1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
6 #include "sd-messages.h"
8 #include "alloc-util.h"
18 #include "parse-util.h"
19 #include "serialize.h"
21 #include "sort-util.h"
23 #include "stdio-util.h"
24 #include "string-table.h"
25 #include "string-util.h"
27 #include "terminal-util.h"
31 Job
* job_new_raw(Unit
*unit
) {
34 /* used for deserialization */
43 .manager
= unit
->manager
,
45 .type
= _JOB_TYPE_INVALID
,
51 Job
* job_new(Unit
*unit
, JobType type
) {
54 assert(type
< _JOB_TYPE_MAX
);
56 j
= job_new_raw(unit
);
60 j
->id
= j
->manager
->current_job_id
++;
63 /* We don't link it here, that's what job_dependency() is for */
68 void job_unlink(Job
*j
) {
70 assert(!j
->installed
);
71 assert(!j
->transaction_prev
);
72 assert(!j
->transaction_next
);
73 assert(!j
->subject_list
);
74 assert(!j
->object_list
);
76 if (j
->in_run_queue
) {
77 prioq_remove(j
->manager
->run_queue
, j
, &j
->run_queue_idx
);
78 j
->in_run_queue
= false;
81 if (j
->in_dbus_queue
) {
82 LIST_REMOVE(dbus_queue
, j
->manager
->dbus_job_queue
, j
);
83 j
->in_dbus_queue
= false;
87 LIST_REMOVE(gc_queue
, j
->manager
->gc_job_queue
, j
);
88 j
->in_gc_queue
= false;
91 j
->timer_event_source
= sd_event_source_unref(j
->timer_event_source
);
94 Job
* job_free(Job
*j
) {
96 assert(!j
->installed
);
97 assert(!j
->transaction_prev
);
98 assert(!j
->transaction_next
);
99 assert(!j
->subject_list
);
100 assert(!j
->object_list
);
104 sd_bus_track_unref(j
->bus_track
);
105 strv_free(j
->deserialized_clients
);
110 static void job_set_state(Job
*j
, JobState state
) {
113 assert(state
< _JOB_STATE_MAX
);
115 if (j
->state
== state
)
123 if (j
->state
== JOB_RUNNING
)
124 j
->unit
->manager
->n_running_jobs
++;
126 assert(j
->state
== JOB_WAITING
);
127 assert(j
->unit
->manager
->n_running_jobs
> 0);
129 j
->unit
->manager
->n_running_jobs
--;
131 if (j
->unit
->manager
->n_running_jobs
<= 0)
132 j
->unit
->manager
->jobs_in_progress_event_source
= sd_event_source_unref(j
->unit
->manager
->jobs_in_progress_event_source
);
136 void job_uninstall(Job
*j
) {
139 assert(j
->installed
);
141 job_set_state(j
, JOB_WAITING
);
143 pj
= (j
->type
== JOB_NOP
) ? &j
->unit
->nop_job
: &j
->unit
->job
;
146 /* Detach from next 'bigger' objects */
148 /* daemon-reload should be transparent to job observers */
149 if (!MANAGER_IS_RELOADING(j
->manager
))
150 bus_job_send_removed_signal(j
);
154 unit_add_to_gc_queue(j
->unit
);
156 unit_add_to_dbus_queue(j
->unit
); /* The Job property of the unit has changed now */
158 hashmap_remove_value(j
->manager
->jobs
, UINT32_TO_PTR(j
->id
), j
);
159 j
->installed
= false;
162 static bool job_type_allows_late_merge(JobType t
) {
163 /* Tells whether it is OK to merge a job of type 't' with an already
165 * Reloads cannot be merged this way. Think of the sequence:
166 * 1. Reload of a daemon is in progress; the daemon has already loaded
167 * its config file, but hasn't completed the reload operation yet.
168 * 2. Edit foo's config file.
169 * 3. Trigger another reload to have the daemon use the new config.
170 * Should the second reload job be merged into the first one, the daemon
171 * would not know about the new config.
172 * JOB_RESTART jobs on the other hand can be merged, because they get
173 * patched into JOB_START after stopping the unit. So if we see a
174 * JOB_RESTART running, it means the unit hasn't stopped yet and at
175 * this time the merge is still allowed. */
176 return t
!= JOB_RELOAD
;
179 static void job_merge_into_installed(Job
*j
, Job
*other
) {
180 assert(j
->installed
);
181 assert(j
->unit
== other
->unit
);
183 if (j
->type
!= JOB_NOP
)
184 assert_se(job_type_merge_and_collapse(&j
->type
, other
->type
, j
->unit
) == 0);
186 assert(other
->type
== JOB_NOP
);
188 j
->irreversible
= j
->irreversible
|| other
->irreversible
;
189 j
->ignore_order
= j
->ignore_order
|| other
->ignore_order
;
192 Job
* job_install(Job
*j
) {
196 assert(!j
->installed
);
197 assert(j
->type
< _JOB_TYPE_MAX_IN_TRANSACTION
);
198 assert(j
->state
== JOB_WAITING
);
200 pj
= (j
->type
== JOB_NOP
) ? &j
->unit
->nop_job
: &j
->unit
->job
;
204 if (job_type_is_conflicting(uj
->type
, j
->type
))
205 job_finish_and_invalidate(uj
, JOB_CANCELED
, false, false);
207 /* not conflicting, i.e. mergeable */
209 if (uj
->state
== JOB_WAITING
||
210 (job_type_allows_late_merge(j
->type
) && job_type_is_superset(uj
->type
, j
->type
))) {
211 job_merge_into_installed(uj
, j
);
212 log_unit_debug(uj
->unit
,
213 "Merged %s/%s into installed job %s/%s as %"PRIu32
,
214 j
->unit
->id
, job_type_to_string(j
->type
), uj
->unit
->id
,
215 job_type_to_string(uj
->type
), uj
->id
);
218 /* already running and not safe to merge into */
219 /* Patch uj to become a merged job and re-run it. */
220 /* XXX It should be safer to queue j to run after uj finishes, but it is
221 * not currently possible to have more than one installed job per unit. */
222 job_merge_into_installed(uj
, j
);
223 log_unit_debug(uj
->unit
,
224 "Merged into running job, re-running: %s/%s as %"PRIu32
,
225 uj
->unit
->id
, job_type_to_string(uj
->type
), uj
->id
);
227 job_set_state(uj
, JOB_WAITING
);
233 /* Install the job */
237 j
->manager
->n_installed_jobs
++;
238 log_unit_debug(j
->unit
,
239 "Installed new job %s/%s as %u",
240 j
->unit
->id
, job_type_to_string(j
->type
), (unsigned) j
->id
);
242 job_add_to_gc_queue(j
);
244 job_add_to_dbus_queue(j
); /* announce this job to clients */
