]>
Commit | Line | Data |
---|---|---|
d6c9574f | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
87f0e418 | 2 | |
a7334b09 LP |
3 | /*** |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
87f0e418 LP |
22 | #include <assert.h> |
23 | #include <errno.h> | |
24 | #include <string.h> | |
25 | #include <sys/epoll.h> | |
26 | #include <sys/timerfd.h> | |
27 | #include <sys/poll.h> | |
0301abf4 LP |
28 | #include <stdlib.h> |
29 | #include <unistd.h> | |
45fb0699 | 30 | #include <sys/stat.h> |
87f0e418 LP |
31 | |
32 | #include "set.h" | |
33 | #include "unit.h" | |
34 | #include "macro.h" | |
35 | #include "strv.h" | |
36 | #include "load-fragment.h" | |
37 | #include "load-dropin.h" | |
38 | #include "log.h" | |
9e2f7c11 LP |
39 | #include "unit-name.h" |
40 | #include "specifier.h" | |
4139c1b2 | 41 | #include "dbus-unit.h" |
514f4ef5 | 42 | #include "special.h" |
c6c18be3 | 43 | #include "cgroup-util.h" |
4927fcae | 44 | #include "missing.h" |
87f0e418 LP |
45 | |
46 | const UnitVTable * const unit_vtable[_UNIT_TYPE_MAX] = { | |
47 | [UNIT_SERVICE] = &service_vtable, | |
48 | [UNIT_TIMER] = &timer_vtable, | |
49 | [UNIT_SOCKET] = &socket_vtable, | |
50 | [UNIT_TARGET] = &target_vtable, | |
51 | [UNIT_DEVICE] = &device_vtable, | |
52 | [UNIT_MOUNT] = &mount_vtable, | |
53 | [UNIT_AUTOMOUNT] = &automount_vtable, | |
07b0b134 | 54 | [UNIT_SNAPSHOT] = &snapshot_vtable, |
01f78473 LP |
55 | [UNIT_SWAP] = &swap_vtable, |
56 | [UNIT_PATH] = &path_vtable | |
87f0e418 LP |
57 | }; |
58 | ||
87f0e418 LP |
59 | Unit *unit_new(Manager *m) { |
60 | Unit *u; | |
61 | ||
62 | assert(m); | |
63 | ||
64 | if (!(u = new0(Unit, 1))) | |
65 | return NULL; | |
66 | ||
67 | if (!(u->meta.names = set_new(string_hash_func, string_compare_func))) { | |
68 | free(u); | |
69 | return NULL; | |
70 | } | |
71 | ||
72 | u->meta.manager = m; | |
73 | u->meta.type = _UNIT_TYPE_INVALID; | |
cca098b0 | 74 | u->meta.deserialized_job = _JOB_TYPE_INVALID; |
a40eb732 | 75 | u->meta.default_dependencies = true; |
87f0e418 LP |
76 | |
77 | return u; | |
78 | } | |
79 | ||
f278026d LP |
80 | bool unit_has_name(Unit *u, const char *name) { |
81 | assert(u); | |
82 | assert(name); | |
83 | ||
84 | return !!set_get(u->meta.names, (char*) name); | |
85 | } | |
86 | ||
87f0e418 LP |
87 | int unit_add_name(Unit *u, const char *text) { |
88 | UnitType t; | |
276c3e78 | 89 | char *s, *i = NULL; |
87f0e418 LP |
90 | int r; |
91 | ||
92 | assert(u); | |
93 | assert(text); | |
94 | ||
9e2f7c11 LP |
95 | if (unit_name_is_template(text)) { |
96 | if (!u->meta.instance) | |
97 | return -EINVAL; | |
87f0e418 | 98 | |
9e2f7c11 LP |
99 | s = unit_name_replace_instance(text, u->meta.instance); |
100 | } else | |
101 | s = strdup(text); | |
87f0e418 | 102 | |
9e2f7c11 LP |
103 | if (!s) |
104 | return -ENOMEM; | |
87f0e418 | 105 | |
9e2f7c11 LP |
106 | if (!unit_name_is_valid(s)) { |
107 | r = -EINVAL; | |
108 | goto fail; | |
109 | } | |
e537352b | 110 | |
9e2f7c11 | 111 | assert_se((t = unit_name_to_type(s)) >= 0); |
87f0e418 | 112 | |
9e2f7c11 LP |
113 | if (u->meta.type != _UNIT_TYPE_INVALID && t != u->meta.type) { |
114 | r = -EINVAL; | |
115 | goto fail; | |
116 | } | |
87f0e418 | 117 | |
9e2f7c11 LP |
118 | if ((r = unit_name_to_instance(s, &i)) < 0) |
119 | goto fail; | |
87f0e418 | 120 | |
9e2f7c11 LP |
121 | if (i && unit_vtable[t]->no_instances) |
122 | goto fail; | |
123 | ||
276c3e78 LP |
124 | /* Ensure that this unit is either instanced or not instanced, |
125 | * but not both. */ | |
126 | if (u->meta.type != _UNIT_TYPE_INVALID && !u->meta.instance != !i) { | |
9e2f7c11 LP |
127 | r = -EINVAL; |
128 | goto fail; | |
129 | } | |
130 | ||
131 | if (unit_vtable[t]->no_alias && | |
132 | !set_isempty(u->meta.names) && | |
133 | !set_get(u->meta.names, s)) { | |
134 | r = -EEXIST; | |
135 | goto fail; | |
136 | } | |
137 | ||
4f0f902f LP |
138 | if (hashmap_size(u->meta.manager->units) >= MANAGER_MAX_NAMES) { |
139 | r = -E2BIG; | |
140 | goto fail; | |
141 | } | |
142 | ||
9e2f7c11 LP |
143 | if ((r = set_put(u->meta.names, s)) < 0) { |
144 | if (r == -EEXIST) | |
145 | r = 0; | |
146 | goto fail; | |
87f0e418 LP |
147 | } |
148 | ||
149 | if ((r = hashmap_put(u->meta.manager->units, s, u)) < 0) { | |
150 | set_remove(u->meta.names, s); | |
9e2f7c11 | 151 | goto fail; |
87f0e418 LP |
152 | } |
153 | ||
e537352b | 154 | if (u->meta.type == _UNIT_TYPE_INVALID) { |
ef734fd6 | 155 | |
e537352b | 156 | u->meta.type = t; |
9e2f7c11 LP |
157 | u->meta.id = s; |
158 | u->meta.instance = i; | |
159 | ||
160 | LIST_PREPEND(Meta, units_per_type, u->meta.manager->units_per_type[t], &u->meta); | |
e537352b LP |
161 | |
162 | if (UNIT_VTABLE(u)->init) | |
163 | UNIT_VTABLE(u)->init(u); | |
9e2f7c11 LP |
164 | } else |
165 | free(i); | |
87f0e418 | 166 | |
c1e1601e | 167 | unit_add_to_dbus_queue(u); |
87f0e418 | 168 | return 0; |
9e2f7c11 LP |
169 | |
170 | fail: | |
171 | free(s); | |
172 | free(i); | |
173 | ||
174 | return r; | |
87f0e418 LP |
175 | } |
176 | ||
0ae97ec1 | 177 | int unit_choose_id(Unit *u, const char *name) { |
276c3e78 LP |
178 | char *s, *t = NULL, *i; |
179 | int r; | |
0ae97ec1 LP |
180 | |
181 | assert(u); | |
182 | assert(name); | |
183 | ||
9e2f7c11 LP |
184 | if (unit_name_is_template(name)) { |
185 | ||
186 | if (!u->meta.instance) | |
187 | return -EINVAL; | |
188 | ||
189 | if (!(t = unit_name_replace_instance(name, u->meta.instance))) | |
190 | return -ENOMEM; | |
191 | ||
192 | name = t; | |
193 | } | |
194 | ||
0ae97ec1 | 195 | /* Selects one of the names of this unit as the id */ |
9e2f7c11 LP |
196 | s = set_get(u->meta.names, (char*) name); |
197 | free(t); | |
0ae97ec1 | 198 | |
9e2f7c11 | 199 | if (!s) |
0ae97ec1 LP |
200 | return -ENOENT; |
201 | ||
276c3e78 LP |
202 | if ((r = unit_name_to_instance(s, &i)) < 0) |
203 | return r; | |
204 | ||
0ae97ec1 | 205 | u->meta.id = s; |
276c3e78 LP |
206 | |
207 | free(u->meta.instance); | |
208 | u->meta.instance = i; | |
209 | ||
c1e1601e | 210 | unit_add_to_dbus_queue(u); |
9e2f7c11 | 211 | |
0ae97ec1 LP |
212 | return 0; |
213 | } | |
214 | ||
f50e0a01 LP |
215 | int unit_set_description(Unit *u, const char *description) { |
216 | char *s; | |
217 | ||
218 | assert(u); | |
219 | ||
220 | if (!(s = strdup(description))) | |
221 | return -ENOMEM; | |
222 | ||
223 | free(u->meta.description); | |
224 | u->meta.description = s; | |
c1e1601e LP |
225 | |
226 | unit_add_to_dbus_queue(u); | |
f50e0a01 LP |
227 | return 0; |
228 | } | |
229 | ||
701cc384 LP |
230 | bool unit_check_gc(Unit *u) { |
231 | assert(u); | |
232 | ||
b86d44e5 LP |
233 | if (u->meta.load_state == UNIT_STUB) |
234 | return true; | |
235 | ||
701cc384 LP |
236 | if (UNIT_VTABLE(u)->no_gc) |
237 | return true; | |
238 | ||
6c073082 LP |
239 | if (u->meta.no_gc) |
240 | return true; | |
241 | ||
701cc384 LP |
242 | if (u->meta.job) |
243 | return true; | |
244 | ||
245 | if (unit_active_state(u) != UNIT_INACTIVE) | |
246 | return true; | |
247 | ||
248 | if (UNIT_VTABLE(u)->check_gc) | |
249 | if (UNIT_VTABLE(u)->check_gc(u)) | |
250 | return true; | |
251 | ||
252 | return false; | |
253 | } | |
254 | ||
87f0e418 LP |
255 | void unit_add_to_load_queue(Unit *u) { |
256 | assert(u); | |
819e213f | 257 | assert(u->meta.type != _UNIT_TYPE_INVALID); |
87f0e418 LP |
258 | |
259 | if (u->meta.load_state != UNIT_STUB || u->meta.in_load_queue) | |
260 | return; | |
261 | ||
262 | LIST_PREPEND(Meta, load_queue, u->meta.manager->load_queue, &u->meta); | |
263 | u->meta.in_load_queue = true; | |
264 | } | |
265 | ||
23a177ef LP |
266 | void unit_add_to_cleanup_queue(Unit *u) { |
267 | assert(u); | |
268 | ||
269 | if (u->meta.in_cleanup_queue) | |
270 | return; | |
271 | ||
272 | LIST_PREPEND(Meta, cleanup_queue, u->meta.manager->cleanup_queue, &u->meta); | |
273 | u->meta.in_cleanup_queue = true; | |
274 | } | |
275 | ||
701cc384 LP |
276 | void unit_add_to_gc_queue(Unit *u) { |
277 | assert(u); | |
278 | ||
279 | if (u->meta.in_gc_queue || u->meta.in_cleanup_queue) | |
280 | return; | |
281 | ||
282 | if (unit_check_gc(u)) | |
283 | return; | |
284 | ||
285 | LIST_PREPEND(Meta, gc_queue, u->meta.manager->gc_queue, &u->meta); | |
286 | u->meta.in_gc_queue = true; | |
287 | ||
288 | u->meta.manager->n_in_gc_queue ++; | |
289 | ||
290 | if (u->meta.manager->gc_queue_timestamp <= 0) | |
291 | u->meta.manager->gc_queue_timestamp = now(CLOCK_MONOTONIC); | |
292 | } | |
293 | ||
c1e1601e LP |
294 | void unit_add_to_dbus_queue(Unit *u) { |
295 | assert(u); | |
819e213f | 296 | assert(u->meta.type != _UNIT_TYPE_INVALID); |
c1e1601e | 297 | |
94b6dfa2 | 298 | if (u->meta.load_state == UNIT_STUB || u->meta.in_dbus_queue) |
c1e1601e LP |
299 | return; |
300 | ||
a567261a LP |
301 | /* Shortcut things if nobody cares */ |
302 | if (!bus_has_subscriber(u->meta.manager)) { | |
94b6dfa2 LP |
303 | u->meta.sent_dbus_new_signal = true; |
304 | return; | |
305 | } | |
306 | ||
c1e1601e LP |
307 | LIST_PREPEND(Meta, dbus_queue, u->meta.manager->dbus_unit_queue, &u->meta); |
308 | u->meta.in_dbus_queue = true; | |
309 | } | |
310 | ||
87f0e418 LP |
311 | static void bidi_set_free(Unit *u, Set *s) { |
312 | Iterator i; | |
313 | Unit *other; | |
314 | ||
315 | assert(u); | |
316 | ||
317 | /* Frees the set and makes sure we are dropped from the | |
318 | * inverse pointers */ | |
319 | ||
320 | SET_FOREACH(other, s, i) { | |
321 | UnitDependency d; | |
322 | ||
323 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) | |
324 | set_remove(other->meta.dependencies[d], u); | |
701cc384 LP |
325 | |
326 | unit_add_to_gc_queue(other); | |
87f0e418 LP |
327 | } |
328 | ||
329 | set_free(s); | |
330 | } | |
331 | ||
332 | void unit_free(Unit *u) { | |
333 | UnitDependency d; | |
334 | Iterator i; | |
335 | char *t; | |
336 | ||
337 | assert(u); | |
