1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
25 #include "sd-messages.h"
36 #include "terminal-util.h"
38 Job
* job_new_raw(Unit
*unit
) {
41 /* used for deserialization */
49 j
->manager
= unit
->manager
;
51 j
->type
= _JOB_TYPE_INVALID
;
56 Job
* job_new(Unit
*unit
, JobType type
) {
59 assert(type
< _JOB_TYPE_MAX
);
61 j
= job_new_raw(unit
);
65 j
->id
= j
->manager
->current_job_id
++;
68 /* We don't link it here, that's what job_dependency() is for */
73 void job_free(Job
*j
) {
75 assert(!j
->installed
);
76 assert(!j
->transaction_prev
);
77 assert(!j
->transaction_next
);
78 assert(!j
->subject_list
);
79 assert(!j
->object_list
);
82 LIST_REMOVE(run_queue
, j
->manager
->run_queue
, j
);
85 LIST_REMOVE(dbus_queue
, j
->manager
->dbus_job_queue
, j
);
87 sd_event_source_unref(j
->timer_event_source
);
89 sd_bus_track_unref(j
->clients
);
90 strv_free(j
->deserialized_clients
);
95 static void job_set_state(Job
*j
, JobState state
) {
98 assert(state
< _JOB_STATE_MAX
);
100 if (j
->state
== state
)
108 if (j
->state
== JOB_RUNNING
)
109 j
->unit
->manager
->n_running_jobs
++;
111 assert(j
->state
== JOB_WAITING
);
112 assert(j
->unit
->manager
->n_running_jobs
> 0);
114 j
->unit
->manager
->n_running_jobs
--;
116 if (j
->unit
->manager
->n_running_jobs
<= 0)
117 j
->unit
->manager
->jobs_in_progress_event_source
= sd_event_source_unref(j
->unit
->manager
->jobs_in_progress_event_source
);
121 void job_uninstall(Job
*j
) {
124 assert(j
->installed
);
126 job_set_state(j
, JOB_WAITING
);
128 pj
= (j
->type
== JOB_NOP
) ? &j
->unit
->nop_job
: &j
->unit
->job
;
131 /* Detach from next 'bigger' objects */
133 /* daemon-reload should be transparent to job observers */
134 if (j
->manager
->n_reloading
<= 0)
135 bus_job_send_removed_signal(j
);
139 unit_add_to_gc_queue(j
->unit
);
141 hashmap_remove(j
->manager
->jobs
, UINT32_TO_PTR(j
->id
));
142 j
->installed
= false;
145 static bool job_type_allows_late_merge(JobType t
) {
146 /* Tells whether it is OK to merge a job of type 't' with an already
148 * Reloads cannot be merged this way. Think of the sequence:
149 * 1. Reload of a daemon is in progress; the daemon has already loaded
150 * its config file, but hasn't completed the reload operation yet.
151 * 2. Edit foo's config file.
152 * 3. Trigger another reload to have the daemon use the new config.
153 * Should the second reload job be merged into the first one, the daemon
154 * would not know about the new config.
155 * JOB_RESTART jobs on the other hand can be merged, because they get
156 * patched into JOB_START after stopping the unit. So if we see a
157 * JOB_RESTART running, it means the unit hasn't stopped yet and at
158 * this time the merge is still allowed. */
159 return t
!= JOB_RELOAD
;
162 static void job_merge_into_installed(Job
*j
, Job
*other
) {
163 assert(j
->installed
);
164 assert(j
->unit
== other
->unit
);
166 if (j
->type
!= JOB_NOP
)
167 job_type_merge_and_collapse(&j
->type
, other
->type
, j
->unit
);
169 assert(other
->type
== JOB_NOP
);
171 j
->override
= j
->override
|| other
->override
;
172 j
->irreversible
= j
->irreversible
|| other
->irreversible
;
173 j
->ignore_order
= j
->ignore_order
|| other
->ignore_order
;
176 Job
* job_install(Job
*j
) {
180 assert(!j
->installed
);
181 assert(j
->type
< _JOB_TYPE_MAX_IN_TRANSACTION
);
182 assert(j
->state
== JOB_WAITING
);
184 pj
= (j
->type
== JOB_NOP
) ? &j
->unit
->nop_job
: &j
->unit
->job
;
188 if (job_type_is_conflicting(uj
->type
, j
->type
))
189 job_finish_and_invalidate(uj
