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Commit | Line | Data |
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87f0e418 LP |
1 | /*-*- Mode: C; c-basic-offset: 8 -*-*/ |
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" |
87f0e418 LP |
44 | |
45 | const UnitVTable * const unit_vtable[_UNIT_TYPE_MAX] = { | |
46 | [UNIT_SERVICE] = &service_vtable, | |
47 | [UNIT_TIMER] = &timer_vtable, | |
48 | [UNIT_SOCKET] = &socket_vtable, | |
49 | [UNIT_TARGET] = &target_vtable, | |
50 | [UNIT_DEVICE] = &device_vtable, | |
51 | [UNIT_MOUNT] = &mount_vtable, | |
52 | [UNIT_AUTOMOUNT] = &automount_vtable, | |
07b0b134 | 53 | [UNIT_SNAPSHOT] = &snapshot_vtable, |
01f78473 LP |
54 | [UNIT_SWAP] = &swap_vtable, |
55 | [UNIT_PATH] = &path_vtable | |
87f0e418 LP |
56 | }; |
57 | ||
87f0e418 LP |
58 | Unit *unit_new(Manager *m) { |
59 | Unit *u; | |
60 | ||
61 | assert(m); | |
62 | ||
63 | if (!(u = new0(Unit, 1))) | |
64 | return NULL; | |
65 | ||
66 | if (!(u->meta.names = set_new(string_hash_func, string_compare_func))) { | |
67 | free(u); | |
68 | return NULL; | |
69 | } | |
70 | ||
71 | u->meta.manager = m; | |
72 | u->meta.type = _UNIT_TYPE_INVALID; | |
cca098b0 | 73 | u->meta.deserialized_job = _JOB_TYPE_INVALID; |
a40eb732 | 74 | u->meta.default_dependencies = true; |
87f0e418 LP |
75 | |
76 | return u; | |
77 | } | |
78 | ||
f278026d LP |
79 | bool unit_has_name(Unit *u, const char *name) { |
80 | assert(u); | |
81 | assert(name); | |
82 | ||
83 | return !!set_get(u->meta.names, (char*) name); | |
84 | } | |
85 | ||
87f0e418 LP |
86 | int unit_add_name(Unit *u, const char *text) { |
87 | UnitType t; | |
276c3e78 | 88 | char *s, *i = NULL; |
87f0e418 LP |
89 | int r; |
90 | ||
91 | assert(u); | |
92 | assert(text); | |
93 | ||
9e2f7c11 LP |
94 | if (unit_name_is_template(text)) { |
95 | if (!u->meta.instance) | |
96 | return -EINVAL; | |
87f0e418 | 97 | |
9e2f7c11 LP |
98 | s = unit_name_replace_instance(text, u->meta.instance); |
99 | } else | |
100 | s = strdup(text); | |
87f0e418 | 101 | |
9e2f7c11 LP |
102 | if (!s) |
103 | return -ENOMEM; | |
87f0e418 | 104 | |
9e2f7c11 LP |
105 | if (!unit_name_is_valid(s)) { |
106 | r = -EINVAL; | |
107 | goto fail; | |
108 | } | |
e537352b | 109 | |
9e2f7c11 | 110 | assert_se((t = unit_name_to_type(s)) >= 0); |
87f0e418 | 111 | |
9e2f7c11 LP |
112 | if (u->meta.type != _UNIT_TYPE_INVALID && t != u->meta.type) { |
113 | r = -EINVAL; | |
114 | goto fail; | |
115 | } | |
87f0e418 | 116 | |
9e2f7c11 LP |
117 | if ((r = unit_name_to_instance(s, &i)) < 0) |
118 | goto fail; | |
87f0e418 | 119 | |
9e2f7c11 LP |
120 | if (i && unit_vtable[t]->no_instances) |
121 | goto fail; | |
122 | ||
276c3e78 LP |
123 | /* Ensure that this unit is either instanced or not instanced, |
124 | * but not both. */ | |
125 | if (u->meta.type != _UNIT_TYPE_INVALID && !u->meta.instance != !i) { | |
9e2f7c11 LP |
126 | r = -EINVAL; |
127 | goto fail; | |
128 | } | |
129 | ||
130 | if (unit_vtable[t]->no_alias && | |
131 | !set_isempty(u->meta.names) && | |
132 | !set_get(u->meta.names, s)) { | |
133 | r = -EEXIST; | |
134 | goto fail; | |
135 | } | |
136 | ||
4f0f902f LP |
137 | if (hashmap_size(u->meta.manager->units) >= MANAGER_MAX_NAMES) { |
138 | r = -E2BIG; | |
139 | goto fail; | |
140 | } | |
141 | ||
9e2f7c11 LP |
142 | if ((r = set_put(u->meta.names, s)) < 0) { |
143 | if (r == -EEXIST) | |
144 | r = 0; | |
145 | goto fail; | |
87f0e418 LP |
146 | } |
147 | ||
148 | if ((r = hashmap_put(u->meta.manager->units, s, u)) < 0) { | |
149 | set_remove(u->meta.names, s); | |
9e2f7c11 | 150 | goto fail; |
87f0e418 LP |
151 | } |
152 | ||
e537352b | 153 | if (u->meta.type == _UNIT_TYPE_INVALID) { |
ef734fd6 | 154 | |
e537352b | 155 | u->meta.type = t; |
9e2f7c11 LP |
156 | u->meta.id = s; |
157 | u->meta.instance = i; | |
158 | ||
159 | LIST_PREPEND(Meta, units_per_type, u->meta.manager->units_per_type[t], &u->meta); | |
e537352b LP |
160 | |
161 | if (UNIT_VTABLE(u)->init) | |
162 | UNIT_VTABLE(u)->init(u); | |
9e2f7c11 LP |
163 | } else |
164 | free(i); | |
87f0e418 | 165 | |
c1e1601e | 166 | unit_add_to_dbus_queue(u); |
87f0e418 | 167 | return 0; |
9e2f7c11 LP |
168 | |
169 | fail: | |
170 | free(s); | |
171 | free(i); | |
172 | ||
173 | return r; | |
87f0e418 LP |
174 | } |
175 | ||
0ae97ec1 | 176 | int unit_choose_id(Unit *u, const char *name) { |
276c3e78 LP |
177 | char *s, *t = NULL, *i; |
178 | int r; | |
0ae97ec1 LP |
179 | |
180 | assert(u); | |
181 | assert(name); | |
182 | ||
9e2f7c11 LP |
183 | if (unit_name_is_template(name)) { |
184 | ||
185 | if (!u->meta.instance) | |
186 | return -EINVAL; | |
187 | ||
188 | if (!(t = unit_name_replace_instance(name, u->meta.instance))) | |
189 | return -ENOMEM; | |
190 | ||
191 | name = t; | |
192 | } | |
193 | ||
0ae97ec1 | 194 | /* Selects one of the names of this unit as the id */ |
9e2f7c11 LP |
195 | s = set_get(u->meta.names, (char*) name); |
196 | free(t); | |
0ae97ec1 | 197 | |
9e2f7c11 | 198 | if (!s) |
0ae97ec1 LP |
199 | return -ENOENT; |
200 | ||
276c3e78 LP |
201 | if ((r = unit_name_to_instance(s, &i)) < 0) |
202 | return r; | |
203 | ||
0ae97ec1 | 204 | u->meta.id = s; |
276c3e78 LP |
205 | |
206 | free(u->meta.instance); | |
207 | u->meta.instance = i; | |
208 | ||
c1e1601e | 209 | unit_add_to_dbus_queue(u); |
9e2f7c11 | 210 | |
0ae97ec1 LP |
211 | return 0; |
212 | } | |
213 | ||
f50e0a01 LP |
214 | int unit_set_description(Unit *u, const char *description) { |
215 | char *s; | |
216 | ||
217 | assert(u); | |
218 | ||
219 | if (!(s = strdup(description))) | |
220 | return -ENOMEM; | |
221 | ||
222 | free(u->meta.description); | |
223 | u->meta.description = s; | |
c1e1601e LP |
224 | |
225 | unit_add_to_dbus_queue(u); | |
f50e0a01 LP |
226 | return 0; |
227 | } | |
228 | ||
701cc384 LP |
229 | bool unit_check_gc(Unit *u) { |
230 | assert(u); | |
231 | ||
b86d44e5 LP |
232 | if (u->meta.load_state == UNIT_STUB) |
233 | return true; | |
234 | ||
701cc384 LP |
235 | if (UNIT_VTABLE(u)->no_gc) |
236 | return true; | |
237 | ||
238 | if (u->meta.job) | |
239 | return true; | |
240 | ||
241 | if (unit_active_state(u) != UNIT_INACTIVE) | |
242 | return true; | |
243 | ||
244 | if (UNIT_VTABLE(u)->check_gc) | |
245 | if (UNIT_VTABLE(u)->check_gc(u)) | |
246 | return true; | |
247 | ||
248 | return false; | |
249 | } | |
250 | ||
87f0e418 LP |
251 | void unit_add_to_load_queue(Unit *u) { |
252 | assert(u); | |
819e213f | 253 | assert(u->meta.type != _UNIT_TYPE_INVALID); |
87f0e418 LP |
254 | |
255 | if (u->meta.load_state != UNIT_STUB || u->meta.in_load_queue) | |
256 | return; | |
257 | ||
258 | LIST_PREPEND(Meta, load_queue, u->meta.manager->load_queue, &u->meta); | |
259 | u->meta.in_load_queue = true; | |
260 | } | |
261 | ||
23a177ef LP |
262 | void unit_add_to_cleanup_queue(Unit *u) { |
263 | assert(u); | |
264 | ||
265 | if (u->meta.in_cleanup_queue) | |
266 | return; | |
267 | ||
268 | LIST_PREPEND(Meta, cleanup_queue, u->meta.manager->cleanup_queue, &u->meta); | |
269 | u->meta.in_cleanup_queue = true; | |
270 | } | |
271 | ||
701cc384 LP |
272 | void unit_add_to_gc_queue(Unit *u) { |
273 | assert(u); | |
274 | ||
275 | if (u->meta.in_gc_queue || u->meta.in_cleanup_queue) | |
276 | return; | |
277 | ||
278 | if (unit_check_gc(u)) | |
279 | return; | |
280 | ||
281 | LIST_PREPEND(Meta, gc_queue, u->meta.manager->gc_queue, &u->meta); | |
282 | u->meta.in_gc_queue = true; | |
283 | ||
284 | u->meta.manager->n_in_gc_queue ++; | |
285 | ||
286 | if (u->meta.manager->gc_queue_timestamp <= 0) | |
287 | u->meta.manager->gc_queue_timestamp = now(CLOCK_MONOTONIC); | |
288 | } | |
289 | ||
c1e1601e LP |
290 | void unit_add_to_dbus_queue(Unit *u) { |
291 | assert(u); | |
819e213f | 292 | assert(u->meta.type != _UNIT_TYPE_INVALID); |
c1e1601e | 293 | |
94b6dfa2 | 294 | if (u->meta.load_state == UNIT_STUB || u->meta.in_dbus_queue) |
c1e1601e LP |
295 | return; |
296 | ||
a567261a LP |
297 | /* Shortcut things if nobody cares */ |
298 | if (!bus_has_subscriber(u->meta.manager)) { | |
94b6dfa2 LP |
299 | u->meta.sent_dbus_new_signal = true; |
300 | return; | |
301 | } | |
302 | ||
c1e1601e LP |
303 | LIST_PREPEND(Meta, dbus_queue, u->meta.manager->dbus_unit_queue, &u->meta); |
304 | u->meta.in_dbus_queue = true; | |
305 | } | |
306 | ||
87f0e418 LP |
307 | static void bidi_set_free(Unit *u, Set *s) { |
308 | Iterator i; | |
309 | Unit *other; | |
310 | ||
311 | assert(u); | |
312 | ||
313 | /* Frees the set and makes sure we are dropped from the | |
314 | * inverse pointers */ | |
315 | ||
316 | SET_FOREACH(other, s, i) { | |
317 | UnitDependency d; | |
318 | ||
319 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) | |
320 | set_remove(other->meta.dependencies[d], u); | |
701cc384 LP |
321 | |
322 | unit_add_to_gc_queue(other); | |
87f0e418 LP |
323 | } |
324 | ||
325 | set_free(s); | |
326 | } | |
327 | ||
328 | void unit_free(Unit *u) { | |
329 | UnitDependency d; | |
330 | Iterator i; | |
331 | char *t; | |
332 | ||
333 | assert(u); | |
334 | ||
c1e1601e LP |
335 | bus_unit_send_removed_signal(u); |
336 | ||
a013b84b LP |
337 | if (u->meta.load_state != UNIT_STUB) |
338 | if (UNIT_VTABLE(u)->done) | |
