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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
a7334b09 LP |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright 2010 Lennart Poettering | |
6 | ||
7 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
8 | under the terms of the GNU Lesser General Public License as published by |
9 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
10 | (at your option) any later version. |
11 | ||
12 | systemd is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 15 | Lesser General Public License for more details. |
a7334b09 | 16 | |
5430f7f2 | 17 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
18 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
19 | ***/ | |
20 | ||
5cb5a6ff | 21 | #include <errno.h> |
034c6ed7 | 22 | #include <signal.h> |
2c4104f0 | 23 | #include <unistd.h> |
5cb5a6ff | 24 | |
7a0019d3 LP |
25 | #include "sd-messages.h" |
26 | ||
b5efdb8a | 27 | #include "alloc-util.h" |
574634bc | 28 | #include "async.h" |
4f5dd394 LP |
29 | #include "bus-error.h" |
30 | #include "bus-kernel.h" | |
31 | #include "bus-util.h" | |
4139c1b2 | 32 | #include "dbus-service.h" |
f6a6225e | 33 | #include "def.h" |
4d1a6904 | 34 | #include "env-util.h" |
4f5dd394 LP |
35 | #include "escape.h" |
36 | #include "exit-status.h" | |
3ffd4af2 | 37 | #include "fd-util.h" |
a5c32cff | 38 | #include "fileio.h" |
f97b34a6 | 39 | #include "format-util.h" |
f4f15635 | 40 | #include "fs-util.h" |
4f5dd394 LP |
41 | #include "load-dropin.h" |
42 | #include "load-fragment.h" | |
43 | #include "log.h" | |
44 | #include "manager.h" | |
6bedfcbb | 45 | #include "parse-util.h" |
4f5dd394 | 46 | #include "path-util.h" |
0b452006 | 47 | #include "process-util.h" |
3ffd4af2 | 48 | #include "service.h" |
24882e06 | 49 | #include "signal-util.h" |
4f5dd394 | 50 | #include "special.h" |
e266c068 | 51 | #include "stdio-util.h" |
8b43440b | 52 | #include "string-table.h" |
07630cea | 53 | #include "string-util.h" |
4f5dd394 LP |
54 | #include "strv.h" |
55 | #include "unit-name.h" | |
4f5dd394 LP |
56 | #include "unit.h" |
57 | #include "utf8.h" | |
58 | #include "util.h" | |
034c6ed7 | 59 | |
acbb0225 | 60 | static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = { |
87f0e418 LP |
61 | [SERVICE_DEAD] = UNIT_INACTIVE, |
62 | [SERVICE_START_PRE] = UNIT_ACTIVATING, | |
63 | [SERVICE_START] = UNIT_ACTIVATING, | |
64 | [SERVICE_START_POST] = UNIT_ACTIVATING, | |
65 | [SERVICE_RUNNING] = UNIT_ACTIVE, | |
80876c20 | 66 | [SERVICE_EXITED] = UNIT_ACTIVE, |
032ff4af | 67 | [SERVICE_RELOAD] = UNIT_RELOADING, |
87f0e418 | 68 | [SERVICE_STOP] = UNIT_DEACTIVATING, |
db2cb23b | 69 | [SERVICE_STOP_SIGABRT] = UNIT_DEACTIVATING, |
87f0e418 LP |
70 | [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, |
71 | [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
72 | [SERVICE_STOP_POST] = UNIT_DEACTIVATING, | |
73 | [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, | |
74 | [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
fdf20a31 | 75 | [SERVICE_FAILED] = UNIT_FAILED, |
6124958c | 76 | [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING |
034c6ed7 | 77 | }; |
5cb5a6ff | 78 | |
e056b01d LP |
79 | /* For Type=idle we never want to delay any other jobs, hence we |
80 | * consider idle jobs active as soon as we start working on them */ | |
81 | static const UnitActiveState state_translation_table_idle[_SERVICE_STATE_MAX] = { | |
82 | [SERVICE_DEAD] = UNIT_INACTIVE, | |
83 | [SERVICE_START_PRE] = UNIT_ACTIVE, | |
84 | [SERVICE_START] = UNIT_ACTIVE, | |
85 | [SERVICE_START_POST] = UNIT_ACTIVE, | |
86 | [SERVICE_RUNNING] = UNIT_ACTIVE, | |
87 | [SERVICE_EXITED] = UNIT_ACTIVE, | |
88 | [SERVICE_RELOAD] = UNIT_RELOADING, | |
89 | [SERVICE_STOP] = UNIT_DEACTIVATING, | |
db2cb23b | 90 | [SERVICE_STOP_SIGABRT] = UNIT_DEACTIVATING, |
e056b01d LP |
91 | [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, |
92 | [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
93 | [SERVICE_STOP_POST] = UNIT_DEACTIVATING, | |
94 | [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, | |
95 | [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
96 | [SERVICE_FAILED] = UNIT_FAILED, | |
97 | [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING | |
98 | }; | |
99 | ||
718db961 LP |
100 | static int service_dispatch_io(sd_event_source *source, int fd, uint32_t events, void *userdata); |
101 | static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); | |
102 | static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata); | |
103 | ||
842129f5 | 104 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f); |
308d72dc | 105 | static void service_enter_reload_by_notify(Service *s); |
842129f5 | 106 | |
a16e1123 LP |
107 | static void service_init(Unit *u) { |
108 | Service *s = SERVICE(u); | |
109 | ||
110 | assert(u); | |
ac155bb8 | 111 | assert(u->load_state == UNIT_STUB); |
a16e1123 | 112 | |
1f19a534 OS |
113 | s->timeout_start_usec = u->manager->default_timeout_start_usec; |
114 | s->timeout_stop_usec = u->manager->default_timeout_stop_usec; | |
115 | s->restart_usec = u->manager->default_restart_usec; | |
36c16a7c | 116 | s->runtime_max_usec = USEC_INFINITY; |
0b86feac | 117 | s->type = _SERVICE_TYPE_INVALID; |
a16e1123 | 118 | s->socket_fd = -1; |
a34ceba6 | 119 | s->stdin_fd = s->stdout_fd = s->stderr_fd = -1; |
3185a36b | 120 | s->guess_main_pid = true; |
a16e1123 | 121 | |
a16e1123 LP |
122 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; |
123 | } | |
124 | ||
5e94833f LP |
125 | static void service_unwatch_control_pid(Service *s) { |
126 | assert(s); | |
127 | ||
128 | if (s->control_pid <= 0) | |
129 | return; | |
130 | ||
131 | unit_unwatch_pid(UNIT(s), s->control_pid); | |
132 | s->control_pid = 0; | |
133 | } | |
134 | ||
135 | static void service_unwatch_main_pid(Service *s) { | |
136 | assert(s); | |
137 | ||
138 | if (s->main_pid <= 0) | |
139 | return; | |
140 | ||
141 | unit_unwatch_pid(UNIT(s), s->main_pid); | |
142 | s->main_pid = 0; | |
143 | } | |
144 | ||
3e52541e MS |
145 | static void service_unwatch_pid_file(Service *s) { |
146 | if (!s->pid_file_pathspec) | |
147 | return; | |
148 | ||
f2341e0a | 149 | log_unit_debug(UNIT(s), "Stopping watch for PID file %s", s->pid_file_pathspec->path); |
718db961 | 150 | path_spec_unwatch(s->pid_file_pathspec); |
3e52541e | 151 | path_spec_done(s->pid_file_pathspec); |
a1e58e8e | 152 | s->pid_file_pathspec = mfree(s->pid_file_pathspec); |
3e52541e MS |
153 | } |
154 | ||
5925dd3c | 155 | static int service_set_main_pid(Service *s, pid_t pid) { |
e55224ca LP |
156 | pid_t ppid; |
157 | ||
5925dd3c LP |
158 | assert(s); |
159 | ||
160 | if (pid <= 1) | |
161 | return -EINVAL; | |
162 | ||
df0ff127 | 163 | if (pid == getpid_cached()) |
5925dd3c LP |
164 | return -EINVAL; |
165 | ||
7400b9d2 LP |
166 | if (s->main_pid == pid && s->main_pid_known) |
167 | return 0; | |
168 | ||
169 | if (s->main_pid != pid) { | |
170 | service_unwatch_main_pid(s); | |
171 | exec_status_start(&s->main_exec_status, pid); | |
172 | } | |
41efeaec | 173 | |
6dfa5494 LP |
174 | s->main_pid = pid; |
175 | s->main_pid_known = true; | |
176 | ||
df0ff127 | 177 | if (get_process_ppid(pid, &ppid) >= 0 && ppid != getpid_cached()) { |
f2341e0a | 178 | 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 |
179 | s->main_pid_alien = true; |
180 | } else | |
181 | s->main_pid_alien = false; | |
5925dd3c LP |
182 | |
183 | return 0; | |
184 | } | |
185 | ||
3e7a1f50 | 186 | void service_close_socket_fd(Service *s) { |
4f2d528d LP |
187 | assert(s); |
188 | ||
5cc3985e | 189 | /* Undo the effect of service_set_socket_fd(). */ |
4f2d528d | 190 | |
5cc3985e | 191 | s->socket_fd = asynchronous_close(s->socket_fd); |
6cf6bbc2 | 192 | |
5cc3985e LP |
193 | if (UNIT_ISSET(s->accept_socket)) { |
194 | socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket))); | |
195 | unit_ref_unset(&s->accept_socket); | |
196 | } | |
6cf6bbc2 LP |
197 | } |
198 | ||
a6927d7f MO |
199 | static void service_stop_watchdog(Service *s) { |
200 | assert(s); | |
201 | ||
718db961 | 202 | s->watchdog_event_source = sd_event_source_unref(s->watchdog_event_source); |
842129f5 | 203 | s->watchdog_timestamp = DUAL_TIMESTAMP_NULL; |
a6927d7f MO |
204 | } |
205 | ||
2787d83c M |
206 | static usec_t service_get_watchdog_usec(Service *s) { |
207 | assert(s); | |
208 | ||
209 | if (s->watchdog_override_enable) | |
210 | return s->watchdog_override_usec; | |
211 | else | |
212 | return s->watchdog_usec; | |
213 | } | |
214 | ||
842129f5 | 215 | static void service_start_watchdog(Service *s) { |
bb242b7b | 216 | int r; |
2787d83c | 217 | usec_t watchdog_usec; |
bb242b7b MO |
218 | |
219 | assert(s); | |
220 | ||
2787d83c | 221 | watchdog_usec = service_get_watchdog_usec(s); |
4c701096 | 222 | if (IN_SET(watchdog_usec, 0, USEC_INFINITY)) |
bb242b7b MO |
223 | return; |
224 | ||
718db961 | 225 | if (s->watchdog_event_source) { |
2787d83c | 226 | r = sd_event_source_set_time(s->watchdog_event_source, usec_add(s->watchdog_timestamp.monotonic, watchdog_usec)); |
718db961 | 227 | if (r < 0) { |
f2341e0a | 228 | log_unit_warning_errno(UNIT(s), r, "Failed to reset watchdog timer: %m"); |
718db961 LP |
229 | return; |
230 | } | |
231 | ||
842129f5 | 232 | r = sd_event_source_set_enabled(s->watchdog_event_source, SD_EVENT_ONESHOT); |
c4ef3317 | 233 | } else { |
6a0f1f6d LP |
234 | r = sd_event_add_time( |
235 | UNIT(s)->manager->event, | |
236 | &s->watchdog_event_source, | |
237 | CLOCK_MONOTONIC, | |
2787d83c | 238 | usec_add(s->watchdog_timestamp.monotonic, watchdog_usec), 0, |
6a0f1f6d | 239 | service_dispatch_watchdog, s); |
c4ef3317 | 240 | if (r < 0) { |
f2341e0a | 241 | log_unit_warning_errno(UNIT(s), r, "Failed to add watchdog timer: %m"); |
c4ef3317 LP |
242 | return; |
243 | } | |
244 | ||
7dfbe2e3 TG |
245 | (void) sd_event_source_set_description(s->watchdog_event_source, "service-watchdog"); |
246 | ||
c4ef3317 LP |
247 | /* Let's process everything else which might be a sign |
248 | * of living before we consider a service died. */ | |
249 | r = sd_event_source_set_priority(s->watchdog_event_source, SD_EVENT_PRIORITY_IDLE); | |
250 | } | |
718db961 | 251 | |
bb242b7b | 252 | if (r < 0) |
f2341e0a | 253 | log_unit_warning_errno(UNIT(s), r, "Failed to install watchdog timer: %m"); |
bb242b7b MO |
254 | } |
255 | ||
a327431b DB |
256 | static void service_extend_timeout(Service *s, usec_t extend_timeout_usec) { |
257 | assert(s); | |
258 | ||
259 | if (s->timer_event_source) { | |
260 | uint64_t current = 0, extended = 0; | |
261 | int r; | |
262 | ||
263 | if (IN_SET(extend_timeout_usec, 0, USEC_INFINITY)) | |
264 | return; | |
265 | ||
266 | extended = usec_add(now(CLOCK_MONOTONIC), extend_timeout_usec); | |
267 | ||
268 | r = sd_event_source_get_time(s->timer_event_source, ¤t); | |
269 | if (r < 0) | |
270 | log_unit_error_errno(UNIT(s), r, "Failed to retrieve timeout timer: %m"); | |
271 | else if (extended > current) { | |
272 | r = sd_event_source_set_time(s->timer_event_source, extended); | |
273 | if (r < 0) | |
274 | log_unit_warning_errno(UNIT(s), r, "Failed to set timeout timer: %m"); | |
275 | } | |
276 | ||
277 | if (s->watchdog_event_source) { | |
278 | /* extend watchdog if necessary. We've asked for an extended timeout so we | |
279 | * shouldn't expect a watchdog timeout in the interval in between */ | |
280 | r = sd_event_source_get_time(s->watchdog_event_source, ¤t); | |
281 | if (r < 0) { | |
282 | log_unit_error_errno(UNIT(s), r, "Failed to retrieve watchdog timer: %m"); | |
283 | return; | |
284 | } | |
285 | ||
286 | if (extended > current) { | |
287 | r = sd_event_source_set_time(s->watchdog_event_source, extended); | |
288 | if (r < 0) | |
289 | log_unit_warning_errno(UNIT(s), r, "Failed to set watchdog timer: %m"); | |
290 | } | |
291 | } | |
292 | } | |
293 | } | |
294 | ||
a6927d7f MO |
295 | static void service_reset_watchdog(Service *s) { |
296 | assert(s); | |
297 | ||
298 | dual_timestamp_get(&s->watchdog_timestamp); | |
842129f5 | 299 | service_start_watchdog(s); |
a6927d7f MO |
300 | } |
301 | ||
2787d83c M |
302 | static void service_reset_watchdog_timeout(Service *s, usec_t watchdog_override_usec) { |
303 | assert(s); | |
304 | ||
305 | s->watchdog_override_enable = true; | |
306 | s->watchdog_override_usec = watchdog_override_usec; | |
307 | service_reset_watchdog(s); | |
308 | ||
309 | log_unit_debug(UNIT(s), "watchdog_usec="USEC_FMT, s->watchdog_usec); | |
310 | log_unit_debug(UNIT(s), "watchdog_override_usec="USEC_FMT, s->watchdog_override_usec); | |
311 | } | |
312 | ||
a354329f LP |
313 | static void service_fd_store_unlink(ServiceFDStore *fs) { |
314 | ||
315 | if (!fs) | |
316 | return; | |
317 | ||
318 | if (fs->service) { | |
319 | assert(fs->service->n_fd_store > 0); | |
320 | LIST_REMOVE(fd_store, fs->service->fd_store, fs); | |
321 | fs->service->n_fd_store--; | |
322 | } | |
323 | ||
324 | if (fs->event_source) { | |
325 | sd_event_source_set_enabled(fs->event_source, SD_EVENT_OFF); | |
326 | sd_event_source_unref(fs->event_source); | |
327 | } | |
328 | ||
8dd4c05b | 329 | free(fs->fdname); |
a354329f LP |
330 | safe_close(fs->fd); |
331 | free(fs); | |
332 | } | |
333 | ||
f0bfbfac ZJS |
334 | static void service_release_fd_store(Service *s) { |
335 | assert(s); | |
336 | ||
7eb2a8a1 LP |
337 | if (s->n_keep_fd_store > 0) |
338 | return; | |
339 | ||
f0bfbfac ZJS |
340 | log_unit_debug(UNIT(s), "Releasing all stored fds"); |
341 | while (s->fd_store) | |
342 | service_fd_store_unlink(s->fd_store); | |
343 | ||
344 | assert(s->n_fd_store == 0); | |
345 | } | |
346 | ||
7eb2a8a1 | 347 | static void service_release_resources(Unit *u) { |
a354329f LP |
348 | Service *s = SERVICE(u); |
349 | ||
350 | assert(s); | |
351 | ||
a34ceba6 | 352 | if (!s->fd_store && s->stdin_fd < 0 && s->stdout_fd < 0 && s->stderr_fd < 0) |
a354329f LP |
353 | return; |
354 | ||
f0bfbfac | 355 | log_unit_debug(u, "Releasing resources."); |
a354329f | 356 | |
a34ceba6 LP |
357 | s->stdin_fd = safe_close(s->stdin_fd); |
358 | s->stdout_fd = safe_close(s->stdout_fd); | |
359 | s->stderr_fd = safe_close(s->stderr_fd); | |
360 | ||
7eb2a8a1 | 361 | service_release_fd_store(s); |
a354329f LP |
362 | } |
363 | ||
87f0e418 LP |
364 | static void service_done(Unit *u) { |
365 | Service *s = SERVICE(u); | |
44d8db9e LP |
366 | |
367 | assert(s); | |
368 | ||
a1e58e8e LP |
369 | s->pid_file = mfree(s->pid_file); |
370 | s->status_text = mfree(s->status_text); | |
efe6e7d3 | 371 | |
e8a565cb | 372 | s->exec_runtime = exec_runtime_unref(s->exec_runtime, false); |
e537352b | 373 | exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); |
44d8db9e | 374 | s->control_command = NULL; |
867b3b7d | 375 | s->main_command = NULL; |
44d8db9e | 376 | |
29206d46 LP |
377 | dynamic_creds_unref(&s->dynamic_creds); |
378 | ||
37520c1b LP |
379 | exit_status_set_free(&s->restart_prevent_status); |
380 | exit_status_set_free(&s->restart_force_status); | |
381 | exit_status_set_free(&s->success_status); | |
96342de6 | 382 | |
44d8db9e LP |
383 | /* This will leak a process, but at least no memory or any of |
384 | * our resources */ | |
5e94833f LP |
385 | service_unwatch_main_pid(s); |
386 | service_unwatch_control_pid(s); | |
3e52541e | 387 | service_unwatch_pid_file(s); |
44d8db9e | 388 | |
05e343b7 | 389 | if (s->bus_name) { |
ac155bb8 | 390 | unit_unwatch_bus_name(u, s->bus_name); |
a1e58e8e | 391 | s->bus_name = mfree(s->bus_name); |
05e343b7 LP |
392 | } |
393 | ||
d8ccf5fd DM |
394 | s->bus_name_owner = mfree(s->bus_name_owner); |
395 | ||
4f2d528d | 396 | service_close_socket_fd(s); |
9d565427 | 397 | s->peer = socket_peer_unref(s->peer); |
4f2d528d | 398 | |
57020a3a | 399 | unit_ref_unset(&s->accept_socket); |
f976f3f6 | 400 | |
bb242b7b MO |
401 | service_stop_watchdog(s); |
402 | ||
718db961 | 403 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
a354329f | 404 | |
7eb2a8a1 | 405 | service_release_resources(u); |
718db961 LP |
406 | } |
407 | ||
2339fc93 LP |
408 | static int on_fd_store_io(sd_event_source *e, int fd, uint32_t revents, void *userdata) { |
409 | ServiceFDStore *fs = userdata; | |
410 | ||
411 | assert(e); | |
412 | assert(fs); | |
413 | ||
414 | /* If we get either EPOLLHUP or EPOLLERR, it's time to remove this entry from the fd store */ | |
16f70d63 ZJS |
415 | log_unit_debug(UNIT(fs->service), |
416 | "Received %s on stored fd %d (%s), closing.", | |
417 | revents & EPOLLERR ? "EPOLLERR" : "EPOLLHUP", | |
418 | fs->fd, strna(fs->fdname)); | |
2339fc93 LP |
419 | service_fd_store_unlink(fs); |
420 | return 0; | |
421 | } | |
422 | ||
8dd4c05b | 423 | static int service_add_fd_store(Service *s, int fd, const char *name) { |
2339fc93 LP |
424 | ServiceFDStore *fs; |
425 | int r; | |
426 | ||
9021ff17 ZJS |
427 | /* fd is always consumed if we return >= 0 */ |
428 | ||
2339fc93 LP |
429 | assert(s); |
430 | assert(fd >= 0); | |
431 | ||
432 | if (s->n_fd_store >= s->n_fd_store_max) | |
b0924635 ZJS |
433 | return -EXFULL; /* Our store is full. |
434 | * Use this errno rather than E[NM]FILE to distinguish from | |
435 | * the case where systemd itself hits the file limit. */ | |
2339fc93 LP |
436 | |
437 | LIST_FOREACH(fd_store, fs, s->fd_store) { | |
438 | r = same_fd(fs->fd, fd); | |
439 | if (r < 0) | |
440 | return r; | |
441 | if (r > 0) { | |
2339fc93 | 442 | safe_close(fd); |
9021ff17 | 443 | return 0; /* fd already included */ |
2339fc93 LP |
444 | } |
445 | } | |
446 | ||
447 | fs = new0(ServiceFDStore, 1); | |
448 | if (!fs) | |
449 | return -ENOMEM; | |
450 | ||
451 | fs->fd = fd; | |
452 | fs->service = s; | |
8dd4c05b | 453 | fs->fdname = strdup(name ?: "stored"); |
17dec0f7 | 454 | if (!fs->fdname) { |
455 | free(fs); | |
8dd4c05b | 456 | return -ENOMEM; |
17dec0f7 | 457 | } |
2339fc93 LP |
458 | |
459 | r = sd_event_add_io(UNIT(s)->manager->event, &fs->event_source, fd, 0, on_fd_store_io, fs); | |
3ceb72e5 | 460 | if (r < 0 && r != -EPERM) { /* EPERM indicates fds that aren't pollable, which is OK */ |
8dd4c05b | 461 | free(fs->fdname); |
2339fc93 LP |
462 | free(fs); |
463 | return r; | |
3ceb72e5 LP |
464 | } else if (r >= 0) |
465 | (void) sd_event_source_set_description(fs->event_source, "service-fd-store"); | |
7dfbe2e3 | 466 | |
2339fc93 LP |
467 | LIST_PREPEND(fd_store, s->fd_store, fs); |
468 | s->n_fd_store++; | |
469 | ||
9021ff17 | 470 | return 1; /* fd newly stored */ |
2339fc93 LP |
471 | } |
472 | ||
8dd4c05b | 473 | static int service_add_fd_store_set(Service *s, FDSet *fds, const char *name) { |
2339fc93 LP |
474 | int r; |
475 | ||
476 | assert(s); | |
477 | ||
b0924635 | 478 | while (fdset_size(fds) > 0) { |
2339fc93 LP |
479 | _cleanup_close_ int fd = -1; |
480 | ||
481 | fd = fdset_steal_first(fds); | |
482 | if (fd < 0) | |
483 | break; | |
484 | ||
8dd4c05b | 485 | r = service_add_fd_store(s, fd, name); |
b0924635 ZJS |
486 | if (r == -EXFULL) |
487 | return log_unit_warning_errno(UNIT(s), r, | |
488 | "Cannot store more fds than FileDescriptorStoreMax=%u, closing remaining.", | |
489 | s->n_fd_store_max); | |
2339fc93 | 490 | if (r < 0) |
b0924635 | 491 | return log_unit_error_errno(UNIT(s), r, "Failed to add fd to store: %m"); |
9021ff17 | 492 | if (r > 0) |
16f70d63 | 493 | log_unit_debug(UNIT(s), "Added fd %u (%s) to fd store.", fd, strna(name)); |
9021ff17 | 494 | fd = -1; |
2339fc93 LP |
495 | } |
496 | ||
2339fc93 LP |
497 | return 0; |
498 | } | |
499 | ||
e78ee06d LP |
500 | static void service_remove_fd_store(Service *s, const char *name) { |
501 | ServiceFDStore *fs, *n; | |
502 | ||
503 | assert(s); | |
504 | assert(name); | |
505 | ||
506 | LIST_FOREACH_SAFE(fd_store, fs, n, s->fd_store) { | |
507 | if (!streq(fs->fdname, name)) | |
508 | continue; | |
509 | ||
510 | log_unit_debug(UNIT(s), "Got explicit request to remove fd %i (%s), closing.", fs->fd, name); | |
511 | service_fd_store_unlink(fs); | |
512 | } | |
513 | } | |
514 | ||
718db961 LP |
515 | static int service_arm_timer(Service *s, usec_t usec) { |
516 | int r; | |
517 | ||
518 | assert(s); | |
519 | ||
718db961 | 520 | if (s->timer_event_source) { |
36c16a7c | 521 | r = sd_event_source_set_time(s->timer_event_source, usec); |
