]>
Commit | Line | Data |
---|---|---|
d6c9574f | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
87f0e418 | 2 | |
a7334b09 LP |
3 | /*** |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
9 | under the terms of the GNU Lesser General Public License as published by |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
11 | (at your option) any later version. |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 16 | Lesser General Public License for more details. |
a7334b09 | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
87f0e418 LP |
22 | #include <assert.h> |
23 | #include <errno.h> | |
24 | #include <string.h> | |
25 | #include <sys/epoll.h> | |
26 | #include <sys/timerfd.h> | |
27 | #include <sys/poll.h> | |
0301abf4 LP |
28 | #include <stdlib.h> |
29 | #include <unistd.h> | |
45fb0699 | 30 | #include <sys/stat.h> |
87f0e418 | 31 | |
877d54e9 LP |
32 | #include "systemd/sd-id128.h" |
33 | #include "systemd/sd-messages.h" | |
87f0e418 LP |
34 | #include "set.h" |
35 | #include "unit.h" | |
36 | #include "macro.h" | |
37 | #include "strv.h" | |
9eb977db | 38 | #include "path-util.h" |
87f0e418 LP |
39 | #include "load-fragment.h" |
40 | #include "load-dropin.h" | |
41 | #include "log.h" | |
9e2f7c11 | 42 | #include "unit-name.h" |
4139c1b2 | 43 | #include "dbus-unit.h" |
514f4ef5 | 44 | #include "special.h" |
c6c18be3 | 45 | #include "cgroup-util.h" |
4927fcae | 46 | #include "missing.h" |
71645aca | 47 | #include "mkdir.h" |
a5c32cff HH |
48 | #include "label.h" |
49 | #include "fileio-label.h" | |
814cc562 | 50 | #include "bus-errors.h" |
87f0e418 LP |
51 | |
52 | const UnitVTable * const unit_vtable[_UNIT_TYPE_MAX] = { | |
53 | [UNIT_SERVICE] = &service_vtable, | |
54 | [UNIT_TIMER] = &timer_vtable, | |
55 | [UNIT_SOCKET] = &socket_vtable, | |
56 | [UNIT_TARGET] = &target_vtable, | |
57 | [UNIT_DEVICE] = &device_vtable, | |
58 | [UNIT_MOUNT] = &mount_vtable, | |
59 | [UNIT_AUTOMOUNT] = &automount_vtable, | |
07b0b134 | 60 | [UNIT_SNAPSHOT] = &snapshot_vtable, |
01f78473 | 61 | [UNIT_SWAP] = &swap_vtable, |
a016b922 | 62 | [UNIT_PATH] = &path_vtable, |
6c12b52e LP |
63 | [UNIT_SLICE] = &slice_vtable, |
64 | [UNIT_SCOPE] = &scope_vtable | |
87f0e418 LP |
65 | }; |
66 | ||
7d17cfbc | 67 | Unit *unit_new(Manager *m, size_t size) { |
87f0e418 LP |
68 | Unit *u; |
69 | ||
70 | assert(m); | |
ac155bb8 | 71 | assert(size >= sizeof(Unit)); |
87f0e418 | 72 | |
7d17cfbc MS |
73 | u = malloc0(size); |
74 | if (!u) | |
87f0e418 LP |
75 | return NULL; |
76 | ||
ac155bb8 MS |
77 | u->names = set_new(string_hash_func, string_compare_func); |
78 | if (!u->names) { | |
87f0e418 LP |
79 | free(u); |
80 | return NULL; | |
81 | } | |
82 | ||
ac155bb8 MS |
83 | u->manager = m; |
84 | u->type = _UNIT_TYPE_INVALID; | |
85 | u->deserialized_job = _JOB_TYPE_INVALID; | |
86 | u->default_dependencies = true; | |
87 | u->unit_file_state = _UNIT_FILE_STATE_INVALID; | |
87f0e418 LP |
88 | |
89 | return u; | |
90 | } | |
91 | ||
f278026d LP |
92 | bool unit_has_name(Unit *u, const char *name) { |
93 | assert(u); | |
94 | assert(name); | |
95 | ||
ac155bb8 | 96 | return !!set_get(u->names, (char*) name); |
f278026d LP |
97 | } |
98 | ||
87f0e418 LP |
99 | int unit_add_name(Unit *u, const char *text) { |
100 | UnitType t; | |
276c3e78 | 101 | char *s, *i = NULL; |
87f0e418 LP |
102 | int r; |
103 | ||
104 | assert(u); | |
105 | assert(text); | |
106 | ||
9e2f7c11 | 107 | if (unit_name_is_template(text)) { |
ac155bb8 | 108 | if (!u->instance) |
9e2f7c11 | 109 | return -EINVAL; |
87f0e418 | 110 | |
ac155bb8 | 111 | s = unit_name_replace_instance(text, u->instance); |
9e2f7c11 LP |
112 | } else |
113 | s = strdup(text); | |
87f0e418 | 114 | |
9e2f7c11 LP |
115 | if (!s) |
116 | return -ENOMEM; | |
87f0e418 | 117 | |
b9c0d441 | 118 | if (!unit_name_is_valid(s, false)) { |
9e2f7c11 LP |
119 | r = -EINVAL; |
120 | goto fail; | |
121 | } | |
e537352b | 122 | |
9e2f7c11 | 123 | assert_se((t = unit_name_to_type(s)) >= 0); |
87f0e418 | 124 | |
ac155bb8 | 125 | if (u->type != _UNIT_TYPE_INVALID && t != u->type) { |
9e2f7c11 LP |
126 | r = -EINVAL; |
127 | goto fail; | |
128 | } | |
87f0e418 | 129 | |
9e2f7c11 LP |
130 | if ((r = unit_name_to_instance(s, &i)) < 0) |
131 | goto fail; | |
87f0e418 | 132 | |
796ba554 LP |
133 | if (i && unit_vtable[t]->no_instances) { |
134 | r = -EINVAL; | |
9e2f7c11 | 135 | goto fail; |
796ba554 | 136 | } |
9e2f7c11 | 137 | |
276c3e78 LP |
138 | /* Ensure that this unit is either instanced or not instanced, |
139 | * but not both. */ | |
ac155bb8 | 140 | if (u->type != _UNIT_TYPE_INVALID && !u->instance != !i) { |
9e2f7c11 LP |
141 | r = -EINVAL; |
142 | goto fail; | |
143 | } | |
144 | ||
145 | if (unit_vtable[t]->no_alias && | |
ac155bb8 MS |
146 | !set_isempty(u->names) && |
147 | !set_get(u->names, s)) { | |
9e2f7c11 LP |
148 | r = -EEXIST; |
149 | goto fail; | |
150 | } | |
151 | ||
ac155bb8 | 152 | if (hashmap_size(u->manager->units) >= MANAGER_MAX_NAMES) { |
4f0f902f LP |
153 | r = -E2BIG; |
154 | goto fail; | |
155 | } | |
156 | ||
ac155bb8 | 157 | if ((r = set_put(u->names, s)) < 0) { |
9e2f7c11 LP |
158 | if (r == -EEXIST) |
159 | r = 0; | |
160 | goto fail; | |
87f0e418 LP |
161 | } |
162 | ||
ac155bb8 MS |
163 | if ((r = hashmap_put(u->manager->units, s, u)) < 0) { |
164 | set_remove(u->names, s); | |
9e2f7c11 | 165 | goto fail; |
87f0e418 LP |
166 | } |
167 | ||
ac155bb8 | 168 | if (u->type == _UNIT_TYPE_INVALID) { |
ef734fd6 | 169 | |
ac155bb8 MS |
170 | u->type = t; |
171 | u->id = s; | |
172 | u->instance = i; | |
9e2f7c11 | 173 | |
ac155bb8 | 174 | LIST_PREPEND(Unit, units_by_type, u->manager->units_by_type[t], u); |
e537352b LP |
175 | |
176 | if (UNIT_VTABLE(u)->init) | |
177 | UNIT_VTABLE(u)->init(u); | |
9e2f7c11 LP |
178 | } else |
179 | free(i); | |
87f0e418 | 180 | |
c1e1601e | 181 | unit_add_to_dbus_queue(u); |
87f0e418 | 182 | return 0; |
9e2f7c11 LP |
183 | |
184 | fail: | |
185 | free(s); | |
186 | free(i); | |
187 | ||
188 | return r; | |
87f0e418 LP |
189 | } |
190 | ||
0ae97ec1 | 191 | int unit_choose_id(Unit *u, const char *name) { |
68eda4bd RC |
192 | char *s, *i; |
193 | _cleanup_free_ char *t = NULL; | |
276c3e78 | 194 | int r; |
0ae97ec1 LP |
195 | |
196 | assert(u); | |
197 | assert(name); | |
198 | ||
9e2f7c11 LP |
199 | if (unit_name_is_template(name)) { |
200 | ||
ac155bb8 | 201 | if (!u->instance) |
9e2f7c11 LP |
202 | return -EINVAL; |
203 | ||
ac155bb8 | 204 | if (!(t = unit_name_replace_instance(name, u->instance))) |
9e2f7c11 LP |
205 | return -ENOMEM; |
206 | ||
207 | name = t; | |
208 | } | |
209 | ||
0ae97ec1 | 210 | /* Selects one of the names of this unit as the id */ |
ac155bb8 | 211 | s = set_get(u->names, (char*) name); |
0ae97ec1 | 212 | |
9e2f7c11 | 213 | if (!s) |
0ae97ec1 LP |
214 | return -ENOENT; |
215 | ||
276c3e78 LP |
216 | if ((r = unit_name_to_instance(s, &i)) < 0) |
217 | return r; | |
218 | ||
ac155bb8 | 219 | u->id = s; |
276c3e78 | 220 | |
ac155bb8 MS |
221 | free(u->instance); |
222 | u->instance = i; | |
276c3e78 | 223 | |
c1e1601e | 224 | unit_add_to_dbus_queue(u); |
9e2f7c11 | 225 | |
0ae97ec1 LP |
226 | return 0; |
227 | } | |
228 | ||
f50e0a01 LP |
229 | int unit_set_description(Unit *u, const char *description) { |
230 | char *s; | |
231 | ||
232 | assert(u); | |
233 | ||
8aec412f LP |
234 | if (isempty(description)) |
235 | s = NULL; | |
236 | else { | |
237 | s = strdup(description); | |
238 | if (!s) | |
239 | return -ENOMEM; | |
240 | } | |
f50e0a01 | 241 | |
ac155bb8 MS |
242 | free(u->description); |
243 | u->description = s; | |
c1e1601e LP |
244 | |
245 | unit_add_to_dbus_queue(u); | |
f50e0a01 LP |
246 | return 0; |
247 | } | |
248 | ||
701cc384 LP |
249 | bool unit_check_gc(Unit *u) { |
250 | assert(u); | |
251 | ||
ac155bb8 | 252 | if (u->load_state == UNIT_STUB) |
b86d44e5 LP |
253 | return true; |
254 | ||
701cc384 LP |
255 | if (UNIT_VTABLE(u)->no_gc) |
256 | return true; | |
257 | ||
ac155bb8 | 258 | if (u->no_gc) |
6c073082 LP |
259 | return true; |
260 | ||
ac155bb8 | 261 | if (u->job) |
701cc384 LP |
262 | return true; |
263 | ||
e0209d83 MS |
264 | if (u->nop_job) |
265 | return true; | |
266 | ||
701cc384 LP |
267 | if (unit_active_state(u) != UNIT_INACTIVE) |
268 | return true; | |
269 | ||
9d576438 LP |
270 | if (u->refs) |
271 | return true; | |
272 | ||
701cc384 LP |
273 | if (UNIT_VTABLE(u)->check_gc) |
274 | if (UNIT_VTABLE(u)->check_gc(u)) | |
275 | return true; | |
276 | ||
277 | return false; | |
278 | } | |
279 | ||
87f0e418 LP |
280 | void unit_add_to_load_queue(Unit *u) { |
281 | assert(u); | |
ac155bb8 | 282 | assert(u->type != _UNIT_TYPE_INVALID); |
87f0e418 | 283 | |
ac155bb8 | 284 | if (u->load_state != UNIT_STUB || u->in_load_queue) |
87f0e418 LP |
285 | return; |
286 | ||
ac155bb8 MS |
287 | LIST_PREPEND(Unit, load_queue, u->manager->load_queue, u); |
288 | u->in_load_queue = true; | |
87f0e418 LP |
289 | } |
290 | ||
23a177ef LP |
291 | void unit_add_to_cleanup_queue(Unit *u) { |
292 | assert(u); | |
293 | ||
ac155bb8 | 294 | if (u->in_cleanup_queue) |
23a177ef LP |
295 | return; |
296 | ||
ac155bb8 MS |
297 | LIST_PREPEND(Unit, cleanup_queue, u->manager->cleanup_queue, u); |
298 | u->in_cleanup_queue = true; | |
23a177ef LP |
299 | } |
300 | ||
701cc384 LP |
301 | void unit_add_to_gc_queue(Unit *u) { |
302 | assert(u); | |
303 | ||
ac155bb8 | 304 | if (u->in_gc_queue || u->in_cleanup_queue) |
701cc384 LP |
305 | return; |
306 | ||
307 | if (unit_check_gc(u)) | |
308 | return; | |
309 | ||
ac155bb8 MS |
310 | LIST_PREPEND(Unit, gc_queue, u->manager->gc_queue, u); |
311 | u->in_gc_queue = true; | |
701cc384 | 312 | |
ac155bb8 | 313 | u->manager->n_in_gc_queue ++; |
701cc384 LP |
314 | } |
315 | ||
c1e1601e LP |
316 | void unit_add_to_dbus_queue(Unit *u) { |
317 | assert(u); | |
ac155bb8 | 318 | assert(u->type != _UNIT_TYPE_INVALID); |
c1e1601e | 319 | |
ac155bb8 | 320 | if (u->load_state == UNIT_STUB || u->in_dbus_queue) |
c1e1601e LP |
321 | return; |
322 | ||
a567261a | 323 | /* Shortcut things if nobody cares */ |
ac155bb8 MS |
324 | if (!bus_has_subscriber(u->manager)) { |
325 | u->sent_dbus_new_signal = true; | |
94b6dfa2 LP |
326 | return; |
327 | } | |
328 | ||
ac155bb8 MS |
329 | LIST_PREPEND(Unit, dbus_queue, u->manager->dbus_unit_queue, u); |
330 | u->in_dbus_queue = true; | |
c1e1601e LP |
331 | } |
332 | ||
87f0e418 LP |
333 | static void bidi_set_free(Unit *u, Set *s) { |
334 | Iterator i; | |
335 | Unit *other; | |
336 | ||
337 | assert(u); | |
338 | ||
339 | /* Frees the set and makes sure we are dropped from the | |
340 | * inverse pointers */ | |
341 | ||
342 | SET_FOREACH(other, s, i) { | |
343 | UnitDependency d; | |
344 | ||
345 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) | |
ac155bb8 | 346 | set_remove(other->dependencies[d], u); |
701cc384 LP |
347 | |
348 | unit_add_to_gc_queue(other); | |
87f0e418 LP |
349 | } |
350 | ||
351 | set_free(s); | |
352 | } | |
353 | ||
c2756a68 LP |
354 | static void unit_remove_transient(Unit *u) { |
355 | char **i; | |
356 | ||
357 | assert(u); | |
358 | ||
359 | if (!u->transient) | |
360 | return; | |
361 | ||
362 | if (u->fragment_path) | |
363 | unlink(u->fragment_path); | |
364 | ||
365 | STRV_FOREACH(i, u->dropin_paths) { | |
366 | _cleanup_free_ char *p = NULL; | |
367 | int r; | |
368 | ||
369 | unlink(*i); | |
370 | ||
371 | r = path_get_parent(*i, &p); | |
372 | if (r >= 0) | |
373 | rmdir(p); | |
374 | } | |
375 | } | |
376 | ||
a57f7e2c LP |
377 | static void unit_free_requires_mounts_for(Unit *u) { |
378 | char **j; | |
379 | ||
380 | STRV_FOREACH(j, u->requires_mounts_for) { | |
381 | char s[strlen(*j) + 1]; | |
382 | ||
383 | PATH_FOREACH_PREFIX_MORE(s, *j) { | |
384 | char *y; | |
385 | Set *x; | |
386 | ||
387 | x = hashmap_get2(u->manager->units_requiring_mounts_for, s, (void**) &y); | |
388 | if (!x) | |
389 | continue; | |
390 | ||
391 | set_remove(x, u); | |
392 | ||
393 | if (set_isempty(x)) { | |
394 | hashmap_remove(u->manager->units_requiring_mounts_for, y); | |
395 | free(y); | |
396 | set_free(x); | |
397 | } | |
398 | } | |
399 | } | |
400 | ||
401 | strv_free(u->requires_mounts_for); | |
402 | u->requires_mounts_for = NULL; | |
403 | } | |
404 | ||
87f0e418 LP |
405 | void unit_free(Unit *u) { |
406 | UnitDependency d; | |
407 | Iterator i; | |
408 | char *t; | |
409 | ||
410 | assert(u); | |
411 | ||
c2756a68 LP |
412 | if (u->manager->n_reloading <= 0) |
413 | unit_remove_transient(u); | |
414 | ||
c1e1601e LP |
415 | bus_unit_send_removed_signal(u); |
416 | ||
ac155bb8 | 417 | if (u->load_state != UNIT_STUB) |
a013b84b LP |
418 | if (UNIT_VTABLE(u)->done) |
419 | UNIT_VTABLE(u)->done(u); | |
420 | ||
a57f7e2c LP |
421 | unit_free_requires_mounts_for(u); |
422 | ||
ac155bb8 MS |
423 | SET_FOREACH(t, u->names, i) |
424 | hashmap_remove_value(u->manager->units, t, u); | |
87f0e418 | 425 | |
97e7d748 MS |
426 | if (u->job) { |
427 | Job *j = u->job; | |
428 | job_uninstall(j); | |
429 | job_free(j); | |
430 | } | |
964e0949 | 431 | |
e0209d83 MS |
432 | if (u->nop_job) { |
433 | Job *j = u->nop_job; | |
434 | job_uninstall(j); | |
435 | job_free(j); | |
436 | } | |
437 | ||
964e0949 | 438 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) |
ac155bb8 | 439 | bidi_set_free(u, u->dependencies[d]); |
964e0949 | 440 | |
ac155bb8 MS |
441 | if (u->type != _UNIT_TYPE_INVALID) |
442 | LIST_REMOVE(Unit, units_by_type, u->manager->units_by_type[u->type], u); | |
ef734fd6 | 443 | |
ac155bb8 MS |
444 | if (u->in_load_queue) |
445 | LIST_REMOVE(Unit, load_queue, u->manager->load_queue, u); | |
87f0e418 | 446 | |
ac155bb8 MS |
447 | if (u->in_dbus_queue) |
448 | LIST_REMOVE(Unit, dbus_queue, u->manager->dbus_unit_queue, u); | |
c1e1601e | 449 | |
ac155bb8 MS |
450 | if (u->in_cleanup_queue) |
451 | LIST_REMOVE(Unit, cleanup_queue, u->manager->cleanup_queue, u); | |
23a177ef | 452 | |
ac155bb8 MS |
453 | if (u->in_gc_queue) { |
454 | LIST_REMOVE(Unit, gc_queue, u->manager->gc_queue, u); | |
455 | u->manager->n_in_gc_queue--; | |
