]>
Commit | Line | Data |
---|---|---|
6c12b52e LP |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2013 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
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 | |
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 | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public License | |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
18 | ***/ | |
19 | ||
20 | #include <errno.h> | |
6c12b52e LP |
21 | #include <unistd.h> |
22 | ||
b5efdb8a | 23 | #include "alloc-util.h" |
07630cea LP |
24 | #include "dbus-scope.h" |
25 | #include "load-dropin.h" | |
6c12b52e | 26 | #include "log.h" |
b5efdb8a | 27 | #include "scope.h" |
6c12b52e | 28 | #include "special.h" |
8b43440b | 29 | #include "string-table.h" |
07630cea LP |
30 | #include "string-util.h" |
31 | #include "strv.h" | |
6c12b52e | 32 | #include "unit-name.h" |
efdb0237 | 33 | #include "unit.h" |
6c12b52e LP |
34 | |
35 | static const UnitActiveState state_translation_table[_SCOPE_STATE_MAX] = { | |
36 | [SCOPE_DEAD] = UNIT_INACTIVE, | |
37 | [SCOPE_RUNNING] = UNIT_ACTIVE, | |
a911bb9a | 38 | [SCOPE_ABANDONED] = UNIT_ACTIVE, |
6c12b52e LP |
39 | [SCOPE_STOP_SIGTERM] = UNIT_DEACTIVATING, |
40 | [SCOPE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
41 | [SCOPE_FAILED] = UNIT_FAILED | |
42 | }; | |
43 | ||
718db961 LP |
44 | static int scope_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); |
45 | ||
6c12b52e LP |
46 | static void scope_init(Unit *u) { |
47 | Scope *s = SCOPE(u); | |
48 | ||
49 | assert(u); | |
50 | assert(u->load_state == UNIT_STUB); | |
51 | ||
1f19a534 | 52 | s->timeout_stop_usec = u->manager->default_timeout_stop_usec; |
1b4cd0cf | 53 | u->ignore_on_isolate = true; |
6c12b52e LP |
54 | } |
55 | ||
56 | static void scope_done(Unit *u) { | |
57 | Scope *s = SCOPE(u); | |
58 | ||
59 | assert(u); | |
60 | ||
2d4a39e7 LP |
61 | free(s->controller); |
62 | ||
718db961 LP |
63 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
64 | } | |
65 | ||
36c16a7c | 66 | static int scope_arm_timer(Scope *s, usec_t usec) { |
718db961 LP |
67 | int r; |
68 | ||
69 | assert(s); | |
70 | ||
718db961 | 71 | if (s->timer_event_source) { |
36c16a7c | 72 | r = sd_event_source_set_time(s->timer_event_source, usec); |
718db961 LP |
73 | if (r < 0) |
74 | return r; | |
75 | ||
76 | return sd_event_source_set_enabled(s->timer_event_source, SD_EVENT_ONESHOT); | |
77 | } | |
78 | ||
36c16a7c LP |
79 | if (usec == USEC_INFINITY) |
80 | return 0; | |
81 | ||
cbf60d0a | 82 | r = sd_event_add_time( |
6a0f1f6d LP |
83 | UNIT(s)->manager->event, |
84 | &s->timer_event_source, | |
85 | CLOCK_MONOTONIC, | |
36c16a7c | 86 | usec, 0, |
6a0f1f6d | 87 | scope_dispatch_timer, s); |
7dfbe2e3 TG |
88 | if (r < 0) |
89 | return r; | |
90 | ||
91 | (void) sd_event_source_set_description(s->timer_event_source, "scope-timer"); | |
92 | ||
93 | return 0; | |
6c12b52e LP |
94 | } |
95 | ||
96 | static void scope_set_state(Scope *s, ScopeState state) { | |
97 | ScopeState old_state; | |
98 | assert(s); | |
99 | ||
100 | old_state = s->state; | |
