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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" |
ab1f0633 | 45 | #include "cgroup-attr.h" |
87f0e418 LP |
46 | |
47 | const UnitVTable * const unit_vtable[_UNIT_TYPE_MAX] = { | |
48 | [UNIT_SERVICE] = &service_vtable, | |
49 | [UNIT_TIMER] = &timer_vtable, | |
50 | [UNIT_SOCKET] = &socket_vtable, | |
51 | [UNIT_TARGET] = &target_vtable, | |
52 | [UNIT_DEVICE] = &device_vtable, | |
53 | [UNIT_MOUNT] = &mount_vtable, | |
54 | [UNIT_AUTOMOUNT] = &automount_vtable, | |
07b0b134 | 55 | [UNIT_SNAPSHOT] = &snapshot_vtable, |
01f78473 LP |
56 | [UNIT_SWAP] = &swap_vtable, |
57 | [UNIT_PATH] = &path_vtable | |
87f0e418 LP |
58 | }; |
59 | ||
87f0e418 LP |
60 | Unit *unit_new(Manager *m) { |
61 | Unit *u; | |
62 | ||
63 | assert(m); | |
64 | ||
65 | if (!(u = new0(Unit, 1))) | |
66 | return NULL; | |
67 | ||
68 | if (!(u->meta.names = set_new(string_hash_func, string_compare_func))) { | |
69 | free(u); | |
70 | return NULL; | |
71 | } | |
72 | ||
73 | u->meta.manager = m; | |
74 | u->meta.type = _UNIT_TYPE_INVALID; | |
cca098b0 | 75 | u->meta.deserialized_job = _JOB_TYPE_INVALID; |
a40eb732 | 76 | u->meta.default_dependencies = true; |
a4375746 | 77 | u->meta.unit_file_state = _UNIT_FILE_STATE_INVALID; |
87f0e418 LP |
78 | |
79 | return u; | |
80 | } | |
81 | ||
f278026d LP |
82 | bool unit_has_name(Unit *u, const char *name) { |
83 | assert(u); | |
84 | assert(name); | |
85 | ||
86 | return !!set_get(u->meta.names, (char*) name); | |
87 | } | |
88 | ||
87f0e418 LP |
89 | int unit_add_name(Unit *u, const char *text) { |
90 | UnitType t; | |
276c3e78 | 91 | char *s, *i = NULL; |
87f0e418 LP |
92 | int r; |
93 | ||
94 | assert(u); | |
95 | assert(text); | |
96 | ||
9e2f7c11 LP |
97 | if (unit_name_is_template(text)) { |
98 | if (!u->meta.instance) | |
99 | return -EINVAL; | |
87f0e418 | 100 | |
9e2f7c11 LP |
101 | s = unit_name_replace_instance(text, u->meta.instance); |
102 | } else | |
103 | s = strdup(text); | |
87f0e418 | 104 | |
9e2f7c11 LP |
105 | if (!s) |
106 | return -ENOMEM; | |
87f0e418 | 107 | |
b9c0d441 | 108 | if (!unit_name_is_valid(s, false)) { |
9e2f7c11 LP |
109 | r = -EINVAL; |
110 | goto fail; | |
111 | } | |
e537352b | 112 | |
9e2f7c11 | 113 | assert_se((t = unit_name_to_type(s)) >= 0); |
87f0e418 | 114 | |
9e2f7c11 LP |
115 | if (u->meta.type != _UNIT_TYPE_INVALID && t != u->meta.type) { |
116 | r = -EINVAL; | |
117 | goto fail; | |
118 | } | |
87f0e418 | 119 | |
9e2f7c11 LP |
120 | if ((r = unit_name_to_instance(s, &i)) < 0) |
121 | goto fail; | |
87f0e418 | 122 | |
796ba554 LP |
123 | if (i && unit_vtable[t]->no_instances) { |
124 | r = -EINVAL; | |
9e2f7c11 | 125 | goto fail; |
796ba554 | 126 | } |
9e2f7c11 | 127 | |
276c3e78 LP |
128 | /* Ensure that this unit is either instanced or not instanced, |
129 | * but not both. */ | |
130 | if (u->meta.type != _UNIT_TYPE_INVALID && !u->meta.instance != !i) { | |
9e2f7c11 LP |
131 | r = -EINVAL; |
132 | goto fail; | |
133 | } | |
134 | ||
135 | if (unit_vtable[t]->no_alias && | |
136 | !set_isempty(u->meta.names) && | |
137 | !set_get(u->meta.names, s)) { | |
138 | r = -EEXIST; | |
139 | goto fail; | |
140 | } | |
141 | ||
4f0f902f LP |
142 | if (hashmap_size(u->meta.manager->units) >= MANAGER_MAX_NAMES) { |
143 | r = -E2BIG; | |
144 | goto fail; | |
145 | } | |
146 | ||
9e2f7c11 LP |
147 | if ((r = set_put(u->meta.names, s)) < 0) { |
148 | if (r == -EEXIST) | |
149 | r = 0; | |
150 | goto fail; | |
87f0e418 LP |
151 | } |
152 | ||
153 | if ((r = hashmap_put(u->meta.manager->units, s, u)) < 0) { | |
154 | set_remove(u->meta.names, s); | |
9e2f7c11 | 155 | goto fail; |
87f0e418 LP |
156 | } |
157 | ||
e537352b | 158 | if (u->meta.type == _UNIT_TYPE_INVALID) { |
ef734fd6 | 159 | |
e537352b | 160 | u->meta.type = t; |
9e2f7c11 LP |
161 | u->meta.id = s; |
162 | u->meta.instance = i; | |
163 | ||
ab5c3e3f | 164 | LIST_PREPEND(Meta, units_by_type, u->meta.manager->units_by_type[t], &u->meta); |
e537352b LP |
165 | |
166 | if (UNIT_VTABLE(u)->init) | |
167 | UNIT_VTABLE(u)->init(u); | |
9e2f7c11 LP |
168 | } else |
169 | free(i); | |
87f0e418 | 170 | |
c1e1601e | 171 | unit_add_to_dbus_queue(u); |
87f0e418 | 172 | return 0; |
9e2f7c11 LP |
173 | |
174 | fail: | |
175 | free(s); | |
176 | free(i); | |
177 | ||
178 | return r; | |
87f0e418 LP |
179 | } |
180 | ||
0ae97ec1 | 181 | int unit_choose_id(Unit *u, const char *name) { |
276c3e78 LP |
182 | char *s, *t = NULL, *i; |
183 | int r; | |
0ae97ec1 LP |
184 | |
185 | assert(u); | |
186 | assert(name); | |
187 | ||
9e2f7c11 LP |
188 | if (unit_name_is_template(name)) { |
189 | ||
190 | if (!u->meta.instance) | |
191 | return -EINVAL; | |
192 | ||
193 | if (!(t = unit_name_replace_instance(name, u->meta.instance))) | |
194 | return -ENOMEM; | |
195 | ||
196 | name = t; | |
197 | } | |
198 | ||
0ae97ec1 | 199 | /* Selects one of the names of this unit as the id */ |
9e2f7c11 LP |
200 | s = set_get(u->meta.names, (char*) name); |
201 | free(t); | |
0ae97ec1 | 202 | |
9e2f7c11 | 203 | if (!s) |
0ae97ec1 LP |
204 | return -ENOENT; |
205 | ||
276c3e78 LP |
206 | if ((r = unit_name_to_instance(s, &i)) < 0) |
207 | return r; | |
208 | ||
0ae97ec1 | 209 | u->meta.id = s; |
276c3e78 LP |
210 | |
211 | free(u->meta.instance); | |
212 | u->meta.instance = i; | |
213 | ||
c1e1601e | 214 | unit_add_to_dbus_queue(u); |
9e2f7c11 | 215 | |
0ae97ec1 LP |
216 | return 0; |
217 | } | |
218 | ||
f50e0a01 LP |
219 | int unit_set_description(Unit *u, const char *description) { |
220 | char *s; | |
221 | ||
222 | assert(u); | |
223 | ||
224 | if (!(s = strdup(description))) | |
225 | return -ENOMEM; | |
226 | ||
227 | free(u->meta.description); | |
228 | u->meta.description = s; | |
c1e1601e LP |
229 | |
230 | unit_add_to_dbus_queue(u); | |
f50e0a01 LP |
231 | return 0; |
232 | } | |
233 | ||
701cc384 LP |
234 | bool unit_check_gc(Unit *u) { |
235 | assert(u); | |
236 | ||
b86d44e5 LP |
237 | if (u->meta.load_state == UNIT_STUB) |
238 | return true; | |
239 | ||
701cc384 LP |
240 | if (UNIT_VTABLE(u)->no_gc) |
241 | return true; | |
242 | ||
6c073082 LP |
243 | if (u->meta.no_gc) |
244 | return true; | |
245 | ||
701cc384 LP |
246 | if (u->meta.job) |
247 | return true; | |
248 | ||
249 | if (unit_active_state(u) != UNIT_INACTIVE) | |
250 | return true; | |
251 | ||
252 | if (UNIT_VTABLE(u)->check_gc) | |
253 | if (UNIT_VTABLE(u)->check_gc(u)) | |
254 | return true; | |
255 | ||
256 | return false; | |
257 | } | |
258 | ||
87f0e418 LP |
259 | void unit_add_to_load_queue(Unit *u) { |
260 | assert(u); | |
819e213f | 261 | assert(u->meta.type != _UNIT_TYPE_INVALID); |
87f0e418 LP |
262 | |
263 | if (u->meta.load_state != UNIT_STUB || u->meta.in_load_queue) | |
264 | return; | |
265 | ||
266 | LIST_PREPEND(Meta, load_queue, u->meta.manager->load_queue, &u->meta); | |
267 | u->meta.in_load_queue = true; | |
268 | } | |
269 | ||
23a177ef LP |
270 | void unit_add_to_cleanup_queue(Unit *u) { |
271 | assert(u); | |
272 | ||
273 | if (u->meta.in_cleanup_queue) | |
274 | return; | |
275 | ||
276 | LIST_PREPEND(Meta, cleanup_queue, u->meta.manager->cleanup_queue, &u->meta); | |
277 | u->meta.in_cleanup_queue = true; | |
278 | } | |
279 | ||
701cc384 LP |
280 | void unit_add_to_gc_queue(Unit *u) { |
281 | assert(u); | |
282 | ||
283 | if (u->meta.in_gc_queue || u->meta.in_cleanup_queue) | |
284 | return; | |
285 | ||
286 | if (unit_check_gc(u)) | |
287 | return; | |
288 | ||
289 | LIST_PREPEND(Meta, gc_queue, u->meta.manager->gc_queue, &u->meta); | |
290 | u->meta.in_gc_queue = true; | |
291 | ||
292 | u->meta.manager->n_in_gc_queue ++; | |
293 | ||
294 | if (u->meta.manager->gc_queue_timestamp <= 0) | |
295 | u->meta.manager->gc_queue_timestamp = now(CLOCK_MONOTONIC); | |
296 | } | |
297 | ||
c1e1601e LP |
298 | void unit_add_to_dbus_queue(Unit *u) { |
299 | assert(u); | |
819e213f | 300 | assert(u->meta.type != _UNIT_TYPE_INVALID); |
c1e1601e | 301 | |
94b6dfa2 | 302 | if (u->meta.load_state == UNIT_STUB || u->meta.in_dbus_queue) |
c1e1601e LP |
303 | return; |
304 | ||
a567261a LP |
305 | /* Shortcut things if nobody cares */ |
306 | if (!bus_has_subscriber(u->meta.manager)) { | |
94b6dfa2 LP |
307 | u->meta.sent_dbus_new_signal = true; |
308 | return; | |
309 | } | |
310 | ||
c1e1601e LP |
311 | LIST_PREPEND(Meta, dbus_queue, u->meta.manager->dbus_unit_queue, &u->meta); |
312 | u->meta.in_dbus_queue = true; | |
313 | } | |
314 | ||
87f0e418 LP |
315 | static void bidi_set_free(Unit *u, Set *s) { |
316 | Iterator i; | |
317 | Unit *other; | |
318 | ||
319 | assert(u); | |
320 | ||
321 | /* Frees the set and makes sure we are dropped from the | |
322 | * inverse pointers */ | |
323 | ||
324 | SET_FOREACH(other, s, i) { | |
325 | UnitDependency d; | |
326 | ||
327 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) | |
328 | set_remove(other->meta.dependencies[d], u); | |
701cc384 LP |
329 | |
330 | unit_add_to_gc_queue(other); | |
87f0e418 LP |
331 | } |
332 | ||
333 | set_free(s); | |
334 | } | |
335 | ||
336 | void unit_free(Unit *u) { | |
337 | UnitDependency d; | |
338 | Iterator i; | |
339 | char *t; | |
340 | ||
341 | assert(u); | |
342 | ||
c1e1601e LP |
343 | bus_unit_send_removed_signal(u); |
344 | ||
a013b84b LP |
345 | if (u->meta.load_state != UNIT_STUB) |
346 | if (UNIT_VTABLE(u)->done) | |
347 | UNIT_VTABLE(u)->done(u); | |
348 | ||
87f0e418 LP |
349 | SET_FOREACH(t, u->meta.names, i) |
350 | hashmap_remove_value(u->meta.manager->units, t, u); | |
351 | ||
964e0949 LP |
352 | if (u->meta.job) |
353 | job_free(u->meta.job); | |
354 | ||
355 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) | |
356 | bidi_set_free(u, u->meta.dependencies[d]); | |
357 | ||
ef734fd6 | 358 | if (u->meta.type != _UNIT_TYPE_INVALID) |
ab5c3e3f | 359 | LIST_REMOVE(Meta, units_by_type, u->meta.manager->units_by_type[u->meta.type], &u->meta); |
ef734fd6 | 360 | |
87f0e418 LP |
361 | if (u->meta.in_load_queue) |
362 | LIST_REMOVE(Meta, load_queue, u->meta.manager->load_queue, &u->meta); | |
363 | ||
c1e1601e LP |
364 | if (u->meta.in_dbus_queue) |
365 | LIST_REMOVE(Meta, dbus_queue, u->meta.manager->dbus_unit_queue, &u->meta); | |
366 | ||
23a177ef LP |
367 | if (u->meta.in_cleanup_queue) |
368 | LIST_REMOVE(Meta, cleanup_queue, u->meta.manager->cleanup_queue, &u->meta); | |
369 | ||
701cc384 LP |
370 | if (u->meta.in_gc_queue) { |
371 | LIST_REMOVE(Meta, gc_queue, u->meta.manager->gc_queue, &u->meta); | |
372 | u->meta.manager->n_in_gc_queue--; | |
373 | } | |
374 | ||
a7556052 | 375 | cgroup_bonding_free_list(u->meta.cgroup_bondings, u->meta.manager->n_reloading <= 0); |
ab1f0633 | 376 | cgroup_attribute_free_list(u->meta.cgroup_attributes); |
87f0e418 | 377 | |
87f0e418 | 378 | free(u->meta.description); |
6be1e7d5 | 379 | free(u->meta.fragment_path); |
87f0e418 | 380 | |
53ec43c6 | 381 | set_free_free(u->meta.names); |
87f0e418 | 382 | |
52661efd LP |
383 | condition_free_list(u->meta.conditions); |
384 | ||
9e2f7c11 | 385 | free(u->meta.instance); |
87f0e418 LP |
386 | free(u); |
387 | } | |
388 | ||
389 | UnitActiveState unit_active_state(Unit *u) { | |
390 | assert(u); | |
391 | ||
6124958c LP |
392 | if (u->meta.load_state == UNIT_MERGED) |
393 | return unit_active_state(unit_follow_merge(u)); | |
394 | ||
395 | /* After a reload it might happen that a unit is not correctly | |
396 | * loaded but still has a process around. That's why we won't | |
fdf20a31 | 397 | * shortcut failed loading to UNIT_INACTIVE_FAILED. */ |
87f0e418 LP |
398 | |
399 | return UNIT_VTABLE(u)->active_state(u); | |
