chiark / gitweb /
job: fix loss of ordering with restart jobs
[elogind.git] / src / job.c
1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
2
3 /***
4   This file is part of systemd.
5
6   Copyright 2010 Lennart Poettering
7
8   systemd is free software; you can redistribute it and/or modify it
9   under the terms of the GNU General Public License as published by
10   the Free Software Foundation; either version 2 of the License, or
11   (at your option) any later version.
12
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   General Public License for more details.
17
18   You should have received a copy of the GNU General Public License
19   along with systemd; If not, see <http://www.gnu.org/licenses/>.
20 ***/
21
22 #include <assert.h>
23 #include <errno.h>
24 #include <sys/timerfd.h>
25 #include <sys/epoll.h>
26
27 #include "set.h"
28 #include "unit.h"
29 #include "macro.h"
30 #include "strv.h"
31 #include "load-fragment.h"
32 #include "load-dropin.h"
33 #include "log.h"
34 #include "dbus-job.h"
35
36 Job* job_new(Manager *m, JobType type, Unit *unit) {
37         Job *j;
38
39         assert(m);
40         assert(type < _JOB_TYPE_MAX);
41         assert(unit);
42
43         if (!(j = new0(Job, 1)))
44                 return NULL;
45
46         j->manager = m;
47         j->id = m->current_job_id++;
48         j->type = type;
49         j->unit = unit;
50
51         j->timer_watch.type = WATCH_INVALID;
52
53         /* We don't link it here, that's what job_dependency() is for */
54
55         return j;
56 }
57
58 void job_free(Job *j) {
59         assert(j);
60
61         /* Detach from next 'bigger' objects */
62         if (j->installed) {
63                 bus_job_send_removed_signal(j);
64
65                 if (j->unit->job == j) {
66                         j->unit->job = NULL;
67                         unit_add_to_gc_queue(j->unit);
68                 }
69
70                 hashmap_remove(j->manager->jobs, UINT32_TO_PTR(j->id));
71                 j->installed = false;
72         }
73
74         /* Detach from next 'smaller' objects */
75         manager_transaction_unlink_job(j->manager, j, true);
76
77         if (j->in_run_queue)
78                 LIST_REMOVE(Job, run_queue, j->manager->run_queue, j);
79
80         if (j->in_dbus_queue)
81                 LIST_REMOVE(Job, dbus_queue, j->manager->dbus_job_queue, j);
82
83         if (j->timer_watch.type != WATCH_INVALID) {
84                 assert(j->timer_watch.type == WATCH_JOB_TIMER);
85                 assert(j->timer_watch.data.job == j);
86                 assert(j->timer_watch.fd >= 0);
87
88                 assert_se(epoll_ctl(j->manager->epoll_fd, EPOLL_CTL_DEL, j->timer_watch.fd, NULL) >= 0);
89                 close_nointr_nofail(j->timer_watch.fd);
90         }
91
92         free(j->bus_client);
93         free(j);
94 }
95
96 JobDependency* job_dependency_new(Job *subject, Job *object, bool matters, bool conflicts) {
97         JobDependency *l;
98
99         assert(object);
100
101         /* Adds a new job link, which encodes that the 'subject' job
102          * needs the 'object' job in some way. If 'subject' is NULL
103          * this means the 'anchor' job (i.e. the one the user
104          * explicitly asked for) is the requester. */
105
106         if (!(l = new0(JobDependency, 1)))
107                 return NULL;
108
109         l->subject = subject;
110         l->object = object;
111         l->matters = matters;
112         l->conflicts = conflicts;
113
114         if (subject)
115                 LIST_PREPEND(JobDependency, subject, subject->subject_list, l);
116         else
117                 LIST_PREPEND(JobDependency, subject, object->manager->transaction_anchor, l);
118
119         LIST_PREPEND(JobDependency, object, object->object_list, l);
120
121         return l;
122 }
123
124 void job_dependency_free(JobDependency *l) {
125         assert(l);
126
127         if (l->subject)
128                 LIST_REMOVE(JobDependency, subject, l->subject->subject_list, l);
129         else
130                 LIST_REMOVE(JobDependency, subject, l->object->manager->transaction_anchor, l);
131
132         LIST_REMOVE(JobDependency, object, l->object->object_list, l);
133
134         free(l);
135 }
136
137 void job_dump(Job *j, FILE*f, const char *prefix) {
138         assert(j);
139         assert(f);
140
141         if (!prefix)
142                 prefix = "";
143
144         fprintf(f,
145                 "%s-> Job %u:\n"
