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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
a7334b09 | 2 | |
1ffba6fe | 3 | #include <errno.h> |
60918275 | 4 | |
718db961 LP |
5 | #include "sd-id128.h" |
6 | #include "sd-messages.h" | |
4f5dd394 | 7 | |
b5efdb8a | 8 | #include "alloc-util.h" |
f485606b | 9 | #include "async.h" |
da8e1782 | 10 | #include "cgroup.h" |
4f5dd394 | 11 | #include "dbus-job.h" |
8f8f05a9 | 12 | #include "dbus.h" |
4f5dd394 | 13 | #include "escape.h" |
8948b341 | 14 | #include "fileio.h" |
6bedfcbb | 15 | #include "job.h" |
4f5dd394 LP |
16 | #include "log.h" |
17 | #include "macro.h" | |
6bedfcbb | 18 | #include "parse-util.h" |
d68c645b | 19 | #include "serialize.h" |
4f5dd394 | 20 | #include "set.h" |
760877e9 | 21 | #include "sort-util.h" |
4f5dd394 | 22 | #include "special.h" |
d054f0a4 | 23 | #include "stdio-util.h" |
8b43440b | 24 | #include "string-table.h" |
07630cea | 25 | #include "string-util.h" |
4f5dd394 | 26 | #include "strv.h" |
288a74cc | 27 | #include "terminal-util.h" |
4f5dd394 LP |
28 | #include "unit.h" |
29 | #include "virt.h" | |
97e6a119 | 30 | |
39a18c60 | 31 | Job* job_new_raw(Unit *unit) { |
60918275 LP |
32 | Job *j; |
33 | ||
39a18c60 MS |
34 | /* used for deserialization */ |
35 | ||
87f0e418 | 36 | assert(unit); |
60918275 | 37 | |
08ac00f2 | 38 | j = new(Job, 1); |
39a18c60 | 39 | if (!j) |
60918275 LP |
40 | return NULL; |
41 | ||
08ac00f2 LP |
42 | *j = (Job) { |
43 | .manager = unit->manager, | |
44 | .unit = unit, | |
45 | .type = _JOB_TYPE_INVALID, | |
46 | }; | |
faf919f1 | 47 | |
39a18c60 MS |
48 | return j; |
49 | } | |
50 | ||
51 | Job* job_new(Unit *unit, JobType type) { | |
52 | Job *j; | |
53 | ||
54 | assert(type < _JOB_TYPE_MAX); | |
55 | ||
56 | j = job_new_raw(unit); | |
57 | if (!j) | |
58 | return NULL; | |
59 | ||
60 | j->id = j->manager->current_job_id++; | |
61 | j->type = type; | |
62 | ||
e5b5ae50 | 63 | /* We don't link it here, that's what job_dependency() is for */ |
60918275 LP |
64 | |
65 | return j; | |
66 | } | |
67 | ||
a7a7163d | 68 | void job_unlink(Job *j) { |
97e7d748 MS |
69 | assert(j); |
70 | assert(!j->installed); | |
02a3bcc6 MS |
71 | assert(!j->transaction_prev); |
72 | assert(!j->transaction_next); | |
73 | assert(!j->subject_list); | |
74 | assert(!j->object_list); | |
60918275 | 75 | |
a7a7163d | 76 | if (j->in_run_queue) { |
da8e1782 | 77 | prioq_remove(j->manager->run_queue, j, &j->run_queue_idx); |
a7a7163d DT |
78 | j->in_run_queue = false; |
79 | } | |
c1e1601e | 80 | |
a7a7163d | 81 | if (j->in_dbus_queue) { |
71fda00f | 82 | LIST_REMOVE(dbus_queue, j->manager->dbus_job_queue, j); |
a7a7163d DT |
83 | j->in_dbus_queue = false; |
84 | } | |
c1e1601e | 85 | |
a7a7163d | 86 | if (j->in_gc_queue) { |
c5a97ed1 | 87 | LIST_REMOVE(gc_queue, j->manager->gc_job_queue, j); |
a7a7163d DT |
88 | j->in_gc_queue = false; |
89 | } | |
c5a97ed1 | 90 | |
5dcadb4c | 91 | j->timer_event_source = sd_event_source_disable_unref(j->timer_event_source); |
a7a7163d DT |
92 | } |
93 | ||
728ba51e | 94 | Job* job_free(Job *j) { |
a7a7163d DT |
95 | assert(j); |
96 | assert(!j->installed); | |
97 | assert(!j->transaction_prev); | |
98 | assert(!j->transaction_next); | |
99 | assert(!j->subject_list); | |
100 | assert(!j->object_list); | |
101 | ||
102 | job_unlink(j); | |
faf919f1 | 103 | |
1a465207 | 104 | sd_bus_track_unref(j->bus_track); |
b39a2770 | 105 | strv_free(j->deserialized_clients); |
faf919f1 | 106 | |
48b92b37 LB |
107 | activation_details_unref(j->activation_details); |
108 | ||
728ba51e | 109 | return mfree(j); |
60918275 | 110 | } |
a66d02c3 | 111 | |
9c3349e2 LP |
112 | static void job_set_state(Job *j, JobState state) { |
113 | assert(j); | |
114 | assert(state >= 0); | |
115 | assert(state < _JOB_STATE_MAX); | |
116 | ||
117 | if (j->state == state) | |
118 | return; | |
119 | ||
120 | j->state = state; | |
121 | ||
122 | if (!j->installed) | |
123 | return; | |
124 | ||
125 | if (j->state == JOB_RUNNING) | |
126 | j->unit->manager->n_running_jobs++; | |
127 | else { | |
128 | assert(j->state == JOB_WAITING); | |
129 | assert(j->unit->manager->n_running_jobs > 0); | |
130 | ||
131 | j->unit->manager->n_running_jobs--; | |
132 | ||
133 | if (j->unit->manager->n_running_jobs <= 0) | |
5dcadb4c | 134 | j->unit->manager->jobs_in_progress_event_source = sd_event_source_disable_unref(j->unit->manager->jobs_in_progress_event_source); |
9c3349e2 LP |
135 | } |
136 | } | |
137 | ||
05d576f1 | 138 | void job_uninstall(Job *j) { |
e0209d83 MS |
139 | Job **pj; |
140 | ||
05d576f1 | 141 | assert(j->installed); |
e0209d83 | 142 | |
9c3349e2 LP |
143 | job_set_state(j, JOB_WAITING); |
144 | ||
0b6a4795 | 145 | pj = j->type == JOB_NOP ? &j->unit->nop_job : &j->unit->job; |
e0209d83 MS |
146 | assert(*pj == j); |
147 | ||
05d576f1 MS |
148 | /* Detach from next 'bigger' objects */ |
149 | ||
39a18c60 | 150 | /* daemon-reload should be transparent to job observers */ |
2c289ea8 | 151 | if (!MANAGER_IS_RELOADING(j->manager)) |
39a18c60 | 152 | bus_job_send_removed_signal(j); |
05d576f1 | 153 | |
e0209d83 MS |
154 | *pj = NULL; |
155 | ||
d6a093d0 | 156 | unit_add_to_gc_queue(j->unit); |
05d576f1 | 157 | |
52c6c9ea AM |
158 | unit_add_to_dbus_queue(j->unit); /* The Job property of the unit has changed now */ |
159 | ||
48235ad6 | 160 | hashmap_remove_value(j->manager->jobs, UINT32_TO_PTR(j->id), j); |
05d576f1 MS |
161 | j->installed = false; |
162 | } | |
163 | ||
656bbffc MS |
164 | static bool job_type_allows_late_merge(JobType t) { |
165 | /* Tells whether it is OK to merge a job of type 't' with an already | |
166 | * running job. | |
167 | * Reloads cannot be merged this way. Think of the sequence: | |
168 | * 1. Reload of a daemon is in progress; the daemon has already loaded | |
169 | * its config file, but hasn't completed the reload operation yet. | |
170 | * 2. Edit foo's config file. | |
171 | * 3. Trigger another reload to have the daemon use the new config. | |
172 | * Should the second reload job be merged into the first one, the daemon | |
173 | * would not know about the new config. | |
174 | * JOB_RESTART jobs on the other hand can be merged, because they get | |
175 | * patched into JOB_START after stopping the unit. So if we see a | |
176 | * JOB_RESTART running, it means the unit hasn't stopped yet and at | |
177 | * this time the merge is still allowed. */ | |
e0209d83 | 178 | return t != JOB_RELOAD; |
656bbffc MS |
179 | } |
180 | ||
181 | static void job_merge_into_installed(Job *j, Job *other) { | |
182 | assert(j->installed); | |
183 | assert(j->unit == other->unit); | |
184 | ||
48b92b37 | 185 | if (j->type != JOB_NOP) { |
53a2383b | 186 | assert_se(job_type_merge_and_collapse(&j->type, other->type, j->unit) == 0); |
48b92b37 LB |
187 | |
188 | /* Keep the oldest ActivationDetails, if any */ | |
189 | if (!j->activation_details) | |
190 | j->activation_details = TAKE_PTR(other->activation_details); | |
191 | } else | |
e0209d83 | 192 | assert(other->type == JOB_NOP); |
656bbffc | 193 | |
23ade460 | 194 | j->irreversible = j->irreversible || other->irreversible; |
e45460d6 | 195 | j->ignore_order = j->ignore_order || other->ignore_order; |
656bbffc MS |
196 | } |
197 | ||
198 | Job* job_install(Job *j) { | |
e0209d83 MS |
199 | Job **pj; |
200 | Job *uj; | |
05d576f1 | 201 | |
656bbffc | 202 | assert(!j->installed); |
e0209d83 | 203 | assert(j->type < _JOB_TYPE_MAX_IN_TRANSACTION); |
9c3349e2 | 204 | assert(j->state == JOB_WAITING); |
e0209d83 | 205 | |
0b6a4795 | 206 | pj = j->type == JOB_NOP ? &j->unit->nop_job : &j->unit->job; |
e0209d83 | 207 | uj = *pj; |
656bbffc | 208 | |
05d576f1 | 209 | if (uj) { |
61da906a | 210 | if (job_type_is_conflicting(uj->type, j->type)) |
833f92ad | 211 | job_finish_and_invalidate(uj, JOB_CANCELED, false, false); |
656bbffc MS |
212 | else { |
213 | /* not conflicting, i.e. mergeable */ | |
214 | ||
61da906a | 215 | if (uj->state == JOB_WAITING || |
656bbffc MS |
216 | (job_type_allows_late_merge(j->type) && job_type_is_superset(uj->type, j->type))) { |
217 | job_merge_into_installed(uj, j); | |
f2341e0a | 218 | log_unit_debug(uj->unit, |
28d78d07 | 219 | "Merged %s/%s into installed job %s/%s as %"PRIu32, |
92e29d82 | 220 | j->unit->id, job_type_to_string(j->type), uj->unit->id, |
28d78d07 | 221 | job_type_to_string(uj->type), uj->id); |
