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a7334b09 LP |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2010 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
7 | under the terms of the GNU Lesser General Public License as published by |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
9 | (at your option) any later version. |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 14 | Lesser General Public License for more details. |
a7334b09 | 15 | |
5430f7f2 | 16 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
18 | ***/ | |
19 | ||
1ffba6fe | 20 | #include <errno.h> |
60918275 | 21 | |
718db961 LP |
22 | #include "sd-id128.h" |
23 | #include "sd-messages.h" | |
4f5dd394 | 24 | |
b5efdb8a | 25 | #include "alloc-util.h" |
f485606b | 26 | #include "async.h" |
4f5dd394 | 27 | #include "dbus-job.h" |
8f8f05a9 | 28 | #include "dbus.h" |
4f5dd394 | 29 | #include "escape.h" |
6bedfcbb | 30 | #include "job.h" |
4f5dd394 LP |
31 | #include "log.h" |
32 | #include "macro.h" | |
6bedfcbb | 33 | #include "parse-util.h" |
4f5dd394 LP |
34 | #include "set.h" |
35 | #include "special.h" | |
d054f0a4 | 36 | #include "stdio-util.h" |
8b43440b | 37 | #include "string-table.h" |
07630cea | 38 | #include "string-util.h" |
4f5dd394 | 39 | #include "strv.h" |
288a74cc | 40 | #include "terminal-util.h" |
4f5dd394 LP |
41 | #include "unit.h" |
42 | #include "virt.h" | |
97e6a119 | 43 | |
39a18c60 | 44 | Job* job_new_raw(Unit *unit) { |
60918275 LP |
45 | Job *j; |
46 | ||
39a18c60 MS |
47 | /* used for deserialization */ |
48 | ||
87f0e418 | 49 | assert(unit); |
60918275 | 50 | |
39a18c60 MS |
51 | j = new0(Job, 1); |
52 | if (!j) | |
60918275 LP |
53 | return NULL; |
54 | ||
668ad332 | 55 | j->manager = unit->manager; |
87f0e418 | 56 | j->unit = unit; |
e0209d83 | 57 | j->type = _JOB_TYPE_INVALID; |
faf919f1 | 58 | |
39a18c60 MS |
59 | return j; |
60 | } | |
61 | ||
62 | Job* job_new(Unit *unit, JobType type) { | |
63 | Job *j; | |
64 | ||
65 | assert(type < _JOB_TYPE_MAX); | |
66 | ||
67 | j = job_new_raw(unit); | |
68 | if (!j) | |
69 | return NULL; | |
70 | ||
71 | j->id = j->manager->current_job_id++; | |
72 | j->type = type; | |
73 | ||
e5b5ae50 | 74 | /* We don't link it here, that's what job_dependency() is for */ |
60918275 LP |
75 | |
76 | return j; | |
77 | } | |
78 | ||
97e7d748 MS |
79 | void job_free(Job *j) { |
80 | assert(j); | |
81 | assert(!j->installed); | |
02a3bcc6 MS |
82 | assert(!j->transaction_prev); |
83 | assert(!j->transaction_next); | |
84 | assert(!j->subject_list); | |
85 | assert(!j->object_list); | |
60918275 | 86 | |
c1e1601e | 87 | if (j->in_run_queue) |
71fda00f | 88 | LIST_REMOVE(run_queue, j->manager->run_queue, j); |
c1e1601e LP |
89 | |
90 | if (j->in_dbus_queue) | |
71fda00f | 91 | LIST_REMOVE(dbus_queue, j->manager->dbus_job_queue, j); |
c1e1601e | 92 | |
718db961 | 93 | sd_event_source_unref(j->timer_event_source); |
faf919f1 | 94 | |
b39a2770 SW |
95 | sd_bus_track_unref(j->clients); |
96 | strv_free(j->deserialized_clients); | |
faf919f1 | 97 | |
60918275 LP |
98 | free(j); |
99 | } | |
a66d02c3 | 100 | |
9c3349e2 LP |
101 | static void job_set_state(Job *j, JobState state) { |
102 | assert(j); | |
103 | assert(state >= 0); | |
104 | assert(state < _JOB_STATE_MAX); | |
105 | ||
106 | if (j->state == state) | |
107 | return; | |
108 | ||
109 | j->state = state; | |
110 | ||
111 | if (!j->installed) | |
112 | return; | |
113 | ||
114 | if (j->state == JOB_RUNNING) | |
115 | j->unit->manager->n_running_jobs++; | |
116 | else { | |
117 | assert(j->state == JOB_WAITING); | |
118 | assert(j->unit->manager->n_running_jobs > 0); | |
119 | ||
120 | j->unit->manager->n_running_jobs--; | |
121 | ||
122 | if (j->unit->manager->n_running_jobs <= 0) | |
123 | j->unit->manager->jobs_in_progress_event_source = sd_event_source_unref(j->unit->manager->jobs_in_progress_event_source); | |
124 | } | |
125 | } | |
126 | ||
05d576f1 | 127 | void job_uninstall(Job *j) { |
e0209d83 MS |
128 | Job **pj; |
129 | ||
05d576f1 | 130 | assert(j->installed); |
e0209d83 | 131 | |
9c3349e2 LP |
132 | job_set_state(j, JOB_WAITING); |
133 | ||
e0209d83 MS |
134 | pj = (j->type == JOB_NOP) ? &j->unit->nop_job : &j->unit->job; |
135 | assert(*pj == j); | |
136 | ||
05d576f1 MS |
137 | /* Detach from next 'bigger' objects */ |
138 | ||
39a18c60 MS |
139 | /* daemon-reload should be transparent to job observers */ |
140 | if (j->manager->n_reloading <= 0) | |
141 | bus_job_send_removed_signal(j); | |
05d576f1 | 142 | |
e0209d83 MS |
143 | *pj = NULL; |
144 | ||
d6a093d0 | 145 | unit_add_to_gc_queue(j->unit); |
05d576f1 MS |
146 | |
147 | hashmap_remove(j->manager->jobs, UINT32_TO_PTR(j->id)); | |
148 | j->installed = false; | |
149 | } | |
150 | ||
656bbffc MS |
151 | static bool job_type_allows_late_merge(JobType t) { |
152 | /* Tells whether it is OK to merge a job of type 't' with an already | |
153 | * running job. | |
154 | * Reloads cannot be merged this way. Think of the sequence: | |
155 | * 1. Reload of a daemon is in progress; the daemon has already loaded | |
156 | * its config file, but hasn't completed the reload operation yet. | |
157 | * 2. Edit foo's config file. | |
158 | * 3. Trigger another reload to have the daemon use the new config. | |
159 | * Should the second reload job be merged into the first one, the daemon | |
160 | * would not know about the new config. | |
161 | * JOB_RESTART jobs on the other hand can be merged, because they get | |
162 | * patched into JOB_START after stopping the unit. So if we see a | |
163 | * JOB_RESTART running, it means the unit hasn't stopped yet and at | |
164 | * this time the merge is still allowed. */ | |
e0209d83 | 165 | return t != JOB_RELOAD; |
656bbffc MS |
166 | } |
167 | ||