338 | ||
c1e1601e LP |
339 | bus_unit_send_removed_signal(u); |
340 | ||
a013b84b LP |
341 | if (u->meta.load_state != UNIT_STUB) |
342 | if (UNIT_VTABLE(u)->done) | |
343 | UNIT_VTABLE(u)->done(u); | |
344 | ||
87f0e418 LP |
345 | SET_FOREACH(t, u->meta.names, i) |
346 | hashmap_remove_value(u->meta.manager->units, t, u); | |
347 | ||
964e0949 LP |
348 | if (u->meta.job) |
349 | job_free(u->meta.job); | |
350 | ||
351 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) | |
352 | bidi_set_free(u, u->meta.dependencies[d]); | |
353 | ||
ef734fd6 LP |
354 | if (u->meta.type != _UNIT_TYPE_INVALID) |
355 | LIST_REMOVE(Meta, units_per_type, u->meta.manager->units_per_type[u->meta.type], &u->meta); | |
356 | ||
87f0e418 LP |
357 | if (u->meta.in_load_queue) |
358 | LIST_REMOVE(Meta, load_queue, u->meta.manager->load_queue, &u->meta); | |
359 | ||
c1e1601e LP |
360 | if (u->meta.in_dbus_queue) |
361 | LIST_REMOVE(Meta, dbus_queue, u->meta.manager->dbus_unit_queue, &u->meta); | |
362 | ||
23a177ef LP |
363 | if (u->meta.in_cleanup_queue) |
364 | LIST_REMOVE(Meta, cleanup_queue, u->meta.manager->cleanup_queue, &u->meta); | |
365 | ||
701cc384 LP |
366 | if (u->meta.in_gc_queue) { |
367 | LIST_REMOVE(Meta, gc_queue, u->meta.manager->gc_queue, &u->meta); | |
368 | u->meta.manager->n_in_gc_queue--; | |
369 | } | |
370 | ||
e537352b | 371 | cgroup_bonding_free_list(u->meta.cgroup_bondings); |
87f0e418 | 372 | |
87f0e418 | 373 | free(u->meta.description); |
6be1e7d5 | 374 | free(u->meta.fragment_path); |
87f0e418 | 375 | |
53ec43c6 | 376 | set_free_free(u->meta.names); |
87f0e418 | 377 | |
9e2f7c11 LP |
378 | free(u->meta.instance); |
379 | ||
87f0e418 LP |
380 | free(u); |
381 | } | |
382 | ||
383 | UnitActiveState unit_active_state(Unit *u) { | |
384 | assert(u); | |
385 | ||
6124958c LP |
386 | if (u->meta.load_state == UNIT_MERGED) |
387 | return unit_active_state(unit_follow_merge(u)); | |
388 | ||
389 | /* After a reload it might happen that a unit is not correctly | |
390 | * loaded but still has a process around. That's why we won't | |
fdf20a31 | 391 | * shortcut failed loading to UNIT_INACTIVE_FAILED. */ |
87f0e418 LP |
392 | |
393 | return UNIT_VTABLE(u)->active_state(u); | |
394 | } | |
395 | ||
10a94420 LP |
396 | const char* unit_sub_state_to_string(Unit *u) { |
397 | assert(u); | |
398 | ||
399 | return UNIT_VTABLE(u)->sub_state_to_string(u); | |
400 | } | |
401 | ||
23a177ef LP |
402 | static void complete_move(Set **s, Set **other) { |
403 | assert(s); | |
404 | assert(other); | |
87f0e418 | 405 | |
23a177ef LP |
406 | if (!*other) |
407 | return; | |
87f0e418 LP |
408 | |
409 | if (*s) | |
23a177ef LP |
410 | set_move(*s, *other); |
411 | else { | |
412 | *s = *other; | |
413 | *other = NULL; | |
414 | } | |
415 | } | |
87f0e418 | 416 | |
23a177ef LP |
417 | static void merge_names(Unit *u, Unit *other) { |
418 | char *t; | |
419 | Iterator i; | |
87f0e418 | 420 | |
23a177ef LP |
421 | assert(u); |
422 | assert(other); | |
423 | ||
424 | complete_move(&u->meta.names, &other->meta.names); | |
425 | ||
53ec43c6 | 426 | set_free_free(other->meta.names); |
23a177ef LP |
427 | other->meta.names = NULL; |
428 | other->meta.id = NULL; | |
429 | ||
430 | SET_FOREACH(t, u->meta.names, i) | |
431 | assert_se(hashmap_replace(u->meta.manager->units, t, u) == 0); | |
87f0e418 LP |
432 | } |
433 | ||
23a177ef LP |
434 | static void merge_dependencies(Unit *u, Unit *other, UnitDependency d) { |
435 | Iterator i; | |
436 | Unit *back; | |
87f0e418 | 437 | int r; |
23a177ef LP |
438 | |
439 | assert(u); | |
440 | assert(other); | |
441 | assert(d < _UNIT_DEPENDENCY_MAX); | |
442 | ||
83a95334 | 443 | /* Fix backwards pointers */ |
23a177ef LP |
444 | SET_FOREACH(back, other->meta.dependencies[d], i) { |
445 | UnitDependency k; | |
446 | ||
447 | for (k = 0; k < _UNIT_DEPENDENCY_MAX; k++) | |
448 | if ((r = set_remove_and_put(back->meta.dependencies[k], other, u)) < 0) { | |
449 | ||
450 | if (r == -EEXIST) | |
451 | set_remove(back->meta.dependencies[k], other); | |
452 | else | |
453 | assert(r == -ENOENT); | |
454 | } | |
455 | } | |
456 | ||
457 | complete_move(&u->meta.dependencies[d], &other->meta.dependencies[d]); | |
458 | ||
459 | set_free(other->meta.dependencies[d]); | |
460 | other->meta.dependencies[d] = NULL; | |
461 | } | |
462 | ||
463 | int unit_merge(Unit *u, Unit *other) { | |
87f0e418 LP |
464 | UnitDependency d; |
465 | ||
466 | assert(u); | |
467 | assert(other); | |
468 | assert(u->meta.manager == other->meta.manager); | |
9e2f7c11 | 469 | assert(u->meta.type != _UNIT_TYPE_INVALID); |
87f0e418 | 470 | |
cc916967 LP |
471 | other = unit_follow_merge(other); |
472 | ||
23a177ef LP |
473 | if (other == u) |
474 | return 0; | |
475 | ||
9e2f7c11 LP |
476 | if (u->meta.type != other->meta.type) |
477 | return -EINVAL; | |
478 | ||
276c3e78 | 479 | if (!u->meta.instance != !other->meta.instance) |
87f0e418 LP |
480 | return -EINVAL; |
481 | ||
cc916967 | 482 | if (other->meta.load_state != UNIT_STUB && |
fdf20a31 | 483 | other->meta.load_state != UNIT_ERROR) |
23a177ef | 484 | return -EEXIST; |
87f0e418 | 485 | |
819e213f LP |
486 | if (other->meta.job) |
487 | return -EEXIST; | |
488 | ||
fdf20a31 | 489 | if (!UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other))) |
819e213f LP |
490 | return -EEXIST; |
491 | ||
87f0e418 | 492 | /* Merge names */ |
23a177ef | 493 | merge_names(u, other); |
87f0e418 LP |
494 | |
495 | /* Merge dependencies */ | |
496 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) | |
23a177ef | 497 | merge_dependencies(u, other, d); |
87f0e418 | 498 | |
23a177ef LP |
499 | other->meta.load_state = UNIT_MERGED; |
500 | other->meta.merged_into = u; | |
501 | ||
3616a49c LP |
502 | /* If there is still some data attached to the other node, we |
503 | * don't need it anymore, and can free it. */ | |
504 | if (other->meta.load_state != UNIT_STUB) | |
505 | if (UNIT_VTABLE(other)->done) | |
506 | UNIT_VTABLE(other)->done(other); | |
507 | ||
508 | unit_add_to_dbus_queue(u); | |
23a177ef LP |
509 | unit_add_to_cleanup_queue(other); |
510 | ||
511 | return 0; | |
512 | } | |
513 | ||
514 | int unit_merge_by_name(Unit *u, const char *name) { | |
515 | Unit *other; | |
9e2f7c11 LP |
516 | int r; |
517 | char *s = NULL; | |
23a177ef LP |
518 | |
519 | assert(u); | |
520 | assert(name); | |
521 | ||
9e2f7c11 LP |
522 | if (unit_name_is_template(name)) { |
523 | if (!u->meta.instance) | |
524 | return -EINVAL; | |
525 | ||
526 | if (!(s = unit_name_replace_instance(name, u->meta.instance))) | |
527 | return -ENOMEM; | |
528 | ||
529 | name = s; | |
530 | } | |
531 | ||
23a177ef | 532 | if (!(other = manager_get_unit(u->meta.manager, name))) |
9e2f7c11 LP |
533 | r = unit_add_name(u, name); |
534 | else | |
535 | r = unit_merge(u, other); | |
23a177ef | 536 | |
9e2f7c11 LP |
537 | free(s); |
538 | return r; | |
23a177ef LP |
539 | } |
540 | ||
541 | Unit* unit_follow_merge(Unit *u) { | |
542 | assert(u); | |
543 | ||
544 | while (u->meta.load_state == UNIT_MERGED) | |
545 | assert_se(u = u->meta.merged_into); | |
546 | ||
547 | return u; | |
548 | } | |
549 | ||
550 | int unit_add_exec_dependencies(Unit *u, ExecContext *c) { | |
551 | int r; | |
552 | ||
553 | assert(u); | |
554 | assert(c); | |
555 | ||
ecc6e2b8 LP |
556 | if (c->std_output != EXEC_OUTPUT_KMSG && |
557 | c->std_output != EXEC_OUTPUT_SYSLOG && | |
558 | c->std_error != EXEC_OUTPUT_KMSG && | |
559 | c->std_error != EXEC_OUTPUT_SYSLOG) | |
23a177ef LP |
560 | return 0; |
561 | ||
562 | /* If syslog or kernel logging is requested, make sure our own | |
563 | * logging daemon is run first. */ | |
564 | ||
701cc384 | 565 | if ((r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_LOGGER_SOCKET, NULL, true)) < 0) |
23a177ef LP |
566 | return r; |
567 | ||
a3d4e06d | 568 | if (u->meta.manager->running_as == MANAGER_SYSTEM) |
701cc384 | 569 | if ((r = unit_add_dependency_by_name(u, UNIT_REQUIRES, SPECIAL_LOGGER_SOCKET, NULL, true)) < 0) |
23a177ef LP |
570 | return r; |
571 | ||
87f0e418 LP |
572 | return 0; |
573 | } | |
574 | ||
87f0e418 LP |
575 | const char *unit_description(Unit *u) { |
576 | assert(u); | |
577 | ||
578 | if (u->meta.description) | |
579 | return u->meta.description; | |
580 | ||
9f151f29 | 581 | return strna(u->meta.id); |
87f0e418 LP |
582 | } |
583 | ||
584 | void unit_dump(Unit *u, FILE *f, const char *prefix) { | |
87f0e418 LP |
585 | char *t; |
586 | UnitDependency d; | |
587 | Iterator i; | |
47be870b LP |
588 | char *p2; |
589 | const char *prefix2; | |
8e274523 | 590 | CGroupBonding *b; |
173e3821 LP |
591 | char |
592 | timestamp1[FORMAT_TIMESTAMP_MAX], | |
593 | timestamp2[FORMAT_TIMESTAMP_MAX], | |
594 | timestamp3[FORMAT_TIMESTAMP_MAX], | |
faf919f1 LP |
595 | timestamp4[FORMAT_TIMESTAMP_MAX], |
596 | timespan[FORMAT_TIMESPAN_MAX]; | |
a7f241db | 597 | Unit *following; |
87f0e418 LP |
598 | |
599 | assert(u); | |
9e2f7c11 | 600 | assert(u->meta.type >= 0); |
87f0e418 LP |
601 | |
602 | if (!prefix) | |
603 | prefix = ""; | |
47be870b LP |
604 | p2 = strappend(prefix, "\t"); |
605 | prefix2 = p2 ? p2 : prefix; | |
87f0e418 LP |
606 | |
607 | fprintf(f, | |
40d50879 | 608 | "%s-> Unit %s:\n" |
87f0e418 | 609 | "%s\tDescription: %s\n" |
9e2f7c11 | 610 | "%s\tInstance: %s\n" |
87f0e418 | 611 | "%s\tUnit Load State: %s\n" |
2fad8195 | 612 | "%s\tUnit Active State: %s\n" |
173e3821 | 613 | "%s\tInactive Exit Timestamp: %s\n" |
2fad8195 | 614 | "%s\tActive Enter Timestamp: %s\n" |
701cc384 | 615 | "%s\tActive Exit Timestamp: %s\n" |
173e3821 | 616 | "%s\tInactive Enter Timestamp: %s\n" |
45fb0699 LP |
617 | "%s\tGC Check Good: %s\n" |
618 | "%s\tNeed Daemon Reload: %s\n", | |
9e2f7c11 | 619 | prefix, u->meta.id, |
87f0e418 | 620 | prefix, unit_description(u), |
9e2f7c11 | 621 | prefix, strna(u->meta.instance), |