701cc384 LP |
456 | } |
457 | ||
4ad49000 LP |
458 | if (u->in_cgroup_queue) |
459 | LIST_REMOVE(Unit, cgroup_queue, u->manager->cgroup_queue, u); | |
87f0e418 | 460 | |
72673e86 LP |
461 | if (u->cgroup_path) { |
462 | hashmap_remove(u->manager->cgroup_unit, u->cgroup_path); | |
463 | free(u->cgroup_path); | |
464 | } | |
465 | ||
ac155bb8 | 466 | free(u->description); |
49dbfa7b | 467 | strv_free(u->documentation); |
ac155bb8 | 468 | free(u->fragment_path); |
1b64d026 | 469 | free(u->source_path); |
ae7a7182 | 470 | strv_free(u->dropin_paths); |
ac155bb8 | 471 | free(u->instance); |
87f0e418 | 472 | |
ac155bb8 | 473 | set_free_free(u->names); |
87f0e418 | 474 | |
ac155bb8 | 475 | condition_free_list(u->conditions); |
52661efd | 476 | |
702a2d8f LP |
477 | unit_ref_unset(&u->slice); |
478 | ||
ac155bb8 MS |
479 | while (u->refs) |
480 | unit_ref_unset(u->refs); | |
57020a3a | 481 | |
87f0e418 LP |
482 | free(u); |
483 | } | |
484 | ||
485 | UnitActiveState unit_active_state(Unit *u) { | |
486 | assert(u); | |
487 | ||
ac155bb8 | 488 | if (u->load_state == UNIT_MERGED) |
6124958c LP |
489 | return unit_active_state(unit_follow_merge(u)); |
490 | ||
491 | /* After a reload it might happen that a unit is not correctly | |
492 | * loaded but still has a process around. That's why we won't | |
fdf20a31 | 493 | * shortcut failed loading to UNIT_INACTIVE_FAILED. */ |
87f0e418 LP |
494 | |
495 | return UNIT_VTABLE(u)->active_state(u); | |
496 | } | |
497 | ||
10a94420 LP |
498 | const char* unit_sub_state_to_string(Unit *u) { |
499 | assert(u); | |
500 | ||
501 | return UNIT_VTABLE(u)->sub_state_to_string(u); | |
502 | } | |
503 | ||
23a177ef LP |
504 | static void complete_move(Set **s, Set **other) { |
505 | assert(s); | |
506 | assert(other); | |
87f0e418 | 507 | |
23a177ef LP |
508 | if (!*other) |
509 | return; | |
87f0e418 LP |
510 | |
511 | if (*s) | |
23a177ef LP |
512 | set_move(*s, *other); |
513 | else { | |
514 | *s = *other; | |
515 | *other = NULL; | |
516 | } | |
517 | } | |
87f0e418 | 518 | |
23a177ef LP |
519 | static void merge_names(Unit *u, Unit *other) { |
520 | char *t; | |
521 | Iterator i; | |
87f0e418 | 522 | |
23a177ef LP |
523 | assert(u); |
524 | assert(other); | |
525 | ||
ac155bb8 | 526 | complete_move(&u->names, &other->names); |
23a177ef | 527 | |
ac155bb8 MS |
528 | set_free_free(other->names); |
529 | other->names = NULL; | |
530 | other->id = NULL; | |
23a177ef | 531 | |
ac155bb8 MS |
532 | SET_FOREACH(t, u->names, i) |
533 | assert_se(hashmap_replace(u->manager->units, t, u) == 0); | |
87f0e418 LP |
534 | } |
535 | ||
23a177ef LP |
536 | static void merge_dependencies(Unit *u, Unit *other, UnitDependency d) { |
537 | Iterator i; | |
538 | Unit *back; | |
87f0e418 | 539 | int r; |
23a177ef LP |
540 | |
541 | assert(u); | |
542 | assert(other); | |
543 | assert(d < _UNIT_DEPENDENCY_MAX); | |
544 | ||
83a95334 | 545 | /* Fix backwards pointers */ |
ac155bb8 | 546 | SET_FOREACH(back, other->dependencies[d], i) { |
23a177ef LP |
547 | UnitDependency k; |
548 | ||
549 | for (k = 0; k < _UNIT_DEPENDENCY_MAX; k++) | |
ac155bb8 | 550 | if ((r = set_remove_and_put(back->dependencies[k], other, u)) < 0) { |
23a177ef LP |
551 | |
552 | if (r == -EEXIST) | |
ac155bb8 | 553 | set_remove(back->dependencies[k], other); |
23a177ef LP |
554 | else |
555 | assert(r == -ENOENT); | |
556 | } | |
557 | } | |
558 | ||
ac155bb8 | 559 | complete_move(&u->dependencies[d], &other->dependencies[d]); |
23a177ef | 560 | |
ac155bb8 MS |
561 | set_free(other->dependencies[d]); |
562 | other->dependencies[d] = NULL; | |
23a177ef LP |
563 | } |
564 | ||
565 | int unit_merge(Unit *u, Unit *other) { | |
87f0e418 LP |
566 | UnitDependency d; |
567 | ||
568 | assert(u); | |
569 | assert(other); | |
ac155bb8 MS |
570 | assert(u->manager == other->manager); |
571 | assert(u->type != _UNIT_TYPE_INVALID); | |
87f0e418 | 572 | |
cc916967 LP |
573 | other = unit_follow_merge(other); |
574 | ||
23a177ef LP |
575 | if (other == u) |
576 | return 0; | |
577 | ||
ac155bb8 | 578 | if (u->type != other->type) |
9e2f7c11 LP |
579 | return -EINVAL; |
580 | ||
ac155bb8 | 581 | if (!u->instance != !other->instance) |
87f0e418 LP |
582 | return -EINVAL; |
583 | ||
ac155bb8 | 584 | if (other->load_state != UNIT_STUB && |
c2756a68 | 585 | other->load_state != UNIT_NOT_FOUND) |
23a177ef | 586 | return -EEXIST; |
87f0e418 | 587 | |
ac155bb8 | 588 | if (other->job) |
819e213f LP |
589 | return -EEXIST; |
590 | ||
e0209d83 MS |
591 | if (other->nop_job) |
592 | return -EEXIST; | |
593 | ||
fdf20a31 | 594 | if (!UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other))) |
819e213f LP |
595 | return -EEXIST; |
596 | ||
87f0e418 | 597 | /* Merge names */ |
23a177ef | 598 | merge_names(u, other); |
87f0e418 | 599 | |
57020a3a | 600 | /* Redirect all references */ |
ac155bb8 MS |
601 | while (other->refs) |
602 | unit_ref_set(other->refs, u); | |
57020a3a | 603 | |
87f0e418 LP |
604 | /* Merge dependencies */ |
605 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) | |
23a177ef | 606 | merge_dependencies(u, other, d); |
87f0e418 | 607 | |
ac155bb8 MS |
608 | other->load_state = UNIT_MERGED; |
609 | other->merged_into = u; | |
23a177ef | 610 | |
3616a49c LP |
611 | /* If there is still some data attached to the other node, we |
612 | * don't need it anymore, and can free it. */ | |
ac155bb8 | 613 | if (other->load_state != UNIT_STUB) |
3616a49c LP |
614 | if (UNIT_VTABLE(other)->done) |
615 | UNIT_VTABLE(other)->done(other); | |
616 | ||
617 | unit_add_to_dbus_queue(u); | |
23a177ef LP |
618 | unit_add_to_cleanup_queue(other); |
619 | ||
620 | return 0; | |
621 | } | |
622 | ||
623 | int unit_merge_by_name(Unit *u, const char *name) { | |
624 | Unit *other; | |
9e2f7c11 | 625 | int r; |
68eda4bd | 626 | _cleanup_free_ char *s = NULL; |
23a177ef LP |
627 | |
628 | assert(u); | |
629 | assert(name); | |
630 | ||
9e2f7c11 | 631 | if (unit_name_is_template(name)) { |
ac155bb8 | 632 | if (!u->instance) |
9e2f7c11 LP |
633 | return -EINVAL; |
634 | ||
ac155bb8 | 635 | if (!(s = unit_name_replace_instance(name, u->instance))) |
9e2f7c11 LP |
636 | return -ENOMEM; |
637 | ||
638 | name = s; | |
639 | } | |
640 | ||
c2756a68 LP |
641 | other = manager_get_unit(u->manager, name); |
642 | if (!other) | |
9e2f7c11 LP |
643 | r = unit_add_name(u, name); |
644 | else | |
645 | r = unit_merge(u, other); | |
23a177ef | 646 | |
9e2f7c11 | 647 | return r; |
23a177ef LP |
648 | } |
649 | ||
650 | Unit* unit_follow_merge(Unit *u) { | |
651 | assert(u); | |
652 | ||
ac155bb8 MS |
653 | while (u->load_state == UNIT_MERGED) |
654 | assert_se(u = u->merged_into); | |
23a177ef LP |
655 | |
656 | return u; | |
657 | } | |
658 | ||
659 | int unit_add_exec_dependencies(Unit *u, ExecContext *c) { | |
660 | int r; | |
661 | ||
662 | assert(u); | |
663 | assert(c); | |
664 | ||
ecc6e2b8 LP |
665 | if (c->std_output != EXEC_OUTPUT_KMSG && |
666 | c->std_output != EXEC_OUTPUT_SYSLOG && | |
706343f4 | 667 | c->std_output != EXEC_OUTPUT_JOURNAL && |
28dbc1e8 LP |
668 | c->std_output != EXEC_OUTPUT_KMSG_AND_CONSOLE && |
669 | c->std_output != EXEC_OUTPUT_SYSLOG_AND_CONSOLE && | |
706343f4 | 670 | c->std_output != EXEC_OUTPUT_JOURNAL_AND_CONSOLE && |
ecc6e2b8 | 671 | c->std_error != EXEC_OUTPUT_KMSG && |
085c98af | 672 | c->std_error != EXEC_OUTPUT_SYSLOG && |
706343f4 | 673 | c->std_error != EXEC_OUTPUT_JOURNAL && |
085c98af | 674 | c->std_error != EXEC_OUTPUT_KMSG_AND_CONSOLE && |
706343f4 | 675 | c->std_error != EXEC_OUTPUT_JOURNAL_AND_CONSOLE && |
28dbc1e8 | 676 | c->std_error != EXEC_OUTPUT_SYSLOG_AND_CONSOLE) |
23a177ef LP |
677 | return 0; |
678 | ||
679 | /* If syslog or kernel logging is requested, make sure our own | |
680 | * logging daemon is run first. */ | |
681 | ||
9d246da3 MS |
682 | if (u->manager->running_as == SYSTEMD_SYSTEM) { |
683 | r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_JOURNALD_SOCKET, NULL, true); | |
684 | if (r < 0) | |
23a177ef | 685 | return r; |
9d246da3 | 686 | } |
23a177ef | 687 | |
87f0e418 LP |
688 | return 0; |
689 | } | |
690 | ||
87f0e418 LP |
691 | const char *unit_description(Unit *u) { |
692 | assert(u); | |
693 | ||
ac155bb8 MS |
694 | if (u->description) |
695 | return u->description; | |
87f0e418 | 696 | |
ac155bb8 | 697 | return strna(u->id); |
87f0e418 LP |
698 | } |
699 | ||
700 | void unit_dump(Unit *u, FILE *f, const char *prefix) { | |
49dbfa7b | 701 | char *t, **j; |
87f0e418 LP |
702 | UnitDependency d; |
703 | Iterator i; | |
68eda4bd | 704 | _cleanup_free_ char *p2 = NULL; |
47be870b | 705 | const char *prefix2; |
173e3821 LP |
706 | char |
707 | timestamp1[FORMAT_TIMESTAMP_MAX], | |
708 | timestamp2[FORMAT_TIMESTAMP_MAX], | |
709 | timestamp3[FORMAT_TIMESTAMP_MAX], | |
faf919f1 LP |
710 | timestamp4[FORMAT_TIMESTAMP_MAX], |
711 | timespan[FORMAT_TIMESPAN_MAX]; | |
a7f241db | 712 | Unit *following; |
87f0e418 LP |
713 | |
714 | assert(u); | |
ac155bb8 | 715 | assert(u->type >= 0); |
87f0e418 LP |
716 | |
717 | if (!prefix) | |
718 | prefix = ""; | |
47be870b LP |
719 | p2 = strappend(prefix, "\t"); |
720 | prefix2 = p2 ? p2 : prefix; | |
87f0e418 LP |
721 | |
722 | fprintf(f, | |
40d50879 | 723 | "%s-> Unit %s:\n" |
87f0e418 | 724 | "%s\tDescription: %s\n" |
9e2f7c11 | 725 | "%s\tInstance: %s\n" |
87f0e418 | 726 | "%s\tUnit Load State: %s\n" |
2fad8195 | 727 | "%s\tUnit Active State: %s\n" |
173e3821 | 728 | "%s\tInactive Exit Timestamp: %s\n" |
2fad8195 | 729 | "%s\tActive Enter Timestamp: %s\n" |
701cc384 | 730 | "%s\tActive Exit Timestamp: %s\n" |
173e3821 | 731 | "%s\tInactive Enter Timestamp: %s\n" |
45fb0699 | 732 | "%s\tGC Check Good: %s\n" |
9444b1f2 | 733 | "%s\tNeed Daemon Reload: %s\n" |
c2756a68 | 734 | "%s\tTransient: %s\n" |
4ad49000 LP |
735 | "%s\tSlice: %s\n" |
736 | "%s\tCGroup: %s\n" | |
737 | "%s\tCGroup realized: %s\n" | |
738 | "%s\tCGroup mask: 0x%x\n", | |
ac155bb8 | 739 | prefix, u->id, |
87f0e418 | 740 | prefix, unit_description(u), |
ac155bb8 MS |
741 | prefix, strna(u->instance), |
742 | prefix, unit_load_state_to_string(u->load_state), | |
2fad8195 | 743 | prefix, unit_active_state_to_string(unit_active_state(u)), |
ac155bb8 MS |
744 | prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->inactive_exit_timestamp.realtime)), |
745 | prefix, strna(format_timestamp(timestamp2, sizeof(timestamp2), u->active_enter_timestamp.realtime)), | |
746 | prefix, strna(format_timestamp(timestamp3, sizeof(timestamp3), u->active_exit_timestamp.realtime)), | |
747 | prefix, strna(format_timestamp(timestamp4, sizeof(timestamp4), u->inactive_enter_timestamp.realtime)), | |
45fb0699 | 748 | prefix, yes_no(unit_check_gc(u)), |
9444b1f2 | 749 | prefix, yes_no(unit_need_daemon_reload(u)), |
c2756a68 | 750 | prefix, yes_no(u->transient), |
4ad49000 LP |
751 | prefix, strna(unit_slice_name(u)), |
752 | prefix, strna(u->cgroup_path), | |
753 | prefix, yes_no(u->cgroup_realized), | |
754 | prefix, u->cgroup_mask); | |
0301abf4 | 755 | |
ac155bb8 | 756 | SET_FOREACH(t, u->names, i) |
87f0e418 LP |
757 | fprintf(f, "%s\tName: %s\n", prefix, t); |
758 | ||
49dbfa7b LP |
759 | STRV_FOREACH(j, u->documentation) |
760 | fprintf(f, "%s\tDocumentation: %s\n", prefix, *j); | |
761 | ||
a7f241db | 762 | if ((following = unit_following(u))) |
ac155bb8 | 763 | fprintf(f, "%s\tFollowing: %s\n", prefix, following->id); |
8fe914ec | 764 | |
ac155bb8 MS |
765 | if (u->fragment_path) |
766 | fprintf(f, "%s\tFragment Path: %s\n", prefix, u->fragment_path); | |
23a177ef | 767 | |
1b64d026 LP |
768 | if (u->source_path) |
769 | fprintf(f, "%s\tSource Path: %s\n", prefix, u->source_path); | |
770 | ||
ae7a7182 | 771 | STRV_FOREACH(j, u->dropin_paths) |
2875e22b | 772 | fprintf(f, "%s\tDropIn Path: %s\n", prefix, *j); |
ae7a7182 | 773 | |
ac155bb8 | 774 | if (u->job_timeout > 0) |
2fa4092c | 775 | fprintf(f, "%s\tJob Timeout: %s\n", prefix, format_timespan(timespan, sizeof(timespan), u->job_timeout, 0)); |
faf919f1 | 776 | |
ac155bb8 | 777 | condition_dump_list(u->conditions, f, prefix); |
52661efd | 778 | |
ac155bb8 | 779 | if (dual_timestamp_is_set(&u->condition_timestamp)) |
2791a8f8 LP |
780 | fprintf(f, |
781 | "%s\tCondition Timestamp: %s\n" | |
782 | "%s\tCondition Result: %s\n", | |
ac155bb8 MS |
783 | prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->condition_timestamp.realtime)), |
784 | prefix, yes_no(u->condition_result)); | |
2791a8f8 | 785 | |
87f0e418 LP |
786 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) { |
787 | Unit *other; | |
788 | ||
ac155bb8 MS |
789 | SET_FOREACH(other, u->dependencies[d], i) |
790 | fprintf(f, "%s\t%s: %s\n", prefix, unit_dependency_to_string(d), other->id); | |
87f0e418 LP |
791 | } |
792 | ||
7c8fa05c | 793 | if (!strv_isempty(u->requires_mounts_for)) { |
7c8fa05c LP |
794 | fprintf(f, |
795 | "%s\tRequiresMountsFor:", prefix); | |
796 | ||
797 | STRV_FOREACH(j, u->requires_mounts_for) | |
798 | fprintf(f, " %s", *j); | |
799 | ||
800 | fputs("\n", f); | |
801 | } | |
802 | ||
ac155bb8 | 803 | if (u->load_state == UNIT_LOADED) { |
ab1f0633 | 804 | |
b0650475 | 805 | fprintf(f, |
a40eb732 | 806 | "%s\tStopWhenUnneeded: %s\n" |
b5e9dba8 LP |
807 | "%s\tRefuseManualStart: %s\n" |
808 | "%s\tRefuseManualStop: %s\n" | |
222ae6a8 | 809 | "%s\tDefaultDependencies: %s\n" |
c8f4d764 | 810 | "%s\tOnFailureIsolate: %s\n" |
7a6000a6 LP |
811 | "%s\tIgnoreOnIsolate: %s\n" |
812 | "%s\tIgnoreOnSnapshot: %s\n", | |
ac155bb8 MS |
813 | prefix, yes_no(u->stop_when_unneeded), |
814 | prefix, yes_no(u->refuse_manual_start), | |
815 | prefix, yes_no(u->refuse_manual_stop), | |
816 | prefix, yes_no(u->default_dependencies), | |
817 | prefix, yes_no(u->on_failure_isolate), | |
818 | prefix, yes_no(u->ignore_on_isolate), | |
819 | prefix, yes_no(u->ignore_on_snapshot)); | |
820 | ||
23a177ef LP |
821 | if (UNIT_VTABLE(u)->dump) |
822 | UNIT_VTABLE(u)->dump(u, f, prefix2); | |
b0650475 | 823 | |
ac155bb8 | 824 | } else if (u->load_state == UNIT_MERGED) |
b0650475 LP |
825 | fprintf(f, |
826 | "%s\tMerged into: %s\n", | |