339 | UNIT_VTABLE(u)->done(u); | |
340 | ||
87f0e418 LP |
341 | SET_FOREACH(t, u->meta.names, i) |
342 | hashmap_remove_value(u->meta.manager->units, t, u); | |
343 | ||
964e0949 LP |
344 | if (u->meta.job) |
345 | job_free(u->meta.job); | |
346 | ||
347 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) | |
348 | bidi_set_free(u, u->meta.dependencies[d]); | |
349 | ||
ef734fd6 LP |
350 | if (u->meta.type != _UNIT_TYPE_INVALID) |
351 | LIST_REMOVE(Meta, units_per_type, u->meta.manager->units_per_type[u->meta.type], &u->meta); | |
352 | ||
87f0e418 LP |
353 | if (u->meta.in_load_queue) |
354 | LIST_REMOVE(Meta, load_queue, u->meta.manager->load_queue, &u->meta); | |
355 | ||
c1e1601e LP |
356 | if (u->meta.in_dbus_queue) |
357 | LIST_REMOVE(Meta, dbus_queue, u->meta.manager->dbus_unit_queue, &u->meta); | |
358 | ||
23a177ef LP |
359 | if (u->meta.in_cleanup_queue) |
360 | LIST_REMOVE(Meta, cleanup_queue, u->meta.manager->cleanup_queue, &u->meta); | |
361 | ||
701cc384 LP |
362 | if (u->meta.in_gc_queue) { |
363 | LIST_REMOVE(Meta, gc_queue, u->meta.manager->gc_queue, &u->meta); | |
364 | u->meta.manager->n_in_gc_queue--; | |
365 | } | |
366 | ||
e537352b | 367 | cgroup_bonding_free_list(u->meta.cgroup_bondings); |
87f0e418 | 368 | |
87f0e418 | 369 | free(u->meta.description); |
6be1e7d5 | 370 | free(u->meta.fragment_path); |
87f0e418 | 371 | |
53ec43c6 | 372 | set_free_free(u->meta.names); |
87f0e418 | 373 | |
9e2f7c11 LP |
374 | free(u->meta.instance); |
375 | ||
87f0e418 LP |
376 | free(u); |
377 | } | |
378 | ||
379 | UnitActiveState unit_active_state(Unit *u) { | |
380 | assert(u); | |
381 | ||
6124958c LP |
382 | if (u->meta.load_state == UNIT_MERGED) |
383 | return unit_active_state(unit_follow_merge(u)); | |
384 | ||
385 | /* After a reload it might happen that a unit is not correctly | |
386 | * loaded but still has a process around. That's why we won't | |
387 | * shortcut failed loading to UNIT_INACTIVE_MAINTENANCE. */ | |
87f0e418 LP |
388 | |
389 | return UNIT_VTABLE(u)->active_state(u); | |
390 | } | |
391 | ||
10a94420 LP |
392 | const char* unit_sub_state_to_string(Unit *u) { |
393 | assert(u); | |
394 | ||
395 | return UNIT_VTABLE(u)->sub_state_to_string(u); | |
396 | } | |
397 | ||
23a177ef LP |
398 | static void complete_move(Set **s, Set **other) { |
399 | assert(s); | |
400 | assert(other); | |
87f0e418 | 401 | |
23a177ef LP |
402 | if (!*other) |
403 | return; | |
87f0e418 LP |
404 | |
405 | if (*s) | |
23a177ef LP |
406 | set_move(*s, *other); |
407 | else { | |
408 | *s = *other; | |
409 | *other = NULL; | |
410 | } | |
411 | } | |
87f0e418 | 412 | |
23a177ef LP |
413 | static void merge_names(Unit *u, Unit *other) { |
414 | char *t; | |
415 | Iterator i; | |
87f0e418 | 416 | |
23a177ef LP |
417 | assert(u); |
418 | assert(other); | |
419 | ||
420 | complete_move(&u->meta.names, &other->meta.names); | |
421 | ||
53ec43c6 | 422 | set_free_free(other->meta.names); |
23a177ef LP |
423 | other->meta.names = NULL; |
424 | other->meta.id = NULL; | |
425 | ||
426 | SET_FOREACH(t, u->meta.names, i) | |
427 | assert_se(hashmap_replace(u->meta.manager->units, t, u) == 0); | |
87f0e418 LP |
428 | } |
429 | ||
23a177ef LP |
430 | static void merge_dependencies(Unit *u, Unit *other, UnitDependency d) { |
431 | Iterator i; | |
432 | Unit *back; | |
87f0e418 | 433 | int r; |
23a177ef LP |
434 | |
435 | assert(u); | |
436 | assert(other); | |
437 | assert(d < _UNIT_DEPENDENCY_MAX); | |
438 | ||
439 | SET_FOREACH(back, other->meta.dependencies[d], i) { | |
440 | UnitDependency k; | |
441 | ||
442 | for (k = 0; k < _UNIT_DEPENDENCY_MAX; k++) | |
443 | if ((r = set_remove_and_put(back->meta.dependencies[k], other, u)) < 0) { | |
444 | ||
445 | if (r == -EEXIST) | |
446 | set_remove(back->meta.dependencies[k], other); | |
447 | else | |
448 | assert(r == -ENOENT); | |
449 | } | |
450 | } | |
451 | ||
452 | complete_move(&u->meta.dependencies[d], &other->meta.dependencies[d]); | |
453 | ||
454 | set_free(other->meta.dependencies[d]); | |
455 | other->meta.dependencies[d] = NULL; | |
456 | } | |
457 | ||
458 | int unit_merge(Unit *u, Unit *other) { | |
87f0e418 LP |
459 | UnitDependency d; |
460 | ||
461 | assert(u); | |
462 | assert(other); | |
463 | assert(u->meta.manager == other->meta.manager); | |
9e2f7c11 | 464 | assert(u->meta.type != _UNIT_TYPE_INVALID); |
87f0e418 | 465 | |
cc916967 LP |
466 | other = unit_follow_merge(other); |
467 | ||
23a177ef LP |
468 | if (other == u) |
469 | return 0; | |
470 | ||
9e2f7c11 LP |
471 | if (u->meta.type != other->meta.type) |
472 | return -EINVAL; | |
473 | ||
276c3e78 | 474 | if (!u->meta.instance != !other->meta.instance) |
87f0e418 LP |
475 | return -EINVAL; |
476 | ||
cc916967 LP |
477 | if (other->meta.load_state != UNIT_STUB && |
478 | other->meta.load_state != UNIT_FAILED) | |
23a177ef | 479 | return -EEXIST; |
87f0e418 | 480 | |
819e213f LP |
481 | if (other->meta.job) |
482 | return -EEXIST; | |
483 | ||
6124958c | 484 | if (!UNIT_IS_INACTIVE_OR_MAINTENANCE(unit_active_state(other))) |
819e213f LP |
485 | return -EEXIST; |
486 | ||
87f0e418 | 487 | /* Merge names */ |
23a177ef | 488 | merge_names(u, other); |
87f0e418 LP |
489 | |
490 | /* Merge dependencies */ | |
491 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) | |
23a177ef | 492 | merge_dependencies(u, other, d); |
87f0e418 | 493 | |
23a177ef LP |
494 | other->meta.load_state = UNIT_MERGED; |
495 | other->meta.merged_into = u; | |
496 | ||
3616a49c LP |
497 | /* If there is still some data attached to the other node, we |
498 | * don't need it anymore, and can free it. */ | |
499 | if (other->meta.load_state != UNIT_STUB) | |
500 | if (UNIT_VTABLE(other)->done) | |
501 | UNIT_VTABLE(other)->done(other); | |
502 | ||
503 | unit_add_to_dbus_queue(u); | |
23a177ef LP |
504 | unit_add_to_cleanup_queue(other); |
505 | ||
506 | return 0; | |
507 | } | |
508 | ||
509 | int unit_merge_by_name(Unit *u, const char *name) { | |
510 | Unit *other; | |
9e2f7c11 LP |
511 | int r; |
512 | char *s = NULL; | |
23a177ef LP |
513 | |
514 | assert(u); | |
515 | assert(name); | |
516 | ||
9e2f7c11 LP |
517 | if (unit_name_is_template(name)) { |
518 | if (!u->meta.instance) | |
519 | return -EINVAL; | |
520 | ||
521 | if (!(s = unit_name_replace_instance(name, u->meta.instance))) | |
522 | return -ENOMEM; | |
523 | ||
524 | name = s; | |
525 | } | |
526 | ||
23a177ef | 527 | if (!(other = manager_get_unit(u->meta.manager, name))) |
9e2f7c11 LP |
528 | r = unit_add_name(u, name); |
529 | else | |
530 | r = unit_merge(u, other); | |
23a177ef | 531 | |
9e2f7c11 LP |
532 | free(s); |
533 | return r; | |
23a177ef LP |
534 | } |
535 | ||
536 | Unit* unit_follow_merge(Unit *u) { | |
537 | assert(u); | |
538 | ||
539 | while (u->meta.load_state == UNIT_MERGED) | |
540 | assert_se(u = u->meta.merged_into); | |
541 | ||
542 | return u; | |
543 | } | |
544 | ||
545 | int unit_add_exec_dependencies(Unit *u, ExecContext *c) { | |
546 | int r; | |
547 | ||
548 | assert(u); | |
549 | assert(c); | |
550 | ||
ecc6e2b8 LP |
551 | if (c->std_output != EXEC_OUTPUT_KMSG && |
552 | c->std_output != EXEC_OUTPUT_SYSLOG && | |
553 | c->std_error != EXEC_OUTPUT_KMSG && | |
554 | c->std_error != EXEC_OUTPUT_SYSLOG) | |
23a177ef LP |
555 | return 0; |
556 | ||
557 | /* If syslog or kernel logging is requested, make sure our own | |
558 | * logging daemon is run first. */ | |
559 | ||
701cc384 | 560 | if ((r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_LOGGER_SOCKET, NULL, true)) < 0) |
23a177ef LP |
561 | return r; |
562 | ||
a3d4e06d | 563 | if (u->meta.manager->running_as == MANAGER_SYSTEM) |
701cc384 | 564 | if ((r = unit_add_dependency_by_name(u, UNIT_REQUIRES, SPECIAL_LOGGER_SOCKET, NULL, true)) < 0) |
23a177ef LP |
565 | return r; |
566 | ||
87f0e418 LP |
567 | return 0; |
568 | } | |
569 | ||
87f0e418 LP |
570 | const char *unit_description(Unit *u) { |
571 | assert(u); | |
572 | ||
573 | if (u->meta.description) | |
574 | return u->meta.description; | |
575 | ||
9e2f7c11 | 576 | return u->meta.id; |
87f0e418 LP |
577 | } |
578 | ||
579 | void unit_dump(Unit *u, FILE *f, const char *prefix) { | |
87f0e418 LP |
580 | char *t; |
581 | UnitDependency d; | |
582 | Iterator i; | |
47be870b LP |
583 | char *p2; |
584 | const char *prefix2; | |
8e274523 | 585 | CGroupBonding *b; |
173e3821 LP |
586 | char |
587 | timestamp1[FORMAT_TIMESTAMP_MAX], | |
588 | timestamp2[FORMAT_TIMESTAMP_MAX], | |
589 | timestamp3[FORMAT_TIMESTAMP_MAX], | |
faf919f1 LP |
590 | timestamp4[FORMAT_TIMESTAMP_MAX], |
591 | timespan[FORMAT_TIMESPAN_MAX]; | |
a7f241db | 592 | Unit *following; |
87f0e418 LP |
593 | |
594 | assert(u); | |
9e2f7c11 | 595 | assert(u->meta.type >= 0); |
87f0e418 LP |
596 | |
597 | if (!prefix) | |
598 | prefix = ""; | |
47be870b LP |
599 | p2 = strappend(prefix, "\t"); |
600 | prefix2 = p2 ? p2 : prefix; | |
87f0e418 LP |
601 | |
602 | fprintf(f, | |
40d50879 | 603 | "%s-> Unit %s:\n" |
87f0e418 | 604 | "%s\tDescription: %s\n" |
9e2f7c11 | 605 | "%s\tInstance: %s\n" |
87f0e418 | 606 | "%s\tUnit Load State: %s\n" |
2fad8195 | 607 | "%s\tUnit Active State: %s\n" |
173e3821 | 608 | "%s\tInactive Exit Timestamp: %s\n" |