718db961 LP |
522 | if (r < 0) |
523 | return r; | |
524 | ||
525 | return sd_event_source_set_enabled(s->timer_event_source, SD_EVENT_ONESHOT); | |
526 | } | |
527 | ||
36c16a7c LP |
528 | if (usec == USEC_INFINITY) |
529 | return 0; | |
530 | ||
7dfbe2e3 | 531 | r = sd_event_add_time( |
6a0f1f6d LP |
532 | UNIT(s)->manager->event, |
533 | &s->timer_event_source, | |
534 | CLOCK_MONOTONIC, | |
36c16a7c | 535 | usec, 0, |
6a0f1f6d | 536 | service_dispatch_timer, s); |
7dfbe2e3 TG |
537 | if (r < 0) |
538 | return r; | |
539 | ||
540 | (void) sd_event_source_set_description(s->timer_event_source, "service-timer"); | |
541 | ||
542 | return 0; | |
44d8db9e LP |
543 | } |
544 | ||
243b1432 LP |
545 | static int service_verify(Service *s) { |
546 | assert(s); | |
547 | ||
1124fe6f | 548 | if (UNIT(s)->load_state != UNIT_LOADED) |
243b1432 LP |
549 | return 0; |
550 | ||
96fb8242 | 551 | if (!s->exec_command[SERVICE_EXEC_START] && !s->exec_command[SERVICE_EXEC_STOP]) { |
f2341e0a | 552 | log_unit_error(UNIT(s), "Service lacks both ExecStart= and ExecStop= setting. Refusing."); |
243b1432 LP |
553 | return -EINVAL; |
554 | } | |
555 | ||
96fb8242 | 556 | if (s->type != SERVICE_ONESHOT && !s->exec_command[SERVICE_EXEC_START]) { |
f2341e0a | 557 | log_unit_error(UNIT(s), "Service has no ExecStart= setting, which is only allowed for Type=oneshot services. Refusing."); |
96fb8242 LP |
558 | return -EINVAL; |
559 | } | |
560 | ||
561 | if (!s->remain_after_exit && !s->exec_command[SERVICE_EXEC_START]) { | |
f2341e0a | 562 | log_unit_error(UNIT(s), "Service has no ExecStart= setting, which is only allowed for RemainAfterExit=yes services. Refusing."); |
96fb8242 LP |
563 | return -EINVAL; |
564 | } | |
565 | ||
566 | if (s->type != SERVICE_ONESHOT && s->exec_command[SERVICE_EXEC_START]->command_next) { | |
f2341e0a | 567 | log_unit_error(UNIT(s), "Service has more than one ExecStart= setting, which is only allowed for Type=oneshot services. Refusing."); |
6cf6bbc2 LP |
568 | return -EINVAL; |
569 | } | |
570 | ||
b0693d30 | 571 | if (s->type == SERVICE_ONESHOT && s->restart != SERVICE_RESTART_NO) { |
f2341e0a | 572 | log_unit_error(UNIT(s), "Service has Restart= setting other than no, which isn't allowed for Type=oneshot services. Refusing."); |
37520c1b LP |
573 | return -EINVAL; |
574 | } | |
575 | ||
55ebf98c | 576 | if (s->type == SERVICE_ONESHOT && !exit_status_set_is_empty(&s->restart_force_status)) { |
f2341e0a | 577 | log_unit_error(UNIT(s), "Service has RestartForceStatus= set, which isn't allowed for Type=oneshot services. Refusing."); |
b0693d30 MW |
578 | return -EINVAL; |
579 | } | |
580 | ||
05e343b7 | 581 | if (s->type == SERVICE_DBUS && !s->bus_name) { |
f2341e0a | 582 | log_unit_error(UNIT(s), "Service is of type D-Bus but no D-Bus service name has been specified. Refusing."); |
4d0e5dbd LP |
583 | return -EINVAL; |
584 | } | |
585 | ||
7e2668c6 | 586 | if (s->bus_name && s->type != SERVICE_DBUS) |
f2341e0a | 587 | log_unit_warning(UNIT(s), "Service has a D-Bus service name specified, but is not of type dbus. Ignoring."); |
7e2668c6 | 588 | |
3742095b | 589 | if (s->exec_context.pam_name && !IN_SET(s->kill_context.kill_mode, KILL_CONTROL_GROUP, KILL_MIXED)) { |
f2341e0a | 590 | log_unit_error(UNIT(s), "Service has PAM enabled. Kill mode must be set to 'control-group' or 'mixed'. Refusing."); |
05e343b7 LP |
591 | return -EINVAL; |
592 | } | |
593 | ||
6b7e5923 PS |
594 | if (s->usb_function_descriptors && !s->usb_function_strings) |
595 | log_unit_warning(UNIT(s), "Service has USBFunctionDescriptors= setting, but no USBFunctionStrings=. Ignoring."); | |
596 | ||
597 | if (!s->usb_function_descriptors && s->usb_function_strings) | |
598 | log_unit_warning(UNIT(s), "Service has USBFunctionStrings= setting, but no USBFunctionDescriptors=. Ignoring."); | |
599 | ||
36c16a7c LP |
600 | if (s->runtime_max_usec != USEC_INFINITY && s->type == SERVICE_ONESHOT) |
601 | log_unit_warning(UNIT(s), "MaxRuntimeSec= has no effect in combination with Type=oneshot. Ignoring."); | |
602 | ||
243b1432 LP |
603 | return 0; |
604 | } | |
605 | ||
a40eb732 LP |
606 | static int service_add_default_dependencies(Service *s) { |
607 | int r; | |
608 | ||
609 | assert(s); | |
610 | ||
45f06b34 LP |
611 | if (!UNIT(s)->default_dependencies) |
612 | return 0; | |
613 | ||
a40eb732 LP |
614 | /* Add a number of automatic dependencies useful for the |
615 | * majority of services. */ | |
616 | ||
463d0d15 | 617 | if (MANAGER_IS_SYSTEM(UNIT(s)->manager)) { |
cb4c247d LP |
618 | /* First, pull in the really early boot stuff, and |
619 | * require it, so that we fail if we can't acquire | |
620 | * it. */ | |
621 | ||
eef85c4a | 622 | r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, NULL, true, UNIT_DEPENDENCY_DEFAULT); |
cb4c247d LP |
623 | if (r < 0) |
624 | return r; | |
625 | } else { | |
626 | ||
627 | /* In the --user instance there's no sysinit.target, | |
628 | * in that case require basic.target instead. */ | |
629 | ||
eef85c4a | 630 | r = unit_add_dependency_by_name(UNIT(s), UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true, UNIT_DEPENDENCY_DEFAULT); |
cb4c247d LP |
631 | if (r < 0) |
632 | return r; | |
633 | } | |
634 | ||
635 | /* Second, if the rest of the base system is in the same | |
636 | * transaction, order us after it, but do not pull it in or | |
637 | * even require it. */ | |
eef85c4a | 638 | r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_BASIC_TARGET, NULL, true, UNIT_DEPENDENCY_DEFAULT); |
fccd44ec KS |
639 | if (r < 0) |
640 | return r; | |
a40eb732 | 641 | |
cb4c247d | 642 | /* Third, add us in for normal shutdown. */ |
eef85c4a | 643 | return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true, UNIT_DEPENDENCY_DEFAULT); |
a40eb732 LP |
644 | } |
645 | ||
4dfc092a LP |
646 | static void service_fix_output(Service *s) { |
647 | assert(s); | |
648 | ||
08f3be7a LP |
649 | /* If nothing has been explicitly configured, patch default output in. If input is socket/tty we avoid this |
650 | * however, since in that case we want output to default to the same place as we read input from. */ | |
4dfc092a LP |
651 | |
652 | if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT && | |
653 | s->exec_context.std_output == EXEC_OUTPUT_INHERIT && | |
654 | s->exec_context.std_input == EXEC_INPUT_NULL) | |
1124fe6f | 655 | s->exec_context.std_error = UNIT(s)->manager->default_std_error; |
4dfc092a LP |
656 | |
657 | if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT && | |
658 | s->exec_context.std_input == EXEC_INPUT_NULL) | |
1124fe6f | 659 | s->exec_context.std_output = UNIT(s)->manager->default_std_output; |
08f3be7a LP |
660 | |
661 | if (s->exec_context.std_input == EXEC_INPUT_NULL && | |
662 | s->exec_context.stdin_data_size > 0) | |
663 | s->exec_context.std_input = EXEC_INPUT_DATA; | |
4dfc092a LP |
664 | } |
665 | ||
45f06b34 LP |
666 | static int service_setup_bus_name(Service *s) { |
667 | int r; | |
668 | ||
669 | assert(s); | |
670 | ||
671 | if (!s->bus_name) | |
672 | return 0; | |
673 | ||
eef85c4a | 674 | r = unit_add_dependency_by_name(UNIT(s), UNIT_REQUIRES, SPECIAL_DBUS_SOCKET, NULL, true, UNIT_DEPENDENCY_FILE); |
222953e8 DR |
675 | if (r < 0) |
676 | return log_unit_error_errno(UNIT(s), r, "Failed to add dependency on " SPECIAL_DBUS_SOCKET ": %m"); | |
45f06b34 | 677 | |
a132bef0 | 678 | /* We always want to be ordered against dbus.socket if both are in the transaction. */ |
eef85c4a | 679 | r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_DBUS_SOCKET, NULL, true, UNIT_DEPENDENCY_FILE); |
45f06b34 | 680 | if (r < 0) |
92bed462 | 681 | return log_unit_error_errno(UNIT(s), r, "Failed to add dependency on " SPECIAL_DBUS_SOCKET ": %m"); |
45f06b34 LP |
682 | |
683 | r = unit_watch_bus_name(UNIT(s), s->bus_name); | |
684 | if (r == -EEXIST) | |
685 | return log_unit_error_errno(UNIT(s), r, "Two services allocated for the same bus name %s, refusing operation.", s->bus_name); | |
686 | if (r < 0) | |
687 | return log_unit_error_errno(UNIT(s), r, "Cannot watch bus name %s: %m", s->bus_name); | |
688 | ||
689 | return 0; | |
690 | } | |
691 | ||
8545f7ce LP |
692 | static int service_add_extras(Service *s) { |
693 | int r; | |
694 | ||
695 | assert(s); | |
696 | ||
697 | if (s->type == _SERVICE_TYPE_INVALID) { | |
698 | /* Figure out a type automatically */ | |
699 | if (s->bus_name) | |
700 | s->type = SERVICE_DBUS; | |
701 | else if (s->exec_command[SERVICE_EXEC_START]) | |
702 | s->type = SERVICE_SIMPLE; | |
703 | else | |
704 | s->type = SERVICE_ONESHOT; | |
705 | } | |
706 | ||
707 | /* Oneshot services have disabled start timeout by default */ | |
708 | if (s->type == SERVICE_ONESHOT && !s->start_timeout_defined) | |
36c16a7c | 709 | s->timeout_start_usec = USEC_INFINITY; |
8545f7ce LP |
710 | |
711 | service_fix_output(s); | |
712 | ||
713 | r = unit_patch_contexts(UNIT(s)); | |
714 | if (r < 0) | |
715 | return r; | |
716 | ||
717 | r = unit_add_exec_dependencies(UNIT(s), &s->exec_context); | |
718 | if (r < 0) | |
719 | return r; | |
720 | ||
d79200e2 | 721 | r = unit_set_default_slice(UNIT(s)); |
8545f7ce LP |
722 | if (r < 0) |
723 | return r; | |
724 | ||
725 | if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE) | |
726 | s->notify_access = NOTIFY_MAIN; | |
727 | ||
728 | if (s->watchdog_usec > 0 && s->notify_access == NOTIFY_NONE) | |
729 | s->notify_access = NOTIFY_MAIN; | |
730 | ||
45f06b34 LP |
731 | r = service_add_default_dependencies(s); |
732 | if (r < 0) | |
733 | return r; | |
8545f7ce | 734 | |
45f06b34 LP |
735 | r = service_setup_bus_name(s); |
736 | if (r < 0) | |
737 | return r; | |
8545f7ce LP |
738 | |
739 | return 0; | |
740 | } | |
741 | ||
e537352b | 742 | static int service_load(Unit *u) { |
e537352b | 743 | Service *s = SERVICE(u); |
8bb2d17d | 744 | int r; |
e537352b LP |
745 | |
746 | assert(s); | |
1e2e8133 | 747 | |
5cb5a6ff | 748 | /* Load a .service file */ |
c2756a68 LP |
749 | r = unit_load_fragment(u); |
750 | if (r < 0) | |
5cb5a6ff LP |
751 | return r; |
752 | ||
23a177ef | 753 | /* Still nothing found? Then let's give up */ |
ac155bb8 | 754 | if (u->load_state == UNIT_STUB) |
23a177ef | 755 | return -ENOENT; |
034c6ed7 | 756 | |
23a177ef | 757 | /* This is a new unit? Then let's add in some extras */ |
ac155bb8 | 758 | if (u->load_state == UNIT_LOADED) { |
c2756a68 LP |
759 | |
760 | /* We were able to load something, then let's add in | |
761 | * the dropin directories. */ | |
762 | r = unit_load_dropin(u); | |
763 | if (r < 0) | |
764 | return r; | |
765 | ||
8545f7ce LP |
766 | /* This is a new unit? Then let's add in some |
767 | * extras */ | |
768 | r = service_add_extras(s); | |
598459ce LP |
769 | if (r < 0) |
770 | return r; | |
8e274523 LP |
771 | } |
772 | ||
243b1432 | 773 | return service_verify(s); |
034c6ed7 LP |
774 | } |
775 | ||
87f0e418 | 776 | static void service_dump(Unit *u, FILE *f, const char *prefix) { |
f2e18ef1 YW |
777 | char buf_restart[FORMAT_TIMESPAN_MAX], buf_start[FORMAT_TIMESPAN_MAX], buf_stop[FORMAT_TIMESPAN_MAX]; |
778 | char buf_runtime[FORMAT_TIMESPAN_MAX], buf_watchdog[FORMAT_TIMESPAN_MAX]; | |
5cb5a6ff | 779 | ServiceExecCommand c; |
87f0e418 | 780 | Service *s = SERVICE(u); |
47be870b | 781 | const char *prefix2; |
5cb5a6ff LP |
782 | |
783 | assert(s); | |
784 | ||
4c940960 | 785 | prefix = strempty(prefix); |
63c372cb | 786 | prefix2 = strjoina(prefix, "\t"); |
44d8db9e | 787 | |
5cb5a6ff | 788 | fprintf(f, |
81a2b7ce | 789 | "%sService State: %s\n" |
f42806df LP |
790 | "%sResult: %s\n" |
791 | "%sReload Result: %s\n" | |
81a2b7ce | 792 | "%sPermissionsStartOnly: %s\n" |
8e274523 | 793 | "%sRootDirectoryStartOnly: %s\n" |
02ee865a | 794 | "%sRemainAfterExit: %s\n" |
3185a36b | 795 | "%sGuessMainPID: %s\n" |
c952c6ec | 796 | "%sType: %s\n" |
2cf3143a | 797 | "%sRestart: %s\n" |
308d72dc LP |
798 | "%sNotifyAccess: %s\n" |
799 | "%sNotifyState: %s\n", | |
81a2b7ce | 800 | prefix, service_state_to_string(s->state), |
f42806df LP |
801 | prefix, service_result_to_string(s->result), |
802 | prefix, service_result_to_string(s->reload_result), | |
81a2b7ce | 803 | prefix, yes_no(s->permissions_start_only), |
8e274523 | 804 | prefix, yes_no(s->root_directory_start_only), |
02ee865a | 805 | prefix, yes_no(s->remain_after_exit), |
3185a36b | 806 | prefix, yes_no(s->guess_main_pid), |
c952c6ec | 807 | prefix, service_type_to_string(s->type), |
2cf3143a | 808 | prefix, service_restart_to_string(s->restart), |
308d72dc LP |
809 | prefix, notify_access_to_string(s->notify_access), |
810 | prefix, notify_state_to_string(s->notify_state)); | |
5cb5a6ff | 811 | |
70123e68 LP |
812 | if (s->control_pid > 0) |
813 | fprintf(f, | |
ccd06097 ZJS |
814 | "%sControl PID: "PID_FMT"\n", |
815 | prefix, s->control_pid); | |
70123e68 LP |
816 | |
817 | if (s->main_pid > 0) | |
818 | fprintf(f, | |
ccd06097 | 819 | "%sMain PID: "PID_FMT"\n" |
6dfa5494 LP |
820 | "%sMain PID Known: %s\n" |
821 | "%sMain PID Alien: %s\n", | |
ccd06097 | 822 | prefix, s->main_pid, |
6dfa5494 LP |
823 | prefix, yes_no(s->main_pid_known), |
824 | prefix, yes_no(s->main_pid_alien)); | |
70123e68 | 825 | |
034c6ed7 LP |
826 | if (s->pid_file) |
827 | fprintf(f, | |
828 | "%sPIDFile: %s\n", | |
829 | prefix, s->pid_file); | |
830 | ||
05e343b7 LP |
831 | if (s->bus_name) |
832 | fprintf(f, | |
833 | "%sBusName: %s\n" | |
834 | "%sBus Name Good: %s\n", | |
835 | prefix, s->bus_name, | |
836 | prefix, yes_no(s->bus_name_good)); | |
837 | ||
9dfb64f8 ZJS |
838 | if (UNIT_ISSET(s->accept_socket)) |
839 | fprintf(f, | |
840 | "%sAccept Socket: %s\n", | |
841 | prefix, UNIT_DEREF(s->accept_socket)->id); | |
842 | ||
c9d41699 YW |
843 | fprintf(f, |
844 | "%sRestartSec: %s\n" | |
845 | "%sTimeoutStartSec: %s\n" | |
846 | "%sTimeoutStopSec: %s\n" | |
847 | "%sRuntimeMaxSec: %s\n" | |
848 | "%sWatchdogSec: %s\n", | |
849 | prefix, format_timespan(buf_restart, sizeof(buf_restart), s->restart_usec, USEC_PER_SEC), | |
850 | prefix, format_timespan(buf_start, sizeof(buf_start), s->timeout_start_usec, USEC_PER_SEC), | |
851 | prefix, format_timespan(buf_stop, sizeof(buf_stop), s->timeout_stop_usec, USEC_PER_SEC), | |
852 | prefix, format_timespan(buf_runtime, sizeof(buf_runtime), s->runtime_max_usec, USEC_PER_SEC), | |
853 | prefix, format_timespan(buf_watchdog, sizeof(buf_watchdog), s->watchdog_usec, USEC_PER_SEC)); | |
854 | ||
4819ff03 | 855 | kill_context_dump(&s->kill_context, f, prefix); |
5cb5a6ff LP |
856 | exec_context_dump(&s->exec_context, f, prefix); |
857 | ||
e537352b | 858 | for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) { |
5cb5a6ff | 859 | |
44d8db9e LP |
860 | if (!s->exec_command[c]) |
861 | continue; | |
862 | ||
40d50879 | 863 | fprintf(f, "%s-> %s:\n", |
94f04347 | 864 | prefix, service_exec_command_to_string(c)); |
44d8db9e LP |
865 | |
866 | exec_command_dump_list(s->exec_command[c], f, prefix2); | |
5cb5a6ff | 867 | } |
44d8db9e | 868 | |
8c47c732 LP |
869 | if (s->status_text) |
870 | fprintf(f, "%sStatus Text: %s\n", | |
871 | prefix, s->status_text); | |
a354329f | 872 | |
ece174c5 | 873 | if (s->n_fd_store_max > 0) |
a354329f LP |
874 | fprintf(f, |
875 | "%sFile Descriptor Store Max: %u\n" | |
876 | "%sFile Descriptor Store Current: %u\n", | |
877 | prefix, s->n_fd_store_max, | |
878 | prefix, s->n_fd_store); | |
18f573aa LP |
879 | |
880 | cgroup_context_dump(&s->cgroup_context, f, prefix); | |
5cb5a6ff LP |
881 | } |
882 | ||
db256aab LP |
883 | static int service_is_suitable_main_pid(Service *s, pid_t pid, int prio) { |
884 | Unit *owner; | |
885 | ||
886 | assert(s); | |
887 | assert(pid_is_valid(pid)); | |
888 | ||
889 | /* Checks whether the specified PID is suitable as main PID for this service. returns negative if not, 0 if the | |
890 | * PID is questionnable but should be accepted if the source of configuration is trusted. > 0 if the PID is | |
891 | * good */ | |
892 | ||
893 | if (pid == getpid_cached() || pid == 1) { | |
894 | log_unit_full(UNIT(s), prio, 0, "New main PID "PID_FMT" is the manager, refusing.", pid); | |
895 | return -EPERM; | |
896 | } | |
897 | ||
898 | if (pid == s->control_pid) { | |
899 | log_unit_full(UNIT(s), prio, 0, "New main PID "PID_FMT" is the control process, refusing.", pid); | |
900 | return -EPERM; | |
901 | } | |
902 | ||
903 | if (!pid_is_alive(pid)) { | |
904 | log_unit_full(UNIT(s), prio, 0, "New main PID "PID_FMT" does not exist or is a zombie.", pid); | |
905 | return -ESRCH; | |
906 | } | |
907 | ||
908 | owner = manager_get_unit_by_pid(UNIT(s)->manager, pid); | |
909 | if (owner == UNIT(s)) { | |
910 | log_unit_debug(UNIT(s), "New main PID "PID_FMT" belongs to service, we are happy.", pid); | |
911 | return 1; /* Yay, it's definitely a good PID */ | |
912 | } | |
913 | ||
914 | return 0; /* Hmm it's a suspicious PID, let's accept it if configuration source is trusted */ | |
915 | } | |
916 | ||
c5419d42 | 917 | static int service_load_pid_file(Service *s, bool may_warn) { |
db256aab | 918 | char procfs[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; |
73969ab6 | 919 | bool questionable_pid_file = false; |
7fd1b19b | 920 | _cleanup_free_ char *k = NULL; |
db256aab LP |
921 | _cleanup_close_ int fd = -1; |
922 | int r, prio; | |
5925dd3c | 923 | pid_t pid; |
034c6ed7 LP |
924 | |
925 | assert(s); | |
926 | ||
034c6ed7 | 927 | if (!s->pid_file) |
13230d5d | 928 | return -ENOENT; |
034c6ed7 | 929 | |
db256aab LP |
930 | prio = may_warn ? LOG_INFO : LOG_DEBUG; |
931 | ||
932 | fd = chase_symlinks(s->pid_file, NULL, CHASE_OPEN|CHASE_SAFE, NULL); | |
73969ab6 LP |
933 | if (fd == -EPERM) { |
934 | log_unit_full(UNIT(s), LOG_DEBUG, fd, "Permission denied while opening PID file or potentially unsafe symlink chain, will now retry with relaxed checks: %s", s->pid_file); | |
935 | ||
936 | questionable_pid_file = true; | |
937 | ||
938 | fd = chase_symlinks(s->pid_file, NULL, CHASE_OPEN, NULL); | |
939 | } | |
db256aab LP |
940 | if (fd < 0) |
941 | return log_unit_full(UNIT(s), prio, fd, "Can't open PID file %s (yet?) after %s: %m", s->pid_file, service_state_to_string(s->state)); | |
942 | ||
943 | /* Let's read the PID file now that we chased it down. But we need to convert the O_PATH fd chase_symlinks() returned us into a proper fd first. */ | |
944 | xsprintf(procfs, "/proc/self/fd/%i", fd); | |
945 | r = read_one_line_file(procfs, &k); | |
946 | if (r < 0) | |
947 | return log_unit_error_errno(UNIT(s), r, "Can't convert PID files %s O_PATH file descriptor to proper file descriptor: %m", s->pid_file); | |
034c6ed7 | 948 | |
5925dd3c | 949 | r = parse_pid(k, &pid); |
db256aab LP |
950 | if (r < 0) |
951 | return log_unit_full(UNIT(s), prio, r, "Failed to parse PID from file %s: %m", s->pid_file); | |
952 | ||
953 | if (s->main_pid_known && pid == s->main_pid) | |
954 | return 0; | |
955 | ||
956 | r = service_is_suitable_main_pid(s, pid, prio); | |
957 | if (r < 0) | |
5925dd3c | 958 | return r; |
db256aab LP |
959 | if (r == 0) { |
960 | struct stat st; | |
406eaf93 | 961 | |
73969ab6 LP |
962 | if (questionable_pid_file) { |
963 | log_unit_error(UNIT(s), "Refusing to accept PID outside of service control group, acquired through unsafe symlink chain: %s", s->pid_file); | |
964 | return -EPERM; | |
965 | } | |
966 | ||
db256aab LP |
967 | /* Hmm, it's not clear if the new main PID is safe. Let's allow this if the PID file is owned by root */ |
968 | ||
969 | if (fstat(fd, &st) < 0) | |
970 | return log_unit_error_errno(UNIT(s), errno, "Failed to fstat() PID file O_PATH fd: %m"); | |
971 | ||
972 | if (st.st_uid != 0) { | |
973 | log_unit_error(UNIT(s), "New main PID "PID_FMT" does not belong to service, and PID file is not owned by root. Refusing.", pid); | |
974 | return -EPERM; | |
975 | } | |
976 | ||
977 | log_unit_debug(UNIT(s), "New main PID "PID_FMT" does not belong to service, but we'll accept it since PID file is owned by root.", pid); | |
e10c9985 YS |
978 | } |
979 | ||
db01f8b3 | 980 | if (s->main_pid_known) { |
f2341e0a | 981 | log_unit_debug(UNIT(s), "Main PID changing: "PID_FMT" -> "PID_FMT, s->main_pid, pid); |
8bb2d17d | 982 | |
db01f8b3 MS |