400 | } | |
401 | ||
10a94420 LP |
402 | const char* unit_sub_state_to_string(Unit *u) { |
403 | assert(u); | |
404 | ||
405 | return UNIT_VTABLE(u)->sub_state_to_string(u); | |
406 | } | |
407 | ||
23a177ef LP |
408 | static void complete_move(Set **s, Set **other) { |
409 | assert(s); | |
410 | assert(other); | |
87f0e418 | 411 | |
23a177ef LP |
412 | if (!*other) |
413 | return; | |
87f0e418 LP |
414 | |
415 | if (*s) | |
23a177ef LP |
416 | set_move(*s, *other); |
417 | else { | |
418 | *s = *other; | |
419 | *other = NULL; | |
420 | } | |
421 | } | |
87f0e418 | 422 | |
23a177ef LP |
423 | static void merge_names(Unit *u, Unit *other) { |
424 | char *t; | |
425 | Iterator i; | |
87f0e418 | 426 | |
23a177ef LP |
427 | assert(u); |
428 | assert(other); | |
429 | ||
430 | complete_move(&u->meta.names, &other->meta.names); | |
431 | ||
53ec43c6 | 432 | set_free_free(other->meta.names); |
23a177ef LP |
433 | other->meta.names = NULL; |
434 | other->meta.id = NULL; | |
435 | ||
436 | SET_FOREACH(t, u->meta.names, i) | |
437 | assert_se(hashmap_replace(u->meta.manager->units, t, u) == 0); | |
87f0e418 LP |
438 | } |
439 | ||
23a177ef LP |
440 | static void merge_dependencies(Unit *u, Unit *other, UnitDependency d) { |
441 | Iterator i; | |
442 | Unit *back; | |
87f0e418 | 443 | int r; |
23a177ef LP |
444 | |
445 | assert(u); | |
446 | assert(other); | |
447 | assert(d < _UNIT_DEPENDENCY_MAX); | |
448 | ||
83a95334 | 449 | /* Fix backwards pointers */ |
23a177ef LP |
450 | SET_FOREACH(back, other->meta.dependencies[d], i) { |
451 | UnitDependency k; | |
452 | ||
453 | for (k = 0; k < _UNIT_DEPENDENCY_MAX; k++) | |
454 | if ((r = set_remove_and_put(back->meta.dependencies[k], other, u)) < 0) { | |
455 | ||
456 | if (r == -EEXIST) | |
457 | set_remove(back->meta.dependencies[k], other); | |
458 | else | |
459 | assert(r == -ENOENT); | |
460 | } | |
461 | } | |
462 | ||
463 | complete_move(&u->meta.dependencies[d], &other->meta.dependencies[d]); | |
464 | ||
465 | set_free(other->meta.dependencies[d]); | |
466 | other->meta.dependencies[d] = NULL; | |
467 | } | |
468 | ||
469 | int unit_merge(Unit *u, Unit *other) { | |
87f0e418 LP |
470 | UnitDependency d; |
471 | ||
472 | assert(u); | |
473 | assert(other); | |
474 | assert(u->meta.manager == other->meta.manager); | |
9e2f7c11 | 475 | assert(u->meta.type != _UNIT_TYPE_INVALID); |
87f0e418 | 476 | |
cc916967 LP |
477 | other = unit_follow_merge(other); |
478 | ||
23a177ef LP |
479 | if (other == u) |
480 | return 0; | |
481 | ||
9e2f7c11 LP |
482 | if (u->meta.type != other->meta.type) |
483 | return -EINVAL; | |
484 | ||
276c3e78 | 485 | if (!u->meta.instance != !other->meta.instance) |
87f0e418 LP |
486 | return -EINVAL; |
487 | ||
cc916967 | 488 | if (other->meta.load_state != UNIT_STUB && |
fdf20a31 | 489 | other->meta.load_state != UNIT_ERROR) |
23a177ef | 490 | return -EEXIST; |
87f0e418 | 491 | |
819e213f LP |
492 | if (other->meta.job) |
493 | return -EEXIST; | |
494 | ||
fdf20a31 | 495 | if (!UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other))) |
819e213f LP |
496 | return -EEXIST; |
497 | ||
87f0e418 | 498 | /* Merge names */ |
23a177ef | 499 | merge_names(u, other); |
87f0e418 LP |
500 | |
501 | /* Merge dependencies */ | |
502 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) | |
23a177ef | 503 | merge_dependencies(u, other, d); |
87f0e418 | 504 | |
23a177ef LP |
505 | other->meta.load_state = UNIT_MERGED; |
506 | other->meta.merged_into = u; | |
507 | ||
3616a49c LP |
508 | /* If there is still some data attached to the other node, we |
509 | * don't need it anymore, and can free it. */ | |
510 | if (other->meta.load_state != UNIT_STUB) | |
511 | if (UNIT_VTABLE(other)->done) | |
512 | UNIT_VTABLE(other)->done(other); | |
513 | ||
514 | unit_add_to_dbus_queue(u); | |
23a177ef LP |
515 | unit_add_to_cleanup_queue(other); |
516 | ||
517 | return 0; | |
518 | } | |
519 | ||
520 | int unit_merge_by_name(Unit *u, const char *name) { | |
521 | Unit *other; | |
9e2f7c11 LP |
522 | int r; |
523 | char *s = NULL; | |
23a177ef LP |
524 | |
525 | assert(u); | |
526 | assert(name); | |
527 | ||
9e2f7c11 LP |
528 | if (unit_name_is_template(name)) { |
529 | if (!u->meta.instance) | |
530 | return -EINVAL; | |
531 | ||
532 | if (!(s = unit_name_replace_instance(name, u->meta.instance))) | |
533 | return -ENOMEM; | |
534 | ||
535 | name = s; | |
536 | } | |
537 | ||
23a177ef | 538 | if (!(other = manager_get_unit(u->meta.manager, name))) |
9e2f7c11 LP |
539 | r = unit_add_name(u, name); |
540 | else | |
541 | r = unit_merge(u, other); | |
23a177ef | 542 | |
9e2f7c11 LP |
543 | free(s); |
544 | return r; | |
23a177ef LP |
545 | } |
546 | ||
547 | Unit* unit_follow_merge(Unit *u) { | |
548 | assert(u); | |
549 | ||
550 | while (u->meta.load_state == UNIT_MERGED) | |
551 | assert_se(u = u->meta.merged_into); | |
552 | ||
553 | return u; | |
554 | } | |
555 | ||
556 | int unit_add_exec_dependencies(Unit *u, ExecContext *c) { | |
557 | int r; | |
558 | ||
559 | assert(u); | |
560 | assert(c); | |
561 | ||
ecc6e2b8 LP |
562 | if (c->std_output != EXEC_OUTPUT_KMSG && |
563 | c->std_output != EXEC_OUTPUT_SYSLOG && | |
706343f4 | 564 | c->std_output != EXEC_OUTPUT_JOURNAL && |
28dbc1e8 LP |
565 | c->std_output != EXEC_OUTPUT_KMSG_AND_CONSOLE && |
566 | c->std_output != EXEC_OUTPUT_SYSLOG_AND_CONSOLE && | |
706343f4 | 567 | c->std_output != EXEC_OUTPUT_JOURNAL_AND_CONSOLE && |
ecc6e2b8 | 568 | c->std_error != EXEC_OUTPUT_KMSG && |
085c98af | 569 | c->std_error != EXEC_OUTPUT_SYSLOG && |
706343f4 | 570 | c->std_error != EXEC_OUTPUT_JOURNAL && |
085c98af | 571 | c->std_error != EXEC_OUTPUT_KMSG_AND_CONSOLE && |
706343f4 | 572 | c->std_error != EXEC_OUTPUT_JOURNAL_AND_CONSOLE && |
28dbc1e8 | 573 | c->std_error != EXEC_OUTPUT_SYSLOG_AND_CONSOLE) |
23a177ef LP |
574 | return 0; |
575 | ||
576 | /* If syslog or kernel logging is requested, make sure our own | |
577 | * logging daemon is run first. */ | |
578 | ||
a3d4e06d | 579 | if (u->meta.manager->running_as == MANAGER_SYSTEM) |
54fe0cdb | 580 | if ((r = unit_add_two_dependencies_by_name(u, UNIT_REQUIRES, UNIT_AFTER, SPECIAL_JOURNALD_SOCKET, NULL, true)) < 0) |
23a177ef LP |
581 | return r; |
582 | ||
87f0e418 LP |
583 | return 0; |
584 | } | |
585 | ||
87f0e418 LP |
586 | const char *unit_description(Unit *u) { |
587 | assert(u); | |
588 | ||
589 | if (u->meta.description) | |
590 | return u->meta.description; | |
591 | ||
9f151f29 | 592 | return strna(u->meta.id); |
87f0e418 LP |
593 | } |
594 | ||
595 | void unit_dump(Unit *u, FILE *f, const char *prefix) { | |
87f0e418 LP |
596 | char *t; |
597 | UnitDependency d; | |
598 | Iterator i; | |
47be870b LP |
599 | char *p2; |
600 | const char *prefix2; | |
173e3821 LP |
601 | char |
602 | timestamp1[FORMAT_TIMESTAMP_MAX], | |
603 | timestamp2[FORMAT_TIMESTAMP_MAX], | |
604 | timestamp3[FORMAT_TIMESTAMP_MAX], | |
faf919f1 LP |
605 | timestamp4[FORMAT_TIMESTAMP_MAX], |
606 | timespan[FORMAT_TIMESPAN_MAX]; | |
a7f241db | 607 | Unit *following; |
87f0e418 LP |
608 | |
609 | assert(u); | |
9e2f7c11 | 610 | assert(u->meta.type >= 0); |
87f0e418 LP |
611 | |
612 | if (!prefix) | |
613 | prefix = ""; | |
47be870b LP |
614 | p2 = strappend(prefix, "\t"); |
615 | prefix2 = p2 ? p2 : prefix; | |
87f0e418 LP |
616 | |
617 | fprintf(f, | |
40d50879 | 618 | "%s-> Unit %s:\n" |
87f0e418 | 619 | "%s\tDescription: %s\n" |
9e2f7c11 | 620 | "%s\tInstance: %s\n" |
87f0e418 | 621 | "%s\tUnit Load State: %s\n" |
2fad8195 | 622 | "%s\tUnit Active State: %s\n" |
173e3821 | 623 | "%s\tInactive Exit Timestamp: %s\n" |
2fad8195 | 624 | "%s\tActive Enter Timestamp: %s\n" |
701cc384 | 625 | "%s\tActive Exit Timestamp: %s\n" |
173e3821 | 626 | "%s\tInactive Enter Timestamp: %s\n" |
45fb0699 LP |
627 | "%s\tGC Check Good: %s\n" |
628 | "%s\tNeed Daemon Reload: %s\n", | |
9e2f7c11 | 629 | prefix, u->meta.id, |
87f0e418 | 630 | prefix, unit_description(u), |
9e2f7c11 | 631 | prefix, strna(u->meta.instance), |
94f04347 | 632 | prefix, unit_load_state_to_string(u->meta.load_state), |
2fad8195 | 633 | prefix, unit_active_state_to_string(unit_active_state(u)), |
871d7de4 LP |
634 | prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->meta.inactive_exit_timestamp.realtime)), |
635 | prefix, strna(format_timestamp(timestamp2, sizeof(timestamp2), u->meta.active_enter_timestamp.realtime)), | |
636 | prefix, strna(format_timestamp(timestamp3, sizeof(timestamp3), u->meta.active_exit_timestamp.realtime)), | |
637 | prefix, strna(format_timestamp(timestamp4, sizeof(timestamp4), u->meta.inactive_enter_timestamp.realtime)), | |
45fb0699 LP |
638 | prefix, yes_no(unit_check_gc(u)), |
639 | prefix, yes_no(unit_need_daemon_reload(u))); | |
0301abf4 | 640 | |
87f0e418 LP |
641 | SET_FOREACH(t, u->meta.names, i) |
642 | fprintf(f, "%s\tName: %s\n", prefix, t); | |
643 | ||
a7f241db LP |
644 | if ((following = unit_following(u))) |
645 | fprintf(f, "%s\tFollowing: %s\n", prefix, following->meta.id); | |
8fe914ec | 646 | |
23a177ef LP |
647 | if (u->meta.fragment_path) |
648 | fprintf(f, "%s\tFragment Path: %s\n", prefix, u->meta.fragment_path); | |
649 | ||
faf919f1 LP |
650 | if (u->meta.job_timeout > 0) |
651 | fprintf(f, "%s\tJob Timeout: %s\n", prefix, format_timespan(timespan, sizeof(timespan), u->meta.job_timeout)); | |
652 | ||
52661efd LP |
653 | condition_dump_list(u->meta.conditions, f, prefix); |
654 | ||
2791a8f8 LP |
655 | if (dual_timestamp_is_set(&u->meta.condition_timestamp)) |
656 | fprintf(f, | |
657 | "%s\tCondition Timestamp: %s\n" | |
658 | "%s\tCondition Result: %s\n", | |
659 | prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->meta.condition_timestamp.realtime)), | |
660 | prefix, yes_no(u->meta.condition_result)); | |
661 | ||
87f0e418 LP |
662 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) { |
663 | Unit *other; | |
664 | ||
87f0e418 | 665 | SET_FOREACH(other, u->meta.dependencies[d], i) |
9e2f7c11 | 666 | fprintf(f, "%s\t%s: %s\n", prefix, unit_dependency_to_string(d), other->meta.id); |
87f0e418 LP |
667 | } |
668 | ||
23a177ef | 669 | if (u->meta.load_state == UNIT_LOADED) { |
ab1f0633 LP |
670 | CGroupBonding *b; |
671 | CGroupAttribute *a; | |
672 | ||
b0650475 | 673 | fprintf(f, |
a40eb732 | 674 | "%s\tStopWhenUnneeded: %s\n" |
b5e9dba8 LP |
675 | "%s\tRefuseManualStart: %s\n" |
676 | "%s\tRefuseManualStop: %s\n" | |
222ae6a8 | 677 | "%s\tDefaultDependencies: %s\n" |
c8f4d764 | 678 | "%s\tOnFailureIsolate: %s\n" |
7a6000a6 LP |
679 | "%s\tIgnoreOnIsolate: %s\n" |
680 | "%s\tIgnoreOnSnapshot: %s\n", | |
a40eb732 | 681 | prefix, yes_no(u->meta.stop_when_unneeded), |
b5e9dba8 LP |
682 | prefix, yes_no(u->meta.refuse_manual_start), |
683 | prefix, yes_no(u->meta.refuse_manual_stop), | |
222ae6a8 | 684 | prefix, yes_no(u->meta.default_dependencies), |
c8f4d764 | 685 | prefix, yes_no(u->meta.on_failure_isolate), |
7a6000a6 LP |
686 | prefix, yes_no(u->meta.ignore_on_isolate), |
687 | prefix, yes_no(u->meta.ignore_on_snapshot)); | |
b0650475 | 688 | |
23a177ef LP |
689 | LIST_FOREACH(by_unit, b, u->meta.cgroup_bondings) |
690 | fprintf(f, "%s\tControlGroup: %s:%s\n", | |
691 | prefix, b->controller, b->path); | |
8e274523 | 692 | |
d8bbda91 LP |
693 | LIST_FOREACH(by_unit, a, u->meta.cgroup_attributes) { |
694 | char *v = NULL; | |
695 | ||
696 | if (a->map_callback) | |
697 | a->map_callback(a->controller, a->name, a->value, &v); | |
698 | ||
ab1f0633 | 699 | fprintf(f, "%s\tControlGroupAttribute: %s %s \"%s\"\n", |
d8bbda91 LP |
700 | prefix, a->controller, a->name, v ? v : a->value); |
