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d6c9574f | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
5cb5a6ff | 2 | |
a7334b09 LP |
3 | /*** |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
9 | under the terms of the GNU Lesser General Public License as published by |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
11 | (at your option) any later version. |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 16 | Lesser General Public License for more details. |
a7334b09 | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
5cb5a6ff | 22 | #include <errno.h> |
034c6ed7 | 23 | #include <signal.h> |
2c4104f0 | 24 | #include <unistd.h> |
5cb5a6ff | 25 | |
574634bc | 26 | #include "async.h" |
4b939747 | 27 | #include "manager.h" |
87f0e418 | 28 | #include "unit.h" |
5cb5a6ff LP |
29 | #include "service.h" |
30 | #include "load-fragment.h" | |
31 | #include "load-dropin.h" | |
034c6ed7 | 32 | #include "log.h" |
2c4104f0 | 33 | #include "strv.h" |
9e2f7c11 | 34 | #include "unit-name.h" |
41f9172f | 35 | #include "unit-printf.h" |
4139c1b2 | 36 | #include "dbus-service.h" |
514f4ef5 | 37 | #include "special.h" |
9a57c629 | 38 | #include "exit-status.h" |
f6a6225e | 39 | #include "def.h" |
9eb977db | 40 | #include "path-util.h" |
f6a6225e | 41 | #include "util.h" |
7f110ff9 | 42 | #include "utf8.h" |
4d1a6904 | 43 | #include "env-util.h" |
a5c32cff | 44 | #include "fileio.h" |
718db961 LP |
45 | #include "bus-error.h" |
46 | #include "bus-util.h" | |
e44da745 | 47 | #include "bus-kernel.h" |
6482f626 | 48 | #include "formats-util.h" |
0b452006 | 49 | #include "process-util.h" |
24882e06 | 50 | #include "signal-util.h" |
034c6ed7 | 51 | |
acbb0225 | 52 | static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = { |
87f0e418 LP |
53 | [SERVICE_DEAD] = UNIT_INACTIVE, |
54 | [SERVICE_START_PRE] = UNIT_ACTIVATING, | |
55 | [SERVICE_START] = UNIT_ACTIVATING, | |
56 | [SERVICE_START_POST] = UNIT_ACTIVATING, | |
57 | [SERVICE_RUNNING] = UNIT_ACTIVE, | |
80876c20 | 58 | [SERVICE_EXITED] = UNIT_ACTIVE, |
032ff4af | 59 | [SERVICE_RELOAD] = UNIT_RELOADING, |
87f0e418 | 60 | [SERVICE_STOP] = UNIT_DEACTIVATING, |
db2cb23b | 61 | [SERVICE_STOP_SIGABRT] = UNIT_DEACTIVATING, |
87f0e418 LP |
62 | [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, |
63 | [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
64 | [SERVICE_STOP_POST] = UNIT_DEACTIVATING, | |
65 | [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, | |
66 | [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
fdf20a31 | 67 | [SERVICE_FAILED] = UNIT_FAILED, |
6124958c | 68 | [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING |
034c6ed7 | 69 | }; |
5cb5a6ff | 70 | |
e056b01d LP |
71 | /* For Type=idle we never want to delay any other jobs, hence we |
72 | * consider idle jobs active as soon as we start working on them */ | |
73 | static const UnitActiveState state_translation_table_idle[_SERVICE_STATE_MAX] = { | |
74 | [SERVICE_DEAD] = UNIT_INACTIVE, | |
75 | [SERVICE_START_PRE] = UNIT_ACTIVE, | |
76 | [SERVICE_START] = UNIT_ACTIVE, | |
77 | [SERVICE_START_POST] = UNIT_ACTIVE, | |
78 | [SERVICE_RUNNING] = UNIT_ACTIVE, | |
79 | [SERVICE_EXITED] = UNIT_ACTIVE, | |
80 | [SERVICE_RELOAD] = UNIT_RELOADING, | |
81 | [SERVICE_STOP] = UNIT_DEACTIVATING, | |
db2cb23b | 82 | [SERVICE_STOP_SIGABRT] = UNIT_DEACTIVATING, |
e056b01d LP |
83 | [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, |
84 | [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
85 | [SERVICE_STOP_POST] = UNIT_DEACTIVATING, | |
86 | [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, | |
87 | [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
88 | [SERVICE_FAILED] = UNIT_FAILED, | |
89 | [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING | |
90 | }; | |
91 | ||
718db961 LP |
92 | static int service_dispatch_io(sd_event_source *source, int fd, uint32_t events, void *userdata); |
93 | static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); | |
94 | static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata); | |
95 | ||
842129f5 | 96 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f); |
308d72dc | 97 | static void service_enter_reload_by_notify(Service *s); |
842129f5 | 98 | |
a16e1123 LP |
99 | static void service_init(Unit *u) { |
100 | Service *s = SERVICE(u); | |
101 | ||
102 | assert(u); | |
ac155bb8 | 103 | assert(u->load_state == UNIT_STUB); |
a16e1123 | 104 | |
1f19a534 OS |
105 | s->timeout_start_usec = u->manager->default_timeout_start_usec; |
106 | s->timeout_stop_usec = u->manager->default_timeout_stop_usec; | |
107 | s->restart_usec = u->manager->default_restart_usec; | |
0b86feac | 108 | s->type = _SERVICE_TYPE_INVALID; |
a16e1123 | 109 | s->socket_fd = -1; |
e44da745 | 110 | s->bus_endpoint_fd = -1; |
3185a36b | 111 | s->guess_main_pid = true; |
a16e1123 | 112 | |
085afe36 | 113 | RATELIMIT_INIT(s->start_limit, u->manager->default_start_limit_interval, u->manager->default_start_limit_burst); |
a16e1123 LP |
114 | |
115 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
116 | } | |
117 | ||
5e94833f LP |
118 | static void service_unwatch_control_pid(Service *s) { |
119 | assert(s); | |
120 | ||
121 | if (s->control_pid <= 0) | |
122 | return; | |
123 | ||
124 | unit_unwatch_pid(UNIT(s), s->control_pid); | |
125 | s->control_pid = 0; | |
126 | } | |
127 | ||
128 | static void service_unwatch_main_pid(Service *s) { | |
129 | assert(s); | |
130 | ||
131 | if (s->main_pid <= 0) | |
132 | return; | |
133 | ||
134 | unit_unwatch_pid(UNIT(s), s->main_pid); | |
135 | s->main_pid = 0; | |
136 | } | |
137 | ||
3e52541e MS |
138 | static void service_unwatch_pid_file(Service *s) { |
139 | if (!s->pid_file_pathspec) | |
140 | return; | |
141 | ||
f2341e0a | 142 | log_unit_debug(UNIT(s), "Stopping watch for PID file %s", s->pid_file_pathspec->path); |
718db961 | 143 | path_spec_unwatch(s->pid_file_pathspec); |
3e52541e MS |
144 | path_spec_done(s->pid_file_pathspec); |
145 | free(s->pid_file_pathspec); | |
146 | s->pid_file_pathspec = NULL; | |
147 | } | |
148 | ||
5925dd3c | 149 | static int service_set_main_pid(Service *s, pid_t pid) { |
e55224ca LP |
150 | pid_t ppid; |
151 | ||
5925dd3c LP |
152 | assert(s); |
153 | ||
154 | if (pid <= 1) | |
155 | return -EINVAL; | |
156 | ||
157 | if (pid == getpid()) | |
158 | return -EINVAL; | |
159 | ||
7400b9d2 LP |
160 | if (s->main_pid == pid && s->main_pid_known) |
161 | return 0; | |
162 | ||
163 | if (s->main_pid != pid) { | |
164 | service_unwatch_main_pid(s); | |
165 | exec_status_start(&s->main_exec_status, pid); | |
166 | } | |
41efeaec | 167 | |
6dfa5494 LP |
168 | s->main_pid = pid; |
169 | s->main_pid_known = true; | |
170 | ||
171 | if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid()) { | |
f2341e0a | 172 | log_unit_warning(UNIT(s), "Supervising process "PID_FMT" which is not our child. We'll most likely not notice when it exits.", pid); |
6dfa5494 LP |
173 | s->main_pid_alien = true; |
174 | } else | |
175 | s->main_pid_alien = false; | |
5925dd3c LP |
176 | |
177 | return 0; | |
178 | } | |
179 | ||
4f2d528d LP |
180 | static void service_close_socket_fd(Service *s) { |
181 | assert(s); | |
182 | ||
574634bc | 183 | s->socket_fd = asynchronous_close(s->socket_fd); |
4f2d528d LP |
184 | } |
185 | ||
6cf6bbc2 LP |
186 | static void service_connection_unref(Service *s) { |
187 | assert(s); | |
188 | ||
9444b1f2 | 189 | if (!UNIT_ISSET(s->accept_socket)) |
6cf6bbc2 LP |
190 | return; |
191 | ||
57020a3a LP |
192 | socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket))); |
193 | unit_ref_unset(&s->accept_socket); | |
6cf6bbc2 LP |
194 | } |
195 | ||
a6927d7f MO |
196 | static void service_stop_watchdog(Service *s) { |
197 | assert(s); | |
198 | ||
718db961 | 199 | s->watchdog_event_source = sd_event_source_unref(s->watchdog_event_source); |
842129f5 | 200 | s->watchdog_timestamp = DUAL_TIMESTAMP_NULL; |
a6927d7f MO |
201 | } |
202 | ||
842129f5 | 203 | static void service_start_watchdog(Service *s) { |
bb242b7b MO |
204 | int r; |
205 | ||
206 | assert(s); | |
207 | ||
842129f5 | 208 | if (s->watchdog_usec <= 0) |
bb242b7b MO |
209 | return; |
210 | ||
718db961 LP |
211 | if (s->watchdog_event_source) { |
212 | r = sd_event_source_set_time(s->watchdog_event_source, s->watchdog_timestamp.monotonic + s->watchdog_usec); | |
213 | if (r < 0) { | |
f2341e0a | 214 | log_unit_warning_errno(UNIT(s), r, "Failed to reset watchdog timer: %m"); |
718db961 LP |
215 | return; |
216 | } | |
217 | ||
842129f5 | 218 | r = sd_event_source_set_enabled(s->watchdog_event_source, SD_EVENT_ONESHOT); |
c4ef3317 | 219 | } else { |
6a0f1f6d LP |
220 | r = sd_event_add_time( |
221 | UNIT(s)->manager->event, | |
222 | &s->watchdog_event_source, | |
223 | CLOCK_MONOTONIC, | |
224 | s->watchdog_timestamp.monotonic + s->watchdog_usec, 0, | |
225 | service_dispatch_watchdog, s); | |
c4ef3317 | 226 | if (r < 0) { |
f2341e0a | 227 | log_unit_warning_errno(UNIT(s), r, "Failed to add watchdog timer: %m"); |
c4ef3317 LP |
228 | return; |
229 | } | |
230 | ||
7dfbe2e3 TG |
231 | (void) sd_event_source_set_description(s->watchdog_event_source, "service-watchdog"); |
232 | ||
c4ef3317 LP |
233 | /* Let's process everything else which might be a sign |
234 | * of living before we consider a service died. */ | |
235 | r = sd_event_source_set_priority(s->watchdog_event_source, SD_EVENT_PRIORITY_IDLE); | |
236 | } | |
718db961 | 237 | |
bb242b7b | 238 | if (r < 0) |
f2341e0a | 239 | log_unit_warning_errno(UNIT(s), r, "Failed to install watchdog timer: %m"); |
bb242b7b MO |
240 | } |
241 | ||
a6927d7f MO |
242 | static void service_reset_watchdog(Service *s) { |
243 | assert(s); | |
244 | ||
245 | dual_timestamp_get(&s->watchdog_timestamp); | |
842129f5 | 246 | service_start_watchdog(s); |
a6927d7f MO |
247 | } |
248 | ||
a354329f LP |
249 | static void service_fd_store_unlink(ServiceFDStore *fs) { |
250 | ||
251 | if (!fs) | |
252 | return; | |
253 | ||
254 | if (fs->service) { | |
255 | assert(fs->service->n_fd_store > 0); | |
256 | LIST_REMOVE(fd_store, fs->service->fd_store, fs); | |
257 | fs->service->n_fd_store--; | |
258 | } | |
259 | ||
260 | if (fs->event_source) { | |
261 | sd_event_source_set_enabled(fs->event_source, SD_EVENT_OFF); | |
262 | sd_event_source_unref(fs->event_source); | |
263 | } | |
264 | ||
265 | safe_close(fs->fd); | |
266 | free(fs); | |
267 | } | |
268 | ||
269 | static void service_release_resources(Unit *u) { | |
270 | Service *s = SERVICE(u); | |
271 | ||
272 | assert(s); | |
273 | ||
274 | if (!s->fd_store) | |
275 | return; | |
276 | ||
f2341e0a | 277 | log_unit_debug(u, "Releasing all resources."); |
a354329f LP |
278 | |
279 | while (s->fd_store) | |
280 | service_fd_store_unlink(s->fd_store); | |
281 | ||
282 | assert(s->n_fd_store == 0); | |
283 | } | |
284 | ||
87f0e418 LP |
285 | static void service_done(Unit *u) { |
286 | Service *s = SERVICE(u); | |
44d8db9e LP |
287 | |
288 | assert(s); | |
289 | ||
290 | free(s->pid_file); | |
291 | s->pid_file = NULL; | |
292 | ||
8c47c732 LP |
293 | free(s->status_text); |
294 | s->status_text = NULL; | |
295 | ||
efe6e7d3 MO |
296 | free(s->reboot_arg); |
297 | s->reboot_arg = NULL; | |
298 | ||
613b411c | 299 | s->exec_runtime = exec_runtime_unref(s->exec_runtime); |
e537352b | 300 | exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); |
44d8db9e | 301 | s->control_command = NULL; |
867b3b7d | 302 | s->main_command = NULL; |
44d8db9e | 303 | |
37520c1b LP |
304 | exit_status_set_free(&s->restart_prevent_status); |
305 | exit_status_set_free(&s->restart_force_status); | |
306 | exit_status_set_free(&s->success_status); | |
96342de6 | 307 | |
44d8db9e LP |
308 | /* This will leak a process, but at least no memory or any of |
309 | * our resources */ | |
5e94833f LP |
310 | service_unwatch_main_pid(s); |
311 | service_unwatch_control_pid(s); | |
3e52541e | 312 | service_unwatch_pid_file(s); |
44d8db9e | 313 | |
05e343b7 | 314 | if (s->bus_name) { |
ac155bb8 | 315 | unit_unwatch_bus_name(u, s->bus_name); |
05e343b7 LP |
316 | free(s->bus_name); |
317 | s->bus_name = NULL; | |
318 | } | |
319 | ||
e44da745 | 320 | s->bus_endpoint_fd = safe_close(s->bus_endpoint_fd); |
4f2d528d | 321 | service_close_socket_fd(s); |
6cf6bbc2 | 322 | service_connection_unref(s); |
4f2d528d | 323 | |
57020a3a | 324 | unit_ref_unset(&s->accept_socket); |
f976f3f6 | 325 | |
bb242b7b MO |
326 | service_stop_watchdog(s); |
327 | ||
718db961 | 328 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
a354329f LP |
329 | |
330 | service_release_resources(u); | |
718db961 LP |
331 | } |
332 | ||
2339fc93 LP |
333 | static int on_fd_store_io(sd_event_source *e, int fd, uint32_t revents, void *userdata) { |
334 | ServiceFDStore *fs = userdata; | |
335 | ||
336 | assert(e); | |
337 | assert(fs); | |
338 | ||
339 | /* If we get either EPOLLHUP or EPOLLERR, it's time to remove this entry from the fd store */ | |
340 | service_fd_store_unlink(fs); | |
341 | return 0; | |
342 | } | |
343 | ||
344 | static int service_add_fd_store(Service *s, int fd) { | |
345 | ServiceFDStore *fs; | |
346 | int r; | |
347 | ||
348 | assert(s); | |
349 | assert(fd >= 0); | |
350 | ||
351 | if (s->n_fd_store >= s->n_fd_store_max) | |
352 | return 0; | |
353 | ||
354 | LIST_FOREACH(fd_store, fs, s->fd_store) { | |
355 | r = same_fd(fs->fd, fd); | |
356 | if (r < 0) | |
357 | return r; | |
358 | if (r > 0) { | |
359 | /* Already included */ | |
360 | safe_close(fd); | |
361 | return 1; | |
362 | } | |
363 | } | |
364 | ||
365 | fs = new0(ServiceFDStore, 1); | |
366 | if (!fs) | |
367 | return -ENOMEM; | |
368 | ||
369 | fs->fd = fd; | |
370 | fs->service = s; | |
371 | ||
372 | r = sd_event_add_io(UNIT(s)->manager->event, &fs->event_source, fd, 0, on_fd_store_io, fs); | |
373 | if (r < 0) { | |
374 | free(fs); | |
375 | return r; | |
376 | } | |
377 | ||
7dfbe2e3 TG |
378 | (void) sd_event_source_set_description(fs->event_source, "service-fd-store"); |
379 | ||
2339fc93 LP |
380 | LIST_PREPEND(fd_store, s->fd_store, fs); |
381 | s->n_fd_store++; | |
382 | ||
383 | return 1; | |
384 | } | |
385 | ||
386 | static int service_add_fd_store_set(Service *s, FDSet *fds) { | |
387 | int r; | |
388 | ||
389 | assert(s); | |
390 | ||
391 | if (fdset_size(fds) <= 0) | |
392 | return 0; | |
393 | ||
394 | while (s->n_fd_store < s->n_fd_store_max) { | |
395 | _cleanup_close_ int fd = -1; | |
396 | ||
397 | fd = fdset_steal_first(fds); | |
398 | if (fd < 0) | |
399 | break; | |
400 | ||
401 | r = service_add_fd_store(s, fd); | |
402 | if (r < 0) | |
f2341e0a | 403 | return log_unit_error_errno(UNIT(s), r, "Couldn't add fd to fd store: %m"); |
2339fc93 LP |
404 | |
405 | if (r > 0) { | |
f2341e0a | 406 | log_unit_debug(UNIT(s), "Added fd to fd store."); |
2339fc93 LP |
407 | fd = -1; |
408 | } | |
409 | } | |
410 | ||
411 | if (fdset_size(fds) > 0) | |
f2341e0a | 412 | log_unit_warning(UNIT(s), "Tried to store more fds than FDStoreMax=%u allows, closing remaining.", s->n_fd_store_max); |
2339fc93 LP |
413 | |
414 | return 0; | |
415 | } | |
416 | ||
718db961 LP |
417 | static int service_arm_timer(Service *s, usec_t usec) { |
418 | int r; | |
419 | ||
420 | assert(s); | |
421 | ||
718db961 LP |
422 | if (s->timer_event_source) { |
423 | r = sd_event_source_set_time(s->timer_event_source, now(CLOCK_MONOTONIC) + usec); | |
424 | if (r < 0) | |
425 | return r; | |
426 | ||
427 | return sd_event_source_set_enabled(s->timer_event_source, SD_EVENT_ONESHOT); | |
428 | } | |
429 | ||
7dfbe2e3 | 430 | r = sd_event_add_time( |
6a0f1f6d LP |
