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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
6c12b52e LP |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright 2013 Lennart Poettering | |
6c12b52e LP |
6 | ***/ |
7 | ||
8 | #include <errno.h> | |
6c12b52e LP |
9 | #include <unistd.h> |
10 | ||
b5efdb8a | 11 | #include "alloc-util.h" |
07630cea LP |
12 | #include "dbus-scope.h" |
13 | #include "load-dropin.h" | |
6c12b52e | 14 | #include "log.h" |
b5efdb8a | 15 | #include "scope.h" |
6c12b52e | 16 | #include "special.h" |
8b43440b | 17 | #include "string-table.h" |
07630cea LP |
18 | #include "string-util.h" |
19 | #include "strv.h" | |
6c12b52e | 20 | #include "unit-name.h" |
efdb0237 | 21 | #include "unit.h" |
6c12b52e LP |
22 | |
23 | static const UnitActiveState state_translation_table[_SCOPE_STATE_MAX] = { | |
24 | [SCOPE_DEAD] = UNIT_INACTIVE, | |
25 | [SCOPE_RUNNING] = UNIT_ACTIVE, | |
a911bb9a | 26 | [SCOPE_ABANDONED] = UNIT_ACTIVE, |
6c12b52e LP |
27 | [SCOPE_STOP_SIGTERM] = UNIT_DEACTIVATING, |
28 | [SCOPE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
29 | [SCOPE_FAILED] = UNIT_FAILED | |
30 | }; | |
31 | ||
718db961 LP |
32 | static int scope_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); |
33 | ||
6c12b52e LP |
34 | static void scope_init(Unit *u) { |
35 | Scope *s = SCOPE(u); | |
36 | ||
37 | assert(u); | |
38 | assert(u->load_state == UNIT_STUB); | |
39 | ||
1f19a534 | 40 | s->timeout_stop_usec = u->manager->default_timeout_stop_usec; |
1b4cd0cf | 41 | u->ignore_on_isolate = true; |
6c12b52e LP |
42 | } |
43 | ||
44 | static void scope_done(Unit *u) { | |
45 | Scope *s = SCOPE(u); | |
46 | ||
47 | assert(u); | |
48 | ||
371c0b79 LP |
49 | s->controller = mfree(s->controller); |
50 | s->controller_track = sd_bus_track_unref(s->controller_track); | |
2d4a39e7 | 51 | |
718db961 LP |
52 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
53 | } | |
54 | ||
36c16a7c | 55 | static int scope_arm_timer(Scope *s, usec_t usec) { |
718db961 LP |
56 | int r; |
57 | ||
58 | assert(s); | |
59 | ||
718db961 | 60 | if (s->timer_event_source) { |
36c16a7c | 61 | r = sd_event_source_set_time(s->timer_event_source, usec); |
718db961 LP |
62 | if (r < 0) |
63 | return r; | |
64 | ||
65 | return sd_event_source_set_enabled(s->timer_event_source, SD_EVENT_ONESHOT); | |
66 | } | |
67 | ||
36c16a7c LP |
68 | if (usec == USEC_INFINITY) |
69 | return 0; | |
70 | ||
cbf60d0a | 71 | r = sd_event_add_time( |
6a0f1f6d LP |
72 | UNIT(s)->manager->event, |
73 | &s->timer_event_source, | |
74 | CLOCK_MONOTONIC, | |
36c16a7c | 75 | usec, 0, |
6a0f1f6d | 76 | scope_dispatch_timer, s); |
7dfbe2e3 TG |
77 | if (r < 0) |
78 | return r; | |
79 | ||
80 | (void) sd_event_source_set_description(s->timer_event_source, "scope-timer"); | |
81 | ||
82 | return 0; | |
6c12b52e LP |
83 | } |
84 | ||
85 | static void scope_set_state(Scope *s, ScopeState state) { | |
86 | ScopeState old_state; | |
87 | assert(s); | |
88 | ||
89 | old_state = s->state; | |
90 | s->state = state; | |
91 | ||
a911bb9a | 92 | if (!IN_SET(state, SCOPE_STOP_SIGTERM, SCOPE_STOP_SIGKILL)) |
