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d6c9574f | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
87f0e418 | 2 | |
a7334b09 LP |
3 | /*** |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
9 | under the terms of the GNU Lesser General Public License as published by |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
11 | (at your option) any later version. |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 16 | Lesser General Public License for more details. |
a7334b09 | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
87f0e418 LP |
22 | #include <assert.h> |
23 | #include <errno.h> | |
24 | #include <string.h> | |
25 | #include <sys/epoll.h> | |
26 | #include <sys/timerfd.h> | |
27 | #include <sys/poll.h> | |
0301abf4 LP |
28 | #include <stdlib.h> |
29 | #include <unistd.h> | |
45fb0699 | 30 | #include <sys/stat.h> |
87f0e418 | 31 | |
718db961 LP |
32 | #include "sd-id128.h" |
33 | #include "sd-messages.h" | |
87f0e418 LP |
34 | #include "set.h" |
35 | #include "unit.h" | |
36 | #include "macro.h" | |
37 | #include "strv.h" | |
9eb977db | 38 | #include "path-util.h" |
87f0e418 LP |
39 | #include "load-fragment.h" |
40 | #include "load-dropin.h" | |
41 | #include "log.h" | |
9e2f7c11 | 42 | #include "unit-name.h" |
4139c1b2 | 43 | #include "dbus-unit.h" |
514f4ef5 | 44 | #include "special.h" |
c6c18be3 | 45 | #include "cgroup-util.h" |
4927fcae | 46 | #include "missing.h" |
71645aca | 47 | #include "mkdir.h" |
a5c32cff HH |
48 | #include "label.h" |
49 | #include "fileio-label.h" | |
814cc562 | 50 | #include "bus-errors.h" |
718db961 | 51 | #include "dbus.h" |
613b411c | 52 | #include "execute.h" |
87f0e418 LP |
53 | |
54 | const UnitVTable * const unit_vtable[_UNIT_TYPE_MAX] = { | |
55 | [UNIT_SERVICE] = &service_vtable, | |
87f0e418 | 56 | [UNIT_SOCKET] = &socket_vtable, |
e821075a | 57 | [UNIT_BUSNAME] = &busname_vtable, |
87f0e418 | 58 | [UNIT_TARGET] = &target_vtable, |
e821075a | 59 | [UNIT_SNAPSHOT] = &snapshot_vtable, |
87f0e418 LP |
60 | [UNIT_DEVICE] = &device_vtable, |
61 | [UNIT_MOUNT] = &mount_vtable, | |
62 | [UNIT_AUTOMOUNT] = &automount_vtable, | |
01f78473 | 63 | [UNIT_SWAP] = &swap_vtable, |
e821075a | 64 | [UNIT_TIMER] = &timer_vtable, |
a016b922 | 65 | [UNIT_PATH] = &path_vtable, |
6c12b52e LP |
66 | [UNIT_SLICE] = &slice_vtable, |
67 | [UNIT_SCOPE] = &scope_vtable | |
87f0e418 LP |
68 | }; |
69 | ||
7d17cfbc | 70 | Unit *unit_new(Manager *m, size_t size) { |
87f0e418 LP |
71 | Unit *u; |
72 | ||
73 | assert(m); | |
ac155bb8 | 74 | assert(size >= sizeof(Unit)); |
87f0e418 | 75 | |
7d17cfbc MS |
76 | u = malloc0(size); |
77 | if (!u) | |
87f0e418 LP |
78 | return NULL; |
79 | ||
ac155bb8 MS |
80 | u->names = set_new(string_hash_func, string_compare_func); |
81 | if (!u->names) { | |
87f0e418 LP |
82 | free(u); |
83 | return NULL; | |
84 | } | |
85 | ||
ac155bb8 MS |
86 | u->manager = m; |
87 | u->type = _UNIT_TYPE_INVALID; | |
88 | u->deserialized_job = _JOB_TYPE_INVALID; | |
89 | u->default_dependencies = true; | |
90 | u->unit_file_state = _UNIT_FILE_STATE_INVALID; | |
d420282b | 91 | u->on_failure_job_mode = JOB_REPLACE; |
87f0e418 LP |
92 | |
93 | return u; | |
94 | } | |
95 | ||
f278026d LP |
96 | bool unit_has_name(Unit *u, const char *name) { |
97 | assert(u); | |
98 | assert(name); | |
99 | ||
ac155bb8 | 100 | return !!set_get(u->names, (char*) name); |
f278026d LP |
101 | } |
102 | ||
87f0e418 LP |
103 | int unit_add_name(Unit *u, const char *text) { |
104 | UnitType t; | |
276c3e78 | 105 | char *s, *i = NULL; |
87f0e418 LP |
106 | int r; |
107 | ||
108 | assert(u); | |
109 | assert(text); | |
110 | ||
9e2f7c11 | 111 | if (unit_name_is_template(text)) { |
ac155bb8 | 112 | if (!u->instance) |
9e2f7c11 | 113 | return -EINVAL; |
87f0e418 | 114 | |
ac155bb8 | 115 | s = unit_name_replace_instance(text, u->instance); |
9e2f7c11 LP |
116 | } else |
117 | s = strdup(text); | |
87f0e418 | 118 | |
9e2f7c11 LP |
119 | if (!s) |
120 | return -ENOMEM; | |
87f0e418 | 121 | |
f78e6385 | 122 | if (!unit_name_is_valid(s, TEMPLATE_INVALID)) { |
9e2f7c11 LP |
123 | r = -EINVAL; |
124 | goto fail; | |
125 | } | |
e537352b | 126 | |
9e2f7c11 | 127 | assert_se((t = unit_name_to_type(s)) >= 0); |
87f0e418 | 128 | |
ac155bb8 | 129 | if (u->type != _UNIT_TYPE_INVALID && t != u->type) { |
9e2f7c11 LP |
130 | r = -EINVAL; |
131 | goto fail; | |
132 | } | |
87f0e418 | 133 | |
e48614c4 ZJS |
134 | r = unit_name_to_instance(s, &i); |
135 | if (r < 0) | |
9e2f7c11 | 136 | goto fail; |
87f0e418 | 137 | |
796ba554 LP |
138 | if (i && unit_vtable[t]->no_instances) { |
139 | r = -EINVAL; | |
9e2f7c11 | 140 | goto fail; |
796ba554 | 141 | } |
9e2f7c11 | 142 | |
276c3e78 LP |
143 | /* Ensure that this unit is either instanced or not instanced, |
144 | * but not both. */ | |
ac155bb8 | 145 | if (u->type != _UNIT_TYPE_INVALID && !u->instance != !i) { |
9e2f7c11 LP |
146 | r = -EINVAL; |
147 | goto fail; | |
148 | } | |
149 | ||
150 | if (unit_vtable[t]->no_alias && | |
ac155bb8 MS |
151 | !set_isempty(u->names) && |
152 | !set_get(u->names, s)) { | |
9e2f7c11 LP |
153 | r = -EEXIST; |
154 | goto fail; | |
155 | } | |
156 | ||
ac155bb8 | 157 | if (hashmap_size(u->manager->units) >= MANAGER_MAX_NAMES) { |
4f0f902f LP |
158 | r = -E2BIG; |
159 | goto fail; | |
160 | } | |
161 | ||
e48614c4 ZJS |
162 | r = set_put(u->names, s); |
163 | if (r < 0) { | |
9e2f7c11 LP |
164 | if (r == -EEXIST) |
165 | r = 0; | |
166 | goto fail; | |
87f0e418 LP |
167 | } |
168 | ||
e48614c4 ZJS |
169 | r = hashmap_put(u->manager->units, s, u); |
170 | if (r < 0) { | |
ac155bb8 | 171 | set_remove(u->names, s); |
9e2f7c11 | 172 | goto fail; |
87f0e418 LP |
173 | } |
174 | ||
ac155bb8 | 175 | if (u->type == _UNIT_TYPE_INVALID) { |
ef734fd6 | 176 | |
ac155bb8 MS |
177 | u->type = t; |
178 | u->id = s; | |
179 | u->instance = i; | |
9e2f7c11 | 180 | |
71fda00f | 181 | LIST_PREPEND(units_by_type, u->manager->units_by_type[t], u); |
e537352b LP |
182 | |
183 | if (UNIT_VTABLE(u)->init) | |
184 | UNIT_VTABLE(u)->init(u); | |
9e2f7c11 LP |
185 | } else |
186 | free(i); | |
87f0e418 | 187 | |
c1e1601e | 188 | unit_add_to_dbus_queue(u); |
87f0e418 | 189 | return 0; |
9e2f7c11 LP |
190 | |
191 | fail: | |
192 | free(s); | |
193 | free(i); | |
194 | ||
195 | return r; | |
87f0e418 LP |
196 | } |
197 | ||
0ae97ec1 | 198 | int unit_choose_id(Unit *u, const char *name) { |
68eda4bd RC |
199 | char *s, *i; |
200 | _cleanup_free_ char *t = NULL; | |
276c3e78 | 201 | int r; |
0ae97ec1 LP |
202 | |
203 | assert(u); | |
204 | assert(name); | |
205 | ||
9e2f7c11 LP |
206 | if (unit_name_is_template(name)) { |
207 | ||
ac155bb8 | 208 | if (!u->instance) |
9e2f7c11 LP |
209 | return -EINVAL; |
210 | ||
e48614c4 ZJS |
211 | t = unit_name_replace_instance(name, u->instance); |
212 | if (!t) | |
9e2f7c11 LP |
213 | return -ENOMEM; |
214 | ||
215 | name = t; | |
216 | } | |
217 | ||
0ae97ec1 | 218 | /* Selects one of the names of this unit as the id */ |
ac155bb8 | 219 | s = set_get(u->names, (char*) name); |
0ae97ec1 | 220 | |
9e2f7c11 | 221 | if (!s) |
0ae97ec1 LP |
222 | return -ENOENT; |
223 | ||
e48614c4 ZJS |
224 | r = unit_name_to_instance(s, &i); |
225 | if (r < 0) | |
276c3e78 LP |
226 | return r; |
227 | ||
ac155bb8 | 228 | u->id = s; |
276c3e78 | 229 | |
ac155bb8 MS |
230 | free(u->instance); |
231 | u->instance = i; | |
276c3e78 | 232 | |
c1e1601e | 233 | unit_add_to_dbus_queue(u); |
9e2f7c11 | 234 | |
0ae97ec1 LP |
235 | return 0; |
236 | } | |
237 | ||
f50e0a01 LP |
238 | int unit_set_description(Unit *u, const char *description) { |
239 | char *s; | |
240 | ||
241 | assert(u); | |
242 | ||
8aec412f LP |
243 | if (isempty(description)) |
244 | s = NULL; | |
245 | else { | |
246 | s = strdup(description); | |
247 | if (!s) | |
248 | return -ENOMEM; | |
249 | } | |
f50e0a01 | 250 | |
ac155bb8 MS |
251 | free(u->description); |
252 | u->description = s; | |
c1e1601e LP |
253 | |
254 | unit_add_to_dbus_queue(u); | |
f50e0a01 LP |
255 | return 0; |
256 | } | |
257 | ||
701cc384 LP |
258 | bool unit_check_gc(Unit *u) { |
259 | assert(u); | |
260 | ||
ac155bb8 | 261 | if (u->load_state == UNIT_STUB) |
b86d44e5 LP |
262 | return true; |
263 | ||
701cc384 LP |
264 | if (UNIT_VTABLE(u)->no_gc) |
265 | return true; | |
266 | ||
ac155bb8 | 267 | if (u->no_gc) |
6c073082 LP |
268 | return true; |
269 | ||
ac155bb8 | 270 | if (u->job) |
701cc384 LP |
271 | return true; |
272 | ||
e0209d83 MS |
273 | if (u->nop_job) |
274 | return true; | |
275 | ||
701cc384 LP |
276 | if (unit_active_state(u) != UNIT_INACTIVE) |
277 | return true; | |
278 | ||
9d576438 LP |
279 | if (u->refs) |
280 | return true; | |
281 | ||
701cc384 LP |
282 | if (UNIT_VTABLE(u)->check_gc) |
283 | if (UNIT_VTABLE(u)->check_gc(u)) | |
284 | return true; | |
285 | ||
286 | return false; | |
287 | } | |
288 | ||
87f0e418 LP |
289 | void unit_add_to_load_queue(Unit *u) { |
290 | assert(u); | |
ac155bb8 | 291 | assert(u->type != _UNIT_TYPE_INVALID); |
87f0e418 | 292 | |
ac155bb8 | 293 | if (u->load_state != UNIT_STUB || u->in_load_queue) |
87f0e418 LP |
294 | return; |
295 | ||
71fda00f | 296 | LIST_PREPEND(load_queue, u->manager->load_queue, u); |
ac155bb8 | 297 | u->in_load_queue = true; |
87f0e418 LP |
298 | } |
299 | ||
23a177ef LP |
300 | void unit_add_to_cleanup_queue(Unit *u) { |
301 | assert(u); | |
302 | ||
ac155bb8 | 303 | if (u->in_cleanup_queue) |
23a177ef LP |
304 | return; |
305 | ||
71fda00f | 306 | LIST_PREPEND(cleanup_queue, u->manager->cleanup_queue, u); |
ac155bb8 | 307 | u->in_cleanup_queue = true; |
23a177ef LP |
308 | } |
309 | ||
701cc384 LP |
310 | void unit_add_to_gc_queue(Unit *u) { |
311 | assert(u); | |
312 | ||
ac155bb8 | 313 | if (u->in_gc_queue || u->in_cleanup_queue) |
701cc384 LP |
314 | return; |
315 | ||
316 | if (unit_check_gc(u)) | |
317 | return; | |
318 | ||
71fda00f | 319 | LIST_PREPEND(gc_queue, u->manager->gc_queue, u); |
ac155bb8 | 320 | u->in_gc_queue = true; |
701cc384 | 321 | |
ac155bb8 | 322 | u->manager->n_in_gc_queue ++; |
701cc384 LP |
323 | } |
324 | ||
c1e1601e LP |
325 | void unit_add_to_dbus_queue(Unit *u) { |
326 | assert(u); | |
ac155bb8 | 327 | assert(u->type != _UNIT_TYPE_INVALID); |
c1e1601e | 328 | |
ac155bb8 | 329 | if (u->load_state == UNIT_STUB || u->in_dbus_queue) |
c1e1601e LP |
330 | return; |
331 | ||
a567261a | 332 | /* Shortcut things if nobody cares */ |
718db961 | 333 | if (set_isempty(u->manager->subscribed)) { |
ac155bb8 | 334 | u->sent_dbus_new_signal = true; |
94b6dfa2 LP |
335 | return; |
336 | } | |
337 | ||
71fda00f | 338 | LIST_PREPEND(dbus_queue, u->manager->dbus_unit_queue, u); |
ac155bb8 | 339 | u->in_dbus_queue = true; |
c1e1601e LP |
340 | } |
341 | ||
87f0e418 LP |
342 | static void bidi_set_free(Unit *u, Set *s) { |
343 | Iterator i; | |
344 | Unit *other; | |
345 | ||
346 | assert(u); | |
347 | ||
348 | /* Frees the set and makes sure we are dropped from the | |
349 | * inverse pointers */ | |
350 | ||
351 | SET_FOREACH(other, s, i) { | |
352 | UnitDependency d; | |
353 | ||
354 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) | |
ac155bb8 | 355 | set_remove(other->dependencies[d], u); |
701cc384 LP |
356 | |
357 | unit_add_to_gc_queue(other); | |
87f0e418 LP |
358 | } |
359 | ||
360 | set_free(s); | |
361 | } | |
362 | ||
c2756a68 LP |
363 | static void unit_remove_transient(Unit *u) { |
364 | char **i; | |
365 | ||
366 | assert(u); | |
367 | ||
368 | if (!u->transient) | |
369 | return; | |
370 | ||
371 | if (u->fragment_path) | |
372 | unlink(u->fragment_path); | |
373 | ||
374 | STRV_FOREACH(i, u->dropin_paths) { | |
375 | _cleanup_free_ char *p = NULL; | |
376 | int r; | |
377 | ||
378 | unlink(*i); | |
379 | ||
380 | r = path_get_parent(*i, &p); | |
381 | if (r >= 0) | |
382 | rmdir(p); | |
383 | } | |
384 | } | |
385 | ||
a57f7e2c LP |
386 | static void unit_free_requires_mounts_for(Unit *u) { |
387 | char **j; | |
388 | ||
389 | STRV_FOREACH(j, u->requires_mounts_for) { | |
390 | char s[strlen(*j) + 1]; | |
391 | ||
392 | PATH_FOREACH_PREFIX_MORE(s, *j) { | |
393 | char *y; | |
394 | Set *x; | |
395 | ||
396 | x = hashmap_get2(u->manager->units_requiring_mounts_for, s, (void**) &y); | |
397 | if (!x) | |
398 | continue; | |
399 | ||
400 | set_remove(x, u); | |
401 | ||
402 | if (set_isempty(x)) { | |
403 | hashmap_remove(u->manager->units_requiring_mounts_for, y); | |
404 | free(y); | |
405 | set_free(x); | |
406 | } | |
407 | } | |
408 | } | |
409 | ||
410 | strv_free(u->requires_mounts_for); | |
411 | u->requires_mounts_for = NULL; | |
412 | } | |
413 | ||
87f0e418 LP |
414 | void unit_free(Unit *u) { |
415 | UnitDependency d; | |
416 | Iterator i; | |
417 | char *t; | |
418 | ||
419 | assert(u); | |
420 | ||
c2756a68 LP |
421 | if (u->manager->n_reloading <= 0) |
422 | unit_remove_transient(u); | |
423 | ||
c1e1601e LP |
424 | bus_unit_send_removed_signal(u); |
425 | ||
ac155bb8 | 426 | if (u->load_state != UNIT_STUB) |
a013b84b LP |
427 | if (UNIT_VTABLE(u)->done) |
428 | UNIT_VTABLE(u)->done(u); | |
429 | ||
a57f7e2c LP |
430 | unit_free_requires_mounts_for(u); |
431 | ||
ac155bb8 MS |
432 | SET_FOREACH(t, u->names, i) |
433 | hashmap_remove_value(u->manager->units, t, u); | |
87f0e418 | 434 | |
97e7d748 MS |
435 | if (u->job) { |
436 | Job *j = u->job; | |
437 | job_uninstall(j); | |
438 | job_free(j); | |
439 | } | |
964e0949 | 440 | |
e0209d83 MS |
441 | if (u->nop_job) { |
442 | Job *j = u->nop_job; | |
443 | job_uninstall(j); | |
444 | job_free(j); | |
445 | } | |
446 | ||
964e0949 | 447 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) |
ac155bb8 | 448 | bidi_set_free(u, u->dependencies[d]); |
964e0949 | 449 | |
ac155bb8 | 450 | if (u->type != _UNIT_TYPE_INVALID) |
71fda00f | 451 | LIST_REMOVE(units_by_type, u->manager->units_by_type[u->type], u); |
ef734fd6 | 452 | |
ac155bb8 | 453 | if (u->in_load_queue) |
71fda00f | 454 | LIST_REMOVE(load_queue, u->manager->load_queue, u); |
87f0e418 | 455 | |
