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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 | ||
1ffba6fe | 22 | #include <errno.h> |
60918275 | 23 | |
718db961 LP |
24 | #include "sd-id128.h" |
25 | #include "sd-messages.h" | |
94f04347 LP |
26 | #include "set.h" |
27 | #include "unit.h" | |
60918275 | 28 | #include "macro.h" |
94f04347 | 29 | #include "strv.h" |
f50e0a01 | 30 | #include "log.h" |
4139c1b2 | 31 | #include "dbus-job.h" |
c65eb836 | 32 | #include "special.h" |
f485606b | 33 | #include "async.h" |
c65eb836 | 34 | #include "virt.h" |
8f8f05a9 | 35 | #include "dbus.h" |
288a74cc | 36 | #include "terminal-util.h" |
97e6a119 | 37 | |
39a18c60 | 38 | Job* job_new_raw(Unit *unit) { |
60918275 LP |
39 | Job *j; |
40 | ||
39a18c60 MS |
41 | /* used for deserialization */ |
42 | ||
87f0e418 | 43 | assert(unit); |
60918275 | 44 | |
39a18c60 MS |
45 | j = new0(Job, 1); |
46 | if (!j) | |
60918275 LP |
47 | return NULL; |
48 | ||
668ad332 | 49 | j->manager = unit->manager; |
87f0e418 | 50 | j->unit = unit; |
e0209d83 | 51 | j->type = _JOB_TYPE_INVALID; |
faf919f1 | 52 | |
39a18c60 MS |
53 | return j; |
54 | } | |
55 | ||
56 | Job* job_new(Unit *unit, JobType type) { | |
57 | Job *j; | |
58 | ||
59 | assert(type < _JOB_TYPE_MAX); | |
60 | ||
61 | j = job_new_raw(unit); | |
62 | if (!j) | |
63 | return NULL; | |
64 | ||
65 | j->id = j->manager->current_job_id++; | |
66 | j->type = type; | |
67 | ||
e5b5ae50 | 68 | /* We don't link it here, that's what job_dependency() is for */ |
60918275 LP |
69 | |
70 | return j; | |
71 | } | |
72 | ||
97e7d748 MS |
73 | void job_free(Job *j) { |
74 | assert(j); | |
75 | assert(!j->installed); | |
02a3bcc6 MS |
76 | assert(!j->transaction_prev); |
77 | assert(!j->transaction_next); | |
78 | assert(!j->subject_list); | |
79 | assert(!j->object_list); | |
60918275 | 80 | |
c1e1601e | 81 | if (j->in_run_queue) |
71fda00f | 82 | LIST_REMOVE(run_queue, j->manager->run_queue, j); |
c1e1601e LP |
83 | |
84 | if (j->in_dbus_queue) | |
71fda00f | 85 | LIST_REMOVE(dbus_queue, j->manager->dbus_job_queue, j); |
c1e1601e | 86 | |
718db961 | 87 | sd_event_source_unref(j->timer_event_source); |
faf919f1 | 88 | |
b39a2770 SW |
89 | sd_bus_track_unref(j->clients); |
90 | strv_free(j->deserialized_clients); | |
faf919f1 | 91 | |
60918275 LP |
92 | free(j); |
93 | } | |
a66d02c3 | 94 | |
9c3349e2 LP |
95 | static void job_set_state(Job *j, JobState state) { |
96 | assert(j); | |
97 | assert(state >= 0); | |
98 | assert(state < _JOB_STATE_MAX); | |
99 | ||
100 | if (j->state == state) | |
101 | return; | |
102 | ||
103 | j->state = state; | |
104 | ||
105 | if (!j->installed) | |
106 | return; | |
107 | ||
108 | if (j->state == JOB_RUNNING) | |
109 | j->unit->manager->n_running_jobs++; | |
110 | else { | |
111 | assert(j->state == JOB_WAITING); | |
112 | assert(j->unit->manager->n_running_jobs > 0); | |
113 | ||
114 | j->unit->manager->n_running_jobs--; | |
115 | ||
116 | if (j->unit->manager->n_running_jobs <= 0) | |
117 | j->unit->manager->jobs_in_progress_event_source = sd_event_source_unref(j->unit->manager->jobs_in_progress_event_source); | |
118 | } | |
119 | } | |
120 | ||
05d576f1 | 121 | void job_uninstall(Job *j) { |
e0209d83 MS |
122 | Job **pj; |
123 | ||
05d576f1 | 124 | assert(j->installed); |
e0209d83 | 125 | |
9c3349e2 LP |
126 | job_set_state(j, JOB_WAITING); |
127 | ||
e0209d83 MS |
128 | pj = (j->type == JOB_NOP) ? &j->unit->nop_job : &j->unit->job; |
129 | assert(*pj == j); | |
130 | ||
05d576f1 MS |
131 | /* Detach from next 'bigger' objects */ |
132 | ||
39a18c60 MS |
133 | /* daemon-reload should be transparent to job observers */ |
134 | if (j->manager->n_reloading <= 0) | |
135 | bus_job_send_removed_signal(j); | |
05d576f1 | 136 | |
e0209d83 MS |
137 | *pj = NULL; |
138 | ||
d6a093d0 | 139 | unit_add_to_gc_queue(j->unit); |
05d576f1 MS |
140 | |
141 | hashmap_remove(j->manager->jobs, UINT32_TO_PTR(j->id)); | |
142 | j->installed = false; | |
143 | } | |
144 | ||
656bbffc MS |
145 | static bool job_type_allows_late_merge(JobType t) { |
146 | /* Tells whether it is OK to merge a job of type 't' with an already | |
147 | * running job. | |
148 | * Reloads cannot be merged this way. Think of the sequence: | |
149 | * 1. Reload of a daemon is in progress; the daemon has already loaded | |
150 | * its config file, but hasn't completed the reload operation yet. | |
151 | * 2. Edit foo's config file. | |
152 | * 3. Trigger another reload to have the daemon use the new config. | |
153 | * Should the second reload job be merged into the first one, the daemon | |
154 | * would not know about the new config. | |
155 | * JOB_RESTART jobs on the other hand can be merged, because they get | |
156 | * patched into JOB_START after stopping the unit. So if we see a | |
157 | * JOB_RESTART running, it means the unit hasn't stopped yet and at | |
158 | * this time the merge is still allowed. */ | |
e0209d83 | 159 | return t != JOB_RELOAD; |
656bbffc MS |
160 | } |
161 | ||
162 | static void job_merge_into_installed(Job *j, Job *other) { | |
163 | assert(j->installed); | |
164 | assert(j->unit == other->unit); | |
165 | ||
e0209d83 MS |
166 | if (j->type != JOB_NOP) |
167 | job_type_merge_and_collapse(&j->type, other->type, j->unit); | |
168 | else | |
169 | assert(other->type == JOB_NOP); | |
656bbffc MS |
170 | |
171 | j->override = j->override || other->override; | |
23ade460 | 172 | j->irreversible = j->irreversible || other->irreversible; |
e45460d6 | 173 | j->ignore_order = j->ignore_order || other->ignore_order; |
656bbffc MS |
174 | } |
175 | ||
