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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" |
d3070fbd | 41 | #include "fs-util.h" |
4b58153d | 42 | #include "id128-util.h" |
915b1d01 | 43 | #include "io-util.h" |
4f5dd394 LP |
44 | #include "load-dropin.h" |
45 | #include "load-fragment.h" | |
46 | #include "log.h" | |
47 | #include "macro.h" | |
48 | #include "missing.h" | |
49 | #include "mkdir.h" | |
6bedfcbb | 50 | #include "parse-util.h" |
4f5dd394 | 51 | #include "path-util.h" |
0b452006 | 52 | #include "process-util.h" |
4f5dd394 | 53 | #include "set.h" |
6eb7c172 | 54 | #include "signal-util.h" |
d3070fbd | 55 | #include "sparse-endian.h" |
e9db43d5 | 56 | #include "special.h" |
8fcde012 | 57 | #include "stat-util.h" |
d054f0a4 | 58 | #include "stdio-util.h" |
07630cea | 59 | #include "string-util.h" |
4f5dd394 | 60 | #include "strv.h" |
4f4afc88 | 61 | #include "umask-util.h" |
4f5dd394 | 62 | #include "unit-name.h" |
e9db43d5 | 63 | #include "unit.h" |
b1d4f8e1 LP |
64 | #include "user-util.h" |
65 | #include "virt.h" | |
87f0e418 LP |
66 | |
67 | const UnitVTable * const unit_vtable[_UNIT_TYPE_MAX] = { | |
68 | [UNIT_SERVICE] = &service_vtable, | |
87f0e418 LP |
69 | [UNIT_SOCKET] = &socket_vtable, |
70 | [UNIT_TARGET] = &target_vtable, | |
71 | [UNIT_DEVICE] = &device_vtable, | |
72 | [UNIT_MOUNT] = &mount_vtable, | |
73 | [UNIT_AUTOMOUNT] = &automount_vtable, | |
01f78473 | 74 | [UNIT_SWAP] = &swap_vtable, |
e821075a | 75 | [UNIT_TIMER] = &timer_vtable, |
a016b922 | 76 | [UNIT_PATH] = &path_vtable, |
6c12b52e LP |
77 | [UNIT_SLICE] = &slice_vtable, |
78 | [UNIT_SCOPE] = &scope_vtable | |
87f0e418 LP |
79 | }; |
80 | ||
f2341e0a | 81 | static void maybe_warn_about_dependency(Unit *u, const char *other, UnitDependency dependency); |
d1fab3fe | 82 | |
7d17cfbc | 83 | Unit *unit_new(Manager *m, size_t size) { |
87f0e418 LP |
84 | Unit *u; |
85 | ||
86 | assert(m); | |
ac155bb8 | 87 | assert(size >= sizeof(Unit)); |
87f0e418 | 88 | |
7d17cfbc MS |
89 | u = malloc0(size); |
90 | if (!u) | |
87f0e418 LP |
91 | return NULL; |
92 | ||
d5099efc | 93 | u->names = set_new(&string_hash_ops); |
6b430fdb ZJS |
94 | if (!u->names) |
95 | return mfree(u); | |
87f0e418 | 96 | |
ac155bb8 MS |
97 | u->manager = m; |
98 | u->type = _UNIT_TYPE_INVALID; | |
ac155bb8 MS |
99 | u->default_dependencies = true; |
100 | u->unit_file_state = _UNIT_FILE_STATE_INVALID; | |
d2dc52db | 101 | u->unit_file_preset = -1; |
d420282b | 102 | u->on_failure_job_mode = JOB_REPLACE; |
efdb0237 | 103 | u->cgroup_inotify_wd = -1; |
36c16a7c | 104 | u->job_timeout = USEC_INFINITY; |
a2df3ea4 | 105 | u->job_running_timeout = USEC_INFINITY; |
00d9ef85 LP |
106 | u->ref_uid = UID_INVALID; |
107 | u->ref_gid = GID_INVALID; | |
fe700f46 | 108 | u->cpu_usage_last = NSEC_INFINITY; |
87f0e418 | 109 | |
6a48d82f DM |
110 | u->ip_accounting_ingress_map_fd = -1; |
111 | u->ip_accounting_egress_map_fd = -1; | |
112 | u->ipv4_allow_map_fd = -1; | |
113 | u->ipv6_allow_map_fd = -1; | |
114 | u->ipv4_deny_map_fd = -1; | |
115 | u->ipv6_deny_map_fd = -1; | |
116 | ||
6bf0f408 | 117 | RATELIMIT_INIT(u->start_limit, m->default_start_limit_interval, m->default_start_limit_burst); |
67bfdc97 | 118 | RATELIMIT_INIT(u->auto_stop_ratelimit, 10 * USEC_PER_SEC, 16); |
bea355da | 119 | |
87f0e418 LP |
120 | return u; |
121 | } | |
122 | ||
a581e45a LP |
123 | int unit_new_for_name(Manager *m, size_t size, const char *name, Unit **ret) { |
124 | Unit *u; | |
125 | int r; | |
126 | ||
127 | u = unit_new(m, size); | |
128 | if (!u) | |
129 | return -ENOMEM; | |
130 | ||
131 | r = unit_add_name(u, name); | |
132 | if (r < 0) { | |
133 | unit_free(u); | |
134 | return r; | |
135 | } | |
136 | ||
137 | *ret = u; | |
138 | return r; | |
139 | } | |
140 | ||
f278026d LP |
141 | bool unit_has_name(Unit *u, const char *name) { |
142 | assert(u); | |
143 | assert(name); | |
144 | ||
390bc2b1 | 145 | return set_contains(u->names, (char*) name); |
f278026d LP |
146 | } |
147 | ||
598459ce LP |
148 | static void unit_init(Unit *u) { |
149 | CGroupContext *cc; | |
150 | ExecContext *ec; | |
151 | KillContext *kc; | |
152 | ||
153 | assert(u); | |
154 | assert(u->manager); | |
155 | assert(u->type >= 0); | |
156 | ||
157 | cc = unit_get_cgroup_context(u); | |
158 | if (cc) { | |
159 | cgroup_context_init(cc); | |
160 | ||
161 | /* Copy in the manager defaults into the cgroup | |
162 | * context, _before_ the rest of the settings have | |
163 | * been initialized */ | |
164 | ||
165 | cc->cpu_accounting = u->manager->default_cpu_accounting; | |
13c31542 | 166 | cc->io_accounting = u->manager->default_io_accounting; |
377bfd2d | 167 | cc->ip_accounting = u->manager->default_ip_accounting; |
598459ce LP |
168 | cc->blockio_accounting = u->manager->default_blockio_accounting; |
169 | cc->memory_accounting = u->manager->default_memory_accounting; | |
03a7b521 | 170 | cc->tasks_accounting = u->manager->default_tasks_accounting; |
6a48d82f | 171 | cc->ip_accounting = u->manager->default_ip_accounting; |
0af20ea2 LP |
172 | |
173 | if (u->type != UNIT_SLICE) | |
174 | cc->tasks_max = u->manager->default_tasks_max; | |
598459ce LP |
175 | } |
176 | ||
177 | ec = unit_get_exec_context(u); | |
b1edf445 | 178 | if (ec) { |
598459ce LP |
179 | exec_context_init(ec); |
180 | ||
b1edf445 LP |
181 | ec->keyring_mode = MANAGER_IS_SYSTEM(u->manager) ? |
182 | EXEC_KEYRING_PRIVATE : EXEC_KEYRING_INHERIT; | |
183 | } | |
184 | ||
598459ce LP |
185 | kc = unit_get_kill_context(u); |
186 | if (kc) | |
187 | kill_context_init(kc); | |
188 | ||
189 | if (UNIT_VTABLE(u)->init) | |
190 | UNIT_VTABLE(u)->init(u); | |
191 | } | |
192 | ||
87f0e418 | 193 | int unit_add_name(Unit *u, const char *text) { |
598459ce | 194 | _cleanup_free_ char *s = NULL, *i = NULL; |
87f0e418 | 195 | UnitType t; |
87f0e418 LP |
196 | int r; |
197 | ||
198 | assert(u); | |
199 | assert(text); | |
200 | ||
7410616c | 201 | if (unit_name_is_valid(text, UNIT_NAME_TEMPLATE)) { |
598459ce | 202 | |
ac155bb8 | 203 | if (!u->instance) |
9e2f7c11 | 204 | return -EINVAL; |
87f0e418 | 205 | |
7410616c LP |
206 | r = unit_name_replace_instance(text, u->instance, &s); |
207 | if (r < 0) | |
208 | return r; | |
209 | } else { | |
9e2f7c11 | 210 | s = strdup(text); |
7410616c LP |
211 | if (!s) |
212 | return -ENOMEM; | |
213 | } | |
87f0e418 | 214 | |
7410616c LP |
215 | if (set_contains(u->names, s)) |
216 | return 0; | |
217 | if (hashmap_contains(u->manager->units, s)) | |
218 | return -EEXIST; | |
219 | ||
220 | if (!unit_name_is_valid(s, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) | |
598459ce | 221 | return -EINVAL; |
e537352b | 222 | |
7410616c LP |
223 | t = unit_name_to_type(s); |
224 | if (t < 0) | |
225 | return -EINVAL; | |
87f0e418 | 226 | |
598459ce LP |
227 | if (u->type != _UNIT_TYPE_INVALID && t != u->type) |
228 | return -EINVAL; | |
87f0e418 | 229 | |
e48614c4 ZJS |
230 | r = unit_name_to_instance(s, &i); |
231 | if (r < 0) | |
598459ce | 232 | return r; |
87f0e418 | 233 | |
ce99c68a | 234 | if (i && !unit_type_may_template(t)) |
598459ce | 235 | return -EINVAL; |
9e2f7c11 | 236 | |
276c3e78 | 237 | /* Ensure that this unit is either instanced or not instanced, |
7410616c LP |
238 | * but not both. Note that we do allow names with different |
239 | * instance names however! */ | |
598459ce LP |
240 | if (u->type != _UNIT_TYPE_INVALID && !u->instance != !i) |
241 | return -EINVAL; | |
9e2f7c11 | 242 | |
8a993b61 | 243 | if (!unit_type_may_alias(t) && !set_isempty(u->names)) |
598459ce | 244 | return -EEXIST; |
9e2f7c11 | 245 | |
598459ce LP |
246 | if (hashmap_size(u->manager->units) >= MANAGER_MAX_NAMES) |
247 | return -E2BIG; | |
4f0f902f | 248 | |
e48614c4 | 249 | r = set_put(u->names, s); |
7410616c | 250 | if (r < 0) |
598459ce | 251 | return r; |
7410616c | 252 | assert(r > 0); |
87f0e418 | 253 | |
e48614c4 ZJS |
254 | r = hashmap_put(u->manager->units, s, u); |
255 | if (r < 0) { | |
7410616c | 256 | (void) set_remove(u->names, s); |
598459ce | 257 | return r; |
87f0e418 LP |
258 | } |
259 | ||
ac155bb8 | 260 | if (u->type == _UNIT_TYPE_INVALID) { |
ac155bb8 MS |
261 | u->type = t; |
262 | u->id = s; | |
263 | u->instance = i; | |
9e2f7c11 | 264 | |
71fda00f | 265 | LIST_PREPEND(units_by_type, u->manager->units_by_type[t], u); |
e537352b | 266 | |
598459ce | 267 | unit_init(u); |
87f0e418 | 268 | |
598459ce LP |
269 | i = NULL; |
270 | } | |
9e2f7c11 | 271 | |
598459ce | 272 | s = NULL; |
9e2f7c11 | 273 | |
598459ce LP |
274 | unit_add_to_dbus_queue(u); |
275 | return 0; | |
87f0e418 LP |
276 | } |
277 | ||
0ae97ec1 | 278 | int unit_choose_id(Unit *u, const char *name) { |
68eda4bd | 279 | _cleanup_free_ char *t = NULL; |
598459ce | 280 | char *s, *i; |
276c3e78 | 281 | int r; |
0ae97ec1 LP |
282 | |
283 | assert(u); | |
284 | assert(name); | |
285 | ||
7410616c | 286 | if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) { |
9e2f7c11 | 287 | |
ac155bb8 | 288 | if (!u->instance) |
9e2f7c11 LP |
289 | return -EINVAL; |
290 | ||
7410616c LP |
291 | r = unit_name_replace_instance(name, u->instance, &t); |
292 | if (r < 0) | |
293 | return r; | |
9e2f7c11 LP |
294 | |
295 | name = t; | |
296 | } | |
297 | ||
0ae97ec1 | 298 | /* Selects one of the names of this unit as the id */ |
ac155bb8 | 299 | s = set_get(u->names, (char*) name); |
9e2f7c11 | 300 | if (!s) |
0ae97ec1 LP |
301 | return -ENOENT; |
302 | ||
7410616c | 303 | /* Determine the new instance from the new id */ |
e48614c4 ZJS |
304 | r = unit_name_to_instance(s, &i); |
305 | if (r < 0) | |
276c3e78 LP |
306 | return r; |
307 | ||
ac155bb8 | 308 | u->id = s; |
276c3e78 | 309 | |
ac155bb8 MS |
310 | free(u->instance); |
311 | u->instance = i; | |
276c3e78 | 312 | |
c1e1601e | 313 | unit_add_to_dbus_queue(u); |
9e2f7c11 | 314 | |
0ae97ec1 LP |
315 | return 0; |
316 | } | |
317 | ||
f50e0a01 | 318 | int unit_set_description(Unit *u, const char *description) { |
84b26d51 | 319 | int r; |
f50e0a01 LP |
320 | |
321 | assert(u); | |
322 | ||
84b26d51 LP |
323 | r = free_and_strdup(&u->description, empty_to_null(description)); |
324 | if (r < 0) | |
325 | return r; | |
326 | if (r > 0) | |
327 | unit_add_to_dbus_queue(u); | |
c1e1601e | 328 | |
f50e0a01 LP |
329 | return 0; |
330 | } | |
331 | ||
701cc384 | 332 | bool unit_check_gc(Unit *u) { |
a354329f | 333 | UnitActiveState state; |
f0bfbfac | 334 | bool inactive; |
701cc384 LP |
335 | assert(u); |
336 | ||
a354329f | 337 | if (u->job) |
701cc384 LP |
338 | return true; |
339 | ||
a354329f | 340 | if (u->nop_job) |
6c073082 LP |
341 | return true; |
342 | ||
a354329f | 343 | state = unit_active_state(u); |
f0bfbfac | 344 | inactive = state == UNIT_INACTIVE; |
a354329f LP |
345 | |
346 | /* If the unit is inactive and failed and no job is queued for | |
347 | * it, then release its runtime resources */ | |
348 | if (UNIT_IS_INACTIVE_OR_FAILED(state) && | |
349 | UNIT_VTABLE(u)->release_resources) | |
f0bfbfac | 350 | UNIT_VTABLE(u)->release_resources(u, inactive); |
a354329f LP |
351 | |
352 | /* But we keep the unit object around for longer when it is | |
353 | * referenced or configured to not be gc'ed */ | |
f0bfbfac | 354 | if (!inactive) |
701cc384 LP |
355 | return true; |
356 | ||
f5869324 | 357 | if (u->perpetual) |
701cc384 LP |
358 | return true; |
359 | ||
9d576438 LP |
360 | if (u->refs) |
361 | return true; | |
362 | ||
05a98afd LP |
363 | if (sd_bus_track_count(u->bus_track) > 0) |
364 | return true; | |
365 | ||
701cc384 LP |
366 | if (UNIT_VTABLE(u)->check_gc) |
367 | if (UNIT_VTABLE(u)->check_gc(u)) | |
368 | return true; | |
369 | ||
370 | return false; | |
371 | } | |
372 | ||
87f0e418 LP |
373 | void unit_add_to_load_queue(Unit *u) { |
374 | assert(u); | |
ac155bb8 | 375 | assert(u->type != _UNIT_TYPE_INVALID); |
87f0e418 | 376 | |
ac155bb8 | 377 | if (u->load_state != UNIT_STUB || u->in_load_queue) |
87f0e418 LP |
378 | return; |
379 | ||
71fda00f | 380 | LIST_PREPEND(load_queue, u->manager->load_queue, u); |
ac155bb8 | 381 | u->in_load_queue = true; |
87f0e418 LP |
382 | } |
383 | ||
23a177ef LP |
384 | void unit_add_to_cleanup_queue(Unit *u) { |
385 | assert(u); | |
386 | ||
ac155bb8 | 387 | if (u->in_cleanup_queue) |
23a177ef LP |
388 | return; |
389 | ||
71fda00f | 390 | LIST_PREPEND(cleanup_queue, u->manager->cleanup_queue, u); |
ac155bb8 | 391 | u->in_cleanup_queue = true; |
23a177ef LP |
392 | } |
393 | ||
701cc384 LP |
394 | void unit_add_to_gc_queue(Unit *u) { |
395 | assert(u); | |
396 | ||
ac155bb8 | 397 | if (u->in_gc_queue || u->in_cleanup_queue) |
701cc384 LP |
398 | return; |
399 | ||
400 | if (unit_check_gc(u)) | |
401 | return; | |
402 | ||
c5a97ed1 | 403 | LIST_PREPEND(gc_queue, u->manager->gc_unit_queue, u); |
ac155bb8 | 404 | u->in_gc_queue = true; |
701cc384 LP |
405 | } |
406 | ||
c1e1601e LP |
407 | void unit_add_to_dbus_queue(Unit *u) { |
408 | assert(u); | |
ac155bb8 | 409 | assert(u->type != _UNIT_TYPE_INVALID); |
c1e1601e | 410 | |
ac155bb8 | 411 | if (u->load_state == UNIT_STUB || u->in_dbus_queue) |
c1e1601e LP |
412 | return; |
413 | ||
a567261a | 414 | /* Shortcut things if nobody cares */ |
8f8f05a9 | 415 | if (sd_bus_track_count(u->manager->subscribed) <= 0 && |
ae572acd | 416 | sd_bus_track_count(u->bus_track) <= 0 && |
8f8f05a9 | 417 | set_isempty(u->manager->private_buses)) { |
ac155bb8 | 418 | u->sent_dbus_new_signal = true; |
94b6dfa2 LP |
419 | return; |
420 | } | |
421 | ||
71fda00f | 422 | LIST_PREPEND(dbus_queue, u->manager->dbus_unit_queue, u); |
ac155bb8 | 423 | u->in_dbus_queue = true; |
c1e1601e LP |
424 | } |
425 | ||
eef85c4a | 426 | static void bidi_set_free(Unit *u, Hashmap *h) { |
87f0e418 | 427 | Unit *other; |
eef85c4a LP |
428 | Iterator i; |
429 | void *v; | |
87f0e418 LP |
430 | |
431 | assert(u); | |
432 | ||
eef85c4a | 433 | /* Frees the hashmap and makes sure we are dropped from the inverse pointers */ |
87f0e418 | 434 | |
eef85c4a | 435 | HASHMAP_FOREACH_KEY(v, other, h, i) { |
87f0e418 LP |
436 | UnitDependency d; |
437 | ||
438 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) | |
eef85c4a | 439 | hashmap_remove(other->dependencies[d], u); |
701cc384 LP |
440 | |
441 | unit_add_to_gc_queue(other); | |
87f0e418 LP |
442 | } |
443 | ||
eef85c4a | 444 | hashmap_free(h); |
87f0e418 LP |
445 | } |
446 | ||
c2756a68 LP |
447 | static void unit_remove_transient(Unit *u) { |
448 | char **i; | |
449 | ||
450 | assert(u); | |
451 | ||
452 | if (!u->transient) | |
453 | return; | |
454 | ||
455 | if (u->fragment_path) | |
3f5e8115 | 456 | (void) unlink(u->fragment_path); |
c2756a68 LP |
457 | |
458 | STRV_FOREACH(i, u->dropin_paths) { | |
39591351 | 459 | _cleanup_free_ char *p = NULL, *pp = NULL; |
c2756a68 | 460 | |
39591351 LP |
461 | p = dirname_malloc(*i); /* Get the drop-in directory from the drop-in file */ |
462 | if (!p) | |
463 | continue; | |
464 | ||
465 | pp = dirname_malloc(p); /* Get the config directory from the drop-in directory */ | |
466 | if (!pp) | |
467 | continue; | |
468 | ||
469 | /* Only drop transient drop-ins */ | |
470 | if (!path_equal(u->manager->lookup_paths.transient, pp)) | |
471 | continue; | |
c2756a68 | 472 | |
39591351 LP |
473 | (void) unlink(*i); |
474 | (void) rmdir(p); | |
c2756a68 LP |
475 | } |
476 | } | |
477 | ||
a57f7e2c | 478 | static void unit_free_requires_mounts_for(Unit *u) { |
eef85c4a | 479 | assert(u); |
a57f7e2c | 480 | |
eef85c4a LP |
481 | for (;;) { |
482 | _cleanup_free_ char *path; | |
a57f7e2c | 483 | |
eef85c4a LP |
484 | path = hashmap_steal_first_key(u->requires_mounts_for); |
485 | if (!path) | |
486 | break; | |
487 | else { | |
488 | char s[strlen(path) + 1]; | |
a57f7e2c | 489 | |
eef85c4a LP |
490 | PATH_FOREACH_PREFIX_MORE(s, path) { |
491 | char *y; | |
492 | Set *x; | |
493 | ||
494 | x = hashmap_get2(u->manager->units_requiring_mounts_for, s, (void**) &y); | |
495 | if (!x) | |
496 | continue; | |
a57f7e2c | 497 | |
eef85c4a | 498 | (void) set_remove(x, u); |
a57f7e2c | 499 | |
eef85c4a LP |
500 | if (set_isempty(x)) { |
501 | (void) hashmap_remove(u->manager->units_requiring_mounts_for, y); | |
502 | free(y); | |
503 | set_free(x); | |
504 | } | |
a57f7e2c LP |
505 | } |
506 | } | |
507 | } | |
508 | ||
eef85c4a | 509 | u->requires_mounts_for = hashmap_free(u->requires_mounts_for); |
a57f7e2c LP |
510 | } |
511 | ||
598459ce LP |
512 | static void unit_done(Unit *u) { |
513 | ExecContext *ec; | |
514 | CGroupContext *cc; | |
515 | ||
516 | assert(u); | |
517 | ||
518 | if (u->type < 0) | |
519 | return; | |
520 | ||
521 | if (UNIT_VTABLE(u)->done) | |
522 | UNIT_VTABLE(u)->done(u); | |
523 | ||
524 | ec = unit_get_exec_context(u); | |
525 | if (ec) | |
526 | exec_context_done(ec); | |
527 | ||
528 | cc = unit_get_cgroup_context(u); | |
529 | if (cc) | |
530 | cgroup_context_done(cc); | |
531 | } | |
532 | ||
87f0e418 LP |
533 | void unit_free(Unit *u) { |
534 | UnitDependency d; | |
535 | Iterator i; | |
536 | char *t; | |
537 | ||
c9d5c9c0 LP |
538 | if (!u) |
539 | return; | |
87f0e418 | 540 | |
4f4afc88 LP |
541 | if (u->transient_file) |
542 | fclose(u->transient_file); | |
543 | ||
2c289ea8 | 544 | if (!MANAGER_IS_RELOADING(u->manager)) |
c2756a68 LP |
545 | unit_remove_transient(u); |
546 | ||
c1e1601e LP |
547 | bus_unit_send_removed_signal(u); |
548 | ||
598459ce | 549 | unit_done(u); |
a013b84b | 550 | |
cf9fd508 DM |
551 | sd_bus_slot_unref(u->match_bus_slot); |
552 | ||
05a98afd LP |
553 | sd_bus_track_unref(u->bus_track); |
554 | u->deserialized_refs = strv_free(u->deserialized_refs); | |
555 | ||
a57f7e2c LP |
556 | unit_free_requires_mounts_for(u); |
557 | ||
ac155bb8 MS |
558 | SET_FOREACH(t, u->names, i) |
559 | hashmap_remove_value(u->manager->units, t, u); | |
87f0e418 | 560 | |
4b58153d LP |
561 | if (!sd_id128_is_null(u->invocation_id)) |
562 | hashmap_remove_value(u->manager->units_by_invocation_id, &u->invocation_id, u); | |
563 | ||
97e7d748 MS |
564 | if (u->job) { |
565 | Job *j = u->job; | |
566 | job_uninstall(j); | |
567 | job_free(j); | |
568 | } | |
964e0949 | 569 | |
e0209d83 MS |
570 | if (u->nop_job) { |
571 | Job *j = u->nop_job; | |
572 | job_uninstall(j); | |
573 | job_free(j); | |
574 | } | |
575 | ||
964e0949 | 576 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) |
ac155bb8 | 577 | bidi_set_free(u, u->dependencies[d]); |
964e0949 | 578 | |
ac155bb8 | 579 | if (u->type != _UNIT_TYPE_INVALID) |
71fda00f | 580 | LIST_REMOVE(units_by_type, u->manager->units_by_type[u->type], u); |
ef734fd6 | 581 | |
ac155bb8 | 582 | if (u->in_load_queue) |
71fda00f | 583 | LIST_REMOVE(load_queue, u->manager->load_queue, u); |
87f0e418 | 584 | |
ac155bb8 | 585 | if (u->in_dbus_queue) |
71fda00f | 586 | LIST_REMOVE(dbus_queue, u->manager->dbus_unit_queue, u); |
c1e1601e | 587 | |
ac155bb8 | 588 | if (u->in_cleanup_queue) |
71fda00f | 589 | LIST_REMOVE(cleanup_queue, u->manager->cleanup_queue, u); |
23a177ef | 590 | |
a2d72e26 | 591 | if (u->in_gc_queue) |
c5a97ed1 | 592 | LIST_REMOVE(gc_queue, u->manager->gc_unit_queue, u); |
701cc384 | 593 | |
91a6073e LP |
594 | if (u->in_cgroup_realize_queue) |
595 | LIST_REMOVE(cgroup_realize_queue, u->manager->cgroup_realize_queue, u); | |
87f0e418 | 596 | |
09e24654 LP |
597 | if (u->in_cgroup_empty_queue) |
598 | LIST_REMOVE(cgroup_empty_queue, u->manager->cgroup_empty_queue, u); | |
599 | ||
efdb0237 | 600 | unit_release_cgroup(u); |
72673e86 | 601 | |
d3070fbd LP |
602 | if (!MANAGER_IS_RELOADING(u->manager)) |
603 | unit_unlink_state_files(u); | |
604 | ||
00d9ef85 LP |
605 | unit_unref_uid_gid(u, false); |
606 | ||
5269eb6b | 607 | (void) manager_update_failed_units(u->manager, u, false); |
db785129 | 608 | set_remove(u->manager->startup_units, u); |
f755e3b7 | 609 | |
ac155bb8 | 610 | free(u->description); |
49dbfa7b | 611 | strv_free(u->documentation); |
ac155bb8 | 612 | free(u->fragment_path); |
1b64d026 | 613 | free(u->source_path); |
ae7a7182 | 614 | strv_free(u->dropin_paths); |
ac155bb8 | 615 | free(u->instance); |
87f0e418 | 616 | |
f189ab18 LP |
617 | free(u->job_timeout_reboot_arg); |
618 | ||
ac155bb8 | 619 | set_free_free(u->names); |
87f0e418 | 620 | |
a911bb9a LP |
621 | unit_unwatch_all_pids(u); |
622 | ||
ac155bb8 | 623 | condition_free_list(u->conditions); |
59fccdc5 | 624 | condition_free_list(u->asserts); |
52661efd | 625 | |
6bf0f408 LP |
626 | free(u->reboot_arg); |
627 | ||
702a2d8f LP |
628 | unit_ref_unset(&u->slice); |
629 | ||
ac155bb8 MS |
630 | while (u->refs) |
631 | unit_ref_unset(u->refs); | |
57020a3a | 632 | |
6a48d82f DM |
633 | safe_close(u->ip_accounting_ingress_map_fd); |
634 | safe_close(u->ip_accounting_egress_map_fd); | |
635 | ||
636 | safe_close(u->ipv4_allow_map_fd); | |
637 | safe_close(u->ipv6_allow_map_fd); | |
638 | safe_close(u->ipv4_deny_map_fd); | |
639 | safe_close(u->ipv6_deny_map_fd); | |
640 | ||
641 | bpf_program_unref(u->ip_bpf_ingress); | |
642 | bpf_program_unref(u->ip_bpf_egress); | |
643 | ||
87f0e418 LP |
644 | free(u); |
645 | } | |
646 | ||
647 | UnitActiveState unit_active_state(Unit *u) { | |
648 | assert(u); | |
649 | ||
ac155bb8 | 650 | if (u->load_state == UNIT_MERGED) |
6124958c LP |
651 | return unit_active_state(unit_follow_merge(u)); |
652 | ||
653 | /* After a reload it might happen that a unit is not correctly | |
654 | * loaded but still has a process around. That's why we won't | |
fdf20a31 | 655 | * shortcut failed loading to UNIT_INACTIVE_FAILED. */ |
87f0e418 LP |
656 | |
657 | return UNIT_VTABLE(u)->active_state(u); | |
658 | } | |
659 | ||
10a94420 LP |
660 | const char* unit_sub_state_to_string(Unit *u) { |
661 | assert(u); | |
662 | ||
663 | return UNIT_VTABLE(u)->sub_state_to_string(u); | |
664 | } | |
665 | ||
eef85c4a LP |
666 | static int set_complete_move(Set **s, Set **other) { |
667 | assert(s); | |
668 | assert(other); | |
669 | ||
670 | if (!other) | |
671 | return 0; | |
672 | ||
673 | if (*s) | |
674 | return set_move(*s, *other); | |
675 | else { | |
676 | *s = *other; | |
677 | *other = NULL; | |
678 | } | |
7c0b05e5 | 679 | |
eef85c4a LP |
680 | return 0; |
681 | } | |
682 | ||
683 | static int hashmap_complete_move(Hashmap **s, Hashmap **other) { | |
23a177ef LP |
684 | assert(s); |
685 | assert(other); | |
87f0e418 | 686 | |
23a177ef | 687 | if (!*other) |
7c0b05e5 | 688 | return 0; |
87f0e418 | 689 | |
eef85c4a LP |
690 | if (*s) |
691 | return hashmap_move(*s, *other); | |
692 | else { | |
23a177ef LP |
693 | *s = *other; |
694 | *other = NULL; | |
695 | } | |
7c0b05e5 MS |
696 | |
697 | return 0; | |
23a177ef | 698 | } |
87f0e418 | 699 | |
7c0b05e5 | 700 | static int merge_names(Unit *u, Unit *other) { |
23a177ef LP |
701 | char *t; |
702 | Iterator i; | |
7c0b05e5 | 703 | int r; |
87f0e418 | 704 | |
23a177ef LP |
705 | assert(u); |
706 | assert(other); | |
707 | ||
eef85c4a | 708 | r = set_complete_move(&u->names, &other->names); |
7c0b05e5 MS |
709 | if (r < 0) |
710 | return r; | |
23a177ef | 711 | |
ac155bb8 MS |
712 | set_free_free(other->names); |
713 | other->names = NULL; | |
714 | other->id = NULL; | |
23a177ef | 715 | |
ac155bb8 MS |
716 | SET_FOREACH(t, u->names, i) |
717 | assert_se(hashmap_replace(u->manager->units, t, u) == 0); | |
7c0b05e5 MS |
718 | |
719 | return 0; | |
87f0e418 LP |
720 | } |
721 | ||
09a65f92 MS |
722 | static int reserve_dependencies(Unit *u, Unit *other, UnitDependency d) { |
723 | unsigned n_reserve; | |
724 | ||
725 | assert(u); | |
726 | assert(other); | |
727 | assert(d < _UNIT_DEPENDENCY_MAX); | |
728 | ||
729 | /* | |
730 | * If u does not have this dependency set allocated, there is no need | |
f131770b | 731 | * to reserve anything. In that case other's set will be transferred |
09a65f92 MS |
732 | * as a whole to u by complete_move(). |
733 | */ | |
734 | if (!u->dependencies[d]) | |