ac155bb8 | 456 | if (u->in_dbus_queue) |
71fda00f | 457 | LIST_REMOVE(dbus_queue, u->manager->dbus_unit_queue, u); |
c1e1601e | 458 | |
ac155bb8 | 459 | if (u->in_cleanup_queue) |
71fda00f | 460 | LIST_REMOVE(cleanup_queue, u->manager->cleanup_queue, u); |
23a177ef | 461 | |
ac155bb8 | 462 | if (u->in_gc_queue) { |
71fda00f | 463 | LIST_REMOVE(gc_queue, u->manager->gc_queue, u); |
ac155bb8 | 464 | u->manager->n_in_gc_queue--; |
701cc384 LP |
465 | } |
466 | ||
4ad49000 | 467 | if (u->in_cgroup_queue) |
71fda00f | 468 | LIST_REMOVE(cgroup_queue, u->manager->cgroup_queue, u); |
87f0e418 | 469 | |
72673e86 LP |
470 | if (u->cgroup_path) { |
471 | hashmap_remove(u->manager->cgroup_unit, u->cgroup_path); | |
472 | free(u->cgroup_path); | |
473 | } | |
474 | ||
ac155bb8 | 475 | free(u->description); |
49dbfa7b | 476 | strv_free(u->documentation); |
ac155bb8 | 477 | free(u->fragment_path); |
1b64d026 | 478 | free(u->source_path); |
ae7a7182 | 479 | strv_free(u->dropin_paths); |
ac155bb8 | 480 | free(u->instance); |
87f0e418 | 481 | |
ac155bb8 | 482 | set_free_free(u->names); |
87f0e418 | 483 | |
ac155bb8 | 484 | condition_free_list(u->conditions); |
52661efd | 485 | |
702a2d8f LP |
486 | unit_ref_unset(&u->slice); |
487 | ||
ac155bb8 MS |
488 | while (u->refs) |
489 | unit_ref_unset(u->refs); | |
57020a3a | 490 | |
87f0e418 LP |
491 | free(u); |
492 | } | |
493 | ||
494 | UnitActiveState unit_active_state(Unit *u) { | |
495 | assert(u); | |
496 | ||
ac155bb8 | 497 | if (u->load_state == UNIT_MERGED) |
6124958c LP |
498 | return unit_active_state(unit_follow_merge(u)); |
499 | ||
500 | /* After a reload it might happen that a unit is not correctly | |
501 | * loaded but still has a process around. That's why we won't | |
fdf20a31 | 502 | * shortcut failed loading to UNIT_INACTIVE_FAILED. */ |
87f0e418 LP |
503 | |
504 | return UNIT_VTABLE(u)->active_state(u); | |
505 | } | |
506 | ||
10a94420 LP |
507 | const char* unit_sub_state_to_string(Unit *u) { |
508 | assert(u); | |
509 | ||
510 | return UNIT_VTABLE(u)->sub_state_to_string(u); | |
511 | } | |
512 | ||
23a177ef LP |
513 | static void complete_move(Set **s, Set **other) { |
514 | assert(s); | |
515 | assert(other); | |
87f0e418 | 516 | |
23a177ef LP |
517 | if (!*other) |
518 | return; | |
87f0e418 LP |
519 | |
520 | if (*s) | |
23a177ef LP |
521 | set_move(*s, *other); |
522 | else { | |
523 | *s = *other; | |
524 | *other = NULL; | |
525 | } | |
526 | } | |
87f0e418 | 527 | |
23a177ef LP |
528 | static void merge_names(Unit *u, Unit *other) { |
529 | char *t; | |
530 | Iterator i; | |
87f0e418 | 531 | |
23a177ef LP |
532 | assert(u); |
533 | assert(other); | |
534 | ||
ac155bb8 | 535 | complete_move(&u->names, &other->names); |
23a177ef | 536 | |
ac155bb8 MS |
537 | set_free_free(other->names); |
538 | other->names = NULL; | |
539 | other->id = NULL; | |
23a177ef | 540 | |
ac155bb8 MS |
541 | SET_FOREACH(t, u->names, i) |
542 | assert_se(hashmap_replace(u->manager->units, t, u) == 0); | |
87f0e418 LP |
543 | } |
544 | ||
23a177ef LP |
545 | static void merge_dependencies(Unit *u, Unit *other, UnitDependency d) { |
546 | Iterator i; | |
547 | Unit *back; | |
87f0e418 | 548 | int r; |
23a177ef LP |
549 | |
550 | assert(u); | |
551 | assert(other); | |
552 | assert(d < _UNIT_DEPENDENCY_MAX); | |
553 | ||
83a95334 | 554 | /* Fix backwards pointers */ |
ac155bb8 | 555 | SET_FOREACH(back, other->dependencies[d], i) { |
23a177ef LP |
556 | UnitDependency k; |
557 | ||
e48614c4 ZJS |
558 | for (k = 0; k < _UNIT_DEPENDENCY_MAX; k++) { |
559 | r = set_remove_and_put(back->dependencies[k], other, u); | |
560 | if (r == -EEXIST) | |
561 | set_remove(back->dependencies[k], other); | |
562 | else | |
563 | assert(r >= 0 || r == -ENOENT); | |
564 | } | |
23a177ef LP |
565 | } |
566 | ||
ac155bb8 | 567 | complete_move(&u->dependencies[d], &other->dependencies[d]); |
23a177ef | 568 | |
ac155bb8 MS |
569 | set_free(other->dependencies[d]); |
570 | other->dependencies[d] = NULL; | |
23a177ef LP |
571 | } |
572 | ||
573 | int unit_merge(Unit *u, Unit *other) { | |
87f0e418 LP |
574 | UnitDependency d; |
575 | ||
576 | assert(u); | |
577 | assert(other); | |
ac155bb8 MS |
578 | assert(u->manager == other->manager); |
579 | assert(u->type != _UNIT_TYPE_INVALID); | |
87f0e418 | 580 | |
cc916967 LP |
581 | other = unit_follow_merge(other); |
582 | ||
23a177ef LP |
583 | if (other == u) |
584 | return 0; | |
585 | ||
ac155bb8 | 586 | if (u->type != other->type) |
9e2f7c11 LP |
587 | return -EINVAL; |
588 | ||
ac155bb8 | 589 | if (!u->instance != !other->instance) |
87f0e418 LP |
590 | return -EINVAL; |
591 | ||
ac155bb8 | 592 | if (other->load_state != UNIT_STUB && |
c2756a68 | 593 | other->load_state != UNIT_NOT_FOUND) |
23a177ef | 594 | return -EEXIST; |
87f0e418 | 595 | |
ac155bb8 | 596 | if (other->job) |
819e213f LP |
597 | return -EEXIST; |
598 | ||
e0209d83 MS |
599 | if (other->nop_job) |
600 | return -EEXIST; | |
601 | ||
fdf20a31 | 602 | if (!UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other))) |
819e213f LP |
603 | return -EEXIST; |
604 | ||
87f0e418 | 605 | /* Merge names */ |
23a177ef | 606 | merge_names(u, other); |
87f0e418 | 607 | |
57020a3a | 608 | /* Redirect all references */ |
ac155bb8 MS |
609 | while (other->refs) |
610 | unit_ref_set(other->refs, u); | |
57020a3a | 611 | |
87f0e418 LP |
612 | /* Merge dependencies */ |
613 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) | |
23a177ef | 614 | merge_dependencies(u, other, d); |
87f0e418 | 615 | |
ac155bb8 MS |
616 | other->load_state = UNIT_MERGED; |
617 | other->merged_into = u; | |
23a177ef | 618 | |
3616a49c LP |
619 | /* If there is still some data attached to the other node, we |
620 | * don't need it anymore, and can free it. */ | |
ac155bb8 | 621 | if (other->load_state != UNIT_STUB) |
3616a49c LP |
622 | if (UNIT_VTABLE(other)->done) |
623 | UNIT_VTABLE(other)->done(other); | |
624 | ||
625 | unit_add_to_dbus_queue(u); | |
23a177ef LP |
626 | unit_add_to_cleanup_queue(other); |
627 | ||
628 | return 0; | |
629 | } | |
630 | ||
631 | int unit_merge_by_name(Unit *u, const char *name) { | |
632 | Unit *other; | |
9e2f7c11 | 633 | int r; |
68eda4bd | 634 | _cleanup_free_ char *s = NULL; |
23a177ef LP |
635 | |
636 | assert(u); | |
637 | assert(name); | |
638 | ||
9e2f7c11 | 639 | if (unit_name_is_template(name)) { |
ac155bb8 | 640 | if (!u->instance) |
9e2f7c11 LP |
641 | return -EINVAL; |
642 | ||
e48614c4 ZJS |
643 | s = unit_name_replace_instance(name, u->instance); |
644 | if (!s) | |
9e2f7c11 LP |
645 | return -ENOMEM; |
646 | ||
647 | name = s; | |
648 | } | |
649 | ||
c2756a68 LP |
650 | other = manager_get_unit(u->manager, name); |
651 | if (!other) | |
9e2f7c11 LP |
652 | r = unit_add_name(u, name); |
653 | else | |
654 | r = unit_merge(u, other); | |
23a177ef | 655 | |
9e2f7c11 | 656 | return r; |
23a177ef LP |
657 | } |
658 | ||
659 | Unit* unit_follow_merge(Unit *u) { | |
660 | assert(u); | |
661 | ||
ac155bb8 MS |
662 | while (u->load_state == UNIT_MERGED) |
663 | assert_se(u = u->merged_into); | |
23a177ef LP |
664 | |
665 | return u; | |
666 | } | |
667 | ||
668 | int unit_add_exec_dependencies(Unit *u, ExecContext *c) { | |
669 | int r; | |
670 | ||
671 | assert(u); | |
672 | assert(c); | |
673 | ||
36be24c8 ZJS |
674 | if (c->working_directory) { |
675 | r = unit_require_mounts_for(u, c->working_directory); | |
676 | if (r < 0) | |
677 | return r; | |
678 | } | |
679 | ||
680 | if (c->root_directory) { | |
681 | r = unit_require_mounts_for(u, c->root_directory); | |
682 | if (r < 0) | |
683 | return r; | |
684 | } | |
685 | ||
ecc6e2b8 LP |
686 | if (c->std_output != EXEC_OUTPUT_KMSG && |
687 | c->std_output != EXEC_OUTPUT_SYSLOG && | |
706343f4 | 688 | c->std_output != EXEC_OUTPUT_JOURNAL && |
28dbc1e8 LP |
689 | c->std_output != EXEC_OUTPUT_KMSG_AND_CONSOLE && |
690 | c->std_output != EXEC_OUTPUT_SYSLOG_AND_CONSOLE && | |
706343f4 | 691 | c->std_output != EXEC_OUTPUT_JOURNAL_AND_CONSOLE && |
ecc6e2b8 | 692 | c->std_error != EXEC_OUTPUT_KMSG && |
085c98af | 693 | c->std_error != EXEC_OUTPUT_SYSLOG && |
706343f4 | 694 | c->std_error != EXEC_OUTPUT_JOURNAL && |
085c98af | 695 | c->std_error != EXEC_OUTPUT_KMSG_AND_CONSOLE && |
706343f4 | 696 | c->std_error != EXEC_OUTPUT_JOURNAL_AND_CONSOLE && |
28dbc1e8 | 697 | c->std_error != EXEC_OUTPUT_SYSLOG_AND_CONSOLE) |
23a177ef LP |
698 | return 0; |
699 | ||
700 | /* If syslog or kernel logging is requested, make sure our own | |
701 | * logging daemon is run first. */ | |
702 | ||
9d246da3 MS |
703 | if (u->manager->running_as == SYSTEMD_SYSTEM) { |
704 | r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_JOURNALD_SOCKET, NULL, true); | |
705 | if (r < 0) | |
23a177ef | 706 | return r; |
9d246da3 | 707 | } |
23a177ef | 708 | |
87f0e418 LP |
709 | return 0; |
710 | } | |
711 | ||
87f0e418 LP |
712 | const char *unit_description(Unit *u) { |
713 | assert(u); | |
714 | ||
ac155bb8 MS |
715 | if (u->description) |
716 | return u->description; | |
87f0e418 | 717 | |
ac155bb8 | 718 | return strna(u->id); |
87f0e418 LP |
719 | } |
720 | ||
721 | void unit_dump(Unit *u, FILE *f, const char *prefix) { | |
49dbfa7b | 722 | char *t, **j; |
87f0e418 LP |
723 | UnitDependency d; |
724 | Iterator i; | |
68eda4bd | 725 | _cleanup_free_ char *p2 = NULL; |
47be870b | 726 | const char *prefix2; |
173e3821 LP |
727 | char |
728 | timestamp1[FORMAT_TIMESTAMP_MAX], | |
729 | timestamp2[FORMAT_TIMESTAMP_MAX], | |
730 | timestamp3[FORMAT_TIMESTAMP_MAX], | |
faf919f1 LP |
731 | timestamp4[FORMAT_TIMESTAMP_MAX], |
732 | timespan[FORMAT_TIMESPAN_MAX]; | |
a7f241db | 733 | Unit *following; |
eeaedb7c LP |
734 | _cleanup_set_free_ Set *following_set = NULL; |
735 | int r; | |
87f0e418 LP |
736 | |
737 | assert(u); | |
ac155bb8 | 738 | assert(u->type >= 0); |
87f0e418 LP |
739 | |
740 | if (!prefix) | |
741 | prefix = ""; | |
47be870b LP |
742 | p2 = strappend(prefix, "\t"); |
743 | prefix2 = p2 ? p2 : prefix; | |
87f0e418 LP |
744 | |
745 | fprintf(f, | |
40d50879 | 746 | "%s-> Unit %s:\n" |
87f0e418 | 747 | "%s\tDescription: %s\n" |
9e2f7c11 | 748 | "%s\tInstance: %s\n" |
87f0e418 | 749 | "%s\tUnit Load State: %s\n" |
2fad8195 | 750 | "%s\tUnit Active State: %s\n" |
173e3821 | 751 | "%s\tInactive Exit Timestamp: %s\n" |
2fad8195 | 752 | "%s\tActive Enter Timestamp: %s\n" |
701cc384 | 753 | "%s\tActive Exit Timestamp: %s\n" |
173e3821 | 754 | "%s\tInactive Enter Timestamp: %s\n" |
45fb0699 | 755 | "%s\tGC Check Good: %s\n" |
9444b1f2 | 756 | "%s\tNeed Daemon Reload: %s\n" |
c2756a68 | 757 | "%s\tTransient: %s\n" |
4ad49000 LP |
758 | "%s\tSlice: %s\n" |
759 | "%s\tCGroup: %s\n" | |
760 | "%s\tCGroup realized: %s\n" | |
6414b7c9 DS |
761 | "%s\tCGroup mask: 0x%x\n" |
762 | "%s\tCGroup members mask: 0x%x\n", | |
ac155bb8 | 763 | prefix, u->id, |
87f0e418 | 764 | prefix, unit_description(u), |
ac155bb8 MS |
765 | prefix, strna(u->instance), |
766 | prefix, unit_load_state_to_string(u->load_state), | |
2fad8195 | 767 | prefix, unit_active_state_to_string(unit_active_state(u)), |
ac155bb8 MS |
768 | prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->inactive_exit_timestamp.realtime)), |
769 | prefix, strna(format_timestamp(timestamp2, sizeof(timestamp2), u->active_enter_timestamp.realtime)), | |
770 | prefix, strna(format_timestamp(timestamp3, sizeof(timestamp3), u->active_exit_timestamp.realtime)), | |
771 | prefix, strna(format_timestamp(timestamp4, sizeof(timestamp4), u->inactive_enter_timestamp.realtime)), | |
45fb0699 | 772 | prefix, yes_no(unit_check_gc(u)), |
9444b1f2 | 773 | prefix, yes_no(unit_need_daemon_reload(u)), |
c2756a68 | 774 | prefix, yes_no(u->transient), |
4ad49000 LP |
775 | prefix, strna(unit_slice_name(u)), |
776 | prefix, strna(u->cgroup_path), | |
777 | prefix, yes_no(u->cgroup_realized), | |
6414b7c9 DS |
778 | prefix, u->cgroup_mask, |
779 | prefix, u->cgroup_members_mask); | |
0301abf4 | 780 | |
ac155bb8 | 781 | SET_FOREACH(t, u->names, i) |
87f0e418 LP |
782 | fprintf(f, "%s\tName: %s\n", prefix, t); |
783 | ||
49dbfa7b LP |
784 | STRV_FOREACH(j, u->documentation) |
785 | fprintf(f, "%s\tDocumentation: %s\n", prefix, *j); | |
786 | ||
eeaedb7c LP |
787 | following = unit_following(u); |
788 | if (following) | |
ac155bb8 | 789 | fprintf(f, "%s\tFollowing: %s\n", prefix, following->id); |
8fe914ec | 790 | |
eeaedb7c LP |
791 | r = unit_following_set(u, &following_set); |
792 | if (r >= 0) { | |
793 | Unit *other; | |
794 | ||
795 | SET_FOREACH(other, following_set, i) | |
796 | fprintf(f, "%s\tFollowing Set Member: %s\n", prefix, other->id); | |
797 | } | |
798 | ||
ac155bb8 MS |
799 | if (u->fragment_path) |
800 | fprintf(f, "%s\tFragment Path: %s\n", prefix, u->fragment_path); | |
23a177ef | 801 | |
1b64d026 LP |
802 | if (u->source_path) |
803 | fprintf(f, "%s\tSource Path: %s\n", prefix, u->source_path); | |
804 | ||
ae7a7182 | 805 | STRV_FOREACH(j, u->dropin_paths) |
2875e22b | 806 | fprintf(f, "%s\tDropIn Path: %s\n", prefix, *j); |
ae7a7182 | 807 | |
ac155bb8 | 808 | if (u->job_timeout > 0) |
2fa4092c | 809 | fprintf(f, "%s\tJob Timeout: %s\n", prefix, format_timespan(timespan, sizeof(timespan), u->job_timeout, 0)); |
faf919f1 | 810 | |
ac155bb8 | 811 | condition_dump_list(u->conditions, f, prefix); |
52661efd | 812 | |
ac155bb8 | 813 | if (dual_timestamp_is_set(&u->condition_timestamp)) |
2791a8f8 LP |
814 | fprintf(f, |
815 | "%s\tCondition Timestamp: %s\n" | |
816 | "%s\tCondition Result: %s\n", | |
ac155bb8 MS |
817 | prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->condition_timestamp.realtime)), |
818 | prefix, yes_no(u->condition_result)); | |
2791a8f8 | 819 | |
87f0e418 LP |
820 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) { |
821 | Unit *other; | |
822 | ||
ac155bb8 MS |
823 | SET_FOREACH(other, u->dependencies[d], i) |
824 | fprintf(f, "%s\t%s: %s\n", prefix, unit_dependency_to_string(d), other->id); | |
87f0e418 LP |
825 | } |
826 | ||
