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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" |
915b1d01 | 42 | #include "io-util.h" |
4f5dd394 LP |
43 | #include "load-dropin.h" |
44 | #include "load-fragment.h" | |
45 | #include "log.h" | |
46 | #include "macro.h" | |
47 | #include "missing.h" | |
48 | #include "mkdir.h" | |
6bedfcbb | 49 | #include "parse-util.h" |
4f5dd394 | 50 | #include "path-util.h" |
0b452006 | 51 | #include "process-util.h" |
4f5dd394 | 52 | #include "set.h" |
6eb7c172 | 53 | #include "signal-util.h" |
e9db43d5 | 54 | #include "special.h" |
8fcde012 | 55 | #include "stat-util.h" |
d054f0a4 | 56 | #include "stdio-util.h" |
07630cea | 57 | #include "string-util.h" |
4f5dd394 | 58 | #include "strv.h" |
4f4afc88 | 59 | #include "umask-util.h" |
4f5dd394 | 60 | #include "unit-name.h" |
e9db43d5 | 61 | #include "unit.h" |
b1d4f8e1 LP |
62 | #include "user-util.h" |
63 | #include "virt.h" | |
87f0e418 LP |
64 | |
65 | const UnitVTable * const unit_vtable[_UNIT_TYPE_MAX] = { | |
66 | [UNIT_SERVICE] = &service_vtable, | |
87f0e418 LP |
67 | [UNIT_SOCKET] = &socket_vtable, |
68 | [UNIT_TARGET] = &target_vtable, | |
69 | [UNIT_DEVICE] = &device_vtable, | |
70 | [UNIT_MOUNT] = &mount_vtable, | |
71 | [UNIT_AUTOMOUNT] = &automount_vtable, | |
01f78473 | 72 | [UNIT_SWAP] = &swap_vtable, |
e821075a | 73 | [UNIT_TIMER] = &timer_vtable, |
a016b922 | 74 | [UNIT_PATH] = &path_vtable, |
6c12b52e LP |
75 | [UNIT_SLICE] = &slice_vtable, |
76 | [UNIT_SCOPE] = &scope_vtable | |
87f0e418 LP |
77 | }; |
78 | ||
f2341e0a | 79 | static void maybe_warn_about_dependency(Unit *u, const char *other, UnitDependency dependency); |
d1fab3fe | 80 | |
7d17cfbc | 81 | Unit *unit_new(Manager *m, size_t size) { |
87f0e418 LP |
82 | Unit *u; |
83 | ||
84 | assert(m); | |
ac155bb8 | 85 | assert(size >= sizeof(Unit)); |
87f0e418 | 86 | |
7d17cfbc MS |
87 | u = malloc0(size); |
88 | if (!u) | |
87f0e418 LP |
89 | return NULL; |
90 | ||
d5099efc | 91 | u->names = set_new(&string_hash_ops); |
6b430fdb ZJS |
92 | if (!u->names) |
93 | return mfree(u); | |
87f0e418 | 94 | |
ac155bb8 MS |
95 | u->manager = m; |
96 | u->type = _UNIT_TYPE_INVALID; | |
ac155bb8 MS |
97 | u->default_dependencies = true; |
98 | u->unit_file_state = _UNIT_FILE_STATE_INVALID; | |
d2dc52db | 99 | u->unit_file_preset = -1; |
d420282b | 100 | u->on_failure_job_mode = JOB_REPLACE; |
efdb0237 | 101 | u->cgroup_inotify_wd = -1; |
36c16a7c | 102 | u->job_timeout = USEC_INFINITY; |
a2df3ea4 | 103 | u->job_running_timeout = USEC_INFINITY; |
00d9ef85 LP |
104 | u->ref_uid = UID_INVALID; |
105 | u->ref_gid = GID_INVALID; | |
fe700f46 | 106 | u->cpu_usage_last = NSEC_INFINITY; |
87f0e418 | 107 | |
6a48d82f DM |
108 | u->ip_accounting_ingress_map_fd = -1; |
109 | u->ip_accounting_egress_map_fd = -1; | |
110 | u->ipv4_allow_map_fd = -1; | |
111 | u->ipv6_allow_map_fd = -1; | |
112 | u->ipv4_deny_map_fd = -1; | |
113 | u->ipv6_deny_map_fd = -1; | |
114 | ||
6bf0f408 | 115 | RATELIMIT_INIT(u->start_limit, m->default_start_limit_interval, m->default_start_limit_burst); |
67bfdc97 | 116 | RATELIMIT_INIT(u->auto_stop_ratelimit, 10 * USEC_PER_SEC, 16); |
bea355da | 117 | |
87f0e418 LP |
118 | return u; |
119 | } | |
120 | ||
a581e45a LP |
121 | int unit_new_for_name(Manager *m, size_t size, const char *name, Unit **ret) { |
122 | Unit *u; | |
123 | int r; | |
124 | ||
125 | u = unit_new(m, size); | |
126 | if (!u) | |
127 | return -ENOMEM; | |
128 | ||
129 | r = unit_add_name(u, name); | |
130 | if (r < 0) { | |
131 | unit_free(u); | |
132 | return r; | |
133 | } | |
134 | ||
135 | *ret = u; | |
136 | return r; | |
137 | } | |
138 | ||
f278026d LP |
139 | bool unit_has_name(Unit *u, const char *name) { |
140 | assert(u); | |
141 | assert(name); | |
142 | ||
390bc2b1 | 143 | return set_contains(u->names, (char*) name); |
f278026d LP |
144 | } |
145 | ||
598459ce LP |
146 | static void unit_init(Unit *u) { |
147 | CGroupContext *cc; | |
148 | ExecContext *ec; | |
149 | KillContext *kc; | |
150 | ||
151 | assert(u); | |
152 | assert(u->manager); | |
153 | assert(u->type >= 0); | |
154 | ||
155 | cc = unit_get_cgroup_context(u); | |
156 | if (cc) { | |
157 | cgroup_context_init(cc); | |
158 | ||
159 | /* Copy in the manager defaults into the cgroup | |
160 | * context, _before_ the rest of the settings have | |
161 | * been initialized */ | |
162 | ||
163 | cc->cpu_accounting = u->manager->default_cpu_accounting; | |
13c31542 | 164 | cc->io_accounting = u->manager->default_io_accounting; |
377bfd2d | 165 | cc->ip_accounting = u->manager->default_ip_accounting; |
598459ce LP |
166 | cc->blockio_accounting = u->manager->default_blockio_accounting; |
167 | cc->memory_accounting = u->manager->default_memory_accounting; | |
03a7b521 | 168 | cc->tasks_accounting = u->manager->default_tasks_accounting; |
6a48d82f | 169 | cc->ip_accounting = u->manager->default_ip_accounting; |
0af20ea2 LP |
170 | |
171 | if (u->type != UNIT_SLICE) | |
172 | cc->tasks_max = u->manager->default_tasks_max; | |
598459ce LP |
173 | } |
174 | ||
175 | ec = unit_get_exec_context(u); | |
b1edf445 | 176 | if (ec) { |
598459ce LP |
177 | exec_context_init(ec); |
178 | ||
b1edf445 LP |
179 | ec->keyring_mode = MANAGER_IS_SYSTEM(u->manager) ? |
180 | EXEC_KEYRING_PRIVATE : EXEC_KEYRING_INHERIT; | |
181 | } | |
182 | ||
598459ce LP |
183 | kc = unit_get_kill_context(u); |
184 | if (kc) | |
185 | kill_context_init(kc); | |
186 | ||
187 | if (UNIT_VTABLE(u)->init) | |
188 | UNIT_VTABLE(u)->init(u); | |
189 | } | |
190 | ||
87f0e418 | 191 | int unit_add_name(Unit *u, const char *text) { |
598459ce | 192 | _cleanup_free_ char *s = NULL, *i = NULL; |
87f0e418 | 193 | UnitType t; |
87f0e418 LP |
194 | int r; |
195 | ||
196 | assert(u); | |
197 | assert(text); | |
198 | ||
7410616c | 199 | if (unit_name_is_valid(text, UNIT_NAME_TEMPLATE)) { |
598459ce | 200 | |
ac155bb8 | 201 | if (!u->instance) |
9e2f7c11 | 202 | return -EINVAL; |
87f0e418 | 203 | |
7410616c LP |
204 | r = unit_name_replace_instance(text, u->instance, &s); |
205 | if (r < 0) | |
206 | return r; | |
207 | } else { | |
9e2f7c11 | 208 | s = strdup(text); |
7410616c LP |
209 | if (!s) |
210 | return -ENOMEM; | |
211 | } | |
87f0e418 | 212 | |
7410616c LP |
213 | if (set_contains(u->names, s)) |
214 | return 0; | |
215 | if (hashmap_contains(u->manager->units, s)) | |
216 | return -EEXIST; | |
217 | ||
218 | if (!unit_name_is_valid(s, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) | |
598459ce | 219 | return -EINVAL; |
e537352b | 220 | |
7410616c LP |
221 | t = unit_name_to_type(s); |
222 | if (t < 0) | |
223 | return -EINVAL; | |
87f0e418 | 224 | |
598459ce LP |
225 | if (u->type != _UNIT_TYPE_INVALID && t != u->type) |
226 | return -EINVAL; | |
87f0e418 | 227 | |
e48614c4 ZJS |
228 | r = unit_name_to_instance(s, &i); |
229 | if (r < 0) | |
598459ce | 230 | return r; |
87f0e418 | 231 | |
ce99c68a | 232 | if (i && !unit_type_may_template(t)) |
598459ce | 233 | return -EINVAL; |
9e2f7c11 | 234 | |
276c3e78 | 235 | /* Ensure that this unit is either instanced or not instanced, |
7410616c LP |
236 | * but not both. Note that we do allow names with different |
237 | * instance names however! */ | |
598459ce LP |
238 | if (u->type != _UNIT_TYPE_INVALID && !u->instance != !i) |
239 | return -EINVAL; | |
9e2f7c11 | 240 | |
8a993b61 | 241 | if (!unit_type_may_alias(t) && !set_isempty(u->names)) |
598459ce | 242 | return -EEXIST; |
9e2f7c11 | 243 | |
598459ce LP |
244 | if (hashmap_size(u->manager->units) >= MANAGER_MAX_NAMES) |
245 | return -E2BIG; | |
4f0f902f | 246 | |
e48614c4 | 247 | r = set_put(u->names, s); |
7410616c | 248 | if (r < 0) |
598459ce | 249 | return r; |
7410616c | 250 | assert(r > 0); |
87f0e418 | 251 | |
e48614c4 ZJS |
252 | r = hashmap_put(u->manager->units, s, u); |
253 | if (r < 0) { | |
7410616c | 254 | (void) set_remove(u->names, s); |
598459ce | 255 | return r; |
87f0e418 LP |
256 | } |
257 | ||
ac155bb8 | 258 | if (u->type == _UNIT_TYPE_INVALID) { |
ac155bb8 MS |
259 | u->type = t; |
260 | u->id = s; | |
261 | u->instance = i; | |
9e2f7c11 | 262 | |
71fda00f | 263 | LIST_PREPEND(units_by_type, u->manager->units_by_type[t], u); |
e537352b | 264 | |
598459ce | 265 | unit_init(u); |
87f0e418 | 266 | |
598459ce LP |
267 | i = NULL; |
268 | } | |
9e2f7c11 | 269 | |
598459ce | 270 | s = NULL; |
9e2f7c11 | 271 | |
598459ce LP |
272 | unit_add_to_dbus_queue(u); |
273 | return 0; | |
87f0e418 LP |
274 | } |
275 | ||
0ae97ec1 | 276 | int unit_choose_id(Unit *u, const char *name) { |
68eda4bd | 277 | _cleanup_free_ char *t = NULL; |
598459ce | 278 | char *s, *i; |
276c3e78 | 279 | int r; |
0ae97ec1 LP |
280 | |
281 | assert(u); | |
282 | assert(name); | |
283 | ||
7410616c | 284 | if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) { |
9e2f7c11 | 285 | |
ac155bb8 | 286 | if (!u->instance) |
9e2f7c11 LP |
287 | return -EINVAL; |
288 | ||
7410616c LP |
289 | r = unit_name_replace_instance(name, u->instance, &t); |
290 | if (r < 0) | |
291 | return r; | |
9e2f7c11 LP |
292 | |
293 | name = t; | |
294 | } | |
295 | ||
0ae97ec1 | 296 | /* Selects one of the names of this unit as the id */ |
ac155bb8 | 297 | s = set_get(u->names, (char*) name); |
9e2f7c11 | 298 | if (!s) |
0ae97ec1 LP |
299 | return -ENOENT; |
300 | ||
7410616c | 301 | /* Determine the new instance from the new id */ |
e48614c4 ZJS |
302 | r = unit_name_to_instance(s, &i); |
303 | if (r < 0) | |
276c3e78 LP |
304 | return r; |
305 | ||
ac155bb8 | 306 | u->id = s; |
276c3e78 | 307 | |
ac155bb8 MS |
308 | free(u->instance); |
309 | u->instance = i; | |
276c3e78 | 310 | |
c1e1601e | 311 | unit_add_to_dbus_queue(u); |
9e2f7c11 | 312 | |
0ae97ec1 LP |
313 | return 0; |
314 | } | |
315 | ||
f50e0a01 | 316 | int unit_set_description(Unit *u, const char *description) { |
84b26d51 | 317 | int r; |
f50e0a01 LP |
318 | |
319 | assert(u); | |
320 | ||
84b26d51 LP |
321 | r = free_and_strdup(&u->description, empty_to_null(description)); |
322 | if (r < 0) | |
323 | return r; | |
324 | if (r > 0) | |
325 | unit_add_to_dbus_queue(u); | |
c1e1601e | 326 | |
f50e0a01 LP |
327 | return 0; |
328 | } | |
329 | ||
701cc384 | 330 | bool unit_check_gc(Unit *u) { |
a354329f | 331 | UnitActiveState state; |
f0bfbfac | 332 | bool inactive; |
701cc384 LP |
333 | assert(u); |
334 | ||
a354329f | 335 | if (u->job) |
701cc384 LP |
336 | return true; |
337 | ||
a354329f | 338 | if (u->nop_job) |
6c073082 LP |
339 | return true; |
340 | ||
a354329f | 341 | state = unit_active_state(u); |
f0bfbfac | 342 | inactive = state == UNIT_INACTIVE; |
a354329f LP |
343 | |
344 | /* If the unit is inactive and failed and no job is queued for | |
345 | * it, then release its runtime resources */ | |
346 | if (UNIT_IS_INACTIVE_OR_FAILED(state) && | |
347 | UNIT_VTABLE(u)->release_resources) | |
f0bfbfac | 348 | UNIT_VTABLE(u)->release_resources(u, inactive); |
a354329f LP |
349 | |
350 | /* But we keep the unit object around for longer when it is | |
351 | * referenced or configured to not be gc'ed */ | |
f0bfbfac | 352 | if (!inactive) |
701cc384 LP |
353 | return true; |
354 | ||
f5869324 | 355 | if (u->perpetual) |
701cc384 LP |
356 | return true; |
357 | ||
9d576438 LP |
358 | if (u->refs) |
359 | return true; | |
360 | ||
05a98afd LP |
361 | if (sd_bus_track_count(u->bus_track) > 0) |
362 | return true; | |
363 | ||
701cc384 LP |
364 | if (UNIT_VTABLE(u)->check_gc) |
365 | if (UNIT_VTABLE(u)->check_gc(u)) | |
366 | return true; | |
367 | ||
368 | return false; | |
369 | } | |
370 | ||
87f0e418 LP |
371 | void unit_add_to_load_queue(Unit *u) { |
372 | assert(u); | |
ac155bb8 | 373 | assert(u->type != _UNIT_TYPE_INVALID); |
87f0e418 | 374 | |
ac155bb8 | 375 | if (u->load_state != UNIT_STUB || u->in_load_queue) |
87f0e418 LP |
376 | return; |
377 | ||
71fda00f | 378 | LIST_PREPEND(load_queue, u->manager->load_queue, u); |
ac155bb8 | 379 | u->in_load_queue = true; |
87f0e418 LP |
380 | } |
381 | ||
23a177ef LP |
382 | void unit_add_to_cleanup_queue(Unit *u) { |
383 | assert(u); | |
384 | ||
ac155bb8 | 385 | if (u->in_cleanup_queue) |
23a177ef LP |
386 | return; |
387 | ||
71fda00f | 388 | LIST_PREPEND(cleanup_queue, u->manager->cleanup_queue, u); |
ac155bb8 | 389 | u->in_cleanup_queue = true; |
23a177ef LP |
390 | } |
391 | ||
701cc384 LP |
392 | void unit_add_to_gc_queue(Unit *u) { |
393 | assert(u); | |
394 | ||
ac155bb8 | 395 | if (u->in_gc_queue || u->in_cleanup_queue) |
701cc384 LP |
396 | return; |
397 | ||
398 | if (unit_check_gc(u)) | |
399 | return; | |
400 | ||
c5a97ed1 | 401 | LIST_PREPEND(gc_queue, u->manager->gc_unit_queue, u); |
ac155bb8 | 402 | u->in_gc_queue = true; |
701cc384 LP |
403 | } |
404 | ||
c1e1601e LP |
405 | void unit_add_to_dbus_queue(Unit *u) { |
406 | assert(u); | |
ac155bb8 | 407 | assert(u->type != _UNIT_TYPE_INVALID); |
c1e1601e | 408 | |
ac155bb8 | 409 | if (u->load_state == UNIT_STUB || u->in_dbus_queue) |
c1e1601e LP |
410 | return; |
411 | ||
a567261a | 412 | /* Shortcut things if nobody cares */ |
8f8f05a9 | 413 | if (sd_bus_track_count(u->manager->subscribed) <= 0 && |
ae572acd | 414 | sd_bus_track_count(u->bus_track) <= 0 && |
8f8f05a9 | 415 | set_isempty(u->manager->private_buses)) { |
ac155bb8 | 416 | u->sent_dbus_new_signal = true; |
94b6dfa2 LP |
417 | return; |
418 | } | |
419 | ||
71fda00f | 420 | LIST_PREPEND(dbus_queue, u->manager->dbus_unit_queue, u); |
ac155bb8 | 421 | u->in_dbus_queue = true; |
c1e1601e LP |
422 | } |
423 | ||
eef85c4a | 424 | static void bidi_set_free(Unit *u, Hashmap *h) { |
87f0e418 | 425 | Unit *other; |
eef85c4a LP |
426 | Iterator i; |
427 | void *v; | |
87f0e418 LP |
428 | |
429 | assert(u); | |
430 | ||
eef85c4a | 431 | /* Frees the hashmap and makes sure we are dropped from the inverse pointers */ |
87f0e418 | 432 | |
eef85c4a | 433 | HASHMAP_FOREACH_KEY(v, other, h, i) { |
87f0e418 LP |
434 | UnitDependency d; |
435 | ||
436 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) | |
eef85c4a | 437 | hashmap_remove(other->dependencies[d], u); |
701cc384 LP |
438 | |
439 | unit_add_to_gc_queue(other); | |
87f0e418 LP |
440 | } |
441 | ||
eef85c4a | 442 | hashmap_free(h); |
87f0e418 LP |
443 | } |
444 | ||
c2756a68 LP |
445 | static void unit_remove_transient(Unit *u) { |
446 | char **i; | |
447 | ||
448 | assert(u); | |
449 | ||
450 | if (!u->transient) | |
451 | return; | |
452 | ||
453 | if (u->fragment_path) | |
3f5e8115 | 454 | (void) unlink(u->fragment_path); |
c2756a68 LP |
455 | |
456 | STRV_FOREACH(i, u->dropin_paths) { | |
39591351 | 457 | _cleanup_free_ char *p = NULL, *pp = NULL; |
c2756a68 | 458 | |
39591351 LP |
459 | p = dirname_malloc(*i); /* Get the drop-in directory from the drop-in file */ |
460 | if (!p) | |
461 | continue; | |
462 | ||
463 | pp = dirname_malloc(p); /* Get the config directory from the drop-in directory */ | |
464 | if (!pp) | |
465 | continue; | |
466 | ||
467 | /* Only drop transient drop-ins */ | |
468 | if (!path_equal(u->manager->lookup_paths.transient, pp)) | |
469 | continue; | |
c2756a68 | 470 | |
39591351 LP |
471 | (void) unlink(*i); |
472 | (void) rmdir(p); | |
c2756a68 LP |
473 | } |
474 | } | |
475 | ||
a57f7e2c | 476 | static void unit_free_requires_mounts_for(Unit *u) { |
eef85c4a | 477 | assert(u); |
a57f7e2c | 478 | |
eef85c4a LP |
479 | for (;;) { |
480 | _cleanup_free_ char *path; | |
a57f7e2c | 481 | |
eef85c4a LP |
482 | path = hashmap_steal_first_key(u->requires_mounts_for); |
483 | if (!path) | |
484 | break; | |
485 | else { | |
486 | char s[strlen(path) + 1]; | |
a57f7e2c | 487 | |
eef85c4a LP |
488 | PATH_FOREACH_PREFIX_MORE(s, path) { |
489 | char *y; | |
490 | Set *x; | |
491 | ||
492 | x = hashmap_get2(u->manager->units_requiring_mounts_for, s, (void**) &y); | |
493 | if (!x) | |
494 | continue; | |
a57f7e2c | 495 | |
eef85c4a | 496 | (void) set_remove(x, u); |
a57f7e2c | 497 | |
eef85c4a LP |
498 | if (set_isempty(x)) { |
499 | (void) hashmap_remove(u->manager->units_requiring_mounts_for, y); | |
500 | free(y); | |
501 | set_free(x); | |
502 | } | |
a57f7e2c LP |
503 | } |
504 | } | |
505 | } | |
506 | ||
eef85c4a | 507 | u->requires_mounts_for = hashmap_free(u->requires_mounts_for); |
a57f7e2c LP |
508 | } |
509 | ||
598459ce LP |
510 | static void unit_done(Unit *u) { |
511 | ExecContext *ec; | |
512 | CGroupContext *cc; | |
513 | ||
514 | assert(u); | |
515 | ||
516 | if (u->type < 0) | |
517 | return; | |
518 | ||
519 | if (UNIT_VTABLE(u)->done) | |
520 | UNIT_VTABLE(u)->done(u); | |
521 | ||
522 | ec = unit_get_exec_context(u); | |
523 | if (ec) | |
524 | exec_context_done(ec); | |
525 | ||
526 | cc = unit_get_cgroup_context(u); | |
527 | if (cc) | |
528 | cgroup_context_done(cc); | |
529 | } | |
530 | ||
87f0e418 LP |
531 | void unit_free(Unit *u) { |
532 | UnitDependency d; | |
533 | Iterator i; | |
534 | char *t; | |
535 | ||
c9d5c9c0 LP |
536 | if (!u) |
537 | return; | |
87f0e418 | 538 | |
4f4afc88 LP |
539 | if (u->transient_file) |
540 | fclose(u->transient_file); | |
541 | ||
2c289ea8 | 542 | if (!MANAGER_IS_RELOADING(u->manager)) |
c2756a68 LP |
543 | unit_remove_transient(u); |
544 | ||
c1e1601e LP |
545 | bus_unit_send_removed_signal(u); |
546 | ||
598459ce | 547 | unit_done(u); |
a013b84b | 548 | |
cf9fd508 DM |
549 | sd_bus_slot_unref(u->match_bus_slot); |
550 | ||
05a98afd LP |
551 | sd_bus_track_unref(u->bus_track); |
552 | u->deserialized_refs = strv_free(u->deserialized_refs); | |
553 | ||
a57f7e2c LP |
554 | unit_free_requires_mounts_for(u); |
555 | ||
ac155bb8 MS |
556 | SET_FOREACH(t, u->names, i) |
557 | hashmap_remove_value(u->manager->units, t, u); | |
87f0e418 | 558 | |
4b58153d LP |
559 | if (!sd_id128_is_null(u->invocation_id)) |
560 | hashmap_remove_value(u->manager->units_by_invocation_id, &u->invocation_id, u); | |
561 | ||
97e7d748 MS |
562 | if (u->job) { |
563 | Job *j = u->job; | |
564 | job_uninstall(j); | |
565 | job_free(j); | |
566 | } | |
964e0949 | 567 | |
e0209d83 MS |
568 | if (u->nop_job) { |
569 | Job *j = u->nop_job; | |
570 | job_uninstall(j); | |
571 | job_free(j); | |
572 | } | |
573 | ||
964e0949 | 574 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) |
ac155bb8 | 575 | bidi_set_free(u, u->dependencies[d]); |
964e0949 | 576 | |
ac155bb8 | 577 | if (u->type != _UNIT_TYPE_INVALID) |
71fda00f | 578 | LIST_REMOVE(units_by_type, u->manager->units_by_type[u->type], u); |
ef734fd6 | 579 | |
ac155bb8 | 580 | if (u->in_load_queue) |
71fda00f | 581 | LIST_REMOVE(load_queue, u->manager->load_queue, u); |
87f0e418 | 582 | |
ac155bb8 | 583 | if (u->in_dbus_queue) |
71fda00f | 584 | LIST_REMOVE(dbus_queue, u->manager->dbus_unit_queue, u); |
c1e1601e | 585 | |
ac155bb8 | 586 | if (u->in_cleanup_queue) |
71fda00f | 587 | LIST_REMOVE(cleanup_queue, u->manager->cleanup_queue, u); |
23a177ef | 588 | |
a2d72e26 | 589 | if (u->in_gc_queue) |
c5a97ed1 | 590 | LIST_REMOVE(gc_queue, u->manager->gc_unit_queue, u); |
701cc384 | 591 | |
91a6073e LP |
592 | if (u->in_cgroup_realize_queue) |
593 | LIST_REMOVE(cgroup_realize_queue, u->manager->cgroup_realize_queue, u); | |
87f0e418 | 594 | |
09e24654 LP |
595 | if (u->in_cgroup_empty_queue) |
596 | LIST_REMOVE(cgroup_empty_queue, u->manager->cgroup_empty_queue, u); | |
597 | ||
efdb0237 | 598 | unit_release_cgroup(u); |
72673e86 | 599 | |
00d9ef85 LP |
600 | unit_unref_uid_gid(u, false); |
601 | ||
5269eb6b | 602 | (void) manager_update_failed_units(u->manager, u, false); |
db785129 | 603 | set_remove(u->manager->startup_units, u); |
f755e3b7 | 604 | |
ac155bb8 | 605 | free(u->description); |
49dbfa7b | 606 | strv_free(u->documentation); |
ac155bb8 | 607 | free(u->fragment_path); |
1b64d026 | 608 | free(u->source_path); |
ae7a7182 | 609 | strv_free(u->dropin_paths); |
ac155bb8 | 610 | free(u->instance); |
87f0e418 | 611 | |
f189ab18 LP |
612 | free(u->job_timeout_reboot_arg); |
613 | ||
ac155bb8 | 614 | set_free_free(u->names); |
87f0e418 | 615 | |
a911bb9a LP |
616 | unit_unwatch_all_pids(u); |
617 | ||
ac155bb8 | 618 | condition_free_list(u->conditions); |
59fccdc5 | 619 | condition_free_list(u->asserts); |
52661efd | 620 | |
6bf0f408 LP |
621 | free(u->reboot_arg); |
622 | ||
702a2d8f LP |
623 | unit_ref_unset(&u->slice); |
624 | ||
ac155bb8 MS |
625 | while (u->refs) |
626 | unit_ref_unset(u->refs); | |
57020a3a | 627 | |
6a48d82f DM |
628 | safe_close(u->ip_accounting_ingress_map_fd); |
629 | safe_close(u->ip_accounting_egress_map_fd); | |
630 | ||
631 | safe_close(u->ipv4_allow_map_fd); | |
632 | safe_close(u->ipv6_allow_map_fd); | |
633 | safe_close(u->ipv4_deny_map_fd); | |
634 | safe_close(u->ipv6_deny_map_fd); | |
635 | ||
636 | bpf_program_unref(u->ip_bpf_ingress); | |
637 | bpf_program_unref(u->ip_bpf_egress); | |
638 | ||
87f0e418 LP |
639 | free(u); |
640 | } | |
641 | ||
642 | UnitActiveState unit_active_state(Unit *u) { | |
643 | assert(u); | |
644 | ||
ac155bb8 | 645 | if (u->load_state == UNIT_MERGED) |
6124958c LP |
646 | return unit_active_state(unit_follow_merge(u)); |
647 | ||
648 | /* After a reload it might happen that a unit is not correctly | |
649 | * loaded but still has a process around. That's why we won't | |
fdf20a31 | 650 | * shortcut failed loading to UNIT_INACTIVE_FAILED. */ |
87f0e418 LP |
651 | |
652 | return UNIT_VTABLE(u)->active_state(u); | |
653 | } | |
654 | ||
10a94420 LP |
655 | const char* unit_sub_state_to_string(Unit *u) { |
656 | assert(u); | |
657 | ||
658 | return UNIT_VTABLE(u)->sub_state_to_string(u); | |
659 | } | |
660 | ||
eef85c4a LP |
661 | static int set_complete_move(Set **s, Set **other) { |
662 | assert(s); | |
663 | assert(other); | |
664 | ||
665 | if (!other) | |
666 | return 0; | |
667 | ||
668 | if (*s) | |
669 | return set_move(*s, *other); | |
670 | else { | |
671 | *s = *other; | |
672 | *other = NULL; | |
673 | } | |
7c0b05e5 | 674 | |
eef85c4a LP |
675 | return 0; |
676 | } | |
677 | ||
678 | static int hashmap_complete_move(Hashmap **s, Hashmap **other) { | |
23a177ef LP |
679 | assert(s); |
680 | assert(other); | |
87f0e418 | 681 | |
23a177ef | 682 | if (!*other) |
7c0b05e5 | 683 | return 0; |
87f0e418 | 684 | |
eef85c4a LP |
685 | if (*s) |
686 | return hashmap_move(*s, *other); | |
687 | else { | |
23a177ef LP |
688 | *s = *other; |
689 | *other = NULL; | |
690 | } | |
7c0b05e5 MS |
691 | |
692 | return 0; | |
23a177ef | 693 | } |
87f0e418 | 694 | |
7c0b05e5 | 695 | static int merge_names(Unit *u, Unit *other) { |
23a177ef LP |
696 | char *t; |
697 | Iterator i; | |
7c0b05e5 | 698 | int r; |
87f0e418 | 699 | |
23a177ef LP |
700 | assert(u); |
701 | assert(other); | |
702 | ||
eef85c4a | 703 | r = set_complete_move(&u->names, &other->names); |
7c0b05e5 MS |
704 | if (r < 0) |
705 | return r; | |
23a177ef | 706 | |
ac155bb8 MS |
707 | set_free_free(other->names); |
708 | other->names = NULL; | |
709 | other->id = NULL; | |