983 | service_unwatch_main_pid(s); |
984 | s->main_pid_known = false; | |
3a111838 | 985 | } else |
f2341e0a | 986 | log_unit_debug(UNIT(s), "Main PID loaded: "PID_FMT, pid); |
db01f8b3 | 987 | |
117dcc57 ZJS |
988 | r = service_set_main_pid(s, pid); |
989 | if (r < 0) | |
16f6025e LP |
990 | return r; |
991 | ||
117dcc57 | 992 | r = unit_watch_pid(UNIT(s), pid); |
e8b509d3 LP |
993 | if (r < 0) /* FIXME: we need to do something here */ |
994 | return log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" for service: %m", pid); | |
034c6ed7 | 995 | |
db256aab | 996 | return 1; |
034c6ed7 LP |
997 | } |
998 | ||
783e05d6 | 999 | static void service_search_main_pid(Service *s) { |
efdb0237 | 1000 | pid_t pid = 0; |
4fbf50b3 LP |
1001 | int r; |
1002 | ||
1003 | assert(s); | |
1004 | ||
3185a36b LP |
1005 | /* If we know it anyway, don't ever fallback to unreliable |
1006 | * heuristics */ | |
4fbf50b3 | 1007 | if (s->main_pid_known) |
783e05d6 | 1008 | return; |
4fbf50b3 | 1009 | |
3185a36b | 1010 | if (!s->guess_main_pid) |
783e05d6 | 1011 | return; |
3185a36b | 1012 | |
4fbf50b3 LP |
1013 | assert(s->main_pid <= 0); |
1014 | ||
783e05d6 ZJS |
1015 | if (unit_search_main_pid(UNIT(s), &pid) < 0) |
1016 | return; | |
4fbf50b3 | 1017 | |
f2341e0a | 1018 | log_unit_debug(UNIT(s), "Main PID guessed: "PID_FMT, pid); |
783e05d6 ZJS |
1019 | if (service_set_main_pid(s, pid) < 0) |
1020 | return; | |
4fbf50b3 | 1021 | |
117dcc57 | 1022 | r = unit_watch_pid(UNIT(s), pid); |
783e05d6 | 1023 | if (r < 0) |
4fbf50b3 | 1024 | /* FIXME: we need to do something here */ |
f2341e0a | 1025 | log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" from: %m", pid); |
4fbf50b3 LP |
1026 | } |
1027 | ||
034c6ed7 LP |
1028 | static void service_set_state(Service *s, ServiceState state) { |
1029 | ServiceState old_state; | |
e056b01d | 1030 | const UnitActiveState *table; |
842129f5 | 1031 | |
5cb5a6ff LP |
1032 | assert(s); |
1033 | ||
e056b01d LP |
1034 | table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
1035 | ||
034c6ed7 | 1036 | old_state = s->state; |
5cb5a6ff | 1037 | s->state = state; |
034c6ed7 | 1038 | |
3a111838 MS |
1039 | service_unwatch_pid_file(s); |
1040 | ||
842129f5 LP |
1041 | if (!IN_SET(state, |
1042 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
36c16a7c | 1043 | SERVICE_RUNNING, |
842129f5 | 1044 | SERVICE_RELOAD, |
57614eb1 | 1045 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
842129f5 LP |
1046 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL, |
1047 | SERVICE_AUTO_RESTART)) | |
718db961 | 1048 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
034c6ed7 | 1049 | |
842129f5 LP |
1050 | if (!IN_SET(state, |
1051 | SERVICE_START, SERVICE_START_POST, | |
1052 | SERVICE_RUNNING, SERVICE_RELOAD, | |
57614eb1 | 1053 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf108e55 | 1054 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
5e94833f | 1055 | service_unwatch_main_pid(s); |
867b3b7d LP |
1056 | s->main_command = NULL; |
1057 | } | |
034c6ed7 | 1058 | |
842129f5 LP |
1059 | if (!IN_SET(state, |
1060 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
1061 | SERVICE_RELOAD, | |
57614eb1 | 1062 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
842129f5 | 1063 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
5e94833f | 1064 | service_unwatch_control_pid(s); |
034c6ed7 | 1065 | s->control_command = NULL; |
a16e1123 | 1066 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; |
e537352b | 1067 | } |
034c6ed7 | 1068 | |
a911bb9a LP |
1069 | if (IN_SET(state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART)) |
1070 | unit_unwatch_all_pids(UNIT(s)); | |
1071 | ||
842129f5 LP |
1072 | if (!IN_SET(state, |
1073 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
1074 | SERVICE_RUNNING, SERVICE_RELOAD, | |
57614eb1 LP |
1075 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
1076 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL) && | |
5cc3985e | 1077 | !(state == SERVICE_DEAD && UNIT(s)->job)) |
4f2d528d LP |
1078 | service_close_socket_fd(s); |
1079 | ||
7596e9e1 | 1080 | if (!IN_SET(state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
a6927d7f MO |
1081 | service_stop_watchdog(s); |
1082 | ||
f6023656 LP |
1083 | /* For the inactive states unit_notify() will trim the cgroup, |
1084 | * but for exit we have to do that ourselves... */ | |
2c289ea8 | 1085 | if (state == SERVICE_EXITED && !MANAGER_IS_RELOADING(UNIT(s)->manager)) |
efdb0237 | 1086 | unit_prune_cgroup(UNIT(s)); |
f6023656 | 1087 | |
e537352b | 1088 | if (old_state != state) |
f2341e0a | 1089 | log_unit_debug(UNIT(s), "Changed %s -> %s", service_state_to_string(old_state), service_state_to_string(state)); |
acbb0225 | 1090 | |
e056b01d | 1091 | unit_notify(UNIT(s), table[old_state], table[state], s->reload_result == SERVICE_SUCCESS); |
034c6ed7 LP |
1092 | } |
1093 | ||
36c16a7c LP |
1094 | static usec_t service_coldplug_timeout(Service *s) { |
1095 | assert(s); | |
1096 | ||
1097 | switch (s->deserialized_state) { | |
1098 | ||
1099 | case SERVICE_START_PRE: | |
1100 | case SERVICE_START: | |
1101 | case SERVICE_START_POST: | |
1102 | case SERVICE_RELOAD: | |
1103 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->timeout_start_usec); | |
1104 | ||
1105 | case SERVICE_RUNNING: | |
1106 | return usec_add(UNIT(s)->active_enter_timestamp.monotonic, s->runtime_max_usec); | |
1107 | ||
1108 | case SERVICE_STOP: | |
1109 | case SERVICE_STOP_SIGABRT: | |
1110 | case SERVICE_STOP_SIGTERM: | |
1111 | case SERVICE_STOP_SIGKILL: | |
1112 | case SERVICE_STOP_POST: | |
1113 | case SERVICE_FINAL_SIGTERM: | |
1114 | case SERVICE_FINAL_SIGKILL: | |
1115 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->timeout_stop_usec); | |
1116 | ||
1117 | case SERVICE_AUTO_RESTART: | |
1118 | return usec_add(UNIT(s)->inactive_enter_timestamp.monotonic, s->restart_usec); | |
1119 | ||
1120 | default: | |
1121 | return USEC_INFINITY; | |
1122 | } | |
1123 | } | |
1124 | ||
be847e82 | 1125 | static int service_coldplug(Unit *u) { |
a16e1123 LP |
1126 | Service *s = SERVICE(u); |
1127 | int r; | |
1128 | ||
1129 | assert(s); | |
1130 | assert(s->state == SERVICE_DEAD); | |
1131 | ||
930d2838 LP |
1132 | if (s->deserialized_state == s->state) |
1133 | return 0; | |
6c12b52e | 1134 | |
36c16a7c LP |
1135 | r = service_arm_timer(s, service_coldplug_timeout(s)); |
1136 | if (r < 0) | |
1137 | return r; | |
a911bb9a | 1138 | |
930d2838 LP |
1139 | if (s->main_pid > 0 && |
1140 | pid_is_unwaited(s->main_pid) && | |
9acac212 | 1141 | (IN_SET(s->deserialized_state, |
930d2838 LP |
1142 | SERVICE_START, SERVICE_START_POST, |
1143 | SERVICE_RUNNING, SERVICE_RELOAD, | |
1144 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, | |
1145 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL))) { | |
1146 | r = unit_watch_pid(UNIT(s), s->main_pid); | |
1147 | if (r < 0) | |
1148 | return r; | |
1149 | } | |
bb242b7b | 1150 | |
930d2838 LP |
1151 | if (s->control_pid > 0 && |
1152 | pid_is_unwaited(s->control_pid) && | |
1153 | IN_SET(s->deserialized_state, | |
1154 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
1155 | SERVICE_RELOAD, | |
1156 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, | |
1157 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { | |
1158 | r = unit_watch_pid(UNIT(s), s->control_pid); | |
1159 | if (r < 0) | |
1160 | return r; | |
a16e1123 | 1161 | } |
92c1622e | 1162 | |
930d2838 LP |
1163 | if (!IN_SET(s->deserialized_state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART)) |
1164 | unit_watch_all_pids(UNIT(s)); | |
1165 | ||
1166 | if (IN_SET(s->deserialized_state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) | |
1167 | service_start_watchdog(s); | |
1168 | ||
e8a565cb | 1169 | if (!IN_SET(s->deserialized_state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART)) { |
29206d46 | 1170 | (void) unit_setup_dynamic_creds(u); |
e8a565cb YW |
1171 | (void) unit_setup_exec_runtime(u); |
1172 | } | |
29206d46 | 1173 | |
3ebcd323 ZJS |
1174 | if (UNIT_ISSET(s->accept_socket)) { |
1175 | Socket* socket = SOCKET(UNIT_DEREF(s->accept_socket)); | |
1176 | ||
1177 | if (socket->max_connections_per_source > 0) { | |
1178 | SocketPeer *peer; | |
1179 | ||
1180 | /* Make a best-effort attempt at bumping the connection count */ | |
1181 | if (socket_acquire_peer(socket, s->socket_fd, &peer) > 0) { | |
1182 | socket_peer_unref(s->peer); | |
1183 | s->peer = peer; | |
1184 | } | |
1185 | } | |
1186 | } | |
1187 | ||
930d2838 | 1188 | service_set_state(s, s->deserialized_state); |
a16e1123 LP |
1189 | return 0; |
1190 | } | |
1191 | ||
4c47affc FB |
1192 | static int service_collect_fds(Service *s, |
1193 | int **fds, | |
1194 | char ***fd_names, | |
1195 | unsigned *n_storage_fds, | |
1196 | unsigned *n_socket_fds) { | |
1197 | ||
8dd4c05b | 1198 | _cleanup_strv_free_ char **rfd_names = NULL; |
a354329f | 1199 | _cleanup_free_ int *rfds = NULL; |
4c47affc FB |
1200 | unsigned rn_socket_fds = 0, rn_storage_fds = 0; |
1201 | int r; | |
44d8db9e LP |
1202 | |
1203 | assert(s); | |
1204 | assert(fds); | |
8dd4c05b | 1205 | assert(fd_names); |
9b141911 | 1206 | assert(n_socket_fds); |
44d8db9e | 1207 | |
8dd4c05b | 1208 | if (s->socket_fd >= 0) { |
6cf6bbc2 | 1209 | |
8dd4c05b | 1210 | /* Pass the per-connection socket */ |
57020a3a | 1211 | |
8dd4c05b LP |
1212 | rfds = new(int, 1); |
1213 | if (!rfds) | |
1214 | return -ENOMEM; | |
1215 | rfds[0] = s->socket_fd; | |
57020a3a | 1216 | |
8dd4c05b LP |
1217 | rfd_names = strv_new("connection", NULL); |
1218 | if (!rfd_names) | |
1219 | return -ENOMEM; | |
44d8db9e | 1220 | |
4c47affc | 1221 | rn_socket_fds = 1; |
8dd4c05b LP |
1222 | } else { |
1223 | Iterator i; | |
eef85c4a | 1224 | void *v; |
8dd4c05b | 1225 | Unit *u; |
44d8db9e | 1226 | |
8dd4c05b | 1227 | /* Pass all our configured sockets for singleton services */ |
44d8db9e | 1228 | |
eef85c4a | 1229 | HASHMAP_FOREACH_KEY(v, u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) { |
8dd4c05b LP |
1230 | _cleanup_free_ int *cfds = NULL; |
1231 | Socket *sock; | |
1232 | int cn_fds; | |
44d8db9e | 1233 | |
8dd4c05b LP |
1234 | if (u->type != UNIT_SOCKET) |
1235 | continue; | |
44d8db9e | 1236 | |
8dd4c05b | 1237 | sock = SOCKET(u); |
a354329f | 1238 | |
8dd4c05b LP |
1239 | cn_fds = socket_collect_fds(sock, &cfds); |
1240 | if (cn_fds < 0) | |
1241 | return cn_fds; | |
44d8db9e | 1242 | |
8dd4c05b LP |
1243 | if (cn_fds <= 0) |
1244 | continue; | |
79c7626d | 1245 | |
8dd4c05b LP |
1246 | if (!rfds) { |
1247 | rfds = cfds; | |
4c47affc | 1248 | rn_socket_fds = cn_fds; |
8dd4c05b LP |
1249 | |
1250 | cfds = NULL; | |
1251 | } else { | |
1252 | int *t; | |
1253 | ||
4c47affc | 1254 | t = realloc(rfds, (rn_socket_fds + cn_fds) * sizeof(int)); |
8dd4c05b LP |
1255 | if (!t) |
1256 | return -ENOMEM; | |
1257 | ||
4c47affc | 1258 | memcpy(t + rn_socket_fds, cfds, cn_fds * sizeof(int)); |
8dd4c05b LP |
1259 | |
1260 | rfds = t; | |
4c47affc | 1261 | rn_socket_fds += cn_fds; |
8dd4c05b LP |
1262 | } |
1263 | ||
1264 | r = strv_extend_n(&rfd_names, socket_fdname(sock), cn_fds); | |
1265 | if (r < 0) | |
1266 | return r; | |
44d8db9e LP |
1267 | } |
1268 | } | |
1269 | ||
a354329f LP |
1270 | if (s->n_fd_store > 0) { |
1271 | ServiceFDStore *fs; | |
4c47affc | 1272 | unsigned n_fds; |
8dd4c05b | 1273 | char **nl; |
a354329f LP |
1274 | int *t; |
1275 | ||
4c47affc | 1276 | t = realloc(rfds, (rn_socket_fds + s->n_fd_store) * sizeof(int)); |
a354329f LP |
1277 | if (!t) |
1278 | return -ENOMEM; | |
1279 | ||
1280 | rfds = t; | |
8dd4c05b | 1281 | |
4c47affc | 1282 | nl = realloc(rfd_names, (rn_socket_fds + s->n_fd_store + 1) * sizeof(char*)); |
8dd4c05b LP |
1283 | if (!nl) |
1284 | return -ENOMEM; | |
1285 | ||
1286 | rfd_names = nl; | |
4c47affc | 1287 | n_fds = rn_socket_fds; |
8dd4c05b LP |
1288 | |
1289 | LIST_FOREACH(fd_store, fs, s->fd_store) { | |
4c47affc FB |
1290 | rfds[n_fds] = fs->fd; |
1291 | rfd_names[n_fds] = strdup(strempty(fs->fdname)); | |
1292 | if (!rfd_names[n_fds]) | |
8dd4c05b LP |
1293 | return -ENOMEM; |
1294 | ||
4c47affc FB |
1295 | rn_storage_fds++; |
1296 | n_fds++; | |
8dd4c05b LP |
1297 | } |
1298 | ||
4c47affc | 1299 | rfd_names[n_fds] = NULL; |
a354329f LP |
1300 | } |
1301 | ||
44d8db9e | 1302 | *fds = rfds; |
8dd4c05b | 1303 | *fd_names = rfd_names; |
9b141911 | 1304 | *n_socket_fds = rn_socket_fds; |
4c47affc | 1305 | *n_storage_fds = rn_storage_fds; |
3e33402a | 1306 | |
a354329f | 1307 | rfds = NULL; |
8dd4c05b | 1308 | rfd_names = NULL; |
79c7626d | 1309 | |
4c47affc | 1310 | return 0; |
44d8db9e LP |
1311 | } |
1312 | ||
6375bd20 JW |
1313 | static bool service_exec_needs_notify_socket(Service *s, ExecFlags flags) { |
1314 | assert(s); | |
1315 | ||
1316 | /* Notifications are accepted depending on the process and | |
1317 | * the access setting of the service: | |
1318 | * process: \ access: NONE MAIN EXEC ALL | |
1319 | * main no yes yes yes | |
1320 | * control no no yes yes | |
1321 | * other (forked) no no no yes */ | |
1322 | ||
1323 | if (flags & EXEC_IS_CONTROL) | |
1324 | /* A control process */ | |
1325 | return IN_SET(s->notify_access, NOTIFY_EXEC, NOTIFY_ALL); | |
1326 | ||
1327 | /* We only spawn main processes and control processes, so any | |
1328 | * process that is not a control process is a main process */ | |
1329 | return s->notify_access != NOTIFY_NONE; | |
1330 | } | |
1331 | ||
81a2b7ce LP |
1332 | static int service_spawn( |
1333 | Service *s, | |
1334 | ExecCommand *c, | |
21b2ce39 | 1335 | usec_t timeout, |
c39f1ce2 | 1336 | ExecFlags flags, |
81a2b7ce LP |
1337 | pid_t *_pid) { |
1338 | ||
9fa95f85 | 1339 | ExecParameters exec_params = { |
c39f1ce2 LP |
1340 | .flags = flags, |
1341 | .stdin_fd = -1, | |
1342 | .stdout_fd = -1, | |
1343 | .stderr_fd = -1, | |
9fa95f85 | 1344 | }; |
3c7416b6 LP |
1345 | _cleanup_strv_free_ char **final_env = NULL, **our_env = NULL, **fd_names = NULL; |
1346 | unsigned n_storage_fds = 0, n_socket_fds = 0, n_env = 0; | |
1347 | _cleanup_free_ int *fds = NULL; | |
1348 | pid_t pid; | |
8dd4c05b LP |
1349 | int r; |
1350 | ||
034c6ed7 LP |
1351 | assert(s); |
1352 | assert(c); | |
1353 | assert(_pid); | |
1354 | ||
3c7416b6 LP |
1355 | r = unit_prepare_exec(UNIT(s)); |
1356 | if (r < 0) | |
1357 | return r; | |
1358 | ||
9c1a61ad LP |
1359 | if (flags & EXEC_IS_CONTROL) { |
1360 | /* If this is a control process, mask the permissions/chroot application if this is requested. */ | |
1361 | if (s->permissions_start_only) | |
1703fa41 | 1362 | exec_params.flags &= ~EXEC_APPLY_SANDBOXING; |
9c1a61ad LP |
1363 | if (s->root_directory_start_only) |
1364 | exec_params.flags &= ~EXEC_APPLY_CHROOT; | |
1365 | } | |
1366 | ||
c39f1ce2 | 1367 | if ((flags & EXEC_PASS_FDS) || |
6cf6bbc2 LP |
1368 | s->exec_context.std_input == EXEC_INPUT_SOCKET || |
1369 | s->exec_context.std_output == EXEC_OUTPUT_SOCKET || | |
1370 | s->exec_context.std_error == EXEC_OUTPUT_SOCKET) { | |
1371 | ||
4c47affc | 1372 | r = service_collect_fds(s, &fds, &fd_names, &n_storage_fds, &n_socket_fds); |
8dd4c05b | 1373 | if (r < 0) |
36c16a7c | 1374 | return r; |
6cf6bbc2 | 1375 | |
4c47affc | 1376 | log_unit_debug(UNIT(s), "Passing %i fds to service", n_storage_fds + n_socket_fds); |
4f2d528d | 1377 | } |
44d8db9e | 1378 | |
36c16a7c LP |
1379 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), timeout)); |
1380 | if (r < 0) | |
1381 | return r; | |
034c6ed7 | 1382 | |
136dc4c4 | 1383 | our_env = new0(char*, 9); |
36c16a7c LP |
1384 | if (!our_env) |
1385 | return -ENOMEM; | |
c952c6ec | 1386 | |
6375bd20 | 1387 | if (service_exec_needs_notify_socket(s, flags)) |
36c16a7c LP |
1388 | if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) |
1389 | return -ENOMEM; | |
c952c6ec | 1390 | |
2105e76a | 1391 | if (s->main_pid > 0) |
36c16a7c LP |
1392 | if (asprintf(our_env + n_env++, "MAINPID="PID_FMT, s->main_pid) < 0) |
1393 | return -ENOMEM; | |
2105e76a | 1394 | |
c39f1ce2 | 1395 | if (MANAGER_IS_USER(UNIT(s)->manager)) |
df0ff127 | 1396 | if (asprintf(our_env + n_env++, "MANAGERPID="PID_FMT, getpid_cached()) < 0) |
36c16a7c | 1397 | return -ENOMEM; |
97ae63e2 | 1398 | |
8dd4c05b | 1399 | if (s->socket_fd >= 0) { |
3b1c5241 SL |
1400 | union sockaddr_union sa; |
1401 | socklen_t salen = sizeof(sa); | |
1402 | ||
f56e7bfe LP |
1403 | /* If this is a per-connection service instance, let's set $REMOTE_ADDR and $REMOTE_PORT to something |
1404 | * useful. Note that we do this only when we are still connected at this point in time, which we might | |
1405 | * very well not be. Hence we ignore all errors when retrieving peer information (as that might result | |
1406 | * in ENOTCONN), and just use whate we can use. */ | |
f2dbd059 | 1407 | |
f56e7bfe LP |
1408 | if (getpeername(s->socket_fd, &sa.sa, &salen) >= 0 && |
1409 | IN_SET(sa.sa.sa_family, AF_INET, AF_INET6, AF_VSOCK)) { | |
3b1c5241 | 1410 | |
3b1c5241 SL |
1411 | _cleanup_free_ char *addr = NULL; |
1412 | char *t; | |
882ac6e7 | 1413 | unsigned port; |
3b1c5241 SL |
1414 | |
1415 | r = sockaddr_pretty(&sa.sa, salen, true, false, &addr); | |
1416 | if (r < 0) | |
36c16a7c | 1417 | return r; |
3b1c5241 SL |
1418 | |
1419 | t = strappend("REMOTE_ADDR=", addr); | |
36c16a7c LP |
1420 | if (!t) |
1421 | return -ENOMEM; | |
3b1c5241 SL |
1422 | our_env[n_env++] = t; |
1423 | ||
882ac6e7 SH |
1424 | r = sockaddr_port(&sa.sa, &port); |
1425 | if (r < 0) | |
1426 | return r; | |
3b1c5241 | 1427 | |
36c16a7c LP |
1428 | if (asprintf(&t, "REMOTE_PORT=%u", port) < 0) |
1429 | return -ENOMEM; | |
3b1c5241 SL |
1430 | our_env[n_env++] = t; |
1431 | } | |
1432 | } | |
1433 | ||
136dc4c4 LP |
1434 | if (flags & EXEC_SETENV_RESULT) { |
1435 | if (asprintf(our_env + n_env++, "SERVICE_RESULT=%s", service_result_to_string(s->result)) < 0) | |
1436 | return -ENOMEM; | |
1437 | ||
1438 | if (s->main_exec_status.pid > 0 && | |
1439 | dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) { | |
1440 | if (asprintf(our_env + n_env++, "EXIT_CODE=%s", sigchld_code_to_string(s->main_exec_status.code)) < 0) | |
1441 | return -ENOMEM; | |
1442 | ||
1443 | if (s->main_exec_status.code == CLD_EXITED) | |
1444 | r = asprintf(our_env + n_env++, "EXIT_STATUS=%i", s->main_exec_status.status); | |
1445 | else | |
1446 | r = asprintf(our_env + n_env++, "EXIT_STATUS=%s", signal_to_string(s->main_exec_status.status)); | |
1447 | if (r < 0) | |
1448 | return -ENOMEM; | |
1449 | } | |
1450 | } | |
1451 | ||
19bbdd98 | 1452 | manager_set_exec_params(UNIT(s)->manager, &exec_params); |
f0d47797 | 1453 | unit_set_exec_params(UNIT(s), &exec_params); |
3536f49e YW |
1454 | |
1455 | final_env = strv_env_merge(2, exec_params.environment, our_env, NULL); | |
36c16a7c LP |
1456 | if (!final_env) |
1457 | return -ENOMEM; | |
c952c6ec | 1458 | |
5bf7569c LP |
1459 | /* System services should get a new keyring by default. */ |
1460 | SET_FLAG(exec_params.flags, EXEC_NEW_KEYRING, MANAGER_IS_SYSTEM(UNIT(s)->manager)); | |
ac647978 LP |
1461 | |
1462 | /* System D-Bus needs nss-systemd disabled, so that we don't deadlock */ | |
1463 | SET_FLAG(exec_params.flags, EXEC_NSS_BYPASS_BUS, | |
1464 | MANAGER_IS_SYSTEM(UNIT(s)->manager) && unit_has_name(UNIT(s), SPECIAL_DBUS_SERVICE)); | |
4ad49000 | 1465 | |
5125e762 | 1466 | exec_params.argv = c->argv; |
c39f1ce2 | 1467 | exec_params.environment = final_env; |
9fa95f85 | 1468 | exec_params.fds = fds; |
8dd4c05b | 1469 | exec_params.fd_names = fd_names; |
4c47affc | 1470 | exec_params.n_storage_fds = n_storage_fds; |
9b141911 | 1471 | exec_params.n_socket_fds = n_socket_fds; |
9fa95f85 | 1472 | exec_params.watchdog_usec = s->watchdog_usec; |
a34ceba6 | 1473 | exec_params.selinux_context_net = s->socket_fd_selinux_context_net; |
9fa95f85 DM |
1474 | if (s->type == SERVICE_IDLE) |
1475 | exec_params.idle_pipe = UNIT(s)->manager->idle_pipe; | |
a34ceba6 LP |
1476 | exec_params.stdin_fd = s->stdin_fd; |
1477 | exec_params.stdout_fd = s->stdout_fd; | |
1478 | exec_params.stderr_fd = s->stderr_fd; | |
9fa95f85 | 1479 | |
f2341e0a LP |
1480 | r = exec_spawn(UNIT(s), |
1481 | c, | |
9e2f7c11 | 1482 | &s->exec_context, |
9fa95f85 | 1483 | &exec_params, |