ac155bb8 MS |
827 | prefix, u->merged_into->id); |
828 | else if (u->load_state == UNIT_ERROR) | |
829 | fprintf(f, "%s\tLoad Error Code: %s\n", prefix, strerror(-u->load_error)); | |
8821a00f | 830 | |
87f0e418 | 831 | |
ac155bb8 MS |
832 | if (u->job) |
833 | job_dump(u->job, f, prefix2); | |
87f0e418 | 834 | |
e0209d83 MS |
835 | if (u->nop_job) |
836 | job_dump(u->nop_job, f, prefix2); | |
837 | ||
87f0e418 LP |
838 | } |
839 | ||
840 | /* Common implementation for multiple backends */ | |
e537352b | 841 | int unit_load_fragment_and_dropin(Unit *u) { |
23a177ef LP |
842 | int r; |
843 | ||
844 | assert(u); | |
23a177ef LP |
845 | |
846 | /* Load a .service file */ | |
4ad49000 LP |
847 | r = unit_load_fragment(u); |
848 | if (r < 0) | |
23a177ef LP |
849 | return r; |
850 | ||
ac155bb8 | 851 | if (u->load_state == UNIT_STUB) |
23a177ef LP |
852 | return -ENOENT; |
853 | ||
854 | /* Load drop-in directory data */ | |
4ad49000 LP |
855 | r = unit_load_dropin(unit_follow_merge(u)); |
856 | if (r < 0) | |
23a177ef LP |
857 | return r; |
858 | ||
859 | return 0; | |
860 | } | |
861 | ||
862 | /* Common implementation for multiple backends */ | |
e537352b | 863 | int unit_load_fragment_and_dropin_optional(Unit *u) { |
23a177ef | 864 | int r; |
87f0e418 LP |
865 | |
866 | assert(u); | |
867 | ||
23a177ef LP |
868 | /* Same as unit_load_fragment_and_dropin(), but whether |
869 | * something can be loaded or not doesn't matter. */ | |
870 | ||
871 | /* Load a .service file */ | |
4ad49000 LP |
872 | r = unit_load_fragment(u); |
873 | if (r < 0) | |
87f0e418 LP |
874 | return r; |
875 | ||
ac155bb8 MS |
876 | if (u->load_state == UNIT_STUB) |
877 | u->load_state = UNIT_LOADED; | |
d46de8a1 | 878 | |
87f0e418 | 879 | /* Load drop-in directory data */ |
4ad49000 LP |
880 | r = unit_load_dropin(unit_follow_merge(u)); |
881 | if (r < 0) | |
87f0e418 LP |
882 | return r; |
883 | ||
23a177ef | 884 | return 0; |
87f0e418 LP |
885 | } |
886 | ||
bba34eed | 887 | int unit_add_default_target_dependency(Unit *u, Unit *target) { |
98bc2000 LP |
888 | assert(u); |
889 | assert(target); | |
890 | ||
ac155bb8 | 891 | if (target->type != UNIT_TARGET) |
98bc2000 LP |
892 | return 0; |
893 | ||
35b8ca3a | 894 | /* Only add the dependency if both units are loaded, so that |
bba34eed | 895 | * that loop check below is reliable */ |
ac155bb8 MS |
896 | if (u->load_state != UNIT_LOADED || |
897 | target->load_state != UNIT_LOADED) | |
bba34eed LP |
898 | return 0; |
899 | ||
21256a2b LP |
900 | /* If either side wants no automatic dependencies, then let's |
901 | * skip this */ | |
ac155bb8 MS |
902 | if (!u->default_dependencies || |
903 | !target->default_dependencies) | |
21256a2b LP |
904 | return 0; |
905 | ||
98bc2000 | 906 | /* Don't create loops */ |
ac155bb8 | 907 | if (set_get(target->dependencies[UNIT_BEFORE], u)) |
98bc2000 LP |
908 | return 0; |
909 | ||
910 | return unit_add_dependency(target, UNIT_AFTER, u, true); | |
911 | } | |
912 | ||
913 | static int unit_add_default_dependencies(Unit *u) { | |
a016b922 | 914 | |
21256a2b LP |
915 | static const UnitDependency deps[] = { |
916 | UNIT_REQUIRED_BY, | |
917 | UNIT_REQUIRED_BY_OVERRIDABLE, | |
918 | UNIT_WANTED_BY, | |
919 | UNIT_BOUND_BY | |
920 | }; | |
921 | ||
bba34eed | 922 | Unit *target; |
98bc2000 LP |
923 | Iterator i; |
924 | int r; | |
21256a2b | 925 | unsigned k; |
98bc2000 LP |
926 | |
927 | assert(u); | |
928 | ||
21256a2b | 929 | for (k = 0; k < ELEMENTSOF(deps); k++) |
a016b922 LP |
930 | SET_FOREACH(target, u->dependencies[deps[k]], i) { |
931 | r = unit_add_default_target_dependency(u, target); | |
932 | if (r < 0) | |
21256a2b | 933 | return r; |
a016b922 LP |
934 | } |
935 | ||
4ad49000 LP |
936 | if (u->default_dependencies && unit_get_cgroup_context(u)) { |
937 | if (UNIT_ISSET(u->slice)) | |
938 | r = unit_add_two_dependencies(u, UNIT_AFTER, UNIT_WANTS, UNIT_DEREF(u->slice), true); | |
939 | else | |
940 | r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_WANTS, SPECIAL_ROOT_SLICE, NULL, true); | |
941 | ||
a016b922 LP |
942 | if (r < 0) |
943 | return r; | |
944 | } | |
b81884e7 | 945 | |
98bc2000 LP |
946 | return 0; |
947 | } | |
948 | ||
87f0e418 LP |
949 | int unit_load(Unit *u) { |
950 | int r; | |
951 | ||
952 | assert(u); | |
953 | ||
ac155bb8 MS |
954 | if (u->in_load_queue) { |
955 | LIST_REMOVE(Unit, load_queue, u->manager->load_queue, u); | |
956 | u->in_load_queue = false; | |
87f0e418 LP |
957 | } |
958 | ||
ac155bb8 | 959 | if (u->type == _UNIT_TYPE_INVALID) |
e537352b LP |
960 | return -EINVAL; |
961 | ||
ac155bb8 | 962 | if (u->load_state != UNIT_STUB) |
87f0e418 LP |
963 | return 0; |
964 | ||
c2756a68 LP |
965 | if (UNIT_VTABLE(u)->load) { |
966 | r = UNIT_VTABLE(u)->load(u); | |
967 | if (r < 0) | |
87f0e418 | 968 | goto fail; |
c2756a68 | 969 | } |
23a177ef | 970 | |
ac155bb8 | 971 | if (u->load_state == UNIT_STUB) { |
23a177ef LP |
972 | r = -ENOENT; |
973 | goto fail; | |
974 | } | |
975 | ||
7c8fa05c | 976 | if (u->load_state == UNIT_LOADED) { |
c2756a68 LP |
977 | |
978 | if (u->default_dependencies) { | |
979 | r = unit_add_default_dependencies(u); | |
980 | if (r < 0) | |
981 | goto fail; | |
982 | } | |
983 | ||
7c8fa05c LP |
984 | r = unit_add_mount_links(u); |
985 | if (r < 0) | |
c2756a68 | 986 | goto fail; |
7c8fa05c | 987 | |
c2756a68 LP |
988 | if (u->on_failure_isolate && |
989 | set_size(u->dependencies[UNIT_ON_FAILURE]) > 1) { | |
f68319bb | 990 | |
c2756a68 LP |
991 | log_error_unit(u->id, |
992 | "More than one OnFailure= dependencies specified for %s but OnFailureIsolate= enabled. Refusing.", u->id); | |
f68319bb | 993 | |
c2756a68 LP |
994 | r = -EINVAL; |
995 | goto fail; | |
996 | } | |
f68319bb LP |
997 | } |
998 | ||
ac155bb8 | 999 | assert((u->load_state != UNIT_MERGED) == !u->merged_into); |
23a177ef LP |
1000 | |
1001 | unit_add_to_dbus_queue(unit_follow_merge(u)); | |
701cc384 | 1002 | unit_add_to_gc_queue(u); |
87f0e418 | 1003 | |
87f0e418 LP |
1004 | return 0; |
1005 | ||
1006 | fail: | |
c2756a68 | 1007 | u->load_state = u->load_state == UNIT_STUB ? UNIT_NOT_FOUND : UNIT_ERROR; |
ac155bb8 | 1008 | u->load_error = r; |
c1e1601e | 1009 | unit_add_to_dbus_queue(u); |
9a46fc3b | 1010 | unit_add_to_gc_queue(u); |
23a177ef | 1011 | |
c1b6628d ZJS |
1012 | log_debug_unit(u->id, "Failed to load configuration for %s: %s", |
1013 | u->id, strerror(-r)); | |
23a177ef | 1014 | |
87f0e418 LP |
1015 | return r; |
1016 | } | |
1017 | ||
90bbc946 LP |
1018 | bool unit_condition_test(Unit *u) { |
1019 | assert(u); | |
1020 | ||
ac155bb8 | 1021 | dual_timestamp_get(&u->condition_timestamp); |
4b744dfa | 1022 | u->condition_result = condition_test_list(u->id, u->conditions); |
90bbc946 | 1023 | |
ac155bb8 | 1024 | return u->condition_result; |
90bbc946 LP |
1025 | } |
1026 | ||
44a6b1b6 | 1027 | _pure_ static const char* unit_get_status_message_format(Unit *u, JobType t) { |
c6918296 | 1028 | const UnitStatusMessageFormats *format_table; |
877d54e9 LP |
1029 | |
1030 | assert(u); | |
1031 | assert(t >= 0); | |
1032 | assert(t < _JOB_TYPE_MAX); | |
1033 | ||
1034 | if (t != JOB_START && t != JOB_STOP) | |
1035 | return NULL; | |
c6918296 MS |
1036 | |
1037 | format_table = &UNIT_VTABLE(u)->status_message_formats; | |
1038 | if (!format_table) | |
877d54e9 LP |
1039 | return NULL; |
1040 | ||
1041 | return format_table->starting_stopping[t == JOB_STOP]; | |
1042 | } | |
1043 | ||
44a6b1b6 | 1044 | _pure_ static const char *unit_get_status_message_format_try_harder(Unit *u, JobType t) { |
877d54e9 LP |
1045 | const char *format; |
1046 | ||
1047 | assert(u); | |
1048 | assert(t >= 0); | |
1049 | assert(t < _JOB_TYPE_MAX); | |
1050 | ||
1051 | format = unit_get_status_message_format(u, t); | |
1052 | if (format) | |
1053 | return format; | |
1054 | ||
1055 | /* Return generic strings */ | |
1056 | if (t == JOB_START) | |
1057 | return "Starting %s."; | |
1058 | else if (t == JOB_STOP) | |
1059 | return "Stopping %s."; | |
1060 | else if (t == JOB_RELOAD) | |
1061 | return "Reloading %s."; | |
1062 | ||
1063 | return NULL; | |
1064 | } | |
1065 | ||
1066 | static void unit_status_print_starting_stopping(Unit *u, JobType t) { | |
1067 | const char *format; | |
1068 | ||
1069 | assert(u); | |
1070 | ||
1071 | /* We only print status messages for selected units on | |
1072 | * selected operations. */ | |
c6918296 | 1073 | |
877d54e9 | 1074 | format = unit_get_status_message_format(u, t); |
c6918296 MS |
1075 | if (!format) |
1076 | return; | |
1077 | ||
49b1d377 | 1078 | unit_status_printf(u, "", format); |
c6918296 MS |
1079 | } |
1080 | ||
877d54e9 LP |
1081 | #pragma GCC diagnostic push |
1082 | #pragma GCC diagnostic ignored "-Wformat-nonliteral" | |
1083 | static void unit_status_log_starting_stopping_reloading(Unit *u, JobType t) { | |
1084 | const char *format; | |
1085 | char buf[LINE_MAX]; | |
1086 | sd_id128_t mid; | |
1087 | ||
1088 | assert(u); | |
1089 | ||
1090 | if (t != JOB_START && t != JOB_STOP && t != JOB_RELOAD) | |
1091 | return; | |
1092 | ||
81270860 LP |
1093 | if (log_on_console()) |
1094 | return; | |
1095 | ||
877d54e9 LP |
1096 | /* We log status messages for all units and all operations. */ |
1097 | ||
1098 | format = unit_get_status_message_format_try_harder(u, t); | |
1099 | if (!format) | |
1100 | return; | |
1101 | ||
1102 | snprintf(buf, sizeof(buf), format, unit_description(u)); | |
1103 | char_array_0(buf); | |
1104 | ||
1105 | mid = t == JOB_START ? SD_MESSAGE_UNIT_STARTING : | |
1106 | t == JOB_STOP ? SD_MESSAGE_UNIT_STOPPING : | |
1107 | SD_MESSAGE_UNIT_RELOADING; | |
1108 | ||
bbc9006e | 1109 | log_struct_unit(LOG_INFO, |
c1b6628d ZJS |
1110 | u->id, |
1111 | MESSAGE_ID(mid), | |
1112 | "MESSAGE=%s", buf, | |
1113 | NULL); | |
877d54e9 LP |
1114 | } |
1115 | #pragma GCC diagnostic pop | |
1116 | ||
87f0e418 | 1117 | /* Errors: |
d5159713 LP |
1118 | * -EBADR: This unit type does not support starting. |
1119 | * -EALREADY: Unit is already started. | |
1120 | * -EAGAIN: An operation is already in progress. Retry later. | |
1121 | * -ECANCELED: Too many requests for now. | |
87f0e418 LP |
1122 | */ |
1123 | int unit_start(Unit *u) { | |
1124 | UnitActiveState state; | |
92ab323c | 1125 | Unit *following; |
87f0e418 LP |
1126 | |
1127 | assert(u); | |
1128 | ||
ac155bb8 | 1129 | if (u->load_state != UNIT_LOADED) |
6124958c LP |
1130 | return -EINVAL; |
1131 | ||
a82e5507 LP |
1132 | /* If this is already started, then this will succeed. Note |
1133 | * that this will even succeed if this unit is not startable | |
1134 | * by the user. This is relied on to detect when we need to | |
1135 | * wait for units and when waiting is finished. */ | |
87f0e418 LP |
1136 | state = unit_active_state(u); |
1137 | if (UNIT_IS_ACTIVE_OR_RELOADING(state)) | |
1138 | return -EALREADY; | |
1139 | ||
a82e5507 LP |
1140 | /* If the conditions failed, don't do anything at all. If we |
1141 | * already are activating this call might still be useful to | |
1142 | * speed up activation in case there is some hold-off time, | |
1143 | * but we don't want to recheck the condition in that case. */ | |
1144 | if (state != UNIT_ACTIVATING && | |
1145 | !unit_condition_test(u)) { | |
c1b6628d | 1146 | log_debug_unit(u->id, "Starting of %s requested but condition failed. Ignoring.", u->id); |
52661efd LP |
1147 | return -EALREADY; |
1148 | } | |
1149 | ||
92ab323c | 1150 | /* Forward to the main object, if we aren't it. */ |
52990c2e ZJS |
1151 | following = unit_following(u); |
1152 | if (following) { | |
c1b6628d ZJS |
1153 | log_debug_unit(u->id, "Redirecting start request from %s to %s.", |
1154 | u->id, following->id); | |
92ab323c LP |
1155 | return unit_start(following); |
1156 | } | |
1157 | ||
877d54e9 LP |
1158 | unit_status_log_starting_stopping_reloading(u, JOB_START); |
1159 | unit_status_print_starting_stopping(u, JOB_START); | |
c6918296 | 1160 | |
92ab323c LP |
1161 | /* If it is stopped, but we cannot start it, then fail */ |
1162 | if (!UNIT_VTABLE(u)->start) | |
1163 | return -EBADR; | |
1164 | ||
87f0e418 LP |
1165 | /* We don't suppress calls to ->start() here when we are |
1166 | * already starting, to allow this request to be used as a | |
1167 | * "hurry up" call, for example when the unit is in some "auto | |
1168 | * restart" state where it waits for a holdoff timer to elapse | |
1169 | * before it will start again. */ | |
1170 | ||
c1e1601e | 1171 | unit_add_to_dbus_queue(u); |
9e58ff9c | 1172 | |
87f0e418 LP |
1173 | return UNIT_VTABLE(u)->start(u); |
1174 | } | |
1175 | ||
1176 | bool unit_can_start(Unit *u) { | |
1177 | assert(u); | |
1178 | ||
1179 | return !!UNIT_VTABLE(u)->start; | |
1180 | } | |
1181 | ||
2528a7a6 LP |
1182 | bool unit_can_isolate(Unit *u) { |
1183 | assert(u); | |
1184 | ||
1185 | return unit_can_start(u) && | |
ac155bb8 | 1186 | u->allow_isolate; |
2528a7a6 LP |
1187 | } |
1188 | ||
87f0e418 LP |
1189 | /* Errors: |
1190 | * -EBADR: This unit type does not support stopping. | |
1191 | * -EALREADY: Unit is already stopped. | |
1192 | * -EAGAIN: An operation is already in progress. Retry later. | |
1193 | */ | |
1194 | int unit_stop(Unit *u) { | |
1195 | UnitActiveState state; | |
92ab323c | 1196 | Unit *following; |
87f0e418 LP |
1197 | |
1198 | assert(u); | |
1199 | ||
87f0e418 | 1200 | state = unit_active_state(u); |
fdf20a31 | 1201 | if (UNIT_IS_INACTIVE_OR_FAILED(state)) |
87f0e418 LP |
1202 | return -EALREADY; |
1203 | ||
92ab323c | 1204 | if ((following = unit_following(u))) { |
c1b6628d ZJS |
1205 | log_debug_unit(u->id, "Redirecting stop request from %s to %s.", |
1206 | u->id, following->id); | |
92ab323c LP |
1207 | return unit_stop(following); |
1208 | } | |
1209 | ||
877d54e9 LP |
1210 | unit_status_log_starting_stopping_reloading(u, JOB_STOP); |
1211 | unit_status_print_starting_stopping(u, JOB_STOP); | |
c6918296 | 1212 | |
7898b0cf LP |
1213 | if (!UNIT_VTABLE(u)->stop) |
1214 | return -EBADR; | |
1215 | ||
c1e1601e | 1216 | unit_add_to_dbus_queue(u); |
9e58ff9c | 1217 | |
