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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" |
87f0e418 LP |
45 | |
46 | const UnitVTable * const unit_vtable[_UNIT_TYPE_MAX] = { | |
47 | [UNIT_SERVICE] = &service_vtable, | |
48 | [UNIT_TIMER] = &timer_vtable, | |
49 | [UNIT_SOCKET] = &socket_vtable, | |
50 | [UNIT_TARGET] = &target_vtable, | |
51 | [UNIT_DEVICE] = &device_vtable, | |
52 | [UNIT_MOUNT] = &mount_vtable, | |
53 | [UNIT_AUTOMOUNT] = &automount_vtable, | |
07b0b134 | 54 | [UNIT_SNAPSHOT] = &snapshot_vtable, |
01f78473 LP |
55 | [UNIT_SWAP] = &swap_vtable, |
56 | [UNIT_PATH] = &path_vtable | |
87f0e418 LP |
57 | }; |
58 | ||
87f0e418 LP |
59 | Unit *unit_new(Manager *m) { |
60 | Unit *u; | |
61 | ||
62 | assert(m); | |
63 | ||
64 | if (!(u = new0(Unit, 1))) | |
65 | return NULL; | |
66 | ||
67 | if (!(u->meta.names = set_new(string_hash_func, string_compare_func))) { | |
68 | free(u); | |
69 | return NULL; | |
70 | } | |
71 | ||
72 | u->meta.manager = m; | |
73 | u->meta.type = _UNIT_TYPE_INVALID; | |
cca098b0 | 74 | u->meta.deserialized_job = _JOB_TYPE_INVALID; |
a40eb732 | 75 | u->meta.default_dependencies = true; |
a4375746 | 76 | u->meta.unit_file_state = _UNIT_FILE_STATE_INVALID; |
87f0e418 LP |
77 | |
78 | return u; | |
79 | } | |
80 | ||
f278026d LP |
81 | bool unit_has_name(Unit *u, const char *name) { |
82 | assert(u); | |
83 | assert(name); | |
84 | ||
85 | return !!set_get(u->meta.names, (char*) name); | |
86 | } | |
87 | ||
87f0e418 LP |
88 | int unit_add_name(Unit *u, const char *text) { |
89 | UnitType t; | |
276c3e78 | 90 | char *s, *i = NULL; |
87f0e418 LP |
91 | int r; |
92 | ||
93 | assert(u); | |
94 | assert(text); | |
95 | ||
9e2f7c11 LP |
96 | if (unit_name_is_template(text)) { |
97 | if (!u->meta.instance) | |
98 | return -EINVAL; | |
87f0e418 | 99 | |
9e2f7c11 LP |
100 | s = unit_name_replace_instance(text, u->meta.instance); |
101 | } else | |
102 | s = strdup(text); | |
87f0e418 | 103 | |
9e2f7c11 LP |
104 | if (!s) |
105 | return -ENOMEM; | |
87f0e418 | 106 | |
b9c0d441 | 107 | if (!unit_name_is_valid(s, false)) { |
9e2f7c11 LP |
108 | r = -EINVAL; |
109 | goto fail; | |
110 | } | |
e537352b | 111 | |
9e2f7c11 | 112 | assert_se((t = unit_name_to_type(s)) >= 0); |
87f0e418 | 113 | |
9e2f7c11 LP |
114 | if (u->meta.type != _UNIT_TYPE_INVALID && t != u->meta.type) { |
115 | r = -EINVAL; | |
116 | goto fail; | |
117 | } | |
87f0e418 | 118 | |
9e2f7c11 LP |
119 | if ((r = unit_name_to_instance(s, &i)) < 0) |
120 | goto fail; | |
87f0e418 | 121 | |
796ba554 LP |
122 | if (i && unit_vtable[t]->no_instances) { |
123 | r = -EINVAL; | |
9e2f7c11 | 124 | goto fail; |
796ba554 | 125 | } |
9e2f7c11 | 126 | |
276c3e78 LP |
127 | /* Ensure that this unit is either instanced or not instanced, |
128 | * but not both. */ | |
129 | if (u->meta.type != _UNIT_TYPE_INVALID && !u->meta.instance != !i) { | |
9e2f7c11 LP |
130 | r = -EINVAL; |
131 | goto fail; | |
132 | } | |
133 | ||
134 | if (unit_vtable[t]->no_alias && | |
135 | !set_isempty(u->meta.names) && | |
136 | !set_get(u->meta.names, s)) { | |
137 | r = -EEXIST; | |
138 | goto fail; | |
139 | } | |
140 | ||
4f0f902f LP |
141 | if (hashmap_size(u->meta.manager->units) >= MANAGER_MAX_NAMES) { |
142 | r = -E2BIG; | |
143 | goto fail; | |
144 | } | |
145 | ||
9e2f7c11 LP |
146 | if ((r = set_put(u->meta.names, s)) < 0) { |
147 | if (r == -EEXIST) | |
148 | r = 0; | |
149 | goto fail; | |
87f0e418 LP |
150 | } |
151 | ||
152 | if ((r = hashmap_put(u->meta.manager->units, s, u)) < 0) { | |
153 | set_remove(u->meta.names, s); | |
9e2f7c11 | 154 | goto fail; |
87f0e418 LP |
155 | } |
156 | ||
e537352b | 157 | if (u->meta.type == _UNIT_TYPE_INVALID) { |
ef734fd6 | 158 | |
e537352b | 159 | u->meta.type = t; |
9e2f7c11 LP |
160 | u->meta.id = s; |
161 | u->meta.instance = i; | |
162 | ||
ab5c3e3f | 163 | LIST_PREPEND(Meta, units_by_type, u->meta.manager->units_by_type[t], &u->meta); |
e537352b LP |
164 | |
165 | if (UNIT_VTABLE(u)->init) | |
166 | UNIT_VTABLE(u)->init(u); | |
9e2f7c11 LP |
167 | } else |
168 | free(i); | |
87f0e418 | 169 | |
c1e1601e | 170 | unit_add_to_dbus_queue(u); |
87f0e418 | 171 | return 0; |
9e2f7c11 LP |
172 | |
173 | fail: | |
174 | free(s); | |
175 | free(i); | |
176 | ||
177 | return r; | |
87f0e418 LP |
178 | } |
179 | ||
0ae97ec1 | 180 | int unit_choose_id(Unit *u, const char *name) { |
276c3e78 LP |
181 | char *s, *t = NULL, *i; |
182 | int r; | |
0ae97ec1 LP |
183 | |
184 | assert(u); | |
185 | assert(name); | |
186 | ||
9e2f7c11 LP |
187 | if (unit_name_is_template(name)) { |
188 | ||
189 | if (!u->meta.instance) | |
190 | return -EINVAL; | |
191 | ||
192 | if (!(t = unit_name_replace_instance(name, u->meta.instance))) | |
193 | return -ENOMEM; | |
194 | ||
195 | name = t; | |
196 | } | |
197 | ||
0ae97ec1 | 198 | /* Selects one of the names of this unit as the id */ |
9e2f7c11 LP |
199 | s = set_get(u->meta.names, (char*) name); |
200 | free(t); | |
0ae97ec1 | 201 | |
9e2f7c11 | 202 | if (!s) |
0ae97ec1 LP |
203 | return -ENOENT; |
204 | ||
276c3e78 LP |
205 | if ((r = unit_name_to_instance(s, &i)) < 0) |
206 | return r; | |
207 | ||
0ae97ec1 | 208 | u->meta.id = s; |
276c3e78 LP |
209 | |
210 | free(u->meta.instance); | |
211 | u->meta.instance = i; | |
212 | ||
c1e1601e | 213 | unit_add_to_dbus_queue(u); |
9e2f7c11 | 214 | |
0ae97ec1 LP |
215 | return 0; |
216 | } | |
217 | ||
f50e0a01 LP |
218 | int unit_set_description(Unit *u, const char *description) { |
219 | char *s; | |
220 | ||
221 | assert(u); | |
222 | ||
223 | if (!(s = strdup(description))) | |
224 | return -ENOMEM; | |
225 | ||
226 | free(u->meta.description); | |
227 | u->meta.description = s; | |
c1e1601e LP |
228 | |
229 | unit_add_to_dbus_queue(u); | |
f50e0a01 LP |
230 | return 0; |
231 | } | |
232 | ||
701cc384 LP |
233 | bool unit_check_gc(Unit *u) { |
234 | assert(u); | |
235 | ||
b86d44e5 LP |
236 | if (u->meta.load_state == UNIT_STUB) |
237 | return true; | |
238 | ||
701cc384 LP |
239 | if (UNIT_VTABLE(u)->no_gc) |
240 | return true; | |
241 | ||
6c073082 LP |
242 | if (u->meta.no_gc) |
243 | return true; | |
244 | ||
701cc384 LP |
245 | if (u->meta.job) |
246 | return true; | |
247 | ||
248 | if (unit_active_state(u) != UNIT_INACTIVE) | |
249 | return true; | |
250 | ||
251 | if (UNIT_VTABLE(u)->check_gc) | |
252 | if (UNIT_VTABLE(u)->check_gc(u)) | |
253 | return true; | |
254 | ||
255 | return false; | |
256 | } | |
257 | ||
87f0e418 LP |
258 | void unit_add_to_load_queue(Unit *u) { |
259 | assert(u); | |
819e213f | 260 | assert(u->meta.type != _UNIT_TYPE_INVALID); |
87f0e418 LP |
261 | |
262 | if (u->meta.load_state != UNIT_STUB || u->meta.in_load_queue) | |
263 | return; | |
264 | ||
265 | LIST_PREPEND(Meta, load_queue, u->meta.manager->load_queue, &u->meta); | |
266 | u->meta.in_load_queue = true; | |
267 | } | |
268 | ||
23a177ef LP |
269 | void unit_add_to_cleanup_queue(Unit *u) { |
270 | assert(u); | |
271 | ||
272 | if (u->meta.in_cleanup_queue) | |
273 | return; | |
274 | ||
275 | LIST_PREPEND(Meta, cleanup_queue, u->meta.manager->cleanup_queue, &u->meta); | |
276 | u->meta.in_cleanup_queue = true; | |
277 | } | |
278 | ||
701cc384 LP |
279 | void unit_add_to_gc_queue(Unit *u) { |
280 | assert(u); | |
281 | ||
282 | if (u->meta.in_gc_queue || u->meta.in_cleanup_queue) | |
283 | return; | |
284 | ||
285 | if (unit_check_gc(u)) | |
286 | return; | |
287 | ||
288 | LIST_PREPEND(Meta, gc_queue, u->meta.manager->gc_queue, &u->meta); | |
289 | u->meta.in_gc_queue = true; | |
290 | ||
291 | u->meta.manager->n_in_gc_queue ++; | |
292 | ||
293 | if (u->meta.manager->gc_queue_timestamp <= 0) | |
294 | u->meta.manager->gc_queue_timestamp = now(CLOCK_MONOTONIC); | |
295 | } | |
296 | ||
c1e1601e LP |
297 | void unit_add_to_dbus_queue(Unit *u) { |
298 | assert(u); | |
819e213f | 299 | assert(u->meta.type != _UNIT_TYPE_INVALID); |
c1e1601e | 300 | |
94b6dfa2 | 301 | if (u->meta.load_state == UNIT_STUB || u->meta.in_dbus_queue) |
c1e1601e LP |
302 | return; |
303 | ||
a567261a LP |
304 | /* Shortcut things if nobody cares */ |
305 | if (!bus_has_subscriber(u->meta.manager)) { | |
94b6dfa2 LP |
306 | u->meta.sent_dbus_new_signal = true; |
307 | return; | |
308 | } | |
309 | ||
c1e1601e LP |
310 | LIST_PREPEND(Meta, dbus_queue, u->meta.manager->dbus_unit_queue, &u->meta); |
311 | u->meta.in_dbus_queue = true; | |
312 | } | |
313 | ||
87f0e418 LP |
314 | static void bidi_set_free(Unit *u, Set *s) { |
315 | Iterator i; | |
316 | Unit *other; | |
317 | ||
318 | assert(u); | |
319 | ||
320 | /* Frees the set and makes sure we are dropped from the | |
321 | * inverse pointers */ | |
322 | ||
323 | SET_FOREACH(other, s, i) { | |
324 | UnitDependency d; | |
325 | ||
326 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) | |
327 | set_remove(other->meta.dependencies[d], u); | |
701cc384 LP |
328 | |
329 | unit_add_to_gc_queue(other); | |
87f0e418 LP |
330 | } |
331 | ||
332 | set_free(s); | |
333 | } | |
334 | ||
335 | void unit_free(Unit *u) { | |
336 | UnitDependency d; | |
337 | Iterator i; | |
338 | char *t; | |
339 | ||
340 | assert(u); | |
341 | ||
c1e1601e LP |
342 | bus_unit_send_removed_signal(u); |
343 | ||
a013b84b LP |
344 | if (u->meta.load_state != UNIT_STUB) |
345 | if (UNIT_VTABLE(u)->done) | |
346 | UNIT_VTABLE(u)->done(u); | |
347 | ||
87f0e418 LP |
348 | SET_FOREACH(t, u->meta.names, i) |
349 | hashmap_remove_value(u->meta.manager->units, t, u); | |
350 | ||
964e0949 LP |
351 | if (u->meta.job) |
352 | job_free(u->meta.job); | |
353 | ||
354 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) | |
355 | bidi_set_free(u, u->meta.dependencies[d]); | |
356 | ||
ef734fd6 | 357 | if (u->meta.type != _UNIT_TYPE_INVALID) |
ab5c3e3f | 358 | LIST_REMOVE(Meta, units_by_type, u->meta.manager->units_by_type[u->meta.type], &u->meta); |
ef734fd6 | 359 | |
87f0e418 LP |
360 | if (u->meta.in_load_queue) |
361 | LIST_REMOVE(Meta, load_queue, u->meta.manager->load_queue, &u->meta); | |
362 | ||
c1e1601e LP |
363 | if (u->meta.in_dbus_queue) |
364 | LIST_REMOVE(Meta, dbus_queue, u->meta.manager->dbus_unit_queue, &u->meta); | |
365 | ||
23a177ef LP |
366 | if (u->meta.in_cleanup_queue) |
367 | LIST_REMOVE(Meta, cleanup_queue, u->meta.manager->cleanup_queue, &u->meta); | |
368 | ||
701cc384 LP |
369 | if (u->meta.in_gc_queue) { |
370 | LIST_REMOVE(Meta, gc_queue, u->meta.manager->gc_queue, &u->meta); | |
371 | u->meta.manager->n_in_gc_queue--; | |
372 | } | |
373 | ||
a7556052 | 374 | cgroup_bonding_free_list(u->meta.cgroup_bondings, u->meta.manager->n_reloading <= 0); |
87f0e418 | 375 | |
87f0e418 | 376 | free(u->meta.description); |
6be1e7d5 | 377 | free(u->meta.fragment_path); |
87f0e418 | 378 | |
53ec43c6 | 379 | set_free_free(u->meta.names); |
87f0e418 | 380 | |
52661efd LP |
381 | condition_free_list(u->meta.conditions); |
382 | ||
9e2f7c11 | 383 | free(u->meta.instance); |
87f0e418 LP |
384 | free(u); |
385 | } | |
386 | ||
387 | UnitActiveState unit_active_state(Unit *u) { | |
388 | assert(u); | |
389 | ||
6124958c LP |
390 | if (u->meta.load_state == UNIT_MERGED) |
391 | return unit_active_state(unit_follow_merge(u)); | |
