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Commit | Line | Data |
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a7334b09 LP |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2010 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
7 | under the terms of the GNU Lesser General Public License as published by |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
9 | (at your option) any later version. |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 14 | Lesser General Public License for more details. |
a7334b09 | 15 | |
5430f7f2 | 16 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
18 | ***/ | |
19 | ||
5cb5a6ff | 20 | #include <errno.h> |
034c6ed7 | 21 | #include <signal.h> |
2c4104f0 | 22 | #include <unistd.h> |
5cb5a6ff | 23 | |
7a0019d3 LP |
24 | #include "sd-messages.h" |
25 | ||
b5efdb8a | 26 | #include "alloc-util.h" |
574634bc | 27 | #include "async.h" |
4f5dd394 LP |
28 | #include "bus-error.h" |
29 | #include "bus-kernel.h" | |
30 | #include "bus-util.h" | |
4139c1b2 | 31 | #include "dbus-service.h" |
f6a6225e | 32 | #include "def.h" |
4d1a6904 | 33 | #include "env-util.h" |
4f5dd394 LP |
34 | #include "escape.h" |
35 | #include "exit-status.h" | |
3ffd4af2 | 36 | #include "fd-util.h" |
a5c32cff | 37 | #include "fileio.h" |
f97b34a6 | 38 | #include "format-util.h" |
f4f15635 | 39 | #include "fs-util.h" |
4f5dd394 LP |
40 | #include "load-dropin.h" |
41 | #include "load-fragment.h" | |
42 | #include "log.h" | |
43 | #include "manager.h" | |
6bedfcbb | 44 | #include "parse-util.h" |
4f5dd394 | 45 | #include "path-util.h" |
0b452006 | 46 | #include "process-util.h" |
3ffd4af2 | 47 | #include "service.h" |
24882e06 | 48 | #include "signal-util.h" |
4f5dd394 | 49 | #include "special.h" |
e266c068 | 50 | #include "stdio-util.h" |
8b43440b | 51 | #include "string-table.h" |
07630cea | 52 | #include "string-util.h" |
4f5dd394 LP |
53 | #include "strv.h" |
54 | #include "unit-name.h" | |
4f5dd394 LP |
55 | #include "unit.h" |
56 | #include "utf8.h" | |
57 | #include "util.h" | |
034c6ed7 | 58 | |
acbb0225 | 59 | static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = { |
87f0e418 LP |
60 | [SERVICE_DEAD] = UNIT_INACTIVE, |
61 | [SERVICE_START_PRE] = UNIT_ACTIVATING, | |
62 | [SERVICE_START] = UNIT_ACTIVATING, | |
63 | [SERVICE_START_POST] = UNIT_ACTIVATING, | |
64 | [SERVICE_RUNNING] = UNIT_ACTIVE, | |
80876c20 | 65 | [SERVICE_EXITED] = UNIT_ACTIVE, |
032ff4af | 66 | [SERVICE_RELOAD] = UNIT_RELOADING, |
87f0e418 | 67 | [SERVICE_STOP] = UNIT_DEACTIVATING, |
db2cb23b | 68 | [SERVICE_STOP_SIGABRT] = UNIT_DEACTIVATING, |
87f0e418 LP |
69 | [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, |
70 | [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
71 | [SERVICE_STOP_POST] = UNIT_DEACTIVATING, | |
72 | [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, | |
73 | [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
fdf20a31 | 74 | [SERVICE_FAILED] = UNIT_FAILED, |
6124958c | 75 | [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING |
034c6ed7 | 76 | }; |
5cb5a6ff | 77 | |
e056b01d LP |
78 | /* For Type=idle we never want to delay any other jobs, hence we |
79 | * consider idle jobs active as soon as we start working on them */ | |
80 | static const UnitActiveState state_translation_table_idle[_SERVICE_STATE_MAX] = { | |
81 | [SERVICE_DEAD] = UNIT_INACTIVE, | |
82 | [SERVICE_START_PRE] = UNIT_ACTIVE, | |
83 | [SERVICE_START] = UNIT_ACTIVE, | |
84 | [SERVICE_START_POST] = UNIT_ACTIVE, | |
85 | [SERVICE_RUNNING] = UNIT_ACTIVE, | |
86 | [SERVICE_EXITED] = UNIT_ACTIVE, | |
87 | [SERVICE_RELOAD] = UNIT_RELOADING, | |
88 | [SERVICE_STOP] = UNIT_DEACTIVATING, | |
db2cb23b | 89 | [SERVICE_STOP_SIGABRT] = UNIT_DEACTIVATING, |
e056b01d LP |
90 | [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, |
91 | [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
92 | [SERVICE_STOP_POST] = UNIT_DEACTIVATING, | |
93 | [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, | |
94 | [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
95 | [SERVICE_FAILED] = UNIT_FAILED, | |
96 | [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING | |
97 | }; | |
98 | ||
718db961 LP |
99 | static int service_dispatch_io(sd_event_source *source, int fd, uint32_t events, void *userdata); |
100 | static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); | |
101 | static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata); | |
102 | ||
842129f5 | 103 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f); |
308d72dc | 104 | static void service_enter_reload_by_notify(Service *s); |
842129f5 | 105 | |
a16e1123 LP |
106 | static void service_init(Unit *u) { |
107 | Service *s = SERVICE(u); | |
108 | ||
109 | assert(u); | |
ac155bb8 | 110 | assert(u->load_state == UNIT_STUB); |
a16e1123 | 111 | |
1f19a534 OS |
112 | s->timeout_start_usec = u->manager->default_timeout_start_usec; |
113 | s->timeout_stop_usec = u->manager->default_timeout_stop_usec; | |
114 | s->restart_usec = u->manager->default_restart_usec; | |
36c16a7c | 115 | s->runtime_max_usec = USEC_INFINITY; |
0b86feac | 116 | s->type = _SERVICE_TYPE_INVALID; |
a16e1123 | 117 | s->socket_fd = -1; |
a34ceba6 | 118 | s->stdin_fd = s->stdout_fd = s->stderr_fd = -1; |
3185a36b | 119 | s->guess_main_pid = true; |
a16e1123 | 120 | |
a16e1123 LP |
121 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; |
122 | } | |
123 | ||
5e94833f LP |
124 | static void service_unwatch_control_pid(Service *s) { |
125 | assert(s); | |
126 | ||
127 | if (s->control_pid <= 0) | |
128 | return; | |
129 | ||
130 | unit_unwatch_pid(UNIT(s), s->control_pid); | |
131 | s->control_pid = 0; | |
132 | } | |
133 | ||
134 | static void service_unwatch_main_pid(Service *s) { | |
135 | assert(s); | |
136 | ||
137 | if (s->main_pid <= 0) | |
138 | return; | |
139 | ||
140 | unit_unwatch_pid(UNIT(s), s->main_pid); | |
141 | s->main_pid = 0; | |
142 | } | |
143 | ||
3e52541e MS |
144 | static void service_unwatch_pid_file(Service *s) { |
145 | if (!s->pid_file_pathspec) | |
146 | return; | |
147 | ||
f2341e0a | 148 | log_unit_debug(UNIT(s), "Stopping watch for PID file %s", s->pid_file_pathspec->path); |
718db961 | 149 | path_spec_unwatch(s->pid_file_pathspec); |
3e52541e | 150 | path_spec_done(s->pid_file_pathspec); |
a1e58e8e | 151 | s->pid_file_pathspec = mfree(s->pid_file_pathspec); |
3e52541e MS |
152 | } |
153 | ||
5925dd3c | 154 | static int service_set_main_pid(Service *s, pid_t pid) { |
e55224ca LP |
155 | pid_t ppid; |
156 | ||
5925dd3c LP |
157 | assert(s); |
158 | ||
159 | if (pid <= 1) | |
160 | return -EINVAL; | |
161 | ||
df0ff127 | 162 | if (pid == getpid_cached()) |
5925dd3c LP |
163 | return -EINVAL; |
164 | ||
7400b9d2 LP |
165 | if (s->main_pid == pid && s->main_pid_known) |
166 | return 0; | |
167 | ||
168 | if (s->main_pid != pid) { | |
169 | service_unwatch_main_pid(s); | |
170 | exec_status_start(&s->main_exec_status, pid); | |
171 | } | |
41efeaec | 172 | |
6dfa5494 LP |
173 | s->main_pid = pid; |
174 | s->main_pid_known = true; | |
175 | ||
df0ff127 | 176 | if (get_process_ppid(pid, &ppid) >= 0 && ppid != getpid_cached()) { |
f2341e0a | 177 | 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 |
178 | s->main_pid_alien = true; |
179 | } else | |
180 | s->main_pid_alien = false; | |
5925dd3c LP |
181 | |
182 | return 0; | |
183 | } | |
184 | ||
3e7a1f50 | 185 | void service_close_socket_fd(Service *s) { |
4f2d528d LP |
186 | assert(s); |
187 | ||
5cc3985e | 188 | /* Undo the effect of service_set_socket_fd(). */ |
4f2d528d | 189 | |
5cc3985e | 190 | s->socket_fd = asynchronous_close(s->socket_fd); |
6cf6bbc2 | 191 | |
5cc3985e LP |
192 | if (UNIT_ISSET(s->accept_socket)) { |
193 | socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket))); | |
194 | unit_ref_unset(&s->accept_socket); | |
195 | } | |
6cf6bbc2 LP |
196 | } |
197 | ||
a6927d7f MO |
198 | static void service_stop_watchdog(Service *s) { |
199 | assert(s); | |
200 | ||
718db961 | 201 | s->watchdog_event_source = sd_event_source_unref(s->watchdog_event_source); |
842129f5 | 202 | s->watchdog_timestamp = DUAL_TIMESTAMP_NULL; |
a6927d7f MO |
203 | } |
204 | ||
2787d83c M |
205 | static usec_t service_get_watchdog_usec(Service *s) { |
206 | assert(s); | |
207 | ||
208 | if (s->watchdog_override_enable) | |
209 | return s->watchdog_override_usec; | |
210 | else | |
211 | return s->watchdog_usec; | |
212 | } | |
213 | ||
842129f5 | 214 | static void service_start_watchdog(Service *s) { |
bb242b7b | 215 | int r; |
2787d83c | 216 | usec_t watchdog_usec; |
bb242b7b MO |
217 | |
218 | assert(s); | |
219 | ||
2787d83c | 220 | watchdog_usec = service_get_watchdog_usec(s); |
4c701096 | 221 | if (IN_SET(watchdog_usec, 0, USEC_INFINITY)) |
bb242b7b MO |
222 | return; |
223 | ||
718db961 | 224 | if (s->watchdog_event_source) { |
2787d83c | 225 | r = sd_event_source_set_time(s->watchdog_event_source, usec_add(s->watchdog_timestamp.monotonic, watchdog_usec)); |
718db961 | 226 | if (r < 0) { |
f2341e0a | 227 | log_unit_warning_errno(UNIT(s), r, "Failed to reset watchdog timer: %m"); |
718db961 LP |
228 | return; |
229 | } | |
230 | ||
842129f5 | 231 | r = sd_event_source_set_enabled(s->watchdog_event_source, SD_EVENT_ONESHOT); |
c4ef3317 | 232 | } else { |
6a0f1f6d LP |
233 | r = sd_event_add_time( |
234 | UNIT(s)->manager->event, | |
235 | &s->watchdog_event_source, | |
236 | CLOCK_MONOTONIC, | |
2787d83c | 237 | usec_add(s->watchdog_timestamp.monotonic, watchdog_usec), 0, |
6a0f1f6d | 238 | service_dispatch_watchdog, s); |
c4ef3317 | 239 | if (r < 0) { |
f2341e0a | 240 | log_unit_warning_errno(UNIT(s), r, "Failed to add watchdog timer: %m"); |
c4ef3317 LP |
241 | return; |
242 | } | |
243 | ||
7dfbe2e3 TG |
244 | (void) sd_event_source_set_description(s->watchdog_event_source, "service-watchdog"); |
245 | ||
c4ef3317 LP |
246 | /* Let's process everything else which might be a sign |
247 | * of living before we consider a service died. */ | |
248 | r = sd_event_source_set_priority(s->watchdog_event_source, SD_EVENT_PRIORITY_IDLE); | |
249 | } | |
718db961 | 250 | |
bb242b7b | 251 | if (r < 0) |
f2341e0a | 252 | log_unit_warning_errno(UNIT(s), r, "Failed to install watchdog timer: %m"); |
bb242b7b MO |
253 | } |
254 | ||
a6927d7f MO |
255 | static void service_reset_watchdog(Service *s) { |
256 | assert(s); | |
257 | ||
258 | dual_timestamp_get(&s->watchdog_timestamp); | |
842129f5 | 259 | service_start_watchdog(s); |
a6927d7f MO |
260 | } |
261 | ||
2787d83c M |
262 | static void service_reset_watchdog_timeout(Service *s, usec_t watchdog_override_usec) { |
263 | assert(s); | |
264 | ||
265 | s->watchdog_override_enable = true; | |
266 | s->watchdog_override_usec = watchdog_override_usec; | |
267 | service_reset_watchdog(s); | |
268 | ||
269 | log_unit_debug(UNIT(s), "watchdog_usec="USEC_FMT, s->watchdog_usec); | |
270 | log_unit_debug(UNIT(s), "watchdog_override_usec="USEC_FMT, s->watchdog_override_usec); | |
271 | } | |
272 | ||
a354329f LP |
273 | static void service_fd_store_unlink(ServiceFDStore *fs) { |
274 | ||
275 | if (!fs) | |
276 | return; | |
277 | ||
278 | if (fs->service) { | |
279 | assert(fs->service->n_fd_store > 0); | |
280 | LIST_REMOVE(fd_store, fs->service->fd_store, fs); | |
281 | fs->service->n_fd_store--; | |
282 | } | |
283 | ||
284 | if (fs->event_source) { | |
285 | sd_event_source_set_enabled(fs->event_source, SD_EVENT_OFF); | |
286 | sd_event_source_unref(fs->event_source); | |
287 | } | |
288 | ||
8dd4c05b | 289 | free(fs->fdname); |
a354329f LP |
290 | safe_close(fs->fd); |
291 | free(fs); | |
292 | } | |
293 | ||
f0bfbfac ZJS |
294 | static void service_release_fd_store(Service *s) { |
295 | assert(s); | |
296 | ||
7eb2a8a1 LP |
297 | if (s->n_keep_fd_store > 0) |
298 | return; | |
299 | ||
f0bfbfac ZJS |
300 | log_unit_debug(UNIT(s), "Releasing all stored fds"); |
301 | while (s->fd_store) | |
302 | service_fd_store_unlink(s->fd_store); | |
303 | ||
304 | assert(s->n_fd_store == 0); | |
305 | } | |
306 | ||
7eb2a8a1 | 307 | static void service_release_resources(Unit *u) { |
a354329f LP |
308 | Service *s = SERVICE(u); |
309 | ||
310 | assert(s); | |
311 | ||
a34ceba6 | 312 | if (!s->fd_store && s->stdin_fd < 0 && s->stdout_fd < 0 && s->stderr_fd < 0) |
a354329f LP |
313 | return; |
314 | ||
f0bfbfac | 315 | log_unit_debug(u, "Releasing resources."); |
a354329f | 316 | |
a34ceba6 LP |
317 | s->stdin_fd = safe_close(s->stdin_fd); |
318 | s->stdout_fd = safe_close(s->stdout_fd); | |
319 | s->stderr_fd = safe_close(s->stderr_fd); | |
320 | ||
7eb2a8a1 | 321 | service_release_fd_store(s); |
a354329f LP |
322 | } |
323 | ||
87f0e418 LP |
324 | static void service_done(Unit *u) { |
325 | Service *s = SERVICE(u); | |
44d8db9e LP |
326 | |
327 | assert(s); | |
328 | ||
a1e58e8e LP |
329 | s->pid_file = mfree(s->pid_file); |
330 | s->status_text = mfree(s->status_text); | |
efe6e7d3 | 331 | |
613b411c | 332 | s->exec_runtime = exec_runtime_unref(s->exec_runtime); |
e537352b | 333 | exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); |
44d8db9e | 334 | s->control_command = NULL; |
867b3b7d | 335 | s->main_command = NULL; |
44d8db9e | 336 | |
29206d46 LP |
337 | dynamic_creds_unref(&s->dynamic_creds); |
338 | ||
37520c1b LP |
339 | exit_status_set_free(&s->restart_prevent_status); |
340 | exit_status_set_free(&s->restart_force_status); | |
341 | exit_status_set_free(&s->success_status); | |
96342de6 | 342 | |
44d8db9e LP |
343 | /* This will leak a process, but at least no memory or any of |
344 | * our resources */ | |
5e94833f LP |
345 | service_unwatch_main_pid(s); |
346 | service_unwatch_control_pid(s); | |
3e52541e | 347 | service_unwatch_pid_file(s); |
44d8db9e | 348 | |
05e343b7 | 349 | if (s->bus_name) { |
ac155bb8 | 350 | unit_unwatch_bus_name(u, s->bus_name); |
a1e58e8e | 351 | s->bus_name = mfree(s->bus_name); |
05e343b7 LP |
352 | } |
353 | ||
d8ccf5fd DM |
354 | s->bus_name_owner = mfree(s->bus_name_owner); |
355 | ||
4f2d528d | 356 | service_close_socket_fd(s); |
9d565427 | 357 | s->peer = socket_peer_unref(s->peer); |
4f2d528d | 358 | |
57020a3a | 359 | unit_ref_unset(&s->accept_socket); |
f976f3f6 | 360 | |
bb242b7b MO |
361 | service_stop_watchdog(s); |
362 | ||
718db961 | 363 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
a354329f | 364 | |
7eb2a8a1 | 365 | service_release_resources(u); |
718db961 LP |
366 | } |
367 | ||
2339fc93 LP |
368 | static int on_fd_store_io(sd_event_source *e, int fd, uint32_t revents, void *userdata) { |
369 | ServiceFDStore *fs = userdata; | |
370 | ||
371 | assert(e); | |
372 | assert(fs); | |
373 | ||
374 | /* If we get either EPOLLHUP or EPOLLERR, it's time to remove this entry from the fd store */ | |
16f70d63 ZJS |
375 | log_unit_debug(UNIT(fs->service), |
376 | "Received %s on stored fd %d (%s), closing.", | |
377 | revents & EPOLLERR ? "EPOLLERR" : "EPOLLHUP", | |
378 | fs->fd, strna(fs->fdname)); | |
2339fc93 LP |
379 | service_fd_store_unlink(fs); |
380 | return 0; | |
381 | } | |
382 | ||
8dd4c05b | 383 | static int service_add_fd_store(Service *s, int fd, const char *name) { |
2339fc93 LP |
384 | ServiceFDStore *fs; |
385 | int r; | |
386 | ||
9021ff17 ZJS |
387 | /* fd is always consumed if we return >= 0 */ |
388 | ||
2339fc93 LP |
389 | assert(s); |
390 | assert(fd >= 0); | |
391 | ||
392 | if (s->n_fd_store >= s->n_fd_store_max) | |
b0924635 ZJS |
393 | return -EXFULL; /* Our store is full. |
394 | * Use this errno rather than E[NM]FILE to distinguish from | |
395 | * the case where systemd itself hits the file limit. */ | |
2339fc93 LP |
396 | |
397 | LIST_FOREACH(fd_store, fs, s->fd_store) { | |
398 | r = same_fd(fs->fd, fd); | |
399 | if (r < 0) | |
400 | return r; | |
401 | if (r > 0) { | |
2339fc93 | 402 | safe_close(fd); |
9021ff17 | 403 | return 0; /* fd already included */ |
2339fc93 LP |
404 | } |
405 | } | |
406 | ||
407 | fs = new0(ServiceFDStore, 1); | |
408 | if (!fs) | |
409 | return -ENOMEM; | |
410 | ||
411 | fs->fd = fd; | |
412 | fs->service = s; | |
8dd4c05b | 413 | fs->fdname = strdup(name ?: "stored"); |
17dec0f7 | 414 | if (!fs->fdname) { |
415 | free(fs); | |
8dd4c05b | 416 | return -ENOMEM; |
17dec0f7 | 417 | } |
2339fc93 LP |
418 | |
419 | r = sd_event_add_io(UNIT(s)->manager->event, &fs->event_source, fd, 0, on_fd_store_io, fs); | |
3ceb72e5 | 420 | if (r < 0 && r != -EPERM) { /* EPERM indicates fds that aren't pollable, which is OK */ |
8dd4c05b | 421 | free(fs->fdname); |
2339fc93 LP |
422 | free(fs); |
423 | return r; | |
3ceb72e5 LP |
424 | } else if (r >= 0) |
425 | (void) sd_event_source_set_description(fs->event_source, "service-fd-store"); | |
7dfbe2e3 | 426 | |
2339fc93 LP |
427 | LIST_PREPEND(fd_store, s->fd_store, fs); |
428 | s->n_fd_store++; | |
429 | ||
9021ff17 | 430 | return 1; /* fd newly stored */ |
2339fc93 LP |
431 | } |
432 | ||
8dd4c05b | 433 | static int service_add_fd_store_set(Service *s, FDSet *fds, const char *name) { |
2339fc93 LP |
434 | int r; |
435 | ||
436 | assert(s); | |
437 | ||
b0924635 | 438 | while (fdset_size(fds) > 0) { |
2339fc93 LP |
439 | _cleanup_close_ int fd = -1; |
440 | ||
441 | fd = fdset_steal_first(fds); | |
442 | if (fd < 0) | |
443 | break; | |
444 | ||
8dd4c05b | 445 | r = service_add_fd_store(s, fd, name); |
b0924635 ZJS |
446 | if (r == -EXFULL) |
447 | return log_unit_warning_errno(UNIT(s), r, | |
448 | "Cannot store more fds than FileDescriptorStoreMax=%u, closing remaining.", | |
449 | s->n_fd_store_max); | |
2339fc93 | 450 | if (r < 0) |
b0924635 | 451 | return log_unit_error_errno(UNIT(s), r, "Failed to add fd to store: %m"); |
9021ff17 | 452 | if (r > 0) |
16f70d63 | 453 | log_unit_debug(UNIT(s), "Added fd %u (%s) to fd store.", fd, strna(name)); |
9021ff17 | 454 | fd = -1; |
2339fc93 LP |
455 | } |
456 | ||
2339fc93 LP |
457 | return 0; |
458 | } | |
459 | ||
718db961 LP |
460 | static int service_arm_timer(Service *s, usec_t usec) { |
461 | int r; | |
462 | ||
463 | assert(s); | |
464 | ||