, JOB_CANCELED
, false);
191 /* not conflicting, i.e. mergeable */
193 if (uj
->state
== JOB_WAITING
||
194 (job_type_allows_late_merge(j
->type
) && job_type_is_superset(uj
->type
, j
->type
))) {
195 job_merge_into_installed(uj
, j
);
196 log_unit_debug(uj
->unit
,
197 "Merged into installed job %s/%s as %u",
198 uj
->unit
->id
, job_type_to_string(uj
->type
), (unsigned) uj
->id
);
201 /* already running and not safe to merge into */
202 /* Patch uj to become a merged job and re-run it. */
203 /* XXX It should be safer to queue j to run after uj finishes, but it is
204 * not currently possible to have more than one installed job per unit. */
205 job_merge_into_installed(uj
, j
);
206 log_unit_debug(uj
->unit
,
207 "Merged into running job, re-running: %s/%s as %u",
208 uj
->unit
->id
, job_type_to_string(uj
->type
), (unsigned) uj
->id
);
210 job_set_state(uj
, JOB_WAITING
);
216 /* Install the job */
220 j
->manager
->n_installed_jobs
++;
221 log_unit_debug(j
->unit
,
222 "Installed new job %s/%s as %u",
223 j
->unit
->id
, job_type_to_string(j
->type
), (unsigned) j
->id
);
227 int job_install_deserialized(Job
*j
) {
230 assert(!j
->installed
);
232 if (j
->type
< 0 || j
->type
>= _JOB_TYPE_MAX_IN_TRANSACTION
) {
233 log_debug("Invalid job type %s in deserialization.", strna(job_type_to_string(j
->type
)));
237 pj
= (j
->type
== JOB_NOP
) ? &j
->unit
->nop_job
: &j
->unit
->job
;
239 log_unit_debug(j
->unit
, "Unit already has a job installed. Not installing deserialized job.");
246 if (j
->state
== JOB_RUNNING
)
247 j
->unit
->manager
->n_running_jobs
++;
249 log_unit_debug(j
->unit
,
250 "Reinstalled deserialized job %s/%s as %u",
251 j
->unit
->id
, job_type_to_string(j
->type
), (unsigned) j
->id
);
255 JobDependency
* job_dependency_new(Job
*subject
, Job
*object
, bool matters
, bool conflicts
) {
260 /* Adds a new job link, which encodes that the 'subject' job
261 * needs the 'object' job in some way. If 'subject' is NULL
262 * this means the 'anchor' job (i.e. the one the user
263 * explicitly asked for) is the requester. */
265 if (!(l
= new0(JobDependency
, 1)))
268 l
->subject
= subject
;
270 l
->matters
= matters
;
271 l
->conflicts
= conflicts
;
274 LIST_PREPEND(subject
, subject
->subject_list
, l
);
276 LIST_PREPEND(object
, object
->object_list
, l
);
281 void job_dependency_free(JobDependency
*l
) {
285 LIST_REMOVE(subject
, l
->subject
->subject_list
, l
);
287 LIST_REMOVE(object
, l
->object
->object_list
, l
);
292 void job_dump(Job
*j
, FILE*f
, const char *prefix
) {
301 "%s\tAction: %s -> %s\n"
304 "%s\tIrreversible: %s\n",
306 prefix
, j
->unit
->id
, job_type_to_string(j
->type
),
307 prefix
, job_state_to_string(j
->state
),
308 prefix
, yes_no(j
->override
),
309 prefix
, yes_no(j
->irreversible
));
313 * Merging is commutative, so imagine the matrix as symmetric. We store only
314 * its lower triangle to avoid duplication. We don't store the main diagonal,
315 * because A merged with A is simply A.
317 * If the resulting type is collapsed immediately afterwards (to get rid of
318 * the JOB_RELOAD_OR_START, which lies outside the lookup function's domain),
319 * the following properties hold:
321 * Merging is associative! A merged with B, and then merged with C is the same
322 * as A merged with the result of B merged with C.
324 * Mergeability is transitive! If A can be merged with B and B with C then
327 * Also, if A merged with B cannot be merged with C, then either A or B cannot
328 * be merged with C either.
