1 /* SPDX-License-Identifier: LGPL-2.1+ */
5 #include "alloc-util.h"
6 #include "bpf-firewall.h"
7 #include "bus-common-errors.h"
8 #include "cgroup-util.h"
11 #include "dbus-unit.h"
12 #include "dbus-util.h"
15 #include "locale-util.h"
17 #include "path-util.h"
18 #include "process-util.h"
19 #include "selinux-access.h"
20 #include "signal-util.h"
22 #include "string-util.h"
24 #include "user-util.h"
27 static bool unit_can_start_refuse_manual(Unit
*u
) {
28 return unit_can_start(u
) && !u
->refuse_manual_start
;
31 static bool unit_can_stop_refuse_manual(Unit
*u
) {
32 return unit_can_stop(u
) && !u
->refuse_manual_stop
;
35 static bool unit_can_isolate_refuse_manual(Unit
*u
) {
36 return unit_can_isolate(u
) && !u
->refuse_manual_start
;
39 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_collect_mode
, collect_mode
, CollectMode
);
40 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_load_state
, unit_load_state
, UnitLoadState
);
41 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_job_mode
, job_mode
, JobMode
);
42 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_emergency_action
, emergency_action
, EmergencyAction
);
43 static BUS_DEFINE_PROPERTY_GET(property_get_description
, "s", Unit
, unit_description
);
44 static BUS_DEFINE_PROPERTY_GET2(property_get_active_state
, "s", Unit
, unit_active_state
, unit_active_state_to_string
);
45 static BUS_DEFINE_PROPERTY_GET(property_get_sub_state
, "s", Unit
, unit_sub_state_to_string
);
46 static BUS_DEFINE_PROPERTY_GET2(property_get_unit_file_state
, "s", Unit
, unit_get_unit_file_state
, unit_file_state_to_string
);
47 static BUS_DEFINE_PROPERTY_GET(property_get_can_reload
, "b", Unit
, unit_can_reload
);
48 static BUS_DEFINE_PROPERTY_GET(property_get_can_start
, "b", Unit
, unit_can_start_refuse_manual
);
49 static BUS_DEFINE_PROPERTY_GET(property_get_can_stop
, "b", Unit
, unit_can_stop_refuse_manual
);
50 static BUS_DEFINE_PROPERTY_GET(property_get_can_isolate
, "b", Unit
, unit_can_isolate_refuse_manual
);
51 static BUS_DEFINE_PROPERTY_GET(property_get_need_daemon_reload
, "b", Unit
, unit_need_daemon_reload
);
52 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_empty_strv
, "as", 0);
54 static int property_get_names(
57 const char *interface
,
59 sd_bus_message
*reply
,
61 sd_bus_error
*error
) {
72 r
= sd_bus_message_open_container(reply
, 'a', "s");
76 SET_FOREACH(t
, *s
, i
) {
77 r
= sd_bus_message_append(reply
, "s", t
);
82 return sd_bus_message_close_container(reply
);
85 static int property_get_following(
88 const char *interface
,
90 sd_bus_message
*reply
,
92 sd_bus_error
*error
) {
94 Unit
*u
= userdata
, *f
;
100 f
= unit_following(u
);
101 return sd_bus_message_append(reply
, "s", f
? f
->id
: NULL
);
104 static int property_get_dependencies(
107 const char *interface
,
108 const char *property
,
109 sd_bus_message
*reply
,
111 sd_bus_error
*error
) {
113 Hashmap
**h
= userdata
;
123 r
= sd_bus_message_open_container(reply
, 'a', "s");
127 HASHMAP_FOREACH_KEY(v
, u
, *h
, j
) {
128 r
= sd_bus_message_append(reply
, "s", u
->id
);
133 return sd_bus_message_close_container(reply
);
136 static int property_get_requires_mounts_for(
139 const char *interface
,
140 const char *property
,
141 sd_bus_message
*reply
,
143 sd_bus_error
*error
) {
145 Hashmap
**h
= userdata
;
155 r
= sd_bus_message_open_container(reply
, 'a', "s");
159 HASHMAP_FOREACH_KEY(v
, p
, *h
, j
) {
160 r
= sd_bus_message_append(reply
, "s", p
);
165 return sd_bus_message_close_container(reply
);
168 static int property_get_unit_file_preset(
171 const char *interface
,
172 const char *property
,
173 sd_bus_message
*reply
,
175 sd_bus_error
*error
) {
184 r
= unit_get_unit_file_preset(u
);
186 return sd_bus_message_append(reply
, "s",
188 r
> 0 ? "enabled" : "disabled");
191 static int property_get_job(
194 const char *interface
,
195 const char *property
,
196 sd_bus_message
*reply
,
198 sd_bus_error
*error
) {
200 _cleanup_free_
char *p
= NULL
;
208 return sd_bus_message_append(reply
, "(uo)", 0, "/");
210 p
= job_dbus_path(*j
);
214 return sd_bus_message_append(reply
, "(uo)", (*j
)->id
, p
);
217 static int property_get_conditions(
220 const char *interface
,
221 const char *property
,
222 sd_bus_message
*reply
,
224 sd_bus_error
*error
) {
226 const char *(*to_string
)(ConditionType type
) = NULL
;
227 Condition
**list
= userdata
, *c
;
234 to_string
= streq(property
, "Asserts") ? assert_type_to_string
: condition_type_to_string
;
236 r
= sd_bus_message_open_container(reply
, 'a', "(sbbsi)");
240 LIST_FOREACH(conditions
, c
, *list
) {
244 c
->result
== CONDITION_UNTESTED
? 0 :
245 c
->result
== CONDITION_SUCCEEDED
? 1 : -1;
247 r
= sd_bus_message_append(reply
, "(sbbsi)",
249 c
->trigger
, c
->negate
,
250 c
->parameter
, tristate
);
256 return sd_bus_message_close_container(reply
);
259 static int property_get_load_error(
262 const char *interface
,
263 const char *property
,
264 sd_bus_message
*reply
,
266 sd_bus_error
*error
) {
268 _cleanup_(sd_bus_error_free
) sd_bus_error e
= SD_BUS_ERROR_NULL
;
276 r
= bus_unit_validate_load_state(u
, &e
);
278 return sd_bus_message_append(reply
, "(ss)", e
.name
, e
.message
);
280 return sd_bus_message_append(reply
, "(ss)", NULL
, NULL
);
283 static int bus_verify_manage_units_async_full(
287 const char *polkit_message
,
289 sd_bus_message
*call
,
290 sd_bus_error
*error
) {
292 const char *details
[9] = {
297 if (polkit_message
) {
298 details
[4] = "polkit.message";
299 details
[5] = polkit_message
;
300 details
[6] = "polkit.gettext_domain";
301 details
[7] = GETTEXT_PACKAGE
;
304 return bus_verify_polkit_async(
307 "org.freedesktop.systemd1.manage-units",
311 &u
->manager
->polkit_registry
,
315 int bus_unit_method_start_generic(
316 sd_bus_message
*message
,
319 bool reload_if_possible
,
320 sd_bus_error
*error
) {
324 _cleanup_free_
char *verb
= NULL
;
325 static const char *const polkit_message_for_job
[_JOB_TYPE_MAX
] = {
326 [JOB_START
] = N_("Authentication is required to start '$(unit)'."),
327 [JOB_STOP
] = N_("Authentication is required to stop '$(unit)'."),
328 [JOB_RELOAD
] = N_("Authentication is required to reload '$(unit)'."),
329 [JOB_RESTART
] = N_("Authentication is required to restart '$(unit)'."),
330 [JOB_TRY_RESTART
] = N_("Authentication is required to restart '$(unit)'."),
336 assert(job_type
>= 0 && job_type
< _JOB_TYPE_MAX
);
338 r
= mac_selinux_unit_access_check(
340 job_type_to_access_method(job_type
