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Commit | Line | Data |
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a7334b09 LP |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2010 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
7 | under the terms of the GNU Lesser General Public License as published by |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
9 | (at your option) any later version. |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 14 | Lesser General Public License for more details. |
a7334b09 | 15 | |
5430f7f2 | 16 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
18 | ***/ | |
19 | ||
87f0e418 | 20 | #include <errno.h> |
0301abf4 | 21 | #include <stdlib.h> |
4f5dd394 | 22 | #include <string.h> |
45fb0699 | 23 | #include <sys/stat.h> |
4f5dd394 | 24 | #include <unistd.h> |
87f0e418 | 25 | |
718db961 LP |
26 | #include "sd-id128.h" |
27 | #include "sd-messages.h" | |
4f5dd394 | 28 | |
b5efdb8a | 29 | #include "alloc-util.h" |
4f5dd394 LP |
30 | #include "bus-common-errors.h" |
31 | #include "bus-util.h" | |
c6c18be3 | 32 | #include "cgroup-util.h" |
4f5dd394 LP |
33 | #include "dbus-unit.h" |
34 | #include "dbus.h" | |
35 | #include "dropin.h" | |
36 | #include "escape.h" | |
37 | #include "execute.h" | |
a5c32cff | 38 | #include "fileio-label.h" |
f97b34a6 | 39 | #include "format-util.h" |
4b58153d | 40 | #include "id128-util.h" |
4f5dd394 LP |
41 | #include "load-dropin.h" |
42 | #include "load-fragment.h" | |
43 | #include "log.h" | |
44 | #include "macro.h" | |
45 | #include "missing.h" | |
46 | #include "mkdir.h" | |
6bedfcbb | 47 | #include "parse-util.h" |
4f5dd394 | 48 | #include "path-util.h" |
0b452006 | 49 | #include "process-util.h" |
4f5dd394 | 50 | #include "set.h" |
6eb7c172 | 51 | #include "signal-util.h" |
e9db43d5 | 52 | #include "special.h" |
8fcde012 | 53 | #include "stat-util.h" |
d054f0a4 | 54 | #include "stdio-util.h" |
07630cea | 55 | #include "string-util.h" |
4f5dd394 | 56 | #include "strv.h" |
4f4afc88 | 57 | #include "umask-util.h" |
4f5dd394 | 58 | #include "unit-name.h" |
e9db43d5 | 59 | #include "unit.h" |
b1d4f8e1 LP |
60 | #include "user-util.h" |
61 | #include "virt.h" | |
87f0e418 LP |
62 | |
63 | const UnitVTable * const unit_vtable[_UNIT_TYPE_MAX] = { | |
64 | [UNIT_SERVICE] = &service_vtable, | |
87f0e418 LP |
65 | [UNIT_SOCKET] = &socket_vtable, |
66 | [UNIT_TARGET] = &target_vtable, | |
67 | [UNIT_DEVICE] = &device_vtable, | |
68 | [UNIT_MOUNT] = &mount_vtable, | |
69 | [UNIT_AUTOMOUNT] = &automount_vtable, | |
01f78473 | 70 | [UNIT_SWAP] = &swap_vtable, |
e821075a | 71 | [UNIT_TIMER] = &timer_vtable, |
a016b922 | 72 | [UNIT_PATH] = &path_vtable, |
6c12b52e LP |
73 | [UNIT_SLICE] = &slice_vtable, |
74 | [UNIT_SCOPE] = &scope_vtable | |
87f0e418 LP |
75 | }; |
76 | ||
f2341e0a | 77 | static void maybe_warn_about_dependency(Unit *u, const char *other, UnitDependency dependency); |
d1fab3fe | 78 | |
7d17cfbc | 79 | Unit *unit_new(Manager *m, size_t size) { |
87f0e418 LP |
80 | Unit *u; |
81 | ||
82 | assert(m); | |
ac155bb8 | 83 | assert(size >= sizeof(Unit)); |
87f0e418 | 84 | |
7d17cfbc MS |
85 | u = malloc0(size); |
86 | if (!u) | |
87f0e418 LP |
87 | return NULL; |
88 | ||
d5099efc | 89 | u->names = set_new(&string_hash_ops); |
6b430fdb ZJS |
90 | if (!u->names) |
91 | return mfree(u); | |
87f0e418 | 92 | |
ac155bb8 MS |
93 | u->manager = m; |
94 | u->type = _UNIT_TYPE_INVALID; | |
ac155bb8 MS |
95 | u->default_dependencies = true; |
96 | u->unit_file_state = _UNIT_FILE_STATE_INVALID; | |
d2dc52db | 97 | u->unit_file_preset = -1; |
d420282b | 98 | u->on_failure_job_mode = JOB_REPLACE; |
efdb0237 | 99 | u->cgroup_inotify_wd = -1; |
36c16a7c | 100 | u->job_timeout = USEC_INFINITY; |
a2df3ea4 | 101 | u->job_running_timeout = USEC_INFINITY; |
00d9ef85 LP |
102 | u->ref_uid = UID_INVALID; |
103 | u->ref_gid = GID_INVALID; | |
fe700f46 | 104 | u->cpu_usage_last = NSEC_INFINITY; |
87f0e418 | 105 | |
6bf0f408 | 106 | RATELIMIT_INIT(u->start_limit, m->default_start_limit_interval, m->default_start_limit_burst); |
67bfdc97 | 107 | RATELIMIT_INIT(u->auto_stop_ratelimit, 10 * USEC_PER_SEC, 16); |
bea355da | 108 | |
87f0e418 LP |
109 | return u; |
110 | } | |
111 | ||
a581e45a LP |
112 | int unit_new_for_name(Manager *m, size_t size, const char *name, Unit **ret) { |
113 | Unit *u; | |
114 | int r; | |
115 | ||
116 | u = unit_new(m, size); | |
117 | if (!u) | |
118 | return -ENOMEM; | |
119 | ||
120 | r = unit_add_name(u, name); | |
121 | if (r < 0) { | |
122 | unit_free(u); | |
123 | return r; | |
124 | } | |
125 | ||
126 | *ret = u; | |
127 | return r; | |
128 | } | |
129 | ||
f278026d LP |
130 | bool unit_has_name(Unit *u, const char *name) { |
131 | assert(u); | |
132 | assert(name); | |
133 | ||
390bc2b1 | 134 | return set_contains(u->names, (char*) name); |
f278026d LP |
135 | } |
136 | ||
598459ce LP |
137 | static void unit_init(Unit *u) { |
138 | CGroupContext *cc; | |
139 | ExecContext *ec; | |
140 | KillContext *kc; | |
141 | ||
142 | assert(u); | |
143 | assert(u->manager); | |
144 | assert(u->type >= 0); | |
145 | ||
146 | cc = unit_get_cgroup_context(u); | |
147 | if (cc) { | |
148 | cgroup_context_init(cc); | |
149 | ||
150 | /* Copy in the manager defaults into the cgroup | |
151 | * context, _before_ the rest of the settings have | |
152 | * been initialized */ | |
153 | ||
154 | cc->cpu_accounting = u->manager->default_cpu_accounting; | |
13c31542 | 155 | cc->io_accounting = u->manager->default_io_accounting; |
598459ce LP |
156 | cc->blockio_accounting = u->manager->default_blockio_accounting; |
157 | cc->memory_accounting = u->manager->default_memory_accounting; | |
03a7b521 | 158 | cc->tasks_accounting = u->manager->default_tasks_accounting; |
0af20ea2 LP |
159 | |
160 | if (u->type != UNIT_SLICE) | |
161 | cc->tasks_max = u->manager->default_tasks_max; | |
598459ce LP |
162 | } |
163 | ||
164 | ec = unit_get_exec_context(u); | |
b1edf445 | 165 | if (ec) { |
598459ce LP |
166 | exec_context_init(ec); |
167 | ||
b1edf445 LP |
168 | ec->keyring_mode = MANAGER_IS_SYSTEM(u->manager) ? |
169 | EXEC_KEYRING_PRIVATE : EXEC_KEYRING_INHERIT; | |
170 | } | |
171 | ||
598459ce LP |
172 | kc = unit_get_kill_context(u); |
173 | if (kc) | |
174 | kill_context_init(kc); | |
175 | ||
176 | if (UNIT_VTABLE(u)->init) | |
177 | UNIT_VTABLE(u)->init(u); | |
178 | } | |
179 | ||
87f0e418 | 180 | int unit_add_name(Unit *u, const char *text) { |
598459ce | 181 | _cleanup_free_ char *s = NULL, *i = NULL; |
87f0e418 | 182 | UnitType t; |
87f0e418 LP |
183 | int r; |
184 | ||
185 | assert(u); | |
186 | assert(text); | |
187 | ||
7410616c | 188 | if (unit_name_is_valid(text, UNIT_NAME_TEMPLATE)) { |
598459ce | 189 | |
ac155bb8 | 190 | if (!u->instance) |
9e2f7c11 | 191 | return -EINVAL; |
87f0e418 | 192 | |
7410616c LP |
193 | r = unit_name_replace_instance(text, u->instance, &s); |
194 | if (r < 0) | |
195 | return r; | |
196 | } else { | |
9e2f7c11 | 197 | s = strdup(text); |
7410616c LP |
198 | if (!s) |
199 | return -ENOMEM; | |
200 | } | |
87f0e418 | 201 | |
7410616c LP |
202 | if (set_contains(u->names, s)) |
203 | return 0; | |
204 | if (hashmap_contains(u->manager->units, s)) | |
205 | return -EEXIST; | |
206 | ||
207 | if (!unit_name_is_valid(s, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) | |
598459ce | 208 | return -EINVAL; |
e537352b | 209 | |
7410616c LP |
210 | t = unit_name_to_type(s); |
211 | if (t < 0) | |
212 | return -EINVAL; | |
87f0e418 | 213 | |
598459ce LP |
214 | if (u->type != _UNIT_TYPE_INVALID && t != u->type) |
215 | return -EINVAL; | |
87f0e418 | 216 | |
e48614c4 ZJS |
217 | r = unit_name_to_instance(s, &i); |
218 | if (r < 0) | |
598459ce | 219 | return r; |
87f0e418 | 220 | |
ce99c68a | 221 | if (i && !unit_type_may_template(t)) |
598459ce | 222 | return -EINVAL; |
9e2f7c11 | 223 | |
276c3e78 | 224 | /* Ensure that this unit is either instanced or not instanced, |
7410616c LP |
225 | * but not both. Note that we do allow names with different |
226 | * instance names however! */ | |
598459ce LP |
227 | if (u->type != _UNIT_TYPE_INVALID && !u->instance != !i) |
228 | return -EINVAL; | |
9e2f7c11 | 229 | |
8a993b61 | 230 | if (!unit_type_may_alias(t) && !set_isempty(u->names)) |
598459ce | 231 | return -EEXIST; |
9e2f7c11 | 232 | |
598459ce LP |
233 | if (hashmap_size(u->manager->units) >= MANAGER_MAX_NAMES) |
234 | return -E2BIG; | |
4f0f902f | 235 | |
e48614c4 | 236 | r = set_put(u->names, s); |
7410616c | 237 | if (r < 0) |
598459ce | 238 | return r; |
7410616c | 239 | assert(r > 0); |
87f0e418 | 240 | |
e48614c4 ZJS |
241 | r = hashmap_put(u->manager->units, s, u); |
242 | if (r < 0) { | |
7410616c | 243 | (void) set_remove(u->names, s); |
598459ce | 244 | return r; |
87f0e418 LP |
245 | } |
246 | ||
ac155bb8 | 247 | if (u->type == _UNIT_TYPE_INVALID) { |
ac155bb8 MS |
248 | u->type = t; |
249 | u->id = s; | |
250 | u->instance = i; | |
9e2f7c11 | 251 | |
71fda00f | 252 | LIST_PREPEND(units_by_type, u->manager->units_by_type[t], u); |
e537352b | 253 | |
598459ce | 254 | unit_init(u); |
87f0e418 | 255 | |
598459ce LP |
256 | i = NULL; |
257 | } | |
9e2f7c11 | 258 | |
598459ce | 259 | s = NULL; |
9e2f7c11 | 260 | |
598459ce LP |
261 | unit_add_to_dbus_queue(u); |
262 | return 0; | |
87f0e418 LP |
263 | } |
264 | ||
0ae97ec1 | 265 | int unit_choose_id(Unit *u, const char *name) { |
68eda4bd | 266 | _cleanup_free_ char *t = NULL; |
598459ce | 267 | char *s, *i; |
276c3e78 | 268 | int r; |
0ae97ec1 LP |
269 | |
270 | assert(u); | |
271 | assert(name); | |
272 | ||
7410616c | 273 | if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) { |
9e2f7c11 | 274 | |
ac155bb8 | 275 | if (!u->instance) |
9e2f7c11 LP |
276 | return -EINVAL; |
277 | ||
7410616c LP |
278 | r = unit_name_replace_instance(name, u->instance, &t); |
279 | if (r < 0) | |
280 | return r; | |
9e2f7c11 LP |
281 | |
282 | name = t; | |
283 | } | |
284 | ||
0ae97ec1 | 285 | /* Selects one of the names of this unit as the id */ |
ac155bb8 | 286 | s = set_get(u->names, (char*) name); |
9e2f7c11 | 287 | if (!s) |
0ae97ec1 LP |
288 | return -ENOENT; |
289 | ||
7410616c | 290 | /* Determine the new instance from the new id */ |
e48614c4 ZJS |
291 | r = unit_name_to_instance(s, &i); |
292 | if (r < 0) | |
276c3e78 LP |
293 | return r; |
294 | ||
ac155bb8 | 295 | u->id = s; |
276c3e78 | 296 | |
ac155bb8 MS |
297 | free(u->instance); |
298 | u->instance = i; | |
276c3e78 | 299 | |
c1e1601e | 300 | unit_add_to_dbus_queue(u); |
9e2f7c11 | 301 | |
0ae97ec1 LP |
302 | return 0; |
303 | } | |
304 | ||
f50e0a01 LP |
305 | int unit_set_description(Unit *u, const char *description) { |
306 | char *s; | |
307 | ||
308 | assert(u); | |
309 | ||
8aec412f LP |
310 | if (isempty(description)) |
311 | s = NULL; | |
312 | else { | |
313 | s = strdup(description); | |
314 | if (!s) | |
315 | return -ENOMEM; | |
316 | } | |
f50e0a01 | 317 | |
ac155bb8 MS |
318 | free(u->description); |
319 | u->description = s; | |
c1e1601e LP |
320 | |
321 | unit_add_to_dbus_queue(u); | |
f50e0a01 LP |
322 | return 0; |
323 | } | |
324 | ||
701cc384 | 325 | bool unit_check_gc(Unit *u) { |
a354329f | 326 | UnitActiveState state; |
f0bfbfac | 327 | bool inactive; |
701cc384 LP |
328 | assert(u); |
329 | ||
a354329f | 330 | if (u->job) |
701cc384 LP |
331 | return true; |
332 | ||
a354329f | 333 | if (u->nop_job) |
6c073082 LP |
334 | return true; |
335 | ||
a354329f | 336 | state = unit_active_state(u); |
f0bfbfac | 337 | inactive = state == UNIT_INACTIVE; |
a354329f LP |
338 | |
339 | /* If the unit is inactive and failed and no job is queued for | |
340 | * it, then release its runtime resources */ | |
341 | if (UNIT_IS_INACTIVE_OR_FAILED(state) && | |
342 | UNIT_VTABLE(u)->release_resources) | |
f0bfbfac | 343 | UNIT_VTABLE(u)->release_resources(u, inactive); |
a354329f LP |
344 | |
345 | /* But we keep the unit object around for longer when it is | |
346 | * referenced or configured to not be gc'ed */ | |
f0bfbfac | 347 | if (!inactive) |
701cc384 LP |
348 | return true; |
349 | ||
f5869324 | 350 | if (u->perpetual) |
701cc384 LP |
351 | return true; |
352 | ||
9d576438 LP |
353 | if (u->refs) |
354 | return true; | |
355 | ||
05a98afd LP |
356 | if (sd_bus_track_count(u->bus_track) > 0) |
357 | return true; | |
358 | ||
701cc384 LP |
359 | if (UNIT_VTABLE(u)->check_gc) |
360 | if (UNIT_VTABLE(u)->check_gc(u)) | |
361 | return true; | |
362 | ||
363 | return false; | |
364 | } | |
365 | ||
87f0e418 LP |
366 | void unit_add_to_load_queue(Unit *u) { |
367 | assert(u); | |
ac155bb8 | 368 | assert(u->type != _UNIT_TYPE_INVALID); |
87f0e418 | 369 | |
ac155bb8 | 370 | if (u->load_state != UNIT_STUB || u->in_load_queue) |
87f0e418 LP |
371 | return; |
372 | ||
71fda00f | 373 | LIST_PREPEND(load_queue, u->manager->load_queue, u); |
ac155bb8 | 374 | u->in_load_queue = true; |
87f0e418 LP |
375 | } |
376 | ||
23a177ef LP |
377 | void unit_add_to_cleanup_queue(Unit *u) { |
378 | assert(u); | |
379 | ||
ac155bb8 | 380 | if (u->in_cleanup_queue) |
23a177ef LP |
381 | return; |
382 | ||
71fda00f | 383 | LIST_PREPEND(cleanup_queue, u->manager->cleanup_queue, u); |
ac155bb8 | 384 | u->in_cleanup_queue = true; |
23a177ef LP |
385 | } |
386 | ||
701cc384 LP |
387 | void unit_add_to_gc_queue(Unit *u) { |
388 | assert(u); | |
389 | ||
ac155bb8 | 390 | if (u->in_gc_queue || u->in_cleanup_queue) |
701cc384 LP |
391 | return; |
392 | ||
393 | if (unit_check_gc(u)) | |
394 | return; | |
395 | ||
c5a97ed1 | 396 | LIST_PREPEND(gc_queue, u->manager->gc_unit_queue, u); |
ac155bb8 | 397 | u->in_gc_queue = true; |
701cc384 LP |
398 | } |
399 | ||
c1e1601e LP |
400 | void unit_add_to_dbus_queue(Unit *u) { |
401 | assert(u); | |
ac155bb8 | 402 | assert(u->type != _UNIT_TYPE_INVALID); |
c1e1601e | 403 | |
ac155bb8 | 404 | if (u->load_state == UNIT_STUB || u->in_dbus_queue) |
c1e1601e LP |
405 | return; |
406 | ||
a567261a | 407 | /* Shortcut things if nobody cares */ |
8f8f05a9 | 408 | if (sd_bus_track_count(u->manager->subscribed) <= 0 && |
ae572acd | 409 | sd_bus_track_count(u->bus_track) <= 0 && |
8f8f05a9 | 410 | set_isempty(u->manager->private_buses)) { |
ac155bb8 | 411 | u->sent_dbus_new_signal = true; |
94b6dfa2 LP |
412 | return; |
413 | } | |
414 | ||
71fda00f | 415 | LIST_PREPEND(dbus_queue, u->manager->dbus_unit_queue, u); |
ac155bb8 | 416 | u->in_dbus_queue = true; |
c1e1601e LP |
417 | } |
418 | ||
87f0e418 LP |
419 | static void bidi_set_free(Unit *u, Set *s) { |
420 | Iterator i; | |
421 | Unit *other; | |
422 | ||
423 | assert(u); | |
424 | ||
425 | /* Frees the set and makes sure we are dropped from the | |
426 | * inverse pointers */ | |
427 | ||
428 | SET_FOREACH(other, s, i) { | |
429 | UnitDependency d; | |
430 | ||
431 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) | |
ac155bb8 | 432 | set_remove(other->dependencies[d], u); |
701cc384 LP |
433 | |
434 | unit_add_to_gc_queue(other); | |
87f0e418 LP |
435 | } |
436 | ||
437 | set_free(s); | |
438 | } | |
439 | ||
c2756a68 LP |
440 | static void unit_remove_transient(Unit *u) { |
441 | char **i; | |
442 | ||
443 | assert(u); | |
444 | ||
445 | if (!u->transient) | |
446 | return; | |
447 | ||
448 | if (u->fragment_path) | |
3f5e8115 | 449 | (void) unlink(u->fragment_path); |
c2756a68 LP |
450 | |
451 | STRV_FOREACH(i, u->dropin_paths) { | |
39591351 | 452 | _cleanup_free_ char *p = NULL, *pp = NULL; |
c2756a68 | 453 | |
39591351 LP |
454 | p = dirname_malloc(*i); /* Get the drop-in directory from the drop-in file */ |
455 | if (!p) | |
456 | continue; | |
457 | ||
458 | pp = dirname_malloc(p); /* Get the config directory from the drop-in directory */ | |
459 | if (!pp) | |
460 | continue; | |
461 | ||
462 | /* Only drop transient drop-ins */ | |
463 | if (!path_equal(u->manager->lookup_paths.transient, pp)) | |
464 | continue; | |
c2756a68 | 465 | |
39591351 LP |
466 | (void) unlink(*i); |
467 | (void) rmdir(p); | |
c2756a68 LP |
468 | } |
469 | } | |
470 | ||
a57f7e2c LP |
471 | static void unit_free_requires_mounts_for(Unit *u) { |
472 | char **j; | |
473 | ||
474 | STRV_FOREACH(j, u->requires_mounts_for) { | |
475 | char s[strlen(*j) + 1]; | |
476 | ||
477 | PATH_FOREACH_PREFIX_MORE(s, *j) { | |
478 | char *y; | |
479 | Set *x; | |
480 | ||
481 | x = hashmap_get2(u->manager->units_requiring_mounts_for, s, (void**) &y); | |
482 | if (!x) | |
483 | continue; | |
484 | ||
485 | set_remove(x, u); | |
486 | ||
487 | if (set_isempty(x)) { | |
488 | hashmap_remove(u->manager->units_requiring_mounts_for, y); | |
489 | free(y); | |
490 | set_free(x); | |
491 | } | |
492 | } | |
493 | } | |
494 | ||
6796073e | 495 | u->requires_mounts_for = strv_free(u->requires_mounts_for); |
a57f7e2c LP |
496 | } |
497 | ||
598459ce LP |
498 | static void unit_done(Unit *u) { |
499 | ExecContext *ec; | |
500 | CGroupContext *cc; | |
501 | ||
502 | assert(u); | |
503 | ||
504 | if (u->type < 0) | |
505 | return; | |
506 | ||
507 | if (UNIT_VTABLE(u)->done) | |
508 | UNIT_VTABLE(u)->done(u); | |
509 | ||
510 | ec = unit_get_exec_context(u); | |
511 | if (ec) | |
512 | exec_context_done(ec); | |
513 | ||
514 | cc = unit_get_cgroup_context(u); | |
515 | if (cc) | |
516 | cgroup_context_done(cc); | |
517 | } | |
518 | ||
87f0e418 LP |
519 | void unit_free(Unit *u) { |
520 | UnitDependency d; | |
521 | Iterator i; | |
522 | char *t; | |
523 | ||
c9d5c9c0 LP |
524 | if (!u) |
525 | return; | |
87f0e418 | 526 | |
4f4afc88 LP |
527 | if (u->transient_file) |
528 | fclose(u->transient_file); | |
529 | ||
2c289ea8 | 530 | if (!MANAGER_IS_RELOADING(u->manager)) |
c2756a68 LP |
531 | unit_remove_transient(u); |
532 | ||
c1e1601e LP |
533 | bus_unit_send_removed_signal(u); |
534 | ||
598459ce | 535 | unit_done(u); |
a013b84b | 536 | |
cf9fd508 DM |
537 | sd_bus_slot_unref(u->match_bus_slot); |
538 | ||
05a98afd LP |
539 | sd_bus_track_unref(u->bus_track); |
540 | u->deserialized_refs = strv_free(u->deserialized_refs); | |
541 | ||
a57f7e2c LP |
542 | unit_free_requires_mounts_for(u); |
543 | ||
ac155bb8 MS |
544 | SET_FOREACH(t, u->names, i) |
545 | hashmap_remove_value(u->manager->units, t, u); | |
87f0e418 | 546 | |
4b58153d LP |
547 | if (!sd_id128_is_null(u->invocation_id)) |
548 | hashmap_remove_value(u->manager->units_by_invocation_id, &u->invocation_id, u); | |
549 | ||
97e7d748 MS |
550 | if (u->job) { |
551 | Job *j = u->job; | |
552 | job_uninstall(j); | |
553 | job_free(j); | |
554 | } | |
964e0949 | 555 | |
e0209d83 MS |
556 | if (u->nop_job) { |
557 | Job *j = u->nop_job; | |
558 | job_uninstall(j); | |
559 | job_free(j); | |
560 | } | |
561 | ||
964e0949 | 562 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) |
ac155bb8 | 563 | bidi_set_free(u, u->dependencies[d]); |
964e0949 | 564 | |
ac155bb8 | 565 | if (u->type != _UNIT_TYPE_INVALID) |
71fda00f | 566 | LIST_REMOVE(units_by_type, u->manager->units_by_type[u->type], u); |
ef734fd6 | 567 | |
ac155bb8 | 568 | if (u->in_load_queue) |
71fda00f | 569 | LIST_REMOVE(load_queue, u->manager->load_queue, u); |
87f0e418 | 570 | |
ac155bb8 | 571 | if (u->in_dbus_queue) |
71fda00f | 572 | LIST_REMOVE(dbus_queue, u->manager->dbus_unit_queue, u); |
c1e1601e | 573 | |
ac155bb8 | 574 | if (u->in_cleanup_queue) |
71fda00f | 575 | LIST_REMOVE(cleanup_queue, u->manager->cleanup_queue, u); |
23a177ef | 576 | |
a2d72e26 | 577 | if (u->in_gc_queue) |
c5a97ed1 | 578 | LIST_REMOVE(gc_queue, u->manager->gc_unit_queue, u); |
701cc384 | 579 | |
4ad49000 | 580 | if (u->in_cgroup_queue) |
71fda00f | 581 | LIST_REMOVE(cgroup_queue, u->manager->cgroup_queue, u); |
87f0e418 | 582 | |
efdb0237 | 583 | unit_release_cgroup(u); |
72673e86 | 584 | |
00d9ef85 LP |
585 | unit_unref_uid_gid(u, false); |
586 | ||
5269eb6b | 587 | (void) manager_update_failed_units(u->manager, u, false); |
db785129 | 588 | set_remove(u->manager->startup_units, u); |
f755e3b7 | 589 | |
ac155bb8 | 590 | free(u->description); |
49dbfa7b | 591 | strv_free(u->documentation); |
ac155bb8 | 592 | free(u->fragment_path); |
1b64d026 | 593 | free(u->source_path); |
ae7a7182 | 594 | strv_free(u->dropin_paths); |
ac155bb8 | 595 | free(u->instance); |
87f0e418 | 596 | |
f189ab18 LP |
597 | free(u->job_timeout_reboot_arg); |
598 | ||
ac155bb8 | 599 | set_free_free(u->names); |
87f0e418 | 600 | |
a911bb9a LP |
601 | unit_unwatch_all_pids(u); |
602 | ||
ac155bb8 | 603 | condition_free_list(u->conditions); |
59fccdc5 | 604 | condition_free_list(u->asserts); |
52661efd | 605 | |
6bf0f408 LP |
606 | free(u->reboot_arg); |
607 | ||
702a2d8f LP |
608 | unit_ref_unset(&u->slice); |