718db961 | 93 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
6c12b52e | 94 | |
a911bb9a LP |
95 | if (IN_SET(state, SCOPE_DEAD, SCOPE_FAILED)) |
96 | unit_unwatch_all_pids(UNIT(s)); | |
97 | ||
6c12b52e | 98 | if (state != old_state) |
a911bb9a | 99 | log_debug("%s changed %s -> %s", UNIT(s)->id, scope_state_to_string(old_state), scope_state_to_string(state)); |
6c12b52e LP |
100 | |
101 | unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state], true); | |
102 | } | |
103 | ||
104 | static int scope_add_default_dependencies(Scope *s) { | |
105 | int r; | |
106 | ||
107 | assert(s); | |
108 | ||
4c9ea260 LP |
109 | if (!UNIT(s)->default_dependencies) |
110 | return 0; | |
111 | ||
6c12b52e LP |
112 | /* Make sure scopes are unloaded on shutdown */ |
113 | r = unit_add_two_dependencies_by_name( | |
114 | UNIT(s), | |
115 | UNIT_BEFORE, UNIT_CONFLICTS, | |
eef85c4a LP |
116 | SPECIAL_SHUTDOWN_TARGET, NULL, true, |
117 | UNIT_DEPENDENCY_DEFAULT); | |
6c12b52e LP |
118 | if (r < 0) |
119 | return r; | |
120 | ||
121 | return 0; | |
122 | } | |
123 | ||
124 | static int scope_verify(Scope *s) { | |
125 | assert(s); | |
126 | ||
127 | if (UNIT(s)->load_state != UNIT_LOADED) | |
128 | return 0; | |
129 | ||
efdb0237 | 130 | if (set_isempty(UNIT(s)->pids) && |
2c289ea8 | 131 | !MANAGER_IS_RELOADING(UNIT(s)->manager) && |
efdb0237 | 132 | !unit_has_name(UNIT(s), SPECIAL_INIT_SCOPE)) { |
f2341e0a | 133 | log_unit_error(UNIT(s), "Scope has no PIDs. Refusing."); |
6c12b52e LP |
134 | return -EINVAL; |
135 | } | |
136 | ||
137 | return 0; | |
138 | } | |
139 | ||
8e4e851f LP |
140 | static int scope_load_init_scope(Unit *u) { |
141 | assert(u); | |
142 | ||
143 | if (!unit_has_name(u, SPECIAL_INIT_SCOPE)) | |
144 | return 0; | |
145 | ||
146 | u->transient = true; | |
f5869324 | 147 | u->perpetual = true; |
8e4e851f LP |
148 | |
149 | /* init.scope is a bit special, as it has to stick around forever. Because of its special semantics we | |
150 | * synthesize it here, instead of relying on the unit file on disk. */ | |
151 | ||
152 | u->default_dependencies = false; | |
8e4e851f LP |
153 | |
154 | /* Prettify things, if we can. */ | |
155 | if (!u->description) | |
156 | u->description = strdup("System and Service Manager"); | |
157 | if (!u->documentation) | |
158 | (void) strv_extend(&u->documentation, "man:systemd(1)"); | |
159 | ||
160 | return 1; | |
161 | } | |
162 | ||
6c12b52e LP |
163 | static int scope_load(Unit *u) { |
164 | Scope *s = SCOPE(u); | |
165 | int r; | |
166 | ||
167 | assert(s); | |
168 | assert(u->load_state == UNIT_STUB); | |
169 | ||
2c289ea8 | 170 | if (!u->transient && !MANAGER_IS_RELOADING(u->manager)) |
4f4afc88 | 171 | /* Refuse to load non-transient scope units, but allow them while reloading. */ |
6c12b52e LP |
172 | return -ENOENT; |
173 | ||
8e4e851f LP |
174 | r = scope_load_init_scope(u); |
175 | if (r < 0) | |
176 | return r; | |
4f4afc88 | 177 | r = unit_load_fragment_and_dropin_optional(u); |
6c12b52e LP |
178 | if (r < 0) |
179 | return r; | |
180 | ||
4f4afc88 LP |