176 | Job* job_install(Job *j) { | |
e0209d83 MS |
177 | Job **pj; |
178 | Job *uj; | |
05d576f1 | 179 | |
656bbffc | 180 | assert(!j->installed); |
e0209d83 | 181 | assert(j->type < _JOB_TYPE_MAX_IN_TRANSACTION); |
9c3349e2 | 182 | assert(j->state == JOB_WAITING); |
e0209d83 MS |
183 | |
184 | pj = (j->type == JOB_NOP) ? &j->unit->nop_job : &j->unit->job; | |
185 | uj = *pj; | |
656bbffc | 186 | |
05d576f1 | 187 | if (uj) { |
61da906a | 188 | if (job_type_is_conflicting(uj->type, j->type)) |
1abc85b8 | 189 | job_finish_and_invalidate(uj, JOB_CANCELED, false); |
656bbffc MS |
190 | else { |
191 | /* not conflicting, i.e. mergeable */ | |
192 | ||
61da906a | 193 | if (uj->state == JOB_WAITING || |
656bbffc MS |
194 | (job_type_allows_late_merge(j->type) && job_type_is_superset(uj->type, j->type))) { |
195 | job_merge_into_installed(uj, j); | |
f2341e0a | 196 | log_unit_debug(uj->unit, |
66870f90 ZJS |
197 | "Merged into installed job %s/%s as %u", |
198 | uj->unit->id, job_type_to_string(uj->type), (unsigned) uj->id); | |
656bbffc MS |
199 | return uj; |
200 | } else { | |
201 | /* already running and not safe to merge into */ | |
202 | /* Patch uj to become a merged job and re-run it. */ | |
203 | /* XXX It should be safer to queue j to run after uj finishes, but it is | |
204 | * not currently possible to have more than one installed job per unit. */ | |
205 | job_merge_into_installed(uj, j); | |
f2341e0a | 206 | log_unit_debug(uj->unit, |
66870f90 ZJS |
207 | "Merged into running job, re-running: %s/%s as %u", |
208 | uj->unit->id, job_type_to_string(uj->type), (unsigned) uj->id); | |
9c3349e2 LP |
209 | |
210 | job_set_state(uj, JOB_WAITING); | |
656bbffc MS |
211 | return uj; |
212 | } | |
213 | } | |
05d576f1 MS |
214 | } |
215 | ||
656bbffc | 216 | /* Install the job */ |
e0209d83 | 217 | *pj = j; |
05d576f1 | 218 | j->installed = true; |
9c3349e2 | 219 | |
05d576f1 | 220 | j->manager->n_installed_jobs ++; |
f2341e0a | 221 | log_unit_debug(j->unit, |
66870f90 ZJS |
222 | "Installed new job %s/%s as %u", |
223 | j->unit->id, job_type_to_string(j->type), (unsigned) j->id); | |
656bbffc | 224 | return j; |
05d576f1 MS |
225 | } |
226 | ||
e0209d83 MS |
227 | int job_install_deserialized(Job *j) { |
228 | Job **pj; | |
229 | ||
39a18c60 MS |
230 | assert(!j->installed); |
231 | ||
e0209d83 MS |
232 | if (j->type < 0 || j->type >= _JOB_TYPE_MAX_IN_TRANSACTION) { |
233 | log_debug("Invalid job type %s in deserialization.", strna(job_type_to_string(j->type))); | |
234 | return -EINVAL; | |
235 | } | |
236 | ||
237 | pj = (j->type == JOB_NOP) ? &j->unit->nop_job : &j->unit->job; | |
e0209d83 | 238 | if (*pj) { |
f2341e0a | 239 | log_unit_debug(j->unit, "Unit already has a job installed. Not installing deserialized job."); |
e0209d83 | 240 | return -EEXIST; |
39a18c60 | 241 | } |
9c3349e2 | 242 | |
e0209d83 | 243 | *pj = j; |
39a18c60 | 244 | j->installed = true; |
9c3349e2 LP |
245 | |
246 | if (j->state == JOB_RUNNING) | |
247 | j->unit->manager->n_running_jobs++; | |
248 | ||
f2341e0a | 249 | log_unit_debug(j->unit, |
66870f90 ZJS |
250 | "Reinstalled deserialized job %s/%s as %u", |
251 | j->unit->id, job_type_to_string(j->type), (unsigned) j->id); | |
e0209d83 | 252 | return 0; |
39a18c60 MS |
253 | } |
254 | ||
1da4264f | 255 | JobDependency* job_dependency_new(Job *subject, Job *object, bool matters, bool conflicts) { |
e5b5ae50 LP |
256 | JobDependency *l; |
257 | ||
258 | assert(object); | |
259 | ||
260 | /* Adds a new job link, which encodes that the 'subject' job | |
261 | * needs the 'object' job in some way. If 'subject' is NULL | |
262 | * this means the 'anchor' job (i.e. the one the user | |
35b8ca3a | 263 | * explicitly asked for) is the requester. */ |
e5b5ae50 | 264 | |
ceed3570 | 265 | if (!(l = new0(JobDependency, 1))) |
e5b5ae50 LP |
266 | return NULL; |
267 | ||
268 | l->subject = subject; | |
269 | l->object = object; | |
270 | l->matters = matters; | |
69dd2852 | 271 | l->conflicts = conflicts; |
e5b5ae50 | 272 | |
44d8db9e | 273 | if (subject) |
71fda00f | 274 | LIST_PREPEND(subject, subject->subject_list, l); |
e5b5ae50 | 275 | |
71fda00f | 276 | LIST_PREPEND(object, object->object_list, l); |
e5b5ae50 LP |
277 | |
278 | return l; | |
279 | } | |
280 | ||
1da4264f | 281 | void job_dependency_free(JobDependency *l) { |
e5b5ae50 LP |
282 | assert(l); |
283 | ||
44d8db9e | 284 | if (l->subject) |
71fda00f | 285 | LIST_REMOVE(subject, l->subject->subject_list, l); |
e5b5ae50 | 286 | |
71fda00f | 287 | LIST_REMOVE(object, l->object->object_list, l); |
e5b5ae50 LP |
288 | |
289 | free(l); | |
290 | } | |
291 | ||
1ffba6fe | 292 | void job_dump(Job *j, FILE*f, const char *prefix) { |
a66d02c3 LP |
293 | assert(j); |
294 | assert(f); | |
295 | ||
9eb63b3c LP |
296 | if (!prefix) |
297 | prefix = ""; | |
298 | ||
ceed3570 | 299 | fprintf(f, |
40d50879 LP |
300 | "%s-> Job %u:\n" |
301 | "%s\tAction: %s -> %s\n" | |
5cb5a6ff | 302 | "%s\tState: %s\n" |
23ade460 MS |
303 | "%s\tForced: %s\n" |
304 | "%s\tIrreversible: %s\n", | |
ceed3570 | 305 | prefix, j->id, |
ac155bb8 | 306 | prefix, j->unit->id, job_type_to_string(j->type), |
94f04347 | 307 | prefix, job_state_to_string(j->state), |
23ade460 MS |
308 | prefix, yes_no(j->override), |
309 | prefix, yes_no(j->irreversible)); | |
a66d02c3 | 310 | } |
e5b5ae50 | 311 | |
348e27fe MS |
312 | /* |
313 | * Merging is commutative, so imagine the matrix as symmetric. We store only | |
314 | * its lower triangle to avoid duplication. We don't store the main diagonal, | |
315 | * because A merged with A is simply A. | |
316 | * | |
e0209d83 MS |