609 | ||
ac155bb8 MS |
610 | while (u->refs) |
611 | unit_ref_unset(u->refs); | |
57020a3a | 612 | |
87f0e418 LP |
613 | free(u); |
614 | } | |
615 | ||
616 | UnitActiveState unit_active_state(Unit *u) { | |
617 | assert(u); | |
618 | ||
ac155bb8 | 619 | if (u->load_state == UNIT_MERGED) |
6124958c LP |
620 | return unit_active_state(unit_follow_merge(u)); |
621 | ||
622 | /* After a reload it might happen that a unit is not correctly | |
623 | * loaded but still has a process around. That's why we won't | |
fdf20a31 | 624 | * shortcut failed loading to UNIT_INACTIVE_FAILED. */ |
87f0e418 LP |
625 | |
626 | return UNIT_VTABLE(u)->active_state(u); | |
627 | } | |
628 | ||
10a94420 LP |
629 | const char* unit_sub_state_to_string(Unit *u) { |
630 | assert(u); | |
631 | ||
632 | return UNIT_VTABLE(u)->sub_state_to_string(u); | |
633 | } | |
634 | ||
7c0b05e5 MS |
635 | static int complete_move(Set **s, Set **other) { |
636 | int r; | |
637 | ||
23a177ef LP |
638 | assert(s); |
639 | assert(other); | |
87f0e418 | 640 | |
23a177ef | 641 | if (!*other) |
7c0b05e5 | 642 | return 0; |
87f0e418 | 643 | |
7c0b05e5 MS |
644 | if (*s) { |
645 | r = set_move(*s, *other); | |
646 | if (r < 0) | |
647 | return r; | |
648 | } else { | |
23a177ef LP |
649 | *s = *other; |
650 | *other = NULL; | |
651 | } | |
7c0b05e5 MS |
652 | |
653 | return 0; | |
23a177ef | 654 | } |
87f0e418 | 655 | |
7c0b05e5 | 656 | static int merge_names(Unit *u, Unit *other) { |
23a177ef LP |
657 | char *t; |
658 | Iterator i; | |
7c0b05e5 | 659 | int r; |
87f0e418 | 660 | |
23a177ef LP |
661 | assert(u); |
662 | assert(other); | |
663 | ||
7c0b05e5 MS |
664 | r = complete_move(&u->names, &other->names); |
665 | if (r < 0) | |
666 | return r; | |
23a177ef | 667 | |
ac155bb8 MS |
668 | set_free_free(other->names); |
669 | other->names = NULL; | |
670 | other->id = NULL; | |
23a177ef | 671 | |
ac155bb8 MS |
672 | SET_FOREACH(t, u->names, i) |
673 | assert_se(hashmap_replace(u->manager->units, t, u) == 0); | |
7c0b05e5 MS |
674 | |
675 | return 0; | |
87f0e418 LP |
676 | } |
677 | ||
09a65f92 MS |
678 | static int reserve_dependencies(Unit *u, Unit *other, UnitDependency d) { |
679 | unsigned n_reserve; | |
680 | ||
681 | assert(u); | |
682 | assert(other); | |
683 | assert(d < _UNIT_DEPENDENCY_MAX); | |
684 | ||
685 | /* | |
686 | * If u does not have this dependency set allocated, there is no need | |
f131770b | 687 | * to reserve anything. In that case other's set will be transferred |
09a65f92 MS |
688 | * as a whole to u by complete_move(). |
689 | */ | |
690 | if (!u->dependencies[d]) | |
691 | return 0; | |
692 | ||
693 | /* merge_dependencies() will skip a u-on-u dependency */ | |
694 | n_reserve = set_size(other->dependencies[d]) - !!set_get(other->dependencies[d], u); | |
695 | ||
696 | return set_reserve(u->dependencies[d], n_reserve); | |
697 | } | |
698 | ||
d1fab3fe | 699 | static void merge_dependencies(Unit *u, Unit *other, const char *other_id, UnitDependency d) { |
23a177ef LP |
700 | Iterator i; |
701 | Unit *back; | |
87f0e418 | 702 | int r; |
23a177ef LP |
703 | |
704 | assert(u); | |
705 | assert(other); | |
706 | assert(d < _UNIT_DEPENDENCY_MAX); | |
707 | ||
83a95334 | 708 | /* Fix backwards pointers */ |
ac155bb8 | 709 | SET_FOREACH(back, other->dependencies[d], i) { |
23a177ef LP |
710 | UnitDependency k; |
711 | ||
e48614c4 | 712 | for (k = 0; k < _UNIT_DEPENDENCY_MAX; k++) { |
e66047ff ZJS |
713 | /* Do not add dependencies between u and itself */ |
714 | if (back == u) { | |
d1fab3fe | 715 | if (set_remove(back->dependencies[k], other)) |
f2341e0a | 716 | maybe_warn_about_dependency(u, other_id, k); |
e66047ff ZJS |
717 | } else { |
718 | r = set_remove_and_put(back->dependencies[k], other, u); | |
719 | if (r == -EEXIST) | |
720 | set_remove(back->dependencies[k], other); | |
721 | else | |
722 | assert(r >= 0 || r == -ENOENT); | |
723 | } | |
e48614c4 | 724 | } |
23a177ef LP |
725 | } |
726 | ||
e66047ff | 727 | /* Also do not move dependencies on u to itself */ |
d1fab3fe ZJS |
728 | back = set_remove(other->dependencies[d], u); |
729 | if (back) | |
f2341e0a | 730 | maybe_warn_about_dependency(u, other_id, d); |
e66047ff | 731 | |
7c0b05e5 MS |
732 | /* The move cannot fail. The caller must have performed a reservation. */ |
733 | assert_se(complete_move(&u->dependencies[d], &other->dependencies[d]) == 0); | |
23a177ef | 734 | |
525d3cc7 | 735 | other->dependencies[d] = set_free(other->dependencies[d]); |
23a177ef LP |
736 | } |
737 | ||
738 | int unit_merge(Unit *u, Unit *other) { | |
87f0e418 | 739 | UnitDependency d; |
d1fab3fe | 740 | const char *other_id = NULL; |
09a65f92 | 741 | int r; |
87f0e418 LP |
742 | |
743 | assert(u); | |
744 | assert(other); | |
ac155bb8 MS |
745 | assert(u->manager == other->manager); |
746 | assert(u->type != _UNIT_TYPE_INVALID); | |
87f0e418 | 747 | |
cc916967 LP |
748 | other = unit_follow_merge(other); |
749 | ||
23a177ef LP |
750 | if (other == u) |
751 | return 0; | |
752 | ||
ac155bb8 | 753 | if (u->type != other->type) |
9e2f7c11 LP |
754 | return -EINVAL; |
755 | ||
ac155bb8 | 756 | if (!u->instance != !other->instance) |
87f0e418 LP |
757 | return -EINVAL; |
758 | ||
8a993b61 | 759 | if (!unit_type_may_alias(u->type)) /* Merging only applies to unit names that support aliases */ |
934e749e LP |
760 | return -EEXIST; |
761 | ||
ac155bb8 | 762 | if (other->load_state != UNIT_STUB && |
c2756a68 | 763 | other->load_state != UNIT_NOT_FOUND) |
23a177ef | 764 | return -EEXIST; |
87f0e418 | 765 | |
ac155bb8 | 766 | if (other->job) |
819e213f LP |
767 | return -EEXIST; |
768 | ||
e0209d83 MS |
769 | if (other->nop_job) |
770 | return -EEXIST; | |
771 | ||
fdf20a31 | 772 | if (!UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other))) |
819e213f LP |
773 | return -EEXIST; |
774 | ||
d1fab3fe ZJS |
775 | if (other->id) |
776 | other_id = strdupa(other->id); | |
777 | ||
09a65f92 MS |
778 | /* Make reservations to ensure merge_dependencies() won't fail */ |
779 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) { | |
780 | r = reserve_dependencies(u, other, d); | |
781 | /* | |
782 | * We don't rollback reservations if we fail. We don't have | |
783 | * a way to undo reservations. A reservation is not a leak. | |
784 | */ | |
785 | if (r < 0) | |
786 | return r; | |
787 | } | |
788 | ||
87f0e418 | 789 | /* Merge names */ |
7c0b05e5 MS |
790 | r = merge_names(u, other); |
791 | if (r < 0) | |
792 | return r; | |
87f0e418 | 793 | |
57020a3a | 794 | /* Redirect all references */ |
ac155bb8 MS |
795 | while (other->refs) |
796 | unit_ref_set(other->refs, u); | |
57020a3a | 797 | |
87f0e418 LP |
798 | /* Merge dependencies */ |
799 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) | |
d1fab3fe | 800 | merge_dependencies(u, other, other_id, d); |
87f0e418 | 801 | |
ac155bb8 MS |
802 | other->load_state = UNIT_MERGED; |
803 | other->merged_into = u; | |
23a177ef | 804 | |
3616a49c LP |
805 | /* If there is still some data attached to the other node, we |
806 | * don't need it anymore, and can free it. */ | |
ac155bb8 | 807 | if (other->load_state != UNIT_STUB) |
3616a49c LP |
808 | if (UNIT_VTABLE(other)->done) |
809 | UNIT_VTABLE(other)->done(other); | |
810 | ||
811 | unit_add_to_dbus_queue(u); | |
23a177ef LP |
812 | unit_add_to_cleanup_queue(other); |
813 | ||
814 | return 0; | |
815 | } | |
816 | ||
817 | int unit_merge_by_name(Unit *u, const char *name) { | |
934e749e | 818 | _cleanup_free_ char *s = NULL; |
23a177ef | 819 | Unit *other; |
9e2f7c11 | 820 | int r; |
23a177ef LP |
821 | |
822 | assert(u); | |
823 | assert(name); | |
824 | ||
7410616c | 825 | if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) { |
ac155bb8 | 826 | if (!u->instance) |
9e2f7c11 LP |
827 | return -EINVAL; |
828 | ||
7410616c LP |
829 | r = unit_name_replace_instance(name, u->instance, &s); |
830 | if (r < 0) | |
831 | return r; | |
9e2f7c11 LP |
832 | |
833 | name = s; | |
834 | } | |
835 | ||
c2756a68 | 836 | other = manager_get_unit(u->manager, name); |
7410616c LP |
837 | if (other) |
838 | return unit_merge(u, other); | |
23a177ef | 839 | |
7410616c | 840 | return unit_add_name(u, name); |
23a177ef LP |
841 | } |
842 | ||
843 | Unit* unit_follow_merge(Unit *u) { | |
844 | assert(u); | |
845 | ||
ac155bb8 MS |
846 | while (u->load_state == UNIT_MERGED) |
847 | assert_se(u = u->merged_into); | |
23a177ef LP |
848 | |
849 | return u; | |
850 | } | |
851 | ||
852 | int unit_add_exec_dependencies(Unit *u, ExecContext *c) { | |
ada5e276 YW |
853 | ExecDirectoryType dt; |
854 | char **dp; | |
23a177ef LP |
855 | int r; |
856 | ||
857 | assert(u); | |
858 | assert(c); | |
859 | ||
36be24c8 ZJS |
860 | if (c->working_directory) { |
861 | r = unit_require_mounts_for(u, c->working_directory); | |
862 | if (r < 0) | |
863 | return r; | |
864 | } | |
865 | ||
866 | if (c->root_directory) { | |
867 | r = unit_require_mounts_for(u, c->root_directory); | |
868 | if (r < 0) | |
869 | return r; | |
870 | } | |
871 | ||
915e6d16 LP |
872 | if (c->root_image) { |
873 | r = unit_require_mounts_for(u, c->root_image); | |
874 | if (r < 0) | |
875 | return r; | |
876 | } | |
877 | ||
ada5e276 YW |
878 | for (dt = 0; dt < _EXEC_DIRECTORY_MAX; dt++) { |
879 | if (!u->manager->prefix[dt]) | |
880 | continue; | |
881 | ||
882 | STRV_FOREACH(dp, c->directories[dt].paths) { | |
883 | _cleanup_free_ char *p; | |
884 | ||
885 | p = strjoin(u->manager->prefix[dt], "/", *dp); | |
886 | if (!p) | |
887 | return -ENOMEM; | |
888 | ||
889 | r = unit_require_mounts_for(u, p); | |
890 | if (r < 0) | |
891 | return r; | |
892 | } | |
893 | } | |
894 | ||
463d0d15 | 895 | if (!MANAGER_IS_SYSTEM(u->manager)) |
b46a529c LP |
896 | return 0; |
897 | ||
898 | if (c->private_tmp) { | |
d71f0505 LP |
899 | const char *p; |
900 | ||
901 | FOREACH_STRING(p, "/tmp", "/var/tmp") { | |
902 | r = unit_require_mounts_for(u, p); | |
903 | if (r < 0) | |
904 | return r; | |
905 | } | |
b46a529c | 906 | |
d71f0505 | 907 | r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_TMPFILES_SETUP_SERVICE, NULL, true); |
b46a529c LP |
908 | if (r < 0) |
909 | return r; | |
910 | } | |
911 | ||
52c239d7 LB |
912 | if (!IN_SET(c->std_output, |
913 | EXEC_OUTPUT_JOURNAL, EXEC_OUTPUT_JOURNAL_AND_CONSOLE, | |
914 | EXEC_OUTPUT_KMSG, EXEC_OUTPUT_KMSG_AND_CONSOLE, | |
915 | EXEC_OUTPUT_SYSLOG, EXEC_OUTPUT_SYSLOG_AND_CONSOLE) && | |
916 | !IN_SET(c->std_error, | |
917 | EXEC_OUTPUT_JOURNAL, EXEC_OUTPUT_JOURNAL_AND_CONSOLE, | |
918 | EXEC_OUTPUT_KMSG, EXEC_OUTPUT_KMSG_AND_CONSOLE, | |
919 | EXEC_OUTPUT_SYSLOG, EXEC_OUTPUT_SYSLOG_AND_CONSOLE)) | |
23a177ef LP |
920 | return 0; |
921 | ||
922 | /* If syslog or kernel logging is requested, make sure our own | |
923 | * logging daemon is run first. */ | |
924 | ||
b46a529c LP |
925 | r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_JOURNALD_SOCKET, NULL, true); |
926 | if (r < 0) | |
927 | return r; | |
23a177ef | 928 | |
87f0e418 LP |
929 | return 0; |
930 | } | |
931 | ||
87f0e418 LP |
932 | const char *unit_description(Unit *u) { |
933 | assert(u); | |
934 | ||
ac155bb8 MS |
935 | if (u->description) |
936 | return u->description; | |
87f0e418 | 937 | |
ac155bb8 | 938 | return strna(u->id); |
87f0e418 LP |
939 | } |
940 | ||
941 | void unit_dump(Unit *u, FILE *f, const char *prefix) { | |
49dbfa7b | 942 | char *t, **j; |
87f0e418 LP |
943 | UnitDependency d; |
944 | Iterator i; | |
47be870b | 945 | const char *prefix2; |
173e3821 | 946 | char |
a483fb59 | 947 | timestamp0[FORMAT_TIMESTAMP_MAX], |
173e3821 LP |
948 | timestamp1[FORMAT_TIMESTAMP_MAX], |
949 | timestamp2[FORMAT_TIMESTAMP_MAX], | |
950 | timestamp3[FORMAT_TIMESTAMP_MAX], | |
faf919f1 LP |
951 | timestamp4[FORMAT_TIMESTAMP_MAX], |
952 | timespan[FORMAT_TIMESPAN_MAX]; | |
a7f241db | 953 | Unit *following; |
eeaedb7c LP |
954 | _cleanup_set_free_ Set *following_set = NULL; |
955 | int r; | |
05a98afd | 956 | const char *n; |
87f0e418 LP |
957 | |
958 | assert(u); | |
ac155bb8 | 959 | assert(u->type >= 0); |
87f0e418 | 960 | |
4c940960 | 961 | prefix = strempty(prefix); |
63c372cb | 962 | prefix2 = strjoina(prefix, "\t"); |
87f0e418 LP |
963 | |
964 | fprintf(f, | |
40d50879 | 965 | "%s-> Unit %s:\n" |
87f0e418 | 966 | "%s\tDescription: %s\n" |
9e2f7c11 | 967 | "%s\tInstance: %s\n" |
87f0e418 | 968 | "%s\tUnit Load State: %s\n" |
2fad8195 | 969 | "%s\tUnit Active State: %s\n" |
b895d155 | 970 | "%s\tState Change Timestamp: %s\n" |
173e3821 | 971 | "%s\tInactive Exit Timestamp: %s\n" |
2fad8195 | 972 | "%s\tActive Enter Timestamp: %s\n" |
701cc384 | 973 | "%s\tActive Exit Timestamp: %s\n" |
173e3821 | 974 | "%s\tInactive Enter Timestamp: %s\n" |
45fb0699 | 975 | "%s\tGC Check Good: %s\n" |
9444b1f2 | 976 | "%s\tNeed Daemon Reload: %s\n" |
c2756a68 | 977 | "%s\tTransient: %s\n" |
f5869324 | 978 | "%s\tPerpetual: %s\n" |
4ad49000 LP |
979 | "%s\tSlice: %s\n" |
980 | "%s\tCGroup: %s\n" | |
aae7e17f | 981 | "%s\tCGroup realized: %s\n", |
ac155bb8 | 982 | prefix, u->id, |
87f0e418 | 983 | prefix, unit_description(u), |
ac155bb8 MS |
984 | prefix, strna(u->instance), |
985 | prefix, unit_load_state_to_string(u->load_state), | |
2fad8195 | 986 | prefix, unit_active_state_to_string(unit_active_state(u)), |
a483fb59 | 987 | prefix, strna(format_timestamp(timestamp0, sizeof(timestamp0), u->state_change_timestamp.realtime)), |
ac155bb8 MS |
988 | prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->inactive_exit_timestamp.realtime)), |
989 | prefix, strna(format_timestamp(timestamp2, sizeof(timestamp2), u->active_enter_timestamp.realtime)), | |
990 | prefix, strna(format_timestamp(timestamp3, sizeof(timestamp3), u->active_exit_timestamp.realtime)), | |
991 | prefix, strna(format_timestamp(timestamp4, sizeof(timestamp4), u->inactive_enter_timestamp.realtime)), | |
45fb0699 | 992 | prefix, yes_no(unit_check_gc(u)), |
9444b1f2 | 993 | prefix, yes_no(unit_need_daemon_reload(u)), |
c2756a68 | 994 | prefix, yes_no(u->transient), |
f5869324 | 995 | prefix, yes_no(u->perpetual), |
4ad49000 LP |
996 | prefix, strna(unit_slice_name(u)), |
997 | prefix, strna(u->cgroup_path), | |
aae7e17f FB |
998 | prefix, yes_no(u->cgroup_realized)); |
999 | ||
1000 | if (u->cgroup_realized_mask != 0) { | |
1001 | _cleanup_free_ char *s = NULL; | |
1002 | (void) cg_mask_to_string(u->cgroup_realized_mask, &s); | |
1003 | fprintf(f, "%s\tCGroup mask: %s\n", prefix, strnull(s)); | |
1004 | } | |
1005 | if (u->cgroup_members_mask != 0) { | |
1006 | _cleanup_free_ char *s = NULL; | |
1007 | (void) cg_mask_to_string(u->cgroup_members_mask, &s); | |
1008 | fprintf(f, "%s\tCGroup members mask: %s\n", prefix, strnull(s)); | |
1009 | } | |
0301abf4 | 1010 | |
ac155bb8 | 1011 | SET_FOREACH(t, u->names, i) |
87f0e418 LP |
1012 | fprintf(f, "%s\tName: %s\n", prefix, t); |
1013 | ||
4b58153d LP |
1014 | if (!sd_id128_is_null(u->invocation_id)) |
1015 | fprintf(f, "%s\tInvocation ID: " SD_ID128_FORMAT_STR "\n", | |
1016 | prefix, SD_ID128_FORMAT_VAL(u->invocation_id)); | |
1017 | ||
49dbfa7b LP |
1018 | STRV_FOREACH(j, u->documentation) |
1019 | fprintf(f, "%s\tDocumentation: %s\n", prefix, *j); | |
1020 | ||
eeaedb7c LP |
1021 | following = unit_following(u); |
1022 | if (following) | |
ac155bb8 | 1023 | fprintf(f, "%s\tFollowing: %s\n", prefix, following->id); |
8fe914ec | 1024 | |
eeaedb7c LP |
1025 | r = unit_following_set(u, &following_set); |
1026 | if (r >= 0) { | |
1027 | Unit *other; | |
1028 | ||
1029 | SET_FOREACH(other, following_set, i) | |
1030 | fprintf(f, "%s\tFollowing Set Member: %s\n", prefix, other->id); | |
1031 | } | |
1032 | ||
ac155bb8 MS |
1033 | if (u->fragment_path) |
1034 | fprintf(f, "%s\tFragment Path: %s\n", prefix, u->fragment_path); | |
23a177ef | 1035 | |
1b64d026 LP |
1036 | if (u->source_path) |
1037 | fprintf(f, "%s\tSource Path: %s\n", prefix, u->source_path); | |
1038 | ||
ae7a7182 | 1039 | STRV_FOREACH(j, u->dropin_paths) |
2875e22b | 1040 | fprintf(f, "%s\tDropIn Path: %s\n", prefix, *j); |
ae7a7182 | 1041 | |
36c16a7c | 1042 | if (u->job_timeout != USEC_INFINITY) |
2fa4092c | 1043 | fprintf(f, "%s\tJob Timeout: %s\n", prefix, format_timespan(timespan, sizeof(timespan), u->job_timeout, 0)); |
faf919f1 | 1044 | |
87a47f99 LN |
1045 | if (u->job_timeout_action != EMERGENCY_ACTION_NONE) |
1046 | fprintf(f, "%s\tJob Timeout Action: %s\n", prefix, emergency_action_to_string(u->job_timeout_action)); | |
f189ab18 LP |
1047 | |
1048 | if (u->job_timeout_reboot_arg) | |
1049 | fprintf(f, "%s\tJob Timeout Reboot Argument: %s\n", prefix, u->job_timeout_reboot_arg); | |
1050 | ||
59fccdc5 LP |
1051 | condition_dump_list(u->conditions, f, prefix, condition_type_to_string); |
1052 | condition_dump_list(u->asserts, f, prefix, assert_type_to_string); | |
52661efd | 1053 | |
ac155bb8 | 1054 | if (dual_timestamp_is_set(&u->condition_timestamp)) |
2791a8f8 LP |
1055 | fprintf(f, |
1056 | "%s\tCondition Timestamp: %s\n" | |
1057 | "%s\tCondition Result: %s\n", | |
ac155bb8 MS |
1058 | prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->condition_timestamp.realtime)), |
1059 | prefix, yes_no(u->condition_result)); | |
2791a8f8 | 1060 | |
59fccdc5 LP |
1061 | if (dual_timestamp_is_set(&u->assert_timestamp)) |
1062 | fprintf(f, | |
1063 | "%s\tAssert Timestamp: %s\n" | |
1064 | "%s\tAssert Result: %s\n", | |
1065 | prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->assert_timestamp.realtime)), | |
1066 | prefix, yes_no(u->assert_result)); | |
1067 | ||
87f0e418 LP |
1068 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) { |
1069 | Unit *other; | |
1070 | ||
ac155bb8 MS |
1071 | SET_FOREACH(other, u->dependencies[d], i) |
1072 | fprintf(f, "%s\t%s: %s\n", prefix, unit_dependency_to_string(d), other->id); | |
87f0e418 LP |
1073 | } |
1074 | ||
7c8fa05c | 1075 | if (!strv_isempty(u->requires_mounts_for)) { |
7c8fa05c LP |
1076 | fprintf(f, |
1077 | "%s\tRequiresMountsFor:", prefix); | |
1078 | ||
1079 | STRV_FOREACH(j, u->requires_mounts_for) | |
1080 | fprintf(f, " %s", *j); | |
1081 | ||
1082 | fputs("\n", f); | |
1083 | } | |
1084 | ||
ac155bb8 | 1085 | if (u->load_state == UNIT_LOADED) { |
ab1f0633 | 1086 | |
b0650475 | 1087 | fprintf(f, |
a40eb732 | 1088 | "%s\tStopWhenUnneeded: %s\n" |
b5e9dba8 LP |
1089 | "%s\tRefuseManualStart: %s\n" |
1090 | "%s\tRefuseManualStop: %s\n" | |
222ae6a8 | 1091 | "%s\tDefaultDependencies: %s\n" |
d420282b | 1092 | "%s\tOnFailureJobMode: %s\n" |
36b4a7ba | 1093 | "%s\tIgnoreOnIsolate: %s\n", |
ac155bb8 MS |
1094 | prefix, yes_no(u->stop_when_unneeded), |
1095 | prefix, yes_no(u->refuse_manual_start), | |
1096 | prefix, yes_no(u->refuse_manual_stop), | |
1097 | prefix, yes_no(u->default_dependencies), | |
d420282b | 1098 | prefix, job_mode_to_string(u->on_failure_job_mode), |
36b4a7ba | 1099 | prefix, yes_no(u->ignore_on_isolate)); |
ac155bb8 | 1100 | |
23a177ef LP |
1101 | if (UNIT_VTABLE(u)->dump) |
1102 | UNIT_VTABLE(u)->dump(u, f, prefix2); | |
b0650475 | 1103 | |
ac155bb8 | 1104 | } else if (u->load_state == UNIT_MERGED) |
b0650475 LP |
1105 | fprintf(f, |
1106 | "%s\tMerged into: %s\n", | |
ac155bb8 MS |
1107 | prefix, u->merged_into->id); |
1108 | else if (u->load_state == UNIT_ERROR) | |
1109 | fprintf(f, "%s\tLoad Error Code: %s\n", prefix, strerror(-u->load_error)); | |
8821a00f | 1110 | |
05a98afd LP |
1111 | for (n = sd_bus_track_first(u->bus_track); n; n = sd_bus_track_next(u->bus_track)) |
1112 | fprintf(f, "%s\tBus Ref: %s\n", prefix, n); | |
87f0e418 | 1113 | |
ac155bb8 MS |
1114 | if (u->job) |
1115 | job_dump(u->job, f, prefix2); | |
87f0e418 | 1116 | |
e0209d83 MS |
1117 | if (u->nop_job) |
1118 | job_dump(u->nop_job, f, prefix2); | |
87f0e418 LP |
1119 | } |
1120 | ||
1121 | /* Common implementation for multiple backends */ | |
e537352b | 1122 | int unit_load_fragment_and_dropin(Unit *u) { |
23a177ef LP |
1123 | int r; |
1124 | ||
1125 | assert(u); | |
23a177ef | 1126 | |
e48614c4 | 1127 | /* Load a .{service,socket,...} file */ |
4ad49000 LP |
1128 | r = unit_load_fragment(u); |
1129 | if (r < 0) | |
23a177ef LP |
1130 | return r; |
1131 | ||
ac155bb8 | 1132 | if (u->load_state == UNIT_STUB) |
23a177ef LP |
1133 | return -ENOENT; |
1134 | ||
9e4ea9cc ZJS |
1135 | /* Load drop-in directory data. If u is an alias, we might be reloading the |
1136 | * target unit needlessly. But we cannot be sure which drops-ins have already | |
1137 | * been loaded and which not, at least without doing complicated book-keeping, | |
1138 | * so let's always reread all drop-ins. */ | |
1139 | return unit_load_dropin(unit_follow_merge(u)); | |
