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d6c9574f | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
60918275 | 2 | |
a7334b09 LP |
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 | |
5430f7f2 LP |
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 | |
a7334b09 LP |
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 | |
5430f7f2 | 16 | Lesser General Public License for more details. |
a7334b09 | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
60918275 | 22 | #include <assert.h> |
1ffba6fe | 23 | #include <errno.h> |
faf919f1 LP |
24 | #include <sys/timerfd.h> |
25 | #include <sys/epoll.h> | |
60918275 | 26 | |
94f04347 LP |
27 | #include "set.h" |
28 | #include "unit.h" | |
60918275 | 29 | #include "macro.h" |
94f04347 LP |
30 | #include "strv.h" |
31 | #include "load-fragment.h" | |
32 | #include "load-dropin.h" | |
f50e0a01 | 33 | #include "log.h" |
4139c1b2 | 34 | #include "dbus-job.h" |
60918275 | 35 | |
97e6a119 MS |
36 | JobBusClient* job_bus_client_new(DBusConnection *connection, const char *name) { |
37 | JobBusClient *cl; | |
38 | size_t name_len; | |
39 | ||
40 | name_len = strlen(name); | |
41 | cl = malloc0(sizeof(JobBusClient) + name_len + 1); | |
42 | if (!cl) | |
43 | return NULL; | |
44 | ||
45 | cl->bus = connection; | |
46 | memcpy(cl->name, name, name_len + 1); | |
47 | return cl; | |
48 | } | |
49 | ||
39a18c60 | 50 | Job* job_new_raw(Unit *unit) { |
60918275 LP |
51 | Job *j; |
52 | ||
39a18c60 MS |
53 | /* used for deserialization */ |
54 | ||
87f0e418 | 55 | assert(unit); |
60918275 | 56 | |
39a18c60 MS |
57 | j = new0(Job, 1); |
58 | if (!j) | |
60918275 LP |
59 | return NULL; |
60 | ||
668ad332 | 61 | j->manager = unit->manager; |
87f0e418 | 62 | j->unit = unit; |
faf919f1 LP |
63 | j->timer_watch.type = WATCH_INVALID; |
64 | ||
39a18c60 MS |
65 | return j; |
66 | } | |
67 | ||
68 | Job* job_new(Unit *unit, JobType type) { | |
69 | Job *j; | |
70 | ||
71 | assert(type < _JOB_TYPE_MAX); | |
72 | ||
73 | j = job_new_raw(unit); | |
74 | if (!j) | |
75 | return NULL; | |
76 | ||
77 | j->id = j->manager->current_job_id++; | |
78 | j->type = type; | |
79 | ||
e5b5ae50 | 80 | /* We don't link it here, that's what job_dependency() is for */ |
60918275 LP |
81 | |
82 | return j; | |
83 | } | |
84 | ||
97e7d748 | 85 | void job_free(Job *j) { |
97e6a119 MS |
86 | JobBusClient *cl; |
87 | ||
97e7d748 MS |
88 | assert(j); |
89 | assert(!j->installed); | |
02a3bcc6 MS |
90 | assert(!j->transaction_prev); |
91 | assert(!j->transaction_next); | |
92 | assert(!j->subject_list); | |
93 | assert(!j->object_list); | |
60918275 | 94 | |
c1e1601e LP |
95 | if (j->in_run_queue) |
96 | LIST_REMOVE(Job, run_queue, j->manager->run_queue, j); | |
97 | ||
98 | if (j->in_dbus_queue) | |
99 | LIST_REMOVE(Job, dbus_queue, j->manager->dbus_job_queue, j); | |
100 | ||
faf919f1 LP |
101 | if (j->timer_watch.type != WATCH_INVALID) { |
102 | assert(j->timer_watch.type == WATCH_JOB_TIMER); | |
103 | assert(j->timer_watch.data.job == j); | |
104 | assert(j->timer_watch.fd >= 0); | |
105 | ||
106 | assert_se(epoll_ctl(j->manager->epoll_fd, EPOLL_CTL_DEL, j->timer_watch.fd, NULL) >= 0); | |
107 | close_nointr_nofail(j->timer_watch.fd); | |
108 | } | |
109 | ||
97e6a119 MS |
110 | while ((cl = j->bus_client_list)) { |
111 | LIST_REMOVE(JobBusClient, client, j->bus_client_list, cl); | |
112 | free(cl); | |
113 | } | |
60918275 LP |
114 | free(j); |
115 | } | |
a66d02c3 | 116 | |
05d576f1 MS |
117 | void job_uninstall(Job *j) { |
118 | assert(j->installed); | |
d6a093d0 | 119 | assert(j->unit->job == j); |
05d576f1 MS |
120 | /* Detach from next 'bigger' objects */ |
121 | ||
39a18c60 MS |
122 | /* daemon-reload should be transparent to job observers */ |
123 | if (j->manager->n_reloading <= 0) | |
124 | bus_job_send_removed_signal(j); | |
05d576f1 | 125 | |
d6a093d0 MS |
126 | j->unit->job = NULL; |
127 | unit_add_to_gc_queue(j->unit); | |
05d576f1 MS |
128 | |
129 | hashmap_remove(j->manager->jobs, UINT32_TO_PTR(j->id)); | |
130 | j->installed = false; | |
131 | } | |
132 | ||
656bbffc MS |
133 | static bool job_type_allows_late_merge(JobType t) { |