168 | static void job_merge_into_installed(Job *j, Job *other) { | |
169 | assert(j->installed); | |
170 | assert(j->unit == other->unit); | |
171 | ||
e0209d83 MS |
172 | if (j->type != JOB_NOP) |
173 | job_type_merge_and_collapse(&j->type, other->type, j->unit); | |
174 | else | |
175 | assert(other->type == JOB_NOP); | |
656bbffc | 176 | |
23ade460 | 177 | j->irreversible = j->irreversible || other->irreversible; |
e45460d6 | 178 | j->ignore_order = j->ignore_order || other->ignore_order; |
656bbffc MS |
179 | } |
180 | ||
181 | Job* job_install(Job *j) { | |
e0209d83 MS |
182 | Job **pj; |
183 | Job *uj; | |
05d576f1 | 184 | |
656bbffc | 185 | assert(!j->installed); |
e0209d83 | 186 | assert(j->type < _JOB_TYPE_MAX_IN_TRANSACTION); |
9c3349e2 | 187 | assert(j->state == JOB_WAITING); |
e0209d83 MS |
188 | |
189 | pj = (j->type == JOB_NOP) ? &j->unit->nop_job : &j->unit->job; | |
190 | uj = *pj; | |
656bbffc | 191 | |
05d576f1 | 192 | if (uj) { |
61da906a | 193 | if (job_type_is_conflicting(uj->type, j->type)) |
1abc85b8 | 194 | job_finish_and_invalidate(uj, JOB_CANCELED, false); |
656bbffc MS |
195 | else { |
196 | /* not conflicting, i.e. mergeable */ | |
197 | ||
61da906a | 198 | if (uj->state == JOB_WAITING || |
656bbffc MS |
199 | (job_type_allows_late_merge(j->type) && job_type_is_superset(uj->type, j->type))) { |
200 | job_merge_into_installed(uj, j); | |
f2341e0a | 201 | log_unit_debug(uj->unit, |
66870f90 ZJS |
202 | "Merged into installed job %s/%s as %u", |
203 | uj->unit->id, job_type_to_string(uj->type), (unsigned) uj->id); | |
656bbffc MS |
204 | return uj; |
205 | } else { | |
206 | /* already running and not safe to merge into */ | |
207 | /* Patch uj to become a merged job and re-run it. */ | |
208 | /* XXX It should be safer to queue j to run after uj finishes, but it is | |
209 | * not currently possible to have more than one installed job per unit. */ | |
210 | job_merge_into_installed(uj, j); | |
f2341e0a | 211 | log_unit_debug(uj->unit, |
66870f90 ZJS |
212 | "Merged into running job, re-running: %s/%s as %u", |
213 | uj->unit->id, job_type_to_string(uj->type), (unsigned) uj->id); | |
9c3349e2 LP |
214 | |
215 | job_set_state(uj, JOB_WAITING); | |
656bbffc MS |
216 | return uj; |
217 | } | |
218 | } | |
05d576f1 MS |
219 | } |
220 | ||
656bbffc | 221 | /* Install the job */ |
e0209d83 | 222 | *pj = j; |
05d576f1 | 223 | j->installed = true; |
9c3349e2 | 224 | |
313cefa1 | 225 | j->manager->n_installed_jobs++; |
f2341e0a | 226 | log_unit_debug(j->unit, |
66870f90 ZJS |
227 | "Installed new job %s/%s as %u", |
228 | j->unit->id, job_type_to_string(j->type), (unsigned) j->id); | |
656bbffc | 229 | return j; |
05d576f1 MS |
230 | } |
231 | ||
e0209d83 MS |
232 | int job_install_deserialized(Job *j) { |
233 | Job **pj; | |
234 | ||
39a18c60 MS |
235 | assert(!j->installed); |
236 | ||
e0209d83 MS |
237 | if (j->type < 0 || j->type >= _JOB_TYPE_MAX_IN_TRANSACTION) { |
238 | log_debug("Invalid job type %s in deserialization.", strna(job_type_to_string(j->type))); | |
239 | return -EINVAL; | |
240 | } | |
241 | ||
242 | pj = (j->type == JOB_NOP) ? &j->unit->nop_job : &j->unit->job; | |
e0209d83 | 243 | if (*pj) { |
f2341e0a | 244 | log_unit_debug(j->unit, "Unit already has a job installed. Not installing deserialized job."); |
e0209d83 | 245 | return -EEXIST; |
39a18c60 | 246 | } |
9c3349e2 | 247 | |
e0209d83 | 248 | *pj = j; |
39a18c60 | 249 | j->installed = true; |
9c3349e2 LP |
250 | |
251 | if (j->state == JOB_RUNNING) | |
252 | j->unit->manager->n_running_jobs++; | |
253 | ||
f2341e0a | 254 | log_unit_debug(j->unit, |
66870f90 ZJS |
255 | "Reinstalled deserialized job %s/%s as %u", |
256 | j->unit->id, job_type_to_string(j->type), (unsigned) j->id); | |
e0209d83 | 257 | return 0; |
39a18c60 MS |
258 | } |
259 | ||
1da4264f | 260 | JobDependency* job_dependency_new(Job *subject, Job *object, bool matters, bool conflicts) { |
e5b5ae50 LP |
261 | JobDependency *l; |
262 | ||
263 | assert(object); | |
264 | ||
265 | /* Adds a new job link, which encodes that the 'subject' job | |
266 | * needs the 'object' job in some way. If 'subject' is NULL | |
267 | * this means the 'anchor' job (i.e. the one the user | |
35b8ca3a | 268 | * explicitly asked for) is the requester. */ |
e5b5ae50 | 269 | |
ceed3570 | 270 | if (!(l = new0(JobDependency, 1))) |
e5b5ae50 LP |
271 | return NULL; |
272 | ||
273 | l->subject = subject; | |
274 | l->object = object; | |
275 | l->matters = matters; | |
69dd2852 | 276 | l->conflicts = conflicts; |
e5b5ae50 | 277 | |
44d8db9e | 278 | if (subject) |
71fda00f | 279 | LIST_PREPEND(subject, subject->subject_list, l); |
e5b5ae50 | 280 | |
71fda00f | 281 | LIST_PREPEND(object, object->object_list, l); |
e5b5ae50 LP |
282 | |
283 | return l; | |
284 | } | |
285 | ||
1da4264f | 286 | void job_dependency_free(JobDependency *l) { |
e5b5ae50 LP |
287 | assert(l); |
288 | ||
44d8db9e | 289 | if (l->subject) |
71fda00f | 290 | LIST_REMOVE(subject, l->subject->subject_list, l); |
e5b5ae50 | 291 | |
71fda00f | 292 | LIST_REMOVE(object, l->object->object_list, l); |
e5b5ae50 LP |
293 | |
294 | free(l); | |
295 | } | |
296 | ||
1ffba6fe | 297 | void job_dump(Job *j, FILE*f, const char *prefix) { |
a66d02c3 LP |
298 | assert(j); |
299 | assert(f); | |
300 | ||
9eb63b3c LP |
301 | if (!prefix) |
302 | prefix = ""; | |
303 | ||
ceed3570 | 304 | fprintf(f, |
40d50879 LP |
305 | "%s-> Job %u:\n" |
306 | "%s\tAction: %s -> %s\n" | |
5cb5a6ff | 307 | "%s\tState: %s\n" |
23ade460 | 308 | "%s\tIrreversible: %s\n", |
ceed3570 | 309 | prefix, j->id, |
ac155bb8 | 310 | prefix, j->unit->id, job_type_to_string(j->type), |
94f04347 | 311 | prefix, job_state_to_string(j->state), |
23ade460 | 312 | prefix, yes_no(j->irreversible)); |
a66d02c3 | 313 | } |
e5b5ae50 | 314 | |
348e27fe MS |
315 | /* |