),
345 r
= sd_bus_message_read(message
, "s", &smode
);
349 mode
= job_mode_from_string(smode
);
351 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Job mode %s invalid", smode
);
353 if (reload_if_possible
)
354 verb
= strjoin("reload-or-", job_type_to_string(job_type
));
356 verb
= strdup(job_type_to_string(job_type
));
360 r
= bus_verify_manage_units_async_full(
364 job_type
< _JOB_TYPE_MAX
? polkit_message_for_job
[job_type
] : NULL
,
371 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
373 return bus_unit_queue_job(message
, u
, job_type
, mode
, reload_if_possible
, error
);
376 static int method_start(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
377 return bus_unit_method_start_generic(message
, userdata
, JOB_START
, false, error
);
380 static int method_stop(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
381 return bus_unit_method_start_generic(message
, userdata
, JOB_STOP
, false, error
);
384 static int method_reload(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
385 return bus_unit_method_start_generic(message
, userdata
, JOB_RELOAD
, false, error
);
388 static int method_restart(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
389 return bus_unit_method_start_generic(message
, userdata
, JOB_RESTART
, false, error
);
392 static int method_try_restart(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
393 return bus_unit_method_start_generic(message
, userdata
, JOB_TRY_RESTART
, false, error
);
396 static int method_reload_or_restart(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
397 return bus_unit_method_start_generic(message
, userdata
, JOB_RESTART
, true, error
);
400 static int method_reload_or_try_restart(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
401 return bus_unit_method_start_generic(message
, userdata
, JOB_TRY_RESTART
, true, error
);
404 int bus_unit_method_kill(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
414 r
= mac_selinux_unit_access_check(u
, message
, "stop", error
);
418 r
= sd_bus_message_read(message
, "si", &swho
, &signo
);
425 who
= kill_who_from_string(swho
);
427 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid who argument %s", swho
);
430 if (!SIGNAL_VALID(signo
))
431 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Signal number out of range.");
433 r
= bus_verify_manage_units_async_full(
437 N_("Authentication is required to send a UNIX signal to the processes of '$(unit)'."),
444 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
446 r
= unit_kill(u
, who
, signo
, error
);
450 return sd_bus_reply_method_return(message
, NULL
);
453 int bus_unit_method_reset_failed(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
460 r
= mac_selinux_unit_access_check(u
, message
, "reload", error
);
464 r
= bus_verify_manage_units_async_full(
468 N_("Authentication is required to reset the \"failed\" state of '$(unit)'."),
475 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
477 unit_reset_failed(u
);
479 return sd_bus_reply_method_return(message
, NULL
);
482 int bus_unit_method_set_properties(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
489 r
= mac_selinux_unit_access_check(u
, message
, "start", error
);
493 r
= sd_bus_message_read(message
, "b", &runtime
);
497 r
= bus_verify_manage_units_async_full(
501 N_("Authentication is required to set properties on '$(unit)'."),
508 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
510 r
= bus_unit_set_properties(u
, message
, runtime
? UNIT_RUNTIME
: UNIT_PERSISTENT
, true, error
);
514 return sd_bus_reply_method_return(message
, NULL
);
517 int bus_unit_method_ref(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
524 r
= mac_selinux_unit_access_check(u
, message
, "start", error
);
528 r
= bus_verify_manage_units_async_full(
539 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
541 r
= bus_unit_track_add_sender(u
, message
);
545 return sd_bus_reply_method_return(message
, NULL
);
548 int bus_unit_method_unref(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
555 r
= bus_unit_track_remove_sender(u
, message
);
557 return sd_bus_error_setf(error
, BUS_ERROR_NOT_REFERENCED
, "Unit has not been referenced yet.");
561 return sd_bus_reply_method_return(message
, NULL
);
564 static int property_get_refs(
567 const char *interface
,
568 const char *property
,
569 sd_bus_message
*reply
,
571 sd_bus_error
*error
) {
580 r
= sd_bus_message_open_container(reply
, 'a', "s");
584 for (i
= sd_bus_track_first(u
->bus_track
); i
; i
= sd_bus_track_next(u
->bus_track
)) {
587 c
= sd_bus_track_count_name(u
->bus_track
, i
);
591 /* Add the item multiple times if the ref count for each is above 1 */
592 for (k
= 0; k
< c
; k
++) {
593 r
= sd_bus_message_append(reply
, "s", i
);
599 return sd_bus_message_close_container(reply
);
602 const sd_bus_vtable bus_unit_vtable
[] = {
603 SD_BUS_VTABLE_START(0),
605 SD_BUS_PROPERTY("Id", "s", NULL
, offsetof(Unit
, id
), SD_BUS_VTABLE_PROPERTY_CONST
),
606 SD_BUS_PROPERTY("Names", "as", property_get_names
, offsetof(Unit
, names
), SD_BUS_VTABLE_PROPERTY_CONST
),
607 SD_BUS_PROPERTY("Following", "s", property_get_following
, 0, 0),
608 SD_BUS_PROPERTY("Requires", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_REQUIRES
]), SD_BUS_VTABLE_PROPERTY_CONST
),
609 SD_BUS_PROPERTY("Requisite", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_REQUISITE
]), SD_BUS_VTABLE_PROPERTY_CONST
),
610 SD_BUS_PROPERTY("Wants", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_WANTS
]), SD_BUS_VTABLE_PROPERTY_CONST
),
611 SD_BUS_PROPERTY("BindsTo", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_BINDS_TO
]), SD_BUS_VTABLE_PROPERTY_CONST
),
612 SD_BUS_PROPERTY("PartOf", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_PART_OF
]), SD_BUS_VTABLE_PROPERTY_CONST
),
613 SD_BUS_PROPERTY("RequiredBy", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_REQUIRED_BY
]), SD_BUS_VTABLE_PROPERTY_CONST
),
614 SD_BUS_PROPERTY("RequisiteOf", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_REQUISITE_OF
]), SD_BUS_VTABLE_PROPERTY_CONST
),
615 SD_BUS_PROPERTY("WantedBy", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_WANTED_BY
]), SD_BUS_VTABLE_PROPERTY_CONST
),
616 SD_BUS_PROPERTY("BoundBy", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_BOUND_BY
]), SD_BUS_VTABLE_PROPERTY_CONST
),
617 SD_BUS_PROPERTY("ConsistsOf", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_CONSISTS_OF
]), SD_BUS_VTABLE_PROPERTY_CONST