134 | /* Tells whether it is OK to merge a job of type 't' with an already | |
135 | * running job. | |
136 | * Reloads cannot be merged this way. Think of the sequence: | |
137 | * 1. Reload of a daemon is in progress; the daemon has already loaded | |
138 | * its config file, but hasn't completed the reload operation yet. | |
139 | * 2. Edit foo's config file. | |
140 | * 3. Trigger another reload to have the daemon use the new config. | |
141 | * Should the second reload job be merged into the first one, the daemon | |
142 | * would not know about the new config. | |
143 | * JOB_RESTART jobs on the other hand can be merged, because they get | |
144 | * patched into JOB_START after stopping the unit. So if we see a | |
145 | * JOB_RESTART running, it means the unit hasn't stopped yet and at | |
146 | * this time the merge is still allowed. */ | |
147 | return !(t == JOB_RELOAD || t == JOB_RELOAD_OR_START); | |
148 | } | |
149 | ||
150 | static void job_merge_into_installed(Job *j, Job *other) { | |
151 | assert(j->installed); | |
152 | assert(j->unit == other->unit); | |
153 | ||
154 | j->type = job_type_lookup_merge(j->type, other->type); | |
155 | assert(j->type >= 0); | |
156 | ||
157 | j->override = j->override || other->override; | |
158 | } | |
159 | ||
160 | Job* job_install(Job *j) { | |
05d576f1 MS |
161 | Job *uj = j->unit->job; |
162 | ||
656bbffc MS |
163 | assert(!j->installed); |
164 | ||
05d576f1 | 165 | if (uj) { |
656bbffc | 166 | if (job_type_is_conflicting(uj->type, j->type)) |
5273510e | 167 | job_finish_and_invalidate(uj, JOB_CANCELED, true); |
656bbffc MS |
168 | else { |
169 | /* not conflicting, i.e. mergeable */ | |
170 | ||
171 | if (uj->state == JOB_WAITING || | |
172 | (job_type_allows_late_merge(j->type) && job_type_is_superset(uj->type, j->type))) { | |
173 | job_merge_into_installed(uj, j); | |
174 | log_debug("Merged into installed job %s/%s as %u", | |
175 | uj->unit->id, job_type_to_string(uj->type), (unsigned) uj->id); | |
176 | return uj; | |
177 | } else { | |
178 | /* already running and not safe to merge into */ | |
179 | /* Patch uj to become a merged job and re-run it. */ | |
180 | /* XXX It should be safer to queue j to run after uj finishes, but it is | |
181 | * not currently possible to have more than one installed job per unit. */ | |
182 | job_merge_into_installed(uj, j); | |
183 | log_debug("Merged into running job, re-running: %s/%s as %u", | |
184 | uj->unit->id, job_type_to_string(uj->type), (unsigned) uj->id); | |
185 | uj->state = JOB_WAITING; | |
186 | return uj; | |
187 | } | |
188 | } | |
05d576f1 MS |
189 | } |
190 | ||
656bbffc | 191 | /* Install the job */ |
05d576f1 MS |
192 | j->unit->job = j; |
193 | j->installed = true; | |
194 | j->manager->n_installed_jobs ++; | |
195 | log_debug("Installed new job %s/%s as %u", j->unit->id, job_type_to_string(j->type), (unsigned) j->id); | |
656bbffc | 196 | return j; |
05d576f1 MS |
197 | } |
198 | ||
39a18c60 MS |
199 | void job_install_deserialized(Job *j) { |
200 | assert(!j->installed); | |
201 | ||
202 | if (j->unit->job) { | |
203 | log_debug("Unit %s already has a job installed. Not installing deserialized job.", j->unit->id); | |
204 | return; | |
205 | } | |
206 | j->unit->job = j; | |
207 | j->installed = true; | |
208 | log_debug("Reinstalled deserialized job %s/%s as %u", j->unit->id, job_type_to_string(j->type), (unsigned) j->id); | |
209 | } | |
210 | ||
1da4264f | 211 | JobDependency* job_dependency_new(Job *subject, Job *object, bool matters, bool conflicts) { |
e5b5ae50 LP |
212 | JobDependency *l; |
213 | ||
214 | assert(object); | |
215 | ||
216 | /* Adds a new job link, which encodes that the 'subject' job | |
217 | * needs the 'object' job in some way. If 'subject' is NULL | |
218 | * this means the 'anchor' job (i.e. the one the user | |
35b8ca3a | 219 | * explicitly asked for) is the requester. */ |
e5b5ae50 | 220 | |
ceed3570 | 221 | if (!(l = new0(JobDependency, 1))) |
e5b5ae50 LP |
222 | return NULL; |
223 | ||
224 | l->subject = subject; | |
225 | l->object = object; | |
226 | l->matters = matters; | |
69dd2852 | 227 | l->conflicts = conflicts; |