317 | * If the resulting type is collapsed immediately afterwards (to get rid of |
318 | * the JOB_RELOAD_OR_START, which lies outside the lookup function's domain), | |
319 | * the following properties hold: | |
320 | * | |
48b4eab4 | 321 | * Merging is associative! A merged with B, and then merged with C is the same |
103635db | 322 | * as A merged with the result of B merged with C. |
348e27fe MS |
323 | * |
324 | * Mergeability is transitive! If A can be merged with B and B with C then | |
325 | * A also with C. | |
326 | * | |
327 | * Also, if A merged with B cannot be merged with C, then either A or B cannot | |
328 | * be merged with C either. | |
329 | */ | |
330 | static const JobType job_merging_table[] = { | |
e0209d83 MS |
331 | /* What \ With * JOB_START JOB_VERIFY_ACTIVE JOB_STOP JOB_RELOAD */ |
332 | /*********************************************************************************/ | |
348e27fe MS |
333 | /*JOB_START */ |
334 | /*JOB_VERIFY_ACTIVE */ JOB_START, | |
335 | /*JOB_STOP */ -1, -1, | |
336 | /*JOB_RELOAD */ JOB_RELOAD_OR_START, JOB_RELOAD, -1, | |
e0209d83 | 337 | /*JOB_RESTART */ JOB_RESTART, JOB_RESTART, -1, JOB_RESTART, |
348e27fe MS |
338 | }; |
339 | ||
340 | JobType job_type_lookup_merge(JobType a, JobType b) { | |
e0209d83 MS |
341 | assert_cc(ELEMENTSOF(job_merging_table) == _JOB_TYPE_MAX_MERGING * (_JOB_TYPE_MAX_MERGING - 1) / 2); |
342 | assert(a >= 0 && a < _JOB_TYPE_MAX_MERGING); | |
343 | assert(b >= 0 && b < _JOB_TYPE_MAX_MERGING); | |
1ffba6fe LP |
344 | |
345 | if (a == b) | |
348e27fe | 346 | return a; |
1ffba6fe | 347 | |
348e27fe MS |
348 | if (a < b) { |
349 | JobType tmp = a; | |
350 | a = b; | |
351 | b = tmp; | |
1ffba6fe | 352 | } |
e094e853 | 353 | |
348e27fe | 354 | return job_merging_table[(a - 1) * a / 2 + b]; |
e094e853 | 355 | } |
cd2dbd7d | 356 | |
593fbdd2 LP |
357 | bool job_type_is_redundant(JobType a, UnitActiveState b) { |
358 | switch (a) { | |
359 | ||
360 | case JOB_START: | |
361 | return | |
362 | b == UNIT_ACTIVE || | |
032ff4af | 363 | b == UNIT_RELOADING; |
593fbdd2 LP |
364 | |
365 | case JOB_STOP: | |
366 | return | |
6124958c | 367 | b == UNIT_INACTIVE || |
fdf20a31 | 368 | b == UNIT_FAILED; |
593fbdd2 LP |
369 | |
370 | case JOB_VERIFY_ACTIVE: | |
371 | return | |
372 | b == UNIT_ACTIVE || | |
032ff4af | 373 | b == UNIT_RELOADING; |
593fbdd2 LP |
374 | |
375 | case JOB_RELOAD: | |
376 | return | |
032ff4af | 377 | b == UNIT_RELOADING; |
593fbdd2 | 378 | |
593fbdd2 LP |
379 | case JOB_RESTART: |
380 | return | |
381 | b == UNIT_ACTIVATING; | |
382 | ||
7e803f5e MS |
383 | case JOB_NOP: |
384 | return true; | |
385 | ||
e0209d83 MS |
386 | default: |
387 | assert_not_reached("Invalid job type"); | |
388 | } | |
389 | } | |
390 | ||
c6497ccb | 391 | JobType job_type_collapse(JobType t, Unit *u) { |
e0209d83 MS |
392 | UnitActiveState s; |
393 | ||
c6497ccb | 394 | switch (t) { |
e0209d83 | 395 | |
593fbdd2 | 396 | case JOB_TRY_RESTART: |
e0209d83 MS |
397 | s = unit_active_state(u); |
398 | if (UNIT_IS_INACTIVE_OR_DEACTIVATING(s)) | |
c6497ccb LP |
399 | return JOB_NOP; |
400 | ||
401 | return JOB_RESTART; | |
e0209d83 MS |
402 | |
403 | case JOB_RELOAD_OR_START: | |
404 | s = unit_active_state(u); | |
405 | if (UNIT_IS_INACTIVE_OR_DEACTIVATING(s)) | |
c6497ccb LP |
406 | return JOB_START; |
407 | ||
408 | return JOB_RELOAD; | |
593fbdd2 LP |
409 | |
410 | default: | |
c6497ccb | 411 | return t; |
593fbdd2 LP |
412 | } |
413 | } | |
414 | ||
e0209d83 | 415 | int job_type_merge_and_collapse(JobType *a, JobType b, Unit *u) { |
c6497ccb LP |
416 | JobType t; |
417 | ||
418 | t = job_type_lookup_merge(*a, b); | |
e0209d83 MS |
419 | if (t < 0) |
420 | return -EEXIST; | |
c6497ccb LP |
421 | |
422 | *a = job_type_collapse(t, u); | |
e0209d83 MS |
423 | return 0; |
424 | } | |
425 | ||
9588bc32 | 426 | static bool job_is_runnable(Job *j) { |
034c6ed7 | 427 | Iterator i; |
87f0e418 | 428 | Unit *other; |
5cb5a6ff LP |
429 | |
430 | assert(j); | |
ac1135be | 431 | assert(j->installed); |
5cb5a6ff | 432 | |
87f0e418 | 433 | /* Checks whether there is any job running for the units this |
5cb5a6ff | 434 | * job needs to be running after (in the case of a 'positive' |
e67c3609 LP |
435 | * job type) or before (in the case of a 'negative' job |
436 | * type. */ | |
437 | ||
66ca4ec4 LP |
438 | /* Note that unit types have a say in what is runnable, |
439 | * too. For example, if they return -EAGAIN from | |
440 | * unit_start() they can indicate they are not | |
441 | * runnable yet. */ | |
442 | ||
e67c3609 | 443 | /* First check if there is an override */ |
cebe0d41 | 444 | if (j->ignore_order) |
e67c3609 | 445 | return true; |
5cb5a6ff | 446 | |
e0209d83 MS |
447 | if (j->type == JOB_NOP) |
448 | return true; | |
449 | ||
5cb5a6ff LP |
450 | if (j->type == JOB_START || |
451 | j->type == JOB_VERIFY_ACTIVE || | |
e0209d83 | 452 | j->type == JOB_RELOAD) { |
5cb5a6ff LP |
453 | |
454 | /* Immediate result is that the job is or might be | |
fc08079e | 455 | * started. In this case let's wait for the |
5cb5a6ff LP |
456 | * dependencies, regardless whether they are |
457 | * starting or stopping something. */ | |
458 | ||
ac155bb8 MS |
459 | SET_FOREACH(other, j->unit->dependencies[UNIT_AFTER], i) |
460 | if (other->job) | |
5cb5a6ff LP |
461 | return false; |
462 | } | |
463 | ||
464 | /* Also, if something else is being stopped and we should | |
fc08079e | 465 | * change state after it, then let's wait. */ |
5cb5a6ff | 466 | |
ac155bb8 MS |
467 | SET_FOREACH(other, j->unit->dependencies[UNIT_BEFORE], i) |
468 | if (other->job && | |