23a177ef | 710 | |
ac155bb8 MS |
711 | SET_FOREACH(t, u->names, i) |
712 | assert_se(hashmap_replace(u->manager->units, t, u) == 0); | |
7c0b05e5 MS |
713 | |
714 | return 0; | |
87f0e418 LP |
715 | } |
716 | ||
09a65f92 MS |
717 | static int reserve_dependencies(Unit *u, Unit *other, UnitDependency d) { |
718 | unsigned n_reserve; | |
719 | ||
720 | assert(u); | |
721 | assert(other); | |
722 | assert(d < _UNIT_DEPENDENCY_MAX); | |
723 | ||
724 | /* | |
725 | * If u does not have this dependency set allocated, there is no need | |
f131770b | 726 | * to reserve anything. In that case other's set will be transferred |
09a65f92 MS |
727 | * as a whole to u by complete_move(). |
728 | */ | |
729 | if (!u->dependencies[d]) | |
730 | return 0; | |
731 | ||
732 | /* merge_dependencies() will skip a u-on-u dependency */ | |
eef85c4a | 733 | n_reserve = hashmap_size(other->dependencies[d]) - !!hashmap_get(other->dependencies[d], u); |
09a65f92 | 734 | |
eef85c4a | 735 | return hashmap_reserve(u->dependencies[d], n_reserve); |
09a65f92 MS |
736 | } |
737 | ||
d1fab3fe | 738 | static void merge_dependencies(Unit *u, Unit *other, const char *other_id, UnitDependency d) { |
23a177ef LP |
739 | Iterator i; |
740 | Unit *back; | |
eef85c4a | 741 | void *v; |
87f0e418 | 742 | int r; |
23a177ef | 743 | |
eef85c4a LP |
744 | /* Merges all dependencies of type 'd' of the unit 'other' into the deps of the unit 'u' */ |
745 | ||
23a177ef LP |
746 | assert(u); |
747 | assert(other); | |
748 | assert(d < _UNIT_DEPENDENCY_MAX); | |
749 | ||
eef85c4a LP |
750 | /* Fix backwards pointers. Let's iterate through all dependendent units of the other unit. */ |
751 | HASHMAP_FOREACH_KEY(v, back, other->dependencies[d], i) { | |
23a177ef LP |
752 | UnitDependency k; |
753 | ||
eef85c4a LP |
754 | /* Let's now iterate through the dependencies of that dependencies of the other units, looking for |
755 | * pointers back, and let's fix them up, to instead point to 'u'. */ | |
756 | ||
e48614c4 | 757 | for (k = 0; k < _UNIT_DEPENDENCY_MAX; k++) { |
e66047ff | 758 | if (back == u) { |
eef85c4a LP |
759 | /* Do not add dependencies between u and itself. */ |
760 | if (hashmap_remove(back->dependencies[k], other)) | |
f2341e0a | 761 | maybe_warn_about_dependency(u, other_id, k); |
e66047ff | 762 | } else { |
eef85c4a LP |
763 | UnitDependencyInfo di_u, di_other, di_merged; |
764 | ||
765 | /* Let's drop this dependency between "back" and "other", and let's create it between | |
766 | * "back" and "u" instead. Let's merge the bit masks of the dependency we are moving, | |
767 | * and any such dependency which might already exist */ | |
768 | ||
769 | di_other.data = hashmap_get(back->dependencies[k], other); | |
770 | if (!di_other.data) | |
771 | continue; /* dependency isn't set, let's try the next one */ | |
772 | ||
773 | di_u.data = hashmap_get(back->dependencies[k], u); | |
774 | ||
775 | di_merged = (UnitDependencyInfo) { | |
776 | .origin_mask = di_u.origin_mask | di_other.origin_mask, | |
777 | .destination_mask = di_u.destination_mask | di_other.destination_mask, | |
778 | }; | |
779 | ||
780 | r = hashmap_remove_and_replace(back->dependencies[k], other, u, di_merged.data); | |
781 | if (r < 0) | |
782 | log_warning_errno(r, "Failed to remove/replace: back=%s other=%s u=%s: %m", back->id, other_id, u->id); | |
783 | assert(r >= 0); | |
784 | ||
785 | /* assert_se(hashmap_remove_and_replace(back->dependencies[k], other, u, di_merged.data) >= 0); */ | |
e66047ff | 786 | } |
e48614c4 | 787 | } |
eef85c4a | 788 | |
23a177ef LP |
789 | } |
790 | ||
e66047ff | 791 | /* Also do not move dependencies on u to itself */ |
eef85c4a | 792 | back = hashmap_remove(other->dependencies[d], u); |
d1fab3fe | 793 | if (back) |
f2341e0a | 794 | maybe_warn_about_dependency(u, other_id, d); |
e66047ff | 795 | |
7c0b05e5 | 796 | /* The move cannot fail. The caller must have performed a reservation. */ |
eef85c4a | 797 | assert_se(hashmap_complete_move(&u->dependencies[d], &other->dependencies[d]) == 0); |
23a177ef | 798 | |
eef85c4a | 799 | other->dependencies[d] = hashmap_free(other->dependencies[d]); |
23a177ef LP |
800 | } |
801 | ||
802 | int unit_merge(Unit *u, Unit *other) { | |
87f0e418 | 803 | UnitDependency d; |
d1fab3fe | 804 | const char *other_id = NULL; |
09a65f92 | 805 | int r; |
87f0e418 LP |
806 | |
807 | assert(u); | |
808 | assert(other); | |
ac155bb8 MS |
809 | assert(u->manager == other->manager); |
810 | assert(u->type != _UNIT_TYPE_INVALID); | |
87f0e418 | 811 | |
cc916967 LP |
812 | other = unit_follow_merge(other); |
813 | ||
23a177ef LP |
814 | if (other == u) |
815 | return 0; | |
816 | ||
ac155bb8 | 817 | if (u->type != other->type) |
9e2f7c11 LP |
818 | return -EINVAL; |
819 | ||
ac155bb8 | 820 | if (!u->instance != !other->instance) |
87f0e418 LP |
821 | return -EINVAL; |
822 | ||
8a993b61 | 823 | if (!unit_type_may_alias(u->type)) /* Merging only applies to unit names that support aliases */ |
934e749e LP |
824 | return -EEXIST; |
825 | ||
ec2ce0c5 | 826 | if (!IN_SET(other->load_state, UNIT_STUB, UNIT_NOT_FOUND)) |
23a177ef | 827 | return -EEXIST; |
87f0e418 | 828 | |
ac155bb8 | 829 | if (other->job) |
819e213f LP |
830 | return -EEXIST; |
831 | ||
e0209d83 MS |
832 | if (other->nop_job) |
833 | return -EEXIST; | |
834 | ||
fdf20a31 | 835 | if (!UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other))) |
819e213f LP |
836 | return -EEXIST; |
837 | ||
d1fab3fe ZJS |
838 | if (other->id) |
839 | other_id = strdupa(other->id); | |
840 | ||
09a65f92 MS |
841 | /* Make reservations to ensure merge_dependencies() won't fail */ |
842 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) { | |
843 | r = reserve_dependencies(u, other, d); | |
844 | /* | |
845 | * We don't rollback reservations if we fail. We don't have | |
846 | * a way to undo reservations. A reservation is not a leak. | |
847 | */ | |
848 | if (r < 0) | |
849 | return r; | |
850 | } | |
851 | ||
87f0e418 | 852 | /* Merge names */ |
7c0b05e5 MS |
853 | r = merge_names(u, other); |
854 | if (r < 0) | |
855 | return r; | |
87f0e418 | 856 | |
57020a3a | 857 | /* Redirect all references */ |
ac155bb8 MS |
858 | while (other->refs) |
859 | unit_ref_set(other->refs, u); | |
57020a3a | 860 | |
87f0e418 LP |
861 | /* Merge dependencies */ |
862 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) | |
d1fab3fe | 863 | merge_dependencies(u, other, other_id, d); |
87f0e418 | 864 | |
ac155bb8 MS |
865 | other->load_state = UNIT_MERGED; |
866 | other->merged_into = u; | |
23a177ef | 867 | |
3616a49c LP |
868 | /* If there is still some data attached to the other node, we |
869 | * don't need it anymore, and can free it. */ | |
ac155bb8 | 870 | if (other->load_state != UNIT_STUB) |
3616a49c LP |
871 | if (UNIT_VTABLE(other)->done) |
872 | UNIT_VTABLE(other)->done(other); | |
873 | ||
874 | unit_add_to_dbus_queue(u); | |
23a177ef LP |
875 | unit_add_to_cleanup_queue(other); |
876 | ||
877 | return 0; | |
878 | } | |
879 | ||
880 | int unit_merge_by_name(Unit *u, const char *name) { | |
934e749e | 881 | _cleanup_free_ char *s = NULL; |
23a177ef | 882 | Unit *other; |
9e2f7c11 | 883 | int r; |
23a177ef LP |
884 | |
885 | assert(u); | |
886 | assert(name); | |
887 | ||
7410616c | 888 | if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) { |
ac155bb8 | 889 | if (!u->instance) |
9e2f7c11 LP |
890 | return -EINVAL; |
891 | ||
7410616c LP |
892 | r = unit_name_replace_instance(name, u->instance, &s); |
893 | if (r < 0) | |
894 | return r; | |
9e2f7c11 LP |
895 | |
896 | name = s; | |
897 | } | |
898 | ||
c2756a68 | 899 | other = manager_get_unit(u->manager, name); |
7410616c LP |
900 | if (other) |
901 | return unit_merge(u, other); | |
23a177ef | 902 | |
7410616c | 903 | return unit_add_name(u, name); |
23a177ef LP |
904 | } |
905 | ||
906 | Unit* unit_follow_merge(Unit *u) { | |
907 | assert(u); | |
908 | ||
ac155bb8 MS |
909 | while (u->load_state == UNIT_MERGED) |
910 | assert_se(u = u->merged_into); | |
23a177ef LP |
911 | |
912 | return u; | |
913 | } | |
914 | ||
915 | int unit_add_exec_dependencies(Unit *u, ExecContext *c) { | |
ada5e276 YW |
916 | ExecDirectoryType dt; |
917 | char **dp; | |
23a177ef LP |
918 | int r; |
919 | ||
920 | assert(u); | |
921 | assert(c); | |
922 | ||
36be24c8 | 923 | if (c->working_directory) { |
eef85c4a | 924 | r = unit_require_mounts_for(u, c->working_directory, UNIT_DEPENDENCY_FILE); |
36be24c8 ZJS |
925 | if (r < 0) |
926 | return r; | |
927 | } | |
928 | ||
929 | if (c->root_directory) { | |
eef85c4a | 930 | r = unit_require_mounts_for(u, c->root_directory, UNIT_DEPENDENCY_FILE); |
36be24c8 ZJS |
931 | if (r < 0) |
932 | return r; | |
933 | } | |
934 | ||
915e6d16 | 935 | if (c->root_image) { |
eef85c4a | 936 | r = unit_require_mounts_for(u, c->root_image, UNIT_DEPENDENCY_FILE); |
915e6d16 LP |
937 | if (r < 0) |
938 | return r; | |
939 | } | |
940 | ||
72fd1768 | 941 | for (dt = 0; dt < _EXEC_DIRECTORY_TYPE_MAX; dt++) { |
ada5e276 YW |
942 | if (!u->manager->prefix[dt]) |
943 | continue; | |
944 | ||
945 | STRV_FOREACH(dp, c->directories[dt].paths) { | |
946 | _cleanup_free_ char *p; | |
947 | ||
948 | p = strjoin(u->manager->prefix[dt], "/", *dp); | |
949 | if (!p) | |
950 | return -ENOMEM; | |
951 | ||
eef85c4a | 952 | r = unit_require_mounts_for(u, p, UNIT_DEPENDENCY_FILE); |
ada5e276 YW |
953 | if (r < 0) |
954 | return r; | |
955 | } | |
956 | } | |
957 | ||
463d0d15 | 958 | if (!MANAGER_IS_SYSTEM(u->manager)) |
b46a529c LP |
959 | return 0; |
960 | ||
961 | if (c->private_tmp) { | |
d71f0505 LP |
962 | const char *p; |
963 | ||
964 | FOREACH_STRING(p, "/tmp", "/var/tmp") { | |
eef85c4a | 965 | r = unit_require_mounts_for(u, p, UNIT_DEPENDENCY_FILE); |
d71f0505 LP |
966 | if (r < 0) |
967 | return r; | |
968 | } | |
b46a529c | 969 | |
eef85c4a | 970 | r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_TMPFILES_SETUP_SERVICE, NULL, true, UNIT_DEPENDENCY_FILE); |
b46a529c LP |
971 | if (r < 0) |
972 | return r; | |
973 | } | |
974 | ||
52c239d7 LB |
975 | if (!IN_SET(c->std_output, |
976 | EXEC_OUTPUT_JOURNAL, EXEC_OUTPUT_JOURNAL_AND_CONSOLE, | |
977 | EXEC_OUTPUT_KMSG, EXEC_OUTPUT_KMSG_AND_CONSOLE, | |
978 | EXEC_OUTPUT_SYSLOG, EXEC_OUTPUT_SYSLOG_AND_CONSOLE) && | |
979 | !IN_SET(c->std_error, | |
980 | EXEC_OUTPUT_JOURNAL, EXEC_OUTPUT_JOURNAL_AND_CONSOLE, | |
981 | EXEC_OUTPUT_KMSG, EXEC_OUTPUT_KMSG_AND_CONSOLE, | |
982 | EXEC_OUTPUT_SYSLOG, EXEC_OUTPUT_SYSLOG_AND_CONSOLE)) | |
23a177ef LP |
983 | return 0; |
984 | ||
985 | /* If syslog or kernel logging is requested, make sure our own | |
986 | * logging daemon is run first. */ | |
987 | ||
eef85c4a | 988 | r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_JOURNALD_SOCKET, NULL, true, UNIT_DEPENDENCY_FILE); |
b46a529c LP |
989 | if (r < 0) |
990 | return r; | |
23a177ef | 991 | |
87f0e418 LP |
992 | return 0; |
993 | } | |
994 | ||
87f0e418 LP |
995 | const char *unit_description(Unit *u) { |
996 | assert(u); | |
997 | ||
ac155bb8 MS |
998 | if (u->description) |
999 | return u->description; | |
87f0e418 | 1000 | |
ac155bb8 | 1001 | return strna(u->id); |
87f0e418 LP |
1002 | } |
1003 | ||
eef85c4a LP |
1004 | static void print_unit_dependency_mask(FILE *f, const char *kind, UnitDependencyMask mask, bool *space) { |
1005 | const struct { | |
1006 | UnitDependencyMask mask; | |
1007 | const char *name; | |
1008 | } table[] = { | |
1009 | { UNIT_DEPENDENCY_FILE, "file" }, | |
1010 | { UNIT_DEPENDENCY_IMPLICIT, "implicit" }, | |
1011 | { UNIT_DEPENDENCY_DEFAULT, "default" }, | |
1012 | { UNIT_DEPENDENCY_UDEV, "udev" }, | |
1013 | { UNIT_DEPENDENCY_PATH, "path" }, | |
1014 | { UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT, "mountinfo-implicit" }, | |
1015 | { UNIT_DEPENDENCY_MOUNTINFO_DEFAULT, "mountinfo-default" }, | |
1016 | { UNIT_DEPENDENCY_PROC_SWAP, "proc-swap" }, | |
1017 | }; | |
1018 | size_t i; | |
1019 | ||
1020 | assert(f); | |
1021 | assert(kind); | |
1022 | assert(space); | |
1023 | ||
1024 | for (i = 0; i < ELEMENTSOF(table); i++) { | |
1025 | ||
1026 | if (mask == 0) | |
1027 | break; | |
1028 | ||
1029 | if ((mask & table[i].mask) == table[i].mask) { | |
1030 | if (*space) | |
1031 | fputc(' ', f); | |
1032 | else | |
1033 | *space = true; | |
1034 | ||
1035 | fputs(kind, f); | |
1036 | fputs("-", f); | |
1037 | fputs(table[i].name, f); | |
1038 | ||
1039 | mask &= ~table[i].mask; | |
1040 | } | |
1041 | } | |
1042 | ||
1043 | assert(mask == 0); | |
1044 | } | |
1045 | ||
87f0e418 | 1046 | void unit_dump(Unit *u, FILE *f, const char *prefix) { |
49dbfa7b | 1047 | char *t, **j; |
87f0e418 LP |
1048 | UnitDependency d; |
1049 | Iterator i; | |
47be870b | 1050 | const char *prefix2; |
173e3821 | 1051 | char |
a483fb59 | 1052 | timestamp0[FORMAT_TIMESTAMP_MAX], |
173e3821 LP |
1053 | timestamp1[FORMAT_TIMESTAMP_MAX], |
1054 | timestamp2[FORMAT_TIMESTAMP_MAX], | |
1055 | timestamp3[FORMAT_TIMESTAMP_MAX], | |
faf919f1 LP |
1056 | timestamp4[FORMAT_TIMESTAMP_MAX], |
1057 | timespan[FORMAT_TIMESPAN_MAX]; | |
a7f241db | 1058 | Unit *following; |
eeaedb7c LP |
1059 | _cleanup_set_free_ Set *following_set = NULL; |
1060 | int r; | |
05a98afd | 1061 | const char *n; |
87f0e418 LP |
1062 | |
1063 | assert(u); | |
ac155bb8 | 1064 | assert(u->type >= 0); |
87f0e418 | 1065 | |
4c940960 | 1066 | prefix = strempty(prefix); |
63c372cb | 1067 | prefix2 = strjoina(prefix, "\t"); |
87f0e418 LP |
1068 | |
1069 | fprintf(f, | |
40d50879 | 1070 | "%s-> Unit %s:\n" |
87f0e418 | 1071 | "%s\tDescription: %s\n" |
9e2f7c11 | 1072 | "%s\tInstance: %s\n" |
87f0e418 | 1073 | "%s\tUnit Load State: %s\n" |
2fad8195 | 1074 | "%s\tUnit Active State: %s\n" |
b895d155 | 1075 | "%s\tState Change Timestamp: %s\n" |
173e3821 | 1076 | "%s\tInactive Exit Timestamp: %s\n" |
2fad8195 | 1077 | "%s\tActive Enter Timestamp: %s\n" |
701cc384 | 1078 | "%s\tActive Exit Timestamp: %s\n" |
173e3821 | 1079 | "%s\tInactive Enter Timestamp: %s\n" |
45fb0699 | 1080 | "%s\tGC Check Good: %s\n" |
9444b1f2 | 1081 | "%s\tNeed Daemon Reload: %s\n" |
c2756a68 | 1082 | "%s\tTransient: %s\n" |
f5869324 | 1083 | "%s\tPerpetual: %s\n" |
4ad49000 LP |
1084 | "%s\tSlice: %s\n" |
1085 | "%s\tCGroup: %s\n" | |
aae7e17f | 1086 | "%s\tCGroup realized: %s\n", |
ac155bb8 | 1087 | prefix, u->id, |
87f0e418 | 1088 | prefix, unit_description(u), |
ac155bb8 MS |
1089 | prefix, strna(u->instance), |
1090 | prefix, unit_load_state_to_string(u->load_state), | |
2fad8195 | 1091 | prefix, unit_active_state_to_string(unit_active_state(u)), |
a483fb59 | 1092 | prefix, strna(format_timestamp(timestamp0, sizeof(timestamp0), u->state_change_timestamp.realtime)), |
ac155bb8 MS |
1093 | prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->inactive_exit_timestamp.realtime)), |
1094 | prefix, strna(format_timestamp(timestamp2, sizeof(timestamp2), u->active_enter_timestamp.realtime)), | |
1095 | prefix, strna(format_timestamp(timestamp3, sizeof(timestamp3), u->active_exit_timestamp.realtime)), | |
1096 | prefix, strna(format_timestamp(timestamp4, sizeof(timestamp4), u->inactive_enter_timestamp.realtime)), | |
45fb0699 | 1097 | prefix, yes_no(unit_check_gc(u)), |
9444b1f2 | 1098 | prefix, yes_no(unit_need_daemon_reload(u)), |
c2756a68 | 1099 | prefix, yes_no(u->transient), |
f5869324 | 1100 | prefix, yes_no(u->perpetual), |
4ad49000 LP |
1101 | prefix, strna(unit_slice_name(u)), |
1102 | prefix, strna(u->cgroup_path), | |
aae7e17f FB |
1103 | prefix, yes_no(u->cgroup_realized)); |
1104 | ||
1105 | if (u->cgroup_realized_mask != 0) { | |
1106 | _cleanup_free_ char *s = NULL; | |
1107 | (void) cg_mask_to_string(u->cgroup_realized_mask, &s); | |
1108 | fprintf(f, "%s\tCGroup mask: %s\n", prefix, strnull(s)); | |
1109 | } | |
1110 | if (u->cgroup_members_mask != 0) { | |
1111 | _cleanup_free_ char *s = NULL; | |
1112 | (void) cg_mask_to_string(u->cgroup_members_mask, &s); | |
1113 | fprintf(f, "%s\tCGroup members mask: %s\n", prefix, strnull(s)); | |
1114 | } | |
0301abf4 | 1115 | |
ac155bb8 | 1116 | SET_FOREACH(t, u->names, i) |
87f0e418 LP |
1117 | fprintf(f, "%s\tName: %s\n", prefix, t); |
1118 | ||
4b58153d LP |
1119 | if (!sd_id128_is_null(u->invocation_id)) |
1120 | fprintf(f, "%s\tInvocation ID: " SD_ID128_FORMAT_STR "\n", | |
1121 | prefix, SD_ID128_FORMAT_VAL(u->invocation_id)); | |
1122 | ||
49dbfa7b LP |
1123 | STRV_FOREACH(j, u->documentation) |
1124 | fprintf(f, "%s\tDocumentation: %s\n", prefix, *j); | |
1125 | ||
eeaedb7c LP |
1126 | following = unit_following(u); |
1127 | if (following) | |
ac155bb8 | 1128 | fprintf(f, "%s\tFollowing: %s\n", prefix, following->id); |
8fe914ec | 1129 | |
eeaedb7c LP |
1130 | r = unit_following_set(u, &following_set); |
1131 | if (r >= 0) { | |
1132 | Unit *other; | |
1133 | ||
1134 | SET_FOREACH(other, following_set, i) | |
1135 | fprintf(f, "%s\tFollowing Set Member: %s\n", prefix, other->id); | |
1136 | } | |
1137 | ||
ac155bb8 MS |
1138 | if (u->fragment_path) |
1139 | fprintf(f, "%s\tFragment Path: %s\n", prefix, u->fragment_path); | |
23a177ef | 1140 | |
1b64d026 LP |
1141 | if (u->source_path) |
1142 | fprintf(f, "%s\tSource Path: %s\n", prefix, u->source_path); | |
1143 | ||
ae7a7182 | 1144 | STRV_FOREACH(j, u->dropin_paths) |
2875e22b | 1145 | fprintf(f, "%s\tDropIn Path: %s\n", prefix, *j); |
ae7a7182 | 1146 | |
36c16a7c | 1147 | if (u->job_timeout != USEC_INFINITY) |
2fa4092c | 1148 | fprintf(f, "%s\tJob Timeout: %s\n", prefix, format_timespan(timespan, sizeof(timespan), u->job_timeout, 0)); |
faf919f1 | 1149 | |
87a47f99 LN |
1150 | if (u->job_timeout_action != EMERGENCY_ACTION_NONE) |
1151 | fprintf(f, "%s\tJob Timeout Action: %s\n", prefix, emergency_action_to_string(u->job_timeout_action)); | |
f189ab18 LP |
1152 | |
1153 | if (u->job_timeout_reboot_arg) | |
1154 | fprintf(f, "%s\tJob Timeout Reboot Argument: %s\n", prefix, u->job_timeout_reboot_arg); | |
1155 | ||
59fccdc5 LP |
1156 | condition_dump_list(u->conditions, f, prefix, condition_type_to_string); |
1157 | condition_dump_list(u->asserts, f, prefix, assert_type_to_string); | |
52661efd | 1158 | |
ac155bb8 | 1159 | if (dual_timestamp_is_set(&u->condition_timestamp)) |
2791a8f8 LP |
1160 | fprintf(f, |
1161 | "%s\tCondition Timestamp: %s\n" | |
1162 | "%s\tCondition Result: %s\n", | |
ac155bb8 MS |
1163 | prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->condition_timestamp.realtime)), |
1164 | prefix, yes_no(u->condition_result)); | |
2791a8f8 | 1165 | |
59fccdc5 LP |
1166 | if (dual_timestamp_is_set(&u->assert_timestamp)) |
1167 | fprintf(f, | |
1168 | "%s\tAssert Timestamp: %s\n" | |
1169 | "%s\tAssert Result: %s\n", | |
1170 | prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->assert_timestamp.realtime)), | |
1171 | prefix, yes_no(u->assert_result)); | |
1172 | ||
87f0e418 | 1173 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) { |
eef85c4a | 1174 | UnitDependencyInfo di; |
87f0e418 LP |
1175 | Unit *other; |
1176 | ||
eef85c4a LP |
1177 | HASHMAP_FOREACH_KEY(di.data, other, u->dependencies[d], i) { |
1178 | bool space = false; | |
1179 | ||
1180 | fprintf(f, "%s\t%s: %s (", prefix, unit_dependency_to_string(d), other->id); | |
1181 | ||
1182 | print_unit_dependency_mask(f, "origin", di.origin_mask, &space); | |
1183 | print_unit_dependency_mask(f, "destination", di.destination_mask, &space); | |
1184 | ||
1185 | fputs(")\n", f); | |
1186 | } | |
87f0e418 LP |
1187 | } |
1188 | ||
eef85c4a LP |
1189 | if (!hashmap_isempty(u->requires_mounts_for)) { |
1190 | UnitDependencyInfo di; | |
1191 | const char *path; | |
1192 | ||
1193 | HASHMAP_FOREACH_KEY(di.data, path, u->requires_mounts_for, i) { | |
1194 | bool space = false; | |
7c8fa05c | 1195 | |
eef85c4a | 1196 | fprintf(f, "%s\tRequiresMountsFor: %s (", prefix, path); |
7c8fa05c | 1197 | |
eef85c4a LP |
1198 | print_unit_dependency_mask(f, "origin", di.origin_mask, &space); |
1199 | print_unit_dependency_mask(f, "destination", di.destination_mask, &space); | |
1200 | ||
1201 | fputs(")\n", f); | |
1202 | } | |
7c8fa05c LP |
1203 | } |
1204 | ||
ac155bb8 | 1205 | if (u->load_state == UNIT_LOADED) { |
ab1f0633 | 1206 | |
b0650475 | 1207 | fprintf(f, |
a40eb732 | 1208 | "%s\tStopWhenUnneeded: %s\n" |
b5e9dba8 LP |
1209 | "%s\tRefuseManualStart: %s\n" |
1210 | "%s\tRefuseManualStop: %s\n" | |
222ae6a8 | 1211 | "%s\tDefaultDependencies: %s\n" |
d420282b | 1212 | "%s\tOnFailureJobMode: %s\n" |
36b4a7ba | 1213 | "%s\tIgnoreOnIsolate: %s\n", |
ac155bb8 MS |
1214 | prefix, yes_no(u->stop_when_unneeded), |
1215 | prefix, yes_no(u->refuse_manual_start), | |
1216 | prefix, yes_no(u->refuse_manual_stop), | |
1217 | prefix, yes_no(u->default_dependencies), | |
d420282b | 1218 | prefix, job_mode_to_string(u->on_failure_job_mode), |
36b4a7ba | 1219 | prefix, yes_no(u->ignore_on_isolate)); |
ac155bb8 | 1220 | |
23a177ef LP |
1221 | if (UNIT_VTABLE(u)->dump) |
1222 | UNIT_VTABLE(u)->dump(u, f, prefix2); | |
b0650475 | 1223 | |
ac155bb8 | 1224 | } else if (u->load_state == UNIT_MERGED) |
b0650475 LP |
1225 | fprintf(f, |
1226 | "%s\tMerged into: %s\n", | |
ac155bb8 MS |
1227 | prefix, u->merged_into->id); |
1228 | else if (u->load_state == UNIT_ERROR) | |
1229 | fprintf(f, "%s\tLoad Error Code: %s\n", prefix, strerror(-u->load_error)); | |
8821a00f | 1230 | |
05a98afd LP |
1231 | for (n = sd_bus_track_first(u->bus_track); n; n = sd_bus_track_next(u->bus_track)) |
1232 | fprintf(f, "%s\tBus Ref: %s\n", prefix, n); | |
87f0e418 | 1233 | |
ac155bb8 MS |
1234 | if (u->job) |
1235 | job_dump(u->job, f, prefix2); | |
87f0e418 | 1236 | |
e0209d83 MS |
1237 | if (u->nop_job) |
1238 | job_dump(u->nop_job, f, prefix2); | |
87f0e418 LP |
1239 | } |
1240 | ||
1241 | /* Common implementation for multiple backends */ | |
e537352b | 1242 | int unit_load_fragment_and_dropin(Unit *u) { |
23a177ef LP |
1243 | int r; |
1244 | ||
1245 | assert(u); | |
23a177ef | 1246 | |
e48614c4 | 1247 | /* Load a .{service,socket,...} file */ |
4ad49000 LP |
1248 | r = unit_load_fragment(u); |
1249 | if (r < 0) | |
23a177ef LP |
1250 | return r; |
1251 | ||
ac155bb8 | 1252 | if (u->load_state == UNIT_STUB) |
23a177ef LP |
1253 | return -ENOENT; |
1254 | ||
9e4ea9cc ZJS |
1255 | /* Load drop-in directory data. If u is an alias, we might be reloading the |
1256 | * target unit needlessly. But we cannot be sure which drops-ins have already | |
1257 | * been loaded and which not, at least without doing complicated book-keeping, | |
1258 | * so let's always reread all drop-ins. */ | |
1259 | return unit_load_dropin(unit_follow_merge(u)); | |
23a177ef LP |
1260 | } |
1261 | ||
1262 | /* Common implementation for multiple backends */ | |
e537352b | 1263 | int unit_load_fragment_and_dropin_optional(Unit *u) { |
23a177ef | 1264 | int r; |
87f0e418 LP |
1265 | |
1266 | assert(u); | |
1267 | ||
23a177ef LP |