656bbffc MS |
222 | return uj; |
223 | } else { | |
224 | /* already running and not safe to merge into */ | |
225 | /* Patch uj to become a merged job and re-run it. */ | |
226 | /* XXX It should be safer to queue j to run after uj finishes, but it is | |
227 | * not currently possible to have more than one installed job per unit. */ | |
228 | job_merge_into_installed(uj, j); | |
f2341e0a | 229 | log_unit_debug(uj->unit, |
28d78d07 JK |
230 | "Merged into running job, re-running: %s/%s as %"PRIu32, |
231 | uj->unit->id, job_type_to_string(uj->type), uj->id); | |
9c3349e2 LP |
232 | |
233 | job_set_state(uj, JOB_WAITING); | |
656bbffc MS |
234 | return uj; |
235 | } | |
236 | } | |
05d576f1 MS |
237 | } |
238 | ||
656bbffc | 239 | /* Install the job */ |
e0209d83 | 240 | *pj = j; |
05d576f1 | 241 | j->installed = true; |
9c3349e2 | 242 | |
313cefa1 | 243 | j->manager->n_installed_jobs++; |
f2341e0a | 244 | log_unit_debug(j->unit, |
66870f90 ZJS |
245 | "Installed new job %s/%s as %u", |
246 | j->unit->id, job_type_to_string(j->type), (unsigned) j->id); | |
c5a97ed1 LP |
247 | |
248 | job_add_to_gc_queue(j); | |
249 | ||
e6d05912 LP |
250 | job_add_to_dbus_queue(j); /* announce this job to clients */ |
251 | unit_add_to_dbus_queue(j->unit); /* The Job property of the unit has changed now */ | |
252 | ||
656bbffc | 253 | return j; |
05d576f1 MS |
254 | } |
255 | ||
e0209d83 MS |
256 | int job_install_deserialized(Job *j) { |
257 | Job **pj; | |
b17c9620 | 258 | int r; |
e0209d83 | 259 | |
39a18c60 MS |
260 | assert(!j->installed); |
261 | ||
baaa35ad | 262 | if (j->type < 0 || j->type >= _JOB_TYPE_MAX_IN_TRANSACTION) |
b17c9620 | 263 | return log_unit_debug_errno(j->unit, SYNTHETIC_ERRNO(EINVAL), |
baaa35ad ZJS |
264 | "Invalid job type %s in deserialization.", |
265 | strna(job_type_to_string(j->type))); | |
e0209d83 | 266 | |
0b6a4795 | 267 | pj = j->type == JOB_NOP ? &j->unit->nop_job : &j->unit->job; |
b17c9620 LP |
268 | if (*pj) |
269 | return log_unit_debug_errno(j->unit, SYNTHETIC_ERRNO(EEXIST), | |
270 | "Unit already has a job installed. Not installing deserialized job."); | |
271 | ||
53dba3ef | 272 | r = hashmap_ensure_put(&j->manager->jobs, NULL, UINT32_TO_PTR(j->id), j); |
b17c9620 LP |
273 | if (r == -EEXIST) |
274 | return log_unit_debug_errno(j->unit, r, "Job ID %" PRIu32 " already used, cannot deserialize job.", j->id); | |
275 | if (r < 0) | |
276 | return log_unit_debug_errno(j->unit, r, "Failed to insert job into jobs hash table: %m"); | |
9c3349e2 | 277 | |
e0209d83 | 278 | *pj = j; |
39a18c60 | 279 | j->installed = true; |
9c3349e2 LP |
280 | |
281 | if (j->state == JOB_RUNNING) | |
282 | j->unit->manager->n_running_jobs++; | |
283 | ||
f2341e0a | 284 | log_unit_debug(j->unit, |
66870f90 ZJS |
285 | "Reinstalled deserialized job %s/%s as %u", |
286 | j->unit->id, job_type_to_string(j->type), (unsigned) j->id); | |
e0209d83 | 287 | return 0; |
39a18c60 MS |
288 | } |
289 | ||
1da4264f | 290 | JobDependency* job_dependency_new(Job *subject, Job *object, bool matters, bool conflicts) { |
e5b5ae50 LP |
291 | JobDependency *l; |
292 | ||
293 | assert(object); | |
294 | ||
295 | /* Adds a new job link, which encodes that the 'subject' job | |
296 | * needs the 'object' job in some way. If 'subject' is NULL | |
297 | * this means the 'anchor' job (i.e. the one the user | |
35b8ca3a | 298 | * explicitly asked for) is the requester. */ |
e5b5ae50 | 299 | |
0a23a627 LP |
300 | l = new0(JobDependency, 1); |
301 | if (!l) | |
e5b5ae50 LP |
302 | return NULL; |
303 | ||
304 | l->subject = subject; | |
305 | l->object = object; | |
306 | l->matters = matters; | |
69dd2852 | 307 | l->conflicts = conflicts; |
e5b5ae50 | 308 | |
44d8db9e | 309 | if (subject) |
71fda00f | 310 | LIST_PREPEND(subject, subject->subject_list, l); |
e5b5ae50 | 311 | |
71fda00f | 312 | LIST_PREPEND(object, object->object_list, l); |
e5b5ae50 LP |
313 | |
314 | return l; | |
315 | } | |
316 | ||
1da4264f | 317 | void job_dependency_free(JobDependency *l) { |
e5b5ae50 LP |
318 | assert(l); |
319 | ||
44d8db9e | 320 | if (l->subject) |
71fda00f | 321 | LIST_REMOVE(subject, l->subject->subject_list, l); |
e5b5ae50 | 322 | |
71fda00f | 323 | LIST_REMOVE(object, l->object->object_list, l); |
e5b5ae50 LP |
324 | |
325 | free(l); | |
326 | } | |
327 | ||
f2a3de01 | 328 | void job_dump(Job *j, FILE *f, const char *prefix) { |
a66d02c3 LP |
329 | assert(j); |
330 | assert(f); | |
331 | ||
ad5d4b17 | 332 | prefix = strempty(prefix); |
9eb63b3c | 333 | |
ceed3570 | 334 | fprintf(f, |
40d50879 LP |
335 | "%s-> Job %u:\n" |
336 | "%s\tAction: %s -> %s\n" | |
5cb5a6ff | 337 | "%s\tState: %s\n" |
f698d99c ZJS |
338 | "%s\tIrreversible: %s\n" |
339 | "%s\tMay GC: %s\n", | |
ceed3570 | 340 | prefix, j->id, |
ac155bb8 | 341 | prefix, j->unit->id, job_type_to_string(j->type), |
94f04347 | 342 | prefix, job_state_to_string(j->state), |
f698d99c ZJS |
343 | prefix, yes_no(j->irreversible), |
344 | prefix, yes_no(job_may_gc(j))); | |
a66d02c3 | 345 | } |
e5b5ae50 | 346 | |
348e27fe MS |
347 | /* |
348 | * Merging is commutative, so imagine the matrix as symmetric. We store only | |
349 | * its lower triangle to avoid duplication. We don't store the main diagonal, | |
350 | * because A merged with A is simply A. | |
351 | * | |
e0209d83 MS |
352 | * If the resulting type is collapsed immediately afterwards (to get rid of |
353 | * the JOB_RELOAD_OR_START, which lies outside the lookup function's domain), | |
354 | * the following properties hold: | |
355 | * | |
48b4eab4 | 356 | * Merging is associative! A merged with B, and then merged with C is the same |
103635db | 357 | * as A merged with the result of B merged with C. |
348e27fe MS |
358 | * |
359 | * Mergeability is transitive! If A can be merged with B and B with C then | |
360 | * A also with C. | |
361 | * | |
362 | * Also, if A merged with B cannot be merged with C, then either A or B cannot | |
363 | * be merged with C either. | |
364 | */ | |
365 | static const JobType job_merging_table[] = { | |
e0209d83 MS |
366 | /* What \ With * JOB_START JOB_VERIFY_ACTIVE JOB_STOP JOB_RELOAD */ |
367 | /*********************************************************************************/ | |
348e27fe MS |
368 | /*JOB_START */ |
369 | /*JOB_VERIFY_ACTIVE */ JOB_START, | |
370 | /*JOB_STOP */ -1, -1, | |
371 | /*JOB_RELOAD */ JOB_RELOAD_OR_START, JOB_RELOAD, -1, | |
e0209d83 | 372 | /*JOB_RESTART */ JOB_RESTART, JOB_RESTART, -1, JOB_RESTART, |
348e27fe MS |
373 | }; |
374 | ||
375 | JobType job_type_lookup_merge(JobType a, JobType b) { | |
e0209d83 MS |
376 | assert_cc(ELEMENTSOF(job_merging_table) == _JOB_TYPE_MAX_MERGING * (_JOB_TYPE_MAX_MERGING - 1) / 2); |
377 | assert(a >= 0 && a < _JOB_TYPE_MAX_MERGING); | |
378 | assert(b >= 0 && b < _JOB_TYPE_MAX_MERGING); | |
1ffba6fe LP |
379 | |
380 | if (a == b) | |
348e27fe | 381 | return a; |
1ffba6fe | 382 | |
348e27fe MS |
383 | if (a < b) { |
384 | JobType tmp = a; | |
385 | a = b; | |
386 | b = tmp; | |
1ffba6fe | 387 | } |
e094e853 | 388 | |
348e27fe | 389 | return job_merging_table[(a - 1) * a / 2 + b]; |
e094e853 | 390 | } |
cd2dbd7d | 391 | |
cc479760 DR |
392 | bool job_type_is_redundant(JobType a, UnitActiveState b) { |
393 | switch (a) { | |
593fbdd2 LP |
394 | |
395 | case JOB_START: | |
cc479760 | 396 | return IN_SET(b, UNIT_ACTIVE, UNIT_RELOADING); |
593fbdd2 LP |
397 | |
398 | case JOB_STOP: | |
cc479760 | 399 | return IN_SET(b, UNIT_INACTIVE, UNIT_FAILED); |
593fbdd2 LP |
400 | |
401 | case JOB_VERIFY_ACTIVE: | |
cc479760 | 402 | return IN_SET(b, UNIT_ACTIVE, UNIT_RELOADING); |
593fbdd2 LP |
403 | |
404 | case JOB_RELOAD: | |
405 | return | |
cc479760 | 406 | b == UNIT_RELOADING; |
593fbdd2 | 407 | |
593fbdd2 | 408 | case JOB_RESTART: |
dc06321f AS |
409 | /* Restart jobs must always be kept. |
410 | * | |
411 | * For ACTIVE/RELOADING units, this is obvious. | |
412 | * | |
413 | * For ACTIVATING units, it's more subtle: | |
414 | * | |
415 | * Generally, if a service Requires= another unit, restarts of | |
416 | * the unit must be propagated to the service. If the service is | |
417 | * ACTIVATING, it must still be restarted since it might have | |
418 | * stale information regarding the other unit. | |
419 | * | |
420 | * For example, consider a service that Requires= a socket: if | |