101 | s->state = state; | |
102 | ||
a911bb9a | 103 | if (!IN_SET(state, SCOPE_STOP_SIGTERM, SCOPE_STOP_SIGKILL)) |
718db961 | 104 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
6c12b52e | 105 | |
a911bb9a LP |
106 | if (IN_SET(state, SCOPE_DEAD, SCOPE_FAILED)) |
107 | unit_unwatch_all_pids(UNIT(s)); | |
108 | ||
6c12b52e | 109 | if (state != old_state) |
a911bb9a | 110 | log_debug("%s changed %s -> %s", UNIT(s)->id, scope_state_to_string(old_state), scope_state_to_string(state)); |
6c12b52e LP |
111 | |
112 | unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state], true); | |
113 | } | |
114 | ||
115 | static int scope_add_default_dependencies(Scope *s) { | |
116 | int r; | |
117 | ||
118 | assert(s); | |
119 | ||
4c9ea260 LP |
120 | if (!UNIT(s)->default_dependencies) |
121 | return 0; | |
122 | ||
6c12b52e LP |
123 | /* Make sure scopes are unloaded on shutdown */ |
124 | r = unit_add_two_dependencies_by_name( | |
125 | UNIT(s), | |
126 | UNIT_BEFORE, UNIT_CONFLICTS, | |
127 | SPECIAL_SHUTDOWN_TARGET, NULL, true); | |
128 | if (r < 0) | |
129 | return r; | |
130 | ||
131 | return 0; | |
132 | } | |
133 | ||
134 | static int scope_verify(Scope *s) { | |
135 | assert(s); | |
136 | ||
137 | if (UNIT(s)->load_state != UNIT_LOADED) | |
138 | return 0; | |
139 | ||
efdb0237 | 140 | if (set_isempty(UNIT(s)->pids) && |
2c289ea8 | 141 | !MANAGER_IS_RELOADING(UNIT(s)->manager) && |
efdb0237 | 142 | !unit_has_name(UNIT(s), SPECIAL_INIT_SCOPE)) { |
f2341e0a | 143 | log_unit_error(UNIT(s), "Scope has no PIDs. Refusing."); |
6c12b52e LP |
144 | return -EINVAL; |
145 | } | |
146 | ||
147 | return 0; | |
148 | } | |
149 | ||
8e4e851f LP |
150 | static int scope_load_init_scope(Unit *u) { |
151 | assert(u); | |
152 | ||
153 | if (!unit_has_name(u, SPECIAL_INIT_SCOPE)) | |
154 | return 0; | |
155 | ||
156 | u->transient = true; | |
f5869324 | 157 | u->perpetual = true; |
8e4e851f LP |
158 | |
159 | /* init.scope is a bit special, as it has to stick around forever. Because of its special semantics we | |
160 | * synthesize it here, instead of relying on the unit file on disk. */ | |
161 | ||
162 | u->default_dependencies = false; | |
163 | u->ignore_on_isolate = true; | |
8e4e851f LP |
164 | |
165 | SCOPE(u)->kill_context.kill_signal = SIGRTMIN+14; | |
166 | ||
167 | /* Prettify things, if we can. */ | |
168 | if (!u->description) | |
169 | u->description = strdup("System and Service Manager"); | |
170 | if (!u->documentation) | |
171 | (void) strv_extend(&u->documentation, "man:systemd(1)"); | |
172 | ||
173 | return 1; | |
174 | } | |
175 | ||
6c12b52e LP |
176 | static int scope_load(Unit *u) { |
177 | Scope *s = SCOPE(u); | |
178 | int r; | |
179 | ||
180 | assert(s); | |
181 | assert(u->load_state == UNIT_STUB); | |
182 | ||
2c289ea8 | 183 | if (!u->transient && !MANAGER_IS_RELOADING(u->manager)) |
4f4afc88 | 184 | /* Refuse to load non-transient scope units, but allow them while reloading. */ |
6c12b52e LP |
185 | return -ENOENT; |
186 | ||
8e4e851f LP |
187 | r = scope_load_init_scope(u); |
188 | if (r < 0) | |
189 | return r; | |
