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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 | |
5430f7f2 LP |
9 | under the terms of the GNU Lesser General Public License as published by |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
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 | |
5430f7f2 | 16 | Lesser General Public License for more details. |
a7334b09 | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
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 | 31 | |
877d54e9 LP |
32 | #include "systemd/sd-id128.h" |
33 | #include "systemd/sd-messages.h" | |
87f0e418 LP |
34 | #include "set.h" |
35 | #include "unit.h" | |
36 | #include "macro.h" | |
37 | #include "strv.h" | |
9eb977db | 38 | #include "path-util.h" |
87f0e418 LP |
39 | #include "load-fragment.h" |
40 | #include "load-dropin.h" | |
41 | #include "log.h" | |
9e2f7c11 | 42 | #include "unit-name.h" |
4139c1b2 | 43 | #include "dbus-unit.h" |
514f4ef5 | 44 | #include "special.h" |
c6c18be3 | 45 | #include "cgroup-util.h" |
4927fcae | 46 | #include "missing.h" |
71645aca | 47 | #include "mkdir.h" |
a5c32cff HH |
48 | #include "label.h" |
49 | #include "fileio-label.h" | |
814cc562 | 50 | #include "bus-errors.h" |
87f0e418 LP |
51 | |
52 | const UnitVTable * const unit_vtable[_UNIT_TYPE_MAX] = { | |
53 | [UNIT_SERVICE] = &service_vtable, | |
54 | [UNIT_TIMER] = &timer_vtable, | |
55 | [UNIT_SOCKET] = &socket_vtable, | |
56 | [UNIT_TARGET] = &target_vtable, | |
57 | [UNIT_DEVICE] = &device_vtable, | |
58 | [UNIT_MOUNT] = &mount_vtable, | |
59 | [UNIT_AUTOMOUNT] = &automount_vtable, | |
07b0b134 | 60 | [UNIT_SNAPSHOT] = &snapshot_vtable, |
01f78473 | 61 | [UNIT_SWAP] = &swap_vtable, |
a016b922 | 62 | [UNIT_PATH] = &path_vtable, |
6c12b52e LP |
63 | [UNIT_SLICE] = &slice_vtable, |
64 | [UNIT_SCOPE] = &scope_vtable | |
87f0e418 LP |
65 | }; |
66 | ||
7d17cfbc | 67 | Unit *unit_new(Manager *m, size_t size) { |
87f0e418 LP |
68 | Unit *u; |
69 | ||
70 | assert(m); | |
ac155bb8 | 71 | assert(size >= sizeof(Unit)); |
87f0e418 | 72 | |
7d17cfbc MS |
73 | u = malloc0(size); |
74 | if (!u) | |
87f0e418 LP |
75 | return NULL; |
76 | ||
ac155bb8 MS |
77 | u->names = set_new(string_hash_func, string_compare_func); |
78 | if (!u->names) { | |
87f0e418 LP |
79 | free(u); |
80 | return NULL; | |
81 | } | |
82 | ||
ac155bb8 MS |
83 | u->manager = m; |
84 | u->type = _UNIT_TYPE_INVALID; | |
85 | u->deserialized_job = _JOB_TYPE_INVALID; | |
86 | u->default_dependencies = true; | |
87 | u->unit_file_state = _UNIT_FILE_STATE_INVALID; | |
87f0e418 LP |
88 | |
89 | return u; | |
90 | } | |
91 | ||
f278026d LP |
92 | bool unit_has_name(Unit *u, const char *name) { |
93 | assert(u); | |
94 | assert(name); | |
95 | ||
ac155bb8 | 96 | return !!set_get(u->names, (char*) name); |
f278026d LP |
97 | } |
98 | ||
87f0e418 LP |
99 | int unit_add_name(Unit *u, const char *text) { |
100 | UnitType t; | |
276c3e78 | 101 | char *s, *i = NULL; |
87f0e418 LP |
102 | int r; |
103 | ||
104 | assert(u); | |
105 | assert(text); | |
106 | ||
9e2f7c11 | 107 | if (unit_name_is_template(text)) { |
ac155bb8 | 108 | if (!u->instance) |
9e2f7c11 | 109 | return -EINVAL; |
87f0e418 | 110 | |
ac155bb8 | 111 | s = unit_name_replace_instance(text, u->instance); |
9e2f7c11 LP |
112 | } else |
113 | s = strdup(text); | |
87f0e418 | 114 | |
9e2f7c11 LP |
115 | if (!s) |
116 | return -ENOMEM; | |
87f0e418 | 117 | |
b9c0d441 | 118 | if (!unit_name_is_valid(s, false)) { |
9e2f7c11 LP |
119 | r = -EINVAL; |
120 | goto fail; | |
121 | } | |
e537352b | 122 | |
9e2f7c11 | 123 | assert_se((t = unit_name_to_type(s)) >= 0); |
87f0e418 | 124 | |
ac155bb8 | 125 | if (u->type != _UNIT_TYPE_INVALID && t != u->type) { |
9e2f7c11 LP |
126 | r = -EINVAL; |
127 | goto fail; | |
128 | } | |
87f0e418 | 129 | |
9e2f7c11 LP |
130 | if ((r = unit_name_to_instance(s, &i)) < 0) |
131 | goto fail; | |
87f0e418 | 132 | |
796ba554 LP |
133 | if (i && unit_vtable[t]->no_instances) { |
134 | r = -EINVAL; | |
9e2f7c11 | 135 | goto fail; |
796ba554 | 136 | } |
9e2f7c11 | 137 | |
276c3e78 LP |
138 | /* Ensure that this unit is either instanced or not instanced, |
139 | * but not both. */ | |
ac155bb8 | 140 | if (u->type != _UNIT_TYPE_INVALID && !u->instance != !i) { |
9e2f7c11 LP |
141 | r = -EINVAL; |
142 | goto fail; | |
143 | } | |
144 | ||
145 | if (unit_vtable[t]->no_alias && | |
ac155bb8 MS |
146 | !set_isempty(u->names) && |
147 | !set_get(u->names, s)) { | |
9e2f7c11 LP |
148 | r = -EEXIST; |
149 | goto fail; | |
150 | } | |
151 | ||
ac155bb8 | 152 | if (hashmap_size(u->manager->units) >= MANAGER_MAX_NAMES) { |
4f0f902f LP |
153 | r = -E2BIG; |
154 | goto fail; | |
155 | } | |
156 | ||
ac155bb8 | 157 | if ((r = set_put(u->names, s)) < 0) { |
9e2f7c11 LP |
158 | if (r == -EEXIST) |
159 | r = 0; | |
160 | goto fail; | |
87f0e418 LP |
161 | } |
162 | ||
ac155bb8 MS |
163 | if ((r = hashmap_put(u->manager->units, s, u)) < 0) { |
164 | set_remove(u->names, s); | |
9e2f7c11 | 165 | goto fail; |
87f0e418 LP |
166 | } |
167 | ||
ac155bb8 | 168 | if (u->type == _UNIT_TYPE_INVALID) { |
ef734fd6 | 169 | |
ac155bb8 MS |
170 | u->type = t; |
171 | u->id = s; | |
172 | u->instance = i; | |
9e2f7c11 | 173 | |
ac155bb8 | 174 | LIST_PREPEND(Unit, units_by_type, u->manager->units_by_type[t], u); |
e537352b LP |
175 | |
176 | if (UNIT_VTABLE(u)->init) | |
177 | UNIT_VTABLE(u)->init(u); | |
9e2f7c11 LP |
178 | } else |
179 | free(i); | |
87f0e418 | 180 | |
c1e1601e | 181 | unit_add_to_dbus_queue(u); |
87f0e418 | 182 | return 0; |
9e2f7c11 LP |
183 | |
184 | fail: | |
185 | free(s); | |
186 | free(i); | |
187 | ||
188 | return r; | |
87f0e418 LP |
189 | } |
190 | ||
0ae97ec1 | 191 | int unit_choose_id(Unit *u, const char *name) { |
276c3e78 LP |
192 | char *s, *t = NULL, *i; |
193 | int r; | |
0ae97ec1 LP |
194 | |
195 | assert(u); | |
196 | assert(name); | |
197 | ||
9e2f7c11 LP |
198 | if (unit_name_is_template(name)) { |
199 | ||
ac155bb8 | 200 | if (!u->instance) |
9e2f7c11 LP |
201 | return -EINVAL; |
202 | ||
ac155bb8 | 203 | if (!(t = unit_name_replace_instance(name, u->instance))) |
9e2f7c11 LP |
204 | return -ENOMEM; |
205 | ||
206 | name = t; | |
207 | } | |
208 | ||
0ae97ec1 | 209 | /* Selects one of the names of this unit as the id */ |
ac155bb8 | 210 | s = set_get(u->names, (char*) name); |
9e2f7c11 | 211 | free(t); |
0ae97ec1 | 212 | |
9e2f7c11 | 213 | if (!s) |
0ae97ec1 LP |
214 | return -ENOENT; |
215 | ||
276c3e78 LP |
216 | if ((r = unit_name_to_instance(s, &i)) < 0) |
217 | return r; | |
218 | ||
ac155bb8 | 219 | u->id = s; |
276c3e78 | 220 | |
ac155bb8 MS |
221 | free(u->instance); |
222 | u->instance = i; | |
276c3e78 | 223 | |
c1e1601e | 224 | unit_add_to_dbus_queue(u); |
9e2f7c11 | 225 | |
0ae97ec1 LP |
226 | return 0; |
227 | } | |
228 | ||
f50e0a01 LP |
229 | int unit_set_description(Unit *u, const char *description) { |
230 | char *s; | |
231 | ||
232 | assert(u); | |
233 | ||
8aec412f LP |
234 | if (isempty(description)) |
235 | s = NULL; | |
236 | else { | |
237 | s = strdup(description); | |
238 | if (!s) | |
239 | return -ENOMEM; | |
240 | } | |
f50e0a01 | 241 | |
ac155bb8 MS |
242 | free(u->description); |
243 | u->description = s; | |
c1e1601e LP |
244 | |
245 | unit_add_to_dbus_queue(u); | |
f50e0a01 LP |
246 | return 0; |
247 | } | |
248 | ||
701cc384 LP |
249 | bool unit_check_gc(Unit *u) { |
250 | assert(u); | |
251 | ||
ac155bb8 | 252 | if (u->load_state == UNIT_STUB) |
b86d44e5 LP |
253 | return true; |
254 | ||
701cc384 LP |
255 | if (UNIT_VTABLE(u)->no_gc) |
256 | return true; | |
257 | ||
ac155bb8 | 258 | if (u->no_gc) |
6c073082 LP |
259 | return true; |
260 | ||
ac155bb8 | 261 | if (u->job) |
701cc384 LP |
262 | return true; |
263 | ||
e0209d83 MS |
264 | if (u->nop_job) |
265 | return true; | |
266 | ||
701cc384 LP |
267 | if (unit_active_state(u) != UNIT_INACTIVE) |
268 | return true; | |
269 | ||
9d576438 LP |
270 | if (u->refs) |
271 | return true; | |
272 | ||
701cc384 LP |
273 | if (UNIT_VTABLE(u)->check_gc) |
274 | if (UNIT_VTABLE(u)->check_gc(u)) | |
275 | return true; | |
276 | ||
277 | return false; | |
278 | } | |
279 | ||
87f0e418 LP |
280 | void unit_add_to_load_queue(Unit *u) { |
281 | assert(u); | |
ac155bb8 | 282 | assert(u->type != _UNIT_TYPE_INVALID); |
87f0e418 | 283 | |
ac155bb8 | 284 | if (u->load_state != UNIT_STUB || u->in_load_queue) |
87f0e418 LP |
285 | return; |
286 | ||
ac155bb8 MS |
287 | LIST_PREPEND(Unit, load_queue, u->manager->load_queue, u); |
288 | u->in_load_queue = true; | |
87f0e418 LP |
289 | } |
290 | ||
23a177ef LP |
291 | void unit_add_to_cleanup_queue(Unit *u) { |
292 | assert(u); | |
293 | ||
ac155bb8 | 294 | if (u->in_cleanup_queue) |
23a177ef LP |
295 | return; |
296 | ||
ac155bb8 MS |
297 | LIST_PREPEND(Unit, cleanup_queue, u->manager->cleanup_queue, u); |
298 | u->in_cleanup_queue = true; | |
23a177ef LP |
299 | } |
300 | ||
701cc384 LP |
301 | void unit_add_to_gc_queue(Unit *u) { |
302 | assert(u); | |
303 | ||
ac155bb8 | 304 | if (u->in_gc_queue || u->in_cleanup_queue) |
701cc384 LP |
305 | return; |
306 | ||
307 | if (unit_check_gc(u)) | |
308 | return; | |
309 | ||
ac155bb8 MS |
310 | LIST_PREPEND(Unit, gc_queue, u->manager->gc_queue, u); |
311 | u->in_gc_queue = true; | |
701cc384 | 312 | |
ac155bb8 | 313 | u->manager->n_in_gc_queue ++; |
701cc384 LP |
314 | } |
315 | ||
c1e1601e LP |
316 | void unit_add_to_dbus_queue(Unit *u) { |
317 | assert(u); | |
ac155bb8 | 318 | assert(u->type != _UNIT_TYPE_INVALID); |
c1e1601e | 319 | |
ac155bb8 | 320 | if (u->load_state == UNIT_STUB || u->in_dbus_queue) |
c1e1601e LP |
321 | return; |
322 | ||
a567261a | 323 | /* Shortcut things if nobody cares */ |
ac155bb8 MS |
324 | if (!bus_has_subscriber(u->manager)) { |
325 | u->sent_dbus_new_signal = true; | |
94b6dfa2 LP |
326 | return; |
327 | } | |
328 | ||
ac155bb8 MS |
329 | LIST_PREPEND(Unit, dbus_queue, u->manager->dbus_unit_queue, u); |
330 | u->in_dbus_queue = true; | |
c1e1601e LP |
331 | } |
332 | ||
87f0e418 LP |
333 | static void bidi_set_free(Unit *u, Set *s) { |
334 | Iterator i; | |
335 | Unit *other; | |
336 | ||
337 | assert(u); | |
338 | ||
339 | /* Frees the set and makes sure we are dropped from the | |
340 | * inverse pointers */ | |
341 | ||
342 | SET_FOREACH(other, s, i) { | |
343 | UnitDependency d; | |
344 | ||
345 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) | |
ac155bb8 | 346 | set_remove(other->dependencies[d], u); |
701cc384 LP |
347 | |
348 | unit_add_to_gc_queue(other); | |
87f0e418 LP |
349 | } |
350 | ||
351 | set_free(s); | |
352 | } | |
353 | ||
c2756a68 LP |
354 | static void unit_remove_transient(Unit *u) { |
355 | char **i; | |
356 | ||
357 | assert(u); | |
358 | ||
359 | if (!u->transient) | |
360 | return; | |
361 | ||
362 | if (u->fragment_path) | |
363 | unlink(u->fragment_path); | |
364 | ||
365 | STRV_FOREACH(i, u->dropin_paths) { | |
366 | _cleanup_free_ char *p = NULL; | |
367 | int r; | |
368 | ||
369 | unlink(*i); | |
370 | ||
371 | r = path_get_parent(*i, &p); | |
372 | if (r >= 0) | |
373 | rmdir(p); | |
374 | } | |
375 | } | |
376 | ||
87f0e418 LP |
377 | void unit_free(Unit *u) { |
378 | UnitDependency d; | |
379 | Iterator i; | |
380 | char *t; | |
381 | ||
382 | assert(u); | |
383 | ||
c2756a68 LP |
384 | if (u->manager->n_reloading <= 0) |
385 | unit_remove_transient(u); | |
386 | ||
c1e1601e LP |
387 | bus_unit_send_removed_signal(u); |
388 | ||
ac155bb8 | 389 | if (u->load_state != UNIT_STUB) |
a013b84b LP |
390 | if (UNIT_VTABLE(u)->done) |
391 | UNIT_VTABLE(u)->done(u); | |
392 | ||
ac155bb8 MS |
393 | SET_FOREACH(t, u->names, i) |
394 | hashmap_remove_value(u->manager->units, t, u); | |
87f0e418 | 395 | |
97e7d748 MS |
396 | if (u->job) { |
397 | Job *j = u->job; | |
398 | job_uninstall(j); | |
399 | job_free(j); | |
400 | } | |
964e0949 | 401 | |
e0209d83 MS |
402 | if (u->nop_job) { |
403 | Job *j = u->nop_job; | |
404 | job_uninstall(j); | |
405 | job_free(j); | |
406 | } | |
407 | ||
964e0949 | 408 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) |
ac155bb8 | 409 | bidi_set_free(u, u->dependencies[d]); |
964e0949 | 410 | |
7c8fa05c LP |
411 | if (u->requires_mounts_for) { |
412 | LIST_REMOVE(Unit, has_requires_mounts_for, u->manager->has_requires_mounts_for, u); | |
413 | strv_free(u->requires_mounts_for); | |
414 | } | |
415 | ||
ac155bb8 MS |
416 | if (u->type != _UNIT_TYPE_INVALID) |
417 | LIST_REMOVE(Unit, units_by_type, u->manager->units_by_type[u->type], u); | |
ef734fd6 | 418 | |
ac155bb8 MS |
419 | if (u->in_load_queue) |
420 | LIST_REMOVE(Unit, load_queue, u->manager->load_queue, u); | |
87f0e418 | 421 | |
ac155bb8 MS |
422 | if (u->in_dbus_queue) |
423 | LIST_REMOVE(Unit, dbus_queue, u->manager->dbus_unit_queue, u); | |
c1e1601e | 424 | |
ac155bb8 MS |
425 | if (u->in_cleanup_queue) |
426 | LIST_REMOVE(Unit, cleanup_queue, u->manager->cleanup_queue, u); | |
23a177ef | 427 | |
ac155bb8 MS |
428 | if (u->in_gc_queue) { |
429 | LIST_REMOVE(Unit, gc_queue, u->manager->gc_queue, u); | |
430 | u->manager->n_in_gc_queue--; | |
701cc384 LP |
431 | } |
432 | ||
4ad49000 LP |
433 | if (u->in_cgroup_queue) |
434 | LIST_REMOVE(Unit, cgroup_queue, u->manager->cgroup_queue, u); | |
87f0e418 | 435 | |
72673e86 LP |
436 | if (u->cgroup_path) { |
437 | hashmap_remove(u->manager->cgroup_unit, u->cgroup_path); | |
438 | free(u->cgroup_path); | |
439 | } | |
440 | ||
ac155bb8 | 441 | free(u->description); |
49dbfa7b | 442 | strv_free(u->documentation); |
ac155bb8 | 443 | free(u->fragment_path); |
1b64d026 | 444 | free(u->source_path); |
ae7a7182 | 445 | strv_free(u->dropin_paths); |