392 | ||
393 | /* After a reload it might happen that a unit is not correctly | |
394 | * loaded but still has a process around. That's why we won't | |
fdf20a31 | 395 | * shortcut failed loading to UNIT_INACTIVE_FAILED. */ |
87f0e418 LP |
396 | |
397 | return UNIT_VTABLE(u)->active_state(u); | |
398 | } | |
399 | ||
10a94420 LP |
400 | const char* unit_sub_state_to_string(Unit *u) { |
401 | assert(u); | |
402 | ||
403 | return UNIT_VTABLE(u)->sub_state_to_string(u); | |
404 | } | |
405 | ||
23a177ef LP |
406 | static void complete_move(Set **s, Set **other) { |
407 | assert(s); | |
408 | assert(other); | |
87f0e418 | 409 | |
23a177ef LP |
410 | if (!*other) |
411 | return; | |
87f0e418 LP |
412 | |
413 | if (*s) | |
23a177ef LP |
414 | set_move(*s, *other); |
415 | else { | |
416 | *s = *other; | |
417 | *other = NULL; | |
418 | } | |
419 | } | |
87f0e418 | 420 | |
23a177ef LP |
421 | static void merge_names(Unit *u, Unit *other) { |
422 | char *t; | |
423 | Iterator i; | |
87f0e418 | 424 | |
23a177ef LP |
425 | assert(u); |
426 | assert(other); | |
427 | ||
428 | complete_move(&u->meta.names, &other->meta.names); | |
429 | ||
53ec43c6 | 430 | set_free_free(other->meta.names); |
23a177ef LP |
431 | other->meta.names = NULL; |
432 | other->meta.id = NULL; | |
433 | ||
434 | SET_FOREACH(t, u->meta.names, i) | |
435 | assert_se(hashmap_replace(u->meta.manager->units, t, u) == 0); | |
87f0e418 LP |
436 | } |
437 | ||
23a177ef LP |
438 | static void merge_dependencies(Unit *u, Unit *other, UnitDependency d) { |
439 | Iterator i; | |
440 | Unit *back; | |
87f0e418 | 441 | int r; |
23a177ef LP |
442 | |
443 | assert(u); | |
444 | assert(other); | |
445 | assert(d < _UNIT_DEPENDENCY_MAX); | |
446 | ||
83a95334 | 447 | /* Fix backwards pointers */ |
23a177ef LP |
448 | SET_FOREACH(back, other->meta.dependencies[d], i) { |
449 | UnitDependency k; | |
450 | ||
451 | for (k = 0; k < _UNIT_DEPENDENCY_MAX; k++) | |
452 | if ((r = set_remove_and_put(back->meta.dependencies[k], other, u)) < 0) { | |
453 | ||
454 | if (r == -EEXIST) | |
455 | set_remove(back->meta.dependencies[k], other); | |
456 | else | |
457 | assert(r == -ENOENT); | |
458 | } | |
459 | } | |
460 | ||
461 | complete_move(&u->meta.dependencies[d], &other->meta.dependencies[d]); | |
462 | ||
463 | set_free(other->meta.dependencies[d]); | |
464 | other->meta.dependencies[d] = NULL; | |
465 | } | |
466 | ||
467 | int unit_merge(Unit *u, Unit *other) { | |
87f0e418 LP |
468 | UnitDependency d; |
469 | ||
470 | assert(u); | |
471 | assert(other); | |
472 | assert(u->meta.manager == other->meta.manager); | |
9e2f7c11 | 473 | assert(u->meta.type != _UNIT_TYPE_INVALID); |
87f0e418 | 474 | |
cc916967 LP |
475 | other = unit_follow_merge(other); |
476 | ||
23a177ef LP |
477 | if (other == u) |
478 | return 0; | |
479 | ||
9e2f7c11 LP |
480 | if (u->meta.type != other->meta.type) |
481 | return -EINVAL; | |
482 | ||
276c3e78 | 483 | if (!u->meta.instance != !other->meta.instance) |
87f0e418 LP |
484 | return -EINVAL; |
485 | ||
cc916967 | 486 | if (other->meta.load_state != UNIT_STUB && |
fdf20a31 | 487 | other->meta.load_state != UNIT_ERROR) |
23a177ef | 488 | return -EEXIST; |
87f0e418 | 489 | |
819e213f LP |
490 | if (other->meta.job) |
491 | return -EEXIST; | |
492 | ||
fdf20a31 | 493 | if (!UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other))) |
819e213f LP |
494 | return -EEXIST; |
495 | ||
87f0e418 | 496 | /* Merge names */ |
23a177ef | 497 | merge_names(u, other); |
87f0e418 LP |
498 | |
499 | /* Merge dependencies */ | |
500 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) | |
23a177ef | 501 | merge_dependencies(u, other, d); |
87f0e418 | 502 | |
23a177ef LP |
503 | other->meta.load_state = UNIT_MERGED; |
504 | other->meta.merged_into = u; | |
505 | ||
3616a49c LP |
506 | /* If there is still some data attached to the other node, we |
507 | * don't need it anymore, and can free it. */ | |
508 | if (other->meta.load_state != UNIT_STUB) | |
509 | if (UNIT_VTABLE(other)->done) | |
510 | UNIT_VTABLE(other)->done(other); | |
511 | ||
512 | unit_add_to_dbus_queue(u); | |
23a177ef LP |
513 | unit_add_to_cleanup_queue(other); |
514 | ||
515 | return 0; | |
516 | } | |
517 | ||
518 | int unit_merge_by_name(Unit *u, const char *name) { | |
519 | Unit *other; | |
9e2f7c11 LP |
520 | int r; |
521 | char *s = NULL; | |
23a177ef LP |
522 | |
523 | assert(u); | |
524 | assert(name); | |
525 | ||
9e2f7c11 LP |
526 | if (unit_name_is_template(name)) { |
527 | if (!u->meta.instance) | |
528 | return -EINVAL; | |
529 | ||
530 | if (!(s = unit_name_replace_instance(name, u->meta.instance))) | |
531 | return -ENOMEM; | |
532 | ||
533 | name = s; | |
534 | } | |
535 | ||
23a177ef | 536 | if (!(other = manager_get_unit(u->meta.manager, name))) |
9e2f7c11 LP |
537 | r = unit_add_name(u, name); |
538 | else | |
539 | r = unit_merge(u, other); | |
23a177ef | 540 | |
9e2f7c11 LP |
541 | free(s); |
542 | return r; | |
23a177ef LP |
543 | } |
544 | ||
545 | Unit* unit_follow_merge(Unit *u) { | |
546 | assert(u); | |
547 | ||
548 | while (u->meta.load_state == UNIT_MERGED) | |
549 | assert_se(u = u->meta.merged_into); | |
550 | ||
551 | return u; | |
552 | } | |
553 | ||
554 | int unit_add_exec_dependencies(Unit *u, ExecContext *c) { | |
555 | int r; | |
556 | ||
557 | assert(u); | |
558 | assert(c); | |
559 | ||
ecc6e2b8 LP |
560 | if (c->std_output != EXEC_OUTPUT_KMSG && |
561 | c->std_output != EXEC_OUTPUT_SYSLOG && | |
28dbc1e8 LP |
562 | c->std_output != EXEC_OUTPUT_KMSG_AND_CONSOLE && |
563 | c->std_output != EXEC_OUTPUT_SYSLOG_AND_CONSOLE && | |
ecc6e2b8 | 564 | c->std_error != EXEC_OUTPUT_KMSG && |
28dbc1e8 LP |
565 | c->std_error != EXEC_OUTPUT_SYSLOG_AND_CONSOLE && |
566 | c->std_error != EXEC_OUTPUT_KMSG && | |
567 | c->std_error != EXEC_OUTPUT_SYSLOG_AND_CONSOLE) | |
23a177ef LP |
568 | return 0; |
569 | ||
570 | /* If syslog or kernel logging is requested, make sure our own | |
571 | * logging daemon is run first. */ | |
572 | ||
a3d4e06d | 573 | if (u->meta.manager->running_as == MANAGER_SYSTEM) |
ffd73e35 | 574 | if ((r = unit_add_two_dependencies_by_name(u, UNIT_REQUIRES, UNIT_AFTER, SPECIAL_LOGGER_SOCKET, NULL, true)) < 0) |
23a177ef LP |
575 | return r; |
576 | ||
87f0e418 LP |
577 | return 0; |
578 | } | |
579 | ||
87f0e418 LP |
580 | const char *unit_description(Unit *u) { |
581 | assert(u); | |
582 | ||
583 | if (u->meta.description) | |
584 | return u->meta.description; | |
585 | ||
9f151f29 | 586 | return strna(u->meta.id); |
87f0e418 LP |
587 | } |
588 | ||
589 | void unit_dump(Unit *u, FILE *f, const char *prefix) { | |
87f0e418 LP |
590 | char *t; |
591 | UnitDependency d; | |
592 | Iterator i; | |
47be870b LP |
593 | char *p2; |
594 | const char *prefix2; | |
8e274523 | 595 | CGroupBonding *b; |
173e3821 LP |
596 | char |
597 | timestamp1[FORMAT_TIMESTAMP_MAX], | |
598 | timestamp2[FORMAT_TIMESTAMP_MAX], | |
599 | timestamp3[FORMAT_TIMESTAMP_MAX], | |
faf919f1 LP |
600 | timestamp4[FORMAT_TIMESTAMP_MAX], |
601 | timespan[FORMAT_TIMESPAN_MAX]; | |
a7f241db | 602 | Unit *following; |
87f0e418 LP |
603 | |
604 | assert(u); | |
9e2f7c11 | 605 | assert(u->meta.type >= 0); |
87f0e418 LP |
606 | |
607 | if (!prefix) | |
608 | prefix = ""; | |
47be870b LP |
609 | p2 = strappend(prefix, "\t"); |
610 | prefix2 = p2 ? p2 : prefix; | |
87f0e418 LP |
611 | |
612 | fprintf(f, | |
40d50879 | 613 | "%s-> Unit %s:\n" |
87f0e418 | 614 | "%s\tDescription: %s\n" |
9e2f7c11 | 615 | "%s\tInstance: %s\n" |
87f0e418 | 616 | "%s\tUnit Load State: %s\n" |
2fad8195 | 617 | "%s\tUnit Active State: %s\n" |
173e3821 | 618 | "%s\tInactive Exit Timestamp: %s\n" |
2fad8195 | 619 | "%s\tActive Enter Timestamp: %s\n" |
701cc384 | 620 | "%s\tActive Exit Timestamp: %s\n" |
173e3821 | 621 | "%s\tInactive Enter Timestamp: %s\n" |
45fb0699 LP |
622 | "%s\tGC Check Good: %s\n" |
623 | "%s\tNeed Daemon Reload: %s\n", | |
9e2f7c11 | 624 | prefix, u->meta.id, |
87f0e418 | 625 | prefix, unit_description(u), |
9e2f7c11 | 626 | prefix, strna(u->meta.instance), |
94f04347 | 627 | prefix, unit_load_state_to_string(u->meta.load_state), |
2fad8195 | 628 | prefix, unit_active_state_to_string(unit_active_state(u)), |
871d7de4 LP |
629 | prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->meta.inactive_exit_timestamp.realtime)), |
630 | prefix, strna(format_timestamp(timestamp2, sizeof(timestamp2), u->meta.active_enter_timestamp.realtime)), | |
631 | prefix, strna(format_timestamp(timestamp3, sizeof(timestamp3), u->meta.active_exit_timestamp.realtime)), | |
632 | prefix, strna(format_timestamp(timestamp4, sizeof(timestamp4), u->meta.inactive_enter_timestamp.realtime)), | |
45fb0699 LP |
633 | prefix, yes_no(unit_check_gc(u)), |
634 | prefix, yes_no(unit_need_daemon_reload(u))); | |
0301abf4 | 635 | |
87f0e418 LP |
636 | SET_FOREACH(t, u->meta.names, i) |
637 | fprintf(f, "%s\tName: %s\n", prefix, t); | |
638 | ||
a7f241db LP |
639 | if ((following = unit_following(u))) |
640 | fprintf(f, "%s\tFollowing: %s\n", prefix, following->meta.id); | |
8fe914ec | 641 | |
23a177ef LP |
642 | if (u->meta.fragment_path) |
643 | fprintf(f, "%s\tFragment Path: %s\n", prefix, u->meta.fragment_path); | |
644 | ||
faf919f1 LP |
645 | if (u->meta.job_timeout > 0) |
646 | fprintf(f, "%s\tJob Timeout: %s\n", prefix, format_timespan(timespan, sizeof(timespan), u->meta.job_timeout)); | |
647 | ||
52661efd LP |
648 | condition_dump_list(u->meta.conditions, f, prefix); |
649 | ||
2791a8f8 LP |
650 | if (dual_timestamp_is_set(&u->meta.condition_timestamp)) |
651 | fprintf(f, | |
652 | "%s\tCondition Timestamp: %s\n" | |
653 | "%s\tCondition Result: %s\n", | |
654 | prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->meta.condition_timestamp.realtime)), | |
655 | prefix, yes_no(u->meta.condition_result)); | |
656 | ||
87f0e418 LP |
657 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) { |
658 | Unit *other; | |
659 | ||
87f0e418 | 660 | SET_FOREACH(other, u->meta.dependencies[d], i) |
9e2f7c11 | 661 | fprintf(f, "%s\t%s: %s\n", prefix, unit_dependency_to_string(d), other->meta.id); |
87f0e418 LP |
662 | } |
663 | ||
23a177ef | 664 | if (u->meta.load_state == UNIT_LOADED) { |
b0650475 | 665 | fprintf(f, |
a40eb732 | 666 | "%s\tStopWhenUnneeded: %s\n" |
b5e9dba8 LP |
667 | "%s\tRefuseManualStart: %s\n" |
668 | "%s\tRefuseManualStop: %s\n" | |
222ae6a8 | 669 | "%s\tDefaultDependencies: %s\n" |
c8f4d764 | 670 | "%s\tOnFailureIsolate: %s\n" |
7a6000a6 LP |
671 | "%s\tIgnoreOnIsolate: %s\n" |
672 | "%s\tIgnoreOnSnapshot: %s\n", | |
a40eb732 | 673 | prefix, yes_no(u->meta.stop_when_unneeded), |
b5e9dba8 LP |
674 | prefix, yes_no(u->meta.refuse_manual_start), |
675 | prefix, yes_no(u->meta.refuse_manual_stop), | |
222ae6a8 | 676 | prefix, yes_no(u->meta.default_dependencies), |
c8f4d764 | 677 | prefix, yes_no(u->meta.on_failure_isolate), |
7a6000a6 LP |
678 | prefix, yes_no(u->meta.ignore_on_isolate), |
679 | prefix, yes_no(u->meta.ignore_on_snapshot)); | |
b0650475 | 680 | |
23a177ef LP |
681 | LIST_FOREACH(by_unit, b, u->meta.cgroup_bondings) |
682 | fprintf(f, "%s\tControlGroup: %s:%s\n", | |