718db961 | 465 | if (s->timer_event_source) { |
36c16a7c | 466 | r = sd_event_source_set_time(s->timer_event_source, usec); |
718db961 LP |
467 | if (r < 0) |
468 | return r; | |
469 | ||
470 | return sd_event_source_set_enabled(s->timer_event_source, SD_EVENT_ONESHOT); | |
471 | } | |
472 | ||
36c16a7c LP |
473 | if (usec == USEC_INFINITY) |
474 | return 0; | |
475 | ||
7dfbe2e3 | 476 | r = sd_event_add_time( |
6a0f1f6d LP |
477 | UNIT(s)->manager->event, |
478 | &s->timer_event_source, | |
479 | CLOCK_MONOTONIC, | |
36c16a7c | 480 | usec, 0, |
6a0f1f6d | 481 | service_dispatch_timer, s); |
7dfbe2e3 TG |
482 | if (r < 0) |
483 | return r; | |
484 | ||
485 | (void) sd_event_source_set_description(s->timer_event_source, "service-timer"); | |
486 | ||
487 | return 0; | |
44d8db9e LP |
488 | } |
489 | ||
243b1432 LP |
490 | static int service_verify(Service *s) { |
491 | assert(s); | |
492 | ||
1124fe6f | 493 | if (UNIT(s)->load_state != UNIT_LOADED) |
243b1432 LP |
494 | return 0; |
495 | ||
96fb8242 | 496 | if (!s->exec_command[SERVICE_EXEC_START] && !s->exec_command[SERVICE_EXEC_STOP]) { |
f2341e0a | 497 | log_unit_error(UNIT(s), "Service lacks both ExecStart= and ExecStop= setting. Refusing."); |
243b1432 LP |
498 | return -EINVAL; |
499 | } | |
500 | ||
96fb8242 | 501 | if (s->type != SERVICE_ONESHOT && !s->exec_command[SERVICE_EXEC_START]) { |
f2341e0a | 502 | log_unit_error(UNIT(s), "Service has no ExecStart= setting, which is only allowed for Type=oneshot services. Refusing."); |
96fb8242 LP |
503 | return -EINVAL; |
504 | } | |
505 | ||
506 | if (!s->remain_after_exit && !s->exec_command[SERVICE_EXEC_START]) { | |
f2341e0a | 507 | log_unit_error(UNIT(s), "Service has no ExecStart= setting, which is only allowed for RemainAfterExit=yes services. Refusing."); |
96fb8242 LP |
508 | return -EINVAL; |
509 | } | |
510 | ||
511 | if (s->type != SERVICE_ONESHOT && s->exec_command[SERVICE_EXEC_START]->command_next) { | |
f2341e0a | 512 | log_unit_error(UNIT(s), "Service has more than one ExecStart= setting, which is only allowed for Type=oneshot services. Refusing."); |
6cf6bbc2 LP |
513 | return -EINVAL; |
514 | } | |
515 | ||
b0693d30 | 516 | if (s->type == SERVICE_ONESHOT && s->restart != SERVICE_RESTART_NO) { |
f2341e0a | 517 | log_unit_error(UNIT(s), "Service has Restart= setting other than no, which isn't allowed for Type=oneshot services. Refusing."); |
37520c1b LP |
518 | return -EINVAL; |
519 | } | |
520 | ||
55ebf98c | 521 | if (s->type == SERVICE_ONESHOT && !exit_status_set_is_empty(&s->restart_force_status)) { |
f2341e0a | 522 | log_unit_error(UNIT(s), "Service has RestartForceStatus= set, which isn't allowed for Type=oneshot services. Refusing."); |
b0693d30 MW |
523 | return -EINVAL; |
524 | } | |
525 | ||
05e343b7 | 526 | if (s->type == SERVICE_DBUS && !s->bus_name) { |
f2341e0a | 527 | log_unit_error(UNIT(s), "Service is of type D-Bus but no D-Bus service name has been specified. Refusing."); |
4d0e5dbd LP |
528 | return -EINVAL; |
529 | } | |
530 | ||
7e2668c6 | 531 | if (s->bus_name && s->type != SERVICE_DBUS) |
f2341e0a | 532 | log_unit_warning(UNIT(s), "Service has a D-Bus service name specified, but is not of type dbus. Ignoring."); |
7e2668c6 | 533 | |
3742095b | 534 | if (s->exec_context.pam_name && !IN_SET(s->kill_context.kill_mode, KILL_CONTROL_GROUP, KILL_MIXED)) { |
f2341e0a | 535 | log_unit_error(UNIT(s), "Service has PAM enabled. Kill mode must be set to 'control-group' or 'mixed'. Refusing."); |
05e343b7 LP |
536 | return -EINVAL; |
537 | } | |
538 | ||
6b7e5923 PS |
539 | if (s->usb_function_descriptors && !s->usb_function_strings) |
540 | log_unit_warning(UNIT(s), "Service has USBFunctionDescriptors= setting, but no USBFunctionStrings=. Ignoring."); | |
541 | ||
542 | if (!s->usb_function_descriptors && s->usb_function_strings) | |
543 | log_unit_warning(UNIT(s), "Service has USBFunctionStrings= setting, but no USBFunctionDescriptors=. Ignoring."); | |
544 | ||
36c16a7c LP |
545 | if (s->runtime_max_usec != USEC_INFINITY && s->type == SERVICE_ONESHOT) |
546 | log_unit_warning(UNIT(s), "MaxRuntimeSec= has no effect in combination with Type=oneshot. Ignoring."); | |
547 | ||
243b1432 LP |
548 | return 0; |
549 | } | |
550 | ||
a40eb732 LP |
551 | static int service_add_default_dependencies(Service *s) { |
552 | int r; | |
553 | ||
554 | assert(s); | |
555 | ||
45f06b34 LP |
556 | if (!UNIT(s)->default_dependencies) |
557 | return 0; | |
558 | ||
a40eb732 LP |
559 | /* Add a number of automatic dependencies useful for the |
560 | * majority of services. */ | |
561 | ||
463d0d15 | 562 | if (MANAGER_IS_SYSTEM(UNIT(s)->manager)) { |
cb4c247d LP |
563 | /* First, pull in the really early boot stuff, and |
564 | * require it, so that we fail if we can't acquire | |
565 | * it. */ | |
566 | ||
eef85c4a | 567 | r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, NULL, true, UNIT_DEPENDENCY_DEFAULT); |
cb4c247d LP |
568 | if (r < 0) |
569 | return r; | |
570 | } else { | |
571 | ||
572 | /* In the --user instance there's no sysinit.target, | |
573 | * in that case require basic.target instead. */ | |
574 | ||
eef85c4a | 575 | r = unit_add_dependency_by_name(UNIT(s), UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true, UNIT_DEPENDENCY_DEFAULT); |
cb4c247d LP |
576 | if (r < 0) |
577 | return r; | |
578 | } | |
579 | ||
580 | /* Second, if the rest of the base system is in the same | |
581 | * transaction, order us after it, but do not pull it in or | |
582 | * even require it. */ | |
eef85c4a | 583 | r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_BASIC_TARGET, NULL, true, UNIT_DEPENDENCY_DEFAULT); |
fccd44ec KS |
584 | if (r < 0) |
585 | return r; | |
a40eb732 | 586 | |
cb4c247d | 587 | /* Third, add us in for normal shutdown. */ |
eef85c4a | 588 | return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true, UNIT_DEPENDENCY_DEFAULT); |
a40eb732 LP |
589 | } |
590 | ||
4dfc092a LP |
591 | static void service_fix_output(Service *s) { |
592 | assert(s); | |
593 | ||
594 | /* If nothing has been explicitly configured, patch default | |
595 | * output in. If input is socket/tty we avoid this however, | |
596 | * since in that case we want output to default to the same | |
597 | * place as we read input from. */ | |
598 | ||
599 | if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT && | |
600 | s->exec_context.std_output == EXEC_OUTPUT_INHERIT && | |
601 | s->exec_context.std_input == EXEC_INPUT_NULL) | |
1124fe6f | 602 | s->exec_context.std_error = UNIT(s)->manager->default_std_error; |
4dfc092a LP |
603 | |
604 | if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT && | |
605 | s->exec_context.std_input == EXEC_INPUT_NULL) | |
1124fe6f | 606 | s->exec_context.std_output = UNIT(s)->manager->default_std_output; |
4dfc092a LP |
607 | } |
608 | ||
45f06b34 LP |
609 | static int service_setup_bus_name(Service *s) { |
610 | int r; | |
611 | ||
612 | assert(s); | |
613 | ||
614 | if (!s->bus_name) | |
615 | return 0; | |
616 | ||
eef85c4a | 617 | r = unit_add_dependency_by_name(UNIT(s), UNIT_REQUIRES, SPECIAL_DBUS_SOCKET, NULL, true, UNIT_DEPENDENCY_FILE); |
222953e8 DR |
618 | if (r < 0) |
619 | return log_unit_error_errno(UNIT(s), r, "Failed to add dependency on " SPECIAL_DBUS_SOCKET ": %m"); | |
45f06b34 | 620 | |
a132bef0 | 621 | /* We always want to be ordered against dbus.socket if both are in the transaction. */ |
eef85c4a | 622 | r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_DBUS_SOCKET, NULL, true, UNIT_DEPENDENCY_FILE); |
45f06b34 | 623 | if (r < 0) |
92bed462 | 624 | return log_unit_error_errno(UNIT(s), r, "Failed to add dependency on " SPECIAL_DBUS_SOCKET ": %m"); |
45f06b34 LP |
625 | |
626 | r = unit_watch_bus_name(UNIT(s), s->bus_name); | |
627 | if (r == -EEXIST) | |
628 | return log_unit_error_errno(UNIT(s), r, "Two services allocated for the same bus name %s, refusing operation.", s->bus_name); | |
629 | if (r < 0) | |
630 | return log_unit_error_errno(UNIT(s), r, "Cannot watch bus name %s: %m", s->bus_name); | |
631 | ||
632 | return 0; | |
633 | } | |
634 | ||
8545f7ce LP |
635 | static int service_add_extras(Service *s) { |
636 | int r; | |
637 | ||
638 | assert(s); | |
639 | ||
640 | if (s->type == _SERVICE_TYPE_INVALID) { | |
641 | /* Figure out a type automatically */ | |
642 | if (s->bus_name) | |
643 | s->type = SERVICE_DBUS; | |
644 | else if (s->exec_command[SERVICE_EXEC_START]) | |
645 | s->type = SERVICE_SIMPLE; | |
646 | else | |
647 | s->type = SERVICE_ONESHOT; | |
648 | } | |
649 | ||
650 | /* Oneshot services have disabled start timeout by default */ | |
651 | if (s->type == SERVICE_ONESHOT && !s->start_timeout_defined) | |
36c16a7c | 652 | s->timeout_start_usec = USEC_INFINITY; |
8545f7ce LP |
653 | |
654 | service_fix_output(s); | |
655 | ||
656 | r = unit_patch_contexts(UNIT(s)); | |
657 | if (r < 0) | |
658 | return r; | |
659 | ||
660 | r = unit_add_exec_dependencies(UNIT(s), &s->exec_context); | |
661 | if (r < 0) | |
662 | return r; | |
663 | ||
d79200e2 | 664 | r = unit_set_default_slice(UNIT(s)); |
8545f7ce LP |
665 | if (r < 0) |
666 | return r; | |
667 | ||
668 | if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE) | |
669 | s->notify_access = NOTIFY_MAIN; | |
670 | ||
671 | if (s->watchdog_usec > 0 && s->notify_access == NOTIFY_NONE) | |
672 | s->notify_access = NOTIFY_MAIN; | |
673 | ||
45f06b34 LP |
674 | r = service_add_default_dependencies(s); |
675 | if (r < 0) | |
676 | return r; | |
8545f7ce | 677 | |
45f06b34 LP |
678 | r = service_setup_bus_name(s); |
679 | if (r < 0) | |
680 | return r; | |
8545f7ce LP |
681 | |
682 | return 0; | |
683 | } | |
684 | ||
e537352b | 685 | static int service_load(Unit *u) { |
e537352b | 686 | Service *s = SERVICE(u); |
8bb2d17d | 687 | int r; |
e537352b LP |
688 | |
689 | assert(s); | |
1e2e8133 | 690 | |
5cb5a6ff | 691 | /* Load a .service file */ |
c2756a68 LP |
692 | r = unit_load_fragment(u); |
693 | if (r < 0) | |
5cb5a6ff LP |
694 | return r; |
695 | ||
23a177ef | 696 | /* Still nothing found? Then let's give up */ |
ac155bb8 | 697 | if (u->load_state == UNIT_STUB) |
23a177ef | 698 | return -ENOENT; |
034c6ed7 | 699 | |
23a177ef | 700 | /* This is a new unit? Then let's add in some extras */ |
ac155bb8 | 701 | if (u->load_state == UNIT_LOADED) { |
c2756a68 LP |
702 | |
703 | /* We were able to load something, then let's add in | |
704 | * the dropin directories. */ | |
705 | r = unit_load_dropin(u); | |
706 | if (r < 0) | |
707 | return r; | |
708 | ||
8545f7ce LP |
709 | /* This is a new unit? Then let's add in some |
710 | * extras */ | |
711 | r = service_add_extras(s); | |
598459ce LP |
712 | if (r < 0) |
713 | return r; | |
8e274523 LP |
714 | } |
715 | ||
243b1432 | 716 | return service_verify(s); |
034c6ed7 LP |
717 | } |
718 | ||
87f0e418 | 719 | static void service_dump(Unit *u, FILE *f, const char *prefix) { |
5cb5a6ff | 720 | ServiceExecCommand c; |
87f0e418 | 721 | Service *s = SERVICE(u); |
47be870b | 722 | const char *prefix2; |
5cb5a6ff LP |
723 | |
724 | assert(s); | |
725 | ||
4c940960 | 726 | prefix = strempty(prefix); |
63c372cb | 727 | prefix2 = strjoina(prefix, "\t"); |
44d8db9e | 728 | |
5cb5a6ff | 729 | fprintf(f, |
81a2b7ce | 730 | "%sService State: %s\n" |
f42806df LP |
731 | "%sResult: %s\n" |
732 | "%sReload Result: %s\n" | |
81a2b7ce | 733 | "%sPermissionsStartOnly: %s\n" |
8e274523 | 734 | "%sRootDirectoryStartOnly: %s\n" |
02ee865a | 735 | "%sRemainAfterExit: %s\n" |
3185a36b | 736 | "%sGuessMainPID: %s\n" |
c952c6ec | 737 | "%sType: %s\n" |
2cf3143a | 738 | "%sRestart: %s\n" |
308d72dc LP |
739 | "%sNotifyAccess: %s\n" |
740 | "%sNotifyState: %s\n", | |
81a2b7ce | 741 | prefix, service_state_to_string(s->state), |
f42806df LP |
742 | prefix, service_result_to_string(s->result), |
743 | prefix, service_result_to_string(s->reload_result), | |
81a2b7ce | 744 | prefix, yes_no(s->permissions_start_only), |
8e274523 | 745 | prefix, yes_no(s->root_directory_start_only), |
02ee865a | 746 | prefix, yes_no(s->remain_after_exit), |
3185a36b | 747 | prefix, yes_no(s->guess_main_pid), |
c952c6ec | 748 | prefix, service_type_to_string(s->type), |
2cf3143a | 749 | prefix, service_restart_to_string(s->restart), |
308d72dc LP |
750 | prefix, notify_access_to_string(s->notify_access), |
751 | prefix, notify_state_to_string(s->notify_state)); | |
5cb5a6ff | 752 | |
70123e68 LP |
753 | if (s->control_pid > 0) |
754 | fprintf(f, | |
ccd06097 ZJS |
755 | "%sControl PID: "PID_FMT"\n", |
756 | prefix, s->control_pid); | |
70123e68 LP |
757 | |
758 | if (s->main_pid > 0) | |
759 | fprintf(f, | |
ccd06097 | 760 | "%sMain PID: "PID_FMT"\n" |
6dfa5494 LP |
761 | "%sMain PID Known: %s\n" |
762 | "%sMain PID Alien: %s\n", | |
ccd06097 | 763 | prefix, s->main_pid, |
6dfa5494 LP |
764 | prefix, yes_no(s->main_pid_known), |
765 | prefix, yes_no(s->main_pid_alien)); | |
70123e68 | 766 | |
034c6ed7 LP |
767 | if (s->pid_file) |
768 | fprintf(f, | |
769 | "%sPIDFile: %s\n", | |
770 | prefix, s->pid_file); | |
771 | ||
05e343b7 LP |
772 | if (s->bus_name) |
773 | fprintf(f, | |
774 | "%sBusName: %s\n" | |
775 | "%sBus Name Good: %s\n", | |
776 | prefix, s->bus_name, | |
777 | prefix, yes_no(s->bus_name_good)); | |
778 | ||
9dfb64f8 ZJS |
779 | if (UNIT_ISSET(s->accept_socket)) |
780 | fprintf(f, | |
781 | "%sAccept Socket: %s\n", | |
782 | prefix, UNIT_DEREF(s->accept_socket)->id); | |
783 | ||
4819ff03 | 784 | kill_context_dump(&s->kill_context, f, prefix); |
5cb5a6ff LP |
785 | exec_context_dump(&s->exec_context, f, prefix); |
786 | ||
e537352b | 787 | for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) { |
5cb5a6ff | 788 | |
44d8db9e LP |
789 | if (!s->exec_command[c]) |
790 | continue; | |
791 | ||
40d50879 | 792 | fprintf(f, "%s-> %s:\n", |
94f04347 | 793 | prefix, service_exec_command_to_string(c)); |
44d8db9e LP |
794 | |
795 | exec_command_dump_list(s->exec_command[c], f, prefix2); | |
5cb5a6ff | 796 | } |
44d8db9e | 797 | |
8c47c732 LP |
798 | if (s->status_text) |
799 | fprintf(f, "%sStatus Text: %s\n", | |
800 | prefix, s->status_text); | |
a354329f | 801 | |
ece174c5 | 802 | if (s->n_fd_store_max > 0) |
a354329f LP |
803 | fprintf(f, |
804 | "%sFile Descriptor Store Max: %u\n" | |
805 | "%sFile Descriptor Store Current: %u\n", | |
806 | prefix, s->n_fd_store_max, | |
807 | prefix, s->n_fd_store); | |
18f573aa LP |
808 | |
809 | cgroup_context_dump(&s->cgroup_context, f, prefix); | |
5cb5a6ff LP |
810 | } |
811 | ||
c5419d42 | 812 | static int service_load_pid_file(Service *s, bool may_warn) { |
7fd1b19b | 813 | _cleanup_free_ char *k = NULL; |
034c6ed7 | 814 | int r; |
5925dd3c | 815 | pid_t pid; |
034c6ed7 LP |
816 | |
817 | assert(s); | |
818 | ||
034c6ed7 | 819 | if (!s->pid_file) |
13230d5d | 820 | return -ENOENT; |
034c6ed7 | 821 | |
117dcc57 ZJS |
822 | r = read_one_line_file(s->pid_file, &k); |
823 | if (r < 0) { | |
c5419d42 | 824 | if (may_warn) |
f2341e0a | 825 | log_unit_info_errno(UNIT(s), r, "PID file %s not readable (yet?) after %s: %m", s->pid_file, service_state_to_string(s->state)); |
034c6ed7 | 826 | return r; |
5375410b | 827 | } |
034c6ed7 | 828 | |
5925dd3c | 829 | r = parse_pid(k, &pid); |
bc41f93e ZJS |
830 | if (r < 0) { |
831 | if (may_warn) | |
f2341e0a | 832 | log_unit_info_errno(UNIT(s), r, "Failed to read PID from file %s: %m", s->pid_file); |
5925dd3c | 833 | return r; |
bc41f93e | 834 | } |
406eaf93 | 835 | |
9f5650ae | 836 | if (!pid_is_alive(pid)) { |
c5419d42 | 837 | if (may_warn) |
f2341e0a | 838 | log_unit_info(UNIT(s), "PID "PID_FMT" read from file %s does not exist or is a zombie.", pid, s->pid_file); |
e10c9985 YS |
839 | return -ESRCH; |
840 | } | |
841 | ||
db01f8b3 MS |
842 | if (s->main_pid_known) { |
843 | if (pid == s->main_pid) | |
844 | return 0; | |
845 | ||
f2341e0a | 846 | log_unit_debug(UNIT(s), "Main PID changing: "PID_FMT" -> "PID_FMT, s->main_pid, pid); |
8bb2d17d | 847 | |
db01f8b3 MS |
848 | service_unwatch_main_pid(s); |
849 | s->main_pid_known = false; | |
3a111838 | 850 | } else |
f2341e0a | 851 | log_unit_debug(UNIT(s), "Main PID loaded: "PID_FMT, pid); |
db01f8b3 | 852 | |
117dcc57 ZJS |
853 | r = service_set_main_pid(s, pid); |
854 | if (r < 0) | |
16f6025e LP |
855 | return r; |
856 | ||
117dcc57 | 857 | r = unit_watch_pid(UNIT(s), pid); |
e8b509d3 LP |
858 | if (r < 0) /* FIXME: we need to do something here */ |
859 | return log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" for service: %m", pid); | |
034c6ed7 LP |
860 | |
861 | return 0; | |
862 | } | |
863 | ||
783e05d6 | 864 | static void service_search_main_pid(Service *s) { |
efdb0237 | 865 | pid_t pid = 0; |
4fbf50b3 LP |
866 | int r; |
867 | ||
868 | assert(s); | |
869 | ||
3185a36b LP |
870 | /* If we know it anyway, don't ever fallback to unreliable |
871 | * heuristics */ | |
4fbf50b3 | 872 | if (s->main_pid_known) |
783e05d6 | 873 | return; |
4fbf50b3 | 874 | |
3185a36b | 875 | if (!s->guess_main_pid) |
783e05d6 | 876 | return; |
3185a36b | 877 | |
4fbf50b3 LP |
878 | assert(s->main_pid <= 0); |
879 | ||
783e05d6 ZJS |
880 | if (unit_search_main_pid(UNIT(s), &pid) < 0) |
881 | return; | |
4fbf50b3 | 882 | |
f2341e0a | 883 | log_unit_debug(UNIT(s), "Main PID guessed: "PID_FMT, pid); |
783e05d6 ZJS |
884 | if (service_set_main_pid(s, pid) < 0) |
885 | return; | |
4fbf50b3 | 886 | |
117dcc57 | 887 | r = unit_watch_pid(UNIT(s), pid); |
783e05d6 | 888 | if (r < 0) |
4fbf50b3 | 889 | /* FIXME: we need to do something here */ |
f2341e0a | 890 | log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" from: %m", pid); |
4fbf50b3 LP |
891 | } |
892 | ||
034c6ed7 LP |
893 | static void service_set_state(Service *s, ServiceState state) { |
894 | ServiceState old_state; | |
e056b01d | 895 | const UnitActiveState *table; |
842129f5 | 896 | |
5cb5a6ff LP |
897 | assert(s); |
898 | ||
e056b01d LP |
899 | table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
900 | ||
034c6ed7 | 901 | old_state = s->state; |
5cb5a6ff | 902 | s->state = state; |
034c6ed7 | 903 | |