431 | UNIT(s)->manager->event, |
432 | &s->timer_event_source, | |
433 | CLOCK_MONOTONIC, | |
434 | now(CLOCK_MONOTONIC) + usec, 0, | |
435 | service_dispatch_timer, s); | |
7dfbe2e3 TG |
436 | if (r < 0) |
437 | return r; | |
438 | ||
439 | (void) sd_event_source_set_description(s->timer_event_source, "service-timer"); | |
440 | ||
441 | return 0; | |
44d8db9e LP |
442 | } |
443 | ||
243b1432 LP |
444 | static int service_verify(Service *s) { |
445 | assert(s); | |
446 | ||
1124fe6f | 447 | if (UNIT(s)->load_state != UNIT_LOADED) |
243b1432 LP |
448 | return 0; |
449 | ||
96fb8242 | 450 | if (!s->exec_command[SERVICE_EXEC_START] && !s->exec_command[SERVICE_EXEC_STOP]) { |
f2341e0a | 451 | log_unit_error(UNIT(s), "Service lacks both ExecStart= and ExecStop= setting. Refusing."); |
243b1432 LP |
452 | return -EINVAL; |
453 | } | |
454 | ||
96fb8242 | 455 | if (s->type != SERVICE_ONESHOT && !s->exec_command[SERVICE_EXEC_START]) { |
f2341e0a | 456 | log_unit_error(UNIT(s), "Service has no ExecStart= setting, which is only allowed for Type=oneshot services. Refusing."); |
96fb8242 LP |
457 | return -EINVAL; |
458 | } | |
459 | ||
460 | if (!s->remain_after_exit && !s->exec_command[SERVICE_EXEC_START]) { | |
f2341e0a | 461 | log_unit_error(UNIT(s), "Service has no ExecStart= setting, which is only allowed for RemainAfterExit=yes services. Refusing."); |
96fb8242 LP |
462 | return -EINVAL; |
463 | } | |
464 | ||
465 | if (s->type != SERVICE_ONESHOT && s->exec_command[SERVICE_EXEC_START]->command_next) { | |
f2341e0a | 466 | log_unit_error(UNIT(s), "Service has more than one ExecStart= setting, which is only allowed for Type=oneshot services. Refusing."); |
6cf6bbc2 LP |
467 | return -EINVAL; |
468 | } | |
469 | ||
b0693d30 | 470 | if (s->type == SERVICE_ONESHOT && s->restart != SERVICE_RESTART_NO) { |
f2341e0a | 471 | log_unit_error(UNIT(s), "Service has Restart= setting other than no, which isn't allowed for Type=oneshot services. Refusing."); |
37520c1b LP |
472 | return -EINVAL; |
473 | } | |
474 | ||
55ebf98c | 475 | if (s->type == SERVICE_ONESHOT && !exit_status_set_is_empty(&s->restart_force_status)) { |
f2341e0a | 476 | log_unit_error(UNIT(s), "Service has RestartForceStatus= set, which isn't allowed for Type=oneshot services. Refusing."); |
b0693d30 MW |
477 | return -EINVAL; |
478 | } | |
479 | ||
05e343b7 | 480 | if (s->type == SERVICE_DBUS && !s->bus_name) { |
f2341e0a | 481 | log_unit_error(UNIT(s), "Service is of type D-Bus but no D-Bus service name has been specified. Refusing."); |
4d0e5dbd LP |
482 | return -EINVAL; |
483 | } | |
484 | ||
7e2668c6 | 485 | if (s->bus_name && s->type != SERVICE_DBUS) |
f2341e0a | 486 | log_unit_warning(UNIT(s), "Service has a D-Bus service name specified, but is not of type dbus. Ignoring."); |
7e2668c6 | 487 | |
ebc2259d | 488 | if (s->exec_context.pam_name && !(s->kill_context.kill_mode == KILL_CONTROL_GROUP || s->kill_context.kill_mode == KILL_MIXED)) { |
f2341e0a | 489 | log_unit_error(UNIT(s), "Service has PAM enabled. Kill mode must be set to 'control-group' or 'mixed'. Refusing."); |
05e343b7 LP |
490 | return -EINVAL; |
491 | } | |
492 | ||
243b1432 LP |
493 | return 0; |
494 | } | |
495 | ||
a40eb732 LP |
496 | static int service_add_default_dependencies(Service *s) { |
497 | int r; | |
498 | ||
499 | assert(s); | |
500 | ||
501 | /* Add a number of automatic dependencies useful for the | |
502 | * majority of services. */ | |
503 | ||
504 | /* First, pull in base system */ | |
8bb2d17d | 505 | r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true); |
fccd44ec KS |
506 | if (r < 0) |
507 | return r; | |
a40eb732 LP |
508 | |
509 | /* Second, activate normal shutdown */ | |
8545f7ce | 510 | return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true); |
a40eb732 LP |
511 | } |
512 | ||
4dfc092a LP |
513 | static void service_fix_output(Service *s) { |
514 | assert(s); | |
515 | ||
516 | /* If nothing has been explicitly configured, patch default | |
517 | * output in. If input is socket/tty we avoid this however, | |
518 | * since in that case we want output to default to the same | |
519 | * place as we read input from. */ | |
520 | ||
521 | if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT && | |
522 | s->exec_context.std_output == EXEC_OUTPUT_INHERIT && | |
523 | s->exec_context.std_input == EXEC_INPUT_NULL) | |
1124fe6f | 524 | s->exec_context.std_error = UNIT(s)->manager->default_std_error; |
4dfc092a LP |
525 | |
526 | if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT && | |
527 | s->exec_context.std_input == EXEC_INPUT_NULL) | |
1124fe6f | 528 | s->exec_context.std_output = UNIT(s)->manager->default_std_output; |
4dfc092a LP |
529 | } |
530 | ||
8545f7ce LP |
531 | static int service_add_extras(Service *s) { |
532 | int r; | |
533 | ||
534 | assert(s); | |
535 | ||
536 | if (s->type == _SERVICE_TYPE_INVALID) { | |
537 | /* Figure out a type automatically */ | |
538 | if (s->bus_name) | |
539 | s->type = SERVICE_DBUS; | |
540 | else if (s->exec_command[SERVICE_EXEC_START]) | |
541 | s->type = SERVICE_SIMPLE; | |
542 | else | |
543 | s->type = SERVICE_ONESHOT; | |
544 | } | |
545 | ||
546 | /* Oneshot services have disabled start timeout by default */ | |
547 | if (s->type == SERVICE_ONESHOT && !s->start_timeout_defined) | |
548 | s->timeout_start_usec = 0; | |
549 | ||
550 | service_fix_output(s); | |
551 | ||
552 | r = unit_patch_contexts(UNIT(s)); | |
553 | if (r < 0) | |
554 | return r; | |
555 | ||
556 | r = unit_add_exec_dependencies(UNIT(s), &s->exec_context); | |
557 | if (r < 0) | |
558 | return r; | |
559 | ||
560 | r = unit_add_default_slice(UNIT(s), &s->cgroup_context); | |
561 | if (r < 0) | |
562 | return r; | |
563 | ||
564 | if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE) | |
565 | s->notify_access = NOTIFY_MAIN; | |
566 | ||
567 | if (s->watchdog_usec > 0 && s->notify_access == NOTIFY_NONE) | |
568 | s->notify_access = NOTIFY_MAIN; | |
569 | ||
570 | if (s->bus_name) { | |
571 | const char *n; | |
572 | ||
6962fd3b MB |
573 | n = strjoina(s->bus_name, ".busname"); |
574 | r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, n, NULL, true); | |
8545f7ce LP |
575 | if (r < 0) |
576 | return r; | |
577 | ||
6962fd3b | 578 | r = unit_watch_bus_name(UNIT(s), s->bus_name); |
8545f7ce LP |
579 | if (r < 0) |
580 | return r; | |
581 | } | |
582 | ||
583 | if (UNIT(s)->default_dependencies) { | |
584 | r = service_add_default_dependencies(s); | |
585 | if (r < 0) | |
586 | return r; | |
587 | } | |
588 | ||
589 | return 0; | |
590 | } | |
591 | ||
e537352b | 592 | static int service_load(Unit *u) { |
e537352b | 593 | Service *s = SERVICE(u); |
8bb2d17d | 594 | int r; |
e537352b LP |
595 | |
596 | assert(s); | |
1e2e8133 | 597 | |
5cb5a6ff | 598 | /* Load a .service file */ |
c2756a68 LP |
599 | r = unit_load_fragment(u); |
600 | if (r < 0) | |
5cb5a6ff LP |
601 | return r; |
602 | ||
23a177ef | 603 | /* Still nothing found? Then let's give up */ |
ac155bb8 | 604 | if (u->load_state == UNIT_STUB) |
23a177ef | 605 | return -ENOENT; |
034c6ed7 | 606 | |
23a177ef | 607 | /* This is a new unit? Then let's add in some extras */ |
ac155bb8 | 608 | if (u->load_state == UNIT_LOADED) { |
c2756a68 LP |
609 | |
610 | /* We were able to load something, then let's add in | |
611 | * the dropin directories. */ | |
612 | r = unit_load_dropin(u); | |
613 | if (r < 0) | |
614 | return r; | |
615 | ||
8545f7ce LP |
616 | /* This is a new unit? Then let's add in some |
617 | * extras */ | |
618 | r = service_add_extras(s); | |
598459ce LP |
619 | if (r < 0) |
620 | return r; | |
8e274523 LP |
621 | } |
622 | ||
243b1432 | 623 | return service_verify(s); |
034c6ed7 LP |
624 | } |
625 | ||
87f0e418 | 626 | static void service_dump(Unit *u, FILE *f, const char *prefix) { |
5cb5a6ff | 627 | ServiceExecCommand c; |
87f0e418 | 628 | Service *s = SERVICE(u); |
47be870b | 629 | const char *prefix2; |
5cb5a6ff LP |
630 | |
631 | assert(s); | |
632 | ||
4c940960 | 633 | prefix = strempty(prefix); |
63c372cb | 634 | prefix2 = strjoina(prefix, "\t"); |
44d8db9e | 635 | |
5cb5a6ff | 636 | fprintf(f, |
81a2b7ce | 637 | "%sService State: %s\n" |
f42806df LP |
638 | "%sResult: %s\n" |
639 | "%sReload Result: %s\n" | |
81a2b7ce | 640 | "%sPermissionsStartOnly: %s\n" |
8e274523 | 641 | "%sRootDirectoryStartOnly: %s\n" |
02ee865a | 642 | "%sRemainAfterExit: %s\n" |
3185a36b | 643 | "%sGuessMainPID: %s\n" |
c952c6ec | 644 | "%sType: %s\n" |
2cf3143a | 645 | "%sRestart: %s\n" |
308d72dc LP |
646 | "%sNotifyAccess: %s\n" |
647 | "%sNotifyState: %s\n", | |
81a2b7ce | 648 | prefix, service_state_to_string(s->state), |
f42806df LP |
649 | prefix, service_result_to_string(s->result), |
650 | prefix, service_result_to_string(s->reload_result), | |
81a2b7ce | 651 | prefix, yes_no(s->permissions_start_only), |
8e274523 | 652 | prefix, yes_no(s->root_directory_start_only), |
02ee865a | 653 | prefix, yes_no(s->remain_after_exit), |
3185a36b | 654 | prefix, yes_no(s->guess_main_pid), |
c952c6ec | 655 | prefix, service_type_to_string(s->type), |
2cf3143a | 656 | prefix, service_restart_to_string(s->restart), |
308d72dc LP |
657 | prefix, notify_access_to_string(s->notify_access), |
658 | prefix, notify_state_to_string(s->notify_state)); | |
5cb5a6ff | 659 | |
70123e68 LP |
660 | if (s->control_pid > 0) |
661 | fprintf(f, | |
ccd06097 ZJS |
662 | "%sControl PID: "PID_FMT"\n", |
663 | prefix, s->control_pid); | |
70123e68 LP |
664 | |
665 | if (s->main_pid > 0) | |
666 | fprintf(f, | |
ccd06097 | 667 | "%sMain PID: "PID_FMT"\n" |
6dfa5494 LP |
668 | "%sMain PID Known: %s\n" |
669 | "%sMain PID Alien: %s\n", | |
ccd06097 | 670 | prefix, s->main_pid, |
6dfa5494 LP |
671 | prefix, yes_no(s->main_pid_known), |
672 | prefix, yes_no(s->main_pid_alien)); | |
70123e68 | 673 | |
034c6ed7 LP |
674 | if (s->pid_file) |
675 | fprintf(f, | |
676 | "%sPIDFile: %s\n", | |
677 | prefix, s->pid_file); | |
678 | ||
05e343b7 LP |
679 | if (s->bus_name) |
680 | fprintf(f, | |
681 | "%sBusName: %s\n" | |
682 | "%sBus Name Good: %s\n", | |
683 | prefix, s->bus_name, | |
684 | prefix, yes_no(s->bus_name_good)); | |
685 | ||
4819ff03 | 686 | kill_context_dump(&s->kill_context, f, prefix); |
5cb5a6ff LP |
687 | exec_context_dump(&s->exec_context, f, prefix); |
688 | ||
e537352b | 689 | for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) { |
5cb5a6ff | 690 | |
44d8db9e LP |
691 | if (!s->exec_command[c]) |
692 | continue; | |
693 | ||
40d50879 | 694 | fprintf(f, "%s-> %s:\n", |
94f04347 | 695 | prefix, service_exec_command_to_string(c)); |
44d8db9e LP |
696 | |
697 | exec_command_dump_list(s->exec_command[c], f, prefix2); | |
5cb5a6ff | 698 | } |
44d8db9e | 699 | |
8c47c732 LP |
700 | if (s->status_text) |
701 | fprintf(f, "%sStatus Text: %s\n", | |
702 | prefix, s->status_text); | |
a354329f LP |
703 | |
704 | if (s->n_fd_store_max > 0) { | |
705 | fprintf(f, | |
706 | "%sFile Descriptor Store Max: %u\n" | |
707 | "%sFile Descriptor Store Current: %u\n", | |
708 | prefix, s->n_fd_store_max, | |
709 | prefix, s->n_fd_store); | |
710 | } | |
5cb5a6ff LP |
711 | } |
712 | ||
c5419d42 | 713 | static int service_load_pid_file(Service *s, bool may_warn) { |
7fd1b19b | 714 | _cleanup_free_ char *k = NULL; |
034c6ed7 | 715 | int r; |
5925dd3c | 716 | pid_t pid; |
034c6ed7 LP |
717 | |
718 | assert(s); | |
719 | ||
034c6ed7 | 720 | if (!s->pid_file) |
13230d5d | 721 | return -ENOENT; |
034c6ed7 | 722 | |
117dcc57 ZJS |
723 | r = read_one_line_file(s->pid_file, &k); |
724 | if (r < 0) { | |
c5419d42 | 725 | if (may_warn) |
f2341e0a | 726 | log_unit_info_errno(UNIT(s), r, "PID file %s not readable (yet?) after %s: %m", s->pid_file, service_state_to_string(s->state)); |
034c6ed7 | 727 | return r; |
5375410b | 728 | } |
034c6ed7 | 729 | |
5925dd3c | 730 | r = parse_pid(k, &pid); |
bc41f93e ZJS |
731 | if (r < 0) { |
732 | if (may_warn) | |
f2341e0a | 733 | log_unit_info_errno(UNIT(s), r, "Failed to read PID from file %s: %m", s->pid_file); |
5925dd3c | 734 | return r; |
bc41f93e | 735 | } |
406eaf93 | 736 | |
9f5650ae | 737 | if (!pid_is_alive(pid)) { |
c5419d42 | 738 | if (may_warn) |
f2341e0a | 739 | log_unit_info(UNIT(s), "PID "PID_FMT" read from file %s does not exist or is a zombie.", pid, s->pid_file); |
e10c9985 YS |
740 | return -ESRCH; |
741 | } | |
742 | ||
db01f8b3 MS |
743 | if (s->main_pid_known) { |
744 | if (pid == s->main_pid) | |
745 | return 0; | |
746 | ||
f2341e0a | 747 | log_unit_debug(UNIT(s), "Main PID changing: "PID_FMT" -> "PID_FMT, s->main_pid, pid); |
8bb2d17d | 748 | |
db01f8b3 MS |
749 | service_unwatch_main_pid(s); |
750 | s->main_pid_known = false; | |
3a111838 | 751 | } else |
f2341e0a | 752 | log_unit_debug(UNIT(s), "Main PID loaded: "PID_FMT, pid); |
db01f8b3 | 753 | |
117dcc57 ZJS |
754 | r = service_set_main_pid(s, pid); |
755 | if (r < 0) | |
16f6025e LP |
756 | return r; |
757 | ||
117dcc57 | 758 | r = unit_watch_pid(UNIT(s), pid); |
bc41f93e | 759 | if (r < 0) { |
5925dd3c | 760 | /* FIXME: we need to do something here */ |
f2341e0a | 761 | log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" for service: %m", pid); |
5925dd3c | 762 | return r; |
bc41f93e | 763 | } |
034c6ed7 LP |
764 | |
765 | return 0; | |
766 | } | |
767 | ||
4fbf50b3 LP |
768 | static int service_search_main_pid(Service *s) { |
769 | pid_t pid; | |
770 | int r; | |
771 | ||
772 | assert(s); | |
773 | ||
3185a36b LP |
774 | /* If we know it anyway, don't ever fallback to unreliable |
775 | * heuristics */ | |
4fbf50b3 LP |
776 | if (s->main_pid_known) |
777 | return 0; | |
778 | ||
3185a36b LP |
779 | if (!s->guess_main_pid) |
780 | return 0; | |
781 | ||
4fbf50b3 LP |
782 | assert(s->main_pid <= 0); |
783 | ||
4ad49000 | 784 | pid = unit_search_main_pid(UNIT(s)); |
117dcc57 | 785 | if (pid <= 0) |
4fbf50b3 LP |
786 | return -ENOENT; |
787 | ||
f2341e0a | 788 | log_unit_debug(UNIT(s), "Main PID guessed: "PID_FMT, pid); |
117dcc57 ZJS |
789 | r = service_set_main_pid(s, pid); |
790 | if (r < 0) | |
4fbf50b3 LP |
791 | return r; |
792 | ||
117dcc57 | 793 | r = unit_watch_pid(UNIT(s), pid); |
8bb2d17d | 794 | if (r < 0) { |
4fbf50b3 | 795 | /* FIXME: we need to do something here */ |
f2341e0a | 796 | log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" from: %m", pid); |
8bb2d17d LP |
797 | return r; |
798 | } | |
799 | ||
800 | return 0; | |
4fbf50b3 LP |
801 | } |
802 | ||
034c6ed7 LP |
803 | static void service_set_state(Service *s, ServiceState state) { |
804 | ServiceState old_state; | |
e056b01d | 805 | const UnitActiveState *table; |
842129f5 | 806 | |
5cb5a6ff LP |
807 | assert(s); |
808 | ||
e056b01d LP |
809 | table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
810 | ||
034c6ed7 | 811 | old_state = s->state; |
5cb5a6ff | 812 | s->state = state; |
034c6ed7 | 813 | |
3a111838 MS |
814 | service_unwatch_pid_file(s); |
815 | ||
842129f5 LP |
816 | if (!IN_SET(state, |
817 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
818 | SERVICE_RELOAD, | |
57614eb1 | 819 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
842129f5 LP |
820 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL, |
821 | SERVICE_AUTO_RESTART)) | |
718db961 | 822 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
034c6ed7 | 823 | |
842129f5 LP |
824 | if (!IN_SET(state, |
825 | SERVICE_START, SERVICE_START_POST, | |
826 | SERVICE_RUNNING, SERVICE_RELOAD, | |
57614eb1 | 827 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf108e55 | 828 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
5e94833f | 829 | service_unwatch_main_pid(s); |
867b3b7d LP |