ac155bb8 | 446 | free(u->instance); |
87f0e418 | 447 | |
ac155bb8 | 448 | set_free_free(u->names); |
87f0e418 | 449 | |
ac155bb8 | 450 | condition_free_list(u->conditions); |
52661efd | 451 | |
702a2d8f LP |
452 | unit_ref_unset(&u->slice); |
453 | ||
ac155bb8 MS |
454 | while (u->refs) |
455 | unit_ref_unset(u->refs); | |
57020a3a | 456 | |
87f0e418 LP |
457 | free(u); |
458 | } | |
459 | ||
460 | UnitActiveState unit_active_state(Unit *u) { | |
461 | assert(u); | |
462 | ||
ac155bb8 | 463 | if (u->load_state == UNIT_MERGED) |
6124958c LP |
464 | return unit_active_state(unit_follow_merge(u)); |
465 | ||
466 | /* After a reload it might happen that a unit is not correctly | |
467 | * loaded but still has a process around. That's why we won't | |
fdf20a31 | 468 | * shortcut failed loading to UNIT_INACTIVE_FAILED. */ |
87f0e418 LP |
469 | |
470 | return UNIT_VTABLE(u)->active_state(u); | |
471 | } | |
472 | ||
10a94420 LP |
473 | const char* unit_sub_state_to_string(Unit *u) { |
474 | assert(u); | |
475 | ||
476 | return UNIT_VTABLE(u)->sub_state_to_string(u); | |
477 | } | |
478 | ||
23a177ef LP |
479 | static void complete_move(Set **s, Set **other) { |
480 | assert(s); | |
481 | assert(other); | |
87f0e418 | 482 | |
23a177ef LP |
483 | if (!*other) |
484 | return; | |
87f0e418 LP |
485 | |
486 | if (*s) | |
23a177ef LP |
487 | set_move(*s, *other); |
488 | else { | |
489 | *s = *other; | |
490 | *other = NULL; | |
491 | } | |
492 | } | |
87f0e418 | 493 | |
23a177ef LP |
494 | static void merge_names(Unit *u, Unit *other) { |
495 | char *t; | |
496 | Iterator i; | |
87f0e418 | 497 | |
23a177ef LP |
498 | assert(u); |
499 | assert(other); | |
500 | ||
ac155bb8 | 501 | complete_move(&u->names, &other->names); |
23a177ef | 502 | |
ac155bb8 MS |
503 | set_free_free(other->names); |
504 | other->names = NULL; | |
505 | other->id = NULL; | |
23a177ef | 506 | |
ac155bb8 MS |
507 | SET_FOREACH(t, u->names, i) |
508 | assert_se(hashmap_replace(u->manager->units, t, u) == 0); | |
87f0e418 LP |
509 | } |
510 | ||
23a177ef LP |
511 | static void merge_dependencies(Unit *u, Unit *other, UnitDependency d) { |
512 | Iterator i; | |
513 | Unit *back; | |
87f0e418 | 514 | int r; |
23a177ef LP |
515 | |
516 | assert(u); | |
517 | assert(other); | |
518 | assert(d < _UNIT_DEPENDENCY_MAX); | |
519 | ||
83a95334 | 520 | /* Fix backwards pointers */ |
ac155bb8 | 521 | SET_FOREACH(back, other->dependencies[d], i) { |
23a177ef LP |
522 | UnitDependency k; |
523 | ||
524 | for (k = 0; k < _UNIT_DEPENDENCY_MAX; k++) | |
ac155bb8 | 525 | if ((r = set_remove_and_put(back->dependencies[k], other, u)) < 0) { |
23a177ef LP |
526 | |
527 | if (r == -EEXIST) | |
ac155bb8 | 528 | set_remove(back->dependencies[k], other); |
23a177ef LP |
529 | else |
530 | assert(r == -ENOENT); | |
531 | } | |
532 | } | |
533 | ||
ac155bb8 | 534 | complete_move(&u->dependencies[d], &other->dependencies[d]); |
23a177ef | 535 | |
ac155bb8 MS |
536 | set_free(other->dependencies[d]); |
537 | other->dependencies[d] = NULL; | |
23a177ef LP |
538 | } |
539 | ||
540 | int unit_merge(Unit *u, Unit *other) { | |
87f0e418 LP |
541 | UnitDependency d; |
542 | ||
543 | assert(u); | |
544 | assert(other); | |
ac155bb8 MS |
545 | assert(u->manager == other->manager); |
546 | assert(u->type != _UNIT_TYPE_INVALID); | |
87f0e418 | 547 | |
cc916967 LP |
548 | other = unit_follow_merge(other); |
549 | ||
23a177ef LP |
550 | if (other == u) |
551 | return 0; | |
552 | ||
ac155bb8 | 553 | if (u->type != other->type) |
9e2f7c11 LP |
554 | return -EINVAL; |
555 | ||
ac155bb8 | 556 | if (!u->instance != !other->instance) |
87f0e418 LP |
557 | return -EINVAL; |
558 | ||
ac155bb8 | 559 | if (other->load_state != UNIT_STUB && |
c2756a68 | 560 | other->load_state != UNIT_NOT_FOUND) |
23a177ef | 561 | return -EEXIST; |
87f0e418 | 562 | |
ac155bb8 | 563 | if (other->job) |
819e213f LP |
564 | return -EEXIST; |
565 | ||
e0209d83 MS |
566 | if (other->nop_job) |
567 | return -EEXIST; | |
568 | ||
fdf20a31 | 569 | if (!UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other))) |
819e213f LP |
570 | return -EEXIST; |
571 | ||
87f0e418 | 572 | /* Merge names */ |
23a177ef | 573 | merge_names(u, other); |
87f0e418 | 574 | |
57020a3a | 575 | /* Redirect all references */ |
ac155bb8 MS |
576 | while (other->refs) |
577 | unit_ref_set(other->refs, u); | |
57020a3a | 578 | |
87f0e418 LP |
579 | /* Merge dependencies */ |
580 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) | |
23a177ef | 581 | merge_dependencies(u, other, d); |
87f0e418 | 582 | |
ac155bb8 MS |
583 | other->load_state = UNIT_MERGED; |
584 | other->merged_into = u; | |
23a177ef | 585 | |
3616a49c LP |
586 | /* If there is still some data attached to the other node, we |
587 | * don't need it anymore, and can free it. */ | |
ac155bb8 | 588 | if (other->load_state != UNIT_STUB) |
3616a49c LP |
589 | if (UNIT_VTABLE(other)->done) |
590 | UNIT_VTABLE(other)->done(other); | |
591 | ||
592 | unit_add_to_dbus_queue(u); | |
23a177ef LP |
593 | unit_add_to_cleanup_queue(other); |
594 | ||
595 | return 0; | |
596 | } | |
597 | ||
598 | int unit_merge_by_name(Unit *u, const char *name) { | |
599 | Unit *other; | |
9e2f7c11 LP |
600 | int r; |
601 | char *s = NULL; | |
23a177ef LP |
602 | |
603 | assert(u); | |
604 | assert(name); | |
605 | ||
9e2f7c11 | 606 | if (unit_name_is_template(name)) { |
ac155bb8 | 607 | if (!u->instance) |
9e2f7c11 LP |
608 | return -EINVAL; |
609 | ||
ac155bb8 | 610 | if (!(s = unit_name_replace_instance(name, u->instance))) |
9e2f7c11 LP |
611 | return -ENOMEM; |
612 | ||
613 | name = s; | |
614 | } | |
615 | ||
c2756a68 LP |
616 | other = manager_get_unit(u->manager, name); |
617 | if (!other) | |
9e2f7c11 LP |
618 | r = unit_add_name(u, name); |
619 | else | |
620 | r = unit_merge(u, other); | |
23a177ef | 621 | |
9e2f7c11 LP |
622 | free(s); |
623 | return r; | |
23a177ef LP |
624 | } |
625 | ||
626 | Unit* unit_follow_merge(Unit *u) { | |
627 | assert(u); | |
628 | ||
ac155bb8 MS |
629 | while (u->load_state == UNIT_MERGED) |
630 | assert_se(u = u->merged_into); | |
23a177ef LP |
631 | |
632 | return u; | |
633 | } | |
634 | ||
635 | int unit_add_exec_dependencies(Unit *u, ExecContext *c) { | |
636 | int r; | |
637 | ||
638 | assert(u); | |
639 | assert(c); | |
640 | ||
ecc6e2b8 LP |
641 | if (c->std_output != EXEC_OUTPUT_KMSG && |
642 | c->std_output != EXEC_OUTPUT_SYSLOG && | |
706343f4 | 643 | c->std_output != EXEC_OUTPUT_JOURNAL && |
28dbc1e8 LP |
644 | c->std_output != EXEC_OUTPUT_KMSG_AND_CONSOLE && |
645 | c->std_output != EXEC_OUTPUT_SYSLOG_AND_CONSOLE && | |
706343f4 | 646 | c->std_output != EXEC_OUTPUT_JOURNAL_AND_CONSOLE && |
ecc6e2b8 | 647 | c->std_error != EXEC_OUTPUT_KMSG && |
085c98af | 648 | c->std_error != EXEC_OUTPUT_SYSLOG && |
706343f4 | 649 | c->std_error != EXEC_OUTPUT_JOURNAL && |
085c98af | 650 | c->std_error != EXEC_OUTPUT_KMSG_AND_CONSOLE && |
706343f4 | 651 | c->std_error != EXEC_OUTPUT_JOURNAL_AND_CONSOLE && |
28dbc1e8 | 652 | c->std_error != EXEC_OUTPUT_SYSLOG_AND_CONSOLE) |
23a177ef LP |
653 | return 0; |
654 | ||
655 | /* If syslog or kernel logging is requested, make sure our own | |
656 | * logging daemon is run first. */ | |
657 | ||
9d246da3 MS |
658 | if (u->manager->running_as == SYSTEMD_SYSTEM) { |
659 | r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_JOURNALD_SOCKET, NULL, true); | |
660 | if (r < 0) | |
23a177ef | 661 | return r; |
9d246da3 | 662 | } |
23a177ef | 663 | |
87f0e418 LP |
664 | return 0; |
665 | } | |
666 | ||
87f0e418 LP |
667 | const char *unit_description(Unit *u) { |
668 | assert(u); | |
669 | ||
ac155bb8 MS |
670 | if (u->description) |
671 | return u->description; | |
87f0e418 | 672 | |
ac155bb8 | 673 | return strna(u->id); |
87f0e418 LP |
674 | } |
675 | ||
676 | void unit_dump(Unit *u, FILE *f, const char *prefix) { | |
49dbfa7b | 677 | char *t, **j; |
87f0e418 LP |
678 | UnitDependency d; |
679 | Iterator i; | |
47be870b LP |
680 | char *p2; |
681 | const char *prefix2; | |
173e3821 LP |
682 | char |
683 | timestamp1[FORMAT_TIMESTAMP_MAX], | |
684 | timestamp2[FORMAT_TIMESTAMP_MAX], | |
685 | timestamp3[FORMAT_TIMESTAMP_MAX], | |
faf919f1 LP |
686 | timestamp4[FORMAT_TIMESTAMP_MAX], |
687 | timespan[FORMAT_TIMESPAN_MAX]; | |
a7f241db | 688 | Unit *following; |
87f0e418 LP |
689 | |
690 | assert(u); | |
ac155bb8 | 691 | assert(u->type >= 0); |
87f0e418 LP |
692 | |
693 | if (!prefix) | |
694 | prefix = ""; | |
47be870b LP |
695 | p2 = strappend(prefix, "\t"); |
696 | prefix2 = p2 ? p2 : prefix; | |
87f0e418 LP |
697 | |
698 | fprintf(f, | |
40d50879 | 699 | "%s-> Unit %s:\n" |
87f0e418 | 700 | "%s\tDescription: %s\n" |
9e2f7c11 | 701 | "%s\tInstance: %s\n" |
87f0e418 | 702 | "%s\tUnit Load State: %s\n" |
2fad8195 | 703 | "%s\tUnit Active State: %s\n" |
173e3821 | 704 | "%s\tInactive Exit Timestamp: %s\n" |
2fad8195 | 705 | "%s\tActive Enter Timestamp: %s\n" |
701cc384 | 706 | "%s\tActive Exit Timestamp: %s\n" |
173e3821 | 707 | "%s\tInactive Enter Timestamp: %s\n" |
45fb0699 | 708 | "%s\tGC Check Good: %s\n" |
9444b1f2 | 709 | "%s\tNeed Daemon Reload: %s\n" |
c2756a68 | 710 | "%s\tTransient: %s\n" |
4ad49000 LP |
711 | "%s\tSlice: %s\n" |
712 | "%s\tCGroup: %s\n" | |
713 | "%s\tCGroup realized: %s\n" | |
714 | "%s\tCGroup mask: 0x%x\n", | |
ac155bb8 | 715 | prefix, u->id, |
87f0e418 | 716 | prefix, unit_description(u), |
ac155bb8 MS |
717 | prefix, strna(u->instance), |
718 | prefix, unit_load_state_to_string(u->load_state), | |
2fad8195 | 719 | prefix, unit_active_state_to_string(unit_active_state(u)), |
ac155bb8 MS |
720 | prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->inactive_exit_timestamp.realtime)), |
721 | prefix, strna(format_timestamp(timestamp2, sizeof(timestamp2), u->active_enter_timestamp.realtime)), | |
722 | prefix, strna(format_timestamp(timestamp3, sizeof(timestamp3), u->active_exit_timestamp.realtime)), | |
723 | prefix, strna(format_timestamp(timestamp4, sizeof(timestamp4), u->inactive_enter_timestamp.realtime)), | |
45fb0699 | 724 | prefix, yes_no(unit_check_gc(u)), |
9444b1f2 | 725 | prefix, yes_no(unit_need_daemon_reload(u)), |
c2756a68 | 726 | prefix, yes_no(u->transient), |
4ad49000 LP |
727 | prefix, strna(unit_slice_name(u)), |
728 | prefix, strna(u->cgroup_path), | |
729 | prefix, yes_no(u->cgroup_realized), | |
730 | prefix, u->cgroup_mask); | |
0301abf4 | 731 | |
ac155bb8 | 732 | SET_FOREACH(t, u->names, i) |
87f0e418 LP |
733 | fprintf(f, "%s\tName: %s\n", prefix, t); |
734 | ||
49dbfa7b LP |
735 | STRV_FOREACH(j, u->documentation) |
736 | fprintf(f, "%s\tDocumentation: %s\n", prefix, *j); | |
737 | ||
a7f241db | 738 | if ((following = unit_following(u))) |
ac155bb8 | 739 | fprintf(f, "%s\tFollowing: %s\n", prefix, following->id); |
8fe914ec | 740 | |
ac155bb8 MS |
741 | if (u->fragment_path) |
742 | fprintf(f, "%s\tFragment Path: %s\n", prefix, u->fragment_path); | |
23a177ef | 743 | |
1b64d026 LP |
744 | if (u->source_path) |
745 | fprintf(f, "%s\tSource Path: %s\n", prefix, u->source_path); | |
746 | ||
ae7a7182 | 747 | STRV_FOREACH(j, u->dropin_paths) |
2875e22b | 748 | fprintf(f, "%s\tDropIn Path: %s\n", prefix, *j); |
ae7a7182 | 749 | |
ac155bb8 | 750 | if (u->job_timeout > 0) |
2fa4092c | 751 | fprintf(f, "%s\tJob Timeout: %s\n", prefix, format_timespan(timespan, sizeof(timespan), u->job_timeout, 0)); |
faf919f1 | 752 | |
ac155bb8 | 753 | condition_dump_list(u->conditions, f, prefix); |
52661efd | 754 | |
ac155bb8 | 755 | if (dual_timestamp_is_set(&u->condition_timestamp)) |
2791a8f8 LP |
756 | fprintf(f, |
757 | "%s\tCondition Timestamp: %s\n" | |
758 | "%s\tCondition Result: %s\n", | |
ac155bb8 MS |
759 | prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->condition_timestamp.realtime)), |
760 | prefix, yes_no(u->condition_result)); | |
2791a8f8 | 761 | |
87f0e418 LP |
762 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) { |
763 | Unit *other; | |
764 | ||
ac155bb8 MS |
765 | SET_FOREACH(other, u->dependencies[d], i) |
766 | fprintf(f, "%s\t%s: %s\n", prefix, unit_dependency_to_string(d), other->id); | |
87f0e418 LP |
767 | } |
768 | ||
7c8fa05c | 769 | if (!strv_isempty(u->requires_mounts_for)) { |
7c8fa05c LP |
770 | fprintf(f, |
771 | "%s\tRequiresMountsFor:", prefix); | |
772 | ||
773 | STRV_FOREACH(j, u->requires_mounts_for) | |
774 | fprintf(f, " %s", *j); | |
775 | ||
776 | fputs("\n", f); | |
777 | } | |
778 | ||
ac155bb8 | 779 | if (u->load_state == UNIT_LOADED) { |
ab1f0633 | 780 | |
b0650475 | 781 | fprintf(f, |
a40eb732 | 782 | "%s\tStopWhenUnneeded: %s\n" |
b5e9dba8 LP |
783 | "%s\tRefuseManualStart: %s\n" |
784 | "%s\tRefuseManualStop: %s\n" | |
222ae6a8 | 785 | "%s\tDefaultDependencies: %s\n" |
c8f4d764 | 786 | "%s\tOnFailureIsolate: %s\n" |
7a6000a6 LP |
787 | "%s\tIgnoreOnIsolate: %s\n" |
788 | "%s\tIgnoreOnSnapshot: %s\n", | |
ac155bb8 MS |
789 | prefix, yes_no(u->stop_when_unneeded), |
790 | prefix, yes_no(u->refuse_manual_start), | |
791 | prefix, yes_no(u->refuse_manual_stop), | |
792 | prefix, yes_no(u->default_dependencies), | |
793 | prefix, yes_no(u->on_failure_isolate), | |
794 | prefix, yes_no(u->ignore_on_isolate), | |
795 | prefix, yes_no(u->ignore_on_snapshot)); | |
796 | ||
23a177ef LP |
797 | if (UNIT_VTABLE(u)->dump) |
798 | UNIT_VTABLE(u)->dump(u, f, prefix2); | |
b0650475 | 799 | |
ac155bb8 | 800 | } else if (u->load_state == UNIT_MERGED) |
b0650475 LP |
801 | fprintf(f, |
802 | "%s\tMerged into: %s\n", | |
ac155bb8 MS |
803 | prefix, u->merged_into->id); |
804 | else if (u->load_state == UNIT_ERROR) | |
