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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" | |
6a48d82f | 38 | #include "fd-util.h" |
a5c32cff | 39 | #include "fileio-label.h" |
f97b34a6 | 40 | #include "format-util.h" |
4b58153d | 41 | #include "id128-util.h" |
4f5dd394 LP |
42 | #include "load-dropin.h" |
43 | #include "load-fragment.h" | |
44 | #include "log.h" | |
45 | #include "macro.h" | |
46 | #include "missing.h" | |
47 | #include "mkdir.h" | |
6bedfcbb | 48 | #include "parse-util.h" |
4f5dd394 | 49 | #include "path-util.h" |
0b452006 | 50 | #include "process-util.h" |
4f5dd394 | 51 | #include "set.h" |
6eb7c172 | 52 | #include "signal-util.h" |
e9db43d5 | 53 | #include "special.h" |
8fcde012 | 54 | #include "stat-util.h" |
d054f0a4 | 55 | #include "stdio-util.h" |
07630cea | 56 | #include "string-util.h" |
4f5dd394 | 57 | #include "strv.h" |
4f4afc88 | 58 | #include "umask-util.h" |
4f5dd394 | 59 | #include "unit-name.h" |
e9db43d5 | 60 | #include "unit.h" |
b1d4f8e1 LP |
61 | #include "user-util.h" |
62 | #include "virt.h" | |
87f0e418 LP |
63 | |
64 | const UnitVTable * const unit_vtable[_UNIT_TYPE_MAX] = { | |
65 | [UNIT_SERVICE] = &service_vtable, | |
87f0e418 LP |
66 | [UNIT_SOCKET] = &socket_vtable, |
67 | [UNIT_TARGET] = &target_vtable, | |
68 | [UNIT_DEVICE] = &device_vtable, | |
69 | [UNIT_MOUNT] = &mount_vtable, | |
70 | [UNIT_AUTOMOUNT] = &automount_vtable, | |
01f78473 | 71 | [UNIT_SWAP] = &swap_vtable, |
e821075a | 72 | [UNIT_TIMER] = &timer_vtable, |
a016b922 | 73 | [UNIT_PATH] = &path_vtable, |
6c12b52e LP |
74 | [UNIT_SLICE] = &slice_vtable, |
75 | [UNIT_SCOPE] = &scope_vtable | |
87f0e418 LP |
76 | }; |
77 | ||
f2341e0a | 78 | static void maybe_warn_about_dependency(Unit *u, const char *other, UnitDependency dependency); |
d1fab3fe | 79 | |
7d17cfbc | 80 | Unit *unit_new(Manager *m, size_t size) { |
87f0e418 LP |
81 | Unit *u; |
82 | ||
83 | assert(m); | |
ac155bb8 | 84 | assert(size >= sizeof(Unit)); |
87f0e418 | 85 | |
7d17cfbc MS |
86 | u = malloc0(size); |
87 | if (!u) | |
87f0e418 LP |
88 | return NULL; |
89 | ||
d5099efc | 90 | u->names = set_new(&string_hash_ops); |
6b430fdb ZJS |
91 | if (!u->names) |
92 | return mfree(u); | |
87f0e418 | 93 | |
ac155bb8 MS |
94 | u->manager = m; |
95 | u->type = _UNIT_TYPE_INVALID; | |
ac155bb8 MS |
96 | u->default_dependencies = true; |
97 | u->unit_file_state = _UNIT_FILE_STATE_INVALID; | |
d2dc52db | 98 | u->unit_file_preset = -1; |
d420282b | 99 | u->on_failure_job_mode = JOB_REPLACE; |
efdb0237 | 100 | u->cgroup_inotify_wd = -1; |
36c16a7c | 101 | u->job_timeout = USEC_INFINITY; |
a2df3ea4 | 102 | u->job_running_timeout = USEC_INFINITY; |
00d9ef85 LP |
103 | u->ref_uid = UID_INVALID; |
104 | u->ref_gid = GID_INVALID; | |
fe700f46 | 105 | u->cpu_usage_last = NSEC_INFINITY; |
87f0e418 | 106 | |
6a48d82f DM |
107 | u->ip_accounting_ingress_map_fd = -1; |
108 | u->ip_accounting_egress_map_fd = -1; | |
109 | u->ipv4_allow_map_fd = -1; | |
110 | u->ipv6_allow_map_fd = -1; | |
111 | u->ipv4_deny_map_fd = -1; | |
112 | u->ipv6_deny_map_fd = -1; | |
113 | ||
6bf0f408 | 114 | RATELIMIT_INIT(u->start_limit, m->default_start_limit_interval, m->default_start_limit_burst); |
67bfdc97 | 115 | RATELIMIT_INIT(u->auto_stop_ratelimit, 10 * USEC_PER_SEC, 16); |
bea355da | 116 | |
87f0e418 LP |
117 | return u; |
118 | } | |
119 | ||
a581e45a LP |
120 | int unit_new_for_name(Manager *m, size_t size, const char *name, Unit **ret) { |
121 | Unit *u; | |
122 | int r; | |
123 | ||
124 | u = unit_new(m, size); | |
125 | if (!u) | |
126 | return -ENOMEM; | |
127 | ||
128 | r = unit_add_name(u, name); | |
129 | if (r < 0) { | |
130 | unit_free(u); | |
131 | return r; | |
132 | } | |
133 | ||
134 | *ret = u; | |
135 | return r; | |
136 | } | |
137 | ||
f278026d LP |
138 | bool unit_has_name(Unit *u, const char *name) { |
139 | assert(u); | |
140 | assert(name); | |
141 | ||
390bc2b1 | 142 | return set_contains(u->names, (char*) name); |
f278026d LP |
143 | } |
144 | ||
598459ce LP |
145 | static void unit_init(Unit *u) { |
146 | CGroupContext *cc; | |
147 | ExecContext *ec; | |
148 | KillContext *kc; | |
149 | ||
150 | assert(u); | |
151 | assert(u->manager); | |
152 | assert(u->type >= 0); | |
153 | ||
154 | cc = unit_get_cgroup_context(u); | |
155 | if (cc) { | |
156 | cgroup_context_init(cc); | |
157 | ||
158 | /* Copy in the manager defaults into the cgroup | |
159 | * context, _before_ the rest of the settings have | |
160 | * been initialized */ | |
161 | ||
162 | cc->cpu_accounting = u->manager->default_cpu_accounting; | |
13c31542 | 163 | cc->io_accounting = u->manager->default_io_accounting; |
598459ce LP |
164 | cc->blockio_accounting = u->manager->default_blockio_accounting; |
165 | cc->memory_accounting = u->manager->default_memory_accounting; | |
03a7b521 | 166 | cc->tasks_accounting = u->manager->default_tasks_accounting; |
6a48d82f | 167 | cc->ip_accounting = u->manager->default_ip_accounting; |
0af20ea2 LP |
168 | |
169 | if (u->type != UNIT_SLICE) | |
170 | cc->tasks_max = u->manager->default_tasks_max; | |
598459ce LP |
171 | } |
172 | ||
173 | ec = unit_get_exec_context(u); | |
b1edf445 | 174 | if (ec) { |
598459ce LP |
175 | exec_context_init(ec); |
176 | ||
b1edf445 LP |
177 | ec->keyring_mode = MANAGER_IS_SYSTEM(u->manager) ? |
178 | EXEC_KEYRING_PRIVATE : EXEC_KEYRING_INHERIT; | |
179 | } | |
180 | ||
598459ce LP |
181 | kc = unit_get_kill_context(u); |
182 | if (kc) | |
183 | kill_context_init(kc); | |
184 | ||
185 | if (UNIT_VTABLE(u)->init) | |
186 | UNIT_VTABLE(u)->init(u); | |
187 | } | |
188 | ||
87f0e418 | 189 | int unit_add_name(Unit *u, const char *text) { |
598459ce | 190 | _cleanup_free_ char *s = NULL, *i = NULL; |
87f0e418 | 191 | UnitType t; |
87f0e418 LP |
192 | int r; |
193 | ||
194 | assert(u); | |
195 | assert(text); | |
196 | ||
7410616c | 197 | if (unit_name_is_valid(text, UNIT_NAME_TEMPLATE)) { |
598459ce | 198 | |
ac155bb8 | 199 | if (!u->instance) |
9e2f7c11 | 200 | return -EINVAL; |
87f0e418 | 201 | |
7410616c LP |
202 | r = unit_name_replace_instance(text, u->instance, &s); |
203 | if (r < 0) | |
204 | return r; | |
205 | } else { | |
9e2f7c11 | 206 | s = strdup(text); |
7410616c LP |
207 | if (!s) |
208 | return -ENOMEM; | |
209 | } | |
87f0e418 | 210 | |
7410616c LP |
211 | if (set_contains(u->names, s)) |
212 | return 0; | |
213 | if (hashmap_contains(u->manager->units, s)) | |
214 | return -EEXIST; | |
215 | ||
216 | if (!unit_name_is_valid(s, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) | |
598459ce | 217 | return -EINVAL; |
e537352b | 218 | |
7410616c LP |
219 | t = unit_name_to_type(s); |
220 | if (t < 0) | |
221 | return -EINVAL; | |
87f0e418 | 222 | |
598459ce LP |
223 | if (u->type != _UNIT_TYPE_INVALID && t != u->type) |
224 | return -EINVAL; | |
87f0e418 | 225 | |
e48614c4 ZJS |
226 | r = unit_name_to_instance(s, &i); |
227 | if (r < 0) | |
598459ce | 228 | return r; |
87f0e418 | 229 | |
ce99c68a | 230 | if (i && !unit_type_may_template(t)) |
598459ce | 231 | return -EINVAL; |
9e2f7c11 | 232 | |
276c3e78 | 233 | /* Ensure that this unit is either instanced or not instanced, |
7410616c LP |
234 | * but not both. Note that we do allow names with different |
235 | * instance names however! */ | |
598459ce LP |
236 | if (u->type != _UNIT_TYPE_INVALID && !u->instance != !i) |
237 | return -EINVAL; | |
9e2f7c11 | 238 | |
8a993b61 | 239 | if (!unit_type_may_alias(t) && !set_isempty(u->names)) |
598459ce | 240 | return -EEXIST; |
9e2f7c11 | 241 | |
598459ce LP |
242 | if (hashmap_size(u->manager->units) >= MANAGER_MAX_NAMES) |
243 | return -E2BIG; | |
4f0f902f | 244 | |
e48614c4 | 245 | r = set_put(u->names, s); |
7410616c | 246 | if (r < 0) |
598459ce | 247 | return r; |
7410616c | 248 | assert(r > 0); |
87f0e418 | 249 | |
e48614c4 ZJS |
250 | r = hashmap_put(u->manager->units, s, u); |
251 | if (r < 0) { | |
7410616c | 252 | (void) set_remove(u->names, s); |
598459ce | 253 | return r; |
87f0e418 LP |
254 | } |
255 | ||
ac155bb8 | 256 | if (u->type == _UNIT_TYPE_INVALID) { |
ac155bb8 MS |
257 | u->type = t; |
258 | u->id = s; | |
259 | u->instance = i; | |
9e2f7c11 | 260 | |
71fda00f | 261 | LIST_PREPEND(units_by_type, u->manager->units_by_type[t], u); |
e537352b | 262 | |
598459ce | 263 | unit_init(u); |
87f0e418 | 264 | |
598459ce LP |
265 | i = NULL; |
266 | } | |
9e2f7c11 | 267 | |
598459ce | 268 | s = NULL; |
9e2f7c11 | 269 | |
598459ce LP |
270 | unit_add_to_dbus_queue(u); |
271 | return 0; | |
87f0e418 LP |
272 | } |
273 | ||
0ae97ec1 | 274 | int unit_choose_id(Unit *u, const char *name) { |
68eda4bd | 275 | _cleanup_free_ char *t = NULL; |
598459ce | 276 | char *s, *i; |
276c3e78 | 277 | int r; |
0ae97ec1 LP |
278 | |
279 | assert(u); | |
280 | assert(name); | |
281 | ||
7410616c | 282 | if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) { |
9e2f7c11 | 283 | |
ac155bb8 | 284 | if (!u->instance) |
9e2f7c11 LP |
285 | return -EINVAL; |
286 | ||
7410616c LP |
287 | r = unit_name_replace_instance(name, u->instance, &t); |
288 | if (r < 0) | |
289 | return r; | |
9e2f7c11 LP |
290 | |
291 | name = t; | |
292 | } | |
293 | ||
0ae97ec1 | 294 | /* Selects one of the names of this unit as the id */ |
ac155bb8 | 295 | s = set_get(u->names, (char*) name); |
9e2f7c11 | 296 | if (!s) |
0ae97ec1 LP |
297 | return -ENOENT; |
298 | ||
7410616c | 299 | /* Determine the new instance from the new id */ |
e48614c4 ZJS |
300 | r = unit_name_to_instance(s, &i); |
301 | if (r < 0) | |
276c3e78 LP |
302 | return r; |
303 | ||
ac155bb8 | 304 | u->id = s; |
276c3e78 | 305 | |
ac155bb8 MS |
306 | free(u->instance); |
307 | u->instance = i; | |
276c3e78 | 308 | |
c1e1601e | 309 | unit_add_to_dbus_queue(u); |
9e2f7c11 | 310 | |
0ae97ec1 LP |
311 | return 0; |
312 | } | |
313 | ||
f50e0a01 LP |
314 | int unit_set_description(Unit *u, const char *description) { |
315 | char *s; | |
316 | ||
317 | assert(u); | |
318 | ||
8aec412f LP |
319 | if (isempty(description)) |
320 | s = NULL; | |
321 | else { | |
322 | s = strdup(description); | |
323 | if (!s) | |
324 | return -ENOMEM; | |
325 | } | |
f50e0a01 | 326 | |
ac155bb8 MS |
327 | free(u->description); |
328 | u->description = s; | |
c1e1601e LP |
329 | |
330 | unit_add_to_dbus_queue(u); | |
f50e0a01 LP |
331 | return 0; |
332 | } | |
333 | ||
701cc384 | 334 | bool unit_check_gc(Unit *u) { |
a354329f | 335 | UnitActiveState state; |
f0bfbfac | 336 | bool inactive; |
701cc384 LP |
337 | assert(u); |
338 | ||
a354329f | 339 | if (u->job) |
701cc384 LP |
340 | return true; |
341 | ||
a354329f | 342 | if (u->nop_job) |
6c073082 LP |
343 | return true; |
344 | ||
a354329f | 345 | state = unit_active_state(u); |
f0bfbfac | 346 | inactive = state == UNIT_INACTIVE; |
a354329f LP |
347 | |
348 | /* If the unit is inactive and failed and no job is queued for | |
349 | * it, then release its runtime resources */ | |
350 | if (UNIT_IS_INACTIVE_OR_FAILED(state) && | |
351 | UNIT_VTABLE(u)->release_resources) | |
f0bfbfac | 352 | UNIT_VTABLE(u)->release_resources(u, inactive); |
a354329f LP |
353 | |
354 | /* But we keep the unit object around for longer when it is | |
355 | * referenced or configured to not be gc'ed */ | |
f0bfbfac | 356 | if (!inactive) |
701cc384 LP |
357 | return true; |
358 | ||
f5869324 | 359 | if (u->perpetual) |
701cc384 LP |
360 | return true; |
361 | ||
9d576438 LP |
362 | if (u->refs) |
363 | return true; | |
364 | ||
05a98afd LP |
365 | if (sd_bus_track_count(u->bus_track) > 0) |
366 | return true; | |
367 | ||
701cc384 LP |
368 | if (UNIT_VTABLE(u)->check_gc) |
369 | if (UNIT_VTABLE(u)->check_gc(u)) | |
370 | return true; | |
371 | ||
372 | return false; | |
373 | } | |
374 | ||
87f0e418 LP |
375 | void unit_add_to_load_queue(Unit *u) { |
376 | assert(u); | |
ac155bb8 | 377 | assert(u->type != _UNIT_TYPE_INVALID); |
87f0e418 | 378 | |
ac155bb8 | 379 | if (u->load_state != UNIT_STUB || u->in_load_queue) |
87f0e418 LP |
380 | return; |
381 | ||
71fda00f | 382 | LIST_PREPEND(load_queue, u->manager->load_queue, u); |
ac155bb8 | 383 | u->in_load_queue = true; |
87f0e418 LP |
384 | } |
385 | ||
23a177ef LP |
386 | void unit_add_to_cleanup_queue(Unit *u) { |
387 | assert(u); | |
388 | ||
ac155bb8 | 389 | if (u->in_cleanup_queue) |
23a177ef LP |
390 | return; |
391 | ||
71fda00f | 392 | LIST_PREPEND(cleanup_queue, u->manager->cleanup_queue, u); |
ac155bb8 | 393 | u->in_cleanup_queue = true; |
23a177ef LP |
394 | } |
395 | ||
701cc384 LP |
396 | void unit_add_to_gc_queue(Unit *u) { |
397 | assert(u); | |
398 | ||
ac155bb8 | 399 | if (u->in_gc_queue || u->in_cleanup_queue) |
701cc384 LP |
400 | return; |
401 | ||
402 | if (unit_check_gc(u)) | |
403 | return; | |
404 | ||
c5a97ed1 | 405 | LIST_PREPEND(gc_queue, u->manager->gc_unit_queue, u); |
ac155bb8 | 406 | u->in_gc_queue = true; |
701cc384 LP |
407 | } |
408 | ||
c1e1601e LP |
409 | void unit_add_to_dbus_queue(Unit *u) { |
410 | assert(u); | |
ac155bb8 | 411 | assert(u->type != _UNIT_TYPE_INVALID); |
c1e1601e | 412 | |
ac155bb8 | 413 | if (u->load_state == UNIT_STUB || u->in_dbus_queue) |
c1e1601e LP |
414 | return; |
415 | ||
a567261a | 416 | /* Shortcut things if nobody cares */ |
8f8f05a9 | 417 | if (sd_bus_track_count(u->manager->subscribed) <= 0 && |
ae572acd | 418 | sd_bus_track_count(u->bus_track) <= 0 && |
8f8f05a9 | 419 | set_isempty(u->manager->private_buses)) { |
ac155bb8 | 420 | u->sent_dbus_new_signal = true; |
94b6dfa2 LP |
421 | return; |
422 | } | |
423 | ||
71fda00f | 424 | LIST_PREPEND(dbus_queue, u->manager->dbus_unit_queue, u); |
ac155bb8 | 425 | u->in_dbus_queue = true; |
c1e1601e LP |
426 | } |
427 | ||
87f0e418 LP |
428 | static void bidi_set_free(Unit *u, Set *s) { |
429 | Iterator i; | |
430 | Unit *other; | |
431 | ||
432 | assert(u); | |
433 | ||
434 | /* Frees the set and makes sure we are dropped from the | |
435 | * inverse pointers */ | |
436 | ||
437 | SET_FOREACH(other, s, i) { | |
438 | UnitDependency d; | |
439 | ||
440 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) | |
ac155bb8 | 441 | set_remove(other->dependencies[d], u); |
701cc384 LP |
442 | |
443 | unit_add_to_gc_queue(other); | |
87f0e418 LP |
444 | } |
445 | ||
446 | set_free(s); | |
447 | } | |
448 | ||
c2756a68 LP |
449 | static void unit_remove_transient(Unit *u) { |
450 | char **i; | |
451 | ||
452 | assert(u); | |
453 | ||
454 | if (!u->transient) | |
455 | return; | |
456 | ||
457 | if (u->fragment_path) | |
3f5e8115 | 458 | (void) unlink(u->fragment_path); |
c2756a68 LP |
459 | |
460 | STRV_FOREACH(i, u->dropin_paths) { | |
39591351 | 461 | _cleanup_free_ char *p = NULL, *pp = NULL; |
c2756a68 | 462 | |
39591351 LP |
463 | p = dirname_malloc(*i); /* Get the drop-in directory from the drop-in file */ |
464 | if (!p) | |
465 | continue; | |
466 | ||
467 | pp = dirname_malloc(p); /* Get the config directory from the drop-in directory */ | |
468 | if (!pp) | |
469 | continue; | |
470 | ||
471 | /* Only drop transient drop-ins */ | |
472 | if (!path_equal(u->manager->lookup_paths.transient, pp)) | |
473 | continue; | |
c2756a68 | 474 | |
39591351 LP |
475 | (void) unlink(*i); |
476 | (void) rmdir(p); | |
c2756a68 LP |
477 | } |
478 | } | |
479 | ||
a57f7e2c LP |
480 | static void unit_free_requires_mounts_for(Unit *u) { |
481 | char **j; | |
482 | ||
483 | STRV_FOREACH(j, u->requires_mounts_for) { | |
484 | char s[strlen(*j) + 1]; | |
485 | ||
486 | PATH_FOREACH_PREFIX_MORE(s, *j) { | |
487 | char *y; | |
488 | Set *x; | |
489 | ||
490 | x = hashmap_get2(u->manager->units_requiring_mounts_for, s, (void**) &y); | |
491 | if (!x) | |
492 | continue; | |
493 | ||
494 | set_remove(x, u); | |
495 | ||
496 | if (set_isempty(x)) { | |
497 | hashmap_remove(u->manager->units_requiring_mounts_for, y); | |
498 | free(y); | |
499 | set_free(x); | |
500 | } | |
501 | } | |
502 | } | |
503 | ||
6796073e | 504 | u->requires_mounts_for = strv_free(u->requires_mounts_for); |
a57f7e2c LP |
505 | } |
506 | ||
598459ce LP |
507 | static void unit_done(Unit *u) { |
508 | ExecContext *ec; | |
509 | CGroupContext *cc; | |
510 | ||
511 | assert(u); | |
512 | ||
513 | if (u->type < 0) | |
514 | return; | |
515 | ||
516 | if (UNIT_VTABLE(u)->done) | |
517 | UNIT_VTABLE(u)->done(u); | |
518 | ||
519 | ec = unit_get_exec_context(u); | |
520 | if (ec) | |
521 | exec_context_done(ec); | |
522 | ||
523 | cc = unit_get_cgroup_context(u); | |
524 | if (cc) | |
525 | cgroup_context_done(cc); | |
526 | } | |
527 | ||
87f0e418 LP |
528 | void unit_free(Unit *u) { |
529 | UnitDependency d; | |
530 | Iterator i; | |
531 | char *t; | |
532 | ||
c9d5c9c0 LP |
533 | if (!u) |
534 | return; | |
87f0e418 | 535 | |
4f4afc88 LP |
536 | if (u->transient_file) |
537 | fclose(u->transient_file); | |
538 | ||
2c289ea8 | 539 | if (!MANAGER_IS_RELOADING(u->manager)) |
c2756a68 LP |
540 | unit_remove_transient(u); |
541 | ||
c1e1601e LP |
542 | bus_unit_send_removed_signal(u); |
543 | ||
598459ce | 544 | unit_done(u); |
a013b84b | 545 | |
cf9fd508 DM |
546 | sd_bus_slot_unref(u->match_bus_slot); |
547 | ||
05a98afd LP |
548 | sd_bus_track_unref(u->bus_track); |
549 | u->deserialized_refs = strv_free(u->deserialized_refs); | |
550 | ||
a57f7e2c LP |
551 | unit_free_requires_mounts_for(u); |
552 | ||
ac155bb8 MS |
553 | SET_FOREACH(t, u->names, i) |
554 | hashmap_remove_value(u->manager->units, t, u); | |
87f0e418 | 555 | |
4b58153d LP |
556 | if (!sd_id128_is_null(u->invocation_id)) |
557 | hashmap_remove_value(u->manager->units_by_invocation_id, &u->invocation_id, u); | |
558 | ||
97e7d748 MS |
559 | if (u->job) { |
560 | Job *j = u->job; | |
561 | job_uninstall(j); | |
562 | job_free(j); | |
563 | } | |
964e0949 | 564 | |
e0209d83 MS |
565 | if (u->nop_job) { |
566 | Job *j = u->nop_job; | |
567 | job_uninstall(j); | |
568 | job_free(j); | |
569 | } | |
570 | ||
964e0949 | 571 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) |
ac155bb8 | 572 | bidi_set_free(u, u->dependencies[d]); |
964e0949 | 573 | |
ac155bb8 | 574 | if (u->type != _UNIT_TYPE_INVALID) |
71fda00f | 575 | LIST_REMOVE(units_by_type, u->manager->units_by_type[u->type], u); |
ef734fd6 | 576 | |
ac155bb8 | 577 | if (u->in_load_queue) |
71fda00f | 578 | LIST_REMOVE(load_queue, u->manager->load_queue, u); |
87f0e418 | 579 | |
ac155bb8 | 580 | if (u->in_dbus_queue) |
71fda00f | 581 | LIST_REMOVE(dbus_queue, u->manager->dbus_unit_queue, u); |
c1e1601e | 582 | |
ac155bb8 | 583 | if (u->in_cleanup_queue) |
71fda00f | 584 | LIST_REMOVE(cleanup_queue, u->manager->cleanup_queue, u); |
23a177ef | 585 | |
a2d72e26 | 586 | if (u->in_gc_queue) |
c5a97ed1 | 587 | LIST_REMOVE(gc_queue, u->manager->gc_unit_queue, u); |
701cc384 | 588 | |
4ad49000 | 589 | if (u->in_cgroup_queue) |
71fda00f | 590 | LIST_REMOVE(cgroup_queue, u->manager->cgroup_queue, u); |
87f0e418 | 591 | |
efdb0237 | 592 | unit_release_cgroup(u); |
72673e86 | 593 | |
00d9ef85 LP |
594 | unit_unref_uid_gid(u, false); |
595 | ||
5269eb6b | 596 | (void) manager_update_failed_units(u->manager, u, false); |
db785129 | 597 | set_remove(u->manager->startup_units, u); |
f755e3b7 | 598 | |
ac155bb8 | 599 | free(u->description); |
49dbfa7b | 600 | strv_free(u->documentation); |
ac155bb8 | 601 | free(u->fragment_path); |
1b64d026 | 602 | free(u->source_path); |
ae7a7182 | 603 | strv_free(u->dropin_paths); |
ac155bb8 | 604 | free(u->instance); |
87f0e418 | 605 | |
f189ab18 LP |
606 | free(u->job_timeout_reboot_arg); |
607 | ||
ac155bb8 | 608 | set_free_free(u->names); |
87f0e418 | 609 | |
a911bb9a LP |
610 | unit_unwatch_all_pids(u); |
611 | ||
ac155bb8 | 612 | condition_free_list(u->conditions); |
59fccdc5 | 613 | condition_free_list(u->asserts); |
52661efd | 614 | |
6bf0f408 LP |
615 | free(u->reboot_arg); |
616 | ||
702a2d8f LP |
617 | unit_ref_unset(&u->slice); |
618 | ||
ac155bb8 MS |
619 | while (u->refs) |
620 | unit_ref_unset(u->refs); | |
57020a3a | 621 | |
6a48d82f DM |
622 | safe_close(u->ip_accounting_ingress_map_fd); |
623 | safe_close(u->ip_accounting_egress_map_fd); | |
624 | ||
625 | safe_close(u->ipv4_allow_map_fd); | |
626 | safe_close(u->ipv6_allow_map_fd); | |
627 | safe_close(u->ipv4_deny_map_fd); | |
628 | safe_close(u->ipv6_deny_map_fd); | |
629 | ||
630 | bpf_program_unref(u->ip_bpf_ingress); | |
631 | bpf_program_unref(u->ip_bpf_egress); | |
632 | ||
87f0e418 LP |
633 | free(u); |
634 | } | |
635 | ||
636 | UnitActiveState unit_active_state(Unit *u) { | |
637 | assert(u); | |
638 | ||
ac155bb8 | 639 | if (u->load_state == UNIT_MERGED) |
6124958c LP |
640 | return unit_active_state(unit_follow_merge(u)); |
641 | ||