830 | s->main_command = NULL; |
831 | } | |
034c6ed7 | 832 | |
842129f5 LP |
833 | if (!IN_SET(state, |
834 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
835 | SERVICE_RELOAD, | |
57614eb1 | 836 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
842129f5 | 837 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
5e94833f | 838 | service_unwatch_control_pid(s); |
034c6ed7 | 839 | s->control_command = NULL; |
a16e1123 | 840 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; |
e537352b | 841 | } |
034c6ed7 | 842 | |
a911bb9a LP |
843 | if (IN_SET(state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART)) |
844 | unit_unwatch_all_pids(UNIT(s)); | |
845 | ||
842129f5 LP |
846 | if (!IN_SET(state, |
847 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
848 | SERVICE_RUNNING, SERVICE_RELOAD, | |
57614eb1 LP |
849 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
850 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL) && | |
1124fe6f | 851 | !(state == SERVICE_DEAD && UNIT(s)->job)) { |
4f2d528d | 852 | service_close_socket_fd(s); |
6cf6bbc2 LP |
853 | service_connection_unref(s); |
854 | } | |
4f2d528d | 855 | |
7596e9e1 | 856 | if (!IN_SET(state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
a6927d7f MO |
857 | service_stop_watchdog(s); |
858 | ||
f6023656 LP |
859 | /* For the inactive states unit_notify() will trim the cgroup, |
860 | * but for exit we have to do that ourselves... */ | |
1124fe6f | 861 | if (state == SERVICE_EXITED && UNIT(s)->manager->n_reloading <= 0) |
b1491eba | 862 | unit_destroy_cgroup_if_empty(UNIT(s)); |
f6023656 | 863 | |
9cd86184 OB |
864 | /* For remain_after_exit services, let's see if we can "release" the |
865 | * hold on the console, since unit_notify() only does that in case of | |
866 | * change of state */ | |
f49650ce LP |
867 | if (state == SERVICE_EXITED && |
868 | s->remain_after_exit && | |
9cd86184 | 869 | UNIT(s)->manager->n_on_console > 0) { |
f49650ce LP |
870 | |
871 | ExecContext *ec; | |
872 | ||
873 | ec = unit_get_exec_context(UNIT(s)); | |
9cd86184 OB |
874 | if (ec && exec_context_may_touch_console(ec)) { |
875 | Manager *m = UNIT(s)->manager; | |
876 | ||
877 | m->n_on_console --; | |
878 | if (m->n_on_console == 0) | |
879 | /* unset no_console_output flag, since the console is free */ | |
880 | m->no_console_output = false; | |
881 | } | |
882 | } | |
883 | ||
e537352b | 884 | if (old_state != state) |
f2341e0a | 885 | log_unit_debug(UNIT(s), "Changed %s -> %s", service_state_to_string(old_state), service_state_to_string(state)); |
acbb0225 | 886 | |
e056b01d | 887 | unit_notify(UNIT(s), table[old_state], table[state], s->reload_result == SERVICE_SUCCESS); |
f42806df | 888 | s->reload_result = SERVICE_SUCCESS; |
034c6ed7 LP |
889 | } |
890 | ||
be847e82 | 891 | static int service_coldplug(Unit *u) { |
a16e1123 LP |
892 | Service *s = SERVICE(u); |
893 | int r; | |
894 | ||
895 | assert(s); | |
896 | assert(s->state == SERVICE_DEAD); | |
897 | ||
898 | if (s->deserialized_state != s->state) { | |
899 | ||
bf108e55 LP |
900 | if (IN_SET(s->deserialized_state, |
901 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
902 | SERVICE_RELOAD, | |
57614eb1 | 903 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf108e55 | 904 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
92c1622e LP |
905 | |
906 | usec_t k; | |
6c12b52e | 907 | |
bf108e55 | 908 | k = IN_SET(s->deserialized_state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RELOAD) ? s->timeout_start_usec : s->timeout_stop_usec; |
e558336f | 909 | |
92c1622e LP |
910 | /* For the start/stop timeouts 0 means off */ |
911 | if (k > 0) { | |
912 | r = service_arm_timer(s, k); | |
36697dc0 | 913 | if (r < 0) |
e558336f LP |
914 | return r; |
915 | } | |
916 | } | |
a16e1123 | 917 | |
92c1622e LP |
918 | if (s->deserialized_state == SERVICE_AUTO_RESTART) { |
919 | ||
920 | /* The restart timeouts 0 means immediately */ | |
921 | r = service_arm_timer(s, s->restart_usec); | |
922 | if (r < 0) | |
923 | return r; | |
924 | } | |
925 | ||
9f5650ae | 926 | if (pid_is_unwaited(s->main_pid) && |
bf108e55 LP |
927 | ((s->deserialized_state == SERVICE_START && IN_SET(s->type, SERVICE_FORKING, SERVICE_DBUS, SERVICE_ONESHOT, SERVICE_NOTIFY)) || |
928 | IN_SET(s->deserialized_state, | |
929 | SERVICE_START, SERVICE_START_POST, | |
930 | SERVICE_RUNNING, SERVICE_RELOAD, | |
57614eb1 | 931 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf108e55 LP |
932 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL))) { |
933 | r = unit_watch_pid(UNIT(s), s->main_pid); | |
934 | if (r < 0) | |
935 | return r; | |
936 | } | |
a16e1123 | 937 | |
9f5650ae | 938 | if (pid_is_unwaited(s->control_pid) && |
bf108e55 LP |
939 | IN_SET(s->deserialized_state, |
940 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
941 | SERVICE_RELOAD, | |
57614eb1 | 942 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf108e55 LP |
943 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
944 | r = unit_watch_pid(UNIT(s), s->control_pid); | |
945 | if (r < 0) | |
946 | return r; | |
947 | } | |
a16e1123 | 948 | |
a911bb9a LP |
949 | if (!IN_SET(s->deserialized_state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART)) |
950 | unit_watch_all_pids(UNIT(s)); | |
951 | ||
842129f5 LP |
952 | if (IN_SET(s->deserialized_state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
953 | service_start_watchdog(s); | |
bb242b7b | 954 | |
a16e1123 LP |
955 | service_set_state(s, s->deserialized_state); |
956 | } | |
92c1622e | 957 | |
a16e1123 LP |
958 | return 0; |
959 | } | |
960 | ||
44d8db9e | 961 | static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) { |
a354329f LP |
962 | _cleanup_free_ int *rfds = NULL; |
963 | unsigned rn_fds = 0; | |
44d8db9e LP |
964 | Iterator i; |
965 | int r; | |
57020a3a | 966 | Unit *u; |
44d8db9e LP |
967 | |
968 | assert(s); | |
969 | assert(fds); | |
970 | assert(n_fds); | |
971 | ||
6cf6bbc2 LP |
972 | if (s->socket_fd >= 0) |
973 | return 0; | |
974 | ||
1124fe6f | 975 | SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) { |
44d8db9e LP |
976 | int *cfds; |
977 | unsigned cn_fds; | |
57020a3a LP |
978 | Socket *sock; |
979 | ||
ac155bb8 | 980 | if (u->type != UNIT_SOCKET) |
57020a3a LP |
981 | continue; |
982 | ||
983 | sock = SOCKET(u); | |
44d8db9e | 984 | |
117dcc57 ZJS |
985 | r = socket_collect_fds(sock, &cfds, &cn_fds); |
986 | if (r < 0) | |
a354329f | 987 | return r; |
44d8db9e | 988 | |
a354329f LP |
989 | if (cn_fds <= 0) { |
990 | free(cfds); | |
44d8db9e | 991 | continue; |
a354329f | 992 | } |
44d8db9e LP |
993 | |
994 | if (!rfds) { | |
995 | rfds = cfds; | |
996 | rn_fds = cn_fds; | |
997 | } else { | |
998 | int *t; | |
999 | ||
a354329f | 1000 | t = realloc(rfds, (rn_fds + cn_fds) * sizeof(int)); |
117dcc57 | 1001 | if (!t) { |
44d8db9e | 1002 | free(cfds); |
a354329f | 1003 | return -ENOMEM; |
44d8db9e LP |
1004 | } |
1005 | ||
a354329f LP |
1006 | memcpy(t + rn_fds, cfds, cn_fds * sizeof(int)); |
1007 | rfds = t; | |
1008 | rn_fds += cn_fds; | |
1009 | ||
44d8db9e LP |
1010 | free(cfds); |
1011 | ||
44d8db9e LP |
1012 | } |
1013 | } | |
1014 | ||
a354329f LP |
1015 | if (s->n_fd_store > 0) { |
1016 | ServiceFDStore *fs; | |
1017 | int *t; | |
1018 | ||
1019 | t = realloc(rfds, (rn_fds + s->n_fd_store) * sizeof(int)); | |
1020 | if (!t) | |
1021 | return -ENOMEM; | |
1022 | ||
1023 | rfds = t; | |
1024 | LIST_FOREACH(fd_store, fs, s->fd_store) | |
1025 | rfds[rn_fds++] = fs->fd; | |
1026 | } | |
1027 | ||
44d8db9e LP |
1028 | *fds = rfds; |
1029 | *n_fds = rn_fds; | |
3e33402a | 1030 | |
a354329f | 1031 | rfds = NULL; |
44d8db9e | 1032 | return 0; |
44d8db9e LP |
1033 | } |
1034 | ||
81a2b7ce LP |
1035 | static int service_spawn( |
1036 | Service *s, | |
1037 | ExecCommand *c, | |
21b2ce39 | 1038 | usec_t timeout, |
81a2b7ce LP |
1039 | bool pass_fds, |
1040 | bool apply_permissions, | |
1041 | bool apply_chroot, | |
1e3ad081 | 1042 | bool apply_tty_stdin, |
ecedd90f | 1043 | bool is_control, |
81a2b7ce LP |
1044 | pid_t *_pid) { |
1045 | ||
034c6ed7 LP |
1046 | pid_t pid; |
1047 | int r; | |
117dcc57 | 1048 | int *fds = NULL; |
7fd1b19b | 1049 | _cleanup_free_ int *fdsbuf = NULL; |
2105e76a | 1050 | unsigned n_fds = 0, n_env = 0; |
e44da745 | 1051 | _cleanup_free_ char *bus_endpoint_path = NULL; |
7fd1b19b | 1052 | _cleanup_strv_free_ char |
117dcc57 | 1053 | **argv = NULL, **final_env = NULL, **our_env = NULL; |
4ad49000 | 1054 | const char *path; |
9fa95f85 | 1055 | ExecParameters exec_params = { |
6f856a09 LP |
1056 | .apply_permissions = apply_permissions, |
1057 | .apply_chroot = apply_chroot, | |
1058 | .apply_tty_stdin = apply_tty_stdin, | |
1059 | .bus_endpoint_fd = -1, | |
16115b0a | 1060 | .selinux_context_net = s->socket_fd_selinux_context_net |
9fa95f85 | 1061 | }; |
034c6ed7 LP |
1062 | |
1063 | assert(s); | |
1064 | assert(c); | |
1065 | assert(_pid); | |
1066 | ||
5ad096b3 LP |
1067 | (void) unit_realize_cgroup(UNIT(s)); |
1068 | if (s->reset_cpu_usage) { | |
1069 | (void) unit_reset_cpu_usage(UNIT(s)); | |
1070 | s->reset_cpu_usage = false; | |
1071 | } | |
4ad49000 | 1072 | |
613b411c LP |
1073 | r = unit_setup_exec_runtime(UNIT(s)); |
1074 | if (r < 0) | |
1075 | goto fail; | |
1076 | ||
6cf6bbc2 LP |
1077 | if (pass_fds || |
1078 | s->exec_context.std_input == EXEC_INPUT_SOCKET || | |
1079 | s->exec_context.std_output == EXEC_OUTPUT_SOCKET || | |
1080 | s->exec_context.std_error == EXEC_OUTPUT_SOCKET) { | |
1081 | ||
4f2d528d LP |
1082 | if (s->socket_fd >= 0) { |
1083 | fds = &s->socket_fd; | |
1084 | n_fds = 1; | |
6cf6bbc2 | 1085 | } else { |
117dcc57 ZJS |
1086 | r = service_collect_fds(s, &fdsbuf, &n_fds); |
1087 | if (r < 0) | |
6cf6bbc2 LP |
1088 | goto fail; |
1089 | ||
1090 | fds = fdsbuf; | |
1091 | } | |
4f2d528d | 1092 | } |
44d8db9e | 1093 | |
21b2ce39 LP |
1094 | if (timeout > 0) { |
1095 | r = service_arm_timer(s, timeout); | |
92c1622e LP |
1096 | if (r < 0) |
1097 | goto fail; | |
1098 | } else | |
1099 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); | |
034c6ed7 | 1100 | |
19f6d710 LP |
1101 | r = unit_full_printf_strv(UNIT(s), c->argv, &argv); |
1102 | if (r < 0) | |
9e2f7c11 | 1103 | goto fail; |
9e2f7c11 | 1104 | |
3b1c5241 | 1105 | our_env = new0(char*, 6); |
97ae63e2 | 1106 | if (!our_env) { |
2105e76a LP |
1107 | r = -ENOMEM; |
1108 | goto fail; | |
1109 | } | |
c952c6ec | 1110 | |
a158dbf1 | 1111 | if (is_control ? s->notify_access == NOTIFY_ALL : s->notify_access != NOTIFY_NONE) |
1124fe6f | 1112 | if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) { |
c952c6ec LP |
1113 | r = -ENOMEM; |
1114 | goto fail; | |
1115 | } | |
1116 | ||
2105e76a | 1117 | if (s->main_pid > 0) |
ccd06097 | 1118 | if (asprintf(our_env + n_env++, "MAINPID="PID_FMT, s->main_pid) < 0) { |
c952c6ec LP |
1119 | r = -ENOMEM; |
1120 | goto fail; | |
1121 | } | |
2105e76a | 1122 | |
b2c23da8 | 1123 | if (UNIT(s)->manager->running_as != MANAGER_SYSTEM) |
ccd06097 | 1124 | if (asprintf(our_env + n_env++, "MANAGERPID="PID_FMT, getpid()) < 0) { |
97ae63e2 LP |
1125 | r = -ENOMEM; |
1126 | goto fail; | |
1127 | } | |
1128 | ||
3b1c5241 SL |
1129 | if (UNIT_DEREF(s->accept_socket)) { |
1130 | union sockaddr_union sa; | |
1131 | socklen_t salen = sizeof(sa); | |
1132 | ||
1133 | r = getpeername(s->socket_fd, &sa.sa, &salen); | |
1134 | if (r < 0) { | |
1135 | r = -errno; | |
1136 | goto fail; | |
1137 | } | |
1138 | ||
1139 | if (IN_SET(sa.sa.sa_family, AF_INET, AF_INET6)) { | |
1140 | _cleanup_free_ char *addr = NULL; | |
1141 | char *t; | |
1142 | int port; | |
1143 | ||
1144 | r = sockaddr_pretty(&sa.sa, salen, true, false, &addr); | |
1145 | if (r < 0) | |
1146 | goto fail; | |
1147 | ||
1148 | t = strappend("REMOTE_ADDR=", addr); | |
1149 | if (!t) { | |
1150 | r = -ENOMEM; | |
1151 | goto fail; | |
1152 | } | |
1153 | our_env[n_env++] = t; | |
1154 | ||
1155 | port = sockaddr_port(&sa.sa); | |
1156 | if (port < 0) { | |
1157 | r = port; | |
1158 | goto fail; | |
1159 | } | |
1160 | ||
1161 | if (asprintf(&t, "REMOTE_PORT=%u", port) < 0) { | |
1162 | r = -ENOMEM; | |
1163 | goto fail; | |
1164 | } | |
1165 | our_env[n_env++] = t; | |
1166 | } | |
1167 | } | |
1168 | ||
97ae63e2 LP |
1169 | final_env = strv_env_merge(2, UNIT(s)->manager->environment, our_env, NULL); |
1170 | if (!final_env) { | |
2105e76a LP |
1171 | r = -ENOMEM; |
1172 | goto fail; | |
1173 | } | |
c952c6ec | 1174 | |
4ad49000 | 1175 | if (is_control && UNIT(s)->cgroup_path) { |
63c372cb | 1176 | path = strjoina(UNIT(s)->cgroup_path, "/control"); |
4ad49000 LP |
1177 | cg_create(SYSTEMD_CGROUP_CONTROLLER, path); |
1178 | } else | |
1179 | path = UNIT(s)->cgroup_path; | |
1180 | ||
e44da745 | 1181 | if (s->exec_context.bus_endpoint) { |
b2c23da8 | 1182 | r = bus_kernel_create_endpoint(UNIT(s)->manager->running_as == MANAGER_SYSTEM ? "system" : "user", |
e44da745 DM |
1183 | UNIT(s)->id, &bus_endpoint_path); |
1184 | if (r < 0) | |
1185 | goto fail; | |
1186 | ||
1187 | /* Pass the fd to the exec_params so that the child process can upload the policy. | |
1188 | * Keep a reference to the fd in the service, so the endpoint is kept alive as long | |
1189 | * as the service is running. */ | |
1190 | exec_params.bus_endpoint_fd = s->bus_endpoint_fd = r; | |
1191 | } | |
e44da745 | 1192 | |
9fa95f85 DM |
1193 | exec_params.argv = argv; |
1194 | exec_params.fds = fds; | |
1195 | exec_params.n_fds = n_fds; | |
1196 | exec_params.environment = final_env; | |
1197 | exec_params.confirm_spawn = UNIT(s)->manager->confirm_spawn; | |
1198 | exec_params.cgroup_supported = UNIT(s)->manager->cgroup_supported; | |
1199 | exec_params.cgroup_path = path; | |
a931ad47 | 1200 | exec_params.cgroup_delegate = s->cgroup_context.delegate; |
9fa95f85 | 1201 | exec_params.runtime_prefix = manager_get_runtime_prefix(UNIT(s)->manager); |
9fa95f85 | 1202 | exec_params.watchdog_usec = s->watchdog_usec; |
e44da745 | 1203 | exec_params.bus_endpoint_path = bus_endpoint_path; |
9fa95f85 DM |
1204 | if (s->type == SERVICE_IDLE) |
1205 | exec_params.idle_pipe = UNIT(s)->manager->idle_pipe; | |
1206 | ||
f2341e0a LP |
1207 | r = exec_spawn(UNIT(s), |
1208 | c, | |
9e2f7c11 | 1209 | &s->exec_context, |
9fa95f85 | 1210 | &exec_params, |
613b411c | 1211 | s->exec_runtime, |
9e2f7c11 | 1212 | &pid); |
9e2f7c11 | 1213 | if (r < 0) |
034c6ed7 LP |
1214 | goto fail; |
1215 | ||
117dcc57 ZJS |
1216 | r = unit_watch_pid(UNIT(s), pid); |
1217 | if (r < 0) | |
034c6ed7 LP |
1218 | /* FIXME: we need to do something here */ |
1219 | goto fail; | |
1220 | ||
1221 | *_pid = pid; | |
1222 | ||
5cb5a6ff | 1223 | return 0; |
034c6ed7 LP |
1224 | |
1225 | fail: | |
1226 | if (timeout) | |
718db961 | 1227 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
034c6ed7 LP |
1228 | |
1229 | return r; | |
1230 | } | |
1231 | ||
80876c20 LP |
1232 | static int main_pid_good(Service *s) { |
1233 | assert(s); | |
1234 | ||
1235 | /* Returns 0 if the pid is dead, 1 if it is good, -1 if we | |
1236 | * don't know */ | |
1237 | ||
fc08079e | 1238 | /* If we know the pid file, then let's just check if it is |
80876c20 | 1239 | * still valid */ |
6dfa5494 LP |
1240 | if (s->main_pid_known) { |
1241 | ||
1242 | /* If it's an alien child let's check if it is still | |
1243 | * alive ... */ | |
62220cf7 | 1244 | if (s->main_pid_alien && s->main_pid > 0) |
9f5650ae | 1245 | return pid_is_alive(s->main_pid); |
6dfa5494 LP |
1246 | |
1247 | /* .. otherwise assume we'll get a SIGCHLD for it, | |
1248 | * which we really should wait for to collect exit | |
1249 | * status and code */ | |