2fad8195 | 609 | "%s\tActive Enter Timestamp: %s\n" |
701cc384 | 610 | "%s\tActive Exit Timestamp: %s\n" |
173e3821 | 611 | "%s\tInactive Enter Timestamp: %s\n" |
45fb0699 LP |
612 | "%s\tGC Check Good: %s\n" |
613 | "%s\tNeed Daemon Reload: %s\n", | |
9e2f7c11 | 614 | prefix, u->meta.id, |
87f0e418 | 615 | prefix, unit_description(u), |
9e2f7c11 | 616 | prefix, strna(u->meta.instance), |
94f04347 | 617 | prefix, unit_load_state_to_string(u->meta.load_state), |
2fad8195 | 618 | prefix, unit_active_state_to_string(unit_active_state(u)), |
871d7de4 LP |
619 | prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->meta.inactive_exit_timestamp.realtime)), |
620 | prefix, strna(format_timestamp(timestamp2, sizeof(timestamp2), u->meta.active_enter_timestamp.realtime)), | |
621 | prefix, strna(format_timestamp(timestamp3, sizeof(timestamp3), u->meta.active_exit_timestamp.realtime)), | |
622 | prefix, strna(format_timestamp(timestamp4, sizeof(timestamp4), u->meta.inactive_enter_timestamp.realtime)), | |
45fb0699 LP |
623 | prefix, yes_no(unit_check_gc(u)), |
624 | prefix, yes_no(unit_need_daemon_reload(u))); | |
0301abf4 | 625 | |
87f0e418 LP |
626 | SET_FOREACH(t, u->meta.names, i) |
627 | fprintf(f, "%s\tName: %s\n", prefix, t); | |
628 | ||
a7f241db LP |
629 | if ((following = unit_following(u))) |
630 | fprintf(f, "%s\tFollowing: %s\n", prefix, following->meta.id); | |
8fe914ec | 631 | |
23a177ef LP |
632 | if (u->meta.fragment_path) |
633 | fprintf(f, "%s\tFragment Path: %s\n", prefix, u->meta.fragment_path); | |
634 | ||
faf919f1 LP |
635 | if (u->meta.job_timeout > 0) |
636 | fprintf(f, "%s\tJob Timeout: %s\n", prefix, format_timespan(timespan, sizeof(timespan), u->meta.job_timeout)); | |
637 | ||
87f0e418 LP |
638 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) { |
639 | Unit *other; | |
640 | ||
87f0e418 | 641 | SET_FOREACH(other, u->meta.dependencies[d], i) |
9e2f7c11 | 642 | fprintf(f, "%s\t%s: %s\n", prefix, unit_dependency_to_string(d), other->meta.id); |
87f0e418 LP |
643 | } |
644 | ||
23a177ef | 645 | if (u->meta.load_state == UNIT_LOADED) { |
b0650475 LP |
646 | fprintf(f, |
647 | "%s\tRecursive Stop: %s\n" | |
a40eb732 LP |
648 | "%s\tStopWhenUnneeded: %s\n" |
649 | "%s\tOnlyByDependency: %s\n" | |
3b6fdb5b LP |
650 | "%s\tDefaultDependencies: %s\n" |
651 | "%s\tIgnoreDependencyFailure: %s\n", | |
b0650475 | 652 | prefix, yes_no(u->meta.recursive_stop), |
a40eb732 LP |
653 | prefix, yes_no(u->meta.stop_when_unneeded), |
654 | prefix, yes_no(u->meta.only_by_dependency), | |
3b6fdb5b LP |
655 | prefix, yes_no(u->meta.default_dependencies), |
656 | prefix, yes_no(u->meta.ignore_dependency_failure)); | |
b0650475 | 657 | |
23a177ef LP |
658 | LIST_FOREACH(by_unit, b, u->meta.cgroup_bondings) |
659 | fprintf(f, "%s\tControlGroup: %s:%s\n", | |
660 | prefix, b->controller, b->path); | |
8e274523 | 661 | |
23a177ef LP |
662 | if (UNIT_VTABLE(u)->dump) |
663 | UNIT_VTABLE(u)->dump(u, f, prefix2); | |
b0650475 LP |
664 | |
665 | } else if (u->meta.load_state == UNIT_MERGED) | |
666 | fprintf(f, | |
667 | "%s\tMerged into: %s\n", | |
9e2f7c11 | 668 | prefix, u->meta.merged_into->meta.id); |
87f0e418 LP |
669 | |
670 | if (u->meta.job) | |
671 | job_dump(u->meta.job, f, prefix2); | |
672 | ||
47be870b | 673 | free(p2); |
87f0e418 LP |
674 | } |
675 | ||
676 | /* Common implementation for multiple backends */ | |
e537352b | 677 | int unit_load_fragment_and_dropin(Unit *u) { |
23a177ef LP |
678 | int r; |
679 | ||
680 | assert(u); | |
23a177ef LP |
681 | |
682 | /* Load a .service file */ | |
e537352b | 683 | if ((r = unit_load_fragment(u)) < 0) |
23a177ef LP |
684 | return r; |
685 | ||
e537352b | 686 | if (u->meta.load_state == UNIT_STUB) |
23a177ef LP |
687 | return -ENOENT; |
688 | ||
689 | /* Load drop-in directory data */ | |
690 | if ((r = unit_load_dropin(unit_follow_merge(u))) < 0) | |
691 | return r; | |
692 | ||
693 | return 0; | |
694 | } | |
695 | ||
696 | /* Common implementation for multiple backends */ | |
e537352b | 697 | int unit_load_fragment_and_dropin_optional(Unit *u) { |
23a177ef | 698 | int r; |
87f0e418 LP |
699 | |
700 | assert(u); | |
701 | ||
23a177ef LP |
702 | /* Same as unit_load_fragment_and_dropin(), but whether |
703 | * something can be loaded or not doesn't matter. */ | |
704 | ||
705 | /* Load a .service file */ | |
e537352b | 706 | if ((r = unit_load_fragment(u)) < 0) |
87f0e418 LP |
707 | return r; |
708 | ||
e537352b LP |
709 | if (u->meta.load_state == UNIT_STUB) |
710 | u->meta.load_state = UNIT_LOADED; | |
d46de8a1 | 711 | |
87f0e418 | 712 | /* Load drop-in directory data */ |
23a177ef | 713 | if ((r = unit_load_dropin(unit_follow_merge(u))) < 0) |
87f0e418 LP |
714 | return r; |
715 | ||
23a177ef | 716 | return 0; |
87f0e418 LP |
717 | } |
718 | ||
a16e1123 LP |
719 | /* Common implementation for multiple backends */ |
720 | int unit_load_nop(Unit *u) { | |
721 | assert(u); | |
722 | ||
723 | if (u->meta.load_state == UNIT_STUB) | |
724 | u->meta.load_state = UNIT_LOADED; | |
725 | ||
726 | return 0; | |
727 | } | |
728 | ||
87f0e418 LP |
729 | int unit_load(Unit *u) { |
730 | int r; | |
731 | ||
732 | assert(u); | |
733 | ||
734 | if (u->meta.in_load_queue) { | |
735 | LIST_REMOVE(Meta, load_queue, u->meta.manager->load_queue, &u->meta); | |
736 | u->meta.in_load_queue = false; | |
737 | } | |
738 | ||
e537352b LP |
739 | if (u->meta.type == _UNIT_TYPE_INVALID) |
740 | return -EINVAL; | |
741 | ||
87f0e418 LP |
742 | if (u->meta.load_state != UNIT_STUB) |
743 | return 0; | |
744 | ||
e537352b LP |
745 | if (UNIT_VTABLE(u)->load) |
746 | if ((r = UNIT_VTABLE(u)->load(u)) < 0) | |
87f0e418 | 747 | goto fail; |
23a177ef | 748 | |
e537352b | 749 | if (u->meta.load_state == UNIT_STUB) { |
23a177ef LP |
750 | r = -ENOENT; |
751 | goto fail; | |
752 | } | |
753 | ||
23a177ef LP |
754 | assert((u->meta.load_state != UNIT_MERGED) == !u->meta.merged_into); |
755 | ||
756 | unit_add_to_dbus_queue(unit_follow_merge(u)); | |
701cc384 | 757 | unit_add_to_gc_queue(u); |
87f0e418 | 758 | |
87f0e418 LP |
759 | return 0; |
760 | ||
761 | fail: | |
762 | u->meta.load_state = UNIT_FAILED; | |
c1e1601e | 763 | unit_add_to_dbus_queue(u); |
23a177ef | 764 | |
54165a39 | 765 | log_notice("Failed to load configuration for %s: %s", u->meta.id, strerror(-r)); |
23a177ef | 766 | |
87f0e418 LP |
767 | return r; |
768 | } | |
769 | ||
770 | /* Errors: | |
d5159713 LP |
771 | * -EBADR: This unit type does not support starting. |
772 | * -EALREADY: Unit is already started. | |
773 | * -EAGAIN: An operation is already in progress. Retry later. | |
774 | * -ECANCELED: Too many requests for now. | |
87f0e418 LP |
775 | */ |
776 | int unit_start(Unit *u) { | |
777 | UnitActiveState state; | |
778 | ||
779 | assert(u); | |
780 | ||
6124958c LP |
781 | if (u->meta.load_state != UNIT_LOADED) |
782 | return -EINVAL; | |
783 | ||
7898b0cf LP |
784 | /* If this is already (being) started, then this will |
785 | * succeed. Note that this will even succeed if this unit is | |
786 | * not startable by the user. This is relied on to detect when | |
787 | * we need to wait for units and when waiting is finished. */ | |
87f0e418 LP |
788 | state = unit_active_state(u); |
789 | if (UNIT_IS_ACTIVE_OR_RELOADING(state)) | |
790 | return -EALREADY; | |
791 | ||
7898b0cf LP |
792 | /* If it is stopped, but we cannot start it, then fail */ |
793 | if (!UNIT_VTABLE(u)->start) | |
794 | return -EBADR; | |
795 | ||
87f0e418 LP |
796 | /* We don't suppress calls to ->start() here when we are |
797 | * already starting, to allow this request to be used as a | |
798 | * "hurry up" call, for example when the unit is in some "auto | |
799 | * restart" state where it waits for a holdoff timer to elapse | |
800 | * before it will start again. */ | |
801 | ||
c1e1601e | 802 | unit_add_to_dbus_queue(u); |
9e58ff9c LP |
803 | |
804 | unit_status_printf(u, "Starting %s...\n", unit_description(u)); | |
805 | ||
87f0e418 LP |
806 | return UNIT_VTABLE(u)->start(u); |
807 | } | |
808 | ||
809 | bool unit_can_start(Unit *u) { | |
810 | assert(u); | |
811 | ||
812 | return !!UNIT_VTABLE(u)->start; | |
813 | } | |
814 | ||
815 | /* Errors: | |
816 | * -EBADR: This unit type does not support stopping. | |
817 | * -EALREADY: Unit is already stopped. | |
818 | * -EAGAIN: An operation is already in progress. Retry later. | |
819 | */ | |
820 | int unit_stop(Unit *u) { | |
821 | UnitActiveState state; | |
822 | ||
823 | assert(u); | |
824 | ||
87f0e418 | 825 | state = unit_active_state(u); |
6124958c | 826 | if (UNIT_IS_INACTIVE_OR_MAINTENANCE(state)) |
87f0e418 LP |
827 | return -EALREADY; |
828 | ||
7898b0cf LP |
829 | if (!UNIT_VTABLE(u)->stop) |
830 | return -EBADR; | |
831 | ||
c1e1601e | 832 | unit_add_to_dbus_queue(u); |
9e58ff9c LP |
833 | |
834 | unit_status_printf(u, "Stopping %s...\n", unit_description(u)); | |
835 | ||
87f0e418 LP |
836 | return UNIT_VTABLE(u)->stop(u); |
837 | } | |
838 | ||
839 | /* Errors: | |
840 | * -EBADR: This unit type does not support reloading. | |
841 | * -ENOEXEC: Unit is not started. | |
842 | * -EAGAIN: An operation is already in progress. Retry later. | |