1268 | /* Same as unit_load_fragment_and_dropin(), but whether |
1269 | * something can be loaded or not doesn't matter. */ | |
1270 | ||
1271 | /* Load a .service file */ | |
4ad49000 LP |
1272 | r = unit_load_fragment(u); |
1273 | if (r < 0) | |
87f0e418 LP |
1274 | return r; |
1275 | ||
ac155bb8 MS |
1276 | if (u->load_state == UNIT_STUB) |
1277 | u->load_state = UNIT_LOADED; | |
d46de8a1 | 1278 | |
9e4ea9cc ZJS |
1279 | /* Load drop-in directory data */ |
1280 | return unit_load_dropin(unit_follow_merge(u)); | |
87f0e418 LP |
1281 | } |
1282 | ||
bba34eed | 1283 | int unit_add_default_target_dependency(Unit *u, Unit *target) { |
98bc2000 LP |
1284 | assert(u); |
1285 | assert(target); | |
1286 | ||
ac155bb8 | 1287 | if (target->type != UNIT_TARGET) |
98bc2000 LP |
1288 | return 0; |
1289 | ||
35b8ca3a | 1290 | /* Only add the dependency if both units are loaded, so that |
bba34eed | 1291 | * that loop check below is reliable */ |
ac155bb8 MS |
1292 | if (u->load_state != UNIT_LOADED || |
1293 | target->load_state != UNIT_LOADED) | |
bba34eed LP |
1294 | return 0; |
1295 | ||
21256a2b LP |
1296 | /* If either side wants no automatic dependencies, then let's |
1297 | * skip this */ | |
ac155bb8 MS |
1298 | if (!u->default_dependencies || |
1299 | !target->default_dependencies) | |
21256a2b LP |
1300 | return 0; |
1301 | ||
98bc2000 | 1302 | /* Don't create loops */ |
eef85c4a | 1303 | if (hashmap_get(target->dependencies[UNIT_BEFORE], u)) |
98bc2000 LP |
1304 | return 0; |
1305 | ||
eef85c4a | 1306 | return unit_add_dependency(target, UNIT_AFTER, u, true, UNIT_DEPENDENCY_DEFAULT); |
98bc2000 LP |
1307 | } |
1308 | ||
e954c9cf | 1309 | static int unit_add_target_dependencies(Unit *u) { |
a016b922 | 1310 | |
21256a2b LP |
1311 | static const UnitDependency deps[] = { |
1312 | UNIT_REQUIRED_BY, | |
be7d9ff7 | 1313 | UNIT_REQUISITE_OF, |
21256a2b LP |
1314 | UNIT_WANTED_BY, |
1315 | UNIT_BOUND_BY | |
1316 | }; | |
1317 | ||
21256a2b | 1318 | unsigned k; |
db57f3c6 | 1319 | int r = 0; |
98bc2000 LP |
1320 | |
1321 | assert(u); | |
1322 | ||
eef85c4a LP |
1323 | for (k = 0; k < ELEMENTSOF(deps); k++) { |
1324 | Unit *target; | |
1325 | Iterator i; | |
1326 | void *v; | |
1327 | ||
1328 | HASHMAP_FOREACH_KEY(v, target, u->dependencies[deps[k]], i) { | |
a016b922 LP |
1329 | r = unit_add_default_target_dependency(u, target); |
1330 | if (r < 0) | |
21256a2b | 1331 | return r; |
a016b922 | 1332 | } |
eef85c4a | 1333 | } |
a016b922 | 1334 | |
e954c9cf LP |
1335 | return r; |
1336 | } | |
4ad49000 | 1337 | |
e954c9cf | 1338 | static int unit_add_slice_dependencies(Unit *u) { |
eef85c4a | 1339 | UnitDependencyMask mask; |
e954c9cf | 1340 | assert(u); |
b81884e7 | 1341 | |
35b7ff80 | 1342 | if (!UNIT_HAS_CGROUP_CONTEXT(u)) |
e954c9cf LP |
1343 | return 0; |
1344 | ||
eef85c4a LP |
1345 | /* Slice units are implicitly ordered against their parent slices (as this relationship is encoded in the |
1346 | name), while all other units are ordered based on configuration (as in their case Slice= configures the | |
1347 | relationship). */ | |
1348 | mask = u->type == UNIT_SLICE ? UNIT_DEPENDENCY_IMPLICIT : UNIT_DEPENDENCY_FILE; | |
1349 | ||
e954c9cf | 1350 | if (UNIT_ISSET(u->slice)) |
eef85c4a | 1351 | return unit_add_two_dependencies(u, UNIT_AFTER, UNIT_REQUIRES, UNIT_DEREF(u->slice), true, mask); |
e954c9cf | 1352 | |
8c8da0e0 | 1353 | if (unit_has_name(u, SPECIAL_ROOT_SLICE)) |
d1fab3fe ZJS |
1354 | return 0; |
1355 | ||
eef85c4a | 1356 | return unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_ROOT_SLICE, NULL, true, mask); |
98bc2000 LP |
1357 | } |
1358 | ||
e954c9cf | 1359 | static int unit_add_mount_dependencies(Unit *u) { |
eef85c4a LP |
1360 | UnitDependencyInfo di; |
1361 | const char *path; | |
1362 | Iterator i; | |
9588bc32 LP |
1363 | int r; |
1364 | ||
1365 | assert(u); | |
1366 | ||
eef85c4a LP |
1367 | HASHMAP_FOREACH_KEY(di.data, path, u->requires_mounts_for, i) { |
1368 | char prefix[strlen(path) + 1]; | |
9588bc32 | 1369 | |
eef85c4a | 1370 | PATH_FOREACH_PREFIX_MORE(prefix, path) { |
c7c89abb | 1371 | _cleanup_free_ char *p = NULL; |
9588bc32 LP |
1372 | Unit *m; |
1373 | ||
c7c89abb | 1374 | r = unit_name_from_path(prefix, ".mount", &p); |
9588bc32 LP |
1375 | if (r < 0) |
1376 | return r; | |
c7c89abb FB |
1377 | |
1378 | m = manager_get_unit(u->manager, p); | |
1379 | if (!m) { | |
1380 | /* Make sure to load the mount unit if | |
1381 | * it exists. If so the dependencies | |
1382 | * on this unit will be added later | |
1383 | * during the loading of the mount | |
1384 | * unit. */ | |
1385 | (void) manager_load_unit_prepare(u->manager, p, NULL, NULL, &m); | |
9588bc32 | 1386 | continue; |
c7c89abb | 1387 | } |
9588bc32 LP |
1388 | if (m == u) |
1389 | continue; | |
1390 | ||
1391 | if (m->load_state != UNIT_LOADED) | |
1392 | continue; | |
1393 | ||
eef85c4a | 1394 | r = unit_add_dependency(u, UNIT_AFTER, m, true, di.origin_mask); |
9588bc32 LP |
1395 | if (r < 0) |
1396 | return r; | |
1397 | ||
1398 | if (m->fragment_path) { | |
eef85c4a | 1399 | r = unit_add_dependency(u, UNIT_REQUIRES, m, true, di.origin_mask); |
9588bc32 LP |
1400 | if (r < 0) |
1401 | return r; | |
1402 | } | |
1403 | } | |
1404 | } | |
1405 | ||
1406 | return 0; | |
1407 | } | |
1408 | ||
95ae05c0 WC |
1409 | static int unit_add_startup_units(Unit *u) { |
1410 | CGroupContext *c; | |
5269eb6b | 1411 | int r; |
95ae05c0 WC |
1412 | |
1413 | c = unit_get_cgroup_context(u); | |
db785129 LP |
1414 | if (!c) |
1415 | return 0; | |
1416 | ||
d53d9474 | 1417 | if (c->startup_cpu_shares == CGROUP_CPU_SHARES_INVALID && |
13c31542 | 1418 | c->startup_io_weight == CGROUP_WEIGHT_INVALID && |
d53d9474 | 1419 | c->startup_blockio_weight == CGROUP_BLKIO_WEIGHT_INVALID) |
db785129 LP |
1420 | return 0; |
1421 | ||
5269eb6b LP |
1422 | r = set_ensure_allocated(&u->manager->startup_units, NULL); |
1423 | if (r < 0) | |
1424 | return r; | |
1425 | ||
756c09e6 | 1426 | return set_put(u->manager->startup_units, u); |
95ae05c0 WC |
1427 | } |
1428 | ||
87f0e418 LP |
1429 | int unit_load(Unit *u) { |
1430 | int r; | |
1431 | ||
1432 | assert(u); | |
1433 | ||
ac155bb8 | 1434 | if (u->in_load_queue) { |
71fda00f | 1435 | LIST_REMOVE(load_queue, u->manager->load_queue, u); |
ac155bb8 | 1436 | u->in_load_queue = false; |
87f0e418 LP |
1437 | } |
1438 | ||
ac155bb8 | 1439 | if (u->type == _UNIT_TYPE_INVALID) |
e537352b LP |
1440 | return -EINVAL; |
1441 | ||
ac155bb8 | 1442 | if (u->load_state != UNIT_STUB) |
87f0e418 LP |
1443 | return 0; |
1444 | ||
4f4afc88 LP |
1445 | if (u->transient_file) { |
1446 | r = fflush_and_check(u->transient_file); | |
1447 | if (r < 0) | |
1448 | goto fail; | |
1449 | ||
1450 | fclose(u->transient_file); | |
1451 | u->transient_file = NULL; | |
f9ba08fb | 1452 | |
f76707da | 1453 | u->fragment_mtime = now(CLOCK_REALTIME); |
4f4afc88 LP |
1454 | } |
1455 | ||
c2756a68 LP |
1456 | if (UNIT_VTABLE(u)->load) { |
1457 | r = UNIT_VTABLE(u)->load(u); | |
1458 | if (r < 0) | |
87f0e418 | 1459 | goto fail; |
c2756a68 | 1460 | } |
23a177ef | 1461 | |
ac155bb8 | 1462 | if (u->load_state == UNIT_STUB) { |
23a177ef LP |
1463 | r = -ENOENT; |
1464 | goto fail; | |
1465 | } | |
1466 | ||
7c8fa05c | 1467 | if (u->load_state == UNIT_LOADED) { |
c2756a68 | 1468 | |
e954c9cf LP |
1469 | r = unit_add_target_dependencies(u); |
1470 | if (r < 0) | |
1471 | goto fail; | |
1472 | ||
1473 | r = unit_add_slice_dependencies(u); | |
1474 | if (r < 0) | |
1475 | goto fail; | |
c2756a68 | 1476 | |
e954c9cf | 1477 | r = unit_add_mount_dependencies(u); |
7c8fa05c | 1478 | if (r < 0) |
c2756a68 | 1479 | goto fail; |
7c8fa05c | 1480 | |
95ae05c0 WC |
1481 | r = unit_add_startup_units(u); |
1482 | if (r < 0) | |
1483 | goto fail; | |
1484 | ||
eef85c4a | 1485 | if (u->on_failure_job_mode == JOB_ISOLATE && hashmap_size(u->dependencies[UNIT_ON_FAILURE]) > 1) { |
f2341e0a | 1486 | log_unit_error(u, "More than one OnFailure= dependencies specified but OnFailureJobMode=isolate set. Refusing."); |
c2756a68 LP |
1487 | r = -EINVAL; |
1488 | goto fail; | |
1489 | } | |
bc432dc7 | 1490 | |
a2df3ea4 MK |
1491 | if (u->job_running_timeout != USEC_INFINITY && u->job_running_timeout > u->job_timeout) |
1492 | log_unit_warning(u, "JobRunningTimeoutSec= is greater than JobTimeoutSec=, it has no effect."); | |
1493 | ||
bc432dc7 | 1494 | unit_update_cgroup_members_masks(u); |
f68319bb LP |
1495 | } |
1496 | ||
ac155bb8 | 1497 | assert((u->load_state != UNIT_MERGED) == !u->merged_into); |
23a177ef LP |
1498 | |
1499 | unit_add_to_dbus_queue(unit_follow_merge(u)); | |
701cc384 | 1500 | unit_add_to_gc_queue(u); |
87f0e418 | 1501 | |
87f0e418 LP |
1502 | return 0; |
1503 | ||
1504 | fail: | |
c2756a68 | 1505 | u->load_state = u->load_state == UNIT_STUB ? UNIT_NOT_FOUND : UNIT_ERROR; |
ac155bb8 | 1506 | u->load_error = r; |
c1e1601e | 1507 | unit_add_to_dbus_queue(u); |
9a46fc3b | 1508 | unit_add_to_gc_queue(u); |
23a177ef | 1509 | |
f2341e0a | 1510 | log_unit_debug_errno(u, r, "Failed to load configuration: %m"); |
23a177ef | 1511 | |
87f0e418 LP |
1512 | return r; |
1513 | } | |
1514 | ||
49365733 LP |
1515 | static bool unit_condition_test_list(Unit *u, Condition *first, const char *(*to_string)(ConditionType t)) { |
1516 | Condition *c; | |
1517 | int triggered = -1; | |
1518 | ||
1519 | assert(u); | |
1520 | assert(to_string); | |
1521 | ||
1522 | /* If the condition list is empty, then it is true */ | |
1523 | if (!first) | |
1524 | return true; | |
1525 | ||
1526 | /* Otherwise, if all of the non-trigger conditions apply and | |
1527 | * if any of the trigger conditions apply (unless there are | |
1528 | * none) we return true */ | |
1529 | LIST_FOREACH(conditions, c, first) { | |
1530 | int r; | |
1531 | ||
1532 | r = condition_test(c); | |
1533 | if (r < 0) | |
f2341e0a LP |
1534 | log_unit_warning(u, |
1535 | "Couldn't determine result for %s=%s%s%s, assuming failed: %m", | |
49365733 LP |
1536 | to_string(c->type), |
1537 | c->trigger ? "|" : "", | |
1538 | c->negate ? "!" : "", | |
f2341e0a | 1539 | c->parameter); |
49365733 | 1540 | else |
f2341e0a LP |
1541 | log_unit_debug(u, |
1542 | "%s=%s%s%s %s.", | |
49365733 LP |
1543 | to_string(c->type), |
1544 | c->trigger ? "|" : "", | |
1545 | c->negate ? "!" : "", | |
1546 | c->parameter, | |
f2341e0a | 1547 | condition_result_to_string(c->result)); |
49365733 LP |
1548 | |
1549 | if (!c->trigger && r <= 0) | |
1550 | return false; | |
1551 | ||
1552 | if (c->trigger && triggered <= 0) | |
1553 | triggered = r > 0; | |
1554 | } | |
1555 | ||
1556 | return triggered != 0; | |
1557 | } | |
1558 | ||
9588bc32 | 1559 | static bool unit_condition_test(Unit *u) { |
90bbc946 LP |
1560 | assert(u); |
1561 | ||
ac155bb8 | 1562 | dual_timestamp_get(&u->condition_timestamp); |
49365733 | 1563 | u->condition_result = unit_condition_test_list(u, u->conditions, condition_type_to_string); |
90bbc946 | 1564 | |
ac155bb8 | 1565 | return u->condition_result; |
90bbc946 LP |
1566 | } |
1567 | ||
59fccdc5 LP |
1568 | static bool unit_assert_test(Unit *u) { |
1569 | assert(u); | |
1570 | ||
1571 | dual_timestamp_get(&u->assert_timestamp); | |
49365733 | 1572 | u->assert_result = unit_condition_test_list(u, u->asserts, assert_type_to_string); |
59fccdc5 LP |
1573 | |
1574 | return u->assert_result; | |
1575 | } | |
1576 | ||
df446f96 LP |
1577 | void unit_status_printf(Unit *u, const char *status, const char *unit_status_msg_format) { |
1578 | DISABLE_WARNING_FORMAT_NONLITERAL; | |
1579 | manager_status_printf(u->manager, STATUS_TYPE_NORMAL, status, unit_status_msg_format, unit_description(u)); | |
1580 | REENABLE_WARNING; | |
1581 | } | |
1582 | ||
44a6b1b6 | 1583 | _pure_ static const char* unit_get_status_message_format(Unit *u, JobType t) { |
877d54e9 | 1584 | const char *format; |
a85ca902 | 1585 | const UnitStatusMessageFormats *format_table; |
877d54e9 LP |
1586 | |
1587 | assert(u); | |
df446f96 | 1588 | assert(IN_SET(t, JOB_START, JOB_STOP, JOB_RELOAD)); |
877d54e9 | 1589 | |
b5bf308b | 1590 | if (t != JOB_RELOAD) { |
a85ca902 MS |
1591 | format_table = &UNIT_VTABLE(u)->status_message_formats; |
1592 | if (format_table) { | |
1593 | format = format_table->starting_stopping[t == JOB_STOP]; | |
1594 | if (format) | |
1595 | return format; | |
1596 | } | |
1597 | } | |
877d54e9 LP |
1598 | |
1599 | /* Return generic strings */ | |
1600 | if (t == JOB_START) | |
1601 | return "Starting %s."; | |
1602 | else if (t == JOB_STOP) | |
1603 | return "Stopping %s."; | |
b5bf308b | 1604 | else |
877d54e9 | 1605 | return "Reloading %s."; |
877d54e9 LP |
1606 | } |
1607 | ||
1608 | static void unit_status_print_starting_stopping(Unit *u, JobType t) { | |
1609 | const char *format; | |
1610 | ||
1611 | assert(u); | |
1612 | ||
df446f96 LP |
1613 | /* Reload status messages have traditionally not been printed to console. */ |
1614 | if (!IN_SET(t, JOB_START, JOB_STOP)) | |
1615 | return; | |
1616 | ||
877d54e9 | 1617 | format = unit_get_status_message_format(u, t); |
c6918296 | 1618 | |
bcfce235 | 1619 | DISABLE_WARNING_FORMAT_NONLITERAL; |
49b1d377 | 1620 | unit_status_printf(u, "", format); |
bcfce235 | 1621 | REENABLE_WARNING; |
c6918296 MS |
1622 | } |
1623 | ||
877d54e9 | 1624 | static void unit_status_log_starting_stopping_reloading(Unit *u, JobType t) { |
2b044526 | 1625 | const char *format, *mid; |
877d54e9 | 1626 | char buf[LINE_MAX]; |
877d54e9 LP |
1627 | |
1628 | assert(u); | |
1629 | ||
df446f96 | 1630 | if (!IN_SET(t, JOB_START, JOB_STOP, JOB_RELOAD)) |
877d54e9 LP |
1631 | return; |
1632 | ||
81270860 LP |
1633 | if (log_on_console()) |
1634 | return; | |
1635 | ||
877d54e9 LP |
1636 | /* We log status messages for all units and all operations. */ |
1637 | ||
a85ca902 | 1638 | format = unit_get_status_message_format(u, t); |
877d54e9 | 1639 | |
bcfce235 | 1640 | DISABLE_WARNING_FORMAT_NONLITERAL; |
e68eedbb | 1641 | snprintf(buf, sizeof buf, format, unit_description(u)); |
bcfce235 | 1642 | REENABLE_WARNING; |
877d54e9 | 1643 | |
2b044526 ZJS |
1644 | mid = t == JOB_START ? "MESSAGE_ID=" SD_MESSAGE_UNIT_STARTING_STR : |
1645 | t == JOB_STOP ? "MESSAGE_ID=" SD_MESSAGE_UNIT_STOPPING_STR : | |
1646 | "MESSAGE_ID=" SD_MESSAGE_UNIT_RELOADING_STR; | |
877d54e9 | 1647 | |
f2341e0a LP |
1648 | /* Note that we deliberately use LOG_MESSAGE() instead of |
1649 | * LOG_UNIT_MESSAGE() here, since this is supposed to mimic | |
1650 | * closely what is written to screen using the status output, | |
1651 | * which is supposed the highest level, friendliest output | |
1652 | * possible, which means we should avoid the low-level unit | |
1653 | * name. */ | |
1654 | log_struct(LOG_INFO, | |
f2341e0a | 1655 | LOG_MESSAGE("%s", buf), |
ba360bb0 | 1656 | LOG_UNIT_ID(u), |
f1c50bec | 1657 | LOG_UNIT_INVOCATION_ID(u), |
ba360bb0 | 1658 | mid, |
f2341e0a | 1659 | NULL); |
877d54e9 | 1660 | } |
877d54e9 | 1661 | |
d1a34ae9 | 1662 | void unit_status_emit_starting_stopping_reloading(Unit *u, JobType t) { |
df446f96 LP |
1663 | assert(u); |
1664 | assert(t >= 0); | |
1665 | assert(t < _JOB_TYPE_MAX); | |
d1a34ae9 MS |
1666 | |
1667 | unit_status_log_starting_stopping_reloading(u, t); | |
df446f96 | 1668 | unit_status_print_starting_stopping(u, t); |
d1a34ae9 MS |
1669 | } |
1670 | ||
07299350 | 1671 | int unit_start_limit_test(Unit *u) { |
6bf0f408 LP |
1672 | assert(u); |
1673 | ||
1674 | if (ratelimit_test(&u->start_limit)) { | |
1675 | u->start_limit_hit = false; | |
1676 | return 0; | |
1677 | } | |
1678 | ||
1679 | log_unit_warning(u, "Start request repeated too quickly."); | |
1680 | u->start_limit_hit = true; | |
1681 | ||
87a47f99 | 1682 | return emergency_action(u->manager, u->start_limit_action, u->reboot_arg, "unit failed"); |
6bf0f408 LP |
1683 | } |
1684 | ||
c891efaf | 1685 | bool unit_shall_confirm_spawn(Unit *u) { |
631b676b | 1686 | assert(u); |
c891efaf FB |
1687 | |
1688 | if (manager_is_confirm_spawn_disabled(u->manager)) | |
1689 | return false; | |
1690 | ||
1691 | /* For some reasons units remaining in the same process group | |
1692 | * as PID 1 fail to acquire the console even if it's not used | |
1693 | * by any process. So skip the confirmation question for them. */ | |
1694 | return !unit_get_exec_context(u)->same_pgrp; | |
1695 | } | |
1696 | ||
631b676b LP |
1697 | static bool unit_verify_deps(Unit *u) { |
1698 | Unit *other; | |
1699 | Iterator j; | |
eef85c4a | 1700 | void *v; |
631b676b LP |
1701 | |
1702 | assert(u); | |
1703 | ||
1704 | /* Checks whether all BindsTo= dependencies of this unit are fulfilled — if they are also combined with | |
1705 | * After=. We do not check Requires= or Requisite= here as they only should have an effect on the job | |
1706 | * processing, but do not have any effect afterwards. We don't check BindsTo= dependencies that are not used in | |
1707 | * conjunction with After= as for them any such check would make things entirely racy. */ | |
1708 | ||
eef85c4a | 1709 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_BINDS_TO], j) { |
631b676b | 1710 | |
eef85c4a | 1711 | if (!hashmap_contains(u->dependencies[UNIT_AFTER], other)) |
631b676b LP |
1712 | continue; |
1713 | ||
1714 | if (!UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(other))) { | |
1715 | log_unit_notice(u, "Bound to unit %s, but unit isn't active.", other->id); | |
1716 | return false; | |
1717 | } | |
1718 | } | |
1719 | ||
1720 | return true; | |
1721 | } | |
1722 | ||
87f0e418 | 1723 | /* Errors: |
6bf0f408 LP |
1724 | * -EBADR: This unit type does not support starting. |
1725 | * -EALREADY: Unit is already started. | |
1726 | * -EAGAIN: An operation is already in progress. Retry later. | |
1727 | * -ECANCELED: Too many requests for now. | |
1728 | * -EPROTO: Assert failed | |
1729 | * -EINVAL: Unit not loaded | |
1730 | * -EOPNOTSUPP: Unit type not supported | |
631b676b | 1731 | * -ENOLINK: The necessary dependencies are not fulfilled. |
87f0e418 LP |
1732 | */ |
1733 | int unit_start(Unit *u) { | |
1734 | UnitActiveState state; | |
92ab323c | 1735 | Unit *following; |
87f0e418 LP |
1736 | |
1737 | assert(u); | |
1738 | ||
a82e5507 LP |
1739 | /* If this is already started, then this will succeed. Note |
1740 | * that this will even succeed if this unit is not startable | |
1741 | * by the user. This is relied on to detect when we need to | |
1742 | * wait for units and when waiting is finished. */ | |
87f0e418 LP |
1743 | state = unit_active_state(u); |
1744 | if (UNIT_IS_ACTIVE_OR_RELOADING(state)) | |
1745 | return -EALREADY; | |
1746 | ||
6bf0f408 LP |
1747 | /* Units that aren't loaded cannot be started */ |
1748 | if (u->load_state != UNIT_LOADED) | |
1749 | return -EINVAL; | |
1750 | ||
a82e5507 LP |
1751 | /* If the conditions failed, don't do anything at all. If we |
1752 | * already are activating this call might still be useful to | |
1753 | * speed up activation in case there is some hold-off time, | |
1754 | * but we don't want to recheck the condition in that case. */ | |
1755 | if (state != UNIT_ACTIVATING && | |
1756 | !unit_condition_test(u)) { | |
f2341e0a | 1757 | log_unit_debug(u, "Starting requested but condition failed. Not starting unit."); |
52661efd LP |
1758 | return -EALREADY; |
1759 | } | |
1760 | ||
59fccdc5 LP |
1761 | /* If the asserts failed, fail the entire job */ |
1762 | if (state != UNIT_ACTIVATING && | |
1763 | !unit_assert_test(u)) { | |
f2341e0a | 1764 | log_unit_notice(u, "Starting requested but asserts failed."); |
59fccdc5 LP |
1765 | return -EPROTO; |
1766 | } | |
1767 | ||
d11a7645 LP |
1768 | /* Units of types that aren't supported cannot be |
1769 | * started. Note that we do this test only after the condition | |
1770 | * checks, so that we rather return condition check errors | |
1771 | * (which are usually not considered a true failure) than "not | |
1772 | * supported" errors (which are considered a failure). | |
1773 | */ | |
1774 | if (!unit_supported(u)) | |
1775 | return -EOPNOTSUPP; | |
1776 | ||
631b676b LP |
1777 | /* Let's make sure that the deps really are in order before we start this. Normally the job engine should have |
1778 | * taken care of this already, but let's check this here again. After all, our dependencies might not be in | |
1779 | * effect anymore, due to a reload or due to a failed condition. */ | |
1780 | if (!unit_verify_deps(u)) | |
1781 | return -ENOLINK; | |
1782 | ||
92ab323c | 1783 | /* Forward to the main object, if we aren't it. */ |
52990c2e ZJS |
1784 | following = unit_following(u); |
1785 | if (following) { | |
f2341e0a | 1786 | log_unit_debug(u, "Redirecting start request from %s to %s.", u->id, following->id); |
92ab323c LP |
1787 | return unit_start(following); |
1788 | } | |
1789 | ||
1790 | /* If it is stopped, but we cannot start it, then fail */ | |
1791 | if (!UNIT_VTABLE(u)->start) | |
1792 | return -EBADR; | |
1793 | ||
87f0e418 LP |
1794 | /* We don't suppress calls to ->start() here when we are |
1795 | * already starting, to allow this request to be used as a | |
1796 | * "hurry up" call, for example when the unit is in some "auto | |
1797 | * restart" state where it waits for a holdoff timer to elapse | |
1798 | * before it will start again. */ | |
1799 | ||
c1e1601e | 1800 | unit_add_to_dbus_queue(u); |
9e58ff9c | 1801 | |
d1a34ae9 | 1802 | return UNIT_VTABLE(u)->start(u); |
87f0e418 LP |
1803 | } |
1804 | ||
1805 | bool unit_can_start(Unit *u) { | |
1806 | assert(u); | |
1807 | ||
8ff4d2ab LP |
1808 | if (u->load_state != UNIT_LOADED) |
1809 | return false; | |
1810 | ||
1811 | if (!unit_supported(u)) | |
1812 | return false; | |
1813 | ||
87f0e418 LP |
1814 | return !!UNIT_VTABLE(u)->start; |
1815 | } | |
1816 | ||
2528a7a6 LP |
1817 | bool unit_can_isolate(Unit *u) { |
1818 | assert(u); | |
1819 | ||
1820 | return unit_can_start(u) && | |
ac155bb8 | 1821 | u->allow_isolate; |
2528a7a6 LP |
1822 | } |
1823 | ||
87f0e418 LP |
1824 | /* Errors: |
1825 | * -EBADR: This unit type does not support stopping. | |
1826 | * -EALREADY: Unit is already stopped. | |
1827 | * -EAGAIN: An operation is already in progress. Retry later. | |
1828 | */ | |
1829 | int unit_stop(Unit *u) { | |
1830 | UnitActiveState state; | |
92ab323c | 1831 | Unit *following; |
87f0e418 LP |
1832 | |
1833 | assert(u); | |
1834 | ||
87f0e418 | 1835 | state = unit_active_state(u); |
fdf20a31 | 1836 | if (UNIT_IS_INACTIVE_OR_FAILED(state)) |
87f0e418 LP |
1837 | return -EALREADY; |
1838 | ||
0faacd47 LP |
1839 | following = unit_following(u); |
1840 | if (following) { | |
f2341e0a | 1841 | log_unit_debug(u, "Redirecting stop request from %s to %s.", u->id, following->id); |
92ab323c LP |
1842 | return unit_stop(following); |
1843 | } | |
1844 | ||
7898b0cf LP |
1845 | if (!UNIT_VTABLE(u)->stop) |
1846 | return -EBADR; | |
1847 | ||