146                 "%s\tAction: %s -> %s\n"
147                 "%s\tState: %s\n"
148                 "%s\tForced: %s\n",
149                 prefix, j->id,
150                 prefix, j->unit->id, job_type_to_string(j->type),
151                 prefix, job_state_to_string(j->state),
152                 prefix, yes_no(j->override));
153 }
154
155 bool job_is_anchor(Job *j) {
156         JobDependency *l;
157
158         assert(j);
159
160         LIST_FOREACH(object, l, j->object_list)
161                 if (!l->subject)
162                         return true;
163
164         return false;
165 }
166
167 static bool types_match(JobType a, JobType b, JobType c, JobType d) {
168         return
169                 (a == c && b == d) ||
170                 (a == d && b == c);
171 }
172
173 int job_type_merge(JobType *a, JobType b) {
174         if (*a == b)
175                 return 0;
176
177         /* Merging is associative! a merged with b merged with c is
178          * the same as a merged with c merged with b. */
179
180         /* Mergeability is transitive! if a can be merged with b and b
181          * with c then a also with c */
182
183         /* Also, if a merged with b cannot be merged with c, then
184          * either a or b cannot be merged with c either */
185
186         if (types_match(*a, b, JOB_START, JOB_VERIFY_ACTIVE))
187                 *a = JOB_START;
188         else if (types_match(*a, b, JOB_START, JOB_RELOAD) ||
189                  types_match(*a, b, JOB_START, JOB_RELOAD_OR_START) ||
190                  types_match(*a, b, JOB_VERIFY_ACTIVE, JOB_RELOAD_OR_START) ||
191                  types_match(*a, b, JOB_RELOAD, JOB_RELOAD_OR_START))
192                 *a = JOB_RELOAD_OR_START;
193         else if (types_match(*a, b, JOB_START, JOB_RESTART) ||
194                  types_match(*a, b, JOB_START, JOB_TRY_RESTART) ||
195                  types_match(*a, b, JOB_VERIFY_ACTIVE, JOB_RESTART) ||
196                  types_match(*a, b, JOB_RELOAD, JOB_RESTART) ||
197                  types_match(*a, b, JOB_RELOAD_OR_START, JOB_RESTART) ||
198                  types_match(*a, b, JOB_RELOAD_OR_START, JOB_TRY_RESTART) ||
199                  types_match(*a, b, JOB_RESTART, JOB_TRY_RESTART))
200                 *a = JOB_RESTART;
201         else if (types_match(*a, b, JOB_VERIFY_ACTIVE, JOB_RELOAD))
202                 *a = JOB_RELOAD;
203         else if (types_match(*a, b, JOB_VERIFY_ACTIVE, JOB_TRY_RESTART) ||
204                  types_match(*a, b, JOB_RELOAD, JOB_TRY_RESTART))
205                 *a = JOB_TRY_RESTART;
206         else
207                 return -EEXIST;
208
209         return 0;
210 }
211
212 bool job_type_is_mergeable(JobType a, JobType b) {
213         return job_type_merge(&a, b) >= 0;
214 }
215
216 bool job_type_is_superset(JobType a, JobType b) {
217
218         /* Checks whether operation a is a "superset" of b in its
219          * actions */
220
221         if (a == b)
222                 return true;
223
224         switch (a) {
225                 case JOB_START:
226                         return b == JOB_VERIFY_ACTIVE;
227
228                 case JOB_RELOAD:
229                         return
230                                 b == JOB_VERIFY_ACTIVE;
231
232                 case JOB_RELOAD_OR_START:
233                         return
234                                 b == JOB_RELOAD ||
235                                 b == JOB_START ||
236                                 b == JOB_VERIFY_ACTIVE;
237
238                 case JOB_RESTART:
239                         return
240                                 b == JOB_START ||
241                                 b == JOB_VERIFY_ACTIVE ||
242                                 b == JOB_RELOAD ||
243                                 b == JOB_RELOAD_OR_START ||
244                                 b == JOB_TRY_RESTART;
245
246                 case JOB_TRY_RESTART:
247                         return
248                                 b == JOB_VERIFY_ACTIVE ||
249                                 b == JOB_RELOAD;
250                 default:
251                         return false;
252
253         }
254 }
255
256 bool job_type_is_conflicting(JobType a, JobType b) {
257         assert(a >= 0 && a < _JOB_TYPE_MAX);
258         assert(b >= 0 && b < _JOB_TYPE_MAX);
259
260         return (a == JOB_STOP) != (b == JOB_STOP);
261 }
262
263 bool job_type_is_redundant(JobType a, UnitActiveState b) {
