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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 | |
e48614c4 ZJS |
130 | r = unit_name_to_instance(s, &i); |
131 | if (r < 0) | |
9e2f7c11 | 132 | goto fail; |
87f0e418 | 133 | |
796ba554 LP |
134 | if (i && unit_vtable[t]->no_instances) { |
135 | r = -EINVAL; | |
9e2f7c11 | 136 | goto fail; |
796ba554 | 137 | } |
9e2f7c11 | 138 | |
276c3e78 LP |
139 | /* Ensure that this unit is either instanced or not instanced, |
140 | * but not both. */ | |
ac155bb8 | 141 | if (u->type != _UNIT_TYPE_INVALID && !u->instance != !i) { |
9e2f7c11 LP |
142 | r = -EINVAL; |
143 | goto fail; | |
144 | } | |
145 | ||
146 | if (unit_vtable[t]->no_alias && | |
ac155bb8 MS |
147 | !set_isempty(u->names) && |
148 | !set_get(u->names, s)) { | |
9e2f7c11 LP |
149 | r = -EEXIST; |
150 | goto fail; | |
151 | } | |
152 | ||
ac155bb8 | 153 | if (hashmap_size(u->manager->units) >= MANAGER_MAX_NAMES) { |
4f0f902f LP |
154 | r = -E2BIG; |
155 | goto fail; | |
156 | } | |
157 | ||
e48614c4 ZJS |
158 | r = set_put(u->names, s); |
159 | if (r < 0) { | |
9e2f7c11 LP |
160 | if (r == -EEXIST) |
161 | r = 0; | |
162 | goto fail; | |
87f0e418 LP |
163 | } |
164 | ||
e48614c4 ZJS |
165 | r = hashmap_put(u->manager->units, s, u); |
166 | if (r < 0) { | |
ac155bb8 | 167 | set_remove(u->names, s); |
9e2f7c11 | 168 | goto fail; |
87f0e418 LP |
169 | } |
170 | ||
ac155bb8 | 171 | if (u->type == _UNIT_TYPE_INVALID) { |
ef734fd6 | 172 | |
ac155bb8 MS |
173 | u->type = t; |
174 | u->id = s; | |
175 | u->instance = i; | |
9e2f7c11 | 176 | |
71fda00f | 177 | LIST_PREPEND(units_by_type, u->manager->units_by_type[t], u); |
e537352b LP |
178 | |
179 | if (UNIT_VTABLE(u)->init) | |
180 | UNIT_VTABLE(u)->init(u); | |
9e2f7c11 LP |
181 | } else |
182 | free(i); | |
87f0e418 | 183 | |
c1e1601e | 184 | unit_add_to_dbus_queue(u); |
87f0e418 | 185 | return 0; |
9e2f7c11 LP |
186 | |
187 | fail: | |
188 | free(s); | |
189 | free(i); | |
190 | ||
191 | return r; | |
87f0e418 LP |
192 | } |
193 | ||
0ae97ec1 | 194 | int unit_choose_id(Unit *u, const char *name) { |
68eda4bd RC |
195 | char *s, *i; |
196 | _cleanup_free_ char *t = NULL; | |
276c3e78 | 197 | int r; |
0ae97ec1 LP |
198 | |
199 | assert(u); | |
200 | assert(name); | |
201 | ||
9e2f7c11 LP |
202 | if (unit_name_is_template(name)) { |
203 | ||
ac155bb8 | 204 | if (!u->instance) |
9e2f7c11 LP |
205 | return -EINVAL; |
206 | ||
e48614c4 ZJS |
207 | t = unit_name_replace_instance(name, u->instance); |
208 | if (!t) | |
9e2f7c11 LP |
209 | return -ENOMEM; |
210 | ||
211 | name = t; | |
212 | } | |
213 | ||
0ae97ec1 | 214 | /* Selects one of the names of this unit as the id */ |
ac155bb8 | 215 | s = set_get(u->names, (char*) name); |
0ae97ec1 | 216 | |
9e2f7c11 | 217 | if (!s) |
0ae97ec1 LP |
218 | return -ENOENT; |
219 | ||
e48614c4 ZJS |
220 | r = unit_name_to_instance(s, &i); |
221 | if (r < 0) | |
276c3e78 LP |
222 | return r; |
223 | ||
ac155bb8 | 224 | u->id = s; |
276c3e78 | 225 | |
ac155bb8 MS |
226 | free(u->instance); |
227 | u->instance = i; | |
276c3e78 | 228 | |
c1e1601e | 229 | unit_add_to_dbus_queue(u); |
9e2f7c11 | 230 | |
0ae97ec1 LP |
231 | return 0; |
232 | } | |
233 | ||
f50e0a01 LP |
234 | int unit_set_description(Unit *u, const char *description) { |
235 | char *s; | |
236 | ||
237 | assert(u); | |
238 | ||
8aec412f LP |
239 | if (isempty(description)) |
240 | s = NULL; | |
241 | else { | |
242 | s = strdup(description); | |
243 | if (!s) | |
244 | return -ENOMEM; | |
245 | } | |
f50e0a01 | 246 | |
ac155bb8 MS |
247 | free(u->description); |
248 | u->description = s; | |
c1e1601e LP |
249 | |
250 | unit_add_to_dbus_queue(u); | |
f50e0a01 LP |
251 | return 0; |
252 | } | |
253 | ||
701cc384 LP |
254 | bool unit_check_gc(Unit *u) { |
255 | assert(u); | |
256 | ||
ac155bb8 | 257 | if (u->load_state == UNIT_STUB) |
b86d44e5 LP |
258 | return true; |
259 | ||
701cc384 LP |
260 | if (UNIT_VTABLE(u)->no_gc) |
261 | return true; | |
262 | ||
ac155bb8 | 263 | if (u->no_gc) |
6c073082 LP |
264 | return true; |
265 | ||
ac155bb8 | 266 | if (u->job) |
701cc384 LP |
267 | return true; |
268 | ||
e0209d83 MS |
269 | if (u->nop_job) |
270 | return true; | |
271 | ||
701cc384 LP |
272 | if (unit_active_state(u) != UNIT_INACTIVE) |
273 | return true; | |
274 | ||
9d576438 LP |
275 | if (u->refs) |
276 | return true; | |
277 | ||
701cc384 LP |
278 | if (UNIT_VTABLE(u)->check_gc) |
279 | if (UNIT_VTABLE(u)->check_gc(u)) | |
280 | return true; | |
281 | ||
282 | return false; | |
283 | } | |
284 | ||
87f0e418 LP |
285 | void unit_add_to_load_queue(Unit *u) { |
286 | assert(u); | |
ac155bb8 | 287 | assert(u->type != _UNIT_TYPE_INVALID); |
87f0e418 | 288 | |
ac155bb8 | 289 | if (u->load_state != UNIT_STUB || u->in_load_queue) |
87f0e418 LP |
290 | return; |
291 | ||
71fda00f | 292 | LIST_PREPEND(load_queue, u->manager->load_queue, u); |
ac155bb8 | 293 | u->in_load_queue = true; |
87f0e418 LP |
294 | } |
295 | ||
23a177ef LP |
296 | void unit_add_to_cleanup_queue(Unit *u) { |
297 | assert(u); | |
298 | ||
ac155bb8 | 299 | if (u->in_cleanup_queue) |
23a177ef LP |
300 | return; |
301 | ||
71fda00f | 302 | LIST_PREPEND(cleanup_queue, u->manager->cleanup_queue, u); |
ac155bb8 | 303 | u->in_cleanup_queue = true; |
23a177ef LP |
304 | } |
305 | ||
701cc384 LP |
306 | void unit_add_to_gc_queue(Unit *u) { |
307 | assert(u); | |
308 | ||
ac155bb8 | 309 | if (u->in_gc_queue || u->in_cleanup_queue) |
701cc384 LP |
310 | return; |
311 | ||
312 | if (unit_check_gc(u)) | |
313 | return; | |
314 | ||
71fda00f | 315 | LIST_PREPEND(gc_queue, u->manager->gc_queue, u); |
ac155bb8 | 316 | u->in_gc_queue = true; |
701cc384 | 317 | |
ac155bb8 | 318 | u->manager->n_in_gc_queue ++; |
701cc384 LP |
319 | } |
320 | ||
c1e1601e LP |
321 | void unit_add_to_dbus_queue(Unit *u) { |
322 | assert(u); | |
ac155bb8 | 323 | assert(u->type != _UNIT_TYPE_INVALID); |
c1e1601e | 324 | |
ac155bb8 | 325 | if (u->load_state == UNIT_STUB || u->in_dbus_queue) |
c1e1601e LP |
326 | return; |
327 | ||
a567261a | 328 | /* Shortcut things if nobody cares */ |
ac155bb8 MS |
329 | if (!bus_has_subscriber(u->manager)) { |
330 | u->sent_dbus_new_signal = true; | |
94b6dfa2 LP |
331 | return; |
332 | } | |
333 | ||
71fda00f | 334 | LIST_PREPEND(dbus_queue, u->manager->dbus_unit_queue, u); |
ac155bb8 | 335 | u->in_dbus_queue = true; |
c1e1601e LP |
336 | } |
337 | ||
87f0e418 LP |
338 | static void bidi_set_free(Unit *u, Set *s) { |
339 | Iterator i; | |
340 | Unit *other; | |
341 | ||
342 | assert(u); | |
343 | ||
344 | /* Frees the set and makes sure we are dropped from the | |
345 | * inverse pointers */ | |
346 | ||
347 | SET_FOREACH(other, s, i) { | |
348 | UnitDependency d; | |
349 | ||
350 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) | |
ac155bb8 | 351 | set_remove(other->dependencies[d], u); |
701cc384 LP |
352 | |
353 | unit_add_to_gc_queue(other); | |
87f0e418 LP |
354 | } |
355 | ||
356 | set_free(s); | |
357 | } | |
358 | ||
c2756a68 LP |
359 | static void unit_remove_transient(Unit *u) { |
360 | char **i; | |
361 | ||
362 | assert(u); | |
363 | ||
364 | if (!u->transient) | |
365 | return; | |
366 | ||
367 | if (u->fragment_path) | |
368 | unlink(u->fragment_path); | |
369 | ||
370 | STRV_FOREACH(i, u->dropin_paths) { | |
371 | _cleanup_free_ char *p = NULL; | |
372 | int r; | |
373 | ||
374 | unlink(*i); | |
375 | ||
376 | r = path_get_parent(*i, &p); | |
377 | if (r >= 0) | |
378 | rmdir(p); | |
379 | } | |
380 | } | |
381 | ||
a57f7e2c LP |
382 | static void unit_free_requires_mounts_for(Unit *u) { |
383 | char **j; | |
384 | ||
385 | STRV_FOREACH(j, u->requires_mounts_for) { | |
386 | char s[strlen(*j) + 1]; | |
387 | ||
388 | PATH_FOREACH_PREFIX_MORE(s, *j) { | |
389 | char *y; | |
390 | Set *x; | |
391 | ||
392 | x = hashmap_get2(u->manager->units_requiring_mounts_for, s, (void**) &y); | |
393 | if (!x) | |
394 | continue; | |
395 | ||
396 | set_remove(x, u); | |
397 | ||
398 | if (set_isempty(x)) { | |
399 | hashmap_remove(u->manager->units_requiring_mounts_for, y); | |
400 | free(y); | |
401 | set_free(x); | |
402 | } | |
403 | } | |
404 | } | |
405 | ||
406 | strv_free(u->requires_mounts_for); | |
407 | u->requires_mounts_for = NULL; | |
408 | } | |
409 | ||
87f0e418 LP |
410 | void unit_free(Unit *u) { |
411 | UnitDependency d; | |
412 | Iterator i; | |
413 | char *t; | |
414 | ||
415 | assert(u); | |
416 | ||
c2756a68 LP |
417 | if (u->manager->n_reloading <= 0) |
418 | unit_remove_transient(u); | |
419 | ||
c1e1601e LP |
420 | bus_unit_send_removed_signal(u); |
421 | ||
ac155bb8 | 422 | if (u->load_state != UNIT_STUB) |
a013b84b LP |
423 | if (UNIT_VTABLE(u)->done) |
424 | UNIT_VTABLE(u)->done(u); | |
425 | ||
a57f7e2c LP |
426 | unit_free_requires_mounts_for(u); |
427 | ||
ac155bb8 MS |
428 | SET_FOREACH(t, u->names, i) |
429 | hashmap_remove_value(u->manager->units, t, u); | |
87f0e418 | 430 | |
97e7d748 MS |
431 | if (u->job) { |
432 | Job *j = u->job; | |
433 | job_uninstall(j); | |
434 | job_free(j); | |
435 | } | |
964e0949 | 436 | |
e0209d83 MS |
437 | if (u->nop_job) { |
438 | Job *j = u->nop_job; | |
439 | job_uninstall(j); | |
440 | job_free(j); | |
441 | } | |
442 | ||
964e0949 | 443 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) |
ac155bb8 | 444 | bidi_set_free(u, u->dependencies[d]); |
964e0949 | 445 | |
ac155bb8 | 446 | if (u->type != _UNIT_TYPE_INVALID) |
71fda00f | 447 | LIST_REMOVE(units_by_type, u->manager->units_by_type[u->type], u); |
ef734fd6 | 448 | |
ac155bb8 | 449 | if (u->in_load_queue) |
71fda00f | 450 | LIST_REMOVE(load_queue, u->manager->load_queue, u); |
87f0e418 | 451 | |
ac155bb8 | 452 | if (u->in_dbus_queue) |
71fda00f | 453 | LIST_REMOVE(dbus_queue, u->manager->dbus_unit_queue, u); |
c1e1601e | 454 | |
ac155bb8 | 455 | if (u->in_cleanup_queue) |
71fda00f | 456 | LIST_REMOVE(cleanup_queue, u->manager->cleanup_queue, u); |
23a177ef | 457 | |
ac155bb8 | 458 | if (u->in_gc_queue) { |
71fda00f | 459 | LIST_REMOVE(gc_queue, u->manager->gc_queue, u); |
ac155bb8 | 460 | u->manager->n_in_gc_queue--; |
701cc384 LP |
461 | } |
462 | ||
4ad49000 | 463 | if (u->in_cgroup_queue) |
71fda00f | 464 | LIST_REMOVE(cgroup_queue, u->manager->cgroup_queue, u); |
87f0e418 | 465 | |
72673e86 LP |
466 | if (u->cgroup_path) { |
467 | hashmap_remove(u->manager->cgroup_unit, u->cgroup_path); | |
468 | free(u->cgroup_path); | |
469 | } | |
470 | ||
ac155bb8 | 471 | free(u->description); |
49dbfa7b | 472 | strv_free(u->documentation); |
ac155bb8 | 473 | free(u->fragment_path); |
1b64d026 | 474 | free(u->source_path); |
ae7a7182 | 475 | strv_free(u->dropin_paths); |
ac155bb8 | 476 | free(u->instance); |
87f0e418 | 477 | |
ac155bb8 | 478 | set_free_free(u->names); |
87f0e418 | 479 | |
ac155bb8 | 480 | condition_free_list(u->conditions); |
52661efd | 481 | |
702a2d8f LP |
482 | unit_ref_unset(&u->slice); |
483 | ||
ac155bb8 MS |
484 | while (u->refs) |
485 | unit_ref_unset(u->refs); | |
57020a3a | 486 | |
87f0e418 LP |
487 | free(u); |
488 | } | |
489 | ||
490 | UnitActiveState unit_active_state(Unit *u) { | |
491 | assert(u); | |
492 | ||
ac155bb8 | 493 | if (u->load_state == UNIT_MERGED) |
6124958c LP |
494 | return unit_active_state(unit_follow_merge(u)); |
495 | ||
496 | /* After a reload it might happen that a unit is not correctly | |
497 | * loaded but still has a process around. That's why we won't | |
fdf20a31 | 498 | * shortcut failed loading to UNIT_INACTIVE_FAILED. */ |
87f0e418 LP |
499 | |
500 | return UNIT_VTABLE(u)->active_state(u); | |
501 | } | |
502 | ||
10a94420 LP |
503 | const char* unit_sub_state_to_string(Unit *u) { |
504 | assert(u); | |
505 | ||
506 | return UNIT_VTABLE(u)->sub_state_to_string(u); | |
507 | } | |
508 | ||
23a177ef LP |
509 | static void complete_move(Set **s, Set **other) { |
510 | assert(s); | |
511 | assert(other); | |
87f0e418 | 512 | |
23a177ef LP |
513 | if (!*other) |
514 | return; | |
87f0e418 LP |
515 | |
516 | if (*s) | |
23a177ef LP |
517 | set_move(*s, *other); |
518 | else { | |
519 | *s = *other; | |
520 | *other = NULL; | |
521 | } | |
522 | } | |
87f0e418 | 523 | |
23a177ef LP |
524 | static void merge_names(Unit *u, Unit *other) { |
525 | char *t; | |
526 | Iterator i; | |
87f0e418 | 527 | |
23a177ef LP |
528 | assert(u); |
529 | assert(other); | |
530 | ||
ac155bb8 | 531 | complete_move(&u->names, &other->names); |
23a177ef | 532 | |
ac155bb8 MS |
533 | set_free_free(other->names); |
534 | other->names = NULL; | |
535 | other->id = NULL; | |
23a177ef | 536 | |
ac155bb8 MS |
537 | SET_FOREACH(t, u->names, i) |
538 | assert_se(hashmap_replace(u->manager->units, t, u) == 0); | |
87f0e418 LP |
539 | } |
540 | ||
23a177ef LP |