421 | * the socket is restarted, but the service is still ACTIVATING, | |
422 | * it's necessary to restart the service so that it gets the new | |
423 | * socket. */ | |
424 | return false; | |
593fbdd2 | 425 | |
7e803f5e MS |
426 | case JOB_NOP: |
427 | return true; | |
428 | ||
e0209d83 | 429 | default: |
04499a70 | 430 | assert_not_reached(); |
e0209d83 MS |
431 | } |
432 | } | |
433 | ||
c6497ccb | 434 | JobType job_type_collapse(JobType t, Unit *u) { |
e0209d83 MS |
435 | UnitActiveState s; |
436 | ||
c6497ccb | 437 | switch (t) { |
e0209d83 | 438 | |
593fbdd2 | 439 | case JOB_TRY_RESTART: |
dc06321f AS |
440 | /* Be sure to keep the restart job even if the unit is |
441 | * ACTIVATING. | |
442 | * | |
443 | * See the job_type_is_redundant(JOB_RESTART) for more info */ | |
e0209d83 | 444 | s = unit_active_state(u); |
dc06321f | 445 | if (!UNIT_IS_ACTIVE_OR_ACTIVATING(s)) |
c6497ccb LP |
446 | return JOB_NOP; |
447 | ||
448 | return JOB_RESTART; | |
e0209d83 | 449 | |
3282591d LP |
450 | case JOB_TRY_RELOAD: |
451 | s = unit_active_state(u); | |
d1559793 | 452 | if (!UNIT_IS_ACTIVE_OR_RELOADING(s)) |
3282591d LP |
453 | return JOB_NOP; |
454 | ||
455 | return JOB_RELOAD; | |
456 | ||
e0209d83 MS |
457 | case JOB_RELOAD_OR_START: |
458 | s = unit_active_state(u); | |
d1559793 | 459 | if (!UNIT_IS_ACTIVE_OR_RELOADING(s)) |
c6497ccb LP |
460 | return JOB_START; |
461 | ||
462 | return JOB_RELOAD; | |
593fbdd2 LP |
463 | |
464 | default: | |
c6497ccb | 465 | return t; |
593fbdd2 LP |
466 | } |
467 | } | |
468 | ||
e0209d83 | 469 | int job_type_merge_and_collapse(JobType *a, JobType b, Unit *u) { |
c6497ccb LP |
470 | JobType t; |
471 | ||
472 | t = job_type_lookup_merge(*a, b); | |
e0209d83 MS |
473 | if (t < 0) |
474 | return -EEXIST; | |
c6497ccb LP |
475 | |
476 | *a = job_type_collapse(t, u); | |
e0209d83 MS |
477 | return 0; |
478 | } | |
479 | ||
9588bc32 | 480 | static bool job_is_runnable(Job *j) { |
87f0e418 | 481 | Unit *other; |
5cb5a6ff LP |
482 | |
483 | assert(j); | |
ac1135be | 484 | assert(j->installed); |
5cb5a6ff | 485 | |
87f0e418 | 486 | /* Checks whether there is any job running for the units this |
5cb5a6ff | 487 | * job needs to be running after (in the case of a 'positive' |
e67c3609 LP |
488 | * job type) or before (in the case of a 'negative' job |
489 | * type. */ | |
490 | ||
66ca4ec4 LP |
491 | /* Note that unit types have a say in what is runnable, |
492 | * too. For example, if they return -EAGAIN from | |
493 | * unit_start() they can indicate they are not | |
494 | * runnable yet. */ | |
495 | ||
e67c3609 | 496 | /* First check if there is an override */ |
cebe0d41 | 497 | if (j->ignore_order) |
e67c3609 | 498 | return true; |
5cb5a6ff | 499 | |
e0209d83 MS |
500 | if (j->type == JOB_NOP) |
501 | return true; | |
502 | ||
15ed3c3a LP |
503 | UNIT_FOREACH_DEPENDENCY(other, j->unit, UNIT_ATOM_AFTER) |
504 | if (other->job && job_compare(j, other->job, UNIT_ATOM_AFTER) > 0) { | |
c03fbd37 LB |
505 | log_unit_debug(j->unit, |
506 | "starting held back, waiting for: %s", | |
507 | other->id); | |
e602f152 | 508 | return false; |
c03fbd37 | 509 | } |
5cb5a6ff | 510 | |
15ed3c3a LP |
511 | UNIT_FOREACH_DEPENDENCY(other, j->unit, UNIT_ATOM_BEFORE) |
512 | if (other->job && job_compare(j, other->job, UNIT_ATOM_BEFORE) > 0) { | |
c03fbd37 LB |
513 | log_unit_debug(j->unit, |
514 | "stopping held back, waiting for: %s", | |
515 | other->id); | |
5cb5a6ff | 516 | return false; |
c03fbd37 | 517 | } |
5cb5a6ff | 518 | |
5cb5a6ff LP |
519 | return true; |
520 | } | |
521 | ||
bbd1a837 | 522 | static void job_change_type(Job *j, JobType newtype) { |
f2341e0a LP |
523 | assert(j); |
524 | ||
525 | log_unit_debug(j->unit, | |
66870f90 ZJS |
526 | "Converting job %s/%s -> %s/%s", |
527 | j->unit->id, job_type_to_string(j->type), | |
528 | j->unit->id, job_type_to_string(newtype)); | |
bbd1a837 MS |
529 | |
530 | j->type = newtype; | |
531 | } | |
532 | ||
04d232d8 | 533 | static const char* job_start_message_format(Unit *u, JobType t) { |
33a3fdd9 | 534 | assert(u); |
04d232d8 | 535 | assert(IN_SET(t, JOB_START, JOB_STOP, JOB_RELOAD)); |
a69b3872 LP |
536 | |
537 | if (t == JOB_RELOAD) | |
04d232d8 ZJS |
538 | return "Reloading %s..."; |
539 | else if (t == JOB_START) | |
540 | return UNIT_VTABLE(u)->status_message_formats.starting_stopping[0] ?: "Starting %s..."; | |
541 | else | |
542 | return UNIT_VTABLE(u)->status_message_formats.starting_stopping[1] ?: "Stopping %s..."; | |
543 | } | |
a69b3872 | 544 | |
04d232d8 ZJS |
545 | static void job_emit_start_message(Unit *u, uint32_t job_id, JobType t) { |
546 | _cleanup_free_ char *free_ident = NULL; | |
547 | const char *ident, *format; | |
a69b3872 | 548 | |
04d232d8 ZJS |
549 | assert(u); |
550 | assert(t >= 0); | |
551 | assert(t < _JOB_TYPE_MAX); | |
552 | assert(u->id); /* We better don't try to run a unit that doesn't even have an id. */ | |
33a3fdd9 | 553 | |
04d232d8 ZJS |
554 | if (!IN_SET(t, JOB_START, JOB_STOP, JOB_RELOAD)) |
555 | return; | |
556 | ||
557 | if (!unit_log_level_test(u, LOG_INFO)) | |
558 | return; | |
559 | ||
560 | format = job_start_message_format(u, t); | |
561 | ident = unit_status_string(u, &free_ident); | |
562 | ||
563 | bool do_console = t != JOB_RELOAD; | |
564 | bool console_only = do_console && log_on_console(); /* Reload status messages have traditionally | |
565 | * not been printed to the console. */ | |
566 | ||
567 | /* Print to the log first. */ | |
568 | if (!console_only) { /* Skip this if it would only go on the console anyway */ | |
569 | ||
570 | const char *mid = | |
571 | t == JOB_START ? "MESSAGE_ID=" SD_MESSAGE_UNIT_STARTING_STR : | |
572 | t == JOB_STOP ? "MESSAGE_ID=" SD_MESSAGE_UNIT_STOPPING_STR : | |
573 | "MESSAGE_ID=" SD_MESSAGE_UNIT_RELOADING_STR; | |
574 | const char *msg_fmt = strjoina("MESSAGE=", format); | |
575 | ||
576 | /* Note that we deliberately use LOG_MESSAGE() instead of LOG_UNIT_MESSAGE() here, since this | |
577 | * is supposed to mimic closely what is written to screen using the status output, which is | |
578 | * supposed to be high level friendly output. */ | |
579 | ||
580 | DISABLE_WARNING_FORMAT_NONLITERAL; | |
581 | log_unit_struct(u, LOG_INFO, | |
582 | msg_fmt, ident, | |
583 | "JOB_ID=%" PRIu32, job_id, | |
584 | "JOB_TYPE=%s", job_type_to_string(t), | |
585 | LOG_UNIT_INVOCATION_ID(u), | |
586 | mid); | |
587 | REENABLE_WARNING; | |
588 | } | |
589 | ||
590 | /* Log to the console second. */ | |
591 | if (do_console) { | |
592 | DISABLE_WARNING_FORMAT_NONLITERAL; | |
593 | unit_status_printf(u, STATUS_TYPE_NORMAL, "", format, ident); | |
594 | REENABLE_WARNING; | |
a69b3872 | 595 | } |
33a3fdd9 LP |
596 | } |
597 | ||
b8643ee2 | 598 | static const char* job_done_message_format(Unit *u, JobType t, JobResult result) { |
04d232d8 ZJS |
599 | static const char* const generic_finished_start_job[_JOB_RESULT_MAX] = { |
600 | [JOB_DONE] = "Started %s.", | |
601 | [JOB_TIMEOUT] = "Timed out starting %s.", | |
602 | [JOB_FAILED] = "Failed to start %s.", | |
603 | [JOB_DEPENDENCY] = "Dependency failed for %s.", | |
604 | [JOB_ASSERT] = "Assertion failed for %s.", | |
605 | [JOB_UNSUPPORTED] = "Starting of %s unsupported.", | |
606 | [JOB_COLLECTED] = "Unnecessary job was removed for %s.", | |
607 | [JOB_ONCE] = "Unit %s has been started before and cannot be started again.", | |
608 | }; | |
609 | static const char* const generic_finished_stop_job[_JOB_RESULT_MAX] = { | |
610 | [JOB_DONE] = "Stopped %s.", | |
611 | [JOB_FAILED] = "Stopped %s with error.", | |
612 | [JOB_TIMEOUT] = "Timed out stopping %s.", | |
613 | }; | |
614 | static const char* const generic_finished_reload_job[_JOB_RESULT_MAX] = { | |
615 | [JOB_DONE] = "Reloaded %s.", | |
616 | [JOB_FAILED] = "Reload failed for %s.", | |
617 | [JOB_TIMEOUT] = "Timed out reloading %s.", | |
618 | }; | |
619 | /* When verify-active detects the unit is inactive, report it. | |
620 | * Most likely a DEPEND warning from a requisiting unit will | |
621 | * occur next and it's nice to see what was requisited. */ | |
622 | static const char* const generic_finished_verify_active_job[_JOB_RESULT_MAX] = { | |
623 | [JOB_SKIPPED] = "%s is inactive.", | |
624 | }; | |
33a3fdd9 LP |
625 | const char *format; |
626 | ||
627 | assert(u); | |
04d232d8 ZJS |
628 | assert(t >= 0); |
629 | assert(t < _JOB_TYPE_MAX); | |