701 | ||
702 | free(v); | |
703 | } | |
ab1f0633 | 704 | |
23a177ef LP |
705 | if (UNIT_VTABLE(u)->dump) |
706 | UNIT_VTABLE(u)->dump(u, f, prefix2); | |
b0650475 LP |
707 | |
708 | } else if (u->meta.load_state == UNIT_MERGED) | |
709 | fprintf(f, | |
710 | "%s\tMerged into: %s\n", | |
9e2f7c11 | 711 | prefix, u->meta.merged_into->meta.id); |
fdf20a31 | 712 | else if (u->meta.load_state == UNIT_ERROR) |
8821a00f LP |
713 | fprintf(f, "%s\tLoad Error Code: %s\n", prefix, strerror(-u->meta.load_error)); |
714 | ||
87f0e418 LP |
715 | |
716 | if (u->meta.job) | |
717 | job_dump(u->meta.job, f, prefix2); | |
718 | ||
47be870b | 719 | free(p2); |
87f0e418 LP |
720 | } |
721 | ||
722 | /* Common implementation for multiple backends */ | |
e537352b | 723 | int unit_load_fragment_and_dropin(Unit *u) { |
23a177ef LP |
724 | int r; |
725 | ||
726 | assert(u); | |
23a177ef LP |
727 | |
728 | /* Load a .service file */ | |
e537352b | 729 | if ((r = unit_load_fragment(u)) < 0) |
23a177ef LP |
730 | return r; |
731 | ||
e537352b | 732 | if (u->meta.load_state == UNIT_STUB) |
23a177ef LP |
733 | return -ENOENT; |
734 | ||
735 | /* Load drop-in directory data */ | |
736 | if ((r = unit_load_dropin(unit_follow_merge(u))) < 0) | |
737 | return r; | |
738 | ||
739 | return 0; | |
740 | } | |
741 | ||
742 | /* Common implementation for multiple backends */ | |
e537352b | 743 | int unit_load_fragment_and_dropin_optional(Unit *u) { |
23a177ef | 744 | int r; |
87f0e418 LP |
745 | |
746 | assert(u); | |
747 | ||
23a177ef LP |
748 | /* Same as unit_load_fragment_and_dropin(), but whether |
749 | * something can be loaded or not doesn't matter. */ | |
750 | ||
751 | /* Load a .service file */ | |
e537352b | 752 | if ((r = unit_load_fragment(u)) < 0) |
87f0e418 LP |
753 | return r; |
754 | ||
e537352b LP |
755 | if (u->meta.load_state == UNIT_STUB) |
756 | u->meta.load_state = UNIT_LOADED; | |
d46de8a1 | 757 | |
87f0e418 | 758 | /* Load drop-in directory data */ |
23a177ef | 759 | if ((r = unit_load_dropin(unit_follow_merge(u))) < 0) |
87f0e418 LP |
760 | return r; |
761 | ||
23a177ef | 762 | return 0; |
87f0e418 LP |
763 | } |
764 | ||
bba34eed | 765 | int unit_add_default_target_dependency(Unit *u, Unit *target) { |
98bc2000 LP |
766 | assert(u); |
767 | assert(target); | |
768 | ||
769 | if (target->meta.type != UNIT_TARGET) | |
770 | return 0; | |
771 | ||
35b8ca3a | 772 | /* Only add the dependency if both units are loaded, so that |
bba34eed LP |
773 | * that loop check below is reliable */ |
774 | if (u->meta.load_state != UNIT_LOADED || | |
775 | target->meta.load_state != UNIT_LOADED) | |
776 | return 0; | |
777 | ||
21256a2b LP |
778 | /* If either side wants no automatic dependencies, then let's |
779 | * skip this */ | |
780 | if (!u->meta.default_dependencies || | |
a65cb51f | 781 | !target->meta.default_dependencies) |
21256a2b LP |
782 | return 0; |
783 | ||
98bc2000 LP |
784 | /* Don't create loops */ |
785 | if (set_get(target->meta.dependencies[UNIT_BEFORE], u)) | |
786 | return 0; | |
787 | ||
788 | return unit_add_dependency(target, UNIT_AFTER, u, true); | |
789 | } | |
790 | ||
791 | static int unit_add_default_dependencies(Unit *u) { | |
21256a2b LP |
792 | static const UnitDependency deps[] = { |
793 | UNIT_REQUIRED_BY, | |
794 | UNIT_REQUIRED_BY_OVERRIDABLE, | |
795 | UNIT_WANTED_BY, | |
796 | UNIT_BOUND_BY | |
797 | }; | |
798 | ||
bba34eed | 799 | Unit *target; |
98bc2000 LP |
800 | Iterator i; |
801 | int r; | |
21256a2b | 802 | unsigned k; |
98bc2000 LP |
803 | |
804 | assert(u); | |
805 | ||
21256a2b LP |
806 | for (k = 0; k < ELEMENTSOF(deps); k++) |
807 | SET_FOREACH(target, u->meta.dependencies[deps[k]], i) | |
808 | if ((r = unit_add_default_target_dependency(u, target)) < 0) | |
809 | return r; | |
b81884e7 | 810 | |
98bc2000 LP |
811 | return 0; |
812 | } | |
813 | ||
87f0e418 LP |
814 | int unit_load(Unit *u) { |
815 | int r; | |
816 | ||
817 | assert(u); | |
818 | ||
819 | if (u->meta.in_load_queue) { | |
820 | LIST_REMOVE(Meta, load_queue, u->meta.manager->load_queue, &u->meta); | |
821 | u->meta.in_load_queue = false; | |
822 | } | |
823 | ||
e537352b LP |
824 | if (u->meta.type == _UNIT_TYPE_INVALID) |
825 | return -EINVAL; | |
826 | ||
87f0e418 LP |
827 | if (u->meta.load_state != UNIT_STUB) |
828 | return 0; | |
829 | ||
e537352b LP |
830 | if (UNIT_VTABLE(u)->load) |
831 | if ((r = UNIT_VTABLE(u)->load(u)) < 0) | |
87f0e418 | 832 | goto fail; |
23a177ef | 833 | |
e537352b | 834 | if (u->meta.load_state == UNIT_STUB) { |
23a177ef LP |
835 | r = -ENOENT; |
836 | goto fail; | |
837 | } | |
838 | ||
98bc2000 LP |
839 | if (u->meta.load_state == UNIT_LOADED && |
840 | u->meta.default_dependencies) | |
841 | if ((r = unit_add_default_dependencies(u)) < 0) | |
842 | goto fail; | |
843 | ||
f68319bb LP |
844 | if (u->meta.on_failure_isolate && |
845 | set_size(u->meta.dependencies[UNIT_ON_FAILURE]) > 1) { | |
846 | ||
847 | log_error("More than one OnFailure= dependencies specified for %s but OnFailureIsolate= enabled. Refusing.", | |
848 | u->meta.id); | |
849 | ||
850 | r = -EINVAL; | |
851 | goto fail; | |
852 | } | |
853 | ||
23a177ef LP |
854 | assert((u->meta.load_state != UNIT_MERGED) == !u->meta.merged_into); |
855 | ||
856 | unit_add_to_dbus_queue(unit_follow_merge(u)); | |
701cc384 | 857 | unit_add_to_gc_queue(u); |
87f0e418 | 858 | |
87f0e418 LP |
859 | return 0; |
860 | ||
861 | fail: | |
fdf20a31 | 862 | u->meta.load_state = UNIT_ERROR; |
8821a00f | 863 | u->meta.load_error = r; |
c1e1601e | 864 | unit_add_to_dbus_queue(u); |
9a46fc3b | 865 | unit_add_to_gc_queue(u); |
23a177ef | 866 | |
8821a00f | 867 | log_debug("Failed to load configuration for %s: %s", u->meta.id, strerror(-r)); |
23a177ef | 868 | |
87f0e418 LP |
869 | return r; |
870 | } | |
871 | ||
90bbc946 LP |
872 | bool unit_condition_test(Unit *u) { |
873 | assert(u); | |
874 | ||
875 | dual_timestamp_get(&u->meta.condition_timestamp); | |
876 | u->meta.condition_result = condition_test_list(u->meta.conditions); | |
877 | ||
878 | return u->meta.condition_result; | |
879 | } | |
880 | ||
87f0e418 | 881 | /* Errors: |
d5159713 LP |
882 | * -EBADR: This unit type does not support starting. |
883 | * -EALREADY: Unit is already started. | |
884 | * -EAGAIN: An operation is already in progress. Retry later. | |
885 | * -ECANCELED: Too many requests for now. | |
87f0e418 LP |
886 | */ |
887 | int unit_start(Unit *u) { | |
888 | UnitActiveState state; | |
92ab323c | 889 | Unit *following; |
87f0e418 LP |
890 | |
891 | assert(u); | |
892 | ||
6124958c LP |
893 | if (u->meta.load_state != UNIT_LOADED) |
894 | return -EINVAL; | |
895 | ||
a82e5507 LP |
896 | /* If this is already started, then this will succeed. Note |
897 | * that this will even succeed if this unit is not startable | |
898 | * by the user. This is relied on to detect when we need to | |
899 | * wait for units and when waiting is finished. */ | |
87f0e418 LP |
900 | state = unit_active_state(u); |
901 | if (UNIT_IS_ACTIVE_OR_RELOADING(state)) | |
902 | return -EALREADY; | |
903 | ||
a82e5507 LP |
904 | /* If the conditions failed, don't do anything at all. If we |
905 | * already are activating this call might still be useful to | |
906 | * speed up activation in case there is some hold-off time, | |
907 | * but we don't want to recheck the condition in that case. */ | |
908 | if (state != UNIT_ACTIVATING && | |
909 | !unit_condition_test(u)) { | |
52661efd LP |
910 | log_debug("Starting of %s requested but condition failed. Ignoring.", u->meta.id); |
911 | return -EALREADY; | |
912 | } | |
913 | ||
92ab323c LP |
914 | /* Forward to the main object, if we aren't it. */ |
915 | if ((following = unit_following(u))) { | |
916 | log_debug("Redirecting start request from %s to %s.", u->meta.id, following->meta.id); | |
917 | return unit_start(following); | |
918 | } | |
919 | ||
920 | /* If it is stopped, but we cannot start it, then fail */ | |
921 | if (!UNIT_VTABLE(u)->start) | |
922 | return -EBADR; | |
923 | ||
87f0e418 LP |
924 | /* We don't suppress calls to ->start() here when we are |
925 | * already starting, to allow this request to be used as a | |
926 | * "hurry up" call, for example when the unit is in some "auto | |
927 | * restart" state where it waits for a holdoff timer to elapse | |
928 | * before it will start again. */ | |
929 | ||
c1e1601e | 930 | unit_add_to_dbus_queue(u); |
9e58ff9c | 931 | |
5831e9b7 | 932 | unit_status_printf(u, NULL, "Starting %s...", unit_description(u)); |
87f0e418 LP |
933 | return UNIT_VTABLE(u)->start(u); |
934 | } | |
935 | ||
936 | bool unit_can_start(Unit *u) { | |
937 | assert(u); | |
938 | ||
939 | return !!UNIT_VTABLE(u)->start; | |
940 | } | |
941 | ||
2528a7a6 LP |
942 | bool unit_can_isolate(Unit *u) { |
943 | assert(u); | |
944 | ||
945 | return unit_can_start(u) && | |
946 | u->meta.allow_isolate; | |
947 | } | |
948 | ||
87f0e418 LP |
949 | /* Errors: |
950 | * -EBADR: This unit type does not support stopping. | |
951 | * -EALREADY: Unit is already stopped. | |
952 | * -EAGAIN: An operation is already in progress. Retry later. | |
953 | */ | |
954 | int unit_stop(Unit *u) { | |
955 | UnitActiveState state; | |
92ab323c | 956 | Unit *following; |
87f0e418 LP |
957 | |
958 | assert(u); | |
959 | ||
87f0e418 | 960 | state = unit_active_state(u); |
fdf20a31 | 961 | if (UNIT_IS_INACTIVE_OR_FAILED(state)) |
87f0e418 LP |
962 | return -EALREADY; |
963 | ||
92ab323c LP |
964 | if ((following = unit_following(u))) { |
965 | log_debug("Redirecting stop request from %s to %s.", u->meta.id, following->meta.id); | |
966 | return unit_stop(following); | |
967 | } | |
968 | ||
7898b0cf LP |
969 | if (!UNIT_VTABLE(u)->stop) |
970 | return -EBADR; | |
971 | ||
c1e1601e | 972 | unit_add_to_dbus_queue(u); |
9e58ff9c | 973 | |
5831e9b7 | 974 | unit_status_printf(u, NULL, "Stopping %s...", unit_description(u)); |
87f0e418 LP |
975 | return UNIT_VTABLE(u)->stop(u); |
976 | } | |
977 | ||
978 | /* Errors: | |
979 | * -EBADR: This unit type does not support reloading. | |
980 | * -ENOEXEC: Unit is not started. | |
981 | * -EAGAIN: An operation is already in progress. Retry later. | |
982 | */ | |
983 | int unit_reload(Unit *u) { | |
984 | UnitActiveState state; | |
92ab323c | 985 | Unit *following; |
87f0e418 LP |
986 | |
987 | assert(u); | |
988 | ||
6124958c LP |
989 | if (u->meta.load_state != UNIT_LOADED) |
990 | return -EINVAL; | |
991 | ||
87f0e418 LP |
992 | if (!unit_can_reload(u)) |
993 | return -EBADR; | |
994 | ||
995 | state = unit_active_state(u); | |
e364ad06 | 996 | if (state == UNIT_RELOADING) |
87f0e418 LP |
997 | return -EALREADY; |
998 | ||
e364ad06 | 999 | if (state != UNIT_ACTIVE) |
87f0e418 LP |
1000 | return -ENOEXEC; |
1001 | ||
92ab323c LP |
1002 | if ((following = unit_following(u))) { |
1003 | log_debug("Redirecting reload request from %s to %s.", u->meta.id, following->meta.id); | |
1004 | return unit_reload(following); | |
1005 | } | |
1006 | ||
c1e1601e | 1007 | unit_add_to_dbus_queue(u); |
87f0e418 LP |
1008 | return UNIT_VTABLE(u)->reload(u); |
1009 | } | |
1010 | ||
1011 | bool unit_can_reload(Unit *u) { | |
1012 | assert(u); | |
1013 | ||
1014 | if (!UNIT_VTABLE(u)->reload) | |
1015 | return false; | |
1016 | ||
1017 | if (!UNIT_VTABLE(u)->can_reload) | |
1018 | return true; | |
1019 | ||
1020 | return UNIT_VTABLE(u)->can_reload(u); | |
1021 | } | |
1022 | ||
b4a16b7b | 1023 | static void unit_check_unneeded(Unit *u) { |
f3bff0eb LP |
1024 | Iterator i; |
1025 | Unit *other; | |