181 | if (u->load_state == UNIT_LOADED) { |
182 | r = unit_patch_contexts(u); | |
183 | if (r < 0) | |
184 | return r; | |
598459ce | 185 | |
4f4afc88 LP |
186 | r = unit_set_default_slice(u); |
187 | if (r < 0) | |
188 | return r; | |
6c12b52e | 189 | |
4f4afc88 LP |
190 | r = scope_add_default_dependencies(s); |
191 | if (r < 0) | |
192 | return r; | |
193 | } | |
6c12b52e LP |
194 | |
195 | return scope_verify(s); | |
196 | } | |
197 | ||
be847e82 | 198 | static int scope_coldplug(Unit *u) { |
6c12b52e LP |
199 | Scope *s = SCOPE(u); |
200 | int r; | |
201 | ||
202 | assert(s); | |
203 | assert(s->state == SCOPE_DEAD); | |
204 | ||
36c16a7c LP |
205 | if (s->deserialized_state == s->state) |
206 | return 0; | |
a911bb9a | 207 | |
36c16a7c LP |
208 | if (IN_SET(s->deserialized_state, SCOPE_STOP_SIGKILL, SCOPE_STOP_SIGTERM)) { |
209 | r = scope_arm_timer(s, usec_add(u->state_change_timestamp.monotonic, s->timeout_stop_usec)); | |
210 | if (r < 0) | |
211 | return r; | |
6c12b52e LP |
212 | } |
213 | ||
36c16a7c LP |
214 | if (!IN_SET(s->deserialized_state, SCOPE_DEAD, SCOPE_FAILED)) |
215 | unit_watch_all_pids(UNIT(s)); | |
216 | ||
371c0b79 LP |
217 | bus_scope_track_controller(s); |
218 | ||
36c16a7c | 219 | scope_set_state(s, s->deserialized_state); |
6c12b52e LP |
220 | return 0; |
221 | } | |
222 | ||
223 | static void scope_dump(Unit *u, FILE *f, const char *prefix) { | |
224 | Scope *s = SCOPE(u); | |
225 | ||
226 | assert(s); | |
227 | assert(f); | |
228 | ||
229 | fprintf(f, | |
230 | "%sScope State: %s\n" | |
231 | "%sResult: %s\n", | |
232 | prefix, scope_state_to_string(s->state), | |
233 | prefix, scope_result_to_string(s->result)); | |
234 | ||
235 | cgroup_context_dump(&s->cgroup_context, f, prefix); | |
236 | kill_context_dump(&s->kill_context, f, prefix); | |
237 | } | |
238 | ||
239 | static void scope_enter_dead(Scope *s, ScopeResult f) { | |
240 | assert(s); | |
241 | ||
a0fef983 | 242 | if (s->result == SCOPE_SUCCESS) |
6c12b52e LP |
243 | s->result = f; |
244 | ||
ed77d407 LP |
245 | if (s->result != SCOPE_SUCCESS) |
246 | log_unit_warning(UNIT(s), "Failed with result '%s'.", scope_result_to_string(s->result)); | |
247 | ||
6c12b52e LP |
248 | scope_set_state(s, s->result != SCOPE_SUCCESS ? SCOPE_FAILED : SCOPE_DEAD); |
249 | } | |
250 | ||
251 | static void scope_enter_signal(Scope *s, ScopeState state, ScopeResult f) { | |
2d4a39e7 | 252 | bool skip_signal = false; |
6c12b52e LP |
253 | int r; |
254 | ||
255 | assert(s); | |
256 | ||
a0fef983 | 257 | if (s->result == SCOPE_SUCCESS) |
6c12b52e LP |
258 | s->result = f; |
259 | ||
a911bb9a LP |
260 | unit_watch_all_pids(UNIT(s)); |
261 | ||
371c0b79 LP |
262 | /* If we have a controller set let's ask the controller nicely to terminate the scope, instead of us going |
263 | * directly into SIGTERM berserk mode */ | |
2d4a39e7 LP |
264 | if (state == SCOPE_STOP_SIGTERM) |
265 | skip_signal = bus_scope_send_request_stop(s) > 0; | |
266 | ||
59ec09a8 ZJS |
267 | if (skip_signal) |
268 | r = 1; /* wait */ | |
269 | else { | |
2d4a39e7 LP |
270 | r = unit_kill_context( |
271 | UNIT(s), | |