c1e1601e | 1848 | unit_add_to_dbus_queue(u); |
9e58ff9c | 1849 | |
d1a34ae9 | 1850 | return UNIT_VTABLE(u)->stop(u); |
87f0e418 LP |
1851 | } |
1852 | ||
f5869324 LP |
1853 | bool unit_can_stop(Unit *u) { |
1854 | assert(u); | |
1855 | ||
1856 | if (!unit_supported(u)) | |
1857 | return false; | |
1858 | ||
1859 | if (u->perpetual) | |
1860 | return false; | |
1861 | ||
1862 | return !!UNIT_VTABLE(u)->stop; | |
1863 | } | |
1864 | ||
87f0e418 LP |
1865 | /* Errors: |
1866 | * -EBADR: This unit type does not support reloading. | |
1867 | * -ENOEXEC: Unit is not started. | |
1868 | * -EAGAIN: An operation is already in progress. Retry later. | |
1869 | */ | |
1870 | int unit_reload(Unit *u) { | |
1871 | UnitActiveState state; | |
92ab323c | 1872 | Unit *following; |
87f0e418 LP |
1873 | |
1874 | assert(u); | |
1875 | ||
ac155bb8 | 1876 | if (u->load_state != UNIT_LOADED) |
6124958c LP |
1877 | return -EINVAL; |
1878 | ||
87f0e418 LP |
1879 | if (!unit_can_reload(u)) |
1880 | return -EBADR; | |
1881 | ||
1882 | state = unit_active_state(u); | |
e364ad06 | 1883 | if (state == UNIT_RELOADING) |
87f0e418 LP |
1884 | return -EALREADY; |
1885 | ||
6a371e23 | 1886 | if (state != UNIT_ACTIVE) { |
f2341e0a | 1887 | log_unit_warning(u, "Unit cannot be reloaded because it is inactive."); |
87f0e418 | 1888 | return -ENOEXEC; |
6a371e23 | 1889 | } |
87f0e418 | 1890 | |
e48614c4 ZJS |
1891 | following = unit_following(u); |
1892 | if (following) { | |
f2341e0a | 1893 | log_unit_debug(u, "Redirecting reload request from %s to %s.", u->id, following->id); |
92ab323c LP |
1894 | return unit_reload(following); |
1895 | } | |
1896 | ||
c1e1601e | 1897 | unit_add_to_dbus_queue(u); |
82a2b6bb | 1898 | |
f54bcca5 JR |
1899 | if (!UNIT_VTABLE(u)->reload) { |
1900 | /* Unit doesn't have a reload function, but we need to propagate the reload anyway */ | |
1901 | unit_notify(u, unit_active_state(u), unit_active_state(u), true); | |
1902 | return 0; | |
1903 | } | |
1904 | ||
d1a34ae9 | 1905 | return UNIT_VTABLE(u)->reload(u); |
87f0e418 LP |
1906 | } |
1907 | ||
1908 | bool unit_can_reload(Unit *u) { | |
1909 | assert(u); | |
1910 | ||
f54bcca5 JR |
1911 | if (UNIT_VTABLE(u)->can_reload) |
1912 | return UNIT_VTABLE(u)->can_reload(u); | |
87f0e418 | 1913 | |
eef85c4a | 1914 | if (!hashmap_isempty(u->dependencies[UNIT_PROPAGATES_RELOAD_TO])) |
87f0e418 LP |
1915 | return true; |
1916 | ||
f54bcca5 | 1917 | return UNIT_VTABLE(u)->reload; |
87f0e418 LP |
1918 | } |
1919 | ||
b4a16b7b | 1920 | static void unit_check_unneeded(Unit *u) { |
be7d9ff7 | 1921 | |
4afd3348 | 1922 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
4bd29fe5 | 1923 | |
be7d9ff7 LP |
1924 | static const UnitDependency needed_dependencies[] = { |
1925 | UNIT_REQUIRED_BY, | |
084918ba | 1926 | UNIT_REQUISITE_OF, |
be7d9ff7 LP |
1927 | UNIT_WANTED_BY, |
1928 | UNIT_BOUND_BY, | |
1929 | }; | |
1930 | ||
be7d9ff7 LP |
1931 | unsigned j; |
1932 | int r; | |
f3bff0eb LP |
1933 | |
1934 | assert(u); | |
1935 | ||
1936 | /* If this service shall be shut down when unneeded then do | |
1937 | * so. */ | |
1938 | ||
ac155bb8 | 1939 | if (!u->stop_when_unneeded) |
f3bff0eb LP |
1940 | return; |
1941 | ||
1942 | if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) | |
1943 | return; | |
1944 | ||
eef85c4a LP |
1945 | for (j = 0; j < ELEMENTSOF(needed_dependencies); j++) { |
1946 | Unit *other; | |
1947 | Iterator i; | |
1948 | void *v; | |
1949 | ||
1950 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[needed_dependencies[j]], i) | |
be7d9ff7 LP |
1951 | if (unit_active_or_pending(other)) |
1952 | return; | |
eef85c4a | 1953 | } |
b81884e7 | 1954 | |
595bfe7d | 1955 | /* If stopping a unit fails continuously we might enter a stop |
bea355da LP |
1956 | * loop here, hence stop acting on the service being |
1957 | * unnecessary after a while. */ | |
67bfdc97 | 1958 | if (!ratelimit_test(&u->auto_stop_ratelimit)) { |
bea355da LP |
1959 | log_unit_warning(u, "Unit not needed anymore, but not stopping since we tried this too often recently."); |
1960 | return; | |
1961 | } | |
1962 | ||
f2341e0a | 1963 | log_unit_info(u, "Unit not needed anymore. Stopping."); |
f3bff0eb LP |
1964 | |
1965 | /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */ | |
4bd29fe5 | 1966 | r = manager_add_job(u->manager, JOB_STOP, u, JOB_FAIL, &error, NULL); |
be7d9ff7 | 1967 | if (r < 0) |
4bd29fe5 | 1968 | log_unit_warning_errno(u, r, "Failed to enqueue stop job, ignoring: %s", bus_error_message(&error, r)); |
f3bff0eb LP |
1969 | } |
1970 | ||
ff502445 | 1971 | static void unit_check_binds_to(Unit *u) { |
4afd3348 | 1972 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
ff502445 LP |
1973 | bool stop = false; |
1974 | Unit *other; | |
1975 | Iterator i; | |
eef85c4a | 1976 | void *v; |
67bfdc97 | 1977 | int r; |
ff502445 LP |
1978 | |
1979 | assert(u); | |
1980 | ||
1981 | if (u->job) | |
1982 | return; | |
1983 | ||
1984 | if (unit_active_state(u) != UNIT_ACTIVE) | |
1985 | return; | |
1986 | ||
eef85c4a | 1987 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_BINDS_TO], i) { |
ff502445 LP |
1988 | if (other->job) |
1989 | continue; | |
13ddc3fc ZJS |
1990 | |
1991 | if (!other->coldplugged) | |
1992 | /* We might yet create a job for the other unit… */ | |
1993 | continue; | |
ff502445 LP |
1994 | |
1995 | if (!UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other))) | |
1996 | continue; | |
1997 | ||
1998 | stop = true; | |
98f738b6 | 1999 | break; |
ff502445 LP |
2000 | } |
2001 | ||
2002 | if (!stop) | |
2003 | return; | |
2004 | ||
595bfe7d | 2005 | /* If stopping a unit fails continuously we might enter a stop |
67bfdc97 LP |
2006 | * loop here, hence stop acting on the service being |
2007 | * unnecessary after a while. */ | |
2008 | if (!ratelimit_test(&u->auto_stop_ratelimit)) { | |
2009 | log_unit_warning(u, "Unit is bound to inactive unit %s, but not stopping since we tried this too often recently.", other->id); | |
2010 | return; | |
2011 | } | |
2012 | ||
98f738b6 | 2013 | assert(other); |
f2341e0a | 2014 | log_unit_info(u, "Unit is bound to inactive unit %s. Stopping, too.", other->id); |
ff502445 LP |
2015 | |
2016 | /* A unit we need to run is gone. Sniff. Let's stop this. */ | |
4bd29fe5 | 2017 | r = manager_add_job(u->manager, JOB_STOP, u, JOB_FAIL, &error, NULL); |
67bfdc97 | 2018 | if (r < 0) |
4bd29fe5 | 2019 | log_unit_warning_errno(u, r, "Failed to enqueue stop job, ignoring: %s", bus_error_message(&error, r)); |
ff502445 LP |
2020 | } |
2021 | ||
87f0e418 LP |
2022 | static void retroactively_start_dependencies(Unit *u) { |
2023 | Iterator i; | |
2024 | Unit *other; | |
eef85c4a | 2025 | void *v; |
87f0e418 LP |
2026 | |
2027 | assert(u); | |
2028 | assert(UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))); | |
2029 | ||
eef85c4a LP |
2030 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_REQUIRES], i) |
2031 | if (!hashmap_get(u->dependencies[UNIT_AFTER], other) && | |
b81884e7 | 2032 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
4bd29fe5 | 2033 | manager_add_job(u->manager, JOB_START, other, JOB_REPLACE, NULL, NULL); |
b81884e7 | 2034 | |
eef85c4a LP |
2035 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_BINDS_TO], i) |
2036 | if (!hashmap_get(u->dependencies[UNIT_AFTER], other) && | |
b81884e7 | 2037 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
4bd29fe5 | 2038 | manager_add_job(u->manager, JOB_START, other, JOB_REPLACE, NULL, NULL); |
87f0e418 | 2039 | |
eef85c4a LP |
2040 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_WANTS], i) |
2041 | if (!hashmap_get(u->dependencies[UNIT_AFTER], other) && | |
b81884e7 | 2042 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
4bd29fe5 | 2043 | manager_add_job(u->manager, JOB_START, other, JOB_FAIL, NULL, NULL); |
87f0e418 | 2044 | |
eef85c4a | 2045 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_CONFLICTS], i) |
b81884e7 | 2046 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
4bd29fe5 | 2047 | manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, NULL, NULL); |
69dd2852 | 2048 | |
eef85c4a | 2049 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_CONFLICTED_BY], i) |
b81884e7 | 2050 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
4bd29fe5 | 2051 | manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, NULL, NULL); |
87f0e418 LP |
2052 | } |
2053 | ||
2054 | static void retroactively_stop_dependencies(Unit *u) { | |
87f0e418 | 2055 | Unit *other; |
eef85c4a LP |
2056 | Iterator i; |
2057 | void *v; | |
87f0e418 LP |
2058 | |
2059 | assert(u); | |
2060 | assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))); | |
2061 | ||
b81884e7 | 2062 | /* Pull down units which are bound to us recursively if enabled */ |
eef85c4a | 2063 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_BOUND_BY], i) |
b81884e7 | 2064 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
4bd29fe5 | 2065 | manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, NULL, NULL); |
cd0504d0 MS |
2066 | } |
2067 | ||
2068 | static void check_unneeded_dependencies(Unit *u) { | |
cd0504d0 | 2069 | Unit *other; |
eef85c4a LP |
2070 | Iterator i; |
2071 | void *v; | |
cd0504d0 MS |
2072 | |
2073 | assert(u); | |
2074 | assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))); | |
f3bff0eb LP |
2075 | |
2076 | /* Garbage collect services that might not be needed anymore, if enabled */ | |
eef85c4a | 2077 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_REQUIRES], i) |
87f0e418 | 2078 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 2079 | unit_check_unneeded(other); |
eef85c4a | 2080 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_WANTS], i) |
f3bff0eb | 2081 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 2082 | unit_check_unneeded(other); |
eef85c4a | 2083 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_REQUISITE], i) |
f3bff0eb | 2084 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 2085 | unit_check_unneeded(other); |
eef85c4a | 2086 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_BINDS_TO], i) |
b81884e7 LP |
2087 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
2088 | unit_check_unneeded(other); | |
87f0e418 LP |
2089 | } |
2090 | ||
3ecaa09b | 2091 | void unit_start_on_failure(Unit *u) { |
c0daa706 LP |
2092 | Unit *other; |
2093 | Iterator i; | |
eef85c4a | 2094 | void *v; |
c0daa706 LP |
2095 | |
2096 | assert(u); | |
2097 | ||
eef85c4a | 2098 | if (hashmap_size(u->dependencies[UNIT_ON_FAILURE]) <= 0) |
222ae6a8 LP |
2099 | return; |
2100 | ||
f2341e0a | 2101 | log_unit_info(u, "Triggering OnFailure= dependencies."); |
222ae6a8 | 2102 | |
eef85c4a | 2103 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_ON_FAILURE], i) { |
222ae6a8 LP |
2104 | int r; |
2105 | ||
4bd29fe5 | 2106 | r = manager_add_job(u->manager, JOB_START, other, u->on_failure_job_mode, NULL, NULL); |
c1b6628d | 2107 | if (r < 0) |
f2341e0a | 2108 | log_unit_error_errno(u, r, "Failed to enqueue OnFailure= job: %m"); |
222ae6a8 | 2109 | } |
c0daa706 LP |
2110 | } |
2111 | ||
3ecaa09b LP |
2112 | void unit_trigger_notify(Unit *u) { |
2113 | Unit *other; | |
2114 | Iterator i; | |
eef85c4a | 2115 | void *v; |
3ecaa09b LP |
2116 | |
2117 | assert(u); | |
2118 | ||
eef85c4a | 2119 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_TRIGGERED_BY], i) |
3ecaa09b LP |
2120 | if (UNIT_VTABLE(other)->trigger_notify) |
2121 | UNIT_VTABLE(other)->trigger_notify(other, u); | |
2122 | } | |
2123 | ||
915b1d01 LP |
2124 | static int unit_log_resources(Unit *u) { |
2125 | ||
2126 | struct iovec iovec[1 + _CGROUP_IP_ACCOUNTING_METRIC_MAX + 4]; | |
2127 | size_t n_message_parts = 0, n_iovec = 0; | |
2128 | char* message_parts[3 + 1], *t; | |
2129 | nsec_t nsec = NSEC_INFINITY; | |
2130 | CGroupIPAccountingMetric m; | |
2131 | size_t i; | |
2132 | int r; | |
2133 | const char* const ip_fields[_CGROUP_IP_ACCOUNTING_METRIC_MAX] = { | |
2134 | [CGROUP_IP_INGRESS_BYTES] = "IP_METRIC_INGRESS_BYTES", | |
2135 | [CGROUP_IP_INGRESS_PACKETS] = "IP_METRIC_INGRESS_PACKETS", | |
2136 | [CGROUP_IP_EGRESS_BYTES] = "IP_METRIC_EGRESS_BYTES", | |
2137 | [CGROUP_IP_EGRESS_PACKETS] = "IP_METRIC_EGRESS_PACKETS", | |
2138 | }; | |
2139 | ||
2140 | assert(u); | |
2141 | ||
2142 | /* Invoked whenever a unit enters failed or dead state. Logs information about consumed resources if resource | |
2143 | * accounting was enabled for a unit. It does this in two ways: a friendly human readable string with reduced | |
2144 | * information and the complete data in structured fields. */ | |
2145 | ||
2146 | (void) unit_get_cpu_usage(u, &nsec); | |
2147 | if (nsec != NSEC_INFINITY) { | |
2148 | char buf[FORMAT_TIMESPAN_MAX] = ""; | |
2149 | ||
2150 | /* Format the CPU time for inclusion in the structured log message */ | |
2151 | if (asprintf(&t, "CPU_USAGE_NSEC=%" PRIu64, nsec) < 0) { | |
2152 | r = log_oom(); | |
2153 | goto finish; | |
2154 | } | |
2155 | iovec[n_iovec++] = IOVEC_MAKE_STRING(t); | |
2156 | ||
2157 | /* Format the CPU time for inclusion in the human language message string */ | |
2158 | format_timespan(buf, sizeof(buf), nsec / NSEC_PER_USEC, USEC_PER_MSEC); | |
2159 | t = strjoin(n_message_parts > 0 ? "consumed " : "Consumed ", buf, " CPU time"); | |
2160 | if (!t) { | |
2161 | r = log_oom(); | |
2162 | goto finish; | |
2163 | } | |
2164 | ||
2165 | message_parts[n_message_parts++] = t; | |
2166 | } | |
2167 | ||
2168 | for (m = 0; m < _CGROUP_IP_ACCOUNTING_METRIC_MAX; m++) { | |
2169 | char buf[FORMAT_BYTES_MAX] = ""; | |
2170 | uint64_t value = UINT64_MAX; | |
2171 | ||
2172 | assert(ip_fields[m]); | |
2173 | ||
2174 | (void) unit_get_ip_accounting(u, m, &value); | |
2175 | if (value == UINT64_MAX) | |
2176 | continue; | |
2177 | ||
2178 | /* Format IP accounting data for inclusion in the structured log message */ | |
2179 | if (asprintf(&t, "%s=%" PRIu64, ip_fields[m], value) < 0) { | |
2180 | r = log_oom(); | |
2181 | goto finish; | |
2182 | } | |
2183 | iovec[n_iovec++] = IOVEC_MAKE_STRING(t); | |
2184 | ||
2185 | /* Format the IP accounting data for inclusion in the human language message string, but only for the | |
2186 | * bytes counters (and not for the packets counters) */ | |
2187 | if (m == CGROUP_IP_INGRESS_BYTES) | |
2188 | t = strjoin(n_message_parts > 0 ? "received " : "Received ", | |
2189 | format_bytes(buf, sizeof(buf), value), | |
2190 | " IP traffic"); | |
2191 | else if (m == CGROUP_IP_EGRESS_BYTES) | |
2192 | t = strjoin(n_message_parts > 0 ? "sent " : "Sent ", | |
2193 | format_bytes(buf, sizeof(buf), value), | |
2194 | " IP traffic"); | |
2195 | else | |
2196 | continue; | |
2197 | if (!t) { | |
2198 | r = log_oom(); | |
2199 | goto finish; | |
2200 | } | |
2201 | ||
2202 | message_parts[n_message_parts++] = t; | |
2203 | } | |
2204 | ||
2205 | /* Is there any accounting data available at all? */ | |
2206 | if (n_iovec == 0) { | |
2207 | r = 0; | |
2208 | goto finish; | |
2209 | } | |
2210 | ||
2211 | if (n_message_parts == 0) | |
2212 | t = strjoina("MESSAGE=", u->id, ": Completed"); | |
2213 | else { | |
2214 | _cleanup_free_ char *joined; | |
2215 | ||
2216 | message_parts[n_message_parts] = NULL; | |
2217 | ||
2218 | joined = strv_join(message_parts, ", "); | |
2219 | if (!joined) { | |
2220 | r = log_oom(); | |
2221 | goto finish; | |
2222 | } | |
2223 | ||
2224 | t = strjoina("MESSAGE=", u->id, ": ", joined); | |
2225 | } | |
2226 | ||
2227 | /* The following four fields we allocate on the stack or are static strings, we hence don't want to free them, | |
2228 | * and hence don't increase n_iovec for them */ | |
2229 | iovec[n_iovec] = IOVEC_MAKE_STRING(t); | |
2230 | iovec[n_iovec + 1] = IOVEC_MAKE_STRING("MESSAGE_ID=" SD_MESSAGE_UNIT_RESOURCES_STR); | |
2231 | ||
2232 | t = strjoina(u->manager->unit_log_field, u->id); | |
2233 | iovec[n_iovec + 2] = IOVEC_MAKE_STRING(t); | |
2234 | ||
2235 | t = strjoina(u->manager->invocation_log_field, u->invocation_id_string); | |
2236 | iovec[n_iovec + 3] = IOVEC_MAKE_STRING(t); | |
2237 | ||
2238 | log_struct_iovec(LOG_INFO, iovec, n_iovec + 4); | |
2239 | r = 0; | |
2240 | ||
2241 | finish: | |
2242 | for (i = 0; i < n_message_parts; i++) | |
2243 | free(message_parts[i]); | |
2244 | ||
2245 | for (i = 0; i < n_iovec; i++) | |
2246 | free(iovec[i].iov_base); | |
2247 | ||
2248 | return r; | |
2249 | ||
2250 | } | |
2251 | ||
e2f3b44c | 2252 | void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_success) { |
546ac4f0 | 2253 | Manager *m; |
7e6e7b06 | 2254 | bool unexpected; |
a096ed36 | 2255 | |
87f0e418 LP |
2256 | assert(u); |
2257 | assert(os < _UNIT_ACTIVE_STATE_MAX); | |
2258 | assert(ns < _UNIT_ACTIVE_STATE_MAX); | |
87f0e418 | 2259 | |
8e471ccd LP |
2260 | /* Note that this is called for all low-level state changes, |
2261 | * even if they might map to the same high-level | |
865cc19a | 2262 | * UnitActiveState! That means that ns == os is an expected |
c5315881 | 2263 | * behavior here. For example: if a mount point is remounted |
cd6d0a45 | 2264 | * this function will be called too! */ |
87f0e418 | 2265 | |
546ac4f0 MS |
2266 | m = u->manager; |
2267 | ||
f755e3b7 | 2268 | /* Update timestamps for state changes */ |
2c289ea8 | 2269 | if (!MANAGER_IS_RELOADING(m)) { |
a483fb59 | 2270 | dual_timestamp_get(&u->state_change_timestamp); |
173e3821 | 2271 | |
bdbf9951 | 2272 | if (UNIT_IS_INACTIVE_OR_FAILED(os) && !UNIT_IS_INACTIVE_OR_FAILED(ns)) |
a483fb59 | 2273 | u->inactive_exit_timestamp = u->state_change_timestamp; |
bdbf9951 | 2274 | else if (!UNIT_IS_INACTIVE_OR_FAILED(os) && UNIT_IS_INACTIVE_OR_FAILED(ns)) |
a483fb59 | 2275 | u->inactive_enter_timestamp = u->state_change_timestamp; |
bdbf9951 LP |
2276 | |
2277 | if (!UNIT_IS_ACTIVE_OR_RELOADING(os) && UNIT_IS_ACTIVE_OR_RELOADING(ns)) | |
a483fb59 | 2278 | u->active_enter_timestamp = u->state_change_timestamp; |
bdbf9951 | 2279 | else if (UNIT_IS_ACTIVE_OR_RELOADING(os) && !UNIT_IS_ACTIVE_OR_RELOADING(ns)) |
a483fb59 | 2280 | u->active_exit_timestamp = u->state_change_timestamp; |
bdbf9951 | 2281 | } |
87f0e418 | 2282 | |
865cc19a | 2283 | /* Keep track of failed units */ |
5269eb6b | 2284 | (void) manager_update_failed_units(u->manager, u, ns == UNIT_FAILED); |
f755e3b7 LP |
2285 | |
2286 | /* Make sure the cgroup is always removed when we become inactive */ | |
fdf20a31 | 2287 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
efdb0237 | 2288 | unit_prune_cgroup(u); |
fb385181 | 2289 | |
9cd86184 | 2290 | /* Note that this doesn't apply to RemainAfterExit services exiting |
6f285378 | 2291 | * successfully, since there's no change of state in that case. Which is |
9cd86184 | 2292 | * why it is handled in service_set_state() */ |
7ed9f6cd | 2293 | if (UNIT_IS_INACTIVE_OR_FAILED(os) != UNIT_IS_INACTIVE_OR_FAILED(ns)) { |
b33918c2 LP |
2294 | ExecContext *ec; |
2295 | ||
2296 | ec = unit_get_exec_context(u); | |
7ed9f6cd | 2297 | if (ec && exec_context_may_touch_console(ec)) { |
31a7eb86 | 2298 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) { |
313cefa1 | 2299 | m->n_on_console--; |
31a7eb86 ZJS |
2300 | |
2301 | if (m->n_on_console == 0) | |
2302 | /* unset no_console_output flag, since the console is free */ | |
2f38577f | 2303 | m->no_console_output = false; |
31a7eb86 | 2304 | } else |
313cefa1 | 2305 | m->n_on_console++; |
7ed9f6cd MS |
2306 | } |
2307 | } | |
2308 | ||
ac155bb8 | 2309 | if (u->job) { |
7e6e7b06 | 2310 | unexpected = false; |
87f0e418 | 2311 | |
ac155bb8 | 2312 | if (u->job->state == JOB_WAITING) |
87f0e418 LP |
2313 | |
2314 | /* So we reached a different state for this | |
2315 | * job. Let's see if we can run it now if it | |
2316 | * failed previously due to EAGAIN. */ | |
ac155bb8 | 2317 | job_add_to_run_queue(u->job); |
87f0e418 | 2318 | |
b410e6b9 | 2319 | /* Let's check whether this state change constitutes a |
35b8ca3a | 2320 | * finished job, or maybe contradicts a running job and |
b410e6b9 | 2321 | * hence needs to invalidate jobs. */ |
87f0e418 | 2322 | |
ac155bb8 | 2323 | switch (u->job->type) { |
87f0e418 | 2324 | |
b410e6b9 LP |
2325 | case JOB_START: |
2326 | case JOB_VERIFY_ACTIVE: | |
87f0e418 | 2327 | |
b410e6b9 | 2328 | if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) |
833f92ad | 2329 | job_finish_and_invalidate(u->job, JOB_DONE, true, false); |
ac155bb8 | 2330 | else if (u->job->state == JOB_RUNNING && ns != UNIT_ACTIVATING) { |
b410e6b9 | 2331 | unexpected = true; |
41b02ec7 | 2332 | |
fdf20a31 | 2333 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
833f92ad | 2334 | job_finish_and_invalidate(u->job, ns == UNIT_FAILED ? JOB_FAILED : JOB_DONE, true, false); |
b410e6b9 | 2335 | } |
87f0e418 | 2336 | |
b410e6b9 | 2337 | break; |
87f0e418 | 2338 | |
b410e6b9 LP |
2339 | case JOB_RELOAD: |
2340 | case JOB_RELOAD_OR_START: | |
3282591d | 2341 | case JOB_TRY_RELOAD: |
87f0e418 | 2342 | |
ac155bb8 | 2343 | if (u->job->state == JOB_RUNNING) { |
a096ed36 | 2344 | if (ns == UNIT_ACTIVE) |
833f92ad | 2345 | job_finish_and_invalidate(u->job, reload_success ? JOB_DONE : JOB_FAILED, true, false); |
ec2ce0c5 | 2346 | else if (!IN_SET(ns, UNIT_ACTIVATING, UNIT_RELOADING)) { |
a096ed36 | 2347 | unexpected = true; |
41b02ec7 | 2348 | |
fdf20a31 | 2349 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
833f92ad | 2350 | job_finish_and_invalidate(u->job, ns == UNIT_FAILED ? JOB_FAILED : JOB_DONE, true, false); |
a096ed36 | 2351 | } |
b410e6b9 | 2352 | } |
87f0e418 | 2353 | |
b410e6b9 | 2354 | break; |
87f0e418 | 2355 | |
b410e6b9 LP |
2356 | case JOB_STOP: |
2357 | case JOB_RESTART: | |
2358 | case JOB_TRY_RESTART: | |
87f0e418 | 2359 | |
fdf20a31 | 2360 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
833f92ad | 2361 | job_finish_and_invalidate(u->job, JOB_DONE, true, false); |
ac155bb8 | 2362 | else if (u->job->state == JOB_RUNNING && ns != UNIT_DEACTIVATING) { |
b410e6b9 | 2363 | unexpected = true; |
833f92ad | 2364 | job_finish_and_invalidate(u->job, JOB_FAILED, true, false); |
b410e6b9 | 2365 | } |
87f0e418 | 2366 | |
b410e6b9 | 2367 | break; |
87f0e418 | 2368 | |
b410e6b9 LP |
2369 | default: |
2370 | assert_not_reached("Job type unknown"); | |
87f0e418 | 2371 | } |
87f0e418 | 2372 | |
7e6e7b06 LP |
2373 | } else |
2374 | unexpected = true; | |
2375 | ||
2c289ea8 | 2376 | if (!MANAGER_IS_RELOADING(m)) { |
f3bff0eb | 2377 | |
bdbf9951 LP |
2378 | /* If this state change happened without being |
2379 | * requested by a job, then let's retroactively start | |
2380 | * or stop dependencies. We skip that step when | |
2381 | * deserializing, since we don't want to create any | |
2382 | * additional jobs just because something is already | |
2383 | * activated. */ | |
2384 | ||
2385 | if (unexpected) { | |
2386 | if (UNIT_IS_INACTIVE_OR_FAILED(os) && UNIT_IS_ACTIVE_OR_ACTIVATING(ns)) | |
2387 | retroactively_start_dependencies(u); | |