3a111838 MS |
904 | service_unwatch_pid_file(s); |
905 | ||
842129f5 LP |
906 | if (!IN_SET(state, |
907 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
36c16a7c | 908 | SERVICE_RUNNING, |
842129f5 | 909 | SERVICE_RELOAD, |
57614eb1 | 910 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
842129f5 LP |
911 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL, |
912 | SERVICE_AUTO_RESTART)) | |
718db961 | 913 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
034c6ed7 | 914 | |
842129f5 LP |
915 | if (!IN_SET(state, |
916 | SERVICE_START, SERVICE_START_POST, | |
917 | SERVICE_RUNNING, SERVICE_RELOAD, | |
57614eb1 | 918 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf108e55 | 919 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
5e94833f | 920 | service_unwatch_main_pid(s); |
867b3b7d LP |
921 | s->main_command = NULL; |
922 | } | |
034c6ed7 | 923 | |
842129f5 LP |
924 | if (!IN_SET(state, |
925 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
926 | SERVICE_RELOAD, | |
57614eb1 | 927 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
842129f5 | 928 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
5e94833f | 929 | service_unwatch_control_pid(s); |
034c6ed7 | 930 | s->control_command = NULL; |
a16e1123 | 931 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; |
e537352b | 932 | } |
034c6ed7 | 933 | |
a911bb9a LP |
934 | if (IN_SET(state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART)) |
935 | unit_unwatch_all_pids(UNIT(s)); | |
936 | ||
842129f5 LP |
937 | if (!IN_SET(state, |
938 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
939 | SERVICE_RUNNING, SERVICE_RELOAD, | |
57614eb1 LP |
940 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
941 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL) && | |
5cc3985e | 942 | !(state == SERVICE_DEAD && UNIT(s)->job)) |
4f2d528d LP |
943 | service_close_socket_fd(s); |
944 | ||
7596e9e1 | 945 | if (!IN_SET(state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
a6927d7f MO |
946 | service_stop_watchdog(s); |
947 | ||
f6023656 LP |
948 | /* For the inactive states unit_notify() will trim the cgroup, |
949 | * but for exit we have to do that ourselves... */ | |
2c289ea8 | 950 | if (state == SERVICE_EXITED && !MANAGER_IS_RELOADING(UNIT(s)->manager)) |
efdb0237 | 951 | unit_prune_cgroup(UNIT(s)); |
f6023656 | 952 | |
9cd86184 OB |
953 | /* For remain_after_exit services, let's see if we can "release" the |
954 | * hold on the console, since unit_notify() only does that in case of | |
955 | * change of state */ | |
f49650ce LP |
956 | if (state == SERVICE_EXITED && |
957 | s->remain_after_exit && | |
9cd86184 | 958 | UNIT(s)->manager->n_on_console > 0) { |
f49650ce LP |
959 | |
960 | ExecContext *ec; | |
961 | ||
962 | ec = unit_get_exec_context(UNIT(s)); | |
9cd86184 OB |
963 | if (ec && exec_context_may_touch_console(ec)) { |
964 | Manager *m = UNIT(s)->manager; | |
965 | ||
313cefa1 | 966 | m->n_on_console--; |
9cd86184 OB |
967 | if (m->n_on_console == 0) |
968 | /* unset no_console_output flag, since the console is free */ | |
969 | m->no_console_output = false; | |
970 | } | |
971 | } | |
972 | ||
e537352b | 973 | if (old_state != state) |
f2341e0a | 974 | log_unit_debug(UNIT(s), "Changed %s -> %s", service_state_to_string(old_state), service_state_to_string(state)); |
acbb0225 | 975 | |
e056b01d | 976 | unit_notify(UNIT(s), table[old_state], table[state], s->reload_result == SERVICE_SUCCESS); |
034c6ed7 LP |
977 | } |
978 | ||
36c16a7c LP |
979 | static usec_t service_coldplug_timeout(Service *s) { |
980 | assert(s); | |
981 | ||
982 | switch (s->deserialized_state) { | |
983 | ||
984 | case SERVICE_START_PRE: | |
985 | case SERVICE_START: | |
986 | case SERVICE_START_POST: | |
987 | case SERVICE_RELOAD: | |
988 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->timeout_start_usec); | |
989 | ||
990 | case SERVICE_RUNNING: | |
991 | return usec_add(UNIT(s)->active_enter_timestamp.monotonic, s->runtime_max_usec); | |
992 | ||
993 | case SERVICE_STOP: | |
994 | case SERVICE_STOP_SIGABRT: | |
995 | case SERVICE_STOP_SIGTERM: | |
996 | case SERVICE_STOP_SIGKILL: | |
997 | case SERVICE_STOP_POST: | |
998 | case SERVICE_FINAL_SIGTERM: | |
999 | case SERVICE_FINAL_SIGKILL: | |
1000 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->timeout_stop_usec); | |
1001 | ||
1002 | case SERVICE_AUTO_RESTART: | |
1003 | return usec_add(UNIT(s)->inactive_enter_timestamp.monotonic, s->restart_usec); | |
1004 | ||
1005 | default: | |
1006 | return USEC_INFINITY; | |
1007 | } | |
1008 | } | |
1009 | ||
be847e82 | 1010 | static int service_coldplug(Unit *u) { |
a16e1123 LP |
1011 | Service *s = SERVICE(u); |
1012 | int r; | |
1013 | ||
1014 | assert(s); | |
1015 | assert(s->state == SERVICE_DEAD); | |
1016 | ||
930d2838 LP |
1017 | if (s->deserialized_state == s->state) |
1018 | return 0; | |
6c12b52e | 1019 | |
36c16a7c LP |
1020 | r = service_arm_timer(s, service_coldplug_timeout(s)); |
1021 | if (r < 0) | |
1022 | return r; | |
a911bb9a | 1023 | |
930d2838 LP |
1024 | if (s->main_pid > 0 && |
1025 | pid_is_unwaited(s->main_pid) && | |
1026 | ((s->deserialized_state == SERVICE_START && IN_SET(s->type, SERVICE_FORKING, SERVICE_DBUS, SERVICE_ONESHOT, SERVICE_NOTIFY)) || | |
1027 | IN_SET(s->deserialized_state, | |
1028 | SERVICE_START, SERVICE_START_POST, | |
1029 | SERVICE_RUNNING, SERVICE_RELOAD, | |
1030 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, | |
1031 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL))) { | |
1032 | r = unit_watch_pid(UNIT(s), s->main_pid); | |
1033 | if (r < 0) | |
1034 | return r; | |
1035 | } | |
bb242b7b | 1036 | |
930d2838 LP |
1037 | if (s->control_pid > 0 && |
1038 | pid_is_unwaited(s->control_pid) && | |
1039 | IN_SET(s->deserialized_state, | |
1040 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
1041 | SERVICE_RELOAD, | |
1042 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, | |
1043 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { | |
1044 | r = unit_watch_pid(UNIT(s), s->control_pid); | |
1045 | if (r < 0) | |
1046 | return r; | |
a16e1123 | 1047 | } |
92c1622e | 1048 | |
930d2838 LP |
1049 | if (!IN_SET(s->deserialized_state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART)) |
1050 | unit_watch_all_pids(UNIT(s)); | |
1051 | ||
1052 | if (IN_SET(s->deserialized_state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) | |
1053 | service_start_watchdog(s); | |
1054 | ||
29206d46 LP |
1055 | if (!IN_SET(s->deserialized_state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART)) |
1056 | (void) unit_setup_dynamic_creds(u); | |
1057 | ||
3ebcd323 ZJS |
1058 | if (UNIT_ISSET(s->accept_socket)) { |
1059 | Socket* socket = SOCKET(UNIT_DEREF(s->accept_socket)); | |
1060 | ||
1061 | if (socket->max_connections_per_source > 0) { | |
1062 | SocketPeer *peer; | |
1063 | ||
1064 | /* Make a best-effort attempt at bumping the connection count */ | |
1065 | if (socket_acquire_peer(socket, s->socket_fd, &peer) > 0) { | |
1066 | socket_peer_unref(s->peer); | |
1067 | s->peer = peer; | |
1068 | } | |
1069 | } | |
1070 | } | |
1071 | ||
930d2838 | 1072 | service_set_state(s, s->deserialized_state); |
a16e1123 LP |
1073 | return 0; |
1074 | } | |
1075 | ||
4c47affc FB |
1076 | static int service_collect_fds(Service *s, |
1077 | int **fds, | |
1078 | char ***fd_names, | |
1079 | unsigned *n_storage_fds, | |
1080 | unsigned *n_socket_fds) { | |
1081 | ||
8dd4c05b | 1082 | _cleanup_strv_free_ char **rfd_names = NULL; |
a354329f | 1083 | _cleanup_free_ int *rfds = NULL; |
4c47affc FB |
1084 | unsigned rn_socket_fds = 0, rn_storage_fds = 0; |
1085 | int r; | |
44d8db9e LP |
1086 | |
1087 | assert(s); | |
1088 | assert(fds); | |
8dd4c05b | 1089 | assert(fd_names); |
9b141911 | 1090 | assert(n_socket_fds); |
44d8db9e | 1091 | |
8dd4c05b | 1092 | if (s->socket_fd >= 0) { |
6cf6bbc2 | 1093 | |
8dd4c05b | 1094 | /* Pass the per-connection socket */ |
57020a3a | 1095 | |
8dd4c05b LP |
1096 | rfds = new(int, 1); |
1097 | if (!rfds) | |
1098 | return -ENOMEM; | |
1099 | rfds[0] = s->socket_fd; | |
57020a3a | 1100 | |
8dd4c05b LP |
1101 | rfd_names = strv_new("connection", NULL); |
1102 | if (!rfd_names) | |
1103 | return -ENOMEM; | |
44d8db9e | 1104 | |
4c47affc | 1105 | rn_socket_fds = 1; |
8dd4c05b LP |
1106 | } else { |
1107 | Iterator i; | |
eef85c4a | 1108 | void *v; |
8dd4c05b | 1109 | Unit *u; |
44d8db9e | 1110 | |
8dd4c05b | 1111 | /* Pass all our configured sockets for singleton services */ |
44d8db9e | 1112 | |
eef85c4a | 1113 | HASHMAP_FOREACH_KEY(v, u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) { |
8dd4c05b LP |
1114 | _cleanup_free_ int *cfds = NULL; |
1115 | Socket *sock; | |
1116 | int cn_fds; | |
44d8db9e | 1117 | |
8dd4c05b LP |
1118 | if (u->type != UNIT_SOCKET) |
1119 | continue; | |
44d8db9e | 1120 | |
8dd4c05b | 1121 | sock = SOCKET(u); |
a354329f | 1122 | |
8dd4c05b LP |
1123 | cn_fds = socket_collect_fds(sock, &cfds); |
1124 | if (cn_fds < 0) | |
1125 | return cn_fds; | |
44d8db9e | 1126 | |
8dd4c05b LP |
1127 | if (cn_fds <= 0) |
1128 | continue; | |
79c7626d | 1129 | |
8dd4c05b LP |
1130 | if (!rfds) { |
1131 | rfds = cfds; | |
4c47affc | 1132 | rn_socket_fds = cn_fds; |
8dd4c05b LP |
1133 | |
1134 | cfds = NULL; | |
1135 | } else { | |
1136 | int *t; | |
1137 | ||
4c47affc | 1138 | t = realloc(rfds, (rn_socket_fds + cn_fds) * sizeof(int)); |
8dd4c05b LP |
1139 | if (!t) |
1140 | return -ENOMEM; | |
1141 | ||
4c47affc | 1142 | memcpy(t + rn_socket_fds, cfds, cn_fds * sizeof(int)); |
8dd4c05b LP |
1143 | |
1144 | rfds = t; | |
4c47affc | 1145 | rn_socket_fds += cn_fds; |
8dd4c05b LP |
1146 | } |
1147 | ||
1148 | r = strv_extend_n(&rfd_names, socket_fdname(sock), cn_fds); | |
1149 | if (r < 0) | |
1150 | return r; | |
44d8db9e LP |
1151 | } |
1152 | } | |
1153 | ||
a354329f LP |
1154 | if (s->n_fd_store > 0) { |
1155 | ServiceFDStore *fs; | |
4c47affc | 1156 | unsigned n_fds; |
8dd4c05b | 1157 | char **nl; |
a354329f LP |
1158 | int *t; |
1159 | ||
4c47affc | 1160 | t = realloc(rfds, (rn_socket_fds + s->n_fd_store) * sizeof(int)); |
a354329f LP |
1161 | if (!t) |
1162 | return -ENOMEM; | |
1163 | ||
1164 | rfds = t; | |
8dd4c05b | 1165 | |
4c47affc | 1166 | nl = realloc(rfd_names, (rn_socket_fds + s->n_fd_store + 1) * sizeof(char*)); |
8dd4c05b LP |
1167 | if (!nl) |
1168 | return -ENOMEM; | |
1169 | ||
1170 | rfd_names = nl; | |
4c47affc | 1171 | n_fds = rn_socket_fds; |
8dd4c05b LP |
1172 | |
1173 | LIST_FOREACH(fd_store, fs, s->fd_store) { | |
4c47affc FB |
1174 | rfds[n_fds] = fs->fd; |
1175 | rfd_names[n_fds] = strdup(strempty(fs->fdname)); | |
1176 | if (!rfd_names[n_fds]) | |
8dd4c05b LP |
1177 | return -ENOMEM; |
1178 | ||
4c47affc FB |
1179 | rn_storage_fds++; |
1180 | n_fds++; | |
8dd4c05b LP |
1181 | } |
1182 | ||
4c47affc | 1183 | rfd_names[n_fds] = NULL; |
a354329f LP |
1184 | } |
1185 | ||
44d8db9e | 1186 | *fds = rfds; |
8dd4c05b | 1187 | *fd_names = rfd_names; |
9b141911 | 1188 | *n_socket_fds = rn_socket_fds; |
4c47affc | 1189 | *n_storage_fds = rn_storage_fds; |
3e33402a | 1190 | |
a354329f | 1191 | rfds = NULL; |
8dd4c05b | 1192 | rfd_names = NULL; |
79c7626d | 1193 | |
4c47affc | 1194 | return 0; |
44d8db9e LP |
1195 | } |
1196 | ||
6375bd20 JW |
1197 | static bool service_exec_needs_notify_socket(Service *s, ExecFlags flags) { |
1198 | assert(s); | |
1199 | ||
1200 | /* Notifications are accepted depending on the process and | |
1201 | * the access setting of the service: | |
1202 | * process: \ access: NONE MAIN EXEC ALL | |
1203 | * main no yes yes yes | |
1204 | * control no no yes yes | |
1205 | * other (forked) no no no yes */ | |
1206 | ||
1207 | if (flags & EXEC_IS_CONTROL) | |
1208 | /* A control process */ | |
1209 | return IN_SET(s->notify_access, NOTIFY_EXEC, NOTIFY_ALL); | |
1210 | ||
1211 | /* We only spawn main processes and control processes, so any | |
1212 | * process that is not a control process is a main process */ | |
1213 | return s->notify_access != NOTIFY_NONE; | |
1214 | } | |
1215 | ||
81a2b7ce LP |
1216 | static int service_spawn( |
1217 | Service *s, | |
1218 | ExecCommand *c, | |
21b2ce39 | 1219 | usec_t timeout, |
c39f1ce2 | 1220 | ExecFlags flags, |
81a2b7ce LP |
1221 | pid_t *_pid) { |
1222 | ||
5125e762 | 1223 | _cleanup_strv_free_ char **final_env = NULL, **our_env = NULL, **fd_names = NULL; |
8dd4c05b | 1224 | _cleanup_free_ int *fds = NULL; |
4c47affc | 1225 | unsigned n_storage_fds = 0, n_socket_fds = 0, n_env = 0; |
8dd4c05b LP |
1226 | pid_t pid; |
1227 | ||
9fa95f85 | 1228 | ExecParameters exec_params = { |
c39f1ce2 LP |
1229 | .flags = flags, |
1230 | .stdin_fd = -1, | |
1231 | .stdout_fd = -1, | |
1232 | .stderr_fd = -1, | |
9fa95f85 | 1233 | }; |
034c6ed7 | 1234 | |
8dd4c05b LP |
1235 | int r; |
1236 | ||
034c6ed7 LP |
1237 | assert(s); |
1238 | assert(c); | |
1239 | assert(_pid); | |
1240 | ||
9c1a61ad LP |
1241 | if (flags & EXEC_IS_CONTROL) { |
1242 | /* If this is a control process, mask the permissions/chroot application if this is requested. */ | |
1243 | if (s->permissions_start_only) | |
1703fa41 | 1244 | exec_params.flags &= ~EXEC_APPLY_SANDBOXING; |
9c1a61ad LP |
1245 | if (s->root_directory_start_only) |
1246 | exec_params.flags &= ~EXEC_APPLY_CHROOT; | |
1247 | } | |
1248 | ||
5ad096b3 | 1249 | (void) unit_realize_cgroup(UNIT(s)); |
906c06f6 DM |
1250 | if (s->reset_accounting) { |
1251 | (void) unit_reset_cpu_accounting(UNIT(s)); | |
1252 | (void) unit_reset_ip_accounting(UNIT(s)); | |
1253 | s->reset_accounting = false; | |
5ad096b3 | 1254 | } |
4ad49000 | 1255 | |
d3070fbd LP |
1256 | unit_export_state_files(UNIT(s)); |
1257 | ||
613b411c LP |
1258 | r = unit_setup_exec_runtime(UNIT(s)); |
1259 | if (r < 0) | |
36c16a7c | 1260 | return r; |
613b411c | 1261 | |
29206d46 LP |
1262 | r = unit_setup_dynamic_creds(UNIT(s)); |
1263 | if (r < 0) | |
1264 | return r; | |
1265 | ||
c39f1ce2 | 1266 | if ((flags & EXEC_PASS_FDS) || |
6cf6bbc2 LP |
1267 | s->exec_context.std_input == EXEC_INPUT_SOCKET || |
1268 | s->exec_context.std_output == EXEC_OUTPUT_SOCKET || | |
1269 | s->exec_context.std_error == EXEC_OUTPUT_SOCKET) { | |
1270 | ||
4c47affc | 1271 | r = service_collect_fds(s, &fds, &fd_names, &n_storage_fds, &n_socket_fds); |
8dd4c05b | 1272 | if (r < 0) |
36c16a7c | 1273 | return r; |
6cf6bbc2 | 1274 | |
4c47affc | 1275 | log_unit_debug(UNIT(s), "Passing %i fds to service", n_storage_fds + n_socket_fds); |
4f2d528d | 1276 | } |
44d8db9e | 1277 | |
36c16a7c LP |
1278 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), timeout)); |
1279 | if (r < 0) | |
1280 | return r; | |
034c6ed7 | 1281 | |
136dc4c4 | 1282 | our_env = new0(char*, 9); |
36c16a7c LP |
1283 | if (!our_env) |
1284 | return -ENOMEM; | |
c952c6ec | 1285 | |
6375bd20 | 1286 | if (service_exec_needs_notify_socket(s, flags)) |
36c16a7c LP |
1287 | if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) |
1288 | return -ENOMEM; | |
c952c6ec | 1289 | |
2105e76a | 1290 | if (s->main_pid > 0) |
36c16a7c LP |
1291 | if (asprintf(our_env + n_env++, "MAINPID="PID_FMT, s->main_pid) < 0) |
1292 | return -ENOMEM; | |
2105e76a | 1293 | |
c39f1ce2 | 1294 | if (MANAGER_IS_USER(UNIT(s)->manager)) |
df0ff127 | 1295 | if (asprintf(our_env + n_env++, "MANAGERPID="PID_FMT, getpid_cached()) < 0) |
36c16a7c | 1296 | return -ENOMEM; |
97ae63e2 | 1297 | |
8dd4c05b | 1298 | if (s->socket_fd >= 0) { |
3b1c5241 SL |
1299 | union sockaddr_union sa; |
1300 | socklen_t salen = sizeof(sa); | |
1301 | ||
f56e7bfe LP |
1302 | /* If this is a per-connection service instance, let's set $REMOTE_ADDR and $REMOTE_PORT to something |
1303 | * useful. Note that we do this only when we are still connected at this point in time, which we might | |
1304 | * very well not be. Hence we ignore all errors when retrieving peer information (as that might result | |
1305 | * in ENOTCONN), and just use whate we can use. */ | |
f2dbd059 | 1306 | |
f56e7bfe LP |
1307 | if (getpeername(s->socket_fd, &sa.sa, &salen) >= 0 && |
1308 | IN_SET(sa.sa.sa_family, AF_INET, AF_INET6, AF_VSOCK)) { | |
3b1c5241 | 1309 | |
3b1c5241 SL |
1310 | _cleanup_free_ char *addr = NULL; |
1311 | char *t; | |
882ac6e7 | 1312 | unsigned port; |
3b1c5241 SL |
1313 | |
1314 | r = sockaddr_pretty(&sa.sa, salen, true, false, &addr); | |
1315 | if (r < 0) | |
36c16a7c | 1316 | return r; |
3b1c5241 SL |
1317 | |
1318 | t = strappend("REMOTE_ADDR=", addr); | |
36c16a7c LP |
1319 | if (!t) |
1320 | return -ENOMEM; | |
3b1c5241 SL |
1321 | our_env[n_env++] = t; |
1322 | ||
882ac6e7 SH |
1323 | r = sockaddr_port(&sa.sa, &port); |
1324 | if (r < 0) | |
1325 | return r; | |
3b1c5241 | 1326 | |
36c16a7c LP |
1327 | if (asprintf(&t, "REMOTE_PORT=%u", port) < 0) |
1328 | return -ENOMEM; | |
3b1c5241 SL |
1329 | our_env[n_env++] = t; |
1330 | } | |
1331 | } | |
1332 | ||
136dc4c4 LP |
1333 | if (flags & EXEC_SETENV_RESULT) { |
1334 | if (asprintf(our_env + n_env++, "SERVICE_RESULT=%s", service_result_to_string(s->result)) < 0) | |
1335 | return -ENOMEM; | |
1336 | ||
1337 | if (s->main_exec_status.pid > 0 && | |
1338 | dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) { | |
1339 | if (asprintf(our_env + n_env++, "EXIT_CODE=%s", sigchld_code_to_string(s->main_exec_status.code)) < 0) | |
1340 | return -ENOMEM; | |
1341 | ||
1342 | if (s->main_exec_status.code == CLD_EXITED) | |
1343 | r = asprintf(our_env + n_env++, "EXIT_STATUS=%i", s->main_exec_status.status); | |
1344 | else | |
1345 | r = asprintf(our_env + n_env++, "EXIT_STATUS=%s", signal_to_string(s->main_exec_status.status)); | |
1346 | if (r < 0) | |
1347 | return -ENOMEM; | |
1348 | } | |
1349 | } | |
1350 | ||
19bbdd98 | 1351 | manager_set_exec_params(UNIT(s)->manager, &exec_params); |
f0d47797 | 1352 | unit_set_exec_params(UNIT(s), &exec_params); |
3536f49e YW |
1353 | |
1354 | final_env = strv_env_merge(2, exec_params.environment, our_env, NULL); | |
36c16a7c LP |
1355 | if (!final_env) |
1356 | return -ENOMEM; | |
c952c6ec | 1357 | |