33a3fdd9 | 630 | |
413e8650 | 631 | /* Show condition check message if the job did not actually do anything due to unmet condition. */ |
b8643ee2 LP |
632 | if (t == JOB_START && result == JOB_DONE && !u->condition_result) |
633 | return "Condition check resulted in %s being skipped."; | |
04d232d8 ZJS |
634 | |
635 | if (IN_SET(t, JOB_START, JOB_STOP, JOB_RESTART)) { | |
636 | const UnitStatusMessageFormats *formats = &UNIT_VTABLE(u)->status_message_formats; | |
637 | if (formats->finished_job) { | |
638 | format = formats->finished_job(u, t, result); | |
639 | if (format) | |
b8643ee2 | 640 | return format; |
04d232d8 | 641 | } |
33a3fdd9 | 642 | |
04d232d8 ZJS |
643 | format = (t == JOB_START ? formats->finished_start_job : formats->finished_stop_job)[result]; |
644 | if (format) | |
b8643ee2 | 645 | return format; |
04d232d8 | 646 | } |
33a3fdd9 | 647 | |
04d232d8 ZJS |
648 | /* Return generic strings */ |
649 | switch (t) { | |
650 | case JOB_START: | |
b8643ee2 | 651 | return generic_finished_start_job[result]; |
04d232d8 ZJS |
652 | case JOB_STOP: |
653 | case JOB_RESTART: | |
b8643ee2 | 654 | return generic_finished_stop_job[result]; |
04d232d8 | 655 | case JOB_RELOAD: |
b8643ee2 | 656 | return generic_finished_reload_job[result]; |
04d232d8 | 657 | case JOB_VERIFY_ACTIVE: |
b8643ee2 | 658 | return generic_finished_verify_active_job[result]; |
04d232d8 ZJS |
659 | default: |
660 | return NULL; | |
661 | } | |
662 | } | |
663 | ||
664 | static const struct { | |
665 | int log_level; | |
666 | const char *color, *word; | |
667 | } job_done_messages[_JOB_RESULT_MAX] = { | |
668 | [JOB_DONE] = { LOG_INFO, ANSI_OK_COLOR, " OK " }, | |
669 | [JOB_CANCELED] = { LOG_INFO, }, | |
670 | [JOB_TIMEOUT] = { LOG_ERR, ANSI_HIGHLIGHT_RED, " TIME " }, | |
671 | [JOB_FAILED] = { LOG_ERR, ANSI_HIGHLIGHT_RED, "FAILED" }, | |
672 | [JOB_DEPENDENCY] = { LOG_WARNING, ANSI_HIGHLIGHT_YELLOW, "DEPEND" }, | |
673 | [JOB_SKIPPED] = { LOG_NOTICE, ANSI_HIGHLIGHT, " INFO " }, | |
674 | [JOB_INVALID] = { LOG_INFO, }, | |
675 | [JOB_ASSERT] = { LOG_WARNING, ANSI_HIGHLIGHT_YELLOW, "ASSERT" }, | |
676 | [JOB_UNSUPPORTED] = { LOG_WARNING, ANSI_HIGHLIGHT_YELLOW, "UNSUPP" }, | |
677 | [JOB_COLLECTED] = { LOG_INFO, }, | |
678 | [JOB_ONCE] = { LOG_ERR, ANSI_HIGHLIGHT_RED, " ONCE " }, | |
679 | }; | |
680 | ||
681 | static const char* job_done_mid(JobType type, JobResult result) { | |
682 | switch (type) { | |
683 | case JOB_START: | |
684 | if (result == JOB_DONE) | |
685 | return "MESSAGE_ID=" SD_MESSAGE_UNIT_STARTED_STR; | |
686 | else | |
687 | return "MESSAGE_ID=" SD_MESSAGE_UNIT_FAILED_STR; | |
688 | ||
689 | case JOB_RELOAD: | |
690 | return "MESSAGE_ID=" SD_MESSAGE_UNIT_RELOADED_STR; | |
691 | ||
692 | case JOB_STOP: | |
693 | case JOB_RESTART: | |
694 | return "MESSAGE_ID=" SD_MESSAGE_UNIT_STOPPED_STR; | |
695 | ||
696 | default: | |
697 | return NULL; | |
698 | } | |
33a3fdd9 LP |
699 | } |
700 | ||
04d232d8 | 701 | static void job_emit_done_message(Unit *u, uint32_t job_id, JobType t, JobResult result) { |
b8643ee2 LP |
702 | _cleanup_free_ char *free_ident = NULL; |
703 | const char *ident, *format; | |
33a3fdd9 LP |
704 | |
705 | assert(u); | |
b344b363 LP |
706 | assert(t >= 0); |
707 | assert(t < _JOB_TYPE_MAX); | |
33a3fdd9 | 708 | |
04d232d8 | 709 | if (!unit_log_level_test(u, job_done_messages[result].log_level)) |
33a3fdd9 LP |
710 | return; |
711 | ||
04d232d8 ZJS |
712 | format = job_done_message_format(u, t, result); |
713 | if (!format) | |
c2503e35 RH |
714 | return; |
715 | ||
04d232d8 | 716 | ident = unit_status_string(u, &free_ident); |
33a3fdd9 | 717 | |
04d232d8 ZJS |
718 | const char *status = job_done_messages[result].word; |
719 | bool do_console = t != JOB_RELOAD && status; | |
720 | bool console_only = do_console && log_on_console(); | |
33a3fdd9 | 721 | |
04d232d8 | 722 | if (t == JOB_START && result == JOB_DONE && !u->condition_result) { |
413e8650 | 723 | /* No message on the console if the job did not actually do anything due to unmet condition. */ |
04d232d8 ZJS |
724 | if (console_only) |
725 | return; | |
726 | else | |
727 | do_console = false; | |
728 | } | |
729 | ||
730 | if (!console_only) { /* Skip printing if output goes to the console, and job_print_status_message() | |
731 | * will actually print something to the console. */ | |
6e548561 | 732 | Condition *c; |
04d232d8 | 733 | const char *mid = job_done_mid(t, result); /* mid may be NULL. log_unit_struct() will ignore it. */ |
04d232d8 | 734 | |
6e548561 DDM |
735 | c = t == JOB_START && result == JOB_DONE ? unit_find_failed_condition(u) : NULL; |
736 | if (c) { | |
413e8650 | 737 | /* Special case units that were skipped because of a unmet condition check so that |
6e548561 DDM |
738 | * we can add more information to the message. */ |
739 | if (c->trigger) | |
740 | log_unit_struct( | |
741 | u, | |
742 | job_done_messages[result].log_level, | |
413e8650 | 743 | LOG_MESSAGE("%s was skipped because no trigger condition checks were met.", |
92663a5e | 744 | ident), |
6e548561 DDM |
745 | "JOB_ID=%" PRIu32, job_id, |
746 | "JOB_TYPE=%s", job_type_to_string(t), | |
747 | "JOB_RESULT=%s", job_result_to_string(result), | |
748 | LOG_UNIT_INVOCATION_ID(u), | |
749 | mid); | |
750 | else | |
751 | log_unit_struct( | |
752 | u, | |
753 | job_done_messages[result].log_level, | |
413e8650 | 754 | LOG_MESSAGE("%s was skipped because of an unmet condition check (%s=%s%s).", |
92663a5e ZJS |
755 | ident, |
756 | condition_type_to_string(c->type), | |
757 | c->negate ? "!" : "", | |
758 | c->parameter), | |
6e548561 DDM |
759 | "JOB_ID=%" PRIu32, job_id, |
760 | "JOB_TYPE=%s", job_type_to_string(t), | |
761 | "JOB_RESULT=%s", job_result_to_string(result), | |
762 | LOG_UNIT_INVOCATION_ID(u), | |
763 | mid); | |
764 | } else { | |
765 | const char *msg_fmt = strjoina("MESSAGE=", format); | |
766 | ||
767 | DISABLE_WARNING_FORMAT_NONLITERAL; | |
768 | log_unit_struct(u, job_done_messages[result].log_level, | |
769 | msg_fmt, ident, | |
770 | "JOB_ID=%" PRIu32, job_id, | |
771 | "JOB_TYPE=%s", job_type_to_string(t), | |
772 | "JOB_RESULT=%s", job_result_to_string(result), | |
773 | LOG_UNIT_INVOCATION_ID(u), | |
774 | mid); | |
775 | REENABLE_WARNING; | |
776 | } | |
04d232d8 ZJS |
777 | } |
778 | ||
779 | if (do_console) { | |
780 | if (log_get_show_color()) | |
781 | status = strjoina(job_done_messages[result].color, | |
782 | status, | |
783 | ANSI_NORMAL); | |
784 | ||
785 | DISABLE_WARNING_FORMAT_NONLITERAL; | |
786 | unit_status_printf(u, | |
787 | result == JOB_DONE ? STATUS_TYPE_NORMAL : STATUS_TYPE_NOTICE, | |
788 | status, format, ident); | |
789 | REENABLE_WARNING; | |
790 | ||
791 | if (t == JOB_START && result == JOB_FAILED) { | |
792 | _cleanup_free_ char *quoted = NULL; | |
793 | ||
794 | quoted = shell_maybe_quote(u->id, 0); | |
795 | if (quoted) | |
796 | manager_status_printf(u->manager, STATUS_TYPE_NORMAL, NULL, | |
797 | "See 'systemctl status %s' for details.", quoted); | |
798 | } | |
799 | } | |
33a3fdd9 LP |
800 | } |
801 | ||
d1a34ae9 | 802 | static int job_perform_on_unit(Job **j) { |
48b92b37 | 803 | ActivationDetails *a; |
df446f96 LP |
804 | uint32_t id; |
805 | Manager *m; | |
806 | JobType t; | |
807 | Unit *u; | |
d1a34ae9 MS |
808 | int r; |
809 | ||
df446f96 LP |
810 | /* While we execute this operation the job might go away (for |
811 | * example: because it finishes immediately or is replaced by | |
812 | * a new, conflicting job.) To make sure we don't access a | |
813 | * freed job later on we store the id here, so that we can | |
814 | * verify the job is still valid. */ | |
815 | ||
816 | assert(j); | |
817 | assert(*j); | |
818 | ||
819 | m = (*j)->manager; | |
820 | u = (*j)->unit; | |
821 | t = (*j)->type; | |
822 | id = (*j)->id; | |
48b92b37 | 823 | a = (*j)->activation_details; |
df446f96 | 824 | |
d1a34ae9 MS |
825 | switch (t) { |
826 | case JOB_START: | |
48b92b37 | 827 | r = unit_start(u, a); |
d1a34ae9 MS |
828 | break; |
829 | ||
830 | case JOB_RESTART: | |
831 | t = JOB_STOP; | |
4831981d | 832 | _fallthrough_; |
d1a34ae9 MS |
833 | case JOB_STOP: |
834 | r = unit_stop(u); | |
835 | break; | |
836 | ||
837 | case JOB_RELOAD: | |
838 | r = unit_reload(u); | |
839 | break; | |
840 | ||
841 | default: | |
04499a70 | 842 | assert_not_reached(); |
d1a34ae9 MS |