642 | /* After a reload it might happen that a unit is not correctly | |
643 | * loaded but still has a process around. That's why we won't | |
fdf20a31 | 644 | * shortcut failed loading to UNIT_INACTIVE_FAILED. */ |
87f0e418 LP |
645 | |
646 | return UNIT_VTABLE(u)->active_state(u); | |
647 | } | |
648 | ||
10a94420 LP |
649 | const char* unit_sub_state_to_string(Unit *u) { |
650 | assert(u); | |
651 | ||
652 | return UNIT_VTABLE(u)->sub_state_to_string(u); | |
653 | } | |
654 | ||
7c0b05e5 MS |
655 | static int complete_move(Set **s, Set **other) { |
656 | int r; | |
657 | ||
23a177ef LP |
658 | assert(s); |
659 | assert(other); | |
87f0e418 | 660 | |
23a177ef | 661 | if (!*other) |
7c0b05e5 | 662 | return 0; |
87f0e418 | 663 | |
7c0b05e5 MS |
664 | if (*s) { |
665 | r = set_move(*s, *other); | |
666 | if (r < 0) | |
667 | return r; | |
668 | } else { | |
23a177ef LP |
669 | *s = *other; |
670 | *other = NULL; | |
671 | } | |
7c0b05e5 MS |
672 | |
673 | return 0; | |
23a177ef | 674 | } |
87f0e418 | 675 | |
7c0b05e5 | 676 | static int merge_names(Unit *u, Unit *other) { |
23a177ef LP |
677 | char *t; |
678 | Iterator i; | |
7c0b05e5 | 679 | int r; |
87f0e418 | 680 | |
23a177ef LP |
681 | assert(u); |
682 | assert(other); | |
683 | ||
7c0b05e5 MS |
684 | r = complete_move(&u->names, &other->names); |
685 | if (r < 0) | |
686 | return r; | |
23a177ef | 687 | |
ac155bb8 MS |
688 | set_free_free(other->names); |
689 | other->names = NULL; | |
690 | other->id = NULL; | |
23a177ef | 691 | |
ac155bb8 MS |
692 | SET_FOREACH(t, u->names, i) |
693 | assert_se(hashmap_replace(u->manager->units, t, u) == 0); | |
7c0b05e5 MS |
694 | |
695 | return 0; | |
87f0e418 LP |
696 | } |
697 | ||
09a65f92 MS |
698 | static int reserve_dependencies(Unit *u, Unit *other, UnitDependency d) { |
699 | unsigned n_reserve; | |
700 | ||
701 | assert(u); | |
702 | assert(other); | |
703 | assert(d < _UNIT_DEPENDENCY_MAX); | |
704 | ||
705 | /* | |
706 | * If u does not have this dependency set allocated, there is no need | |
f131770b | 707 | * to reserve anything. In that case other's set will be transferred |
09a65f92 MS |
708 | * as a whole to u by complete_move(). |
709 | */ | |
710 | if (!u->dependencies[d]) | |
711 | return 0; | |
712 | ||
713 | /* merge_dependencies() will skip a u-on-u dependency */ | |
714 | n_reserve = set_size(other->dependencies[d]) - !!set_get(other->dependencies[d], u); | |
715 | ||
716 | return set_reserve(u->dependencies[d], n_reserve); | |
717 | } | |
718 | ||
d1fab3fe | 719 | static void merge_dependencies(Unit *u, Unit *other, const char *other_id, UnitDependency d) { |
23a177ef LP |
720 | Iterator i; |
721 | Unit *back; | |
87f0e418 | 722 | int r; |
23a177ef LP |
723 | |
724 | assert(u); | |
725 | assert(other); | |
726 | assert(d < _UNIT_DEPENDENCY_MAX); | |
727 | ||
83a95334 | 728 | /* Fix backwards pointers */ |
ac155bb8 | 729 | SET_FOREACH(back, other->dependencies[d], i) { |
23a177ef LP |
730 | UnitDependency k; |
731 | ||
e48614c4 | 732 | for (k = 0; k < _UNIT_DEPENDENCY_MAX; k++) { |
e66047ff ZJS |
733 | /* Do not add dependencies between u and itself */ |
734 | if (back == u) { | |
d1fab3fe | 735 | if (set_remove(back->dependencies[k], other)) |
f2341e0a | 736 | maybe_warn_about_dependency(u, other_id, k); |
e66047ff ZJS |
737 | } else { |
738 | r = set_remove_and_put(back->dependencies[k], other, u); | |
739 | if (r == -EEXIST) | |
740 | set_remove(back->dependencies[k], other); | |
741 | else | |
742 | assert(r >= 0 || r == -ENOENT); | |
743 | } | |
e48614c4 | 744 | } |
23a177ef LP |
745 | } |
746 | ||
e66047ff | 747 | /* Also do not move dependencies on u to itself */ |
d1fab3fe ZJS |
748 | back = set_remove(other->dependencies[d], u); |
749 | if (back) | |
f2341e0a | 750 | maybe_warn_about_dependency(u, other_id, d); |
e66047ff | 751 | |
7c0b05e5 MS |
752 | /* The move cannot fail. The caller must have performed a reservation. */ |
753 | assert_se(complete_move(&u->dependencies[d], &other->dependencies[d]) == 0); | |
23a177ef | 754 | |
525d3cc7 | 755 | other->dependencies[d] = set_free(other->dependencies[d]); |
23a177ef LP |
756 | } |
757 | ||
758 | int unit_merge(Unit *u, Unit *other) { | |
87f0e418 | 759 | UnitDependency d; |
d1fab3fe | 760 | const char *other_id = NULL; |
09a65f92 | 761 | int r; |
87f0e418 LP |
762 | |
763 | assert(u); | |
764 | assert(other); | |
ac155bb8 MS |
765 | assert(u->manager == other->manager); |
766 | assert(u->type != _UNIT_TYPE_INVALID); | |
87f0e418 | 767 | |
cc916967 LP |
768 | other = unit_follow_merge(other); |
769 | ||
23a177ef LP |
770 | if (other == u) |
771 | return 0; | |
772 | ||
ac155bb8 | 773 | if (u->type != other->type) |
9e2f7c11 LP |
774 | return -EINVAL; |
775 | ||
ac155bb8 | 776 | if (!u->instance != !other->instance) |
87f0e418 LP |
777 | return -EINVAL; |
778 | ||
8a993b61 | 779 | if (!unit_type_may_alias(u->type)) /* Merging only applies to unit names that support aliases */ |
934e749e LP |
780 | return -EEXIST; |
781 | ||
ac155bb8 | 782 | if (other->load_state != UNIT_STUB && |
c2756a68 | 783 | other->load_state != UNIT_NOT_FOUND) |
23a177ef | 784 | return -EEXIST; |
87f0e418 | 785 | |
ac155bb8 | 786 | if (other->job) |
819e213f LP |
787 | return -EEXIST; |
788 | ||
e0209d83 MS |
789 | if (other->nop_job) |
790 | return -EEXIST; | |
791 | ||
fdf20a31 | 792 | if (!UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other))) |
819e213f LP |
793 | return -EEXIST; |
794 | ||
d1fab3fe ZJS |
795 | if (other->id) |
796 | other_id = strdupa(other->id); | |
797 | ||
09a65f92 MS |
798 | /* Make reservations to ensure merge_dependencies() won't fail */ |
799 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) { | |
800 | r = reserve_dependencies(u, other, d); | |
801 | /* | |
802 | * We don't rollback reservations if we fail. We don't have | |
803 | * a way to undo reservations. A reservation is not a leak. | |
804 | */ | |
805 | if (r < 0) | |
806 | return r; | |
807 | } | |
808 | ||
87f0e418 | 809 | /* Merge names */ |
7c0b05e5 MS |
810 | r = merge_names(u, other); |
811 | if (r < 0) | |
812 | return r; | |
87f0e418 | 813 | |
57020a3a | 814 | /* Redirect all references */ |
ac155bb8 MS |
815 | while (other->refs) |
816 | unit_ref_set(other->refs, u); | |
57020a3a | 817 | |
87f0e418 LP |
818 | /* Merge dependencies */ |
819 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) | |
d1fab3fe | 820 | merge_dependencies(u, other, other_id, d); |
87f0e418 | 821 | |
ac155bb8 MS |
822 | other->load_state = UNIT_MERGED; |
823 | other->merged_into = u; | |
23a177ef | 824 | |
3616a49c LP |
825 | /* If there is still some data attached to the other node, we |
826 | * don't need it anymore, and can free it. */ | |
ac155bb8 | 827 | if (other->load_state != UNIT_STUB) |
3616a49c LP |
828 | if (UNIT_VTABLE(other)->done) |
829 | UNIT_VTABLE(other)->done(other); | |
830 | ||
831 | unit_add_to_dbus_queue(u); | |
23a177ef LP |
832 | unit_add_to_cleanup_queue(other); |
833 | ||
834 | return 0; | |
835 | } | |
836 | ||
837 | int unit_merge_by_name(Unit *u, const char *name) { | |
934e749e | 838 | _cleanup_free_ char *s = NULL; |
23a177ef | 839 | Unit *other; |
9e2f7c11 | 840 | int r; |
23a177ef LP |
841 | |
842 | assert(u); | |
843 | assert(name); | |
844 | ||
7410616c | 845 | if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) { |
ac155bb8 | 846 | if (!u->instance) |
9e2f7c11 LP |
847 | return -EINVAL; |
848 | ||
7410616c LP |
849 | r = unit_name_replace_instance(name, u->instance, &s); |
850 | if (r < 0) | |
851 | return r; | |
9e2f7c11 LP |
852 | |
853 | name = s; | |
854 | } | |
855 | ||
c2756a68 | 856 | other = manager_get_unit(u->manager, name); |
7410616c LP |
857 | if (other) |
858 | return unit_merge(u, other); | |
23a177ef | 859 | |
7410616c | 860 | return unit_add_name(u, name); |
23a177ef LP |
861 | } |
862 | ||
863 | Unit* unit_follow_merge(Unit *u) { | |
864 | assert(u); | |
865 | ||
ac155bb8 MS |
866 | while (u->load_state == UNIT_MERGED) |
867 | assert_se(u = u->merged_into); | |
23a177ef LP |
868 | |
869 | return u; | |
870 | } | |
871 | ||
872 | int unit_add_exec_dependencies(Unit *u, ExecContext *c) { | |
ada5e276 YW |
873 | ExecDirectoryType dt; |
874 | char **dp; | |
23a177ef LP |
875 | int r; |
876 | ||
877 | assert(u); | |
878 | assert(c); | |
879 | ||
36be24c8 ZJS |
880 | if (c->working_directory) { |
881 | r = unit_require_mounts_for(u, c->working_directory); | |
882 | if (r < 0) | |
883 | return r; | |
884 | } | |
885 | ||
886 | if (c->root_directory) { | |
887 | r = unit_require_mounts_for(u, c->root_directory); | |
888 | if (r < 0) | |
889 | return r; | |
890 | } | |
891 | ||
915e6d16 LP |
892 | if (c->root_image) { |
893 | r = unit_require_mounts_for(u, c->root_image); | |
894 | if (r < 0) | |
895 | return r; | |
896 | } | |
897 | ||
ada5e276 YW |
898 | for (dt = 0; dt < _EXEC_DIRECTORY_MAX; dt++) { |
899 | if (!u->manager->prefix[dt]) | |
900 | continue; | |
901 | ||
902 | STRV_FOREACH(dp, c->directories[dt].paths) { | |
903 | _cleanup_free_ char *p; | |
904 | ||
905 | p = strjoin(u->manager->prefix[dt], "/", *dp); | |
906 | if (!p) | |
907 | return -ENOMEM; | |
908 | ||
909 | r = unit_require_mounts_for(u, p); | |
910 | if (r < 0) | |
911 | return r; | |
912 | } | |
913 | } | |
914 | ||
463d0d15 | 915 | if (!MANAGER_IS_SYSTEM(u->manager)) |
b46a529c LP |
916 | return 0; |
917 | ||
918 | if (c->private_tmp) { | |
d71f0505 LP |
919 | const char *p; |
920 | ||
921 | FOREACH_STRING(p, "/tmp", "/var/tmp") { | |
922 | r = unit_require_mounts_for(u, p); | |
923 | if (r < 0) | |
924 | return r; | |
925 | } | |
b46a529c | 926 | |
d71f0505 | 927 | r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_TMPFILES_SETUP_SERVICE, NULL, true); |
b46a529c LP |
928 | if (r < 0) |
929 | return r; | |
930 | } | |
931 | ||
52c239d7 LB |
932 | if (!IN_SET(c->std_output, |
933 | EXEC_OUTPUT_JOURNAL, EXEC_OUTPUT_JOURNAL_AND_CONSOLE, | |
934 | EXEC_OUTPUT_KMSG, EXEC_OUTPUT_KMSG_AND_CONSOLE, | |
935 | EXEC_OUTPUT_SYSLOG, EXEC_OUTPUT_SYSLOG_AND_CONSOLE) && | |
936 | !IN_SET(c->std_error, | |
937 | EXEC_OUTPUT_JOURNAL, EXEC_OUTPUT_JOURNAL_AND_CONSOLE, | |
938 | EXEC_OUTPUT_KMSG, EXEC_OUTPUT_KMSG_AND_CONSOLE, | |
939 | EXEC_OUTPUT_SYSLOG, EXEC_OUTPUT_SYSLOG_AND_CONSOLE)) | |
23a177ef LP |
940 | return 0; |
941 | ||
942 | /* If syslog or kernel logging is requested, make sure our own | |
943 | * logging daemon is run first. */ | |
944 | ||
b46a529c LP |
945 | r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_JOURNALD_SOCKET, NULL, true); |
946 | if (r < 0) | |
947 | return r; | |
23a177ef | 948 | |
87f0e418 LP |
949 | return 0; |
950 | } | |
951 | ||
87f0e418 LP |
952 | const char *unit_description(Unit *u) { |
953 | assert(u); | |
954 | ||
ac155bb8 MS |
955 | if (u->description) |
956 | return u->description; | |
87f0e418 | 957 | |
ac155bb8 | 958 | return strna(u->id); |
87f0e418 LP |
959 | } |
960 | ||
961 | void unit_dump(Unit *u, FILE *f, const char *prefix) { | |
49dbfa7b | 962 | char *t, **j; |
87f0e418 LP |
963 | UnitDependency d; |
964 | Iterator i; | |
47be870b | 965 | const char *prefix2; |
173e3821 | 966 | char |
a483fb59 | 967 | timestamp0[FORMAT_TIMESTAMP_MAX], |
173e3821 LP |
968 | timestamp1[FORMAT_TIMESTAMP_MAX], |
969 | timestamp2[FORMAT_TIMESTAMP_MAX], | |
970 | timestamp3[FORMAT_TIMESTAMP_MAX], | |
faf919f1 LP |
971 | timestamp4[FORMAT_TIMESTAMP_MAX], |
972 | timespan[FORMAT_TIMESPAN_MAX]; | |
a7f241db | 973 | Unit *following; |
eeaedb7c LP |
974 | _cleanup_set_free_ Set *following_set = NULL; |
975 | int r; | |
05a98afd | 976 | const char *n; |
87f0e418 LP |
977 | |
978 | assert(u); | |
ac155bb8 | 979 | assert(u->type >= 0); |
87f0e418 | 980 | |
4c940960 | 981 | prefix = strempty(prefix); |
63c372cb | 982 | prefix2 = strjoina(prefix, "\t"); |
87f0e418 LP |
983 | |
984 | fprintf(f, | |
40d50879 | 985 | "%s-> Unit %s:\n" |
87f0e418 | 986 | "%s\tDescription: %s\n" |
9e2f7c11 | 987 | "%s\tInstance: %s\n" |
87f0e418 | 988 | "%s\tUnit Load State: %s\n" |
2fad8195 | 989 | "%s\tUnit Active State: %s\n" |
b895d155 | 990 | "%s\tState Change Timestamp: %s\n" |
173e3821 | 991 | "%s\tInactive Exit Timestamp: %s\n" |
2fad8195 | 992 | "%s\tActive Enter Timestamp: %s\n" |
701cc384 | 993 | "%s\tActive Exit Timestamp: %s\n" |
173e3821 | 994 | "%s\tInactive Enter Timestamp: %s\n" |
45fb0699 | 995 | "%s\tGC Check Good: %s\n" |
9444b1f2 | 996 | "%s\tNeed Daemon Reload: %s\n" |
c2756a68 | 997 | "%s\tTransient: %s\n" |
f5869324 | 998 | "%s\tPerpetual: %s\n" |
4ad49000 LP |
999 | "%s\tSlice: %s\n" |
1000 | "%s\tCGroup: %s\n" | |
aae7e17f | 1001 | "%s\tCGroup realized: %s\n", |
ac155bb8 | 1002 | prefix, u->id, |
87f0e418 | 1003 | prefix, unit_description(u), |
ac155bb8 MS |
1004 | prefix, strna(u->instance), |
1005 | prefix, unit_load_state_to_string(u->load_state), | |
2fad8195 | 1006 | prefix, unit_active_state_to_string(unit_active_state(u)), |
a483fb59 | 1007 | prefix, strna(format_timestamp(timestamp0, sizeof(timestamp0), u->state_change_timestamp.realtime)), |
ac155bb8 MS |
1008 | prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->inactive_exit_timestamp.realtime)), |
1009 | prefix, strna(format_timestamp(timestamp2, sizeof(timestamp2), u->active_enter_timestamp.realtime)), | |
1010 | prefix, strna(format_timestamp(timestamp3, sizeof(timestamp3), u->active_exit_timestamp.realtime)), | |
1011 | prefix, strna(format_timestamp(timestamp4, sizeof(timestamp4), u->inactive_enter_timestamp.realtime)), | |
45fb0699 | 1012 | prefix, yes_no(unit_check_gc(u)), |
9444b1f2 | 1013 | prefix, yes_no(unit_need_daemon_reload(u)), |
c2756a68 | 1014 | prefix, yes_no(u->transient), |
f5869324 | 1015 | prefix, yes_no(u->perpetual), |
4ad49000 LP |
1016 | prefix, strna(unit_slice_name(u)), |
1017 | prefix, strna(u->cgroup_path), | |
aae7e17f FB |
1018 | prefix, yes_no(u->cgroup_realized)); |
1019 | ||
1020 | if (u->cgroup_realized_mask != 0) { | |
1021 | _cleanup_free_ char *s = NULL; | |
1022 | (void) cg_mask_to_string(u->cgroup_realized_mask, &s); | |
1023 | fprintf(f, "%s\tCGroup mask: %s\n", prefix, strnull(s)); | |
1024 | } | |
1025 | if (u->cgroup_members_mask != 0) { | |
1026 | _cleanup_free_ char *s = NULL; | |
1027 | (void) cg_mask_to_string(u->cgroup_members_mask, &s); | |
1028 | fprintf(f, "%s\tCGroup members mask: %s\n", prefix, strnull(s)); | |
1029 | } | |
0301abf4 | 1030 | |
ac155bb8 | 1031 | SET_FOREACH(t, u->names, i) |
87f0e418 LP |
1032 | fprintf(f, "%s\tName: %s\n", prefix, t); |
1033 | ||
4b58153d LP |
1034 | if (!sd_id128_is_null(u->invocation_id)) |
1035 | fprintf(f, "%s\tInvocation ID: " SD_ID128_FORMAT_STR "\n", | |
1036 | prefix, SD_ID128_FORMAT_VAL(u->invocation_id)); | |
1037 | ||
49dbfa7b LP |
1038 | STRV_FOREACH(j, u->documentation) |
1039 | fprintf(f, "%s\tDocumentation: %s\n", prefix, *j); | |
1040 | ||
eeaedb7c LP |
1041 | following = unit_following(u); |
1042 | if (following) | |
ac155bb8 | 1043 | fprintf(f, "%s\tFollowing: %s\n", prefix, following->id); |
8fe914ec | 1044 | |
eeaedb7c LP |
1045 | r = unit_following_set(u, &following_set); |
1046 | if (r >= 0) { | |
1047 | Unit *other; | |
1048 | ||
1049 | SET_FOREACH(other, following_set, i) | |
1050 | fprintf(f, "%s\tFollowing Set Member: %s\n", prefix, other->id); | |
1051 | } | |
1052 | ||
ac155bb8 MS |
1053 | if (u->fragment_path) |
1054 | fprintf(f, "%s\tFragment Path: %s\n", prefix, u->fragment_path); | |
23a177ef | 1055 | |
1b64d026 LP |
1056 | if (u->source_path) |
1057 | fprintf(f, "%s\tSource Path: %s\n", prefix, u->source_path); | |
1058 | ||
ae7a7182 | 1059 | STRV_FOREACH(j, u->dropin_paths) |
2875e22b | 1060 | fprintf(f, "%s\tDropIn Path: %s\n", prefix, *j); |
ae7a7182 | 1061 | |
36c16a7c | 1062 | if (u->job_timeout != USEC_INFINITY) |
2fa4092c | 1063 | fprintf(f, "%s\tJob Timeout: %s\n", prefix, format_timespan(timespan, sizeof(timespan), u->job_timeout, 0)); |
faf919f1 | 1064 | |
87a47f99 LN |
1065 | if (u->job_timeout_action != EMERGENCY_ACTION_NONE) |
1066 | fprintf(f, "%s\tJob Timeout Action: %s\n", prefix, emergency_action_to_string(u->job_timeout_action)); | |
f189ab18 LP |
1067 | |
1068 | if (u->job_timeout_reboot_arg) | |
1069 | fprintf(f, "%s\tJob Timeout Reboot Argument: %s\n", prefix, u->job_timeout_reboot_arg); | |
1070 | ||
59fccdc5 LP |
1071 | condition_dump_list(u->conditions, f, prefix, condition_type_to_string); |
1072 | condition_dump_list(u->asserts, f, prefix, assert_type_to_string); | |
52661efd | 1073 | |
ac155bb8 | 1074 | if (dual_timestamp_is_set(&u->condition_timestamp)) |
2791a8f8 LP |
1075 | fprintf(f, |
1076 | "%s\tCondition Timestamp: %s\n" | |
1077 | "%s\tCondition Result: %s\n", | |
ac155bb8 MS |
1078 | prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->condition_timestamp.realtime)), |
1079 | prefix, yes_no(u->condition_result)); | |
2791a8f8 | 1080 | |
59fccdc5 LP |
1081 | if (dual_timestamp_is_set(&u->assert_timestamp)) |
1082 | fprintf(f, | |
1083 | "%s\tAssert Timestamp: %s\n" | |
1084 | "%s\tAssert Result: %s\n", | |
1085 | prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->assert_timestamp.realtime)), | |
1086 | prefix, yes_no(u->assert_result)); | |
1087 | ||
87f0e418 LP |
1088 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) { |
1089 | Unit *other; | |
1090 | ||
ac155bb8 MS |
1091 | SET_FOREACH(other, u->dependencies[d], i) |
1092 | fprintf(f, "%s\t%s: %s\n", prefix, unit_dependency_to_string(d), other->id); | |
87f0e418 LP |
1093 | } |
1094 | ||
7c8fa05c | 1095 | if (!strv_isempty(u->requires_mounts_for)) { |
7c8fa05c LP |
1096 | fprintf(f, |
1097 | "%s\tRequiresMountsFor:", prefix); | |
1098 | ||
1099 | STRV_FOREACH(j, u->requires_mounts_for) | |
1100 | fprintf(f, " %s", *j); | |
1101 | ||
1102 | fputs("\n", f); | |
1103 | } | |
1104 | ||
ac155bb8 | 1105 | if (u->load_state == UNIT_LOADED) { |
ab1f0633 | 1106 | |
b0650475 | 1107 | fprintf(f, |
a40eb732 | 1108 | "%s\tStopWhenUnneeded: %s\n" |
b5e9dba8 LP |
1109 | "%s\tRefuseManualStart: %s\n" |
1110 | "%s\tRefuseManualStop: %s\n" | |
222ae6a8 | 1111 | "%s\tDefaultDependencies: %s\n" |
d420282b | 1112 | "%s\tOnFailureJobMode: %s\n" |
36b4a7ba | 1113 | "%s\tIgnoreOnIsolate: %s\n", |
ac155bb8 MS |
1114 | prefix, yes_no(u->stop_when_unneeded), |
1115 | prefix, yes_no(u->refuse_manual_start), | |
1116 | prefix, yes_no(u->refuse_manual_stop), | |
1117 | prefix, yes_no(u->default_dependencies), | |
d420282b | 1118 | prefix, job_mode_to_string(u->on_failure_job_mode), |
36b4a7ba | 1119 | prefix, yes_no(u->ignore_on_isolate)); |
ac155bb8 | 1120 | |
23a177ef LP |
1121 | if (UNIT_VTABLE(u)->dump) |
1122 | UNIT_VTABLE(u)->dump(u, f, prefix2); | |
b0650475 | 1123 | |
ac155bb8 | 1124 | } else if (u->load_state == UNIT_MERGED) |
b0650475 LP |
1125 | fprintf(f, |
1126 | "%s\tMerged into: %s\n", | |
ac155bb8 MS |
1127 | prefix, u->merged_into->id); |
1128 | else if (u->load_state == UNIT_ERROR) | |
1129 | fprintf(f, "%s\tLoad Error Code: %s\n", prefix, strerror(-u->load_error)); | |
8821a00f | 1130 | |
05a98afd LP |
1131 | for (n = sd_bus_track_first(u->bus_track); n; n = sd_bus_track_next(u->bus_track)) |
1132 | fprintf(f, "%s\tBus Ref: %s\n", prefix, n); | |
87f0e418 | 1133 | |
ac155bb8 MS |
1134 | if (u->job) |
1135 | job_dump(u->job, f, prefix2); | |
87f0e418 | 1136 | |
e0209d83 MS |
1137 | if (u->nop_job) |
1138 | job_dump(u->nop_job, f, prefix2); | |
87f0e418 LP |
1139 | } |
1140 | ||
1141 | /* Common implementation for multiple backends */ | |
e537352b | 1142 | int unit_load_fragment_and_dropin(Unit *u) { |
23a177ef LP |
1143 | int r; |
1144 | ||
1145 | assert(u); | |
23a177ef | 1146 | |
e48614c4 | 1147 | /* Load a .{service,socket,...} file */ |
4ad49000 LP |
1148 | r = unit_load_fragment(u); |
1149 | if (r < 0) | |
23a177ef LP |
1150 | return r; |
1151 | ||
ac155bb8 | 1152 | if (u->load_state == UNIT_STUB) |
23a177ef LP |
1153 | return -ENOENT; |
1154 | ||
9e4ea9cc ZJS |
1155 | /* Load drop-in directory data. If u is an alias, we might be reloading the |
1156 | * target unit needlessly. But we cannot be sure which drops-ins have already | |
1157 | * been loaded and which not, at least without doing complicated book-keeping, | |
1158 | * so let's always reread all drop-ins. */ | |
1159 | return unit_load_dropin(unit_follow_merge(u)); | |
23a177ef LP |
1160 | } |
1161 | ||
1162 | /* Common implementation for multiple backends */ | |
e537352b | 1163 | int unit_load_fragment_and_dropin_optional(Unit *u) { |
23a177ef | 1164 | int r; |
87f0e418 LP |
1165 | |
1166 | assert(u); | |
1167 | ||
23a177ef LP |
1168 | /* Same as unit_load_fragment_and_dropin(), but whether |
1169 | * something can be loaded or not doesn't matter. */ | |