316 | * Merging is commutative, so imagine the matrix as symmetric. We store only | |
317 | * its lower triangle to avoid duplication. We don't store the main diagonal, | |
318 | * because A merged with A is simply A. | |
319 | * | |
e0209d83 MS |
320 | * If the resulting type is collapsed immediately afterwards (to get rid of |
321 | * the JOB_RELOAD_OR_START, which lies outside the lookup function's domain), | |
322 | * the following properties hold: | |
323 | * | |
48b4eab4 | 324 | * Merging is associative! A merged with B, and then merged with C is the same |
103635db | 325 | * as A merged with the result of B merged with C. |
348e27fe MS |
326 | * |
327 | * Mergeability is transitive! If A can be merged with B and B with C then | |
328 | * A also with C. | |
329 | * | |
330 | * Also, if A merged with B cannot be merged with C, then either A or B cannot | |
331 | * be merged with C either. | |
332 | */ | |
333 | static const JobType job_merging_table[] = { | |
e0209d83 MS |
334 | /* What \ With * JOB_START JOB_VERIFY_ACTIVE JOB_STOP JOB_RELOAD */ |
335 | /*********************************************************************************/ | |
348e27fe MS |
336 | /*JOB_START */ |
337 | /*JOB_VERIFY_ACTIVE */ JOB_START, | |
338 | /*JOB_STOP */ -1, -1, | |
339 | /*JOB_RELOAD */ JOB_RELOAD_OR_START, JOB_RELOAD, -1, | |
e0209d83 | 340 | /*JOB_RESTART */ JOB_RESTART, JOB_RESTART, -1, JOB_RESTART, |
348e27fe MS |
341 | }; |
342 | ||
343 | JobType job_type_lookup_merge(JobType a, JobType b) { | |
e0209d83 MS |
344 | assert_cc(ELEMENTSOF(job_merging_table) == _JOB_TYPE_MAX_MERGING * (_JOB_TYPE_MAX_MERGING - 1) / 2); |
345 | assert(a >= 0 && a < _JOB_TYPE_MAX_MERGING); | |
346 | assert(b >= 0 && b < _JOB_TYPE_MAX_MERGING); | |
1ffba6fe LP |
347 | |
348 | if (a == b) | |
348e27fe | 349 | return a; |
1ffba6fe | 350 | |
348e27fe MS |
351 | if (a < b) { |
352 | JobType tmp = a; | |
353 | a = b; | |
354 | b = tmp; | |
1ffba6fe | 355 | } |
e094e853 | 356 | |
348e27fe | 357 | return job_merging_table[(a - 1) * a / 2 + b]; |
e094e853 | 358 | } |
cd2dbd7d | 359 | |
593fbdd2 LP |
360 | bool job_type_is_redundant(JobType a, UnitActiveState b) { |
361 | switch (a) { | |
362 | ||
363 | case JOB_START: | |
364 | return | |
365 | b == UNIT_ACTIVE || | |
032ff4af | 366 | b == UNIT_RELOADING; |
593fbdd2 LP |
367 | |
368 | case JOB_STOP: | |
369 | return | |
6124958c | 370 | b == UNIT_INACTIVE || |
fdf20a31 | 371 | b == UNIT_FAILED; |
593fbdd2 LP |
372 | |
373 | case JOB_VERIFY_ACTIVE: | |
374 | return | |
375 | b == UNIT_ACTIVE || | |
032ff4af | 376 | b == UNIT_RELOADING; |
593fbdd2 LP |
377 | |
378 | case JOB_RELOAD: | |
379 | return | |
032ff4af | 380 | b == UNIT_RELOADING; |
593fbdd2 | 381 | |
593fbdd2 LP |
382 | case JOB_RESTART: |
383 | return | |
384 | b == UNIT_ACTIVATING; | |
385 | ||
7e803f5e MS |
386 | case JOB_NOP: |
387 | return true; | |
388 | ||
e0209d83 MS |
389 | default: |
390 | assert_not_reached("Invalid job type"); | |
391 | } | |
392 | } | |
393 | ||
c6497ccb | 394 | JobType job_type_collapse(JobType t, Unit *u) { |
e0209d83 MS |
395 | UnitActiveState s; |
396 | ||
c6497ccb | 397 | switch (t) { |
e0209d83 | 398 | |
593fbdd2 | 399 | case JOB_TRY_RESTART: |
e0209d83 MS |
400 | s = unit_active_state(u); |
401 | if (UNIT_IS_INACTIVE_OR_DEACTIVATING(s)) | |
c6497ccb LP |
402 | return JOB_NOP; |
403 | ||
404 | return JOB_RESTART; | |
e0209d83 | 405 | |
3282591d LP |
406 | case JOB_TRY_RELOAD: |
407 | s = unit_active_state(u); | |
408 | if (UNIT_IS_INACTIVE_OR_DEACTIVATING(s)) | |
409 | return JOB_NOP; | |
410 | ||
411 | return JOB_RELOAD; | |
412 | ||
e0209d83 MS |
413 | case JOB_RELOAD_OR_START: |
414 | s = unit_active_state(u); | |
415 | if (UNIT_IS_INACTIVE_OR_DEACTIVATING(s)) | |
c6497ccb LP |
416 | return JOB_START; |
417 | ||
418 | return JOB_RELOAD; | |
593fbdd2 LP |
419 | |
420 | default: | |
c6497ccb | 421 | return t; |
593fbdd2 LP |
422 | } |
423 | } | |
424 | ||
e0209d83 | 425 | int job_type_merge_and_collapse(JobType *a, JobType b, Unit *u) { |
c6497ccb LP |
426 | JobType t; |
427 | ||
428 | t = job_type_lookup_merge(*a, b); | |
e0209d83 MS |
429 | if (t < 0) |
430 | return -EEXIST; | |
c6497ccb LP |
431 | |
432 | *a = job_type_collapse(t, u); | |
e0209d83 MS |
433 | return 0; |
434 | } | |
435 | ||
9588bc32 | 436 | static bool job_is_runnable(Job *j) { |
034c6ed7 | 437 | Iterator i; |
87f0e418 | 438 | Unit *other; |
5cb5a6ff LP |
439 | |
440 | assert(j); | |
ac1135be | 441 | assert(j->installed); |
5cb5a6ff | 442 | |
87f0e418 | 443 | /* Checks whether there is any job running for the units this |
5cb5a6ff | 444 | * job needs to be running after (in the case of a 'positive' |
e67c3609 LP |
445 | * job type) or before (in the case of a 'negative' job |
446 | * type. */ | |
447 | ||
66ca4ec4 LP |
448 | /* Note that unit types have a say in what is runnable, |
449 | * too. For example, if they return -EAGAIN from | |
450 | * unit_start() they can indicate they are not | |
451 | * runnable yet. */ | |
452 | ||
e67c3609 | 453 | /* First check if there is an override */ |
cebe0d41 | 454 | if (j->ignore_order) |
e67c3609 | 455 | return true; |
5cb5a6ff | 456 | |
e0209d83 MS |
457 | if (j->type == JOB_NOP) |
458 | return true; | |
459 | ||
5cb5a6ff LP |
460 | if (j->type == JOB_START || |
461 | j->type == JOB_VERIFY_ACTIVE || | |
e0209d83 | 462 | j->type == JOB_RELOAD) { |
5cb5a6ff LP |
463 | |
464 | /* Immediate result is that the job is or might be | |
fc08079e | 465 | * started. In this case let's wait for the |
5cb5a6ff LP |
466 | * dependencies, regardless whether they are |
467 | * starting or stopping something. */ | |
468 | ||
ac155bb8 MS |
469 | SET_FOREACH(other, j->unit->dependencies[UNIT_AFTER], i) |
470 | if (other->job) | |
5cb5a6ff LP |
471 | return false; |
472 | } | |
473 | ||