80876c20 | 1250 | return s->main_pid > 0; |
6dfa5494 | 1251 | } |
80876c20 LP |
1252 | |
1253 | /* We don't know the pid */ | |
1254 | return -EAGAIN; | |
1255 | } | |
1256 | ||
44a6b1b6 | 1257 | _pure_ static int control_pid_good(Service *s) { |
80876c20 LP |
1258 | assert(s); |
1259 | ||
1260 | return s->control_pid > 0; | |
1261 | } | |
1262 | ||
1263 | static int cgroup_good(Service *s) { | |
1264 | int r; | |
1265 | ||
1266 | assert(s); | |
1267 | ||
4ad49000 LP |
1268 | if (!UNIT(s)->cgroup_path) |
1269 | return 0; | |
1270 | ||
1271 | r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, UNIT(s)->cgroup_path, true); | |
117dcc57 | 1272 | if (r < 0) |
80876c20 LP |
1273 | return r; |
1274 | ||
1275 | return !r; | |
1276 | } | |
1277 | ||
a509f0e6 LP |
1278 | static bool service_shall_restart(Service *s) { |
1279 | assert(s); | |
1280 | ||
1281 | /* Don't restart after manual stops */ | |
1282 | if (s->forbid_restart) | |
1283 | return false; | |
1284 | ||
1285 | /* Never restart if this is configured as special exception */ | |
1286 | if (exit_status_set_test(&s->restart_prevent_status, s->main_exec_status.code, s->main_exec_status.status)) | |
1287 | return false; | |
1288 | ||
1289 | /* Restart if the exit code/status are configured as restart triggers */ | |
1290 | if (exit_status_set_test(&s->restart_force_status, s->main_exec_status.code, s->main_exec_status.status)) | |
1291 | return true; | |
1292 | ||
1293 | switch (s->restart) { | |
1294 | ||
1295 | case SERVICE_RESTART_NO: | |
1296 | return false; | |
1297 | ||
1298 | case SERVICE_RESTART_ALWAYS: | |
1299 | return true; | |
1300 | ||
1301 | case SERVICE_RESTART_ON_SUCCESS: | |
1302 | return s->result == SERVICE_SUCCESS; | |
1303 | ||
1304 | case SERVICE_RESTART_ON_FAILURE: | |
1305 | return s->result != SERVICE_SUCCESS; | |
1306 | ||
1307 | case SERVICE_RESTART_ON_ABNORMAL: | |
1308 | return !IN_SET(s->result, SERVICE_SUCCESS, SERVICE_FAILURE_EXIT_CODE); | |
1309 | ||
1310 | case SERVICE_RESTART_ON_WATCHDOG: | |
1311 | return s->result == SERVICE_FAILURE_WATCHDOG; | |
1312 | ||
1313 | case SERVICE_RESTART_ON_ABORT: | |
1314 | return IN_SET(s->result, SERVICE_FAILURE_SIGNAL, SERVICE_FAILURE_CORE_DUMP); | |
1315 | ||
1316 | default: | |
1317 | assert_not_reached("unknown restart setting"); | |
1318 | } | |
1319 | } | |
1320 | ||
f42806df | 1321 | static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) { |
034c6ed7 LP |
1322 | int r; |
1323 | assert(s); | |
1324 | ||
f42806df LP |
1325 | if (f != SERVICE_SUCCESS) |
1326 | s->result = f; | |
034c6ed7 | 1327 | |
0c7f15b3 MS |
1328 | service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD); |
1329 | ||
2928b0a8 | 1330 | if (s->result != SERVICE_SUCCESS) { |
f2341e0a | 1331 | log_unit_warning(UNIT(s), "Failed with result '%s'.", service_result_to_string(s->result)); |
2928b0a8 LP |
1332 | failure_action(UNIT(s)->manager, s->failure_action, s->reboot_arg); |
1333 | } | |
93ae25e6 | 1334 | |
a509f0e6 | 1335 | if (allow_restart && service_shall_restart(s)) { |
034c6ed7 | 1336 | |
718db961 | 1337 | r = service_arm_timer(s, s->restart_usec); |
f42806df | 1338 | if (r < 0) |
034c6ed7 LP |
1339 | goto fail; |
1340 | ||
1341 | service_set_state(s, SERVICE_AUTO_RESTART); | |
0c7f15b3 | 1342 | } |
034c6ed7 | 1343 | |
f2341e0a | 1344 | /* The next restart might not be a manual stop, hence reset the flag indicating manual stops */ |
47342320 LP |
1345 | s->forbid_restart = false; |
1346 | ||
e66cf1a3 | 1347 | /* We want fresh tmpdirs in case service is started again immediately */ |
613b411c LP |
1348 | exec_runtime_destroy(s->exec_runtime); |
1349 | s->exec_runtime = exec_runtime_unref(s->exec_runtime); | |
c17ec25e | 1350 | |
e66cf1a3 LP |
1351 | /* Also, remove the runtime directory in */ |
1352 | exec_context_destroy_runtime_directory(&s->exec_context, manager_get_runtime_prefix(UNIT(s)->manager)); | |
1353 | ||
9285c9ff LN |
1354 | /* Try to delete the pid file. At this point it will be |
1355 | * out-of-date, and some software might be confused by it, so | |
1356 | * let's remove it. */ | |
1357 | if (s->pid_file) | |
1358 | unlink_noerrno(s->pid_file); | |
1359 | ||
034c6ed7 LP |
1360 | return; |
1361 | ||
1362 | fail: | |
f2341e0a | 1363 | log_unit_warning_errno(UNIT(s), r, "Failed to run install restart timer: %m"); |
f42806df | 1364 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); |
034c6ed7 LP |
1365 | } |
1366 | ||
f42806df | 1367 | static void service_enter_stop_post(Service *s, ServiceResult f) { |
034c6ed7 LP |
1368 | int r; |
1369 | assert(s); | |
1370 | ||
f42806df LP |
1371 | if (f != SERVICE_SUCCESS) |
1372 | s->result = f; | |
034c6ed7 | 1373 | |
5e94833f | 1374 | service_unwatch_control_pid(s); |
a911bb9a | 1375 | unit_watch_all_pids(UNIT(s)); |
5e94833f | 1376 | |
117dcc57 ZJS |
1377 | s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST]; |
1378 | if (s->control_command) { | |
867b3b7d LP |
1379 | s->control_command_id = SERVICE_EXEC_STOP_POST; |
1380 | ||
ecedd90f LP |
1381 | r = service_spawn(s, |
1382 | s->control_command, | |
21b2ce39 | 1383 | s->timeout_stop_usec, |
ecedd90f LP |
1384 | false, |
1385 | !s->permissions_start_only, | |
1386 | !s->root_directory_start_only, | |
1387 | true, | |
ecedd90f LP |
1388 | true, |
1389 | &s->control_pid); | |
1390 | if (r < 0) | |
034c6ed7 LP |
1391 | goto fail; |
1392 | ||
80876c20 LP |
1393 | service_set_state(s, SERVICE_STOP_POST); |
1394 | } else | |
ac84d1fb | 1395 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
1396 | |
1397 | return; | |
1398 | ||
1399 | fail: | |
f2341e0a | 1400 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop-post' task: %m"); |
f42806df | 1401 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1402 | } |
1403 | ||
4940c0b0 LP |
1404 | static int state_to_kill_operation(ServiceState state) { |
1405 | switch (state) { | |
1406 | ||
1407 | case SERVICE_STOP_SIGABRT: | |
1408 | return KILL_ABORT; | |
1409 | ||
1410 | case SERVICE_STOP_SIGTERM: | |
1411 | case SERVICE_FINAL_SIGTERM: | |
1412 | return KILL_TERMINATE; | |
1413 | ||
1414 | case SERVICE_STOP_SIGKILL: | |
1415 | case SERVICE_FINAL_SIGKILL: | |
1416 | return KILL_KILL; | |
1417 | ||
1418 | default: | |
1419 | return _KILL_OPERATION_INVALID; | |
1420 | } | |
1421 | } | |
1422 | ||
f42806df | 1423 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) { |
034c6ed7 | 1424 | int r; |
034c6ed7 LP |
1425 | |
1426 | assert(s); | |
1427 | ||
f42806df LP |
1428 | if (f != SERVICE_SUCCESS) |
1429 | s->result = f; | |
034c6ed7 | 1430 | |
a911bb9a LP |
1431 | unit_watch_all_pids(UNIT(s)); |
1432 | ||
cd2086fe LP |
1433 | r = unit_kill_context( |
1434 | UNIT(s), | |
1435 | &s->kill_context, | |
4940c0b0 | 1436 | state_to_kill_operation(state), |
cd2086fe LP |
1437 | s->main_pid, |
1438 | s->control_pid, | |
1439 | s->main_pid_alien); | |
ac84d1fb | 1440 | |
cd2086fe LP |
1441 | if (r < 0) |
1442 | goto fail; | |
034c6ed7 | 1443 | |
cd2086fe | 1444 | if (r > 0) { |
d568a335 | 1445 | if (s->timeout_stop_usec > 0) { |
718db961 | 1446 | r = service_arm_timer(s, s->timeout_stop_usec); |
d568a335 | 1447 | if (r < 0) |
e558336f | 1448 | goto fail; |
d568a335 | 1449 | } |
d6ea93e3 | 1450 | |
80876c20 | 1451 | service_set_state(s, state); |
1db0db4b | 1452 | } else if (IN_SET(state, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM) && s->kill_context.send_sigkill) |
ac84d1fb | 1453 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_SUCCESS); |
1db0db4b | 1454 | else if (IN_SET(state, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 1455 | service_enter_stop_post(s, SERVICE_SUCCESS); |
1db0db4b | 1456 | else if (state == SERVICE_FINAL_SIGTERM && s->kill_context.send_sigkill) |
ac84d1fb | 1457 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_SUCCESS); |
80876c20 | 1458 | else |
f42806df | 1459 | service_enter_dead(s, SERVICE_SUCCESS, true); |
034c6ed7 LP |
1460 | |
1461 | return; | |
1462 | ||
1463 | fail: | |
f2341e0a | 1464 | log_unit_warning_errno(UNIT(s), r, "Failed to kill processes: %m"); |
034c6ed7 | 1465 | |
a00973af | 1466 | if (IN_SET(state, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 1467 | service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES); |
034c6ed7 | 1468 | else |
f42806df | 1469 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
034c6ed7 LP |
1470 | } |
1471 | ||
308d72dc LP |
1472 | static void service_enter_stop_by_notify(Service *s) { |
1473 | assert(s); | |
1474 | ||
1475 | unit_watch_all_pids(UNIT(s)); | |
1476 | ||
1477 | if (s->timeout_stop_usec > 0) | |
1478 | service_arm_timer(s, s->timeout_stop_usec); | |
1479 | ||
6041a7ee MS |
1480 | /* The service told us it's stopping, so it's as if we SIGTERM'd it. */ |
1481 | service_set_state(s, SERVICE_STOP_SIGTERM); | |
308d72dc LP |
1482 | } |
1483 | ||
f42806df | 1484 | static void service_enter_stop(Service *s, ServiceResult f) { |
034c6ed7 | 1485 | int r; |
5925dd3c | 1486 | |
034c6ed7 LP |
1487 | assert(s); |
1488 | ||
f42806df LP |
1489 | if (f != SERVICE_SUCCESS) |
1490 | s->result = f; | |
034c6ed7 | 1491 | |
5e94833f | 1492 | service_unwatch_control_pid(s); |
a911bb9a | 1493 | unit_watch_all_pids(UNIT(s)); |
5e94833f | 1494 | |
117dcc57 ZJS |
1495 | s->control_command = s->exec_command[SERVICE_EXEC_STOP]; |
1496 | if (s->control_command) { | |
867b3b7d LP |
1497 | s->control_command_id = SERVICE_EXEC_STOP; |
1498 | ||
ecedd90f LP |
1499 | r = service_spawn(s, |
1500 | s->control_command, | |
21b2ce39 | 1501 | s->timeout_stop_usec, |
ecedd90f LP |
1502 | false, |
1503 | !s->permissions_start_only, | |
1504 | !s->root_directory_start_only, | |
1505 | false, | |
ecedd90f LP |
1506 | true, |
1507 | &s->control_pid); | |
1508 | if (r < 0) | |
034c6ed7 LP |
1509 | goto fail; |
1510 | ||
80876c20 LP |
1511 | service_set_state(s, SERVICE_STOP); |
1512 | } else | |
f42806df | 1513 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
1514 | |
1515 | return; | |
1516 | ||
1517 | fail: | |
f2341e0a | 1518 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop' task: %m"); |
f42806df | 1519 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1520 | } |
1521 | ||
f42806df | 1522 | static void service_enter_running(Service *s, ServiceResult f) { |
4eab639f | 1523 | int main_pid_ok, cgroup_ok; |
80876c20 LP |
1524 | assert(s); |
1525 | ||
f42806df LP |
1526 | if (f != SERVICE_SUCCESS) |
1527 | s->result = f; | |
80876c20 | 1528 | |
4eab639f LP |
1529 | main_pid_ok = main_pid_good(s); |
1530 | cgroup_ok = cgroup_good(s); | |
1531 | ||
1532 | if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) && | |
308d72dc LP |
1533 | (s->bus_name_good || s->type != SERVICE_DBUS)) { |
1534 | ||
1535 | /* If there are any queued up sd_notify() | |
1536 | * notifications, process them now */ | |
1537 | if (s->notify_state == NOTIFY_RELOADING) | |
1538 | service_enter_reload_by_notify(s); | |
1539 | else if (s->notify_state == NOTIFY_STOPPING) | |
1540 | service_enter_stop_by_notify(s); | |
1541 | else | |
1542 | service_set_state(s, SERVICE_RUNNING); | |
1543 | ||
1544 | } else if (s->remain_after_exit) | |
80876c20 LP |
1545 | service_set_state(s, SERVICE_EXITED); |
1546 | else | |
f42806df | 1547 | service_enter_stop(s, SERVICE_SUCCESS); |
80876c20 LP |
1548 | } |
1549 | ||
034c6ed7 LP |
1550 | static void service_enter_start_post(Service *s) { |
1551 | int r; | |
1552 | assert(s); | |
1553 | ||
5e94833f | 1554 | service_unwatch_control_pid(s); |
842129f5 | 1555 | service_reset_watchdog(s); |
bb242b7b | 1556 | |
117dcc57 ZJS |
1557 | s->control_command = s->exec_command[SERVICE_EXEC_START_POST]; |
1558 | if (s->control_command) { | |
867b3b7d LP |
1559 | s->control_command_id = SERVICE_EXEC_START_POST; |
1560 | ||
ecedd90f LP |
1561 | r = service_spawn(s, |
1562 | s->control_command, | |
21b2ce39 | 1563 | s->timeout_start_usec, |
ecedd90f LP |
1564 | false, |
1565 | !s->permissions_start_only, | |
1566 | !s->root_directory_start_only, | |
1567 | false, | |
ecedd90f LP |
1568 | true, |
1569 | &s->control_pid); | |
1570 | if (r < 0) | |
034c6ed7 LP |
1571 | goto fail; |
1572 | ||
80876c20 LP |
1573 | service_set_state(s, SERVICE_START_POST); |
1574 | } else | |
f42806df | 1575 | service_enter_running(s, SERVICE_SUCCESS); |
034c6ed7 LP |
1576 | |
1577 | return; | |
1578 | ||
1579 | fail: | |
f2341e0a | 1580 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-post' task: %m"); |
f42806df | 1581 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1582 | } |
1583 | ||
4ad49000 LP |
1584 | static void service_kill_control_processes(Service *s) { |
1585 | char *p; | |
1586 | ||
1587 | if (!UNIT(s)->cgroup_path) | |
1588 | return; | |
1589 | ||
63c372cb | 1590 | p = strjoina(UNIT(s)->cgroup_path, "/control"); |
4ad49000 LP |
1591 | cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, p, SIGKILL, true, true, true, NULL); |
1592 | } | |
1593 | ||
034c6ed7 | 1594 | static void service_enter_start(Service *s) { |
4ad49000 | 1595 | ExecCommand *c; |
034c6ed7 LP |
1596 | pid_t pid; |
1597 | int r; | |
1598 | ||
1599 | assert(s); | |
1600 | ||
41efeaec LP |
1601 | service_unwatch_control_pid(s); |
1602 | service_unwatch_main_pid(s); | |
80876c20 | 1603 | |
8f53a7b8 LP |
1604 | /* We want to ensure that nobody leaks processes from |
1605 | * START_PRE here, so let's go on a killing spree, People | |
1606 | * should not spawn long running processes from START_PRE. */ | |
4ad49000 | 1607 | service_kill_control_processes(s); |
8f53a7b8 | 1608 | |
867b3b7d LP |
1609 | if (s->type == SERVICE_FORKING) { |
1610 | s->control_command_id = SERVICE_EXEC_START; | |
1611 | c = s->control_command = s->exec_command[SERVICE_EXEC_START]; | |
1612 | ||
1613 | s->main_command = NULL; | |
1614 | } else { | |
1615 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
1616 | s->control_command = NULL; | |
1617 | ||
1618 | c = s->main_command = s->exec_command[SERVICE_EXEC_START]; | |
1619 | } | |
34e9ba66 | 1620 | |
96fb8242 LP |
1621 | if (!c) { |
1622 | assert(s->type == SERVICE_ONESHOT); | |
1623 | service_enter_start_post(s); | |
1624 | return; | |
1625 | } | |
1626 | ||
ecedd90f LP |
1627 | r = service_spawn(s, |
1628 | c, | |
21b2ce39 | 1629 | IN_SET(s->type, SERVICE_FORKING, SERVICE_DBUS, SERVICE_NOTIFY, SERVICE_ONESHOT) ? s->timeout_start_usec : 0, |
ecedd90f LP |
1630 | true, |
1631 | true, | |
1632 | true, | |
1633 | true, | |
ecedd90f LP |
1634 | false, |
1635 | &pid); | |
1636 | if (r < 0) | |
034c6ed7 LP |
1637 | goto fail; |
1638 | ||
f2b68789 | 1639 | if (s->type == SERVICE_SIMPLE || s->type == SERVICE_IDLE) { |
034c6ed7 LP |
1640 | /* For simple services we immediately start |
1641 | * the START_POST binaries. */ | |
1642 | ||
5925dd3c | 1643 | service_set_main_pid(s, pid); |
034c6ed7 LP |
1644 | service_enter_start_post(s); |
1645 | ||
1646 | } else if (s->type == SERVICE_FORKING) { | |
1647 | ||
1648 | /* For forking services we wait until the start | |
1649 | * process exited. */ | |
1650 | ||
e55224ca | 1651 | s->control_pid = pid; |
80876c20 LP |
1652 | service_set_state(s, SERVICE_START); |
1653 | ||
34e9ba66 | 1654 | } else if (s->type == SERVICE_ONESHOT || |
8c47c732 LP |
1655 | s->type == SERVICE_DBUS || |
1656 | s->type == SERVICE_NOTIFY) { | |
7d55e835 | 1657 | |
34e9ba66 | 1658 | /* For oneshot services we wait until the start |
7d55e835 LP |
1659 | * process exited, too, but it is our main process. */ |
1660 | ||
05e343b7 | 1661 | /* For D-Bus services we know the main pid right away, |
8c47c732 LP |
1662 | * but wait for the bus name to appear on the |
1663 | * bus. Notify services are similar. */ | |