94f04347 | 622 | prefix, unit_load_state_to_string(u->meta.load_state), |
2fad8195 | 623 | prefix, unit_active_state_to_string(unit_active_state(u)), |
871d7de4 LP |
624 | prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->meta.inactive_exit_timestamp.realtime)), |
625 | prefix, strna(format_timestamp(timestamp2, sizeof(timestamp2), u->meta.active_enter_timestamp.realtime)), | |
626 | prefix, strna(format_timestamp(timestamp3, sizeof(timestamp3), u->meta.active_exit_timestamp.realtime)), | |
627 | prefix, strna(format_timestamp(timestamp4, sizeof(timestamp4), u->meta.inactive_enter_timestamp.realtime)), | |
45fb0699 LP |
628 | prefix, yes_no(unit_check_gc(u)), |
629 | prefix, yes_no(unit_need_daemon_reload(u))); | |
0301abf4 | 630 | |
87f0e418 LP |
631 | SET_FOREACH(t, u->meta.names, i) |
632 | fprintf(f, "%s\tName: %s\n", prefix, t); | |
633 | ||
a7f241db LP |
634 | if ((following = unit_following(u))) |
635 | fprintf(f, "%s\tFollowing: %s\n", prefix, following->meta.id); | |
8fe914ec | 636 | |
23a177ef LP |
637 | if (u->meta.fragment_path) |
638 | fprintf(f, "%s\tFragment Path: %s\n", prefix, u->meta.fragment_path); | |
639 | ||
faf919f1 LP |
640 | if (u->meta.job_timeout > 0) |
641 | fprintf(f, "%s\tJob Timeout: %s\n", prefix, format_timespan(timespan, sizeof(timespan), u->meta.job_timeout)); | |
642 | ||
87f0e418 LP |
643 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) { |
644 | Unit *other; | |
645 | ||
87f0e418 | 646 | SET_FOREACH(other, u->meta.dependencies[d], i) |
9e2f7c11 | 647 | fprintf(f, "%s\t%s: %s\n", prefix, unit_dependency_to_string(d), other->meta.id); |
87f0e418 LP |
648 | } |
649 | ||
23a177ef | 650 | if (u->meta.load_state == UNIT_LOADED) { |
b0650475 LP |
651 | fprintf(f, |
652 | "%s\tRecursive Stop: %s\n" | |
a40eb732 | 653 | "%s\tStopWhenUnneeded: %s\n" |
b5e9dba8 LP |
654 | "%s\tRefuseManualStart: %s\n" |
655 | "%s\tRefuseManualStop: %s\n" | |
3b6fdb5b LP |
656 | "%s\tDefaultDependencies: %s\n" |
657 | "%s\tIgnoreDependencyFailure: %s\n", | |
b0650475 | 658 | prefix, yes_no(u->meta.recursive_stop), |
a40eb732 | 659 | prefix, yes_no(u->meta.stop_when_unneeded), |
b5e9dba8 LP |
660 | prefix, yes_no(u->meta.refuse_manual_start), |
661 | prefix, yes_no(u->meta.refuse_manual_stop), | |
3b6fdb5b LP |
662 | prefix, yes_no(u->meta.default_dependencies), |
663 | prefix, yes_no(u->meta.ignore_dependency_failure)); | |
b0650475 | 664 | |
23a177ef LP |
665 | LIST_FOREACH(by_unit, b, u->meta.cgroup_bondings) |
666 | fprintf(f, "%s\tControlGroup: %s:%s\n", | |
667 | prefix, b->controller, b->path); | |
8e274523 | 668 | |
23a177ef LP |
669 | if (UNIT_VTABLE(u)->dump) |
670 | UNIT_VTABLE(u)->dump(u, f, prefix2); | |
b0650475 LP |
671 | |
672 | } else if (u->meta.load_state == UNIT_MERGED) | |
673 | fprintf(f, | |
674 | "%s\tMerged into: %s\n", | |
9e2f7c11 | 675 | prefix, u->meta.merged_into->meta.id); |
fdf20a31 | 676 | else if (u->meta.load_state == UNIT_ERROR) |
8821a00f LP |
677 | fprintf(f, "%s\tLoad Error Code: %s\n", prefix, strerror(-u->meta.load_error)); |
678 | ||
87f0e418 LP |
679 | |
680 | if (u->meta.job) | |
681 | job_dump(u->meta.job, f, prefix2); | |
682 | ||
47be870b | 683 | free(p2); |
87f0e418 LP |
684 | } |
685 | ||
686 | /* Common implementation for multiple backends */ | |
e537352b | 687 | int unit_load_fragment_and_dropin(Unit *u) { |
23a177ef LP |
688 | int r; |
689 | ||
690 | assert(u); | |
23a177ef LP |
691 | |
692 | /* Load a .service file */ | |
e537352b | 693 | if ((r = unit_load_fragment(u)) < 0) |
23a177ef LP |
694 | return r; |
695 | ||
e537352b | 696 | if (u->meta.load_state == UNIT_STUB) |
23a177ef LP |
697 | return -ENOENT; |
698 | ||
699 | /* Load drop-in directory data */ | |
700 | if ((r = unit_load_dropin(unit_follow_merge(u))) < 0) | |
701 | return r; | |
702 | ||
703 | return 0; | |
704 | } | |
705 | ||
706 | /* Common implementation for multiple backends */ | |
e537352b | 707 | int unit_load_fragment_and_dropin_optional(Unit *u) { |
23a177ef | 708 | int r; |
87f0e418 LP |
709 | |
710 | assert(u); | |
711 | ||
23a177ef LP |
712 | /* Same as unit_load_fragment_and_dropin(), but whether |
713 | * something can be loaded or not doesn't matter. */ | |
714 | ||
715 | /* Load a .service file */ | |
e537352b | 716 | if ((r = unit_load_fragment(u)) < 0) |
87f0e418 LP |
717 | return r; |
718 | ||
e537352b LP |
719 | if (u->meta.load_state == UNIT_STUB) |
720 | u->meta.load_state = UNIT_LOADED; | |
d46de8a1 | 721 | |
87f0e418 | 722 | /* Load drop-in directory data */ |
23a177ef | 723 | if ((r = unit_load_dropin(unit_follow_merge(u))) < 0) |
87f0e418 LP |
724 | return r; |
725 | ||
23a177ef | 726 | return 0; |
87f0e418 LP |
727 | } |
728 | ||
bba34eed | 729 | int unit_add_default_target_dependency(Unit *u, Unit *target) { |
98bc2000 LP |
730 | assert(u); |
731 | assert(target); | |
732 | ||
733 | if (target->meta.type != UNIT_TARGET) | |
734 | return 0; | |
735 | ||
bba34eed LP |
736 | /* Only add the dependency if boths units are loaded, so that |
737 | * that loop check below is reliable */ | |
738 | if (u->meta.load_state != UNIT_LOADED || | |
739 | target->meta.load_state != UNIT_LOADED) | |
740 | return 0; | |
741 | ||
98bc2000 LP |
742 | /* Don't create loops */ |
743 | if (set_get(target->meta.dependencies[UNIT_BEFORE], u)) | |
744 | return 0; | |
745 | ||
746 | return unit_add_dependency(target, UNIT_AFTER, u, true); | |
747 | } | |
748 | ||
749 | static int unit_add_default_dependencies(Unit *u) { | |
bba34eed | 750 | Unit *target; |
98bc2000 LP |
751 | Iterator i; |
752 | int r; | |
753 | ||
754 | assert(u); | |
755 | ||
bba34eed LP |
756 | SET_FOREACH(target, u->meta.dependencies[UNIT_REQUIRED_BY], i) |
757 | if ((r = unit_add_default_target_dependency(u, target)) < 0) | |
98bc2000 LP |
758 | return r; |
759 | ||
bba34eed LP |
760 | SET_FOREACH(target, u->meta.dependencies[UNIT_REQUIRED_BY_OVERRIDABLE], i) |
761 | if ((r = unit_add_default_target_dependency(u, target)) < 0) | |
98bc2000 LP |
762 | return r; |
763 | ||
bba34eed LP |
764 | SET_FOREACH(target, u->meta.dependencies[UNIT_WANTED_BY], i) |
765 | if ((r = unit_add_default_target_dependency(u, target)) < 0) | |
98bc2000 LP |
766 | return r; |
767 | ||
768 | return 0; | |
769 | } | |
770 | ||
87f0e418 LP |
771 | int unit_load(Unit *u) { |
772 | int r; | |
773 | ||
774 | assert(u); | |
775 | ||
776 | if (u->meta.in_load_queue) { | |
777 | LIST_REMOVE(Meta, load_queue, u->meta.manager->load_queue, &u->meta); | |
778 | u->meta.in_load_queue = false; | |
779 | } | |
780 | ||
e537352b LP |
781 | if (u->meta.type == _UNIT_TYPE_INVALID) |
782 | return -EINVAL; | |
783 | ||
87f0e418 LP |
784 | if (u->meta.load_state != UNIT_STUB) |
785 | return 0; | |
786 | ||
e537352b LP |
787 | if (UNIT_VTABLE(u)->load) |
788 | if ((r = UNIT_VTABLE(u)->load(u)) < 0) | |
87f0e418 | 789 | goto fail; |
23a177ef | 790 | |
e537352b | 791 | if (u->meta.load_state == UNIT_STUB) { |
23a177ef LP |
792 | r = -ENOENT; |
793 | goto fail; | |
794 | } | |
795 | ||
98bc2000 LP |
796 | if (u->meta.load_state == UNIT_LOADED && |
797 | u->meta.default_dependencies) | |
798 | if ((r = unit_add_default_dependencies(u)) < 0) | |
799 | goto fail; | |
800 | ||
23a177ef LP |
801 | assert((u->meta.load_state != UNIT_MERGED) == !u->meta.merged_into); |
802 | ||
803 | unit_add_to_dbus_queue(unit_follow_merge(u)); | |
701cc384 | 804 | unit_add_to_gc_queue(u); |
87f0e418 | 805 | |
87f0e418 LP |
806 | return 0; |
807 | ||
808 | fail: | |
fdf20a31 | 809 | u->meta.load_state = UNIT_ERROR; |
8821a00f | 810 | u->meta.load_error = r; |
c1e1601e | 811 | unit_add_to_dbus_queue(u); |
23a177ef | 812 | |
8821a00f | 813 | log_debug("Failed to load configuration for %s: %s", u->meta.id, strerror(-r)); |
23a177ef | 814 | |
87f0e418 LP |
815 | return r; |
816 | } | |
817 | ||
818 | /* Errors: | |
d5159713 LP |
819 | * -EBADR: This unit type does not support starting. |
820 | * -EALREADY: Unit is already started. | |
821 | * -EAGAIN: An operation is already in progress. Retry later. | |
822 | * -ECANCELED: Too many requests for now. | |
87f0e418 LP |
823 | */ |
824 | int unit_start(Unit *u) { | |
825 | UnitActiveState state; | |
826 | ||
827 | assert(u); | |
828 | ||
6124958c LP |
829 | if (u->meta.load_state != UNIT_LOADED) |
830 | return -EINVAL; | |
831 | ||
7898b0cf LP |
832 | /* If this is already (being) started, then this will |
833 | * succeed. Note that this will even succeed if this unit is | |
834 | * not startable by the user. This is relied on to detect when | |
835 | * we need to wait for units and when waiting is finished. */ | |
87f0e418 LP |
836 | state = unit_active_state(u); |
837 | if (UNIT_IS_ACTIVE_OR_RELOADING(state)) | |
838 | return -EALREADY; | |
839 | ||
7898b0cf LP |
840 | /* If it is stopped, but we cannot start it, then fail */ |
841 | if (!UNIT_VTABLE(u)->start) | |
842 | return -EBADR; | |
843 | ||
87f0e418 LP |
844 | /* We don't suppress calls to ->start() here when we are |
845 | * already starting, to allow this request to be used as a | |
846 | * "hurry up" call, for example when the unit is in some "auto | |
847 | * restart" state where it waits for a holdoff timer to elapse | |
848 | * before it will start again. */ | |
849 | ||
c1e1601e | 850 | unit_add_to_dbus_queue(u); |
9e58ff9c LP |
851 | |
852 | unit_status_printf(u, "Starting %s...\n", unit_description(u)); | |
853 | ||
87f0e418 LP |
854 | return UNIT_VTABLE(u)->start(u); |
855 | } | |
856 | ||
857 | bool unit_can_start(Unit *u) { | |
858 | assert(u); | |
859 | ||
860 | return !!UNIT_VTABLE(u)->start; | |
861 | } | |
862 | ||
2528a7a6 LP |
863 | bool unit_can_isolate(Unit *u) { |
864 | assert(u); | |
865 | ||
866 | return unit_can_start(u) && | |
867 | u->meta.allow_isolate; | |
868 | } | |
869 | ||
87f0e418 LP |
870 | /* Errors: |