735 | return 0; | |
736 | ||
737 | /* merge_dependencies() will skip a u-on-u dependency */ | |
eef85c4a | 738 | n_reserve = hashmap_size(other->dependencies[d]) - !!hashmap_get(other->dependencies[d], u); |
09a65f92 | 739 | |
eef85c4a | 740 | return hashmap_reserve(u->dependencies[d], n_reserve); |
09a65f92 MS |
741 | } |
742 | ||
d1fab3fe | 743 | static void merge_dependencies(Unit *u, Unit *other, const char *other_id, UnitDependency d) { |
23a177ef LP |
744 | Iterator i; |
745 | Unit *back; | |
eef85c4a | 746 | void *v; |
87f0e418 | 747 | int r; |
23a177ef | 748 | |
eef85c4a LP |
749 | /* Merges all dependencies of type 'd' of the unit 'other' into the deps of the unit 'u' */ |
750 | ||
23a177ef LP |
751 | assert(u); |
752 | assert(other); | |
753 | assert(d < _UNIT_DEPENDENCY_MAX); | |
754 | ||
eef85c4a LP |
755 | /* Fix backwards pointers. Let's iterate through all dependendent units of the other unit. */ |
756 | HASHMAP_FOREACH_KEY(v, back, other->dependencies[d], i) { | |
23a177ef LP |
757 | UnitDependency k; |
758 | ||
eef85c4a LP |
759 | /* Let's now iterate through the dependencies of that dependencies of the other units, looking for |
760 | * pointers back, and let's fix them up, to instead point to 'u'. */ | |
761 | ||
e48614c4 | 762 | for (k = 0; k < _UNIT_DEPENDENCY_MAX; k++) { |
e66047ff | 763 | if (back == u) { |
eef85c4a LP |
764 | /* Do not add dependencies between u and itself. */ |
765 | if (hashmap_remove(back->dependencies[k], other)) | |
f2341e0a | 766 | maybe_warn_about_dependency(u, other_id, k); |
e66047ff | 767 | } else { |
eef85c4a LP |
768 | UnitDependencyInfo di_u, di_other, di_merged; |
769 | ||
770 | /* Let's drop this dependency between "back" and "other", and let's create it between | |
771 | * "back" and "u" instead. Let's merge the bit masks of the dependency we are moving, | |
772 | * and any such dependency which might already exist */ | |
773 | ||
774 | di_other.data = hashmap_get(back->dependencies[k], other); | |
775 | if (!di_other.data) | |
776 | continue; /* dependency isn't set, let's try the next one */ | |
777 | ||
778 | di_u.data = hashmap_get(back->dependencies[k], u); | |
779 | ||
780 | di_merged = (UnitDependencyInfo) { | |
781 | .origin_mask = di_u.origin_mask | di_other.origin_mask, | |
782 | .destination_mask = di_u.destination_mask | di_other.destination_mask, | |
783 | }; | |
784 | ||
785 | r = hashmap_remove_and_replace(back->dependencies[k], other, u, di_merged.data); | |
786 | if (r < 0) | |
787 | log_warning_errno(r, "Failed to remove/replace: back=%s other=%s u=%s: %m", back->id, other_id, u->id); | |
788 | assert(r >= 0); | |
789 | ||
790 | /* assert_se(hashmap_remove_and_replace(back->dependencies[k], other, u, di_merged.data) >= 0); */ | |
e66047ff | 791 | } |
e48614c4 | 792 | } |
eef85c4a | 793 | |
23a177ef LP |
794 | } |
795 | ||
e66047ff | 796 | /* Also do not move dependencies on u to itself */ |
eef85c4a | 797 | back = hashmap_remove(other->dependencies[d], u); |
d1fab3fe | 798 | if (back) |
f2341e0a | 799 | maybe_warn_about_dependency(u, other_id, d); |
e66047ff | 800 | |
7c0b05e5 | 801 | /* The move cannot fail. The caller must have performed a reservation. */ |
eef85c4a | 802 | assert_se(hashmap_complete_move(&u->dependencies[d], &other->dependencies[d]) == 0); |
23a177ef | 803 | |
eef85c4a | 804 | other->dependencies[d] = hashmap_free(other->dependencies[d]); |
23a177ef LP |
805 | } |
806 | ||
807 | int unit_merge(Unit *u, Unit *other) { | |
87f0e418 | 808 | UnitDependency d; |
d1fab3fe | 809 | const char *other_id = NULL; |
09a65f92 | 810 | int r; |
87f0e418 LP |
811 | |
812 | assert(u); | |
813 | assert(other); | |
ac155bb8 MS |
814 | assert(u->manager == other->manager); |
815 | assert(u->type != _UNIT_TYPE_INVALID); | |
87f0e418 | 816 | |
cc916967 LP |
817 | other = unit_follow_merge(other); |
818 | ||
23a177ef LP |
819 | if (other == u) |
820 | return 0; | |
821 | ||
ac155bb8 | 822 | if (u->type != other->type) |
9e2f7c11 LP |
823 | return -EINVAL; |
824 | ||
ac155bb8 | 825 | if (!u->instance != !other->instance) |
87f0e418 LP |
826 | return -EINVAL; |
827 | ||
8a993b61 | 828 | if (!unit_type_may_alias(u->type)) /* Merging only applies to unit names that support aliases */ |
934e749e LP |
829 | return -EEXIST; |
830 | ||
ec2ce0c5 | 831 | if (!IN_SET(other->load_state, UNIT_STUB, UNIT_NOT_FOUND)) |
23a177ef | 832 | return -EEXIST; |
87f0e418 | 833 | |
ac155bb8 | 834 | if (other->job) |
819e213f LP |
835 | return -EEXIST; |
836 | ||
e0209d83 MS |
837 | if (other->nop_job) |
838 | return -EEXIST; | |
839 | ||
fdf20a31 | 840 | if (!UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other))) |
819e213f LP |
841 | return -EEXIST; |
842 | ||
d1fab3fe ZJS |
843 | if (other->id) |
844 | other_id = strdupa(other->id); | |
845 | ||
09a65f92 MS |
846 | /* Make reservations to ensure merge_dependencies() won't fail */ |
847 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) { | |
848 | r = reserve_dependencies(u, other, d); | |
849 | /* | |
850 | * We don't rollback reservations if we fail. We don't have | |
851 | * a way to undo reservations. A reservation is not a leak. | |
852 | */ | |
853 | if (r < 0) | |
854 | return r; | |
855 | } | |
856 | ||
87f0e418 | 857 | /* Merge names */ |
7c0b05e5 MS |
858 | r = merge_names(u, other); |
859 | if (r < 0) | |
860 | return r; | |
87f0e418 | 861 | |
57020a3a | 862 | /* Redirect all references */ |
ac155bb8 MS |
863 | while (other->refs) |
864 | unit_ref_set(other->refs, u); | |
57020a3a | 865 | |
87f0e418 LP |
866 | /* Merge dependencies */ |
867 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) | |
d1fab3fe | 868 | merge_dependencies(u, other, other_id, d); |
87f0e418 | 869 | |
ac155bb8 MS |
870 | other->load_state = UNIT_MERGED; |
871 | other->merged_into = u; | |
23a177ef | 872 | |
3616a49c LP |
873 | /* If there is still some data attached to the other node, we |
874 | * don't need it anymore, and can free it. */ | |
ac155bb8 | 875 | if (other->load_state != UNIT_STUB) |
3616a49c LP |
876 | if (UNIT_VTABLE(other)->done) |
877 | UNIT_VTABLE(other)->done(other); | |
878 | ||
879 | unit_add_to_dbus_queue(u); | |
23a177ef LP |
880 | unit_add_to_cleanup_queue(other); |
881 | ||
882 | return 0; | |
883 | } | |
884 | ||
885 | int unit_merge_by_name(Unit *u, const char *name) { | |
934e749e | 886 | _cleanup_free_ char *s = NULL; |
23a177ef | 887 | Unit *other; |
9e2f7c11 | 888 | int r; |
23a177ef LP |
889 | |
890 | assert(u); | |
891 | assert(name); | |
892 | ||
7410616c | 893 | if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) { |
ac155bb8 | 894 | if (!u->instance) |
9e2f7c11 LP |
895 | return -EINVAL; |
896 | ||
7410616c LP |
897 | r = unit_name_replace_instance(name, u->instance, &s); |
898 | if (r < 0) | |
899 | return r; | |
9e2f7c11 LP |
900 | |
901 | name = s; | |
902 | } | |
903 | ||
c2756a68 | 904 | other = manager_get_unit(u->manager, name); |
7410616c LP |
905 | if (other) |
906 | return unit_merge(u, other); | |
23a177ef | 907 | |
7410616c | 908 | return unit_add_name(u, name); |
23a177ef LP |
909 | } |
910 | ||
911 | Unit* unit_follow_merge(Unit *u) { | |
912 | assert(u); | |
913 | ||
ac155bb8 MS |
914 | while (u->load_state == UNIT_MERGED) |
915 | assert_se(u = u->merged_into); | |
23a177ef LP |
916 | |
917 | return u; | |
918 | } | |
919 | ||
920 | int unit_add_exec_dependencies(Unit *u, ExecContext *c) { | |
ada5e276 YW |
921 | ExecDirectoryType dt; |
922 | char **dp; | |
23a177ef LP |
923 | int r; |
924 | ||
925 | assert(u); | |
926 | assert(c); | |
927 | ||
36be24c8 | 928 | if (c->working_directory) { |
eef85c4a | 929 | r = unit_require_mounts_for(u, c->working_directory, UNIT_DEPENDENCY_FILE); |
36be24c8 ZJS |
930 | if (r < 0) |
931 | return r; | |
932 | } | |
933 | ||
934 | if (c->root_directory) { | |
eef85c4a | 935 | r = unit_require_mounts_for(u, c->root_directory, UNIT_DEPENDENCY_FILE); |
36be24c8 ZJS |
936 | if (r < 0) |
937 | return r; | |
938 | } | |
939 | ||
915e6d16 | 940 | if (c->root_image) { |
eef85c4a | 941 | r = unit_require_mounts_for(u, c->root_image, UNIT_DEPENDENCY_FILE); |
915e6d16 LP |
942 | if (r < 0) |
943 | return r; | |
944 | } | |
945 | ||
72fd1768 | 946 | for (dt = 0; dt < _EXEC_DIRECTORY_TYPE_MAX; dt++) { |
ada5e276 YW |
947 | if (!u->manager->prefix[dt]) |
948 | continue; | |
949 | ||
950 | STRV_FOREACH(dp, c->directories[dt].paths) { | |
951 | _cleanup_free_ char *p; | |
952 | ||
953 | p = strjoin(u->manager->prefix[dt], "/", *dp); | |
954 | if (!p) | |
955 | return -ENOMEM; | |
956 | ||
eef85c4a | 957 | r = unit_require_mounts_for(u, p, UNIT_DEPENDENCY_FILE); |
ada5e276 YW |
958 | if (r < 0) |
959 | return r; | |
960 | } | |
961 | } | |
962 | ||
463d0d15 | 963 | if (!MANAGER_IS_SYSTEM(u->manager)) |
b46a529c LP |
964 | return 0; |
965 | ||
966 | if (c->private_tmp) { | |
d71f0505 LP |
967 | const char *p; |
968 | ||
969 | FOREACH_STRING(p, "/tmp", "/var/tmp") { | |
eef85c4a | 970 | r = unit_require_mounts_for(u, p, UNIT_DEPENDENCY_FILE); |
d71f0505 LP |
971 | if (r < 0) |
972 | return r; | |
973 | } | |
b46a529c | 974 | |
eef85c4a | 975 | r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_TMPFILES_SETUP_SERVICE, NULL, true, UNIT_DEPENDENCY_FILE); |
b46a529c LP |
976 | if (r < 0) |
977 | return r; | |
978 | } | |
979 | ||
52c239d7 LB |
980 | if (!IN_SET(c->std_output, |
981 | EXEC_OUTPUT_JOURNAL, EXEC_OUTPUT_JOURNAL_AND_CONSOLE, | |
982 | EXEC_OUTPUT_KMSG, EXEC_OUTPUT_KMSG_AND_CONSOLE, | |
983 | EXEC_OUTPUT_SYSLOG, EXEC_OUTPUT_SYSLOG_AND_CONSOLE) && | |
984 | !IN_SET(c->std_error, | |
985 | EXEC_OUTPUT_JOURNAL, EXEC_OUTPUT_JOURNAL_AND_CONSOLE, | |
986 | EXEC_OUTPUT_KMSG, EXEC_OUTPUT_KMSG_AND_CONSOLE, | |
987 | EXEC_OUTPUT_SYSLOG, EXEC_OUTPUT_SYSLOG_AND_CONSOLE)) | |
23a177ef LP |
988 | return 0; |
989 | ||
990 | /* If syslog or kernel logging is requested, make sure our own | |
991 | * logging daemon is run first. */ | |
992 | ||
eef85c4a | 993 | r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_JOURNALD_SOCKET, NULL, true, UNIT_DEPENDENCY_FILE); |
b46a529c LP |
994 | if (r < 0) |
995 | return r; | |
23a177ef | 996 | |
87f0e418 LP |
997 | return 0; |
998 | } | |
999 | ||
87f0e418 LP |
1000 | const char *unit_description(Unit *u) { |
1001 | assert(u); | |
1002 | ||
ac155bb8 MS |
1003 | if (u->description) |
1004 | return u->description; | |
87f0e418 | 1005 | |
ac155bb8 | 1006 | return strna(u->id); |
87f0e418 LP |
1007 | } |
1008 | ||
eef85c4a LP |
1009 | static void print_unit_dependency_mask(FILE *f, const char *kind, UnitDependencyMask mask, bool *space) { |
1010 | const struct { | |
1011 | UnitDependencyMask mask; | |
1012 | const char *name; | |
1013 | } table[] = { | |
1014 | { UNIT_DEPENDENCY_FILE, "file" }, | |
1015 | { UNIT_DEPENDENCY_IMPLICIT, "implicit" }, | |
1016 | { UNIT_DEPENDENCY_DEFAULT, "default" }, | |
1017 | { UNIT_DEPENDENCY_UDEV, "udev" }, | |
1018 | { UNIT_DEPENDENCY_PATH, "path" }, | |
1019 | { UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT, "mountinfo-implicit" }, | |
1020 | { UNIT_DEPENDENCY_MOUNTINFO_DEFAULT, "mountinfo-default" }, | |
1021 | { UNIT_DEPENDENCY_PROC_SWAP, "proc-swap" }, | |
1022 | }; | |
1023 | size_t i; | |
1024 | ||
1025 | assert(f); | |
1026 | assert(kind); | |
1027 | assert(space); | |
1028 | ||
1029 | for (i = 0; i < ELEMENTSOF(table); i++) { | |
1030 | ||
1031 | if (mask == 0) | |
1032 | break; | |
1033 | ||
1034 | if ((mask & table[i].mask) == table[i].mask) { | |
1035 | if (*space) | |
1036 | fputc(' ', f); | |
1037 | else | |
1038 | *space = true; | |
1039 | ||
1040 | fputs(kind, f); | |
1041 | fputs("-", f); | |
1042 | fputs(table[i].name, f); | |
1043 | ||
1044 | mask &= ~table[i].mask; | |
1045 | } | |
1046 | } | |
1047 | ||
1048 | assert(mask == 0); | |
1049 | } | |
1050 | ||
87f0e418 | 1051 | void unit_dump(Unit *u, FILE *f, const char *prefix) { |
49dbfa7b | 1052 | char *t, **j; |
87f0e418 LP |
1053 | UnitDependency d; |
1054 | Iterator i; | |
47be870b | 1055 | const char *prefix2; |
173e3821 | 1056 | char |
a483fb59 | 1057 | timestamp0[FORMAT_TIMESTAMP_MAX], |
173e3821 LP |
1058 | timestamp1[FORMAT_TIMESTAMP_MAX], |
1059 | timestamp2[FORMAT_TIMESTAMP_MAX], | |
1060 | timestamp3[FORMAT_TIMESTAMP_MAX], | |
faf919f1 LP |
1061 | timestamp4[FORMAT_TIMESTAMP_MAX], |
1062 | timespan[FORMAT_TIMESPAN_MAX]; | |
a7f241db | 1063 | Unit *following; |
eeaedb7c | 1064 | _cleanup_set_free_ Set *following_set = NULL; |
05a98afd | 1065 | const char *n; |
02638280 LP |
1066 | CGroupMask m; |
1067 | int r; | |
87f0e418 LP |
1068 | |
1069 | assert(u); | |
ac155bb8 | 1070 | assert(u->type >= 0); |
87f0e418 | 1071 | |
4c940960 | 1072 | prefix = strempty(prefix); |
63c372cb | 1073 | prefix2 = strjoina(prefix, "\t"); |
87f0e418 LP |
1074 | |
1075 | fprintf(f, | |
40d50879 | 1076 | "%s-> Unit %s:\n" |
87f0e418 | 1077 | "%s\tDescription: %s\n" |
9e2f7c11 | 1078 | "%s\tInstance: %s\n" |
87f0e418 | 1079 | "%s\tUnit Load State: %s\n" |
2fad8195 | 1080 | "%s\tUnit Active State: %s\n" |
b895d155 | 1081 | "%s\tState Change Timestamp: %s\n" |
173e3821 | 1082 | "%s\tInactive Exit Timestamp: %s\n" |
2fad8195 | 1083 | "%s\tActive Enter Timestamp: %s\n" |
701cc384 | 1084 | "%s\tActive Exit Timestamp: %s\n" |
173e3821 | 1085 | "%s\tInactive Enter Timestamp: %s\n" |
45fb0699 | 1086 | "%s\tGC Check Good: %s\n" |
9444b1f2 | 1087 | "%s\tNeed Daemon Reload: %s\n" |
c2756a68 | 1088 | "%s\tTransient: %s\n" |
f5869324 | 1089 | "%s\tPerpetual: %s\n" |
4ad49000 LP |
1090 | "%s\tSlice: %s\n" |
1091 | "%s\tCGroup: %s\n" | |
aae7e17f | 1092 | "%s\tCGroup realized: %s\n", |
ac155bb8 | 1093 | prefix, u->id, |
87f0e418 | 1094 | prefix, unit_description(u), |
ac155bb8 MS |
1095 | prefix, strna(u->instance), |
1096 | prefix, unit_load_state_to_string(u->load_state), | |
2fad8195 | 1097 | prefix, unit_active_state_to_string(unit_active_state(u)), |
a483fb59 | 1098 | prefix, strna(format_timestamp(timestamp0, sizeof(timestamp0), u->state_change_timestamp.realtime)), |
ac155bb8 MS |
1099 | prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->inactive_exit_timestamp.realtime)), |
1100 | prefix, strna(format_timestamp(timestamp2, sizeof(timestamp2), u->active_enter_timestamp.realtime)), | |
1101 | prefix, strna(format_timestamp(timestamp3, sizeof(timestamp3), u->active_exit_timestamp.realtime)), | |
1102 | prefix, strna(format_timestamp(timestamp4, sizeof(timestamp4), u->inactive_enter_timestamp.realtime)), | |
45fb0699 | 1103 | prefix, yes_no(unit_check_gc(u)), |
9444b1f2 | 1104 | prefix, yes_no(unit_need_daemon_reload(u)), |
c2756a68 | 1105 | prefix, yes_no(u->transient), |
f5869324 | 1106 | prefix, yes_no(u->perpetual), |
4ad49000 LP |
1107 | prefix, strna(unit_slice_name(u)), |
1108 | prefix, strna(u->cgroup_path), | |
aae7e17f FB |
1109 | prefix, yes_no(u->cgroup_realized)); |
1110 | ||
1111 | if (u->cgroup_realized_mask != 0) { | |
1112 | _cleanup_free_ char *s = NULL; | |
1113 | (void) cg_mask_to_string(u->cgroup_realized_mask, &s); | |
02638280 LP |
1114 | fprintf(f, "%s\tCGroup realized mask: %s\n", prefix, strnull(s)); |
1115 | } | |
1116 | if (u->cgroup_enabled_mask != 0) { | |
1117 | _cleanup_free_ char *s = NULL; | |
1118 | (void) cg_mask_to_string(u->cgroup_enabled_mask, &s); | |
1119 | fprintf(f, "%s\tCGroup enabled mask: %s\n", prefix, strnull(s)); | |
1120 | } | |
1121 | m = unit_get_own_mask(u); | |
1122 | if (m != 0) { | |
1123 | _cleanup_free_ char *s = NULL; | |
1124 | (void) cg_mask_to_string(m, &s); | |
1125 | fprintf(f, "%s\tCGroup own mask: %s\n", prefix, strnull(s)); | |
aae7e17f | 1126 | } |
02638280 LP |
1127 | m = unit_get_members_mask(u); |
1128 | if (m != 0) { | |
aae7e17f | 1129 | _cleanup_free_ char *s = NULL; |
02638280 | 1130 | (void) cg_mask_to_string(m, &s); |
aae7e17f FB |
1131 | fprintf(f, "%s\tCGroup members mask: %s\n", prefix, strnull(s)); |
1132 | } | |
0301abf4 | 1133 | |
ac155bb8 | 1134 | SET_FOREACH(t, u->names, i) |
87f0e418 LP |
1135 | fprintf(f, "%s\tName: %s\n", prefix, t); |
1136 | ||
4b58153d LP |
1137 | if (!sd_id128_is_null(u->invocation_id)) |
1138 | fprintf(f, "%s\tInvocation ID: " SD_ID128_FORMAT_STR "\n", | |
1139 | prefix, SD_ID128_FORMAT_VAL(u->invocation_id)); | |
1140 | ||
49dbfa7b LP |
1141 | STRV_FOREACH(j, u->documentation) |
1142 | fprintf(f, "%s\tDocumentation: %s\n", prefix, *j); | |
1143 | ||
eeaedb7c LP |
1144 | following = unit_following(u); |
1145 | if (following) | |
ac155bb8 | 1146 | fprintf(f, "%s\tFollowing: %s\n", prefix, following->id); |
8fe914ec | 1147 | |
eeaedb7c LP |
1148 | r = unit_following_set(u, &following_set); |
1149 | if (r >= 0) { | |
1150 | Unit *other; | |
1151 | ||
1152 | SET_FOREACH(other, following_set, i) | |
1153 | fprintf(f, "%s\tFollowing Set Member: %s\n", prefix, other->id); | |
1154 | } | |
1155 | ||
ac155bb8 MS |
1156 | if (u->fragment_path) |
1157 | fprintf(f, "%s\tFragment Path: %s\n", prefix, u->fragment_path); | |
23a177ef | 1158 | |
1b64d026 LP |
1159 | if (u->source_path) |
1160 | fprintf(f, "%s\tSource Path: %s\n", prefix, u->source_path); | |
1161 | ||
ae7a7182 | 1162 | STRV_FOREACH(j, u->dropin_paths) |
2875e22b | 1163 | fprintf(f, "%s\tDropIn Path: %s\n", prefix, *j); |
ae7a7182 | 1164 | |
36c16a7c | 1165 | if (u->job_timeout != USEC_INFINITY) |
2fa4092c | 1166 | fprintf(f, "%s\tJob Timeout: %s\n", prefix, format_timespan(timespan, sizeof(timespan), u->job_timeout, 0)); |
faf919f1 | 1167 | |
87a47f99 LN |
1168 | if (u->job_timeout_action != EMERGENCY_ACTION_NONE) |
1169 | fprintf(f, "%s\tJob Timeout Action: %s\n", prefix, emergency_action_to_string(u->job_timeout_action)); | |
f189ab18 LP |
1170 | |
1171 | if (u->job_timeout_reboot_arg) | |
1172 | fprintf(f, "%s\tJob Timeout Reboot Argument: %s\n", prefix, u->job_timeout_reboot_arg); | |
1173 | ||
59fccdc5 LP |
1174 | condition_dump_list(u->conditions, f, prefix, condition_type_to_string); |
1175 | condition_dump_list(u->asserts, f, prefix, assert_type_to_string); | |
52661efd | 1176 | |
ac155bb8 | 1177 | if (dual_timestamp_is_set(&u->condition_timestamp)) |
2791a8f8 LP |
1178 | fprintf(f, |
1179 | "%s\tCondition Timestamp: %s\n" | |
1180 | "%s\tCondition Result: %s\n", | |
ac155bb8 MS |
1181 | prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->condition_timestamp.realtime)), |
1182 | prefix, yes_no(u->condition_result)); | |
2791a8f8 | 1183 | |
59fccdc5 LP |
1184 | if (dual_timestamp_is_set(&u->assert_timestamp)) |
1185 | fprintf(f, | |
1186 | "%s\tAssert Timestamp: %s\n" | |
1187 | "%s\tAssert Result: %s\n", | |
1188 | prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->assert_timestamp.realtime)), | |
1189 | prefix, yes_no(u->assert_result)); | |
1190 | ||
87f0e418 | 1191 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) { |
eef85c4a | 1192 | UnitDependencyInfo di; |
87f0e418 LP |
1193 | Unit *other; |
1194 | ||
eef85c4a LP |
1195 | HASHMAP_FOREACH_KEY(di.data, other, u->dependencies[d], i) { |
1196 | bool space = false; | |
1197 | ||
1198 | fprintf(f, "%s\t%s: %s (", prefix, unit_dependency_to_string(d), other->id); | |
1199 | ||
1200 | print_unit_dependency_mask(f, "origin", di.origin_mask, &space); | |
1201 | print_unit_dependency_mask(f, "destination", di.destination_mask, &space); | |
1202 | ||
1203 | fputs(")\n", f); | |
1204 | } | |
87f0e418 LP |
1205 | } |
1206 | ||
eef85c4a LP |
1207 | if (!hashmap_isempty(u->requires_mounts_for)) { |
1208 | UnitDependencyInfo di; | |
1209 | const char *path; | |
1210 | ||
1211 | HASHMAP_FOREACH_KEY(di.data, path, u->requires_mounts_for, i) { | |
1212 | bool space = false; | |
7c8fa05c | 1213 | |
eef85c4a | 1214 | fprintf(f, "%s\tRequiresMountsFor: %s (", prefix, path); |
7c8fa05c | 1215 | |
eef85c4a LP |
1216 | print_unit_dependency_mask(f, "origin", di.origin_mask, &space); |
1217 | print_unit_dependency_mask(f, "destination", di.destination_mask, &space); | |
1218 | ||
1219 | fputs(")\n", f); | |
1220 | } | |
7c8fa05c LP |
1221 | } |
1222 | ||
ac155bb8 | 1223 | if (u->load_state == UNIT_LOADED) { |
ab1f0633 | 1224 | |
b0650475 | 1225 | fprintf(f, |
a40eb732 | 1226 | "%s\tStopWhenUnneeded: %s\n" |
b5e9dba8 LP |
1227 | "%s\tRefuseManualStart: %s\n" |
1228 | "%s\tRefuseManualStop: %s\n" | |
222ae6a8 | 1229 | "%s\tDefaultDependencies: %s\n" |
d420282b | 1230 | "%s\tOnFailureJobMode: %s\n" |
36b4a7ba | 1231 | "%s\tIgnoreOnIsolate: %s\n", |
ac155bb8 MS |
1232 | prefix, yes_no(u->stop_when_unneeded), |
1233 | prefix, yes_no(u->refuse_manual_start), | |
1234 | prefix, yes_no(u->refuse_manual_stop), | |
1235 | prefix, yes_no(u->default_dependencies), | |
d420282b | 1236 | prefix, job_mode_to_string(u->on_failure_job_mode), |
36b4a7ba | 1237 | prefix, yes_no(u->ignore_on_isolate)); |
ac155bb8 | 1238 | |
23a177ef LP |
1239 | if (UNIT_VTABLE(u)->dump) |
1240 | UNIT_VTABLE(u)->dump(u, f, prefix2); | |
b0650475 | 1241 | |
ac155bb8 | 1242 | } else if (u->load_state == UNIT_MERGED) |
b0650475 LP |
1243 | fprintf(f, |
1244 | "%s\tMerged into: %s\n", | |
ac155bb8 MS |
1245 | prefix, u->merged_into->id); |
1246 | else if (u->load_state == UNIT_ERROR) | |
1247 | fprintf(f, "%s\tLoad Error Code: %s\n", prefix, strerror(-u->load_error)); | |
8821a00f | 1248 | |
05a98afd LP |
1249 | for (n = sd_bus_track_first(u->bus_track); n; n = sd_bus_track_next(u->bus_track)) |
1250 | fprintf(f, "%s\tBus Ref: %s\n", prefix, n); | |
87f0e418 | 1251 | |
ac155bb8 MS |
1252 | if (u->job) |
1253 | job_dump(u->job, f, prefix2); | |
87f0e418 | 1254 | |
e0209d83 MS |
1255 | if (u->nop_job) |
1256 | job_dump(u->nop_job, f, prefix2); | |
87f0e418 LP |
1257 | } |
1258 | ||
1259 | /* Common implementation for multiple backends */ | |
e537352b | 1260 | int unit_load_fragment_and_dropin(Unit *u) { |
23a177ef LP |
1261 | int r; |
1262 | ||
1263 | assert(u); | |
23a177ef | 1264 | |
e48614c4 | 1265 | /* Load a .{service,socket,...} file */ |
4ad49000 LP |
1266 | r = unit_load_fragment(u); |
1267 | if (r < 0) | |
23a177ef LP |
1268 | return r; |
1269 | ||
ac155bb8 | 1270 | if (u->load_state == UNIT_STUB) |
23a177ef LP |
1271 | return -ENOENT; |
1272 | ||
9e4ea9cc ZJS |
1273 | /* Load drop-in directory data. If u is an alias, we might be reloading the |
1274 | * target unit needlessly. But we cannot be sure which drops-ins have already | |
1275 | * been loaded and which not, at least without doing complicated book-keeping, | |
1276 | * so let's always reread all drop-ins. */ | |
1277 | return unit_load_dropin(unit_follow_merge(u)); | |
23a177ef LP |
1278 | } |
1279 | ||
1280 | /* Common implementation for multiple backends */ | |
e537352b | 1281 | int unit_load_fragment_and_dropin_optional(Unit *u) { |
23a177ef | 1282 | int r; |
87f0e418 LP |
1283 | |
1284 | assert(u); | |
1285 | ||
23a177ef LP |
1286 | /* Same as unit_load_fragment_and_dropin(), but whether |
1287 | * something can be loaded or not doesn't matter. */ | |
1288 | ||
1289 | /* Load a .service file */ | |
4ad49000 LP |
1290 | r = unit_load_fragment(u); |
1291 | if (r < 0) | |
87f0e418 LP |
1292 | return r; |
1293 | ||
ac155bb8 MS |
1294 | if (u->load_state == UNIT_STUB) |
1295 | u->load_state = UNIT_LOADED; | |
d46de8a1 | 1296 | |
9e4ea9cc ZJS |
1297 | /* Load drop-in directory data */ |
1298 | return unit_load_dropin(unit_follow_merge(u)); | |
87f0e418 LP |
1299 | } |
1300 | ||
bba34eed | 1301 | int unit_add_default_target_dependency(Unit *u, Unit *target) { |
98bc2000 LP |
1302 | assert(u); |
1303 | assert(target); | |
1304 | ||
ac155bb8 | 1305 | if (target->type != UNIT_TARGET) |
98bc2000 LP |
1306 | return 0; |
1307 | ||
35b8ca3a | 1308 | /* Only add the dependency if both units are loaded, so that |
bba34eed | 1309 | * that loop check below is reliable */ |
ac155bb8 MS |
1310 | if (u->load_state != UNIT_LOADED || |
1311 | target->load_state != UNIT_LOADED) | |
bba34eed LP |
1312 | return 0; |
1313 | ||
21256a2b LP |