e5b5ae50 | 228 | |
44d8db9e LP |
229 | if (subject) |
230 | LIST_PREPEND(JobDependency, subject, subject->subject_list, l); | |
e5b5ae50 | 231 | |
44d8db9e | 232 | LIST_PREPEND(JobDependency, object, object->object_list, l); |
e5b5ae50 LP |
233 | |
234 | return l; | |
235 | } | |
236 | ||
1da4264f | 237 | void job_dependency_free(JobDependency *l) { |
e5b5ae50 LP |
238 | assert(l); |
239 | ||
44d8db9e LP |
240 | if (l->subject) |
241 | LIST_REMOVE(JobDependency, subject, l->subject->subject_list, l); | |
e5b5ae50 | 242 | |
44d8db9e | 243 | LIST_REMOVE(JobDependency, object, l->object->object_list, l); |
e5b5ae50 LP |
244 | |
245 | free(l); | |
246 | } | |
247 | ||
1ffba6fe | 248 | void job_dump(Job *j, FILE*f, const char *prefix) { |
a66d02c3 LP |
249 | assert(j); |
250 | assert(f); | |
251 | ||
9eb63b3c LP |
252 | if (!prefix) |
253 | prefix = ""; | |
254 | ||
ceed3570 | 255 | fprintf(f, |
40d50879 LP |
256 | "%s-> Job %u:\n" |
257 | "%s\tAction: %s -> %s\n" | |
5cb5a6ff LP |
258 | "%s\tState: %s\n" |
259 | "%s\tForced: %s\n", | |
ceed3570 | 260 | prefix, j->id, |
ac155bb8 | 261 | prefix, j->unit->id, job_type_to_string(j->type), |
94f04347 | 262 | prefix, job_state_to_string(j->state), |
9e2f7c11 | 263 | prefix, yes_no(j->override)); |
a66d02c3 | 264 | } |
e5b5ae50 | 265 | |
348e27fe MS |
266 | /* |
267 | * Merging is commutative, so imagine the matrix as symmetric. We store only | |
268 | * its lower triangle to avoid duplication. We don't store the main diagonal, | |
269 | * because A merged with A is simply A. | |
270 | * | |
271 | * Merging is associative! A merged with B merged with C is the same as | |
272 | * A merged with C merged with B. | |
273 | * | |
274 | * Mergeability is transitive! If A can be merged with B and B with C then | |
275 | * A also with C. | |
276 | * | |
277 | * Also, if A merged with B cannot be merged with C, then either A or B cannot | |
278 | * be merged with C either. | |
279 | */ | |
280 | static const JobType job_merging_table[] = { | |
281 | /* What \ With * JOB_START JOB_VERIFY_ACTIVE JOB_STOP JOB_RELOAD JOB_RELOAD_OR_START JOB_RESTART JOB_TRY_RESTART */ | |
282 | /************************************************************************************************************************************/ | |
283 | /*JOB_START */ | |
284 | /*JOB_VERIFY_ACTIVE */ JOB_START, | |
285 | /*JOB_STOP */ -1, -1, | |
286 | /*JOB_RELOAD */ JOB_RELOAD_OR_START, JOB_RELOAD, -1, | |
287 | /*JOB_RELOAD_OR_START*/ JOB_RELOAD_OR_START, JOB_RELOAD_OR_START, -1, JOB_RELOAD_OR_START, | |
288 | /*JOB_RESTART */ JOB_RESTART, JOB_RESTART, -1, JOB_RESTART, JOB_RESTART, | |
289 | /*JOB_TRY_RESTART */ JOB_RESTART, JOB_TRY_RESTART, -1, JOB_TRY_RESTART, JOB_RESTART, JOB_RESTART, | |
290 | }; | |
291 | ||
292 | JobType job_type_lookup_merge(JobType a, JobType b) { | |
293 | assert_cc(ELEMENTSOF(job_merging_table) == _JOB_TYPE_MAX * (_JOB_TYPE_MAX - 1) / 2); | |
294 | assert(a >= 0 && a < _JOB_TYPE_MAX); | |
295 | assert(b >= 0 && b < _JOB_TYPE_MAX); | |
1ffba6fe LP |
296 | |
297 | if (a == b) | |
348e27fe | 298 | return a; |
1ffba6fe | 299 | |
348e27fe MS |
300 | if (a < b) { |
301 | JobType tmp = a; | |
302 | a = b; | |
303 | b = tmp; | |
1ffba6fe | 304 | } |
e094e853 | 305 | |
348e27fe | 306 | return job_merging_table[(a - 1) * a / 2 + b]; |
e094e853 | 307 | } |
cd2dbd7d | 308 | |
593fbdd2 LP |
309 | bool job_type_is_redundant(JobType a, UnitActiveState b) { |
310 | switch (a) { | |
311 | ||
312 | case JOB_START: | |
313 | return | |
314 | b == UNIT_ACTIVE || | |
032ff4af | 315 | b == UNIT_RELOADING; |
593fbdd2 LP |
316 | |
317 | case JOB_STOP: | |
318 | return | |
6124958c | 319 | b == UNIT_INACTIVE || |
fdf20a31 | 320 | b == UNIT_FAILED; |
593fbdd2 LP |
321 | |
322 | case JOB_VERIFY_ACTIVE: | |
323 | return | |
324 | b == UNIT_ACTIVE || | |
032ff4af | 325 | b == UNIT_RELOADING; |
593fbdd2 LP |
326 | |
327 | case JOB_RELOAD: | |
328 | return | |
032ff4af | 329 | b == UNIT_RELOADING; |
593fbdd2 LP |
330 | |
331 | case JOB_RELOAD_OR_START: | |
332 | return | |
333 | b == UNIT_ACTIVATING || | |
032ff4af | 334 | b == UNIT_RELOADING; |
593fbdd2 LP |
335 | |