),
618 SD_BUS_PROPERTY("Conflicts", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_CONFLICTS
]), SD_BUS_VTABLE_PROPERTY_CONST
),
619 SD_BUS_PROPERTY("ConflictedBy", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_CONFLICTED_BY
]), SD_BUS_VTABLE_PROPERTY_CONST
),
620 SD_BUS_PROPERTY("Before", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_BEFORE
]), SD_BUS_VTABLE_PROPERTY_CONST
),
621 SD_BUS_PROPERTY("After", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_AFTER
]), SD_BUS_VTABLE_PROPERTY_CONST
),
622 SD_BUS_PROPERTY("OnFailure", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_ON_FAILURE
]), SD_BUS_VTABLE_PROPERTY_CONST
),
623 SD_BUS_PROPERTY("Triggers", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_TRIGGERS
]), SD_BUS_VTABLE_PROPERTY_CONST
),
624 SD_BUS_PROPERTY("TriggeredBy", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_TRIGGERED_BY
]), SD_BUS_VTABLE_PROPERTY_CONST
),
625 SD_BUS_PROPERTY("PropagatesReloadTo", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_PROPAGATES_RELOAD_TO
]), SD_BUS_VTABLE_PROPERTY_CONST
),
626 SD_BUS_PROPERTY("ReloadPropagatedFrom", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_RELOAD_PROPAGATED_FROM
]), SD_BUS_VTABLE_PROPERTY_CONST
),
627 SD_BUS_PROPERTY("JoinsNamespaceOf", "as", property_get_dependencies
, offsetof(Unit
, dependencies
[UNIT_JOINS_NAMESPACE_OF
]), SD_BUS_VTABLE_PROPERTY_CONST
),
628 SD_BUS_PROPERTY("RequiresMountsFor", "as", property_get_requires_mounts_for
, offsetof(Unit
, requires_mounts_for
), SD_BUS_VTABLE_PROPERTY_CONST
),
629 SD_BUS_PROPERTY("Documentation", "as", NULL
, offsetof(Unit
, documentation
), SD_BUS_VTABLE_PROPERTY_CONST
),
630 SD_BUS_PROPERTY("Description", "s", property_get_description
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
631 SD_BUS_PROPERTY("LoadState", "s", property_get_load_state
, offsetof(Unit
, load_state
), SD_BUS_VTABLE_PROPERTY_CONST
),
632 SD_BUS_PROPERTY("ActiveState", "s", property_get_active_state
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
633 SD_BUS_PROPERTY("SubState", "s", property_get_sub_state
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
634 SD_BUS_PROPERTY("FragmentPath", "s", NULL
, offsetof(Unit
, fragment_path
), SD_BUS_VTABLE_PROPERTY_CONST
),
635 SD_BUS_PROPERTY("SourcePath", "s", NULL
, offsetof(Unit
, source_path
), SD_BUS_VTABLE_PROPERTY_CONST
),
636 SD_BUS_PROPERTY("DropInPaths", "as", NULL
, offsetof(Unit
, dropin_paths
), SD_BUS_VTABLE_PROPERTY_CONST
),
637 SD_BUS_PROPERTY("UnitFileState", "s", property_get_unit_file_state
, 0, 0),
638 SD_BUS_PROPERTY("UnitFilePreset", "s", property_get_unit_file_preset
, 0, 0),
639 BUS_PROPERTY_DUAL_TIMESTAMP("StateChangeTimestamp", offsetof(Unit
, state_change_timestamp
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
640 BUS_PROPERTY_DUAL_TIMESTAMP("InactiveExitTimestamp", offsetof(Unit
, inactive_exit_timestamp
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
641 BUS_PROPERTY_DUAL_TIMESTAMP("ActiveEnterTimestamp", offsetof(Unit
, active_enter_timestamp
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
642 BUS_PROPERTY_DUAL_TIMESTAMP("ActiveExitTimestamp", offsetof(Unit
, active_exit_timestamp
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
643 BUS_PROPERTY_DUAL_TIMESTAMP("InactiveEnterTimestamp", offsetof(Unit
, inactive_enter_timestamp
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
644 SD_BUS_PROPERTY("CanStart", "b", property_get_can_start
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
645 SD_BUS_PROPERTY("CanStop", "b", property_get_can_stop
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
646 SD_BUS_PROPERTY("CanReload", "b", property_get_can_reload
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
647 SD_BUS_PROPERTY("CanIsolate", "b", property_get_can_isolate
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
648 SD_BUS_PROPERTY("Job", "(uo)", property_get_job
, offsetof(Unit
, job
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
649 SD_BUS_PROPERTY("StopWhenUnneeded", "b", bus_property_get_bool
, offsetof(Unit
, stop_when_unneeded
), SD_BUS_VTABLE_PROPERTY_CONST
),
650 SD_BUS_PROPERTY("RefuseManualStart", "b", bus_property_get_bool
, offsetof(Unit
, refuse_manual_start
), SD_BUS_VTABLE_PROPERTY_CONST
),
651 SD_BUS_PROPERTY("RefuseManualStop", "b", bus_property_get_bool
, offsetof(Unit
, refuse_manual_stop
), SD_BUS_VTABLE_PROPERTY_CONST
),
652 SD_BUS_PROPERTY("AllowIsolate", "b", bus_property_get_bool
, offsetof(Unit
, allow_isolate
), SD_BUS_VTABLE_PROPERTY_CONST
),
653 SD_BUS_PROPERTY("DefaultDependencies", "b", bus_property_get_bool
, offsetof(Unit
, default_dependencies
), SD_BUS_VTABLE_PROPERTY_CONST
),
654 SD_BUS_PROPERTY("OnFailureJobMode", "s", property_get_job_mode
, offsetof(Unit
, on_failure_job_mode
), SD_BUS_VTABLE_PROPERTY_CONST
),
655 SD_BUS_PROPERTY("IgnoreOnIsolate", "b", bus_property_get_bool
, offsetof(Unit
, ignore_on_isolate
), SD_BUS_VTABLE_PROPERTY_CONST
),
656 SD_BUS_PROPERTY("NeedDaemonReload", "b", property_get_need_daemon_reload
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
657 SD_BUS_PROPERTY("JobTimeoutUSec", "t", bus_property_get_usec
, offsetof(Unit
, job_timeout
), SD_BUS_VTABLE_PROPERTY_CONST
),
658 SD_BUS_PROPERTY("JobRunningTimeoutUSec", "t", bus_property_get_usec
, offsetof(Unit
, job_running_timeout
), SD_BUS_VTABLE_PROPERTY_CONST
),
659 SD_BUS_PROPERTY("JobTimeoutAction", "s", property_get_emergency_action
, offsetof(Unit
, job_timeout_action
), SD_BUS_VTABLE_PROPERTY_CONST
),
660 SD_BUS_PROPERTY("JobTimeoutRebootArgument", "s", NULL
, offsetof(Unit
, job_timeout_reboot_arg
), SD_BUS_VTABLE_PROPERTY_CONST
),
661 SD_BUS_PROPERTY("ConditionResult", "b", bus_property_get_bool
, offsetof(Unit
, condition_result
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
662 SD_BUS_PROPERTY("AssertResult", "b", bus_property_get_bool
, offsetof(Unit
, assert_result
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
663 BUS_PROPERTY_DUAL_TIMESTAMP("ConditionTimestamp", offsetof(Unit
, condition_timestamp
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
664 BUS_PROPERTY_DUAL_TIMESTAMP("AssertTimestamp", offsetof(Unit
, assert_timestamp
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
665 SD_BUS_PROPERTY("Conditions", "a(sbbsi)", property_get_conditions
, offsetof(Unit
, conditions
), 0),
666 SD_BUS_PROPERTY("Asserts", "a(sbbsi)", property_get_conditions
, offsetof(Unit
, asserts
), 0),