1314 | /* If either side wants no automatic dependencies, then let's |
1315 | * skip this */ | |
ac155bb8 MS |
1316 | if (!u->default_dependencies || |
1317 | !target->default_dependencies) | |
21256a2b LP |
1318 | return 0; |
1319 | ||
98bc2000 | 1320 | /* Don't create loops */ |
eef85c4a | 1321 | if (hashmap_get(target->dependencies[UNIT_BEFORE], u)) |
98bc2000 LP |
1322 | return 0; |
1323 | ||
eef85c4a | 1324 | return unit_add_dependency(target, UNIT_AFTER, u, true, UNIT_DEPENDENCY_DEFAULT); |
98bc2000 LP |
1325 | } |
1326 | ||
e954c9cf | 1327 | static int unit_add_target_dependencies(Unit *u) { |
a016b922 | 1328 | |
21256a2b LP |
1329 | static const UnitDependency deps[] = { |
1330 | UNIT_REQUIRED_BY, | |
be7d9ff7 | 1331 | UNIT_REQUISITE_OF, |
21256a2b LP |
1332 | UNIT_WANTED_BY, |
1333 | UNIT_BOUND_BY | |
1334 | }; | |
1335 | ||
21256a2b | 1336 | unsigned k; |
db57f3c6 | 1337 | int r = 0; |
98bc2000 LP |
1338 | |
1339 | assert(u); | |
1340 | ||
eef85c4a LP |
1341 | for (k = 0; k < ELEMENTSOF(deps); k++) { |
1342 | Unit *target; | |
1343 | Iterator i; | |
1344 | void *v; | |
1345 | ||
1346 | HASHMAP_FOREACH_KEY(v, target, u->dependencies[deps[k]], i) { | |
a016b922 LP |
1347 | r = unit_add_default_target_dependency(u, target); |
1348 | if (r < 0) | |
21256a2b | 1349 | return r; |
a016b922 | 1350 | } |
eef85c4a | 1351 | } |
a016b922 | 1352 | |
e954c9cf LP |
1353 | return r; |
1354 | } | |
4ad49000 | 1355 | |
e954c9cf | 1356 | static int unit_add_slice_dependencies(Unit *u) { |
eef85c4a | 1357 | UnitDependencyMask mask; |
e954c9cf | 1358 | assert(u); |
b81884e7 | 1359 | |
35b7ff80 | 1360 | if (!UNIT_HAS_CGROUP_CONTEXT(u)) |
e954c9cf LP |
1361 | return 0; |
1362 | ||
eef85c4a LP |
1363 | /* Slice units are implicitly ordered against their parent slices (as this relationship is encoded in the |
1364 | name), while all other units are ordered based on configuration (as in their case Slice= configures the | |
1365 | relationship). */ | |
1366 | mask = u->type == UNIT_SLICE ? UNIT_DEPENDENCY_IMPLICIT : UNIT_DEPENDENCY_FILE; | |
1367 | ||
e954c9cf | 1368 | if (UNIT_ISSET(u->slice)) |
eef85c4a | 1369 | return unit_add_two_dependencies(u, UNIT_AFTER, UNIT_REQUIRES, UNIT_DEREF(u->slice), true, mask); |
e954c9cf | 1370 | |
8c8da0e0 | 1371 | if (unit_has_name(u, SPECIAL_ROOT_SLICE)) |
d1fab3fe ZJS |
1372 | return 0; |
1373 | ||
eef85c4a | 1374 | return unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_ROOT_SLICE, NULL, true, mask); |
98bc2000 LP |
1375 | } |
1376 | ||
e954c9cf | 1377 | static int unit_add_mount_dependencies(Unit *u) { |
eef85c4a LP |
1378 | UnitDependencyInfo di; |
1379 | const char *path; | |
1380 | Iterator i; | |
9588bc32 LP |
1381 | int r; |
1382 | ||
1383 | assert(u); | |
1384 | ||
eef85c4a LP |
1385 | HASHMAP_FOREACH_KEY(di.data, path, u->requires_mounts_for, i) { |
1386 | char prefix[strlen(path) + 1]; | |
9588bc32 | 1387 | |
eef85c4a | 1388 | PATH_FOREACH_PREFIX_MORE(prefix, path) { |
c7c89abb | 1389 | _cleanup_free_ char *p = NULL; |
9588bc32 LP |
1390 | Unit *m; |
1391 | ||
c7c89abb | 1392 | r = unit_name_from_path(prefix, ".mount", &p); |
9588bc32 LP |
1393 | if (r < 0) |
1394 | return r; | |
c7c89abb FB |
1395 | |
1396 | m = manager_get_unit(u->manager, p); | |
1397 | if (!m) { | |
1398 | /* Make sure to load the mount unit if | |
1399 | * it exists. If so the dependencies | |
1400 | * on this unit will be added later | |
1401 | * during the loading of the mount | |
1402 | * unit. */ | |
1403 | (void) manager_load_unit_prepare(u->manager, p, NULL, NULL, &m); | |
9588bc32 | 1404 | continue; |
c7c89abb | 1405 | } |
9588bc32 LP |
1406 | if (m == u) |
1407 | continue; | |
1408 | ||
1409 | if (m->load_state != UNIT_LOADED) | |
1410 | continue; | |
1411 | ||
eef85c4a | 1412 | r = unit_add_dependency(u, UNIT_AFTER, m, true, di.origin_mask); |
9588bc32 LP |
1413 | if (r < 0) |
1414 | return r; | |
1415 | ||
1416 | if (m->fragment_path) { | |
eef85c4a | 1417 | r = unit_add_dependency(u, UNIT_REQUIRES, m, true, di.origin_mask); |
9588bc32 LP |
1418 | if (r < 0) |
1419 | return r; | |
1420 | } | |
1421 | } | |
1422 | } | |
1423 | ||
1424 | return 0; | |
1425 | } | |
1426 | ||
95ae05c0 WC |
1427 | static int unit_add_startup_units(Unit *u) { |
1428 | CGroupContext *c; | |
5269eb6b | 1429 | int r; |
95ae05c0 WC |
1430 | |
1431 | c = unit_get_cgroup_context(u); | |
db785129 LP |
1432 | if (!c) |
1433 | return 0; | |
1434 | ||
d53d9474 | 1435 | if (c->startup_cpu_shares == CGROUP_CPU_SHARES_INVALID && |
13c31542 | 1436 | c->startup_io_weight == CGROUP_WEIGHT_INVALID && |
d53d9474 | 1437 | c->startup_blockio_weight == CGROUP_BLKIO_WEIGHT_INVALID) |
db785129 LP |
1438 | return 0; |
1439 | ||
5269eb6b LP |
1440 | r = set_ensure_allocated(&u->manager->startup_units, NULL); |
1441 | if (r < 0) | |
1442 | return r; | |
1443 | ||
756c09e6 | 1444 | return set_put(u->manager->startup_units, u); |
95ae05c0 WC |
1445 | } |
1446 | ||
87f0e418 LP |
1447 | int unit_load(Unit *u) { |
1448 | int r; | |
1449 | ||
1450 | assert(u); | |
1451 | ||
ac155bb8 | 1452 | if (u->in_load_queue) { |
71fda00f | 1453 | LIST_REMOVE(load_queue, u->manager->load_queue, u); |
ac155bb8 | 1454 | u->in_load_queue = false; |
87f0e418 LP |
1455 | } |
1456 | ||
ac155bb8 | 1457 | if (u->type == _UNIT_TYPE_INVALID) |
e537352b LP |
1458 | return -EINVAL; |
1459 | ||
ac155bb8 | 1460 | if (u->load_state != UNIT_STUB) |
87f0e418 LP |
1461 | return 0; |
1462 | ||
4f4afc88 LP |
1463 | if (u->transient_file) { |
1464 | r = fflush_and_check(u->transient_file); | |
1465 | if (r < 0) | |
1466 | goto fail; | |
1467 | ||
1468 | fclose(u->transient_file); | |
1469 | u->transient_file = NULL; | |
f9ba08fb | 1470 | |
f76707da | 1471 | u->fragment_mtime = now(CLOCK_REALTIME); |
4f4afc88 LP |
1472 | } |
1473 | ||
c2756a68 LP |
1474 | if (UNIT_VTABLE(u)->load) { |
1475 | r = UNIT_VTABLE(u)->load(u); | |
1476 | if (r < 0) | |
87f0e418 | 1477 | goto fail; |
c2756a68 | 1478 | } |
23a177ef | 1479 | |
ac155bb8 | 1480 | if (u->load_state == UNIT_STUB) { |
23a177ef LP |
1481 | r = -ENOENT; |
1482 | goto fail; | |
1483 | } | |
1484 | ||
7c8fa05c | 1485 | if (u->load_state == UNIT_LOADED) { |
c2756a68 | 1486 | |
e954c9cf LP |
1487 | r = unit_add_target_dependencies(u); |
1488 | if (r < 0) | |
1489 | goto fail; | |
1490 | ||
1491 | r = unit_add_slice_dependencies(u); | |
1492 | if (r < 0) | |
1493 | goto fail; | |
c2756a68 | 1494 | |
e954c9cf | 1495 | r = unit_add_mount_dependencies(u); |
7c8fa05c | 1496 | if (r < 0) |
c2756a68 | 1497 | goto fail; |
7c8fa05c | 1498 | |
95ae05c0 WC |
1499 | r = unit_add_startup_units(u); |
1500 | if (r < 0) | |
1501 | goto fail; | |
1502 | ||
eef85c4a | 1503 | if (u->on_failure_job_mode == JOB_ISOLATE && hashmap_size(u->dependencies[UNIT_ON_FAILURE]) > 1) { |
f2341e0a | 1504 | log_unit_error(u, "More than one OnFailure= dependencies specified but OnFailureJobMode=isolate set. Refusing."); |
c2756a68 LP |
1505 | r = -EINVAL; |
1506 | goto fail; | |
1507 | } | |
bc432dc7 | 1508 | |
a2df3ea4 MK |
1509 | if (u->job_running_timeout != USEC_INFINITY && u->job_running_timeout > u->job_timeout) |
1510 | log_unit_warning(u, "JobRunningTimeoutSec= is greater than JobTimeoutSec=, it has no effect."); | |
1511 | ||
bc432dc7 | 1512 | unit_update_cgroup_members_masks(u); |
f68319bb LP |
1513 | } |
1514 | ||
ac155bb8 | 1515 | assert((u->load_state != UNIT_MERGED) == !u->merged_into); |
23a177ef LP |
1516 | |
1517 | unit_add_to_dbus_queue(unit_follow_merge(u)); | |
701cc384 | 1518 | unit_add_to_gc_queue(u); |
87f0e418 | 1519 | |
87f0e418 LP |
1520 | return 0; |
1521 | ||
1522 | fail: | |
c2756a68 | 1523 | u->load_state = u->load_state == UNIT_STUB ? UNIT_NOT_FOUND : UNIT_ERROR; |
ac155bb8 | 1524 | u->load_error = r; |
c1e1601e | 1525 | unit_add_to_dbus_queue(u); |
9a46fc3b | 1526 | unit_add_to_gc_queue(u); |
23a177ef | 1527 | |
f2341e0a | 1528 | log_unit_debug_errno(u, r, "Failed to load configuration: %m"); |
23a177ef | 1529 | |
87f0e418 LP |
1530 | return r; |
1531 | } | |
1532 | ||
49365733 LP |
1533 | static bool unit_condition_test_list(Unit *u, Condition *first, const char *(*to_string)(ConditionType t)) { |
1534 | Condition *c; | |
1535 | int triggered = -1; | |
1536 | ||
1537 | assert(u); | |
1538 | assert(to_string); | |
1539 | ||
1540 | /* If the condition list is empty, then it is true */ | |
1541 | if (!first) | |
1542 | return true; | |
1543 | ||
1544 | /* Otherwise, if all of the non-trigger conditions apply and | |
1545 | * if any of the trigger conditions apply (unless there are | |
1546 | * none) we return true */ | |
1547 | LIST_FOREACH(conditions, c, first) { | |
1548 | int r; | |
1549 | ||
1550 | r = condition_test(c); | |
1551 | if (r < 0) | |
f2341e0a LP |
1552 | log_unit_warning(u, |
1553 | "Couldn't determine result for %s=%s%s%s, assuming failed: %m", | |
49365733 LP |
1554 | to_string(c->type), |
1555 | c->trigger ? "|" : "", | |
1556 | c->negate ? "!" : "", | |
f2341e0a | 1557 | c->parameter); |
49365733 | 1558 | else |
f2341e0a LP |
1559 | log_unit_debug(u, |
1560 | "%s=%s%s%s %s.", | |
49365733 LP |
1561 | to_string(c->type), |
1562 | c->trigger ? "|" : "", | |
1563 | c->negate ? "!" : "", | |
1564 | c->parameter, | |
f2341e0a | 1565 | condition_result_to_string(c->result)); |
49365733 LP |
1566 | |
1567 | if (!c->trigger && r <= 0) | |
1568 | return false; | |
1569 | ||
1570 | if (c->trigger && triggered <= 0) | |
1571 | triggered = r > 0; | |
1572 | } | |
1573 | ||
1574 | return triggered != 0; | |
1575 | } | |
1576 | ||
9588bc32 | 1577 | static bool unit_condition_test(Unit *u) { |
90bbc946 LP |
1578 | assert(u); |
1579 | ||
ac155bb8 | 1580 | dual_timestamp_get(&u->condition_timestamp); |
49365733 | 1581 | u->condition_result = unit_condition_test_list(u, u->conditions, condition_type_to_string); |
90bbc946 | 1582 | |
ac155bb8 | 1583 | return u->condition_result; |
90bbc946 LP |
1584 | } |
1585 | ||
59fccdc5 LP |
1586 | static bool unit_assert_test(Unit *u) { |
1587 | assert(u); | |
1588 | ||
1589 | dual_timestamp_get(&u->assert_timestamp); | |
49365733 | 1590 | u->assert_result = unit_condition_test_list(u, u->asserts, assert_type_to_string); |
59fccdc5 LP |
1591 | |
1592 | return u->assert_result; | |
1593 | } | |
1594 | ||
df446f96 LP |
1595 | void unit_status_printf(Unit *u, const char *status, const char *unit_status_msg_format) { |
1596 | DISABLE_WARNING_FORMAT_NONLITERAL; | |
1597 | manager_status_printf(u->manager, STATUS_TYPE_NORMAL, status, unit_status_msg_format, unit_description(u)); | |
1598 | REENABLE_WARNING; | |
1599 | } | |
1600 | ||
44a6b1b6 | 1601 | _pure_ static const char* unit_get_status_message_format(Unit *u, JobType t) { |
877d54e9 | 1602 | const char *format; |
a85ca902 | 1603 | const UnitStatusMessageFormats *format_table; |
877d54e9 LP |
1604 | |
1605 | assert(u); | |
df446f96 | 1606 | assert(IN_SET(t, JOB_START, JOB_STOP, JOB_RELOAD)); |
877d54e9 | 1607 | |
b5bf308b | 1608 | if (t != JOB_RELOAD) { |
a85ca902 MS |
1609 | format_table = &UNIT_VTABLE(u)->status_message_formats; |
1610 | if (format_table) { | |
1611 | format = format_table->starting_stopping[t == JOB_STOP]; | |
1612 | if (format) | |
1613 | return format; | |
1614 | } | |
1615 | } | |
877d54e9 LP |
1616 | |
1617 | /* Return generic strings */ | |
1618 | if (t == JOB_START) | |
1619 | return "Starting %s."; | |
1620 | else if (t == JOB_STOP) | |
1621 | return "Stopping %s."; | |
b5bf308b | 1622 | else |
877d54e9 | 1623 | return "Reloading %s."; |
877d54e9 LP |
1624 | } |
1625 | ||
1626 | static void unit_status_print_starting_stopping(Unit *u, JobType t) { | |
1627 | const char *format; | |
1628 | ||
1629 | assert(u); | |
1630 | ||
df446f96 LP |
1631 | /* Reload status messages have traditionally not been printed to console. */ |
1632 | if (!IN_SET(t, JOB_START, JOB_STOP)) | |
1633 | return; | |
1634 | ||
877d54e9 | 1635 | format = unit_get_status_message_format(u, t); |
c6918296 | 1636 | |
bcfce235 | 1637 | DISABLE_WARNING_FORMAT_NONLITERAL; |
49b1d377 | 1638 | unit_status_printf(u, "", format); |
bcfce235 | 1639 | REENABLE_WARNING; |
c6918296 MS |
1640 | } |
1641 | ||
877d54e9 | 1642 | static void unit_status_log_starting_stopping_reloading(Unit *u, JobType t) { |
2b044526 | 1643 | const char *format, *mid; |
877d54e9 | 1644 | char buf[LINE_MAX]; |
877d54e9 LP |
1645 | |
1646 | assert(u); | |
1647 | ||
df446f96 | 1648 | if (!IN_SET(t, JOB_START, JOB_STOP, JOB_RELOAD)) |
877d54e9 LP |
1649 | return; |
1650 | ||
81270860 LP |
1651 | if (log_on_console()) |
1652 | return; | |
1653 | ||
877d54e9 LP |
1654 | /* We log status messages for all units and all operations. */ |
1655 | ||
a85ca902 | 1656 | format = unit_get_status_message_format(u, t); |
877d54e9 | 1657 | |
bcfce235 | 1658 | DISABLE_WARNING_FORMAT_NONLITERAL; |
e68eedbb | 1659 | snprintf(buf, sizeof buf, format, unit_description(u)); |
bcfce235 | 1660 | REENABLE_WARNING; |
877d54e9 | 1661 | |
2b044526 ZJS |
1662 | mid = t == JOB_START ? "MESSAGE_ID=" SD_MESSAGE_UNIT_STARTING_STR : |
1663 | t == JOB_STOP ? "MESSAGE_ID=" SD_MESSAGE_UNIT_STOPPING_STR : | |
1664 | "MESSAGE_ID=" SD_MESSAGE_UNIT_RELOADING_STR; | |
877d54e9 | 1665 | |
f2341e0a LP |
1666 | /* Note that we deliberately use LOG_MESSAGE() instead of |
1667 | * LOG_UNIT_MESSAGE() here, since this is supposed to mimic | |
1668 | * closely what is written to screen using the status output, | |
1669 | * which is supposed the highest level, friendliest output | |
1670 | * possible, which means we should avoid the low-level unit | |
1671 | * name. */ | |
1672 | log_struct(LOG_INFO, | |
f2341e0a | 1673 | LOG_MESSAGE("%s", buf), |
ba360bb0 | 1674 | LOG_UNIT_ID(u), |
f1c50bec | 1675 | LOG_UNIT_INVOCATION_ID(u), |
ba360bb0 | 1676 | mid, |
f2341e0a | 1677 | NULL); |
877d54e9 | 1678 | } |
877d54e9 | 1679 | |
d1a34ae9 | 1680 | void unit_status_emit_starting_stopping_reloading(Unit *u, JobType t) { |
df446f96 LP |
1681 | assert(u); |
1682 | assert(t >= 0); | |
1683 | assert(t < _JOB_TYPE_MAX); | |
d1a34ae9 MS |
1684 | |
1685 | unit_status_log_starting_stopping_reloading(u, t); | |
df446f96 | 1686 | unit_status_print_starting_stopping(u, t); |
d1a34ae9 MS |
1687 | } |
1688 | ||
07299350 | 1689 | int unit_start_limit_test(Unit *u) { |
6bf0f408 LP |
1690 | assert(u); |
1691 | ||
1692 | if (ratelimit_test(&u->start_limit)) { | |
1693 | u->start_limit_hit = false; | |
1694 | return 0; | |
1695 | } | |
1696 | ||
1697 | log_unit_warning(u, "Start request repeated too quickly."); | |
1698 | u->start_limit_hit = true; | |
1699 | ||
87a47f99 | 1700 | return emergency_action(u->manager, u->start_limit_action, u->reboot_arg, "unit failed"); |
6bf0f408 LP |
1701 | } |
1702 | ||
c891efaf | 1703 | bool unit_shall_confirm_spawn(Unit *u) { |
631b676b | 1704 | assert(u); |
c891efaf FB |
1705 | |
1706 | if (manager_is_confirm_spawn_disabled(u->manager)) | |
1707 | return false; | |
1708 | ||
1709 | /* For some reasons units remaining in the same process group | |
1710 | * as PID 1 fail to acquire the console even if it's not used | |
1711 | * by any process. So skip the confirmation question for them. */ | |
1712 | return !unit_get_exec_context(u)->same_pgrp; | |
1713 | } | |
1714 | ||
631b676b LP |
1715 | static bool unit_verify_deps(Unit *u) { |
1716 | Unit *other; | |
1717 | Iterator j; | |
eef85c4a | 1718 | void *v; |
631b676b LP |
1719 | |
1720 | assert(u); | |
1721 | ||
1722 | /* Checks whether all BindsTo= dependencies of this unit are fulfilled — if they are also combined with | |
1723 | * After=. We do not check Requires= or Requisite= here as they only should have an effect on the job | |
1724 | * processing, but do not have any effect afterwards. We don't check BindsTo= dependencies that are not used in | |
1725 | * conjunction with After= as for them any such check would make things entirely racy. */ | |
1726 | ||
eef85c4a | 1727 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_BINDS_TO], j) { |
631b676b | 1728 | |
eef85c4a | 1729 | if (!hashmap_contains(u->dependencies[UNIT_AFTER], other)) |
631b676b LP |
1730 | continue; |
1731 | ||
1732 | if (!UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(other))) { | |
1733 | log_unit_notice(u, "Bound to unit %s, but unit isn't active.", other->id); | |
1734 | return false; | |
1735 | } | |
1736 | } | |
1737 | ||
1738 | return true; | |
1739 | } | |
1740 | ||
87f0e418 | 1741 | /* Errors: |
6bf0f408 LP |
1742 | * -EBADR: This unit type does not support starting. |
1743 | * -EALREADY: Unit is already started. | |
1744 | * -EAGAIN: An operation is already in progress. Retry later. | |
1745 | * -ECANCELED: Too many requests for now. | |
1746 | * -EPROTO: Assert failed | |
1747 | * -EINVAL: Unit not loaded | |
1748 | * -EOPNOTSUPP: Unit type not supported | |
631b676b | 1749 | * -ENOLINK: The necessary dependencies are not fulfilled. |
87f0e418 LP |
1750 | */ |
1751 | int unit_start(Unit *u) { | |
1752 | UnitActiveState state; | |
92ab323c | 1753 | Unit *following; |
87f0e418 LP |
1754 | |
1755 | assert(u); | |
1756 | ||
a82e5507 LP |
1757 | /* If this is already started, then this will succeed. Note |
1758 | * that this will even succeed if this unit is not startable | |
1759 | * by the user. This is relied on to detect when we need to | |
1760 | * wait for units and when waiting is finished. */ | |
87f0e418 LP |
1761 | state = unit_active_state(u); |
1762 | if (UNIT_IS_ACTIVE_OR_RELOADING(state)) | |
1763 | return -EALREADY; | |
1764 | ||
6bf0f408 LP |
1765 | /* Units that aren't loaded cannot be started */ |
1766 | if (u->load_state != UNIT_LOADED) | |
1767 | return -EINVAL; | |
1768 | ||
a82e5507 LP |
1769 | /* If the conditions failed, don't do anything at all. If we |
1770 | * already are activating this call might still be useful to | |
1771 | * speed up activation in case there is some hold-off time, | |
1772 | * but we don't want to recheck the condition in that case. */ | |
1773 | if (state != UNIT_ACTIVATING && | |
1774 | !unit_condition_test(u)) { | |
f2341e0a | 1775 | log_unit_debug(u, "Starting requested but condition failed. Not starting unit."); |
52661efd LP |
1776 | return -EALREADY; |
1777 | } | |
1778 | ||
59fccdc5 LP |
1779 | /* If the asserts failed, fail the entire job */ |
1780 | if (state != UNIT_ACTIVATING && | |
1781 | !unit_assert_test(u)) { | |
f2341e0a | 1782 | log_unit_notice(u, "Starting requested but asserts failed."); |
59fccdc5 LP |
1783 | return -EPROTO; |
1784 | } | |
1785 | ||
d11a7645 LP |
1786 | /* Units of types that aren't supported cannot be |
1787 | * started. Note that we do this test only after the condition | |
1788 | * checks, so that we rather return condition check errors | |
1789 | * (which are usually not considered a true failure) than "not | |
1790 | * supported" errors (which are considered a failure). | |
1791 | */ | |
1792 | if (!unit_supported(u)) | |
1793 | return -EOPNOTSUPP; | |
1794 | ||
631b676b LP |
1795 | /* Let's make sure that the deps really are in order before we start this. Normally the job engine should have |
1796 | * taken care of this already, but let's check this here again. After all, our dependencies might not be in | |
1797 | * effect anymore, due to a reload or due to a failed condition. */ | |
1798 | if (!unit_verify_deps(u)) | |
1799 | return -ENOLINK; | |
1800 | ||
92ab323c | 1801 | /* Forward to the main object, if we aren't it. */ |
52990c2e ZJS |
1802 | following = unit_following(u); |
1803 | if (following) { | |
f2341e0a | 1804 | log_unit_debug(u, "Redirecting start request from %s to %s.", u->id, following->id); |
92ab323c LP |
1805 | return unit_start(following); |
1806 | } | |
1807 | ||
1808 | /* If it is stopped, but we cannot start it, then fail */ | |
1809 | if (!UNIT_VTABLE(u)->start) | |
1810 | return -EBADR; | |
1811 | ||
87f0e418 LP |
1812 | /* We don't suppress calls to ->start() here when we are |
1813 | * already starting, to allow this request to be used as a | |
1814 | * "hurry up" call, for example when the unit is in some "auto | |
1815 | * restart" state where it waits for a holdoff timer to elapse | |
1816 | * before it will start again. */ | |
1817 | ||
c1e1601e | 1818 | unit_add_to_dbus_queue(u); |
9e58ff9c | 1819 | |
d1a34ae9 | 1820 | return UNIT_VTABLE(u)->start(u); |
87f0e418 LP |
1821 | } |
1822 | ||
1823 | bool unit_can_start(Unit *u) { | |
1824 | assert(u); | |
1825 | ||
8ff4d2ab LP |
1826 | if (u->load_state != UNIT_LOADED) |
1827 | return false; | |
1828 | ||
1829 | if (!unit_supported(u)) | |
1830 | return false; | |
1831 | ||
87f0e418 LP |
1832 | return !!UNIT_VTABLE(u)->start; |
1833 | } | |
1834 | ||
2528a7a6 LP |
1835 | bool unit_can_isolate(Unit *u) { |
1836 | assert(u); | |
1837 | ||
1838 | return unit_can_start(u) && | |
ac155bb8 | 1839 | u->allow_isolate; |
2528a7a6 LP |
1840 | } |
1841 | ||
87f0e418 LP |
1842 | /* Errors: |
1843 | * -EBADR: This unit type does not support stopping. | |
1844 | * -EALREADY: Unit is already stopped. | |
1845 | * -EAGAIN: An operation is already in progress. Retry later. | |
1846 | */ | |
1847 | int unit_stop(Unit *u) { | |
1848 | UnitActiveState state; | |
92ab323c | 1849 | Unit *following; |
87f0e418 LP |
1850 | |
1851 | assert(u); | |
1852 | ||
87f0e418 | 1853 | state = unit_active_state(u); |
fdf20a31 | 1854 | if (UNIT_IS_INACTIVE_OR_FAILED(state)) |
87f0e418 LP |
1855 | return -EALREADY; |
1856 | ||
0faacd47 LP |
1857 | following = unit_following(u); |
1858 | if (following) { | |
f2341e0a | 1859 | log_unit_debug(u, "Redirecting stop request from %s to %s.", u->id, following->id); |
92ab323c LP |
1860 | return unit_stop(following); |
1861 | } | |
1862 | ||
7898b0cf LP |
1863 | if (!UNIT_VTABLE(u)->stop) |
1864 | return -EBADR; | |
1865 | ||
c1e1601e | 1866 | unit_add_to_dbus_queue(u); |
9e58ff9c | 1867 | |
d1a34ae9 | 1868 | return UNIT_VTABLE(u)->stop(u); |
87f0e418 LP |
1869 | } |
1870 | ||
f5869324 LP |
1871 | bool unit_can_stop(Unit *u) { |
1872 | assert(u); | |
1873 | ||
1874 | if (!unit_supported(u)) | |
1875 | return false; | |
1876 | ||
1877 | if (u->perpetual) | |
1878 | return false; | |
1879 | ||
1880 | return !!UNIT_VTABLE(u)->stop; | |
1881 | } | |
1882 | ||
87f0e418 LP |
1883 | /* Errors: |
1884 | * -EBADR: This unit type does not support reloading. | |
1885 | * -ENOEXEC: Unit is not started. | |
1886 | * -EAGAIN: An operation is already in progress. Retry later. | |
1887 | */ | |
1888 | int unit_reload(Unit *u) { | |
1889 | UnitActiveState state; | |
92ab323c | 1890 | Unit *following; |
87f0e418 LP |
1891 | |
1892 | assert(u); | |
1893 | ||
ac155bb8 | 1894 | if (u->load_state != UNIT_LOADED) |
6124958c LP |
1895 | return -EINVAL; |
1896 | ||
87f0e418 LP |
1897 | if (!unit_can_reload(u)) |
1898 | return -EBADR; | |
1899 | ||
1900 | state = unit_active_state(u); | |
e364ad06 | 1901 | if (state == UNIT_RELOADING) |
87f0e418 LP |
1902 | return -EALREADY; |
1903 | ||
6a371e23 | 1904 | if (state != UNIT_ACTIVE) { |
f2341e0a | 1905 | log_unit_warning(u, "Unit cannot be reloaded because it is inactive."); |
87f0e418 | 1906 | return -ENOEXEC; |
6a371e23 | 1907 | } |
87f0e418 | 1908 | |
e48614c4 ZJS |
1909 | following = unit_following(u); |
1910 | if (following) { | |
f2341e0a | 1911 | log_unit_debug(u, "Redirecting reload request from %s to %s.", u->id, following->id); |
92ab323c LP |
1912 | return unit_reload(following); |
1913 | } | |
1914 | ||
c1e1601e | 1915 | unit_add_to_dbus_queue(u); |
82a2b6bb | 1916 | |
f54bcca5 JR |
1917 | if (!UNIT_VTABLE(u)->reload) { |
1918 | /* Unit doesn't have a reload function, but we need to propagate the reload anyway */ | |
1919 | unit_notify(u, unit_active_state(u), unit_active_state(u), true); | |
1920 | return 0; | |
1921 | } | |
1922 | ||
d1a34ae9 | 1923 | return UNIT_VTABLE(u)->reload(u); |
87f0e418 LP |
1924 | } |
1925 | ||
1926 | bool unit_can_reload(Unit *u) { | |