c39f1ce2 | 1358 | if ((flags & EXEC_IS_CONTROL) && UNIT(s)->cgroup_path) { |
f0d47797 LP |
1359 | exec_params.cgroup_path = strjoina(UNIT(s)->cgroup_path, "/control"); |
1360 | (void) cg_create(SYSTEMD_CGROUP_CONTROLLER, exec_params.cgroup_path); | |
1361 | } | |
4ad49000 | 1362 | |
5bf7569c LP |
1363 | /* System services should get a new keyring by default. */ |
1364 | SET_FLAG(exec_params.flags, EXEC_NEW_KEYRING, MANAGER_IS_SYSTEM(UNIT(s)->manager)); | |
ac647978 LP |
1365 | |
1366 | /* System D-Bus needs nss-systemd disabled, so that we don't deadlock */ | |
1367 | SET_FLAG(exec_params.flags, EXEC_NSS_BYPASS_BUS, | |
1368 | MANAGER_IS_SYSTEM(UNIT(s)->manager) && unit_has_name(UNIT(s), SPECIAL_DBUS_SERVICE)); | |
4ad49000 | 1369 | |
5125e762 | 1370 | exec_params.argv = c->argv; |
c39f1ce2 | 1371 | exec_params.environment = final_env; |
9fa95f85 | 1372 | exec_params.fds = fds; |
8dd4c05b | 1373 | exec_params.fd_names = fd_names; |
4c47affc | 1374 | exec_params.n_storage_fds = n_storage_fds; |
9b141911 | 1375 | exec_params.n_socket_fds = n_socket_fds; |
9fa95f85 | 1376 | exec_params.watchdog_usec = s->watchdog_usec; |
a34ceba6 | 1377 | exec_params.selinux_context_net = s->socket_fd_selinux_context_net; |
9fa95f85 DM |
1378 | if (s->type == SERVICE_IDLE) |
1379 | exec_params.idle_pipe = UNIT(s)->manager->idle_pipe; | |
a34ceba6 LP |
1380 | exec_params.stdin_fd = s->stdin_fd; |
1381 | exec_params.stdout_fd = s->stdout_fd; | |
1382 | exec_params.stderr_fd = s->stderr_fd; | |
9fa95f85 | 1383 | |
f2341e0a LP |
1384 | r = exec_spawn(UNIT(s), |
1385 | c, | |
9e2f7c11 | 1386 | &s->exec_context, |
9fa95f85 | 1387 | &exec_params, |
613b411c | 1388 | s->exec_runtime, |
29206d46 | 1389 | &s->dynamic_creds, |
9e2f7c11 | 1390 | &pid); |
9e2f7c11 | 1391 | if (r < 0) |
36c16a7c | 1392 | return r; |
034c6ed7 | 1393 | |
117dcc57 | 1394 | r = unit_watch_pid(UNIT(s), pid); |
e8b509d3 | 1395 | if (r < 0) /* FIXME: we need to do something here */ |
36c16a7c | 1396 | return r; |
034c6ed7 LP |
1397 | |
1398 | *_pid = pid; | |
1399 | ||
5cb5a6ff | 1400 | return 0; |
034c6ed7 LP |
1401 | } |
1402 | ||
80876c20 LP |
1403 | static int main_pid_good(Service *s) { |
1404 | assert(s); | |
1405 | ||
51894d70 | 1406 | /* Returns 0 if the pid is dead, > 0 if it is good, < 0 if we don't know */ |
80876c20 | 1407 | |
fc08079e | 1408 | /* If we know the pid file, then let's just check if it is |
80876c20 | 1409 | * still valid */ |
6dfa5494 LP |
1410 | if (s->main_pid_known) { |
1411 | ||
1412 | /* If it's an alien child let's check if it is still | |
1413 | * alive ... */ | |
62220cf7 | 1414 | if (s->main_pid_alien && s->main_pid > 0) |
9f5650ae | 1415 | return pid_is_alive(s->main_pid); |
6dfa5494 LP |
1416 | |
1417 | /* .. otherwise assume we'll get a SIGCHLD for it, | |
1418 | * which we really should wait for to collect exit | |
1419 | * status and code */ | |
80876c20 | 1420 | return s->main_pid > 0; |
6dfa5494 | 1421 | } |
80876c20 LP |
1422 | |
1423 | /* We don't know the pid */ | |
1424 | return -EAGAIN; | |
1425 | } | |
1426 | ||
019be286 | 1427 | static int control_pid_good(Service *s) { |
80876c20 LP |
1428 | assert(s); |
1429 | ||
07697d7e LP |
1430 | /* Returns 0 if the control PID is dead, > 0 if it is good. We never actually return < 0 here, but in order to |
1431 | * make this function as similar as possible to main_pid_good() and cgroup_good(), we pretend that < 0 also | |
1432 | * means: we can't figure it out. */ | |
1433 | ||
80876c20 LP |
1434 | return s->control_pid > 0; |
1435 | } | |
1436 | ||
1437 | static int cgroup_good(Service *s) { | |
1438 | int r; | |
1439 | ||
1440 | assert(s); | |
1441 | ||
07697d7e LP |
1442 | /* Returns 0 if the cgroup is empty or doesn't exist, > 0 if it is exists and is populated, < 0 if we can't |
1443 | * figure it out */ | |
1444 | ||
4ad49000 LP |
1445 | if (!UNIT(s)->cgroup_path) |
1446 | return 0; | |
1447 | ||
6f883237 | 1448 | r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, UNIT(s)->cgroup_path); |
117dcc57 | 1449 | if (r < 0) |
80876c20 LP |
1450 | return r; |
1451 | ||
b13ddbbc | 1452 | return r == 0; |
80876c20 LP |
1453 | } |
1454 | ||
a509f0e6 LP |
1455 | static bool service_shall_restart(Service *s) { |
1456 | assert(s); | |
1457 | ||
1458 | /* Don't restart after manual stops */ | |
1459 | if (s->forbid_restart) | |
1460 | return false; | |
1461 | ||
1462 | /* Never restart if this is configured as special exception */ | |
1463 | if (exit_status_set_test(&s->restart_prevent_status, s->main_exec_status.code, s->main_exec_status.status)) | |
1464 | return false; | |
1465 | ||
1466 | /* Restart if the exit code/status are configured as restart triggers */ | |
1467 | if (exit_status_set_test(&s->restart_force_status, s->main_exec_status.code, s->main_exec_status.status)) | |
1468 | return true; | |
1469 | ||
1470 | switch (s->restart) { | |
1471 | ||
1472 | case SERVICE_RESTART_NO: | |
1473 | return false; | |
1474 | ||
1475 | case SERVICE_RESTART_ALWAYS: | |
1476 | return true; | |
1477 | ||
1478 | case SERVICE_RESTART_ON_SUCCESS: | |
1479 | return s->result == SERVICE_SUCCESS; | |
1480 | ||
1481 | case SERVICE_RESTART_ON_FAILURE: | |
1482 | return s->result != SERVICE_SUCCESS; | |
1483 | ||
1484 | case SERVICE_RESTART_ON_ABNORMAL: | |
1485 | return !IN_SET(s->result, SERVICE_SUCCESS, SERVICE_FAILURE_EXIT_CODE); | |
1486 | ||
1487 | case SERVICE_RESTART_ON_WATCHDOG: | |
1488 | return s->result == SERVICE_FAILURE_WATCHDOG; | |
1489 | ||
1490 | case SERVICE_RESTART_ON_ABORT: | |
1491 | return IN_SET(s->result, SERVICE_FAILURE_SIGNAL, SERVICE_FAILURE_CORE_DUMP); | |
1492 | ||
1493 | default: | |
1494 | assert_not_reached("unknown restart setting"); | |
1495 | } | |
1496 | } | |
1497 | ||
53f47dfc YW |
1498 | static bool service_will_restart(Service *s) { |
1499 | assert(s); | |
1500 | ||
1501 | if (s->state == SERVICE_AUTO_RESTART) | |
1502 | return true; | |
1503 | if (!UNIT(s)->job) | |
1504 | return false; | |
1505 | if (UNIT(s)->job->type == JOB_START) | |
1506 | return true; | |
1507 | return false; | |
1508 | } | |
1509 | ||
f42806df | 1510 | static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) { |
034c6ed7 | 1511 | int r; |
0f52f8e5 | 1512 | |
034c6ed7 LP |
1513 | assert(s); |
1514 | ||
0f52f8e5 LP |
1515 | /* If there's a stop job queued before we enter the DEAD state, we shouldn't act on Restart=, in order to not |
1516 | * undo what has already been enqueued. */ | |
1517 | if (unit_stop_pending(UNIT(s))) | |
1518 | allow_restart = false; | |
1519 | ||
a0fef983 | 1520 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1521 | s->result = f; |
034c6ed7 | 1522 | |
ed77d407 LP |
1523 | if (s->result != SERVICE_SUCCESS) |
1524 | log_unit_warning(UNIT(s), "Failed with result '%s'.", service_result_to_string(s->result)); | |
1525 | ||
7eb2a8a1 LP |
1526 | /* Make sure service_release_resources() doesn't destroy our FD store, while we are changing through |
1527 | * SERVICE_FAILED/SERVICE_DEAD before entering into SERVICE_AUTO_RESTART. */ | |
1528 | s->n_keep_fd_store ++; | |
1529 | ||
0c7f15b3 MS |
1530 | service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD); |
1531 | ||
ed77d407 | 1532 | if (s->result != SERVICE_SUCCESS) |
87a47f99 | 1533 | emergency_action(UNIT(s)->manager, s->emergency_action, UNIT(s)->reboot_arg, "service failed"); |
93ae25e6 | 1534 | |
a509f0e6 | 1535 | if (allow_restart && service_shall_restart(s)) { |
034c6ed7 | 1536 | |
36c16a7c | 1537 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->restart_usec)); |
7eb2a8a1 LP |
1538 | if (r < 0) { |
1539 | s->n_keep_fd_store--; | |
034c6ed7 | 1540 | goto fail; |
7eb2a8a1 | 1541 | } |
034c6ed7 LP |
1542 | |
1543 | service_set_state(s, SERVICE_AUTO_RESTART); | |
7a0019d3 LP |
1544 | } else |
1545 | /* If we shan't restart, then flush out the restart counter. But don't do that immediately, so that the | |
1546 | * user can still introspect the counter. Do so on the next start. */ | |
1547 | s->flush_n_restarts = true; | |
034c6ed7 | 1548 | |
7eb2a8a1 LP |
1549 | /* The new state is in effect, let's decrease the fd store ref counter again. Let's also readd us to the GC |
1550 | * queue, so that the fd store is possibly gc'ed again */ | |
1551 | s->n_keep_fd_store--; | |
1552 | unit_add_to_gc_queue(UNIT(s)); | |
1553 | ||
f2341e0a | 1554 | /* The next restart might not be a manual stop, hence reset the flag indicating manual stops */ |
47342320 LP |
1555 | s->forbid_restart = false; |
1556 | ||
e66cf1a3 | 1557 | /* We want fresh tmpdirs in case service is started again immediately */ |
613b411c LP |
1558 | exec_runtime_destroy(s->exec_runtime); |
1559 | s->exec_runtime = exec_runtime_unref(s->exec_runtime); | |
c17ec25e | 1560 | |
53f47dfc YW |
1561 | if (s->exec_context.runtime_directory_preserve_mode == EXEC_PRESERVE_NO || |
1562 | (s->exec_context.runtime_directory_preserve_mode == EXEC_PRESERVE_RESTART && !service_will_restart(s))) | |
1563 | /* Also, remove the runtime directory */ | |
3536f49e | 1564 | exec_context_destroy_runtime_directory(&s->exec_context, UNIT(s)->manager->prefix[EXEC_DIRECTORY_RUNTIME]); |
e66cf1a3 | 1565 | |
00d9ef85 LP |
1566 | /* Get rid of the IPC bits of the user */ |
1567 | unit_unref_uid_gid(UNIT(s), true); | |
1568 | ||
29206d46 LP |
1569 | /* Release the user, and destroy it if we are the only remaining owner */ |
1570 | dynamic_creds_destroy(&s->dynamic_creds); | |
1571 | ||
9285c9ff LN |
1572 | /* Try to delete the pid file. At this point it will be |
1573 | * out-of-date, and some software might be confused by it, so | |
1574 | * let's remove it. */ | |
1575 | if (s->pid_file) | |
fabab190 | 1576 | (void) unlink(s->pid_file); |
9285c9ff | 1577 | |
034c6ed7 LP |
1578 | return; |
1579 | ||
1580 | fail: | |
f2341e0a | 1581 | log_unit_warning_errno(UNIT(s), r, "Failed to run install restart timer: %m"); |
f42806df | 1582 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); |
034c6ed7 LP |
1583 | } |
1584 | ||
f42806df | 1585 | static void service_enter_stop_post(Service *s, ServiceResult f) { |
034c6ed7 LP |
1586 | int r; |
1587 | assert(s); | |
1588 | ||
a0fef983 | 1589 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1590 | s->result = f; |
034c6ed7 | 1591 | |
5e94833f | 1592 | service_unwatch_control_pid(s); |
a911bb9a | 1593 | unit_watch_all_pids(UNIT(s)); |
5e94833f | 1594 | |
117dcc57 ZJS |
1595 | s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST]; |
1596 | if (s->control_command) { | |
867b3b7d LP |
1597 | s->control_command_id = SERVICE_EXEC_STOP_POST; |
1598 | ||
ecedd90f LP |
1599 | r = service_spawn(s, |
1600 | s->control_command, | |
21b2ce39 | 1601 | s->timeout_stop_usec, |
1703fa41 | 1602 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_IS_CONTROL|EXEC_SETENV_RESULT, |
ecedd90f LP |
1603 | &s->control_pid); |
1604 | if (r < 0) | |
034c6ed7 LP |
1605 | goto fail; |
1606 | ||
80876c20 LP |
1607 | service_set_state(s, SERVICE_STOP_POST); |
1608 | } else | |
ac84d1fb | 1609 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
1610 | |
1611 | return; | |
1612 | ||
1613 | fail: | |
f2341e0a | 1614 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop-post' task: %m"); |
f42806df | 1615 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1616 | } |
1617 | ||
4940c0b0 LP |
1618 | static int state_to_kill_operation(ServiceState state) { |
1619 | switch (state) { | |
1620 | ||
1621 | case SERVICE_STOP_SIGABRT: | |
1622 | return KILL_ABORT; | |
1623 | ||
1624 | case SERVICE_STOP_SIGTERM: | |
1625 | case SERVICE_FINAL_SIGTERM: | |
1626 | return KILL_TERMINATE; | |
1627 | ||
1628 | case SERVICE_STOP_SIGKILL: | |
1629 | case SERVICE_FINAL_SIGKILL: | |
1630 | return KILL_KILL; | |
1631 | ||
1632 | default: | |
1633 | return _KILL_OPERATION_INVALID; | |
1634 | } | |
1635 | } | |
1636 | ||
f42806df | 1637 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) { |
034c6ed7 | 1638 | int r; |
034c6ed7 LP |
1639 | |
1640 | assert(s); | |
1641 | ||
a0fef983 | 1642 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1643 | s->result = f; |
034c6ed7 | 1644 | |
a911bb9a LP |
1645 | unit_watch_all_pids(UNIT(s)); |
1646 | ||
cd2086fe LP |
1647 | r = unit_kill_context( |
1648 | UNIT(s), | |
1649 | &s->kill_context, | |
4940c0b0 | 1650 | state_to_kill_operation(state), |
cd2086fe LP |
1651 | s->main_pid, |
1652 | s->control_pid, | |
1653 | s->main_pid_alien); | |
1654 | if (r < 0) | |
1655 | goto fail; | |
034c6ed7 | 1656 | |
cd2086fe | 1657 | if (r > 0) { |
36c16a7c LP |
1658 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_stop_usec)); |
1659 | if (r < 0) | |
1660 | goto fail; | |
d6ea93e3 | 1661 | |
80876c20 | 1662 | service_set_state(s, state); |
1db0db4b | 1663 | } else if (IN_SET(state, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM) && s->kill_context.send_sigkill) |
ac84d1fb | 1664 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_SUCCESS); |
1db0db4b | 1665 | else if (IN_SET(state, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 1666 | service_enter_stop_post(s, SERVICE_SUCCESS); |
1db0db4b | 1667 | else if (state == SERVICE_FINAL_SIGTERM && s->kill_context.send_sigkill) |
ac84d1fb | 1668 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_SUCCESS); |
80876c20 | 1669 | else |
f42806df | 1670 | service_enter_dead(s, SERVICE_SUCCESS, true); |
034c6ed7 LP |
1671 | |
1672 | return; | |
1673 | ||
1674 | fail: | |
f2341e0a | 1675 | log_unit_warning_errno(UNIT(s), r, "Failed to kill processes: %m"); |
034c6ed7 | 1676 | |
a00973af | 1677 | if (IN_SET(state, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 1678 | service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES); |
034c6ed7 | 1679 | else |
f42806df | 1680 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
034c6ed7 LP |
1681 | } |
1682 | ||
308d72dc LP |
1683 | static void service_enter_stop_by_notify(Service *s) { |
1684 | assert(s); | |
1685 | ||
1686 | unit_watch_all_pids(UNIT(s)); | |
1687 | ||
36c16a7c | 1688 | service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_stop_usec)); |
308d72dc | 1689 | |
6041a7ee MS |
1690 | /* The service told us it's stopping, so it's as if we SIGTERM'd it. */ |
1691 | service_set_state(s, SERVICE_STOP_SIGTERM); | |
308d72dc LP |
1692 | } |
1693 | ||
f42806df | 1694 | static void service_enter_stop(Service *s, ServiceResult f) { |
034c6ed7 | 1695 | int r; |
5925dd3c | 1696 | |
034c6ed7 LP |
1697 | assert(s); |
1698 | ||
a0fef983 | 1699 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1700 | s->result = f; |
034c6ed7 | 1701 | |
5e94833f | 1702 | service_unwatch_control_pid(s); |
a911bb9a | 1703 | unit_watch_all_pids(UNIT(s)); |
5e94833f | 1704 | |
117dcc57 ZJS |
1705 | s->control_command = s->exec_command[SERVICE_EXEC_STOP]; |
1706 | if (s->control_command) { | |
867b3b7d LP |
1707 | s->control_command_id = SERVICE_EXEC_STOP; |
1708 | ||
ecedd90f LP |
1709 | r = service_spawn(s, |
1710 | s->control_command, | |
21b2ce39 | 1711 | s->timeout_stop_usec, |
1703fa41 | 1712 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_SETENV_RESULT, |
ecedd90f LP |
1713 | &s->control_pid); |
1714 | if (r < 0) | |
034c6ed7 LP |
1715 | goto fail; |
1716 | ||
80876c20 LP |
1717 | service_set_state(s, SERVICE_STOP); |
1718 | } else | |
f42806df | 1719 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
1720 | |
1721 | return; | |
1722 | ||
1723 | fail: | |
f2341e0a | 1724 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop' task: %m"); |
f42806df | 1725 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1726 | } |
1727 | ||
957c3cf9 LP |
1728 | static bool service_good(Service *s) { |
1729 | int main_pid_ok; | |
1730 | assert(s); | |
1731 | ||
1732 | if (s->type == SERVICE_DBUS && !s->bus_name_good) | |
1733 | return false; | |
1734 | ||
1735 | main_pid_ok = main_pid_good(s); | |
1736 | if (main_pid_ok > 0) /* It's alive */ | |
1737 | return true; | |
1738 | if (main_pid_ok == 0) /* It's dead */ | |
1739 | return false; | |
1740 | ||
1741 | /* OK, we don't know anything about the main PID, maybe | |
1742 | * because there is none. Let's check the control group | |
1743 | * instead. */ | |
1744 | ||
1745 | return cgroup_good(s) != 0; | |
1746 | } | |
1747 | ||
f42806df | 1748 | static void service_enter_running(Service *s, ServiceResult f) { |
80876c20 LP |
1749 | assert(s); |
1750 | ||
a0fef983 | 1751 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1752 | s->result = f; |
80876c20 | 1753 | |
089b64d5 LP |
1754 | service_unwatch_control_pid(s); |
1755 | ||
957c3cf9 | 1756 | if (service_good(s)) { |
308d72dc LP |
1757 | |
1758 | /* If there are any queued up sd_notify() | |
1759 | * notifications, process them now */ | |
1760 | if (s->notify_state == NOTIFY_RELOADING) | |
1761 | service_enter_reload_by_notify(s); | |
1762 | else if (s->notify_state == NOTIFY_STOPPING) | |
1763 | service_enter_stop_by_notify(s); | |
36c16a7c | 1764 | else { |
308d72dc | 1765 | service_set_state(s, SERVICE_RUNNING); |
36c16a7c LP |
1766 | service_arm_timer(s, usec_add(UNIT(s)->active_enter_timestamp.monotonic, s->runtime_max_usec)); |
1767 | } | |
308d72dc | 1768 | |
3d474ef7 | 1769 | } else if (f != SERVICE_SUCCESS) |
c3fda31d | 1770 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
3d474ef7 | 1771 | else if (s->remain_after_exit) |
80876c20 LP |
1772 | service_set_state(s, SERVICE_EXITED); |
1773 | else | |
f42806df | 1774 | service_enter_stop(s, SERVICE_SUCCESS); |
80876c20 LP |
1775 | } |
1776 | ||
034c6ed7 LP |
1777 | static void service_enter_start_post(Service *s) { |
1778 | int r; | |
1779 | assert(s); | |
1780 | ||
5e94833f | 1781 | service_unwatch_control_pid(s); |
842129f5 | 1782 | service_reset_watchdog(s); |
bb242b7b | 1783 | |
117dcc57 ZJS |
1784 | s->control_command = s->exec_command[SERVICE_EXEC_START_POST]; |
1785 | if (s->control_command) { | |
867b3b7d LP |
1786 | s->control_command_id = SERVICE_EXEC_START_POST; |
1787 | ||
ecedd90f LP |
1788 | r = service_spawn(s, |
1789 | s->control_command, | |