7c8fa05c | 827 | if (!strv_isempty(u->requires_mounts_for)) { |
7c8fa05c LP |
828 | fprintf(f, |
829 | "%s\tRequiresMountsFor:", prefix); | |
830 | ||
831 | STRV_FOREACH(j, u->requires_mounts_for) | |
832 | fprintf(f, " %s", *j); | |
833 | ||
834 | fputs("\n", f); | |
835 | } | |
836 | ||
ac155bb8 | 837 | if (u->load_state == UNIT_LOADED) { |
ab1f0633 | 838 | |
b0650475 | 839 | fprintf(f, |
a40eb732 | 840 | "%s\tStopWhenUnneeded: %s\n" |
b5e9dba8 LP |
841 | "%s\tRefuseManualStart: %s\n" |
842 | "%s\tRefuseManualStop: %s\n" | |
222ae6a8 | 843 | "%s\tDefaultDependencies: %s\n" |
d420282b | 844 | "%s\tOnFailureJobMode: %s\n" |
7a6000a6 LP |
845 | "%s\tIgnoreOnIsolate: %s\n" |
846 | "%s\tIgnoreOnSnapshot: %s\n", | |
ac155bb8 MS |
847 | prefix, yes_no(u->stop_when_unneeded), |
848 | prefix, yes_no(u->refuse_manual_start), | |
849 | prefix, yes_no(u->refuse_manual_stop), | |
850 | prefix, yes_no(u->default_dependencies), | |
d420282b | 851 | prefix, job_mode_to_string(u->on_failure_job_mode), |
ac155bb8 MS |
852 | prefix, yes_no(u->ignore_on_isolate), |
853 | prefix, yes_no(u->ignore_on_snapshot)); | |
854 | ||
23a177ef LP |
855 | if (UNIT_VTABLE(u)->dump) |
856 | UNIT_VTABLE(u)->dump(u, f, prefix2); | |
b0650475 | 857 | |
ac155bb8 | 858 | } else if (u->load_state == UNIT_MERGED) |
b0650475 LP |
859 | fprintf(f, |
860 | "%s\tMerged into: %s\n", | |
ac155bb8 MS |
861 | prefix, u->merged_into->id); |
862 | else if (u->load_state == UNIT_ERROR) | |
863 | fprintf(f, "%s\tLoad Error Code: %s\n", prefix, strerror(-u->load_error)); | |
8821a00f | 864 | |
87f0e418 | 865 | |
ac155bb8 MS |
866 | if (u->job) |
867 | job_dump(u->job, f, prefix2); | |
87f0e418 | 868 | |
e0209d83 MS |
869 | if (u->nop_job) |
870 | job_dump(u->nop_job, f, prefix2); | |
871 | ||
87f0e418 LP |
872 | } |
873 | ||
874 | /* Common implementation for multiple backends */ | |
e537352b | 875 | int unit_load_fragment_and_dropin(Unit *u) { |
23a177ef LP |
876 | int r; |
877 | ||
878 | assert(u); | |
23a177ef | 879 | |
e48614c4 | 880 | /* Load a .{service,socket,...} file */ |
4ad49000 LP |
881 | r = unit_load_fragment(u); |
882 | if (r < 0) | |
23a177ef LP |
883 | return r; |
884 | ||
ac155bb8 | 885 | if (u->load_state == UNIT_STUB) |
23a177ef LP |
886 | return -ENOENT; |
887 | ||
888 | /* Load drop-in directory data */ | |
4ad49000 LP |
889 | r = unit_load_dropin(unit_follow_merge(u)); |
890 | if (r < 0) | |
23a177ef LP |
891 | return r; |
892 | ||
893 | return 0; | |
894 | } | |
895 | ||
896 | /* Common implementation for multiple backends */ | |
e537352b | 897 | int unit_load_fragment_and_dropin_optional(Unit *u) { |
23a177ef | 898 | int r; |
87f0e418 LP |
899 | |
900 | assert(u); | |
901 | ||
23a177ef LP |
902 | /* Same as unit_load_fragment_and_dropin(), but whether |
903 | * something can be loaded or not doesn't matter. */ | |
904 | ||
905 | /* Load a .service file */ | |
4ad49000 LP |
906 | r = unit_load_fragment(u); |
907 | if (r < 0) | |
87f0e418 LP |
908 | return r; |
909 | ||
ac155bb8 MS |
910 | if (u->load_state == UNIT_STUB) |
911 | u->load_state = UNIT_LOADED; | |
d46de8a1 | 912 | |
87f0e418 | 913 | /* Load drop-in directory data */ |
4ad49000 LP |
914 | r = unit_load_dropin(unit_follow_merge(u)); |
915 | if (r < 0) | |
87f0e418 LP |
916 | return r; |
917 | ||
23a177ef | 918 | return 0; |
87f0e418 LP |
919 | } |
920 | ||
bba34eed | 921 | int unit_add_default_target_dependency(Unit *u, Unit *target) { |
98bc2000 LP |
922 | assert(u); |
923 | assert(target); | |
924 | ||
ac155bb8 | 925 | if (target->type != UNIT_TARGET) |
98bc2000 LP |
926 | return 0; |
927 | ||
35b8ca3a | 928 | /* Only add the dependency if both units are loaded, so that |
bba34eed | 929 | * that loop check below is reliable */ |
ac155bb8 MS |
930 | if (u->load_state != UNIT_LOADED || |
931 | target->load_state != UNIT_LOADED) | |
bba34eed LP |
932 | return 0; |
933 | ||
21256a2b LP |
934 | /* If either side wants no automatic dependencies, then let's |
935 | * skip this */ | |
ac155bb8 MS |
936 | if (!u->default_dependencies || |
937 | !target->default_dependencies) | |
21256a2b LP |
938 | return 0; |
939 | ||
98bc2000 | 940 | /* Don't create loops */ |
ac155bb8 | 941 | if (set_get(target->dependencies[UNIT_BEFORE], u)) |
98bc2000 LP |
942 | return 0; |
943 | ||
944 | return unit_add_dependency(target, UNIT_AFTER, u, true); | |
945 | } | |
946 | ||
947 | static int unit_add_default_dependencies(Unit *u) { | |
a016b922 | 948 | |
21256a2b LP |
949 | static const UnitDependency deps[] = { |
950 | UNIT_REQUIRED_BY, | |
951 | UNIT_REQUIRED_BY_OVERRIDABLE, | |
952 | UNIT_WANTED_BY, | |
953 | UNIT_BOUND_BY | |
954 | }; | |
955 | ||
bba34eed | 956 | Unit *target; |
98bc2000 LP |
957 | Iterator i; |
958 | int r; | |
21256a2b | 959 | unsigned k; |
98bc2000 LP |
960 | |
961 | assert(u); | |
962 | ||
21256a2b | 963 | for (k = 0; k < ELEMENTSOF(deps); k++) |
a016b922 LP |
964 | SET_FOREACH(target, u->dependencies[deps[k]], i) { |
965 | r = unit_add_default_target_dependency(u, target); | |
966 | if (r < 0) | |
21256a2b | 967 | return r; |
a016b922 LP |
968 | } |
969 | ||
4ad49000 LP |
970 | if (u->default_dependencies && unit_get_cgroup_context(u)) { |
971 | if (UNIT_ISSET(u->slice)) | |
972 | r = unit_add_two_dependencies(u, UNIT_AFTER, UNIT_WANTS, UNIT_DEREF(u->slice), true); | |
973 | else | |
974 | r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_WANTS, SPECIAL_ROOT_SLICE, NULL, true); | |
975 | ||
a016b922 LP |
976 | if (r < 0) |
977 | return r; | |
978 | } | |
b81884e7 | 979 | |
98bc2000 LP |
980 | return 0; |
981 | } | |
982 | ||
9588bc32 LP |
983 | static int unit_add_mount_links(Unit *u) { |
984 | char **i; | |
985 | int r; | |
986 | ||
987 | assert(u); | |
988 | ||
989 | STRV_FOREACH(i, u->requires_mounts_for) { | |
990 | char prefix[strlen(*i) + 1]; | |
991 | ||
992 | PATH_FOREACH_PREFIX_MORE(prefix, *i) { | |
993 | Unit *m; | |
994 | ||
995 | r = manager_get_unit_by_path(u->manager, prefix, ".mount", &m); | |
996 | if (r < 0) | |
997 | return r; | |
998 | if (r == 0) | |
999 | continue; | |
1000 | if (m == u) | |
1001 | continue; | |
1002 | ||
1003 | if (m->load_state != UNIT_LOADED) | |
1004 | continue; | |
1005 | ||
1006 | r = unit_add_dependency(u, UNIT_AFTER, m, true); | |
1007 | if (r < 0) | |
1008 | return r; | |
1009 | ||
1010 | if (m->fragment_path) { | |
1011 | r = unit_add_dependency(u, UNIT_REQUIRES, m, true); | |
1012 | if (r < 0) | |
1013 | return r; | |
1014 | } | |
1015 | } | |
1016 | } | |
1017 | ||
1018 | return 0; | |
1019 | } | |
1020 | ||
87f0e418 LP |
1021 | int unit_load(Unit *u) { |
1022 | int r; | |
1023 | ||
1024 | assert(u); | |
1025 | ||
ac155bb8 | 1026 | if (u->in_load_queue) { |
71fda00f | 1027 | LIST_REMOVE(load_queue, u->manager->load_queue, u); |
ac155bb8 | 1028 | u->in_load_queue = false; |
87f0e418 LP |
1029 | } |
1030 | ||
ac155bb8 | 1031 | if (u->type == _UNIT_TYPE_INVALID) |
e537352b LP |
1032 | return -EINVAL; |
1033 | ||
ac155bb8 | 1034 | if (u->load_state != UNIT_STUB) |
87f0e418 LP |
1035 | return 0; |
1036 | ||
c2756a68 LP |
1037 | if (UNIT_VTABLE(u)->load) { |
1038 | r = UNIT_VTABLE(u)->load(u); | |
1039 | if (r < 0) | |
87f0e418 | 1040 | goto fail; |
c2756a68 | 1041 | } |
23a177ef | 1042 | |
ac155bb8 | 1043 | if (u->load_state == UNIT_STUB) { |
23a177ef LP |
1044 | r = -ENOENT; |
1045 | goto fail; | |
1046 | } | |
1047 | ||
7c8fa05c | 1048 | if (u->load_state == UNIT_LOADED) { |
c2756a68 LP |
1049 | |
1050 | if (u->default_dependencies) { | |
1051 | r = unit_add_default_dependencies(u); | |
1052 | if (r < 0) | |
1053 | goto fail; | |
1054 | } | |
1055 | ||
6414b7c9 DS |
1056 | unit_update_member_masks(u); |
1057 | ||
7c8fa05c LP |
1058 | r = unit_add_mount_links(u); |
1059 | if (r < 0) | |
c2756a68 | 1060 | goto fail; |
7c8fa05c | 1061 | |
d420282b | 1062 | if (u->on_failure_job_mode == JOB_ISOLATE && |
c2756a68 | 1063 | set_size(u->dependencies[UNIT_ON_FAILURE]) > 1) { |
f68319bb | 1064 | |
c2756a68 | 1065 | log_error_unit(u->id, |
d420282b | 1066 | "More than one OnFailure= dependencies specified for %s but OnFailureJobMode=isolate set. Refusing.", u->id); |
f68319bb | 1067 | |
c2756a68 LP |
1068 | r = -EINVAL; |
1069 | goto fail; | |
1070 | } | |
f68319bb LP |
1071 | } |
1072 | ||
ac155bb8 | 1073 | assert((u->load_state != UNIT_MERGED) == !u->merged_into); |
23a177ef LP |
1074 | |
1075 | unit_add_to_dbus_queue(unit_follow_merge(u)); | |
701cc384 | 1076 | unit_add_to_gc_queue(u); |
87f0e418 | 1077 | |
87f0e418 LP |
1078 | return 0; |
1079 | ||
1080 | fail: | |
c2756a68 | 1081 | u->load_state = u->load_state == UNIT_STUB ? UNIT_NOT_FOUND : UNIT_ERROR; |
ac155bb8 | 1082 | u->load_error = r; |
c1e1601e | 1083 | unit_add_to_dbus_queue(u); |
9a46fc3b | 1084 | unit_add_to_gc_queue(u); |
23a177ef | 1085 | |
c1b6628d ZJS |
1086 | log_debug_unit(u->id, "Failed to load configuration for %s: %s", |
1087 | u->id, strerror(-r)); | |
23a177ef | 1088 | |
87f0e418 LP |
1089 | return r; |
1090 | } | |
1091 | ||
9588bc32 | 1092 | static bool unit_condition_test(Unit *u) { |
90bbc946 LP |
1093 | assert(u); |
1094 | ||
ac155bb8 | 1095 | dual_timestamp_get(&u->condition_timestamp); |
4b744dfa | 1096 | u->condition_result = condition_test_list(u->id, u->conditions); |
90bbc946 | 1097 | |
ac155bb8 | 1098 | return u->condition_result; |
90bbc946 LP |
1099 | } |
1100 | ||
44a6b1b6 | 1101 | _pure_ static const char* unit_get_status_message_format(Unit *u, JobType t) { |
c6918296 | 1102 | const UnitStatusMessageFormats *format_table; |
877d54e9 LP |
1103 | |
1104 | assert(u); | |
1105 | assert(t >= 0); | |
1106 | assert(t < _JOB_TYPE_MAX); | |
1107 | ||
1108 | if (t != JOB_START && t != JOB_STOP) | |
1109 | return NULL; | |
c6918296 MS |
1110 | |
1111 | format_table = &UNIT_VTABLE(u)->status_message_formats; | |
1112 | if (!format_table) | |
877d54e9 LP |
1113 | return NULL; |
1114 | ||
1115 | return format_table->starting_stopping[t == JOB_STOP]; | |
1116 | } | |
1117 | ||
44a6b1b6 | 1118 | _pure_ static const char *unit_get_status_message_format_try_harder(Unit *u, JobType t) { |
877d54e9 LP |
1119 | const char *format; |
1120 | ||
1121 | assert(u); | |
1122 | assert(t >= 0); | |
1123 | assert(t < _JOB_TYPE_MAX); | |
1124 | ||
1125 | format = unit_get_status_message_format(u, t); | |
1126 | if (format) | |
1127 | return format; | |
1128 | ||
1129 | /* Return generic strings */ | |
1130 | if (t == JOB_START) | |
1131 | return "Starting %s."; | |
1132 | else if (t == JOB_STOP) | |
1133 | return "Stopping %s."; | |
1134 | else if (t == JOB_RELOAD) | |
1135 | return "Reloading %s."; | |
1136 | ||
1137 | return NULL; | |
1138 | } | |
1139 | ||
9091e686 TA |
1140 | #pragma GCC diagnostic push |
1141 | #pragma GCC diagnostic ignored "-Wformat-nonliteral" | |
877d54e9 LP |
1142 | static void unit_status_print_starting_stopping(Unit *u, JobType t) { |
1143 | const char *format; | |
1144 | ||
1145 | assert(u); | |
1146 | ||
1147 | /* We only print status messages for selected units on | |
1148 | * selected operations. */ | |
c6918296 | 1149 | |
877d54e9 | 1150 | format = unit_get_status_message_format(u, t); |
c6918296 MS |
1151 | if (!format) |
1152 | return; | |
1153 | ||
49b1d377 | 1154 | unit_status_printf(u, "", format); |
c6918296 | 1155 | } |
9091e686 | 1156 | #pragma GCC diagnostic pop |
c6918296 | 1157 | |
877d54e9 LP |
1158 | #pragma GCC diagnostic push |
1159 | #pragma GCC diagnostic ignored "-Wformat-nonliteral" | |
1160 | static void unit_status_log_starting_stopping_reloading(Unit *u, JobType t) { | |
1161 | const char *format; | |
1162 | char buf[LINE_MAX]; | |
1163 | sd_id128_t mid; | |
1164 | ||
1165 | assert(u); | |
1166 | ||
1167 | if (t != JOB_START && t != JOB_STOP && t != JOB_RELOAD) | |
1168 | return; | |
1169 | ||
81270860 LP |
1170 | if (log_on_console()) |
1171 | return; | |
1172 | ||
877d54e9 LP |
1173 | /* We log status messages for all units and all operations. */ |
1174 | ||
1175 | format = unit_get_status_message_format_try_harder(u, t); | |
1176 | if (!format) | |
1177 | return; | |
1178 | ||
1179 | snprintf(buf, sizeof(buf), format, unit_description(u)); | |
1180 | char_array_0(buf); | |
1181 | ||
1182 | mid = t == JOB_START ? SD_MESSAGE_UNIT_STARTING : | |
1183 | t == JOB_STOP ? SD_MESSAGE_UNIT_STOPPING : | |
1184 | SD_MESSAGE_UNIT_RELOADING; | |
1185 | ||
bbc9006e | 1186 | log_struct_unit(LOG_INFO, |
c1b6628d ZJS |
1187 | u->id, |
1188 | MESSAGE_ID(mid), | |
1189 | "MESSAGE=%s", buf, | |
1190 | NULL); | |
877d54e9 LP |
1191 | } |
1192 | #pragma GCC diagnostic pop | |
1193 | ||
87f0e418 | 1194 | /* Errors: |
d5159713 LP |
1195 | * -EBADR: This unit type does not support starting. |
1196 | * -EALREADY: Unit is already started. | |
1197 | * -EAGAIN: An operation is already in progress. Retry later. | |
1198 | * -ECANCELED: Too many requests for now. | |
87f0e418 LP |
1199 | */ |
1200 | int unit_start(Unit *u) { | |
1201 | UnitActiveState state; | |
92ab323c | 1202 | Unit *following; |
87f0e418 LP |
1203 | |
1204 | assert(u); | |
1205 | ||
ac155bb8 | 1206 | if (u->load_state != UNIT_LOADED) |
6124958c LP |
1207 | return -EINVAL; |
1208 | ||
a82e5507 LP |
1209 | /* If this is already started, then this will succeed. Note |
1210 | * that this will even succeed if this unit is not startable | |
1211 | * by the user. This is relied on to detect when we need to | |
1212 | * wait for units and when waiting is finished. */ | |
87f0e418 LP |
1213 | state = unit_active_state(u); |
1214 | if (UNIT_IS_ACTIVE_OR_RELOADING(state)) | |
1215 | return -EALREADY; | |
1216 | ||
a82e5507 LP |
1217 | /* If the conditions failed, don't do anything at all. If we |
1218 | * already are activating this call might still be useful to | |
1219 | * speed up activation in case there is some hold-off time, | |
1220 | * but we don't want to recheck the condition in that case. */ | |
1221 | if (state != UNIT_ACTIVATING && | |
1222 | !unit_condition_test(u)) { | |
c1b6628d | 1223 | log_debug_unit(u->id, "Starting of %s requested but condition failed. Ignoring.", u->id); |