474 | /* Also, if something else is being stopped and we should | |
fc08079e | 475 | * change state after it, then let's wait. */ |
5cb5a6ff | 476 | |
ac155bb8 MS |
477 | SET_FOREACH(other, j->unit->dependencies[UNIT_BEFORE], i) |
478 | if (other->job && | |
479 | (other->job->type == JOB_STOP || | |
e0209d83 | 480 | other->job->type == JOB_RESTART)) |
5cb5a6ff LP |
481 | return false; |
482 | ||
483 | /* This means that for a service a and a service b where b | |
484 | * shall be started after a: | |
485 | * | |
486 | * start a + start b → 1st step start a, 2nd step start b | |
487 | * start a + stop b → 1st step stop b, 2nd step start a | |
488 | * stop a + start b → 1st step stop a, 2nd step start b | |
489 | * stop a + stop b → 1st step stop b, 2nd step stop a | |
490 | * | |
491 | * This has the side effect that restarts are properly | |
492 | * synchronized too. */ | |
493 | ||
494 | return true; | |
495 | } | |
496 | ||
bbd1a837 | 497 | static void job_change_type(Job *j, JobType newtype) { |
f2341e0a LP |
498 | assert(j); |
499 | ||
500 | log_unit_debug(j->unit, | |
66870f90 ZJS |
501 | "Converting job %s/%s -> %s/%s", |
502 | j->unit->id, job_type_to_string(j->type), | |
503 | j->unit->id, job_type_to_string(newtype)); | |
bbd1a837 MS |
504 | |
505 | j->type = newtype; | |
506 | } | |
507 | ||
d1a34ae9 | 508 | static int job_perform_on_unit(Job **j) { |
df446f96 LP |
509 | uint32_t id; |
510 | Manager *m; | |
511 | JobType t; | |
512 | Unit *u; | |
d1a34ae9 MS |
513 | int r; |
514 | ||
df446f96 LP |
515 | /* While we execute this operation the job might go away (for |
516 | * example: because it finishes immediately or is replaced by | |
517 | * a new, conflicting job.) To make sure we don't access a | |
518 | * freed job later on we store the id here, so that we can | |
519 | * verify the job is still valid. */ | |
520 | ||
521 | assert(j); | |
522 | assert(*j); | |
523 | ||
524 | m = (*j)->manager; | |
525 | u = (*j)->unit; | |
526 | t = (*j)->type; | |
527 | id = (*j)->id; | |
528 | ||
d1a34ae9 MS |
529 | switch (t) { |
530 | case JOB_START: | |
531 | r = unit_start(u); | |
532 | break; | |
533 | ||
534 | case JOB_RESTART: | |
535 | t = JOB_STOP; | |
df446f96 | 536 | /* fall through */ |
d1a34ae9 MS |
537 | case JOB_STOP: |
538 | r = unit_stop(u); | |
539 | break; | |
540 | ||
541 | case JOB_RELOAD: | |
542 | r = unit_reload(u); | |
543 | break; | |
544 | ||
545 | default: | |
546 | assert_not_reached("Invalid job type"); | |
547 | } | |
548 | ||
549 | /* Log if the job still exists and the start/stop/reload function | |
550 | * actually did something. */ | |
551 | *j = manager_get_job(m, id); | |
552 | if (*j && r > 0) | |
553 | unit_status_emit_starting_stopping_reloading(u, t); | |
554 | ||
555 | return r; | |
556 | } | |
557 | ||
5cb5a6ff LP |
558 | int job_run_and_invalidate(Job *j) { |
559 | int r; | |
ac1135be | 560 | |
5cb5a6ff | 561 | assert(j); |
ac1135be | 562 | assert(j->installed); |
e0209d83 | 563 | assert(j->type < _JOB_TYPE_MAX_IN_TRANSACTION); |
66aa6f7f | 564 | assert(j->in_run_queue); |
5cb5a6ff | 565 | |
71fda00f | 566 | LIST_REMOVE(run_queue, j->manager->run_queue, j); |
66aa6f7f | 567 | j->in_run_queue = false; |
5cb5a6ff LP |
568 | |
569 | if (j->state != JOB_WAITING) | |
570 | return 0; | |
571 | ||
034c6ed7 LP |
572 | if (!job_is_runnable(j)) |
573 | return -EAGAIN; | |
574 | ||
9c3349e2 | 575 | job_set_state(j, JOB_RUNNING); |
c1e1601e | 576 | job_add_to_dbus_queue(j); |
83c60c9f | 577 | |
2cf19a7a | 578 | |
5cb5a6ff LP |
579 | switch (j->type) { |
580 | ||
5cb5a6ff | 581 | case JOB_VERIFY_ACTIVE: { |
87f0e418 LP |
582 | UnitActiveState t = unit_active_state(j->unit); |
583 | if (UNIT_IS_ACTIVE_OR_RELOADING(t)) | |
5cb5a6ff | 584 | r = -EALREADY; |
87f0e418 | 585 | else if (t == UNIT_ACTIVATING) |
5cb5a6ff LP |
586 | r = -EAGAIN; |
587 | else | |
6a371e23 | 588 | r = -EBADR; |
5cb5a6ff LP |
589 | break; |
590 | } | |
591 | ||
d1a34ae9 | 592 | case JOB_START: |
5cb5a6ff | 593 | case JOB_STOP: |
dd17d388 | 594 | case JOB_RESTART: |
d1a34ae9 | 595 | r = job_perform_on_unit(&j); |
57339f47 | 596 | |
d1a34ae9 MS |
597 | /* If the unit type does not support starting/stopping, |
598 | * then simply wait. */ | |
57339f47 LP |
599 | if (r == -EBADR) |
600 | r = 0; | |
5cb5a6ff LP |
601 | break; |
602 | ||
603 | case JOB_RELOAD: | |
d1a34ae9 | 604 | r = job_perform_on_unit(&j); |
5cb5a6ff LP |
605 | break; |
606 | ||
e0209d83 MS |
607 | case JOB_NOP: |
608 | r = -EALREADY; | |
609 | break; | |
610 | ||
5cb5a6ff | 611 | default: |
44d8db9e | 612 | assert_not_reached("Unknown job type"); |
5cb5a6ff LP |
613 | } |
614 | ||
e0209d83 | 615 | if (j) { |
2cf19a7a | 616 | if (r == -EALREADY) |
5273510e | 617 | r = job_finish_and_invalidate(j, JOB_DONE, true); |
6a371e23 | 618 | else if (r == -EBADR) |
5273510e | 619 | r = job_finish_and_invalidate(j, JOB_SKIPPED, true); |
6a371e23 ZJS |
620 | else if (r == -ENOEXEC) |
621 | r = job_finish_and_invalidate(j, JOB_INVALID, true); | |
59fccdc5 LP |
622 | else if (r == -EPROTO) |
623 | r = job_finish_and_invalidate(j, JOB_ASSERT, true); | |
15411c0c | 624 | else if (r == -EOPNOTSUPP) |
0faacd47 | 625 | r = job_finish_and_invalidate(j, JOB_UNSUPPORTED, true); |
9c3349e2 LP |
626 | else if (r == -EAGAIN) |
627 | job_set_state(j, JOB_WAITING); | |
628 | else if (r < 0) | |
5273510e | 629 | r = job_finish_and_invalidate(j, JOB_FAILED, true); |
2cf19a7a | 630 | } |
5cb5a6ff LP |
631 | |
632 | return r; | |
633 | } | |
634 | ||
44a6b1b6 | 635 | _pure_ static const char *job_get_status_message_format(Unit *u, JobType t, JobResult result) { |
df446f96 | 636 | |
aa49ab5f MS |
637 | static const char *const generic_finished_start_job[_JOB_RESULT_MAX] = { |
638 | [JOB_DONE] = "Started %s.", | |
639 | [JOB_TIMEOUT] = "Timed out starting %s.", | |