683 | prefix, b->controller, b->path); | |
8e274523 | 684 | |
23a177ef LP |
685 | if (UNIT_VTABLE(u)->dump) |
686 | UNIT_VTABLE(u)->dump(u, f, prefix2); | |
b0650475 LP |
687 | |
688 | } else if (u->meta.load_state == UNIT_MERGED) | |
689 | fprintf(f, | |
690 | "%s\tMerged into: %s\n", | |
9e2f7c11 | 691 | prefix, u->meta.merged_into->meta.id); |
fdf20a31 | 692 | else if (u->meta.load_state == UNIT_ERROR) |
8821a00f LP |
693 | fprintf(f, "%s\tLoad Error Code: %s\n", prefix, strerror(-u->meta.load_error)); |
694 | ||
87f0e418 LP |
695 | |
696 | if (u->meta.job) | |
697 | job_dump(u->meta.job, f, prefix2); | |
698 | ||
47be870b | 699 | free(p2); |
87f0e418 LP |
700 | } |
701 | ||
702 | /* Common implementation for multiple backends */ | |
e537352b | 703 | int unit_load_fragment_and_dropin(Unit *u) { |
23a177ef LP |
704 | int r; |
705 | ||
706 | assert(u); | |
23a177ef LP |
707 | |
708 | /* Load a .service file */ | |
e537352b | 709 | if ((r = unit_load_fragment(u)) < 0) |
23a177ef LP |
710 | return r; |
711 | ||
e537352b | 712 | if (u->meta.load_state == UNIT_STUB) |
23a177ef LP |
713 | return -ENOENT; |
714 | ||
715 | /* Load drop-in directory data */ | |
716 | if ((r = unit_load_dropin(unit_follow_merge(u))) < 0) | |
717 | return r; | |
718 | ||
719 | return 0; | |
720 | } | |
721 | ||
722 | /* Common implementation for multiple backends */ | |
e537352b | 723 | int unit_load_fragment_and_dropin_optional(Unit *u) { |
23a177ef | 724 | int r; |
87f0e418 LP |
725 | |
726 | assert(u); | |
727 | ||
23a177ef LP |
728 | /* Same as unit_load_fragment_and_dropin(), but whether |
729 | * something can be loaded or not doesn't matter. */ | |
730 | ||
731 | /* Load a .service file */ | |
e537352b | 732 | if ((r = unit_load_fragment(u)) < 0) |
87f0e418 LP |
733 | return r; |
734 | ||
e537352b LP |
735 | if (u->meta.load_state == UNIT_STUB) |
736 | u->meta.load_state = UNIT_LOADED; | |
d46de8a1 | 737 | |
87f0e418 | 738 | /* Load drop-in directory data */ |
23a177ef | 739 | if ((r = unit_load_dropin(unit_follow_merge(u))) < 0) |
87f0e418 LP |
740 | return r; |
741 | ||
23a177ef | 742 | return 0; |
87f0e418 LP |
743 | } |
744 | ||
bba34eed | 745 | int unit_add_default_target_dependency(Unit *u, Unit *target) { |
98bc2000 LP |
746 | assert(u); |
747 | assert(target); | |
748 | ||
749 | if (target->meta.type != UNIT_TARGET) | |
750 | return 0; | |
751 | ||
35b8ca3a | 752 | /* Only add the dependency if both units are loaded, so that |
bba34eed LP |
753 | * that loop check below is reliable */ |
754 | if (u->meta.load_state != UNIT_LOADED || | |
755 | target->meta.load_state != UNIT_LOADED) | |
756 | return 0; | |
757 | ||
21256a2b LP |
758 | /* If either side wants no automatic dependencies, then let's |
759 | * skip this */ | |
760 | if (!u->meta.default_dependencies || | |
761 | target->meta.default_dependencies) | |
762 | return 0; | |
763 | ||
98bc2000 LP |
764 | /* Don't create loops */ |
765 | if (set_get(target->meta.dependencies[UNIT_BEFORE], u)) | |
766 | return 0; | |
767 | ||
768 | return unit_add_dependency(target, UNIT_AFTER, u, true); | |
769 | } | |
770 | ||
771 | static int unit_add_default_dependencies(Unit *u) { | |
21256a2b LP |
772 | static const UnitDependency deps[] = { |
773 | UNIT_REQUIRED_BY, | |
774 | UNIT_REQUIRED_BY_OVERRIDABLE, | |
775 | UNIT_WANTED_BY, | |
776 | UNIT_BOUND_BY | |
777 | }; | |
778 | ||
bba34eed | 779 | Unit *target; |
98bc2000 LP |
780 | Iterator i; |
781 | int r; | |
21256a2b | 782 | unsigned k; |
98bc2000 LP |
783 | |
784 | assert(u); | |
785 | ||
21256a2b LP |
786 | for (k = 0; k < ELEMENTSOF(deps); k++) |
787 | SET_FOREACH(target, u->meta.dependencies[deps[k]], i) | |
788 | if ((r = unit_add_default_target_dependency(u, target)) < 0) | |
789 | return r; | |
b81884e7 | 790 | |
98bc2000 LP |
791 | return 0; |
792 | } | |
793 | ||
87f0e418 LP |
794 | int unit_load(Unit *u) { |
795 | int r; | |
796 | ||
797 | assert(u); | |
798 | ||
799 | if (u->meta.in_load_queue) { | |
800 | LIST_REMOVE(Meta, load_queue, u->meta.manager->load_queue, &u->meta); | |
801 | u->meta.in_load_queue = false; | |
802 | } | |
803 | ||
e537352b LP |
804 | if (u->meta.type == _UNIT_TYPE_INVALID) |
805 | return -EINVAL; | |
806 | ||
87f0e418 LP |
807 | if (u->meta.load_state != UNIT_STUB) |
808 | return 0; | |
809 | ||
e537352b LP |
810 | if (UNIT_VTABLE(u)->load) |
811 | if ((r = UNIT_VTABLE(u)->load(u)) < 0) | |
87f0e418 | 812 | goto fail; |
23a177ef | 813 | |
e537352b | 814 | if (u->meta.load_state == UNIT_STUB) { |
23a177ef LP |
815 | r = -ENOENT; |
816 | goto fail; | |
817 | } | |
818 | ||
98bc2000 LP |
819 | if (u->meta.load_state == UNIT_LOADED && |
820 | u->meta.default_dependencies) | |
821 | if ((r = unit_add_default_dependencies(u)) < 0) | |
822 | goto fail; | |
823 | ||
f68319bb LP |
824 | if (u->meta.on_failure_isolate && |
825 | set_size(u->meta.dependencies[UNIT_ON_FAILURE]) > 1) { | |
826 | ||
827 | log_error("More than one OnFailure= dependencies specified for %s but OnFailureIsolate= enabled. Refusing.", | |
828 | u->meta.id); | |
829 | ||
830 | r = -EINVAL; | |
831 | goto fail; | |
832 | } | |
833 | ||
23a177ef LP |
834 | assert((u->meta.load_state != UNIT_MERGED) == !u->meta.merged_into); |
835 | ||
836 | unit_add_to_dbus_queue(unit_follow_merge(u)); | |
701cc384 | 837 | unit_add_to_gc_queue(u); |
87f0e418 | 838 | |
87f0e418 LP |
839 | return 0; |
840 | ||
841 | fail: | |
fdf20a31 | 842 | u->meta.load_state = UNIT_ERROR; |
8821a00f | 843 | u->meta.load_error = r; |
c1e1601e | 844 | unit_add_to_dbus_queue(u); |
23a177ef | 845 | |
8821a00f | 846 | log_debug("Failed to load configuration for %s: %s", u->meta.id, strerror(-r)); |
23a177ef | 847 | |
87f0e418 LP |
848 | return r; |
849 | } | |
850 | ||
90bbc946 LP |
851 | bool unit_condition_test(Unit *u) { |
852 | assert(u); | |
853 | ||
854 | dual_timestamp_get(&u->meta.condition_timestamp); | |
855 | u->meta.condition_result = condition_test_list(u->meta.conditions); | |
856 | ||
857 | return u->meta.condition_result; | |
858 | } | |
859 | ||
87f0e418 | 860 | /* Errors: |
d5159713 LP |
861 | * -EBADR: This unit type does not support starting. |
862 | * -EALREADY: Unit is already started. | |
863 | * -EAGAIN: An operation is already in progress. Retry later. | |
864 | * -ECANCELED: Too many requests for now. | |
87f0e418 LP |
865 | */ |
866 | int unit_start(Unit *u) { | |
867 | UnitActiveState state; | |
92ab323c | 868 | Unit *following; |
87f0e418 LP |
869 | |
870 | assert(u); | |
871 | ||
6124958c LP |
872 | if (u->meta.load_state != UNIT_LOADED) |
873 | return -EINVAL; | |
874 | ||
7898b0cf LP |
875 | /* If this is already (being) started, then this will |
876 | * succeed. Note that this will even succeed if this unit is | |
877 | * not startable by the user. This is relied on to detect when | |
878 | * we need to wait for units and when waiting is finished. */ | |
87f0e418 LP |
879 | state = unit_active_state(u); |
880 | if (UNIT_IS_ACTIVE_OR_RELOADING(state)) | |
881 | return -EALREADY; | |
882 | ||
52661efd | 883 | /* If the conditions failed, don't do anything at all */ |
90bbc946 | 884 | if (!unit_condition_test(u)) { |
52661efd LP |
885 | log_debug("Starting of %s requested but condition failed. Ignoring.", u->meta.id); |
886 | return -EALREADY; | |
887 | } | |
888 | ||
92ab323c LP |
889 | /* Forward to the main object, if we aren't it. */ |
890 | if ((following = unit_following(u))) { | |
891 | log_debug("Redirecting start request from %s to %s.", u->meta.id, following->meta.id); | |
892 | return unit_start(following); | |
893 | } | |
894 | ||
895 | /* If it is stopped, but we cannot start it, then fail */ | |
896 | if (!UNIT_VTABLE(u)->start) | |
897 | return -EBADR; | |
898 | ||
87f0e418 LP |
899 | /* We don't suppress calls to ->start() here when we are |
900 | * already starting, to allow this request to be used as a | |
901 | * "hurry up" call, for example when the unit is in some "auto | |
902 | * restart" state where it waits for a holdoff timer to elapse | |
903 | * before it will start again. */ | |
904 | ||
c1e1601e | 905 | unit_add_to_dbus_queue(u); |
9e58ff9c LP |
906 | |
907 | unit_status_printf(u, "Starting %s...\n", unit_description(u)); | |
87f0e418 LP |
908 | return UNIT_VTABLE(u)->start(u); |
909 | } | |
910 | ||
911 | bool unit_can_start(Unit *u) { | |
912 | assert(u); | |
913 | ||
914 | return !!UNIT_VTABLE(u)->start; | |
915 | } | |
916 | ||
2528a7a6 LP |
917 | bool unit_can_isolate(Unit *u) { |
918 | assert(u); | |
919 | ||
920 | return unit_can_start(u) && | |
921 | u->meta.allow_isolate; | |
922 | } | |
923 | ||
87f0e418 LP |
924 | /* Errors: |
925 | * -EBADR: This unit type does not support stopping. | |
926 | * -EALREADY: Unit is already stopped. | |
927 | * -EAGAIN: An operation is already in progress. Retry later. | |
928 | */ | |
929 | int unit_stop(Unit *u) { | |
930 | UnitActiveState state; | |
92ab323c | 931 | Unit *following; |
87f0e418 LP |
932 | |
933 | assert(u); | |
934 | ||
87f0e418 | 935 | state = unit_active_state(u); |
fdf20a31 | 936 | if (UNIT_IS_INACTIVE_OR_FAILED(state)) |
87f0e418 LP |
937 | return -EALREADY; |
938 | ||
92ab323c LP |
939 | if ((following = unit_following(u))) { |
940 | log_debug("Redirecting stop request from %s to %s.", u->meta.id, following->meta.id); | |
941 | return unit_stop(following); | |
942 | } | |
943 | ||
7898b0cf LP |
944 | if (!UNIT_VTABLE(u)->stop) |
945 | return -EBADR; | |
946 | ||
c1e1601e | 947 | unit_add_to_dbus_queue(u); |
9e58ff9c LP |
948 | |
949 | unit_status_printf(u, "Stopping %s...\n", unit_description(u)); | |
87f0e418 LP |
950 | return UNIT_VTABLE(u)->stop(u); |
951 | } | |
952 | ||
953 | /* Errors: | |
954 | * -EBADR: This unit type does not support reloading. | |
955 | * -ENOEXEC: Unit is not started. | |
956 | * -EAGAIN: An operation is already in progress. Retry later. | |
957 | */ | |
958 | int unit_reload(Unit *u) { | |
959 | UnitActiveState state; | |
92ab323c | 960 | Unit *following; |
87f0e418 LP |
961 | |
962 | assert(u); | |
963 | ||
6124958c LP |
964 | if (u->meta.load_state != UNIT_LOADED) |
965 | return -EINVAL; | |
966 | ||
87f0e418 LP |
967 | if (!unit_can_reload(u)) |
968 | return -EBADR; | |
969 | ||
970 | state = unit_active_state(u); | |
e364ad06 | 971 | if (state == UNIT_RELOADING) |
87f0e418 LP |
972 | return -EALREADY; |
973 | ||
e364ad06 | 974 | if (state != UNIT_ACTIVE) |
87f0e418 LP |
975 | return -ENOEXEC; |
976 | ||
92ab323c LP |
977 | if ((following = unit_following(u))) { |
978 | log_debug("Redirecting reload request from %s to %s.", u->meta.id, following->meta.id); | |
979 | return unit_reload(following); | |
980 | } | |
981 | ||
c1e1601e | 982 | unit_add_to_dbus_queue(u); |
87f0e418 LP |
983 | return UNIT_VTABLE(u)->reload(u); |
984 | } | |
985 | ||
986 | bool unit_can_reload(Unit *u) { | |
987 | assert(u); | |
988 | ||
989 | if (!UNIT_VTABLE(u)->reload) | |
990 | return false; | |
991 | ||
992 | if (!UNIT_VTABLE(u)->can_reload) | |
993 | return true; | |
994 | ||
995 | return UNIT_VTABLE(u)->can_reload(u); | |
996 | } | |
997 | ||
b4a16b7b | 998 | static void unit_check_unneeded(Unit *u) { |
f3bff0eb LP |