469 | (other->job->type == JOB_STOP || | |
e0209d83 | 470 | other->job->type == JOB_RESTART)) |
5cb5a6ff LP |
471 | return false; |
472 | ||
473 | /* This means that for a service a and a service b where b | |
474 | * shall be started after a: | |
475 | * | |
476 | * start a + start b → 1st step start a, 2nd step start b | |
477 | * start a + stop b → 1st step stop b, 2nd step start a | |
478 | * stop a + start b → 1st step stop a, 2nd step start b | |
479 | * stop a + stop b → 1st step stop b, 2nd step stop a | |
480 | * | |
481 | * This has the side effect that restarts are properly | |
482 | * synchronized too. */ | |
483 | ||
484 | return true; | |
485 | } | |
486 | ||
bbd1a837 | 487 | static void job_change_type(Job *j, JobType newtype) { |
f2341e0a LP |
488 | assert(j); |
489 | ||
490 | log_unit_debug(j->unit, | |
66870f90 ZJS |
491 | "Converting job %s/%s -> %s/%s", |
492 | j->unit->id, job_type_to_string(j->type), | |
493 | j->unit->id, job_type_to_string(newtype)); | |
bbd1a837 MS |
494 | |
495 | j->type = newtype; | |
496 | } | |
497 | ||
d1a34ae9 MS |
498 | static int job_perform_on_unit(Job **j) { |
499 | /* While we execute this operation the job might go away (for | |
500 | * example: because it finishes immediately or is replaced by a new, | |
501 | * conflicting job.) To make sure we don't access a freed job later on | |
502 | * we store the id here, so that we can verify the job is still | |
503 | * valid. */ | |
504 | Manager *m = (*j)->manager; | |
505 | Unit *u = (*j)->unit; | |
506 | JobType t = (*j)->type; | |
507 | uint32_t id = (*j)->id; | |
508 | int r; | |
509 | ||
510 | switch (t) { | |
511 | case JOB_START: | |
512 | r = unit_start(u); | |
513 | break; | |
514 | ||
515 | case JOB_RESTART: | |
516 | t = JOB_STOP; | |
517 | case JOB_STOP: | |
518 | r = unit_stop(u); | |
519 | break; | |
520 | ||
521 | case JOB_RELOAD: | |
522 | r = unit_reload(u); | |
523 | break; | |
524 | ||
525 | default: | |
526 | assert_not_reached("Invalid job type"); | |
527 | } | |
528 | ||
529 | /* Log if the job still exists and the start/stop/reload function | |
530 | * actually did something. */ | |
531 | *j = manager_get_job(m, id); | |
532 | if (*j && r > 0) | |
533 | unit_status_emit_starting_stopping_reloading(u, t); | |
534 | ||
535 | return r; | |
536 | } | |
537 | ||
5cb5a6ff LP |
538 | int job_run_and_invalidate(Job *j) { |
539 | int r; | |
ac1135be | 540 | |
5cb5a6ff | 541 | assert(j); |
ac1135be | 542 | assert(j->installed); |
e0209d83 | 543 | assert(j->type < _JOB_TYPE_MAX_IN_TRANSACTION); |
66aa6f7f | 544 | assert(j->in_run_queue); |
5cb5a6ff | 545 | |
71fda00f | 546 | LIST_REMOVE(run_queue, j->manager->run_queue, j); |
66aa6f7f | 547 | j->in_run_queue = false; |
5cb5a6ff LP |
548 | |
549 | if (j->state != JOB_WAITING) | |
550 | return 0; | |
551 | ||
034c6ed7 LP |
552 | if (!job_is_runnable(j)) |
553 | return -EAGAIN; | |
554 | ||
9c3349e2 | 555 | job_set_state(j, JOB_RUNNING); |
c1e1601e | 556 | job_add_to_dbus_queue(j); |
83c60c9f | 557 | |
2cf19a7a | 558 | |
5cb5a6ff LP |
559 | switch (j->type) { |
560 | ||
5cb5a6ff | 561 | case JOB_VERIFY_ACTIVE: { |
87f0e418 LP |
562 | UnitActiveState t = unit_active_state(j->unit); |
563 | if (UNIT_IS_ACTIVE_OR_RELOADING(t)) | |
5cb5a6ff | 564 | r = -EALREADY; |
87f0e418 | 565 | else if (t == UNIT_ACTIVATING) |
5cb5a6ff LP |
566 | r = -EAGAIN; |
567 | else | |
6a371e23 | 568 | r = -EBADR; |
5cb5a6ff LP |
569 | break; |
570 | } | |
571 | ||
d1a34ae9 | 572 | case JOB_START: |
5cb5a6ff | 573 | case JOB_STOP: |
dd17d388 | 574 | case JOB_RESTART: |
d1a34ae9 | 575 | r = job_perform_on_unit(&j); |
57339f47 | 576 | |
d1a34ae9 MS |
577 | /* If the unit type does not support starting/stopping, |
578 | * then simply wait. */ | |
57339f47 LP |
579 | if (r == -EBADR) |
580 | r = 0; | |
5cb5a6ff LP |
581 | break; |
582 | ||
583 | case JOB_RELOAD: | |
d1a34ae9 | 584 | r = job_perform_on_unit(&j); |
5cb5a6ff LP |
585 | break; |
586 | ||
e0209d83 MS |
587 | case JOB_NOP: |
588 | r = -EALREADY; | |
589 | break; | |
590 | ||
5cb5a6ff | 591 | default: |
44d8db9e | 592 | assert_not_reached("Unknown job type"); |
5cb5a6ff LP |
593 | } |
594 | ||
e0209d83 | 595 | if (j) { |
2cf19a7a | 596 | if (r == -EALREADY) |
5273510e | 597 | r = job_finish_and_invalidate(j, JOB_DONE, true); |
6a371e23 | 598 | else if (r == -EBADR) |
5273510e | 599 | r = job_finish_and_invalidate(j, JOB_SKIPPED, true); |
6a371e23 ZJS |
600 | else if (r == -ENOEXEC) |
601 | r = job_finish_and_invalidate(j, JOB_INVALID, true); | |
59fccdc5 LP |
602 | else if (r == -EPROTO) |
603 | r = job_finish_and_invalidate(j, JOB_ASSERT, true); | |
15411c0c | 604 | else if (r == -EOPNOTSUPP) |
0faacd47 | 605 | r = job_finish_and_invalidate(j, JOB_UNSUPPORTED, true); |
9c3349e2 LP |
606 | else if (r == -EAGAIN) |
607 | job_set_state(j, JOB_WAITING); | |
608 | else if (r < 0) | |
5273510e | 609 | r = job_finish_and_invalidate(j, JOB_FAILED, true); |
2cf19a7a | 610 | } |
5cb5a6ff LP |
611 | |
612 | return r; | |
613 | } | |
614 | ||
44a6b1b6 | 615 | _pure_ static const char *job_get_status_message_format(Unit *u, JobType t, JobResult result) { |
aa49ab5f | 616 | const char *format; |
c6918296 | 617 | const UnitStatusMessageFormats *format_table; |
aa49ab5f MS |
618 | static const char *const generic_finished_start_job[_JOB_RESULT_MAX] = { |
619 | [JOB_DONE] = "Started %s.", | |
620 | [JOB_TIMEOUT] = "Timed out starting %s.", | |
621 | [JOB_FAILED] = "Failed to start %s.", | |
622 | [JOB_DEPENDENCY] = "Dependency failed for %s.", | |
623 | [JOB_ASSERT] = "Assertion failed for %s.", | |
624 | [JOB_UNSUPPORTED] = "Starting of %s not supported.", | |