1927 | assert(u); | |
1928 | ||
f54bcca5 JR |
1929 | if (UNIT_VTABLE(u)->can_reload) |
1930 | return UNIT_VTABLE(u)->can_reload(u); | |
87f0e418 | 1931 | |
eef85c4a | 1932 | if (!hashmap_isempty(u->dependencies[UNIT_PROPAGATES_RELOAD_TO])) |
87f0e418 LP |
1933 | return true; |
1934 | ||
f54bcca5 | 1935 | return UNIT_VTABLE(u)->reload; |
87f0e418 LP |
1936 | } |
1937 | ||
b4a16b7b | 1938 | static void unit_check_unneeded(Unit *u) { |
be7d9ff7 | 1939 | |
4afd3348 | 1940 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
4bd29fe5 | 1941 | |
be7d9ff7 LP |
1942 | static const UnitDependency needed_dependencies[] = { |
1943 | UNIT_REQUIRED_BY, | |
084918ba | 1944 | UNIT_REQUISITE_OF, |
be7d9ff7 LP |
1945 | UNIT_WANTED_BY, |
1946 | UNIT_BOUND_BY, | |
1947 | }; | |
1948 | ||
be7d9ff7 LP |
1949 | unsigned j; |
1950 | int r; | |
f3bff0eb LP |
1951 | |
1952 | assert(u); | |
1953 | ||
1954 | /* If this service shall be shut down when unneeded then do | |
1955 | * so. */ | |
1956 | ||
ac155bb8 | 1957 | if (!u->stop_when_unneeded) |
f3bff0eb LP |
1958 | return; |
1959 | ||
1960 | if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) | |
1961 | return; | |
1962 | ||
eef85c4a LP |
1963 | for (j = 0; j < ELEMENTSOF(needed_dependencies); j++) { |
1964 | Unit *other; | |
1965 | Iterator i; | |
1966 | void *v; | |
1967 | ||
1968 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[needed_dependencies[j]], i) | |
be7d9ff7 LP |
1969 | if (unit_active_or_pending(other)) |
1970 | return; | |
eef85c4a | 1971 | } |
b81884e7 | 1972 | |
595bfe7d | 1973 | /* If stopping a unit fails continuously we might enter a stop |
bea355da LP |
1974 | * loop here, hence stop acting on the service being |
1975 | * unnecessary after a while. */ | |
67bfdc97 | 1976 | if (!ratelimit_test(&u->auto_stop_ratelimit)) { |
bea355da LP |
1977 | log_unit_warning(u, "Unit not needed anymore, but not stopping since we tried this too often recently."); |
1978 | return; | |
1979 | } | |
1980 | ||
f2341e0a | 1981 | log_unit_info(u, "Unit not needed anymore. Stopping."); |
f3bff0eb LP |
1982 | |
1983 | /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */ | |
4bd29fe5 | 1984 | r = manager_add_job(u->manager, JOB_STOP, u, JOB_FAIL, &error, NULL); |
be7d9ff7 | 1985 | if (r < 0) |
4bd29fe5 | 1986 | log_unit_warning_errno(u, r, "Failed to enqueue stop job, ignoring: %s", bus_error_message(&error, r)); |
f3bff0eb LP |
1987 | } |
1988 | ||
ff502445 | 1989 | static void unit_check_binds_to(Unit *u) { |
4afd3348 | 1990 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
ff502445 LP |
1991 | bool stop = false; |
1992 | Unit *other; | |
1993 | Iterator i; | |
eef85c4a | 1994 | void *v; |
67bfdc97 | 1995 | int r; |
ff502445 LP |
1996 | |
1997 | assert(u); | |
1998 | ||
1999 | if (u->job) | |
2000 | return; | |
2001 | ||
2002 | if (unit_active_state(u) != UNIT_ACTIVE) | |
2003 | return; | |
2004 | ||
eef85c4a | 2005 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_BINDS_TO], i) { |
ff502445 LP |
2006 | if (other->job) |
2007 | continue; | |
13ddc3fc ZJS |
2008 | |
2009 | if (!other->coldplugged) | |
2010 | /* We might yet create a job for the other unit… */ | |
2011 | continue; | |
ff502445 LP |
2012 | |
2013 | if (!UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other))) | |
2014 | continue; | |
2015 | ||
2016 | stop = true; | |
98f738b6 | 2017 | break; |
ff502445 LP |
2018 | } |
2019 | ||
2020 | if (!stop) | |
2021 | return; | |
2022 | ||
595bfe7d | 2023 | /* If stopping a unit fails continuously we might enter a stop |
67bfdc97 LP |
2024 | * loop here, hence stop acting on the service being |
2025 | * unnecessary after a while. */ | |
2026 | if (!ratelimit_test(&u->auto_stop_ratelimit)) { | |
2027 | log_unit_warning(u, "Unit is bound to inactive unit %s, but not stopping since we tried this too often recently.", other->id); | |
2028 | return; | |
2029 | } | |
2030 | ||
98f738b6 | 2031 | assert(other); |
f2341e0a | 2032 | log_unit_info(u, "Unit is bound to inactive unit %s. Stopping, too.", other->id); |
ff502445 LP |
2033 | |
2034 | /* A unit we need to run is gone. Sniff. Let's stop this. */ | |
4bd29fe5 | 2035 | r = manager_add_job(u->manager, JOB_STOP, u, JOB_FAIL, &error, NULL); |
67bfdc97 | 2036 | if (r < 0) |
4bd29fe5 | 2037 | log_unit_warning_errno(u, r, "Failed to enqueue stop job, ignoring: %s", bus_error_message(&error, r)); |
ff502445 LP |
2038 | } |
2039 | ||
87f0e418 LP |
2040 | static void retroactively_start_dependencies(Unit *u) { |
2041 | Iterator i; | |
2042 | Unit *other; | |
eef85c4a | 2043 | void *v; |
87f0e418 LP |
2044 | |
2045 | assert(u); | |
2046 | assert(UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))); | |
2047 | ||
eef85c4a LP |
2048 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_REQUIRES], i) |
2049 | if (!hashmap_get(u->dependencies[UNIT_AFTER], other) && | |
b81884e7 | 2050 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
4bd29fe5 | 2051 | manager_add_job(u->manager, JOB_START, other, JOB_REPLACE, NULL, NULL); |
b81884e7 | 2052 | |
eef85c4a LP |
2053 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_BINDS_TO], i) |
2054 | if (!hashmap_get(u->dependencies[UNIT_AFTER], other) && | |
b81884e7 | 2055 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
4bd29fe5 | 2056 | manager_add_job(u->manager, JOB_START, other, JOB_REPLACE, NULL, NULL); |
87f0e418 | 2057 | |
eef85c4a LP |
2058 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_WANTS], i) |
2059 | if (!hashmap_get(u->dependencies[UNIT_AFTER], other) && | |
b81884e7 | 2060 | !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) |
4bd29fe5 | 2061 | manager_add_job(u->manager, JOB_START, other, JOB_FAIL, NULL, NULL); |
87f0e418 | 2062 | |
eef85c4a | 2063 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_CONFLICTS], 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); |
69dd2852 | 2066 | |
eef85c4a | 2067 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_CONFLICTED_BY], i) |
b81884e7 | 2068 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
4bd29fe5 | 2069 | manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, NULL, NULL); |
87f0e418 LP |
2070 | } |
2071 | ||
2072 | static void retroactively_stop_dependencies(Unit *u) { | |
87f0e418 | 2073 | Unit *other; |
eef85c4a LP |
2074 | Iterator i; |
2075 | void *v; | |
87f0e418 LP |
2076 | |
2077 | assert(u); | |
2078 | assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))); | |
2079 | ||
b81884e7 | 2080 | /* Pull down units which are bound to us recursively if enabled */ |
eef85c4a | 2081 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_BOUND_BY], i) |
b81884e7 | 2082 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
4bd29fe5 | 2083 | manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, NULL, NULL); |
cd0504d0 MS |
2084 | } |
2085 | ||
2086 | static void check_unneeded_dependencies(Unit *u) { | |
cd0504d0 | 2087 | Unit *other; |
eef85c4a LP |
2088 | Iterator i; |
2089 | void *v; | |
cd0504d0 MS |
2090 | |
2091 | assert(u); | |
2092 | assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))); | |
f3bff0eb LP |
2093 | |
2094 | /* Garbage collect services that might not be needed anymore, if enabled */ | |
eef85c4a | 2095 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_REQUIRES], i) |
87f0e418 | 2096 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 2097 | unit_check_unneeded(other); |
eef85c4a | 2098 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_WANTS], i) |
f3bff0eb | 2099 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 2100 | unit_check_unneeded(other); |
eef85c4a | 2101 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_REQUISITE], i) |
f3bff0eb | 2102 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
b4a16b7b | 2103 | unit_check_unneeded(other); |
eef85c4a | 2104 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_BINDS_TO], i) |
b81884e7 LP |
2105 | if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) |
2106 | unit_check_unneeded(other); | |
87f0e418 LP |
2107 | } |
2108 | ||
3ecaa09b | 2109 | void unit_start_on_failure(Unit *u) { |
c0daa706 LP |
2110 | Unit *other; |
2111 | Iterator i; | |
eef85c4a | 2112 | void *v; |
c0daa706 LP |
2113 | |
2114 | assert(u); | |
2115 | ||
eef85c4a | 2116 | if (hashmap_size(u->dependencies[UNIT_ON_FAILURE]) <= 0) |
222ae6a8 LP |
2117 | return; |
2118 | ||
f2341e0a | 2119 | log_unit_info(u, "Triggering OnFailure= dependencies."); |
222ae6a8 | 2120 | |
eef85c4a | 2121 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_ON_FAILURE], i) { |
222ae6a8 LP |
2122 | int r; |
2123 | ||
4bd29fe5 | 2124 | r = manager_add_job(u->manager, JOB_START, other, u->on_failure_job_mode, NULL, NULL); |
c1b6628d | 2125 | if (r < 0) |
f2341e0a | 2126 | log_unit_error_errno(u, r, "Failed to enqueue OnFailure= job: %m"); |
222ae6a8 | 2127 | } |
c0daa706 LP |
2128 | } |
2129 | ||
3ecaa09b LP |
2130 | void unit_trigger_notify(Unit *u) { |
2131 | Unit *other; | |
2132 | Iterator i; | |
eef85c4a | 2133 | void *v; |
3ecaa09b LP |
2134 | |
2135 | assert(u); | |
2136 | ||
eef85c4a | 2137 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_TRIGGERED_BY], i) |
3ecaa09b LP |
2138 | if (UNIT_VTABLE(other)->trigger_notify) |
2139 | UNIT_VTABLE(other)->trigger_notify(other, u); | |
2140 | } | |
2141 | ||
915b1d01 LP |
2142 | static int unit_log_resources(Unit *u) { |
2143 | ||
2144 | struct iovec iovec[1 + _CGROUP_IP_ACCOUNTING_METRIC_MAX + 4]; | |
2145 | size_t n_message_parts = 0, n_iovec = 0; | |
2146 | char* message_parts[3 + 1], *t; | |
2147 | nsec_t nsec = NSEC_INFINITY; | |
2148 | CGroupIPAccountingMetric m; | |
2149 | size_t i; | |
2150 | int r; | |
2151 | const char* const ip_fields[_CGROUP_IP_ACCOUNTING_METRIC_MAX] = { | |
2152 | [CGROUP_IP_INGRESS_BYTES] = "IP_METRIC_INGRESS_BYTES", | |
2153 | [CGROUP_IP_INGRESS_PACKETS] = "IP_METRIC_INGRESS_PACKETS", | |
2154 | [CGROUP_IP_EGRESS_BYTES] = "IP_METRIC_EGRESS_BYTES", | |
2155 | [CGROUP_IP_EGRESS_PACKETS] = "IP_METRIC_EGRESS_PACKETS", | |
2156 | }; | |
2157 | ||
2158 | assert(u); | |
2159 | ||
2160 | /* Invoked whenever a unit enters failed or dead state. Logs information about consumed resources if resource | |
2161 | * accounting was enabled for a unit. It does this in two ways: a friendly human readable string with reduced | |
2162 | * information and the complete data in structured fields. */ | |
2163 | ||
2164 | (void) unit_get_cpu_usage(u, &nsec); | |
2165 | if (nsec != NSEC_INFINITY) { | |
2166 | char buf[FORMAT_TIMESPAN_MAX] = ""; | |
2167 | ||
2168 | /* Format the CPU time for inclusion in the structured log message */ | |
2169 | if (asprintf(&t, "CPU_USAGE_NSEC=%" PRIu64, nsec) < 0) { | |
2170 | r = log_oom(); | |
2171 | goto finish; | |
2172 | } | |
2173 | iovec[n_iovec++] = IOVEC_MAKE_STRING(t); | |
2174 | ||
2175 | /* Format the CPU time for inclusion in the human language message string */ | |
2176 | format_timespan(buf, sizeof(buf), nsec / NSEC_PER_USEC, USEC_PER_MSEC); | |
2177 | t = strjoin(n_message_parts > 0 ? "consumed " : "Consumed ", buf, " CPU time"); | |
2178 | if (!t) { | |
2179 | r = log_oom(); | |
2180 | goto finish; | |
2181 | } | |
2182 | ||
2183 | message_parts[n_message_parts++] = t; | |
2184 | } | |
2185 | ||
2186 | for (m = 0; m < _CGROUP_IP_ACCOUNTING_METRIC_MAX; m++) { | |
2187 | char buf[FORMAT_BYTES_MAX] = ""; | |
2188 | uint64_t value = UINT64_MAX; | |
2189 | ||
2190 | assert(ip_fields[m]); | |
2191 | ||
2192 | (void) unit_get_ip_accounting(u, m, &value); | |
2193 | if (value == UINT64_MAX) | |
2194 | continue; | |
2195 | ||
2196 | /* Format IP accounting data for inclusion in the structured log message */ | |
2197 | if (asprintf(&t, "%s=%" PRIu64, ip_fields[m], value) < 0) { | |
2198 | r = log_oom(); | |
2199 | goto finish; | |
2200 | } | |
2201 | iovec[n_iovec++] = IOVEC_MAKE_STRING(t); | |
2202 | ||
2203 | /* Format the IP accounting data for inclusion in the human language message string, but only for the | |
2204 | * bytes counters (and not for the packets counters) */ | |
2205 | if (m == CGROUP_IP_INGRESS_BYTES) | |
2206 | t = strjoin(n_message_parts > 0 ? "received " : "Received ", | |
2207 | format_bytes(buf, sizeof(buf), value), | |
2208 | " IP traffic"); | |
2209 | else if (m == CGROUP_IP_EGRESS_BYTES) | |
2210 | t = strjoin(n_message_parts > 0 ? "sent " : "Sent ", | |
2211 | format_bytes(buf, sizeof(buf), value), | |
2212 | " IP traffic"); | |
2213 | else | |
2214 | continue; | |
2215 | if (!t) { | |
2216 | r = log_oom(); | |
2217 | goto finish; | |
2218 | } | |
2219 | ||
2220 | message_parts[n_message_parts++] = t; | |
2221 | } | |
2222 | ||
2223 | /* Is there any accounting data available at all? */ | |
2224 | if (n_iovec == 0) { | |
2225 | r = 0; | |
2226 | goto finish; | |
2227 | } | |
2228 | ||
2229 | if (n_message_parts == 0) | |
2230 | t = strjoina("MESSAGE=", u->id, ": Completed"); | |
2231 | else { | |
2232 | _cleanup_free_ char *joined; | |
2233 | ||
2234 | message_parts[n_message_parts] = NULL; | |
2235 | ||
2236 | joined = strv_join(message_parts, ", "); | |
2237 | if (!joined) { | |
2238 | r = log_oom(); | |
2239 | goto finish; | |
2240 | } | |
2241 | ||
2242 | t = strjoina("MESSAGE=", u->id, ": ", joined); | |
2243 | } | |
2244 | ||
2245 | /* The following four fields we allocate on the stack or are static strings, we hence don't want to free them, | |
2246 | * and hence don't increase n_iovec for them */ | |
2247 | iovec[n_iovec] = IOVEC_MAKE_STRING(t); | |
2248 | iovec[n_iovec + 1] = IOVEC_MAKE_STRING("MESSAGE_ID=" SD_MESSAGE_UNIT_RESOURCES_STR); | |
2249 | ||
2250 | t = strjoina(u->manager->unit_log_field, u->id); | |
2251 | iovec[n_iovec + 2] = IOVEC_MAKE_STRING(t); | |
2252 | ||
2253 | t = strjoina(u->manager->invocation_log_field, u->invocation_id_string); | |
2254 | iovec[n_iovec + 3] = IOVEC_MAKE_STRING(t); | |
2255 | ||
2256 | log_struct_iovec(LOG_INFO, iovec, n_iovec + 4); | |
2257 | r = 0; | |
2258 | ||
2259 | finish: | |
2260 | for (i = 0; i < n_message_parts; i++) | |
2261 | free(message_parts[i]); | |
2262 | ||
2263 | for (i = 0; i < n_iovec; i++) | |
2264 | free(iovec[i].iov_base); | |
2265 | ||
2266 | return r; | |
2267 | ||
2268 | } | |
2269 | ||
e2f3b44c | 2270 | void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_success) { |
546ac4f0 | 2271 | Manager *m; |
7e6e7b06 | 2272 | bool unexpected; |
a096ed36 | 2273 | |
87f0e418 LP |
2274 | assert(u); |
2275 | assert(os < _UNIT_ACTIVE_STATE_MAX); | |
2276 | assert(ns < _UNIT_ACTIVE_STATE_MAX); | |
87f0e418 | 2277 | |
8e471ccd LP |
2278 | /* Note that this is called for all low-level state changes, |
2279 | * even if they might map to the same high-level | |
865cc19a | 2280 | * UnitActiveState! That means that ns == os is an expected |
c5315881 | 2281 | * behavior here. For example: if a mount point is remounted |
cd6d0a45 | 2282 | * this function will be called too! */ |
87f0e418 | 2283 | |
546ac4f0 MS |
2284 | m = u->manager; |
2285 | ||
f755e3b7 | 2286 | /* Update timestamps for state changes */ |
2c289ea8 | 2287 | if (!MANAGER_IS_RELOADING(m)) { |
a483fb59 | 2288 | dual_timestamp_get(&u->state_change_timestamp); |
173e3821 | 2289 | |
bdbf9951 | 2290 | if (UNIT_IS_INACTIVE_OR_FAILED(os) && !UNIT_IS_INACTIVE_OR_FAILED(ns)) |
a483fb59 | 2291 | u->inactive_exit_timestamp = u->state_change_timestamp; |
bdbf9951 | 2292 | else if (!UNIT_IS_INACTIVE_OR_FAILED(os) && UNIT_IS_INACTIVE_OR_FAILED(ns)) |
a483fb59 | 2293 | u->inactive_enter_timestamp = u->state_change_timestamp; |
bdbf9951 LP |
2294 | |
2295 | if (!UNIT_IS_ACTIVE_OR_RELOADING(os) && UNIT_IS_ACTIVE_OR_RELOADING(ns)) | |
a483fb59 | 2296 | u->active_enter_timestamp = u->state_change_timestamp; |
bdbf9951 | 2297 | else if (UNIT_IS_ACTIVE_OR_RELOADING(os) && !UNIT_IS_ACTIVE_OR_RELOADING(ns)) |
a483fb59 | 2298 | u->active_exit_timestamp = u->state_change_timestamp; |
bdbf9951 | 2299 | } |
87f0e418 | 2300 | |
865cc19a | 2301 | /* Keep track of failed units */ |
5269eb6b | 2302 | (void) manager_update_failed_units(u->manager, u, ns == UNIT_FAILED); |
f755e3b7 | 2303 | |
d3070fbd LP |
2304 | /* Make sure the cgroup and state files are always removed when we become inactive */ |
2305 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) { | |
efdb0237 | 2306 | unit_prune_cgroup(u); |
d3070fbd LP |
2307 | unit_unlink_state_files(u); |
2308 | } | |
fb385181 | 2309 | |
9cd86184 | 2310 | /* Note that this doesn't apply to RemainAfterExit services exiting |
6f285378 | 2311 | * successfully, since there's no change of state in that case. Which is |
9cd86184 | 2312 | * why it is handled in service_set_state() */ |
7ed9f6cd | 2313 | if (UNIT_IS_INACTIVE_OR_FAILED(os) != UNIT_IS_INACTIVE_OR_FAILED(ns)) { |
b33918c2 LP |
2314 | ExecContext *ec; |
2315 | ||
2316 | ec = unit_get_exec_context(u); | |
7ed9f6cd | 2317 | if (ec && exec_context_may_touch_console(ec)) { |
31a7eb86 | 2318 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) { |
313cefa1 | 2319 | m->n_on_console--; |
31a7eb86 ZJS |
2320 | |
2321 | if (m->n_on_console == 0) | |
2322 | /* unset no_console_output flag, since the console is free */ | |
2f38577f | 2323 | m->no_console_output = false; |
31a7eb86 | 2324 | } else |
313cefa1 | 2325 | m->n_on_console++; |
7ed9f6cd MS |
2326 | } |
2327 | } | |
2328 | ||
ac155bb8 | 2329 | if (u->job) { |
7e6e7b06 | 2330 | unexpected = false; |
87f0e418 | 2331 | |
ac155bb8 | 2332 | if (u->job->state == JOB_WAITING) |
87f0e418 LP |
2333 | |
2334 | /* So we reached a different state for this | |
2335 | * job. Let's see if we can run it now if it | |
2336 | * failed previously due to EAGAIN. */ | |
ac155bb8 | 2337 | job_add_to_run_queue(u->job); |
87f0e418 | 2338 | |
b410e6b9 | 2339 | /* Let's check whether this state change constitutes a |
35b8ca3a | 2340 | * finished job, or maybe contradicts a running job and |
b410e6b9 | 2341 | * hence needs to invalidate jobs. */ |
87f0e418 | 2342 | |
ac155bb8 | 2343 | switch (u->job->type) { |
87f0e418 | 2344 | |
b410e6b9 LP |
2345 | case JOB_START: |
2346 | case JOB_VERIFY_ACTIVE: | |
87f0e418 | 2347 | |
b410e6b9 | 2348 | if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) |
833f92ad | 2349 | job_finish_and_invalidate(u->job, JOB_DONE, true, false); |
ac155bb8 | 2350 | else if (u->job->state == JOB_RUNNING && ns != UNIT_ACTIVATING) { |
b410e6b9 | 2351 | unexpected = true; |
41b02ec7 | 2352 | |
fdf20a31 | 2353 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
833f92ad | 2354 | job_finish_and_invalidate(u->job, ns == UNIT_FAILED ? JOB_FAILED : JOB_DONE, true, false); |
b410e6b9 | 2355 | } |
87f0e418 | 2356 | |
b410e6b9 | 2357 | break; |
87f0e418 | 2358 | |
b410e6b9 LP |
2359 | case JOB_RELOAD: |
2360 | case JOB_RELOAD_OR_START: | |
3282591d | 2361 | case JOB_TRY_RELOAD: |
87f0e418 | 2362 | |
ac155bb8 | 2363 | if (u->job->state == JOB_RUNNING) { |
a096ed36 | 2364 | if (ns == UNIT_ACTIVE) |
833f92ad | 2365 | job_finish_and_invalidate(u->job, reload_success ? JOB_DONE : JOB_FAILED, true, false); |
ec2ce0c5 | 2366 | else if (!IN_SET(ns, UNIT_ACTIVATING, UNIT_RELOADING)) { |
a096ed36 | 2367 | unexpected = true; |
41b02ec7 | 2368 | |
fdf20a31 | 2369 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
833f92ad | 2370 | job_finish_and_invalidate(u->job, ns == UNIT_FAILED ? JOB_FAILED : JOB_DONE, true, false); |
a096ed36 | 2371 | } |
b410e6b9 | 2372 | } |
87f0e418 | 2373 | |
b410e6b9 | 2374 | break; |
87f0e418 | 2375 | |
b410e6b9 LP |
2376 | case JOB_STOP: |
2377 | case JOB_RESTART: | |
2378 | case JOB_TRY_RESTART: | |
87f0e418 | 2379 | |
fdf20a31 | 2380 | if (UNIT_IS_INACTIVE_OR_FAILED(ns)) |
833f92ad | 2381 | job_finish_and_invalidate(u->job, JOB_DONE, true, false); |
ac155bb8 | 2382 | else if (u->job->state == JOB_RUNNING && ns != UNIT_DEACTIVATING) { |
b410e6b9 | 2383 | unexpected = true; |
833f92ad | 2384 | job_finish_and_invalidate(u->job, JOB_FAILED, true, false); |
b410e6b9 | 2385 | } |
87f0e418 | 2386 | |
b410e6b9 | 2387 | break; |
87f0e418 | 2388 | |
b410e6b9 LP |
2389 | default: |
2390 | assert_not_reached("Job type unknown"); | |
87f0e418 | 2391 | } |
87f0e418 | 2392 | |
7e6e7b06 LP |
2393 | } else |
2394 | unexpected = true; | |
2395 | ||
2c289ea8 | 2396 | if (!MANAGER_IS_RELOADING(m)) { |
f3bff0eb | 2397 | |
bdbf9951 LP |
2398 | /* If this state change happened without being |
2399 | * requested by a job, then let's retroactively start | |
2400 | * or stop dependencies. We skip that step when | |
2401 | * deserializing, since we don't want to create any | |
2402 | * additional jobs just because something is already | |
2403 | * activated. */ | |
2404 | ||
2405 | if (unexpected) { | |
2406 | if (UNIT_IS_INACTIVE_OR_FAILED(os) && UNIT_IS_ACTIVE_OR_ACTIVATING(ns)) | |
2407 | retroactively_start_dependencies(u); | |
2408 | else if (UNIT_IS_ACTIVE_OR_ACTIVATING(os) && UNIT_IS_INACTIVE_OR_DEACTIVATING(ns)) | |
2409 | retroactively_stop_dependencies(u); | |
2410 | } | |
5de9682c | 2411 | |
cd0504d0 | 2412 | /* stop unneeded units regardless if going down was expected or not */ |
b33918c2 | 2413 | if (UNIT_IS_INACTIVE_OR_DEACTIVATING(ns)) |
cd0504d0 MS |
2414 | check_unneeded_dependencies(u); |
2415 | ||
bdbf9951 | 2416 | if (ns != os && ns == UNIT_FAILED) { |
ed77d407 | 2417 | log_unit_debug(u, "Unit entered failed state."); |
3ecaa09b | 2418 | unit_start_on_failure(u); |
cd6d0a45 | 2419 | } |
3b2775c5 | 2420 | } |
e537352b | 2421 | |
3b2775c5 LP |
2422 | /* Some names are special */ |
2423 | if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) { | |
2424 | ||
2425 | if (unit_has_name(u, SPECIAL_DBUS_SERVICE)) | |
865cc19a | 2426 | /* The bus might have just become available, |
3b2775c5 LP |
2427 | * hence try to connect to it, if we aren't |
2428 | * yet connected. */ | |
546ac4f0 | 2429 | bus_init(m, true); |
3b2775c5 | 2430 | |
ac155bb8 | 2431 | if (u->type == UNIT_SERVICE && |
3b2775c5 | 2432 | !UNIT_IS_ACTIVE_OR_RELOADING(os) && |
2c289ea8 | 2433 | !MANAGER_IS_RELOADING(m)) { |
3b2775c5 | 2434 | /* Write audit record if we have just finished starting up */ |
546ac4f0 | 2435 | manager_send_unit_audit(m, u, AUDIT_SERVICE_START, true); |
ac155bb8 | 2436 | u->in_audit = true; |
3b2775c5 | 2437 | } |
e983b760 | 2438 | |
3b2775c5 | 2439 | if (!UNIT_IS_ACTIVE_OR_RELOADING(os)) |
546ac4f0 | 2440 | manager_send_unit_plymouth(m, u); |
bdbf9951 | 2441 | |
3b2775c5 | 2442 | } else { |
915b1d01 LP |
2443 | /* We don't care about D-Bus going down here, since we'll get an asynchronous notification for it |
2444 | * anyway. */ | |
bdbf9951 | 2445 | |
915b1d01 LP |
2446 | if (UNIT_IS_INACTIVE_OR_FAILED(ns) && |
2447 | !UNIT_IS_INACTIVE_OR_FAILED(os) | |
2448 | && !MANAGER_IS_RELOADING(m)) { | |
cd6d0a45 | 2449 | |
915b1d01 LP |
2450 | /* This unit just stopped/failed. */ |
2451 | if (u->type == UNIT_SERVICE) { | |
4927fcae | 2452 | |
915b1d01 LP |
2453 | /* Hmm, if there was no start record written |
2454 | * write it now, so that we always have a nice | |
2455 | * pair */ | |
2456 | if (!u->in_audit) { | |
2457 | manager_send_unit_audit(m, u, AUDIT_SERVICE_START, ns == UNIT_INACTIVE); | |
cd6d0a45 | 2458 | |
915b1d01 LP |
2459 | if (ns == UNIT_INACTIVE) |
2460 | manager_send_unit_audit(m, u, AUDIT_SERVICE_STOP, true); | |
2461 | } else | |
2462 | /* Write audit record if we have just finished shutting down */ | |
2463 | manager_send_unit_audit(m, u, AUDIT_SERVICE_STOP, ns == UNIT_INACTIVE); | |
2464 | ||
2465 | u->in_audit = false; | |
2466 | } | |
bdbf9951 | 2467 | |
915b1d01 LP |
2468 | /* Write a log message about consumed resources */ |
2469 | unit_log_resources(u); | |
cd6d0a45 | 2470 | } |
f278026d LP |
2471 | } |
2472 | ||
546ac4f0 | 2473 | manager_recheck_journal(m); |
3ecaa09b | 2474 | unit_trigger_notify(u); |
3b2775c5 | 2475 | |
2c289ea8 | 2476 | if (!MANAGER_IS_RELOADING(u->manager)) { |
ff502445 LP |