613b411c | 1484 | s->exec_runtime, |
29206d46 | 1485 | &s->dynamic_creds, |
9e2f7c11 | 1486 | &pid); |
9e2f7c11 | 1487 | if (r < 0) |
36c16a7c | 1488 | return r; |
034c6ed7 | 1489 | |
117dcc57 | 1490 | r = unit_watch_pid(UNIT(s), pid); |
e8b509d3 | 1491 | if (r < 0) /* FIXME: we need to do something here */ |
36c16a7c | 1492 | return r; |
034c6ed7 LP |
1493 | |
1494 | *_pid = pid; | |
1495 | ||
5cb5a6ff | 1496 | return 0; |
034c6ed7 LP |
1497 | } |
1498 | ||
80876c20 LP |
1499 | static int main_pid_good(Service *s) { |
1500 | assert(s); | |
1501 | ||
51894d70 | 1502 | /* Returns 0 if the pid is dead, > 0 if it is good, < 0 if we don't know */ |
80876c20 | 1503 | |
fc08079e | 1504 | /* If we know the pid file, then let's just check if it is |
80876c20 | 1505 | * still valid */ |
6dfa5494 LP |
1506 | if (s->main_pid_known) { |
1507 | ||
1508 | /* If it's an alien child let's check if it is still | |
1509 | * alive ... */ | |
62220cf7 | 1510 | if (s->main_pid_alien && s->main_pid > 0) |
9f5650ae | 1511 | return pid_is_alive(s->main_pid); |
6dfa5494 LP |
1512 | |
1513 | /* .. otherwise assume we'll get a SIGCHLD for it, | |
1514 | * which we really should wait for to collect exit | |
1515 | * status and code */ | |
80876c20 | 1516 | return s->main_pid > 0; |
6dfa5494 | 1517 | } |
80876c20 LP |
1518 | |
1519 | /* We don't know the pid */ | |
1520 | return -EAGAIN; | |
1521 | } | |
1522 | ||
019be286 | 1523 | static int control_pid_good(Service *s) { |
80876c20 LP |
1524 | assert(s); |
1525 | ||
07697d7e LP |
1526 | /* Returns 0 if the control PID is dead, > 0 if it is good. We never actually return < 0 here, but in order to |
1527 | * make this function as similar as possible to main_pid_good() and cgroup_good(), we pretend that < 0 also | |
1528 | * means: we can't figure it out. */ | |
1529 | ||
80876c20 LP |
1530 | return s->control_pid > 0; |
1531 | } | |
1532 | ||
1533 | static int cgroup_good(Service *s) { | |
1534 | int r; | |
1535 | ||
1536 | assert(s); | |
1537 | ||
07697d7e LP |
1538 | /* Returns 0 if the cgroup is empty or doesn't exist, > 0 if it is exists and is populated, < 0 if we can't |
1539 | * figure it out */ | |
1540 | ||
4ad49000 LP |
1541 | if (!UNIT(s)->cgroup_path) |
1542 | return 0; | |
1543 | ||
6f883237 | 1544 | r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, UNIT(s)->cgroup_path); |
117dcc57 | 1545 | if (r < 0) |
80876c20 LP |
1546 | return r; |
1547 | ||
b13ddbbc | 1548 | return r == 0; |
80876c20 LP |
1549 | } |
1550 | ||
a509f0e6 LP |
1551 | static bool service_shall_restart(Service *s) { |
1552 | assert(s); | |
1553 | ||
1554 | /* Don't restart after manual stops */ | |
1555 | if (s->forbid_restart) | |
1556 | return false; | |
1557 | ||
1558 | /* Never restart if this is configured as special exception */ | |
1559 | if (exit_status_set_test(&s->restart_prevent_status, s->main_exec_status.code, s->main_exec_status.status)) | |
1560 | return false; | |
1561 | ||
1562 | /* Restart if the exit code/status are configured as restart triggers */ | |
1563 | if (exit_status_set_test(&s->restart_force_status, s->main_exec_status.code, s->main_exec_status.status)) | |
1564 | return true; | |
1565 | ||
1566 | switch (s->restart) { | |
1567 | ||
1568 | case SERVICE_RESTART_NO: | |
1569 | return false; | |
1570 | ||
1571 | case SERVICE_RESTART_ALWAYS: | |
1572 | return true; | |
1573 | ||
1574 | case SERVICE_RESTART_ON_SUCCESS: | |
1575 | return s->result == SERVICE_SUCCESS; | |
1576 | ||
1577 | case SERVICE_RESTART_ON_FAILURE: | |
1578 | return s->result != SERVICE_SUCCESS; | |
1579 | ||
1580 | case SERVICE_RESTART_ON_ABNORMAL: | |
1581 | return !IN_SET(s->result, SERVICE_SUCCESS, SERVICE_FAILURE_EXIT_CODE); | |
1582 | ||
1583 | case SERVICE_RESTART_ON_WATCHDOG: | |
1584 | return s->result == SERVICE_FAILURE_WATCHDOG; | |
1585 | ||
1586 | case SERVICE_RESTART_ON_ABORT: | |
1587 | return IN_SET(s->result, SERVICE_FAILURE_SIGNAL, SERVICE_FAILURE_CORE_DUMP); | |
1588 | ||
1589 | default: | |
1590 | assert_not_reached("unknown restart setting"); | |
1591 | } | |
1592 | } | |
1593 | ||
deb4e708 MK |
1594 | static bool service_will_restart(Unit *u) { |
1595 | Service *s = SERVICE(u); | |
1596 | ||
53f47dfc YW |
1597 | assert(s); |
1598 | ||
deb4e708 MK |
1599 | if (s->will_auto_restart) |
1600 | return true; | |
53f47dfc YW |
1601 | if (s->state == SERVICE_AUTO_RESTART) |
1602 | return true; | |
1603 | if (!UNIT(s)->job) | |
1604 | return false; | |
1605 | if (UNIT(s)->job->type == JOB_START) | |
1606 | return true; | |
1607 | return false; | |
1608 | } | |
1609 | ||
f42806df | 1610 | static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) { |
034c6ed7 | 1611 | int r; |
0f52f8e5 | 1612 | |
034c6ed7 LP |
1613 | assert(s); |
1614 | ||
0f52f8e5 LP |
1615 | /* If there's a stop job queued before we enter the DEAD state, we shouldn't act on Restart=, in order to not |
1616 | * undo what has already been enqueued. */ | |
1617 | if (unit_stop_pending(UNIT(s))) | |
1618 | allow_restart = false; | |
1619 | ||
a0fef983 | 1620 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1621 | s->result = f; |
034c6ed7 | 1622 | |
ed77d407 LP |
1623 | if (s->result != SERVICE_SUCCESS) |
1624 | log_unit_warning(UNIT(s), "Failed with result '%s'.", service_result_to_string(s->result)); | |
1625 | ||
deb4e708 MK |
1626 | if (allow_restart && service_shall_restart(s)) |
1627 | s->will_auto_restart = true; | |
1628 | ||
7eb2a8a1 LP |
1629 | /* Make sure service_release_resources() doesn't destroy our FD store, while we are changing through |
1630 | * SERVICE_FAILED/SERVICE_DEAD before entering into SERVICE_AUTO_RESTART. */ | |
1631 | s->n_keep_fd_store ++; | |
1632 | ||
0c7f15b3 MS |
1633 | service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD); |
1634 | ||
deb4e708 MK |
1635 | if (s->will_auto_restart) { |
1636 | s->will_auto_restart = false; | |
034c6ed7 | 1637 | |
36c16a7c | 1638 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->restart_usec)); |
7eb2a8a1 LP |
1639 | if (r < 0) { |
1640 | s->n_keep_fd_store--; | |
034c6ed7 | 1641 | goto fail; |
7eb2a8a1 | 1642 | } |
034c6ed7 LP |
1643 | |
1644 | service_set_state(s, SERVICE_AUTO_RESTART); | |
7a0019d3 LP |
1645 | } else |
1646 | /* If we shan't restart, then flush out the restart counter. But don't do that immediately, so that the | |
1647 | * user can still introspect the counter. Do so on the next start. */ | |
1648 | s->flush_n_restarts = true; | |
034c6ed7 | 1649 | |
7eb2a8a1 LP |
1650 | /* The new state is in effect, let's decrease the fd store ref counter again. Let's also readd us to the GC |
1651 | * queue, so that the fd store is possibly gc'ed again */ | |
1652 | s->n_keep_fd_store--; | |
1653 | unit_add_to_gc_queue(UNIT(s)); | |
1654 | ||
f2341e0a | 1655 | /* The next restart might not be a manual stop, hence reset the flag indicating manual stops */ |
47342320 LP |
1656 | s->forbid_restart = false; |
1657 | ||
e66cf1a3 | 1658 | /* We want fresh tmpdirs in case service is started again immediately */ |
e8a565cb | 1659 | s->exec_runtime = exec_runtime_unref(s->exec_runtime, true); |
c17ec25e | 1660 | |
53f47dfc | 1661 | if (s->exec_context.runtime_directory_preserve_mode == EXEC_PRESERVE_NO || |
deb4e708 | 1662 | (s->exec_context.runtime_directory_preserve_mode == EXEC_PRESERVE_RESTART && !service_will_restart(UNIT(s)))) |
53f47dfc | 1663 | /* Also, remove the runtime directory */ |
3536f49e | 1664 | exec_context_destroy_runtime_directory(&s->exec_context, UNIT(s)->manager->prefix[EXEC_DIRECTORY_RUNTIME]); |
e66cf1a3 | 1665 | |
00d9ef85 LP |
1666 | /* Get rid of the IPC bits of the user */ |
1667 | unit_unref_uid_gid(UNIT(s), true); | |
1668 | ||
29206d46 LP |
1669 | /* Release the user, and destroy it if we are the only remaining owner */ |
1670 | dynamic_creds_destroy(&s->dynamic_creds); | |
1671 | ||
9285c9ff LN |
1672 | /* Try to delete the pid file. At this point it will be |
1673 | * out-of-date, and some software might be confused by it, so | |
1674 | * let's remove it. */ | |
1675 | if (s->pid_file) | |
fabab190 | 1676 | (void) unlink(s->pid_file); |
9285c9ff | 1677 | |
034c6ed7 LP |
1678 | return; |
1679 | ||
1680 | fail: | |
f2341e0a | 1681 | log_unit_warning_errno(UNIT(s), r, "Failed to run install restart timer: %m"); |
f42806df | 1682 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); |
034c6ed7 LP |
1683 | } |
1684 | ||
f42806df | 1685 | static void service_enter_stop_post(Service *s, ServiceResult f) { |
034c6ed7 LP |
1686 | int r; |
1687 | assert(s); | |
1688 | ||
a0fef983 | 1689 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1690 | s->result = f; |
034c6ed7 | 1691 | |
5e94833f | 1692 | service_unwatch_control_pid(s); |
a911bb9a | 1693 | unit_watch_all_pids(UNIT(s)); |
5e94833f | 1694 | |
117dcc57 ZJS |
1695 | s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST]; |
1696 | if (s->control_command) { | |
867b3b7d LP |
1697 | s->control_command_id = SERVICE_EXEC_STOP_POST; |
1698 | ||
ecedd90f LP |
1699 | r = service_spawn(s, |
1700 | s->control_command, | |
21b2ce39 | 1701 | s->timeout_stop_usec, |
1703fa41 | 1702 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_IS_CONTROL|EXEC_SETENV_RESULT, |
ecedd90f LP |
1703 | &s->control_pid); |
1704 | if (r < 0) | |
034c6ed7 LP |
1705 | goto fail; |
1706 | ||
80876c20 LP |
1707 | service_set_state(s, SERVICE_STOP_POST); |
1708 | } else | |
ac84d1fb | 1709 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
1710 | |
1711 | return; | |
1712 | ||
1713 | fail: | |
f2341e0a | 1714 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop-post' task: %m"); |
f42806df | 1715 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1716 | } |
1717 | ||
4940c0b0 LP |
1718 | static int state_to_kill_operation(ServiceState state) { |
1719 | switch (state) { | |
1720 | ||
1721 | case SERVICE_STOP_SIGABRT: | |
1722 | return KILL_ABORT; | |
1723 | ||
1724 | case SERVICE_STOP_SIGTERM: | |
1725 | case SERVICE_FINAL_SIGTERM: | |
1726 | return KILL_TERMINATE; | |
1727 | ||
1728 | case SERVICE_STOP_SIGKILL: | |
1729 | case SERVICE_FINAL_SIGKILL: | |
1730 | return KILL_KILL; | |
1731 | ||
1732 | default: | |
1733 | return _KILL_OPERATION_INVALID; | |
1734 | } | |
1735 | } | |
1736 | ||
f42806df | 1737 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) { |
034c6ed7 | 1738 | int r; |
034c6ed7 LP |
1739 | |
1740 | assert(s); | |
1741 | ||
a0fef983 | 1742 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1743 | s->result = f; |
034c6ed7 | 1744 | |
a911bb9a LP |
1745 | unit_watch_all_pids(UNIT(s)); |
1746 | ||
cd2086fe LP |
1747 | r = unit_kill_context( |
1748 | UNIT(s), | |
1749 | &s->kill_context, | |
4940c0b0 | 1750 | state_to_kill_operation(state), |
cd2086fe LP |
1751 | s->main_pid, |
1752 | s->control_pid, | |
1753 | s->main_pid_alien); | |
1754 | if (r < 0) | |
1755 | goto fail; | |
034c6ed7 | 1756 | |
cd2086fe | 1757 | if (r > 0) { |
36c16a7c LP |
1758 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_stop_usec)); |
1759 | if (r < 0) | |
1760 | goto fail; | |
d6ea93e3 | 1761 | |
80876c20 | 1762 | service_set_state(s, state); |
1db0db4b | 1763 | } else if (IN_SET(state, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM) && s->kill_context.send_sigkill) |
ac84d1fb | 1764 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_SUCCESS); |
1db0db4b | 1765 | else if (IN_SET(state, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 1766 | service_enter_stop_post(s, SERVICE_SUCCESS); |
1db0db4b | 1767 | else if (state == SERVICE_FINAL_SIGTERM && s->kill_context.send_sigkill) |
ac84d1fb | 1768 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_SUCCESS); |
80876c20 | 1769 | else |
f42806df | 1770 | service_enter_dead(s, SERVICE_SUCCESS, true); |
034c6ed7 LP |
1771 | |
1772 | return; | |
1773 | ||
1774 | fail: | |
f2341e0a | 1775 | log_unit_warning_errno(UNIT(s), r, "Failed to kill processes: %m"); |
034c6ed7 | 1776 | |
a00973af | 1777 | if (IN_SET(state, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 1778 | service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES); |
034c6ed7 | 1779 | else |
f42806df | 1780 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
034c6ed7 LP |
1781 | } |
1782 | ||
308d72dc LP |
1783 | static void service_enter_stop_by_notify(Service *s) { |
1784 | assert(s); | |
1785 | ||
1786 | unit_watch_all_pids(UNIT(s)); | |
1787 | ||
36c16a7c | 1788 | service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_stop_usec)); |
308d72dc | 1789 | |
6041a7ee MS |
1790 | /* The service told us it's stopping, so it's as if we SIGTERM'd it. */ |
1791 | service_set_state(s, SERVICE_STOP_SIGTERM); | |
308d72dc LP |
1792 | } |
1793 | ||
f42806df | 1794 | static void service_enter_stop(Service *s, ServiceResult f) { |
034c6ed7 | 1795 | int r; |
5925dd3c | 1796 | |
034c6ed7 LP |
1797 | assert(s); |
1798 | ||
a0fef983 | 1799 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1800 | s->result = f; |
034c6ed7 | 1801 | |
5e94833f | 1802 | service_unwatch_control_pid(s); |
a911bb9a | 1803 | unit_watch_all_pids(UNIT(s)); |
5e94833f | 1804 | |
117dcc57 ZJS |
1805 | s->control_command = s->exec_command[SERVICE_EXEC_STOP]; |
1806 | if (s->control_command) { | |
867b3b7d LP |
1807 | s->control_command_id = SERVICE_EXEC_STOP; |
1808 | ||
ecedd90f LP |
1809 | r = service_spawn(s, |
1810 | s->control_command, | |
21b2ce39 | 1811 | s->timeout_stop_usec, |
1703fa41 | 1812 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_SETENV_RESULT, |
ecedd90f LP |
1813 | &s->control_pid); |
1814 | if (r < 0) | |
034c6ed7 LP |
1815 | goto fail; |
1816 | ||
80876c20 LP |
1817 | service_set_state(s, SERVICE_STOP); |
1818 | } else | |
f42806df | 1819 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
1820 | |
1821 | return; | |
1822 | ||
1823 | fail: | |
f2341e0a | 1824 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop' task: %m"); |
f42806df | 1825 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1826 | } |
1827 | ||
957c3cf9 LP |
1828 | static bool service_good(Service *s) { |
1829 | int main_pid_ok; | |
1830 | assert(s); | |
1831 | ||
1832 | if (s->type == SERVICE_DBUS && !s->bus_name_good) | |
1833 | return false; | |
1834 | ||
1835 | main_pid_ok = main_pid_good(s); | |
1836 | if (main_pid_ok > 0) /* It's alive */ | |
1837 | return true; | |
1838 | if (main_pid_ok == 0) /* It's dead */ | |
1839 | return false; | |
1840 | ||
1841 | /* OK, we don't know anything about the main PID, maybe | |
1842 | * because there is none. Let's check the control group | |
1843 | * instead. */ | |
1844 | ||
1845 | return cgroup_good(s) != 0; | |
1846 | } | |
1847 | ||
f42806df | 1848 | static void service_enter_running(Service *s, ServiceResult f) { |
80876c20 LP |
1849 | assert(s); |
1850 | ||
a0fef983 | 1851 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1852 | s->result = f; |
80876c20 | 1853 | |
089b64d5 LP |
1854 | service_unwatch_control_pid(s); |
1855 | ||
957c3cf9 | 1856 | if (service_good(s)) { |
308d72dc LP |
1857 | |
1858 | /* If there are any queued up sd_notify() | |
1859 | * notifications, process them now */ | |
1860 | if (s->notify_state == NOTIFY_RELOADING) | |
1861 | service_enter_reload_by_notify(s); | |
1862 | else if (s->notify_state == NOTIFY_STOPPING) | |
1863 | service_enter_stop_by_notify(s); | |
36c16a7c | 1864 | else { |
308d72dc | 1865 | service_set_state(s, SERVICE_RUNNING); |
36c16a7c LP |
1866 | service_arm_timer(s, usec_add(UNIT(s)->active_enter_timestamp.monotonic, s->runtime_max_usec)); |
1867 | } | |
308d72dc | 1868 | |
3d474ef7 | 1869 | } else if (f != SERVICE_SUCCESS) |
c3fda31d | 1870 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
3d474ef7 | 1871 | else if (s->remain_after_exit) |
80876c20 LP |
1872 | service_set_state(s, SERVICE_EXITED); |
1873 | else | |
f42806df | 1874 | service_enter_stop(s, SERVICE_SUCCESS); |
80876c20 LP |
1875 | } |
1876 | ||
034c6ed7 LP |
1877 | static void service_enter_start_post(Service *s) { |
1878 | int r; | |
1879 | assert(s); | |
1880 | ||
5e94833f | 1881 | service_unwatch_control_pid(s); |
842129f5 | 1882 | service_reset_watchdog(s); |
bb242b7b | 1883 | |
117dcc57 ZJS |
1884 | s->control_command = s->exec_command[SERVICE_EXEC_START_POST]; |
1885 | if (s->control_command) { | |
867b3b7d LP |
1886 | s->control_command_id = SERVICE_EXEC_START_POST; |
1887 | ||
ecedd90f LP |
1888 | r = service_spawn(s, |
1889 | s->control_command, | |
21b2ce39 | 1890 | s->timeout_start_usec, |
1703fa41 | 1891 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL, |
ecedd90f LP |
1892 | &s->control_pid); |
1893 | if (r < 0) | |
034c6ed7 LP |
1894 | goto fail; |
1895 | ||
80876c20 LP |
1896 | service_set_state(s, SERVICE_START_POST); |
1897 | } else | |
f42806df | 1898 | service_enter_running(s, SERVICE_SUCCESS); |
034c6ed7 LP |
1899 | |
1900 | return; | |
1901 | ||
1902 | fail: | |
f2341e0a | 1903 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-post' task: %m"); |
f42806df | 1904 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1905 | } |
1906 | ||
e9a4f676 | 1907 | static void service_kill_control_process(Service *s) { |
a6951a50 | 1908 | int r; |
4ad49000 | 1909 | |
a6951a50 LP |
1910 | assert(s); |
1911 | ||
e9a4f676 LP |
1912 | if (s->control_pid <= 0) |
1913 | return; | |
4ad49000 | 1914 | |
e9a4f676 LP |
1915 | r = kill_and_sigcont(s->control_pid, SIGKILL); |
1916 | if (r < 0) { | |
1917 | _cleanup_free_ char *comm = NULL; | |
a6951a50 | 1918 | |
e9a4f676 | 1919 | (void) get_process_comm(s->control_pid, &comm); |
a6951a50 | 1920 | |
e9a4f676 LP |
1921 | log_unit_debug_errno(UNIT(s), r, "Failed to kill control process " PID_FMT " (%s), ignoring: %m", |
1922 | s->control_pid, strna(comm)); | |
a6951a50 | 1923 | } |
4ad49000 LP |
1924 | } |
1925 | ||
034c6ed7 | 1926 | static void service_enter_start(Service *s) { |
4ad49000 | 1927 | ExecCommand *c; |
36c16a7c | 1928 | usec_t timeout; |
034c6ed7 LP |
1929 | pid_t pid; |
1930 | int r; | |
1931 | ||
1932 | assert(s); | |
1933 | ||
41efeaec LP |
1934 | service_unwatch_control_pid(s); |
1935 | service_unwatch_main_pid(s); | |
80876c20 | 1936 | |
a4634b21 LP |
1937 | unit_warn_leftover_processes(UNIT(s)); |
1938 | ||
867b3b7d LP |
1939 | if (s->type == SERVICE_FORKING) { |
1940 | s->control_command_id = SERVICE_EXEC_START; | |
1941 | c = s->control_command = s->exec_command[SERVICE_EXEC_START]; | |
1942 | ||
1943 | s->main_command = NULL; | |
1944 | } else { | |
1945 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
1946 | s->control_command = NULL; | |
1947 | ||
1948 | c = s->main_command = s->exec_command[SERVICE_EXEC_START]; | |
1949 | } | |
34e9ba66 | 1950 | |
96fb8242 | 1951 | if (!c) { |
47fffb35 LP |
1952 | if (s->type != SERVICE_ONESHOT) { |
1953 | /* There's no command line configured for the main command? Hmm, that is strange. This can only | |
1954 | * happen if the configuration changes at runtime. In this case, let's enter a failure | |
1955 | * state. */ | |
1956 | log_unit_error(UNIT(s), "There's no 'start' task anymore we could start: %m"); | |
1957 | r = -ENXIO; | |
1958 | goto fail; | |
1959 | } | |
1960 | ||
96fb8242 LP |
1961 | service_enter_start_post(s); |
1962 | return; | |
1963 | } | |
1964 | ||
36c16a7c LP |
1965 | if (IN_SET(s->type, SERVICE_SIMPLE, SERVICE_IDLE)) |
1966 | /* For simple + idle this is the main process. We don't apply any timeout here, but | |
1967 | * service_enter_running() will later apply the .runtime_max_usec timeout. */ | |
1968 | timeout = USEC_INFINITY; | |
1969 | else | |
1970 | timeout = s->timeout_start_usec; | |
1971 | ||
ecedd90f LP |
1972 | r = service_spawn(s, |
1973 | c, | |
36c16a7c | 1974 | timeout, |
1703fa41 | 1975 | EXEC_PASS_FDS|EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_SET_WATCHDOG, |
ecedd90f LP |
1976 | &pid); |
1977 | if (r < 0) | |
034c6ed7 LP |
1978 | goto fail; |
1979 | ||
36c16a7c | 1980 | if (IN_SET(s->type, SERVICE_SIMPLE, SERVICE_IDLE)) { |
034c6ed7 LP |
1981 | /* For simple services we immediately start |
1982 | * the START_POST binaries. */ | |
1983 | ||
5925dd3c | 1984 | service_set_main_pid(s, pid); |
034c6ed7 LP |
1985 | service_enter_start_post(s); |
1986 | ||
1987 | } else if (s->type == SERVICE_FORKING) { | |