336 | case JOB_RESTART: | |
337 | return | |
338 | b == UNIT_ACTIVATING; | |
339 | ||
340 | case JOB_TRY_RESTART: | |
341 | return | |
342 | b == UNIT_ACTIVATING; | |
343 | ||
344 | default: | |
345 | assert_not_reached("Invalid job type"); | |
346 | } | |
347 | } | |
348 | ||
5cb5a6ff | 349 | bool job_is_runnable(Job *j) { |
034c6ed7 | 350 | Iterator i; |
87f0e418 | 351 | Unit *other; |
5cb5a6ff LP |
352 | |
353 | assert(j); | |
ac1135be | 354 | assert(j->installed); |
5cb5a6ff | 355 | |
87f0e418 | 356 | /* Checks whether there is any job running for the units this |
5cb5a6ff | 357 | * job needs to be running after (in the case of a 'positive' |
e67c3609 LP |
358 | * job type) or before (in the case of a 'negative' job |
359 | * type. */ | |
360 | ||
361 | /* First check if there is an override */ | |
cebe0d41 | 362 | if (j->ignore_order) |
e67c3609 | 363 | return true; |
5cb5a6ff LP |
364 | |
365 | if (j->type == JOB_START || | |
366 | j->type == JOB_VERIFY_ACTIVE || | |
367 | j->type == JOB_RELOAD || | |
368 | j->type == JOB_RELOAD_OR_START) { | |
369 | ||
370 | /* Immediate result is that the job is or might be | |
371 | * started. In this case lets wait for the | |
372 | * dependencies, regardless whether they are | |
373 | * starting or stopping something. */ | |
374 | ||
ac155bb8 MS |
375 | SET_FOREACH(other, j->unit->dependencies[UNIT_AFTER], i) |
376 | if (other->job) | |
5cb5a6ff LP |
377 | return false; |
378 | } | |
379 | ||
380 | /* Also, if something else is being stopped and we should | |
381 | * change state after it, then lets wait. */ | |
382 | ||
ac155bb8 MS |
383 | SET_FOREACH(other, j->unit->dependencies[UNIT_BEFORE], i) |
384 | if (other->job && | |
385 | (other->job->type == JOB_STOP || | |
386 | other->job->type == JOB_RESTART || | |
387 | other->job->type == JOB_TRY_RESTART)) | |
5cb5a6ff LP |
388 | return false; |
389 | ||
390 | /* This means that for a service a and a service b where b | |
391 | * shall be started after a: | |
392 | * | |
393 | * start a + start b → 1st step start a, 2nd step start b | |
394 | * start a + stop b → 1st step stop b, 2nd step start a | |
395 | * stop a + start b → 1st step stop a, 2nd step start b | |
396 | * stop a + stop b → 1st step stop b, 2nd step stop a | |
397 | * | |
398 | * This has the side effect that restarts are properly | |
399 | * synchronized too. */ | |
400 | ||
401 | return true; | |
402 | } | |
403 | ||
bbd1a837 MS |
404 | static void job_change_type(Job *j, JobType newtype) { |
405 | log_debug("Converting job %s/%s -> %s/%s", | |
406 | j->unit->id, job_type_to_string(j->type), | |
407 | j->unit->id, job_type_to_string(newtype)); | |
408 | ||
409 | j->type = newtype; | |
410 | } | |
411 | ||
5cb5a6ff LP |
412 | int job_run_and_invalidate(Job *j) { |
413 | int r; | |
2cf19a7a LP |
414 | uint32_t id; |
415 | Manager *m; | |
ac1135be | 416 | |
5cb5a6ff | 417 | assert(j); |
ac1135be | 418 | assert(j->installed); |
5cb5a6ff | 419 | |
034c6ed7 LP |
420 | if (j->in_run_queue) { |
421 | LIST_REMOVE(Job, run_queue, j->manager->run_queue, j); | |
422 | j->in_run_queue = false; | |
423 | } | |
5cb5a6ff LP |
424 | |
425 | if (j->state != JOB_WAITING) | |
426 | return 0; | |
427 | ||
034c6ed7 LP |
428 | if (!job_is_runnable(j)) |
429 | return -EAGAIN; | |
430 | ||
83c60c9f | 431 | j->state = JOB_RUNNING; |
c1e1601e | 432 | job_add_to_dbus_queue(j); |
83c60c9f | 433 | |
2cf19a7a LP |
434 | /* While we execute this operation the job might go away (for |
435 | * example: because it is replaced by a new, conflicting | |
436 | * job.) To make sure we don't access a freed job later on we | |
437 | * store the id here, so that we can verify the job is still | |
438 | * valid. */ | |
439 | id = j->id; | |
440 | m = j->manager; | |
441 | ||
5cb5a6ff LP |
442 | switch (j->type) { |
443 | ||
dd17d388 MS |
444 | case JOB_RELOAD_OR_START: |
445 | if (unit_active_state(j->unit) == UNIT_ACTIVE) { | |
bbd1a837 | 446 | job_change_type(j, JOB_RELOAD); |
dd17d388 MS |
447 | r = unit_reload(j->unit); |
448 | break; | |
449 | } | |
bbd1a837 | 450 | job_change_type(j, JOB_START); |
dd17d388 MS |
451 | /* fall through */ |
