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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 | |
718db961 LP |
32 | #include "sd-id128.h" |
33 | #include "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" |
718db961 | 51 | #include "dbus.h" |
613b411c | 52 | #include "execute.h" |
87f0e418 LP |
53 | |
54 | const UnitVTable * const unit_vtable[_UNIT_TYPE_MAX] = { | |
55 | [UNIT_SERVICE] = &service_vtable, | |
56 | [UNIT_TIMER] = &timer_vtable, | |
57 | [UNIT_SOCKET] = &socket_vtable, | |
58 | [UNIT_TARGET] = &target_vtable, | |
59 | [UNIT_DEVICE] = &device_vtable, | |
60 | [UNIT_MOUNT] = &mount_vtable, | |
61 | [UNIT_AUTOMOUNT] = &automount_vtable, | |
07b0b134 | 62 | [UNIT_SNAPSHOT] = &snapshot_vtable, |
01f78473 | 63 | [UNIT_SWAP] = &swap_vtable, |
a016b922 | 64 | [UNIT_PATH] = &path_vtable, |
6c12b52e LP |
65 | [UNIT_SLICE] = &slice_vtable, |
66 | [UNIT_SCOPE] = &scope_vtable | |
87f0e418 LP |
67 | }; |
68 | ||
7d17cfbc | 69 | Unit *unit_new(Manager *m, size_t size) { |
87f0e418 LP |
70 | Unit *u; |
71 | ||
72 | assert(m); | |
ac155bb8 | 73 | assert(size >= sizeof(Unit)); |
87f0e418 | 74 | |
7d17cfbc MS |
75 | u = malloc0(size); |
76 | if (!u) | |
87f0e418 LP |
77 | return NULL; |
78 | ||
ac155bb8 MS |
79 | u->names = set_new(string_hash_func, string_compare_func); |
80 | if (!u->names) { | |
87f0e418 LP |
81 | free(u); |
82 | return NULL; | |
83 | } | |
84 | ||
ac155bb8 MS |
85 | u->manager = m; |
86 | u->type = _UNIT_TYPE_INVALID; | |
87 | u->deserialized_job = _JOB_TYPE_INVALID; | |
88 | u->default_dependencies = true; | |
89 | u->unit_file_state = _UNIT_FILE_STATE_INVALID; | |
d420282b | 90 | u->on_failure_job_mode = JOB_REPLACE; |
87f0e418 LP |
91 | |
92 | return u; | |
93 | } | |
94 | ||
f278026d LP |
95 | bool unit_has_name(Unit *u, const char *name) { |
96 | assert(u); | |
97 | assert(name); | |
98 | ||
ac155bb8 | 99 | return !!set_get(u->names, (char*) name); |
f278026d LP |
100 | } |
101 | ||
87f0e418 LP |
102 | int unit_add_name(Unit *u, const char *text) { |
103 | UnitType t; | |
276c3e78 | 104 | char *s, *i = NULL; |
87f0e418 LP |
105 | int r; |
106 | ||
107 | assert(u); | |
108 | assert(text); | |
109 | ||
9e2f7c11 | 110 | if (unit_name_is_template(text)) { |
ac155bb8 | 111 | if (!u->instance) |
9e2f7c11 | 112 | return -EINVAL; |
87f0e418 | 113 | |
ac155bb8 | 114 | s = unit_name_replace_instance(text, u->instance); |
9e2f7c11 LP |
115 | } else |
116 | s = strdup(text); | |
87f0e418 | 117 | |
9e2f7c11 LP |
118 | if (!s) |
119 | return -ENOMEM; | |
87f0e418 | 120 | |
b9c0d441 | 121 | if (!unit_name_is_valid(s, false)) { |
9e2f7c11 LP |
122 | r = -EINVAL; |
123 | goto fail; | |
124 | } | |
e537352b | 125 | |
9e2f7c11 | 126 | assert_se((t = unit_name_to_type(s)) >= 0); |
87f0e418 | 127 | |
ac155bb8 | 128 | if (u->type != _UNIT_TYPE_INVALID && t != u->type) { |
9e2f7c11 LP |
129 | r = -EINVAL; |
130 | goto fail; | |
131 | } | |
87f0e418 | 132 | |
e48614c4 ZJS |
133 | r = unit_name_to_instance(s, &i); |
134 | if (r < 0) | |
9e2f7c11 | 135 | goto fail; |
87f0e418 | 136 | |
796ba554 LP |
137 | if (i && unit_vtable[t]->no_instances) { |
138 | r = -EINVAL; | |
9e2f7c11 | 139 | goto fail; |
796ba554 | 140 | } |
9e2f7c11 | 141 | |
276c3e78 LP |
142 | /* Ensure that this unit is either instanced or not instanced, |
143 | * but not both. */ | |
ac155bb8 | 144 | if (u->type != _UNIT_TYPE_INVALID && !u->instance != !i) { |
9e2f7c11 LP |
145 | r = -EINVAL; |
146 | goto fail; | |
147 | } | |
148 | ||
149 | if (unit_vtable[t]->no_alias && | |
ac155bb8 MS |
150 | !set_isempty(u->names) && |
151 | !set_get(u->names, s)) { | |
9e2f7c11 LP |
152 | r = -EEXIST; |
153 | goto fail; | |
154 | } | |
155 | ||
ac155bb8 | 156 | if (hashmap_size(u->manager->units) >= MANAGER_MAX_NAMES) { |
4f0f902f LP |
157 | r = -E2BIG; |
158 | goto fail; | |
159 | } | |
160 | ||
e48614c4 ZJS |
161 | r = set_put(u->names, s); |
162 | if (r < 0) { | |
9e2f7c11 LP |
163 | if (r == -EEXIST) |
164 | r = 0; | |
165 | goto fail; | |
87f0e418 LP |
166 | } |
167 | ||
e48614c4 ZJS |
168 | r = hashmap_put(u->manager->units, s, u); |
169 | if (r < 0) { | |
ac155bb8 | 170 | set_remove(u->names, s); |
9e2f7c11 | 171 | goto fail; |
87f0e418 LP |
172 | } |
173 | ||
ac155bb8 | 174 | if (u->type == _UNIT_TYPE_INVALID) { |
ef734fd6 | 175 | |
ac155bb8 MS |
176 | u->type = t; |
177 | u->id = s; | |
178 | u->instance = i; | |
9e2f7c11 | 179 | |
71fda00f | 180 | LIST_PREPEND(units_by_type, u->manager->units_by_type[t], u); |
e537352b LP |
181 | |
182 | if (UNIT_VTABLE(u)->init) | |
183 | UNIT_VTABLE(u)->init(u); | |
9e2f7c11 LP |
184 | } else |
185 | free(i); | |
87f0e418 | 186 | |
c1e1601e | 187 | unit_add_to_dbus_queue(u); |
87f0e418 | 188 | return 0; |
9e2f7c11 LP |
189 | |
190 | fail: | |
191 | free(s); | |
192 | free(i); | |
193 | ||
194 | return r; | |
87f0e418 LP |
195 | } |
196 | ||
0ae97ec1 | 197 | int unit_choose_id(Unit *u, const char *name) { |
68eda4bd RC |
198 | char *s, *i; |
199 | _cleanup_free_ char *t = NULL; | |
276c3e78 | 200 | int r; |
0ae97ec1 LP |
201 | |
202 | assert(u); | |
203 | assert(name); | |
204 | ||
9e2f7c11 LP |
205 | if (unit_name_is_template(name)) { |
206 | ||
ac155bb8 | 207 | if (!u->instance) |
9e2f7c11 LP |
208 | return -EINVAL; |
209 | ||
e48614c4 ZJS |
210 | t = unit_name_replace_instance(name, u->instance); |
211 | if (!t) | |
9e2f7c11 LP |
212 | return -ENOMEM; |
213 | ||
214 | name = t; | |
215 | } | |
216 | ||
0ae97ec1 | 217 | /* Selects one of the names of this unit as the id */ |
ac155bb8 | 218 | s = set_get(u->names, (char*) name); |
0ae97ec1 | 219 | |
9e2f7c11 | 220 | if (!s) |
0ae97ec1 LP |
221 | return -ENOENT; |
222 | ||
e48614c4 ZJS |
223 | r = unit_name_to_instance(s, &i); |
224 | if (r < 0) | |
276c3e78 LP |
225 | return r; |
226 | ||
ac155bb8 | 227 | u->id = s; |
276c3e78 | 228 | |
ac155bb8 MS |
229 | free(u->instance); |
230 | u->instance = i; | |
276c3e78 | 231 | |
c1e1601e | 232 | unit_add_to_dbus_queue(u); |
9e2f7c11 | 233 | |
0ae97ec1 LP |
234 | return 0; |
235 | } | |
236 | ||
f50e0a01 LP |
237 | int unit_set_description(Unit *u, const char *description) { |
238 | char *s; | |
239 | ||
240 | assert(u); | |
241 | ||
8aec412f LP |
242 | if (isempty(description)) |
243 | s = NULL; | |
244 | else { | |
245 | s = strdup(description); | |
246 | if (!s) | |
247 | return -ENOMEM; | |
248 | } | |
f50e0a01 | 249 | |
ac155bb8 MS |
250 | free(u->description); |
251 | u->description = s; | |
c1e1601e LP |
252 | |
253 | unit_add_to_dbus_queue(u); | |
f50e0a01 LP |
254 | return 0; |
255 | } | |
256 | ||
701cc384 LP |
257 | bool unit_check_gc(Unit *u) { |
258 | assert(u); | |
259 | ||
ac155bb8 | 260 | if (u->load_state == UNIT_STUB) |
b86d44e5 LP |
261 | return true; |
262 | ||
701cc384 LP |
263 | if (UNIT_VTABLE(u)->no_gc) |
264 | return true; | |
265 | ||
ac155bb8 | 266 | if (u->no_gc) |
6c073082 LP |
267 | return true; |
268 | ||
ac155bb8 | 269 | if (u->job) |
701cc384 LP |
270 | return true; |
271 | ||
e0209d83 MS |
272 | if (u->nop_job) |
273 | return true; | |
274 | ||
701cc384 LP |
275 | if (unit_active_state(u) != UNIT_INACTIVE) |
276 | return true; | |
277 | ||
9d576438 LP |
278 | if (u->refs) |
279 | return true; | |
280 | ||
701cc384 LP |
281 | if (UNIT_VTABLE(u)->check_gc) |
282 | if (UNIT_VTABLE(u)->check_gc(u)) | |
283 | return true; | |
284 | ||
285 | return false; | |
286 | } | |
287 | ||
87f0e418 LP |
288 | void unit_add_to_load_queue(Unit *u) { |
289 | assert(u); | |
ac155bb8 | 290 | assert(u->type != _UNIT_TYPE_INVALID); |
87f0e418 | 291 | |
ac155bb8 | 292 | if (u->load_state != UNIT_STUB || u->in_load_queue) |
87f0e418 LP |
293 | return; |
294 | ||
71fda00f | 295 | LIST_PREPEND(load_queue, u->manager->load_queue, u); |
ac155bb8 | 296 | u->in_load_queue = true; |
87f0e418 LP |
297 | } |
298 | ||
23a177ef LP |
299 | void unit_add_to_cleanup_queue(Unit *u) { |
300 | assert(u); | |
301 | ||
ac155bb8 | 302 | if (u->in_cleanup_queue) |
23a177ef LP |
303 | return; |
304 | ||
71fda00f | 305 | LIST_PREPEND(cleanup_queue, u->manager->cleanup_queue, u); |
ac155bb8 | 306 | u->in_cleanup_queue = true; |
23a177ef LP |
307 | } |
308 | ||
701cc384 LP |
309 | void unit_add_to_gc_queue(Unit *u) { |
310 | assert(u); | |
311 | ||
ac155bb8 | 312 | if (u->in_gc_queue || u->in_cleanup_queue) |
701cc384 LP |
313 | return; |
314 | ||
315 | if (unit_check_gc(u)) | |
316 | return; | |
317 | ||
71fda00f | 318 | LIST_PREPEND(gc_queue, u->manager->gc_queue, u); |
ac155bb8 | 319 | u->in_gc_queue = true; |
701cc384 | 320 | |
ac155bb8 | 321 | u->manager->n_in_gc_queue ++; |
701cc384 LP |
322 | } |
323 | ||
c1e1601e LP |
324 | void unit_add_to_dbus_queue(Unit *u) { |
325 | assert(u); | |
ac155bb8 | 326 | assert(u->type != _UNIT_TYPE_INVALID); |
c1e1601e | 327 | |
ac155bb8 | 328 | if (u->load_state == UNIT_STUB || u->in_dbus_queue) |
c1e1601e LP |
329 | return; |
330 | ||
a567261a | 331 | /* Shortcut things if nobody cares */ |
718db961 | 332 | if (set_isempty(u->manager->subscribed)) { |
ac155bb8 | 333 | u->sent_dbus_new_signal = true; |
94b6dfa2 LP |
334 | return; |
335 | } | |
336 | ||
71fda00f | 337 | LIST_PREPEND(dbus_queue, u->manager->dbus_unit_queue, u); |
ac155bb8 | 338 | u->in_dbus_queue = true; |
c1e1601e LP |
339 | } |
340 | ||
87f0e418 LP |
341 | static void bidi_set_free(Unit *u, Set *s) { |
342 | Iterator i; | |
343 | Unit *other; | |
344 | ||
345 | assert(u); | |
346 | ||
347 | /* Frees the set and makes sure we are dropped from the | |
348 | * inverse pointers */ | |
349 | ||
350 | SET_FOREACH(other, s, i) { | |
351 | UnitDependency d; | |
352 | ||
353 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) | |
ac155bb8 | 354 | set_remove(other->dependencies[d], u); |
701cc384 LP |
355 | |
356 | unit_add_to_gc_queue(other); | |
87f0e418 LP |
357 | } |
358 | ||
359 | set_free(s); | |
360 | } | |
361 | ||
c2756a68 LP |
362 | static void unit_remove_transient(Unit *u) { |
363 | char **i; | |
364 | ||
365 | assert(u); | |
366 | ||
367 | if (!u->transient) | |
368 | return; | |
369 | ||
370 | if (u->fragment_path) | |
371 | unlink(u->fragment_path); | |
372 | ||
373 | STRV_FOREACH(i, u->dropin_paths) { | |
374 | _cleanup_free_ char *p = NULL; | |
375 | int r; | |
376 | ||
377 | unlink(*i); | |
378 | ||
379 | r = path_get_parent(*i, &p); | |
380 | if (r >= 0) | |
381 | rmdir(p); | |
382 | } | |
383 | } | |
384 | ||
a57f7e2c LP |
385 | static void unit_free_requires_mounts_for(Unit *u) { |
386 | char **j; | |
387 | ||
388 | STRV_FOREACH(j, u->requires_mounts_for) { | |
389 | char s[strlen(*j) + 1]; | |
390 | ||
391 | PATH_FOREACH_PREFIX_MORE(s, *j) { | |
392 | char *y; | |
393 | Set *x; | |
394 | ||
395 | x = hashmap_get2(u->manager->units_requiring_mounts_for, s, (void**) &y); | |
396 | if (!x) | |
397 | continue; | |
398 | ||
399 | set_remove(x, u); | |
400 | ||
401 | if (set_isempty(x)) { | |
402 | hashmap_remove(u->manager->units_requiring_mounts_for, y); | |
403 | free(y); | |
404 | set_free(x); | |
405 | } | |
406 | } | |
407 | } | |
408 | ||
409 | strv_free(u->requires_mounts_for); | |
410 | u->requires_mounts_for = NULL; | |
411 | } | |
412 | ||
87f0e418 LP |
413 | void unit_free(Unit *u) { |
414 | UnitDependency d; | |
415 | Iterator i; | |
416 | char *t; | |
417 | ||
418 | assert(u); | |
419 | ||
c2756a68 LP |
420 | if (u->manager->n_reloading <= 0) |
421 | unit_remove_transient(u); | |
422 | ||
c1e1601e LP |
423 | bus_unit_send_removed_signal(u); |
424 | ||
ac155bb8 | 425 | if (u->load_state != UNIT_STUB) |
a013b84b LP |
426 | if (UNIT_VTABLE(u)->done) |
427 | UNIT_VTABLE(u)->done(u); | |
428 | ||
a57f7e2c LP |
429 | unit_free_requires_mounts_for(u); |
430 | ||
ac155bb8 MS |
431 | SET_FOREACH(t, u->names, i) |
432 | hashmap_remove_value(u->manager->units, t, u); | |
87f0e418 | 433 | |
97e7d748 MS |
434 | if (u->job) { |
435 | Job *j = u->job; | |
436 | job_uninstall(j); | |
437 | job_free(j); | |
438 | } | |
964e0949 | 439 | |
e0209d83 MS |
440 | if (u->nop_job) { |
441 | Job *j = u->nop_job; | |
442 | job_uninstall(j); | |
443 | job_free(j); | |
444 | } | |
445 | ||
964e0949 | 446 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) |
ac155bb8 | 447 | bidi_set_free(u, u->dependencies[d]); |
964e0949 | 448 | |
ac155bb8 | 449 | if (u->type != _UNIT_TYPE_INVALID) |
71fda00f | 450 | LIST_REMOVE(units_by_type, u->manager->units_by_type[u->type], u); |
ef734fd6 | 451 | |
ac155bb8 | 452 | if (u->in_load_queue) |
71fda00f | 453 | LIST_REMOVE(load_queue, u->manager->load_queue, u); |
87f0e418 | 454 | |
ac155bb8 | 455 | if (u->in_dbus_queue) |
71fda00f | 456 | LIST_REMOVE(dbus_queue, u->manager->dbus_unit_queue, u); |
c1e1601e | 457 | |
ac155bb8 | 458 | if (u->in_cleanup_queue) |
71fda00f | 459 | LIST_REMOVE(cleanup_queue, u->manager->cleanup_queue, u); |
23a177ef | 460 | |
ac155bb8 | 461 | if (u->in_gc_queue) { |
71fda00f | 462 | LIST_REMOVE(gc_queue, u->manager->gc_queue, u); |
ac155bb8 | 463 | u->manager->n_in_gc_queue--; |
701cc384 LP |
464 | } |
465 | ||
4ad49000 | 466 | if (u->in_cgroup_queue) |
71fda00f | 467 | LIST_REMOVE(cgroup_queue, u->manager->cgroup_queue, u); |
87f0e418 | 468 | |
72673e86 LP |
469 | if (u->cgroup_path) { |
470 | hashmap_remove(u->manager->cgroup_unit, u->cgroup_path); | |
471 | free(u->cgroup_path); | |
472 | } | |
473 | ||
ac155bb8 | 474 | free(u->description); |
49dbfa7b | 475 | strv_free(u->documentation); |
ac155bb8 | 476 | free(u->fragment_path); |
1b64d026 | 477 | free(u->source_path); |
ae7a7182 | 478 | strv_free(u->dropin_paths); |
ac155bb8 | 479 | free(u->instance); |
87f0e418 | 480 | |
ac155bb8 | 481 | set_free_free(u->names); |
87f0e418 | 482 | |
ac155bb8 | 483 | condition_free_list(u->conditions); |
52661efd | 484 | |
702a2d8f LP |
485 | unit_ref_unset(&u->slice); |