330 static const JobType job_merging_table
[] = {
331 /* What \ With * JOB_START JOB_VERIFY_ACTIVE JOB_STOP JOB_RELOAD */
332 /*********************************************************************************/
334 /*JOB_VERIFY_ACTIVE */ JOB_START
,
335 /*JOB_STOP */ -1, -1,
336 /*JOB_RELOAD */ JOB_RELOAD_OR_START
, JOB_RELOAD
, -1,
337 /*JOB_RESTART */ JOB_RESTART
, JOB_RESTART
, -1, JOB_RESTART
,
340 JobType
job_type_lookup_merge(JobType a
, JobType b
) {
341 assert_cc(ELEMENTSOF(job_merging_table
) == _JOB_TYPE_MAX_MERGING
* (_JOB_TYPE_MAX_MERGING
- 1) / 2);
342 assert(a
>= 0 && a
< _JOB_TYPE_MAX_MERGING
);
343 assert(b
>= 0 && b
< _JOB_TYPE_MAX_MERGING
);
354 return job_merging_table
[(a
- 1) * a
/ 2 + b
];
357 bool job_type_is_redundant(JobType a
, UnitActiveState b
) {
367 b
== UNIT_INACTIVE
||
370 case JOB_VERIFY_ACTIVE
:
381 b
== UNIT_ACTIVATING
;
387 assert_not_reached("Invalid job type");
391 JobType
job_type_collapse(JobType t
, Unit
*u
) {
396 case JOB_TRY_RESTART
:
397 s
= unit_active_state(u
);
398 if (UNIT_IS_INACTIVE_OR_DEACTIVATING(s
))
403 case JOB_RELOAD_OR_START
:
404 s
= unit_active_state(u
);
405 if (UNIT_IS_INACTIVE_OR_DEACTIVATING(s
))
415 int job_type_merge_and_collapse(JobType
*a
, JobType b
, Unit
*u
) {
418 t
= job_type_lookup_merge(*a
, b
);
422 *a
= job_type_collapse(t
, u
);
426 static bool job_is_runnable(Job
*j
) {
431 assert(j
->installed
);
433 /* Checks whether there is any job running for the units this
434 * job needs to be running after (in the case of a 'positive'
435 * job type) or before (in the case of a 'negative' job
438 /* Note that unit types have a say in what is runnable,
439 * too. For example, if they return -EAGAIN from
440 * unit_start() they can indicate they are not
443 /* First check if there is an override */
447 if (j
->type
== JOB_NOP
)
450 if (j
->type
== JOB_START
||
451 j
->type
== JOB_VERIFY_ACTIVE
||
452 j
->type
== JOB_RELOAD
) {
454 /* Immediate result is that the job is or might be
455 * started. In this case let's wait for the
456 * dependencies, regardless whether they are
457 * starting or stopping something. */
459 SET_FOREACH(other
, j
->unit
->dependencies
[UNIT_AFTER
], i
)
464 /* Also, if something else is being stopped and we should
465 * change state after it, then let's wait. */
467 SET_FOREACH(other
, j
->unit
->dependencies
[UNIT_BEFORE
], i
)
469 (other
->job
->type
== JOB_STOP
||
470 other
->job
->type
== JOB_RESTART
))
473 /* This means that for a service a and a service b where b
474 * shall be started after a:
476 * start a + start b → 1st step start a, 2nd step start b
477 * start a + stop b → 1st step stop b, 2nd step start a
478 * stop a + start b → 1st step stop a, 2nd step start b
479 * stop a + stop b → 1st step stop b, 2nd step stop a
481 * This has the side effect that restarts are properly
482 * synchronized too. */
487 static void job_change_type(Job
*j
, JobType newtype
) {
490 log_unit_debug(j
->unit
,
491 "Converting job %s/%s -> %s/%s",
492 j
->unit
->id
, job_type_to_string(j