871 | * -EBADR: This unit type does not support stopping. | |
872 | * -EALREADY: Unit is already stopped. | |
873 | * -EAGAIN: An operation is already in progress. Retry later. | |
874 | */ | |
875 | int unit_stop(Unit *u) { | |
876 | UnitActiveState state; | |
877 | ||
878 | assert(u); | |
879 | ||
87f0e418 | 880 | state = unit_active_state(u); |
fdf20a31 | 881 | if (UNIT_IS_INACTIVE_OR_FAILED(state)) |
87f0e418 LP |
882 | return -EALREADY; |
883 | ||
7898b0cf LP |
884 | if (!UNIT_VTABLE(u)->stop) |
885 | return -EBADR; | |
886 | ||
c1e1601e | 887 | unit_add_to_dbus_queue(u); |
9e58ff9c LP |
888 | |
889 | unit_status_printf(u, "Stopping %s...\n", unit_description(u)); | |
890 | ||
87f0e418 LP |
891 | return UNIT_VTABLE(u)->stop(u); |
892 | } | |
893 | ||
894 | /* Errors: | |
895 | * -EBADR: This unit type does not support reloading. | |
896 | * -ENOEXEC: Unit is not started. | |
897 | * -EAGAIN: An operation is already in progress. Retry later. | |
898 | */ | |
899 | int unit_reload(Unit *u) { | |
900 | UnitActiveState state; | |
901 | ||
902 | assert(u); | |
903 | ||
6124958c LP |
904 | if (u->meta.load_state != UNIT_LOADED) |
905 | return -EINVAL; | |
906 | ||
87f0e418 LP |
907 | if (!unit_can_reload(u)) |
908 | return -EBADR; | |
909 | ||
910 | state = unit_active_state(u); | |
e364ad06 | 911 | if (state == UNIT_RELOADING) |
87f0e418 LP |
912 | return -EALREADY; |
913 | ||
e364ad06 | 914 | if (state != UNIT_ACTIVE) |
87f0e418 LP |
915 | return -ENOEXEC; |
916 | ||
c1e1601e | 917 | unit_add_to_dbus_queue(u); |
87f0e418 LP |
918 | return UNIT_VTABLE(u)->reload(u); |
919 | } | |
920 | ||
921 | bool unit_can_reload(Unit *u) { | |
922 | assert(u); | |
923 | ||
924 | if (!UNIT_VTABLE(u)->reload) | |
925 | return false; | |
926 | ||
927 | if (!UNIT_VTABLE(u)->can_reload) | |
928 | return true; | |
929 | ||
930 | return UNIT_VTABLE(u)->can_reload(u); | |
931 | } | |
932 | ||
b4a16b7b | 933 | static void unit_check_unneeded(Unit *u) { |
f3bff0eb LP |
934 | Iterator i; |
935 | Unit *other; | |
936 | ||
937 | assert(u); | |
938 | ||
939 | /* If this service shall be shut down when unneeded then do | |
940 | * so. */ | |
941 | ||
942 | if (!u->meta.stop_when_unneeded) | |
943 | return; | |
944 | ||
945 | if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) | |
946 | return; | |
947 | ||
948 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRED_BY], i) | |
949 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) | |
950 | return; | |
951 | ||
9e2f7c11 | 952 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRED_BY_OVERRIDABLE], i) |
f3bff0eb LP |
953 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
954 | return; | |
955 | ||
956 | SET_FOREACH(other, u->meta.dependencies[UNIT_WANTED_BY], i) | |
957 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) | |
958 | return; | |
959 | ||
54165a39 | 960 | log_info("Service %s is not needed anymore. Stopping.", u->meta.id); |
f3bff0eb LP |
961 | |
962 | /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */ | |
398ef8ba | 963 | manager_add_job(u->meta.manager, JOB_STOP, u, JOB_FAIL, true, NULL, NULL); |
f3bff0eb LP |
964 | } |
965 | ||
87f0e418 LP |
966 | static void retroactively_start_dependencies(Unit *u) { |
967 | Iterator i; | |
968 | Unit *other; | |
969 | ||
970 | assert(u); | |
971 | assert(UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))); | |
972 | ||
973 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRES], i) | |
974 | if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) | |
398ef8ba | 975 | manager_add_job(u->meta.manager, JOB_START, other, JOB_REPLACE, true, NULL, NULL); |
87f0e418 | 976 | |
9e2f7c11 | 977 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRES_OVERRIDABLE], i) |
87f0e418 | 978 | if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
398ef8ba | 979 | manager_add_job(u->meta.manager, JOB_START, other, JOB_FAIL, false, NULL, NULL); |
87f0e418 LP |
980 | |
981 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUISITE], i) | |
982 | if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) | |
398ef8ba | 983 | manager_add_job(u->meta.manager, JOB_START, other, JOB_REPLACE, true, NULL, NULL); |
87f0e418 LP |
984 | |
985 | SET_FOREACH(other, u->meta.dependencies[UNIT_WANTS], i) | |
986 | if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) | |
398ef8ba | 987 | manager_add_job(u->meta.manager, JOB_START, other, JOB_FAIL, false, NULL, NULL); |
87f0e418 LP |
988 | |
989 | SET_FOREACH(other, u->meta.dependencies[UNIT_CONFLICTS], i) | |
990 | if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) | |
398ef8ba | 991 | manager_add_job(u->meta.manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL); |
69dd2852 LP |
992 | |
993 | SET_FOREACH(other, u->meta.dependencies[UNIT_CONFLICTED_BY], i) | |
994 | if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) | |
995 | manager_add_job(u->meta.manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL); | |
87f0e418 LP |
996 | } |
997 | ||
998 | static void retroactively_stop_dependencies(Unit *u) { | |
999 | Iterator i; | |
1000 | Unit *other; | |
1001 | ||
1002 | assert(u); | |
1003 | assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))); | |
1004 | ||
f3bff0eb LP |
1005 | if (u->meta.recursive_stop) { |
1006 | /* Pull down units need us recursively if enabled */ | |
1007 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRED_BY], i) | |
1008 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) | |
398ef8ba | 1009 | manager_add_job(u->meta.manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL); |
f3bff0eb LP |
1010 | } |
1011 | ||
1012 | /* Garbage collect services that might not be needed anymore, if enabled */ | |
1013 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRES], i) | |
87f0e418 | 1014 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1015 | unit_check_unneeded(other); |
9e2f7c11 | 1016 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRES_OVERRIDABLE], i) |
f3bff0eb | 1017 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1018 | unit_check_unneeded(other); |
f3bff0eb LP |
1019 | SET_FOREACH(other, u->meta.dependencies[UNIT_WANTS], i) |
1020 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) | |
b4a16b7b | 1021 | unit_check_unneeded(other); |
f3bff0eb LP |
1022 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUISITE], i) |
1023 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) | |
b4a16b7b | 1024 | unit_check_unneeded(other); |
9e2f7c11 | 1025 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUISITE_OVERRIDABLE], i) |
f3bff0eb | 1026 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1027 | unit_check_unneeded(other); |
87f0e418 LP |
1028 | } |
1029 | ||
1030 | void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns) { | |
63983207 | 1031 | dual_timestamp ts; |
7e6e7b06 | 1032 | bool unexpected; |
a096ed36 | 1033 | |
87f0e418 LP |
1034 | assert(u); |
1035 | assert(os < _UNIT_ACTIVE_STATE_MAX); | |
1036 | assert(ns < _UNIT_ACTIVE_STATE_MAX); | |
87f0e418 | 1037 | |
8e471ccd LP |
1038 | /* Note that this is called for all low-level state changes, |
1039 | * even if they might map to the same high-level | |
1040 | * UnitActiveState! That means that ns == os is OK an expected | |
1041 | * behaviour here. For example: if a mount point is remounted | |
cd6d0a45 | 1042 | * this function will be called too! */ |
87f0e418 | 1043 | |
63983207 | 1044 | dual_timestamp_get(&ts); |
173e3821 | 1045 | |
fdf20a31 | 1046 | if (UNIT_IS_INACTIVE_OR_FAILED(os) && !UNIT_IS_INACTIVE_OR_FAILED(ns)) |
173e3821 | 1047 | u->meta.inactive_exit_timestamp = ts; |
fdf20a31 | 1048 | else if (!UNIT_IS_INACTIVE_OR_FAILED(os) && UNIT_IS_INACTIVE_OR_FAILED(ns)) |
173e3821 LP |
1049 | u->meta.inactive_enter_timestamp = ts; |
1050 | ||
87f0e418 | 1051 | if (!UNIT_IS_ACTIVE_OR_RELOADING(os) && UNIT_IS_ACTIVE_OR_RELOADING(ns)) |
173e3821 | 1052 | u->meta.active_enter_timestamp = ts; |
87f0e418 | 1053 | else if (UNIT_IS_ACTIVE_OR_RELOADING(os) && !UNIT_IS_ACTIVE_OR_RELOADING(ns)) |
173e3821 | 1054 | u->meta.active_exit_timestamp = ts; |
87f0e418 | 1055 | |
fdf20a31 | 1056 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
fb385181 LP |
1057 | cgroup_bonding_trim_list(u->meta.cgroup_bondings, true); |
1058 | ||
871d7de4 | 1059 | timer_unit_notify(u, ns); |
01f78473 | 1060 | path_unit_notify(u, ns); |
871d7de4 | 1061 | |
87f0e418 | 1062 | if (u->meta.job) { |
7e6e7b06 | 1063 | unexpected = false; |
87f0e418 LP |
1064 | |
1065 | if (u->meta.job->state == JOB_WAITING) | |
1066 | ||
1067 | /* So we reached a different state for this | |
1068 | * job. Let's see if we can run it now if it | |
1069 | * failed previously due to EAGAIN. */ | |
c1e1601e | 1070 | job_add_to_run_queue(u->meta.job); |
87f0e418 | 1071 | |
b410e6b9 LP |
1072 | /* Let's check whether this state change constitutes a |
1073 | * finished job, or maybe cotradicts a running job and | |
1074 | * hence needs to invalidate jobs. */ | |
87f0e418 | 1075 | |
b410e6b9 | 1076 | switch (u->meta.job->type) { |
87f0e418 | 1077 | |
b410e6b9 LP |
1078 | case JOB_START: |
1079 | case JOB_VERIFY_ACTIVE: | |
87f0e418 | 1080 | |
b410e6b9 LP |
1081 | if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) |
1082 | job_finish_and_invalidate(u->meta.job, true); | |
1083 | else if (u->meta.job->state == JOB_RUNNING && ns != UNIT_ACTIVATING) { | |
1084 | unexpected = true; | |
41b02ec7 | 1085 | |
fdf20a31 MM |
1086 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
1087 | job_finish_and_invalidate(u->meta.job, ns != UNIT_FAILED); | |
b410e6b9 | 1088 | } |
87f0e418 | 1089 | |
b410e6b9 | 1090 | break; |
87f0e418 | 1091 | |
b410e6b9 LP |
1092 | case JOB_RELOAD: |
1093 | case JOB_RELOAD_OR_START: | |
87f0e418 | 1094 | |
b410e6b9 | 1095 | if (u->meta.job->state == JOB_RUNNING) { |
a096ed36 | 1096 | if (ns == UNIT_ACTIVE) |