23a177ef LP |
1140 | } |
1141 | ||
1142 | /* Common implementation for multiple backends */ | |
e537352b | 1143 | int unit_load_fragment_and_dropin_optional(Unit *u) { |
23a177ef | 1144 | int r; |
87f0e418 LP |
1145 | |
1146 | assert(u); | |
1147 | ||
23a177ef LP |
1148 | /* Same as unit_load_fragment_and_dropin(), but whether |
1149 | * something can be loaded or not doesn't matter. */ | |
1150 | ||
1151 | /* Load a .service file */ | |
4ad49000 LP |
1152 | r = unit_load_fragment(u); |
1153 | if (r < 0) | |
87f0e418 LP |
1154 | return r; |
1155 | ||
ac155bb8 MS |
1156 | if (u->load_state == UNIT_STUB) |
1157 | u->load_state = UNIT_LOADED; | |
d46de8a1 | 1158 | |
9e4ea9cc ZJS |
1159 | /* Load drop-in directory data */ |
1160 | return unit_load_dropin(unit_follow_merge(u)); | |
87f0e418 LP |
1161 | } |
1162 | ||
bba34eed | 1163 | int unit_add_default_target_dependency(Unit *u, Unit *target) { |
98bc2000 LP |
1164 | assert(u); |
1165 | assert(target); | |
1166 | ||
ac155bb8 | 1167 | if (target->type != UNIT_TARGET) |
98bc2000 LP |
1168 | return 0; |
1169 | ||
35b8ca3a | 1170 | /* Only add the dependency if both units are loaded, so that |
bba34eed | 1171 | * that loop check below is reliable */ |
ac155bb8 MS |
1172 | if (u->load_state != UNIT_LOADED || |
1173 | target->load_state != UNIT_LOADED) | |
bba34eed LP |
1174 | return 0; |
1175 | ||
21256a2b LP |
1176 | /* If either side wants no automatic dependencies, then let's |
1177 | * skip this */ | |
ac155bb8 MS |
1178 | if (!u->default_dependencies || |
1179 | !target->default_dependencies) | |
21256a2b LP |
1180 | return 0; |
1181 | ||
98bc2000 | 1182 | /* Don't create loops */ |
ac155bb8 | 1183 | if (set_get(target->dependencies[UNIT_BEFORE], u)) |
98bc2000 LP |
1184 | return 0; |
1185 | ||
1186 | return unit_add_dependency(target, UNIT_AFTER, u, true); | |
1187 | } | |
1188 | ||
e954c9cf | 1189 | static int unit_add_target_dependencies(Unit *u) { |
a016b922 | 1190 | |
21256a2b LP |
1191 | static const UnitDependency deps[] = { |
1192 | UNIT_REQUIRED_BY, | |
be7d9ff7 | 1193 | UNIT_REQUISITE_OF, |
21256a2b LP |
1194 | UNIT_WANTED_BY, |
1195 | UNIT_BOUND_BY | |
1196 | }; | |
1197 | ||
bba34eed | 1198 | Unit *target; |
98bc2000 | 1199 | Iterator i; |
21256a2b | 1200 | unsigned k; |
db57f3c6 | 1201 | int r = 0; |
98bc2000 LP |
1202 | |
1203 | assert(u); | |
1204 | ||
21256a2b | 1205 | for (k = 0; k < ELEMENTSOF(deps); k++) |
a016b922 LP |
1206 | SET_FOREACH(target, u->dependencies[deps[k]], i) { |
1207 | r = unit_add_default_target_dependency(u, target); | |
1208 | if (r < 0) | |
21256a2b | 1209 | return r; |
a016b922 LP |
1210 | } |
1211 | ||
e954c9cf LP |
1212 | return r; |
1213 | } | |
4ad49000 | 1214 | |
e954c9cf LP |
1215 | static int unit_add_slice_dependencies(Unit *u) { |
1216 | assert(u); | |
b81884e7 | 1217 | |
35b7ff80 | 1218 | if (!UNIT_HAS_CGROUP_CONTEXT(u)) |
e954c9cf LP |
1219 | return 0; |
1220 | ||
1221 | if (UNIT_ISSET(u->slice)) | |
8c8da0e0 | 1222 | return unit_add_two_dependencies(u, UNIT_AFTER, UNIT_REQUIRES, UNIT_DEREF(u->slice), true); |
e954c9cf | 1223 | |
8c8da0e0 | 1224 | if (unit_has_name(u, SPECIAL_ROOT_SLICE)) |
d1fab3fe ZJS |
1225 | return 0; |
1226 | ||
8c8da0e0 | 1227 | return unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_ROOT_SLICE, NULL, true); |
98bc2000 LP |
1228 | } |
1229 | ||
e954c9cf | 1230 | static int unit_add_mount_dependencies(Unit *u) { |
9588bc32 LP |
1231 | char **i; |
1232 | int r; | |
1233 | ||
1234 | assert(u); | |
1235 | ||
1236 | STRV_FOREACH(i, u->requires_mounts_for) { | |
1237 | char prefix[strlen(*i) + 1]; | |
1238 | ||
1239 | PATH_FOREACH_PREFIX_MORE(prefix, *i) { | |
c7c89abb | 1240 | _cleanup_free_ char *p = NULL; |
9588bc32 LP |
1241 | Unit *m; |
1242 | ||
c7c89abb | 1243 | r = unit_name_from_path(prefix, ".mount", &p); |
9588bc32 LP |
1244 | if (r < 0) |
1245 | return r; | |
c7c89abb FB |
1246 | |
1247 | m = manager_get_unit(u->manager, p); | |
1248 | if (!m) { | |
1249 | /* Make sure to load the mount unit if | |
1250 | * it exists. If so the dependencies | |
1251 | * on this unit will be added later | |
1252 | * during the loading of the mount | |
1253 | * unit. */ | |
1254 | (void) manager_load_unit_prepare(u->manager, p, NULL, NULL, &m); | |
9588bc32 | 1255 | continue; |
c7c89abb | 1256 | } |
9588bc32 LP |
1257 | if (m == u) |
1258 | continue; | |
1259 | ||
1260 | if (m->load_state != UNIT_LOADED) | |
1261 | continue; | |
1262 | ||
1263 | r = unit_add_dependency(u, UNIT_AFTER, m, true); | |
1264 | if (r < 0) | |
1265 | return r; | |
1266 | ||
1267 | if (m->fragment_path) { | |
1268 | r = unit_add_dependency(u, UNIT_REQUIRES, m, true); | |
1269 | if (r < 0) | |
1270 | return r; | |
1271 | } | |
1272 | } | |
1273 | } | |
1274 | ||
1275 | return 0; | |
1276 | } | |
1277 | ||
95ae05c0 WC |
1278 | static int unit_add_startup_units(Unit *u) { |
1279 | CGroupContext *c; | |
5269eb6b | 1280 | int r; |
95ae05c0 WC |
1281 | |
1282 | c = unit_get_cgroup_context(u); | |
db785129 LP |
1283 | if (!c) |
1284 | return 0; | |
1285 | ||
d53d9474 | 1286 | if (c->startup_cpu_shares == CGROUP_CPU_SHARES_INVALID && |
13c31542 | 1287 | c->startup_io_weight == CGROUP_WEIGHT_INVALID && |
d53d9474 | 1288 | c->startup_blockio_weight == CGROUP_BLKIO_WEIGHT_INVALID) |
db785129 LP |
1289 | return 0; |
1290 | ||
5269eb6b LP |
1291 | r = set_ensure_allocated(&u->manager->startup_units, NULL); |
1292 | if (r < 0) | |
1293 | return r; | |
1294 | ||
756c09e6 | 1295 | return set_put(u->manager->startup_units, u); |
95ae05c0 WC |
1296 | } |
1297 | ||
87f0e418 LP |
1298 | int unit_load(Unit *u) { |
1299 | int r; | |
1300 | ||
1301 | assert(u); | |
1302 | ||
ac155bb8 | 1303 | if (u->in_load_queue) { |
71fda00f | 1304 | LIST_REMOVE(load_queue, u->manager->load_queue, u); |
ac155bb8 | 1305 | u->in_load_queue = false; |
87f0e418 LP |
1306 | } |
1307 | ||
ac155bb8 | 1308 | if (u->type == _UNIT_TYPE_INVALID) |
e537352b LP |
1309 | return -EINVAL; |
1310 | ||
ac155bb8 | 1311 | if (u->load_state != UNIT_STUB) |
87f0e418 LP |
1312 | return 0; |
1313 | ||
4f4afc88 LP |
1314 | if (u->transient_file) { |
1315 | r = fflush_and_check(u->transient_file); | |
1316 | if (r < 0) | |
1317 | goto fail; | |
1318 | ||
1319 | fclose(u->transient_file); | |
1320 | u->transient_file = NULL; | |
f9ba08fb | 1321 | |
f76707da | 1322 | u->fragment_mtime = now(CLOCK_REALTIME); |
4f4afc88 LP |
1323 | } |
1324 | ||
c2756a68 LP |
1325 | if (UNIT_VTABLE(u)->load) { |
1326 | r = UNIT_VTABLE(u)->load(u); | |
1327 | if (r < 0) | |
87f0e418 | 1328 | goto fail; |
c2756a68 | 1329 | } |
23a177ef | 1330 | |
ac155bb8 | 1331 | if (u->load_state == UNIT_STUB) { |
23a177ef LP |
1332 | r = -ENOENT; |
1333 | goto fail; | |
1334 | } | |
1335 | ||
7c8fa05c | 1336 | if (u->load_state == UNIT_LOADED) { |
c2756a68 | 1337 | |
e954c9cf LP |
1338 | r = unit_add_target_dependencies(u); |
1339 | if (r < 0) | |
1340 | goto fail; | |
1341 | ||
1342 | r = unit_add_slice_dependencies(u); | |
1343 | if (r < 0) | |
1344 | goto fail; | |
c2756a68 | 1345 | |
e954c9cf | 1346 | r = unit_add_mount_dependencies(u); |
7c8fa05c | 1347 | if (r < 0) |
c2756a68 | 1348 | goto fail; |
7c8fa05c | 1349 | |
95ae05c0 WC |
1350 | r = unit_add_startup_units(u); |
1351 | if (r < 0) | |
1352 | goto fail; | |
1353 | ||
bc432dc7 | 1354 | if (u->on_failure_job_mode == JOB_ISOLATE && set_size(u->dependencies[UNIT_ON_FAILURE]) > 1) { |
f2341e0a | 1355 | log_unit_error(u, "More than one OnFailure= dependencies specified but OnFailureJobMode=isolate set. Refusing."); |
c2756a68 LP |
1356 | r = -EINVAL; |
1357 | goto fail; | |
1358 | } | |
bc432dc7 | 1359 | |
a2df3ea4 MK |
1360 | if (u->job_running_timeout != USEC_INFINITY && u->job_running_timeout > u->job_timeout) |
1361 | log_unit_warning(u, "JobRunningTimeoutSec= is greater than JobTimeoutSec=, it has no effect."); | |
1362 | ||
bc432dc7 | 1363 | unit_update_cgroup_members_masks(u); |
f68319bb LP |
1364 | } |
1365 | ||
ac155bb8 | 1366 | assert((u->load_state != UNIT_MERGED) == !u->merged_into); |
23a177ef LP |
1367 | |
1368 | unit_add_to_dbus_queue(unit_follow_merge(u)); | |
701cc384 | 1369 | unit_add_to_gc_queue(u); |
87f0e418 | 1370 | |
87f0e418 LP |
1371 | return 0; |
1372 | ||
1373 | fail: | |
c2756a68 | 1374 | u->load_state = u->load_state == UNIT_STUB ? UNIT_NOT_FOUND : UNIT_ERROR; |
ac155bb8 | 1375 | u->load_error = r; |
c1e1601e | 1376 | unit_add_to_dbus_queue(u); |
9a46fc3b | 1377 | unit_add_to_gc_queue(u); |
23a177ef | 1378 | |
f2341e0a | 1379 | log_unit_debug_errno(u, r, "Failed to load configuration: %m"); |
23a177ef | 1380 | |
87f0e418 LP |
1381 | return r; |
1382 | } | |
1383 | ||
49365733 LP |
1384 | static bool unit_condition_test_list(Unit *u, Condition *first, const char *(*to_string)(ConditionType t)) { |
1385 | Condition *c; | |
1386 | int triggered = -1; | |
1387 | ||
1388 | assert(u); | |
1389 | assert(to_string); | |
1390 | ||
1391 | /* If the condition list is empty, then it is true */ | |
1392 | if (!first) | |
1393 | return true; | |
1394 | ||
1395 | /* Otherwise, if all of the non-trigger conditions apply and | |
1396 | * if any of the trigger conditions apply (unless there are | |
1397 | * none) we return true */ | |
1398 | LIST_FOREACH(conditions, c, first) { | |
1399 | int r; | |
1400 | ||
1401 | r = condition_test(c); | |
1402 | if (r < 0) | |
f2341e0a LP |
1403 | log_unit_warning(u, |
1404 | "Couldn't determine result for %s=%s%s%s, assuming failed: %m", | |
49365733 LP |
1405 | to_string(c->type), |
1406 | c->trigger ? "|" : "", | |
1407 | c->negate ? "!" : "", | |
f2341e0a | 1408 | c->parameter); |
49365733 | 1409 | else |
f2341e0a LP |
1410 | log_unit_debug(u, |
1411 | "%s=%s%s%s %s.", | |
49365733 LP |
1412 | to_string(c->type), |
1413 | c->trigger ? "|" : "", | |
1414 | c->negate ? "!" : "", | |
1415 | c->parameter, | |
f2341e0a | 1416 | condition_result_to_string(c->result)); |
49365733 LP |
1417 | |
1418 | if (!c->trigger && r <= 0) | |
1419 | return false; | |
1420 | ||
1421 | if (c->trigger && triggered <= 0) | |
1422 | triggered = r > 0; | |
1423 | } | |
1424 | ||
1425 | return triggered != 0; | |
1426 | } | |
1427 | ||
9588bc32 | 1428 | static bool unit_condition_test(Unit *u) { |
90bbc946 LP |
1429 | assert(u); |
1430 | ||
ac155bb8 | 1431 | dual_timestamp_get(&u->condition_timestamp); |
49365733 | 1432 | u->condition_result = unit_condition_test_list(u, u->conditions, condition_type_to_string); |
90bbc946 | 1433 | |
ac155bb8 | 1434 | return u->condition_result; |
90bbc946 LP |
1435 | } |
1436 | ||
59fccdc5 LP |
1437 | static bool unit_assert_test(Unit *u) { |
1438 | assert(u); | |
1439 | ||
1440 | dual_timestamp_get(&u->assert_timestamp); | |
49365733 | 1441 | u->assert_result = unit_condition_test_list(u, u->asserts, assert_type_to_string); |
59fccdc5 LP |
1442 | |
1443 | return u->assert_result; | |
1444 | } | |
1445 | ||
df446f96 LP |
1446 | void unit_status_printf(Unit *u, const char *status, const char *unit_status_msg_format) { |
1447 | DISABLE_WARNING_FORMAT_NONLITERAL; | |
1448 | manager_status_printf(u->manager, STATUS_TYPE_NORMAL, status, unit_status_msg_format, unit_description(u)); | |
1449 | REENABLE_WARNING; | |
1450 | } | |
1451 | ||
44a6b1b6 | 1452 | _pure_ static const char* unit_get_status_message_format(Unit *u, JobType t) { |
877d54e9 | 1453 | const char *format; |
a85ca902 | 1454 | const UnitStatusMessageFormats *format_table; |
877d54e9 LP |
1455 | |
1456 | assert(u); | |
df446f96 | 1457 | assert(IN_SET(t, JOB_START, JOB_STOP, JOB_RELOAD)); |
877d54e9 | 1458 | |
b5bf308b | 1459 | if (t != JOB_RELOAD) { |
a85ca902 MS |
1460 | format_table = &UNIT_VTABLE(u)->status_message_formats; |
1461 | if (format_table) { | |
1462 | format = format_table->starting_stopping[t == JOB_STOP]; | |
1463 | if (format) | |
1464 | return format; | |
1465 | } | |
1466 | } | |
877d54e9 LP |
1467 | |
1468 | /* Return generic strings */ | |
1469 | if (t == JOB_START) | |
1470 | return "Starting %s."; | |
1471 | else if (t == JOB_STOP) | |
1472 | return "Stopping %s."; | |
b5bf308b | 1473 | else |
877d54e9 | 1474 | return "Reloading %s."; |
877d54e9 LP |
1475 | } |
1476 | ||
1477 | static void unit_status_print_starting_stopping(Unit *u, JobType t) { | |
1478 | const char *format; | |
1479 | ||
1480 | assert(u); | |
1481 | ||
df446f96 LP |
1482 | /* Reload status messages have traditionally not been printed to console. */ |
1483 | if (!IN_SET(t, JOB_START, JOB_STOP)) | |
1484 | return; | |
1485 | ||
877d54e9 | 1486 | format = unit_get_status_message_format(u, t); |
c6918296 | 1487 | |
bcfce235 | 1488 | DISABLE_WARNING_FORMAT_NONLITERAL; |
49b1d377 | 1489 | unit_status_printf(u, "", format); |
bcfce235 | 1490 | REENABLE_WARNING; |
c6918296 MS |
1491 | } |
1492 | ||
877d54e9 | 1493 | static void unit_status_log_starting_stopping_reloading(Unit *u, JobType t) { |
2b044526 | 1494 | const char *format, *mid; |
877d54e9 | 1495 | char buf[LINE_MAX]; |
877d54e9 LP |
1496 | |
1497 | assert(u); | |
1498 | ||
df446f96 | 1499 | if (!IN_SET(t, JOB_START, JOB_STOP, JOB_RELOAD)) |
877d54e9 LP |
1500 | return; |
1501 | ||
81270860 LP |
1502 | if (log_on_console()) |
1503 | return; | |
1504 | ||
877d54e9 LP |
1505 | /* We log status messages for all units and all operations. */ |
1506 | ||
a85ca902 | 1507 | format = unit_get_status_message_format(u, t); |
877d54e9 | 1508 | |
bcfce235 | 1509 | DISABLE_WARNING_FORMAT_NONLITERAL; |
e68eedbb | 1510 | snprintf(buf, sizeof buf, format, unit_description(u)); |
bcfce235 | 1511 | REENABLE_WARNING; |
877d54e9 | 1512 | |
2b044526 ZJS |
1513 | mid = t == JOB_START ? "MESSAGE_ID=" SD_MESSAGE_UNIT_STARTING_STR : |
1514 | t == JOB_STOP ? "MESSAGE_ID=" SD_MESSAGE_UNIT_STOPPING_STR : | |
1515 | "MESSAGE_ID=" SD_MESSAGE_UNIT_RELOADING_STR; | |
877d54e9 | 1516 | |
f2341e0a LP |
1517 | /* Note that we deliberately use LOG_MESSAGE() instead of |
1518 | * LOG_UNIT_MESSAGE() here, since this is supposed to mimic | |
1519 | * closely what is written to screen using the status output, | |
1520 | * which is supposed the highest level, friendliest output | |
1521 | * possible, which means we should avoid the low-level unit | |
1522 | * name. */ | |
1523 | log_struct(LOG_INFO, | |
f2341e0a | 1524 | LOG_MESSAGE("%s", buf), |
ba360bb0 ZJS |
1525 | LOG_UNIT_ID(u), |
1526 | mid, | |
f2341e0a | 1527 | NULL); |
877d54e9 | 1528 | } |
877d54e9 | 1529 | |
d1a34ae9 | 1530 | void unit_status_emit_starting_stopping_reloading(Unit *u, JobType t) { |
df446f96 LP |
1531 | assert(u); |
1532 | assert(t >= 0); | |
1533 | assert(t < _JOB_TYPE_MAX); | |
d1a34ae9 MS |
1534 | |
1535 | unit_status_log_starting_stopping_reloading(u, t); | |
df446f96 | 1536 | unit_status_print_starting_stopping(u, t); |
d1a34ae9 MS |
1537 | } |
1538 | ||
07299350 | 1539 | int unit_start_limit_test(Unit *u) { |
6bf0f408 LP |
1540 | assert(u); |
1541 | ||
1542 | if (ratelimit_test(&u->start_limit)) { | |
1543 | u->start_limit_hit = false; | |
1544 | return 0; | |
1545 | } | |
1546 | ||
1547 | log_unit_warning(u, "Start request repeated too quickly."); | |
1548 | u->start_limit_hit = true; | |
1549 | ||
87a47f99 | 1550 | return emergency_action(u->manager, u->start_limit_action, u->reboot_arg, "unit failed"); |
6bf0f408 LP |
1551 | } |
1552 | ||
c891efaf | 1553 | bool unit_shall_confirm_spawn(Unit *u) { |
631b676b | 1554 | assert(u); |
c891efaf FB |
1555 | |
1556 | if (manager_is_confirm_spawn_disabled(u->manager)) | |
1557 | return false; | |
1558 | ||
1559 | /* For some reasons units remaining in the same process group | |
1560 | * as PID 1 fail to acquire the console even if it's not used | |
1561 | * by any process. So skip the confirmation question for them. */ | |
1562 | return !unit_get_exec_context(u)->same_pgrp; | |
1563 | } | |
1564 | ||
631b676b LP |
1565 | static bool unit_verify_deps(Unit *u) { |
1566 | Unit *other; | |
1567 | Iterator j; | |
1568 | ||
1569 | assert(u); | |
1570 | ||
1571 | /* Checks whether all BindsTo= dependencies of this unit are fulfilled — if they are also combined with | |
1572 | * After=. We do not check Requires= or Requisite= here as they only should have an effect on the job | |
1573 | * processing, but do not have any effect afterwards. We don't check BindsTo= dependencies that are not used in | |
1574 | * conjunction with After= as for them any such check would make things entirely racy. */ | |
1575 | ||
1576 | SET_FOREACH(other, u->dependencies[UNIT_BINDS_TO], j) { | |
1577 | ||
1578 | if (!set_contains(u->dependencies[UNIT_AFTER], other)) | |
1579 | continue; | |
1580 | ||
1581 | if (!UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(other))) { | |
1582 | log_unit_notice(u, "Bound to unit %s, but unit isn't active.", other->id); | |
1583 | return false; | |
1584 | } | |
1585 | } | |
1586 | ||
1587 | return true; | |
1588 | } | |
1589 | ||
87f0e418 | 1590 | /* Errors: |
6bf0f408 LP |
1591 | * -EBADR: This unit type does not support starting. |
1592 | * -EALREADY: Unit is already started. | |
1593 | * -EAGAIN: An operation is already in progress. Retry later. | |
1594 | * -ECANCELED: Too many requests for now. | |
1595 | * -EPROTO: Assert failed | |
1596 | * -EINVAL: Unit not loaded | |
1597 | * -EOPNOTSUPP: Unit type not supported | |
631b676b | 1598 | * -ENOLINK: The necessary dependencies are not fulfilled. |
87f0e418 LP |
1599 | */ |
1600 | int unit_start(Unit *u) { | |
1601 | UnitActiveState state; | |
92ab323c | 1602 | Unit *following; |
87f0e418 LP |
1603 | |
1604 | assert(u); | |
1605 | ||
a82e5507 LP |
1606 | /* If this is already started, then this will succeed. Note |
1607 | * that this will even succeed if this unit is not startable | |
1608 | * by the user. This is relied on to detect when we need to | |
1609 | * wait for units and when waiting is finished. */ | |
87f0e418 LP |
1610 | state = unit_active_state(u); |
1611 | if (UNIT_IS_ACTIVE_OR_RELOADING(state)) | |
1612 | return -EALREADY; | |
1613 | ||
6bf0f408 LP |
1614 | /* Units that aren't loaded cannot be started */ |
1615 | if (u->load_state != UNIT_LOADED) | |
1616 | return -EINVAL; | |
1617 | ||
a82e5507 LP |
1618 | /* If the conditions failed, don't do anything at all. If we |
1619 | * already are activating this call might still be useful to | |
1620 | * speed up activation in case there is some hold-off time, | |
1621 | * but we don't want to recheck the condition in that case. */ | |
1622 | if (state != UNIT_ACTIVATING && | |
1623 | !unit_condition_test(u)) { | |
f2341e0a | 1624 | log_unit_debug(u, "Starting requested but condition failed. Not starting unit."); |
52661efd LP |
1625 | return -EALREADY; |
1626 | } | |
1627 | ||
59fccdc5 LP |
1628 | /* If the asserts failed, fail the entire job */ |
1629 | if (state != UNIT_ACTIVATING && | |
1630 | !unit_assert_test(u)) { | |
f2341e0a | 1631 | log_unit_notice(u, "Starting requested but asserts failed."); |
59fccdc5 LP |
1632 | return -EPROTO; |
1633 | } | |
1634 | ||
d11a7645 LP |
1635 | /* Units of types that aren't supported cannot be |
1636 | * started. Note that we do this test only after the condition | |
1637 | * checks, so that we rather return condition check errors | |
1638 | * (which are usually not considered a true failure) than "not | |
1639 | * supported" errors (which are considered a failure). | |
1640 | */ | |
1641 | if (!unit_supported(u)) | |
1642 | return -EOPNOTSUPP; | |
1643 | ||
631b676b LP |
1644 | /* Let's make sure that the deps really are in order before we start this. Normally the job engine should have |
1645 | * taken care of this already, but let's check this here again. After all, our dependencies might not be in | |
1646 | * effect anymore, due to a reload or due to a failed condition. */ | |
1647 | if (!unit_verify_deps(u)) | |
1648 | return -ENOLINK; | |
1649 | ||
92ab323c | 1650 | /* Forward to the main object, if we aren't it. */ |
52990c2e ZJS |
1651 | following = unit_following(u); |
1652 | if (following) { | |
f2341e0a | 1653 | log_unit_debug(u, "Redirecting start request from %s to %s.", u->id, following->id); |
92ab323c LP |
1654 | return unit_start(following); |
1655 | } | |
1656 | ||
1657 | /* If it is stopped, but we cannot start it, then fail */ | |
1658 | if (!UNIT_VTABLE(u)->start) | |
1659 | return -EBADR; | |
1660 | ||
87f0e418 LP |
1661 | /* We don't suppress calls to ->start() here when we are |
1662 | * already starting, to allow this request to be used as a | |
1663 | * "hurry up" call, for example when the unit is in some "auto | |
1664 | * restart" state where it waits for a holdoff timer to elapse | |