87f0e418 LP |
1218 | return UNIT_VTABLE(u)->stop(u); |
1219 | } | |
1220 | ||
1221 | /* Errors: | |
1222 | * -EBADR: This unit type does not support reloading. | |
1223 | * -ENOEXEC: Unit is not started. | |
1224 | * -EAGAIN: An operation is already in progress. Retry later. | |
1225 | */ | |
1226 | int unit_reload(Unit *u) { | |
1227 | UnitActiveState state; | |
92ab323c | 1228 | Unit *following; |
87f0e418 LP |
1229 | |
1230 | assert(u); | |
1231 | ||
ac155bb8 | 1232 | if (u->load_state != UNIT_LOADED) |
6124958c LP |
1233 | return -EINVAL; |
1234 | ||
87f0e418 LP |
1235 | if (!unit_can_reload(u)) |
1236 | return -EBADR; | |
1237 | ||
1238 | state = unit_active_state(u); | |
e364ad06 | 1239 | if (state == UNIT_RELOADING) |
87f0e418 LP |
1240 | return -EALREADY; |
1241 | ||
e364ad06 | 1242 | if (state != UNIT_ACTIVE) |
87f0e418 LP |
1243 | return -ENOEXEC; |
1244 | ||
92ab323c | 1245 | if ((following = unit_following(u))) { |
c1b6628d ZJS |
1246 | log_debug_unit(u->id, "Redirecting reload request from %s to %s.", |
1247 | u->id, following->id); | |
92ab323c LP |
1248 | return unit_reload(following); |
1249 | } | |
1250 | ||
877d54e9 LP |
1251 | unit_status_log_starting_stopping_reloading(u, JOB_RELOAD); |
1252 | ||
c1e1601e | 1253 | unit_add_to_dbus_queue(u); |
87f0e418 LP |
1254 | return UNIT_VTABLE(u)->reload(u); |
1255 | } | |
1256 | ||
1257 | bool unit_can_reload(Unit *u) { | |
1258 | assert(u); | |
1259 | ||
1260 | if (!UNIT_VTABLE(u)->reload) | |
1261 | return false; | |
1262 | ||
1263 | if (!UNIT_VTABLE(u)->can_reload) | |
1264 | return true; | |
1265 | ||
1266 | return UNIT_VTABLE(u)->can_reload(u); | |
1267 | } | |
1268 | ||
b4a16b7b | 1269 | static void unit_check_unneeded(Unit *u) { |
f3bff0eb LP |
1270 | Iterator i; |
1271 | Unit *other; | |
1272 | ||
1273 | assert(u); | |
1274 | ||
1275 | /* If this service shall be shut down when unneeded then do | |
1276 | * so. */ | |
1277 | ||
ac155bb8 | 1278 | if (!u->stop_when_unneeded) |
f3bff0eb LP |
1279 | return; |
1280 | ||
1281 | if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) | |
1282 | return; | |
1283 | ||
ac155bb8 | 1284 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRED_BY], i) |
31afa0a4 | 1285 | if (unit_active_or_pending(other)) |
f3bff0eb LP |
1286 | return; |
1287 | ||
ac155bb8 | 1288 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRED_BY_OVERRIDABLE], i) |
31afa0a4 | 1289 | if (unit_active_or_pending(other)) |
f3bff0eb LP |
1290 | return; |
1291 | ||
ac155bb8 | 1292 | SET_FOREACH(other, u->dependencies[UNIT_WANTED_BY], i) |
31afa0a4 | 1293 | if (unit_active_or_pending(other)) |
f3bff0eb LP |
1294 | return; |
1295 | ||
ac155bb8 | 1296 | SET_FOREACH(other, u->dependencies[UNIT_BOUND_BY], i) |
31afa0a4 | 1297 | if (unit_active_or_pending(other)) |
b81884e7 LP |
1298 | return; |
1299 | ||
c1b6628d | 1300 | log_info_unit(u->id, "Service %s is not needed anymore. Stopping.", u->id); |
f3bff0eb LP |
1301 | |
1302 | /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */ | |
ac155bb8 | 1303 | manager_add_job(u->manager, JOB_STOP, u, JOB_FAIL, true, NULL, NULL); |
f3bff0eb LP |
1304 | } |
1305 | ||
87f0e418 LP |
1306 | static void retroactively_start_dependencies(Unit *u) { |
1307 | Iterator i; | |
1308 | Unit *other; | |
1309 | ||
1310 | assert(u); | |
1311 | assert(UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))); | |
1312 | ||
ac155bb8 MS |
1313 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRES], i) |
1314 | if (!set_get(u->dependencies[UNIT_AFTER], other) && | |
b81884e7 | 1315 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
ac155bb8 | 1316 | manager_add_job(u->manager, JOB_START, other, JOB_REPLACE, true, NULL, NULL); |
b81884e7 | 1317 | |
7f2cddae | 1318 | SET_FOREACH(other, u->dependencies[UNIT_BINDS_TO], i) |
ac155bb8 | 1319 | if (!set_get(u->dependencies[UNIT_AFTER], other) && |
b81884e7 | 1320 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
ac155bb8 | 1321 | manager_add_job(u->manager, JOB_START, other, JOB_REPLACE, true, NULL, NULL); |
87f0e418 | 1322 | |
ac155bb8 MS |
1323 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRES_OVERRIDABLE], i) |
1324 | if (!set_get(u->dependencies[UNIT_AFTER], other) && | |
b81884e7 | 1325 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
ac155bb8 | 1326 | manager_add_job(u->manager, JOB_START, other, JOB_FAIL, false, NULL, NULL); |
87f0e418 | 1327 | |
ac155bb8 MS |
1328 | SET_FOREACH(other, u->dependencies[UNIT_WANTS], i) |
1329 | if (!set_get(u->dependencies[UNIT_AFTER], other) && | |
b81884e7 | 1330 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
ac155bb8 | 1331 | manager_add_job(u->manager, JOB_START, other, JOB_FAIL, false, NULL, NULL); |
87f0e418 | 1332 | |
ac155bb8 | 1333 | SET_FOREACH(other, u->dependencies[UNIT_CONFLICTS], i) |
b81884e7 | 1334 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
ac155bb8 | 1335 | manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL); |
69dd2852 | 1336 | |
ac155bb8 | 1337 | SET_FOREACH(other, u->dependencies[UNIT_CONFLICTED_BY], i) |
b81884e7 | 1338 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
ac155bb8 | 1339 | manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL); |
87f0e418 LP |
1340 | } |
1341 | ||
1342 | static void retroactively_stop_dependencies(Unit *u) { | |
1343 | Iterator i; | |
1344 | Unit *other; | |
1345 | ||
1346 | assert(u); | |
1347 | assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))); | |
1348 | ||
b81884e7 | 1349 | /* Pull down units which are bound to us recursively if enabled */ |
ac155bb8 | 1350 | SET_FOREACH(other, u->dependencies[UNIT_BOUND_BY], i) |
b81884e7 | 1351 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
ac155bb8 | 1352 | manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL); |
cd0504d0 MS |
1353 | } |
1354 | ||
1355 | static void check_unneeded_dependencies(Unit *u) { | |
1356 | Iterator i; | |
1357 | Unit *other; | |
1358 | ||
1359 | assert(u); | |
1360 | assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))); | |
f3bff0eb LP |
1361 | |
1362 | /* Garbage collect services that might not be needed anymore, if enabled */ | |
ac155bb8 | 1363 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRES], i) |
87f0e418 | 1364 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1365 | unit_check_unneeded(other); |
ac155bb8 | 1366 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRES_OVERRIDABLE], i) |
f3bff0eb | 1367 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1368 | unit_check_unneeded(other); |
ac155bb8 | 1369 | SET_FOREACH(other, u->dependencies[UNIT_WANTS], i) |
f3bff0eb | 1370 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1371 | unit_check_unneeded(other); |
ac155bb8 | 1372 | SET_FOREACH(other, u->dependencies[UNIT_REQUISITE], i) |
f3bff0eb | 1373 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1374 | unit_check_unneeded(other); |
ac155bb8 | 1375 | SET_FOREACH(other, u->dependencies[UNIT_REQUISITE_OVERRIDABLE], i) |
f3bff0eb | 1376 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1377 | unit_check_unneeded(other); |
7f2cddae | 1378 | SET_FOREACH(other, u->dependencies[UNIT_BINDS_TO], i) |
b81884e7 LP |
1379 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
1380 | unit_check_unneeded(other); | |
87f0e418 LP |
1381 | } |
1382 | ||
3ecaa09b | 1383 | void unit_start_on_failure(Unit *u) { |
c0daa706 LP |
1384 | Unit *other; |
1385 | Iterator i; | |
1386 | ||
1387 | assert(u); | |
1388 | ||
ac155bb8 | 1389 | if (set_size(u->dependencies[UNIT_ON_FAILURE]) <= 0) |
222ae6a8 LP |
1390 | return; |
1391 | ||
c1b6628d | 1392 | log_info_unit(u->id, "Triggering OnFailure= dependencies of %s.", u->id); |
222ae6a8 | 1393 | |
ac155bb8 | 1394 | SET_FOREACH(other, u->dependencies[UNIT_ON_FAILURE], i) { |
222ae6a8 LP |
1395 | int r; |
1396 | ||
c1b6628d ZJS |
1397 | r = manager_add_job(u->manager, JOB_START, other, u->on_failure_isolate ? JOB_ISOLATE : JOB_REPLACE, true, NULL, NULL); |
1398 | if (r < 0) | |
1399 | log_error_unit(u->id, "Failed to enqueue OnFailure= job: %s", strerror(-r)); | |
222ae6a8 | 1400 | } |
c0daa706 LP |
1401 | } |
1402 | ||
3ecaa09b LP |
1403 | void unit_trigger_notify(Unit *u) { |
1404 | Unit *other; | |
1405 | Iterator i; | |
1406 | ||
1407 | assert(u); | |
1408 | ||
1409 | SET_FOREACH(other, u->dependencies[UNIT_TRIGGERED_BY], i) | |
1410 | if (UNIT_VTABLE(other)->trigger_notify) | |
1411 | UNIT_VTABLE(other)->trigger_notify(other, u); | |
1412 | } | |
1413 | ||
e2f3b44c | 1414 | void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_success) { |
546ac4f0 | 1415 | Manager *m; |
7e6e7b06 | 1416 | bool unexpected; |
a096ed36 | 1417 | |
87f0e418 LP |
1418 | assert(u); |
1419 | assert(os < _UNIT_ACTIVE_STATE_MAX); | |
1420 | assert(ns < _UNIT_ACTIVE_STATE_MAX); | |
87f0e418 | 1421 | |
8e471ccd LP |
1422 | /* Note that this is called for all low-level state changes, |
1423 | * even if they might map to the same high-level | |
1424 | * UnitActiveState! That means that ns == os is OK an expected | |
c5315881 | 1425 | * behavior here. For example: if a mount point is remounted |
cd6d0a45 | 1426 | * this function will be called too! */ |
87f0e418 | 1427 | |
546ac4f0 MS |
1428 | m = u->manager; |
1429 | ||
1430 | if (m->n_reloading <= 0) { | |
bdbf9951 | 1431 | dual_timestamp ts; |
173e3821 | 1432 | |
bdbf9951 | 1433 | dual_timestamp_get(&ts); |
173e3821 | 1434 | |
bdbf9951 | 1435 | if (UNIT_IS_INACTIVE_OR_FAILED(os) && !UNIT_IS_INACTIVE_OR_FAILED(ns)) |
ac155bb8 | 1436 | u->inactive_exit_timestamp = ts; |
bdbf9951 | 1437 | else if (!UNIT_IS_INACTIVE_OR_FAILED(os) && UNIT_IS_INACTIVE_OR_FAILED(ns)) |
ac155bb8 | 1438 | u->inactive_enter_timestamp = ts; |
bdbf9951 LP |
1439 | |
1440 | if (!UNIT_IS_ACTIVE_OR_RELOADING(os) && UNIT_IS_ACTIVE_OR_RELOADING(ns)) | |
ac155bb8 | 1441 | u->active_enter_timestamp = ts; |
bdbf9951 | 1442 | else if (UNIT_IS_ACTIVE_OR_RELOADING(os) && !UNIT_IS_ACTIVE_OR_RELOADING(ns)) |
ac155bb8 | 1443 | u->active_exit_timestamp = ts; |
bdbf9951 | 1444 | } |
87f0e418 | 1445 | |
fdf20a31 | 1446 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
4ad49000 | 1447 | unit_destroy_cgroup(u); |
fb385181 | 1448 | |
7ed9f6cd MS |
1449 | if (UNIT_IS_INACTIVE_OR_FAILED(os) != UNIT_IS_INACTIVE_OR_FAILED(ns)) { |
1450 | ExecContext *ec = unit_get_exec_context(u); | |
1451 | if (ec && exec_context_may_touch_console(ec)) { | |
31a7eb86 ZJS |
1452 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) { |
1453 | m->n_on_console --; | |
1454 | ||
1455 | if (m->n_on_console == 0) | |
1456 | /* unset no_console_output flag, since the console is free */ | |
1457 | m->no_console_output = 0; | |
1458 | } else | |
1459 | m->n_on_console ++; | |
7ed9f6cd MS |
1460 | } |
1461 | } | |
1462 | ||
ac155bb8 | 1463 | if (u->job) { |
7e6e7b06 | 1464 | unexpected = false; |
87f0e418 | 1465 | |
ac155bb8 | 1466 | if (u->job->state == JOB_WAITING) |
87f0e418 LP |
1467 | |
1468 | /* So we reached a different state for this | |
1469 | * job. Let's see if we can run it now if it | |
1470 | * failed previously due to EAGAIN. */ | |
ac155bb8 | 1471 | job_add_to_run_queue(u->job); |
87f0e418 | 1472 | |
b410e6b9 | 1473 | /* Let's check whether this state change constitutes a |
35b8ca3a | 1474 | * finished job, or maybe contradicts a running job and |
b410e6b9 | 1475 | * hence needs to invalidate jobs. */ |
87f0e418 | 1476 | |
ac155bb8 | 1477 | switch (u->job->type) { |
87f0e418 | 1478 | |
b410e6b9 LP |
1479 | case JOB_START: |
1480 | case JOB_VERIFY_ACTIVE: | |
87f0e418 | 1481 | |
b410e6b9 | 1482 | if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) |
5273510e | 1483 | job_finish_and_invalidate(u->job, JOB_DONE, true); |
ac155bb8 | 1484 | else if (u->job->state == JOB_RUNNING && ns != UNIT_ACTIVATING) { |
b410e6b9 | 1485 | unexpected = true; |
41b02ec7 | 1486 | |
fdf20a31 | 1487 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
5273510e | 1488 | job_finish_and_invalidate(u->job, ns == UNIT_FAILED ? JOB_FAILED : JOB_DONE, true); |
b410e6b9 | 1489 | } |
87f0e418 | 1490 | |
b410e6b9 | 1491 | break; |
87f0e418 | 1492 | |
b410e6b9 LP |
1493 | case JOB_RELOAD: |
1494 | case JOB_RELOAD_OR_START: | |
87f0e418 | 1495 | |
ac155bb8 | 1496 | if (u->job->state == JOB_RUNNING) { |
a096ed36 | 1497 | if (ns == UNIT_ACTIVE) |
5273510e | 1498 | job_finish_and_invalidate(u->job, reload_success ? JOB_DONE : JOB_FAILED, true); |
032ff4af | 1499 | else if (ns != UNIT_ACTIVATING && ns != UNIT_RELOADING) { |
a096ed36 | 1500 | unexpected = true; |
41b02ec7 | 1501 | |
fdf20a31 | 1502 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
5273510e | 1503 | job_finish_and_invalidate(u->job, ns == UNIT_FAILED ? JOB_FAILED : JOB_DONE, true); |
a096ed36 | 1504 | } |
b410e6b9 | 1505 | } |
87f0e418 | 1506 | |
b410e6b9 | 1507 | break; |
87f0e418 | 1508 | |
b410e6b9 LP |
1509 | case JOB_STOP: |
1510 | case JOB_RESTART: | |
1511 | case JOB_TRY_RESTART: | |
87f0e418 | 1512 | |
fdf20a31 | 1513 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
5273510e | 1514 | job_finish_and_invalidate(u->job, JOB_DONE, true); |
ac155bb8 | 1515 | else if (u->job->state == JOB_RUNNING && ns != UNIT_DEACTIVATING) { |
b410e6b9 | 1516 | unexpected = true; |
5273510e | 1517 | job_finish_and_invalidate(u->job, JOB_FAILED, true); |
b410e6b9 | 1518 | } |
87f0e418 | 1519 | |
b410e6b9 | 1520 | break; |
87f0e418 | 1521 | |
b410e6b9 LP |
1522 | default: |
1523 | assert_not_reached("Job type unknown"); | |
87f0e418 | 1524 | } |
87f0e418 | 1525 | |
7e6e7b06 LP |
1526 | } else |
1527 | unexpected = true; | |
1528 | ||
546ac4f0 | 1529 | if (m->n_reloading <= 0) { |
f3bff0eb | 1530 | |
bdbf9951 LP |
1531 | /* If this state change happened without being |
1532 | * requested by a job, then let's retroactively start | |
1533 | * or stop dependencies. We skip that step when | |
1534 | * deserializing, since we don't want to create any | |
1535 | * additional jobs just because something is already | |
1536 | * activated. */ | |
1537 | ||
1538 | if (unexpected) { | |
1539 | if (UNIT_IS_INACTIVE_OR_FAILED(os) && UNIT_IS_ACTIVE_OR_ACTIVATING(ns)) | |