486 | ||
ac155bb8 MS |
487 | while (u->refs) |
488 | unit_ref_unset(u->refs); | |
57020a3a | 489 | |
87f0e418 LP |
490 | free(u); |
491 | } | |
492 | ||
493 | UnitActiveState unit_active_state(Unit *u) { | |
494 | assert(u); | |
495 | ||
ac155bb8 | 496 | if (u->load_state == UNIT_MERGED) |
6124958c LP |
497 | return unit_active_state(unit_follow_merge(u)); |
498 | ||
499 | /* After a reload it might happen that a unit is not correctly | |
500 | * loaded but still has a process around. That's why we won't | |
fdf20a31 | 501 | * shortcut failed loading to UNIT_INACTIVE_FAILED. */ |
87f0e418 LP |
502 | |
503 | return UNIT_VTABLE(u)->active_state(u); | |
504 | } | |
505 | ||
10a94420 LP |
506 | const char* unit_sub_state_to_string(Unit *u) { |
507 | assert(u); | |
508 | ||
509 | return UNIT_VTABLE(u)->sub_state_to_string(u); | |
510 | } | |
511 | ||
23a177ef LP |
512 | static void complete_move(Set **s, Set **other) { |
513 | assert(s); | |
514 | assert(other); | |
87f0e418 | 515 | |
23a177ef LP |
516 | if (!*other) |
517 | return; | |
87f0e418 LP |
518 | |
519 | if (*s) | |
23a177ef LP |
520 | set_move(*s, *other); |
521 | else { | |
522 | *s = *other; | |
523 | *other = NULL; | |
524 | } | |
525 | } | |
87f0e418 | 526 | |
23a177ef LP |
527 | static void merge_names(Unit *u, Unit *other) { |
528 | char *t; | |
529 | Iterator i; | |
87f0e418 | 530 | |
23a177ef LP |
531 | assert(u); |
532 | assert(other); | |
533 | ||
ac155bb8 | 534 | complete_move(&u->names, &other->names); |
23a177ef | 535 | |
ac155bb8 MS |
536 | set_free_free(other->names); |
537 | other->names = NULL; | |
538 | other->id = NULL; | |
23a177ef | 539 | |
ac155bb8 MS |
540 | SET_FOREACH(t, u->names, i) |
541 | assert_se(hashmap_replace(u->manager->units, t, u) == 0); | |
87f0e418 LP |
542 | } |
543 | ||
23a177ef LP |
544 | static void merge_dependencies(Unit *u, Unit *other, UnitDependency d) { |
545 | Iterator i; | |
546 | Unit *back; | |
87f0e418 | 547 | int r; |
23a177ef LP |
548 | |
549 | assert(u); | |
550 | assert(other); | |
551 | assert(d < _UNIT_DEPENDENCY_MAX); | |
552 | ||
83a95334 | 553 | /* Fix backwards pointers */ |
ac155bb8 | 554 | SET_FOREACH(back, other->dependencies[d], i) { |
23a177ef LP |
555 | UnitDependency k; |
556 | ||
e48614c4 ZJS |
557 | for (k = 0; k < _UNIT_DEPENDENCY_MAX; k++) { |
558 | r = set_remove_and_put(back->dependencies[k], other, u); | |
559 | if (r == -EEXIST) | |
560 | set_remove(back->dependencies[k], other); | |
561 | else | |
562 | assert(r >= 0 || r == -ENOENT); | |
563 | } | |
23a177ef LP |
564 | } |
565 | ||
ac155bb8 | 566 | complete_move(&u->dependencies[d], &other->dependencies[d]); |
23a177ef | 567 | |
ac155bb8 MS |
568 | set_free(other->dependencies[d]); |
569 | other->dependencies[d] = NULL; | |
23a177ef LP |
570 | } |
571 | ||
572 | int unit_merge(Unit *u, Unit *other) { | |
87f0e418 LP |
573 | UnitDependency d; |
574 | ||
575 | assert(u); | |
576 | assert(other); | |
ac155bb8 MS |
577 | assert(u->manager == other->manager); |
578 | assert(u->type != _UNIT_TYPE_INVALID); | |
87f0e418 | 579 | |
cc916967 LP |
580 | other = unit_follow_merge(other); |
581 | ||
23a177ef LP |
582 | if (other == u) |
583 | return 0; | |
584 | ||
ac155bb8 | 585 | if (u->type != other->type) |
9e2f7c11 LP |
586 | return -EINVAL; |
587 | ||
ac155bb8 | 588 | if (!u->instance != !other->instance) |
87f0e418 LP |
589 | return -EINVAL; |
590 | ||
ac155bb8 | 591 | if (other->load_state != UNIT_STUB && |
c2756a68 | 592 | other->load_state != UNIT_NOT_FOUND) |
23a177ef | 593 | return -EEXIST; |
87f0e418 | 594 | |
ac155bb8 | 595 | if (other->job) |
819e213f LP |
596 | return -EEXIST; |
597 | ||
e0209d83 MS |
598 | if (other->nop_job) |
599 | return -EEXIST; | |
600 | ||
fdf20a31 | 601 | if (!UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other))) |
819e213f LP |
602 | return -EEXIST; |
603 | ||
87f0e418 | 604 | /* Merge names */ |
23a177ef | 605 | merge_names(u, other); |
87f0e418 | 606 | |
57020a3a | 607 | /* Redirect all references */ |
ac155bb8 MS |
608 | while (other->refs) |
609 | unit_ref_set(other->refs, u); | |
57020a3a | 610 | |
87f0e418 LP |
611 | /* Merge dependencies */ |
612 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) | |
23a177ef | 613 | merge_dependencies(u, other, d); |
87f0e418 | 614 | |
ac155bb8 MS |
615 | other->load_state = UNIT_MERGED; |
616 | other->merged_into = u; | |
23a177ef | 617 | |
3616a49c LP |
618 | /* If there is still some data attached to the other node, we |
619 | * don't need it anymore, and can free it. */ | |
ac155bb8 | 620 | if (other->load_state != UNIT_STUB) |
3616a49c LP |
621 | if (UNIT_VTABLE(other)->done) |
622 | UNIT_VTABLE(other)->done(other); | |
623 | ||
624 | unit_add_to_dbus_queue(u); | |
23a177ef LP |
625 | unit_add_to_cleanup_queue(other); |
626 | ||
627 | return 0; | |
628 | } | |
629 | ||
630 | int unit_merge_by_name(Unit *u, const char *name) { | |
631 | Unit *other; | |
9e2f7c11 | 632 | int r; |
68eda4bd | 633 | _cleanup_free_ char *s = NULL; |
23a177ef LP |
634 | |
635 | assert(u); | |
636 | assert(name); | |
637 | ||
9e2f7c11 | 638 | if (unit_name_is_template(name)) { |
ac155bb8 | 639 | if (!u->instance) |
9e2f7c11 LP |
640 | return -EINVAL; |
641 | ||
e48614c4 ZJS |
642 | s = unit_name_replace_instance(name, u->instance); |
643 | if (!s) | |
9e2f7c11 LP |
644 | return -ENOMEM; |
645 | ||
646 | name = s; | |
647 | } | |
648 | ||
c2756a68 LP |
649 | other = manager_get_unit(u->manager, name); |
650 | if (!other) | |
9e2f7c11 LP |
651 | r = unit_add_name(u, name); |
652 | else | |
653 | r = unit_merge(u, other); | |
23a177ef | 654 | |
9e2f7c11 | 655 | return r; |
23a177ef LP |
656 | } |
657 | ||
658 | Unit* unit_follow_merge(Unit *u) { | |
659 | assert(u); | |
660 | ||
ac155bb8 MS |
661 | while (u->load_state == UNIT_MERGED) |
662 | assert_se(u = u->merged_into); | |
23a177ef LP |
663 | |
664 | return u; | |
665 | } | |
666 | ||
667 | int unit_add_exec_dependencies(Unit *u, ExecContext *c) { | |
668 | int r; | |
669 | ||
670 | assert(u); | |
671 | assert(c); | |
672 | ||
ecc6e2b8 LP |
673 | if (c->std_output != EXEC_OUTPUT_KMSG && |
674 | c->std_output != EXEC_OUTPUT_SYSLOG && | |
706343f4 | 675 | c->std_output != EXEC_OUTPUT_JOURNAL && |
28dbc1e8 LP |
676 | c->std_output != EXEC_OUTPUT_KMSG_AND_CONSOLE && |
677 | c->std_output != EXEC_OUTPUT_SYSLOG_AND_CONSOLE && | |
706343f4 | 678 | c->std_output != EXEC_OUTPUT_JOURNAL_AND_CONSOLE && |
ecc6e2b8 | 679 | c->std_error != EXEC_OUTPUT_KMSG && |
085c98af | 680 | c->std_error != EXEC_OUTPUT_SYSLOG && |
706343f4 | 681 | c->std_error != EXEC_OUTPUT_JOURNAL && |
085c98af | 682 | c->std_error != EXEC_OUTPUT_KMSG_AND_CONSOLE && |
706343f4 | 683 | c->std_error != EXEC_OUTPUT_JOURNAL_AND_CONSOLE && |
28dbc1e8 | 684 | c->std_error != EXEC_OUTPUT_SYSLOG_AND_CONSOLE) |
23a177ef LP |
685 | return 0; |
686 | ||
687 | /* If syslog or kernel logging is requested, make sure our own | |
688 | * logging daemon is run first. */ | |
689 | ||
9d246da3 MS |
690 | if (u->manager->running_as == SYSTEMD_SYSTEM) { |
691 | r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_JOURNALD_SOCKET, NULL, true); | |
692 | if (r < 0) | |
23a177ef | 693 | return r; |
9d246da3 | 694 | } |
23a177ef | 695 | |
87f0e418 LP |
696 | return 0; |
697 | } | |
698 | ||
87f0e418 LP |
699 | const char *unit_description(Unit *u) { |
700 | assert(u); | |
701 | ||
ac155bb8 MS |
702 | if (u->description) |
703 | return u->description; | |
87f0e418 | 704 | |
ac155bb8 | 705 | return strna(u->id); |
87f0e418 LP |
706 | } |
707 | ||
708 | void unit_dump(Unit *u, FILE *f, const char *prefix) { | |
49dbfa7b | 709 | char *t, **j; |
87f0e418 LP |
710 | UnitDependency d; |
711 | Iterator i; | |
68eda4bd | 712 | _cleanup_free_ char *p2 = NULL; |
47be870b | 713 | const char *prefix2; |
173e3821 LP |
714 | char |
715 | timestamp1[FORMAT_TIMESTAMP_MAX], | |
716 | timestamp2[FORMAT_TIMESTAMP_MAX], | |
717 | timestamp3[FORMAT_TIMESTAMP_MAX], | |
faf919f1 LP |
718 | timestamp4[FORMAT_TIMESTAMP_MAX], |
719 | timespan[FORMAT_TIMESPAN_MAX]; | |
a7f241db | 720 | Unit *following; |
eeaedb7c LP |
721 | _cleanup_set_free_ Set *following_set = NULL; |
722 | int r; | |
87f0e418 LP |
723 | |
724 | assert(u); | |
ac155bb8 | 725 | assert(u->type >= 0); |
87f0e418 LP |
726 | |
727 | if (!prefix) | |
728 | prefix = ""; | |
47be870b LP |
729 | p2 = strappend(prefix, "\t"); |
730 | prefix2 = p2 ? p2 : prefix; | |
87f0e418 LP |
731 | |
732 | fprintf(f, | |
40d50879 | 733 | "%s-> Unit %s:\n" |
87f0e418 | 734 | "%s\tDescription: %s\n" |
9e2f7c11 | 735 | "%s\tInstance: %s\n" |
87f0e418 | 736 | "%s\tUnit Load State: %s\n" |
2fad8195 | 737 | "%s\tUnit Active State: %s\n" |
173e3821 | 738 | "%s\tInactive Exit Timestamp: %s\n" |
2fad8195 | 739 | "%s\tActive Enter Timestamp: %s\n" |
701cc384 | 740 | "%s\tActive Exit Timestamp: %s\n" |
173e3821 | 741 | "%s\tInactive Enter Timestamp: %s\n" |
45fb0699 | 742 | "%s\tGC Check Good: %s\n" |
9444b1f2 | 743 | "%s\tNeed Daemon Reload: %s\n" |
c2756a68 | 744 | "%s\tTransient: %s\n" |
4ad49000 LP |
745 | "%s\tSlice: %s\n" |
746 | "%s\tCGroup: %s\n" | |
747 | "%s\tCGroup realized: %s\n" | |
6414b7c9 DS |
748 | "%s\tCGroup mask: 0x%x\n" |
749 | "%s\tCGroup members mask: 0x%x\n", | |
ac155bb8 | 750 | prefix, u->id, |
87f0e418 | 751 | prefix, unit_description(u), |
ac155bb8 MS |
752 | prefix, strna(u->instance), |
753 | prefix, unit_load_state_to_string(u->load_state), | |
2fad8195 | 754 | prefix, unit_active_state_to_string(unit_active_state(u)), |
ac155bb8 MS |
755 | prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->inactive_exit_timestamp.realtime)), |
756 | prefix, strna(format_timestamp(timestamp2, sizeof(timestamp2), u->active_enter_timestamp.realtime)), | |
757 | prefix, strna(format_timestamp(timestamp3, sizeof(timestamp3), u->active_exit_timestamp.realtime)), | |
758 | prefix, strna(format_timestamp(timestamp4, sizeof(timestamp4), u->inactive_enter_timestamp.realtime)), | |
45fb0699 | 759 | prefix, yes_no(unit_check_gc(u)), |
9444b1f2 | 760 | prefix, yes_no(unit_need_daemon_reload(u)), |
c2756a68 | 761 | prefix, yes_no(u->transient), |
4ad49000 LP |
762 | prefix, strna(unit_slice_name(u)), |
763 | prefix, strna(u->cgroup_path), | |
764 | prefix, yes_no(u->cgroup_realized), | |
6414b7c9 DS |
765 | prefix, u->cgroup_mask, |
766 | prefix, u->cgroup_members_mask); | |
0301abf4 | 767 | |
ac155bb8 | 768 | SET_FOREACH(t, u->names, i) |
87f0e418 LP |
769 | fprintf(f, "%s\tName: %s\n", prefix, t); |
770 | ||
49dbfa7b LP |
771 | STRV_FOREACH(j, u->documentation) |
772 | fprintf(f, "%s\tDocumentation: %s\n", prefix, *j); | |
773 | ||
eeaedb7c LP |
774 | following = unit_following(u); |
775 | if (following) | |
ac155bb8 | 776 | fprintf(f, "%s\tFollowing: %s\n", prefix, following->id); |
8fe914ec | 777 | |
eeaedb7c LP |
778 | r = unit_following_set(u, &following_set); |
779 | if (r >= 0) { | |
780 | Unit *other; | |
781 | ||
782 | SET_FOREACH(other, following_set, i) | |
783 | fprintf(f, "%s\tFollowing Set Member: %s\n", prefix, other->id); | |
784 | } | |
785 | ||
ac155bb8 MS |
786 | if (u->fragment_path) |
787 | fprintf(f, "%s\tFragment Path: %s\n", prefix, u->fragment_path); | |
23a177ef | 788 | |
1b64d026 LP |
789 | if (u->source_path) |
790 | fprintf(f, "%s\tSource Path: %s\n", prefix, u->source_path); | |
791 | ||
ae7a7182 | 792 | STRV_FOREACH(j, u->dropin_paths) |
2875e22b | 793 | fprintf(f, "%s\tDropIn Path: %s\n", prefix, *j); |
ae7a7182 | 794 | |
ac155bb8 | 795 | if (u->job_timeout > 0) |
2fa4092c | 796 | fprintf(f, "%s\tJob Timeout: %s\n", prefix, format_timespan(timespan, sizeof(timespan), u->job_timeout, 0)); |
faf919f1 | 797 | |
ac155bb8 | 798 | condition_dump_list(u->conditions, f, prefix); |
52661efd | 799 | |
ac155bb8 | 800 | if (dual_timestamp_is_set(&u->condition_timestamp)) |
2791a8f8 LP |
801 | fprintf(f, |
802 | "%s\tCondition Timestamp: %s\n" | |
803 | "%s\tCondition Result: %s\n", | |
ac155bb8 MS |
804 | prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->condition_timestamp.realtime)), |
805 | prefix, yes_no(u->condition_result)); | |
2791a8f8 | 806 | |
87f0e418 LP |
807 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) { |
808 | Unit *other; | |
809 | ||
ac155bb8 MS |
810 | SET_FOREACH(other, u->dependencies[d], i) |
811 | fprintf(f, "%s\t%s: %s\n", prefix, unit_dependency_to_string(d), other->id); | |
87f0e418 LP |
812 | } |
813 | ||
7c8fa05c | 814 | if (!strv_isempty(u->requires_mounts_for)) { |
7c8fa05c LP |
815 | fprintf(f, |
816 | "%s\tRequiresMountsFor:", prefix); | |
817 | ||
818 | STRV_FOREACH(j, u->requires_mounts_for) | |
819 | fprintf(f, " %s", *j); | |
820 | ||
821 | fputs("\n", f); | |
822 | } | |
823 | ||
ac155bb8 | 824 | if (u->load_state == UNIT_LOADED) { |
ab1f0633 | 825 | |
b0650475 | 826 | fprintf(f, |
a40eb732 | 827 | "%s\tStopWhenUnneeded: %s\n" |
b5e9dba8 LP |
828 | "%s\tRefuseManualStart: %s\n" |
829 | "%s\tRefuseManualStop: %s\n" | |
222ae6a8 | 830 | "%s\tDefaultDependencies: %s\n" |
d420282b | 831 | "%s\tOnFailureJobMode: %s\n" |
7a6000a6 LP |
832 | "%s\tIgnoreOnIsolate: %s\n" |
833 | "%s\tIgnoreOnSnapshot: %s\n", | |
ac155bb8 MS |
834 | prefix, yes_no(u->stop_when_unneeded), |
835 | prefix, yes_no(u->refuse_manual_start), | |
836 | prefix, yes_no(u->refuse_manual_stop), | |
837 | prefix, yes_no(u->default_dependencies), | |
d420282b | 838 | prefix, job_mode_to_string(u->on_failure_job_mode), |
ac155bb8 MS |
839 | prefix, yes_no(u->ignore_on_isolate), |
840 | prefix, yes_no(u->ignore_on_snapshot)); | |
841 | ||
23a177ef LP |
842 | if (UNIT_VTABLE(u)->dump) |
843 | UNIT_VTABLE(u)->dump(u, f, prefix2); | |
b0650475 | 844 | |
ac155bb8 | 845 | } else if (u->load_state == UNIT_MERGED) |