1988 | ||
1989 | /* For forking services we wait until the start | |
1990 | * process exited. */ | |
1991 | ||
e55224ca | 1992 | s->control_pid = pid; |
80876c20 LP |
1993 | service_set_state(s, SERVICE_START); |
1994 | ||
36c16a7c | 1995 | } else if (IN_SET(s->type, SERVICE_ONESHOT, SERVICE_DBUS, SERVICE_NOTIFY)) { |
7d55e835 | 1996 | |
34e9ba66 | 1997 | /* For oneshot services we wait until the start |
7d55e835 LP |
1998 | * process exited, too, but it is our main process. */ |
1999 | ||
05e343b7 | 2000 | /* For D-Bus services we know the main pid right away, |
8c47c732 LP |
2001 | * but wait for the bus name to appear on the |
2002 | * bus. Notify services are similar. */ | |
05e343b7 | 2003 | |
5925dd3c | 2004 | service_set_main_pid(s, pid); |
80876c20 | 2005 | service_set_state(s, SERVICE_START); |
034c6ed7 LP |
2006 | } else |
2007 | assert_not_reached("Unknown service type"); | |
2008 | ||
2009 | return; | |
2010 | ||
2011 | fail: | |
f2341e0a | 2012 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start' task: %m"); |
c3fda31d | 2013 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
2014 | } |
2015 | ||
2016 | static void service_enter_start_pre(Service *s) { | |
2017 | int r; | |
2018 | ||
2019 | assert(s); | |
2020 | ||
5e94833f LP |
2021 | service_unwatch_control_pid(s); |
2022 | ||
117dcc57 ZJS |
2023 | s->control_command = s->exec_command[SERVICE_EXEC_START_PRE]; |
2024 | if (s->control_command) { | |
8f53a7b8 | 2025 | |
a4634b21 LP |
2026 | unit_warn_leftover_processes(UNIT(s)); |
2027 | ||
867b3b7d LP |
2028 | s->control_command_id = SERVICE_EXEC_START_PRE; |
2029 | ||
ecedd90f LP |
2030 | r = service_spawn(s, |
2031 | s->control_command, | |
21b2ce39 | 2032 | s->timeout_start_usec, |
1703fa41 | 2033 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_APPLY_TTY_STDIN, |
ecedd90f LP |
2034 | &s->control_pid); |
2035 | if (r < 0) | |
034c6ed7 LP |
2036 | goto fail; |
2037 | ||
80876c20 LP |
2038 | service_set_state(s, SERVICE_START_PRE); |
2039 | } else | |
034c6ed7 LP |
2040 | service_enter_start(s); |
2041 | ||
2042 | return; | |
2043 | ||
2044 | fail: | |
f2341e0a | 2045 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-pre' task: %m"); |
f42806df | 2046 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
034c6ed7 LP |
2047 | } |
2048 | ||
2049 | static void service_enter_restart(Service *s) { | |
4afd3348 | 2050 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
034c6ed7 | 2051 | int r; |
398ef8ba | 2052 | |
034c6ed7 LP |
2053 | assert(s); |
2054 | ||
a8bb2e65 LP |
2055 | if (UNIT(s)->job && UNIT(s)->job->type == JOB_STOP) { |
2056 | /* Don't restart things if we are going down anyway */ | |
f2341e0a | 2057 | log_unit_info(UNIT(s), "Stop job pending for unit, delaying automatic restart."); |
2edfa366 | 2058 | |
36c16a7c | 2059 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->restart_usec)); |
a8bb2e65 | 2060 | if (r < 0) |
2edfa366 | 2061 | goto fail; |
feae8adb DW |
2062 | |
2063 | return; | |
2edfa366 LP |
2064 | } |
2065 | ||
48bb5876 DW |
2066 | /* Any units that are bound to this service must also be |
2067 | * restarted. We use JOB_RESTART (instead of the more obvious | |
2068 | * JOB_START) here so that those dependency jobs will be added | |
2069 | * as well. */ | |
4bd29fe5 | 2070 | r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_FAIL, &error, NULL); |
48bb5876 | 2071 | if (r < 0) |
034c6ed7 LP |
2072 | goto fail; |
2073 | ||
7a0019d3 LP |
2074 | /* Count the jobs we enqueue for restarting. This counter is maintained as long as the unit isn't fully |
2075 | * stopped, i.e. as long as it remains up or remains in auto-start states. The use can reset the counter | |
2076 | * explicitly however via the usual "systemctl reset-failure" logic. */ | |
2077 | s->n_restarts ++; | |
2078 | s->flush_n_restarts = false; | |
2079 | ||
2080 | log_struct(LOG_INFO, | |
2081 | "MESSAGE_ID=" SD_MESSAGE_UNIT_RESTART_SCHEDULED_STR, | |
2082 | LOG_UNIT_ID(UNIT(s)), | |
f1c50bec | 2083 | LOG_UNIT_INVOCATION_ID(UNIT(s)), |
7a0019d3 LP |
2084 | LOG_UNIT_MESSAGE(UNIT(s), "Scheduled restart job, restart counter is at %u.", s->n_restarts), |
2085 | "N_RESTARTS=%u", s->n_restarts, | |
2086 | NULL); | |
2087 | ||
2088 | /* Notify clients about changed restart counter */ | |
2089 | unit_add_to_dbus_queue(UNIT(s)); | |
2090 | ||
a8bb2e65 LP |
2091 | /* Note that we stay in the SERVICE_AUTO_RESTART state here, |
2092 | * it will be canceled as part of the service_stop() call that | |
2093 | * is executed as part of JOB_RESTART. */ | |
2094 | ||
034c6ed7 LP |
2095 | return; |
2096 | ||
2097 | fail: | |
f2341e0a | 2098 | log_unit_warning(UNIT(s), "Failed to schedule restart job: %s", bus_error_message(&error, -r)); |
f42806df | 2099 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); |
034c6ed7 LP |
2100 | } |
2101 | ||
308d72dc | 2102 | static void service_enter_reload_by_notify(Service *s) { |
15d167f8 JW |
2103 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
2104 | int r; | |
2105 | ||
308d72dc LP |
2106 | assert(s); |
2107 | ||
36c16a7c | 2108 | service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_start_usec)); |
308d72dc | 2109 | service_set_state(s, SERVICE_RELOAD); |
15d167f8 JW |
2110 | |
2111 | /* service_enter_reload_by_notify is never called during a reload, thus no loops are possible. */ | |
2112 | r = manager_propagate_reload(UNIT(s)->manager, UNIT(s), JOB_FAIL, &error); | |
2113 | if (r < 0) | |
2114 | log_unit_warning(UNIT(s), "Failed to schedule propagation of reload: %s", bus_error_message(&error, -r)); | |
308d72dc LP |
2115 | } |
2116 | ||
034c6ed7 LP |
2117 | static void service_enter_reload(Service *s) { |
2118 | int r; | |
2119 | ||
2120 | assert(s); | |
2121 | ||
5e94833f | 2122 | service_unwatch_control_pid(s); |
95c906ae | 2123 | s->reload_result = SERVICE_SUCCESS; |
5e94833f | 2124 | |
117dcc57 ZJS |
2125 | s->control_command = s->exec_command[SERVICE_EXEC_RELOAD]; |
2126 | if (s->control_command) { | |
867b3b7d LP |
2127 | s->control_command_id = SERVICE_EXEC_RELOAD; |
2128 | ||
ecedd90f LP |
2129 | r = service_spawn(s, |
2130 | s->control_command, | |
21b2ce39 | 2131 | s->timeout_start_usec, |
1703fa41 | 2132 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL, |
ecedd90f LP |
2133 | &s->control_pid); |
2134 | if (r < 0) | |
034c6ed7 LP |
2135 | goto fail; |
2136 | ||
80876c20 LP |
2137 | service_set_state(s, SERVICE_RELOAD); |
2138 | } else | |
f42806df | 2139 | service_enter_running(s, SERVICE_SUCCESS); |
034c6ed7 LP |
2140 | |
2141 | return; | |
2142 | ||
2143 | fail: | |
f2341e0a | 2144 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'reload' task: %m"); |
f42806df LP |
2145 | s->reload_result = SERVICE_FAILURE_RESOURCES; |
2146 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
2147 | } |
2148 | ||
f42806df | 2149 | static void service_run_next_control(Service *s) { |
36c16a7c | 2150 | usec_t timeout; |
034c6ed7 LP |
2151 | int r; |
2152 | ||
2153 | assert(s); | |
2154 | assert(s->control_command); | |
2155 | assert(s->control_command->command_next); | |
2156 | ||
34e9ba66 | 2157 | assert(s->control_command_id != SERVICE_EXEC_START); |
034c6ed7 | 2158 | |
34e9ba66 | 2159 | s->control_command = s->control_command->command_next; |
5e94833f LP |
2160 | service_unwatch_control_pid(s); |
2161 | ||
36c16a7c LP |
2162 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
2163 | timeout = s->timeout_start_usec; | |
2164 | else | |
2165 | timeout = s->timeout_stop_usec; | |
2166 | ||
ecedd90f LP |
2167 | r = service_spawn(s, |
2168 | s->control_command, | |
36c16a7c | 2169 | timeout, |
1703fa41 | 2170 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL| |
136dc4c4 LP |
2171 | (IN_SET(s->control_command_id, SERVICE_EXEC_START_PRE, SERVICE_EXEC_STOP_POST) ? EXEC_APPLY_TTY_STDIN : 0)| |
2172 | (IN_SET(s->control_command_id, SERVICE_EXEC_STOP, SERVICE_EXEC_STOP_POST) ? EXEC_SETENV_RESULT : 0), | |
ecedd90f LP |
2173 | &s->control_pid); |
2174 | if (r < 0) | |
034c6ed7 LP |
2175 | goto fail; |
2176 | ||
2177 | return; | |
2178 | ||
2179 | fail: | |
f2341e0a | 2180 | log_unit_warning_errno(UNIT(s), r, "Failed to run next control task: %m"); |
034c6ed7 | 2181 | |
4cd9fa81 | 2182 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START_POST, SERVICE_STOP)) |
f42806df | 2183 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 | 2184 | else if (s->state == SERVICE_STOP_POST) |
f42806df | 2185 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
e2f3b44c | 2186 | else if (s->state == SERVICE_RELOAD) { |
f42806df LP |
2187 | s->reload_result = SERVICE_FAILURE_RESOURCES; |
2188 | service_enter_running(s, SERVICE_SUCCESS); | |
e2f3b44c | 2189 | } else |
f42806df | 2190 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
5cb5a6ff LP |
2191 | } |
2192 | ||
f42806df | 2193 | static void service_run_next_main(Service *s) { |
34e9ba66 LP |
2194 | pid_t pid; |
2195 | int r; | |
2196 | ||
2197 | assert(s); | |
867b3b7d LP |
2198 | assert(s->main_command); |
2199 | assert(s->main_command->command_next); | |
2200 | assert(s->type == SERVICE_ONESHOT); | |
34e9ba66 | 2201 | |
867b3b7d | 2202 | s->main_command = s->main_command->command_next; |
34e9ba66 LP |
2203 | service_unwatch_main_pid(s); |
2204 | ||
ecedd90f LP |
2205 | r = service_spawn(s, |
2206 | s->main_command, | |
21b2ce39 | 2207 | s->timeout_start_usec, |
1703fa41 | 2208 | EXEC_PASS_FDS|EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_SET_WATCHDOG, |
ecedd90f LP |
2209 | &pid); |
2210 | if (r < 0) | |
34e9ba66 LP |
2211 | goto fail; |
2212 | ||
2213 | service_set_main_pid(s, pid); | |
2214 | ||
2215 | return; | |
2216 | ||
2217 | fail: | |
f2341e0a | 2218 | log_unit_warning_errno(UNIT(s), r, "Failed to run next main task: %m"); |
f42806df | 2219 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
34e9ba66 LP |
2220 | } |
2221 | ||
87f0e418 LP |
2222 | static int service_start(Unit *u) { |
2223 | Service *s = SERVICE(u); | |
07299350 | 2224 | int r; |
5cb5a6ff LP |
2225 | |
2226 | assert(s); | |
2227 | ||
034c6ed7 LP |
2228 | /* We cannot fulfill this request right now, try again later |
2229 | * please! */ | |
a00973af LP |
2230 | if (IN_SET(s->state, |
2231 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, | |
2232 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) | |
5cb5a6ff LP |
2233 | return -EAGAIN; |
2234 | ||
034c6ed7 | 2235 | /* Already on it! */ |
a00973af | 2236 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST)) |
034c6ed7 LP |
2237 | return 0; |
2238 | ||
2e9d6c12 | 2239 | /* A service that will be restarted must be stopped first to |
7f2cddae | 2240 | * trigger BindsTo and/or OnFailure dependencies. If a user |
2e9d6c12 | 2241 | * does not want to wait for the holdoff time to elapse, the |
d4943dc7 LP |
2242 | * service should be manually restarted, not started. We |
2243 | * simply return EAGAIN here, so that any start jobs stay | |
2244 | * queued, and assume that the auto restart timer will | |
2245 | * eventually trigger the restart. */ | |
2246 | if (s->state == SERVICE_AUTO_RESTART) | |
a8bb2e65 | 2247 | return -EAGAIN; |
2e9d6c12 | 2248 | |
a00973af | 2249 | assert(IN_SET(s->state, SERVICE_DEAD, SERVICE_FAILED)); |
5cb5a6ff | 2250 | |
07299350 LP |
2251 | /* Make sure we don't enter a busy loop of some kind. */ |
2252 | r = unit_start_limit_test(u); | |
2253 | if (r < 0) { | |
2254 | service_enter_dead(s, SERVICE_FAILURE_START_LIMIT_HIT, false); | |
2255 | return r; | |
2256 | } | |
2257 | ||
4b58153d LP |
2258 | r = unit_acquire_invocation_id(u); |
2259 | if (r < 0) | |
2260 | return r; | |
2261 | ||
f42806df LP |
2262 | s->result = SERVICE_SUCCESS; |
2263 | s->reload_result = SERVICE_SUCCESS; | |
034c6ed7 | 2264 | s->main_pid_known = false; |
6dfa5494 | 2265 | s->main_pid_alien = false; |
47342320 | 2266 | s->forbid_restart = false; |
3c7416b6 LP |
2267 | |
2268 | u->reset_accounting = true; | |
034c6ed7 | 2269 | |
a1e58e8e | 2270 | s->status_text = mfree(s->status_text); |
8cfdb077 LP |
2271 | s->status_errno = 0; |
2272 | ||
308d72dc LP |
2273 | s->notify_state = NOTIFY_UNKNOWN; |
2274 | ||
2787d83c M |
2275 | s->watchdog_override_enable = false; |
2276 | s->watchdog_override_usec = 0; | |
2277 | ||
7a0019d3 LP |
2278 | /* This is not an automatic restart? Flush the restart counter then */ |
2279 | if (s->flush_n_restarts) { | |
2280 | s->n_restarts = 0; | |
2281 | s->flush_n_restarts = false; | |
2282 | } | |
2283 | ||
034c6ed7 | 2284 | service_enter_start_pre(s); |
82a2b6bb | 2285 | return 1; |
5cb5a6ff LP |
2286 | } |
2287 | ||
87f0e418 LP |
2288 | static int service_stop(Unit *u) { |
2289 | Service *s = SERVICE(u); | |
5cb5a6ff LP |
2290 | |
2291 | assert(s); | |
2292 | ||
a509f0e6 | 2293 | /* Don't create restart jobs from manual stops. */ |
47342320 | 2294 | s->forbid_restart = true; |
034c6ed7 | 2295 | |
e537352b | 2296 | /* Already on it */ |
a00973af LP |
2297 | if (IN_SET(s->state, |
2298 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, | |
2299 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) | |
e537352b LP |
2300 | return 0; |
2301 | ||
f0c7b229 | 2302 | /* A restart will be scheduled or is in progress. */ |
034c6ed7 | 2303 | if (s->state == SERVICE_AUTO_RESTART) { |
0c7f15b3 | 2304 | service_set_state(s, SERVICE_DEAD); |
034c6ed7 LP |
2305 | return 0; |
2306 | } | |
2307 | ||
3f6c78dc LP |
2308 | /* If there's already something running we go directly into |
2309 | * kill mode. */ | |
a00973af | 2310 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RELOAD)) { |
f42806df | 2311 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
3f6c78dc LP |
2312 | return 0; |
2313 | } | |
5cb5a6ff | 2314 | |
a00973af | 2315 | assert(IN_SET(s->state, SERVICE_RUNNING, SERVICE_EXITED)); |
3a762661 | 2316 | |
f42806df | 2317 | service_enter_stop(s, SERVICE_SUCCESS); |
82a2b6bb | 2318 | return 1; |
5cb5a6ff LP |
2319 | } |
2320 | ||
87f0e418 LP |
2321 | static int service_reload(Unit *u) { |
2322 | Service *s = SERVICE(u); | |
034c6ed7 LP |
2323 | |
2324 | assert(s); | |
2325 | ||
3742095b | 2326 | assert(IN_SET(s->state, SERVICE_RUNNING, SERVICE_EXITED)); |
034c6ed7 LP |
2327 | |
2328 | service_enter_reload(s); | |
2d018ae2 | 2329 | return 1; |
5cb5a6ff LP |
2330 | } |
2331 | ||
44a6b1b6 | 2332 | _pure_ static bool service_can_reload(Unit *u) { |
87f0e418 | 2333 | Service *s = SERVICE(u); |
034c6ed7 LP |
2334 | |
2335 | assert(s); | |
2336 | ||
2337 | return !!s->exec_command[SERVICE_EXEC_RELOAD]; | |
2338 | } | |
2339 | ||
e266c068 MS |
2340 | static unsigned service_exec_command_index(Unit *u, ServiceExecCommand id, ExecCommand *current) { |
2341 | Service *s = SERVICE(u); | |
2342 | unsigned idx = 0; | |
2343 | ExecCommand *first, *c; | |
2344 | ||
2345 | assert(s); | |
2346 | ||
2347 | first = s->exec_command[id]; | |
2348 | ||
2349 | /* Figure out where we are in the list by walking back to the beginning */ | |
2350 | for (c = current; c != first; c = c->command_prev) | |
2351 | idx++; | |
2352 | ||
2353 | return idx; | |
2354 | } | |
2355 | ||
2356 | static int service_serialize_exec_command(Unit *u, FILE *f, ExecCommand *command) { | |
2357 | Service *s = SERVICE(u); | |
2358 | ServiceExecCommand id; | |
2359 | unsigned idx; | |
2360 | const char *type; | |
2361 | char **arg; | |
e266c068 MS |
2362 | _cleanup_free_ char *args = NULL, *p = NULL; |
2363 | size_t allocated = 0, length = 0; | |
2364 | ||
2365 | assert(s); | |
2366 | assert(f); | |
2367 | ||
2368 | if (!command) | |
2369 | return 0; | |
2370 | ||
2371 | if (command == s->control_command) { | |
2372 | type = "control"; | |
2373 | id = s->control_command_id; | |
2374 | } else { | |
2375 | type = "main"; | |
2376 | id = SERVICE_EXEC_START; | |
2377 | } | |
2378 | ||
2379 | idx = service_exec_command_index(u, id, command); | |
2380 | ||
2381 | STRV_FOREACH(arg, command->argv) { | |
2382 | size_t n; | |
2383 | _cleanup_free_ char *e = NULL; | |
2384 | ||
2385 | e = xescape(*arg, WHITESPACE); | |
2386 | if (!e) | |
2387 | return -ENOMEM; | |
2388 | ||
2389 | n = strlen(e); | |
2390 | if (!GREEDY_REALLOC(args, allocated, length + 1 + n + 1)) | |
2391 | return -ENOMEM; | |
2392 | ||
2393 | if (length > 0) | |
2394 | args[length++] = ' '; | |
2395 | ||
2396 | memcpy(args + length, e, n); | |
2397 | length += n; | |
2398 | } | |
2399 | ||
2400 | if (!GREEDY_REALLOC(args, allocated, length + 1)) | |
2401 | return -ENOMEM; | |
2402 | args[length++] = 0; | |
2403 | ||
2404 | p = xescape(command->path, WHITESPACE); | |
2405 | if (!p) | |
2406 | return -ENOMEM; | |
2407 | ||
2408 | fprintf(f, "%s-command=%s %u %s %s\n", type, service_exec_command_to_string(id), idx, p, args); | |
2409 | ||
2410 | return 0; | |
2411 | } | |
2412 | ||
a16e1123 LP |
2413 | static int service_serialize(Unit *u, FILE *f, FDSet *fds) { |
2414 | Service *s = SERVICE(u); | |
2339fc93 | 2415 | ServiceFDStore *fs; |
a34ceba6 | 2416 | int r; |
a16e1123 LP |
2417 | |
2418 | assert(u); | |
2419 | assert(f); | |
2420 | assert(fds); | |
2421 | ||
2422 | unit_serialize_item(u, f, "state", service_state_to_string(s->state)); | |
f42806df LP |
2423 | unit_serialize_item(u, f, "result", service_result_to_string(s->result)); |
2424 | unit_serialize_item(u, f, "reload-result", service_result_to_string(s->reload_result)); | |
a16e1123 LP |
2425 | |
2426 | if (s->control_pid > 0) | |
f06db334 | 2427 | unit_serialize_item_format(u, f, "control-pid", PID_FMT, s->control_pid); |
a16e1123 | 2428 | |
5925dd3c | 2429 | if (s->main_pid_known && s->main_pid > 0) |
ccd06097 | 2430 | unit_serialize_item_format(u, f, "main-pid", PID_FMT, s->main_pid); |
a16e1123 LP |
2431 | |
2432 | unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known)); | |
de1d4f9b | 2433 | unit_serialize_item(u, f, "bus-name-good", yes_no(s->bus_name_good)); |
d8ccf5fd | 2434 | unit_serialize_item(u, f, "bus-name-owner", s->bus_name_owner); |
a16e1123 | 2435 | |
7a0019d3 | 2436 | unit_serialize_item_format(u, f, "n-restarts", "%u", s->n_restarts); |
7f923884 | 2437 | unit_serialize_item(u, f, "flush-n-restarts", yes_no(s->flush_n_restarts)); |
7a0019d3 | 2438 | |
a34ceba6 LP |
2439 | r = unit_serialize_item_escaped(u, f, "status-text", s->status_text); |
2440 | if (r < 0) | |
2441 | return r; | |
3a2776bc | 2442 | |
e266c068 MS |
2443 | service_serialize_exec_command(u, f, s->control_command); |
2444 | service_serialize_exec_command(u, f, s->main_command); | |
a16e1123 | 2445 | |
a34ceba6 LP |
2446 | r = unit_serialize_item_fd(u, f, fds, "stdin-fd", s->stdin_fd); |
2447 | if (r < 0) | |
2448 | return r; | |
2449 | r = unit_serialize_item_fd(u, f, fds, "stdout-fd", s->stdout_fd); | |
2450 | if (r < 0) | |
2451 | return r; | |
2452 | r = unit_serialize_item_fd(u, f, fds, "stderr-fd", s->stderr_fd); | |
2453 | if (r < 0) | |
2454 | return r; | |
e44da745 | 2455 | |
9dfb64f8 ZJS |
2456 | if (UNIT_ISSET(s->accept_socket)) { |
2457 | r = unit_serialize_item(u, f, "accept-socket", UNIT_DEREF(s->accept_socket)->id); | |
2458 | if (r < 0) | |
2459 | return r; | |
2460 | } | |
2461 | ||
a34ceba6 | 2462 | r = unit_serialize_item_fd(u, f, fds, "socket-fd", s->socket_fd); |
a34ceba6 LP |
2463 | if (r < 0) |
2464 | return r; | |
e44da745 | 2465 | |
2339fc93 | 2466 | LIST_FOREACH(fd_store, fs, s->fd_store) { |
8dd4c05b | 2467 | _cleanup_free_ char *c = NULL; |
2339fc93 LP |
2468 | int copy; |
2469 | ||
2470 | copy = fdset_put_dup(fds, fs->fd); | |
2471 | if (copy < 0) | |
2472 | return copy; | |
2473 | ||
8dd4c05b LP |
2474 | c = cescape(fs->fdname); |
2475 | ||
2476 | unit_serialize_item_format(u, f, "fd-store-fd", "%i %s", copy, strempty(c)); | |
2339fc93 LP |
2477 | } |
2478 | ||
ecdbca40 | 2479 | if (s->main_exec_status.pid > 0) { |
f06db334 LP |
2480 | unit_serialize_item_format(u, f, "main-exec-status-pid", PID_FMT, s->main_exec_status.pid); |
2481 | dual_timestamp_serialize(f, "main-exec-status-start", &s->main_exec_status.start_timestamp); | |
2482 | dual_timestamp_serialize(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp); | |
ecdbca40 | 2483 | |
799fd0fd | 2484 | if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) { |
f06db334 LP |
2485 | unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code); |