1665 | * before it will start again. */ | |
1666 | ||
c1e1601e | 1667 | unit_add_to_dbus_queue(u); |
9e58ff9c | 1668 | |
d1a34ae9 | 1669 | return UNIT_VTABLE(u)->start(u); |
87f0e418 LP |
1670 | } |
1671 | ||
1672 | bool unit_can_start(Unit *u) { | |
1673 | assert(u); | |
1674 | ||
8ff4d2ab LP |
1675 | if (u->load_state != UNIT_LOADED) |
1676 | return false; | |
1677 | ||
1678 | if (!unit_supported(u)) | |
1679 | return false; | |
1680 | ||
87f0e418 LP |
1681 | return !!UNIT_VTABLE(u)->start; |
1682 | } | |
1683 | ||
2528a7a6 LP |
1684 | bool unit_can_isolate(Unit *u) { |
1685 | assert(u); | |
1686 | ||
1687 | return unit_can_start(u) && | |
ac155bb8 | 1688 | u->allow_isolate; |
2528a7a6 LP |
1689 | } |
1690 | ||
87f0e418 LP |
1691 | /* Errors: |
1692 | * -EBADR: This unit type does not support stopping. | |
1693 | * -EALREADY: Unit is already stopped. | |
1694 | * -EAGAIN: An operation is already in progress. Retry later. | |
1695 | */ | |
1696 | int unit_stop(Unit *u) { | |
1697 | UnitActiveState state; | |
92ab323c | 1698 | Unit *following; |
87f0e418 LP |
1699 | |
1700 | assert(u); | |
1701 | ||
87f0e418 | 1702 | state = unit_active_state(u); |
fdf20a31 | 1703 | if (UNIT_IS_INACTIVE_OR_FAILED(state)) |
87f0e418 LP |
1704 | return -EALREADY; |
1705 | ||
0faacd47 LP |
1706 | following = unit_following(u); |
1707 | if (following) { | |
f2341e0a | 1708 | log_unit_debug(u, "Redirecting stop request from %s to %s.", u->id, following->id); |
92ab323c LP |
1709 | return unit_stop(following); |
1710 | } | |
1711 | ||
7898b0cf LP |
1712 | if (!UNIT_VTABLE(u)->stop) |
1713 | return -EBADR; | |
1714 | ||
c1e1601e | 1715 | unit_add_to_dbus_queue(u); |
9e58ff9c | 1716 | |
d1a34ae9 | 1717 | return UNIT_VTABLE(u)->stop(u); |
87f0e418 LP |
1718 | } |
1719 | ||
f5869324 LP |
1720 | bool unit_can_stop(Unit *u) { |
1721 | assert(u); | |
1722 | ||
1723 | if (!unit_supported(u)) | |
1724 | return false; | |
1725 | ||
1726 | if (u->perpetual) | |
1727 | return false; | |
1728 | ||
1729 | return !!UNIT_VTABLE(u)->stop; | |
1730 | } | |
1731 | ||
87f0e418 LP |
1732 | /* Errors: |
1733 | * -EBADR: This unit type does not support reloading. | |
1734 | * -ENOEXEC: Unit is not started. | |
1735 | * -EAGAIN: An operation is already in progress. Retry later. | |
1736 | */ | |
1737 | int unit_reload(Unit *u) { | |
1738 | UnitActiveState state; | |
92ab323c | 1739 | Unit *following; |
87f0e418 LP |
1740 | |
1741 | assert(u); | |
1742 | ||
ac155bb8 | 1743 | if (u->load_state != UNIT_LOADED) |
6124958c LP |
1744 | return -EINVAL; |
1745 | ||
87f0e418 LP |
1746 | if (!unit_can_reload(u)) |
1747 | return -EBADR; | |
1748 | ||
1749 | state = unit_active_state(u); | |
e364ad06 | 1750 | if (state == UNIT_RELOADING) |
87f0e418 LP |
1751 | return -EALREADY; |
1752 | ||
6a371e23 | 1753 | if (state != UNIT_ACTIVE) { |
f2341e0a | 1754 | log_unit_warning(u, "Unit cannot be reloaded because it is inactive."); |
87f0e418 | 1755 | return -ENOEXEC; |
6a371e23 | 1756 | } |
87f0e418 | 1757 | |
e48614c4 ZJS |
1758 | following = unit_following(u); |
1759 | if (following) { | |
f2341e0a | 1760 | log_unit_debug(u, "Redirecting reload request from %s to %s.", u->id, following->id); |
92ab323c LP |
1761 | return unit_reload(following); |
1762 | } | |
1763 | ||
c1e1601e | 1764 | unit_add_to_dbus_queue(u); |
82a2b6bb | 1765 | |
f54bcca5 JR |
1766 | if (!UNIT_VTABLE(u)->reload) { |
1767 | /* Unit doesn't have a reload function, but we need to propagate the reload anyway */ | |
1768 | unit_notify(u, unit_active_state(u), unit_active_state(u), true); | |
1769 | return 0; | |
1770 | } | |
1771 | ||
d1a34ae9 | 1772 | return UNIT_VTABLE(u)->reload(u); |
87f0e418 LP |
1773 | } |
1774 | ||
1775 | bool unit_can_reload(Unit *u) { | |
1776 | assert(u); | |
1777 | ||
f54bcca5 JR |
1778 | if (UNIT_VTABLE(u)->can_reload) |
1779 | return UNIT_VTABLE(u)->can_reload(u); | |
87f0e418 | 1780 | |
f54bcca5 | 1781 | if (!set_isempty(u->dependencies[UNIT_PROPAGATES_RELOAD_TO])) |
87f0e418 LP |
1782 | return true; |
1783 | ||
f54bcca5 | 1784 | return UNIT_VTABLE(u)->reload; |
87f0e418 LP |
1785 | } |
1786 | ||
b4a16b7b | 1787 | static void unit_check_unneeded(Unit *u) { |
be7d9ff7 | 1788 | |
4afd3348 | 1789 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
4bd29fe5 | 1790 | |
be7d9ff7 LP |
1791 | static const UnitDependency needed_dependencies[] = { |
1792 | UNIT_REQUIRED_BY, | |
084918ba | 1793 | UNIT_REQUISITE_OF, |
be7d9ff7 LP |
1794 | UNIT_WANTED_BY, |
1795 | UNIT_BOUND_BY, | |
1796 | }; | |
1797 | ||
f3bff0eb | 1798 | Unit *other; |
be7d9ff7 LP |
1799 | Iterator i; |
1800 | unsigned j; | |
1801 | int r; | |
f3bff0eb LP |
1802 | |
1803 | assert(u); | |
1804 | ||
1805 | /* If this service shall be shut down when unneeded then do | |
1806 | * so. */ | |
1807 | ||
ac155bb8 | 1808 | if (!u->stop_when_unneeded) |
f3bff0eb LP |
1809 | return; |
1810 | ||
1811 | if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) | |
1812 | return; | |
1813 | ||
be7d9ff7 | 1814 | for (j = 0; j < ELEMENTSOF(needed_dependencies); j++) |
f3b85044 | 1815 | SET_FOREACH(other, u->dependencies[needed_dependencies[j]], i) |
be7d9ff7 LP |
1816 | if (unit_active_or_pending(other)) |
1817 | return; | |
b81884e7 | 1818 | |
595bfe7d | 1819 | /* If stopping a unit fails continuously we might enter a stop |
bea355da LP |
1820 | * loop here, hence stop acting on the service being |
1821 | * unnecessary after a while. */ | |
67bfdc97 | 1822 | if (!ratelimit_test(&u->auto_stop_ratelimit)) { |
bea355da LP |
1823 | log_unit_warning(u, "Unit not needed anymore, but not stopping since we tried this too often recently."); |
1824 | return; | |
1825 | } | |
1826 | ||
f2341e0a | 1827 | log_unit_info(u, "Unit not needed anymore. Stopping."); |
f3bff0eb LP |
1828 | |
1829 | /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */ | |
4bd29fe5 | 1830 | r = manager_add_job(u->manager, JOB_STOP, u, JOB_FAIL, &error, NULL); |
be7d9ff7 | 1831 | if (r < 0) |
4bd29fe5 | 1832 | log_unit_warning_errno(u, r, "Failed to enqueue stop job, ignoring: %s", bus_error_message(&error, r)); |
f3bff0eb LP |
1833 | } |
1834 | ||
ff502445 | 1835 | static void unit_check_binds_to(Unit *u) { |
4afd3348 | 1836 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
ff502445 LP |
1837 | bool stop = false; |
1838 | Unit *other; | |
1839 | Iterator i; | |
67bfdc97 | 1840 | int r; |
ff502445 LP |
1841 | |
1842 | assert(u); | |
1843 | ||
1844 | if (u->job) | |
1845 | return; | |
1846 | ||
1847 | if (unit_active_state(u) != UNIT_ACTIVE) | |
1848 | return; | |
1849 | ||
1850 | SET_FOREACH(other, u->dependencies[UNIT_BINDS_TO], i) { | |
1851 | if (other->job) | |
1852 | continue; | |
13ddc3fc ZJS |
1853 | |
1854 | if (!other->coldplugged) | |
1855 | /* We might yet create a job for the other unit… */ | |
1856 | continue; | |
ff502445 LP |
1857 | |
1858 | if (!UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other))) | |
1859 | continue; | |
1860 | ||
1861 | stop = true; | |
98f738b6 | 1862 | break; |
ff502445 LP |
1863 | } |
1864 | ||
1865 | if (!stop) | |
1866 | return; | |
1867 | ||
595bfe7d | 1868 | /* If stopping a unit fails continuously we might enter a stop |
67bfdc97 LP |
1869 | * loop here, hence stop acting on the service being |
1870 | * unnecessary after a while. */ | |
1871 | if (!ratelimit_test(&u->auto_stop_ratelimit)) { | |
1872 | log_unit_warning(u, "Unit is bound to inactive unit %s, but not stopping since we tried this too often recently.", other->id); | |
1873 | return; | |
1874 | } | |
1875 | ||
98f738b6 | 1876 | assert(other); |
f2341e0a | 1877 | log_unit_info(u, "Unit is bound to inactive unit %s. Stopping, too.", other->id); |
ff502445 LP |
1878 | |
1879 | /* A unit we need to run is gone. Sniff. Let's stop this. */ | |
4bd29fe5 | 1880 | r = manager_add_job(u->manager, JOB_STOP, u, JOB_FAIL, &error, NULL); |
67bfdc97 | 1881 | if (r < 0) |
4bd29fe5 | 1882 | log_unit_warning_errno(u, r, "Failed to enqueue stop job, ignoring: %s", bus_error_message(&error, r)); |
ff502445 LP |
1883 | } |
1884 | ||
87f0e418 LP |
1885 | static void retroactively_start_dependencies(Unit *u) { |
1886 | Iterator i; | |
1887 | Unit *other; | |
1888 | ||
1889 | assert(u); | |
1890 | assert(UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))); | |
1891 | ||
ac155bb8 MS |
1892 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRES], i) |
1893 | if (!set_get(u->dependencies[UNIT_AFTER], other) && | |
b81884e7 | 1894 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
4bd29fe5 | 1895 | manager_add_job(u->manager, JOB_START, other, JOB_REPLACE, NULL, NULL); |
b81884e7 | 1896 | |
7f2cddae | 1897 | SET_FOREACH(other, u->dependencies[UNIT_BINDS_TO], i) |
ac155bb8 | 1898 | if (!set_get(u->dependencies[UNIT_AFTER], other) && |
b81884e7 | 1899 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
4bd29fe5 | 1900 | manager_add_job(u->manager, JOB_START, other, JOB_REPLACE, NULL, NULL); |
87f0e418 | 1901 | |
ac155bb8 MS |
1902 | SET_FOREACH(other, u->dependencies[UNIT_WANTS], i) |
1903 | if (!set_get(u->dependencies[UNIT_AFTER], other) && | |
b81884e7 | 1904 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
4bd29fe5 | 1905 | manager_add_job(u->manager, JOB_START, other, JOB_FAIL, NULL, NULL); |
87f0e418 | 1906 | |
ac155bb8 | 1907 | SET_FOREACH(other, u->dependencies[UNIT_CONFLICTS], i) |
b81884e7 | 1908 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
4bd29fe5 | 1909 | manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, NULL, NULL); |
69dd2852 | 1910 | |
ac155bb8 | 1911 | SET_FOREACH(other, u->dependencies[UNIT_CONFLICTED_BY], i) |
b81884e7 | 1912 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
4bd29fe5 | 1913 | manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, NULL, NULL); |
87f0e418 LP |
1914 | } |
1915 | ||
1916 | static void retroactively_stop_dependencies(Unit *u) { | |
1917 | Iterator i; | |
1918 | Unit *other; | |
1919 | ||
1920 | assert(u); | |
1921 | assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))); | |
1922 | ||
b81884e7 | 1923 | /* Pull down units which are bound to us recursively if enabled */ |
ac155bb8 | 1924 | SET_FOREACH(other, u->dependencies[UNIT_BOUND_BY], i) |
b81884e7 | 1925 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
4bd29fe5 | 1926 | manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, NULL, NULL); |
cd0504d0 MS |
1927 | } |
1928 | ||
1929 | static void check_unneeded_dependencies(Unit *u) { | |
1930 | Iterator i; | |
1931 | Unit *other; | |
1932 | ||
1933 | assert(u); | |
1934 | assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))); | |
f3bff0eb LP |
1935 | |
1936 | /* Garbage collect services that might not be needed anymore, if enabled */ | |
ac155bb8 | 1937 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRES], i) |
87f0e418 | 1938 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1939 | unit_check_unneeded(other); |
ac155bb8 | 1940 | SET_FOREACH(other, u->dependencies[UNIT_WANTS], i) |
f3bff0eb | 1941 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1942 | unit_check_unneeded(other); |
ac155bb8 | 1943 | SET_FOREACH(other, u->dependencies[UNIT_REQUISITE], i) |
f3bff0eb | 1944 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1945 | unit_check_unneeded(other); |
7f2cddae | 1946 | SET_FOREACH(other, u->dependencies[UNIT_BINDS_TO], i) |
b81884e7 LP |
1947 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
1948 | unit_check_unneeded(other); | |
87f0e418 LP |
1949 | } |
1950 | ||
3ecaa09b | 1951 | void unit_start_on_failure(Unit *u) { |
c0daa706 LP |
1952 | Unit *other; |
1953 | Iterator i; | |
1954 | ||
1955 | assert(u); | |
1956 | ||
ac155bb8 | 1957 | if (set_size(u->dependencies[UNIT_ON_FAILURE]) <= 0) |
222ae6a8 LP |
1958 | return; |
1959 | ||
f2341e0a | 1960 | log_unit_info(u, "Triggering OnFailure= dependencies."); |
222ae6a8 | 1961 | |
ac155bb8 | 1962 | SET_FOREACH(other, u->dependencies[UNIT_ON_FAILURE], i) { |
222ae6a8 LP |
1963 | int r; |
1964 | ||
4bd29fe5 | 1965 | r = manager_add_job(u->manager, JOB_START, other, u->on_failure_job_mode, NULL, NULL); |
c1b6628d | 1966 | if (r < 0) |
f2341e0a | 1967 | log_unit_error_errno(u, r, "Failed to enqueue OnFailure= job: %m"); |
222ae6a8 | 1968 | } |
c0daa706 LP |
1969 | } |
1970 | ||
3ecaa09b LP |
1971 | void unit_trigger_notify(Unit *u) { |
1972 | Unit *other; | |
1973 | Iterator i; | |
1974 | ||
1975 | assert(u); | |
1976 | ||
1977 | SET_FOREACH(other, u->dependencies[UNIT_TRIGGERED_BY], i) | |
1978 | if (UNIT_VTABLE(other)->trigger_notify) | |
1979 | UNIT_VTABLE(other)->trigger_notify(other, u); | |
1980 | } | |
1981 | ||
e2f3b44c | 1982 | void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_success) { |
546ac4f0 | 1983 | Manager *m; |
7e6e7b06 | 1984 | bool unexpected; |
a096ed36 | 1985 | |
87f0e418 LP |
1986 | assert(u); |
1987 | assert(os < _UNIT_ACTIVE_STATE_MAX); | |
1988 | assert(ns < _UNIT_ACTIVE_STATE_MAX); | |
87f0e418 | 1989 | |
8e471ccd LP |
1990 | /* Note that this is called for all low-level state changes, |
1991 | * even if they might map to the same high-level | |
865cc19a | 1992 | * UnitActiveState! That means that ns == os is an expected |
c5315881 | 1993 | * behavior here. For example: if a mount point is remounted |
cd6d0a45 | 1994 | * this function will be called too! */ |
87f0e418 | 1995 | |
546ac4f0 MS |
1996 | m = u->manager; |
1997 | ||
f755e3b7 | 1998 | /* Update timestamps for state changes */ |
2c289ea8 | 1999 | if (!MANAGER_IS_RELOADING(m)) { |
a483fb59 | 2000 | dual_timestamp_get(&u->state_change_timestamp); |
173e3821 | 2001 | |
bdbf9951 | 2002 | if (UNIT_IS_INACTIVE_OR_FAILED(os) && !UNIT_IS_INACTIVE_OR_FAILED(ns)) |
a483fb59 | 2003 | u->inactive_exit_timestamp = u->state_change_timestamp; |
bdbf9951 | 2004 | else if (!UNIT_IS_INACTIVE_OR_FAILED(os) && UNIT_IS_INACTIVE_OR_FAILED(ns)) |
a483fb59 | 2005 | u->inactive_enter_timestamp = u->state_change_timestamp; |
bdbf9951 LP |
2006 | |
2007 | if (!UNIT_IS_ACTIVE_OR_RELOADING(os) && UNIT_IS_ACTIVE_OR_RELOADING(ns)) | |
a483fb59 | 2008 | u->active_enter_timestamp = u->state_change_timestamp; |
bdbf9951 | 2009 | else if (UNIT_IS_ACTIVE_OR_RELOADING(os) && !UNIT_IS_ACTIVE_OR_RELOADING(ns)) |
a483fb59 | 2010 | u->active_exit_timestamp = u->state_change_timestamp; |
bdbf9951 | 2011 | } |
87f0e418 | 2012 | |
865cc19a | 2013 | /* Keep track of failed units */ |
5269eb6b | 2014 | (void) manager_update_failed_units(u->manager, u, ns == UNIT_FAILED); |
f755e3b7 LP |
2015 | |
2016 | /* Make sure the cgroup is always removed when we become inactive */ | |
fdf20a31 | 2017 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
efdb0237 | 2018 | unit_prune_cgroup(u); |
fb385181 | 2019 | |
9cd86184 | 2020 | /* Note that this doesn't apply to RemainAfterExit services exiting |
6f285378 | 2021 | * successfully, since there's no change of state in that case. Which is |
9cd86184 | 2022 | * why it is handled in service_set_state() */ |
7ed9f6cd | 2023 | if (UNIT_IS_INACTIVE_OR_FAILED(os) != UNIT_IS_INACTIVE_OR_FAILED(ns)) { |
b33918c2 LP |
2024 | ExecContext *ec; |
2025 | ||
2026 | ec = unit_get_exec_context(u); | |
7ed9f6cd | 2027 | if (ec && exec_context_may_touch_console(ec)) { |
31a7eb86 | 2028 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) { |
313cefa1 | 2029 | m->n_on_console--; |
31a7eb86 ZJS |
2030 | |
2031 | if (m->n_on_console == 0) | |
2032 | /* unset no_console_output flag, since the console is free */ | |
2f38577f | 2033 | m->no_console_output = false; |
31a7eb86 | 2034 | } else |
313cefa1 | 2035 | m->n_on_console++; |
7ed9f6cd MS |
2036 | } |
2037 | } | |
2038 | ||
ac155bb8 | 2039 | if (u->job) { |
7e6e7b06 | 2040 | unexpected = false; |
87f0e418 | 2041 | |
ac155bb8 | 2042 | if (u->job->state == JOB_WAITING) |
87f0e418 LP |
2043 | |
2044 | /* So we reached a different state for this | |
2045 | * job. Let's see if we can run it now if it | |
2046 | * failed previously due to EAGAIN. */ | |
ac155bb8 | 2047 | job_add_to_run_queue(u->job); |
87f0e418 | 2048 | |
b410e6b9 | 2049 | /* Let's check whether this state change constitutes a |
35b8ca3a | 2050 | * finished job, or maybe contradicts a running job and |
b410e6b9 | 2051 | * hence needs to invalidate jobs. */ |
87f0e418 | 2052 | |
ac155bb8 | 2053 | switch (u->job->type) { |
87f0e418 | 2054 | |
b410e6b9 LP |
2055 | case JOB_START: |
2056 | case JOB_VERIFY_ACTIVE: | |
87f0e418 | 2057 | |
b410e6b9 | 2058 | if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) |
833f92ad | 2059 | job_finish_and_invalidate(u->job, JOB_DONE, true, false); |
ac155bb8 | 2060 | else if (u->job->state == JOB_RUNNING && ns != UNIT_ACTIVATING) { |
b410e6b9 | 2061 | unexpected = true; |
41b02ec7 | 2062 | |
fdf20a31 | 2063 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
833f92ad | 2064 | job_finish_and_invalidate(u->job, ns == UNIT_FAILED ? JOB_FAILED : JOB_DONE, true, false); |
b410e6b9 | 2065 | } |
87f0e418 | 2066 | |
b410e6b9 | 2067 | break; |
87f0e418 | 2068 | |
b410e6b9 LP |
2069 | case JOB_RELOAD: |
2070 | case JOB_RELOAD_OR_START: | |
3282591d | 2071 | case JOB_TRY_RELOAD: |
87f0e418 | 2072 | |
ac155bb8 | 2073 | if (u->job->state == JOB_RUNNING) { |
a096ed36 | 2074 | if (ns == UNIT_ACTIVE) |
833f92ad | 2075 | job_finish_and_invalidate(u->job, reload_success ? JOB_DONE : JOB_FAILED, true, false); |
032ff4af | 2076 | else if (ns != UNIT_ACTIVATING && ns != UNIT_RELOADING) { |
a096ed36 | 2077 | unexpected = true; |
41b02ec7 | 2078 | |
fdf20a31 | 2079 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
833f92ad | 2080 | job_finish_and_invalidate(u->job, ns == UNIT_FAILED ? JOB_FAILED : JOB_DONE, true, false); |
a096ed36 | 2081 | } |
b410e6b9 | 2082 | } |
87f0e418 | 2083 | |
b410e6b9 | 2084 | break; |
87f0e418 | 2085 | |
b410e6b9 LP |
2086 | case JOB_STOP: |
2087 | case JOB_RESTART: | |
2088 | case JOB_TRY_RESTART: | |
87f0e418 | 2089 | |
fdf20a31 | 2090 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
833f92ad | 2091 | job_finish_and_invalidate(u->job, JOB_DONE, true, false); |
ac155bb8 | 2092 | else if (u->job->state == JOB_RUNNING && ns != UNIT_DEACTIVATING) { |
b410e6b9 | 2093 | unexpected = true; |
833f92ad | 2094 | job_finish_and_invalidate(u->job, JOB_FAILED, true, false); |
b410e6b9 | 2095 | } |
87f0e418 | 2096 | |
b410e6b9 | 2097 | break; |
87f0e418 | 2098 | |
b410e6b9 LP |
2099 | default: |
2100 | assert_not_reached("Job type unknown"); | |
87f0e418 | 2101 | } |
87f0e418 | 2102 | |
7e6e7b06 LP |
2103 | } else |
2104 | unexpected = true; | |
2105 | ||
2c289ea8 | 2106 | if (!MANAGER_IS_RELOADING(m)) { |
f3bff0eb | 2107 | |
bdbf9951 LP |
2108 | /* If this state change happened without being |
2109 | * requested by a job, then let's retroactively start | |
2110 | * or stop dependencies. We skip that step when | |
2111 | * deserializing, since we don't want to create any | |
2112 | * additional jobs just because something is already | |
2113 | * activated. */ | |
2114 | ||
2115 | if (unexpected) { | |
2116 | if (UNIT_IS_INACTIVE_OR_FAILED(os) && UNIT_IS_ACTIVE_OR_ACTIVATING(ns)) | |
2117 | retroactively_start_dependencies(u); | |
2118 | else if (UNIT_IS_ACTIVE_OR_ACTIVATING(os) && UNIT_IS_INACTIVE_OR_DEACTIVATING(ns)) | |
2119 | retroactively_stop_dependencies(u); | |
2120 | } | |
5de9682c | 2121 | |
cd0504d0 | 2122 | /* stop unneeded units regardless if going down was expected or not */ |
b33918c2 | 2123 | if (UNIT_IS_INACTIVE_OR_DEACTIVATING(ns)) |
cd0504d0 MS |
2124 | check_unneeded_dependencies(u); |
2125 | ||
bdbf9951 | 2126 | if (ns != os && ns == UNIT_FAILED) { |
f2341e0a | 2127 | log_unit_notice(u, "Unit entered failed state."); |
3ecaa09b | 2128 | unit_start_on_failure(u); |
cd6d0a45 | 2129 | } |
3b2775c5 | 2130 | } |
e537352b | 2131 | |
3b2775c5 LP |
2132 | /* Some names are special */ |
2133 | if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) { | |
2134 | ||
2135 | if (unit_has_name(u, SPECIAL_DBUS_SERVICE)) | |
865cc19a | 2136 | /* The bus might have just become available, |
3b2775c5 LP |
2137 | * hence try to connect to it, if we aren't |
2138 | * yet connected. */ | |
546ac4f0 | 2139 | bus_init(m, true); |
3b2775c5 | 2140 | |
ac155bb8 | 2141 | if (u->type == UNIT_SERVICE && |
3b2775c5 | 2142 | !UNIT_IS_ACTIVE_OR_RELOADING(os) && |
2c289ea8 | 2143 | !MANAGER_IS_RELOADING(m)) { |
3b2775c5 | 2144 | /* Write audit record if we have just finished starting up */ |
546ac4f0 | 2145 | manager_send_unit_audit(m, u, AUDIT_SERVICE_START, true); |
ac155bb8 | 2146 | u->in_audit = true; |
3b2775c5 | 2147 | } |
e983b760 | 2148 | |
3b2775c5 | 2149 | if (!UNIT_IS_ACTIVE_OR_RELOADING(os)) |