87f0e418 | 1097 | job_finish_and_invalidate(u->meta.job, true); |
032ff4af | 1098 | else if (ns != UNIT_ACTIVATING && ns != UNIT_RELOADING) { |
a096ed36 | 1099 | unexpected = true; |
41b02ec7 | 1100 | |
fdf20a31 MM |
1101 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
1102 | job_finish_and_invalidate(u->meta.job, ns != UNIT_FAILED); | |
a096ed36 | 1103 | } |
b410e6b9 | 1104 | } |
87f0e418 | 1105 | |
b410e6b9 | 1106 | break; |
87f0e418 | 1107 | |
b410e6b9 LP |
1108 | case JOB_STOP: |
1109 | case JOB_RESTART: | |
1110 | case JOB_TRY_RESTART: | |
87f0e418 | 1111 | |
fdf20a31 | 1112 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
b410e6b9 LP |
1113 | job_finish_and_invalidate(u->meta.job, true); |
1114 | else if (u->meta.job->state == JOB_RUNNING && ns != UNIT_DEACTIVATING) { | |
1115 | unexpected = true; | |
1116 | job_finish_and_invalidate(u->meta.job, false); | |
1117 | } | |
87f0e418 | 1118 | |
b410e6b9 | 1119 | break; |
87f0e418 | 1120 | |
b410e6b9 LP |
1121 | default: |
1122 | assert_not_reached("Job type unknown"); | |
87f0e418 | 1123 | } |
87f0e418 | 1124 | |
7e6e7b06 LP |
1125 | } else |
1126 | unexpected = true; | |
1127 | ||
9f611ad8 LP |
1128 | /* If this state change happened without being requested by a |
1129 | * job, then let's retroactively start or stop | |
1130 | * dependencies. We skip that step when deserializing, since | |
1131 | * we don't want to create any additional jobs just because | |
1132 | * something is already activated. */ | |
1133 | ||
1134 | if (unexpected && u->meta.manager->n_deserializing <= 0) { | |
5ed9f5d6 | 1135 | if (UNIT_IS_INACTIVE_OR_FAILED(os) && UNIT_IS_ACTIVE_OR_ACTIVATING(ns)) |
7e6e7b06 LP |
1136 | retroactively_start_dependencies(u); |
1137 | else if (UNIT_IS_ACTIVE_OR_ACTIVATING(os) && UNIT_IS_INACTIVE_OR_DEACTIVATING(ns)) | |
1138 | retroactively_stop_dependencies(u); | |
a096ed36 | 1139 | } |
f3bff0eb | 1140 | |
fdf20a31 | 1141 | if (ns != os && ns == UNIT_FAILED) { |
5de9682c LP |
1142 | Iterator i; |
1143 | Unit *other; | |
1144 | ||
1145 | SET_FOREACH(other, u->meta.dependencies[UNIT_ON_FAILURE], i) | |
1146 | manager_add_job(u->meta.manager, JOB_START, other, JOB_REPLACE, true, NULL, NULL); | |
1147 | ||
fdf20a31 | 1148 | log_notice("Unit %s entered failed state.", u->meta.id); |
5de9682c LP |
1149 | } |
1150 | ||
e537352b LP |
1151 | /* Some names are special */ |
1152 | if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) { | |
4927fcae | 1153 | if (unit_has_name(u, SPECIAL_DBUS_SERVICE)) |
e537352b LP |
1154 | /* The bus just might have become available, |
1155 | * hence try to connect to it, if we aren't | |
1156 | * yet connected. */ | |
5e8d1c9a | 1157 | bus_init(u->meta.manager); |
f278026d | 1158 | |
e537352b LP |
1159 | if (unit_has_name(u, SPECIAL_SYSLOG_SERVICE)) |
1160 | /* The syslog daemon just might have become | |
1161 | * available, hence try to connect to it, if | |
1162 | * we aren't yet connected. */ | |
843d2643 | 1163 | log_open(); |
f278026d | 1164 | |
4927fcae | 1165 | if (u->meta.type == UNIT_SERVICE && |
cd6d0a45 | 1166 | !UNIT_IS_ACTIVE_OR_RELOADING(os)) { |
4927fcae LP |
1167 | /* Write audit record if we have just finished starting up */ |
1168 | manager_send_unit_audit(u->meta.manager, u, AUDIT_SERVICE_START, 1); | |
cd6d0a45 LP |
1169 | u->meta.in_audit = true; |
1170 | } | |
e537352b | 1171 | |
4927fcae | 1172 | } else { |
f278026d LP |
1173 | |
1174 | if (unit_has_name(u, SPECIAL_SYSLOG_SERVICE)) | |
e537352b LP |
1175 | /* The syslog daemon might just have |
1176 | * terminated, hence try to disconnect from | |
1177 | * it. */ | |
2882c7ed | 1178 | log_close_syslog(); |
f278026d LP |
1179 | |
1180 | /* We don't care about D-Bus here, since we'll get an | |
1181 | * asynchronous notification for it anyway. */ | |
4927fcae LP |
1182 | |
1183 | if (u->meta.type == UNIT_SERVICE && | |
fdf20a31 MM |
1184 | UNIT_IS_INACTIVE_OR_FAILED(ns) && |
1185 | !UNIT_IS_INACTIVE_OR_FAILED(os)) { | |
cd6d0a45 LP |
1186 | |
1187 | /* Hmm, if there was no start record written | |
1188 | * write it now, so that we always have a nice | |
1189 | * pair */ | |
1190 | if (!u->meta.in_audit) { | |
1191 | manager_send_unit_audit(u->meta.manager, u, AUDIT_SERVICE_START, ns == UNIT_INACTIVE); | |
4927fcae | 1192 | |
cd6d0a45 LP |
1193 | if (ns == UNIT_INACTIVE) |
1194 | manager_send_unit_audit(u->meta.manager, u, AUDIT_SERVICE_STOP, true); | |
1195 | } else | |
1196 | /* Write audit record if we have just finished shutting down */ | |
1197 | manager_send_unit_audit(u->meta.manager, u, AUDIT_SERVICE_STOP, ns == UNIT_INACTIVE); | |
1198 | ||
1199 | u->meta.in_audit = false; | |
1200 | } | |
f278026d LP |
1201 | } |
1202 | ||
f3bff0eb LP |
1203 | /* Maybe we finished startup and are now ready for being |
1204 | * stopped because unneeded? */ | |
b4a16b7b | 1205 | unit_check_unneeded(u); |
c1e1601e LP |
1206 | |
1207 | unit_add_to_dbus_queue(u); | |
701cc384 | 1208 | unit_add_to_gc_queue(u); |
87f0e418 LP |
1209 | } |
1210 | ||
acbb0225 | 1211 | int unit_watch_fd(Unit *u, int fd, uint32_t events, Watch *w) { |
87f0e418 LP |
1212 | struct epoll_event ev; |
1213 | ||
1214 | assert(u); | |
1215 | assert(fd >= 0); | |
acbb0225 | 1216 | assert(w); |
ea430986 | 1217 | assert(w->type == WATCH_INVALID || (w->type == WATCH_FD && w->fd == fd && w->data.unit == u)); |
87f0e418 LP |
1218 | |
1219 | zero(ev); | |
acbb0225 | 1220 | ev.data.ptr = w; |
87f0e418 LP |
1221 | ev.events = events; |
1222 | ||
acbb0225 LP |
1223 | if (epoll_ctl(u->meta.manager->epoll_fd, |
1224 | w->type == WATCH_INVALID ? EPOLL_CTL_ADD : EPOLL_CTL_MOD, | |
1225 | fd, | |
1226 | &ev) < 0) | |
1227 | return -errno; | |
87f0e418 | 1228 | |
acbb0225 LP |
1229 | w->fd = fd; |
1230 | w->type = WATCH_FD; | |
ea430986 | 1231 | w->data.unit = u; |
87f0e418 | 1232 | |
acbb0225 | 1233 | return 0; |
87f0e418 LP |
1234 | } |
1235 | ||
acbb0225 | 1236 | void unit_unwatch_fd(Unit *u, Watch *w) { |
87f0e418 | 1237 | assert(u); |
acbb0225 | 1238 | assert(w); |
87f0e418 | 1239 | |
acbb0225 LP |
1240 | if (w->type == WATCH_INVALID) |
1241 | return; | |
1242 | ||
ea430986 LP |
1243 | assert(w->type == WATCH_FD); |
1244 | assert(w->data.unit == u); | |
acbb0225 LP |
1245 | assert_se(epoll_ctl(u->meta.manager->epoll_fd, EPOLL_CTL_DEL, w->fd, NULL) >= 0); |
1246 | ||
1247 | w->fd = -1; | |
1248 | w->type = WATCH_INVALID; | |
ea430986 | 1249 | w->data.unit = NULL; |
87f0e418 LP |
1250 | } |
1251 | ||
1252 | int unit_watch_pid(Unit *u, pid_t pid) { | |
1253 | assert(u); | |
1254 | assert(pid >= 1); | |
1255 | ||
05e343b7 LP |
1256 | /* Watch a specific PID. We only support one unit watching |
1257 | * each PID for now. */ | |
1258 | ||
c6c18be3 | 1259 | return hashmap_put(u->meta.manager->watch_pids, LONG_TO_PTR(pid), u); |
87f0e418 LP |
1260 | } |
1261 | ||
1262 | void unit_unwatch_pid(Unit *u, pid_t pid) { | |
1263 | assert(u); | |
1264 | assert(pid >= 1); | |
1265 | ||
c6c18be3 | 1266 | hashmap_remove_value(u->meta.manager->watch_pids, LONG_TO_PTR(pid), u); |
87f0e418 LP |
1267 | } |
1268 | ||
acbb0225 | 1269 | int unit_watch_timer(Unit *u, usec_t delay, Watch *w) { |
87f0e418 | 1270 | struct itimerspec its; |
acbb0225 | 1271 | int flags, fd; |
87f0e418 LP |
1272 | bool ours; |
1273 | ||
1274 | assert(u); | |
acbb0225 | 1275 | assert(w); |
faf919f1 | 1276 | assert(w->type == WATCH_INVALID || (w->type == WATCH_UNIT_TIMER && w->data.unit == u)); |
87f0e418 LP |
1277 | |
1278 | /* This will try to reuse the old timer if there is one */ | |
1279 | ||
faf919f1 LP |
1280 | if (w->type == WATCH_UNIT_TIMER) { |
1281 | assert(w->data.unit == u); | |
1282 | assert(w->fd >= 0); | |
1283 | ||
87f0e418 | 1284 | ours = false; |
acbb0225 | 1285 | fd = w->fd; |
faf919f1 LP |
1286 | } else if (w->type == WATCH_INVALID) { |
1287 | ||
87f0e418 | 1288 | ours = true; |
87f0e418 LP |
1289 | if ((fd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK|TFD_CLOEXEC)) < 0) |
1290 | return -errno; | |
faf919f1 LP |
1291 | } else |
1292 | assert_not_reached("Invalid watch type"); | |
87f0e418 LP |
1293 | |
1294 | zero(its); | |
1295 | ||
1296 | if (delay <= 0) { | |
1297 | /* Set absolute time in the past, but not 0, since we | |
1298 | * don't want to disarm the timer */ | |
1299 | its.it_value.tv_sec = 0; | |
1300 | its.it_value.tv_nsec = 1; | |
1301 | ||
1302 | flags = TFD_TIMER_ABSTIME; | |
1303 | } else { | |
1304 | timespec_store(&its.it_value, delay); | |
1305 | flags = 0; | |
1306 | } | |
1307 | ||
1308 | /* This will also flush the elapse counter */ | |
1309 | if (timerfd_settime(fd, flags, &its, NULL) < 0) | |
1310 | goto fail; | |
1311 | ||
acbb0225 LP |
1312 | if (w->type == WATCH_INVALID) { |
1313 | struct epoll_event ev; | |
87f0e418 | 1314 | |
acbb0225 LP |
1315 | zero(ev); |
1316 | ev.data.ptr = w; | |
f94ea366 | 1317 | ev.events = EPOLLIN; |
acbb0225 LP |
1318 | |
1319 | if (epoll_ctl(u->meta.manager->epoll_fd, EPOLL_CTL_ADD, fd, &ev) < 0) | |
1320 | goto fail; | |
1321 | } | |
1322 | ||
faf919f1 | 1323 | w->type = WATCH_UNIT_TIMER; |
acbb0225 | 1324 | w->fd = fd; |
ea430986 | 1325 | w->data.unit = u; |
87f0e418 | 1326 | |
87f0e418 LP |
1327 | return 0; |
1328 | ||
1329 | fail: | |
1330 | if (ours) | |
ea430986 | 1331 | close_nointr_nofail(fd); |
87f0e418 LP |
1332 | |
1333 | return -errno; | |
1334 | } | |
1335 | ||
acbb0225 | 1336 | void unit_unwatch_timer(Unit *u, Watch *w) { |
87f0e418 | 1337 | assert(u); |
acbb0225 | 1338 | assert(w); |
87f0e418 | 1339 | |
acbb0225 | 1340 | if (w->type == WATCH_INVALID) |
87f0e418 LP |
1341 | return; |
1342 | ||
faf919f1 LP |
1343 | assert(w->type == WATCH_UNIT_TIMER); |
1344 | assert(w->data.unit == u); | |
1345 | assert(w->fd >= 0); | |
acbb0225 LP |
1346 | |
1347 | assert_se(epoll_ctl(u->meta.manager->epoll_fd, EPOLL_CTL_DEL, w->fd, NULL) >= 0); | |