245 unit_add_to_dbus_queue(j
->unit
); /* The Job property of the unit has changed now */
250 int job_install_deserialized(Job
*j
) {
254 assert(!j
->installed
);
256 if (j
->type
< 0 || j
->type
>= _JOB_TYPE_MAX_IN_TRANSACTION
)
257 return log_unit_debug_errno(j
->unit
, SYNTHETIC_ERRNO(EINVAL
),
258 "Invalid job type %s in deserialization.",
259 strna(job_type_to_string(j
->type
)));
261 pj
= (j
->type
== JOB_NOP
) ? &j
->unit
->nop_job
: &j
->unit
->job
;
263 return log_unit_debug_errno(j
->unit
, SYNTHETIC_ERRNO(EEXIST
),
264 "Unit already has a job installed. Not installing deserialized job.");
266 r
= hashmap_ensure_put(&j
->manager
->jobs
, NULL
, UINT32_TO_PTR(j
->id
), j
);
268 return log_unit_debug_errno(j
->unit
, r
, "Job ID %" PRIu32
" already used, cannot deserialize job.", j
->id
);
270 return log_unit_debug_errno(j
->unit
, r
, "Failed to insert job into jobs hash table: %m");
275 if (j
->state
== JOB_RUNNING
)
276 j
->unit
->manager
->n_running_jobs
++;
278 log_unit_debug(j
->unit
,
279 "Reinstalled deserialized job %s/%s as %u",
280 j
->unit
->id
, job_type_to_string(j
->type
), (unsigned) j
->id
);
284 JobDependency
* job_dependency_new(Job
*subject
, Job
*object
, bool matters
, bool conflicts
) {
289 /* Adds a new job link, which encodes that the 'subject' job
290 * needs the 'object' job in some way. If 'subject' is NULL
291 * this means the 'anchor' job (i.e. the one the user
292 * explicitly asked for) is the requester. */
294 l
= new0(JobDependency
, 1);
298 l
->subject
= subject
;
300 l
->matters
= matters
;
301 l
->conflicts
= conflicts
;
304 LIST_PREPEND(subject
, subject
->subject_list
, l
);
306 LIST_PREPEND(object
, object
->object_list
, l
);
311 void job_dependency_free(JobDependency
*l
) {
315 LIST_REMOVE(subject
, l
->subject
->subject_list
, l
);
317 LIST_REMOVE(object
, l
->object
->object_list
, l
);
322 void job_dump(Job
*j
, FILE *f
, const char *prefix
) {
326 prefix
= strempty(prefix
);
330 "%s\tAction: %s -> %s\n"
332 "%s\tIrreversible: %s\n"
335 prefix
, j
->unit
->id
, job_type_to_string(j
->type
),
336 prefix
, job_state_to_string(j
->state
),
337 prefix
, yes_no(j
->irreversible
),
338 prefix
, yes_no(job_may_gc(j
)));
342 * Merging is commutative, so imagine the matrix as symmetric. We store only
343 * its lower triangle to avoid duplication. We don't store the main diagonal,
344 * because A merged with A is simply A.
346 * If the resulting type is collapsed immediately afterwards (to get rid of
347 * the JOB_RELOAD_OR_START, which lies outside the lookup function's domain),
348 * the following properties hold:
350 * Merging is associative! A merged with B, and then merged with C is the same
351 * as A merged with the result of B merged with C.
353 * Mergeability is transitive! If A can be merged with B and B with C then
356 * Also, if A merged with B cannot be merged with C, then either A or B cannot
357 * be merged with C either.
359 static const JobType job_merging_table
[] = {
360 /* What \ With * JOB_START JOB_VERIFY_ACTIVE JOB_STOP JOB_RELOAD */
361 /*********************************************************************************/
363 /*JOB_VERIFY_ACTIVE */ JOB_START
,
364 /*JOB_STOP */ -1, -1,
365 /*JOB_RELOAD */ JOB_RELOAD_OR_START
, JOB_RELOAD
, -1,
366 /*JOB_RESTART */ JOB_RESTART
, JOB_RESTART
, -1, JOB_RESTART
,
369 JobType
job_type_lookup_merge(JobType a
, JobType b
) {
370 assert_cc(ELEMENTSOF(job_merging_table
) == _JOB_TYPE_MAX_MERGING
* (_JOB_TYPE_MAX_MERGING
- 1) / 2);
371 assert(a
>= 0 && a
< _JOB_TYPE_MAX_MERGING
);
372 assert(b
>= 0 && b
< _JOB_TYPE_MAX_MERGING
);
383 return job_merging_table
[(a
- 1) * a
/ 2 + b
];
386 bool job_type_is_redundant(JobType a
, UnitActiveState b
) {
390 return IN_SET(b
, UNIT_ACTIVE
, UNIT_RELOADING
);
393 return IN_SET(b
, UNIT_INACTIVE
, UNIT_FAILED
);
395 case JOB_VERIFY_ACTIVE
:
396 return IN_SET(b
, UNIT_ACTIVE
, UNIT_RELOADING
);
404 b
== UNIT_ACTIVATING
;
410 assert_not_reached("Invalid job type");
414 JobType
job_type_collapse(JobType t
, Unit
*u
) {
419 case JOB_TRY_RESTART
:
420 s
= unit_active_state(u
);
421 if (!UNIT_IS_ACTIVE_OR_RELOADING(s
))
427 s
= unit_active_state(u
);
428 if (!UNIT_IS_ACTIVE_OR_RELOADING(s
))
433 case JOB_RELOAD_OR_START
:
434 s
= unit_active_state(u
);
435 if (!UNIT_IS_ACTIVE_OR_RELOADING(s
))
445 int job_type_merge_and_collapse(JobType
*a
, JobType b
, Unit
*u
) {
448 t
= job_type_lookup_merge(*a
, b
);
452 *a
= job_type_collapse(t
, u
);
456 static bool job_is_runnable(Job
*j
) {
461 assert(j
->installed
);
463 /* Checks whether there is any job running for the units this
464 * job needs to be running after (in the case of a 'positive'
465 * job type) or before (in the case of a 'negative' job
468 /* Note that unit types have a say in what is runnable,
469 * too. For example, if they return -EAGAIN from
470 * unit_start() they can indicate they are not
473 /* First check if there is an override */
477 if (j
->type
== JOB_NOP
)
480 HASHMAP_FOREACH_KEY(v
, other
, j
->unit
->dependencies
[UNIT_AFTER
])
481 if (other
->job
&& job_compare(j
, other
->job
, UNIT_AFTER
) > 0) {
482 log_unit_debug(j
->unit
,
483 "starting held back, waiting for: %s",
488 HASHMAP_FOREACH_KEY(v
, other
, j
->unit
->dependencies
[UNIT_BEFORE
])
489 if (other
->job
&& job_compare(j
, other
->job
, UNIT_BEFORE
) > 0) {
490 log_unit_debug(j
->unit
,
491 "stopping held back, waiting for: %s",
499 static void job_change_type(Job
*j
, JobType newtype
) {