999 | Iterator i; |
1000 | Unit *other; | |
1001 | ||
1002 | assert(u); | |
1003 | ||
1004 | /* If this service shall be shut down when unneeded then do | |
1005 | * so. */ | |
1006 | ||
1007 | if (!u->meta.stop_when_unneeded) | |
1008 | return; | |
1009 | ||
1010 | if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) | |
1011 | return; | |
1012 | ||
1013 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRED_BY], i) | |
1014 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) | |
1015 | return; | |
1016 | ||
9e2f7c11 | 1017 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRED_BY_OVERRIDABLE], i) |
f3bff0eb LP |
1018 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
1019 | return; | |
1020 | ||
1021 | SET_FOREACH(other, u->meta.dependencies[UNIT_WANTED_BY], i) | |
1022 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) | |
1023 | return; | |
1024 | ||
b81884e7 LP |
1025 | SET_FOREACH(other, u->meta.dependencies[UNIT_BOUND_BY], i) |
1026 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) | |
1027 | return; | |
1028 | ||
54165a39 | 1029 | log_info("Service %s is not needed anymore. Stopping.", u->meta.id); |
f3bff0eb LP |
1030 | |
1031 | /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */ | |
398ef8ba | 1032 | manager_add_job(u->meta.manager, JOB_STOP, u, JOB_FAIL, true, NULL, NULL); |
f3bff0eb LP |
1033 | } |
1034 | ||
87f0e418 LP |
1035 | static void retroactively_start_dependencies(Unit *u) { |
1036 | Iterator i; | |
1037 | Unit *other; | |
1038 | ||
1039 | assert(u); | |
1040 | assert(UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))); | |
1041 | ||
1042 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRES], i) | |
b81884e7 LP |
1043 | if (!set_get(u->meta.dependencies[UNIT_AFTER], other) && |
1044 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) | |
1045 | manager_add_job(u->meta.manager, JOB_START, other, JOB_REPLACE, true, NULL, NULL); | |
1046 | ||
1047 | SET_FOREACH(other, u->meta.dependencies[UNIT_BIND_TO], i) | |
1048 | if (!set_get(u->meta.dependencies[UNIT_AFTER], other) && | |
1049 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) | |
398ef8ba | 1050 | manager_add_job(u->meta.manager, JOB_START, other, JOB_REPLACE, true, NULL, NULL); |
87f0e418 | 1051 | |
9e2f7c11 | 1052 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRES_OVERRIDABLE], i) |
b81884e7 LP |
1053 | if (!set_get(u->meta.dependencies[UNIT_AFTER], other) && |
1054 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) | |
398ef8ba | 1055 | manager_add_job(u->meta.manager, JOB_START, other, JOB_FAIL, false, NULL, NULL); |
87f0e418 LP |
1056 | |
1057 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUISITE], i) | |
b81884e7 LP |
1058 | if (!set_get(u->meta.dependencies[UNIT_AFTER], other) && |
1059 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) | |
398ef8ba | 1060 | manager_add_job(u->meta.manager, JOB_START, other, JOB_REPLACE, true, NULL, NULL); |
87f0e418 LP |
1061 | |
1062 | SET_FOREACH(other, u->meta.dependencies[UNIT_WANTS], i) | |
b81884e7 LP |
1063 | if (!set_get(u->meta.dependencies[UNIT_AFTER], other) && |
1064 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) | |
398ef8ba | 1065 | manager_add_job(u->meta.manager, JOB_START, other, JOB_FAIL, false, NULL, NULL); |
87f0e418 LP |
1066 | |
1067 | SET_FOREACH(other, u->meta.dependencies[UNIT_CONFLICTS], i) | |
b81884e7 | 1068 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
398ef8ba | 1069 | manager_add_job(u->meta.manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL); |
69dd2852 LP |
1070 | |
1071 | SET_FOREACH(other, u->meta.dependencies[UNIT_CONFLICTED_BY], i) | |
b81884e7 | 1072 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
69dd2852 | 1073 | manager_add_job(u->meta.manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL); |
87f0e418 LP |
1074 | } |
1075 | ||
1076 | static void retroactively_stop_dependencies(Unit *u) { | |
1077 | Iterator i; | |
1078 | Unit *other; | |
1079 | ||
1080 | assert(u); | |
1081 | assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))); | |
1082 | ||
b81884e7 LP |
1083 | /* Pull down units which are bound to us recursively if enabled */ |
1084 | SET_FOREACH(other, u->meta.dependencies[UNIT_BOUND_BY], i) | |
1085 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) | |
f14e15f8 | 1086 | manager_add_job(u->meta.manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL); |
f3bff0eb LP |
1087 | |
1088 | /* Garbage collect services that might not be needed anymore, if enabled */ | |
1089 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRES], i) | |
87f0e418 | 1090 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1091 | unit_check_unneeded(other); |
9e2f7c11 | 1092 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRES_OVERRIDABLE], i) |
f3bff0eb | 1093 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1094 | unit_check_unneeded(other); |
f3bff0eb LP |
1095 | SET_FOREACH(other, u->meta.dependencies[UNIT_WANTS], i) |
1096 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) | |
b4a16b7b | 1097 | unit_check_unneeded(other); |
f3bff0eb LP |
1098 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUISITE], i) |
1099 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) | |
b4a16b7b | 1100 | unit_check_unneeded(other); |
9e2f7c11 | 1101 | SET_FOREACH(other, u->meta.dependencies[UNIT_REQUISITE_OVERRIDABLE], i) |
f3bff0eb | 1102 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1103 | unit_check_unneeded(other); |
b81884e7 LP |
1104 | SET_FOREACH(other, u->meta.dependencies[UNIT_BIND_TO], i) |
1105 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) | |
1106 | unit_check_unneeded(other); | |
87f0e418 LP |
1107 | } |
1108 | ||
c0daa706 LP |
1109 | void unit_trigger_on_failure(Unit *u) { |
1110 | Unit *other; | |
1111 | Iterator i; | |
1112 | ||
1113 | assert(u); | |
1114 | ||
222ae6a8 LP |
1115 | if (set_size(u->meta.dependencies[UNIT_ON_FAILURE]) <= 0) |
1116 | return; | |
1117 | ||
1118 | log_info("Triggering OnFailure= dependencies of %s.", u->meta.id); | |
1119 | ||
1120 | SET_FOREACH(other, u->meta.dependencies[UNIT_ON_FAILURE], i) { | |
1121 | int r; | |
1122 | ||
1123 | if ((r = manager_add_job(u->meta.manager, JOB_START, other, u->meta.on_failure_isolate ? JOB_ISOLATE : JOB_REPLACE, true, NULL, NULL)) < 0) | |
1124 | log_error("Failed to enqueue OnFailure= job: %s", strerror(-r)); | |
1125 | } | |
c0daa706 LP |
1126 | } |
1127 | ||
e2f3b44c | 1128 | void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_success) { |
7e6e7b06 | 1129 | bool unexpected; |
a096ed36 | 1130 | |
87f0e418 LP |
1131 | assert(u); |
1132 | assert(os < _UNIT_ACTIVE_STATE_MAX); | |
1133 | assert(ns < _UNIT_ACTIVE_STATE_MAX); | |
87f0e418 | 1134 | |
8e471ccd LP |
1135 | /* Note that this is called for all low-level state changes, |
1136 | * even if they might map to the same high-level | |
1137 | * UnitActiveState! That means that ns == os is OK an expected | |
1138 | * behaviour here. For example: if a mount point is remounted | |
cd6d0a45 | 1139 | * this function will be called too! */ |
87f0e418 | 1140 | |
a7556052 | 1141 | if (u->meta.manager->n_reloading <= 0) { |
bdbf9951 | 1142 | dual_timestamp ts; |
173e3821 | 1143 | |
bdbf9951 | 1144 | dual_timestamp_get(&ts); |
173e3821 | 1145 | |
bdbf9951 LP |
1146 | if (UNIT_IS_INACTIVE_OR_FAILED(os) && !UNIT_IS_INACTIVE_OR_FAILED(ns)) |
1147 | u->meta.inactive_exit_timestamp = ts; | |
1148 | else if (!UNIT_IS_INACTIVE_OR_FAILED(os) && UNIT_IS_INACTIVE_OR_FAILED(ns)) | |
1149 | u->meta.inactive_enter_timestamp = ts; | |
1150 | ||
1151 | if (!UNIT_IS_ACTIVE_OR_RELOADING(os) && UNIT_IS_ACTIVE_OR_RELOADING(ns)) | |
1152 | u->meta.active_enter_timestamp = ts; | |
1153 | else if (UNIT_IS_ACTIVE_OR_RELOADING(os) && !UNIT_IS_ACTIVE_OR_RELOADING(ns)) | |
1154 | u->meta.active_exit_timestamp = ts; | |
1155 | ||
1156 | timer_unit_notify(u, ns); | |
1157 | path_unit_notify(u, ns); | |
1158 | } | |
87f0e418 | 1159 | |
fdf20a31 | 1160 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
fb385181 LP |
1161 | cgroup_bonding_trim_list(u->meta.cgroup_bondings, true); |
1162 | ||
87f0e418 | 1163 | if (u->meta.job) { |
7e6e7b06 | 1164 | unexpected = false; |
87f0e418 LP |
1165 | |
1166 | if (u->meta.job->state == JOB_WAITING) | |
1167 | ||
1168 | /* So we reached a different state for this | |
1169 | * job. Let's see if we can run it now if it | |
1170 | * failed previously due to EAGAIN. */ | |
c1e1601e | 1171 | job_add_to_run_queue(u->meta.job); |
87f0e418 | 1172 | |
b410e6b9 | 1173 | /* Let's check whether this state change constitutes a |
35b8ca3a | 1174 | * finished job, or maybe contradicts a running job and |
b410e6b9 | 1175 | * hence needs to invalidate jobs. */ |
87f0e418 | 1176 | |
b410e6b9 | 1177 | switch (u->meta.job->type) { |
87f0e418 | 1178 | |
b410e6b9 LP |
1179 | case JOB_START: |
1180 | case JOB_VERIFY_ACTIVE: | |
87f0e418 | 1181 | |
b410e6b9 | 1182 | if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) |
5d44db4a | 1183 | job_finish_and_invalidate(u->meta.job, JOB_DONE); |
b410e6b9 LP |
1184 | else if (u->meta.job->state == JOB_RUNNING && ns != UNIT_ACTIVATING) { |
1185 | unexpected = true; | |
41b02ec7 | 1186 | |
fdf20a31 | 1187 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
5d44db4a | 1188 | job_finish_and_invalidate(u->meta.job, ns == UNIT_FAILED ? JOB_FAILED : JOB_DONE); |
b410e6b9 | 1189 | } |
87f0e418 | 1190 | |
b410e6b9 | 1191 | break; |
87f0e418 | 1192 | |
b410e6b9 LP |
1193 | case JOB_RELOAD: |
1194 | case JOB_RELOAD_OR_START: | |
87f0e418 | 1195 | |
b410e6b9 | 1196 | if (u->meta.job->state == JOB_RUNNING) { |
a096ed36 | 1197 | if (ns == UNIT_ACTIVE) |
5d44db4a | 1198 | job_finish_and_invalidate(u->meta.job, reload_success ? JOB_DONE : JOB_FAILED); |
032ff4af | 1199 | else if (ns != UNIT_ACTIVATING && ns != UNIT_RELOADING) { |
a096ed36 | 1200 | unexpected = true; |
41b02ec7 | 1201 | |
fdf20a31 | 1202 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
5d44db4a | 1203 | job_finish_and_invalidate(u->meta.job, ns == UNIT_FAILED ? JOB_FAILED : JOB_DONE); |
a096ed36 | 1204 | } |
b410e6b9 | 1205 | } |
87f0e418 | 1206 | |
b410e6b9 | 1207 | break; |
87f0e418 | 1208 | |
b410e6b9 LP |
1209 | case JOB_STOP: |
1210 | case JOB_RESTART: | |
1211 | case JOB_TRY_RESTART: | |
87f0e418 | 1212 | |
fdf20a31 | 1213 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
5d44db4a | 1214 | job_finish_and_invalidate(u->meta.job, JOB_DONE); |
b410e6b9 LP |
1215 | else if (u->meta.job->state == JOB_RUNNING && ns != UNIT_DEACTIVATING) { |
1216 | unexpected = true; | |
5d44db4a | 1217 | job_finish_and_invalidate(u->meta.job, JOB_FAILED); |
b410e6b9 | 1218 | } |
87f0e418 | 1219 | |
b410e6b9 | 1220 | break; |
87f0e418 | 1221 | |
b410e6b9 LP |
1222 | default: |
1223 | assert_not_reached("Job type unknown"); | |
87f0e418 | 1224 | } |
87f0e418 | 1225 | |
7e6e7b06 LP |
1226 | } else |
1227 | unexpected = true; | |
1228 | ||
a7556052 | 1229 | if (u->meta.manager->n_reloading <= 0) { |
f3bff0eb | 1230 | |
bdbf9951 LP |
1231 | /* If this state change happened without being |
1232 | * requested by a job, then let's retroactively start | |