625 | }; | |
626 | static const char *const generic_finished_stop_job[_JOB_RESULT_MAX] = { | |
627 | [JOB_DONE] = "Stopped %s.", | |
628 | [JOB_FAILED] = "Stopped (with error) %s.", | |
629 | [JOB_TIMEOUT] = "Timed out stoppping %s.", | |
630 | }; | |
631 | static const char *const generic_finished_reload_job[_JOB_RESULT_MAX] = { | |
632 | [JOB_DONE] = "Reloaded %s.", | |
633 | [JOB_FAILED] = "Reload failed for %s.", | |
634 | [JOB_TIMEOUT] = "Timed out reloading %s.", | |
635 | }; | |
636 | /* When verify-active detects the unit is inactive, report it. | |
637 | * Most likely a DEPEND warning from a requisiting unit will | |
638 | * occur next and it's nice to see what was requisited. */ | |
639 | static const char *const generic_finished_verify_active_job[_JOB_RESULT_MAX] = { | |
640 | [JOB_SKIPPED] = "%s is not active.", | |
641 | }; | |
877d54e9 LP |
642 | |
643 | assert(u); | |
644 | assert(t >= 0); | |
645 | assert(t < _JOB_TYPE_MAX); | |
c6918296 | 646 | |
aa49ab5f MS |
647 | if (t == JOB_START || t == JOB_STOP || t == JOB_RESTART) { |
648 | format_table = &UNIT_VTABLE(u)->status_message_formats; | |
649 | if (format_table) { | |
650 | format = t == JOB_START ? format_table->finished_start_job[result] : | |
651 | format_table->finished_stop_job[result]; | |
652 | if (format) | |
653 | return format; | |
654 | } | |
655 | } | |
877d54e9 | 656 | |
aa49ab5f | 657 | /* Return generic strings */ |
877d54e9 | 658 | if (t == JOB_START) |
aa49ab5f | 659 | return generic_finished_start_job[result]; |
877d54e9 | 660 | else if (t == JOB_STOP || t == JOB_RESTART) |
aa49ab5f MS |
661 | return generic_finished_stop_job[result]; |
662 | else if (t == JOB_RELOAD) | |
663 | return generic_finished_reload_job[result]; | |
664 | else if (t == JOB_VERIFY_ACTIVE) | |
665 | return generic_finished_verify_active_job[result]; | |
877d54e9 LP |
666 | |
667 | return NULL; | |
668 | } | |
669 | ||
670 | static void job_print_status_message(Unit *u, JobType t, JobResult result) { | |
671 | const char *format; | |
aa49ab5f MS |
672 | static const char* const job_result_status_table[_JOB_RESULT_MAX] = { |
673 | [JOB_DONE] = ANSI_GREEN_ON " OK " ANSI_HIGHLIGHT_OFF, | |
674 | [JOB_TIMEOUT] = ANSI_HIGHLIGHT_RED_ON " TIME " ANSI_HIGHLIGHT_OFF, | |
675 | [JOB_FAILED] = ANSI_HIGHLIGHT_RED_ON "FAILED" ANSI_HIGHLIGHT_OFF, | |
676 | [JOB_DEPENDENCY] = ANSI_HIGHLIGHT_YELLOW_ON "DEPEND" ANSI_HIGHLIGHT_OFF, | |
677 | [JOB_SKIPPED] = ANSI_HIGHLIGHT_ON " INFO " ANSI_HIGHLIGHT_OFF, | |
678 | [JOB_ASSERT] = ANSI_HIGHLIGHT_YELLOW_ON "ASSERT" ANSI_HIGHLIGHT_OFF, | |
679 | [JOB_UNSUPPORTED] = ANSI_HIGHLIGHT_YELLOW_ON "UNSUPP" ANSI_HIGHLIGHT_OFF, | |
680 | }; | |
e02cd6f7 | 681 | |
877d54e9 LP |
682 | assert(u); |
683 | assert(t >= 0); | |
684 | assert(t < _JOB_TYPE_MAX); | |
685 | ||
aa49ab5f MS |
686 | format = job_get_status_message_format(u, t, result); |
687 | if (!format) | |
688 | return; | |
e02cd6f7 | 689 | |
aa49ab5f MS |
690 | if (result != JOB_DONE) |
691 | manager_flip_auto_status(u->manager, true); | |
e02cd6f7 | 692 | |
aa49ab5f MS |
693 | DISABLE_WARNING_FORMAT_NONLITERAL; |
694 | unit_status_printf(u, job_result_status_table[result], format); | |
695 | REENABLE_WARNING; | |
7cf82e0b | 696 | |
aa49ab5f MS |
697 | if (t == JOB_START && result == JOB_FAILED) { |
698 | _cleanup_free_ char *quoted = shell_maybe_quote(u->id); | |
7cf82e0b | 699 | |
aa49ab5f MS |
700 | manager_status_printf(u->manager, STATUS_TYPE_NORMAL, NULL, |
701 | "See 'systemctl status %s' for details.", strna(quoted)); | |
e02cd6f7 LP |
702 | } |
703 | } | |
704 | ||
877d54e9 LP |
705 | static void job_log_status_message(Unit *u, JobType t, JobResult result) { |
706 | const char *format; | |
707 | char buf[LINE_MAX]; | |
b81bbe53 | 708 | sd_id128_t mid; |
64f575d2 MS |
709 | static const int job_result_log_level[_JOB_RESULT_MAX] = { |
710 | [JOB_DONE] = LOG_INFO, | |
711 | [JOB_CANCELED] = LOG_INFO, | |
712 | [JOB_TIMEOUT] = LOG_ERR, | |
713 | [JOB_FAILED] = LOG_ERR, | |
714 | [JOB_DEPENDENCY] = LOG_WARNING, | |
715 | [JOB_SKIPPED] = LOG_NOTICE, | |
716 | [JOB_INVALID] = LOG_INFO, | |
717 | [JOB_ASSERT] = LOG_WARNING, | |
718 | [JOB_UNSUPPORTED] = LOG_WARNING, | |
719 | }; | |
877d54e9 LP |
720 | |
721 | assert(u); | |
722 | assert(t >= 0); | |
723 | assert(t < _JOB_TYPE_MAX); | |
724 | ||
81270860 LP |
725 | /* Skip this if it goes to the console. since we already print |
726 | * to the console anyway... */ | |
727 | ||
728 | if (log_on_console()) | |
729 | return; | |
730 | ||
aa49ab5f | 731 | format = job_get_status_message_format(u, t, result); |
877d54e9 LP |
732 | if (!format) |
733 | return; | |
734 | ||
bcfce235 | 735 | DISABLE_WARNING_FORMAT_NONLITERAL; |
877d54e9 | 736 | snprintf(buf, sizeof(buf), format, unit_description(u)); |
bcfce235 | 737 | REENABLE_WARNING; |
877d54e9 | 738 | |
b81bbe53 | 739 | if (t == JOB_START) |
877d54e9 | 740 | mid = result == JOB_DONE ? SD_MESSAGE_UNIT_STARTED : SD_MESSAGE_UNIT_FAILED; |
b81bbe53 MS |
741 | else if (t == JOB_STOP || t == JOB_RESTART) |
742 | mid = SD_MESSAGE_UNIT_STOPPED; | |
877d54e9 | 743 | else if (t == JOB_RELOAD) |
b81bbe53 MS |
744 | mid = SD_MESSAGE_UNIT_RELOADED; |
745 | else { | |
64f575d2 | 746 | log_struct(job_result_log_level[result], |
4f29c6fe MS |
747 | LOG_UNIT_ID(u), |
748 | LOG_MESSAGE("%s", buf), | |
749 | "RESULT=%s", job_result_to_string(result), | |
750 | NULL); | |
b81bbe53 MS |
751 | return; |
752 | } | |
753 | ||
64f575d2 | 754 | log_struct(job_result_log_level[result], |
b81bbe53 MS |
755 | LOG_MESSAGE_ID(mid), |
756 | LOG_UNIT_ID(u), | |