4f4afc88 | 190 | r = unit_load_fragment_and_dropin_optional(u); |
6c12b52e LP |
191 | if (r < 0) |
192 | return r; | |
193 | ||
4f4afc88 LP |
194 | if (u->load_state == UNIT_LOADED) { |
195 | r = unit_patch_contexts(u); | |
196 | if (r < 0) | |
197 | return r; | |
598459ce | 198 | |
4f4afc88 LP |
199 | r = unit_set_default_slice(u); |
200 | if (r < 0) | |
201 | return r; | |
6c12b52e | 202 | |
4f4afc88 LP |
203 | r = scope_add_default_dependencies(s); |
204 | if (r < 0) | |
205 | return r; | |
206 | } | |
6c12b52e LP |
207 | |
208 | return scope_verify(s); | |
209 | } | |
210 | ||
be847e82 | 211 | static int scope_coldplug(Unit *u) { |
6c12b52e LP |
212 | Scope *s = SCOPE(u); |
213 | int r; | |
214 | ||
215 | assert(s); | |
216 | assert(s->state == SCOPE_DEAD); | |
217 | ||
36c16a7c LP |
218 | if (s->deserialized_state == s->state) |
219 | return 0; | |
a911bb9a | 220 | |
36c16a7c LP |
221 | if (IN_SET(s->deserialized_state, SCOPE_STOP_SIGKILL, SCOPE_STOP_SIGTERM)) { |
222 | r = scope_arm_timer(s, usec_add(u->state_change_timestamp.monotonic, s->timeout_stop_usec)); | |
223 | if (r < 0) | |
224 | return r; | |
6c12b52e LP |
225 | } |
226 | ||
36c16a7c LP |
227 | if (!IN_SET(s->deserialized_state, SCOPE_DEAD, SCOPE_FAILED)) |
228 | unit_watch_all_pids(UNIT(s)); | |
229 | ||
230 | scope_set_state(s, s->deserialized_state); | |
6c12b52e LP |
231 | return 0; |
232 | } | |
233 | ||
234 | static void scope_dump(Unit *u, FILE *f, const char *prefix) { | |
235 | Scope *s = SCOPE(u); | |
236 | ||
237 | assert(s); | |
238 | assert(f); | |
239 | ||
240 | fprintf(f, | |
241 | "%sScope State: %s\n" | |
242 | "%sResult: %s\n", | |
243 | prefix, scope_state_to_string(s->state), | |
244 | prefix, scope_result_to_string(s->result)); | |
245 | ||
246 | cgroup_context_dump(&s->cgroup_context, f, prefix); | |
247 | kill_context_dump(&s->kill_context, f, prefix); | |
248 | } | |
249 | ||
250 | static void scope_enter_dead(Scope *s, ScopeResult f) { | |
251 | assert(s); | |
252 | ||
a0fef983 | 253 | if (s->result == SCOPE_SUCCESS) |
6c12b52e LP |
254 | s->result = f; |
255 | ||
256 | scope_set_state(s, s->result != SCOPE_SUCCESS ? SCOPE_FAILED : SCOPE_DEAD); | |
257 | } | |
258 | ||
259 | static void scope_enter_signal(Scope *s, ScopeState state, ScopeResult f) { | |
2d4a39e7 | 260 | bool skip_signal = false; |
6c12b52e LP |
261 | int r; |
262 | ||
263 | assert(s); | |
264 | ||
a0fef983 | 265 | if (s->result == SCOPE_SUCCESS) |
6c12b52e LP |
266 | s->result = f; |
267 | ||
a911bb9a LP |
268 | unit_watch_all_pids(UNIT(s)); |
269 | ||
2d4a39e7 LP |
270 | /* If we have a controller set let's ask the controller nicely |
271 | * to terminate the scope, instead of us going directly into | |
1d98fef1 | 272 | * SIGTERM berserk mode */ |
2d4a39e7 LP |
273 | if (state == SCOPE_STOP_SIGTERM) |
274 | skip_signal = bus_scope_send_request_stop(s) > 0; | |
275 | ||
276 | if (!skip_signal) { | |
277 | r = unit_kill_context( | |
278 | UNIT(s), | |
279 | &s->kill_context, | |
3862e809 LP |
280 | state != SCOPE_STOP_SIGTERM ? KILL_KILL : |
281 | s->was_abandoned ? KILL_TERMINATE_AND_LOG : | |
282 | KILL_TERMINATE, | |
2d4a39e7 LP |