1233 | * or stop dependencies. We skip that step when | |
1234 | * deserializing, since we don't want to create any | |
1235 | * additional jobs just because something is already | |
1236 | * activated. */ | |
1237 | ||
1238 | if (unexpected) { | |
1239 | if (UNIT_IS_INACTIVE_OR_FAILED(os) && UNIT_IS_ACTIVE_OR_ACTIVATING(ns)) | |
1240 | retroactively_start_dependencies(u); | |
1241 | else if (UNIT_IS_ACTIVE_OR_ACTIVATING(os) && UNIT_IS_INACTIVE_OR_DEACTIVATING(ns)) | |
1242 | retroactively_stop_dependencies(u); | |
1243 | } | |
5de9682c | 1244 | |
bdbf9951 LP |
1245 | if (ns != os && ns == UNIT_FAILED) { |
1246 | log_notice("Unit %s entered failed state.", u->meta.id); | |
1247 | unit_trigger_on_failure(u); | |
cd6d0a45 | 1248 | } |
3b2775c5 | 1249 | } |
e537352b | 1250 | |
3b2775c5 LP |
1251 | /* Some names are special */ |
1252 | if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) { | |
1253 | ||
1254 | if (unit_has_name(u, SPECIAL_DBUS_SERVICE)) | |
1255 | /* The bus just might have become available, | |
1256 | * hence try to connect to it, if we aren't | |
1257 | * yet connected. */ | |
1258 | bus_init(u->meta.manager, true); | |
1259 | ||
1260 | if (u->meta.type == UNIT_SERVICE && | |
1261 | !UNIT_IS_ACTIVE_OR_RELOADING(os) && | |
a7556052 | 1262 | u->meta.manager->n_reloading <= 0) { |
3b2775c5 LP |
1263 | /* Write audit record if we have just finished starting up */ |
1264 | manager_send_unit_audit(u->meta.manager, u, AUDIT_SERVICE_START, true); | |
1265 | u->meta.in_audit = true; | |
1266 | } | |
e983b760 | 1267 | |
3b2775c5 LP |
1268 | if (!UNIT_IS_ACTIVE_OR_RELOADING(os)) |
1269 | manager_send_unit_plymouth(u->meta.manager, u); | |
bdbf9951 | 1270 | |
3b2775c5 | 1271 | } else { |
bdbf9951 | 1272 | |
3b2775c5 LP |
1273 | /* We don't care about D-Bus here, since we'll get an |
1274 | * asynchronous notification for it anyway. */ | |
cd6d0a45 | 1275 | |
3b2775c5 LP |
1276 | if (u->meta.type == UNIT_SERVICE && |
1277 | UNIT_IS_INACTIVE_OR_FAILED(ns) && | |
1278 | !UNIT_IS_INACTIVE_OR_FAILED(os) && | |
a7556052 | 1279 | u->meta.manager->n_reloading <= 0) { |
4927fcae | 1280 | |
3b2775c5 LP |
1281 | /* Hmm, if there was no start record written |
1282 | * write it now, so that we always have a nice | |
1283 | * pair */ | |
1284 | if (!u->meta.in_audit) { | |
1285 | manager_send_unit_audit(u->meta.manager, u, AUDIT_SERVICE_START, ns == UNIT_INACTIVE); | |
cd6d0a45 | 1286 | |
3b2775c5 LP |
1287 | if (ns == UNIT_INACTIVE) |
1288 | manager_send_unit_audit(u->meta.manager, u, AUDIT_SERVICE_STOP, true); | |
1289 | } else | |
1290 | /* Write audit record if we have just finished shutting down */ | |
1291 | manager_send_unit_audit(u->meta.manager, u, AUDIT_SERVICE_STOP, ns == UNIT_INACTIVE); | |
bdbf9951 | 1292 | |
3b2775c5 | 1293 | u->meta.in_audit = false; |
cd6d0a45 | 1294 | } |
f278026d LP |
1295 | } |
1296 | ||
3b2775c5 LP |
1297 | manager_recheck_syslog(u->meta.manager); |
1298 | ||
f3bff0eb LP |
1299 | /* Maybe we finished startup and are now ready for being |
1300 | * stopped because unneeded? */ | |
b4a16b7b | 1301 | unit_check_unneeded(u); |
c1e1601e LP |
1302 | |
1303 | unit_add_to_dbus_queue(u); | |
701cc384 | 1304 | unit_add_to_gc_queue(u); |
87f0e418 LP |
1305 | } |
1306 | ||
acbb0225 | 1307 | int unit_watch_fd(Unit *u, int fd, uint32_t events, Watch *w) { |
87f0e418 LP |
1308 | struct epoll_event ev; |
1309 | ||
1310 | assert(u); | |
1311 | assert(fd >= 0); | |
acbb0225 | 1312 | assert(w); |
ea430986 | 1313 | assert(w->type == WATCH_INVALID || (w->type == WATCH_FD && w->fd == fd && w->data.unit == u)); |
87f0e418 LP |
1314 | |
1315 | zero(ev); | |
acbb0225 | 1316 | ev.data.ptr = w; |
87f0e418 LP |
1317 | ev.events = events; |
1318 | ||
acbb0225 LP |
1319 | if (epoll_ctl(u->meta.manager->epoll_fd, |
1320 | w->type == WATCH_INVALID ? EPOLL_CTL_ADD : EPOLL_CTL_MOD, | |
1321 | fd, | |
1322 | &ev) < 0) | |
1323 | return -errno; | |
87f0e418 | 1324 | |
acbb0225 LP |
1325 | w->fd = fd; |
1326 | w->type = WATCH_FD; | |
ea430986 | 1327 | w->data.unit = u; |
87f0e418 | 1328 | |
acbb0225 | 1329 | return 0; |
87f0e418 LP |
1330 | } |
1331 | ||
acbb0225 | 1332 | void unit_unwatch_fd(Unit *u, Watch *w) { |
87f0e418 | 1333 | assert(u); |
acbb0225 | 1334 | assert(w); |
87f0e418 | 1335 | |
acbb0225 LP |
1336 | if (w->type == WATCH_INVALID) |
1337 | return; | |
1338 | ||
ea430986 LP |
1339 | assert(w->type == WATCH_FD); |
1340 | assert(w->data.unit == u); | |
acbb0225 LP |
1341 | assert_se(epoll_ctl(u->meta.manager->epoll_fd, EPOLL_CTL_DEL, w->fd, NULL) >= 0); |
1342 | ||
1343 | w->fd = -1; | |
1344 | w->type = WATCH_INVALID; | |
ea430986 | 1345 | w->data.unit = NULL; |
87f0e418 LP |
1346 | } |
1347 | ||
1348 | int unit_watch_pid(Unit *u, pid_t pid) { | |
1349 | assert(u); | |
1350 | assert(pid >= 1); | |
1351 | ||
05e343b7 LP |
1352 | /* Watch a specific PID. We only support one unit watching |
1353 | * each PID for now. */ | |
1354 | ||
c6c18be3 | 1355 | return hashmap_put(u->meta.manager->watch_pids, LONG_TO_PTR(pid), u); |
87f0e418 LP |
1356 | } |
1357 | ||
1358 | void unit_unwatch_pid(Unit *u, pid_t pid) { | |
1359 | assert(u); | |
1360 | assert(pid >= 1); | |
1361 | ||
c6c18be3 | 1362 | hashmap_remove_value(u->meta.manager->watch_pids, LONG_TO_PTR(pid), u); |
87f0e418 LP |
1363 | } |
1364 | ||
acbb0225 | 1365 | int unit_watch_timer(Unit *u, usec_t delay, Watch *w) { |
87f0e418 | 1366 | struct itimerspec its; |
acbb0225 | 1367 | int flags, fd; |
87f0e418 LP |
1368 | bool ours; |
1369 | ||
1370 | assert(u); | |
acbb0225 | 1371 | assert(w); |
faf919f1 | 1372 | assert(w->type == WATCH_INVALID || (w->type == WATCH_UNIT_TIMER && w->data.unit == u)); |
87f0e418 LP |
1373 | |
1374 | /* This will try to reuse the old timer if there is one */ | |
1375 | ||
faf919f1 LP |
1376 | if (w->type == WATCH_UNIT_TIMER) { |
1377 | assert(w->data.unit == u); | |
1378 | assert(w->fd >= 0); | |
1379 | ||
87f0e418 | 1380 | ours = false; |
acbb0225 | 1381 | fd = w->fd; |
faf919f1 LP |
1382 | } else if (w->type == WATCH_INVALID) { |
1383 | ||
87f0e418 | 1384 | ours = true; |
87f0e418 LP |
1385 | if ((fd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK|TFD_CLOEXEC)) < 0) |
1386 | return -errno; | |
faf919f1 LP |
1387 | } else |
1388 | assert_not_reached("Invalid watch type"); | |
87f0e418 LP |
1389 | |
1390 | zero(its); | |
1391 | ||
1392 | if (delay <= 0) { | |
1393 | /* Set absolute time in the past, but not 0, since we | |
1394 | * don't want to disarm the timer */ | |
1395 | its.it_value.tv_sec = 0; | |
1396 | its.it_value.tv_nsec = 1; | |
1397 | ||
1398 | flags = TFD_TIMER_ABSTIME; | |
1399 | } else { | |
1400 | timespec_store(&its.it_value, delay); | |
1401 | flags = 0; | |
1402 | } | |
1403 | ||
1404 | /* This will also flush the elapse counter */ | |
1405 | if (timerfd_settime(fd, flags, &its, NULL) < 0) | |
1406 | goto fail; | |
1407 | ||
acbb0225 LP |
1408 | if (w->type == WATCH_INVALID) { |
1409 | struct epoll_event ev; | |
87f0e418 | 1410 | |
acbb0225 LP |
1411 | zero(ev); |
1412 | ev.data.ptr = w; | |
f94ea366 | 1413 | ev.events = EPOLLIN; |
acbb0225 LP |
1414 | |
1415 | if (epoll_ctl(u->meta.manager->epoll_fd, EPOLL_CTL_ADD, fd, &ev) < 0) | |
1416 | goto fail; | |
1417 | } | |
1418 | ||
faf919f1 | 1419 | w->type = WATCH_UNIT_TIMER; |
acbb0225 | 1420 | w->fd = fd; |
ea430986 | 1421 | w->data.unit = u; |
87f0e418 | 1422 | |
87f0e418 LP |
1423 | return 0; |
1424 | ||
1425 | fail: | |
1426 | if (ours) | |
ea430986 | 1427 | close_nointr_nofail(fd); |
87f0e418 LP |
1428 | |
1429 | return -errno; | |
1430 | } | |
1431 | ||
acbb0225 | 1432 | void unit_unwatch_timer(Unit *u, Watch *w) { |
87f0e418 | 1433 | assert(u); |
acbb0225 | 1434 | assert(w); |
87f0e418 | 1435 | |
acbb0225 | 1436 | if (w->type == WATCH_INVALID) |
87f0e418 LP |
1437 | return; |
1438 | ||
faf919f1 LP |
1439 | assert(w->type == WATCH_UNIT_TIMER); |
1440 | assert(w->data.unit == u); | |
1441 | assert(w->fd >= 0); | |
acbb0225 LP |
1442 | |
1443 | assert_se(epoll_ctl(u->meta.manager->epoll_fd, EPOLL_CTL_DEL, w->fd, NULL) >= 0); | |
a16e1123 | 1444 | close_nointr_nofail(w->fd); |
acbb0225 LP |
1445 | |
1446 | w->fd = -1; | |
1447 | w->type = WATCH_INVALID; | |
ea430986 | 1448 | w->data.unit = NULL; |
87f0e418 LP |
1449 | } |
1450 | ||
1451 | bool unit_job_is_applicable(Unit *u, JobType j) { | |
1452 | assert(u); | |
1453 | assert(j >= 0 && j < _JOB_TYPE_MAX); | |
1454 | ||
1455 | switch (j) { | |
1456 | ||
1457 | case JOB_VERIFY_ACTIVE: | |
1458 | case JOB_START: | |
57339f47 | 1459 | case JOB_STOP: |
87f0e418 LP |
1460 | return true; |
1461 | ||
87f0e418 LP |
1462 | case JOB_RESTART: |
1463 | case JOB_TRY_RESTART: | |
1464 | return unit_can_start(u); | |
1465 | ||
1466 | case JOB_RELOAD: | |
1467 | return unit_can_reload(u); | |
1468 | ||
1469 | case JOB_RELOAD_OR_START: | |
1470 | return unit_can_reload(u) && unit_can_start(u); | |
1471 | ||
1472 | default: | |
1473 | assert_not_reached("Invalid job type"); | |
1474 | } | |
1475 | } | |
1476 | ||
701cc384 | 1477 | int unit_add_dependency(Unit *u, UnitDependency d, Unit *other, bool add_reference) { |
87f0e418 LP |
1478 | |
1479 | static const UnitDependency inverse_table[_UNIT_DEPENDENCY_MAX] = { | |
1480 | [UNIT_REQUIRES] = UNIT_REQUIRED_BY, | |
9e2f7c11 | 1481 | [UNIT_REQUIRES_OVERRIDABLE] = UNIT_REQUIRED_BY_OVERRIDABLE, |
87f0e418 LP |
1482 | [UNIT_WANTS] = UNIT_WANTED_BY, |
1483 | [UNIT_REQUISITE] = UNIT_REQUIRED_BY, | |
9e2f7c11 | 1484 | [UNIT_REQUISITE_OVERRIDABLE] = UNIT_REQUIRED_BY_OVERRIDABLE, |
b81884e7 | 1485 | [UNIT_BIND_TO] = UNIT_BOUND_BY, |
87f0e418 | 1486 | [UNIT_REQUIRED_BY] = _UNIT_DEPENDENCY_INVALID, |
9e2f7c11 | 1487 | [UNIT_REQUIRED_BY_OVERRIDABLE] = _UNIT_DEPENDENCY_INVALID, |
87f0e418 | 1488 | [UNIT_WANTED_BY] = _UNIT_DEPENDENCY_INVALID, |
b81884e7 | 1489 | [UNIT_BOUND_BY] = UNIT_BIND_TO, |
69dd2852 LP |
1490 | [UNIT_CONFLICTS] = UNIT_CONFLICTED_BY, |
1491 | [UNIT_CONFLICTED_BY] = UNIT_CONFLICTS, | |
87f0e418 | 1492 | [UNIT_BEFORE] = UNIT_AFTER, |
701cc384 | 1493 | [UNIT_AFTER] = UNIT_BEFORE, |
5de9682c | 1494 | [UNIT_ON_FAILURE] = _UNIT_DEPENDENCY_INVALID, |
701cc384 LP |
1495 | [UNIT_REFERENCES] = UNIT_REFERENCED_BY, |
1496 | [UNIT_REFERENCED_BY] = UNIT_REFERENCES | |
87f0e418 | 1497 | }; |
701cc384 | 1498 | int r, q = 0, v = 0, w = 0; |
87f0e418 LP |
1499 | |
1500 | assert(u); | |
1501 | assert(d >= 0 && d < _UNIT_DEPENDENCY_MAX); | |
87f0e418 LP |
1502 | assert(other); |
1503 | ||
9f151f29 LP |
1504 | u = unit_follow_merge(u); |
1505 | other = unit_follow_merge(other); | |
1506 | ||
87f0e418 LP |
1507 | /* We won't allow dependencies on ourselves. We will not |
1508 | * consider them an error however. */ | |
1509 | if (u == other) | |
1510 | return 0; | |
1511 | ||
5de9682c | 1512 | if ((r = set_ensure_allocated(&u->meta.dependencies[d], trivial_hash_func, trivial_compare_func)) < 0) |
87f0e418 LP |
1513 | return r; |
1514 | ||
5de9682c LP |
1515 | if (inverse_table[d] != _UNIT_DEPENDENCY_INVALID) |
1516 | if ((r = set_ensure_allocated(&other->meta.dependencies[inverse_table[d]], trivial_hash_func, trivial_compare_func)) < 0) | |
1517 | return r; | |
1518 | ||
701cc384 LP |