805 | fprintf(f, "%s\tLoad Error Code: %s\n", prefix, strerror(-u->load_error)); | |
8821a00f | 806 | |
87f0e418 | 807 | |
ac155bb8 MS |
808 | if (u->job) |
809 | job_dump(u->job, f, prefix2); | |
87f0e418 | 810 | |
e0209d83 MS |
811 | if (u->nop_job) |
812 | job_dump(u->nop_job, f, prefix2); | |
813 | ||
47be870b | 814 | free(p2); |
87f0e418 LP |
815 | } |
816 | ||
817 | /* Common implementation for multiple backends */ | |
e537352b | 818 | int unit_load_fragment_and_dropin(Unit *u) { |
23a177ef LP |
819 | int r; |
820 | ||
821 | assert(u); | |
23a177ef LP |
822 | |
823 | /* Load a .service file */ | |
4ad49000 LP |
824 | r = unit_load_fragment(u); |
825 | if (r < 0) | |
23a177ef LP |
826 | return r; |
827 | ||
ac155bb8 | 828 | if (u->load_state == UNIT_STUB) |
23a177ef LP |
829 | return -ENOENT; |
830 | ||
831 | /* Load drop-in directory data */ | |
4ad49000 LP |
832 | r = unit_load_dropin(unit_follow_merge(u)); |
833 | if (r < 0) | |
23a177ef LP |
834 | return r; |
835 | ||
836 | return 0; | |
837 | } | |
838 | ||
839 | /* Common implementation for multiple backends */ | |
e537352b | 840 | int unit_load_fragment_and_dropin_optional(Unit *u) { |
23a177ef | 841 | int r; |
87f0e418 LP |
842 | |
843 | assert(u); | |
844 | ||
23a177ef LP |
845 | /* Same as unit_load_fragment_and_dropin(), but whether |
846 | * something can be loaded or not doesn't matter. */ | |
847 | ||
848 | /* Load a .service file */ | |
4ad49000 LP |
849 | r = unit_load_fragment(u); |
850 | if (r < 0) | |
87f0e418 LP |
851 | return r; |
852 | ||
ac155bb8 MS |
853 | if (u->load_state == UNIT_STUB) |
854 | u->load_state = UNIT_LOADED; | |
d46de8a1 | 855 | |
87f0e418 | 856 | /* Load drop-in directory data */ |
4ad49000 LP |
857 | r = unit_load_dropin(unit_follow_merge(u)); |
858 | if (r < 0) | |
87f0e418 LP |
859 | return r; |
860 | ||
23a177ef | 861 | return 0; |
87f0e418 LP |
862 | } |
863 | ||
bba34eed | 864 | int unit_add_default_target_dependency(Unit *u, Unit *target) { |
98bc2000 LP |
865 | assert(u); |
866 | assert(target); | |
867 | ||
ac155bb8 | 868 | if (target->type != UNIT_TARGET) |
98bc2000 LP |
869 | return 0; |
870 | ||
35b8ca3a | 871 | /* Only add the dependency if both units are loaded, so that |
bba34eed | 872 | * that loop check below is reliable */ |
ac155bb8 MS |
873 | if (u->load_state != UNIT_LOADED || |
874 | target->load_state != UNIT_LOADED) | |
bba34eed LP |
875 | return 0; |
876 | ||
21256a2b LP |
877 | /* If either side wants no automatic dependencies, then let's |
878 | * skip this */ | |
ac155bb8 MS |
879 | if (!u->default_dependencies || |
880 | !target->default_dependencies) | |
21256a2b LP |
881 | return 0; |
882 | ||
98bc2000 | 883 | /* Don't create loops */ |
ac155bb8 | 884 | if (set_get(target->dependencies[UNIT_BEFORE], u)) |
98bc2000 LP |
885 | return 0; |
886 | ||
887 | return unit_add_dependency(target, UNIT_AFTER, u, true); | |
888 | } | |
889 | ||
890 | static int unit_add_default_dependencies(Unit *u) { | |
a016b922 | 891 | |
21256a2b LP |
892 | static const UnitDependency deps[] = { |
893 | UNIT_REQUIRED_BY, | |
894 | UNIT_REQUIRED_BY_OVERRIDABLE, | |
895 | UNIT_WANTED_BY, | |
896 | UNIT_BOUND_BY | |
897 | }; | |
898 | ||
bba34eed | 899 | Unit *target; |
98bc2000 LP |
900 | Iterator i; |
901 | int r; | |
21256a2b | 902 | unsigned k; |
98bc2000 LP |
903 | |
904 | assert(u); | |
905 | ||
21256a2b | 906 | for (k = 0; k < ELEMENTSOF(deps); k++) |
a016b922 LP |
907 | SET_FOREACH(target, u->dependencies[deps[k]], i) { |
908 | r = unit_add_default_target_dependency(u, target); | |
909 | if (r < 0) | |
21256a2b | 910 | return r; |
a016b922 LP |
911 | } |
912 | ||
4ad49000 LP |
913 | if (u->default_dependencies && unit_get_cgroup_context(u)) { |
914 | if (UNIT_ISSET(u->slice)) | |
915 | r = unit_add_two_dependencies(u, UNIT_AFTER, UNIT_WANTS, UNIT_DEREF(u->slice), true); | |
916 | else | |
917 | r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_WANTS, SPECIAL_ROOT_SLICE, NULL, true); | |
918 | ||
a016b922 LP |
919 | if (r < 0) |
920 | return r; | |
921 | } | |
b81884e7 | 922 | |
98bc2000 LP |
923 | return 0; |
924 | } | |
925 | ||
87f0e418 LP |
926 | int unit_load(Unit *u) { |
927 | int r; | |
928 | ||
929 | assert(u); | |
930 | ||
ac155bb8 MS |
931 | if (u->in_load_queue) { |
932 | LIST_REMOVE(Unit, load_queue, u->manager->load_queue, u); | |
933 | u->in_load_queue = false; | |
87f0e418 LP |
934 | } |
935 | ||
ac155bb8 | 936 | if (u->type == _UNIT_TYPE_INVALID) |
e537352b LP |
937 | return -EINVAL; |
938 | ||
ac155bb8 | 939 | if (u->load_state != UNIT_STUB) |
87f0e418 LP |
940 | return 0; |
941 | ||
c2756a68 LP |
942 | if (UNIT_VTABLE(u)->load) { |
943 | r = UNIT_VTABLE(u)->load(u); | |
944 | if (r < 0) | |
87f0e418 | 945 | goto fail; |
c2756a68 | 946 | } |
23a177ef | 947 | |
ac155bb8 | 948 | if (u->load_state == UNIT_STUB) { |
23a177ef LP |
949 | r = -ENOENT; |
950 | goto fail; | |
951 | } | |
952 | ||
7c8fa05c | 953 | if (u->load_state == UNIT_LOADED) { |
c2756a68 LP |
954 | |
955 | if (u->default_dependencies) { | |
956 | r = unit_add_default_dependencies(u); | |
957 | if (r < 0) | |
958 | goto fail; | |
959 | } | |
960 | ||
7c8fa05c LP |
961 | r = unit_add_mount_links(u); |
962 | if (r < 0) | |
c2756a68 | 963 | goto fail; |
7c8fa05c | 964 | |
c2756a68 LP |
965 | if (u->on_failure_isolate && |
966 | set_size(u->dependencies[UNIT_ON_FAILURE]) > 1) { | |
f68319bb | 967 | |
c2756a68 LP |
968 | log_error_unit(u->id, |
969 | "More than one OnFailure= dependencies specified for %s but OnFailureIsolate= enabled. Refusing.", u->id); | |
f68319bb | 970 | |
c2756a68 LP |
971 | r = -EINVAL; |
972 | goto fail; | |
973 | } | |
f68319bb LP |
974 | } |
975 | ||
ac155bb8 | 976 | assert((u->load_state != UNIT_MERGED) == !u->merged_into); |
23a177ef LP |
977 | |
978 | unit_add_to_dbus_queue(unit_follow_merge(u)); | |
701cc384 | 979 | unit_add_to_gc_queue(u); |
87f0e418 | 980 | |
87f0e418 LP |
981 | return 0; |
982 | ||
983 | fail: | |
c2756a68 | 984 | u->load_state = u->load_state == UNIT_STUB ? UNIT_NOT_FOUND : UNIT_ERROR; |
ac155bb8 | 985 | u->load_error = r; |
c1e1601e | 986 | unit_add_to_dbus_queue(u); |
9a46fc3b | 987 | unit_add_to_gc_queue(u); |
23a177ef | 988 | |
c1b6628d ZJS |
989 | log_debug_unit(u->id, "Failed to load configuration for %s: %s", |
990 | u->id, strerror(-r)); | |
23a177ef | 991 | |
87f0e418 LP |
992 | return r; |
993 | } | |
994 | ||
90bbc946 LP |
995 | bool unit_condition_test(Unit *u) { |
996 | assert(u); | |
997 | ||
ac155bb8 | 998 | dual_timestamp_get(&u->condition_timestamp); |
4b744dfa | 999 | u->condition_result = condition_test_list(u->id, u->conditions); |
90bbc946 | 1000 | |
ac155bb8 | 1001 | return u->condition_result; |
90bbc946 LP |
1002 | } |
1003 | ||
44a6b1b6 | 1004 | _pure_ static const char* unit_get_status_message_format(Unit *u, JobType t) { |
c6918296 | 1005 | const UnitStatusMessageFormats *format_table; |
877d54e9 LP |
1006 | |
1007 | assert(u); | |
1008 | assert(t >= 0); | |
1009 | assert(t < _JOB_TYPE_MAX); | |
1010 | ||
1011 | if (t != JOB_START && t != JOB_STOP) | |
1012 | return NULL; | |
c6918296 MS |
1013 | |
1014 | format_table = &UNIT_VTABLE(u)->status_message_formats; | |
1015 | if (!format_table) | |
877d54e9 LP |
1016 | return NULL; |
1017 | ||
1018 | return format_table->starting_stopping[t == JOB_STOP]; | |
1019 | } | |
1020 | ||
44a6b1b6 | 1021 | _pure_ static const char *unit_get_status_message_format_try_harder(Unit *u, JobType t) { |
877d54e9 LP |
1022 | const char *format; |
1023 | ||
1024 | assert(u); | |
1025 | assert(t >= 0); | |
1026 | assert(t < _JOB_TYPE_MAX); | |
1027 | ||
1028 | format = unit_get_status_message_format(u, t); | |
1029 | if (format) | |
1030 | return format; | |
1031 | ||
1032 | /* Return generic strings */ | |
1033 | if (t == JOB_START) | |
1034 | return "Starting %s."; | |
1035 | else if (t == JOB_STOP) | |
1036 | return "Stopping %s."; | |
1037 | else if (t == JOB_RELOAD) | |
1038 | return "Reloading %s."; | |
1039 | ||
1040 | return NULL; | |
1041 | } | |
1042 | ||
1043 | static void unit_status_print_starting_stopping(Unit *u, JobType t) { | |
1044 | const char *format; | |
1045 | ||
1046 | assert(u); | |
1047 | ||
1048 | /* We only print status messages for selected units on | |
1049 | * selected operations. */ | |
c6918296 | 1050 | |
877d54e9 | 1051 | format = unit_get_status_message_format(u, t); |
c6918296 MS |
1052 | if (!format) |
1053 | return; | |
1054 | ||
49b1d377 | 1055 | unit_status_printf(u, "", format); |
c6918296 MS |
1056 | } |
1057 | ||
877d54e9 LP |
1058 | #pragma GCC diagnostic push |
1059 | #pragma GCC diagnostic ignored "-Wformat-nonliteral" | |
1060 | static void unit_status_log_starting_stopping_reloading(Unit *u, JobType t) { | |
1061 | const char *format; | |
1062 | char buf[LINE_MAX]; | |
1063 | sd_id128_t mid; | |
1064 | ||
1065 | assert(u); | |
1066 | ||
1067 | if (t != JOB_START && t != JOB_STOP && t != JOB_RELOAD) | |
1068 | return; | |
1069 | ||
81270860 LP |
1070 | if (log_on_console()) |
1071 | return; | |
1072 | ||
877d54e9 LP |
1073 | /* We log status messages for all units and all operations. */ |
1074 | ||
1075 | format = unit_get_status_message_format_try_harder(u, t); | |
1076 | if (!format) | |
1077 | return; | |
1078 | ||
1079 | snprintf(buf, sizeof(buf), format, unit_description(u)); | |
1080 | char_array_0(buf); | |
1081 | ||
1082 | mid = t == JOB_START ? SD_MESSAGE_UNIT_STARTING : | |
1083 | t == JOB_STOP ? SD_MESSAGE_UNIT_STOPPING : | |
1084 | SD_MESSAGE_UNIT_RELOADING; | |
1085 | ||
bbc9006e | 1086 | log_struct_unit(LOG_INFO, |
c1b6628d ZJS |
1087 | u->id, |
1088 | MESSAGE_ID(mid), | |
1089 | "MESSAGE=%s", buf, | |
1090 | NULL); | |
877d54e9 LP |
1091 | } |
1092 | #pragma GCC diagnostic pop | |
1093 | ||
87f0e418 | 1094 | /* Errors: |
d5159713 LP |
1095 | * -EBADR: This unit type does not support starting. |
1096 | * -EALREADY: Unit is already started. | |
1097 | * -EAGAIN: An operation is already in progress. Retry later. | |
1098 | * -ECANCELED: Too many requests for now. | |
87f0e418 LP |
1099 | */ |
1100 | int unit_start(Unit *u) { | |
1101 | UnitActiveState state; | |
92ab323c | 1102 | Unit *following; |
87f0e418 LP |
1103 | |
1104 | assert(u); | |
1105 | ||
ac155bb8 | 1106 | if (u->load_state != UNIT_LOADED) |
6124958c LP |
1107 | return -EINVAL; |
1108 | ||
a82e5507 LP |
1109 | /* If this is already started, then this will succeed. Note |
1110 | * that this will even succeed if this unit is not startable | |
1111 | * by the user. This is relied on to detect when we need to | |
1112 | * wait for units and when waiting is finished. */ | |
87f0e418 LP |
1113 | state = unit_active_state(u); |
1114 | if (UNIT_IS_ACTIVE_OR_RELOADING(state)) | |
1115 | return -EALREADY; | |
1116 | ||
a82e5507 LP |
1117 | /* If the conditions failed, don't do anything at all. If we |
1118 | * already are activating this call might still be useful to | |
1119 | * speed up activation in case there is some hold-off time, | |
1120 | * but we don't want to recheck the condition in that case. */ | |
1121 | if (state != UNIT_ACTIVATING && | |
1122 | !unit_condition_test(u)) { | |
c1b6628d | 1123 | log_debug_unit(u->id, "Starting of %s requested but condition failed. Ignoring.", u->id); |
52661efd LP |
1124 | return -EALREADY; |
1125 | } | |
1126 | ||
92ab323c | 1127 | /* Forward to the main object, if we aren't it. */ |
52990c2e ZJS |
1128 | following = unit_following(u); |
1129 | if (following) { | |
c1b6628d ZJS |
1130 | log_debug_unit(u->id, "Redirecting start request from %s to %s.", |
1131 | u->id, following->id); | |
92ab323c LP |
1132 | return unit_start(following); |
1133 | } | |
1134 | ||
877d54e9 LP |
1135 | unit_status_log_starting_stopping_reloading(u, JOB_START); |
1136 | unit_status_print_starting_stopping(u, JOB_START); | |
c6918296 | 1137 | |
92ab323c LP |
1138 | /* If it is stopped, but we cannot start it, then fail */ |
1139 | if (!UNIT_VTABLE(u)->start) | |
1140 | return -EBADR; | |
1141 | ||
87f0e418 LP |
1142 | /* We don't suppress calls to ->start() here when we are |
1143 | * already starting, to allow this request to be used as a | |
1144 | * "hurry up" call, for example when the unit is in some "auto | |
1145 | * restart" state where it waits for a holdoff timer to elapse | |
1146 | * before it will start again. */ | |
1147 | ||
c1e1601e | 1148 | unit_add_to_dbus_queue(u); |
9e58ff9c | 1149 | |
87f0e418 LP |
1150 | return UNIT_VTABLE(u)->start(u); |
1151 | } | |
1152 | ||
1153 | bool unit_can_start(Unit *u) { | |
1154 | assert(u); | |
1155 | ||
1156 | return !!UNIT_VTABLE(u)->start; | |
1157 | } | |
1158 | ||
2528a7a6 LP |
1159 | bool unit_can_isolate(Unit *u) { |
1160 | assert(u); | |
1161 | ||
1162 | return unit_can_start(u) && | |
ac155bb8 | 1163 | u->allow_isolate; |
2528a7a6 LP |
1164 | } |
1165 | ||
87f0e418 LP |
1166 | /* Errors: |
1167 | * -EBADR: This unit type does not support stopping. | |
1168 | * -EALREADY: Unit is already stopped. | |
1169 | * -EAGAIN: An operation is already in progress. Retry later. | |
1170 | */ | |
1171 | int unit_stop(Unit *u) { | |
1172 | UnitActiveState state; | |
92ab323c | 1173 | Unit *following; |
87f0e418 LP |
1174 | |
1175 | assert(u); | |
1176 | ||
87f0e418 | 1177 | state = unit_active_state(u); |
fdf20a31 | 1178 | if (UNIT_IS_INACTIVE_OR_FAILED(state)) |
87f0e418 LP |
1179 | return -EALREADY; |
1180 | ||
92ab323c | 1181 | if ((following = unit_following(u))) { |
c1b6628d ZJS |
1182 | log_debug_unit(u->id, "Redirecting stop request from %s to %s.", |
1183 | u->id, following->id); | |
92ab323c LP |
1184 | return unit_stop(following); |
1185 | } | |
1186 | ||
877d54e9 LP |