2388 | else if (UNIT_IS_ACTIVE_OR_ACTIVATING(os) && UNIT_IS_INACTIVE_OR_DEACTIVATING(ns)) | |
2389 | retroactively_stop_dependencies(u); | |
2390 | } | |
5de9682c | 2391 | |
cd0504d0 | 2392 | /* stop unneeded units regardless if going down was expected or not */ |
b33918c2 | 2393 | if (UNIT_IS_INACTIVE_OR_DEACTIVATING(ns)) |
cd0504d0 MS |
2394 | check_unneeded_dependencies(u); |
2395 | ||
bdbf9951 | 2396 | if (ns != os && ns == UNIT_FAILED) { |
ed77d407 | 2397 | log_unit_debug(u, "Unit entered failed state."); |
3ecaa09b | 2398 | unit_start_on_failure(u); |
cd6d0a45 | 2399 | } |
3b2775c5 | 2400 | } |
e537352b | 2401 | |
3b2775c5 LP |
2402 | /* Some names are special */ |
2403 | if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) { | |
2404 | ||
2405 | if (unit_has_name(u, SPECIAL_DBUS_SERVICE)) | |
865cc19a | 2406 | /* The bus might have just become available, |
3b2775c5 LP |
2407 | * hence try to connect to it, if we aren't |
2408 | * yet connected. */ | |
546ac4f0 | 2409 | bus_init(m, true); |
3b2775c5 | 2410 | |
ac155bb8 | 2411 | if (u->type == UNIT_SERVICE && |
3b2775c5 | 2412 | !UNIT_IS_ACTIVE_OR_RELOADING(os) && |
2c289ea8 | 2413 | !MANAGER_IS_RELOADING(m)) { |
3b2775c5 | 2414 | /* Write audit record if we have just finished starting up */ |
546ac4f0 | 2415 | manager_send_unit_audit(m, u, AUDIT_SERVICE_START, true); |
ac155bb8 | 2416 | u->in_audit = true; |
3b2775c5 | 2417 | } |
e983b760 | 2418 | |
3b2775c5 | 2419 | if (!UNIT_IS_ACTIVE_OR_RELOADING(os)) |
546ac4f0 | 2420 | manager_send_unit_plymouth(m, u); |
bdbf9951 | 2421 | |
3b2775c5 | 2422 | } else { |
915b1d01 LP |
2423 | /* We don't care about D-Bus going down here, since we'll get an asynchronous notification for it |
2424 | * anyway. */ | |
bdbf9951 | 2425 | |
915b1d01 LP |
2426 | if (UNIT_IS_INACTIVE_OR_FAILED(ns) && |
2427 | !UNIT_IS_INACTIVE_OR_FAILED(os) | |
2428 | && !MANAGER_IS_RELOADING(m)) { | |
cd6d0a45 | 2429 | |
915b1d01 LP |
2430 | /* This unit just stopped/failed. */ |
2431 | if (u->type == UNIT_SERVICE) { | |
4927fcae | 2432 | |
915b1d01 LP |
2433 | /* Hmm, if there was no start record written |
2434 | * write it now, so that we always have a nice | |
2435 | * pair */ | |
2436 | if (!u->in_audit) { | |
2437 | manager_send_unit_audit(m, u, AUDIT_SERVICE_START, ns == UNIT_INACTIVE); | |
cd6d0a45 | 2438 | |
915b1d01 LP |
2439 | if (ns == UNIT_INACTIVE) |
2440 | manager_send_unit_audit(m, u, AUDIT_SERVICE_STOP, true); | |
2441 | } else | |
2442 | /* Write audit record if we have just finished shutting down */ | |
2443 | manager_send_unit_audit(m, u, AUDIT_SERVICE_STOP, ns == UNIT_INACTIVE); | |
2444 | ||
2445 | u->in_audit = false; | |
2446 | } | |
bdbf9951 | 2447 | |
915b1d01 LP |
2448 | /* Write a log message about consumed resources */ |
2449 | unit_log_resources(u); | |
cd6d0a45 | 2450 | } |
f278026d LP |
2451 | } |
2452 | ||
546ac4f0 | 2453 | manager_recheck_journal(m); |
3ecaa09b | 2454 | unit_trigger_notify(u); |
3b2775c5 | 2455 | |
2c289ea8 | 2456 | if (!MANAGER_IS_RELOADING(u->manager)) { |
ff502445 LP |
2457 | /* Maybe we finished startup and are now ready for |
2458 | * being stopped because unneeded? */ | |
bf6dcfa6 | 2459 | unit_check_unneeded(u); |
c1e1601e | 2460 | |
ff502445 LP |
2461 | /* Maybe we finished startup, but something we needed |
2462 | * has vanished? Let's die then. (This happens when | |
2463 | * something BindsTo= to a Type=oneshot unit, as these | |
2464 | * units go directly from starting to inactive, | |
2465 | * without ever entering started.) */ | |
2466 | unit_check_binds_to(u); | |
2467 | } | |
2468 | ||
c1e1601e | 2469 | unit_add_to_dbus_queue(u); |
701cc384 | 2470 | unit_add_to_gc_queue(u); |
87f0e418 LP |
2471 | } |
2472 | ||
87f0e418 | 2473 | int unit_watch_pid(Unit *u, pid_t pid) { |
a911bb9a LP |
2474 | int q, r; |
2475 | ||
87f0e418 LP |
2476 | assert(u); |
2477 | assert(pid >= 1); | |
2478 | ||
5ba6985b LP |
2479 | /* Watch a specific PID. We only support one or two units |
2480 | * watching each PID for now, not more. */ | |
2481 | ||
d5099efc | 2482 | r = set_ensure_allocated(&u->pids, NULL); |
5ba6985b LP |
2483 | if (r < 0) |
2484 | return r; | |
2485 | ||
d5099efc | 2486 | r = hashmap_ensure_allocated(&u->manager->watch_pids1, NULL); |
a911bb9a LP |
2487 | if (r < 0) |
2488 | return r; | |
2489 | ||
fea72cc0 | 2490 | r = hashmap_put(u->manager->watch_pids1, PID_TO_PTR(pid), u); |
5ba6985b | 2491 | if (r == -EEXIST) { |
d5099efc | 2492 | r = hashmap_ensure_allocated(&u->manager->watch_pids2, NULL); |
5ba6985b LP |
2493 | if (r < 0) |
2494 | return r; | |
05e343b7 | 2495 | |
fea72cc0 | 2496 | r = hashmap_put(u->manager->watch_pids2, PID_TO_PTR(pid), u); |
5ba6985b | 2497 | } |
a911bb9a | 2498 | |
fea72cc0 | 2499 | q = set_put(u->pids, PID_TO_PTR(pid)); |
a911bb9a LP |
2500 | if (q < 0) |
2501 | return q; | |
2502 | ||
2503 | return r; | |
87f0e418 LP |
2504 | } |
2505 | ||
2506 | void unit_unwatch_pid(Unit *u, pid_t pid) { | |
2507 | assert(u); | |
2508 | assert(pid >= 1); | |
2509 | ||
fea72cc0 LP |
2510 | (void) hashmap_remove_value(u->manager->watch_pids1, PID_TO_PTR(pid), u); |
2511 | (void) hashmap_remove_value(u->manager->watch_pids2, PID_TO_PTR(pid), u); | |
2512 | (void) set_remove(u->pids, PID_TO_PTR(pid)); | |
a911bb9a LP |
2513 | } |
2514 | ||
bd44e61b LP |
2515 | void unit_unwatch_all_pids(Unit *u) { |
2516 | assert(u); | |
2517 | ||
2518 | while (!set_isempty(u->pids)) | |
fea72cc0 | 2519 | unit_unwatch_pid(u, PTR_TO_PID(set_first(u->pids))); |
bd44e61b | 2520 | |
efdb0237 | 2521 | u->pids = set_free(u->pids); |
a911bb9a LP |
2522 | } |
2523 | ||
2524 | void unit_tidy_watch_pids(Unit *u, pid_t except1, pid_t except2) { | |
2525 | Iterator i; | |
2526 | void *e; | |
2527 | ||
2528 | assert(u); | |
2529 | ||
2530 | /* Cleans dead PIDs from our list */ | |
2531 | ||
2532 | SET_FOREACH(e, u->pids, i) { | |
fea72cc0 | 2533 | pid_t pid = PTR_TO_PID(e); |
a911bb9a LP |
2534 | |
2535 | if (pid == except1 || pid == except2) | |
2536 | continue; | |
2537 | ||
9f5650ae | 2538 | if (!pid_is_unwaited(pid)) |
bd44e61b | 2539 | unit_unwatch_pid(u, pid); |
a911bb9a | 2540 | } |
87f0e418 LP |
2541 | } |
2542 | ||
87f0e418 LP |
2543 | bool unit_job_is_applicable(Unit *u, JobType j) { |
2544 | assert(u); | |
2545 | assert(j >= 0 && j < _JOB_TYPE_MAX); | |
2546 | ||
2547 | switch (j) { | |
2548 | ||
2549 | case JOB_VERIFY_ACTIVE: | |
2550 | case JOB_START: | |
e0209d83 | 2551 | case JOB_NOP: |
f5869324 LP |
2552 | /* Note that we don't check unit_can_start() here. That's because .device units and suchlike are not |
2553 | * startable by us but may appear due to external events, and it thus makes sense to permit enqueing | |
2554 | * jobs for it. */ | |
87f0e418 LP |
2555 | return true; |
2556 | ||
f5869324 LP |
2557 | case JOB_STOP: |
2558 | /* Similar as above. However, perpetual units can never be stopped (neither explicitly nor due to | |
2559 | * external events), hence it makes no sense to permit enqueing such a request either. */ | |
2560 | return !u->perpetual; | |
2561 | ||
87f0e418 LP |
2562 | case JOB_RESTART: |
2563 | case JOB_TRY_RESTART: | |
f5869324 | 2564 | return unit_can_stop(u) && unit_can_start(u); |
87f0e418 LP |
2565 | |
2566 | case JOB_RELOAD: | |
3282591d | 2567 | case JOB_TRY_RELOAD: |
87f0e418 LP |
2568 | return unit_can_reload(u); |
2569 | ||
2570 | case JOB_RELOAD_OR_START: | |
2571 | return unit_can_reload(u) && unit_can_start(u); | |
2572 | ||
2573 | default: | |
2574 | assert_not_reached("Invalid job type"); | |
2575 | } | |
2576 | } | |
2577 | ||
f2341e0a LP |
2578 | static void maybe_warn_about_dependency(Unit *u, const char *other, UnitDependency dependency) { |
2579 | assert(u); | |
d1fab3fe | 2580 | |
f2341e0a LP |
2581 | /* Only warn about some unit types */ |
2582 | if (!IN_SET(dependency, UNIT_CONFLICTS, UNIT_CONFLICTED_BY, UNIT_BEFORE, UNIT_AFTER, UNIT_ON_FAILURE, UNIT_TRIGGERS, UNIT_TRIGGERED_BY)) | |
2583 | return; | |
3f3cc397 | 2584 | |
f2341e0a LP |
2585 | if (streq_ptr(u->id, other)) |
2586 | log_unit_warning(u, "Dependency %s=%s dropped", unit_dependency_to_string(dependency), u->id); | |
2587 | else | |
2588 | log_unit_warning(u, "Dependency %s=%s dropped, merged into %s", unit_dependency_to_string(dependency), strna(other), u->id); | |
d1fab3fe ZJS |
2589 | } |
2590 | ||
eef85c4a LP |
2591 | static int unit_add_dependency_hashmap( |
2592 | Hashmap **h, | |
2593 | Unit *other, | |
2594 | UnitDependencyMask origin_mask, | |
2595 | UnitDependencyMask destination_mask) { | |
2596 | ||
2597 | UnitDependencyInfo info; | |
2598 | int r; | |
2599 | ||
2600 | assert(h); | |
2601 | assert(other); | |
2602 | assert(origin_mask < _UNIT_DEPENDENCY_MASK_FULL); | |
2603 | assert(destination_mask < _UNIT_DEPENDENCY_MASK_FULL); | |
2604 | assert(origin_mask > 0 || destination_mask > 0); | |
2605 | ||
2606 | r = hashmap_ensure_allocated(h, NULL); | |
2607 | if (r < 0) | |
2608 | return r; | |
2609 | ||
2610 | assert_cc(sizeof(void*) == sizeof(info)); | |
2611 | ||
2612 | info.data = hashmap_get(*h, other); | |
2613 | if (info.data) { | |
2614 | /* Entry already exists. Add in our mask. */ | |
2615 | ||
2616 | if ((info.origin_mask & origin_mask) == info.origin_mask && | |
2617 | (info.destination_mask & destination_mask) == info.destination_mask) | |
2618 | return 0; /* NOP */ | |
2619 | ||
2620 | info.origin_mask |= origin_mask; | |
2621 | info.destination_mask |= destination_mask; | |
2622 | ||
2623 | r = hashmap_update(*h, other, info.data); | |
2624 | } else { | |
2625 | info = (UnitDependencyInfo) { | |
2626 | .origin_mask = origin_mask, | |
2627 | .destination_mask = destination_mask, | |
2628 | }; | |
2629 | ||
2630 | r = hashmap_put(*h, other, info.data); | |
2631 | } | |
2632 | if (r < 0) | |
2633 | return r; | |
2634 | ||
2635 | return 1; | |
2636 | } | |
2637 | ||
2638 | int unit_add_dependency( | |
2639 | Unit *u, | |
2640 | UnitDependency d, | |
2641 | Unit *other, | |
2642 | bool add_reference, | |
2643 | UnitDependencyMask mask) { | |
87f0e418 LP |
2644 | |
2645 | static const UnitDependency inverse_table[_UNIT_DEPENDENCY_MAX] = { | |
2646 | [UNIT_REQUIRES] = UNIT_REQUIRED_BY, | |
87f0e418 | 2647 | [UNIT_WANTS] = UNIT_WANTED_BY, |
be7d9ff7 | 2648 | [UNIT_REQUISITE] = UNIT_REQUISITE_OF, |
7f2cddae | 2649 | [UNIT_BINDS_TO] = UNIT_BOUND_BY, |
60649f17 | 2650 | [UNIT_PART_OF] = UNIT_CONSISTS_OF, |
be7d9ff7 | 2651 | [UNIT_REQUIRED_BY] = UNIT_REQUIRES, |
be7d9ff7 | 2652 | [UNIT_REQUISITE_OF] = UNIT_REQUISITE, |
be7d9ff7 | 2653 | [UNIT_WANTED_BY] = UNIT_WANTS, |
7f2cddae | 2654 | [UNIT_BOUND_BY] = UNIT_BINDS_TO, |
60649f17 | 2655 | [UNIT_CONSISTS_OF] = UNIT_PART_OF, |
69dd2852 LP |
2656 | [UNIT_CONFLICTS] = UNIT_CONFLICTED_BY, |
2657 | [UNIT_CONFLICTED_BY] = UNIT_CONFLICTS, | |
87f0e418 | 2658 | [UNIT_BEFORE] = UNIT_AFTER, |
701cc384 | 2659 | [UNIT_AFTER] = UNIT_BEFORE, |
5de9682c | 2660 | [UNIT_ON_FAILURE] = _UNIT_DEPENDENCY_INVALID, |
701cc384 | 2661 | [UNIT_REFERENCES] = UNIT_REFERENCED_BY, |
57020a3a LP |
2662 | [UNIT_REFERENCED_BY] = UNIT_REFERENCES, |
2663 | [UNIT_TRIGGERS] = UNIT_TRIGGERED_BY, | |
4dcc1cb4 | 2664 | [UNIT_TRIGGERED_BY] = UNIT_TRIGGERS, |
7f2cddae | 2665 | [UNIT_PROPAGATES_RELOAD_TO] = UNIT_RELOAD_PROPAGATED_FROM, |
85e9a101 | 2666 | [UNIT_RELOAD_PROPAGATED_FROM] = UNIT_PROPAGATES_RELOAD_TO, |
613b411c | 2667 | [UNIT_JOINS_NAMESPACE_OF] = UNIT_JOINS_NAMESPACE_OF, |
87f0e418 | 2668 | }; |
eef85c4a LP |
2669 | Unit *original_u = u, *original_other = other; |
2670 | int r; | |
87f0e418 LP |
2671 | |
2672 | assert(u); | |
2673 | assert(d >= 0 && d < _UNIT_DEPENDENCY_MAX); | |
87f0e418 LP |
2674 | assert(other); |
2675 | ||
9f151f29 LP |
2676 | u = unit_follow_merge(u); |
2677 | other = unit_follow_merge(other); | |
2678 | ||
87f0e418 LP |
2679 | /* We won't allow dependencies on ourselves. We will not |
2680 | * consider them an error however. */ | |
d1fab3fe | 2681 | if (u == other) { |
eef85c4a | 2682 | maybe_warn_about_dependency(original_u, original_other->id, d); |
87f0e418 | 2683 | return 0; |
d1fab3fe | 2684 | } |
87f0e418 | 2685 | |
eef85c4a LP |
2686 | if ((d == UNIT_BEFORE && other->type == UNIT_DEVICE) || |
2687 | (d == UNIT_AFTER && u->type == UNIT_DEVICE)) { | |
dd5e7000 ZJS |
2688 | log_unit_warning(u, "Dependency Before=%s ignored (.device units cannot be delayed)", other->id); |
2689 | return 0; | |
2690 | } | |
2691 | ||
eef85c4a | 2692 | r = unit_add_dependency_hashmap(u->dependencies + d, other, mask, 0); |
613b411c | 2693 | if (r < 0) |
87f0e418 LP |
2694 | return r; |
2695 | ||
eef85c4a LP |
2696 | if (inverse_table[d] != _UNIT_DEPENDENCY_INVALID && inverse_table[d] != d) { |
2697 | r = unit_add_dependency_hashmap(other->dependencies + inverse_table[d], u, 0, mask); | |
613b411c LP |
2698 | if (r < 0) |
2699 | return r; | |
2700 | } | |
2701 | ||
2702 | if (add_reference) { | |
eef85c4a | 2703 | r = unit_add_dependency_hashmap(u->dependencies + UNIT_REFERENCES, other, mask, 0); |
613b411c | 2704 | if (r < 0) |
5de9682c LP |
2705 | return r; |
2706 | ||
eef85c4a | 2707 | r = unit_add_dependency_hashmap(other->dependencies + UNIT_REFERENCED_BY, u, 0, mask); |
613b411c | 2708 | if (r < 0) |
701cc384 | 2709 | return r; |
613b411c | 2710 | } |
87f0e418 | 2711 | |
c1e1601e | 2712 | unit_add_to_dbus_queue(u); |
87f0e418 LP |
2713 | return 0; |
2714 | } | |
0301abf4 | 2715 | |
eef85c4a | 2716 | int unit_add_two_dependencies(Unit *u, UnitDependency d, UnitDependency e, Unit *other, bool add_reference, UnitDependencyMask mask) { |
2c966c03 LP |
2717 | int r; |
2718 | ||
2719 | assert(u); | |
2720 | ||
eef85c4a | 2721 | r = unit_add_dependency(u, d, other, add_reference, mask); |
3f3cc397 | 2722 | if (r < 0) |
2c966c03 LP |
2723 | return r; |
2724 | ||
eef85c4a | 2725 | return unit_add_dependency(u, e, other, add_reference, mask); |
2c966c03 LP |
2726 | } |
2727 | ||
7410616c LP |
2728 | static int resolve_template(Unit *u, const char *name, const char*path, char **buf, const char **ret) { |
2729 | int r; | |
9e2f7c11 LP |
2730 | |
2731 | assert(u); | |
2732 | assert(name || path); | |
7410616c LP |
2733 | assert(buf); |
2734 | assert(ret); | |
9e2f7c11 LP |
2735 | |
2736 | if (!name) | |
2b6bf07d | 2737 | name = basename(path); |
9e2f7c11 | 2738 | |
7410616c LP |
2739 | if (!unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) { |
2740 | *buf = NULL; | |
2741 | *ret = name; | |
2742 | return 0; | |
9e2f7c11 LP |
2743 | } |
2744 | ||
ac155bb8 | 2745 | if (u->instance) |
7410616c | 2746 | r = unit_name_replace_instance(name, u->instance, buf); |
9e2f7c11 | 2747 | else { |
ae018d9b | 2748 | _cleanup_free_ char *i = NULL; |
9e2f7c11 | 2749 | |
7410616c LP |
2750 | r = unit_name_to_prefix(u->id, &i); |
2751 | if (r < 0) | |
2752 | return r; | |
9e2f7c11 | 2753 | |
7410616c | 2754 | r = unit_name_replace_instance(name, i, buf); |
9e2f7c11 | 2755 | } |
7410616c LP |
2756 | if (r < 0) |
2757 | return r; | |
9e2f7c11 | 2758 | |
7410616c LP |
2759 | *ret = *buf; |
2760 | return 0; | |
9e2f7c11 LP |
2761 | } |
2762 | ||
eef85c4a | 2763 | int unit_add_dependency_by_name(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference, UnitDependencyMask mask) { |
7410616c | 2764 | _cleanup_free_ char *buf = NULL; |
09b6b09f LP |
2765 | Unit *other; |
2766 | int r; | |
2767 | ||
9e2f7c11 LP |
2768 | assert(u); |
2769 | assert(name || path); | |
09b6b09f | 2770 | |
7410616c LP |
2771 | r = resolve_template(u, name, path, &buf, &name); |
2772 | if (r < 0) | |
2773 | return r; | |
09b6b09f | 2774 | |
8afbb8e1 LP |
2775 | r = manager_load_unit(u->manager, name, path, NULL, &other); |
2776 | if (r < 0) | |
2777 | return r; | |
9e2f7c11 | 2778 | |
eef85c4a | 2779 | return unit_add_dependency(u, d, other, add_reference, mask); |
09b6b09f LP |
2780 | } |
2781 | ||
eef85c4a | 2782 | int unit_add_two_dependencies_by_name(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference, UnitDependencyMask mask) { |
7410616c | 2783 | _cleanup_free_ char *buf = NULL; |
2c966c03 LP |
2784 | Unit *other; |
2785 | int r; | |
2c966c03 LP |
2786 | |
2787 | assert(u); | |
2788 | assert(name || path); | |
2789 | ||
7410616c LP |
2790 | r = resolve_template(u, name, path, &buf, &name); |
2791 | if (r < 0) | |
2792 | return r; | |
2c966c03 | 2793 | |
3f3cc397 LP |
2794 | r = manager_load_unit(u->manager, name, path, NULL, &other); |
2795 | if (r < 0) | |
68eda4bd | 2796 | return r; |
2c966c03 | 2797 | |
eef85c4a | 2798 | return unit_add_two_dependencies(u, d, e, other, add_reference, mask); |
2c966c03 LP |
2799 | } |
2800 | ||
0301abf4 | 2801 | int set_unit_path(const char *p) { |
0301abf4 | 2802 | /* This is mostly for debug purposes */ |
cbe46ead | 2803 | if (setenv("SYSTEMD_UNIT_PATH", p, 1) < 0) |
26d04f86 | 2804 | return -errno; |
0301abf4 LP |
2805 | |
2806 | return 0; | |
2807 | } | |
88066b3a | 2808 | |
ea430986 | 2809 | char *unit_dbus_path(Unit *u) { |
ea430986 LP |
2810 | assert(u); |
2811 | ||
ac155bb8 | 2812 | if (!u->id) |
04ade7d2 LP |
2813 | return NULL; |
2814 | ||
48899192 | 2815 | return unit_dbus_path_from_name(u->id); |
ea430986 LP |
2816 | } |
2817 | ||
4b58153d LP |
2818 | char *unit_dbus_path_invocation_id(Unit *u) { |
2819 | assert(u); | |
2820 | ||
2821 | if (sd_id128_is_null(u->invocation_id)) | |
2822 | return NULL; | |
2823 | ||
2824 | return unit_dbus_path_from_name(u->invocation_id_string); | |
2825 | } | |
2826 | ||
d79200e2 LP |
2827 | int unit_set_slice(Unit *u, Unit *slice) { |
2828 | assert(u); | |
2829 | assert(slice); | |
2830 | ||
2831 | /* Sets the unit slice if it has not been set before. Is extra | |
2832 | * careful, to only allow this for units that actually have a | |
2833 | * cgroup context. Also, we don't allow to set this for slices | |
2834 | * (since the parent slice is derived from the name). Make | |
2835 | * sure the unit we set is actually a slice. */ | |
2836 | ||
2837 | if (!UNIT_HAS_CGROUP_CONTEXT(u)) | |
2838 | return -EOPNOTSUPP; | |
2839 | ||
2840 | if (u->type == UNIT_SLICE) | |
2841 | return -EINVAL; | |
2842 | ||
102ef982 LP |
2843 | if (unit_active_state(u) != UNIT_INACTIVE) |
2844 | return -EBUSY; | |
2845 | ||
d79200e2 LP |
2846 | if (slice->type != UNIT_SLICE) |
2847 | return -EINVAL; | |
2848 | ||
efdb0237 LP |
2849 | if (unit_has_name(u, SPECIAL_INIT_SCOPE) && |
2850 | !unit_has_name(slice, SPECIAL_ROOT_SLICE)) | |
2851 | return -EPERM; | |
2852 | ||
d79200e2 LP |
2853 | if (UNIT_DEREF(u->slice) == slice) |
2854 | return 0; | |
2855 | ||
99e66921 TH |
2856 | /* Disallow slice changes if @u is already bound to cgroups */ |
2857 | if (UNIT_ISSET(u->slice) && u->cgroup_realized) | |
d79200e2 LP |
2858 | return -EBUSY; |
2859 | ||
99e66921 | 2860 | unit_ref_unset(&u->slice); |
d79200e2 LP |
2861 | unit_ref_set(&u->slice, slice); |
2862 | return 1; | |
2863 | } | |
2864 | ||
2865 | int unit_set_default_slice(Unit *u) { | |
a8833944 LP |
2866 | _cleanup_free_ char *b = NULL; |
2867 | const char *slice_name; | |
a016b922 LP |
2868 | Unit *slice; |
2869 | int r; | |
2870 | ||
2871 | assert(u); | |
2872 | ||
9444b1f2 | 2873 | if (UNIT_ISSET(u->slice)) |
a016b922 LP |
2874 | return 0; |
2875 | ||
a8833944 LP |
2876 | if (u->instance) { |
2877 | _cleanup_free_ char *prefix = NULL, *escaped = NULL; | |
68eda4bd | 2878 | |
a8833944 LP |
2879 | /* Implicitly place all instantiated units in their |
2880 | * own per-template slice */ | |
2881 | ||
7410616c LP |
2882 | r = unit_name_to_prefix(u->id, &prefix); |
2883 | if (r < 0) | |
2884 | return r; | |
a8833944 LP |
2885 | |
2886 | /* The prefix is already escaped, but it might include | |
2887 | * "-" which has a special meaning for slice units, | |
2888 | * hence escape it here extra. */ | |
7410616c | 2889 | escaped = unit_name_escape(prefix); |
a8833944 LP |
2890 | if (!escaped) |
2891 | return -ENOMEM; | |
2892 | ||
463d0d15 | 2893 | if (MANAGER_IS_SYSTEM(u->manager)) |
605405c6 | 2894 | b = strjoin("system-", escaped, ".slice"); |
a8833944 LP |
2895 | else |
2896 | b = strappend(escaped, ".slice"); | |
2897 | if (!b) | |
2898 | return -ENOMEM; | |
2899 | ||
2900 | slice_name = b; | |
2901 | } else | |
2902 | slice_name = | |
463d0d15 | 2903 | MANAGER_IS_SYSTEM(u->manager) && !unit_has_name(u, SPECIAL_INIT_SCOPE) |
a8833944 LP |
2904 | ? SPECIAL_SYSTEM_SLICE |
2905 | : SPECIAL_ROOT_SLICE; | |
2906 | ||
2907 | r = manager_load_unit(u->manager, slice_name, NULL, NULL, &slice); | |
a016b922 LP |
2908 | if (r < 0) |
2909 | return r; | |
2910 | ||
d79200e2 | 2911 | return unit_set_slice(u, slice); |
a016b922 LP |
2912 | } |
2913 | ||
9444b1f2 LP |
2914 | const char *unit_slice_name(Unit *u) { |
2915 | assert(u); | |
2916 | ||
2917 | if (!UNIT_ISSET(u->slice)) | |
2918 | return NULL; | |
2919 | ||
2920 | return UNIT_DEREF(u->slice)->id; | |
2921 | } | |
2922 | ||
f6ff8c29 | 2923 | int unit_load_related_unit(Unit *u, const char *type, Unit **_found) { |
78edb35a | 2924 | _cleanup_free_ char *t = NULL; |
f6ff8c29 LP |
2925 | int r; |
2926 | ||
2927 | assert(u); | |
2928 | assert(type); | |
2929 | assert(_found); | |
2930 | ||
7410616c LP |
2931 | r = unit_name_change_suffix(u->id, type, &t); |
2932 | if (r < 0) | |
2933 | return r; | |
2934 | if (unit_has_name(u, t)) | |
2935 | return -EINVAL; | |
f6ff8c29 | 2936 | |
ac155bb8 | 2937 | r = manager_load_unit(u->manager, t, NULL, NULL, _found); |
9e2f7c11 | 2938 | assert(r < 0 || *_found != u); |
f6ff8c29 LP |
2939 | return r; |
2940 | } | |
2941 | ||
bbc29086 DM |
2942 | static int signal_name_owner_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
2943 | const char *name, *old_owner, *new_owner; | |
2944 | Unit *u = userdata; | |
2945 | int r; | |
2946 | ||
2947 | assert(message); | |
2948 | assert(u); | |
2949 | ||
2950 | r = sd_bus_message_read(message, "sss", &name, &old_owner, &new_owner); | |
2951 | if (r < 0) { | |
2952 | bus_log_parse_error(r); | |
2953 | return 0; | |
2954 | } | |
2955 | ||
b0076268 MK |
2956 | old_owner = isempty(old_owner) ? NULL : old_owner; |
2957 | new_owner = isempty(new_owner) ? NULL : new_owner; | |
2958 | ||
bbc29086 DM |
2959 | if (UNIT_VTABLE(u)->bus_name_owner_change) |
2960 | UNIT_VTABLE(u)->bus_name_owner_change(u, name, old_owner, new_owner); | |
2961 | ||
2962 | return 0; | |
2963 | } | |
2964 | ||
9806e87d LP |
2965 | int unit_install_bus_match(Unit *u, sd_bus *bus, const char *name) { |
2966 | const char *match; | |
bbc29086 | 2967 | |
9806e87d LP |
2968 | assert(u); |
2969 | assert(bus); | |
2970 | assert(name); | |
bbc29086 DM |
2971 | |
2972 | if (u->match_bus_slot) | |
2973 | return -EBUSY; | |
2974 | ||
9806e87d | 2975 | match = strjoina("type='signal'," |
81d62103 ZJS |
2976 | "sender='org.freedesktop.DBus'," |
2977 | "path='/org/freedesktop/DBus'," | |
2978 | "interface='org.freedesktop.DBus'," | |
2979 | "member='NameOwnerChanged'," | |