1170 | ||
1171 | /* Load a .service file */ | |
4ad49000 LP |
1172 | r = unit_load_fragment(u); |
1173 | if (r < 0) | |
87f0e418 LP |
1174 | return r; |
1175 | ||
ac155bb8 MS |
1176 | if (u->load_state == UNIT_STUB) |
1177 | u->load_state = UNIT_LOADED; | |
d46de8a1 | 1178 | |
9e4ea9cc ZJS |
1179 | /* Load drop-in directory data */ |
1180 | return unit_load_dropin(unit_follow_merge(u)); | |
87f0e418 LP |
1181 | } |
1182 | ||
bba34eed | 1183 | int unit_add_default_target_dependency(Unit *u, Unit *target) { |
98bc2000 LP |
1184 | assert(u); |
1185 | assert(target); | |
1186 | ||
ac155bb8 | 1187 | if (target->type != UNIT_TARGET) |
98bc2000 LP |
1188 | return 0; |
1189 | ||
35b8ca3a | 1190 | /* Only add the dependency if both units are loaded, so that |
bba34eed | 1191 | * that loop check below is reliable */ |
ac155bb8 MS |
1192 | if (u->load_state != UNIT_LOADED || |
1193 | target->load_state != UNIT_LOADED) | |
bba34eed LP |
1194 | return 0; |
1195 | ||
21256a2b LP |
1196 | /* If either side wants no automatic dependencies, then let's |
1197 | * skip this */ | |
ac155bb8 MS |
1198 | if (!u->default_dependencies || |
1199 | !target->default_dependencies) | |
21256a2b LP |
1200 | return 0; |
1201 | ||
98bc2000 | 1202 | /* Don't create loops */ |
ac155bb8 | 1203 | if (set_get(target->dependencies[UNIT_BEFORE], u)) |
98bc2000 LP |
1204 | return 0; |
1205 | ||
1206 | return unit_add_dependency(target, UNIT_AFTER, u, true); | |
1207 | } | |
1208 | ||
e954c9cf | 1209 | static int unit_add_target_dependencies(Unit *u) { |
a016b922 | 1210 | |
21256a2b LP |
1211 | static const UnitDependency deps[] = { |
1212 | UNIT_REQUIRED_BY, | |
be7d9ff7 | 1213 | UNIT_REQUISITE_OF, |
21256a2b LP |
1214 | UNIT_WANTED_BY, |
1215 | UNIT_BOUND_BY | |
1216 | }; | |
1217 | ||
bba34eed | 1218 | Unit *target; |
98bc2000 | 1219 | Iterator i; |
21256a2b | 1220 | unsigned k; |
db57f3c6 | 1221 | int r = 0; |
98bc2000 LP |
1222 | |
1223 | assert(u); | |
1224 | ||
21256a2b | 1225 | for (k = 0; k < ELEMENTSOF(deps); k++) |
a016b922 LP |
1226 | SET_FOREACH(target, u->dependencies[deps[k]], i) { |
1227 | r = unit_add_default_target_dependency(u, target); | |
1228 | if (r < 0) | |
21256a2b | 1229 | return r; |
a016b922 LP |
1230 | } |
1231 | ||
e954c9cf LP |
1232 | return r; |
1233 | } | |
4ad49000 | 1234 | |
e954c9cf LP |
1235 | static int unit_add_slice_dependencies(Unit *u) { |
1236 | assert(u); | |
b81884e7 | 1237 | |
35b7ff80 | 1238 | if (!UNIT_HAS_CGROUP_CONTEXT(u)) |
e954c9cf LP |
1239 | return 0; |
1240 | ||
1241 | if (UNIT_ISSET(u->slice)) | |
8c8da0e0 | 1242 | return unit_add_two_dependencies(u, UNIT_AFTER, UNIT_REQUIRES, UNIT_DEREF(u->slice), true); |
e954c9cf | 1243 | |
8c8da0e0 | 1244 | if (unit_has_name(u, SPECIAL_ROOT_SLICE)) |
d1fab3fe ZJS |
1245 | return 0; |
1246 | ||
8c8da0e0 | 1247 | return unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_ROOT_SLICE, NULL, true); |
98bc2000 LP |
1248 | } |
1249 | ||
e954c9cf | 1250 | static int unit_add_mount_dependencies(Unit *u) { |
9588bc32 LP |
1251 | char **i; |
1252 | int r; | |
1253 | ||
1254 | assert(u); | |
1255 | ||
1256 | STRV_FOREACH(i, u->requires_mounts_for) { | |
1257 | char prefix[strlen(*i) + 1]; | |
1258 | ||
1259 | PATH_FOREACH_PREFIX_MORE(prefix, *i) { | |
c7c89abb | 1260 | _cleanup_free_ char *p = NULL; |
9588bc32 LP |
1261 | Unit *m; |
1262 | ||
c7c89abb | 1263 | r = unit_name_from_path(prefix, ".mount", &p); |
9588bc32 LP |
1264 | if (r < 0) |
1265 | return r; | |
c7c89abb FB |
1266 | |
1267 | m = manager_get_unit(u->manager, p); | |
1268 | if (!m) { | |
1269 | /* Make sure to load the mount unit if | |
1270 | * it exists. If so the dependencies | |
1271 | * on this unit will be added later | |
1272 | * during the loading of the mount | |
1273 | * unit. */ | |
1274 | (void) manager_load_unit_prepare(u->manager, p, NULL, NULL, &m); | |
9588bc32 | 1275 | continue; |
c7c89abb | 1276 | } |
9588bc32 LP |
1277 | if (m == u) |
1278 | continue; | |
1279 | ||
1280 | if (m->load_state != UNIT_LOADED) | |
1281 | continue; | |
1282 | ||
1283 | r = unit_add_dependency(u, UNIT_AFTER, m, true); | |
1284 | if (r < 0) | |
1285 | return r; | |
1286 | ||
1287 | if (m->fragment_path) { | |
1288 | r = unit_add_dependency(u, UNIT_REQUIRES, m, true); | |
1289 | if (r < 0) | |
1290 | return r; | |
1291 | } | |
1292 | } | |
1293 | } | |
1294 | ||
1295 | return 0; | |
1296 | } | |
1297 | ||
95ae05c0 WC |
1298 | static int unit_add_startup_units(Unit *u) { |
1299 | CGroupContext *c; | |
5269eb6b | 1300 | int r; |
95ae05c0 WC |
1301 | |
1302 | c = unit_get_cgroup_context(u); | |
db785129 LP |
1303 | if (!c) |
1304 | return 0; | |
1305 | ||
d53d9474 | 1306 | if (c->startup_cpu_shares == CGROUP_CPU_SHARES_INVALID && |
13c31542 | 1307 | c->startup_io_weight == CGROUP_WEIGHT_INVALID && |
d53d9474 | 1308 | c->startup_blockio_weight == CGROUP_BLKIO_WEIGHT_INVALID) |
db785129 LP |
1309 | return 0; |
1310 | ||
5269eb6b LP |
1311 | r = set_ensure_allocated(&u->manager->startup_units, NULL); |
1312 | if (r < 0) | |
1313 | return r; | |
1314 | ||
756c09e6 | 1315 | return set_put(u->manager->startup_units, u); |
95ae05c0 WC |
1316 | } |
1317 | ||
87f0e418 LP |
1318 | int unit_load(Unit *u) { |
1319 | int r; | |
1320 | ||
1321 | assert(u); | |
1322 | ||
ac155bb8 | 1323 | if (u->in_load_queue) { |
71fda00f | 1324 | LIST_REMOVE(load_queue, u->manager->load_queue, u); |
ac155bb8 | 1325 | u->in_load_queue = false; |
87f0e418 LP |
1326 | } |
1327 | ||
ac155bb8 | 1328 | if (u->type == _UNIT_TYPE_INVALID) |
e537352b LP |
1329 | return -EINVAL; |
1330 | ||
ac155bb8 | 1331 | if (u->load_state != UNIT_STUB) |
87f0e418 LP |
1332 | return 0; |
1333 | ||
4f4afc88 LP |
1334 | if (u->transient_file) { |
1335 | r = fflush_and_check(u->transient_file); | |
1336 | if (r < 0) | |
1337 | goto fail; | |
1338 | ||
1339 | fclose(u->transient_file); | |
1340 | u->transient_file = NULL; | |
f9ba08fb | 1341 | |
f76707da | 1342 | u->fragment_mtime = now(CLOCK_REALTIME); |
4f4afc88 LP |
1343 | } |
1344 | ||
c2756a68 LP |
1345 | if (UNIT_VTABLE(u)->load) { |
1346 | r = UNIT_VTABLE(u)->load(u); | |
1347 | if (r < 0) | |
87f0e418 | 1348 | goto fail; |
c2756a68 | 1349 | } |
23a177ef | 1350 | |
ac155bb8 | 1351 | if (u->load_state == UNIT_STUB) { |
23a177ef LP |
1352 | r = -ENOENT; |
1353 | goto fail; | |
1354 | } | |
1355 | ||
7c8fa05c | 1356 | if (u->load_state == UNIT_LOADED) { |
c2756a68 | 1357 | |
e954c9cf LP |
1358 | r = unit_add_target_dependencies(u); |
1359 | if (r < 0) | |
1360 | goto fail; | |
1361 | ||
1362 | r = unit_add_slice_dependencies(u); | |
1363 | if (r < 0) | |
1364 | goto fail; | |
c2756a68 | 1365 | |
e954c9cf | 1366 | r = unit_add_mount_dependencies(u); |
7c8fa05c | 1367 | if (r < 0) |
c2756a68 | 1368 | goto fail; |
7c8fa05c | 1369 | |
95ae05c0 WC |
1370 | r = unit_add_startup_units(u); |
1371 | if (r < 0) | |
1372 | goto fail; | |
1373 | ||
bc432dc7 | 1374 | if (u->on_failure_job_mode == JOB_ISOLATE && set_size(u->dependencies[UNIT_ON_FAILURE]) > 1) { |
f2341e0a | 1375 | log_unit_error(u, "More than one OnFailure= dependencies specified but OnFailureJobMode=isolate set. Refusing."); |
c2756a68 LP |
1376 | r = -EINVAL; |
1377 | goto fail; | |
1378 | } | |
bc432dc7 | 1379 | |
a2df3ea4 MK |
1380 | if (u->job_running_timeout != USEC_INFINITY && u->job_running_timeout > u->job_timeout) |
1381 | log_unit_warning(u, "JobRunningTimeoutSec= is greater than JobTimeoutSec=, it has no effect."); | |
1382 | ||
bc432dc7 | 1383 | unit_update_cgroup_members_masks(u); |
f68319bb LP |
1384 | } |
1385 | ||
ac155bb8 | 1386 | assert((u->load_state != UNIT_MERGED) == !u->merged_into); |
23a177ef LP |
1387 | |
1388 | unit_add_to_dbus_queue(unit_follow_merge(u)); | |
701cc384 | 1389 | unit_add_to_gc_queue(u); |
87f0e418 | 1390 | |
87f0e418 LP |
1391 | return 0; |
1392 | ||
1393 | fail: | |
c2756a68 | 1394 | u->load_state = u->load_state == UNIT_STUB ? UNIT_NOT_FOUND : UNIT_ERROR; |
ac155bb8 | 1395 | u->load_error = r; |
c1e1601e | 1396 | unit_add_to_dbus_queue(u); |
9a46fc3b | 1397 | unit_add_to_gc_queue(u); |
23a177ef | 1398 | |
f2341e0a | 1399 | log_unit_debug_errno(u, r, "Failed to load configuration: %m"); |
23a177ef | 1400 | |
87f0e418 LP |
1401 | return r; |
1402 | } | |
1403 | ||
49365733 LP |
1404 | static bool unit_condition_test_list(Unit *u, Condition *first, const char *(*to_string)(ConditionType t)) { |
1405 | Condition *c; | |
1406 | int triggered = -1; | |
1407 | ||
1408 | assert(u); | |
1409 | assert(to_string); | |
1410 | ||
1411 | /* If the condition list is empty, then it is true */ | |
1412 | if (!first) | |
1413 | return true; | |
1414 | ||
1415 | /* Otherwise, if all of the non-trigger conditions apply and | |
1416 | * if any of the trigger conditions apply (unless there are | |
1417 | * none) we return true */ | |
1418 | LIST_FOREACH(conditions, c, first) { | |
1419 | int r; | |
1420 | ||
1421 | r = condition_test(c); | |
1422 | if (r < 0) | |
f2341e0a LP |
1423 | log_unit_warning(u, |
1424 | "Couldn't determine result for %s=%s%s%s, assuming failed: %m", | |
49365733 LP |
1425 | to_string(c->type), |
1426 | c->trigger ? "|" : "", | |
1427 | c->negate ? "!" : "", | |
f2341e0a | 1428 | c->parameter); |
49365733 | 1429 | else |
f2341e0a LP |
1430 | log_unit_debug(u, |
1431 | "%s=%s%s%s %s.", | |
49365733 LP |
1432 | to_string(c->type), |
1433 | c->trigger ? "|" : "", | |
1434 | c->negate ? "!" : "", | |
1435 | c->parameter, | |
f2341e0a | 1436 | condition_result_to_string(c->result)); |
49365733 LP |
1437 | |
1438 | if (!c->trigger && r <= 0) | |
1439 | return false; | |
1440 | ||
1441 | if (c->trigger && triggered <= 0) | |
1442 | triggered = r > 0; | |
1443 | } | |
1444 | ||
1445 | return triggered != 0; | |
1446 | } | |
1447 | ||
9588bc32 | 1448 | static bool unit_condition_test(Unit *u) { |
90bbc946 LP |
1449 | assert(u); |
1450 | ||
ac155bb8 | 1451 | dual_timestamp_get(&u->condition_timestamp); |
49365733 | 1452 | u->condition_result = unit_condition_test_list(u, u->conditions, condition_type_to_string); |
90bbc946 | 1453 | |
ac155bb8 | 1454 | return u->condition_result; |
90bbc946 LP |
1455 | } |
1456 | ||
59fccdc5 LP |
1457 | static bool unit_assert_test(Unit *u) { |
1458 | assert(u); | |
1459 | ||
1460 | dual_timestamp_get(&u->assert_timestamp); | |
49365733 | 1461 | u->assert_result = unit_condition_test_list(u, u->asserts, assert_type_to_string); |
59fccdc5 LP |
1462 | |
1463 | return u->assert_result; | |
1464 | } | |
1465 | ||
df446f96 LP |
1466 | void unit_status_printf(Unit *u, const char *status, const char *unit_status_msg_format) { |
1467 | DISABLE_WARNING_FORMAT_NONLITERAL; | |
1468 | manager_status_printf(u->manager, STATUS_TYPE_NORMAL, status, unit_status_msg_format, unit_description(u)); | |
1469 | REENABLE_WARNING; | |
1470 | } | |
1471 | ||
44a6b1b6 | 1472 | _pure_ static const char* unit_get_status_message_format(Unit *u, JobType t) { |
877d54e9 | 1473 | const char *format; |
a85ca902 | 1474 | const UnitStatusMessageFormats *format_table; |
877d54e9 LP |
1475 | |
1476 | assert(u); | |
df446f96 | 1477 | assert(IN_SET(t, JOB_START, JOB_STOP, JOB_RELOAD)); |
877d54e9 | 1478 | |
b5bf308b | 1479 | if (t != JOB_RELOAD) { |
a85ca902 MS |
1480 | format_table = &UNIT_VTABLE(u)->status_message_formats; |
1481 | if (format_table) { | |
1482 | format = format_table->starting_stopping[t == JOB_STOP]; | |
1483 | if (format) | |
1484 | return format; | |
1485 | } | |
1486 | } | |
877d54e9 LP |
1487 | |
1488 | /* Return generic strings */ | |
1489 | if (t == JOB_START) | |
1490 | return "Starting %s."; | |
1491 | else if (t == JOB_STOP) | |
1492 | return "Stopping %s."; | |
b5bf308b | 1493 | else |
877d54e9 | 1494 | return "Reloading %s."; |
877d54e9 LP |
1495 | } |
1496 | ||
1497 | static void unit_status_print_starting_stopping(Unit *u, JobType t) { | |
1498 | const char *format; | |
1499 | ||
1500 | assert(u); | |
1501 | ||
df446f96 LP |
1502 | /* Reload status messages have traditionally not been printed to console. */ |
1503 | if (!IN_SET(t, JOB_START, JOB_STOP)) | |
1504 | return; | |
1505 | ||
877d54e9 | 1506 | format = unit_get_status_message_format(u, t); |
c6918296 | 1507 | |
bcfce235 | 1508 | DISABLE_WARNING_FORMAT_NONLITERAL; |
49b1d377 | 1509 | unit_status_printf(u, "", format); |
bcfce235 | 1510 | REENABLE_WARNING; |
c6918296 MS |
1511 | } |
1512 | ||
877d54e9 | 1513 | static void unit_status_log_starting_stopping_reloading(Unit *u, JobType t) { |
2b044526 | 1514 | const char *format, *mid; |
877d54e9 | 1515 | char buf[LINE_MAX]; |
877d54e9 LP |
1516 | |
1517 | assert(u); | |
1518 | ||
df446f96 | 1519 | if (!IN_SET(t, JOB_START, JOB_STOP, JOB_RELOAD)) |
877d54e9 LP |
1520 | return; |
1521 | ||
81270860 LP |
1522 | if (log_on_console()) |
1523 | return; | |
1524 | ||
877d54e9 LP |
1525 | /* We log status messages for all units and all operations. */ |
1526 | ||
a85ca902 | 1527 | format = unit_get_status_message_format(u, t); |
877d54e9 | 1528 | |
bcfce235 | 1529 | DISABLE_WARNING_FORMAT_NONLITERAL; |
e68eedbb | 1530 | snprintf(buf, sizeof buf, format, unit_description(u)); |
bcfce235 | 1531 | REENABLE_WARNING; |
877d54e9 | 1532 | |
2b044526 ZJS |
1533 | mid = t == JOB_START ? "MESSAGE_ID=" SD_MESSAGE_UNIT_STARTING_STR : |
1534 | t == JOB_STOP ? "MESSAGE_ID=" SD_MESSAGE_UNIT_STOPPING_STR : | |
1535 | "MESSAGE_ID=" SD_MESSAGE_UNIT_RELOADING_STR; | |
877d54e9 | 1536 | |
f2341e0a LP |
1537 | /* Note that we deliberately use LOG_MESSAGE() instead of |
1538 | * LOG_UNIT_MESSAGE() here, since this is supposed to mimic | |
1539 | * closely what is written to screen using the status output, | |
1540 | * which is supposed the highest level, friendliest output | |
1541 | * possible, which means we should avoid the low-level unit | |
1542 | * name. */ | |
1543 | log_struct(LOG_INFO, | |
f2341e0a | 1544 | LOG_MESSAGE("%s", buf), |
ba360bb0 ZJS |
1545 | LOG_UNIT_ID(u), |
1546 | mid, | |
f2341e0a | 1547 | NULL); |
877d54e9 | 1548 | } |
877d54e9 | 1549 | |
d1a34ae9 | 1550 | void unit_status_emit_starting_stopping_reloading(Unit *u, JobType t) { |
df446f96 LP |
1551 | assert(u); |
1552 | assert(t >= 0); | |
1553 | assert(t < _JOB_TYPE_MAX); | |
d1a34ae9 MS |
1554 | |
1555 | unit_status_log_starting_stopping_reloading(u, t); | |
df446f96 | 1556 | unit_status_print_starting_stopping(u, t); |
d1a34ae9 MS |
1557 | } |
1558 | ||
07299350 | 1559 | int unit_start_limit_test(Unit *u) { |
6bf0f408 LP |
1560 | assert(u); |
1561 | ||
1562 | if (ratelimit_test(&u->start_limit)) { | |
1563 | u->start_limit_hit = false; | |
1564 | return 0; | |
1565 | } | |
1566 | ||
1567 | log_unit_warning(u, "Start request repeated too quickly."); | |
1568 | u->start_limit_hit = true; | |
1569 | ||
87a47f99 | 1570 | return emergency_action(u->manager, u->start_limit_action, u->reboot_arg, "unit failed"); |
6bf0f408 LP |
1571 | } |
1572 | ||
c891efaf | 1573 | bool unit_shall_confirm_spawn(Unit *u) { |
631b676b | 1574 | assert(u); |
c891efaf FB |
1575 | |
1576 | if (manager_is_confirm_spawn_disabled(u->manager)) | |
1577 | return false; | |
1578 | ||
1579 | /* For some reasons units remaining in the same process group | |
1580 | * as PID 1 fail to acquire the console even if it's not used | |
1581 | * by any process. So skip the confirmation question for them. */ | |
1582 | return !unit_get_exec_context(u)->same_pgrp; | |
1583 | } | |
1584 | ||
631b676b LP |
1585 | static bool unit_verify_deps(Unit *u) { |
1586 | Unit *other; | |
1587 | Iterator j; | |
1588 | ||
1589 | assert(u); | |
1590 | ||
1591 | /* Checks whether all BindsTo= dependencies of this unit are fulfilled — if they are also combined with | |
1592 | * After=. We do not check Requires= or Requisite= here as they only should have an effect on the job | |
1593 | * processing, but do not have any effect afterwards. We don't check BindsTo= dependencies that are not used in | |
1594 | * conjunction with After= as for them any such check would make things entirely racy. */ | |
1595 | ||
1596 | SET_FOREACH(other, u->dependencies[UNIT_BINDS_TO], j) { | |
1597 | ||
1598 | if (!set_contains(u->dependencies[UNIT_AFTER], other)) | |
1599 | continue; | |
1600 | ||
1601 | if (!UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(other))) { | |
1602 | log_unit_notice(u, "Bound to unit %s, but unit isn't active.", other->id); | |
1603 | return false; | |
1604 | } | |
1605 | } | |
1606 | ||
1607 | return true; | |
1608 | } | |
1609 | ||
87f0e418 | 1610 | /* Errors: |
6bf0f408 LP |
1611 | * -EBADR: This unit type does not support starting. |
1612 | * -EALREADY: Unit is already started. | |
1613 | * -EAGAIN: An operation is already in progress. Retry later. | |
1614 | * -ECANCELED: Too many requests for now. | |
1615 | * -EPROTO: Assert failed | |
1616 | * -EINVAL: Unit not loaded | |
1617 | * -EOPNOTSUPP: Unit type not supported | |
631b676b | 1618 | * -ENOLINK: The necessary dependencies are not fulfilled. |
87f0e418 LP |
1619 | */ |
1620 | int unit_start(Unit *u) { | |
1621 | UnitActiveState state; | |
92ab323c | 1622 | Unit *following; |
87f0e418 LP |
1623 | |
1624 | assert(u); | |
1625 | ||
a82e5507 LP |
1626 | /* If this is already started, then this will succeed. Note |
1627 | * that this will even succeed if this unit is not startable | |
1628 | * by the user. This is relied on to detect when we need to | |
1629 | * wait for units and when waiting is finished. */ | |
87f0e418 LP |
1630 | state = unit_active_state(u); |
1631 | if (UNIT_IS_ACTIVE_OR_RELOADING(state)) | |
1632 | return -EALREADY; | |
1633 | ||
6bf0f408 LP |
1634 | /* Units that aren't loaded cannot be started */ |
1635 | if (u->load_state != UNIT_LOADED) | |
1636 | return -EINVAL; | |
1637 | ||
a82e5507 LP |
1638 | /* If the conditions failed, don't do anything at all. If we |
1639 | * already are activating this call might still be useful to | |
1640 | * speed up activation in case there is some hold-off time, | |
1641 | * but we don't want to recheck the condition in that case. */ | |
1642 | if (state != UNIT_ACTIVATING && | |
1643 | !unit_condition_test(u)) { | |
f2341e0a | 1644 | log_unit_debug(u, "Starting requested but condition failed. Not starting unit."); |
52661efd LP |
1645 | return -EALREADY; |
1646 | } | |
1647 | ||
59fccdc5 LP |
1648 | /* If the asserts failed, fail the entire job */ |
1649 | if (state != UNIT_ACTIVATING && | |
1650 | !unit_assert_test(u)) { | |
f2341e0a | 1651 | log_unit_notice(u, "Starting requested but asserts failed."); |
59fccdc5 LP |
1652 | return -EPROTO; |
1653 | } | |
1654 | ||
d11a7645 LP |
1655 | /* Units of types that aren't supported cannot be |
1656 | * started. Note that we do this test only after the condition | |
1657 | * checks, so that we rather return condition check errors | |
1658 | * (which are usually not considered a true failure) than "not | |
1659 | * supported" errors (which are considered a failure). | |
1660 | */ | |
1661 | if (!unit_supported(u)) | |
1662 | return -EOPNOTSUPP; | |
1663 | ||
631b676b LP |
1664 | /* Let's make sure that the deps really are in order before we start this. Normally the job engine should have |
1665 | * taken care of this already, but let's check this here again. After all, our dependencies might not be in | |
1666 | * effect anymore, due to a reload or due to a failed condition. */ | |
1667 | if (!unit_verify_deps(u)) | |
1668 | return -ENOLINK; | |
1669 | ||
92ab323c | 1670 | /* Forward to the main object, if we aren't it. */ |
52990c2e ZJS |
1671 | following = unit_following(u); |
1672 | if (following) { | |
f2341e0a | 1673 | log_unit_debug(u, "Redirecting start request from %s to %s.", u->id, following->id); |
92ab323c LP |
1674 | return unit_start(following); |
1675 | } | |
1676 | ||
1677 | /* If it is stopped, but we cannot start it, then fail */ | |
1678 | if (!UNIT_VTABLE(u)->start) | |
1679 | return -EBADR; | |
1680 | ||
87f0e418 LP |
1681 | /* We don't suppress calls to ->start() here when we are |
1682 | * already starting, to allow this request to be used as a | |
1683 | * "hurry up" call, for example when the unit is in some "auto | |
1684 | * restart" state where it waits for a holdoff timer to elapse | |
1685 | * before it will start again. */ | |
1686 | ||
c1e1601e | 1687 | unit_add_to_dbus_queue(u); |
9e58ff9c | 1688 | |
d1a34ae9 | 1689 | return UNIT_VTABLE(u)->start(u); |
87f0e418 LP |
1690 | } |
1691 | ||
1692 | bool unit_can_start(Unit *u) { | |
1693 | assert(u); | |
1694 | ||
8ff4d2ab LP |
1695 | if (u->load_state != UNIT_LOADED) |
1696 | return false; | |
1697 | ||
1698 | if (!unit_supported(u)) | |
1699 | return false; | |
1700 | ||