1187 | unit_status_log_starting_stopping_reloading(u, JOB_STOP); |
1188 | unit_status_print_starting_stopping(u, JOB_STOP); | |
c6918296 | 1189 | |
7898b0cf LP |
1190 | if (!UNIT_VTABLE(u)->stop) |
1191 | return -EBADR; | |
1192 | ||
c1e1601e | 1193 | unit_add_to_dbus_queue(u); |
9e58ff9c | 1194 | |
87f0e418 LP |
1195 | return UNIT_VTABLE(u)->stop(u); |
1196 | } | |
1197 | ||
1198 | /* Errors: | |
1199 | * -EBADR: This unit type does not support reloading. | |
1200 | * -ENOEXEC: Unit is not started. | |
1201 | * -EAGAIN: An operation is already in progress. Retry later. | |
1202 | */ | |
1203 | int unit_reload(Unit *u) { | |
1204 | UnitActiveState state; | |
92ab323c | 1205 | Unit *following; |
87f0e418 LP |
1206 | |
1207 | assert(u); | |
1208 | ||
ac155bb8 | 1209 | if (u->load_state != UNIT_LOADED) |
6124958c LP |
1210 | return -EINVAL; |
1211 | ||
87f0e418 LP |
1212 | if (!unit_can_reload(u)) |
1213 | return -EBADR; | |
1214 | ||
1215 | state = unit_active_state(u); | |
e364ad06 | 1216 | if (state == UNIT_RELOADING) |
87f0e418 LP |
1217 | return -EALREADY; |
1218 | ||
e364ad06 | 1219 | if (state != UNIT_ACTIVE) |
87f0e418 LP |
1220 | return -ENOEXEC; |
1221 | ||
92ab323c | 1222 | if ((following = unit_following(u))) { |
c1b6628d ZJS |
1223 | log_debug_unit(u->id, "Redirecting reload request from %s to %s.", |
1224 | u->id, following->id); | |
92ab323c LP |
1225 | return unit_reload(following); |
1226 | } | |
1227 | ||
877d54e9 LP |
1228 | unit_status_log_starting_stopping_reloading(u, JOB_RELOAD); |
1229 | ||
c1e1601e | 1230 | unit_add_to_dbus_queue(u); |
87f0e418 LP |
1231 | return UNIT_VTABLE(u)->reload(u); |
1232 | } | |
1233 | ||
1234 | bool unit_can_reload(Unit *u) { | |
1235 | assert(u); | |
1236 | ||
1237 | if (!UNIT_VTABLE(u)->reload) | |
1238 | return false; | |
1239 | ||
1240 | if (!UNIT_VTABLE(u)->can_reload) | |
1241 | return true; | |
1242 | ||
1243 | return UNIT_VTABLE(u)->can_reload(u); | |
1244 | } | |
1245 | ||
b4a16b7b | 1246 | static void unit_check_unneeded(Unit *u) { |
f3bff0eb LP |
1247 | Iterator i; |
1248 | Unit *other; | |
1249 | ||
1250 | assert(u); | |
1251 | ||
1252 | /* If this service shall be shut down when unneeded then do | |
1253 | * so. */ | |
1254 | ||
ac155bb8 | 1255 | if (!u->stop_when_unneeded) |
f3bff0eb LP |
1256 | return; |
1257 | ||
1258 | if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) | |
1259 | return; | |
1260 | ||
ac155bb8 | 1261 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRED_BY], i) |
31afa0a4 | 1262 | if (unit_active_or_pending(other)) |
f3bff0eb LP |
1263 | return; |
1264 | ||
ac155bb8 | 1265 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRED_BY_OVERRIDABLE], i) |
31afa0a4 | 1266 | if (unit_active_or_pending(other)) |
f3bff0eb LP |
1267 | return; |
1268 | ||
ac155bb8 | 1269 | SET_FOREACH(other, u->dependencies[UNIT_WANTED_BY], i) |
31afa0a4 | 1270 | if (unit_active_or_pending(other)) |
f3bff0eb LP |
1271 | return; |
1272 | ||
ac155bb8 | 1273 | SET_FOREACH(other, u->dependencies[UNIT_BOUND_BY], i) |
31afa0a4 | 1274 | if (unit_active_or_pending(other)) |
b81884e7 LP |
1275 | return; |
1276 | ||
c1b6628d | 1277 | log_info_unit(u->id, "Service %s is not needed anymore. Stopping.", u->id); |
f3bff0eb LP |
1278 | |
1279 | /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */ | |
ac155bb8 | 1280 | manager_add_job(u->manager, JOB_STOP, u, JOB_FAIL, true, NULL, NULL); |
f3bff0eb LP |
1281 | } |
1282 | ||
87f0e418 LP |
1283 | static void retroactively_start_dependencies(Unit *u) { |
1284 | Iterator i; | |
1285 | Unit *other; | |
1286 | ||
1287 | assert(u); | |
1288 | assert(UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))); | |
1289 | ||
ac155bb8 MS |
1290 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRES], i) |
1291 | if (!set_get(u->dependencies[UNIT_AFTER], other) && | |
b81884e7 | 1292 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
ac155bb8 | 1293 | manager_add_job(u->manager, JOB_START, other, JOB_REPLACE, true, NULL, NULL); |
b81884e7 | 1294 | |
7f2cddae | 1295 | SET_FOREACH(other, u->dependencies[UNIT_BINDS_TO], i) |
ac155bb8 | 1296 | if (!set_get(u->dependencies[UNIT_AFTER], other) && |
b81884e7 | 1297 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
ac155bb8 | 1298 | manager_add_job(u->manager, JOB_START, other, JOB_REPLACE, true, NULL, NULL); |
87f0e418 | 1299 | |
ac155bb8 MS |
1300 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRES_OVERRIDABLE], i) |
1301 | if (!set_get(u->dependencies[UNIT_AFTER], other) && | |
b81884e7 | 1302 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
ac155bb8 | 1303 | manager_add_job(u->manager, JOB_START, other, JOB_FAIL, false, NULL, NULL); |
87f0e418 | 1304 | |
ac155bb8 MS |
1305 | SET_FOREACH(other, u->dependencies[UNIT_WANTS], i) |
1306 | if (!set_get(u->dependencies[UNIT_AFTER], other) && | |
b81884e7 | 1307 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
ac155bb8 | 1308 | manager_add_job(u->manager, JOB_START, other, JOB_FAIL, false, NULL, NULL); |
87f0e418 | 1309 | |
ac155bb8 | 1310 | SET_FOREACH(other, u->dependencies[UNIT_CONFLICTS], i) |
b81884e7 | 1311 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
ac155bb8 | 1312 | manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL); |
69dd2852 | 1313 | |
ac155bb8 | 1314 | SET_FOREACH(other, u->dependencies[UNIT_CONFLICTED_BY], i) |
b81884e7 | 1315 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
ac155bb8 | 1316 | manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL); |
87f0e418 LP |
1317 | } |
1318 | ||
1319 | static void retroactively_stop_dependencies(Unit *u) { | |
1320 | Iterator i; | |
1321 | Unit *other; | |
1322 | ||
1323 | assert(u); | |
1324 | assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))); | |
1325 | ||
b81884e7 | 1326 | /* Pull down units which are bound to us recursively if enabled */ |
ac155bb8 | 1327 | SET_FOREACH(other, u->dependencies[UNIT_BOUND_BY], i) |
b81884e7 | 1328 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
ac155bb8 | 1329 | manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL); |
cd0504d0 MS |
1330 | } |
1331 | ||
1332 | static void check_unneeded_dependencies(Unit *u) { | |
1333 | Iterator i; | |
1334 | Unit *other; | |
1335 | ||
1336 | assert(u); | |
1337 | assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))); | |
f3bff0eb LP |
1338 | |
1339 | /* Garbage collect services that might not be needed anymore, if enabled */ | |
ac155bb8 | 1340 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRES], i) |
87f0e418 | 1341 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1342 | unit_check_unneeded(other); |
ac155bb8 | 1343 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRES_OVERRIDABLE], i) |
f3bff0eb | 1344 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1345 | unit_check_unneeded(other); |
ac155bb8 | 1346 | SET_FOREACH(other, u->dependencies[UNIT_WANTS], i) |
f3bff0eb | 1347 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1348 | unit_check_unneeded(other); |
ac155bb8 | 1349 | SET_FOREACH(other, u->dependencies[UNIT_REQUISITE], i) |
f3bff0eb | 1350 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1351 | unit_check_unneeded(other); |
ac155bb8 | 1352 | SET_FOREACH(other, u->dependencies[UNIT_REQUISITE_OVERRIDABLE], i) |
f3bff0eb | 1353 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1354 | unit_check_unneeded(other); |
7f2cddae | 1355 | SET_FOREACH(other, u->dependencies[UNIT_BINDS_TO], i) |
b81884e7 LP |
1356 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
1357 | unit_check_unneeded(other); | |
87f0e418 LP |
1358 | } |
1359 | ||
3ecaa09b | 1360 | void unit_start_on_failure(Unit *u) { |
c0daa706 LP |
1361 | Unit *other; |
1362 | Iterator i; | |
1363 | ||
1364 | assert(u); | |
1365 | ||
ac155bb8 | 1366 | if (set_size(u->dependencies[UNIT_ON_FAILURE]) <= 0) |
222ae6a8 LP |
1367 | return; |
1368 | ||
c1b6628d | 1369 | log_info_unit(u->id, "Triggering OnFailure= dependencies of %s.", u->id); |
222ae6a8 | 1370 | |
ac155bb8 | 1371 | SET_FOREACH(other, u->dependencies[UNIT_ON_FAILURE], i) { |
222ae6a8 LP |
1372 | int r; |
1373 | ||
c1b6628d ZJS |
1374 | r = manager_add_job(u->manager, JOB_START, other, u->on_failure_isolate ? JOB_ISOLATE : JOB_REPLACE, true, NULL, NULL); |
1375 | if (r < 0) | |
1376 | log_error_unit(u->id, "Failed to enqueue OnFailure= job: %s", strerror(-r)); | |
222ae6a8 | 1377 | } |
c0daa706 LP |
1378 | } |
1379 | ||
3ecaa09b LP |
1380 | void unit_trigger_notify(Unit *u) { |
1381 | Unit *other; | |
1382 | Iterator i; | |
1383 | ||
1384 | assert(u); | |
1385 | ||
1386 | SET_FOREACH(other, u->dependencies[UNIT_TRIGGERED_BY], i) | |
1387 | if (UNIT_VTABLE(other)->trigger_notify) | |
1388 | UNIT_VTABLE(other)->trigger_notify(other, u); | |
1389 | } | |
1390 | ||
e2f3b44c | 1391 | void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_success) { |
546ac4f0 | 1392 | Manager *m; |
7e6e7b06 | 1393 | bool unexpected; |
a096ed36 | 1394 | |
87f0e418 LP |
1395 | assert(u); |
1396 | assert(os < _UNIT_ACTIVE_STATE_MAX); | |
1397 | assert(ns < _UNIT_ACTIVE_STATE_MAX); | |
87f0e418 | 1398 | |
8e471ccd LP |
1399 | /* Note that this is called for all low-level state changes, |
1400 | * even if they might map to the same high-level | |
1401 | * UnitActiveState! That means that ns == os is OK an expected | |
c5315881 | 1402 | * behavior here. For example: if a mount point is remounted |
cd6d0a45 | 1403 | * this function will be called too! */ |
87f0e418 | 1404 | |
546ac4f0 MS |
1405 | m = u->manager; |
1406 | ||
1407 | if (m->n_reloading <= 0) { | |
bdbf9951 | 1408 | dual_timestamp ts; |
173e3821 | 1409 | |
bdbf9951 | 1410 | dual_timestamp_get(&ts); |
173e3821 | 1411 | |
bdbf9951 | 1412 | if (UNIT_IS_INACTIVE_OR_FAILED(os) && !UNIT_IS_INACTIVE_OR_FAILED(ns)) |
ac155bb8 | 1413 | u->inactive_exit_timestamp = ts; |
bdbf9951 | 1414 | else if (!UNIT_IS_INACTIVE_OR_FAILED(os) && UNIT_IS_INACTIVE_OR_FAILED(ns)) |
ac155bb8 | 1415 | u->inactive_enter_timestamp = ts; |
bdbf9951 LP |
1416 | |
1417 | if (!UNIT_IS_ACTIVE_OR_RELOADING(os) && UNIT_IS_ACTIVE_OR_RELOADING(ns)) | |
ac155bb8 | 1418 | u->active_enter_timestamp = ts; |
bdbf9951 | 1419 | else if (UNIT_IS_ACTIVE_OR_RELOADING(os) && !UNIT_IS_ACTIVE_OR_RELOADING(ns)) |
ac155bb8 | 1420 | u->active_exit_timestamp = ts; |
bdbf9951 | 1421 | } |
87f0e418 | 1422 | |
fdf20a31 | 1423 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
4ad49000 | 1424 | unit_destroy_cgroup(u); |
fb385181 | 1425 | |
7ed9f6cd MS |
1426 | if (UNIT_IS_INACTIVE_OR_FAILED(os) != UNIT_IS_INACTIVE_OR_FAILED(ns)) { |
1427 | ExecContext *ec = unit_get_exec_context(u); | |
1428 | if (ec && exec_context_may_touch_console(ec)) { | |
31a7eb86 ZJS |
1429 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) { |
1430 | m->n_on_console --; | |
1431 | ||
1432 | if (m->n_on_console == 0) | |
1433 | /* unset no_console_output flag, since the console is free */ | |
1434 | m->no_console_output = 0; | |
1435 | } else | |
1436 | m->n_on_console ++; | |
7ed9f6cd MS |
1437 | } |
1438 | } | |
1439 | ||
ac155bb8 | 1440 | if (u->job) { |
7e6e7b06 | 1441 | unexpected = false; |
87f0e418 | 1442 | |
ac155bb8 | 1443 | if (u->job->state == JOB_WAITING) |
87f0e418 LP |
1444 | |
1445 | /* So we reached a different state for this | |
1446 | * job. Let's see if we can run it now if it | |
1447 | * failed previously due to EAGAIN. */ | |
ac155bb8 | 1448 | job_add_to_run_queue(u->job); |
87f0e418 | 1449 | |
b410e6b9 | 1450 | /* Let's check whether this state change constitutes a |
35b8ca3a | 1451 | * finished job, or maybe contradicts a running job and |
b410e6b9 | 1452 | * hence needs to invalidate jobs. */ |
87f0e418 | 1453 | |
ac155bb8 | 1454 | switch (u->job->type) { |
87f0e418 | 1455 | |
b410e6b9 LP |
1456 | case JOB_START: |
1457 | case JOB_VERIFY_ACTIVE: | |
87f0e418 | 1458 | |
b410e6b9 | 1459 | if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) |
5273510e | 1460 | job_finish_and_invalidate(u->job, JOB_DONE, true); |
ac155bb8 | 1461 | else if (u->job->state == JOB_RUNNING && ns != UNIT_ACTIVATING) { |
b410e6b9 | 1462 | unexpected = true; |
41b02ec7 | 1463 | |
fdf20a31 | 1464 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
5273510e | 1465 | job_finish_and_invalidate(u->job, ns == UNIT_FAILED ? JOB_FAILED : JOB_DONE, true); |
b410e6b9 | 1466 | } |
87f0e418 | 1467 | |
b410e6b9 | 1468 | break; |
87f0e418 | 1469 | |
b410e6b9 LP |
1470 | case JOB_RELOAD: |
1471 | case JOB_RELOAD_OR_START: | |
87f0e418 | 1472 | |
ac155bb8 | 1473 | if (u->job->state == JOB_RUNNING) { |
a096ed36 | 1474 | if (ns == UNIT_ACTIVE) |
5273510e | 1475 | job_finish_and_invalidate(u->job, reload_success ? JOB_DONE : JOB_FAILED, true); |
032ff4af | 1476 | else if (ns != UNIT_ACTIVATING && ns != UNIT_RELOADING) { |
a096ed36 | 1477 | unexpected = true; |
41b02ec7 | 1478 | |
fdf20a31 | 1479 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
5273510e | 1480 | job_finish_and_invalidate(u->job, ns == UNIT_FAILED ? JOB_FAILED : JOB_DONE, true); |
a096ed36 | 1481 | } |
b410e6b9 | 1482 | } |
87f0e418 | 1483 | |
b410e6b9 | 1484 | break; |
87f0e418 | 1485 | |
b410e6b9 LP |
1486 | case JOB_STOP: |
1487 | case JOB_RESTART: | |
1488 | case JOB_TRY_RESTART: | |
87f0e418 | 1489 | |
fdf20a31 | 1490 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
5273510e | 1491 | job_finish_and_invalidate(u->job, JOB_DONE, true); |
ac155bb8 | 1492 | else if (u->job->state == JOB_RUNNING && ns != UNIT_DEACTIVATING) { |
b410e6b9 | 1493 | unexpected = true; |
5273510e | 1494 | job_finish_and_invalidate(u->job, JOB_FAILED, true); |
b410e6b9 | 1495 | } |
87f0e418 | 1496 | |