843 | */ | |
844 | int unit_reload(Unit *u) { | |
845 | UnitActiveState state; | |
846 | ||
847 | assert(u); | |
848 | ||
6124958c LP |
849 | if (u->meta.load_state != UNIT_LOADED) |
850 | return -EINVAL; | |
851 | ||
87f0e418 LP |
852 | if (!unit_can_reload(u)) |
853 | return -EBADR; | |
854 | ||
855 | state = unit_active_state(u); | |
032ff4af | 856 | if (unit_active_state(u) == UNIT_RELOADING) |
87f0e418 LP |
857 | return -EALREADY; |
858 | ||
859 | if (unit_active_state(u) != UNIT_ACTIVE) | |
860 | return -ENOEXEC; | |
861 | ||
c1e1601e | 862 | unit_add_to_dbus_queue(u); |
87f0e418 LP |
863 | return UNIT_VTABLE(u)->reload(u); |
864 | } | |
865 | ||
866 | bool unit_can_reload(Unit *u) { | |
867 | assert(u); | |
868 | ||
869 | if (!UNIT_VTABLE(u)->reload) | |
870 | return false; | |
871 | ||
872 | if (!UNIT_VTABLE(u)->can_reload) | |
873 | return true; | |
874 | ||
875 | return UNIT_VTABLE(u)->can_reload(u); | |
876 | } | |
877 | ||
f3bff0eb LP |
878 | static void unit_check_uneeded(Unit *u) { |
879 | Iterator i; | |
880 | Unit *other; | |
881 | ||
882 | assert(u); | |
883 | ||
884 | /* If this service shall be shut down when unneeded then do | |
885 | * so. */ | |
886 | ||
887 | if (!u->meta.stop_when_unneeded) | |
888 | return; | |
889 | ||
890 | if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) | |
891 | return; | |
892 | ||
893 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRED_BY], i) | |
894 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) | |
895 | return; | |
896 | ||
9e2f7c11 | 897 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRED_BY_OVERRIDABLE], i) |
f3bff0eb LP |
898 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
899 | return; | |
900 | ||
901 | SET_FOREACH(other, u->meta.dependencies[UNIT_WANTED_BY], i) | |
902 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) | |
903 | return; | |
904 | ||
54165a39 | 905 | log_info("Service %s is not needed anymore. Stopping.", u->meta.id); |
f3bff0eb LP |
906 | |
907 | /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */ | |
398ef8ba | 908 | manager_add_job(u->meta.manager, JOB_STOP, u, JOB_FAIL, true, NULL, NULL); |
f3bff0eb LP |
909 | } |
910 | ||
87f0e418 LP |
911 | static void retroactively_start_dependencies(Unit *u) { |
912 | Iterator i; | |
913 | Unit *other; | |
914 | ||
915 | assert(u); | |
916 | assert(UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))); | |
917 | ||
918 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRES], i) | |
919 | if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) | |
398ef8ba | 920 | manager_add_job(u->meta.manager, JOB_START, other, JOB_REPLACE, true, NULL, NULL); |
87f0e418 | 921 | |
9e2f7c11 | 922 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRES_OVERRIDABLE], i) |
87f0e418 | 923 | if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
398ef8ba | 924 | manager_add_job(u->meta.manager, JOB_START, other, JOB_FAIL, false, NULL, NULL); |
87f0e418 LP |
925 | |
926 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUISITE], i) | |
927 | if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) | |
398ef8ba | 928 | manager_add_job(u->meta.manager, JOB_START, other, JOB_REPLACE, true, NULL, NULL); |
87f0e418 LP |
929 | |
930 | SET_FOREACH(other, u->meta.dependencies[UNIT_WANTS], i) | |
931 | if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) | |
398ef8ba | 932 | manager_add_job(u->meta.manager, JOB_START, other, JOB_FAIL, false, NULL, NULL); |
87f0e418 LP |
933 | |
934 | SET_FOREACH(other, u->meta.dependencies[UNIT_CONFLICTS], i) | |
935 | if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) | |
398ef8ba | 936 | manager_add_job(u->meta.manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL); |
69dd2852 LP |
937 | |
938 | SET_FOREACH(other, u->meta.dependencies[UNIT_CONFLICTED_BY], i) | |
939 | if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) | |
940 | manager_add_job(u->meta.manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL); | |
87f0e418 LP |
941 | } |
942 | ||
943 | static void retroactively_stop_dependencies(Unit *u) { | |
944 | Iterator i; | |
945 | Unit *other; | |
946 | ||
947 | assert(u); | |
948 | assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))); | |
949 | ||
f3bff0eb LP |
950 | if (u->meta.recursive_stop) { |
951 | /* Pull down units need us recursively if enabled */ | |
952 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRED_BY], i) | |
953 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) | |
398ef8ba | 954 | manager_add_job(u->meta.manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL); |
f3bff0eb LP |
955 | } |
956 | ||
957 | /* Garbage collect services that might not be needed anymore, if enabled */ | |
958 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRES], i) | |
87f0e418 | 959 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
f3bff0eb | 960 | unit_check_uneeded(other); |
9e2f7c11 | 961 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRES_OVERRIDABLE], i) |
f3bff0eb LP |
962 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
963 | unit_check_uneeded(other); | |
964 | SET_FOREACH(other, u->meta.dependencies[UNIT_WANTS], i) | |
965 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) | |
966 | unit_check_uneeded(other); | |
967 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUISITE], i) | |
968 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) | |
969 | unit_check_uneeded(other); | |
9e2f7c11 | 970 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUISITE_OVERRIDABLE], i) |
f3bff0eb LP |
971 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
972 | unit_check_uneeded(other); | |
87f0e418 LP |
973 | } |
974 | ||
975 | void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns) { | |
63983207 | 976 | dual_timestamp ts; |
7e6e7b06 | 977 | bool unexpected; |
a096ed36 | 978 | |
87f0e418 LP |
979 | assert(u); |
980 | assert(os < _UNIT_ACTIVE_STATE_MAX); | |
981 | assert(ns < _UNIT_ACTIVE_STATE_MAX); | |
87f0e418 | 982 | |
8e471ccd LP |
983 | /* Note that this is called for all low-level state changes, |
984 | * even if they might map to the same high-level | |
985 | * UnitActiveState! That means that ns == os is OK an expected | |
986 | * behaviour here. For example: if a mount point is remounted | |
987 | * this function will be called too and the utmp code below | |
988 | * relies on that! */ | |
87f0e418 | 989 | |
63983207 | 990 | dual_timestamp_get(&ts); |
173e3821 | 991 | |
6124958c | 992 | if (UNIT_IS_INACTIVE_OR_MAINTENANCE(os) && !UNIT_IS_INACTIVE_OR_MAINTENANCE(ns)) |
173e3821 | 993 | u->meta.inactive_exit_timestamp = ts; |
6124958c | 994 | else if (!UNIT_IS_INACTIVE_OR_MAINTENANCE(os) && UNIT_IS_INACTIVE_OR_MAINTENANCE(ns)) |
173e3821 LP |
995 | u->meta.inactive_enter_timestamp = ts; |
996 | ||
87f0e418 | 997 | if (!UNIT_IS_ACTIVE_OR_RELOADING(os) && UNIT_IS_ACTIVE_OR_RELOADING(ns)) |
173e3821 | 998 | u->meta.active_enter_timestamp = ts; |
87f0e418 | 999 | else if (UNIT_IS_ACTIVE_OR_RELOADING(os) && !UNIT_IS_ACTIVE_OR_RELOADING(ns)) |
173e3821 | 1000 | u->meta.active_exit_timestamp = ts; |
87f0e418 | 1001 | |
fb385181 LP |
1002 | if (UNIT_IS_INACTIVE_OR_MAINTENANCE(ns)) |
1003 | cgroup_bonding_trim_list(u->meta.cgroup_bondings, true); | |
1004 | ||
871d7de4 | 1005 | timer_unit_notify(u, ns); |
01f78473 | 1006 | path_unit_notify(u, ns); |
871d7de4 | 1007 | |
87f0e418 | 1008 | if (u->meta.job) { |
7e6e7b06 | 1009 | unexpected = false; |
87f0e418 LP |
1010 | |
1011 | if (u->meta.job->state == JOB_WAITING) | |
1012 | ||
1013 | /* So we reached a different state for this | |
1014 | * job. Let's see if we can run it now if it | |
1015 | * failed previously due to EAGAIN. */ | |
c1e1601e | 1016 | job_add_to_run_queue(u->meta.job); |
87f0e418 | 1017 | |
b410e6b9 LP |
1018 | /* Let's check whether this state change constitutes a |
1019 | * finished job, or maybe cotradicts a running job and | |
1020 | * hence needs to invalidate jobs. */ | |
87f0e418 | 1021 | |
b410e6b9 | 1022 | switch (u->meta.job->type) { |
87f0e418 | 1023 | |
b410e6b9 LP |
1024 | case JOB_START: |
1025 | case JOB_VERIFY_ACTIVE: | |
87f0e418 | 1026 | |
b410e6b9 LP |
1027 | if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) |
1028 | job_finish_and_invalidate(u->meta.job, true); | |
1029 | else if (u->meta.job->state == JOB_RUNNING && ns != UNIT_ACTIVATING) { | |
1030 | unexpected = true; | |
1031 | job_finish_and_invalidate(u->meta.job, false); | |
1032 | } | |
87f0e418 | 1033 | |
b410e6b9 | 1034 | break; |
87f0e418 | 1035 | |
b410e6b9 LP |
1036 | case JOB_RELOAD: |
1037 | case JOB_RELOAD_OR_START: | |
87f0e418 | 1038 | |
b410e6b9 | 1039 | if (u->meta.job->state == JOB_RUNNING) { |
a096ed36 | 1040 | if (ns == UNIT_ACTIVE) |
87f0e418 | 1041 | job_finish_and_invalidate(u->meta.job, true); |
032ff4af | 1042 | else if (ns != UNIT_ACTIVATING && ns != UNIT_RELOADING) { |
a096ed36 | 1043 | unexpected = true; |
87f0e418 | 1044 | job_finish_and_invalidate(u->meta.job, false); |
a096ed36 | 1045 | } |
b410e6b9 | 1046 | } |
87f0e418 | 1047 | |
b410e6b9 | 1048 | break; |
87f0e418 | 1049 | |
b410e6b9 LP |
1050 | case JOB_STOP: |
1051 | case JOB_RESTART: | |
1052 | case JOB_TRY_RESTART: | |