2980 | "arg0='", name, "'"); | |
bbc29086 DM |
2981 | |
2982 | return sd_bus_add_match(bus, &u->match_bus_slot, match, signal_name_owner_changed, u); | |
2983 | } | |
2984 | ||
05e343b7 | 2985 | int unit_watch_bus_name(Unit *u, const char *name) { |
bbc29086 DM |
2986 | int r; |
2987 | ||
05e343b7 LP |
2988 | assert(u); |
2989 | assert(name); | |
2990 | ||
2991 | /* Watch a specific name on the bus. We only support one unit | |
2992 | * watching each name for now. */ | |
2993 | ||
bbc29086 DM |
2994 | if (u->manager->api_bus) { |
2995 | /* If the bus is already available, install the match directly. | |
2996 | * Otherwise, just put the name in the list. bus_setup_api() will take care later. */ | |
9806e87d | 2997 | r = unit_install_bus_match(u, u->manager->api_bus, name); |
bbc29086 | 2998 | if (r < 0) |
8ea823b6 | 2999 | return log_warning_errno(r, "Failed to subscribe to NameOwnerChanged signal for '%s': %m", name); |
bbc29086 DM |
3000 | } |
3001 | ||
3002 | r = hashmap_put(u->manager->watch_bus, name, u); | |
3003 | if (r < 0) { | |
3004 | u->match_bus_slot = sd_bus_slot_unref(u->match_bus_slot); | |
3005 | return log_warning_errno(r, "Failed to put bus name to hashmap: %m"); | |
3006 | } | |
3007 | ||
3008 | return 0; | |
05e343b7 LP |
3009 | } |
3010 | ||
3011 | void unit_unwatch_bus_name(Unit *u, const char *name) { | |
3012 | assert(u); | |
3013 | assert(name); | |
3014 | ||
8367fea5 | 3015 | (void) hashmap_remove_value(u->manager->watch_bus, name, u); |
bbc29086 | 3016 | u->match_bus_slot = sd_bus_slot_unref(u->match_bus_slot); |
05e343b7 LP |
3017 | } |
3018 | ||
a16e1123 LP |
3019 | bool unit_can_serialize(Unit *u) { |
3020 | assert(u); | |
3021 | ||
3022 | return UNIT_VTABLE(u)->serialize && UNIT_VTABLE(u)->deserialize_item; | |
3023 | } | |
3024 | ||
8b108bd0 FB |
3025 | static int unit_serialize_cgroup_mask(FILE *f, const char *key, CGroupMask mask) { |
3026 | _cleanup_free_ char *s = NULL; | |
3027 | int r = 0; | |
3028 | ||
3029 | assert(f); | |
3030 | assert(key); | |
3031 | ||
3032 | if (mask != 0) { | |
3033 | r = cg_mask_to_string(mask, &s); | |
3034 | if (r >= 0) { | |
3035 | fputs(key, f); | |
3036 | fputc('=', f); | |
3037 | fputs(s, f); | |
3038 | fputc('\n', f); | |
3039 | } | |
3040 | } | |
3041 | return r; | |
3042 | } | |
3043 | ||
6b659ed8 LP |
3044 | static const char *ip_accounting_metric_field[_CGROUP_IP_ACCOUNTING_METRIC_MAX] = { |
3045 | [CGROUP_IP_INGRESS_BYTES] = "ip-accounting-ingress-bytes", | |
3046 | [CGROUP_IP_INGRESS_PACKETS] = "ip-accounting-ingress-packets", | |
3047 | [CGROUP_IP_EGRESS_BYTES] = "ip-accounting-egress-bytes", | |
3048 | [CGROUP_IP_EGRESS_PACKETS] = "ip-accounting-egress-packets", | |
3049 | }; | |
3050 | ||
6b78f9b4 | 3051 | int unit_serialize(Unit *u, FILE *f, FDSet *fds, bool serialize_jobs) { |
6b659ed8 | 3052 | CGroupIPAccountingMetric m; |
a16e1123 LP |
3053 | int r; |
3054 | ||
3055 | assert(u); | |
3056 | assert(f); | |
3057 | assert(fds); | |
3058 | ||
9bdb98c5 LP |
3059 | if (unit_can_serialize(u)) { |
3060 | ExecRuntime *rt; | |
a16e1123 | 3061 | |
9bdb98c5 | 3062 | r = UNIT_VTABLE(u)->serialize(u, f, fds); |
613b411c LP |
3063 | if (r < 0) |
3064 | return r; | |
9bdb98c5 LP |
3065 | |
3066 | rt = unit_get_exec_runtime(u); | |
3067 | if (rt) { | |
f2341e0a | 3068 | r = exec_runtime_serialize(u, rt, f, fds); |
9bdb98c5 LP |
3069 | if (r < 0) |
3070 | return r; | |
3071 | } | |
e0209d83 MS |
3072 | } |
3073 | ||
a483fb59 LP |
3074 | dual_timestamp_serialize(f, "state-change-timestamp", &u->state_change_timestamp); |
3075 | ||
ac155bb8 MS |
3076 | dual_timestamp_serialize(f, "inactive-exit-timestamp", &u->inactive_exit_timestamp); |
3077 | dual_timestamp_serialize(f, "active-enter-timestamp", &u->active_enter_timestamp); | |
3078 | dual_timestamp_serialize(f, "active-exit-timestamp", &u->active_exit_timestamp); | |
3079 | dual_timestamp_serialize(f, "inactive-enter-timestamp", &u->inactive_enter_timestamp); | |
a483fb59 | 3080 | |
ac155bb8 | 3081 | dual_timestamp_serialize(f, "condition-timestamp", &u->condition_timestamp); |
59fccdc5 | 3082 | dual_timestamp_serialize(f, "assert-timestamp", &u->assert_timestamp); |
2791a8f8 | 3083 | |
ac155bb8 MS |
3084 | if (dual_timestamp_is_set(&u->condition_timestamp)) |
3085 | unit_serialize_item(u, f, "condition-result", yes_no(u->condition_result)); | |
10717a1a | 3086 | |
59fccdc5 LP |
3087 | if (dual_timestamp_is_set(&u->assert_timestamp)) |
3088 | unit_serialize_item(u, f, "assert-result", yes_no(u->assert_result)); | |
3089 | ||
c2756a68 | 3090 | unit_serialize_item(u, f, "transient", yes_no(u->transient)); |
fe700f46 | 3091 | |
66ebf6c0 | 3092 | unit_serialize_item_format(u, f, "cpu-usage-base", "%" PRIu64, u->cpu_usage_base); |
fe700f46 LP |
3093 | if (u->cpu_usage_last != NSEC_INFINITY) |
3094 | unit_serialize_item_format(u, f, "cpu-usage-last", "%" PRIu64, u->cpu_usage_last); | |
c2756a68 LP |
3095 | |
3096 | if (u->cgroup_path) | |
3097 | unit_serialize_item(u, f, "cgroup", u->cgroup_path); | |
de1d4f9b | 3098 | unit_serialize_item(u, f, "cgroup-realized", yes_no(u->cgroup_realized)); |
8b108bd0 FB |
3099 | (void) unit_serialize_cgroup_mask(f, "cgroup-realized-mask", u->cgroup_realized_mask); |
3100 | (void) unit_serialize_cgroup_mask(f, "cgroup-enabled-mask", u->cgroup_enabled_mask); | |
906c06f6 | 3101 | unit_serialize_item_format(u, f, "cgroup-bpf-realized", "%i", u->cgroup_bpf_state); |
c2756a68 | 3102 | |
00d9ef85 LP |
3103 | if (uid_is_valid(u->ref_uid)) |
3104 | unit_serialize_item_format(u, f, "ref-uid", UID_FMT, u->ref_uid); | |
3105 | if (gid_is_valid(u->ref_gid)) | |
3106 | unit_serialize_item_format(u, f, "ref-gid", GID_FMT, u->ref_gid); | |
3107 | ||
4b58153d LP |
3108 | if (!sd_id128_is_null(u->invocation_id)) |
3109 | unit_serialize_item_format(u, f, "invocation-id", SD_ID128_FORMAT_STR, SD_ID128_FORMAT_VAL(u->invocation_id)); | |
3110 | ||
05a98afd LP |
3111 | bus_track_serialize(u->bus_track, f, "ref"); |
3112 | ||
6b659ed8 LP |
3113 | for (m = 0; m < _CGROUP_IP_ACCOUNTING_METRIC_MAX; m++) { |
3114 | uint64_t v; | |
3115 | ||
3116 | r = unit_get_ip_accounting(u, m, &v); | |
3117 | if (r >= 0) | |
3118 | unit_serialize_item_format(u, f, ip_accounting_metric_field[m], "%" PRIu64, v); | |
3119 | } | |
3120 | ||
613b411c LP |
3121 | if (serialize_jobs) { |
3122 | if (u->job) { | |
3123 | fprintf(f, "job\n"); | |
05a98afd | 3124 | job_serialize(u->job, f); |
613b411c LP |
3125 | } |
3126 | ||
3127 | if (u->nop_job) { | |
3128 | fprintf(f, "job\n"); | |
05a98afd | 3129 | job_serialize(u->nop_job, f); |
613b411c LP |
3130 | } |
3131 | } | |
3132 | ||
a16e1123 LP |
3133 | /* End marker */ |
3134 | fputc('\n', f); | |
3135 | return 0; | |
3136 | } | |
3137 | ||
a34ceba6 LP |
3138 | int unit_serialize_item(Unit *u, FILE *f, const char *key, const char *value) { |
3139 | assert(u); | |
3140 | assert(f); | |
3141 | assert(key); | |
3142 | ||
3143 | if (!value) | |
3144 | return 0; | |
3145 | ||
3146 | fputs(key, f); | |
3147 | fputc('=', f); | |
3148 | fputs(value, f); | |
3149 | fputc('\n', f); | |
3150 | ||
3151 | return 1; | |
3152 | } | |
3153 | ||
3154 | int unit_serialize_item_escaped(Unit *u, FILE *f, const char *key, const char *value) { | |
3155 | _cleanup_free_ char *c = NULL; | |
3156 | ||
3157 | assert(u); | |
3158 | assert(f); | |
3159 | assert(key); | |
3160 | ||
3161 | if (!value) | |
3162 | return 0; | |
3163 | ||
3164 | c = cescape(value); | |
3165 | if (!c) | |
3166 | return -ENOMEM; | |
3167 | ||
3168 | fputs(key, f); | |
3169 | fputc('=', f); | |
3170 | fputs(c, f); | |
3171 | fputc('\n', f); | |
3172 | ||
3173 | return 1; | |
3174 | } | |
3175 | ||
3176 | int unit_serialize_item_fd(Unit *u, FILE *f, FDSet *fds, const char *key, int fd) { | |
3177 | int copy; | |
3178 | ||
3179 | assert(u); | |
3180 | assert(f); | |
3181 | assert(key); | |
3182 | ||
3183 | if (fd < 0) | |
3184 | return 0; | |
3185 | ||
3186 | copy = fdset_put_dup(fds, fd); | |
3187 | if (copy < 0) | |
3188 | return copy; | |
3189 | ||
3190 | fprintf(f, "%s=%i\n", key, copy); | |
3191 | return 1; | |
3192 | } | |
3193 | ||
a16e1123 LP |
3194 | void unit_serialize_item_format(Unit *u, FILE *f, const char *key, const char *format, ...) { |
3195 | va_list ap; | |
3196 | ||
3197 | assert(u); | |
3198 | assert(f); | |
3199 | assert(key); | |
3200 | assert(format); | |
3201 | ||
3202 | fputs(key, f); | |
3203 | fputc('=', f); | |
3204 | ||
3205 | va_start(ap, format); | |
3206 | vfprintf(f, format, ap); | |
3207 | va_end(ap); | |
3208 | ||
3209 | fputc('\n', f); | |
3210 | } | |
3211 | ||
a16e1123 | 3212 | int unit_deserialize(Unit *u, FILE *f, FDSet *fds) { |
28b99ccd | 3213 | ExecRuntime **rt = NULL; |
9bdb98c5 | 3214 | size_t offset; |
a16e1123 LP |
3215 | int r; |
3216 | ||
3217 | assert(u); | |
3218 | assert(f); | |
3219 | assert(fds); | |
3220 | ||
613b411c LP |
3221 | offset = UNIT_VTABLE(u)->exec_runtime_offset; |
3222 | if (offset > 0) | |
3223 | rt = (ExecRuntime**) ((uint8_t*) u + offset); | |
3224 | ||
a16e1123 | 3225 | for (;;) { |
20c03b7b | 3226 | char line[LINE_MAX], *l, *v; |
6b659ed8 | 3227 | CGroupIPAccountingMetric m; |
a16e1123 LP |
3228 | size_t k; |
3229 | ||
3230 | if (!fgets(line, sizeof(line), f)) { | |
3231 | if (feof(f)) | |
3232 | return 0; | |
3233 | return -errno; | |
3234 | } | |
3235 | ||
10f8e83c | 3236 | char_array_0(line); |
a16e1123 LP |
3237 | l = strstrip(line); |
3238 | ||
3239 | /* End marker */ | |
e911de99 | 3240 | if (isempty(l)) |
a483fb59 | 3241 | break; |
a16e1123 LP |
3242 | |
3243 | k = strcspn(l, "="); | |
3244 | ||
3245 | if (l[k] == '=') { | |
3246 | l[k] = 0; | |
3247 | v = l+k+1; | |
3248 | } else | |
3249 | v = l+k; | |
3250 | ||
cca098b0 | 3251 | if (streq(l, "job")) { |
39a18c60 MS |
3252 | if (v[0] == '\0') { |
3253 | /* new-style serialized job */ | |
9c3349e2 LP |
3254 | Job *j; |
3255 | ||
3256 | j = job_new_raw(u); | |
39a18c60 | 3257 | if (!j) |
e911de99 | 3258 | return log_oom(); |
39a18c60 | 3259 | |
05a98afd | 3260 | r = job_deserialize(j, f); |
39a18c60 MS |
3261 | if (r < 0) { |
3262 | job_free(j); | |
3263 | return r; | |
3264 | } | |
cca098b0 | 3265 | |
39a18c60 MS |
3266 | r = hashmap_put(u->manager->jobs, UINT32_TO_PTR(j->id), j); |
3267 | if (r < 0) { | |
3268 | job_free(j); | |
3269 | return r; | |
3270 | } | |
e0209d83 MS |
3271 | |
3272 | r = job_install_deserialized(j); | |
3273 | if (r < 0) { | |
3274 | hashmap_remove(u->manager->jobs, UINT32_TO_PTR(j->id)); | |
3275 | job_free(j); | |
3276 | return r; | |
3277 | } | |
ed10fa8c LP |
3278 | } else /* legacy for pre-44 */ |
3279 | log_unit_warning(u, "Update from too old systemd versions are unsupported, cannot deserialize job: %s", v); | |
cca098b0 | 3280 | continue; |
a483fb59 LP |
3281 | } else if (streq(l, "state-change-timestamp")) { |
3282 | dual_timestamp_deserialize(v, &u->state_change_timestamp); | |
3283 | continue; | |
8aaf019b | 3284 | } else if (streq(l, "inactive-exit-timestamp")) { |
ac155bb8 | 3285 | dual_timestamp_deserialize(v, &u->inactive_exit_timestamp); |
8aaf019b LP |
3286 | continue; |
3287 | } else if (streq(l, "active-enter-timestamp")) { | |
ac155bb8 | 3288 | dual_timestamp_deserialize(v, &u->active_enter_timestamp); |
8aaf019b LP |
3289 | continue; |
3290 | } else if (streq(l, "active-exit-timestamp")) { | |
ac155bb8 | 3291 | dual_timestamp_deserialize(v, &u->active_exit_timestamp); |
8aaf019b LP |
3292 | continue; |
3293 | } else if (streq(l, "inactive-enter-timestamp")) { | |
ac155bb8 | 3294 | dual_timestamp_deserialize(v, &u->inactive_enter_timestamp); |
8aaf019b | 3295 | continue; |
2791a8f8 | 3296 | } else if (streq(l, "condition-timestamp")) { |
ac155bb8 | 3297 | dual_timestamp_deserialize(v, &u->condition_timestamp); |
2791a8f8 | 3298 | continue; |
59fccdc5 LP |
3299 | } else if (streq(l, "assert-timestamp")) { |
3300 | dual_timestamp_deserialize(v, &u->assert_timestamp); | |
3301 | continue; | |
2791a8f8 | 3302 | } else if (streq(l, "condition-result")) { |
2791a8f8 | 3303 | |
e911de99 LP |
3304 | r = parse_boolean(v); |
3305 | if (r < 0) | |
f2341e0a | 3306 | log_unit_debug(u, "Failed to parse condition result value %s, ignoring.", v); |
2791a8f8 | 3307 | else |
e911de99 | 3308 | u->condition_result = r; |
efbac6d2 LP |
3309 | |
3310 | continue; | |
c2756a68 | 3311 | |
59fccdc5 | 3312 | } else if (streq(l, "assert-result")) { |
59fccdc5 | 3313 | |
e911de99 LP |
3314 | r = parse_boolean(v); |
3315 | if (r < 0) | |
f2341e0a | 3316 | log_unit_debug(u, "Failed to parse assert result value %s, ignoring.", v); |
59fccdc5 | 3317 | else |
e911de99 | 3318 | u->assert_result = r; |
59fccdc5 LP |
3319 | |
3320 | continue; | |
3321 | ||
c2756a68 | 3322 | } else if (streq(l, "transient")) { |
c2756a68 | 3323 | |
e911de99 LP |
3324 | r = parse_boolean(v); |
3325 | if (r < 0) | |
f2341e0a | 3326 | log_unit_debug(u, "Failed to parse transient bool %s, ignoring.", v); |
c2756a68 | 3327 | else |
e911de99 | 3328 | u->transient = r; |
c2756a68 LP |
3329 | |
3330 | continue; | |
e911de99 | 3331 | |
fe700f46 | 3332 | } else if (STR_IN_SET(l, "cpu-usage-base", "cpuacct-usage-base")) { |
5ad096b3 | 3333 | |
66ebf6c0 | 3334 | r = safe_atou64(v, &u->cpu_usage_base); |
5ad096b3 | 3335 | if (r < 0) |
fe700f46 LP |
3336 | log_unit_debug(u, "Failed to parse CPU usage base %s, ignoring.", v); |
3337 | ||
3338 | continue; | |
3339 | ||
3340 | } else if (streq(l, "cpu-usage-last")) { | |
3341 | ||
3342 | r = safe_atou64(v, &u->cpu_usage_last); | |
3343 | if (r < 0) | |
3344 | log_unit_debug(u, "Failed to read CPU usage last %s, ignoring.", v); | |
5ad096b3 | 3345 | |
0f908397 | 3346 | continue; |
4e595329 | 3347 | |
e911de99 | 3348 | } else if (streq(l, "cgroup")) { |
72673e86 | 3349 | |
e911de99 LP |
3350 | r = unit_set_cgroup_path(u, v); |
3351 | if (r < 0) | |
f2341e0a | 3352 | log_unit_debug_errno(u, r, "Failed to set cgroup path %s, ignoring: %m", v); |
4e595329 | 3353 | |
efdb0237 LP |
3354 | (void) unit_watch_cgroup(u); |
3355 | ||
de1d4f9b WF |
3356 | continue; |
3357 | } else if (streq(l, "cgroup-realized")) { | |
3358 | int b; | |
3359 | ||
3360 | b = parse_boolean(v); | |
3361 | if (b < 0) | |
3362 | log_unit_debug(u, "Failed to parse cgroup-realized bool %s, ignoring.", v); | |
3363 | else | |
3364 | u->cgroup_realized = b; | |
3365 | ||
c2756a68 | 3366 | continue; |
00d9ef85 | 3367 | |
8b108bd0 FB |
3368 | } else if (streq(l, "cgroup-realized-mask")) { |
3369 | ||
3370 | r = cg_mask_from_string(v, &u->cgroup_realized_mask); | |
3371 | if (r < 0) | |
3372 | log_unit_debug(u, "Failed to parse cgroup-realized-mask %s, ignoring.", v); | |
3373 | continue; | |
3374 | ||
3375 | } else if (streq(l, "cgroup-enabled-mask")) { | |
3376 | ||
3377 | r = cg_mask_from_string(v, &u->cgroup_enabled_mask); | |
3378 | if (r < 0) | |
3379 | log_unit_debug(u, "Failed to parse cgroup-enabled-mask %s, ignoring.", v); | |
3380 | continue; | |
3381 | ||
906c06f6 DM |
3382 | } else if (streq(l, "cgroup-bpf-realized")) { |
3383 | int i; | |
3384 | ||
3385 | r = safe_atoi(v, &i); | |
3386 | if (r < 0) | |
3387 | log_unit_debug(u, "Failed to parse cgroup BPF state %s, ignoring.", v); | |
3388 | else | |
3389 | u->cgroup_bpf_state = | |
3390 | i < 0 ? UNIT_CGROUP_BPF_INVALIDATED : | |
3391 | i > 0 ? UNIT_CGROUP_BPF_ON : | |
3392 | UNIT_CGROUP_BPF_OFF; | |
3393 | ||
3394 | continue; | |
3395 | ||
00d9ef85 LP |
3396 | } else if (streq(l, "ref-uid")) { |
3397 | uid_t uid; | |
3398 | ||
3399 | r = parse_uid(v, &uid); | |
3400 | if (r < 0) | |
3401 | log_unit_debug(u, "Failed to parse referenced UID %s, ignoring.", v); | |
3402 | else | |
3403 | unit_ref_uid_gid(u, uid, GID_INVALID); | |
3404 | ||
3405 | continue; | |
3406 | ||
3407 | } else if (streq(l, "ref-gid")) { | |
3408 | gid_t gid; | |
3409 | ||
3410 | r = parse_gid(v, &gid); | |
3411 | if (r < 0) | |
3412 | log_unit_debug(u, "Failed to parse referenced GID %s, ignoring.", v); | |
3413 | else | |
3414 | unit_ref_uid_gid(u, UID_INVALID, gid); | |
3415 | ||
05a98afd LP |
3416 | } else if (streq(l, "ref")) { |
3417 | ||
3418 | r = strv_extend(&u->deserialized_refs, v); | |
3419 | if (r < 0) | |
3420 | log_oom(); | |
3421 | ||
4b58153d LP |
3422 | continue; |
3423 | } else if (streq(l, "invocation-id")) { | |
3424 | sd_id128_t id; | |
3425 | ||
3426 | r = sd_id128_from_string(v, &id); | |
3427 | if (r < 0) | |
3428 | log_unit_debug(u, "Failed to parse invocation id %s, ignoring.", v); | |
3429 | else { | |
3430 | r = unit_set_invocation_id(u, id); | |
3431 | if (r < 0) | |
3432 | log_unit_warning_errno(u, r, "Failed to set invocation ID for unit: %m"); | |
3433 | } | |
3434 | ||
00d9ef85 | 3435 | continue; |
8aaf019b | 3436 | } |
cca098b0 | 3437 | |
6b659ed8 LP |
3438 | /* Check if this is an IP accounting metric serialization field */ |
3439 | for (m = 0; m < _CGROUP_IP_ACCOUNTING_METRIC_MAX; m++) | |
3440 | if (streq(l, ip_accounting_metric_field[m])) | |
3441 | break; | |
3442 | if (m < _CGROUP_IP_ACCOUNTING_METRIC_MAX) { | |
3443 | uint64_t c; | |
3444 | ||
3445 | r = safe_atou64(v, &c); | |
3446 | if (r < 0) | |
3447 | log_unit_debug(u, "Failed to parse IP accounting value %s, ignoring.", v); | |
3448 | else | |
3449 | u->ip_accounting_extra[m] = c; | |
3450 | continue; | |
3451 | } | |
3452 | ||
9bdb98c5 LP |
3453 | if (unit_can_serialize(u)) { |
3454 | if (rt) { | |
f2341e0a | 3455 | r = exec_runtime_deserialize_item(u, rt, l, v, fds); |
e911de99 | 3456 | if (r < 0) { |
f2341e0a | 3457 | log_unit_warning(u, "Failed to deserialize runtime parameter '%s', ignoring.", l); |
e911de99 LP |
3458 | continue; |
3459 | } | |
3460 | ||
3461 | /* Returns positive if key was handled by the call */ | |
9bdb98c5 LP |
3462 | if (r > 0) |
3463 | continue; | |
3464 | } | |
3465 | ||
3466 | r = UNIT_VTABLE(u)->deserialize_item(u, l, v, fds); | |
613b411c | 3467 | if (r < 0) |
f2341e0a | 3468 | log_unit_warning(u, "Failed to deserialize unit parameter '%s', ignoring.", l); |
613b411c | 3469 | } |
a16e1123 | 3470 | } |
a483fb59 LP |
3471 | |
3472 | /* Versions before 228 did not carry a state change timestamp. In this case, take the current time. This is | |
3473 | * useful, so that timeouts based on this timestamp don't trigger too early, and is in-line with the logic from | |
1f133e0d | 3474 | * before 228 where the base for timeouts was not persistent across reboots. */ |
a483fb59 LP |
3475 | |
3476 | if (!dual_timestamp_is_set(&u->state_change_timestamp)) | |
3477 | dual_timestamp_get(&u->state_change_timestamp); | |
3478 | ||
58d83430 LP |
3479 | /* Let's make sure that everything that is deserialized also gets any potential new cgroup settings applied |
3480 | * after we are done. For that we invalidate anything already realized, so that we can realize it again. */ | |
3481 | unit_invalidate_cgroup(u, _CGROUP_MASK_ALL); | |
3482 | unit_invalidate_cgroup_bpf(u); | |
3483 | ||
a483fb59 | 3484 | return 0; |
a16e1123 LP |
3485 | } |
3486 | ||
07429866 ZJS |
3487 | void unit_deserialize_skip(FILE *f) { |
3488 | assert(f); | |
3489 | ||
3490 | /* Skip serialized data for this unit. We don't know what it is. */ | |
3491 | ||
3492 | for (;;) { | |
3493 | char line[LINE_MAX], *l; | |
3494 | ||
3495 | if (!fgets(line, sizeof line, f)) | |
3496 | return; | |
3497 | ||
3498 | char_array_0(line); | |
3499 | l = strstrip(line); | |
3500 | ||
3501 | /* End marker */ | |
3502 | if (isempty(l)) | |
3503 | return; | |
3504 | } | |
3505 | } | |
3506 | ||
3507 | ||
eef85c4a | 3508 | int unit_add_node_dependency(Unit *u, const char *what, bool wants, UnitDependency dep, UnitDependencyMask mask) { |
6e2ef85b | 3509 | Unit *device; |
68eda4bd | 3510 | _cleanup_free_ char *e = NULL; |
6e2ef85b LP |
3511 | int r; |
3512 | ||
3513 | assert(u); | |
3514 | ||
6e2ef85b | 3515 | /* Adds in links to the device node that this unit is based on */ |
47bc12e1 LP |
3516 | if (isempty(what)) |
3517 | return 0; | |
6e2ef85b | 3518 | |
8407a5d0 | 3519 | if (!is_device_path(what)) |
6e2ef85b LP |
3520 | return 0; |
3521 | ||
47bc12e1 LP |
3522 | /* When device units aren't supported (such as in a |
3523 | * container), don't create dependencies on them. */ | |
1c2e9646 | 3524 | if (!unit_type_supported(UNIT_DEVICE)) |
47bc12e1 LP |
3525 | return 0; |
3526 | ||
7410616c LP |
3527 | r = unit_name_from_path(what, ".device", &e); |
3528 | if (r < 0) | |
3529 | return r; | |
6e2ef85b | 3530 | |
ac155bb8 | 3531 | r = manager_load_unit(u->manager, e, NULL, NULL, &device); |
6e2ef85b LP |
3532 | if (r < 0) |
3533 | return r; | |
3534 | ||
ebc8968b FB |
3535 | if (dep == UNIT_REQUIRES && device_shall_be_bound_by(device, u)) |
3536 | dep = UNIT_BINDS_TO; | |
3537 | ||
9d06297e | 3538 | r = unit_add_two_dependencies(u, UNIT_AFTER, |
463d0d15 | 3539 | MANAGER_IS_SYSTEM(u->manager) ? dep : UNIT_WANTS, |
eef85c4a | 3540 | device, true, mask); |
faa368e3 | 3541 | if (r < 0) |
6e2ef85b LP |
3542 | return r; |
3543 | ||
faa368e3 | 3544 | if (wants) { |
eef85c4a | 3545 | r = unit_add_dependency(device, UNIT_WANTS, u, false, mask); |
faa368e3 | 3546 | if (r < 0) |
6e2ef85b | 3547 | return r; |
faa368e3 | 3548 | } |
6e2ef85b LP |
3549 | |
3550 | return 0; | |
3551 | } | |
a16e1123 | 3552 | |
be847e82 | 3553 | int unit_coldplug(Unit *u) { |
05a98afd LP |
3554 | int r = 0, q; |
3555 | char **i; | |
cca098b0 LP |
3556 | |
3557 | assert(u); | |
3558 | ||
f78f265f LP |
3559 | /* Make sure we don't enter a loop, when coldplugging |
3560 | * recursively. */ | |
3561 | if (u->coldplugged) | |
3562 | return 0; | |
3563 | ||
3564 | u->coldplugged = true; | |
3565 | ||
05a98afd LP |
3566 | STRV_FOREACH(i, u->deserialized_refs) { |
3567 | q = bus_unit_track_add_name(u, *i); | |
3568 | if (q < 0 && r >= 0) | |
3569 | r = q; | |
3570 | } | |
3571 | u->deserialized_refs = strv_free(u->deserialized_refs); | |
cca098b0 | 3572 | |
05a98afd LP |
3573 | if (UNIT_VTABLE(u)->coldplug) { |
3574 | q = UNIT_VTABLE(u)->coldplug(u); | |
3575 | if (q < 0 && r >= 0) | |
3576 | r = q; | |
3577 | } | |
5a6158b6 | 3578 | |
05a98afd LP |
3579 | if (u->job) { |
3580 | q = job_coldplug(u->job); | |
3581 | if (q < 0 && r >= 0) | |
3582 | r = q; | |
3583 | } | |
cca098b0 | 3584 | |
05a98afd | 3585 | return r; |
cca098b0 LP |
3586 | } |
3587 | ||
ba25d39e | 3588 | static bool fragment_mtime_newer(const char *path, usec_t mtime, bool path_masked) { |
21b95806 ZJS |
3589 | struct stat st; |
3590 | ||
3591 | if (!path) | |
3592 | return false; | |
3593 | ||
77969722 LP |
3594 | /* If the source is some virtual kernel file system, then we assume we watch it anyway, and hence pretend we |
3595 | * are never out-of-date. */ | |
3596 | if (PATH_STARTSWITH_SET(path, "/proc", "/sys")) | |
3597 | return false; | |
3598 | ||
21b95806 ZJS |
3599 | if (stat(path, &st) < 0) |
3600 | /* What, cannot access this anymore? */ | |
3601 | return true; | |
3602 | ||
ba25d39e ZJS |