b410e6b9 | 1497 | break; |
87f0e418 | 1498 | |
b410e6b9 LP |
1499 | default: |
1500 | assert_not_reached("Job type unknown"); | |
87f0e418 | 1501 | } |
87f0e418 | 1502 | |
7e6e7b06 LP |
1503 | } else |
1504 | unexpected = true; | |
1505 | ||
546ac4f0 | 1506 | if (m->n_reloading <= 0) { |
f3bff0eb | 1507 | |
bdbf9951 LP |
1508 | /* If this state change happened without being |
1509 | * requested by a job, then let's retroactively start | |
1510 | * or stop dependencies. We skip that step when | |
1511 | * deserializing, since we don't want to create any | |
1512 | * additional jobs just because something is already | |
1513 | * activated. */ | |
1514 | ||
1515 | if (unexpected) { | |
1516 | if (UNIT_IS_INACTIVE_OR_FAILED(os) && UNIT_IS_ACTIVE_OR_ACTIVATING(ns)) | |
1517 | retroactively_start_dependencies(u); | |
1518 | else if (UNIT_IS_ACTIVE_OR_ACTIVATING(os) && UNIT_IS_INACTIVE_OR_DEACTIVATING(ns)) | |
1519 | retroactively_stop_dependencies(u); | |
1520 | } | |
5de9682c | 1521 | |
cd0504d0 MS |
1522 | /* stop unneeded units regardless if going down was expected or not */ |
1523 | if (UNIT_IS_ACTIVE_OR_ACTIVATING(os) && UNIT_IS_INACTIVE_OR_DEACTIVATING(ns)) | |
1524 | check_unneeded_dependencies(u); | |
1525 | ||
bdbf9951 | 1526 | if (ns != os && ns == UNIT_FAILED) { |
c1b6628d | 1527 | log_notice_unit(u->id, |
fcf8c440 | 1528 | "Unit %s entered failed state.", u->id); |
3ecaa09b | 1529 | unit_start_on_failure(u); |
cd6d0a45 | 1530 | } |
3b2775c5 | 1531 | } |
e537352b | 1532 | |
3b2775c5 LP |
1533 | /* Some names are special */ |
1534 | if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) { | |
1535 | ||
1536 | if (unit_has_name(u, SPECIAL_DBUS_SERVICE)) | |
1537 | /* The bus just might have become available, | |
1538 | * hence try to connect to it, if we aren't | |
1539 | * yet connected. */ | |
546ac4f0 | 1540 | bus_init(m, true); |
3b2775c5 | 1541 | |
ac155bb8 | 1542 | if (u->type == UNIT_SERVICE && |
3b2775c5 | 1543 | !UNIT_IS_ACTIVE_OR_RELOADING(os) && |
546ac4f0 | 1544 | m->n_reloading <= 0) { |
3b2775c5 | 1545 | /* Write audit record if we have just finished starting up */ |
546ac4f0 | 1546 | manager_send_unit_audit(m, u, AUDIT_SERVICE_START, true); |
ac155bb8 | 1547 | u->in_audit = true; |
3b2775c5 | 1548 | } |
e983b760 | 1549 | |
3b2775c5 | 1550 | if (!UNIT_IS_ACTIVE_OR_RELOADING(os)) |
546ac4f0 | 1551 | manager_send_unit_plymouth(m, u); |
bdbf9951 | 1552 | |
3b2775c5 | 1553 | } else { |
bdbf9951 | 1554 | |
3b2775c5 LP |
1555 | /* We don't care about D-Bus here, since we'll get an |
1556 | * asynchronous notification for it anyway. */ | |
cd6d0a45 | 1557 | |
ac155bb8 | 1558 | if (u->type == UNIT_SERVICE && |
3b2775c5 LP |
1559 | UNIT_IS_INACTIVE_OR_FAILED(ns) && |
1560 | !UNIT_IS_INACTIVE_OR_FAILED(os) && | |
546ac4f0 | 1561 | m->n_reloading <= 0) { |
4927fcae | 1562 | |
3b2775c5 LP |
1563 | /* Hmm, if there was no start record written |
1564 | * write it now, so that we always have a nice | |
1565 | * pair */ | |
ac155bb8 | 1566 | if (!u->in_audit) { |
546ac4f0 | 1567 | manager_send_unit_audit(m, u, AUDIT_SERVICE_START, ns == UNIT_INACTIVE); |
cd6d0a45 | 1568 | |
3b2775c5 | 1569 | if (ns == UNIT_INACTIVE) |
546ac4f0 | 1570 | manager_send_unit_audit(m, u, AUDIT_SERVICE_STOP, true); |
3b2775c5 LP |
1571 | } else |
1572 | /* Write audit record if we have just finished shutting down */ | |
546ac4f0 | 1573 | manager_send_unit_audit(m, u, AUDIT_SERVICE_STOP, ns == UNIT_INACTIVE); |
bdbf9951 | 1574 | |
ac155bb8 | 1575 | u->in_audit = false; |
cd6d0a45 | 1576 | } |
f278026d LP |
1577 | } |
1578 | ||
546ac4f0 | 1579 | manager_recheck_journal(m); |
3ecaa09b | 1580 | unit_trigger_notify(u); |
3b2775c5 | 1581 | |
f3bff0eb LP |
1582 | /* Maybe we finished startup and are now ready for being |
1583 | * stopped because unneeded? */ | |
bf6dcfa6 OS |
1584 | if (u->manager->n_reloading <= 0) |
1585 | unit_check_unneeded(u); | |
c1e1601e LP |
1586 | |
1587 | unit_add_to_dbus_queue(u); | |
701cc384 | 1588 | unit_add_to_gc_queue(u); |
87f0e418 LP |
1589 | } |
1590 | ||
acbb0225 | 1591 | int unit_watch_fd(Unit *u, int fd, uint32_t events, Watch *w) { |
b92bea5d ZJS |
1592 | struct epoll_event ev = { |
1593 | .data.ptr = w, | |
1594 | .events = events, | |
1595 | }; | |
87f0e418 LP |
1596 | |
1597 | assert(u); | |
1598 | assert(fd >= 0); | |
acbb0225 | 1599 | assert(w); |
ea430986 | 1600 | assert(w->type == WATCH_INVALID || (w->type == WATCH_FD && w->fd == fd && w->data.unit == u)); |
87f0e418 | 1601 | |
ac155bb8 | 1602 | if (epoll_ctl(u->manager->epoll_fd, |
acbb0225 LP |
1603 | w->type == WATCH_INVALID ? EPOLL_CTL_ADD : EPOLL_CTL_MOD, |
1604 | fd, | |
1605 | &ev) < 0) | |
1606 | return -errno; | |
87f0e418 | 1607 | |
acbb0225 LP |
1608 | w->fd = fd; |
1609 | w->type = WATCH_FD; | |
ea430986 | 1610 | w->data.unit = u; |
87f0e418 | 1611 | |
acbb0225 | 1612 | return 0; |
87f0e418 LP |
1613 | } |
1614 | ||
acbb0225 | 1615 | void unit_unwatch_fd(Unit *u, Watch *w) { |
87f0e418 | 1616 | assert(u); |
acbb0225 | 1617 | assert(w); |
87f0e418 | 1618 | |
acbb0225 LP |
1619 | if (w->type == WATCH_INVALID) |
1620 | return; | |
1621 | ||
ea430986 LP |
1622 | assert(w->type == WATCH_FD); |
1623 | assert(w->data.unit == u); | |
ac155bb8 | 1624 | assert_se(epoll_ctl(u->manager->epoll_fd, EPOLL_CTL_DEL, w->fd, NULL) >= 0); |
acbb0225 LP |
1625 | |
1626 | w->fd = -1; | |
1627 | w->type = WATCH_INVALID; | |
ea430986 | 1628 | w->data.unit = NULL; |
87f0e418 LP |
1629 | } |
1630 | ||
1631 | int unit_watch_pid(Unit *u, pid_t pid) { | |
1632 | assert(u); | |
1633 | assert(pid >= 1); | |
1634 | ||
05e343b7 LP |
1635 | /* Watch a specific PID. We only support one unit watching |
1636 | * each PID for now. */ | |
1637 | ||
ac155bb8 | 1638 | return hashmap_put(u->manager->watch_pids, LONG_TO_PTR(pid), u); |
87f0e418 LP |
1639 | } |
1640 | ||
1641 | void unit_unwatch_pid(Unit *u, pid_t pid) { | |
1642 | assert(u); | |
1643 | assert(pid >= 1); | |
1644 | ||
ac155bb8 | 1645 | hashmap_remove_value(u->manager->watch_pids, LONG_TO_PTR(pid), u); |
87f0e418 LP |
1646 | } |
1647 | ||
36697dc0 | 1648 | int unit_watch_timer(Unit *u, clockid_t clock_id, bool relative, usec_t usec, Watch *w) { |
b92bea5d | 1649 | struct itimerspec its = {}; |
acbb0225 | 1650 | int flags, fd; |
87f0e418 LP |
1651 | bool ours; |
1652 | ||
1653 | assert(u); | |
acbb0225 | 1654 | assert(w); |
faf919f1 | 1655 | assert(w->type == WATCH_INVALID || (w->type == WATCH_UNIT_TIMER && w->data.unit == u)); |
87f0e418 LP |
1656 | |
1657 | /* This will try to reuse the old timer if there is one */ | |
1658 | ||
faf919f1 LP |
1659 | if (w->type == WATCH_UNIT_TIMER) { |
1660 | assert(w->data.unit == u); | |
1661 | assert(w->fd >= 0); | |
1662 | ||
87f0e418 | 1663 | ours = false; |
acbb0225 | 1664 | fd = w->fd; |
faf919f1 LP |
1665 | } else if (w->type == WATCH_INVALID) { |
1666 | ||
87f0e418 | 1667 | ours = true; |
36697dc0 | 1668 | fd = timerfd_create(clock_id, TFD_NONBLOCK|TFD_CLOEXEC); |
68b29a9f | 1669 | if (fd < 0) |
87f0e418 | 1670 | return -errno; |
faf919f1 LP |
1671 | } else |
1672 | assert_not_reached("Invalid watch type"); | |
87f0e418 | 1673 | |
36697dc0 | 1674 | if (usec <= 0) { |
87f0e418 LP |
1675 | /* Set absolute time in the past, but not 0, since we |
1676 | * don't want to disarm the timer */ | |
1677 | its.it_value.tv_sec = 0; | |
1678 | its.it_value.tv_nsec = 1; | |
1679 | ||
1680 | flags = TFD_TIMER_ABSTIME; | |
1681 | } else { | |
36697dc0 LP |
1682 | timespec_store(&its.it_value, usec); |
1683 | flags = relative ? 0 : TFD_TIMER_ABSTIME; | |
87f0e418 LP |
1684 | } |
1685 | ||
1686 | /* This will also flush the elapse counter */ | |
1687 | if (timerfd_settime(fd, flags, &its, NULL) < 0) | |
1688 | goto fail; | |
1689 | ||
acbb0225 | 1690 | if (w->type == WATCH_INVALID) { |
b92bea5d ZJS |
1691 | struct epoll_event ev = { |
1692 | .data.ptr = w, | |
1693 | .events = EPOLLIN, | |
1694 | }; | |
acbb0225 | 1695 | |
ac155bb8 | 1696 | if (epoll_ctl(u->manager->epoll_fd, EPOLL_CTL_ADD, fd, &ev) < 0) |
acbb0225 LP |
1697 | goto fail; |
1698 | } | |
1699 | ||
faf919f1 | 1700 | w->type = WATCH_UNIT_TIMER; |
acbb0225 | 1701 | w->fd = fd; |
ea430986 | 1702 | w->data.unit = u; |
87f0e418 | 1703 | |
87f0e418 LP |
1704 | return 0; |
1705 | ||
1706 | fail: | |
1707 | if (ours) | |
ea430986 | 1708 | close_nointr_nofail(fd); |
87f0e418 LP |
1709 | |
1710 | return -errno; | |
1711 | } | |
1712 | ||
acbb0225 | 1713 | void unit_unwatch_timer(Unit *u, Watch *w) { |
87f0e418 | 1714 | assert(u); |
acbb0225 | 1715 | assert(w); |
87f0e418 | 1716 | |
acbb0225 | 1717 | if (w->type == WATCH_INVALID) |
87f0e418 LP |
1718 | return; |
1719 | ||
faf919f1 LP |
1720 | assert(w->type == WATCH_UNIT_TIMER); |
1721 | assert(w->data.unit == u); | |
1722 | assert(w->fd >= 0); | |
acbb0225 | 1723 | |
ac155bb8 | 1724 | assert_se(epoll_ctl(u->manager->epoll_fd, EPOLL_CTL_DEL, w->fd, NULL) >= 0); |
a16e1123 | 1725 | close_nointr_nofail(w->fd); |
acbb0225 LP |
1726 | |
1727 | w->fd = -1; | |
1728 | w->type = WATCH_INVALID; | |
ea430986 | 1729 | w->data.unit = NULL; |
87f0e418 LP |
1730 | } |
1731 | ||
1732 | bool unit_job_is_applicable(Unit *u, JobType j) { | |
1733 | assert(u); | |
1734 | assert(j >= 0 && j < _JOB_TYPE_MAX); | |
1735 | ||
1736 | switch (j) { | |
1737 | ||
1738 | case JOB_VERIFY_ACTIVE: | |
1739 | case JOB_START: | |
57339f47 | 1740 | case JOB_STOP: |
e0209d83 | 1741 | case JOB_NOP: |
87f0e418 LP |
1742 | return true; |
1743 | ||
87f0e418 LP |
1744 | case JOB_RESTART: |
1745 | case JOB_TRY_RESTART: | |
1746 | return unit_can_start(u); | |
1747 | ||
1748 | case JOB_RELOAD: | |
1749 | return unit_can_reload(u); | |
1750 | ||
1751 | case JOB_RELOAD_OR_START: | |
1752 | return unit_can_reload(u) && unit_can_start(u); | |
1753 | ||
1754 | default: | |
1755 | assert_not_reached("Invalid job type"); | |
1756 | } | |
1757 | } | |
1758 | ||
701cc384 | 1759 | int unit_add_dependency(Unit *u, UnitDependency d, Unit *other, bool add_reference) { |
87f0e418 LP |
1760 | |
1761 | static const UnitDependency inverse_table[_UNIT_DEPENDENCY_MAX] = { | |
1762 | [UNIT_REQUIRES] = UNIT_REQUIRED_BY, | |
9e2f7c11 | 1763 | [UNIT_REQUIRES_OVERRIDABLE] = UNIT_REQUIRED_BY_OVERRIDABLE, |
87f0e418 LP |
1764 | [UNIT_WANTS] = UNIT_WANTED_BY, |
1765 | [UNIT_REQUISITE] = UNIT_REQUIRED_BY, | |
9e2f7c11 | 1766 | [UNIT_REQUISITE_OVERRIDABLE] = UNIT_REQUIRED_BY_OVERRIDABLE, |
7f2cddae | 1767 | [UNIT_BINDS_TO] = UNIT_BOUND_BY, |
60649f17 | 1768 | [UNIT_PART_OF] = UNIT_CONSISTS_OF, |
87f0e418 | 1769 | [UNIT_REQUIRED_BY] = _UNIT_DEPENDENCY_INVALID, |
9e2f7c11 | 1770 | [UNIT_REQUIRED_BY_OVERRIDABLE] = _UNIT_DEPENDENCY_INVALID, |
87f0e418 | 1771 | [UNIT_WANTED_BY] = _UNIT_DEPENDENCY_INVALID, |
7f2cddae | 1772 | [UNIT_BOUND_BY] = UNIT_BINDS_TO, |
60649f17 | 1773 | [UNIT_CONSISTS_OF] = UNIT_PART_OF, |
69dd2852 LP |
1774 | [UNIT_CONFLICTS] = UNIT_CONFLICTED_BY, |
1775 | [UNIT_CONFLICTED_BY] = UNIT_CONFLICTS, | |
87f0e418 | 1776 | [UNIT_BEFORE] = UNIT_AFTER, |
701cc384 | 1777 | [UNIT_AFTER] = UNIT_BEFORE, |
5de9682c | 1778 | [UNIT_ON_FAILURE] = _UNIT_DEPENDENCY_INVALID, |
701cc384 | 1779 | [UNIT_REFERENCES] = UNIT_REFERENCED_BY, |
57020a3a LP |
1780 | [UNIT_REFERENCED_BY] = UNIT_REFERENCES, |
1781 | [UNIT_TRIGGERS] = UNIT_TRIGGERED_BY, | |
4dcc1cb4 | 1782 | [UNIT_TRIGGERED_BY] = UNIT_TRIGGERS, |
7f2cddae | 1783 | [UNIT_PROPAGATES_RELOAD_TO] = UNIT_RELOAD_PROPAGATED_FROM, |
85e9a101 | 1784 | [UNIT_RELOAD_PROPAGATED_FROM] = UNIT_PROPAGATES_RELOAD_TO, |
87f0e418 | 1785 | }; |
701cc384 | 1786 | int r, q = 0, v = 0, w = 0; |
87f0e418 LP |
1787 | |
1788 | assert(u); | |
1789 | assert(d >= 0 && d < _UNIT_DEPENDENCY_MAX); | |
87f0e418 LP |
1790 | assert(other); |
1791 | ||
9f151f29 LP |
1792 | u = unit_follow_merge(u); |
1793 | other = unit_follow_merge(other); | |
1794 | ||
87f0e418 LP |
1795 | /* We won't allow dependencies on ourselves. We will not |
1796 | * consider them an error however. */ | |
1797 | if (u == other) | |
1798 | return 0; | |
1799 | ||
ac155bb8 | 1800 | if ((r = set_ensure_allocated(&u->dependencies[d], trivial_hash_func, trivial_compare_func)) < 0) |
87f0e418 LP |
1801 | return r; |
1802 | ||
5de9682c | 1803 | if (inverse_table[d] != _UNIT_DEPENDENCY_INVALID) |
ac155bb8 | 1804 | if ((r = set_ensure_allocated(&other->dependencies[inverse_table[d]], trivial_hash_func, trivial_compare_func)) < 0) |
5de9682c LP |
1805 | return r; |
1806 | ||
701cc384 | 1807 | if (add_reference) |
ac155bb8 MS |
1808 | if ((r = set_ensure_allocated(&u->dependencies[UNIT_REFERENCES], trivial_hash_func, trivial_compare_func)) < 0 || |
1809 | (r = set_ensure_allocated(&other->dependencies[UNIT_REFERENCED_BY], trivial_hash_func, trivial_compare_func)) < 0) | |
701cc384 | 1810 | return r; |
87f0e418 | 1811 | |
ac155bb8 | 1812 | if ((q = set_put(u->dependencies[d], other)) < 0) |
701cc384 | 1813 | return q; |
87f0e418 | 1814 | |
5de9682c | 1815 | if (inverse_table[d] != _UNIT_DEPENDENCY_INVALID) |
ac155bb8 | 1816 | if ((v = set_put(other->dependencies[inverse_table[d]], u)) < 0) { |
5de9682c LP |
1817 | r = v; |
1818 | goto fail; | |
1819 | } | |
701cc384 LP |
1820 | |
1821 | if (add_reference) { | |
ac155bb8 | 1822 | if ((w = set_put(u->dependencies[UNIT_REFERENCES], other)) < 0) { |
701cc384 LP |
1823 | r = w; |
1824 | goto fail; | |
1825 | } | |
1826 | ||
ac155bb8 | 1827 | if ((r = set_put(other->dependencies[UNIT_REFERENCED_BY], u)) < 0) |
701cc384 | 1828 | goto fail; |
87f0e418 LP |
1829 | } |
1830 | ||
c1e1601e | 1831 | unit_add_to_dbus_queue(u); |
87f0e418 | 1832 | return 0; |
701cc384 LP |
1833 | |
1834 | fail: | |
1835 | if (q > 0) | |
