_set_transient_usec_fix_0(u
, name
, &u
->job_running_timeout
, message
, flags
, error
);
2168 if (r
>= 0 && !UNIT_WRITE_FLAGS_NOOP(flags
))
2169 u
->job_running_timeout_set
= true;
2174 if (streq(name
, "JobTimeoutAction"))
2175 return bus_set_transient_emergency_action(u
, name
, &u
->job_timeout_action
, message
, flags
, error
);
2177 if (streq(name
, "JobTimeoutRebootArgument"))
2178 return bus_set_transient_string(u
, name
, &u
->job_timeout_reboot_arg
, message
, flags
, error
);
2180 if (streq(name
, "StartLimitIntervalUSec"))
2181 return bus_set_transient_usec(u
, name
, &u
->start_ratelimit
.interval
, message
, flags
, error
);
2183 if (streq(name
, "StartLimitBurst"))
2184 return bus_set_transient_unsigned(u
, name
, &u
->start_ratelimit
.burst
, message
, flags
, error
);
2186 if (streq(name
, "StartLimitAction"))
2187 return bus_set_transient_emergency_action(u
, name
, &u
->start_limit_action
, message
, flags
, error
);
2189 if (streq(name
, "FailureAction"))
2190 return bus_set_transient_emergency_action(u
, name
, &u
->failure_action
, message
, flags
, error
);
2192 if (streq(name
, "SuccessAction"))
2193 return bus_set_transient_emergency_action(u
, name
, &u
->success_action
, message
, flags
, error
);
2195 if (streq(name
, "FailureActionExitStatus"))
2196 return bus_set_transient_exit_status(u
, name
, &u
->failure_action_exit_status
, message
, flags
, error
);
2198 if (streq(name
, "SuccessActionExitStatus"))
2199 return bus_set_transient_exit_status(u
, name
, &u
->success_action_exit_status
, message
, flags
, error
);
2201 if (streq(name
, "RebootArgument"))
2202 return bus_set_transient_string(u
, name
, &u
->reboot_arg
, message
, flags
, error
);
2204 if (streq(name
, "CollectMode"))
2205 return bus_set_transient_collect_mode(u
, name
, &u
->collect_mode
, message
, flags
, error
);
2207 if (streq(name
, "Conditions"))
2208 return bus_set_transient_conditions(u
, name
, &u
->conditions
, true, message
, flags
, error
);
2210 if (streq(name
, "Asserts"))
2211 return bus_set_transient_conditions(u
, name
, &u
->asserts
, false, message
, flags
, error
);
2213 if (streq(name
, "Documentation")) {
2214 _cleanup_strv_free_
char **l
= NULL
;
2216 r
= sd_bus_message_read_strv(message
, &l
);
2221 if (!documentation_url_is_valid(*p
))
2222 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid URL in %s: %s", name
, *p
);
2224 if (!UNIT_WRITE_FLAGS_NOOP(flags
)) {
2225 if (strv_isempty(l
)) {
2226 u
->documentation
= strv_free(u
->documentation
);
2227 unit_write_settingf(u
, flags
, name
, "%s=", name
);
2229 strv_extend_strv(&u
->documentation
, l
, false);
2232 unit_write_settingf(u
, flags
, name
, "%s=%s", name
, *p
);
2238 } else if (streq(name
, "Slice")) {
2242 if (!UNIT_HAS_CGROUP_CONTEXT(u
))
2243 return sd_bus_error_set(error
, SD_BUS_ERROR_INVALID_ARGS
, "The slice property is only available for units with control groups.");
2244 if (u
->type
== UNIT_SLICE
)
2245 return sd_bus_error_set(error
, SD_BUS_ERROR_INVALID_ARGS
, "Slice may not be set for slice units.");
2246 if (unit_has_name(u
, SPECIAL_INIT_SCOPE
))
2247 return sd_bus_error_set(error
, SD_BUS_ERROR_INVALID_ARGS
, "Cannot set slice for init.scope");
2249 r
= sd_bus_message_read(message
, "s", &s
);
2253 if (!unit_name_is_valid(s
, UNIT_NAME_PLAIN
))