1540 | retroactively_start_dependencies(u); | |
1541 | else if (UNIT_IS_ACTIVE_OR_ACTIVATING(os) && UNIT_IS_INACTIVE_OR_DEACTIVATING(ns)) | |
1542 | retroactively_stop_dependencies(u); | |
1543 | } | |
5de9682c | 1544 | |
cd0504d0 MS |
1545 | /* stop unneeded units regardless if going down was expected or not */ |
1546 | if (UNIT_IS_ACTIVE_OR_ACTIVATING(os) && UNIT_IS_INACTIVE_OR_DEACTIVATING(ns)) | |
1547 | check_unneeded_dependencies(u); | |
1548 | ||
bdbf9951 | 1549 | if (ns != os && ns == UNIT_FAILED) { |
c1b6628d | 1550 | log_notice_unit(u->id, |
fcf8c440 | 1551 | "Unit %s entered failed state.", u->id); |
3ecaa09b | 1552 | unit_start_on_failure(u); |
cd6d0a45 | 1553 | } |
3b2775c5 | 1554 | } |
e537352b | 1555 | |
3b2775c5 LP |
1556 | /* Some names are special */ |
1557 | if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) { | |
1558 | ||
1559 | if (unit_has_name(u, SPECIAL_DBUS_SERVICE)) | |
1560 | /* The bus just might have become available, | |
1561 | * hence try to connect to it, if we aren't | |
1562 | * yet connected. */ | |
546ac4f0 | 1563 | bus_init(m, true); |
3b2775c5 | 1564 | |
ac155bb8 | 1565 | if (u->type == UNIT_SERVICE && |
3b2775c5 | 1566 | !UNIT_IS_ACTIVE_OR_RELOADING(os) && |
546ac4f0 | 1567 | m->n_reloading <= 0) { |
3b2775c5 | 1568 | /* Write audit record if we have just finished starting up */ |
546ac4f0 | 1569 | manager_send_unit_audit(m, u, AUDIT_SERVICE_START, true); |
ac155bb8 | 1570 | u->in_audit = true; |
3b2775c5 | 1571 | } |
e983b760 | 1572 | |
3b2775c5 | 1573 | if (!UNIT_IS_ACTIVE_OR_RELOADING(os)) |
546ac4f0 | 1574 | manager_send_unit_plymouth(m, u); |
bdbf9951 | 1575 | |
3b2775c5 | 1576 | } else { |
bdbf9951 | 1577 | |
3b2775c5 LP |
1578 | /* We don't care about D-Bus here, since we'll get an |
1579 | * asynchronous notification for it anyway. */ | |
cd6d0a45 | 1580 | |
ac155bb8 | 1581 | if (u->type == UNIT_SERVICE && |
3b2775c5 LP |
1582 | UNIT_IS_INACTIVE_OR_FAILED(ns) && |
1583 | !UNIT_IS_INACTIVE_OR_FAILED(os) && | |
546ac4f0 | 1584 | m->n_reloading <= 0) { |
4927fcae | 1585 | |
3b2775c5 LP |
1586 | /* Hmm, if there was no start record written |
1587 | * write it now, so that we always have a nice | |
1588 | * pair */ | |
ac155bb8 | 1589 | if (!u->in_audit) { |
546ac4f0 | 1590 | manager_send_unit_audit(m, u, AUDIT_SERVICE_START, ns == UNIT_INACTIVE); |
cd6d0a45 | 1591 | |
3b2775c5 | 1592 | if (ns == UNIT_INACTIVE) |
546ac4f0 | 1593 | manager_send_unit_audit(m, u, AUDIT_SERVICE_STOP, true); |
3b2775c5 LP |
1594 | } else |
1595 | /* Write audit record if we have just finished shutting down */ | |
546ac4f0 | 1596 | manager_send_unit_audit(m, u, AUDIT_SERVICE_STOP, ns == UNIT_INACTIVE); |
bdbf9951 | 1597 | |
ac155bb8 | 1598 | u->in_audit = false; |
cd6d0a45 | 1599 | } |
f278026d LP |
1600 | } |
1601 | ||
546ac4f0 | 1602 | manager_recheck_journal(m); |
3ecaa09b | 1603 | unit_trigger_notify(u); |
3b2775c5 | 1604 | |
f3bff0eb LP |
1605 | /* Maybe we finished startup and are now ready for being |
1606 | * stopped because unneeded? */ | |
bf6dcfa6 OS |
1607 | if (u->manager->n_reloading <= 0) |
1608 | unit_check_unneeded(u); | |
c1e1601e LP |
1609 | |
1610 | unit_add_to_dbus_queue(u); | |
701cc384 | 1611 | unit_add_to_gc_queue(u); |
87f0e418 LP |
1612 | } |
1613 | ||
acbb0225 | 1614 | int unit_watch_fd(Unit *u, int fd, uint32_t events, Watch *w) { |
b92bea5d ZJS |
1615 | struct epoll_event ev = { |
1616 | .data.ptr = w, | |
1617 | .events = events, | |
1618 | }; | |
87f0e418 LP |
1619 | |
1620 | assert(u); | |
1621 | assert(fd >= 0); | |
acbb0225 | 1622 | assert(w); |
ea430986 | 1623 | assert(w->type == WATCH_INVALID || (w->type == WATCH_FD && w->fd == fd && w->data.unit == u)); |
87f0e418 | 1624 | |
ac155bb8 | 1625 | if (epoll_ctl(u->manager->epoll_fd, |
acbb0225 LP |
1626 | w->type == WATCH_INVALID ? EPOLL_CTL_ADD : EPOLL_CTL_MOD, |
1627 | fd, | |
1628 | &ev) < 0) | |
1629 | return -errno; | |
87f0e418 | 1630 | |
acbb0225 LP |
1631 | w->fd = fd; |
1632 | w->type = WATCH_FD; | |
ea430986 | 1633 | w->data.unit = u; |
87f0e418 | 1634 | |
acbb0225 | 1635 | return 0; |
87f0e418 LP |
1636 | } |
1637 | ||
acbb0225 | 1638 | void unit_unwatch_fd(Unit *u, Watch *w) { |
87f0e418 | 1639 | assert(u); |
acbb0225 | 1640 | assert(w); |
87f0e418 | 1641 | |
acbb0225 LP |
1642 | if (w->type == WATCH_INVALID) |
1643 | return; | |
1644 | ||
ea430986 LP |
1645 | assert(w->type == WATCH_FD); |
1646 | assert(w->data.unit == u); | |
ac155bb8 | 1647 | assert_se(epoll_ctl(u->manager->epoll_fd, EPOLL_CTL_DEL, w->fd, NULL) >= 0); |
acbb0225 LP |
1648 | |
1649 | w->fd = -1; | |
1650 | w->type = WATCH_INVALID; | |
ea430986 | 1651 | w->data.unit = NULL; |
87f0e418 LP |
1652 | } |
1653 | ||
1654 | int unit_watch_pid(Unit *u, pid_t pid) { | |
1655 | assert(u); | |
1656 | assert(pid >= 1); | |
1657 | ||
05e343b7 LP |
1658 | /* Watch a specific PID. We only support one unit watching |
1659 | * each PID for now. */ | |
1660 | ||
ac155bb8 | 1661 | return hashmap_put(u->manager->watch_pids, LONG_TO_PTR(pid), u); |
87f0e418 LP |
1662 | } |
1663 | ||
1664 | void unit_unwatch_pid(Unit *u, pid_t pid) { | |
1665 | assert(u); | |
1666 | assert(pid >= 1); | |
1667 | ||
ac155bb8 | 1668 | hashmap_remove_value(u->manager->watch_pids, LONG_TO_PTR(pid), u); |
87f0e418 LP |
1669 | } |
1670 | ||
36697dc0 | 1671 | int unit_watch_timer(Unit *u, clockid_t clock_id, bool relative, usec_t usec, Watch *w) { |
b92bea5d | 1672 | struct itimerspec its = {}; |
acbb0225 | 1673 | int flags, fd; |
87f0e418 LP |
1674 | bool ours; |
1675 | ||
1676 | assert(u); | |
acbb0225 | 1677 | assert(w); |
faf919f1 | 1678 | assert(w->type == WATCH_INVALID || (w->type == WATCH_UNIT_TIMER && w->data.unit == u)); |
87f0e418 LP |
1679 | |
1680 | /* This will try to reuse the old timer if there is one */ | |
1681 | ||
faf919f1 LP |
1682 | if (w->type == WATCH_UNIT_TIMER) { |
1683 | assert(w->data.unit == u); | |
1684 | assert(w->fd >= 0); | |
1685 | ||
87f0e418 | 1686 | ours = false; |
acbb0225 | 1687 | fd = w->fd; |
faf919f1 LP |
1688 | } else if (w->type == WATCH_INVALID) { |
1689 | ||
87f0e418 | 1690 | ours = true; |
36697dc0 | 1691 | fd = timerfd_create(clock_id, TFD_NONBLOCK|TFD_CLOEXEC); |
68b29a9f | 1692 | if (fd < 0) |
87f0e418 | 1693 | return -errno; |
faf919f1 LP |
1694 | } else |
1695 | assert_not_reached("Invalid watch type"); | |
87f0e418 | 1696 | |
36697dc0 | 1697 | if (usec <= 0) { |
87f0e418 LP |
1698 | /* Set absolute time in the past, but not 0, since we |
1699 | * don't want to disarm the timer */ | |
1700 | its.it_value.tv_sec = 0; | |
1701 | its.it_value.tv_nsec = 1; | |
1702 | ||
1703 | flags = TFD_TIMER_ABSTIME; | |
1704 | } else { | |
36697dc0 LP |
1705 | timespec_store(&its.it_value, usec); |
1706 | flags = relative ? 0 : TFD_TIMER_ABSTIME; | |
87f0e418 LP |
1707 | } |
1708 | ||
1709 | /* This will also flush the elapse counter */ | |
1710 | if (timerfd_settime(fd, flags, &its, NULL) < 0) | |
1711 | goto fail; | |
1712 | ||
acbb0225 | 1713 | if (w->type == WATCH_INVALID) { |
b92bea5d ZJS |
1714 | struct epoll_event ev = { |
1715 | .data.ptr = w, | |
1716 | .events = EPOLLIN, | |
1717 | }; | |
acbb0225 | 1718 | |
ac155bb8 | 1719 | if (epoll_ctl(u->manager->epoll_fd, EPOLL_CTL_ADD, fd, &ev) < 0) |
acbb0225 LP |
1720 | goto fail; |
1721 | } | |
1722 | ||
faf919f1 | 1723 | w->type = WATCH_UNIT_TIMER; |
acbb0225 | 1724 | w->fd = fd; |
ea430986 | 1725 | w->data.unit = u; |
87f0e418 | 1726 | |
87f0e418 LP |
1727 | return 0; |
1728 | ||
1729 | fail: | |
1730 | if (ours) | |
ea430986 | 1731 | close_nointr_nofail(fd); |
87f0e418 LP |
1732 | |
1733 | return -errno; | |
1734 | } | |
1735 | ||
acbb0225 | 1736 | void unit_unwatch_timer(Unit *u, Watch *w) { |
87f0e418 | 1737 | assert(u); |
acbb0225 | 1738 | assert(w); |
87f0e418 | 1739 | |
acbb0225 | 1740 | if (w->type == WATCH_INVALID) |
87f0e418 LP |
1741 | return; |
1742 | ||
faf919f1 LP |
1743 | assert(w->type == WATCH_UNIT_TIMER); |
1744 | assert(w->data.unit == u); | |
1745 | assert(w->fd >= 0); | |
acbb0225 | 1746 | |
ac155bb8 | 1747 | assert_se(epoll_ctl(u->manager->epoll_fd, EPOLL_CTL_DEL, w->fd, NULL) >= 0); |
a16e1123 | 1748 | close_nointr_nofail(w->fd); |
acbb0225 LP |
1749 | |
1750 | w->fd = -1; | |
1751 | w->type = WATCH_INVALID; | |
ea430986 | 1752 | w->data.unit = NULL; |
87f0e418 LP |
1753 | } |
1754 | ||
1755 | bool unit_job_is_applicable(Unit *u, JobType j) { | |
1756 | assert(u); | |
1757 | assert(j >= 0 && j < _JOB_TYPE_MAX); | |
1758 | ||
1759 | switch (j) { | |
1760 | ||
1761 | case JOB_VERIFY_ACTIVE: | |
1762 | case JOB_START: | |
57339f47 | 1763 | case JOB_STOP: |
e0209d83 | 1764 | case JOB_NOP: |
87f0e418 LP |
1765 | return true; |
1766 | ||
87f0e418 LP |
1767 | case JOB_RESTART: |
1768 | case JOB_TRY_RESTART: | |
1769 | return unit_can_start(u); | |
1770 | ||
1771 | case JOB_RELOAD: | |
1772 | return unit_can_reload(u); | |
1773 | ||
1774 | case JOB_RELOAD_OR_START: | |
1775 | return unit_can_reload(u) && unit_can_start(u); | |
1776 | ||
1777 | default: | |
1778 | assert_not_reached("Invalid job type"); | |
1779 | } | |
1780 | } | |
1781 | ||
701cc384 | 1782 | int unit_add_dependency(Unit *u, UnitDependency d, Unit *other, bool add_reference) { |
87f0e418 LP |
1783 | |
1784 | static const UnitDependency inverse_table[_UNIT_DEPENDENCY_MAX] = { | |
1785 | [UNIT_REQUIRES] = UNIT_REQUIRED_BY, | |
9e2f7c11 | 1786 | [UNIT_REQUIRES_OVERRIDABLE] = UNIT_REQUIRED_BY_OVERRIDABLE, |
87f0e418 LP |
1787 | [UNIT_WANTS] = UNIT_WANTED_BY, |
1788 | [UNIT_REQUISITE] = UNIT_REQUIRED_BY, | |
9e2f7c11 | 1789 | [UNIT_REQUISITE_OVERRIDABLE] = UNIT_REQUIRED_BY_OVERRIDABLE, |
7f2cddae | 1790 | [UNIT_BINDS_TO] = UNIT_BOUND_BY, |
60649f17 | 1791 | [UNIT_PART_OF] = UNIT_CONSISTS_OF, |
87f0e418 | 1792 | [UNIT_REQUIRED_BY] = _UNIT_DEPENDENCY_INVALID, |
9e2f7c11 | 1793 | [UNIT_REQUIRED_BY_OVERRIDABLE] = _UNIT_DEPENDENCY_INVALID, |
87f0e418 | 1794 | [UNIT_WANTED_BY] = _UNIT_DEPENDENCY_INVALID, |
7f2cddae | 1795 | [UNIT_BOUND_BY] = UNIT_BINDS_TO, |
60649f17 | 1796 | [UNIT_CONSISTS_OF] = UNIT_PART_OF, |
69dd2852 LP |
1797 | [UNIT_CONFLICTS] = UNIT_CONFLICTED_BY, |
1798 | [UNIT_CONFLICTED_BY] = UNIT_CONFLICTS, | |
87f0e418 | 1799 | [UNIT_BEFORE] = UNIT_AFTER, |
701cc384 | 1800 | [UNIT_AFTER] = UNIT_BEFORE, |
5de9682c | 1801 | [UNIT_ON_FAILURE] = _UNIT_DEPENDENCY_INVALID, |
701cc384 | 1802 | [UNIT_REFERENCES] = UNIT_REFERENCED_BY, |
57020a3a LP |
1803 | [UNIT_REFERENCED_BY] = UNIT_REFERENCES, |
1804 | [UNIT_TRIGGERS] = UNIT_TRIGGERED_BY, | |
4dcc1cb4 | 1805 | [UNIT_TRIGGERED_BY] = UNIT_TRIGGERS, |
7f2cddae | 1806 | [UNIT_PROPAGATES_RELOAD_TO] = UNIT_RELOAD_PROPAGATED_FROM, |
85e9a101 | 1807 | [UNIT_RELOAD_PROPAGATED_FROM] = UNIT_PROPAGATES_RELOAD_TO, |
87f0e418 | 1808 | }; |
701cc384 | 1809 | int r, q = 0, v = 0, w = 0; |
87f0e418 LP |
1810 | |
1811 | assert(u); | |
1812 | assert(d >= 0 && d < _UNIT_DEPENDENCY_MAX); | |
87f0e418 LP |
1813 | assert(other); |
1814 | ||
9f151f29 LP |
1815 | u = unit_follow_merge(u); |
1816 | other = unit_follow_merge(other); | |
1817 | ||
87f0e418 LP |
1818 | /* We won't allow dependencies on ourselves. We will not |
1819 | * consider them an error however. */ | |
1820 | if (u == other) | |
1821 | return 0; | |
1822 | ||
ac155bb8 | 1823 | if ((r = set_ensure_allocated(&u->dependencies[d], trivial_hash_func, trivial_compare_func)) < 0) |
87f0e418 LP |
1824 | return r; |
1825 | ||
5de9682c | 1826 | if (inverse_table[d] != _UNIT_DEPENDENCY_INVALID) |
ac155bb8 | 1827 | if ((r = set_ensure_allocated(&other->dependencies[inverse_table[d]], trivial_hash_func, trivial_compare_func)) < 0) |
5de9682c LP |
1828 | return r; |
1829 | ||
701cc384 | 1830 | if (add_reference) |
ac155bb8 MS |
1831 | if ((r = set_ensure_allocated(&u->dependencies[UNIT_REFERENCES], trivial_hash_func, trivial_compare_func)) < 0 || |
1832 | (r = set_ensure_allocated(&other->dependencies[UNIT_REFERENCED_BY], trivial_hash_func, trivial_compare_func)) < 0) | |
701cc384 | 1833 | return r; |
87f0e418 | 1834 | |
ac155bb8 | 1835 | if ((q = set_put(u->dependencies[d], other)) < 0) |
701cc384 | 1836 | return q; |
87f0e418 | 1837 | |
5de9682c | 1838 | if (inverse_table[d] != _UNIT_DEPENDENCY_INVALID) |
ac155bb8 | 1839 | if ((v = set_put(other->dependencies[inverse_table[d]], u)) < 0) { |
5de9682c LP |
1840 | r = v; |
1841 | goto fail; | |
1842 | } | |
701cc384 LP |
1843 | |
1844 | if (add_reference) { | |
ac155bb8 | 1845 | if ((w = set_put(u->dependencies[UNIT_REFERENCES], other)) < 0) { |
701cc384 LP |
1846 | r = w; |
1847 | goto fail; | |
1848 | } | |
1849 | ||
ac155bb8 | 1850 | if ((r = set_put(other->dependencies[UNIT_REFERENCED_BY], u)) < 0) |
701cc384 | 1851 | goto fail; |
87f0e418 LP |
1852 | } |
1853 | ||
c1e1601e | 1854 | unit_add_to_dbus_queue(u); |
87f0e418 | 1855 | return 0; |
701cc384 LP |
1856 | |
1857 | fail: | |
1858 | if (q > 0) | |
ac155bb8 | 1859 | set_remove(u->dependencies[d], other); |
701cc384 LP |
1860 | |
1861 | if (v > 0) | |
ac155bb8 | 1862 | set_remove(other->dependencies[inverse_table[d]], u); |
701cc384 LP |
1863 | |
1864 | if (w > 0) | |
ac155bb8 | 1865 | set_remove(u->dependencies[UNIT_REFERENCES], other); |
701cc384 LP |
1866 | |
1867 | return r; | |
87f0e418 | 1868 | } |
0301abf4 | 1869 | |
2c966c03 LP |
1870 | int unit_add_two_dependencies(Unit *u, UnitDependency d, UnitDependency e, Unit *other, bool add_reference) { |
1871 | int r; | |
1872 | ||
1873 | assert(u); | |
1874 | ||
1875 | if ((r = unit_add_dependency(u, d, other, add_reference)) < 0) | |
1876 | return r; | |
1877 | ||
1878 | if ((r = unit_add_dependency(u, e, other, add_reference)) < 0) | |
1879 | return r; | |
1880 | ||
1881 | return 0; | |
1882 | } | |
1883 | ||
9e2f7c11 LP |
1884 | static const char *resolve_template(Unit *u, const char *name, const char*path, char **p) { |
1885 | char *s; | |
1886 | ||
1887 | assert(u); | |
1888 | assert(name || path); | |
8afbb8e1 | 1889 | assert(p); |
9e2f7c11 LP |
1890 | |
1891 | if (!name) | |
9eb977db | 1892 | name = path_get_file_name(path); |
9e2f7c11 LP |
1893 | |