05e343b7 | 1664 | |
5925dd3c | 1665 | service_set_main_pid(s, pid); |
80876c20 | 1666 | service_set_state(s, SERVICE_START); |
034c6ed7 LP |
1667 | } else |
1668 | assert_not_reached("Unknown service type"); | |
1669 | ||
1670 | return; | |
1671 | ||
1672 | fail: | |
f2341e0a | 1673 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start' task: %m"); |
f42806df | 1674 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1675 | } |
1676 | ||
1677 | static void service_enter_start_pre(Service *s) { | |
1678 | int r; | |
1679 | ||
1680 | assert(s); | |
1681 | ||
5e94833f LP |
1682 | service_unwatch_control_pid(s); |
1683 | ||
117dcc57 ZJS |
1684 | s->control_command = s->exec_command[SERVICE_EXEC_START_PRE]; |
1685 | if (s->control_command) { | |
8f53a7b8 LP |
1686 | /* Before we start anything, let's clear up what might |
1687 | * be left from previous runs. */ | |
4ad49000 | 1688 | service_kill_control_processes(s); |
8f53a7b8 | 1689 | |
867b3b7d LP |
1690 | s->control_command_id = SERVICE_EXEC_START_PRE; |
1691 | ||
ecedd90f LP |
1692 | r = service_spawn(s, |
1693 | s->control_command, | |
21b2ce39 | 1694 | s->timeout_start_usec, |
ecedd90f LP |
1695 | false, |
1696 | !s->permissions_start_only, | |
1697 | !s->root_directory_start_only, | |
1698 | true, | |
ecedd90f LP |
1699 | true, |
1700 | &s->control_pid); | |
1701 | if (r < 0) | |
034c6ed7 LP |
1702 | goto fail; |
1703 | ||
80876c20 LP |
1704 | service_set_state(s, SERVICE_START_PRE); |
1705 | } else | |
034c6ed7 LP |
1706 | service_enter_start(s); |
1707 | ||
1708 | return; | |
1709 | ||
1710 | fail: | |
f2341e0a | 1711 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-pre' task: %m"); |
f42806df | 1712 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
034c6ed7 LP |
1713 | } |
1714 | ||
1715 | static void service_enter_restart(Service *s) { | |
718db961 | 1716 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
034c6ed7 | 1717 | int r; |
398ef8ba | 1718 | |
034c6ed7 LP |
1719 | assert(s); |
1720 | ||
a8bb2e65 LP |
1721 | if (UNIT(s)->job && UNIT(s)->job->type == JOB_STOP) { |
1722 | /* Don't restart things if we are going down anyway */ | |
f2341e0a | 1723 | log_unit_info(UNIT(s), "Stop job pending for unit, delaying automatic restart."); |
2edfa366 | 1724 | |
718db961 | 1725 | r = service_arm_timer(s, s->restart_usec); |
a8bb2e65 | 1726 | if (r < 0) |
2edfa366 | 1727 | goto fail; |
feae8adb DW |
1728 | |
1729 | return; | |
2edfa366 LP |
1730 | } |
1731 | ||
48bb5876 DW |
1732 | /* Any units that are bound to this service must also be |
1733 | * restarted. We use JOB_RESTART (instead of the more obvious | |
1734 | * JOB_START) here so that those dependency jobs will be added | |
1735 | * as well. */ | |
1736 | r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_FAIL, false, &error, NULL); | |
1737 | if (r < 0) | |
034c6ed7 LP |
1738 | goto fail; |
1739 | ||
a8bb2e65 LP |
1740 | /* Note that we stay in the SERVICE_AUTO_RESTART state here, |
1741 | * it will be canceled as part of the service_stop() call that | |
1742 | * is executed as part of JOB_RESTART. */ | |
1743 | ||
f2341e0a | 1744 | log_unit_debug(UNIT(s), "Scheduled restart job."); |
034c6ed7 LP |
1745 | return; |
1746 | ||
1747 | fail: | |
f2341e0a | 1748 | log_unit_warning(UNIT(s), "Failed to schedule restart job: %s", bus_error_message(&error, -r)); |
f42806df | 1749 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); |
034c6ed7 LP |
1750 | } |
1751 | ||
308d72dc LP |
1752 | static void service_enter_reload_by_notify(Service *s) { |
1753 | assert(s); | |
1754 | ||
1755 | if (s->timeout_start_usec > 0) | |
1756 | service_arm_timer(s, s->timeout_start_usec); | |
1757 | ||
1758 | service_set_state(s, SERVICE_RELOAD); | |
1759 | } | |
1760 | ||
034c6ed7 LP |
1761 | static void service_enter_reload(Service *s) { |
1762 | int r; | |
1763 | ||
1764 | assert(s); | |
1765 | ||
5e94833f LP |
1766 | service_unwatch_control_pid(s); |
1767 | ||
117dcc57 ZJS |
1768 | s->control_command = s->exec_command[SERVICE_EXEC_RELOAD]; |
1769 | if (s->control_command) { | |
867b3b7d LP |
1770 | s->control_command_id = SERVICE_EXEC_RELOAD; |
1771 | ||
ecedd90f LP |
1772 | r = service_spawn(s, |
1773 | s->control_command, | |
21b2ce39 | 1774 | s->timeout_start_usec, |
ecedd90f LP |
1775 | false, |
1776 | !s->permissions_start_only, | |
1777 | !s->root_directory_start_only, | |
1778 | false, | |
ecedd90f LP |
1779 | true, |
1780 | &s->control_pid); | |
1781 | if (r < 0) | |
034c6ed7 LP |
1782 | goto fail; |
1783 | ||
80876c20 LP |
1784 | service_set_state(s, SERVICE_RELOAD); |
1785 | } else | |
f42806df | 1786 | service_enter_running(s, SERVICE_SUCCESS); |
034c6ed7 LP |
1787 | |
1788 | return; | |
1789 | ||
1790 | fail: | |
f2341e0a | 1791 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'reload' task: %m"); |
f42806df LP |
1792 | s->reload_result = SERVICE_FAILURE_RESOURCES; |
1793 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
1794 | } |
1795 | ||
f42806df | 1796 | static void service_run_next_control(Service *s) { |
034c6ed7 LP |
1797 | int r; |
1798 | ||
1799 | assert(s); | |
1800 | assert(s->control_command); | |
1801 | assert(s->control_command->command_next); | |
1802 | ||
34e9ba66 | 1803 | assert(s->control_command_id != SERVICE_EXEC_START); |
034c6ed7 | 1804 | |
34e9ba66 | 1805 | s->control_command = s->control_command->command_next; |
5e94833f LP |
1806 | service_unwatch_control_pid(s); |
1807 | ||
ecedd90f LP |
1808 | r = service_spawn(s, |
1809 | s->control_command, | |
21b2ce39 | 1810 | IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD) ? s->timeout_start_usec : s->timeout_stop_usec, |
ecedd90f LP |
1811 | false, |
1812 | !s->permissions_start_only, | |
1813 | !s->root_directory_start_only, | |
1814 | s->control_command_id == SERVICE_EXEC_START_PRE || | |
1815 | s->control_command_id == SERVICE_EXEC_STOP_POST, | |
ecedd90f LP |
1816 | true, |
1817 | &s->control_pid); | |
1818 | if (r < 0) | |
034c6ed7 LP |
1819 | goto fail; |
1820 | ||
1821 | return; | |
1822 | ||
1823 | fail: | |
f2341e0a | 1824 | log_unit_warning_errno(UNIT(s), r, "Failed to run next control task: %m"); |
034c6ed7 | 1825 | |
80876c20 | 1826 | if (s->state == SERVICE_START_PRE) |
f42806df | 1827 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); |
80876c20 | 1828 | else if (s->state == SERVICE_STOP) |
f42806df | 1829 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 | 1830 | else if (s->state == SERVICE_STOP_POST) |
f42806df | 1831 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
e2f3b44c | 1832 | else if (s->state == SERVICE_RELOAD) { |
f42806df LP |
1833 | s->reload_result = SERVICE_FAILURE_RESOURCES; |
1834 | service_enter_running(s, SERVICE_SUCCESS); | |
e2f3b44c | 1835 | } else |
f42806df | 1836 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
5cb5a6ff LP |
1837 | } |
1838 | ||
f42806df | 1839 | static void service_run_next_main(Service *s) { |
34e9ba66 LP |
1840 | pid_t pid; |
1841 | int r; | |
1842 | ||
1843 | assert(s); | |
867b3b7d LP |
1844 | assert(s->main_command); |
1845 | assert(s->main_command->command_next); | |
1846 | assert(s->type == SERVICE_ONESHOT); | |
34e9ba66 | 1847 | |
867b3b7d | 1848 | s->main_command = s->main_command->command_next; |
34e9ba66 LP |
1849 | service_unwatch_main_pid(s); |
1850 | ||
ecedd90f LP |
1851 | r = service_spawn(s, |
1852 | s->main_command, | |
21b2ce39 | 1853 | s->timeout_start_usec, |
ecedd90f LP |
1854 | true, |
1855 | true, | |
1856 | true, | |
1857 | true, | |
ecedd90f LP |
1858 | false, |
1859 | &pid); | |
1860 | if (r < 0) | |
34e9ba66 LP |
1861 | goto fail; |
1862 | ||
1863 | service_set_main_pid(s, pid); | |
1864 | ||
1865 | return; | |
1866 | ||
1867 | fail: | |
f2341e0a | 1868 | log_unit_warning_errno(UNIT(s), r, "Failed to run next main task: %m"); |
f42806df | 1869 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
34e9ba66 LP |
1870 | } |
1871 | ||
93ae25e6 MO |
1872 | static int service_start_limit_test(Service *s) { |
1873 | assert(s); | |
1874 | ||
1875 | if (ratelimit_test(&s->start_limit)) | |
1876 | return 0; | |
1877 | ||
f2341e0a | 1878 | log_unit_warning(UNIT(s), "Start request repeated too quickly."); |
2928b0a8 LP |
1879 | |
1880 | return failure_action(UNIT(s)->manager, s->start_limit_action, s->reboot_arg); | |
93ae25e6 MO |
1881 | } |
1882 | ||
87f0e418 LP |
1883 | static int service_start(Unit *u) { |
1884 | Service *s = SERVICE(u); | |
4b939747 | 1885 | int r; |
5cb5a6ff LP |
1886 | |
1887 | assert(s); | |
1888 | ||
034c6ed7 LP |
1889 | /* We cannot fulfill this request right now, try again later |
1890 | * please! */ | |
a00973af LP |
1891 | if (IN_SET(s->state, |
1892 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, | |
1893 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) | |
5cb5a6ff LP |
1894 | return -EAGAIN; |
1895 | ||
034c6ed7 | 1896 | /* Already on it! */ |
a00973af | 1897 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST)) |
034c6ed7 LP |
1898 | return 0; |
1899 | ||
2e9d6c12 | 1900 | /* A service that will be restarted must be stopped first to |
7f2cddae | 1901 | * trigger BindsTo and/or OnFailure dependencies. If a user |
2e9d6c12 | 1902 | * does not want to wait for the holdoff time to elapse, the |
d4943dc7 LP |
1903 | * service should be manually restarted, not started. We |
1904 | * simply return EAGAIN here, so that any start jobs stay | |
1905 | * queued, and assume that the auto restart timer will | |
1906 | * eventually trigger the restart. */ | |
1907 | if (s->state == SERVICE_AUTO_RESTART) | |
a8bb2e65 | 1908 | return -EAGAIN; |
2e9d6c12 | 1909 | |
a00973af | 1910 | assert(IN_SET(s->state, SERVICE_DEAD, SERVICE_FAILED)); |
5cb5a6ff | 1911 | |
1e2e8133 | 1912 | /* Make sure we don't enter a busy loop of some kind. */ |
4b939747 | 1913 | r = service_start_limit_test(s); |
c2f34808 | 1914 | if (r < 0) { |
8d1b002a | 1915 | service_enter_dead(s, SERVICE_FAILURE_START_LIMIT, false); |
4b939747 | 1916 | return r; |
c2f34808 | 1917 | } |
1e2e8133 | 1918 | |
f42806df LP |
1919 | s->result = SERVICE_SUCCESS; |
1920 | s->reload_result = SERVICE_SUCCESS; | |
034c6ed7 | 1921 | s->main_pid_known = false; |
6dfa5494 | 1922 | s->main_pid_alien = false; |
47342320 | 1923 | s->forbid_restart = false; |
5ad096b3 | 1924 | s->reset_cpu_usage = true; |
034c6ed7 | 1925 | |
8cfdb077 LP |
1926 | free(s->status_text); |
1927 | s->status_text = NULL; | |
1928 | s->status_errno = 0; | |
1929 | ||
308d72dc LP |
1930 | s->notify_state = NOTIFY_UNKNOWN; |
1931 | ||
034c6ed7 | 1932 | service_enter_start_pre(s); |
82a2b6bb | 1933 | return 1; |
5cb5a6ff LP |
1934 | } |
1935 | ||
87f0e418 LP |
1936 | static int service_stop(Unit *u) { |
1937 | Service *s = SERVICE(u); | |
5cb5a6ff LP |
1938 | |
1939 | assert(s); | |
1940 | ||
a509f0e6 | 1941 | /* Don't create restart jobs from manual stops. */ |
47342320 | 1942 | s->forbid_restart = true; |
034c6ed7 | 1943 | |
e537352b | 1944 | /* Already on it */ |
a00973af LP |
1945 | if (IN_SET(s->state, |
1946 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, | |
1947 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) | |
e537352b LP |
1948 | return 0; |
1949 | ||
f0c7b229 | 1950 | /* A restart will be scheduled or is in progress. */ |
034c6ed7 | 1951 | if (s->state == SERVICE_AUTO_RESTART) { |
0c7f15b3 | 1952 | service_set_state(s, SERVICE_DEAD); |
034c6ed7 LP |
1953 | return 0; |
1954 | } | |
1955 | ||
3f6c78dc LP |
1956 | /* If there's already something running we go directly into |
1957 | * kill mode. */ | |
a00973af | 1958 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RELOAD)) { |
f42806df | 1959 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
3f6c78dc LP |
1960 | return 0; |
1961 | } | |
5cb5a6ff | 1962 | |
a00973af | 1963 | assert(IN_SET(s->state, SERVICE_RUNNING, SERVICE_EXITED)); |
3a762661 | 1964 | |
f42806df | 1965 | service_enter_stop(s, SERVICE_SUCCESS); |
82a2b6bb | 1966 | return 1; |
5cb5a6ff LP |
1967 | } |
1968 | ||
87f0e418 LP |
1969 | static int service_reload(Unit *u) { |
1970 | Service *s = SERVICE(u); | |
034c6ed7 LP |
1971 | |
1972 | assert(s); | |
1973 | ||
80876c20 | 1974 | assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED); |
034c6ed7 LP |
1975 | |
1976 | service_enter_reload(s); | |
5cb5a6ff LP |
1977 | return 0; |
1978 | } | |
1979 | ||
44a6b1b6 | 1980 | _pure_ static bool service_can_reload(Unit *u) { |
87f0e418 | 1981 | Service *s = SERVICE(u); |
034c6ed7 LP |
1982 | |
1983 | assert(s); | |
1984 | ||
1985 | return !!s->exec_command[SERVICE_EXEC_RELOAD]; | |
1986 | } | |
1987 | ||
a16e1123 LP |
1988 | static int service_serialize(Unit *u, FILE *f, FDSet *fds) { |
1989 | Service *s = SERVICE(u); | |
2339fc93 | 1990 | ServiceFDStore *fs; |
a16e1123 LP |
1991 | |
1992 | assert(u); | |
1993 | assert(f); | |
1994 | assert(fds); | |
1995 | ||
1996 | unit_serialize_item(u, f, "state", service_state_to_string(s->state)); | |
f42806df LP |
1997 | unit_serialize_item(u, f, "result", service_result_to_string(s->result)); |
1998 | unit_serialize_item(u, f, "reload-result", service_result_to_string(s->reload_result)); | |
a16e1123 LP |
1999 | |
2000 | if (s->control_pid > 0) | |
f06db334 | 2001 | unit_serialize_item_format(u, f, "control-pid", PID_FMT, s->control_pid); |
a16e1123 | 2002 | |
5925dd3c | 2003 | if (s->main_pid_known && s->main_pid > 0) |
ccd06097 | 2004 | unit_serialize_item_format(u, f, "main-pid", PID_FMT, s->main_pid); |
a16e1123 LP |
2005 | |
2006 | unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known)); | |
de1d4f9b | 2007 | unit_serialize_item(u, f, "bus-name-good", yes_no(s->bus_name_good)); |
a16e1123 | 2008 | |
f2341e0a LP |
2009 | if (s->status_text) { |
2010 | _cleanup_free_ char *c = NULL; | |
2011 | ||
2012 | c = cescape(s->status_text); | |
2013 | unit_serialize_item(u, f, "status-text", strempty(c)); | |
2014 | } | |
3a2776bc | 2015 | |
cfc4eb4c LP |
2016 | /* FIXME: There's a minor uncleanliness here: if there are |
2017 | * multiple commands attached here, we will start from the | |
2018 | * first one again */ | |
a16e1123 | 2019 | if (s->control_command_id >= 0) |
f06db334 | 2020 | unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id)); |
a16e1123 LP |
2021 | |
2022 | if (s->socket_fd >= 0) { | |
2023 | int copy; | |
2024 | ||
2339fc93 LP |
2025 | copy = fdset_put_dup(fds, s->socket_fd); |
2026 | if (copy < 0) | |
a16e1123 LP |
2027 | return copy; |
2028 | ||
2029 | unit_serialize_item_format(u, f, "socket-fd", "%i", copy); | |
2030 | } | |
2031 | ||
e44da745 DM |
2032 | if (s->bus_endpoint_fd >= 0) { |
2033 | int copy; | |
2034 | ||
2339fc93 LP |
2035 | copy = fdset_put_dup(fds, s->bus_endpoint_fd); |
2036 | if (copy < 0) | |
e44da745 DM |
2037 | return copy; |
2038 | ||
2039 | unit_serialize_item_format(u, f, "endpoint-fd", "%i", copy); | |
2040 | } | |
2041 | ||
2339fc93 LP |
2042 | LIST_FOREACH(fd_store, fs, s->fd_store) { |
2043 | int copy; | |
2044 | ||
2045 | copy = fdset_put_dup(fds, fs->fd); | |
2046 | if (copy < 0) | |
2047 | return copy; | |
2048 | ||
2049 | unit_serialize_item_format(u, f, "fd-store-fd", "%i", copy); | |
2050 | } | |
2051 | ||
ecdbca40 | 2052 | if (s->main_exec_status.pid > 0) { |
f06db334 LP |
2053 | unit_serialize_item_format(u, f, "main-exec-status-pid", PID_FMT, s->main_exec_status.pid); |
2054 | dual_timestamp_serialize(f, "main-exec-status-start", &s->main_exec_status.start_timestamp); | |
2055 | dual_timestamp_serialize(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp); | |
ecdbca40 | 2056 | |
799fd0fd | 2057 | if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) { |
f06db334 LP |