640 | [JOB_FAILED] = "Failed to start %s.", | |
641 | [JOB_DEPENDENCY] = "Dependency failed for %s.", | |
642 | [JOB_ASSERT] = "Assertion failed for %s.", | |
643 | [JOB_UNSUPPORTED] = "Starting of %s not supported.", | |
644 | }; | |
645 | static const char *const generic_finished_stop_job[_JOB_RESULT_MAX] = { | |
646 | [JOB_DONE] = "Stopped %s.", | |
647 | [JOB_FAILED] = "Stopped (with error) %s.", | |
648 | [JOB_TIMEOUT] = "Timed out stoppping %s.", | |
649 | }; | |
650 | static const char *const generic_finished_reload_job[_JOB_RESULT_MAX] = { | |
651 | [JOB_DONE] = "Reloaded %s.", | |
652 | [JOB_FAILED] = "Reload failed for %s.", | |
653 | [JOB_TIMEOUT] = "Timed out reloading %s.", | |
654 | }; | |
655 | /* When verify-active detects the unit is inactive, report it. | |
656 | * Most likely a DEPEND warning from a requisiting unit will | |
657 | * occur next and it's nice to see what was requisited. */ | |
658 | static const char *const generic_finished_verify_active_job[_JOB_RESULT_MAX] = { | |
659 | [JOB_SKIPPED] = "%s is not active.", | |
660 | }; | |
877d54e9 | 661 | |
df446f96 LP |
662 | const UnitStatusMessageFormats *format_table; |
663 | const char *format; | |
664 | ||
877d54e9 LP |
665 | assert(u); |
666 | assert(t >= 0); | |
667 | assert(t < _JOB_TYPE_MAX); | |
c6918296 | 668 | |
df446f96 | 669 | if (IN_SET(t, JOB_START, JOB_STOP, JOB_RESTART)) { |
aa49ab5f MS |
670 | format_table = &UNIT_VTABLE(u)->status_message_formats; |
671 | if (format_table) { | |
672 | format = t == JOB_START ? format_table->finished_start_job[result] : | |
673 | format_table->finished_stop_job[result]; | |
674 | if (format) | |
675 | return format; | |
676 | } | |
677 | } | |
877d54e9 | 678 | |
aa49ab5f | 679 | /* Return generic strings */ |
877d54e9 | 680 | if (t == JOB_START) |
aa49ab5f | 681 | return generic_finished_start_job[result]; |
877d54e9 | 682 | else if (t == JOB_STOP || t == JOB_RESTART) |
aa49ab5f MS |
683 | return generic_finished_stop_job[result]; |
684 | else if (t == JOB_RELOAD) | |
685 | return generic_finished_reload_job[result]; | |
686 | else if (t == JOB_VERIFY_ACTIVE) | |
687 | return generic_finished_verify_active_job[result]; | |
877d54e9 LP |
688 | |
689 | return NULL; | |
690 | } | |
691 | ||
692 | static void job_print_status_message(Unit *u, JobType t, JobResult result) { | |
dc9b5816 ZJS |
693 | static struct { |
694 | const char *color, *word; | |
695 | } const statuses[_JOB_RESULT_MAX] = { | |
696 | [JOB_DONE] = {ANSI_GREEN, " OK "}, | |
697 | [JOB_TIMEOUT] = {ANSI_HIGHLIGHT_RED, " TIME "}, | |
698 | [JOB_FAILED] = {ANSI_HIGHLIGHT_RED, "FAILED"}, | |
699 | [JOB_DEPENDENCY] = {ANSI_HIGHLIGHT_YELLOW, "DEPEND"}, | |
700 | [JOB_SKIPPED] = {ANSI_HIGHLIGHT, " INFO "}, | |
701 | [JOB_ASSERT] = {ANSI_HIGHLIGHT_YELLOW, "ASSERT"}, | |
702 | [JOB_UNSUPPORTED] = {ANSI_HIGHLIGHT_YELLOW, "UNSUPP"}, | |
aa49ab5f | 703 | }; |
e02cd6f7 | 704 | |
df446f96 | 705 | const char *format; |
dc9b5816 | 706 | const char *status; |
df446f96 | 707 | |
877d54e9 LP |
708 | assert(u); |
709 | assert(t >= 0); | |
710 | assert(t < _JOB_TYPE_MAX); | |
711 | ||
df446f96 LP |
712 | /* Reload status messages have traditionally not been printed to console. */ |
713 | if (t == JOB_RELOAD) | |
714 | return; | |
715 | ||
aa49ab5f MS |
716 | format = job_get_status_message_format(u, t, result); |
717 | if (!format) | |
718 | return; | |
e02cd6f7 | 719 | |
dc9b5816 ZJS |
720 | if (log_get_show_color()) |
721 | status = strjoina(statuses[result].color, statuses[result].word, ANSI_NORMAL); | |
722 | else | |
723 | status = statuses[result].word; | |
724 | ||
aa49ab5f MS |
725 | if (result != JOB_DONE) |
726 | manager_flip_auto_status(u->manager, true); | |
e02cd6f7 | 727 | |
aa49ab5f | 728 | DISABLE_WARNING_FORMAT_NONLITERAL; |
dc9b5816 | 729 | unit_status_printf(u, status, format); |
aa49ab5f | 730 | REENABLE_WARNING; |
7cf82e0b | 731 | |
aa49ab5f | 732 | if (t == JOB_START && result == JOB_FAILED) { |
df446f96 | 733 | _cleanup_free_ char *quoted; |
7cf82e0b | 734 | |
df446f96 LP |
735 | quoted = shell_maybe_quote(u->id); |
736 | manager_status_printf(u->manager, STATUS_TYPE_NORMAL, NULL, "See 'systemctl status %s' for details.", strna(quoted)); | |
e02cd6f7 LP |
737 | } |
738 | } | |
739 | ||
877d54e9 LP |
740 | static void job_log_status_message(Unit *u, JobType t, JobResult result) { |
741 | const char *format; | |
742 | char buf[LINE_MAX]; | |
b81bbe53 | 743 | sd_id128_t mid; |
64f575d2 MS |
744 | static const int job_result_log_level[_JOB_RESULT_MAX] = { |
745 | [JOB_DONE] = LOG_INFO, | |
746 | [JOB_CANCELED] = LOG_INFO, | |
747 | [JOB_TIMEOUT] = LOG_ERR, | |
748 | [JOB_FAILED] = LOG_ERR, | |
749 | [JOB_DEPENDENCY] = LOG_WARNING, | |
750 | [JOB_SKIPPED] = LOG_NOTICE, | |
751 | [JOB_INVALID] = LOG_INFO, | |
752 | [JOB_ASSERT] = LOG_WARNING, | |
753 | [JOB_UNSUPPORTED] = LOG_WARNING, | |
754 | }; | |
877d54e9 LP |
755 | |
756 | assert(u); | |
757 | assert(t >= 0); | |
758 | assert(t < _JOB_TYPE_MAX); | |
759 | ||
81270860 LP |
760 | /* Skip this if it goes to the console. since we already print |
761 | * to the console anyway... */ | |
762 | ||
763 | if (log_on_console()) | |
764 | return; | |
765 | ||
aa49ab5f | 766 | format = job_get_status_message_format(u, t, result); |
877d54e9 LP |
767 | if (!format) |
768 | return; | |
769 | ||
bcfce235 | 770 | DISABLE_WARNING_FORMAT_NONLITERAL; |
d054f0a4 | 771 | xsprintf(buf, format, unit_description(u)); |
bcfce235 | 772 | REENABLE_WARNING; |
877d54e9 | 773 | |
df446f96 LP |
774 | switch (t) { |
775 | ||
776 | case JOB_START: | |
877d54e9 | 777 | mid = result == JOB_DONE ? SD_MESSAGE_UNIT_STARTED : SD_MESSAGE_UNIT_FAILED; |
df446f96 LP |
778 | break; |
779 | ||
780 | case JOB_RELOAD: | |
b81bbe53 | 781 | mid = SD_MESSAGE_UNIT_RELOADED; |
df446f96 LP |