546ac4f0 | 2150 | manager_send_unit_plymouth(m, u); |
bdbf9951 | 2151 | |
3b2775c5 | 2152 | } else { |
bdbf9951 | 2153 | |
3b2775c5 LP |
2154 | /* We don't care about D-Bus here, since we'll get an |
2155 | * asynchronous notification for it anyway. */ | |
cd6d0a45 | 2156 | |
ac155bb8 | 2157 | if (u->type == UNIT_SERVICE && |
3b2775c5 LP |
2158 | UNIT_IS_INACTIVE_OR_FAILED(ns) && |
2159 | !UNIT_IS_INACTIVE_OR_FAILED(os) && | |
2c289ea8 | 2160 | !MANAGER_IS_RELOADING(m)) { |
4927fcae | 2161 | |
3b2775c5 LP |
2162 | /* Hmm, if there was no start record written |
2163 | * write it now, so that we always have a nice | |
2164 | * pair */ | |
ac155bb8 | 2165 | if (!u->in_audit) { |
546ac4f0 | 2166 | manager_send_unit_audit(m, u, AUDIT_SERVICE_START, ns == UNIT_INACTIVE); |
cd6d0a45 | 2167 | |
3b2775c5 | 2168 | if (ns == UNIT_INACTIVE) |
546ac4f0 | 2169 | manager_send_unit_audit(m, u, AUDIT_SERVICE_STOP, true); |
3b2775c5 LP |
2170 | } else |
2171 | /* Write audit record if we have just finished shutting down */ | |
546ac4f0 | 2172 | manager_send_unit_audit(m, u, AUDIT_SERVICE_STOP, ns == UNIT_INACTIVE); |
bdbf9951 | 2173 | |
ac155bb8 | 2174 | u->in_audit = false; |
cd6d0a45 | 2175 | } |
f278026d LP |
2176 | } |
2177 | ||
546ac4f0 | 2178 | manager_recheck_journal(m); |
3ecaa09b | 2179 | unit_trigger_notify(u); |
3b2775c5 | 2180 | |
2c289ea8 | 2181 | if (!MANAGER_IS_RELOADING(u->manager)) { |
ff502445 LP |
2182 | /* Maybe we finished startup and are now ready for |
2183 | * being stopped because unneeded? */ | |
bf6dcfa6 | 2184 | unit_check_unneeded(u); |
c1e1601e | 2185 | |
ff502445 LP |
2186 | /* Maybe we finished startup, but something we needed |
2187 | * has vanished? Let's die then. (This happens when | |
2188 | * something BindsTo= to a Type=oneshot unit, as these | |
2189 | * units go directly from starting to inactive, | |
2190 | * without ever entering started.) */ | |
2191 | unit_check_binds_to(u); | |
2192 | } | |
2193 | ||
c1e1601e | 2194 | unit_add_to_dbus_queue(u); |
701cc384 | 2195 | unit_add_to_gc_queue(u); |
87f0e418 LP |
2196 | } |
2197 | ||
87f0e418 | 2198 | int unit_watch_pid(Unit *u, pid_t pid) { |
a911bb9a LP |
2199 | int q, r; |
2200 | ||
87f0e418 LP |
2201 | assert(u); |
2202 | assert(pid >= 1); | |
2203 | ||
5ba6985b LP |
2204 | /* Watch a specific PID. We only support one or two units |
2205 | * watching each PID for now, not more. */ | |
2206 | ||
d5099efc | 2207 | r = set_ensure_allocated(&u->pids, NULL); |
5ba6985b LP |
2208 | if (r < 0) |
2209 | return r; | |
2210 | ||
d5099efc | 2211 | r = hashmap_ensure_allocated(&u->manager->watch_pids1, NULL); |
a911bb9a LP |
2212 | if (r < 0) |
2213 | return r; | |
2214 | ||
fea72cc0 | 2215 | r = hashmap_put(u->manager->watch_pids1, PID_TO_PTR(pid), u); |
5ba6985b | 2216 | if (r == -EEXIST) { |
d5099efc | 2217 | r = hashmap_ensure_allocated(&u->manager->watch_pids2, NULL); |
5ba6985b LP |
2218 | if (r < 0) |
2219 | return r; | |
05e343b7 | 2220 | |
fea72cc0 | 2221 | r = hashmap_put(u->manager->watch_pids2, PID_TO_PTR(pid), u); |
5ba6985b | 2222 | } |
a911bb9a | 2223 | |
fea72cc0 | 2224 | q = set_put(u->pids, PID_TO_PTR(pid)); |
a911bb9a LP |
2225 | if (q < 0) |
2226 | return q; | |
2227 | ||
2228 | return r; | |
87f0e418 LP |
2229 | } |
2230 | ||
2231 | void unit_unwatch_pid(Unit *u, pid_t pid) { | |
2232 | assert(u); | |
2233 | assert(pid >= 1); | |
2234 | ||
fea72cc0 LP |
2235 | (void) hashmap_remove_value(u->manager->watch_pids1, PID_TO_PTR(pid), u); |
2236 | (void) hashmap_remove_value(u->manager->watch_pids2, PID_TO_PTR(pid), u); | |
2237 | (void) set_remove(u->pids, PID_TO_PTR(pid)); | |
a911bb9a LP |
2238 | } |
2239 | ||
bd44e61b LP |
2240 | void unit_unwatch_all_pids(Unit *u) { |
2241 | assert(u); | |
2242 | ||
2243 | while (!set_isempty(u->pids)) | |
fea72cc0 | 2244 | unit_unwatch_pid(u, PTR_TO_PID(set_first(u->pids))); |
bd44e61b | 2245 | |
efdb0237 | 2246 | u->pids = set_free(u->pids); |
a911bb9a LP |
2247 | } |
2248 | ||
2249 | void unit_tidy_watch_pids(Unit *u, pid_t except1, pid_t except2) { | |
2250 | Iterator i; | |
2251 | void *e; | |
2252 | ||
2253 | assert(u); | |
2254 | ||
2255 | /* Cleans dead PIDs from our list */ | |
2256 | ||
2257 | SET_FOREACH(e, u->pids, i) { | |
fea72cc0 | 2258 | pid_t pid = PTR_TO_PID(e); |
a911bb9a LP |
2259 | |
2260 | if (pid == except1 || pid == except2) | |
2261 | continue; | |
2262 | ||
9f5650ae | 2263 | if (!pid_is_unwaited(pid)) |
bd44e61b | 2264 | unit_unwatch_pid(u, pid); |
a911bb9a | 2265 | } |
87f0e418 LP |
2266 | } |
2267 | ||
87f0e418 LP |
2268 | bool unit_job_is_applicable(Unit *u, JobType j) { |
2269 | assert(u); | |
2270 | assert(j >= 0 && j < _JOB_TYPE_MAX); | |
2271 | ||
2272 | switch (j) { | |
2273 | ||
2274 | case JOB_VERIFY_ACTIVE: | |
2275 | case JOB_START: | |
e0209d83 | 2276 | case JOB_NOP: |
f5869324 LP |
2277 | /* Note that we don't check unit_can_start() here. That's because .device units and suchlike are not |
2278 | * startable by us but may appear due to external events, and it thus makes sense to permit enqueing | |
2279 | * jobs for it. */ | |
87f0e418 LP |
2280 | return true; |
2281 | ||
f5869324 LP |
2282 | case JOB_STOP: |
2283 | /* Similar as above. However, perpetual units can never be stopped (neither explicitly nor due to | |
2284 | * external events), hence it makes no sense to permit enqueing such a request either. */ | |
2285 | return !u->perpetual; | |
2286 | ||
87f0e418 LP |
2287 | case JOB_RESTART: |
2288 | case JOB_TRY_RESTART: | |
f5869324 | 2289 | return unit_can_stop(u) && unit_can_start(u); |
87f0e418 LP |
2290 | |
2291 | case JOB_RELOAD: | |
3282591d | 2292 | case JOB_TRY_RELOAD: |
87f0e418 LP |
2293 | return unit_can_reload(u); |
2294 | ||
2295 | case JOB_RELOAD_OR_START: | |
2296 | return unit_can_reload(u) && unit_can_start(u); | |
2297 | ||
2298 | default: | |
2299 | assert_not_reached("Invalid job type"); | |
2300 | } | |
2301 | } | |
2302 | ||
f2341e0a LP |
2303 | static void maybe_warn_about_dependency(Unit *u, const char *other, UnitDependency dependency) { |
2304 | assert(u); | |
d1fab3fe | 2305 | |
f2341e0a LP |
2306 | /* Only warn about some unit types */ |
2307 | if (!IN_SET(dependency, UNIT_CONFLICTS, UNIT_CONFLICTED_BY, UNIT_BEFORE, UNIT_AFTER, UNIT_ON_FAILURE, UNIT_TRIGGERS, UNIT_TRIGGERED_BY)) | |
2308 | return; | |
3f3cc397 | 2309 | |
f2341e0a LP |
2310 | if (streq_ptr(u->id, other)) |
2311 | log_unit_warning(u, "Dependency %s=%s dropped", unit_dependency_to_string(dependency), u->id); | |
2312 | else | |
2313 | log_unit_warning(u, "Dependency %s=%s dropped, merged into %s", unit_dependency_to_string(dependency), strna(other), u->id); | |
d1fab3fe ZJS |
2314 | } |
2315 | ||
701cc384 | 2316 | int unit_add_dependency(Unit *u, UnitDependency d, Unit *other, bool add_reference) { |
87f0e418 LP |
2317 | |
2318 | static const UnitDependency inverse_table[_UNIT_DEPENDENCY_MAX] = { | |
2319 | [UNIT_REQUIRES] = UNIT_REQUIRED_BY, | |
87f0e418 | 2320 | [UNIT_WANTS] = UNIT_WANTED_BY, |
be7d9ff7 | 2321 | [UNIT_REQUISITE] = UNIT_REQUISITE_OF, |
7f2cddae | 2322 | [UNIT_BINDS_TO] = UNIT_BOUND_BY, |
60649f17 | 2323 | [UNIT_PART_OF] = UNIT_CONSISTS_OF, |
be7d9ff7 | 2324 | [UNIT_REQUIRED_BY] = UNIT_REQUIRES, |
be7d9ff7 | 2325 | [UNIT_REQUISITE_OF] = UNIT_REQUISITE, |
be7d9ff7 | 2326 | [UNIT_WANTED_BY] = UNIT_WANTS, |
7f2cddae | 2327 | [UNIT_BOUND_BY] = UNIT_BINDS_TO, |
60649f17 | 2328 | [UNIT_CONSISTS_OF] = UNIT_PART_OF, |
69dd2852 LP |
2329 | [UNIT_CONFLICTS] = UNIT_CONFLICTED_BY, |
2330 | [UNIT_CONFLICTED_BY] = UNIT_CONFLICTS, | |
87f0e418 | 2331 | [UNIT_BEFORE] = UNIT_AFTER, |
701cc384 | 2332 | [UNIT_AFTER] = UNIT_BEFORE, |
5de9682c | 2333 | [UNIT_ON_FAILURE] = _UNIT_DEPENDENCY_INVALID, |
701cc384 | 2334 | [UNIT_REFERENCES] = UNIT_REFERENCED_BY, |
57020a3a LP |
2335 | [UNIT_REFERENCED_BY] = UNIT_REFERENCES, |
2336 | [UNIT_TRIGGERS] = UNIT_TRIGGERED_BY, | |
4dcc1cb4 | 2337 | [UNIT_TRIGGERED_BY] = UNIT_TRIGGERS, |
7f2cddae | 2338 | [UNIT_PROPAGATES_RELOAD_TO] = UNIT_RELOAD_PROPAGATED_FROM, |
85e9a101 | 2339 | [UNIT_RELOAD_PROPAGATED_FROM] = UNIT_PROPAGATES_RELOAD_TO, |
613b411c | 2340 | [UNIT_JOINS_NAMESPACE_OF] = UNIT_JOINS_NAMESPACE_OF, |
87f0e418 | 2341 | }; |
701cc384 | 2342 | int r, q = 0, v = 0, w = 0; |
d1fab3fe | 2343 | Unit *orig_u = u, *orig_other = other; |
87f0e418 LP |
2344 | |
2345 | assert(u); | |
2346 | assert(d >= 0 && d < _UNIT_DEPENDENCY_MAX); | |
87f0e418 LP |
2347 | assert(other); |
2348 | ||
9f151f29 LP |
2349 | u = unit_follow_merge(u); |
2350 | other = unit_follow_merge(other); | |
2351 | ||
87f0e418 LP |
2352 | /* We won't allow dependencies on ourselves. We will not |
2353 | * consider them an error however. */ | |
d1fab3fe | 2354 | if (u == other) { |
f2341e0a | 2355 | maybe_warn_about_dependency(orig_u, orig_other->id, d); |
87f0e418 | 2356 | return 0; |
d1fab3fe | 2357 | } |
87f0e418 | 2358 | |
dd5e7000 ZJS |
2359 | if (d == UNIT_BEFORE && other->type == UNIT_DEVICE) { |
2360 | log_unit_warning(u, "Dependency Before=%s ignored (.device units cannot be delayed)", other->id); | |
2361 | return 0; | |
2362 | } | |
2363 | ||
d5099efc | 2364 | r = set_ensure_allocated(&u->dependencies[d], NULL); |
613b411c | 2365 | if (r < 0) |
87f0e418 LP |
2366 | return r; |
2367 | ||
613b411c | 2368 | if (inverse_table[d] != _UNIT_DEPENDENCY_INVALID) { |
d5099efc | 2369 | r = set_ensure_allocated(&other->dependencies[inverse_table[d]], NULL); |
613b411c LP |
2370 | if (r < 0) |
2371 | return r; | |
2372 | } | |
2373 | ||
2374 | if (add_reference) { | |
d5099efc | 2375 | r = set_ensure_allocated(&u->dependencies[UNIT_REFERENCES], NULL); |
613b411c | 2376 | if (r < 0) |
5de9682c LP |
2377 | return r; |
2378 | ||
d5099efc | 2379 | r = set_ensure_allocated(&other->dependencies[UNIT_REFERENCED_BY], NULL); |
613b411c | 2380 | if (r < 0) |
701cc384 | 2381 | return r; |
613b411c | 2382 | } |
87f0e418 | 2383 | |
613b411c LP |
2384 | q = set_put(u->dependencies[d], other); |
2385 | if (q < 0) | |
701cc384 | 2386 | return q; |
87f0e418 | 2387 | |
613b411c LP |
2388 | if (inverse_table[d] != _UNIT_DEPENDENCY_INVALID && inverse_table[d] != d) { |
2389 | v = set_put(other->dependencies[inverse_table[d]], u); | |
2390 | if (v < 0) { | |
5de9682c LP |
2391 | r = v; |
2392 | goto fail; | |
2393 | } | |
613b411c | 2394 | } |
701cc384 LP |
2395 | |
2396 | if (add_reference) { | |
613b411c LP |
2397 | w = set_put(u->dependencies[UNIT_REFERENCES], other); |
2398 | if (w < 0) { | |
701cc384 LP |
2399 | r = w; |
2400 | goto fail; | |
2401 | } | |
2402 | ||
613b411c LP |
2403 | r = set_put(other->dependencies[UNIT_REFERENCED_BY], u); |
2404 | if (r < 0) | |
701cc384 | 2405 | goto fail; |
87f0e418 LP |
2406 | } |
2407 | ||
c1e1601e | 2408 | unit_add_to_dbus_queue(u); |
87f0e418 | 2409 | return 0; |
701cc384 LP |
2410 | |
2411 | fail: | |
2412 | if (q > 0) | |
ac155bb8 | 2413 | set_remove(u->dependencies[d], other); |
701cc384 LP |
2414 | |
2415 | if (v > 0) | |
ac155bb8 | 2416 | set_remove(other->dependencies[inverse_table[d]], u); |
701cc384 LP |
2417 | |
2418 | if (w > 0) | |
ac155bb8 | 2419 | set_remove(u->dependencies[UNIT_REFERENCES], other); |
701cc384 LP |
2420 | |
2421 | return r; | |
87f0e418 | 2422 | } |
0301abf4 | 2423 | |
2c966c03 LP |
2424 | int unit_add_two_dependencies(Unit *u, UnitDependency d, UnitDependency e, Unit *other, bool add_reference) { |
2425 | int r; | |
2426 | ||
2427 | assert(u); | |
2428 | ||
3f3cc397 LP |
2429 | r = unit_add_dependency(u, d, other, add_reference); |
2430 | if (r < 0) | |
2c966c03 LP |
2431 | return r; |
2432 | ||
7410616c | 2433 | return unit_add_dependency(u, e, other, add_reference); |
2c966c03 LP |
2434 | } |
2435 | ||
7410616c LP |
2436 | static int resolve_template(Unit *u, const char *name, const char*path, char **buf, const char **ret) { |
2437 | int r; | |
9e2f7c11 LP |
2438 | |
2439 | assert(u); | |
2440 | assert(name || path); | |
7410616c LP |
2441 | assert(buf); |
2442 | assert(ret); | |
9e2f7c11 LP |
2443 | |
2444 | if (!name) | |
2b6bf07d | 2445 | name = basename(path); |
9e2f7c11 | 2446 | |
7410616c LP |
2447 | if (!unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) { |
2448 | *buf = NULL; | |
2449 | *ret = name; | |
2450 | return 0; | |
9e2f7c11 LP |
2451 | } |
2452 | ||
ac155bb8 | 2453 | if (u->instance) |
7410616c | 2454 | r = unit_name_replace_instance(name, u->instance, buf); |
9e2f7c11 | 2455 | else { |
ae018d9b | 2456 | _cleanup_free_ char *i = NULL; |
9e2f7c11 | 2457 | |
7410616c LP |
2458 | r = unit_name_to_prefix(u->id, &i); |
2459 | if (r < 0) | |
2460 | return r; | |
9e2f7c11 | 2461 | |
7410616c | 2462 | r = unit_name_replace_instance(name, i, buf); |
9e2f7c11 | 2463 | } |
7410616c LP |
2464 | if (r < 0) |
2465 | return r; | |
9e2f7c11 | 2466 | |
7410616c LP |
2467 | *ret = *buf; |
2468 | return 0; | |
9e2f7c11 LP |
2469 | } |
2470 | ||
701cc384 | 2471 | int unit_add_dependency_by_name(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) { |
7410616c | 2472 | _cleanup_free_ char *buf = NULL; |
09b6b09f LP |
2473 | Unit *other; |
2474 | int r; | |
2475 | ||
9e2f7c11 LP |
2476 | assert(u); |
2477 | assert(name || path); | |
09b6b09f | 2478 | |
7410616c LP |
2479 | r = resolve_template(u, name, path, &buf, &name); |
2480 | if (r < 0) | |
2481 | return r; | |
09b6b09f | 2482 | |
8afbb8e1 LP |
2483 | r = manager_load_unit(u->manager, name, path, NULL, &other); |
2484 | if (r < 0) | |
2485 | return r; | |
9e2f7c11 | 2486 | |
8afbb8e1 | 2487 | return unit_add_dependency(u, d, other, add_reference); |
09b6b09f LP |
2488 | } |
2489 | ||
2c966c03 | 2490 | int unit_add_two_dependencies_by_name(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference) { |
7410616c | 2491 | _cleanup_free_ char *buf = NULL; |
2c966c03 LP |
2492 | Unit *other; |
2493 | int r; | |
2c966c03 LP |
2494 | |
2495 | assert(u); | |
2496 | assert(name || path); | |
2497 | ||
7410616c LP |
2498 | r = resolve_template(u, name, path, &buf, &name); |
2499 | if (r < 0) | |
2500 | return r; | |
2c966c03 | 2501 | |
3f3cc397 LP |
2502 | r = manager_load_unit(u->manager, name, path, NULL, &other); |
2503 | if (r < 0) | |
68eda4bd | 2504 | return r; |
2c966c03 | 2505 | |
3f3cc397 | 2506 | return unit_add_two_dependencies(u, d, e, other, add_reference); |
2c966c03 LP |
2507 | } |
2508 | ||
0301abf4 | 2509 | int set_unit_path(const char *p) { |
0301abf4 | 2510 | /* This is mostly for debug purposes */ |
cbe46ead | 2511 | if (setenv("SYSTEMD_UNIT_PATH", p, 1) < 0) |
26d04f86 | 2512 | return -errno; |
0301abf4 LP |
2513 | |
2514 | return 0; | |
2515 | } | |
88066b3a | 2516 | |
ea430986 | 2517 | char *unit_dbus_path(Unit *u) { |
ea430986 LP |
2518 | assert(u); |
2519 | ||
ac155bb8 | 2520 | if (!u->id) |
04ade7d2 LP |
2521 | return NULL; |
2522 | ||
48899192 | 2523 | return unit_dbus_path_from_name(u->id); |
ea430986 LP |
2524 | } |
2525 | ||
4b58153d LP |
2526 | char *unit_dbus_path_invocation_id(Unit *u) { |
2527 | assert(u); | |
2528 | ||
2529 | if (sd_id128_is_null(u->invocation_id)) | |
2530 | return NULL; | |
2531 | ||
2532 | return unit_dbus_path_from_name(u->invocation_id_string); | |
2533 | } | |
2534 | ||
d79200e2 LP |
2535 | int unit_set_slice(Unit *u, Unit *slice) { |
2536 | assert(u); | |
2537 | assert(slice); | |
2538 | ||
2539 | /* Sets the unit slice if it has not been set before. Is extra | |
2540 | * careful, to only allow this for units that actually have a | |
2541 | * cgroup context. Also, we don't allow to set this for slices | |
2542 | * (since the parent slice is derived from the name). Make | |
2543 | * sure the unit we set is actually a slice. */ | |
2544 | ||
2545 | if (!UNIT_HAS_CGROUP_CONTEXT(u)) | |
2546 | return -EOPNOTSUPP; | |
2547 | ||
2548 | if (u->type == UNIT_SLICE) | |
2549 | return -EINVAL; | |
2550 | ||
102ef982 LP |
2551 | if (unit_active_state(u) != UNIT_INACTIVE) |
2552 | return -EBUSY; | |
2553 | ||
d79200e2 LP |
2554 | if (slice->type != UNIT_SLICE) |
2555 | return -EINVAL; | |
2556 | ||
efdb0237 LP |
2557 | if (unit_has_name(u, SPECIAL_INIT_SCOPE) && |
2558 | !unit_has_name(slice, SPECIAL_ROOT_SLICE)) | |
2559 | return -EPERM; | |
2560 | ||
d79200e2 LP |
2561 | if (UNIT_DEREF(u->slice) == slice) |
2562 | return 0; | |
2563 | ||
99e66921 TH |
2564 | /* Disallow slice changes if @u is already bound to cgroups */ |
2565 | if (UNIT_ISSET(u->slice) && u->cgroup_realized) | |
d79200e2 LP |
2566 | return -EBUSY; |
2567 | ||
99e66921 | 2568 | unit_ref_unset(&u->slice); |
d79200e2 LP |
2569 | unit_ref_set(&u->slice, slice); |
2570 | return 1; | |
2571 | } | |
2572 | ||
2573 | int unit_set_default_slice(Unit *u) { | |
a8833944 LP |
2574 | _cleanup_free_ char *b = NULL; |
2575 | const char *slice_name; | |
a016b922 LP |
2576 | Unit *slice; |
2577 | int r; | |
2578 | ||
2579 | assert(u); | |
2580 | ||
9444b1f2 | 2581 | if (UNIT_ISSET(u->slice)) |
a016b922 LP |
2582 | return 0; |
2583 | ||
a8833944 LP |
2584 | if (u->instance) { |
2585 | _cleanup_free_ char *prefix = NULL, *escaped = NULL; | |
68eda4bd | 2586 | |
a8833944 LP |
2587 | /* Implicitly place all instantiated units in their |
2588 | * own per-template slice */ | |
2589 | ||
7410616c LP |
2590 | r = unit_name_to_prefix(u->id, &prefix); |
2591 | if (r < 0) | |
2592 | return r; | |
a8833944 LP |
2593 | |
2594 | /* The prefix is already escaped, but it might include | |
2595 | * "-" which has a special meaning for slice units, | |
2596 | * hence escape it here extra. */ | |
7410616c | 2597 | escaped = unit_name_escape(prefix); |
a8833944 LP |
2598 | if (!escaped) |
2599 | return -ENOMEM; | |
2600 | ||
463d0d15 | 2601 | if (MANAGER_IS_SYSTEM(u->manager)) |
605405c6 | 2602 | b = strjoin("system-", escaped, ".slice"); |
a8833944 LP |
2603 | else |
2604 | b = strappend(escaped, ".slice"); | |
2605 | if (!b) | |
2606 | return -ENOMEM; | |
2607 | ||
2608 | slice_name = b; | |
2609 | } else | |
2610 | slice_name = | |
463d0d15 | 2611 | MANAGER_IS_SYSTEM(u->manager) && !unit_has_name(u, SPECIAL_INIT_SCOPE) |
a8833944 LP |
2612 | ? SPECIAL_SYSTEM_SLICE |
2613 | : SPECIAL_ROOT_SLICE; | |
2614 | ||
2615 | r = manager_load_unit(u->manager, slice_name, NULL, NULL, &slice); | |
a016b922 LP |
2616 | if (r < 0) |
2617 | return r; | |
2618 | ||
d79200e2 | 2619 | return unit_set_slice(u, slice); |
a016b922 LP |
2620 | } |
2621 | ||
9444b1f2 LP |
2622 | const char *unit_slice_name(Unit *u) { |
2623 | assert(u); | |
2624 | ||
2625 | if (!UNIT_ISSET(u->slice)) | |
2626 | return NULL; | |
2627 | ||
2628 | return UNIT_DEREF(u->slice)->id; | |
2629 | } | |
2630 | ||
f6ff8c29 | 2631 | int unit_load_related_unit(Unit *u, const char *type, Unit **_found) { |
78edb35a | 2632 | _cleanup_free_ char *t = NULL; |
f6ff8c29 LP |
2633 | int r; |
2634 | ||
2635 | assert(u); | |
2636 | assert(type); | |
2637 | assert(_found); | |
2638 | ||
7410616c LP |
2639 | r = unit_name_change_suffix(u->id, type, &t); |
2640 | if (r < 0) | |
2641 | return r; | |
2642 | if (unit_has_name(u, t)) | |
2643 | return -EINVAL; | |
f6ff8c29 | 2644 | |
ac155bb8 | 2645 | r = manager_load_unit(u->manager, t, NULL, NULL, _found); |
9e2f7c11 | 2646 | assert(r < 0 || *_found != u); |
f6ff8c29 LP |
2647 | return r; |
2648 | } | |
2649 | ||
bbc29086 DM |
2650 | static int signal_name_owner_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
2651 | const char *name, *old_owner, *new_owner; | |
2652 | Unit *u = userdata; | |
2653 | int r; | |
2654 | ||
2655 | assert(message); | |
2656 | assert(u); | |
2657 | ||
2658 | r = sd_bus_message_read(message, "sss", &name, &old_owner, &new_owner); | |
2659 | if (r < 0) { | |
2660 | bus_log_parse_error(r); | |
2661 | return 0; | |
2662 | } | |
2663 | ||
b0076268 MK |
2664 | old_owner = isempty(old_owner) ? NULL : old_owner; |
2665 | new_owner = isempty(new_owner) ? NULL : new_owner; | |
2666 | ||
bbc29086 DM |
2667 | if (UNIT_VTABLE(u)->bus_name_owner_change) |
2668 | UNIT_VTABLE(u)->bus_name_owner_change(u, name, old_owner, new_owner); | |
2669 | ||
2670 | return 0; | |
2671 | } | |
2672 | ||
9806e87d LP |
2673 | int unit_install_bus_match(Unit *u, sd_bus *bus, const char *name) { |
2674 | const char *match; | |
bbc29086 | 2675 | |
9806e87d LP |
2676 | assert(u); |
2677 | assert(bus); | |
2678 | assert(name); | |
bbc29086 DM |
2679 | |
2680 | if (u->match_bus_slot) | |
2681 | return -EBUSY; | |
2682 | ||
9806e87d | 2683 | match = strjoina("type='signal'," |
81d62103 ZJS |
2684 | "sender='org.freedesktop.DBus'," |
2685 | "path='/org/freedesktop/DBus'," | |
2686 | "interface='org.freedesktop.DBus'," | |
2687 | "member='NameOwnerChanged'," | |
2688 | "arg0='", name, "'"); | |