b0650475 LP |
846 | fprintf(f, |
847 | "%s\tMerged into: %s\n", | |
ac155bb8 MS |
848 | prefix, u->merged_into->id); |
849 | else if (u->load_state == UNIT_ERROR) | |
850 | fprintf(f, "%s\tLoad Error Code: %s\n", prefix, strerror(-u->load_error)); | |
8821a00f | 851 | |
87f0e418 | 852 | |
ac155bb8 MS |
853 | if (u->job) |
854 | job_dump(u->job, f, prefix2); | |
87f0e418 | 855 | |
e0209d83 MS |
856 | if (u->nop_job) |
857 | job_dump(u->nop_job, f, prefix2); | |
858 | ||
87f0e418 LP |
859 | } |
860 | ||
861 | /* Common implementation for multiple backends */ | |
e537352b | 862 | int unit_load_fragment_and_dropin(Unit *u) { |
23a177ef LP |
863 | int r; |
864 | ||
865 | assert(u); | |
23a177ef | 866 | |
e48614c4 | 867 | /* Load a .{service,socket,...} file */ |
4ad49000 LP |
868 | r = unit_load_fragment(u); |
869 | if (r < 0) | |
23a177ef LP |
870 | return r; |
871 | ||
ac155bb8 | 872 | if (u->load_state == UNIT_STUB) |
23a177ef LP |
873 | return -ENOENT; |
874 | ||
875 | /* Load drop-in directory data */ | |
4ad49000 LP |
876 | r = unit_load_dropin(unit_follow_merge(u)); |
877 | if (r < 0) | |
23a177ef LP |
878 | return r; |
879 | ||
880 | return 0; | |
881 | } | |
882 | ||
883 | /* Common implementation for multiple backends */ | |
e537352b | 884 | int unit_load_fragment_and_dropin_optional(Unit *u) { |
23a177ef | 885 | int r; |
87f0e418 LP |
886 | |
887 | assert(u); | |
888 | ||
23a177ef LP |
889 | /* Same as unit_load_fragment_and_dropin(), but whether |
890 | * something can be loaded or not doesn't matter. */ | |
891 | ||
892 | /* Load a .service file */ | |
4ad49000 LP |
893 | r = unit_load_fragment(u); |
894 | if (r < 0) | |
87f0e418 LP |
895 | return r; |
896 | ||
ac155bb8 MS |
897 | if (u->load_state == UNIT_STUB) |
898 | u->load_state = UNIT_LOADED; | |
d46de8a1 | 899 | |
87f0e418 | 900 | /* Load drop-in directory data */ |
4ad49000 LP |
901 | r = unit_load_dropin(unit_follow_merge(u)); |
902 | if (r < 0) | |
87f0e418 LP |
903 | return r; |
904 | ||
23a177ef | 905 | return 0; |
87f0e418 LP |
906 | } |
907 | ||
bba34eed | 908 | int unit_add_default_target_dependency(Unit *u, Unit *target) { |
98bc2000 LP |
909 | assert(u); |
910 | assert(target); | |
911 | ||
ac155bb8 | 912 | if (target->type != UNIT_TARGET) |
98bc2000 LP |
913 | return 0; |
914 | ||
35b8ca3a | 915 | /* Only add the dependency if both units are loaded, so that |
bba34eed | 916 | * that loop check below is reliable */ |
ac155bb8 MS |
917 | if (u->load_state != UNIT_LOADED || |
918 | target->load_state != UNIT_LOADED) | |
bba34eed LP |
919 | return 0; |
920 | ||
21256a2b LP |
921 | /* If either side wants no automatic dependencies, then let's |
922 | * skip this */ | |
ac155bb8 MS |
923 | if (!u->default_dependencies || |
924 | !target->default_dependencies) | |
21256a2b LP |
925 | return 0; |
926 | ||
98bc2000 | 927 | /* Don't create loops */ |
ac155bb8 | 928 | if (set_get(target->dependencies[UNIT_BEFORE], u)) |
98bc2000 LP |
929 | return 0; |
930 | ||
931 | return unit_add_dependency(target, UNIT_AFTER, u, true); | |
932 | } | |
933 | ||
934 | static int unit_add_default_dependencies(Unit *u) { | |
a016b922 | 935 | |
21256a2b LP |
936 | static const UnitDependency deps[] = { |
937 | UNIT_REQUIRED_BY, | |
938 | UNIT_REQUIRED_BY_OVERRIDABLE, | |
939 | UNIT_WANTED_BY, | |
940 | UNIT_BOUND_BY | |
941 | }; | |
942 | ||
bba34eed | 943 | Unit *target; |
98bc2000 LP |
944 | Iterator i; |
945 | int r; | |
21256a2b | 946 | unsigned k; |
98bc2000 LP |
947 | |
948 | assert(u); | |
949 | ||
21256a2b | 950 | for (k = 0; k < ELEMENTSOF(deps); k++) |
a016b922 LP |
951 | SET_FOREACH(target, u->dependencies[deps[k]], i) { |
952 | r = unit_add_default_target_dependency(u, target); | |
953 | if (r < 0) | |
21256a2b | 954 | return r; |
a016b922 LP |
955 | } |
956 | ||
4ad49000 LP |
957 | if (u->default_dependencies && unit_get_cgroup_context(u)) { |
958 | if (UNIT_ISSET(u->slice)) | |
959 | r = unit_add_two_dependencies(u, UNIT_AFTER, UNIT_WANTS, UNIT_DEREF(u->slice), true); | |
960 | else | |
961 | r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_WANTS, SPECIAL_ROOT_SLICE, NULL, true); | |
962 | ||
a016b922 LP |
963 | if (r < 0) |
964 | return r; | |
965 | } | |
b81884e7 | 966 | |
98bc2000 LP |
967 | return 0; |
968 | } | |
969 | ||
9588bc32 LP |
970 | static int unit_add_mount_links(Unit *u) { |
971 | char **i; | |
972 | int r; | |
973 | ||
974 | assert(u); | |
975 | ||
976 | STRV_FOREACH(i, u->requires_mounts_for) { | |
977 | char prefix[strlen(*i) + 1]; | |
978 | ||
979 | PATH_FOREACH_PREFIX_MORE(prefix, *i) { | |
980 | Unit *m; | |
981 | ||
982 | r = manager_get_unit_by_path(u->manager, prefix, ".mount", &m); | |
983 | if (r < 0) | |
984 | return r; | |
985 | if (r == 0) | |
986 | continue; | |
987 | if (m == u) | |
988 | continue; | |
989 | ||
990 | if (m->load_state != UNIT_LOADED) | |
991 | continue; | |
992 | ||
993 | r = unit_add_dependency(u, UNIT_AFTER, m, true); | |
994 | if (r < 0) | |
995 | return r; | |
996 | ||
997 | if (m->fragment_path) { | |
998 | r = unit_add_dependency(u, UNIT_REQUIRES, m, true); | |
999 | if (r < 0) | |
1000 | return r; | |
1001 | } | |
1002 | } | |
1003 | } | |
1004 | ||
1005 | return 0; | |
1006 | } | |
1007 | ||
87f0e418 LP |
1008 | int unit_load(Unit *u) { |
1009 | int r; | |
1010 | ||
1011 | assert(u); | |
1012 | ||
ac155bb8 | 1013 | if (u->in_load_queue) { |
71fda00f | 1014 | LIST_REMOVE(load_queue, u->manager->load_queue, u); |
ac155bb8 | 1015 | u->in_load_queue = false; |
87f0e418 LP |
1016 | } |
1017 | ||
ac155bb8 | 1018 | if (u->type == _UNIT_TYPE_INVALID) |
e537352b LP |
1019 | return -EINVAL; |
1020 | ||
ac155bb8 | 1021 | if (u->load_state != UNIT_STUB) |
87f0e418 LP |
1022 | return 0; |
1023 | ||
c2756a68 LP |
1024 | if (UNIT_VTABLE(u)->load) { |
1025 | r = UNIT_VTABLE(u)->load(u); | |
1026 | if (r < 0) | |
87f0e418 | 1027 | goto fail; |
c2756a68 | 1028 | } |
23a177ef | 1029 | |
ac155bb8 | 1030 | if (u->load_state == UNIT_STUB) { |
23a177ef LP |
1031 | r = -ENOENT; |
1032 | goto fail; | |
1033 | } | |
1034 | ||
7c8fa05c | 1035 | if (u->load_state == UNIT_LOADED) { |
c2756a68 LP |
1036 | |
1037 | if (u->default_dependencies) { | |
1038 | r = unit_add_default_dependencies(u); | |
1039 | if (r < 0) | |
1040 | goto fail; | |
1041 | } | |
1042 | ||
6414b7c9 DS |
1043 | unit_update_member_masks(u); |
1044 | ||
7c8fa05c LP |
1045 | r = unit_add_mount_links(u); |
1046 | if (r < 0) | |
c2756a68 | 1047 | goto fail; |
7c8fa05c | 1048 | |
d420282b | 1049 | if (u->on_failure_job_mode == JOB_ISOLATE && |
c2756a68 | 1050 | set_size(u->dependencies[UNIT_ON_FAILURE]) > 1) { |
f68319bb | 1051 | |
c2756a68 | 1052 | log_error_unit(u->id, |
d420282b | 1053 | "More than one OnFailure= dependencies specified for %s but OnFailureJobMode=isolate set. Refusing.", u->id); |
f68319bb | 1054 | |
c2756a68 LP |
1055 | r = -EINVAL; |
1056 | goto fail; | |
1057 | } | |
f68319bb LP |
1058 | } |
1059 | ||
ac155bb8 | 1060 | assert((u->load_state != UNIT_MERGED) == !u->merged_into); |
23a177ef LP |
1061 | |
1062 | unit_add_to_dbus_queue(unit_follow_merge(u)); | |
701cc384 | 1063 | unit_add_to_gc_queue(u); |
87f0e418 | 1064 | |
87f0e418 LP |
1065 | return 0; |
1066 | ||
1067 | fail: | |
c2756a68 | 1068 | u->load_state = u->load_state == UNIT_STUB ? UNIT_NOT_FOUND : UNIT_ERROR; |
ac155bb8 | 1069 | u->load_error = r; |
c1e1601e | 1070 | unit_add_to_dbus_queue(u); |
9a46fc3b | 1071 | unit_add_to_gc_queue(u); |
23a177ef | 1072 | |
c1b6628d ZJS |
1073 | log_debug_unit(u->id, "Failed to load configuration for %s: %s", |
1074 | u->id, strerror(-r)); | |
23a177ef | 1075 | |
87f0e418 LP |
1076 | return r; |
1077 | } | |
1078 | ||
9588bc32 | 1079 | static bool unit_condition_test(Unit *u) { |
90bbc946 LP |
1080 | assert(u); |
1081 | ||
ac155bb8 | 1082 | dual_timestamp_get(&u->condition_timestamp); |
4b744dfa | 1083 | u->condition_result = condition_test_list(u->id, u->conditions); |
90bbc946 | 1084 | |
ac155bb8 | 1085 | return u->condition_result; |
90bbc946 LP |
1086 | } |
1087 | ||
44a6b1b6 | 1088 | _pure_ static const char* unit_get_status_message_format(Unit *u, JobType t) { |
c6918296 | 1089 | const UnitStatusMessageFormats *format_table; |
877d54e9 LP |
1090 | |
1091 | assert(u); | |
1092 | assert(t >= 0); | |
1093 | assert(t < _JOB_TYPE_MAX); | |
1094 | ||
1095 | if (t != JOB_START && t != JOB_STOP) | |
1096 | return NULL; | |
c6918296 MS |
1097 | |
1098 | format_table = &UNIT_VTABLE(u)->status_message_formats; | |
1099 | if (!format_table) | |
877d54e9 LP |
1100 | return NULL; |
1101 | ||
1102 | return format_table->starting_stopping[t == JOB_STOP]; | |
1103 | } | |
1104 | ||
44a6b1b6 | 1105 | _pure_ static const char *unit_get_status_message_format_try_harder(Unit *u, JobType t) { |
877d54e9 LP |
1106 | const char *format; |
1107 | ||
1108 | assert(u); | |
1109 | assert(t >= 0); | |
1110 | assert(t < _JOB_TYPE_MAX); | |
1111 | ||
1112 | format = unit_get_status_message_format(u, t); | |
1113 | if (format) | |
1114 | return format; | |
1115 | ||
1116 | /* Return generic strings */ | |
1117 | if (t == JOB_START) | |
1118 | return "Starting %s."; | |
1119 | else if (t == JOB_STOP) | |
1120 | return "Stopping %s."; | |
1121 | else if (t == JOB_RELOAD) | |
1122 | return "Reloading %s."; | |
1123 | ||
1124 | return NULL; | |
1125 | } | |
1126 | ||
1127 | static void unit_status_print_starting_stopping(Unit *u, JobType t) { | |
1128 | const char *format; | |
1129 | ||
1130 | assert(u); | |
1131 | ||
1132 | /* We only print status messages for selected units on | |
1133 | * selected operations. */ | |
c6918296 | 1134 | |
877d54e9 | 1135 | format = unit_get_status_message_format(u, t); |
c6918296 MS |
1136 | if (!format) |
1137 | return; | |
1138 | ||
49b1d377 | 1139 | unit_status_printf(u, "", format); |
c6918296 MS |
1140 | } |
1141 | ||
877d54e9 LP |
1142 | #pragma GCC diagnostic push |
1143 | #pragma GCC diagnostic ignored "-Wformat-nonliteral" | |
1144 | static void unit_status_log_starting_stopping_reloading(Unit *u, JobType t) { | |
1145 | const char *format; | |
1146 | char buf[LINE_MAX]; | |
1147 | sd_id128_t mid; | |
1148 | ||
1149 | assert(u); | |
1150 | ||
1151 | if (t != JOB_START && t != JOB_STOP && t != JOB_RELOAD) | |
1152 | return; | |
1153 | ||
81270860 LP |
1154 | if (log_on_console()) |
1155 | return; | |
1156 | ||
877d54e9 LP |
1157 | /* We log status messages for all units and all operations. */ |
1158 | ||
1159 | format = unit_get_status_message_format_try_harder(u, t); | |
1160 | if (!format) | |
1161 | return; | |
1162 | ||
1163 | snprintf(buf, sizeof(buf), format, unit_description(u)); | |
1164 | char_array_0(buf); | |
1165 | ||
1166 | mid = t == JOB_START ? SD_MESSAGE_UNIT_STARTING : | |
1167 | t == JOB_STOP ? SD_MESSAGE_UNIT_STOPPING : | |
1168 | SD_MESSAGE_UNIT_RELOADING; | |
1169 | ||
bbc9006e | 1170 | log_struct_unit(LOG_INFO, |
c1b6628d ZJS |
1171 | u->id, |
1172 | MESSAGE_ID(mid), | |
1173 | "MESSAGE=%s", buf, | |
1174 | NULL); | |
877d54e9 LP |
1175 | } |
1176 | #pragma GCC diagnostic pop | |
1177 | ||
87f0e418 | 1178 | /* Errors: |
d5159713 LP |
1179 | * -EBADR: This unit type does not support starting. |
1180 | * -EALREADY: Unit is already started. | |
1181 | * -EAGAIN: An operation is already in progress. Retry later. | |
1182 | * -ECANCELED: Too many requests for now. | |
87f0e418 LP |
1183 | */ |
1184 | int unit_start(Unit *u) { | |
1185 | UnitActiveState state; | |
92ab323c | 1186 | Unit *following; |
87f0e418 LP |
1187 | |
1188 | assert(u); | |
1189 | ||
ac155bb8 | 1190 | if (u->load_state != UNIT_LOADED) |
6124958c LP |
1191 | return -EINVAL; |
1192 | ||
a82e5507 LP |
1193 | /* If this is already started, then this will succeed. Note |
1194 | * that this will even succeed if this unit is not startable | |
1195 | * by the user. This is relied on to detect when we need to | |
1196 | * wait for units and when waiting is finished. */ | |
87f0e418 LP |
1197 | state = unit_active_state(u); |
1198 | if (UNIT_IS_ACTIVE_OR_RELOADING(state)) | |
1199 | return -EALREADY; | |
1200 | ||
a82e5507 LP |
1201 | /* If the conditions failed, don't do anything at all. If we |
1202 | * already are activating this call might still be useful to | |
1203 | * speed up activation in case there is some hold-off time, | |
1204 | * but we don't want to recheck the condition in that case. */ | |
1205 | if (state != UNIT_ACTIVATING && | |
1206 | !unit_condition_test(u)) { | |
c1b6628d | 1207 | log_debug_unit(u->id, "Starting of %s requested but condition failed. Ignoring.", u->id); |
52661efd LP |
1208 | return -EALREADY; |
1209 | } | |
1210 | ||
92ab323c | 1211 | /* Forward to the main object, if we aren't it. */ |
52990c2e ZJS |
1212 | following = unit_following(u); |
1213 | if (following) { | |
c1b6628d ZJS |
1214 | log_debug_unit(u->id, "Redirecting start request from %s to %s.", |
1215 | u->id, following->id); | |
92ab323c LP |
1216 | return unit_start(following); |
1217 | } | |
1218 | ||
877d54e9 LP |
1219 | unit_status_log_starting_stopping_reloading(u, JOB_START); |
1220 | unit_status_print_starting_stopping(u, JOB_START); | |
c6918296 | 1221 | |
92ab323c LP |
1222 | /* If it is stopped, but we cannot start it, then fail */ |
1223 | if (!UNIT_VTABLE(u)->start) | |
1224 | return -EBADR; | |
1225 | ||
87f0e418 LP |
1226 | /* We don't suppress calls to ->start() here when we are |
1227 | * already starting, to allow this request to be used as a | |
1228 | * "hurry up" call, for example when the unit is in some "auto | |
1229 | * restart" state where it waits for a holdoff timer to elapse | |
1230 | * before it will start again. */ | |
1231 | ||
c1e1601e | 1232 | unit_add_to_dbus_queue(u); |
9e58ff9c | 1233 | |
87f0e418 LP |