->type
),
493 j
->unit
->id
, job_type_to_string(newtype
));
498 static int job_perform_on_unit(Job
**j
) {
499 /* While we execute this operation the job might go away (for
500 * example: because it finishes immediately or is replaced by a new,
501 * conflicting job.) To make sure we don't access a freed job later on
502 * we store the id here, so that we can verify the job is still
504 Manager
*m
= (*j
)->manager
;
505 Unit
*u
= (*j
)->unit
;
506 JobType t
= (*j
)->type
;
507 uint32_t id
= (*j
)->id
;
526 assert_not_reached("Invalid job type");
529 /* Log if the job still exists and the start/stop/reload function
530 * actually did something. */
531 *j
= manager_get_job(m
, id
);
533 unit_status_emit_starting_stopping_reloading(u
, t
);
538 int job_run_and_invalidate(Job
*j
) {
542 assert(j
->installed
);
543 assert(j
->type
< _JOB_TYPE_MAX_IN_TRANSACTION
);
544 assert(j
->in_run_queue
);
546 LIST_REMOVE(run_queue
, j
->manager
->run_queue
, j
);
547 j
->in_run_queue
= false;
549 if (j
->state
!= JOB_WAITING
)
552 if (!job_is_runnable(j
))
555 job_set_state(j
, JOB_RUNNING
);
556 job_add_to_dbus_queue(j
);
561 case JOB_VERIFY_ACTIVE
: {
562 UnitActiveState t
= unit_active_state(j
->unit
);
563 if (UNIT_IS_ACTIVE_OR_RELOADING(t
))
565 else if (t
== UNIT_ACTIVATING
)
575 r
= job_perform_on_unit(&j
);
577 /* If the unit type does not support starting/stopping,
578 * then simply wait. */
584 r
= job_perform_on_unit(&j
);
592 assert_not_reached("Unknown job type");
597 r
= job_finish_and_invalidate(j
, JOB_DONE
, true);
598 else if (r
== -EBADR
)
599 r
= job_finish_and_invalidate(j
, JOB_SKIPPED
, true);
600 else if (r
== -ENOEXEC
)
601 r
= job_finish_and_invalidate(j
, JOB_INVALID
, true);
602 else if (r
== -EPROTO
)
603 r
= job_finish_and_invalidate(j
, JOB_ASSERT
, true);
604 else if (r
== -EOPNOTSUPP
)
605 r
= job_finish_and_invalidate(j
, JOB_UNSUPPORTED
, true);
606 else if (r
== -EAGAIN
)
607 job_set_state(j
, JOB_WAITING
);
609 r
= job_finish_and_invalidate(j
, JOB_FAILED
, true);
615 _pure_
static const char *job_get_status_message_format(Unit
*u
, JobType t
, JobResult result
) {
617 const UnitStatusMessageFormats
*format_table
;
618 static const char *const generic_finished_start_job
[_JOB_RESULT_MAX
] = {
619 [JOB_DONE
] = "Started %s.",
620 [JOB_TIMEOUT
] = "Timed out starting %s.",
621 [JOB_FAILED
] = "Failed to start %s.",
622 [JOB_DEPENDENCY
] = "Dependency failed for %s.",
623 [JOB_ASSERT
] = "Assertion failed for %s.",
624 [JOB_UNSUPPORTED
] = "Starting of %s not supported.",
626 static const char *const generic_finished_stop_job
[_JOB_RESULT_MAX
] = {
627 [JOB_DONE
] = "Stopped %s.",
628 [JOB_FAILED
] = "Stopped (with error) %s.",
629 [JOB_TIMEOUT
] = "Timed out stoppping %s.",
631 static const char *const generic_finished_reload_job
[_JOB_RESULT_MAX
] = {
632 [JOB_DONE
] = "Reloaded %s.",
633 [JOB_FAILED
] = "Reload failed for %s.",
634 [JOB_TIMEOUT
] = "Timed out reloading %s.",
636 /* When verify-active detects the unit is inactive, report it.