87f0e418 | 1053 | |
9aab5a73 | 1054 | if (ns == UNIT_INACTIVE || ns == UNIT_MAINTENANCE) |
b410e6b9 LP |
1055 | job_finish_and_invalidate(u->meta.job, true); |
1056 | else if (u->meta.job->state == JOB_RUNNING && ns != UNIT_DEACTIVATING) { | |
1057 | unexpected = true; | |
1058 | job_finish_and_invalidate(u->meta.job, false); | |
1059 | } | |
87f0e418 | 1060 | |
b410e6b9 | 1061 | break; |
87f0e418 | 1062 | |
b410e6b9 LP |
1063 | default: |
1064 | assert_not_reached("Job type unknown"); | |
87f0e418 | 1065 | } |
87f0e418 | 1066 | |
7e6e7b06 LP |
1067 | } else |
1068 | unexpected = true; | |
1069 | ||
9f611ad8 LP |
1070 | /* If this state change happened without being requested by a |
1071 | * job, then let's retroactively start or stop | |
1072 | * dependencies. We skip that step when deserializing, since | |
1073 | * we don't want to create any additional jobs just because | |
1074 | * something is already activated. */ | |
1075 | ||
1076 | if (unexpected && u->meta.manager->n_deserializing <= 0) { | |
7e6e7b06 LP |
1077 | if (UNIT_IS_INACTIVE_OR_DEACTIVATING(os) && UNIT_IS_ACTIVE_OR_ACTIVATING(ns)) |
1078 | retroactively_start_dependencies(u); | |
1079 | else if (UNIT_IS_ACTIVE_OR_ACTIVATING(os) && UNIT_IS_INACTIVE_OR_DEACTIVATING(ns)) | |
1080 | retroactively_stop_dependencies(u); | |
a096ed36 | 1081 | } |
f3bff0eb | 1082 | |
5de9682c LP |
1083 | if (ns != os && ns == UNIT_MAINTENANCE) { |
1084 | Iterator i; | |
1085 | Unit *other; | |
1086 | ||
1087 | SET_FOREACH(other, u->meta.dependencies[UNIT_ON_FAILURE], i) | |
1088 | manager_add_job(u->meta.manager, JOB_START, other, JOB_REPLACE, true, NULL, NULL); | |
1089 | ||
1090 | log_notice("Unit %s entered maintenance state.", u->meta.id); | |
1091 | } | |
1092 | ||
e537352b LP |
1093 | /* Some names are special */ |
1094 | if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) { | |
f278026d | 1095 | if (unit_has_name(u, SPECIAL_DBUS_SERVICE)) { |
e537352b LP |
1096 | /* The bus just might have become available, |
1097 | * hence try to connect to it, if we aren't | |
1098 | * yet connected. */ | |
5e8d1c9a | 1099 | bus_init(u->meta.manager); |
f278026d LP |
1100 | } |
1101 | ||
e537352b LP |
1102 | if (unit_has_name(u, SPECIAL_SYSLOG_SERVICE)) |
1103 | /* The syslog daemon just might have become | |
1104 | * available, hence try to connect to it, if | |
1105 | * we aren't yet connected. */ | |
843d2643 | 1106 | log_open(); |
f278026d | 1107 | |
e537352b LP |
1108 | if (u->meta.type == UNIT_MOUNT) |
1109 | /* Another directory became available, let's | |
1110 | * check if that is enough to write our utmp | |
1111 | * entry. */ | |
1112 | manager_write_utmp_reboot(u->meta.manager); | |
1113 | ||
1114 | if (u->meta.type == UNIT_TARGET) | |
1115 | /* A target got activated, maybe this is a runlevel? */ | |
1116 | manager_write_utmp_runlevel(u->meta.manager, u); | |
1117 | ||
1118 | } else if (!UNIT_IS_ACTIVE_OR_RELOADING(ns)) { | |
f278026d LP |
1119 | |
1120 | if (unit_has_name(u, SPECIAL_SYSLOG_SERVICE)) | |
e537352b LP |
1121 | /* The syslog daemon might just have |
1122 | * terminated, hence try to disconnect from | |
1123 | * it. */ | |
2882c7ed | 1124 | log_close_syslog(); |
f278026d LP |
1125 | |
1126 | /* We don't care about D-Bus here, since we'll get an | |
1127 | * asynchronous notification for it anyway. */ | |
1128 | } | |
1129 | ||
f3bff0eb LP |
1130 | /* Maybe we finished startup and are now ready for being |
1131 | * stopped because unneeded? */ | |
1132 | unit_check_uneeded(u); | |
c1e1601e LP |
1133 | |
1134 | unit_add_to_dbus_queue(u); | |
701cc384 | 1135 | unit_add_to_gc_queue(u); |
87f0e418 LP |
1136 | } |
1137 | ||
acbb0225 | 1138 | int unit_watch_fd(Unit *u, int fd, uint32_t events, Watch *w) { |
87f0e418 LP |
1139 | struct epoll_event ev; |
1140 | ||
1141 | assert(u); | |
1142 | assert(fd >= 0); | |
acbb0225 | 1143 | assert(w); |
ea430986 | 1144 | assert(w->type == WATCH_INVALID || (w->type == WATCH_FD && w->fd == fd && w->data.unit == u)); |
87f0e418 LP |
1145 | |
1146 | zero(ev); | |
acbb0225 | 1147 | ev.data.ptr = w; |
87f0e418 LP |
1148 | ev.events = events; |
1149 | ||
acbb0225 LP |
1150 | if (epoll_ctl(u->meta.manager->epoll_fd, |
1151 | w->type == WATCH_INVALID ? EPOLL_CTL_ADD : EPOLL_CTL_MOD, | |
1152 | fd, | |
1153 | &ev) < 0) | |
1154 | return -errno; | |
87f0e418 | 1155 | |
acbb0225 LP |
1156 | w->fd = fd; |
1157 | w->type = WATCH_FD; | |
ea430986 | 1158 | w->data.unit = u; |
87f0e418 | 1159 | |
acbb0225 | 1160 | return 0; |
87f0e418 LP |
1161 | } |
1162 | ||
acbb0225 | 1163 | void unit_unwatch_fd(Unit *u, Watch *w) { |
87f0e418 | 1164 | assert(u); |
acbb0225 | 1165 | assert(w); |
87f0e418 | 1166 | |
acbb0225 LP |
1167 | if (w->type == WATCH_INVALID) |
1168 | return; | |
1169 | ||
ea430986 LP |
1170 | assert(w->type == WATCH_FD); |
1171 | assert(w->data.unit == u); | |
acbb0225 LP |
1172 | assert_se(epoll_ctl(u->meta.manager->epoll_fd, EPOLL_CTL_DEL, w->fd, NULL) >= 0); |
1173 | ||
1174 | w->fd = -1; | |
1175 | w->type = WATCH_INVALID; | |
ea430986 | 1176 | w->data.unit = NULL; |
87f0e418 LP |
1177 | } |
1178 | ||
1179 | int unit_watch_pid(Unit *u, pid_t pid) { | |
1180 | assert(u); | |
1181 | assert(pid >= 1); | |
1182 | ||
05e343b7 LP |
1183 | /* Watch a specific PID. We only support one unit watching |
1184 | * each PID for now. */ | |
1185 | ||
c6c18be3 | 1186 | return hashmap_put(u->meta.manager->watch_pids, LONG_TO_PTR(pid), u); |
87f0e418 LP |
1187 | } |
1188 | ||
1189 | void unit_unwatch_pid(Unit *u, pid_t pid) { | |
1190 | assert(u); | |
1191 | assert(pid >= 1); | |
1192 | ||
c6c18be3 | 1193 | hashmap_remove_value(u->meta.manager->watch_pids, LONG_TO_PTR(pid), u); |
87f0e418 LP |
1194 | } |
1195 | ||
acbb0225 | 1196 | int unit_watch_timer(Unit *u, usec_t delay, Watch *w) { |
87f0e418 | 1197 | struct itimerspec its; |
acbb0225 | 1198 | int flags, fd; |
87f0e418 LP |
1199 | bool ours; |
1200 | ||
1201 | assert(u); | |
acbb0225 | 1202 | assert(w); |
faf919f1 | 1203 | assert(w->type == WATCH_INVALID || (w->type == WATCH_UNIT_TIMER && w->data.unit == u)); |
87f0e418 LP |
1204 | |
1205 | /* This will try to reuse the old timer if there is one */ | |
1206 | ||
faf919f1 LP |
1207 | if (w->type == WATCH_UNIT_TIMER) { |
1208 | assert(w->data.unit == u); | |
1209 | assert(w->fd >= 0); | |
1210 | ||
87f0e418 | 1211 | ours = false; |
acbb0225 | 1212 | fd = w->fd; |
faf919f1 LP |
1213 | } else if (w->type == WATCH_INVALID) { |
1214 | ||
87f0e418 | 1215 | ours = true; |
87f0e418 LP |
1216 | if ((fd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK|TFD_CLOEXEC)) < 0) |
1217 | return -errno; | |
faf919f1 LP |
1218 | } else |
1219 | assert_not_reached("Invalid watch type"); | |
87f0e418 LP |
1220 | |
1221 | zero(its); | |
1222 | ||
1223 | if (delay <= 0) { | |
1224 | /* Set absolute time in the past, but not 0, since we | |
1225 | * don't want to disarm the timer */ | |
1226 | its.it_value.tv_sec = 0; | |
1227 | its.it_value.tv_nsec = 1; | |
1228 | ||
1229 | flags = TFD_TIMER_ABSTIME; | |
1230 | } else { | |
1231 | timespec_store(&its.it_value, delay); | |
1232 | flags = 0; | |
1233 | } | |
1234 | ||
1235 | /* This will also flush the elapse counter */ | |
1236 | if (timerfd_settime(fd, flags, &its, NULL) < 0) | |
1237 | goto fail; | |
1238 | ||
acbb0225 LP |
1239 | if (w->type == WATCH_INVALID) { |
1240 | struct epoll_event ev; | |
87f0e418 | 1241 | |
acbb0225 LP |
1242 | zero(ev); |
1243 | ev.data.ptr = w; | |
f94ea366 | 1244 | ev.events = EPOLLIN; |
acbb0225 LP |
1245 | |
1246 | if (epoll_ctl(u->meta.manager->epoll_fd, EPOLL_CTL_ADD, fd, &ev) < 0) | |
1247 | goto fail; | |
1248 | } | |
1249 | ||
faf919f1 | 1250 | w->type = WATCH_UNIT_TIMER; |
acbb0225 | 1251 | w->fd = fd; |
ea430986 | 1252 | w->data.unit = u; |
87f0e418 | 1253 | |
87f0e418 LP |
1254 | return 0; |
1255 | ||
1256 | fail: | |
1257 | if (ours) | |
ea430986 | 1258 | close_nointr_nofail(fd); |
87f0e418 LP |
1259 | |
1260 | return -errno; | |
1261 | } | |
1262 | ||
acbb0225 | 1263 | void unit_unwatch_timer(Unit *u, Watch *w) { |
87f0e418 | 1264 | assert(u); |
acbb0225 | 1265 | assert(w); |
87f0e418 | 1266 | |
acbb0225 | 1267 | if (w->type == WATCH_INVALID) |
87f0e418 LP |
1268 | return; |
1269 | ||
faf919f1 LP |
1270 | assert(w->type == WATCH_UNIT_TIMER); |
1271 | assert(w->data.unit == u); | |
1272 | assert(w->fd >= 0); | |
acbb0225 LP |
1273 | |
1274 | assert_se(epoll_ctl(u->meta.manager->epoll_fd, EPOLL_CTL_DEL, w->fd, NULL) >= 0); | |
a16e1123 | 1275 | close_nointr_nofail(w->fd); |
acbb0225 LP |
1276 | |
1277 | w->fd = -1; | |
1278 | w->type = WATCH_INVALID; | |
ea430986 | 1279 | w->data.unit = NULL; |
87f0e418 LP |
1280 | } |
1281 | ||
1282 | bool unit_job_is_applicable(Unit *u, JobType j) { | |
1283 | assert(u); | |
1284 | assert(j >= 0 && j < _JOB_TYPE_MAX); | |
1285 | ||
1286 | switch (j) { | |
1287 | ||
1288 | case JOB_VERIFY_ACTIVE: | |
1289 | case JOB_START: | |
1290 | return true; | |
1291 | ||
1292 | case JOB_STOP: | |
1293 | case JOB_RESTART: | |
1294 | case JOB_TRY_RESTART: | |
1295 | return unit_can_start(u); | |
1296 | ||
1297 | case JOB_RELOAD: | |
1298 | return unit_can_reload(u); | |
1299 | ||
1300 | case JOB_RELOAD_OR_START: | |