264         switch (a) {
265
266         case JOB_START:
267                 return
268                         b == UNIT_ACTIVE ||
269                         b == UNIT_RELOADING;
270
271         case JOB_STOP:
272                 return
273                         b == UNIT_INACTIVE ||
274                         b == UNIT_FAILED;
275
276         case JOB_VERIFY_ACTIVE:
277                 return
278                         b == UNIT_ACTIVE ||
279                         b == UNIT_RELOADING;
280
281         case JOB_RELOAD:
282                 return
283                         b == UNIT_RELOADING;
284
285         case JOB_RELOAD_OR_START:
286                 return
287                         b == UNIT_ACTIVATING ||
288                         b == UNIT_RELOADING;
289
290         case JOB_RESTART:
291                 return
292                         b == UNIT_ACTIVATING;
293
294         case JOB_TRY_RESTART:
295                 return
296                         b == UNIT_ACTIVATING;
297
298         default:
299                 assert_not_reached("Invalid job type");
300         }
301 }
302
303 bool job_is_runnable(Job *j) {
304         Iterator i;
305         Unit *other;
306
307         assert(j);
308         assert(j->installed);
309
310         /* Checks whether there is any job running for the units this
311          * job needs to be running after (in the case of a 'positive'
312          * job type) or before (in the case of a 'negative' job
313          * type. */
314
315         /* First check if there is an override */
316         if (j->ignore_order)
317                 return true;
318
319         if (j->type == JOB_START ||
320             j->type == JOB_VERIFY_ACTIVE ||
321             j->type == JOB_RELOAD ||
322             j->type == JOB_RELOAD_OR_START) {
323
324                 /* Immediate result is that the job is or might be
325                  * started. In this case lets wait for the
326                  * dependencies, regardless whether they are
327                  * starting or stopping something. */
328
329                 SET_FOREACH(other, j->unit->dependencies[UNIT_AFTER], i)
330                         if (other->job)
331                                 return false;
332         }
333
334         /* Also, if something else is being stopped and we should
335          * change state after it, then lets wait. */
336
337         SET_FOREACH(other, j->unit->dependencies[UNIT_BEFORE], i)
338                 if (other->job &&
339                     (other->job->type == JOB_STOP ||
340                      other->job->type == JOB_RESTART ||
341                      other->job->type == JOB_TRY_RESTART))
342                         return false;
343
344         /* This means that for a service a and a service b where b
345          * shall be started after a:
346          *
347          *  start a + start b â†’ 1st step start a, 2nd step start b
348          *  start a + stop b  â†’ 1st step stop b,  2nd step start a
349          *  stop a  + start b â†’ 1st step stop a,  2nd step start b
350          *  stop a  + stop b  â†’ 1st step stop b,  2nd step stop a
351          *
352          *  This has the side effect that restarts are properly
353          *  synchronized too. */
354
355         return true;
356 }
357
358 int job_run_and_invalidate(Job *j) {
359         int r;
360         uint32_t id;
361         Manager *m;
362
363         assert(j);
364         assert(j->installed);
365
366         if (j->in_run_queue) {
367                 LIST_REMOVE(Job, run_queue, j->manager->run_queue, j);
368                 j->in_run_queue = false;
369         }
370
371         if (j->state != JOB_WAITING)
372                 return 0;
373
374         if (!job_is_runnable(j))
375                 return -EAGAIN;
376
377         j->state = JOB_RUNNING;
378         job_add_to_dbus_queue(j);
379
380         /* While we execute this operation the job might go away (for
381          * example: because it is replaced by a new, conflicting
382          * job.) To make sure we don't access a freed job later on we
383          * store the id here, so that we can verify the job is still
384          * valid. */
385         id = j->id;
386         m = j->manager;
387
388         switch (j->type) {
389
390                 case JOB_RELOAD_OR_START:
391                         if (unit_active_state(j->unit) == UNIT_ACTIVE) {
392                                 j->type = JOB_RELOAD;
393                                 r = unit_reload(j->unit);