757 | LOG_MESSAGE("%s", buf), | |
758 | "RESULT=%s", job_result_to_string(result), | |
759 | NULL); | |
877d54e9 | 760 | } |
877d54e9 | 761 | |
30961fa3 MS |
762 | static void job_emit_status_message(Unit *u, JobType t, JobResult result) { |
763 | ||
764 | /* No message if the job did not actually do anything due to failed condition. */ | |
765 | if (t == JOB_START && result == JOB_DONE && !u->condition_result) | |
766 | return; | |
767 | ||
768 | job_log_status_message(u, t, result); | |
769 | ||
770 | /* Reload status messages have traditionally not been printed to console. */ | |
771 | if (t != JOB_RELOAD) | |
772 | job_print_status_message(u, t, result); | |
773 | } | |
774 | ||
be7d9ff7 LP |
775 | static void job_fail_dependencies(Unit *u, UnitDependency d) { |
776 | Unit *other; | |
777 | Iterator i; | |
778 | ||
779 | assert(u); | |
780 | ||
781 | SET_FOREACH(other, u->dependencies[d], i) { | |
782 | Job *j = other->job; | |
783 | ||
784 | if (!j) | |
785 | continue; | |
786 | if (!IN_SET(j->type, JOB_START, JOB_VERIFY_ACTIVE)) | |
787 | continue; | |
788 | ||
789 | job_finish_and_invalidate(j, JOB_DEPENDENCY, true); | |
790 | } | |
791 | } | |
792 | ||
5273510e | 793 | int job_finish_and_invalidate(Job *j, JobResult result, bool recursive) { |
87f0e418 LP |
794 | Unit *u; |
795 | Unit *other; | |
b866264a | 796 | JobType t; |
034c6ed7 | 797 | Iterator i; |
5cb5a6ff LP |
798 | |
799 | assert(j); | |
ac1135be | 800 | assert(j->installed); |
e0209d83 | 801 | assert(j->type < _JOB_TYPE_MAX_IN_TRANSACTION); |
5cb5a6ff | 802 | |
c6918296 MS |
803 | u = j->unit; |
804 | t = j->type; | |
805 | ||
806 | j->result = result; | |
807 | ||
f2341e0a | 808 | log_unit_debug(u, "Job %s/%s finished, result=%s", u->id, job_type_to_string(t), job_result_to_string(result)); |
c6918296 | 809 | |
30961fa3 | 810 | job_emit_status_message(u, t, result); |
c6918296 | 811 | |
c1e1601e | 812 | job_add_to_dbus_queue(j); |
f50e0a01 | 813 | |
034c6ed7 | 814 | /* Patch restart jobs so that they become normal start jobs */ |
c6918296 | 815 | if (result == JOB_DONE && t == JOB_RESTART) { |
f50e0a01 | 816 | |
bbd1a837 | 817 | job_change_type(j, JOB_START); |
9c3349e2 | 818 | job_set_state(j, JOB_WAITING); |
cc42e081 LP |
819 | |
820 | job_add_to_run_queue(j); | |
57981b98 | 821 | |
57981b98 | 822 | goto finish; |
5cb5a6ff LP |
823 | } |
824 | ||
6a371e23 | 825 | if (result == JOB_FAILED || result == JOB_INVALID) |
76bf48b7 LP |
826 | j->manager->n_failed_jobs ++; |
827 | ||
97e7d748 | 828 | job_uninstall(j); |
5cb5a6ff LP |
829 | job_free(j); |
830 | ||
831 | /* Fail depending jobs on failure */ | |
5273510e | 832 | if (result != JOB_DONE && recursive) { |
be7d9ff7 LP |
833 | if (IN_SET(t, JOB_START, JOB_VERIFY_ACTIVE)) { |
834 | job_fail_dependencies(u, UNIT_REQUIRED_BY); | |
835 | job_fail_dependencies(u, UNIT_REQUISITE_OF); | |
836 | job_fail_dependencies(u, UNIT_BOUND_BY); | |
837 | job_fail_dependencies(u, UNIT_REQUIRED_BY_OVERRIDABLE); | |
838 | job_fail_dependencies(u, UNIT_REQUISITE_OF_OVERRIDABLE); | |
839 | } else if (t == JOB_STOP) | |
840 | job_fail_dependencies(u, UNIT_CONFLICTED_BY); | |
5cb5a6ff LP |
841 | } |
842 | ||
c0daa706 | 843 | /* Trigger OnFailure dependencies that are not generated by |
66870f90 | 844 | * the unit itself. We don't treat JOB_CANCELED as failure in |
c0daa706 LP |
845 | * this context. And JOB_FAILURE is already handled by the |
846 | * unit itself. */ | |
222ae6a8 | 847 | if (result == JOB_TIMEOUT || result == JOB_DEPENDENCY) { |
f2341e0a LP |
848 | log_struct(LOG_NOTICE, |
849 | "JOB_TYPE=%s", job_type_to_string(t), | |
850 | "JOB_RESULT=%s", job_result_to_string(result), | |
851 | LOG_UNIT_ID(u), | |
852 | LOG_UNIT_MESSAGE(u, "Job %s/%s failed with result '%s'.", | |
e2cc6eca LP |
853 | u->id, |
854 | job_type_to_string(t), | |
855 | job_result_to_string(result)), | |
f2341e0a | 856 | NULL); |
222ae6a8 | 857 | |
3ecaa09b | 858 | unit_start_on_failure(u); |
222ae6a8 | 859 | } |
c0daa706 | 860 | |
3ecaa09b LP |
861 | unit_trigger_notify(u); |
862 | ||
57981b98 | 863 | finish: |
5cb5a6ff | 864 | /* Try to start the next jobs that can be started */ |
ac155bb8 MS |
865 | SET_FOREACH(other, u->dependencies[UNIT_AFTER], i) |
866 | if (other->job) | |
867 | job_add_to_run_queue(other->job); | |
868 | SET_FOREACH(other, u->dependencies[UNIT_BEFORE], i) | |
869 | if (other->job) | |
870 | job_add_to_run_queue(other->job); | |
5cb5a6ff | 871 | |
ac155bb8 | 872 | manager_check_finished(u->manager); |
b0c918b9 | 873 | |
5273510e | 874 | return 0; |
5cb5a6ff | 875 | } |
034c6ed7 | 876 | |
718db961 LP |
877 | static int job_dispatch_timer(sd_event_source *s, uint64_t monotonic, void *userdata) { |
878 | Job *j = userdata; | |
f189ab18 | 879 | Unit *u; |
faf919f1 | 880 | |
718db961 LP |
881 | assert(j); |
882 | assert(s == j->timer_event_source); | |
faf919f1 | 883 | |
f2341e0a | 884 | log_unit_warning(j->unit, "Job %s/%s timed out.", j->unit->id, job_type_to_string(j->type)); |
faf919f1 | 885 | |
f189ab18 | 886 | u = j->unit; |
718db961 | 887 | job_finish_and_invalidate(j, JOB_TIMEOUT, true); |
f189ab18 LP |
888 | |
889 | failure_action(u->manager, u->job_timeout_action, u->job_timeout_reboot_arg); | |
890 | ||
718db961 LP |
891 | return 0; |
892 | } | |
faf919f1 | 893 | |
718db961 LP |
894 | int job_start_timer(Job *j) { |
895 | int r; | |
faf919f1 | 896 | |
8bb310c3 | 897 | if (j->timer_event_source) |
718db961 | 898 | return 0; |
faf919f1 | 899 | |
718db961 | 900 | j->begin_usec = now(CLOCK_MONOTONIC); |
faf919f1 | 901 | |
8bb310c3 ZJS |
902 | if (j->unit->job_timeout <= 0) |
903 | return 0; | |
904 | ||