2477 | /* Maybe we finished startup and are now ready for |
2478 | * being stopped because unneeded? */ | |
bf6dcfa6 | 2479 | unit_check_unneeded(u); |
c1e1601e | 2480 | |
ff502445 LP |
2481 | /* Maybe we finished startup, but something we needed |
2482 | * has vanished? Let's die then. (This happens when | |
2483 | * something BindsTo= to a Type=oneshot unit, as these | |
2484 | * units go directly from starting to inactive, | |
2485 | * without ever entering started.) */ | |
2486 | unit_check_binds_to(u); | |
2487 | } | |
2488 | ||
c1e1601e | 2489 | unit_add_to_dbus_queue(u); |
701cc384 | 2490 | unit_add_to_gc_queue(u); |
87f0e418 LP |
2491 | } |
2492 | ||
87f0e418 | 2493 | int unit_watch_pid(Unit *u, pid_t pid) { |
a911bb9a LP |
2494 | int q, r; |
2495 | ||
87f0e418 LP |
2496 | assert(u); |
2497 | assert(pid >= 1); | |
2498 | ||
5ba6985b LP |
2499 | /* Watch a specific PID. We only support one or two units |
2500 | * watching each PID for now, not more. */ | |
2501 | ||
d5099efc | 2502 | r = set_ensure_allocated(&u->pids, NULL); |
5ba6985b LP |
2503 | if (r < 0) |
2504 | return r; | |
2505 | ||
d5099efc | 2506 | r = hashmap_ensure_allocated(&u->manager->watch_pids1, NULL); |
a911bb9a LP |
2507 | if (r < 0) |
2508 | return r; | |
2509 | ||
fea72cc0 | 2510 | r = hashmap_put(u->manager->watch_pids1, PID_TO_PTR(pid), u); |
5ba6985b | 2511 | if (r == -EEXIST) { |
d5099efc | 2512 | r = hashmap_ensure_allocated(&u->manager->watch_pids2, NULL); |
5ba6985b LP |
2513 | if (r < 0) |
2514 | return r; | |
05e343b7 | 2515 | |
fea72cc0 | 2516 | r = hashmap_put(u->manager->watch_pids2, PID_TO_PTR(pid), u); |
5ba6985b | 2517 | } |
a911bb9a | 2518 | |
fea72cc0 | 2519 | q = set_put(u->pids, PID_TO_PTR(pid)); |
a911bb9a LP |
2520 | if (q < 0) |
2521 | return q; | |
2522 | ||
2523 | return r; | |
87f0e418 LP |
2524 | } |
2525 | ||
2526 | void unit_unwatch_pid(Unit *u, pid_t pid) { | |
2527 | assert(u); | |
2528 | assert(pid >= 1); | |
2529 | ||
fea72cc0 LP |
2530 | (void) hashmap_remove_value(u->manager->watch_pids1, PID_TO_PTR(pid), u); |
2531 | (void) hashmap_remove_value(u->manager->watch_pids2, PID_TO_PTR(pid), u); | |
2532 | (void) set_remove(u->pids, PID_TO_PTR(pid)); | |
a911bb9a LP |
2533 | } |
2534 | ||
bd44e61b LP |
2535 | void unit_unwatch_all_pids(Unit *u) { |
2536 | assert(u); | |
2537 | ||
2538 | while (!set_isempty(u->pids)) | |
fea72cc0 | 2539 | unit_unwatch_pid(u, PTR_TO_PID(set_first(u->pids))); |
bd44e61b | 2540 | |
efdb0237 | 2541 | u->pids = set_free(u->pids); |
a911bb9a LP |
2542 | } |
2543 | ||
2544 | void unit_tidy_watch_pids(Unit *u, pid_t except1, pid_t except2) { | |
2545 | Iterator i; | |
2546 | void *e; | |
2547 | ||
2548 | assert(u); | |
2549 | ||
2550 | /* Cleans dead PIDs from our list */ | |
2551 | ||
2552 | SET_FOREACH(e, u->pids, i) { | |
fea72cc0 | 2553 | pid_t pid = PTR_TO_PID(e); |
a911bb9a LP |
2554 | |
2555 | if (pid == except1 || pid == except2) | |
2556 | continue; | |
2557 | ||
9f5650ae | 2558 | if (!pid_is_unwaited(pid)) |
bd44e61b | 2559 | unit_unwatch_pid(u, pid); |
a911bb9a | 2560 | } |
87f0e418 LP |
2561 | } |
2562 | ||
87f0e418 LP |
2563 | bool unit_job_is_applicable(Unit *u, JobType j) { |
2564 | assert(u); | |
2565 | assert(j >= 0 && j < _JOB_TYPE_MAX); | |
2566 | ||
2567 | switch (j) { | |
2568 | ||
2569 | case JOB_VERIFY_ACTIVE: | |
2570 | case JOB_START: | |
e0209d83 | 2571 | case JOB_NOP: |
f5869324 LP |
2572 | /* Note that we don't check unit_can_start() here. That's because .device units and suchlike are not |
2573 | * startable by us but may appear due to external events, and it thus makes sense to permit enqueing | |
2574 | * jobs for it. */ | |
87f0e418 LP |
2575 | return true; |
2576 | ||
f5869324 LP |
2577 | case JOB_STOP: |
2578 | /* Similar as above. However, perpetual units can never be stopped (neither explicitly nor due to | |
2579 | * external events), hence it makes no sense to permit enqueing such a request either. */ | |
2580 | return !u->perpetual; | |
2581 | ||
87f0e418 LP |
2582 | case JOB_RESTART: |
2583 | case JOB_TRY_RESTART: | |
f5869324 | 2584 | return unit_can_stop(u) && unit_can_start(u); |
87f0e418 LP |
2585 | |
2586 | case JOB_RELOAD: | |
3282591d | 2587 | case JOB_TRY_RELOAD: |
87f0e418 LP |
2588 | return unit_can_reload(u); |
2589 | ||
2590 | case JOB_RELOAD_OR_START: | |
2591 | return unit_can_reload(u) && unit_can_start(u); | |
2592 | ||
2593 | default: | |
2594 | assert_not_reached("Invalid job type"); | |
2595 | } | |
2596 | } | |
2597 | ||
f2341e0a LP |
2598 | static void maybe_warn_about_dependency(Unit *u, const char *other, UnitDependency dependency) { |
2599 | assert(u); | |
d1fab3fe | 2600 | |
f2341e0a LP |
2601 | /* Only warn about some unit types */ |
2602 | if (!IN_SET(dependency, UNIT_CONFLICTS, UNIT_CONFLICTED_BY, UNIT_BEFORE, UNIT_AFTER, UNIT_ON_FAILURE, UNIT_TRIGGERS, UNIT_TRIGGERED_BY)) | |
2603 | return; | |
3f3cc397 | 2604 | |
f2341e0a LP |
2605 | if (streq_ptr(u->id, other)) |
2606 | log_unit_warning(u, "Dependency %s=%s dropped", unit_dependency_to_string(dependency), u->id); | |
2607 | else | |
2608 | log_unit_warning(u, "Dependency %s=%s dropped, merged into %s", unit_dependency_to_string(dependency), strna(other), u->id); | |
d1fab3fe ZJS |
2609 | } |
2610 | ||
eef85c4a LP |
2611 | static int unit_add_dependency_hashmap( |
2612 | Hashmap **h, | |
2613 | Unit *other, | |
2614 | UnitDependencyMask origin_mask, | |
2615 | UnitDependencyMask destination_mask) { | |
2616 | ||
2617 | UnitDependencyInfo info; | |
2618 | int r; | |
2619 | ||
2620 | assert(h); | |
2621 | assert(other); | |
2622 | assert(origin_mask < _UNIT_DEPENDENCY_MASK_FULL); | |
2623 | assert(destination_mask < _UNIT_DEPENDENCY_MASK_FULL); | |
2624 | assert(origin_mask > 0 || destination_mask > 0); | |
2625 | ||
2626 | r = hashmap_ensure_allocated(h, NULL); | |
2627 | if (r < 0) | |
2628 | return r; | |
2629 | ||
2630 | assert_cc(sizeof(void*) == sizeof(info)); | |
2631 | ||
2632 | info.data = hashmap_get(*h, other); | |
2633 | if (info.data) { | |
2634 | /* Entry already exists. Add in our mask. */ | |
2635 | ||
2636 | if ((info.origin_mask & origin_mask) == info.origin_mask && | |
2637 | (info.destination_mask & destination_mask) == info.destination_mask) | |
2638 | return 0; /* NOP */ | |
2639 | ||
2640 | info.origin_mask |= origin_mask; | |
2641 | info.destination_mask |= destination_mask; | |
2642 | ||
2643 | r = hashmap_update(*h, other, info.data); | |
2644 | } else { | |
2645 | info = (UnitDependencyInfo) { | |
2646 | .origin_mask = origin_mask, | |
2647 | .destination_mask = destination_mask, | |
2648 | }; | |
2649 | ||
2650 | r = hashmap_put(*h, other, info.data); | |
2651 | } | |
2652 | if (r < 0) | |
2653 | return r; | |
2654 | ||
2655 | return 1; | |
2656 | } | |
2657 | ||
2658 | int unit_add_dependency( | |
2659 | Unit *u, | |
2660 | UnitDependency d, | |
2661 | Unit *other, | |
2662 | bool add_reference, | |
2663 | UnitDependencyMask mask) { | |
87f0e418 LP |
2664 | |
2665 | static const UnitDependency inverse_table[_UNIT_DEPENDENCY_MAX] = { | |
2666 | [UNIT_REQUIRES] = UNIT_REQUIRED_BY, | |
87f0e418 | 2667 | [UNIT_WANTS] = UNIT_WANTED_BY, |
be7d9ff7 | 2668 | [UNIT_REQUISITE] = UNIT_REQUISITE_OF, |
7f2cddae | 2669 | [UNIT_BINDS_TO] = UNIT_BOUND_BY, |
60649f17 | 2670 | [UNIT_PART_OF] = UNIT_CONSISTS_OF, |
be7d9ff7 | 2671 | [UNIT_REQUIRED_BY] = UNIT_REQUIRES, |
be7d9ff7 | 2672 | [UNIT_REQUISITE_OF] = UNIT_REQUISITE, |
be7d9ff7 | 2673 | [UNIT_WANTED_BY] = UNIT_WANTS, |
7f2cddae | 2674 | [UNIT_BOUND_BY] = UNIT_BINDS_TO, |
60649f17 | 2675 | [UNIT_CONSISTS_OF] = UNIT_PART_OF, |
69dd2852 LP |
2676 | [UNIT_CONFLICTS] = UNIT_CONFLICTED_BY, |
2677 | [UNIT_CONFLICTED_BY] = UNIT_CONFLICTS, | |
87f0e418 | 2678 | [UNIT_BEFORE] = UNIT_AFTER, |
701cc384 | 2679 | [UNIT_AFTER] = UNIT_BEFORE, |
5de9682c | 2680 | [UNIT_ON_FAILURE] = _UNIT_DEPENDENCY_INVALID, |
701cc384 | 2681 | [UNIT_REFERENCES] = UNIT_REFERENCED_BY, |
57020a3a LP |
2682 | [UNIT_REFERENCED_BY] = UNIT_REFERENCES, |
2683 | [UNIT_TRIGGERS] = UNIT_TRIGGERED_BY, | |
4dcc1cb4 | 2684 | [UNIT_TRIGGERED_BY] = UNIT_TRIGGERS, |
7f2cddae | 2685 | [UNIT_PROPAGATES_RELOAD_TO] = UNIT_RELOAD_PROPAGATED_FROM, |
85e9a101 | 2686 | [UNIT_RELOAD_PROPAGATED_FROM] = UNIT_PROPAGATES_RELOAD_TO, |
613b411c | 2687 | [UNIT_JOINS_NAMESPACE_OF] = UNIT_JOINS_NAMESPACE_OF, |
87f0e418 | 2688 | }; |
eef85c4a LP |
2689 | Unit *original_u = u, *original_other = other; |
2690 | int r; | |
87f0e418 LP |
2691 | |
2692 | assert(u); | |
2693 | assert(d >= 0 && d < _UNIT_DEPENDENCY_MAX); | |
87f0e418 LP |
2694 | assert(other); |
2695 | ||
9f151f29 LP |
2696 | u = unit_follow_merge(u); |
2697 | other = unit_follow_merge(other); | |
2698 | ||
87f0e418 LP |
2699 | /* We won't allow dependencies on ourselves. We will not |
2700 | * consider them an error however. */ | |
d1fab3fe | 2701 | if (u == other) { |
eef85c4a | 2702 | maybe_warn_about_dependency(original_u, original_other->id, d); |
87f0e418 | 2703 | return 0; |
d1fab3fe | 2704 | } |
87f0e418 | 2705 | |
eef85c4a LP |
2706 | if ((d == UNIT_BEFORE && other->type == UNIT_DEVICE) || |
2707 | (d == UNIT_AFTER && u->type == UNIT_DEVICE)) { | |
dd5e7000 ZJS |
2708 | log_unit_warning(u, "Dependency Before=%s ignored (.device units cannot be delayed)", other->id); |
2709 | return 0; | |
2710 | } | |
2711 | ||
eef85c4a | 2712 | r = unit_add_dependency_hashmap(u->dependencies + d, other, mask, 0); |
613b411c | 2713 | if (r < 0) |
87f0e418 LP |
2714 | return r; |
2715 | ||
eef85c4a LP |
2716 | if (inverse_table[d] != _UNIT_DEPENDENCY_INVALID && inverse_table[d] != d) { |
2717 | r = unit_add_dependency_hashmap(other->dependencies + inverse_table[d], u, 0, mask); | |
613b411c LP |
2718 | if (r < 0) |
2719 | return r; | |
2720 | } | |
2721 | ||
2722 | if (add_reference) { | |
eef85c4a | 2723 | r = unit_add_dependency_hashmap(u->dependencies + UNIT_REFERENCES, other, mask, 0); |
613b411c | 2724 | if (r < 0) |
5de9682c LP |
2725 | return r; |
2726 | ||
eef85c4a | 2727 | r = unit_add_dependency_hashmap(other->dependencies + UNIT_REFERENCED_BY, u, 0, mask); |
613b411c | 2728 | if (r < 0) |
701cc384 | 2729 | return r; |
613b411c | 2730 | } |
87f0e418 | 2731 | |
c1e1601e | 2732 | unit_add_to_dbus_queue(u); |
87f0e418 LP |
2733 | return 0; |
2734 | } | |
0301abf4 | 2735 | |
eef85c4a | 2736 | int unit_add_two_dependencies(Unit *u, UnitDependency d, UnitDependency e, Unit *other, bool add_reference, UnitDependencyMask mask) { |
2c966c03 LP |
2737 | int r; |
2738 | ||
2739 | assert(u); | |
2740 | ||
eef85c4a | 2741 | r = unit_add_dependency(u, d, other, add_reference, mask); |
3f3cc397 | 2742 | if (r < 0) |
2c966c03 LP |
2743 | return r; |
2744 | ||
eef85c4a | 2745 | return unit_add_dependency(u, e, other, add_reference, mask); |
2c966c03 LP |
2746 | } |
2747 | ||
7410616c LP |
2748 | static int resolve_template(Unit *u, const char *name, const char*path, char **buf, const char **ret) { |
2749 | int r; | |
9e2f7c11 LP |
2750 | |
2751 | assert(u); | |
2752 | assert(name || path); | |
7410616c LP |
2753 | assert(buf); |
2754 | assert(ret); | |
9e2f7c11 LP |
2755 | |
2756 | if (!name) | |
2b6bf07d | 2757 | name = basename(path); |
9e2f7c11 | 2758 | |
7410616c LP |
2759 | if (!unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) { |
2760 | *buf = NULL; | |
2761 | *ret = name; | |
2762 | return 0; | |
9e2f7c11 LP |
2763 | } |
2764 | ||
ac155bb8 | 2765 | if (u->instance) |
7410616c | 2766 | r = unit_name_replace_instance(name, u->instance, buf); |
9e2f7c11 | 2767 | else { |
ae018d9b | 2768 | _cleanup_free_ char *i = NULL; |
9e2f7c11 | 2769 | |
7410616c LP |
2770 | r = unit_name_to_prefix(u->id, &i); |
2771 | if (r < 0) | |
2772 | return r; | |
9e2f7c11 | 2773 | |
7410616c | 2774 | r = unit_name_replace_instance(name, i, buf); |
9e2f7c11 | 2775 | } |
7410616c LP |
2776 | if (r < 0) |
2777 | return r; | |
9e2f7c11 | 2778 | |
7410616c LP |
2779 | *ret = *buf; |
2780 | return 0; | |
9e2f7c11 LP |
2781 | } |
2782 | ||
eef85c4a | 2783 | int unit_add_dependency_by_name(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference, UnitDependencyMask mask) { |
7410616c | 2784 | _cleanup_free_ char *buf = NULL; |
09b6b09f LP |
2785 | Unit *other; |
2786 | int r; | |
2787 | ||
9e2f7c11 LP |
2788 | assert(u); |
2789 | assert(name || path); | |
09b6b09f | 2790 | |
7410616c LP |
2791 | r = resolve_template(u, name, path, &buf, &name); |
2792 | if (r < 0) | |
2793 | return r; | |
09b6b09f | 2794 | |
8afbb8e1 LP |
2795 | r = manager_load_unit(u->manager, name, path, NULL, &other); |
2796 | if (r < 0) | |
2797 | return r; | |
9e2f7c11 | 2798 | |
eef85c4a | 2799 | return unit_add_dependency(u, d, other, add_reference, mask); |
09b6b09f LP |
2800 | } |
2801 | ||
eef85c4a | 2802 | 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 | 2803 | _cleanup_free_ char *buf = NULL; |
2c966c03 LP |
2804 | Unit *other; |
2805 | int r; | |
2c966c03 LP |
2806 | |
2807 | assert(u); | |
2808 | assert(name || path); | |
2809 | ||
7410616c LP |
2810 | r = resolve_template(u, name, path, &buf, &name); |
2811 | if (r < 0) | |
2812 | return r; | |
2c966c03 | 2813 | |
3f3cc397 LP |
2814 | r = manager_load_unit(u->manager, name, path, NULL, &other); |
2815 | if (r < 0) | |
68eda4bd | 2816 | return r; |
2c966c03 | 2817 | |
eef85c4a | 2818 | return unit_add_two_dependencies(u, d, e, other, add_reference, mask); |
2c966c03 LP |
2819 | } |
2820 | ||
0301abf4 | 2821 | int set_unit_path(const char *p) { |
0301abf4 | 2822 | /* This is mostly for debug purposes */ |
cbe46ead | 2823 | if (setenv("SYSTEMD_UNIT_PATH", p, 1) < 0) |
26d04f86 | 2824 | return -errno; |
0301abf4 LP |
2825 | |
2826 | return 0; | |
2827 | } | |
88066b3a | 2828 | |
ea430986 | 2829 | char *unit_dbus_path(Unit *u) { |
ea430986 LP |
2830 | assert(u); |
2831 | ||
ac155bb8 | 2832 | if (!u->id) |
04ade7d2 LP |
2833 | return NULL; |
2834 | ||
48899192 | 2835 | return unit_dbus_path_from_name(u->id); |
ea430986 LP |
2836 | } |
2837 | ||
4b58153d LP |
2838 | char *unit_dbus_path_invocation_id(Unit *u) { |
2839 | assert(u); | |
2840 | ||
2841 | if (sd_id128_is_null(u->invocation_id)) | |
2842 | return NULL; | |
2843 | ||
2844 | return unit_dbus_path_from_name(u->invocation_id_string); | |
2845 | } | |
2846 | ||
d79200e2 LP |
2847 | int unit_set_slice(Unit *u, Unit *slice) { |
2848 | assert(u); | |
2849 | assert(slice); | |
2850 | ||
2851 | /* Sets the unit slice if it has not been set before. Is extra | |
2852 | * careful, to only allow this for units that actually have a | |
2853 | * cgroup context. Also, we don't allow to set this for slices | |
2854 | * (since the parent slice is derived from the name). Make | |
2855 | * sure the unit we set is actually a slice. */ | |
2856 | ||
2857 | if (!UNIT_HAS_CGROUP_CONTEXT(u)) | |
2858 | return -EOPNOTSUPP; | |
2859 | ||
2860 | if (u->type == UNIT_SLICE) | |
2861 | return -EINVAL; | |
2862 | ||
102ef982 LP |
2863 | if (unit_active_state(u) != UNIT_INACTIVE) |
2864 | return -EBUSY; | |
2865 | ||
d79200e2 LP |
2866 | if (slice->type != UNIT_SLICE) |
2867 | return -EINVAL; | |
2868 | ||
efdb0237 LP |
2869 | if (unit_has_name(u, SPECIAL_INIT_SCOPE) && |
2870 | !unit_has_name(slice, SPECIAL_ROOT_SLICE)) | |
2871 | return -EPERM; | |
2872 | ||
d79200e2 LP |
2873 | if (UNIT_DEREF(u->slice) == slice) |
2874 | return 0; | |
2875 | ||
99e66921 TH |
2876 | /* Disallow slice changes if @u is already bound to cgroups */ |
2877 | if (UNIT_ISSET(u->slice) && u->cgroup_realized) | |
d79200e2 LP |
2878 | return -EBUSY; |
2879 | ||
99e66921 | 2880 | unit_ref_unset(&u->slice); |
d79200e2 LP |
2881 | unit_ref_set(&u->slice, slice); |
2882 | return 1; | |
2883 | } | |
2884 | ||
2885 | int unit_set_default_slice(Unit *u) { | |
a8833944 LP |
2886 | _cleanup_free_ char *b = NULL; |
2887 | const char *slice_name; | |
a016b922 LP |
2888 | Unit *slice; |
2889 | int r; | |
2890 | ||
2891 | assert(u); | |
2892 | ||
9444b1f2 | 2893 | if (UNIT_ISSET(u->slice)) |
a016b922 LP |
2894 | return 0; |
2895 | ||
a8833944 LP |
2896 | if (u->instance) { |
2897 | _cleanup_free_ char *prefix = NULL, *escaped = NULL; | |
68eda4bd | 2898 | |
a8833944 LP |
2899 | /* Implicitly place all instantiated units in their |
2900 | * own per-template slice */ | |
2901 | ||
7410616c LP |
2902 | r = unit_name_to_prefix(u->id, &prefix); |
2903 | if (r < 0) | |
2904 | return r; | |
a8833944 LP |
2905 | |
2906 | /* The prefix is already escaped, but it might include | |
2907 | * "-" which has a special meaning for slice units, | |
2908 | * hence escape it here extra. */ | |
7410616c | 2909 | escaped = unit_name_escape(prefix); |
a8833944 LP |
2910 | if (!escaped) |
2911 | return -ENOMEM; | |
2912 | ||
463d0d15 | 2913 | if (MANAGER_IS_SYSTEM(u->manager)) |
605405c6 | 2914 | b = strjoin("system-", escaped, ".slice"); |
a8833944 LP |
2915 | else |
2916 | b = strappend(escaped, ".slice"); | |
2917 | if (!b) | |
2918 | return -ENOMEM; | |
2919 | ||
2920 | slice_name = b; | |
2921 | } else | |
2922 | slice_name = | |
463d0d15 | 2923 | MANAGER_IS_SYSTEM(u->manager) && !unit_has_name(u, SPECIAL_INIT_SCOPE) |
a8833944 LP |
2924 | ? SPECIAL_SYSTEM_SLICE |
2925 | : SPECIAL_ROOT_SLICE; | |
2926 | ||
2927 | r = manager_load_unit(u->manager, slice_name, NULL, NULL, &slice); | |
a016b922 LP |
2928 | if (r < 0) |
2929 | return r; | |
2930 | ||
d79200e2 | 2931 | return unit_set_slice(u, slice); |
a016b922 LP |
2932 | } |
2933 | ||
9444b1f2 LP |
2934 | const char *unit_slice_name(Unit *u) { |
2935 | assert(u); | |
2936 | ||
2937 | if (!UNIT_ISSET(u->slice)) | |
2938 | return NULL; | |
2939 | ||
2940 | return UNIT_DEREF(u->slice)->id; | |
2941 | } | |
2942 | ||
f6ff8c29 | 2943 | int unit_load_related_unit(Unit *u, const char *type, Unit **_found) { |
78edb35a | 2944 | _cleanup_free_ char *t = NULL; |
f6ff8c29 LP |
2945 | int r; |
2946 | ||
2947 | assert(u); | |
2948 | assert(type); | |
2949 | assert(_found); | |
2950 | ||
7410616c LP |
2951 | r = unit_name_change_suffix(u->id, type, &t); |
2952 | if (r < 0) | |
2953 | return r; | |
2954 | if (unit_has_name(u, t)) | |
2955 | return -EINVAL; | |
f6ff8c29 | 2956 | |
ac155bb8 | 2957 | r = manager_load_unit(u->manager, t, NULL, NULL, _found); |
9e2f7c11 | 2958 | assert(r < 0 || *_found != u); |
f6ff8c29 LP |
2959 | return r; |
2960 | } | |
2961 | ||
bbc29086 DM |
2962 | static int signal_name_owner_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
2963 | const char *name, *old_owner, *new_owner; | |
2964 | Unit *u = userdata; | |
2965 | int r; | |
2966 | ||
2967 | assert(message); | |
2968 | assert(u); | |
2969 | ||
2970 | r = sd_bus_message_read(message, "sss", &name, &old_owner, &new_owner); | |
2971 | if (r < 0) { | |
2972 | bus_log_parse_error(r); | |
2973 | return 0; | |
2974 | } | |
2975 | ||
b0076268 MK |
2976 | old_owner = isempty(old_owner) ? NULL : old_owner; |
2977 | new_owner = isempty(new_owner) ? NULL : new_owner; | |
2978 | ||
bbc29086 DM |
2979 | if (UNIT_VTABLE(u)->bus_name_owner_change) |
2980 | UNIT_VTABLE(u)->bus_name_owner_change(u, name, old_owner, new_owner); | |
2981 | ||
2982 | return 0; | |
2983 | } | |
2984 | ||
9806e87d LP |
2985 | int unit_install_bus_match(Unit *u, sd_bus *bus, const char *name) { |
2986 | const char *match; | |
bbc29086 | 2987 | |
9806e87d LP |
2988 | assert(u); |
2989 | assert(bus); | |
2990 | assert(name); | |
bbc29086 DM |
2991 | |
2992 | if (u->match_bus_slot) | |
2993 | return -EBUSY; | |
2994 | ||
9806e87d | 2995 | match = strjoina("type='signal'," |
81d62103 ZJS |
2996 | "sender='org.freedesktop.DBus'," |
2997 | "path='/org/freedesktop/DBus'," | |
2998 | "interface='org.freedesktop.DBus'," | |
2999 | "member='NameOwnerChanged'," | |
3000 | "arg0='", name, "'"); | |
bbc29086 DM |
3001 | |
3002 | return sd_bus_add_match(bus, &u->match_bus_slot, match, signal_name_owner_changed, u); | |
3003 | } | |
3004 | ||
05e343b7 | 3005 | int unit_watch_bus_name(Unit *u, const char *name) { |
bbc29086 DM |
3006 | int r; |
3007 | ||
05e343b7 LP |
3008 | assert(u); |
3009 | assert(name); | |
3010 | ||
3011 | /* Watch a specific name on the bus. We only support one unit | |
3012 | * watching each name for now. */ | |
3013 | ||
bbc29086 DM |
3014 | if (u->manager->api_bus) { |
3015 | /* If the bus is already available, install the match directly. | |
3016 | * Otherwise, just put the name in the list. bus_setup_api() will take care later. */ | |
9806e87d | 3017 | r = unit_install_bus_match(u, u->manager->api_bus, name); |
bbc29086 | 3018 | if (r < 0) |
8ea823b6 | 3019 | return log_warning_errno(r, "Failed to subscribe to NameOwnerChanged signal for '%s': %m", name); |
bbc29086 DM |
3020 | } |
3021 | ||
3022 | r = hashmap_put(u->manager->watch_bus, name, u); | |
3023 | if (r < 0) { | |
3024 | u->match_bus_slot = sd_bus_slot_unref(u->match_bus_slot); | |
3025 | return log_warning_errno(r, "Failed to put bus name to hashmap: %m"); | |
3026 | } | |
3027 | ||
3028 | return 0; | |
05e343b7 LP |
3029 | } |
3030 | ||
3031 | void unit_unwatch_bus_name(Unit *u, const char *name) { | |
3032 | assert(u); | |
3033 | assert(name); | |
3034 | ||
8367fea5 | 3035 | (void) hashmap_remove_value(u->manager->watch_bus, name, u); |
bbc29086 | 3036 | u->match_bus_slot = sd_bus_slot_unref(u->match_bus_slot); |
05e343b7 LP |
3037 | } |
3038 | ||
a16e1123 LP |
3039 | bool unit_can_serialize(Unit *u) { |
3040 | assert(u); | |
3041 | ||
3042 | return UNIT_VTABLE(u)->serialize && UNIT_VTABLE(u)->deserialize_item; | |
3043 | } | |
3044 | ||
8b108bd0 FB |
3045 | static int unit_serialize_cgroup_mask(FILE *f, const char *key, CGroupMask mask) { |
3046 | _cleanup_free_ char *s = NULL; | |
3047 | int r = 0; | |
3048 | ||
3049 | assert(f); | |
3050 | assert(key); | |
3051 | ||
3052 | if (mask != 0) { | |
3053 | r = cg_mask_to_string(mask, &s); | |
3054 | if (r >= 0) { | |
3055 | fputs(key, f); | |
3056 | fputc('=', f); | |
3057 | fputs(s, f); | |
3058 | fputc('\n', f); | |
3059 | } | |
3060 | } | |
3061 | return r; | |
3062 | } | |
3063 | ||
6b659ed8 LP |
3064 | static const char *ip_accounting_metric_field[_CGROUP_IP_ACCOUNTING_METRIC_MAX] = { |
3065 | [CGROUP_IP_INGRESS_BYTES] = "ip-accounting-ingress-bytes", | |
3066 | [CGROUP_IP_INGRESS_PACKETS] = "ip-accounting-ingress-packets", | |
3067 | [CGROUP_IP_EGRESS_BYTES] = "ip-accounting-egress-bytes", | |
3068 | [CGROUP_IP_EGRESS_PACKETS] = "ip-accounting-egress-packets", | |
3069 | }; | |
3070 | ||
6b78f9b4 | 3071 | int unit_serialize(Unit *u, FILE *f, FDSet *fds, bool serialize_jobs) { |
6b659ed8 | 3072 | CGroupIPAccountingMetric m; |
a16e1123 LP |
3073 | int r; |
3074 | ||
3075 | assert(u); | |
3076 | assert(f); | |
3077 | assert(fds); | |
3078 | ||
9bdb98c5 LP |
3079 | if (unit_can_serialize(u)) { |
3080 | ExecRuntime *rt; | |
a16e1123 | 3081 | |
9bdb98c5 | 3082 | r = UNIT_VTABLE(u)->serialize(u, f, fds); |
613b411c LP |
3083 | if (r < 0) |
3084 | return r; | |
9bdb98c5 LP |
3085 | |
3086 | rt = unit_get_exec_runtime(u); | |
3087 | if (rt) { | |
f2341e0a | 3088 | r = exec_runtime_serialize(u, rt, f, fds); |
9bdb98c5 LP |
3089 | if (r < 0) |
3090 | return r; | |
3091 | } | |
e0209d83 MS |
3092 | } |
3093 | ||
a483fb59 LP |
3094 | dual_timestamp_serialize(f, "state-change-timestamp", &u->state_change_timestamp); |
3095 | ||
ac155bb8 MS |
3096 | dual_timestamp_serialize(f, "inactive-exit-timestamp", &u->inactive_exit_timestamp); |
3097 | dual_timestamp_serialize(f, "active-enter-timestamp", &u->active_enter_timestamp); | |
3098 | dual_timestamp_serialize(f, "active-exit-timestamp", &u->active_exit_timestamp); | |
3099 | dual_timestamp_serialize(f, "inactive-enter-timestamp", &u->inactive_enter_timestamp); | |
a483fb59 | 3100 | |
ac155bb8 | 3101 | dual_timestamp_serialize(f, "condition-timestamp", &u->condition_timestamp); |
59fccdc5 | 3102 | dual_timestamp_serialize(f, "assert-timestamp", &u->assert_timestamp); |