2486 | unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status); | |
ecdbca40 LP |
2487 | } |
2488 | } | |
f06db334 | 2489 | |
36b693a6 | 2490 | dual_timestamp_serialize(f, "watchdog-timestamp", &s->watchdog_timestamp); |
ecdbca40 | 2491 | |
a34ceba6 | 2492 | unit_serialize_item(u, f, "forbid-restart", yes_no(s->forbid_restart)); |
6aca9a58 | 2493 | |
2787d83c M |
2494 | if (s->watchdog_override_enable) |
2495 | unit_serialize_item_format(u, f, "watchdog-override-usec", USEC_FMT, s->watchdog_override_usec); | |
2496 | ||
a16e1123 LP |
2497 | return 0; |
2498 | } | |
2499 | ||
e266c068 MS |
2500 | static int service_deserialize_exec_command(Unit *u, const char *key, const char *value) { |
2501 | Service *s = SERVICE(u); | |
2502 | int r; | |
2503 | unsigned idx = 0, i; | |
2504 | bool control, found = false; | |
2505 | ServiceExecCommand id = _SERVICE_EXEC_COMMAND_INVALID; | |
2506 | ExecCommand *command = NULL; | |
6eeec374 | 2507 | _cleanup_free_ char *path = NULL; |
e266c068 MS |
2508 | _cleanup_strv_free_ char **argv = NULL; |
2509 | ||
2510 | enum ExecCommandState { | |
2511 | STATE_EXEC_COMMAND_TYPE, | |
2512 | STATE_EXEC_COMMAND_INDEX, | |
2513 | STATE_EXEC_COMMAND_PATH, | |
2514 | STATE_EXEC_COMMAND_ARGS, | |
2515 | _STATE_EXEC_COMMAND_MAX, | |
2516 | _STATE_EXEC_COMMAND_INVALID = -1, | |
2517 | } state; | |
2518 | ||
2519 | assert(s); | |
2520 | assert(key); | |
2521 | assert(value); | |
2522 | ||
2523 | control = streq(key, "control-command"); | |
2524 | ||
2525 | state = STATE_EXEC_COMMAND_TYPE; | |
2526 | ||
2527 | for (;;) { | |
2528 | _cleanup_free_ char *arg = NULL; | |
2529 | ||
2530 | r = extract_first_word(&value, &arg, NULL, EXTRACT_CUNESCAPE); | |
2531 | if (r == 0) | |
2532 | break; | |
2533 | else if (r < 0) | |
2534 | return r; | |
2535 | ||
2536 | switch (state) { | |
2537 | case STATE_EXEC_COMMAND_TYPE: | |
2538 | id = service_exec_command_from_string(arg); | |
2539 | if (id < 0) | |
2540 | return -EINVAL; | |
2541 | ||
2542 | state = STATE_EXEC_COMMAND_INDEX; | |
2543 | break; | |
2544 | case STATE_EXEC_COMMAND_INDEX: | |
2545 | r = safe_atou(arg, &idx); | |
2546 | if (r < 0) | |
2547 | return -EINVAL; | |
2548 | ||
2549 | state = STATE_EXEC_COMMAND_PATH; | |
2550 | break; | |
2551 | case STATE_EXEC_COMMAND_PATH: | |
2552 | path = arg; | |
2553 | arg = NULL; | |
2554 | state = STATE_EXEC_COMMAND_ARGS; | |
2555 | ||
2556 | if (!path_is_absolute(path)) | |
2557 | return -EINVAL; | |
2558 | break; | |
2559 | case STATE_EXEC_COMMAND_ARGS: | |
2560 | r = strv_extend(&argv, arg); | |
2561 | if (r < 0) | |
2562 | return -ENOMEM; | |
2563 | break; | |
2564 | default: | |
2565 | assert_not_reached("Unknown error at deserialization of exec command"); | |
2566 | break; | |
2567 | } | |
2568 | } | |
2569 | ||
2570 | if (state != STATE_EXEC_COMMAND_ARGS) | |
2571 | return -EINVAL; | |
2572 | ||
2573 | /* Let's check whether exec command on given offset matches data that we just deserialized */ | |
2574 | for (command = s->exec_command[id], i = 0; command; command = command->command_next, i++) { | |
2575 | if (i != idx) | |
2576 | continue; | |
2577 | ||
2578 | found = strv_equal(argv, command->argv) && streq(command->path, path); | |
2579 | break; | |
2580 | } | |
2581 | ||
2582 | if (!found) { | |
2583 | /* Command at the index we serialized is different, let's look for command that exactly | |
2584 | * matches but is on different index. If there is no such command we will not resume execution. */ | |
2585 | for (command = s->exec_command[id]; command; command = command->command_next) | |
2586 | if (strv_equal(command->argv, argv) && streq(command->path, path)) | |
2587 | break; | |
2588 | } | |
2589 | ||
2590 | if (command && control) | |
2591 | s->control_command = command; | |
2592 | else if (command) | |
2593 | s->main_command = command; | |
2594 | else | |
2595 | log_unit_warning(u, "Current command vanished from the unit file, execution of the command list won't be resumed."); | |
2596 | ||
2597 | return 0; | |
2598 | } | |
2599 | ||
a16e1123 LP |
2600 | static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { |
2601 | Service *s = SERVICE(u); | |
2339fc93 | 2602 | int r; |
a16e1123 LP |
2603 | |
2604 | assert(u); | |
2605 | assert(key); | |
2606 | assert(value); | |
2607 | assert(fds); | |
2608 | ||
2609 | if (streq(key, "state")) { | |
2610 | ServiceState state; | |
2611 | ||
117dcc57 ZJS |
2612 | state = service_state_from_string(value); |
2613 | if (state < 0) | |
f2341e0a | 2614 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
2615 | else |
2616 | s->deserialized_state = state; | |
f42806df LP |
2617 | } else if (streq(key, "result")) { |
2618 | ServiceResult f; | |
2619 | ||
2620 | f = service_result_from_string(value); | |
2621 | if (f < 0) | |
f2341e0a | 2622 | log_unit_debug(u, "Failed to parse result value: %s", value); |
f42806df LP |
2623 | else if (f != SERVICE_SUCCESS) |
2624 | s->result = f; | |
2625 | ||
2626 | } else if (streq(key, "reload-result")) { | |
2627 | ServiceResult f; | |
2628 | ||
2629 | f = service_result_from_string(value); | |
2630 | if (f < 0) | |
f2341e0a | 2631 | log_unit_debug(u, "Failed to parse reload result value: %s", value); |
f42806df LP |
2632 | else if (f != SERVICE_SUCCESS) |
2633 | s->reload_result = f; | |
a16e1123 | 2634 | |
a16e1123 | 2635 | } else if (streq(key, "control-pid")) { |
5925dd3c | 2636 | pid_t pid; |
a16e1123 | 2637 | |
e364ad06 | 2638 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2639 | log_unit_debug(u, "Failed to parse control-pid value: %s", value); |
a16e1123 | 2640 | else |
e55224ca | 2641 | s->control_pid = pid; |
a16e1123 | 2642 | } else if (streq(key, "main-pid")) { |
5925dd3c | 2643 | pid_t pid; |
a16e1123 | 2644 | |
e364ad06 | 2645 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2646 | log_unit_debug(u, "Failed to parse main-pid value: %s", value); |
eabd3e56 LP |
2647 | else |
2648 | (void) service_set_main_pid(s, pid); | |
a16e1123 LP |
2649 | } else if (streq(key, "main-pid-known")) { |
2650 | int b; | |
2651 | ||
117dcc57 ZJS |
2652 | b = parse_boolean(value); |
2653 | if (b < 0) | |
f2341e0a | 2654 | log_unit_debug(u, "Failed to parse main-pid-known value: %s", value); |
a16e1123 LP |
2655 | else |
2656 | s->main_pid_known = b; | |
de1d4f9b WF |
2657 | } else if (streq(key, "bus-name-good")) { |
2658 | int b; | |
2659 | ||
2660 | b = parse_boolean(value); | |
2661 | if (b < 0) | |
2662 | log_unit_debug(u, "Failed to parse bus-name-good value: %s", value); | |
2663 | else | |
2664 | s->bus_name_good = b; | |
d8ccf5fd DM |
2665 | } else if (streq(key, "bus-name-owner")) { |
2666 | r = free_and_strdup(&s->bus_name_owner, value); | |
2667 | if (r < 0) | |
2668 | log_unit_error_errno(u, r, "Unable to deserialize current bus owner %s: %m", value); | |
3a2776bc LP |
2669 | } else if (streq(key, "status-text")) { |
2670 | char *t; | |
2671 | ||
f2341e0a LP |
2672 | r = cunescape(value, 0, &t); |
2673 | if (r < 0) | |
2674 | log_unit_debug_errno(u, r, "Failed to unescape status text: %s", value); | |
117dcc57 | 2675 | else { |
3a2776bc LP |
2676 | free(s->status_text); |
2677 | s->status_text = t; | |
2678 | } | |
2679 | ||
9dfb64f8 ZJS |
2680 | } else if (streq(key, "accept-socket")) { |
2681 | Unit *socket; | |
2682 | ||
2683 | r = manager_load_unit(u->manager, value, NULL, NULL, &socket); | |
2684 | if (r < 0) | |
2685 | log_unit_debug_errno(u, r, "Failed to load accept-socket unit: %s", value); | |
2686 | else { | |
2687 | unit_ref_set(&s->accept_socket, socket); | |
2688 | SOCKET(socket)->n_connections++; | |
2689 | } | |
2690 | ||
a16e1123 LP |
2691 | } else if (streq(key, "socket-fd")) { |
2692 | int fd; | |
2693 | ||
2694 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 2695 | log_unit_debug(u, "Failed to parse socket-fd value: %s", value); |
a16e1123 | 2696 | else { |
574634bc | 2697 | asynchronous_close(s->socket_fd); |
a16e1123 LP |
2698 | s->socket_fd = fdset_remove(fds, fd); |
2699 | } | |
2339fc93 | 2700 | } else if (streq(key, "fd-store-fd")) { |
8dd4c05b LP |
2701 | const char *fdv; |
2702 | size_t pf; | |
2339fc93 LP |
2703 | int fd; |
2704 | ||
8dd4c05b LP |
2705 | pf = strcspn(value, WHITESPACE); |
2706 | fdv = strndupa(value, pf); | |
2707 | ||
2708 | if (safe_atoi(fdv, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 2709 | log_unit_debug(u, "Failed to parse fd-store-fd value: %s", value); |
2339fc93 | 2710 | else { |
8dd4c05b LP |
2711 | _cleanup_free_ char *t = NULL; |
2712 | const char *fdn; | |
2713 | ||
2714 | fdn = value + pf; | |
2715 | fdn += strspn(fdn, WHITESPACE); | |
2716 | (void) cunescape(fdn, 0, &t); | |
2717 | ||
2718 | r = service_add_fd_store(s, fd, t); | |
2339fc93 | 2719 | if (r < 0) |
f2341e0a | 2720 | log_unit_error_errno(u, r, "Failed to add fd to store: %m"); |
9021ff17 | 2721 | else |
2339fc93 LP |
2722 | fdset_remove(fds, fd); |
2723 | } | |
2724 | ||
ecdbca40 LP |
2725 | } else if (streq(key, "main-exec-status-pid")) { |
2726 | pid_t pid; | |
2727 | ||
e364ad06 | 2728 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2729 | log_unit_debug(u, "Failed to parse main-exec-status-pid value: %s", value); |
ecdbca40 LP |
2730 | else |
2731 | s->main_exec_status.pid = pid; | |
2732 | } else if (streq(key, "main-exec-status-code")) { | |
2733 | int i; | |
2734 | ||
e364ad06 | 2735 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 2736 | log_unit_debug(u, "Failed to parse main-exec-status-code value: %s", value); |
ecdbca40 LP |
2737 | else |
2738 | s->main_exec_status.code = i; | |
2739 | } else if (streq(key, "main-exec-status-status")) { | |
2740 | int i; | |
2741 | ||
e364ad06 | 2742 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 2743 | log_unit_debug(u, "Failed to parse main-exec-status-status value: %s", value); |
ecdbca40 LP |
2744 | else |
2745 | s->main_exec_status.status = i; | |
799fd0fd LP |
2746 | } else if (streq(key, "main-exec-status-start")) |
2747 | dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp); | |
2748 | else if (streq(key, "main-exec-status-exit")) | |
2749 | dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp); | |
a6927d7f MO |
2750 | else if (streq(key, "watchdog-timestamp")) |
2751 | dual_timestamp_deserialize(value, &s->watchdog_timestamp); | |
613b411c | 2752 | else if (streq(key, "forbid-restart")) { |
6aca9a58 SE |
2753 | int b; |
2754 | ||
2755 | b = parse_boolean(value); | |
2756 | if (b < 0) | |
f2341e0a | 2757 | log_unit_debug(u, "Failed to parse forbid-restart value: %s", value); |
6aca9a58 SE |
2758 | else |
2759 | s->forbid_restart = b; | |
a34ceba6 LP |
2760 | } else if (streq(key, "stdin-fd")) { |
2761 | int fd; | |
2762 | ||
2763 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2764 | log_unit_debug(u, "Failed to parse stdin-fd value: %s", value); | |
2765 | else { | |
2766 | asynchronous_close(s->stdin_fd); | |
2767 | s->stdin_fd = fdset_remove(fds, fd); | |
1e22b5cd | 2768 | s->exec_context.stdio_as_fds = true; |
a34ceba6 LP |
2769 | } |
2770 | } else if (streq(key, "stdout-fd")) { | |
2771 | int fd; | |
2772 | ||
2773 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2774 | log_unit_debug(u, "Failed to parse stdout-fd value: %s", value); | |
2775 | else { | |
2776 | asynchronous_close(s->stdout_fd); | |
2777 | s->stdout_fd = fdset_remove(fds, fd); | |
1e22b5cd | 2778 | s->exec_context.stdio_as_fds = true; |
a34ceba6 LP |
2779 | } |
2780 | } else if (streq(key, "stderr-fd")) { | |
2781 | int fd; | |
2782 | ||
2783 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2784 | log_unit_debug(u, "Failed to parse stderr-fd value: %s", value); | |
2785 | else { | |
2786 | asynchronous_close(s->stderr_fd); | |
2787 | s->stderr_fd = fdset_remove(fds, fd); | |
1e22b5cd | 2788 | s->exec_context.stdio_as_fds = true; |
a34ceba6 | 2789 | } |
2787d83c M |
2790 | } else if (streq(key, "watchdog-override-usec")) { |
2791 | usec_t watchdog_override_usec; | |
2792 | if (timestamp_deserialize(value, &watchdog_override_usec) < 0) | |
2793 | log_unit_debug(u, "Failed to parse watchdog_override_usec value: %s", value); | |
2794 | else { | |
2795 | s->watchdog_override_enable = true; | |
2796 | s->watchdog_override_usec = watchdog_override_usec; | |
2797 | } | |
e266c068 MS |
2798 | } else if (STR_IN_SET(key, "main-command", "control-command")) { |
2799 | r = service_deserialize_exec_command(u, key, value); | |
2800 | if (r < 0) | |
2801 | log_unit_debug_errno(u, r, "Failed to parse serialized command \"%s\": %m", value); | |
7a0019d3 LP |
2802 | |
2803 | } else if (streq(key, "n-restarts")) { | |
2804 | r = safe_atou(value, &s->n_restarts); | |
2805 | if (r < 0) | |
2806 | log_unit_debug_errno(u, r, "Failed to parse serialized restart counter '%s': %m", value); | |
2807 | ||
2808 | } else if (streq(key, "flush-n-restarts")) { | |
2809 | r = parse_boolean(value); | |
2810 | if (r < 0) | |
2811 | log_unit_debug_errno(u, r, "Failed to parse serialized flush restart counter setting '%s': %m", value); | |
2812 | else | |
2813 | s->flush_n_restarts = r; | |
c17ec25e | 2814 | } else |
f2341e0a | 2815 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
2816 | |
2817 | return 0; | |
2818 | } | |
2819 | ||
44a6b1b6 | 2820 | _pure_ static UnitActiveState service_active_state(Unit *u) { |
e056b01d LP |
2821 | const UnitActiveState *table; |
2822 | ||
87f0e418 | 2823 | assert(u); |
5cb5a6ff | 2824 | |
e056b01d LP |
2825 | table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
2826 | ||
2827 | return table[SERVICE(u)->state]; | |
034c6ed7 LP |
2828 | } |
2829 | ||
10a94420 LP |
2830 | static const char *service_sub_state_to_string(Unit *u) { |
2831 | assert(u); | |
2832 | ||
2833 | return service_state_to_string(SERVICE(u)->state); | |
2834 | } | |
2835 | ||
f2f725e5 | 2836 | static bool service_may_gc(Unit *u) { |
701cc384 LP |
2837 | Service *s = SERVICE(u); |
2838 | ||
2839 | assert(s); | |
2840 | ||
e98b2fbb | 2841 | /* Never clean up services that still have a process around, even if the service is formally dead. Note that |
f2f725e5 | 2842 | * unit_may_gc() already checked our cgroup for us, we just check our two additional PIDs, too, in case they |
e98b2fbb LP |
2843 | * have moved outside of the cgroup. */ |
2844 | ||
2845 | if (main_pid_good(s) > 0 || | |
6d55002a | 2846 | control_pid_good(s) > 0) |
f2f725e5 | 2847 | return false; |
6d55002a | 2848 | |
f2f725e5 | 2849 | return true; |
6d55002a LP |
2850 | } |
2851 | ||
3a111838 MS |
2852 | static int service_retry_pid_file(Service *s) { |
2853 | int r; | |
2854 | ||
2855 | assert(s->pid_file); | |
3742095b | 2856 | assert(IN_SET(s->state, SERVICE_START, SERVICE_START_POST)); |
3a111838 MS |
2857 | |
2858 | r = service_load_pid_file(s, false); | |
2859 | if (r < 0) | |
2860 | return r; | |
2861 | ||
2862 | service_unwatch_pid_file(s); | |
2863 | ||
f42806df | 2864 | service_enter_running(s, SERVICE_SUCCESS); |
3a111838 MS |
2865 | return 0; |
2866 | } | |
2867 | ||
2868 | static int service_watch_pid_file(Service *s) { | |
2869 | int r; | |
2870 | ||
f2341e0a | 2871 | log_unit_debug(UNIT(s), "Setting watch for PID file %s", s->pid_file_pathspec->path); |
8bb2d17d | 2872 | |
718db961 | 2873 | r = path_spec_watch(s->pid_file_pathspec, service_dispatch_io); |
3a111838 MS |
2874 | if (r < 0) |
2875 | goto fail; | |
2876 | ||
2877 | /* the pidfile might have appeared just before we set the watch */ | |
f2341e0a | 2878 | log_unit_debug(UNIT(s), "Trying to read PID file %s in case it changed", s->pid_file_pathspec->path); |
3a111838 MS |
2879 | service_retry_pid_file(s); |
2880 | ||
2881 | return 0; | |
2882 | fail: | |
f2341e0a | 2883 | log_unit_error_errno(UNIT(s), r, "Failed to set a watch for PID file %s: %m", s->pid_file_pathspec->path); |
3a111838 MS |
2884 | service_unwatch_pid_file(s); |
2885 | return r; | |
2886 | } | |
2887 | ||
2888 | static int service_demand_pid_file(Service *s) { | |
2889 | PathSpec *ps; | |
2890 | ||
2891 | assert(s->pid_file); | |
2892 | assert(!s->pid_file_pathspec); | |
2893 | ||
2894 | ps = new0(PathSpec, 1); | |
2895 | if (!ps) | |
2896 | return -ENOMEM; | |
2897 | ||
718db961 | 2898 | ps->unit = UNIT(s); |
3a111838 MS |
2899 | ps->path = strdup(s->pid_file); |
2900 | if (!ps->path) { | |
2901 | free(ps); | |
2902 | return -ENOMEM; | |
2903 | } | |
2904 | ||
2905 | path_kill_slashes(ps->path); | |
2906 | ||
2907 | /* PATH_CHANGED would not be enough. There are daemons (sendmail) that | |
2908 | * keep their PID file open all the time. */ | |
2909 | ps->type = PATH_MODIFIED; | |
2910 | ps->inotify_fd = -1; | |
2911 | ||
2912 | s->pid_file_pathspec = ps; | |
2913 | ||
2914 | return service_watch_pid_file(s); | |
2915 | } | |
2916 | ||
718db961 | 2917 | static int service_dispatch_io(sd_event_source *source, int fd, uint32_t events, void *userdata) { |
e14c2802 LP |
2918 | PathSpec *p = userdata; |
2919 | Service *s; | |
2920 | ||
2921 | assert(p); | |
2922 | ||
2923 | s = SERVICE(p->unit); | |
3a111838 MS |
2924 | |
2925 | assert(s); | |
2926 | assert(fd >= 0); | |
3742095b | 2927 | assert(IN_SET(s->state, SERVICE_START, SERVICE_START_POST)); |
3a111838 | 2928 | assert(s->pid_file_pathspec); |
57020a3a | 2929 | assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd)); |
3a111838 | 2930 | |
f2341e0a | 2931 | log_unit_debug(UNIT(s), "inotify event"); |
3a111838 | 2932 | |
e14c2802 | 2933 | if (path_spec_fd_event(p, events) < 0) |
3a111838 MS |
2934 | goto fail; |
2935 | ||
2936 | if (service_retry_pid_file(s) == 0) | |
718db961 | 2937 | return 0; |
3a111838 MS |
2938 | |
2939 | if (service_watch_pid_file(s) < 0) | |
2940 | goto fail; | |
2941 | ||
718db961 LP |
2942 | return 0; |
2943 | ||
3a111838 MS |
2944 | fail: |
2945 | service_unwatch_pid_file(s); | |
f42806df | 2946 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
718db961 | 2947 | return 0; |
3a111838 MS |
2948 | } |
2949 | ||
a911bb9a LP |
2950 | static void service_notify_cgroup_empty_event(Unit *u) { |
2951 | Service *s = SERVICE(u); | |
2952 | ||
2953 | assert(u); | |
2954 | ||
f2341e0a | 2955 | log_unit_debug(u, "cgroup is empty"); |
a911bb9a LP |
2956 | |
2957 | switch (s->state) { | |
2958 | ||
2959 | /* Waiting for SIGCHLD is usually more interesting, | |
2960 | * because it includes return codes/signals. Which is | |
2961 | * why we ignore the cgroup events for most cases, | |
2962 | * except when we don't know pid which to expect the | |
2963 | * SIGCHLD for. */ | |
2964 | ||
2965 | case SERVICE_START: | |
3c751b1b LP |
2966 | if (s->type == SERVICE_NOTIFY && |
2967 | main_pid_good(s) == 0 && | |
2968 | control_pid_good(s) == 0) { | |
3d474ef7 | 2969 | /* No chance of getting a ready notification anymore */ |
c3fda31d | 2970 | service_enter_stop_post(s, SERVICE_FAILURE_PROTOCOL); |
71e529fc JW |
2971 | break; |
2972 | } | |
2973 | ||
4831981d | 2974 | _fallthrough_; |
71e529fc | 2975 | case SERVICE_START_POST: |
3c751b1b LP |
2976 | if (s->pid_file_pathspec && |
2977 | main_pid_good(s) == 0 && | |
2978 | control_pid_good(s) == 0) { | |
2979 | ||
3d474ef7 | 2980 | /* Give up hoping for the daemon to write its PID file */ |
f2341e0a | 2981 | log_unit_warning(u, "Daemon never wrote its PID file. Failing."); |
8bb2d17d | 2982 | |
a911bb9a LP |
2983 | service_unwatch_pid_file(s); |
2984 | if (s->state == SERVICE_START) | |
c3fda31d | 2985 | service_enter_stop_post(s, SERVICE_FAILURE_PROTOCOL); |
a911bb9a | 2986 | else |
c35755fb | 2987 | service_enter_stop(s, SERVICE_FAILURE_PROTOCOL); |
a911bb9a LP |
2988 | } |
2989 | break; | |
2990 | ||
2991 | case SERVICE_RUNNING: | |
2992 | /* service_enter_running() will figure out what to do */ | |
2993 | service_enter_running(s, SERVICE_SUCCESS); | |
2994 | break; | |
2995 | ||
db2cb23b | 2996 | case SERVICE_STOP_SIGABRT: |
a911bb9a LP |
2997 | case SERVICE_STOP_SIGTERM: |
2998 | case SERVICE_STOP_SIGKILL: | |
2999 | ||
b13ddbbc | 3000 | if (main_pid_good(s) <= 0 && control_pid_good(s) <= 0) |
a911bb9a LP |
3001 | service_enter_stop_post(s, SERVICE_SUCCESS); |
3002 | ||
3003 | break; | |
3004 | ||
3005 | case SERVICE_STOP_POST: | |
3006 | case SERVICE_FINAL_SIGTERM: | |
3007 | case SERVICE_FINAL_SIGKILL: | |