843 | } |
844 | ||
0e2b4a82 LP |
845 | /* Log if the job still exists and the start/stop/reload function actually did something. Note that this means |
846 | * for units for which there's no 'activating' phase (i.e. because we transition directly from 'inactive' to | |
847 | * 'active') we'll possibly skip the "Starting..." message. */ | |
d1a34ae9 MS |
848 | *j = manager_get_job(m, id); |
849 | if (*j && r > 0) | |
04d232d8 | 850 | job_emit_start_message(u, id, t); |
d1a34ae9 MS |
851 | |
852 | return r; | |
853 | } | |
854 | ||
5cb5a6ff LP |
855 | int job_run_and_invalidate(Job *j) { |
856 | int r; | |
ac1135be | 857 | |
5cb5a6ff | 858 | assert(j); |
ac1135be | 859 | assert(j->installed); |
e0209d83 | 860 | assert(j->type < _JOB_TYPE_MAX_IN_TRANSACTION); |
66aa6f7f | 861 | assert(j->in_run_queue); |
5cb5a6ff | 862 | |
da8e1782 | 863 | prioq_remove(j->manager->run_queue, j, &j->run_queue_idx); |
66aa6f7f | 864 | j->in_run_queue = false; |
5cb5a6ff LP |
865 | |
866 | if (j->state != JOB_WAITING) | |
867 | return 0; | |
868 | ||
034c6ed7 LP |
869 | if (!job_is_runnable(j)) |
870 | return -EAGAIN; | |
871 | ||
a2df3ea4 | 872 | job_start_timer(j, true); |
9c3349e2 | 873 | job_set_state(j, JOB_RUNNING); |
c1e1601e | 874 | job_add_to_dbus_queue(j); |
83c60c9f | 875 | |
5cb5a6ff LP |
876 | switch (j->type) { |
877 | ||
5cb5a6ff | 878 | case JOB_VERIFY_ACTIVE: { |
ea2c0e45 LP |
879 | UnitActiveState t; |
880 | ||
881 | t = unit_active_state(j->unit); | |
87f0e418 | 882 | if (UNIT_IS_ACTIVE_OR_RELOADING(t)) |
5cb5a6ff | 883 | r = -EALREADY; |
87f0e418 | 884 | else if (t == UNIT_ACTIVATING) |
5cb5a6ff LP |
885 | r = -EAGAIN; |
886 | else | |
6a371e23 | 887 | r = -EBADR; |
5cb5a6ff LP |
888 | break; |
889 | } | |
890 | ||
d1a34ae9 | 891 | case JOB_START: |
5cb5a6ff | 892 | case JOB_STOP: |
dd17d388 | 893 | case JOB_RESTART: |
d1a34ae9 | 894 | r = job_perform_on_unit(&j); |
57339f47 | 895 | |
ea2c0e45 | 896 | /* If the unit type does not support starting/stopping, then simply wait. */ |
57339f47 LP |
897 | if (r == -EBADR) |
898 | r = 0; | |
5cb5a6ff LP |
899 | break; |
900 | ||
901 | case JOB_RELOAD: | |
d1a34ae9 | 902 | r = job_perform_on_unit(&j); |
5cb5a6ff LP |
903 | break; |
904 | ||
e0209d83 MS |
905 | case JOB_NOP: |
906 | r = -EALREADY; | |
907 | break; | |
908 | ||
5cb5a6ff | 909 | default: |
04499a70 | 910 | assert_not_reached(); |
5cb5a6ff LP |
911 | } |
912 | ||
e0209d83 | 913 | if (j) { |
8ebd9175 LP |
914 | if (r == -EAGAIN) |
915 | job_set_state(j, JOB_WAITING); /* Hmm, not ready after all, let's return to JOB_WAITING state */ | |
6e64994d | 916 | else if (r == -EALREADY) /* already being executed */ |
833f92ad | 917 | r = job_finish_and_invalidate(j, JOB_DONE, true, true); |
2e3bb01d LB |
918 | else if (r == -ECOMM) |
919 | r = job_finish_and_invalidate(j, JOB_DONE, true, false); | |
6a371e23 | 920 | else if (r == -EBADR) |
833f92ad | 921 | r = job_finish_and_invalidate(j, JOB_SKIPPED, true, false); |
6a371e23 | 922 | else if (r == -ENOEXEC) |
833f92ad | 923 | r = job_finish_and_invalidate(j, JOB_INVALID, true, false); |
59fccdc5 | 924 | else if (r == -EPROTO) |
833f92ad | 925 | r = job_finish_and_invalidate(j, JOB_ASSERT, true, false); |
15411c0c | 926 | else if (r == -EOPNOTSUPP) |
833f92ad | 927 | r = job_finish_and_invalidate(j, JOB_UNSUPPORTED, true, false); |
631b676b LP |
928 | else if (r == -ENOLINK) |
929 | r = job_finish_and_invalidate(j, JOB_DEPENDENCY, true, false); | |
d4fd1cf2 LP |
930 | else if (r == -ESTALE) |
931 | r = job_finish_and_invalidate(j, JOB_ONCE, true, false); | |
9c3349e2 | 932 | else if (r < 0) |
833f92ad | 933 | r = job_finish_and_invalidate(j, JOB_FAILED, true, false); |
2cf19a7a | 934 | } |
5cb5a6ff LP |
935 | |
936 | return r; | |
937 | } | |
938 | ||
15ed3c3a | 939 | static void job_fail_dependencies(Unit *u, UnitDependencyAtom match_atom) { |
be7d9ff7 | 940 | Unit *other; |
be7d9ff7 LP |
941 | |
942 | assert(u); | |
943 | ||
15ed3c3a | 944 | UNIT_FOREACH_DEPENDENCY(other, u, match_atom) { |
be7d9ff7 LP |
945 | Job *j = other->job; |
946 | ||
947 | if (!j) | |
948 | continue; | |
949 | if (!IN_SET(j->type, JOB_START, JOB_VERIFY_ACTIVE)) | |
950 | continue; | |
951 | ||
833f92ad | 952 | job_finish_and_invalidate(j, JOB_DEPENDENCY, true, false); |
be7d9ff7 LP |
953 | } |
954 | } | |
955 | ||
833f92ad | 956 | int job_finish_and_invalidate(Job *j, JobResult result, bool recursive, bool already) { |
15ed3c3a | 957 | Unit *u, *other; |
b866264a | 958 | JobType t; |
5cb5a6ff LP |
959 | |
960 | assert(j); | |
ac1135be | 961 | assert(j->installed); |
e0209d83 | 962 | assert(j->type < _JOB_TYPE_MAX_IN_TRANSACTION); |
5cb5a6ff | 963 | |
c6918296 MS |
964 | u = j->unit; |
965 | t = j->type; | |
966 | ||
967 | j->result = result; | |
968 | ||
771b5242 ZJS |
969 | log_unit_debug(u, "Job %" PRIu32 " %s/%s finished, result=%s", |
970 | j->id, u->id, job_type_to_string(t), job_result_to_string(result)); | |
c6918296 | 971 | |
771b5242 | 972 | /* If this job did nothing to the respective unit we don't log the status message */ |
833f92ad | 973 | if (!already) |
04d232d8 | 974 | job_emit_done_message(u, j->id, t, result); |
c6918296 | 975 | |
034c6ed7 | 976 | /* Patch restart jobs so that they become normal start jobs */ |
c6918296 | 977 | if (result == JOB_DONE && t == JOB_RESTART) { |
f50e0a01 | 978 | |
bbd1a837 | 979 | job_change_type(j, JOB_START); |
9c3349e2 | 980 | job_set_state(j, JOB_WAITING); |
cc42e081 | 981 | |
fec7615c | 982 | job_add_to_dbus_queue(j); |
cc42e081 | 983 | job_add_to_run_queue(j); |
c5a97ed1 | 984 | job_add_to_gc_queue(j); |
57981b98 | 985 | |
57981b98 | 986 | goto finish; |
5cb5a6ff LP |
987 | } |
988 | ||
3742095b | 989 | if (IN_SET(result, JOB_FAILED, JOB_INVALID)) |
313cefa1 | 990 | j->manager->n_failed_jobs++; |
76bf48b7 | 991 | |
97e7d748 | 992 | job_uninstall(j); |
4a53080b | 993 | job_free(j); |
5cb5a6ff LP |
994 | |
995 | /* Fail depending jobs on failure */ | |
5273510e | 996 | if (result != JOB_DONE && recursive) { |
15ed3c3a LP |
997 | if (IN_SET(t, JOB_START, JOB_VERIFY_ACTIVE)) |
998 | job_fail_dependencies(u, UNIT_ATOM_PROPAGATE_START_FAILURE); | |
999 | else if (t == JOB_STOP) | |
1000 | job_fail_dependencies(u, UNIT_ATOM_PROPAGATE_STOP_FAILURE); | |
5cb5a6ff LP |
1001 | } |
1002 | ||
defe63b0 | 1003 | /* A special check to make sure we take down anything RequisiteOf= if we aren't active. This is when |
18fe76eb | 1004 | * the verify-active job merges with a satisfying job type, and then loses its invalidation effect, |
defe63b0 LP |
1005 | * as the result there is JOB_DONE for the start job we merged into, while we should be failing the |
1006 | * depending job if the said unit isn't in fact active. Oneshots are an example of this, where going | |
1007 | * directly from activating to inactive is success. | |
791cd159 | 1008 | * |
defe63b0 LP |
1009 | * This happens when you use ConditionXYZ= in a unit too, since in that case the job completes with |
1010 | * the JOB_DONE result, but the unit never really becomes active. Note that such a case still | |
1011 | * involves merging: | |
791cd159 | 1012 | * |
defe63b0 LP |
1013 | * A start job waits for something else, and a verify-active comes in and merges in the installed |
1014 | * job. Then, later, when it becomes runnable, it finishes with JOB_DONE result as execution on | |
1015 | * conditions not being met is skipped, breaking our dependency semantics. | |
791cd159 | 1016 | * |
defe63b0 LP |
1017 | * Also, depending on if start job waits or not, the merging may or may not happen (the verify-active |
1018 | * job may trigger after it finishes), so you get undeterministic results without this check. | |
791cd159 | 1019 | */ |
15ed3c3a LP |
1020 | if (result == JOB_DONE && recursive && |
1021 | IN_SET(t, JOB_START, JOB_RELOAD) && | |
1022 | !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) | |
1023 | job_fail_dependencies(u, UNIT_ATOM_PROPAGATE_INACTIVE_START_AS_FAILURE); | |
1024 | ||
1025 | /* Trigger OnFailure= dependencies that are not generated by the unit itself. We don't treat | |
1026 | * JOB_CANCELED as failure in this context. And JOB_FAILURE is already handled by the unit itself. */ | |
646cc98d | 1027 | if (IN_SET(result, JOB_TIMEOUT, JOB_DEPENDENCY)) { |
c2503e35 RH |
1028 | log_unit_struct(u, LOG_NOTICE, |
1029 | "JOB_TYPE=%s", job_type_to_string(t), | |