1234 | return UNIT_VTABLE(u)->start(u); |
1235 | } | |
1236 | ||
1237 | bool unit_can_start(Unit *u) { | |
1238 | assert(u); | |
1239 | ||
1240 | return !!UNIT_VTABLE(u)->start; | |
1241 | } | |
1242 | ||
2528a7a6 LP |
1243 | bool unit_can_isolate(Unit *u) { |
1244 | assert(u); | |
1245 | ||
1246 | return unit_can_start(u) && | |
ac155bb8 | 1247 | u->allow_isolate; |
2528a7a6 LP |
1248 | } |
1249 | ||
87f0e418 LP |
1250 | /* Errors: |
1251 | * -EBADR: This unit type does not support stopping. | |
1252 | * -EALREADY: Unit is already stopped. | |
1253 | * -EAGAIN: An operation is already in progress. Retry later. | |
1254 | */ | |
1255 | int unit_stop(Unit *u) { | |
1256 | UnitActiveState state; | |
92ab323c | 1257 | Unit *following; |
87f0e418 LP |
1258 | |
1259 | assert(u); | |
1260 | ||
87f0e418 | 1261 | state = unit_active_state(u); |
fdf20a31 | 1262 | if (UNIT_IS_INACTIVE_OR_FAILED(state)) |
87f0e418 LP |
1263 | return -EALREADY; |
1264 | ||
92ab323c | 1265 | if ((following = unit_following(u))) { |
c1b6628d ZJS |
1266 | log_debug_unit(u->id, "Redirecting stop request from %s to %s.", |
1267 | u->id, following->id); | |
92ab323c LP |
1268 | return unit_stop(following); |
1269 | } | |
1270 | ||
877d54e9 LP |
1271 | unit_status_log_starting_stopping_reloading(u, JOB_STOP); |
1272 | unit_status_print_starting_stopping(u, JOB_STOP); | |
c6918296 | 1273 | |
7898b0cf LP |
1274 | if (!UNIT_VTABLE(u)->stop) |
1275 | return -EBADR; | |
1276 | ||
c1e1601e | 1277 | unit_add_to_dbus_queue(u); |
9e58ff9c | 1278 | |
87f0e418 LP |
1279 | return UNIT_VTABLE(u)->stop(u); |
1280 | } | |
1281 | ||
1282 | /* Errors: | |
1283 | * -EBADR: This unit type does not support reloading. | |
1284 | * -ENOEXEC: Unit is not started. | |
1285 | * -EAGAIN: An operation is already in progress. Retry later. | |
1286 | */ | |
1287 | int unit_reload(Unit *u) { | |
1288 | UnitActiveState state; | |
92ab323c | 1289 | Unit *following; |
87f0e418 LP |
1290 | |
1291 | assert(u); | |
1292 | ||
ac155bb8 | 1293 | if (u->load_state != UNIT_LOADED) |
6124958c LP |
1294 | return -EINVAL; |
1295 | ||
87f0e418 LP |
1296 | if (!unit_can_reload(u)) |
1297 | return -EBADR; | |
1298 | ||
1299 | state = unit_active_state(u); | |
e364ad06 | 1300 | if (state == UNIT_RELOADING) |
87f0e418 LP |
1301 | return -EALREADY; |
1302 | ||
e364ad06 | 1303 | if (state != UNIT_ACTIVE) |
87f0e418 LP |
1304 | return -ENOEXEC; |
1305 | ||
e48614c4 ZJS |
1306 | following = unit_following(u); |
1307 | if (following) { | |
c1b6628d ZJS |
1308 | log_debug_unit(u->id, "Redirecting reload request from %s to %s.", |
1309 | u->id, following->id); | |
92ab323c LP |
1310 | return unit_reload(following); |
1311 | } | |
1312 | ||
877d54e9 LP |
1313 | unit_status_log_starting_stopping_reloading(u, JOB_RELOAD); |
1314 | ||
c1e1601e | 1315 | unit_add_to_dbus_queue(u); |
87f0e418 LP |
1316 | return UNIT_VTABLE(u)->reload(u); |
1317 | } | |
1318 | ||
1319 | bool unit_can_reload(Unit *u) { | |
1320 | assert(u); | |
1321 | ||
1322 | if (!UNIT_VTABLE(u)->reload) | |
1323 | return false; | |
1324 | ||
1325 | if (!UNIT_VTABLE(u)->can_reload) | |
1326 | return true; | |
1327 | ||
1328 | return UNIT_VTABLE(u)->can_reload(u); | |
1329 | } | |
1330 | ||
b4a16b7b | 1331 | static void unit_check_unneeded(Unit *u) { |
f3bff0eb LP |
1332 | Iterator i; |
1333 | Unit *other; | |
1334 | ||
1335 | assert(u); | |
1336 | ||
1337 | /* If this service shall be shut down when unneeded then do | |
1338 | * so. */ | |
1339 | ||
ac155bb8 | 1340 | if (!u->stop_when_unneeded) |
f3bff0eb LP |
1341 | return; |
1342 | ||
1343 | if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) | |
1344 | return; | |
1345 | ||
ac155bb8 | 1346 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRED_BY], i) |
31afa0a4 | 1347 | if (unit_active_or_pending(other)) |
f3bff0eb LP |
1348 | return; |
1349 | ||
ac155bb8 | 1350 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRED_BY_OVERRIDABLE], i) |
31afa0a4 | 1351 | if (unit_active_or_pending(other)) |
f3bff0eb LP |
1352 | return; |
1353 | ||
ac155bb8 | 1354 | SET_FOREACH(other, u->dependencies[UNIT_WANTED_BY], i) |
31afa0a4 | 1355 | if (unit_active_or_pending(other)) |
f3bff0eb LP |
1356 | return; |
1357 | ||
ac155bb8 | 1358 | SET_FOREACH(other, u->dependencies[UNIT_BOUND_BY], i) |
31afa0a4 | 1359 | if (unit_active_or_pending(other)) |
b81884e7 LP |
1360 | return; |
1361 | ||
c1b6628d | 1362 | log_info_unit(u->id, "Service %s is not needed anymore. Stopping.", u->id); |
f3bff0eb LP |
1363 | |
1364 | /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */ | |
ac155bb8 | 1365 | manager_add_job(u->manager, JOB_STOP, u, JOB_FAIL, true, NULL, NULL); |
f3bff0eb LP |
1366 | } |
1367 | ||
87f0e418 LP |
1368 | static void retroactively_start_dependencies(Unit *u) { |
1369 | Iterator i; | |
1370 | Unit *other; | |
1371 | ||
1372 | assert(u); | |
1373 | assert(UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))); | |
1374 | ||
ac155bb8 MS |
1375 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRES], i) |
1376 | if (!set_get(u->dependencies[UNIT_AFTER], other) && | |
b81884e7 | 1377 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
ac155bb8 | 1378 | manager_add_job(u->manager, JOB_START, other, JOB_REPLACE, true, NULL, NULL); |
b81884e7 | 1379 | |
7f2cddae | 1380 | SET_FOREACH(other, u->dependencies[UNIT_BINDS_TO], i) |
ac155bb8 | 1381 | if (!set_get(u->dependencies[UNIT_AFTER], other) && |
b81884e7 | 1382 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
ac155bb8 | 1383 | manager_add_job(u->manager, JOB_START, other, JOB_REPLACE, true, NULL, NULL); |
87f0e418 | 1384 | |
ac155bb8 MS |
1385 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRES_OVERRIDABLE], i) |
1386 | if (!set_get(u->dependencies[UNIT_AFTER], other) && | |
b81884e7 | 1387 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
ac155bb8 | 1388 | manager_add_job(u->manager, JOB_START, other, JOB_FAIL, false, NULL, NULL); |
87f0e418 | 1389 | |
ac155bb8 MS |
1390 | SET_FOREACH(other, u->dependencies[UNIT_WANTS], i) |
1391 | if (!set_get(u->dependencies[UNIT_AFTER], other) && | |
b81884e7 | 1392 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
ac155bb8 | 1393 | manager_add_job(u->manager, JOB_START, other, JOB_FAIL, false, NULL, NULL); |
87f0e418 | 1394 | |
ac155bb8 | 1395 | SET_FOREACH(other, u->dependencies[UNIT_CONFLICTS], i) |
b81884e7 | 1396 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
ac155bb8 | 1397 | manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL); |
69dd2852 | 1398 | |
ac155bb8 | 1399 | SET_FOREACH(other, u->dependencies[UNIT_CONFLICTED_BY], i) |
b81884e7 | 1400 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
ac155bb8 | 1401 | manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL); |
87f0e418 LP |
1402 | } |
1403 | ||
1404 | static void retroactively_stop_dependencies(Unit *u) { | |
1405 | Iterator i; | |
1406 | Unit *other; | |
1407 | ||
1408 | assert(u); | |
1409 | assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))); | |
1410 | ||
b81884e7 | 1411 | /* Pull down units which are bound to us recursively if enabled */ |
ac155bb8 | 1412 | SET_FOREACH(other, u->dependencies[UNIT_BOUND_BY], i) |
b81884e7 | 1413 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
ac155bb8 | 1414 | manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL); |
cd0504d0 MS |
1415 | } |
1416 | ||
1417 | static void check_unneeded_dependencies(Unit *u) { | |
1418 | Iterator i; | |
1419 | Unit *other; | |
1420 | ||
1421 | assert(u); | |
1422 | assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))); | |
f3bff0eb LP |
1423 | |
1424 | /* Garbage collect services that might not be needed anymore, if enabled */ | |
ac155bb8 | 1425 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRES], i) |
87f0e418 | 1426 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1427 | unit_check_unneeded(other); |
ac155bb8 | 1428 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRES_OVERRIDABLE], i) |
f3bff0eb | 1429 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1430 | unit_check_unneeded(other); |
ac155bb8 | 1431 | SET_FOREACH(other, u->dependencies[UNIT_WANTS], i) |
f3bff0eb | 1432 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1433 | unit_check_unneeded(other); |
ac155bb8 | 1434 | SET_FOREACH(other, u->dependencies[UNIT_REQUISITE], i) |
f3bff0eb | 1435 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1436 | unit_check_unneeded(other); |
ac155bb8 | 1437 | SET_FOREACH(other, u->dependencies[UNIT_REQUISITE_OVERRIDABLE], i) |
f3bff0eb | 1438 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1439 | unit_check_unneeded(other); |
7f2cddae | 1440 | SET_FOREACH(other, u->dependencies[UNIT_BINDS_TO], i) |
b81884e7 LP |
1441 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
1442 | unit_check_unneeded(other); | |
87f0e418 LP |
1443 | } |
1444 | ||
3ecaa09b | 1445 | void unit_start_on_failure(Unit *u) { |
c0daa706 LP |
1446 | Unit *other; |
1447 | Iterator i; | |
1448 | ||
1449 | assert(u); | |
1450 | ||
ac155bb8 | 1451 | if (set_size(u->dependencies[UNIT_ON_FAILURE]) <= 0) |
222ae6a8 LP |
1452 | return; |
1453 | ||
c1b6628d | 1454 | log_info_unit(u->id, "Triggering OnFailure= dependencies of %s.", u->id); |
222ae6a8 | 1455 | |
ac155bb8 | 1456 | SET_FOREACH(other, u->dependencies[UNIT_ON_FAILURE], i) { |
222ae6a8 LP |
1457 | int r; |
1458 | ||
d420282b | 1459 | r = manager_add_job(u->manager, JOB_START, other, u->on_failure_job_mode, true, NULL, NULL); |
c1b6628d ZJS |
1460 | if (r < 0) |
1461 | log_error_unit(u->id, "Failed to enqueue OnFailure= job: %s", strerror(-r)); | |
222ae6a8 | 1462 | } |
c0daa706 LP |
1463 | } |
1464 | ||
3ecaa09b LP |
1465 | void unit_trigger_notify(Unit *u) { |
1466 | Unit *other; | |
1467 | Iterator i; | |
1468 | ||
1469 | assert(u); | |
1470 | ||
1471 | SET_FOREACH(other, u->dependencies[UNIT_TRIGGERED_BY], i) | |
1472 | if (UNIT_VTABLE(other)->trigger_notify) | |
1473 | UNIT_VTABLE(other)->trigger_notify(other, u); | |
1474 | } | |
1475 | ||
e2f3b44c | 1476 | void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_success) { |
546ac4f0 | 1477 | Manager *m; |
7e6e7b06 | 1478 | bool unexpected; |
a096ed36 | 1479 | |
87f0e418 LP |
1480 | assert(u); |
1481 | assert(os < _UNIT_ACTIVE_STATE_MAX); | |
1482 | assert(ns < _UNIT_ACTIVE_STATE_MAX); | |
87f0e418 | 1483 | |
8e471ccd LP |
1484 | /* Note that this is called for all low-level state changes, |
1485 | * even if they might map to the same high-level | |
1486 | * UnitActiveState! That means that ns == os is OK an expected | |
c5315881 | 1487 | * behavior here. For example: if a mount point is remounted |
cd6d0a45 | 1488 | * this function will be called too! */ |
87f0e418 | 1489 | |
546ac4f0 MS |
1490 | m = u->manager; |
1491 | ||
1492 | if (m->n_reloading <= 0) { | |
bdbf9951 | 1493 | dual_timestamp ts; |
173e3821 | 1494 | |
bdbf9951 | 1495 | dual_timestamp_get(&ts); |
173e3821 | 1496 | |
bdbf9951 | 1497 | if (UNIT_IS_INACTIVE_OR_FAILED(os) && !UNIT_IS_INACTIVE_OR_FAILED(ns)) |
ac155bb8 | 1498 | u->inactive_exit_timestamp = ts; |
bdbf9951 | 1499 | else if (!UNIT_IS_INACTIVE_OR_FAILED(os) && UNIT_IS_INACTIVE_OR_FAILED(ns)) |
ac155bb8 | 1500 | u->inactive_enter_timestamp = ts; |
bdbf9951 LP |
1501 | |
1502 | if (!UNIT_IS_ACTIVE_OR_RELOADING(os) && UNIT_IS_ACTIVE_OR_RELOADING(ns)) | |
ac155bb8 | 1503 | u->active_enter_timestamp = ts; |
bdbf9951 | 1504 | else if (UNIT_IS_ACTIVE_OR_RELOADING(os) && !UNIT_IS_ACTIVE_OR_RELOADING(ns)) |
ac155bb8 | 1505 | u->active_exit_timestamp = ts; |
bdbf9951 | 1506 | } |
87f0e418 | 1507 | |
fdf20a31 | 1508 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
4ad49000 | 1509 | unit_destroy_cgroup(u); |
fb385181 | 1510 | |
9cd86184 OB |
1511 | /* Note that this doesn't apply to RemainAfterExit services exiting |
1512 | * sucessfully, since there's no change of state in that case. Which is | |
1513 | * why it is handled in service_set_state() */ | |
7ed9f6cd MS |
1514 | if (UNIT_IS_INACTIVE_OR_FAILED(os) != UNIT_IS_INACTIVE_OR_FAILED(ns)) { |
1515 | ExecContext *ec = unit_get_exec_context(u); | |
1516 | if (ec && exec_context_may_touch_console(ec)) { | |
31a7eb86 ZJS |
1517 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) { |
1518 | m->n_on_console --; | |
1519 | ||
1520 | if (m->n_on_console == 0) | |
1521 | /* unset no_console_output flag, since the console is free */ | |
2f38577f | 1522 | m->no_console_output = false; |
31a7eb86 ZJS |
1523 | } else |
1524 | m->n_on_console ++; | |
7ed9f6cd MS |
1525 | } |
1526 | } | |
1527 | ||
ac155bb8 | 1528 | if (u->job) { |
7e6e7b06 | 1529 | unexpected = false; |
87f0e418 | 1530 | |
ac155bb8 | 1531 | if (u->job->state == JOB_WAITING) |
87f0e418 LP |
1532 | |
1533 | /* So we reached a different state for this | |
1534 | * job. Let's see if we can run it now if it | |
1535 | * failed previously due to EAGAIN. */ | |
ac155bb8 | 1536 | job_add_to_run_queue(u->job); |
87f0e418 | 1537 | |
b410e6b9 | 1538 | /* Let's check whether this state change constitutes a |
35b8ca3a | 1539 | * finished job, or maybe contradicts a running job and |
b410e6b9 | 1540 | * hence needs to invalidate jobs. */ |
87f0e418 | 1541 | |
ac155bb8 | 1542 | switch (u->job->type) { |
87f0e418 | 1543 | |
b410e6b9 LP |
1544 | case JOB_START: |
1545 | case JOB_VERIFY_ACTIVE: | |
87f0e418 | 1546 | |
b410e6b9 | 1547 | if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) |
5273510e | 1548 | job_finish_and_invalidate(u->job, JOB_DONE, true); |
ac155bb8 | 1549 | else if (u->job->state == JOB_RUNNING && ns != UNIT_ACTIVATING) { |
b410e6b9 | 1550 | unexpected = true; |
41b02ec7 | 1551 | |
fdf20a31 | 1552 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