452 | ||
5cb5a6ff | 453 | case JOB_START: |
87f0e418 | 454 | r = unit_start(j->unit); |
57339f47 | 455 | |
dd17d388 | 456 | /* If this unit cannot be started, then simply wait */ |
5cb5a6ff LP |
457 | if (r == -EBADR) |
458 | r = 0; | |
459 | break; | |
460 | ||
461 | case JOB_VERIFY_ACTIVE: { | |
87f0e418 LP |
462 | UnitActiveState t = unit_active_state(j->unit); |
463 | if (UNIT_IS_ACTIVE_OR_RELOADING(t)) | |
5cb5a6ff | 464 | r = -EALREADY; |
87f0e418 | 465 | else if (t == UNIT_ACTIVATING) |
5cb5a6ff LP |
466 | r = -EAGAIN; |
467 | else | |
468 | r = -ENOEXEC; | |
469 | break; | |
470 | } | |
471 | ||
dd17d388 MS |
472 | case JOB_TRY_RESTART: |
473 | if (UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(j->unit))) { | |
474 | r = -ENOEXEC; | |
475 | break; | |
476 | } | |
bbd1a837 | 477 | job_change_type(j, JOB_RESTART); |
dd17d388 MS |
478 | /* fall through */ |
479 | ||
5cb5a6ff | 480 | case JOB_STOP: |
dd17d388 | 481 | case JOB_RESTART: |
87f0e418 | 482 | r = unit_stop(j->unit); |
57339f47 | 483 | |
dd17d388 | 484 | /* If this unit cannot stopped, then simply wait. */ |
57339f47 LP |
485 | if (r == -EBADR) |
486 | r = 0; | |
5cb5a6ff LP |
487 | break; |
488 | ||
489 | case JOB_RELOAD: | |
87f0e418 | 490 | r = unit_reload(j->unit); |
5cb5a6ff LP |
491 | break; |
492 | ||
5cb5a6ff | 493 | default: |
44d8db9e | 494 | assert_not_reached("Unknown job type"); |
5cb5a6ff LP |
495 | } |
496 | ||
2cf19a7a LP |
497 | if ((j = manager_get_job(m, id))) { |
498 | if (r == -EALREADY) | |
5273510e | 499 | r = job_finish_and_invalidate(j, JOB_DONE, true); |
d68201e9 | 500 | else if (r == -ENOEXEC) |
5273510e | 501 | r = job_finish_and_invalidate(j, JOB_SKIPPED, true); |
2cf19a7a LP |
502 | else if (r == -EAGAIN) |
503 | j->state = JOB_WAITING; | |
504 | else if (r < 0) | |
5273510e | 505 | r = job_finish_and_invalidate(j, JOB_FAILED, true); |
2cf19a7a | 506 | } |
5cb5a6ff LP |
507 | |
508 | return r; | |
509 | } | |
510 | ||
e02cd6f7 LP |
511 | static void job_print_status_message(Unit *u, JobType t, JobResult result) { |
512 | assert(u); | |
513 | ||
514 | if (t == JOB_START) { | |
515 | ||
516 | switch (result) { | |
517 | ||
518 | case JOB_DONE: | |
69120666 | 519 | if (u->condition_result) |
78ff1acd | 520 | unit_status_printf(u, ANSI_HIGHLIGHT_GREEN_ON " OK " ANSI_HIGHLIGHT_OFF, "Started %s.", unit_description(u)); |
e02cd6f7 LP |
521 | break; |
522 | ||
523 | case JOB_FAILED: | |
78ff1acd | 524 | unit_status_printf(u, ANSI_HIGHLIGHT_RED_ON "FAILED" ANSI_HIGHLIGHT_OFF, "Failed to start %s.", unit_description(u)); |
ac155bb8 | 525 | unit_status_printf(u, NULL, "See 'systemctl status %s' for details.", u->id); |
e02cd6f7 LP |
526 | break; |
527 | ||
528 | case JOB_DEPENDENCY: | |
78ff1acd | 529 | unit_status_printf(u, ANSI_HIGHLIGHT_RED_ON " ABORT" ANSI_HIGHLIGHT_OFF, "Dependency failed. Aborted start of %s.", unit_description(u)); |
e02cd6f7 LP |
530 | break; |
531 | ||
532 | case JOB_TIMEOUT: | |
78ff1acd | 533 | unit_status_printf(u, ANSI_HIGHLIGHT_RED_ON " TIME " ANSI_HIGHLIGHT_OFF, "Timed out starting %s.", unit_description(u)); |
e02cd6f7 LP |
534 | break; |
535 | ||
536 | default: | |
537 | ; | |
538 | } | |
539 | ||
540 | } else if (t == JOB_STOP) { | |
541 | ||
542 | switch (result) { | |
543 | ||
544 | case JOB_TIMEOUT: | |
78ff1acd | 545 | unit_status_printf(u, ANSI_HIGHLIGHT_RED_ON " TIME " ANSI_HIGHLIGHT_OFF, "Timed out stopping %s.", unit_description(u)); |
e02cd6f7 LP |
546 | break; |
547 | ||
548 | case JOB_DONE: | |
549 | case JOB_FAILED: | |
78ff1acd | 550 | unit_status_printf(u, ANSI_HIGHLIGHT_GREEN_ON " OK " ANSI_HIGHLIGHT_OFF, "Stopped %s.", unit_description(u)); |
e02cd6f7 LP |
551 | break; |
552 | ||
553 | default: | |
554 | ; | |
555 | } | |
556 | } | |
557 | } | |
558 | ||
5273510e | 559 | int job_finish_and_invalidate(Job *j, JobResult result, bool recursive) { |
87f0e418 LP |
560 | Unit *u; |
561 | Unit *other; | |
b866264a | 562 | JobType t; |
034c6ed7 | 563 | Iterator i; |
5cb5a6ff LP |
564 | |
565 | assert(j); | |
ac1135be | 566 | assert(j->installed); |
5cb5a6ff | 567 | |
c1e1601e | 568 | job_add_to_dbus_queue(j); |
f50e0a01 | 569 | |