272 | &s->kill_context, | |
3862e809 LP |
273 | state != SCOPE_STOP_SIGTERM ? KILL_KILL : |
274 | s->was_abandoned ? KILL_TERMINATE_AND_LOG : | |
275 | KILL_TERMINATE, | |
2d4a39e7 LP |
276 | -1, -1, false); |
277 | if (r < 0) | |
278 | goto fail; | |
59ec09a8 | 279 | } |
6c12b52e LP |
280 | |
281 | if (r > 0) { | |
36c16a7c | 282 | r = scope_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_stop_usec)); |
718db961 LP |
283 | if (r < 0) |
284 | goto fail; | |
6c12b52e LP |
285 | |
286 | scope_set_state(s, state); | |
ac84d1fb LP |
287 | } else if (state == SCOPE_STOP_SIGTERM) |
288 | scope_enter_signal(s, SCOPE_STOP_SIGKILL, SCOPE_SUCCESS); | |
289 | else | |
6c12b52e LP |
290 | scope_enter_dead(s, SCOPE_SUCCESS); |
291 | ||
292 | return; | |
293 | ||
294 | fail: | |
f2341e0a | 295 | log_unit_warning_errno(UNIT(s), r, "Failed to kill processes: %m"); |
6c12b52e LP |
296 | |
297 | scope_enter_dead(s, SCOPE_FAILURE_RESOURCES); | |
298 | } | |
299 | ||
300 | static int scope_start(Unit *u) { | |
301 | Scope *s = SCOPE(u); | |
302 | int r; | |
303 | ||
304 | assert(s); | |
305 | ||
efdb0237 LP |
306 | if (unit_has_name(u, SPECIAL_INIT_SCOPE)) |
307 | return -EPERM; | |
308 | ||
7b617155 LP |
309 | if (s->state == SCOPE_FAILED) |
310 | return -EPERM; | |
311 | ||
dd305ec9 | 312 | /* We can't fulfill this right now, please try again later */ |
3742095b | 313 | if (IN_SET(s->state, SCOPE_STOP_SIGTERM, SCOPE_STOP_SIGKILL)) |
6c12b52e LP |
314 | return -EAGAIN; |
315 | ||
316 | assert(s->state == SCOPE_DEAD); | |
317 | ||
2c289ea8 | 318 | if (!u->transient && !MANAGER_IS_RELOADING(u->manager)) |
6c12b52e LP |
319 | return -ENOENT; |
320 | ||
371c0b79 LP |
321 | (void) bus_scope_track_controller(s); |
322 | ||
4b58153d LP |
323 | r = unit_acquire_invocation_id(u); |
324 | if (r < 0) | |
325 | return r; | |
326 | ||
5ad096b3 | 327 | (void) unit_realize_cgroup(u); |
906c06f6 DM |
328 | (void) unit_reset_cpu_accounting(u); |
329 | (void) unit_reset_ip_accounting(u); | |
5ad096b3 | 330 | |
d3070fbd LP |
331 | unit_export_state_files(UNIT(s)); |
332 | ||
6592b975 | 333 | r = unit_attach_pids_to_cgroup(u, UNIT(s)->pids, NULL); |
dd305ec9 | 334 | if (r < 0) { |
f2341e0a | 335 | log_unit_warning_errno(UNIT(s), r, "Failed to add PIDs to scope's control group: %m"); |
68a01fb6 | 336 | scope_enter_dead(s, SCOPE_FAILURE_RESOURCES); |
6c12b52e | 337 | return r; |
dd305ec9 | 338 | } |
6c12b52e | 339 | |
6c12b52e LP |
340 | s->result = SCOPE_SUCCESS; |
341 | ||
342 | scope_set_state(s, SCOPE_RUNNING); | |
82a2b6bb | 343 | return 1; |
6c12b52e LP |
344 | } |
345 | ||
346 | static int scope_stop(Unit *u) { | |
347 | Scope *s = SCOPE(u); | |
348 | ||
349 | assert(s); | |
6c12b52e | 350 | |
3742095b | 351 | if (IN_SET(s->state, SCOPE_STOP_SIGTERM, SCOPE_STOP_SIGKILL)) |
6c12b52e LP |
352 | return 0; |
353 | ||
3742095b | 354 | assert(IN_SET(s->state, SCOPE_RUNNING, SCOPE_ABANDONED)); |
6c12b52e LP |
355 | |
356 | scope_enter_signal(s, SCOPE_STOP_SIGTERM, SCOPE_SUCCESS); | |
82a2b6bb | 357 | return 1; |
6c12b52e LP |
358 | } |
359 | ||
8bcca7e2 LP |
360 | static void scope_reset_failed(Unit *u) { |