87f0e418 LP |
1701 | return !!UNIT_VTABLE(u)->start; |
1702 | } | |
1703 | ||
2528a7a6 LP |
1704 | bool unit_can_isolate(Unit *u) { |
1705 | assert(u); | |
1706 | ||
1707 | return unit_can_start(u) && | |
ac155bb8 | 1708 | u->allow_isolate; |
2528a7a6 LP |
1709 | } |
1710 | ||
87f0e418 LP |
1711 | /* Errors: |
1712 | * -EBADR: This unit type does not support stopping. | |
1713 | * -EALREADY: Unit is already stopped. | |
1714 | * -EAGAIN: An operation is already in progress. Retry later. | |
1715 | */ | |
1716 | int unit_stop(Unit *u) { | |
1717 | UnitActiveState state; | |
92ab323c | 1718 | Unit *following; |
87f0e418 LP |
1719 | |
1720 | assert(u); | |
1721 | ||
87f0e418 | 1722 | state = unit_active_state(u); |
fdf20a31 | 1723 | if (UNIT_IS_INACTIVE_OR_FAILED(state)) |
87f0e418 LP |
1724 | return -EALREADY; |
1725 | ||
0faacd47 LP |
1726 | following = unit_following(u); |
1727 | if (following) { | |
f2341e0a | 1728 | log_unit_debug(u, "Redirecting stop request from %s to %s.", u->id, following->id); |
92ab323c LP |
1729 | return unit_stop(following); |
1730 | } | |
1731 | ||
7898b0cf LP |
1732 | if (!UNIT_VTABLE(u)->stop) |
1733 | return -EBADR; | |
1734 | ||
c1e1601e | 1735 | unit_add_to_dbus_queue(u); |
9e58ff9c | 1736 | |
d1a34ae9 | 1737 | return UNIT_VTABLE(u)->stop(u); |
87f0e418 LP |
1738 | } |
1739 | ||
f5869324 LP |
1740 | bool unit_can_stop(Unit *u) { |
1741 | assert(u); | |
1742 | ||
1743 | if (!unit_supported(u)) | |
1744 | return false; | |
1745 | ||
1746 | if (u->perpetual) | |
1747 | return false; | |
1748 | ||
1749 | return !!UNIT_VTABLE(u)->stop; | |
1750 | } | |
1751 | ||
87f0e418 LP |
1752 | /* Errors: |
1753 | * -EBADR: This unit type does not support reloading. | |
1754 | * -ENOEXEC: Unit is not started. | |
1755 | * -EAGAIN: An operation is already in progress. Retry later. | |
1756 | */ | |
1757 | int unit_reload(Unit *u) { | |
1758 | UnitActiveState state; | |
92ab323c | 1759 | Unit *following; |
87f0e418 LP |
1760 | |
1761 | assert(u); | |
1762 | ||
ac155bb8 | 1763 | if (u->load_state != UNIT_LOADED) |
6124958c LP |
1764 | return -EINVAL; |
1765 | ||
87f0e418 LP |
1766 | if (!unit_can_reload(u)) |
1767 | return -EBADR; | |
1768 | ||
1769 | state = unit_active_state(u); | |
e364ad06 | 1770 | if (state == UNIT_RELOADING) |
87f0e418 LP |
1771 | return -EALREADY; |
1772 | ||
6a371e23 | 1773 | if (state != UNIT_ACTIVE) { |
f2341e0a | 1774 | log_unit_warning(u, "Unit cannot be reloaded because it is inactive."); |
87f0e418 | 1775 | return -ENOEXEC; |
6a371e23 | 1776 | } |
87f0e418 | 1777 | |
e48614c4 ZJS |
1778 | following = unit_following(u); |
1779 | if (following) { | |
f2341e0a | 1780 | log_unit_debug(u, "Redirecting reload request from %s to %s.", u->id, following->id); |
92ab323c LP |
1781 | return unit_reload(following); |
1782 | } | |
1783 | ||
c1e1601e | 1784 | unit_add_to_dbus_queue(u); |
82a2b6bb | 1785 | |
f54bcca5 JR |
1786 | if (!UNIT_VTABLE(u)->reload) { |
1787 | /* Unit doesn't have a reload function, but we need to propagate the reload anyway */ | |
1788 | unit_notify(u, unit_active_state(u), unit_active_state(u), true); | |
1789 | return 0; | |
1790 | } | |
1791 | ||
d1a34ae9 | 1792 | return UNIT_VTABLE(u)->reload(u); |
87f0e418 LP |
1793 | } |
1794 | ||
1795 | bool unit_can_reload(Unit *u) { | |
1796 | assert(u); | |
1797 | ||
f54bcca5 JR |
1798 | if (UNIT_VTABLE(u)->can_reload) |
1799 | return UNIT_VTABLE(u)->can_reload(u); | |
87f0e418 | 1800 | |
f54bcca5 | 1801 | if (!set_isempty(u->dependencies[UNIT_PROPAGATES_RELOAD_TO])) |
87f0e418 LP |
1802 | return true; |
1803 | ||
f54bcca5 | 1804 | return UNIT_VTABLE(u)->reload; |
87f0e418 LP |
1805 | } |
1806 | ||
b4a16b7b | 1807 | static void unit_check_unneeded(Unit *u) { |
be7d9ff7 | 1808 | |
4afd3348 | 1809 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
4bd29fe5 | 1810 | |
be7d9ff7 LP |
1811 | static const UnitDependency needed_dependencies[] = { |
1812 | UNIT_REQUIRED_BY, | |
084918ba | 1813 | UNIT_REQUISITE_OF, |
be7d9ff7 LP |
1814 | UNIT_WANTED_BY, |
1815 | UNIT_BOUND_BY, | |
1816 | }; | |
1817 | ||
f3bff0eb | 1818 | Unit *other; |
be7d9ff7 LP |
1819 | Iterator i; |
1820 | unsigned j; | |
1821 | int r; | |
f3bff0eb LP |
1822 | |
1823 | assert(u); | |
1824 | ||
1825 | /* If this service shall be shut down when unneeded then do | |
1826 | * so. */ | |
1827 | ||
ac155bb8 | 1828 | if (!u->stop_when_unneeded) |
f3bff0eb LP |
1829 | return; |
1830 | ||
1831 | if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) | |
1832 | return; | |
1833 | ||
be7d9ff7 | 1834 | for (j = 0; j < ELEMENTSOF(needed_dependencies); j++) |
f3b85044 | 1835 | SET_FOREACH(other, u->dependencies[needed_dependencies[j]], i) |
be7d9ff7 LP |
1836 | if (unit_active_or_pending(other)) |
1837 | return; | |
b81884e7 | 1838 | |
595bfe7d | 1839 | /* If stopping a unit fails continuously we might enter a stop |
bea355da LP |
1840 | * loop here, hence stop acting on the service being |
1841 | * unnecessary after a while. */ | |
67bfdc97 | 1842 | if (!ratelimit_test(&u->auto_stop_ratelimit)) { |
bea355da LP |
1843 | log_unit_warning(u, "Unit not needed anymore, but not stopping since we tried this too often recently."); |
1844 | return; | |
1845 | } | |
1846 | ||
f2341e0a | 1847 | log_unit_info(u, "Unit not needed anymore. Stopping."); |
f3bff0eb LP |
1848 | |
1849 | /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */ | |
4bd29fe5 | 1850 | r = manager_add_job(u->manager, JOB_STOP, u, JOB_FAIL, &error, NULL); |
be7d9ff7 | 1851 | if (r < 0) |
4bd29fe5 | 1852 | log_unit_warning_errno(u, r, "Failed to enqueue stop job, ignoring: %s", bus_error_message(&error, r)); |
f3bff0eb LP |
1853 | } |
1854 | ||
ff502445 | 1855 | static void unit_check_binds_to(Unit *u) { |
4afd3348 | 1856 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
ff502445 LP |
1857 | bool stop = false; |
1858 | Unit *other; | |
1859 | Iterator i; | |
67bfdc97 | 1860 | int r; |
ff502445 LP |
1861 | |
1862 | assert(u); | |
1863 | ||
1864 | if (u->job) | |
1865 | return; | |
1866 | ||
1867 | if (unit_active_state(u) != UNIT_ACTIVE) | |
1868 | return; | |
1869 | ||
1870 | SET_FOREACH(other, u->dependencies[UNIT_BINDS_TO], i) { | |
1871 | if (other->job) | |
1872 | continue; | |
13ddc3fc ZJS |
1873 | |
1874 | if (!other->coldplugged) | |
1875 | /* We might yet create a job for the other unit… */ | |
1876 | continue; | |
ff502445 LP |
1877 | |
1878 | if (!UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other))) | |
1879 | continue; | |
1880 | ||
1881 | stop = true; | |
98f738b6 | 1882 | break; |
ff502445 LP |
1883 | } |
1884 | ||
1885 | if (!stop) | |
1886 | return; | |
1887 | ||
595bfe7d | 1888 | /* If stopping a unit fails continuously we might enter a stop |
67bfdc97 LP |
1889 | * loop here, hence stop acting on the service being |
1890 | * unnecessary after a while. */ | |
1891 | if (!ratelimit_test(&u->auto_stop_ratelimit)) { | |
1892 | log_unit_warning(u, "Unit is bound to inactive unit %s, but not stopping since we tried this too often recently.", other->id); | |
1893 | return; | |
1894 | } | |
1895 | ||
98f738b6 | 1896 | assert(other); |
f2341e0a | 1897 | log_unit_info(u, "Unit is bound to inactive unit %s. Stopping, too.", other->id); |
ff502445 LP |
1898 | |
1899 | /* A unit we need to run is gone. Sniff. Let's stop this. */ | |
4bd29fe5 | 1900 | r = manager_add_job(u->manager, JOB_STOP, u, JOB_FAIL, &error, NULL); |
67bfdc97 | 1901 | if (r < 0) |
4bd29fe5 | 1902 | log_unit_warning_errno(u, r, "Failed to enqueue stop job, ignoring: %s", bus_error_message(&error, r)); |
ff502445 LP |
1903 | } |
1904 | ||
87f0e418 LP |
1905 | static void retroactively_start_dependencies(Unit *u) { |
1906 | Iterator i; | |
1907 | Unit *other; | |
1908 | ||
1909 | assert(u); | |
1910 | assert(UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))); | |
1911 | ||
ac155bb8 MS |
1912 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRES], i) |
1913 | if (!set_get(u->dependencies[UNIT_AFTER], other) && | |
b81884e7 | 1914 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
4bd29fe5 | 1915 | manager_add_job(u->manager, JOB_START, other, JOB_REPLACE, NULL, NULL); |
b81884e7 | 1916 | |
7f2cddae | 1917 | SET_FOREACH(other, u->dependencies[UNIT_BINDS_TO], i) |
ac155bb8 | 1918 | if (!set_get(u->dependencies[UNIT_AFTER], other) && |
b81884e7 | 1919 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
4bd29fe5 | 1920 | manager_add_job(u->manager, JOB_START, other, JOB_REPLACE, NULL, NULL); |
87f0e418 | 1921 | |
ac155bb8 MS |
1922 | SET_FOREACH(other, u->dependencies[UNIT_WANTS], i) |
1923 | if (!set_get(u->dependencies[UNIT_AFTER], other) && | |
b81884e7 | 1924 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
4bd29fe5 | 1925 | manager_add_job(u->manager, JOB_START, other, JOB_FAIL, NULL, NULL); |
87f0e418 | 1926 | |
ac155bb8 | 1927 | SET_FOREACH(other, u->dependencies[UNIT_CONFLICTS], i) |
b81884e7 | 1928 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
4bd29fe5 | 1929 | manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, NULL, NULL); |
69dd2852 | 1930 | |
ac155bb8 | 1931 | SET_FOREACH(other, u->dependencies[UNIT_CONFLICTED_BY], i) |
b81884e7 | 1932 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
4bd29fe5 | 1933 | manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, NULL, NULL); |
87f0e418 LP |
1934 | } |
1935 | ||
1936 | static void retroactively_stop_dependencies(Unit *u) { | |
1937 | Iterator i; | |
1938 | Unit *other; | |
1939 | ||
1940 | assert(u); | |
1941 | assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))); | |
1942 | ||
b81884e7 | 1943 | /* Pull down units which are bound to us recursively if enabled */ |
ac155bb8 | 1944 | SET_FOREACH(other, u->dependencies[UNIT_BOUND_BY], i) |
b81884e7 | 1945 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
4bd29fe5 | 1946 | manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, NULL, NULL); |
cd0504d0 MS |
1947 | } |
1948 | ||
1949 | static void check_unneeded_dependencies(Unit *u) { | |
1950 | Iterator i; | |
1951 | Unit *other; | |
1952 | ||
1953 | assert(u); | |
1954 | assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))); | |
f3bff0eb LP |
1955 | |
1956 | /* Garbage collect services that might not be needed anymore, if enabled */ | |
ac155bb8 | 1957 | SET_FOREACH(other, u->dependencies[UNIT_REQUIRES], i) |
87f0e418 | 1958 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1959 | unit_check_unneeded(other); |
ac155bb8 | 1960 | SET_FOREACH(other, u->dependencies[UNIT_WANTS], i) |
f3bff0eb | 1961 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1962 | unit_check_unneeded(other); |
ac155bb8 | 1963 | SET_FOREACH(other, u->dependencies[UNIT_REQUISITE], i) |
f3bff0eb | 1964 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 1965 | unit_check_unneeded(other); |
7f2cddae | 1966 | SET_FOREACH(other, u->dependencies[UNIT_BINDS_TO], i) |
b81884e7 LP |
1967 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
1968 | unit_check_unneeded(other); | |
87f0e418 LP |
1969 | } |
1970 | ||
3ecaa09b | 1971 | void unit_start_on_failure(Unit *u) { |
c0daa706 LP |
1972 | Unit *other; |
1973 | Iterator i; | |
1974 | ||
1975 | assert(u); | |
1976 | ||
ac155bb8 | 1977 | if (set_size(u->dependencies[UNIT_ON_FAILURE]) <= 0) |
222ae6a8 LP |
1978 | return; |
1979 | ||
f2341e0a | 1980 | log_unit_info(u, "Triggering OnFailure= dependencies."); |
222ae6a8 | 1981 | |
ac155bb8 | 1982 | SET_FOREACH(other, u->dependencies[UNIT_ON_FAILURE], i) { |
222ae6a8 LP |
1983 | int r; |
1984 | ||
4bd29fe5 | 1985 | r = manager_add_job(u->manager, JOB_START, other, u->on_failure_job_mode, NULL, NULL); |
c1b6628d | 1986 | if (r < 0) |
f2341e0a | 1987 | log_unit_error_errno(u, r, "Failed to enqueue OnFailure= job: %m"); |
222ae6a8 | 1988 | } |
c0daa706 LP |
1989 | } |
1990 | ||
3ecaa09b LP |
1991 | void unit_trigger_notify(Unit *u) { |
1992 | Unit *other; | |
1993 | Iterator i; | |
1994 | ||
1995 | assert(u); | |
1996 | ||
1997 | SET_FOREACH(other, u->dependencies[UNIT_TRIGGERED_BY], i) | |
1998 | if (UNIT_VTABLE(other)->trigger_notify) | |
1999 | UNIT_VTABLE(other)->trigger_notify(other, u); | |
2000 | } | |
2001 | ||
e2f3b44c | 2002 | void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_success) { |
546ac4f0 | 2003 | Manager *m; |
7e6e7b06 | 2004 | bool unexpected; |
a096ed36 | 2005 | |
87f0e418 LP |
2006 | assert(u); |
2007 | assert(os < _UNIT_ACTIVE_STATE_MAX); | |
2008 | assert(ns < _UNIT_ACTIVE_STATE_MAX); | |
87f0e418 | 2009 | |
8e471ccd LP |
2010 | /* Note that this is called for all low-level state changes, |
2011 | * even if they might map to the same high-level | |
865cc19a | 2012 | * UnitActiveState! That means that ns == os is an expected |
c5315881 | 2013 | * behavior here. For example: if a mount point is remounted |
cd6d0a45 | 2014 | * this function will be called too! */ |
87f0e418 | 2015 | |
546ac4f0 MS |
2016 | m = u->manager; |
2017 | ||
f755e3b7 | 2018 | /* Update timestamps for state changes */ |
2c289ea8 | 2019 | if (!MANAGER_IS_RELOADING(m)) { |
a483fb59 | 2020 | dual_timestamp_get(&u->state_change_timestamp); |
173e3821 | 2021 | |
bdbf9951 | 2022 | if (UNIT_IS_INACTIVE_OR_FAILED(os) && !UNIT_IS_INACTIVE_OR_FAILED(ns)) |
a483fb59 | 2023 | u->inactive_exit_timestamp = u->state_change_timestamp; |
bdbf9951 | 2024 | else if (!UNIT_IS_INACTIVE_OR_FAILED(os) && UNIT_IS_INACTIVE_OR_FAILED(ns)) |
a483fb59 | 2025 | u->inactive_enter_timestamp = u->state_change_timestamp; |
bdbf9951 LP |
2026 | |
2027 | if (!UNIT_IS_ACTIVE_OR_RELOADING(os) && UNIT_IS_ACTIVE_OR_RELOADING(ns)) | |
a483fb59 | 2028 | u->active_enter_timestamp = u->state_change_timestamp; |
bdbf9951 | 2029 | else if (UNIT_IS_ACTIVE_OR_RELOADING(os) && !UNIT_IS_ACTIVE_OR_RELOADING(ns)) |
a483fb59 | 2030 | u->active_exit_timestamp = u->state_change_timestamp; |
bdbf9951 | 2031 | } |
87f0e418 | 2032 | |
865cc19a | 2033 | /* Keep track of failed units */ |
5269eb6b | 2034 | (void) manager_update_failed_units(u->manager, u, ns == UNIT_FAILED); |
f755e3b7 LP |
2035 | |
2036 | /* Make sure the cgroup is always removed when we become inactive */ | |
fdf20a31 | 2037 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
efdb0237 | 2038 | unit_prune_cgroup(u); |
fb385181 | 2039 | |
9cd86184 | 2040 | /* Note that this doesn't apply to RemainAfterExit services exiting |
6f285378 | 2041 | * successfully, since there's no change of state in that case. Which is |
9cd86184 | 2042 | * why it is handled in service_set_state() */ |
7ed9f6cd | 2043 | if (UNIT_IS_INACTIVE_OR_FAILED(os) != UNIT_IS_INACTIVE_OR_FAILED(ns)) { |
b33918c2 LP |
2044 | ExecContext *ec; |
2045 | ||
2046 | ec = unit_get_exec_context(u); | |
7ed9f6cd | 2047 | if (ec && exec_context_may_touch_console(ec)) { |
31a7eb86 | 2048 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) { |
313cefa1 | 2049 | m->n_on_console--; |
31a7eb86 ZJS |
2050 | |
2051 | if (m->n_on_console == 0) | |
2052 | /* unset no_console_output flag, since the console is free */ | |
2f38577f | 2053 | m->no_console_output = false; |
31a7eb86 | 2054 | } else |
313cefa1 | 2055 | m->n_on_console++; |
7ed9f6cd MS |
2056 | } |
2057 | } | |
2058 | ||
ac155bb8 | 2059 | if (u->job) { |
7e6e7b06 | 2060 | unexpected = false; |
87f0e418 | 2061 | |
ac155bb8 | 2062 | if (u->job->state == JOB_WAITING) |
87f0e418 LP |
2063 | |
2064 | /* So we reached a different state for this | |
2065 | * job. Let's see if we can run it now if it | |
2066 | * failed previously due to EAGAIN. */ | |
ac155bb8 | 2067 | job_add_to_run_queue(u->job); |
87f0e418 | 2068 | |
b410e6b9 | 2069 | /* Let's check whether this state change constitutes a |
35b8ca3a | 2070 | * finished job, or maybe contradicts a running job and |
b410e6b9 | 2071 | * hence needs to invalidate jobs. */ |
87f0e418 | 2072 | |
ac155bb8 | 2073 | switch (u->job->type) { |
87f0e418 | 2074 | |
b410e6b9 LP |
2075 | case JOB_START: |
2076 | case JOB_VERIFY_ACTIVE: | |
87f0e418 | 2077 | |
b410e6b9 | 2078 | if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) |
833f92ad | 2079 | job_finish_and_invalidate(u->job, JOB_DONE, true, false); |
ac155bb8 | 2080 | else if (u->job->state == JOB_RUNNING && ns != UNIT_ACTIVATING) { |
b410e6b9 | 2081 | unexpected = true; |
41b02ec7 | 2082 | |
fdf20a31 | 2083 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
833f92ad | 2084 | job_finish_and_invalidate(u->job, ns == UNIT_FAILED ? JOB_FAILED : JOB_DONE, true, false); |
b410e6b9 | 2085 | } |
87f0e418 | 2086 | |
b410e6b9 | 2087 | break; |
87f0e418 | 2088 | |
b410e6b9 LP |
2089 | case JOB_RELOAD: |
2090 | case JOB_RELOAD_OR_START: | |
3282591d | 2091 | case JOB_TRY_RELOAD: |
87f0e418 | 2092 | |
ac155bb8 | 2093 | if (u->job->state == JOB_RUNNING) { |
a096ed36 | 2094 | if (ns == UNIT_ACTIVE) |
833f92ad | 2095 | job_finish_and_invalidate(u->job, reload_success ? JOB_DONE : JOB_FAILED, true, false); |
032ff4af | 2096 | else if (ns != UNIT_ACTIVATING && ns != UNIT_RELOADING) { |
a096ed36 | 2097 | unexpected = true; |
41b02ec7 | 2098 | |
fdf20a31 | 2099 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
833f92ad | 2100 | job_finish_and_invalidate(u->job, ns == UNIT_FAILED ? JOB_FAILED : JOB_DONE, true, false); |
a096ed36 | 2101 | } |
b410e6b9 | 2102 | } |
87f0e418 | 2103 | |
b410e6b9 | 2104 | break; |
87f0e418 | 2105 | |
b410e6b9 LP |
2106 | case JOB_STOP: |
2107 | case JOB_RESTART: | |
2108 | case JOB_TRY_RESTART: | |
87f0e418 | 2109 | |
fdf20a31 | 2110 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
833f92ad | 2111 | job_finish_and_invalidate(u->job, JOB_DONE, true, false); |
ac155bb8 | 2112 | else if (u->job->state == JOB_RUNNING && ns != UNIT_DEACTIVATING) { |
b410e6b9 | 2113 | unexpected = true; |
833f92ad | 2114 | job_finish_and_invalidate(u->job, JOB_FAILED, true, false); |
b410e6b9 | 2115 | } |
87f0e418 | 2116 | |
b410e6b9 | 2117 | break; |
87f0e418 | 2118 | |
b410e6b9 LP |
2119 | default: |
2120 | assert_not_reached("Job type unknown"); | |
87f0e418 | 2121 | } |
87f0e418 | 2122 | |
7e6e7b06 LP |
2123 | } else |
2124 | unexpected = true; | |
2125 | ||
2c289ea8 | 2126 | if (!MANAGER_IS_RELOADING(m)) { |
f3bff0eb | 2127 | |
bdbf9951 LP |
2128 | /* If this state change happened without being |
2129 | * requested by a job, then let's retroactively start | |
2130 | * or stop dependencies. We skip that step when | |
2131 | * deserializing, since we don't want to create any | |
2132 | * additional jobs just because something is already | |
2133 | * activated. */ | |
2134 | ||
2135 | if (unexpected) { | |
2136 | if (UNIT_IS_INACTIVE_OR_FAILED(os) && UNIT_IS_ACTIVE_OR_ACTIVATING(ns)) | |
2137 | retroactively_start_dependencies(u); | |
2138 | else if (UNIT_IS_ACTIVE_OR_ACTIVATING(os) && UNIT_IS_INACTIVE_OR_DEACTIVATING(ns)) | |
2139 | retroactively_stop_dependencies(u); | |
2140 | } | |
5de9682c | 2141 | |
cd0504d0 | 2142 | /* stop unneeded units regardless if going down was expected or not */ |
b33918c2 | 2143 | if (UNIT_IS_INACTIVE_OR_DEACTIVATING(ns)) |
cd0504d0 MS |
2144 | check_unneeded_dependencies(u); |
2145 | ||
bdbf9951 | 2146 | if (ns != os && ns == UNIT_FAILED) { |
f2341e0a | 2147 | log_unit_notice(u, "Unit entered failed state."); |
3ecaa09b | 2148 | unit_start_on_failure(u); |
cd6d0a45 | 2149 | } |
3b2775c5 | 2150 | } |
e537352b | 2151 | |
3b2775c5 LP |
2152 | /* Some names are special */ |
2153 | if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) { | |
2154 | ||
2155 | if (unit_has_name(u, SPECIAL_DBUS_SERVICE)) | |
865cc19a | 2156 | /* The bus might have just become available, |
3b2775c5 LP |
2157 | * hence try to connect to it, if we aren't |
2158 | * yet connected. */ | |
546ac4f0 | 2159 | bus_init(m, true); |
3b2775c5 | 2160 | |
ac155bb8 | 2161 | if (u->type == UNIT_SERVICE && |
3b2775c5 | 2162 | !UNIT_IS_ACTIVE_OR_RELOADING(os) && |
2c289ea8 | 2163 | !MANAGER_IS_RELOADING(m)) { |
3b2775c5 | 2164 | /* Write audit record if we have just finished starting up */ |
546ac4f0 | 2165 | manager_send_unit_audit(m, u, AUDIT_SERVICE_START, true); |
ac155bb8 | 2166 | u->in_audit = true; |
3b2775c5 | 2167 | } |
e983b760 | 2168 | |
3b2775c5 | 2169 | if (!UNIT_IS_ACTIVE_OR_RELOADING(os)) |
546ac4f0 | 2170 | manager_send_unit_plymouth(m, u); |
bdbf9951 | 2171 | |
3b2775c5 | 2172 | } else { |
bdbf9951 | 2173 | |
3b2775c5 LP |
2174 | /* We don't care about D-Bus here, since we'll get an |
2175 | * asynchronous notification for it anyway. */ | |
cd6d0a45 | 2176 | |
ac155bb8 | 2177 | if (u->type == UNIT_SERVICE && |
3b2775c5 LP |
2178 | UNIT_IS_INACTIVE_OR_FAILED(ns) && |
2179 | !UNIT_IS_INACTIVE_OR_FAILED(os) && | |
2c289ea8 | 2180 | !MANAGER_IS_RELOADING(m)) { |