6a0f1f6d LP |
905 | r = sd_event_add_time( |
906 | j->manager->event, | |
907 | &j->timer_event_source, | |
908 | CLOCK_MONOTONIC, | |
909 | j->begin_usec + j->unit->job_timeout, 0, | |
910 | job_dispatch_timer, j); | |
718db961 LP |
911 | if (r < 0) |
912 | return r; | |
faf919f1 | 913 | |
7dfbe2e3 TG |
914 | (void) sd_event_source_set_description(j->timer_event_source, "job-start"); |
915 | ||
718db961 | 916 | return 0; |
faf919f1 LP |
917 | } |
918 | ||
c1e1601e | 919 | void job_add_to_run_queue(Job *j) { |
034c6ed7 | 920 | assert(j); |
ac1135be | 921 | assert(j->installed); |
034c6ed7 LP |
922 | |
923 | if (j->in_run_queue) | |
924 | return; | |
925 | ||
752b5905 LP |
926 | if (!j->manager->run_queue) |
927 | sd_event_source_set_enabled(j->manager->run_queue_event_source, SD_EVENT_ONESHOT); | |
928 | ||
71fda00f | 929 | LIST_PREPEND(run_queue, j->manager->run_queue, j); |
034c6ed7 LP |
930 | j->in_run_queue = true; |
931 | } | |
94f04347 | 932 | |
c1e1601e LP |
933 | void job_add_to_dbus_queue(Job *j) { |
934 | assert(j); | |
935 | assert(j->installed); | |
936 | ||
937 | if (j->in_dbus_queue) | |
938 | return; | |
939 | ||
a567261a LP |
940 | /* We don't check if anybody is subscribed here, since this |
941 | * job might just have been created and not yet assigned to a | |
942 | * connection/client. */ | |
94b6dfa2 | 943 | |
71fda00f | 944 | LIST_PREPEND(dbus_queue, j->manager->dbus_job_queue, j); |
c1e1601e LP |
945 | j->in_dbus_queue = true; |
946 | } | |
947 | ||
ea430986 LP |
948 | char *job_dbus_path(Job *j) { |
949 | char *p; | |
950 | ||
951 | assert(j); | |
952 | ||
ccd06097 | 953 | if (asprintf(&p, "/org/freedesktop/systemd1/job/%"PRIu32, j->id) < 0) |
ea430986 LP |
954 | return NULL; |
955 | ||
956 | return p; | |
957 | } | |
958 | ||
39a18c60 MS |
959 | int job_serialize(Job *j, FILE *f, FDSet *fds) { |
960 | fprintf(f, "job-id=%u\n", j->id); | |
961 | fprintf(f, "job-type=%s\n", job_type_to_string(j->type)); | |
962 | fprintf(f, "job-state=%s\n", job_state_to_string(j->state)); | |
963 | fprintf(f, "job-override=%s\n", yes_no(j->override)); | |
23ade460 | 964 | fprintf(f, "job-irreversible=%s\n", yes_no(j->irreversible)); |
39a18c60 MS |
965 | fprintf(f, "job-sent-dbus-new-signal=%s\n", yes_no(j->sent_dbus_new_signal)); |
966 | fprintf(f, "job-ignore-order=%s\n", yes_no(j->ignore_order)); | |
718db961 LP |
967 | |
968 | if (j->begin_usec > 0) | |
ccd06097 | 969 | fprintf(f, "job-begin="USEC_FMT"\n", j->begin_usec); |
718db961 | 970 | |
b39a2770 | 971 | bus_track_serialize(j->clients, f); |
39a18c60 MS |
972 | |
973 | /* End marker */ | |
974 | fputc('\n', f); | |
975 | return 0; | |
976 | } | |
977 | ||
978 | int job_deserialize(Job *j, FILE *f, FDSet *fds) { | |
718db961 LP |
979 | assert(j); |
980 | ||
39a18c60 MS |
981 | for (;;) { |
982 | char line[LINE_MAX], *l, *v; | |
983 | size_t k; | |
984 | ||
985 | if (!fgets(line, sizeof(line), f)) { | |
986 | if (feof(f)) | |
987 | return 0; | |
988 | return -errno; | |
989 | } | |
990 | ||
991 | char_array_0(line); | |
992 | l = strstrip(line); | |
993 | ||
994 | /* End marker */ | |
995 | if (l[0] == 0) | |
996 | return 0; | |
997 | ||
998 | k = strcspn(l, "="); | |
999 | ||
1000 | if (l[k] == '=') { | |
1001 | l[k] = 0; | |
1002 | v = l+k+1; | |
1003 | } else | |
1004 | v = l+k; | |
1005 | ||
1006 | if (streq(l, "job-id")) { | |
718db961 | 1007 | |
39a18c60 MS |
1008 | if (safe_atou32(v, &j->id) < 0) |
1009 | log_debug("Failed to parse job id value %s", v); | |
718db961 | 1010 | |
39a18c60 | 1011 | } else if (streq(l, "job-type")) { |
718db961 LP |
1012 | JobType t; |
1013 | ||
1014 | t = job_type_from_string(v); | |
39a18c60 MS |
1015 | if (t < 0) |
1016 | log_debug("Failed to parse job type %s", v); | |
e0209d83 MS |
1017 | else if (t >= _JOB_TYPE_MAX_IN_TRANSACTION) |
1018 | log_debug("Cannot deserialize job of type %s", v); | |
39a18c60 MS |
1019 | else |
1020 | j->type = t; | |
718db961 | 1021 | |
39a18c60 | 1022 | } else if (streq(l, "job-state")) { |
718db961 LP |
1023 | JobState s; |
1024 | ||
1025 | s = job_state_from_string(v); | |
39a18c60 MS |
1026 | if (s < 0) |
1027 | log_debug("Failed to parse job state %s", v); | |
1028 | else | |
9c3349e2 | 1029 | job_set_state(j, s); |
718db961 | 1030 | |
39a18c60 | 1031 | } else if (streq(l, "job-override")) { |
718db961 LP |
1032 | int b; |
1033 | ||
1034 | b = parse_boolean(v); | |
39a18c60 MS |
1035 | if (b < 0) |
1036 | log_debug("Failed to parse job override flag %s", v); | |
1037 | else | |
1038 | j->override = j->override || b; | |
718db961 | 1039 | |
23ade460 | 1040 | } else if (streq(l, "job-irreversible")) { |
718db961 LP |
1041 | int b; |
1042 | ||
1043 | b = parse_boolean(v); | |
23ade460 MS |
1044 | if (b < 0) |
1045 | log_debug("Failed to parse job irreversible flag %s", v); | |
1046 | else | |
1047 | j->irreversible = j->irreversible || b; | |
718db961 | 1048 | |
39a18c60 | 1049 | } else if (streq(l, "job-sent-dbus-new-signal")) { |
718db961 LP |
1050 | int b; |
1051 | ||
1052 | b = parse_boolean(v); | |
39a18c60 MS |
1053 | if (b < 0) |
1054 | log_debug("Failed to parse job sent_dbus_new_signal flag %s", v); | |
1055 | else | |
1056 | j->sent_dbus_new_signal = j->sent_dbus_new_signal || b; | |
718db961 | 1057 | |
39a18c60 | 1058 | } else if (streq(l, "job-ignore-order")) { |
718db961 LP |
1059 | int b; |
1060 | ||
1061 | b = parse_boolean(v); | |
39a18c60 MS |
1062 | if (b < 0) |
1063 | log_debug("Failed to parse job ignore_order flag %s", v); | |
1064 | else | |
1065 | j->ignore_order = j->ignore_order || b; | |
718db961 LP |
1066 | |
1067 | } else if (streq(l, "job-begin")) { | |