361 | Scope *s = SCOPE(u); | |
362 | ||
363 | assert(s); | |
364 | ||
365 | if (s->state == SCOPE_FAILED) | |
366 | scope_set_state(s, SCOPE_DEAD); | |
367 | ||
368 | s->result = SCOPE_SUCCESS; | |
369 | } | |
370 | ||
718db961 | 371 | static int scope_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
6c12b52e LP |
372 | return unit_kill_common(u, who, signo, -1, -1, error); |
373 | } | |
374 | ||
7a7821c8 | 375 | static int scope_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 376 | Scope *s = SCOPE(u); |
7a7821c8 | 377 | usec_t t; |
68db7a3b ZJS |
378 | int r; |
379 | ||
380 | if (!s->timer_event_source) | |
381 | return 0; | |
382 | ||
7a7821c8 | 383 | r = sd_event_source_get_time(s->timer_event_source, &t); |
68db7a3b ZJS |
384 | if (r < 0) |
385 | return r; | |
7a7821c8 LP |
386 | if (t == USEC_INFINITY) |
387 | return 0; | |
68db7a3b | 388 | |
7a7821c8 | 389 | *timeout = t; |
68db7a3b ZJS |
390 | return 1; |
391 | } | |
392 | ||
6c12b52e LP |
393 | static int scope_serialize(Unit *u, FILE *f, FDSet *fds) { |
394 | Scope *s = SCOPE(u); | |
395 | ||
396 | assert(s); | |
397 | assert(f); | |
398 | assert(fds); | |
399 | ||
400 | unit_serialize_item(u, f, "state", scope_state_to_string(s->state)); | |
3862e809 | 401 | unit_serialize_item(u, f, "was-abandoned", yes_no(s->was_abandoned)); |
33fe0afe LP |
402 | |
403 | if (s->controller) | |
404 | unit_serialize_item(u, f, "controller", s->controller); | |
405 | ||
6c12b52e LP |
406 | return 0; |
407 | } | |
408 | ||
409 | static int scope_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
410 | Scope *s = SCOPE(u); | |
33fe0afe | 411 | int r; |
6c12b52e LP |
412 | |
413 | assert(u); | |
414 | assert(key); | |
415 | assert(value); | |
416 | assert(fds); | |
417 | ||
418 | if (streq(key, "state")) { | |
419 | ScopeState state; | |
420 | ||
421 | state = scope_state_from_string(value); | |
422 | if (state < 0) | |
f2341e0a | 423 | log_unit_debug(u, "Failed to parse state value: %s", value); |
6c12b52e LP |
424 | else |
425 | s->deserialized_state = state; | |
426 | ||
3862e809 LP |
427 | } else if (streq(key, "was-abandoned")) { |
428 | int k; | |
429 | ||
430 | k = parse_boolean(value); | |
431 | if (k < 0) | |
432 | log_unit_debug(u, "Failed to parse boolean value: %s", value); | |
433 | else | |
434 | s->was_abandoned = k; | |
33fe0afe LP |
435 | } else if (streq(key, "controller")) { |
436 | ||
437 | r = free_and_strdup(&s->controller, value); | |
438 | if (r < 0) | |
439 | log_oom(); | |
440 | ||
6c12b52e | 441 | } else |
f2341e0a | 442 | log_unit_debug(u, "Unknown serialization key: %s", key); |
6c12b52e LP |
443 | |
444 | return 0; | |
445 | } | |
446 | ||
a911bb9a LP |
447 | static void scope_notify_cgroup_empty_event(Unit *u) { |
448 | Scope *s = SCOPE(u); | |
449 | assert(u); | |
450 | ||
f2341e0a | 451 | log_unit_debug(u, "cgroup is empty"); |
a911bb9a LP |
452 | |
453 | if (IN_SET(s->state, SCOPE_RUNNING, SCOPE_ABANDONED, SCOPE_STOP_SIGTERM, SCOPE_STOP_SIGKILL)) | |
454 | scope_enter_dead(s, SCOPE_SUCCESS); | |
455 | } | |
456 | ||