394                                 break;
395                         }
396                         j->type = JOB_START;
397                         /* fall through */
398
399                 case JOB_START:
400                         r = unit_start(j->unit);
401
402                         /* If this unit cannot be started, then simply wait */
403                         if (r == -EBADR)
404                                 r = 0;
405                         break;
406
407                 case JOB_VERIFY_ACTIVE: {
408                         UnitActiveState t = unit_active_state(j->unit);
409                         if (UNIT_IS_ACTIVE_OR_RELOADING(t))
410                                 r = -EALREADY;
411                         else if (t == UNIT_ACTIVATING)
412                                 r = -EAGAIN;
413                         else
414                                 r = -ENOEXEC;
415                         break;
416                 }
417
418                 case JOB_TRY_RESTART:
419                         if (UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(j->unit))) {
420                                 r = -ENOEXEC;
421                                 break;
422                         }
423                         j->type = JOB_RESTART;
424                         /* fall through */
425
426                 case JOB_STOP:
427                 case JOB_RESTART:
428                         r = unit_stop(j->unit);
429
430                         /* If this unit cannot stopped, then simply wait. */
431                         if (r == -EBADR)
432                                 r = 0;
433                         break;
434
435                 case JOB_RELOAD:
436                         r = unit_reload(j->unit);
437                         break;
438
439                 default:
440                         assert_not_reached("Unknown job type");
441         }
442
443         if ((j = manager_get_job(m, id))) {
444                 if (r == -EALREADY)
445                         r = job_finish_and_invalidate(j, JOB_DONE);
446                 else if (r == -ENOEXEC)
447                         r = job_finish_and_invalidate(j, JOB_SKIPPED);
448                 else if (r == -EAGAIN)
449                         j->state = JOB_WAITING;
450                 else if (r < 0)
451                         r = job_finish_and_invalidate(j, JOB_FAILED);
452         }
453
454         return r;
455 }
456
457 static void job_print_status_message(Unit *u, JobType t, JobResult result) {
458         assert(u);
459
460         if (t == JOB_START) {
461
462                 switch (result) {
463
464                 case JOB_DONE:
465                         unit_status_printf(u, ANSI_HIGHLIGHT_GREEN_ON "  OK  " ANSI_HIGHLIGHT_OFF, "Started %s", unit_description(u));
466                         break;
467
468                 case JOB_FAILED:
469                         unit_status_printf(u, ANSI_HIGHLIGHT_RED_ON "FAILED" ANSI_HIGHLIGHT_OFF, "Failed to start %s", unit_description(u));
470                         unit_status_printf(u, NULL, "See 'systemctl status %s' for details.", u->id);
471                         break;
472
473                 case JOB_DEPENDENCY:
474                         unit_status_printf(u, ANSI_HIGHLIGHT_RED_ON " ABORT" ANSI_HIGHLIGHT_OFF, "Dependency failed. Aborted start of %s", unit_description(u));
475                         break;
476
477                 case JOB_TIMEOUT:
478                         unit_status_printf(u, ANSI_HIGHLIGHT_RED_ON " TIME " ANSI_HIGHLIGHT_OFF, "Timed out starting %s", unit_description(u));
479                         break;
480
481                 default:
482                         ;
483                 }
484
485         } else if (t == JOB_STOP) {
486
487                 switch (result) {
488
489                 case JOB_TIMEOUT:
490                         unit_status_printf(u, ANSI_HIGHLIGHT_RED_ON " TIME " ANSI_HIGHLIGHT_OFF, "Timed out stopping %s", unit_description(u));
491                         break;
492
493                 case JOB_DONE:
494                 case JOB_FAILED:
495                         unit_status_printf(u, ANSI_HIGHLIGHT_GREEN_ON "  OK  " ANSI_HIGHLIGHT_OFF, "Stopped %s", unit_description(u));
496                         break;
497
498                 default:
499                         ;
500                 }
501         }
502 }
503
504 int job_finish_and_invalidate(Job *j, JobResult result) {