034c6ed7 | 570 | /* Patch restart jobs so that they become normal start jobs */ |
dd17d388 | 571 | if (result == JOB_DONE && j->type == JOB_RESTART) { |
f50e0a01 | 572 | |
bbd1a837 | 573 | job_change_type(j, JOB_START); |
9c2d9caa | 574 | j->state = JOB_WAITING; |
cc42e081 LP |
575 | |
576 | job_add_to_run_queue(j); | |
57981b98 LP |
577 | |
578 | u = j->unit; | |
579 | goto finish; | |
5cb5a6ff LP |
580 | } |
581 | ||
5d44db4a | 582 | j->result = result; |
76bf48b7 | 583 | |
ac155bb8 | 584 | log_debug("Job %s/%s finished, result=%s", j->unit->id, job_type_to_string(j->type), job_result_to_string(result)); |
9c2d9caa | 585 | |
5d44db4a | 586 | if (result == JOB_FAILED) |
76bf48b7 LP |
587 | j->manager->n_failed_jobs ++; |
588 | ||
87f0e418 | 589 | u = j->unit; |
5cb5a6ff | 590 | t = j->type; |
97e7d748 | 591 | job_uninstall(j); |
5cb5a6ff LP |
592 | job_free(j); |
593 | ||
e02cd6f7 | 594 | job_print_status_message(u, t, result); |
9e58ff9c | 595 | |
5cb5a6ff | 596 | /* Fail depending jobs on failure */ |
5273510e | 597 | if (result != JOB_DONE && recursive) { |
5cb5a6ff LP |
598 | |
599 | if (t == JOB_START || | |
600 | t == JOB_VERIFY_ACTIVE || | |
601 | t == JOB_RELOAD_OR_START) { | |
602 | ||
ac155bb8 MS |
603 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRED_BY], i) |
604 | if (other->job && | |
605 | (other->job->type == JOB_START || | |
606 | other->job->type == JOB_VERIFY_ACTIVE || | |
5273510e MS |
607 | other->job->type == JOB_RELOAD_OR_START)) |
608 | job_finish_and_invalidate(other->job, JOB_DEPENDENCY, true); | |
5cb5a6ff | 609 | |
ac155bb8 MS |
610 | SET_FOREACH(other, u->dependencies[UNIT_BOUND_BY], i) |
611 | if (other->job && | |
612 | (other->job->type == JOB_START || | |
613 | other->job->type == JOB_VERIFY_ACTIVE || | |
5273510e MS |
614 | other->job->type == JOB_RELOAD_OR_START)) |
615 | job_finish_and_invalidate(other->job, JOB_DEPENDENCY, true); | |
e6a3ff95 | 616 | |
ac155bb8 MS |
617 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRED_BY_OVERRIDABLE], i) |
618 | if (other->job && | |
619 | !other->job->override && | |
620 | (other->job->type == JOB_START || | |
621 | other->job->type == JOB_VERIFY_ACTIVE || | |
5273510e MS |
622 | other->job->type == JOB_RELOAD_OR_START)) |
623 | job_finish_and_invalidate(other->job, JOB_DEPENDENCY, true); | |
5cb5a6ff LP |
624 | |
625 | } else if (t == JOB_STOP) { | |
626 | ||
ac155bb8 MS |
627 | SET_FOREACH(other, u->dependencies[UNIT_CONFLICTED_BY], i) |
628 | if (other->job && | |
629 | (other->job->type == JOB_START || | |
630 | other->job->type == JOB_VERIFY_ACTIVE || | |
5273510e MS |
631 | other->job->type == JOB_RELOAD_OR_START)) |
632 | job_finish_and_invalidate(other->job, JOB_DEPENDENCY, true); | |
5cb5a6ff LP |
633 | } |
634 | } | |
635 | ||
c0daa706 LP |
636 | /* Trigger OnFailure dependencies that are not generated by |
637 | * the unit itself. We don't tread JOB_CANCELED as failure in | |
638 | * this context. And JOB_FAILURE is already handled by the | |
639 | * unit itself. */ | |
222ae6a8 LP |
640 | if (result == JOB_TIMEOUT || result == JOB_DEPENDENCY) { |
641 | log_notice("Job %s/%s failed with result '%s'.", | |
ac155bb8 | 642 | u->id, |
222ae6a8 LP |
643 | job_type_to_string(t), |
644 | job_result_to_string(result)); | |
645 | ||
c0daa706 | 646 | unit_trigger_on_failure(u); |
222ae6a8 | 647 | } |
c0daa706 | 648 | |
57981b98 | 649 | finish: |
5cb5a6ff | 650 | /* Try to start the next jobs that can be started */ |
ac155bb8 MS |
651 | SET_FOREACH(other, u->dependencies[UNIT_AFTER], i) |
652 | if (other->job) | |
653 | job_add_to_run_queue(other->job); | |
654 | SET_FOREACH(other, u->dependencies[UNIT_BEFORE], i) | |
655 | if (other->job) | |
656 | job_add_to_run_queue(other->job); | |
5cb5a6ff | 657 | |
ac155bb8 | 658 | manager_check_finished(u->manager); |
b0c918b9 | 659 | |
5273510e | 660 | return 0; |
5cb5a6ff | 661 | } |
034c6ed7 | 662 | |
faf919f1 LP |
663 | int job_start_timer(Job *j) { |
664 | struct itimerspec its; | |
665 | struct epoll_event ev; | |
666 | int fd, r; | |
667 | assert(j); | |
668 | ||
ac155bb8 | 669 | if (j->unit->job_timeout <= 0 || |
faf919f1 LP |