457 | static void scope_sigchld_event(Unit *u, pid_t pid, int code, int status) { | |
458 | ||
11aef522 | 459 | assert(u); |
a911bb9a | 460 | |
11aef522 LP |
461 | /* If we get a SIGCHLD event for one of the processes we were interested in, then we look for others to |
462 | * watch, under the assumption that we'll sooner or later get a SIGCHLD for them, as the original | |
463 | * process we watched was probably the parent of them, and they are hence now our children. */ | |
a911bb9a LP |
464 | unit_tidy_watch_pids(u, 0, 0); |
465 | unit_watch_all_pids(u); | |
466 | ||
11aef522 LP |
467 | /* If the PID set is empty now, then let's finish this off. */ |
468 | unit_synthesize_cgroup_empty_event(u); | |
a911bb9a LP |
469 | } |
470 | ||
718db961 LP |
471 | static int scope_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
472 | Scope *s = SCOPE(userdata); | |
6c12b52e LP |
473 | |
474 | assert(s); | |
718db961 | 475 | assert(s->timer_event_source == source); |
6c12b52e LP |
476 | |
477 | switch (s->state) { | |
478 | ||
479 | case SCOPE_STOP_SIGTERM: | |
480 | if (s->kill_context.send_sigkill) { | |
f2341e0a | 481 | log_unit_warning(UNIT(s), "Stopping timed out. Killing."); |
6c12b52e LP |
482 | scope_enter_signal(s, SCOPE_STOP_SIGKILL, SCOPE_FAILURE_TIMEOUT); |
483 | } else { | |
f2341e0a | 484 | log_unit_warning(UNIT(s), "Stopping timed out. Skipping SIGKILL."); |
6c12b52e LP |
485 | scope_enter_dead(s, SCOPE_FAILURE_TIMEOUT); |
486 | } | |
487 | ||
488 | break; | |
489 | ||
490 | case SCOPE_STOP_SIGKILL: | |
f2341e0a | 491 | log_unit_warning(UNIT(s), "Still around after SIGKILL. Ignoring."); |
6c12b52e LP |
492 | scope_enter_dead(s, SCOPE_FAILURE_TIMEOUT); |
493 | break; | |
494 | ||
495 | default: | |
496 | assert_not_reached("Timeout at wrong time."); | |
497 | } | |
718db961 LP |
498 | |
499 | return 0; | |
6c12b52e LP |
500 | } |
501 | ||
a911bb9a LP |
502 | int scope_abandon(Scope *s) { |
503 | assert(s); | |
6c12b52e | 504 | |
efdb0237 LP |
505 | if (unit_has_name(UNIT(s), SPECIAL_INIT_SCOPE)) |
506 | return -EPERM; | |
507 | ||
a911bb9a LP |
508 | if (!IN_SET(s->state, SCOPE_RUNNING, SCOPE_ABANDONED)) |
509 | return -ESTALE; | |
6c12b52e | 510 | |
3862e809 | 511 | s->was_abandoned = true; |
371c0b79 | 512 | |
a1e58e8e | 513 | s->controller = mfree(s->controller); |
371c0b79 LP |
514 | s->controller_track = sd_bus_track_unref(s->controller_track); |
515 | ||
8cb83266 | 516 | scope_set_state(s, SCOPE_ABANDONED); |
6c12b52e | 517 | |
a911bb9a LP |
518 | /* The client is no longer watching the remaining processes, |
519 | * so let's step in here, under the assumption that the | |
520 | * remaining processes will be sooner or later reassigned to | |
521 | * us as parent. */ | |
6c12b52e | 522 | |
a911bb9a LP |
523 | unit_tidy_watch_pids(UNIT(s), 0, 0); |
524 | unit_watch_all_pids(UNIT(s)); | |
6c12b52e | 525 | |
a911bb9a | 526 | return 0; |
6c12b52e LP |
527 | } |
528 | ||
529 | _pure_ static UnitActiveState scope_active_state(Unit *u) { | |
530 | assert(u); | |
531 | ||
532 | return state_translation_table[SCOPE(u)->state]; | |
533 | } | |
534 | ||