1894 | if (!unit_name_is_template(name)) { | |
1895 | *p = NULL; | |
1896 | return name; | |
1897 | } | |
1898 | ||
ac155bb8 MS |
1899 | if (u->instance) |
1900 | s = unit_name_replace_instance(name, u->instance); | |
9e2f7c11 | 1901 | else { |
ae018d9b | 1902 | _cleanup_free_ char *i = NULL; |
9e2f7c11 | 1903 | |
8afbb8e1 LP |
1904 | i = unit_name_to_prefix(u->id); |
1905 | if (!i) | |
9e2f7c11 LP |
1906 | return NULL; |
1907 | ||
1908 | s = unit_name_replace_instance(name, i); | |
9e2f7c11 LP |
1909 | } |
1910 | ||
1911 | if (!s) | |
1912 | return NULL; | |
1913 | ||
1914 | *p = s; | |
1915 | return s; | |
1916 | } | |
1917 | ||
701cc384 | 1918 | int unit_add_dependency_by_name(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) { |
09b6b09f LP |
1919 | Unit *other; |
1920 | int r; | |
8afbb8e1 | 1921 | _cleanup_free_ char *s = NULL; |
09b6b09f | 1922 | |
9e2f7c11 LP |
1923 | assert(u); |
1924 | assert(name || path); | |
09b6b09f | 1925 | |
8afbb8e1 LP |
1926 | name = resolve_template(u, name, path, &s); |
1927 | if (!name) | |
9e2f7c11 | 1928 | return -ENOMEM; |
09b6b09f | 1929 | |
8afbb8e1 LP |
1930 | r = manager_load_unit(u->manager, name, path, NULL, &other); |
1931 | if (r < 0) | |
1932 | return r; | |
9e2f7c11 | 1933 | |
8afbb8e1 | 1934 | return unit_add_dependency(u, d, other, add_reference); |
09b6b09f LP |
1935 | } |
1936 | ||
2c966c03 LP |
1937 | int unit_add_two_dependencies_by_name(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference) { |
1938 | Unit *other; | |
1939 | int r; | |
68eda4bd | 1940 | _cleanup_free_ char *s = NULL; |
2c966c03 LP |
1941 | |
1942 | assert(u); | |
1943 | assert(name || path); | |
1944 | ||
1945 | if (!(name = resolve_template(u, name, path, &s))) | |
1946 | return -ENOMEM; | |
1947 | ||
ac155bb8 | 1948 | if ((r = manager_load_unit(u->manager, name, path, NULL, &other)) < 0) |
68eda4bd | 1949 | return r; |
2c966c03 LP |
1950 | |
1951 | r = unit_add_two_dependencies(u, d, e, other, add_reference); | |
1952 | ||
2c966c03 LP |
1953 | return r; |
1954 | } | |
1955 | ||
701cc384 | 1956 | int unit_add_dependency_by_name_inverse(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) { |
bd77d0fc LP |
1957 | Unit *other; |
1958 | int r; | |
68eda4bd | 1959 | _cleanup_free_ char *s = NULL; |
bd77d0fc | 1960 | |
9e2f7c11 LP |
1961 | assert(u); |
1962 | assert(name || path); | |
bd77d0fc | 1963 | |
9e2f7c11 LP |
1964 | if (!(name = resolve_template(u, name, path, &s))) |
1965 | return -ENOMEM; | |
bd77d0fc | 1966 | |
ac155bb8 | 1967 | if ((r = manager_load_unit(u->manager, name, path, NULL, &other)) < 0) |
68eda4bd | 1968 | return r; |
9e2f7c11 | 1969 | |
701cc384 | 1970 | r = unit_add_dependency(other, d, u, add_reference); |
9e2f7c11 | 1971 | |
9e2f7c11 | 1972 | return r; |
bd77d0fc LP |
1973 | } |
1974 | ||
2c966c03 LP |
1975 | int unit_add_two_dependencies_by_name_inverse(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference) { |
1976 | Unit *other; | |
1977 | int r; | |
68eda4bd | 1978 | _cleanup_free_ char *s = NULL; |
2c966c03 LP |
1979 | |
1980 | assert(u); | |
1981 | assert(name || path); | |
1982 | ||
1983 | if (!(name = resolve_template(u, name, path, &s))) | |
1984 | return -ENOMEM; | |
1985 | ||
ac155bb8 | 1986 | if ((r = manager_load_unit(u->manager, name, path, NULL, &other)) < 0) |
68eda4bd | 1987 | return r; |
2c966c03 LP |
1988 | |
1989 | if ((r = unit_add_two_dependencies(other, d, e, u, add_reference)) < 0) | |
68eda4bd | 1990 | return r; |
2c966c03 | 1991 | |
2c966c03 LP |
1992 | return r; |
1993 | } | |
1994 | ||
0301abf4 | 1995 | int set_unit_path(const char *p) { |
26d04f86 | 1996 | _cleanup_free_ char *c = NULL; |
0301abf4 LP |
1997 | |
1998 | /* This is mostly for debug purposes */ | |
26d04f86 LP |
1999 | c = path_make_absolute_cwd(p); |
2000 | if (setenv("SYSTEMD_UNIT_PATH", c, 0) < 0) | |
2001 | return -errno; | |
0301abf4 LP |
2002 | |
2003 | return 0; | |
2004 | } | |
88066b3a | 2005 | |
ea430986 | 2006 | char *unit_dbus_path(Unit *u) { |
ea430986 LP |
2007 | assert(u); |
2008 | ||
ac155bb8 | 2009 | if (!u->id) |
04ade7d2 LP |
2010 | return NULL; |
2011 | ||
48899192 | 2012 | return unit_dbus_path_from_name(u->id); |
ea430986 LP |
2013 | } |
2014 | ||
41f9172f | 2015 | char *unit_default_cgroup_path(Unit *u) { |
d7bd3de0 | 2016 | _cleanup_free_ char *escaped = NULL, *slice = NULL; |
a016b922 | 2017 | int r; |
5954c074 | 2018 | |
013b87c0 LP |
2019 | assert(u); |
2020 | ||
4ad49000 LP |
2021 | if (unit_has_name(u, SPECIAL_ROOT_SLICE)) |
2022 | return strdup(u->manager->cgroup_root); | |
2023 | ||
2024 | if (UNIT_ISSET(u->slice) && !unit_has_name(UNIT_DEREF(u->slice), SPECIAL_ROOT_SLICE)) { | |
a016b922 LP |
2025 | r = cg_slice_to_path(UNIT_DEREF(u->slice)->id, &slice); |
2026 | if (r < 0) | |
2027 | return NULL; | |
2028 | } | |
2029 | ||
d7bd3de0 LP |
2030 | escaped = cg_escape(u->id); |
2031 | if (!escaped) | |
5954c074 LP |
2032 | return NULL; |
2033 | ||
d7bd3de0 LP |
2034 | if (slice) |
2035 | return strjoin(u->manager->cgroup_root, "/", slice, "/", escaped, NULL); | |
2036 | else | |
2037 | return strjoin(u->manager->cgroup_root, "/", escaped, NULL); | |
013b87c0 LP |
2038 | } |
2039 | ||
a016b922 | 2040 | int unit_add_default_slice(Unit *u) { |
a8833944 LP |
2041 | _cleanup_free_ char *b = NULL; |
2042 | const char *slice_name; | |
a016b922 LP |
2043 | Unit *slice; |
2044 | int r; | |
2045 | ||
2046 | assert(u); | |
2047 | ||
9444b1f2 | 2048 | if (UNIT_ISSET(u->slice)) |
a016b922 LP |
2049 | return 0; |
2050 | ||
4ad49000 | 2051 | if (!unit_get_cgroup_context(u)) |
a016b922 LP |
2052 | return 0; |
2053 | ||
a8833944 LP |
2054 | if (u->instance) { |
2055 | _cleanup_free_ char *prefix = NULL, *escaped = NULL; | |
68eda4bd | 2056 | |
a8833944 LP |
2057 | /* Implicitly place all instantiated units in their |
2058 | * own per-template slice */ | |
2059 | ||
2060 | prefix = unit_name_to_prefix(u->id); | |
2061 | if (!prefix) | |
2062 | return -ENOMEM; | |
2063 | ||
2064 | /* The prefix is already escaped, but it might include | |
2065 | * "-" which has a special meaning for slice units, | |
2066 | * hence escape it here extra. */ | |
2067 | escaped = strreplace(prefix, "-", "\\x2d"); | |
2068 | if (!escaped) | |
2069 | return -ENOMEM; | |
2070 | ||
2071 | if (u->manager->running_as == SYSTEMD_SYSTEM) | |
2072 | b = strjoin("system-", escaped, ".slice", NULL); | |
2073 | else | |
2074 | b = strappend(escaped, ".slice"); | |
2075 | if (!b) | |
2076 | return -ENOMEM; | |
2077 | ||
2078 | slice_name = b; | |
2079 | } else | |
2080 | slice_name = | |
2081 | u->manager->running_as == SYSTEMD_SYSTEM | |
2082 | ? SPECIAL_SYSTEM_SLICE | |
2083 | : SPECIAL_ROOT_SLICE; | |
2084 | ||
2085 | r = manager_load_unit(u->manager, slice_name, NULL, NULL, &slice); | |
a016b922 LP |
2086 | if (r < 0) |
2087 | return r; | |
2088 | ||
2089 | unit_ref_set(&u->slice, slice); | |
2090 | return 0; | |
2091 | } | |
2092 | ||
9444b1f2 LP |
2093 | const char *unit_slice_name(Unit *u) { |
2094 | assert(u); | |
2095 | ||
2096 | if (!UNIT_ISSET(u->slice)) | |
2097 | return NULL; | |
2098 | ||
2099 | return UNIT_DEREF(u->slice)->id; | |
2100 | } | |
2101 | ||
f6ff8c29 | 2102 | int unit_load_related_unit(Unit *u, const char *type, Unit **_found) { |
78edb35a | 2103 | _cleanup_free_ char *t = NULL; |
f6ff8c29 LP |
2104 | int r; |
2105 | ||
2106 | assert(u); | |
2107 | assert(type); | |
2108 | assert(_found); | |
2109 | ||
78edb35a LP |
2110 | t = unit_name_change_suffix(u->id, type); |
2111 | if (!t) | |
f6ff8c29 LP |
2112 | return -ENOMEM; |
2113 | ||
2114 | assert(!unit_has_name(u, t)); | |
2115 | ||
ac155bb8 | 2116 | r = manager_load_unit(u->manager, t, NULL, NULL, _found); |
9e2f7c11 | 2117 | assert(r < 0 || *_found != u); |
f6ff8c29 LP |
2118 | return r; |
2119 | } | |
2120 | ||
a16e1123 | 2121 | int unit_get_related_unit(Unit *u, const char *type, Unit **_found) { |
78edb35a | 2122 | _cleanup_free_ char *t = NULL; |
a16e1123 | 2123 | Unit *found; |
a16e1123 LP |
2124 | |
2125 | assert(u); | |
2126 | assert(type); | |
2127 | assert(_found); | |
2128 | ||
78edb35a LP |
2129 | t = unit_name_change_suffix(u->id, type); |
2130 | if (!t) | |
a16e1123 LP |
2131 | return -ENOMEM; |
2132 | ||
2133 | assert(!unit_has_name(u, t)); | |
2134 | ||
ac155bb8 | 2135 | found = manager_get_unit(u->manager, t); |
a16e1123 LP |
2136 | if (!found) |
2137 | return -ENOENT; | |
2138 | ||
2139 | *_found = found; | |
2140 | return 0; | |
2141 | } | |
2142 | ||
05e343b7 LP |
2143 | int unit_watch_bus_name(Unit *u, const char *name) { |
2144 | assert(u); | |
2145 | assert(name); | |
2146 | ||
2147 | /* Watch a specific name on the bus. We only support one unit | |
2148 | * watching each name for now. */ | |
2149 | ||
ac155bb8 | 2150 | return hashmap_put(u->manager->watch_bus, name, u); |
05e343b7 LP |
2151 | } |
2152 | ||
2153 | void unit_unwatch_bus_name(Unit *u, const char *name) { | |
2154 | assert(u); | |
2155 | assert(name); | |
2156 | ||
ac155bb8 | 2157 | hashmap_remove_value(u->manager->watch_bus, name, u); |
05e343b7 LP |
2158 | } |
2159 | ||
a16e1123 LP |
2160 | bool unit_can_serialize(Unit *u) { |
2161 | assert(u); | |
2162 | ||
2163 | return UNIT_VTABLE(u)->serialize && UNIT_VTABLE(u)->deserialize_item; | |
2164 | } | |
2165 | ||
6b78f9b4 | 2166 | int unit_serialize(Unit *u, FILE *f, FDSet *fds, bool serialize_jobs) { |
a16e1123 LP |
2167 | int r; |
2168 | ||
2169 | assert(u); | |
2170 | assert(f); | |
2171 | assert(fds); | |
2172 | ||
2173 | if (!unit_can_serialize(u)) | |
2174 | return 0; | |
2175 | ||
6fa48533 LP |
2176 | r = UNIT_VTABLE(u)->serialize(u, f, fds); |
2177 | if (r < 0) | |
a16e1123 LP |
2178 | return r; |
2179 | ||
cca098b0 | 2180 | |
6b78f9b4 LP |
2181 | if (serialize_jobs) { |
2182 | if (u->job) { | |
2183 | fprintf(f, "job\n"); | |
2184 | job_serialize(u->job, f, fds); | |
2185 | } | |
2186 | ||
2187 | if (u->nop_job) { | |
2188 | fprintf(f, "job\n"); | |
2189 | job_serialize(u->nop_job, f, fds); | |
2190 | } | |
e0209d83 MS |
2191 | } |
2192 | ||
ac155bb8 MS |
2193 | dual_timestamp_serialize(f, "inactive-exit-timestamp", &u->inactive_exit_timestamp); |
2194 | dual_timestamp_serialize(f, "active-enter-timestamp", &u->active_enter_timestamp); | |
2195 | dual_timestamp_serialize(f, "active-exit-timestamp", &u->active_exit_timestamp); | |
2196 | dual_timestamp_serialize(f, "inactive-enter-timestamp", &u->inactive_enter_timestamp); | |
2197 | dual_timestamp_serialize(f, "condition-timestamp", &u->condition_timestamp); | |
2791a8f8 | 2198 | |
ac155bb8 MS |
2199 | if (dual_timestamp_is_set(&u->condition_timestamp)) |
2200 | unit_serialize_item(u, f, "condition-result", yes_no(u->condition_result)); | |
10717a1a | 2201 | |
c2756a68 LP |
2202 | unit_serialize_item(u, f, "transient", yes_no(u->transient)); |
2203 | ||
2204 | if (u->cgroup_path) | |
2205 | unit_serialize_item(u, f, "cgroup", u->cgroup_path); | |
2206 | ||
a16e1123 LP |
2207 | /* End marker */ |
2208 | fputc('\n', f); | |
2209 | return 0; | |
2210 | } | |
2211 | ||
2212 | void unit_serialize_item_format(Unit *u, FILE *f, const char *key, const char *format, ...) { | |
2213 | va_list ap; | |
2214 | ||
2215 | assert(u); | |
2216 | assert(f); | |
2217 | assert(key); | |
2218 | assert(format); | |
2219 | ||
2220 | fputs(key, f); | |
2221 | fputc('=', f); | |
2222 | ||
2223 | va_start(ap, format); | |
2224 | vfprintf(f, format, ap); | |
2225 | va_end(ap); | |
2226 | ||
2227 | fputc('\n', f); | |
2228 | } | |
2229 | ||
2230 | void unit_serialize_item(Unit *u, FILE *f, const char *key, const char *value) { | |
2231 | assert(u); | |
2232 | assert(f); | |
2233 | assert(key); | |
2234 | assert(value); | |
2235 | ||
2236 | fprintf(f, "%s=%s\n", key, value); | |
2237 | } | |
2238 | ||
2239 | int unit_deserialize(Unit *u, FILE *f, FDSet *fds) { | |
2240 | int r; | |
2241 | ||
2242 | assert(u); | |
2243 | assert(f); | |
2244 | assert(fds); | |
2245 | ||
2246 | if (!unit_can_serialize(u)) | |
2247 | return 0; | |
2248 | ||
2249 | for (;;) { | |
20c03b7b | 2250 | char line[LINE_MAX], *l, *v; |
a16e1123 LP |
2251 | size_t k; |
2252 | ||
2253 | if (!fgets(line, sizeof(line), f)) { | |
2254 | if (feof(f)) | |
2255 | return 0; | |
2256 | return -errno; | |
2257 | } | |
2258 | ||
10f8e83c | 2259 | char_array_0(line); |
a16e1123 LP |
2260 | l = strstrip(line); |
2261 | ||
2262 | /* End marker */ | |
2263 | if (l[0] == 0) | |
2264 | return 0; | |
2265 | ||
2266 | k = strcspn(l, "="); | |
2267 | ||
2268 | if (l[k] == '=') { | |
2269 | l[k] = 0; | |
2270 | v = l+k+1; | |
2271 | } else | |
2272 | v = l+k; | |
2273 | ||
cca098b0 | 2274 | if (streq(l, "job")) { |
39a18c60 MS |
2275 | if (v[0] == '\0') { |
2276 | /* new-style serialized job */ | |
2277 | Job *j = job_new_raw(u); | |
2278 | if (!j) | |
2279 | return -ENOMEM; | |
2280 | ||
2281 | r = job_deserialize(j, f, fds); | |
2282 | if (r < 0) { | |
2283 | job_free(j); | |
2284 | return r; | |
2285 | } | |
cca098b0 | 2286 | |
39a18c60 MS |
2287 | r = hashmap_put(u->manager->jobs, UINT32_TO_PTR(j->id), j); |
2288 | if (r < 0) { | |
2289 | job_free(j); | |
2290 | return r; | |
2291 | } | |
e0209d83 MS |
2292 | |
2293 | r = job_install_deserialized(j); | |
2294 | if (r < 0) { | |
2295 | hashmap_remove(u->manager->jobs, UINT32_TO_PTR(j->id)); | |
2296 | job_free(j); | |
2297 | return r; | |
2298 | } | |
6b19ad24 MS |
2299 | |
2300 | if (j->state == JOB_RUNNING) | |
2301 | u->manager->n_running_jobs++; | |
39a18c60 MS |
2302 | } else { |
2303 | /* legacy */ | |
2304 | JobType type = job_type_from_string(v); | |
2305 | if (type < 0) | |
2306 | log_debug("Failed to parse job type value %s", v); | |
2307 | else | |
2308 | u->deserialized_job = type; | |
2309 | } | |
cca098b0 | 2310 | continue; |
8aaf019b | 2311 | } else if (streq(l, "inactive-exit-timestamp")) { |
ac155bb8 | 2312 | dual_timestamp_deserialize(v, &u->inactive_exit_timestamp); |
8aaf019b LP |
2313 | continue; |
2314 | } else if (streq(l, "active-enter-timestamp")) { | |
ac155bb8 | 2315 | dual_timestamp_deserialize(v, &u->active_enter_timestamp); |
8aaf019b LP |