52661efd LP |
1224 | return -EALREADY; |
1225 | } | |
1226 | ||
92ab323c | 1227 | /* Forward to the main object, if we aren't it. */ |
52990c2e ZJS |
1228 | following = unit_following(u); |
1229 | if (following) { | |
c1b6628d ZJS |
1230 | log_debug_unit(u->id, "Redirecting start request from %s to %s.", |
1231 | u->id, following->id); | |
92ab323c LP |
1232 | return unit_start(following); |
1233 | } | |
1234 | ||
877d54e9 LP |
1235 | unit_status_log_starting_stopping_reloading(u, JOB_START); |
1236 | unit_status_print_starting_stopping(u, JOB_START); | |
c6918296 | 1237 | |
92ab323c LP |
1238 | /* If it is stopped, but we cannot start it, then fail */ |
1239 | if (!UNIT_VTABLE(u)->start) | |
1240 | return -EBADR; | |
1241 | ||
87f0e418 LP |
1242 | /* We don't suppress calls to ->start() here when we are |
1243 | * already starting, to allow this request to be used as a | |
1244 | * "hurry up" call, for example when the unit is in some "auto | |
1245 | * restart" state where it waits for a holdoff timer to elapse | |
1246 | * before it will start again. */ | |
1247 | ||
c1e1601e | 1248 | unit_add_to_dbus_queue(u); |
9e58ff9c | 1249 | |
87f0e418 LP |
1250 | return UNIT_VTABLE(u)->start(u); |
1251 | } | |
1252 | ||
1253 | bool unit_can_start(Unit *u) { | |
1254 | assert(u); | |
1255 | ||
1256 | return !!UNIT_VTABLE(u)->start; | |
1257 | } | |
1258 | ||
2528a7a6 LP |
1259 | bool unit_can_isolate(Unit *u) { |
1260 | assert(u); | |
1261 | ||
1262 | return unit_can_start(u) && | |
ac155bb8 | 1263 | u->allow_isolate; |
2528a7a6 LP |
1264 | } |
1265 | ||
87f0e418 LP |
1266 | /* Errors: |
1267 | * -EBADR: This unit type does not support stopping. | |
1268 | * -EALREADY: Unit is already stopped. | |
1269 | * -EAGAIN: An operation is already in progress. Retry later. | |
1270 | */ | |
1271 | int unit_stop(Unit *u) { | |
1272 | UnitActiveState state; | |
92ab323c | 1273 | Unit *following; |
87f0e418 LP |
1274 | |
1275 | assert(u); | |
1276 | ||
87f0e418 | 1277 | state = unit_active_state(u); |
fdf20a31 | 1278 | if (UNIT_IS_INACTIVE_OR_FAILED(state)) |
87f0e418 LP |
1279 | return -EALREADY; |
1280 | ||
92ab323c | 1281 | if ((following = unit_following(u))) { |
c1b6628d ZJS |
1282 | log_debug_unit(u->id, "Redirecting stop request from %s to %s.", |
1283 | u->id, following->id); | |
92ab323c LP |
1284 | return unit_stop(following); |
1285 | } | |
1286 | ||
877d54e9 LP |
1287 | unit_status_log_starting_stopping_reloading(u, JOB_STOP); |
1288 | unit_status_print_starting_stopping(u, JOB_STOP); | |
c6918296 | 1289 | |
7898b0cf LP |
1290 | if (!UNIT_VTABLE(u)->stop) |
1291 | return -EBADR; | |
1292 | ||
c1e1601e | 1293 | unit_add_to_dbus_queue(u); |
9e58ff9c | 1294 | |
87f0e418 LP |
1295 | return UNIT_VTABLE(u)->stop(u); |
1296 | } | |
1297 | ||
1298 | /* Errors: | |
1299 | * -EBADR: This unit type does not support reloading. | |
1300 | * -ENOEXEC: Unit is not started. | |
1301 | * -EAGAIN: An operation is already in progress. Retry later. | |
1302 | */ | |
1303 | int unit_reload(Unit *u) { | |
1304 | UnitActiveState state; | |
92ab323c | 1305 | Unit *following; |
87f0e418 LP |
1306 | |
1307 | assert(u); | |
1308 | ||
ac155bb8 | 1309 | if (u->load_state != UNIT_LOADED) |
6124958c LP |
1310 | return -EINVAL; |
1311 | ||
87f0e418 LP |
1312 | if (!unit_can_reload(u)) |
1313 | return -EBADR; | |
1314 | ||
1315 | state = unit_active_state(u); | |
e364ad06 | 1316 | if (state == UNIT_RELOADING) |
87f0e418 LP |
1317 | return -EALREADY; |
1318 | ||
6a371e23 ZJS |
1319 | if (state != UNIT_ACTIVE) { |
1320 | log_warning_unit(u->id, "Unit %s cannot be reloaded because it is inactive.", | |
1321 | u->id); | |
87f0e418 | 1322 | return -ENOEXEC; |
6a371e23 | 1323 | } |
87f0e418 | 1324 | |
e48614c4 ZJS |
1325 | following = unit_following(u); |
1326 | if (following) { | |
c1b6628d ZJS |
1327 | log_debug_unit(u->id, "Redirecting reload request from %s to %s.", |
1328 | u->id, following->id); | |
92ab323c LP |
1329 | return unit_reload(following); |
1330 | } | |
1331 | ||
877d54e9 LP |
1332 | unit_status_log_starting_stopping_reloading(u, JOB_RELOAD); |
1333 | ||
c1e1601e | 1334 | unit_add_to_dbus_queue(u); |
87f0e418 LP |
1335 | return UNIT_VTABLE(u)->reload(u); |
1336 | } | |
1337 | ||
1338 | bool unit_can_reload(Unit *u) { | |
1339 | assert(u); | |
1340 | ||
1341 | if (!UNIT_VTABLE(u)->reload) | |
1342 | return false; | |
1343 | ||
1344 | if (!UNIT_VTABLE(u)->can_reload) | |
1345 | return true; | |
1346 | ||
1347 | return UNIT_VTABLE(u)->can_reload(u); | |
1348 | } | |
1349 | ||
b4a16b7b | 1350 | static void unit_check_unneeded(Unit *u) { |
f3bff0eb LP |
1351 | Iterator i; |
1352 | Unit *other; | |
1353 | ||
1354 | assert(u); | |
1355 | ||
1356 | /* If this service shall be shut down when unneeded then do | |
1357 | * so. */ | |
1358 | ||
ac155bb8 | 1359 | if (!u->stop_when_unneeded) |
f3bff0eb LP |
1360 | return; |
1361 | ||
1362 | if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) | |
1363 | return; | |
1364 | ||
ac155bb8 | 1365 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRED_BY], i) |
31afa0a4 | 1366 | if (unit_active_or_pending(other)) |
f3bff0eb LP |
1367 | return; |
1368 | ||
ac155bb8 | 1369 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRED_BY_OVERRIDABLE], i) |
31afa0a4 | 1370 | if (unit_active_or_pending(other)) |
f3bff0eb LP |
1371 | return; |
1372 | ||
ac155bb8 | 1373 | SET_FOREACH(other, u->dependencies[UNIT_WANTED_BY], i) |
31afa0a4 | 1374 | if (unit_active_or_pending(other)) |
f3bff0eb LP |
1375 | return; |
1376 | ||
ac155bb8 | 1377 | SET_FOREACH(other, u->dependencies[UNIT_BOUND_BY], i) |
31afa0a4 | 1378 | if (unit_active_or_pending(other)) |
b81884e7 LP |
1379 | return; |
1380 | ||
c1b6628d | 1381 | log_info_unit(u->id, "Service %s is not needed anymore. Stopping.", u->id); |
f3bff0eb LP |
1382 | |
1383 | /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */ | |
ac155bb8 | 1384 | manager_add_job(u->manager, JOB_STOP, u, JOB_FAIL, true, NULL, NULL); |
f3bff0eb LP |
1385 | } |
1386 | ||
87f0e418 LP |
1387 | static void retroactively_start_dependencies(Unit *u) { |
1388 | Iterator i; | |
1389 | Unit *other; | |
1390 | ||
1391 | assert(u); | |
1392 | assert(UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))); | |
1393 | ||
ac155bb8 MS |
1394 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRES], i) |
1395 | if (!set_get(u->dependencies[UNIT_AFTER], other) && | |
b81884e7 | 1396 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
ac155bb8 | 1397 | manager_add_job(u->manager, JOB_START, other, JOB_REPLACE, true, NULL, NULL); |
b81884e7 | 1398 | |
7f2cddae | 1399 | SET_FOREACH(other, u->dependencies[UNIT_BINDS_TO], i) |
ac155bb8 | 1400 | if (!set_get(u->dependencies[UNIT_AFTER], other) && |
b81884e7 | 1401 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
ac155bb8 | 1402 | manager_add_job(u->manager, JOB_START, other, JOB_REPLACE, true, NULL, NULL); |
87f0e418 | 1403 | |
ac155bb8 MS |
1404 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRES_OVERRIDABLE], i) |
1405 | if (!set_get(u->dependencies[UNIT_AFTER], other) && | |
b81884e7 | 1406 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
ac155bb8 | 1407 | manager_add_job(u->manager, JOB_START, other, JOB_FAIL, false, NULL, NULL); |
87f0e418 | 1408 | |
ac155bb8 MS |
1409 | SET_FOREACH(other, u->dependencies[UNIT_WANTS], i) |
1410 | if (!set_get(u->dependencies[UNIT_AFTER], other) && | |
b81884e7 | 1411 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
ac155bb8 | 1412 | manager_add_job(u->manager, JOB_START, other, JOB_FAIL, false, NULL, NULL); |
87f0e418 | 1413 | |
ac155bb8 | 1414 | SET_FOREACH(other, u->dependencies[UNIT_CONFLICTS], i) |
b81884e7 | 1415 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
ac155bb8 | 1416 | manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL); |
69dd2852 | 1417 | |
ac155bb8 | 1418 | SET_FOREACH(other, u->dependencies[UNIT_CONFLICTED_BY], i) |
b81884e7 | 1419 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
ac155bb8 | 1420 | manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL); |
87f0e418 LP |
1421 | } |
1422 | ||
1423 | static void retroactively_stop_dependencies(Unit *u) { | |
1424 | Iterator i; | |
1425 | Unit *other; | |
1426 | ||
1427 | assert(u); | |
1428 | assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))); | |
1429 | ||
b81884e7 | 1430 | /* Pull down units which are bound to us recursively if enabled */ |
ac155bb8 | 1431 | SET_FOREACH(other, u->dependencies[UNIT_BOUND_BY], i) |
b81884e7 | 1432 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
ac155bb8 | 1433 | manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL); |
cd0504d0 MS |
1434 | } |
1435 | ||
1436 | static void check_unneeded_dependencies(Unit *u) { | |
1437 | Iterator i; | |
1438 | Unit *other; | |
1439 | ||
1440 | assert(u); | |
1441 | assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))); | |
f3bff0eb LP |
1442 | |
1443 | /* Garbage collect services that might not be needed anymore, if enabled */ | |
ac155bb8 | 1444 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRES], i) |
87f0e418 | 1445 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1446 | unit_check_unneeded(other); |
ac155bb8 | 1447 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRES_OVERRIDABLE], i) |
f3bff0eb | 1448 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1449 | unit_check_unneeded(other); |
ac155bb8 | 1450 | SET_FOREACH(other, u->dependencies[UNIT_WANTS], i) |
f3bff0eb | 1451 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1452 | unit_check_unneeded(other); |
ac155bb8 | 1453 | SET_FOREACH(other, u->dependencies[UNIT_REQUISITE], i) |
f3bff0eb | 1454 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1455 | unit_check_unneeded(other); |
ac155bb8 | 1456 | SET_FOREACH(other, u->dependencies[UNIT_REQUISITE_OVERRIDABLE], i) |
f3bff0eb | 1457 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1458 | unit_check_unneeded(other); |
7f2cddae | 1459 | SET_FOREACH(other, u->dependencies[UNIT_BINDS_TO], i) |
b81884e7 LP |
1460 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
1461 | unit_check_unneeded(other); | |
87f0e418 LP |
1462 | } |
1463 | ||
3ecaa09b | 1464 | void unit_start_on_failure(Unit *u) { |
c0daa706 LP |
1465 | Unit *other; |
1466 | Iterator i; | |
1467 | ||
1468 | assert(u); | |
1469 | ||
ac155bb8 | 1470 | if (set_size(u->dependencies[UNIT_ON_FAILURE]) <= 0) |
222ae6a8 LP |
1471 | return; |
1472 | ||
c1b6628d | 1473 | log_info_unit(u->id, "Triggering OnFailure= dependencies of %s.", u->id); |
222ae6a8 | 1474 | |
ac155bb8 | 1475 | SET_FOREACH(other, u->dependencies[UNIT_ON_FAILURE], i) { |
222ae6a8 LP |
1476 | int r; |
1477 | ||
d420282b | 1478 | r = manager_add_job(u->manager, JOB_START, other, u->on_failure_job_mode, true, NULL, NULL); |
c1b6628d ZJS |
1479 | if (r < 0) |
1480 | log_error_unit(u->id, "Failed to enqueue OnFailure= job: %s", strerror(-r)); | |
222ae6a8 | 1481 | } |
c0daa706 LP |
1482 | } |
1483 | ||
3ecaa09b LP |
1484 | void unit_trigger_notify(Unit *u) { |
1485 | Unit *other; | |
1486 | Iterator i; | |
1487 | ||
1488 | assert(u); | |
1489 | ||
1490 | SET_FOREACH(other, u->dependencies[UNIT_TRIGGERED_BY], i) | |
1491 | if (UNIT_VTABLE(other)->trigger_notify) | |
1492 | UNIT_VTABLE(other)->trigger_notify(other, u); | |
1493 | } | |
1494 | ||
e2f3b44c | 1495 | void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_success) { |
546ac4f0 | 1496 | Manager *m; |
7e6e7b06 | 1497 | bool unexpected; |
a096ed36 | 1498 | |
87f0e418 LP |
1499 | assert(u); |
1500 | assert(os < _UNIT_ACTIVE_STATE_MAX); | |
1501 | assert(ns < _UNIT_ACTIVE_STATE_MAX); | |
87f0e418 | 1502 | |
8e471ccd LP |
1503 | /* Note that this is called for all low-level state changes, |
1504 | * even if they might map to the same high-level | |
1505 | * UnitActiveState! That means that ns == os is OK an expected | |
c5315881 | 1506 | * behavior here. For example: if a mount point is remounted |
cd6d0a45 | 1507 | * this function will be called too! */ |
87f0e418 | 1508 | |
546ac4f0 MS |
1509 | m = u->manager; |
1510 | ||
1511 | if (m->n_reloading <= 0) { | |
bdbf9951 | 1512 | dual_timestamp ts; |
173e3821 | 1513 | |
bdbf9951 | 1514 | dual_timestamp_get(&ts); |
173e3821 | 1515 | |
bdbf9951 | 1516 | if (UNIT_IS_INACTIVE_OR_FAILED(os) && !UNIT_IS_INACTIVE_OR_FAILED(ns)) |
ac155bb8 | 1517 | u->inactive_exit_timestamp = ts; |
bdbf9951 | 1518 | else if (!UNIT_IS_INACTIVE_OR_FAILED(os) && UNIT_IS_INACTIVE_OR_FAILED(ns)) |
ac155bb8 | 1519 | u->inactive_enter_timestamp = ts; |
bdbf9951 LP |
1520 | |
1521 | if (!UNIT_IS_ACTIVE_OR_RELOADING(os) && UNIT_IS_ACTIVE_OR_RELOADING(ns)) | |
ac155bb8 | 1522 | u->active_enter_timestamp = ts; |
bdbf9951 | 1523 | else if (UNIT_IS_ACTIVE_OR_RELOADING(os) && !UNIT_IS_ACTIVE_OR_RELOADING(ns)) |
ac155bb8 | 1524 | u->active_exit_timestamp = ts; |
bdbf9951 | 1525 | } |
87f0e418 | 1526 | |
fdf20a31 | 1527 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
4ad49000 | 1528 | unit_destroy_cgroup(u); |
fb385181 | 1529 | |
9cd86184 OB |
1530 | /* Note that this doesn't apply to RemainAfterExit services exiting |
1531 | * sucessfully, since there's no change of state in that case. Which is | |
1532 | * why it is handled in service_set_state() */ | |
7ed9f6cd MS |
1533 | if (UNIT_IS_INACTIVE_OR_FAILED(os) != UNIT_IS_INACTIVE_OR_FAILED(ns)) { |
1534 | ExecContext *ec = unit_get_exec_context(u); | |
1535 | if (ec && exec_context_may_touch_console(ec)) { | |
31a7eb86 ZJS |
1536 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) { |
1537 | m->n_on_console --; | |
1538 | ||
1539 | if (m->n_on_console == 0) | |
1540 | /* unset no_console_output flag, since the console is free */ | |
2f38577f | 1541 | m->no_console_output = false; |
31a7eb86 ZJS |
1542 | } else |
1543 | m->n_on_console ++; | |
7ed9f6cd MS |
1544 | } |
1545 | } | |
1546 | ||
ac155bb8 | 1547 | if (u->job) { |
7e6e7b06 | 1548 | unexpected = false; |
87f0e418 | 1549 | |