1301 | return unit_can_reload(u) && unit_can_start(u); | |
1302 | ||
1303 | default: | |
1304 | assert_not_reached("Invalid job type"); | |
1305 | } | |
1306 | } | |
1307 | ||
701cc384 | 1308 | int unit_add_dependency(Unit *u, UnitDependency d, Unit *other, bool add_reference) { |
87f0e418 LP |
1309 | |
1310 | static const UnitDependency inverse_table[_UNIT_DEPENDENCY_MAX] = { | |
1311 | [UNIT_REQUIRES] = UNIT_REQUIRED_BY, | |
9e2f7c11 | 1312 | [UNIT_REQUIRES_OVERRIDABLE] = UNIT_REQUIRED_BY_OVERRIDABLE, |
87f0e418 LP |
1313 | [UNIT_WANTS] = UNIT_WANTED_BY, |
1314 | [UNIT_REQUISITE] = UNIT_REQUIRED_BY, | |
9e2f7c11 | 1315 | [UNIT_REQUISITE_OVERRIDABLE] = UNIT_REQUIRED_BY_OVERRIDABLE, |
87f0e418 | 1316 | [UNIT_REQUIRED_BY] = _UNIT_DEPENDENCY_INVALID, |
9e2f7c11 | 1317 | [UNIT_REQUIRED_BY_OVERRIDABLE] = _UNIT_DEPENDENCY_INVALID, |
87f0e418 | 1318 | [UNIT_WANTED_BY] = _UNIT_DEPENDENCY_INVALID, |
69dd2852 LP |
1319 | [UNIT_CONFLICTS] = UNIT_CONFLICTED_BY, |
1320 | [UNIT_CONFLICTED_BY] = UNIT_CONFLICTS, | |
87f0e418 | 1321 | [UNIT_BEFORE] = UNIT_AFTER, |
701cc384 | 1322 | [UNIT_AFTER] = UNIT_BEFORE, |
5de9682c | 1323 | [UNIT_ON_FAILURE] = _UNIT_DEPENDENCY_INVALID, |
701cc384 LP |
1324 | [UNIT_REFERENCES] = UNIT_REFERENCED_BY, |
1325 | [UNIT_REFERENCED_BY] = UNIT_REFERENCES | |
87f0e418 | 1326 | }; |
701cc384 | 1327 | int r, q = 0, v = 0, w = 0; |
87f0e418 LP |
1328 | |
1329 | assert(u); | |
1330 | assert(d >= 0 && d < _UNIT_DEPENDENCY_MAX); | |
87f0e418 LP |
1331 | assert(other); |
1332 | ||
1333 | /* We won't allow dependencies on ourselves. We will not | |
1334 | * consider them an error however. */ | |
1335 | if (u == other) | |
1336 | return 0; | |
1337 | ||
9e2f7c11 LP |
1338 | if (UNIT_VTABLE(u)->no_requires && |
1339 | (d == UNIT_REQUIRES || | |
1340 | d == UNIT_REQUIRES_OVERRIDABLE || | |
1341 | d == UNIT_REQUISITE || | |
1342 | d == UNIT_REQUISITE_OVERRIDABLE)) { | |
1343 | return -EINVAL; | |
1344 | } | |
1345 | ||
5de9682c | 1346 | if ((r = set_ensure_allocated(&u->meta.dependencies[d], trivial_hash_func, trivial_compare_func)) < 0) |
87f0e418 LP |
1347 | return r; |
1348 | ||
5de9682c LP |
1349 | if (inverse_table[d] != _UNIT_DEPENDENCY_INVALID) |
1350 | if ((r = set_ensure_allocated(&other->meta.dependencies[inverse_table[d]], trivial_hash_func, trivial_compare_func)) < 0) | |
1351 | return r; | |
1352 | ||
701cc384 LP |
1353 | if (add_reference) |
1354 | if ((r = set_ensure_allocated(&u->meta.dependencies[UNIT_REFERENCES], trivial_hash_func, trivial_compare_func)) < 0 || | |
1355 | (r = set_ensure_allocated(&other->meta.dependencies[UNIT_REFERENCED_BY], trivial_hash_func, trivial_compare_func)) < 0) | |
1356 | return r; | |
87f0e418 | 1357 | |
701cc384 LP |
1358 | if ((q = set_put(u->meta.dependencies[d], other)) < 0) |
1359 | return q; | |
87f0e418 | 1360 | |
5de9682c LP |
1361 | if (inverse_table[d] != _UNIT_DEPENDENCY_INVALID) |
1362 | if ((v = set_put(other->meta.dependencies[inverse_table[d]], u)) < 0) { | |
1363 | r = v; | |
1364 | goto fail; | |
1365 | } | |
701cc384 LP |
1366 | |
1367 | if (add_reference) { | |
1368 | if ((w = set_put(u->meta.dependencies[UNIT_REFERENCES], other)) < 0) { | |
1369 | r = w; | |
1370 | goto fail; | |
1371 | } | |
1372 | ||
1373 | if ((r = set_put(other->meta.dependencies[UNIT_REFERENCED_BY], u)) < 0) | |
1374 | goto fail; | |
87f0e418 LP |
1375 | } |
1376 | ||
c1e1601e | 1377 | unit_add_to_dbus_queue(u); |
87f0e418 | 1378 | return 0; |
701cc384 LP |
1379 | |
1380 | fail: | |
1381 | if (q > 0) | |
1382 | set_remove(u->meta.dependencies[d], other); | |
1383 | ||
1384 | if (v > 0) | |
1385 | set_remove(other->meta.dependencies[inverse_table[d]], u); | |
1386 | ||
1387 | if (w > 0) | |
1388 | set_remove(u->meta.dependencies[UNIT_REFERENCES], other); | |
1389 | ||
1390 | return r; | |
87f0e418 | 1391 | } |
0301abf4 | 1392 | |
2c966c03 LP |
1393 | int unit_add_two_dependencies(Unit *u, UnitDependency d, UnitDependency e, Unit *other, bool add_reference) { |
1394 | int r; | |
1395 | ||
1396 | assert(u); | |
1397 | ||
1398 | if ((r = unit_add_dependency(u, d, other, add_reference)) < 0) | |
1399 | return r; | |
1400 | ||
1401 | if ((r = unit_add_dependency(u, e, other, add_reference)) < 0) | |
1402 | return r; | |
1403 | ||
1404 | return 0; | |
1405 | } | |
1406 | ||
9e2f7c11 LP |
1407 | static const char *resolve_template(Unit *u, const char *name, const char*path, char **p) { |
1408 | char *s; | |
1409 | ||
1410 | assert(u); | |
1411 | assert(name || path); | |
1412 | ||
1413 | if (!name) | |
1414 | name = file_name_from_path(path); | |
1415 | ||
1416 | if (!unit_name_is_template(name)) { | |
1417 | *p = NULL; | |
1418 | return name; | |
1419 | } | |
1420 | ||
1421 | if (u->meta.instance) | |
1422 | s = unit_name_replace_instance(name, u->meta.instance); | |
1423 | else { | |
1424 | char *i; | |
1425 | ||
1426 | if (!(i = unit_name_to_prefix(u->meta.id))) | |
1427 | return NULL; | |
1428 | ||
1429 | s = unit_name_replace_instance(name, i); | |
1430 | free(i); | |
1431 | } | |
1432 | ||
1433 | if (!s) | |
1434 | return NULL; | |
1435 | ||
1436 | *p = s; | |
1437 | return s; | |
1438 | } | |
1439 | ||
701cc384 | 1440 | int unit_add_dependency_by_name(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) { |
09b6b09f LP |
1441 | Unit *other; |
1442 | int r; | |
9e2f7c11 | 1443 | char *s; |
09b6b09f | 1444 | |
9e2f7c11 LP |
1445 | assert(u); |
1446 | assert(name || path); | |
09b6b09f | 1447 | |
9e2f7c11 LP |
1448 | if (!(name = resolve_template(u, name, path, &s))) |
1449 | return -ENOMEM; | |
09b6b09f | 1450 | |
398ef8ba | 1451 | if ((r = manager_load_unit(u->meta.manager, name, path, NULL, &other)) < 0) |
9e2f7c11 LP |
1452 | goto finish; |
1453 | ||
701cc384 | 1454 | r = unit_add_dependency(u, d, other, add_reference); |
9e2f7c11 LP |
1455 | |
1456 | finish: | |
1457 | free(s); | |
1458 | return r; | |
09b6b09f LP |
1459 | } |
1460 | ||
2c966c03 LP |
1461 | int unit_add_two_dependencies_by_name(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference) { |
1462 | Unit *other; | |
1463 | int r; | |
1464 | char *s; | |
1465 | ||
1466 | assert(u); | |
1467 | assert(name || path); | |
1468 | ||
1469 | if (!(name = resolve_template(u, name, path, &s))) | |
1470 | return -ENOMEM; | |
1471 | ||
398ef8ba | 1472 | if ((r = manager_load_unit(u->meta.manager, name, path, NULL, &other)) < 0) |
2c966c03 LP |
1473 | goto finish; |
1474 | ||
1475 | r = unit_add_two_dependencies(u, d, e, other, add_reference); | |
1476 | ||
1477 | finish: | |
1478 | free(s); | |
1479 | return r; | |
1480 | } | |
1481 | ||
701cc384 | 1482 | int unit_add_dependency_by_name_inverse(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) { |
bd77d0fc LP |
1483 | Unit *other; |
1484 | int r; | |
9e2f7c11 | 1485 | char *s; |
bd77d0fc | 1486 | |
9e2f7c11 LP |
1487 | assert(u); |
1488 | assert(name || path); | |
bd77d0fc | 1489 | |
9e2f7c11 LP |
1490 | if (!(name = resolve_template(u, name, path, &s))) |
1491 | return -ENOMEM; | |
bd77d0fc | 1492 | |
398ef8ba | 1493 | if ((r = manager_load_unit(u->meta.manager, name, path, NULL, &other)) < 0) |
9e2f7c11 LP |
1494 | goto finish; |
1495 | ||
701cc384 | 1496 | r = unit_add_dependency(other, d, u, add_reference); |
9e2f7c11 LP |
1497 | |
1498 | finish: | |
1499 | free(s); | |
1500 | return r; | |
bd77d0fc LP |
1501 | } |
1502 | ||
2c966c03 LP |
1503 | int unit_add_two_dependencies_by_name_inverse(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference) { |
1504 | Unit *other; | |
1505 | int r; | |
1506 | char *s; | |
1507 | ||
1508 | assert(u); | |
1509 | assert(name || path); | |
1510 | ||
1511 | if (!(name = resolve_template(u, name, path, &s))) | |
1512 | return -ENOMEM; | |
1513 | ||
398ef8ba | 1514 | if ((r = manager_load_unit(u->meta.manager, name, path, NULL, &other)) < 0) |
2c966c03 LP |
1515 | goto finish; |
1516 | ||
1517 | if ((r = unit_add_two_dependencies(other, d, e, u, add_reference)) < 0) | |
1518 | goto finish; | |
1519 | ||
1520 | finish: | |
1521 | free(s); | |
1522 | return r; | |
1523 | } | |
1524 | ||
0301abf4 LP |
1525 | int set_unit_path(const char *p) { |
1526 | char *cwd, *c; | |
1527 | int r; | |
1528 | ||
1529 | /* This is mostly for debug purposes */ | |
1530 | ||
1531 | if (path_is_absolute(p)) { | |
1532 | if (!(c = strdup(p))) | |
1533 | return -ENOMEM; | |
1534 | } else { | |
1535 | if (!(cwd = get_current_dir_name())) | |
1536 | return -errno; | |
1537 | ||
1538 | r = asprintf(&c, "%s/%s", cwd, p); | |
1539 | free(cwd); | |
1540 | ||
1541 | if (r < 0) | |
1542 | return -ENOMEM; | |
1543 | } | |
1544 | ||
036643a2 | 1545 | if (setenv("SYSTEMD_UNIT_PATH", c, 0) < 0) { |
0301abf4 LP |
1546 | r = -errno; |
1547 | free(c); | |
1548 | return r; | |
1549 | } | |
1550 | ||
1551 | return 0; | |
1552 | } | |
88066b3a | 1553 | |
ea430986 LP |
1554 | char *unit_dbus_path(Unit *u) { |
1555 | char *p, *e; | |
1556 | ||
1557 | assert(u); | |
1558 | ||
04ade7d2 LP |
1559 | if (!u->meta.id) |
1560 | return NULL; | |
1561 | ||
9e2f7c11 | 1562 | if (!(e = bus_path_escape(u->meta.id))) |
ea430986 LP |
1563 | return NULL; |
1564 | ||
35d2e7ec | 1565 | p = strappend("/org/freedesktop/systemd1/unit/", e); |