b13ddbbc | 3008 | if (main_pid_good(s) <= 0 && control_pid_good(s) <= 0) |
a911bb9a LP |
3009 | service_enter_dead(s, SERVICE_SUCCESS, true); |
3010 | ||
3011 | break; | |
3012 | ||
3013 | default: | |
3014 | ; | |
3015 | } | |
3016 | } | |
3017 | ||
87f0e418 | 3018 | static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
5cdabc8d | 3019 | bool notify_dbus = true; |
87f0e418 | 3020 | Service *s = SERVICE(u); |
f42806df | 3021 | ServiceResult f; |
5cb5a6ff LP |
3022 | |
3023 | assert(s); | |
034c6ed7 LP |
3024 | assert(pid >= 0); |
3025 | ||
1f0958f6 | 3026 | if (is_clean_exit(code, status, s->type == SERVICE_ONESHOT ? EXIT_CLEAN_COMMAND : EXIT_CLEAN_DAEMON, &s->success_status)) |
f42806df LP |
3027 | f = SERVICE_SUCCESS; |
3028 | else if (code == CLD_EXITED) | |
3029 | f = SERVICE_FAILURE_EXIT_CODE; | |
3030 | else if (code == CLD_KILLED) | |
3031 | f = SERVICE_FAILURE_SIGNAL; | |
3032 | else if (code == CLD_DUMPED) | |
3033 | f = SERVICE_FAILURE_CORE_DUMP; | |
d06dacd0 | 3034 | else |
cfc4eb4c | 3035 | assert_not_reached("Unknown code"); |
034c6ed7 LP |
3036 | |
3037 | if (s->main_pid == pid) { | |
db01f8b3 MS |
3038 | /* Forking services may occasionally move to a new PID. |
3039 | * As long as they update the PID file before exiting the old | |
3040 | * PID, they're fine. */ | |
db256aab | 3041 | if (service_load_pid_file(s, false) > 0) |
db01f8b3 | 3042 | return; |
034c6ed7 | 3043 | |
034c6ed7 | 3044 | s->main_pid = 0; |
6ea832a2 | 3045 | exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status); |
034c6ed7 | 3046 | |
867b3b7d | 3047 | if (s->main_command) { |
fbeefb45 LP |
3048 | /* If this is not a forking service than the |
3049 | * main process got started and hence we copy | |
3050 | * the exit status so that it is recorded both | |
3051 | * as main and as control process exit | |
3052 | * status */ | |
3053 | ||
867b3b7d | 3054 | s->main_command->exec_status = s->main_exec_status; |
b708e7ce | 3055 | |
3ed0cd26 | 3056 | if (s->main_command->flags & EXEC_COMMAND_IGNORE_FAILURE) |
f42806df | 3057 | f = SERVICE_SUCCESS; |
fbeefb45 LP |
3058 | } else if (s->exec_command[SERVICE_EXEC_START]) { |
3059 | ||
3060 | /* If this is a forked process, then we should | |
3061 | * ignore the return value if this was | |
3062 | * configured for the starter process */ | |
3063 | ||
3ed0cd26 | 3064 | if (s->exec_command[SERVICE_EXEC_START]->flags & EXEC_COMMAND_IGNORE_FAILURE) |
fbeefb45 | 3065 | f = SERVICE_SUCCESS; |
034c6ed7 LP |
3066 | } |
3067 | ||
5368222d LP |
3068 | /* When this is a successful exit, let's log about the exit code on DEBUG level. If this is a failure |
3069 | * and the process exited on its own via exit(), then let's make this a NOTICE, under the assumption | |
3070 | * that the service already logged the reason at a higher log level on its own. However, if the service | |
3071 | * died due to a signal, then it most likely didn't say anything about any reason, hence let's raise | |
3072 | * our log level to WARNING then. */ | |
3073 | ||
3074 | log_struct(f == SERVICE_SUCCESS ? LOG_DEBUG : | |
3075 | (code == CLD_EXITED ? LOG_NOTICE : LOG_WARNING), | |
f2341e0a LP |
3076 | LOG_UNIT_MESSAGE(u, "Main process exited, code=%s, status=%i/%s", |
3077 | sigchld_code_to_string(code), status, | |
e2cc6eca LP |
3078 | strna(code == CLD_EXITED |
3079 | ? exit_status_to_string(status, EXIT_STATUS_FULL) | |
3080 | : signal_to_string(status))), | |
f2341e0a LP |
3081 | "EXIT_CODE=%s", sigchld_code_to_string(code), |
3082 | "EXIT_STATUS=%i", status, | |
ba360bb0 | 3083 | LOG_UNIT_ID(u), |
f1c50bec | 3084 | LOG_UNIT_INVOCATION_ID(u), |
f2341e0a | 3085 | NULL); |
f42806df | 3086 | |
a0fef983 | 3087 | if (s->result == SERVICE_SUCCESS) |
f42806df | 3088 | s->result = f; |
034c6ed7 | 3089 | |
867b3b7d LP |
3090 | if (s->main_command && |
3091 | s->main_command->command_next && | |
b58aeb70 | 3092 | s->type == SERVICE_ONESHOT && |
f42806df | 3093 | f == SERVICE_SUCCESS) { |
034c6ed7 | 3094 | |
34e9ba66 LP |
3095 | /* There is another command to * |
3096 | * execute, so let's do that. */ | |
034c6ed7 | 3097 | |
f2341e0a | 3098 | log_unit_debug(u, "Running next main command for state %s.", service_state_to_string(s->state)); |
f42806df | 3099 | service_run_next_main(s); |
034c6ed7 | 3100 | |
34e9ba66 LP |
3101 | } else { |
3102 | ||
3103 | /* The service exited, so the service is officially | |
3104 | * gone. */ | |
867b3b7d | 3105 | s->main_command = NULL; |
34e9ba66 LP |
3106 | |
3107 | switch (s->state) { | |
3108 | ||
3109 | case SERVICE_START_POST: | |
3110 | case SERVICE_RELOAD: | |
3111 | case SERVICE_STOP: | |
3112 | /* Need to wait until the operation is | |
3113 | * done */ | |
c4653a4d | 3114 | break; |
7d55e835 | 3115 | |
34e9ba66 LP |
3116 | case SERVICE_START: |
3117 | if (s->type == SERVICE_ONESHOT) { | |
3118 | /* This was our main goal, so let's go on */ | |
f42806df | 3119 | if (f == SERVICE_SUCCESS) |
34e9ba66 LP |
3120 | service_enter_start_post(s); |
3121 | else | |
c3fda31d | 3122 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
34e9ba66 | 3123 | break; |
3d474ef7 JW |
3124 | } else if (s->type == SERVICE_NOTIFY) { |
3125 | /* Only enter running through a notification, so that the | |
3126 | * SERVICE_START state signifies that no ready notification | |
3127 | * has been received */ | |
3128 | if (f != SERVICE_SUCCESS) | |
c3fda31d | 3129 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
df66b93f JW |
3130 | else if (!s->remain_after_exit || s->notify_access == NOTIFY_MAIN) |
3131 | /* The service has never been and will never be active */ | |
c3fda31d | 3132 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_PROTOCOL); |
3d474ef7 | 3133 | break; |
34e9ba66 | 3134 | } |
034c6ed7 | 3135 | |
4831981d | 3136 | _fallthrough_; |
34e9ba66 | 3137 | case SERVICE_RUNNING: |
f42806df | 3138 | service_enter_running(s, f); |
34e9ba66 | 3139 | break; |
034c6ed7 | 3140 | |
db2cb23b | 3141 | case SERVICE_STOP_SIGABRT: |
34e9ba66 LP |
3142 | case SERVICE_STOP_SIGTERM: |
3143 | case SERVICE_STOP_SIGKILL: | |
5cb5a6ff | 3144 | |
b13ddbbc | 3145 | if (control_pid_good(s) <= 0) |
f42806df | 3146 | service_enter_stop_post(s, f); |
5cb5a6ff | 3147 | |
34e9ba66 LP |
3148 | /* If there is still a control process, wait for that first */ |
3149 | break; | |
3150 | ||
bf108e55 LP |
3151 | case SERVICE_STOP_POST: |
3152 | case SERVICE_FINAL_SIGTERM: | |
3153 | case SERVICE_FINAL_SIGKILL: | |
3154 | ||
b13ddbbc | 3155 | if (control_pid_good(s) <= 0) |
bf108e55 LP |
3156 | service_enter_dead(s, f, true); |
3157 | break; | |
3158 | ||
34e9ba66 LP |
3159 | default: |
3160 | assert_not_reached("Uh, main process died at wrong time."); | |
3161 | } | |
034c6ed7 | 3162 | } |
5cb5a6ff | 3163 | |
034c6ed7 | 3164 | } else if (s->control_pid == pid) { |
34e9ba66 LP |
3165 | s->control_pid = 0; |
3166 | ||
b708e7ce | 3167 | if (s->control_command) { |
8bb2d17d | 3168 | exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status); |
a16e1123 | 3169 | |
3ed0cd26 | 3170 | if (s->control_command->flags & EXEC_COMMAND_IGNORE_FAILURE) |
f42806df | 3171 | f = SERVICE_SUCCESS; |
b708e7ce LP |
3172 | } |
3173 | ||
f2341e0a LP |
3174 | log_unit_full(u, f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, 0, |
3175 | "Control process exited, code=%s status=%i", | |
3176 | sigchld_code_to_string(code), status); | |
f42806df | 3177 | |
a0fef983 | 3178 | if (s->result == SERVICE_SUCCESS) |
f42806df | 3179 | s->result = f; |
034c6ed7 | 3180 | |
34e9ba66 LP |
3181 | if (s->control_command && |
3182 | s->control_command->command_next && | |
f42806df | 3183 | f == SERVICE_SUCCESS) { |
034c6ed7 LP |
3184 | |
3185 | /* There is another command to * | |
3186 | * execute, so let's do that. */ | |
3187 | ||
f2341e0a | 3188 | log_unit_debug(u, "Running next control command for state %s.", service_state_to_string(s->state)); |
f42806df | 3189 | service_run_next_control(s); |
034c6ed7 | 3190 | |
80876c20 | 3191 | } else { |
034c6ed7 LP |
3192 | /* No further commands for this step, so let's |
3193 | * figure out what to do next */ | |
3194 | ||
a16e1123 LP |
3195 | s->control_command = NULL; |
3196 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
3197 | ||
f2341e0a | 3198 | log_unit_debug(u, "Got final SIGCHLD for state %s.", service_state_to_string(s->state)); |
bd982a8b | 3199 | |
034c6ed7 LP |
3200 | switch (s->state) { |
3201 | ||
3202 | case SERVICE_START_PRE: | |
f42806df | 3203 | if (f == SERVICE_SUCCESS) |
034c6ed7 LP |
3204 | service_enter_start(s); |
3205 | else | |
c3fda31d | 3206 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
034c6ed7 LP |
3207 | break; |
3208 | ||
3209 | case SERVICE_START: | |
bfba3256 LP |
3210 | if (s->type != SERVICE_FORKING) |
3211 | /* Maybe spurious event due to a reload that changed the type? */ | |
3212 | break; | |
034c6ed7 | 3213 | |
f42806df | 3214 | if (f != SERVICE_SUCCESS) { |
c3fda31d | 3215 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
3a111838 MS |
3216 | break; |
3217 | } | |
034c6ed7 | 3218 | |
3a111838 | 3219 | if (s->pid_file) { |
f42806df LP |
3220 | bool has_start_post; |
3221 | int r; | |
3222 | ||
3a111838 MS |
3223 | /* Let's try to load the pid file here if we can. |
3224 | * The PID file might actually be created by a START_POST | |
3225 | * script. In that case don't worry if the loading fails. */ | |
f42806df LP |
3226 | |
3227 | has_start_post = !!s->exec_command[SERVICE_EXEC_START_POST]; | |
3228 | r = service_load_pid_file(s, !has_start_post); | |
3a111838 MS |
3229 | if (!has_start_post && r < 0) { |
3230 | r = service_demand_pid_file(s); | |
b13ddbbc | 3231 | if (r < 0 || cgroup_good(s) == 0) |
c3fda31d | 3232 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_PROTOCOL); |
3a111838 MS |
3233 | break; |
3234 | } | |
034c6ed7 | 3235 | } else |
783e05d6 | 3236 | service_search_main_pid(s); |
034c6ed7 | 3237 | |
3a111838 | 3238 | service_enter_start_post(s); |
034c6ed7 LP |
3239 | break; |
3240 | ||
3241 | case SERVICE_START_POST: | |
f42806df | 3242 | if (f != SERVICE_SUCCESS) { |
ce359e98 | 3243 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
2096e009 | 3244 | break; |
034c6ed7 LP |
3245 | } |
3246 | ||
2096e009 | 3247 | if (s->pid_file) { |
f42806df LP |
3248 | int r; |
3249 | ||
3250 | r = service_load_pid_file(s, true); | |
2096e009 MS |
3251 | if (r < 0) { |
3252 | r = service_demand_pid_file(s); | |
b13ddbbc | 3253 | if (r < 0 || cgroup_good(s) == 0) |
c35755fb | 3254 | service_enter_stop(s, SERVICE_FAILURE_PROTOCOL); |
2096e009 MS |
3255 | break; |
3256 | } | |
3257 | } else | |
783e05d6 | 3258 | service_search_main_pid(s); |
2096e009 | 3259 | |
f42806df | 3260 | service_enter_running(s, SERVICE_SUCCESS); |
3185a36b | 3261 | break; |
034c6ed7 LP |
3262 | |
3263 | case SERVICE_RELOAD: | |
7236ce6e ZJS |
3264 | if (f == SERVICE_SUCCESS) |
3265 | if (service_load_pid_file(s, true) < 0) | |
3266 | service_search_main_pid(s); | |
3185a36b | 3267 | |
f42806df LP |
3268 | s->reload_result = f; |
3269 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
3270 | break; |
3271 | ||
3272 | case SERVICE_STOP: | |
f42806df | 3273 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
034c6ed7 LP |
3274 | break; |
3275 | ||
db2cb23b | 3276 | case SERVICE_STOP_SIGABRT: |
034c6ed7 LP |
3277 | case SERVICE_STOP_SIGTERM: |
3278 | case SERVICE_STOP_SIGKILL: | |
3279 | if (main_pid_good(s) <= 0) | |
f42806df | 3280 | service_enter_stop_post(s, f); |
034c6ed7 LP |
3281 | |
3282 | /* If there is still a service | |
3283 | * process around, wait until | |
3284 | * that one quit, too */ | |
3285 | break; | |
3286 | ||
3287 | case SERVICE_STOP_POST: | |
3288 | case SERVICE_FINAL_SIGTERM: | |
3289 | case SERVICE_FINAL_SIGKILL: | |
bf108e55 LP |
3290 | if (main_pid_good(s) <= 0) |
3291 | service_enter_dead(s, f, true); | |
034c6ed7 LP |
3292 | break; |
3293 | ||
3294 | default: | |
3295 | assert_not_reached("Uh, control process died at wrong time."); | |
3296 | } | |
3297 | } | |
5cdabc8d LP |
3298 | } else /* Neither control nor main PID? If so, don't notify about anything */ |
3299 | notify_dbus = false; | |
c4e2ceae LP |
3300 | |
3301 | /* Notify clients about changed exit status */ | |
5cdabc8d LP |
3302 | if (notify_dbus) |
3303 | unit_add_to_dbus_queue(u); | |
a911bb9a | 3304 | |
11aef522 LP |
3305 | /* If we get a SIGCHLD event for one of the processes we were interested in, then we look for others to watch, |
3306 | * under the assumption that we'll sooner or later get a SIGCHLD for them, as the original process we watched | |
3307 | * was probably the parent of them, and they are hence now our children. */ | |
a911bb9a LP |
3308 | unit_tidy_watch_pids(u, s->main_pid, s->control_pid); |
3309 | unit_watch_all_pids(u); | |
3310 | ||
11aef522 LP |
3311 | /* If the PID set is empty now, then let's check if the cgroup is empty too and finish off the unit. */ |
3312 | unit_synthesize_cgroup_empty_event(u); | |
034c6ed7 LP |
3313 | } |
3314 | ||
718db961 LP |
3315 | static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
3316 | Service *s = SERVICE(userdata); | |
034c6ed7 LP |
3317 | |
3318 | assert(s); | |
718db961 | 3319 | assert(source == s->timer_event_source); |
034c6ed7 LP |
3320 | |
3321 | switch (s->state) { | |
3322 | ||
3323 | case SERVICE_START_PRE: | |
3324 | case SERVICE_START: | |
f2341e0a | 3325 | log_unit_warning(UNIT(s), "%s operation timed out. Terminating.", s->state == SERVICE_START ? "Start" : "Start-pre"); |
c3fda31d | 3326 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
80876c20 LP |
3327 | break; |
3328 | ||
034c6ed7 | 3329 | case SERVICE_START_POST: |
f2341e0a | 3330 | log_unit_warning(UNIT(s), "Start-post operation timed out. Stopping."); |
ce359e98 | 3331 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3332 | break; |
3333 | ||
36c16a7c LP |
3334 | case SERVICE_RUNNING: |
3335 | log_unit_warning(UNIT(s), "Service reached runtime time limit. Stopping."); | |
3336 | service_enter_stop(s, SERVICE_FAILURE_TIMEOUT); | |
3337 | break; | |
3338 | ||
e2f3b44c | 3339 | case SERVICE_RELOAD: |
089b64d5 | 3340 | log_unit_warning(UNIT(s), "Reload operation timed out. Killing reload process."); |
e9a4f676 | 3341 | service_kill_control_process(s); |
f42806df LP |
3342 | s->reload_result = SERVICE_FAILURE_TIMEOUT; |
3343 | service_enter_running(s, SERVICE_SUCCESS); | |
e2f3b44c LP |
3344 | break; |
3345 | ||
034c6ed7 | 3346 | case SERVICE_STOP: |
f2341e0a | 3347 | log_unit_warning(UNIT(s), "Stopping timed out. Terminating."); |
f42806df | 3348 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3349 | break; |
3350 | ||
db2cb23b | 3351 | case SERVICE_STOP_SIGABRT: |
f2341e0a | 3352 | log_unit_warning(UNIT(s), "State 'stop-sigabrt' timed out. Terminating."); |
2ab2ab7b | 3353 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
db2cb23b UTL |
3354 | break; |
3355 | ||
034c6ed7 | 3356 | case SERVICE_STOP_SIGTERM: |
4819ff03 | 3357 | if (s->kill_context.send_sigkill) { |
f2341e0a | 3358 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Killing."); |
f42806df | 3359 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 3360 | } else { |
f2341e0a | 3361 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Skipping SIGKILL."); |
f42806df | 3362 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
ba035df2 LP |
3363 | } |
3364 | ||
034c6ed7 LP |
3365 | break; |
3366 | ||
3367 | case SERVICE_STOP_SIGKILL: | |
35b8ca3a | 3368 | /* Uh, we sent a SIGKILL and it is still not gone? |
034c6ed7 LP |
3369 | * Must be something we cannot kill, so let's just be |
3370 | * weirded out and continue */ | |
3371 | ||
f2341e0a | 3372 | log_unit_warning(UNIT(s), "Processes still around after SIGKILL. Ignoring."); |
f42806df | 3373 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3374 | break; |
3375 | ||
3376 | case SERVICE_STOP_POST: | |
f2341e0a | 3377 | log_unit_warning(UNIT(s), "State 'stop-post' timed out. Terminating."); |
f42806df | 3378 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3379 | break; |
3380 | ||
3381 | case SERVICE_FINAL_SIGTERM: | |
4819ff03 | 3382 | if (s->kill_context.send_sigkill) { |
f2341e0a | 3383 | log_unit_warning(UNIT(s), "State 'stop-final-sigterm' timed out. Killing."); |
f42806df | 3384 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 3385 | } else { |
f2341e0a | 3386 | log_unit_warning(UNIT(s), "State 'stop-final-sigterm' timed out. Skipping SIGKILL. Entering failed mode."); |
f42806df | 3387 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false); |
ba035df2 LP |
3388 | } |
3389 | ||
034c6ed7 LP |
3390 | break; |
3391 | ||
3392 | case SERVICE_FINAL_SIGKILL: | |
f2341e0a | 3393 | log_unit_warning(UNIT(s), "Processes still around after final SIGKILL. Entering failed mode."); |
f42806df | 3394 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true); |
034c6ed7 LP |
3395 | break; |
3396 | ||
3397 | case SERVICE_AUTO_RESTART: | |
f2341e0a | 3398 | log_unit_info(UNIT(s), |
ef417cfd | 3399 | s->restart_usec > 0 ? |
f2341e0a LP |
3400 | "Service hold-off time over, scheduling restart." : |
3401 | "Service has no hold-off time, scheduling restart."); | |
034c6ed7 LP |
3402 | service_enter_restart(s); |
3403 | break; | |
3404 | ||
3405 | default: | |
3406 | assert_not_reached("Timeout at wrong time."); | |
3407 | } | |
718db961 LP |
3408 | |
3409 | return 0; | |
3410 | } | |
3411 | ||
3412 | static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata) { | |
3413 | Service *s = SERVICE(userdata); | |
a7850c7d | 3414 | char t[FORMAT_TIMESPAN_MAX]; |
2787d83c | 3415 | usec_t watchdog_usec; |
718db961 LP |
3416 | |
3417 | assert(s); | |
3418 | assert(source == s->watchdog_event_source); | |
3419 | ||
2787d83c M |
3420 | watchdog_usec = service_get_watchdog_usec(s); |
3421 | ||
2a12e32e JK |
3422 | if (UNIT(s)->manager->service_watchdogs) { |
3423 | log_unit_error(UNIT(s), "Watchdog timeout (limit %s)!", | |
3424 | format_timespan(t, sizeof(t), watchdog_usec, 1)); | |
8bb2d17d | 3425 | |
2a12e32e JK |
3426 | service_enter_signal(s, SERVICE_STOP_SIGABRT, SERVICE_FAILURE_WATCHDOG); |
3427 | } else | |
3428 | log_unit_warning(UNIT(s), "Watchdog disabled! Ignoring watchdog timeout (limit %s)!", | |
3429 | format_timespan(t, sizeof(t), watchdog_usec, 1)); | |
842129f5 | 3430 | |
718db961 | 3431 | return 0; |
5cb5a6ff LP |
3432 | } |
3433 | ||
e3285237 LP |
3434 | static bool service_notify_message_authorized(Service *s, pid_t pid, char **tags, FDSet *fds) { |
3435 | assert(s); | |
8c47c732 | 3436 | |
c952c6ec | 3437 | if (s->notify_access == NOTIFY_NONE) { |
e3285237 LP |
3438 | log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception is disabled.", pid); |
3439 | return false; | |
3440 | } | |
3441 | ||
3442 | if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) { | |
336c6e46 | 3443 | if (s->main_pid != 0) |
e3285237 | 3444 | log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception only permitted for main PID "PID_FMT, pid, s->main_pid); |
336c6e46 | 3445 | else |
e3285237 LP |
3446 | log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception only permitted for main PID which is currently not known", pid); |
3447 | ||
3448 | return false; | |
3449 | } | |
3450 | ||
3451 | if (s->notify_access == NOTIFY_EXEC && pid != s->main_pid && pid != s->control_pid) { | |
6375bd20 | 3452 | if (s->main_pid != 0 && s->control_pid != 0) |
e3285237 | 3453 | log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception only permitted for main PID "PID_FMT" and control PID "PID_FMT, |
6375bd20 JW |
3454 | pid, s->main_pid, s->control_pid); |
3455 | else if (s->main_pid != 0) | |
e3285237 | 3456 | log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception only permitted for main PID "PID_FMT, pid, s->main_pid); |
6375bd20 | 3457 | else if (s->control_pid != 0) |
e3285237 | 3458 | log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception only permitted for control PID "PID_FMT, pid, s->control_pid); |
6375bd20 | 3459 | else |
e3285237 LP |
3460 | log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception only permitted for main PID and control PID which are currently not known", pid); |
3461 | ||
3462 | return false; | |
9711848f LP |
3463 | } |
3464 | ||
e3285237 LP |