1026 | ||
1027 | assert(u); | |
1028 | ||
1029 | /* If this service shall be shut down when unneeded then do | |
1030 | * so. */ | |
1031 | ||
1032 | if (!u->meta.stop_when_unneeded) | |
1033 | return; | |
1034 | ||
1035 | if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) | |
1036 | return; | |
1037 | ||
1038 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRED_BY], i) | |
f60c2665 | 1039 | if (unit_pending_active(other)) |
f3bff0eb LP |
1040 | return; |
1041 | ||
9e2f7c11 | 1042 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRED_BY_OVERRIDABLE], i) |
f60c2665 | 1043 | if (unit_pending_active(other)) |
f3bff0eb LP |
1044 | return; |
1045 | ||
1046 | SET_FOREACH(other, u->meta.dependencies[UNIT_WANTED_BY], i) | |
f60c2665 | 1047 | if (unit_pending_active(other)) |
f3bff0eb LP |
1048 | return; |
1049 | ||
b81884e7 | 1050 | SET_FOREACH(other, u->meta.dependencies[UNIT_BOUND_BY], i) |
f60c2665 | 1051 | if (unit_pending_active(other)) |
b81884e7 LP |
1052 | return; |
1053 | ||
54165a39 | 1054 | log_info("Service %s is not needed anymore. Stopping.", u->meta.id); |
f3bff0eb LP |
1055 | |
1056 | /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */ | |
398ef8ba | 1057 | manager_add_job(u->meta.manager, JOB_STOP, u, JOB_FAIL, true, NULL, NULL); |
f3bff0eb LP |
1058 | } |
1059 | ||
87f0e418 LP |
1060 | static void retroactively_start_dependencies(Unit *u) { |
1061 | Iterator i; | |
1062 | Unit *other; | |
1063 | ||
1064 | assert(u); | |
1065 | assert(UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))); | |
1066 | ||
1067 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRES], i) | |
b81884e7 LP |
1068 | if (!set_get(u->meta.dependencies[UNIT_AFTER], other) && |
1069 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) | |
1070 | manager_add_job(u->meta.manager, JOB_START, other, JOB_REPLACE, true, NULL, NULL); | |
1071 | ||
1072 | SET_FOREACH(other, u->meta.dependencies[UNIT_BIND_TO], i) | |
1073 | if (!set_get(u->meta.dependencies[UNIT_AFTER], other) && | |
1074 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) | |
398ef8ba | 1075 | manager_add_job(u->meta.manager, JOB_START, other, JOB_REPLACE, true, NULL, NULL); |
87f0e418 | 1076 | |
9e2f7c11 | 1077 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRES_OVERRIDABLE], i) |
b81884e7 LP |
1078 | if (!set_get(u->meta.dependencies[UNIT_AFTER], other) && |
1079 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) | |
398ef8ba | 1080 | manager_add_job(u->meta.manager, JOB_START, other, JOB_FAIL, false, NULL, NULL); |
87f0e418 LP |
1081 | |
1082 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUISITE], i) | |
b81884e7 LP |
1083 | if (!set_get(u->meta.dependencies[UNIT_AFTER], other) && |
1084 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) | |
398ef8ba | 1085 | manager_add_job(u->meta.manager, JOB_START, other, JOB_REPLACE, true, NULL, NULL); |
87f0e418 LP |
1086 | |
1087 | SET_FOREACH(other, u->meta.dependencies[UNIT_WANTS], i) | |
b81884e7 LP |
1088 | if (!set_get(u->meta.dependencies[UNIT_AFTER], other) && |
1089 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) | |
398ef8ba | 1090 | manager_add_job(u->meta.manager, JOB_START, other, JOB_FAIL, false, NULL, NULL); |
87f0e418 LP |
1091 | |
1092 | SET_FOREACH(other, u->meta.dependencies[UNIT_CONFLICTS], i) | |
b81884e7 | 1093 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
398ef8ba | 1094 | manager_add_job(u->meta.manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL); |
69dd2852 LP |
1095 | |
1096 | SET_FOREACH(other, u->meta.dependencies[UNIT_CONFLICTED_BY], i) | |
b81884e7 | 1097 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
69dd2852 | 1098 | manager_add_job(u->meta.manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL); |
87f0e418 LP |
1099 | } |
1100 | ||
1101 | static void retroactively_stop_dependencies(Unit *u) { | |
1102 | Iterator i; | |
1103 | Unit *other; | |
1104 | ||
1105 | assert(u); | |
1106 | assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))); | |
1107 | ||
b81884e7 LP |
1108 | /* Pull down units which are bound to us recursively if enabled */ |
1109 | SET_FOREACH(other, u->meta.dependencies[UNIT_BOUND_BY], i) | |
1110 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) | |
f14e15f8 | 1111 | manager_add_job(u->meta.manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL); |
cd0504d0 MS |
1112 | } |
1113 | ||
1114 | static void check_unneeded_dependencies(Unit *u) { | |
1115 | Iterator i; | |
1116 | Unit *other; | |
1117 | ||
1118 | assert(u); | |
1119 | assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))); | |
f3bff0eb LP |
1120 | |
1121 | /* Garbage collect services that might not be needed anymore, if enabled */ | |
1122 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRES], i) | |
87f0e418 | 1123 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1124 | unit_check_unneeded(other); |
9e2f7c11 | 1125 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRES_OVERRIDABLE], i) |
f3bff0eb | 1126 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1127 | unit_check_unneeded(other); |
f3bff0eb LP |
1128 | SET_FOREACH(other, u->meta.dependencies[UNIT_WANTS], i) |
1129 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) | |
b4a16b7b | 1130 | unit_check_unneeded(other); |
f3bff0eb LP |
1131 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUISITE], i) |
1132 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) | |
b4a16b7b | 1133 | unit_check_unneeded(other); |
9e2f7c11 | 1134 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUISITE_OVERRIDABLE], i) |
f3bff0eb | 1135 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1136 | unit_check_unneeded(other); |
b81884e7 LP |
1137 | SET_FOREACH(other, u->meta.dependencies[UNIT_BIND_TO], i) |
1138 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) | |
1139 | unit_check_unneeded(other); | |
87f0e418 LP |
1140 | } |
1141 | ||
c0daa706 LP |
1142 | void unit_trigger_on_failure(Unit *u) { |
1143 | Unit *other; | |
1144 | Iterator i; | |
1145 | ||
1146 | assert(u); | |
1147 | ||
222ae6a8 LP |
1148 | if (set_size(u->meta.dependencies[UNIT_ON_FAILURE]) <= 0) |
1149 | return; | |
1150 | ||
1151 | log_info("Triggering OnFailure= dependencies of %s.", u->meta.id); | |
1152 | ||
1153 | SET_FOREACH(other, u->meta.dependencies[UNIT_ON_FAILURE], i) { | |
1154 | int r; | |
1155 | ||
1156 | if ((r = manager_add_job(u->meta.manager, JOB_START, other, u->meta.on_failure_isolate ? JOB_ISOLATE : JOB_REPLACE, true, NULL, NULL)) < 0) | |
1157 | log_error("Failed to enqueue OnFailure= job: %s", strerror(-r)); | |
1158 | } | |
c0daa706 LP |
1159 | } |
1160 | ||
e2f3b44c | 1161 | void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_success) { |
7e6e7b06 | 1162 | bool unexpected; |
a096ed36 | 1163 | |
87f0e418 LP |
1164 | assert(u); |
1165 | assert(os < _UNIT_ACTIVE_STATE_MAX); | |
1166 | assert(ns < _UNIT_ACTIVE_STATE_MAX); | |
87f0e418 | 1167 | |
8e471ccd LP |
1168 | /* Note that this is called for all low-level state changes, |
1169 | * even if they might map to the same high-level | |
1170 | * UnitActiveState! That means that ns == os is OK an expected | |
1171 | * behaviour here. For example: if a mount point is remounted | |
cd6d0a45 | 1172 | * this function will be called too! */ |
87f0e418 | 1173 | |
a7556052 | 1174 | if (u->meta.manager->n_reloading <= 0) { |
bdbf9951 | 1175 | dual_timestamp ts; |
173e3821 | 1176 | |
bdbf9951 | 1177 | dual_timestamp_get(&ts); |
173e3821 | 1178 | |
bdbf9951 LP |
1179 | if (UNIT_IS_INACTIVE_OR_FAILED(os) && !UNIT_IS_INACTIVE_OR_FAILED(ns)) |
1180 | u->meta.inactive_exit_timestamp = ts; | |
1181 | else if (!UNIT_IS_INACTIVE_OR_FAILED(os) && UNIT_IS_INACTIVE_OR_FAILED(ns)) | |
1182 | u->meta.inactive_enter_timestamp = ts; | |
1183 | ||
1184 | if (!UNIT_IS_ACTIVE_OR_RELOADING(os) && UNIT_IS_ACTIVE_OR_RELOADING(ns)) | |
1185 | u->meta.active_enter_timestamp = ts; | |
1186 | else if (UNIT_IS_ACTIVE_OR_RELOADING(os) && !UNIT_IS_ACTIVE_OR_RELOADING(ns)) | |
1187 | u->meta.active_exit_timestamp = ts; | |
1188 | ||
1189 | timer_unit_notify(u, ns); | |
1190 | path_unit_notify(u, ns); | |
1191 | } | |
87f0e418 | 1192 | |
fdf20a31 | 1193 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
fb385181 LP |
1194 | cgroup_bonding_trim_list(u->meta.cgroup_bondings, true); |
1195 | ||
87f0e418 | 1196 | if (u->meta.job) { |
7e6e7b06 | 1197 | unexpected = false; |
87f0e418 LP |
1198 | |
1199 | if (u->meta.job->state == JOB_WAITING) | |
1200 | ||
1201 | /* So we reached a different state for this | |
1202 | * job. Let's see if we can run it now if it | |
1203 | * failed previously due to EAGAIN. */ | |
c1e1601e | 1204 | job_add_to_run_queue(u->meta.job); |
87f0e418 | 1205 | |
b410e6b9 | 1206 | /* Let's check whether this state change constitutes a |
35b8ca3a | 1207 | * finished job, or maybe contradicts a running job and |
b410e6b9 | 1208 | * hence needs to invalidate jobs. */ |
87f0e418 | 1209 | |
b410e6b9 | 1210 | switch (u->meta.job->type) { |
87f0e418 | 1211 | |
b410e6b9 LP |
1212 | case JOB_START: |
1213 | case JOB_VERIFY_ACTIVE: | |
87f0e418 | 1214 | |
b410e6b9 | 1215 | if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) |
5d44db4a | 1216 | job_finish_and_invalidate(u->meta.job, JOB_DONE); |
b410e6b9 LP |
1217 | else if (u->meta.job->state == JOB_RUNNING && ns != UNIT_ACTIVATING) { |
1218 | unexpected = true; | |
41b02ec7 | 1219 | |
fdf20a31 | 1220 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
5d44db4a | 1221 | job_finish_and_invalidate(u->meta.job, ns == UNIT_FAILED ? JOB_FAILED : JOB_DONE); |
b410e6b9 | 1222 | } |
87f0e418 | 1223 | |
b410e6b9 | 1224 | break; |
87f0e418 | 1225 | |
b410e6b9 LP |
1226 | case JOB_RELOAD: |
1227 | case JOB_RELOAD_OR_START: | |
87f0e418 | 1228 | |
b410e6b9 | 1229 | if (u->meta.job->state == JOB_RUNNING) { |
a096ed36 | 1230 | if (ns == UNIT_ACTIVE) |
5d44db4a | 1231 | job_finish_and_invalidate(u->meta.job, reload_success ? JOB_DONE : JOB_FAILED); |
032ff4af | 1232 | else if (ns != UNIT_ACTIVATING && ns != UNIT_RELOADING) { |
a096ed36 | 1233 | unexpected = true; |
41b02ec7 | 1234 | |
fdf20a31 | 1235 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
5d44db4a | 1236 | job_finish_and_invalidate(u->meta.job, ns == UNIT_FAILED ? JOB_FAILED : JOB_DONE); |
a096ed36 | 1237 | } |
b410e6b9 | 1238 | } |
87f0e418 | 1239 | |
b410e6b9 | 1240 | break; |
87f0e418 | 1241 | |
b410e6b9 LP |
1242 | case JOB_STOP: |
1243 | case JOB_RESTART: | |
1244 | case JOB_TRY_RESTART: | |
87f0e418 | 1245 | |
fdf20a31 | 1246 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
5d44db4a | 1247 | job_finish_and_invalidate(u->meta.job, JOB_DONE); |
b410e6b9 LP |
1248 | else if (u->meta.job->state == JOB_RUNNING && ns != UNIT_DEACTIVATING) { |
1249 | unexpected = true; | |
5d44db4a | 1250 | job_finish_and_invalidate(u->meta.job, JOB_FAILED); |
b410e6b9 | 1251 | } |
87f0e418 | 1252 | |
b410e6b9 | 1253 | break; |
87f0e418 | 1254 | |
b410e6b9 LP |
1255 | default: |
1256 | assert_not_reached("Job type unknown"); | |
87f0e418 | 1257 | } |
87f0e418 | 1258 | |
7e6e7b06 LP |
1259 | } else |
1260 | unexpected = true; | |
1261 | ||
a7556052 | 1262 | if (u->meta.manager->n_reloading <= 0) { |
f3bff0eb | 1263 | |
bdbf9951 LP |
1264 | /* If this state change happened without being |
1265 | * requested by a job, then let's retroactively start | |
1266 | * or stop dependencies. We skip that step when | |
1267 | * deserializing, since we don't want to create any | |
1268 | * additional jobs just because something is already | |
1269 | * activated. */ | |
1270 | ||