502 log_unit_debug(j
->unit
,
503 "Converting job %s/%s -> %s/%s",
504 j
->unit
->id
, job_type_to_string(j
->type
),
505 j
->unit
->id
, job_type_to_string(newtype
));
510 _pure_
static const char* job_get_begin_status_message_format(Unit
*u
, JobType t
) {
516 return "Reloading %s.";
518 assert(IN_SET(t
, JOB_START
, JOB_STOP
));
520 format
= UNIT_VTABLE(u
)->status_message_formats
.starting_stopping
[t
== JOB_STOP
];
524 /* Return generic strings */
526 return "Starting %s.";
528 assert(t
== JOB_STOP
);
529 return "Stopping %s.";
533 static void job_print_begin_status_message(Unit
*u
, JobType t
) {
538 /* Reload status messages have traditionally not been printed to console. */
539 if (!IN_SET(t
, JOB_START
, JOB_STOP
))
542 format
= job_get_begin_status_message_format(u
, t
);
544 DISABLE_WARNING_FORMAT_NONLITERAL
;
545 unit_status_printf(u
, STATUS_TYPE_NORMAL
, "", format
);
549 static void job_log_begin_status_message(Unit
*u
, uint32_t job_id
, JobType t
) {
550 const char *format
, *mid
;
555 assert(t
< _JOB_TYPE_MAX
);
557 if (!IN_SET(t
, JOB_START
, JOB_STOP
, JOB_RELOAD
))
560 if (!unit_log_level_test(u
, LOG_INFO
))
563 if (log_on_console()) /* Skip this if it would only go on the console anyway */
566 /* We log status messages for all units and all operations. */
568 format
= job_get_begin_status_message_format(u
, t
);
570 DISABLE_WARNING_FORMAT_NONLITERAL
;
571 (void) snprintf(buf
, sizeof buf
, format
, unit_status_string(u
));
574 mid
= t
== JOB_START
? "MESSAGE_ID=" SD_MESSAGE_UNIT_STARTING_STR
:
575 t
== JOB_STOP
? "MESSAGE_ID=" SD_MESSAGE_UNIT_STOPPING_STR
:
576 "MESSAGE_ID=" SD_MESSAGE_UNIT_RELOADING_STR
;
578 /* Note that we deliberately use LOG_MESSAGE() instead of
579 * LOG_UNIT_MESSAGE() here, since this is supposed to mimic
580 * closely what is written to screen using the status output,
581 * which is supposed the highest level, friendliest output
582 * possible, which means we should avoid the low-level unit
584 log_unit_struct(u
, LOG_INFO
,
585 LOG_MESSAGE("%s", buf
),
586 "JOB_ID=%" PRIu32
, job_id
,
587 "JOB_TYPE=%s", job_type_to_string(t
),
588 LOG_UNIT_INVOCATION_ID(u
),
592 static void job_emit_begin_status_message(Unit
*u
, uint32_t job_id
, JobType t
) {
595 assert(t
< _JOB_TYPE_MAX
);
597 job_log_begin_status_message(u
, job_id
, t
);
598 job_print_begin_status_message(u
, t
);
601 static int job_perform_on_unit(Job
**j
) {
608 /* While we execute this operation the job might go away (for
609 * example: because it finishes immediately or is replaced by
610 * a new, conflicting job.) To make sure we don't access a
611 * freed job later on we store the id here, so that we can
612 * verify the job is still valid. */
639 assert_not_reached("Invalid job type");
642 /* Log if the job still exists and the start/stop/reload function actually did something. Note that this means
643 * for units for which there's no 'activating' phase (i.e. because we transition directly from 'inactive' to
644 * 'active') we'll possibly skip the "Starting..." message. */
645 *j
= manager_get_job(m
, id
);
647 job_emit_begin_status_message(u
, id
, t
);
652 int job_run_and_invalidate(Job
*j
) {
656 assert(j
->installed
);
657 assert(j
->type
< _JOB_TYPE_MAX_IN_TRANSACTION
);
658 assert(j
->in_run_queue
);
660 prioq_remove(j
->manager
->run_queue
, j
, &j
->run_queue_idx
);
661 j
->in_run_queue
= false;
663 if (j
->state
!= JOB_WAITING
)
666 if (!job_is_runnable(j
))
669 job_start_timer(j
, true);
670 job_set_state(j
, JOB_RUNNING
);
671 job_add_to_dbus_queue(j
);
675 case JOB_VERIFY_ACTIVE
: {
678 t
= unit_active_state(j
->unit
);
679 if (UNIT_IS_ACTIVE_OR_RELOADING(t
))
681 else if (t
== UNIT_ACTIVATING
)
691 r
= job_perform_on_unit(&j
);
693 /* If the unit type does not support starting/stopping, then simply wait. */
699 r
= job_perform_on_unit(&j
);
707 assert_not_reached("Unknown job type");
712 job_set_state(j
, JOB_WAITING
); /* Hmm, not ready after all, let's return to JOB_WAITING state */
713 else if (r
== -EALREADY
) /* already being executed */
714 r
= job_finish_and_invalidate(j
, JOB_DONE
, true, true);
715 else if (r
== -ECOMM
) /* condition failed, but all is good */
716 r
= job_finish_and_invalidate(j
, JOB_DONE
, true, false);
717 else if (r
== -EBADR
)
718 r
= job_finish_and_invalidate(j
, JOB_SKIPPED
, true, false);
719 else if (r
== -ENOEXEC
)
720 r
= job_finish_and_invalidate(j
, JOB_INVALID
, true, false);
721 else if (r
== -EPROTO
)
722 r
= job_finish_and_invalidate(j
, JOB_ASSERT
, true, false);
723 else if (r
== -EOPNOTSUPP
)
724 r
= job_finish_and_invalidate(j
, JOB_UNSUPPORTED
, true, false);
725 else if (r
== -ENOLINK
)
726 r
= job_finish_and_invalidate(j
, JOB_DEPENDENCY
, true, false);
727 else if (r
== -ESTALE
)
728 r
= job_finish_and_invalidate(j
, JOB_ONCE
, true, false);
730 r
= job_finish_and_invalidate(j
, JOB_FAILED
, true, false);
736 _pure_
static const char *job_get_done_status_message_format(Unit
*u
, JobType t
, JobResult result
) {
738 static const char *const generic_finished_start_job
[_JOB_RESULT_MAX
] = {
739 [JOB_DONE
] = "Started %s.",
740 [JOB_TIMEOUT
] = "Timed out starting %s.",
741 [JOB_FAILED
] = "Failed to start %s.",
742 [JOB_DEPENDENCY
] = "Dependency failed for %s.",
743 [JOB_ASSERT
] = "Assertion failed for %s.",
744 [JOB_UNSUPPORTED
] = "Starting of %s not supported.",
745 [JOB_COLLECTED
] = "Unnecessary job for %s was removed.",
746 [JOB_ONCE
] = "Unit %s has been started before and cannot be started again."