782 | break; |
783 | ||
784 | case JOB_STOP: | |
785 | case JOB_RESTART: | |
786 | mid = SD_MESSAGE_UNIT_STOPPED; | |
787 | break; | |
788 | ||
789 | default: | |
64f575d2 | 790 | log_struct(job_result_log_level[result], |
4f29c6fe MS |
791 | LOG_UNIT_ID(u), |
792 | LOG_MESSAGE("%s", buf), | |
793 | "RESULT=%s", job_result_to_string(result), | |
794 | NULL); | |
b81bbe53 MS |
795 | return; |
796 | } | |
797 | ||
64f575d2 | 798 | log_struct(job_result_log_level[result], |
b81bbe53 MS |
799 | LOG_MESSAGE_ID(mid), |
800 | LOG_UNIT_ID(u), | |
801 | LOG_MESSAGE("%s", buf), | |
802 | "RESULT=%s", job_result_to_string(result), | |
803 | NULL); | |
877d54e9 | 804 | } |
877d54e9 | 805 | |
30961fa3 MS |
806 | static void job_emit_status_message(Unit *u, JobType t, JobResult result) { |
807 | ||
808 | /* No message if the job did not actually do anything due to failed condition. */ | |
809 | if (t == JOB_START && result == JOB_DONE && !u->condition_result) | |
810 | return; | |
811 | ||
812 | job_log_status_message(u, t, result); | |
df446f96 | 813 | job_print_status_message(u, t, result); |
30961fa3 MS |
814 | } |
815 | ||
be7d9ff7 LP |
816 | static void job_fail_dependencies(Unit *u, UnitDependency d) { |
817 | Unit *other; | |
818 | Iterator i; | |
819 | ||
820 | assert(u); | |
821 | ||
822 | SET_FOREACH(other, u->dependencies[d], i) { | |
823 | Job *j = other->job; | |
824 | ||
825 | if (!j) | |
826 | continue; | |
827 | if (!IN_SET(j->type, JOB_START, JOB_VERIFY_ACTIVE)) | |
828 | continue; | |
829 | ||
830 | job_finish_and_invalidate(j, JOB_DEPENDENCY, true); | |
831 | } | |
832 | } | |
833 | ||
5273510e | 834 | int job_finish_and_invalidate(Job *j, JobResult result, bool recursive) { |
87f0e418 LP |
835 | Unit *u; |
836 | Unit *other; | |
b866264a | 837 | JobType t; |
034c6ed7 | 838 | Iterator i; |
5cb5a6ff LP |
839 | |
840 | assert(j); | |
ac1135be | 841 | assert(j->installed); |
e0209d83 | 842 | assert(j->type < _JOB_TYPE_MAX_IN_TRANSACTION); |
5cb5a6ff | 843 | |
c6918296 MS |
844 | u = j->unit; |
845 | t = j->type; | |
846 | ||
847 | j->result = result; | |
848 | ||
f2341e0a | 849 | log_unit_debug(u, "Job %s/%s finished, result=%s", u->id, job_type_to_string(t), job_result_to_string(result)); |
c6918296 | 850 | |
30961fa3 | 851 | job_emit_status_message(u, t, result); |
c6918296 | 852 | |
c1e1601e | 853 | job_add_to_dbus_queue(j); |
f50e0a01 | 854 | |
034c6ed7 | 855 | /* Patch restart jobs so that they become normal start jobs */ |
c6918296 | 856 | if (result == JOB_DONE && t == JOB_RESTART) { |
f50e0a01 | 857 | |
bbd1a837 | 858 | job_change_type(j, JOB_START); |
9c3349e2 | 859 | job_set_state(j, JOB_WAITING); |
cc42e081 LP |
860 | |
861 | job_add_to_run_queue(j); | |
57981b98 | 862 | |
57981b98 | 863 | goto finish; |
5cb5a6ff LP |
864 | } |
865 | ||
6a371e23 | 866 | if (result == JOB_FAILED || result == JOB_INVALID) |
313cefa1 | 867 | j->manager->n_failed_jobs++; |
76bf48b7 | 868 | |
97e7d748 | 869 | job_uninstall(j); |
5cb5a6ff LP |
870 | job_free(j); |
871 | ||
872 | /* Fail depending jobs on failure */ | |
5273510e | 873 | if (result != JOB_DONE && recursive) { |
be7d9ff7 LP |
874 | if (IN_SET(t, JOB_START, JOB_VERIFY_ACTIVE)) { |
875 | job_fail_dependencies(u, UNIT_REQUIRED_BY); | |
876 | job_fail_dependencies(u, UNIT_REQUISITE_OF); | |
877 | job_fail_dependencies(u, UNIT_BOUND_BY); | |
be7d9ff7 LP |
878 | } else if (t == JOB_STOP) |
879 | job_fail_dependencies(u, UNIT_CONFLICTED_BY); | |
5cb5a6ff LP |
880 | } |
881 | ||
c0daa706 | 882 | /* Trigger OnFailure dependencies that are not generated by |
66870f90 | 883 | * the unit itself. We don't treat JOB_CANCELED as failure in |
c0daa706 LP |
884 | * this context. And JOB_FAILURE is already handled by the |
885 | * unit itself. */ | |
222ae6a8 | 886 | if (result == JOB_TIMEOUT || result == JOB_DEPENDENCY) { |
f2341e0a LP |
887 | log_struct(LOG_NOTICE, |
888 | "JOB_TYPE=%s", job_type_to_string(t), | |
889 | "JOB_RESULT=%s", job_result_to_string(result), | |
890 | LOG_UNIT_ID(u), | |
891 | LOG_UNIT_MESSAGE(u, "Job %s/%s failed with result '%s'.", | |
e2cc6eca LP |
892 | u->id, |
893 | job_type_to_string(t), | |
894 | job_result_to_string(result)), | |
f2341e0a | 895 | NULL); |
222ae6a8 | 896 | |
3ecaa09b | 897 | unit_start_on_failure(u); |
222ae6a8 | 898 | } |
c0daa706 | 899 | |
3ecaa09b LP |
900 | unit_trigger_notify(u); |
901 | ||
57981b98 | 902 | finish: |
5cb5a6ff | 903 | /* Try to start the next jobs that can be started */ |
ac155bb8 MS |
904 | SET_FOREACH(other, u->dependencies[UNIT_AFTER], i) |
905 | if (other->job) | |
906 | job_add_to_run_queue(other->job); | |
907 | SET_FOREACH(other, u->dependencies[UNIT_BEFORE], i) | |
908 | if (other->job) | |
909 | job_add_to_run_queue(other->job); | |
5cb5a6ff | 910 | |
ac155bb8 | 911 | manager_check_finished(u->manager); |
b0c918b9 | 912 | |
5273510e | 913 | return 0; |
5cb5a6ff | 914 | } |
034c6ed7 | 915 | |
718db961 LP |
916 | static int job_dispatch_timer(sd_event_source *s, uint64_t monotonic, void *userdata) { |
917 | Job *j = userdata; | |
f189ab18 | 918 | Unit *u; |
faf919f1 | 919 | |
718db961 LP |
920 | assert(j); |
921 | assert(s == j->timer_event_source); | |
faf919f1 | 922 | |
f2341e0a | 923 | log_unit_warning(j->unit, "Job %s/%s timed out.", j->unit->id, job_type_to_string(j->type)); |
faf919f1 | 924 | |
f189ab18 | 925 | u = j->unit; |
718db961 | 926 | job_finish_and_invalidate(j, JOB_TIMEOUT, true); |
f189ab18 LP |
927 | |
928 | failure_action(u->manager, u->job_timeout_action, u->job_timeout_reboot_arg); | |
929 | ||
718db961 LP |
930 | return 0; |
931 | } | |
faf919f1 | 932 | |
718db961 LP |
933 | int job_start_timer(Job *j) { |
934 | int r; | |
faf919f1 | 935 | |
8bb310c3 | 936 | if (j->timer_event_source) |
718db961 | 937 | return 0; |
faf919f1 | 938 | |