5273510e | 1553 | job_finish_and_invalidate(u->job, ns == UNIT_FAILED ? JOB_FAILED : JOB_DONE, true); |
b410e6b9 | 1554 | } |
87f0e418 | 1555 | |
b410e6b9 | 1556 | break; |
87f0e418 | 1557 | |
b410e6b9 LP |
1558 | case JOB_RELOAD: |
1559 | case JOB_RELOAD_OR_START: | |
87f0e418 | 1560 | |
ac155bb8 | 1561 | if (u->job->state == JOB_RUNNING) { |
a096ed36 | 1562 | if (ns == UNIT_ACTIVE) |
5273510e | 1563 | job_finish_and_invalidate(u->job, reload_success ? JOB_DONE : JOB_FAILED, true); |
032ff4af | 1564 | else if (ns != UNIT_ACTIVATING && ns != UNIT_RELOADING) { |
a096ed36 | 1565 | unexpected = true; |
41b02ec7 | 1566 | |
fdf20a31 | 1567 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
5273510e | 1568 | job_finish_and_invalidate(u->job, ns == UNIT_FAILED ? JOB_FAILED : JOB_DONE, true); |
a096ed36 | 1569 | } |
b410e6b9 | 1570 | } |
87f0e418 | 1571 | |
b410e6b9 | 1572 | break; |
87f0e418 | 1573 | |
b410e6b9 LP |
1574 | case JOB_STOP: |
1575 | case JOB_RESTART: | |
1576 | case JOB_TRY_RESTART: | |
87f0e418 | 1577 | |
fdf20a31 | 1578 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
5273510e | 1579 | job_finish_and_invalidate(u->job, JOB_DONE, true); |
ac155bb8 | 1580 | else if (u->job->state == JOB_RUNNING && ns != UNIT_DEACTIVATING) { |
b410e6b9 | 1581 | unexpected = true; |
5273510e | 1582 | job_finish_and_invalidate(u->job, JOB_FAILED, true); |
b410e6b9 | 1583 | } |
87f0e418 | 1584 | |
b410e6b9 | 1585 | break; |
87f0e418 | 1586 | |
b410e6b9 LP |
1587 | default: |
1588 | assert_not_reached("Job type unknown"); | |
87f0e418 | 1589 | } |
87f0e418 | 1590 | |
7e6e7b06 LP |
1591 | } else |
1592 | unexpected = true; | |
1593 | ||
546ac4f0 | 1594 | if (m->n_reloading <= 0) { |
f3bff0eb | 1595 | |
bdbf9951 LP |
1596 | /* If this state change happened without being |
1597 | * requested by a job, then let's retroactively start | |
1598 | * or stop dependencies. We skip that step when | |
1599 | * deserializing, since we don't want to create any | |
1600 | * additional jobs just because something is already | |
1601 | * activated. */ | |
1602 | ||
1603 | if (unexpected) { | |
1604 | if (UNIT_IS_INACTIVE_OR_FAILED(os) && UNIT_IS_ACTIVE_OR_ACTIVATING(ns)) | |
1605 | retroactively_start_dependencies(u); | |
1606 | else if (UNIT_IS_ACTIVE_OR_ACTIVATING(os) && UNIT_IS_INACTIVE_OR_DEACTIVATING(ns)) | |
1607 | retroactively_stop_dependencies(u); | |
1608 | } | |
5de9682c | 1609 | |
cd0504d0 MS |
1610 | /* stop unneeded units regardless if going down was expected or not */ |
1611 | if (UNIT_IS_ACTIVE_OR_ACTIVATING(os) && UNIT_IS_INACTIVE_OR_DEACTIVATING(ns)) | |
1612 | check_unneeded_dependencies(u); | |
1613 | ||
bdbf9951 | 1614 | if (ns != os && ns == UNIT_FAILED) { |
c1b6628d | 1615 | log_notice_unit(u->id, |
fcf8c440 | 1616 | "Unit %s entered failed state.", u->id); |
3ecaa09b | 1617 | unit_start_on_failure(u); |
cd6d0a45 | 1618 | } |
3b2775c5 | 1619 | } |
e537352b | 1620 | |
3b2775c5 LP |
1621 | /* Some names are special */ |
1622 | if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) { | |
1623 | ||
1624 | if (unit_has_name(u, SPECIAL_DBUS_SERVICE)) | |
1625 | /* The bus just might have become available, | |
1626 | * hence try to connect to it, if we aren't | |
1627 | * yet connected. */ | |
546ac4f0 | 1628 | bus_init(m, true); |
3b2775c5 | 1629 | |
ac155bb8 | 1630 | if (u->type == UNIT_SERVICE && |
3b2775c5 | 1631 | !UNIT_IS_ACTIVE_OR_RELOADING(os) && |
546ac4f0 | 1632 | m->n_reloading <= 0) { |
3b2775c5 | 1633 | /* Write audit record if we have just finished starting up */ |
546ac4f0 | 1634 | manager_send_unit_audit(m, u, AUDIT_SERVICE_START, true); |
ac155bb8 | 1635 | u->in_audit = true; |
3b2775c5 | 1636 | } |
e983b760 | 1637 | |
3b2775c5 | 1638 | if (!UNIT_IS_ACTIVE_OR_RELOADING(os)) |
546ac4f0 | 1639 | manager_send_unit_plymouth(m, u); |
bdbf9951 | 1640 | |
3b2775c5 | 1641 | } else { |
bdbf9951 | 1642 | |
3b2775c5 LP |
1643 | /* We don't care about D-Bus here, since we'll get an |
1644 | * asynchronous notification for it anyway. */ | |
cd6d0a45 | 1645 | |
ac155bb8 | 1646 | if (u->type == UNIT_SERVICE && |
3b2775c5 LP |
1647 | UNIT_IS_INACTIVE_OR_FAILED(ns) && |
1648 | !UNIT_IS_INACTIVE_OR_FAILED(os) && | |
546ac4f0 | 1649 | m->n_reloading <= 0) { |
4927fcae | 1650 | |
3b2775c5 LP |
1651 | /* Hmm, if there was no start record written |
1652 | * write it now, so that we always have a nice | |
1653 | * pair */ | |
ac155bb8 | 1654 | if (!u->in_audit) { |
546ac4f0 | 1655 | manager_send_unit_audit(m, u, AUDIT_SERVICE_START, ns == UNIT_INACTIVE); |
cd6d0a45 | 1656 | |
3b2775c5 | 1657 | if (ns == UNIT_INACTIVE) |
546ac4f0 | 1658 | manager_send_unit_audit(m, u, AUDIT_SERVICE_STOP, true); |
3b2775c5 LP |
1659 | } else |
1660 | /* Write audit record if we have just finished shutting down */ | |
546ac4f0 | 1661 | manager_send_unit_audit(m, u, AUDIT_SERVICE_STOP, ns == UNIT_INACTIVE); |
bdbf9951 | 1662 | |
ac155bb8 | 1663 | u->in_audit = false; |
cd6d0a45 | 1664 | } |
f278026d LP |
1665 | } |
1666 | ||
546ac4f0 | 1667 | manager_recheck_journal(m); |
3ecaa09b | 1668 | unit_trigger_notify(u); |
3b2775c5 | 1669 | |
f3bff0eb LP |
1670 | /* Maybe we finished startup and are now ready for being |
1671 | * stopped because unneeded? */ | |
bf6dcfa6 OS |
1672 | if (u->manager->n_reloading <= 0) |
1673 | unit_check_unneeded(u); | |
c1e1601e LP |
1674 | |
1675 | unit_add_to_dbus_queue(u); | |
701cc384 | 1676 | unit_add_to_gc_queue(u); |
87f0e418 LP |
1677 | } |
1678 | ||
87f0e418 LP |
1679 | int unit_watch_pid(Unit *u, pid_t pid) { |
1680 | assert(u); | |
1681 | assert(pid >= 1); | |
1682 | ||
05e343b7 LP |
1683 | /* Watch a specific PID. We only support one unit watching |
1684 | * each PID for now. */ | |
1685 | ||
ac155bb8 | 1686 | return hashmap_put(u->manager->watch_pids, LONG_TO_PTR(pid), u); |
87f0e418 LP |
1687 | } |
1688 | ||
1689 | void unit_unwatch_pid(Unit *u, pid_t pid) { | |
1690 | assert(u); | |
1691 | assert(pid >= 1); | |
1692 | ||
ac155bb8 | 1693 | hashmap_remove_value(u->manager->watch_pids, LONG_TO_PTR(pid), u); |
87f0e418 LP |
1694 | } |
1695 | ||
87f0e418 LP |
1696 | bool unit_job_is_applicable(Unit *u, JobType j) { |
1697 | assert(u); | |
1698 | assert(j >= 0 && j < _JOB_TYPE_MAX); | |
1699 | ||
1700 | switch (j) { | |
1701 | ||
1702 | case JOB_VERIFY_ACTIVE: | |
1703 | case JOB_START: | |
57339f47 | 1704 | case JOB_STOP: |
e0209d83 | 1705 | case JOB_NOP: |
87f0e418 LP |
1706 | return true; |
1707 | ||
87f0e418 LP |
1708 | case JOB_RESTART: |
1709 | case JOB_TRY_RESTART: | |
1710 | return unit_can_start(u); | |
1711 | ||
1712 | case JOB_RELOAD: | |
1713 | return unit_can_reload(u); | |
1714 | ||
1715 | case JOB_RELOAD_OR_START: | |
1716 | return unit_can_reload(u) && unit_can_start(u); | |
1717 | ||
1718 | default: | |
1719 | assert_not_reached("Invalid job type"); | |
1720 | } | |
1721 | } | |
1722 | ||
701cc384 | 1723 | int unit_add_dependency(Unit *u, UnitDependency d, Unit *other, bool add_reference) { |
87f0e418 LP |
1724 | |
1725 | static const UnitDependency inverse_table[_UNIT_DEPENDENCY_MAX] = { | |
1726 | [UNIT_REQUIRES] = UNIT_REQUIRED_BY, | |
9e2f7c11 | 1727 | [UNIT_REQUIRES_OVERRIDABLE] = UNIT_REQUIRED_BY_OVERRIDABLE, |
87f0e418 LP |
1728 | [UNIT_WANTS] = UNIT_WANTED_BY, |
1729 | [UNIT_REQUISITE] = UNIT_REQUIRED_BY, | |
9e2f7c11 | 1730 | [UNIT_REQUISITE_OVERRIDABLE] = UNIT_REQUIRED_BY_OVERRIDABLE, |
7f2cddae | 1731 | [UNIT_BINDS_TO] = UNIT_BOUND_BY, |
60649f17 | 1732 | [UNIT_PART_OF] = UNIT_CONSISTS_OF, |
87f0e418 | 1733 | [UNIT_REQUIRED_BY] = _UNIT_DEPENDENCY_INVALID, |
9e2f7c11 | 1734 | [UNIT_REQUIRED_BY_OVERRIDABLE] = _UNIT_DEPENDENCY_INVALID, |
87f0e418 | 1735 | [UNIT_WANTED_BY] = _UNIT_DEPENDENCY_INVALID, |
7f2cddae | 1736 | [UNIT_BOUND_BY] = UNIT_BINDS_TO, |
60649f17 | 1737 | [UNIT_CONSISTS_OF] = UNIT_PART_OF, |
69dd2852 LP |
1738 | [UNIT_CONFLICTS] = UNIT_CONFLICTED_BY, |
1739 | [UNIT_CONFLICTED_BY] = UNIT_CONFLICTS, | |
87f0e418 | 1740 | [UNIT_BEFORE] = UNIT_AFTER, |
701cc384 | 1741 | [UNIT_AFTER] = UNIT_BEFORE, |
5de9682c | 1742 | [UNIT_ON_FAILURE] = _UNIT_DEPENDENCY_INVALID, |
701cc384 | 1743 | [UNIT_REFERENCES] = UNIT_REFERENCED_BY, |
57020a3a LP |
1744 | [UNIT_REFERENCED_BY] = UNIT_REFERENCES, |
1745 | [UNIT_TRIGGERS] = UNIT_TRIGGERED_BY, | |
4dcc1cb4 | 1746 | [UNIT_TRIGGERED_BY] = UNIT_TRIGGERS, |
7f2cddae | 1747 | [UNIT_PROPAGATES_RELOAD_TO] = UNIT_RELOAD_PROPAGATED_FROM, |
85e9a101 | 1748 | [UNIT_RELOAD_PROPAGATED_FROM] = UNIT_PROPAGATES_RELOAD_TO, |
613b411c | 1749 | [UNIT_JOINS_NAMESPACE_OF] = UNIT_JOINS_NAMESPACE_OF, |
87f0e418 | 1750 | }; |
701cc384 | 1751 | int r, q = 0, v = 0, w = 0; |
87f0e418 LP |
1752 | |
1753 | assert(u); | |
1754 | assert(d >= 0 && d < _UNIT_DEPENDENCY_MAX); | |
87f0e418 LP |
1755 | assert(other); |
1756 | ||
9f151f29 LP |
1757 | u = unit_follow_merge(u); |
1758 | other = unit_follow_merge(other); | |
1759 | ||
87f0e418 LP |
1760 | /* We won't allow dependencies on ourselves. We will not |
1761 | * consider them an error however. */ | |
1762 | if (u == other) | |
1763 | return 0; | |
1764 | ||
613b411c LP |
1765 | r = set_ensure_allocated(&u->dependencies[d], trivial_hash_func, trivial_compare_func); |
1766 | if (r < 0) | |
87f0e418 LP |
1767 | return r; |
1768 | ||
613b411c LP |
1769 | if (inverse_table[d] != _UNIT_DEPENDENCY_INVALID) { |
1770 | r = set_ensure_allocated(&other->dependencies[inverse_table[d]], trivial_hash_func, trivial_compare_func); | |
1771 | if (r < 0) | |
1772 | return r; | |
1773 | } | |
1774 | ||
1775 | if (add_reference) { | |
1776 | r = set_ensure_allocated(&u->dependencies[UNIT_REFERENCES], trivial_hash_func, trivial_compare_func); | |
1777 | if (r < 0) | |
5de9682c LP |
1778 | return r; |
1779 | ||
613b411c LP |
1780 | r = set_ensure_allocated(&other->dependencies[UNIT_REFERENCED_BY], trivial_hash_func, trivial_compare_func); |
1781 | if (r < 0) | |
701cc384 | 1782 | return r; |
613b411c | 1783 | } |
87f0e418 | 1784 | |
613b411c LP |
1785 | q = set_put(u->dependencies[d], other); |
1786 | if (q < 0) | |
701cc384 | 1787 | return q; |
87f0e418 | 1788 | |
613b411c LP |
1789 | if (inverse_table[d] != _UNIT_DEPENDENCY_INVALID && inverse_table[d] != d) { |
1790 | v = set_put(other->dependencies[inverse_table[d]], u); | |
1791 | if (v < 0) { | |
5de9682c LP |
1792 | r = v; |
1793 | goto fail; | |
1794 | } | |
613b411c | 1795 | } |
701cc384 LP |
1796 | |
1797 | if (add_reference) { | |
613b411c LP |
1798 | w = set_put(u->dependencies[UNIT_REFERENCES], other); |
1799 | if (w < 0) { | |
701cc384 LP |
1800 | r = w; |
1801 | goto fail; | |
1802 | } | |
1803 | ||
613b411c LP |
1804 | r = set_put(other->dependencies[UNIT_REFERENCED_BY], u); |
1805 | if (r < 0) | |
701cc384 | 1806 | goto fail; |
87f0e418 LP |
1807 | } |
1808 | ||
c1e1601e | 1809 | unit_add_to_dbus_queue(u); |
87f0e418 | 1810 | return 0; |
701cc384 LP |
1811 | |
1812 | fail: | |
1813 | if (q > 0) | |
ac155bb8 | 1814 | set_remove(u->dependencies[d], other); |
701cc384 LP |
1815 | |
1816 | if (v > 0) | |
ac155bb8 | 1817 | set_remove(other->dependencies[inverse_table[d]], u); |
701cc384 LP |
1818 | |
1819 | if (w > 0) | |
ac155bb8 | 1820 | set_remove(u->dependencies[UNIT_REFERENCES], other); |
701cc384 LP |
1821 | |
1822 | return r; | |
87f0e418 | 1823 | } |
0301abf4 | 1824 | |
2c966c03 LP |
1825 | int unit_add_two_dependencies(Unit *u, UnitDependency d, UnitDependency e, Unit *other, bool add_reference) { |
1826 | int r; | |
1827 | ||
1828 | assert(u); | |
1829 | ||
1830 | if ((r = unit_add_dependency(u, d, other, add_reference)) < 0) | |
1831 | return r; | |
1832 | ||
1833 | if ((r = unit_add_dependency(u, e, other, add_reference)) < 0) | |
1834 | return r; | |
1835 | ||
1836 | return 0; | |
1837 | } | |
1838 | ||
9e2f7c11 LP |
1839 | static const char *resolve_template(Unit *u, const char *name, const char*path, char **p) { |
1840 | char *s; | |
1841 | ||
1842 | assert(u); | |
1843 | assert(name || path); | |
8afbb8e1 | 1844 | assert(p); |
9e2f7c11 LP |
1845 | |
1846 | if (!name) | |
9eb977db | 1847 | name = path_get_file_name(path); |
9e2f7c11 LP |
1848 | |
1849 | if (!unit_name_is_template(name)) { | |
1850 | *p = NULL; | |
1851 | return name; | |
1852 | } | |
1853 | ||
ac155bb8 MS |
1854 | if (u->instance) |
1855 | s = unit_name_replace_instance(name, u->instance); | |
9e2f7c11 | 1856 | else { |
ae018d9b | 1857 | _cleanup_free_ char *i = NULL; |
9e2f7c11 | 1858 | |
8afbb8e1 LP |
1859 | i = unit_name_to_prefix(u->id); |
1860 | if (!i) | |
9e2f7c11 LP |
1861 | return NULL; |
1862 | ||
1863 | s = unit_name_replace_instance(name, i); | |
9e2f7c11 LP |
1864 | } |
1865 | ||
1866 | if (!s) | |
1867 | return NULL; | |
1868 | ||
1869 | *p = s; | |
1870 | return s; | |
1871 | } | |
1872 | ||
701cc384 | 1873 | int unit_add_dependency_by_name(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) { |
09b6b09f LP |
1874 | Unit *other; |
1875 | int r; | |
8afbb8e1 | 1876 | _cleanup_free_ char *s = NULL; |
09b6b09f | 1877 | |
9e2f7c11 LP |
1878 | assert(u); |
1879 | assert(name || path); | |
09b6b09f | 1880 | |
8afbb8e1 LP |
1881 | name = resolve_template(u, name, path, &s); |
1882 | if (!name) | |
9e2f7c11 | 1883 | return -ENOMEM; |
09b6b09f | 1884 | |
8afbb8e1 LP |
1885 | r = manager_load_unit(u->manager, name, path, NULL, &other); |
1886 | if (r < 0) | |
1887 | return r; | |
9e2f7c11 | 1888 | |
8afbb8e1 | 1889 | return unit_add_dependency(u, d, other, add_reference); |
09b6b09f LP |
1890 | } |
1891 | ||
2c966c03 LP |
1892 | int unit_add_two_dependencies_by_name(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference) { |
1893 | Unit *other; | |
1894 | int r; | |
68eda4bd | 1895 | _cleanup_free_ char *s = NULL; |
2c966c03 LP |
1896 | |
1897 | assert(u); | |
1898 | assert(name || path); | |