1030 | "JOB_RESULT=%s", job_result_to_string(result), | |
1031 | LOG_UNIT_MESSAGE(u, "Job %s/%s failed with result '%s'.", | |
1032 | u->id, | |
1033 | job_type_to_string(t), | |
1034 | job_result_to_string(result))); | |
222ae6a8 | 1035 | |
294446dc | 1036 | unit_start_on_failure(u, "OnFailure=", UNIT_ATOM_ON_FAILURE, u->on_failure_job_mode); |
222ae6a8 | 1037 | } |
c0daa706 | 1038 | |
3ecaa09b LP |
1039 | unit_trigger_notify(u); |
1040 | ||
57981b98 | 1041 | finish: |
5cb5a6ff | 1042 | /* Try to start the next jobs that can be started */ |
15ed3c3a | 1043 | UNIT_FOREACH_DEPENDENCY(other, u, UNIT_ATOM_AFTER) |
c5a97ed1 | 1044 | if (other->job) { |
ac155bb8 | 1045 | job_add_to_run_queue(other->job); |
c5a97ed1 LP |
1046 | job_add_to_gc_queue(other->job); |
1047 | } | |
15ed3c3a | 1048 | UNIT_FOREACH_DEPENDENCY(other, u, UNIT_ATOM_BEFORE) |
c5a97ed1 | 1049 | if (other->job) { |
ac155bb8 | 1050 | job_add_to_run_queue(other->job); |
c5a97ed1 LP |
1051 | job_add_to_gc_queue(other->job); |
1052 | } | |
5cb5a6ff | 1053 | |
ac155bb8 | 1054 | manager_check_finished(u->manager); |
b0c918b9 | 1055 | |
5273510e | 1056 | return 0; |
5cb5a6ff | 1057 | } |
034c6ed7 | 1058 | |
718db961 | 1059 | static int job_dispatch_timer(sd_event_source *s, uint64_t monotonic, void *userdata) { |
99534007 | 1060 | Job *j = ASSERT_PTR(userdata); |
f189ab18 | 1061 | Unit *u; |
faf919f1 | 1062 | |
718db961 | 1063 | assert(s == j->timer_event_source); |
faf919f1 | 1064 | |
f2341e0a | 1065 | log_unit_warning(j->unit, "Job %s/%s timed out.", j->unit->id, job_type_to_string(j->type)); |
faf919f1 | 1066 | |
f189ab18 | 1067 | u = j->unit; |
833f92ad | 1068 | job_finish_and_invalidate(j, JOB_TIMEOUT, true, false); |
f189ab18 | 1069 | |
c7adcb1a ZJS |
1070 | emergency_action(u->manager, u->job_timeout_action, |
1071 | EMERGENCY_ACTION_IS_WATCHDOG|EMERGENCY_ACTION_WARN, | |
7af67e9a | 1072 | u->job_timeout_reboot_arg, -1, "job timed out"); |
f189ab18 | 1073 | |
718db961 LP |
1074 | return 0; |
1075 | } | |
faf919f1 | 1076 | |
a2df3ea4 | 1077 | int job_start_timer(Job *j, bool job_running) { |
718db961 | 1078 | int r; |
171f12ce | 1079 | usec_t timeout_time, old_timeout_time; |
faf919f1 | 1080 | |
a2df3ea4 | 1081 | if (job_running) { |
171f12ce MK |
1082 | j->begin_running_usec = now(CLOCK_MONOTONIC); |
1083 | ||
a2df3ea4 MK |
1084 | if (j->unit->job_running_timeout == USEC_INFINITY) |
1085 | return 0; | |
faf919f1 | 1086 | |
171f12ce | 1087 | timeout_time = usec_add(j->begin_running_usec, j->unit->job_running_timeout); |
faf919f1 | 1088 | |
a2df3ea4 MK |
1089 | if (j->timer_event_source) { |
1090 | /* Update only if JobRunningTimeoutSec= results in earlier timeout */ | |
1091 | r = sd_event_source_get_time(j->timer_event_source, &old_timeout_time); | |
1092 | if (r < 0) | |
1093 | return r; | |
1094 | ||
1095 | if (old_timeout_time <= timeout_time) | |
1096 | return 0; | |
1097 | ||
1098 | return sd_event_source_set_time(j->timer_event_source, timeout_time); | |
1099 | } | |
1100 | } else { | |
1101 | if (j->timer_event_source) | |
1102 | return 0; | |
1103 | ||
1104 | j->begin_usec = now(CLOCK_MONOTONIC); | |
1105 | ||
1106 | if (j->unit->job_timeout == USEC_INFINITY) | |
1107 | return 0; | |
1108 | ||
1109 | timeout_time = usec_add(j->begin_usec, j->unit->job_timeout); | |
1110 | } | |
8bb310c3 | 1111 | |
6a0f1f6d LP |
1112 | r = sd_event_add_time( |
1113 | j->manager->event, | |
1114 | &j->timer_event_source, | |
1115 | CLOCK_MONOTONIC, | |
a2df3ea4 | 1116 | timeout_time, 0, |
6a0f1f6d | 1117 | job_dispatch_timer, j); |
718db961 LP |
1118 | if (r < 0) |
1119 | return r; | |
faf919f1 | 1120 | |
7dfbe2e3 TG |
1121 | (void) sd_event_source_set_description(j->timer_event_source, "job-start"); |
1122 | ||
718db961 | 1123 | return 0; |
faf919f1 LP |
1124 | } |
1125 | ||
c1e1601e | 1126 | void job_add_to_run_queue(Job *j) { |
f8c34706 LP |
1127 | int r; |
1128 | ||
034c6ed7 | 1129 | assert(j); |
ac1135be | 1130 | assert(j->installed); |
034c6ed7 LP |
1131 | |
1132 | if (j->in_run_queue) | |
1133 | return; | |
1134 | ||
735a8b6d LP |
1135 | r = prioq_put(j->manager->run_queue, j, &j->run_queue_idx); |
1136 | if (r < 0) | |
1137 | log_warning_errno(r, "Failed put job in run queue, ignoring: %m"); | |
1138 | else | |
1139 | j->in_run_queue = true; | |
b0c4b282 LP |
1140 | |
1141 | manager_trigger_run_queue(j->manager); | |
034c6ed7 | 1142 | } |
94f04347 | 1143 | |
c1e1601e LP |
1144 | void job_add_to_dbus_queue(Job *j) { |
1145 | assert(j); | |
1146 | assert(j->installed); | |
1147 | ||
1148 | if (j->in_dbus_queue) | |
1149 | return; | |
1150 | ||
a567261a LP |
1151 | /* We don't check if anybody is subscribed here, since this |
1152 | * job might just have been created and not yet assigned to a | |
1153 | * connection/client. */ | |
94b6dfa2 | 1154 | |
71fda00f | 1155 | LIST_PREPEND(dbus_queue, j->manager->dbus_job_queue, j); |
c1e1601e LP |
1156 | j->in_dbus_queue = true; |
1157 | } | |
1158 | ||
ea430986 LP |
1159 | char *job_dbus_path(Job *j) { |
1160 | char *p; | |
1161 | ||
1162 | assert(j); | |
1163 | ||
ccd06097 | 1164 | if (asprintf(&p, "/org/freedesktop/systemd1/job/%"PRIu32, j->id) < 0) |
ea430986 LP |
1165 | return NULL; |
1166 | ||
1167 | return p; | |
1168 | } | |
1169 | ||
05a98afd LP |
1170 | int job_serialize(Job *j, FILE *f) { |
1171 | assert(j); | |
1172 | assert(f); | |
1173 | ||
d68c645b LP |
1174 | (void) serialize_item_format(f, "job-id", "%u", j->id); |
1175 | (void) serialize_item(f, "job-type", job_type_to_string(j->type)); | |
1176 | (void) serialize_item(f, "job-state", job_state_to_string(j->state)); | |
1177 | (void) serialize_bool(f, "job-irreversible", j->irreversible); | |
1178 | (void) serialize_bool(f, "job-sent-dbus-new-signal", j->sent_dbus_new_signal); | |
1179 | (void) serialize_bool(f, "job-ignore-order", j->ignore_order); | |
718db961 LP |
1180 | |
1181 | if (j->begin_usec > 0) | |
d68c645b | 1182 | (void) serialize_usec(f, "job-begin", j->begin_usec); |
171f12ce | 1183 | if (j->begin_running_usec > 0) |
d68c645b | 1184 | (void) serialize_usec(f, "job-begin-running", j->begin_running_usec); |
718db961 | 1185 | |
1a465207 | 1186 | bus_track_serialize(j->bus_track, f, "subscribed"); |
39a18c60 | 1187 | |
48b92b37 LB |
1188 | activation_details_serialize(j->activation_details, f); |
1189 | ||
39a18c60 MS |
1190 | /* End marker */ |
1191 | fputc('\n', f); | |
1192 | return 0; | |
1193 | } | |
1194 | ||
05a98afd | 1195 | int job_deserialize(Job *j, FILE *f) { |
8948b341 LP |
1196 | int r; |
1197 | ||
718db961 | 1198 | assert(j); |
05a98afd | 1199 | assert(f); |
718db961 | 1200 | |
39a18c60 | 1201 | for (;;) { |
8948b341 LP |
1202 | _cleanup_free_ char *line = NULL; |
1203 | char *l, *v; | |
39a18c60 MS |
1204 | size_t k; |
1205 | ||
8948b341 LP |
1206 | r = read_line(f, LONG_LINE_MAX, &line); |
1207 | if (r < 0) | |
1208 | return log_error_errno(r, "Failed to read serialization line: %m"); | |
1209 | if (r == 0) | |
1210 | return 0; | |
39a18c60 | 1211 | |
39a18c60 MS |
1212 | l = strstrip(line); |
1213 | ||
1214 | /* End marker */ | |
8948b341 | 1215 | if (isempty(l)) |
39a18c60 MS |
1216 | return 0; |
1217 | ||
1218 | k = strcspn(l, "="); | |
1219 | ||
1220 | if (l[k] == '=') { | |
1221 | l[k] = 0; | |
1222 | v = l+k+1; | |
1223 | } else | |
1224 | v = l+k; | |
1225 | ||
1226 | if (streq(l, "job-id")) { | |
718db961 | 1227 | |
39a18c60 | 1228 | if (safe_atou32(v, &j->id) < 0) |
15ec1021 | 1229 | log_debug("Failed to parse job id value: %s", v); |
718db961 | 1230 | |
39a18c60 | 1231 | } else if (streq(l, "job-type")) { |
718db961 LP |
1232 | JobType t; |
1233 | ||
1234 | t = job_type_from_string(v); | |
39a18c60 | 1235 | if (t < 0) |
15ec1021 | 1236 | log_debug("Failed to parse job type: %s", v); |
e0209d83 | 1237 | else if (t >= _JOB_TYPE_MAX_IN_TRANSACTION) |
15ec1021 | 1238 | log_debug("Cannot deserialize job of type: %s", v); |
39a18c60 MS |
1239 | else |
1240 | j->type = t; | |
718db961 | 1241 | |
39a18c60 | 1242 | } else if (streq(l, "job-state")) { |
718db961 LP |
1243 | JobState s; |
1244 | ||
1245 | s = job_state_from_string(v); | |
39a18c60 | 1246 | if (s < 0) |
15ec1021 | 1247 | log_debug("Failed to parse job state: %s", v); |
39a18c60 | 1248 | else |
9c3349e2 | 1249 | job_set_state(j, s); |
718db961 | 1250 | |
23ade460 | 1251 | } else if (streq(l, "job-irreversible")) { |