505         Unit *u;
506         Unit *other;
507         JobType t;
508         Iterator i;
509         bool recursed = false;
510
511         assert(j);
512         assert(j->installed);
513
514         job_add_to_dbus_queue(j);
515
516         /* Patch restart jobs so that they become normal start jobs */
517         if (result == JOB_DONE && j->type == JOB_RESTART) {
518
519                 log_debug("Converting job %s/%s -> %s/%s",
520                           j->unit->id, job_type_to_string(j->type),
521                           j->unit->id, job_type_to_string(JOB_START));
522
523                 j->state = JOB_WAITING;
524                 j->type = JOB_START;
525
526                 job_add_to_run_queue(j);
527
528                 u = j->unit;
529                 goto finish;
530         }
531
532         j->result = result;
533
534         log_debug("Job %s/%s finished, result=%s", j->unit->id, job_type_to_string(j->type), job_result_to_string(result));
535
536         if (result == JOB_FAILED)
537                 j->manager->n_failed_jobs ++;
538
539         u = j->unit;
540         t = j->type;
541         job_free(j);
542
543         job_print_status_message(u, t, result);
544
545         /* Fail depending jobs on failure */
546         if (result != JOB_DONE) {
547
548                 if (t == JOB_START ||
549                     t == JOB_VERIFY_ACTIVE ||
550                     t == JOB_RELOAD_OR_START) {
551
552                         SET_FOREACH(other, u->dependencies[UNIT_REQUIRED_BY], i)
553                                 if (other->job &&
554                                     (other->job->type == JOB_START ||
555                                      other->job->type == JOB_VERIFY_ACTIVE ||
556                                      other->job->type == JOB_RELOAD_OR_START)) {
557                                         job_finish_and_invalidate(other->job, JOB_DEPENDENCY);
558                                         recursed = true;
559                                 }
560
561                         SET_FOREACH(other, u->dependencies[UNIT_BOUND_BY], i)
562                                 if (other->job &&
563                                     (other->job->type == JOB_START ||
564                                      other->job->type == JOB_VERIFY_ACTIVE ||
565                                      other->job->type == JOB_RELOAD_OR_START)) {
566                                         job_finish_and_invalidate(other->job, JOB_DEPENDENCY);
567                                         recursed = true;
568                                 }
569
570                         SET_FOREACH(other, u->dependencies[UNIT_REQUIRED_BY_OVERRIDABLE], i)
571                                 if (other->job &&
572                                     !other->job->override &&
573                                     (other->job->type == JOB_START ||
574                                      other->job->type == JOB_VERIFY_ACTIVE ||
575                                      other->job->type == JOB_RELOAD_OR_START)) {
576                                         job_finish_and_invalidate(other->job, JOB_DEPENDENCY);
577                                         recursed = true;
578                                 }
579
580                 } else if (t == JOB_STOP) {
581
582                         SET_FOREACH(other, u->dependencies[UNIT_CONFLICTED_BY], i)
583                                 if (other->job &&
584                                     (other->job->type == JOB_START ||
585                                      other->job->type == JOB_VERIFY_ACTIVE ||
586                                      other->job->type == JOB_RELOAD_OR_START)) {
587                                         job_finish_and_invalidate(other->job, JOB_DEPENDENCY);
588                                         recursed = true;
589                                 }
590                 }
591         }
592
593         /* Trigger OnFailure dependencies that are not generated by
594          * the unit itself. We don't tread JOB_CANCELED as failure in
595          * this context. And JOB_FAILURE is already handled by the
596          * unit itself. */
597         if (result == JOB_TIMEOUT || result == JOB_DEPENDENCY) {
598                 log_notice("Job %s/%s failed with result '%s'.",
599                            u->id,
600                            job_type_to_string(t),
601                            job_result_to_string(result));
602