4927fcae | 2181 | |
3b2775c5 LP |
2182 | /* Hmm, if there was no start record written |
2183 | * write it now, so that we always have a nice | |
2184 | * pair */ | |
ac155bb8 | 2185 | if (!u->in_audit) { |
546ac4f0 | 2186 | manager_send_unit_audit(m, u, AUDIT_SERVICE_START, ns == UNIT_INACTIVE); |
cd6d0a45 | 2187 | |
3b2775c5 | 2188 | if (ns == UNIT_INACTIVE) |
546ac4f0 | 2189 | manager_send_unit_audit(m, u, AUDIT_SERVICE_STOP, true); |
3b2775c5 LP |
2190 | } else |
2191 | /* Write audit record if we have just finished shutting down */ | |
546ac4f0 | 2192 | manager_send_unit_audit(m, u, AUDIT_SERVICE_STOP, ns == UNIT_INACTIVE); |
bdbf9951 | 2193 | |
ac155bb8 | 2194 | u->in_audit = false; |
cd6d0a45 | 2195 | } |
f278026d LP |
2196 | } |
2197 | ||
546ac4f0 | 2198 | manager_recheck_journal(m); |
3ecaa09b | 2199 | unit_trigger_notify(u); |
3b2775c5 | 2200 | |
2c289ea8 | 2201 | if (!MANAGER_IS_RELOADING(u->manager)) { |
ff502445 LP |
2202 | /* Maybe we finished startup and are now ready for |
2203 | * being stopped because unneeded? */ | |
bf6dcfa6 | 2204 | unit_check_unneeded(u); |
c1e1601e | 2205 | |
ff502445 LP |
2206 | /* Maybe we finished startup, but something we needed |
2207 | * has vanished? Let's die then. (This happens when | |
2208 | * something BindsTo= to a Type=oneshot unit, as these | |
2209 | * units go directly from starting to inactive, | |
2210 | * without ever entering started.) */ | |
2211 | unit_check_binds_to(u); | |
2212 | } | |
2213 | ||
c1e1601e | 2214 | unit_add_to_dbus_queue(u); |
701cc384 | 2215 | unit_add_to_gc_queue(u); |
87f0e418 LP |
2216 | } |
2217 | ||
87f0e418 | 2218 | int unit_watch_pid(Unit *u, pid_t pid) { |
a911bb9a LP |
2219 | int q, r; |
2220 | ||
87f0e418 LP |
2221 | assert(u); |
2222 | assert(pid >= 1); | |
2223 | ||
5ba6985b LP |
2224 | /* Watch a specific PID. We only support one or two units |
2225 | * watching each PID for now, not more. */ | |
2226 | ||
d5099efc | 2227 | r = set_ensure_allocated(&u->pids, NULL); |
5ba6985b LP |
2228 | if (r < 0) |
2229 | return r; | |
2230 | ||
d5099efc | 2231 | r = hashmap_ensure_allocated(&u->manager->watch_pids1, NULL); |
a911bb9a LP |
2232 | if (r < 0) |
2233 | return r; | |
2234 | ||
fea72cc0 | 2235 | r = hashmap_put(u->manager->watch_pids1, PID_TO_PTR(pid), u); |
5ba6985b | 2236 | if (r == -EEXIST) { |
d5099efc | 2237 | r = hashmap_ensure_allocated(&u->manager->watch_pids2, NULL); |
5ba6985b LP |
2238 | if (r < 0) |
2239 | return r; | |
05e343b7 | 2240 | |
fea72cc0 | 2241 | r = hashmap_put(u->manager->watch_pids2, PID_TO_PTR(pid), u); |
5ba6985b | 2242 | } |
a911bb9a | 2243 | |
fea72cc0 | 2244 | q = set_put(u->pids, PID_TO_PTR(pid)); |
a911bb9a LP |
2245 | if (q < 0) |
2246 | return q; | |
2247 | ||
2248 | return r; | |
87f0e418 LP |
2249 | } |
2250 | ||
2251 | void unit_unwatch_pid(Unit *u, pid_t pid) { | |
2252 | assert(u); | |
2253 | assert(pid >= 1); | |
2254 | ||
fea72cc0 LP |
2255 | (void) hashmap_remove_value(u->manager->watch_pids1, PID_TO_PTR(pid), u); |
2256 | (void) hashmap_remove_value(u->manager->watch_pids2, PID_TO_PTR(pid), u); | |
2257 | (void) set_remove(u->pids, PID_TO_PTR(pid)); | |
a911bb9a LP |
2258 | } |
2259 | ||
bd44e61b LP |
2260 | void unit_unwatch_all_pids(Unit *u) { |
2261 | assert(u); | |
2262 | ||
2263 | while (!set_isempty(u->pids)) | |
fea72cc0 | 2264 | unit_unwatch_pid(u, PTR_TO_PID(set_first(u->pids))); |
bd44e61b | 2265 | |
efdb0237 | 2266 | u->pids = set_free(u->pids); |
a911bb9a LP |
2267 | } |
2268 | ||
2269 | void unit_tidy_watch_pids(Unit *u, pid_t except1, pid_t except2) { | |
2270 | Iterator i; | |
2271 | void *e; | |
2272 | ||
2273 | assert(u); | |
2274 | ||
2275 | /* Cleans dead PIDs from our list */ | |
2276 | ||
2277 | SET_FOREACH(e, u->pids, i) { | |
fea72cc0 | 2278 | pid_t pid = PTR_TO_PID(e); |
a911bb9a LP |
2279 | |
2280 | if (pid == except1 || pid == except2) | |
2281 | continue; | |
2282 | ||
9f5650ae | 2283 | if (!pid_is_unwaited(pid)) |
bd44e61b | 2284 | unit_unwatch_pid(u, pid); |
a911bb9a | 2285 | } |
87f0e418 LP |
2286 | } |
2287 | ||
87f0e418 LP |
2288 | bool unit_job_is_applicable(Unit *u, JobType j) { |
2289 | assert(u); | |
2290 | assert(j >= 0 && j < _JOB_TYPE_MAX); | |
2291 | ||
2292 | switch (j) { | |
2293 | ||
2294 | case JOB_VERIFY_ACTIVE: | |
2295 | case JOB_START: | |
e0209d83 | 2296 | case JOB_NOP: |
f5869324 LP |
2297 | /* Note that we don't check unit_can_start() here. That's because .device units and suchlike are not |
2298 | * startable by us but may appear due to external events, and it thus makes sense to permit enqueing | |
2299 | * jobs for it. */ | |
87f0e418 LP |
2300 | return true; |
2301 | ||
f5869324 LP |
2302 | case JOB_STOP: |
2303 | /* Similar as above. However, perpetual units can never be stopped (neither explicitly nor due to | |
2304 | * external events), hence it makes no sense to permit enqueing such a request either. */ | |
2305 | return !u->perpetual; | |
2306 | ||
87f0e418 LP |
2307 | case JOB_RESTART: |
2308 | case JOB_TRY_RESTART: | |
f5869324 | 2309 | return unit_can_stop(u) && unit_can_start(u); |
87f0e418 LP |
2310 | |
2311 | case JOB_RELOAD: | |
3282591d | 2312 | case JOB_TRY_RELOAD: |
87f0e418 LP |
2313 | return unit_can_reload(u); |
2314 | ||
2315 | case JOB_RELOAD_OR_START: | |
2316 | return unit_can_reload(u) && unit_can_start(u); | |
2317 | ||
2318 | default: | |
2319 | assert_not_reached("Invalid job type"); | |
2320 | } | |
2321 | } | |
2322 | ||
f2341e0a LP |
2323 | static void maybe_warn_about_dependency(Unit *u, const char *other, UnitDependency dependency) { |
2324 | assert(u); | |
d1fab3fe | 2325 | |
f2341e0a LP |
2326 | /* Only warn about some unit types */ |
2327 | if (!IN_SET(dependency, UNIT_CONFLICTS, UNIT_CONFLICTED_BY, UNIT_BEFORE, UNIT_AFTER, UNIT_ON_FAILURE, UNIT_TRIGGERS, UNIT_TRIGGERED_BY)) | |
2328 | return; | |
3f3cc397 | 2329 | |
f2341e0a LP |
2330 | if (streq_ptr(u->id, other)) |
2331 | log_unit_warning(u, "Dependency %s=%s dropped", unit_dependency_to_string(dependency), u->id); | |
2332 | else | |
2333 | log_unit_warning(u, "Dependency %s=%s dropped, merged into %s", unit_dependency_to_string(dependency), strna(other), u->id); | |
d1fab3fe ZJS |
2334 | } |
2335 | ||
701cc384 | 2336 | int unit_add_dependency(Unit *u, UnitDependency d, Unit *other, bool add_reference) { |
87f0e418 LP |
2337 | |
2338 | static const UnitDependency inverse_table[_UNIT_DEPENDENCY_MAX] = { | |
2339 | [UNIT_REQUIRES] = UNIT_REQUIRED_BY, | |
87f0e418 | 2340 | [UNIT_WANTS] = UNIT_WANTED_BY, |
be7d9ff7 | 2341 | [UNIT_REQUISITE] = UNIT_REQUISITE_OF, |
7f2cddae | 2342 | [UNIT_BINDS_TO] = UNIT_BOUND_BY, |
60649f17 | 2343 | [UNIT_PART_OF] = UNIT_CONSISTS_OF, |
be7d9ff7 | 2344 | [UNIT_REQUIRED_BY] = UNIT_REQUIRES, |
be7d9ff7 | 2345 | [UNIT_REQUISITE_OF] = UNIT_REQUISITE, |
be7d9ff7 | 2346 | [UNIT_WANTED_BY] = UNIT_WANTS, |
7f2cddae | 2347 | [UNIT_BOUND_BY] = UNIT_BINDS_TO, |
60649f17 | 2348 | [UNIT_CONSISTS_OF] = UNIT_PART_OF, |
69dd2852 LP |
2349 | [UNIT_CONFLICTS] = UNIT_CONFLICTED_BY, |
2350 | [UNIT_CONFLICTED_BY] = UNIT_CONFLICTS, | |
87f0e418 | 2351 | [UNIT_BEFORE] = UNIT_AFTER, |
701cc384 | 2352 | [UNIT_AFTER] = UNIT_BEFORE, |
5de9682c | 2353 | [UNIT_ON_FAILURE] = _UNIT_DEPENDENCY_INVALID, |
701cc384 | 2354 | [UNIT_REFERENCES] = UNIT_REFERENCED_BY, |
57020a3a LP |
2355 | [UNIT_REFERENCED_BY] = UNIT_REFERENCES, |
2356 | [UNIT_TRIGGERS] = UNIT_TRIGGERED_BY, | |
4dcc1cb4 | 2357 | [UNIT_TRIGGERED_BY] = UNIT_TRIGGERS, |
7f2cddae | 2358 | [UNIT_PROPAGATES_RELOAD_TO] = UNIT_RELOAD_PROPAGATED_FROM, |
85e9a101 | 2359 | [UNIT_RELOAD_PROPAGATED_FROM] = UNIT_PROPAGATES_RELOAD_TO, |
613b411c | 2360 | [UNIT_JOINS_NAMESPACE_OF] = UNIT_JOINS_NAMESPACE_OF, |
87f0e418 | 2361 | }; |
701cc384 | 2362 | int r, q = 0, v = 0, w = 0; |
d1fab3fe | 2363 | Unit *orig_u = u, *orig_other = other; |
87f0e418 LP |
2364 | |
2365 | assert(u); | |
2366 | assert(d >= 0 && d < _UNIT_DEPENDENCY_MAX); | |
87f0e418 LP |
2367 | assert(other); |
2368 | ||
9f151f29 LP |
2369 | u = unit_follow_merge(u); |
2370 | other = unit_follow_merge(other); | |
2371 | ||
87f0e418 LP |
2372 | /* We won't allow dependencies on ourselves. We will not |
2373 | * consider them an error however. */ | |
d1fab3fe | 2374 | if (u == other) { |
f2341e0a | 2375 | maybe_warn_about_dependency(orig_u, orig_other->id, d); |
87f0e418 | 2376 | return 0; |
d1fab3fe | 2377 | } |
87f0e418 | 2378 | |
dd5e7000 ZJS |
2379 | if (d == UNIT_BEFORE && other->type == UNIT_DEVICE) { |
2380 | log_unit_warning(u, "Dependency Before=%s ignored (.device units cannot be delayed)", other->id); | |
2381 | return 0; | |
2382 | } | |
2383 | ||
d5099efc | 2384 | r = set_ensure_allocated(&u->dependencies[d], NULL); |
613b411c | 2385 | if (r < 0) |
87f0e418 LP |
2386 | return r; |
2387 | ||
613b411c | 2388 | if (inverse_table[d] != _UNIT_DEPENDENCY_INVALID) { |
d5099efc | 2389 | r = set_ensure_allocated(&other->dependencies[inverse_table[d]], NULL); |
613b411c LP |
2390 | if (r < 0) |
2391 | return r; | |
2392 | } | |
2393 | ||
2394 | if (add_reference) { | |
d5099efc | 2395 | r = set_ensure_allocated(&u->dependencies[UNIT_REFERENCES], NULL); |
613b411c | 2396 | if (r < 0) |
5de9682c LP |
2397 | return r; |
2398 | ||
d5099efc | 2399 | r = set_ensure_allocated(&other->dependencies[UNIT_REFERENCED_BY], NULL); |
613b411c | 2400 | if (r < 0) |
701cc384 | 2401 | return r; |
613b411c | 2402 | } |
87f0e418 | 2403 | |
613b411c LP |
2404 | q = set_put(u->dependencies[d], other); |
2405 | if (q < 0) | |
701cc384 | 2406 | return q; |
87f0e418 | 2407 | |
613b411c LP |
2408 | if (inverse_table[d] != _UNIT_DEPENDENCY_INVALID && inverse_table[d] != d) { |
2409 | v = set_put(other->dependencies[inverse_table[d]], u); | |
2410 | if (v < 0) { | |
5de9682c LP |
2411 | r = v; |
2412 | goto fail; | |
2413 | } | |
613b411c | 2414 | } |
701cc384 LP |
2415 | |
2416 | if (add_reference) { | |
613b411c LP |
2417 | w = set_put(u->dependencies[UNIT_REFERENCES], other); |
2418 | if (w < 0) { | |
701cc384 LP |
2419 | r = w; |
2420 | goto fail; | |
2421 | } | |
2422 | ||
613b411c LP |
2423 | r = set_put(other->dependencies[UNIT_REFERENCED_BY], u); |
2424 | if (r < 0) | |
701cc384 | 2425 | goto fail; |
87f0e418 LP |
2426 | } |
2427 | ||
c1e1601e | 2428 | unit_add_to_dbus_queue(u); |
87f0e418 | 2429 | return 0; |
701cc384 LP |
2430 | |
2431 | fail: | |
2432 | if (q > 0) | |
ac155bb8 | 2433 | set_remove(u->dependencies[d], other); |
701cc384 LP |
2434 | |
2435 | if (v > 0) | |
ac155bb8 | 2436 | set_remove(other->dependencies[inverse_table[d]], u); |
701cc384 LP |
2437 | |
2438 | if (w > 0) | |
ac155bb8 | 2439 | set_remove(u->dependencies[UNIT_REFERENCES], other); |
701cc384 LP |
2440 | |
2441 | return r; | |
87f0e418 | 2442 | } |
0301abf4 | 2443 | |
2c966c03 LP |
2444 | int unit_add_two_dependencies(Unit *u, UnitDependency d, UnitDependency e, Unit *other, bool add_reference) { |
2445 | int r; | |
2446 | ||
2447 | assert(u); | |
2448 | ||
3f3cc397 LP |
2449 | r = unit_add_dependency(u, d, other, add_reference); |
2450 | if (r < 0) | |
2c966c03 LP |
2451 | return r; |
2452 | ||
7410616c | 2453 | return unit_add_dependency(u, e, other, add_reference); |
2c966c03 LP |
2454 | } |
2455 | ||
7410616c LP |
2456 | static int resolve_template(Unit *u, const char *name, const char*path, char **buf, const char **ret) { |
2457 | int r; | |
9e2f7c11 LP |
2458 | |
2459 | assert(u); | |
2460 | assert(name || path); | |
7410616c LP |
2461 | assert(buf); |
2462 | assert(ret); | |
9e2f7c11 LP |
2463 | |
2464 | if (!name) | |
2b6bf07d | 2465 | name = basename(path); |
9e2f7c11 | 2466 | |
7410616c LP |
2467 | if (!unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) { |
2468 | *buf = NULL; | |
2469 | *ret = name; | |
2470 | return 0; | |
9e2f7c11 LP |
2471 | } |
2472 | ||
ac155bb8 | 2473 | if (u->instance) |
7410616c | 2474 | r = unit_name_replace_instance(name, u->instance, buf); |
9e2f7c11 | 2475 | else { |
ae018d9b | 2476 | _cleanup_free_ char *i = NULL; |
9e2f7c11 | 2477 | |
7410616c LP |
2478 | r = unit_name_to_prefix(u->id, &i); |
2479 | if (r < 0) | |
2480 | return r; | |
9e2f7c11 | 2481 | |
7410616c | 2482 | r = unit_name_replace_instance(name, i, buf); |
9e2f7c11 | 2483 | } |
7410616c LP |
2484 | if (r < 0) |
2485 | return r; | |
9e2f7c11 | 2486 | |
7410616c LP |
2487 | *ret = *buf; |
2488 | return 0; | |
9e2f7c11 LP |
2489 | } |
2490 | ||
701cc384 | 2491 | int unit_add_dependency_by_name(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) { |
7410616c | 2492 | _cleanup_free_ char *buf = NULL; |
09b6b09f LP |
2493 | Unit *other; |
2494 | int r; | |
2495 | ||
9e2f7c11 LP |
2496 | assert(u); |
2497 | assert(name || path); | |
09b6b09f | 2498 | |
7410616c LP |
2499 | r = resolve_template(u, name, path, &buf, &name); |
2500 | if (r < 0) | |
2501 | return r; | |
09b6b09f | 2502 | |
8afbb8e1 LP |
2503 | r = manager_load_unit(u->manager, name, path, NULL, &other); |
2504 | if (r < 0) | |
2505 | return r; | |
9e2f7c11 | 2506 | |
8afbb8e1 | 2507 | return unit_add_dependency(u, d, other, add_reference); |
09b6b09f LP |
2508 | } |
2509 | ||
2c966c03 | 2510 | int unit_add_two_dependencies_by_name(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference) { |
7410616c | 2511 | _cleanup_free_ char *buf = NULL; |
2c966c03 LP |
2512 | Unit *other; |
2513 | int r; | |
2c966c03 LP |
2514 | |
2515 | assert(u); | |
2516 | assert(name || path); | |
2517 | ||
7410616c LP |
2518 | r = resolve_template(u, name, path, &buf, &name); |
2519 | if (r < 0) | |
2520 | return r; | |
2c966c03 | 2521 | |
3f3cc397 LP |
2522 | r = manager_load_unit(u->manager, name, path, NULL, &other); |
2523 | if (r < 0) | |
68eda4bd | 2524 | return r; |
2c966c03 | 2525 | |
3f3cc397 | 2526 | return unit_add_two_dependencies(u, d, e, other, add_reference); |
2c966c03 LP |
2527 | } |
2528 | ||
0301abf4 | 2529 | int set_unit_path(const char *p) { |
0301abf4 | 2530 | /* This is mostly for debug purposes */ |
cbe46ead | 2531 | if (setenv("SYSTEMD_UNIT_PATH", p, 1) < 0) |
26d04f86 | 2532 | return -errno; |
0301abf4 LP |
2533 | |
2534 | return 0; | |
2535 | } | |
88066b3a | 2536 | |
ea430986 | 2537 | char *unit_dbus_path(Unit *u) { |
ea430986 LP |
2538 | assert(u); |
2539 | ||
ac155bb8 | 2540 | if (!u->id) |
04ade7d2 LP |
2541 | return NULL; |
2542 | ||
48899192 | 2543 | return unit_dbus_path_from_name(u->id); |
ea430986 LP |
2544 | } |
2545 | ||
4b58153d LP |
2546 | char *unit_dbus_path_invocation_id(Unit *u) { |
2547 | assert(u); | |
2548 | ||
2549 | if (sd_id128_is_null(u->invocation_id)) | |
2550 | return NULL; | |
2551 | ||
2552 | return unit_dbus_path_from_name(u->invocation_id_string); | |
2553 | } | |
2554 | ||
d79200e2 LP |
2555 | int unit_set_slice(Unit *u, Unit *slice) { |
2556 | assert(u); | |
2557 | assert(slice); | |
2558 | ||
2559 | /* Sets the unit slice if it has not been set before. Is extra | |
2560 | * careful, to only allow this for units that actually have a | |
2561 | * cgroup context. Also, we don't allow to set this for slices | |
2562 | * (since the parent slice is derived from the name). Make | |
2563 | * sure the unit we set is actually a slice. */ | |
2564 | ||
2565 | if (!UNIT_HAS_CGROUP_CONTEXT(u)) | |
2566 | return -EOPNOTSUPP; | |
2567 | ||
2568 | if (u->type == UNIT_SLICE) | |
2569 | return -EINVAL; | |
2570 | ||
102ef982 LP |
2571 | if (unit_active_state(u) != UNIT_INACTIVE) |
2572 | return -EBUSY; | |
2573 | ||
d79200e2 LP |
2574 | if (slice->type != UNIT_SLICE) |
2575 | return -EINVAL; | |
2576 | ||
efdb0237 LP |
2577 | if (unit_has_name(u, SPECIAL_INIT_SCOPE) && |
2578 | !unit_has_name(slice, SPECIAL_ROOT_SLICE)) | |
2579 | return -EPERM; | |
2580 | ||
d79200e2 LP |
2581 | if (UNIT_DEREF(u->slice) == slice) |
2582 | return 0; | |
2583 | ||
99e66921 TH |
2584 | /* Disallow slice changes if @u is already bound to cgroups */ |
2585 | if (UNIT_ISSET(u->slice) && u->cgroup_realized) | |
d79200e2 LP |
2586 | return -EBUSY; |
2587 | ||
99e66921 | 2588 | unit_ref_unset(&u->slice); |
d79200e2 LP |
2589 | unit_ref_set(&u->slice, slice); |
2590 | return 1; | |
2591 | } | |
2592 | ||
2593 | int unit_set_default_slice(Unit *u) { | |
a8833944 LP |
2594 | _cleanup_free_ char *b = NULL; |
2595 | const char *slice_name; | |
a016b922 LP |
2596 | Unit *slice; |
2597 | int r; | |
2598 | ||
2599 | assert(u); | |
2600 | ||
9444b1f2 | 2601 | if (UNIT_ISSET(u->slice)) |
a016b922 LP |
2602 | return 0; |
2603 | ||
a8833944 LP |
2604 | if (u->instance) { |
2605 | _cleanup_free_ char *prefix = NULL, *escaped = NULL; | |
68eda4bd | 2606 | |
a8833944 LP |
2607 | /* Implicitly place all instantiated units in their |
2608 | * own per-template slice */ | |
2609 | ||
7410616c LP |
2610 | r = unit_name_to_prefix(u->id, &prefix); |
2611 | if (r < 0) | |
2612 | return r; | |
a8833944 LP |
2613 | |
2614 | /* The prefix is already escaped, but it might include | |
2615 | * "-" which has a special meaning for slice units, | |
2616 | * hence escape it here extra. */ | |
7410616c | 2617 | escaped = unit_name_escape(prefix); |
a8833944 LP |
2618 | if (!escaped) |
2619 | return -ENOMEM; | |
2620 | ||
463d0d15 | 2621 | if (MANAGER_IS_SYSTEM(u->manager)) |
605405c6 | 2622 | b = strjoin("system-", escaped, ".slice"); |
a8833944 LP |
2623 | else |
2624 | b = strappend(escaped, ".slice"); | |
2625 | if (!b) | |
2626 | return -ENOMEM; | |
2627 | ||
2628 | slice_name = b; | |
2629 | } else | |
2630 | slice_name = | |
463d0d15 | 2631 | MANAGER_IS_SYSTEM(u->manager) && !unit_has_name(u, SPECIAL_INIT_SCOPE) |
a8833944 LP |
2632 | ? SPECIAL_SYSTEM_SLICE |
2633 | : SPECIAL_ROOT_SLICE; | |
2634 | ||
2635 | r = manager_load_unit(u->manager, slice_name, NULL, NULL, &slice); | |
a016b922 LP |
2636 | if (r < 0) |
2637 | return r; | |
2638 | ||
d79200e2 | 2639 | return unit_set_slice(u, slice); |
a016b922 LP |
2640 | } |
2641 | ||
9444b1f2 LP |
2642 | const char *unit_slice_name(Unit *u) { |
2643 | assert(u); | |
2644 | ||
2645 | if (!UNIT_ISSET(u->slice)) | |
2646 | return NULL; | |
2647 | ||
2648 | return UNIT_DEREF(u->slice)->id; | |
2649 | } | |
2650 | ||
f6ff8c29 | 2651 | int unit_load_related_unit(Unit *u, const char *type, Unit **_found) { |
78edb35a | 2652 | _cleanup_free_ char *t = NULL; |
f6ff8c29 LP |
2653 | int r; |
2654 | ||
2655 | assert(u); | |
2656 | assert(type); | |
2657 | assert(_found); | |
2658 | ||
7410616c LP |
2659 | r = unit_name_change_suffix(u->id, type, &t); |
2660 | if (r < 0) | |
2661 | return r; | |
2662 | if (unit_has_name(u, t)) | |
2663 | return -EINVAL; | |
f6ff8c29 | 2664 | |
ac155bb8 | 2665 | r = manager_load_unit(u->manager, t, NULL, NULL, _found); |
9e2f7c11 | 2666 | assert(r < 0 || *_found != u); |
f6ff8c29 LP |
2667 | return r; |
2668 | } | |
2669 | ||
bbc29086 DM |
2670 | static int signal_name_owner_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
2671 | const char *name, *old_owner, *new_owner; | |
2672 | Unit *u = userdata; | |
2673 | int r; | |
2674 | ||
2675 | assert(message); | |
2676 | assert(u); | |
2677 | ||
2678 | r = sd_bus_message_read(message, "sss", &name, &old_owner, &new_owner); | |
2679 | if (r < 0) { | |
2680 | bus_log_parse_error(r); | |
2681 | return 0; | |
2682 | } | |
2683 | ||
b0076268 MK |
2684 | old_owner = isempty(old_owner) ? NULL : old_owner; |
2685 | new_owner = isempty(new_owner) ? NULL : new_owner; | |
2686 | ||
bbc29086 DM |
2687 | if (UNIT_VTABLE(u)->bus_name_owner_change) |
2688 | UNIT_VTABLE(u)->bus_name_owner_change(u, name, old_owner, new_owner); | |
2689 | ||
2690 | return 0; | |
2691 | } | |
2692 | ||
9806e87d LP |
2693 | int unit_install_bus_match(Unit *u, sd_bus *bus, const char *name) { |
2694 | const char *match; | |
bbc29086 | 2695 | |
9806e87d LP |
2696 | assert(u); |
2697 | assert(bus); | |
2698 | assert(name); | |
bbc29086 DM |
2699 | |
2700 | if (u->match_bus_slot) | |
2701 | return -EBUSY; | |
2702 | ||
9806e87d | 2703 | match = strjoina("type='signal'," |
81d62103 ZJS |
2704 | "sender='org.freedesktop.DBus'," |
2705 | "path='/org/freedesktop/DBus'," | |
2706 | "interface='org.freedesktop.DBus'," | |
2707 | "member='NameOwnerChanged'," | |
2708 | "arg0='", name, "'"); | |
bbc29086 DM |
2709 | |
2710 | return sd_bus_add_match(bus, &u->match_bus_slot, match, signal_name_owner_changed, u); | |
2711 | } | |
2712 | ||
05e343b7 | 2713 | int unit_watch_bus_name(Unit *u, const char *name) { |
bbc29086 DM |
2714 | int r; |
2715 | ||
05e343b7 LP |
2716 | assert(u); |
2717 | assert(name); | |
2718 | ||
2719 | /* Watch a specific name on the bus. We only support one unit | |
2720 | * watching each name for now. */ | |
2721 | ||
bbc29086 DM |