2254 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid unit name '%s'", s
);
2256 /* Note that we do not dispatch the load queue here yet, as we don't want our own transient unit to be
2257 * loaded while we are still setting it up. Or in other words, we use manager_load_unit_prepare()
2258 * instead of manager_load_unit() on purpose, here. */
2259 r
= manager_load_unit_prepare(u
->manager
, s
, NULL
, error
, &slice
);
2263 if (slice
->type
!= UNIT_SLICE
)
2264 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Unit name '%s' is not a slice", s
);
2266 if (!UNIT_WRITE_FLAGS_NOOP(flags
)) {
2267 r
= unit_set_slice(u
, slice
);
2271 unit_write_settingf(u
, flags
|UNIT_PRIVATE
, name
, "Slice=%s", s
);
2276 } else if (streq(name
, "RequiresMountsFor")) {
2277 _cleanup_strv_free_
char **l
= NULL
;
2279 r
= sd_bus_message_read_strv(message
, &l
);
2283 STRV_FOREACH(p
, l
) {
2286 if (!path_is_absolute(*p
))
2287 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Path specified in %s is not absolute: %s", name
, *p
);
2289 if (!path_is_valid(*p
))
2290 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Path specified in %s has invalid length: %s", name
, *p
);
2292 if (!path_is_normalized(*p
))
2293 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Path specified in %s is not normalized: %s", name
, *p
);
2295 if (!UNIT_WRITE_FLAGS_NOOP(flags
)) {
2296 r
= unit_require_mounts_for(u
, *p
, UNIT_DEPENDENCY_FILE
);
2298 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Failed to add required mount \"%s\": %m", *p
);
2300 unit_write_settingf(u
, flags
, name
, "%s=%s", name
, *p
);
2307 if (streq(name
, "RequiresOverridable"))
2308 d
= UNIT_REQUIRES
; /* redirect for obsolete unit dependency type */
2309 else if (streq(name
, "RequisiteOverridable"))
2310 d
= UNIT_REQUISITE
; /* same here */
2312 d
= unit_dependency_from_string(name
);
2329 UNIT_PROPAGATES_RELOAD_TO
,
2330 UNIT_RELOAD_PROPAGATED_FROM
,
2331 UNIT_PROPAGATES_STOP_TO
,
2332 UNIT_STOP_PROPAGATED_FROM
,
2333 UNIT_JOINS_NAMESPACE_OF
))
2334 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Dependency type %s may not be created transiently.", unit_dependency_to_string(d
));
2336 r
= sd_bus_message_enter_container(message
, 'a', "s");
2340 while ((r
= sd_bus_message_read(message
, "s", &other
)) > 0) {
2341 if (!unit_name_is_valid(other
, UNIT_NAME_PLAIN
|UNIT_NAME_INSTANCE
))
2342 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid unit name %s", other
);
2344 if (!UNIT_WRITE_FLAGS_NOOP(flags
)) {
2345 _cleanup_free_
char *label
= NULL
;
2347 r
= unit_add_dependency_by_name(u
, d
, other
, true, UNIT_DEPENDENCY_FILE
);
2351 label
= strjoin(name
, "-", other
);
2355 unit_write_settingf(u
, flags
, label
, "%s=%s", unit_dependency_to_string(d
), other
);
2362 r
= sd_bus_message_exit_container(message
);
2368 } else if (streq(name
, "AddRef")) {
2372 /* Why is this called "AddRef" rather than just "Ref", or "Reference"? There's already a "Ref()" method
2373 * on the Unit interface, and it's probably not a good idea to expose a property and a method on the
2374 * same interface (well, strictly speaking AddRef isn't exposed as full property, we just read it for
2375 * transient units, but still). And "References" and "ReferencedBy" is already used as unit reference
2376 * dependency type, hence let's not confuse things with that.