21b2ce39 | 1790 | s->timeout_start_usec, |
1703fa41 | 1791 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL, |
ecedd90f LP |
1792 | &s->control_pid); |
1793 | if (r < 0) | |
034c6ed7 LP |
1794 | goto fail; |
1795 | ||
80876c20 LP |
1796 | service_set_state(s, SERVICE_START_POST); |
1797 | } else | |
f42806df | 1798 | service_enter_running(s, SERVICE_SUCCESS); |
034c6ed7 LP |
1799 | |
1800 | return; | |
1801 | ||
1802 | fail: | |
f2341e0a | 1803 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-post' task: %m"); |
f42806df | 1804 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1805 | } |
1806 | ||
4ad49000 | 1807 | static void service_kill_control_processes(Service *s) { |
a6951a50 | 1808 | int r; |
4ad49000 | 1809 | |
a6951a50 LP |
1810 | assert(s); |
1811 | ||
1812 | if (s->control_pid > 0) { | |
1813 | r = kill_and_sigcont(s->control_pid, SIGKILL); | |
1814 | if (r < 0) { | |
1815 | _cleanup_free_ char *comm = NULL; | |
1816 | ||
1817 | (void) get_process_comm(s->control_pid, &comm); | |
1818 | ||
1819 | log_unit_debug_errno(UNIT(s), r, "Failed to kill control process " PID_FMT " (%s), ignoring: %m", | |
1820 | s->control_pid, strna(comm)); | |
1821 | } | |
1822 | } | |
4ad49000 | 1823 | |
a6951a50 LP |
1824 | if (UNIT(s)->cgroup_path) { |
1825 | _cleanup_set_free_ Set *pid_set = NULL; | |
1826 | char *p; | |
1827 | ||
1828 | if (s->control_pid > 0) { | |
1829 | r = set_make(&pid_set, PID_TO_PTR(s->control_pid), NULL); | |
1830 | if (r < 0) { | |
1831 | log_oom(); | |
1832 | return; | |
1833 | } | |
1834 | } | |
1835 | ||
1836 | p = strjoina(UNIT(s)->cgroup_path, "/control"); | |
1837 | r = cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, p, SIGKILL, CGROUP_SIGCONT|CGROUP_IGNORE_SELF|CGROUP_REMOVE, pid_set, NULL, NULL); | |
1838 | if (r < 0) | |
1839 | log_unit_debug_errno(UNIT(s), r, "Failed to send SIGKILL to processes of control group %s: %m", p); | |
1840 | } | |
4ad49000 LP |
1841 | } |
1842 | ||
034c6ed7 | 1843 | static void service_enter_start(Service *s) { |
4ad49000 | 1844 | ExecCommand *c; |
36c16a7c | 1845 | usec_t timeout; |
034c6ed7 LP |
1846 | pid_t pid; |
1847 | int r; | |
1848 | ||
1849 | assert(s); | |
1850 | ||
41efeaec LP |
1851 | service_unwatch_control_pid(s); |
1852 | service_unwatch_main_pid(s); | |
80876c20 | 1853 | |
8f53a7b8 LP |
1854 | /* We want to ensure that nobody leaks processes from |
1855 | * START_PRE here, so let's go on a killing spree, People | |
1856 | * should not spawn long running processes from START_PRE. */ | |
4ad49000 | 1857 | service_kill_control_processes(s); |
8f53a7b8 | 1858 | |
867b3b7d LP |
1859 | if (s->type == SERVICE_FORKING) { |
1860 | s->control_command_id = SERVICE_EXEC_START; | |
1861 | c = s->control_command = s->exec_command[SERVICE_EXEC_START]; | |
1862 | ||
1863 | s->main_command = NULL; | |
1864 | } else { | |
1865 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
1866 | s->control_command = NULL; | |
1867 | ||
1868 | c = s->main_command = s->exec_command[SERVICE_EXEC_START]; | |
1869 | } | |
34e9ba66 | 1870 | |
96fb8242 | 1871 | if (!c) { |
47fffb35 LP |
1872 | if (s->type != SERVICE_ONESHOT) { |
1873 | /* There's no command line configured for the main command? Hmm, that is strange. This can only | |
1874 | * happen if the configuration changes at runtime. In this case, let's enter a failure | |
1875 | * state. */ | |
1876 | log_unit_error(UNIT(s), "There's no 'start' task anymore we could start: %m"); | |
1877 | r = -ENXIO; | |
1878 | goto fail; | |
1879 | } | |
1880 | ||
96fb8242 LP |
1881 | service_enter_start_post(s); |
1882 | return; | |
1883 | } | |
1884 | ||
36c16a7c LP |
1885 | if (IN_SET(s->type, SERVICE_SIMPLE, SERVICE_IDLE)) |
1886 | /* For simple + idle this is the main process. We don't apply any timeout here, but | |
1887 | * service_enter_running() will later apply the .runtime_max_usec timeout. */ | |
1888 | timeout = USEC_INFINITY; | |
1889 | else | |
1890 | timeout = s->timeout_start_usec; | |
1891 | ||
ecedd90f LP |
1892 | r = service_spawn(s, |
1893 | c, | |
36c16a7c | 1894 | timeout, |
1703fa41 | 1895 | EXEC_PASS_FDS|EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_SET_WATCHDOG, |
ecedd90f LP |
1896 | &pid); |
1897 | if (r < 0) | |
034c6ed7 LP |
1898 | goto fail; |
1899 | ||
36c16a7c | 1900 | if (IN_SET(s->type, SERVICE_SIMPLE, SERVICE_IDLE)) { |
034c6ed7 LP |
1901 | /* For simple services we immediately start |
1902 | * the START_POST binaries. */ | |
1903 | ||
5925dd3c | 1904 | service_set_main_pid(s, pid); |
034c6ed7 LP |
1905 | service_enter_start_post(s); |
1906 | ||
1907 | } else if (s->type == SERVICE_FORKING) { | |
1908 | ||
1909 | /* For forking services we wait until the start | |
1910 | * process exited. */ | |
1911 | ||
e55224ca | 1912 | s->control_pid = pid; |
80876c20 LP |
1913 | service_set_state(s, SERVICE_START); |
1914 | ||
36c16a7c | 1915 | } else if (IN_SET(s->type, SERVICE_ONESHOT, SERVICE_DBUS, SERVICE_NOTIFY)) { |
7d55e835 | 1916 | |
34e9ba66 | 1917 | /* For oneshot services we wait until the start |
7d55e835 LP |
1918 | * process exited, too, but it is our main process. */ |
1919 | ||
05e343b7 | 1920 | /* For D-Bus services we know the main pid right away, |
8c47c732 LP |
1921 | * but wait for the bus name to appear on the |
1922 | * bus. Notify services are similar. */ | |
05e343b7 | 1923 | |
5925dd3c | 1924 | service_set_main_pid(s, pid); |
80876c20 | 1925 | service_set_state(s, SERVICE_START); |
034c6ed7 LP |
1926 | } else |
1927 | assert_not_reached("Unknown service type"); | |
1928 | ||
1929 | return; | |
1930 | ||
1931 | fail: | |
f2341e0a | 1932 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start' task: %m"); |
c3fda31d | 1933 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1934 | } |
1935 | ||
1936 | static void service_enter_start_pre(Service *s) { | |
1937 | int r; | |
1938 | ||
1939 | assert(s); | |
1940 | ||
5e94833f LP |
1941 | service_unwatch_control_pid(s); |
1942 | ||
117dcc57 ZJS |
1943 | s->control_command = s->exec_command[SERVICE_EXEC_START_PRE]; |
1944 | if (s->control_command) { | |
8f53a7b8 LP |
1945 | /* Before we start anything, let's clear up what might |
1946 | * be left from previous runs. */ | |
4ad49000 | 1947 | service_kill_control_processes(s); |
8f53a7b8 | 1948 | |
867b3b7d LP |
1949 | s->control_command_id = SERVICE_EXEC_START_PRE; |
1950 | ||
ecedd90f LP |
1951 | r = service_spawn(s, |
1952 | s->control_command, | |
21b2ce39 | 1953 | s->timeout_start_usec, |
1703fa41 | 1954 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_APPLY_TTY_STDIN, |
ecedd90f LP |
1955 | &s->control_pid); |
1956 | if (r < 0) | |
034c6ed7 LP |
1957 | goto fail; |
1958 | ||
80876c20 LP |
1959 | service_set_state(s, SERVICE_START_PRE); |
1960 | } else | |
034c6ed7 LP |
1961 | service_enter_start(s); |
1962 | ||
1963 | return; | |
1964 | ||
1965 | fail: | |
f2341e0a | 1966 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-pre' task: %m"); |
f42806df | 1967 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
034c6ed7 LP |
1968 | } |
1969 | ||
1970 | static void service_enter_restart(Service *s) { | |
4afd3348 | 1971 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
034c6ed7 | 1972 | int r; |
398ef8ba | 1973 | |
034c6ed7 LP |
1974 | assert(s); |
1975 | ||
a8bb2e65 LP |
1976 | if (UNIT(s)->job && UNIT(s)->job->type == JOB_STOP) { |
1977 | /* Don't restart things if we are going down anyway */ | |
f2341e0a | 1978 | log_unit_info(UNIT(s), "Stop job pending for unit, delaying automatic restart."); |
2edfa366 | 1979 | |
36c16a7c | 1980 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->restart_usec)); |
a8bb2e65 | 1981 | if (r < 0) |
2edfa366 | 1982 | goto fail; |
feae8adb DW |
1983 | |
1984 | return; | |
2edfa366 LP |
1985 | } |
1986 | ||
48bb5876 DW |
1987 | /* Any units that are bound to this service must also be |
1988 | * restarted. We use JOB_RESTART (instead of the more obvious | |
1989 | * JOB_START) here so that those dependency jobs will be added | |
1990 | * as well. */ | |
4bd29fe5 | 1991 | r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_FAIL, &error, NULL); |
48bb5876 | 1992 | if (r < 0) |
034c6ed7 LP |
1993 | goto fail; |
1994 | ||
7a0019d3 LP |
1995 | /* Count the jobs we enqueue for restarting. This counter is maintained as long as the unit isn't fully |
1996 | * stopped, i.e. as long as it remains up or remains in auto-start states. The use can reset the counter | |
1997 | * explicitly however via the usual "systemctl reset-failure" logic. */ | |
1998 | s->n_restarts ++; | |
1999 | s->flush_n_restarts = false; | |
2000 | ||
2001 | log_struct(LOG_INFO, | |
2002 | "MESSAGE_ID=" SD_MESSAGE_UNIT_RESTART_SCHEDULED_STR, | |
2003 | LOG_UNIT_ID(UNIT(s)), | |
f1c50bec | 2004 | LOG_UNIT_INVOCATION_ID(UNIT(s)), |
7a0019d3 LP |
2005 | LOG_UNIT_MESSAGE(UNIT(s), "Scheduled restart job, restart counter is at %u.", s->n_restarts), |
2006 | "N_RESTARTS=%u", s->n_restarts, | |
2007 | NULL); | |
2008 | ||
2009 | /* Notify clients about changed restart counter */ | |
2010 | unit_add_to_dbus_queue(UNIT(s)); | |
2011 | ||
a8bb2e65 LP |
2012 | /* Note that we stay in the SERVICE_AUTO_RESTART state here, |
2013 | * it will be canceled as part of the service_stop() call that | |
2014 | * is executed as part of JOB_RESTART. */ | |
2015 | ||
034c6ed7 LP |
2016 | return; |
2017 | ||
2018 | fail: | |
f2341e0a | 2019 | log_unit_warning(UNIT(s), "Failed to schedule restart job: %s", bus_error_message(&error, -r)); |
f42806df | 2020 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); |
034c6ed7 LP |
2021 | } |
2022 | ||
308d72dc | 2023 | static void service_enter_reload_by_notify(Service *s) { |
15d167f8 JW |
2024 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
2025 | int r; | |
2026 | ||
308d72dc LP |
2027 | assert(s); |
2028 | ||
36c16a7c | 2029 | service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_start_usec)); |
308d72dc | 2030 | service_set_state(s, SERVICE_RELOAD); |
15d167f8 JW |
2031 | |
2032 | /* service_enter_reload_by_notify is never called during a reload, thus no loops are possible. */ | |
2033 | r = manager_propagate_reload(UNIT(s)->manager, UNIT(s), JOB_FAIL, &error); | |
2034 | if (r < 0) | |
2035 | log_unit_warning(UNIT(s), "Failed to schedule propagation of reload: %s", bus_error_message(&error, -r)); | |
308d72dc LP |
2036 | } |
2037 | ||
034c6ed7 LP |
2038 | static void service_enter_reload(Service *s) { |
2039 | int r; | |
2040 | ||
2041 | assert(s); | |
2042 | ||
5e94833f | 2043 | service_unwatch_control_pid(s); |
95c906ae | 2044 | s->reload_result = SERVICE_SUCCESS; |
5e94833f | 2045 | |
117dcc57 ZJS |
2046 | s->control_command = s->exec_command[SERVICE_EXEC_RELOAD]; |
2047 | if (s->control_command) { | |
867b3b7d LP |
2048 | s->control_command_id = SERVICE_EXEC_RELOAD; |
2049 | ||
ecedd90f LP |
2050 | r = service_spawn(s, |
2051 | s->control_command, | |
21b2ce39 | 2052 | s->timeout_start_usec, |
1703fa41 | 2053 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL, |
ecedd90f LP |
2054 | &s->control_pid); |
2055 | if (r < 0) | |
034c6ed7 LP |
2056 | goto fail; |
2057 | ||
80876c20 LP |
2058 | service_set_state(s, SERVICE_RELOAD); |
2059 | } else | |
f42806df | 2060 | service_enter_running(s, SERVICE_SUCCESS); |
034c6ed7 LP |
2061 | |
2062 | return; | |
2063 | ||
2064 | fail: | |
f2341e0a | 2065 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'reload' task: %m"); |
f42806df LP |
2066 | s->reload_result = SERVICE_FAILURE_RESOURCES; |
2067 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
2068 | } |
2069 | ||
f42806df | 2070 | static void service_run_next_control(Service *s) { |
36c16a7c | 2071 | usec_t timeout; |
034c6ed7 LP |
2072 | int r; |
2073 | ||
2074 | assert(s); | |
2075 | assert(s->control_command); | |
2076 | assert(s->control_command->command_next); | |
2077 | ||
34e9ba66 | 2078 | assert(s->control_command_id != SERVICE_EXEC_START); |
034c6ed7 | 2079 | |
34e9ba66 | 2080 | s->control_command = s->control_command->command_next; |
5e94833f LP |
2081 | service_unwatch_control_pid(s); |
2082 | ||
36c16a7c LP |
2083 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
2084 | timeout = s->timeout_start_usec; | |
2085 | else | |
2086 | timeout = s->timeout_stop_usec; | |
2087 | ||
ecedd90f LP |
2088 | r = service_spawn(s, |
2089 | s->control_command, | |
36c16a7c | 2090 | timeout, |
1703fa41 | 2091 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL| |
136dc4c4 LP |
2092 | (IN_SET(s->control_command_id, SERVICE_EXEC_START_PRE, SERVICE_EXEC_STOP_POST) ? EXEC_APPLY_TTY_STDIN : 0)| |
2093 | (IN_SET(s->control_command_id, SERVICE_EXEC_STOP, SERVICE_EXEC_STOP_POST) ? EXEC_SETENV_RESULT : 0), | |
ecedd90f LP |
2094 | &s->control_pid); |
2095 | if (r < 0) | |
034c6ed7 LP |
2096 | goto fail; |
2097 | ||
2098 | return; | |
2099 | ||
2100 | fail: | |
f2341e0a | 2101 | log_unit_warning_errno(UNIT(s), r, "Failed to run next control task: %m"); |
034c6ed7 | 2102 | |
4cd9fa81 | 2103 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START_POST, SERVICE_STOP)) |
f42806df | 2104 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 | 2105 | else if (s->state == SERVICE_STOP_POST) |
f42806df | 2106 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
e2f3b44c | 2107 | else if (s->state == SERVICE_RELOAD) { |
f42806df LP |
2108 | s->reload_result = SERVICE_FAILURE_RESOURCES; |
2109 | service_enter_running(s, SERVICE_SUCCESS); | |
e2f3b44c | 2110 | } else |
f42806df | 2111 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
5cb5a6ff LP |
2112 | } |
2113 | ||
f42806df | 2114 | static void service_run_next_main(Service *s) { |
34e9ba66 LP |
2115 | pid_t pid; |
2116 | int r; | |
2117 | ||
2118 | assert(s); | |
867b3b7d LP |
2119 | assert(s->main_command); |
2120 | assert(s->main_command->command_next); | |
2121 | assert(s->type == SERVICE_ONESHOT); | |
34e9ba66 | 2122 | |
867b3b7d | 2123 | s->main_command = s->main_command->command_next; |
34e9ba66 LP |
2124 | service_unwatch_main_pid(s); |
2125 | ||
ecedd90f LP |
2126 | r = service_spawn(s, |
2127 | s->main_command, | |
21b2ce39 | 2128 | s->timeout_start_usec, |
1703fa41 | 2129 | EXEC_PASS_FDS|EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_SET_WATCHDOG, |
ecedd90f LP |
2130 | &pid); |
2131 | if (r < 0) | |
34e9ba66 LP |
2132 | goto fail; |
2133 | ||
2134 | service_set_main_pid(s, pid); | |
2135 | ||
2136 | return; | |
2137 | ||
2138 | fail: | |
f2341e0a | 2139 | log_unit_warning_errno(UNIT(s), r, "Failed to run next main task: %m"); |
f42806df | 2140 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
34e9ba66 LP |
2141 | } |
2142 | ||
87f0e418 LP |
2143 | static int service_start(Unit *u) { |
2144 | Service *s = SERVICE(u); | |
07299350 | 2145 | int r; |
5cb5a6ff LP |
2146 | |
2147 | assert(s); | |
2148 | ||
034c6ed7 LP |
2149 | /* We cannot fulfill this request right now, try again later |
2150 | * please! */ | |
a00973af LP |
2151 | if (IN_SET(s->state, |
2152 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, | |
2153 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) | |
5cb5a6ff LP |
2154 | return -EAGAIN; |
2155 | ||
034c6ed7 | 2156 | /* Already on it! */ |
a00973af | 2157 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST)) |
034c6ed7 LP |
2158 | return 0; |
2159 | ||
2e9d6c12 | 2160 | /* A service that will be restarted must be stopped first to |
7f2cddae | 2161 | * trigger BindsTo and/or OnFailure dependencies. If a user |
2e9d6c12 | 2162 | * does not want to wait for the holdoff time to elapse, the |
d4943dc7 LP |
2163 | * service should be manually restarted, not started. We |
2164 | * simply return EAGAIN here, so that any start jobs stay | |
2165 | * queued, and assume that the auto restart timer will | |
2166 | * eventually trigger the restart. */ | |
2167 | if (s->state == SERVICE_AUTO_RESTART) | |
a8bb2e65 | 2168 | return -EAGAIN; |
2e9d6c12 | 2169 | |
a00973af | 2170 | assert(IN_SET(s->state, SERVICE_DEAD, SERVICE_FAILED)); |
5cb5a6ff | 2171 | |
07299350 LP |
2172 | /* Make sure we don't enter a busy loop of some kind. */ |
2173 | r = unit_start_limit_test(u); | |
2174 | if (r < 0) { | |
2175 | service_enter_dead(s, SERVICE_FAILURE_START_LIMIT_HIT, false); | |
2176 | return r; | |
2177 | } | |
2178 | ||
4b58153d LP |
2179 | r = unit_acquire_invocation_id(u); |
2180 | if (r < 0) | |
2181 | return r; | |
2182 | ||
f42806df LP |
2183 | s->result = SERVICE_SUCCESS; |
2184 | s->reload_result = SERVICE_SUCCESS; | |
034c6ed7 | 2185 | s->main_pid_known = false; |
6dfa5494 | 2186 | s->main_pid_alien = false; |
47342320 | 2187 | s->forbid_restart = false; |
906c06f6 | 2188 | s->reset_accounting = true; |
034c6ed7 | 2189 | |
a1e58e8e | 2190 | s->status_text = mfree(s->status_text); |
8cfdb077 LP |
2191 | s->status_errno = 0; |
2192 | ||
308d72dc LP |
2193 | s->notify_state = NOTIFY_UNKNOWN; |
2194 | ||
2787d83c M |
2195 | s->watchdog_override_enable = false; |
2196 | s->watchdog_override_usec = 0; | |
2197 | ||
7a0019d3 LP |
2198 | /* This is not an automatic restart? Flush the restart counter then */ |
2199 | if (s->flush_n_restarts) { | |
2200 | s->n_restarts = 0; | |
2201 | s->flush_n_restarts = false; | |
2202 | } | |
2203 | ||
034c6ed7 | 2204 | service_enter_start_pre(s); |
82a2b6bb | 2205 | return 1; |
5cb5a6ff LP |
2206 | } |
2207 | ||
87f0e418 LP |
2208 | static int service_stop(Unit *u) { |
2209 | Service *s = SERVICE(u); | |
5cb5a6ff LP |
2210 | |
2211 | assert(s); | |
2212 | ||
a509f0e6 | 2213 | /* Don't create restart jobs from manual stops. */ |
47342320 | 2214 | s->forbid_restart = true; |
034c6ed7 | 2215 | |
e537352b | 2216 | /* Already on it */ |
a00973af LP |
2217 | if (IN_SET(s->state, |
2218 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, | |
2219 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) | |
e537352b LP |
2220 | return 0; |
2221 | ||
f0c7b229 | 2222 | /* A restart will be scheduled or is in progress. */ |
034c6ed7 | 2223 | if (s->state == SERVICE_AUTO_RESTART) { |
0c7f15b3 | 2224 | service_set_state(s, SERVICE_DEAD); |