667 SD_BUS_PROPERTY("LoadError", "(ss)", property_get_load_error
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
668 SD_BUS_PROPERTY("Transient", "b", bus_property_get_bool
, offsetof(Unit
, transient
), SD_BUS_VTABLE_PROPERTY_CONST
),
669 SD_BUS_PROPERTY("Perpetual", "b", bus_property_get_bool
, offsetof(Unit
, perpetual
), SD_BUS_VTABLE_PROPERTY_CONST
),
670 SD_BUS_PROPERTY("StartLimitIntervalUSec", "t", bus_property_get_usec
, offsetof(Unit
, start_limit
.interval
), SD_BUS_VTABLE_PROPERTY_CONST
),
671 SD_BUS_PROPERTY("StartLimitBurst", "u", bus_property_get_unsigned
, offsetof(Unit
, start_limit
.burst
), SD_BUS_VTABLE_PROPERTY_CONST
),
672 SD_BUS_PROPERTY("StartLimitAction", "s", property_get_emergency_action
, offsetof(Unit
, start_limit_action
), SD_BUS_VTABLE_PROPERTY_CONST
),
673 SD_BUS_PROPERTY("FailureAction", "s", property_get_emergency_action
, offsetof(Unit
, failure_action
), SD_BUS_VTABLE_PROPERTY_CONST
),
674 SD_BUS_PROPERTY("SuccessAction", "s", property_get_emergency_action
, offsetof(Unit
, success_action
), SD_BUS_VTABLE_PROPERTY_CONST
),
675 SD_BUS_PROPERTY("RebootArgument", "s", NULL
, offsetof(Unit
, reboot_arg
), SD_BUS_VTABLE_PROPERTY_CONST
),
676 SD_BUS_PROPERTY("InvocationID", "ay", bus_property_get_id128
, offsetof(Unit
, invocation_id
), 0),
677 SD_BUS_PROPERTY("CollectMode", "s", property_get_collect_mode
, offsetof(Unit
, collect_mode
), 0),
678 SD_BUS_PROPERTY("Refs", "as", property_get_refs
, 0, 0),
680 SD_BUS_METHOD("Start", "s", "o", method_start
, SD_BUS_VTABLE_UNPRIVILEGED
),
681 SD_BUS_METHOD("Stop", "s", "o", method_stop
, SD_BUS_VTABLE_UNPRIVILEGED
),
682 SD_BUS_METHOD("Reload", "s", "o", method_reload
, SD_BUS_VTABLE_UNPRIVILEGED
),
683 SD_BUS_METHOD("Restart", "s", "o", method_restart
, SD_BUS_VTABLE_UNPRIVILEGED
),
684 SD_BUS_METHOD("TryRestart", "s", "o", method_try_restart
, SD_BUS_VTABLE_UNPRIVILEGED
),
685 SD_BUS_METHOD("ReloadOrRestart", "s", "o", method_reload_or_restart
, SD_BUS_VTABLE_UNPRIVILEGED
),
686 SD_BUS_METHOD("ReloadOrTryRestart", "s", "o", method_reload_or_try_restart
, SD_BUS_VTABLE_UNPRIVILEGED
),
687 SD_BUS_METHOD("Kill", "si", NULL
, bus_unit_method_kill
, SD_BUS_VTABLE_UNPRIVILEGED
),
688 SD_BUS_METHOD("ResetFailed", NULL
, NULL
, bus_unit_method_reset_failed
, SD_BUS_VTABLE_UNPRIVILEGED
),
689 SD_BUS_METHOD("SetProperties", "ba(sv)", NULL
, bus_unit_method_set_properties
, SD_BUS_VTABLE_UNPRIVILEGED
),
690 SD_BUS_METHOD("Ref", NULL
, NULL
, bus_unit_method_ref
, SD_BUS_VTABLE_UNPRIVILEGED
),
691 SD_BUS_METHOD("Unref", NULL
, NULL
, bus_unit_method_unref
, SD_BUS_VTABLE_UNPRIVILEGED
),
693 /* For dependency types we don't support anymore always return an empty array */
694 SD_BUS_PROPERTY("RequiresOverridable", "as", property_get_empty_strv
, 0, SD_BUS_VTABLE_HIDDEN
),
695 SD_BUS_PROPERTY("RequisiteOverridable", "as", property_get_empty_strv
, 0, SD_BUS_VTABLE_HIDDEN
),
696 SD_BUS_PROPERTY("RequiredByOverridable", "as", property_get_empty_strv
, 0, SD_BUS_VTABLE_HIDDEN
),
697 SD_BUS_PROPERTY("RequisiteOfOverridable", "as", property_get_empty_strv
, 0, SD_BUS_VTABLE_HIDDEN
),
698 /* Obsolete alias names */
699 SD_BUS_PROPERTY("StartLimitInterval", "t", bus_property_get_usec
, offsetof(Unit
, start_limit
.interval
), SD_BUS_VTABLE_PROPERTY_CONST
|SD_BUS_VTABLE_HIDDEN
),
700 SD_BUS_PROPERTY("StartLimitIntervalSec", "t", bus_property_get_usec
, offsetof(Unit
, start_limit
.interval
), SD_BUS_VTABLE_PROPERTY_CONST
|SD_BUS_VTABLE_HIDDEN
),
704 static int property_get_slice(
707 const char *interface
,
708 const char *property
,
709 sd_bus_message
*reply
,
711 sd_bus_error
*error
) {
719 return sd_bus_message_append(reply
, "s", unit_slice_name(u
));
722 static int property_get_current_memory(
725 const char *interface
,
726 const char *property
,
727 sd_bus_message
*reply
,
729 sd_bus_error
*error
) {
731 uint64_t sz
= (uint64_t) -1;
739 r
= unit_get_memory_current(u
, &sz
);
740 if (r
< 0 && r
!= -ENODATA
)
741 log_unit_warning_errno(u
, r
, "Failed to get memory.usage_in_bytes attribute: %m");
743 return sd_bus_message_append(reply
, "t", sz
);
746 static int property_get_current_tasks(
749 const char *interface
,
750 const char *property
,
751 sd_bus_message
*reply
,
753 sd_bus_error
*error
) {
755 uint64_t cn
= (uint64_t) -1;
763 r
= unit_get_tasks_current(u
, &cn
);
764 if (r
< 0 && r
!= -ENODATA
)
765 log_unit_warning_errno(u
, r
, "Failed to get pids.current attribute: %m");
767 return sd_bus_message_append(reply
, "t", cn
);
770 static int property_get_cpu_usage(
773 const char *interface
,
774 const char *property
,
775 sd_bus_message
*reply
,
777 sd_bus_error
*error
) {
779 nsec_t ns
= (nsec_t
) -1;
787 r
= unit_get_cpu_usage(u
, &ns
);
788 if (r
< 0 && r
!= -ENODATA
)
789 log_unit_warning_errno(u
, r
, "Failed to get cpuacct.usage attribute: %m");
791 return sd_bus_message_append(reply
, "t", ns
);
794 static int property_get_cgroup(
797 const char *interface
,
798 const char *property
,
799 sd_bus_message
*reply
,
801 sd_bus_error
*error
) {
804 const char *t
= NULL
;
810 /* Three cases: a) u->cgroup_path is NULL, in which case the
811 * unit has no control group, which we report as the empty
812 * string. b) u->cgroup_path is the empty string, which
813 * indicates the root cgroup, which we report as "/". c) all
814 * other cases we report as-is. */
817 t
= empty_to_root(u
->cgroup_path
);
819 return sd_bus_message_append(reply
, "s", t
);
822 static int append_process(sd_bus_message
*reply
, const char *p
, pid_t pid
, Set
*pids
) {
823 _cleanup_free_
char *buf
= NULL
, *cmdline
= NULL
;
829 r
= set_put(pids
, PID_TO_PTR(pid
));
830 if (IN_SET(r
, 0, -EEXIST
))
836 r
= cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER
, pid
, &buf
);
845 (void) get_process_cmdline(pid
, 0, true, &cmdline
);
847 return sd_bus_message_append(reply
,
854 static int append_cgroup(sd_bus_message
*reply
, const char *p
, Set
*pids
) {
855 _cleanup_closedir_
DIR *d
= NULL
;
856 _cleanup_fclose_
FILE *f
= NULL
;
862 r
= cg_enumerate_processes(SYSTEMD_CGROUP_CONTROLLER
, p
, &f
);
871 r
= cg_read_pid(f
, &pid
);
877 if (is_kernel_thread(pid
) > 0)
880 r
= append_process(reply
, p
, pid
, pids
);
885 r
= cg_enumerate_subgroups(SYSTEMD_CGROUP_CONTROLLER
, p
, &d
);
892 _cleanup_free_
char *g
= NULL
, *j
= NULL
;
894 r
= cg_read_subgroup(d
, &g
);
900 j
= strjoin(p
, "/", g
);
904 r
= append_cgroup(reply
, j
, pids
);
912 int bus_unit_method_get_processes(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