541 | static void merge_dependencies(Unit *u, Unit *other, UnitDependency d) { |
542 | Iterator i; | |
543 | Unit *back; | |
87f0e418 | 544 | int r; |
23a177ef LP |
545 | |
546 | assert(u); | |
547 | assert(other); | |
548 | assert(d < _UNIT_DEPENDENCY_MAX); | |
549 | ||
83a95334 | 550 | /* Fix backwards pointers */ |
ac155bb8 | 551 | SET_FOREACH(back, other->dependencies[d], i) { |
23a177ef LP |
552 | UnitDependency k; |
553 | ||
e48614c4 ZJS |
554 | for (k = 0; k < _UNIT_DEPENDENCY_MAX; k++) { |
555 | r = set_remove_and_put(back->dependencies[k], other, u); | |
556 | if (r == -EEXIST) | |
557 | set_remove(back->dependencies[k], other); | |
558 | else | |
559 | assert(r >= 0 || r == -ENOENT); | |
560 | } | |
23a177ef LP |
561 | } |
562 | ||
ac155bb8 | 563 | complete_move(&u->dependencies[d], &other->dependencies[d]); |
23a177ef | 564 | |
ac155bb8 MS |
565 | set_free(other->dependencies[d]); |
566 | other->dependencies[d] = NULL; | |
23a177ef LP |
567 | } |
568 | ||
569 | int unit_merge(Unit *u, Unit *other) { | |
87f0e418 LP |
570 | UnitDependency d; |
571 | ||
572 | assert(u); | |
573 | assert(other); | |
ac155bb8 MS |
574 | assert(u->manager == other->manager); |
575 | assert(u->type != _UNIT_TYPE_INVALID); | |
87f0e418 | 576 | |
cc916967 LP |
577 | other = unit_follow_merge(other); |
578 | ||
23a177ef LP |
579 | if (other == u) |
580 | return 0; | |
581 | ||
ac155bb8 | 582 | if (u->type != other->type) |
9e2f7c11 LP |
583 | return -EINVAL; |
584 | ||
ac155bb8 | 585 | if (!u->instance != !other->instance) |
87f0e418 LP |
586 | return -EINVAL; |
587 | ||
ac155bb8 | 588 | if (other->load_state != UNIT_STUB && |
c2756a68 | 589 | other->load_state != UNIT_NOT_FOUND) |
23a177ef | 590 | return -EEXIST; |
87f0e418 | 591 | |
ac155bb8 | 592 | if (other->job) |
819e213f LP |
593 | return -EEXIST; |
594 | ||
e0209d83 MS |
595 | if (other->nop_job) |
596 | return -EEXIST; | |
597 | ||
fdf20a31 | 598 | if (!UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other))) |
819e213f LP |
599 | return -EEXIST; |
600 | ||
87f0e418 | 601 | /* Merge names */ |
23a177ef | 602 | merge_names(u, other); |
87f0e418 | 603 | |
57020a3a | 604 | /* Redirect all references */ |
ac155bb8 MS |
605 | while (other->refs) |
606 | unit_ref_set(other->refs, u); | |
57020a3a | 607 | |
87f0e418 LP |
608 | /* Merge dependencies */ |
609 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) | |
23a177ef | 610 | merge_dependencies(u, other, d); |
87f0e418 | 611 | |
ac155bb8 MS |
612 | other->load_state = UNIT_MERGED; |
613 | other->merged_into = u; | |
23a177ef | 614 | |
3616a49c LP |
615 | /* If there is still some data attached to the other node, we |
616 | * don't need it anymore, and can free it. */ | |
ac155bb8 | 617 | if (other->load_state != UNIT_STUB) |
3616a49c LP |
618 | if (UNIT_VTABLE(other)->done) |
619 | UNIT_VTABLE(other)->done(other); | |
620 | ||
621 | unit_add_to_dbus_queue(u); | |
23a177ef LP |
622 | unit_add_to_cleanup_queue(other); |
623 | ||
624 | return 0; | |
625 | } | |
626 | ||
627 | int unit_merge_by_name(Unit *u, const char *name) { | |
628 | Unit *other; | |
9e2f7c11 | 629 | int r; |
68eda4bd | 630 | _cleanup_free_ char *s = NULL; |
23a177ef LP |
631 | |
632 | assert(u); | |
633 | assert(name); | |
634 | ||
9e2f7c11 | 635 | if (unit_name_is_template(name)) { |
ac155bb8 | 636 | if (!u->instance) |
9e2f7c11 LP |
637 | return -EINVAL; |
638 | ||
e48614c4 ZJS |
639 | s = unit_name_replace_instance(name, u->instance); |
640 | if (!s) | |
9e2f7c11 LP |
641 | return -ENOMEM; |
642 | ||
643 | name = s; | |
644 | } | |
645 | ||
c2756a68 LP |
646 | other = manager_get_unit(u->manager, name); |
647 | if (!other) | |
9e2f7c11 LP |
648 | r = unit_add_name(u, name); |
649 | else | |
650 | r = unit_merge(u, other); | |
23a177ef | 651 | |
9e2f7c11 | 652 | return r; |
23a177ef LP |
653 | } |
654 | ||
655 | Unit* unit_follow_merge(Unit *u) { | |
656 | assert(u); | |
657 | ||
ac155bb8 MS |
658 | while (u->load_state == UNIT_MERGED) |
659 | assert_se(u = u->merged_into); | |
23a177ef LP |
660 | |
661 | return u; | |
662 | } | |
663 | ||
664 | int unit_add_exec_dependencies(Unit *u, ExecContext *c) { | |
665 | int r; | |
666 | ||
667 | assert(u); | |
668 | assert(c); | |
669 | ||
ecc6e2b8 LP |
670 | if (c->std_output != EXEC_OUTPUT_KMSG && |
671 | c->std_output != EXEC_OUTPUT_SYSLOG && | |
706343f4 | 672 | c->std_output != EXEC_OUTPUT_JOURNAL && |
28dbc1e8 LP |
673 | c->std_output != EXEC_OUTPUT_KMSG_AND_CONSOLE && |
674 | c->std_output != EXEC_OUTPUT_SYSLOG_AND_CONSOLE && | |
706343f4 | 675 | c->std_output != EXEC_OUTPUT_JOURNAL_AND_CONSOLE && |
ecc6e2b8 | 676 | c->std_error != EXEC_OUTPUT_KMSG && |
085c98af | 677 | c->std_error != EXEC_OUTPUT_SYSLOG && |
706343f4 | 678 | c->std_error != EXEC_OUTPUT_JOURNAL && |
085c98af | 679 | c->std_error != EXEC_OUTPUT_KMSG_AND_CONSOLE && |
706343f4 | 680 | c->std_error != EXEC_OUTPUT_JOURNAL_AND_CONSOLE && |
28dbc1e8 | 681 | c->std_error != EXEC_OUTPUT_SYSLOG_AND_CONSOLE) |
23a177ef LP |
682 | return 0; |
683 | ||
684 | /* If syslog or kernel logging is requested, make sure our own | |
685 | * logging daemon is run first. */ | |
686 | ||
9d246da3 MS |
687 | if (u->manager->running_as == SYSTEMD_SYSTEM) { |
688 | r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_JOURNALD_SOCKET, NULL, true); | |
689 | if (r < 0) | |
23a177ef | 690 | return r; |
9d246da3 | 691 | } |
23a177ef | 692 | |
87f0e418 LP |
693 | return 0; |
694 | } | |
695 | ||
87f0e418 LP |
696 | const char *unit_description(Unit *u) { |
697 | assert(u); | |
698 | ||
ac155bb8 MS |
699 | if (u->description) |
700 | return u->description; | |
87f0e418 | 701 | |
ac155bb8 | 702 | return strna(u->id); |
87f0e418 LP |
703 | } |
704 | ||
705 | void unit_dump(Unit *u, FILE *f, const char *prefix) { | |
49dbfa7b | 706 | char *t, **j; |
87f0e418 LP |
707 | UnitDependency d; |
708 | Iterator i; | |
68eda4bd | 709 | _cleanup_free_ char *p2 = NULL; |
47be870b | 710 | const char *prefix2; |
173e3821 LP |
711 | char |
712 | timestamp1[FORMAT_TIMESTAMP_MAX], | |
713 | timestamp2[FORMAT_TIMESTAMP_MAX], | |
714 | timestamp3[FORMAT_TIMESTAMP_MAX], | |
faf919f1 LP |
715 | timestamp4[FORMAT_TIMESTAMP_MAX], |
716 | timespan[FORMAT_TIMESPAN_MAX]; | |
a7f241db | 717 | Unit *following; |
87f0e418 LP |
718 | |
719 | assert(u); | |
ac155bb8 | 720 | assert(u->type >= 0); |
87f0e418 LP |
721 | |
722 | if (!prefix) | |
723 | prefix = ""; | |
47be870b LP |
724 | p2 = strappend(prefix, "\t"); |
725 | prefix2 = p2 ? p2 : prefix; | |
87f0e418 LP |
726 | |
727 | fprintf(f, | |
40d50879 | 728 | "%s-> Unit %s:\n" |
87f0e418 | 729 | "%s\tDescription: %s\n" |
9e2f7c11 | 730 | "%s\tInstance: %s\n" |
87f0e418 | 731 | "%s\tUnit Load State: %s\n" |
2fad8195 | 732 | "%s\tUnit Active State: %s\n" |
173e3821 | 733 | "%s\tInactive Exit Timestamp: %s\n" |
2fad8195 | 734 | "%s\tActive Enter Timestamp: %s\n" |
701cc384 | 735 | "%s\tActive Exit Timestamp: %s\n" |
173e3821 | 736 | "%s\tInactive Enter Timestamp: %s\n" |
45fb0699 | 737 | "%s\tGC Check Good: %s\n" |
9444b1f2 | 738 | "%s\tNeed Daemon Reload: %s\n" |
c2756a68 | 739 | "%s\tTransient: %s\n" |
4ad49000 LP |
740 | "%s\tSlice: %s\n" |
741 | "%s\tCGroup: %s\n" | |
742 | "%s\tCGroup realized: %s\n" | |
743 | "%s\tCGroup mask: 0x%x\n", | |
ac155bb8 | 744 | prefix, u->id, |
87f0e418 | 745 | prefix, unit_description(u), |
ac155bb8 MS |
746 | prefix, strna(u->instance), |
747 | prefix, unit_load_state_to_string(u->load_state), | |
2fad8195 | 748 | prefix, unit_active_state_to_string(unit_active_state(u)), |
ac155bb8 MS |
749 | prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->inactive_exit_timestamp.realtime)), |
750 | prefix, strna(format_timestamp(timestamp2, sizeof(timestamp2), u->active_enter_timestamp.realtime)), | |
751 | prefix, strna(format_timestamp(timestamp3, sizeof(timestamp3), u->active_exit_timestamp.realtime)), | |
752 | prefix, strna(format_timestamp(timestamp4, sizeof(timestamp4), u->inactive_enter_timestamp.realtime)), | |
45fb0699 | 753 | prefix, yes_no(unit_check_gc(u)), |
9444b1f2 | 754 | prefix, yes_no(unit_need_daemon_reload(u)), |
c2756a68 | 755 | prefix, yes_no(u->transient), |
4ad49000 LP |
756 | prefix, strna(unit_slice_name(u)), |
757 | prefix, strna(u->cgroup_path), | |
758 | prefix, yes_no(u->cgroup_realized), | |
759 | prefix, u->cgroup_mask); | |
0301abf4 | 760 | |
ac155bb8 | 761 | SET_FOREACH(t, u->names, i) |
87f0e418 LP |
762 | fprintf(f, "%s\tName: %s\n", prefix, t); |
763 | ||
49dbfa7b LP |
764 | STRV_FOREACH(j, u->documentation) |
765 | fprintf(f, "%s\tDocumentation: %s\n", prefix, *j); | |
766 | ||
a7f241db | 767 | if ((following = unit_following(u))) |
ac155bb8 | 768 | fprintf(f, "%s\tFollowing: %s\n", prefix, following->id); |
8fe914ec | 769 | |
ac155bb8 MS |
770 | if (u->fragment_path) |
771 | fprintf(f, "%s\tFragment Path: %s\n", prefix, u->fragment_path); | |
23a177ef | 772 | |
1b64d026 LP |
773 | if (u->source_path) |
774 | fprintf(f, "%s\tSource Path: %s\n", prefix, u->source_path); | |
775 | ||
ae7a7182 | 776 | STRV_FOREACH(j, u->dropin_paths) |
2875e22b | 777 | fprintf(f, "%s\tDropIn Path: %s\n", prefix, *j); |
ae7a7182 | 778 | |
ac155bb8 | 779 | if (u->job_timeout > 0) |
2fa4092c | 780 | fprintf(f, "%s\tJob Timeout: %s\n", prefix, format_timespan(timespan, sizeof(timespan), u->job_timeout, 0)); |
faf919f1 | 781 | |
ac155bb8 | 782 | condition_dump_list(u->conditions, f, prefix); |
52661efd | 783 | |
ac155bb8 | 784 | if (dual_timestamp_is_set(&u->condition_timestamp)) |
2791a8f8 LP |
785 | fprintf(f, |
786 | "%s\tCondition Timestamp: %s\n" | |
787 | "%s\tCondition Result: %s\n", | |
ac155bb8 MS |
788 | prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->condition_timestamp.realtime)), |
789 | prefix, yes_no(u->condition_result)); | |
2791a8f8 | 790 | |
87f0e418 LP |
791 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) { |
792 | Unit *other; | |
793 | ||
ac155bb8 MS |
794 | SET_FOREACH(other, u->dependencies[d], i) |
795 | fprintf(f, "%s\t%s: %s\n", prefix, unit_dependency_to_string(d), other->id); | |
87f0e418 LP |
796 | } |
797 | ||
7c8fa05c | 798 | if (!strv_isempty(u->requires_mounts_for)) { |
7c8fa05c LP |
799 | fprintf(f, |
800 | "%s\tRequiresMountsFor:", prefix); | |
801 | ||
802 | STRV_FOREACH(j, u->requires_mounts_for) | |
803 | fprintf(f, " %s", *j); | |
804 | ||
805 | fputs("\n", f); | |
806 | } | |
807 | ||
ac155bb8 | 808 | if (u->load_state == UNIT_LOADED) { |
ab1f0633 | 809 | |
b0650475 | 810 | fprintf(f, |
a40eb732 | 811 | "%s\tStopWhenUnneeded: %s\n" |
b5e9dba8 LP |
812 | "%s\tRefuseManualStart: %s\n" |
813 | "%s\tRefuseManualStop: %s\n" | |
222ae6a8 | 814 | "%s\tDefaultDependencies: %s\n" |
c8f4d764 | 815 | "%s\tOnFailureIsolate: %s\n" |
7a6000a6 LP |
816 | "%s\tIgnoreOnIsolate: %s\n" |
817 | "%s\tIgnoreOnSnapshot: %s\n", | |
ac155bb8 MS |
818 | prefix, yes_no(u->stop_when_unneeded), |
819 | prefix, yes_no(u->refuse_manual_start), | |
820 | prefix, yes_no(u->refuse_manual_stop), | |
821 | prefix, yes_no(u->default_dependencies), | |
822 | prefix, yes_no(u->on_failure_isolate), | |
823 | prefix, yes_no(u->ignore_on_isolate), | |
824 | prefix, yes_no(u->ignore_on_snapshot)); | |
825 | ||
23a177ef LP |
826 | if (UNIT_VTABLE(u)->dump) |
827 | UNIT_VTABLE(u)->dump(u, f, prefix2); | |
b0650475 | 828 | |
ac155bb8 | 829 | } else if (u->load_state == UNIT_MERGED) |
b0650475 LP |
830 | fprintf(f, |
831 | "%s\tMerged into: %s\n", | |
ac155bb8 MS |
832 | prefix, u->merged_into->id); |
833 | else if (u->load_state == UNIT_ERROR) | |
834 | fprintf(f, "%s\tLoad Error Code: %s\n", prefix, strerror(-u->load_error)); | |
8821a00f | 835 | |
87f0e418 | 836 | |
ac155bb8 MS |
837 | if (u->job) |
838 | job_dump(u->job, f, prefix2); | |
87f0e418 | 839 | |
e0209d83 MS |
840 | if (u->nop_job) |
841 | job_dump(u->nop_job, f, prefix2); | |
842 | ||
87f0e418 LP |
843 | } |
844 | ||
845 | /* Common implementation for multiple backends */ | |
e537352b | 846 | int unit_load_fragment_and_dropin(Unit *u) { |
23a177ef LP |
847 | int r; |
848 | ||
849 | assert(u); | |
23a177ef | 850 | |
e48614c4 | 851 | /* Load a .{service,socket,...} file */ |
4ad49000 LP |
852 | r = unit_load_fragment(u); |
853 | if (r < 0) | |
23a177ef LP |
854 | return r; |
855 | ||
ac155bb8 | 856 | if (u->load_state == UNIT_STUB) |
23a177ef LP |
857 | return -ENOENT; |
858 | ||
859 | /* Load drop-in directory data */ | |
4ad49000 LP |
860 | r = unit_load_dropin(unit_follow_merge(u)); |
861 | if (r < 0) | |
23a177ef LP |
862 | return r; |
863 | ||
864 | return 0; | |
865 | } | |
866 | ||
867 | /* Common implementation for multiple backends */ | |
e537352b | 868 | int unit_load_fragment_and_dropin_optional(Unit *u) { |
23a177ef | 869 | int r; |