ac155bb8 | 1550 | if (u->job->state == JOB_WAITING) |
87f0e418 LP |
1551 | |
1552 | /* So we reached a different state for this | |
1553 | * job. Let's see if we can run it now if it | |
1554 | * failed previously due to EAGAIN. */ | |
ac155bb8 | 1555 | job_add_to_run_queue(u->job); |
87f0e418 | 1556 | |
b410e6b9 | 1557 | /* Let's check whether this state change constitutes a |
35b8ca3a | 1558 | * finished job, or maybe contradicts a running job and |
b410e6b9 | 1559 | * hence needs to invalidate jobs. */ |
87f0e418 | 1560 | |
ac155bb8 | 1561 | switch (u->job->type) { |
87f0e418 | 1562 | |
b410e6b9 LP |
1563 | case JOB_START: |
1564 | case JOB_VERIFY_ACTIVE: | |
87f0e418 | 1565 | |
b410e6b9 | 1566 | if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) |
5273510e | 1567 | job_finish_and_invalidate(u->job, JOB_DONE, true); |
ac155bb8 | 1568 | else if (u->job->state == JOB_RUNNING && ns != UNIT_ACTIVATING) { |
b410e6b9 | 1569 | unexpected = true; |
41b02ec7 | 1570 | |
fdf20a31 | 1571 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
5273510e | 1572 | job_finish_and_invalidate(u->job, ns == UNIT_FAILED ? JOB_FAILED : JOB_DONE, true); |
b410e6b9 | 1573 | } |
87f0e418 | 1574 | |
b410e6b9 | 1575 | break; |
87f0e418 | 1576 | |
b410e6b9 LP |
1577 | case JOB_RELOAD: |
1578 | case JOB_RELOAD_OR_START: | |
87f0e418 | 1579 | |
ac155bb8 | 1580 | if (u->job->state == JOB_RUNNING) { |
a096ed36 | 1581 | if (ns == UNIT_ACTIVE) |
5273510e | 1582 | job_finish_and_invalidate(u->job, reload_success ? JOB_DONE : JOB_FAILED, true); |
032ff4af | 1583 | else if (ns != UNIT_ACTIVATING && ns != UNIT_RELOADING) { |
a096ed36 | 1584 | unexpected = true; |
41b02ec7 | 1585 | |
fdf20a31 | 1586 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
5273510e | 1587 | job_finish_and_invalidate(u->job, ns == UNIT_FAILED ? JOB_FAILED : JOB_DONE, true); |
a096ed36 | 1588 | } |
b410e6b9 | 1589 | } |
87f0e418 | 1590 | |
b410e6b9 | 1591 | break; |
87f0e418 | 1592 | |
b410e6b9 LP |
1593 | case JOB_STOP: |
1594 | case JOB_RESTART: | |
1595 | case JOB_TRY_RESTART: | |
87f0e418 | 1596 | |
fdf20a31 | 1597 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
5273510e | 1598 | job_finish_and_invalidate(u->job, JOB_DONE, true); |
ac155bb8 | 1599 | else if (u->job->state == JOB_RUNNING && ns != UNIT_DEACTIVATING) { |
b410e6b9 | 1600 | unexpected = true; |
5273510e | 1601 | job_finish_and_invalidate(u->job, JOB_FAILED, true); |
b410e6b9 | 1602 | } |
87f0e418 | 1603 | |
b410e6b9 | 1604 | break; |
87f0e418 | 1605 | |
b410e6b9 LP |
1606 | default: |
1607 | assert_not_reached("Job type unknown"); | |
87f0e418 | 1608 | } |
87f0e418 | 1609 | |
7e6e7b06 LP |
1610 | } else |
1611 | unexpected = true; | |
1612 | ||
546ac4f0 | 1613 | if (m->n_reloading <= 0) { |
f3bff0eb | 1614 | |
bdbf9951 LP |
1615 | /* If this state change happened without being |
1616 | * requested by a job, then let's retroactively start | |
1617 | * or stop dependencies. We skip that step when | |
1618 | * deserializing, since we don't want to create any | |
1619 | * additional jobs just because something is already | |
1620 | * activated. */ | |
1621 | ||
1622 | if (unexpected) { | |
1623 | if (UNIT_IS_INACTIVE_OR_FAILED(os) && UNIT_IS_ACTIVE_OR_ACTIVATING(ns)) | |
1624 | retroactively_start_dependencies(u); | |
1625 | else if (UNIT_IS_ACTIVE_OR_ACTIVATING(os) && UNIT_IS_INACTIVE_OR_DEACTIVATING(ns)) | |
1626 | retroactively_stop_dependencies(u); | |
1627 | } | |
5de9682c | 1628 | |
cd0504d0 MS |
1629 | /* stop unneeded units regardless if going down was expected or not */ |
1630 | if (UNIT_IS_ACTIVE_OR_ACTIVATING(os) && UNIT_IS_INACTIVE_OR_DEACTIVATING(ns)) | |
1631 | check_unneeded_dependencies(u); | |
1632 | ||
bdbf9951 | 1633 | if (ns != os && ns == UNIT_FAILED) { |
c1b6628d | 1634 | log_notice_unit(u->id, |
fcf8c440 | 1635 | "Unit %s entered failed state.", u->id); |
3ecaa09b | 1636 | unit_start_on_failure(u); |
cd6d0a45 | 1637 | } |
3b2775c5 | 1638 | } |
e537352b | 1639 | |
3b2775c5 LP |
1640 | /* Some names are special */ |
1641 | if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) { | |
1642 | ||
1643 | if (unit_has_name(u, SPECIAL_DBUS_SERVICE)) | |
1644 | /* The bus just might have become available, | |
1645 | * hence try to connect to it, if we aren't | |
1646 | * yet connected. */ | |
546ac4f0 | 1647 | bus_init(m, true); |
3b2775c5 | 1648 | |
ac155bb8 | 1649 | if (u->type == UNIT_SERVICE && |
3b2775c5 | 1650 | !UNIT_IS_ACTIVE_OR_RELOADING(os) && |
546ac4f0 | 1651 | m->n_reloading <= 0) { |
3b2775c5 | 1652 | /* Write audit record if we have just finished starting up */ |
546ac4f0 | 1653 | manager_send_unit_audit(m, u, AUDIT_SERVICE_START, true); |
ac155bb8 | 1654 | u->in_audit = true; |
3b2775c5 | 1655 | } |
e983b760 | 1656 | |
3b2775c5 | 1657 | if (!UNIT_IS_ACTIVE_OR_RELOADING(os)) |
546ac4f0 | 1658 | manager_send_unit_plymouth(m, u); |
bdbf9951 | 1659 | |
3b2775c5 | 1660 | } else { |
bdbf9951 | 1661 | |
3b2775c5 LP |
1662 | /* We don't care about D-Bus here, since we'll get an |
1663 | * asynchronous notification for it anyway. */ | |
cd6d0a45 | 1664 | |
ac155bb8 | 1665 | if (u->type == UNIT_SERVICE && |
3b2775c5 LP |
1666 | UNIT_IS_INACTIVE_OR_FAILED(ns) && |
1667 | !UNIT_IS_INACTIVE_OR_FAILED(os) && | |
546ac4f0 | 1668 | m->n_reloading <= 0) { |
4927fcae | 1669 | |
3b2775c5 LP |
1670 | /* Hmm, if there was no start record written |
1671 | * write it now, so that we always have a nice | |
1672 | * pair */ | |
ac155bb8 | 1673 | if (!u->in_audit) { |
546ac4f0 | 1674 | manager_send_unit_audit(m, u, AUDIT_SERVICE_START, ns == UNIT_INACTIVE); |
cd6d0a45 | 1675 | |
3b2775c5 | 1676 | if (ns == UNIT_INACTIVE) |
546ac4f0 | 1677 | manager_send_unit_audit(m, u, AUDIT_SERVICE_STOP, true); |
3b2775c5 LP |
1678 | } else |
1679 | /* Write audit record if we have just finished shutting down */ | |
546ac4f0 | 1680 | manager_send_unit_audit(m, u, AUDIT_SERVICE_STOP, ns == UNIT_INACTIVE); |
bdbf9951 | 1681 | |
ac155bb8 | 1682 | u->in_audit = false; |
cd6d0a45 | 1683 | } |
f278026d LP |
1684 | } |
1685 | ||
546ac4f0 | 1686 | manager_recheck_journal(m); |
3ecaa09b | 1687 | unit_trigger_notify(u); |
3b2775c5 | 1688 | |
f3bff0eb LP |
1689 | /* Maybe we finished startup and are now ready for being |
1690 | * stopped because unneeded? */ | |
bf6dcfa6 OS |
1691 | if (u->manager->n_reloading <= 0) |
1692 | unit_check_unneeded(u); | |
c1e1601e LP |
1693 | |
1694 | unit_add_to_dbus_queue(u); | |
701cc384 | 1695 | unit_add_to_gc_queue(u); |
87f0e418 LP |
1696 | } |
1697 | ||
87f0e418 LP |
1698 | int unit_watch_pid(Unit *u, pid_t pid) { |
1699 | assert(u); | |
1700 | assert(pid >= 1); | |
1701 | ||
05e343b7 LP |
1702 | /* Watch a specific PID. We only support one unit watching |
1703 | * each PID for now. */ | |
1704 | ||
ac155bb8 | 1705 | return hashmap_put(u->manager->watch_pids, LONG_TO_PTR(pid), u); |
87f0e418 LP |
1706 | } |
1707 | ||
1708 | void unit_unwatch_pid(Unit *u, pid_t pid) { | |
1709 | assert(u); | |
1710 | assert(pid >= 1); | |
1711 | ||
ac155bb8 | 1712 | hashmap_remove_value(u->manager->watch_pids, LONG_TO_PTR(pid), u); |
87f0e418 LP |
1713 | } |
1714 | ||
87f0e418 LP |
1715 | bool unit_job_is_applicable(Unit *u, JobType j) { |
1716 | assert(u); | |
1717 | assert(j >= 0 && j < _JOB_TYPE_MAX); | |
1718 | ||
1719 | switch (j) { | |
1720 | ||
1721 | case JOB_VERIFY_ACTIVE: | |
1722 | case JOB_START: | |
57339f47 | 1723 | case JOB_STOP: |
e0209d83 | 1724 | case JOB_NOP: |
87f0e418 LP |
1725 | return true; |
1726 | ||
87f0e418 LP |
1727 | case JOB_RESTART: |
1728 | case JOB_TRY_RESTART: | |
1729 | return unit_can_start(u); | |
1730 | ||
1731 | case JOB_RELOAD: | |
1732 | return unit_can_reload(u); | |
1733 | ||
1734 | case JOB_RELOAD_OR_START: | |
1735 | return unit_can_reload(u) && unit_can_start(u); | |
1736 | ||
1737 | default: | |
1738 | assert_not_reached("Invalid job type"); | |
1739 | } | |
1740 | } | |
1741 | ||
701cc384 | 1742 | int unit_add_dependency(Unit *u, UnitDependency d, Unit *other, bool add_reference) { |
87f0e418 LP |
1743 | |
1744 | static const UnitDependency inverse_table[_UNIT_DEPENDENCY_MAX] = { | |
1745 | [UNIT_REQUIRES] = UNIT_REQUIRED_BY, | |
9e2f7c11 | 1746 | [UNIT_REQUIRES_OVERRIDABLE] = UNIT_REQUIRED_BY_OVERRIDABLE, |
87f0e418 LP |
1747 | [UNIT_WANTS] = UNIT_WANTED_BY, |
1748 | [UNIT_REQUISITE] = UNIT_REQUIRED_BY, | |
9e2f7c11 | 1749 | [UNIT_REQUISITE_OVERRIDABLE] = UNIT_REQUIRED_BY_OVERRIDABLE, |
7f2cddae | 1750 | [UNIT_BINDS_TO] = UNIT_BOUND_BY, |
60649f17 | 1751 | [UNIT_PART_OF] = UNIT_CONSISTS_OF, |
87f0e418 | 1752 | [UNIT_REQUIRED_BY] = _UNIT_DEPENDENCY_INVALID, |
9e2f7c11 | 1753 | [UNIT_REQUIRED_BY_OVERRIDABLE] = _UNIT_DEPENDENCY_INVALID, |
87f0e418 | 1754 | [UNIT_WANTED_BY] = _UNIT_DEPENDENCY_INVALID, |
7f2cddae | 1755 | [UNIT_BOUND_BY] = UNIT_BINDS_TO, |
60649f17 | 1756 | [UNIT_CONSISTS_OF] = UNIT_PART_OF, |
69dd2852 LP |
1757 | [UNIT_CONFLICTS] = UNIT_CONFLICTED_BY, |
1758 | [UNIT_CONFLICTED_BY] = UNIT_CONFLICTS, | |
87f0e418 | 1759 | [UNIT_BEFORE] = UNIT_AFTER, |
701cc384 | 1760 | [UNIT_AFTER] = UNIT_BEFORE, |
5de9682c | 1761 | [UNIT_ON_FAILURE] = _UNIT_DEPENDENCY_INVALID, |
701cc384 | 1762 | [UNIT_REFERENCES] = UNIT_REFERENCED_BY, |
57020a3a LP |
1763 | [UNIT_REFERENCED_BY] = UNIT_REFERENCES, |
1764 | [UNIT_TRIGGERS] = UNIT_TRIGGERED_BY, | |
4dcc1cb4 | 1765 | [UNIT_TRIGGERED_BY] = UNIT_TRIGGERS, |
7f2cddae | 1766 | [UNIT_PROPAGATES_RELOAD_TO] = UNIT_RELOAD_PROPAGATED_FROM, |
85e9a101 | 1767 | [UNIT_RELOAD_PROPAGATED_FROM] = UNIT_PROPAGATES_RELOAD_TO, |
613b411c | 1768 | [UNIT_JOINS_NAMESPACE_OF] = UNIT_JOINS_NAMESPACE_OF, |
87f0e418 | 1769 | }; |
701cc384 | 1770 | int r, q = 0, v = 0, w = 0; |
87f0e418 LP |
1771 | |
1772 | assert(u); | |
1773 | assert(d >= 0 && d < _UNIT_DEPENDENCY_MAX); | |
87f0e418 LP |
1774 | assert(other); |
1775 | ||
9f151f29 LP |
1776 | u = unit_follow_merge(u); |
1777 | other = unit_follow_merge(other); | |
1778 | ||
87f0e418 LP |
1779 | /* We won't allow dependencies on ourselves. We will not |
1780 | * consider them an error however. */ | |
1781 | if (u == other) | |
1782 | return 0; | |
1783 | ||
613b411c LP |
1784 | r = set_ensure_allocated(&u->dependencies[d], trivial_hash_func, trivial_compare_func); |
1785 | if (r < 0) | |
87f0e418 LP |
1786 | return r; |
1787 | ||
613b411c LP |
1788 | if (inverse_table[d] != _UNIT_DEPENDENCY_INVALID) { |
1789 | r = set_ensure_allocated(&other->dependencies[inverse_table[d]], trivial_hash_func, trivial_compare_func); | |
1790 | if (r < 0) | |
1791 | return r; | |
1792 | } | |
1793 | ||
1794 | if (add_reference) { | |
1795 | r = set_ensure_allocated(&u->dependencies[UNIT_REFERENCES], trivial_hash_func, trivial_compare_func); | |
1796 | if (r < 0) | |
5de9682c LP |
1797 | return r; |
1798 | ||
613b411c LP |
1799 | r = set_ensure_allocated(&other->dependencies[UNIT_REFERENCED_BY], trivial_hash_func, trivial_compare_func); |
1800 | if (r < 0) | |
701cc384 | 1801 | return r; |
613b411c | 1802 | } |
87f0e418 | 1803 | |
613b411c LP |
1804 | q = set_put(u->dependencies[d], other); |
1805 | if (q < 0) | |
701cc384 | 1806 | return q; |
87f0e418 | 1807 | |
613b411c LP |
1808 | if (inverse_table[d] != _UNIT_DEPENDENCY_INVALID && inverse_table[d] != d) { |
1809 | v = set_put(other->dependencies[inverse_table[d]], u); | |
1810 | if (v < 0) { | |
5de9682c LP |
1811 | r = v; |
1812 | goto fail; | |
1813 | } | |
613b411c | 1814 | } |
701cc384 LP |
1815 | |
1816 | if (add_reference) { | |
613b411c LP |
1817 | w = set_put(u->dependencies[UNIT_REFERENCES], other); |
1818 | if (w < 0) { | |
701cc384 LP |
1819 | r = w; |
1820 | goto fail; | |
1821 | } | |
1822 | ||
613b411c LP |
1823 | r = set_put(other->dependencies[UNIT_REFERENCED_BY], u); |
1824 | if (r < 0) | |
701cc384 | 1825 | goto fail; |
87f0e418 LP |
1826 | } |
1827 | ||
c1e1601e | 1828 | unit_add_to_dbus_queue(u); |
87f0e418 | 1829 | return 0; |
701cc384 LP |
1830 | |
1831 | fail: | |
1832 | if (q > 0) | |
ac155bb8 | 1833 | set_remove(u->dependencies[d], other); |
701cc384 LP |
1834 | |
1835 | if (v > 0) | |
ac155bb8 | 1836 | set_remove(other->dependencies[inverse_table[d]], u); |
701cc384 LP |
1837 | |
1838 | if (w > 0) | |
ac155bb8 | 1839 | set_remove(u->dependencies[UNIT_REFERENCES], other); |
701cc384 LP |
1840 | |
1841 | return r; | |
87f0e418 | 1842 | } |
0301abf4 | 1843 | |
2c966c03 LP |
1844 | int unit_add_two_dependencies(Unit *u, UnitDependency d, UnitDependency e, Unit *other, bool add_reference) { |
1845 | int r; | |
1846 | ||
1847 | assert(u); | |
1848 | ||
1849 | if ((r = unit_add_dependency(u, d, other, add_reference)) < 0) | |
1850 | return r; | |
1851 | ||
1852 | if ((r = unit_add_dependency(u, e, other, add_reference)) < 0) | |
1853 | return r; | |
1854 | ||
1855 | return 0; | |
1856 | } | |
1857 | ||
9e2f7c11 LP |
1858 | static const char *resolve_template(Unit *u, const char *name, const char*path, char **p) { |
1859 | char *s; | |
1860 | ||
1861 | assert(u); | |
1862 | assert(name || path); | |
8afbb8e1 | 1863 | assert(p); |
9e2f7c11 LP |
1864 | |
1865 | if (!name) | |
2b6bf07d | 1866 | name = basename(path); |
9e2f7c11 LP |
1867 | |
1868 | if (!unit_name_is_template(name)) { | |
1869 | *p = NULL; | |
1870 | return name; | |
1871 | } | |
1872 | ||
ac155bb8 MS |
1873 | if (u->instance) |
1874 | s = unit_name_replace_instance(name, u->instance); | |
9e2f7c11 | 1875 | else { |
ae018d9b | 1876 | _cleanup_free_ char *i = NULL; |
9e2f7c11 | 1877 | |
8afbb8e1 LP |
1878 | i = unit_name_to_prefix(u->id); |
1879 | if (!i) | |
9e2f7c11 LP |
1880 | return NULL; |
1881 | ||
1882 | s = unit_name_replace_instance(name, i); | |
9e2f7c11 LP |
1883 | } |
1884 | ||
1885 | if (!s) | |
1886 | return NULL; | |
1887 | ||
1888 | *p = s; | |
1889 | return s; | |
1890 | } | |
1891 | ||
701cc384 | 1892 | int unit_add_dependency_by_name(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) { |
09b6b09f LP |
1893 | Unit *other; |
1894 | int r; | |
8afbb8e1 | 1895 | _cleanup_free_ char *s = NULL; |