603                 unit_trigger_on_failure(u);
604         }
605
606 finish:
607         /* Try to start the next jobs that can be started */
608         SET_FOREACH(other, u->dependencies[UNIT_AFTER], i)
609                 if (other->job)
610                         job_add_to_run_queue(other->job);
611         SET_FOREACH(other, u->dependencies[UNIT_BEFORE], i)
612                 if (other->job)
613                         job_add_to_run_queue(other->job);
614
615         manager_check_finished(u->manager);
616
617         return recursed;
618 }
619
620 int job_start_timer(Job *j) {
621         struct itimerspec its;
622         struct epoll_event ev;
623         int fd, r;
624         assert(j);
625
626         if (j->unit->job_timeout <= 0 ||
627             j->timer_watch.type == WATCH_JOB_TIMER)
628                 return 0;
629
630         assert(j->timer_watch.type == WATCH_INVALID);
631
632         if ((fd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK|TFD_CLOEXEC)) < 0) {
633                 r = -errno;
634                 goto fail;
635         }
636
637         zero(its);
638         timespec_store(&its.it_value, j->unit->job_timeout);
639
640         if (timerfd_settime(fd, 0, &its, NULL) < 0) {
641                 r = -errno;
642                 goto fail;
643         }
644
645         zero(ev);
646         ev.data.ptr = &j->timer_watch;
647         ev.events = EPOLLIN;
648
649         if (epoll_ctl(j->manager->epoll_fd, EPOLL_CTL_ADD, fd, &ev) < 0) {
650                 r = -errno;
651                 goto fail;
652         }
653
654         j->timer_watch.type = WATCH_JOB_TIMER;
655         j->timer_watch.fd = fd;
656         j->timer_watch.data.job = j;
657
658         return 0;
659
660 fail:
661         if (fd >= 0)
662                 close_nointr_nofail(fd);
663
664         return r;
665 }
666
667 void job_add_to_run_queue(Job *j) {
668         assert(j);
669         assert(j->installed);
670
671         if (j->in_run_queue)
672                 return;
673
674         LIST_PREPEND(Job, run_queue, j->manager->run_queue, j);
675         j->in_run_queue = true;
676 }
677
678 void job_add_to_dbus_queue(Job *j) {
679         assert(j);
680         assert(j->installed);
681
682         if (j->in_dbus_queue)
683                 return;
684
685         /* We don't check if anybody is subscribed here, since this
686          * job might just have been created and not yet assigned to a
687          * connection/client. */
688
689         LIST_PREPEND(Job, dbus_queue, j->manager->dbus_job_queue, j);
690         j->in_dbus_queue = true;
691 }
692
693 char *job_dbus_path(Job *j) {
694         char *p;
695
696         assert(j);
697
698         if (asprintf(&p, "/org/freedesktop/systemd1/job/%lu", (unsigned long) j->id) < 0)
699                 return NULL;
700
701         return p;
702 }
703
704 void job_timer_event(Job *j, uint64_t n_elapsed, Watch *w) {
705         assert(j);
706         assert(w == &j->timer_watch);
707
708         log_warning("Job %s/%s timed out.", j->unit->id, job_type_to_string(j->type));
709         job_finish_and_invalidate(j, JOB_TIMEOUT);
710 }
711
712 static const char* const job_state_table[_JOB_STATE_MAX] = {
713         [JOB_WAITING] = "waiting",
714         [JOB_RUNNING] = "running"
715 };
716
717 DEFINE_STRING_TABLE_LOOKUP(job_state, JobState);
718
719 static const char* const job_type_table[_JOB_TYPE_MAX] = {
720         [JOB_START] = "start",
721         [JOB_VERIFY_ACTIVE] = "verify-active",
722         [JOB_STOP] = "stop",
723         [JOB_RELOAD] = "reload",
724         [JOB_RELOAD_OR_START] = "reload-or-start",
725         [JOB_RESTART] = "restart",
726         [JOB_TRY_RESTART] = "try-restart",
727 };
728
729 DEFINE_STRING_TABLE_LOOKUP(job_type, JobType);
730
731 static const char* const job_mode_table[_JOB_MODE_MAX] = {
732         [JOB_FAIL] = "fail",
733         [JOB_REPLACE] = "replace",
734         [JOB_ISOLATE] = "isolate",
735         [JOB_IGNORE_DEPENDENCIES] = "ignore-dependencies",
736         [JOB_IGNORE_REQUIREMENTS] = "ignore-requirements"
737 };
738
739 DEFINE_STRING_TABLE_LOOKUP(job_mode, JobMode);
740
741 static const char* const job_result_table[_JOB_RESULT_MAX] = {
742         [JOB_DONE] = "done",
743         [JOB_CANCELED] = "canceled",
744         [JOB_TIMEOUT] = "timeout",
745         [JOB_FAILED] = "failed",
746         [JOB_DEPENDENCY] = "dependency",
747         [JOB_SKIPPED] = "skipped"
748 };
749
750 DEFINE_STRING_TABLE_LOOKUP(job_result, JobResult);