718db961 | 939 | j->begin_usec = now(CLOCK_MONOTONIC); |
faf919f1 | 940 | |
36c16a7c | 941 | if (j->unit->job_timeout == USEC_INFINITY) |
8bb310c3 ZJS |
942 | return 0; |
943 | ||
6a0f1f6d LP |
944 | r = sd_event_add_time( |
945 | j->manager->event, | |
946 | &j->timer_event_source, | |
947 | CLOCK_MONOTONIC, | |
36c16a7c | 948 | usec_add(j->begin_usec, j->unit->job_timeout), 0, |
6a0f1f6d | 949 | job_dispatch_timer, j); |
718db961 LP |
950 | if (r < 0) |
951 | return r; | |
faf919f1 | 952 | |
7dfbe2e3 TG |
953 | (void) sd_event_source_set_description(j->timer_event_source, "job-start"); |
954 | ||
718db961 | 955 | return 0; |
faf919f1 LP |
956 | } |
957 | ||
c1e1601e | 958 | void job_add_to_run_queue(Job *j) { |
034c6ed7 | 959 | assert(j); |
ac1135be | 960 | assert(j->installed); |
034c6ed7 LP |
961 | |
962 | if (j->in_run_queue) | |
963 | return; | |
964 | ||
752b5905 LP |
965 | if (!j->manager->run_queue) |
966 | sd_event_source_set_enabled(j->manager->run_queue_event_source, SD_EVENT_ONESHOT); | |
967 | ||
71fda00f | 968 | LIST_PREPEND(run_queue, j->manager->run_queue, j); |
034c6ed7 LP |
969 | j->in_run_queue = true; |
970 | } | |
94f04347 | 971 | |
c1e1601e LP |
972 | void job_add_to_dbus_queue(Job *j) { |
973 | assert(j); | |
974 | assert(j->installed); | |
975 | ||
976 | if (j->in_dbus_queue) | |
977 | return; | |
978 | ||
a567261a LP |
979 | /* We don't check if anybody is subscribed here, since this |
980 | * job might just have been created and not yet assigned to a | |
981 | * connection/client. */ | |
94b6dfa2 | 982 | |
71fda00f | 983 | LIST_PREPEND(dbus_queue, j->manager->dbus_job_queue, j); |
c1e1601e LP |
984 | j->in_dbus_queue = true; |
985 | } | |
986 | ||
ea430986 LP |
987 | char *job_dbus_path(Job *j) { |
988 | char *p; | |
989 | ||
990 | assert(j); | |
991 | ||
ccd06097 | 992 | if (asprintf(&p, "/org/freedesktop/systemd1/job/%"PRIu32, j->id) < 0) |
ea430986 LP |
993 | return NULL; |
994 | ||
995 | return p; | |
996 | } | |
997 | ||
39a18c60 MS |
998 | int job_serialize(Job *j, FILE *f, FDSet *fds) { |
999 | fprintf(f, "job-id=%u\n", j->id); | |
1000 | fprintf(f, "job-type=%s\n", job_type_to_string(j->type)); | |
1001 | fprintf(f, "job-state=%s\n", job_state_to_string(j->state)); | |
23ade460 | 1002 | fprintf(f, "job-irreversible=%s\n", yes_no(j->irreversible)); |
39a18c60 MS |
1003 | fprintf(f, "job-sent-dbus-new-signal=%s\n", yes_no(j->sent_dbus_new_signal)); |
1004 | fprintf(f, "job-ignore-order=%s\n", yes_no(j->ignore_order)); | |
718db961 LP |
1005 | |
1006 | if (j->begin_usec > 0) | |
ccd06097 | 1007 | fprintf(f, "job-begin="USEC_FMT"\n", j->begin_usec); |
718db961 | 1008 | |
b39a2770 | 1009 | bus_track_serialize(j->clients, f); |
39a18c60 MS |
1010 | |
1011 | /* End marker */ | |
1012 | fputc('\n', f); | |
1013 | return 0; | |
1014 | } | |
1015 | ||
1016 | int job_deserialize(Job *j, FILE *f, FDSet *fds) { | |
718db961 LP |
1017 | assert(j); |
1018 | ||
39a18c60 MS |
1019 | for (;;) { |
1020 | char line[LINE_MAX], *l, *v; | |
1021 | size_t k; | |
1022 | ||
1023 | if (!fgets(line, sizeof(line), f)) { | |
1024 | if (feof(f)) | |
1025 | return 0; | |
1026 | return -errno; | |
1027 | } | |
1028 | ||
1029 | char_array_0(line); | |
1030 | l = strstrip(line); | |
1031 | ||
1032 | /* End marker */ | |
1033 | if (l[0] == 0) | |
1034 | return 0; | |
1035 | ||
1036 | k = strcspn(l, "="); | |
1037 | ||
1038 | if (l[k] == '=') { | |
1039 | l[k] = 0; | |
1040 | v = l+k+1; | |
1041 | } else | |
1042 | v = l+k; | |
1043 | ||
1044 | if (streq(l, "job-id")) { | |
718db961 | 1045 | |
39a18c60 MS |
1046 | if (safe_atou32(v, &j->id) < 0) |
1047 | log_debug("Failed to parse job id value %s", v); | |
718db961 | 1048 | |
39a18c60 | 1049 | } else if (streq(l, "job-type")) { |
718db961 LP |
1050 | JobType t; |
1051 | ||
1052 | t = job_type_from_string(v); | |
39a18c60 MS |
1053 | if (t < 0) |
1054 | log_debug("Failed to parse job type %s", v); | |
e0209d83 MS |
1055 | else if (t >= _JOB_TYPE_MAX_IN_TRANSACTION) |
1056 | log_debug("Cannot deserialize job of type %s", v); | |
39a18c60 MS |
1057 | else |
1058 | j->type = t; | |
718db961 | 1059 | |
39a18c60 | 1060 | } else if (streq(l, "job-state")) { |
718db961 LP |
1061 | JobState s; |
1062 | ||
1063 | s = job_state_from_string(v); | |
39a18c60 MS |
1064 | if (s < 0) |
1065 | log_debug("Failed to parse job state %s", v); | |
1066 | else | |
9c3349e2 | 1067 | job_set_state(j, s); |
718db961 | 1068 | |
23ade460 | 1069 | } else if (streq(l, "job-irreversible")) { |
718db961 LP |
1070 | int b; |
1071 | ||
1072 | b = parse_boolean(v); | |
23ade460 MS |
1073 | if (b < 0) |
1074 | log_debug("Failed to parse job irreversible flag %s", v); | |
1075 | else | |
1076 | j->irreversible = j->irreversible || b; | |
718db961 | 1077 | |
39a18c60 | 1078 | } else if (streq(l, "job-sent-dbus-new-signal")) { |
718db961 LP |
1079 | int b; |
1080 | ||
1081 | b = parse_boolean(v); | |
39a18c60 MS |
1082 | if (b < 0) |
1083 | log_debug("Failed to parse job sent_dbus_new_signal flag %s", v); | |
1084 | else | |
1085 | j->sent_dbus_new_signal = j->sent_dbus_new_signal || b; | |
718db961 | 1086 | |
39a18c60 | 1087 | } else if (streq(l, "job-ignore-order")) { |
718db961 LP |
1088 | int b; |
1089 | ||
1090 | b = parse_boolean(v); | |
39a18c60 MS |
1091 | if (b < 0) |
1092 | log_debug("Failed to parse job ignore_order flag %s", v); | |
1093 | else | |
1094 | j->ignore_order = j->ignore_order || b; | |
718db961 LP |
1095 | |
1096 | } else if (streq(l, "job-begin")) { | |
1097 | unsigned long long ull; | |
1098 | ||
1099 | if (sscanf(v, "%llu", &ull) != 1) | |
1100 | log_debug("Failed to parse job-begin value %s", v); | |
39a18c60 | 1101 | else |
718db961 LP |
1102 | j->begin_usec = ull; |
1103 | ||
8f8f05a9 | 1104 | } else if (streq(l, "subscribed")) { |
718db961 | 1105 | |