1068 | unsigned long long ull; | |
1069 | ||
1070 | if (sscanf(v, "%llu", &ull) != 1) | |
1071 | log_debug("Failed to parse job-begin value %s", v); | |
39a18c60 | 1072 | else |
718db961 LP |
1073 | j->begin_usec = ull; |
1074 | ||
8f8f05a9 | 1075 | } else if (streq(l, "subscribed")) { |
718db961 | 1076 | |
b39a2770 | 1077 | if (strv_extend(&j->deserialized_clients, v) < 0) |
8f8f05a9 | 1078 | return log_oom(); |
39a18c60 MS |
1079 | } |
1080 | } | |
1081 | } | |
1082 | ||
1083 | int job_coldplug(Job *j) { | |
718db961 LP |
1084 | int r; |
1085 | ||
1086 | assert(j); | |
39a18c60 | 1087 | |
8f8f05a9 LP |
1088 | /* After deserialization is complete and the bus connection |
1089 | * set up again, let's start watching our subscribers again */ | |
b39a2770 | 1090 | r = bus_track_coldplug(j->manager, &j->clients, &j->deserialized_clients); |
8f8f05a9 LP |
1091 | if (r < 0) |
1092 | return r; | |
1093 | ||
1727a595 MM |
1094 | if (j->state == JOB_WAITING) |
1095 | job_add_to_run_queue(j); | |
1096 | ||
8bb310c3 | 1097 | if (j->begin_usec == 0 || j->unit->job_timeout == 0) |
39a18c60 MS |
1098 | return 0; |
1099 | ||
718db961 LP |
1100 | if (j->timer_event_source) |
1101 | j->timer_event_source = sd_event_source_unref(j->timer_event_source); | |
39a18c60 | 1102 | |
6a0f1f6d LP |
1103 | r = sd_event_add_time( |
1104 | j->manager->event, | |
1105 | &j->timer_event_source, | |
1106 | CLOCK_MONOTONIC, | |
1107 | j->begin_usec + j->unit->job_timeout, 0, | |
1108 | job_dispatch_timer, j); | |
718db961 | 1109 | if (r < 0) |
da927ba9 | 1110 | log_debug_errno(r, "Failed to restart timeout for job: %m"); |
718db961 | 1111 | |
7dfbe2e3 TG |
1112 | (void) sd_event_source_set_description(j->timer_event_source, "job-timeout"); |
1113 | ||
718db961 | 1114 | return r; |
39a18c60 MS |
1115 | } |
1116 | ||
c65eb836 LP |
1117 | void job_shutdown_magic(Job *j) { |
1118 | assert(j); | |
1119 | ||
1120 | /* The shutdown target gets some special treatment here: we | |
1121 | * tell the kernel to begin with flushing its disk caches, to | |
1122 | * optimize shutdown time a bit. Ideally we wouldn't hardcode | |
1123 | * this magic into PID 1. However all other processes aren't | |
1124 | * options either since they'd exit much sooner than PID 1 and | |
1125 | * asynchronous sync() would cause their exit to be | |
1126 | * delayed. */ | |
1127 | ||
c2756a68 | 1128 | if (j->type != JOB_START) |
c65eb836 LP |
1129 | return; |
1130 | ||
b2c23da8 | 1131 | if (j->unit->manager->running_as != MANAGER_SYSTEM) |
c2756a68 LP |
1132 | return; |
1133 | ||
1134 | if (!unit_has_name(j->unit, SPECIAL_SHUTDOWN_TARGET)) | |
c65eb836 LP |
1135 | return; |
1136 | ||
5b1869ea OB |
1137 | /* In case messages on console has been disabled on boot */ |
1138 | j->unit->manager->no_console_output = false; | |
1139 | ||
75f86906 | 1140 | if (detect_container() > 0) |
c65eb836 LP |
1141 | return; |
1142 | ||
1143 | asynchronous_sync(); | |
1144 | } | |
1145 | ||
68db7a3b ZJS |
1146 | int job_get_timeout(Job *j, uint64_t *timeout) { |
1147 | Unit *u = j->unit; | |
1148 | uint64_t x = -1, y = -1; | |
1149 | int r = 0, q = 0; | |
1150 | ||
1151 | assert(u); | |
1152 | ||
1153 | if (j->timer_event_source) { | |
1154 | r = sd_event_source_get_time(j->timer_event_source, &x); | |
1155 | if (r < 0) | |
1156 | return r; | |
1157 | r = 1; | |
1158 | } | |
1159 | ||
1160 | if (UNIT_VTABLE(u)->get_timeout) { | |
1161 | q = UNIT_VTABLE(u)->get_timeout(u, &y); | |
1162 | if (q < 0) | |
1163 | return q; | |
1164 | } | |
1165 | ||
1166 | if (r == 0 && q == 0) | |
1167 | return 0; | |
1168 | ||
1169 | *timeout = MIN(x, y); | |
1170 | ||
68db7a3b ZJS |
1171 | return 1; |
1172 | } | |
1173 | ||
94f04347 LP |
1174 | static const char* const job_state_table[_JOB_STATE_MAX] = { |
1175 | [JOB_WAITING] = "waiting", | |
1176 | [JOB_RUNNING] = "running" | |
1177 | }; | |
1178 | ||
1179 | DEFINE_STRING_TABLE_LOOKUP(job_state, JobState); | |
1180 | ||
1181 | static const char* const job_type_table[_JOB_TYPE_MAX] = { | |
1182 | [JOB_START] = "start", | |
1183 | [JOB_VERIFY_ACTIVE] = "verify-active", | |
1184 | [JOB_STOP] = "stop", | |
1185 | [JOB_RELOAD] = "reload", | |
1186 | [JOB_RELOAD_OR_START] = "reload-or-start", | |
1187 | [JOB_RESTART] = "restart", | |
1188 | [JOB_TRY_RESTART] = "try-restart", | |
e0209d83 | 1189 | [JOB_NOP] = "nop", |
94f04347 LP |
1190 | }; |
1191 | ||
1192 | DEFINE_STRING_TABLE_LOOKUP(job_type, JobType); | |
b548631a LP |
1193 | |
1194 | static const char* const job_mode_table[_JOB_MODE_MAX] = { | |
1195 | [JOB_FAIL] = "fail", | |
c497c7a9 | 1196 | [JOB_REPLACE] = "replace", |
23ade460 | 1197 | [JOB_REPLACE_IRREVERSIBLY] = "replace-irreversibly", |
e67c3609 | 1198 | [JOB_ISOLATE] = "isolate", |
2c5859af | 1199 | [JOB_FLUSH] = "flush", |
cebe0d41 | 1200 | [JOB_IGNORE_DEPENDENCIES] = "ignore-dependencies", |
255baef6 | 1201 | [JOB_IGNORE_REQUIREMENTS] = "ignore-requirements", |
b548631a LP |
1202 | }; |
1203 | ||
1204 | DEFINE_STRING_TABLE_LOOKUP(job_mode, JobMode); | |
5d44db4a LP |
1205 | |
1206 | static const char* const job_result_table[_JOB_RESULT_MAX] = { | |
1207 | [JOB_DONE] = "done", | |
1208 | [JOB_CANCELED] = "canceled", | |
1209 | [JOB_TIMEOUT] = "timeout", | |
1210 | [JOB_FAILED] = "failed", | |
d68201e9 | 1211 | [JOB_DEPENDENCY] = "dependency", |
6a371e23 ZJS |
1212 | [JOB_SKIPPED] = "skipped", |
1213 | [JOB_INVALID] = "invalid", | |
59fccdc5 | 1214 | [JOB_ASSERT] = "assert", |
0faacd47 | 1215 | [JOB_UNSUPPORTED] = "unsupported", |
5d44db4a LP |
1216 | }; |
1217 | ||
1218 | DEFINE_STRING_TABLE_LOOKUP(job_result, JobResult); |