2058 | unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code); |
2059 | unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status); | |
ecdbca40 LP |
2060 | } |
2061 | } | |
f06db334 | 2062 | |
a6927d7f | 2063 | if (dual_timestamp_is_set(&s->watchdog_timestamp)) |
842129f5 | 2064 | dual_timestamp_serialize(f, "watchdog-timestamp", &s->watchdog_timestamp); |
ecdbca40 | 2065 | |
6aca9a58 | 2066 | if (s->forbid_restart) |
8d1a2802 | 2067 | unit_serialize_item(u, f, "forbid-restart", yes_no(s->forbid_restart)); |
6aca9a58 | 2068 | |
a16e1123 LP |
2069 | return 0; |
2070 | } | |
2071 | ||
2072 | static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
2073 | Service *s = SERVICE(u); | |
2339fc93 | 2074 | int r; |
a16e1123 LP |
2075 | |
2076 | assert(u); | |
2077 | assert(key); | |
2078 | assert(value); | |
2079 | assert(fds); | |
2080 | ||
2081 | if (streq(key, "state")) { | |
2082 | ServiceState state; | |
2083 | ||
117dcc57 ZJS |
2084 | state = service_state_from_string(value); |
2085 | if (state < 0) | |
f2341e0a | 2086 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
2087 | else |
2088 | s->deserialized_state = state; | |
f42806df LP |
2089 | } else if (streq(key, "result")) { |
2090 | ServiceResult f; | |
2091 | ||
2092 | f = service_result_from_string(value); | |
2093 | if (f < 0) | |
f2341e0a | 2094 | log_unit_debug(u, "Failed to parse result value: %s", value); |
f42806df LP |
2095 | else if (f != SERVICE_SUCCESS) |
2096 | s->result = f; | |
2097 | ||
2098 | } else if (streq(key, "reload-result")) { | |
2099 | ServiceResult f; | |
2100 | ||
2101 | f = service_result_from_string(value); | |
2102 | if (f < 0) | |
f2341e0a | 2103 | log_unit_debug(u, "Failed to parse reload result value: %s", value); |
f42806df LP |
2104 | else if (f != SERVICE_SUCCESS) |
2105 | s->reload_result = f; | |
a16e1123 | 2106 | |
a16e1123 | 2107 | } else if (streq(key, "control-pid")) { |
5925dd3c | 2108 | pid_t pid; |
a16e1123 | 2109 | |
e364ad06 | 2110 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2111 | log_unit_debug(u, "Failed to parse control-pid value: %s", value); |
a16e1123 | 2112 | else |
e55224ca | 2113 | s->control_pid = pid; |
a16e1123 | 2114 | } else if (streq(key, "main-pid")) { |
5925dd3c | 2115 | pid_t pid; |
a16e1123 | 2116 | |
e364ad06 | 2117 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2118 | log_unit_debug(u, "Failed to parse main-pid value: %s", value); |
7400b9d2 LP |
2119 | else { |
2120 | service_set_main_pid(s, pid); | |
2121 | unit_watch_pid(UNIT(s), pid); | |
2122 | } | |
a16e1123 LP |
2123 | } else if (streq(key, "main-pid-known")) { |
2124 | int b; | |
2125 | ||
117dcc57 ZJS |
2126 | b = parse_boolean(value); |
2127 | if (b < 0) | |
f2341e0a | 2128 | log_unit_debug(u, "Failed to parse main-pid-known value: %s", value); |
a16e1123 LP |
2129 | else |
2130 | s->main_pid_known = b; | |
de1d4f9b WF |
2131 | } else if (streq(key, "bus-name-good")) { |
2132 | int b; | |
2133 | ||
2134 | b = parse_boolean(value); | |
2135 | if (b < 0) | |
2136 | log_unit_debug(u, "Failed to parse bus-name-good value: %s", value); | |
2137 | else | |
2138 | s->bus_name_good = b; | |
3a2776bc LP |
2139 | } else if (streq(key, "status-text")) { |
2140 | char *t; | |
2141 | ||
f2341e0a LP |
2142 | r = cunescape(value, 0, &t); |
2143 | if (r < 0) | |
2144 | log_unit_debug_errno(u, r, "Failed to unescape status text: %s", value); | |
117dcc57 | 2145 | else { |
3a2776bc LP |
2146 | free(s->status_text); |
2147 | s->status_text = t; | |
2148 | } | |
2149 | ||
a16e1123 LP |
2150 | } else if (streq(key, "control-command")) { |
2151 | ServiceExecCommand id; | |
2152 | ||
117dcc57 ZJS |
2153 | id = service_exec_command_from_string(value); |
2154 | if (id < 0) | |
f2341e0a | 2155 | log_unit_debug(u, "Failed to parse exec-command value: %s", value); |
a16e1123 LP |
2156 | else { |
2157 | s->control_command_id = id; | |
2158 | s->control_command = s->exec_command[id]; | |
2159 | } | |
2160 | } else if (streq(key, "socket-fd")) { | |
2161 | int fd; | |
2162 | ||
2163 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 2164 | log_unit_debug(u, "Failed to parse socket-fd value: %s", value); |
a16e1123 | 2165 | else { |
574634bc | 2166 | asynchronous_close(s->socket_fd); |
a16e1123 LP |
2167 | s->socket_fd = fdset_remove(fds, fd); |
2168 | } | |
e44da745 DM |
2169 | } else if (streq(key, "endpoint-fd")) { |
2170 | int fd; | |
2171 | ||
2172 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 2173 | log_unit_debug(u, "Failed to parse endpoint-fd value: %s", value); |
e44da745 DM |
2174 | else { |
2175 | safe_close(s->bus_endpoint_fd); | |
2176 | s->bus_endpoint_fd = fdset_remove(fds, fd); | |
2177 | } | |
2339fc93 LP |
2178 | } else if (streq(key, "fd-store-fd")) { |
2179 | int fd; | |
2180 | ||
2181 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 2182 | log_unit_debug(u, "Failed to parse fd-store-fd value: %s", value); |
2339fc93 LP |
2183 | else { |
2184 | r = service_add_fd_store(s, fd); | |
2185 | if (r < 0) | |
f2341e0a | 2186 | log_unit_error_errno(u, r, "Failed to add fd to store: %m"); |
2339fc93 LP |
2187 | else if (r > 0) |
2188 | fdset_remove(fds, fd); | |
2189 | } | |
2190 | ||
ecdbca40 LP |
2191 | } else if (streq(key, "main-exec-status-pid")) { |
2192 | pid_t pid; | |
2193 | ||
e364ad06 | 2194 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2195 | log_unit_debug(u, "Failed to parse main-exec-status-pid value: %s", value); |
ecdbca40 LP |
2196 | else |
2197 | s->main_exec_status.pid = pid; | |
2198 | } else if (streq(key, "main-exec-status-code")) { | |
2199 | int i; | |
2200 | ||
e364ad06 | 2201 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 2202 | log_unit_debug(u, "Failed to parse main-exec-status-code value: %s", value); |
ecdbca40 LP |
2203 | else |
2204 | s->main_exec_status.code = i; | |
2205 | } else if (streq(key, "main-exec-status-status")) { | |
2206 | int i; | |
2207 | ||
e364ad06 | 2208 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 2209 | log_unit_debug(u, "Failed to parse main-exec-status-status value: %s", value); |
ecdbca40 LP |
2210 | else |
2211 | s->main_exec_status.status = i; | |
799fd0fd LP |
2212 | } else if (streq(key, "main-exec-status-start")) |
2213 | dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp); | |
2214 | else if (streq(key, "main-exec-status-exit")) | |
2215 | dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp); | |
a6927d7f MO |
2216 | else if (streq(key, "watchdog-timestamp")) |
2217 | dual_timestamp_deserialize(value, &s->watchdog_timestamp); | |
613b411c | 2218 | else if (streq(key, "forbid-restart")) { |
6aca9a58 SE |
2219 | int b; |
2220 | ||
2221 | b = parse_boolean(value); | |
2222 | if (b < 0) | |
f2341e0a | 2223 | log_unit_debug(u, "Failed to parse forbid-restart value: %s", value); |
6aca9a58 SE |
2224 | else |
2225 | s->forbid_restart = b; | |
c17ec25e | 2226 | } else |
f2341e0a | 2227 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
2228 | |
2229 | return 0; | |
2230 | } | |
2231 | ||
44a6b1b6 | 2232 | _pure_ static UnitActiveState service_active_state(Unit *u) { |
e056b01d LP |
2233 | const UnitActiveState *table; |
2234 | ||
87f0e418 | 2235 | assert(u); |
5cb5a6ff | 2236 | |
e056b01d LP |
2237 | table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
2238 | ||
2239 | return table[SERVICE(u)->state]; | |
034c6ed7 LP |
2240 | } |
2241 | ||
10a94420 LP |
2242 | static const char *service_sub_state_to_string(Unit *u) { |
2243 | assert(u); | |
2244 | ||
2245 | return service_state_to_string(SERVICE(u)->state); | |
2246 | } | |
2247 | ||
701cc384 LP |
2248 | static bool service_check_gc(Unit *u) { |
2249 | Service *s = SERVICE(u); | |
2250 | ||
2251 | assert(s); | |
2252 | ||
6d55002a LP |
2253 | /* Never clean up services that still have a process around, |
2254 | * even if the service is formally dead. */ | |
2255 | if (cgroup_good(s) > 0 || | |
2256 | main_pid_good(s) > 0 || | |
2257 | control_pid_good(s) > 0) | |
2258 | return true; | |
2259 | ||
6d55002a LP |
2260 | return false; |
2261 | } | |
2262 | ||
44a6b1b6 | 2263 | _pure_ static bool service_check_snapshot(Unit *u) { |
701cc384 LP |
2264 | Service *s = SERVICE(u); |
2265 | ||
2266 | assert(s); | |
2267 | ||
8bb2d17d | 2268 | return s->socket_fd < 0; |
701cc384 LP |
2269 | } |
2270 | ||
3a111838 MS |
2271 | static int service_retry_pid_file(Service *s) { |
2272 | int r; | |
2273 | ||
2274 | assert(s->pid_file); | |
2275 | assert(s->state == SERVICE_START || s->state == SERVICE_START_POST); | |
2276 | ||
2277 | r = service_load_pid_file(s, false); | |
2278 | if (r < 0) | |
2279 | return r; | |
2280 | ||
2281 | service_unwatch_pid_file(s); | |
2282 | ||
f42806df | 2283 | service_enter_running(s, SERVICE_SUCCESS); |
3a111838 MS |
2284 | return 0; |
2285 | } | |
2286 | ||
2287 | static int service_watch_pid_file(Service *s) { | |
2288 | int r; | |
2289 | ||
f2341e0a | 2290 | log_unit_debug(UNIT(s), "Setting watch for PID file %s", s->pid_file_pathspec->path); |
8bb2d17d | 2291 | |
718db961 | 2292 | r = path_spec_watch(s->pid_file_pathspec, service_dispatch_io); |
3a111838 MS |
2293 | if (r < 0) |
2294 | goto fail; | |
2295 | ||
2296 | /* the pidfile might have appeared just before we set the watch */ | |
f2341e0a | 2297 | log_unit_debug(UNIT(s), "Trying to read PID file %s in case it changed", s->pid_file_pathspec->path); |
3a111838 MS |
2298 | service_retry_pid_file(s); |
2299 | ||
2300 | return 0; | |
2301 | fail: | |
f2341e0a | 2302 | log_unit_error_errno(UNIT(s), r, "Failed to set a watch for PID file %s: %m", s->pid_file_pathspec->path); |
3a111838 MS |
2303 | service_unwatch_pid_file(s); |
2304 | return r; | |
2305 | } | |
2306 | ||
2307 | static int service_demand_pid_file(Service *s) { | |
2308 | PathSpec *ps; | |
2309 | ||
2310 | assert(s->pid_file); | |
2311 | assert(!s->pid_file_pathspec); | |
2312 | ||
2313 | ps = new0(PathSpec, 1); | |
2314 | if (!ps) | |
2315 | return -ENOMEM; | |
2316 | ||
718db961 | 2317 | ps->unit = UNIT(s); |
3a111838 MS |
2318 | ps->path = strdup(s->pid_file); |
2319 | if (!ps->path) { | |
2320 | free(ps); | |
2321 | return -ENOMEM; | |
2322 | } | |
2323 | ||
2324 | path_kill_slashes(ps->path); | |
2325 | ||
2326 | /* PATH_CHANGED would not be enough. There are daemons (sendmail) that | |
2327 | * keep their PID file open all the time. */ | |
2328 | ps->type = PATH_MODIFIED; | |
2329 | ps->inotify_fd = -1; | |
2330 | ||
2331 | s->pid_file_pathspec = ps; | |
2332 | ||
2333 | return service_watch_pid_file(s); | |
2334 | } | |
2335 | ||
718db961 | 2336 | static int service_dispatch_io(sd_event_source *source, int fd, uint32_t events, void *userdata) { |
e14c2802 LP |
2337 | PathSpec *p = userdata; |
2338 | Service *s; | |
2339 | ||
2340 | assert(p); | |
2341 | ||
2342 | s = SERVICE(p->unit); | |
3a111838 MS |
2343 | |
2344 | assert(s); | |
2345 | assert(fd >= 0); | |
2346 | assert(s->state == SERVICE_START || s->state == SERVICE_START_POST); | |
2347 | assert(s->pid_file_pathspec); | |
57020a3a | 2348 | assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd)); |
3a111838 | 2349 | |
f2341e0a | 2350 | log_unit_debug(UNIT(s), "inotify event"); |
3a111838 | 2351 | |
e14c2802 | 2352 | if (path_spec_fd_event(p, events) < 0) |
3a111838 MS |
2353 | goto fail; |
2354 | ||
2355 | if (service_retry_pid_file(s) == 0) | |
718db961 | 2356 | return 0; |
3a111838 MS |
2357 | |
2358 | if (service_watch_pid_file(s) < 0) | |
2359 | goto fail; | |
2360 | ||
718db961 LP |
2361 | return 0; |
2362 | ||
3a111838 MS |
2363 | fail: |
2364 | service_unwatch_pid_file(s); | |
f42806df | 2365 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
718db961 | 2366 | return 0; |
3a111838 MS |
2367 | } |
2368 | ||
a911bb9a LP |
2369 | static void service_notify_cgroup_empty_event(Unit *u) { |
2370 | Service *s = SERVICE(u); | |
2371 | ||
2372 | assert(u); | |
2373 | ||
f2341e0a | 2374 | log_unit_debug(u, "cgroup is empty"); |
a911bb9a LP |
2375 | |
2376 | switch (s->state) { | |
2377 | ||
2378 | /* Waiting for SIGCHLD is usually more interesting, | |
2379 | * because it includes return codes/signals. Which is | |
2380 | * why we ignore the cgroup events for most cases, | |
2381 | * except when we don't know pid which to expect the | |
2382 | * SIGCHLD for. */ | |
2383 | ||
2384 | case SERVICE_START: | |
2385 | case SERVICE_START_POST: | |
2386 | /* If we were hoping for the daemon to write its PID file, | |
2387 | * we can give up now. */ | |
2388 | if (s->pid_file_pathspec) { | |
f2341e0a | 2389 | log_unit_warning(u, "Daemon never wrote its PID file. Failing."); |
8bb2d17d | 2390 | |
a911bb9a LP |
2391 | service_unwatch_pid_file(s); |
2392 | if (s->state == SERVICE_START) | |
2393 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); | |
2394 | else | |
2395 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); | |
2396 | } | |
2397 | break; | |
2398 | ||
2399 | case SERVICE_RUNNING: | |
2400 | /* service_enter_running() will figure out what to do */ | |
2401 | service_enter_running(s, SERVICE_SUCCESS); | |
2402 | break; | |
2403 | ||
db2cb23b | 2404 | case SERVICE_STOP_SIGABRT: |
a911bb9a LP |
2405 | case SERVICE_STOP_SIGTERM: |
2406 | case SERVICE_STOP_SIGKILL: | |
2407 | ||
2408 | if (main_pid_good(s) <= 0 && !control_pid_good(s)) | |
2409 | service_enter_stop_post(s, SERVICE_SUCCESS); | |
2410 | ||
2411 | break; | |
2412 | ||
2413 | case SERVICE_STOP_POST: | |
2414 | case SERVICE_FINAL_SIGTERM: | |
2415 | case SERVICE_FINAL_SIGKILL: | |
2416 | if (main_pid_good(s) <= 0 && !control_pid_good(s)) | |
2417 | service_enter_dead(s, SERVICE_SUCCESS, true); | |
2418 | ||
2419 | break; | |
2420 | ||
2421 | default: | |
2422 | ; | |
2423 | } | |
2424 | } | |
2425 | ||
87f0e418 LP |
2426 | static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
2427 | Service *s = SERVICE(u); | |
f42806df | 2428 | ServiceResult f; |
5cb5a6ff LP |
2429 | |
2430 | assert(s); | |
034c6ed7 LP |
2431 | assert(pid >= 0); |
2432 | ||
96342de6 LN |
2433 | if (UNIT(s)->fragment_path ? is_clean_exit(code, status, &s->success_status) : |
2434 | is_clean_exit_lsb(code, status, &s->success_status)) | |
f42806df LP |
2435 | f = SERVICE_SUCCESS; |
2436 | else if (code == CLD_EXITED) | |
2437 | f = SERVICE_FAILURE_EXIT_CODE; | |
2438 | else if (code == CLD_KILLED) | |
2439 | f = SERVICE_FAILURE_SIGNAL; | |
2440 | else if (code == CLD_DUMPED) | |
2441 | f = SERVICE_FAILURE_CORE_DUMP; | |
d06dacd0 | 2442 | else |
cfc4eb4c | 2443 | assert_not_reached("Unknown code"); |
034c6ed7 LP |
2444 | |
2445 | if (s->main_pid == pid) { | |
db01f8b3 MS |
2446 | /* Forking services may occasionally move to a new PID. |
2447 | * As long as they update the PID file before exiting the old | |
2448 | * PID, they're fine. */ | |
5375410b | 2449 | if (service_load_pid_file(s, false) == 0) |
db01f8b3 | 2450 | return; |
034c6ed7 | 2451 | |
034c6ed7 | 2452 | s->main_pid = 0; |
6ea832a2 | 2453 | exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status); |
034c6ed7 | 2454 | |
867b3b7d | 2455 | if (s->main_command) { |
fbeefb45 LP |
2456 | /* If this is not a forking service than the |
2457 | * main process got started and hence we copy | |
2458 | * the exit status so that it is recorded both | |
2459 | * as main and as control process exit | |
2460 | * status */ | |
2461 | ||
867b3b7d | 2462 | s->main_command->exec_status = s->main_exec_status; |
b708e7ce | 2463 | |
867b3b7d | 2464 | if (s->main_command->ignore) |
f42806df | 2465 | f = SERVICE_SUCCESS; |
fbeefb45 LP |
2466 | } else if (s->exec_command[SERVICE_EXEC_START]) { |
2467 | ||