913 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*reply
= NULL
;
914 _cleanup_set_free_ Set
*pids
= NULL
;
921 r
= mac_selinux_unit_access_check(u
, message
, "status", error
);
925 pids
= set_new(NULL
);
929 r
= sd_bus_message_new_method_return(message
, &reply
);
933 r
= sd_bus_message_open_container(reply
, 'a', "(sus)");
937 if (u
->cgroup_path
) {
938 r
= append_cgroup(reply
, u
->cgroup_path
, pids
);
943 /* The main and control pids might live outside of the cgroup, hence fetch them separately */
944 pid
= unit_main_pid(u
);
946 r
= append_process(reply
, NULL
, pid
, pids
);
951 pid
= unit_control_pid(u
);
953 r
= append_process(reply
, NULL
, pid
, pids
);
958 r
= sd_bus_message_close_container(reply
);
962 return sd_bus_send(NULL
, reply
, NULL
);
965 static int property_get_ip_counter(
968 const char *interface
,
969 const char *property
,
970 sd_bus_message
*reply
,
972 sd_bus_error
*error
) {
974 CGroupIPAccountingMetric metric
;
975 uint64_t value
= (uint64_t) -1;
983 if (streq(property
, "IPIngressBytes"))
984 metric
= CGROUP_IP_INGRESS_BYTES
;
985 else if (streq(property
, "IPIngressPackets"))
986 metric
= CGROUP_IP_INGRESS_PACKETS
;
987 else if (streq(property
, "IPEgressBytes"))
988 metric
= CGROUP_IP_EGRESS_BYTES
;
990 assert(streq(property
, "IPEgressPackets"));
991 metric
= CGROUP_IP_EGRESS_PACKETS
;
994 (void) unit_get_ip_accounting(u
, metric
, &value
);
995 return sd_bus_message_append(reply
, "t", value
);
998 int bus_unit_method_attach_processes(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
1000 _cleanup_(sd_bus_creds_unrefp
) sd_bus_creds
*creds
= NULL
;
1001 _cleanup_set_free_ Set
*pids
= NULL
;
1008 /* This migrates the processes with the specified PIDs into the cgroup of this unit, optionally below a
1009 * specified cgroup path. Obviously this only works for units that actually maintain a cgroup
1010 * representation. If a process is already in the cgroup no operation is executed – in this case the specified
1011 * subcgroup path has no effect! */
1013 r
= mac_selinux_unit_access_check(u
, message
, "start", error
);
1017 r
= sd_bus_message_read(message
, "s", &path
);
1021 path
= empty_to_null(path
);
1023 if (!path_is_absolute(path
))
1024 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Control group path is not absolute: %s", path
);
1026 if (!path_is_normalized(path
))
1027 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Control group path is not normalized: %s", path
);
1030 if (!unit_cgroup_delegate(u
))
1031 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Process migration not available on non-delegated units.");
1033 if (UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(u
)))
1034 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Unit is not active, refusing.");
1036 r
= sd_bus_query_sender_creds(message
, SD_BUS_CREDS_EUID
|SD_BUS_CREDS_PID
, &creds
);
1040 r
= sd_bus_message_enter_container(message
, 'a', "u");
1044 uid_t process_uid
, sender_uid
;
1048 r
= sd_bus_message_read(message
, "u", &upid
);
1055 r
= sd_bus_creds_get_pid(creds
, &pid
);
1061 /* Filter out duplicates */
1062 if (set_contains(pids
, PID_TO_PTR(pid
)))
1065 /* Check if this process is suitable for attaching to this unit */
1066 r
= unit_pid_attachable(u
, pid
, error
);
1070 /* Let's query the sender's UID, so that we can make our security decisions */
1071 r
= sd_bus_creds_get_euid(creds
, &sender_uid
);
1075 /* Let's validate security: if the sender is root, then all is OK. If the sender is any other unit,
1076 * then the process' UID and the target unit's UID have to match the sender's UID */
1077 if (sender_uid
!= 0 && sender_uid
!= getuid()) {
1078 r
= get_process_uid(pid
, &process_uid
);
1080 return sd_bus_error_set_errnof(error
, r
, "Failed to retrieve process UID: %m");
1082 if (process_uid
!= sender_uid
)
1083 return sd_bus_error_setf(error
, SD_BUS_ERROR_ACCESS_DENIED
, "Process " PID_FMT
" not owned by client's UID. Refusing.", pid
);
1084 if (process_uid
!= u
->ref_uid
)
1085 return sd_bus_error_setf(error
, SD_BUS_ERROR_ACCESS_DENIED
, "Process " PID_FMT
" not owned by target unit's UID. Refusing.", pid
);
1089 pids
= set_new(NULL
);
1094 r
= set_put(pids
, PID_TO_PTR(pid
));
1099 r
= sd_bus_message_exit_container(message
);
1103 r
= unit_attach_pids_to_cgroup(u
, pids
, path
);
1105 return sd_bus_error_set_errnof(error
, r
, "Failed to attach processes to control group: %m");
1107 return sd_bus_reply_method_return(message
, NULL
);
1110 const sd_bus_vtable bus_unit_cgroup_vtable
[] = {
1111 SD_BUS_VTABLE_START(0),
1112 SD_BUS_PROPERTY("Slice", "s", property_get_slice
, 0, 0),
1113 SD_BUS_PROPERTY("ControlGroup", "s", property_get_cgroup
, 0, 0),
1114 SD_BUS_PROPERTY("MemoryCurrent", "t", property_get_current_memory
, 0, 0),
1115 SD_BUS_PROPERTY("CPUUsageNSec", "t", property_get_cpu_usage
, 0, 0),
1116 SD_BUS_PROPERTY("TasksCurrent", "t", property_get_current_tasks
, 0, 0),
1117 SD_BUS_PROPERTY("IPIngressBytes", "t", property_get_ip_counter
, 0, 0),
1118 SD_BUS_PROPERTY("IPIngressPackets", "t", property_get_ip_counter
, 0, 0),
1119 SD_BUS_PROPERTY("IPEgressBytes", "t", property_get_ip_counter
, 0, 0),
1120 SD_BUS_PROPERTY("IPEgressPackets", "t", property_get_ip_counter
, 0, 0),
1121 SD_BUS_METHOD("GetProcesses", NULL
, "a(sus)", bus_unit_method_get_processes
, SD_BUS_VTABLE_UNPRIVILEGED
),
1122 SD_BUS_METHOD("AttachProcesses", "sau", NULL
, bus_unit_method_attach_processes
, SD_BUS_VTABLE_UNPRIVILEGED
),
1126 static int send_new_signal(sd_bus
*bus
, void *userdata
) {
1127 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*m
= NULL
;
1128 _cleanup_free_
char *p
= NULL
;
1135 p
= unit_dbus_path(u
);
1139 r
= sd_bus_message_new_signal(
1142 "/org/freedesktop/systemd1",
1143 "org.freedesktop.systemd1.Manager",
1148 r
= sd_bus_message_append(m
, "so", u
->id
, p
);
1152 return sd_bus_send(bus
, m
, NULL
);
1155 static int send_changed_signal(sd_bus
*bus
, void *userdata
) {
1156 _cleanup_free_
char *p
= NULL
;
1163 p
= unit_dbus_path(u
);
1167 /* Send a properties changed signal. First for the specific
1168 * type, then for the generic unit. The clients may rely on
1169 * this order to get atomic behavior if needed. */
1171 r
= sd_bus_emit_properties_changed_strv(
1173 unit_dbus_interface_from_type(u
->type
),
1178 return sd_bus_emit_properties_changed_strv(
1180 "org.freedesktop.systemd1.Unit",
1184 void bus_unit_send_change_signal(Unit