1899 | ||
1900 | if (!(name = resolve_template(u, name, path, &s))) | |
1901 | return -ENOMEM; | |
1902 | ||
ac155bb8 | 1903 | if ((r = manager_load_unit(u->manager, name, path, NULL, &other)) < 0) |
68eda4bd | 1904 | return r; |
2c966c03 LP |
1905 | |
1906 | r = unit_add_two_dependencies(u, d, e, other, add_reference); | |
1907 | ||
2c966c03 LP |
1908 | return r; |
1909 | } | |
1910 | ||
701cc384 | 1911 | int unit_add_dependency_by_name_inverse(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) { |
bd77d0fc LP |
1912 | Unit *other; |
1913 | int r; | |
68eda4bd | 1914 | _cleanup_free_ char *s = NULL; |
bd77d0fc | 1915 | |
9e2f7c11 LP |
1916 | assert(u); |
1917 | assert(name || path); | |
bd77d0fc | 1918 | |
9e2f7c11 LP |
1919 | if (!(name = resolve_template(u, name, path, &s))) |
1920 | return -ENOMEM; | |
bd77d0fc | 1921 | |
ac155bb8 | 1922 | if ((r = manager_load_unit(u->manager, name, path, NULL, &other)) < 0) |
68eda4bd | 1923 | return r; |
9e2f7c11 | 1924 | |
701cc384 | 1925 | r = unit_add_dependency(other, d, u, add_reference); |
9e2f7c11 | 1926 | |
9e2f7c11 | 1927 | return r; |
bd77d0fc LP |
1928 | } |
1929 | ||
2c966c03 LP |
1930 | int unit_add_two_dependencies_by_name_inverse(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference) { |
1931 | Unit *other; | |
1932 | int r; | |
68eda4bd | 1933 | _cleanup_free_ char *s = NULL; |
2c966c03 LP |
1934 | |
1935 | assert(u); | |
1936 | assert(name || path); | |
1937 | ||
1938 | if (!(name = resolve_template(u, name, path, &s))) | |
1939 | return -ENOMEM; | |
1940 | ||
ac155bb8 | 1941 | if ((r = manager_load_unit(u->manager, name, path, NULL, &other)) < 0) |
68eda4bd | 1942 | return r; |
2c966c03 LP |
1943 | |
1944 | if ((r = unit_add_two_dependencies(other, d, e, u, add_reference)) < 0) | |
68eda4bd | 1945 | return r; |
2c966c03 | 1946 | |
2c966c03 LP |
1947 | return r; |
1948 | } | |
1949 | ||
0301abf4 | 1950 | int set_unit_path(const char *p) { |
26d04f86 | 1951 | _cleanup_free_ char *c = NULL; |
0301abf4 LP |
1952 | |
1953 | /* This is mostly for debug purposes */ | |
26d04f86 LP |
1954 | c = path_make_absolute_cwd(p); |
1955 | if (setenv("SYSTEMD_UNIT_PATH", c, 0) < 0) | |
1956 | return -errno; | |
0301abf4 LP |
1957 | |
1958 | return 0; | |
1959 | } | |
88066b3a | 1960 | |
ea430986 | 1961 | char *unit_dbus_path(Unit *u) { |
ea430986 LP |
1962 | assert(u); |
1963 | ||
ac155bb8 | 1964 | if (!u->id) |
04ade7d2 LP |
1965 | return NULL; |
1966 | ||
48899192 | 1967 | return unit_dbus_path_from_name(u->id); |
ea430986 LP |
1968 | } |
1969 | ||
41f9172f | 1970 | char *unit_default_cgroup_path(Unit *u) { |
d7bd3de0 | 1971 | _cleanup_free_ char *escaped = NULL, *slice = NULL; |
a016b922 | 1972 | int r; |
5954c074 | 1973 | |
013b87c0 LP |
1974 | assert(u); |
1975 | ||
4ad49000 LP |
1976 | if (unit_has_name(u, SPECIAL_ROOT_SLICE)) |
1977 | return strdup(u->manager->cgroup_root); | |
1978 | ||
1979 | if (UNIT_ISSET(u->slice) && !unit_has_name(UNIT_DEREF(u->slice), SPECIAL_ROOT_SLICE)) { | |
a016b922 LP |
1980 | r = cg_slice_to_path(UNIT_DEREF(u->slice)->id, &slice); |
1981 | if (r < 0) | |
1982 | return NULL; | |
1983 | } | |
1984 | ||
d7bd3de0 LP |
1985 | escaped = cg_escape(u->id); |
1986 | if (!escaped) | |
5954c074 LP |
1987 | return NULL; |
1988 | ||
d7bd3de0 LP |
1989 | if (slice) |
1990 | return strjoin(u->manager->cgroup_root, "/", slice, "/", escaped, NULL); | |
1991 | else | |
1992 | return strjoin(u->manager->cgroup_root, "/", escaped, NULL); | |
013b87c0 LP |
1993 | } |
1994 | ||
a016b922 | 1995 | int unit_add_default_slice(Unit *u) { |
a8833944 LP |
1996 | _cleanup_free_ char *b = NULL; |
1997 | const char *slice_name; | |
a016b922 LP |
1998 | Unit *slice; |
1999 | int r; | |
2000 | ||
2001 | assert(u); | |
2002 | ||
9444b1f2 | 2003 | if (UNIT_ISSET(u->slice)) |
a016b922 LP |
2004 | return 0; |
2005 | ||
4ad49000 | 2006 | if (!unit_get_cgroup_context(u)) |
a016b922 LP |
2007 | return 0; |
2008 | ||
a8833944 LP |
2009 | if (u->instance) { |
2010 | _cleanup_free_ char *prefix = NULL, *escaped = NULL; | |
68eda4bd | 2011 | |
a8833944 LP |
2012 | /* Implicitly place all instantiated units in their |
2013 | * own per-template slice */ | |
2014 | ||
2015 | prefix = unit_name_to_prefix(u->id); | |
2016 | if (!prefix) | |
2017 | return -ENOMEM; | |
2018 | ||
2019 | /* The prefix is already escaped, but it might include | |
2020 | * "-" which has a special meaning for slice units, | |
2021 | * hence escape it here extra. */ | |
2022 | escaped = strreplace(prefix, "-", "\\x2d"); | |
2023 | if (!escaped) | |
2024 | return -ENOMEM; | |
2025 | ||
2026 | if (u->manager->running_as == SYSTEMD_SYSTEM) | |
2027 | b = strjoin("system-", escaped, ".slice", NULL); | |
2028 | else | |
2029 | b = strappend(escaped, ".slice"); | |
2030 | if (!b) | |
2031 | return -ENOMEM; | |
2032 | ||
2033 | slice_name = b; | |
2034 | } else | |
2035 | slice_name = | |
2036 | u->manager->running_as == SYSTEMD_SYSTEM | |
2037 | ? SPECIAL_SYSTEM_SLICE | |
2038 | : SPECIAL_ROOT_SLICE; | |
2039 | ||
2040 | r = manager_load_unit(u->manager, slice_name, NULL, NULL, &slice); | |
a016b922 LP |
2041 | if (r < 0) |
2042 | return r; | |
2043 | ||
2044 | unit_ref_set(&u->slice, slice); | |
2045 | return 0; | |
2046 | } | |
2047 | ||
9444b1f2 LP |
2048 | const char *unit_slice_name(Unit *u) { |
2049 | assert(u); | |
2050 | ||
2051 | if (!UNIT_ISSET(u->slice)) | |
2052 | return NULL; | |
2053 | ||
2054 | return UNIT_DEREF(u->slice)->id; | |
2055 | } | |
2056 | ||
f6ff8c29 | 2057 | int unit_load_related_unit(Unit *u, const char *type, Unit **_found) { |
78edb35a | 2058 | _cleanup_free_ char *t = NULL; |
f6ff8c29 LP |
2059 | int r; |
2060 | ||
2061 | assert(u); | |
2062 | assert(type); | |
2063 | assert(_found); | |
2064 | ||
78edb35a LP |
2065 | t = unit_name_change_suffix(u->id, type); |
2066 | if (!t) | |
f6ff8c29 LP |
2067 | return -ENOMEM; |
2068 | ||
2069 | assert(!unit_has_name(u, t)); | |
2070 | ||
ac155bb8 | 2071 | r = manager_load_unit(u->manager, t, NULL, NULL, _found); |
9e2f7c11 | 2072 | assert(r < 0 || *_found != u); |
f6ff8c29 LP |
2073 | return r; |
2074 | } | |
2075 | ||
05e343b7 LP |
2076 | int unit_watch_bus_name(Unit *u, const char *name) { |
2077 | assert(u); | |
2078 | assert(name); | |
2079 | ||
2080 | /* Watch a specific name on the bus. We only support one unit | |
2081 | * watching each name for now. */ | |
2082 | ||
ac155bb8 | 2083 | return hashmap_put(u->manager->watch_bus, name, u); |
05e343b7 LP |
2084 | } |
2085 | ||
2086 | void unit_unwatch_bus_name(Unit *u, const char *name) { | |
2087 | assert(u); | |
2088 | assert(name); | |
2089 | ||
ac155bb8 | 2090 | hashmap_remove_value(u->manager->watch_bus, name, u); |
05e343b7 LP |
2091 | } |
2092 | ||
a16e1123 LP |
2093 | bool unit_can_serialize(Unit *u) { |
2094 | assert(u); | |
2095 | ||
2096 | return UNIT_VTABLE(u)->serialize && UNIT_VTABLE(u)->deserialize_item; | |
2097 | } | |
2098 | ||
6b78f9b4 | 2099 | int unit_serialize(Unit *u, FILE *f, FDSet *fds, bool serialize_jobs) { |
613b411c | 2100 | ExecRuntime *rt; |
a16e1123 LP |
2101 | int r; |
2102 | ||
2103 | assert(u); | |
2104 | assert(f); | |
2105 | assert(fds); | |
2106 | ||
2107 | if (!unit_can_serialize(u)) | |
2108 | return 0; | |
2109 | ||
6fa48533 LP |
2110 | r = UNIT_VTABLE(u)->serialize(u, f, fds); |
2111 | if (r < 0) | |
a16e1123 LP |
2112 | return r; |
2113 | ||
613b411c LP |
2114 | rt = unit_get_exec_runtime(u); |
2115 | if (rt) { | |
2116 | r = exec_runtime_serialize(rt, u, f, fds); | |
2117 | if (r < 0) | |
2118 | return r; | |
e0209d83 MS |
2119 | } |
2120 | ||
ac155bb8 MS |
2121 | dual_timestamp_serialize(f, "inactive-exit-timestamp", &u->inactive_exit_timestamp); |
2122 | dual_timestamp_serialize(f, "active-enter-timestamp", &u->active_enter_timestamp); | |
2123 | dual_timestamp_serialize(f, "active-exit-timestamp", &u->active_exit_timestamp); | |
2124 | dual_timestamp_serialize(f, "inactive-enter-timestamp", &u->inactive_enter_timestamp); | |
2125 | dual_timestamp_serialize(f, "condition-timestamp", &u->condition_timestamp); | |
2791a8f8 | 2126 | |
ac155bb8 MS |
2127 | if (dual_timestamp_is_set(&u->condition_timestamp)) |
2128 | unit_serialize_item(u, f, "condition-result", yes_no(u->condition_result)); | |
10717a1a | 2129 | |
c2756a68 LP |
2130 | unit_serialize_item(u, f, "transient", yes_no(u->transient)); |
2131 | ||
2132 | if (u->cgroup_path) | |
2133 | unit_serialize_item(u, f, "cgroup", u->cgroup_path); | |
2134 | ||
613b411c LP |
2135 | if (serialize_jobs) { |
2136 | if (u->job) { | |
2137 | fprintf(f, "job\n"); | |
2138 | job_serialize(u->job, f, fds); | |
2139 | } | |
2140 | ||
2141 | if (u->nop_job) { | |
2142 | fprintf(f, "job\n"); | |
2143 | job_serialize(u->nop_job, f, fds); | |
2144 | } | |
2145 | } | |
2146 | ||
a16e1123 LP |
2147 | /* End marker */ |
2148 | fputc('\n', f); | |
2149 | return 0; | |
2150 | } | |
2151 | ||
2152 | void unit_serialize_item_format(Unit *u, FILE *f, const char *key, const char *format, ...) { | |
2153 | va_list ap; | |
2154 | ||
2155 | assert(u); | |
2156 | assert(f); | |
2157 | assert(key); | |
2158 | assert(format); | |
2159 | ||
2160 | fputs(key, f); | |
2161 | fputc('=', f); | |
2162 | ||
2163 | va_start(ap, format); | |
2164 | vfprintf(f, format, ap); | |
2165 | va_end(ap); | |
2166 | ||
2167 | fputc('\n', f); | |
2168 | } | |
2169 | ||
2170 | void unit_serialize_item(Unit *u, FILE *f, const char *key, const char *value) { | |
2171 | assert(u); | |
2172 | assert(f); | |
2173 | assert(key); | |
2174 | assert(value); | |
2175 | ||
2176 | fprintf(f, "%s=%s\n", key, value); | |
2177 | } | |
2178 | ||
2179 | int unit_deserialize(Unit *u, FILE *f, FDSet *fds) { | |
613b411c LP |
2180 | size_t offset; |
2181 | ExecRuntime **rt; | |
a16e1123 LP |
2182 | int r; |
2183 | ||
2184 | assert(u); | |
2185 | assert(f); | |
2186 | assert(fds); | |
2187 | ||
2188 | if (!unit_can_serialize(u)) | |
2189 | return 0; | |
2190 | ||
613b411c LP |
2191 | offset = UNIT_VTABLE(u)->exec_runtime_offset; |
2192 | if (offset > 0) | |
2193 | rt = (ExecRuntime**) ((uint8_t*) u + offset); | |
2194 | ||
a16e1123 | 2195 | for (;;) { |
20c03b7b | 2196 | char line[LINE_MAX], *l, *v; |
a16e1123 LP |
2197 | size_t k; |
2198 | ||
2199 | if (!fgets(line, sizeof(line), f)) { | |
2200 | if (feof(f)) | |
2201 | return 0; | |
2202 | return -errno; | |
2203 | } | |
2204 | ||
10f8e83c | 2205 | char_array_0(line); |
a16e1123 LP |
2206 | l = strstrip(line); |
2207 | ||
2208 | /* End marker */ | |
2209 | if (l[0] == 0) | |
2210 | return 0; | |
2211 | ||
2212 | k = strcspn(l, "="); | |
2213 | ||
2214 | if (l[k] == '=') { | |
2215 | l[k] = 0; | |
2216 | v = l+k+1; | |
2217 | } else | |
2218 | v = l+k; | |
2219 | ||
cca098b0 | 2220 | if (streq(l, "job")) { |
39a18c60 MS |
2221 | if (v[0] == '\0') { |
2222 | /* new-style serialized job */ | |
2223 | Job *j = job_new_raw(u); | |
2224 | if (!j) | |
2225 | return -ENOMEM; | |
2226 | ||
2227 | r = job_deserialize(j, f, fds); | |
2228 | if (r < 0) { | |
2229 | job_free(j); | |
2230 | return r; | |
2231 | } | |
cca098b0 | 2232 | |
39a18c60 MS |
2233 | r = hashmap_put(u->manager->jobs, UINT32_TO_PTR(j->id), j); |
2234 | if (r < 0) { | |
2235 | job_free(j); | |
2236 | return r; | |
2237 | } | |
e0209d83 MS |
2238 | |
2239 | r = job_install_deserialized(j); | |
2240 | if (r < 0) { | |
2241 | hashmap_remove(u->manager->jobs, UINT32_TO_PTR(j->id)); | |
2242 | job_free(j); | |
2243 | return r; | |
2244 | } | |
6b19ad24 MS |
2245 | |
2246 | if (j->state == JOB_RUNNING) | |
2247 | u->manager->n_running_jobs++; | |
39a18c60 MS |
2248 | } else { |
2249 | /* legacy */ | |
2250 | JobType type = job_type_from_string(v); | |
2251 | if (type < 0) | |
2252 | log_debug("Failed to parse job type value %s", v); | |
2253 | else | |
2254 | u->deserialized_job = type; | |
2255 | } | |
cca098b0 | 2256 | continue; |
8aaf019b | 2257 | } else if (streq(l, "inactive-exit-timestamp")) { |
ac155bb8 | 2258 | dual_timestamp_deserialize(v, &u->inactive_exit_timestamp); |
8aaf019b LP |
2259 | continue; |
2260 | } else if (streq(l, "active-enter-timestamp")) { | |
ac155bb8 | 2261 | dual_timestamp_deserialize(v, &u->active_enter_timestamp); |
8aaf019b LP |
2262 | continue; |
2263 | } else if (streq(l, "active-exit-timestamp")) { | |
ac155bb8 | 2264 | dual_timestamp_deserialize(v, &u->active_exit_timestamp); |
8aaf019b LP |
2265 | continue; |
2266 | } else if (streq(l, "inactive-enter-timestamp")) { | |
ac155bb8 | 2267 | dual_timestamp_deserialize(v, &u->inactive_enter_timestamp); |
8aaf019b | 2268 | continue; |
2791a8f8 | 2269 | } else if (streq(l, "condition-timestamp")) { |
ac155bb8 | 2270 | dual_timestamp_deserialize(v, &u->condition_timestamp); |
2791a8f8 LP |
2271 | continue; |
2272 | } else if (streq(l, "condition-result")) { | |
2273 | int b; | |
2274 | ||
c2756a68 LP |
2275 | b = parse_boolean(v); |
2276 | if (b < 0) | |
2791a8f8 LP |
2277 | log_debug("Failed to parse condition result value %s", v); |
2278 | else | |
ac155bb8 | 2279 | u->condition_result = b; |
efbac6d2 LP |
2280 | |
2281 | continue; | |
c2756a68 LP |
2282 | |
2283 | } else if (streq(l, "transient")) { | |
2284 | int b; | |
2285 | ||
2286 | b = parse_boolean(v); | |
2287 | if (b < 0) | |
2288 | log_debug("Failed to parse transient bool %s", v); | |
2289 | else | |
2290 | u->transient = b; | |
2291 | ||
2292 | continue; | |
2293 | } else if (streq(l, "cgroup")) { | |
2294 | char *s; | |
2295 | ||
2296 | s = strdup(v); | |
f440e1bb | 2297 | if (!s) |
c2756a68 LP |
2298 | return -ENOMEM; |
2299 | ||
2300 | free(u->cgroup_path); | |
2301 | u->cgroup_path = s; | |
72673e86 | 2302 | |
b58b8e11 | 2303 | assert(hashmap_put(u->manager->cgroup_unit, s, u) == 1); |