283 | -1, -1, false); |
284 | if (r < 0) | |
285 | goto fail; | |
286 | } else | |
287 | r = 1; | |
6c12b52e LP |
288 | |
289 | if (r > 0) { | |
36c16a7c | 290 | r = scope_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_stop_usec)); |
718db961 LP |
291 | if (r < 0) |
292 | goto fail; | |
6c12b52e LP |
293 | |
294 | scope_set_state(s, state); | |
ac84d1fb LP |
295 | } else if (state == SCOPE_STOP_SIGTERM) |
296 | scope_enter_signal(s, SCOPE_STOP_SIGKILL, SCOPE_SUCCESS); | |
297 | else | |
6c12b52e LP |
298 | scope_enter_dead(s, SCOPE_SUCCESS); |
299 | ||
300 | return; | |
301 | ||
302 | fail: | |
f2341e0a | 303 | log_unit_warning_errno(UNIT(s), r, "Failed to kill processes: %m"); |
6c12b52e LP |
304 | |
305 | scope_enter_dead(s, SCOPE_FAILURE_RESOURCES); | |
306 | } | |
307 | ||
308 | static int scope_start(Unit *u) { | |
309 | Scope *s = SCOPE(u); | |
310 | int r; | |
311 | ||
312 | assert(s); | |
313 | ||
efdb0237 LP |
314 | if (unit_has_name(u, SPECIAL_INIT_SCOPE)) |
315 | return -EPERM; | |
316 | ||
7b617155 LP |
317 | if (s->state == SCOPE_FAILED) |
318 | return -EPERM; | |
319 | ||
dd305ec9 | 320 | /* We can't fulfill this right now, please try again later */ |
6c12b52e LP |
321 | if (s->state == SCOPE_STOP_SIGTERM || |
322 | s->state == SCOPE_STOP_SIGKILL) | |
323 | return -EAGAIN; | |
324 | ||
325 | assert(s->state == SCOPE_DEAD); | |
326 | ||
2c289ea8 | 327 | if (!u->transient && !MANAGER_IS_RELOADING(u->manager)) |
6c12b52e LP |
328 | return -ENOENT; |
329 | ||
4b58153d LP |
330 | r = unit_acquire_invocation_id(u); |
331 | if (r < 0) | |
332 | return r; | |
333 | ||
5ad096b3 LP |
334 | (void) unit_realize_cgroup(u); |
335 | (void) unit_reset_cpu_usage(u); | |
336 | ||
7b3fd631 | 337 | r = unit_attach_pids_to_cgroup(u); |
dd305ec9 | 338 | if (r < 0) { |
f2341e0a | 339 | log_unit_warning_errno(UNIT(s), r, "Failed to add PIDs to scope's control group: %m"); |
68a01fb6 | 340 | scope_enter_dead(s, SCOPE_FAILURE_RESOURCES); |
6c12b52e | 341 | return r; |
dd305ec9 | 342 | } |
6c12b52e | 343 | |
6c12b52e LP |
344 | s->result = SCOPE_SUCCESS; |
345 | ||
346 | scope_set_state(s, SCOPE_RUNNING); | |
82a2b6bb | 347 | return 1; |
6c12b52e LP |
348 | } |
349 | ||
350 | static int scope_stop(Unit *u) { | |
351 | Scope *s = SCOPE(u); | |
352 | ||
353 | assert(s); | |
6c12b52e LP |
354 | |
355 | if (s->state == SCOPE_STOP_SIGTERM || | |
356 | s->state == SCOPE_STOP_SIGKILL) | |
357 | return 0; | |
358 | ||
a911bb9a LP |
359 | assert(s->state == SCOPE_RUNNING || |
360 | s->state == SCOPE_ABANDONED); | |
6c12b52e LP |
361 | |
362 | scope_enter_signal(s, SCOPE_STOP_SIGTERM, SCOPE_SUCCESS); | |
82a2b6bb | 363 | return 1; |
6c12b52e LP |
364 | } |
365 | ||
8bcca7e2 LP |
366 | static void scope_reset_failed(Unit *u) { |
367 | Scope *s = SCOPE(u); | |
368 | ||
369 | assert(s); | |
370 | ||
371 | if (s->state == SCOPE_FAILED) | |
372 | scope_set_state(s, SCOPE_DEAD); | |
373 | ||
374 | s->result = SCOPE_SUCCESS; | |
375 | } | |
376 | ||
718db961 | 377 | static int scope_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
6c12b52e LP |