637 * Most likely a DEPEND warning from a requisiting unit will
638 * occur next and it's nice to see what was requisited. */
639 static const char *const generic_finished_verify_active_job
[_JOB_RESULT_MAX
] = {
640 [JOB_SKIPPED
] = "%s is not active.",
645 assert(t
< _JOB_TYPE_MAX
);
647 if (t
== JOB_START
|| t
== JOB_STOP
|| t
== JOB_RESTART
) {
648 format_table
= &UNIT_VTABLE(u
)->status_message_formats
;
650 format
= t
== JOB_START
? format_table
->finished_start_job
[result
] :
651 format_table
->finished_stop_job
[result
];
657 /* Return generic strings */
659 return generic_finished_start_job
[result
];
660 else if (t
== JOB_STOP
|| t
== JOB_RESTART
)
661 return generic_finished_stop_job
[result
];
662 else if (t
== JOB_RELOAD
)
663 return generic_finished_reload_job
[result
];
664 else if (t
== JOB_VERIFY_ACTIVE
)
665 return generic_finished_verify_active_job
[result
];
670 static void job_print_status_message(Unit
*u
, JobType t
, JobResult result
) {
672 static const char* const job_result_status_table
[_JOB_RESULT_MAX
] = {
673 [JOB_DONE
] = ANSI_GREEN_ON
" OK " ANSI_HIGHLIGHT_OFF
,
674 [JOB_TIMEOUT
] = ANSI_HIGHLIGHT_RED_ON
" TIME " ANSI_HIGHLIGHT_OFF
,
675 [JOB_FAILED
] = ANSI_HIGHLIGHT_RED_ON
"FAILED" ANSI_HIGHLIGHT_OFF
,
676 [JOB_DEPENDENCY
] = ANSI_HIGHLIGHT_YELLOW_ON
"DEPEND" ANSI_HIGHLIGHT_OFF
,
677 [JOB_SKIPPED
] = ANSI_HIGHLIGHT_ON
" INFO " ANSI_HIGHLIGHT_OFF
,
678 [JOB_ASSERT
] = ANSI_HIGHLIGHT_YELLOW_ON
"ASSERT" ANSI_HIGHLIGHT_OFF
,
679 [JOB_UNSUPPORTED
] = ANSI_HIGHLIGHT_YELLOW_ON
"UNSUPP" ANSI_HIGHLIGHT_OFF
,
684 assert(t
< _JOB_TYPE_MAX
);
686 format
= job_get_status_message_format(u
, t
, result
);
690 if (result
!= JOB_DONE
)
691 manager_flip_auto_status(u
->manager
, true);
693 DISABLE_WARNING_FORMAT_NONLITERAL
;
694 unit_status_printf(u
, job_result_status_table
[result
], format
);
697 if (t
== JOB_START
&& result
== JOB_FAILED
) {
698 _cleanup_free_
char *quoted
= shell_maybe_quote(u
->id
);
700 manager_status_printf(u
->manager
, STATUS_TYPE_NORMAL
, NULL
,
701 "See 'systemctl status %s' for details.", strna(quoted
));
705 static void job_log_status_message(Unit
*u
, JobType t
, JobResult result
) {
709 static const int job_result_log_level
[_JOB_RESULT_MAX
] = {
710 [JOB_DONE
] = LOG_INFO
,
711 [JOB_CANCELED
] = LOG_INFO
,
712 [JOB_TIMEOUT
] = LOG_ERR
,
713 [JOB_FAILED
] = LOG_ERR
,
714 [JOB_DEPENDENCY
] = LOG_WARNING
,
715 [JOB_SKIPPED
] = LOG_NOTICE
,
716 [JOB_INVALID
] = LOG_INFO
,
717 [JOB_ASSERT
] = LOG_WARNING
,
718 [JOB_UNSUPPORTED
] = LOG_WARNING
,
723 assert(t
< _JOB_TYPE_MAX
);
725 /* Skip this if it goes to the console. since we already print
726 * to the console anyway... */
728 if (log_on_console())
731 format
= job_get_status_message_format(u
, t
, result
);
735 DISABLE_WARNING_FORMAT_NONLITERAL
;
736 snprintf(buf
, sizeof(buf
), format
, unit_description(u
));
740 mid
= result
== JOB_DONE
? SD_MESSAGE_UNIT_STARTED
: SD_MESSAGE_UNIT_FAILED
;
741 else if (t
== JOB_STOP
|| t
== JOB_RESTART
)
742 mid
= SD_MESSAGE_UNIT_STOPPED
;
743 else if (t
== JOB_RELOAD
)
744 mid
= SD_MESSAGE_UNIT_RELOADED
;
746 log_struct(job_result_log_level
[result
],
748 LOG_MESSAGE("%s", buf
),
749 "RESULT=%s", job_result_to_string(result
),
754 log_struct(job_result_log_level
[result
],
757 LOG_MESSAGE("%s", buf
),