ea430986 | 1566 | free(e); |
35d2e7ec | 1567 | |
ea430986 LP |
1568 | return p; |
1569 | } | |
1570 | ||
8e274523 LP |
1571 | int unit_add_cgroup(Unit *u, CGroupBonding *b) { |
1572 | CGroupBonding *l; | |
1573 | int r; | |
1574 | ||
1575 | assert(u); | |
1576 | assert(b); | |
35d2e7ec | 1577 | |
8e274523 LP |
1578 | assert(b->path); |
1579 | ||
35d2e7ec LP |
1580 | if (!b->controller) |
1581 | if (!(b->controller = strdup(SYSTEMD_CGROUP_CONTROLLER))) | |
1582 | return -ENOMEM; | |
1583 | ||
8e274523 LP |
1584 | /* Ensure this hasn't been added yet */ |
1585 | assert(!b->unit); | |
1586 | ||
1587 | l = hashmap_get(u->meta.manager->cgroup_bondings, b->path); | |
1588 | LIST_PREPEND(CGroupBonding, by_path, l, b); | |
1589 | ||
1590 | if ((r = hashmap_replace(u->meta.manager->cgroup_bondings, b->path, l)) < 0) { | |
1591 | LIST_REMOVE(CGroupBonding, by_path, l, b); | |
1592 | return r; | |
1593 | } | |
1594 | ||
1595 | LIST_PREPEND(CGroupBonding, by_unit, u->meta.cgroup_bondings, b); | |
1596 | b->unit = u; | |
1597 | ||
1598 | return 0; | |
1599 | } | |
1600 | ||
013b87c0 LP |
1601 | static char *default_cgroup_path(Unit *u) { |
1602 | char *p; | |
4f2d528d | 1603 | int r; |
013b87c0 LP |
1604 | |
1605 | assert(u); | |
1606 | ||
4f2d528d LP |
1607 | if (u->meta.instance) { |
1608 | char *t; | |
013b87c0 | 1609 | |
4f2d528d LP |
1610 | if (!(t = unit_name_template(u->meta.id))) |
1611 | return NULL; | |
1612 | ||
1613 | r = asprintf(&p, "%s/%s/%s", u->meta.manager->cgroup_hierarchy, t, u->meta.instance); | |
1614 | free(t); | |
1615 | } else | |
1616 | r = asprintf(&p, "%s/%s", u->meta.manager->cgroup_hierarchy, u->meta.id); | |
1617 | ||
1618 | return r < 0 ? NULL : p; | |
013b87c0 LP |
1619 | } |
1620 | ||
8e274523 | 1621 | int unit_add_cgroup_from_text(Unit *u, const char *name) { |
013b87c0 LP |
1622 | char *controller = NULL, *path = NULL; |
1623 | CGroupBonding *b = NULL; | |
8e274523 LP |
1624 | int r; |
1625 | ||
1626 | assert(u); | |
1627 | assert(name); | |
1628 | ||
35d2e7ec LP |
1629 | if ((r = cg_split_spec(name, &controller, &path)) < 0) |
1630 | return r; | |
8e274523 | 1631 | |
35d2e7ec LP |
1632 | if (!path) |
1633 | path = default_cgroup_path(u); | |
013b87c0 | 1634 | |
35d2e7ec | 1635 | if (!controller) |
55096547 | 1636 | controller = strdup(SYSTEMD_CGROUP_CONTROLLER); |
013b87c0 | 1637 | |
35d2e7ec LP |
1638 | if (!path || !controller) { |
1639 | free(path); | |
1640 | free(controller); | |
1641 | ||
1642 | return -ENOMEM; | |
8e274523 LP |
1643 | } |
1644 | ||
013b87c0 LP |
1645 | if (cgroup_bonding_find_list(u->meta.cgroup_bondings, controller)) { |
1646 | r = -EEXIST; | |
1647 | goto fail; | |
1648 | } | |
8e274523 | 1649 | |
013b87c0 | 1650 | if (!(b = new0(CGroupBonding, 1))) { |
8e274523 LP |
1651 | r = -ENOMEM; |
1652 | goto fail; | |
1653 | } | |
1654 | ||
013b87c0 LP |
1655 | b->controller = controller; |
1656 | b->path = path; | |
8e274523 LP |
1657 | b->only_us = false; |
1658 | b->clean_up = false; | |
1659 | ||
1660 | if ((r = unit_add_cgroup(u, b)) < 0) | |
1661 | goto fail; | |
1662 | ||
1663 | return 0; | |
1664 | ||
1665 | fail: | |
013b87c0 LP |
1666 | free(path); |
1667 | free(controller); | |
8e274523 LP |
1668 | free(b); |
1669 | ||
1670 | return r; | |
1671 | } | |
1672 | ||
1673 | int unit_add_default_cgroup(Unit *u) { | |
1674 | CGroupBonding *b; | |
1675 | int r = -ENOMEM; | |
1676 | ||
1677 | assert(u); | |
1678 | ||
1679 | /* Adds in the default cgroup data, if it wasn't specified yet */ | |
1680 | ||
1681 | if (unit_get_default_cgroup(u)) | |
1682 | return 0; | |
1683 | ||
1684 | if (!(b = new0(CGroupBonding, 1))) | |
1685 | return -ENOMEM; | |
1686 | ||
013b87c0 | 1687 | if (!(b->path = default_cgroup_path(u))) |
8e274523 LP |
1688 | goto fail; |
1689 | ||
1690 | b->clean_up = true; | |
1691 | b->only_us = true; | |
1692 | ||
1693 | if ((r = unit_add_cgroup(u, b)) < 0) | |
1694 | goto fail; | |
1695 | ||
1696 | return 0; | |
1697 | ||
1698 | fail: | |
1699 | free(b->path); | |
1700 | free(b->controller); | |
1701 | free(b); | |
1702 | ||
1703 | return r; | |
1704 | } | |
1705 | ||
1706 | CGroupBonding* unit_get_default_cgroup(Unit *u) { | |
1707 | assert(u); | |
1708 | ||
55096547 | 1709 | return cgroup_bonding_find_list(u->meta.cgroup_bondings, SYSTEMD_CGROUP_CONTROLLER); |
8e274523 LP |
1710 | } |
1711 | ||
f6ff8c29 LP |
1712 | int unit_load_related_unit(Unit *u, const char *type, Unit **_found) { |
1713 | char *t; | |
1714 | int r; | |
1715 | ||
1716 | assert(u); | |
1717 | assert(type); | |
1718 | assert(_found); | |
1719 | ||
9e2f7c11 | 1720 | if (!(t = unit_name_change_suffix(u->meta.id, type))) |
f6ff8c29 LP |
1721 | return -ENOMEM; |
1722 | ||
1723 | assert(!unit_has_name(u, t)); | |
1724 | ||
398ef8ba | 1725 | r = manager_load_unit(u->meta.manager, t, NULL, NULL, _found); |
f6ff8c29 LP |
1726 | free(t); |
1727 | ||
9e2f7c11 | 1728 | assert(r < 0 || *_found != u); |
f6ff8c29 LP |
1729 | |
1730 | return r; | |
1731 | } | |
1732 | ||
a16e1123 LP |
1733 | int unit_get_related_unit(Unit *u, const char *type, Unit **_found) { |
1734 | Unit *found; | |
1735 | char *t; | |
1736 | ||
1737 | assert(u); | |
1738 | assert(type); | |
1739 | assert(_found); | |
1740 | ||
1741 | if (!(t = unit_name_change_suffix(u->meta.id, type))) | |
1742 | return -ENOMEM; | |
1743 | ||
1744 | assert(!unit_has_name(u, t)); | |
1745 | ||
1746 | found = manager_get_unit(u->meta.manager, t); | |
1747 | free(t); | |
1748 | ||
1749 | if (!found) | |
1750 | return -ENOENT; | |
1751 | ||
1752 | *_found = found; | |
1753 | return 0; | |
1754 | } | |
1755 | ||
9e2f7c11 LP |
1756 | static char *specifier_prefix_and_instance(char specifier, void *data, void *userdata) { |
1757 | Unit *u = userdata; | |
1758 | assert(u); | |
1759 | ||
1760 | return unit_name_to_prefix_and_instance(u->meta.id); | |
1761 | } | |
1762 | ||
1763 | static char *specifier_prefix(char specifier, void *data, void *userdata) { | |
1764 | Unit *u = userdata; | |
1765 | assert(u); | |
1766 | ||
1767 | return unit_name_to_prefix(u->meta.id); | |
1768 | } | |
1769 | ||
1770 | static char *specifier_prefix_unescaped(char specifier, void *data, void *userdata) { | |
1771 | Unit *u = userdata; | |
1772 | char *p, *r; | |
1773 | ||
1774 | assert(u); | |
1775 | ||
1776 | if (!(p = unit_name_to_prefix(u->meta.id))) | |
1777 | return NULL; | |
1778 | ||
1779 | r = unit_name_unescape(p); | |
1780 | free(p); | |
1781 | ||
1782 | return r; | |
1783 | } | |
1784 | ||
1785 | static char *specifier_instance_unescaped(char specifier, void *data, void *userdata) { | |
1786 | Unit *u = userdata; | |
1787 | assert(u); | |
1788 | ||
1789 | if (u->meta.instance) | |
1790 | return unit_name_unescape(u->meta.instance); | |
1791 | ||
1792 | return strdup(""); | |
1793 | } | |
1794 | ||
1795 | char *unit_name_printf(Unit *u, const char* format) { | |
1796 | ||
1797 | /* | |
1798 | * This will use the passed string as format string and | |
1799 | * replace the following specifiers: | |
1800 | * | |
1801 | * %n: the full id of the unit (foo@bar.waldo) | |
1802 | * %N: the id of the unit without the suffix (foo@bar) | |
1803 | * %p: the prefix (foo) | |
1804 | * %i: the instance (bar) | |
1805 | */ | |
1806 | ||
1807 | const Specifier table[] = { | |
1808 | { 'n', specifier_string, u->meta.id }, | |
1809 | { 'N', specifier_prefix_and_instance, NULL }, | |
1810 | { 'p', specifier_prefix, NULL }, | |
1811 | { 'i', specifier_string, u->meta.instance }, | |
1812 | { 0, NULL, NULL } | |
1813 | }; | |
1814 | ||
1815 | assert(u); | |
1816 | assert(format); | |
1817 | ||
1818 | return specifier_printf(format, table, u); | |
1819 | } | |
1820 | ||
1821 | char *unit_full_printf(Unit *u, const char *format) { | |
1822 | ||
1823 | /* This is similar to unit_name_printf() but also supports | |
1824 | * unescaping */ | |
1825 | ||
1826 | const Specifier table[] = { | |
1827 | { 'n', specifier_string, u->meta.id }, | |
1828 | { 'N', specifier_prefix_and_instance, NULL }, | |
1829 | { 'p', specifier_prefix, NULL }, | |
1830 | { 'P', specifier_prefix_unescaped, NULL }, | |
1831 | { 'i', specifier_string, u->meta.instance }, | |
1832 | { 'I', specifier_instance_unescaped, NULL }, | |
1833 | { 0, NULL, NULL } | |
1834 | }; | |
1835 | ||
1836 | assert(u); | |
1837 | assert(format); | |
1838 | ||
1839 | return specifier_printf(format, table, u); | |
1840 | } | |
1841 | ||
1842 | char **unit_full_printf_strv(Unit *u, char **l) { | |
1843 | size_t n; | |
1844 | char **r, **i, **j; | |
1845 | ||
1846 | /* Applies unit_full_printf to every entry in l */ | |
1847 | ||
1848 | assert(u); | |
1849 | ||
1850 | n = strv_length(l); | |
1851 | if (!(r = new(char*, n+1))) | |
1852 | return NULL; | |
1853 | ||
1854 | for (i = l, j = r; *i; i++, j++) | |
1855 | if (!(*j = unit_full_printf(u, *i))) | |
1856 | goto fail; | |
1857 | ||
1858 | *j = NULL; | |
1859 | return r; | |
1860 | ||
1861 | fail: | |
1862 | j--; | |
1863 | while (j >= r) | |
1864 | free(*j); | |
1865 | ||
1866 | free(r); | |
1867 | ||
1868 | return NULL; | |
1869 | } | |
1870 | ||
05e343b7 LP |
1871 | int unit_watch_bus_name(Unit *u, const char *name) { |
1872 | assert(u); | |