1271 | if (unexpected) { | |
1272 | if (UNIT_IS_INACTIVE_OR_FAILED(os) && UNIT_IS_ACTIVE_OR_ACTIVATING(ns)) | |
1273 | retroactively_start_dependencies(u); | |
1274 | else if (UNIT_IS_ACTIVE_OR_ACTIVATING(os) && UNIT_IS_INACTIVE_OR_DEACTIVATING(ns)) | |
1275 | retroactively_stop_dependencies(u); | |
1276 | } | |
5de9682c | 1277 | |
cd0504d0 MS |
1278 | /* stop unneeded units regardless if going down was expected or not */ |
1279 | if (UNIT_IS_ACTIVE_OR_ACTIVATING(os) && UNIT_IS_INACTIVE_OR_DEACTIVATING(ns)) | |
1280 | check_unneeded_dependencies(u); | |
1281 | ||
bdbf9951 LP |
1282 | if (ns != os && ns == UNIT_FAILED) { |
1283 | log_notice("Unit %s entered failed state.", u->meta.id); | |
1284 | unit_trigger_on_failure(u); | |
cd6d0a45 | 1285 | } |
3b2775c5 | 1286 | } |
e537352b | 1287 | |
3b2775c5 LP |
1288 | /* Some names are special */ |
1289 | if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) { | |
1290 | ||
1291 | if (unit_has_name(u, SPECIAL_DBUS_SERVICE)) | |
1292 | /* The bus just might have become available, | |
1293 | * hence try to connect to it, if we aren't | |
1294 | * yet connected. */ | |
1295 | bus_init(u->meta.manager, true); | |
1296 | ||
1297 | if (u->meta.type == UNIT_SERVICE && | |
1298 | !UNIT_IS_ACTIVE_OR_RELOADING(os) && | |
a7556052 | 1299 | u->meta.manager->n_reloading <= 0) { |
3b2775c5 LP |
1300 | /* Write audit record if we have just finished starting up */ |
1301 | manager_send_unit_audit(u->meta.manager, u, AUDIT_SERVICE_START, true); | |
1302 | u->meta.in_audit = true; | |
1303 | } | |
e983b760 | 1304 | |
3b2775c5 LP |
1305 | if (!UNIT_IS_ACTIVE_OR_RELOADING(os)) |
1306 | manager_send_unit_plymouth(u->meta.manager, u); | |
bdbf9951 | 1307 | |
3b2775c5 | 1308 | } else { |
bdbf9951 | 1309 | |
3b2775c5 LP |
1310 | /* We don't care about D-Bus here, since we'll get an |
1311 | * asynchronous notification for it anyway. */ | |
cd6d0a45 | 1312 | |
3b2775c5 LP |
1313 | if (u->meta.type == UNIT_SERVICE && |
1314 | UNIT_IS_INACTIVE_OR_FAILED(ns) && | |
1315 | !UNIT_IS_INACTIVE_OR_FAILED(os) && | |
a7556052 | 1316 | u->meta.manager->n_reloading <= 0) { |
4927fcae | 1317 | |
3b2775c5 LP |
1318 | /* Hmm, if there was no start record written |
1319 | * write it now, so that we always have a nice | |
1320 | * pair */ | |
1321 | if (!u->meta.in_audit) { | |
1322 | manager_send_unit_audit(u->meta.manager, u, AUDIT_SERVICE_START, ns == UNIT_INACTIVE); | |
cd6d0a45 | 1323 | |
3b2775c5 LP |
1324 | if (ns == UNIT_INACTIVE) |
1325 | manager_send_unit_audit(u->meta.manager, u, AUDIT_SERVICE_STOP, true); | |
1326 | } else | |
1327 | /* Write audit record if we have just finished shutting down */ | |
1328 | manager_send_unit_audit(u->meta.manager, u, AUDIT_SERVICE_STOP, ns == UNIT_INACTIVE); | |
bdbf9951 | 1329 | |
3b2775c5 | 1330 | u->meta.in_audit = false; |
cd6d0a45 | 1331 | } |
f278026d LP |
1332 | } |
1333 | ||
3b2775c5 LP |
1334 | manager_recheck_syslog(u->meta.manager); |
1335 | ||
f3bff0eb LP |
1336 | /* Maybe we finished startup and are now ready for being |
1337 | * stopped because unneeded? */ | |
b4a16b7b | 1338 | unit_check_unneeded(u); |
c1e1601e LP |
1339 | |
1340 | unit_add_to_dbus_queue(u); | |
701cc384 | 1341 | unit_add_to_gc_queue(u); |
87f0e418 LP |
1342 | } |
1343 | ||
acbb0225 | 1344 | int unit_watch_fd(Unit *u, int fd, uint32_t events, Watch *w) { |
87f0e418 LP |
1345 | struct epoll_event ev; |
1346 | ||
1347 | assert(u); | |
1348 | assert(fd >= 0); | |
acbb0225 | 1349 | assert(w); |
ea430986 | 1350 | assert(w->type == WATCH_INVALID || (w->type == WATCH_FD && w->fd == fd && w->data.unit == u)); |
87f0e418 LP |
1351 | |
1352 | zero(ev); | |
acbb0225 | 1353 | ev.data.ptr = w; |
87f0e418 LP |
1354 | ev.events = events; |
1355 | ||
acbb0225 LP |
1356 | if (epoll_ctl(u->meta.manager->epoll_fd, |
1357 | w->type == WATCH_INVALID ? EPOLL_CTL_ADD : EPOLL_CTL_MOD, | |
1358 | fd, | |
1359 | &ev) < 0) | |
1360 | return -errno; | |
87f0e418 | 1361 | |
acbb0225 LP |
1362 | w->fd = fd; |
1363 | w->type = WATCH_FD; | |
ea430986 | 1364 | w->data.unit = u; |
87f0e418 | 1365 | |
acbb0225 | 1366 | return 0; |
87f0e418 LP |
1367 | } |
1368 | ||
acbb0225 | 1369 | void unit_unwatch_fd(Unit *u, Watch *w) { |
87f0e418 | 1370 | assert(u); |
acbb0225 | 1371 | assert(w); |
87f0e418 | 1372 | |
acbb0225 LP |
1373 | if (w->type == WATCH_INVALID) |
1374 | return; | |
1375 | ||
ea430986 LP |
1376 | assert(w->type == WATCH_FD); |
1377 | assert(w->data.unit == u); | |
acbb0225 LP |
1378 | assert_se(epoll_ctl(u->meta.manager->epoll_fd, EPOLL_CTL_DEL, w->fd, NULL) >= 0); |
1379 | ||
1380 | w->fd = -1; | |
1381 | w->type = WATCH_INVALID; | |
ea430986 | 1382 | w->data.unit = NULL; |
87f0e418 LP |
1383 | } |
1384 | ||
1385 | int unit_watch_pid(Unit *u, pid_t pid) { | |
1386 | assert(u); | |
1387 | assert(pid >= 1); | |
1388 | ||
05e343b7 LP |
1389 | /* Watch a specific PID. We only support one unit watching |
1390 | * each PID for now. */ | |
1391 | ||
c6c18be3 | 1392 | return hashmap_put(u->meta.manager->watch_pids, LONG_TO_PTR(pid), u); |
87f0e418 LP |
1393 | } |
1394 | ||
1395 | void unit_unwatch_pid(Unit *u, pid_t pid) { | |
1396 | assert(u); | |
1397 | assert(pid >= 1); | |
1398 | ||
c6c18be3 | 1399 | hashmap_remove_value(u->meta.manager->watch_pids, LONG_TO_PTR(pid), u); |
87f0e418 LP |
1400 | } |
1401 | ||
acbb0225 | 1402 | int unit_watch_timer(Unit *u, usec_t delay, Watch *w) { |
87f0e418 | 1403 | struct itimerspec its; |
acbb0225 | 1404 | int flags, fd; |
87f0e418 LP |
1405 | bool ours; |
1406 | ||
1407 | assert(u); | |
acbb0225 | 1408 | assert(w); |
faf919f1 | 1409 | assert(w->type == WATCH_INVALID || (w->type == WATCH_UNIT_TIMER && w->data.unit == u)); |
87f0e418 LP |
1410 | |
1411 | /* This will try to reuse the old timer if there is one */ | |
1412 | ||
faf919f1 LP |
1413 | if (w->type == WATCH_UNIT_TIMER) { |
1414 | assert(w->data.unit == u); | |
1415 | assert(w->fd >= 0); | |
1416 | ||
87f0e418 | 1417 | ours = false; |
acbb0225 | 1418 | fd = w->fd; |
faf919f1 LP |
1419 | } else if (w->type == WATCH_INVALID) { |
1420 | ||
87f0e418 | 1421 | ours = true; |
87f0e418 LP |
1422 | if ((fd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK|TFD_CLOEXEC)) < 0) |
1423 | return -errno; | |
faf919f1 LP |
1424 | } else |
1425 | assert_not_reached("Invalid watch type"); | |
87f0e418 LP |
1426 | |
1427 | zero(its); | |
1428 | ||
1429 | if (delay <= 0) { | |
1430 | /* Set absolute time in the past, but not 0, since we | |
1431 | * don't want to disarm the timer */ | |
1432 | its.it_value.tv_sec = 0; | |
1433 | its.it_value.tv_nsec = 1; | |
1434 | ||
1435 | flags = TFD_TIMER_ABSTIME; | |
1436 | } else { | |
1437 | timespec_store(&its.it_value, delay); | |
1438 | flags = 0; | |
1439 | } | |
1440 | ||
1441 | /* This will also flush the elapse counter */ | |
1442 | if (timerfd_settime(fd, flags, &its, NULL) < 0) | |
1443 | goto fail; | |
1444 | ||
acbb0225 LP |
1445 | if (w->type == WATCH_INVALID) { |
1446 | struct epoll_event ev; | |
87f0e418 | 1447 | |
acbb0225 LP |
1448 | zero(ev); |
1449 | ev.data.ptr = w; | |
f94ea366 | 1450 | ev.events = EPOLLIN; |
acbb0225 LP |
1451 | |
1452 | if (epoll_ctl(u->meta.manager->epoll_fd, EPOLL_CTL_ADD, fd, &ev) < 0) | |
1453 | goto fail; | |
1454 | } | |
1455 | ||
faf919f1 | 1456 | w->type = WATCH_UNIT_TIMER; |
acbb0225 | 1457 | w->fd = fd; |
ea430986 | 1458 | w->data.unit = u; |
87f0e418 | 1459 | |
87f0e418 LP |
1460 | return 0; |
1461 | ||
1462 | fail: | |
1463 | if (ours) | |
ea430986 | 1464 | close_nointr_nofail(fd); |
87f0e418 LP |
1465 | |
1466 | return -errno; | |
1467 | } | |
1468 | ||
acbb0225 | 1469 | void unit_unwatch_timer(Unit *u, Watch *w) { |
87f0e418 | 1470 | assert(u); |
acbb0225 | 1471 | assert(w); |
87f0e418 | 1472 | |
acbb0225 | 1473 | if (w->type == WATCH_INVALID) |
87f0e418 LP |
1474 | return; |
1475 | ||
faf919f1 LP |
1476 | assert(w->type == WATCH_UNIT_TIMER); |
1477 | assert(w->data.unit == u); | |
1478 | assert(w->fd >= 0); | |
acbb0225 LP |
1479 | |
1480 | assert_se(epoll_ctl(u->meta.manager->epoll_fd, EPOLL_CTL_DEL, w->fd, NULL) >= 0); | |
a16e1123 | 1481 | close_nointr_nofail(w->fd); |
acbb0225 LP |
1482 | |
1483 | w->fd = -1; | |
1484 | w->type = WATCH_INVALID; | |
ea430986 | 1485 | w->data.unit = NULL; |
87f0e418 LP |
1486 | } |
1487 | ||
1488 | bool unit_job_is_applicable(Unit *u, JobType j) { | |
1489 | assert(u); | |
1490 | assert(j >= 0 && j < _JOB_TYPE_MAX); | |
1491 | ||
1492 | switch (j) { | |
1493 | ||
1494 | case JOB_VERIFY_ACTIVE: | |
1495 | case JOB_START: | |
57339f47 | 1496 | case JOB_STOP: |
87f0e418 LP |
1497 | return true; |
1498 | ||
87f0e418 LP |
1499 | case JOB_RESTART: |
1500 | case JOB_TRY_RESTART: | |
1501 | return unit_can_start(u); | |
1502 | ||
1503 | case JOB_RELOAD: | |
1504 | return unit_can_reload(u); | |
1505 | ||
1506 | case JOB_RELOAD_OR_START: | |
1507 | return unit_can_reload(u) && unit_can_start(u); | |
1508 | ||
1509 | default: | |
1510 | assert_not_reached("Invalid job type"); | |
1511 | } | |
1512 | } | |
1513 | ||
701cc384 | 1514 | int unit_add_dependency(Unit *u, UnitDependency d, Unit *other, bool add_reference) { |
87f0e418 LP |
1515 | |
1516 | static const UnitDependency inverse_table[_UNIT_DEPENDENCY_MAX] = { | |
1517 | [UNIT_REQUIRES] = UNIT_REQUIRED_BY, | |
9e2f7c11 | 1518 | [UNIT_REQUIRES_OVERRIDABLE] = UNIT_REQUIRED_BY_OVERRIDABLE, |
87f0e418 LP |
1519 | [UNIT_WANTS] = UNIT_WANTED_BY, |
1520 | [UNIT_REQUISITE] = UNIT_REQUIRED_BY, | |
9e2f7c11 | 1521 | [UNIT_REQUISITE_OVERRIDABLE] = UNIT_REQUIRED_BY_OVERRIDABLE, |
b81884e7 | 1522 | [UNIT_BIND_TO] = UNIT_BOUND_BY, |
87f0e418 | 1523 | [UNIT_REQUIRED_BY] = _UNIT_DEPENDENCY_INVALID, |
9e2f7c11 | 1524 | [UNIT_REQUIRED_BY_OVERRIDABLE] = _UNIT_DEPENDENCY_INVALID, |
87f0e418 | 1525 | [UNIT_WANTED_BY] = _UNIT_DEPENDENCY_INVALID, |
b81884e7 | 1526 | [UNIT_BOUND_BY] = UNIT_BIND_TO, |
69dd2852 LP |
1527 | [UNIT_CONFLICTS] = UNIT_CONFLICTED_BY, |
1528 | [UNIT_CONFLICTED_BY] = UNIT_CONFLICTS, | |
87f0e418 | 1529 | [UNIT_BEFORE] = UNIT_AFTER, |
701cc384 | 1530 | [UNIT_AFTER] = UNIT_BEFORE, |
5de9682c | 1531 | [UNIT_ON_FAILURE] = _UNIT_DEPENDENCY_INVALID, |
701cc384 LP |
1532 | [UNIT_REFERENCES] = UNIT_REFERENCED_BY, |
1533 | [UNIT_REFERENCED_BY] = UNIT_REFERENCES | |
87f0e418 | 1534 | }; |
701cc384 | 1535 | int r, q = 0, v = 0, w = 0; |
87f0e418 LP |
1536 | |
1537 | assert(u); | |
1538 | assert(d >= 0 && d < _UNIT_DEPENDENCY_MAX); | |
87f0e418 LP |
1539 | assert(other); |
1540 | ||
9f151f29 LP |
1541 | u = unit_follow_merge(u); |
1542 | other = unit_follow_merge(other); | |
1543 | ||
87f0e418 LP |
1544 | /* We won't allow dependencies on ourselves. We will not |
1545 | * consider them an error however. */ | |
1546 | if (u == other) | |
1547 | return 0; | |
1548 | ||
5de9682c | 1549 | if ((r = set_ensure_allocated(&u->meta.dependencies[d], trivial_hash_func, trivial_compare_func)) < 0) |
87f0e418 LP |
1550 | return r; |
1551 | ||
5de9682c LP |
1552 | if (inverse_table[d] != _UNIT_DEPENDENCY_INVALID) |
1553 | if ((r = set_ensure_allocated(&other->meta.dependencies[inverse_table[d]], trivial_hash_func, trivial_compare_func)) < 0) | |
1554 | return r; | |
1555 | ||
701cc384 LP |
1556 | if (add_reference) |
1557 | if ((r = set_ensure_allocated(&u->meta.dependencies[UNIT_REFERENCES], trivial_hash_func, trivial_compare_func)) < 0 || | |
1558 | (r = set_ensure_allocated(&other->meta.dependencies[UNIT_REFERENCED_BY], trivial_hash_func, trivial_compare_func)) < 0) | |
1559 | return r; | |
87f0e418 | 1560 | |
701cc384 LP |
1561 | if ((q = set_put(u->meta.dependencies[d], other)) < 0) |