758 "RESULT=%s", job_result_to_string(result
),
762 static void job_emit_status_message(Unit
*u
, JobType t
, JobResult result
) {
764 /* No message if the job did not actually do anything due to failed condition. */
765 if (t
== JOB_START
&& result
== JOB_DONE
&& !u
->condition_result
)
768 job_log_status_message(u
, t
, result
);
770 /* Reload status messages have traditionally not been printed to console. */
772 job_print_status_message(u
, t
, result
);
775 static void job_fail_dependencies(Unit
*u
, UnitDependency d
) {
781 SET_FOREACH(other
, u
->dependencies
[d
], i
) {
786 if (!IN_SET(j
->type
, JOB_START
, JOB_VERIFY_ACTIVE
))
789 job_finish_and_invalidate(j
, JOB_DEPENDENCY
, true);
793 int job_finish_and_invalidate(Job
*j
, JobResult result
, bool recursive
) {
800 assert(j
->installed
);
801 assert(j
->type
< _JOB_TYPE_MAX_IN_TRANSACTION
);
808 log_unit_debug(u
, "Job %s/%s finished, result=%s", u
->id
, job_type_to_string(t
), job_result_to_string(result
));
810 job_emit_status_message(u
, t
, result
);
812 job_add_to_dbus_queue(j
);
814 /* Patch restart jobs so that they become normal start jobs */
815 if (result
== JOB_DONE
&& t
== JOB_RESTART
) {
817 job_change_type(j
, JOB_START
);
818 job_set_state(j
, JOB_WAITING
);
820 job_add_to_run_queue(j
);
825 if (result
== JOB_FAILED
|| result
== JOB_INVALID
)
826 j
->manager
->n_failed_jobs
++;
831 /* Fail depending jobs on failure */
832 if (result
!= JOB_DONE
&& recursive
) {
833 if (IN_SET(t
, JOB_START
, JOB_VERIFY_ACTIVE
)) {
834 job_fail_dependencies(u
, UNIT_REQUIRED_BY
);
835 job_fail_dependencies(u
, UNIT_REQUISITE_OF
);
836 job_fail_dependencies(u
, UNIT_BOUND_BY
);
837 job_fail_dependencies(u
, UNIT_REQUIRED_BY_OVERRIDABLE
);
838 job_fail_dependencies(u
, UNIT_REQUISITE_OF_OVERRIDABLE
);
839 } else if (t
== JOB_STOP
)
840 job_fail_dependencies(u
, UNIT_CONFLICTED_BY
);
843 /* Trigger OnFailure dependencies that are not generated by
844 * the unit itself. We don't treat JOB_CANCELED as failure in
845 * this context. And JOB_FAILURE is already handled by the
847 if (result
== JOB_TIMEOUT
|| result
== JOB_DEPENDENCY
) {
848 log_struct(LOG_NOTICE
,
849 "JOB_TYPE=%s", job_type_to_string(t
),
850 "JOB_RESULT=%s", job_result_to_string(result
),
852 LOG_UNIT_MESSAGE(u
, "Job %s/%s failed with result '%s'.",
854 job_type_to_string(t
),
855 job_result_to_string(result
)),
858 unit_start_on_failure(u
);
861 unit_trigger_notify(u
);
864 /* Try to start the next jobs that can be started */
865 SET_FOREACH(other
, u
->dependencies
[UNIT_AFTER
], i
)
867 job_add_to_run_queue(other
->job
);
868 SET_FOREACH(other
, u
->dependencies
[UNIT_BEFORE
], i
)
870 job_add_to_run_queue(other
->job
);
872 manager_check_finished(u
->manager
);
877 static int job_dispatch_timer(sd_event_source
*s
, uint64_t monotonic
, void *userdata
) {
882 assert(s
== j
->timer_event_source
);
884 log_unit_warning(j
->unit
, "Job %s/%s timed out.", j
->unit
->id
, job_type_to_string(j
->type
));
887 job_finish_and_invalidate(j
, JOB_TIMEOUT
, true);
889 failure_action(u
->manager
, u
->job_timeout_action
, u
->job_timeout_reboot_arg
);
894 int job_start_timer(Job
*j
) {
897 if (j
->timer_event_source
)
900 j
->begin_usec
= now(CLOCK_MONOTONIC
);
902 if (j
->unit
->job_timeout
<= 0)
905 r
= sd_event_add_time(
907 &j