2468 | /* If this is a forked process, then we should | |
2469 | * ignore the return value if this was | |
2470 | * configured for the starter process */ | |
2471 | ||
2472 | if (s->exec_command[SERVICE_EXEC_START]->ignore) | |
2473 | f = SERVICE_SUCCESS; | |
034c6ed7 LP |
2474 | } |
2475 | ||
f2341e0a LP |
2476 | log_struct(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, |
2477 | LOG_UNIT_ID(u), | |
2478 | LOG_UNIT_MESSAGE(u, "Main process exited, code=%s, status=%i/%s", | |
2479 | sigchld_code_to_string(code), status, | |
e2cc6eca LP |
2480 | strna(code == CLD_EXITED |
2481 | ? exit_status_to_string(status, EXIT_STATUS_FULL) | |
2482 | : signal_to_string(status))), | |
f2341e0a LP |
2483 | "EXIT_CODE=%s", sigchld_code_to_string(code), |
2484 | "EXIT_STATUS=%i", status, | |
2485 | NULL); | |
f42806df LP |
2486 | |
2487 | if (f != SERVICE_SUCCESS) | |
2488 | s->result = f; | |
034c6ed7 | 2489 | |
867b3b7d LP |
2490 | if (s->main_command && |
2491 | s->main_command->command_next && | |
f42806df | 2492 | f == SERVICE_SUCCESS) { |
034c6ed7 | 2493 | |
34e9ba66 LP |
2494 | /* There is another command to * |
2495 | * execute, so let's do that. */ | |
034c6ed7 | 2496 | |
f2341e0a | 2497 | log_unit_debug(u, "Running next main command for state %s.", service_state_to_string(s->state)); |
f42806df | 2498 | service_run_next_main(s); |
034c6ed7 | 2499 | |
34e9ba66 LP |
2500 | } else { |
2501 | ||
2502 | /* The service exited, so the service is officially | |
2503 | * gone. */ | |
867b3b7d | 2504 | s->main_command = NULL; |
34e9ba66 LP |
2505 | |
2506 | switch (s->state) { | |
2507 | ||
2508 | case SERVICE_START_POST: | |
2509 | case SERVICE_RELOAD: | |
2510 | case SERVICE_STOP: | |
2511 | /* Need to wait until the operation is | |
2512 | * done */ | |
c4653a4d | 2513 | break; |
7d55e835 | 2514 | |
34e9ba66 LP |
2515 | case SERVICE_START: |
2516 | if (s->type == SERVICE_ONESHOT) { | |
2517 | /* This was our main goal, so let's go on */ | |
f42806df | 2518 | if (f == SERVICE_SUCCESS) |
34e9ba66 LP |
2519 | service_enter_start_post(s); |
2520 | else | |
f42806df | 2521 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, f); |
34e9ba66 | 2522 | break; |
34e9ba66 | 2523 | } |
034c6ed7 | 2524 | |
bfba3256 LP |
2525 | /* Fall through */ |
2526 | ||
34e9ba66 | 2527 | case SERVICE_RUNNING: |
f42806df | 2528 | service_enter_running(s, f); |
34e9ba66 | 2529 | break; |
034c6ed7 | 2530 | |
db2cb23b | 2531 | case SERVICE_STOP_SIGABRT: |
34e9ba66 LP |
2532 | case SERVICE_STOP_SIGTERM: |
2533 | case SERVICE_STOP_SIGKILL: | |
5cb5a6ff | 2534 | |
34e9ba66 | 2535 | if (!control_pid_good(s)) |
f42806df | 2536 | service_enter_stop_post(s, f); |
5cb5a6ff | 2537 | |
34e9ba66 LP |
2538 | /* If there is still a control process, wait for that first */ |
2539 | break; | |
2540 | ||
bf108e55 LP |
2541 | case SERVICE_STOP_POST: |
2542 | case SERVICE_FINAL_SIGTERM: | |
2543 | case SERVICE_FINAL_SIGKILL: | |
2544 | ||
2545 | if (!control_pid_good(s)) | |
2546 | service_enter_dead(s, f, true); | |
2547 | break; | |
2548 | ||
34e9ba66 LP |
2549 | default: |
2550 | assert_not_reached("Uh, main process died at wrong time."); | |
2551 | } | |
034c6ed7 | 2552 | } |
5cb5a6ff | 2553 | |
034c6ed7 | 2554 | } else if (s->control_pid == pid) { |
34e9ba66 LP |
2555 | s->control_pid = 0; |
2556 | ||
b708e7ce | 2557 | if (s->control_command) { |
8bb2d17d | 2558 | exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status); |
a16e1123 | 2559 | |
b708e7ce | 2560 | if (s->control_command->ignore) |
f42806df | 2561 | f = SERVICE_SUCCESS; |
b708e7ce LP |
2562 | } |
2563 | ||
f2341e0a LP |
2564 | log_unit_full(u, f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, 0, |
2565 | "Control process exited, code=%s status=%i", | |
2566 | sigchld_code_to_string(code), status); | |
f42806df LP |
2567 | |
2568 | if (f != SERVICE_SUCCESS) | |
2569 | s->result = f; | |
034c6ed7 | 2570 | |
88f3e0c9 LP |
2571 | /* Immediately get rid of the cgroup, so that the |
2572 | * kernel doesn't delay the cgroup empty messages for | |
2573 | * the service cgroup any longer than necessary */ | |
4ad49000 | 2574 | service_kill_control_processes(s); |
88f3e0c9 | 2575 | |
34e9ba66 LP |
2576 | if (s->control_command && |
2577 | s->control_command->command_next && | |
f42806df | 2578 | f == SERVICE_SUCCESS) { |
034c6ed7 LP |
2579 | |
2580 | /* There is another command to * | |
2581 | * execute, so let's do that. */ | |
2582 | ||
f2341e0a | 2583 | log_unit_debug(u, "Running next control command for state %s.", service_state_to_string(s->state)); |
f42806df | 2584 | service_run_next_control(s); |
034c6ed7 | 2585 | |
80876c20 | 2586 | } else { |
034c6ed7 LP |
2587 | /* No further commands for this step, so let's |
2588 | * figure out what to do next */ | |
2589 | ||
a16e1123 LP |
2590 | s->control_command = NULL; |
2591 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
2592 | ||
f2341e0a | 2593 | log_unit_debug(u, "Got final SIGCHLD for state %s.", service_state_to_string(s->state)); |
bd982a8b | 2594 | |
034c6ed7 LP |
2595 | switch (s->state) { |
2596 | ||
2597 | case SERVICE_START_PRE: | |
f42806df | 2598 | if (f == SERVICE_SUCCESS) |
034c6ed7 LP |
2599 | service_enter_start(s); |
2600 | else | |
f42806df | 2601 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, f); |
034c6ed7 LP |
2602 | break; |
2603 | ||
2604 | case SERVICE_START: | |
bfba3256 LP |
2605 | if (s->type != SERVICE_FORKING) |
2606 | /* Maybe spurious event due to a reload that changed the type? */ | |
2607 | break; | |
034c6ed7 | 2608 | |
f42806df LP |
2609 | if (f != SERVICE_SUCCESS) { |
2610 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, f); | |
3a111838 MS |
2611 | break; |
2612 | } | |
034c6ed7 | 2613 | |
3a111838 | 2614 | if (s->pid_file) { |
f42806df LP |
2615 | bool has_start_post; |
2616 | int r; | |
2617 | ||
3a111838 MS |
2618 | /* Let's try to load the pid file here if we can. |
2619 | * The PID file might actually be created by a START_POST | |
2620 | * script. In that case don't worry if the loading fails. */ | |
f42806df LP |
2621 | |
2622 | has_start_post = !!s->exec_command[SERVICE_EXEC_START_POST]; | |
2623 | r = service_load_pid_file(s, !has_start_post); | |
3a111838 MS |
2624 | if (!has_start_post && r < 0) { |
2625 | r = service_demand_pid_file(s); | |
2626 | if (r < 0 || !cgroup_good(s)) | |
f42806df | 2627 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); |
3a111838 MS |
2628 | break; |
2629 | } | |
034c6ed7 | 2630 | } else |
3a111838 | 2631 | service_search_main_pid(s); |
034c6ed7 | 2632 | |
3a111838 | 2633 | service_enter_start_post(s); |
034c6ed7 LP |
2634 | break; |
2635 | ||
2636 | case SERVICE_START_POST: | |
f42806df LP |
2637 | if (f != SERVICE_SUCCESS) { |
2638 | service_enter_stop(s, f); | |
2096e009 | 2639 | break; |
034c6ed7 LP |
2640 | } |
2641 | ||
2096e009 | 2642 | if (s->pid_file) { |
f42806df LP |
2643 | int r; |
2644 | ||
2645 | r = service_load_pid_file(s, true); | |
2096e009 MS |
2646 | if (r < 0) { |
2647 | r = service_demand_pid_file(s); | |
2648 | if (r < 0 || !cgroup_good(s)) | |
f42806df | 2649 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
2096e009 MS |
2650 | break; |
2651 | } | |
2652 | } else | |
2653 | service_search_main_pid(s); | |
2654 | ||
f42806df | 2655 | service_enter_running(s, SERVICE_SUCCESS); |
3185a36b | 2656 | break; |
034c6ed7 LP |
2657 | |
2658 | case SERVICE_RELOAD: | |
f42806df | 2659 | if (f == SERVICE_SUCCESS) { |
5375410b | 2660 | service_load_pid_file(s, true); |
3185a36b LP |
2661 | service_search_main_pid(s); |
2662 | } | |
2663 | ||
f42806df LP |
2664 | s->reload_result = f; |
2665 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
2666 | break; |
2667 | ||
2668 | case SERVICE_STOP: | |
f42806df | 2669 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
034c6ed7 LP |
2670 | break; |
2671 | ||
db2cb23b | 2672 | case SERVICE_STOP_SIGABRT: |
034c6ed7 LP |
2673 | case SERVICE_STOP_SIGTERM: |
2674 | case SERVICE_STOP_SIGKILL: | |
2675 | if (main_pid_good(s) <= 0) | |
f42806df | 2676 | service_enter_stop_post(s, f); |
034c6ed7 LP |
2677 | |
2678 | /* If there is still a service | |
2679 | * process around, wait until | |
2680 | * that one quit, too */ | |
2681 | break; | |
2682 | ||
2683 | case SERVICE_STOP_POST: | |
2684 | case SERVICE_FINAL_SIGTERM: | |
2685 | case SERVICE_FINAL_SIGKILL: | |
bf108e55 LP |
2686 | if (main_pid_good(s) <= 0) |
2687 | service_enter_dead(s, f, true); | |
034c6ed7 LP |
2688 | break; |
2689 | ||
2690 | default: | |
2691 | assert_not_reached("Uh, control process died at wrong time."); | |
2692 | } | |
2693 | } | |
8c47c732 | 2694 | } |
c4e2ceae LP |
2695 | |
2696 | /* Notify clients about changed exit status */ | |
2697 | unit_add_to_dbus_queue(u); | |
a911bb9a LP |
2698 | |
2699 | /* We got one SIGCHLD for the service, let's watch all | |
2700 | * processes that are now running of the service, and watch | |
2701 | * that. Among the PIDs we then watch will be children | |
2702 | * reassigned to us, which hopefully allows us to identify | |
2703 | * when all children are gone */ | |
2704 | unit_tidy_watch_pids(u, s->main_pid, s->control_pid); | |
2705 | unit_watch_all_pids(u); | |
2706 | ||
2707 | /* If the PID set is empty now, then let's finish this off */ | |
2708 | if (set_isempty(u->pids)) | |
2709 | service_notify_cgroup_empty_event(u); | |
034c6ed7 LP |
2710 | } |
2711 | ||
718db961 LP |
2712 | static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
2713 | Service *s = SERVICE(userdata); | |
034c6ed7 LP |
2714 | |
2715 | assert(s); | |
718db961 | 2716 | assert(source == s->timer_event_source); |
034c6ed7 LP |
2717 | |
2718 | switch (s->state) { | |
2719 | ||
2720 | case SERVICE_START_PRE: | |
2721 | case SERVICE_START: | |
f2341e0a | 2722 | log_unit_warning(UNIT(s), "%s operation timed out. Terminating.", s->state == SERVICE_START ? "Start" : "Start-pre"); |
f42806df | 2723 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
80876c20 LP |
2724 | break; |
2725 | ||
034c6ed7 | 2726 | case SERVICE_START_POST: |
f2341e0a | 2727 | log_unit_warning(UNIT(s), "Start-post operation timed out. Stopping."); |
f42806df | 2728 | service_enter_stop(s, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
2729 | break; |
2730 | ||
e2f3b44c | 2731 | case SERVICE_RELOAD: |
f2341e0a | 2732 | log_unit_warning(UNIT(s), "Reload operation timed out. Stopping."); |
f42806df LP |
2733 | s->reload_result = SERVICE_FAILURE_TIMEOUT; |
2734 | service_enter_running(s, SERVICE_SUCCESS); | |
e2f3b44c LP |
2735 | break; |
2736 | ||
034c6ed7 | 2737 | case SERVICE_STOP: |
f2341e0a | 2738 | log_unit_warning(UNIT(s), "Stopping timed out. Terminating."); |
f42806df | 2739 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
2740 | break; |
2741 | ||
db2cb23b | 2742 | case SERVICE_STOP_SIGABRT: |
f2341e0a | 2743 | log_unit_warning(UNIT(s), "State 'stop-sigabrt' timed out. Terminating."); |
2ab2ab7b | 2744 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
db2cb23b UTL |
2745 | break; |
2746 | ||
034c6ed7 | 2747 | case SERVICE_STOP_SIGTERM: |
4819ff03 | 2748 | if (s->kill_context.send_sigkill) { |
f2341e0a | 2749 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Killing."); |
f42806df | 2750 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 2751 | } else { |
f2341e0a | 2752 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Skipping SIGKILL."); |
f42806df | 2753 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
ba035df2 LP |
2754 | } |
2755 | ||
034c6ed7 LP |
2756 | break; |
2757 | ||
2758 | case SERVICE_STOP_SIGKILL: | |
35b8ca3a | 2759 | /* Uh, we sent a SIGKILL and it is still not gone? |
034c6ed7 LP |
2760 | * Must be something we cannot kill, so let's just be |
2761 | * weirded out and continue */ | |
2762 | ||
f2341e0a | 2763 | log_unit_warning(UNIT(s), "Processes still around after SIGKILL. Ignoring."); |
f42806df | 2764 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
2765 | break; |
2766 | ||
2767 | case SERVICE_STOP_POST: | |
f2341e0a | 2768 | log_unit_warning(UNIT(s), "State 'stop-post' timed out. Terminating."); |
f42806df | 2769 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
2770 | break; |
2771 | ||
2772 | case SERVICE_FINAL_SIGTERM: | |
4819ff03 | 2773 | if (s->kill_context.send_sigkill) { |
f2341e0a | 2774 | log_unit_warning(UNIT(s), "State 'stop-final-sigterm' timed out. Killing."); |
f42806df | 2775 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 2776 | } else { |
f2341e0a | 2777 | log_unit_warning(UNIT(s), "State 'stop-final-sigterm' timed out. Skipping SIGKILL. Entering failed mode."); |
f42806df | 2778 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false); |
ba035df2 LP |
2779 | } |
2780 | ||
034c6ed7 LP |
2781 | break; |
2782 | ||
2783 | case SERVICE_FINAL_SIGKILL: | |
f2341e0a | 2784 | log_unit_warning(UNIT(s), "Processes still around after final SIGKILL. Entering failed mode."); |
f42806df | 2785 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true); |
034c6ed7 LP |
2786 | break; |
2787 | ||
2788 | case SERVICE_AUTO_RESTART: | |
f2341e0a | 2789 | log_unit_info(UNIT(s), |
ef417cfd | 2790 | s->restart_usec > 0 ? |
f2341e0a LP |
2791 | "Service hold-off time over, scheduling restart." : |
2792 | "Service has no hold-off time, scheduling restart."); | |
034c6ed7 LP |
2793 | service_enter_restart(s); |
2794 | break; | |
2795 | ||
2796 | default: | |
2797 | assert_not_reached("Timeout at wrong time."); | |
2798 | } | |
718db961 LP |
2799 | |
2800 | return 0; | |
2801 | } | |
2802 | ||
2803 | static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata) { | |
2804 | Service *s = SERVICE(userdata); | |
a7850c7d | 2805 | char t[FORMAT_TIMESPAN_MAX]; |
718db961 LP |
2806 | |
2807 | assert(s); | |
2808 | assert(source == s->watchdog_event_source); | |
2809 | ||
f2341e0a | 2810 | log_unit_error(UNIT(s), "Watchdog timeout (limit %s)!", |
a7850c7d | 2811 | format_timespan(t, sizeof(t), s->watchdog_usec, 1)); |
8bb2d17d | 2812 | |
db2cb23b | 2813 | service_enter_signal(s, SERVICE_STOP_SIGABRT, SERVICE_FAILURE_WATCHDOG); |
842129f5 | 2814 | |
718db961 | 2815 | return 0; |
5cb5a6ff LP |
2816 | } |
2817 | ||
a354329f | 2818 | static void service_notify_message(Unit *u, pid_t pid, char **tags, FDSet *fds) { |
8c47c732 | 2819 | Service *s = SERVICE(u); |
308d72dc | 2820 | _cleanup_free_ char *cc = NULL; |
30b5275a | 2821 | bool notify_dbus = false; |
308d72dc | 2822 | const char *e; |
8c47c732 LP |
2823 | |
2824 | assert(u); | |
2825 | ||
308d72dc | 2826 | cc = strv_join(tags, ", "); |
da13d4d2 | 2827 | |
c952c6ec | 2828 | if (s->notify_access == NOTIFY_NONE) { |
f2341e0a | 2829 | log_unit_warning(u, "Got notification message from PID "PID_FMT", but reception is disabled.", pid); |
c952c6ec | 2830 | return; |
34959677 | 2831 | } else if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) { |
336c6e46 | 2832 | if (s->main_pid != 0) |
f2341e0a | 2833 | log_unit_warning(u, "Got notification message from PID "PID_FMT", but reception only permitted for main PID "PID_FMT, pid, s->main_pid); |
336c6e46 | 2834 | else |
f2341e0a | 2835 | log_unit_debug(u, "Got notification message from PID "PID_FMT", but reception only permitted for main PID which is currently not known", pid); |
c952c6ec | 2836 | return; |
34959677 TG |
2837 | } else |
2838 | log_unit_debug(u, "Got notification message from PID "PID_FMT" (%s)", pid, isempty(cc) ? "n/a" : cc); | |
c952c6ec | 2839 | |
8c47c732 | 2840 | /* Interpret MAINPID= */ |
28849dba | 2841 | e = strv_find_startswith(tags, "MAINPID="); |
5e56b378 | 2842 | if (e && IN_SET(s->state, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) { |