bbc29086 DM |
2689 | |
2690 | return sd_bus_add_match(bus, &u->match_bus_slot, match, signal_name_owner_changed, u); | |
2691 | } | |
2692 | ||
05e343b7 | 2693 | int unit_watch_bus_name(Unit *u, const char *name) { |
bbc29086 DM |
2694 | int r; |
2695 | ||
05e343b7 LP |
2696 | assert(u); |
2697 | assert(name); | |
2698 | ||
2699 | /* Watch a specific name on the bus. We only support one unit | |
2700 | * watching each name for now. */ | |
2701 | ||
bbc29086 DM |
2702 | if (u->manager->api_bus) { |
2703 | /* If the bus is already available, install the match directly. | |
2704 | * Otherwise, just put the name in the list. bus_setup_api() will take care later. */ | |
9806e87d | 2705 | r = unit_install_bus_match(u, u->manager->api_bus, name); |
bbc29086 | 2706 | if (r < 0) |
8ea823b6 | 2707 | return log_warning_errno(r, "Failed to subscribe to NameOwnerChanged signal for '%s': %m", name); |
bbc29086 DM |
2708 | } |
2709 | ||
2710 | r = hashmap_put(u->manager->watch_bus, name, u); | |
2711 | if (r < 0) { | |
2712 | u->match_bus_slot = sd_bus_slot_unref(u->match_bus_slot); | |
2713 | return log_warning_errno(r, "Failed to put bus name to hashmap: %m"); | |
2714 | } | |
2715 | ||
2716 | return 0; | |
05e343b7 LP |
2717 | } |
2718 | ||
2719 | void unit_unwatch_bus_name(Unit *u, const char *name) { | |
2720 | assert(u); | |
2721 | assert(name); | |
2722 | ||
8367fea5 | 2723 | (void) hashmap_remove_value(u->manager->watch_bus, name, u); |
bbc29086 | 2724 | u->match_bus_slot = sd_bus_slot_unref(u->match_bus_slot); |
05e343b7 LP |
2725 | } |
2726 | ||
a16e1123 LP |
2727 | bool unit_can_serialize(Unit *u) { |
2728 | assert(u); | |
2729 | ||
2730 | return UNIT_VTABLE(u)->serialize && UNIT_VTABLE(u)->deserialize_item; | |
2731 | } | |
2732 | ||
8b108bd0 FB |
2733 | static int unit_serialize_cgroup_mask(FILE *f, const char *key, CGroupMask mask) { |
2734 | _cleanup_free_ char *s = NULL; | |
2735 | int r = 0; | |
2736 | ||
2737 | assert(f); | |
2738 | assert(key); | |
2739 | ||
2740 | if (mask != 0) { | |
2741 | r = cg_mask_to_string(mask, &s); | |
2742 | if (r >= 0) { | |
2743 | fputs(key, f); | |
2744 | fputc('=', f); | |
2745 | fputs(s, f); | |
2746 | fputc('\n', f); | |
2747 | } | |
2748 | } | |
2749 | return r; | |
2750 | } | |
2751 | ||
6b78f9b4 | 2752 | int unit_serialize(Unit *u, FILE *f, FDSet *fds, bool serialize_jobs) { |
a16e1123 LP |
2753 | int r; |
2754 | ||
2755 | assert(u); | |
2756 | assert(f); | |
2757 | assert(fds); | |
2758 | ||
9bdb98c5 LP |
2759 | if (unit_can_serialize(u)) { |
2760 | ExecRuntime *rt; | |
a16e1123 | 2761 | |
9bdb98c5 | 2762 | r = UNIT_VTABLE(u)->serialize(u, f, fds); |
613b411c LP |
2763 | if (r < 0) |
2764 | return r; | |
9bdb98c5 LP |
2765 | |
2766 | rt = unit_get_exec_runtime(u); | |
2767 | if (rt) { | |
f2341e0a | 2768 | r = exec_runtime_serialize(u, rt, f, fds); |
9bdb98c5 LP |
2769 | if (r < 0) |
2770 | return r; | |
2771 | } | |
e0209d83 MS |
2772 | } |
2773 | ||
a483fb59 LP |
2774 | dual_timestamp_serialize(f, "state-change-timestamp", &u->state_change_timestamp); |
2775 | ||
ac155bb8 MS |
2776 | dual_timestamp_serialize(f, "inactive-exit-timestamp", &u->inactive_exit_timestamp); |
2777 | dual_timestamp_serialize(f, "active-enter-timestamp", &u->active_enter_timestamp); | |
2778 | dual_timestamp_serialize(f, "active-exit-timestamp", &u->active_exit_timestamp); | |
2779 | dual_timestamp_serialize(f, "inactive-enter-timestamp", &u->inactive_enter_timestamp); | |
a483fb59 | 2780 | |
ac155bb8 | 2781 | dual_timestamp_serialize(f, "condition-timestamp", &u->condition_timestamp); |
59fccdc5 | 2782 | dual_timestamp_serialize(f, "assert-timestamp", &u->assert_timestamp); |
2791a8f8 | 2783 | |
ac155bb8 MS |
2784 | if (dual_timestamp_is_set(&u->condition_timestamp)) |
2785 | unit_serialize_item(u, f, "condition-result", yes_no(u->condition_result)); | |
10717a1a | 2786 | |
59fccdc5 LP |
2787 | if (dual_timestamp_is_set(&u->assert_timestamp)) |
2788 | unit_serialize_item(u, f, "assert-result", yes_no(u->assert_result)); | |
2789 | ||
c2756a68 | 2790 | unit_serialize_item(u, f, "transient", yes_no(u->transient)); |
fe700f46 | 2791 | |
66ebf6c0 | 2792 | unit_serialize_item_format(u, f, "cpu-usage-base", "%" PRIu64, u->cpu_usage_base); |
fe700f46 LP |
2793 | if (u->cpu_usage_last != NSEC_INFINITY) |
2794 | unit_serialize_item_format(u, f, "cpu-usage-last", "%" PRIu64, u->cpu_usage_last); | |
c2756a68 LP |
2795 | |
2796 | if (u->cgroup_path) | |
2797 | unit_serialize_item(u, f, "cgroup", u->cgroup_path); | |
de1d4f9b | 2798 | unit_serialize_item(u, f, "cgroup-realized", yes_no(u->cgroup_realized)); |
8b108bd0 FB |
2799 | (void) unit_serialize_cgroup_mask(f, "cgroup-realized-mask", u->cgroup_realized_mask); |
2800 | (void) unit_serialize_cgroup_mask(f, "cgroup-enabled-mask", u->cgroup_enabled_mask); | |
c2756a68 | 2801 | |
00d9ef85 LP |
2802 | if (uid_is_valid(u->ref_uid)) |
2803 | unit_serialize_item_format(u, f, "ref-uid", UID_FMT, u->ref_uid); | |
2804 | if (gid_is_valid(u->ref_gid)) | |
2805 | unit_serialize_item_format(u, f, "ref-gid", GID_FMT, u->ref_gid); | |
2806 | ||
4b58153d LP |
2807 | if (!sd_id128_is_null(u->invocation_id)) |
2808 | unit_serialize_item_format(u, f, "invocation-id", SD_ID128_FORMAT_STR, SD_ID128_FORMAT_VAL(u->invocation_id)); | |
2809 | ||
05a98afd LP |
2810 | bus_track_serialize(u->bus_track, f, "ref"); |
2811 | ||
613b411c LP |
2812 | if (serialize_jobs) { |
2813 | if (u->job) { | |
2814 | fprintf(f, "job\n"); | |
05a98afd | 2815 | job_serialize(u->job, f); |
613b411c LP |
2816 | } |
2817 | ||
2818 | if (u->nop_job) { | |
2819 | fprintf(f, "job\n"); | |
05a98afd | 2820 | job_serialize(u->nop_job, f); |
613b411c LP |
2821 | } |
2822 | } | |
2823 | ||
a16e1123 LP |
2824 | /* End marker */ |
2825 | fputc('\n', f); | |
2826 | return 0; | |
2827 | } | |
2828 | ||
a34ceba6 LP |
2829 | int unit_serialize_item(Unit *u, FILE *f, const char *key, const char *value) { |
2830 | assert(u); | |
2831 | assert(f); | |
2832 | assert(key); | |
2833 | ||
2834 | if (!value) | |
2835 | return 0; | |
2836 | ||
2837 | fputs(key, f); | |
2838 | fputc('=', f); | |
2839 | fputs(value, f); | |
2840 | fputc('\n', f); | |
2841 | ||
2842 | return 1; | |
2843 | } | |
2844 | ||
2845 | int unit_serialize_item_escaped(Unit *u, FILE *f, const char *key, const char *value) { | |
2846 | _cleanup_free_ char *c = NULL; | |
2847 | ||
2848 | assert(u); | |
2849 | assert(f); | |
2850 | assert(key); | |
2851 | ||
2852 | if (!value) | |
2853 | return 0; | |
2854 | ||
2855 | c = cescape(value); | |
2856 | if (!c) | |
2857 | return -ENOMEM; | |
2858 | ||
2859 | fputs(key, f); | |
2860 | fputc('=', f); | |
2861 | fputs(c, f); | |
2862 | fputc('\n', f); | |
2863 | ||
2864 | return 1; | |
2865 | } | |
2866 | ||
2867 | int unit_serialize_item_fd(Unit *u, FILE *f, FDSet *fds, const char *key, int fd) { | |
2868 | int copy; | |
2869 | ||
2870 | assert(u); | |
2871 | assert(f); | |
2872 | assert(key); | |
2873 | ||
2874 | if (fd < 0) | |
2875 | return 0; | |
2876 | ||
2877 | copy = fdset_put_dup(fds, fd); | |
2878 | if (copy < 0) | |
2879 | return copy; | |
2880 | ||
2881 | fprintf(f, "%s=%i\n", key, copy); | |
2882 | return 1; | |
2883 | } | |
2884 | ||
a16e1123 LP |
2885 | void unit_serialize_item_format(Unit *u, FILE *f, const char *key, const char *format, ...) { |
2886 | va_list ap; | |
2887 | ||
2888 | assert(u); | |
2889 | assert(f); | |
2890 | assert(key); | |
2891 | assert(format); | |
2892 | ||
2893 | fputs(key, f); | |
2894 | fputc('=', f); | |
2895 | ||
2896 | va_start(ap, format); | |
2897 | vfprintf(f, format, ap); | |
2898 | va_end(ap); | |
2899 | ||
2900 | fputc('\n', f); | |
2901 | } | |
2902 | ||
a16e1123 | 2903 | int unit_deserialize(Unit *u, FILE *f, FDSet *fds) { |
28b99ccd | 2904 | ExecRuntime **rt = NULL; |
9bdb98c5 | 2905 | size_t offset; |
a16e1123 LP |
2906 | int r; |
2907 | ||
2908 | assert(u); | |
2909 | assert(f); | |
2910 | assert(fds); | |
2911 | ||
613b411c LP |
2912 | offset = UNIT_VTABLE(u)->exec_runtime_offset; |
2913 | if (offset > 0) | |
2914 | rt = (ExecRuntime**) ((uint8_t*) u + offset); | |
2915 | ||
a16e1123 | 2916 | for (;;) { |
20c03b7b | 2917 | char line[LINE_MAX], *l, *v; |
a16e1123 LP |
2918 | size_t k; |
2919 | ||
2920 | if (!fgets(line, sizeof(line), f)) { | |
2921 | if (feof(f)) | |
2922 | return 0; | |
2923 | return -errno; | |
2924 | } | |
2925 | ||
10f8e83c | 2926 | char_array_0(line); |
a16e1123 LP |
2927 | l = strstrip(line); |
2928 | ||
2929 | /* End marker */ | |
e911de99 | 2930 | if (isempty(l)) |
a483fb59 | 2931 | break; |
a16e1123 LP |
2932 | |
2933 | k = strcspn(l, "="); | |
2934 | ||
2935 | if (l[k] == '=') { | |
2936 | l[k] = 0; | |
2937 | v = l+k+1; | |
2938 | } else | |
2939 | v = l+k; | |
2940 | ||
cca098b0 | 2941 | if (streq(l, "job")) { |
39a18c60 MS |
2942 | if (v[0] == '\0') { |
2943 | /* new-style serialized job */ | |
9c3349e2 LP |
2944 | Job *j; |
2945 | ||
2946 | j = job_new_raw(u); | |
39a18c60 | 2947 | if (!j) |
e911de99 | 2948 | return log_oom(); |
39a18c60 | 2949 | |
05a98afd | 2950 | r = job_deserialize(j, f); |
39a18c60 MS |
2951 | if (r < 0) { |
2952 | job_free(j); | |
2953 | return r; | |
2954 | } | |
cca098b0 | 2955 | |
39a18c60 MS |
2956 | r = hashmap_put(u->manager->jobs, UINT32_TO_PTR(j->id), j); |
2957 | if (r < 0) { | |
2958 | job_free(j); | |
2959 | return r; | |
2960 | } | |
e0209d83 MS |
2961 | |
2962 | r = job_install_deserialized(j); | |
2963 | if (r < 0) { | |
2964 | hashmap_remove(u->manager->jobs, UINT32_TO_PTR(j->id)); | |
2965 | job_free(j); | |
2966 | return r; | |
2967 | } | |
ed10fa8c LP |
2968 | } else /* legacy for pre-44 */ |
2969 | log_unit_warning(u, "Update from too old systemd versions are unsupported, cannot deserialize job: %s", v); | |
cca098b0 | 2970 | continue; |
a483fb59 LP |
2971 | } else if (streq(l, "state-change-timestamp")) { |
2972 | dual_timestamp_deserialize(v, &u->state_change_timestamp); | |
2973 | continue; | |
8aaf019b | 2974 | } else if (streq(l, "inactive-exit-timestamp")) { |
ac155bb8 | 2975 | dual_timestamp_deserialize(v, &u->inactive_exit_timestamp); |
8aaf019b LP |
2976 | continue; |
2977 | } else if (streq(l, "active-enter-timestamp")) { | |
ac155bb8 | 2978 | dual_timestamp_deserialize(v, &u->active_enter_timestamp); |
8aaf019b LP |
2979 | continue; |
2980 | } else if (streq(l, "active-exit-timestamp")) { | |
ac155bb8 | 2981 | dual_timestamp_deserialize(v, &u->active_exit_timestamp); |
8aaf019b LP |
2982 | continue; |
2983 | } else if (streq(l, "inactive-enter-timestamp")) { | |
ac155bb8 | 2984 | dual_timestamp_deserialize(v, &u->inactive_enter_timestamp); |
8aaf019b | 2985 | continue; |
2791a8f8 | 2986 | } else if (streq(l, "condition-timestamp")) { |
ac155bb8 | 2987 | dual_timestamp_deserialize(v, &u->condition_timestamp); |
2791a8f8 | 2988 | continue; |
59fccdc5 LP |
2989 | } else if (streq(l, "assert-timestamp")) { |
2990 | dual_timestamp_deserialize(v, &u->assert_timestamp); | |
2991 | continue; | |
2791a8f8 | 2992 | } else if (streq(l, "condition-result")) { |
2791a8f8 | 2993 | |
e911de99 LP |
2994 | r = parse_boolean(v); |
2995 | if (r < 0) | |
f2341e0a | 2996 | log_unit_debug(u, "Failed to parse condition result value %s, ignoring.", v); |
2791a8f8 | 2997 | else |
e911de99 | 2998 | u->condition_result = r; |
efbac6d2 LP |
2999 | |
3000 | continue; | |
c2756a68 | 3001 | |
59fccdc5 | 3002 | } else if (streq(l, "assert-result")) { |
59fccdc5 | 3003 | |
e911de99 LP |
3004 | r = parse_boolean(v); |
3005 | if (r < 0) | |
f2341e0a | 3006 | log_unit_debug(u, "Failed to parse assert result value %s, ignoring.", v); |
59fccdc5 | 3007 | else |
e911de99 | 3008 | u->assert_result = r; |
59fccdc5 LP |
3009 | |
3010 | continue; | |
3011 | ||
c2756a68 | 3012 | } else if (streq(l, "transient")) { |
c2756a68 | 3013 | |
e911de99 LP |
3014 | r = parse_boolean(v); |
3015 | if (r < 0) | |
f2341e0a | 3016 | log_unit_debug(u, "Failed to parse transient bool %s, ignoring.", v); |
c2756a68 | 3017 | else |
e911de99 | 3018 | u->transient = r; |
c2756a68 LP |
3019 | |
3020 | continue; | |
e911de99 | 3021 | |
fe700f46 | 3022 | } else if (STR_IN_SET(l, "cpu-usage-base", "cpuacct-usage-base")) { |
5ad096b3 | 3023 | |
66ebf6c0 | 3024 | r = safe_atou64(v, &u->cpu_usage_base); |
5ad096b3 | 3025 | if (r < 0) |
fe700f46 LP |
3026 | log_unit_debug(u, "Failed to parse CPU usage base %s, ignoring.", v); |
3027 | ||
3028 | continue; | |
3029 | ||
3030 | } else if (streq(l, "cpu-usage-last")) { | |
3031 | ||
3032 | r = safe_atou64(v, &u->cpu_usage_last); | |
3033 | if (r < 0) | |
3034 | log_unit_debug(u, "Failed to read CPU usage last %s, ignoring.", v); | |
5ad096b3 | 3035 | |
0f908397 | 3036 | continue; |
4e595329 | 3037 | |
e911de99 | 3038 | } else if (streq(l, "cgroup")) { |
72673e86 | 3039 | |
e911de99 LP |
3040 | r = unit_set_cgroup_path(u, v); |
3041 | if (r < 0) | |
f2341e0a | 3042 | log_unit_debug_errno(u, r, "Failed to set cgroup path %s, ignoring: %m", v); |
4e595329 | 3043 | |
efdb0237 LP |
3044 | (void) unit_watch_cgroup(u); |
3045 | ||
de1d4f9b WF |
3046 | continue; |
3047 | } else if (streq(l, "cgroup-realized")) { | |
3048 | int b; | |
3049 | ||
3050 | b = parse_boolean(v); | |
3051 | if (b < 0) | |
3052 | log_unit_debug(u, "Failed to parse cgroup-realized bool %s, ignoring.", v); | |
3053 | else | |
3054 | u->cgroup_realized = b; | |
3055 | ||
c2756a68 | 3056 | continue; |
00d9ef85 | 3057 | |
8b108bd0 FB |
3058 | } else if (streq(l, "cgroup-realized-mask")) { |
3059 | ||
3060 | r = cg_mask_from_string(v, &u->cgroup_realized_mask); | |
3061 | if (r < 0) | |
3062 | log_unit_debug(u, "Failed to parse cgroup-realized-mask %s, ignoring.", v); | |
3063 | continue; | |
3064 | ||
3065 | } else if (streq(l, "cgroup-enabled-mask")) { | |
3066 | ||
3067 | r = cg_mask_from_string(v, &u->cgroup_enabled_mask); | |
3068 | if (r < 0) | |
3069 | log_unit_debug(u, "Failed to parse cgroup-enabled-mask %s, ignoring.", v); | |
3070 | continue; | |
3071 | ||
00d9ef85 LP |
3072 | } else if (streq(l, "ref-uid")) { |
3073 | uid_t uid; | |
3074 | ||
3075 | r = parse_uid(v, &uid); | |
3076 | if (r < 0) | |
3077 | log_unit_debug(u, "Failed to parse referenced UID %s, ignoring.", v); | |
3078 | else | |
3079 | unit_ref_uid_gid(u, uid, GID_INVALID); | |
3080 | ||
3081 | continue; | |
3082 | ||
3083 | } else if (streq(l, "ref-gid")) { | |
3084 | gid_t gid; | |
3085 | ||
3086 | r = parse_gid(v, &gid); | |
3087 | if (r < 0) | |
3088 | log_unit_debug(u, "Failed to parse referenced GID %s, ignoring.", v); | |
3089 | else | |
3090 | unit_ref_uid_gid(u, UID_INVALID, gid); | |
3091 | ||
05a98afd LP |
3092 | } else if (streq(l, "ref")) { |
3093 | ||
3094 | r = strv_extend(&u->deserialized_refs, v); | |
3095 | if (r < 0) | |
3096 | log_oom(); | |
3097 | ||
4b58153d LP |
3098 | continue; |
3099 | } else if (streq(l, "invocation-id")) { | |
3100 | sd_id128_t id; | |
3101 | ||
3102 | r = sd_id128_from_string(v, &id); | |
3103 | if (r < 0) | |
3104 | log_unit_debug(u, "Failed to parse invocation id %s, ignoring.", v); | |
3105 | else { | |
3106 | r = unit_set_invocation_id(u, id); | |
3107 | if (r < 0) | |
3108 | log_unit_warning_errno(u, r, "Failed to set invocation ID for unit: %m"); | |
3109 | } | |
3110 | ||
00d9ef85 | 3111 | continue; |
8aaf019b | 3112 | } |
cca098b0 | 3113 | |
9bdb98c5 LP |
3114 | if (unit_can_serialize(u)) { |
3115 | if (rt) { | |
f2341e0a | 3116 | r = exec_runtime_deserialize_item(u, rt, l, v, fds); |
e911de99 | 3117 | if (r < 0) { |
f2341e0a | 3118 | log_unit_warning(u, "Failed to deserialize runtime parameter '%s', ignoring.", l); |
e911de99 LP |
3119 | continue; |
3120 | } | |
3121 | ||
3122 | /* Returns positive if key was handled by the call */ | |
9bdb98c5 LP |
3123 | if (r > 0) |
3124 | continue; | |
3125 | } | |
3126 | ||
3127 | r = UNIT_VTABLE(u)->deserialize_item(u, l, v, fds); | |
613b411c | 3128 | if (r < 0) |
f2341e0a | 3129 | log_unit_warning(u, "Failed to deserialize unit parameter '%s', ignoring.", l); |
613b411c | 3130 | } |
a16e1123 | 3131 | } |
a483fb59 LP |
3132 | |
3133 | /* Versions before 228 did not carry a state change timestamp. In this case, take the current time. This is | |
3134 | * useful, so that timeouts based on this timestamp don't trigger too early, and is in-line with the logic from | |
1f133e0d | 3135 | * before 228 where the base for timeouts was not persistent across reboots. */ |
a483fb59 LP |
3136 | |
3137 | if (!dual_timestamp_is_set(&u->state_change_timestamp)) | |
3138 | dual_timestamp_get(&u->state_change_timestamp); | |
3139 | ||
3140 | return 0; | |
a16e1123 LP |
3141 | } |
3142 | ||
07429866 ZJS |
3143 | void unit_deserialize_skip(FILE *f) { |
3144 | assert(f); | |
3145 | ||
3146 | /* Skip serialized data for this unit. We don't know what it is. */ | |
3147 | ||
3148 | for (;;) { | |
3149 | char line[LINE_MAX], *l; | |
3150 | ||
3151 | if (!fgets(line, sizeof line, f)) | |
3152 | return; | |
3153 | ||
3154 | char_array_0(line); | |
3155 | l = strstrip(line); | |
3156 | ||
3157 | /* End marker */ | |
3158 | if (isempty(l)) | |
3159 | return; | |
3160 | } | |
3161 | } | |
3162 | ||
3163 | ||
9d06297e | 3164 | int unit_add_node_link(Unit *u, const char *what, bool wants, UnitDependency dep) { |
6e2ef85b | 3165 | Unit *device; |
68eda4bd | 3166 | _cleanup_free_ char *e = NULL; |
6e2ef85b LP |
3167 | int r; |
3168 | ||
3169 | assert(u); | |
3170 | ||
6e2ef85b | 3171 | /* Adds in links to the device node that this unit is based on */ |
47bc12e1 LP |
3172 | if (isempty(what)) |
3173 | return 0; | |
6e2ef85b | 3174 | |
8407a5d0 | 3175 | if (!is_device_path(what)) |
6e2ef85b LP |
3176 | return 0; |
3177 | ||
47bc12e1 LP |
3178 | /* When device units aren't supported (such as in a |
3179 | * container), don't create dependencies on them. */ | |
1c2e9646 | 3180 | if (!unit_type_supported(UNIT_DEVICE)) |
47bc12e1 LP |
3181 | return 0; |
3182 | ||
7410616c LP |
3183 | r = unit_name_from_path(what, ".device", &e); |
3184 | if (r < 0) | |
3185 | return r; | |
6e2ef85b | 3186 | |
ac155bb8 | 3187 | r = manager_load_unit(u->manager, e, NULL, NULL, &device); |
6e2ef85b LP |
3188 | if (r < 0) |
3189 | return r; | |
3190 | ||
ebc8968b FB |
3191 | if (dep == UNIT_REQUIRES && device_shall_be_bound_by(device, u)) |
3192 | dep = UNIT_BINDS_TO; | |
3193 | ||
9d06297e | 3194 | r = unit_add_two_dependencies(u, UNIT_AFTER, |
463d0d15 | 3195 | MANAGER_IS_SYSTEM(u->manager) ? dep : UNIT_WANTS, |
9d06297e | 3196 | device, true); |
faa368e3 | 3197 | if (r < 0) |
6e2ef85b LP |
3198 | return r; |
3199 | ||
faa368e3 LP |
3200 | if (wants) { |
3201 | r = unit_add_dependency(device, UNIT_WANTS, u, false); | |
3202 | if (r < 0) | |
6e2ef85b | 3203 | return r; |
faa368e3 | 3204 | } |
6e2ef85b LP |
3205 | |
3206 | return 0; | |
3207 | } | |
a16e1123 | 3208 | |
be847e82 | 3209 | int unit_coldplug(Unit *u) { |
05a98afd LP |
3210 | int r = 0, q; |
3211 | char **i; | |
cca098b0 LP |
3212 | |
3213 | assert(u); | |
3214 | ||
f78f265f LP |
3215 | /* Make sure we don't enter a loop, when coldplugging |
3216 | * recursively. */ | |
3217 | if (u->coldplugged) | |
3218 | return 0; | |
3219 | ||
3220 | u->coldplugged = true; | |
3221 | ||
05a98afd LP |
3222 | STRV_FOREACH(i, u->deserialized_refs) { |
3223 | q = bus_unit_track_add_name(u, *i); | |
3224 | if (q < 0 && r >= 0) | |
3225 | r = q; | |
3226 | } | |
3227 | u->deserialized_refs = strv_free(u->deserialized_refs); | |
cca098b0 | 3228 | |
05a98afd LP |
3229 | if (UNIT_VTABLE(u)->coldplug) { |
3230 | q = UNIT_VTABLE(u)->coldplug(u); | |
3231 | if (q < 0 && r >= 0) | |
3232 | r = q; | |
3233 | } | |
5a6158b6 | 3234 | |
05a98afd LP |
3235 | if (u->job) { |
3236 | q = job_coldplug(u->job); | |
3237 | if (q < 0 && r >= 0) | |
3238 | r = q; | |
3239 | } | |
cca098b0 | 3240 | |
05a98afd | 3241 | return r; |
cca098b0 LP |
3242 | } |
3243 | ||
ba25d39e | 3244 | static bool fragment_mtime_newer(const char *path, usec_t mtime, bool path_masked) { |
21b95806 ZJS |
3245 | struct stat st; |
3246 | ||
3247 | if (!path) | |
3248 | return false; | |
3249 | ||
77969722 LP |
3250 | /* If the source is some virtual kernel file system, then we assume we watch it anyway, and hence pretend we |
3251 | * are never out-of-date. */ | |
3252 | if (PATH_STARTSWITH_SET(path, "/proc", "/sys")) | |
3253 | return false; | |
3254 | ||
21b95806 ZJS |
3255 | if (stat(path, &st) < 0) |
3256 | /* What, cannot access this anymore? */ | |
3257 | return true; | |
3258 | ||
ba25d39e ZJS |
3259 | if (path_masked) |
3260 | /* For masked files check if they are still so */ | |
3261 | return !null_or_empty(&st); | |