748 static const char *const generic_finished_stop_job
[_JOB_RESULT_MAX
] = {
749 [JOB_DONE
] = "Stopped %s.",
750 [JOB_FAILED
] = "Stopped (with error) %s.",
751 [JOB_TIMEOUT
] = "Timed out stopping %s.",
753 static const char *const generic_finished_reload_job
[_JOB_RESULT_MAX
] = {
754 [JOB_DONE
] = "Reloaded %s.",
755 [JOB_FAILED
] = "Reload failed for %s.",
756 [JOB_TIMEOUT
] = "Timed out reloading %s.",
758 /* When verify-active detects the unit is inactive, report it.
759 * Most likely a DEPEND warning from a requisiting unit will
760 * occur next and it's nice to see what was requisited. */
761 static const char *const generic_finished_verify_active_job
[_JOB_RESULT_MAX
] = {
762 [JOB_SKIPPED
] = "%s is not active.",
769 assert(t
< _JOB_TYPE_MAX
);
771 if (IN_SET(t
, JOB_START
, JOB_STOP
, JOB_RESTART
)) {
772 const UnitStatusMessageFormats
*formats
= &UNIT_VTABLE(u
)->status_message_formats
;
773 if (formats
->finished_job
) {
774 format
= formats
->finished_job(u
, t
, result
);
778 format
= t
== JOB_START
?
779 formats
->finished_start_job
[result
] :
780 formats
->finished_stop_job
[result
];
785 /* Return generic strings */
787 return generic_finished_start_job
[result
];
788 else if (IN_SET(t
, JOB_STOP
, JOB_RESTART
))
789 return generic_finished_stop_job
[result
];
790 else if (t
== JOB_RELOAD
)
791 return generic_finished_reload_job
[result
];
792 else if (t
== JOB_VERIFY_ACTIVE
)
793 return generic_finished_verify_active_job
[result
];
798 static const struct {
799 const char *color
, *word
;
800 } job_print_done_status_messages
[_JOB_RESULT_MAX
] = {
801 [JOB_DONE
] = { ANSI_OK_COLOR
, " OK " },
802 [JOB_TIMEOUT
] = { ANSI_HIGHLIGHT_RED
, " TIME " },
803 [JOB_FAILED
] = { ANSI_HIGHLIGHT_RED
, "FAILED" },
804 [JOB_DEPENDENCY
] = { ANSI_HIGHLIGHT_YELLOW
, "DEPEND" },
805 [JOB_SKIPPED
] = { ANSI_HIGHLIGHT
, " INFO " },
806 [JOB_ASSERT
] = { ANSI_HIGHLIGHT_YELLOW
, "ASSERT" },
807 [JOB_UNSUPPORTED
] = { ANSI_HIGHLIGHT_YELLOW
, "UNSUPP" },
809 [JOB_ONCE
] = { ANSI_HIGHLIGHT_RED
, " ONCE " },
812 static void job_print_done_status_message(Unit
*u
, JobType t
, JobResult result
) {
818 assert(t
< _JOB_TYPE_MAX
);
820 /* Reload status messages have traditionally not been printed to console. */
824 /* No message if the job did not actually do anything due to failed condition. */
825 if (t
== JOB_START
&& result
== JOB_DONE
&& !u
->condition_result
)
828 if (!job_print_done_status_messages
[result
].word
)
831 format
= job_get_done_status_message_format(u
, t
, result
);
835 if (log_get_show_color())
836 status
= strjoina(job_print_done_status_messages
[result
].color
,
837 job_print_done_status_messages
[result
].word
,
840 status
= job_print_done_status_messages
[result
].word
;
842 DISABLE_WARNING_FORMAT_NONLITERAL
;
843 unit_status_printf(u
,
844 result
== JOB_DONE
? STATUS_TYPE_NORMAL
: STATUS_TYPE_NOTICE
,
848 if (t
== JOB_START
&& result
== JOB_FAILED
) {
849 _cleanup_free_
char *quoted
= NULL
;
851 quoted
= shell_maybe_quote(u
->id
, ESCAPE_BACKSLASH
);
852 manager_status_printf(u
->manager
, STATUS_TYPE_NORMAL
, NULL
, "See 'systemctl status %s' for details.", strna(quoted
));
856 static void job_log_done_status_message(Unit
*u
, uint32_t job_id
, JobType t
, JobResult result
) {
857 const char *format
, *mid
;
859 static const int job_result_log_level
[_JOB_RESULT_MAX
] = {
860 [JOB_DONE
] = LOG_INFO
,
861 [JOB_CANCELED
] = LOG_INFO
,
862 [JOB_TIMEOUT
] = LOG_ERR
,
863 [JOB_FAILED
] = LOG_ERR
,
864 [JOB_DEPENDENCY
] = LOG_WARNING
,
865 [JOB_SKIPPED
] = LOG_NOTICE
,
866 [JOB_INVALID
] = LOG_INFO
,
867 [JOB_ASSERT
] = LOG_WARNING
,
868 [JOB_UNSUPPORTED
] = LOG_WARNING
,
869 [JOB_COLLECTED
] = LOG_INFO
,
870 [JOB_ONCE
] = LOG_ERR
,
875 assert(t
< _JOB_TYPE_MAX
);
877 /* Skip printing if output goes to the console, and job_print_status_message()
878 will actually print something to the console. */
879 if (log_on_console() && job_print_done_status_messages
[result
].word
)
882 /* Show condition check message if the job did not actually do anything due to failed condition. */
883 if (t
== JOB_START
&& result
== JOB_DONE
&& !u
->condition_result
) {
884 log_unit_struct(u
, LOG_INFO
,
885 "MESSAGE=Condition check resulted in %s being skipped.", unit_status_string(u
),
886 "JOB_ID=%" PRIu32
, job_id
,