*u
) {
1188 if (u
->in_dbus_queue
) {
1189 LIST_REMOVE(dbus_queue
, u
->manager
->dbus_unit_queue
, u
);
1190 u
->in_dbus_queue
= false;
1196 r
= bus_foreach_bus(u
->manager
, u
->bus_track
, u
->sent_dbus_new_signal
? send_changed_signal
: send_new_signal
, u
);
1198 log_unit_debug_errno(u
, r
, "Failed to send unit change signal for %s: %m", u
->id
);
1200 u
->sent_dbus_new_signal
= true;
1203 static int send_removed_signal(sd_bus
*bus
, void *userdata
) {
1204 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*m
= NULL
;
1205 _cleanup_free_
char *p
= NULL
;
1212 p
= unit_dbus_path(u
);
1216 r
= sd_bus_message_new_signal(
1219 "/org/freedesktop/systemd1",
1220 "org.freedesktop.systemd1.Manager",
1225 r
= sd_bus_message_append(m
, "so", u
->id
, p
);
1229 return sd_bus_send(bus
, m
, NULL
);
1232 void bus_unit_send_removed_signal(Unit
*u
) {
1236 if (!u
->sent_dbus_new_signal
|| u
->in_dbus_queue
)
1237 bus_unit_send_change_signal(u
);
1242 r
= bus_foreach_bus(u
->manager
, u
->bus_track
, send_removed_signal
, u
);
1244 log_unit_debug_errno(u
, r
, "Failed to send unit remove signal for %s: %m", u
->id
);
1247 int bus_unit_queue_job(
1248 sd_bus_message
*message
,
1252 bool reload_if_possible
,
1253 sd_bus_error
*error
) {
1255 _cleanup_free_
char *path
= NULL
;
1261 assert(type
>= 0 && type
< _JOB_TYPE_MAX
);
1262 assert(mode
>= 0 && mode
< _JOB_MODE_MAX
);
1264 r
= mac_selinux_unit_access_check(
1266 job_type_to_access_method(type
),
1271 if (reload_if_possible
&& unit_can_reload(u
)) {
1272 if (type
== JOB_RESTART
)
1273 type
= JOB_RELOAD_OR_START
;
1274 else if (type
== JOB_TRY_RESTART
)
1275 type
= JOB_TRY_RELOAD
;
1278 if (type
== JOB_STOP
&&
1279 IN_SET(u
->load_state
, UNIT_NOT_FOUND
, UNIT_ERROR
, UNIT_BAD_SETTING
) &&
1280 unit_active_state(u
) == UNIT_INACTIVE
)
1281 return sd_bus_error_setf(error
, BUS_ERROR_NO_SUCH_UNIT
, "Unit %s not loaded.", u
->id
);
1283 if ((type
== JOB_START
&& u
->refuse_manual_start
) ||
1284 (type
== JOB_STOP
&& u
->refuse_manual_stop
) ||
1285 (IN_SET(type
, JOB_RESTART
, JOB_TRY_RESTART
) && (u
->refuse_manual_start
|| u
->refuse_manual_stop
)) ||
1286 (type
== JOB_RELOAD_OR_START
&& job_type_collapse(type
, u
) == JOB_START
&& u
->refuse_manual_start
))
1287 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
);
1289 r
= manager_add_job(u
->manager
, type
, u
, mode
, error
, &j
);
1293 r
= bus_job_track_sender(j
, message
);
1297 path
= job_dbus_path(j
);
1301 return sd_bus_reply_method_return(message
, "o", path
);
1304 static int bus_unit_set_live_property(
1307 sd_bus_message
*message
,
1308 UnitWriteFlags flags
,
1309 sd_bus_error
*error
) {
1317 /* Handles setting properties both "live" (i.e. at any time during runtime), and during creation (for transient
1318 * units that are being created). */
1320 if (streq(name
, "Description")) {
1323 r
= sd_bus_message_read(message
, "s", &d
);
1327 if (!UNIT_WRITE_FLAGS_NOOP(flags
)) {
1328 r
= unit_set_description(u
, d
);
1332 unit_write_settingf(u
, flags
|UNIT_ESCAPE_SPECIFIERS
, name
, "Description=%s", d
);
1341 static int bus_set_transient_emergency_action(
1345 sd_bus_message
*message
,
1346 UnitWriteFlags flags
,
1347 sd_bus_error
*error
) {
1356 r
= sd_bus_message_read(message
, "s", &s
);
1360 system
= MANAGER_IS_SYSTEM(u
->manager
);
1361 r
= parse_emergency_action(s
, system
, &v
);
1363 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
,
1364 v
== -EOPNOTSUPP
? "EmergencyAction setting invalid for manager type: %s"
1365 : "Invalid %s setting: %s",
1368 if (!UNIT_WRITE_FLAGS_NOOP(flags
)) {
1370 unit_write_settingf(u
, flags
, name
,
1377 static BUS_DEFINE_SET_TRANSIENT_PARSE(collect_mode
, CollectMode
, collect_mode_from_string
);
1378 static BUS_DEFINE_SET_TRANSIENT_PARSE(job_mode
, JobMode
, job_mode_from_string
);
1380 static int bus_set_transient_conditions(
1385 sd_bus_message
*message
,
1386 UnitWriteFlags flags
,
1387 sd_bus_error
*error
) {
1389 const char *type_name
, *param
;
1390 int trigger
, negate
, r
;
1395 r
= sd_bus_message_enter_container(message
, 'a', "(sbbs)");
1399 while ((r
= sd_bus_message_read(message
, "(sbbs)", &type_name
, &trigger
, &negate
, ¶m
)) > 0) {
1402 t
= is_condition
? condition_type_from_string(type_name
) : assert_type_from_string(type_name
);
1404 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid condition type: %s", type_name
);
1406 if (t
!= CONDITION_NULL
) {
1408 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Condition parameter in %s is empty", type_name
);
1410 if (condition_takes_path(t
) && !path_is_absolute(param
))
1411 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Path in condition %s is not absolute: %s", type_name
, param
);
1415 if (!UNIT_WRITE_FLAGS_NOOP(flags
)) {
1418 c
= condition_new(t
, param
, trigger
, negate
);
1422 LIST_PREPEND(conditions
, *list
, c
);
1424 if (t
!= CONDITION_NULL
)
1425 unit_write_settingf(u
, flags
|UNIT_ESCAPE_SPECIFIERS
, name
,
1426 "%s=%s%s%s", type_name
,
1427 trigger
? "|" : "", negate
? "!" : "", param
);
1429 unit_write_settingf(u
, flags
, name
,
1430 "%s=%s%s", type_name
,
1431 trigger
? "|" : "", yes_no(!negate
));
1439 r
= sd_bus_message_exit_container(message
);
1443 if (!UNIT_WRITE_FLAGS_NOOP(flags
) && empty
) {
1444 *list
= condition_free_list(*list
);
1445 unit_write_settingf(u
, flags
, name
, "%sNull=", is_condition
? "Condition" : "Assert");
1451 static int bus_unit_set_transient_property(
1454 sd_bus_message
*message
,
1455 UnitWriteFlags flags
,
1456 sd_bus_error
*error
) {
1458 UnitDependency d
= _UNIT_DEPENDENCY_INVALID
;
1465 /* Handles settings when transient units are created. This settings cannot be altered anymore after the unit
1466 * has been created. */
1468 if (streq(name
, "SourcePath"))
1469 return bus_set_transient_path(u
, name
, &u
->source_path
, message
, flags
, error
);
1471 if (streq(name
, "StopWhenUnneeded"))
1472 return bus_set_transient_bool(u
, name
, &u
->stop_when_unneeded
, message
, flags
, error
);
1474 if (streq(name
, "RefuseManualStart"))
1475 return bus_set_transient_bool(u
, name
, &u
->refuse_manual_start
, message
, flags
, error
);
1477 if (streq(name
, "RefuseManualStop"))
1478 return bus_set_transient_bool(u
, name
, &u
->refuse_manual_stop
, message
, flags
, error
);
1480 if (streq(name
, "AllowIsolate"))
1481 return bus_set_transient_bool(u
, name
, &u
->allow_isolate
, message
, flags
, error
);
1483 if (streq(name
, "DefaultDependencies"))