3262 | else | |
3a8db9fe | 3263 | /* For non-empty files check the mtime */ |
87ec20ef | 3264 | return timespec_load(&st.st_mtim) > mtime; |
21b95806 ZJS |
3265 | |
3266 | return false; | |
3267 | } | |
3268 | ||
45fb0699 | 3269 | bool unit_need_daemon_reload(Unit *u) { |
ae7a7182 OS |
3270 | _cleanup_strv_free_ char **t = NULL; |
3271 | char **path; | |
1b64d026 | 3272 | |
45fb0699 LP |
3273 | assert(u); |
3274 | ||
ba25d39e ZJS |
3275 | /* For unit files, we allow masking… */ |
3276 | if (fragment_mtime_newer(u->fragment_path, u->fragment_mtime, | |
3277 | u->load_state == UNIT_MASKED)) | |
21b95806 | 3278 | return true; |
5f4b19f4 | 3279 | |
ba25d39e ZJS |
3280 | /* Source paths should not be masked… */ |
3281 | if (fragment_mtime_newer(u->source_path, u->source_mtime, false)) | |
ab932a62 | 3282 | return true; |
ae7a7182 | 3283 | |
ab932a62 LP |
3284 | (void) unit_find_dropin_paths(u, &t); |
3285 | if (!strv_equal(u->dropin_paths, t)) | |
3286 | return true; | |
6d10d308 | 3287 | |
ba25d39e | 3288 | /* … any drop-ins that are masked are simply omitted from the list. */ |
ab932a62 | 3289 | STRV_FOREACH(path, u->dropin_paths) |
ba25d39e | 3290 | if (fragment_mtime_newer(*path, u->dropin_mtime, false)) |
ab932a62 | 3291 | return true; |
21b95806 | 3292 | |
ab932a62 | 3293 | return false; |
45fb0699 LP |
3294 | } |
3295 | ||
fdf20a31 | 3296 | void unit_reset_failed(Unit *u) { |
5632e374 LP |
3297 | assert(u); |
3298 | ||
fdf20a31 MM |
3299 | if (UNIT_VTABLE(u)->reset_failed) |
3300 | UNIT_VTABLE(u)->reset_failed(u); | |
6bf0f408 LP |
3301 | |
3302 | RATELIMIT_RESET(u->start_limit); | |
3303 | u->start_limit_hit = false; | |
5632e374 LP |
3304 | } |
3305 | ||
a7f241db LP |
3306 | Unit *unit_following(Unit *u) { |
3307 | assert(u); | |
3308 | ||
3309 | if (UNIT_VTABLE(u)->following) | |
3310 | return UNIT_VTABLE(u)->following(u); | |
3311 | ||
3312 | return NULL; | |
3313 | } | |
3314 | ||
31afa0a4 | 3315 | bool unit_stop_pending(Unit *u) { |
18ffdfda LP |
3316 | assert(u); |
3317 | ||
31afa0a4 LP |
3318 | /* This call does check the current state of the unit. It's |
3319 | * hence useful to be called from state change calls of the | |
3320 | * unit itself, where the state isn't updated yet. This is | |
3321 | * different from unit_inactive_or_pending() which checks both | |
3322 | * the current state and for a queued job. */ | |
18ffdfda | 3323 | |
31afa0a4 LP |
3324 | return u->job && u->job->type == JOB_STOP; |
3325 | } | |
3326 | ||
3327 | bool unit_inactive_or_pending(Unit *u) { | |
3328 | assert(u); | |
3329 | ||
3330 | /* Returns true if the unit is inactive or going down */ | |
18ffdfda | 3331 | |
d956ac29 LP |
3332 | if (UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))) |
3333 | return true; | |
3334 | ||
31afa0a4 | 3335 | if (unit_stop_pending(u)) |
18ffdfda LP |
3336 | return true; |
3337 | ||
3338 | return false; | |
3339 | } | |
3340 | ||
31afa0a4 | 3341 | bool unit_active_or_pending(Unit *u) { |
f976f3f6 LP |
3342 | assert(u); |
3343 | ||
f60c2665 | 3344 | /* Returns true if the unit is active or going up */ |
f976f3f6 LP |
3345 | |
3346 | if (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) | |
3347 | return true; | |
3348 | ||
ac155bb8 MS |
3349 | if (u->job && |
3350 | (u->job->type == JOB_START || | |
3351 | u->job->type == JOB_RELOAD_OR_START || | |
3352 | u->job->type == JOB_RESTART)) | |
f976f3f6 LP |
3353 | return true; |
3354 | ||
3355 | return false; | |
3356 | } | |
3357 | ||
718db961 | 3358 | int unit_kill(Unit *u, KillWho w, int signo, sd_bus_error *error) { |
8a0867d6 LP |
3359 | assert(u); |
3360 | assert(w >= 0 && w < _KILL_WHO_MAX); | |
6eb7c172 | 3361 | assert(SIGNAL_VALID(signo)); |
8a0867d6 | 3362 | |
8a0867d6 | 3363 | if (!UNIT_VTABLE(u)->kill) |
15411c0c | 3364 | return -EOPNOTSUPP; |
8a0867d6 | 3365 | |
c74f17d9 | 3366 | return UNIT_VTABLE(u)->kill(u, w, signo, error); |
8a0867d6 LP |
3367 | } |
3368 | ||
82659fd7 LP |
3369 | static Set *unit_pid_set(pid_t main_pid, pid_t control_pid) { |
3370 | Set *pid_set; | |
3371 | int r; | |
3372 | ||
d5099efc | 3373 | pid_set = set_new(NULL); |
82659fd7 LP |
3374 | if (!pid_set) |
3375 | return NULL; | |
3376 | ||
3377 | /* Exclude the main/control pids from being killed via the cgroup */ | |
3378 | if (main_pid > 0) { | |
fea72cc0 | 3379 | r = set_put(pid_set, PID_TO_PTR(main_pid)); |
82659fd7 LP |
3380 | if (r < 0) |
3381 | goto fail; | |
3382 | } | |
3383 | ||
3384 | if (control_pid > 0) { | |
fea72cc0 | 3385 | r = set_put(pid_set, PID_TO_PTR(control_pid)); |
82659fd7 LP |
3386 | if (r < 0) |
3387 | goto fail; | |
3388 | } | |
3389 | ||
3390 | return pid_set; | |
3391 | ||
3392 | fail: | |
3393 | set_free(pid_set); | |
3394 | return NULL; | |
3395 | } | |
3396 | ||
d91c34f2 LP |
3397 | int unit_kill_common( |
3398 | Unit *u, | |
3399 | KillWho who, | |
3400 | int signo, | |
3401 | pid_t main_pid, | |
3402 | pid_t control_pid, | |
718db961 | 3403 | sd_bus_error *error) { |
d91c34f2 | 3404 | |
814cc562 | 3405 | int r = 0; |
ac5e3a50 | 3406 | bool killed = false; |
814cc562 | 3407 | |
ac5e3a50 | 3408 | if (IN_SET(who, KILL_MAIN, KILL_MAIN_FAIL)) { |
814cc562 | 3409 | if (main_pid < 0) |
7358dc02 | 3410 | return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_PROCESS, "%s units have no main processes", unit_type_to_string(u->type)); |
52f448c3 | 3411 | else if (main_pid == 0) |
7358dc02 | 3412 | return sd_bus_error_set_const(error, BUS_ERROR_NO_SUCH_PROCESS, "No main process to kill"); |
814cc562 MS |
3413 | } |
3414 | ||
ac5e3a50 | 3415 | if (IN_SET(who, KILL_CONTROL, KILL_CONTROL_FAIL)) { |
814cc562 | 3416 | if (control_pid < 0) |
7358dc02 | 3417 | return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_PROCESS, "%s units have no control processes", unit_type_to_string(u->type)); |
52f448c3 | 3418 | else if (control_pid == 0) |
7358dc02 | 3419 | return sd_bus_error_set_const(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill"); |
814cc562 MS |
3420 | } |
3421 | ||
ac5e3a50 JS |
3422 | if (IN_SET(who, KILL_CONTROL, KILL_CONTROL_FAIL, KILL_ALL, KILL_ALL_FAIL)) |
3423 | if (control_pid > 0) { | |
814cc562 MS |
3424 | if (kill(control_pid, signo) < 0) |
3425 | r = -errno; | |
ac5e3a50 JS |
3426 | else |
3427 | killed = true; | |
3428 | } | |
814cc562 | 3429 | |
ac5e3a50 JS |
3430 | if (IN_SET(who, KILL_MAIN, KILL_MAIN_FAIL, KILL_ALL, KILL_ALL_FAIL)) |
3431 | if (main_pid > 0) { | |
814cc562 MS |
3432 | if (kill(main_pid, signo) < 0) |
3433 | r = -errno; | |
ac5e3a50 JS |
3434 | else |
3435 | killed = true; | |
3436 | } | |
814cc562 | 3437 | |
ac5e3a50 | 3438 | if (IN_SET(who, KILL_ALL, KILL_ALL_FAIL) && u->cgroup_path) { |
814cc562 MS |
3439 | _cleanup_set_free_ Set *pid_set = NULL; |
3440 | int q; | |
3441 | ||
82659fd7 LP |
3442 | /* Exclude the main/control pids from being killed via the cgroup */ |
3443 | pid_set = unit_pid_set(main_pid, control_pid); | |
814cc562 MS |
3444 | if (!pid_set) |
3445 | return -ENOMEM; | |
3446 | ||
1d98fef1 | 3447 | q = cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, signo, 0, pid_set, NULL, NULL); |
814cc562 MS |
3448 | if (q < 0 && q != -EAGAIN && q != -ESRCH && q != -ENOENT) |
3449 | r = q; | |
ac5e3a50 JS |
3450 | else |
3451 | killed = true; | |
814cc562 MS |
3452 | } |
3453 | ||
201f0c91 | 3454 | if (r == 0 && !killed && IN_SET(who, KILL_ALL_FAIL, KILL_CONTROL_FAIL)) |
ac5e3a50 JS |
3455 | return -ESRCH; |
3456 | ||
814cc562 MS |
3457 | return r; |
3458 | } | |
3459 | ||
6210e7fc LP |
3460 | int unit_following_set(Unit *u, Set **s) { |
3461 | assert(u); | |
3462 | assert(s); | |
3463 | ||
3464 | if (UNIT_VTABLE(u)->following_set) | |
3465 | return UNIT_VTABLE(u)->following_set(u, s); | |
3466 | ||
3467 | *s = NULL; | |
3468 | return 0; | |
3469 | } | |
3470 | ||
a4375746 | 3471 | UnitFileState unit_get_unit_file_state(Unit *u) { |
0ec0deaa LP |
3472 | int r; |
3473 | ||
a4375746 LP |
3474 | assert(u); |
3475 | ||
0ec0deaa LP |
3476 | if (u->unit_file_state < 0 && u->fragment_path) { |
3477 | r = unit_file_get_state( | |
463d0d15 | 3478 | u->manager->unit_file_scope, |
0ec0deaa LP |
3479 | NULL, |
3480 | basename(u->fragment_path), | |
3481 | &u->unit_file_state); | |
3482 | if (r < 0) | |
3483 | u->unit_file_state = UNIT_FILE_BAD; | |
3484 | } | |
a4375746 | 3485 | |
ac155bb8 | 3486 | return u->unit_file_state; |
a4375746 LP |
3487 | } |
3488 | ||
d2dc52db LP |
3489 | int unit_get_unit_file_preset(Unit *u) { |
3490 | assert(u); | |
3491 | ||
3492 | if (u->unit_file_preset < 0 && u->fragment_path) | |
3493 | u->unit_file_preset = unit_file_query_preset( | |
463d0d15 | 3494 | u->manager->unit_file_scope, |
0ec0deaa LP |
3495 | NULL, |
3496 | basename(u->fragment_path)); | |
d2dc52db LP |
3497 | |
3498 | return u->unit_file_preset; | |
3499 | } | |
3500 | ||
57020a3a LP |
3501 | Unit* unit_ref_set(UnitRef *ref, Unit *u) { |
3502 | assert(ref); | |
3503 | assert(u); | |
3504 | ||
3505 | if (ref->unit) | |
3506 | unit_ref_unset(ref); | |
3507 | ||
3508 | ref->unit = u; | |
71fda00f | 3509 | LIST_PREPEND(refs, u->refs, ref); |
57020a3a LP |
3510 | return u; |
3511 | } | |
3512 | ||
3513 | void unit_ref_unset(UnitRef *ref) { | |
3514 | assert(ref); | |
3515 | ||
3516 | if (!ref->unit) | |
3517 | return; | |
3518 | ||
b75102e5 LP |
3519 | /* We are about to drop a reference to the unit, make sure the garbage collection has a look at it as it might |
3520 | * be unreferenced now. */ | |
3521 | unit_add_to_gc_queue(ref->unit); | |
3522 | ||
71fda00f | 3523 | LIST_REMOVE(refs, ref->unit->refs, ref); |
57020a3a LP |
3524 | ref->unit = NULL; |
3525 | } | |
3526 | ||
29206d46 LP |
3527 | static int user_from_unit_name(Unit *u, char **ret) { |
3528 | ||
3529 | static const uint8_t hash_key[] = { | |
3530 | 0x58, 0x1a, 0xaf, 0xe6, 0x28, 0x58, 0x4e, 0x96, | |
3531 | 0xb4, 0x4e, 0xf5, 0x3b, 0x8c, 0x92, 0x07, 0xec | |
3532 | }; | |
3533 | ||
3534 | _cleanup_free_ char *n = NULL; | |
3535 | int r; | |
3536 | ||
3537 | r = unit_name_to_prefix(u->id, &n); | |
3538 | if (r < 0) | |
3539 | return r; | |
3540 | ||
3541 | if (valid_user_group_name(n)) { | |
3542 | *ret = n; | |
3543 | n = NULL; | |
3544 | return 0; | |
3545 | } | |
3546 | ||
3547 | /* If we can't use the unit name as a user name, then let's hash it and use that */ | |
3548 | if (asprintf(ret, "_du%016" PRIx64, siphash24(n, strlen(n), hash_key)) < 0) | |
3549 | return -ENOMEM; | |
3550 | ||
3551 | return 0; | |
3552 | } | |
3553 | ||
598459ce LP |
3554 | int unit_patch_contexts(Unit *u) { |
3555 | CGroupContext *cc; | |
3556 | ExecContext *ec; | |
cba6e062 LP |
3557 | unsigned i; |
3558 | int r; | |
3559 | ||
e06c73cc | 3560 | assert(u); |
e06c73cc | 3561 | |
598459ce LP |
3562 | /* Patch in the manager defaults into the exec and cgroup |
3563 | * contexts, _after_ the rest of the settings have been | |
3564 | * initialized */ | |
085afe36 | 3565 | |
598459ce LP |
3566 | ec = unit_get_exec_context(u); |
3567 | if (ec) { | |
3568 | /* This only copies in the ones that need memory */ | |
3569 | for (i = 0; i < _RLIMIT_MAX; i++) | |
3570 | if (u->manager->rlimit[i] && !ec->rlimit[i]) { | |
3571 | ec->rlimit[i] = newdup(struct rlimit, u->manager->rlimit[i], 1); | |
3572 | if (!ec->rlimit[i]) | |
3573 | return -ENOMEM; | |
3574 | } | |
3575 | ||
463d0d15 | 3576 | if (MANAGER_IS_USER(u->manager) && |
598459ce LP |
3577 | !ec->working_directory) { |
3578 | ||
3579 | r = get_home_dir(&ec->working_directory); | |
3580 | if (r < 0) | |
3581 | return r; | |
4c08c824 LP |
3582 | |
3583 | /* Allow user services to run, even if the | |
3584 | * home directory is missing */ | |
3585 | ec->working_directory_missing_ok = true; | |
cba6e062 LP |
3586 | } |
3587 | ||
598459ce | 3588 | if (ec->private_devices) |
2cd0a735 | 3589 | ec->capability_bounding_set &= ~((UINT64_C(1) << CAP_MKNOD) | (UINT64_C(1) << CAP_SYS_RAWIO)); |
502d704e DH |
3590 | |
3591 | if (ec->protect_kernel_modules) | |
3592 | ec->capability_bounding_set &= ~(UINT64_C(1) << CAP_SYS_MODULE); | |
29206d46 LP |
3593 | |
3594 | if (ec->dynamic_user) { | |
3595 | if (!ec->user) { | |
3596 | r = user_from_unit_name(u, &ec->user); | |
3597 | if (r < 0) | |
3598 | return r; | |
3599 | } | |
3600 | ||
3601 | if (!ec->group) { | |
3602 | ec->group = strdup(ec->user); | |
3603 | if (!ec->group) | |
3604 | return -ENOMEM; | |
3605 | } | |
3606 | ||
63bb64a0 LP |
3607 | /* If the dynamic user option is on, let's make sure that the unit can't leave its UID/GID |
3608 | * around in the file system or on IPC objects. Hence enforce a strict sandbox. */ | |
3609 | ||
29206d46 | 3610 | ec->private_tmp = true; |
00d9ef85 | 3611 | ec->remove_ipc = true; |
63bb64a0 LP |
3612 | ec->protect_system = PROTECT_SYSTEM_STRICT; |
3613 | if (ec->protect_home == PROTECT_HOME_NO) | |
3614 | ec->protect_home = PROTECT_HOME_READ_ONLY; | |
29206d46 | 3615 | } |
cba6e062 LP |
3616 | } |
3617 | ||
598459ce LP |
3618 | cc = unit_get_cgroup_context(u); |
3619 | if (cc) { | |
f513e420 | 3620 | |
598459ce LP |
3621 | if (ec && |
3622 | ec->private_devices && | |
3623 | cc->device_policy == CGROUP_AUTO) | |
3624 | cc->device_policy = CGROUP_CLOSED; | |
3625 | } | |
f1660f96 | 3626 | |
cba6e062 | 3627 | return 0; |
e06c73cc LP |
3628 | } |
3629 | ||
3ef63c31 LP |
3630 | ExecContext *unit_get_exec_context(Unit *u) { |
3631 | size_t offset; | |
3632 | assert(u); | |
3633 | ||
598459ce LP |
3634 | if (u->type < 0) |
3635 | return NULL; | |
3636 | ||
3ef63c31 LP |
3637 | offset = UNIT_VTABLE(u)->exec_context_offset; |
3638 | if (offset <= 0) | |
3639 | return NULL; | |
3640 | ||
3641 | return (ExecContext*) ((uint8_t*) u + offset); | |
3642 | } | |
3643 | ||
718db961 LP |
3644 | KillContext *unit_get_kill_context(Unit *u) { |
3645 | size_t offset; | |
3646 | assert(u); | |
3647 | ||
598459ce LP |
3648 | if (u->type < 0) |
3649 | return NULL; | |
3650 | ||
718db961 LP |
3651 | offset = UNIT_VTABLE(u)->kill_context_offset; |
3652 | if (offset <= 0) | |
3653 | return NULL; | |
3654 | ||
3655 | return (KillContext*) ((uint8_t*) u + offset); | |
3656 | } | |
3657 | ||
4ad49000 LP |
3658 | CGroupContext *unit_get_cgroup_context(Unit *u) { |
3659 | size_t offset; | |
3660 | ||
598459ce LP |
3661 | if (u->type < 0) |
3662 | return NULL; | |
3663 | ||
4ad49000 LP |
3664 | offset = UNIT_VTABLE(u)->cgroup_context_offset; |
3665 | if (offset <= 0) | |
3666 | return NULL; | |
3667 | ||
3668 | return (CGroupContext*) ((uint8_t*) u + offset); | |
3669 | } | |
3670 | ||
613b411c LP |
3671 | ExecRuntime *unit_get_exec_runtime(Unit *u) { |
3672 | size_t offset; | |
3673 | ||
598459ce LP |
3674 | if (u->type < 0) |
3675 | return NULL; | |
3676 | ||
613b411c LP |
3677 | offset = UNIT_VTABLE(u)->exec_runtime_offset; |
3678 | if (offset <= 0) | |
3679 | return NULL; | |
3680 | ||
3681 | return *(ExecRuntime**) ((uint8_t*) u + offset); | |
3682 | } | |
3683 | ||
39591351 | 3684 | static const char* unit_drop_in_dir(Unit *u, UnitSetPropertiesMode mode) { |
3f5e8115 LP |
3685 | assert(u); |
3686 | ||
4f4afc88 LP |
3687 | if (!IN_SET(mode, UNIT_RUNTIME, UNIT_PERSISTENT)) |
3688 | return NULL; | |
3689 | ||
39591351 LP |
3690 | if (u->transient) /* Redirect drop-ins for transient units always into the transient directory. */ |
3691 | return u->manager->lookup_paths.transient; | |
26d04f86 | 3692 | |
39591351 | 3693 | if (mode == UNIT_RUNTIME) |
4f4afc88 | 3694 | return u->manager->lookup_paths.runtime_control; |
3f5e8115 | 3695 | |
39591351 | 3696 | if (mode == UNIT_PERSISTENT) |
4f4afc88 | 3697 | return u->manager->lookup_paths.persistent_control; |
26d04f86 | 3698 | |
39591351 | 3699 | return NULL; |
71645aca LP |
3700 | } |
3701 | ||
8e2af478 | 3702 | int unit_write_drop_in(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data) { |
39591351 | 3703 | _cleanup_free_ char *p = NULL, *q = NULL; |
2a9a6f8a | 3704 | const char *dir, *wrapped; |
26d04f86 | 3705 | int r; |
71645aca LP |
3706 | |
3707 | assert(u); | |
3708 | ||
4f4afc88 LP |
3709 | if (u->transient_file) { |
3710 | /* When this is a transient unit file in creation, then let's not create a new drop-in but instead | |
3711 | * write to the transient unit file. */ | |
3712 | fputs(data, u->transient_file); | |
fc40065b | 3713 | fputc('\n', u->transient_file); |
4f4afc88 LP |
3714 | return 0; |
3715 | } | |
3716 | ||
6d235724 | 3717 | if (!IN_SET(mode, UNIT_PERSISTENT, UNIT_RUNTIME)) |
8e2af478 LP |
3718 | return 0; |
3719 | ||
39591351 LP |
3720 | dir = unit_drop_in_dir(u, mode); |
3721 | if (!dir) | |
3722 | return -EINVAL; | |
71645aca | 3723 | |
2a9a6f8a | 3724 | wrapped = strjoina("# This is a drop-in unit file extension, created via \"systemctl set-property\"\n" |
3f71dec5 | 3725 | "# or an equivalent operation. Do not edit.\n", |
2a9a6f8a ZJS |
3726 | data, |
3727 | "\n"); | |
e20b2a86 | 3728 | |
815b09d3 | 3729 | r = drop_in_file(dir, u->id, 50, name, &p, &q); |
adb76a70 WC |
3730 | if (r < 0) |
3731 | return r; | |
3732 | ||
815b09d3 | 3733 | (void) mkdir_p(p, 0755); |
2a9a6f8a | 3734 | r = write_string_file_atomic_label(q, wrapped); |
adb76a70 WC |
3735 | if (r < 0) |
3736 | return r; | |
3737 | ||
815b09d3 | 3738 | r = strv_push(&u->dropin_paths, q); |
adb76a70 WC |
3739 | if (r < 0) |
3740 | return r; | |
815b09d3 | 3741 | q = NULL; |
adb76a70 | 3742 | |
adb76a70 WC |
3743 | strv_uniq(u->dropin_paths); |
3744 | ||
3745 | u->dropin_mtime = now(CLOCK_REALTIME); | |
3746 | ||
3747 | return 0; | |
26d04f86 | 3748 | } |
71645aca | 3749 | |
b9ec9359 LP |
3750 | int unit_write_drop_in_format(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *format, ...) { |
3751 | _cleanup_free_ char *p = NULL; | |
3752 | va_list ap; | |
3753 | int r; | |
3754 | ||
3755 | assert(u); | |
3756 | assert(name); | |
3757 | assert(format); | |
3758 | ||
6d235724 | 3759 | if (!IN_SET(mode, UNIT_PERSISTENT, UNIT_RUNTIME)) |
b9ec9359 LP |
3760 | return 0; |
3761 | ||
3762 | va_start(ap, format); | |
3763 | r = vasprintf(&p, format, ap); | |
3764 | va_end(ap); | |
3765 | ||
3766 | if (r < 0) | |
3767 | return -ENOMEM; | |
3768 | ||
3769 | return unit_write_drop_in(u, mode, name, p); | |
3770 | } | |
3771 | ||
3772 | int unit_write_drop_in_private(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data) { | |
39591351 | 3773 | const char *ndata; |
b42defe3 LP |
3774 | |
3775 | assert(u); | |
3776 | assert(name); | |
3777 | assert(data); | |
3778 | ||
3779 | if (!UNIT_VTABLE(u)->private_section) | |
3780 | return -EINVAL; | |
3781 | ||
6d235724 | 3782 | if (!IN_SET(mode, UNIT_PERSISTENT, UNIT_RUNTIME)) |
b9ec9359 LP |
3783 | return 0; |
3784 | ||
81d62103 | 3785 | ndata = strjoina("[", UNIT_VTABLE(u)->private_section, "]\n", data); |
b42defe3 LP |
3786 | |
3787 | return unit_write_drop_in(u, mode, name, ndata); | |
3788 | } | |
3789 | ||
b9ec9359 LP |
3790 | int unit_write_drop_in_private_format(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *format, ...) { |
3791 | _cleanup_free_ char *p = NULL; | |
3792 | va_list ap; | |
3793 | int r; | |
3794 | ||
3795 | assert(u); | |
3796 | assert(name); | |
3797 | assert(format); | |
3798 | ||
6d235724 | 3799 | if (!IN_SET(mode, UNIT_PERSISTENT, UNIT_RUNTIME)) |
b9ec9359 LP |
3800 | return 0; |
3801 | ||
3802 | va_start(ap, format); | |
3803 | r = vasprintf(&p, format, ap); | |
3804 | va_end(ap); | |
3805 | ||
3806 | if (r < 0) | |
3807 | return -ENOMEM; | |
3808 | ||
3809 | return unit_write_drop_in_private(u, mode, name, p); | |
3810 | } | |
71645aca | 3811 | |
c2756a68 | 3812 | int unit_make_transient(Unit *u) { |
4f4afc88 LP |
3813 | FILE *f; |
3814 | char *path; | |
3815 | ||
c2756a68 LP |
3816 | assert(u); |
3817 | ||
3f5e8115 LP |
3818 | if (!UNIT_VTABLE(u)->can_transient) |
3819 | return -EOPNOTSUPP; | |
3820 | ||
605405c6 | 3821 | path = strjoin(u->manager->lookup_paths.transient, "/", u->id); |
4f4afc88 LP |
3822 | if (!path) |
3823 | return -ENOMEM; | |
3824 | ||
3825 | /* Let's open the file we'll write the transient settings into. This file is kept open as long as we are | |
3826 | * creating the transient, and is closed in unit_load(), as soon as we start loading the file. */ | |
3827 | ||
78e334b5 | 3828 | RUN_WITH_UMASK(0022) { |
4f4afc88 | 3829 | f = fopen(path, "we"); |
78e334b5 ZJS |
3830 | if (!f) { |
3831 | free(path); | |
3832 | return -errno; | |
3833 | } | |
4f4afc88 LP |
3834 | } |
3835 | ||
3836 | if (u->transient_file) | |
3837 | fclose(u->transient_file); | |
3838 | u->transient_file = f; | |
3839 | ||
3840 | free(u->fragment_path); | |
3841 | u->fragment_path = path; | |
7c65093a | 3842 | |
7c65093a LP |
3843 | u->source_path = mfree(u->source_path); |