887 "JOB_TYPE=%s", job_type_to_string(t
),
888 "JOB_RESULT=%s", job_result_to_string(result
),
889 LOG_UNIT_INVOCATION_ID(u
),
890 "MESSAGE_ID=" SD_MESSAGE_UNIT_STARTED_STR
);
895 if (!unit_log_level_test(u
, job_result_log_level
[result
]))
898 format
= job_get_done_status_message_format(u
, t
, result
);
902 /* The description might be longer than the buffer, but that's OK,
903 * we'll just truncate it here. Note that we use snprintf() rather than
904 * xsprintf() on purpose here: we are fine with truncation and don't
905 * consider that an error. */
906 DISABLE_WARNING_FORMAT_NONLITERAL
;
907 (void) snprintf(buf
, sizeof(buf
), format
, unit_status_string(u
));
913 if (result
== JOB_DONE
)
914 mid
= "MESSAGE_ID=" SD_MESSAGE_UNIT_STARTED_STR
;
916 mid
= "MESSAGE_ID=" SD_MESSAGE_UNIT_FAILED_STR
;
920 mid
= "MESSAGE_ID=" SD_MESSAGE_UNIT_RELOADED_STR
;
925 mid
= "MESSAGE_ID=" SD_MESSAGE_UNIT_STOPPED_STR
;
929 log_unit_struct(u
, job_result_log_level
[result
],
930 LOG_MESSAGE("%s", buf
),
931 "JOB_ID=%" PRIu32
, job_id
,
932 "JOB_TYPE=%s", job_type_to_string(t
),
933 "JOB_RESULT=%s", job_result_to_string(result
),
934 LOG_UNIT_INVOCATION_ID(u
));
938 log_unit_struct(u
, job_result_log_level
[result
],
939 LOG_MESSAGE("%s", buf
),
940 "JOB_ID=%" PRIu32
, job_id
,
941 "JOB_TYPE=%s", job_type_to_string(t
),
942 "JOB_RESULT=%s", job_result_to_string(result
),
943 LOG_UNIT_INVOCATION_ID(u
),
947 static void job_emit_done_status_message(Unit
*u
, uint32_t job_id
, JobType t
, JobResult result
) {
950 job_log_done_status_message(u
, job_id
, t
, result
);
951 job_print_done_status_message(u
, t
, result
);
954 static void job_fail_dependencies(Unit
*u
, UnitDependency d
) {
960 HASHMAP_FOREACH_KEY(v
, other
, u
->dependencies
[d
]) {
965 if (!IN_SET(j
->type
, JOB_START
, JOB_VERIFY_ACTIVE
))
968 job_finish_and_invalidate(j
, JOB_DEPENDENCY
, true, false);
972 int job_finish_and_invalidate(Job
*j
, JobResult result
, bool recursive
, bool already
) {
979 assert(j
->installed
);
980 assert(j
->type
< _JOB_TYPE_MAX_IN_TRANSACTION
);
987 log_unit_debug(u
, "Job %" PRIu32
" %s/%s finished, result=%s",
988 j
->id
, u
->id
, job_type_to_string(t
), job_result_to_string(result
));
990 /* If this job did nothing to the respective unit we don't log the status message */
992 job_emit_done_status_message(u
, j
->id
, t
, result
);
994 /* Patch restart jobs so that they become normal start jobs */
995 if (result
== JOB_DONE
&& t
== JOB_RESTART
) {
997 job_change_type(j
, JOB_START
);
998 job_set_state(j
, JOB_WAITING
);
1000 job_add_to_dbus_queue(j
);
1001 job_add_to_run_queue(j
);
1002 job_add_to_gc_queue(j
);
1007 if (IN_SET(result
, JOB_FAILED
, JOB_INVALID
))
1008 j
->manager
->n_failed_jobs
++;
1013 /* Fail depending jobs on failure */
1014 if (result
!= JOB_DONE
&& recursive
) {
1015 if (IN_SET(t
, JOB_START
, JOB_VERIFY_ACTIVE
)) {
1016 job_fail_dependencies(u
, UNIT_REQUIRED_BY
);
1017 job_fail_dependencies(u
, UNIT_REQUISITE_OF
);
1018 job_fail_dependencies(u
, UNIT_BOUND_BY
);
1019 } else if (t
== JOB_STOP
)
1020 job_fail_dependencies(u
, UNIT_CONFLICTED_BY
);
1023 /* A special check to make sure we take down anything RequisiteOf if we
1024 * aren't active. This is when the verify-active job merges with a
1025 * satisfying job type, and then loses it's invalidation effect, as the
1026 * result there is JOB_DONE for the start job we merged into, while we
1027 * should be failing the depending job if the said unit isn't in fact
1028 * active. Oneshots are an example of this, where going directly from
1029 * activating to inactive is success.
1031 * This happens when you use ConditionXYZ= in a unit too, since in that
1032 * case the job completes with the JOB_DONE result, but the unit never
1033 * really becomes active. Note that such a case still involves merging:
1035 * A start job waits for something else, and a verify-active comes in
1036 * and merges in the installed job. Then, later, when it becomes
1037 * runnable, it finishes with JOB_DONE result as execution on conditions
1038 * not being met is skipped, breaking our dependency semantics.
1040 * Also, depending on if start job waits or not, the merging may or may
1041 * not happen (the verify-active job may trigger after it finishes), so
1042 * you get undeterministic results without this check.