3465 | return true; |
3466 | } | |
3467 | ||
db256aab LP |
3468 | static void service_notify_message( |
3469 | Unit *u, | |
3470 | const struct ucred *ucred, | |
3471 | char **tags, | |
3472 | FDSet *fds) { | |
3473 | ||
e3285237 LP |
3474 | Service *s = SERVICE(u); |
3475 | bool notify_dbus = false; | |
3476 | const char *e; | |
cc2b7b11 | 3477 | char **i; |
db256aab | 3478 | int r; |
e3285237 LP |
3479 | |
3480 | assert(u); | |
db256aab | 3481 | assert(ucred); |
e3285237 | 3482 | |
db256aab | 3483 | if (!service_notify_message_authorized(SERVICE(u), ucred->pid, tags, fds)) |
e3285237 LP |
3484 | return; |
3485 | ||
f1d34068 | 3486 | if (DEBUG_LOGGING) { |
9711848f LP |
3487 | _cleanup_free_ char *cc = NULL; |
3488 | ||
3489 | cc = strv_join(tags, ", "); | |
db256aab | 3490 | log_unit_debug(u, "Got notification message from PID "PID_FMT" (%s)", ucred->pid, isempty(cc) ? "n/a" : cc); |
9711848f | 3491 | } |
c952c6ec | 3492 | |
8c47c732 | 3493 | /* Interpret MAINPID= */ |
28849dba | 3494 | e = strv_find_startswith(tags, "MAINPID="); |
5e56b378 | 3495 | if (e && IN_SET(s->state, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) { |
db256aab LP |
3496 | pid_t new_main_pid; |
3497 | ||
3498 | if (parse_pid(e, &new_main_pid) < 0) | |
3499 | log_unit_warning(u, "Failed to parse MAINPID= field in notification message, ignoring: %s", e); | |
3500 | else if (!s->main_pid_known || new_main_pid != s->main_pid) { | |
3501 | ||
3502 | r = service_is_suitable_main_pid(s, new_main_pid, LOG_WARNING); | |
3503 | if (r == 0) { | |
3504 | /* The new main PID is a bit suspicous, which is OK if the sender is privileged. */ | |
3505 | ||
3506 | if (ucred->uid == 0) { | |
3507 | log_unit_debug(u, "New main PID "PID_FMT" does not belong to service, but we'll accept it as the request to change it came from a privileged process.", new_main_pid); | |
3508 | r = 1; | |
3509 | } else | |
3510 | log_unit_debug(u, "New main PID "PID_FMT" does not belong to service, refusing.", new_main_pid); | |
3511 | } | |
3512 | if (r > 0) { | |
3513 | service_set_main_pid(s, new_main_pid); | |
3514 | unit_watch_pid(UNIT(s), new_main_pid); | |
3515 | notify_dbus = true; | |
3516 | } | |
8c47c732 LP |
3517 | } |
3518 | } | |
3519 | ||
cc2b7b11 LP |
3520 | /* Interpret READY=/STOPPING=/RELOADING=. Last one wins. */ |
3521 | STRV_FOREACH_BACKWARDS(i, tags) { | |
308d72dc | 3522 | |
cc2b7b11 LP |
3523 | if (streq(*i, "READY=1")) { |
3524 | s->notify_state = NOTIFY_READY; | |
308d72dc | 3525 | |
cc2b7b11 LP |
3526 | /* Type=notify services inform us about completed |
3527 | * initialization with READY=1 */ | |
3528 | if (s->type == SERVICE_NOTIFY && s->state == SERVICE_START) | |
3529 | service_enter_start_post(s); | |
308d72dc | 3530 | |
cc2b7b11 LP |
3531 | /* Sending READY=1 while we are reloading informs us |
3532 | * that the reloading is complete */ | |
3533 | if (s->state == SERVICE_RELOAD && s->control_pid == 0) | |
3534 | service_enter_running(s, SERVICE_SUCCESS); | |
308d72dc | 3535 | |
cc2b7b11 LP |
3536 | notify_dbus = true; |
3537 | break; | |
308d72dc | 3538 | |
cc2b7b11 LP |
3539 | } else if (streq(*i, "RELOADING=1")) { |
3540 | s->notify_state = NOTIFY_RELOADING; | |
308d72dc | 3541 | |
cc2b7b11 LP |
3542 | if (s->state == SERVICE_RUNNING) |
3543 | service_enter_reload_by_notify(s); | |
308d72dc | 3544 | |
cc2b7b11 LP |
3545 | notify_dbus = true; |
3546 | break; | |
308d72dc | 3547 | |
cc2b7b11 LP |
3548 | } else if (streq(*i, "STOPPING=1")) { |
3549 | s->notify_state = NOTIFY_STOPPING; | |
308d72dc | 3550 | |
cc2b7b11 LP |
3551 | if (s->state == SERVICE_RUNNING) |
3552 | service_enter_stop_by_notify(s); | |
308d72dc | 3553 | |
cc2b7b11 LP |
3554 | notify_dbus = true; |
3555 | break; | |
3556 | } | |
8c47c732 LP |
3557 | } |
3558 | ||
3559 | /* Interpret STATUS= */ | |
28849dba | 3560 | e = strv_find_startswith(tags, "STATUS="); |
7f110ff9 | 3561 | if (e) { |
28849dba | 3562 | _cleanup_free_ char *t = NULL; |
8c47c732 | 3563 | |
28849dba LP |
3564 | if (!isempty(e)) { |
3565 | if (!utf8_is_valid(e)) | |
f2341e0a | 3566 | log_unit_warning(u, "Status message in notification message is not UTF-8 clean."); |
28849dba | 3567 | else { |
28849dba LP |
3568 | t = strdup(e); |
3569 | if (!t) | |
3570 | log_oom(); | |
3a2776bc | 3571 | } |
28849dba | 3572 | } |
8c47c732 | 3573 | |
30b5275a | 3574 | if (!streq_ptr(s->status_text, t)) { |
3b319885 | 3575 | free_and_replace(s->status_text, t); |
30b5275a | 3576 | notify_dbus = true; |
28849dba | 3577 | } |
8c47c732 | 3578 | } |
842129f5 | 3579 | |
4774e357 | 3580 | /* Interpret ERRNO= */ |
28849dba | 3581 | e = strv_find_startswith(tags, "ERRNO="); |
4774e357 MAA |
3582 | if (e) { |
3583 | int status_errno; | |
3584 | ||
2fa40742 LP |
3585 | status_errno = parse_errno(e); |
3586 | if (status_errno < 0) | |
3587 | log_unit_warning_errno(u, status_errno, | |
3588 | "Failed to parse ERRNO= field in notification message: %s", e); | |
3589 | else if (s->status_errno != status_errno) { | |
3590 | s->status_errno = status_errno; | |
3591 | notify_dbus = true; | |
4774e357 MAA |
3592 | } |
3593 | } | |
3594 | ||
a327431b DB |
3595 | /* Interpret EXTEND_TIMEOUT= */ |
3596 | e = strv_find_startswith(tags, "EXTEND_TIMEOUT_USEC="); | |
3597 | if (e) { | |
3598 | usec_t extend_timeout_usec; | |
3599 | if (safe_atou64(e, &extend_timeout_usec) < 0) | |
3600 | log_unit_warning(u, "Failed to parse EXTEND_TIMEOUT_USEC=%s", e); | |
3601 | else | |
3602 | service_extend_timeout(s, extend_timeout_usec); | |
3603 | } | |
3604 | ||
6f285378 | 3605 | /* Interpret WATCHDOG= */ |
1f6b4113 | 3606 | if (strv_find(tags, "WATCHDOG=1")) |
842129f5 | 3607 | service_reset_watchdog(s); |
c4e2ceae | 3608 | |
c45d11cb LP |
3609 | e = strv_find_startswith(tags, "WATCHDOG_USEC="); |
3610 | if (e) { | |
3611 | usec_t watchdog_override_usec; | |
3612 | if (safe_atou64(e, &watchdog_override_usec) < 0) | |
3613 | log_unit_warning(u, "Failed to parse WATCHDOG_USEC=%s", e); | |
3614 | else | |
3615 | service_reset_watchdog_timeout(s, watchdog_override_usec); | |
3616 | } | |
3617 | ||
e78ee06d LP |
3618 | /* Process FD store messages. Either FDSTOREREMOVE=1 for removal, or FDSTORE=1 for addition. In both cases, |
3619 | * process FDNAME= for picking the file descriptor name to use. Note that FDNAME= is required when removing | |
3620 | * fds, but optional when pushing in new fds, for compatibility reasons. */ | |
3621 | if (strv_find(tags, "FDSTOREREMOVE=1")) { | |
3622 | const char *name; | |
3623 | ||
3624 | name = strv_find_startswith(tags, "FDNAME="); | |
3625 | if (!name || !fdname_is_valid(name)) | |
3626 | log_unit_warning(u, "FDSTOREREMOVE=1 requested, but no valid file descriptor name passed, ignoring."); | |
3627 | else | |
3628 | service_remove_fd_store(s, name); | |
3629 | ||
3630 | } else if (strv_find(tags, "FDSTORE=1")) { | |
8dd4c05b LP |
3631 | const char *name; |
3632 | ||
3633 | name = strv_find_startswith(tags, "FDNAME="); | |
3634 | if (name && !fdname_is_valid(name)) { | |
3635 | log_unit_warning(u, "Passed FDNAME= name is invalid, ignoring."); | |
3636 | name = NULL; | |
3637 | } | |
3638 | ||
e78ee06d | 3639 | (void) service_add_fd_store_set(s, fds, name); |
8dd4c05b | 3640 | } |
a354329f | 3641 | |
c4e2ceae | 3642 | /* Notify clients about changed status or main pid */ |
30b5275a LP |
3643 | if (notify_dbus) |
3644 | unit_add_to_dbus_queue(u); | |
8c47c732 LP |
3645 | } |
3646 | ||
7a7821c8 | 3647 | static int service_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 3648 | Service *s = SERVICE(u); |
7a7821c8 | 3649 | uint64_t t; |
68db7a3b ZJS |
3650 | int r; |
3651 | ||
3652 | if (!s->timer_event_source) | |
3653 | return 0; | |
3654 | ||
7a7821c8 | 3655 | r = sd_event_source_get_time(s->timer_event_source, &t); |
68db7a3b ZJS |
3656 | if (r < 0) |
3657 | return r; | |
7a7821c8 LP |
3658 | if (t == USEC_INFINITY) |
3659 | return 0; | |
68db7a3b | 3660 | |
7a7821c8 | 3661 | *timeout = t; |
68db7a3b ZJS |
3662 | return 1; |
3663 | } | |
3664 | ||
05e343b7 LP |
3665 | static void service_bus_name_owner_change( |
3666 | Unit *u, | |
3667 | const char *name, | |
3668 | const char *old_owner, | |
3669 | const char *new_owner) { | |
3670 | ||
3671 | Service *s = SERVICE(u); | |
718db961 | 3672 | int r; |
05e343b7 LP |
3673 | |
3674 | assert(s); | |
3675 | assert(name); | |
3676 | ||
3677 | assert(streq(s->bus_name, name)); | |
3678 | assert(old_owner || new_owner); | |
3679 | ||
3680 | if (old_owner && new_owner) | |
f2341e0a | 3681 | log_unit_debug(u, "D-Bus name %s changed owner from %s to %s", name, old_owner, new_owner); |
05e343b7 | 3682 | else if (old_owner) |
f2341e0a | 3683 | log_unit_debug(u, "D-Bus name %s no longer registered by %s", name, old_owner); |
05e343b7 | 3684 | else |
f2341e0a | 3685 | log_unit_debug(u, "D-Bus name %s now registered by %s", name, new_owner); |
05e343b7 LP |
3686 | |
3687 | s->bus_name_good = !!new_owner; | |
3688 | ||
d8ccf5fd DM |
3689 | /* Track the current owner, so we can reconstruct changes after a daemon reload */ |
3690 | r = free_and_strdup(&s->bus_name_owner, new_owner); | |
3691 | if (r < 0) { | |
3692 | log_unit_error_errno(u, r, "Unable to set new bus name owner %s: %m", new_owner); | |
3693 | return; | |
3694 | } | |
3695 | ||
05e343b7 LP |
3696 | if (s->type == SERVICE_DBUS) { |
3697 | ||
3698 | /* service_enter_running() will figure out what to | |
3699 | * do */ | |
3700 | if (s->state == SERVICE_RUNNING) | |
f42806df | 3701 | service_enter_running(s, SERVICE_SUCCESS); |
05e343b7 LP |
3702 | else if (s->state == SERVICE_START && new_owner) |
3703 | service_enter_start_post(s); | |
3704 | ||
3705 | } else if (new_owner && | |
3706 | s->main_pid <= 0 && | |
a6951a50 LP |
3707 | IN_SET(s->state, |
3708 | SERVICE_START, | |
3709 | SERVICE_START_POST, | |
3710 | SERVICE_RUNNING, | |
3711 | SERVICE_RELOAD)) { | |
05e343b7 | 3712 | |
4afd3348 | 3713 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; |
718db961 | 3714 | pid_t pid; |
05e343b7 | 3715 | |
718db961 | 3716 | /* Try to acquire PID from bus service */ |
05e343b7 | 3717 | |
056f95d0 | 3718 | r = sd_bus_get_name_creds(u->manager->api_bus, name, SD_BUS_CREDS_PID, &creds); |
5b12334d LP |
3719 | if (r >= 0) |
3720 | r = sd_bus_creds_get_pid(creds, &pid); | |
718db961 | 3721 | if (r >= 0) { |
7c102d60 | 3722 | log_unit_debug(u, "D-Bus name %s is now owned by process " PID_FMT, name, pid); |
05e343b7 | 3723 | |
718db961 LP |
3724 | service_set_main_pid(s, pid); |
3725 | unit_watch_pid(UNIT(s), pid); | |
3726 | } | |
7400b9d2 | 3727 | } |
05e343b7 LP |
3728 | } |
3729 | ||
16115b0a | 3730 | int service_set_socket_fd(Service *s, int fd, Socket *sock, bool selinux_context_net) { |
79a98c60 LP |
3731 | _cleanup_free_ char *peer = NULL; |
3732 | int r; | |
57020a3a | 3733 | |
4f2d528d LP |
3734 | assert(s); |
3735 | assert(fd >= 0); | |
3736 | ||
7f2fbbff LP |
3737 | /* This is called by the socket code when instantiating a new service for a stream socket and the socket needs |
3738 | * to be configured. We take ownership of the passed fd on success. */ | |
4f2d528d | 3739 | |
1124fe6f | 3740 | if (UNIT(s)->load_state != UNIT_LOADED) |
4f2d528d LP |
3741 | return -EINVAL; |
3742 | ||
3743 | if (s->socket_fd >= 0) | |
3744 | return -EBUSY; | |
3745 | ||
3746 | if (s->state != SERVICE_DEAD) | |
3747 | return -EAGAIN; | |
3748 | ||
366b7db4 | 3749 | if (getpeername_pretty(fd, true, &peer) >= 0) { |
79a98c60 LP |
3750 | |
3751 | if (UNIT(s)->description) { | |
3752 | _cleanup_free_ char *a; | |
3753 | ||
605405c6 | 3754 | a = strjoin(UNIT(s)->description, " (", peer, ")"); |
79a98c60 LP |
3755 | if (!a) |
3756 | return -ENOMEM; | |
3757 | ||
3758 | r = unit_set_description(UNIT(s), a); | |
3759 | } else | |
3760 | r = unit_set_description(UNIT(s), peer); | |
3761 | ||
3762 | if (r < 0) | |
3763 | return r; | |
3764 | } | |
3765 | ||
eef85c4a | 3766 | r = unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false, UNIT_DEPENDENCY_IMPLICIT); |
7f2fbbff LP |
3767 | if (r < 0) |
3768 | return r; | |
3769 | ||
4f2d528d | 3770 | s->socket_fd = fd; |
16115b0a | 3771 | s->socket_fd_selinux_context_net = selinux_context_net; |
6cf6bbc2 | 3772 | |
57020a3a | 3773 | unit_ref_set(&s->accept_socket, UNIT(sock)); |
7f2fbbff | 3774 | return 0; |
4f2d528d LP |
3775 | } |
3776 | ||
fdf20a31 | 3777 | static void service_reset_failed(Unit *u) { |
5632e374 LP |
3778 | Service *s = SERVICE(u); |
3779 | ||
3780 | assert(s); | |
3781 | ||
fdf20a31 | 3782 | if (s->state == SERVICE_FAILED) |
5632e374 LP |
3783 | service_set_state(s, SERVICE_DEAD); |
3784 | ||
f42806df LP |
3785 | s->result = SERVICE_SUCCESS; |
3786 | s->reload_result = SERVICE_SUCCESS; | |
7a0019d3 LP |
3787 | s->n_restarts = 0; |
3788 | s->flush_n_restarts = false; | |
5632e374 LP |
3789 | } |
3790 | ||
718db961 | 3791 | static int service_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
8a0867d6 | 3792 | Service *s = SERVICE(u); |
41efeaec | 3793 | |
a6951a50 LP |
3794 | assert(s); |
3795 | ||
814cc562 | 3796 | return unit_kill_common(u, who, signo, s->main_pid, s->control_pid, error); |
8a0867d6 LP |
3797 | } |
3798 | ||
291d565a LP |
3799 | static int service_main_pid(Unit *u) { |
3800 | Service *s = SERVICE(u); | |
3801 | ||
3802 | assert(s); | |
3803 | ||
3804 | return s->main_pid; | |
3805 | } | |
3806 | ||
3807 | static int service_control_pid(Unit *u) { | |
3808 | Service *s = SERVICE(u); | |
3809 | ||
3810 | assert(s); | |
3811 | ||
3812 | return s->control_pid; | |
3813 | } | |
3814 | ||
bb2c7685 LP |
3815 | static bool service_needs_console(Unit *u) { |
3816 | Service *s = SERVICE(u); | |
3817 | ||
3818 | assert(s); | |
3819 | ||
3820 | /* We provide our own implementation of this here, instead of relying of the generic implementation | |
3821 | * unit_needs_console() provides, since we want to return false if we are in SERVICE_EXITED state. */ | |
3822 | ||
3823 | if (!exec_context_may_touch_console(&s->exec_context)) | |
3824 | return false; | |
3825 | ||
3826 | return IN_SET(s->state, | |
3827 | SERVICE_START_PRE, | |
3828 | SERVICE_START, | |
3829 | SERVICE_START_POST, | |
3830 | SERVICE_RUNNING, | |
3831 | SERVICE_RELOAD, | |
3832 | SERVICE_STOP, | |
3833 | SERVICE_STOP_SIGABRT, | |
3834 | SERVICE_STOP_SIGTERM, | |
3835 | SERVICE_STOP_SIGKILL, | |
3836 | SERVICE_STOP_POST, | |
3837 | SERVICE_FINAL_SIGTERM, | |
3838 | SERVICE_FINAL_SIGKILL); | |
3839 | } | |
3840 | ||
94f04347 | 3841 | static const char* const service_restart_table[_SERVICE_RESTART_MAX] = { |
525ee6f4 LP |
3842 | [SERVICE_RESTART_NO] = "no", |
3843 | [SERVICE_RESTART_ON_SUCCESS] = "on-success", | |
50caaedb | 3844 | [SERVICE_RESTART_ON_FAILURE] = "on-failure", |
6cfe2fde | 3845 | [SERVICE_RESTART_ON_ABNORMAL] = "on-abnormal", |
dc99a976 | 3846 | [SERVICE_RESTART_ON_WATCHDOG] = "on-watchdog", |
50caaedb | 3847 | [SERVICE_RESTART_ON_ABORT] = "on-abort", |
6cfe2fde | 3848 | [SERVICE_RESTART_ALWAYS] = "always", |
94f04347 LP |
3849 | }; |
3850 | ||
3851 | DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart); | |
3852 | ||
3853 | static const char* const service_type_table[_SERVICE_TYPE_MAX] = { | |
94f04347 | 3854 | [SERVICE_SIMPLE] = "simple", |
0d624a78 | 3855 | [SERVICE_FORKING] = "forking", |
34e9ba66 | 3856 | [SERVICE_ONESHOT] = "oneshot", |
8c47c732 | 3857 | [SERVICE_DBUS] = "dbus", |
f2b68789 LP |
3858 | [SERVICE_NOTIFY] = "notify", |
3859 | [SERVICE_IDLE] = "idle" | |
94f04347 LP |
3860 | }; |
3861 | ||
3862 | DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType); | |
3863 | ||
e537352b | 3864 | static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = { |
94f04347 LP |
3865 | [SERVICE_EXEC_START_PRE] = "ExecStartPre", |
3866 | [SERVICE_EXEC_START] = "ExecStart", | |
3867 | [SERVICE_EXEC_START_POST] = "ExecStartPost", | |
3868 | [SERVICE_EXEC_RELOAD] = "ExecReload", | |
3869 | [SERVICE_EXEC_STOP] = "ExecStop", | |
3870 | [SERVICE_EXEC_STOP_POST] = "ExecStopPost", | |
3871 | }; | |
3872 | ||
3873 | DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand); | |
3874 | ||
308d72dc LP |
3875 | static const char* const notify_state_table[_NOTIFY_STATE_MAX] = { |
3876 | [NOTIFY_UNKNOWN] = "unknown", | |
3877 | [NOTIFY_READY] = "ready", | |
3878 | [NOTIFY_RELOADING] = "reloading", | |
3879 | [NOTIFY_STOPPING] = "stopping", | |
3880 | }; | |
3881 | ||
3882 | DEFINE_STRING_TABLE_LOOKUP(notify_state, NotifyState); | |
3883 | ||
f42806df LP |
3884 | static const char* const service_result_table[_SERVICE_RESULT_MAX] = { |
3885 | [SERVICE_SUCCESS] = "success", | |
3886 | [SERVICE_FAILURE_RESOURCES] = "resources", | |
c35755fb | 3887 | [SERVICE_FAILURE_PROTOCOL] = "protocol", |
f42806df LP |
3888 | [SERVICE_FAILURE_TIMEOUT] = "timeout", |
3889 | [SERVICE_FAILURE_EXIT_CODE] = "exit-code", | |
3890 | [SERVICE_FAILURE_SIGNAL] = "signal", | |
bb242b7b | 3891 | [SERVICE_FAILURE_CORE_DUMP] = "core-dump", |
8d1b002a | 3892 | [SERVICE_FAILURE_WATCHDOG] = "watchdog", |
07299350 | 3893 | [SERVICE_FAILURE_START_LIMIT_HIT] = "start-limit-hit", |
f42806df LP |
3894 | }; |
3895 | ||
3896 | DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult); | |
3897 | ||
87f0e418 | 3898 | const UnitVTable service_vtable = { |
7d17cfbc | 3899 | .object_size = sizeof(Service), |
718db961 LP |
3900 | .exec_context_offset = offsetof(Service, exec_context), |
3901 | .cgroup_context_offset = offsetof(Service, cgroup_context), | |
3902 | .kill_context_offset = offsetof(Service, kill_context), | |
613b411c | 3903 | .exec_runtime_offset = offsetof(Service, exec_runtime), |
29206d46 | 3904 | .dynamic_creds_offset = offsetof(Service, dynamic_creds), |
3ef63c31 | 3905 | |
f975e971 LP |
3906 | .sections = |
3907 | "Unit\0" | |
3908 | "Service\0" | |
3909 | "Install\0", | |
4ad49000 | 3910 | .private_section = "Service", |
71645aca | 3911 | |
034c6ed7 LP |
3912 | .init = service_init, |
3913 | .done = service_done, | |
a16e1123 | 3914 | .load = service_load, |
a354329f | 3915 | .release_resources = service_release_resources, |
a16e1123 LP |
3916 | |
3917 | .coldplug = service_coldplug, | |
034c6ed7 | 3918 | |
5cb5a6ff LP |
3919 | .dump = service_dump, |
3920 | ||
3921 | .start = service_start, | |
3922 | .stop = service_stop, | |
3923 | .reload = service_reload, | |
3924 | ||
034c6ed7 LP |
3925 | .can_reload = service_can_reload, |
3926 | ||
8a0867d6 LP |
3927 | .kill = service_kill, |
3928 | ||
a16e1123 LP |
3929 | .serialize = service_serialize, |
3930 | .deserialize_item = service_deserialize_item, | |
3931 | ||
5cb5a6ff | 3932 | .active_state = service_active_state, |
10a94420 | 3933 | .sub_state_to_string = service_sub_state_to_string, |
5cb5a6ff | 3934 | |
deb4e708 MK |
3935 | .will_restart = service_will_restart, |
3936 | ||
f2f725e5 | 3937 | .may_gc = service_may_gc, |
701cc384 | 3938 | |
034c6ed7 | 3939 | .sigchld_event = service_sigchld_event, |
2c4104f0 | 3940 | |
fdf20a31 | 3941 | .reset_failed = service_reset_failed, |
5632e374 | 3942 | |
4ad49000 | 3943 | .notify_cgroup_empty = service_notify_cgroup_empty_event, |
8c47c732 | 3944 | .notify_message = service_notify_message, |
8e274523 | 3945 | |
291d565a LP |
3946 | .main_pid = service_main_pid, |
3947 | .control_pid = service_control_pid, | |
3948 | ||
05e343b7 | 3949 | .bus_name_owner_change = service_bus_name_owner_change, |
05e343b7 | 3950 | |
718db961 | 3951 | .bus_vtable = bus_service_vtable, |
74c964d3 LP |
3952 | .bus_set_property = bus_service_set_property, |
3953 | .bus_commit_properties = bus_service_commit_properties, | |
4139c1b2 | 3954 | |
68db7a3b | 3955 | .get_timeout = service_get_timeout, |
bb2c7685 | 3956 | .needs_console = service_needs_console, |
718db961 LP |
3957 | .can_transient = true, |
3958 | ||
c6918296 MS |
3959 | .status_message_formats = { |
3960 | .starting_stopping = { | |
3961 | [0] = "Starting %s...", | |
3962 | [1] = "Stopping %s...", | |
3963 | }, | |
3964 | .finished_start_job = { | |
3965 | [JOB_DONE] = "Started %s.", | |
3966 | [JOB_FAILED] = "Failed to start %s.", | |
c6918296 MS |
3967 | }, |
3968 | .finished_stop_job = { | |
3969 | [JOB_DONE] = "Stopped %s.", | |
3970 | [JOB_FAILED] = "Stopped (with error) %s.", | |
c6918296 MS |
3971 | }, |
3972 | }, | |
5cb5a6ff | 3973 | }; |