378 | return unit_kill_common(u, who, signo, -1, -1, error); |
379 | } | |
380 | ||
7a7821c8 | 381 | static int scope_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 382 | Scope *s = SCOPE(u); |
7a7821c8 | 383 | usec_t t; |
68db7a3b ZJS |
384 | int r; |
385 | ||
386 | if (!s->timer_event_source) | |
387 | return 0; | |
388 | ||
7a7821c8 | 389 | r = sd_event_source_get_time(s->timer_event_source, &t); |
68db7a3b ZJS |
390 | if (r < 0) |
391 | return r; | |
7a7821c8 LP |
392 | if (t == USEC_INFINITY) |
393 | return 0; | |
68db7a3b | 394 | |
7a7821c8 | 395 | *timeout = t; |
68db7a3b ZJS |
396 | return 1; |
397 | } | |
398 | ||
6c12b52e LP |
399 | static int scope_serialize(Unit *u, FILE *f, FDSet *fds) { |
400 | Scope *s = SCOPE(u); | |
401 | ||
402 | assert(s); | |
403 | assert(f); | |
404 | assert(fds); | |
405 | ||
406 | unit_serialize_item(u, f, "state", scope_state_to_string(s->state)); | |
3862e809 | 407 | unit_serialize_item(u, f, "was-abandoned", yes_no(s->was_abandoned)); |
6c12b52e LP |
408 | return 0; |
409 | } | |
410 | ||
411 | static int scope_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
412 | Scope *s = SCOPE(u); | |
413 | ||
414 | assert(u); | |
415 | assert(key); | |
416 | assert(value); | |
417 | assert(fds); | |
418 | ||
419 | if (streq(key, "state")) { | |
420 | ScopeState state; | |
421 | ||
422 | state = scope_state_from_string(value); | |
423 | if (state < 0) | |
f2341e0a | 424 | log_unit_debug(u, "Failed to parse state value: %s", value); |
6c12b52e LP |
425 | else |
426 | s->deserialized_state = state; | |
427 | ||
3862e809 LP |
428 | } else if (streq(key, "was-abandoned")) { |
429 | int k; | |
430 | ||
431 | k = parse_boolean(value); | |
432 | if (k < 0) | |
433 | log_unit_debug(u, "Failed to parse boolean value: %s", value); | |
434 | else | |
435 | s->was_abandoned = k; | |
6c12b52e | 436 | } else |
f2341e0a | 437 | log_unit_debug(u, "Unknown serialization key: %s", key); |
6c12b52e LP |
438 | |
439 | return 0; | |
440 | } | |
441 | ||
442 | static bool scope_check_gc(Unit *u) { | |
4e2744fc | 443 | assert(u); |
6c12b52e LP |
444 | |
445 | /* Never clean up scopes that still have a process around, | |
446 | * even if the scope is formally dead. */ | |
447 | ||
700e2d63 LP |
448 | if (!u->cgroup_path) |
449 | return false; | |
4e2744fc | 450 | |
700e2d63 | 451 | return cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path) <= 0; |
6c12b52e LP |
452 | } |
453 | ||
a911bb9a LP |
454 | static void scope_notify_cgroup_empty_event(Unit *u) { |
455 | Scope *s = SCOPE(u); | |
456 | assert(u); | |
457 | ||
f2341e0a | 458 | log_unit_debug(u, "cgroup is empty"); |
a911bb9a LP |
459 | |
460 | if (IN_SET(s->state, SCOPE_RUNNING, SCOPE_ABANDONED, SCOPE_STOP_SIGTERM, SCOPE_STOP_SIGKILL)) | |
461 | scope_enter_dead(s, SCOPE_SUCCESS); | |
462 | } | |
463 | ||
464 | static void scope_sigchld_event(Unit *u, pid_t pid, int code, int status) { | |
465 | ||
466 | /* If we get a SIGCHLD event for one of the processes we were | |
467 | interested in, then we look for others to watch, under the | |
468 | assumption that we'll sooner or later get a SIGCHLD for | |