1044 if (result
== JOB_DONE
&& recursive
&& !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u
))) {
1045 if (IN_SET(t
, JOB_START
, JOB_RELOAD
))
1046 job_fail_dependencies(u
, UNIT_REQUISITE_OF
);
1048 /* Trigger OnFailure dependencies that are not generated by
1049 * the unit itself. We don't treat JOB_CANCELED as failure in
1050 * this context. And JOB_FAILURE is already handled by the
1052 if (IN_SET(result
, JOB_TIMEOUT
, JOB_DEPENDENCY
)) {
1053 log_unit_struct(u
, LOG_NOTICE
,
1054 "JOB_TYPE=%s", job_type_to_string(t
),
1055 "JOB_RESULT=%s", job_result_to_string(result
),
1056 LOG_UNIT_MESSAGE(u
, "Job %s/%s failed with result '%s'.",
1058 job_type_to_string(t
),
1059 job_result_to_string(result
)));
1061 unit_start_on_failure(u
);
1064 unit_trigger_notify(u
);
1067 /* Try to start the next jobs that can be started */
1068 HASHMAP_FOREACH_KEY(v
, other
, u
->dependencies
[UNIT_AFTER
])
1070 job_add_to_run_queue(other
->job
);
1071 job_add_to_gc_queue(other
->job
);
1073 HASHMAP_FOREACH_KEY(v
, other
, u
->dependencies
[UNIT_BEFORE
])
1075 job_add_to_run_queue(other
->job
);
1076 job_add_to_gc_queue(other
->job
);
1079 manager_check_finished(u
->manager
);
1084 static int job_dispatch_timer(sd_event_source
*s
, uint64_t monotonic
, void *userdata
) {
1089 assert(s
== j
->timer_event_source
);
1091 log_unit_warning(j
->unit
, "Job %s/%s timed out.", j
->unit
->id
, job_type_to_string(j
->type
));
1094 job_finish_and_invalidate(j
, JOB_TIMEOUT
, true, false);
1096 emergency_action(u
->manager
, u
->job_timeout_action
,
1097 EMERGENCY_ACTION_IS_WATCHDOG
|EMERGENCY_ACTION_WARN
,
1098 u
->job_timeout_reboot_arg
, -1, "job timed out");
1103 int job_start_timer(Job
*j
, bool job_running
) {
1105 usec_t timeout_time
, old_timeout_time
;
1108 j
->begin_running_usec
= now(CLOCK_MONOTONIC
);
1110 if (j
->unit
->job_running_timeout
== USEC_INFINITY
)
1113 timeout_time
= usec_add(j
->begin_running_usec
, j
->unit
->job_running_timeout
);
1115 if (j
->timer_event_source
) {
1116 /* Update only if JobRunningTimeoutSec= results in earlier timeout */
1117 r
= sd_event_source_get_time(j
->timer_event_source
, &old_timeout_time
);
1121 if (old_timeout_time
<= timeout_time
)
1124 return sd_event_source_set_time(j
->timer_event_source
, timeout_time
);
1127 if (j
->timer_event_source
)
1130 j
->begin_usec
= now(CLOCK_MONOTONIC
);
1132 if (j
->unit
->job_timeout
== USEC_INFINITY
)
1135 timeout_time
= usec_add(j
->begin_usec
, j
->unit
->job_timeout
);
1138 r
= sd_event_add_time(
1140 &j
->timer_event_source
,
1143 job_dispatch_timer
, j
);
1147 (void) sd_event_source_set_description(j
->timer_event_source
, "job-start");
1152 void job_add_to_run_queue(Job
*j
) {
1156 assert(j
->installed
);
1158 if (j
->in_run_queue
)
1161 if (prioq_isempty(j
->manager
->run_queue
)) {
1162 r
= sd_event_source_set_enabled(j
->manager
->run_queue_event_source
, SD_EVENT_ONESHOT
);
1164 log_warning_errno(r
, "Failed to enable job run queue event source, ignoring: %m");
1167 r
= prioq_put(j
->manager
->run_queue
, j
, &j
->run_queue_idx
);
1169 log_warning_errno(r
, "Failed put job in run queue, ignoring: %m");
1171 j
->in_run_queue
= true;
1174 void job_add_to_dbus_queue(Job
*j
) {
1176 assert(j
->installed
);
1178 if (j
->in_dbus_queue
)
1181 /* We don't check if anybody is subscribed here, since this
1182 * job might just have been created and not yet assigned to a
1183 * connection/client. */
1185 LIST_PREPEND(dbus_queue
, j
->manager
->dbus_job_queue
, j
);
1186 j
->in_dbus_queue
= true;
1189 char *job_dbus_path(Job
*j
) {
1194 if (asprintf(&p
, "/org/freedesktop/systemd1/job/%"PRIu32
, j
->id
) < 0)
1200 int job_serialize(Job
*j
, FILE *f
) {
1204 (void) serialize_item_format(f
, "job-id", "%u", j
->id
);
1205 (void) serialize_item(f
, "job-type", job_type_to_string(j
->type
));
1206 (void) serialize_item(f
, "job-state", job_state_to_string(j
->state
));
1207 (void) serialize_bool(f
, "job-irreversible", j
->irreversible
);
1208 (void) serialize_bool(f
, "job-sent-dbus-new-signal", j
->sent_dbus_new_signal
);
1209 (void) serialize_bool(f
, "job-ignore-order", j
->ignore_order
);
1211 if (j
->begin_usec
> 0)
1212 (void) serialize_usec(f
, "job-begin", j
->begin_usec
);
1213 if (j
->begin_running_usec
> 0)
1214 (void) serialize_usec(f
, "job-begin-running", j
->begin_running_usec
);
1216 bus_track_serialize(j
->bus_track
, f
, "subscribed");
1223 int job_deserialize(Job
*j
, FILE *f
) {
1230 _cleanup_free_
char *line
= NULL
;
1234 r
= read_line(f
, LONG_LINE_MAX
, &line
);
1236 return log_error_errno(r
, "Failed to read serialization line: %m");
1246 k
= strcspn(l
, "=");
1254 if (streq(l
, "job-id")) {
1256 if (safe_atou32(v
, &j
->id
) < 0)
1257 log_debug("Failed to parse job id value: %s", v
);
1259 } else if (streq(l
, "job-type")) {
1262 t
= job_type_from_string(v
);
1264 log_debug("Failed to parse job type: %s", v
);
1265 else if (t
>= _JOB_TYPE_MAX_IN_TRANSACTION
)
1266 log_debug("Cannot deserialize job of type: %s", v
);
1270 } else if (streq(l
, "job-state")) {
1273 s
= job_state_from_string(v
);
1275 log_debug("Failed to parse job state: %s", v
);
1277 job_set_state(j
, s
);
1279 } else if (streq(l
, "job-irreversible")) {
1282 b
= parse_boolean(v
);
1284 log_debug("Failed to parse job irreversible flag: %s", v
);
1286 j
->irreversible
= j
->irreversible
|| b
;
1288 } else if (streq(l
, "job-sent-dbus-new-signal")) {
1291 b
= parse_boolean(v
);
1293 log_debug("Failed to parse job sent_dbus_new_signal flag: %s", v
);
1295 j
->sent_dbus_new_signal
= j
->sent_dbus_new_signal
|| b
;
1297 } else if (streq(l
, "job-ignore-order")) {
1300 b
= parse_boolean(v
);
1302 log_debug("Failed to parse job ignore_order flag: %s", v
);
1304 j
->ignore_order
= j
->ignore_order
|| b
;
1306 } else if (streq(l
, "job-begin"))
1307 (void) deserialize_usec(v
, &j
->begin_usec
);
1309 else if (streq(l
, "job-begin-running"))
1310 (void) deserialize_usec(v
, &j
->begin_running_usec
);
1312 else if (streq(l
, "subscribed")) {
1313 if (strv_extend(&j
->deserialized_clients
, v
) < 0)
1316 log_debug("Unknown job serialization key: %s", l
);
1320 int job_coldplug(Job
*j
) {
1322 usec_t timeout_time
= USEC_INFINITY
;
1326 /* After deserialization is complete and the bus connection
1327 * set up again, let's start watching our subscribers again */
1328 (void) bus_job_coldplug_bus_track(j
);
1330 if (j
->state
== JOB_WAITING
)
1331 job_add_to_run_queue(j
);
1333 /* Maybe due to new dependencies we don't actually need this job anymore? */
1334 job_add_to_gc_queue(j
);
1336 /* Create timer only when job began or began running and the respective timeout is finite.