87f0e418 LP |
870 | |
871 | assert(u); | |
872 | ||
23a177ef LP |
873 | /* Same as unit_load_fragment_and_dropin(), but whether |
874 | * something can be loaded or not doesn't matter. */ | |
875 | ||
876 | /* Load a .service file */ | |
4ad49000 LP |
877 | r = unit_load_fragment(u); |
878 | if (r < 0) | |
87f0e418 LP |
879 | return r; |
880 | ||
ac155bb8 MS |
881 | if (u->load_state == UNIT_STUB) |
882 | u->load_state = UNIT_LOADED; | |
d46de8a1 | 883 | |
87f0e418 | 884 | /* Load drop-in directory data */ |
4ad49000 LP |
885 | r = unit_load_dropin(unit_follow_merge(u)); |
886 | if (r < 0) | |
87f0e418 LP |
887 | return r; |
888 | ||
23a177ef | 889 | return 0; |
87f0e418 LP |
890 | } |
891 | ||
bba34eed | 892 | int unit_add_default_target_dependency(Unit *u, Unit *target) { |
98bc2000 LP |
893 | assert(u); |
894 | assert(target); | |
895 | ||
ac155bb8 | 896 | if (target->type != UNIT_TARGET) |
98bc2000 LP |
897 | return 0; |
898 | ||
35b8ca3a | 899 | /* Only add the dependency if both units are loaded, so that |
bba34eed | 900 | * that loop check below is reliable */ |
ac155bb8 MS |
901 | if (u->load_state != UNIT_LOADED || |
902 | target->load_state != UNIT_LOADED) | |
bba34eed LP |
903 | return 0; |
904 | ||
21256a2b LP |
905 | /* If either side wants no automatic dependencies, then let's |
906 | * skip this */ | |
ac155bb8 MS |
907 | if (!u->default_dependencies || |
908 | !target->default_dependencies) | |
21256a2b LP |
909 | return 0; |
910 | ||
98bc2000 | 911 | /* Don't create loops */ |
ac155bb8 | 912 | if (set_get(target->dependencies[UNIT_BEFORE], u)) |
98bc2000 LP |
913 | return 0; |
914 | ||
915 | return unit_add_dependency(target, UNIT_AFTER, u, true); | |
916 | } | |
917 | ||
918 | static int unit_add_default_dependencies(Unit *u) { | |
a016b922 | 919 | |
21256a2b LP |
920 | static const UnitDependency deps[] = { |
921 | UNIT_REQUIRED_BY, | |
922 | UNIT_REQUIRED_BY_OVERRIDABLE, | |
923 | UNIT_WANTED_BY, | |
924 | UNIT_BOUND_BY | |
925 | }; | |
926 | ||
bba34eed | 927 | Unit *target; |
98bc2000 LP |
928 | Iterator i; |
929 | int r; | |
21256a2b | 930 | unsigned k; |
98bc2000 LP |
931 | |
932 | assert(u); | |
933 | ||
21256a2b | 934 | for (k = 0; k < ELEMENTSOF(deps); k++) |
a016b922 LP |
935 | SET_FOREACH(target, u->dependencies[deps[k]], i) { |
936 | r = unit_add_default_target_dependency(u, target); | |
937 | if (r < 0) | |
21256a2b | 938 | return r; |
a016b922 LP |
939 | } |
940 | ||
4ad49000 LP |
941 | if (u->default_dependencies && unit_get_cgroup_context(u)) { |
942 | if (UNIT_ISSET(u->slice)) | |
943 | r = unit_add_two_dependencies(u, UNIT_AFTER, UNIT_WANTS, UNIT_DEREF(u->slice), true); | |
944 | else | |
945 | r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_WANTS, SPECIAL_ROOT_SLICE, NULL, true); | |
946 | ||
a016b922 LP |
947 | if (r < 0) |
948 | return r; | |
949 | } | |
b81884e7 | 950 | |
98bc2000 LP |
951 | return 0; |
952 | } | |
953 | ||
9588bc32 LP |
954 | static int unit_add_mount_links(Unit *u) { |
955 | char **i; | |
956 | int r; | |
957 | ||
958 | assert(u); | |
959 | ||
960 | STRV_FOREACH(i, u->requires_mounts_for) { | |
961 | char prefix[strlen(*i) + 1]; | |
962 | ||
963 | PATH_FOREACH_PREFIX_MORE(prefix, *i) { | |
964 | Unit *m; | |
965 | ||
966 | r = manager_get_unit_by_path(u->manager, prefix, ".mount", &m); | |
967 | if (r < 0) | |
968 | return r; | |
969 | if (r == 0) | |
970 | continue; | |
971 | if (m == u) | |
972 | continue; | |
973 | ||
974 | if (m->load_state != UNIT_LOADED) | |
975 | continue; | |
976 | ||
977 | r = unit_add_dependency(u, UNIT_AFTER, m, true); | |
978 | if (r < 0) | |
979 | return r; | |
980 | ||
981 | if (m->fragment_path) { | |
982 | r = unit_add_dependency(u, UNIT_REQUIRES, m, true); | |
983 | if (r < 0) | |
984 | return r; | |
985 | } | |
986 | } | |
987 | } | |
988 | ||
989 | return 0; | |
990 | } | |
991 | ||
87f0e418 LP |
992 | int unit_load(Unit *u) { |
993 | int r; | |
994 | ||
995 | assert(u); | |
996 | ||
ac155bb8 | 997 | if (u->in_load_queue) { |
71fda00f | 998 | LIST_REMOVE(load_queue, u->manager->load_queue, u); |
ac155bb8 | 999 | u->in_load_queue = false; |
87f0e418 LP |
1000 | } |
1001 | ||
ac155bb8 | 1002 | if (u->type == _UNIT_TYPE_INVALID) |
e537352b LP |
1003 | return -EINVAL; |
1004 | ||
ac155bb8 | 1005 | if (u->load_state != UNIT_STUB) |
87f0e418 LP |
1006 | return 0; |
1007 | ||
c2756a68 LP |
1008 | if (UNIT_VTABLE(u)->load) { |
1009 | r = UNIT_VTABLE(u)->load(u); | |
1010 | if (r < 0) | |
87f0e418 | 1011 | goto fail; |
c2756a68 | 1012 | } |
23a177ef | 1013 | |
ac155bb8 | 1014 | if (u->load_state == UNIT_STUB) { |
23a177ef LP |
1015 | r = -ENOENT; |
1016 | goto fail; | |
1017 | } | |
1018 | ||
7c8fa05c | 1019 | if (u->load_state == UNIT_LOADED) { |
c2756a68 LP |
1020 | |
1021 | if (u->default_dependencies) { | |
1022 | r = unit_add_default_dependencies(u); | |
1023 | if (r < 0) | |
1024 | goto fail; | |
1025 | } | |
1026 | ||
7c8fa05c LP |
1027 | r = unit_add_mount_links(u); |
1028 | if (r < 0) | |
c2756a68 | 1029 | goto fail; |
7c8fa05c | 1030 | |
c2756a68 LP |
1031 | if (u->on_failure_isolate && |
1032 | set_size(u->dependencies[UNIT_ON_FAILURE]) > 1) { | |
f68319bb | 1033 | |
c2756a68 LP |
1034 | log_error_unit(u->id, |
1035 | "More than one OnFailure= dependencies specified for %s but OnFailureIsolate= enabled. Refusing.", u->id); | |
f68319bb | 1036 | |
c2756a68 LP |
1037 | r = -EINVAL; |
1038 | goto fail; | |
1039 | } | |
f68319bb LP |
1040 | } |
1041 | ||
ac155bb8 | 1042 | assert((u->load_state != UNIT_MERGED) == !u->merged_into); |
23a177ef LP |
1043 | |
1044 | unit_add_to_dbus_queue(unit_follow_merge(u)); | |
701cc384 | 1045 | unit_add_to_gc_queue(u); |
87f0e418 | 1046 | |
87f0e418 LP |
1047 | return 0; |
1048 | ||
1049 | fail: | |
c2756a68 | 1050 | u->load_state = u->load_state == UNIT_STUB ? UNIT_NOT_FOUND : UNIT_ERROR; |
ac155bb8 | 1051 | u->load_error = r; |
c1e1601e | 1052 | unit_add_to_dbus_queue(u); |
9a46fc3b | 1053 | unit_add_to_gc_queue(u); |
23a177ef | 1054 | |
c1b6628d ZJS |
1055 | log_debug_unit(u->id, "Failed to load configuration for %s: %s", |
1056 | u->id, strerror(-r)); | |
23a177ef | 1057 | |
87f0e418 LP |
1058 | return r; |
1059 | } | |
1060 | ||
9588bc32 | 1061 | static bool unit_condition_test(Unit *u) { |
90bbc946 LP |
1062 | assert(u); |
1063 | ||
ac155bb8 | 1064 | dual_timestamp_get(&u->condition_timestamp); |
4b744dfa | 1065 | u->condition_result = condition_test_list(u->id, u->conditions); |
90bbc946 | 1066 | |
ac155bb8 | 1067 | return u->condition_result; |
90bbc946 LP |
1068 | } |
1069 | ||
44a6b1b6 | 1070 | _pure_ static const char* unit_get_status_message_format(Unit *u, JobType t) { |
c6918296 | 1071 | const UnitStatusMessageFormats *format_table; |
877d54e9 LP |
1072 | |
1073 | assert(u); | |
1074 | assert(t >= 0); | |
1075 | assert(t < _JOB_TYPE_MAX); | |
1076 | ||
1077 | if (t != JOB_START && t != JOB_STOP) | |
1078 | return NULL; | |
c6918296 MS |
1079 | |
1080 | format_table = &UNIT_VTABLE(u)->status_message_formats; | |
1081 | if (!format_table) | |
877d54e9 LP |
1082 | return NULL; |
1083 | ||
1084 | return format_table->starting_stopping[t == JOB_STOP]; | |
1085 | } | |
1086 | ||
44a6b1b6 | 1087 | _pure_ static const char *unit_get_status_message_format_try_harder(Unit *u, JobType t) { |
877d54e9 LP |
1088 | const char *format; |
1089 | ||
1090 | assert(u); | |
1091 | assert(t >= 0); | |
1092 | assert(t < _JOB_TYPE_MAX); | |
1093 | ||
1094 | format = unit_get_status_message_format(u, t); | |
1095 | if (format) | |
1096 | return format; | |
1097 | ||
1098 | /* Return generic strings */ | |
1099 | if (t == JOB_START) | |
1100 | return "Starting %s."; | |
1101 | else if (t == JOB_STOP) | |
1102 | return "Stopping %s."; | |
1103 | else if (t == JOB_RELOAD) | |
1104 | return "Reloading %s."; | |
1105 | ||
1106 | return NULL; | |
1107 | } | |
1108 | ||
1109 | static void unit_status_print_starting_stopping(Unit *u, JobType t) { | |
1110 | const char *format; | |
1111 | ||
1112 | assert(u); | |
1113 | ||
1114 | /* We only print status messages for selected units on | |
1115 | * selected operations. */ | |
c6918296 | 1116 | |
877d54e9 | 1117 | format = unit_get_status_message_format(u, t); |
c6918296 MS |
1118 | if (!format) |
1119 | return; | |
1120 | ||
49b1d377 | 1121 | unit_status_printf(u, "", format); |
c6918296 MS |
1122 | } |
1123 | ||
877d54e9 LP |
1124 | #pragma GCC diagnostic push |
1125 | #pragma GCC diagnostic ignored "-Wformat-nonliteral" | |
1126 | static void unit_status_log_starting_stopping_reloading(Unit *u, JobType t) { | |
1127 | const char *format; | |
1128 | char buf[LINE_MAX]; | |
1129 | sd_id128_t mid; | |
1130 | ||
1131 | assert(u); | |
1132 | ||
1133 | if (t != JOB_START && t != JOB_STOP && t != JOB_RELOAD) | |
1134 | return; | |
1135 | ||
81270860 LP |
1136 | if (log_on_console()) |
1137 | return; | |
1138 | ||
877d54e9 LP |
1139 | /* We log status messages for all units and all operations. */ |
1140 | ||
1141 | format = unit_get_status_message_format_try_harder(u, t); | |
1142 | if (!format) | |
1143 | return; | |
1144 | ||
1145 | snprintf(buf, sizeof(buf), format, unit_description(u)); | |
1146 | char_array_0(buf); | |
1147 | ||
1148 | mid = t == JOB_START ? SD_MESSAGE_UNIT_STARTING : | |
1149 | t == JOB_STOP ? SD_MESSAGE_UNIT_STOPPING : | |
1150 | SD_MESSAGE_UNIT_RELOADING; | |
1151 | ||
bbc9006e | 1152 | log_struct_unit(LOG_INFO, |
c1b6628d ZJS |
1153 | u->id, |
1154 | MESSAGE_ID(mid), | |
1155 | "MESSAGE=%s", buf, | |
1156 | NULL); | |
877d54e9 LP |
1157 | } |
1158 | #pragma GCC diagnostic pop | |
1159 | ||
87f0e418 | 1160 | /* Errors: |
d5159713 LP |
1161 | * -EBADR: This unit type does not support starting. |
1162 | * -EALREADY: Unit is already started. | |
1163 | * -EAGAIN: An operation is already in progress. Retry later. | |
1164 | * -ECANCELED: Too many requests for now. | |
87f0e418 LP |
1165 | */ |
1166 | int unit_start(Unit *u) { | |
1167 | UnitActiveState state; | |
92ab323c | 1168 | Unit *following; |
87f0e418 LP |
1169 | |
1170 | assert(u); | |
1171 | ||
ac155bb8 | 1172 | if (u->load_state != UNIT_LOADED) |
6124958c LP |
1173 | return -EINVAL; |
1174 | ||
a82e5507 LP |
1175 | /* If this is already started, then this will succeed. Note |
1176 | * that this will even succeed if this unit is not startable | |
1177 | * by the user. This is relied on to detect when we need to | |
1178 | * wait for units and when waiting is finished. */ | |
87f0e418 LP |
1179 | state = unit_active_state(u); |
1180 | if (UNIT_IS_ACTIVE_OR_RELOADING(state)) | |
1181 | return -EALREADY; | |
1182 | ||
a82e5507 LP |
1183 | /* If the conditions failed, don't do anything at all. If we |
1184 | * already are activating this call might still be useful to | |
1185 | * speed up activation in case there is some hold-off time, | |
1186 | * but we don't want to recheck the condition in that case. */ | |
1187 | if (state != UNIT_ACTIVATING && | |
1188 | !unit_condition_test(u)) { | |
c1b6628d | 1189 | log_debug_unit(u->id, "Starting of %s requested but condition failed. Ignoring.", u->id); |
52661efd LP |
1190 | return -EALREADY; |
1191 | } | |
1192 | ||
92ab323c | 1193 | /* Forward to the main object, if we aren't it. */ |
52990c2e ZJS |
1194 | following = unit_following(u); |
1195 | if (following) { | |
c1b6628d ZJS |
1196 | log_debug_unit(u->id, "Redirecting start request from %s to %s.", |
1197 | u->id, following->id); | |
92ab323c LP |
1198 | return unit_start(following); |
1199 | } | |
1200 | ||
877d54e9 LP |
1201 | unit_status_log_starting_stopping_reloading(u, JOB_START); |
1202 | unit_status_print_starting_stopping(u, JOB_START); | |
c6918296 | 1203 | |
92ab323c LP |
1204 | /* If it is stopped, but we cannot start it, then fail */ |
1205 | if (!UNIT_VTABLE(u)->start) | |
1206 | return -EBADR; | |
1207 | ||
87f0e418 LP |
1208 | /* We don't suppress calls to ->start() here when we are |
1209 | * already starting, to allow this request to be used as a | |
1210 | * "hurry up" call, for example when the unit is in some "auto | |
1211 | * restart" state where it waits for a holdoff timer to elapse | |
1212 | * before it will start again. */ | |
1213 | ||
c1e1601e | 1214 | unit_add_to_dbus_queue(u); |
9e58ff9c | 1215 | |
87f0e418 LP |
1216 | return UNIT_VTABLE(u)->start(u); |
1217 | } | |
1218 | ||
1219 | bool unit_can_start(Unit *u) { | |
1220 | assert(u); | |
1221 | ||
1222 | return !!UNIT_VTABLE(u)->start; | |
1223 | } | |
1224 | ||
2528a7a6 LP |
1225 | bool unit_can_isolate(Unit *u) { |
1226 | assert(u); | |
1227 | ||
1228 | return unit_can_start(u) && | |
ac155bb8 | 1229 | u->allow_isolate; |
2528a7a6 LP |
1230 | } |
1231 | ||
87f0e418 LP |
1232 | /* Errors: |