3844 | u->dropin_paths = strv_free(u->dropin_paths); | |
3845 | u->fragment_mtime = u->source_mtime = u->dropin_mtime = 0; | |
3846 | ||
4f4afc88 LP |
3847 | u->load_state = UNIT_STUB; |
3848 | u->load_error = 0; | |
3849 | u->transient = true; | |
3850 | ||
7c65093a LP |
3851 | unit_add_to_dbus_queue(u); |
3852 | unit_add_to_gc_queue(u); | |
c2756a68 | 3853 | |
4f4afc88 LP |
3854 | fputs("# This is a transient unit file, created programmatically via the systemd API. Do not edit.\n", |
3855 | u->transient_file); | |
3856 | ||
3f5e8115 | 3857 | return 0; |
c2756a68 LP |
3858 | } |
3859 | ||
1d98fef1 LP |
3860 | static void log_kill(pid_t pid, int sig, void *userdata) { |
3861 | _cleanup_free_ char *comm = NULL; | |
3862 | ||
3863 | (void) get_process_comm(pid, &comm); | |
3864 | ||
3865 | /* Don't log about processes marked with brackets, under the assumption that these are temporary processes | |
3866 | only, like for example systemd's own PAM stub process. */ | |
3867 | if (comm && comm[0] == '(') | |
3868 | return; | |
3869 | ||
3870 | log_unit_notice(userdata, | |
3871 | "Killing process " PID_FMT " (%s) with signal SIG%s.", | |
3872 | pid, | |
3873 | strna(comm), | |
3874 | signal_to_string(sig)); | |
3875 | } | |
3876 | ||
3877 | static int operation_to_signal(KillContext *c, KillOperation k) { | |
3878 | assert(c); | |
3879 | ||
3880 | switch (k) { | |
3881 | ||
3882 | case KILL_TERMINATE: | |
3883 | case KILL_TERMINATE_AND_LOG: | |
3884 | return c->kill_signal; | |
3885 | ||
3886 | case KILL_KILL: | |
3887 | return SIGKILL; | |
3888 | ||
3889 | case KILL_ABORT: | |
3890 | return SIGABRT; | |
3891 | ||
3892 | default: | |
3893 | assert_not_reached("KillOperation unknown"); | |
3894 | } | |
3895 | } | |
3896 | ||
cd2086fe LP |
3897 | int unit_kill_context( |
3898 | Unit *u, | |
3899 | KillContext *c, | |
db2cb23b | 3900 | KillOperation k, |
cd2086fe LP |
3901 | pid_t main_pid, |
3902 | pid_t control_pid, | |
3903 | bool main_pid_alien) { | |
3904 | ||
1d98fef1 | 3905 | bool wait_for_exit = false, send_sighup; |
59ec09a8 | 3906 | cg_kill_log_func_t log_func = NULL; |
b821a397 | 3907 | int sig, r; |
cd2086fe LP |
3908 | |
3909 | assert(u); | |
3910 | assert(c); | |
3911 | ||
59ec09a8 ZJS |
3912 | /* Kill the processes belonging to this unit, in preparation for shutting the unit down. |
3913 | * Returns > 0 if we killed something worth waiting for, 0 otherwise. */ | |
1d98fef1 | 3914 | |
cd2086fe LP |
3915 | if (c->kill_mode == KILL_NONE) |
3916 | return 0; | |
3917 | ||
1d98fef1 LP |
3918 | sig = operation_to_signal(c, k); |
3919 | ||
3920 | send_sighup = | |
3921 | c->send_sighup && | |
3922 | IN_SET(k, KILL_TERMINATE, KILL_TERMINATE_AND_LOG) && | |
3923 | sig != SIGHUP; | |
3924 | ||
59ec09a8 ZJS |
3925 | if (k != KILL_TERMINATE || IN_SET(sig, SIGKILL, SIGABRT)) |
3926 | log_func = log_kill; | |
cd2086fe LP |
3927 | |
3928 | if (main_pid > 0) { | |
1d98fef1 LP |
3929 | if (log_func) |
3930 | log_func(main_pid, sig, u); | |
cd2086fe | 3931 | |
1d98fef1 | 3932 | r = kill_and_sigcont(main_pid, sig); |
cd2086fe LP |
3933 | if (r < 0 && r != -ESRCH) { |
3934 | _cleanup_free_ char *comm = NULL; | |
1d98fef1 | 3935 | (void) get_process_comm(main_pid, &comm); |
cd2086fe | 3936 | |
b821a397 | 3937 | log_unit_warning_errno(u, r, "Failed to kill main process " PID_FMT " (%s), ignoring: %m", main_pid, strna(comm)); |
82659fd7 | 3938 | } else { |
bc6aed7b LP |
3939 | if (!main_pid_alien) |
3940 | wait_for_exit = true; | |
82659fd7 | 3941 | |
1d98fef1 | 3942 | if (r != -ESRCH && send_sighup) |
d0667321 | 3943 | (void) kill(main_pid, SIGHUP); |
82659fd7 | 3944 | } |
cd2086fe LP |
3945 | } |
3946 | ||
3947 | if (control_pid > 0) { | |
1d98fef1 LP |
3948 | if (log_func) |
3949 | log_func(control_pid, sig, u); | |
cd2086fe | 3950 | |
1d98fef1 | 3951 | r = kill_and_sigcont(control_pid, sig); |
cd2086fe LP |
3952 | if (r < 0 && r != -ESRCH) { |
3953 | _cleanup_free_ char *comm = NULL; | |
1d98fef1 | 3954 | (void) get_process_comm(control_pid, &comm); |
cd2086fe | 3955 | |
b821a397 | 3956 | log_unit_warning_errno(u, r, "Failed to kill control process " PID_FMT " (%s), ignoring: %m", control_pid, strna(comm)); |
82659fd7 | 3957 | } else { |
cd2086fe | 3958 | wait_for_exit = true; |
82659fd7 | 3959 | |
1d98fef1 | 3960 | if (r != -ESRCH && send_sighup) |
d0667321 | 3961 | (void) kill(control_pid, SIGHUP); |
82659fd7 | 3962 | } |
cd2086fe LP |
3963 | } |
3964 | ||
b821a397 LP |
3965 | if (u->cgroup_path && |
3966 | (c->kill_mode == KILL_CONTROL_GROUP || (c->kill_mode == KILL_MIXED && k == KILL_KILL))) { | |
cd2086fe LP |
3967 | _cleanup_set_free_ Set *pid_set = NULL; |
3968 | ||
82659fd7 LP |
3969 | /* Exclude the main/control pids from being killed via the cgroup */ |
3970 | pid_set = unit_pid_set(main_pid, control_pid); | |
cd2086fe LP |
3971 | if (!pid_set) |
3972 | return -ENOMEM; | |
3973 | ||
1d98fef1 LP |
3974 | r = cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, |
3975 | sig, | |
3976 | CGROUP_SIGCONT|CGROUP_IGNORE_SELF, | |
3977 | pid_set, | |
3978 | log_func, u); | |
cd2086fe LP |
3979 | if (r < 0) { |
3980 | if (r != -EAGAIN && r != -ESRCH && r != -ENOENT) | |
b821a397 LP |
3981 | log_unit_warning_errno(u, r, "Failed to kill control group %s, ignoring: %m", u->cgroup_path); |
3982 | ||
82659fd7 | 3983 | } else if (r > 0) { |
bc6aed7b | 3984 | |
efdb0237 LP |
3985 | /* FIXME: For now, on the legacy hierarchy, we |
3986 | * will not wait for the cgroup members to die | |
3987 | * if we are running in a container or if this | |
3988 | * is a delegation unit, simply because cgroup | |
3989 | * notification is unreliable in these | |
3990 | * cases. It doesn't work at all in | |
3991 | * containers, and outside of containers it | |
3992 | * can be confused easily by left-over | |
ccddd104 | 3993 | * directories in the cgroup — which however |
efdb0237 LP |
3994 | * should not exist in non-delegated units. On |
3995 | * the unified hierarchy that's different, | |
3996 | * there we get proper events. Hence rely on | |
13e785f7 | 3997 | * them. */ |
efdb0237 | 3998 | |
c22800e4 | 3999 | if (cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER) > 0 || |
415fc41c | 4000 | (detect_container() == 0 && !unit_cgroup_delegate(u))) |
e9db43d5 | 4001 | wait_for_exit = true; |
58ea275a | 4002 | |
1d98fef1 | 4003 | if (send_sighup) { |
82659fd7 LP |
4004 | set_free(pid_set); |
4005 | ||
4006 | pid_set = unit_pid_set(main_pid, control_pid); | |
4007 | if (!pid_set) | |
4008 | return -ENOMEM; | |
4009 | ||
1d98fef1 LP |
4010 | cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, |
4011 | SIGHUP, | |
4012 | CGROUP_IGNORE_SELF, | |
4013 | pid_set, | |
4014 | NULL, NULL); | |
82659fd7 LP |
4015 | } |
4016 | } | |
cd2086fe LP |
4017 | } |
4018 | ||
4019 | return wait_for_exit; | |
4020 | } | |
4021 | ||
a57f7e2c LP |
4022 | int unit_require_mounts_for(Unit *u, const char *path) { |
4023 | char prefix[strlen(path) + 1], *p; | |
4024 | int r; | |
4025 | ||
4026 | assert(u); | |
4027 | assert(path); | |
4028 | ||
4029 | /* Registers a unit for requiring a certain path and all its | |
4030 | * prefixes. We keep a simple array of these paths in the | |
4031 | * unit, since its usually short. However, we build a prefix | |
4032 | * table for all possible prefixes so that new appearing mount | |
4033 | * units can easily determine which units to make themselves a | |
4034 | * dependency of. */ | |
4035 | ||
70b64bd3 ZJS |
4036 | if (!path_is_absolute(path)) |
4037 | return -EINVAL; | |
4038 | ||
a57f7e2c LP |
4039 | p = strdup(path); |
4040 | if (!p) | |
4041 | return -ENOMEM; | |
4042 | ||
4043 | path_kill_slashes(p); | |
4044 | ||
a57f7e2c LP |
4045 | if (!path_is_safe(p)) { |
4046 | free(p); | |
4047 | return -EPERM; | |
4048 | } | |
4049 | ||
4050 | if (strv_contains(u->requires_mounts_for, p)) { | |
4051 | free(p); | |
4052 | return 0; | |
4053 | } | |
4054 | ||
6e18964d ZJS |
4055 | r = strv_consume(&u->requires_mounts_for, p); |
4056 | if (r < 0) | |
a57f7e2c | 4057 | return r; |
a57f7e2c LP |
4058 | |
4059 | PATH_FOREACH_PREFIX_MORE(prefix, p) { | |
4060 | Set *x; | |
4061 | ||
4062 | x = hashmap_get(u->manager->units_requiring_mounts_for, prefix); | |
4063 | if (!x) { | |
4064 | char *q; | |
4065 | ||
742f41ad LP |
4066 | r = hashmap_ensure_allocated(&u->manager->units_requiring_mounts_for, &string_hash_ops); |
4067 | if (r < 0) | |
4068 | return r; | |
a57f7e2c LP |
4069 | |
4070 | q = strdup(prefix); | |
4071 | if (!q) | |
4072 | return -ENOMEM; | |
4073 | ||
d5099efc | 4074 | x = set_new(NULL); |
a57f7e2c LP |
4075 | if (!x) { |
4076 | free(q); | |
4077 | return -ENOMEM; | |
4078 | } | |
4079 | ||
4080 | r = hashmap_put(u->manager->units_requiring_mounts_for, q, x); | |
4081 | if (r < 0) { | |
4082 | free(q); | |
4083 | set_free(x); | |
4084 | return r; | |
4085 | } | |
4086 | } | |
4087 | ||
4088 | r = set_put(x, u); | |
4089 | if (r < 0) | |
4090 | return r; | |
4091 | } | |
4092 | ||
4093 | return 0; | |
4094 | } | |
4095 | ||
613b411c LP |
4096 | int unit_setup_exec_runtime(Unit *u) { |
4097 | ExecRuntime **rt; | |
4098 | size_t offset; | |
4099 | Iterator i; | |
4100 | Unit *other; | |
4101 | ||
4102 | offset = UNIT_VTABLE(u)->exec_runtime_offset; | |
4103 | assert(offset > 0); | |
4104 | ||
06b643e7 | 4105 | /* Check if there already is an ExecRuntime for this unit? */ |
613b411c LP |
4106 | rt = (ExecRuntime**) ((uint8_t*) u + offset); |
4107 | if (*rt) | |
4108 | return 0; | |
4109 | ||
4110 | /* Try to get it from somebody else */ | |
4111 | SET_FOREACH(other, u->dependencies[UNIT_JOINS_NAMESPACE_OF], i) { | |
4112 | ||
4113 | *rt = unit_get_exec_runtime(other); | |
4114 | if (*rt) { | |
4115 | exec_runtime_ref(*rt); | |
4116 | return 0; | |
4117 | } | |
4118 | } | |
4119 | ||
4120 | return exec_runtime_make(rt, unit_get_exec_context(u), u->id); | |
4121 | } | |
4122 | ||
29206d46 LP |
4123 | int unit_setup_dynamic_creds(Unit *u) { |
4124 | ExecContext *ec; | |
4125 | DynamicCreds *dcreds; | |
4126 | size_t offset; | |
4127 | ||
4128 | assert(u); | |
4129 | ||
4130 | offset = UNIT_VTABLE(u)->dynamic_creds_offset; | |
4131 | assert(offset > 0); | |
4132 | dcreds = (DynamicCreds*) ((uint8_t*) u + offset); | |
4133 | ||
4134 | ec = unit_get_exec_context(u); | |
4135 | assert(ec); | |
4136 | ||
4137 | if (!ec->dynamic_user) | |
4138 | return 0; | |
4139 | ||
4140 | return dynamic_creds_acquire(dcreds, u->manager, ec->user, ec->group); | |
4141 | } | |
4142 | ||
1c2e9646 LP |
4143 | bool unit_type_supported(UnitType t) { |
4144 | if (_unlikely_(t < 0)) | |
4145 | return false; | |
4146 | if (_unlikely_(t >= _UNIT_TYPE_MAX)) | |
4147 | return false; | |
4148 | ||
4149 | if (!unit_vtable[t]->supported) | |
4150 | return true; | |
4151 | ||
4152 | return unit_vtable[t]->supported(); | |
4153 | } | |
4154 | ||
8b4305c7 LP |
4155 | void unit_warn_if_dir_nonempty(Unit *u, const char* where) { |
4156 | int r; | |
4157 | ||
4158 | assert(u); | |
4159 | assert(where); | |
4160 | ||
4161 | r = dir_is_empty(where); | |
4162 | if (r > 0) | |
4163 | return; | |
4164 | if (r < 0) { | |
4165 | log_unit_warning_errno(u, r, "Failed to check directory %s: %m", where); | |
4166 | return; | |
4167 | } | |
4168 | ||
4169 | log_struct(LOG_NOTICE, | |
2b044526 | 4170 | "MESSAGE_ID=" SD_MESSAGE_OVERMOUNTING_STR, |
8b4305c7 LP |
4171 | LOG_UNIT_ID(u), |
4172 | LOG_UNIT_MESSAGE(u, "Directory %s to mount over is not empty, mounting anyway.", where), | |
4173 | "WHERE=%s", where, | |
4174 | NULL); | |
4175 | } | |
4176 | ||
4177 | int unit_fail_if_symlink(Unit *u, const char* where) { | |
4178 | int r; | |
4179 | ||
4180 | assert(u); | |
4181 | assert(where); | |
4182 | ||
4183 | r = is_symlink(where); | |
4184 | if (r < 0) { | |
4185 | log_unit_debug_errno(u, r, "Failed to check symlink %s, ignoring: %m", where); | |
4186 | return 0; | |
4187 | } | |
4188 | if (r == 0) | |
4189 | return 0; | |
4190 | ||
4191 | log_struct(LOG_ERR, | |
2b044526 | 4192 | "MESSAGE_ID=" SD_MESSAGE_OVERMOUNTING_STR, |
8b4305c7 LP |
4193 | LOG_UNIT_ID(u), |
4194 | LOG_UNIT_MESSAGE(u, "Mount on symlink %s not allowed.", where), | |
4195 | "WHERE=%s", where, | |
4196 | NULL); | |
4197 | ||
4198 | return -ELOOP; | |
4199 | } | |
0f13f3bd LP |
4200 | |
4201 | bool unit_is_pristine(Unit *u) { | |
4202 | assert(u); | |
4203 | ||
7c65093a | 4204 | /* Check if the unit already exists or is already around, |
0f13f3bd LP |
4205 | * in a number of different ways. Note that to cater for unit |
4206 | * types such as slice, we are generally fine with units that | |
61233823 | 4207 | * are marked UNIT_LOADED even though nothing was |
0f13f3bd LP |
4208 | * actually loaded, as those unit types don't require a file |
4209 | * on disk to validly load. */ | |
4210 | ||
4211 | return !(!IN_SET(u->load_state, UNIT_NOT_FOUND, UNIT_LOADED) || | |
4212 | u->fragment_path || | |
4213 | u->source_path || | |
4214 | !strv_isempty(u->dropin_paths) || | |
0f13f3bd LP |
4215 | u->job || |
4216 | u->merged_into); | |
4217 | } | |
291d565a LP |
4218 | |
4219 | pid_t unit_control_pid(Unit *u) { | |
4220 | assert(u); | |
4221 | ||
4222 | if (UNIT_VTABLE(u)->control_pid) | |
4223 | return UNIT_VTABLE(u)->control_pid(u); | |
4224 | ||
4225 | return 0; | |
4226 | } | |
4227 | ||
4228 | pid_t unit_main_pid(Unit *u) { | |
4229 | assert(u); | |
4230 | ||
4231 | if (UNIT_VTABLE(u)->main_pid) | |
4232 | return UNIT_VTABLE(u)->main_pid(u); | |
4233 | ||
4234 | return 0; | |
4235 | } | |
00d9ef85 LP |
4236 | |
4237 | static void unit_unref_uid_internal( | |
4238 | Unit *u, | |
4239 | uid_t *ref_uid, | |
4240 | bool destroy_now, | |
4241 | void (*_manager_unref_uid)(Manager *m, uid_t uid, bool destroy_now)) { | |
4242 | ||
4243 | assert(u); | |
4244 | assert(ref_uid); | |
4245 | assert(_manager_unref_uid); | |
4246 | ||
4247 | /* Generic implementation of both unit_unref_uid() and unit_unref_gid(), under the assumption that uid_t and | |
4248 | * gid_t are actually the same time, with the same validity rules. | |
4249 | * | |
4250 | * Drops a reference to UID/GID from a unit. */ | |
4251 | ||
4252 | assert_cc(sizeof(uid_t) == sizeof(gid_t)); | |
4253 | assert_cc(UID_INVALID == (uid_t) GID_INVALID); | |
4254 | ||
4255 | if (!uid_is_valid(*ref_uid)) | |
4256 | return; | |
4257 | ||
4258 | _manager_unref_uid(u->manager, *ref_uid, destroy_now); | |
4259 | *ref_uid = UID_INVALID; | |
4260 | } | |
4261 | ||
4262 | void unit_unref_uid(Unit *u, bool destroy_now) { | |
4263 | unit_unref_uid_internal(u, &u->ref_uid, destroy_now, manager_unref_uid); | |
4264 | } | |
4265 | ||
4266 | void unit_unref_gid(Unit *u, bool destroy_now) { | |
4267 | unit_unref_uid_internal(u, (uid_t*) &u->ref_gid, destroy_now, manager_unref_gid); | |
4268 | } | |
4269 | ||
4270 | static int unit_ref_uid_internal( | |
4271 | Unit *u, | |
4272 | uid_t *ref_uid, | |
4273 | uid_t uid, | |
4274 | bool clean_ipc, | |
4275 | int (*_manager_ref_uid)(Manager *m, uid_t uid, bool clean_ipc)) { | |
4276 | ||
4277 | int r; | |
4278 | ||
4279 | assert(u); | |
4280 | assert(ref_uid); | |
4281 | assert(uid_is_valid(uid)); | |
4282 | assert(_manager_ref_uid); | |
4283 | ||
4284 | /* Generic implementation of both unit_ref_uid() and unit_ref_guid(), under the assumption that uid_t and gid_t | |
4285 | * are actually the same type, and have the same validity rules. | |
4286 | * | |
4287 | * Adds a reference on a specific UID/GID to this unit. Each unit referencing the same UID/GID maintains a | |
4288 | * reference so that we can destroy the UID/GID's IPC resources as soon as this is requested and the counter | |
4289 | * drops to zero. */ | |
4290 | ||
4291 | assert_cc(sizeof(uid_t) == sizeof(gid_t)); | |
4292 | assert_cc(UID_INVALID == (uid_t) GID_INVALID); | |
4293 | ||
4294 | if (*ref_uid == uid) | |
4295 | return 0; | |
4296 | ||
4297 | if (uid_is_valid(*ref_uid)) /* Already set? */ | |
4298 | return -EBUSY; | |
4299 | ||
4300 | r = _manager_ref_uid(u->manager, uid, clean_ipc); | |
4301 | if (r < 0) | |
4302 | return r; | |
4303 | ||
4304 | *ref_uid = uid; | |
4305 | return 1; | |
4306 | } | |
4307 | ||
4308 | int unit_ref_uid(Unit *u, uid_t uid, bool clean_ipc) { | |
4309 | return unit_ref_uid_internal(u, &u->ref_uid, uid, clean_ipc, manager_ref_uid); | |
4310 | } | |
4311 | ||
4312 | int unit_ref_gid(Unit *u, gid_t gid, bool clean_ipc) { | |
4313 | return unit_ref_uid_internal(u, (uid_t*) &u->ref_gid, (uid_t) gid, clean_ipc, manager_ref_gid); | |
4314 | } | |
4315 | ||
4316 | static int unit_ref_uid_gid_internal(Unit *u, uid_t uid, gid_t gid, bool clean_ipc) { | |
4317 | int r = 0, q = 0; | |
4318 | ||
4319 | assert(u); | |
4320 | ||
4321 | /* Reference both a UID and a GID in one go. Either references both, or neither. */ | |
4322 | ||
4323 | if (uid_is_valid(uid)) { | |
4324 | r = unit_ref_uid(u, uid, clean_ipc); | |
4325 | if (r < 0) | |
4326 | return r; | |
4327 | } | |
4328 | ||
4329 | if (gid_is_valid(gid)) { | |
4330 | q = unit_ref_gid(u, gid, clean_ipc); | |
4331 | if (q < 0) { | |
4332 | if (r > 0) | |
4333 | unit_unref_uid(u, false); | |
4334 | ||
4335 | return q; | |
4336 | } | |
4337 | } | |
4338 | ||
4339 | return r > 0 || q > 0; | |
4340 | } | |
4341 | ||
4342 | int unit_ref_uid_gid(Unit *u, uid_t uid, gid_t gid) { | |
4343 | ExecContext *c; | |
4344 | int r; | |
4345 | ||
4346 | assert(u); | |
4347 | ||
4348 | c = unit_get_exec_context(u); | |
4349 | ||
4350 | r = unit_ref_uid_gid_internal(u, uid, gid, c ? c->remove_ipc : false); | |
4351 | if (r < 0) | |
4352 | return log_unit_warning_errno(u, r, "Couldn't add UID/GID reference to unit, proceeding without: %m"); | |
4353 | ||
4354 | return r; | |
4355 | } | |
4356 | ||
4357 | void unit_unref_uid_gid(Unit *u, bool destroy_now) { | |
4358 | assert(u); | |
4359 | ||
4360 | unit_unref_uid(u, destroy_now); | |
4361 | unit_unref_gid(u, destroy_now); | |
4362 | } | |
4363 | ||
4364 | void unit_notify_user_lookup(Unit *u, uid_t uid, gid_t gid) { | |
4365 | int r; | |
4366 | ||
4367 | assert(u); | |
4368 | ||
4369 | /* This is invoked whenever one of the forked off processes let's us know the UID/GID its user name/group names | |
4370 | * resolved to. We keep track of which UID/GID is currently assigned in order to be able to destroy its IPC | |
4371 | * objects when no service references the UID/GID anymore. */ | |
4372 | ||
4373 | r = unit_ref_uid_gid(u, uid, gid); | |
4374 | if (r > 0) | |
4375 | bus_unit_send_change_signal(u); | |
4376 | } | |
4b58153d LP |
4377 | |
4378 | int unit_set_invocation_id(Unit *u, sd_id128_t id) { | |
4379 | int r; | |
4380 | ||
4381 | assert(u); | |
4382 | ||
4383 | /* Set the invocation ID for this unit. If we cannot, this will not roll back, but reset the whole thing. */ | |
4384 | ||
4385 | if (sd_id128_equal(u->invocation_id, id)) | |
4386 | return 0; | |
4387 | ||
4388 | if (!sd_id128_is_null(u->invocation_id)) | |
4389 | (void) hashmap_remove_value(u->manager->units_by_invocation_id, &u->invocation_id, u); | |
4390 | ||
4391 | if (sd_id128_is_null(id)) { | |
4392 | r = 0; | |
4393 | goto reset; | |
4394 | } | |
4395 | ||
4396 | r = hashmap_ensure_allocated(&u->manager->units_by_invocation_id, &id128_hash_ops); | |
4397 | if (r < 0) | |
4398 | goto reset; | |
4399 | ||
4400 | u->invocation_id = id; | |
4401 | sd_id128_to_string(id, u->invocation_id_string); | |
4402 | ||
4403 | r = hashmap_put(u->manager->units_by_invocation_id, &u->invocation_id, u); | |
4404 | if (r < 0) | |
4405 | goto reset; | |
4406 | ||
4407 | return 0; | |
4408 | ||
4409 | reset: | |
4410 | u->invocation_id = SD_ID128_NULL; | |
4411 | u->invocation_id_string[0] = 0; | |
4412 | return r; | |
4413 | } | |
4414 | ||
4415 | int unit_acquire_invocation_id(Unit *u) { | |
4416 | sd_id128_t id; | |
4417 | int r; | |
4418 | ||
4419 | assert(u); | |
4420 | ||
4421 | r = sd_id128_randomize(&id); | |
4422 | if (r < 0) | |
4423 | return log_unit_error_errno(u, r, "Failed to generate invocation ID for unit: %m"); | |
4424 | ||
4425 | r = unit_set_invocation_id(u, id); | |
4426 | if (r < 0) | |
4427 | return log_unit_error_errno(u, r, "Failed to set invocation ID for unit: %m"); | |
4428 | ||
4429 | return 0; | |
4430 | } | |
f0d47797 LP |
4431 | |
4432 | void unit_set_exec_params(Unit *s, ExecParameters *p) { | |
4433 | CGroupContext *c; | |
4434 | ||
4435 | assert(s); | |
4436 | assert(s); | |
4437 | ||
4438 | p->cgroup_path = s->cgroup_path; | |
4439 | ||
4440 | c = unit_get_cgroup_context(s); | |
4441 | SET_FLAG(p->flags, EXEC_CGROUP_DELEGATE, c && c->delegate); | |
4442 | } |