1337 * Follow logic of job_start_timer() if both timeouts are finite */
1338 if (j
->begin_usec
== 0)
1341 if (j
->unit
->job_timeout
!= USEC_INFINITY
)
1342 timeout_time
= usec_add(j
->begin_usec
, j
->unit
->job_timeout
);
1344 if (timestamp_is_set(j
->begin_running_usec
))
1345 timeout_time
= MIN(timeout_time
, usec_add(j
->begin_running_usec
, j
->unit
->job_running_timeout
));
1347 if (timeout_time
== USEC_INFINITY
)
1350 j
->timer_event_source
= sd_event_source_unref(j
->timer_event_source
);
1352 r
= sd_event_add_time(
1354 &j
->timer_event_source
,
1357 job_dispatch_timer
, j
);
1359 log_debug_errno(r
, "Failed to restart timeout for job: %m");
1361 (void) sd_event_source_set_description(j
->timer_event_source
, "job-timeout");
1366 void job_shutdown_magic(Job
*j
) {
1369 /* The shutdown target gets some special treatment here: we
1370 * tell the kernel to begin with flushing its disk caches, to
1371 * optimize shutdown time a bit. Ideally we wouldn't hardcode
1372 * this magic into PID 1. However all other processes aren't
1373 * options either since they'd exit much sooner than PID 1 and
1374 * asynchronous sync() would cause their exit to be
1377 if (j
->type
!= JOB_START
)
1380 if (!MANAGER_IS_SYSTEM(j
->unit
->manager
))
1383 if (!unit_has_name(j
->unit
, SPECIAL_SHUTDOWN_TARGET
))
1386 /* In case messages on console has been disabled on boot */
1387 j
->unit
->manager
->no_console_output
= false;
1389 if (detect_container() > 0)
1392 (void) asynchronous_sync(NULL
);
1395 int job_get_timeout(Job
*j
, usec_t
*timeout
) {
1396 usec_t x
= USEC_INFINITY
, y
= USEC_INFINITY
;
1402 if (j
->timer_event_source
) {
1403 r
= sd_event_source_get_time(j
->timer_event_source
, &x
);
1408 if (UNIT_VTABLE(u
)->get_timeout
) {
1409 r
= UNIT_VTABLE(u
)->get_timeout(u
, &y
);
1414 if (x
== USEC_INFINITY
&& y
== USEC_INFINITY
)
1417 *timeout
= MIN(x
, y
);
1421 bool job_may_gc(Job
*j
) {
1427 /* Checks whether this job should be GC'ed away. We only do this for jobs of units that have no effect on their
1428 * own and just track external state. For now the only unit type that qualifies for this are .device units.
1429 * Returns true if the job can be collected. */
1431 if (!UNIT_VTABLE(j
->unit
)->gc_jobs
)
1434 if (sd_bus_track_count(j
->bus_track
) > 0)
1437 /* FIXME: So this is a bit ugly: for now we don't properly track references made via private bus connections
1438 * (because it's nasty, as sd_bus_track doesn't apply to it). We simply remember that the job was once
1439 * referenced by one, and reset this whenever we notice that no private bus connections are around. This means
1440 * the GC is a bit too conservative when it comes to jobs created by private bus connections. */
1441 if (j
->ref_by_private_bus
) {
1442 if (set_isempty(j
->unit
->manager
->private_buses
))
1443 j
->ref_by_private_bus
= false;
1448 if (j
->type
== JOB_NOP
)
1451 /* The logic is inverse to job_is_runnable, we cannot GC as long as we block any job. */
1452 HASHMAP_FOREACH_KEY(v
, other
, j
->unit
->dependencies
[UNIT_BEFORE
])
1453 if (other
->job
&& job_compare(j
, other
->job
, UNIT_BEFORE
) < 0)
1456 HASHMAP_FOREACH_KEY(v
, other
, j
->unit
->dependencies
[UNIT_AFTER
])
1457 if (other
->job
&& job_compare(j
, other
->job
, UNIT_AFTER
) < 0)
1463 void job_add_to_gc_queue(Job
*j
) {
1472 LIST_PREPEND(gc_queue
, j
->unit
->manager
->gc_job_queue
, j
);
1473 j
->in_gc_queue
= true;
1476 static int job_compare_id(Job
* const *a
, Job
* const *b
) {
1477 return CMP((*a
)->id
, (*b
)->id
);
1480 static size_t sort_job_list(Job
**list
, size_t n
) {
1481 Job
*previous
= NULL
;
1484 /* Order by numeric IDs */
1485 typesafe_qsort(list
, n
, job_compare_id
);
1487 /* Filter out duplicates */
1488 for (a
= 0, b
= 0; a
< n
; a
++) {
1490 if (previous
== list
[a
])
1493 previous
= list
[b
++] = list
[a
];
1499 int job_get_before(Job
*j
, Job
*** ret
) {
1500 _cleanup_free_ Job
** list
= NULL
;
1501 size_t n
= 0, n_allocated
= 0;
1505 /* Returns a list of all pending jobs that need to finish before this job may be started. */
1510 if (j
->ignore_order
) {
1515 HASHMAP_FOREACH_KEY(v
, other
, j
->unit
->dependencies
[UNIT_AFTER
]) {
1518 if (job_compare(j
, other