1873 | assert(name); | |
1874 | ||
1875 | /* Watch a specific name on the bus. We only support one unit | |
1876 | * watching each name for now. */ | |
1877 | ||
1878 | return hashmap_put(u->meta.manager->watch_bus, name, u); | |
1879 | } | |
1880 | ||
1881 | void unit_unwatch_bus_name(Unit *u, const char *name) { | |
1882 | assert(u); | |
1883 | assert(name); | |
1884 | ||
1885 | hashmap_remove_value(u->meta.manager->watch_bus, name, u); | |
1886 | } | |
1887 | ||
a16e1123 LP |
1888 | bool unit_can_serialize(Unit *u) { |
1889 | assert(u); | |
1890 | ||
1891 | return UNIT_VTABLE(u)->serialize && UNIT_VTABLE(u)->deserialize_item; | |
1892 | } | |
1893 | ||
1894 | int unit_serialize(Unit *u, FILE *f, FDSet *fds) { | |
1895 | int r; | |
1896 | ||
1897 | assert(u); | |
1898 | assert(f); | |
1899 | assert(fds); | |
1900 | ||
1901 | if (!unit_can_serialize(u)) | |
1902 | return 0; | |
1903 | ||
1904 | if ((r = UNIT_VTABLE(u)->serialize(u, f, fds)) < 0) | |
1905 | return r; | |
1906 | ||
cca098b0 LP |
1907 | if (u->meta.job) |
1908 | unit_serialize_item(u, f, "job", job_type_to_string(u->meta.job->type)); | |
1909 | ||
a16e1123 LP |
1910 | /* End marker */ |
1911 | fputc('\n', f); | |
1912 | return 0; | |
1913 | } | |
1914 | ||
1915 | void unit_serialize_item_format(Unit *u, FILE *f, const char *key, const char *format, ...) { | |
1916 | va_list ap; | |
1917 | ||
1918 | assert(u); | |
1919 | assert(f); | |
1920 | assert(key); | |
1921 | assert(format); | |
1922 | ||
1923 | fputs(key, f); | |
1924 | fputc('=', f); | |
1925 | ||
1926 | va_start(ap, format); | |
1927 | vfprintf(f, format, ap); | |
1928 | va_end(ap); | |
1929 | ||
1930 | fputc('\n', f); | |
1931 | } | |
1932 | ||
1933 | void unit_serialize_item(Unit *u, FILE *f, const char *key, const char *value) { | |
1934 | assert(u); | |
1935 | assert(f); | |
1936 | assert(key); | |
1937 | assert(value); | |
1938 | ||
1939 | fprintf(f, "%s=%s\n", key, value); | |
1940 | } | |
1941 | ||
1942 | int unit_deserialize(Unit *u, FILE *f, FDSet *fds) { | |
1943 | int r; | |
1944 | ||
1945 | assert(u); | |
1946 | assert(f); | |
1947 | assert(fds); | |
1948 | ||
1949 | if (!unit_can_serialize(u)) | |
1950 | return 0; | |
1951 | ||
1952 | for (;;) { | |
1953 | char line[1024], *l, *v; | |
1954 | size_t k; | |
1955 | ||
1956 | if (!fgets(line, sizeof(line), f)) { | |
1957 | if (feof(f)) | |
1958 | return 0; | |
1959 | return -errno; | |
1960 | } | |
1961 | ||
1962 | l = strstrip(line); | |
1963 | ||
1964 | /* End marker */ | |
1965 | if (l[0] == 0) | |
1966 | return 0; | |
1967 | ||
1968 | k = strcspn(l, "="); | |
1969 | ||
1970 | if (l[k] == '=') { | |
1971 | l[k] = 0; | |
1972 | v = l+k+1; | |
1973 | } else | |
1974 | v = l+k; | |
1975 | ||
cca098b0 LP |
1976 | if (streq(l, "job")) { |
1977 | JobType type; | |
1978 | ||
1979 | if ((type = job_type_from_string(v)) < 0) | |
1980 | log_debug("Failed to parse job type value %s", v); | |
1981 | else | |
1982 | u->meta.deserialized_job = type; | |
1983 | ||
1984 | continue; | |
1985 | } | |
1986 | ||
a16e1123 LP |
1987 | if ((r = UNIT_VTABLE(u)->deserialize_item(u, l, v, fds)) < 0) |
1988 | return r; | |
1989 | } | |
1990 | } | |
1991 | ||
6e2ef85b LP |
1992 | int unit_add_node_link(Unit *u, const char *what, bool wants) { |
1993 | Unit *device; | |
1994 | char *e; | |
1995 | int r; | |
1996 | ||
1997 | assert(u); | |
1998 | ||
1999 | if (!what) | |
2000 | return 0; | |
2001 | ||
2002 | /* Adds in links to the device node that this unit is based on */ | |
2003 | ||
8407a5d0 | 2004 | if (!is_device_path(what)) |
6e2ef85b LP |
2005 | return 0; |
2006 | ||
2007 | if (!(e = unit_name_build_escape(what+1, NULL, ".device"))) | |
2008 | return -ENOMEM; | |
2009 | ||
398ef8ba | 2010 | r = manager_load_unit(u->meta.manager, e, NULL, NULL, &device); |
6e2ef85b LP |
2011 | free(e); |
2012 | ||
2013 | if (r < 0) | |
2014 | return r; | |
2015 | ||
2c966c03 | 2016 | if ((r = unit_add_two_dependencies(u, UNIT_AFTER, UNIT_REQUIRES, device, true)) < 0) |
6e2ef85b LP |
2017 | return r; |
2018 | ||
2019 | if (wants) | |
2020 | if ((r = unit_add_dependency(device, UNIT_WANTS, u, false)) < 0) | |
2021 | return r; | |
2022 | ||
2023 | return 0; | |
2024 | } | |
a16e1123 | 2025 | |
cca098b0 LP |
2026 | int unit_coldplug(Unit *u) { |
2027 | int r; | |
2028 | ||
2029 | assert(u); | |
2030 | ||
2031 | if (UNIT_VTABLE(u)->coldplug) | |
2032 | if ((r = UNIT_VTABLE(u)->coldplug(u)) < 0) | |
2033 | return r; | |
2034 | ||
2035 | if (u->meta.deserialized_job >= 0) { | |
398ef8ba | 2036 | if ((r = manager_add_job(u->meta.manager, u->meta.deserialized_job, u, JOB_FAIL, false, NULL, NULL)) < 0) |
cca098b0 LP |
2037 | return r; |
2038 | ||
2039 | u->meta.deserialized_job = _JOB_TYPE_INVALID; | |
2040 | } | |
2041 | ||
2042 | return 0; | |
2043 | } | |
2044 | ||
9e58ff9c LP |
2045 | void unit_status_printf(Unit *u, const char *format, ...) { |
2046 | va_list ap; | |
2047 | ||
2048 | assert(u); | |
2049 | assert(format); | |
2050 | ||
2051 | if (!UNIT_VTABLE(u)->show_status) | |
2052 | return; | |
2053 | ||
2054 | if (u->meta.manager->running_as != MANAGER_SYSTEM) | |
2055 | return; | |
2056 | ||
2057 | if (!u->meta.manager->show_status) | |
2058 | return; | |
2059 | ||
2060 | if (!manager_is_booting_or_shutting_down(u->meta.manager)) | |
2061 | return; | |
2062 | ||
2063 | va_start(ap, format); | |
2064 | status_vprintf(format, ap); | |
2065 | va_end(ap); | |
2066 | } | |
2067 | ||
45fb0699 LP |
2068 | bool unit_need_daemon_reload(Unit *u) { |
2069 | struct stat st; | |
2070 | ||
2071 | assert(u); | |
2072 | ||
2073 | if (!u->meta.fragment_path) | |
2074 | return false; | |
2075 | ||
2076 | zero(st); | |
2077 | if (stat(u->meta.fragment_path, &st) < 0) | |
2078 | /* What, cannot access this anymore? */ | |
2079 | return true; | |
2080 | ||
2081 | return | |
2082 | u->meta.fragment_mtime && | |
2083 | timespec_load(&st.st_mtim) != u->meta.fragment_mtime; | |
2084 | } | |
2085 | ||
5632e374 LP |
2086 | void unit_reset_maintenance(Unit *u) { |
2087 | assert(u); | |
2088 | ||
2089 | if (UNIT_VTABLE(u)->reset_maintenance) | |
2090 | UNIT_VTABLE(u)->reset_maintenance(u); | |
2091 | } | |
2092 | ||
a7f241db LP |
2093 | Unit *unit_following(Unit *u) { |
2094 | assert(u); | |
2095 | ||
2096 | if (UNIT_VTABLE(u)->following) | |
2097 | return UNIT_VTABLE(u)->following(u); | |
2098 | ||
2099 | return NULL; | |
2100 | } | |
2101 | ||
94f04347 LP |
2102 | static const char* const unit_type_table[_UNIT_TYPE_MAX] = { |
2103 | [UNIT_SERVICE] = "service", | |
2104 | [UNIT_TIMER] = "timer", | |
2105 | [UNIT_SOCKET] = "socket", | |
2106 | [UNIT_TARGET] = "target", | |
2107 | [UNIT_DEVICE] = "device", | |
2108 | [UNIT_MOUNT] = "mount", | |
2109 | [UNIT_AUTOMOUNT] = "automount", | |
07b0b134 ML |
2110 | [UNIT_SNAPSHOT] = "snapshot", |
2111 | [UNIT_SWAP] = "swap" | |
94f04347 LP |
2112 | }; |
2113 | ||
2114 | DEFINE_STRING_TABLE_LOOKUP(unit_type, UnitType); | |
2115 | ||
2116 | static const char* const unit_load_state_table[_UNIT_LOAD_STATE_MAX] = { | |
2117 | [UNIT_STUB] = "stub", | |
2118 | [UNIT_LOADED] = "loaded", | |
23a177ef LP |
2119 | [UNIT_FAILED] = "failed", |
2120 | [UNIT_MERGED] = "merged" | |
94f04347 LP |
2121 | }; |
2122 | ||
2123 | DEFINE_STRING_TABLE_LOOKUP(unit_load_state, UnitLoadState); | |
2124 | ||
2125 | static const char* const unit_active_state_table[_UNIT_ACTIVE_STATE_MAX] = { | |
2126 | [UNIT_ACTIVE] = "active", | |
032ff4af | 2127 | [UNIT_RELOADING] = "reloading", |
94f04347 | 2128 | [UNIT_INACTIVE] = "inactive", |
032ff4af | 2129 | [UNIT_MAINTENANCE] = "maintenance", |
94f04347 LP |
2130 | [UNIT_ACTIVATING] = "activating", |
2131 | [UNIT_DEACTIVATING] = "deactivating" | |
2132 | }; | |
2133 | ||
2134 | DEFINE_STRING_TABLE_LOOKUP(unit_active_state, UnitActiveState); | |
2135 | ||
2136 | static const char* const unit_dependency_table[_UNIT_DEPENDENCY_MAX] = { | |
2137 | [UNIT_REQUIRES] = "Requires", | |
9e2f7c11 | 2138 | [UNIT_REQUIRES_OVERRIDABLE] = "RequiresOverridable", |
94f04347 LP |
2139 | [UNIT_WANTS] = "Wants", |
2140 | [UNIT_REQUISITE] = "Requisite", | |
9e2f7c11 | 2141 | [UNIT_REQUISITE_OVERRIDABLE] = "RequisiteOverridable", |
94f04347 | 2142 | [UNIT_REQUIRED_BY] = "RequiredBy", |
9e2f7c11 | 2143 | [UNIT_REQUIRED_BY_OVERRIDABLE] = "RequiredByOverridable", |
94f04347 LP |
2144 | [UNIT_WANTED_BY] = "WantedBy", |
2145 | [UNIT_CONFLICTS] = "Conflicts", | |
69dd2852 | 2146 | [UNIT_CONFLICTED_BY] = "ConflictedBy", |
94f04347 LP |
2147 | [UNIT_BEFORE] = "Before", |
2148 | [UNIT_AFTER] = "After", | |
701cc384 | 2149 | [UNIT_REFERENCES] = "References", |
5de9682c LP |
2150 | [UNIT_REFERENCED_BY] = "ReferencedBy", |
2151 | [UNIT_ON_FAILURE] = "OnFailure" | |
94f04347 LP |
2152 | }; |
2153 | ||
2154 | DEFINE_STRING_TABLE_LOOKUP(unit_dependency, UnitDependency); | |
50159e6a LP |
2155 | |
2156 | static const char* const kill_mode_table[_KILL_MODE_MAX] = { | |
80876c20 | 2157 | [KILL_CONTROL_GROUP] = "control-group", |
50159e6a | 2158 | [KILL_PROCESS_GROUP] = "process-group", |
80876c20 LP |
2159 | [KILL_PROCESS] = "process", |
2160 | [KILL_NONE] = "none" | |
50159e6a LP |
2161 | }; |
2162 | ||
2163 | DEFINE_STRING_TABLE_LOOKUP(kill_mode, KillMode); |