c2756a68 | 2304 | continue; |
8aaf019b | 2305 | } |
cca098b0 | 2306 | |
613b411c LP |
2307 | if (rt) { |
2308 | r = exec_runtime_deserialize_item(rt, u, l, v, fds); | |
2309 | if (r < 0) | |
2310 | return r; | |
2311 | if (r > 0) | |
2312 | continue; | |
2313 | } | |
2314 | ||
c2756a68 LP |
2315 | r = UNIT_VTABLE(u)->deserialize_item(u, l, v, fds); |
2316 | if (r < 0) | |
a16e1123 LP |
2317 | return r; |
2318 | } | |
2319 | } | |
2320 | ||
6e2ef85b LP |
2321 | int unit_add_node_link(Unit *u, const char *what, bool wants) { |
2322 | Unit *device; | |
68eda4bd | 2323 | _cleanup_free_ char *e = NULL; |
6e2ef85b LP |
2324 | int r; |
2325 | ||
2326 | assert(u); | |
2327 | ||
2328 | if (!what) | |
2329 | return 0; | |
2330 | ||
2331 | /* Adds in links to the device node that this unit is based on */ | |
2332 | ||
8407a5d0 | 2333 | if (!is_device_path(what)) |
6e2ef85b LP |
2334 | return 0; |
2335 | ||
35eb6b12 LP |
2336 | e = unit_name_from_path(what, ".device"); |
2337 | if (!e) | |
6e2ef85b LP |
2338 | return -ENOMEM; |
2339 | ||
ac155bb8 | 2340 | r = manager_load_unit(u->manager, e, NULL, NULL, &device); |
68eda4bd | 2341 | |
6e2ef85b LP |
2342 | if (r < 0) |
2343 | return r; | |
2344 | ||
faa368e3 LP |
2345 | r = unit_add_two_dependencies(u, UNIT_AFTER, UNIT_BINDS_TO, device, true); |
2346 | if (r < 0) | |
6e2ef85b LP |
2347 | return r; |
2348 | ||
faa368e3 LP |
2349 | if (wants) { |
2350 | r = unit_add_dependency(device, UNIT_WANTS, u, false); | |
2351 | if (r < 0) | |
6e2ef85b | 2352 | return r; |
faa368e3 | 2353 | } |
6e2ef85b LP |
2354 | |
2355 | return 0; | |
2356 | } | |
a16e1123 | 2357 | |
cca098b0 LP |
2358 | int unit_coldplug(Unit *u) { |
2359 | int r; | |
2360 | ||
2361 | assert(u); | |
2362 | ||
2363 | if (UNIT_VTABLE(u)->coldplug) | |
2364 | if ((r = UNIT_VTABLE(u)->coldplug(u)) < 0) | |
2365 | return r; | |
2366 | ||
39a18c60 MS |
2367 | if (u->job) { |
2368 | r = job_coldplug(u->job); | |
2369 | if (r < 0) | |
2370 | return r; | |
2371 | } else if (u->deserialized_job >= 0) { | |
2372 | /* legacy */ | |
2373 | r = manager_add_job(u->manager, u->deserialized_job, u, JOB_IGNORE_REQUIREMENTS, false, NULL, NULL); | |
2374 | if (r < 0) | |
cca098b0 LP |
2375 | return r; |
2376 | ||
ac155bb8 | 2377 | u->deserialized_job = _JOB_TYPE_INVALID; |
cca098b0 LP |
2378 | } |
2379 | ||
2380 | return 0; | |
2381 | } | |
2382 | ||
b1e2b33c CR |
2383 | #pragma GCC diagnostic push |
2384 | #pragma GCC diagnostic ignored "-Wformat-nonliteral" | |
49b1d377 MS |
2385 | void unit_status_printf(Unit *u, const char *status, const char *unit_status_msg_format) { |
2386 | manager_status_printf(u->manager, false, status, unit_status_msg_format, unit_description(u)); | |
2387 | } | |
b1e2b33c | 2388 | #pragma GCC diagnostic pop |
49b1d377 | 2389 | |
45fb0699 | 2390 | bool unit_need_daemon_reload(Unit *u) { |
ae7a7182 OS |
2391 | _cleanup_strv_free_ char **t = NULL; |
2392 | char **path; | |
1b64d026 | 2393 | struct stat st; |
ae7a7182 | 2394 | unsigned loaded_cnt, current_cnt; |
1b64d026 | 2395 | |
45fb0699 LP |
2396 | assert(u); |
2397 | ||
ac155bb8 | 2398 | if (u->fragment_path) { |
5f4b19f4 | 2399 | zero(st); |
ac155bb8 | 2400 | if (stat(u->fragment_path, &st) < 0) |
5f4b19f4 LP |
2401 | /* What, cannot access this anymore? */ |
2402 | return true; | |
45fb0699 | 2403 | |
ac155bb8 MS |
2404 | if (u->fragment_mtime > 0 && |
2405 | timespec_load(&st.st_mtim) != u->fragment_mtime) | |
5f4b19f4 LP |
2406 | return true; |
2407 | } | |
2408 | ||
1b64d026 LP |
2409 | if (u->source_path) { |
2410 | zero(st); | |
2411 | if (stat(u->source_path, &st) < 0) | |
2412 | return true; | |
2413 | ||
2414 | if (u->source_mtime > 0 && | |
2415 | timespec_load(&st.st_mtim) != u->source_mtime) | |
2416 | return true; | |
2417 | } | |
5f4b19f4 | 2418 | |
ae7a7182 OS |
2419 | t = unit_find_dropin_paths(u); |
2420 | loaded_cnt = strv_length(t); | |
2421 | current_cnt = strv_length(u->dropin_paths); | |
2422 | ||
2423 | if (loaded_cnt == current_cnt) { | |
2424 | if (loaded_cnt == 0) | |
2425 | return false; | |
2426 | ||
2427 | if (strv_overlap(u->dropin_paths, t)) { | |
2428 | STRV_FOREACH(path, u->dropin_paths) { | |
2429 | zero(st); | |
2430 | if (stat(*path, &st) < 0) | |
2431 | return true; | |
2432 | ||
2433 | if (u->dropin_mtime > 0 && | |
2434 | timespec_load(&st.st_mtim) > u->dropin_mtime) | |
2435 | return true; | |
2436 | } | |
2437 | ||
2438 | return false; | |
2439 | } else | |
2440 | return true; | |
2441 | } else | |
2442 | return true; | |
45fb0699 LP |
2443 | } |
2444 | ||
fdf20a31 | 2445 | void unit_reset_failed(Unit *u) { |
5632e374 LP |
2446 | assert(u); |
2447 | ||
fdf20a31 MM |
2448 | if (UNIT_VTABLE(u)->reset_failed) |
2449 | UNIT_VTABLE(u)->reset_failed(u); | |
5632e374 LP |
2450 | } |
2451 | ||
a7f241db LP |
2452 | Unit *unit_following(Unit *u) { |
2453 | assert(u); | |
2454 | ||
2455 | if (UNIT_VTABLE(u)->following) | |
2456 | return UNIT_VTABLE(u)->following(u); | |
2457 | ||
2458 | return NULL; | |
2459 | } | |
2460 | ||
31afa0a4 | 2461 | bool unit_stop_pending(Unit *u) { |
18ffdfda LP |
2462 | assert(u); |
2463 | ||
31afa0a4 LP |
2464 | /* This call does check the current state of the unit. It's |
2465 | * hence useful to be called from state change calls of the | |
2466 | * unit itself, where the state isn't updated yet. This is | |
2467 | * different from unit_inactive_or_pending() which checks both | |
2468 | * the current state and for a queued job. */ | |
18ffdfda | 2469 | |
31afa0a4 LP |
2470 | return u->job && u->job->type == JOB_STOP; |
2471 | } | |
2472 | ||
2473 | bool unit_inactive_or_pending(Unit *u) { | |
2474 | assert(u); | |
2475 | ||
2476 | /* Returns true if the unit is inactive or going down */ | |
18ffdfda | 2477 | |
d956ac29 LP |
2478 | if (UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))) |
2479 | return true; | |
2480 | ||
31afa0a4 | 2481 | if (unit_stop_pending(u)) |
18ffdfda LP |
2482 | return true; |
2483 | ||
2484 | return false; | |
2485 | } | |
2486 | ||
31afa0a4 | 2487 | bool unit_active_or_pending(Unit *u) { |
f976f3f6 LP |
2488 | assert(u); |
2489 | ||
f60c2665 | 2490 | /* Returns true if the unit is active or going up */ |
f976f3f6 LP |
2491 | |
2492 | if (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) | |
2493 | return true; | |
2494 | ||
ac155bb8 MS |
2495 | if (u->job && |
2496 | (u->job->type == JOB_START || | |
2497 | u->job->type == JOB_RELOAD_OR_START || | |
2498 | u->job->type == JOB_RESTART)) | |
f976f3f6 LP |
2499 | return true; |
2500 | ||
2501 | return false; | |
2502 | } | |
2503 | ||
718db961 | 2504 | int unit_kill(Unit *u, KillWho w, int signo, sd_bus_error *error) { |
8a0867d6 LP |
2505 | assert(u); |
2506 | assert(w >= 0 && w < _KILL_WHO_MAX); | |
8a0867d6 LP |
2507 | assert(signo > 0); |
2508 | assert(signo < _NSIG); | |
2509 | ||
8a0867d6 LP |
2510 | if (!UNIT_VTABLE(u)->kill) |
2511 | return -ENOTSUP; | |
2512 | ||
c74f17d9 | 2513 | return UNIT_VTABLE(u)->kill(u, w, signo, error); |
8a0867d6 LP |
2514 | } |
2515 | ||
82659fd7 LP |
2516 | static Set *unit_pid_set(pid_t main_pid, pid_t control_pid) { |
2517 | Set *pid_set; | |
2518 | int r; | |
2519 | ||
2520 | pid_set = set_new(trivial_hash_func, trivial_compare_func); | |
2521 | if (!pid_set) | |
2522 | return NULL; | |
2523 | ||
2524 | /* Exclude the main/control pids from being killed via the cgroup */ | |
2525 | if (main_pid > 0) { | |
2526 | r = set_put(pid_set, LONG_TO_PTR(main_pid)); | |
2527 | if (r < 0) | |
2528 | goto fail; | |
2529 | } | |
2530 | ||
2531 | if (control_pid > 0) { | |
2532 | r = set_put(pid_set, LONG_TO_PTR(control_pid)); | |
2533 | if (r < 0) | |
2534 | goto fail; | |
2535 | } | |
2536 | ||
2537 | return pid_set; | |
2538 | ||
2539 | fail: | |
2540 | set_free(pid_set); | |
2541 | return NULL; | |
2542 | } | |
2543 | ||
d91c34f2 LP |
2544 | int unit_kill_common( |
2545 | Unit *u, | |
2546 | KillWho who, | |
2547 | int signo, | |
2548 | pid_t main_pid, | |
2549 | pid_t control_pid, | |
718db961 | 2550 | sd_bus_error *error) { |
d91c34f2 | 2551 | |
814cc562 MS |
2552 | int r = 0; |
2553 | ||
2554 | if (who == KILL_MAIN && main_pid <= 0) { | |
2555 | if (main_pid < 0) | |
718db961 | 2556 | sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_PROCESS, "%s units have no main processes", unit_type_to_string(u->type)); |
814cc562 | 2557 | else |
718db961 | 2558 | sd_bus_error_set_const(error, BUS_ERROR_NO_SUCH_PROCESS, "No main process to kill"); |
814cc562 MS |
2559 | return -ESRCH; |
2560 | } | |
2561 | ||
2562 | if (who == KILL_CONTROL && control_pid <= 0) { | |
2563 | if (control_pid < 0) | |
718db961 | 2564 | sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_PROCESS, "%s units have no control processes", unit_type_to_string(u->type)); |
814cc562 | 2565 | else |
718db961 | 2566 | sd_bus_error_set_const(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill"); |
814cc562 MS |
2567 | return -ESRCH; |
2568 | } | |
2569 | ||
2570 | if (who == KILL_CONTROL || who == KILL_ALL) | |
2571 | if (control_pid > 0) | |
2572 | if (kill(control_pid, signo) < 0) | |
2573 | r = -errno; | |
2574 | ||
2575 | if (who == KILL_MAIN || who == KILL_ALL) | |
2576 | if (main_pid > 0) | |
2577 | if (kill(main_pid, signo) < 0) | |
2578 | r = -errno; | |
2579 | ||
4ad49000 | 2580 | if (who == KILL_ALL && u->cgroup_path) { |
814cc562 MS |
2581 | _cleanup_set_free_ Set *pid_set = NULL; |
2582 | int q; | |
2583 | ||
82659fd7 LP |
2584 | /* Exclude the main/control pids from being killed via the cgroup */ |
2585 | pid_set = unit_pid_set(main_pid, control_pid); | |
814cc562 MS |
2586 | if (!pid_set) |
2587 | return -ENOMEM; | |
2588 | ||
4ad49000 | 2589 | q = cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, signo, false, true, false, pid_set); |
814cc562 MS |
2590 | if (q < 0 && q != -EAGAIN && q != -ESRCH && q != -ENOENT) |
2591 | r = q; | |
2592 | } | |
2593 | ||
2594 | return r; | |
2595 | } | |
2596 | ||
6210e7fc LP |
2597 | int unit_following_set(Unit *u, Set **s) { |
2598 | assert(u); | |
2599 | assert(s); | |
2600 | ||
2601 | if (UNIT_VTABLE(u)->following_set) | |
2602 | return UNIT_VTABLE(u)->following_set(u, s); | |
2603 | ||
2604 | *s = NULL; | |
2605 | return 0; | |
2606 | } | |
2607 | ||
a4375746 LP |
2608 | UnitFileState unit_get_unit_file_state(Unit *u) { |
2609 | assert(u); | |
2610 | ||
ac155bb8 MS |
2611 | if (u->unit_file_state < 0 && u->fragment_path) |
2612 | u->unit_file_state = unit_file_get_state( | |
67445f4e | 2613 | u->manager->running_as == SYSTEMD_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER, |
9eb977db | 2614 | NULL, path_get_file_name(u->fragment_path)); |
a4375746 | 2615 | |
ac155bb8 | 2616 | return u->unit_file_state; |
a4375746 LP |
2617 | } |
2618 | ||
57020a3a LP |
2619 | Unit* unit_ref_set(UnitRef *ref, Unit *u) { |
2620 | assert(ref); | |
2621 | assert(u); | |
2622 | ||
2623 | if (ref->unit) | |
2624 | unit_ref_unset(ref); | |
2625 | ||
2626 | ref->unit = u; | |
71fda00f | 2627 | LIST_PREPEND(refs, u->refs, ref); |
57020a3a LP |
2628 | return u; |
2629 | } | |
2630 | ||
2631 | void unit_ref_unset(UnitRef *ref) { | |
2632 | assert(ref); | |
2633 | ||
2634 | if (!ref->unit) | |
2635 | return; | |
2636 | ||
71fda00f | 2637 | LIST_REMOVE(refs, ref->unit->refs, ref); |
57020a3a LP |
2638 | ref->unit = NULL; |
2639 | } | |
2640 | ||
cba6e062 LP |
2641 | int unit_exec_context_defaults(Unit *u, ExecContext *c) { |
2642 | unsigned i; | |
2643 | int r; | |
2644 | ||
e06c73cc LP |
2645 | assert(u); |
2646 | assert(c); | |
2647 | ||
cba6e062 | 2648 | /* This only copies in the ones that need memory */ |
cba6e062 LP |
2649 | for (i = 0; i < RLIMIT_NLIMITS; i++) |
2650 | if (u->manager->rlimit[i] && !c->rlimit[i]) { | |
2651 | c->rlimit[i] = newdup(struct rlimit, u->manager->rlimit[i], 1); | |
2652 | if (!c->rlimit[i]) | |
2653 | return -ENOMEM; | |
2654 | } | |
2655 | ||
67445f4e | 2656 | if (u->manager->running_as == SYSTEMD_USER && |
cba6e062 | 2657 | !c->working_directory) { |
e06c73cc | 2658 | |
cba6e062 LP |
2659 | r = get_home_dir(&c->working_directory); |
2660 | if (r < 0) | |
2661 | return r; | |
2662 | } | |
2663 | ||
2664 | return 0; | |
e06c73cc LP |
2665 | } |
2666 | ||
3ef63c31 LP |
2667 | ExecContext *unit_get_exec_context(Unit *u) { |
2668 | size_t offset; | |
2669 | assert(u); | |
2670 | ||
2671 | offset = UNIT_VTABLE(u)->exec_context_offset; | |
2672 | if (offset <= 0) | |
2673 | return NULL; | |
2674 | ||
2675 | return (ExecContext*) ((uint8_t*) u + offset); | |
2676 | } | |
2677 | ||
718db961 LP |
2678 | KillContext *unit_get_kill_context(Unit *u) { |
2679 | size_t offset; | |
2680 | assert(u); | |
2681 | ||
2682 | offset = UNIT_VTABLE(u)->kill_context_offset; | |
2683 | if (offset <= 0) | |
2684 | return NULL; | |
2685 | ||
2686 | return (KillContext*) ((uint8_t*) u + offset); | |
2687 | } | |
2688 | ||
4ad49000 LP |
2689 | CGroupContext *unit_get_cgroup_context(Unit *u) { |
2690 | size_t offset; | |
2691 | ||
2692 | offset = UNIT_VTABLE(u)->cgroup_context_offset; | |
2693 | if (offset <= 0) | |
2694 | return NULL; | |
2695 | ||
2696 | return (CGroupContext*) ((uint8_t*) u + offset); | |
2697 | } | |
2698 | ||
613b411c LP |
2699 | ExecRuntime *unit_get_exec_runtime(Unit *u) { |
2700 | size_t offset; | |
2701 | ||
2702 | offset = UNIT_VTABLE(u)->exec_runtime_offset; | |
2703 | if (offset <= 0) | |
2704 | return NULL; | |
2705 | ||
2706 | return *(ExecRuntime**) ((uint8_t*) u + offset); | |
2707 | } | |
2708 | ||
8e2af478 | 2709 | static int drop_in_file(Unit *u, UnitSetPropertiesMode mode, const char *name, char **_p, char **_q) { |
b9ec9359 | 2710 | _cleanup_free_ char *b = NULL; |
26d04f86 LP |
2711 | char *p, *q; |
2712 | int r; | |