ac155bb8 | 1836 | set_remove(u->dependencies[d], other); |
701cc384 LP |
1837 | |
1838 | if (v > 0) | |
ac155bb8 | 1839 | set_remove(other->dependencies[inverse_table[d]], u); |
701cc384 LP |
1840 | |
1841 | if (w > 0) | |
ac155bb8 | 1842 | set_remove(u->dependencies[UNIT_REFERENCES], other); |
701cc384 LP |
1843 | |
1844 | return r; | |
87f0e418 | 1845 | } |
0301abf4 | 1846 | |
2c966c03 LP |
1847 | int unit_add_two_dependencies(Unit *u, UnitDependency d, UnitDependency e, Unit *other, bool add_reference) { |
1848 | int r; | |
1849 | ||
1850 | assert(u); | |
1851 | ||
1852 | if ((r = unit_add_dependency(u, d, other, add_reference)) < 0) | |
1853 | return r; | |
1854 | ||
1855 | if ((r = unit_add_dependency(u, e, other, add_reference)) < 0) | |
1856 | return r; | |
1857 | ||
1858 | return 0; | |
1859 | } | |
1860 | ||
9e2f7c11 LP |
1861 | static const char *resolve_template(Unit *u, const char *name, const char*path, char **p) { |
1862 | char *s; | |
1863 | ||
1864 | assert(u); | |
1865 | assert(name || path); | |
8afbb8e1 | 1866 | assert(p); |
9e2f7c11 LP |
1867 | |
1868 | if (!name) | |
9eb977db | 1869 | name = path_get_file_name(path); |
9e2f7c11 LP |
1870 | |
1871 | if (!unit_name_is_template(name)) { | |
1872 | *p = NULL; | |
1873 | return name; | |
1874 | } | |
1875 | ||
ac155bb8 MS |
1876 | if (u->instance) |
1877 | s = unit_name_replace_instance(name, u->instance); | |
9e2f7c11 | 1878 | else { |
ae018d9b | 1879 | _cleanup_free_ char *i = NULL; |
9e2f7c11 | 1880 | |
8afbb8e1 LP |
1881 | i = unit_name_to_prefix(u->id); |
1882 | if (!i) | |
9e2f7c11 LP |
1883 | return NULL; |
1884 | ||
1885 | s = unit_name_replace_instance(name, i); | |
9e2f7c11 LP |
1886 | } |
1887 | ||
1888 | if (!s) | |
1889 | return NULL; | |
1890 | ||
1891 | *p = s; | |
1892 | return s; | |
1893 | } | |
1894 | ||
701cc384 | 1895 | int unit_add_dependency_by_name(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) { |
09b6b09f LP |
1896 | Unit *other; |
1897 | int r; | |
8afbb8e1 | 1898 | _cleanup_free_ char *s = NULL; |
09b6b09f | 1899 | |
9e2f7c11 LP |
1900 | assert(u); |
1901 | assert(name || path); | |
09b6b09f | 1902 | |
8afbb8e1 LP |
1903 | name = resolve_template(u, name, path, &s); |
1904 | if (!name) | |
9e2f7c11 | 1905 | return -ENOMEM; |
09b6b09f | 1906 | |
8afbb8e1 LP |
1907 | r = manager_load_unit(u->manager, name, path, NULL, &other); |
1908 | if (r < 0) | |
1909 | return r; | |
9e2f7c11 | 1910 | |
8afbb8e1 | 1911 | return unit_add_dependency(u, d, other, add_reference); |
09b6b09f LP |
1912 | } |
1913 | ||
2c966c03 LP |
1914 | int unit_add_two_dependencies_by_name(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference) { |
1915 | Unit *other; | |
1916 | int r; | |
1917 | char *s; | |
1918 | ||
1919 | assert(u); | |
1920 | assert(name || path); | |
1921 | ||
1922 | if (!(name = resolve_template(u, name, path, &s))) | |
1923 | return -ENOMEM; | |
1924 | ||
ac155bb8 | 1925 | if ((r = manager_load_unit(u->manager, name, path, NULL, &other)) < 0) |
2c966c03 LP |
1926 | goto finish; |
1927 | ||
1928 | r = unit_add_two_dependencies(u, d, e, other, add_reference); | |
1929 | ||
1930 | finish: | |
1931 | free(s); | |
1932 | return r; | |
1933 | } | |
1934 | ||
701cc384 | 1935 | int unit_add_dependency_by_name_inverse(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) { |
bd77d0fc LP |
1936 | Unit *other; |
1937 | int r; | |
9e2f7c11 | 1938 | char *s; |
bd77d0fc | 1939 | |
9e2f7c11 LP |
1940 | assert(u); |
1941 | assert(name || path); | |
bd77d0fc | 1942 | |
9e2f7c11 LP |
1943 | if (!(name = resolve_template(u, name, path, &s))) |
1944 | return -ENOMEM; | |
bd77d0fc | 1945 | |
ac155bb8 | 1946 | if ((r = manager_load_unit(u->manager, name, path, NULL, &other)) < 0) |
9e2f7c11 LP |
1947 | goto finish; |
1948 | ||
701cc384 | 1949 | r = unit_add_dependency(other, d, u, add_reference); |
9e2f7c11 LP |
1950 | |
1951 | finish: | |
1952 | free(s); | |
1953 | return r; | |
bd77d0fc LP |
1954 | } |
1955 | ||
2c966c03 LP |
1956 | int unit_add_two_dependencies_by_name_inverse(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference) { |
1957 | Unit *other; | |
1958 | int r; | |
1959 | char *s; | |
1960 | ||
1961 | assert(u); | |
1962 | assert(name || path); | |
1963 | ||
1964 | if (!(name = resolve_template(u, name, path, &s))) | |
1965 | return -ENOMEM; | |
1966 | ||
ac155bb8 | 1967 | if ((r = manager_load_unit(u->manager, name, path, NULL, &other)) < 0) |
2c966c03 LP |
1968 | goto finish; |
1969 | ||
1970 | if ((r = unit_add_two_dependencies(other, d, e, u, add_reference)) < 0) | |
1971 | goto finish; | |
1972 | ||
1973 | finish: | |
1974 | free(s); | |
1975 | return r; | |
1976 | } | |
1977 | ||
0301abf4 | 1978 | int set_unit_path(const char *p) { |
26d04f86 | 1979 | _cleanup_free_ char *c = NULL; |
0301abf4 LP |
1980 | |
1981 | /* This is mostly for debug purposes */ | |
26d04f86 LP |
1982 | c = path_make_absolute_cwd(p); |
1983 | if (setenv("SYSTEMD_UNIT_PATH", c, 0) < 0) | |
1984 | return -errno; | |
0301abf4 LP |
1985 | |
1986 | return 0; | |
1987 | } | |
88066b3a | 1988 | |
ea430986 | 1989 | char *unit_dbus_path(Unit *u) { |
ea430986 LP |
1990 | assert(u); |
1991 | ||
ac155bb8 | 1992 | if (!u->id) |
04ade7d2 LP |
1993 | return NULL; |
1994 | ||
48899192 | 1995 | return unit_dbus_path_from_name(u->id); |
ea430986 LP |
1996 | } |
1997 | ||
41f9172f | 1998 | char *unit_default_cgroup_path(Unit *u) { |
d7bd3de0 | 1999 | _cleanup_free_ char *escaped = NULL, *slice = NULL; |
a016b922 | 2000 | int r; |
5954c074 | 2001 | |
013b87c0 LP |
2002 | assert(u); |
2003 | ||
4ad49000 LP |
2004 | if (unit_has_name(u, SPECIAL_ROOT_SLICE)) |
2005 | return strdup(u->manager->cgroup_root); | |
2006 | ||
2007 | if (UNIT_ISSET(u->slice) && !unit_has_name(UNIT_DEREF(u->slice), SPECIAL_ROOT_SLICE)) { | |
a016b922 LP |
2008 | r = cg_slice_to_path(UNIT_DEREF(u->slice)->id, &slice); |
2009 | if (r < 0) | |
2010 | return NULL; | |
2011 | } | |
2012 | ||
d7bd3de0 LP |
2013 | escaped = cg_escape(u->id); |
2014 | if (!escaped) | |
5954c074 LP |
2015 | return NULL; |
2016 | ||
d7bd3de0 LP |
2017 | if (slice) |
2018 | return strjoin(u->manager->cgroup_root, "/", slice, "/", escaped, NULL); | |
2019 | else | |
2020 | return strjoin(u->manager->cgroup_root, "/", escaped, NULL); | |
013b87c0 LP |
2021 | } |
2022 | ||
a016b922 | 2023 | int unit_add_default_slice(Unit *u) { |
a8833944 LP |
2024 | _cleanup_free_ char *b = NULL; |
2025 | const char *slice_name; | |
a016b922 LP |
2026 | Unit *slice; |
2027 | int r; | |
2028 | ||
2029 | assert(u); | |
2030 | ||
9444b1f2 | 2031 | if (UNIT_ISSET(u->slice)) |
a016b922 LP |
2032 | return 0; |
2033 | ||
4ad49000 | 2034 | if (!unit_get_cgroup_context(u)) |
a016b922 LP |
2035 | return 0; |
2036 | ||
a8833944 LP |
2037 | if (u->instance) { |
2038 | _cleanup_free_ char *prefix = NULL, *escaped = NULL; | |
2039 | ; | |
2040 | /* Implicitly place all instantiated units in their | |
2041 | * own per-template slice */ | |
2042 | ||
2043 | prefix = unit_name_to_prefix(u->id); | |
2044 | if (!prefix) | |
2045 | return -ENOMEM; | |
2046 | ||
2047 | /* The prefix is already escaped, but it might include | |
2048 | * "-" which has a special meaning for slice units, | |
2049 | * hence escape it here extra. */ | |
2050 | escaped = strreplace(prefix, "-", "\\x2d"); | |
2051 | if (!escaped) | |
2052 | return -ENOMEM; | |
2053 | ||
2054 | if (u->manager->running_as == SYSTEMD_SYSTEM) | |
2055 | b = strjoin("system-", escaped, ".slice", NULL); | |
2056 | else | |
2057 | b = strappend(escaped, ".slice"); | |
2058 | if (!b) | |
2059 | return -ENOMEM; | |
2060 | ||
2061 | slice_name = b; | |
2062 | } else | |
2063 | slice_name = | |
2064 | u->manager->running_as == SYSTEMD_SYSTEM | |
2065 | ? SPECIAL_SYSTEM_SLICE | |
2066 | : SPECIAL_ROOT_SLICE; | |
2067 | ||
2068 | r = manager_load_unit(u->manager, slice_name, NULL, NULL, &slice); | |
a016b922 LP |
2069 | if (r < 0) |
2070 | return r; | |
2071 | ||
2072 | unit_ref_set(&u->slice, slice); | |
2073 | return 0; | |
2074 | } | |
2075 | ||
9444b1f2 LP |
2076 | const char *unit_slice_name(Unit *u) { |
2077 | assert(u); | |
2078 | ||
2079 | if (!UNIT_ISSET(u->slice)) | |
2080 | return NULL; | |
2081 | ||
2082 | return UNIT_DEREF(u->slice)->id; | |
2083 | } | |
2084 | ||
f6ff8c29 | 2085 | int unit_load_related_unit(Unit *u, const char *type, Unit **_found) { |
78edb35a | 2086 | _cleanup_free_ char *t = NULL; |
f6ff8c29 LP |
2087 | int r; |
2088 | ||
2089 | assert(u); | |
2090 | assert(type); | |
2091 | assert(_found); | |
2092 | ||
78edb35a LP |
2093 | t = unit_name_change_suffix(u->id, type); |
2094 | if (!t) | |
f6ff8c29 LP |
2095 | return -ENOMEM; |
2096 | ||
2097 | assert(!unit_has_name(u, t)); | |
2098 | ||
ac155bb8 | 2099 | r = manager_load_unit(u->manager, t, NULL, NULL, _found); |
9e2f7c11 | 2100 | assert(r < 0 || *_found != u); |
f6ff8c29 LP |
2101 | return r; |
2102 | } | |
2103 | ||
a16e1123 | 2104 | int unit_get_related_unit(Unit *u, const char *type, Unit **_found) { |
78edb35a | 2105 | _cleanup_free_ char *t = NULL; |
a16e1123 | 2106 | Unit *found; |
a16e1123 LP |
2107 | |
2108 | assert(u); | |
2109 | assert(type); | |
2110 | assert(_found); | |
2111 | ||
78edb35a LP |
2112 | t = unit_name_change_suffix(u->id, type); |
2113 | if (!t) | |
a16e1123 LP |
2114 | return -ENOMEM; |
2115 | ||
2116 | assert(!unit_has_name(u, t)); | |
2117 | ||
ac155bb8 | 2118 | found = manager_get_unit(u->manager, t); |
a16e1123 LP |
2119 | if (!found) |
2120 | return -ENOENT; | |
2121 | ||
2122 | *_found = found; | |
2123 | return 0; | |
2124 | } | |
2125 | ||
05e343b7 LP |
2126 | int unit_watch_bus_name(Unit *u, const char *name) { |
2127 | assert(u); | |
2128 | assert(name); | |
2129 | ||
2130 | /* Watch a specific name on the bus. We only support one unit | |
2131 | * watching each name for now. */ | |
2132 | ||
ac155bb8 | 2133 | return hashmap_put(u->manager->watch_bus, name, u); |
05e343b7 LP |
2134 | } |
2135 | ||
2136 | void unit_unwatch_bus_name(Unit *u, const char *name) { | |
2137 | assert(u); | |
2138 | assert(name); | |
2139 | ||
ac155bb8 | 2140 | hashmap_remove_value(u->manager->watch_bus, name, u); |
05e343b7 LP |
2141 | } |
2142 | ||
a16e1123 LP |
2143 | bool unit_can_serialize(Unit *u) { |
2144 | assert(u); | |
2145 | ||
2146 | return UNIT_VTABLE(u)->serialize && UNIT_VTABLE(u)->deserialize_item; | |
2147 | } | |
2148 | ||
6b78f9b4 | 2149 | int unit_serialize(Unit *u, FILE *f, FDSet *fds, bool serialize_jobs) { |
a16e1123 LP |
2150 | int r; |
2151 | ||
2152 | assert(u); | |
2153 | assert(f); | |
2154 | assert(fds); | |
2155 | ||
2156 | if (!unit_can_serialize(u)) | |
2157 | return 0; | |
2158 | ||
6fa48533 LP |
2159 | r = UNIT_VTABLE(u)->serialize(u, f, fds); |
2160 | if (r < 0) | |
a16e1123 LP |
2161 | return r; |
2162 | ||
cca098b0 | 2163 | |
6b78f9b4 LP |
2164 | if (serialize_jobs) { |
2165 | if (u->job) { | |
2166 | fprintf(f, "job\n"); | |
2167 | job_serialize(u->job, f, fds); | |
2168 | } | |
2169 | ||
2170 | if (u->nop_job) { | |
2171 | fprintf(f, "job\n"); | |
2172 | job_serialize(u->nop_job, f, fds); | |
2173 | } | |
e0209d83 MS |
2174 | } |
2175 | ||
ac155bb8 MS |
2176 | dual_timestamp_serialize(f, "inactive-exit-timestamp", &u->inactive_exit_timestamp); |
2177 | dual_timestamp_serialize(f, "active-enter-timestamp", &u->active_enter_timestamp); | |
2178 | dual_timestamp_serialize(f, "active-exit-timestamp", &u->active_exit_timestamp); | |
2179 | dual_timestamp_serialize(f, "inactive-enter-timestamp", &u->inactive_enter_timestamp); | |
2180 | dual_timestamp_serialize(f, "condition-timestamp", &u->condition_timestamp); | |
2791a8f8 | 2181 | |
ac155bb8 MS |
2182 | if (dual_timestamp_is_set(&u->condition_timestamp)) |
2183 | unit_serialize_item(u, f, "condition-result", yes_no(u->condition_result)); | |
10717a1a | 2184 | |
c2756a68 LP |
2185 | unit_serialize_item(u, f, "transient", yes_no(u->transient)); |
2186 | ||
2187 | if (u->cgroup_path) | |
2188 | unit_serialize_item(u, f, "cgroup", u->cgroup_path); | |
2189 | ||
a16e1123 LP |
2190 | /* End marker */ |
2191 | fputc('\n', f); | |
2192 | return 0; | |
2193 | } | |
2194 | ||
2195 | void unit_serialize_item_format(Unit *u, FILE *f, const char *key, const char *format, ...) { | |
2196 | va_list ap; | |
2197 | ||
2198 | assert(u); | |
2199 | assert(f); | |
2200 | assert(key); | |
2201 | assert(format); | |
2202 | ||
2203 | fputs(key, f); | |
2204 | fputc('=', f); | |
2205 | ||
2206 | va_start(ap, format); | |
2207 | vfprintf(f, format, ap); | |
2208 | va_end(ap); | |
2209 | ||
2210 | fputc('\n', f); | |
2211 | } | |
2212 | ||
2213 | void unit_serialize_item(Unit *u, FILE *f, const char *key, const char *value) { | |
2214 | assert(u); | |
2215 | assert(f); | |
2216 | assert(key); | |
2217 | assert(value); | |
2218 | ||
2219 | fprintf(f, "%s=%s\n", key, value); | |
2220 | } | |
2221 | ||
2222 | int unit_deserialize(Unit *u, FILE *f, FDSet *fds) { | |
2223 | int r; | |
2224 | ||
2225 | assert(u); | |
2226 | assert(f); | |
2227 | assert(fds); | |
2228 | ||
2229 | if (!unit_can_serialize(u)) | |
2230 | return 0; | |
2231 | ||
2232 | for (;;) { | |
20c03b7b | 2233 | char line[LINE_MAX], *l, *v; |
a16e1123 LP |
2234 | size_t k; |
2235 | ||
2236 | if (!fgets(line, sizeof(line), f)) { | |
2237 | if (feof(f)) | |
2238 | return 0; | |
2239 | return -errno; | |
2240 | } | |
2241 | ||
10f8e83c | 2242 | char_array_0(line); |
a16e1123 LP |
2243 | l = strstrip(line); |
2244 | ||
2245 | /* End marker */ | |
2246 | if (l[0] == 0) | |
2247 | return 0; | |
2248 | ||
2249 | k = strcspn(l, "="); | |
2250 | ||
2251 | if (l[k] == '=') { | |
2252 | l[k] = 0; | |
2253 | v = l+k+1; | |