->timer_event_source
,
909 j
->begin_usec
+ j
->unit
->job_timeout
, 0,
910 job_dispatch_timer
, j
);
914 (void) sd_event_source_set_description(j
->timer_event_source
, "job-start");
919 void job_add_to_run_queue(Job
*j
) {
921 assert(j
->installed
);
926 if (!j
->manager
->run_queue
)
927 sd_event_source_set_enabled(j
->manager
->run_queue_event_source
, SD_EVENT_ONESHOT
);
929 LIST_PREPEND(run_queue
, j
->manager
->run_queue
, j
);
930 j
->in_run_queue
= true;
933 void job_add_to_dbus_queue(Job
*j
) {
935 assert(j
->installed
);
937 if (j
->in_dbus_queue
)
940 /* We don't check if anybody is subscribed here, since this
941 * job might just have been created and not yet assigned to a
942 * connection/client. */
944 LIST_PREPEND(dbus_queue
, j
->manager
->dbus_job_queue
, j
);
945 j
->in_dbus_queue
= true;
948 char *job_dbus_path(Job
*j
) {
953 if (asprintf(&p
, "/org/freedesktop/systemd1/job/%"PRIu32
, j
->id
) < 0)
959 int job_serialize(Job
*j
, FILE *f
, FDSet
*fds
) {
960 fprintf(f
, "job-id=%u\n", j
->id
);
961 fprintf(f
, "job-type=%s\n", job_type_to_string(j
->type
));
962 fprintf(f
, "job-state=%s\n", job_state_to_string(j
->state
));
963 fprintf(f
, "job-override=%s\n", yes_no(j
->override
));
964 fprintf(f
, "job-irreversible=%s\n", yes_no(j
->irreversible
));
965 fprintf(f
, "job-sent-dbus-new-signal=%s\n", yes_no(j
->sent_dbus_new_signal
));
966 fprintf(f
, "job-ignore-order=%s\n", yes_no(j
->ignore_order
));
968 if (j
->begin_usec
> 0)
969 fprintf(f
, "job-begin="USEC_FMT
"\n", j
->begin_usec
);
971 bus_track_serialize(j
->clients
, f
);
978 int job_deserialize(Job
*j
, FILE *f
, FDSet
*fds
) {
982 char line
[LINE_MAX
], *l
, *v
;
985 if (!fgets(line
, sizeof(line
), f
)) {
1006 if (streq(l
, "job-id")) {
1008 if (safe_atou32(v
, &j
->id
) < 0)
1009 log_debug("Failed to parse job id value %s", v
);
1011 } else if (streq(l
, "job-type")) {
1014 t
= job_type_from_string(v
);
1016 log_debug("Failed to parse job type %s", v
);
1017 else if (t
>= _JOB_TYPE_MAX_IN_TRANSACTION
)
1018 log_debug("Cannot deserialize job of type %s", v
);
1022 } else if (streq(l
, "job-state")) {
1025 s
= job_state_from_string(v
);
1027 log_debug("Failed to parse job state %s", v
);
1029 job_set_state(j
, s
);
1031 } else if (streq(l
, "job-override")) {
1034 b
= parse_boolean(v
);
1036 log_debug("Failed to parse job override flag %s", v
);
1038 j
->override
= j
->override
|| b
;
1040 } else if (streq(l
, "job-irreversible")) {
1043 b
= parse_boolean(v
);
1045 log_debug("Failed to parse job irreversible flag %s", v
);
1047 j
->irreversible
= j
->irreversible
|| b
;
1049 } else if (streq(l
, "job-sent-dbus-new-signal")) {
1052 b
= parse_boolean(v
);
1054 log_debug("Failed to parse job sent_dbus_new_signal flag %s", v
);
1056 j
->sent_dbus_new_signal
= j
->sent_dbus_new_signal
|| b
;
1058 } else if (streq(l
, "job-ignore-order")) {
1061 b
= parse_boolean(v
);
1063 log_debug("Failed to parse job ignore_order flag %s", v
);
1065 j
->ignore_order
= j
->ignore_order
|| b
;
1067 } else if (streq(l
, "job-begin")) {
1068 unsigned long long ull
;
1070 if (sscanf(v
, "%llu", &ull
) != 1)
1071 log_debug("Failed to parse job-begin value %s", v
);
1073 j
->begin_usec
= ull
;
1075 } else if (streq(l
, "subscribed")) {
1077 if (strv_extend(&j
->deserialized_clients