2791a8f8 | 3103 | |
ac155bb8 MS |
3104 | if (dual_timestamp_is_set(&u->condition_timestamp)) |
3105 | unit_serialize_item(u, f, "condition-result", yes_no(u->condition_result)); | |
10717a1a | 3106 | |
59fccdc5 LP |
3107 | if (dual_timestamp_is_set(&u->assert_timestamp)) |
3108 | unit_serialize_item(u, f, "assert-result", yes_no(u->assert_result)); | |
3109 | ||
c2756a68 | 3110 | unit_serialize_item(u, f, "transient", yes_no(u->transient)); |
fe700f46 | 3111 | |
d3070fbd LP |
3112 | unit_serialize_item(u, f, "exported-invocation-id", yes_no(u->exported_invocation_id)); |
3113 | unit_serialize_item(u, f, "exported-log-level-max", yes_no(u->exported_log_level_max)); | |
3114 | unit_serialize_item(u, f, "exported-log-extra-fields", yes_no(u->exported_log_extra_fields)); | |
3115 | ||
66ebf6c0 | 3116 | unit_serialize_item_format(u, f, "cpu-usage-base", "%" PRIu64, u->cpu_usage_base); |
fe700f46 LP |
3117 | if (u->cpu_usage_last != NSEC_INFINITY) |
3118 | unit_serialize_item_format(u, f, "cpu-usage-last", "%" PRIu64, u->cpu_usage_last); | |
c2756a68 LP |
3119 | |
3120 | if (u->cgroup_path) | |
3121 | unit_serialize_item(u, f, "cgroup", u->cgroup_path); | |
de1d4f9b | 3122 | unit_serialize_item(u, f, "cgroup-realized", yes_no(u->cgroup_realized)); |
8b108bd0 FB |
3123 | (void) unit_serialize_cgroup_mask(f, "cgroup-realized-mask", u->cgroup_realized_mask); |
3124 | (void) unit_serialize_cgroup_mask(f, "cgroup-enabled-mask", u->cgroup_enabled_mask); | |
906c06f6 | 3125 | unit_serialize_item_format(u, f, "cgroup-bpf-realized", "%i", u->cgroup_bpf_state); |
c2756a68 | 3126 | |
00d9ef85 LP |
3127 | if (uid_is_valid(u->ref_uid)) |
3128 | unit_serialize_item_format(u, f, "ref-uid", UID_FMT, u->ref_uid); | |
3129 | if (gid_is_valid(u->ref_gid)) | |
3130 | unit_serialize_item_format(u, f, "ref-gid", GID_FMT, u->ref_gid); | |
3131 | ||
4b58153d LP |
3132 | if (!sd_id128_is_null(u->invocation_id)) |
3133 | unit_serialize_item_format(u, f, "invocation-id", SD_ID128_FORMAT_STR, SD_ID128_FORMAT_VAL(u->invocation_id)); | |
3134 | ||
05a98afd LP |
3135 | bus_track_serialize(u->bus_track, f, "ref"); |
3136 | ||
6b659ed8 LP |
3137 | for (m = 0; m < _CGROUP_IP_ACCOUNTING_METRIC_MAX; m++) { |
3138 | uint64_t v; | |
3139 | ||
3140 | r = unit_get_ip_accounting(u, m, &v); | |
3141 | if (r >= 0) | |
3142 | unit_serialize_item_format(u, f, ip_accounting_metric_field[m], "%" PRIu64, v); | |
3143 | } | |
3144 | ||
613b411c LP |
3145 | if (serialize_jobs) { |
3146 | if (u->job) { | |
3147 | fprintf(f, "job\n"); | |
05a98afd | 3148 | job_serialize(u->job, f); |
613b411c LP |
3149 | } |
3150 | ||
3151 | if (u->nop_job) { | |
3152 | fprintf(f, "job\n"); | |
05a98afd | 3153 | job_serialize(u->nop_job, f); |
613b411c LP |
3154 | } |
3155 | } | |
3156 | ||
a16e1123 LP |
3157 | /* End marker */ |
3158 | fputc('\n', f); | |
3159 | return 0; | |
3160 | } | |
3161 | ||
a34ceba6 LP |
3162 | int unit_serialize_item(Unit *u, FILE *f, const char *key, const char *value) { |
3163 | assert(u); | |
3164 | assert(f); | |
3165 | assert(key); | |
3166 | ||
3167 | if (!value) | |
3168 | return 0; | |
3169 | ||
3170 | fputs(key, f); | |
3171 | fputc('=', f); | |
3172 | fputs(value, f); | |
3173 | fputc('\n', f); | |
3174 | ||
3175 | return 1; | |
3176 | } | |
3177 | ||
3178 | int unit_serialize_item_escaped(Unit *u, FILE *f, const char *key, const char *value) { | |
3179 | _cleanup_free_ char *c = NULL; | |
3180 | ||
3181 | assert(u); | |
3182 | assert(f); | |
3183 | assert(key); | |
3184 | ||
3185 | if (!value) | |
3186 | return 0; | |
3187 | ||
3188 | c = cescape(value); | |
3189 | if (!c) | |
3190 | return -ENOMEM; | |
3191 | ||
3192 | fputs(key, f); | |
3193 | fputc('=', f); | |
3194 | fputs(c, f); | |
3195 | fputc('\n', f); | |
3196 | ||
3197 | return 1; | |
3198 | } | |
3199 | ||
3200 | int unit_serialize_item_fd(Unit *u, FILE *f, FDSet *fds, const char *key, int fd) { | |
3201 | int copy; | |
3202 | ||
3203 | assert(u); | |
3204 | assert(f); | |
3205 | assert(key); | |
3206 | ||
3207 | if (fd < 0) | |
3208 | return 0; | |
3209 | ||
3210 | copy = fdset_put_dup(fds, fd); | |
3211 | if (copy < 0) | |
3212 | return copy; | |
3213 | ||
3214 | fprintf(f, "%s=%i\n", key, copy); | |
3215 | return 1; | |
3216 | } | |
3217 | ||
a16e1123 LP |
3218 | void unit_serialize_item_format(Unit *u, FILE *f, const char *key, const char *format, ...) { |
3219 | va_list ap; | |
3220 | ||
3221 | assert(u); | |
3222 | assert(f); | |
3223 | assert(key); | |
3224 | assert(format); | |
3225 | ||
3226 | fputs(key, f); | |
3227 | fputc('=', f); | |
3228 | ||
3229 | va_start(ap, format); | |
3230 | vfprintf(f, format, ap); | |
3231 | va_end(ap); | |
3232 | ||
3233 | fputc('\n', f); | |
3234 | } | |
3235 | ||
a16e1123 | 3236 | int unit_deserialize(Unit *u, FILE *f, FDSet *fds) { |
28b99ccd | 3237 | ExecRuntime **rt = NULL; |
9bdb98c5 | 3238 | size_t offset; |
a16e1123 LP |
3239 | int r; |
3240 | ||
3241 | assert(u); | |
3242 | assert(f); | |
3243 | assert(fds); | |
3244 | ||
613b411c LP |
3245 | offset = UNIT_VTABLE(u)->exec_runtime_offset; |
3246 | if (offset > 0) | |
3247 | rt = (ExecRuntime**) ((uint8_t*) u + offset); | |
3248 | ||
a16e1123 | 3249 | for (;;) { |
20c03b7b | 3250 | char line[LINE_MAX], *l, *v; |
6b659ed8 | 3251 | CGroupIPAccountingMetric m; |
a16e1123 LP |
3252 | size_t k; |
3253 | ||
3254 | if (!fgets(line, sizeof(line), f)) { | |
3255 | if (feof(f)) | |
3256 | return 0; | |
3257 | return -errno; | |
3258 | } | |
3259 | ||
10f8e83c | 3260 | char_array_0(line); |
a16e1123 LP |
3261 | l = strstrip(line); |
3262 | ||
3263 | /* End marker */ | |
e911de99 | 3264 | if (isempty(l)) |
a483fb59 | 3265 | break; |
a16e1123 LP |
3266 | |
3267 | k = strcspn(l, "="); | |
3268 | ||
3269 | if (l[k] == '=') { | |
3270 | l[k] = 0; | |
3271 | v = l+k+1; | |
3272 | } else | |
3273 | v = l+k; | |
3274 | ||
cca098b0 | 3275 | if (streq(l, "job")) { |
39a18c60 MS |
3276 | if (v[0] == '\0') { |
3277 | /* new-style serialized job */ | |
9c3349e2 LP |
3278 | Job *j; |
3279 | ||
3280 | j = job_new_raw(u); | |
39a18c60 | 3281 | if (!j) |
e911de99 | 3282 | return log_oom(); |
39a18c60 | 3283 | |
05a98afd | 3284 | r = job_deserialize(j, f); |
39a18c60 MS |
3285 | if (r < 0) { |
3286 | job_free(j); | |
3287 | return r; | |
3288 | } | |
cca098b0 | 3289 | |
39a18c60 MS |
3290 | r = hashmap_put(u->manager->jobs, UINT32_TO_PTR(j->id), j); |
3291 | if (r < 0) { | |
3292 | job_free(j); | |
3293 | return r; | |
3294 | } | |
e0209d83 MS |
3295 | |
3296 | r = job_install_deserialized(j); | |
3297 | if (r < 0) { | |
3298 | hashmap_remove(u->manager->jobs, UINT32_TO_PTR(j->id)); | |
3299 | job_free(j); | |
3300 | return r; | |
3301 | } | |
ed10fa8c LP |
3302 | } else /* legacy for pre-44 */ |
3303 | log_unit_warning(u, "Update from too old systemd versions are unsupported, cannot deserialize job: %s", v); | |
cca098b0 | 3304 | continue; |
a483fb59 LP |
3305 | } else if (streq(l, "state-change-timestamp")) { |
3306 | dual_timestamp_deserialize(v, &u->state_change_timestamp); | |
3307 | continue; | |
8aaf019b | 3308 | } else if (streq(l, "inactive-exit-timestamp")) { |
ac155bb8 | 3309 | dual_timestamp_deserialize(v, &u->inactive_exit_timestamp); |
8aaf019b LP |
3310 | continue; |
3311 | } else if (streq(l, "active-enter-timestamp")) { | |
ac155bb8 | 3312 | dual_timestamp_deserialize(v, &u->active_enter_timestamp); |
8aaf019b LP |
3313 | continue; |
3314 | } else if (streq(l, "active-exit-timestamp")) { | |
ac155bb8 | 3315 | dual_timestamp_deserialize(v, &u->active_exit_timestamp); |
8aaf019b LP |
3316 | continue; |
3317 | } else if (streq(l, "inactive-enter-timestamp")) { | |
ac155bb8 | 3318 | dual_timestamp_deserialize(v, &u->inactive_enter_timestamp); |
8aaf019b | 3319 | continue; |
2791a8f8 | 3320 | } else if (streq(l, "condition-timestamp")) { |
ac155bb8 | 3321 | dual_timestamp_deserialize(v, &u->condition_timestamp); |
2791a8f8 | 3322 | continue; |
59fccdc5 LP |
3323 | } else if (streq(l, "assert-timestamp")) { |
3324 | dual_timestamp_deserialize(v, &u->assert_timestamp); | |
3325 | continue; | |
2791a8f8 | 3326 | } else if (streq(l, "condition-result")) { |
2791a8f8 | 3327 | |
e911de99 LP |
3328 | r = parse_boolean(v); |
3329 | if (r < 0) | |
f2341e0a | 3330 | log_unit_debug(u, "Failed to parse condition result value %s, ignoring.", v); |
2791a8f8 | 3331 | else |
e911de99 | 3332 | u->condition_result = r; |
efbac6d2 LP |
3333 | |
3334 | continue; | |
c2756a68 | 3335 | |
59fccdc5 | 3336 | } else if (streq(l, "assert-result")) { |
59fccdc5 | 3337 | |
e911de99 LP |
3338 | r = parse_boolean(v); |
3339 | if (r < 0) | |
f2341e0a | 3340 | log_unit_debug(u, "Failed to parse assert result value %s, ignoring.", v); |
59fccdc5 | 3341 | else |
e911de99 | 3342 | u->assert_result = r; |
59fccdc5 LP |
3343 | |
3344 | continue; | |
3345 | ||
c2756a68 | 3346 | } else if (streq(l, "transient")) { |
c2756a68 | 3347 | |
e911de99 LP |
3348 | r = parse_boolean(v); |
3349 | if (r < 0) | |
f2341e0a | 3350 | log_unit_debug(u, "Failed to parse transient bool %s, ignoring.", v); |
c2756a68 | 3351 | else |
e911de99 | 3352 | u->transient = r; |
c2756a68 LP |
3353 | |
3354 | continue; | |
e911de99 | 3355 | |
d3070fbd LP |
3356 | } else if (streq(l, "exported-invocation-id")) { |
3357 | ||
3358 | r = parse_boolean(v); | |
3359 | if (r < 0) | |
3360 | log_unit_debug(u, "Failed to parse exported invocation ID bool %s, ignoring.", v); | |
3361 | else | |
3362 | u->exported_invocation_id = r; | |
3363 | ||
3364 | continue; | |
3365 | ||
3366 | } else if (streq(l, "exported-log-level-max")) { | |
3367 | ||
3368 | r = parse_boolean(v); | |
3369 | if (r < 0) | |
3370 | log_unit_debug(u, "Failed to parse exported log level max bool %s, ignoring.", v); | |
3371 | else | |
3372 | u->exported_log_level_max = r; | |
3373 | ||
3374 | continue; | |
3375 | ||
3376 | } else if (streq(l, "exported-log-extra-fields")) { | |
3377 | ||
3378 | r = parse_boolean(v); | |
3379 | if (r < 0) | |
3380 | log_unit_debug(u, "Failed to parse exported log extra fields bool %s, ignoring.", v); | |
3381 | else | |
3382 | u->exported_log_extra_fields = r; | |
3383 | ||
3384 | continue; | |
3385 | ||
fe700f46 | 3386 | } else if (STR_IN_SET(l, "cpu-usage-base", "cpuacct-usage-base")) { |
5ad096b3 | 3387 | |
66ebf6c0 | 3388 | r = safe_atou64(v, &u->cpu_usage_base); |
5ad096b3 | 3389 | if (r < 0) |
fe700f46 LP |
3390 | log_unit_debug(u, "Failed to parse CPU usage base %s, ignoring.", v); |
3391 | ||
3392 | continue; | |
3393 | ||
3394 | } else if (streq(l, "cpu-usage-last")) { | |
3395 | ||
3396 | r = safe_atou64(v, &u->cpu_usage_last); | |
3397 | if (r < 0) | |
3398 | log_unit_debug(u, "Failed to read CPU usage last %s, ignoring.", v); | |
5ad096b3 | 3399 | |
0f908397 | 3400 | continue; |
4e595329 | 3401 | |
e911de99 | 3402 | } else if (streq(l, "cgroup")) { |
72673e86 | 3403 | |
e911de99 LP |
3404 | r = unit_set_cgroup_path(u, v); |
3405 | if (r < 0) | |
f2341e0a | 3406 | log_unit_debug_errno(u, r, "Failed to set cgroup path %s, ignoring: %m", v); |
4e595329 | 3407 | |
efdb0237 LP |
3408 | (void) unit_watch_cgroup(u); |
3409 | ||
de1d4f9b WF |
3410 | continue; |
3411 | } else if (streq(l, "cgroup-realized")) { | |
3412 | int b; | |
3413 | ||
3414 | b = parse_boolean(v); | |
3415 | if (b < 0) | |
3416 | log_unit_debug(u, "Failed to parse cgroup-realized bool %s, ignoring.", v); | |
3417 | else | |
3418 | u->cgroup_realized = b; | |
3419 | ||
c2756a68 | 3420 | continue; |
00d9ef85 | 3421 | |
8b108bd0 FB |
3422 | } else if (streq(l, "cgroup-realized-mask")) { |
3423 | ||
3424 | r = cg_mask_from_string(v, &u->cgroup_realized_mask); | |
3425 | if (r < 0) | |
3426 | log_unit_debug(u, "Failed to parse cgroup-realized-mask %s, ignoring.", v); | |
3427 | continue; | |
3428 | ||
3429 | } else if (streq(l, "cgroup-enabled-mask")) { | |
3430 | ||
3431 | r = cg_mask_from_string(v, &u->cgroup_enabled_mask); | |
3432 | if (r < 0) | |
3433 | log_unit_debug(u, "Failed to parse cgroup-enabled-mask %s, ignoring.", v); | |
3434 | continue; | |
3435 | ||
906c06f6 DM |
3436 | } else if (streq(l, "cgroup-bpf-realized")) { |
3437 | int i; | |
3438 | ||
3439 | r = safe_atoi(v, &i); | |
3440 | if (r < 0) | |
3441 | log_unit_debug(u, "Failed to parse cgroup BPF state %s, ignoring.", v); | |
3442 | else | |
3443 | u->cgroup_bpf_state = | |
3444 | i < 0 ? UNIT_CGROUP_BPF_INVALIDATED : | |
3445 | i > 0 ? UNIT_CGROUP_BPF_ON : | |
3446 | UNIT_CGROUP_BPF_OFF; | |
3447 | ||
3448 | continue; | |
3449 | ||
00d9ef85 LP |
3450 | } else if (streq(l, "ref-uid")) { |
3451 | uid_t uid; | |
3452 | ||
3453 | r = parse_uid(v, &uid); | |
3454 | if (r < 0) | |
3455 | log_unit_debug(u, "Failed to parse referenced UID %s, ignoring.", v); | |
3456 | else | |
3457 | unit_ref_uid_gid(u, uid, GID_INVALID); | |
3458 | ||
3459 | continue; | |
3460 | ||
3461 | } else if (streq(l, "ref-gid")) { | |
3462 | gid_t gid; | |
3463 | ||
3464 | r = parse_gid(v, &gid); | |
3465 | if (r < 0) | |
3466 | log_unit_debug(u, "Failed to parse referenced GID %s, ignoring.", v); | |
3467 | else | |
3468 | unit_ref_uid_gid(u, UID_INVALID, gid); | |
3469 | ||
05a98afd LP |
3470 | } else if (streq(l, "ref")) { |
3471 | ||
3472 | r = strv_extend(&u->deserialized_refs, v); | |
3473 | if (r < 0) | |
3474 | log_oom(); | |
3475 | ||
4b58153d LP |
3476 | continue; |
3477 | } else if (streq(l, "invocation-id")) { | |
3478 | sd_id128_t id; | |
3479 | ||
3480 | r = sd_id128_from_string(v, &id); | |
3481 | if (r < 0) | |
3482 | log_unit_debug(u, "Failed to parse invocation id %s, ignoring.", v); | |
3483 | else { | |
3484 | r = unit_set_invocation_id(u, id); | |
3485 | if (r < 0) | |
3486 | log_unit_warning_errno(u, r, "Failed to set invocation ID for unit: %m"); | |
3487 | } | |
3488 | ||
00d9ef85 | 3489 | continue; |
8aaf019b | 3490 | } |
cca098b0 | 3491 | |
6b659ed8 LP |
3492 | /* Check if this is an IP accounting metric serialization field */ |
3493 | for (m = 0; m < _CGROUP_IP_ACCOUNTING_METRIC_MAX; m++) | |
3494 | if (streq(l, ip_accounting_metric_field[m])) | |
3495 | break; | |
3496 | if (m < _CGROUP_IP_ACCOUNTING_METRIC_MAX) { | |
3497 | uint64_t c; | |
3498 | ||
3499 | r = safe_atou64(v, &c); | |
3500 | if (r < 0) | |
3501 | log_unit_debug(u, "Failed to parse IP accounting value %s, ignoring.", v); | |
3502 | else | |
3503 | u->ip_accounting_extra[m] = c; | |
3504 | continue; | |
3505 | } | |
3506 | ||
9bdb98c5 LP |
3507 | if (unit_can_serialize(u)) { |
3508 | if (rt) { | |
f2341e0a | 3509 | r = exec_runtime_deserialize_item(u, rt, l, v, fds); |
e911de99 | 3510 | if (r < 0) { |
f2341e0a | 3511 | log_unit_warning(u, "Failed to deserialize runtime parameter '%s', ignoring.", l); |
e911de99 LP |
3512 | continue; |
3513 | } | |
3514 | ||
3515 | /* Returns positive if key was handled by the call */ | |
9bdb98c5 LP |
3516 | if (r > 0) |
3517 | continue; | |
3518 | } | |
3519 | ||
3520 | r = UNIT_VTABLE(u)->deserialize_item(u, l, v, fds); | |
613b411c | 3521 | if (r < 0) |
f2341e0a | 3522 | log_unit_warning(u, "Failed to deserialize unit parameter '%s', ignoring.", l); |
613b411c | 3523 | } |
a16e1123 | 3524 | } |
a483fb59 LP |
3525 | |
3526 | /* Versions before 228 did not carry a state change timestamp. In this case, take the current time. This is | |
3527 | * useful, so that timeouts based on this timestamp don't trigger too early, and is in-line with the logic from | |
1f133e0d | 3528 | * before 228 where the base for timeouts was not persistent across reboots. */ |
a483fb59 LP |
3529 | |
3530 | if (!dual_timestamp_is_set(&u->state_change_timestamp)) | |
3531 | dual_timestamp_get(&u->state_change_timestamp); | |
3532 | ||
58d83430 LP |
3533 | /* Let's make sure that everything that is deserialized also gets any potential new cgroup settings applied |
3534 | * after we are done. For that we invalidate anything already realized, so that we can realize it again. */ | |
3535 | unit_invalidate_cgroup(u, _CGROUP_MASK_ALL); | |
3536 | unit_invalidate_cgroup_bpf(u); | |
3537 | ||
a483fb59 | 3538 | return 0; |
a16e1123 LP |
3539 | } |
3540 | ||
07429866 ZJS |
3541 | void unit_deserialize_skip(FILE *f) { |
3542 | assert(f); | |
3543 | ||
3544 | /* Skip serialized data for this unit. We don't know what it is. */ | |
3545 | ||
3546 | for (;;) { | |
3547 | char line[LINE_MAX], *l; | |
3548 | ||
3549 | if (!fgets(line, sizeof line, f)) | |
3550 | return; | |
3551 | ||
3552 | char_array_0(line); | |
3553 | l = strstrip(line); | |
3554 | ||
3555 | /* End marker */ | |
3556 | if (isempty(l)) | |
3557 | return; | |
3558 | } | |
3559 | } | |
3560 | ||
3561 | ||
eef85c4a | 3562 | int unit_add_node_dependency(Unit *u, const char *what, bool wants, UnitDependency dep, UnitDependencyMask mask) { |
6e2ef85b | 3563 | Unit *device; |
68eda4bd | 3564 | _cleanup_free_ char *e = NULL; |
6e2ef85b LP |
3565 | int r; |
3566 | ||
3567 | assert(u); | |
3568 | ||
6e2ef85b | 3569 | /* Adds in links to the device node that this unit is based on */ |
47bc12e1 LP |
3570 | if (isempty(what)) |
3571 | return 0; | |
6e2ef85b | 3572 | |
8407a5d0 | 3573 | if (!is_device_path(what)) |
6e2ef85b LP |
3574 | return 0; |
3575 | ||
47bc12e1 LP |
3576 | /* When device units aren't supported (such as in a |
3577 | * container), don't create dependencies on them. */ | |
1c2e9646 | 3578 | if (!unit_type_supported(UNIT_DEVICE)) |
47bc12e1 LP |
3579 | return 0; |
3580 | ||
7410616c LP |
3581 | r = unit_name_from_path(what, ".device", &e); |
3582 | if (r < 0) | |
3583 | return r; | |
6e2ef85b | 3584 | |
ac155bb8 | 3585 | r = manager_load_unit(u->manager, e, NULL, NULL, &device); |
6e2ef85b LP |
3586 | if (r < 0) |
3587 | return r; | |
3588 | ||
ebc8968b FB |
3589 | if (dep == UNIT_REQUIRES && device_shall_be_bound_by(device, u)) |
3590 | dep = UNIT_BINDS_TO; | |
3591 | ||
9d06297e | 3592 | r = unit_add_two_dependencies(u, UNIT_AFTER, |
463d0d15 | 3593 | MANAGER_IS_SYSTEM(u->manager) ? dep : UNIT_WANTS, |
eef85c4a | 3594 | device, true, mask); |
faa368e3 | 3595 | if (r < 0) |
6e2ef85b LP |
3596 | return r; |
3597 | ||
faa368e3 | 3598 | if (wants) { |
eef85c4a | 3599 | r = unit_add_dependency(device, UNIT_WANTS, u, false, mask); |
faa368e3 | 3600 | if (r < 0) |
6e2ef85b | 3601 | return r; |
faa368e3 | 3602 | } |
6e2ef85b LP |
3603 | |
3604 | return 0; | |
3605 | } | |
a16e1123 | 3606 | |
be847e82 | 3607 | int unit_coldplug(Unit *u) { |
05a98afd LP |
3608 | int r = 0, q; |
3609 | char **i; | |
cca098b0 LP |
3610 | |
3611 | assert(u); | |
3612 | ||
f78f265f LP |
3613 | /* Make sure we don't enter a loop, when coldplugging |
3614 | * recursively. */ | |
3615 | if (u->coldplugged) | |
3616 | return 0; | |
3617 | ||
3618 | u->coldplugged = true; | |
3619 | ||
05a98afd LP |
3620 | STRV_FOREACH(i, u->deserialized_refs) { |
3621 | q = bus_unit_track_add_name(u, *i); | |
3622 | if (q < 0 && r >= 0) | |
3623 | r = q; | |
3624 | } | |
3625 | u->deserialized_refs = strv_free(u->deserialized_refs); | |
cca098b0 | 3626 | |
05a98afd LP |
3627 | if (UNIT_VTABLE(u)->coldplug) { |
3628 | q = UNIT_VTABLE(u)->coldplug(u); | |
3629 | if (q < 0 && r >= 0) | |
3630 | r = q; | |
3631 | } | |
5a6158b6 | 3632 | |
05a98afd LP |
3633 | if (u->job) { |
3634 | q = job_coldplug(u->job); | |
3635 | if (q < 0 && r >= 0) | |
3636 | r = q; | |
3637 | } | |
cca098b0 | 3638 | |
05a98afd | 3639 | return r; |
cca098b0 LP |
3640 | } |
3641 | ||
ba25d39e | 3642 | static bool fragment_mtime_newer(const char *path, usec_t mtime, bool path_masked) { |
21b95806 ZJS |
3643 | struct stat st; |
3644 | ||
3645 | if (!path) | |
3646 | return false; | |
3647 | ||
77969722 LP |
3648 | /* If the source is some virtual kernel file system, then we assume we watch it anyway, and hence pretend we |
3649 | * are never out-of-date. */ | |
3650 | if (PATH_STARTSWITH_SET(path, "/proc", "/sys")) | |
3651 | return false; | |
3652 | ||
21b95806 ZJS |
3653 | if (stat(path, &st) < 0) |
3654 | /* What, cannot access this anymore? */ | |
3655 | return true; | |
3656 | ||
ba25d39e ZJS |
3657 | if (path_masked) |
3658 | /* For masked files check if they are still so */ | |
3659 | return !null_or_empty(&st); | |
3660 | else | |
3a8db9fe | 3661 | /* For non-empty files check the mtime */ |
87ec20ef | 3662 | return timespec_load(&st.st_mtim) > mtime; |
21b95806 ZJS |
3663 | |
3664 | return false; | |
3665 | } | |
3666 | ||
45fb0699 | 3667 | bool unit_need_daemon_reload(Unit *u) { |
ae7a7182 OS |
3668 | _cleanup_strv_free_ char **t = NULL; |
3669 | char **path; | |
1b64d026 | 3670 | |
45fb0699 LP |
3671 | assert(u); |
3672 | ||
ba25d39e ZJS |
3673 | /* For unit files, we allow masking… */ |
3674 | if (fragment_mtime_newer(u->fragment_path, u->fragment_mtime, | |
3675 | u->load_state == UNIT_MASKED)) | |
21b95806 | 3676 | return true; |
5f4b19f4 | 3677 | |
ba25d39e ZJS |
3678 | /* Source paths should not be masked… */ |
3679 | if (fragment_mtime_newer(u->source_path, u->source_mtime, false)) | |
ab932a62 | 3680 | return true; |
ae7a7182 | 3681 | |
19a44dfe LR |
3682 | if (u->load_state == UNIT_LOADED) |
3683 | (void) unit_find_dropin_paths(u, &t); | |
ab932a62 LP |
3684 | if (!strv_equal(u->dropin_paths, t)) |
3685 | return true; | |
6d10d308 | 3686 | |
ba25d39e | 3687 | /* … any drop-ins that are masked are simply omitted from the list. */ |
ab932a62 | 3688 | STRV_FOREACH(path, u->dropin_paths) |
ba25d39e | 3689 | if (fragment_mtime_newer(*path, u->dropin_mtime, false)) |
ab932a62 | 3690 | return true; |
21b95806 | 3691 | |
ab932a62 | 3692 | return false; |
45fb0699 LP |
3693 | } |
3694 | ||
fdf20a31 | 3695 | void unit_reset_failed(Unit *u) { |
5632e374 LP |
3696 | assert(u); |
3697 | ||
fdf20a31 MM |
3698 | if (UNIT_VTABLE(u)->reset_failed) |
3699 | UNIT_VTABLE(u)->reset_failed(u); | |
6bf0f408 LP |
3700 | |
3701 | RATELIMIT_RESET(u->start_limit); | |
3702 | u->start_limit_hit = false; | |
5632e374 LP |
3703 | } |
3704 | ||
a7f241db LP |
3705 | Unit *unit_following(Unit *u) { |
3706 | assert(u); | |
3707 | ||
3708 | if (UNIT_VTABLE(u)->following) | |
3709 | return UNIT_VTABLE(u)->following(u); | |
3710 | ||
3711 | return NULL; | |
3712 | } | |
3713 | ||
31afa0a4 | 3714 | bool unit_stop_pending(Unit *u) { |
18ffdfda LP |
3715 | assert(u); |
3716 | ||
31afa0a4 LP |
3717 | /* This call does check the current state of the unit. It's |
3718 | * hence useful to be called from state change calls of the | |
3719 | * unit itself, where the state isn't updated yet. This is | |
3720 | * different from unit_inactive_or_pending() which checks both | |
3721 | * the current state and for a queued job. */ | |
18ffdfda | 3722 | |
31afa0a4 LP |
3723 | return u->job && u->job->type == JOB_STOP; |
3724 | } | |
3725 | ||
3726 | bool unit_inactive_or_pending(Unit *u) { | |
3727 | assert(u); | |
3728 | ||
3729 | /* Returns true if the unit is inactive or going down */ | |
18ffdfda | 3730 | |
d956ac29 LP |
3731 | if (UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))) |
3732 | return true; | |
3733 | ||
31afa0a4 | 3734 | if (unit_stop_pending(u)) |
18ffdfda LP |
3735 | return true; |
3736 | ||
3737 | return false; | |
3738 | } | |
3739 | ||
31afa0a4 | 3740 | bool unit_active_or_pending(Unit *u) { |
f976f3f6 LP |
3741 | assert(u); |
3742 | ||
f60c2665 | 3743 | /* Returns true if the unit is active or going up */ |
f976f3f6 LP |
3744 | |
3745 | if (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) | |
3746 | return true; | |
3747 | ||
ac155bb8 | 3748 | if (u->job && |
3742095b | 3749 | IN_SET(u->job->type, JOB_START, JOB_RELOAD_OR_START, JOB_RESTART)) |
f976f3f6 LP |
3750 | return true; |
3751 | ||
3752 | return false; | |
3753 | } | |
3754 | ||
718db961 | 3755 | int unit_kill(Unit *u, KillWho w, int signo, sd_bus_error *error) { |
8a0867d6 LP |
3756 | assert(u); |
3757 | assert(w >= 0 && w < _KILL_WHO_MAX); | |