535 | _pure_ static const char *scope_sub_state_to_string(Unit *u) { | |
536 | assert(u); | |
537 | ||
538 | return scope_state_to_string(SCOPE(u)->state); | |
539 | } | |
540 | ||
ba64af90 | 541 | static void scope_enumerate(Manager *m) { |
efdb0237 LP |
542 | Unit *u; |
543 | int r; | |
544 | ||
545 | assert(m); | |
546 | ||
547 | /* Let's unconditionally add the "init.scope" special unit | |
548 | * that encapsulates PID 1. Note that PID 1 already is in the | |
549 | * cgroup for this, we hence just need to allocate the object | |
550 | * for it and that's it. */ | |
551 | ||
552 | u = manager_get_unit(m, SPECIAL_INIT_SCOPE); | |
553 | if (!u) { | |
a581e45a | 554 | r = unit_new_for_name(m, sizeof(Scope), SPECIAL_INIT_SCOPE, &u); |
efdb0237 | 555 | if (r < 0) { |
a581e45a | 556 | log_error_errno(r, "Failed to allocate the special " SPECIAL_INIT_SCOPE " unit: %m"); |
ba64af90 | 557 | return; |
efdb0237 LP |
558 | } |
559 | } | |
560 | ||
561 | u->transient = true; | |
f5869324 | 562 | u->perpetual = true; |
efdb0237 | 563 | SCOPE(u)->deserialized_state = SCOPE_RUNNING; |
efdb0237 LP |
564 | |
565 | unit_add_to_load_queue(u); | |
566 | unit_add_to_dbus_queue(u); | |
efdb0237 LP |
567 | } |
568 | ||
6c12b52e LP |
569 | static const char* const scope_result_table[_SCOPE_RESULT_MAX] = { |
570 | [SCOPE_SUCCESS] = "success", | |
571 | [SCOPE_FAILURE_RESOURCES] = "resources", | |
572 | [SCOPE_FAILURE_TIMEOUT] = "timeout", | |
573 | }; | |
574 | ||
575 | DEFINE_STRING_TABLE_LOOKUP(scope_result, ScopeResult); | |
576 | ||
577 | const UnitVTable scope_vtable = { | |
578 | .object_size = sizeof(Scope), | |
718db961 LP |
579 | .cgroup_context_offset = offsetof(Scope, cgroup_context), |
580 | .kill_context_offset = offsetof(Scope, kill_context), | |
581 | ||
6c12b52e LP |
582 | .sections = |
583 | "Unit\0" | |
584 | "Scope\0" | |
585 | "Install\0", | |
6c12b52e | 586 | .private_section = "Scope", |
6c12b52e | 587 | |
700e2d63 | 588 | .can_transient = true, |
1d9cc876 | 589 | .can_delegate = true, |
6c12b52e LP |
590 | |
591 | .init = scope_init, | |
592 | .load = scope_load, | |
593 | .done = scope_done, | |
594 | ||
595 | .coldplug = scope_coldplug, | |
596 | ||
597 | .dump = scope_dump, | |
598 | ||
599 | .start = scope_start, | |
600 | .stop = scope_stop, | |
601 | ||
602 | .kill = scope_kill, | |
603 | ||
68db7a3b ZJS |
604 | .get_timeout = scope_get_timeout, |
605 | ||
6c12b52e LP |
606 | .serialize = scope_serialize, |
607 | .deserialize_item = scope_deserialize_item, | |
608 | ||
609 | .active_state = scope_active_state, | |
610 | .sub_state_to_string = scope_sub_state_to_string, | |
611 | ||
a911bb9a LP |
612 | .sigchld_event = scope_sigchld_event, |
613 | ||
8bcca7e2 LP |
614 | .reset_failed = scope_reset_failed, |
615 | ||
6c12b52e LP |
616 | .notify_cgroup_empty = scope_notify_cgroup_empty_event, |
617 | ||
718db961 | 618 | .bus_vtable = bus_scope_vtable, |
6c12b52e LP |
619 | .bus_set_property = bus_scope_set_property, |
620 | .bus_commit_properties = bus_scope_commit_properties, | |
621 | ||
efdb0237 | 622 | .enumerate = scope_enumerate, |
6c12b52e | 623 | }; |