b39a2770 | 1106 | if (strv_extend(&j->deserialized_clients, v) < 0) |
8f8f05a9 | 1107 | return log_oom(); |
39a18c60 MS |
1108 | } |
1109 | } | |
1110 | } | |
1111 | ||
1112 | int job_coldplug(Job *j) { | |
718db961 LP |
1113 | int r; |
1114 | ||
1115 | assert(j); | |
39a18c60 | 1116 | |
8f8f05a9 LP |
1117 | /* After deserialization is complete and the bus connection |
1118 | * set up again, let's start watching our subscribers again */ | |
b39a2770 | 1119 | r = bus_track_coldplug(j->manager, &j->clients, &j->deserialized_clients); |
8f8f05a9 LP |
1120 | if (r < 0) |
1121 | return r; | |
1122 | ||
1727a595 MM |
1123 | if (j->state == JOB_WAITING) |
1124 | job_add_to_run_queue(j); | |
1125 | ||
36c16a7c | 1126 | if (j->begin_usec == 0 || j->unit->job_timeout == USEC_INFINITY) |
39a18c60 MS |
1127 | return 0; |
1128 | ||
36c16a7c | 1129 | j->timer_event_source = sd_event_source_unref(j->timer_event_source); |
39a18c60 | 1130 | |
6a0f1f6d LP |
1131 | r = sd_event_add_time( |
1132 | j->manager->event, | |
1133 | &j->timer_event_source, | |
1134 | CLOCK_MONOTONIC, | |
36c16a7c | 1135 | usec_add(j->begin_usec, j->unit->job_timeout), 0, |
6a0f1f6d | 1136 | job_dispatch_timer, j); |
718db961 | 1137 | if (r < 0) |
da927ba9 | 1138 | log_debug_errno(r, "Failed to restart timeout for job: %m"); |
718db961 | 1139 | |
7dfbe2e3 TG |
1140 | (void) sd_event_source_set_description(j->timer_event_source, "job-timeout"); |
1141 | ||
718db961 | 1142 | return r; |
39a18c60 MS |
1143 | } |
1144 | ||
c65eb836 LP |
1145 | void job_shutdown_magic(Job *j) { |
1146 | assert(j); | |
1147 | ||
1148 | /* The shutdown target gets some special treatment here: we | |
1149 | * tell the kernel to begin with flushing its disk caches, to | |
1150 | * optimize shutdown time a bit. Ideally we wouldn't hardcode | |
1151 | * this magic into PID 1. However all other processes aren't | |
1152 | * options either since they'd exit much sooner than PID 1 and | |
1153 | * asynchronous sync() would cause their exit to be | |
1154 | * delayed. */ | |
1155 | ||
c2756a68 | 1156 | if (j->type != JOB_START) |
c65eb836 LP |
1157 | return; |
1158 | ||
b2c23da8 | 1159 | if (j->unit->manager->running_as != MANAGER_SYSTEM) |
c2756a68 LP |
1160 | return; |
1161 | ||
1162 | if (!unit_has_name(j->unit, SPECIAL_SHUTDOWN_TARGET)) | |
c65eb836 LP |
1163 | return; |
1164 | ||
5b1869ea OB |
1165 | /* In case messages on console has been disabled on boot */ |
1166 | j->unit->manager->no_console_output = false; | |
1167 | ||
75f86906 | 1168 | if (detect_container() > 0) |
c65eb836 LP |
1169 | return; |
1170 | ||
1171 | asynchronous_sync(); | |
1172 | } | |
1173 | ||
7a7821c8 LP |
1174 | int job_get_timeout(Job *j, usec_t *timeout) { |
1175 | usec_t x = USEC_INFINITY, y = USEC_INFINITY; | |
68db7a3b | 1176 | Unit *u = j->unit; |
7a7821c8 | 1177 | int r; |
68db7a3b ZJS |
1178 | |
1179 | assert(u); | |
1180 | ||
1181 | if (j->timer_event_source) { | |
1182 | r = sd_event_source_get_time(j->timer_event_source, &x); | |
1183 | if (r < 0) | |
1184 | return r; | |
68db7a3b ZJS |
1185 | } |
1186 | ||
1187 | if (UNIT_VTABLE(u)->get_timeout) { | |
7a7821c8 LP |
1188 | r = UNIT_VTABLE(u)->get_timeout(u, &y); |
1189 | if (r < 0) | |
1190 | return r; | |
68db7a3b ZJS |
1191 | } |
1192 | ||
7a7821c8 | 1193 | if (x == USEC_INFINITY && y == USEC_INFINITY) |
68db7a3b ZJS |
1194 | return 0; |
1195 | ||
1196 | *timeout = MIN(x, y); | |
68db7a3b ZJS |
1197 | return 1; |
1198 | } | |
1199 | ||
94f04347 LP |
1200 | static const char* const job_state_table[_JOB_STATE_MAX] = { |
1201 | [JOB_WAITING] = "waiting", | |
1202 | [JOB_RUNNING] = "running" | |
1203 | }; | |
1204 | ||
1205 | DEFINE_STRING_TABLE_LOOKUP(job_state, JobState); | |
1206 | ||
1207 | static const char* const job_type_table[_JOB_TYPE_MAX] = { | |
1208 | [JOB_START] = "start", | |
1209 | [JOB_VERIFY_ACTIVE] = "verify-active", | |
1210 | [JOB_STOP] = "stop", | |
1211 | [JOB_RELOAD] = "reload", | |
1212 | [JOB_RELOAD_OR_START] = "reload-or-start", | |
1213 | [JOB_RESTART] = "restart", | |
1214 | [JOB_TRY_RESTART] = "try-restart", | |
3282591d | 1215 | [JOB_TRY_RELOAD] = "try-reload", |
e0209d83 | 1216 | [JOB_NOP] = "nop", |
94f04347 LP |
1217 | }; |
1218 | ||
1219 | DEFINE_STRING_TABLE_LOOKUP(job_type, JobType); | |
b548631a LP |
1220 | |
1221 | static const char* const job_mode_table[_JOB_MODE_MAX] = { | |
1222 | [JOB_FAIL] = "fail", | |
c497c7a9 | 1223 | [JOB_REPLACE] = "replace", |
23ade460 | 1224 | [JOB_REPLACE_IRREVERSIBLY] = "replace-irreversibly", |
e67c3609 | 1225 | [JOB_ISOLATE] = "isolate", |
2c5859af | 1226 | [JOB_FLUSH] = "flush", |
cebe0d41 | 1227 | [JOB_IGNORE_DEPENDENCIES] = "ignore-dependencies", |
255baef6 | 1228 | [JOB_IGNORE_REQUIREMENTS] = "ignore-requirements", |
b548631a LP |
1229 | }; |
1230 | ||
1231 | DEFINE_STRING_TABLE_LOOKUP(job_mode, JobMode); | |
5d44db4a LP |
1232 | |
1233 | static const char* const job_result_table[_JOB_RESULT_MAX] = { | |
1234 | [JOB_DONE] = "done", | |
1235 | [JOB_CANCELED] = "canceled", | |
1236 | [JOB_TIMEOUT] = "timeout", | |
1237 | [JOB_FAILED] = "failed", | |
d68201e9 | 1238 | [JOB_DEPENDENCY] = "dependency", |
6a371e23 ZJS |
1239 | [JOB_SKIPPED] = "skipped", |
1240 | [JOB_INVALID] = "invalid", | |
59fccdc5 | 1241 | [JOB_ASSERT] = "assert", |
0faacd47 | 1242 | [JOB_UNSUPPORTED] = "unsupported", |
5d44db4a LP |
1243 | }; |
1244 | ||
1245 | DEFINE_STRING_TABLE_LOOKUP(job_result, JobResult); | |
94bd7323 EV |
1246 | |
1247 | const char* job_type_to_access_method(JobType t) { | |
1248 | assert(t >= 0); | |
1249 | assert(t < _JOB_TYPE_MAX); | |
1250 | ||
1251 | if (IN_SET(t, JOB_START, JOB_RESTART, JOB_TRY_RESTART)) | |
1252 | return "start"; | |
1253 | else if (t == JOB_STOP) | |
1254 | return "stop"; | |
1255 | else | |
1256 | return "reload"; | |
1257 | } |