1519 | if (add_reference) |
1520 | if ((r = set_ensure_allocated(&u->meta.dependencies[UNIT_REFERENCES], trivial_hash_func, trivial_compare_func)) < 0 || | |
1521 | (r = set_ensure_allocated(&other->meta.dependencies[UNIT_REFERENCED_BY], trivial_hash_func, trivial_compare_func)) < 0) | |
1522 | return r; | |
87f0e418 | 1523 | |
701cc384 LP |
1524 | if ((q = set_put(u->meta.dependencies[d], other)) < 0) |
1525 | return q; | |
87f0e418 | 1526 | |
5de9682c LP |
1527 | if (inverse_table[d] != _UNIT_DEPENDENCY_INVALID) |
1528 | if ((v = set_put(other->meta.dependencies[inverse_table[d]], u)) < 0) { | |
1529 | r = v; | |
1530 | goto fail; | |
1531 | } | |
701cc384 LP |
1532 | |
1533 | if (add_reference) { | |
1534 | if ((w = set_put(u->meta.dependencies[UNIT_REFERENCES], other)) < 0) { | |
1535 | r = w; | |
1536 | goto fail; | |
1537 | } | |
1538 | ||
1539 | if ((r = set_put(other->meta.dependencies[UNIT_REFERENCED_BY], u)) < 0) | |
1540 | goto fail; | |
87f0e418 LP |
1541 | } |
1542 | ||
c1e1601e | 1543 | unit_add_to_dbus_queue(u); |
87f0e418 | 1544 | return 0; |
701cc384 LP |
1545 | |
1546 | fail: | |
1547 | if (q > 0) | |
1548 | set_remove(u->meta.dependencies[d], other); | |
1549 | ||
1550 | if (v > 0) | |
1551 | set_remove(other->meta.dependencies[inverse_table[d]], u); | |
1552 | ||
1553 | if (w > 0) | |
1554 | set_remove(u->meta.dependencies[UNIT_REFERENCES], other); | |
1555 | ||
1556 | return r; | |
87f0e418 | 1557 | } |
0301abf4 | 1558 | |
2c966c03 LP |
1559 | int unit_add_two_dependencies(Unit *u, UnitDependency d, UnitDependency e, Unit *other, bool add_reference) { |
1560 | int r; | |
1561 | ||
1562 | assert(u); | |
1563 | ||
1564 | if ((r = unit_add_dependency(u, d, other, add_reference)) < 0) | |
1565 | return r; | |
1566 | ||
1567 | if ((r = unit_add_dependency(u, e, other, add_reference)) < 0) | |
1568 | return r; | |
1569 | ||
1570 | return 0; | |
1571 | } | |
1572 | ||
9e2f7c11 LP |
1573 | static const char *resolve_template(Unit *u, const char *name, const char*path, char **p) { |
1574 | char *s; | |
1575 | ||
1576 | assert(u); | |
1577 | assert(name || path); | |
1578 | ||
1579 | if (!name) | |
1580 | name = file_name_from_path(path); | |
1581 | ||
1582 | if (!unit_name_is_template(name)) { | |
1583 | *p = NULL; | |
1584 | return name; | |
1585 | } | |
1586 | ||
1587 | if (u->meta.instance) | |
1588 | s = unit_name_replace_instance(name, u->meta.instance); | |
1589 | else { | |
1590 | char *i; | |
1591 | ||
1592 | if (!(i = unit_name_to_prefix(u->meta.id))) | |
1593 | return NULL; | |
1594 | ||
1595 | s = unit_name_replace_instance(name, i); | |
1596 | free(i); | |
1597 | } | |
1598 | ||
1599 | if (!s) | |
1600 | return NULL; | |
1601 | ||
1602 | *p = s; | |
1603 | return s; | |
1604 | } | |
1605 | ||
701cc384 | 1606 | int unit_add_dependency_by_name(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) { |
09b6b09f LP |
1607 | Unit *other; |
1608 | int r; | |
9e2f7c11 | 1609 | char *s; |
09b6b09f | 1610 | |
9e2f7c11 LP |
1611 | assert(u); |
1612 | assert(name || path); | |
09b6b09f | 1613 | |
9e2f7c11 LP |
1614 | if (!(name = resolve_template(u, name, path, &s))) |
1615 | return -ENOMEM; | |
09b6b09f | 1616 | |
398ef8ba | 1617 | if ((r = manager_load_unit(u->meta.manager, name, path, NULL, &other)) < 0) |
9e2f7c11 LP |
1618 | goto finish; |
1619 | ||
701cc384 | 1620 | r = unit_add_dependency(u, d, other, add_reference); |
9e2f7c11 LP |
1621 | |
1622 | finish: | |
1623 | free(s); | |
1624 | return r; | |
09b6b09f LP |
1625 | } |
1626 | ||
2c966c03 LP |
1627 | int unit_add_two_dependencies_by_name(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference) { |
1628 | Unit *other; | |
1629 | int r; | |
1630 | char *s; | |
1631 | ||
1632 | assert(u); | |
1633 | assert(name || path); | |
1634 | ||
1635 | if (!(name = resolve_template(u, name, path, &s))) | |
1636 | return -ENOMEM; | |
1637 | ||
398ef8ba | 1638 | if ((r = manager_load_unit(u->meta.manager, name, path, NULL, &other)) < 0) |
2c966c03 LP |
1639 | goto finish; |
1640 | ||
1641 | r = unit_add_two_dependencies(u, d, e, other, add_reference); | |
1642 | ||
1643 | finish: | |
1644 | free(s); | |
1645 | return r; | |
1646 | } | |
1647 | ||
701cc384 | 1648 | int unit_add_dependency_by_name_inverse(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) { |
bd77d0fc LP |
1649 | Unit *other; |
1650 | int r; | |
9e2f7c11 | 1651 | char *s; |
bd77d0fc | 1652 | |
9e2f7c11 LP |
1653 | assert(u); |
1654 | assert(name || path); | |
bd77d0fc | 1655 | |
9e2f7c11 LP |
1656 | if (!(name = resolve_template(u, name, path, &s))) |
1657 | return -ENOMEM; | |
bd77d0fc | 1658 | |
398ef8ba | 1659 | if ((r = manager_load_unit(u->meta.manager, name, path, NULL, &other)) < 0) |
9e2f7c11 LP |
1660 | goto finish; |
1661 | ||
701cc384 | 1662 | r = unit_add_dependency(other, d, u, add_reference); |
9e2f7c11 LP |
1663 | |
1664 | finish: | |
1665 | free(s); | |
1666 | return r; | |
bd77d0fc LP |
1667 | } |
1668 | ||
2c966c03 LP |
1669 | int unit_add_two_dependencies_by_name_inverse(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference) { |
1670 | Unit *other; | |
1671 | int r; | |
1672 | char *s; | |
1673 | ||
1674 | assert(u); | |
1675 | assert(name || path); | |
1676 | ||
1677 | if (!(name = resolve_template(u, name, path, &s))) | |
1678 | return -ENOMEM; | |
1679 | ||
398ef8ba | 1680 | if ((r = manager_load_unit(u->meta.manager, name, path, NULL, &other)) < 0) |
2c966c03 LP |
1681 | goto finish; |
1682 | ||
1683 | if ((r = unit_add_two_dependencies(other, d, e, u, add_reference)) < 0) | |
1684 | goto finish; | |
1685 | ||
1686 | finish: | |
1687 | free(s); | |
1688 | return r; | |
1689 | } | |
1690 | ||
0301abf4 LP |
1691 | int set_unit_path(const char *p) { |
1692 | char *cwd, *c; | |
1693 | int r; | |
1694 | ||
1695 | /* This is mostly for debug purposes */ | |
1696 | ||
1697 | if (path_is_absolute(p)) { | |
1698 | if (!(c = strdup(p))) | |
1699 | return -ENOMEM; | |
1700 | } else { | |
1701 | if (!(cwd = get_current_dir_name())) | |
1702 | return -errno; | |
1703 | ||
1704 | r = asprintf(&c, "%s/%s", cwd, p); | |
1705 | free(cwd); | |
1706 | ||
1707 | if (r < 0) | |
1708 | return -ENOMEM; | |
1709 | } | |
1710 | ||
036643a2 | 1711 | if (setenv("SYSTEMD_UNIT_PATH", c, 0) < 0) { |
0301abf4 LP |
1712 | r = -errno; |
1713 | free(c); | |
1714 | return r; | |
1715 | } | |
1716 | ||
1717 | return 0; | |
1718 | } | |
88066b3a | 1719 | |
ea430986 LP |
1720 | char *unit_dbus_path(Unit *u) { |
1721 | char *p, *e; | |
1722 | ||
1723 | assert(u); | |
1724 | ||
04ade7d2 LP |
1725 | if (!u->meta.id) |
1726 | return NULL; | |
1727 | ||
9e2f7c11 | 1728 | if (!(e = bus_path_escape(u->meta.id))) |
ea430986 LP |
1729 | return NULL; |
1730 | ||
35d2e7ec | 1731 | p = strappend("/org/freedesktop/systemd1/unit/", e); |
ea430986 | 1732 | free(e); |
35d2e7ec | 1733 | |
ea430986 LP |
1734 | return p; |
1735 | } | |
1736 | ||
8e274523 | 1737 | int unit_add_cgroup(Unit *u, CGroupBonding *b) { |
8e274523 LP |
1738 | int r; |
1739 | ||
1740 | assert(u); | |
1741 | assert(b); | |
35d2e7ec | 1742 | |
8e274523 LP |
1743 | assert(b->path); |
1744 | ||
e025b4c3 | 1745 | if (!b->controller) { |
35d2e7ec LP |
1746 | if (!(b->controller = strdup(SYSTEMD_CGROUP_CONTROLLER))) |
1747 | return -ENOMEM; | |
1748 | ||
e025b4c3 LP |
1749 | b->ours = true; |
1750 | } | |
1751 | ||
8e274523 LP |
1752 | /* Ensure this hasn't been added yet */ |
1753 | assert(!b->unit); | |
1754 | ||
d686d8a9 LP |
1755 | if (streq(b->controller, SYSTEMD_CGROUP_CONTROLLER)) { |
1756 | CGroupBonding *l; | |
8e274523 | 1757 | |
d686d8a9 LP |
1758 | l = hashmap_get(u->meta.manager->cgroup_bondings, b->path); |
1759 | LIST_PREPEND(CGroupBonding, by_path, l, b); | |
1760 | ||
1761 | if ((r = hashmap_replace(u->meta.manager->cgroup_bondings, b->path, l)) < 0) { | |
1762 | LIST_REMOVE(CGroupBonding, by_path, l, b); | |
1763 | return r; | |
1764 | } | |
8e274523 LP |
1765 | } |
1766 | ||
1767 | LIST_PREPEND(CGroupBonding, by_unit, u->meta.cgroup_bondings, b); | |
1768 | b->unit = u; | |
1769 | ||
1770 | return 0; | |
1771 | } | |
1772 | ||
013b87c0 LP |
1773 | static char *default_cgroup_path(Unit *u) { |
1774 | char *p; | |
1775 | ||
1776 | assert(u); | |
1777 | ||
4f2d528d LP |
1778 | if (u->meta.instance) { |
1779 | char *t; | |
013b87c0 | 1780 | |
cd0ed1db LP |
1781 | t = unit_name_template(u->meta.id); |
1782 | if (!t) | |
4f2d528d LP |
1783 | return NULL; |
1784 | ||
cd0ed1db | 1785 | p = join(u->meta.manager->cgroup_hierarchy, "/", t, "/", u->meta.instance, NULL); |
4f2d528d LP |
1786 | free(t); |
1787 | } else | |
cd0ed1db | 1788 | p = join(u->meta.manager->cgroup_hierarchy, "/", u->meta.id, NULL); |
4f2d528d | 1789 | |
cd0ed1db | 1790 | return p; |
013b87c0 LP |
1791 | } |
1792 | ||
8e274523 | 1793 | int unit_add_cgroup_from_text(Unit *u, const char *name) { |
013b87c0 LP |
1794 | char *controller = NULL, *path = NULL; |
1795 | CGroupBonding *b = NULL; | |
e025b4c3 | 1796 | bool ours = false; |
8e274523 LP |
1797 | int r; |
1798 | ||
1799 | assert(u); | |
1800 | assert(name); | |
1801 | ||
35d2e7ec LP |
1802 | if ((r = cg_split_spec(name, &controller, &path)) < 0) |
1803 | return r; | |
8e274523 | 1804 | |
e025b4c3 | 1805 | if (!path) { |
35d2e7ec | 1806 | path = default_cgroup_path(u); |
e025b4c3 LP |
1807 | ours = true; |
1808 | } | |
013b87c0 | 1809 | |
e025b4c3 | 1810 | if (!controller) { |
55096547 | 1811 | controller = strdup(SYSTEMD_CGROUP_CONTROLLER); |
e025b4c3 LP |
1812 | ours = true; |
1813 | } | |
013b87c0 | 1814 | |
35d2e7ec LP |
1815 | if (!path || !controller) { |
1816 | free(path); | |
1817 | free(controller); | |
1818 | ||
1819 | return -ENOMEM; | |
8e274523 LP |
1820 | } |
1821 | ||
013b87c0 LP |
1822 | if (cgroup_bonding_find_list(u->meta.cgroup_bondings, controller)) { |
1823 | r = -EEXIST; | |
1824 | goto fail; | |
1825 | } | |
8e274523 | 1826 | |
013b87c0 | 1827 | if (!(b = new0(CGroupBonding, 1))) { |
8e274523 LP |
1828 | r = -ENOMEM; |
1829 | goto fail; | |
1830 | } | |
1831 | ||
013b87c0 LP |
1832 | b->controller = controller; |
1833 | b->path = path; | |
e025b4c3 LP |
1834 | b->ours = ours; |
1835 | b->essential = streq(controller, SYSTEMD_CGROUP_CONTROLLER); | |
8e274523 LP |
1836 | |
1837 | if ((r = unit_add_cgroup(u, b)) < 0) | |
1838 | goto fail; | |
1839 | ||
1840 | return 0; | |
1841 | ||
1842 | fail: | |
013b87c0 LP |
1843 | free(path); |
1844 | free(controller); | |
8e274523 LP |
1845 | free(b); |
1846 | ||
1847 | return r; | |
1848 | } | |
1849 | ||
06d4c99a | 1850 | static int unit_add_one_default_cgroup(Unit *u, const char *controller) { |
d686d8a9 | 1851 | CGroupBonding *b = NULL; |
8e274523 LP |
1852 | int r = -ENOMEM; |
1853 | ||
1854 | assert(u); | |
1855 | ||
06d4c99a LP |
1856 | if (!controller) |
1857 | controller = SYSTEMD_CGROUP_CONTROLLER; | |
8e274523 | 1858 | |
06d4c99a LP |
1859 | if (cgroup_bonding_find_list(u->meta.cgroup_bondings, controller)) |
1860 | return 0; | |
8e274523 | 1861 | |
06d4c99a LP |
1862 | if (!(b = new0(CGroupBonding, 1))) |
1863 | return -ENOMEM; | |
8e274523 | 1864 | |
06d4c99a LP |
1865 | if (!(b->controller = strdup(controller))) |