1233 | * -EBADR: This unit type does not support stopping. | |
1234 | * -EALREADY: Unit is already stopped. | |
1235 | * -EAGAIN: An operation is already in progress. Retry later. | |
1236 | */ | |
1237 | int unit_stop(Unit *u) { | |
1238 | UnitActiveState state; | |
92ab323c | 1239 | Unit *following; |
87f0e418 LP |
1240 | |
1241 | assert(u); | |
1242 | ||
87f0e418 | 1243 | state = unit_active_state(u); |
fdf20a31 | 1244 | if (UNIT_IS_INACTIVE_OR_FAILED(state)) |
87f0e418 LP |
1245 | return -EALREADY; |
1246 | ||
92ab323c | 1247 | if ((following = unit_following(u))) { |
c1b6628d ZJS |
1248 | log_debug_unit(u->id, "Redirecting stop request from %s to %s.", |
1249 | u->id, following->id); | |
92ab323c LP |
1250 | return unit_stop(following); |
1251 | } | |
1252 | ||
877d54e9 LP |
1253 | unit_status_log_starting_stopping_reloading(u, JOB_STOP); |
1254 | unit_status_print_starting_stopping(u, JOB_STOP); | |
c6918296 | 1255 | |
7898b0cf LP |
1256 | if (!UNIT_VTABLE(u)->stop) |
1257 | return -EBADR; | |
1258 | ||
c1e1601e | 1259 | unit_add_to_dbus_queue(u); |
9e58ff9c | 1260 | |
87f0e418 LP |
1261 | return UNIT_VTABLE(u)->stop(u); |
1262 | } | |
1263 | ||
1264 | /* Errors: | |
1265 | * -EBADR: This unit type does not support reloading. | |
1266 | * -ENOEXEC: Unit is not started. | |
1267 | * -EAGAIN: An operation is already in progress. Retry later. | |
1268 | */ | |
1269 | int unit_reload(Unit *u) { | |
1270 | UnitActiveState state; | |
92ab323c | 1271 | Unit *following; |
87f0e418 LP |
1272 | |
1273 | assert(u); | |
1274 | ||
ac155bb8 | 1275 | if (u->load_state != UNIT_LOADED) |
6124958c LP |
1276 | return -EINVAL; |
1277 | ||
87f0e418 LP |
1278 | if (!unit_can_reload(u)) |
1279 | return -EBADR; | |
1280 | ||
1281 | state = unit_active_state(u); | |
e364ad06 | 1282 | if (state == UNIT_RELOADING) |
87f0e418 LP |
1283 | return -EALREADY; |
1284 | ||
e364ad06 | 1285 | if (state != UNIT_ACTIVE) |
87f0e418 LP |
1286 | return -ENOEXEC; |
1287 | ||
e48614c4 ZJS |
1288 | following = unit_following(u); |
1289 | if (following) { | |
c1b6628d ZJS |
1290 | log_debug_unit(u->id, "Redirecting reload request from %s to %s.", |
1291 | u->id, following->id); | |
92ab323c LP |
1292 | return unit_reload(following); |
1293 | } | |
1294 | ||
877d54e9 LP |
1295 | unit_status_log_starting_stopping_reloading(u, JOB_RELOAD); |
1296 | ||
c1e1601e | 1297 | unit_add_to_dbus_queue(u); |
87f0e418 LP |
1298 | return UNIT_VTABLE(u)->reload(u); |
1299 | } | |
1300 | ||
1301 | bool unit_can_reload(Unit *u) { | |
1302 | assert(u); | |
1303 | ||
1304 | if (!UNIT_VTABLE(u)->reload) | |
1305 | return false; | |
1306 | ||
1307 | if (!UNIT_VTABLE(u)->can_reload) | |
1308 | return true; | |
1309 | ||
1310 | return UNIT_VTABLE(u)->can_reload(u); | |
1311 | } | |
1312 | ||
b4a16b7b | 1313 | static void unit_check_unneeded(Unit *u) { |
f3bff0eb LP |
1314 | Iterator i; |
1315 | Unit *other; | |
1316 | ||
1317 | assert(u); | |
1318 | ||
1319 | /* If this service shall be shut down when unneeded then do | |
1320 | * so. */ | |
1321 | ||
ac155bb8 | 1322 | if (!u->stop_when_unneeded) |
f3bff0eb LP |
1323 | return; |
1324 | ||
1325 | if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) | |
1326 | return; | |
1327 | ||
ac155bb8 | 1328 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRED_BY], i) |
31afa0a4 | 1329 | if (unit_active_or_pending(other)) |
f3bff0eb LP |
1330 | return; |
1331 | ||
ac155bb8 | 1332 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRED_BY_OVERRIDABLE], i) |
31afa0a4 | 1333 | if (unit_active_or_pending(other)) |
f3bff0eb LP |
1334 | return; |
1335 | ||
ac155bb8 | 1336 | SET_FOREACH(other, u->dependencies[UNIT_WANTED_BY], i) |
31afa0a4 | 1337 | if (unit_active_or_pending(other)) |
f3bff0eb LP |
1338 | return; |
1339 | ||
ac155bb8 | 1340 | SET_FOREACH(other, u->dependencies[UNIT_BOUND_BY], i) |
31afa0a4 | 1341 | if (unit_active_or_pending(other)) |
b81884e7 LP |
1342 | return; |
1343 | ||
c1b6628d | 1344 | log_info_unit(u->id, "Service %s is not needed anymore. Stopping.", u->id); |
f3bff0eb LP |
1345 | |
1346 | /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */ | |
ac155bb8 | 1347 | manager_add_job(u->manager, JOB_STOP, u, JOB_FAIL, true, NULL, NULL); |
f3bff0eb LP |
1348 | } |
1349 | ||
87f0e418 LP |
1350 | static void retroactively_start_dependencies(Unit *u) { |
1351 | Iterator i; | |
1352 | Unit *other; | |
1353 | ||
1354 | assert(u); | |
1355 | assert(UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))); | |
1356 | ||
ac155bb8 MS |
1357 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRES], i) |
1358 | if (!set_get(u->dependencies[UNIT_AFTER], other) && | |
b81884e7 | 1359 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
ac155bb8 | 1360 | manager_add_job(u->manager, JOB_START, other, JOB_REPLACE, true, NULL, NULL); |
b81884e7 | 1361 | |
7f2cddae | 1362 | SET_FOREACH(other, u->dependencies[UNIT_BINDS_TO], i) |
ac155bb8 | 1363 | if (!set_get(u->dependencies[UNIT_AFTER], other) && |
b81884e7 | 1364 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
ac155bb8 | 1365 | manager_add_job(u->manager, JOB_START, other, JOB_REPLACE, true, NULL, NULL); |
87f0e418 | 1366 | |
ac155bb8 MS |
1367 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRES_OVERRIDABLE], i) |
1368 | if (!set_get(u->dependencies[UNIT_AFTER], other) && | |
b81884e7 | 1369 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
ac155bb8 | 1370 | manager_add_job(u->manager, JOB_START, other, JOB_FAIL, false, NULL, NULL); |
87f0e418 | 1371 | |
ac155bb8 MS |
1372 | SET_FOREACH(other, u->dependencies[UNIT_WANTS], i) |
1373 | if (!set_get(u->dependencies[UNIT_AFTER], other) && | |
b81884e7 | 1374 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
ac155bb8 | 1375 | manager_add_job(u->manager, JOB_START, other, JOB_FAIL, false, NULL, NULL); |
87f0e418 | 1376 | |
ac155bb8 | 1377 | SET_FOREACH(other, u->dependencies[UNIT_CONFLICTS], i) |
b81884e7 | 1378 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
ac155bb8 | 1379 | manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL); |
69dd2852 | 1380 | |
ac155bb8 | 1381 | SET_FOREACH(other, u->dependencies[UNIT_CONFLICTED_BY], i) |
b81884e7 | 1382 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
ac155bb8 | 1383 | manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL); |
87f0e418 LP |
1384 | } |
1385 | ||
1386 | static void retroactively_stop_dependencies(Unit *u) { | |
1387 | Iterator i; | |
1388 | Unit *other; | |
1389 | ||
1390 | assert(u); | |
1391 | assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))); | |
1392 | ||
b81884e7 | 1393 | /* Pull down units which are bound to us recursively if enabled */ |
ac155bb8 | 1394 | SET_FOREACH(other, u->dependencies[UNIT_BOUND_BY], i) |
b81884e7 | 1395 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
ac155bb8 | 1396 | manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL); |
cd0504d0 MS |
1397 | } |
1398 | ||
1399 | static void check_unneeded_dependencies(Unit *u) { | |
1400 | Iterator i; | |
1401 | Unit *other; | |
1402 | ||
1403 | assert(u); | |
1404 | assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))); | |
f3bff0eb LP |
1405 | |
1406 | /* Garbage collect services that might not be needed anymore, if enabled */ | |
ac155bb8 | 1407 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRES], i) |
87f0e418 | 1408 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1409 | unit_check_unneeded(other); |
ac155bb8 | 1410 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRES_OVERRIDABLE], i) |
f3bff0eb | 1411 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1412 | unit_check_unneeded(other); |
ac155bb8 | 1413 | SET_FOREACH(other, u->dependencies[UNIT_WANTS], i) |
f3bff0eb | 1414 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1415 | unit_check_unneeded(other); |
ac155bb8 | 1416 | SET_FOREACH(other, u->dependencies[UNIT_REQUISITE], i) |
f3bff0eb | 1417 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1418 | unit_check_unneeded(other); |
ac155bb8 | 1419 | SET_FOREACH(other, u->dependencies[UNIT_REQUISITE_OVERRIDABLE], i) |
f3bff0eb | 1420 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1421 | unit_check_unneeded(other); |
7f2cddae | 1422 | SET_FOREACH(other, u->dependencies[UNIT_BINDS_TO], i) |
b81884e7 LP |
1423 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
1424 | unit_check_unneeded(other); | |
87f0e418 LP |
1425 | } |
1426 | ||
3ecaa09b | 1427 | void unit_start_on_failure(Unit *u) { |
c0daa706 LP |
1428 | Unit *other; |
1429 | Iterator i; | |
1430 | ||
1431 | assert(u); | |
1432 | ||
ac155bb8 | 1433 | if (set_size(u->dependencies[UNIT_ON_FAILURE]) <= 0) |
222ae6a8 LP |
1434 | return; |
1435 | ||
c1b6628d | 1436 | log_info_unit(u->id, "Triggering OnFailure= dependencies of %s.", u->id); |
222ae6a8 | 1437 | |
ac155bb8 | 1438 | SET_FOREACH(other, u->dependencies[UNIT_ON_FAILURE], i) { |
222ae6a8 LP |
1439 | int r; |
1440 | ||
c1b6628d ZJS |
1441 | r = manager_add_job(u->manager, JOB_START, other, u->on_failure_isolate ? JOB_ISOLATE : JOB_REPLACE, true, NULL, NULL); |
1442 | if (r < 0) | |
1443 | log_error_unit(u->id, "Failed to enqueue OnFailure= job: %s", strerror(-r)); | |
222ae6a8 | 1444 | } |
c0daa706 LP |
1445 | } |
1446 | ||
3ecaa09b LP |
1447 | void unit_trigger_notify(Unit *u) { |
1448 | Unit *other; | |
1449 | Iterator i; | |
1450 | ||
1451 | assert(u); | |
1452 | ||
1453 | SET_FOREACH(other, u->dependencies[UNIT_TRIGGERED_BY], i) | |
1454 | if (UNIT_VTABLE(other)->trigger_notify) | |
1455 | UNIT_VTABLE(other)->trigger_notify(other, u); | |
1456 | } | |
1457 | ||
e2f3b44c | 1458 | void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_success) { |
546ac4f0 | 1459 | Manager *m; |
7e6e7b06 | 1460 | bool unexpected; |
a096ed36 | 1461 | |
87f0e418 LP |
1462 | assert(u); |
1463 | assert(os < _UNIT_ACTIVE_STATE_MAX); | |
1464 | assert(ns < _UNIT_ACTIVE_STATE_MAX); | |
87f0e418 | 1465 | |
8e471ccd LP |
1466 | /* Note that this is called for all low-level state changes, |
1467 | * even if they might map to the same high-level | |
1468 | * UnitActiveState! That means that ns == os is OK an expected | |
c5315881 | 1469 | * behavior here. For example: if a mount point is remounted |
cd6d0a45 | 1470 | * this function will be called too! */ |
87f0e418 | 1471 | |
546ac4f0 MS |
1472 | m = u->manager; |
1473 | ||
1474 | if (m->n_reloading <= 0) { | |
bdbf9951 | 1475 | dual_timestamp ts; |
173e3821 | 1476 | |
bdbf9951 | 1477 | dual_timestamp_get(&ts); |
173e3821 | 1478 | |
bdbf9951 | 1479 | if (UNIT_IS_INACTIVE_OR_FAILED(os) && !UNIT_IS_INACTIVE_OR_FAILED(ns)) |
ac155bb8 | 1480 | u->inactive_exit_timestamp = ts; |
bdbf9951 | 1481 | else if (!UNIT_IS_INACTIVE_OR_FAILED(os) && UNIT_IS_INACTIVE_OR_FAILED(ns)) |
ac155bb8 | 1482 | u->inactive_enter_timestamp = ts; |
bdbf9951 LP |
1483 | |
1484 | if (!UNIT_IS_ACTIVE_OR_RELOADING(os) && UNIT_IS_ACTIVE_OR_RELOADING(ns)) | |
ac155bb8 | 1485 | u->active_enter_timestamp = ts; |
bdbf9951 | 1486 | else if (UNIT_IS_ACTIVE_OR_RELOADING(os) && !UNIT_IS_ACTIVE_OR_RELOADING(ns)) |
ac155bb8 | 1487 | u->active_exit_timestamp = ts; |
bdbf9951 | 1488 | } |
87f0e418 | 1489 | |
fdf20a31 | 1490 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
4ad49000 | 1491 | unit_destroy_cgroup(u); |
fb385181 | 1492 | |
7ed9f6cd MS |
1493 | if (UNIT_IS_INACTIVE_OR_FAILED(os) != UNIT_IS_INACTIVE_OR_FAILED(ns)) { |
1494 | ExecContext *ec = unit_get_exec_context(u); | |
1495 | if (ec && exec_context_may_touch_console(ec)) { | |
31a7eb86 ZJS |
1496 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) { |
1497 | m->n_on_console --; | |
1498 | ||
1499 | if (m->n_on_console == 0) | |
1500 | /* unset no_console_output flag, since the console is free */ | |
2f38577f | 1501 | m->no_console_output = false; |
31a7eb86 ZJS |
1502 | } else |
1503 | m->n_on_console ++; | |
7ed9f6cd MS |
1504 | } |
1505 | } | |
1506 | ||
ac155bb8 | 1507 | if (u->job) { |
7e6e7b06 | 1508 | unexpected = false; |
87f0e418 | 1509 | |
ac155bb8 | 1510 | if (u->job->state == JOB_WAITING) |
87f0e418 LP |
1511 | |
1512 | /* So we reached a different state for this | |
1513 | * job. Let's see if we can run it now if it | |
1514 | * failed previously due to EAGAIN. */ | |
ac155bb8 | 1515 | job_add_to_run_queue(u->job); |
87f0e418 | 1516 | |
b410e6b9 | 1517 | /* Let's check whether this state change constitutes a |
35b8ca3a | 1518 | * finished job, or maybe contradicts a running job and |
b410e6b9 | 1519 | * hence needs to invalidate jobs. */ |
87f0e418 | 1520 | |
ac155bb8 | 1521 | switch (u->job->type) { |
87f0e418 | 1522 | |
b410e6b9 LP |
1523 | case JOB_START: |
1524 | case JOB_VERIFY_ACTIVE: | |
87f0e418 | 1525 | |
b410e6b9 | 1526 | if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) |