034c6ed7 LP |
2225 | return 0; |
2226 | } | |
2227 | ||
3f6c78dc LP |
2228 | /* If there's already something running we go directly into |
2229 | * kill mode. */ | |
a00973af | 2230 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RELOAD)) { |
f42806df | 2231 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
3f6c78dc LP |
2232 | return 0; |
2233 | } | |
5cb5a6ff | 2234 | |
a00973af | 2235 | assert(IN_SET(s->state, SERVICE_RUNNING, SERVICE_EXITED)); |
3a762661 | 2236 | |
f42806df | 2237 | service_enter_stop(s, SERVICE_SUCCESS); |
82a2b6bb | 2238 | return 1; |
5cb5a6ff LP |
2239 | } |
2240 | ||
87f0e418 LP |
2241 | static int service_reload(Unit *u) { |
2242 | Service *s = SERVICE(u); | |
034c6ed7 LP |
2243 | |
2244 | assert(s); | |
2245 | ||
3742095b | 2246 | assert(IN_SET(s->state, SERVICE_RUNNING, SERVICE_EXITED)); |
034c6ed7 LP |
2247 | |
2248 | service_enter_reload(s); | |
2d018ae2 | 2249 | return 1; |
5cb5a6ff LP |
2250 | } |
2251 | ||
44a6b1b6 | 2252 | _pure_ static bool service_can_reload(Unit *u) { |
87f0e418 | 2253 | Service *s = SERVICE(u); |
034c6ed7 LP |
2254 | |
2255 | assert(s); | |
2256 | ||
2257 | return !!s->exec_command[SERVICE_EXEC_RELOAD]; | |
2258 | } | |
2259 | ||
e266c068 MS |
2260 | static unsigned service_exec_command_index(Unit *u, ServiceExecCommand id, ExecCommand *current) { |
2261 | Service *s = SERVICE(u); | |
2262 | unsigned idx = 0; | |
2263 | ExecCommand *first, *c; | |
2264 | ||
2265 | assert(s); | |
2266 | ||
2267 | first = s->exec_command[id]; | |
2268 | ||
2269 | /* Figure out where we are in the list by walking back to the beginning */ | |
2270 | for (c = current; c != first; c = c->command_prev) | |
2271 | idx++; | |
2272 | ||
2273 | return idx; | |
2274 | } | |
2275 | ||
2276 | static int service_serialize_exec_command(Unit *u, FILE *f, ExecCommand *command) { | |
2277 | Service *s = SERVICE(u); | |
2278 | ServiceExecCommand id; | |
2279 | unsigned idx; | |
2280 | const char *type; | |
2281 | char **arg; | |
e266c068 MS |
2282 | _cleanup_free_ char *args = NULL, *p = NULL; |
2283 | size_t allocated = 0, length = 0; | |
2284 | ||
2285 | assert(s); | |
2286 | assert(f); | |
2287 | ||
2288 | if (!command) | |
2289 | return 0; | |
2290 | ||
2291 | if (command == s->control_command) { | |
2292 | type = "control"; | |
2293 | id = s->control_command_id; | |
2294 | } else { | |
2295 | type = "main"; | |
2296 | id = SERVICE_EXEC_START; | |
2297 | } | |
2298 | ||
2299 | idx = service_exec_command_index(u, id, command); | |
2300 | ||
2301 | STRV_FOREACH(arg, command->argv) { | |
2302 | size_t n; | |
2303 | _cleanup_free_ char *e = NULL; | |
2304 | ||
2305 | e = xescape(*arg, WHITESPACE); | |
2306 | if (!e) | |
2307 | return -ENOMEM; | |
2308 | ||
2309 | n = strlen(e); | |
2310 | if (!GREEDY_REALLOC(args, allocated, length + 1 + n + 1)) | |
2311 | return -ENOMEM; | |
2312 | ||
2313 | if (length > 0) | |
2314 | args[length++] = ' '; | |
2315 | ||
2316 | memcpy(args + length, e, n); | |
2317 | length += n; | |
2318 | } | |
2319 | ||
2320 | if (!GREEDY_REALLOC(args, allocated, length + 1)) | |
2321 | return -ENOMEM; | |
2322 | args[length++] = 0; | |
2323 | ||
2324 | p = xescape(command->path, WHITESPACE); | |
2325 | if (!p) | |
2326 | return -ENOMEM; | |
2327 | ||
2328 | fprintf(f, "%s-command=%s %u %s %s\n", type, service_exec_command_to_string(id), idx, p, args); | |
2329 | ||
2330 | return 0; | |
2331 | } | |
2332 | ||
a16e1123 LP |
2333 | static int service_serialize(Unit *u, FILE *f, FDSet *fds) { |
2334 | Service *s = SERVICE(u); | |
2339fc93 | 2335 | ServiceFDStore *fs; |
a34ceba6 | 2336 | int r; |
a16e1123 LP |
2337 | |
2338 | assert(u); | |
2339 | assert(f); | |
2340 | assert(fds); | |
2341 | ||
2342 | unit_serialize_item(u, f, "state", service_state_to_string(s->state)); | |
f42806df LP |
2343 | unit_serialize_item(u, f, "result", service_result_to_string(s->result)); |
2344 | unit_serialize_item(u, f, "reload-result", service_result_to_string(s->reload_result)); | |
a16e1123 LP |
2345 | |
2346 | if (s->control_pid > 0) | |
f06db334 | 2347 | unit_serialize_item_format(u, f, "control-pid", PID_FMT, s->control_pid); |
a16e1123 | 2348 | |
5925dd3c | 2349 | if (s->main_pid_known && s->main_pid > 0) |
ccd06097 | 2350 | unit_serialize_item_format(u, f, "main-pid", PID_FMT, s->main_pid); |
a16e1123 LP |
2351 | |
2352 | unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known)); | |
de1d4f9b | 2353 | unit_serialize_item(u, f, "bus-name-good", yes_no(s->bus_name_good)); |
d8ccf5fd | 2354 | unit_serialize_item(u, f, "bus-name-owner", s->bus_name_owner); |
a16e1123 | 2355 | |
7a0019d3 | 2356 | unit_serialize_item_format(u, f, "n-restarts", "%u", s->n_restarts); |
7f923884 | 2357 | unit_serialize_item(u, f, "flush-n-restarts", yes_no(s->flush_n_restarts)); |
7a0019d3 | 2358 | |
a34ceba6 LP |
2359 | r = unit_serialize_item_escaped(u, f, "status-text", s->status_text); |
2360 | if (r < 0) | |
2361 | return r; | |
3a2776bc | 2362 | |
e266c068 MS |
2363 | service_serialize_exec_command(u, f, s->control_command); |
2364 | service_serialize_exec_command(u, f, s->main_command); | |
a16e1123 | 2365 | |
a34ceba6 LP |
2366 | r = unit_serialize_item_fd(u, f, fds, "stdin-fd", s->stdin_fd); |
2367 | if (r < 0) | |
2368 | return r; | |
2369 | r = unit_serialize_item_fd(u, f, fds, "stdout-fd", s->stdout_fd); | |
2370 | if (r < 0) | |
2371 | return r; | |
2372 | r = unit_serialize_item_fd(u, f, fds, "stderr-fd", s->stderr_fd); | |
2373 | if (r < 0) | |
2374 | return r; | |
e44da745 | 2375 | |
9dfb64f8 ZJS |
2376 | if (UNIT_ISSET(s->accept_socket)) { |
2377 | r = unit_serialize_item(u, f, "accept-socket", UNIT_DEREF(s->accept_socket)->id); | |
2378 | if (r < 0) | |
2379 | return r; | |
2380 | } | |
2381 | ||
a34ceba6 | 2382 | r = unit_serialize_item_fd(u, f, fds, "socket-fd", s->socket_fd); |
a34ceba6 LP |
2383 | if (r < 0) |
2384 | return r; | |
e44da745 | 2385 | |
2339fc93 | 2386 | LIST_FOREACH(fd_store, fs, s->fd_store) { |
8dd4c05b | 2387 | _cleanup_free_ char *c = NULL; |
2339fc93 LP |
2388 | int copy; |
2389 | ||
2390 | copy = fdset_put_dup(fds, fs->fd); | |
2391 | if (copy < 0) | |
2392 | return copy; | |
2393 | ||
8dd4c05b LP |
2394 | c = cescape(fs->fdname); |
2395 | ||
2396 | unit_serialize_item_format(u, f, "fd-store-fd", "%i %s", copy, strempty(c)); | |
2339fc93 LP |
2397 | } |
2398 | ||
ecdbca40 | 2399 | if (s->main_exec_status.pid > 0) { |
f06db334 LP |
2400 | unit_serialize_item_format(u, f, "main-exec-status-pid", PID_FMT, s->main_exec_status.pid); |
2401 | dual_timestamp_serialize(f, "main-exec-status-start", &s->main_exec_status.start_timestamp); | |
2402 | dual_timestamp_serialize(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp); | |
ecdbca40 | 2403 | |
799fd0fd | 2404 | if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) { |
f06db334 LP |
2405 | unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code); |
2406 | unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status); | |
ecdbca40 LP |
2407 | } |
2408 | } | |
f06db334 | 2409 | |
36b693a6 | 2410 | dual_timestamp_serialize(f, "watchdog-timestamp", &s->watchdog_timestamp); |
ecdbca40 | 2411 | |
a34ceba6 | 2412 | unit_serialize_item(u, f, "forbid-restart", yes_no(s->forbid_restart)); |
6aca9a58 | 2413 | |
2787d83c M |
2414 | if (s->watchdog_override_enable) |
2415 | unit_serialize_item_format(u, f, "watchdog-override-usec", USEC_FMT, s->watchdog_override_usec); | |
2416 | ||
a16e1123 LP |
2417 | return 0; |
2418 | } | |
2419 | ||
e266c068 MS |
2420 | static int service_deserialize_exec_command(Unit *u, const char *key, const char *value) { |
2421 | Service *s = SERVICE(u); | |
2422 | int r; | |
2423 | unsigned idx = 0, i; | |
2424 | bool control, found = false; | |
2425 | ServiceExecCommand id = _SERVICE_EXEC_COMMAND_INVALID; | |
2426 | ExecCommand *command = NULL; | |
6eeec374 | 2427 | _cleanup_free_ char *path = NULL; |
e266c068 MS |
2428 | _cleanup_strv_free_ char **argv = NULL; |
2429 | ||
2430 | enum ExecCommandState { | |
2431 | STATE_EXEC_COMMAND_TYPE, | |
2432 | STATE_EXEC_COMMAND_INDEX, | |
2433 | STATE_EXEC_COMMAND_PATH, | |
2434 | STATE_EXEC_COMMAND_ARGS, | |
2435 | _STATE_EXEC_COMMAND_MAX, | |
2436 | _STATE_EXEC_COMMAND_INVALID = -1, | |
2437 | } state; | |
2438 | ||
2439 | assert(s); | |
2440 | assert(key); | |
2441 | assert(value); | |
2442 | ||
2443 | control = streq(key, "control-command"); | |
2444 | ||
2445 | state = STATE_EXEC_COMMAND_TYPE; | |
2446 | ||
2447 | for (;;) { | |
2448 | _cleanup_free_ char *arg = NULL; | |
2449 | ||
2450 | r = extract_first_word(&value, &arg, NULL, EXTRACT_CUNESCAPE); | |
2451 | if (r == 0) | |
2452 | break; | |
2453 | else if (r < 0) | |
2454 | return r; | |
2455 | ||
2456 | switch (state) { | |
2457 | case STATE_EXEC_COMMAND_TYPE: | |
2458 | id = service_exec_command_from_string(arg); | |
2459 | if (id < 0) | |
2460 | return -EINVAL; | |
2461 | ||
2462 | state = STATE_EXEC_COMMAND_INDEX; | |
2463 | break; | |
2464 | case STATE_EXEC_COMMAND_INDEX: | |
2465 | r = safe_atou(arg, &idx); | |
2466 | if (r < 0) | |
2467 | return -EINVAL; | |
2468 | ||
2469 | state = STATE_EXEC_COMMAND_PATH; | |
2470 | break; | |
2471 | case STATE_EXEC_COMMAND_PATH: | |
2472 | path = arg; | |
2473 | arg = NULL; | |
2474 | state = STATE_EXEC_COMMAND_ARGS; | |
2475 | ||
2476 | if (!path_is_absolute(path)) | |
2477 | return -EINVAL; | |
2478 | break; | |
2479 | case STATE_EXEC_COMMAND_ARGS: | |
2480 | r = strv_extend(&argv, arg); | |
2481 | if (r < 0) | |
2482 | return -ENOMEM; | |
2483 | break; | |
2484 | default: | |
2485 | assert_not_reached("Unknown error at deserialization of exec command"); | |
2486 | break; | |
2487 | } | |
2488 | } | |
2489 | ||
2490 | if (state != STATE_EXEC_COMMAND_ARGS) | |
2491 | return -EINVAL; | |
2492 | ||
2493 | /* Let's check whether exec command on given offset matches data that we just deserialized */ | |
2494 | for (command = s->exec_command[id], i = 0; command; command = command->command_next, i++) { | |
2495 | if (i != idx) | |
2496 | continue; | |
2497 | ||
2498 | found = strv_equal(argv, command->argv) && streq(command->path, path); | |
2499 | break; | |
2500 | } | |
2501 | ||
2502 | if (!found) { | |
2503 | /* Command at the index we serialized is different, let's look for command that exactly | |
2504 | * matches but is on different index. If there is no such command we will not resume execution. */ | |
2505 | for (command = s->exec_command[id]; command; command = command->command_next) | |
2506 | if (strv_equal(command->argv, argv) && streq(command->path, path)) | |
2507 | break; | |
2508 | } | |
2509 | ||
2510 | if (command && control) | |
2511 | s->control_command = command; | |
2512 | else if (command) | |
2513 | s->main_command = command; | |
2514 | else | |
2515 | log_unit_warning(u, "Current command vanished from the unit file, execution of the command list won't be resumed."); | |
2516 | ||
2517 | return 0; | |
2518 | } | |
2519 | ||
a16e1123 LP |
2520 | static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { |
2521 | Service *s = SERVICE(u); | |
2339fc93 | 2522 | int r; |
a16e1123 LP |
2523 | |
2524 | assert(u); | |
2525 | assert(key); | |
2526 | assert(value); | |
2527 | assert(fds); | |
2528 | ||
2529 | if (streq(key, "state")) { | |
2530 | ServiceState state; | |
2531 | ||
117dcc57 ZJS |
2532 | state = service_state_from_string(value); |
2533 | if (state < 0) | |
f2341e0a | 2534 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
2535 | else |
2536 | s->deserialized_state = state; | |
f42806df LP |
2537 | } else if (streq(key, "result")) { |
2538 | ServiceResult f; | |
2539 | ||
2540 | f = service_result_from_string(value); | |
2541 | if (f < 0) | |
f2341e0a | 2542 | log_unit_debug(u, "Failed to parse result value: %s", value); |
f42806df LP |
2543 | else if (f != SERVICE_SUCCESS) |
2544 | s->result = f; | |
2545 | ||
2546 | } else if (streq(key, "reload-result")) { | |
2547 | ServiceResult f; | |
2548 | ||
2549 | f = service_result_from_string(value); | |
2550 | if (f < 0) | |
f2341e0a | 2551 | log_unit_debug(u, "Failed to parse reload result value: %s", value); |
f42806df LP |
2552 | else if (f != SERVICE_SUCCESS) |
2553 | s->reload_result = f; | |
a16e1123 | 2554 | |
a16e1123 | 2555 | } else if (streq(key, "control-pid")) { |
5925dd3c | 2556 | pid_t pid; |
a16e1123 | 2557 | |
e364ad06 | 2558 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2559 | log_unit_debug(u, "Failed to parse control-pid value: %s", value); |
a16e1123 | 2560 | else |
e55224ca | 2561 | s->control_pid = pid; |
a16e1123 | 2562 | } else if (streq(key, "main-pid")) { |
5925dd3c | 2563 | pid_t pid; |
a16e1123 | 2564 | |
e364ad06 | 2565 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2566 | log_unit_debug(u, "Failed to parse main-pid value: %s", value); |
7400b9d2 LP |
2567 | else { |
2568 | service_set_main_pid(s, pid); | |
2569 | unit_watch_pid(UNIT(s), pid); | |
2570 | } | |
a16e1123 LP |
2571 | } else if (streq(key, "main-pid-known")) { |
2572 | int b; | |
2573 | ||
117dcc57 ZJS |
2574 | b = parse_boolean(value); |
2575 | if (b < 0) | |
f2341e0a | 2576 | log_unit_debug(u, "Failed to parse main-pid-known value: %s", value); |
a16e1123 LP |
2577 | else |
2578 | s->main_pid_known = b; | |
de1d4f9b WF |
2579 | } else if (streq(key, "bus-name-good")) { |
2580 | int b; | |
2581 | ||
2582 | b = parse_boolean(value); | |
2583 | if (b < 0) | |
2584 | log_unit_debug(u, "Failed to parse bus-name-good value: %s", value); | |
2585 | else | |
2586 | s->bus_name_good = b; | |
d8ccf5fd DM |
2587 | } else if (streq(key, "bus-name-owner")) { |
2588 | r = free_and_strdup(&s->bus_name_owner, value); | |
2589 | if (r < 0) | |
2590 | log_unit_error_errno(u, r, "Unable to deserialize current bus owner %s: %m", value); | |
3a2776bc LP |
2591 | } else if (streq(key, "status-text")) { |
2592 | char *t; | |
2593 | ||
f2341e0a LP |
2594 | r = cunescape(value, 0, &t); |
2595 | if (r < 0) | |
2596 | log_unit_debug_errno(u, r, "Failed to unescape status text: %s", value); | |
117dcc57 | 2597 | else { |
3a2776bc LP |
2598 | free(s->status_text); |
2599 | s->status_text = t; | |
2600 | } | |
2601 | ||
9dfb64f8 ZJS |
2602 | } else if (streq(key, "accept-socket")) { |
2603 | Unit *socket; | |
2604 | ||
2605 | r = manager_load_unit(u->manager, value, NULL, NULL, &socket); | |
2606 | if (r < 0) | |
2607 | log_unit_debug_errno(u, r, "Failed to load accept-socket unit: %s", value); | |
2608 | else { | |
2609 | unit_ref_set(&s->accept_socket, socket); | |
2610 | SOCKET(socket)->n_connections++; | |
2611 | } | |
2612 | ||
a16e1123 LP |
2613 | } else if (streq(key, "socket-fd")) { |
2614 | int fd; | |
2615 | ||
2616 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 2617 | log_unit_debug(u, "Failed to parse socket-fd value: %s", value); |
a16e1123 | 2618 | else { |
574634bc | 2619 | asynchronous_close(s->socket_fd); |
a16e1123 LP |
2620 | s->socket_fd = fdset_remove(fds, fd); |
2621 | } | |
2339fc93 | 2622 | } else if (streq(key, "fd-store-fd")) { |
8dd4c05b LP |
2623 | const char *fdv; |
2624 | size_t pf; | |
2339fc93 LP |
2625 | int fd; |
2626 | ||
8dd4c05b LP |
2627 | pf = strcspn(value, WHITESPACE); |
2628 | fdv = strndupa(value, pf); | |
2629 | ||
2630 | if (safe_atoi(fdv, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 2631 | log_unit_debug(u, "Failed to parse fd-store-fd value: %s", value); |
2339fc93 | 2632 | else { |
8dd4c05b LP |
2633 | _cleanup_free_ char *t = NULL; |
2634 | const char *fdn; | |
2635 | ||
2636 | fdn = value + pf; | |
2637 | fdn += strspn(fdn, WHITESPACE); | |
2638 | (void) cunescape(fdn, 0, &t); | |
2639 | ||
2640 | r = service_add_fd_store(s, fd, t); | |
2339fc93 | 2641 | if (r < 0) |
f2341e0a | 2642 | log_unit_error_errno(u, r, "Failed to add fd to store: %m"); |
9021ff17 | 2643 | else |
2339fc93 LP |
2644 | fdset_remove(fds, fd); |
2645 | } | |
2646 | ||
ecdbca40 LP |
2647 | } else if (streq(key, "main-exec-status-pid")) { |
2648 | pid_t pid; | |
2649 | ||
e364ad06 | 2650 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2651 | log_unit_debug(u, "Failed to parse main-exec-status-pid value: %s", value); |
ecdbca40 LP |
2652 | else |
2653 | s->main_exec_status.pid = pid; | |
2654 | } else if (streq(key, "main-exec-status-code")) { | |
2655 | int i; | |
2656 | ||
e364ad06 | 2657 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 2658 | log_unit_debug(u, "Failed to parse main-exec-status-code value: %s", value); |
ecdbca40 LP |
2659 | else |
2660 | s->main_exec_status.code = i; | |
2661 | } else if (streq(key, "main-exec-status-status")) { | |
2662 | int i; | |
2663 | ||
e364ad06 | 2664 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 2665 | log_unit_debug(u, "Failed to parse main-exec-status-status value: %s", value); |
ecdbca40 LP |
2666 | else |
2667 | s->main_exec_status.status = i; | |
799fd0fd LP |
2668 | } else if (streq(key, "main-exec-status-start")) |
2669 | dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp); | |
2670 | else if (streq(key, "main-exec-status-exit")) | |
2671 | dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp); | |
a6927d7f MO |
2672 | else if (streq(key, "watchdog-timestamp")) |
2673 | dual_timestamp_deserialize(value, &s->watchdog_timestamp); | |
613b411c | 2674 | else if (streq(key, "forbid-restart")) { |
6aca9a58 SE |
2675 | int b; |
2676 | ||
2677 | b = parse_boolean(value); | |
2678 | if (b < 0) | |
f2341e0a | 2679 | log_unit_debug(u, "Failed to parse forbid-restart value: %s", value); |
6aca9a58 SE |
2680 | else |
2681 | s->forbid_restart = b; | |
a34ceba6 LP |
2682 | } else if (streq(key, "stdin-fd")) { |
2683 | int fd; | |
2684 | ||
2685 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2686 | log_unit_debug(u, "Failed to parse stdin-fd value: %s", value); | |
2687 | else { | |
2688 | asynchronous_close(s->stdin_fd); | |
2689 | s->stdin_fd = fdset_remove(fds, fd); | |
1e22b5cd | 2690 | s->exec_context.stdio_as_fds = true; |
a34ceba6 LP |
2691 | } |
2692 | } else if (streq(key, "stdout-fd")) { | |