1866 | goto fail; | |
d686d8a9 | 1867 | |
06d4c99a LP |
1868 | if (!(b->path = default_cgroup_path(u))) |
1869 | goto fail; | |
d686d8a9 | 1870 | |
06d4c99a LP |
1871 | b->ours = true; |
1872 | b->essential = streq(controller, SYSTEMD_CGROUP_CONTROLLER); | |
d686d8a9 | 1873 | |
06d4c99a LP |
1874 | if ((r = unit_add_cgroup(u, b)) < 0) |
1875 | goto fail; | |
8e274523 LP |
1876 | |
1877 | return 0; | |
1878 | ||
1879 | fail: | |
06d4c99a LP |
1880 | free(b->path); |
1881 | free(b->controller); | |
1882 | free(b); | |
8e274523 LP |
1883 | |
1884 | return r; | |
1885 | } | |
1886 | ||
06d4c99a LP |
1887 | int unit_add_default_cgroups(Unit *u) { |
1888 | char **c; | |
1889 | int r; | |
1890 | assert(u); | |
1891 | ||
1892 | /* Adds in the default cgroups, if they weren't specified | |
1893 | * otherwise. */ | |
1894 | ||
df18d8c8 LP |
1895 | if (!u->meta.manager->cgroup_hierarchy) |
1896 | return 0; | |
1897 | ||
06d4c99a LP |
1898 | if ((r = unit_add_one_default_cgroup(u, NULL)) < 0) |
1899 | return r; | |
1900 | ||
1901 | STRV_FOREACH(c, u->meta.manager->default_controllers) | |
1902 | if ((r = unit_add_one_default_cgroup(u, *c)) < 0) | |
1903 | return r; | |
1904 | ||
1905 | return 0; | |
1906 | } | |
1907 | ||
8e274523 LP |
1908 | CGroupBonding* unit_get_default_cgroup(Unit *u) { |
1909 | assert(u); | |
1910 | ||
55096547 | 1911 | return cgroup_bonding_find_list(u->meta.cgroup_bondings, SYSTEMD_CGROUP_CONTROLLER); |
8e274523 LP |
1912 | } |
1913 | ||
f6ff8c29 LP |
1914 | int unit_load_related_unit(Unit *u, const char *type, Unit **_found) { |
1915 | char *t; | |
1916 | int r; | |
1917 | ||
1918 | assert(u); | |
1919 | assert(type); | |
1920 | assert(_found); | |
1921 | ||
9e2f7c11 | 1922 | if (!(t = unit_name_change_suffix(u->meta.id, type))) |
f6ff8c29 LP |
1923 | return -ENOMEM; |
1924 | ||
1925 | assert(!unit_has_name(u, t)); | |
1926 | ||
398ef8ba | 1927 | r = manager_load_unit(u->meta.manager, t, NULL, NULL, _found); |
f6ff8c29 LP |
1928 | free(t); |
1929 | ||
9e2f7c11 | 1930 | assert(r < 0 || *_found != u); |
f6ff8c29 LP |
1931 | |
1932 | return r; | |
1933 | } | |
1934 | ||
a16e1123 LP |
1935 | int unit_get_related_unit(Unit *u, const char *type, Unit **_found) { |
1936 | Unit *found; | |
1937 | char *t; | |
1938 | ||
1939 | assert(u); | |
1940 | assert(type); | |
1941 | assert(_found); | |
1942 | ||
1943 | if (!(t = unit_name_change_suffix(u->meta.id, type))) | |
1944 | return -ENOMEM; | |
1945 | ||
1946 | assert(!unit_has_name(u, t)); | |
1947 | ||
1948 | found = manager_get_unit(u->meta.manager, t); | |
1949 | free(t); | |
1950 | ||
1951 | if (!found) | |
1952 | return -ENOENT; | |
1953 | ||
1954 | *_found = found; | |
1955 | return 0; | |
1956 | } | |
1957 | ||
9e2f7c11 LP |
1958 | static char *specifier_prefix_and_instance(char specifier, void *data, void *userdata) { |
1959 | Unit *u = userdata; | |
1960 | assert(u); | |
1961 | ||
1962 | return unit_name_to_prefix_and_instance(u->meta.id); | |
1963 | } | |
1964 | ||
1965 | static char *specifier_prefix(char specifier, void *data, void *userdata) { | |
1966 | Unit *u = userdata; | |
1967 | assert(u); | |
1968 | ||
1969 | return unit_name_to_prefix(u->meta.id); | |
1970 | } | |
1971 | ||
1972 | static char *specifier_prefix_unescaped(char specifier, void *data, void *userdata) { | |
1973 | Unit *u = userdata; | |
1974 | char *p, *r; | |
1975 | ||
1976 | assert(u); | |
1977 | ||
1978 | if (!(p = unit_name_to_prefix(u->meta.id))) | |
1979 | return NULL; | |
1980 | ||
1981 | r = unit_name_unescape(p); | |
1982 | free(p); | |
1983 | ||
1984 | return r; | |
1985 | } | |
1986 | ||
1987 | static char *specifier_instance_unescaped(char specifier, void *data, void *userdata) { | |
1988 | Unit *u = userdata; | |
1989 | assert(u); | |
1990 | ||
1991 | if (u->meta.instance) | |
1992 | return unit_name_unescape(u->meta.instance); | |
1993 | ||
1994 | return strdup(""); | |
1995 | } | |
1996 | ||
9fc50704 LP |
1997 | static char *specifier_filename(char specifier, void *data, void *userdata) { |
1998 | Unit *u = userdata; | |
1999 | assert(u); | |
2000 | ||
2001 | if (u->meta.instance) | |
2002 | return unit_name_path_unescape(u->meta.instance); | |
2003 | ||
2004 | return unit_name_to_path(u->meta.instance); | |
2005 | } | |
2006 | ||
0aef4345 LP |
2007 | static char *specifier_cgroup(char specifier, void *data, void *userdata) { |
2008 | Unit *u = userdata; | |
2009 | assert(u); | |
2010 | ||
2011 | return default_cgroup_path(u); | |
2012 | } | |
2013 | ||
2014 | static char *specifier_cgroup_root(char specifier, void *data, void *userdata) { | |
2015 | Unit *u = userdata; | |
2016 | char *p; | |
2017 | assert(u); | |
2018 | ||
2019 | if (specifier == 'r') | |
2020 | return strdup(u->meta.manager->cgroup_hierarchy); | |
2021 | ||
2022 | if (parent_of_path(u->meta.manager->cgroup_hierarchy, &p) < 0) | |
2023 | return strdup(""); | |
2024 | ||
2025 | if (streq(p, "/")) { | |
2026 | free(p); | |
2027 | return strdup(""); | |
2028 | } | |
2029 | ||
2030 | return p; | |
2031 | } | |
2032 | ||
2033 | static char *specifier_runtime(char specifier, void *data, void *userdata) { | |
2034 | Unit *u = userdata; | |
2035 | assert(u); | |
2036 | ||
2037 | if (u->meta.manager->running_as == MANAGER_USER) { | |
2038 | const char *e; | |
2039 | ||
2040 | e = getenv("XDG_RUNTIME_DIR"); | |
2041 | if (e) | |
2042 | return strdup(e); | |
2043 | } | |
2044 | ||
2045 | return strdup("/run"); | |
2046 | } | |
2047 | ||
9e2f7c11 LP |
2048 | char *unit_name_printf(Unit *u, const char* format) { |
2049 | ||
2050 | /* | |
2051 | * This will use the passed string as format string and | |
2052 | * replace the following specifiers: | |
2053 | * | |
2054 | * %n: the full id of the unit (foo@bar.waldo) | |
2055 | * %N: the id of the unit without the suffix (foo@bar) | |
2056 | * %p: the prefix (foo) | |
2057 | * %i: the instance (bar) | |
2058 | */ | |
2059 | ||
2060 | const Specifier table[] = { | |
2061 | { 'n', specifier_string, u->meta.id }, | |
2062 | { 'N', specifier_prefix_and_instance, NULL }, | |
2063 | { 'p', specifier_prefix, NULL }, | |
2064 | { 'i', specifier_string, u->meta.instance }, | |
2065 | { 0, NULL, NULL } | |
2066 | }; | |
2067 | ||
2068 | assert(u); | |
2069 | assert(format); | |
2070 | ||
2071 | return specifier_printf(format, table, u); | |
2072 | } | |
2073 | ||
2074 | char *unit_full_printf(Unit *u, const char *format) { | |
2075 | ||
2076 | /* This is similar to unit_name_printf() but also supports | |
0aef4345 LP |
2077 | * unescaping. Also, adds a couple of additional codes: |
2078 | * | |
2079 | * %c cgroup path of unit | |
2080 | * %r root cgroup path of this systemd instance (e.g. "/user/lennart/shared/systemd-4711") | |
2081 | * %R parent of root cgroup path (e.g. "/usr/lennart/shared") | |
2082 | * %t the runtime directory to place sockets in (e.g. "/run" or $XDG_RUNTIME_DIR) | |
2083 | */ | |
9e2f7c11 LP |
2084 | |
2085 | const Specifier table[] = { | |
2086 | { 'n', specifier_string, u->meta.id }, | |
2087 | { 'N', specifier_prefix_and_instance, NULL }, | |
2088 | { 'p', specifier_prefix, NULL }, | |
2089 | { 'P', specifier_prefix_unescaped, NULL }, | |
2090 | { 'i', specifier_string, u->meta.instance }, | |
2091 | { 'I', specifier_instance_unescaped, NULL }, | |
9fc50704 | 2092 | { 'f', specifier_filename, NULL }, |
0aef4345 LP |
2093 | { 'c', specifier_cgroup, NULL }, |
2094 | { 'r', specifier_cgroup_root, NULL }, | |
2095 | { 'R', specifier_cgroup_root, NULL }, | |
2096 | { 't', specifier_runtime, NULL }, | |
9e2f7c11 LP |
2097 | { 0, NULL, NULL } |
2098 | }; | |
2099 | ||
2100 | assert(u); | |
2101 | assert(format); | |
2102 | ||
2103 | return specifier_printf(format, table, u); | |
2104 | } | |
2105 | ||
2106 | char **unit_full_printf_strv(Unit *u, char **l) { | |
2107 | size_t n; | |
2108 | char **r, **i, **j; | |
2109 | ||
2110 | /* Applies unit_full_printf to every entry in l */ | |
2111 | ||
2112 | assert(u); | |
2113 | ||
2114 | n = strv_length(l); | |
2115 | if (!(r = new(char*, n+1))) | |
2116 | return NULL; | |
2117 | ||
2118 | for (i = l, j = r; *i; i++, j++) | |
2119 | if (!(*j = unit_full_printf(u, *i))) | |
2120 | goto fail; | |
2121 | ||
2122 | *j = NULL; | |
2123 | return r; | |
2124 | ||
2125 | fail: | |
da19d5c1 | 2126 | for (j--; j >= r; j--) |
9e2f7c11 LP |
2127 | free(*j); |
2128 | ||
2129 | free(r); | |
2130 | ||
2131 | return NULL; | |
2132 | } | |
2133 | ||
05e343b7 LP |
2134 | int unit_watch_bus_name(Unit *u, const char *name) { |
2135 | assert(u); | |
2136 | assert(name); | |
2137 | ||
2138 | /* Watch a specific name on the bus. We only support one unit | |
2139 | * watching each name for now. */ | |
2140 | ||
2141 | return hashmap_put(u->meta.manager->watch_bus, name, u); | |
2142 | } | |
2143 | ||
2144 | void unit_unwatch_bus_name(Unit *u, const char *name) { | |
2145 | assert(u); | |
2146 | assert(name); | |
2147 | ||
2148 | hashmap_remove_value(u->meta.manager->watch_bus, name, u); | |
2149 | } | |
2150 | ||
a16e1123 LP |
2151 | bool unit_can_serialize(Unit *u) { |
2152 | assert(u); | |
2153 | ||
2154 | return UNIT_VTABLE(u)->serialize && UNIT_VTABLE(u)->deserialize_item; | |
2155 | } | |
2156 | ||
2157 | int unit_serialize(Unit *u, FILE *f, FDSet *fds) { | |
2158 | int r; | |
2159 | ||
2160 | assert(u); | |
2161 | assert(f); | |
2162 | assert(fds); | |
2163 | ||
2164 | if (!unit_can_serialize(u)) | |
2165 | return 0; | |
2166 | ||
2167 | if ((r = UNIT_VTABLE(u)->serialize(u, f, fds)) < 0) | |
2168 | return r; | |
2169 | ||
cca098b0 LP |
2170 | if (u->meta.job) |
2171 | unit_serialize_item(u, f, "job", job_type_to_string(u->meta.job->type)); | |
2172 | ||
10717a1a LP |
2173 | dual_timestamp_serialize(f, "inactive-exit-timestamp", &u->meta.inactive_exit_timestamp); |
2174 | dual_timestamp_serialize(f, "active-enter-timestamp", &u->meta.active_enter_timestamp); | |
2175 | dual_timestamp_serialize(f, "active-exit-timestamp", &u->meta.active_exit_timestamp); | |
2176 | dual_timestamp_serialize(f, "inactive-enter-timestamp", &u->meta.inactive_enter_timestamp); | |
2791a8f8 LP |
2177 | dual_timestamp_serialize(f, "condition-timestamp", &u->meta.condition_timestamp); |
2178 | ||
2179 | if (dual_timestamp_is_set(&u->meta.condition_timestamp)) | |
2180 | unit_serialize_item(u, f, "condition-result", yes_no(u->meta.condition_result)); | |
10717a1a | 2181 | |
a16e1123 LP |
2182 | /* End marker */ |
2183 | fputc('\n', f); | |
2184 | return 0; | |
2185 | } | |
2186 | ||
2187 | void unit_serialize_item_format(Unit *u, FILE *f, const char *key, const char *format, ...) { | |
2188 | va_list ap; | |
2189 | ||
2190 | assert(u); | |
2191 | assert(f); | |
2192 | assert(key); | |
2193 | assert(format); | |
2194 | ||
2195 | fputs(key, f); | |
2196 | fputc('=', f); | |
2197 | ||
2198 | va_start(ap, format); | |
2199 | vfprintf(f, format, ap); | |
2200 | va_end(ap); | |
2201 | ||
2202 | fputc('\n', f); | |
2203 | } | |
2204 | ||
2205 | void unit_serialize_item(Unit *u, FILE *f, const char *key, const char *value) { | |
2206 | assert(u); | |
2207 | assert(f); | |
2208 | assert(key); | |
2209 | assert(value); | |
2210 | ||