718db961 LP |
1252 | int b; |
1253 | ||
1254 | b = parse_boolean(v); | |
23ade460 | 1255 | if (b < 0) |
15ec1021 | 1256 | log_debug("Failed to parse job irreversible flag: %s", v); |
23ade460 MS |
1257 | else |
1258 | j->irreversible = j->irreversible || b; | |
718db961 | 1259 | |
39a18c60 | 1260 | } else if (streq(l, "job-sent-dbus-new-signal")) { |
718db961 LP |
1261 | int b; |
1262 | ||
1263 | b = parse_boolean(v); | |
39a18c60 | 1264 | if (b < 0) |
15ec1021 | 1265 | log_debug("Failed to parse job sent_dbus_new_signal flag: %s", v); |
39a18c60 MS |
1266 | else |
1267 | j->sent_dbus_new_signal = j->sent_dbus_new_signal || b; | |
718db961 | 1268 | |
39a18c60 | 1269 | } else if (streq(l, "job-ignore-order")) { |
718db961 LP |
1270 | int b; |
1271 | ||
1272 | b = parse_boolean(v); | |
39a18c60 | 1273 | if (b < 0) |
15ec1021 | 1274 | log_debug("Failed to parse job ignore_order flag: %s", v); |
39a18c60 MS |
1275 | else |
1276 | j->ignore_order = j->ignore_order || b; | |
718db961 | 1277 | |
d68c645b LP |
1278 | } else if (streq(l, "job-begin")) |
1279 | (void) deserialize_usec(v, &j->begin_usec); | |
718db961 | 1280 | |
d68c645b LP |
1281 | else if (streq(l, "job-begin-running")) |
1282 | (void) deserialize_usec(v, &j->begin_running_usec); | |
718db961 | 1283 | |
d68c645b | 1284 | else if (streq(l, "subscribed")) { |
b39a2770 | 1285 | if (strv_extend(&j->deserialized_clients, v) < 0) |
d68c645b | 1286 | return log_oom(); |
48b92b37 LB |
1287 | |
1288 | } else if (startswith(l, "activation-details")) { | |
1289 | if (activation_details_deserialize(l, v, &j->activation_details) < 0) | |
1290 | log_debug("Failed to parse job ActivationDetails element: %s", v); | |
1291 | ||
d68c645b LP |
1292 | } else |
1293 | log_debug("Unknown job serialization key: %s", l); | |
39a18c60 MS |
1294 | } |
1295 | } | |
1296 | ||
1297 | int job_coldplug(Job *j) { | |
718db961 | 1298 | int r; |
171f12ce | 1299 | usec_t timeout_time = USEC_INFINITY; |
718db961 LP |
1300 | |
1301 | assert(j); | |
39a18c60 | 1302 | |
8f8f05a9 LP |
1303 | /* After deserialization is complete and the bus connection |
1304 | * set up again, let's start watching our subscribers again */ | |
c5a97ed1 | 1305 | (void) bus_job_coldplug_bus_track(j); |
8f8f05a9 | 1306 | |
1727a595 MM |
1307 | if (j->state == JOB_WAITING) |
1308 | job_add_to_run_queue(j); | |
1309 | ||
c5a97ed1 LP |
1310 | /* Maybe due to new dependencies we don't actually need this job anymore? */ |
1311 | job_add_to_gc_queue(j); | |
1312 | ||
171f12ce MK |
1313 | /* Create timer only when job began or began running and the respective timeout is finite. |
1314 | * Follow logic of job_start_timer() if both timeouts are finite */ | |
1315 | if (j->begin_usec == 0) | |
1316 | return 0; | |
1317 | ||
1318 | if (j->unit->job_timeout != USEC_INFINITY) | |
1319 | timeout_time = usec_add(j->begin_usec, j->unit->job_timeout); | |
1320 | ||
1f65fd49 | 1321 | if (timestamp_is_set(j->begin_running_usec)) |
171f12ce MK |
1322 | timeout_time = MIN(timeout_time, usec_add(j->begin_running_usec, j->unit->job_running_timeout)); |
1323 | ||
1324 | if (timeout_time == USEC_INFINITY) | |
39a18c60 MS |
1325 | return 0; |
1326 | ||
5dcadb4c | 1327 | j->timer_event_source = sd_event_source_disable_unref(j->timer_event_source); |
39a18c60 | 1328 | |
6a0f1f6d LP |
1329 | r = sd_event_add_time( |
1330 | j->manager->event, | |
1331 | &j->timer_event_source, | |
1332 | CLOCK_MONOTONIC, | |
171f12ce | 1333 | timeout_time, 0, |
6a0f1f6d | 1334 | job_dispatch_timer, j); |
718db961 | 1335 | if (r < 0) |
da927ba9 | 1336 | log_debug_errno(r, "Failed to restart timeout for job: %m"); |
718db961 | 1337 | |
7dfbe2e3 TG |
1338 | (void) sd_event_source_set_description(j->timer_event_source, "job-timeout"); |
1339 | ||
718db961 | 1340 | return r; |
39a18c60 MS |
1341 | } |
1342 | ||
c65eb836 LP |
1343 | void job_shutdown_magic(Job *j) { |
1344 | assert(j); | |
1345 | ||
1346 | /* The shutdown target gets some special treatment here: we | |
1347 | * tell the kernel to begin with flushing its disk caches, to | |
1348 | * optimize shutdown time a bit. Ideally we wouldn't hardcode | |
1349 | * this magic into PID 1. However all other processes aren't | |
1350 | * options either since they'd exit much sooner than PID 1 and | |
1351 | * asynchronous sync() would cause their exit to be | |
1352 | * delayed. */ | |
1353 | ||
c2756a68 | 1354 | if (j->type != JOB_START) |
c65eb836 LP |
1355 | return; |
1356 | ||
463d0d15 | 1357 | if (!MANAGER_IS_SYSTEM(j->unit->manager)) |
c2756a68 LP |
1358 | return; |
1359 | ||
1360 | if (!unit_has_name(j->unit, SPECIAL_SHUTDOWN_TARGET)) | |
c65eb836 LP |
1361 | return; |
1362 | ||
5b1869ea OB |
1363 | /* In case messages on console has been disabled on boot */ |
1364 | j->unit->manager->no_console_output = false; | |
1365 | ||
9dfb6a3a PM |
1366 | manager_invalidate_startup_units(j->unit->manager); |
1367 | ||
75f86906 | 1368 | if (detect_container() > 0) |
c65eb836 LP |
1369 | return; |
1370 | ||
d00c2631 | 1371 | (void) asynchronous_sync(NULL); |
c65eb836 LP |
1372 | } |
1373 | ||
7a7821c8 LP |
1374 | int job_get_timeout(Job *j, usec_t *timeout) { |
1375 | usec_t x = USEC_INFINITY, y = USEC_INFINITY; | |
fbd747a4 | 1376 | Unit *u = ASSERT_PTR(ASSERT_PTR(j)->unit); |
7a7821c8 | 1377 | int r; |
68db7a3b | 1378 | |
68db7a3b ZJS |
1379 | if (j->timer_event_source) { |
1380 | r = sd_event_source_get_time(j->timer_event_source, &x); | |
1381 | if (r < 0) | |
1382 | return r; | |
68db7a3b ZJS |
1383 | } |
1384 | ||
1385 | if (UNIT_VTABLE(u)->get_timeout) { | |
7a7821c8 LP |
1386 | r = UNIT_VTABLE(u)->get_timeout(u, &y); |
1387 | if (r < 0) | |
1388 | return r; | |
68db7a3b ZJS |
1389 | } |
1390 | ||
7a7821c8 | 1391 | if (x == USEC_INFINITY && y == USEC_INFINITY) |
68db7a3b ZJS |
1392 | return 0; |
1393 | ||
1394 | *timeout = MIN(x, y); | |
68db7a3b ZJS |
1395 | return 1; |
1396 | } | |
1397 | ||
2ab3050f | 1398 | bool job_may_gc(Job *j) { |
c5a97ed1 | 1399 | Unit *other; |
c5a97ed1 LP |
1400 | |
1401 | assert(j); | |
1402 | ||
1403 | /* Checks whether this job should be GC'ed away. We only do this for jobs of units that have no effect on their | |
2ab3050f ZJS |
1404 | * own and just track external state. For now the only unit type that qualifies for this are .device units. |
1405 | * Returns true if the job can be collected. */ | |
c5a97ed1 LP |
1406 | |
1407 | if (!UNIT_VTABLE(j->unit)->gc_jobs) | |
2ab3050f | 1408 | return false; |
c5a97ed1 LP |
1409 | |
1410 | if (sd_bus_track_count(j->bus_track) > 0) | |
2ab3050f | 1411 | return false; |
c5a97ed1 LP |
1412 | |
1413 | /* FIXME: So this is a bit ugly: for now we don't properly track references made via private bus connections | |
1414 | * (because it's nasty, as sd_bus_track doesn't apply to it). We simply remember that the job was once | |
1415 | * referenced by one, and reset this whenever we notice that no private bus connections are around. This means | |
1416 | * the GC is a bit too conservative when it comes to jobs created by private bus connections. */ | |
1417 | if (j->ref_by_private_bus) { | |
1418 | if (set_isempty(j->unit->manager->private_buses)) | |
1419 | j->ref_by_private_bus = false; | |
1420 | else | |
2ab3050f | 1421 | return false; |
c5a97ed1 LP |
1422 | } |
1423 | ||
1424 | if (j->type == JOB_NOP) | |
2ab3050f | 1425 | return false; |
c5a97ed1 | 1426 | |
e602f152 | 1427 | /* The logic is inverse to job_is_runnable, we cannot GC as long as we block any job. */ |
15ed3c3a LP |
1428 | UNIT_FOREACH_DEPENDENCY(other, j->unit, UNIT_ATOM_BEFORE) |
1429 | if (other->job && job_compare(j, other->job, UNIT_ATOM_BEFORE) < 0) | |
2ab3050f | 1430 | return false; |
c5a97ed1 | 1431 | |
15ed3c3a LP |
1432 | UNIT_FOREACH_DEPENDENCY(other, j->unit, UNIT_ATOM_AFTER) |
1433 | if (other->job && job_compare(j, other->job, UNIT_ATOM_AFTER) < 0) | |
2ab3050f | 1434 | return false; |
c5a97ed1 | 1435 | |
2ab3050f | 1436 | return true; |
c5a97ed1 LP |
1437 | } |
1438 | ||
1439 | void job_add_to_gc_queue(Job *j) { | |
1440 | assert(j); | |
1441 | ||
1442 | if (j->in_gc_queue) | |
1443 | return; | |
1444 | ||
2ab3050f | 1445 | if (!job_may_gc(j)) |
c5a97ed1 LP |
1446 | return; |
1447 | ||
1448 | LIST_PREPEND(gc_queue, j->unit->manager->gc_job_queue, j); | |
1449 | j->in_gc_queue = true; | |
1450 | } | |
1451 | ||