2316 | continue; |
2317 | } else if (streq(l, "active-exit-timestamp")) { | |
ac155bb8 | 2318 | dual_timestamp_deserialize(v, &u->active_exit_timestamp); |
8aaf019b LP |
2319 | continue; |
2320 | } else if (streq(l, "inactive-enter-timestamp")) { | |
ac155bb8 | 2321 | dual_timestamp_deserialize(v, &u->inactive_enter_timestamp); |
8aaf019b | 2322 | continue; |
2791a8f8 | 2323 | } else if (streq(l, "condition-timestamp")) { |
ac155bb8 | 2324 | dual_timestamp_deserialize(v, &u->condition_timestamp); |
2791a8f8 LP |
2325 | continue; |
2326 | } else if (streq(l, "condition-result")) { | |
2327 | int b; | |
2328 | ||
c2756a68 LP |
2329 | b = parse_boolean(v); |
2330 | if (b < 0) | |
2791a8f8 LP |
2331 | log_debug("Failed to parse condition result value %s", v); |
2332 | else | |
ac155bb8 | 2333 | u->condition_result = b; |
efbac6d2 LP |
2334 | |
2335 | continue; | |
c2756a68 LP |
2336 | |
2337 | } else if (streq(l, "transient")) { | |
2338 | int b; | |
2339 | ||
2340 | b = parse_boolean(v); | |
2341 | if (b < 0) | |
2342 | log_debug("Failed to parse transient bool %s", v); | |
2343 | else | |
2344 | u->transient = b; | |
2345 | ||
2346 | continue; | |
2347 | } else if (streq(l, "cgroup")) { | |
2348 | char *s; | |
2349 | ||
2350 | s = strdup(v); | |
f440e1bb | 2351 | if (!s) |
c2756a68 LP |
2352 | return -ENOMEM; |
2353 | ||
2354 | free(u->cgroup_path); | |
2355 | u->cgroup_path = s; | |
72673e86 | 2356 | |
b58b8e11 | 2357 | assert(hashmap_put(u->manager->cgroup_unit, s, u) == 1); |
c2756a68 | 2358 | continue; |
8aaf019b | 2359 | } |
cca098b0 | 2360 | |
c2756a68 LP |
2361 | r = UNIT_VTABLE(u)->deserialize_item(u, l, v, fds); |
2362 | if (r < 0) | |
a16e1123 LP |
2363 | return r; |
2364 | } | |
2365 | } | |
2366 | ||
6e2ef85b LP |
2367 | int unit_add_node_link(Unit *u, const char *what, bool wants) { |
2368 | Unit *device; | |
68eda4bd | 2369 | _cleanup_free_ char *e = NULL; |
6e2ef85b LP |
2370 | int r; |
2371 | ||
2372 | assert(u); | |
2373 | ||
2374 | if (!what) | |
2375 | return 0; | |
2376 | ||
2377 | /* Adds in links to the device node that this unit is based on */ | |
2378 | ||
8407a5d0 | 2379 | if (!is_device_path(what)) |
6e2ef85b LP |
2380 | return 0; |
2381 | ||
35eb6b12 LP |
2382 | e = unit_name_from_path(what, ".device"); |
2383 | if (!e) | |
6e2ef85b LP |
2384 | return -ENOMEM; |
2385 | ||
ac155bb8 | 2386 | r = manager_load_unit(u->manager, e, NULL, NULL, &device); |
68eda4bd | 2387 | |
6e2ef85b LP |
2388 | if (r < 0) |
2389 | return r; | |
2390 | ||
faa368e3 LP |
2391 | r = unit_add_two_dependencies(u, UNIT_AFTER, UNIT_BINDS_TO, device, true); |
2392 | if (r < 0) | |
6e2ef85b LP |
2393 | return r; |
2394 | ||
faa368e3 LP |
2395 | if (wants) { |
2396 | r = unit_add_dependency(device, UNIT_WANTS, u, false); | |
2397 | if (r < 0) | |
6e2ef85b | 2398 | return r; |
faa368e3 | 2399 | } |
6e2ef85b LP |
2400 | |
2401 | return 0; | |
2402 | } | |
a16e1123 | 2403 | |
cca098b0 LP |
2404 | int unit_coldplug(Unit *u) { |
2405 | int r; | |
2406 | ||
2407 | assert(u); | |
2408 | ||
2409 | if (UNIT_VTABLE(u)->coldplug) | |
2410 | if ((r = UNIT_VTABLE(u)->coldplug(u)) < 0) | |
2411 | return r; | |
2412 | ||
39a18c60 MS |
2413 | if (u->job) { |
2414 | r = job_coldplug(u->job); | |
2415 | if (r < 0) | |
2416 | return r; | |
2417 | } else if (u->deserialized_job >= 0) { | |
2418 | /* legacy */ | |
2419 | r = manager_add_job(u->manager, u->deserialized_job, u, JOB_IGNORE_REQUIREMENTS, false, NULL, NULL); | |
2420 | if (r < 0) | |
cca098b0 LP |
2421 | return r; |
2422 | ||
ac155bb8 | 2423 | u->deserialized_job = _JOB_TYPE_INVALID; |
cca098b0 LP |
2424 | } |
2425 | ||
2426 | return 0; | |
2427 | } | |
2428 | ||
b1e2b33c CR |
2429 | #pragma GCC diagnostic push |
2430 | #pragma GCC diagnostic ignored "-Wformat-nonliteral" | |
49b1d377 MS |
2431 | void unit_status_printf(Unit *u, const char *status, const char *unit_status_msg_format) { |
2432 | manager_status_printf(u->manager, false, status, unit_status_msg_format, unit_description(u)); | |
2433 | } | |
b1e2b33c | 2434 | #pragma GCC diagnostic pop |
49b1d377 | 2435 | |
45fb0699 | 2436 | bool unit_need_daemon_reload(Unit *u) { |
ae7a7182 OS |
2437 | _cleanup_strv_free_ char **t = NULL; |
2438 | char **path; | |
1b64d026 | 2439 | struct stat st; |
ae7a7182 | 2440 | unsigned loaded_cnt, current_cnt; |
1b64d026 | 2441 | |
45fb0699 LP |
2442 | assert(u); |
2443 | ||
ac155bb8 | 2444 | if (u->fragment_path) { |
5f4b19f4 | 2445 | zero(st); |
ac155bb8 | 2446 | if (stat(u->fragment_path, &st) < 0) |
5f4b19f4 LP |
2447 | /* What, cannot access this anymore? */ |
2448 | return true; | |
45fb0699 | 2449 | |
ac155bb8 MS |
2450 | if (u->fragment_mtime > 0 && |
2451 | timespec_load(&st.st_mtim) != u->fragment_mtime) | |
5f4b19f4 LP |
2452 | return true; |
2453 | } | |
2454 | ||
1b64d026 LP |
2455 | if (u->source_path) { |
2456 | zero(st); | |
2457 | if (stat(u->source_path, &st) < 0) | |
2458 | return true; | |
2459 | ||
2460 | if (u->source_mtime > 0 && | |
2461 | timespec_load(&st.st_mtim) != u->source_mtime) | |
2462 | return true; | |
2463 | } | |
5f4b19f4 | 2464 | |
ae7a7182 OS |
2465 | t = unit_find_dropin_paths(u); |
2466 | loaded_cnt = strv_length(t); | |
2467 | current_cnt = strv_length(u->dropin_paths); | |
2468 | ||
2469 | if (loaded_cnt == current_cnt) { | |
2470 | if (loaded_cnt == 0) | |
2471 | return false; | |
2472 | ||
2473 | if (strv_overlap(u->dropin_paths, t)) { | |
2474 | STRV_FOREACH(path, u->dropin_paths) { | |
2475 | zero(st); | |
2476 | if (stat(*path, &st) < 0) | |
2477 | return true; | |
2478 | ||
2479 | if (u->dropin_mtime > 0 && | |
2480 | timespec_load(&st.st_mtim) > u->dropin_mtime) | |
2481 | return true; | |
2482 | } | |
2483 | ||
2484 | return false; | |
2485 | } else | |
2486 | return true; | |
2487 | } else | |
2488 | return true; | |
45fb0699 LP |
2489 | } |
2490 | ||
fdf20a31 | 2491 | void unit_reset_failed(Unit *u) { |
5632e374 LP |
2492 | assert(u); |
2493 | ||
fdf20a31 MM |
2494 | if (UNIT_VTABLE(u)->reset_failed) |
2495 | UNIT_VTABLE(u)->reset_failed(u); | |
5632e374 LP |
2496 | } |
2497 | ||
a7f241db LP |
2498 | Unit *unit_following(Unit *u) { |
2499 | assert(u); | |
2500 | ||
2501 | if (UNIT_VTABLE(u)->following) | |
2502 | return UNIT_VTABLE(u)->following(u); | |
2503 | ||
2504 | return NULL; | |
2505 | } | |
2506 | ||
31afa0a4 | 2507 | bool unit_stop_pending(Unit *u) { |
18ffdfda LP |
2508 | assert(u); |
2509 | ||
31afa0a4 LP |
2510 | /* This call does check the current state of the unit. It's |
2511 | * hence useful to be called from state change calls of the | |
2512 | * unit itself, where the state isn't updated yet. This is | |
2513 | * different from unit_inactive_or_pending() which checks both | |
2514 | * the current state and for a queued job. */ | |
18ffdfda | 2515 | |
31afa0a4 LP |
2516 | return u->job && u->job->type == JOB_STOP; |
2517 | } | |
2518 | ||
2519 | bool unit_inactive_or_pending(Unit *u) { | |
2520 | assert(u); | |
2521 | ||
2522 | /* Returns true if the unit is inactive or going down */ | |
18ffdfda | 2523 | |
d956ac29 LP |
2524 | if (UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))) |
2525 | return true; | |
2526 | ||
31afa0a4 | 2527 | if (unit_stop_pending(u)) |
18ffdfda LP |
2528 | return true; |
2529 | ||
2530 | return false; | |
2531 | } | |
2532 | ||
31afa0a4 | 2533 | bool unit_active_or_pending(Unit *u) { |
f976f3f6 LP |
2534 | assert(u); |
2535 | ||
f60c2665 | 2536 | /* Returns true if the unit is active or going up */ |
f976f3f6 LP |
2537 | |
2538 | if (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) | |
2539 | return true; | |
2540 | ||
ac155bb8 MS |
2541 | if (u->job && |
2542 | (u->job->type == JOB_START || | |
2543 | u->job->type == JOB_RELOAD_OR_START || | |
2544 | u->job->type == JOB_RESTART)) | |
f976f3f6 LP |
2545 | return true; |
2546 | ||
2547 | return false; | |
2548 | } | |
2549 | ||
c74f17d9 | 2550 | int unit_kill(Unit *u, KillWho w, int signo, DBusError *error) { |
8a0867d6 LP |
2551 | assert(u); |
2552 | assert(w >= 0 && w < _KILL_WHO_MAX); | |
8a0867d6 LP |
2553 | assert(signo > 0); |
2554 | assert(signo < _NSIG); | |
2555 | ||
8a0867d6 LP |
2556 | if (!UNIT_VTABLE(u)->kill) |
2557 | return -ENOTSUP; | |
2558 | ||
c74f17d9 | 2559 | return UNIT_VTABLE(u)->kill(u, w, signo, error); |
8a0867d6 LP |
2560 | } |
2561 | ||
82659fd7 LP |
2562 | static Set *unit_pid_set(pid_t main_pid, pid_t control_pid) { |
2563 | Set *pid_set; | |
2564 | int r; | |
2565 | ||
2566 | pid_set = set_new(trivial_hash_func, trivial_compare_func); | |
2567 | if (!pid_set) | |
2568 | return NULL; | |
2569 | ||
2570 | /* Exclude the main/control pids from being killed via the cgroup */ | |
2571 | if (main_pid > 0) { | |
2572 | r = set_put(pid_set, LONG_TO_PTR(main_pid)); | |
2573 | if (r < 0) | |
2574 | goto fail; | |
2575 | } | |
2576 | ||
2577 | if (control_pid > 0) { | |
2578 | r = set_put(pid_set, LONG_TO_PTR(control_pid)); | |
2579 | if (r < 0) | |
2580 | goto fail; | |
2581 | } | |
2582 | ||
2583 | return pid_set; | |
2584 | ||
2585 | fail: | |
2586 | set_free(pid_set); | |
2587 | return NULL; | |
2588 | } | |
2589 | ||
d91c34f2 LP |
2590 | int unit_kill_common( |
2591 | Unit *u, | |
2592 | KillWho who, | |
2593 | int signo, | |
2594 | pid_t main_pid, | |
2595 | pid_t control_pid, | |
2596 | DBusError *error) { | |
2597 | ||
814cc562 MS |
2598 | int r = 0; |
2599 | ||
2600 | if (who == KILL_MAIN && main_pid <= 0) { | |
2601 | if (main_pid < 0) | |
2602 | dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "%s units have no main processes", unit_type_to_string(u->type)); | |
2603 | else | |
2604 | dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No main process to kill"); | |
2605 | return -ESRCH; | |
2606 | } | |
2607 | ||
2608 | if (who == KILL_CONTROL && control_pid <= 0) { | |
2609 | if (control_pid < 0) | |
2610 | dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "%s units have no control processes", unit_type_to_string(u->type)); | |
2611 | else | |
2612 | dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill"); | |
2613 | return -ESRCH; | |
2614 | } | |
2615 | ||
2616 | if (who == KILL_CONTROL || who == KILL_ALL) | |
2617 | if (control_pid > 0) | |
2618 | if (kill(control_pid, signo) < 0) | |
2619 | r = -errno; | |
2620 | ||
2621 | if (who == KILL_MAIN || who == KILL_ALL) | |
2622 | if (main_pid > 0) | |
2623 | if (kill(main_pid, signo) < 0) | |
2624 | r = -errno; | |
2625 | ||
4ad49000 | 2626 | if (who == KILL_ALL && u->cgroup_path) { |
814cc562 MS |
2627 | _cleanup_set_free_ Set *pid_set = NULL; |
2628 | int q; | |
2629 | ||
82659fd7 LP |
2630 | /* Exclude the main/control pids from being killed via the cgroup */ |
2631 | pid_set = unit_pid_set(main_pid, control_pid); | |
814cc562 MS |
2632 | if (!pid_set) |
2633 | return -ENOMEM; | |
2634 | ||
4ad49000 | 2635 | q = cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, signo, false, true, false, pid_set); |
814cc562 MS |
2636 | if (q < 0 && q != -EAGAIN && q != -ESRCH && q != -ENOENT) |
2637 | r = q; | |
2638 | } | |
2639 | ||
2640 | return r; | |
2641 | } | |
2642 | ||
6210e7fc LP |
2643 | int unit_following_set(Unit *u, Set **s) { |
2644 | assert(u); | |
2645 | assert(s); | |
2646 | ||
2647 | if (UNIT_VTABLE(u)->following_set) | |
2648 | return UNIT_VTABLE(u)->following_set(u, s); | |
2649 | ||
2650 | *s = NULL; | |
2651 | return 0; | |
2652 | } | |
2653 | ||
a4375746 LP |
2654 | UnitFileState unit_get_unit_file_state(Unit *u) { |
2655 | assert(u); | |
2656 | ||
ac155bb8 MS |
2657 | if (u->unit_file_state < 0 && u->fragment_path) |
2658 | u->unit_file_state = unit_file_get_state( | |
67445f4e | 2659 | u->manager->running_as == SYSTEMD_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER, |
9eb977db | 2660 | NULL, path_get_file_name(u->fragment_path)); |
a4375746 | 2661 | |
ac155bb8 | 2662 | return u->unit_file_state; |
a4375746 LP |
2663 | } |
2664 | ||
57020a3a LP |
2665 | Unit* unit_ref_set(UnitRef *ref, Unit *u) { |
2666 | assert(ref); | |
2667 | assert(u); | |
2668 | ||
2669 | if (ref->unit) | |
2670 | unit_ref_unset(ref); | |
2671 | ||
2672 | ref->unit = u; | |
ac155bb8 | 2673 | LIST_PREPEND(UnitRef, refs, u->refs, ref); |
57020a3a LP |
2674 | return u; |
2675 | } | |
2676 | ||
2677 | void unit_ref_unset(UnitRef *ref) { | |
2678 | assert(ref); | |
2679 | ||
2680 | if (!ref->unit) | |
2681 | return; | |
2682 | ||
ac155bb8 | 2683 | LIST_REMOVE(UnitRef, refs, ref->unit->refs, ref); |
57020a3a LP |
2684 | ref->unit = NULL; |
2685 | } | |
2686 | ||
a57f7e2c | 2687 | int unit_add_mount_links(Unit *u) { |
7c8fa05c | 2688 | char **i; |
a57f7e2c | 2689 | int r; |
7c8fa05c LP |
2690 | |
2691 | assert(u); | |
7c8fa05c LP |
2692 | |
2693 | STRV_FOREACH(i, u->requires_mounts_for) { | |
a57f7e2c | 2694 | char prefix[strlen(*i) + 1]; |
7c8fa05c | 2695 | |
a57f7e2c LP |
2696 | PATH_FOREACH_PREFIX_MORE(prefix, *i) { |
2697 | Unit *m; | |
7c8fa05c | 2698 | |
a57f7e2c LP |
2699 | r = manager_get_unit_by_path(u->manager, prefix, ".mount", &m); |
2700 | if (r < 0) | |
2701 | return r; | |
2702 | if (r == 0) | |
2703 | continue; | |
2704 | if (m == u) | |
2705 | continue; | |
7c8fa05c | 2706 | |
a57f7e2c LP |
2707 | if (m->load_state != UNIT_LOADED) |
2708 | continue; | |
7c8fa05c | 2709 | |
a57f7e2c LP |
2710 | r = unit_add_dependency(u, UNIT_AFTER, m, true); |
2711 | if (r < 0) | |
2712 | return r; | |
7c8fa05c | 2713 | |
a57f7e2c LP |
2714 | if (m->fragment_path) { |
2715 | r = unit_add_dependency(u, UNIT_REQUIRES, m, true); | |
2716 | if (r < 0) | |
2717 | return r; | |
2718 | } | |
2719 | } | |
7c8fa05c LP |
2720 | } |
2721 | ||
2722 | return 0; | |
2723 | } | |
2724 | ||
cba6e062 LP |
2725 | int unit_exec_context_defaults(Unit *u, ExecContext *c) { |
2726 | unsigned i; | |
2727 | int r; | |
2728 | ||
e06c73cc LP |
2729 | assert(u); |
2730 | assert(c); | |
2731 | ||
cba6e062 | 2732 | /* This only copies in the ones that need memory */ |
cba6e062 LP |
2733 | for (i = 0; i < RLIMIT_NLIMITS; i++) |
2734 | if (u->manager->rlimit[i] && !c->rlimit[i]) { | |