1562 | return q; | |
87f0e418 | 1563 | |
5de9682c LP |
1564 | if (inverse_table[d] != _UNIT_DEPENDENCY_INVALID) |
1565 | if ((v = set_put(other->meta.dependencies[inverse_table[d]], u)) < 0) { | |
1566 | r = v; | |
1567 | goto fail; | |
1568 | } | |
701cc384 LP |
1569 | |
1570 | if (add_reference) { | |
1571 | if ((w = set_put(u->meta.dependencies[UNIT_REFERENCES], other)) < 0) { | |
1572 | r = w; | |
1573 | goto fail; | |
1574 | } | |
1575 | ||
1576 | if ((r = set_put(other->meta.dependencies[UNIT_REFERENCED_BY], u)) < 0) | |
1577 | goto fail; | |
87f0e418 LP |
1578 | } |
1579 | ||
c1e1601e | 1580 | unit_add_to_dbus_queue(u); |
87f0e418 | 1581 | return 0; |
701cc384 LP |
1582 | |
1583 | fail: | |
1584 | if (q > 0) | |
1585 | set_remove(u->meta.dependencies[d], other); | |
1586 | ||
1587 | if (v > 0) | |
1588 | set_remove(other->meta.dependencies[inverse_table[d]], u); | |
1589 | ||
1590 | if (w > 0) | |
1591 | set_remove(u->meta.dependencies[UNIT_REFERENCES], other); | |
1592 | ||
1593 | return r; | |
87f0e418 | 1594 | } |
0301abf4 | 1595 | |
2c966c03 LP |
1596 | int unit_add_two_dependencies(Unit *u, UnitDependency d, UnitDependency e, Unit *other, bool add_reference) { |
1597 | int r; | |
1598 | ||
1599 | assert(u); | |
1600 | ||
1601 | if ((r = unit_add_dependency(u, d, other, add_reference)) < 0) | |
1602 | return r; | |
1603 | ||
1604 | if ((r = unit_add_dependency(u, e, other, add_reference)) < 0) | |
1605 | return r; | |
1606 | ||
1607 | return 0; | |
1608 | } | |
1609 | ||
9e2f7c11 LP |
1610 | static const char *resolve_template(Unit *u, const char *name, const char*path, char **p) { |
1611 | char *s; | |
1612 | ||
1613 | assert(u); | |
1614 | assert(name || path); | |
1615 | ||
1616 | if (!name) | |
1617 | name = file_name_from_path(path); | |
1618 | ||
1619 | if (!unit_name_is_template(name)) { | |
1620 | *p = NULL; | |
1621 | return name; | |
1622 | } | |
1623 | ||
1624 | if (u->meta.instance) | |
1625 | s = unit_name_replace_instance(name, u->meta.instance); | |
1626 | else { | |
1627 | char *i; | |
1628 | ||
1629 | if (!(i = unit_name_to_prefix(u->meta.id))) | |
1630 | return NULL; | |
1631 | ||
1632 | s = unit_name_replace_instance(name, i); | |
1633 | free(i); | |
1634 | } | |
1635 | ||
1636 | if (!s) | |
1637 | return NULL; | |
1638 | ||
1639 | *p = s; | |
1640 | return s; | |
1641 | } | |
1642 | ||
701cc384 | 1643 | int unit_add_dependency_by_name(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) { |
09b6b09f LP |
1644 | Unit *other; |
1645 | int r; | |
9e2f7c11 | 1646 | char *s; |
09b6b09f | 1647 | |
9e2f7c11 LP |
1648 | assert(u); |
1649 | assert(name || path); | |
09b6b09f | 1650 | |
9e2f7c11 LP |
1651 | if (!(name = resolve_template(u, name, path, &s))) |
1652 | return -ENOMEM; | |
09b6b09f | 1653 | |
398ef8ba | 1654 | if ((r = manager_load_unit(u->meta.manager, name, path, NULL, &other)) < 0) |
9e2f7c11 LP |
1655 | goto finish; |
1656 | ||
701cc384 | 1657 | r = unit_add_dependency(u, d, other, add_reference); |
9e2f7c11 LP |
1658 | |
1659 | finish: | |
1660 | free(s); | |
1661 | return r; | |
09b6b09f LP |
1662 | } |
1663 | ||
2c966c03 LP |
1664 | int unit_add_two_dependencies_by_name(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference) { |
1665 | Unit *other; | |
1666 | int r; | |
1667 | char *s; | |
1668 | ||
1669 | assert(u); | |
1670 | assert(name || path); | |
1671 | ||
1672 | if (!(name = resolve_template(u, name, path, &s))) | |
1673 | return -ENOMEM; | |
1674 | ||
398ef8ba | 1675 | if ((r = manager_load_unit(u->meta.manager, name, path, NULL, &other)) < 0) |
2c966c03 LP |
1676 | goto finish; |
1677 | ||
1678 | r = unit_add_two_dependencies(u, d, e, other, add_reference); | |
1679 | ||
1680 | finish: | |
1681 | free(s); | |
1682 | return r; | |
1683 | } | |
1684 | ||
701cc384 | 1685 | int unit_add_dependency_by_name_inverse(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) { |
bd77d0fc LP |
1686 | Unit *other; |
1687 | int r; | |
9e2f7c11 | 1688 | char *s; |
bd77d0fc | 1689 | |
9e2f7c11 LP |
1690 | assert(u); |
1691 | assert(name || path); | |
bd77d0fc | 1692 | |
9e2f7c11 LP |
1693 | if (!(name = resolve_template(u, name, path, &s))) |
1694 | return -ENOMEM; | |
bd77d0fc | 1695 | |
398ef8ba | 1696 | if ((r = manager_load_unit(u->meta.manager, name, path, NULL, &other)) < 0) |
9e2f7c11 LP |
1697 | goto finish; |
1698 | ||
701cc384 | 1699 | r = unit_add_dependency(other, d, u, add_reference); |
9e2f7c11 LP |
1700 | |
1701 | finish: | |
1702 | free(s); | |
1703 | return r; | |
bd77d0fc LP |
1704 | } |
1705 | ||
2c966c03 LP |
1706 | int unit_add_two_dependencies_by_name_inverse(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference) { |
1707 | Unit *other; | |
1708 | int r; | |
1709 | char *s; | |
1710 | ||
1711 | assert(u); | |
1712 | assert(name || path); | |
1713 | ||
1714 | if (!(name = resolve_template(u, name, path, &s))) | |
1715 | return -ENOMEM; | |
1716 | ||
398ef8ba | 1717 | if ((r = manager_load_unit(u->meta.manager, name, path, NULL, &other)) < 0) |
2c966c03 LP |
1718 | goto finish; |
1719 | ||
1720 | if ((r = unit_add_two_dependencies(other, d, e, u, add_reference)) < 0) | |
1721 | goto finish; | |
1722 | ||
1723 | finish: | |
1724 | free(s); | |
1725 | return r; | |
1726 | } | |
1727 | ||
0301abf4 LP |
1728 | int set_unit_path(const char *p) { |
1729 | char *cwd, *c; | |
1730 | int r; | |
1731 | ||
1732 | /* This is mostly for debug purposes */ | |
1733 | ||
1734 | if (path_is_absolute(p)) { | |
1735 | if (!(c = strdup(p))) | |
1736 | return -ENOMEM; | |
1737 | } else { | |
1738 | if (!(cwd = get_current_dir_name())) | |
1739 | return -errno; | |
1740 | ||
1741 | r = asprintf(&c, "%s/%s", cwd, p); | |
1742 | free(cwd); | |
1743 | ||
1744 | if (r < 0) | |
1745 | return -ENOMEM; | |
1746 | } | |
1747 | ||
036643a2 | 1748 | if (setenv("SYSTEMD_UNIT_PATH", c, 0) < 0) { |
0301abf4 LP |
1749 | r = -errno; |
1750 | free(c); | |
1751 | return r; | |
1752 | } | |
1753 | ||
1754 | return 0; | |
1755 | } | |
88066b3a | 1756 | |
ea430986 LP |
1757 | char *unit_dbus_path(Unit *u) { |
1758 | char *p, *e; | |
1759 | ||
1760 | assert(u); | |
1761 | ||
04ade7d2 LP |
1762 | if (!u->meta.id) |
1763 | return NULL; | |
1764 | ||
9e2f7c11 | 1765 | if (!(e = bus_path_escape(u->meta.id))) |
ea430986 LP |
1766 | return NULL; |
1767 | ||
35d2e7ec | 1768 | p = strappend("/org/freedesktop/systemd1/unit/", e); |
ea430986 | 1769 | free(e); |
35d2e7ec | 1770 | |
ea430986 LP |
1771 | return p; |
1772 | } | |
1773 | ||
8e274523 | 1774 | int unit_add_cgroup(Unit *u, CGroupBonding *b) { |
8e274523 LP |
1775 | int r; |
1776 | ||
1777 | assert(u); | |
1778 | assert(b); | |
35d2e7ec | 1779 | |
8e274523 LP |
1780 | assert(b->path); |
1781 | ||
e025b4c3 | 1782 | if (!b->controller) { |
35d2e7ec LP |
1783 | if (!(b->controller = strdup(SYSTEMD_CGROUP_CONTROLLER))) |
1784 | return -ENOMEM; | |
1785 | ||
e025b4c3 LP |
1786 | b->ours = true; |
1787 | } | |
1788 | ||
8e274523 LP |
1789 | /* Ensure this hasn't been added yet */ |
1790 | assert(!b->unit); | |
1791 | ||
d686d8a9 LP |
1792 | if (streq(b->controller, SYSTEMD_CGROUP_CONTROLLER)) { |
1793 | CGroupBonding *l; | |
8e274523 | 1794 | |
d686d8a9 LP |
1795 | l = hashmap_get(u->meta.manager->cgroup_bondings, b->path); |
1796 | LIST_PREPEND(CGroupBonding, by_path, l, b); | |
1797 | ||
1798 | if ((r = hashmap_replace(u->meta.manager->cgroup_bondings, b->path, l)) < 0) { | |
1799 | LIST_REMOVE(CGroupBonding, by_path, l, b); | |
1800 | return r; | |
1801 | } | |
8e274523 LP |
1802 | } |
1803 | ||
1804 | LIST_PREPEND(CGroupBonding, by_unit, u->meta.cgroup_bondings, b); | |
1805 | b->unit = u; | |
1806 | ||
1807 | return 0; | |
1808 | } | |
1809 | ||
013b87c0 LP |
1810 | static char *default_cgroup_path(Unit *u) { |
1811 | char *p; | |
1812 | ||
1813 | assert(u); | |
1814 | ||
4f2d528d LP |
1815 | if (u->meta.instance) { |
1816 | char *t; | |
013b87c0 | 1817 | |
cd0ed1db LP |
1818 | t = unit_name_template(u->meta.id); |
1819 | if (!t) | |
4f2d528d LP |
1820 | return NULL; |
1821 | ||
cd0ed1db | 1822 | p = join(u->meta.manager->cgroup_hierarchy, "/", t, "/", u->meta.instance, NULL); |
4f2d528d LP |
1823 | free(t); |
1824 | } else | |
cd0ed1db | 1825 | p = join(u->meta.manager->cgroup_hierarchy, "/", u->meta.id, NULL); |
4f2d528d | 1826 | |
cd0ed1db | 1827 | return p; |
013b87c0 LP |
1828 | } |
1829 | ||
8e274523 | 1830 | int unit_add_cgroup_from_text(Unit *u, const char *name) { |
013b87c0 LP |
1831 | char *controller = NULL, *path = NULL; |
1832 | CGroupBonding *b = NULL; | |
e025b4c3 | 1833 | bool ours = false; |
8e274523 LP |
1834 | int r; |
1835 | ||
1836 | assert(u); | |
1837 | assert(name); | |
1838 | ||
35d2e7ec LP |
1839 | if ((r = cg_split_spec(name, &controller, &path)) < 0) |
1840 | return r; | |
8e274523 | 1841 | |
e025b4c3 | 1842 | if (!path) { |
35d2e7ec | 1843 | path = default_cgroup_path(u); |
e025b4c3 LP |
1844 | ours = true; |
1845 | } | |
013b87c0 | 1846 | |
e025b4c3 | 1847 | if (!controller) { |
55096547 | 1848 | controller = strdup(SYSTEMD_CGROUP_CONTROLLER); |
e025b4c3 LP |
1849 | ours = true; |
1850 | } | |
013b87c0 | 1851 | |
35d2e7ec LP |
1852 | if (!path || !controller) { |
1853 | free(path); | |
1854 | free(controller); | |
1855 | ||
1856 | return -ENOMEM; | |
8e274523 LP |
1857 | } |
1858 | ||
013b87c0 LP |
1859 | if (cgroup_bonding_find_list(u->meta.cgroup_bondings, controller)) { |
1860 | r = -EEXIST; | |
1861 | goto fail; | |
1862 | } | |
8e274523 | 1863 | |
013b87c0 | 1864 | if (!(b = new0(CGroupBonding, 1))) { |
8e274523 LP |
1865 | r = -ENOMEM; |
1866 | goto fail; | |
1867 | } | |
1868 | ||
013b87c0 LP |
1869 | b->controller = controller; |
1870 | b->path = path; | |
e025b4c3 LP |
1871 | b->ours = ours; |
1872 | b->essential = streq(controller, SYSTEMD_CGROUP_CONTROLLER); | |
8e274523 LP |
1873 | |
1874 | if ((r = unit_add_cgroup(u, b)) < 0) | |
1875 | goto fail; | |
1876 | ||
1877 | return 0; | |
1878 | ||
1879 | fail: | |
013b87c0 LP |
1880 | free(path); |
1881 | free(controller); | |
8e274523 LP |
1882 | free(b); |
1883 | ||
1884 | return r; | |
1885 | } | |
1886 | ||
06d4c99a | 1887 | static int unit_add_one_default_cgroup(Unit *u, const char *controller) { |
d686d8a9 | 1888 | CGroupBonding *b = NULL; |
8e274523 LP |
1889 | int r = -ENOMEM; |
1890 | ||
1891 | assert(u); | |
1892 | ||
06d4c99a LP |
1893 | if (!controller) |
1894 | controller = SYSTEMD_CGROUP_CONTROLLER; | |
8e274523 | 1895 | |
06d4c99a LP |
1896 | if (cgroup_bonding_find_list(u->meta.cgroup_bondings, controller)) |
1897 | return 0; | |
8e274523 | 1898 | |
06d4c99a LP |
1899 | if (!(b = new0(CGroupBonding, 1))) |
1900 | return -ENOMEM; | |
8e274523 | 1901 | |
06d4c99a LP |
1902 | if (!(b->controller = strdup(controller))) |
1903 | goto fail; | |
d686d8a9 | 1904 | |
06d4c99a LP |
1905 | if (!(b->path = default_cgroup_path(u))) |
1906 | goto fail; | |
d686d8a9 | 1907 | |
06d4c99a LP |
1908 | b->ours = true; |
1909 | b->essential = streq(controller, SYSTEMD_CGROUP_CONTROLLER); | |
d686d8a9 | 1910 | |
06d4c99a LP |
1911 | if ((r = unit_add_cgroup(u, b)) < 0) |
1912 | goto fail; | |
8e274523 LP |
1913 | |
1914 | return 0; | |
1915 | ||
1916 | fail: | |
06d4c99a LP |
1917 | free(b->path); |
1918 | free(b->controller); | |
1919 | free(b); | |
8e274523 LP |
1920 | |
1921 | return r; | |
1922 | } | |
1923 | ||
06d4c99a | 1924 | int unit_add_default_cgroups(Unit *u) { |
ab1f0633 | 1925 | CGroupAttribute *a; |
06d4c99a LP |
1926 | char **c; |
1927 | int r; | |
ab1f0633 | 1928 | |
06d4c99a LP |
1929 | assert(u); |
1930 | ||