2693 | int fd; | |
2694 | ||
2695 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2696 | log_unit_debug(u, "Failed to parse stdout-fd value: %s", value); | |
2697 | else { | |
2698 | asynchronous_close(s->stdout_fd); | |
2699 | s->stdout_fd = fdset_remove(fds, fd); | |
1e22b5cd | 2700 | s->exec_context.stdio_as_fds = true; |
a34ceba6 LP |
2701 | } |
2702 | } else if (streq(key, "stderr-fd")) { | |
2703 | int fd; | |
2704 | ||
2705 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2706 | log_unit_debug(u, "Failed to parse stderr-fd value: %s", value); | |
2707 | else { | |
2708 | asynchronous_close(s->stderr_fd); | |
2709 | s->stderr_fd = fdset_remove(fds, fd); | |
1e22b5cd | 2710 | s->exec_context.stdio_as_fds = true; |
a34ceba6 | 2711 | } |
2787d83c M |
2712 | } else if (streq(key, "watchdog-override-usec")) { |
2713 | usec_t watchdog_override_usec; | |
2714 | if (timestamp_deserialize(value, &watchdog_override_usec) < 0) | |
2715 | log_unit_debug(u, "Failed to parse watchdog_override_usec value: %s", value); | |
2716 | else { | |
2717 | s->watchdog_override_enable = true; | |
2718 | s->watchdog_override_usec = watchdog_override_usec; | |
2719 | } | |
e266c068 MS |
2720 | } else if (STR_IN_SET(key, "main-command", "control-command")) { |
2721 | r = service_deserialize_exec_command(u, key, value); | |
2722 | if (r < 0) | |
2723 | log_unit_debug_errno(u, r, "Failed to parse serialized command \"%s\": %m", value); | |
7a0019d3 LP |
2724 | |
2725 | } else if (streq(key, "n-restarts")) { | |
2726 | r = safe_atou(value, &s->n_restarts); | |
2727 | if (r < 0) | |
2728 | log_unit_debug_errno(u, r, "Failed to parse serialized restart counter '%s': %m", value); | |
2729 | ||
2730 | } else if (streq(key, "flush-n-restarts")) { | |
2731 | r = parse_boolean(value); | |
2732 | if (r < 0) | |
2733 | log_unit_debug_errno(u, r, "Failed to parse serialized flush restart counter setting '%s': %m", value); | |
2734 | else | |
2735 | s->flush_n_restarts = r; | |
c17ec25e | 2736 | } else |
f2341e0a | 2737 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
2738 | |
2739 | return 0; | |
2740 | } | |
2741 | ||
44a6b1b6 | 2742 | _pure_ static UnitActiveState service_active_state(Unit *u) { |
e056b01d LP |
2743 | const UnitActiveState *table; |
2744 | ||
87f0e418 | 2745 | assert(u); |
5cb5a6ff | 2746 | |
e056b01d LP |
2747 | table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
2748 | ||
2749 | return table[SERVICE(u)->state]; | |
034c6ed7 LP |
2750 | } |
2751 | ||
10a94420 LP |
2752 | static const char *service_sub_state_to_string(Unit *u) { |
2753 | assert(u); | |
2754 | ||
2755 | return service_state_to_string(SERVICE(u)->state); | |
2756 | } | |
2757 | ||
701cc384 LP |
2758 | static bool service_check_gc(Unit *u) { |
2759 | Service *s = SERVICE(u); | |
2760 | ||
2761 | assert(s); | |
2762 | ||
6d55002a LP |
2763 | /* Never clean up services that still have a process around, |
2764 | * even if the service is formally dead. */ | |
2765 | if (cgroup_good(s) > 0 || | |
2766 | main_pid_good(s) > 0 || | |
2767 | control_pid_good(s) > 0) | |
2768 | return true; | |
2769 | ||
6d55002a LP |
2770 | return false; |
2771 | } | |
2772 | ||
3a111838 MS |
2773 | static int service_retry_pid_file(Service *s) { |
2774 | int r; | |
2775 | ||
2776 | assert(s->pid_file); | |
3742095b | 2777 | assert(IN_SET(s->state, SERVICE_START, SERVICE_START_POST)); |
3a111838 MS |
2778 | |
2779 | r = service_load_pid_file(s, false); | |
2780 | if (r < 0) | |
2781 | return r; | |
2782 | ||
2783 | service_unwatch_pid_file(s); | |
2784 | ||
f42806df | 2785 | service_enter_running(s, SERVICE_SUCCESS); |
3a111838 MS |
2786 | return 0; |
2787 | } | |
2788 | ||
2789 | static int service_watch_pid_file(Service *s) { | |
2790 | int r; | |
2791 | ||
f2341e0a | 2792 | log_unit_debug(UNIT(s), "Setting watch for PID file %s", s->pid_file_pathspec->path); |
8bb2d17d | 2793 | |
718db961 | 2794 | r = path_spec_watch(s->pid_file_pathspec, service_dispatch_io); |
3a111838 MS |
2795 | if (r < 0) |
2796 | goto fail; | |
2797 | ||
2798 | /* the pidfile might have appeared just before we set the watch */ | |
f2341e0a | 2799 | log_unit_debug(UNIT(s), "Trying to read PID file %s in case it changed", s->pid_file_pathspec->path); |
3a111838 MS |
2800 | service_retry_pid_file(s); |
2801 | ||
2802 | return 0; | |
2803 | fail: | |
f2341e0a | 2804 | log_unit_error_errno(UNIT(s), r, "Failed to set a watch for PID file %s: %m", s->pid_file_pathspec->path); |
3a111838 MS |
2805 | service_unwatch_pid_file(s); |
2806 | return r; | |
2807 | } | |
2808 | ||
2809 | static int service_demand_pid_file(Service *s) { | |
2810 | PathSpec *ps; | |
2811 | ||
2812 | assert(s->pid_file); | |
2813 | assert(!s->pid_file_pathspec); | |
2814 | ||
2815 | ps = new0(PathSpec, 1); | |
2816 | if (!ps) | |
2817 | return -ENOMEM; | |
2818 | ||
718db961 | 2819 | ps->unit = UNIT(s); |
3a111838 MS |
2820 | ps->path = strdup(s->pid_file); |
2821 | if (!ps->path) { | |
2822 | free(ps); | |
2823 | return -ENOMEM; | |
2824 | } | |
2825 | ||
2826 | path_kill_slashes(ps->path); | |
2827 | ||
2828 | /* PATH_CHANGED would not be enough. There are daemons (sendmail) that | |
2829 | * keep their PID file open all the time. */ | |
2830 | ps->type = PATH_MODIFIED; | |
2831 | ps->inotify_fd = -1; | |
2832 | ||
2833 | s->pid_file_pathspec = ps; | |
2834 | ||
2835 | return service_watch_pid_file(s); | |
2836 | } | |
2837 | ||
718db961 | 2838 | static int service_dispatch_io(sd_event_source *source, int fd, uint32_t events, void *userdata) { |
e14c2802 LP |
2839 | PathSpec *p = userdata; |
2840 | Service *s; | |
2841 | ||
2842 | assert(p); | |
2843 | ||
2844 | s = SERVICE(p->unit); | |
3a111838 MS |
2845 | |
2846 | assert(s); | |
2847 | assert(fd >= 0); | |
3742095b | 2848 | assert(IN_SET(s->state, SERVICE_START, SERVICE_START_POST)); |
3a111838 | 2849 | assert(s->pid_file_pathspec); |
57020a3a | 2850 | assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd)); |
3a111838 | 2851 | |
f2341e0a | 2852 | log_unit_debug(UNIT(s), "inotify event"); |
3a111838 | 2853 | |
e14c2802 | 2854 | if (path_spec_fd_event(p, events) < 0) |
3a111838 MS |
2855 | goto fail; |
2856 | ||
2857 | if (service_retry_pid_file(s) == 0) | |
718db961 | 2858 | return 0; |
3a111838 MS |
2859 | |
2860 | if (service_watch_pid_file(s) < 0) | |
2861 | goto fail; | |
2862 | ||
718db961 LP |
2863 | return 0; |
2864 | ||
3a111838 MS |
2865 | fail: |
2866 | service_unwatch_pid_file(s); | |
f42806df | 2867 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
718db961 | 2868 | return 0; |
3a111838 MS |
2869 | } |
2870 | ||
a911bb9a LP |
2871 | static void service_notify_cgroup_empty_event(Unit *u) { |
2872 | Service *s = SERVICE(u); | |
2873 | ||
2874 | assert(u); | |
2875 | ||
f2341e0a | 2876 | log_unit_debug(u, "cgroup is empty"); |
a911bb9a LP |
2877 | |
2878 | switch (s->state) { | |
2879 | ||
2880 | /* Waiting for SIGCHLD is usually more interesting, | |
2881 | * because it includes return codes/signals. Which is | |
2882 | * why we ignore the cgroup events for most cases, | |
2883 | * except when we don't know pid which to expect the | |
2884 | * SIGCHLD for. */ | |
2885 | ||
2886 | case SERVICE_START: | |
3c751b1b LP |
2887 | if (s->type == SERVICE_NOTIFY && |
2888 | main_pid_good(s) == 0 && | |
2889 | control_pid_good(s) == 0) { | |
3d474ef7 | 2890 | /* No chance of getting a ready notification anymore */ |
c3fda31d | 2891 | service_enter_stop_post(s, SERVICE_FAILURE_PROTOCOL); |
71e529fc JW |
2892 | break; |
2893 | } | |
2894 | ||
2895 | /* Fall through */ | |
2896 | ||
2897 | case SERVICE_START_POST: | |
3c751b1b LP |
2898 | if (s->pid_file_pathspec && |
2899 | main_pid_good(s) == 0 && | |
2900 | control_pid_good(s) == 0) { | |
2901 | ||
3d474ef7 | 2902 | /* Give up hoping for the daemon to write its PID file */ |
f2341e0a | 2903 | log_unit_warning(u, "Daemon never wrote its PID file. Failing."); |
8bb2d17d | 2904 | |
a911bb9a LP |
2905 | service_unwatch_pid_file(s); |
2906 | if (s->state == SERVICE_START) | |
c3fda31d | 2907 | service_enter_stop_post(s, SERVICE_FAILURE_PROTOCOL); |
a911bb9a | 2908 | else |
c35755fb | 2909 | service_enter_stop(s, SERVICE_FAILURE_PROTOCOL); |
a911bb9a LP |
2910 | } |
2911 | break; | |
2912 | ||
2913 | case SERVICE_RUNNING: | |
2914 | /* service_enter_running() will figure out what to do */ | |
2915 | service_enter_running(s, SERVICE_SUCCESS); | |
2916 | break; | |
2917 | ||
db2cb23b | 2918 | case SERVICE_STOP_SIGABRT: |
a911bb9a LP |
2919 | case SERVICE_STOP_SIGTERM: |
2920 | case SERVICE_STOP_SIGKILL: | |
2921 | ||
b13ddbbc | 2922 | if (main_pid_good(s) <= 0 && control_pid_good(s) <= 0) |
a911bb9a LP |
2923 | service_enter_stop_post(s, SERVICE_SUCCESS); |
2924 | ||
2925 | break; | |
2926 | ||
2927 | case SERVICE_STOP_POST: | |
2928 | case SERVICE_FINAL_SIGTERM: | |
2929 | case SERVICE_FINAL_SIGKILL: | |
b13ddbbc | 2930 | if (main_pid_good(s) <= 0 && control_pid_good(s) <= 0) |
a911bb9a LP |
2931 | service_enter_dead(s, SERVICE_SUCCESS, true); |
2932 | ||
2933 | break; | |
2934 | ||
2935 | default: | |
2936 | ; | |
2937 | } | |
2938 | } | |
2939 | ||
87f0e418 LP |
2940 | static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
2941 | Service *s = SERVICE(u); | |
f42806df | 2942 | ServiceResult f; |
5cb5a6ff LP |
2943 | |
2944 | assert(s); | |
034c6ed7 LP |
2945 | assert(pid >= 0); |
2946 | ||
1f0958f6 | 2947 | if (is_clean_exit(code, status, s->type == SERVICE_ONESHOT ? EXIT_CLEAN_COMMAND : EXIT_CLEAN_DAEMON, &s->success_status)) |
f42806df LP |
2948 | f = SERVICE_SUCCESS; |
2949 | else if (code == CLD_EXITED) | |
2950 | f = SERVICE_FAILURE_EXIT_CODE; | |
2951 | else if (code == CLD_KILLED) | |
2952 | f = SERVICE_FAILURE_SIGNAL; | |
2953 | else if (code == CLD_DUMPED) | |
2954 | f = SERVICE_FAILURE_CORE_DUMP; | |
d06dacd0 | 2955 | else |
cfc4eb4c | 2956 | assert_not_reached("Unknown code"); |
034c6ed7 LP |
2957 | |
2958 | if (s->main_pid == pid) { | |
db01f8b3 MS |
2959 | /* Forking services may occasionally move to a new PID. |
2960 | * As long as they update the PID file before exiting the old | |
2961 | * PID, they're fine. */ | |
5375410b | 2962 | if (service_load_pid_file(s, false) == 0) |
db01f8b3 | 2963 | return; |
034c6ed7 | 2964 | |
034c6ed7 | 2965 | s->main_pid = 0; |
6ea832a2 | 2966 | exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status); |
034c6ed7 | 2967 | |
867b3b7d | 2968 | if (s->main_command) { |
fbeefb45 LP |
2969 | /* If this is not a forking service than the |
2970 | * main process got started and hence we copy | |
2971 | * the exit status so that it is recorded both | |
2972 | * as main and as control process exit | |
2973 | * status */ | |
2974 | ||
867b3b7d | 2975 | s->main_command->exec_status = s->main_exec_status; |
b708e7ce | 2976 | |
3ed0cd26 | 2977 | if (s->main_command->flags & EXEC_COMMAND_IGNORE_FAILURE) |
f42806df | 2978 | f = SERVICE_SUCCESS; |
fbeefb45 LP |
2979 | } else if (s->exec_command[SERVICE_EXEC_START]) { |
2980 | ||
2981 | /* If this is a forked process, then we should | |
2982 | * ignore the return value if this was | |
2983 | * configured for the starter process */ | |
2984 | ||
3ed0cd26 | 2985 | if (s->exec_command[SERVICE_EXEC_START]->flags & EXEC_COMMAND_IGNORE_FAILURE) |
fbeefb45 | 2986 | f = SERVICE_SUCCESS; |
034c6ed7 LP |
2987 | } |
2988 | ||
5368222d LP |
2989 | /* When this is a successful exit, let's log about the exit code on DEBUG level. If this is a failure |
2990 | * and the process exited on its own via exit(), then let's make this a NOTICE, under the assumption | |
2991 | * that the service already logged the reason at a higher log level on its own. However, if the service | |
2992 | * died due to a signal, then it most likely didn't say anything about any reason, hence let's raise | |
2993 | * our log level to WARNING then. */ | |
2994 | ||
2995 | log_struct(f == SERVICE_SUCCESS ? LOG_DEBUG : | |
2996 | (code == CLD_EXITED ? LOG_NOTICE : LOG_WARNING), | |
f2341e0a LP |
2997 | LOG_UNIT_MESSAGE(u, "Main process exited, code=%s, status=%i/%s", |
2998 | sigchld_code_to_string(code), status, | |
e2cc6eca LP |
2999 | strna(code == CLD_EXITED |
3000 | ? exit_status_to_string(status, EXIT_STATUS_FULL) | |
3001 | : signal_to_string(status))), | |
f2341e0a LP |
3002 | "EXIT_CODE=%s", sigchld_code_to_string(code), |
3003 | "EXIT_STATUS=%i", status, | |
ba360bb0 | 3004 | LOG_UNIT_ID(u), |
f1c50bec | 3005 | LOG_UNIT_INVOCATION_ID(u), |
f2341e0a | 3006 | NULL); |
f42806df | 3007 | |
a0fef983 | 3008 | if (s->result == SERVICE_SUCCESS) |
f42806df | 3009 | s->result = f; |
034c6ed7 | 3010 | |
867b3b7d LP |
3011 | if (s->main_command && |
3012 | s->main_command->command_next && | |
b58aeb70 | 3013 | s->type == SERVICE_ONESHOT && |
f42806df | 3014 | f == SERVICE_SUCCESS) { |
034c6ed7 | 3015 | |
34e9ba66 LP |
3016 | /* There is another command to * |
3017 | * execute, so let's do that. */ | |
034c6ed7 | 3018 | |
f2341e0a | 3019 | log_unit_debug(u, "Running next main command for state %s.", service_state_to_string(s->state)); |
f42806df | 3020 | service_run_next_main(s); |
034c6ed7 | 3021 | |
34e9ba66 LP |
3022 | } else { |
3023 | ||
3024 | /* The service exited, so the service is officially | |
3025 | * gone. */ | |
867b3b7d | 3026 | s->main_command = NULL; |
34e9ba66 LP |
3027 | |
3028 | switch (s->state) { | |
3029 | ||
3030 | case SERVICE_START_POST: | |
3031 | case SERVICE_RELOAD: | |
3032 | case SERVICE_STOP: | |
3033 | /* Need to wait until the operation is | |
3034 | * done */ | |
c4653a4d | 3035 | break; |
7d55e835 | 3036 | |
34e9ba66 LP |
3037 | case SERVICE_START: |
3038 | if (s->type == SERVICE_ONESHOT) { | |
3039 | /* This was our main goal, so let's go on */ | |
f42806df | 3040 | if (f == SERVICE_SUCCESS) |
34e9ba66 LP |
3041 | service_enter_start_post(s); |
3042 | else | |
c3fda31d | 3043 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
34e9ba66 | 3044 | break; |
3d474ef7 JW |
3045 | } else if (s->type == SERVICE_NOTIFY) { |
3046 | /* Only enter running through a notification, so that the | |
3047 | * SERVICE_START state signifies that no ready notification | |
3048 | * has been received */ | |
3049 | if (f != SERVICE_SUCCESS) | |
c3fda31d | 3050 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
df66b93f JW |
3051 | else if (!s->remain_after_exit || s->notify_access == NOTIFY_MAIN) |
3052 | /* The service has never been and will never be active */ | |
c3fda31d | 3053 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_PROTOCOL); |
3d474ef7 | 3054 | break; |
34e9ba66 | 3055 | } |
034c6ed7 | 3056 | |
bfba3256 LP |
3057 | /* Fall through */ |
3058 | ||
34e9ba66 | 3059 | case SERVICE_RUNNING: |
f42806df | 3060 | service_enter_running(s, f); |
34e9ba66 | 3061 | break; |
034c6ed7 | 3062 | |
db2cb23b | 3063 | case SERVICE_STOP_SIGABRT: |
34e9ba66 LP |
3064 | case SERVICE_STOP_SIGTERM: |
3065 | case SERVICE_STOP_SIGKILL: | |
5cb5a6ff | 3066 | |
b13ddbbc | 3067 | if (control_pid_good(s) <= 0) |
f42806df | 3068 | service_enter_stop_post(s, f); |
5cb5a6ff | 3069 | |
34e9ba66 LP |
3070 | /* If there is still a control process, wait for that first */ |
3071 | break; | |
3072 | ||
bf108e55 LP |
3073 | case SERVICE_STOP_POST: |
3074 | case SERVICE_FINAL_SIGTERM: | |
3075 | case SERVICE_FINAL_SIGKILL: | |
3076 | ||
b13ddbbc | 3077 | if (control_pid_good(s) <= 0) |
bf108e55 LP |
3078 | service_enter_dead(s, f, true); |
3079 | break; | |
3080 | ||
34e9ba66 LP |
3081 | default: |
3082 | assert_not_reached("Uh, main process died at wrong time."); | |
3083 | } | |
034c6ed7 | 3084 | } |
5cb5a6ff | 3085 | |
034c6ed7 | 3086 | } else if (s->control_pid == pid) { |
34e9ba66 LP |
3087 | s->control_pid = 0; |
3088 | ||
b708e7ce | 3089 | if (s->control_command) { |
8bb2d17d | 3090 | exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status); |
a16e1123 | 3091 | |
3ed0cd26 | 3092 | if (s->control_command->flags & EXEC_COMMAND_IGNORE_FAILURE) |
f42806df | 3093 | f = SERVICE_SUCCESS; |
b708e7ce LP |
3094 | } |
3095 | ||
f2341e0a LP |
3096 | log_unit_full(u, f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, 0, |
3097 | "Control process exited, code=%s status=%i", | |
3098 | sigchld_code_to_string(code), status); | |
f42806df | 3099 | |
a0fef983 | 3100 | if (s->result == SERVICE_SUCCESS) |
f42806df | 3101 | s->result = f; |
034c6ed7 | 3102 | |
88f3e0c9 LP |
3103 | /* Immediately get rid of the cgroup, so that the |
3104 | * kernel doesn't delay the cgroup empty messages for | |
3105 | * the service cgroup any longer than necessary */ | |
4ad49000 | 3106 | service_kill_control_processes(s); |
88f3e0c9 | 3107 | |
34e9ba66 LP |
3108 | if (s->control_command && |
3109 | s->control_command->command_next && | |
f42806df | 3110 | f == SERVICE_SUCCESS) { |
034c6ed7 LP |
3111 | |
3112 | /* There is another command to * | |
3113 | * execute, so let's do that. */ | |
3114 | ||
f2341e0a | 3115 | log_unit_debug(u, "Running next control command for state %s.", service_state_to_string(s->state)); |
f42806df | 3116 | service_run_next_control(s); |
034c6ed7 | 3117 | |
80876c20 | 3118 | } else { |
034c6ed7 LP |
3119 | /* No further commands for this step, so let's |
3120 | * figure out what to do next */ | |
3121 | ||
a16e1123 LP |
3122 | s->control_command = NULL; |
3123 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
3124 | ||
f2341e0a | 3125 | log_unit_debug(u, "Got final SIGCHLD for state %s.", service_state_to_string(s->state)); |
bd982a8b | 3126 | |
034c6ed7 LP |
3127 | switch (s->state) { |
3128 | ||
3129 | case SERVICE_START_PRE: | |
f42806df | 3130 | if (f == SERVICE_SUCCESS) |
034c6ed7 LP |
3131 | service_enter_start(s); |
3132 | else | |
c3fda31d | 3133 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
034c6ed7 LP |
3134 | break; |
3135 | ||
3136 | case SERVICE_START: | |
bfba3256 LP |
3137 | if (s->type != SERVICE_FORKING) |
3138 | /* Maybe spurious event due to a reload that changed the type? */ | |
3139 | break; | |
034c6ed7 | 3140 | |