5273510e | 1527 | job_finish_and_invalidate(u->job, JOB_DONE, true); |
ac155bb8 | 1528 | else if (u->job->state == JOB_RUNNING && ns != UNIT_ACTIVATING) { |
b410e6b9 | 1529 | unexpected = true; |
41b02ec7 | 1530 | |
fdf20a31 | 1531 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
5273510e | 1532 | job_finish_and_invalidate(u->job, ns == UNIT_FAILED ? JOB_FAILED : JOB_DONE, true); |
b410e6b9 | 1533 | } |
87f0e418 | 1534 | |
b410e6b9 | 1535 | break; |
87f0e418 | 1536 | |
b410e6b9 LP |
1537 | case JOB_RELOAD: |
1538 | case JOB_RELOAD_OR_START: | |
87f0e418 | 1539 | |
ac155bb8 | 1540 | if (u->job->state == JOB_RUNNING) { |
a096ed36 | 1541 | if (ns == UNIT_ACTIVE) |
5273510e | 1542 | job_finish_and_invalidate(u->job, reload_success ? JOB_DONE : JOB_FAILED, true); |
032ff4af | 1543 | else if (ns != UNIT_ACTIVATING && ns != UNIT_RELOADING) { |
a096ed36 | 1544 | unexpected = true; |
41b02ec7 | 1545 | |
fdf20a31 | 1546 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
5273510e | 1547 | job_finish_and_invalidate(u->job, ns == UNIT_FAILED ? JOB_FAILED : JOB_DONE, true); |
a096ed36 | 1548 | } |
b410e6b9 | 1549 | } |
87f0e418 | 1550 | |
b410e6b9 | 1551 | break; |
87f0e418 | 1552 | |
b410e6b9 LP |
1553 | case JOB_STOP: |
1554 | case JOB_RESTART: | |
1555 | case JOB_TRY_RESTART: | |
87f0e418 | 1556 | |
fdf20a31 | 1557 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
5273510e | 1558 | job_finish_and_invalidate(u->job, JOB_DONE, true); |
ac155bb8 | 1559 | else if (u->job->state == JOB_RUNNING && ns != UNIT_DEACTIVATING) { |
b410e6b9 | 1560 | unexpected = true; |
5273510e | 1561 | job_finish_and_invalidate(u->job, JOB_FAILED, true); |
b410e6b9 | 1562 | } |
87f0e418 | 1563 | |
b410e6b9 | 1564 | break; |
87f0e418 | 1565 | |
b410e6b9 LP |
1566 | default: |
1567 | assert_not_reached("Job type unknown"); | |
87f0e418 | 1568 | } |
87f0e418 | 1569 | |
7e6e7b06 LP |
1570 | } else |
1571 | unexpected = true; | |
1572 | ||
546ac4f0 | 1573 | if (m->n_reloading <= 0) { |
f3bff0eb | 1574 | |
bdbf9951 LP |
1575 | /* If this state change happened without being |
1576 | * requested by a job, then let's retroactively start | |
1577 | * or stop dependencies. We skip that step when | |
1578 | * deserializing, since we don't want to create any | |
1579 | * additional jobs just because something is already | |
1580 | * activated. */ | |
1581 | ||
1582 | if (unexpected) { | |
1583 | if (UNIT_IS_INACTIVE_OR_FAILED(os) && UNIT_IS_ACTIVE_OR_ACTIVATING(ns)) | |
1584 | retroactively_start_dependencies(u); | |
1585 | else if (UNIT_IS_ACTIVE_OR_ACTIVATING(os) && UNIT_IS_INACTIVE_OR_DEACTIVATING(ns)) | |
1586 | retroactively_stop_dependencies(u); | |
1587 | } | |
5de9682c | 1588 | |
cd0504d0 MS |
1589 | /* stop unneeded units regardless if going down was expected or not */ |
1590 | if (UNIT_IS_ACTIVE_OR_ACTIVATING(os) && UNIT_IS_INACTIVE_OR_DEACTIVATING(ns)) | |
1591 | check_unneeded_dependencies(u); | |
1592 | ||
bdbf9951 | 1593 | if (ns != os && ns == UNIT_FAILED) { |
c1b6628d | 1594 | log_notice_unit(u->id, |
fcf8c440 | 1595 | "Unit %s entered failed state.", u->id); |
3ecaa09b | 1596 | unit_start_on_failure(u); |
cd6d0a45 | 1597 | } |
3b2775c5 | 1598 | } |
e537352b | 1599 | |
3b2775c5 LP |
1600 | /* Some names are special */ |
1601 | if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) { | |
1602 | ||
1603 | if (unit_has_name(u, SPECIAL_DBUS_SERVICE)) | |
1604 | /* The bus just might have become available, | |
1605 | * hence try to connect to it, if we aren't | |
1606 | * yet connected. */ | |
546ac4f0 | 1607 | bus_init(m, true); |
3b2775c5 | 1608 | |
ac155bb8 | 1609 | if (u->type == UNIT_SERVICE && |
3b2775c5 | 1610 | !UNIT_IS_ACTIVE_OR_RELOADING(os) && |
546ac4f0 | 1611 | m->n_reloading <= 0) { |
3b2775c5 | 1612 | /* Write audit record if we have just finished starting up */ |
546ac4f0 | 1613 | manager_send_unit_audit(m, u, AUDIT_SERVICE_START, true); |
ac155bb8 | 1614 | u->in_audit = true; |
3b2775c5 | 1615 | } |
e983b760 | 1616 | |
3b2775c5 | 1617 | if (!UNIT_IS_ACTIVE_OR_RELOADING(os)) |
546ac4f0 | 1618 | manager_send_unit_plymouth(m, u); |
bdbf9951 | 1619 | |
3b2775c5 | 1620 | } else { |
bdbf9951 | 1621 | |
3b2775c5 LP |
1622 | /* We don't care about D-Bus here, since we'll get an |
1623 | * asynchronous notification for it anyway. */ | |
cd6d0a45 | 1624 | |
ac155bb8 | 1625 | if (u->type == UNIT_SERVICE && |
3b2775c5 LP |
1626 | UNIT_IS_INACTIVE_OR_FAILED(ns) && |
1627 | !UNIT_IS_INACTIVE_OR_FAILED(os) && | |
546ac4f0 | 1628 | m->n_reloading <= 0) { |
4927fcae | 1629 | |
3b2775c5 LP |
1630 | /* Hmm, if there was no start record written |
1631 | * write it now, so that we always have a nice | |
1632 | * pair */ | |
ac155bb8 | 1633 | if (!u->in_audit) { |
546ac4f0 | 1634 | manager_send_unit_audit(m, u, AUDIT_SERVICE_START, ns == UNIT_INACTIVE); |
cd6d0a45 | 1635 | |
3b2775c5 | 1636 | if (ns == UNIT_INACTIVE) |
546ac4f0 | 1637 | manager_send_unit_audit(m, u, AUDIT_SERVICE_STOP, true); |
3b2775c5 LP |
1638 | } else |
1639 | /* Write audit record if we have just finished shutting down */ | |
546ac4f0 | 1640 | manager_send_unit_audit(m, u, AUDIT_SERVICE_STOP, ns == UNIT_INACTIVE); |
bdbf9951 | 1641 | |
ac155bb8 | 1642 | u->in_audit = false; |
cd6d0a45 | 1643 | } |
f278026d LP |
1644 | } |
1645 | ||
546ac4f0 | 1646 | manager_recheck_journal(m); |
3ecaa09b | 1647 | unit_trigger_notify(u); |
3b2775c5 | 1648 | |
f3bff0eb LP |
1649 | /* Maybe we finished startup and are now ready for being |
1650 | * stopped because unneeded? */ | |
bf6dcfa6 OS |
1651 | if (u->manager->n_reloading <= 0) |
1652 | unit_check_unneeded(u); | |
c1e1601e LP |
1653 | |
1654 | unit_add_to_dbus_queue(u); | |
701cc384 | 1655 | unit_add_to_gc_queue(u); |
87f0e418 LP |
1656 | } |
1657 | ||
acbb0225 | 1658 | int unit_watch_fd(Unit *u, int fd, uint32_t events, Watch *w) { |
b92bea5d ZJS |
1659 | struct epoll_event ev = { |
1660 | .data.ptr = w, | |
1661 | .events = events, | |
1662 | }; | |
87f0e418 LP |
1663 | |
1664 | assert(u); | |
1665 | assert(fd >= 0); | |
acbb0225 | 1666 | assert(w); |
ea430986 | 1667 | assert(w->type == WATCH_INVALID || (w->type == WATCH_FD && w->fd == fd && w->data.unit == u)); |
87f0e418 | 1668 | |
ac155bb8 | 1669 | if (epoll_ctl(u->manager->epoll_fd, |
acbb0225 LP |
1670 | w->type == WATCH_INVALID ? EPOLL_CTL_ADD : EPOLL_CTL_MOD, |
1671 | fd, | |
1672 | &ev) < 0) | |
1673 | return -errno; | |
87f0e418 | 1674 | |
acbb0225 LP |
1675 | w->fd = fd; |
1676 | w->type = WATCH_FD; | |
ea430986 | 1677 | w->data.unit = u; |
87f0e418 | 1678 | |
acbb0225 | 1679 | return 0; |
87f0e418 LP |
1680 | } |
1681 | ||
acbb0225 | 1682 | void unit_unwatch_fd(Unit *u, Watch *w) { |
87f0e418 | 1683 | assert(u); |
acbb0225 | 1684 | assert(w); |
87f0e418 | 1685 | |
acbb0225 LP |
1686 | if (w->type == WATCH_INVALID) |
1687 | return; | |
1688 | ||
ea430986 LP |
1689 | assert(w->type == WATCH_FD); |
1690 | assert(w->data.unit == u); | |
ac155bb8 | 1691 | assert_se(epoll_ctl(u->manager->epoll_fd, EPOLL_CTL_DEL, w->fd, NULL) >= 0); |
acbb0225 LP |
1692 | |
1693 | w->fd = -1; | |
1694 | w->type = WATCH_INVALID; | |
ea430986 | 1695 | w->data.unit = NULL; |
87f0e418 LP |
1696 | } |
1697 | ||
1698 | int unit_watch_pid(Unit *u, pid_t pid) { | |
1699 | assert(u); | |
1700 | assert(pid >= 1); | |
1701 | ||
05e343b7 LP |
1702 | /* Watch a specific PID. We only support one unit watching |
1703 | * each PID for now. */ | |
1704 | ||
ac155bb8 | 1705 | return hashmap_put(u->manager->watch_pids, LONG_TO_PTR(pid), u); |
87f0e418 LP |
1706 | } |
1707 | ||
1708 | void unit_unwatch_pid(Unit *u, pid_t pid) { | |
1709 | assert(u); | |
1710 | assert(pid >= 1); | |
1711 | ||
ac155bb8 | 1712 | hashmap_remove_value(u->manager->watch_pids, LONG_TO_PTR(pid), u); |
87f0e418 LP |
1713 | } |
1714 | ||
36697dc0 | 1715 | int unit_watch_timer(Unit *u, clockid_t clock_id, bool relative, usec_t usec, Watch *w) { |
b92bea5d | 1716 | struct itimerspec its = {}; |
acbb0225 | 1717 | int flags, fd; |
87f0e418 LP |
1718 | bool ours; |
1719 | ||
1720 | assert(u); | |
acbb0225 | 1721 | assert(w); |
faf919f1 | 1722 | assert(w->type == WATCH_INVALID || (w->type == WATCH_UNIT_TIMER && w->data.unit == u)); |
87f0e418 LP |
1723 | |
1724 | /* This will try to reuse the old timer if there is one */ | |
1725 | ||
faf919f1 LP |
1726 | if (w->type == WATCH_UNIT_TIMER) { |
1727 | assert(w->data.unit == u); | |
1728 | assert(w->fd >= 0); | |
1729 | ||
87f0e418 | 1730 | ours = false; |
acbb0225 | 1731 | fd = w->fd; |
faf919f1 LP |
1732 | } else if (w->type == WATCH_INVALID) { |
1733 | ||
87f0e418 | 1734 | ours = true; |
36697dc0 | 1735 | fd = timerfd_create(clock_id, TFD_NONBLOCK|TFD_CLOEXEC); |
68b29a9f | 1736 | if (fd < 0) |
87f0e418 | 1737 | return -errno; |
faf919f1 LP |
1738 | } else |
1739 | assert_not_reached("Invalid watch type"); | |
87f0e418 | 1740 | |
36697dc0 | 1741 | if (usec <= 0) { |
87f0e418 LP |
1742 | /* Set absolute time in the past, but not 0, since we |
1743 | * don't want to disarm the timer */ | |
1744 | its.it_value.tv_sec = 0; | |
1745 | its.it_value.tv_nsec = 1; | |
1746 | ||
1747 | flags = TFD_TIMER_ABSTIME; | |
1748 | } else { | |
36697dc0 LP |
1749 | timespec_store(&its.it_value, usec); |
1750 | flags = relative ? 0 : TFD_TIMER_ABSTIME; | |
87f0e418 LP |
1751 | } |
1752 | ||
1753 | /* This will also flush the elapse counter */ | |
1754 | if (timerfd_settime(fd, flags, &its, NULL) < 0) | |
1755 | goto fail; | |
1756 | ||
acbb0225 | 1757 | if (w->type == WATCH_INVALID) { |
b92bea5d ZJS |
1758 | struct epoll_event ev = { |
1759 | .data.ptr = w, | |
1760 | .events = EPOLLIN, | |
1761 | }; | |
acbb0225 | 1762 | |
ac155bb8 | 1763 | if (epoll_ctl(u->manager->epoll_fd, EPOLL_CTL_ADD, fd, &ev) < 0) |
acbb0225 LP |
1764 | goto fail; |
1765 | } | |
1766 | ||
faf919f1 | 1767 | w->type = WATCH_UNIT_TIMER; |
acbb0225 | 1768 | w->fd = fd; |
ea430986 | 1769 | w->data.unit = u; |
87f0e418 | 1770 | |
87f0e418 LP |
1771 | return 0; |
1772 | ||
1773 | fail: | |
1774 | if (ours) | |
ea430986 | 1775 | close_nointr_nofail(fd); |
87f0e418 LP |
1776 | |
1777 | return -errno; | |
1778 | } | |
1779 | ||
acbb0225 | 1780 | void unit_unwatch_timer(Unit *u, Watch *w) { |
87f0e418 | 1781 | assert(u); |
acbb0225 | 1782 | assert(w); |
87f0e418 | 1783 | |
acbb0225 | 1784 | if (w->type == WATCH_INVALID) |
87f0e418 LP |
1785 | return; |
1786 | ||
faf919f1 LP |
1787 | assert(w->type == WATCH_UNIT_TIMER); |
1788 | assert(w->data.unit == u); | |
1789 | assert(w->fd >= 0); | |
acbb0225 | 1790 | |
ac155bb8 | 1791 | assert_se(epoll_ctl(u->manager->epoll_fd, EPOLL_CTL_DEL, w->fd, NULL) >= 0); |
a16e1123 | 1792 | close_nointr_nofail(w->fd); |
acbb0225 LP |
1793 | |
1794 | w->fd = -1; | |
1795 | w->type = WATCH_INVALID; | |
ea430986 | 1796 | w->data.unit = NULL; |
87f0e418 LP |
1797 | } |
1798 | ||
1799 | bool unit_job_is_applicable(Unit *u, JobType j) { | |
1800 | assert(u); | |
1801 | assert(j >= 0 && j < _JOB_TYPE_MAX); | |
1802 | ||
1803 | switch (j) { | |
1804 | ||
1805 | case JOB_VERIFY_ACTIVE: | |
1806 | case JOB_START: | |
57339f47 | 1807 | case JOB_STOP: |
e0209d83 | 1808 | case JOB_NOP: |
87f0e418 LP |
1809 | return true; |
1810 | ||
87f0e418 LP |
1811 | case JOB_RESTART: |
1812 | case JOB_TRY_RESTART: | |
1813 | return unit_can_start(u); | |
1814 | ||
1815 | case JOB_RELOAD: | |
1816 | return unit_can_reload(u); | |
1817 | ||
1818 | case JOB_RELOAD_OR_START: | |
1819 | return unit_can_reload(u) && unit_can_start(u); | |
1820 | ||
1821 | default: | |
1822 | assert_not_reached("Invalid job type"); | |
1823 | } | |
1824 | } | |
1825 | ||
701cc384 | 1826 | int unit_add_dependency(Unit *u, UnitDependency d, Unit *other, bool add_reference) { |
87f0e418 LP |
1827 | |
1828 | static const UnitDependency inverse_table[_UNIT_DEPENDENCY_MAX] = { | |
1829 | [UNIT_REQUIRES] = UNIT_REQUIRED_BY, | |
9e2f7c11 | 1830 | [UNIT_REQUIRES_OVERRIDABLE] = UNIT_REQUIRED_BY_OVERRIDABLE, |
87f0e418 LP |
1831 | [UNIT_WANTS] = UNIT_WANTED_BY, |
1832 | [UNIT_REQUISITE] = UNIT_REQUIRED_BY, | |
9e2f7c11 | 1833 | [UNIT_REQUISITE_OVERRIDABLE] = UNIT_REQUIRED_BY_OVERRIDABLE, |
7f2cddae | 1834 | [UNIT_BINDS_TO] = UNIT_BOUND_BY, |
60649f17 | 1835 | [UNIT_PART_OF] = UNIT_CONSISTS_OF, |
87f0e418 | 1836 | [UNIT_REQUIRED_BY] = _UNIT_DEPENDENCY_INVALID, |
9e2f7c11 | 1837 | [UNIT_REQUIRED_BY_OVERRIDABLE] = _UNIT_DEPENDENCY_INVALID, |
87f0e418 | 1838 | [UNIT_WANTED_BY] = _UNIT_DEPENDENCY_INVALID, |
7f2cddae | 1839 | [UNIT_BOUND_BY] = UNIT_BINDS_TO, |
60649f17 | 1840 | [UNIT_CONSISTS_OF] = UNIT_PART_OF, |
69dd2852 LP |
1841 | [UNIT_CONFLICTS] = UNIT_CONFLICTED_BY, |
1842 | [UNIT_CONFLICTED_BY] = UNIT_CONFLICTS, | |
87f0e418 | 1843 | [UNIT_BEFORE] = UNIT_AFTER, |