2722 | if (u->manager->api_bus) { |
2723 | /* If the bus is already available, install the match directly. | |
2724 | * Otherwise, just put the name in the list. bus_setup_api() will take care later. */ | |
9806e87d | 2725 | r = unit_install_bus_match(u, u->manager->api_bus, name); |
bbc29086 | 2726 | if (r < 0) |
8ea823b6 | 2727 | return log_warning_errno(r, "Failed to subscribe to NameOwnerChanged signal for '%s': %m", name); |
bbc29086 DM |
2728 | } |
2729 | ||
2730 | r = hashmap_put(u->manager->watch_bus, name, u); | |
2731 | if (r < 0) { | |
2732 | u->match_bus_slot = sd_bus_slot_unref(u->match_bus_slot); | |
2733 | return log_warning_errno(r, "Failed to put bus name to hashmap: %m"); | |
2734 | } | |
2735 | ||
2736 | return 0; | |
05e343b7 LP |
2737 | } |
2738 | ||
2739 | void unit_unwatch_bus_name(Unit *u, const char *name) { | |
2740 | assert(u); | |
2741 | assert(name); | |
2742 | ||
8367fea5 | 2743 | (void) hashmap_remove_value(u->manager->watch_bus, name, u); |
bbc29086 | 2744 | u->match_bus_slot = sd_bus_slot_unref(u->match_bus_slot); |
05e343b7 LP |
2745 | } |
2746 | ||
a16e1123 LP |
2747 | bool unit_can_serialize(Unit *u) { |
2748 | assert(u); | |
2749 | ||
2750 | return UNIT_VTABLE(u)->serialize && UNIT_VTABLE(u)->deserialize_item; | |
2751 | } | |
2752 | ||
8b108bd0 FB |
2753 | static int unit_serialize_cgroup_mask(FILE *f, const char *key, CGroupMask mask) { |
2754 | _cleanup_free_ char *s = NULL; | |
2755 | int r = 0; | |
2756 | ||
2757 | assert(f); | |
2758 | assert(key); | |
2759 | ||
2760 | if (mask != 0) { | |
2761 | r = cg_mask_to_string(mask, &s); | |
2762 | if (r >= 0) { | |
2763 | fputs(key, f); | |
2764 | fputc('=', f); | |
2765 | fputs(s, f); | |
2766 | fputc('\n', f); | |
2767 | } | |
2768 | } | |
2769 | return r; | |
2770 | } | |
2771 | ||
6b78f9b4 | 2772 | int unit_serialize(Unit *u, FILE *f, FDSet *fds, bool serialize_jobs) { |
a16e1123 LP |
2773 | int r; |
2774 | ||
2775 | assert(u); | |
2776 | assert(f); | |
2777 | assert(fds); | |
2778 | ||
9bdb98c5 LP |
2779 | if (unit_can_serialize(u)) { |
2780 | ExecRuntime *rt; | |
a16e1123 | 2781 | |
9bdb98c5 | 2782 | r = UNIT_VTABLE(u)->serialize(u, f, fds); |
613b411c LP |
2783 | if (r < 0) |
2784 | return r; | |
9bdb98c5 LP |
2785 | |
2786 | rt = unit_get_exec_runtime(u); | |
2787 | if (rt) { | |
f2341e0a | 2788 | r = exec_runtime_serialize(u, rt, f, fds); |
9bdb98c5 LP |
2789 | if (r < 0) |
2790 | return r; | |
2791 | } | |
e0209d83 MS |
2792 | } |
2793 | ||
a483fb59 LP |
2794 | dual_timestamp_serialize(f, "state-change-timestamp", &u->state_change_timestamp); |
2795 | ||
ac155bb8 MS |
2796 | dual_timestamp_serialize(f, "inactive-exit-timestamp", &u->inactive_exit_timestamp); |
2797 | dual_timestamp_serialize(f, "active-enter-timestamp", &u->active_enter_timestamp); | |
2798 | dual_timestamp_serialize(f, "active-exit-timestamp", &u->active_exit_timestamp); | |
2799 | dual_timestamp_serialize(f, "inactive-enter-timestamp", &u->inactive_enter_timestamp); | |
a483fb59 | 2800 | |
ac155bb8 | 2801 | dual_timestamp_serialize(f, "condition-timestamp", &u->condition_timestamp); |
59fccdc5 | 2802 | dual_timestamp_serialize(f, "assert-timestamp", &u->assert_timestamp); |
2791a8f8 | 2803 | |
ac155bb8 MS |
2804 | if (dual_timestamp_is_set(&u->condition_timestamp)) |
2805 | unit_serialize_item(u, f, "condition-result", yes_no(u->condition_result)); | |
10717a1a | 2806 | |
59fccdc5 LP |
2807 | if (dual_timestamp_is_set(&u->assert_timestamp)) |
2808 | unit_serialize_item(u, f, "assert-result", yes_no(u->assert_result)); | |
2809 | ||
c2756a68 | 2810 | unit_serialize_item(u, f, "transient", yes_no(u->transient)); |
fe700f46 | 2811 | |
66ebf6c0 | 2812 | unit_serialize_item_format(u, f, "cpu-usage-base", "%" PRIu64, u->cpu_usage_base); |
fe700f46 LP |
2813 | if (u->cpu_usage_last != NSEC_INFINITY) |
2814 | unit_serialize_item_format(u, f, "cpu-usage-last", "%" PRIu64, u->cpu_usage_last); | |
c2756a68 LP |
2815 | |
2816 | if (u->cgroup_path) | |
2817 | unit_serialize_item(u, f, "cgroup", u->cgroup_path); | |
de1d4f9b | 2818 | unit_serialize_item(u, f, "cgroup-realized", yes_no(u->cgroup_realized)); |
8b108bd0 FB |
2819 | (void) unit_serialize_cgroup_mask(f, "cgroup-realized-mask", u->cgroup_realized_mask); |
2820 | (void) unit_serialize_cgroup_mask(f, "cgroup-enabled-mask", u->cgroup_enabled_mask); | |
906c06f6 | 2821 | unit_serialize_item_format(u, f, "cgroup-bpf-realized", "%i", u->cgroup_bpf_state); |
c2756a68 | 2822 | |
00d9ef85 LP |
2823 | if (uid_is_valid(u->ref_uid)) |
2824 | unit_serialize_item_format(u, f, "ref-uid", UID_FMT, u->ref_uid); | |
2825 | if (gid_is_valid(u->ref_gid)) | |
2826 | unit_serialize_item_format(u, f, "ref-gid", GID_FMT, u->ref_gid); | |
2827 | ||
4b58153d LP |
2828 | if (!sd_id128_is_null(u->invocation_id)) |
2829 | unit_serialize_item_format(u, f, "invocation-id", SD_ID128_FORMAT_STR, SD_ID128_FORMAT_VAL(u->invocation_id)); | |
2830 | ||
05a98afd LP |
2831 | bus_track_serialize(u->bus_track, f, "ref"); |
2832 | ||
613b411c LP |
2833 | if (serialize_jobs) { |
2834 | if (u->job) { | |
2835 | fprintf(f, "job\n"); | |
05a98afd | 2836 | job_serialize(u->job, f); |
613b411c LP |
2837 | } |
2838 | ||
2839 | if (u->nop_job) { | |
2840 | fprintf(f, "job\n"); | |
05a98afd | 2841 | job_serialize(u->nop_job, f); |
613b411c LP |
2842 | } |
2843 | } | |
2844 | ||
a16e1123 LP |
2845 | /* End marker */ |
2846 | fputc('\n', f); | |
2847 | return 0; | |
2848 | } | |
2849 | ||
a34ceba6 LP |
2850 | int unit_serialize_item(Unit *u, FILE *f, const char *key, const char *value) { |
2851 | assert(u); | |
2852 | assert(f); | |
2853 | assert(key); | |
2854 | ||
2855 | if (!value) | |
2856 | return 0; | |
2857 | ||
2858 | fputs(key, f); | |
2859 | fputc('=', f); | |
2860 | fputs(value, f); | |
2861 | fputc('\n', f); | |
2862 | ||
2863 | return 1; | |
2864 | } | |
2865 | ||
2866 | int unit_serialize_item_escaped(Unit *u, FILE *f, const char *key, const char *value) { | |
2867 | _cleanup_free_ char *c = NULL; | |
2868 | ||
2869 | assert(u); | |
2870 | assert(f); | |
2871 | assert(key); | |
2872 | ||
2873 | if (!value) | |
2874 | return 0; | |
2875 | ||
2876 | c = cescape(value); | |
2877 | if (!c) | |
2878 | return -ENOMEM; | |
2879 | ||
2880 | fputs(key, f); | |
2881 | fputc('=', f); | |
2882 | fputs(c, f); | |
2883 | fputc('\n', f); | |
2884 | ||
2885 | return 1; | |
2886 | } | |
2887 | ||
2888 | int unit_serialize_item_fd(Unit *u, FILE *f, FDSet *fds, const char *key, int fd) { | |
2889 | int copy; | |
2890 | ||
2891 | assert(u); | |
2892 | assert(f); | |
2893 | assert(key); | |
2894 | ||
2895 | if (fd < 0) | |
2896 | return 0; | |
2897 | ||
2898 | copy = fdset_put_dup(fds, fd); | |
2899 | if (copy < 0) | |
2900 | return copy; | |
2901 | ||
2902 | fprintf(f, "%s=%i\n", key, copy); | |
2903 | return 1; | |
2904 | } | |
2905 | ||
a16e1123 LP |
2906 | void unit_serialize_item_format(Unit *u, FILE *f, const char *key, const char *format, ...) { |
2907 | va_list ap; | |
2908 | ||
2909 | assert(u); | |
2910 | assert(f); | |
2911 | assert(key); | |
2912 | assert(format); | |
2913 | ||
2914 | fputs(key, f); | |
2915 | fputc('=', f); | |
2916 | ||
2917 | va_start(ap, format); | |
2918 | vfprintf(f, format, ap); | |
2919 | va_end(ap); | |
2920 | ||
2921 | fputc('\n', f); | |
2922 | } | |
2923 | ||
a16e1123 | 2924 | int unit_deserialize(Unit *u, FILE *f, FDSet *fds) { |
28b99ccd | 2925 | ExecRuntime **rt = NULL; |
9bdb98c5 | 2926 | size_t offset; |
a16e1123 LP |
2927 | int r; |
2928 | ||
2929 | assert(u); | |
2930 | assert(f); | |
2931 | assert(fds); | |
2932 | ||
613b411c LP |
2933 | offset = UNIT_VTABLE(u)->exec_runtime_offset; |
2934 | if (offset > 0) | |
2935 | rt = (ExecRuntime**) ((uint8_t*) u + offset); | |
2936 | ||
a16e1123 | 2937 | for (;;) { |
20c03b7b | 2938 | char line[LINE_MAX], *l, *v; |
a16e1123 LP |
2939 | size_t k; |
2940 | ||
2941 | if (!fgets(line, sizeof(line), f)) { | |
2942 | if (feof(f)) | |
2943 | return 0; | |
2944 | return -errno; | |
2945 | } | |
2946 | ||
10f8e83c | 2947 | char_array_0(line); |
a16e1123 LP |
2948 | l = strstrip(line); |
2949 | ||
2950 | /* End marker */ | |
e911de99 | 2951 | if (isempty(l)) |
a483fb59 | 2952 | break; |
a16e1123 LP |
2953 | |
2954 | k = strcspn(l, "="); | |
2955 | ||
2956 | if (l[k] == '=') { | |
2957 | l[k] = 0; | |
2958 | v = l+k+1; | |
2959 | } else | |
2960 | v = l+k; | |
2961 | ||
cca098b0 | 2962 | if (streq(l, "job")) { |
39a18c60 MS |
2963 | if (v[0] == '\0') { |
2964 | /* new-style serialized job */ | |
9c3349e2 LP |
2965 | Job *j; |
2966 | ||
2967 | j = job_new_raw(u); | |
39a18c60 | 2968 | if (!j) |
e911de99 | 2969 | return log_oom(); |
39a18c60 | 2970 | |
05a98afd | 2971 | r = job_deserialize(j, f); |
39a18c60 MS |
2972 | if (r < 0) { |
2973 | job_free(j); | |
2974 | return r; | |
2975 | } | |
cca098b0 | 2976 | |
39a18c60 MS |
2977 | r = hashmap_put(u->manager->jobs, UINT32_TO_PTR(j->id), j); |
2978 | if (r < 0) { | |
2979 | job_free(j); | |
2980 | return r; | |
2981 | } | |
e0209d83 MS |
2982 | |
2983 | r = job_install_deserialized(j); | |
2984 | if (r < 0) { | |
2985 | hashmap_remove(u->manager->jobs, UINT32_TO_PTR(j->id)); | |
2986 | job_free(j); | |
2987 | return r; | |
2988 | } | |
ed10fa8c LP |
2989 | } else /* legacy for pre-44 */ |
2990 | log_unit_warning(u, "Update from too old systemd versions are unsupported, cannot deserialize job: %s", v); | |
cca098b0 | 2991 | continue; |
a483fb59 LP |
2992 | } else if (streq(l, "state-change-timestamp")) { |
2993 | dual_timestamp_deserialize(v, &u->state_change_timestamp); | |
2994 | continue; | |
8aaf019b | 2995 | } else if (streq(l, "inactive-exit-timestamp")) { |
ac155bb8 | 2996 | dual_timestamp_deserialize(v, &u->inactive_exit_timestamp); |
8aaf019b LP |
2997 | continue; |
2998 | } else if (streq(l, "active-enter-timestamp")) { | |
ac155bb8 | 2999 | dual_timestamp_deserialize(v, &u->active_enter_timestamp); |
8aaf019b LP |
3000 | continue; |
3001 | } else if (streq(l, "active-exit-timestamp")) { | |
ac155bb8 | 3002 | dual_timestamp_deserialize(v, &u->active_exit_timestamp); |
8aaf019b LP |
3003 | continue; |
3004 | } else if (streq(l, "inactive-enter-timestamp")) { | |
ac155bb8 | 3005 | dual_timestamp_deserialize(v, &u->inactive_enter_timestamp); |
8aaf019b | 3006 | continue; |
2791a8f8 | 3007 | } else if (streq(l, "condition-timestamp")) { |
ac155bb8 | 3008 | dual_timestamp_deserialize(v, &u->condition_timestamp); |
2791a8f8 | 3009 | continue; |
59fccdc5 LP |
3010 | } else if (streq(l, "assert-timestamp")) { |
3011 | dual_timestamp_deserialize(v, &u->assert_timestamp); | |
3012 | continue; | |
2791a8f8 | 3013 | } else if (streq(l, "condition-result")) { |
2791a8f8 | 3014 | |
e911de99 LP |
3015 | r = parse_boolean(v); |
3016 | if (r < 0) | |
f2341e0a | 3017 | log_unit_debug(u, "Failed to parse condition result value %s, ignoring.", v); |
2791a8f8 | 3018 | else |
e911de99 | 3019 | u->condition_result = r; |
efbac6d2 LP |
3020 | |
3021 | continue; | |
c2756a68 | 3022 | |
59fccdc5 | 3023 | } else if (streq(l, "assert-result")) { |
59fccdc5 | 3024 | |
e911de99 LP |
3025 | r = parse_boolean(v); |
3026 | if (r < 0) | |
f2341e0a | 3027 | log_unit_debug(u, "Failed to parse assert result value %s, ignoring.", v); |
59fccdc5 | 3028 | else |
e911de99 | 3029 | u->assert_result = r; |
59fccdc5 LP |
3030 | |
3031 | continue; | |
3032 | ||
c2756a68 | 3033 | } else if (streq(l, "transient")) { |
c2756a68 | 3034 | |
e911de99 LP |
3035 | r = parse_boolean(v); |
3036 | if (r < 0) | |
f2341e0a | 3037 | log_unit_debug(u, "Failed to parse transient bool %s, ignoring.", v); |
c2756a68 | 3038 | else |
e911de99 | 3039 | u->transient = r; |
c2756a68 LP |
3040 | |
3041 | continue; | |
e911de99 | 3042 | |
fe700f46 | 3043 | } else if (STR_IN_SET(l, "cpu-usage-base", "cpuacct-usage-base")) { |
5ad096b3 | 3044 | |
66ebf6c0 | 3045 | r = safe_atou64(v, &u->cpu_usage_base); |
5ad096b3 | 3046 | if (r < 0) |
fe700f46 LP |
3047 | log_unit_debug(u, "Failed to parse CPU usage base %s, ignoring.", v); |
3048 | ||
3049 | continue; | |
3050 | ||
3051 | } else if (streq(l, "cpu-usage-last")) { | |
3052 | ||
3053 | r = safe_atou64(v, &u->cpu_usage_last); | |
3054 | if (r < 0) | |
3055 | log_unit_debug(u, "Failed to read CPU usage last %s, ignoring.", v); | |
5ad096b3 | 3056 | |
0f908397 | 3057 | continue; |
4e595329 | 3058 | |
e911de99 | 3059 | } else if (streq(l, "cgroup")) { |
72673e86 | 3060 | |
e911de99 LP |
3061 | r = unit_set_cgroup_path(u, v); |
3062 | if (r < 0) | |
f2341e0a | 3063 | log_unit_debug_errno(u, r, "Failed to set cgroup path %s, ignoring: %m", v); |
4e595329 | 3064 | |
efdb0237 LP |
3065 | (void) unit_watch_cgroup(u); |
3066 | ||
de1d4f9b WF |
3067 | continue; |
3068 | } else if (streq(l, "cgroup-realized")) { | |
3069 | int b; | |
3070 | ||
3071 | b = parse_boolean(v); | |
3072 | if (b < 0) | |
3073 | log_unit_debug(u, "Failed to parse cgroup-realized bool %s, ignoring.", v); | |
3074 | else | |
3075 | u->cgroup_realized = b; | |
3076 | ||
c2756a68 | 3077 | continue; |
00d9ef85 | 3078 | |
8b108bd0 FB |
3079 | } else if (streq(l, "cgroup-realized-mask")) { |
3080 | ||
3081 | r = cg_mask_from_string(v, &u->cgroup_realized_mask); | |
3082 | if (r < 0) | |
3083 | log_unit_debug(u, "Failed to parse cgroup-realized-mask %s, ignoring.", v); | |
3084 | continue; | |
3085 | ||
3086 | } else if (streq(l, "cgroup-enabled-mask")) { | |
3087 | ||
3088 | r = cg_mask_from_string(v, &u->cgroup_enabled_mask); | |
3089 | if (r < 0) | |
3090 | log_unit_debug(u, "Failed to parse cgroup-enabled-mask %s, ignoring.", v); | |
3091 | continue; | |
3092 | ||
906c06f6 DM |
3093 | } else if (streq(l, "cgroup-bpf-realized")) { |
3094 | int i; | |
3095 | ||
3096 | r = safe_atoi(v, &i); | |
3097 | if (r < 0) | |
3098 | log_unit_debug(u, "Failed to parse cgroup BPF state %s, ignoring.", v); | |
3099 | else | |
3100 | u->cgroup_bpf_state = | |
3101 | i < 0 ? UNIT_CGROUP_BPF_INVALIDATED : | |
3102 | i > 0 ? UNIT_CGROUP_BPF_ON : | |
3103 | UNIT_CGROUP_BPF_OFF; | |
3104 | ||
3105 | continue; | |
3106 | ||
00d9ef85 LP |
3107 | } else if (streq(l, "ref-uid")) { |
3108 | uid_t uid; | |
3109 | ||
3110 | r = parse_uid(v, &uid); | |
3111 | if (r < 0) | |
3112 | log_unit_debug(u, "Failed to parse referenced UID %s, ignoring.", v); | |
3113 | else | |
3114 | unit_ref_uid_gid(u, uid, GID_INVALID); | |
3115 | ||
3116 | continue; | |
3117 | ||
3118 | } else if (streq(l, "ref-gid")) { | |
3119 | gid_t gid; | |
3120 | ||
3121 | r = parse_gid(v, &gid); | |
3122 | if (r < 0) | |
3123 | log_unit_debug(u, "Failed to parse referenced GID %s, ignoring.", v); | |
3124 | else | |
3125 | unit_ref_uid_gid(u, UID_INVALID, gid); | |
3126 | ||
05a98afd LP |
3127 | } else if (streq(l, "ref")) { |
3128 | ||
3129 | r = strv_extend(&u->deserialized_refs, v); | |
3130 | if (r < 0) | |
3131 | log_oom(); | |
3132 | ||
4b58153d LP |
3133 | continue; |
3134 | } else if (streq(l, "invocation-id")) { | |
3135 | sd_id128_t id; | |
3136 | ||
3137 | r = sd_id128_from_string(v, &id); | |
3138 | if (r < 0) | |
3139 | log_unit_debug(u, "Failed to parse invocation id %s, ignoring.", v); | |
3140 | else { | |
3141 | r = unit_set_invocation_id(u, id); | |
3142 | if (r < 0) | |
3143 | log_unit_warning_errno(u, r, "Failed to set invocation ID for unit: %m"); | |
3144 | } | |
3145 | ||
00d9ef85 | 3146 | continue; |
8aaf019b | 3147 | } |
cca098b0 | 3148 | |
9bdb98c5 LP |
3149 | if (unit_can_serialize(u)) { |
3150 | if (rt) { | |
f2341e0a | 3151 | r = exec_runtime_deserialize_item(u, rt, l, v, fds); |
e911de99 | 3152 | if (r < 0) { |
f2341e0a | 3153 | log_unit_warning(u, "Failed to deserialize runtime parameter '%s', ignoring.", l); |
e911de99 LP |
3154 | continue; |
3155 | } | |
3156 | ||
3157 | /* Returns positive if key was handled by the call */ | |
9bdb98c5 LP |
3158 | if (r > 0) |
3159 | continue; | |
3160 | } | |
3161 | ||
3162 | r = UNIT_VTABLE(u)->deserialize_item(u, l, v, fds); | |
613b411c | 3163 | if (r < 0) |
f2341e0a | 3164 | log_unit_warning(u, "Failed to deserialize unit parameter '%s', ignoring.", l); |
613b411c | 3165 | } |
a16e1123 | 3166 | } |
a483fb59 LP |
3167 | |
3168 | /* Versions before 228 did not carry a state change timestamp. In this case, take the current time. This is | |
3169 | * useful, so that timeouts based on this timestamp don't trigger too early, and is in-line with the logic from | |
1f133e0d | 3170 | * before 228 where the base for timeouts was not persistent across reboots. */ |
a483fb59 LP |
3171 | |
3172 | if (!dual_timestamp_is_set(&u->state_change_timestamp)) | |
3173 | dual_timestamp_get(&u->state_change_timestamp); | |
3174 | ||
3175 | return 0; | |
a16e1123 LP |
3176 | } |
3177 | ||
07429866 ZJS |
3178 | void unit_deserialize_skip(FILE *f) { |
3179 | assert(f); | |
3180 | ||
3181 | /* Skip serialized data for this unit. We don't know what it is. */ | |
3182 | ||
3183 | for (;;) { | |
3184 | char line[LINE_MAX], *l; | |
3185 | ||
3186 | if (!fgets(line, sizeof line, f)) | |
3187 | return; | |
3188 | ||
3189 | char_array_0(line); | |
3190 | l = strstrip(line); | |
3191 | ||
3192 | /* End marker */ | |
3193 | if (isempty(l)) | |
3194 | return; | |
3195 | } | |
3196 | } | |
3197 | ||
3198 | ||
9d06297e | 3199 | int unit_add_node_link(Unit *u, const char *what, bool wants, UnitDependency dep) { |
6e2ef85b | 3200 | Unit *device; |
68eda4bd | 3201 | _cleanup_free_ char *e = NULL; |
6e2ef85b LP |
3202 | int r; |
3203 | ||
3204 | assert(u); | |
3205 | ||
6e2ef85b | 3206 | /* Adds in links to the device node that this unit is based on */ |
47bc12e1 LP |
3207 | if (isempty(what)) |
3208 | return 0; | |
6e2ef85b | 3209 | |
8407a5d0 | 3210 | if (!is_device_path(what)) |
6e2ef85b LP |
3211 | return 0; |
3212 | ||
47bc12e1 LP |
3213 | /* When device units aren't supported (such as in a |
3214 | * container), don't create dependencies on them. */ | |
1c2e9646 | 3215 | if (!unit_type_supported(UNIT_DEVICE)) |
47bc12e1 LP |
3216 | return 0; |
3217 | ||
7410616c LP |
3218 | r = unit_name_from_path(what, ".device", &e); |
3219 | if (r < 0) | |
3220 | return r; | |
6e2ef85b | 3221 | |
ac155bb8 | 3222 | r = manager_load_unit(u->manager, e, NULL, NULL, &device); |
6e2ef85b LP |
3223 | if (r < 0) |
3224 | return r; | |
3225 | ||
ebc8968b FB |
3226 | if (dep == UNIT_REQUIRES && device_shall_be_bound_by(device, u)) |
3227 | dep = UNIT_BINDS_TO; | |
3228 | ||
9d06297e | 3229 | r = unit_add_two_dependencies(u, UNIT_AFTER, |
463d0d15 | 3230 | MANAGER_IS_SYSTEM(u->manager) ? dep : UNIT_WANTS, |
9d06297e | 3231 | device, true); |
faa368e3 | 3232 | if (r < 0) |
6e2ef85b LP |
3233 | return r; |
3234 | ||
faa368e3 LP |
3235 | if (wants) { |
3236 | r = unit_add_dependency(device, UNIT_WANTS, u, false); | |
3237 | if (r < 0) | |
6e2ef85b | 3238 | return r; |
faa368e3 | 3239 | } |
6e2ef85b LP |
3240 | |
3241 | return 0; | |
3242 | } | |
a16e1123 | 3243 | |
be847e82 | 3244 | int unit_coldplug(Unit *u) { |
05a98afd LP |
3245 | int r = 0, q; |
3246 | char **i; | |
cca098b0 LP |
3247 | |
3248 | assert(u); | |
3249 | ||
f78f265f LP |
3250 | /* Make sure we don't enter a loop, when coldplugging |
3251 | * recursively. */ | |
3252 | if (u->coldplugged) | |
3253 | return 0; | |
3254 | ||
3255 | u->coldplugged = true; | |
3256 | ||
05a98afd LP |
3257 | STRV_FOREACH(i, u->deserialized_refs) { |
3258 | q = bus_unit_track_add_name(u, *i); | |
3259 | if (q < 0 && r >= 0) | |
3260 | r = q; | |
3261 | } | |
3262 | u->deserialized_refs = strv_free(u->deserialized_refs); | |
cca098b0 | 3263 | |
05a98afd LP |
3264 | if (UNIT_VTABLE(u)->coldplug) { |
3265 | q = UNIT_VTABLE(u)->coldplug(u); | |
3266 | if (q < 0 && r >= 0) | |
3267 | r = q; | |
3268 | } | |
5a6158b6 | 3269 | |
05a98afd LP |
3270 | if (u->job) { |
3271 | q = job_coldplug(u->job); | |
3272 | if (q < 0 && r >= 0) | |
3273 | r = q; | |
3274 | } | |
cca098b0 | 3275 | |
05a98afd | 3276 | return r; |
cca098b0 LP |
3277 | } |
3278 | ||
ba25d39e | 3279 | static bool fragment_mtime_newer(const char *path, usec_t mtime, bool path_masked) { |
21b95806 ZJS |
3280 | struct stat st; |
3281 | ||
3282 | if (!path) | |
3283 | return false; | |
3284 | ||
77969722 LP |
3285 | /* If the source is some virtual kernel file system, then we assume we watch it anyway, and hence pretend we |
3286 | * are never out-of-date. */ | |
3287 | if (PATH_STARTSWITH_SET(path, "/proc", "/sys")) | |
3288 | return false; | |
3289 | ||
21b95806 ZJS |
3290 | if (stat(path, &st) < 0) |
3291 | /* What, cannot access this anymore? */ | |
3292 | return true; | |
3293 | ||
ba25d39e ZJS |
3294 | if (path_masked) |
3295 | /* For masked files check if they are still so */ | |