09b6b09f | 1896 | |
9e2f7c11 LP |
1897 | assert(u); |
1898 | assert(name || path); | |
09b6b09f | 1899 | |
8afbb8e1 LP |
1900 | name = resolve_template(u, name, path, &s); |
1901 | if (!name) | |
9e2f7c11 | 1902 | return -ENOMEM; |
09b6b09f | 1903 | |
8afbb8e1 LP |
1904 | r = manager_load_unit(u->manager, name, path, NULL, &other); |
1905 | if (r < 0) | |
1906 | return r; | |
9e2f7c11 | 1907 | |
8afbb8e1 | 1908 | return unit_add_dependency(u, d, other, add_reference); |
09b6b09f LP |
1909 | } |
1910 | ||
2c966c03 LP |
1911 | int unit_add_two_dependencies_by_name(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference) { |
1912 | Unit *other; | |
1913 | int r; | |
68eda4bd | 1914 | _cleanup_free_ char *s = NULL; |
2c966c03 LP |
1915 | |
1916 | assert(u); | |
1917 | assert(name || path); | |
1918 | ||
1919 | if (!(name = resolve_template(u, name, path, &s))) | |
1920 | return -ENOMEM; | |
1921 | ||
ac155bb8 | 1922 | if ((r = manager_load_unit(u->manager, name, path, NULL, &other)) < 0) |
68eda4bd | 1923 | return r; |
2c966c03 LP |
1924 | |
1925 | r = unit_add_two_dependencies(u, d, e, other, add_reference); | |
1926 | ||
2c966c03 LP |
1927 | return r; |
1928 | } | |
1929 | ||
701cc384 | 1930 | int unit_add_dependency_by_name_inverse(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) { |
bd77d0fc LP |
1931 | Unit *other; |
1932 | int r; | |
68eda4bd | 1933 | _cleanup_free_ char *s = NULL; |
bd77d0fc | 1934 | |
9e2f7c11 LP |
1935 | assert(u); |
1936 | assert(name || path); | |
bd77d0fc | 1937 | |
9e2f7c11 LP |
1938 | if (!(name = resolve_template(u, name, path, &s))) |
1939 | return -ENOMEM; | |
bd77d0fc | 1940 | |
ac155bb8 | 1941 | if ((r = manager_load_unit(u->manager, name, path, NULL, &other)) < 0) |
68eda4bd | 1942 | return r; |
9e2f7c11 | 1943 | |
701cc384 | 1944 | r = unit_add_dependency(other, d, u, add_reference); |
9e2f7c11 | 1945 | |
9e2f7c11 | 1946 | return r; |
bd77d0fc LP |
1947 | } |
1948 | ||
2c966c03 LP |
1949 | int unit_add_two_dependencies_by_name_inverse(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference) { |
1950 | Unit *other; | |
1951 | int r; | |
68eda4bd | 1952 | _cleanup_free_ char *s = NULL; |
2c966c03 LP |
1953 | |
1954 | assert(u); | |
1955 | assert(name || path); | |
1956 | ||
1957 | if (!(name = resolve_template(u, name, path, &s))) | |
1958 | return -ENOMEM; | |
1959 | ||
ac155bb8 | 1960 | if ((r = manager_load_unit(u->manager, name, path, NULL, &other)) < 0) |
68eda4bd | 1961 | return r; |
2c966c03 LP |
1962 | |
1963 | if ((r = unit_add_two_dependencies(other, d, e, u, add_reference)) < 0) | |
68eda4bd | 1964 | return r; |
2c966c03 | 1965 | |
2c966c03 LP |
1966 | return r; |
1967 | } | |
1968 | ||
0301abf4 | 1969 | int set_unit_path(const char *p) { |
26d04f86 | 1970 | _cleanup_free_ char *c = NULL; |
0301abf4 LP |
1971 | |
1972 | /* This is mostly for debug purposes */ | |
26d04f86 LP |
1973 | c = path_make_absolute_cwd(p); |
1974 | if (setenv("SYSTEMD_UNIT_PATH", c, 0) < 0) | |
1975 | return -errno; | |
0301abf4 LP |
1976 | |
1977 | return 0; | |
1978 | } | |
88066b3a | 1979 | |
ea430986 | 1980 | char *unit_dbus_path(Unit *u) { |
ea430986 LP |
1981 | assert(u); |
1982 | ||
ac155bb8 | 1983 | if (!u->id) |
04ade7d2 LP |
1984 | return NULL; |
1985 | ||
48899192 | 1986 | return unit_dbus_path_from_name(u->id); |
ea430986 LP |
1987 | } |
1988 | ||
41f9172f | 1989 | char *unit_default_cgroup_path(Unit *u) { |
d7bd3de0 | 1990 | _cleanup_free_ char *escaped = NULL, *slice = NULL; |
a016b922 | 1991 | int r; |
5954c074 | 1992 | |
013b87c0 LP |
1993 | assert(u); |
1994 | ||
4ad49000 LP |
1995 | if (unit_has_name(u, SPECIAL_ROOT_SLICE)) |
1996 | return strdup(u->manager->cgroup_root); | |
1997 | ||
1998 | if (UNIT_ISSET(u->slice) && !unit_has_name(UNIT_DEREF(u->slice), SPECIAL_ROOT_SLICE)) { | |
a016b922 LP |
1999 | r = cg_slice_to_path(UNIT_DEREF(u->slice)->id, &slice); |
2000 | if (r < 0) | |
2001 | return NULL; | |
2002 | } | |
2003 | ||
d7bd3de0 LP |
2004 | escaped = cg_escape(u->id); |
2005 | if (!escaped) | |
5954c074 LP |
2006 | return NULL; |
2007 | ||
d7bd3de0 LP |
2008 | if (slice) |
2009 | return strjoin(u->manager->cgroup_root, "/", slice, "/", escaped, NULL); | |
2010 | else | |
2011 | return strjoin(u->manager->cgroup_root, "/", escaped, NULL); | |
013b87c0 LP |
2012 | } |
2013 | ||
a016b922 | 2014 | int unit_add_default_slice(Unit *u) { |
a8833944 LP |
2015 | _cleanup_free_ char *b = NULL; |
2016 | const char *slice_name; | |
a016b922 LP |
2017 | Unit *slice; |
2018 | int r; | |
2019 | ||
2020 | assert(u); | |
2021 | ||
9444b1f2 | 2022 | if (UNIT_ISSET(u->slice)) |
a016b922 LP |
2023 | return 0; |
2024 | ||
4ad49000 | 2025 | if (!unit_get_cgroup_context(u)) |
a016b922 LP |
2026 | return 0; |
2027 | ||
a8833944 LP |
2028 | if (u->instance) { |
2029 | _cleanup_free_ char *prefix = NULL, *escaped = NULL; | |
68eda4bd | 2030 | |
a8833944 LP |
2031 | /* Implicitly place all instantiated units in their |
2032 | * own per-template slice */ | |
2033 | ||
2034 | prefix = unit_name_to_prefix(u->id); | |
2035 | if (!prefix) | |
2036 | return -ENOMEM; | |
2037 | ||
2038 | /* The prefix is already escaped, but it might include | |
2039 | * "-" which has a special meaning for slice units, | |
2040 | * hence escape it here extra. */ | |
2041 | escaped = strreplace(prefix, "-", "\\x2d"); | |
2042 | if (!escaped) | |
2043 | return -ENOMEM; | |
2044 | ||
2045 | if (u->manager->running_as == SYSTEMD_SYSTEM) | |
2046 | b = strjoin("system-", escaped, ".slice", NULL); | |
2047 | else | |
2048 | b = strappend(escaped, ".slice"); | |
2049 | if (!b) | |
2050 | return -ENOMEM; | |
2051 | ||
2052 | slice_name = b; | |
2053 | } else | |
2054 | slice_name = | |
2055 | u->manager->running_as == SYSTEMD_SYSTEM | |
2056 | ? SPECIAL_SYSTEM_SLICE | |
2057 | : SPECIAL_ROOT_SLICE; | |
2058 | ||
2059 | r = manager_load_unit(u->manager, slice_name, NULL, NULL, &slice); | |
a016b922 LP |
2060 | if (r < 0) |
2061 | return r; | |
2062 | ||
2063 | unit_ref_set(&u->slice, slice); | |
2064 | return 0; | |
2065 | } | |
2066 | ||
9444b1f2 LP |
2067 | const char *unit_slice_name(Unit *u) { |
2068 | assert(u); | |
2069 | ||
2070 | if (!UNIT_ISSET(u->slice)) | |
2071 | return NULL; | |
2072 | ||
2073 | return UNIT_DEREF(u->slice)->id; | |
2074 | } | |
2075 | ||
f6ff8c29 | 2076 | int unit_load_related_unit(Unit *u, const char *type, Unit **_found) { |
78edb35a | 2077 | _cleanup_free_ char *t = NULL; |
f6ff8c29 LP |
2078 | int r; |
2079 | ||
2080 | assert(u); | |
2081 | assert(type); | |
2082 | assert(_found); | |
2083 | ||
78edb35a LP |
2084 | t = unit_name_change_suffix(u->id, type); |
2085 | if (!t) | |
f6ff8c29 LP |
2086 | return -ENOMEM; |
2087 | ||
2088 | assert(!unit_has_name(u, t)); | |
2089 | ||
ac155bb8 | 2090 | r = manager_load_unit(u->manager, t, NULL, NULL, _found); |
9e2f7c11 | 2091 | assert(r < 0 || *_found != u); |
f6ff8c29 LP |
2092 | return r; |
2093 | } | |
2094 | ||
05e343b7 LP |
2095 | int unit_watch_bus_name(Unit *u, const char *name) { |
2096 | assert(u); | |
2097 | assert(name); | |
2098 | ||
2099 | /* Watch a specific name on the bus. We only support one unit | |
2100 | * watching each name for now. */ | |
2101 | ||
ac155bb8 | 2102 | return hashmap_put(u->manager->watch_bus, name, u); |
05e343b7 LP |
2103 | } |
2104 | ||
2105 | void unit_unwatch_bus_name(Unit *u, const char *name) { | |
2106 | assert(u); | |
2107 | assert(name); | |
2108 | ||
ac155bb8 | 2109 | hashmap_remove_value(u->manager->watch_bus, name, u); |
05e343b7 LP |
2110 | } |
2111 | ||
a16e1123 LP |
2112 | bool unit_can_serialize(Unit *u) { |
2113 | assert(u); | |
2114 | ||
2115 | return UNIT_VTABLE(u)->serialize && UNIT_VTABLE(u)->deserialize_item; | |
2116 | } | |
2117 | ||
6b78f9b4 | 2118 | int unit_serialize(Unit *u, FILE *f, FDSet *fds, bool serialize_jobs) { |
613b411c | 2119 | ExecRuntime *rt; |
a16e1123 LP |
2120 | int r; |
2121 | ||
2122 | assert(u); | |
2123 | assert(f); | |
2124 | assert(fds); | |
2125 | ||
2126 | if (!unit_can_serialize(u)) | |
2127 | return 0; | |
2128 | ||
6fa48533 LP |
2129 | r = UNIT_VTABLE(u)->serialize(u, f, fds); |
2130 | if (r < 0) | |
a16e1123 LP |
2131 | return r; |
2132 | ||
613b411c LP |
2133 | rt = unit_get_exec_runtime(u); |
2134 | if (rt) { | |
2135 | r = exec_runtime_serialize(rt, u, f, fds); | |
2136 | if (r < 0) | |
2137 | return r; | |
e0209d83 MS |
2138 | } |
2139 | ||
ac155bb8 MS |
2140 | dual_timestamp_serialize(f, "inactive-exit-timestamp", &u->inactive_exit_timestamp); |
2141 | dual_timestamp_serialize(f, "active-enter-timestamp", &u->active_enter_timestamp); | |
2142 | dual_timestamp_serialize(f, "active-exit-timestamp", &u->active_exit_timestamp); | |
2143 | dual_timestamp_serialize(f, "inactive-enter-timestamp", &u->inactive_enter_timestamp); | |
2144 | dual_timestamp_serialize(f, "condition-timestamp", &u->condition_timestamp); | |
2791a8f8 | 2145 | |
ac155bb8 MS |
2146 | if (dual_timestamp_is_set(&u->condition_timestamp)) |
2147 | unit_serialize_item(u, f, "condition-result", yes_no(u->condition_result)); | |
10717a1a | 2148 | |
c2756a68 LP |
2149 | unit_serialize_item(u, f, "transient", yes_no(u->transient)); |
2150 | ||
2151 | if (u->cgroup_path) | |
2152 | unit_serialize_item(u, f, "cgroup", u->cgroup_path); | |
2153 | ||
613b411c LP |
2154 | if (serialize_jobs) { |
2155 | if (u->job) { | |
2156 | fprintf(f, "job\n"); | |
2157 | job_serialize(u->job, f, fds); | |
2158 | } | |
2159 | ||
2160 | if (u->nop_job) { | |
2161 | fprintf(f, "job\n"); | |
2162 | job_serialize(u->nop_job, f, fds); | |
2163 | } | |
2164 | } | |
2165 | ||
a16e1123 LP |
2166 | /* End marker */ |
2167 | fputc('\n', f); | |
2168 | return 0; | |
2169 | } | |
2170 | ||
2171 | void unit_serialize_item_format(Unit *u, FILE *f, const char *key, const char *format, ...) { | |
2172 | va_list ap; | |
2173 | ||
2174 | assert(u); | |
2175 | assert(f); | |
2176 | assert(key); | |
2177 | assert(format); | |
2178 | ||
2179 | fputs(key, f); | |
2180 | fputc('=', f); | |
2181 | ||
2182 | va_start(ap, format); | |
2183 | vfprintf(f, format, ap); | |
2184 | va_end(ap); | |
2185 | ||
2186 | fputc('\n', f); | |
2187 | } | |
2188 | ||
2189 | void unit_serialize_item(Unit *u, FILE *f, const char *key, const char *value) { | |
2190 | assert(u); | |
2191 | assert(f); | |
2192 | assert(key); | |
2193 | assert(value); | |
2194 | ||
2195 | fprintf(f, "%s=%s\n", key, value); | |
2196 | } | |
2197 | ||
2198 | int unit_deserialize(Unit *u, FILE *f, FDSet *fds) { | |
613b411c | 2199 | size_t offset; |
28b99ccd | 2200 | ExecRuntime **rt = NULL; |
a16e1123 LP |
2201 | int r; |
2202 | ||
2203 | assert(u); | |
2204 | assert(f); | |
2205 | assert(fds); | |
2206 | ||
2207 | if (!unit_can_serialize(u)) | |
2208 | return 0; | |
2209 | ||
613b411c LP |
2210 | offset = UNIT_VTABLE(u)->exec_runtime_offset; |
2211 | if (offset > 0) | |
2212 | rt = (ExecRuntime**) ((uint8_t*) u + offset); | |
2213 | ||
a16e1123 | 2214 | for (;;) { |
20c03b7b | 2215 | char line[LINE_MAX], *l, *v; |
a16e1123 LP |
2216 | size_t k; |
2217 | ||
2218 | if (!fgets(line, sizeof(line), f)) { | |
2219 | if (feof(f)) | |
2220 | return 0; | |
2221 | return -errno; | |
2222 | } | |
2223 | ||
10f8e83c | 2224 | char_array_0(line); |
a16e1123 LP |
2225 | l = strstrip(line); |
2226 | ||
2227 | /* End marker */ | |
2228 | if (l[0] == 0) | |
2229 | return 0; | |
2230 | ||
2231 | k = strcspn(l, "="); | |
2232 | ||
2233 | if (l[k] == '=') { | |
2234 | l[k] = 0; | |
2235 | v = l+k+1; | |
2236 | } else | |
2237 | v = l+k; | |
2238 | ||
cca098b0 | 2239 | if (streq(l, "job")) { |
39a18c60 MS |
2240 | if (v[0] == '\0') { |
2241 | /* new-style serialized job */ | |
2242 | Job *j = job_new_raw(u); | |
2243 | if (!j) | |
2244 | return -ENOMEM; | |
2245 | ||
2246 | r = job_deserialize(j, f, fds); | |
2247 | if (r < 0) { | |
2248 | job_free(j); | |
2249 | return r; | |
2250 | } | |
cca098b0 | 2251 | |
39a18c60 MS |
2252 | r = hashmap_put(u->manager->jobs, UINT32_TO_PTR(j->id), j); |
2253 | if (r < 0) { | |
2254 | job_free(j); | |
2255 | return r; | |
2256 | } | |
e0209d83 MS |
2257 | |
2258 | r = job_install_deserialized(j); | |
2259 | if (r < 0) { | |
2260 | hashmap_remove(u->manager->jobs, UINT32_TO_PTR(j->id)); | |
2261 | job_free(j); | |
2262 | return r; | |
2263 | } | |
6b19ad24 MS |
2264 | |
2265 | if (j->state == JOB_RUNNING) | |
2266 | u->manager->n_running_jobs++; | |
39a18c60 MS |
2267 | } else { |
2268 | /* legacy */ | |
2269 | JobType type = job_type_from_string(v); | |
2270 | if (type < 0) | |
2271 | log_debug("Failed to parse job type value %s", v); | |
2272 | else | |
2273 | u->deserialized_job = type; | |
2274 | } | |
cca098b0 | 2275 | continue; |
8aaf019b | 2276 | } else if (streq(l, "inactive-exit-timestamp")) { |
ac155bb8 | 2277 | dual_timestamp_deserialize(v, &u->inactive_exit_timestamp); |
8aaf019b LP |
2278 | continue; |
2279 | } else if (streq(l, "active-enter-timestamp")) { | |
ac155bb8 | 2280 | dual_timestamp_deserialize(v, &u->active_enter_timestamp); |
8aaf019b LP |
2281 | continue; |
2282 | } else if (streq(l, "active-exit-timestamp")) { | |
ac155bb8 | 2283 | dual_timestamp_deserialize(v, &u->active_exit_timestamp); |
8aaf019b LP |
2284 | continue; |
2285 | } else if (streq(l, "inactive-enter-timestamp")) { | |
ac155bb8 | 2286 | dual_timestamp_deserialize(v, &u->inactive_enter_timestamp); |
8aaf019b | 2287 | continue; |
2791a8f8 | 2288 | } else if (streq(l, "condition-timestamp")) { |
ac155bb8 | 2289 | dual_timestamp_deserialize(v, &u->condition_timestamp); |
2791a8f8 LP |
2290 | continue; |
2291 | } else if (streq(l, "condition-result")) { | |
2292 | int b; | |
2293 | ||
c2756a68 LP |
2294 | b = parse_boolean(v); |
2295 | if (b < 0) | |
2791a8f8 LP |
2296 | log_debug("Failed to parse condition result value %s", v); |
2297 | else | |
ac155bb8 | 2298 | u->condition_result = b; |
efbac6d2 LP |
2299 | |
2300 | continue; | |
c2756a68 LP |
2301 | |
2302 | } else if (streq(l, "transient")) { | |
2303 | int b; | |