701cc384 | 1844 | [UNIT_AFTER] = UNIT_BEFORE, |
5de9682c | 1845 | [UNIT_ON_FAILURE] = _UNIT_DEPENDENCY_INVALID, |
701cc384 | 1846 | [UNIT_REFERENCES] = UNIT_REFERENCED_BY, |
57020a3a LP |
1847 | [UNIT_REFERENCED_BY] = UNIT_REFERENCES, |
1848 | [UNIT_TRIGGERS] = UNIT_TRIGGERED_BY, | |
4dcc1cb4 | 1849 | [UNIT_TRIGGERED_BY] = UNIT_TRIGGERS, |
7f2cddae | 1850 | [UNIT_PROPAGATES_RELOAD_TO] = UNIT_RELOAD_PROPAGATED_FROM, |
85e9a101 | 1851 | [UNIT_RELOAD_PROPAGATED_FROM] = UNIT_PROPAGATES_RELOAD_TO, |
87f0e418 | 1852 | }; |
701cc384 | 1853 | int r, q = 0, v = 0, w = 0; |
87f0e418 LP |
1854 | |
1855 | assert(u); | |
1856 | assert(d >= 0 && d < _UNIT_DEPENDENCY_MAX); | |
87f0e418 LP |
1857 | assert(other); |
1858 | ||
9f151f29 LP |
1859 | u = unit_follow_merge(u); |
1860 | other = unit_follow_merge(other); | |
1861 | ||
87f0e418 LP |
1862 | /* We won't allow dependencies on ourselves. We will not |
1863 | * consider them an error however. */ | |
1864 | if (u == other) | |
1865 | return 0; | |
1866 | ||
ac155bb8 | 1867 | if ((r = set_ensure_allocated(&u->dependencies[d], trivial_hash_func, trivial_compare_func)) < 0) |
87f0e418 LP |
1868 | return r; |
1869 | ||
5de9682c | 1870 | if (inverse_table[d] != _UNIT_DEPENDENCY_INVALID) |
ac155bb8 | 1871 | if ((r = set_ensure_allocated(&other->dependencies[inverse_table[d]], trivial_hash_func, trivial_compare_func)) < 0) |
5de9682c LP |
1872 | return r; |
1873 | ||
701cc384 | 1874 | if (add_reference) |
ac155bb8 MS |
1875 | if ((r = set_ensure_allocated(&u->dependencies[UNIT_REFERENCES], trivial_hash_func, trivial_compare_func)) < 0 || |
1876 | (r = set_ensure_allocated(&other->dependencies[UNIT_REFERENCED_BY], trivial_hash_func, trivial_compare_func)) < 0) | |
701cc384 | 1877 | return r; |
87f0e418 | 1878 | |
ac155bb8 | 1879 | if ((q = set_put(u->dependencies[d], other)) < 0) |
701cc384 | 1880 | return q; |
87f0e418 | 1881 | |
5de9682c | 1882 | if (inverse_table[d] != _UNIT_DEPENDENCY_INVALID) |
ac155bb8 | 1883 | if ((v = set_put(other->dependencies[inverse_table[d]], u)) < 0) { |
5de9682c LP |
1884 | r = v; |
1885 | goto fail; | |
1886 | } | |
701cc384 LP |
1887 | |
1888 | if (add_reference) { | |
ac155bb8 | 1889 | if ((w = set_put(u->dependencies[UNIT_REFERENCES], other)) < 0) { |
701cc384 LP |
1890 | r = w; |
1891 | goto fail; | |
1892 | } | |
1893 | ||
ac155bb8 | 1894 | if ((r = set_put(other->dependencies[UNIT_REFERENCED_BY], u)) < 0) |
701cc384 | 1895 | goto fail; |
87f0e418 LP |
1896 | } |
1897 | ||
c1e1601e | 1898 | unit_add_to_dbus_queue(u); |
87f0e418 | 1899 | return 0; |
701cc384 LP |
1900 | |
1901 | fail: | |
1902 | if (q > 0) | |
ac155bb8 | 1903 | set_remove(u->dependencies[d], other); |
701cc384 LP |
1904 | |
1905 | if (v > 0) | |
ac155bb8 | 1906 | set_remove(other->dependencies[inverse_table[d]], u); |
701cc384 LP |
1907 | |
1908 | if (w > 0) | |
ac155bb8 | 1909 | set_remove(u->dependencies[UNIT_REFERENCES], other); |
701cc384 LP |
1910 | |
1911 | return r; | |
87f0e418 | 1912 | } |
0301abf4 | 1913 | |
2c966c03 LP |
1914 | int unit_add_two_dependencies(Unit *u, UnitDependency d, UnitDependency e, Unit *other, bool add_reference) { |
1915 | int r; | |
1916 | ||
1917 | assert(u); | |
1918 | ||
1919 | if ((r = unit_add_dependency(u, d, other, add_reference)) < 0) | |
1920 | return r; | |
1921 | ||
1922 | if ((r = unit_add_dependency(u, e, other, add_reference)) < 0) | |
1923 | return r; | |
1924 | ||
1925 | return 0; | |
1926 | } | |
1927 | ||
9e2f7c11 LP |
1928 | static const char *resolve_template(Unit *u, const char *name, const char*path, char **p) { |
1929 | char *s; | |
1930 | ||
1931 | assert(u); | |
1932 | assert(name || path); | |
8afbb8e1 | 1933 | assert(p); |
9e2f7c11 LP |
1934 | |
1935 | if (!name) | |
9eb977db | 1936 | name = path_get_file_name(path); |
9e2f7c11 LP |
1937 | |
1938 | if (!unit_name_is_template(name)) { | |
1939 | *p = NULL; | |
1940 | return name; | |
1941 | } | |
1942 | ||
ac155bb8 MS |
1943 | if (u->instance) |
1944 | s = unit_name_replace_instance(name, u->instance); | |
9e2f7c11 | 1945 | else { |
ae018d9b | 1946 | _cleanup_free_ char *i = NULL; |
9e2f7c11 | 1947 | |
8afbb8e1 LP |
1948 | i = unit_name_to_prefix(u->id); |
1949 | if (!i) | |
9e2f7c11 LP |
1950 | return NULL; |
1951 | ||
1952 | s = unit_name_replace_instance(name, i); | |
9e2f7c11 LP |
1953 | } |
1954 | ||
1955 | if (!s) | |
1956 | return NULL; | |
1957 | ||
1958 | *p = s; | |
1959 | return s; | |
1960 | } | |
1961 | ||
701cc384 | 1962 | int unit_add_dependency_by_name(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) { |
09b6b09f LP |
1963 | Unit *other; |
1964 | int r; | |
8afbb8e1 | 1965 | _cleanup_free_ char *s = NULL; |
09b6b09f | 1966 | |
9e2f7c11 LP |
1967 | assert(u); |
1968 | assert(name || path); | |
09b6b09f | 1969 | |
8afbb8e1 LP |
1970 | name = resolve_template(u, name, path, &s); |
1971 | if (!name) | |
9e2f7c11 | 1972 | return -ENOMEM; |
09b6b09f | 1973 | |
8afbb8e1 LP |
1974 | r = manager_load_unit(u->manager, name, path, NULL, &other); |
1975 | if (r < 0) | |
1976 | return r; | |
9e2f7c11 | 1977 | |
8afbb8e1 | 1978 | return unit_add_dependency(u, d, other, add_reference); |
09b6b09f LP |
1979 | } |
1980 | ||
2c966c03 LP |
1981 | int unit_add_two_dependencies_by_name(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference) { |
1982 | Unit *other; | |
1983 | int r; | |
68eda4bd | 1984 | _cleanup_free_ char *s = NULL; |
2c966c03 LP |
1985 | |
1986 | assert(u); | |
1987 | assert(name || path); | |
1988 | ||
1989 | if (!(name = resolve_template(u, name, path, &s))) | |
1990 | return -ENOMEM; | |
1991 | ||
ac155bb8 | 1992 | if ((r = manager_load_unit(u->manager, name, path, NULL, &other)) < 0) |
68eda4bd | 1993 | return r; |
2c966c03 LP |
1994 | |
1995 | r = unit_add_two_dependencies(u, d, e, other, add_reference); | |
1996 | ||
2c966c03 LP |
1997 | return r; |
1998 | } | |
1999 | ||
701cc384 | 2000 | int unit_add_dependency_by_name_inverse(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) { |
bd77d0fc LP |
2001 | Unit *other; |
2002 | int r; | |
68eda4bd | 2003 | _cleanup_free_ char *s = NULL; |
bd77d0fc | 2004 | |
9e2f7c11 LP |
2005 | assert(u); |
2006 | assert(name || path); | |
bd77d0fc | 2007 | |
9e2f7c11 LP |
2008 | if (!(name = resolve_template(u, name, path, &s))) |
2009 | return -ENOMEM; | |
bd77d0fc | 2010 | |
ac155bb8 | 2011 | if ((r = manager_load_unit(u->manager, name, path, NULL, &other)) < 0) |
68eda4bd | 2012 | return r; |
9e2f7c11 | 2013 | |
701cc384 | 2014 | r = unit_add_dependency(other, d, u, add_reference); |
9e2f7c11 | 2015 | |
9e2f7c11 | 2016 | return r; |
bd77d0fc LP |
2017 | } |
2018 | ||
2c966c03 LP |
2019 | int unit_add_two_dependencies_by_name_inverse(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference) { |
2020 | Unit *other; | |
2021 | int r; | |
68eda4bd | 2022 | _cleanup_free_ char *s = NULL; |
2c966c03 LP |
2023 | |
2024 | assert(u); | |
2025 | assert(name || path); | |
2026 | ||
2027 | if (!(name = resolve_template(u, name, path, &s))) | |
2028 | return -ENOMEM; | |
2029 | ||
ac155bb8 | 2030 | if ((r = manager_load_unit(u->manager, name, path, NULL, &other)) < 0) |
68eda4bd | 2031 | return r; |
2c966c03 LP |
2032 | |
2033 | if ((r = unit_add_two_dependencies(other, d, e, u, add_reference)) < 0) | |
68eda4bd | 2034 | return r; |
2c966c03 | 2035 | |
2c966c03 LP |
2036 | return r; |
2037 | } | |
2038 | ||
0301abf4 | 2039 | int set_unit_path(const char *p) { |
26d04f86 | 2040 | _cleanup_free_ char *c = NULL; |
0301abf4 LP |
2041 | |
2042 | /* This is mostly for debug purposes */ | |
26d04f86 LP |
2043 | c = path_make_absolute_cwd(p); |
2044 | if (setenv("SYSTEMD_UNIT_PATH", c, 0) < 0) | |
2045 | return -errno; | |
0301abf4 LP |
2046 | |
2047 | return 0; | |
2048 | } | |
88066b3a | 2049 | |
ea430986 | 2050 | char *unit_dbus_path(Unit *u) { |
ea430986 LP |
2051 | assert(u); |
2052 | ||
ac155bb8 | 2053 | if (!u->id) |
04ade7d2 LP |
2054 | return NULL; |
2055 | ||
48899192 | 2056 | return unit_dbus_path_from_name(u->id); |
ea430986 LP |
2057 | } |
2058 | ||
41f9172f | 2059 | char *unit_default_cgroup_path(Unit *u) { |
d7bd3de0 | 2060 | _cleanup_free_ char *escaped = NULL, *slice = NULL; |
a016b922 | 2061 | int r; |
5954c074 | 2062 | |
013b87c0 LP |
2063 | assert(u); |
2064 | ||
4ad49000 LP |
2065 | if (unit_has_name(u, SPECIAL_ROOT_SLICE)) |
2066 | return strdup(u->manager->cgroup_root); | |
2067 | ||
2068 | if (UNIT_ISSET(u->slice) && !unit_has_name(UNIT_DEREF(u->slice), SPECIAL_ROOT_SLICE)) { | |
a016b922 LP |
2069 | r = cg_slice_to_path(UNIT_DEREF(u->slice)->id, &slice); |
2070 | if (r < 0) | |
2071 | return NULL; | |
2072 | } | |
2073 | ||
d7bd3de0 LP |
2074 | escaped = cg_escape(u->id); |
2075 | if (!escaped) | |
5954c074 LP |
2076 | return NULL; |
2077 | ||
d7bd3de0 LP |
2078 | if (slice) |
2079 | return strjoin(u->manager->cgroup_root, "/", slice, "/", escaped, NULL); | |
2080 | else | |
2081 | return strjoin(u->manager->cgroup_root, "/", escaped, NULL); | |
013b87c0 LP |
2082 | } |
2083 | ||
a016b922 | 2084 | int unit_add_default_slice(Unit *u) { |
a8833944 LP |
2085 | _cleanup_free_ char *b = NULL; |
2086 | const char *slice_name; | |
a016b922 LP |
2087 | Unit *slice; |
2088 | int r; | |
2089 | ||
2090 | assert(u); | |
2091 | ||
9444b1f2 | 2092 | if (UNIT_ISSET(u->slice)) |
a016b922 LP |
2093 | return 0; |
2094 | ||
4ad49000 | 2095 | if (!unit_get_cgroup_context(u)) |
a016b922 LP |
2096 | return 0; |
2097 | ||
a8833944 LP |
2098 | if (u->instance) { |
2099 | _cleanup_free_ char *prefix = NULL, *escaped = NULL; | |
68eda4bd | 2100 | |
a8833944 LP |
2101 | /* Implicitly place all instantiated units in their |
2102 | * own per-template slice */ | |
2103 | ||
2104 | prefix = unit_name_to_prefix(u->id); | |
2105 | if (!prefix) | |
2106 | return -ENOMEM; | |
2107 | ||
2108 | /* The prefix is already escaped, but it might include | |
2109 | * "-" which has a special meaning for slice units, | |
2110 | * hence escape it here extra. */ | |
2111 | escaped = strreplace(prefix, "-", "\\x2d"); | |
2112 | if (!escaped) | |
2113 | return -ENOMEM; | |
2114 | ||
2115 | if (u->manager->running_as == SYSTEMD_SYSTEM) | |
2116 | b = strjoin("system-", escaped, ".slice", NULL); | |
2117 | else | |
2118 | b = strappend(escaped, ".slice"); | |
2119 | if (!b) | |
2120 | return -ENOMEM; | |
2121 | ||
2122 | slice_name = b; | |
2123 | } else | |
2124 | slice_name = | |
2125 | u->manager->running_as == SYSTEMD_SYSTEM | |
2126 | ? SPECIAL_SYSTEM_SLICE | |
2127 | : SPECIAL_ROOT_SLICE; | |
2128 | ||
2129 | r = manager_load_unit(u->manager, slice_name, NULL, NULL, &slice); | |
a016b922 LP |
2130 | if (r < 0) |
2131 | return r; | |
2132 | ||
2133 | unit_ref_set(&u->slice, slice); | |
2134 | return 0; | |
2135 | } | |
2136 | ||
9444b1f2 LP |
2137 | const char *unit_slice_name(Unit *u) { |
2138 | assert(u); | |
2139 | ||
2140 | if (!UNIT_ISSET(u->slice)) | |
2141 | return NULL; | |
2142 | ||
2143 | return UNIT_DEREF(u->slice)->id; | |
2144 | } | |
2145 | ||
f6ff8c29 | 2146 | int unit_load_related_unit(Unit *u, const char *type, Unit **_found) { |
78edb35a | 2147 | _cleanup_free_ char *t = NULL; |
f6ff8c29 LP |
2148 | int r; |
2149 | ||
2150 | assert(u); | |
2151 | assert(type); | |
2152 | assert(_found); | |
2153 | ||
78edb35a LP |
2154 | t = unit_name_change_suffix(u->id, type); |
2155 | if (!t) | |
f6ff8c29 LP |
2156 | return -ENOMEM; |
2157 | ||
2158 | assert(!unit_has_name(u, t)); | |
2159 | ||
ac155bb8 | 2160 | r = manager_load_unit(u->manager, t, NULL, NULL, _found); |
9e2f7c11 | 2161 | assert(r < 0 || *_found != u); |
f6ff8c29 LP |
2162 | return r; |
2163 | } | |
2164 | ||
05e343b7 LP |
2165 | int unit_watch_bus_name(Unit *u, const char *name) { |
2166 | assert(u); | |
2167 | assert(name); | |
2168 | ||
2169 | /* Watch a specific name on the bus. We only support one unit | |
2170 | * watching each name for now. */ | |
2171 | ||
ac155bb8 | 2172 | return hashmap_put(u->manager->watch_bus, name, u); |
05e343b7 LP |
2173 | } |
2174 | ||
2175 | void unit_unwatch_bus_name(Unit *u, const char *name) { | |
2176 | assert(u); | |
2177 | assert(name); | |
2178 | ||
ac155bb8 | 2179 | hashmap_remove_value(u->manager->watch_bus, name, u); |
05e343b7 LP |
2180 | } |
2181 | ||
a16e1123 LP |
2182 | bool unit_can_serialize(Unit *u) { |
2183 | assert(u); | |
2184 | ||
2185 | return UNIT_VTABLE(u)->serialize && UNIT_VTABLE(u)->deserialize_item; | |
2186 | } | |
2187 | ||
6b78f9b4 | 2188 | int unit_serialize(Unit *u, FILE *f, FDSet *fds, bool serialize_jobs) { |
a16e1123 LP |
2189 | int r; |
2190 | ||
2191 | assert(u); | |
2192 | assert(f); | |
2193 | assert(fds); | |
2194 | ||
2195 | if (!unit_can_serialize(u)) | |
2196 | return 0; | |
2197 | ||
6fa48533 LP |