1931 | /* Adds in the default cgroups, if they weren't specified | |
1932 | * otherwise. */ | |
1933 | ||
df18d8c8 LP |
1934 | if (!u->meta.manager->cgroup_hierarchy) |
1935 | return 0; | |
1936 | ||
06d4c99a LP |
1937 | if ((r = unit_add_one_default_cgroup(u, NULL)) < 0) |
1938 | return r; | |
1939 | ||
1940 | STRV_FOREACH(c, u->meta.manager->default_controllers) | |
ab1f0633 LP |
1941 | unit_add_one_default_cgroup(u, *c); |
1942 | ||
1943 | LIST_FOREACH(by_unit, a, u->meta.cgroup_attributes) | |
1944 | unit_add_one_default_cgroup(u, a->controller); | |
06d4c99a LP |
1945 | |
1946 | return 0; | |
1947 | } | |
1948 | ||
8e274523 LP |
1949 | CGroupBonding* unit_get_default_cgroup(Unit *u) { |
1950 | assert(u); | |
1951 | ||
55096547 | 1952 | return cgroup_bonding_find_list(u->meta.cgroup_bondings, SYSTEMD_CGROUP_CONTROLLER); |
8e274523 LP |
1953 | } |
1954 | ||
ab1f0633 LP |
1955 | int unit_add_cgroup_attribute(Unit *u, const char *controller, const char *name, const char *value, CGroupAttributeMapCallback map_callback) { |
1956 | int r; | |
1957 | char *c = NULL; | |
1958 | CGroupAttribute *a; | |
1959 | ||
1960 | assert(u); | |
1961 | assert(name); | |
1962 | assert(value); | |
1963 | ||
1964 | if (!controller) { | |
1965 | const char *dot; | |
1966 | ||
1967 | dot = strchr(name, '.'); | |
1968 | if (!dot) | |
1969 | return -EINVAL; | |
1970 | ||
1971 | c = strndup(name, dot - name); | |
1972 | if (!c) | |
1973 | return -ENOMEM; | |
1974 | ||
1975 | controller = c; | |
1976 | } | |
1977 | ||
1978 | if (streq(controller, SYSTEMD_CGROUP_CONTROLLER)) { | |
1979 | r = -EINVAL; | |
1980 | goto finish; | |
1981 | } | |
1982 | ||
1983 | a = new0(CGroupAttribute, 1); | |
1984 | if (!a) { | |
1985 | r = -ENOMEM; | |
1986 | goto finish; | |
1987 | } | |
1988 | ||
1989 | if (c) { | |
1990 | a->controller = c; | |
1991 | c = NULL; | |
1992 | } else | |
1993 | a->controller = strdup(controller); | |
1994 | ||
1995 | a->name = strdup(name); | |
1996 | a->value = strdup(value); | |
1997 | ||
1998 | if (!a->controller || !a->name || !a->value) { | |
1999 | free(a->controller); | |
2000 | free(a->name); | |
2001 | free(a->value); | |
2002 | free(a); | |
2003 | ||
2004 | return -ENOMEM; | |
2005 | } | |
2006 | ||
2007 | a->map_callback = map_callback; | |
2008 | ||
2009 | LIST_PREPEND(CGroupAttribute, by_unit, u->meta.cgroup_attributes, a); | |
2010 | ||
2011 | r = 0; | |
2012 | ||
2013 | finish: | |
2014 | free(c); | |
2015 | return r; | |
2016 | } | |
2017 | ||
f6ff8c29 LP |
2018 | int unit_load_related_unit(Unit *u, const char *type, Unit **_found) { |
2019 | char *t; | |
2020 | int r; | |
2021 | ||
2022 | assert(u); | |
2023 | assert(type); | |
2024 | assert(_found); | |
2025 | ||
9e2f7c11 | 2026 | if (!(t = unit_name_change_suffix(u->meta.id, type))) |
f6ff8c29 LP |
2027 | return -ENOMEM; |
2028 | ||
2029 | assert(!unit_has_name(u, t)); | |
2030 | ||
398ef8ba | 2031 | r = manager_load_unit(u->meta.manager, t, NULL, NULL, _found); |
f6ff8c29 LP |
2032 | free(t); |
2033 | ||
9e2f7c11 | 2034 | assert(r < 0 || *_found != u); |
f6ff8c29 LP |
2035 | |
2036 | return r; | |
2037 | } | |
2038 | ||
a16e1123 LP |
2039 | int unit_get_related_unit(Unit *u, const char *type, Unit **_found) { |
2040 | Unit *found; | |
2041 | char *t; | |
2042 | ||
2043 | assert(u); | |
2044 | assert(type); | |
2045 | assert(_found); | |
2046 | ||
2047 | if (!(t = unit_name_change_suffix(u->meta.id, type))) | |
2048 | return -ENOMEM; | |
2049 | ||
2050 | assert(!unit_has_name(u, t)); | |
2051 | ||
2052 | found = manager_get_unit(u->meta.manager, t); | |
2053 | free(t); | |
2054 | ||
2055 | if (!found) | |
2056 | return -ENOENT; | |
2057 | ||
2058 | *_found = found; | |
2059 | return 0; | |
2060 | } | |
2061 | ||
9e2f7c11 LP |
2062 | static char *specifier_prefix_and_instance(char specifier, void *data, void *userdata) { |
2063 | Unit *u = userdata; | |
2064 | assert(u); | |
2065 | ||
2066 | return unit_name_to_prefix_and_instance(u->meta.id); | |
2067 | } | |
2068 | ||
2069 | static char *specifier_prefix(char specifier, void *data, void *userdata) { | |
2070 | Unit *u = userdata; | |
2071 | assert(u); | |
2072 | ||
2073 | return unit_name_to_prefix(u->meta.id); | |
2074 | } | |
2075 | ||
2076 | static char *specifier_prefix_unescaped(char specifier, void *data, void *userdata) { | |
2077 | Unit *u = userdata; | |
2078 | char *p, *r; | |
2079 | ||
2080 | assert(u); | |
2081 | ||
2082 | if (!(p = unit_name_to_prefix(u->meta.id))) | |
2083 | return NULL; | |
2084 | ||
2085 | r = unit_name_unescape(p); | |
2086 | free(p); | |
2087 | ||
2088 | return r; | |
2089 | } | |
2090 | ||
2091 | static char *specifier_instance_unescaped(char specifier, void *data, void *userdata) { | |
2092 | Unit *u = userdata; | |
2093 | assert(u); | |
2094 | ||
2095 | if (u->meta.instance) | |
2096 | return unit_name_unescape(u->meta.instance); | |
2097 | ||
2098 | return strdup(""); | |
2099 | } | |
2100 | ||
9fc50704 LP |
2101 | static char *specifier_filename(char specifier, void *data, void *userdata) { |
2102 | Unit *u = userdata; | |
2103 | assert(u); | |
2104 | ||
2105 | if (u->meta.instance) | |
2106 | return unit_name_path_unescape(u->meta.instance); | |
2107 | ||
2108 | return unit_name_to_path(u->meta.instance); | |
2109 | } | |
2110 | ||
0aef4345 LP |
2111 | static char *specifier_cgroup(char specifier, void *data, void *userdata) { |
2112 | Unit *u = userdata; | |
2113 | assert(u); | |
2114 | ||
2115 | return default_cgroup_path(u); | |
2116 | } | |
2117 | ||
2118 | static char *specifier_cgroup_root(char specifier, void *data, void *userdata) { | |
2119 | Unit *u = userdata; | |
2120 | char *p; | |
2121 | assert(u); | |
2122 | ||
2123 | if (specifier == 'r') | |
2124 | return strdup(u->meta.manager->cgroup_hierarchy); | |
2125 | ||
2126 | if (parent_of_path(u->meta.manager->cgroup_hierarchy, &p) < 0) | |
2127 | return strdup(""); | |
2128 | ||
2129 | if (streq(p, "/")) { | |
2130 | free(p); | |
2131 | return strdup(""); | |
2132 | } | |
2133 | ||
2134 | return p; | |
2135 | } | |
2136 | ||
2137 | static char *specifier_runtime(char specifier, void *data, void *userdata) { | |
2138 | Unit *u = userdata; | |
2139 | assert(u); | |
2140 | ||
2141 | if (u->meta.manager->running_as == MANAGER_USER) { | |
2142 | const char *e; | |
2143 | ||
2144 | e = getenv("XDG_RUNTIME_DIR"); | |
2145 | if (e) | |
2146 | return strdup(e); | |
2147 | } | |
2148 | ||
2149 | return strdup("/run"); | |
2150 | } | |
2151 | ||
9e2f7c11 LP |
2152 | char *unit_name_printf(Unit *u, const char* format) { |
2153 | ||
2154 | /* | |
2155 | * This will use the passed string as format string and | |
2156 | * replace the following specifiers: | |
2157 | * | |
2158 | * %n: the full id of the unit (foo@bar.waldo) | |
2159 | * %N: the id of the unit without the suffix (foo@bar) | |
2160 | * %p: the prefix (foo) | |
2161 | * %i: the instance (bar) | |
2162 | */ | |
2163 | ||
2164 | const Specifier table[] = { | |
2165 | { 'n', specifier_string, u->meta.id }, | |
2166 | { 'N', specifier_prefix_and_instance, NULL }, | |
2167 | { 'p', specifier_prefix, NULL }, | |
2168 | { 'i', specifier_string, u->meta.instance }, | |
2169 | { 0, NULL, NULL } | |
2170 | }; | |
2171 | ||
2172 | assert(u); | |
2173 | assert(format); | |
2174 | ||
2175 | return specifier_printf(format, table, u); | |
2176 | } | |
2177 | ||
2178 | char *unit_full_printf(Unit *u, const char *format) { | |
2179 | ||
2180 | /* This is similar to unit_name_printf() but also supports | |
0aef4345 LP |
2181 | * unescaping. Also, adds a couple of additional codes: |
2182 | * | |
2183 | * %c cgroup path of unit | |
2184 | * %r root cgroup path of this systemd instance (e.g. "/user/lennart/shared/systemd-4711") | |
2185 | * %R parent of root cgroup path (e.g. "/usr/lennart/shared") | |
2186 | * %t the runtime directory to place sockets in (e.g. "/run" or $XDG_RUNTIME_DIR) | |
2187 | */ | |
9e2f7c11 LP |
2188 | |
2189 | const Specifier table[] = { | |
2190 | { 'n', specifier_string, u->meta.id }, | |
2191 | { 'N', specifier_prefix_and_instance, NULL }, | |
2192 | { 'p', specifier_prefix, NULL }, | |
2193 | { 'P', specifier_prefix_unescaped, NULL }, | |
2194 | { 'i', specifier_string, u->meta.instance }, | |
2195 | { 'I', specifier_instance_unescaped, NULL }, | |
9fc50704 | 2196 | { 'f', specifier_filename, NULL }, |
0aef4345 LP |
2197 | { 'c', specifier_cgroup, NULL }, |
2198 | { 'r', specifier_cgroup_root, NULL }, | |
2199 | { 'R', specifier_cgroup_root, NULL }, | |
2200 | { 't', specifier_runtime, NULL }, | |
9e2f7c11 LP |
2201 | { 0, NULL, NULL } |
2202 | }; | |
2203 | ||
2204 | assert(u); | |
2205 | assert(format); | |
2206 | ||
2207 | return specifier_printf(format, table, u); | |
2208 | } | |
2209 | ||
2210 | char **unit_full_printf_strv(Unit *u, char **l) { | |
2211 | size_t n; | |
2212 | char **r, **i, **j; | |
2213 | ||
2214 | /* Applies unit_full_printf to every entry in l */ | |
2215 | ||
2216 | assert(u); | |
2217 | ||
2218 | n = strv_length(l); | |
2219 | if (!(r = new(char*, n+1))) | |
2220 | return NULL; | |
2221 | ||
2222 | for (i = l, j = r; *i; i++, j++) | |
2223 | if (!(*j = unit_full_printf(u, *i))) | |
2224 | goto fail; | |
2225 | ||
2226 | *j = NULL; | |
2227 | return r; | |
2228 | ||
2229 | fail: | |
da19d5c1 | 2230 | for (j--; j >= r; j--) |
9e2f7c11 LP |
2231 | free(*j); |
2232 | ||
2233 | free(r); | |
2234 | ||
2235 | return NULL; | |
2236 | } | |
2237 | ||
05e343b7 LP |
2238 | int unit_watch_bus_name(Unit *u, const char *name) { |
2239 | assert(u); | |
2240 | assert(name); | |
2241 | ||
2242 | /* Watch a specific name on the bus. We only support one unit | |
2243 | * watching each name for now. */ | |
2244 | ||
2245 | return hashmap_put(u->meta.manager->watch_bus, name, u); | |
2246 | } | |
2247 | ||
2248 | void unit_unwatch_bus_name(Unit *u, const char *name) { | |
2249 | assert(u); | |
2250 | assert(name); | |
2251 | ||
2252 | hashmap_remove_value(u->meta.manager->watch_bus, name, u); | |
2253 | } | |
2254 | ||
a16e1123 LP |
2255 | bool unit_can_serialize(Unit *u) { |
2256 | assert(u); | |
2257 | ||
2258 | return UNIT_VTABLE(u)->serialize && UNIT_VTABLE(u)->deserialize_item; | |
2259 | } | |
2260 | ||
2261 | int unit_serialize(Unit *u, FILE *f, FDSet *fds) { | |
2262 | int r; | |
2263 | ||
2264 | assert(u); | |
2265 | assert(f); | |
2266 | assert(fds); | |
2267 | ||
2268 | if (!unit_can_serialize(u)) | |
2269 | return 0; | |
2270 | ||
2271 | if ((r = UNIT_VTABLE(u)->serialize(u, f, fds)) < 0) | |
2272 | return r; | |
2273 | ||
cca098b0 LP |
2274 | if (u->meta.job) |
2275 | unit_serialize_item(u, f, "job", job_type_to_string(u->meta.job->type)); | |
2276 | ||
10717a1a LP |
2277 | dual_timestamp_serialize(f, "inactive-exit-timestamp", &u->meta.inactive_exit_timestamp); |
2278 | dual_timestamp_serialize(f, "active-enter-timestamp", &u->meta.active_enter_timestamp); | |
2279 | dual_timestamp_serialize(f, "active-exit-timestamp", &u->meta.active_exit_timestamp); | |
2280 | dual_timestamp_serialize(f, "inactive-enter-timestamp", &u->meta.inactive_enter_timestamp); | |
2791a8f8 LP |
2281 | dual_timestamp_serialize(f, "condition-timestamp", &u->meta.condition_timestamp); |
2282 | ||
2283 | if (dual_timestamp_is_set(&u->meta.condition_timestamp)) | |
2284 | unit_serialize_item(u, f, "condition-result", yes_no(u->meta.condition_result)); | |
10717a1a | 2285 | |
a16e1123 LP |
2286 | /* End marker */ |
2287 | fputc('\n', f); | |
2288 | return 0; | |
2289 | } | |
2290 | ||
2291 | void unit_serialize_item_format(Unit *u, FILE *f, const char *key, const char *format, ...) { | |