28849dba | 2843 | if (parse_pid(e, &pid) < 0) |
f2341e0a | 2844 | log_unit_warning(u, "Failed to parse MAINPID= field in notification message: %s", e); |
8c47c732 | 2845 | else { |
5925dd3c | 2846 | service_set_main_pid(s, pid); |
7400b9d2 | 2847 | unit_watch_pid(UNIT(s), pid); |
30b5275a | 2848 | notify_dbus = true; |
8c47c732 LP |
2849 | } |
2850 | } | |
2851 | ||
308d72dc LP |
2852 | /* Interpret RELOADING= */ |
2853 | if (strv_find(tags, "RELOADING=1")) { | |
2854 | ||
308d72dc LP |
2855 | s->notify_state = NOTIFY_RELOADING; |
2856 | ||
2857 | if (s->state == SERVICE_RUNNING) | |
2858 | service_enter_reload_by_notify(s); | |
2859 | ||
2860 | notify_dbus = true; | |
2861 | } | |
2862 | ||
8c47c732 | 2863 | /* Interpret READY= */ |
308d72dc LP |
2864 | if (strv_find(tags, "READY=1")) { |
2865 | ||
308d72dc LP |
2866 | s->notify_state = NOTIFY_READY; |
2867 | ||
2868 | /* Type=notify services inform us about completed | |
2869 | * initialization with READY=1 */ | |
2870 | if (s->type == SERVICE_NOTIFY && s->state == SERVICE_START) | |
2871 | service_enter_start_post(s); | |
2872 | ||
2873 | /* Sending READY=1 while we are reloading informs us | |
2874 | * that the reloading is complete */ | |
2875 | if (s->state == SERVICE_RELOAD && s->control_pid == 0) | |
2876 | service_enter_running(s, SERVICE_SUCCESS); | |
2877 | ||
2878 | notify_dbus = true; | |
2879 | } | |
2880 | ||
2881 | /* Interpret STOPPING= */ | |
2882 | if (strv_find(tags, "STOPPING=1")) { | |
2883 | ||
308d72dc LP |
2884 | s->notify_state = NOTIFY_STOPPING; |
2885 | ||
2886 | if (s->state == SERVICE_RUNNING) | |
2887 | service_enter_stop_by_notify(s); | |
2888 | ||
30b5275a | 2889 | notify_dbus = true; |
8c47c732 LP |
2890 | } |
2891 | ||
2892 | /* Interpret STATUS= */ | |
28849dba | 2893 | e = strv_find_startswith(tags, "STATUS="); |
7f110ff9 | 2894 | if (e) { |
28849dba | 2895 | _cleanup_free_ char *t = NULL; |
8c47c732 | 2896 | |
28849dba LP |
2897 | if (!isempty(e)) { |
2898 | if (!utf8_is_valid(e)) | |
f2341e0a | 2899 | log_unit_warning(u, "Status message in notification message is not UTF-8 clean."); |
28849dba | 2900 | else { |
28849dba LP |
2901 | t = strdup(e); |
2902 | if (!t) | |
2903 | log_oom(); | |
3a2776bc | 2904 | } |
28849dba | 2905 | } |
8c47c732 | 2906 | |
30b5275a | 2907 | if (!streq_ptr(s->status_text, t)) { |
28849dba | 2908 | |
3a2776bc LP |
2909 | free(s->status_text); |
2910 | s->status_text = t; | |
28849dba LP |
2911 | t = NULL; |
2912 | ||
30b5275a | 2913 | notify_dbus = true; |
28849dba | 2914 | } |
8c47c732 | 2915 | } |
842129f5 | 2916 | |
4774e357 | 2917 | /* Interpret ERRNO= */ |
28849dba | 2918 | e = strv_find_startswith(tags, "ERRNO="); |
4774e357 MAA |
2919 | if (e) { |
2920 | int status_errno; | |
2921 | ||
28849dba | 2922 | if (safe_atoi(e, &status_errno) < 0 || status_errno < 0) |
f2341e0a | 2923 | log_unit_warning(u, "Failed to parse ERRNO= field in notification message: %s", e); |
4774e357 | 2924 | else { |
4774e357 MAA |
2925 | if (s->status_errno != status_errno) { |
2926 | s->status_errno = status_errno; | |
2927 | notify_dbus = true; | |
2928 | } | |
2929 | } | |
2930 | } | |
2931 | ||
6f285378 | 2932 | /* Interpret WATCHDOG= */ |
a6927d7f | 2933 | if (strv_find(tags, "WATCHDOG=1")) { |
842129f5 | 2934 | service_reset_watchdog(s); |
a6927d7f | 2935 | } |
c4e2ceae | 2936 | |
a354329f LP |
2937 | /* Add the passed fds to the fd store */ |
2938 | if (strv_find(tags, "FDSTORE=1")) { | |
2339fc93 | 2939 | service_add_fd_store_set(s, fds); |
a354329f LP |
2940 | } |
2941 | ||
c4e2ceae | 2942 | /* Notify clients about changed status or main pid */ |
30b5275a LP |
2943 | if (notify_dbus) |
2944 | unit_add_to_dbus_queue(u); | |
8c47c732 LP |
2945 | } |
2946 | ||
68db7a3b ZJS |
2947 | static int service_get_timeout(Unit *u, uint64_t *timeout) { |
2948 | Service *s = SERVICE(u); | |
2949 | int r; | |
2950 | ||
2951 | if (!s->timer_event_source) | |
2952 | return 0; | |
2953 | ||
2954 | r = sd_event_source_get_time(s->timer_event_source, timeout); | |
2955 | if (r < 0) | |
2956 | return r; | |
2957 | ||
2958 | return 1; | |
2959 | } | |
2960 | ||
05e343b7 LP |
2961 | static void service_bus_name_owner_change( |
2962 | Unit *u, | |
2963 | const char *name, | |
2964 | const char *old_owner, | |
2965 | const char *new_owner) { | |
2966 | ||
2967 | Service *s = SERVICE(u); | |
718db961 | 2968 | int r; |
05e343b7 LP |
2969 | |
2970 | assert(s); | |
2971 | assert(name); | |
2972 | ||
2973 | assert(streq(s->bus_name, name)); | |
2974 | assert(old_owner || new_owner); | |
2975 | ||
2976 | if (old_owner && new_owner) | |
f2341e0a | 2977 | log_unit_debug(u, "D-Bus name %s changed owner from %s to %s", name, old_owner, new_owner); |
05e343b7 | 2978 | else if (old_owner) |
f2341e0a | 2979 | log_unit_debug(u, "D-Bus name %s no longer registered by %s", name, old_owner); |
05e343b7 | 2980 | else |
f2341e0a | 2981 | log_unit_debug(u, "D-Bus name %s now registered by %s", name, new_owner); |
05e343b7 LP |
2982 | |
2983 | s->bus_name_good = !!new_owner; | |
2984 | ||
2985 | if (s->type == SERVICE_DBUS) { | |
2986 | ||
2987 | /* service_enter_running() will figure out what to | |
2988 | * do */ | |
2989 | if (s->state == SERVICE_RUNNING) | |
f42806df | 2990 | service_enter_running(s, SERVICE_SUCCESS); |
05e343b7 LP |
2991 | else if (s->state == SERVICE_START && new_owner) |
2992 | service_enter_start_post(s); | |
2993 | ||
2994 | } else if (new_owner && | |
2995 | s->main_pid <= 0 && | |
2996 | (s->state == SERVICE_START || | |
2997 | s->state == SERVICE_START_POST || | |
2998 | s->state == SERVICE_RUNNING || | |
2999 | s->state == SERVICE_RELOAD)) { | |
3000 | ||
5b12334d | 3001 | _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL; |
718db961 | 3002 | pid_t pid; |
05e343b7 | 3003 | |
718db961 | 3004 | /* Try to acquire PID from bus service */ |
05e343b7 | 3005 | |
056f95d0 | 3006 | r = sd_bus_get_name_creds(u->manager->api_bus, name, SD_BUS_CREDS_PID, &creds); |
5b12334d LP |
3007 | if (r >= 0) |
3008 | r = sd_bus_creds_get_pid(creds, &pid); | |
718db961 | 3009 | if (r >= 0) { |
f2341e0a | 3010 | log_unit_debug(u, "D-Bus name %s is now owned by process %u", name, (unsigned) pid); |
05e343b7 | 3011 | |
718db961 LP |
3012 | service_set_main_pid(s, pid); |
3013 | unit_watch_pid(UNIT(s), pid); | |
3014 | } | |
7400b9d2 | 3015 | } |
05e343b7 LP |
3016 | } |
3017 | ||
16115b0a | 3018 | int service_set_socket_fd(Service *s, int fd, Socket *sock, bool selinux_context_net) { |
79a98c60 LP |
3019 | _cleanup_free_ char *peer = NULL; |
3020 | int r; | |
57020a3a | 3021 | |
4f2d528d LP |
3022 | assert(s); |
3023 | assert(fd >= 0); | |
3024 | ||
3025 | /* This is called by the socket code when instantiating a new | |
3026 | * service for a stream socket and the socket needs to be | |
3027 | * configured. */ | |
3028 | ||
1124fe6f | 3029 | if (UNIT(s)->load_state != UNIT_LOADED) |
4f2d528d LP |
3030 | return -EINVAL; |
3031 | ||
3032 | if (s->socket_fd >= 0) | |
3033 | return -EBUSY; | |
3034 | ||
3035 | if (s->state != SERVICE_DEAD) | |
3036 | return -EAGAIN; | |
3037 | ||
79a98c60 LP |
3038 | if (getpeername_pretty(fd, &peer) >= 0) { |
3039 | ||
3040 | if (UNIT(s)->description) { | |
3041 | _cleanup_free_ char *a; | |
3042 | ||
3043 | a = strjoin(UNIT(s)->description, " (", peer, ")", NULL); | |
3044 | if (!a) | |
3045 | return -ENOMEM; | |
3046 | ||
3047 | r = unit_set_description(UNIT(s), a); | |
3048 | } else | |
3049 | r = unit_set_description(UNIT(s), peer); | |
3050 | ||
3051 | if (r < 0) | |
3052 | return r; | |
3053 | } | |
3054 | ||
4f2d528d | 3055 | s->socket_fd = fd; |
16115b0a | 3056 | s->socket_fd_selinux_context_net = selinux_context_net; |
6cf6bbc2 | 3057 | |
57020a3a LP |
3058 | unit_ref_set(&s->accept_socket, UNIT(sock)); |
3059 | ||
3060 | return unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false); | |
4f2d528d LP |
3061 | } |
3062 | ||
fdf20a31 | 3063 | static void service_reset_failed(Unit *u) { |
5632e374 LP |
3064 | Service *s = SERVICE(u); |
3065 | ||
3066 | assert(s); | |
3067 | ||
fdf20a31 | 3068 | if (s->state == SERVICE_FAILED) |
5632e374 LP |
3069 | service_set_state(s, SERVICE_DEAD); |
3070 | ||
f42806df LP |
3071 | s->result = SERVICE_SUCCESS; |
3072 | s->reload_result = SERVICE_SUCCESS; | |
451b34cc LP |
3073 | |
3074 | RATELIMIT_RESET(s->start_limit); | |
5632e374 LP |
3075 | } |
3076 | ||
718db961 | 3077 | static int service_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
8a0867d6 | 3078 | Service *s = SERVICE(u); |
41efeaec | 3079 | |
814cc562 | 3080 | return unit_kill_common(u, who, signo, s->main_pid, s->control_pid, error); |
8a0867d6 LP |
3081 | } |
3082 | ||
94f04347 LP |
3083 | static const char* const service_state_table[_SERVICE_STATE_MAX] = { |
3084 | [SERVICE_DEAD] = "dead", | |
3085 | [SERVICE_START_PRE] = "start-pre", | |
3086 | [SERVICE_START] = "start", | |
3087 | [SERVICE_START_POST] = "start-post", | |
3088 | [SERVICE_RUNNING] = "running", | |
80876c20 | 3089 | [SERVICE_EXITED] = "exited", |
94f04347 LP |
3090 | [SERVICE_RELOAD] = "reload", |
3091 | [SERVICE_STOP] = "stop", | |
1378a3b5 | 3092 | [SERVICE_STOP_SIGABRT] = "stop-sigabrt", |
94f04347 LP |
3093 | [SERVICE_STOP_SIGTERM] = "stop-sigterm", |
3094 | [SERVICE_STOP_SIGKILL] = "stop-sigkill", | |
3095 | [SERVICE_STOP_POST] = "stop-post", | |
3096 | [SERVICE_FINAL_SIGTERM] = "final-sigterm", | |
3097 | [SERVICE_FINAL_SIGKILL] = "final-sigkill", | |
fdf20a31 | 3098 | [SERVICE_FAILED] = "failed", |
94f04347 LP |
3099 | [SERVICE_AUTO_RESTART] = "auto-restart", |
3100 | }; | |
3101 | ||
3102 | DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState); | |
3103 | ||
3104 | static const char* const service_restart_table[_SERVICE_RESTART_MAX] = { | |
525ee6f4 LP |
3105 | [SERVICE_RESTART_NO] = "no", |
3106 | [SERVICE_RESTART_ON_SUCCESS] = "on-success", | |
50caaedb | 3107 | [SERVICE_RESTART_ON_FAILURE] = "on-failure", |
6cfe2fde | 3108 | [SERVICE_RESTART_ON_ABNORMAL] = "on-abnormal", |
dc99a976 | 3109 | [SERVICE_RESTART_ON_WATCHDOG] = "on-watchdog", |
50caaedb | 3110 | [SERVICE_RESTART_ON_ABORT] = "on-abort", |
6cfe2fde | 3111 | [SERVICE_RESTART_ALWAYS] = "always", |
94f04347 LP |
3112 | }; |
3113 | ||
3114 | DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart); | |
3115 | ||
3116 | static const char* const service_type_table[_SERVICE_TYPE_MAX] = { | |
94f04347 | 3117 | [SERVICE_SIMPLE] = "simple", |
0d624a78 | 3118 | [SERVICE_FORKING] = "forking", |
34e9ba66 | 3119 | [SERVICE_ONESHOT] = "oneshot", |
8c47c732 | 3120 | [SERVICE_DBUS] = "dbus", |
f2b68789 LP |
3121 | [SERVICE_NOTIFY] = "notify", |
3122 | [SERVICE_IDLE] = "idle" | |
94f04347 LP |
3123 | }; |
3124 | ||
3125 | DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType); | |
3126 | ||
e537352b | 3127 | static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = { |
94f04347 LP |
3128 | [SERVICE_EXEC_START_PRE] = "ExecStartPre", |
3129 | [SERVICE_EXEC_START] = "ExecStart", | |
3130 | [SERVICE_EXEC_START_POST] = "ExecStartPost", | |
3131 | [SERVICE_EXEC_RELOAD] = "ExecReload", | |
3132 | [SERVICE_EXEC_STOP] = "ExecStop", | |
3133 | [SERVICE_EXEC_STOP_POST] = "ExecStopPost", | |
3134 | }; | |
3135 | ||
3136 | DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand); | |
3137 | ||
c952c6ec LP |
3138 | static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = { |
3139 | [NOTIFY_NONE] = "none", | |
3140 | [NOTIFY_MAIN] = "main", | |
3141 | [NOTIFY_ALL] = "all" | |
3142 | }; | |
3143 | ||
3144 | DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess); | |
3145 | ||
308d72dc LP |
3146 | static const char* const notify_state_table[_NOTIFY_STATE_MAX] = { |
3147 | [NOTIFY_UNKNOWN] = "unknown", | |
3148 | [NOTIFY_READY] = "ready", | |
3149 | [NOTIFY_RELOADING] = "reloading", | |
3150 | [NOTIFY_STOPPING] = "stopping", | |
3151 | }; | |
3152 | ||
3153 | DEFINE_STRING_TABLE_LOOKUP(notify_state, NotifyState); | |
3154 | ||
f42806df LP |
3155 | static const char* const service_result_table[_SERVICE_RESULT_MAX] = { |
3156 | [SERVICE_SUCCESS] = "success", | |
3157 | [SERVICE_FAILURE_RESOURCES] = "resources", | |
3158 | [SERVICE_FAILURE_TIMEOUT] = "timeout", | |
3159 | [SERVICE_FAILURE_EXIT_CODE] = "exit-code", | |
3160 | [SERVICE_FAILURE_SIGNAL] = "signal", | |
bb242b7b | 3161 | [SERVICE_FAILURE_CORE_DUMP] = "core-dump", |
8d1b002a LP |
3162 | [SERVICE_FAILURE_WATCHDOG] = "watchdog", |
3163 | [SERVICE_FAILURE_START_LIMIT] = "start-limit" | |
f42806df LP |
3164 | }; |
3165 | ||
3166 | DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult); | |
3167 | ||
87f0e418 | 3168 | const UnitVTable service_vtable = { |
7d17cfbc | 3169 | .object_size = sizeof(Service), |
718db961 LP |
3170 | .exec_context_offset = offsetof(Service, exec_context), |
3171 | .cgroup_context_offset = offsetof(Service, cgroup_context), | |
3172 | .kill_context_offset = offsetof(Service, kill_context), | |
613b411c | 3173 | .exec_runtime_offset = offsetof(Service, exec_runtime), |
3ef63c31 | 3174 | |
f975e971 LP |
3175 | .sections = |
3176 | "Unit\0" | |
3177 | "Service\0" | |
3178 | "Install\0", | |
4ad49000 | 3179 | .private_section = "Service", |
71645aca | 3180 | |
034c6ed7 LP |
3181 | .init = service_init, |
3182 | .done = service_done, | |
a16e1123 | 3183 | .load = service_load, |
a354329f | 3184 | .release_resources = service_release_resources, |
a16e1123 LP |
3185 | |
3186 | .coldplug = service_coldplug, | |
034c6ed7 | 3187 | |
5cb5a6ff LP |
3188 | .dump = service_dump, |
3189 | ||
3190 | .start = service_start, | |
3191 | .stop = service_stop, | |
3192 | .reload = service_reload, | |
3193 | ||
034c6ed7 LP |
3194 | .can_reload = service_can_reload, |
3195 | ||
8a0867d6 LP |
3196 | .kill = service_kill, |
3197 | ||
a16e1123 LP |
3198 | .serialize = service_serialize, |
3199 | .deserialize_item = service_deserialize_item, | |
3200 | ||
5cb5a6ff | 3201 | .active_state = service_active_state, |
10a94420 | 3202 | .sub_state_to_string = service_sub_state_to_string, |
5cb5a6ff | 3203 | |
701cc384 LP |
3204 | .check_gc = service_check_gc, |
3205 | .check_snapshot = service_check_snapshot, | |
3206 | ||
034c6ed7 | 3207 | .sigchld_event = service_sigchld_event, |
2c4104f0 | 3208 | |
fdf20a31 | 3209 | .reset_failed = service_reset_failed, |
5632e374 | 3210 | |
4ad49000 | 3211 | .notify_cgroup_empty = service_notify_cgroup_empty_event, |
8c47c732 | 3212 | .notify_message = service_notify_message, |
8e274523 | 3213 | |
05e343b7 | 3214 | .bus_name_owner_change = service_bus_name_owner_change, |
05e343b7 | 3215 | |
c4e2ceae | 3216 | .bus_interface = "org.freedesktop.systemd1.Service", |
718db961 | 3217 | .bus_vtable = bus_service_vtable, |
74c964d3 LP |
3218 | .bus_set_property = bus_service_set_property, |
3219 | .bus_commit_properties = bus_service_commit_properties, | |
4139c1b2 | 3220 | |
68db7a3b | 3221 | .get_timeout = service_get_timeout, |
718db961 LP |
3222 | .can_transient = true, |
3223 | ||
c6918296 MS |
3224 | .status_message_formats = { |
3225 | .starting_stopping = { | |
3226 | [0] = "Starting %s...", | |
3227 | [1] = "Stopping %s...", | |
3228 | }, | |
3229 | .finished_start_job = { | |
3230 | [JOB_DONE] = "Started %s.", | |
3231 | [JOB_FAILED] = "Failed to start %s.", | |
3232 | [JOB_DEPENDENCY] = "Dependency failed for %s.", | |
3233 | [JOB_TIMEOUT] = "Timed out starting %s.", | |
3234 | }, | |
3235 | .finished_stop_job = { | |
3236 | [JOB_DONE] = "Stopped %s.", | |
3237 | [JOB_FAILED] = "Stopped (with error) %s.", | |
3238 | [JOB_TIMEOUT] = "Timed out stopping %s.", | |
3239 | }, | |
3240 | }, | |
5cb5a6ff | 3241 | }; |