3296 | return !null_or_empty(&st); | |
3297 | else | |
3a8db9fe | 3298 | /* For non-empty files check the mtime */ |
87ec20ef | 3299 | return timespec_load(&st.st_mtim) > mtime; |
21b95806 ZJS |
3300 | |
3301 | return false; | |
3302 | } | |
3303 | ||
45fb0699 | 3304 | bool unit_need_daemon_reload(Unit *u) { |
ae7a7182 OS |
3305 | _cleanup_strv_free_ char **t = NULL; |
3306 | char **path; | |
1b64d026 | 3307 | |
45fb0699 LP |
3308 | assert(u); |
3309 | ||
ba25d39e ZJS |
3310 | /* For unit files, we allow masking… */ |
3311 | if (fragment_mtime_newer(u->fragment_path, u->fragment_mtime, | |
3312 | u->load_state == UNIT_MASKED)) | |
21b95806 | 3313 | return true; |
5f4b19f4 | 3314 | |
ba25d39e ZJS |
3315 | /* Source paths should not be masked… */ |
3316 | if (fragment_mtime_newer(u->source_path, u->source_mtime, false)) | |
ab932a62 | 3317 | return true; |
ae7a7182 | 3318 | |
ab932a62 LP |
3319 | (void) unit_find_dropin_paths(u, &t); |
3320 | if (!strv_equal(u->dropin_paths, t)) | |
3321 | return true; | |
6d10d308 | 3322 | |
ba25d39e | 3323 | /* … any drop-ins that are masked are simply omitted from the list. */ |
ab932a62 | 3324 | STRV_FOREACH(path, u->dropin_paths) |
ba25d39e | 3325 | if (fragment_mtime_newer(*path, u->dropin_mtime, false)) |
ab932a62 | 3326 | return true; |
21b95806 | 3327 | |
ab932a62 | 3328 | return false; |
45fb0699 LP |
3329 | } |
3330 | ||
fdf20a31 | 3331 | void unit_reset_failed(Unit *u) { |
5632e374 LP |
3332 | assert(u); |
3333 | ||
fdf20a31 MM |
3334 | if (UNIT_VTABLE(u)->reset_failed) |
3335 | UNIT_VTABLE(u)->reset_failed(u); | |
6bf0f408 LP |
3336 | |
3337 | RATELIMIT_RESET(u->start_limit); | |
3338 | u->start_limit_hit = false; | |
5632e374 LP |
3339 | } |
3340 | ||
a7f241db LP |
3341 | Unit *unit_following(Unit *u) { |
3342 | assert(u); | |
3343 | ||
3344 | if (UNIT_VTABLE(u)->following) | |
3345 | return UNIT_VTABLE(u)->following(u); | |
3346 | ||
3347 | return NULL; | |
3348 | } | |
3349 | ||
31afa0a4 | 3350 | bool unit_stop_pending(Unit *u) { |
18ffdfda LP |
3351 | assert(u); |
3352 | ||
31afa0a4 LP |
3353 | /* This call does check the current state of the unit. It's |
3354 | * hence useful to be called from state change calls of the | |
3355 | * unit itself, where the state isn't updated yet. This is | |
3356 | * different from unit_inactive_or_pending() which checks both | |
3357 | * the current state and for a queued job. */ | |
18ffdfda | 3358 | |
31afa0a4 LP |
3359 | return u->job && u->job->type == JOB_STOP; |
3360 | } | |
3361 | ||
3362 | bool unit_inactive_or_pending(Unit *u) { | |
3363 | assert(u); | |
3364 | ||
3365 | /* Returns true if the unit is inactive or going down */ | |
18ffdfda | 3366 | |
d956ac29 LP |
3367 | if (UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))) |
3368 | return true; | |
3369 | ||
31afa0a4 | 3370 | if (unit_stop_pending(u)) |
18ffdfda LP |
3371 | return true; |
3372 | ||
3373 | return false; | |
3374 | } | |
3375 | ||
31afa0a4 | 3376 | bool unit_active_or_pending(Unit *u) { |
f976f3f6 LP |
3377 | assert(u); |
3378 | ||
f60c2665 | 3379 | /* Returns true if the unit is active or going up */ |
f976f3f6 LP |
3380 | |
3381 | if (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) | |
3382 | return true; | |
3383 | ||
ac155bb8 MS |
3384 | if (u->job && |
3385 | (u->job->type == JOB_START || | |
3386 | u->job->type == JOB_RELOAD_OR_START || | |
3387 | u->job->type == JOB_RESTART)) | |
f976f3f6 LP |
3388 | return true; |
3389 | ||
3390 | return false; | |
3391 | } | |
3392 | ||
718db961 | 3393 | int unit_kill(Unit *u, KillWho w, int signo, sd_bus_error *error) { |
8a0867d6 LP |
3394 | assert(u); |
3395 | assert(w >= 0 && w < _KILL_WHO_MAX); | |
6eb7c172 | 3396 | assert(SIGNAL_VALID(signo)); |
8a0867d6 | 3397 | |
8a0867d6 | 3398 | if (!UNIT_VTABLE(u)->kill) |
15411c0c | 3399 | return -EOPNOTSUPP; |
8a0867d6 | 3400 | |
c74f17d9 | 3401 | return UNIT_VTABLE(u)->kill(u, w, signo, error); |
8a0867d6 LP |
3402 | } |
3403 | ||
82659fd7 LP |
3404 | static Set *unit_pid_set(pid_t main_pid, pid_t control_pid) { |
3405 | Set *pid_set; | |
3406 | int r; | |
3407 | ||
d5099efc | 3408 | pid_set = set_new(NULL); |
82659fd7 LP |
3409 | if (!pid_set) |
3410 | return NULL; | |
3411 | ||
3412 | /* Exclude the main/control pids from being killed via the cgroup */ | |
3413 | if (main_pid > 0) { | |
fea72cc0 | 3414 | r = set_put(pid_set, PID_TO_PTR(main_pid)); |
82659fd7 LP |
3415 | if (r < 0) |
3416 | goto fail; | |
3417 | } | |
3418 | ||
3419 | if (control_pid > 0) { | |
fea72cc0 | 3420 | r = set_put(pid_set, PID_TO_PTR(control_pid)); |
82659fd7 LP |
3421 | if (r < 0) |
3422 | goto fail; | |
3423 | } | |
3424 | ||
3425 | return pid_set; | |
3426 | ||
3427 | fail: | |
3428 | set_free(pid_set); | |
3429 | return NULL; | |
3430 | } | |
3431 | ||
d91c34f2 LP |
3432 | int unit_kill_common( |
3433 | Unit *u, | |
3434 | KillWho who, | |
3435 | int signo, | |
3436 | pid_t main_pid, | |
3437 | pid_t control_pid, | |
718db961 | 3438 | sd_bus_error *error) { |
d91c34f2 | 3439 | |
814cc562 | 3440 | int r = 0; |
ac5e3a50 | 3441 | bool killed = false; |
814cc562 | 3442 | |
ac5e3a50 | 3443 | if (IN_SET(who, KILL_MAIN, KILL_MAIN_FAIL)) { |
814cc562 | 3444 | if (main_pid < 0) |
7358dc02 | 3445 | return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_PROCESS, "%s units have no main processes", unit_type_to_string(u->type)); |
52f448c3 | 3446 | else if (main_pid == 0) |
7358dc02 | 3447 | return sd_bus_error_set_const(error, BUS_ERROR_NO_SUCH_PROCESS, "No main process to kill"); |
814cc562 MS |
3448 | } |
3449 | ||
ac5e3a50 | 3450 | if (IN_SET(who, KILL_CONTROL, KILL_CONTROL_FAIL)) { |
814cc562 | 3451 | if (control_pid < 0) |
7358dc02 | 3452 | return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_PROCESS, "%s units have no control processes", unit_type_to_string(u->type)); |
52f448c3 | 3453 | else if (control_pid == 0) |
7358dc02 | 3454 | return sd_bus_error_set_const(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill"); |
814cc562 MS |
3455 | } |
3456 | ||
ac5e3a50 JS |
3457 | if (IN_SET(who, KILL_CONTROL, KILL_CONTROL_FAIL, KILL_ALL, KILL_ALL_FAIL)) |
3458 | if (control_pid > 0) { | |
814cc562 MS |
3459 | if (kill(control_pid, signo) < 0) |
3460 | r = -errno; | |
ac5e3a50 JS |
3461 | else |
3462 | killed = true; | |
3463 | } | |
814cc562 | 3464 | |
ac5e3a50 JS |
3465 | if (IN_SET(who, KILL_MAIN, KILL_MAIN_FAIL, KILL_ALL, KILL_ALL_FAIL)) |
3466 | if (main_pid > 0) { | |
814cc562 MS |
3467 | if (kill(main_pid, signo) < 0) |
3468 | r = -errno; | |
ac5e3a50 JS |
3469 | else |
3470 | killed = true; | |
3471 | } | |
814cc562 | 3472 | |
ac5e3a50 | 3473 | if (IN_SET(who, KILL_ALL, KILL_ALL_FAIL) && u->cgroup_path) { |
814cc562 MS |
3474 | _cleanup_set_free_ Set *pid_set = NULL; |
3475 | int q; | |
3476 | ||
82659fd7 LP |
3477 | /* Exclude the main/control pids from being killed via the cgroup */ |
3478 | pid_set = unit_pid_set(main_pid, control_pid); | |
814cc562 MS |
3479 | if (!pid_set) |
3480 | return -ENOMEM; | |
3481 | ||
1d98fef1 | 3482 | q = cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, signo, 0, pid_set, NULL, NULL); |
814cc562 MS |
3483 | if (q < 0 && q != -EAGAIN && q != -ESRCH && q != -ENOENT) |
3484 | r = q; | |
ac5e3a50 JS |
3485 | else |
3486 | killed = true; | |
814cc562 MS |
3487 | } |
3488 | ||
201f0c91 | 3489 | if (r == 0 && !killed && IN_SET(who, KILL_ALL_FAIL, KILL_CONTROL_FAIL)) |
ac5e3a50 JS |
3490 | return -ESRCH; |
3491 | ||
814cc562 MS |
3492 | return r; |
3493 | } | |
3494 | ||
6210e7fc LP |
3495 | int unit_following_set(Unit *u, Set **s) { |
3496 | assert(u); | |
3497 | assert(s); | |
3498 | ||
3499 | if (UNIT_VTABLE(u)->following_set) | |
3500 | return UNIT_VTABLE(u)->following_set(u, s); | |
3501 | ||
3502 | *s = NULL; | |
3503 | return 0; | |
3504 | } | |
3505 | ||
a4375746 | 3506 | UnitFileState unit_get_unit_file_state(Unit *u) { |
0ec0deaa LP |
3507 | int r; |
3508 | ||
a4375746 LP |
3509 | assert(u); |
3510 | ||
0ec0deaa LP |
3511 | if (u->unit_file_state < 0 && u->fragment_path) { |
3512 | r = unit_file_get_state( | |
463d0d15 | 3513 | u->manager->unit_file_scope, |
0ec0deaa LP |
3514 | NULL, |
3515 | basename(u->fragment_path), | |
3516 | &u->unit_file_state); | |
3517 | if (r < 0) | |
3518 | u->unit_file_state = UNIT_FILE_BAD; | |
3519 | } | |
a4375746 | 3520 | |
ac155bb8 | 3521 | return u->unit_file_state; |
a4375746 LP |
3522 | } |
3523 | ||
d2dc52db LP |
3524 | int unit_get_unit_file_preset(Unit *u) { |
3525 | assert(u); | |
3526 | ||
3527 | if (u->unit_file_preset < 0 && u->fragment_path) | |
3528 | u->unit_file_preset = unit_file_query_preset( | |
463d0d15 | 3529 | u->manager->unit_file_scope, |
0ec0deaa LP |
3530 | NULL, |
3531 | basename(u->fragment_path)); | |
d2dc52db LP |
3532 | |
3533 | return u->unit_file_preset; | |
3534 | } | |
3535 | ||
57020a3a LP |
3536 | Unit* unit_ref_set(UnitRef *ref, Unit *u) { |
3537 | assert(ref); | |
3538 | assert(u); | |
3539 | ||
3540 | if (ref->unit) | |
3541 | unit_ref_unset(ref); | |
3542 | ||
3543 | ref->unit = u; | |
71fda00f | 3544 | LIST_PREPEND(refs, u->refs, ref); |
57020a3a LP |
3545 | return u; |
3546 | } | |
3547 | ||
3548 | void unit_ref_unset(UnitRef *ref) { | |
3549 | assert(ref); | |
3550 | ||
3551 | if (!ref->unit) | |
3552 | return; | |
3553 | ||
b75102e5 LP |
3554 | /* We are about to drop a reference to the unit, make sure the garbage collection has a look at it as it might |
3555 | * be unreferenced now. */ | |
3556 | unit_add_to_gc_queue(ref->unit); | |
3557 | ||
71fda00f | 3558 | LIST_REMOVE(refs, ref->unit->refs, ref); |
57020a3a LP |
3559 | ref->unit = NULL; |
3560 | } | |
3561 | ||
29206d46 LP |
3562 | static int user_from_unit_name(Unit *u, char **ret) { |
3563 | ||
3564 | static const uint8_t hash_key[] = { | |
3565 | 0x58, 0x1a, 0xaf, 0xe6, 0x28, 0x58, 0x4e, 0x96, | |
3566 | 0xb4, 0x4e, 0xf5, 0x3b, 0x8c, 0x92, 0x07, 0xec | |
3567 | }; | |
3568 | ||
3569 | _cleanup_free_ char *n = NULL; | |
3570 | int r; | |
3571 | ||
3572 | r = unit_name_to_prefix(u->id, &n); | |
3573 | if (r < 0) | |
3574 | return r; | |
3575 | ||
3576 | if (valid_user_group_name(n)) { | |
3577 | *ret = n; | |
3578 | n = NULL; | |
3579 | return 0; | |
3580 | } | |
3581 | ||
3582 | /* If we can't use the unit name as a user name, then let's hash it and use that */ | |
3583 | if (asprintf(ret, "_du%016" PRIx64, siphash24(n, strlen(n), hash_key)) < 0) | |
3584 | return -ENOMEM; | |
3585 | ||
3586 | return 0; | |
3587 | } | |
3588 | ||
598459ce LP |
3589 | int unit_patch_contexts(Unit *u) { |
3590 | CGroupContext *cc; | |
3591 | ExecContext *ec; | |
cba6e062 LP |
3592 | unsigned i; |
3593 | int r; | |
3594 | ||
e06c73cc | 3595 | assert(u); |
e06c73cc | 3596 | |
598459ce LP |
3597 | /* Patch in the manager defaults into the exec and cgroup |
3598 | * contexts, _after_ the rest of the settings have been | |
3599 | * initialized */ | |
085afe36 | 3600 | |
598459ce LP |
3601 | ec = unit_get_exec_context(u); |
3602 | if (ec) { | |
3603 | /* This only copies in the ones that need memory */ | |
3604 | for (i = 0; i < _RLIMIT_MAX; i++) | |
3605 | if (u->manager->rlimit[i] && !ec->rlimit[i]) { | |
3606 | ec->rlimit[i] = newdup(struct rlimit, u->manager->rlimit[i], 1); | |
3607 | if (!ec->rlimit[i]) | |
3608 | return -ENOMEM; | |
3609 | } | |
3610 | ||
463d0d15 | 3611 | if (MANAGER_IS_USER(u->manager) && |
598459ce LP |
3612 | !ec->working_directory) { |
3613 | ||
3614 | r = get_home_dir(&ec->working_directory); | |
3615 | if (r < 0) | |
3616 | return r; | |
4c08c824 LP |
3617 | |
3618 | /* Allow user services to run, even if the | |
3619 | * home directory is missing */ | |
3620 | ec->working_directory_missing_ok = true; | |
cba6e062 LP |
3621 | } |
3622 | ||
598459ce | 3623 | if (ec->private_devices) |
2cd0a735 | 3624 | ec->capability_bounding_set &= ~((UINT64_C(1) << CAP_MKNOD) | (UINT64_C(1) << CAP_SYS_RAWIO)); |
502d704e DH |
3625 | |
3626 | if (ec->protect_kernel_modules) | |
3627 | ec->capability_bounding_set &= ~(UINT64_C(1) << CAP_SYS_MODULE); | |
29206d46 LP |
3628 | |
3629 | if (ec->dynamic_user) { | |
3630 | if (!ec->user) { | |
3631 | r = user_from_unit_name(u, &ec->user); | |
3632 | if (r < 0) | |
3633 | return r; | |
3634 | } | |
3635 | ||
3636 | if (!ec->group) { | |
3637 | ec->group = strdup(ec->user); | |
3638 | if (!ec->group) | |
3639 | return -ENOMEM; | |
3640 | } | |
3641 | ||
63bb64a0 LP |
3642 | /* If the dynamic user option is on, let's make sure that the unit can't leave its UID/GID |
3643 | * around in the file system or on IPC objects. Hence enforce a strict sandbox. */ | |
3644 | ||
29206d46 | 3645 | ec->private_tmp = true; |
00d9ef85 | 3646 | ec->remove_ipc = true; |
63bb64a0 LP |
3647 | ec->protect_system = PROTECT_SYSTEM_STRICT; |
3648 | if (ec->protect_home == PROTECT_HOME_NO) | |
3649 | ec->protect_home = PROTECT_HOME_READ_ONLY; | |
29206d46 | 3650 | } |
cba6e062 LP |
3651 | } |
3652 | ||
598459ce LP |
3653 | cc = unit_get_cgroup_context(u); |
3654 | if (cc) { | |
f513e420 | 3655 | |
598459ce LP |
3656 | if (ec && |
3657 | ec->private_devices && | |
3658 | cc->device_policy == CGROUP_AUTO) | |
3659 | cc->device_policy = CGROUP_CLOSED; | |
3660 | } | |
f1660f96 | 3661 | |
cba6e062 | 3662 | return 0; |
e06c73cc LP |
3663 | } |
3664 | ||
3ef63c31 LP |
3665 | ExecContext *unit_get_exec_context(Unit *u) { |
3666 | size_t offset; | |
3667 | assert(u); | |
3668 | ||
598459ce LP |
3669 | if (u->type < 0) |
3670 | return NULL; | |
3671 | ||
3ef63c31 LP |
3672 | offset = UNIT_VTABLE(u)->exec_context_offset; |
3673 | if (offset <= 0) | |
3674 | return NULL; | |
3675 | ||
3676 | return (ExecContext*) ((uint8_t*) u + offset); | |
3677 | } | |
3678 | ||
718db961 LP |
3679 | KillContext *unit_get_kill_context(Unit *u) { |
3680 | size_t offset; | |
3681 | assert(u); | |
3682 | ||
598459ce LP |
3683 | if (u->type < 0) |
3684 | return NULL; | |
3685 | ||
718db961 LP |
3686 | offset = UNIT_VTABLE(u)->kill_context_offset; |
3687 | if (offset <= 0) | |
3688 | return NULL; | |
3689 | ||
3690 | return (KillContext*) ((uint8_t*) u + offset); | |
3691 | } | |
3692 | ||
4ad49000 LP |
3693 | CGroupContext *unit_get_cgroup_context(Unit *u) { |
3694 | size_t offset; | |
3695 | ||
598459ce LP |
3696 | if (u->type < 0) |
3697 | return NULL; | |
3698 | ||
4ad49000 LP |
3699 | offset = UNIT_VTABLE(u)->cgroup_context_offset; |
3700 | if (offset <= 0) | |
3701 | return NULL; | |
3702 | ||
3703 | return (CGroupContext*) ((uint8_t*) u + offset); | |
3704 | } | |
3705 | ||
613b411c LP |
3706 | ExecRuntime *unit_get_exec_runtime(Unit *u) { |
3707 | size_t offset; | |
3708 | ||
598459ce LP |
3709 | if (u->type < 0) |
3710 | return NULL; | |
3711 | ||
613b411c LP |
3712 | offset = UNIT_VTABLE(u)->exec_runtime_offset; |
3713 | if (offset <= 0) | |
3714 | return NULL; | |
3715 | ||
3716 | return *(ExecRuntime**) ((uint8_t*) u + offset); | |
3717 | } | |
3718 | ||
39591351 | 3719 | static const char* unit_drop_in_dir(Unit *u, UnitSetPropertiesMode mode) { |
3f5e8115 LP |
3720 | assert(u); |
3721 | ||
4f4afc88 LP |
3722 | if (!IN_SET(mode, UNIT_RUNTIME, UNIT_PERSISTENT)) |
3723 | return NULL; | |
3724 | ||
39591351 LP |
3725 | if (u->transient) /* Redirect drop-ins for transient units always into the transient directory. */ |
3726 | return u->manager->lookup_paths.transient; | |
26d04f86 | 3727 | |
39591351 | 3728 | if (mode == UNIT_RUNTIME) |
4f4afc88 | 3729 | return u->manager->lookup_paths.runtime_control; |
3f5e8115 | 3730 | |
39591351 | 3731 | if (mode == UNIT_PERSISTENT) |
4f4afc88 | 3732 | return u->manager->lookup_paths.persistent_control; |
26d04f86 | 3733 | |
39591351 | 3734 | return NULL; |
71645aca LP |
3735 | } |
3736 | ||
8e2af478 | 3737 | int unit_write_drop_in(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data) { |
39591351 | 3738 | _cleanup_free_ char *p = NULL, *q = NULL; |
2a9a6f8a | 3739 | const char *dir, *wrapped; |
26d04f86 | 3740 | int r; |
71645aca LP |
3741 | |
3742 | assert(u); | |
3743 | ||
4f4afc88 LP |
3744 | if (u->transient_file) { |
3745 | /* When this is a transient unit file in creation, then let's not create a new drop-in but instead | |
3746 | * write to the transient unit file. */ | |
3747 | fputs(data, u->transient_file); | |
fc40065b | 3748 | fputc('\n', u->transient_file); |
4f4afc88 LP |
3749 | return 0; |
3750 | } | |
3751 | ||
6d235724 | 3752 | if (!IN_SET(mode, UNIT_PERSISTENT, UNIT_RUNTIME)) |
8e2af478 LP |
3753 | return 0; |
3754 | ||
39591351 LP |
3755 | dir = unit_drop_in_dir(u, mode); |
3756 | if (!dir) | |
3757 | return -EINVAL; | |
71645aca | 3758 | |
2a9a6f8a | 3759 | wrapped = strjoina("# This is a drop-in unit file extension, created via \"systemctl set-property\"\n" |
3f71dec5 | 3760 | "# or an equivalent operation. Do not edit.\n", |
2a9a6f8a ZJS |
3761 | data, |
3762 | "\n"); | |
e20b2a86 | 3763 | |
815b09d3 | 3764 | r = drop_in_file(dir, u->id, 50, name, &p, &q); |
adb76a70 WC |
3765 | if (r < 0) |
3766 | return r; | |
3767 | ||
815b09d3 | 3768 | (void) mkdir_p(p, 0755); |
2a9a6f8a | 3769 | r = write_string_file_atomic_label(q, wrapped); |
adb76a70 WC |
3770 | if (r < 0) |
3771 | return r; | |
3772 | ||
815b09d3 | 3773 | r = strv_push(&u->dropin_paths, q); |
adb76a70 WC |
3774 | if (r < 0) |
3775 | return r; | |
815b09d3 | 3776 | q = NULL; |
adb76a70 | 3777 | |
adb76a70 WC |
3778 | strv_uniq(u->dropin_paths); |
3779 | ||
3780 | u->dropin_mtime = now(CLOCK_REALTIME); | |
3781 | ||
3782 | return 0; | |
26d04f86 | 3783 | } |
71645aca | 3784 | |
b9ec9359 LP |
3785 | int unit_write_drop_in_format(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *format, ...) { |
3786 | _cleanup_free_ char *p = NULL; | |
3787 | va_list ap; | |
3788 | int r; | |
3789 | ||
3790 | assert(u); | |
3791 | assert(name); | |
3792 | assert(format); | |
3793 | ||
6d235724 | 3794 | if (!IN_SET(mode, UNIT_PERSISTENT, UNIT_RUNTIME)) |
b9ec9359 LP |
3795 | return 0; |
3796 | ||
3797 | va_start(ap, format); | |
3798 | r = vasprintf(&p, format, ap); | |
3799 | va_end(ap); | |
3800 | ||
3801 | if (r < 0) | |
3802 | return -ENOMEM; | |
3803 | ||
3804 | return unit_write_drop_in(u, mode, name, p); | |
3805 | } | |
3806 | ||
3807 | int unit_write_drop_in_private(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data) { | |
39591351 | 3808 | const char *ndata; |
b42defe3 LP |
3809 | |
3810 | assert(u); | |
3811 | assert(name); | |
3812 | assert(data); | |
3813 | ||
3814 | if (!UNIT_VTABLE(u)->private_section) | |
3815 | return -EINVAL; | |
3816 | ||
6d235724 | 3817 | if (!IN_SET(mode, UNIT_PERSISTENT, UNIT_RUNTIME)) |
b9ec9359 LP |
3818 | return 0; |
3819 | ||
81d62103 | 3820 | ndata = strjoina("[", UNIT_VTABLE(u)->private_section, "]\n", data); |
b42defe3 LP |
3821 | |
3822 | return unit_write_drop_in(u, mode, name, ndata); | |
3823 | } | |
3824 | ||
b9ec9359 LP |
3825 | int unit_write_drop_in_private_format(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *format, ...) { |
3826 | _cleanup_free_ char *p = NULL; | |
3827 | va_list ap; | |
3828 | int r; | |
3829 | ||
3830 | assert(u); | |
3831 | assert(name); | |
3832 | assert(format); | |
3833 | ||
6d235724 | 3834 | if (!IN_SET(mode, UNIT_PERSISTENT, UNIT_RUNTIME)) |
b9ec9359 LP |
3835 | return 0; |
3836 | ||
3837 | va_start(ap, format); | |
3838 | r = vasprintf(&p, format, ap); | |
3839 | va_end(ap); | |
3840 | ||
3841 | if (r < 0) | |
3842 | return -ENOMEM; | |
3843 | ||
3844 | return unit_write_drop_in_private(u, mode, name, p); | |
3845 | } | |
71645aca | 3846 | |
c2756a68 | 3847 | int unit_make_transient(Unit *u) { |
4f4afc88 LP |
3848 | FILE *f; |
3849 | char *path; | |
3850 | ||
c2756a68 LP |
3851 | assert(u); |
3852 | ||
3f5e8115 LP |
3853 | if (!UNIT_VTABLE(u)->can_transient) |
3854 | return -EOPNOTSUPP; | |
3855 | ||
605405c6 | 3856 | path = strjoin(u->manager->lookup_paths.transient, "/", u->id); |
4f4afc88 LP |
3857 | if (!path) |
3858 | return -ENOMEM; | |
3859 | ||
3860 | /* Let's open the file we'll write the transient settings into. This file is kept open as long as we are | |
3861 | * creating the transient, and is closed in unit_load(), as soon as we start loading the file. */ | |
3862 | ||
78e334b5 | 3863 | RUN_WITH_UMASK(0022) { |
4f4afc88 | 3864 | f = fopen(path, "we"); |
78e334b5 ZJS |
3865 | if (!f) { |
3866 | free(path); | |
3867 | return -errno; | |
3868 | } | |
4f4afc88 LP |
3869 | } |
3870 | ||
3871 | if (u->transient_file) | |
3872 | fclose(u->transient_file); | |
3873 | u->transient_file = f; | |
3874 | ||
3875 | free(u->fragment_path); | |
3876 | u->fragment_path = path; | |
7c65093a | 3877 | |
7c65093a LP |