, v
) < 0)
1083 int job_coldplug(Job
*j
) {
1088 /* After deserialization is complete and the bus connection
1089 * set up again, let's start watching our subscribers again */
1090 r
= bus_track_coldplug(j
->manager
, &j
->clients
, &j
->deserialized_clients
);
1094 if (j
->state
== JOB_WAITING
)
1095 job_add_to_run_queue(j
);
1097 if (j
->begin_usec
== 0 || j
->unit
->job_timeout
== 0)
1100 if (j
->timer_event_source
)
1101 j
->timer_event_source
= sd_event_source_unref(j
->timer_event_source
);
1103 r
= sd_event_add_time(
1105 &j
->timer_event_source
,
1107 j
->begin_usec
+ j
->unit
->job_timeout
, 0,
1108 job_dispatch_timer
, j
);
1110 log_debug_errno(r
, "Failed to restart timeout for job: %m");
1112 (void) sd_event_source_set_description(j
->timer_event_source
, "job-timeout");
1117 void job_shutdown_magic(Job
*j
) {
1120 /* The shutdown target gets some special treatment here: we
1121 * tell the kernel to begin with flushing its disk caches, to
1122 * optimize shutdown time a bit. Ideally we wouldn't hardcode
1123 * this magic into PID 1. However all other processes aren't
1124 * options either since they'd exit much sooner than PID 1 and
1125 * asynchronous sync() would cause their exit to be
1128 if (j
->type
!= JOB_START
)
1131 if (j
->unit
->manager
->running_as
!= MANAGER_SYSTEM
)
1134 if (!unit_has_name(j
->unit
, SPECIAL_SHUTDOWN_TARGET
))
1137 /* In case messages on console has been disabled on boot */
1138 j
->unit
->manager
->no_console_output
= false;
1140 if (detect_container() > 0)
1143 asynchronous_sync();
1146 int job_get_timeout(Job
*j
, uint64_t *timeout
) {
1148 uint64_t x
= -1, y
= -1;
1153 if (j
->timer_event_source
) {
1154 r
= sd_event_source_get_time(j
->timer_event_source
, &x
);
1160 if (UNIT_VTABLE(u
)->get_timeout
) {
1161 q
= UNIT_VTABLE(u
)->get_timeout(u
, &y
);
1166 if (r
== 0 && q
== 0)
1169 *timeout
= MIN(x
, y
);
1174 static const char* const job_state_table
[_JOB_STATE_MAX
] = {
1175 [JOB_WAITING
] = "waiting",
1176 [JOB_RUNNING
] = "running"
1179 DEFINE_STRING_TABLE_LOOKUP(job_state
, JobState
);
1181 static const char* const job_type_table
[_JOB_TYPE_MAX
] = {
1182 [JOB_START
] = "start",
1183 [JOB_VERIFY_ACTIVE
] = "verify-active",
1184 [JOB_STOP
] = "stop",
1185 [JOB_RELOAD
] = "reload",
1186 [JOB_RELOAD_OR_START
] = "reload-or-start",
1187 [JOB_RESTART
] = "restart",
1188 [JOB_TRY_RESTART
] = "try-restart",
1192 DEFINE_STRING_TABLE_LOOKUP(job_type
, JobType
);
1194 static const char* const job_mode_table
[_JOB_MODE_MAX
] = {
1195 [JOB_FAIL
] = "fail",
1196 [JOB_REPLACE
] = "replace",
1197 [JOB_REPLACE_IRREVERSIBLY
] = "replace-irreversibly",
1198 [JOB_ISOLATE
] = "isolate",
1199 [JOB_FLUSH
] = "flush",
1200 [JOB_IGNORE_DEPENDENCIES
] = "ignore-dependencies",
1201 [JOB_IGNORE_REQUIREMENTS
] = "ignore-requirements",
1204 DEFINE_STRING_TABLE_LOOKUP(job_mode
, JobMode
);
1206 static const char* const job_result_table
[_JOB_RESULT_MAX
] = {
1207 [JOB_DONE
] = "done",
1208 [JOB_CANCELED
] = "canceled",
1209 [JOB_TIMEOUT
] = "timeout",
1210 [JOB_FAILED
] = "failed",
1211 [JOB_DEPENDENCY
] = "dependency",
1212 [JOB_SKIPPED
] = "skipped",
1213 [JOB_INVALID
] = "invalid",
1214 [JOB_ASSERT
] = "assert",
1215 [JOB_UNSUPPORTED
] = "unsupported",
1218 DEFINE_STRING_TABLE_LOOKUP(job_result
, JobResult
);