2304 | ||
2305 | b = parse_boolean(v); | |
2306 | if (b < 0) | |
2307 | log_debug("Failed to parse transient bool %s", v); | |
2308 | else | |
2309 | u->transient = b; | |
2310 | ||
2311 | continue; | |
2312 | } else if (streq(l, "cgroup")) { | |
2313 | char *s; | |
2314 | ||
2315 | s = strdup(v); | |
f440e1bb | 2316 | if (!s) |
c2756a68 LP |
2317 | return -ENOMEM; |
2318 | ||
2319 | free(u->cgroup_path); | |
2320 | u->cgroup_path = s; | |
72673e86 | 2321 | |
b58b8e11 | 2322 | assert(hashmap_put(u->manager->cgroup_unit, s, u) == 1); |
c2756a68 | 2323 | continue; |
8aaf019b | 2324 | } |
cca098b0 | 2325 | |
613b411c LP |
2326 | if (rt) { |
2327 | r = exec_runtime_deserialize_item(rt, u, l, v, fds); | |
2328 | if (r < 0) | |
2329 | return r; | |
2330 | if (r > 0) | |
2331 | continue; | |
2332 | } | |
2333 | ||
c2756a68 LP |
2334 | r = UNIT_VTABLE(u)->deserialize_item(u, l, v, fds); |
2335 | if (r < 0) | |
a16e1123 LP |
2336 | return r; |
2337 | } | |
2338 | } | |
2339 | ||
6e2ef85b LP |
2340 | int unit_add_node_link(Unit *u, const char *what, bool wants) { |
2341 | Unit *device; | |
68eda4bd | 2342 | _cleanup_free_ char *e = NULL; |
6e2ef85b LP |
2343 | int r; |
2344 | ||
2345 | assert(u); | |
2346 | ||
2347 | if (!what) | |
2348 | return 0; | |
2349 | ||
2350 | /* Adds in links to the device node that this unit is based on */ | |
2351 | ||
8407a5d0 | 2352 | if (!is_device_path(what)) |
6e2ef85b LP |
2353 | return 0; |
2354 | ||
35eb6b12 LP |
2355 | e = unit_name_from_path(what, ".device"); |
2356 | if (!e) | |
6e2ef85b LP |
2357 | return -ENOMEM; |
2358 | ||
ac155bb8 | 2359 | r = manager_load_unit(u->manager, e, NULL, NULL, &device); |
68eda4bd | 2360 | |
6e2ef85b LP |
2361 | if (r < 0) |
2362 | return r; | |
2363 | ||
faa368e3 LP |
2364 | r = unit_add_two_dependencies(u, UNIT_AFTER, UNIT_BINDS_TO, device, true); |
2365 | if (r < 0) | |
6e2ef85b LP |
2366 | return r; |
2367 | ||
faa368e3 LP |
2368 | if (wants) { |
2369 | r = unit_add_dependency(device, UNIT_WANTS, u, false); | |
2370 | if (r < 0) | |
6e2ef85b | 2371 | return r; |
faa368e3 | 2372 | } |
6e2ef85b LP |
2373 | |
2374 | return 0; | |
2375 | } | |
a16e1123 | 2376 | |
cca098b0 LP |
2377 | int unit_coldplug(Unit *u) { |
2378 | int r; | |
2379 | ||
2380 | assert(u); | |
2381 | ||
2382 | if (UNIT_VTABLE(u)->coldplug) | |
2383 | if ((r = UNIT_VTABLE(u)->coldplug(u)) < 0) | |
2384 | return r; | |
2385 | ||
39a18c60 MS |
2386 | if (u->job) { |
2387 | r = job_coldplug(u->job); | |
2388 | if (r < 0) | |
2389 | return r; | |
2390 | } else if (u->deserialized_job >= 0) { | |
2391 | /* legacy */ | |
2392 | r = manager_add_job(u->manager, u->deserialized_job, u, JOB_IGNORE_REQUIREMENTS, false, NULL, NULL); | |
2393 | if (r < 0) | |
cca098b0 LP |
2394 | return r; |
2395 | ||
ac155bb8 | 2396 | u->deserialized_job = _JOB_TYPE_INVALID; |
cca098b0 LP |
2397 | } |
2398 | ||
2399 | return 0; | |
2400 | } | |
2401 | ||
b1e2b33c CR |
2402 | #pragma GCC diagnostic push |
2403 | #pragma GCC diagnostic ignored "-Wformat-nonliteral" | |
49b1d377 MS |
2404 | void unit_status_printf(Unit *u, const char *status, const char *unit_status_msg_format) { |
2405 | manager_status_printf(u->manager, false, status, unit_status_msg_format, unit_description(u)); | |
2406 | } | |
b1e2b33c | 2407 | #pragma GCC diagnostic pop |
49b1d377 | 2408 | |
45fb0699 | 2409 | bool unit_need_daemon_reload(Unit *u) { |
ae7a7182 OS |
2410 | _cleanup_strv_free_ char **t = NULL; |
2411 | char **path; | |
1b64d026 | 2412 | struct stat st; |
ae7a7182 | 2413 | unsigned loaded_cnt, current_cnt; |
1b64d026 | 2414 | |
45fb0699 LP |
2415 | assert(u); |
2416 | ||
ac155bb8 | 2417 | if (u->fragment_path) { |
5f4b19f4 | 2418 | zero(st); |
ac155bb8 | 2419 | if (stat(u->fragment_path, &st) < 0) |
5f4b19f4 LP |
2420 | /* What, cannot access this anymore? */ |
2421 | return true; | |
45fb0699 | 2422 | |
ac155bb8 MS |
2423 | if (u->fragment_mtime > 0 && |
2424 | timespec_load(&st.st_mtim) != u->fragment_mtime) | |
5f4b19f4 LP |
2425 | return true; |
2426 | } | |
2427 | ||
1b64d026 LP |
2428 | if (u->source_path) { |
2429 | zero(st); | |
2430 | if (stat(u->source_path, &st) < 0) | |
2431 | return true; | |
2432 | ||
2433 | if (u->source_mtime > 0 && | |
2434 | timespec_load(&st.st_mtim) != u->source_mtime) | |
2435 | return true; | |
2436 | } | |
5f4b19f4 | 2437 | |
ae7a7182 OS |
2438 | t = unit_find_dropin_paths(u); |
2439 | loaded_cnt = strv_length(t); | |
2440 | current_cnt = strv_length(u->dropin_paths); | |
2441 | ||
2442 | if (loaded_cnt == current_cnt) { | |
2443 | if (loaded_cnt == 0) | |
2444 | return false; | |
2445 | ||
2446 | if (strv_overlap(u->dropin_paths, t)) { | |
2447 | STRV_FOREACH(path, u->dropin_paths) { | |
2448 | zero(st); | |
2449 | if (stat(*path, &st) < 0) | |
2450 | return true; | |
2451 | ||
2452 | if (u->dropin_mtime > 0 && | |
2453 | timespec_load(&st.st_mtim) > u->dropin_mtime) | |
2454 | return true; | |
2455 | } | |
2456 | ||
2457 | return false; | |
2458 | } else | |
2459 | return true; | |
2460 | } else | |
2461 | return true; | |
45fb0699 LP |
2462 | } |
2463 | ||
fdf20a31 | 2464 | void unit_reset_failed(Unit *u) { |
5632e374 LP |
2465 | assert(u); |
2466 | ||
fdf20a31 MM |
2467 | if (UNIT_VTABLE(u)->reset_failed) |
2468 | UNIT_VTABLE(u)->reset_failed(u); | |
5632e374 LP |
2469 | } |
2470 | ||
a7f241db LP |
2471 | Unit *unit_following(Unit *u) { |
2472 | assert(u); | |
2473 | ||
2474 | if (UNIT_VTABLE(u)->following) | |
2475 | return UNIT_VTABLE(u)->following(u); | |
2476 | ||
2477 | return NULL; | |
2478 | } | |
2479 | ||
31afa0a4 | 2480 | bool unit_stop_pending(Unit *u) { |
18ffdfda LP |
2481 | assert(u); |
2482 | ||
31afa0a4 LP |
2483 | /* This call does check the current state of the unit. It's |
2484 | * hence useful to be called from state change calls of the | |
2485 | * unit itself, where the state isn't updated yet. This is | |
2486 | * different from unit_inactive_or_pending() which checks both | |
2487 | * the current state and for a queued job. */ | |
18ffdfda | 2488 | |
31afa0a4 LP |
2489 | return u->job && u->job->type == JOB_STOP; |
2490 | } | |
2491 | ||
2492 | bool unit_inactive_or_pending(Unit *u) { | |
2493 | assert(u); | |
2494 | ||
2495 | /* Returns true if the unit is inactive or going down */ | |
18ffdfda | 2496 | |
d956ac29 LP |
2497 | if (UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))) |
2498 | return true; | |
2499 | ||
31afa0a4 | 2500 | if (unit_stop_pending(u)) |
18ffdfda LP |
2501 | return true; |
2502 | ||
2503 | return false; | |
2504 | } | |
2505 | ||
31afa0a4 | 2506 | bool unit_active_or_pending(Unit *u) { |
f976f3f6 LP |
2507 | assert(u); |
2508 | ||
f60c2665 | 2509 | /* Returns true if the unit is active or going up */ |
f976f3f6 LP |
2510 | |
2511 | if (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) | |
2512 | return true; | |
2513 | ||
ac155bb8 MS |
2514 | if (u->job && |
2515 | (u->job->type == JOB_START || | |
2516 | u->job->type == JOB_RELOAD_OR_START || | |
2517 | u->job->type == JOB_RESTART)) | |
f976f3f6 LP |
2518 | return true; |
2519 | ||
2520 | return false; | |
2521 | } | |
2522 | ||
718db961 | 2523 | int unit_kill(Unit *u, KillWho w, int signo, sd_bus_error *error) { |
8a0867d6 LP |
2524 | assert(u); |
2525 | assert(w >= 0 && w < _KILL_WHO_MAX); | |
8a0867d6 LP |
2526 | assert(signo > 0); |
2527 | assert(signo < _NSIG); | |
2528 | ||
8a0867d6 LP |
2529 | if (!UNIT_VTABLE(u)->kill) |
2530 | return -ENOTSUP; | |
2531 | ||
c74f17d9 | 2532 | return UNIT_VTABLE(u)->kill(u, w, signo, error); |
8a0867d6 LP |
2533 | } |
2534 | ||
82659fd7 LP |
2535 | static Set *unit_pid_set(pid_t main_pid, pid_t control_pid) { |
2536 | Set *pid_set; | |
2537 | int r; | |
2538 | ||
2539 | pid_set = set_new(trivial_hash_func, trivial_compare_func); | |
2540 | if (!pid_set) | |
2541 | return NULL; | |
2542 | ||
2543 | /* Exclude the main/control pids from being killed via the cgroup */ | |
2544 | if (main_pid > 0) { | |
2545 | r = set_put(pid_set, LONG_TO_PTR(main_pid)); | |
2546 | if (r < 0) | |
2547 | goto fail; | |
2548 | } | |
2549 | ||
2550 | if (control_pid > 0) { | |
2551 | r = set_put(pid_set, LONG_TO_PTR(control_pid)); | |
2552 | if (r < 0) | |
2553 | goto fail; | |
2554 | } | |
2555 | ||
2556 | return pid_set; | |
2557 | ||
2558 | fail: | |
2559 | set_free(pid_set); | |
2560 | return NULL; | |
2561 | } | |
2562 | ||
d91c34f2 LP |
2563 | int unit_kill_common( |
2564 | Unit *u, | |
2565 | KillWho who, | |
2566 | int signo, | |
2567 | pid_t main_pid, | |
2568 | pid_t control_pid, | |
718db961 | 2569 | sd_bus_error *error) { |
d91c34f2 | 2570 | |
814cc562 MS |
2571 | int r = 0; |
2572 | ||
2573 | if (who == KILL_MAIN && main_pid <= 0) { | |
2574 | if (main_pid < 0) | |
718db961 | 2575 | sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_PROCESS, "%s units have no main processes", unit_type_to_string(u->type)); |
814cc562 | 2576 | else |
718db961 | 2577 | sd_bus_error_set_const(error, BUS_ERROR_NO_SUCH_PROCESS, "No main process to kill"); |
814cc562 MS |
2578 | return -ESRCH; |
2579 | } | |
2580 | ||
2581 | if (who == KILL_CONTROL && control_pid <= 0) { | |
2582 | if (control_pid < 0) | |
718db961 | 2583 | sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_PROCESS, "%s units have no control processes", unit_type_to_string(u->type)); |
814cc562 | 2584 | else |
718db961 | 2585 | sd_bus_error_set_const(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill"); |
814cc562 MS |
2586 | return -ESRCH; |
2587 | } | |
2588 | ||
2589 | if (who == KILL_CONTROL || who == KILL_ALL) | |
2590 | if (control_pid > 0) | |
2591 | if (kill(control_pid, signo) < 0) | |
2592 | r = -errno; | |
2593 | ||
2594 | if (who == KILL_MAIN || who == KILL_ALL) | |
2595 | if (main_pid > 0) | |
2596 | if (kill(main_pid, signo) < 0) | |
2597 | r = -errno; | |
2598 | ||
4ad49000 | 2599 | if (who == KILL_ALL && u->cgroup_path) { |
814cc562 MS |
2600 | _cleanup_set_free_ Set *pid_set = NULL; |
2601 | int q; | |
2602 | ||
82659fd7 LP |
2603 | /* Exclude the main/control pids from being killed via the cgroup */ |
2604 | pid_set = unit_pid_set(main_pid, control_pid); | |
814cc562 MS |
2605 | if (!pid_set) |
2606 | return -ENOMEM; | |
2607 | ||
4ad49000 | 2608 | q = cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, signo, false, true, false, pid_set); |
814cc562 MS |
2609 | if (q < 0 && q != -EAGAIN && q != -ESRCH && q != -ENOENT) |
2610 | r = q; | |
2611 | } | |
2612 | ||
2613 | return r; | |
2614 | } | |
2615 | ||
6210e7fc LP |
2616 | int unit_following_set(Unit *u, Set **s) { |
2617 | assert(u); | |
2618 | assert(s); | |
2619 | ||
2620 | if (UNIT_VTABLE(u)->following_set) | |
2621 | return UNIT_VTABLE(u)->following_set(u, s); | |
2622 | ||
2623 | *s = NULL; | |
2624 | return 0; | |
2625 | } | |
2626 | ||
a4375746 LP |
2627 | UnitFileState unit_get_unit_file_state(Unit *u) { |
2628 | assert(u); | |
2629 | ||
ac155bb8 MS |
2630 | if (u->unit_file_state < 0 && u->fragment_path) |
2631 | u->unit_file_state = unit_file_get_state( | |
67445f4e | 2632 | u->manager->running_as == SYSTEMD_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER, |
2b6bf07d | 2633 | NULL, basename(u->fragment_path)); |
a4375746 | 2634 | |
ac155bb8 | 2635 | return u->unit_file_state; |
a4375746 LP |
2636 | } |
2637 | ||
57020a3a LP |
2638 | Unit* unit_ref_set(UnitRef *ref, Unit *u) { |
2639 | assert(ref); | |
2640 | assert(u); | |
2641 | ||
2642 | if (ref->unit) | |
2643 | unit_ref_unset(ref); | |
2644 | ||
2645 | ref->unit = u; | |
71fda00f | 2646 | LIST_PREPEND(refs, u->refs, ref); |
57020a3a LP |
2647 | return u; |
2648 | } | |
2649 | ||
2650 | void unit_ref_unset(UnitRef *ref) { | |
2651 | assert(ref); | |
2652 | ||
2653 | if (!ref->unit) | |
2654 | return; | |
2655 | ||
71fda00f | 2656 | LIST_REMOVE(refs, ref->unit->refs, ref); |
57020a3a LP |
2657 | ref->unit = NULL; |
2658 | } | |
2659 | ||
cba6e062 LP |
2660 | int unit_exec_context_defaults(Unit *u, ExecContext *c) { |
2661 | unsigned i; | |
2662 | int r; | |
2663 | ||
e06c73cc LP |
2664 | assert(u); |
2665 | assert(c); | |
2666 | ||
cba6e062 | 2667 | /* This only copies in the ones that need memory */ |
cba6e062 LP |
2668 | for (i = 0; i < RLIMIT_NLIMITS; i++) |
2669 | if (u->manager->rlimit[i] && !c->rlimit[i]) { | |
2670 | c->rlimit[i] = newdup(struct rlimit, u->manager->rlimit[i], 1); | |
2671 | if (!c->rlimit[i]) | |
2672 | return -ENOMEM; | |
2673 | } | |
2674 | ||
67445f4e | 2675 | if (u->manager->running_as == SYSTEMD_USER && |
cba6e062 | 2676 | !c->working_directory) { |
e06c73cc | 2677 | |
cba6e062 LP |
2678 | r = get_home_dir(&c->working_directory); |
2679 | if (r < 0) | |
2680 | return r; | |
2681 | } | |
2682 | ||
2683 | return 0; | |
e06c73cc LP |
2684 | } |
2685 | ||
3ef63c31 LP |
2686 | ExecContext *unit_get_exec_context(Unit *u) { |
2687 | size_t offset; | |
2688 | assert(u); | |
2689 | ||
2690 | offset = UNIT_VTABLE(u)->exec_context_offset; | |
2691 | if (offset <= 0) | |
2692 | return NULL; | |
2693 | ||
2694 | return (ExecContext*) ((uint8_t*) u + offset); | |
2695 | } | |
2696 | ||
718db961 LP |
2697 | KillContext *unit_get_kill_context(Unit *u) { |
2698 | size_t offset; | |
2699 | assert(u); | |
2700 | ||
2701 | offset = UNIT_VTABLE(u)->kill_context_offset; | |
2702 | if (offset <= 0) | |
2703 | return NULL; | |
2704 | ||
2705 | return (KillContext*) ((uint8_t*) u + offset); | |
2706 | } | |
2707 | ||
4ad49000 LP |
2708 | CGroupContext *unit_get_cgroup_context(Unit *u) { |
2709 | size_t offset; | |
2710 | ||
2711 | offset = UNIT_VTABLE(u)->cgroup_context_offset; | |
2712 | if (offset <= 0) | |
2713 | return NULL; | |
2714 | ||
2715 | return (CGroupContext*) ((uint8_t*) u + offset); | |
2716 | } | |
2717 | ||
613b411c LP |
2718 | ExecRuntime *unit_get_exec_runtime(Unit *u) { |
2719 | size_t offset; | |
2720 | ||
2721 | offset = UNIT_VTABLE(u)->exec_runtime_offset; | |
2722 | if (offset <= 0) | |
2723 | return NULL; | |
2724 | ||
2725 | return *(ExecRuntime**) ((uint8_t*) u + offset); | |