6eb7c172 | 3758 | assert(SIGNAL_VALID(signo)); |
8a0867d6 | 3759 | |
8a0867d6 | 3760 | if (!UNIT_VTABLE(u)->kill) |
15411c0c | 3761 | return -EOPNOTSUPP; |
8a0867d6 | 3762 | |
c74f17d9 | 3763 | return UNIT_VTABLE(u)->kill(u, w, signo, error); |
8a0867d6 LP |
3764 | } |
3765 | ||
82659fd7 LP |
3766 | static Set *unit_pid_set(pid_t main_pid, pid_t control_pid) { |
3767 | Set *pid_set; | |
3768 | int r; | |
3769 | ||
d5099efc | 3770 | pid_set = set_new(NULL); |
82659fd7 LP |
3771 | if (!pid_set) |
3772 | return NULL; | |
3773 | ||
3774 | /* Exclude the main/control pids from being killed via the cgroup */ | |
3775 | if (main_pid > 0) { | |
fea72cc0 | 3776 | r = set_put(pid_set, PID_TO_PTR(main_pid)); |
82659fd7 LP |
3777 | if (r < 0) |
3778 | goto fail; | |
3779 | } | |
3780 | ||
3781 | if (control_pid > 0) { | |
fea72cc0 | 3782 | r = set_put(pid_set, PID_TO_PTR(control_pid)); |
82659fd7 LP |
3783 | if (r < 0) |
3784 | goto fail; | |
3785 | } | |
3786 | ||
3787 | return pid_set; | |
3788 | ||
3789 | fail: | |
3790 | set_free(pid_set); | |
3791 | return NULL; | |
3792 | } | |
3793 | ||
d91c34f2 LP |
3794 | int unit_kill_common( |
3795 | Unit *u, | |
3796 | KillWho who, | |
3797 | int signo, | |
3798 | pid_t main_pid, | |
3799 | pid_t control_pid, | |
718db961 | 3800 | sd_bus_error *error) { |
d91c34f2 | 3801 | |
814cc562 | 3802 | int r = 0; |
ac5e3a50 | 3803 | bool killed = false; |
814cc562 | 3804 | |
ac5e3a50 | 3805 | if (IN_SET(who, KILL_MAIN, KILL_MAIN_FAIL)) { |
814cc562 | 3806 | if (main_pid < 0) |
7358dc02 | 3807 | return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_PROCESS, "%s units have no main processes", unit_type_to_string(u->type)); |
52f448c3 | 3808 | else if (main_pid == 0) |
7358dc02 | 3809 | return sd_bus_error_set_const(error, BUS_ERROR_NO_SUCH_PROCESS, "No main process to kill"); |
814cc562 MS |
3810 | } |
3811 | ||
ac5e3a50 | 3812 | if (IN_SET(who, KILL_CONTROL, KILL_CONTROL_FAIL)) { |
814cc562 | 3813 | if (control_pid < 0) |
7358dc02 | 3814 | return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_PROCESS, "%s units have no control processes", unit_type_to_string(u->type)); |
52f448c3 | 3815 | else if (control_pid == 0) |
7358dc02 | 3816 | return sd_bus_error_set_const(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill"); |
814cc562 MS |
3817 | } |
3818 | ||
ac5e3a50 JS |
3819 | if (IN_SET(who, KILL_CONTROL, KILL_CONTROL_FAIL, KILL_ALL, KILL_ALL_FAIL)) |
3820 | if (control_pid > 0) { | |
814cc562 MS |
3821 | if (kill(control_pid, signo) < 0) |
3822 | r = -errno; | |
ac5e3a50 JS |
3823 | else |
3824 | killed = true; | |
3825 | } | |
814cc562 | 3826 | |
ac5e3a50 JS |
3827 | if (IN_SET(who, KILL_MAIN, KILL_MAIN_FAIL, KILL_ALL, KILL_ALL_FAIL)) |
3828 | if (main_pid > 0) { | |
814cc562 MS |
3829 | if (kill(main_pid, signo) < 0) |
3830 | r = -errno; | |
ac5e3a50 JS |
3831 | else |
3832 | killed = true; | |
3833 | } | |
814cc562 | 3834 | |
ac5e3a50 | 3835 | if (IN_SET(who, KILL_ALL, KILL_ALL_FAIL) && u->cgroup_path) { |
814cc562 MS |
3836 | _cleanup_set_free_ Set *pid_set = NULL; |
3837 | int q; | |
3838 | ||
82659fd7 LP |
3839 | /* Exclude the main/control pids from being killed via the cgroup */ |
3840 | pid_set = unit_pid_set(main_pid, control_pid); | |
814cc562 MS |
3841 | if (!pid_set) |
3842 | return -ENOMEM; | |
3843 | ||
1d98fef1 | 3844 | q = cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, signo, 0, pid_set, NULL, NULL); |
4c701096 | 3845 | if (q < 0 && !IN_SET(q, -EAGAIN, -ESRCH, -ENOENT)) |
814cc562 | 3846 | r = q; |
ac5e3a50 JS |
3847 | else |
3848 | killed = true; | |
814cc562 MS |
3849 | } |
3850 | ||
201f0c91 | 3851 | if (r == 0 && !killed && IN_SET(who, KILL_ALL_FAIL, KILL_CONTROL_FAIL)) |
ac5e3a50 JS |
3852 | return -ESRCH; |
3853 | ||
814cc562 MS |
3854 | return r; |
3855 | } | |
3856 | ||
6210e7fc LP |
3857 | int unit_following_set(Unit *u, Set **s) { |
3858 | assert(u); | |
3859 | assert(s); | |
3860 | ||
3861 | if (UNIT_VTABLE(u)->following_set) | |
3862 | return UNIT_VTABLE(u)->following_set(u, s); | |
3863 | ||
3864 | *s = NULL; | |
3865 | return 0; | |
3866 | } | |
3867 | ||
a4375746 | 3868 | UnitFileState unit_get_unit_file_state(Unit *u) { |
0ec0deaa LP |
3869 | int r; |
3870 | ||
a4375746 LP |
3871 | assert(u); |
3872 | ||
0ec0deaa LP |
3873 | if (u->unit_file_state < 0 && u->fragment_path) { |
3874 | r = unit_file_get_state( | |
463d0d15 | 3875 | u->manager->unit_file_scope, |
0ec0deaa LP |
3876 | NULL, |
3877 | basename(u->fragment_path), | |
3878 | &u->unit_file_state); | |
3879 | if (r < 0) | |
3880 | u->unit_file_state = UNIT_FILE_BAD; | |
3881 | } | |
a4375746 | 3882 | |
ac155bb8 | 3883 | return u->unit_file_state; |
a4375746 LP |
3884 | } |
3885 | ||
d2dc52db LP |
3886 | int unit_get_unit_file_preset(Unit *u) { |
3887 | assert(u); | |
3888 | ||
3889 | if (u->unit_file_preset < 0 && u->fragment_path) | |
3890 | u->unit_file_preset = unit_file_query_preset( | |
463d0d15 | 3891 | u->manager->unit_file_scope, |
0ec0deaa LP |
3892 | NULL, |
3893 | basename(u->fragment_path)); | |
d2dc52db LP |
3894 | |
3895 | return u->unit_file_preset; | |
3896 | } | |
3897 | ||
57020a3a LP |
3898 | Unit* unit_ref_set(UnitRef *ref, Unit *u) { |
3899 | assert(ref); | |
3900 | assert(u); | |
3901 | ||
3902 | if (ref->unit) | |
3903 | unit_ref_unset(ref); | |
3904 | ||
3905 | ref->unit = u; | |
71fda00f | 3906 | LIST_PREPEND(refs, u->refs, ref); |
57020a3a LP |
3907 | return u; |
3908 | } | |
3909 | ||
3910 | void unit_ref_unset(UnitRef *ref) { | |
3911 | assert(ref); | |
3912 | ||
3913 | if (!ref->unit) | |
3914 | return; | |
3915 | ||
b75102e5 LP |
3916 | /* We are about to drop a reference to the unit, make sure the garbage collection has a look at it as it might |
3917 | * be unreferenced now. */ | |
3918 | unit_add_to_gc_queue(ref->unit); | |
3919 | ||
71fda00f | 3920 | LIST_REMOVE(refs, ref->unit->refs, ref); |
57020a3a LP |
3921 | ref->unit = NULL; |
3922 | } | |
3923 | ||
29206d46 LP |
3924 | static int user_from_unit_name(Unit *u, char **ret) { |
3925 | ||
3926 | static const uint8_t hash_key[] = { | |
3927 | 0x58, 0x1a, 0xaf, 0xe6, 0x28, 0x58, 0x4e, 0x96, | |
3928 | 0xb4, 0x4e, 0xf5, 0x3b, 0x8c, 0x92, 0x07, 0xec | |
3929 | }; | |
3930 | ||
3931 | _cleanup_free_ char *n = NULL; | |
3932 | int r; | |
3933 | ||
3934 | r = unit_name_to_prefix(u->id, &n); | |
3935 | if (r < 0) | |
3936 | return r; | |
3937 | ||
3938 | if (valid_user_group_name(n)) { | |
3939 | *ret = n; | |
3940 | n = NULL; | |
3941 | return 0; | |
3942 | } | |
3943 | ||
3944 | /* If we can't use the unit name as a user name, then let's hash it and use that */ | |
3945 | if (asprintf(ret, "_du%016" PRIx64, siphash24(n, strlen(n), hash_key)) < 0) | |
3946 | return -ENOMEM; | |
3947 | ||
3948 | return 0; | |
3949 | } | |
3950 | ||
598459ce LP |
3951 | int unit_patch_contexts(Unit *u) { |
3952 | CGroupContext *cc; | |
3953 | ExecContext *ec; | |
cba6e062 LP |
3954 | unsigned i; |
3955 | int r; | |
3956 | ||
e06c73cc | 3957 | assert(u); |
e06c73cc | 3958 | |
598459ce LP |
3959 | /* Patch in the manager defaults into the exec and cgroup |
3960 | * contexts, _after_ the rest of the settings have been | |
3961 | * initialized */ | |
085afe36 | 3962 | |
598459ce LP |
3963 | ec = unit_get_exec_context(u); |
3964 | if (ec) { | |
3965 | /* This only copies in the ones that need memory */ | |
3966 | for (i = 0; i < _RLIMIT_MAX; i++) | |
3967 | if (u->manager->rlimit[i] && !ec->rlimit[i]) { | |
3968 | ec->rlimit[i] = newdup(struct rlimit, u->manager->rlimit[i], 1); | |
3969 | if (!ec->rlimit[i]) | |
3970 | return -ENOMEM; | |
3971 | } | |
3972 | ||
463d0d15 | 3973 | if (MANAGER_IS_USER(u->manager) && |
598459ce LP |
3974 | !ec->working_directory) { |
3975 | ||
3976 | r = get_home_dir(&ec->working_directory); | |
3977 | if (r < 0) | |
3978 | return r; | |
4c08c824 LP |
3979 | |
3980 | /* Allow user services to run, even if the | |
3981 | * home directory is missing */ | |
3982 | ec->working_directory_missing_ok = true; | |
cba6e062 LP |
3983 | } |
3984 | ||
598459ce | 3985 | if (ec->private_devices) |
2cd0a735 | 3986 | ec->capability_bounding_set &= ~((UINT64_C(1) << CAP_MKNOD) | (UINT64_C(1) << CAP_SYS_RAWIO)); |
502d704e DH |
3987 | |
3988 | if (ec->protect_kernel_modules) | |
3989 | ec->capability_bounding_set &= ~(UINT64_C(1) << CAP_SYS_MODULE); | |
29206d46 LP |
3990 | |
3991 | if (ec->dynamic_user) { | |
3992 | if (!ec->user) { | |
3993 | r = user_from_unit_name(u, &ec->user); | |
3994 | if (r < 0) | |
3995 | return r; | |
3996 | } | |
3997 | ||
3998 | if (!ec->group) { | |
3999 | ec->group = strdup(ec->user); | |
4000 | if (!ec->group) | |
4001 | return -ENOMEM; | |
4002 | } | |
4003 | ||
63bb64a0 LP |
4004 | /* If the dynamic user option is on, let's make sure that the unit can't leave its UID/GID |
4005 | * around in the file system or on IPC objects. Hence enforce a strict sandbox. */ | |
4006 | ||
29206d46 | 4007 | ec->private_tmp = true; |
00d9ef85 | 4008 | ec->remove_ipc = true; |
63bb64a0 LP |
4009 | ec->protect_system = PROTECT_SYSTEM_STRICT; |
4010 | if (ec->protect_home == PROTECT_HOME_NO) | |
4011 | ec->protect_home = PROTECT_HOME_READ_ONLY; | |
29206d46 | 4012 | } |
cba6e062 LP |
4013 | } |
4014 | ||
598459ce LP |
4015 | cc = unit_get_cgroup_context(u); |
4016 | if (cc) { | |
f513e420 | 4017 | |
598459ce LP |
4018 | if (ec && |
4019 | ec->private_devices && | |
4020 | cc->device_policy == CGROUP_AUTO) | |
4021 | cc->device_policy = CGROUP_CLOSED; | |
4022 | } | |
f1660f96 | 4023 | |
cba6e062 | 4024 | return 0; |
e06c73cc LP |
4025 | } |
4026 | ||
3ef63c31 LP |
4027 | ExecContext *unit_get_exec_context(Unit *u) { |
4028 | size_t offset; | |
4029 | assert(u); | |
4030 | ||
598459ce LP |
4031 | if (u->type < 0) |
4032 | return NULL; | |
4033 | ||
3ef63c31 LP |
4034 | offset = UNIT_VTABLE(u)->exec_context_offset; |
4035 | if (offset <= 0) | |
4036 | return NULL; | |
4037 | ||
4038 | return (ExecContext*) ((uint8_t*) u + offset); | |
4039 | } | |
4040 | ||
718db961 LP |
4041 | KillContext *unit_get_kill_context(Unit *u) { |
4042 | size_t offset; | |
4043 | assert(u); | |
4044 | ||
598459ce LP |
4045 | if (u->type < 0) |
4046 | return NULL; | |
4047 | ||
718db961 LP |
4048 | offset = UNIT_VTABLE(u)->kill_context_offset; |
4049 | if (offset <= 0) | |
4050 | return NULL; | |
4051 | ||
4052 | return (KillContext*) ((uint8_t*) u + offset); | |
4053 | } | |
4054 | ||
4ad49000 LP |
4055 | CGroupContext *unit_get_cgroup_context(Unit *u) { |
4056 | size_t offset; | |
4057 | ||
598459ce LP |
4058 | if (u->type < 0) |
4059 | return NULL; | |
4060 | ||
4ad49000 LP |
4061 | offset = UNIT_VTABLE(u)->cgroup_context_offset; |
4062 | if (offset <= 0) | |
4063 | return NULL; | |
4064 | ||
4065 | return (CGroupContext*) ((uint8_t*) u + offset); | |
4066 | } | |
4067 | ||
613b411c LP |
4068 | ExecRuntime *unit_get_exec_runtime(Unit *u) { |
4069 | size_t offset; | |
4070 | ||
598459ce LP |
4071 | if (u->type < 0) |
4072 | return NULL; | |
4073 | ||
613b411c LP |
4074 | offset = UNIT_VTABLE(u)->exec_runtime_offset; |
4075 | if (offset <= 0) | |
4076 | return NULL; | |
4077 | ||
4078 | return *(ExecRuntime**) ((uint8_t*) u + offset); | |
4079 | } | |
4080 | ||
39591351 | 4081 | static const char* unit_drop_in_dir(Unit *u, UnitSetPropertiesMode mode) { |
3f5e8115 LP |
4082 | assert(u); |
4083 | ||
4f4afc88 LP |
4084 | if (!IN_SET(mode, UNIT_RUNTIME, UNIT_PERSISTENT)) |
4085 | return NULL; | |
4086 | ||
39591351 LP |
4087 | if (u->transient) /* Redirect drop-ins for transient units always into the transient directory. */ |
4088 | return u->manager->lookup_paths.transient; | |
26d04f86 | 4089 | |
39591351 | 4090 | if (mode == UNIT_RUNTIME) |
4f4afc88 | 4091 | return u->manager->lookup_paths.runtime_control; |
3f5e8115 | 4092 | |
39591351 | 4093 | if (mode == UNIT_PERSISTENT) |
4f4afc88 | 4094 | return u->manager->lookup_paths.persistent_control; |
26d04f86 | 4095 | |
39591351 | 4096 | return NULL; |
71645aca LP |
4097 | } |
4098 | ||
8e2af478 | 4099 | int unit_write_drop_in(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data) { |
39591351 | 4100 | _cleanup_free_ char *p = NULL, *q = NULL; |
2a9a6f8a | 4101 | const char *dir, *wrapped; |
26d04f86 | 4102 | int r; |
71645aca LP |
4103 | |
4104 | assert(u); | |
4105 | ||
4f4afc88 LP |
4106 | if (u->transient_file) { |
4107 | /* When this is a transient unit file in creation, then let's not create a new drop-in but instead | |
4108 | * write to the transient unit file. */ | |
4109 | fputs(data, u->transient_file); | |
fc40065b | 4110 | fputc('\n', u->transient_file); |
4f4afc88 LP |
4111 | return 0; |
4112 | } | |
4113 | ||
6d235724 | 4114 | if (!IN_SET(mode, UNIT_PERSISTENT, UNIT_RUNTIME)) |
8e2af478 LP |
4115 | return 0; |
4116 | ||
39591351 LP |
4117 | dir = unit_drop_in_dir(u, mode); |
4118 | if (!dir) | |
4119 | return -EINVAL; | |
71645aca | 4120 | |
2a9a6f8a | 4121 | wrapped = strjoina("# This is a drop-in unit file extension, created via \"systemctl set-property\"\n" |
3f71dec5 | 4122 | "# or an equivalent operation. Do not edit.\n", |
2a9a6f8a ZJS |
4123 | data, |
4124 | "\n"); | |
e20b2a86 | 4125 | |
815b09d3 | 4126 | r = drop_in_file(dir, u->id, 50, name, &p, &q); |
adb76a70 WC |
4127 | if (r < 0) |
4128 | return r; | |
4129 | ||
815b09d3 | 4130 | (void) mkdir_p(p, 0755); |
2a9a6f8a | 4131 | r = write_string_file_atomic_label(q, wrapped); |
adb76a70 WC |
4132 | if (r < 0) |
4133 | return r; | |
4134 | ||
815b09d3 | 4135 | r = strv_push(&u->dropin_paths, q); |
adb76a70 WC |
4136 | if (r < 0) |
4137 | return r; | |
815b09d3 | 4138 | q = NULL; |
adb76a70 | 4139 | |
adb76a70 WC |
4140 | strv_uniq(u->dropin_paths); |
4141 | ||
4142 | u->dropin_mtime = now(CLOCK_REALTIME); | |
4143 | ||
4144 | return 0; | |
26d04f86 | 4145 | } |
71645aca | 4146 | |
b9ec9359 LP |
4147 | int unit_write_drop_in_format(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *format, ...) { |
4148 | _cleanup_free_ char *p = NULL; | |
4149 | va_list ap; | |
4150 | int r; | |
4151 | ||
4152 | assert(u); | |
4153 | assert(name); | |
4154 | assert(format); | |
4155 | ||
6d235724 | 4156 | if (!IN_SET(mode, UNIT_PERSISTENT, UNIT_RUNTIME)) |
b9ec9359 LP |
4157 | return 0; |
4158 | ||
4159 | va_start(ap, format); | |
4160 | r = vasprintf(&p, format, ap); | |
4161 | va_end(ap); | |
4162 | ||
4163 | if (r < 0) | |
4164 | return -ENOMEM; | |
4165 | ||
4166 | return unit_write_drop_in(u, mode, name, p); | |
4167 | } | |
4168 | ||
4169 | int unit_write_drop_in_private(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data) { | |
39591351 | 4170 | const char *ndata; |
b42defe3 LP |
4171 | |
4172 | assert(u); | |
4173 | assert(name); | |
4174 | assert(data); | |
4175 | ||
4176 | if (!UNIT_VTABLE(u)->private_section) | |
4177 | return -EINVAL; | |
4178 | ||
6d235724 | 4179 | if (!IN_SET(mode, UNIT_PERSISTENT, UNIT_RUNTIME)) |
b9ec9359 LP |
4180 | return 0; |
4181 | ||
81d62103 | 4182 | ndata = strjoina("[", UNIT_VTABLE(u)->private_section, "]\n", data); |
b42defe3 LP |
4183 | |
4184 | return unit_write_drop_in(u, mode, name, ndata); | |
4185 | } | |
4186 | ||
b9ec9359 LP |
4187 | int unit_write_drop_in_private_format(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *format, ...) { |
4188 | _cleanup_free_ char *p = NULL; | |
4189 | va_list ap; | |
4190 | int r; | |
4191 | ||
4192 | assert(u); | |
4193 | assert(name); | |
4194 | assert(format); | |
4195 | ||
6d235724 | 4196 | if (!IN_SET(mode, UNIT_PERSISTENT, UNIT_RUNTIME)) |
b9ec9359 LP |
4197 | return 0; |
4198 | ||
4199 | va_start(ap, format); | |
4200 | r = vasprintf(&p, format, ap); | |
4201 | va_end(ap); | |
4202 | ||
4203 | if (r < 0) | |
4204 | return -ENOMEM; | |
4205 | ||
4206 | return unit_write_drop_in_private(u, mode, name, p); | |
4207 | } | |
71645aca | 4208 | |
c2756a68 | 4209 | int unit_make_transient(Unit *u) { |
4f4afc88 LP |
4210 | FILE *f; |
4211 | char *path; | |
4212 | ||
c2756a68 LP |
4213 | assert(u); |
4214 | ||
3f5e8115 LP |
4215 | if (!UNIT_VTABLE(u)->can_transient) |
4216 | return -EOPNOTSUPP; | |
4217 | ||
605405c6 | 4218 | path = strjoin(u->manager->lookup_paths.transient, "/", u->id); |
4f4afc88 LP |
4219 | if (!path) |
4220 | return -ENOMEM; | |
4221 | ||
4222 | /* Let's open the file we'll write the transient settings into. This file is kept open as long as we are | |
4223 | * creating the transient, and is closed in unit_load(), as soon as we start loading the file. */ | |
4224 | ||
78e334b5 | 4225 | RUN_WITH_UMASK(0022) { |
4f4afc88 | 4226 | f = fopen(path, "we"); |
78e334b5 ZJS |
4227 | if (!f) { |
4228 | free(path); | |
4229 | return -errno; | |
4230 | } | |
4f4afc88 LP |
4231 | } |
4232 | ||
4233 | if (u->transient_file) | |
4234 | fclose(u->transient_file); | |
4235 | u->transient_file = f; | |
4236 | ||
4237 | free(u->fragment_path); | |
4238 | u->fragment_path = path; | |
7c65093a | 4239 | |
7c65093a LP |
4240 | u->source_path = mfree(u->source_path); |
4241 | u->dropin_paths = strv_free(u->dropin_paths); | |
4242 | u->fragment_mtime = u->source_mtime = u->dropin_mtime = 0; | |
4243 | ||
4f4afc88 LP |
4244 | u->load_state = UNIT_STUB; |
4245 | u->load_error = 0; | |
4246 | u->transient = true; | |
4247 | ||
7c65093a LP |
4248 | unit_add_to_dbus_queue(u); |
4249 | unit_add_to_gc_queue(u); | |
c2756a68 | 4250 | |
4f4afc88 LP |
4251 | fputs("# This is a transient unit file, created programmatically via the systemd API. Do not edit.\n", |
4252 | u->transient_file); | |
4253 | ||
3f5e8115 | 4254 | return 0; |
c2756a68 LP |
4255 | } |
4256 | ||
1d98fef1 LP |
4257 | static void log_kill(pid_t pid, int sig, void *userdata) { |
4258 | _cleanup_free_ char *comm = NULL; | |
4259 | ||
4260 | (void) get_process_comm(pid, &comm); | |
4261 | ||
4262 | /* Don't log about processes marked with brackets, under the assumption that these are temporary processes | |
4263 | only, like for example systemd's own PAM stub process. */ | |
4264 | if (comm && comm[0] == '(') | |
4265 | return; | |
4266 | ||
4267 | log_unit_notice(userdata, | |
4268 | "Killing process " PID_FMT " (%s) with signal SIG%s.", | |
4269 | pid, | |
4270 | strna(comm), | |
4271 | signal_to_string(sig)); | |
4272 | } | |
4273 | ||
4274 | static int operation_to_signal(KillContext *c, KillOperation k) { | |
4275 | assert(c); | |
4276 | ||
4277 | switch (k) { | |
4278 | ||
4279 | case KILL_TERMINATE: | |
4280 | case KILL_TERMINATE_AND_LOG: | |
4281 | return c->kill_signal; | |
4282 | ||
4283 | case KILL_KILL: | |
4284 | return SIGKILL; | |
4285 | ||
4286 | case KILL_ABORT: | |
4287 | return SIGABRT; | |
4288 | ||
4289 | default: | |
4290 | assert_not_reached("KillOperation unknown"); | |
4291 | } | |
4292 | } | |
4293 | ||
cd2086fe LP |
4294 | int unit_kill_context( |
4295 | Unit *u, | |
4296 | KillContext *c, | |
db2cb23b | 4297 | KillOperation k, |
cd2086fe LP |
4298 | pid_t main_pid, |
4299 | pid_t control_pid, | |
4300 | bool main_pid_alien) { | |
4301 | ||
1d98fef1 | 4302 | bool wait_for_exit = false, send_sighup; |
59ec09a8 | 4303 | cg_kill_log_func_t log_func = NULL; |
b821a397 | 4304 | int sig, r; |
cd2086fe LP |
4305 | |
4306 | assert(u); | |
4307 | assert(c); | |
4308 | ||
59ec09a8 ZJS |
4309 | /* Kill the processes belonging to this unit, in preparation for shutting the unit down. |
4310 | * Returns > 0 if we killed something worth waiting for, 0 otherwise. */ | |
1d98fef1 | 4311 | |
cd2086fe LP |
4312 | if (c->kill_mode == KILL_NONE) |
4313 | return 0; | |
4314 | ||
1d98fef1 LP |
4315 | sig = operation_to_signal(c, k); |
4316 | ||
4317 | send_sighup = | |
4318 | c->send_sighup && | |
4319 | IN_SET(k, KILL_TERMINATE, KILL_TERMINATE_AND_LOG) && | |
4320 | sig != SIGHUP; | |
4321 | ||
59ec09a8 ZJS |
4322 | if (k != KILL_TERMINATE || IN_SET(sig, SIGKILL, SIGABRT)) |
4323 | log_func = log_kill; | |
cd2086fe LP |
4324 | |
4325 | if (main_pid > 0) { | |
1d98fef1 LP |
4326 | if (log_func) |
4327 | log_func(main_pid, sig, u); | |
cd2086fe | 4328 | |
1d98fef1 | 4329 | r = kill_and_sigcont(main_pid, sig); |
cd2086fe LP |
4330 | if (r < 0 && r != -ESRCH) { |
4331 | _cleanup_free_ char *comm = NULL; | |
1d98fef1 | 4332 | (void) get_process_comm(main_pid, &comm); |
cd2086fe | 4333 | |
b821a397 | 4334 | log_unit_warning_errno(u, r, "Failed to kill main process " PID_FMT " (%s), ignoring: %m", main_pid, strna(comm)); |
82659fd7 | 4335 | } else { |
bc6aed7b LP |
4336 | if (!main_pid_alien) |
4337 | wait_for_exit = true; | |
82659fd7 | 4338 | |
1d98fef1 | 4339 | if (r != -ESRCH && send_sighup) |
d0667321 | 4340 | (void) kill(main_pid, SIGHUP); |
82659fd7 | 4341 | } |
cd2086fe LP |
4342 | } |
4343 | ||
4344 | if (control_pid > 0) { | |
1d98fef1 LP |
4345 | if (log_func) |
4346 | log_func(control_pid, sig, u); | |
cd2086fe | 4347 | |
1d98fef1 | 4348 | r = kill_and_sigcont(control_pid, sig); |
cd2086fe LP |
4349 | if (r < 0 && r != -ESRCH) { |
4350 | _cleanup_free_ char *comm = NULL; | |
1d98fef1 | 4351 | (void) get_process_comm(control_pid, &comm); |
cd2086fe | 4352 | |
b821a397 | 4353 | log_unit_warning_errno(u, r, "Failed to kill control process " PID_FMT " (%s), ignoring: %m", control_pid, strna(comm)); |
82659fd7 | 4354 | } else { |
cd2086fe | 4355 | wait_for_exit = true; |
82659fd7 | 4356 | |
1d98fef1 | 4357 | if (r != -ESRCH && send_sighup) |
d0667321 | 4358 | (void) kill(control_pid, SIGHUP); |
82659fd7 | 4359 | } |
cd2086fe LP |
4360 | } |
4361 | ||
b821a397 LP |
4362 | if (u->cgroup_path && |
4363 | (c->kill_mode == KILL_CONTROL_GROUP || (c->kill_mode == KILL_MIXED && k == KILL_KILL))) { | |
cd2086fe LP |
4364 | _cleanup_set_free_ Set *pid_set = NULL; |
4365 | ||
82659fd7 LP |
4366 | /* Exclude the main/control pids from being killed via the cgroup */ |
4367 | pid_set = unit_pid_set(main_pid, control_pid); | |
cd2086fe LP |
4368 | if (!pid_set) |
4369 | return -ENOMEM; | |
4370 | ||
1d98fef1 LP |
4371 | r = cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, |
4372 | sig, | |
4373 | CGROUP_SIGCONT|CGROUP_IGNORE_SELF, | |
4374 | pid_set, | |
4375 | log_func, u); | |
cd2086fe | 4376 | if (r < 0) { |
4c701096 | 4377 | if (!IN_SET(r, -EAGAIN, -ESRCH, -ENOENT)) |
b821a397 LP |
4378 | log_unit_warning_errno(u, r, "Failed to kill control group %s, ignoring: %m", u->cgroup_path); |
4379 | ||
82659fd7 | 4380 | } else if (r > 0) { |
bc6aed7b | 4381 | |
efdb0237 LP |
4382 | /* FIXME: For now, on the legacy hierarchy, we |
4383 | * will not wait for the cgroup members to die | |
4384 | * if we are running in a container or if this | |
4385 | * is a delegation unit, simply because cgroup | |
4386 | * notification is unreliable in these | |
4387 | * cases. It doesn't work at all in | |
4388 | * containers, and outside of containers it | |
4389 | * can be confused easily by left-over | |
ccddd104 | 4390 | * directories in the cgroup — which however |
efdb0237 LP |
4391 | * should not exist in non-delegated units. On |
4392 | * the unified hierarchy that's different, | |
4393 | * there we get proper events. Hence rely on | |
13e785f7 | 4394 | * them. */ |
efdb0237 | 4395 | |
c22800e4 | 4396 | if (cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER) > 0 || |
2e4025c0 | 4397 | (detect_container() == 0 && !UNIT_CGROUP_BOOL(u, delegate))) |
e9db43d5 | 4398 | wait_for_exit = true; |
58ea275a | 4399 | |
1d98fef1 | 4400 | if (send_sighup) { |
82659fd7 LP |
4401 | set_free(pid_set); |
4402 | ||
4403 | pid_set = unit_pid_set(main_pid, control_pid); | |
4404 | if (!pid_set) | |
4405 | return -ENOMEM; | |
4406 | ||
1d98fef1 LP |
4407 | cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, |
4408 | SIGHUP, | |
4409 | CGROUP_IGNORE_SELF, | |
4410 | pid_set, | |
4411 | NULL, NULL); | |
82659fd7 LP |
4412 | } |
4413 | } | |
cd2086fe LP |
4414 | } |
4415 | ||
4416 | return wait_for_exit; | |
4417 | } | |
4418 | ||