3878 | u->source_path = mfree(u->source_path); |
3879 | u->dropin_paths = strv_free(u->dropin_paths); | |
3880 | u->fragment_mtime = u->source_mtime = u->dropin_mtime = 0; | |
3881 | ||
4f4afc88 LP |
3882 | u->load_state = UNIT_STUB; |
3883 | u->load_error = 0; | |
3884 | u->transient = true; | |
3885 | ||
7c65093a LP |
3886 | unit_add_to_dbus_queue(u); |
3887 | unit_add_to_gc_queue(u); | |
c2756a68 | 3888 | |
4f4afc88 LP |
3889 | fputs("# This is a transient unit file, created programmatically via the systemd API. Do not edit.\n", |
3890 | u->transient_file); | |
3891 | ||
3f5e8115 | 3892 | return 0; |
c2756a68 LP |
3893 | } |
3894 | ||
1d98fef1 LP |
3895 | static void log_kill(pid_t pid, int sig, void *userdata) { |
3896 | _cleanup_free_ char *comm = NULL; | |
3897 | ||
3898 | (void) get_process_comm(pid, &comm); | |
3899 | ||
3900 | /* Don't log about processes marked with brackets, under the assumption that these are temporary processes | |
3901 | only, like for example systemd's own PAM stub process. */ | |
3902 | if (comm && comm[0] == '(') | |
3903 | return; | |
3904 | ||
3905 | log_unit_notice(userdata, | |
3906 | "Killing process " PID_FMT " (%s) with signal SIG%s.", | |
3907 | pid, | |
3908 | strna(comm), | |
3909 | signal_to_string(sig)); | |
3910 | } | |
3911 | ||
3912 | static int operation_to_signal(KillContext *c, KillOperation k) { | |
3913 | assert(c); | |
3914 | ||
3915 | switch (k) { | |
3916 | ||
3917 | case KILL_TERMINATE: | |
3918 | case KILL_TERMINATE_AND_LOG: | |
3919 | return c->kill_signal; | |
3920 | ||
3921 | case KILL_KILL: | |
3922 | return SIGKILL; | |
3923 | ||
3924 | case KILL_ABORT: | |
3925 | return SIGABRT; | |
3926 | ||
3927 | default: | |
3928 | assert_not_reached("KillOperation unknown"); | |
3929 | } | |
3930 | } | |
3931 | ||
cd2086fe LP |
3932 | int unit_kill_context( |
3933 | Unit *u, | |
3934 | KillContext *c, | |
db2cb23b | 3935 | KillOperation k, |
cd2086fe LP |
3936 | pid_t main_pid, |
3937 | pid_t control_pid, | |
3938 | bool main_pid_alien) { | |
3939 | ||
1d98fef1 | 3940 | bool wait_for_exit = false, send_sighup; |
59ec09a8 | 3941 | cg_kill_log_func_t log_func = NULL; |
b821a397 | 3942 | int sig, r; |
cd2086fe LP |
3943 | |
3944 | assert(u); | |
3945 | assert(c); | |
3946 | ||
59ec09a8 ZJS |
3947 | /* Kill the processes belonging to this unit, in preparation for shutting the unit down. |
3948 | * Returns > 0 if we killed something worth waiting for, 0 otherwise. */ | |
1d98fef1 | 3949 | |
cd2086fe LP |
3950 | if (c->kill_mode == KILL_NONE) |
3951 | return 0; | |
3952 | ||
1d98fef1 LP |
3953 | sig = operation_to_signal(c, k); |
3954 | ||
3955 | send_sighup = | |
3956 | c->send_sighup && | |
3957 | IN_SET(k, KILL_TERMINATE, KILL_TERMINATE_AND_LOG) && | |
3958 | sig != SIGHUP; | |
3959 | ||
59ec09a8 ZJS |
3960 | if (k != KILL_TERMINATE || IN_SET(sig, SIGKILL, SIGABRT)) |
3961 | log_func = log_kill; | |
cd2086fe LP |
3962 | |
3963 | if (main_pid > 0) { | |
1d98fef1 LP |
3964 | if (log_func) |
3965 | log_func(main_pid, sig, u); | |
cd2086fe | 3966 | |
1d98fef1 | 3967 | r = kill_and_sigcont(main_pid, sig); |
cd2086fe LP |
3968 | if (r < 0 && r != -ESRCH) { |
3969 | _cleanup_free_ char *comm = NULL; | |
1d98fef1 | 3970 | (void) get_process_comm(main_pid, &comm); |
cd2086fe | 3971 | |
b821a397 | 3972 | log_unit_warning_errno(u, r, "Failed to kill main process " PID_FMT " (%s), ignoring: %m", main_pid, strna(comm)); |
82659fd7 | 3973 | } else { |
bc6aed7b LP |
3974 | if (!main_pid_alien) |
3975 | wait_for_exit = true; | |
82659fd7 | 3976 | |
1d98fef1 | 3977 | if (r != -ESRCH && send_sighup) |
d0667321 | 3978 | (void) kill(main_pid, SIGHUP); |
82659fd7 | 3979 | } |
cd2086fe LP |
3980 | } |
3981 | ||
3982 | if (control_pid > 0) { | |
1d98fef1 LP |
3983 | if (log_func) |
3984 | log_func(control_pid, sig, u); | |
cd2086fe | 3985 | |
1d98fef1 | 3986 | r = kill_and_sigcont(control_pid, sig); |
cd2086fe LP |
3987 | if (r < 0 && r != -ESRCH) { |
3988 | _cleanup_free_ char *comm = NULL; | |
1d98fef1 | 3989 | (void) get_process_comm(control_pid, &comm); |
cd2086fe | 3990 | |
b821a397 | 3991 | log_unit_warning_errno(u, r, "Failed to kill control process " PID_FMT " (%s), ignoring: %m", control_pid, strna(comm)); |
82659fd7 | 3992 | } else { |
cd2086fe | 3993 | wait_for_exit = true; |
82659fd7 | 3994 | |
1d98fef1 | 3995 | if (r != -ESRCH && send_sighup) |
d0667321 | 3996 | (void) kill(control_pid, SIGHUP); |
82659fd7 | 3997 | } |
cd2086fe LP |
3998 | } |
3999 | ||
b821a397 LP |
4000 | if (u->cgroup_path && |
4001 | (c->kill_mode == KILL_CONTROL_GROUP || (c->kill_mode == KILL_MIXED && k == KILL_KILL))) { | |
cd2086fe LP |
4002 | _cleanup_set_free_ Set *pid_set = NULL; |
4003 | ||
82659fd7 LP |
4004 | /* Exclude the main/control pids from being killed via the cgroup */ |
4005 | pid_set = unit_pid_set(main_pid, control_pid); | |
cd2086fe LP |
4006 | if (!pid_set) |
4007 | return -ENOMEM; | |
4008 | ||
1d98fef1 LP |
4009 | r = cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, |
4010 | sig, | |
4011 | CGROUP_SIGCONT|CGROUP_IGNORE_SELF, | |
4012 | pid_set, | |
4013 | log_func, u); | |
cd2086fe LP |
4014 | if (r < 0) { |
4015 | if (r != -EAGAIN && r != -ESRCH && r != -ENOENT) | |
b821a397 LP |
4016 | log_unit_warning_errno(u, r, "Failed to kill control group %s, ignoring: %m", u->cgroup_path); |
4017 | ||
82659fd7 | 4018 | } else if (r > 0) { |
bc6aed7b | 4019 | |
efdb0237 LP |
4020 | /* FIXME: For now, on the legacy hierarchy, we |
4021 | * will not wait for the cgroup members to die | |
4022 | * if we are running in a container or if this | |
4023 | * is a delegation unit, simply because cgroup | |
4024 | * notification is unreliable in these | |
4025 | * cases. It doesn't work at all in | |
4026 | * containers, and outside of containers it | |
4027 | * can be confused easily by left-over | |
ccddd104 | 4028 | * directories in the cgroup — which however |
efdb0237 LP |
4029 | * should not exist in non-delegated units. On |
4030 | * the unified hierarchy that's different, | |
4031 | * there we get proper events. Hence rely on | |
13e785f7 | 4032 | * them. */ |
efdb0237 | 4033 | |
c22800e4 | 4034 | if (cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER) > 0 || |
415fc41c | 4035 | (detect_container() == 0 && !unit_cgroup_delegate(u))) |
e9db43d5 | 4036 | wait_for_exit = true; |
58ea275a | 4037 | |
1d98fef1 | 4038 | if (send_sighup) { |
82659fd7 LP |
4039 | set_free(pid_set); |
4040 | ||
4041 | pid_set = unit_pid_set(main_pid, control_pid); | |
4042 | if (!pid_set) | |
4043 | return -ENOMEM; | |
4044 | ||
1d98fef1 LP |
4045 | cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, |
4046 | SIGHUP, | |
4047 | CGROUP_IGNORE_SELF, | |
4048 | pid_set, | |
4049 | NULL, NULL); | |
82659fd7 LP |
4050 | } |
4051 | } | |
cd2086fe LP |
4052 | } |
4053 | ||
4054 | return wait_for_exit; | |
4055 | } | |
4056 | ||
a57f7e2c LP |
4057 | int unit_require_mounts_for(Unit *u, const char *path) { |
4058 | char prefix[strlen(path) + 1], *p; | |
4059 | int r; | |
4060 | ||
4061 | assert(u); | |
4062 | assert(path); | |
4063 | ||
4064 | /* Registers a unit for requiring a certain path and all its | |
4065 | * prefixes. We keep a simple array of these paths in the | |
4066 | * unit, since its usually short. However, we build a prefix | |
4067 | * table for all possible prefixes so that new appearing mount | |
4068 | * units can easily determine which units to make themselves a | |
4069 | * dependency of. */ | |
4070 | ||
70b64bd3 ZJS |
4071 | if (!path_is_absolute(path)) |
4072 | return -EINVAL; | |
4073 | ||
a57f7e2c LP |
4074 | p = strdup(path); |
4075 | if (!p) | |
4076 | return -ENOMEM; | |
4077 | ||
4078 | path_kill_slashes(p); | |
4079 | ||
a57f7e2c LP |
4080 | if (!path_is_safe(p)) { |
4081 | free(p); | |
4082 | return -EPERM; | |
4083 | } | |
4084 | ||
4085 | if (strv_contains(u->requires_mounts_for, p)) { | |
4086 | free(p); | |
4087 | return 0; | |
4088 | } | |
4089 | ||
6e18964d ZJS |
4090 | r = strv_consume(&u->requires_mounts_for, p); |
4091 | if (r < 0) | |
a57f7e2c | 4092 | return r; |
a57f7e2c LP |
4093 | |
4094 | PATH_FOREACH_PREFIX_MORE(prefix, p) { | |
4095 | Set *x; | |
4096 | ||
4097 | x = hashmap_get(u->manager->units_requiring_mounts_for, prefix); | |
4098 | if (!x) { | |
4099 | char *q; | |
4100 | ||
742f41ad LP |
4101 | r = hashmap_ensure_allocated(&u->manager->units_requiring_mounts_for, &string_hash_ops); |
4102 | if (r < 0) | |
4103 | return r; | |
a57f7e2c LP |
4104 | |
4105 | q = strdup(prefix); | |
4106 | if (!q) | |
4107 | return -ENOMEM; | |
4108 | ||
d5099efc | 4109 | x = set_new(NULL); |
a57f7e2c LP |
4110 | if (!x) { |
4111 | free(q); | |
4112 | return -ENOMEM; | |
4113 | } | |
4114 | ||
4115 | r = hashmap_put(u->manager->units_requiring_mounts_for, q, x); | |
4116 | if (r < 0) { | |
4117 | free(q); | |
4118 | set_free(x); | |
4119 | return r; | |
4120 | } | |
4121 | } | |
4122 | ||
4123 | r = set_put(x, u); | |
4124 | if (r < 0) | |
4125 | return r; | |
4126 | } | |
4127 | ||
4128 | return 0; | |
4129 | } | |
4130 | ||
613b411c LP |
4131 | int unit_setup_exec_runtime(Unit *u) { |
4132 | ExecRuntime **rt; | |
4133 | size_t offset; | |
4134 | Iterator i; | |
4135 | Unit *other; | |
4136 | ||
4137 | offset = UNIT_VTABLE(u)->exec_runtime_offset; | |
4138 | assert(offset > 0); | |
4139 | ||
06b643e7 | 4140 | /* Check if there already is an ExecRuntime for this unit? */ |
613b411c LP |
4141 | rt = (ExecRuntime**) ((uint8_t*) u + offset); |
4142 | if (*rt) | |
4143 | return 0; | |
4144 | ||
4145 | /* Try to get it from somebody else */ | |
4146 | SET_FOREACH(other, u->dependencies[UNIT_JOINS_NAMESPACE_OF], i) { | |
4147 | ||
4148 | *rt = unit_get_exec_runtime(other); | |
4149 | if (*rt) { | |
4150 | exec_runtime_ref(*rt); | |
4151 | return 0; | |
4152 | } | |
4153 | } | |
4154 | ||
4155 | return exec_runtime_make(rt, unit_get_exec_context(u), u->id); | |
4156 | } | |
4157 | ||
29206d46 LP |
4158 | int unit_setup_dynamic_creds(Unit *u) { |
4159 | ExecContext *ec; | |
4160 | DynamicCreds *dcreds; | |
4161 | size_t offset; | |
4162 | ||
4163 | assert(u); | |
4164 | ||
4165 | offset = UNIT_VTABLE(u)->dynamic_creds_offset; | |
4166 | assert(offset > 0); | |
4167 | dcreds = (DynamicCreds*) ((uint8_t*) u + offset); | |
4168 | ||
4169 | ec = unit_get_exec_context(u); | |
4170 | assert(ec); | |
4171 | ||
4172 | if (!ec->dynamic_user) | |
4173 | return 0; | |
4174 | ||
4175 | return dynamic_creds_acquire(dcreds, u->manager, ec->user, ec->group); | |
4176 | } | |
4177 | ||
1c2e9646 LP |
4178 | bool unit_type_supported(UnitType t) { |
4179 | if (_unlikely_(t < 0)) | |
4180 | return false; | |
4181 | if (_unlikely_(t >= _UNIT_TYPE_MAX)) | |
4182 | return false; | |
4183 | ||
4184 | if (!unit_vtable[t]->supported) | |
4185 | return true; | |
4186 | ||
4187 | return unit_vtable[t]->supported(); | |
4188 | } | |
4189 | ||
8b4305c7 LP |
4190 | void unit_warn_if_dir_nonempty(Unit *u, const char* where) { |
4191 | int r; | |
4192 | ||
4193 | assert(u); | |
4194 | assert(where); | |
4195 | ||
4196 | r = dir_is_empty(where); | |
4197 | if (r > 0) | |
4198 | return; | |
4199 | if (r < 0) { | |
4200 | log_unit_warning_errno(u, r, "Failed to check directory %s: %m", where); | |
4201 | return; | |
4202 | } | |
4203 | ||
4204 | log_struct(LOG_NOTICE, | |
2b044526 | 4205 | "MESSAGE_ID=" SD_MESSAGE_OVERMOUNTING_STR, |
8b4305c7 LP |
4206 | LOG_UNIT_ID(u), |
4207 | LOG_UNIT_MESSAGE(u, "Directory %s to mount over is not empty, mounting anyway.", where), | |
4208 | "WHERE=%s", where, | |
4209 | NULL); | |
4210 | } | |
4211 | ||
4212 | int unit_fail_if_symlink(Unit *u, const char* where) { | |
4213 | int r; | |
4214 | ||
4215 | assert(u); | |
4216 | assert(where); | |
4217 | ||
4218 | r = is_symlink(where); | |
4219 | if (r < 0) { | |
4220 | log_unit_debug_errno(u, r, "Failed to check symlink %s, ignoring: %m", where); | |
4221 | return 0; | |
4222 | } | |
4223 | if (r == 0) | |
4224 | return 0; | |
4225 | ||
4226 | log_struct(LOG_ERR, | |
2b044526 | 4227 | "MESSAGE_ID=" SD_MESSAGE_OVERMOUNTING_STR, |
8b4305c7 LP |
4228 | LOG_UNIT_ID(u), |
4229 | LOG_UNIT_MESSAGE(u, "Mount on symlink %s not allowed.", where), | |
4230 | "WHERE=%s", where, | |
4231 | NULL); | |
4232 | ||
4233 | return -ELOOP; | |
4234 | } | |
0f13f3bd LP |
4235 | |
4236 | bool unit_is_pristine(Unit *u) { | |
4237 | assert(u); | |
4238 | ||
7c65093a | 4239 | /* Check if the unit already exists or is already around, |
0f13f3bd LP |
4240 | * in a number of different ways. Note that to cater for unit |
4241 | * types such as slice, we are generally fine with units that | |
61233823 | 4242 | * are marked UNIT_LOADED even though nothing was |
0f13f3bd LP |
4243 | * actually loaded, as those unit types don't require a file |
4244 | * on disk to validly load. */ | |
4245 | ||
4246 | return !(!IN_SET(u->load_state, UNIT_NOT_FOUND, UNIT_LOADED) || | |
4247 | u->fragment_path || | |
4248 | u->source_path || | |
4249 | !strv_isempty(u->dropin_paths) || | |
0f13f3bd LP |
4250 | u->job || |
4251 | u->merged_into); | |
4252 | } | |
291d565a LP |
4253 | |
4254 | pid_t unit_control_pid(Unit *u) { | |
4255 | assert(u); | |
4256 | ||
4257 | if (UNIT_VTABLE(u)->control_pid) | |
4258 | return UNIT_VTABLE(u)->control_pid(u); | |
4259 | ||
4260 | return 0; | |
4261 | } | |
4262 | ||
4263 | pid_t unit_main_pid(Unit *u) { | |
4264 | assert(u); | |
4265 | ||
4266 | if (UNIT_VTABLE(u)->main_pid) | |
4267 | return UNIT_VTABLE(u)->main_pid(u); | |
4268 | ||
4269 | return 0; | |
4270 | } | |
00d9ef85 LP |
4271 | |
4272 | static void unit_unref_uid_internal( | |
4273 | Unit *u, | |
4274 | uid_t *ref_uid, | |
4275 | bool destroy_now, | |
4276 | void (*_manager_unref_uid)(Manager *m, uid_t uid, bool destroy_now)) { | |
4277 | ||
4278 | assert(u); | |
4279 | assert(ref_uid); | |
4280 | assert(_manager_unref_uid); | |
4281 | ||
4282 | /* Generic implementation of both unit_unref_uid() and unit_unref_gid(), under the assumption that uid_t and | |
4283 | * gid_t are actually the same time, with the same validity rules. | |
4284 | * | |
4285 | * Drops a reference to UID/GID from a unit. */ | |
4286 | ||
4287 | assert_cc(sizeof(uid_t) == sizeof(gid_t)); | |
4288 | assert_cc(UID_INVALID == (uid_t) GID_INVALID); | |
4289 | ||
4290 | if (!uid_is_valid(*ref_uid)) | |
4291 | return; | |
4292 | ||
4293 | _manager_unref_uid(u->manager, *ref_uid, destroy_now); | |
4294 | *ref_uid = UID_INVALID; | |
4295 | } | |
4296 | ||
4297 | void unit_unref_uid(Unit *u, bool destroy_now) { | |
4298 | unit_unref_uid_internal(u, &u->ref_uid, destroy_now, manager_unref_uid); | |
4299 | } | |
4300 | ||
4301 | void unit_unref_gid(Unit *u, bool destroy_now) { | |
4302 | unit_unref_uid_internal(u, (uid_t*) &u->ref_gid, destroy_now, manager_unref_gid); | |
4303 | } | |
4304 | ||
4305 | static int unit_ref_uid_internal( | |
4306 | Unit *u, | |
4307 | uid_t *ref_uid, | |
4308 | uid_t uid, | |
4309 | bool clean_ipc, | |
4310 | int (*_manager_ref_uid)(Manager *m, uid_t uid, bool clean_ipc)) { | |
4311 | ||
4312 | int r; | |
4313 | ||
4314 | assert(u); | |
4315 | assert(ref_uid); | |
4316 | assert(uid_is_valid(uid)); | |
4317 | assert(_manager_ref_uid); | |
4318 | ||
4319 | /* Generic implementation of both unit_ref_uid() and unit_ref_guid(), under the assumption that uid_t and gid_t | |
4320 | * are actually the same type, and have the same validity rules. | |
4321 | * | |
4322 | * Adds a reference on a specific UID/GID to this unit. Each unit referencing the same UID/GID maintains a | |
4323 | * reference so that we can destroy the UID/GID's IPC resources as soon as this is requested and the counter | |
4324 | * drops to zero. */ | |
4325 | ||
4326 | assert_cc(sizeof(uid_t) == sizeof(gid_t)); | |
4327 | assert_cc(UID_INVALID == (uid_t) GID_INVALID); | |
4328 | ||
4329 | if (*ref_uid == uid) | |
4330 | return 0; | |
4331 | ||
4332 | if (uid_is_valid(*ref_uid)) /* Already set? */ | |
4333 | return -EBUSY; | |
4334 | ||
4335 | r = _manager_ref_uid(u->manager, uid, clean_ipc); | |
4336 | if (r < 0) | |
4337 | return r; | |
4338 | ||
4339 | *ref_uid = uid; | |
4340 | return 1; | |
4341 | } | |
4342 | ||
4343 | int unit_ref_uid(Unit *u, uid_t uid, bool clean_ipc) { | |
4344 | return unit_ref_uid_internal(u, &u->ref_uid, uid, clean_ipc, manager_ref_uid); | |
4345 | } | |
4346 | ||
4347 | int unit_ref_gid(Unit *u, gid_t gid, bool clean_ipc) { | |
4348 | return unit_ref_uid_internal(u, (uid_t*) &u->ref_gid, (uid_t) gid, clean_ipc, manager_ref_gid); | |
4349 | } | |
4350 | ||
4351 | static int unit_ref_uid_gid_internal(Unit *u, uid_t uid, gid_t gid, bool clean_ipc) { | |
4352 | int r = 0, q = 0; | |
4353 | ||
4354 | assert(u); | |
4355 | ||
4356 | /* Reference both a UID and a GID in one go. Either references both, or neither. */ | |
4357 | ||
4358 | if (uid_is_valid(uid)) { | |
4359 | r = unit_ref_uid(u, uid, clean_ipc); | |
4360 | if (r < 0) | |
4361 | return r; | |
4362 | } | |
4363 | ||
4364 | if (gid_is_valid(gid)) { | |
4365 | q = unit_ref_gid(u, gid, clean_ipc); | |
4366 | if (q < 0) { | |
4367 | if (r > 0) | |
4368 | unit_unref_uid(u, false); | |
4369 | ||
4370 | return q; | |
4371 | } | |
4372 | } | |
4373 | ||
4374 | return r > 0 || q > 0; | |
4375 | } | |
4376 | ||
4377 | int unit_ref_uid_gid(Unit *u, uid_t uid, gid_t gid) { | |
4378 | ExecContext *c; | |
4379 | int r; | |
4380 | ||
4381 | assert(u); | |
4382 | ||
4383 | c = unit_get_exec_context(u); | |
4384 | ||
4385 | r = unit_ref_uid_gid_internal(u, uid, gid, c ? c->remove_ipc : false); | |
4386 | if (r < 0) | |
4387 | return log_unit_warning_errno(u, r, "Couldn't add UID/GID reference to unit, proceeding without: %m"); | |
4388 | ||
4389 | return r; | |
4390 | } | |
4391 | ||
4392 | void unit_unref_uid_gid(Unit *u, bool destroy_now) { | |
4393 | assert(u); | |
4394 | ||
4395 | unit_unref_uid(u, destroy_now); | |
4396 | unit_unref_gid(u, destroy_now); | |
4397 | } | |
4398 | ||
4399 | void unit_notify_user_lookup(Unit *u, uid_t uid, gid_t gid) { | |
4400 | int r; | |
4401 | ||
4402 | assert(u); | |
4403 | ||
4404 | /* This is invoked whenever one of the forked off processes let's us know the UID/GID its user name/group names | |
4405 | * resolved to. We keep track of which UID/GID is currently assigned in order to be able to destroy its IPC | |
4406 | * objects when no service references the UID/GID anymore. */ | |
4407 | ||
4408 | r = unit_ref_uid_gid(u, uid, gid); | |
4409 | if (r > 0) | |
4410 | bus_unit_send_change_signal(u); | |
4411 | } | |
4b58153d LP |
4412 | |
4413 | int unit_set_invocation_id(Unit *u, sd_id128_t id) { | |
4414 | int r; | |
4415 | ||
4416 | assert(u); | |
4417 | ||
4418 | /* Set the invocation ID for this unit. If we cannot, this will not roll back, but reset the whole thing. */ | |
4419 | ||
4420 | if (sd_id128_equal(u->invocation_id, id)) | |
4421 | return 0; | |
4422 | ||
4423 | if (!sd_id128_is_null(u->invocation_id)) | |
4424 | (void) hashmap_remove_value(u->manager->units_by_invocation_id, &u->invocation_id, u); | |
4425 | ||
4426 | if (sd_id128_is_null(id)) { | |
4427 | r = 0; | |
4428 | goto reset; | |
4429 | } | |
4430 | ||
4431 | r = hashmap_ensure_allocated(&u->manager->units_by_invocation_id, &id128_hash_ops); | |
4432 | if (r < 0) | |
4433 | goto reset; | |
4434 | ||
4435 | u->invocation_id = id; | |
4436 | sd_id128_to_string(id, u->invocation_id_string); | |
4437 | ||
4438 | r = hashmap_put(u->manager->units_by_invocation_id, &u->invocation_id, u); | |
4439 | if (r < 0) | |
4440 | goto reset; | |
4441 | ||
4442 | return 0; | |
4443 | ||
4444 | reset: | |
4445 | u->invocation_id = SD_ID128_NULL; | |
4446 | u->invocation_id_string[0] = 0; | |
4447 | return r; | |
4448 | } | |
4449 | ||
4450 | int unit_acquire_invocation_id(Unit *u) { | |
4451 | sd_id128_t id; | |
4452 | int r; | |
4453 | ||
4454 | assert(u); | |
4455 | ||
4456 | r = sd_id128_randomize(&id); | |
4457 | if (r < 0) | |
4458 | return log_unit_error_errno(u, r, "Failed to generate invocation ID for unit: %m"); | |
4459 | ||
4460 | r = unit_set_invocation_id(u, id); | |
4461 | if (r < 0) | |
4462 | return log_unit_error_errno(u, r, "Failed to set invocation ID for unit: %m"); | |
4463 | ||
4464 | return 0; | |
4465 | } | |
f0d47797 LP |
4466 | |
4467 | void unit_set_exec_params(Unit *s, ExecParameters *p) { | |
4468 | CGroupContext *c; | |
4469 | ||
4470 | assert(s); | |
4471 | assert(s); | |
4472 | ||
4473 | p->cgroup_path = s->cgroup_path; | |
4474 | ||
4475 | c = unit_get_cgroup_context(s); | |
4476 | SET_FLAG(p->flags, EXEC_CGROUP_DELEGATE, c && c->delegate); | |
4477 | } |