3603 | if (path_masked) |
3604 | /* For masked files check if they are still so */ | |
3605 | return !null_or_empty(&st); | |
3606 | else | |
3a8db9fe | 3607 | /* For non-empty files check the mtime */ |
87ec20ef | 3608 | return timespec_load(&st.st_mtim) > mtime; |
21b95806 ZJS |
3609 | |
3610 | return false; | |
3611 | } | |
3612 | ||
45fb0699 | 3613 | bool unit_need_daemon_reload(Unit *u) { |
ae7a7182 OS |
3614 | _cleanup_strv_free_ char **t = NULL; |
3615 | char **path; | |
1b64d026 | 3616 | |
45fb0699 LP |
3617 | assert(u); |
3618 | ||
ba25d39e ZJS |
3619 | /* For unit files, we allow masking… */ |
3620 | if (fragment_mtime_newer(u->fragment_path, u->fragment_mtime, | |
3621 | u->load_state == UNIT_MASKED)) | |
21b95806 | 3622 | return true; |
5f4b19f4 | 3623 | |
ba25d39e ZJS |
3624 | /* Source paths should not be masked… */ |
3625 | if (fragment_mtime_newer(u->source_path, u->source_mtime, false)) | |
ab932a62 | 3626 | return true; |
ae7a7182 | 3627 | |
19a44dfe LR |
3628 | if (u->load_state == UNIT_LOADED) |
3629 | (void) unit_find_dropin_paths(u, &t); | |
ab932a62 LP |
3630 | if (!strv_equal(u->dropin_paths, t)) |
3631 | return true; | |
6d10d308 | 3632 | |
ba25d39e | 3633 | /* … any drop-ins that are masked are simply omitted from the list. */ |
ab932a62 | 3634 | STRV_FOREACH(path, u->dropin_paths) |
ba25d39e | 3635 | if (fragment_mtime_newer(*path, u->dropin_mtime, false)) |
ab932a62 | 3636 | return true; |
21b95806 | 3637 | |
ab932a62 | 3638 | return false; |
45fb0699 LP |
3639 | } |
3640 | ||
fdf20a31 | 3641 | void unit_reset_failed(Unit *u) { |
5632e374 LP |
3642 | assert(u); |
3643 | ||
fdf20a31 MM |
3644 | if (UNIT_VTABLE(u)->reset_failed) |
3645 | UNIT_VTABLE(u)->reset_failed(u); | |
6bf0f408 LP |
3646 | |
3647 | RATELIMIT_RESET(u->start_limit); | |
3648 | u->start_limit_hit = false; | |
5632e374 LP |
3649 | } |
3650 | ||
a7f241db LP |
3651 | Unit *unit_following(Unit *u) { |
3652 | assert(u); | |
3653 | ||
3654 | if (UNIT_VTABLE(u)->following) | |
3655 | return UNIT_VTABLE(u)->following(u); | |
3656 | ||
3657 | return NULL; | |
3658 | } | |
3659 | ||
31afa0a4 | 3660 | bool unit_stop_pending(Unit *u) { |
18ffdfda LP |
3661 | assert(u); |
3662 | ||
31afa0a4 LP |
3663 | /* This call does check the current state of the unit. It's |
3664 | * hence useful to be called from state change calls of the | |
3665 | * unit itself, where the state isn't updated yet. This is | |
3666 | * different from unit_inactive_or_pending() which checks both | |
3667 | * the current state and for a queued job. */ | |
18ffdfda | 3668 | |
31afa0a4 LP |
3669 | return u->job && u->job->type == JOB_STOP; |
3670 | } | |
3671 | ||
3672 | bool unit_inactive_or_pending(Unit *u) { | |
3673 | assert(u); | |
3674 | ||
3675 | /* Returns true if the unit is inactive or going down */ | |
18ffdfda | 3676 | |
d956ac29 LP |
3677 | if (UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))) |
3678 | return true; | |
3679 | ||
31afa0a4 | 3680 | if (unit_stop_pending(u)) |
18ffdfda LP |
3681 | return true; |
3682 | ||
3683 | return false; | |
3684 | } | |
3685 | ||
31afa0a4 | 3686 | bool unit_active_or_pending(Unit *u) { |
f976f3f6 LP |
3687 | assert(u); |
3688 | ||
f60c2665 | 3689 | /* Returns true if the unit is active or going up */ |
f976f3f6 LP |
3690 | |
3691 | if (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) | |
3692 | return true; | |
3693 | ||
ac155bb8 | 3694 | if (u->job && |
3742095b | 3695 | IN_SET(u->job->type, JOB_START, JOB_RELOAD_OR_START, JOB_RESTART)) |
f976f3f6 LP |
3696 | return true; |
3697 | ||
3698 | return false; | |
3699 | } | |
3700 | ||
718db961 | 3701 | int unit_kill(Unit *u, KillWho w, int signo, sd_bus_error *error) { |
8a0867d6 LP |
3702 | assert(u); |
3703 | assert(w >= 0 && w < _KILL_WHO_MAX); | |
6eb7c172 | 3704 | assert(SIGNAL_VALID(signo)); |
8a0867d6 | 3705 | |
8a0867d6 | 3706 | if (!UNIT_VTABLE(u)->kill) |
15411c0c | 3707 | return -EOPNOTSUPP; |
8a0867d6 | 3708 | |
c74f17d9 | 3709 | return UNIT_VTABLE(u)->kill(u, w, signo, error); |
8a0867d6 LP |
3710 | } |
3711 | ||
82659fd7 LP |
3712 | static Set *unit_pid_set(pid_t main_pid, pid_t control_pid) { |
3713 | Set *pid_set; | |
3714 | int r; | |
3715 | ||
d5099efc | 3716 | pid_set = set_new(NULL); |
82659fd7 LP |
3717 | if (!pid_set) |
3718 | return NULL; | |
3719 | ||
3720 | /* Exclude the main/control pids from being killed via the cgroup */ | |
3721 | if (main_pid > 0) { | |
fea72cc0 | 3722 | r = set_put(pid_set, PID_TO_PTR(main_pid)); |
82659fd7 LP |
3723 | if (r < 0) |
3724 | goto fail; | |
3725 | } | |
3726 | ||
3727 | if (control_pid > 0) { | |
fea72cc0 | 3728 | r = set_put(pid_set, PID_TO_PTR(control_pid)); |
82659fd7 LP |
3729 | if (r < 0) |
3730 | goto fail; | |
3731 | } | |
3732 | ||
3733 | return pid_set; | |
3734 | ||
3735 | fail: | |
3736 | set_free(pid_set); | |
3737 | return NULL; | |
3738 | } | |
3739 | ||
d91c34f2 LP |
3740 | int unit_kill_common( |
3741 | Unit *u, | |
3742 | KillWho who, | |
3743 | int signo, | |
3744 | pid_t main_pid, | |
3745 | pid_t control_pid, | |
718db961 | 3746 | sd_bus_error *error) { |
d91c34f2 | 3747 | |
814cc562 | 3748 | int r = 0; |
ac5e3a50 | 3749 | bool killed = false; |
814cc562 | 3750 | |
ac5e3a50 | 3751 | if (IN_SET(who, KILL_MAIN, KILL_MAIN_FAIL)) { |
814cc562 | 3752 | if (main_pid < 0) |
7358dc02 | 3753 | return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_PROCESS, "%s units have no main processes", unit_type_to_string(u->type)); |
52f448c3 | 3754 | else if (main_pid == 0) |
7358dc02 | 3755 | return sd_bus_error_set_const(error, BUS_ERROR_NO_SUCH_PROCESS, "No main process to kill"); |
814cc562 MS |
3756 | } |
3757 | ||
ac5e3a50 | 3758 | if (IN_SET(who, KILL_CONTROL, KILL_CONTROL_FAIL)) { |
814cc562 | 3759 | if (control_pid < 0) |
7358dc02 | 3760 | return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_PROCESS, "%s units have no control processes", unit_type_to_string(u->type)); |
52f448c3 | 3761 | else if (control_pid == 0) |
7358dc02 | 3762 | return sd_bus_error_set_const(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill"); |
814cc562 MS |
3763 | } |
3764 | ||
ac5e3a50 JS |
3765 | if (IN_SET(who, KILL_CONTROL, KILL_CONTROL_FAIL, KILL_ALL, KILL_ALL_FAIL)) |
3766 | if (control_pid > 0) { | |
814cc562 MS |
3767 | if (kill(control_pid, signo) < 0) |
3768 | r = -errno; | |
ac5e3a50 JS |
3769 | else |
3770 | killed = true; | |
3771 | } | |
814cc562 | 3772 | |
ac5e3a50 JS |
3773 | if (IN_SET(who, KILL_MAIN, KILL_MAIN_FAIL, KILL_ALL, KILL_ALL_FAIL)) |
3774 | if (main_pid > 0) { | |
814cc562 MS |
3775 | if (kill(main_pid, signo) < 0) |
3776 | r = -errno; | |
ac5e3a50 JS |
3777 | else |
3778 | killed = true; | |
3779 | } | |
814cc562 | 3780 | |
ac5e3a50 | 3781 | if (IN_SET(who, KILL_ALL, KILL_ALL_FAIL) && u->cgroup_path) { |
814cc562 MS |
3782 | _cleanup_set_free_ Set *pid_set = NULL; |
3783 | int q; | |
3784 | ||
82659fd7 LP |
3785 | /* Exclude the main/control pids from being killed via the cgroup */ |
3786 | pid_set = unit_pid_set(main_pid, control_pid); | |
814cc562 MS |
3787 | if (!pid_set) |
3788 | return -ENOMEM; | |
3789 | ||
1d98fef1 | 3790 | q = cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, signo, 0, pid_set, NULL, NULL); |
4c701096 | 3791 | if (q < 0 && !IN_SET(q, -EAGAIN, -ESRCH, -ENOENT)) |
814cc562 | 3792 | r = q; |
ac5e3a50 JS |
3793 | else |
3794 | killed = true; | |
814cc562 MS |
3795 | } |
3796 | ||
201f0c91 | 3797 | if (r == 0 && !killed && IN_SET(who, KILL_ALL_FAIL, KILL_CONTROL_FAIL)) |
ac5e3a50 JS |
3798 | return -ESRCH; |
3799 | ||
814cc562 MS |
3800 | return r; |
3801 | } | |
3802 | ||
6210e7fc LP |
3803 | int unit_following_set(Unit *u, Set **s) { |
3804 | assert(u); | |
3805 | assert(s); | |
3806 | ||
3807 | if (UNIT_VTABLE(u)->following_set) | |
3808 | return UNIT_VTABLE(u)->following_set(u, s); | |
3809 | ||
3810 | *s = NULL; | |
3811 | return 0; | |
3812 | } | |
3813 | ||
a4375746 | 3814 | UnitFileState unit_get_unit_file_state(Unit *u) { |
0ec0deaa LP |
3815 | int r; |
3816 | ||
a4375746 LP |
3817 | assert(u); |
3818 | ||
0ec0deaa LP |
3819 | if (u->unit_file_state < 0 && u->fragment_path) { |
3820 | r = unit_file_get_state( | |
463d0d15 | 3821 | u->manager->unit_file_scope, |
0ec0deaa LP |
3822 | NULL, |
3823 | basename(u->fragment_path), | |
3824 | &u->unit_file_state); | |
3825 | if (r < 0) | |
3826 | u->unit_file_state = UNIT_FILE_BAD; | |
3827 | } | |
a4375746 | 3828 | |
ac155bb8 | 3829 | return u->unit_file_state; |
a4375746 LP |
3830 | } |
3831 | ||
d2dc52db LP |
3832 | int unit_get_unit_file_preset(Unit *u) { |
3833 | assert(u); | |
3834 | ||
3835 | if (u->unit_file_preset < 0 && u->fragment_path) | |
3836 | u->unit_file_preset = unit_file_query_preset( | |
463d0d15 | 3837 | u->manager->unit_file_scope, |
0ec0deaa LP |
3838 | NULL, |
3839 | basename(u->fragment_path)); | |
d2dc52db LP |
3840 | |
3841 | return u->unit_file_preset; | |
3842 | } | |
3843 | ||
57020a3a LP |
3844 | Unit* unit_ref_set(UnitRef *ref, Unit *u) { |
3845 | assert(ref); | |
3846 | assert(u); | |
3847 | ||
3848 | if (ref->unit) | |
3849 | unit_ref_unset(ref); | |
3850 | ||
3851 | ref->unit = u; | |
71fda00f | 3852 | LIST_PREPEND(refs, u->refs, ref); |
57020a3a LP |
3853 | return u; |
3854 | } | |
3855 | ||
3856 | void unit_ref_unset(UnitRef *ref) { | |
3857 | assert(ref); | |
3858 | ||
3859 | if (!ref->unit) | |
3860 | return; | |
3861 | ||
b75102e5 LP |
3862 | /* We are about to drop a reference to the unit, make sure the garbage collection has a look at it as it might |
3863 | * be unreferenced now. */ | |
3864 | unit_add_to_gc_queue(ref->unit); | |
3865 | ||
71fda00f | 3866 | LIST_REMOVE(refs, ref->unit->refs, ref); |
57020a3a LP |
3867 | ref->unit = NULL; |
3868 | } | |
3869 | ||
29206d46 LP |
3870 | static int user_from_unit_name(Unit *u, char **ret) { |
3871 | ||
3872 | static const uint8_t hash_key[] = { | |
3873 | 0x58, 0x1a, 0xaf, 0xe6, 0x28, 0x58, 0x4e, 0x96, | |
3874 | 0xb4, 0x4e, 0xf5, 0x3b, 0x8c, 0x92, 0x07, 0xec | |
3875 | }; | |
3876 | ||
3877 | _cleanup_free_ char *n = NULL; | |
3878 | int r; | |
3879 | ||
3880 | r = unit_name_to_prefix(u->id, &n); | |
3881 | if (r < 0) | |
3882 | return r; | |
3883 | ||
3884 | if (valid_user_group_name(n)) { | |
3885 | *ret = n; | |
3886 | n = NULL; | |
3887 | return 0; | |
3888 | } | |
3889 | ||
3890 | /* If we can't use the unit name as a user name, then let's hash it and use that */ | |
3891 | if (asprintf(ret, "_du%016" PRIx64, siphash24(n, strlen(n), hash_key)) < 0) | |
3892 | return -ENOMEM; | |
3893 | ||
3894 | return 0; | |
3895 | } | |
3896 | ||
598459ce LP |
3897 | int unit_patch_contexts(Unit *u) { |
3898 | CGroupContext *cc; | |
3899 | ExecContext *ec; | |
cba6e062 LP |
3900 | unsigned i; |
3901 | int r; | |
3902 | ||
e06c73cc | 3903 | assert(u); |
e06c73cc | 3904 | |
598459ce LP |
3905 | /* Patch in the manager defaults into the exec and cgroup |
3906 | * contexts, _after_ the rest of the settings have been | |
3907 | * initialized */ | |
085afe36 | 3908 | |
598459ce LP |
3909 | ec = unit_get_exec_context(u); |
3910 | if (ec) { | |
3911 | /* This only copies in the ones that need memory */ | |
3912 | for (i = 0; i < _RLIMIT_MAX; i++) | |
3913 | if (u->manager->rlimit[i] && !ec->rlimit[i]) { | |
3914 | ec->rlimit[i] = newdup(struct rlimit, u->manager->rlimit[i], 1); | |
3915 | if (!ec->rlimit[i]) | |
3916 | return -ENOMEM; | |
3917 | } | |
3918 | ||
463d0d15 | 3919 | if (MANAGER_IS_USER(u->manager) && |
598459ce LP |
3920 | !ec->working_directory) { |
3921 | ||
3922 | r = get_home_dir(&ec->working_directory); | |
3923 | if (r < 0) | |
3924 | return r; | |
4c08c824 LP |
3925 | |
3926 | /* Allow user services to run, even if the | |
3927 | * home directory is missing */ | |
3928 | ec->working_directory_missing_ok = true; | |
cba6e062 LP |
3929 | } |
3930 | ||
598459ce | 3931 | if (ec->private_devices) |
2cd0a735 | 3932 | ec->capability_bounding_set &= ~((UINT64_C(1) << CAP_MKNOD) | (UINT64_C(1) << CAP_SYS_RAWIO)); |
502d704e DH |
3933 | |
3934 | if (ec->protect_kernel_modules) | |
3935 | ec->capability_bounding_set &= ~(UINT64_C(1) << CAP_SYS_MODULE); | |
29206d46 LP |
3936 | |
3937 | if (ec->dynamic_user) { | |
3938 | if (!ec->user) { | |
3939 | r = user_from_unit_name(u, &ec->user); | |
3940 | if (r < 0) | |
3941 | return r; | |
3942 | } | |
3943 | ||
3944 | if (!ec->group) { | |
3945 | ec->group = strdup(ec->user); | |
3946 | if (!ec->group) | |
3947 | return -ENOMEM; | |
3948 | } | |
3949 | ||
63bb64a0 LP |
3950 | /* If the dynamic user option is on, let's make sure that the unit can't leave its UID/GID |
3951 | * around in the file system or on IPC objects. Hence enforce a strict sandbox. */ | |
3952 | ||
29206d46 | 3953 | ec->private_tmp = true; |
00d9ef85 | 3954 | ec->remove_ipc = true; |
63bb64a0 LP |
3955 | ec->protect_system = PROTECT_SYSTEM_STRICT; |
3956 | if (ec->protect_home == PROTECT_HOME_NO) | |
3957 | ec->protect_home = PROTECT_HOME_READ_ONLY; | |
29206d46 | 3958 | } |
cba6e062 LP |
3959 | } |
3960 | ||
598459ce LP |
3961 | cc = unit_get_cgroup_context(u); |
3962 | if (cc) { | |
f513e420 | 3963 | |
598459ce LP |
3964 | if (ec && |
3965 | ec->private_devices && | |
3966 | cc->device_policy == CGROUP_AUTO) | |
3967 | cc->device_policy = CGROUP_CLOSED; | |
3968 | } | |
f1660f96 | 3969 | |
cba6e062 | 3970 | return 0; |
e06c73cc LP |
3971 | } |
3972 | ||
3ef63c31 LP |
3973 | ExecContext *unit_get_exec_context(Unit *u) { |
3974 | size_t offset; | |
3975 | assert(u); | |
3976 | ||
598459ce LP |
3977 | if (u->type < 0) |
3978 | return NULL; | |
3979 | ||
3ef63c31 LP |
3980 | offset = UNIT_VTABLE(u)->exec_context_offset; |
3981 | if (offset <= 0) | |
3982 | return NULL; | |
3983 | ||
3984 | return (ExecContext*) ((uint8_t*) u + offset); | |
3985 | } | |
3986 | ||
718db961 LP |
3987 | KillContext *unit_get_kill_context(Unit *u) { |
3988 | size_t offset; | |
3989 | assert(u); | |
3990 | ||
598459ce LP |
3991 | if (u->type < 0) |
3992 | return NULL; | |
3993 | ||
718db961 LP |
3994 | offset = UNIT_VTABLE(u)->kill_context_offset; |
3995 | if (offset <= 0) | |
3996 | return NULL; | |
3997 | ||
3998 | return (KillContext*) ((uint8_t*) u + offset); | |
3999 | } | |
4000 | ||
4ad49000 LP |
4001 | CGroupContext *unit_get_cgroup_context(Unit *u) { |
4002 | size_t offset; | |
4003 | ||
598459ce LP |
4004 | if (u->type < 0) |
4005 | return NULL; | |
4006 | ||
4ad49000 LP |
4007 | offset = UNIT_VTABLE(u)->cgroup_context_offset; |
4008 | if (offset <= 0) | |
4009 | return NULL; | |
4010 | ||
4011 | return (CGroupContext*) ((uint8_t*) u + offset); | |
4012 | } | |
4013 | ||
613b411c LP |
4014 | ExecRuntime *unit_get_exec_runtime(Unit *u) { |
4015 | size_t offset; | |
4016 | ||
598459ce LP |
4017 | if (u->type < 0) |
4018 | return NULL; | |
4019 | ||
613b411c LP |
4020 | offset = UNIT_VTABLE(u)->exec_runtime_offset; |
4021 | if (offset <= 0) | |
4022 | return NULL; | |
4023 | ||
4024 | return *(ExecRuntime**) ((uint8_t*) u + offset); | |
4025 | } | |
4026 | ||
39591351 | 4027 | static const char* unit_drop_in_dir(Unit *u, UnitSetPropertiesMode mode) { |
3f5e8115 LP |
4028 | assert(u); |
4029 | ||
4f4afc88 LP |
4030 | if (!IN_SET(mode, UNIT_RUNTIME, UNIT_PERSISTENT)) |
4031 | return NULL; | |
4032 | ||
39591351 LP |
4033 | if (u->transient) /* Redirect drop-ins for transient units always into the transient directory. */ |
4034 | return u->manager->lookup_paths.transient; | |
26d04f86 | 4035 | |
39591351 | 4036 | if (mode == UNIT_RUNTIME) |
4f4afc88 | 4037 | return u->manager->lookup_paths.runtime_control; |
3f5e8115 | 4038 | |
39591351 | 4039 | if (mode == UNIT_PERSISTENT) |
4f4afc88 | 4040 | return u->manager->lookup_paths.persistent_control; |
26d04f86 | 4041 | |
39591351 | 4042 | return NULL; |
71645aca LP |
4043 | } |
4044 | ||
8e2af478 | 4045 | int unit_write_drop_in(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data) { |
39591351 | 4046 | _cleanup_free_ char *p = NULL, *q = NULL; |
2a9a6f8a | 4047 | const char *dir, *wrapped; |
26d04f86 | 4048 | int r; |
71645aca LP |
4049 | |
4050 | assert(u); | |
4051 | ||
4f4afc88 LP |
4052 | if (u->transient_file) { |
4053 | /* When this is a transient unit file in creation, then let's not create a new drop-in but instead | |
4054 | * write to the transient unit file. */ | |
4055 | fputs(data, u->transient_file); | |
fc40065b | 4056 | fputc('\n', u->transient_file); |
4f4afc88 LP |
4057 | return 0; |
4058 | } | |
4059 | ||
6d235724 | 4060 | if (!IN_SET(mode, UNIT_PERSISTENT, UNIT_RUNTIME)) |
8e2af478 LP |
4061 | return 0; |
4062 | ||
39591351 LP |
4063 | dir = unit_drop_in_dir(u, mode); |
4064 | if (!dir) | |
4065 | return -EINVAL; | |
71645aca | 4066 | |
2a9a6f8a | 4067 | wrapped = strjoina("# This is a drop-in unit file extension, created via \"systemctl set-property\"\n" |
3f71dec5 | 4068 | "# or an equivalent operation. Do not edit.\n", |
2a9a6f8a ZJS |
4069 | data, |
4070 | "\n"); | |
e20b2a86 | 4071 | |
815b09d3 | 4072 | r = drop_in_file(dir, u->id, 50, name, &p, &q); |
adb76a70 WC |
4073 | if (r < 0) |
4074 | return r; | |
4075 | ||
815b09d3 | 4076 | (void) mkdir_p(p, 0755); |
2a9a6f8a | 4077 | r = write_string_file_atomic_label(q, wrapped); |
adb76a70 WC |
4078 | if (r < 0) |
4079 | return r; | |
4080 | ||
815b09d3 | 4081 | r = strv_push(&u->dropin_paths, q); |
adb76a70 WC |
4082 | if (r < 0) |
4083 | return r; | |
815b09d3 | 4084 | q = NULL; |
adb76a70 | 4085 | |
adb76a70 WC |
4086 | strv_uniq(u->dropin_paths); |
4087 | ||
4088 | u->dropin_mtime = now(CLOCK_REALTIME); | |
4089 | ||
4090 | return 0; | |
26d04f86 | 4091 | } |
71645aca | 4092 | |
b9ec9359 LP |
4093 | int unit_write_drop_in_format(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *format, ...) { |
4094 | _cleanup_free_ char *p = NULL; | |
4095 | va_list ap; | |
4096 | int r; | |
4097 | ||
4098 | assert(u); | |
4099 | assert(name); | |
4100 | assert(format); | |
4101 | ||
6d235724 | 4102 | if (!IN_SET(mode, UNIT_PERSISTENT, UNIT_RUNTIME)) |
b9ec9359 LP |
4103 | return 0; |
4104 | ||
4105 | va_start(ap, format); | |
4106 | r = vasprintf(&p, format, ap); | |
4107 | va_end(ap); | |
4108 | ||
4109 | if (r < 0) | |
4110 | return -ENOMEM; | |
4111 | ||
4112 | return unit_write_drop_in(u, mode, name, p); | |
4113 | } | |
4114 | ||
4115 | int unit_write_drop_in_private(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data) { | |
39591351 | 4116 | const char *ndata; |
b42defe3 LP |
4117 | |
4118 | assert(u); | |
4119 | assert(name); | |
4120 | assert(data); | |
4121 | ||
4122 | if (!UNIT_VTABLE(u)->private_section) | |
4123 | return -EINVAL; | |
4124 | ||
6d235724 | 4125 | if (!IN_SET(mode, UNIT_PERSISTENT, UNIT_RUNTIME)) |
b9ec9359 LP |
4126 | return 0; |
4127 | ||
81d62103 | 4128 | ndata = strjoina("[", UNIT_VTABLE(u)->private_section, "]\n", data); |
b42defe3 LP |
4129 | |
4130 | return unit_write_drop_in(u, mode, name, ndata); | |
4131 | } | |
4132 | ||
b9ec9359 LP |
4133 | int unit_write_drop_in_private_format(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *format, ...) { |
4134 | _cleanup_free_ char *p = NULL; | |
4135 | va_list ap; | |
4136 | int r; | |
4137 | ||
4138 | assert(u); | |
4139 | assert(name); | |
4140 | assert(format); | |
4141 | ||
6d235724 | 4142 | if (!IN_SET(mode, UNIT_PERSISTENT, UNIT_RUNTIME)) |
b9ec9359 LP |
4143 | return 0; |
4144 | ||
4145 | va_start(ap, format); | |
4146 | r = vasprintf(&p, format, ap); | |
4147 | va_end(ap); | |
4148 | ||
4149 | if (r < 0) | |
4150 | return -ENOMEM; | |
4151 | ||
4152 | return unit_write_drop_in_private(u, mode, name, p); | |
4153 | } | |
71645aca | 4154 | |
c2756a68 | 4155 | int unit_make_transient(Unit *u) { |
4f4afc88 LP |
4156 | FILE *f; |
4157 | char *path; | |
4158 | ||
c2756a68 LP |
4159 | assert(u); |
4160 | ||
3f5e8115 LP |
4161 | if (!UNIT_VTABLE(u)->can_transient) |
4162 | return -EOPNOTSUPP; | |
4163 | ||
605405c6 | 4164 | path = strjoin(u->manager->lookup_paths.transient, "/", u->id); |
4f4afc88 LP |
4165 | if (!path) |
4166 | return -ENOMEM; | |
4167 | ||
4168 | /* Let's open the file we'll write the transient settings into. This file is kept open as long as we are | |
4169 | * creating the transient, and is closed in unit_load(), as soon as we start loading the file. */ | |
4170 | ||
78e334b5 | 4171 | RUN_WITH_UMASK(0022) { |
4f4afc88 | 4172 | f = fopen(path, "we"); |
78e334b5 ZJS |
4173 | if (!f) { |
4174 | free(path); | |
4175 | return -errno; | |
4176 | } | |
4f4afc88 LP |
4177 | } |
4178 | ||
4179 | if (u->transient_file) | |
4180 | fclose(u->transient_file); | |
4181 | u->transient_file = f; | |
4182 | ||
4183 | free(u->fragment_path); | |
4184 | u->fragment_path = path; | |
7c65093a | 4185 | |
7c65093a LP |
4186 | u->source_path = mfree(u->source_path); |
4187 | u->dropin_paths = strv_free(u->dropin_paths); | |
4188 | u->fragment_mtime = u->source_mtime = u->dropin_mtime = 0; | |
4189 | ||
4f4afc88 LP |
4190 | u->load_state = UNIT_STUB; |
4191 | u->load_error = 0; | |
4192 | u->transient = true; | |
4193 | ||
7c65093a LP |
4194 | unit_add_to_dbus_queue(u); |
4195 | unit_add_to_gc_queue(u); | |
c2756a68 | 4196 | |
4f4afc88 LP |
4197 | fputs("# This is a transient unit file, created programmatically via the systemd API. Do not edit.\n", |
4198 | u->transient_file); | |
4199 | ||
3f5e8115 | 4200 | return 0; |
c2756a68 LP |
4201 | } |
4202 | ||
1d98fef1 LP |
4203 | static void log_kill(pid_t pid, int sig, void *userdata) { |
4204 | _cleanup_free_ char *comm = NULL; | |
4205 | ||
4206 | (void) get_process_comm(pid, &comm); | |
4207 | ||
4208 | /* Don't log about processes marked with brackets, under the assumption that these are temporary processes | |
4209 | only, like for example systemd's own PAM stub process. */ | |
4210 | if (comm && comm[0] == '(') | |
4211 | return; | |
4212 | ||
4213 | log_unit_notice(userdata, | |
4214 | "Killing process " PID_FMT " (%s) with signal SIG%s.", | |
4215 | pid, | |
4216 | strna(comm), | |
4217 | signal_to_string(sig)); | |
4218 | } | |
4219 | ||
4220 | static int operation_to_signal(KillContext *c, KillOperation k) { | |
4221 | assert(c); | |
4222 | ||
4223 | switch (k) { | |
4224 | ||
4225 | case KILL_TERMINATE: | |
4226 | case KILL_TERMINATE_AND_LOG: | |
4227 | return c->kill_signal; | |
4228 | ||
4229 | case KILL_KILL: | |
4230 | return SIGKILL; | |
4231 | ||
4232 | case KILL_ABORT: | |
4233 | return SIGABRT; | |
4234 | ||
4235 | default: | |
4236 | assert_not_reached("KillOperation unknown"); | |
4237 | } | |
4238 | } | |
4239 | ||
cd2086fe LP |
4240 | int unit_kill_context( |
4241 | Unit *u, | |
4242 | KillContext *c, | |
db2cb23b | 4243 | KillOperation k, |
cd2086fe LP |
4244 | pid_t main_pid, |
4245 | pid_t control_pid, | |
4246 | bool main_pid_alien) { | |
4247 | ||
1d98fef1 | 4248 | bool wait_for_exit = false, send_sighup; |
59ec09a8 | 4249 | cg_kill_log_func_t log_func = NULL; |