e602f152 | 1452 | static int job_compare_id(Job * const *a, Job * const *b) { |
93bab288 | 1453 | return CMP((*a)->id, (*b)->id); |
15ea79f8 LP |
1454 | } |
1455 | ||
1456 | static size_t sort_job_list(Job **list, size_t n) { | |
1457 | Job *previous = NULL; | |
1458 | size_t a, b; | |
1459 | ||
1460 | /* Order by numeric IDs */ | |
e602f152 | 1461 | typesafe_qsort(list, n, job_compare_id); |
15ea79f8 LP |
1462 | |
1463 | /* Filter out duplicates */ | |
1464 | for (a = 0, b = 0; a < n; a++) { | |
1465 | ||
1466 | if (previous == list[a]) | |
1467 | continue; | |
1468 | ||
1469 | previous = list[b++] = list[a]; | |
1470 | } | |
1471 | ||
1472 | return b; | |
1473 | } | |
1474 | ||
1475 | int job_get_before(Job *j, Job*** ret) { | |
1476 | _cleanup_free_ Job** list = NULL; | |
15ea79f8 | 1477 | Unit *other = NULL; |
319a4f4b | 1478 | size_t n = 0; |
15ea79f8 LP |
1479 | |
1480 | /* Returns a list of all pending jobs that need to finish before this job may be started. */ | |
1481 | ||
1482 | assert(j); | |
1483 | assert(ret); | |
1484 | ||
1485 | if (j->ignore_order) { | |
1486 | *ret = NULL; | |
1487 | return 0; | |
1488 | } | |
1489 | ||
15ed3c3a | 1490 | UNIT_FOREACH_DEPENDENCY(other, j->unit, UNIT_ATOM_AFTER) { |
e602f152 MK |
1491 | if (!other->job) |
1492 | continue; | |
15ed3c3a | 1493 | if (job_compare(j, other->job, UNIT_ATOM_AFTER) <= 0) |
e602f152 | 1494 | continue; |
15ea79f8 | 1495 | |
319a4f4b | 1496 | if (!GREEDY_REALLOC(list, n+1)) |
e602f152 MK |
1497 | return -ENOMEM; |
1498 | list[n++] = other->job; | |
15ea79f8 LP |
1499 | } |
1500 | ||
15ed3c3a | 1501 | UNIT_FOREACH_DEPENDENCY(other, j->unit, UNIT_ATOM_BEFORE) { |
15ea79f8 LP |
1502 | if (!other->job) |
1503 | continue; | |
15ed3c3a | 1504 | if (job_compare(j, other->job, UNIT_ATOM_BEFORE) <= 0) |
15ea79f8 LP |
1505 | continue; |
1506 | ||
319a4f4b | 1507 | if (!GREEDY_REALLOC(list, n+1)) |
15ea79f8 LP |
1508 | return -ENOMEM; |
1509 | list[n++] = other->job; | |
1510 | } | |
1511 | ||
1512 | n = sort_job_list(list, n); | |
1513 | ||
1cc6c93a | 1514 | *ret = TAKE_PTR(list); |
15ea79f8 LP |
1515 | |
1516 | return (int) n; | |
1517 | } | |
1518 | ||
1519 | int job_get_after(Job *j, Job*** ret) { | |
1520 | _cleanup_free_ Job** list = NULL; | |
15ea79f8 | 1521 | Unit *other = NULL; |
319a4f4b | 1522 | size_t n = 0; |
15ea79f8 LP |
1523 | |
1524 | assert(j); | |
1525 | assert(ret); | |
1526 | ||
1527 | /* Returns a list of all pending jobs that are waiting for this job to finish. */ | |
1528 | ||
15ed3c3a | 1529 | UNIT_FOREACH_DEPENDENCY(other, j->unit, UNIT_ATOM_BEFORE) { |
15ea79f8 LP |
1530 | if (!other->job) |
1531 | continue; | |
1532 | ||
1533 | if (other->job->ignore_order) | |
1534 | continue; | |
1535 | ||
15ed3c3a | 1536 | if (job_compare(j, other->job, UNIT_ATOM_BEFORE) >= 0) |
15ea79f8 LP |
1537 | continue; |
1538 | ||
319a4f4b | 1539 | if (!GREEDY_REALLOC(list, n+1)) |
15ea79f8 LP |
1540 | return -ENOMEM; |
1541 | list[n++] = other->job; | |
1542 | } | |
1543 | ||
15ed3c3a | 1544 | UNIT_FOREACH_DEPENDENCY(other, j->unit, UNIT_ATOM_AFTER) { |
e602f152 MK |
1545 | if (!other->job) |
1546 | continue; | |
1547 | ||
1548 | if (other->job->ignore_order) | |
1549 | continue; | |
15ea79f8 | 1550 | |
15ed3c3a | 1551 | if (job_compare(j, other->job, UNIT_ATOM_AFTER) >= 0) |
e602f152 | 1552 | continue; |
15ea79f8 | 1553 | |
319a4f4b | 1554 | if (!GREEDY_REALLOC(list, n+1)) |
e602f152 MK |
1555 | return -ENOMEM; |
1556 | list[n++] = other->job; | |
15ea79f8 LP |
1557 | } |
1558 | ||
1559 | n = sort_job_list(list, n); | |
1560 | ||
1cc6c93a | 1561 | *ret = TAKE_PTR(list); |
15ea79f8 LP |
1562 | |
1563 | return (int) n; | |
1564 | } | |
1565 | ||
94f04347 LP |
1566 | static const char* const job_state_table[_JOB_STATE_MAX] = { |
1567 | [JOB_WAITING] = "waiting", | |
0a23a627 | 1568 | [JOB_RUNNING] = "running", |
94f04347 LP |
1569 | }; |
1570 | ||
1571 | DEFINE_STRING_TABLE_LOOKUP(job_state, JobState); | |
1572 | ||
1573 | static const char* const job_type_table[_JOB_TYPE_MAX] = { | |
48d83e33 ZJS |
1574 | [JOB_START] = "start", |
1575 | [JOB_VERIFY_ACTIVE] = "verify-active", | |
1576 | [JOB_STOP] = "stop", | |
1577 | [JOB_RELOAD] = "reload", | |
94f04347 | 1578 | [JOB_RELOAD_OR_START] = "reload-or-start", |
48d83e33 ZJS |
1579 | [JOB_RESTART] = "restart", |
1580 | [JOB_TRY_RESTART] = "try-restart", | |
1581 | [JOB_TRY_RELOAD] = "try-reload", | |
1582 | [JOB_NOP] = "nop", | |
94f04347 LP |
1583 | }; |
1584 | ||
1585 | DEFINE_STRING_TABLE_LOOKUP(job_type, JobType); | |
b548631a LP |
1586 | |
1587 | static const char* const job_mode_table[_JOB_MODE_MAX] = { | |
48d83e33 ZJS |
1588 | [JOB_FAIL] = "fail", |
1589 | [JOB_REPLACE] = "replace", | |
23ade460 | 1590 | [JOB_REPLACE_IRREVERSIBLY] = "replace-irreversibly", |
48d83e33 ZJS |
1591 | [JOB_ISOLATE] = "isolate", |
1592 | [JOB_FLUSH] = "flush", | |
1593 | [JOB_IGNORE_DEPENDENCIES] = "ignore-dependencies", | |
1594 | [JOB_IGNORE_REQUIREMENTS] = "ignore-requirements", | |
1595 | [JOB_TRIGGERING] = "triggering", | |
b548631a LP |
1596 | }; |
1597 | ||
1598 | DEFINE_STRING_TABLE_LOOKUP(job_mode, JobMode); | |
5d44db4a LP |
1599 | |
1600 | static const char* const job_result_table[_JOB_RESULT_MAX] = { | |
48d83e33 ZJS |
1601 | [JOB_DONE] = "done", |
1602 | [JOB_CANCELED] = "canceled", | |
1603 | [JOB_TIMEOUT] = "timeout", | |
1604 | [JOB_FAILED] = "failed", | |
1605 | [JOB_DEPENDENCY] = "dependency", | |
1606 | [JOB_SKIPPED] = "skipped", | |
1607 | [JOB_INVALID] = "invalid", | |
1608 | [JOB_ASSERT] = "assert", | |
0faacd47 | 1609 | [JOB_UNSUPPORTED] = "unsupported", |
48d83e33 ZJS |
1610 | [JOB_COLLECTED] = "collected", |
1611 | [JOB_ONCE] = "once", | |
5d44db4a LP |
1612 | }; |
1613 | ||
1614 | DEFINE_STRING_TABLE_LOOKUP(job_result, JobResult); | |
94bd7323 EV |
1615 | |
1616 | const char* job_type_to_access_method(JobType t) { | |
1617 | assert(t >= 0); | |
1618 | assert(t < _JOB_TYPE_MAX); | |
1619 | ||
1620 | if (IN_SET(t, JOB_START, JOB_RESTART, JOB_TRY_RESTART)) | |
1621 | return "start"; | |
1622 | else if (t == JOB_STOP) | |
1623 | return "stop"; | |
1624 | else | |
1625 | return "reload"; | |
1626 | } | |
e602f152 MK |
1627 | |
1628 | /* | |
1629 | * assume_dep assumed dependency between units (a is before/after b) | |
1630 | * | |
1631 | * Returns | |
1632 | * 0 jobs are independent, | |
1633 | * >0 a should run after b, | |
1634 | * <0 a should run before b, | |
1635 | * | |
1636 | * The logic means that for a service a and a service b where b.After=a: | |
1637 | * | |
1638 | * start a + start b → 1st step start a, 2nd step start b | |
1639 | * start a + stop b → 1st step stop b, 2nd step start a | |
1640 | * stop a + start b → 1st step stop a, 2nd step start b | |
1641 | * stop a + stop b → 1st step stop b, 2nd step stop a | |
1642 | * | |
defe63b0 | 1643 | * This has the side effect that restarts are properly synchronized too. |
e602f152 | 1644 | */ |
15ed3c3a LP |
1645 | int job_compare(Job *a, Job *b, UnitDependencyAtom assume_dep) { |
1646 | assert(a); | |
1647 | assert(b); | |
e602f152 MK |
1648 | assert(a->type < _JOB_TYPE_MAX_IN_TRANSACTION); |
1649 | assert(b->type < _JOB_TYPE_MAX_IN_TRANSACTION); | |
15ed3c3a | 1650 | assert(IN_SET(assume_dep, UNIT_ATOM_AFTER, UNIT_ATOM_BEFORE)); |
e602f152 MK |
1651 | |
1652 | /* Trivial cases first */ | |
1653 | if (a->type == JOB_NOP || b->type == JOB_NOP) | |
1654 | return 0; | |
1655 | ||
1656 | if (a->ignore_order || b->ignore_order) | |
1657 | return 0; | |
1658 | ||
15ed3c3a LP |
1659 | if (assume_dep == UNIT_ATOM_AFTER) |
1660 | return -job_compare(b, a, UNIT_ATOM_BEFORE); | |
e602f152 | 1661 | |
defe63b0 LP |
1662 | /* Let's make it simple, JOB_STOP goes always first (in case both ua and ub stop, then ub's stop goes |
1663 | * first anyway). JOB_RESTART is JOB_STOP in disguise (before it is patched to JOB_START). */ | |
e602f152 MK |
1664 | if (IN_SET(b->type, JOB_STOP, JOB_RESTART)) |
1665 | return 1; | |
1666 | else | |
1667 | return -1; | |
1668 | } | |
48b92b37 LB |
1669 | |
1670 | void job_set_activation_details(Job *j, ActivationDetails *info) { | |
1671 | /* Existing (older) ActivationDetails win, newer ones are discarded. */ | |
1672 | if (!j || j->activation_details || !info) | |
1673 | return; /* Nothing to do. */ | |
1674 | ||
1675 | j->activation_details = activation_details_ref(info); | |
1676 | } |