2292 | va_list ap; | |
2293 | ||
2294 | assert(u); | |
2295 | assert(f); | |
2296 | assert(key); | |
2297 | assert(format); | |
2298 | ||
2299 | fputs(key, f); | |
2300 | fputc('=', f); | |
2301 | ||
2302 | va_start(ap, format); | |
2303 | vfprintf(f, format, ap); | |
2304 | va_end(ap); | |
2305 | ||
2306 | fputc('\n', f); | |
2307 | } | |
2308 | ||
2309 | void unit_serialize_item(Unit *u, FILE *f, const char *key, const char *value) { | |
2310 | assert(u); | |
2311 | assert(f); | |
2312 | assert(key); | |
2313 | assert(value); | |
2314 | ||
2315 | fprintf(f, "%s=%s\n", key, value); | |
2316 | } | |
2317 | ||
2318 | int unit_deserialize(Unit *u, FILE *f, FDSet *fds) { | |
2319 | int r; | |
2320 | ||
2321 | assert(u); | |
2322 | assert(f); | |
2323 | assert(fds); | |
2324 | ||
2325 | if (!unit_can_serialize(u)) | |
2326 | return 0; | |
2327 | ||
2328 | for (;;) { | |
20c03b7b | 2329 | char line[LINE_MAX], *l, *v; |
a16e1123 LP |
2330 | size_t k; |
2331 | ||
2332 | if (!fgets(line, sizeof(line), f)) { | |
2333 | if (feof(f)) | |
2334 | return 0; | |
2335 | return -errno; | |
2336 | } | |
2337 | ||
10f8e83c | 2338 | char_array_0(line); |
a16e1123 LP |
2339 | l = strstrip(line); |
2340 | ||
2341 | /* End marker */ | |
2342 | if (l[0] == 0) | |
2343 | return 0; | |
2344 | ||
2345 | k = strcspn(l, "="); | |
2346 | ||
2347 | if (l[k] == '=') { | |
2348 | l[k] = 0; | |
2349 | v = l+k+1; | |
2350 | } else | |
2351 | v = l+k; | |
2352 | ||
cca098b0 LP |
2353 | if (streq(l, "job")) { |
2354 | JobType type; | |
2355 | ||
2356 | if ((type = job_type_from_string(v)) < 0) | |
2357 | log_debug("Failed to parse job type value %s", v); | |
2358 | else | |
2359 | u->meta.deserialized_job = type; | |
2360 | ||
2361 | continue; | |
8aaf019b | 2362 | } else if (streq(l, "inactive-exit-timestamp")) { |
799fd0fd | 2363 | dual_timestamp_deserialize(v, &u->meta.inactive_exit_timestamp); |
8aaf019b LP |
2364 | continue; |
2365 | } else if (streq(l, "active-enter-timestamp")) { | |
799fd0fd | 2366 | dual_timestamp_deserialize(v, &u->meta.active_enter_timestamp); |
8aaf019b LP |
2367 | continue; |
2368 | } else if (streq(l, "active-exit-timestamp")) { | |
799fd0fd | 2369 | dual_timestamp_deserialize(v, &u->meta.active_exit_timestamp); |
8aaf019b LP |
2370 | continue; |
2371 | } else if (streq(l, "inactive-enter-timestamp")) { | |
799fd0fd | 2372 | dual_timestamp_deserialize(v, &u->meta.inactive_enter_timestamp); |
8aaf019b | 2373 | continue; |
2791a8f8 LP |
2374 | } else if (streq(l, "condition-timestamp")) { |
2375 | dual_timestamp_deserialize(v, &u->meta.condition_timestamp); | |
2376 | continue; | |
2377 | } else if (streq(l, "condition-result")) { | |
2378 | int b; | |
2379 | ||
2380 | if ((b = parse_boolean(v)) < 0) | |
2381 | log_debug("Failed to parse condition result value %s", v); | |
2382 | else | |
2383 | u->meta.condition_result = b; | |
efbac6d2 LP |
2384 | |
2385 | continue; | |
8aaf019b | 2386 | } |
cca098b0 | 2387 | |
a16e1123 LP |
2388 | if ((r = UNIT_VTABLE(u)->deserialize_item(u, l, v, fds)) < 0) |
2389 | return r; | |
2390 | } | |
2391 | } | |
2392 | ||
6e2ef85b LP |
2393 | int unit_add_node_link(Unit *u, const char *what, bool wants) { |
2394 | Unit *device; | |
2395 | char *e; | |
2396 | int r; | |
2397 | ||
2398 | assert(u); | |
2399 | ||
2400 | if (!what) | |
2401 | return 0; | |
2402 | ||
2403 | /* Adds in links to the device node that this unit is based on */ | |
2404 | ||
8407a5d0 | 2405 | if (!is_device_path(what)) |
6e2ef85b LP |
2406 | return 0; |
2407 | ||
2408 | if (!(e = unit_name_build_escape(what+1, NULL, ".device"))) | |
2409 | return -ENOMEM; | |
2410 | ||
398ef8ba | 2411 | r = manager_load_unit(u->meta.manager, e, NULL, NULL, &device); |
6e2ef85b LP |
2412 | free(e); |
2413 | ||
2414 | if (r < 0) | |
2415 | return r; | |
2416 | ||
b81884e7 | 2417 | if ((r = unit_add_two_dependencies(u, UNIT_AFTER, UNIT_BIND_TO, device, true)) < 0) |
6e2ef85b LP |
2418 | return r; |
2419 | ||
2420 | if (wants) | |
2421 | if ((r = unit_add_dependency(device, UNIT_WANTS, u, false)) < 0) | |
2422 | return r; | |
2423 | ||
2424 | return 0; | |
2425 | } | |
a16e1123 | 2426 | |
cca098b0 LP |
2427 | int unit_coldplug(Unit *u) { |
2428 | int r; | |
2429 | ||
2430 | assert(u); | |
2431 | ||
2432 | if (UNIT_VTABLE(u)->coldplug) | |
2433 | if ((r = UNIT_VTABLE(u)->coldplug(u)) < 0) | |
2434 | return r; | |
2435 | ||
2436 | if (u->meta.deserialized_job >= 0) { | |
cebe0d41 | 2437 | if ((r = manager_add_job(u->meta.manager, u->meta.deserialized_job, u, JOB_IGNORE_REQUIREMENTS, false, NULL, NULL)) < 0) |
cca098b0 LP |
2438 | return r; |
2439 | ||
2440 | u->meta.deserialized_job = _JOB_TYPE_INVALID; | |
2441 | } | |
2442 | ||
2443 | return 0; | |
2444 | } | |
2445 | ||
5831e9b7 | 2446 | void unit_status_printf(Unit *u, const char *status, const char *format, ...) { |
9e58ff9c LP |
2447 | va_list ap; |
2448 | ||
2449 | assert(u); | |
2450 | assert(format); | |
2451 | ||
2452 | if (!UNIT_VTABLE(u)->show_status) | |
2453 | return; | |
2454 | ||
27d340c7 | 2455 | if (!manager_get_show_status(u->meta.manager)) |
9e58ff9c LP |
2456 | return; |
2457 | ||
2458 | if (!manager_is_booting_or_shutting_down(u->meta.manager)) | |
2459 | return; | |
2460 | ||
2461 | va_start(ap, format); | |
67e5cc4f | 2462 | status_vprintf(status, true, format, ap); |
9e58ff9c LP |
2463 | va_end(ap); |
2464 | } | |
2465 | ||
45fb0699 | 2466 | bool unit_need_daemon_reload(Unit *u) { |
45fb0699 LP |
2467 | assert(u); |
2468 | ||
5f4b19f4 LP |
2469 | if (u->meta.fragment_path) { |
2470 | struct stat st; | |
45fb0699 | 2471 | |
5f4b19f4 LP |
2472 | zero(st); |
2473 | if (stat(u->meta.fragment_path, &st) < 0) | |
2474 | /* What, cannot access this anymore? */ | |
2475 | return true; | |
45fb0699 | 2476 | |
5f4b19f4 LP |
2477 | if (u->meta.fragment_mtime > 0 && |
2478 | timespec_load(&st.st_mtim) != u->meta.fragment_mtime) | |
2479 | return true; | |
2480 | } | |
2481 | ||
2482 | if (UNIT_VTABLE(u)->need_daemon_reload) | |
2483 | return UNIT_VTABLE(u)->need_daemon_reload(u); | |
2484 | ||
2485 | return false; | |
45fb0699 LP |
2486 | } |
2487 | ||
fdf20a31 | 2488 | void unit_reset_failed(Unit *u) { |
5632e374 LP |
2489 | assert(u); |
2490 | ||
fdf20a31 MM |
2491 | if (UNIT_VTABLE(u)->reset_failed) |
2492 | UNIT_VTABLE(u)->reset_failed(u); | |
5632e374 LP |
2493 | } |
2494 | ||
a7f241db LP |
2495 | Unit *unit_following(Unit *u) { |
2496 | assert(u); | |
2497 | ||
2498 | if (UNIT_VTABLE(u)->following) | |
2499 | return UNIT_VTABLE(u)->following(u); | |
2500 | ||
2501 | return NULL; | |
2502 | } | |
2503 | ||
18ffdfda LP |
2504 | bool unit_pending_inactive(Unit *u) { |
2505 | assert(u); | |
2506 | ||
2507 | /* Returns true if the unit is inactive or going down */ | |
2508 | ||
2509 | if (UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))) | |
2510 | return true; | |
2511 | ||
2512 | if (u->meta.job && u->meta.job->type == JOB_STOP) | |
2513 | return true; | |
2514 | ||
2515 | return false; | |
2516 | } | |
2517 | ||
f976f3f6 LP |
2518 | bool unit_pending_active(Unit *u) { |
2519 | assert(u); | |
2520 | ||
f60c2665 | 2521 | /* Returns true if the unit is active or going up */ |
f976f3f6 LP |
2522 | |
2523 | if (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) | |
2524 | return true; | |
2525 | ||
2526 | if (u->meta.job && | |
2527 | (u->meta.job->type == JOB_START || | |
2528 | u->meta.job->type == JOB_RELOAD_OR_START || | |
2529 | u->meta.job->type == JOB_RESTART)) | |
2530 | return true; | |
2531 | ||
2532 | return false; | |
2533 | } | |
2534 | ||
71fad675 LP |
2535 | UnitType unit_name_to_type(const char *n) { |
2536 | UnitType t; | |
2537 | ||
2538 | assert(n); | |
2539 | ||
2540 | for (t = 0; t < _UNIT_TYPE_MAX; t++) | |
2541 | if (endswith(n, unit_vtable[t]->suffix)) | |
2542 | return t; | |
2543 | ||
2544 | return _UNIT_TYPE_INVALID; | |
2545 | } | |
2546 | ||
b9c0d441 | 2547 | bool unit_name_is_valid(const char *n, bool template_ok) { |
71fad675 LP |
2548 | UnitType t; |
2549 | ||
2550 | t = unit_name_to_type(n); | |
2551 | if (t < 0 || t >= _UNIT_TYPE_MAX) | |
2552 | return false; | |
2553 | ||
b9c0d441 | 2554 | return unit_name_is_valid_no_type(n, template_ok); |
71fad675 LP |
2555 | } |
2556 | ||
8a0867d6 LP |
2557 | int unit_kill(Unit *u, KillWho w, KillMode m, int signo, DBusError *error) { |
2558 | assert(u); | |
2559 | assert(w >= 0 && w < _KILL_WHO_MAX); | |
2560 | assert(m >= 0 && m < _KILL_MODE_MAX); | |
2561 | assert(signo > 0); | |
2562 | assert(signo < _NSIG); | |
2563 | ||
2564 | if (m == KILL_NONE) | |
2565 | return 0; | |
2566 | ||
2567 | if (!UNIT_VTABLE(u)->kill) | |
2568 | return -ENOTSUP; | |
2569 | ||
2570 | return UNIT_VTABLE(u)->kill(u, w, m, signo, error); | |
2571 | } | |
2572 | ||
6210e7fc LP |
2573 | int unit_following_set(Unit *u, Set **s) { |
2574 | assert(u); | |
2575 | assert(s); | |
2576 | ||
2577 | if (UNIT_VTABLE(u)->following_set) | |
2578 | return UNIT_VTABLE(u)->following_set(u, s); | |
2579 | ||
2580 | *s = NULL; | |
2581 | return 0; | |
2582 | } | |
2583 | ||
a4375746 LP |
2584 | UnitFileState unit_get_unit_file_state(Unit *u) { |
2585 | assert(u); | |
2586 | ||
2587 | if (u->meta.unit_file_state < 0 && u->meta.fragment_path) | |
2588 | u->meta.unit_file_state = unit_file_get_state( | |
2589 | u->meta.manager->running_as == MANAGER_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER, | |
2590 | NULL, file_name_from_path(u->meta.fragment_path)); | |
2591 | ||
2592 | return u->meta.unit_file_state; | |
2593 | } | |
2594 | ||
94f04347 LP |
2595 | static const char* const unit_load_state_table[_UNIT_LOAD_STATE_MAX] = { |
2596 | [UNIT_STUB] = "stub", | |
2597 | [UNIT_LOADED] = "loaded", | |
fdf20a31 | 2598 | [UNIT_ERROR] = "error", |
00dc5d76 | 2599 | [UNIT_MERGED] = "merged", |
6daf4f90 | 2600 | [UNIT_MASKED] = "masked" |
94f04347 LP |
2601 | }; |
2602 | ||
2603 | DEFINE_STRING_TABLE_LOOKUP(unit_load_state, UnitLoadState); | |
2604 | ||
2605 | static const char* const unit_active_state_table[_UNIT_ACTIVE_STATE_MAX] = { | |
2606 | [UNIT_ACTIVE] = "active", | |
032ff4af | 2607 | [UNIT_RELOADING] = "reloading", |
94f04347 | 2608 | [UNIT_INACTIVE] = "inactive", |
fdf20a31 | 2609 | [UNIT_FAILED] = "failed", |
94f04347 LP |
2610 | [UNIT_ACTIVATING] = "activating", |
2611 | [UNIT_DEACTIVATING] = "deactivating" | |
2612 | }; | |
2613 | ||
2614 | DEFINE_STRING_TABLE_LOOKUP(unit_active_state, UnitActiveState); | |
2615 | ||
2616 | static const char* const unit_dependency_table[_UNIT_DEPENDENCY_MAX] = { | |
2617 | [UNIT_REQUIRES] = "Requires", | |
9e2f7c11 | 2618 | [UNIT_REQUIRES_OVERRIDABLE] = "RequiresOverridable", |
94f04347 LP |
2619 | [UNIT_WANTS] = "Wants", |
2620 | [UNIT_REQUISITE] = "Requisite", | |
9e2f7c11 | 2621 | [UNIT_REQUISITE_OVERRIDABLE] = "RequisiteOverridable", |
94f04347 | 2622 | [UNIT_REQUIRED_BY] = "RequiredBy", |
9e2f7c11 | 2623 | [UNIT_REQUIRED_BY_OVERRIDABLE] = "RequiredByOverridable", |
b81884e7 | 2624 | [UNIT_BIND_TO] = "BindTo", |
94f04347 LP |
2625 | [UNIT_WANTED_BY] = "WantedBy", |
2626 | [UNIT_CONFLICTS] = "Conflicts", | |
69dd2852 | 2627 | [UNIT_CONFLICTED_BY] = "ConflictedBy", |
b81884e7 | 2628 | [UNIT_BOUND_BY] = "BoundBy", |
94f04347 LP |
2629 | [UNIT_BEFORE] = "Before", |
2630 | [UNIT_AFTER] = "After", | |
701cc384 | 2631 | [UNIT_REFERENCES] = "References", |
5de9682c LP |
2632 | [UNIT_REFERENCED_BY] = "ReferencedBy", |
2633 | [UNIT_ON_FAILURE] = "OnFailure" | |
94f04347 LP |
2634 | }; |
2635 | ||
2636 | DEFINE_STRING_TABLE_LOOKUP(unit_dependency, UnitDependency); |