2198 | r = UNIT_VTABLE(u)->serialize(u, f, fds); |
2199 | if (r < 0) | |
a16e1123 LP |
2200 | return r; |
2201 | ||
cca098b0 | 2202 | |
6b78f9b4 LP |
2203 | if (serialize_jobs) { |
2204 | if (u->job) { | |
2205 | fprintf(f, "job\n"); | |
2206 | job_serialize(u->job, f, fds); | |
2207 | } | |
2208 | ||
2209 | if (u->nop_job) { | |
2210 | fprintf(f, "job\n"); | |
2211 | job_serialize(u->nop_job, f, fds); | |
2212 | } | |
e0209d83 MS |
2213 | } |
2214 | ||
ac155bb8 MS |
2215 | dual_timestamp_serialize(f, "inactive-exit-timestamp", &u->inactive_exit_timestamp); |
2216 | dual_timestamp_serialize(f, "active-enter-timestamp", &u->active_enter_timestamp); | |
2217 | dual_timestamp_serialize(f, "active-exit-timestamp", &u->active_exit_timestamp); | |
2218 | dual_timestamp_serialize(f, "inactive-enter-timestamp", &u->inactive_enter_timestamp); | |
2219 | dual_timestamp_serialize(f, "condition-timestamp", &u->condition_timestamp); | |
2791a8f8 | 2220 | |
ac155bb8 MS |
2221 | if (dual_timestamp_is_set(&u->condition_timestamp)) |
2222 | unit_serialize_item(u, f, "condition-result", yes_no(u->condition_result)); | |
10717a1a | 2223 | |
c2756a68 LP |
2224 | unit_serialize_item(u, f, "transient", yes_no(u->transient)); |
2225 | ||
2226 | if (u->cgroup_path) | |
2227 | unit_serialize_item(u, f, "cgroup", u->cgroup_path); | |
2228 | ||
a16e1123 LP |
2229 | /* End marker */ |
2230 | fputc('\n', f); | |
2231 | return 0; | |
2232 | } | |
2233 | ||
2234 | void unit_serialize_item_format(Unit *u, FILE *f, const char *key, const char *format, ...) { | |
2235 | va_list ap; | |
2236 | ||
2237 | assert(u); | |
2238 | assert(f); | |
2239 | assert(key); | |
2240 | assert(format); | |
2241 | ||
2242 | fputs(key, f); | |
2243 | fputc('=', f); | |
2244 | ||
2245 | va_start(ap, format); | |
2246 | vfprintf(f, format, ap); | |
2247 | va_end(ap); | |
2248 | ||
2249 | fputc('\n', f); | |
2250 | } | |
2251 | ||
2252 | void unit_serialize_item(Unit *u, FILE *f, const char *key, const char *value) { | |
2253 | assert(u); | |
2254 | assert(f); | |
2255 | assert(key); | |
2256 | assert(value); | |
2257 | ||
2258 | fprintf(f, "%s=%s\n", key, value); | |
2259 | } | |
2260 | ||
2261 | int unit_deserialize(Unit *u, FILE *f, FDSet *fds) { | |
2262 | int r; | |
2263 | ||
2264 | assert(u); | |
2265 | assert(f); | |
2266 | assert(fds); | |
2267 | ||
2268 | if (!unit_can_serialize(u)) | |
2269 | return 0; | |
2270 | ||
2271 | for (;;) { | |
20c03b7b | 2272 | char line[LINE_MAX], *l, *v; |
a16e1123 LP |
2273 | size_t k; |
2274 | ||
2275 | if (!fgets(line, sizeof(line), f)) { | |
2276 | if (feof(f)) | |
2277 | return 0; | |
2278 | return -errno; | |
2279 | } | |
2280 | ||
10f8e83c | 2281 | char_array_0(line); |
a16e1123 LP |
2282 | l = strstrip(line); |
2283 | ||
2284 | /* End marker */ | |
2285 | if (l[0] == 0) | |
2286 | return 0; | |
2287 | ||
2288 | k = strcspn(l, "="); | |
2289 | ||
2290 | if (l[k] == '=') { | |
2291 | l[k] = 0; | |
2292 | v = l+k+1; | |
2293 | } else | |
2294 | v = l+k; | |
2295 | ||
cca098b0 | 2296 | if (streq(l, "job")) { |
39a18c60 MS |
2297 | if (v[0] == '\0') { |
2298 | /* new-style serialized job */ | |
2299 | Job *j = job_new_raw(u); | |
2300 | if (!j) | |
2301 | return -ENOMEM; | |
2302 | ||
2303 | r = job_deserialize(j, f, fds); | |
2304 | if (r < 0) { | |
2305 | job_free(j); | |
2306 | return r; | |
2307 | } | |
cca098b0 | 2308 | |
39a18c60 MS |
2309 | r = hashmap_put(u->manager->jobs, UINT32_TO_PTR(j->id), j); |
2310 | if (r < 0) { | |
2311 | job_free(j); | |
2312 | return r; | |
2313 | } | |
e0209d83 MS |
2314 | |
2315 | r = job_install_deserialized(j); | |
2316 | if (r < 0) { | |
2317 | hashmap_remove(u->manager->jobs, UINT32_TO_PTR(j->id)); | |
2318 | job_free(j); | |
2319 | return r; | |
2320 | } | |
6b19ad24 MS |
2321 | |
2322 | if (j->state == JOB_RUNNING) | |
2323 | u->manager->n_running_jobs++; | |
39a18c60 MS |
2324 | } else { |
2325 | /* legacy */ | |
2326 | JobType type = job_type_from_string(v); | |
2327 | if (type < 0) | |
2328 | log_debug("Failed to parse job type value %s", v); | |
2329 | else | |
2330 | u->deserialized_job = type; | |
2331 | } | |
cca098b0 | 2332 | continue; |
8aaf019b | 2333 | } else if (streq(l, "inactive-exit-timestamp")) { |
ac155bb8 | 2334 | dual_timestamp_deserialize(v, &u->inactive_exit_timestamp); |
8aaf019b LP |
2335 | continue; |
2336 | } else if (streq(l, "active-enter-timestamp")) { | |
ac155bb8 | 2337 | dual_timestamp_deserialize(v, &u->active_enter_timestamp); |
8aaf019b LP |
2338 | continue; |
2339 | } else if (streq(l, "active-exit-timestamp")) { | |
ac155bb8 | 2340 | dual_timestamp_deserialize(v, &u->active_exit_timestamp); |
8aaf019b LP |
2341 | continue; |
2342 | } else if (streq(l, "inactive-enter-timestamp")) { | |
ac155bb8 | 2343 | dual_timestamp_deserialize(v, &u->inactive_enter_timestamp); |
8aaf019b | 2344 | continue; |
2791a8f8 | 2345 | } else if (streq(l, "condition-timestamp")) { |
ac155bb8 | 2346 | dual_timestamp_deserialize(v, &u->condition_timestamp); |
2791a8f8 LP |
2347 | continue; |
2348 | } else if (streq(l, "condition-result")) { | |
2349 | int b; | |
2350 | ||
c2756a68 LP |
2351 | b = parse_boolean(v); |
2352 | if (b < 0) | |
2791a8f8 LP |
2353 | log_debug("Failed to parse condition result value %s", v); |
2354 | else | |
ac155bb8 | 2355 | u->condition_result = b; |
efbac6d2 LP |
2356 | |
2357 | continue; | |
c2756a68 LP |
2358 | |
2359 | } else if (streq(l, "transient")) { | |
2360 | int b; | |
2361 | ||
2362 | b = parse_boolean(v); | |
2363 | if (b < 0) | |
2364 | log_debug("Failed to parse transient bool %s", v); | |
2365 | else | |
2366 | u->transient = b; | |
2367 | ||
2368 | continue; | |
2369 | } else if (streq(l, "cgroup")) { | |
2370 | char *s; | |
2371 | ||
2372 | s = strdup(v); | |
f440e1bb | 2373 | if (!s) |
c2756a68 LP |
2374 | return -ENOMEM; |
2375 | ||
2376 | free(u->cgroup_path); | |
2377 | u->cgroup_path = s; | |
72673e86 | 2378 | |
b58b8e11 | 2379 | assert(hashmap_put(u->manager->cgroup_unit, s, u) == 1); |
c2756a68 | 2380 | continue; |
8aaf019b | 2381 | } |
cca098b0 | 2382 | |
c2756a68 LP |
2383 | r = UNIT_VTABLE(u)->deserialize_item(u, l, v, fds); |
2384 | if (r < 0) | |
a16e1123 LP |
2385 | return r; |
2386 | } | |
2387 | } | |
2388 | ||
6e2ef85b LP |
2389 | int unit_add_node_link(Unit *u, const char *what, bool wants) { |
2390 | Unit *device; | |
68eda4bd | 2391 | _cleanup_free_ char *e = NULL; |
6e2ef85b LP |
2392 | int r; |
2393 | ||
2394 | assert(u); | |
2395 | ||
2396 | if (!what) | |
2397 | return 0; | |
2398 | ||
2399 | /* Adds in links to the device node that this unit is based on */ | |
2400 | ||
8407a5d0 | 2401 | if (!is_device_path(what)) |
6e2ef85b LP |
2402 | return 0; |
2403 | ||
35eb6b12 LP |
2404 | e = unit_name_from_path(what, ".device"); |
2405 | if (!e) | |
6e2ef85b LP |
2406 | return -ENOMEM; |
2407 | ||
ac155bb8 | 2408 | r = manager_load_unit(u->manager, e, NULL, NULL, &device); |
68eda4bd | 2409 | |
6e2ef85b LP |
2410 | if (r < 0) |
2411 | return r; | |
2412 | ||
faa368e3 LP |
2413 | r = unit_add_two_dependencies(u, UNIT_AFTER, UNIT_BINDS_TO, device, true); |
2414 | if (r < 0) | |
6e2ef85b LP |
2415 | return r; |
2416 | ||
faa368e3 LP |
2417 | if (wants) { |
2418 | r = unit_add_dependency(device, UNIT_WANTS, u, false); | |
2419 | if (r < 0) | |
6e2ef85b | 2420 | return r; |
faa368e3 | 2421 | } |
6e2ef85b LP |
2422 | |
2423 | return 0; | |
2424 | } | |
a16e1123 | 2425 | |
cca098b0 LP |
2426 | int unit_coldplug(Unit *u) { |
2427 | int r; | |
2428 | ||
2429 | assert(u); | |
2430 | ||
2431 | if (UNIT_VTABLE(u)->coldplug) | |
2432 | if ((r = UNIT_VTABLE(u)->coldplug(u)) < 0) | |
2433 | return r; | |
2434 | ||
39a18c60 MS |
2435 | if (u->job) { |
2436 | r = job_coldplug(u->job); | |
2437 | if (r < 0) | |
2438 | return r; | |
2439 | } else if (u->deserialized_job >= 0) { | |
2440 | /* legacy */ | |
2441 | r = manager_add_job(u->manager, u->deserialized_job, u, JOB_IGNORE_REQUIREMENTS, false, NULL, NULL); | |
2442 | if (r < 0) | |
cca098b0 LP |
2443 | return r; |
2444 | ||
ac155bb8 | 2445 | u->deserialized_job = _JOB_TYPE_INVALID; |
cca098b0 LP |
2446 | } |
2447 | ||
2448 | return 0; | |
2449 | } | |
2450 | ||
b1e2b33c CR |
2451 | #pragma GCC diagnostic push |
2452 | #pragma GCC diagnostic ignored "-Wformat-nonliteral" | |
49b1d377 MS |
2453 | void unit_status_printf(Unit *u, const char *status, const char *unit_status_msg_format) { |
2454 | manager_status_printf(u->manager, false, status, unit_status_msg_format, unit_description(u)); | |
2455 | } | |
b1e2b33c | 2456 | #pragma GCC diagnostic pop |
49b1d377 | 2457 | |
45fb0699 | 2458 | bool unit_need_daemon_reload(Unit *u) { |
ae7a7182 OS |
2459 | _cleanup_strv_free_ char **t = NULL; |
2460 | char **path; | |
1b64d026 | 2461 | struct stat st; |
ae7a7182 | 2462 | unsigned loaded_cnt, current_cnt; |
1b64d026 | 2463 | |
45fb0699 LP |
2464 | assert(u); |
2465 | ||
ac155bb8 | 2466 | if (u->fragment_path) { |
5f4b19f4 | 2467 | zero(st); |
ac155bb8 | 2468 | if (stat(u->fragment_path, &st) < 0) |
5f4b19f4 LP |
2469 | /* What, cannot access this anymore? */ |
2470 | return true; | |
45fb0699 | 2471 | |
ac155bb8 MS |
2472 | if (u->fragment_mtime > 0 && |
2473 | timespec_load(&st.st_mtim) != u->fragment_mtime) | |
5f4b19f4 LP |
2474 | return true; |
2475 | } | |
2476 | ||
1b64d026 LP |
2477 | if (u->source_path) { |
2478 | zero(st); | |
2479 | if (stat(u->source_path, &st) < 0) | |
2480 | return true; | |
2481 | ||
2482 | if (u->source_mtime > 0 && | |
2483 | timespec_load(&st.st_mtim) != u->source_mtime) | |
2484 | return true; | |
2485 | } | |
5f4b19f4 | 2486 | |
ae7a7182 OS |
2487 | t = unit_find_dropin_paths(u); |
2488 | loaded_cnt = strv_length(t); | |
2489 | current_cnt = strv_length(u->dropin_paths); | |
2490 | ||
2491 | if (loaded_cnt == current_cnt) { | |
2492 | if (loaded_cnt == 0) | |
2493 | return false; | |
2494 | ||
2495 | if (strv_overlap(u->dropin_paths, t)) { | |
2496 | STRV_FOREACH(path, u->dropin_paths) { | |
2497 | zero(st); | |
2498 | if (stat(*path, &st) < 0) | |
2499 | return true; | |
2500 | ||
2501 | if (u->dropin_mtime > 0 && | |
2502 | timespec_load(&st.st_mtim) > u->dropin_mtime) | |
2503 | return true; | |
2504 | } | |
2505 | ||
2506 | return false; | |
2507 | } else | |
2508 | return true; | |
2509 | } else | |
2510 | return true; | |
45fb0699 LP |
2511 | } |
2512 | ||
fdf20a31 | 2513 | void unit_reset_failed(Unit *u) { |
5632e374 LP |
2514 | assert(u); |
2515 | ||
fdf20a31 MM |
2516 | if (UNIT_VTABLE(u)->reset_failed) |
2517 | UNIT_VTABLE(u)->reset_failed(u); | |
5632e374 LP |
2518 | } |
2519 | ||
a7f241db LP |
2520 | Unit *unit_following(Unit *u) { |
2521 | assert(u); | |
2522 | ||
2523 | if (UNIT_VTABLE(u)->following) | |
2524 | return UNIT_VTABLE(u)->following(u); | |
2525 | ||
2526 | return NULL; | |
2527 | } | |
2528 | ||
31afa0a4 | 2529 | bool unit_stop_pending(Unit *u) { |
18ffdfda LP |
2530 | assert(u); |
2531 | ||
31afa0a4 LP |
2532 | /* This call does check the current state of the unit. It's |
2533 | * hence useful to be called from state change calls of the | |
2534 | * unit itself, where the state isn't updated yet. This is | |
2535 | * different from unit_inactive_or_pending() which checks both | |
2536 | * the current state and for a queued job. */ | |
18ffdfda | 2537 | |
31afa0a4 LP |
2538 | return u->job && u->job->type == JOB_STOP; |
2539 | } | |
2540 | ||
2541 | bool unit_inactive_or_pending(Unit *u) { | |
2542 | assert(u); | |
2543 | ||
2544 | /* Returns true if the unit is inactive or going down */ | |
18ffdfda | 2545 | |
d956ac29 LP |
2546 | if (UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))) |
2547 | return true; | |
2548 | ||
31afa0a4 | 2549 | if (unit_stop_pending(u)) |
18ffdfda LP |
2550 | return true; |
2551 | ||
2552 | return false; | |
2553 | } | |
2554 | ||
31afa0a4 | 2555 | bool unit_active_or_pending(Unit *u) { |
f976f3f6 LP |
2556 | assert(u); |
2557 | ||
f60c2665 | 2558 | /* Returns true if the unit is active or going up */ |
f976f3f6 LP |
2559 | |
2560 | if (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) | |
2561 | return true; | |
2562 | ||
ac155bb8 MS |
2563 | if (u->job && |
2564 | (u->job->type == JOB_START || | |
2565 | u->job->type == JOB_RELOAD_OR_START || | |
2566 | u->job->type == JOB_RESTART)) | |
f976f3f6 LP |
2567 | return true; |
2568 | ||
2569 | return false; | |
2570 | } | |
2571 | ||
c74f17d9 | 2572 | int unit_kill(Unit *u, KillWho w, int signo, DBusError *error) { |
8a0867d6 LP |
2573 | assert(u); |
2574 | assert(w >= 0 && w < _KILL_WHO_MAX); | |
8a0867d6 LP |
2575 | assert(signo > 0); |
2576 | assert(signo < _NSIG); | |
2577 | ||
8a0867d6 LP |
2578 | if (!UNIT_VTABLE(u)->kill) |
2579 | return -ENOTSUP; | |
2580 | ||