eef85c4a | 4419 | int unit_require_mounts_for(Unit *u, const char *path, UnitDependencyMask mask) { |
a57f7e2c | 4420 | char prefix[strlen(path) + 1], *p; |
eef85c4a | 4421 | UnitDependencyInfo di; |
a57f7e2c LP |
4422 | int r; |
4423 | ||
4424 | assert(u); | |
4425 | assert(path); | |
4426 | ||
eef85c4a LP |
4427 | /* Registers a unit for requiring a certain path and all its prefixes. We keep a hashtable of these paths in |
4428 | * the unit (from the path to the UnitDependencyInfo structure indicating how to the dependency came to | |
4429 | * be). However, we build a prefix table for all possible prefixes so that new appearing mount units can easily | |
4430 | * determine which units to make themselves a dependency of. */ | |
a57f7e2c | 4431 | |
70b64bd3 ZJS |
4432 | if (!path_is_absolute(path)) |
4433 | return -EINVAL; | |
4434 | ||
eef85c4a LP |
4435 | r = hashmap_ensure_allocated(&u->requires_mounts_for, &string_hash_ops); |
4436 | if (r < 0) | |
4437 | return r; | |
4438 | ||
a57f7e2c LP |
4439 | p = strdup(path); |
4440 | if (!p) | |
4441 | return -ENOMEM; | |
4442 | ||
4443 | path_kill_slashes(p); | |
4444 | ||
a57f7e2c LP |
4445 | if (!path_is_safe(p)) { |
4446 | free(p); | |
4447 | return -EPERM; | |
4448 | } | |
4449 | ||
eef85c4a | 4450 | if (hashmap_contains(u->requires_mounts_for, p)) { |
a57f7e2c LP |
4451 | free(p); |
4452 | return 0; | |
4453 | } | |
4454 | ||
eef85c4a LP |
4455 | di = (UnitDependencyInfo) { |
4456 | .origin_mask = mask | |
4457 | }; | |
4458 | ||
4459 | r = hashmap_put(u->requires_mounts_for, p, di.data); | |
4460 | if (r < 0) { | |
4461 | free(p); | |
a57f7e2c | 4462 | return r; |
eef85c4a | 4463 | } |
a57f7e2c LP |
4464 | |
4465 | PATH_FOREACH_PREFIX_MORE(prefix, p) { | |
4466 | Set *x; | |
4467 | ||
4468 | x = hashmap_get(u->manager->units_requiring_mounts_for, prefix); | |
4469 | if (!x) { | |
4470 | char *q; | |
4471 | ||
742f41ad LP |
4472 | r = hashmap_ensure_allocated(&u->manager->units_requiring_mounts_for, &string_hash_ops); |
4473 | if (r < 0) | |
4474 | return r; | |
a57f7e2c LP |
4475 | |
4476 | q = strdup(prefix); | |
4477 | if (!q) | |
4478 | return -ENOMEM; | |
4479 | ||
d5099efc | 4480 | x = set_new(NULL); |
a57f7e2c LP |
4481 | if (!x) { |
4482 | free(q); | |
4483 | return -ENOMEM; | |
4484 | } | |
4485 | ||
4486 | r = hashmap_put(u->manager->units_requiring_mounts_for, q, x); | |
4487 | if (r < 0) { | |
4488 | free(q); | |
4489 | set_free(x); | |
4490 | return r; | |
4491 | } | |
4492 | } | |
4493 | ||
4494 | r = set_put(x, u); | |
4495 | if (r < 0) | |
4496 | return r; | |
4497 | } | |
4498 | ||
4499 | return 0; | |
4500 | } | |
4501 | ||
613b411c LP |
4502 | int unit_setup_exec_runtime(Unit *u) { |
4503 | ExecRuntime **rt; | |
4504 | size_t offset; | |
613b411c | 4505 | Unit *other; |
eef85c4a LP |
4506 | Iterator i; |
4507 | void *v; | |
613b411c LP |
4508 | |
4509 | offset = UNIT_VTABLE(u)->exec_runtime_offset; | |
4510 | assert(offset > 0); | |
4511 | ||
06b643e7 | 4512 | /* Check if there already is an ExecRuntime for this unit? */ |
613b411c LP |
4513 | rt = (ExecRuntime**) ((uint8_t*) u + offset); |
4514 | if (*rt) | |
4515 | return 0; | |
4516 | ||
4517 | /* Try to get it from somebody else */ | |
eef85c4a | 4518 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_JOINS_NAMESPACE_OF], i) { |
613b411c LP |
4519 | |
4520 | *rt = unit_get_exec_runtime(other); | |
4521 | if (*rt) { | |
4522 | exec_runtime_ref(*rt); | |
4523 | return 0; | |
4524 | } | |
4525 | } | |
4526 | ||
4527 | return exec_runtime_make(rt, unit_get_exec_context(u), u->id); | |
4528 | } | |
4529 | ||
29206d46 LP |
4530 | int unit_setup_dynamic_creds(Unit *u) { |
4531 | ExecContext *ec; | |
4532 | DynamicCreds *dcreds; | |
4533 | size_t offset; | |
4534 | ||
4535 | assert(u); | |
4536 | ||
4537 | offset = UNIT_VTABLE(u)->dynamic_creds_offset; | |
4538 | assert(offset > 0); | |
4539 | dcreds = (DynamicCreds*) ((uint8_t*) u + offset); | |
4540 | ||
4541 | ec = unit_get_exec_context(u); | |
4542 | assert(ec); | |
4543 | ||
4544 | if (!ec->dynamic_user) | |
4545 | return 0; | |
4546 | ||
4547 | return dynamic_creds_acquire(dcreds, u->manager, ec->user, ec->group); | |
4548 | } | |
4549 | ||
1c2e9646 LP |
4550 | bool unit_type_supported(UnitType t) { |
4551 | if (_unlikely_(t < 0)) | |
4552 | return false; | |
4553 | if (_unlikely_(t >= _UNIT_TYPE_MAX)) | |
4554 | return false; | |
4555 | ||
4556 | if (!unit_vtable[t]->supported) | |
4557 | return true; | |
4558 | ||
4559 | return unit_vtable[t]->supported(); | |
4560 | } | |
4561 | ||
8b4305c7 LP |
4562 | void unit_warn_if_dir_nonempty(Unit *u, const char* where) { |
4563 | int r; | |
4564 | ||
4565 | assert(u); | |
4566 | assert(where); | |
4567 | ||
4568 | r = dir_is_empty(where); | |
4569 | if (r > 0) | |
4570 | return; | |
4571 | if (r < 0) { | |
4572 | log_unit_warning_errno(u, r, "Failed to check directory %s: %m", where); | |
4573 | return; | |
4574 | } | |
4575 | ||
4576 | log_struct(LOG_NOTICE, | |
2b044526 | 4577 | "MESSAGE_ID=" SD_MESSAGE_OVERMOUNTING_STR, |
8b4305c7 | 4578 | LOG_UNIT_ID(u), |
f1c50bec | 4579 | LOG_UNIT_INVOCATION_ID(u), |
8b4305c7 LP |
4580 | LOG_UNIT_MESSAGE(u, "Directory %s to mount over is not empty, mounting anyway.", where), |
4581 | "WHERE=%s", where, | |
4582 | NULL); | |
4583 | } | |
4584 | ||
4585 | int unit_fail_if_symlink(Unit *u, const char* where) { | |
4586 | int r; | |
4587 | ||
4588 | assert(u); | |
4589 | assert(where); | |
4590 | ||
4591 | r = is_symlink(where); | |
4592 | if (r < 0) { | |
4593 | log_unit_debug_errno(u, r, "Failed to check symlink %s, ignoring: %m", where); | |
4594 | return 0; | |
4595 | } | |
4596 | if (r == 0) | |
4597 | return 0; | |
4598 | ||
4599 | log_struct(LOG_ERR, | |
2b044526 | 4600 | "MESSAGE_ID=" SD_MESSAGE_OVERMOUNTING_STR, |
8b4305c7 | 4601 | LOG_UNIT_ID(u), |
f1c50bec | 4602 | LOG_UNIT_INVOCATION_ID(u), |
8b4305c7 LP |
4603 | LOG_UNIT_MESSAGE(u, "Mount on symlink %s not allowed.", where), |
4604 | "WHERE=%s", where, | |
4605 | NULL); | |
4606 | ||
4607 | return -ELOOP; | |
4608 | } | |
0f13f3bd LP |
4609 | |
4610 | bool unit_is_pristine(Unit *u) { | |
4611 | assert(u); | |
4612 | ||
7c65093a | 4613 | /* Check if the unit already exists or is already around, |
0f13f3bd LP |
4614 | * in a number of different ways. Note that to cater for unit |
4615 | * types such as slice, we are generally fine with units that | |
61233823 | 4616 | * are marked UNIT_LOADED even though nothing was |
0f13f3bd LP |
4617 | * actually loaded, as those unit types don't require a file |
4618 | * on disk to validly load. */ | |
4619 | ||
4620 | return !(!IN_SET(u->load_state, UNIT_NOT_FOUND, UNIT_LOADED) || | |
4621 | u->fragment_path || | |
4622 | u->source_path || | |
4623 | !strv_isempty(u->dropin_paths) || | |
0f13f3bd LP |
4624 | u->job || |
4625 | u->merged_into); | |
4626 | } | |
291d565a LP |
4627 | |
4628 | pid_t unit_control_pid(Unit *u) { | |
4629 | assert(u); | |
4630 | ||
4631 | if (UNIT_VTABLE(u)->control_pid) | |
4632 | return UNIT_VTABLE(u)->control_pid(u); | |
4633 | ||
4634 | return 0; | |
4635 | } | |
4636 | ||
4637 | pid_t unit_main_pid(Unit *u) { | |
4638 | assert(u); | |
4639 | ||
4640 | if (UNIT_VTABLE(u)->main_pid) | |
4641 | return UNIT_VTABLE(u)->main_pid(u); | |
4642 | ||
4643 | return 0; | |
4644 | } | |
00d9ef85 LP |
4645 | |
4646 | static void unit_unref_uid_internal( | |
4647 | Unit *u, | |
4648 | uid_t *ref_uid, | |
4649 | bool destroy_now, | |
4650 | void (*_manager_unref_uid)(Manager *m, uid_t uid, bool destroy_now)) { | |
4651 | ||
4652 | assert(u); | |
4653 | assert(ref_uid); | |
4654 | assert(_manager_unref_uid); | |
4655 | ||
4656 | /* Generic implementation of both unit_unref_uid() and unit_unref_gid(), under the assumption that uid_t and | |
4657 | * gid_t are actually the same time, with the same validity rules. | |
4658 | * | |
4659 | * Drops a reference to UID/GID from a unit. */ | |
4660 | ||
4661 | assert_cc(sizeof(uid_t) == sizeof(gid_t)); | |
4662 | assert_cc(UID_INVALID == (uid_t) GID_INVALID); | |
4663 | ||
4664 | if (!uid_is_valid(*ref_uid)) | |
4665 | return; | |
4666 | ||
4667 | _manager_unref_uid(u->manager, *ref_uid, destroy_now); | |
4668 | *ref_uid = UID_INVALID; | |
4669 | } | |
4670 | ||
4671 | void unit_unref_uid(Unit *u, bool destroy_now) { | |
4672 | unit_unref_uid_internal(u, &u->ref_uid, destroy_now, manager_unref_uid); | |
4673 | } | |
4674 | ||
4675 | void unit_unref_gid(Unit *u, bool destroy_now) { | |
4676 | unit_unref_uid_internal(u, (uid_t*) &u->ref_gid, destroy_now, manager_unref_gid); | |
4677 | } | |
4678 | ||
4679 | static int unit_ref_uid_internal( | |
4680 | Unit *u, | |
4681 | uid_t *ref_uid, | |
4682 | uid_t uid, | |
4683 | bool clean_ipc, | |
4684 | int (*_manager_ref_uid)(Manager *m, uid_t uid, bool clean_ipc)) { | |
4685 | ||
4686 | int r; | |
4687 | ||
4688 | assert(u); | |
4689 | assert(ref_uid); | |
4690 | assert(uid_is_valid(uid)); | |
4691 | assert(_manager_ref_uid); | |
4692 | ||
4693 | /* Generic implementation of both unit_ref_uid() and unit_ref_guid(), under the assumption that uid_t and gid_t | |
4694 | * are actually the same type, and have the same validity rules. | |
4695 | * | |
4696 | * Adds a reference on a specific UID/GID to this unit. Each unit referencing the same UID/GID maintains a | |
4697 | * reference so that we can destroy the UID/GID's IPC resources as soon as this is requested and the counter | |
4698 | * drops to zero. */ | |
4699 | ||
4700 | assert_cc(sizeof(uid_t) == sizeof(gid_t)); | |
4701 | assert_cc(UID_INVALID == (uid_t) GID_INVALID); | |
4702 | ||
4703 | if (*ref_uid == uid) | |
4704 | return 0; | |
4705 | ||
4706 | if (uid_is_valid(*ref_uid)) /* Already set? */ | |
4707 | return -EBUSY; | |
4708 | ||
4709 | r = _manager_ref_uid(u->manager, uid, clean_ipc); | |
4710 | if (r < 0) | |
4711 | return r; | |
4712 | ||
4713 | *ref_uid = uid; | |
4714 | return 1; | |
4715 | } | |
4716 | ||
4717 | int unit_ref_uid(Unit *u, uid_t uid, bool clean_ipc) { | |
4718 | return unit_ref_uid_internal(u, &u->ref_uid, uid, clean_ipc, manager_ref_uid); | |
4719 | } | |
4720 | ||
4721 | int unit_ref_gid(Unit *u, gid_t gid, bool clean_ipc) { | |
4722 | return unit_ref_uid_internal(u, (uid_t*) &u->ref_gid, (uid_t) gid, clean_ipc, manager_ref_gid); | |
4723 | } | |
4724 | ||
4725 | static int unit_ref_uid_gid_internal(Unit *u, uid_t uid, gid_t gid, bool clean_ipc) { | |
4726 | int r = 0, q = 0; | |
4727 | ||
4728 | assert(u); | |
4729 | ||
4730 | /* Reference both a UID and a GID in one go. Either references both, or neither. */ | |
4731 | ||
4732 | if (uid_is_valid(uid)) { | |
4733 | r = unit_ref_uid(u, uid, clean_ipc); | |
4734 | if (r < 0) | |
4735 | return r; | |
4736 | } | |
4737 | ||
4738 | if (gid_is_valid(gid)) { | |
4739 | q = unit_ref_gid(u, gid, clean_ipc); | |
4740 | if (q < 0) { | |
4741 | if (r > 0) | |
4742 | unit_unref_uid(u, false); | |
4743 | ||
4744 | return q; | |
4745 | } | |
4746 | } | |
4747 | ||
4748 | return r > 0 || q > 0; | |
4749 | } | |
4750 | ||
4751 | int unit_ref_uid_gid(Unit *u, uid_t uid, gid_t gid) { | |
4752 | ExecContext *c; | |
4753 | int r; | |
4754 | ||
4755 | assert(u); | |
4756 | ||
4757 | c = unit_get_exec_context(u); | |
4758 | ||
4759 | r = unit_ref_uid_gid_internal(u, uid, gid, c ? c->remove_ipc : false); | |
4760 | if (r < 0) | |
4761 | return log_unit_warning_errno(u, r, "Couldn't add UID/GID reference to unit, proceeding without: %m"); | |
4762 | ||
4763 | return r; | |
4764 | } | |
4765 | ||
4766 | void unit_unref_uid_gid(Unit *u, bool destroy_now) { | |
4767 | assert(u); | |
4768 | ||
4769 | unit_unref_uid(u, destroy_now); | |
4770 | unit_unref_gid(u, destroy_now); | |
4771 | } | |
4772 | ||
4773 | void unit_notify_user_lookup(Unit *u, uid_t uid, gid_t gid) { | |
4774 | int r; | |
4775 | ||
4776 | assert(u); | |
4777 | ||
4778 | /* This is invoked whenever one of the forked off processes let's us know the UID/GID its user name/group names | |
4779 | * resolved to. We keep track of which UID/GID is currently assigned in order to be able to destroy its IPC | |
4780 | * objects when no service references the UID/GID anymore. */ | |
4781 | ||
4782 | r = unit_ref_uid_gid(u, uid, gid); | |
4783 | if (r > 0) | |
4784 | bus_unit_send_change_signal(u); | |
4785 | } | |
4b58153d LP |
4786 | |
4787 | int unit_set_invocation_id(Unit *u, sd_id128_t id) { | |
4788 | int r; | |
4789 | ||
4790 | assert(u); | |
4791 | ||
4792 | /* Set the invocation ID for this unit. If we cannot, this will not roll back, but reset the whole thing. */ | |
4793 | ||
4794 | if (sd_id128_equal(u->invocation_id, id)) | |
4795 | return 0; | |
4796 | ||
4797 | if (!sd_id128_is_null(u->invocation_id)) | |
4798 | (void) hashmap_remove_value(u->manager->units_by_invocation_id, &u->invocation_id, u); | |
4799 | ||
4800 | if (sd_id128_is_null(id)) { | |
4801 | r = 0; | |
4802 | goto reset; | |
4803 | } | |
4804 | ||
4805 | r = hashmap_ensure_allocated(&u->manager->units_by_invocation_id, &id128_hash_ops); | |
4806 | if (r < 0) | |
4807 | goto reset; | |
4808 | ||
4809 | u->invocation_id = id; | |
4810 | sd_id128_to_string(id, u->invocation_id_string); | |
4811 | ||
4812 | r = hashmap_put(u->manager->units_by_invocation_id, &u->invocation_id, u); | |
4813 | if (r < 0) | |
4814 | goto reset; | |
4815 | ||
4816 | return 0; | |
4817 | ||
4818 | reset: | |
4819 | u->invocation_id = SD_ID128_NULL; | |
4820 | u->invocation_id_string[0] = 0; | |
4821 | return r; | |
4822 | } | |
4823 | ||
4824 | int unit_acquire_invocation_id(Unit *u) { | |
4825 | sd_id128_t id; | |
4826 | int r; | |
4827 | ||
4828 | assert(u); | |
4829 | ||
4830 | r = sd_id128_randomize(&id); | |
4831 | if (r < 0) | |
4832 | return log_unit_error_errno(u, r, "Failed to generate invocation ID for unit: %m"); | |
4833 | ||
4834 | r = unit_set_invocation_id(u, id); | |
4835 | if (r < 0) | |
4836 | return log_unit_error_errno(u, r, "Failed to set invocation ID for unit: %m"); | |
4837 | ||
4838 | return 0; | |
4839 | } | |
f0d47797 | 4840 | |
7960b0c7 LP |
4841 | void unit_set_exec_params(Unit *u, ExecParameters *p) { |
4842 | assert(u); | |
4843 | assert(p); | |
f0d47797 | 4844 | |
7960b0c7 | 4845 | p->cgroup_path = u->cgroup_path; |
2e4025c0 | 4846 | SET_FLAG(p->flags, EXEC_CGROUP_DELEGATE, UNIT_CGROUP_BOOL(u, delegate)); |
f0d47797 | 4847 | } |
a79279c7 LP |
4848 | |
4849 | int unit_fork_helper_process(Unit *u, pid_t *ret) { | |
4850 | pid_t pid; | |
4851 | int r; | |
4852 | ||
4853 | assert(u); | |
4854 | assert(ret); | |
4855 | ||
4856 | /* Forks off a helper process and makes sure it is a member of the unit's cgroup. Returns == 0 in the child, | |
4857 | * and > 0 in the parent. The pid parameter is always filled in with the child's PID. */ | |
4858 | ||
4859 | (void) unit_realize_cgroup(u); | |
4860 | ||
4861 | pid = fork(); | |
4862 | if (pid < 0) | |
4863 | return -errno; | |
4864 | ||
4865 | if (pid == 0) { | |
4866 | ||
4867 | (void) default_signals(SIGNALS_CRASH_HANDLER, SIGNALS_IGNORE, -1); | |
4868 | (void) ignore_signals(SIGPIPE, -1); | |
4869 | ||
4870 | log_close(); | |
4871 | log_open(); | |
4872 | ||
4873 | if (u->cgroup_path) { | |
4874 | r = cg_attach_everywhere(u->manager->cgroup_supported, u->cgroup_path, 0, NULL, NULL); | |
4875 | if (r < 0) { | |
4876 | log_unit_error_errno(u, r, "Failed to join unit cgroup %s: %m", u->cgroup_path); | |
4877 | _exit(EXIT_CGROUP); | |
4878 | } | |
4879 | } | |
4880 | ||
4881 | *ret = getpid_cached(); | |
4882 | return 0; | |
4883 | } | |
4884 | ||
4885 | *ret = pid; | |
4886 | return 1; | |
4887 | } | |
c999cf38 LP |
4888 | |
4889 | static void unit_update_dependency_mask(Unit *u, UnitDependency d, Unit *other, UnitDependencyInfo di) { | |
4890 | assert(u); | |
4891 | assert(d >= 0); | |
4892 | assert(d < _UNIT_DEPENDENCY_MAX); | |
4893 | assert(other); | |
4894 | ||
4895 | if (di.origin_mask == 0 && di.destination_mask == 0) { | |
4896 | /* No bit set anymore, let's drop the whole entry */ | |
4897 | assert_se(hashmap_remove(u->dependencies[d], other)); | |
4898 | log_unit_debug(u, "%s lost dependency %s=%s", u->id, unit_dependency_to_string(d), other->id); | |
4899 | } else | |
4900 | /* Mask was reduced, let's update the entry */ | |
4901 | assert_se(hashmap_update(u->dependencies[d], other, di.data) == 0); | |
4902 | } | |
4903 | ||
4904 | void unit_remove_dependencies(Unit *u, UnitDependencyMask mask) { | |
4905 | UnitDependency d; | |
4906 | ||
4907 | assert(u); | |
4908 | ||
4909 | /* Removes all dependencies u has on other units marked for ownership by 'mask'. */ | |
4910 | ||
4911 | if (mask == 0) | |
4912 | return; | |
4913 | ||
4914 | for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) { | |
4915 | bool done; | |
4916 | ||
4917 | do { | |
4918 | UnitDependencyInfo di; | |
4919 | Unit *other; | |
4920 | Iterator i; | |
4921 | ||
4922 | done = true; | |
4923 | ||
4924 | HASHMAP_FOREACH_KEY(di.data, other, u->dependencies[d], i) { | |
4925 | UnitDependency q; | |
4926 | ||
4927 | if ((di.origin_mask & ~mask) == di.origin_mask) | |
4928 | continue; | |
4929 | di.origin_mask &= ~mask; | |
4930 | unit_update_dependency_mask(u, d, other, di); | |
4931 | ||
4932 | /* We updated the dependency from our unit to the other unit now. But most dependencies | |
4933 | * imply a reverse dependency. Hence, let's delete that one too. For that we go through | |
4934 | * all dependency types on the other unit and delete all those which point to us and | |
4935 | * have the right mask set. */ | |
4936 | ||
4937 | for (q = 0; q < _UNIT_DEPENDENCY_MAX; q++) { | |
4938 | UnitDependencyInfo dj; | |
4939 | ||
4940 | dj.data = hashmap_get(other->dependencies[q], u); | |
4941 | if ((dj.destination_mask & ~mask) == dj.destination_mask) | |
4942 | continue; | |
4943 | dj.destination_mask &= ~mask; | |
4944 | ||
4945 | unit_update_dependency_mask(other, q, u, dj); | |
4946 | } | |
4947 | ||
4948 | unit_add_to_gc_queue(other); | |
4949 | ||
4950 | done = false; | |
4951 | break; | |
4952 | } | |
4953 | ||
4954 | } while (!done); | |
4955 | } | |
4956 | } | |
d3070fbd LP |
4957 | |
4958 | static int unit_export_invocation_id(Unit *u) { | |
4959 | const char *p; | |
4960 | int r; | |
4961 | ||
4962 | assert(u); | |
4963 | ||
4964 | if (u->exported_invocation_id) | |
4965 | return 0; | |
4966 | ||
4967 | if (sd_id128_is_null(u->invocation_id)) | |
4968 | return 0; | |
4969 | ||
4970 | p = strjoina("/run/systemd/units/invocation:", u->id); | |
4971 | r = symlink_atomic(u->invocation_id_string, p); | |
4972 | if (r < 0) | |
4973 | return log_unit_debug_errno(u, r, "Failed to create invocation ID symlink %s: %m", p); | |
4974 | ||
4975 | u->exported_invocation_id = true; | |
4976 | return 0; | |
4977 | } | |
4978 | ||
4979 | static int unit_export_log_level_max(Unit *u, const ExecContext *c) { | |
4980 | const char *p; | |
4981 | char buf[2]; | |
4982 | int r; | |
4983 | ||
4984 | assert(u); | |
4985 | assert(c); | |
4986 | ||
4987 | if (u->exported_log_level_max) | |
4988 | return 0; | |
4989 | ||
4990 | if (c->log_level_max < 0) | |
4991 | return 0; | |
4992 | ||
4993 | assert(c->log_level_max <= 7); | |
4994 | ||
4995 | buf[0] = '0' + c->log_level_max; | |
4996 | buf[1] = 0; | |
4997 | ||
4998 | p = strjoina("/run/systemd/units/log-level-max:", u->id); | |
4999 | r = symlink_atomic(buf, p); | |
5000 | if (r < 0) | |
5001 | return log_unit_debug_errno(u, r, "Failed to create maximum log level symlink %s: %m", p); | |
5002 | ||
5003 | u->exported_log_level_max = true; | |
5004 | return 0; | |
5005 | } | |
5006 | ||
5007 | static int unit_export_log_extra_fields(Unit *u, const ExecContext *c) { | |
5008 | _cleanup_close_ int fd = -1; | |
5009 | struct iovec *iovec; | |
5010 | const char *p; | |
5011 | char *pattern; | |
5012 | le64_t *sizes; | |
5013 | ssize_t n; | |
5014 | size_t i; | |
5015 | int r; | |
5016 | ||
5017 | if (u->exported_log_extra_fields) | |
5018 | return 0; | |
5019 | ||
5020 | if (c->n_log_extra_fields <= 0) | |
5021 | return 0; | |
5022 | ||
5023 | sizes = newa(le64_t, c->n_log_extra_fields); | |
5024 | iovec = newa(struct iovec, c->n_log_extra_fields * 2); | |
5025 | ||
5026 | for (i = 0; i < c->n_log_extra_fields; i++) { | |
5027 | sizes[i] = htole64(c->log_extra_fields[i].iov_len); | |
5028 | ||
5029 | iovec[i*2] = IOVEC_MAKE(sizes + i, sizeof(le64_t)); | |
5030 | iovec[i*2+1] = c->log_extra_fields[i]; | |
5031 | } | |
5032 | ||
5033 | p = strjoina("/run/systemd/units/log-extra-fields:", u->id); | |
5034 | pattern = strjoina(p, ".XXXXXX"); | |
5035 | ||
5036 | fd = mkostemp_safe(pattern); | |
5037 | if (fd < 0) | |
5038 | return log_unit_debug_errno(u, fd, "Failed to create extra fields file %s: %m", p); | |
5039 | ||
5040 | n = writev(fd, iovec, c->n_log_extra_fields*2); | |
5041 | if (n < 0) { | |
5042 | r = log_unit_debug_errno(u, errno, "Failed to write extra fields: %m"); | |
5043 | goto fail; | |
5044 | } | |
5045 | ||
5046 | (void) fchmod(fd, 0644); | |
5047 | ||
5048 | if (rename(pattern, p) < 0) { | |
5049 | r = log_unit_debug_errno(u, errno, "Failed to rename extra fields file: %m"); | |
5050 | goto fail; | |
5051 | } | |
5052 | ||
5053 | u->exported_log_extra_fields = true; | |
5054 | return 0; | |
5055 | ||
5056 | fail: | |
5057 | (void) unlink(pattern); | |
5058 | return r; | |
5059 | } | |
5060 | ||
5061 | void unit_export_state_files(Unit *u) { | |
5062 | const ExecContext *c; | |
5063 | ||
5064 | assert(u); | |
5065 | ||
5066 | if (!u->id) | |
5067 | return; | |
5068 | ||
5069 | if (!MANAGER_IS_SYSTEM(u->manager)) | |
5070 | return; | |
5071 | ||
5072 | /* Exports a couple of unit properties to /run/systemd/units/, so that journald can quickly query this data | |
5073 | * from there. Ideally, journald would use IPC to query this, like everybody else, but that's hard, as long as | |
5074 | * the IPC system itself and PID 1 also log to the journal. | |
5075 | * | |
5076 | * Note that these files really shouldn't be considered API for anyone else, as use a runtime file system as | |
5077 | * IPC replacement is not compatible with today's world of file system namespaces. However, this doesn't really | |
5078 | * apply to communication between the journal and systemd, as we assume that these two daemons live in the same | |
5079 | * namespace at least. | |
5080 | * | |
5081 | * Note that some of the "files" exported here are actually symlinks and not regular files. Symlinks work | |
5082 | * better for storing small bits of data, in particular as we can write them with two system calls, and read | |
5083 | * them with one. */ | |
5084 | ||
5085 | (void) unit_export_invocation_id(u); | |
5086 | ||
5087 | c = unit_get_exec_context(u); | |
5088 | if (c) { | |
5089 | (void) unit_export_log_level_max(u, c); | |
5090 | (void) unit_export_log_extra_fields(u, c); | |
5091 | } | |
5092 | } | |
5093 | ||
5094 | void unit_unlink_state_files(Unit *u) { | |
5095 | const char *p; | |
5096 | ||
5097 | assert(u); | |
5098 | ||
5099 | if (!u->id) | |
5100 | return; | |
5101 | ||
5102 | if (!MANAGER_IS_SYSTEM(u->manager)) | |
5103 | return; | |
5104 | ||
5105 | /* Undoes the effect of unit_export_state() */ | |
5106 | ||
5107 | if (u->exported_invocation_id) { | |
5108 | p = strjoina("/run/systemd/units/invocation:", u->id); | |
5109 | (void) unlink(p); | |
5110 | ||
5111 | u->exported_invocation_id = false; | |
5112 | } | |
5113 | ||
5114 | if (u->exported_log_level_max) { | |
5115 | p = strjoina("/run/systemd/units/log-level-max:", u->id); | |
5116 | (void) unlink(p); | |
5117 | ||
5118 | u->exported_log_level_max = false; | |
5119 | } | |
5120 | ||
5121 | if (u->exported_log_extra_fields) { | |
5122 | p = strjoina("/run/systemd/units/extra-fields:", u->id); | |
5123 | (void) unlink(p); | |
5124 | ||
5125 | u->exported_log_extra_fields = false; | |
5126 | } | |
5127 | } |