670 | j->timer_watch.type == WATCH_JOB_TIMER) |
671 | return 0; | |
672 | ||
673 | assert(j->timer_watch.type == WATCH_INVALID); | |
674 | ||
675 | if ((fd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK|TFD_CLOEXEC)) < 0) { | |
676 | r = -errno; | |
677 | goto fail; | |
678 | } | |
679 | ||
680 | zero(its); | |
ac155bb8 | 681 | timespec_store(&its.it_value, j->unit->job_timeout); |
faf919f1 LP |
682 | |
683 | if (timerfd_settime(fd, 0, &its, NULL) < 0) { | |
684 | r = -errno; | |
685 | goto fail; | |
686 | } | |
687 | ||
688 | zero(ev); | |
689 | ev.data.ptr = &j->timer_watch; | |
690 | ev.events = EPOLLIN; | |
691 | ||
692 | if (epoll_ctl(j->manager->epoll_fd, EPOLL_CTL_ADD, fd, &ev) < 0) { | |
693 | r = -errno; | |
694 | goto fail; | |
695 | } | |
696 | ||
697 | j->timer_watch.type = WATCH_JOB_TIMER; | |
698 | j->timer_watch.fd = fd; | |
699 | j->timer_watch.data.job = j; | |
700 | ||
701 | return 0; | |
702 | ||
703 | fail: | |
704 | if (fd >= 0) | |
705 | close_nointr_nofail(fd); | |
706 | ||
707 | return r; | |
708 | } | |
709 | ||
c1e1601e | 710 | void job_add_to_run_queue(Job *j) { |
034c6ed7 | 711 | assert(j); |
ac1135be | 712 | assert(j->installed); |
034c6ed7 LP |
713 | |
714 | if (j->in_run_queue) | |
715 | return; | |
716 | ||
717 | LIST_PREPEND(Job, run_queue, j->manager->run_queue, j); | |
718 | j->in_run_queue = true; | |
719 | } | |
94f04347 | 720 | |
c1e1601e LP |
721 | void job_add_to_dbus_queue(Job *j) { |
722 | assert(j); | |
723 | assert(j->installed); | |
724 | ||
725 | if (j->in_dbus_queue) | |
726 | return; | |
727 | ||
a567261a LP |
728 | /* We don't check if anybody is subscribed here, since this |
729 | * job might just have been created and not yet assigned to a | |
730 | * connection/client. */ | |
94b6dfa2 | 731 | |
c1e1601e LP |
732 | LIST_PREPEND(Job, dbus_queue, j->manager->dbus_job_queue, j); |
733 | j->in_dbus_queue = true; | |
734 | } | |
735 | ||
ea430986 LP |
736 | char *job_dbus_path(Job *j) { |
737 | char *p; | |
738 | ||
739 | assert(j); | |
740 | ||
741 | if (asprintf(&p, "/org/freedesktop/systemd1/job/%lu", (unsigned long) j->id) < 0) | |
742 | return NULL; | |
743 | ||
744 | return p; | |
745 | } | |
746 | ||
faf919f1 LP |
747 | void job_timer_event(Job *j, uint64_t n_elapsed, Watch *w) { |
748 | assert(j); | |
749 | assert(w == &j->timer_watch); | |
750 | ||
ac155bb8 | 751 | log_warning("Job %s/%s timed out.", j->unit->id, job_type_to_string(j->type)); |
5273510e | 752 | job_finish_and_invalidate(j, JOB_TIMEOUT, true); |
faf919f1 LP |
753 | } |
754 | ||
39a18c60 MS |
755 | int job_serialize(Job *j, FILE *f, FDSet *fds) { |
756 | fprintf(f, "job-id=%u\n", j->id); | |
757 | fprintf(f, "job-type=%s\n", job_type_to_string(j->type)); | |
758 | fprintf(f, "job-state=%s\n", job_state_to_string(j->state)); | |
759 | fprintf(f, "job-override=%s\n", yes_no(j->override)); | |
760 | fprintf(f, "job-sent-dbus-new-signal=%s\n", yes_no(j->sent_dbus_new_signal)); | |
761 | fprintf(f, "job-ignore-order=%s\n", yes_no(j->ignore_order)); | |
762 | /* Cannot save bus clients. Just note the fact that we're losing | |
763 | * them. job_send_message() will fallback to broadcasting. */ | |
764 | fprintf(f, "job-forgot-bus-clients=%s\n", | |
765 | yes_no(j->forgot_bus_clients || j->bus_client_list)); | |
766 | if (j->timer_watch.type == WATCH_JOB_TIMER) { | |
767 | int copy = fdset_put_dup(fds, j->timer_watch.fd); | |
768 | if (copy < 0) | |
769 | return copy; | |
770 | fprintf(f, "job-timer-watch-fd=%d\n", copy); | |
771 | } | |
772 | ||
773 | /* End marker */ | |
774 | fputc('\n', f); | |
775 | return 0; | |
776 | } | |
777 | ||
778 | int job_deserialize(Job *j, FILE *f, FDSet *fds) { | |
779 | for (;;) { | |
780 | char line[LINE_MAX], *l, *v; | |
781 | size_t k; | |
782 | ||
783 | if (!fgets(line, sizeof(line), f)) { | |
784 | if (feof(f)) | |
785 | return 0; | |
786 | return -errno; | |
787 | } | |
788 | ||
789 | char_array_0(line); | |
790 | l = strstrip(line); | |
791 | ||
792 | /* End marker */ | |
793 | if (l[0] == 0) | |
794 | return 0; | |
795 | ||
796 | k = strcspn(l, "="); | |
797 | ||
798 | if (l[k] == '=') { | |
799 | l[k] = 0; | |