2713 | ||
71645aca | 2714 | assert(u); |
26d04f86 LP |
2715 | assert(name); |
2716 | assert(_p); | |
2717 | assert(_q); | |
8e2af478 | 2718 | assert(mode & (UNIT_PERSISTENT|UNIT_RUNTIME)); |
71645aca | 2719 | |
b9ec9359 LP |
2720 | b = xescape(name, "/."); |
2721 | if (!b) | |
2722 | return -ENOMEM; | |
2723 | ||
2724 | if (!filename_is_safe(b)) | |
71645aca LP |
2725 | return -EINVAL; |
2726 | ||
26d04f86 LP |
2727 | if (u->manager->running_as == SYSTEMD_USER) { |
2728 | _cleanup_free_ char *c = NULL; | |
2729 | ||
2730 | r = user_config_home(&c); | |
2731 | if (r < 0) | |
2732 | return r; | |
2733 | if (r == 0) | |
2734 | return -ENOENT; | |
2735 | ||
2736 | p = strjoin(c, "/", u->id, ".d", NULL); | |
c2756a68 | 2737 | } else if (mode & UNIT_PERSISTENT) |
26d04f86 | 2738 | p = strjoin("/etc/systemd/system/", u->id, ".d", NULL); |
8e2af478 LP |
2739 | else |
2740 | p = strjoin("/run/systemd/system/", u->id, ".d", NULL); | |
71645aca LP |
2741 | if (!p) |
2742 | return -ENOMEM; | |
2743 | ||
b9ec9359 | 2744 | q = strjoin(p, "/90-", b, ".conf", NULL); |
26d04f86 LP |
2745 | if (!q) { |
2746 | free(p); | |
71645aca | 2747 | return -ENOMEM; |
26d04f86 | 2748 | } |
71645aca | 2749 | |
26d04f86 LP |
2750 | *_p = p; |
2751 | *_q = q; | |
2752 | return 0; | |
71645aca LP |
2753 | } |
2754 | ||
8e2af478 | 2755 | int unit_write_drop_in(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data) { |
71645aca | 2756 | _cleanup_free_ char *p = NULL, *q = NULL; |
26d04f86 | 2757 | int r; |
71645aca LP |
2758 | |
2759 | assert(u); | |
b42defe3 LP |
2760 | assert(name); |
2761 | assert(data); | |
71645aca | 2762 | |
8e2af478 LP |
2763 | if (!(mode & (UNIT_PERSISTENT|UNIT_RUNTIME))) |
2764 | return 0; | |
2765 | ||
2766 | r = drop_in_file(u, mode, name, &p, &q); | |
26d04f86 LP |
2767 | if (r < 0) |
2768 | return r; | |
71645aca | 2769 | |
26d04f86 | 2770 | mkdir_p(p, 0755); |
574d5f2d | 2771 | return write_string_file_atomic_label(q, data); |
26d04f86 | 2772 | } |
71645aca | 2773 | |
b9ec9359 LP |
2774 | int unit_write_drop_in_format(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *format, ...) { |
2775 | _cleanup_free_ char *p = NULL; | |
2776 | va_list ap; | |
2777 | int r; | |
2778 | ||
2779 | assert(u); | |
2780 | assert(name); | |
2781 | assert(format); | |
2782 | ||
2783 | if (!(mode & (UNIT_PERSISTENT|UNIT_RUNTIME))) | |
2784 | return 0; | |
2785 | ||
2786 | va_start(ap, format); | |
2787 | r = vasprintf(&p, format, ap); | |
2788 | va_end(ap); | |
2789 | ||
2790 | if (r < 0) | |
2791 | return -ENOMEM; | |
2792 | ||
2793 | return unit_write_drop_in(u, mode, name, p); | |
2794 | } | |
2795 | ||
2796 | int unit_write_drop_in_private(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data) { | |
b42defe3 LP |
2797 | _cleanup_free_ char *ndata = NULL; |
2798 | ||
2799 | assert(u); | |
2800 | assert(name); | |
2801 | assert(data); | |
2802 | ||
2803 | if (!UNIT_VTABLE(u)->private_section) | |
2804 | return -EINVAL; | |
2805 | ||
b9ec9359 LP |
2806 | if (!(mode & (UNIT_PERSISTENT|UNIT_RUNTIME))) |
2807 | return 0; | |
2808 | ||
b42defe3 LP |
2809 | ndata = strjoin("[", UNIT_VTABLE(u)->private_section, "]\n", data, NULL); |
2810 | if (!ndata) | |
2811 | return -ENOMEM; | |
2812 | ||
2813 | return unit_write_drop_in(u, mode, name, ndata); | |
2814 | } | |
2815 | ||
b9ec9359 LP |
2816 | int unit_write_drop_in_private_format(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *format, ...) { |
2817 | _cleanup_free_ char *p = NULL; | |
2818 | va_list ap; | |
2819 | int r; | |
2820 | ||
2821 | assert(u); | |
2822 | assert(name); | |
2823 | assert(format); | |
2824 | ||
2825 | if (!(mode & (UNIT_PERSISTENT|UNIT_RUNTIME))) | |
2826 | return 0; | |
2827 | ||
2828 | va_start(ap, format); | |
2829 | r = vasprintf(&p, format, ap); | |
2830 | va_end(ap); | |
2831 | ||
2832 | if (r < 0) | |
2833 | return -ENOMEM; | |
2834 | ||
2835 | return unit_write_drop_in_private(u, mode, name, p); | |
2836 | } | |
2837 | ||
8e2af478 | 2838 | int unit_remove_drop_in(Unit *u, UnitSetPropertiesMode mode, const char *name) { |
26d04f86 LP |
2839 | _cleanup_free_ char *p = NULL, *q = NULL; |
2840 | int r; | |
71645aca | 2841 | |
26d04f86 | 2842 | assert(u); |
71645aca | 2843 | |
8e2af478 LP |
2844 | if (!(mode & (UNIT_PERSISTENT|UNIT_RUNTIME))) |
2845 | return 0; | |
2846 | ||
2847 | r = drop_in_file(u, mode, name, &p, &q); | |
6891529f ZJS |
2848 | if (r < 0) |
2849 | return r; | |
2850 | ||
71645aca | 2851 | if (unlink(q) < 0) |
241da328 | 2852 | r = errno == ENOENT ? 0 : -errno; |
26d04f86 | 2853 | else |
241da328 | 2854 | r = 1; |
71645aca LP |
2855 | |
2856 | rmdir(p); | |
26d04f86 | 2857 | return r; |
71645aca LP |
2858 | } |
2859 | ||
c2756a68 LP |
2860 | int unit_make_transient(Unit *u) { |
2861 | int r; | |
2862 | ||
2863 | assert(u); | |
2864 | ||
2865 | u->load_state = UNIT_STUB; | |
2866 | u->load_error = 0; | |
2867 | u->transient = true; | |
2868 | ||
2869 | free(u->fragment_path); | |
2870 | u->fragment_path = NULL; | |
2871 | ||
2872 | if (u->manager->running_as == SYSTEMD_USER) { | |
2873 | _cleanup_free_ char *c = NULL; | |
2874 | ||
2875 | r = user_config_home(&c); | |
2876 | if (r < 0) | |
2877 | return r; | |
2878 | if (r == 0) | |
2879 | return -ENOENT; | |
2880 | ||
2881 | u->fragment_path = strjoin(c, "/", u->id, NULL); | |
2882 | if (!u->fragment_path) | |
2883 | return -ENOMEM; | |
2884 | ||
2885 | mkdir_p(c, 0755); | |
2886 | } else { | |
2887 | u->fragment_path = strappend("/run/systemd/system/", u->id); | |
2888 | if (!u->fragment_path) | |
2889 | return -ENOMEM; | |
2890 | ||
2891 | mkdir_p("/run/systemd/system", 0755); | |
2892 | } | |
2893 | ||
2894 | return write_string_file_atomic_label(u->fragment_path, "# Transient stub"); | |
2895 | } | |
2896 | ||
cd2086fe LP |
2897 | int unit_kill_context( |
2898 | Unit *u, | |
2899 | KillContext *c, | |
2900 | bool sigkill, | |
2901 | pid_t main_pid, | |
2902 | pid_t control_pid, | |
2903 | bool main_pid_alien) { | |
2904 | ||
2905 | int sig, wait_for_exit = 0, r; | |
2906 | ||
2907 | assert(u); | |
2908 | assert(c); | |
2909 | ||
2910 | if (c->kill_mode == KILL_NONE) | |
2911 | return 0; | |
2912 | ||
2913 | sig = sigkill ? SIGKILL : c->kill_signal; | |
2914 | ||
2915 | if (main_pid > 0) { | |
2916 | r = kill_and_sigcont(main_pid, sig); | |
2917 | ||
2918 | if (r < 0 && r != -ESRCH) { | |
2919 | _cleanup_free_ char *comm = NULL; | |
2920 | get_process_comm(main_pid, &comm); | |
2921 | ||
2922 | log_warning_unit(u->id, "Failed to kill main process %li (%s): %s", | |
2923 | (long) main_pid, strna(comm), strerror(-r)); | |
82659fd7 | 2924 | } else { |
cd2086fe | 2925 | wait_for_exit = !main_pid_alien; |
82659fd7 LP |
2926 | |
2927 | if (c->send_sighup) | |
2928 | kill(main_pid, SIGHUP); | |
2929 | } | |
cd2086fe LP |
2930 | } |
2931 | ||
2932 | if (control_pid > 0) { | |
2933 | r = kill_and_sigcont(control_pid, sig); | |
2934 | ||
2935 | if (r < 0 && r != -ESRCH) { | |
2936 | _cleanup_free_ char *comm = NULL; | |
2937 | get_process_comm(control_pid, &comm); | |
2938 | ||
2939 | log_warning_unit(u->id, | |
2940 | "Failed to kill control process %li (%s): %s", | |
2941 | (long) control_pid, strna(comm), strerror(-r)); | |
82659fd7 | 2942 | } else { |
cd2086fe | 2943 | wait_for_exit = true; |
82659fd7 LP |
2944 | |
2945 | if (c->send_sighup) | |
2946 | kill(control_pid, SIGHUP); | |
2947 | } | |
cd2086fe LP |
2948 | } |
2949 | ||
4ad49000 | 2950 | if (c->kill_mode == KILL_CONTROL_GROUP && u->cgroup_path) { |
cd2086fe LP |
2951 | _cleanup_set_free_ Set *pid_set = NULL; |
2952 | ||
82659fd7 LP |
2953 | /* Exclude the main/control pids from being killed via the cgroup */ |
2954 | pid_set = unit_pid_set(main_pid, control_pid); | |
cd2086fe LP |
2955 | if (!pid_set) |
2956 | return -ENOMEM; | |
2957 | ||
4ad49000 | 2958 | r = cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, sig, true, true, false, pid_set); |
cd2086fe LP |
2959 | if (r < 0) { |
2960 | if (r != -EAGAIN && r != -ESRCH && r != -ENOENT) | |
2961 | log_warning_unit(u->id, "Failed to kill control group: %s", strerror(-r)); | |
82659fd7 | 2962 | } else if (r > 0) { |
cd2086fe | 2963 | wait_for_exit = true; |
82659fd7 LP |
2964 | if (c->send_sighup) { |
2965 | set_free(pid_set); | |
2966 | ||
2967 | pid_set = unit_pid_set(main_pid, control_pid); | |
2968 | if (!pid_set) | |
2969 | return -ENOMEM; | |
2970 | ||
2971 | cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, SIGHUP, true, true, false, pid_set); | |
2972 | } | |
2973 | } | |
cd2086fe LP |
2974 | } |
2975 | ||
2976 | return wait_for_exit; | |
2977 | } | |
2978 | ||
a57f7e2c LP |
2979 | int unit_require_mounts_for(Unit *u, const char *path) { |
2980 | char prefix[strlen(path) + 1], *p; | |
2981 | int r; | |
2982 | ||
2983 | assert(u); | |
2984 | assert(path); | |
2985 | ||
2986 | /* Registers a unit for requiring a certain path and all its | |
2987 | * prefixes. We keep a simple array of these paths in the | |
2988 | * unit, since its usually short. However, we build a prefix | |
2989 | * table for all possible prefixes so that new appearing mount | |
2990 | * units can easily determine which units to make themselves a | |
2991 | * dependency of. */ | |
2992 | ||
2993 | p = strdup(path); | |
2994 | if (!p) | |
2995 | return -ENOMEM; | |
2996 | ||
2997 | path_kill_slashes(p); | |
2998 | ||
2999 | if (!path_is_absolute(p)) { | |
3000 | free(p); | |
3001 | return -EINVAL; | |
3002 | } | |
3003 | ||
3004 | if (!path_is_safe(p)) { | |
3005 | free(p); | |
3006 | return -EPERM; | |
3007 | } | |
3008 | ||
3009 | if (strv_contains(u->requires_mounts_for, p)) { | |
3010 | free(p); | |
3011 | return 0; | |
3012 | } | |
3013 | ||
3014 | r = strv_push(&u->requires_mounts_for, p); | |
3015 | if (r < 0) { | |
3016 | free(p); | |
3017 | return r; | |
3018 | } | |
3019 | ||
3020 | PATH_FOREACH_PREFIX_MORE(prefix, p) { | |
3021 | Set *x; | |
3022 | ||
3023 | x = hashmap_get(u->manager->units_requiring_mounts_for, prefix); | |
3024 | if (!x) { | |
3025 | char *q; | |
3026 | ||
3027 | if (!u->manager->units_requiring_mounts_for) { | |
3028 | u->manager->units_requiring_mounts_for = hashmap_new(string_hash_func, string_compare_func); | |
3029 | if (!u->manager->units_requiring_mounts_for) | |
3030 | return -ENOMEM; | |
3031 | } | |
3032 | ||
3033 | q = strdup(prefix); | |
3034 | if (!q) | |
3035 | return -ENOMEM; | |
3036 | ||
3037 | x = set_new(NULL, NULL); | |
3038 | if (!x) { | |
3039 | free(q); | |
3040 | return -ENOMEM; | |
3041 | } | |
3042 | ||
3043 | r = hashmap_put(u->manager->units_requiring_mounts_for, q, x); | |
3044 | if (r < 0) { | |
3045 | free(q); | |
3046 | set_free(x); | |
3047 | return r; | |
3048 | } | |
3049 | } | |
3050 | ||
3051 | r = set_put(x, u); | |
3052 | if (r < 0) | |
3053 | return r; | |
3054 | } | |
3055 | ||
3056 | return 0; | |
3057 | } | |
3058 | ||
613b411c LP |
3059 | int unit_setup_exec_runtime(Unit *u) { |
3060 | ExecRuntime **rt; | |
3061 | size_t offset; | |
3062 | Iterator i; | |
3063 | Unit *other; | |
3064 | ||
3065 | offset = UNIT_VTABLE(u)->exec_runtime_offset; | |
3066 | assert(offset > 0); | |
3067 | ||
3068 | /* Check if ther already is an ExecRuntime for this unit? */ | |
3069 | rt = (ExecRuntime**) ((uint8_t*) u + offset); | |
3070 | if (*rt) | |
3071 | return 0; | |
3072 | ||
3073 | /* Try to get it from somebody else */ | |
3074 | SET_FOREACH(other, u->dependencies[UNIT_JOINS_NAMESPACE_OF], i) { | |
3075 | ||
3076 | *rt = unit_get_exec_runtime(other); | |
3077 | if (*rt) { | |
3078 | exec_runtime_ref(*rt); | |
3079 | return 0; | |
3080 | } | |
3081 | } | |
3082 | ||
3083 | return exec_runtime_make(rt, unit_get_exec_context(u), u->id); | |
3084 | } | |
3085 | ||
94f04347 LP |
3086 | static const char* const unit_active_state_table[_UNIT_ACTIVE_STATE_MAX] = { |
3087 | [UNIT_ACTIVE] = "active", | |
032ff4af | 3088 | [UNIT_RELOADING] = "reloading", |
94f04347 | 3089 | [UNIT_INACTIVE] = "inactive", |
fdf20a31 | 3090 | [UNIT_FAILED] = "failed", |
94f04347 LP |
3091 | [UNIT_ACTIVATING] = "activating", |
3092 | [UNIT_DEACTIVATING] = "deactivating" | |
3093 | }; | |
3094 | ||
3095 | DEFINE_STRING_TABLE_LOOKUP(unit_active_state, UnitActiveState); | |
3096 | ||
3097 | static const char* const unit_dependency_table[_UNIT_DEPENDENCY_MAX] = { | |
3098 | [UNIT_REQUIRES] = "Requires", | |
9e2f7c11 | 3099 | [UNIT_REQUIRES_OVERRIDABLE] = "RequiresOverridable", |
94f04347 | 3100 | [UNIT_REQUISITE] = "Requisite", |
9e2f7c11 | 3101 | [UNIT_REQUISITE_OVERRIDABLE] = "RequisiteOverridable", |
ac6a4abe MS |
3102 | [UNIT_WANTS] = "Wants", |
3103 | [UNIT_BINDS_TO] = "BindsTo", | |
3104 | [UNIT_PART_OF] = "PartOf", | |
94f04347 | 3105 | [UNIT_REQUIRED_BY] = "RequiredBy", |
9e2f7c11 | 3106 | [UNIT_REQUIRED_BY_OVERRIDABLE] = "RequiredByOverridable", |
94f04347 | 3107 | [UNIT_WANTED_BY] = "WantedBy", |
ac6a4abe MS |
3108 | [UNIT_BOUND_BY] = "BoundBy", |
3109 | [UNIT_CONSISTS_OF] = "ConsistsOf", | |
94f04347 | 3110 | [UNIT_CONFLICTS] = "Conflicts", |
69dd2852 | 3111 | [UNIT_CONFLICTED_BY] = "ConflictedBy", |
94f04347 LP |
3112 | [UNIT_BEFORE] = "Before", |
3113 | [UNIT_AFTER] = "After", | |
57020a3a LP |
3114 | [UNIT_ON_FAILURE] = "OnFailure", |
3115 | [UNIT_TRIGGERS] = "Triggers", | |
4dcc1cb4 | 3116 | [UNIT_TRIGGERED_BY] = "TriggeredBy", |
7f2cddae | 3117 | [UNIT_PROPAGATES_RELOAD_TO] = "PropagatesReloadTo", |
ac6a4abe MS |
3118 | [UNIT_RELOAD_PROPAGATED_FROM] = "ReloadPropagatedFrom", |
3119 | [UNIT_REFERENCES] = "References", | |
3120 | [UNIT_REFERENCED_BY] = "ReferencedBy", | |
613b411c | 3121 | [UNIT_JOINS_NAMESPACE_OF] = "JoinsNamespaceOf", |
94f04347 LP |
3122 | }; |
3123 | ||
3124 | DEFINE_STRING_TABLE_LOOKUP(unit_dependency, UnitDependency); |