1484 return bus_set_transient_bool(u
, name
, &u
->default_dependencies
, message
, flags
, error
);
1486 if (streq(name
, "OnFailureJobMode"))
1487 return bus_set_transient_job_mode(u
, name
, &u
->on_failure_job_mode
, message
, flags
, error
);
1489 if (streq(name
, "IgnoreOnIsolate"))
1490 return bus_set_transient_bool(u
, name
, &u
->ignore_on_isolate
, message
, flags
, error
);
1492 if (streq(name
, "JobTimeoutUSec")) {
1493 r
= bus_set_transient_usec_fix_0(u
, name
, &u
->job_timeout
, message
, flags
, error
);
1494 if (r
>= 0 && !UNIT_WRITE_FLAGS_NOOP(flags
) && !u
->job_running_timeout_set
)
1495 u
->job_running_timeout
= u
->job_timeout
;
1498 if (streq(name
, "JobRunningTimeoutUSec")) {
1499 r
= bus_set_transient_usec_fix_0(u
, name
, &u
->job_running_timeout
, message
, flags
, error
);
1500 if (r
>= 0 && !UNIT_WRITE_FLAGS_NOOP(flags
))
1501 u
->job_running_timeout_set
= true;
1506 if (streq(name
, "JobTimeoutAction"))
1507 return bus_set_transient_emergency_action(u
, name
, &u
->job_timeout_action
, message
, flags
, error
);
1509 if (streq(name
, "JobTimeoutRebootArgument"))
1510 return bus_set_transient_string(u
, name
, &u
->job_timeout_reboot_arg
, message
, flags
, error
);
1512 if (streq(name
, "StartLimitIntervalUSec"))
1513 return bus_set_transient_usec(u
, name
, &u
->start_limit
.interval
, message
, flags
, error
);
1515 if (streq(name
, "StartLimitBurst"))
1516 return bus_set_transient_unsigned(u
, name
, &u
->start_limit
.burst
, message
, flags
, error
);
1518 if (streq(name
, "StartLimitAction"))
1519 return bus_set_transient_emergency_action(u
, name
, &u
->start_limit_action
, message
, flags
, error
);
1521 if (streq(name
, "FailureAction"))
1522 return bus_set_transient_emergency_action(u
, name
, &u
->failure_action
, message
, flags
, error
);
1524 if (streq(name
, "SuccessAction"))
1525 return bus_set_transient_emergency_action(u
, name
, &u
->success_action
, message
, flags
, error
);
1527 if (streq(name
, "RebootArgument"))
1528 return bus_set_transient_string(u
, name
, &u
->reboot_arg
, message
, flags
, error
);
1530 if (streq(name
, "CollectMode"))
1531 return bus_set_transient_collect_mode(u
, name
, &u
->collect_mode
, message
, flags
, error
);
1533 if (streq(name
, "Conditions"))
1534 return bus_set_transient_conditions(u
, name
, &u
->conditions
, true, message
, flags
, error
);
1536 if (streq(name
, "Asserts"))
1537 return bus_set_transient_conditions(u
, name
, &u
->asserts
, false, message
, flags
, error
);
1539 if (streq(name
, "Documentation")) {
1540 _cleanup_strv_free_
char **l
= NULL
;
1543 r
= sd_bus_message_read_strv(message
, &l
);
1547 STRV_FOREACH(p
, l
) {
1548 if (!documentation_url_is_valid(*p
))
1549 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid URL in %s: %s", name
, *p
);
1552 if (!UNIT_WRITE_FLAGS_NOOP(flags
)) {
1553 if (strv_isempty(l
)) {
1554 u
->documentation
= strv_free(u
->documentation
);
1555 unit_write_settingf(u
, flags
, name
, "%s=", name
);
1557 strv_extend_strv(&u
->documentation
, l
, false);
1560 unit_write_settingf(u
, flags
, name
, "%s=%s", name
, *p
);
1566 } else if (streq(name
, "Slice")) {
1570 if (!UNIT_HAS_CGROUP_CONTEXT(u
))
1571 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "The slice property is only available for units with control groups.");
1572 if (u
->type
== UNIT_SLICE
)
1573 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Slice may not be set for slice units.");
1574 if (unit_has_name(u
, SPECIAL_INIT_SCOPE
))
1575 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Cannot set slice for init.scope");
1577 r
= sd_bus_message_read(message
, "s", &s
);
1581 if (!unit_name_is_valid(s
, UNIT_NAME_PLAIN
))
1582 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid unit name '%s'", s
);
1584 /* Note that we do not dispatch the load queue here yet, as we don't want our own transient unit to be
1585 * loaded while we are still setting it up. Or in other words, we use manager_load_unit_prepare()
1586 * instead of manager_load_unit() on purpose, here. */
1587 r
= manager_load_unit_prepare(u
->manager
, s
, NULL
, error
, &slice
);
1591 if (slice
->type
!= UNIT_SLICE
)
1592 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Unit name '%s' is not a slice", s
);
1594 if (!UNIT_WRITE_FLAGS_NOOP(flags
)) {
1595 r
= unit_set_slice(u
, slice
);
1599 unit_write_settingf(u
, flags
|UNIT_PRIVATE
, name
, "Slice=%s", s
);
1604 } else if (streq(name
, "RequiresMountsFor")) {
1605 _cleanup_strv_free_
char **l
= NULL
;
1608 r
= sd_bus_message_read_strv(message
, &l
);
1612 STRV_FOREACH(p
, l
) {
1613 if (!path_is_absolute(*p
))
1614 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Path specified in %s is not absolute: %s", name
, *p
);
1616 if (!UNIT_WRITE_FLAGS_NOOP(flags
)) {
1617 r
= unit_require_mounts_for(u
, *p
, UNIT_DEPENDENCY_FILE
);
1619 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Failed to add required mount \"%s\": %m", *p
);
1621 unit_write_settingf(u
, flags
, name
, "%s=%s", name
, *p
);
1628 if (streq(name
, "RequiresOverridable"))
1629 d
= UNIT_REQUIRES
; /* redirect for obsolete unit dependency type */
1630 else if (streq(name
, "RequisiteOverridable"))
1631 d
= UNIT_REQUISITE
; /* same here */
1633 d
= unit_dependency_from_string(name
);
1638 r
= sd_bus_message_enter_container(message
, 'a', "s");
1642 while ((r
= sd_bus_message_read(message
, "s", &other
)) > 0) {
1643 if (!unit_name_is_valid(other
, UNIT_NAME_PLAIN
|UNIT_NAME_INSTANCE
))
1644 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid unit name %s", other
);
1646 if (!UNIT_WRITE_FLAGS_NOOP(flags
)) {
1647 _cleanup_free_
char *label
= NULL
;
1649 r
= unit_add_dependency_by_name(u
, d
, other
, true, UNIT_DEPENDENCY_FILE
);
1653 label
= strjoin(name
, "-", other
);
1657 unit_write_settingf(u
, flags
, label
, "%s=%s", unit_dependency_to_string(d
), other
);
1664 r
= sd_bus_message_exit_container(message
);
1670 } else if (streq(name
, "AddRef")) {
1674 /* Why is this called "AddRef" rather than just "Ref", or "Reference"? There's already a "Ref()" method
1675 * on the Unit interface, and it's probably not a good idea to expose a property and a method on the
1676 * same interface (well, strictly speaking AddRef isn't exposed as full property, we just read it for
1677 * transient units, but still). And "References" and "ReferencedBy" is already used as unit reference
1678 * dependency type, hence let's not confuse things with that.