2378 * Note that we don't actually add the reference to the bus track. We do that only after the setup of
2379 * the transient unit is complete, so that setting this property multiple times in the same transient
2380 * unit creation call doesn't count as individual references. */
2382 r
= sd_bus_message_read(message
, "b", &b
);
2386 if (!UNIT_WRITE_FLAGS_NOOP(flags
))
2387 u
->bus_track_add
= b
;
2395 int bus_unit_set_properties(
2397 sd_bus_message
*message
,
2398 UnitWriteFlags flags
,
2400 sd_bus_error
*error
) {
2402 bool for_real
= false;
2409 /* We iterate through the array twice. First run just checks if all passed data is valid, second run
2410 * actually applies it. This implements transaction-like behaviour without actually providing full
2413 r
= sd_bus_message_enter_container(message
, 'a', "(sv)");
2421 r
= sd_bus_message_enter_container(message
, 'r', "sv");
2425 if (for_real
|| UNIT_WRITE_FLAGS_NOOP(flags
))
2428 /* Reached EOF. Let's try again, and this time for realz... */
2429 r
= sd_bus_message_rewind(message
, false);
2437 r
= sd_bus_message_read(message
, "s", &name
);
2441 r
= sd_bus_message_enter_container(message
, 'v', NULL
);
2445 /* If not for real, then mask out the two target flags */
2446 f
= for_real
? flags
: (flags
& ~(UNIT_RUNTIME
|UNIT_PERSISTENT
));
2448 if (UNIT_VTABLE(u
)->bus_set_property
)
2449 r
= UNIT_VTABLE(u
)->bus_set_property(u
, name
, message
, f
, error
);
2452 if (r
== 0 && u
->transient
&& u
->load_state
== UNIT_STUB
)
2453 r
= bus_unit_set_transient_property(u
, name
, message
, f
, error
);
2455 r
= bus_unit_set_live_property(u
, name
, message
, f
, error
);
2460 return sd_bus_error_setf(error
, SD_BUS_ERROR_PROPERTY_READ_ONLY
,
2461 "Cannot set property %s, or unknown property.", name
);
2463 r
= sd_bus_message_exit_container(message
);
2467 r
= sd_bus_message_exit_container(message
);
2474 r
= sd_bus_message_exit_container(message
);
2478 if (commit
&& n
> 0 && UNIT_VTABLE(u
)->bus_commit_properties
)
2479 UNIT_VTABLE(u
)->bus_commit_properties(u
);
2484 /* Pretty much any of the calls above can fail if the message is not formed properly
2485 * or if it has unexpected contents. Fill in a more informative error message here. */
2486 if (sd_bus_error_is_set(error
))
2488 return sd_bus_error_set_errnof(error
, r
,
2489 r
== -ENXIO
? "Failed to set unit properties: Unexpected message contents"
2490 : "Failed to set unit properties: %m");
2493 int bus_unit_validate_load_state(Unit
*u
, sd_bus_error
*error
) {
2496 /* Generates a pretty error if a unit isn't properly loaded. */
2498 switch (u
->load_state
) {
2503 case UNIT_NOT_FOUND
:
2504 return sd_bus_error_setf(error
, BUS_ERROR_NO_SUCH_UNIT
, "Unit %s not found.", u
->id
);
2506 case UNIT_BAD_SETTING
:
2507 return sd_bus_error_setf(error
, BUS_ERROR_BAD_UNIT_SETTING
, "Unit %s has a bad unit file setting.", u
->id
);
2509 case UNIT_ERROR
: /* Only show .load_error in UNIT_ERROR state */
2510 return sd_bus_error_set_errnof(error
, u
->load_error
,
2511 "Unit %s failed to load properly, please adjust/correct and reload service manager: %m", u
->id
);
2514 return sd_bus_error_setf(error
, BUS_ERROR_UNIT_MASKED
, "Unit %s is masked.", u
->id
);
2519 return sd_bus_error_setf(error
, BUS_ERROR_NO_SUCH_UNIT
, "Unexpected load state of unit %s", u
->id
);
2523 static int bus_unit_track_handler(sd_bus_track
*t
, void *userdata
) {
2524 Unit
*u
= ASSERT_PTR(userdata
);
2528 u
->bus_track
= sd_bus_track_unref(u
->bus_track
); /* make sure we aren't called again */
2530 /* If the client that tracks us disappeared, then there's reason to believe that the cgroup is empty now too,
2532 unit_add_to_cgroup_empty_queue(u
);
2534 /* Also add the unit to the GC queue, after all if the client left it might be time to GC this unit */
2535 unit_add_to_gc_queue(u
);
2540 static int bus_unit_allocate_bus_track(Unit
*u
) {
2548 r
= sd_bus_track_new(u
->manager
->api_bus
, &u
->bus_track
, bus_unit_track_handler
, u
);
2552 r
= sd_bus_track_set_recursive(u
->bus_track
, true);
2554 u
->bus_track
= sd_bus_track_unref(u
->bus_track
);
2561 int bus_unit_track_add_name(Unit
*u
, const char *name
) {
2566 r
= bus_unit_allocate_bus_track(u
);
2570 return sd_bus_track_add_name(u
->bus_track
, name
);
2573 int bus_unit_track_add_sender(Unit
*u
, sd_bus_message
*m
) {
2578 r
= bus_unit_allocate_bus_track(u
);
2582 return sd_bus_track_add_sender(u
->bus_track
, m
);
2585 int bus_unit_track_remove_sender(Unit
*u
, sd_bus_message
*m
) {
2588 /* If we haven't allocated the bus track object yet, then there's definitely no reference taken yet,
2589 * return an error */
2593 return sd_bus_track_remove_sender(u
->bus_track
, m
);