->job
, UNIT_AFTER
) <= 0)
1521 if (!GREEDY_REALLOC(list
, n_allocated
, n
+1))
1523 list
[n
++] = other
->job
;
1526 HASHMAP_FOREACH_KEY(v
, other
, j
->unit
->dependencies
[UNIT_BEFORE
]) {
1529 if (job_compare(j
, other
->job
, UNIT_BEFORE
) <= 0)
1532 if (!GREEDY_REALLOC(list
, n_allocated
, n
+1))
1534 list
[n
++] = other
->job
;
1537 n
= sort_job_list(list
, n
);
1539 *ret
= TAKE_PTR(list
);
1544 int job_get_after(Job
*j
, Job
*** ret
) {
1545 _cleanup_free_ Job
** list
= NULL
;
1546 size_t n
= 0, n_allocated
= 0;
1553 /* Returns a list of all pending jobs that are waiting for this job to finish. */
1555 HASHMAP_FOREACH_KEY(v
, other
, j
->unit
->dependencies
[UNIT_BEFORE
]) {
1559 if (other
->job
->ignore_order
)
1562 if (job_compare(j
, other
->job
, UNIT_BEFORE
) >= 0)
1565 if (!GREEDY_REALLOC(list
, n_allocated
, n
+1))
1567 list
[n
++] = other
->job
;
1570 HASHMAP_FOREACH_KEY(v
, other
, j
->unit
->dependencies
[UNIT_AFTER
]) {
1574 if (other
->job
->ignore_order
)
1577 if (job_compare(j
, other
->job
, UNIT_AFTER
) >= 0)
1580 if (!GREEDY_REALLOC(list
, n_allocated
, n
+1))
1582 list
[n
++] = other
->job
;
1585 n
= sort_job_list(list
, n
);
1587 *ret
= TAKE_PTR(list
);
1592 static const char* const job_state_table
[_JOB_STATE_MAX
] = {
1593 [JOB_WAITING
] = "waiting",
1594 [JOB_RUNNING
] = "running",
1597 DEFINE_STRING_TABLE_LOOKUP(job_state
, JobState
);
1599 static const char* const job_type_table
[_JOB_TYPE_MAX
] = {
1600 [JOB_START
] = "start",
1601 [JOB_VERIFY_ACTIVE
] = "verify-active",
1602 [JOB_STOP
] = "stop",
1603 [JOB_RELOAD
] = "reload",
1604 [JOB_RELOAD_OR_START
] = "reload-or-start",
1605 [JOB_RESTART
] = "restart",
1606 [JOB_TRY_RESTART
] = "try-restart",
1607 [JOB_TRY_RELOAD
] = "try-reload",
1611 DEFINE_STRING_TABLE_LOOKUP(job_type
, JobType
);
1613 static const char* const job_mode_table
[_JOB_MODE_MAX
] = {
1614 [JOB_FAIL
] = "fail",
1615 [JOB_REPLACE
] = "replace",
1616 [JOB_REPLACE_IRREVERSIBLY
] = "replace-irreversibly",
1617 [JOB_ISOLATE
] = "isolate",
1618 [JOB_FLUSH
] = "flush",
1619 [JOB_IGNORE_DEPENDENCIES
] = "ignore-dependencies",
1620 [JOB_IGNORE_REQUIREMENTS
] = "ignore-requirements",
1621 [JOB_TRIGGERING
] = "triggering",
1624 DEFINE_STRING_TABLE_LOOKUP(job_mode
, JobMode
);
1626 static const char* const job_result_table
[_JOB_RESULT_MAX
] = {
1627 [JOB_DONE
] = "done",
1628 [JOB_CANCELED
] = "canceled",
1629 [JOB_TIMEOUT
] = "timeout",
1630 [JOB_FAILED
] = "failed",
1631 [JOB_DEPENDENCY
] = "dependency",
1632 [JOB_SKIPPED
] = "skipped",
1633 [JOB_INVALID
] = "invalid",
1634 [JOB_ASSERT
] = "assert",
1635 [JOB_UNSUPPORTED
] = "unsupported",
1636 [JOB_COLLECTED
] = "collected",
1637 [JOB_ONCE
] = "once",
1640 DEFINE_STRING_TABLE_LOOKUP(job_result
, JobResult
);
1642 const char* job_type_to_access_method(JobType t
) {
1644 assert(t
< _JOB_TYPE_MAX
);
1646 if (IN_SET(t
, JOB_START
, JOB_RESTART
, JOB_TRY_RESTART
))
1648 else if (t
== JOB_STOP
)
1655 * assume_dep assumed dependency between units (a is before/after b)
1658 * 0 jobs are independent,
1659 * >0 a should run after b,
1660 * <0 a should run before b,
1662 * The logic means that for a service a and a service b where b.After=a:
1664 * start a + start b → 1st step start a, 2nd step start b
1665 * start a + stop b → 1st step stop b, 2nd step start a
1666 * stop a + start b → 1st step stop a, 2nd step start b
1667 * stop a + stop b → 1st step stop b, 2nd step stop a
1669 * This has the side effect that restarts are properly
1672 int job_compare(Job
*a
, Job
*b
, UnitDependency assume_dep
) {
1673 assert(a
->type
< _JOB_TYPE_MAX_IN_TRANSACTION
);
1674 assert(b
->type
< _JOB_TYPE_MAX_IN_TRANSACTION
);
1675 assert(IN_SET(assume_dep
, UNIT_AFTER
, UNIT_BEFORE
));
1677 /* Trivial cases first */
1678 if (a
->type
== JOB_NOP
|| b
->type
== JOB_NOP
)
1681 if (a
->ignore_order
|| b
->ignore_order
)
1684 if (assume_dep
== UNIT_AFTER
)
1685 return -job_compare(b
, a
, UNIT_BEFORE
);
1687 /* Let's make it simple, JOB_STOP goes always first (in case both ua and ub stop,
1688 * then ub's stop goes first anyway).
1689 * JOB_RESTART is JOB_STOP in disguise (before it is patched to JOB_START). */
1690 if (IN_SET(b
->type
, JOB_STOP
, JOB_RESTART
))