1680 * Note that we don't acually add the reference to the bus track. We do that only after the setup of
1681 * the transient unit is complete, so that setting this property multiple times in the same transient
1682 * unit creation call doesn't count as individual references. */
1684 r
= sd_bus_message_read(message
, "b", &b
);
1688 if (!UNIT_WRITE_FLAGS_NOOP(flags
))
1689 u
->bus_track_add
= b
;
1697 int bus_unit_set_properties(
1699 sd_bus_message
*message
,
1700 UnitWriteFlags flags
,
1702 sd_bus_error
*error
) {
1704 bool for_real
= false;
1711 /* We iterate through the array twice. First run we just check
1712 * if all passed data is valid, second run actually applies
1713 * it. This is to implement transaction-like behaviour without
1714 * actually providing full transactions. */
1716 r
= sd_bus_message_enter_container(message
, 'a', "(sv)");
1724 r
= sd_bus_message_enter_container(message
, 'r', "sv");
1728 if (for_real
|| UNIT_WRITE_FLAGS_NOOP(flags
))
1731 /* Reached EOF. Let's try again, and this time for realz... */
1732 r
= sd_bus_message_rewind(message
, false);
1740 r
= sd_bus_message_read(message
, "s", &name
);
1744 if (!UNIT_VTABLE(u
)->bus_set_property
)
1745 return sd_bus_error_setf(error
, SD_BUS_ERROR_PROPERTY_READ_ONLY
, "Objects of this type do not support setting properties.");
1747 r
= sd_bus_message_enter_container(message
, 'v', NULL
);
1751 /* If not for real, then mask out the two target flags */
1752 f
= for_real
? flags
: (flags
& ~(UNIT_RUNTIME
|UNIT_PERSISTENT
));
1754 r
= UNIT_VTABLE(u
)->bus_set_property(u
, name
, message
, f
, error
);
1755 if (r
== 0 && u
->transient
&& u
->load_state
== UNIT_STUB
)
1756 r
= bus_unit_set_transient_property(u
, name
, message
, f
, error
);
1758 r
= bus_unit_set_live_property(u
, name
, message
, f
, error
);
1763 return sd_bus_error_setf(error
, SD_BUS_ERROR_PROPERTY_READ_ONLY
, "Cannot set property %s, or unknown property.", name
);
1765 r
= sd_bus_message_exit_container(message
);
1769 r
= sd_bus_message_exit_container(message
);
1776 r
= sd_bus_message_exit_container(message
);
1780 if (commit
&& n
> 0 && UNIT_VTABLE(u
)->bus_commit_properties
)
1781 UNIT_VTABLE(u
)->bus_commit_properties(u
);
1786 int bus_unit_validate_load_state(Unit
*u
, sd_bus_error
*error
) {
1789 /* Generates a pretty error if a unit isn't properly loaded. */
1791 switch (u
->load_state
) {
1796 case UNIT_NOT_FOUND
:
1797 return sd_bus_error_setf(error
, BUS_ERROR_NO_SUCH_UNIT
, "Unit %s not found.", u
->id
);
1799 case UNIT_BAD_SETTING
:
1800 return sd_bus_error_setf(error
, BUS_ERROR_BAD_UNIT_SETTING
, "Unit %s has a bad unit file setting.", u
->id
);
1802 case UNIT_ERROR
: /* Only show .load_error in UNIT_ERROR state */
1803 return sd_bus_error_set_errnof(error
, u
->load_error
, "Unit %s failed to load properly: %m.", u
->id
);
1806 return sd_bus_error_setf(error
, BUS_ERROR_UNIT_MASKED
, "Unit %s is masked.", u
->id
);
1811 return sd_bus_error_setf(error
, BUS_ERROR_NO_SUCH_UNIT
, "Unexpected load state of unit %s", u
->id
);
1815 static int bus_unit_track_handler(sd_bus_track
*t
, void *userdata
) {
1821 u
->bus_track
= sd_bus_track_unref(u
->bus_track
); /* make sure we aren't called again */
1823 /* If the client that tracks us disappeared, then there's reason to believe that the cgroup is empty now too,
1825 unit_add_to_cgroup_empty_queue(u
);
1827 /* Also add the unit to the GC queue, after all if the client left it might be time to GC this unit */
1828 unit_add_to_gc_queue(u
);
1833 static int bus_unit_allocate_bus_track(Unit
*u
) {
1841 r
= sd_bus_track_new(u
->manager
->api_bus
, &u
->bus_track
, bus_unit_track_handler
, u
);
1845 r
= sd_bus_track_set_recursive(u
->bus_track
, true);
1847 u
->bus_track
= sd_bus_track_unref(u
->bus_track
);
1854 int bus_unit_track_add_name(Unit
*u
, const char *name
) {
1859 r
= bus_unit_allocate_bus_track(u
);
1863 return sd_bus_track_add_name(u
->bus_track
, name
);
1866 int bus_unit_track_add_sender(Unit
*u
, sd_bus_message
*m
) {
1871 r
= bus_unit_allocate_bus_track(u
);
1875 return sd_bus_track_add_sender(u
->bus_track
, m
);
1878 int bus_unit_track_remove_sender(Unit
*u
, sd_bus_message
*m
) {
1881 /* If we haven't allocated the bus track object yet, then there's definitely no reference taken yet, return an
1886 return sd_bus_track_remove_sender(u
->bus_track
, m
);