a16e1123 | 1348 | close_nointr_nofail(w->fd); |
acbb0225 LP |
1349 | |
1350 | w->fd = -1; | |
1351 | w->type = WATCH_INVALID; | |
ea430986 | 1352 | w->data.unit = NULL; |
87f0e418 LP |
1353 | } |
1354 | ||
1355 | bool unit_job_is_applicable(Unit *u, JobType j) { | |
1356 | assert(u); | |
1357 | assert(j >= 0 && j < _JOB_TYPE_MAX); | |
1358 | ||
1359 | switch (j) { | |
1360 | ||
1361 | case JOB_VERIFY_ACTIVE: | |
1362 | case JOB_START: | |
1363 | return true; | |
1364 | ||
1365 | case JOB_STOP: | |
1366 | case JOB_RESTART: | |
1367 | case JOB_TRY_RESTART: | |
1368 | return unit_can_start(u); | |
1369 | ||
1370 | case JOB_RELOAD: | |
1371 | return unit_can_reload(u); | |
1372 | ||
1373 | case JOB_RELOAD_OR_START: | |
1374 | return unit_can_reload(u) && unit_can_start(u); | |
1375 | ||
1376 | default: | |
1377 | assert_not_reached("Invalid job type"); | |
1378 | } | |
1379 | } | |
1380 | ||
701cc384 | 1381 | int unit_add_dependency(Unit *u, UnitDependency d, Unit *other, bool add_reference) { |
87f0e418 LP |
1382 | |
1383 | static const UnitDependency inverse_table[_UNIT_DEPENDENCY_MAX] = { | |
1384 | [UNIT_REQUIRES] = UNIT_REQUIRED_BY, | |
9e2f7c11 | 1385 | [UNIT_REQUIRES_OVERRIDABLE] = UNIT_REQUIRED_BY_OVERRIDABLE, |
87f0e418 LP |
1386 | [UNIT_WANTS] = UNIT_WANTED_BY, |
1387 | [UNIT_REQUISITE] = UNIT_REQUIRED_BY, | |
9e2f7c11 | 1388 | [UNIT_REQUISITE_OVERRIDABLE] = UNIT_REQUIRED_BY_OVERRIDABLE, |
87f0e418 | 1389 | [UNIT_REQUIRED_BY] = _UNIT_DEPENDENCY_INVALID, |
9e2f7c11 | 1390 | [UNIT_REQUIRED_BY_OVERRIDABLE] = _UNIT_DEPENDENCY_INVALID, |
87f0e418 | 1391 | [UNIT_WANTED_BY] = _UNIT_DEPENDENCY_INVALID, |
69dd2852 LP |
1392 | [UNIT_CONFLICTS] = UNIT_CONFLICTED_BY, |
1393 | [UNIT_CONFLICTED_BY] = UNIT_CONFLICTS, | |
87f0e418 | 1394 | [UNIT_BEFORE] = UNIT_AFTER, |
701cc384 | 1395 | [UNIT_AFTER] = UNIT_BEFORE, |
5de9682c | 1396 | [UNIT_ON_FAILURE] = _UNIT_DEPENDENCY_INVALID, |
701cc384 LP |
1397 | [UNIT_REFERENCES] = UNIT_REFERENCED_BY, |
1398 | [UNIT_REFERENCED_BY] = UNIT_REFERENCES | |
87f0e418 | 1399 | }; |
701cc384 | 1400 | int r, q = 0, v = 0, w = 0; |
87f0e418 LP |
1401 | |
1402 | assert(u); | |
1403 | assert(d >= 0 && d < _UNIT_DEPENDENCY_MAX); | |
87f0e418 LP |
1404 | assert(other); |
1405 | ||
9f151f29 LP |
1406 | u = unit_follow_merge(u); |
1407 | other = unit_follow_merge(other); | |
1408 | ||
87f0e418 LP |
1409 | /* We won't allow dependencies on ourselves. We will not |
1410 | * consider them an error however. */ | |
1411 | if (u == other) | |
1412 | return 0; | |
1413 | ||
9e2f7c11 LP |
1414 | if (UNIT_VTABLE(u)->no_requires && |
1415 | (d == UNIT_REQUIRES || | |
1416 | d == UNIT_REQUIRES_OVERRIDABLE || | |
1417 | d == UNIT_REQUISITE || | |
1418 | d == UNIT_REQUISITE_OVERRIDABLE)) { | |
1419 | return -EINVAL; | |
1420 | } | |
1421 | ||
5de9682c | 1422 | if ((r = set_ensure_allocated(&u->meta.dependencies[d], trivial_hash_func, trivial_compare_func)) < 0) |
87f0e418 LP |
1423 | return r; |
1424 | ||
5de9682c LP |
1425 | if (inverse_table[d] != _UNIT_DEPENDENCY_INVALID) |
1426 | if ((r = set_ensure_allocated(&other->meta.dependencies[inverse_table[d]], trivial_hash_func, trivial_compare_func)) < 0) | |
1427 | return r; | |
1428 | ||
701cc384 LP |
1429 | if (add_reference) |
1430 | if ((r = set_ensure_allocated(&u->meta.dependencies[UNIT_REFERENCES], trivial_hash_func, trivial_compare_func)) < 0 || | |
1431 | (r = set_ensure_allocated(&other->meta.dependencies[UNIT_REFERENCED_BY], trivial_hash_func, trivial_compare_func)) < 0) | |
1432 | return r; | |
87f0e418 | 1433 | |
701cc384 LP |
1434 | if ((q = set_put(u->meta.dependencies[d], other)) < 0) |
1435 | return q; | |
87f0e418 | 1436 | |
5de9682c LP |
1437 | if (inverse_table[d] != _UNIT_DEPENDENCY_INVALID) |
1438 | if ((v = set_put(other->meta.dependencies[inverse_table[d]], u)) < 0) { | |
1439 | r = v; | |
1440 | goto fail; | |
1441 | } | |
701cc384 LP |
1442 | |
1443 | if (add_reference) { | |
1444 | if ((w = set_put(u->meta.dependencies[UNIT_REFERENCES], other)) < 0) { | |
1445 | r = w; | |
1446 | goto fail; | |
1447 | } | |
1448 | ||
1449 | if ((r = set_put(other->meta.dependencies[UNIT_REFERENCED_BY], u)) < 0) | |
1450 | goto fail; | |
87f0e418 LP |
1451 | } |
1452 | ||
c1e1601e | 1453 | unit_add_to_dbus_queue(u); |
87f0e418 | 1454 | return 0; |
701cc384 LP |
1455 | |
1456 | fail: | |
1457 | if (q > 0) | |
1458 | set_remove(u->meta.dependencies[d], other); | |
1459 | ||
1460 | if (v > 0) | |
1461 | set_remove(other->meta.dependencies[inverse_table[d]], u); | |
1462 | ||
1463 | if (w > 0) | |
1464 | set_remove(u->meta.dependencies[UNIT_REFERENCES], other); | |
1465 | ||
1466 | return r; | |
87f0e418 | 1467 | } |
0301abf4 | 1468 | |
2c966c03 LP |
1469 | int unit_add_two_dependencies(Unit *u, UnitDependency d, UnitDependency e, Unit *other, bool add_reference) { |
1470 | int r; | |
1471 | ||
1472 | assert(u); | |
1473 | ||
1474 | if ((r = unit_add_dependency(u, d, other, add_reference)) < 0) | |
1475 | return r; | |
1476 | ||
1477 | if ((r = unit_add_dependency(u, e, other, add_reference)) < 0) | |
1478 | return r; | |
1479 | ||
1480 | return 0; | |
1481 | } | |
1482 | ||
9e2f7c11 LP |
1483 | static const char *resolve_template(Unit *u, const char *name, const char*path, char **p) { |
1484 | char *s; | |
1485 | ||
1486 | assert(u); | |
1487 | assert(name || path); | |
1488 | ||
1489 | if (!name) | |
1490 | name = file_name_from_path(path); | |
1491 | ||
1492 | if (!unit_name_is_template(name)) { | |
1493 | *p = NULL; | |
1494 | return name; | |
1495 | } | |
1496 | ||
1497 | if (u->meta.instance) | |
1498 | s = unit_name_replace_instance(name, u->meta.instance); | |
1499 | else { | |
1500 | char *i; | |
1501 | ||
1502 | if (!(i = unit_name_to_prefix(u->meta.id))) | |
1503 | return NULL; | |
1504 | ||
1505 | s = unit_name_replace_instance(name, i); | |
1506 | free(i); | |
1507 | } | |
1508 | ||
1509 | if (!s) | |
1510 | return NULL; | |
1511 | ||
1512 | *p = s; | |
1513 | return s; | |
1514 | } | |
1515 | ||
701cc384 | 1516 | int unit_add_dependency_by_name(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) { |
09b6b09f LP |
1517 | Unit *other; |
1518 | int r; | |
9e2f7c11 | 1519 | char *s; |
09b6b09f | 1520 | |
9e2f7c11 LP |
1521 | assert(u); |
1522 | assert(name || path); | |
09b6b09f | 1523 | |
9e2f7c11 LP |
1524 | if (!(name = resolve_template(u, name, path, &s))) |
1525 | return -ENOMEM; | |
09b6b09f | 1526 | |
398ef8ba | 1527 | if ((r = manager_load_unit(u->meta.manager, name, path, NULL, &other)) < 0) |
9e2f7c11 LP |
1528 | goto finish; |
1529 | ||
701cc384 | 1530 | r = unit_add_dependency(u, d, other, add_reference); |
9e2f7c11 LP |
1531 | |
1532 | finish: | |
1533 | free(s); | |
1534 | return r; | |
09b6b09f LP |
1535 | } |
1536 | ||
2c966c03 LP |
1537 | int unit_add_two_dependencies_by_name(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference) { |
1538 | Unit *other; | |
1539 | int r; | |
1540 | char *s; | |
1541 | ||
1542 | assert(u); | |
1543 | assert(name || path); | |
1544 | ||
1545 | if (!(name = resolve_template(u, name, path, &s))) | |
1546 | return -ENOMEM; | |
1547 | ||
398ef8ba | 1548 | if ((r = manager_load_unit(u->meta.manager, name, path, NULL, &other)) < 0) |
2c966c03 LP |
1549 | goto finish; |
1550 | ||
1551 | r = unit_add_two_dependencies(u, d, e, other, add_reference); | |
1552 | ||
1553 | finish: | |
1554 | free(s); | |
1555 | return r; | |
1556 | } | |
1557 | ||
701cc384 | 1558 | int unit_add_dependency_by_name_inverse(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) { |
bd77d0fc LP |
1559 | Unit *other; |
1560 | int r; | |
9e2f7c11 | 1561 | char *s; |
bd77d0fc | 1562 | |
9e2f7c11 LP |
1563 | assert(u); |
1564 | assert(name || path); | |
bd77d0fc | 1565 | |
9e2f7c11 LP |
1566 | if (!(name = resolve_template(u, name, path, &s))) |
1567 | return -ENOMEM; | |
bd77d0fc | 1568 | |
398ef8ba | 1569 | if ((r = manager_load_unit(u->meta.manager, name, path, NULL, &other)) < 0) |
9e2f7c11 LP |
1570 | goto finish; |
1571 | ||
701cc384 | 1572 | r = unit_add_dependency(other, d, u, add_reference); |
9e2f7c11 LP |
1573 | |
1574 | finish: | |
1575 | free(s); | |
1576 | return r; | |
bd77d0fc LP |
1577 | } |
1578 | ||
2c966c03 LP |
1579 | int unit_add_two_dependencies_by_name_inverse(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference) { |
1580 | Unit *other; | |
1581 | int r; | |
1582 | char *s; | |
1583 | ||
1584 | assert(u); | |
1585 | assert(name || path); | |
1586 | ||
1587 | if (!(name = resolve_template(u, name, path, &s))) | |
1588 | return -ENOMEM; | |
1589 | ||
398ef8ba | 1590 | if ((r = manager_load_unit(u->meta.manager, name, path, NULL, &other)) < 0) |
2c966c03 LP |
1591 | goto finish; |
1592 | ||
1593 | if ((r = unit_add_two_dependencies(other, d, e, u, add_reference)) < 0) | |
1594 | goto finish; | |
1595 | ||
1596 | finish: | |
1597 | free(s); | |
1598 | return r; | |
1599 | } | |
1600 | ||
0301abf4 LP |
1601 | int set_unit_path(const char *p) { |
1602 | char *cwd, *c; | |
1603 | int r; | |
1604 | ||
1605 | /* This is mostly for debug purposes */ | |
1606 | ||
1607 | if (path_is_absolute(p)) { | |
1608 | if (!(c = strdup(p))) | |
1609 | return -ENOMEM; | |
1610 | } else { | |
1611 | if (!(cwd = get_current_dir_name())) | |
1612 | return -errno; | |
1613 | ||
1614 | r = asprintf(&c, "%s/%s", cwd, p); | |
1615 | free(cwd); | |
1616 | ||
1617 | if (r < 0) | |
1618 | return -ENOMEM; | |
1619 | } | |
1620 | ||
036643a2 | 1621 | if (setenv("SYSTEMD_UNIT_PATH", c, 0) < 0) { |
0301abf4 LP |
1622 | r = -errno; |
1623 | free(c); | |
1624 | return r; | |
1625 | } | |
1626 | ||
1627 | return 0; | |
1628 | } | |
88066b3a | 1629 | |
ea430986 LP |
1630 | char *unit_dbus_path(Unit *u) { |
1631 | char *p, *e; | |
1632 | ||
1633 | assert(u); | |
1634 | ||
04ade7d2 LP |
1635 | if (!u->meta.id) |
1636 | return NULL; | |