800 | v = l+k+1; | |
801 | } else | |
802 | v = l+k; | |
803 | ||
804 | if (streq(l, "job-id")) { | |
805 | if (safe_atou32(v, &j->id) < 0) | |
806 | log_debug("Failed to parse job id value %s", v); | |
807 | } else if (streq(l, "job-type")) { | |
808 | JobType t = job_type_from_string(v); | |
809 | if (t < 0) | |
810 | log_debug("Failed to parse job type %s", v); | |
811 | else | |
812 | j->type = t; | |
813 | } else if (streq(l, "job-state")) { | |
814 | JobState s = job_state_from_string(v); | |
815 | if (s < 0) | |
816 | log_debug("Failed to parse job state %s", v); | |
817 | else | |
818 | j->state = s; | |
819 | } else if (streq(l, "job-override")) { | |
820 | int b = parse_boolean(v); | |
821 | if (b < 0) | |
822 | log_debug("Failed to parse job override flag %s", v); | |
823 | else | |
824 | j->override = j->override || b; | |
825 | } else if (streq(l, "job-sent-dbus-new-signal")) { | |
826 | int b = parse_boolean(v); | |
827 | if (b < 0) | |
828 | log_debug("Failed to parse job sent_dbus_new_signal flag %s", v); | |
829 | else | |
830 | j->sent_dbus_new_signal = j->sent_dbus_new_signal || b; | |
831 | } else if (streq(l, "job-ignore-order")) { | |
832 | int b = parse_boolean(v); | |
833 | if (b < 0) | |
834 | log_debug("Failed to parse job ignore_order flag %s", v); | |
835 | else | |
836 | j->ignore_order = j->ignore_order || b; | |
837 | } else if (streq(l, "job-forgot-bus-clients")) { | |
838 | int b = parse_boolean(v); | |
839 | if (b < 0) | |
840 | log_debug("Failed to parse job forgot_bus_clients flag %s", v); | |
841 | else | |
842 | j->forgot_bus_clients = j->forgot_bus_clients || b; | |
843 | } else if (streq(l, "job-timer-watch-fd")) { | |
844 | int fd; | |
845 | if (safe_atoi(v, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
846 | log_debug("Failed to parse job-timer-watch-fd value %s", v); | |
847 | else { | |
848 | if (j->timer_watch.type == WATCH_JOB_TIMER) | |
849 | close_nointr_nofail(j->timer_watch.fd); | |
850 | ||
851 | j->timer_watch.type = WATCH_JOB_TIMER; | |
852 | j->timer_watch.fd = fdset_remove(fds, fd); | |
853 | j->timer_watch.data.job = j; | |
854 | } | |
855 | } | |
856 | } | |
857 | } | |
858 | ||
859 | int job_coldplug(Job *j) { | |
860 | struct epoll_event ev; | |
861 | ||
862 | if (j->timer_watch.type != WATCH_JOB_TIMER) | |
863 | return 0; | |
864 | ||
865 | zero(ev); | |
866 | ev.data.ptr = &j->timer_watch; | |
867 | ev.events = EPOLLIN; | |
868 | ||
869 | if (epoll_ctl(j->manager->epoll_fd, EPOLL_CTL_ADD, j->timer_watch.fd, &ev) < 0) | |
870 | return -errno; | |
871 | ||
872 | return 0; | |
873 | } | |
874 | ||
94f04347 LP |
875 | static const char* const job_state_table[_JOB_STATE_MAX] = { |
876 | [JOB_WAITING] = "waiting", | |
877 | [JOB_RUNNING] = "running" | |
878 | }; | |
879 | ||
880 | DEFINE_STRING_TABLE_LOOKUP(job_state, JobState); | |
881 | ||
882 | static const char* const job_type_table[_JOB_TYPE_MAX] = { | |
883 | [JOB_START] = "start", | |
884 | [JOB_VERIFY_ACTIVE] = "verify-active", | |
885 | [JOB_STOP] = "stop", | |
886 | [JOB_RELOAD] = "reload", | |
887 | [JOB_RELOAD_OR_START] = "reload-or-start", | |
888 | [JOB_RESTART] = "restart", | |
889 | [JOB_TRY_RESTART] = "try-restart", | |
890 | }; | |
891 | ||
892 | DEFINE_STRING_TABLE_LOOKUP(job_type, JobType); | |
b548631a LP |
893 | |
894 | static const char* const job_mode_table[_JOB_MODE_MAX] = { | |
895 | [JOB_FAIL] = "fail", | |
c497c7a9 | 896 | [JOB_REPLACE] = "replace", |
e67c3609 | 897 | [JOB_ISOLATE] = "isolate", |
cebe0d41 LP |
898 | [JOB_IGNORE_DEPENDENCIES] = "ignore-dependencies", |
899 | [JOB_IGNORE_REQUIREMENTS] = "ignore-requirements" | |
b548631a LP |
900 | }; |
901 | ||
902 | DEFINE_STRING_TABLE_LOOKUP(job_mode, JobMode); | |
5d44db4a LP |
903 | |
904 | static const char* const job_result_table[_JOB_RESULT_MAX] = { | |
905 | [JOB_DONE] = "done", | |
906 | [JOB_CANCELED] = "canceled", | |
907 | [JOB_TIMEOUT] = "timeout", | |
908 | [JOB_FAILED] = "failed", | |
d68201e9 LP |
909 | [JOB_DEPENDENCY] = "dependency", |
910 | [JOB_SKIPPED] = "skipped" | |
5d44db4a LP |
911 | }; |
912 | ||
913 | DEFINE_STRING_TABLE_LOOKUP(job_result, JobResult); |