2211 | fprintf(f, "%s=%s\n", key, value); | |
2212 | } | |
2213 | ||
2214 | int unit_deserialize(Unit *u, FILE *f, FDSet *fds) { | |
2215 | int r; | |
2216 | ||
2217 | assert(u); | |
2218 | assert(f); | |
2219 | assert(fds); | |
2220 | ||
2221 | if (!unit_can_serialize(u)) | |
2222 | return 0; | |
2223 | ||
2224 | for (;;) { | |
20c03b7b | 2225 | char line[LINE_MAX], *l, *v; |
a16e1123 LP |
2226 | size_t k; |
2227 | ||
2228 | if (!fgets(line, sizeof(line), f)) { | |
2229 | if (feof(f)) | |
2230 | return 0; | |
2231 | return -errno; | |
2232 | } | |
2233 | ||
10f8e83c | 2234 | char_array_0(line); |
a16e1123 LP |
2235 | l = strstrip(line); |
2236 | ||
2237 | /* End marker */ | |
2238 | if (l[0] == 0) | |
2239 | return 0; | |
2240 | ||
2241 | k = strcspn(l, "="); | |
2242 | ||
2243 | if (l[k] == '=') { | |
2244 | l[k] = 0; | |
2245 | v = l+k+1; | |
2246 | } else | |
2247 | v = l+k; | |
2248 | ||
cca098b0 LP |
2249 | if (streq(l, "job")) { |
2250 | JobType type; | |
2251 | ||
2252 | if ((type = job_type_from_string(v)) < 0) | |
2253 | log_debug("Failed to parse job type value %s", v); | |
2254 | else | |
2255 | u->meta.deserialized_job = type; | |
2256 | ||
2257 | continue; | |
8aaf019b | 2258 | } else if (streq(l, "inactive-exit-timestamp")) { |
799fd0fd | 2259 | dual_timestamp_deserialize(v, &u->meta.inactive_exit_timestamp); |
8aaf019b LP |
2260 | continue; |
2261 | } else if (streq(l, "active-enter-timestamp")) { | |
799fd0fd | 2262 | dual_timestamp_deserialize(v, &u->meta.active_enter_timestamp); |
8aaf019b LP |
2263 | continue; |
2264 | } else if (streq(l, "active-exit-timestamp")) { | |
799fd0fd | 2265 | dual_timestamp_deserialize(v, &u->meta.active_exit_timestamp); |
8aaf019b LP |
2266 | continue; |
2267 | } else if (streq(l, "inactive-enter-timestamp")) { | |
799fd0fd | 2268 | dual_timestamp_deserialize(v, &u->meta.inactive_enter_timestamp); |
8aaf019b | 2269 | continue; |
2791a8f8 LP |
2270 | } else if (streq(l, "condition-timestamp")) { |
2271 | dual_timestamp_deserialize(v, &u->meta.condition_timestamp); | |
2272 | continue; | |
2273 | } else if (streq(l, "condition-result")) { | |
2274 | int b; | |
2275 | ||
2276 | if ((b = parse_boolean(v)) < 0) | |
2277 | log_debug("Failed to parse condition result value %s", v); | |
2278 | else | |
2279 | u->meta.condition_result = b; | |
efbac6d2 LP |
2280 | |
2281 | continue; | |
8aaf019b | 2282 | } |
cca098b0 | 2283 | |
a16e1123 LP |
2284 | if ((r = UNIT_VTABLE(u)->deserialize_item(u, l, v, fds)) < 0) |
2285 | return r; | |
2286 | } | |
2287 | } | |
2288 | ||
6e2ef85b LP |
2289 | int unit_add_node_link(Unit *u, const char *what, bool wants) { |
2290 | Unit *device; | |
2291 | char *e; | |
2292 | int r; | |
2293 | ||
2294 | assert(u); | |
2295 | ||
2296 | if (!what) | |
2297 | return 0; | |
2298 | ||
2299 | /* Adds in links to the device node that this unit is based on */ | |
2300 | ||
8407a5d0 | 2301 | if (!is_device_path(what)) |
6e2ef85b LP |
2302 | return 0; |
2303 | ||
2304 | if (!(e = unit_name_build_escape(what+1, NULL, ".device"))) | |
2305 | return -ENOMEM; | |
2306 | ||
398ef8ba | 2307 | r = manager_load_unit(u->meta.manager, e, NULL, NULL, &device); |
6e2ef85b LP |
2308 | free(e); |
2309 | ||
2310 | if (r < 0) | |
2311 | return r; | |
2312 | ||
b81884e7 | 2313 | if ((r = unit_add_two_dependencies(u, UNIT_AFTER, UNIT_BIND_TO, device, true)) < 0) |
6e2ef85b LP |
2314 | return r; |
2315 | ||
2316 | if (wants) | |
2317 | if ((r = unit_add_dependency(device, UNIT_WANTS, u, false)) < 0) | |
2318 | return r; | |
2319 | ||
2320 | return 0; | |
2321 | } | |
a16e1123 | 2322 | |
cca098b0 LP |
2323 | int unit_coldplug(Unit *u) { |
2324 | int r; | |
2325 | ||
2326 | assert(u); | |
2327 | ||
2328 | if (UNIT_VTABLE(u)->coldplug) | |
2329 | if ((r = UNIT_VTABLE(u)->coldplug(u)) < 0) | |
2330 | return r; | |
2331 | ||
2332 | if (u->meta.deserialized_job >= 0) { | |
cebe0d41 | 2333 | if ((r = manager_add_job(u->meta.manager, u->meta.deserialized_job, u, JOB_IGNORE_REQUIREMENTS, false, NULL, NULL)) < 0) |
cca098b0 LP |
2334 | return r; |
2335 | ||
2336 | u->meta.deserialized_job = _JOB_TYPE_INVALID; | |
2337 | } | |
2338 | ||
2339 | return 0; | |
2340 | } | |
2341 | ||
9e58ff9c LP |
2342 | void unit_status_printf(Unit *u, const char *format, ...) { |
2343 | va_list ap; | |
2344 | ||
2345 | assert(u); | |
2346 | assert(format); | |
2347 | ||
2348 | if (!UNIT_VTABLE(u)->show_status) | |
2349 | return; | |
2350 | ||
2351 | if (u->meta.manager->running_as != MANAGER_SYSTEM) | |
2352 | return; | |
2353 | ||
6faa1114 LP |
2354 | /* If Plymouth is running make sure we show the status, so |
2355 | * that there's something nice to see when people press Esc */ | |
2356 | ||
2357 | if (!u->meta.manager->show_status && !plymouth_running()) | |
9e58ff9c LP |
2358 | return; |
2359 | ||
2360 | if (!manager_is_booting_or_shutting_down(u->meta.manager)) | |
2361 | return; | |
2362 | ||
2363 | va_start(ap, format); | |
2364 | status_vprintf(format, ap); | |
2365 | va_end(ap); | |
2366 | } | |
2367 | ||
45fb0699 | 2368 | bool unit_need_daemon_reload(Unit *u) { |
45fb0699 LP |
2369 | assert(u); |
2370 | ||
5f4b19f4 LP |
2371 | if (u->meta.fragment_path) { |
2372 | struct stat st; | |
45fb0699 | 2373 | |
5f4b19f4 LP |
2374 | zero(st); |
2375 | if (stat(u->meta.fragment_path, &st) < 0) | |
2376 | /* What, cannot access this anymore? */ | |
2377 | return true; | |
45fb0699 | 2378 | |
5f4b19f4 LP |
2379 | if (u->meta.fragment_mtime > 0 && |
2380 | timespec_load(&st.st_mtim) != u->meta.fragment_mtime) | |
2381 | return true; | |
2382 | } | |
2383 | ||
2384 | if (UNIT_VTABLE(u)->need_daemon_reload) | |
2385 | return UNIT_VTABLE(u)->need_daemon_reload(u); | |
2386 | ||
2387 | return false; | |
45fb0699 LP |
2388 | } |
2389 | ||
fdf20a31 | 2390 | void unit_reset_failed(Unit *u) { |
5632e374 LP |
2391 | assert(u); |
2392 | ||
fdf20a31 MM |
2393 | if (UNIT_VTABLE(u)->reset_failed) |
2394 | UNIT_VTABLE(u)->reset_failed(u); | |
5632e374 LP |
2395 | } |
2396 | ||
a7f241db LP |
2397 | Unit *unit_following(Unit *u) { |
2398 | assert(u); | |
2399 | ||
2400 | if (UNIT_VTABLE(u)->following) | |
2401 | return UNIT_VTABLE(u)->following(u); | |
2402 | ||
2403 | return NULL; | |
2404 | } | |
2405 | ||
18ffdfda LP |
2406 | bool unit_pending_inactive(Unit *u) { |
2407 | assert(u); | |
2408 | ||
2409 | /* Returns true if the unit is inactive or going down */ | |
2410 | ||
2411 | if (UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))) | |
2412 | return true; | |
2413 | ||
2414 | if (u->meta.job && u->meta.job->type == JOB_STOP) | |
2415 | return true; | |
2416 | ||
2417 | return false; | |
2418 | } | |
2419 | ||
f976f3f6 LP |
2420 | bool unit_pending_active(Unit *u) { |
2421 | assert(u); | |
2422 | ||
2423 | /* Returns true if the unit is inactive or going down */ | |
2424 | ||
2425 | if (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) | |
2426 | return true; | |
2427 | ||
2428 | if (u->meta.job && | |
2429 | (u->meta.job->type == JOB_START || | |
2430 | u->meta.job->type == JOB_RELOAD_OR_START || | |
2431 | u->meta.job->type == JOB_RESTART)) | |
2432 | return true; | |
2433 | ||
2434 | return false; | |
2435 | } | |
2436 | ||
71fad675 LP |
2437 | UnitType unit_name_to_type(const char *n) { |
2438 | UnitType t; | |
2439 | ||
2440 | assert(n); | |
2441 | ||
2442 | for (t = 0; t < _UNIT_TYPE_MAX; t++) | |
2443 | if (endswith(n, unit_vtable[t]->suffix)) | |
2444 | return t; | |
2445 | ||
2446 | return _UNIT_TYPE_INVALID; | |
2447 | } | |
2448 | ||
b9c0d441 | 2449 | bool unit_name_is_valid(const char *n, bool template_ok) { |
71fad675 LP |
2450 | UnitType t; |
2451 | ||
2452 | t = unit_name_to_type(n); | |
2453 | if (t < 0 || t >= _UNIT_TYPE_MAX) | |
2454 | return false; | |
2455 | ||
b9c0d441 | 2456 | return unit_name_is_valid_no_type(n, template_ok); |
71fad675 LP |
2457 | } |
2458 | ||
8a0867d6 LP |
2459 | int unit_kill(Unit *u, KillWho w, KillMode m, int signo, DBusError *error) { |
2460 | assert(u); | |
2461 | assert(w >= 0 && w < _KILL_WHO_MAX); | |
2462 | assert(m >= 0 && m < _KILL_MODE_MAX); | |
2463 | assert(signo > 0); | |
2464 | assert(signo < _NSIG); | |
2465 | ||
2466 | if (m == KILL_NONE) | |
2467 | return 0; | |
2468 | ||
2469 | if (!UNIT_VTABLE(u)->kill) | |
2470 | return -ENOTSUP; | |
2471 | ||
2472 | return UNIT_VTABLE(u)->kill(u, w, m, signo, error); | |
2473 | } | |
2474 | ||
6210e7fc LP |
2475 | int unit_following_set(Unit *u, Set **s) { |
2476 | assert(u); | |
2477 | assert(s); | |
2478 | ||
2479 | if (UNIT_VTABLE(u)->following_set) | |
2480 | return UNIT_VTABLE(u)->following_set(u, s); | |
2481 | ||
2482 | *s = NULL; | |
2483 | return 0; | |
2484 | } | |
2485 | ||
a4375746 LP |
2486 | UnitFileState unit_get_unit_file_state(Unit *u) { |
2487 | assert(u); | |
2488 | ||
2489 | if (u->meta.unit_file_state < 0 && u->meta.fragment_path) | |
2490 | u->meta.unit_file_state = unit_file_get_state( | |
2491 | u->meta.manager->running_as == MANAGER_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER, | |
2492 | NULL, file_name_from_path(u->meta.fragment_path)); | |
2493 | ||
2494 | return u->meta.unit_file_state; | |
2495 | } | |
2496 | ||
94f04347 LP |
2497 | static const char* const unit_load_state_table[_UNIT_LOAD_STATE_MAX] = { |
2498 | [UNIT_STUB] = "stub", | |
2499 | [UNIT_LOADED] = "loaded", | |
fdf20a31 | 2500 | [UNIT_ERROR] = "error", |
00dc5d76 | 2501 | [UNIT_MERGED] = "merged", |
6daf4f90 | 2502 | [UNIT_MASKED] = "masked" |
94f04347 LP |
2503 | }; |
2504 | ||
2505 | DEFINE_STRING_TABLE_LOOKUP(unit_load_state, UnitLoadState); | |
2506 | ||
2507 | static const char* const unit_active_state_table[_UNIT_ACTIVE_STATE_MAX] = { | |
2508 | [UNIT_ACTIVE] = "active", | |
032ff4af | 2509 | [UNIT_RELOADING] = "reloading", |
94f04347 | 2510 | [UNIT_INACTIVE] = "inactive", |
fdf20a31 | 2511 | [UNIT_FAILED] = "failed", |
94f04347 LP |
2512 | [UNIT_ACTIVATING] = "activating", |
2513 | [UNIT_DEACTIVATING] = "deactivating" | |
2514 | }; | |
2515 | ||
2516 | DEFINE_STRING_TABLE_LOOKUP(unit_active_state, UnitActiveState); | |
2517 | ||
2518 | static const char* const unit_dependency_table[_UNIT_DEPENDENCY_MAX] = { | |
2519 | [UNIT_REQUIRES] = "Requires", | |
9e2f7c11 | 2520 | [UNIT_REQUIRES_OVERRIDABLE] = "RequiresOverridable", |
94f04347 LP |
2521 | [UNIT_WANTS] = "Wants", |
2522 | [UNIT_REQUISITE] = "Requisite", | |
9e2f7c11 | 2523 | [UNIT_REQUISITE_OVERRIDABLE] = "RequisiteOverridable", |
94f04347 | 2524 | [UNIT_REQUIRED_BY] = "RequiredBy", |
9e2f7c11 | 2525 | [UNIT_REQUIRED_BY_OVERRIDABLE] = "RequiredByOverridable", |
b81884e7 | 2526 | [UNIT_BIND_TO] = "BindTo", |
94f04347 LP |
2527 | [UNIT_WANTED_BY] = "WantedBy", |
2528 | [UNIT_CONFLICTS] = "Conflicts", | |
69dd2852 | 2529 | [UNIT_CONFLICTED_BY] = "ConflictedBy", |
b81884e7 | 2530 | [UNIT_BOUND_BY] = "BoundBy", |
94f04347 LP |
2531 | [UNIT_BEFORE] = "Before", |
2532 | [UNIT_AFTER] = "After", | |
701cc384 | 2533 | [UNIT_REFERENCES] = "References", |
5de9682c LP |
2534 | [UNIT_REFERENCED_BY] = "ReferencedBy", |
2535 | [UNIT_ON_FAILURE] = "OnFailure" | |
94f04347 LP |
2536 | }; |
2537 | ||
2538 | DEFINE_STRING_TABLE_LOOKUP(unit_dependency, UnitDependency); |