c74f17d9 | 2581 | return UNIT_VTABLE(u)->kill(u, w, signo, error); |
8a0867d6 LP |
2582 | } |
2583 | ||
82659fd7 LP |
2584 | static Set *unit_pid_set(pid_t main_pid, pid_t control_pid) { |
2585 | Set *pid_set; | |
2586 | int r; | |
2587 | ||
2588 | pid_set = set_new(trivial_hash_func, trivial_compare_func); | |
2589 | if (!pid_set) | |
2590 | return NULL; | |
2591 | ||
2592 | /* Exclude the main/control pids from being killed via the cgroup */ | |
2593 | if (main_pid > 0) { | |
2594 | r = set_put(pid_set, LONG_TO_PTR(main_pid)); | |
2595 | if (r < 0) | |
2596 | goto fail; | |
2597 | } | |
2598 | ||
2599 | if (control_pid > 0) { | |
2600 | r = set_put(pid_set, LONG_TO_PTR(control_pid)); | |
2601 | if (r < 0) | |
2602 | goto fail; | |
2603 | } | |
2604 | ||
2605 | return pid_set; | |
2606 | ||
2607 | fail: | |
2608 | set_free(pid_set); | |
2609 | return NULL; | |
2610 | } | |
2611 | ||
d91c34f2 LP |
2612 | int unit_kill_common( |
2613 | Unit *u, | |
2614 | KillWho who, | |
2615 | int signo, | |
2616 | pid_t main_pid, | |
2617 | pid_t control_pid, | |
2618 | DBusError *error) { | |
2619 | ||
814cc562 MS |
2620 | int r = 0; |
2621 | ||
2622 | if (who == KILL_MAIN && main_pid <= 0) { | |
2623 | if (main_pid < 0) | |
2624 | dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "%s units have no main processes", unit_type_to_string(u->type)); | |
2625 | else | |
2626 | dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No main process to kill"); | |
2627 | return -ESRCH; | |
2628 | } | |
2629 | ||
2630 | if (who == KILL_CONTROL && control_pid <= 0) { | |
2631 | if (control_pid < 0) | |
2632 | dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "%s units have no control processes", unit_type_to_string(u->type)); | |
2633 | else | |
2634 | dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill"); | |
2635 | return -ESRCH; | |
2636 | } | |
2637 | ||
2638 | if (who == KILL_CONTROL || who == KILL_ALL) | |
2639 | if (control_pid > 0) | |
2640 | if (kill(control_pid, signo) < 0) | |
2641 | r = -errno; | |
2642 | ||
2643 | if (who == KILL_MAIN || who == KILL_ALL) | |
2644 | if (main_pid > 0) | |
2645 | if (kill(main_pid, signo) < 0) | |
2646 | r = -errno; | |
2647 | ||
4ad49000 | 2648 | if (who == KILL_ALL && u->cgroup_path) { |
814cc562 MS |
2649 | _cleanup_set_free_ Set *pid_set = NULL; |
2650 | int q; | |
2651 | ||
82659fd7 LP |
2652 | /* Exclude the main/control pids from being killed via the cgroup */ |
2653 | pid_set = unit_pid_set(main_pid, control_pid); | |
814cc562 MS |
2654 | if (!pid_set) |
2655 | return -ENOMEM; | |
2656 | ||
4ad49000 | 2657 | q = cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, signo, false, true, false, pid_set); |
814cc562 MS |
2658 | if (q < 0 && q != -EAGAIN && q != -ESRCH && q != -ENOENT) |
2659 | r = q; | |
2660 | } | |
2661 | ||
2662 | return r; | |
2663 | } | |
2664 | ||
6210e7fc LP |
2665 | int unit_following_set(Unit *u, Set **s) { |
2666 | assert(u); | |
2667 | assert(s); | |
2668 | ||
2669 | if (UNIT_VTABLE(u)->following_set) | |
2670 | return UNIT_VTABLE(u)->following_set(u, s); | |
2671 | ||
2672 | *s = NULL; | |
2673 | return 0; | |
2674 | } | |
2675 | ||
a4375746 LP |
2676 | UnitFileState unit_get_unit_file_state(Unit *u) { |
2677 | assert(u); | |
2678 | ||
ac155bb8 MS |
2679 | if (u->unit_file_state < 0 && u->fragment_path) |
2680 | u->unit_file_state = unit_file_get_state( | |
67445f4e | 2681 | u->manager->running_as == SYSTEMD_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER, |
9eb977db | 2682 | NULL, path_get_file_name(u->fragment_path)); |
a4375746 | 2683 | |
ac155bb8 | 2684 | return u->unit_file_state; |
a4375746 LP |
2685 | } |
2686 | ||
57020a3a LP |
2687 | Unit* unit_ref_set(UnitRef *ref, Unit *u) { |
2688 | assert(ref); | |
2689 | assert(u); | |
2690 | ||
2691 | if (ref->unit) | |
2692 | unit_ref_unset(ref); | |
2693 | ||
2694 | ref->unit = u; | |
71fda00f | 2695 | LIST_PREPEND(refs, u->refs, ref); |
57020a3a LP |
2696 | return u; |
2697 | } | |
2698 | ||
2699 | void unit_ref_unset(UnitRef *ref) { | |
2700 | assert(ref); | |
2701 | ||
2702 | if (!ref->unit) | |
2703 | return; | |
2704 | ||
71fda00f | 2705 | LIST_REMOVE(refs, ref->unit->refs, ref); |
57020a3a LP |
2706 | ref->unit = NULL; |
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); | |
6891529f ZJS |
2895 | if (r < 0) |
2896 | return r; | |
2897 | ||
71645aca | 2898 | if (unlink(q) < 0) |
241da328 | 2899 | r = errno == ENOENT ? 0 : -errno; |
26d04f86 | 2900 | else |
241da328 | 2901 | r = 1; |
71645aca LP |
2902 | |
2903 | rmdir(p); | |
26d04f86 | 2904 | return r; |
71645aca LP |
2905 | } |
2906 | ||
c2756a68 LP |
2907 | int unit_make_transient(Unit *u) { |
2908 | int r; | |
2909 | ||
2910 | assert(u); | |
2911 | ||
2912 | u->load_state = UNIT_STUB; | |
2913 | u->load_error = 0; | |
2914 | u->transient = true; | |
2915 | ||
2916 | free(u->fragment_path); | |
2917 | u->fragment_path = NULL; | |
2918 | ||
2919 | if (u->manager->running_as == SYSTEMD_USER) { | |
2920 | _cleanup_free_ char *c = NULL; | |
2921 | ||
2922 | r = user_config_home(&c); | |
2923 | if (r < 0) | |
2924 | return r; | |
2925 | if (r == 0) | |
2926 | return -ENOENT; | |
2927 | ||
2928 | u->fragment_path = strjoin(c, "/", u->id, NULL); | |
2929 | if (!u->fragment_path) | |
2930 | return -ENOMEM; | |
2931 | ||
2932 | mkdir_p(c, 0755); | |
2933 | } else { | |
2934 | u->fragment_path = strappend("/run/systemd/system/", u->id); | |
2935 | if (!u->fragment_path) | |
2936 | return -ENOMEM; | |
2937 | ||
2938 | mkdir_p("/run/systemd/system", 0755); | |
2939 | } | |
2940 | ||
2941 | return write_string_file_atomic_label(u->fragment_path, "# Transient stub"); | |
2942 | } | |
2943 | ||
cd2086fe LP |
2944 | int unit_kill_context( |
2945 | Unit *u, | |
2946 | KillContext *c, | |
2947 | bool sigkill, | |
2948 | pid_t main_pid, | |
2949 | pid_t control_pid, | |
2950 | bool main_pid_alien) { | |
2951 | ||
2952 | int sig, wait_for_exit = 0, r; | |
2953 | ||
2954 | assert(u); | |
2955 | assert(c); | |
2956 | ||
2957 | if (c->kill_mode == KILL_NONE) | |
2958 | return 0; | |
2959 | ||
2960 | sig = sigkill ? SIGKILL : c->kill_signal; | |
2961 | ||
2962 | if (main_pid > 0) { | |
2963 | r = kill_and_sigcont(main_pid, sig); | |
2964 | ||
2965 | if (r < 0 && r != -ESRCH) { | |
2966 | _cleanup_free_ char *comm = NULL; | |
2967 | get_process_comm(main_pid, &comm); | |
2968 | ||
2969 | log_warning_unit(u->id, "Failed to kill main process %li (%s): %s", | |
2970 | (long) main_pid, strna(comm), strerror(-r)); | |
82659fd7 | 2971 | } else { |
cd2086fe | 2972 | wait_for_exit = !main_pid_alien; |
82659fd7 LP |
2973 | |
2974 | if (c->send_sighup) | |
2975 | kill(main_pid, SIGHUP); | |
2976 | } | |
cd2086fe LP |
2977 | } |
2978 | ||
2979 | if (control_pid > 0) { | |
2980 | r = kill_and_sigcont(control_pid, sig); | |
2981 | ||
2982 | if (r < 0 && r != -ESRCH) { | |
2983 | _cleanup_free_ char *comm = NULL; | |
2984 | get_process_comm(control_pid, &comm); | |
2985 | ||
2986 | log_warning_unit(u->id, | |
2987 | "Failed to kill control process %li (%s): %s", | |
2988 | (long) control_pid, strna(comm), strerror(-r)); | |
82659fd7 | 2989 | } else { |
cd2086fe | 2990 | wait_for_exit = true; |
82659fd7 LP |
2991 | |
2992 | if (c->send_sighup) | |
2993 | kill(control_pid, SIGHUP); | |
2994 | } | |
cd2086fe LP |
2995 | } |
2996 | ||
4ad49000 | 2997 | if (c->kill_mode == KILL_CONTROL_GROUP && u->cgroup_path) { |
cd2086fe LP |
2998 | _cleanup_set_free_ Set *pid_set = NULL; |
2999 | ||
82659fd7 LP |
3000 | /* Exclude the main/control pids from being killed via the cgroup */ |
3001 | pid_set = unit_pid_set(main_pid, control_pid); | |
cd2086fe LP |
3002 | if (!pid_set) |
3003 | return -ENOMEM; | |
3004 | ||
4ad49000 | 3005 | r = cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, sig, true, true, false, pid_set); |
cd2086fe LP |
3006 | if (r < 0) { |
3007 | if (r != -EAGAIN && r != -ESRCH && r != -ENOENT) | |
3008 | log_warning_unit(u->id, "Failed to kill control group: %s", strerror(-r)); | |
82659fd7 | 3009 | } else if (r > 0) { |
cd2086fe | 3010 | wait_for_exit = true; |
82659fd7 LP |
3011 | if (c->send_sighup) { |
3012 | set_free(pid_set); | |
3013 | ||
3014 | pid_set = unit_pid_set(main_pid, control_pid); | |
3015 | if (!pid_set) | |
3016 | return -ENOMEM; | |
3017 | ||
3018 | cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, SIGHUP, true, true, false, pid_set); | |
3019 | } | |
3020 | } | |
cd2086fe LP |
3021 | } |
3022 | ||
3023 | return wait_for_exit; | |
3024 | } | |
3025 | ||
a57f7e2c LP |
3026 | int unit_require_mounts_for(Unit *u, const char *path) { |
3027 | char prefix[strlen(path) + 1], *p; | |
3028 | int r; | |
3029 | ||
3030 | assert(u); | |
3031 | assert(path); | |
3032 | ||
3033 | /* Registers a unit for requiring a certain path and all its | |
3034 | * prefixes. We keep a simple array of these paths in the | |
3035 | * unit, since its usually short. However, we build a prefix | |
3036 | * table for all possible prefixes so that new appearing mount | |
3037 | * units can easily determine which units to make themselves a | |
3038 | * dependency of. */ | |
3039 | ||
3040 | p = strdup(path); | |
3041 | if (!p) | |
3042 | return -ENOMEM; | |
3043 | ||
3044 | path_kill_slashes(p); | |
3045 | ||
3046 | if (!path_is_absolute(p)) { | |
3047 | free(p); | |
3048 | return -EINVAL; | |
3049 | } | |
3050 | ||
3051 | if (!path_is_safe(p)) { | |
3052 | free(p); | |
3053 | return -EPERM; | |
3054 | } | |
3055 | ||
3056 | if (strv_contains(u->requires_mounts_for, p)) { | |
3057 | free(p); | |
3058 | return 0; | |
3059 | } | |
3060 | ||
3061 | r = strv_push(&u->requires_mounts_for, p); | |
3062 | if (r < 0) { | |
3063 | free(p); | |
3064 | return r; | |
3065 | } | |
3066 | ||
3067 | PATH_FOREACH_PREFIX_MORE(prefix, p) { | |
3068 | Set *x; | |
3069 | ||
3070 | x = hashmap_get(u->manager->units_requiring_mounts_for, prefix); | |
3071 | if (!x) { | |
3072 | char *q; | |
3073 | ||
3074 | if (!u->manager->units_requiring_mounts_for) { | |
3075 | u->manager->units_requiring_mounts_for = hashmap_new(string_hash_func, string_compare_func); | |
3076 | if (!u->manager->units_requiring_mounts_for) | |
3077 | return -ENOMEM; | |
3078 | } | |
3079 | ||
3080 | q = strdup(prefix); | |
3081 | if (!q) | |
3082 | return -ENOMEM; | |
3083 | ||
3084 | x = set_new(NULL, NULL); | |
3085 | if (!x) { | |
3086 | free(q); | |
3087 | return -ENOMEM; | |
3088 | } | |
3089 | ||
3090 | r = hashmap_put(u->manager->units_requiring_mounts_for, q, x); | |
3091 | if (r < 0) { | |
3092 | free(q); | |
3093 | set_free(x); | |
3094 | return r; | |
3095 | } | |
3096 | } | |
3097 | ||
3098 | r = set_put(x, u); | |
3099 | if (r < 0) | |
3100 | return r; | |
3101 | } | |
3102 | ||
3103 | return 0; | |
3104 | } | |
3105 | ||
94f04347 LP |
3106 | static const char* const unit_active_state_table[_UNIT_ACTIVE_STATE_MAX] = { |
3107 | [UNIT_ACTIVE] = "active", | |
032ff4af | 3108 | [UNIT_RELOADING] = "reloading", |
94f04347 | 3109 | [UNIT_INACTIVE] = "inactive", |
fdf20a31 | 3110 | [UNIT_FAILED] = "failed", |
94f04347 LP |
3111 | [UNIT_ACTIVATING] = "activating", |
3112 | [UNIT_DEACTIVATING] = "deactivating" | |
3113 | }; | |
3114 | ||
3115 | DEFINE_STRING_TABLE_LOOKUP(unit_active_state, UnitActiveState); | |
3116 | ||
3117 | static const char* const unit_dependency_table[_UNIT_DEPENDENCY_MAX] = { | |
3118 | [UNIT_REQUIRES] = "Requires", | |
9e2f7c11 | 3119 | [UNIT_REQUIRES_OVERRIDABLE] = "RequiresOverridable", |
94f04347 | 3120 | [UNIT_REQUISITE] = "Requisite", |
9e2f7c11 | 3121 | [UNIT_REQUISITE_OVERRIDABLE] = "RequisiteOverridable", |
ac6a4abe MS |
3122 | [UNIT_WANTS] = "Wants", |
3123 | [UNIT_BINDS_TO] = "BindsTo", | |
3124 | [UNIT_PART_OF] = "PartOf", | |
94f04347 | 3125 | [UNIT_REQUIRED_BY] = "RequiredBy", |
9e2f7c11 | 3126 | [UNIT_REQUIRED_BY_OVERRIDABLE] = "RequiredByOverridable", |
94f04347 | 3127 | [UNIT_WANTED_BY] = "WantedBy", |
ac6a4abe MS |
3128 | [UNIT_BOUND_BY] = "BoundBy", |
3129 | [UNIT_CONSISTS_OF] = "ConsistsOf", | |
94f04347 | 3130 | [UNIT_CONFLICTS] = "Conflicts", |
69dd2852 | 3131 | [UNIT_CONFLICTED_BY] = "ConflictedBy", |
94f04347 LP |
3132 | [UNIT_BEFORE] = "Before", |
3133 | [UNIT_AFTER] = "After", | |
57020a3a LP |
3134 | [UNIT_ON_FAILURE] = "OnFailure", |
3135 | [UNIT_TRIGGERS] = "Triggers", | |
4dcc1cb4 | 3136 | [UNIT_TRIGGERED_BY] = "TriggeredBy", |
7f2cddae | 3137 | [UNIT_PROPAGATES_RELOAD_TO] = "PropagatesReloadTo", |
ac6a4abe MS |
3138 | [UNIT_RELOAD_PROPAGATED_FROM] = "ReloadPropagatedFrom", |
3139 | [UNIT_REFERENCES] = "References", | |
3140 | [UNIT_REFERENCED_BY] = "ReferencedBy", | |
94f04347 LP |
3141 | }; |
3142 | ||
3143 | DEFINE_STRING_TABLE_LOOKUP(unit_dependency, UnitDependency); |