b821a397 | 4250 | int sig, r; |
cd2086fe LP |
4251 | |
4252 | assert(u); | |
4253 | assert(c); | |
4254 | ||
59ec09a8 ZJS |
4255 | /* Kill the processes belonging to this unit, in preparation for shutting the unit down. |
4256 | * Returns > 0 if we killed something worth waiting for, 0 otherwise. */ | |
1d98fef1 | 4257 | |
cd2086fe LP |
4258 | if (c->kill_mode == KILL_NONE) |
4259 | return 0; | |
4260 | ||
1d98fef1 LP |
4261 | sig = operation_to_signal(c, k); |
4262 | ||
4263 | send_sighup = | |
4264 | c->send_sighup && | |
4265 | IN_SET(k, KILL_TERMINATE, KILL_TERMINATE_AND_LOG) && | |
4266 | sig != SIGHUP; | |
4267 | ||
59ec09a8 ZJS |
4268 | if (k != KILL_TERMINATE || IN_SET(sig, SIGKILL, SIGABRT)) |
4269 | log_func = log_kill; | |
cd2086fe LP |
4270 | |
4271 | if (main_pid > 0) { | |
1d98fef1 LP |
4272 | if (log_func) |
4273 | log_func(main_pid, sig, u); | |
cd2086fe | 4274 | |
1d98fef1 | 4275 | r = kill_and_sigcont(main_pid, sig); |
cd2086fe LP |
4276 | if (r < 0 && r != -ESRCH) { |
4277 | _cleanup_free_ char *comm = NULL; | |
1d98fef1 | 4278 | (void) get_process_comm(main_pid, &comm); |
cd2086fe | 4279 | |
b821a397 | 4280 | log_unit_warning_errno(u, r, "Failed to kill main process " PID_FMT " (%s), ignoring: %m", main_pid, strna(comm)); |
82659fd7 | 4281 | } else { |
bc6aed7b LP |
4282 | if (!main_pid_alien) |
4283 | wait_for_exit = true; | |
82659fd7 | 4284 | |
1d98fef1 | 4285 | if (r != -ESRCH && send_sighup) |
d0667321 | 4286 | (void) kill(main_pid, SIGHUP); |
82659fd7 | 4287 | } |
cd2086fe LP |
4288 | } |
4289 | ||
4290 | if (control_pid > 0) { | |
1d98fef1 LP |
4291 | if (log_func) |
4292 | log_func(control_pid, sig, u); | |
cd2086fe | 4293 | |
1d98fef1 | 4294 | r = kill_and_sigcont(control_pid, sig); |
cd2086fe LP |
4295 | if (r < 0 && r != -ESRCH) { |
4296 | _cleanup_free_ char *comm = NULL; | |
1d98fef1 | 4297 | (void) get_process_comm(control_pid, &comm); |
cd2086fe | 4298 | |
b821a397 | 4299 | log_unit_warning_errno(u, r, "Failed to kill control process " PID_FMT " (%s), ignoring: %m", control_pid, strna(comm)); |
82659fd7 | 4300 | } else { |
cd2086fe | 4301 | wait_for_exit = true; |
82659fd7 | 4302 | |
1d98fef1 | 4303 | if (r != -ESRCH && send_sighup) |
d0667321 | 4304 | (void) kill(control_pid, SIGHUP); |
82659fd7 | 4305 | } |
cd2086fe LP |
4306 | } |
4307 | ||
b821a397 LP |
4308 | if (u->cgroup_path && |
4309 | (c->kill_mode == KILL_CONTROL_GROUP || (c->kill_mode == KILL_MIXED && k == KILL_KILL))) { | |
cd2086fe LP |
4310 | _cleanup_set_free_ Set *pid_set = NULL; |
4311 | ||
82659fd7 LP |
4312 | /* Exclude the main/control pids from being killed via the cgroup */ |
4313 | pid_set = unit_pid_set(main_pid, control_pid); | |
cd2086fe LP |
4314 | if (!pid_set) |
4315 | return -ENOMEM; | |
4316 | ||
1d98fef1 LP |
4317 | r = cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, |
4318 | sig, | |
4319 | CGROUP_SIGCONT|CGROUP_IGNORE_SELF, | |
4320 | pid_set, | |
4321 | log_func, u); | |
cd2086fe | 4322 | if (r < 0) { |
4c701096 | 4323 | if (!IN_SET(r, -EAGAIN, -ESRCH, -ENOENT)) |
b821a397 LP |
4324 | log_unit_warning_errno(u, r, "Failed to kill control group %s, ignoring: %m", u->cgroup_path); |
4325 | ||
82659fd7 | 4326 | } else if (r > 0) { |
bc6aed7b | 4327 | |
efdb0237 LP |
4328 | /* FIXME: For now, on the legacy hierarchy, we |
4329 | * will not wait for the cgroup members to die | |
4330 | * if we are running in a container or if this | |
4331 | * is a delegation unit, simply because cgroup | |
4332 | * notification is unreliable in these | |
4333 | * cases. It doesn't work at all in | |
4334 | * containers, and outside of containers it | |
4335 | * can be confused easily by left-over | |
ccddd104 | 4336 | * directories in the cgroup — which however |
efdb0237 LP |
4337 | * should not exist in non-delegated units. On |
4338 | * the unified hierarchy that's different, | |
4339 | * there we get proper events. Hence rely on | |
13e785f7 | 4340 | * them. */ |
efdb0237 | 4341 | |
c22800e4 | 4342 | if (cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER) > 0 || |
2e4025c0 | 4343 | (detect_container() == 0 && !UNIT_CGROUP_BOOL(u, delegate))) |
e9db43d5 | 4344 | wait_for_exit = true; |
58ea275a | 4345 | |
1d98fef1 | 4346 | if (send_sighup) { |
82659fd7 LP |
4347 | set_free(pid_set); |
4348 | ||
4349 | pid_set = unit_pid_set(main_pid, control_pid); | |
4350 | if (!pid_set) | |
4351 | return -ENOMEM; | |
4352 | ||
1d98fef1 LP |
4353 | cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, |
4354 | SIGHUP, | |
4355 | CGROUP_IGNORE_SELF, | |
4356 | pid_set, | |
4357 | NULL, NULL); | |
82659fd7 LP |
4358 | } |
4359 | } | |
cd2086fe LP |
4360 | } |
4361 | ||
4362 | return wait_for_exit; | |
4363 | } | |
4364 | ||
eef85c4a | 4365 | int unit_require_mounts_for(Unit *u, const char *path, UnitDependencyMask mask) { |
a57f7e2c | 4366 | char prefix[strlen(path) + 1], *p; |
eef85c4a | 4367 | UnitDependencyInfo di; |
a57f7e2c LP |
4368 | int r; |
4369 | ||
4370 | assert(u); | |
4371 | assert(path); | |
4372 | ||
eef85c4a LP |
4373 | /* Registers a unit for requiring a certain path and all its prefixes. We keep a hashtable of these paths in |
4374 | * the unit (from the path to the UnitDependencyInfo structure indicating how to the dependency came to | |
4375 | * be). However, we build a prefix table for all possible prefixes so that new appearing mount units can easily | |
4376 | * determine which units to make themselves a dependency of. */ | |
a57f7e2c | 4377 | |
70b64bd3 ZJS |
4378 | if (!path_is_absolute(path)) |
4379 | return -EINVAL; | |
4380 | ||
eef85c4a LP |
4381 | r = hashmap_ensure_allocated(&u->requires_mounts_for, &string_hash_ops); |
4382 | if (r < 0) | |
4383 | return r; | |
4384 | ||
a57f7e2c LP |
4385 | p = strdup(path); |
4386 | if (!p) | |
4387 | return -ENOMEM; | |
4388 | ||
4389 | path_kill_slashes(p); | |
4390 | ||
a57f7e2c LP |
4391 | if (!path_is_safe(p)) { |
4392 | free(p); | |
4393 | return -EPERM; | |
4394 | } | |
4395 | ||
eef85c4a | 4396 | if (hashmap_contains(u->requires_mounts_for, p)) { |
a57f7e2c LP |
4397 | free(p); |
4398 | return 0; | |
4399 | } | |
4400 | ||
eef85c4a LP |
4401 | di = (UnitDependencyInfo) { |
4402 | .origin_mask = mask | |
4403 | }; | |
4404 | ||
4405 | r = hashmap_put(u->requires_mounts_for, p, di.data); | |
4406 | if (r < 0) { | |
4407 | free(p); | |
a57f7e2c | 4408 | return r; |
eef85c4a | 4409 | } |
a57f7e2c LP |
4410 | |
4411 | PATH_FOREACH_PREFIX_MORE(prefix, p) { | |
4412 | Set *x; | |
4413 | ||
4414 | x = hashmap_get(u->manager->units_requiring_mounts_for, prefix); | |
4415 | if (!x) { | |
4416 | char *q; | |
4417 | ||
742f41ad LP |
4418 | r = hashmap_ensure_allocated(&u->manager->units_requiring_mounts_for, &string_hash_ops); |
4419 | if (r < 0) | |
4420 | return r; | |
a57f7e2c LP |
4421 | |
4422 | q = strdup(prefix); | |
4423 | if (!q) | |
4424 | return -ENOMEM; | |
4425 | ||
d5099efc | 4426 | x = set_new(NULL); |
a57f7e2c LP |
4427 | if (!x) { |
4428 | free(q); | |
4429 | return -ENOMEM; | |
4430 | } | |
4431 | ||
4432 | r = hashmap_put(u->manager->units_requiring_mounts_for, q, x); | |
4433 | if (r < 0) { | |
4434 | free(q); | |
4435 | set_free(x); | |
4436 | return r; | |
4437 | } | |
4438 | } | |
4439 | ||
4440 | r = set_put(x, u); | |
4441 | if (r < 0) | |
4442 | return r; | |
4443 | } | |
4444 | ||
4445 | return 0; | |
4446 | } | |
4447 | ||
613b411c LP |
4448 | int unit_setup_exec_runtime(Unit *u) { |
4449 | ExecRuntime **rt; | |
4450 | size_t offset; | |
613b411c | 4451 | Unit *other; |
eef85c4a LP |
4452 | Iterator i; |
4453 | void *v; | |
613b411c LP |
4454 | |
4455 | offset = UNIT_VTABLE(u)->exec_runtime_offset; | |
4456 | assert(offset > 0); | |
4457 | ||
06b643e7 | 4458 | /* Check if there already is an ExecRuntime for this unit? */ |
613b411c LP |
4459 | rt = (ExecRuntime**) ((uint8_t*) u + offset); |
4460 | if (*rt) | |
4461 | return 0; | |
4462 | ||
4463 | /* Try to get it from somebody else */ | |
eef85c4a | 4464 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_JOINS_NAMESPACE_OF], i) { |
613b411c LP |
4465 | |
4466 | *rt = unit_get_exec_runtime(other); | |
4467 | if (*rt) { | |
4468 | exec_runtime_ref(*rt); | |
4469 | return 0; | |
4470 | } | |
4471 | } | |
4472 | ||
4473 | return exec_runtime_make(rt, unit_get_exec_context(u), u->id); | |
4474 | } | |
4475 | ||
29206d46 LP |
4476 | int unit_setup_dynamic_creds(Unit *u) { |
4477 | ExecContext *ec; | |
4478 | DynamicCreds *dcreds; | |
4479 | size_t offset; | |
4480 | ||
4481 | assert(u); | |
4482 | ||
4483 | offset = UNIT_VTABLE(u)->dynamic_creds_offset; | |
4484 | assert(offset > 0); | |
4485 | dcreds = (DynamicCreds*) ((uint8_t*) u + offset); | |
4486 | ||
4487 | ec = unit_get_exec_context(u); | |
4488 | assert(ec); | |
4489 | ||
4490 | if (!ec->dynamic_user) | |
4491 | return 0; | |
4492 | ||
4493 | return dynamic_creds_acquire(dcreds, u->manager, ec->user, ec->group); | |
4494 | } | |
4495 | ||
1c2e9646 LP |
4496 | bool unit_type_supported(UnitType t) { |
4497 | if (_unlikely_(t < 0)) | |
4498 | return false; | |
4499 | if (_unlikely_(t >= _UNIT_TYPE_MAX)) | |
4500 | return false; | |
4501 | ||
4502 | if (!unit_vtable[t]->supported) | |
4503 | return true; | |
4504 | ||
4505 | return unit_vtable[t]->supported(); | |
4506 | } | |
4507 | ||
8b4305c7 LP |
4508 | void unit_warn_if_dir_nonempty(Unit *u, const char* where) { |
4509 | int r; | |
4510 | ||
4511 | assert(u); | |
4512 | assert(where); | |
4513 | ||
4514 | r = dir_is_empty(where); | |
4515 | if (r > 0) | |
4516 | return; | |
4517 | if (r < 0) { | |
4518 | log_unit_warning_errno(u, r, "Failed to check directory %s: %m", where); | |
4519 | return; | |
4520 | } | |
4521 | ||
4522 | log_struct(LOG_NOTICE, | |
2b044526 | 4523 | "MESSAGE_ID=" SD_MESSAGE_OVERMOUNTING_STR, |
8b4305c7 | 4524 | LOG_UNIT_ID(u), |
f1c50bec | 4525 | LOG_UNIT_INVOCATION_ID(u), |
8b4305c7 LP |
4526 | LOG_UNIT_MESSAGE(u, "Directory %s to mount over is not empty, mounting anyway.", where), |
4527 | "WHERE=%s", where, | |
4528 | NULL); | |
4529 | } | |
4530 | ||
4531 | int unit_fail_if_symlink(Unit *u, const char* where) { | |
4532 | int r; | |
4533 | ||
4534 | assert(u); | |
4535 | assert(where); | |
4536 | ||
4537 | r = is_symlink(where); | |
4538 | if (r < 0) { | |
4539 | log_unit_debug_errno(u, r, "Failed to check symlink %s, ignoring: %m", where); | |
4540 | return 0; | |
4541 | } | |
4542 | if (r == 0) | |
4543 | return 0; | |
4544 | ||
4545 | log_struct(LOG_ERR, | |
2b044526 | 4546 | "MESSAGE_ID=" SD_MESSAGE_OVERMOUNTING_STR, |
8b4305c7 | 4547 | LOG_UNIT_ID(u), |
f1c50bec | 4548 | LOG_UNIT_INVOCATION_ID(u), |
8b4305c7 LP |
4549 | LOG_UNIT_MESSAGE(u, "Mount on symlink %s not allowed.", where), |
4550 | "WHERE=%s", where, | |
4551 | NULL); | |
4552 | ||
4553 | return -ELOOP; | |
4554 | } | |
0f13f3bd LP |
4555 | |
4556 | bool unit_is_pristine(Unit *u) { | |
4557 | assert(u); | |
4558 | ||
7c65093a | 4559 | /* Check if the unit already exists or is already around, |
0f13f3bd LP |
4560 | * in a number of different ways. Note that to cater for unit |
4561 | * types such as slice, we are generally fine with units that | |
61233823 | 4562 | * are marked UNIT_LOADED even though nothing was |
0f13f3bd LP |
4563 | * actually loaded, as those unit types don't require a file |
4564 | * on disk to validly load. */ | |
4565 | ||
4566 | return !(!IN_SET(u->load_state, UNIT_NOT_FOUND, UNIT_LOADED) || | |
4567 | u->fragment_path || | |
4568 | u->source_path || | |
4569 | !strv_isempty(u->dropin_paths) || | |
0f13f3bd LP |
4570 | u->job || |
4571 | u->merged_into); | |
4572 | } | |
291d565a LP |
4573 | |
4574 | pid_t unit_control_pid(Unit *u) { | |
4575 | assert(u); | |
4576 | ||
4577 | if (UNIT_VTABLE(u)->control_pid) | |
4578 | return UNIT_VTABLE(u)->control_pid(u); | |
4579 | ||
4580 | return 0; | |
4581 | } | |
4582 | ||
4583 | pid_t unit_main_pid(Unit *u) { | |
4584 | assert(u); | |
4585 | ||
4586 | if (UNIT_VTABLE(u)->main_pid) | |
4587 | return UNIT_VTABLE(u)->main_pid(u); | |
4588 | ||
4589 | return 0; | |
4590 | } | |
00d9ef85 LP |
4591 | |
4592 | static void unit_unref_uid_internal( | |
4593 | Unit *u, | |
4594 | uid_t *ref_uid, | |
4595 | bool destroy_now, | |
4596 | void (*_manager_unref_uid)(Manager *m, uid_t uid, bool destroy_now)) { | |
4597 | ||
4598 | assert(u); | |
4599 | assert(ref_uid); | |
4600 | assert(_manager_unref_uid); | |
4601 | ||
4602 | /* Generic implementation of both unit_unref_uid() and unit_unref_gid(), under the assumption that uid_t and | |
4603 | * gid_t are actually the same time, with the same validity rules. | |
4604 | * | |
4605 | * Drops a reference to UID/GID from a unit. */ | |
4606 | ||
4607 | assert_cc(sizeof(uid_t) == sizeof(gid_t)); | |
4608 | assert_cc(UID_INVALID == (uid_t) GID_INVALID); | |
4609 | ||
4610 | if (!uid_is_valid(*ref_uid)) | |
4611 | return; | |
4612 | ||
4613 | _manager_unref_uid(u->manager, *ref_uid, destroy_now); | |
4614 | *ref_uid = UID_INVALID; | |
4615 | } | |
4616 | ||
4617 | void unit_unref_uid(Unit *u, bool destroy_now) { | |
4618 | unit_unref_uid_internal(u, &u->ref_uid, destroy_now, manager_unref_uid); | |
4619 | } | |
4620 | ||
4621 | void unit_unref_gid(Unit *u, bool destroy_now) { | |
4622 | unit_unref_uid_internal(u, (uid_t*) &u->ref_gid, destroy_now, manager_unref_gid); | |
4623 | } | |
4624 | ||
4625 | static int unit_ref_uid_internal( | |
4626 | Unit *u, | |
4627 | uid_t *ref_uid, | |
4628 | uid_t uid, | |
4629 | bool clean_ipc, | |
4630 | int (*_manager_ref_uid)(Manager *m, uid_t uid, bool clean_ipc)) { | |
4631 | ||
4632 | int r; | |
4633 | ||
4634 | assert(u); | |
4635 | assert(ref_uid); | |
4636 | assert(uid_is_valid(uid)); | |
4637 | assert(_manager_ref_uid); | |
4638 | ||
4639 | /* Generic implementation of both unit_ref_uid() and unit_ref_guid(), under the assumption that uid_t and gid_t | |
4640 | * are actually the same type, and have the same validity rules. | |
4641 | * | |
4642 | * Adds a reference on a specific UID/GID to this unit. Each unit referencing the same UID/GID maintains a | |
4643 | * reference so that we can destroy the UID/GID's IPC resources as soon as this is requested and the counter | |
4644 | * drops to zero. */ | |
4645 | ||
4646 | assert_cc(sizeof(uid_t) == sizeof(gid_t)); | |
4647 | assert_cc(UID_INVALID == (uid_t) GID_INVALID); | |
4648 | ||
4649 | if (*ref_uid == uid) | |
4650 | return 0; | |
4651 | ||
4652 | if (uid_is_valid(*ref_uid)) /* Already set? */ | |
4653 | return -EBUSY; | |
4654 | ||
4655 | r = _manager_ref_uid(u->manager, uid, clean_ipc); | |
4656 | if (r < 0) | |
4657 | return r; | |
4658 | ||
4659 | *ref_uid = uid; | |
4660 | return 1; | |
4661 | } | |
4662 | ||
4663 | int unit_ref_uid(Unit *u, uid_t uid, bool clean_ipc) { | |
4664 | return unit_ref_uid_internal(u, &u->ref_uid, uid, clean_ipc, manager_ref_uid); | |
4665 | } | |
4666 | ||
4667 | int unit_ref_gid(Unit *u, gid_t gid, bool clean_ipc) { | |
4668 | return unit_ref_uid_internal(u, (uid_t*) &u->ref_gid, (uid_t) gid, clean_ipc, manager_ref_gid); | |
4669 | } | |
4670 | ||
4671 | static int unit_ref_uid_gid_internal(Unit *u, uid_t uid, gid_t gid, bool clean_ipc) { | |
4672 | int r = 0, q = 0; | |
4673 | ||
4674 | assert(u); | |
4675 | ||
4676 | /* Reference both a UID and a GID in one go. Either references both, or neither. */ | |
4677 | ||
4678 | if (uid_is_valid(uid)) { | |
4679 | r = unit_ref_uid(u, uid, clean_ipc); | |
4680 | if (r < 0) | |
4681 | return r; | |
4682 | } | |
4683 | ||
4684 | if (gid_is_valid(gid)) { | |
4685 | q = unit_ref_gid(u, gid, clean_ipc); | |
4686 | if (q < 0) { | |
4687 | if (r > 0) | |
4688 | unit_unref_uid(u, false); | |
4689 | ||
4690 | return q; | |
4691 | } | |
4692 | } | |
4693 | ||
4694 | return r > 0 || q > 0; | |
4695 | } | |
4696 | ||
4697 | int unit_ref_uid_gid(Unit *u, uid_t uid, gid_t gid) { | |
4698 | ExecContext *c; | |
4699 | int r; | |
4700 | ||
4701 | assert(u); | |
4702 | ||
4703 | c = unit_get_exec_context(u); | |
4704 | ||
4705 | r = unit_ref_uid_gid_internal(u, uid, gid, c ? c->remove_ipc : false); | |
4706 | if (r < 0) | |
4707 | return log_unit_warning_errno(u, r, "Couldn't add UID/GID reference to unit, proceeding without: %m"); | |
4708 | ||
4709 | return r; | |
4710 | } | |
4711 | ||
4712 | void unit_unref_uid_gid(Unit *u, bool destroy_now) { | |
4713 | assert(u); | |
4714 | ||
4715 | unit_unref_uid(u, destroy_now); | |
4716 | unit_unref_gid(u, destroy_now); | |
4717 | } | |
4718 | ||
4719 | void unit_notify_user_lookup(Unit *u, uid_t uid, gid_t gid) { | |
4720 | int r; | |
4721 | ||
4722 | assert(u); | |
4723 | ||
4724 | /* This is invoked whenever one of the forked off processes let's us know the UID/GID its user name/group names | |
4725 | * resolved to. We keep track of which UID/GID is currently assigned in order to be able to destroy its IPC | |
4726 | * objects when no service references the UID/GID anymore. */ | |
4727 | ||
4728 | r = unit_ref_uid_gid(u, uid, gid); | |
4729 | if (r > 0) | |
4730 | bus_unit_send_change_signal(u); | |
4731 | } | |
4b58153d LP |
4732 | |
4733 | int unit_set_invocation_id(Unit *u, sd_id128_t id) { | |
4734 | int r; | |
4735 | ||
4736 | assert(u); | |
4737 | ||
4738 | /* Set the invocation ID for this unit. If we cannot, this will not roll back, but reset the whole thing. */ | |
4739 | ||
4740 | if (sd_id128_equal(u->invocation_id, id)) | |
4741 | return 0; | |
4742 | ||
4743 | if (!sd_id128_is_null(u->invocation_id)) | |
4744 | (void) hashmap_remove_value(u->manager->units_by_invocation_id, &u->invocation_id, u); | |
4745 | ||
4746 | if (sd_id128_is_null(id)) { | |
4747 | r = 0; | |
4748 | goto reset; | |
4749 | } | |
4750 | ||
4751 | r = hashmap_ensure_allocated(&u->manager->units_by_invocation_id, &id128_hash_ops); | |
4752 | if (r < 0) | |
4753 | goto reset; | |
4754 | ||
4755 | u->invocation_id = id; | |
4756 | sd_id128_to_string(id, u->invocation_id_string); | |
4757 | ||
4758 | r = hashmap_put(u->manager->units_by_invocation_id, &u->invocation_id, u); | |
4759 | if (r < 0) | |
4760 | goto reset; | |
4761 | ||
4762 | return 0; | |
4763 | ||
4764 | reset: | |
4765 | u->invocation_id = SD_ID128_NULL; | |
4766 | u->invocation_id_string[0] = 0; | |
4767 | return r; | |
4768 | } | |
4769 | ||
4770 | int unit_acquire_invocation_id(Unit *u) { | |
4771 | sd_id128_t id; | |
4772 | int r; | |
4773 | ||
4774 | assert(u); | |
4775 | ||
4776 | r = sd_id128_randomize(&id); | |
4777 | if (r < 0) | |
4778 | return log_unit_error_errno(u, r, "Failed to generate invocation ID for unit: %m"); | |
4779 | ||
4780 | r = unit_set_invocation_id(u, id); | |
4781 | if (r < 0) | |
4782 | return log_unit_error_errno(u, r, "Failed to set invocation ID for unit: %m"); | |
4783 | ||
4784 | return 0; | |
4785 | } | |
f0d47797 | 4786 | |
7960b0c7 LP |
4787 | void unit_set_exec_params(Unit *u, ExecParameters *p) { |
4788 | assert(u); | |
4789 | assert(p); | |
f0d47797 | 4790 | |
7960b0c7 | 4791 | p->cgroup_path = u->cgroup_path; |
2e4025c0 | 4792 | SET_FLAG(p->flags, EXEC_CGROUP_DELEGATE, UNIT_CGROUP_BOOL(u, delegate)); |
f0d47797 | 4793 | } |
a79279c7 LP |
4794 | |
4795 | int unit_fork_helper_process(Unit *u, pid_t *ret) { | |
4796 | pid_t pid; | |
4797 | int r; | |
4798 | ||
4799 | assert(u); | |
4800 | assert(ret); | |
4801 | ||
4802 | /* Forks off a helper process and makes sure it is a member of the unit's cgroup. Returns == 0 in the child, | |
4803 | * and > 0 in the parent. The pid parameter is always filled in with the child's PID. */ | |
4804 | ||
4805 | (void) unit_realize_cgroup(u); | |
4806 | ||
4807 | pid = fork(); | |
4808 | if (pid < 0) | |
4809 | return -errno; | |
4810 | ||
4811 | if (pid == 0) { | |
4812 | ||
4813 | (void) default_signals(SIGNALS_CRASH_HANDLER, SIGNALS_IGNORE, -1); | |
4814 | (void) ignore_signals(SIGPIPE, -1); | |
4815 | ||
4816 | log_close(); | |
4817 | log_open(); | |
4818 | ||
4819 | if (u->cgroup_path) { | |
4820 | r = cg_attach_everywhere(u->manager->cgroup_supported, u->cgroup_path, 0, NULL, NULL); | |
4821 | if (r < 0) { | |
4822 | log_unit_error_errno(u, r, "Failed to join unit cgroup %s: %m", u->cgroup_path); | |
4823 | _exit(EXIT_CGROUP); | |
4824 | } | |
4825 | } | |
4826 | ||
4827 | *ret = getpid_cached(); | |
4828 | return 0; | |
4829 | } | |
4830 | ||
4831 | *ret = pid; | |
4832 | return 1; | |
4833 | } | |
c999cf38 LP |
4834 | |
4835 | static void unit_update_dependency_mask(Unit *u, UnitDependency d, Unit *other, UnitDependencyInfo di) { | |
4836 | assert(u); | |
4837 | assert(d >= 0); | |
4838 | assert(d < _UNIT_DEPENDENCY_MAX); | |
4839 | assert(other); | |
4840 | ||
4841 | if (di.origin_mask == 0 && di.destination_mask == 0) { | |
4842 | /* No bit set anymore, let's drop the whole entry */ | |
4843 | assert_se(hashmap_remove(u->dependencies[d], other)); | |
4844 | log_unit_debug(u, "%s lost dependency %s=%s", u->id, unit_dependency_to_string(d), other->id); | |
4845 | } else | |
4846 | /* Mask was reduced, let's update the entry */ | |
4847 | assert_se(hashmap_update(u->dependencies[d], other, di.data) == 0); | |
4848 | } | |
4849 | ||
4850 | void unit_remove_dependencies(Unit *u, UnitDependencyMask mask) { | |
4851 | UnitDependency d; | |
4852 | ||
4853 | assert(u); | |
4854 | ||
4855 | /* Removes all dependencies u has on other units marked for ownership by 'mask'. */ | |
4856 | ||
4857 | if (mask == 0) | |
4858 | return; | |
4859 | ||
4860 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) { | |
4861 | bool done; | |
4862 | ||
4863 | do { | |
4864 | UnitDependencyInfo di; | |
4865 | Unit *other; | |
4866 | Iterator i; | |
4867 | ||
4868 | done = true; | |
4869 | ||
4870 | HASHMAP_FOREACH_KEY(di.data, other, u->dependencies[d], i) { | |
4871 | UnitDependency q; | |
4872 | ||
4873 | if ((di.origin_mask & ~mask) == di.origin_mask) | |
4874 | continue; | |
4875 | di.origin_mask &= ~mask; | |
4876 | unit_update_dependency_mask(u, d, other, di); | |
4877 | ||
4878 | /* We updated the dependency from our unit to the other unit now. But most dependencies | |
4879 | * imply a reverse dependency. Hence, let's delete that one too. For that we go through | |
4880 | * all dependency types on the other unit and delete all those which point to us and | |
4881 | * have the right mask set. */ | |
4882 | ||
4883 | for (q = 0; q < _UNIT_DEPENDENCY_MAX; q++) { | |
4884 | UnitDependencyInfo dj; | |
4885 | ||
4886 | dj.data = hashmap_get(other->dependencies[q], u); | |
4887 | if ((dj.destination_mask & ~mask) == dj.destination_mask) | |
4888 | continue; | |
4889 | dj.destination_mask &= ~mask; | |
4890 | ||
4891 | unit_update_dependency_mask(other, q, u, dj); | |
4892 | } | |
4893 | ||
4894 | unit_add_to_gc_queue(other); | |
4895 | ||
4896 | done = false; | |
4897 | break; | |
4898 | } | |
4899 | ||
4900 | } while (!done); | |
4901 | } | |
4902 | } |