1637 | ||
9e2f7c11 | 1638 | if (!(e = bus_path_escape(u->meta.id))) |
ea430986 LP |
1639 | return NULL; |
1640 | ||
35d2e7ec | 1641 | p = strappend("/org/freedesktop/systemd1/unit/", e); |
ea430986 | 1642 | free(e); |
35d2e7ec | 1643 | |
ea430986 LP |
1644 | return p; |
1645 | } | |
1646 | ||
8e274523 LP |
1647 | int unit_add_cgroup(Unit *u, CGroupBonding *b) { |
1648 | CGroupBonding *l; | |
1649 | int r; | |
1650 | ||
1651 | assert(u); | |
1652 | assert(b); | |
35d2e7ec | 1653 | |
8e274523 LP |
1654 | assert(b->path); |
1655 | ||
35d2e7ec LP |
1656 | if (!b->controller) |
1657 | if (!(b->controller = strdup(SYSTEMD_CGROUP_CONTROLLER))) | |
1658 | return -ENOMEM; | |
1659 | ||
8e274523 LP |
1660 | /* Ensure this hasn't been added yet */ |
1661 | assert(!b->unit); | |
1662 | ||
1663 | l = hashmap_get(u->meta.manager->cgroup_bondings, b->path); | |
1664 | LIST_PREPEND(CGroupBonding, by_path, l, b); | |
1665 | ||
1666 | if ((r = hashmap_replace(u->meta.manager->cgroup_bondings, b->path, l)) < 0) { | |
1667 | LIST_REMOVE(CGroupBonding, by_path, l, b); | |
1668 | return r; | |
1669 | } | |
1670 | ||
1671 | LIST_PREPEND(CGroupBonding, by_unit, u->meta.cgroup_bondings, b); | |
1672 | b->unit = u; | |
1673 | ||
1674 | return 0; | |
1675 | } | |
1676 | ||
013b87c0 LP |
1677 | static char *default_cgroup_path(Unit *u) { |
1678 | char *p; | |
4f2d528d | 1679 | int r; |
013b87c0 LP |
1680 | |
1681 | assert(u); | |
1682 | ||
4f2d528d LP |
1683 | if (u->meta.instance) { |
1684 | char *t; | |
013b87c0 | 1685 | |
4f2d528d LP |
1686 | if (!(t = unit_name_template(u->meta.id))) |
1687 | return NULL; | |
1688 | ||
1689 | r = asprintf(&p, "%s/%s/%s", u->meta.manager->cgroup_hierarchy, t, u->meta.instance); | |
1690 | free(t); | |
1691 | } else | |
1692 | r = asprintf(&p, "%s/%s", u->meta.manager->cgroup_hierarchy, u->meta.id); | |
1693 | ||
1694 | return r < 0 ? NULL : p; | |
013b87c0 LP |
1695 | } |
1696 | ||
8e274523 | 1697 | int unit_add_cgroup_from_text(Unit *u, const char *name) { |
013b87c0 LP |
1698 | char *controller = NULL, *path = NULL; |
1699 | CGroupBonding *b = NULL; | |
8e274523 LP |
1700 | int r; |
1701 | ||
1702 | assert(u); | |
1703 | assert(name); | |
1704 | ||
35d2e7ec LP |
1705 | if ((r = cg_split_spec(name, &controller, &path)) < 0) |
1706 | return r; | |
8e274523 | 1707 | |
35d2e7ec LP |
1708 | if (!path) |
1709 | path = default_cgroup_path(u); | |
013b87c0 | 1710 | |
35d2e7ec | 1711 | if (!controller) |
55096547 | 1712 | controller = strdup(SYSTEMD_CGROUP_CONTROLLER); |
013b87c0 | 1713 | |
35d2e7ec LP |
1714 | if (!path || !controller) { |
1715 | free(path); | |
1716 | free(controller); | |
1717 | ||
1718 | return -ENOMEM; | |
8e274523 LP |
1719 | } |
1720 | ||
013b87c0 LP |
1721 | if (cgroup_bonding_find_list(u->meta.cgroup_bondings, controller)) { |
1722 | r = -EEXIST; | |
1723 | goto fail; | |
1724 | } | |
8e274523 | 1725 | |
013b87c0 | 1726 | if (!(b = new0(CGroupBonding, 1))) { |
8e274523 LP |
1727 | r = -ENOMEM; |
1728 | goto fail; | |
1729 | } | |
1730 | ||
013b87c0 LP |
1731 | b->controller = controller; |
1732 | b->path = path; | |
8e274523 LP |
1733 | b->only_us = false; |
1734 | b->clean_up = false; | |
1735 | ||
1736 | if ((r = unit_add_cgroup(u, b)) < 0) | |
1737 | goto fail; | |
1738 | ||
1739 | return 0; | |
1740 | ||
1741 | fail: | |
013b87c0 LP |
1742 | free(path); |
1743 | free(controller); | |
8e274523 LP |
1744 | free(b); |
1745 | ||
1746 | return r; | |
1747 | } | |
1748 | ||
1749 | int unit_add_default_cgroup(Unit *u) { | |
1750 | CGroupBonding *b; | |
1751 | int r = -ENOMEM; | |
1752 | ||
1753 | assert(u); | |
1754 | ||
1755 | /* Adds in the default cgroup data, if it wasn't specified yet */ | |
1756 | ||
1757 | if (unit_get_default_cgroup(u)) | |
1758 | return 0; | |
1759 | ||
1760 | if (!(b = new0(CGroupBonding, 1))) | |
1761 | return -ENOMEM; | |
1762 | ||
013b87c0 | 1763 | if (!(b->path = default_cgroup_path(u))) |
8e274523 LP |
1764 | goto fail; |
1765 | ||
1766 | b->clean_up = true; | |
1767 | b->only_us = true; | |
1768 | ||
1769 | if ((r = unit_add_cgroup(u, b)) < 0) | |
1770 | goto fail; | |
1771 | ||
1772 | return 0; | |
1773 | ||
1774 | fail: | |
1775 | free(b->path); | |
1776 | free(b->controller); | |
1777 | free(b); | |
1778 | ||
1779 | return r; | |
1780 | } | |
1781 | ||
1782 | CGroupBonding* unit_get_default_cgroup(Unit *u) { | |
1783 | assert(u); | |
1784 | ||
55096547 | 1785 | return cgroup_bonding_find_list(u->meta.cgroup_bondings, SYSTEMD_CGROUP_CONTROLLER); |
8e274523 LP |
1786 | } |
1787 | ||
f6ff8c29 LP |
1788 | int unit_load_related_unit(Unit *u, const char *type, Unit **_found) { |
1789 | char *t; | |
1790 | int r; | |
1791 | ||
1792 | assert(u); | |
1793 | assert(type); | |
1794 | assert(_found); | |
1795 | ||
9e2f7c11 | 1796 | if (!(t = unit_name_change_suffix(u->meta.id, type))) |
f6ff8c29 LP |
1797 | return -ENOMEM; |
1798 | ||
1799 | assert(!unit_has_name(u, t)); | |
1800 | ||
398ef8ba | 1801 | r = manager_load_unit(u->meta.manager, t, NULL, NULL, _found); |
f6ff8c29 LP |
1802 | free(t); |
1803 | ||
9e2f7c11 | 1804 | assert(r < 0 || *_found != u); |
f6ff8c29 LP |
1805 | |
1806 | return r; | |
1807 | } | |
1808 | ||
a16e1123 LP |
1809 | int unit_get_related_unit(Unit *u, const char *type, Unit **_found) { |
1810 | Unit *found; | |
1811 | char *t; | |
1812 | ||
1813 | assert(u); | |
1814 | assert(type); | |
1815 | assert(_found); | |
1816 | ||
1817 | if (!(t = unit_name_change_suffix(u->meta.id, type))) | |
1818 | return -ENOMEM; | |
1819 | ||
1820 | assert(!unit_has_name(u, t)); | |
1821 | ||
1822 | found = manager_get_unit(u->meta.manager, t); | |
1823 | free(t); | |
1824 | ||
1825 | if (!found) | |
1826 | return -ENOENT; | |
1827 | ||
1828 | *_found = found; | |
1829 | return 0; | |
1830 | } | |
1831 | ||
9e2f7c11 LP |
1832 | static char *specifier_prefix_and_instance(char specifier, void *data, void *userdata) { |
1833 | Unit *u = userdata; | |
1834 | assert(u); | |
1835 | ||
1836 | return unit_name_to_prefix_and_instance(u->meta.id); | |
1837 | } | |
1838 | ||
1839 | static char *specifier_prefix(char specifier, void *data, void *userdata) { | |
1840 | Unit *u = userdata; | |
1841 | assert(u); | |
1842 | ||
1843 | return unit_name_to_prefix(u->meta.id); | |
1844 | } | |
1845 | ||
1846 | static char *specifier_prefix_unescaped(char specifier, void *data, void *userdata) { | |
1847 | Unit *u = userdata; | |
1848 | char *p, *r; | |
1849 | ||
1850 | assert(u); | |
1851 | ||
1852 | if (!(p = unit_name_to_prefix(u->meta.id))) | |
1853 | return NULL; | |
1854 | ||
1855 | r = unit_name_unescape(p); | |
1856 | free(p); | |
1857 | ||
1858 | return r; | |
1859 | } | |
1860 | ||
1861 | static char *specifier_instance_unescaped(char specifier, void *data, void *userdata) { | |
1862 | Unit *u = userdata; | |
1863 | assert(u); | |
1864 | ||
1865 | if (u->meta.instance) | |
1866 | return unit_name_unescape(u->meta.instance); | |
1867 | ||
1868 | return strdup(""); | |
1869 | } | |
1870 | ||
1871 | char *unit_name_printf(Unit *u, const char* format) { | |
1872 | ||
1873 | /* | |
1874 | * This will use the passed string as format string and | |
1875 | * replace the following specifiers: | |
1876 | * | |
1877 | * %n: the full id of the unit (foo@bar.waldo) | |
1878 | * %N: the id of the unit without the suffix (foo@bar) | |
1879 | * %p: the prefix (foo) | |
1880 | * %i: the instance (bar) | |
1881 | */ | |
1882 | ||
1883 | const Specifier table[] = { | |
1884 | { 'n', specifier_string, u->meta.id }, | |
1885 | { 'N', specifier_prefix_and_instance, NULL }, | |
1886 | { 'p', specifier_prefix, NULL }, | |
1887 | { 'i', specifier_string, u->meta.instance }, | |
1888 | { 0, NULL, NULL } | |
1889 | }; | |
1890 | ||
1891 | assert(u); | |
1892 | assert(format); | |
1893 | ||
1894 | return specifier_printf(format, table, u); | |
1895 | } | |
1896 | ||
1897 | char *unit_full_printf(Unit *u, const char *format) { | |
1898 | ||
1899 | /* This is similar to unit_name_printf() but also supports | |
1900 | * unescaping */ | |
1901 | ||
1902 | const Specifier table[] = { | |
1903 | { 'n', specifier_string, u->meta.id }, | |
1904 | { 'N', specifier_prefix_and_instance, NULL }, | |
1905 | { 'p', specifier_prefix, NULL }, | |
1906 | { 'P', specifier_prefix_unescaped, NULL }, | |
1907 | { 'i', specifier_string, u->meta.instance }, | |
1908 | { 'I', specifier_instance_unescaped, NULL }, | |
1909 | { 0, NULL, NULL } | |
1910 | }; | |
1911 | ||
1912 | assert(u); | |
1913 | assert(format); | |
1914 | ||
1915 | return specifier_printf(format, table, u); | |
1916 | } | |
1917 | ||
1918 | char **unit_full_printf_strv(Unit *u, char **l) { | |
1919 | size_t n; | |
1920 | char **r, **i, **j; | |
1921 | ||
1922 | /* Applies unit_full_printf to every entry in l */ | |
1923 | ||
1924 | assert(u); | |
1925 | ||
1926 | n = strv_length(l); | |
1927 | if (!(r = new(char*, n+1))) | |
1928 | return NULL; | |
1929 | ||
1930 | for (i = l, j = r; *i; i++, j++) | |
1931 | if (!(*j = unit_full_printf(u, *i))) | |
1932 | goto fail; | |
1933 | ||
1934 | *j = NULL; | |
1935 | return r; | |
1936 | ||
1937 | fail: | |
1938 | j--; | |
1939 | while (j >= r) | |
1940 | free(*j); | |
1941 | ||
1942 | free(r); | |
1943 | ||
1944 | return NULL; | |
1945 | } | |
1946 | ||
05e343b7 LP |
1947 | int unit_watch_bus_name(Unit *u, const char *name) { |
1948 | assert(u); | |
1949 | assert(name); | |
1950 | ||
1951 | /* Watch a specific name on the bus. We only support one unit | |
1952 | * watching each name for now. */ | |
1953 | ||
1954 | return hashmap_put(u->meta.manager->watch_bus, name, u); | |
1955 | } | |
1956 | ||
1957 | void unit_unwatch_bus_name(Unit *u, const char *name) { | |
1958 | assert(u); | |
1959 | assert(name); | |
1960 | ||
1961 | hashmap_remove_value(u->meta.manager->watch_bus, name, u); | |
1962 | } | |