2726 | } | |
2727 | ||
8e2af478 | 2728 | static int drop_in_file(Unit *u, UnitSetPropertiesMode mode, const char *name, char **_p, char **_q) { |
b9ec9359 | 2729 | _cleanup_free_ char *b = NULL; |
26d04f86 LP |
2730 | char *p, *q; |
2731 | int r; | |
2732 | ||
71645aca | 2733 | assert(u); |
26d04f86 LP |
2734 | assert(name); |
2735 | assert(_p); | |
2736 | assert(_q); | |
8e2af478 | 2737 | assert(mode & (UNIT_PERSISTENT|UNIT_RUNTIME)); |
71645aca | 2738 | |
b9ec9359 LP |
2739 | b = xescape(name, "/."); |
2740 | if (!b) | |
2741 | return -ENOMEM; | |
2742 | ||
2743 | if (!filename_is_safe(b)) | |
71645aca LP |
2744 | return -EINVAL; |
2745 | ||
26d04f86 LP |
2746 | if (u->manager->running_as == SYSTEMD_USER) { |
2747 | _cleanup_free_ char *c = NULL; | |
2748 | ||
2749 | r = user_config_home(&c); | |
2750 | if (r < 0) | |
2751 | return r; | |
2752 | if (r == 0) | |
2753 | return -ENOENT; | |
2754 | ||
2755 | p = strjoin(c, "/", u->id, ".d", NULL); | |
c2756a68 | 2756 | } else if (mode & UNIT_PERSISTENT) |
26d04f86 | 2757 | p = strjoin("/etc/systemd/system/", u->id, ".d", NULL); |
8e2af478 LP |
2758 | else |
2759 | p = strjoin("/run/systemd/system/", u->id, ".d", NULL); | |
71645aca LP |
2760 | if (!p) |
2761 | return -ENOMEM; | |
2762 | ||
b9ec9359 | 2763 | q = strjoin(p, "/90-", b, ".conf", NULL); |
26d04f86 LP |
2764 | if (!q) { |
2765 | free(p); | |
71645aca | 2766 | return -ENOMEM; |
26d04f86 | 2767 | } |
71645aca | 2768 | |
26d04f86 LP |
2769 | *_p = p; |
2770 | *_q = q; | |
2771 | return 0; | |
71645aca LP |
2772 | } |
2773 | ||
8e2af478 | 2774 | int unit_write_drop_in(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data) { |
71645aca | 2775 | _cleanup_free_ char *p = NULL, *q = NULL; |
26d04f86 | 2776 | int r; |
71645aca LP |
2777 | |
2778 | assert(u); | |
b42defe3 LP |
2779 | assert(name); |
2780 | assert(data); | |
71645aca | 2781 | |
8e2af478 LP |
2782 | if (!(mode & (UNIT_PERSISTENT|UNIT_RUNTIME))) |
2783 | return 0; | |
2784 | ||
2785 | r = drop_in_file(u, mode, name, &p, &q); | |
26d04f86 LP |
2786 | if (r < 0) |
2787 | return r; | |
71645aca | 2788 | |
26d04f86 | 2789 | mkdir_p(p, 0755); |
574d5f2d | 2790 | return write_string_file_atomic_label(q, data); |
26d04f86 | 2791 | } |
71645aca | 2792 | |
b9ec9359 LP |
2793 | int unit_write_drop_in_format(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *format, ...) { |
2794 | _cleanup_free_ char *p = NULL; | |
2795 | va_list ap; | |
2796 | int r; | |
2797 | ||
2798 | assert(u); | |
2799 | assert(name); | |
2800 | assert(format); | |
2801 | ||
2802 | if (!(mode & (UNIT_PERSISTENT|UNIT_RUNTIME))) | |
2803 | return 0; | |
2804 | ||
2805 | va_start(ap, format); | |
2806 | r = vasprintf(&p, format, ap); | |
2807 | va_end(ap); | |
2808 | ||
2809 | if (r < 0) | |
2810 | return -ENOMEM; | |
2811 | ||
2812 | return unit_write_drop_in(u, mode, name, p); | |
2813 | } | |
2814 | ||
2815 | int unit_write_drop_in_private(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data) { | |
b42defe3 LP |
2816 | _cleanup_free_ char *ndata = NULL; |
2817 | ||
2818 | assert(u); | |
2819 | assert(name); | |
2820 | assert(data); | |
2821 | ||
2822 | if (!UNIT_VTABLE(u)->private_section) | |
2823 | return -EINVAL; | |
2824 | ||
b9ec9359 LP |
2825 | if (!(mode & (UNIT_PERSISTENT|UNIT_RUNTIME))) |
2826 | return 0; | |
2827 | ||
b42defe3 LP |
2828 | ndata = strjoin("[", UNIT_VTABLE(u)->private_section, "]\n", data, NULL); |
2829 | if (!ndata) | |
2830 | return -ENOMEM; | |
2831 | ||
2832 | return unit_write_drop_in(u, mode, name, ndata); | |
2833 | } | |
2834 | ||
b9ec9359 LP |
2835 | int unit_write_drop_in_private_format(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *format, ...) { |
2836 | _cleanup_free_ char *p = NULL; | |
2837 | va_list ap; | |
2838 | int r; | |
2839 | ||
2840 | assert(u); | |
2841 | assert(name); | |
2842 | assert(format); | |
2843 | ||
2844 | if (!(mode & (UNIT_PERSISTENT|UNIT_RUNTIME))) | |
2845 | return 0; | |
2846 | ||
2847 | va_start(ap, format); | |
2848 | r = vasprintf(&p, format, ap); | |
2849 | va_end(ap); | |
2850 | ||
2851 | if (r < 0) | |
2852 | return -ENOMEM; | |
2853 | ||
2854 | return unit_write_drop_in_private(u, mode, name, p); | |
2855 | } | |
2856 | ||
8e2af478 | 2857 | int unit_remove_drop_in(Unit *u, UnitSetPropertiesMode mode, const char *name) { |
26d04f86 LP |
2858 | _cleanup_free_ char *p = NULL, *q = NULL; |
2859 | int r; | |
71645aca | 2860 | |
26d04f86 | 2861 | assert(u); |
71645aca | 2862 | |
8e2af478 LP |
2863 | if (!(mode & (UNIT_PERSISTENT|UNIT_RUNTIME))) |
2864 | return 0; | |
2865 | ||
2866 | r = drop_in_file(u, mode, name, &p, &q); | |
6891529f ZJS |
2867 | if (r < 0) |
2868 | return r; | |
2869 | ||
71645aca | 2870 | if (unlink(q) < 0) |
241da328 | 2871 | r = errno == ENOENT ? 0 : -errno; |
26d04f86 | 2872 | else |
241da328 | 2873 | r = 1; |
71645aca LP |
2874 | |
2875 | rmdir(p); | |
26d04f86 | 2876 | return r; |
71645aca LP |
2877 | } |
2878 | ||
c2756a68 LP |
2879 | int unit_make_transient(Unit *u) { |
2880 | int r; | |
2881 | ||
2882 | assert(u); | |
2883 | ||
2884 | u->load_state = UNIT_STUB; | |
2885 | u->load_error = 0; | |
2886 | u->transient = true; | |
2887 | ||
2888 | free(u->fragment_path); | |
2889 | u->fragment_path = NULL; | |
2890 | ||
2891 | if (u->manager->running_as == SYSTEMD_USER) { | |
2892 | _cleanup_free_ char *c = NULL; | |
2893 | ||
2894 | r = user_config_home(&c); | |
2895 | if (r < 0) | |
2896 | return r; | |
2897 | if (r == 0) | |
2898 | return -ENOENT; | |
2899 | ||
2900 | u->fragment_path = strjoin(c, "/", u->id, NULL); | |
2901 | if (!u->fragment_path) | |
2902 | return -ENOMEM; | |
2903 | ||
2904 | mkdir_p(c, 0755); | |
2905 | } else { | |
2906 | u->fragment_path = strappend("/run/systemd/system/", u->id); | |
2907 | if (!u->fragment_path) | |
2908 | return -ENOMEM; | |
2909 | ||
2910 | mkdir_p("/run/systemd/system", 0755); | |
2911 | } | |
2912 | ||
2913 | return write_string_file_atomic_label(u->fragment_path, "# Transient stub"); | |
2914 | } | |
2915 | ||
cd2086fe LP |
2916 | int unit_kill_context( |
2917 | Unit *u, | |
2918 | KillContext *c, | |
2919 | bool sigkill, | |
2920 | pid_t main_pid, | |
2921 | pid_t control_pid, | |
2922 | bool main_pid_alien) { | |
2923 | ||
2924 | int sig, wait_for_exit = 0, r; | |
2925 | ||
2926 | assert(u); | |
2927 | assert(c); | |
2928 | ||
2929 | if (c->kill_mode == KILL_NONE) | |
2930 | return 0; | |
2931 | ||
2932 | sig = sigkill ? SIGKILL : c->kill_signal; | |
2933 | ||
2934 | if (main_pid > 0) { | |
2935 | r = kill_and_sigcont(main_pid, sig); | |
2936 | ||
2937 | if (r < 0 && r != -ESRCH) { | |
2938 | _cleanup_free_ char *comm = NULL; | |
2939 | get_process_comm(main_pid, &comm); | |
2940 | ||
2941 | log_warning_unit(u->id, "Failed to kill main process %li (%s): %s", | |
2942 | (long) main_pid, strna(comm), strerror(-r)); | |
82659fd7 | 2943 | } else { |
cd2086fe | 2944 | wait_for_exit = !main_pid_alien; |
82659fd7 LP |
2945 | |
2946 | if (c->send_sighup) | |
2947 | kill(main_pid, SIGHUP); | |
2948 | } | |
cd2086fe LP |
2949 | } |
2950 | ||
2951 | if (control_pid > 0) { | |
2952 | r = kill_and_sigcont(control_pid, sig); | |
2953 | ||
2954 | if (r < 0 && r != -ESRCH) { | |
2955 | _cleanup_free_ char *comm = NULL; | |
2956 | get_process_comm(control_pid, &comm); | |
2957 | ||
2958 | log_warning_unit(u->id, | |
2959 | "Failed to kill control process %li (%s): %s", | |
2960 | (long) control_pid, strna(comm), strerror(-r)); | |
82659fd7 | 2961 | } else { |
cd2086fe | 2962 | wait_for_exit = true; |
82659fd7 LP |
2963 | |
2964 | if (c->send_sighup) | |
2965 | kill(control_pid, SIGHUP); | |
2966 | } | |
cd2086fe LP |
2967 | } |
2968 | ||
4ad49000 | 2969 | if (c->kill_mode == KILL_CONTROL_GROUP && u->cgroup_path) { |
cd2086fe LP |
2970 | _cleanup_set_free_ Set *pid_set = NULL; |
2971 | ||
82659fd7 LP |
2972 | /* Exclude the main/control pids from being killed via the cgroup */ |
2973 | pid_set = unit_pid_set(main_pid, control_pid); | |
cd2086fe LP |
2974 | if (!pid_set) |
2975 | return -ENOMEM; | |
2976 | ||
4ad49000 | 2977 | r = cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, sig, true, true, false, pid_set); |
cd2086fe LP |
2978 | if (r < 0) { |
2979 | if (r != -EAGAIN && r != -ESRCH && r != -ENOENT) | |
2980 | log_warning_unit(u->id, "Failed to kill control group: %s", strerror(-r)); | |
82659fd7 | 2981 | } else if (r > 0) { |
cd2086fe | 2982 | wait_for_exit = true; |
82659fd7 LP |
2983 | if (c->send_sighup) { |
2984 | set_free(pid_set); | |
2985 | ||
2986 | pid_set = unit_pid_set(main_pid, control_pid); | |
2987 | if (!pid_set) | |
2988 | return -ENOMEM; | |
2989 | ||
2990 | cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, SIGHUP, true, true, false, pid_set); | |
2991 | } | |
2992 | } | |
cd2086fe LP |
2993 | } |
2994 | ||
2995 | return wait_for_exit; | |
2996 | } | |
2997 | ||
a57f7e2c LP |
2998 | int unit_require_mounts_for(Unit *u, const char *path) { |
2999 | char prefix[strlen(path) + 1], *p; | |
3000 | int r; | |
3001 | ||
3002 | assert(u); | |
3003 | assert(path); | |
3004 | ||
3005 | /* Registers a unit for requiring a certain path and all its | |
3006 | * prefixes. We keep a simple array of these paths in the | |
3007 | * unit, since its usually short. However, we build a prefix | |
3008 | * table for all possible prefixes so that new appearing mount | |
3009 | * units can easily determine which units to make themselves a | |
3010 | * dependency of. */ | |
3011 | ||
70b64bd3 ZJS |
3012 | if (!path_is_absolute(path)) |
3013 | return -EINVAL; | |
3014 | ||
a57f7e2c LP |
3015 | p = strdup(path); |
3016 | if (!p) | |
3017 | return -ENOMEM; | |
3018 | ||
3019 | path_kill_slashes(p); | |
3020 | ||
a57f7e2c LP |
3021 | if (!path_is_safe(p)) { |
3022 | free(p); | |
3023 | return -EPERM; | |
3024 | } | |
3025 | ||
3026 | if (strv_contains(u->requires_mounts_for, p)) { | |
3027 | free(p); | |
3028 | return 0; | |
3029 | } | |
3030 | ||
3031 | r = strv_push(&u->requires_mounts_for, p); | |
3032 | if (r < 0) { | |
3033 | free(p); | |
3034 | return r; | |
3035 | } | |
3036 | ||
3037 | PATH_FOREACH_PREFIX_MORE(prefix, p) { | |
3038 | Set *x; | |
3039 | ||
3040 | x = hashmap_get(u->manager->units_requiring_mounts_for, prefix); | |
3041 | if (!x) { | |
3042 | char *q; | |
3043 | ||
3044 | if (!u->manager->units_requiring_mounts_for) { | |
3045 | u->manager->units_requiring_mounts_for = hashmap_new(string_hash_func, string_compare_func); | |
3046 | if (!u->manager->units_requiring_mounts_for) | |
3047 | return -ENOMEM; | |
3048 | } | |
3049 | ||
3050 | q = strdup(prefix); | |
3051 | if (!q) | |
3052 | return -ENOMEM; | |
3053 | ||
3054 | x = set_new(NULL, NULL); | |
3055 | if (!x) { | |
3056 | free(q); | |
3057 | return -ENOMEM; | |
3058 | } | |
3059 | ||
3060 | r = hashmap_put(u->manager->units_requiring_mounts_for, q, x); | |
3061 | if (r < 0) { | |
3062 | free(q); | |
3063 | set_free(x); | |
3064 | return r; | |
3065 | } | |
3066 | } | |
3067 | ||
3068 | r = set_put(x, u); | |
3069 | if (r < 0) | |
3070 | return r; | |
3071 | } | |
3072 | ||
3073 | return 0; | |
3074 | } | |
3075 | ||
613b411c LP |
3076 | int unit_setup_exec_runtime(Unit *u) { |
3077 | ExecRuntime **rt; | |
3078 | size_t offset; | |
3079 | Iterator i; | |
3080 | Unit *other; | |
3081 | ||
3082 | offset = UNIT_VTABLE(u)->exec_runtime_offset; | |
3083 | assert(offset > 0); | |
3084 | ||
3085 | /* Check if ther already is an ExecRuntime for this unit? */ | |
3086 | rt = (ExecRuntime**) ((uint8_t*) u + offset); | |
3087 | if (*rt) | |
3088 | return 0; | |
3089 | ||
3090 | /* Try to get it from somebody else */ | |
3091 | SET_FOREACH(other, u->dependencies[UNIT_JOINS_NAMESPACE_OF], i) { | |
3092 | ||
3093 | *rt = unit_get_exec_runtime(other); | |
3094 | if (*rt) { | |
3095 | exec_runtime_ref(*rt); | |
3096 | return 0; | |
3097 | } | |
3098 | } | |
3099 | ||
3100 | return exec_runtime_make(rt, unit_get_exec_context(u), u->id); | |
3101 | } | |
3102 | ||
94f04347 LP |
3103 | static const char* const unit_active_state_table[_UNIT_ACTIVE_STATE_MAX] = { |
3104 | [UNIT_ACTIVE] = "active", | |
032ff4af | 3105 | [UNIT_RELOADING] = "reloading", |
94f04347 | 3106 | [UNIT_INACTIVE] = "inactive", |
fdf20a31 | 3107 | [UNIT_FAILED] = "failed", |
94f04347 LP |
3108 | [UNIT_ACTIVATING] = "activating", |
3109 | [UNIT_DEACTIVATING] = "deactivating" | |
3110 | }; | |
3111 | ||
3112 | DEFINE_STRING_TABLE_LOOKUP(unit_active_state, UnitActiveState); | |
3113 | ||
3114 | static const char* const unit_dependency_table[_UNIT_DEPENDENCY_MAX] = { | |
3115 | [UNIT_REQUIRES] = "Requires", | |
9e2f7c11 | 3116 | [UNIT_REQUIRES_OVERRIDABLE] = "RequiresOverridable", |
94f04347 | 3117 | [UNIT_REQUISITE] = "Requisite", |
9e2f7c11 | 3118 | [UNIT_REQUISITE_OVERRIDABLE] = "RequisiteOverridable", |
ac6a4abe MS |
3119 | [UNIT_WANTS] = "Wants", |
3120 | [UNIT_BINDS_TO] = "BindsTo", | |
3121 | [UNIT_PART_OF] = "PartOf", | |
94f04347 | 3122 | [UNIT_REQUIRED_BY] = "RequiredBy", |
9e2f7c11 | 3123 | [UNIT_REQUIRED_BY_OVERRIDABLE] = "RequiredByOverridable", |
94f04347 | 3124 | [UNIT_WANTED_BY] = "WantedBy", |
ac6a4abe MS |
3125 | [UNIT_BOUND_BY] = "BoundBy", |
3126 | [UNIT_CONSISTS_OF] = "ConsistsOf", | |
94f04347 | 3127 | [UNIT_CONFLICTS] = "Conflicts", |
69dd2852 | 3128 | [UNIT_CONFLICTED_BY] = "ConflictedBy", |
94f04347 LP |
3129 | [UNIT_BEFORE] = "Before", |
3130 | [UNIT_AFTER] = "After", | |
57020a3a LP |
3131 | [UNIT_ON_FAILURE] = "OnFailure", |
3132 | [UNIT_TRIGGERS] = "Triggers", | |
4dcc1cb4 | 3133 | [UNIT_TRIGGERED_BY] = "TriggeredBy", |
7f2cddae | 3134 | [UNIT_PROPAGATES_RELOAD_TO] = "PropagatesReloadTo", |
ac6a4abe MS |
3135 | [UNIT_RELOAD_PROPAGATED_FROM] = "ReloadPropagatedFrom", |
3136 | [UNIT_REFERENCES] = "References", | |
3137 | [UNIT_REFERENCED_BY] = "ReferencedBy", | |
613b411c | 3138 | [UNIT_JOINS_NAMESPACE_OF] = "JoinsNamespaceOf", |
94f04347 LP |
3139 | }; |
3140 | ||
3141 | DEFINE_STRING_TABLE_LOOKUP(unit_dependency, UnitDependency); |