2254 | } else | |
2255 | v = l+k; | |
2256 | ||
cca098b0 | 2257 | if (streq(l, "job")) { |
39a18c60 MS |
2258 | if (v[0] == '\0') { |
2259 | /* new-style serialized job */ | |
2260 | Job *j = job_new_raw(u); | |
2261 | if (!j) | |
2262 | return -ENOMEM; | |
2263 | ||
2264 | r = job_deserialize(j, f, fds); | |
2265 | if (r < 0) { | |
2266 | job_free(j); | |
2267 | return r; | |
2268 | } | |
cca098b0 | 2269 | |
39a18c60 MS |
2270 | r = hashmap_put(u->manager->jobs, UINT32_TO_PTR(j->id), j); |
2271 | if (r < 0) { | |
2272 | job_free(j); | |
2273 | return r; | |
2274 | } | |
e0209d83 MS |
2275 | |
2276 | r = job_install_deserialized(j); | |
2277 | if (r < 0) { | |
2278 | hashmap_remove(u->manager->jobs, UINT32_TO_PTR(j->id)); | |
2279 | job_free(j); | |
2280 | return r; | |
2281 | } | |
6b19ad24 MS |
2282 | |
2283 | if (j->state == JOB_RUNNING) | |
2284 | u->manager->n_running_jobs++; | |
39a18c60 MS |
2285 | } else { |
2286 | /* legacy */ | |
2287 | JobType type = job_type_from_string(v); | |
2288 | if (type < 0) | |
2289 | log_debug("Failed to parse job type value %s", v); | |
2290 | else | |
2291 | u->deserialized_job = type; | |
2292 | } | |
cca098b0 | 2293 | continue; |
8aaf019b | 2294 | } else if (streq(l, "inactive-exit-timestamp")) { |
ac155bb8 | 2295 | dual_timestamp_deserialize(v, &u->inactive_exit_timestamp); |
8aaf019b LP |
2296 | continue; |
2297 | } else if (streq(l, "active-enter-timestamp")) { | |
ac155bb8 | 2298 | dual_timestamp_deserialize(v, &u->active_enter_timestamp); |
8aaf019b LP |
2299 | continue; |
2300 | } else if (streq(l, "active-exit-timestamp")) { | |
ac155bb8 | 2301 | dual_timestamp_deserialize(v, &u->active_exit_timestamp); |
8aaf019b LP |
2302 | continue; |
2303 | } else if (streq(l, "inactive-enter-timestamp")) { | |
ac155bb8 | 2304 | dual_timestamp_deserialize(v, &u->inactive_enter_timestamp); |
8aaf019b | 2305 | continue; |
2791a8f8 | 2306 | } else if (streq(l, "condition-timestamp")) { |
ac155bb8 | 2307 | dual_timestamp_deserialize(v, &u->condition_timestamp); |
2791a8f8 LP |
2308 | continue; |
2309 | } else if (streq(l, "condition-result")) { | |
2310 | int b; | |
2311 | ||
c2756a68 LP |
2312 | b = parse_boolean(v); |
2313 | if (b < 0) | |
2791a8f8 LP |
2314 | log_debug("Failed to parse condition result value %s", v); |
2315 | else | |
ac155bb8 | 2316 | u->condition_result = b; |
efbac6d2 LP |
2317 | |
2318 | continue; | |
c2756a68 LP |
2319 | |
2320 | } else if (streq(l, "transient")) { | |
2321 | int b; | |
2322 | ||
2323 | b = parse_boolean(v); | |
2324 | if (b < 0) | |
2325 | log_debug("Failed to parse transient bool %s", v); | |
2326 | else | |
2327 | u->transient = b; | |
2328 | ||
2329 | continue; | |
2330 | } else if (streq(l, "cgroup")) { | |
2331 | char *s; | |
2332 | ||
2333 | s = strdup(v); | |
f440e1bb | 2334 | if (!s) |
c2756a68 LP |
2335 | return -ENOMEM; |
2336 | ||
2337 | free(u->cgroup_path); | |
2338 | u->cgroup_path = s; | |
72673e86 LP |
2339 | |
2340 | hashmap_put(u->manager->cgroup_unit, s, u); | |
c2756a68 | 2341 | continue; |
8aaf019b | 2342 | } |
cca098b0 | 2343 | |
c2756a68 LP |
2344 | r = UNIT_VTABLE(u)->deserialize_item(u, l, v, fds); |
2345 | if (r < 0) | |
a16e1123 LP |
2346 | return r; |
2347 | } | |
2348 | } | |
2349 | ||
6e2ef85b LP |
2350 | int unit_add_node_link(Unit *u, const char *what, bool wants) { |
2351 | Unit *device; | |
2352 | char *e; | |
2353 | int r; | |
2354 | ||
2355 | assert(u); | |
2356 | ||
2357 | if (!what) | |
2358 | return 0; | |
2359 | ||
2360 | /* Adds in links to the device node that this unit is based on */ | |
2361 | ||
8407a5d0 | 2362 | if (!is_device_path(what)) |
6e2ef85b LP |
2363 | return 0; |
2364 | ||
35eb6b12 LP |
2365 | e = unit_name_from_path(what, ".device"); |
2366 | if (!e) | |
6e2ef85b LP |
2367 | return -ENOMEM; |
2368 | ||
ac155bb8 | 2369 | r = manager_load_unit(u->manager, e, NULL, NULL, &device); |
6e2ef85b | 2370 | free(e); |
6e2ef85b LP |
2371 | if (r < 0) |
2372 | return r; | |
2373 | ||
faa368e3 LP |
2374 | r = unit_add_two_dependencies(u, UNIT_AFTER, UNIT_BINDS_TO, device, true); |
2375 | if (r < 0) | |
6e2ef85b LP |
2376 | return r; |
2377 | ||
faa368e3 LP |
2378 | if (wants) { |
2379 | r = unit_add_dependency(device, UNIT_WANTS, u, false); | |
2380 | if (r < 0) | |
6e2ef85b | 2381 | return r; |
faa368e3 | 2382 | } |
6e2ef85b LP |
2383 | |
2384 | return 0; | |
2385 | } | |
a16e1123 | 2386 | |
cca098b0 LP |
2387 | int unit_coldplug(Unit *u) { |
2388 | int r; | |
2389 | ||
2390 | assert(u); | |
2391 | ||
2392 | if (UNIT_VTABLE(u)->coldplug) | |
2393 | if ((r = UNIT_VTABLE(u)->coldplug(u)) < 0) | |
2394 | return r; | |
2395 | ||
39a18c60 MS |
2396 | if (u->job) { |
2397 | r = job_coldplug(u->job); | |
2398 | if (r < 0) | |
2399 | return r; | |
2400 | } else if (u->deserialized_job >= 0) { | |
2401 | /* legacy */ | |
2402 | r = manager_add_job(u->manager, u->deserialized_job, u, JOB_IGNORE_REQUIREMENTS, false, NULL, NULL); | |
2403 | if (r < 0) | |
cca098b0 LP |
2404 | return r; |
2405 | ||
ac155bb8 | 2406 | u->deserialized_job = _JOB_TYPE_INVALID; |
cca098b0 LP |
2407 | } |
2408 | ||
2409 | return 0; | |
2410 | } | |
2411 | ||
b1e2b33c CR |
2412 | #pragma GCC diagnostic push |
2413 | #pragma GCC diagnostic ignored "-Wformat-nonliteral" | |
49b1d377 MS |
2414 | void unit_status_printf(Unit *u, const char *status, const char *unit_status_msg_format) { |
2415 | manager_status_printf(u->manager, false, status, unit_status_msg_format, unit_description(u)); | |
2416 | } | |
b1e2b33c | 2417 | #pragma GCC diagnostic pop |
49b1d377 | 2418 | |
45fb0699 | 2419 | bool unit_need_daemon_reload(Unit *u) { |
ae7a7182 OS |
2420 | _cleanup_strv_free_ char **t = NULL; |
2421 | char **path; | |
1b64d026 | 2422 | struct stat st; |
ae7a7182 | 2423 | unsigned loaded_cnt, current_cnt; |
1b64d026 | 2424 | |
45fb0699 LP |
2425 | assert(u); |
2426 | ||
ac155bb8 | 2427 | if (u->fragment_path) { |
5f4b19f4 | 2428 | zero(st); |
ac155bb8 | 2429 | if (stat(u->fragment_path, &st) < 0) |
5f4b19f4 LP |
2430 | /* What, cannot access this anymore? */ |
2431 | return true; | |
45fb0699 | 2432 | |
ac155bb8 MS |
2433 | if (u->fragment_mtime > 0 && |
2434 | timespec_load(&st.st_mtim) != u->fragment_mtime) | |
5f4b19f4 LP |
2435 | return true; |
2436 | } | |
2437 | ||
1b64d026 LP |
2438 | if (u->source_path) { |
2439 | zero(st); | |
2440 | if (stat(u->source_path, &st) < 0) | |
2441 | return true; | |
2442 | ||
2443 | if (u->source_mtime > 0 && | |
2444 | timespec_load(&st.st_mtim) != u->source_mtime) | |
2445 | return true; | |
2446 | } | |
5f4b19f4 | 2447 | |
ae7a7182 OS |
2448 | t = unit_find_dropin_paths(u); |
2449 | loaded_cnt = strv_length(t); | |
2450 | current_cnt = strv_length(u->dropin_paths); | |
2451 | ||
2452 | if (loaded_cnt == current_cnt) { | |
2453 | if (loaded_cnt == 0) | |
2454 | return false; | |
2455 | ||
2456 | if (strv_overlap(u->dropin_paths, t)) { | |
2457 | STRV_FOREACH(path, u->dropin_paths) { | |
2458 | zero(st); | |
2459 | if (stat(*path, &st) < 0) | |
2460 | return true; | |
2461 | ||
2462 | if (u->dropin_mtime > 0 && | |
2463 | timespec_load(&st.st_mtim) > u->dropin_mtime) | |
2464 | return true; | |
2465 | } | |
2466 | ||
2467 | return false; | |
2468 | } else | |
2469 | return true; | |
2470 | } else | |
2471 | return true; | |
45fb0699 LP |
2472 | } |
2473 | ||
fdf20a31 | 2474 | void unit_reset_failed(Unit *u) { |
5632e374 LP |
2475 | assert(u); |
2476 | ||
fdf20a31 MM |
2477 | if (UNIT_VTABLE(u)->reset_failed) |
2478 | UNIT_VTABLE(u)->reset_failed(u); | |
5632e374 LP |
2479 | } |
2480 | ||
a7f241db LP |
2481 | Unit *unit_following(Unit *u) { |
2482 | assert(u); | |
2483 | ||
2484 | if (UNIT_VTABLE(u)->following) | |
2485 | return UNIT_VTABLE(u)->following(u); | |
2486 | ||
2487 | return NULL; | |
2488 | } | |
2489 | ||
31afa0a4 | 2490 | bool unit_stop_pending(Unit *u) { |
18ffdfda LP |
2491 | assert(u); |
2492 | ||
31afa0a4 LP |
2493 | /* This call does check the current state of the unit. It's |
2494 | * hence useful to be called from state change calls of the | |
2495 | * unit itself, where the state isn't updated yet. This is | |
2496 | * different from unit_inactive_or_pending() which checks both | |
2497 | * the current state and for a queued job. */ | |
18ffdfda | 2498 | |
31afa0a4 LP |
2499 | return u->job && u->job->type == JOB_STOP; |
2500 | } | |
2501 | ||
2502 | bool unit_inactive_or_pending(Unit *u) { | |
2503 | assert(u); | |
2504 | ||
2505 | /* Returns true if the unit is inactive or going down */ | |
18ffdfda | 2506 | |
d956ac29 LP |
2507 | if (UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))) |
2508 | return true; | |
2509 | ||
31afa0a4 | 2510 | if (unit_stop_pending(u)) |
18ffdfda LP |
2511 | return true; |
2512 | ||
2513 | return false; | |
2514 | } | |
2515 | ||
31afa0a4 | 2516 | bool unit_active_or_pending(Unit *u) { |
f976f3f6 LP |
2517 | assert(u); |
2518 | ||
f60c2665 | 2519 | /* Returns true if the unit is active or going up */ |
f976f3f6 LP |
2520 | |
2521 | if (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) | |
2522 | return true; | |
2523 | ||
ac155bb8 MS |
2524 | if (u->job && |
2525 | (u->job->type == JOB_START || | |
2526 | u->job->type == JOB_RELOAD_OR_START || | |
2527 | u->job->type == JOB_RESTART)) | |
f976f3f6 LP |
2528 | return true; |
2529 | ||
2530 | return false; | |
2531 | } | |
2532 | ||
c74f17d9 | 2533 | int unit_kill(Unit *u, KillWho w, int signo, DBusError *error) { |
8a0867d6 LP |
2534 | assert(u); |
2535 | assert(w >= 0 && w < _KILL_WHO_MAX); | |
8a0867d6 LP |
2536 | assert(signo > 0); |
2537 | assert(signo < _NSIG); | |
2538 | ||
8a0867d6 LP |
2539 | if (!UNIT_VTABLE(u)->kill) |
2540 | return -ENOTSUP; | |
2541 | ||
c74f17d9 | 2542 | return UNIT_VTABLE(u)->kill(u, w, signo, error); |
8a0867d6 LP |
2543 | } |
2544 | ||
82659fd7 LP |
2545 | static Set *unit_pid_set(pid_t main_pid, pid_t control_pid) { |
2546 | Set *pid_set; | |
2547 | int r; | |
2548 | ||
2549 | pid_set = set_new(trivial_hash_func, trivial_compare_func); | |
2550 | if (!pid_set) | |
2551 | return NULL; | |
2552 | ||
2553 | /* Exclude the main/control pids from being killed via the cgroup */ | |
2554 | if (main_pid > 0) { | |
2555 | r = set_put(pid_set, LONG_TO_PTR(main_pid)); | |
2556 | if (r < 0) | |
2557 | goto fail; | |
2558 | } | |
2559 | ||
2560 | if (control_pid > 0) { | |
2561 | r = set_put(pid_set, LONG_TO_PTR(control_pid)); | |
2562 | if (r < 0) | |
2563 | goto fail; | |
2564 | } | |
2565 | ||
2566 | return pid_set; | |
2567 | ||
2568 | fail: | |
2569 | set_free(pid_set); | |
2570 | return NULL; | |
2571 | } | |
2572 | ||
d91c34f2 LP |
2573 | int unit_kill_common( |
2574 | Unit *u, | |
2575 | KillWho who, | |
2576 | int signo, | |
2577 | pid_t main_pid, | |
2578 | pid_t control_pid, | |
2579 | DBusError *error) { | |
2580 | ||
814cc562 MS |
2581 | int r = 0; |
2582 | ||
2583 | if (who == KILL_MAIN && main_pid <= 0) { | |
2584 | if (main_pid < 0) | |
2585 | dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "%s units have no main processes", unit_type_to_string(u->type)); | |
2586 | else | |
2587 | dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No main process to kill"); | |
2588 | return -ESRCH; | |
2589 | } | |
2590 | ||
2591 | if (who == KILL_CONTROL && control_pid <= 0) { | |
2592 | if (control_pid < 0) | |
2593 | dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "%s units have no control processes", unit_type_to_string(u->type)); | |
2594 | else | |
2595 | dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill"); | |
2596 | return -ESRCH; | |
2597 | } | |
2598 | ||
2599 | if (who == KILL_CONTROL || who == KILL_ALL) | |
2600 | if (control_pid > 0) | |
2601 | if (kill(control_pid, signo) < 0) | |
2602 | r = -errno; | |
2603 | ||
2604 | if (who == KILL_MAIN || who == KILL_ALL) | |
2605 | if (main_pid > 0) | |
2606 | if (kill(main_pid, signo) < 0) | |
2607 | r = -errno; | |
2608 | ||
4ad49000 | 2609 | if (who == KILL_ALL && u->cgroup_path) { |
814cc562 MS |
2610 | _cleanup_set_free_ Set *pid_set = NULL; |
2611 | int q; | |
2612 | ||
82659fd7 LP |
2613 | /* Exclude the main/control pids from being killed via the cgroup */ |
2614 | pid_set = unit_pid_set(main_pid, control_pid); | |
814cc562 MS |
2615 | if (!pid_set) |
2616 | return -ENOMEM; | |
2617 | ||
4ad49000 | 2618 | q = cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, signo, false, true, false, pid_set); |
814cc562 MS |
2619 | if (q < 0 && q != -EAGAIN && q != -ESRCH && q != -ENOENT) |
2620 | r = q; | |
2621 | } | |
2622 | ||
2623 | return r; | |
2624 | } | |
2625 | ||
6210e7fc LP |
2626 | int unit_following_set(Unit *u, Set **s) { |
2627 | assert(u); | |
2628 | assert(s); | |
2629 | ||
2630 | if (UNIT_VTABLE(u)->following_set) | |
2631 | return UNIT_VTABLE(u)->following_set(u, s); | |
2632 | ||
2633 | *s = NULL; | |
2634 | return 0; | |
2635 | } | |
2636 | ||
a4375746 LP |
2637 | UnitFileState unit_get_unit_file_state(Unit *u) { |
2638 | assert(u); | |
2639 | ||
ac155bb8 MS |
2640 | if (u->unit_file_state < 0 && u->fragment_path) |
2641 | u->unit_file_state = unit_file_get_state( | |
67445f4e | 2642 | u->manager->running_as == SYSTEMD_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER, |
9eb977db | 2643 | NULL, path_get_file_name(u->fragment_path)); |
a4375746 | 2644 | |
ac155bb8 | 2645 | return u->unit_file_state; |
a4375746 LP |
2646 | } |
2647 | ||
57020a3a LP |
2648 | Unit* unit_ref_set(UnitRef *ref, Unit *u) { |
2649 | assert(ref); | |
2650 | assert(u); | |
2651 | ||
2652 | if (ref->unit) | |
2653 | unit_ref_unset(ref); | |
2654 | ||
2655 | ref->unit = u; | |