469 | them, as the original process we watched was probably the | |
470 | parent of them, and they are hence now our children. */ | |
471 | ||
472 | unit_tidy_watch_pids(u, 0, 0); | |
473 | unit_watch_all_pids(u); | |
474 | ||
bbc85a16 EV |
475 | /* If the PID set is empty now, then let's finish this off |
476 | (On unified we use proper notifications) */ | |
5da38d07 | 477 | if (cg_unified(SYSTEMD_CGROUP_CONTROLLER) <= 0 && set_isempty(u->pids)) |
a911bb9a LP |
478 | scope_notify_cgroup_empty_event(u); |
479 | } | |
480 | ||
718db961 LP |
481 | static int scope_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
482 | Scope *s = SCOPE(userdata); | |
6c12b52e LP |
483 | |
484 | assert(s); | |
718db961 | 485 | assert(s->timer_event_source == source); |
6c12b52e LP |
486 | |
487 | switch (s->state) { | |
488 | ||
489 | case SCOPE_STOP_SIGTERM: | |
490 | if (s->kill_context.send_sigkill) { | |
f2341e0a | 491 | log_unit_warning(UNIT(s), "Stopping timed out. Killing."); |
6c12b52e LP |
492 | scope_enter_signal(s, SCOPE_STOP_SIGKILL, SCOPE_FAILURE_TIMEOUT); |
493 | } else { | |
f2341e0a | 494 | log_unit_warning(UNIT(s), "Stopping timed out. Skipping SIGKILL."); |
6c12b52e LP |
495 | scope_enter_dead(s, SCOPE_FAILURE_TIMEOUT); |
496 | } | |
497 | ||
498 | break; | |
499 | ||
500 | case SCOPE_STOP_SIGKILL: | |
f2341e0a | 501 | log_unit_warning(UNIT(s), "Still around after SIGKILL. Ignoring."); |
6c12b52e LP |
502 | scope_enter_dead(s, SCOPE_FAILURE_TIMEOUT); |
503 | break; | |
504 | ||
505 | default: | |
506 | assert_not_reached("Timeout at wrong time."); | |
507 | } | |
718db961 LP |
508 | |
509 | return 0; | |
6c12b52e LP |
510 | } |
511 | ||
a911bb9a LP |
512 | int scope_abandon(Scope *s) { |
513 | assert(s); | |
6c12b52e | 514 | |
efdb0237 LP |
515 | if (unit_has_name(UNIT(s), SPECIAL_INIT_SCOPE)) |
516 | return -EPERM; | |
517 | ||
a911bb9a LP |
518 | if (!IN_SET(s->state, SCOPE_RUNNING, SCOPE_ABANDONED)) |
519 | return -ESTALE; | |
6c12b52e | 520 | |
3862e809 | 521 | s->was_abandoned = true; |
a1e58e8e | 522 | s->controller = mfree(s->controller); |
6c12b52e | 523 | |
a911bb9a LP |
524 | /* The client is no longer watching the remaining processes, |
525 | * so let's step in here, under the assumption that the | |
526 | * remaining processes will be sooner or later reassigned to | |
527 | * us as parent. */ | |
6c12b52e | 528 | |
a911bb9a LP |
529 | unit_tidy_watch_pids(UNIT(s), 0, 0); |
530 | unit_watch_all_pids(UNIT(s)); | |
6c12b52e | 531 | |
a911bb9a LP |
532 | /* If the PID set is empty now, then let's finish this off */ |
533 | if (set_isempty(UNIT(s)->pids)) | |
534 | scope_notify_cgroup_empty_event(UNIT(s)); | |
535 | else | |
536 | scope_set_state(s, SCOPE_ABANDONED); | |
537 | ||
538 | return 0; | |
6c12b52e LP |
539 | } |
540 | ||
541 | _pure_ static UnitActiveState scope_active_state(Unit *u) { | |
542 | assert(u); | |
543 | ||
544 | return state_translation_table[SCOPE(u)->state]; | |
545 | } | |
546 | ||
547 | _pure_ static const char *scope_sub_state_to_string(Unit *u) { | |
548 | assert(u); | |
549 | ||