2735 | c->rlimit[i] = newdup(struct rlimit, u->manager->rlimit[i], 1); | |
2736 | if (!c->rlimit[i]) | |
2737 | return -ENOMEM; | |
2738 | } | |
2739 | ||
67445f4e | 2740 | if (u->manager->running_as == SYSTEMD_USER && |
cba6e062 | 2741 | !c->working_directory) { |
e06c73cc | 2742 | |
cba6e062 LP |
2743 | r = get_home_dir(&c->working_directory); |
2744 | if (r < 0) | |
2745 | return r; | |
2746 | } | |
2747 | ||
2748 | return 0; | |
e06c73cc LP |
2749 | } |
2750 | ||
3ef63c31 LP |
2751 | ExecContext *unit_get_exec_context(Unit *u) { |
2752 | size_t offset; | |
2753 | assert(u); | |
2754 | ||
2755 | offset = UNIT_VTABLE(u)->exec_context_offset; | |
2756 | if (offset <= 0) | |
2757 | return NULL; | |
2758 | ||
2759 | return (ExecContext*) ((uint8_t*) u + offset); | |
2760 | } | |
2761 | ||
4ad49000 LP |
2762 | CGroupContext *unit_get_cgroup_context(Unit *u) { |
2763 | size_t offset; | |
2764 | ||
2765 | offset = UNIT_VTABLE(u)->cgroup_context_offset; | |
2766 | if (offset <= 0) | |
2767 | return NULL; | |
2768 | ||
2769 | return (CGroupContext*) ((uint8_t*) u + offset); | |
2770 | } | |
2771 | ||
8e2af478 | 2772 | static int drop_in_file(Unit *u, UnitSetPropertiesMode mode, const char *name, char **_p, char **_q) { |
b9ec9359 | 2773 | _cleanup_free_ char *b = NULL; |
26d04f86 LP |
2774 | char *p, *q; |
2775 | int r; | |
2776 | ||
71645aca | 2777 | assert(u); |
26d04f86 LP |
2778 | assert(name); |
2779 | assert(_p); | |
2780 | assert(_q); | |
8e2af478 | 2781 | assert(mode & (UNIT_PERSISTENT|UNIT_RUNTIME)); |
71645aca | 2782 | |
b9ec9359 LP |
2783 | b = xescape(name, "/."); |
2784 | if (!b) | |
2785 | return -ENOMEM; | |
2786 | ||
2787 | if (!filename_is_safe(b)) | |
71645aca LP |
2788 | return -EINVAL; |
2789 | ||
26d04f86 LP |
2790 | if (u->manager->running_as == SYSTEMD_USER) { |
2791 | _cleanup_free_ char *c = NULL; | |
2792 | ||
2793 | r = user_config_home(&c); | |
2794 | if (r < 0) | |
2795 | return r; | |
2796 | if (r == 0) | |
2797 | return -ENOENT; | |
2798 | ||
2799 | p = strjoin(c, "/", u->id, ".d", NULL); | |
c2756a68 | 2800 | } else if (mode & UNIT_PERSISTENT) |
26d04f86 | 2801 | p = strjoin("/etc/systemd/system/", u->id, ".d", NULL); |
8e2af478 LP |
2802 | else |
2803 | p = strjoin("/run/systemd/system/", u->id, ".d", NULL); | |
71645aca LP |
2804 | if (!p) |
2805 | return -ENOMEM; | |
2806 | ||
b9ec9359 | 2807 | q = strjoin(p, "/90-", b, ".conf", NULL); |
26d04f86 LP |
2808 | if (!q) { |
2809 | free(p); | |
71645aca | 2810 | return -ENOMEM; |
26d04f86 | 2811 | } |
71645aca | 2812 | |
26d04f86 LP |
2813 | *_p = p; |
2814 | *_q = q; | |
2815 | return 0; | |
71645aca LP |
2816 | } |
2817 | ||
8e2af478 | 2818 | int unit_write_drop_in(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data) { |
71645aca | 2819 | _cleanup_free_ char *p = NULL, *q = NULL; |
26d04f86 | 2820 | int r; |
71645aca LP |
2821 | |
2822 | assert(u); | |
b42defe3 LP |
2823 | assert(name); |
2824 | assert(data); | |
71645aca | 2825 | |
8e2af478 LP |
2826 | if (!(mode & (UNIT_PERSISTENT|UNIT_RUNTIME))) |
2827 | return 0; | |
2828 | ||
2829 | r = drop_in_file(u, mode, name, &p, &q); | |
26d04f86 LP |
2830 | if (r < 0) |
2831 | return r; | |
71645aca | 2832 | |
26d04f86 | 2833 | mkdir_p(p, 0755); |
574d5f2d | 2834 | return write_string_file_atomic_label(q, data); |
26d04f86 | 2835 | } |
71645aca | 2836 | |
b9ec9359 LP |
2837 | int unit_write_drop_in_format(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *format, ...) { |
2838 | _cleanup_free_ char *p = NULL; | |
2839 | va_list ap; | |
2840 | int r; | |
2841 | ||
2842 | assert(u); | |
2843 | assert(name); | |
2844 | assert(format); | |
2845 | ||
2846 | if (!(mode & (UNIT_PERSISTENT|UNIT_RUNTIME))) | |
2847 | return 0; | |
2848 | ||
2849 | va_start(ap, format); | |
2850 | r = vasprintf(&p, format, ap); | |
2851 | va_end(ap); | |
2852 | ||
2853 | if (r < 0) | |
2854 | return -ENOMEM; | |
2855 | ||
2856 | return unit_write_drop_in(u, mode, name, p); | |
2857 | } | |
2858 | ||
2859 | int unit_write_drop_in_private(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data) { | |
b42defe3 LP |
2860 | _cleanup_free_ char *ndata = NULL; |
2861 | ||
2862 | assert(u); | |
2863 | assert(name); | |
2864 | assert(data); | |
2865 | ||
2866 | if (!UNIT_VTABLE(u)->private_section) | |
2867 | return -EINVAL; | |
2868 | ||
b9ec9359 LP |
2869 | if (!(mode & (UNIT_PERSISTENT|UNIT_RUNTIME))) |
2870 | return 0; | |
2871 | ||
b42defe3 LP |
2872 | ndata = strjoin("[", UNIT_VTABLE(u)->private_section, "]\n", data, NULL); |
2873 | if (!ndata) | |
2874 | return -ENOMEM; | |
2875 | ||
2876 | return unit_write_drop_in(u, mode, name, ndata); | |
2877 | } | |
2878 | ||
b9ec9359 LP |
2879 | int unit_write_drop_in_private_format(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *format, ...) { |
2880 | _cleanup_free_ char *p = NULL; | |
2881 | va_list ap; | |
2882 | int r; | |
2883 | ||
2884 | assert(u); | |
2885 | assert(name); | |
2886 | assert(format); | |
2887 | ||
2888 | if (!(mode & (UNIT_PERSISTENT|UNIT_RUNTIME))) | |
2889 | return 0; | |
2890 | ||
2891 | va_start(ap, format); | |
2892 | r = vasprintf(&p, format, ap); | |
2893 | va_end(ap); | |
2894 | ||
2895 | if (r < 0) | |
2896 | return -ENOMEM; | |
2897 | ||
2898 | return unit_write_drop_in_private(u, mode, name, p); | |
2899 | } | |
2900 | ||
8e2af478 | 2901 | int unit_remove_drop_in(Unit *u, UnitSetPropertiesMode mode, const char *name) { |
26d04f86 LP |
2902 | _cleanup_free_ char *p = NULL, *q = NULL; |
2903 | int r; | |
71645aca | 2904 | |
26d04f86 | 2905 | assert(u); |
71645aca | 2906 | |
8e2af478 LP |
2907 | if (!(mode & (UNIT_PERSISTENT|UNIT_RUNTIME))) |
2908 | return 0; | |
2909 | ||
2910 | r = drop_in_file(u, mode, name, &p, &q); | |
71645aca | 2911 | if (unlink(q) < 0) |
241da328 | 2912 | r = errno == ENOENT ? 0 : -errno; |
26d04f86 | 2913 | else |
241da328 | 2914 | r = 1; |
71645aca LP |
2915 | |
2916 | rmdir(p); | |
26d04f86 | 2917 | return r; |
71645aca LP |
2918 | } |
2919 | ||
c2756a68 LP |
2920 | int unit_make_transient(Unit *u) { |
2921 | int r; | |
2922 | ||
2923 | assert(u); | |
2924 | ||
2925 | u->load_state = UNIT_STUB; | |
2926 | u->load_error = 0; | |
2927 | u->transient = true; | |
2928 | ||
2929 | free(u->fragment_path); | |
2930 | u->fragment_path = NULL; | |
2931 | ||
2932 | if (u->manager->running_as == SYSTEMD_USER) { | |
2933 | _cleanup_free_ char *c = NULL; | |
2934 | ||
2935 | r = user_config_home(&c); | |
2936 | if (r < 0) | |
2937 | return r; | |
2938 | if (r == 0) | |
2939 | return -ENOENT; | |
2940 | ||
2941 | u->fragment_path = strjoin(c, "/", u->id, NULL); | |
2942 | if (!u->fragment_path) | |
2943 | return -ENOMEM; | |
2944 | ||
2945 | mkdir_p(c, 0755); | |
2946 | } else { | |
2947 | u->fragment_path = strappend("/run/systemd/system/", u->id); | |
2948 | if (!u->fragment_path) | |
2949 | return -ENOMEM; | |
2950 | ||
2951 | mkdir_p("/run/systemd/system", 0755); | |
2952 | } | |
2953 | ||
2954 | return write_string_file_atomic_label(u->fragment_path, "# Transient stub"); | |
2955 | } | |
2956 | ||
cd2086fe LP |
2957 | int unit_kill_context( |
2958 | Unit *u, | |
2959 | KillContext *c, | |
2960 | bool sigkill, | |
2961 | pid_t main_pid, | |
2962 | pid_t control_pid, | |
2963 | bool main_pid_alien) { | |
2964 | ||
2965 | int sig, wait_for_exit = 0, r; | |
2966 | ||
2967 | assert(u); | |
2968 | assert(c); | |
2969 | ||
2970 | if (c->kill_mode == KILL_NONE) | |
2971 | return 0; | |
2972 | ||
2973 | sig = sigkill ? SIGKILL : c->kill_signal; | |
2974 | ||
2975 | if (main_pid > 0) { | |
2976 | r = kill_and_sigcont(main_pid, sig); | |
2977 | ||
2978 | if (r < 0 && r != -ESRCH) { | |
2979 | _cleanup_free_ char *comm = NULL; | |
2980 | get_process_comm(main_pid, &comm); | |
2981 | ||
2982 | log_warning_unit(u->id, "Failed to kill main process %li (%s): %s", | |
2983 | (long) main_pid, strna(comm), strerror(-r)); | |
82659fd7 | 2984 | } else { |
cd2086fe | 2985 | wait_for_exit = !main_pid_alien; |
82659fd7 LP |
2986 | |
2987 | if (c->send_sighup) | |
2988 | kill(main_pid, SIGHUP); | |
2989 | } | |
cd2086fe LP |
2990 | } |
2991 | ||
2992 | if (control_pid > 0) { | |
2993 | r = kill_and_sigcont(control_pid, sig); | |
2994 | ||
2995 | if (r < 0 && r != -ESRCH) { | |
2996 | _cleanup_free_ char *comm = NULL; | |
2997 | get_process_comm(control_pid, &comm); | |
2998 | ||
2999 | log_warning_unit(u->id, | |
3000 | "Failed to kill control process %li (%s): %s", | |
3001 | (long) control_pid, strna(comm), strerror(-r)); | |
82659fd7 | 3002 | } else { |
cd2086fe | 3003 | wait_for_exit = true; |
82659fd7 LP |
3004 | |
3005 | if (c->send_sighup) | |
3006 | kill(control_pid, SIGHUP); | |
3007 | } | |
cd2086fe LP |
3008 | } |
3009 | ||
4ad49000 | 3010 | if (c->kill_mode == KILL_CONTROL_GROUP && u->cgroup_path) { |
cd2086fe LP |
3011 | _cleanup_set_free_ Set *pid_set = NULL; |
3012 | ||
82659fd7 LP |
3013 | /* Exclude the main/control pids from being killed via the cgroup */ |
3014 | pid_set = unit_pid_set(main_pid, control_pid); | |
cd2086fe LP |
3015 | if (!pid_set) |
3016 | return -ENOMEM; | |
3017 | ||
4ad49000 | 3018 | r = cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, sig, true, true, false, pid_set); |
cd2086fe LP |
3019 | if (r < 0) { |
3020 | if (r != -EAGAIN && r != -ESRCH && r != -ENOENT) | |
3021 | log_warning_unit(u->id, "Failed to kill control group: %s", strerror(-r)); | |
82659fd7 | 3022 | } else if (r > 0) { |
cd2086fe | 3023 | wait_for_exit = true; |
82659fd7 LP |
3024 | if (c->send_sighup) { |
3025 | set_free(pid_set); | |
3026 | ||
3027 | pid_set = unit_pid_set(main_pid, control_pid); | |
3028 | if (!pid_set) | |
3029 | return -ENOMEM; | |
3030 | ||
3031 | cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, SIGHUP, true, true, false, pid_set); | |
3032 | } | |
3033 | } | |
cd2086fe LP |
3034 | } |
3035 | ||
3036 | return wait_for_exit; | |
3037 | } | |
3038 | ||
a57f7e2c LP |
3039 | int unit_require_mounts_for(Unit *u, const char *path) { |
3040 | char prefix[strlen(path) + 1], *p; | |
3041 | int r; | |
3042 | ||
3043 | assert(u); | |
3044 | assert(path); | |
3045 | ||
3046 | /* Registers a unit for requiring a certain path and all its | |
3047 | * prefixes. We keep a simple array of these paths in the | |
3048 | * unit, since its usually short. However, we build a prefix | |
3049 | * table for all possible prefixes so that new appearing mount | |
3050 | * units can easily determine which units to make themselves a | |
3051 | * dependency of. */ | |
3052 | ||
3053 | p = strdup(path); | |
3054 | if (!p) | |
3055 | return -ENOMEM; | |
3056 | ||
3057 | path_kill_slashes(p); | |
3058 | ||
3059 | if (!path_is_absolute(p)) { | |
3060 | free(p); | |
3061 | return -EINVAL; | |
3062 | } | |
3063 | ||
3064 | if (!path_is_safe(p)) { | |
3065 | free(p); | |
3066 | return -EPERM; | |
3067 | } | |
3068 | ||
3069 | if (strv_contains(u->requires_mounts_for, p)) { | |
3070 | free(p); | |
3071 | return 0; | |
3072 | } | |
3073 | ||
3074 | r = strv_push(&u->requires_mounts_for, p); | |
3075 | if (r < 0) { | |
3076 | free(p); | |
3077 | return r; | |
3078 | } | |
3079 | ||
3080 | PATH_FOREACH_PREFIX_MORE(prefix, p) { | |
3081 | Set *x; | |
3082 | ||
3083 | x = hashmap_get(u->manager->units_requiring_mounts_for, prefix); | |
3084 | if (!x) { | |
3085 | char *q; | |
3086 | ||
3087 | if (!u->manager->units_requiring_mounts_for) { | |
3088 | u->manager->units_requiring_mounts_for = hashmap_new(string_hash_func, string_compare_func); | |
3089 | if (!u->manager->units_requiring_mounts_for) | |
3090 | return -ENOMEM; | |
3091 | } | |
3092 | ||
3093 | q = strdup(prefix); | |
3094 | if (!q) | |
3095 | return -ENOMEM; | |
3096 | ||
3097 | x = set_new(NULL, NULL); | |
3098 | if (!x) { | |
3099 | free(q); | |
3100 | return -ENOMEM; | |
3101 | } | |
3102 | ||
3103 | r = hashmap_put(u->manager->units_requiring_mounts_for, q, x); | |
3104 | if (r < 0) { | |
3105 | free(q); | |
3106 | set_free(x); | |
3107 | return r; | |
3108 | } | |
3109 | } | |
3110 | ||
3111 | r = set_put(x, u); | |
3112 | if (r < 0) | |
3113 | return r; | |
3114 | } | |
3115 | ||
3116 | return 0; | |
3117 | } | |
3118 | ||
94f04347 LP |
3119 | static const char* const unit_active_state_table[_UNIT_ACTIVE_STATE_MAX] = { |
3120 | [UNIT_ACTIVE] = "active", | |
032ff4af | 3121 | [UNIT_RELOADING] = "reloading", |
94f04347 | 3122 | [UNIT_INACTIVE] = "inactive", |
fdf20a31 | 3123 | [UNIT_FAILED] = "failed", |
94f04347 LP |
3124 | [UNIT_ACTIVATING] = "activating", |
3125 | [UNIT_DEACTIVATING] = "deactivating" | |
3126 | }; | |
3127 | ||
3128 | DEFINE_STRING_TABLE_LOOKUP(unit_active_state, UnitActiveState); | |
3129 | ||
3130 | static const char* const unit_dependency_table[_UNIT_DEPENDENCY_MAX] = { | |
3131 | [UNIT_REQUIRES] = "Requires", | |
9e2f7c11 | 3132 | [UNIT_REQUIRES_OVERRIDABLE] = "RequiresOverridable", |
94f04347 | 3133 | [UNIT_REQUISITE] = "Requisite", |
9e2f7c11 | 3134 | [UNIT_REQUISITE_OVERRIDABLE] = "RequisiteOverridable", |
ac6a4abe MS |
3135 | [UNIT_WANTS] = "Wants", |
3136 | [UNIT_BINDS_TO] = "BindsTo", | |
3137 | [UNIT_PART_OF] = "PartOf", | |
94f04347 | 3138 | [UNIT_REQUIRED_BY] = "RequiredBy", |
9e2f7c11 | 3139 | [UNIT_REQUIRED_BY_OVERRIDABLE] = "RequiredByOverridable", |
94f04347 | 3140 | [UNIT_WANTED_BY] = "WantedBy", |
ac6a4abe MS |
3141 | [UNIT_BOUND_BY] = "BoundBy", |
3142 | [UNIT_CONSISTS_OF] = "ConsistsOf", | |
94f04347 | 3143 | [UNIT_CONFLICTS] = "Conflicts", |
69dd2852 | 3144 | [UNIT_CONFLICTED_BY] = "ConflictedBy", |
94f04347 LP |
3145 | [UNIT_BEFORE] = "Before", |
3146 | [UNIT_AFTER] = "After", | |
57020a3a LP |
3147 | [UNIT_ON_FAILURE] = "OnFailure", |
3148 | [UNIT_TRIGGERS] = "Triggers", | |
4dcc1cb4 | 3149 | [UNIT_TRIGGERED_BY] = "TriggeredBy", |
7f2cddae | 3150 | [UNIT_PROPAGATES_RELOAD_TO] = "PropagatesReloadTo", |
ac6a4abe MS |
3151 | [UNIT_RELOAD_PROPAGATED_FROM] = "ReloadPropagatedFrom", |
3152 | [UNIT_REFERENCES] = "References", | |
3153 | [UNIT_REFERENCED_BY] = "ReferencedBy", | |
94f04347 LP |
3154 | }; |
3155 | ||
3156 | DEFINE_STRING_TABLE_LOOKUP(unit_dependency, UnitDependency); |