ac155bb8 | 2656 | LIST_PREPEND(UnitRef, refs, u->refs, ref); |
57020a3a LP |
2657 | return u; |
2658 | } | |
2659 | ||
2660 | void unit_ref_unset(UnitRef *ref) { | |
2661 | assert(ref); | |
2662 | ||
2663 | if (!ref->unit) | |
2664 | return; | |
2665 | ||
ac155bb8 | 2666 | LIST_REMOVE(UnitRef, refs, ref->unit->refs, ref); |
57020a3a LP |
2667 | ref->unit = NULL; |
2668 | } | |
2669 | ||
7c8fa05c LP |
2670 | int unit_add_one_mount_link(Unit *u, Mount *m) { |
2671 | char **i; | |
2672 | ||
2673 | assert(u); | |
2674 | assert(m); | |
2675 | ||
2676 | if (u->load_state != UNIT_LOADED || | |
2677 | UNIT(m)->load_state != UNIT_LOADED) | |
2678 | return 0; | |
2679 | ||
2680 | STRV_FOREACH(i, u->requires_mounts_for) { | |
2681 | ||
2682 | if (UNIT(m) == u) | |
2683 | continue; | |
2684 | ||
2685 | if (!path_startswith(*i, m->where)) | |
2686 | continue; | |
2687 | ||
2688 | return unit_add_two_dependencies(u, UNIT_AFTER, UNIT_REQUIRES, UNIT(m), true); | |
2689 | } | |
2690 | ||
2691 | return 0; | |
2692 | } | |
2693 | ||
2694 | int unit_add_mount_links(Unit *u) { | |
2695 | Unit *other; | |
2696 | int r; | |
2697 | ||
2698 | assert(u); | |
2699 | ||
2700 | LIST_FOREACH(units_by_type, other, u->manager->units_by_type[UNIT_MOUNT]) { | |
2701 | r = unit_add_one_mount_link(u, MOUNT(other)); | |
2702 | if (r < 0) | |
2703 | return r; | |
2704 | } | |
2705 | ||
2706 | return 0; | |
2707 | } | |
2708 | ||
cba6e062 LP |
2709 | int unit_exec_context_defaults(Unit *u, ExecContext *c) { |
2710 | unsigned i; | |
2711 | int r; | |
2712 | ||
e06c73cc LP |
2713 | assert(u); |
2714 | assert(c); | |
2715 | ||
cba6e062 | 2716 | /* This only copies in the ones that need memory */ |
cba6e062 LP |
2717 | for (i = 0; i < RLIMIT_NLIMITS; i++) |
2718 | if (u->manager->rlimit[i] && !c->rlimit[i]) { | |
2719 | c->rlimit[i] = newdup(struct rlimit, u->manager->rlimit[i], 1); | |
2720 | if (!c->rlimit[i]) | |
2721 | return -ENOMEM; | |
2722 | } | |
2723 | ||
67445f4e | 2724 | if (u->manager->running_as == SYSTEMD_USER && |
cba6e062 | 2725 | !c->working_directory) { |
e06c73cc | 2726 | |
cba6e062 LP |
2727 | r = get_home_dir(&c->working_directory); |
2728 | if (r < 0) | |
2729 | return r; | |
2730 | } | |
2731 | ||
2732 | return 0; | |
e06c73cc LP |
2733 | } |
2734 | ||
3ef63c31 LP |
2735 | ExecContext *unit_get_exec_context(Unit *u) { |
2736 | size_t offset; | |
2737 | assert(u); | |
2738 | ||
2739 | offset = UNIT_VTABLE(u)->exec_context_offset; | |
2740 | if (offset <= 0) | |
2741 | return NULL; | |
2742 | ||
2743 | return (ExecContext*) ((uint8_t*) u + offset); | |
2744 | } | |
2745 | ||
4ad49000 LP |
2746 | CGroupContext *unit_get_cgroup_context(Unit *u) { |
2747 | size_t offset; | |
2748 | ||
2749 | offset = UNIT_VTABLE(u)->cgroup_context_offset; | |
2750 | if (offset <= 0) | |
2751 | return NULL; | |
2752 | ||
2753 | return (CGroupContext*) ((uint8_t*) u + offset); | |
2754 | } | |
2755 | ||
8e2af478 | 2756 | static int drop_in_file(Unit *u, UnitSetPropertiesMode mode, const char *name, char **_p, char **_q) { |
b9ec9359 | 2757 | _cleanup_free_ char *b = NULL; |
26d04f86 LP |
2758 | char *p, *q; |
2759 | int r; | |
2760 | ||
71645aca | 2761 | assert(u); |
26d04f86 LP |
2762 | assert(name); |
2763 | assert(_p); | |
2764 | assert(_q); | |
8e2af478 | 2765 | assert(mode & (UNIT_PERSISTENT|UNIT_RUNTIME)); |
71645aca | 2766 | |
b9ec9359 LP |
2767 | b = xescape(name, "/."); |
2768 | if (!b) | |
2769 | return -ENOMEM; | |
2770 | ||
2771 | if (!filename_is_safe(b)) | |
71645aca LP |
2772 | return -EINVAL; |
2773 | ||
26d04f86 LP |
2774 | if (u->manager->running_as == SYSTEMD_USER) { |
2775 | _cleanup_free_ char *c = NULL; | |
2776 | ||
2777 | r = user_config_home(&c); | |
2778 | if (r < 0) | |
2779 | return r; | |
2780 | if (r == 0) | |
2781 | return -ENOENT; | |
2782 | ||
2783 | p = strjoin(c, "/", u->id, ".d", NULL); | |
c2756a68 | 2784 | } else if (mode & UNIT_PERSISTENT) |
26d04f86 | 2785 | p = strjoin("/etc/systemd/system/", u->id, ".d", NULL); |
8e2af478 LP |
2786 | else |
2787 | p = strjoin("/run/systemd/system/", u->id, ".d", NULL); | |
71645aca LP |
2788 | if (!p) |
2789 | return -ENOMEM; | |
2790 | ||
b9ec9359 | 2791 | q = strjoin(p, "/90-", b, ".conf", NULL); |
26d04f86 LP |
2792 | if (!q) { |
2793 | free(p); | |
71645aca | 2794 | return -ENOMEM; |
26d04f86 | 2795 | } |
71645aca | 2796 | |
26d04f86 LP |
2797 | *_p = p; |
2798 | *_q = q; | |
2799 | return 0; | |
71645aca LP |
2800 | } |
2801 | ||
8e2af478 | 2802 | int unit_write_drop_in(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data) { |
71645aca | 2803 | _cleanup_free_ char *p = NULL, *q = NULL; |
26d04f86 | 2804 | int r; |
71645aca LP |
2805 | |
2806 | assert(u); | |
b42defe3 LP |
2807 | assert(name); |
2808 | assert(data); | |
71645aca | 2809 | |
8e2af478 LP |
2810 | if (!(mode & (UNIT_PERSISTENT|UNIT_RUNTIME))) |
2811 | return 0; | |
2812 | ||
2813 | r = drop_in_file(u, mode, name, &p, &q); | |
26d04f86 LP |
2814 | if (r < 0) |
2815 | return r; | |
71645aca | 2816 | |
26d04f86 | 2817 | mkdir_p(p, 0755); |
574d5f2d | 2818 | return write_string_file_atomic_label(q, data); |
26d04f86 | 2819 | } |
71645aca | 2820 | |
b9ec9359 LP |
2821 | int unit_write_drop_in_format(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *format, ...) { |
2822 | _cleanup_free_ char *p = NULL; | |
2823 | va_list ap; | |
2824 | int r; | |
2825 | ||
2826 | assert(u); | |
2827 | assert(name); | |
2828 | assert(format); | |
2829 | ||
2830 | if (!(mode & (UNIT_PERSISTENT|UNIT_RUNTIME))) | |
2831 | return 0; | |
2832 | ||
2833 | va_start(ap, format); | |
2834 | r = vasprintf(&p, format, ap); | |
2835 | va_end(ap); | |
2836 | ||
2837 | if (r < 0) | |
2838 | return -ENOMEM; | |
2839 | ||
2840 | return unit_write_drop_in(u, mode, name, p); | |
2841 | } | |
2842 | ||
2843 | int unit_write_drop_in_private(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data) { | |
b42defe3 LP |
2844 | _cleanup_free_ char *ndata = NULL; |
2845 | ||
2846 | assert(u); | |
2847 | assert(name); | |
2848 | assert(data); | |
2849 | ||
2850 | if (!UNIT_VTABLE(u)->private_section) | |
2851 | return -EINVAL; | |
2852 | ||
b9ec9359 LP |
2853 | if (!(mode & (UNIT_PERSISTENT|UNIT_RUNTIME))) |
2854 | return 0; | |
2855 | ||
b42defe3 LP |
2856 | ndata = strjoin("[", UNIT_VTABLE(u)->private_section, "]\n", data, NULL); |
2857 | if (!ndata) | |
2858 | return -ENOMEM; | |
2859 | ||
2860 | return unit_write_drop_in(u, mode, name, ndata); | |
2861 | } | |
2862 | ||
b9ec9359 LP |
2863 | int unit_write_drop_in_private_format(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *format, ...) { |
2864 | _cleanup_free_ char *p = NULL; | |
2865 | va_list ap; | |
2866 | int r; | |
2867 | ||
2868 | assert(u); | |
2869 | assert(name); | |
2870 | assert(format); | |
2871 | ||
2872 | if (!(mode & (UNIT_PERSISTENT|UNIT_RUNTIME))) | |
2873 | return 0; | |
2874 | ||
2875 | va_start(ap, format); | |
2876 | r = vasprintf(&p, format, ap); | |
2877 | va_end(ap); | |
2878 | ||
2879 | if (r < 0) | |
2880 | return -ENOMEM; | |
2881 | ||
2882 | return unit_write_drop_in_private(u, mode, name, p); | |
2883 | } | |
2884 | ||
8e2af478 | 2885 | int unit_remove_drop_in(Unit *u, UnitSetPropertiesMode mode, const char *name) { |
26d04f86 LP |
2886 | _cleanup_free_ char *p = NULL, *q = NULL; |
2887 | int r; | |
71645aca | 2888 | |
26d04f86 | 2889 | assert(u); |
71645aca | 2890 | |
8e2af478 LP |
2891 | if (!(mode & (UNIT_PERSISTENT|UNIT_RUNTIME))) |
2892 | return 0; | |
2893 | ||
2894 | r = drop_in_file(u, mode, name, &p, &q); | |
71645aca | 2895 | if (unlink(q) < 0) |
241da328 | 2896 | r = errno == ENOENT ? 0 : -errno; |
26d04f86 | 2897 | else |
241da328 | 2898 | r = 1; |
71645aca LP |
2899 | |
2900 | rmdir(p); | |
26d04f86 | 2901 | return r; |
71645aca LP |
2902 | } |
2903 | ||
c2756a68 LP |
2904 | int unit_make_transient(Unit *u) { |
2905 | int r; | |
2906 | ||
2907 | assert(u); | |
2908 | ||
2909 | u->load_state = UNIT_STUB; | |
2910 | u->load_error = 0; | |
2911 | u->transient = true; | |
2912 | ||
2913 | free(u->fragment_path); | |
2914 | u->fragment_path = NULL; | |
2915 | ||
2916 | if (u->manager->running_as == SYSTEMD_USER) { | |
2917 | _cleanup_free_ char *c = NULL; | |
2918 | ||
2919 | r = user_config_home(&c); | |
2920 | if (r < 0) | |
2921 | return r; | |
2922 | if (r == 0) | |
2923 | return -ENOENT; | |
2924 | ||
2925 | u->fragment_path = strjoin(c, "/", u->id, NULL); | |
2926 | if (!u->fragment_path) | |
2927 | return -ENOMEM; | |
2928 | ||
2929 | mkdir_p(c, 0755); | |
2930 | } else { | |
2931 | u->fragment_path = strappend("/run/systemd/system/", u->id); | |
2932 | if (!u->fragment_path) | |
2933 | return -ENOMEM; | |
2934 | ||
2935 | mkdir_p("/run/systemd/system", 0755); | |
2936 | } | |
2937 | ||
2938 | return write_string_file_atomic_label(u->fragment_path, "# Transient stub"); | |
2939 | } | |
2940 | ||
cd2086fe LP |
2941 | int unit_kill_context( |
2942 | Unit *u, | |
2943 | KillContext *c, | |
2944 | bool sigkill, | |
2945 | pid_t main_pid, | |
2946 | pid_t control_pid, | |
2947 | bool main_pid_alien) { | |
2948 | ||
2949 | int sig, wait_for_exit = 0, r; | |
2950 | ||
2951 | assert(u); | |
2952 | assert(c); | |
2953 | ||
2954 | if (c->kill_mode == KILL_NONE) | |
2955 | return 0; | |
2956 | ||
2957 | sig = sigkill ? SIGKILL : c->kill_signal; | |
2958 | ||
2959 | if (main_pid > 0) { | |
2960 | r = kill_and_sigcont(main_pid, sig); | |
2961 | ||
2962 | if (r < 0 && r != -ESRCH) { | |
2963 | _cleanup_free_ char *comm = NULL; | |
2964 | get_process_comm(main_pid, &comm); | |
2965 | ||
2966 | log_warning_unit(u->id, "Failed to kill main process %li (%s): %s", | |
2967 | (long) main_pid, strna(comm), strerror(-r)); | |
82659fd7 | 2968 | } else { |
cd2086fe | 2969 | wait_for_exit = !main_pid_alien; |
82659fd7 LP |
2970 | |
2971 | if (c->send_sighup) | |
2972 | kill(main_pid, SIGHUP); | |
2973 | } | |
cd2086fe LP |
2974 | } |
2975 | ||
2976 | if (control_pid > 0) { | |
2977 | r = kill_and_sigcont(control_pid, sig); | |
2978 | ||
2979 | if (r < 0 && r != -ESRCH) { | |
2980 | _cleanup_free_ char *comm = NULL; | |
2981 | get_process_comm(control_pid, &comm); | |
2982 | ||
2983 | log_warning_unit(u->id, | |
2984 | "Failed to kill control process %li (%s): %s", | |
2985 | (long) control_pid, strna(comm), strerror(-r)); | |
82659fd7 | 2986 | } else { |
cd2086fe | 2987 | wait_for_exit = true; |
82659fd7 LP |
2988 | |
2989 | if (c->send_sighup) | |
2990 | kill(control_pid, SIGHUP); | |
2991 | } | |
cd2086fe LP |
2992 | } |
2993 | ||
4ad49000 | 2994 | if (c->kill_mode == KILL_CONTROL_GROUP && u->cgroup_path) { |
cd2086fe LP |
2995 | _cleanup_set_free_ Set *pid_set = NULL; |
2996 | ||
82659fd7 LP |
2997 | /* Exclude the main/control pids from being killed via the cgroup */ |
2998 | pid_set = unit_pid_set(main_pid, control_pid); | |
cd2086fe LP |
2999 | if (!pid_set) |
3000 | return -ENOMEM; | |
3001 | ||
4ad49000 | 3002 | r = cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, sig, true, true, false, pid_set); |
cd2086fe LP |
3003 | if (r < 0) { |
3004 | if (r != -EAGAIN && r != -ESRCH && r != -ENOENT) | |
3005 | log_warning_unit(u->id, "Failed to kill control group: %s", strerror(-r)); | |
82659fd7 | 3006 | } else if (r > 0) { |
cd2086fe | 3007 | wait_for_exit = true; |
82659fd7 LP |
3008 | if (c->send_sighup) { |
3009 | set_free(pid_set); | |
3010 | ||
3011 | pid_set = unit_pid_set(main_pid, control_pid); | |
3012 | if (!pid_set) | |
3013 | return -ENOMEM; | |
3014 | ||
3015 | cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, SIGHUP, true, true, false, pid_set); | |
3016 | } | |
3017 | } | |
cd2086fe LP |
3018 | } |
3019 | ||
3020 | return wait_for_exit; | |
3021 | } | |
3022 | ||
94f04347 LP |
3023 | static const char* const unit_active_state_table[_UNIT_ACTIVE_STATE_MAX] = { |
3024 | [UNIT_ACTIVE] = "active", | |
032ff4af | 3025 | [UNIT_RELOADING] = "reloading", |
94f04347 | 3026 | [UNIT_INACTIVE] = "inactive", |
fdf20a31 | 3027 | [UNIT_FAILED] = "failed", |
94f04347 LP |
3028 | [UNIT_ACTIVATING] = "activating", |
3029 | [UNIT_DEACTIVATING] = "deactivating" | |
3030 | }; | |
3031 | ||
3032 | DEFINE_STRING_TABLE_LOOKUP(unit_active_state, UnitActiveState); | |
3033 | ||
3034 | static const char* const unit_dependency_table[_UNIT_DEPENDENCY_MAX] = { | |
3035 | [UNIT_REQUIRES] = "Requires", | |
9e2f7c11 | 3036 | [UNIT_REQUIRES_OVERRIDABLE] = "RequiresOverridable", |
94f04347 | 3037 | [UNIT_REQUISITE] = "Requisite", |
9e2f7c11 | 3038 | [UNIT_REQUISITE_OVERRIDABLE] = "RequisiteOverridable", |
ac6a4abe MS |
3039 | [UNIT_WANTS] = "Wants", |
3040 | [UNIT_BINDS_TO] = "BindsTo", | |
3041 | [UNIT_PART_OF] = "PartOf", | |
94f04347 | 3042 | [UNIT_REQUIRED_BY] = "RequiredBy", |
9e2f7c11 | 3043 | [UNIT_REQUIRED_BY_OVERRIDABLE] = "RequiredByOverridable", |
94f04347 | 3044 | [UNIT_WANTED_BY] = "WantedBy", |
ac6a4abe MS |
3045 | [UNIT_BOUND_BY] = "BoundBy", |
3046 | [UNIT_CONSISTS_OF] = "ConsistsOf", | |
94f04347 | 3047 | [UNIT_CONFLICTS] = "Conflicts", |
69dd2852 | 3048 | [UNIT_CONFLICTED_BY] = "ConflictedBy", |
94f04347 LP |
3049 | [UNIT_BEFORE] = "Before", |
3050 | [UNIT_AFTER] = "After", | |
57020a3a LP |
3051 | [UNIT_ON_FAILURE] = "OnFailure", |
3052 | [UNIT_TRIGGERS] = "Triggers", | |
4dcc1cb4 | 3053 | [UNIT_TRIGGERED_BY] = "TriggeredBy", |
7f2cddae | 3054 | [UNIT_PROPAGATES_RELOAD_TO] = "PropagatesReloadTo", |
ac6a4abe MS |
3055 | [UNIT_RELOAD_PROPAGATED_FROM] = "ReloadPropagatedFrom", |
3056 | [UNIT_REFERENCES] = "References", | |
3057 | [UNIT_REFERENCED_BY] = "ReferencedBy", | |
94f04347 LP |
3058 | }; |
3059 | ||
3060 | DEFINE_STRING_TABLE_LOOKUP(unit_dependency, UnitDependency); |