1963 | ||
a16e1123 LP |
1964 | bool unit_can_serialize(Unit *u) { |
1965 | assert(u); | |
1966 | ||
1967 | return UNIT_VTABLE(u)->serialize && UNIT_VTABLE(u)->deserialize_item; | |
1968 | } | |
1969 | ||
1970 | int unit_serialize(Unit *u, FILE *f, FDSet *fds) { | |
1971 | int r; | |
1972 | ||
1973 | assert(u); | |
1974 | assert(f); | |
1975 | assert(fds); | |
1976 | ||
1977 | if (!unit_can_serialize(u)) | |
1978 | return 0; | |
1979 | ||
1980 | if ((r = UNIT_VTABLE(u)->serialize(u, f, fds)) < 0) | |
1981 | return r; | |
1982 | ||
cca098b0 LP |
1983 | if (u->meta.job) |
1984 | unit_serialize_item(u, f, "job", job_type_to_string(u->meta.job->type)); | |
1985 | ||
a16e1123 LP |
1986 | /* End marker */ |
1987 | fputc('\n', f); | |
1988 | return 0; | |
1989 | } | |
1990 | ||
1991 | void unit_serialize_item_format(Unit *u, FILE *f, const char *key, const char *format, ...) { | |
1992 | va_list ap; | |
1993 | ||
1994 | assert(u); | |
1995 | assert(f); | |
1996 | assert(key); | |
1997 | assert(format); | |
1998 | ||
1999 | fputs(key, f); | |
2000 | fputc('=', f); | |
2001 | ||
2002 | va_start(ap, format); | |
2003 | vfprintf(f, format, ap); | |
2004 | va_end(ap); | |
2005 | ||
2006 | fputc('\n', f); | |
2007 | } | |
2008 | ||
2009 | void unit_serialize_item(Unit *u, FILE *f, const char *key, const char *value) { | |
2010 | assert(u); | |
2011 | assert(f); | |
2012 | assert(key); | |
2013 | assert(value); | |
2014 | ||
2015 | fprintf(f, "%s=%s\n", key, value); | |
2016 | } | |
2017 | ||
2018 | int unit_deserialize(Unit *u, FILE *f, FDSet *fds) { | |
2019 | int r; | |
2020 | ||
2021 | assert(u); | |
2022 | assert(f); | |
2023 | assert(fds); | |
2024 | ||
2025 | if (!unit_can_serialize(u)) | |
2026 | return 0; | |
2027 | ||
2028 | for (;;) { | |
2029 | char line[1024], *l, *v; | |
2030 | size_t k; | |
2031 | ||
2032 | if (!fgets(line, sizeof(line), f)) { | |
2033 | if (feof(f)) | |
2034 | return 0; | |
2035 | return -errno; | |
2036 | } | |
2037 | ||
10f8e83c | 2038 | char_array_0(line); |
a16e1123 LP |
2039 | l = strstrip(line); |
2040 | ||
2041 | /* End marker */ | |
2042 | if (l[0] == 0) | |
2043 | return 0; | |
2044 | ||
2045 | k = strcspn(l, "="); | |
2046 | ||
2047 | if (l[k] == '=') { | |
2048 | l[k] = 0; | |
2049 | v = l+k+1; | |
2050 | } else | |
2051 | v = l+k; | |
2052 | ||
cca098b0 LP |
2053 | if (streq(l, "job")) { |
2054 | JobType type; | |
2055 | ||
2056 | if ((type = job_type_from_string(v)) < 0) | |
2057 | log_debug("Failed to parse job type value %s", v); | |
2058 | else | |
2059 | u->meta.deserialized_job = type; | |
2060 | ||
2061 | continue; | |
2062 | } | |
2063 | ||
a16e1123 LP |
2064 | if ((r = UNIT_VTABLE(u)->deserialize_item(u, l, v, fds)) < 0) |
2065 | return r; | |
2066 | } | |
2067 | } | |
2068 | ||
6e2ef85b LP |
2069 | int unit_add_node_link(Unit *u, const char *what, bool wants) { |
2070 | Unit *device; | |
2071 | char *e; | |
2072 | int r; | |
2073 | ||
2074 | assert(u); | |
2075 | ||
2076 | if (!what) | |
2077 | return 0; | |
2078 | ||
2079 | /* Adds in links to the device node that this unit is based on */ | |
2080 | ||
8407a5d0 | 2081 | if (!is_device_path(what)) |
6e2ef85b LP |
2082 | return 0; |
2083 | ||
2084 | if (!(e = unit_name_build_escape(what+1, NULL, ".device"))) | |
2085 | return -ENOMEM; | |
2086 | ||
398ef8ba | 2087 | r = manager_load_unit(u->meta.manager, e, NULL, NULL, &device); |
6e2ef85b LP |
2088 | free(e); |
2089 | ||
2090 | if (r < 0) | |
2091 | return r; | |
2092 | ||
2c966c03 | 2093 | if ((r = unit_add_two_dependencies(u, UNIT_AFTER, UNIT_REQUIRES, device, true)) < 0) |
6e2ef85b LP |
2094 | return r; |
2095 | ||
2096 | if (wants) | |
2097 | if ((r = unit_add_dependency(device, UNIT_WANTS, u, false)) < 0) | |
2098 | return r; | |
2099 | ||
2100 | return 0; | |
2101 | } | |
a16e1123 | 2102 | |
cca098b0 LP |
2103 | int unit_coldplug(Unit *u) { |
2104 | int r; | |
2105 | ||
2106 | assert(u); | |
2107 | ||
2108 | if (UNIT_VTABLE(u)->coldplug) | |
2109 | if ((r = UNIT_VTABLE(u)->coldplug(u)) < 0) | |
2110 | return r; | |
2111 | ||
2112 | if (u->meta.deserialized_job >= 0) { | |
398ef8ba | 2113 | if ((r = manager_add_job(u->meta.manager, u->meta.deserialized_job, u, JOB_FAIL, false, NULL, NULL)) < 0) |
cca098b0 LP |
2114 | return r; |
2115 | ||
2116 | u->meta.deserialized_job = _JOB_TYPE_INVALID; | |
2117 | } | |
2118 | ||
2119 | return 0; | |
2120 | } | |
2121 | ||
9e58ff9c LP |
2122 | void unit_status_printf(Unit *u, const char *format, ...) { |
2123 | va_list ap; | |
2124 | ||
2125 | assert(u); | |
2126 | assert(format); | |
2127 | ||
2128 | if (!UNIT_VTABLE(u)->show_status) | |
2129 | return; | |
2130 | ||
2131 | if (u->meta.manager->running_as != MANAGER_SYSTEM) | |
2132 | return; | |
2133 | ||
2134 | if (!u->meta.manager->show_status) | |
2135 | return; | |
2136 | ||
2137 | if (!manager_is_booting_or_shutting_down(u->meta.manager)) | |
2138 | return; | |
2139 | ||
2140 | va_start(ap, format); | |
2141 | status_vprintf(format, ap); | |
2142 | va_end(ap); | |
2143 | } | |
2144 | ||
45fb0699 LP |
2145 | bool unit_need_daemon_reload(Unit *u) { |
2146 | struct stat st; | |
2147 | ||
2148 | assert(u); | |
2149 | ||
2150 | if (!u->meta.fragment_path) | |
2151 | return false; | |
2152 | ||
2153 | zero(st); | |
2154 | if (stat(u->meta.fragment_path, &st) < 0) | |
2155 | /* What, cannot access this anymore? */ | |
2156 | return true; | |
2157 | ||
2158 | return | |
2159 | u->meta.fragment_mtime && | |
2160 | timespec_load(&st.st_mtim) != u->meta.fragment_mtime; | |
2161 | } | |
2162 | ||
fdf20a31 | 2163 | void unit_reset_failed(Unit *u) { |
5632e374 LP |
2164 | assert(u); |
2165 | ||
fdf20a31 MM |
2166 | if (UNIT_VTABLE(u)->reset_failed) |
2167 | UNIT_VTABLE(u)->reset_failed(u); | |
5632e374 LP |
2168 | } |
2169 | ||
a7f241db LP |
2170 | Unit *unit_following(Unit *u) { |
2171 | assert(u); | |
2172 | ||
2173 | if (UNIT_VTABLE(u)->following) | |
2174 | return UNIT_VTABLE(u)->following(u); | |
2175 | ||
2176 | return NULL; | |
2177 | } | |
2178 | ||
18ffdfda LP |
2179 | bool unit_pending_inactive(Unit *u) { |
2180 | assert(u); | |
2181 | ||
2182 | /* Returns true if the unit is inactive or going down */ | |
2183 | ||
2184 | if (UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))) | |
2185 | return true; | |
2186 | ||
2187 | if (u->meta.job && u->meta.job->type == JOB_STOP) | |
2188 | return true; | |
2189 | ||
2190 | return false; | |
2191 | } | |
2192 | ||
f976f3f6 LP |
2193 | bool unit_pending_active(Unit *u) { |
2194 | assert(u); | |
2195 | ||
2196 | /* Returns true if the unit is inactive or going down */ | |
2197 | ||
2198 | if (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) | |
2199 | return true; | |
2200 | ||
2201 | if (u->meta.job && | |
2202 | (u->meta.job->type == JOB_START || | |
2203 | u->meta.job->type == JOB_RELOAD_OR_START || | |
2204 | u->meta.job->type == JOB_RESTART)) | |
2205 | return true; | |
2206 | ||
2207 | return false; | |
2208 | } | |
2209 | ||
71fad675 LP |
2210 | UnitType unit_name_to_type(const char *n) { |
2211 | UnitType t; | |
2212 | ||
2213 | assert(n); | |
2214 | ||
2215 | for (t = 0; t < _UNIT_TYPE_MAX; t++) | |
2216 | if (endswith(n, unit_vtable[t]->suffix)) | |
2217 | return t; | |
2218 | ||
2219 | return _UNIT_TYPE_INVALID; | |
2220 | } | |
2221 | ||
2222 | bool unit_name_is_valid(const char *n) { | |
2223 | UnitType t; | |
2224 | ||
2225 | t = unit_name_to_type(n); | |
2226 | if (t < 0 || t >= _UNIT_TYPE_MAX) | |
2227 | return false; | |
2228 | ||
2229 | return unit_name_is_valid_no_type(n); | |
2230 | } | |
2231 | ||
94f04347 LP |
2232 | static const char* const unit_load_state_table[_UNIT_LOAD_STATE_MAX] = { |
2233 | [UNIT_STUB] = "stub", | |
2234 | [UNIT_LOADED] = "loaded", | |
fdf20a31 | 2235 | [UNIT_ERROR] = "error", |
23a177ef | 2236 | [UNIT_MERGED] = "merged" |
94f04347 LP |
2237 | }; |
2238 | ||
2239 | DEFINE_STRING_TABLE_LOOKUP(unit_load_state, UnitLoadState); | |
2240 | ||
2241 | static const char* const unit_active_state_table[_UNIT_ACTIVE_STATE_MAX] = { | |
2242 | [UNIT_ACTIVE] = "active", | |
032ff4af | 2243 | [UNIT_RELOADING] = "reloading", |
94f04347 | 2244 | [UNIT_INACTIVE] = "inactive", |
fdf20a31 | 2245 | [UNIT_FAILED] = "failed", |
94f04347 LP |
2246 | [UNIT_ACTIVATING] = "activating", |
2247 | [UNIT_DEACTIVATING] = "deactivating" | |
2248 | }; | |
2249 | ||
2250 | DEFINE_STRING_TABLE_LOOKUP(unit_active_state, UnitActiveState); | |
2251 | ||
2252 | static const char* const unit_dependency_table[_UNIT_DEPENDENCY_MAX] = { | |
2253 | [UNIT_REQUIRES] = "Requires", | |
9e2f7c11 | 2254 | [UNIT_REQUIRES_OVERRIDABLE] = "RequiresOverridable", |
94f04347 LP |
2255 | [UNIT_WANTS] = "Wants", |
2256 | [UNIT_REQUISITE] = "Requisite", | |
9e2f7c11 | 2257 | [UNIT_REQUISITE_OVERRIDABLE] = "RequisiteOverridable", |
94f04347 | 2258 | [UNIT_REQUIRED_BY] = "RequiredBy", |
9e2f7c11 | 2259 | [UNIT_REQUIRED_BY_OVERRIDABLE] = "RequiredByOverridable", |
94f04347 LP |
2260 | [UNIT_WANTED_BY] = "WantedBy", |
2261 | [UNIT_CONFLICTS] = "Conflicts", | |
69dd2852 | 2262 | [UNIT_CONFLICTED_BY] = "ConflictedBy", |
94f04347 LP |
2263 | [UNIT_BEFORE] = "Before", |
2264 | [UNIT_AFTER] = "After", | |
701cc384 | 2265 | [UNIT_REFERENCES] = "References", |
5de9682c LP |
2266 | [UNIT_REFERENCED_BY] = "ReferencedBy", |
2267 | [UNIT_ON_FAILURE] = "OnFailure" | |
94f04347 LP |
2268 | }; |
2269 | ||
2270 | DEFINE_STRING_TABLE_LOOKUP(unit_dependency, UnitDependency); | |
50159e6a LP |
2271 | |
2272 | static const char* const kill_mode_table[_KILL_MODE_MAX] = { | |
80876c20 | 2273 | [KILL_CONTROL_GROUP] = "control-group", |
50159e6a | 2274 | [KILL_PROCESS_GROUP] = "process-group", |
80876c20 LP |
2275 | [KILL_PROCESS] = "process", |
2276 | [KILL_NONE] = "none" | |
50159e6a LP |
2277 | }; |
2278 | ||
2279 | DEFINE_STRING_TABLE_LOOKUP(kill_mode, KillMode); |