550 | return scope_state_to_string(SCOPE(u)->state); | |
551 | } | |
552 | ||
ba64af90 | 553 | static void scope_enumerate(Manager *m) { |
efdb0237 LP |
554 | Unit *u; |
555 | int r; | |
556 | ||
557 | assert(m); | |
558 | ||
559 | /* Let's unconditionally add the "init.scope" special unit | |
560 | * that encapsulates PID 1. Note that PID 1 already is in the | |
561 | * cgroup for this, we hence just need to allocate the object | |
562 | * for it and that's it. */ | |
563 | ||
564 | u = manager_get_unit(m, SPECIAL_INIT_SCOPE); | |
565 | if (!u) { | |
566 | u = unit_new(m, sizeof(Scope)); | |
ba64af90 LP |
567 | if (!u) { |
568 | log_oom(); | |
569 | return; | |
570 | } | |
efdb0237 LP |
571 | |
572 | r = unit_add_name(u, SPECIAL_INIT_SCOPE); | |
573 | if (r < 0) { | |
574 | unit_free(u); | |
8e4e851f | 575 | log_error_errno(r, "Failed to add the " SPECIAL_INIT_SCOPE " name: %m"); |
ba64af90 | 576 | return; |
efdb0237 LP |
577 | } |
578 | } | |
579 | ||
580 | u->transient = true; | |
f5869324 | 581 | u->perpetual = true; |
efdb0237 | 582 | SCOPE(u)->deserialized_state = SCOPE_RUNNING; |
efdb0237 LP |
583 | |
584 | unit_add_to_load_queue(u); | |
585 | unit_add_to_dbus_queue(u); | |
efdb0237 LP |
586 | } |
587 | ||
6c12b52e LP |
588 | static const char* const scope_result_table[_SCOPE_RESULT_MAX] = { |
589 | [SCOPE_SUCCESS] = "success", | |
590 | [SCOPE_FAILURE_RESOURCES] = "resources", | |
591 | [SCOPE_FAILURE_TIMEOUT] = "timeout", | |
592 | }; | |
593 | ||
594 | DEFINE_STRING_TABLE_LOOKUP(scope_result, ScopeResult); | |
595 | ||
596 | const UnitVTable scope_vtable = { | |
597 | .object_size = sizeof(Scope), | |
718db961 LP |
598 | .cgroup_context_offset = offsetof(Scope, cgroup_context), |
599 | .kill_context_offset = offsetof(Scope, kill_context), | |
600 | ||
6c12b52e LP |
601 | .sections = |
602 | "Unit\0" | |
603 | "Scope\0" | |
604 | "Install\0", | |
6c12b52e | 605 | .private_section = "Scope", |
6c12b52e | 606 | |
700e2d63 | 607 | .can_transient = true, |
6c12b52e LP |
608 | |
609 | .init = scope_init, | |
610 | .load = scope_load, | |
611 | .done = scope_done, | |
612 | ||
613 | .coldplug = scope_coldplug, | |
614 | ||
615 | .dump = scope_dump, | |
616 | ||
617 | .start = scope_start, | |
618 | .stop = scope_stop, | |
619 | ||
620 | .kill = scope_kill, | |
621 | ||
68db7a3b ZJS |
622 | .get_timeout = scope_get_timeout, |
623 | ||
6c12b52e LP |
624 | .serialize = scope_serialize, |
625 | .deserialize_item = scope_deserialize_item, | |
626 | ||
627 | .active_state = scope_active_state, | |
628 | .sub_state_to_string = scope_sub_state_to_string, | |
629 | ||
630 | .check_gc = scope_check_gc, | |
631 | ||
a911bb9a LP |
632 | .sigchld_event = scope_sigchld_event, |
633 | ||
8bcca7e2 LP |
634 | .reset_failed = scope_reset_failed, |
635 | ||
6c12b52e LP |
636 | .notify_cgroup_empty = scope_notify_cgroup_empty_event, |
637 | ||
718db961 | 638 | .bus_vtable = bus_scope_vtable, |
6c12b52e LP |
639 | .bus_set_property = bus_scope_set_property, |
640 | .bus_commit_properties = bus_scope_commit_properties, | |
641 | ||
efdb0237 | 642 | .enumerate = scope_enumerate, |
6c12b52e | 643 | }; |