f42806df | 3141 | if (f != SERVICE_SUCCESS) { |
c3fda31d | 3142 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
3a111838 MS |
3143 | break; |
3144 | } | |
034c6ed7 | 3145 | |
3a111838 | 3146 | if (s->pid_file) { |
f42806df LP |
3147 | bool has_start_post; |
3148 | int r; | |
3149 | ||
3a111838 MS |
3150 | /* Let's try to load the pid file here if we can. |
3151 | * The PID file might actually be created by a START_POST | |
3152 | * script. In that case don't worry if the loading fails. */ | |
f42806df LP |
3153 | |
3154 | has_start_post = !!s->exec_command[SERVICE_EXEC_START_POST]; | |
3155 | r = service_load_pid_file(s, !has_start_post); | |
3a111838 MS |
3156 | if (!has_start_post && r < 0) { |
3157 | r = service_demand_pid_file(s); | |
b13ddbbc | 3158 | if (r < 0 || cgroup_good(s) == 0) |
c3fda31d | 3159 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_PROTOCOL); |
3a111838 MS |
3160 | break; |
3161 | } | |
034c6ed7 | 3162 | } else |
783e05d6 | 3163 | service_search_main_pid(s); |
034c6ed7 | 3164 | |
3a111838 | 3165 | service_enter_start_post(s); |
034c6ed7 LP |
3166 | break; |
3167 | ||
3168 | case SERVICE_START_POST: | |
f42806df | 3169 | if (f != SERVICE_SUCCESS) { |
ce359e98 | 3170 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
2096e009 | 3171 | break; |
034c6ed7 LP |
3172 | } |
3173 | ||
2096e009 | 3174 | if (s->pid_file) { |
f42806df LP |
3175 | int r; |
3176 | ||
3177 | r = service_load_pid_file(s, true); | |
2096e009 MS |
3178 | if (r < 0) { |
3179 | r = service_demand_pid_file(s); | |
b13ddbbc | 3180 | if (r < 0 || cgroup_good(s) == 0) |
c35755fb | 3181 | service_enter_stop(s, SERVICE_FAILURE_PROTOCOL); |
2096e009 MS |
3182 | break; |
3183 | } | |
3184 | } else | |
783e05d6 | 3185 | service_search_main_pid(s); |
2096e009 | 3186 | |
f42806df | 3187 | service_enter_running(s, SERVICE_SUCCESS); |
3185a36b | 3188 | break; |
034c6ed7 LP |
3189 | |
3190 | case SERVICE_RELOAD: | |
7236ce6e ZJS |
3191 | if (f == SERVICE_SUCCESS) |
3192 | if (service_load_pid_file(s, true) < 0) | |
3193 | service_search_main_pid(s); | |
3185a36b | 3194 | |
f42806df LP |
3195 | s->reload_result = f; |
3196 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
3197 | break; |
3198 | ||
3199 | case SERVICE_STOP: | |
f42806df | 3200 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
034c6ed7 LP |
3201 | break; |
3202 | ||
db2cb23b | 3203 | case SERVICE_STOP_SIGABRT: |
034c6ed7 LP |
3204 | case SERVICE_STOP_SIGTERM: |
3205 | case SERVICE_STOP_SIGKILL: | |
3206 | if (main_pid_good(s) <= 0) | |
f42806df | 3207 | service_enter_stop_post(s, f); |
034c6ed7 LP |
3208 | |
3209 | /* If there is still a service | |
3210 | * process around, wait until | |
3211 | * that one quit, too */ | |
3212 | break; | |
3213 | ||
3214 | case SERVICE_STOP_POST: | |
3215 | case SERVICE_FINAL_SIGTERM: | |
3216 | case SERVICE_FINAL_SIGKILL: | |
bf108e55 LP |
3217 | if (main_pid_good(s) <= 0) |
3218 | service_enter_dead(s, f, true); | |
034c6ed7 LP |
3219 | break; |
3220 | ||
3221 | default: | |
3222 | assert_not_reached("Uh, control process died at wrong time."); | |
3223 | } | |
3224 | } | |
8c47c732 | 3225 | } |
c4e2ceae LP |
3226 | |
3227 | /* Notify clients about changed exit status */ | |
3228 | unit_add_to_dbus_queue(u); | |
a911bb9a LP |
3229 | |
3230 | /* We got one SIGCHLD for the service, let's watch all | |
3231 | * processes that are now running of the service, and watch | |
3232 | * that. Among the PIDs we then watch will be children | |
3233 | * reassigned to us, which hopefully allows us to identify | |
3234 | * when all children are gone */ | |
3235 | unit_tidy_watch_pids(u, s->main_pid, s->control_pid); | |
3236 | unit_watch_all_pids(u); | |
3237 | ||
bbc85a16 EV |
3238 | /* If the PID set is empty now, then let's finish this off |
3239 | (On unified we use proper notifications) */ | |
c22800e4 | 3240 | if (cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER) == 0 && set_isempty(u->pids)) |
09e24654 | 3241 | unit_add_to_cgroup_empty_queue(u); |
034c6ed7 LP |
3242 | } |
3243 | ||
718db961 LP |
3244 | static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
3245 | Service *s = SERVICE(userdata); | |
034c6ed7 LP |
3246 | |
3247 | assert(s); | |
718db961 | 3248 | assert(source == s->timer_event_source); |
034c6ed7 LP |
3249 | |
3250 | switch (s->state) { | |
3251 | ||
3252 | case SERVICE_START_PRE: | |
3253 | case SERVICE_START: | |
f2341e0a | 3254 | log_unit_warning(UNIT(s), "%s operation timed out. Terminating.", s->state == SERVICE_START ? "Start" : "Start-pre"); |
c3fda31d | 3255 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
80876c20 LP |
3256 | break; |
3257 | ||
034c6ed7 | 3258 | case SERVICE_START_POST: |
f2341e0a | 3259 | log_unit_warning(UNIT(s), "Start-post operation timed out. Stopping."); |
ce359e98 | 3260 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3261 | break; |
3262 | ||
36c16a7c LP |
3263 | case SERVICE_RUNNING: |
3264 | log_unit_warning(UNIT(s), "Service reached runtime time limit. Stopping."); | |
3265 | service_enter_stop(s, SERVICE_FAILURE_TIMEOUT); | |
3266 | break; | |
3267 | ||
e2f3b44c | 3268 | case SERVICE_RELOAD: |
089b64d5 | 3269 | log_unit_warning(UNIT(s), "Reload operation timed out. Killing reload process."); |
478b6192 | 3270 | service_kill_control_processes(s); |
f42806df LP |
3271 | s->reload_result = SERVICE_FAILURE_TIMEOUT; |
3272 | service_enter_running(s, SERVICE_SUCCESS); | |
e2f3b44c LP |
3273 | break; |
3274 | ||
034c6ed7 | 3275 | case SERVICE_STOP: |
f2341e0a | 3276 | log_unit_warning(UNIT(s), "Stopping timed out. Terminating."); |
f42806df | 3277 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3278 | break; |
3279 | ||
db2cb23b | 3280 | case SERVICE_STOP_SIGABRT: |
f2341e0a | 3281 | log_unit_warning(UNIT(s), "State 'stop-sigabrt' timed out. Terminating."); |
2ab2ab7b | 3282 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
db2cb23b UTL |
3283 | break; |
3284 | ||
034c6ed7 | 3285 | case SERVICE_STOP_SIGTERM: |
4819ff03 | 3286 | if (s->kill_context.send_sigkill) { |
f2341e0a | 3287 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Killing."); |
f42806df | 3288 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 3289 | } else { |
f2341e0a | 3290 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Skipping SIGKILL."); |
f42806df | 3291 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
ba035df2 LP |
3292 | } |
3293 | ||
034c6ed7 LP |
3294 | break; |
3295 | ||
3296 | case SERVICE_STOP_SIGKILL: | |
35b8ca3a | 3297 | /* Uh, we sent a SIGKILL and it is still not gone? |
034c6ed7 LP |
3298 | * Must be something we cannot kill, so let's just be |
3299 | * weirded out and continue */ | |
3300 | ||
f2341e0a | 3301 | log_unit_warning(UNIT(s), "Processes still around after SIGKILL. Ignoring."); |
f42806df | 3302 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3303 | break; |
3304 | ||
3305 | case SERVICE_STOP_POST: | |
f2341e0a | 3306 | log_unit_warning(UNIT(s), "State 'stop-post' timed out. Terminating."); |
f42806df | 3307 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3308 | break; |
3309 | ||
3310 | case SERVICE_FINAL_SIGTERM: | |
4819ff03 | 3311 | if (s->kill_context.send_sigkill) { |
f2341e0a | 3312 | log_unit_warning(UNIT(s), "State 'stop-final-sigterm' timed out. Killing."); |
f42806df | 3313 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 3314 | } else { |
f2341e0a | 3315 | log_unit_warning(UNIT(s), "State 'stop-final-sigterm' timed out. Skipping SIGKILL. Entering failed mode."); |
f42806df | 3316 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false); |
ba035df2 LP |
3317 | } |
3318 | ||
034c6ed7 LP |
3319 | break; |
3320 | ||
3321 | case SERVICE_FINAL_SIGKILL: | |
f2341e0a | 3322 | log_unit_warning(UNIT(s), "Processes still around after final SIGKILL. Entering failed mode."); |
f42806df | 3323 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true); |
034c6ed7 LP |
3324 | break; |
3325 | ||
3326 | case SERVICE_AUTO_RESTART: | |
f2341e0a | 3327 | log_unit_info(UNIT(s), |
ef417cfd | 3328 | s->restart_usec > 0 ? |
f2341e0a LP |
3329 | "Service hold-off time over, scheduling restart." : |
3330 | "Service has no hold-off time, scheduling restart."); | |
034c6ed7 LP |
3331 | service_enter_restart(s); |
3332 | break; | |
3333 | ||
3334 | default: | |
3335 | assert_not_reached("Timeout at wrong time."); | |
3336 | } | |
718db961 LP |
3337 | |
3338 | return 0; | |
3339 | } | |
3340 | ||
3341 | static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata) { | |
3342 | Service *s = SERVICE(userdata); | |
a7850c7d | 3343 | char t[FORMAT_TIMESPAN_MAX]; |
2787d83c | 3344 | usec_t watchdog_usec; |
718db961 LP |
3345 | |
3346 | assert(s); | |
3347 | assert(source == s->watchdog_event_source); | |
3348 | ||
2787d83c M |
3349 | watchdog_usec = service_get_watchdog_usec(s); |
3350 | ||
f2341e0a | 3351 | log_unit_error(UNIT(s), "Watchdog timeout (limit %s)!", |
2787d83c | 3352 | format_timespan(t, sizeof(t), watchdog_usec, 1)); |
8bb2d17d | 3353 | |
db2cb23b | 3354 | service_enter_signal(s, SERVICE_STOP_SIGABRT, SERVICE_FAILURE_WATCHDOG); |
842129f5 | 3355 | |
718db961 | 3356 | return 0; |
5cb5a6ff LP |
3357 | } |
3358 | ||
a354329f | 3359 | static void service_notify_message(Unit *u, pid_t pid, char **tags, FDSet *fds) { |
8c47c732 | 3360 | Service *s = SERVICE(u); |
308d72dc | 3361 | _cleanup_free_ char *cc = NULL; |
30b5275a | 3362 | bool notify_dbus = false; |
308d72dc | 3363 | const char *e; |
8c47c732 LP |
3364 | |
3365 | assert(u); | |
3366 | ||
308d72dc | 3367 | cc = strv_join(tags, ", "); |
da13d4d2 | 3368 | |
c952c6ec | 3369 | if (s->notify_access == NOTIFY_NONE) { |
f2341e0a | 3370 | log_unit_warning(u, "Got notification message from PID "PID_FMT", but reception is disabled.", pid); |
c952c6ec | 3371 | return; |
34959677 | 3372 | } else if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) { |
336c6e46 | 3373 | if (s->main_pid != 0) |
f2341e0a | 3374 | log_unit_warning(u, "Got notification message from PID "PID_FMT", but reception only permitted for main PID "PID_FMT, pid, s->main_pid); |
336c6e46 | 3375 | else |
6375bd20 JW |
3376 | log_unit_warning(u, "Got notification message from PID "PID_FMT", but reception only permitted for main PID which is currently not known", pid); |
3377 | return; | |
3378 | } else if (s->notify_access == NOTIFY_EXEC && pid != s->main_pid && pid != s->control_pid) { | |
3379 | if (s->main_pid != 0 && s->control_pid != 0) | |
3380 | log_unit_warning(u, "Got notification message from PID "PID_FMT", but reception only permitted for main PID "PID_FMT" and control PID "PID_FMT, | |
3381 | pid, s->main_pid, s->control_pid); | |
3382 | else if (s->main_pid != 0) | |
3383 | log_unit_warning(u, "Got notification message from PID "PID_FMT", but reception only permitted for main PID "PID_FMT, pid, s->main_pid); | |
3384 | else if (s->control_pid != 0) | |
3385 | log_unit_warning(u, "Got notification message from PID "PID_FMT", but reception only permitted for control PID "PID_FMT, pid, s->control_pid); | |
3386 | else | |
3387 | log_unit_warning(u, "Got notification message from PID "PID_FMT", but reception only permitted for main PID and control PID which are currently not known", pid); | |
c952c6ec | 3388 | return; |
34959677 TG |
3389 | } else |
3390 | log_unit_debug(u, "Got notification message from PID "PID_FMT" (%s)", pid, isempty(cc) ? "n/a" : cc); | |
c952c6ec | 3391 | |
8c47c732 | 3392 | /* Interpret MAINPID= */ |
28849dba | 3393 | e = strv_find_startswith(tags, "MAINPID="); |
5e56b378 | 3394 | if (e && IN_SET(s->state, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) { |
28849dba | 3395 | if (parse_pid(e, &pid) < 0) |
f2341e0a | 3396 | log_unit_warning(u, "Failed to parse MAINPID= field in notification message: %s", e); |
3c9512c7 JW |
3397 | else if (pid == s->control_pid) |
3398 | log_unit_warning(u, "A control process cannot also be the main process"); | |
df0ff127 | 3399 | else if (pid == getpid_cached() || pid == 1) |
6939ce64 | 3400 | log_unit_warning(u, "Service manager can't be main process, ignoring sd_notify() MAINPID= field"); |
8c47c732 | 3401 | else { |
5925dd3c | 3402 | service_set_main_pid(s, pid); |
7400b9d2 | 3403 | unit_watch_pid(UNIT(s), pid); |
30b5275a | 3404 | notify_dbus = true; |
8c47c732 LP |
3405 | } |
3406 | } | |
3407 | ||
308d72dc LP |
3408 | /* Interpret RELOADING= */ |
3409 | if (strv_find(tags, "RELOADING=1")) { | |
3410 | ||
308d72dc LP |
3411 | s->notify_state = NOTIFY_RELOADING; |
3412 | ||
3413 | if (s->state == SERVICE_RUNNING) | |
3414 | service_enter_reload_by_notify(s); | |
3415 | ||
3416 | notify_dbus = true; | |
3417 | } | |
3418 | ||
8c47c732 | 3419 | /* Interpret READY= */ |
308d72dc LP |
3420 | if (strv_find(tags, "READY=1")) { |
3421 | ||
308d72dc LP |
3422 | s->notify_state = NOTIFY_READY; |
3423 | ||
3424 | /* Type=notify services inform us about completed | |
3425 | * initialization with READY=1 */ | |
3426 | if (s->type == SERVICE_NOTIFY && s->state == SERVICE_START) | |
3427 | service_enter_start_post(s); | |
3428 | ||
3429 | /* Sending READY=1 while we are reloading informs us | |
3430 | * that the reloading is complete */ | |
3431 | if (s->state == SERVICE_RELOAD && s->control_pid == 0) | |
3432 | service_enter_running(s, SERVICE_SUCCESS); | |
3433 | ||
3434 | notify_dbus = true; | |
3435 | } | |
3436 | ||
3437 | /* Interpret STOPPING= */ | |
3438 | if (strv_find(tags, "STOPPING=1")) { | |
3439 | ||
308d72dc LP |
3440 | s->notify_state = NOTIFY_STOPPING; |
3441 | ||
3442 | if (s->state == SERVICE_RUNNING) | |
3443 | service_enter_stop_by_notify(s); | |
3444 | ||
30b5275a | 3445 | notify_dbus = true; |
8c47c732 LP |
3446 | } |
3447 | ||
3448 | /* Interpret STATUS= */ | |
28849dba | 3449 | e = strv_find_startswith(tags, "STATUS="); |
7f110ff9 | 3450 | if (e) { |
28849dba | 3451 | _cleanup_free_ char *t = NULL; |
8c47c732 | 3452 | |
28849dba LP |
3453 | if (!isempty(e)) { |
3454 | if (!utf8_is_valid(e)) | |
f2341e0a | 3455 | log_unit_warning(u, "Status message in notification message is not UTF-8 clean."); |
28849dba | 3456 | else { |
28849dba LP |
3457 | t = strdup(e); |
3458 | if (!t) | |
3459 | log_oom(); | |
3a2776bc | 3460 | } |
28849dba | 3461 | } |
8c47c732 | 3462 | |
30b5275a | 3463 | if (!streq_ptr(s->status_text, t)) { |
3b319885 | 3464 | free_and_replace(s->status_text, t); |
30b5275a | 3465 | notify_dbus = true; |
28849dba | 3466 | } |
8c47c732 | 3467 | } |
842129f5 | 3468 | |
4774e357 | 3469 | /* Interpret ERRNO= */ |
28849dba | 3470 | e = strv_find_startswith(tags, "ERRNO="); |
4774e357 MAA |
3471 | if (e) { |
3472 | int status_errno; | |
3473 | ||
28849dba | 3474 | if (safe_atoi(e, &status_errno) < 0 || status_errno < 0) |
f2341e0a | 3475 | log_unit_warning(u, "Failed to parse ERRNO= field in notification message: %s", e); |
4774e357 | 3476 | else { |
4774e357 MAA |
3477 | if (s->status_errno != status_errno) { |
3478 | s->status_errno = status_errno; | |
3479 | notify_dbus = true; | |
3480 | } | |
3481 | } | |
3482 | } | |
3483 | ||
6f285378 | 3484 | /* Interpret WATCHDOG= */ |
1f6b4113 | 3485 | if (strv_find(tags, "WATCHDOG=1")) |
842129f5 | 3486 | service_reset_watchdog(s); |
c4e2ceae | 3487 | |
8dd4c05b LP |
3488 | if (strv_find(tags, "FDSTORE=1")) { |
3489 | const char *name; | |
3490 | ||
3491 | name = strv_find_startswith(tags, "FDNAME="); | |
3492 | if (name && !fdname_is_valid(name)) { | |
3493 | log_unit_warning(u, "Passed FDNAME= name is invalid, ignoring."); | |
3494 | name = NULL; | |
3495 | } | |
3496 | ||
3497 | service_add_fd_store_set(s, fds, name); | |
3498 | } | |
a354329f | 3499 | |
2787d83c M |
3500 | e = strv_find_startswith(tags, "WATCHDOG_USEC="); |
3501 | if (e) { | |
3502 | usec_t watchdog_override_usec; | |
3503 | if (safe_atou64(e, &watchdog_override_usec) < 0) | |
3504 | log_unit_warning(u, "Failed to parse WATCHDOG_USEC=%s", e); | |
3505 | else | |
3506 | service_reset_watchdog_timeout(s, watchdog_override_usec); | |
3507 | } | |
3508 | ||
c4e2ceae | 3509 | /* Notify clients about changed status or main pid */ |
30b5275a LP |
3510 | if (notify_dbus) |
3511 | unit_add_to_dbus_queue(u); | |
8c47c732 LP |
3512 | } |
3513 | ||
7a7821c8 | 3514 | static int service_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 3515 | Service *s = SERVICE(u); |
7a7821c8 | 3516 | uint64_t t; |
68db7a3b ZJS |
3517 | int r; |
3518 | ||
3519 | if (!s->timer_event_source) | |
3520 | return 0; | |
3521 | ||
7a7821c8 | 3522 | r = sd_event_source_get_time(s->timer_event_source, &t); |
68db7a3b ZJS |
3523 | if (r < 0) |
3524 | return r; | |
7a7821c8 LP |
3525 | if (t == USEC_INFINITY) |
3526 | return 0; | |
68db7a3b | 3527 | |
7a7821c8 | 3528 | *timeout = t; |
68db7a3b ZJS |
3529 | return 1; |
3530 | } | |
3531 | ||
05e343b7 LP |
3532 | static void service_bus_name_owner_change( |
3533 | Unit *u, | |
3534 | const char *name, | |
3535 | const char *old_owner, | |
3536 | const char *new_owner) { | |
3537 | ||
3538 | Service *s = SERVICE(u); | |
718db961 | 3539 | int r; |
05e343b7 LP |
3540 | |
3541 | assert(s); | |
3542 | assert(name); | |
3543 | ||
3544 | assert(streq(s->bus_name, name)); | |
3545 | assert(old_owner || new_owner); | |
3546 | ||
3547 | if (old_owner && new_owner) | |
f2341e0a | 3548 | log_unit_debug(u, "D-Bus name %s changed owner from %s to %s", name, old_owner, new_owner); |
05e343b7 | 3549 | else if (old_owner) |
f2341e0a | 3550 | log_unit_debug(u, "D-Bus name %s no longer registered by %s", name, old_owner); |
05e343b7 | 3551 | else |
f2341e0a | 3552 | log_unit_debug(u, "D-Bus name %s now registered by %s", name, new_owner); |
05e343b7 LP |
3553 | |
3554 | s->bus_name_good = !!new_owner; | |
3555 | ||
d8ccf5fd DM |
3556 | /* Track the current owner, so we can reconstruct changes after a daemon reload */ |
3557 | r = free_and_strdup(&s->bus_name_owner, new_owner); | |
3558 | if (r < 0) { | |
3559 | log_unit_error_errno(u, r, "Unable to set new bus name owner %s: %m", new_owner); | |
3560 | return; | |
3561 | } | |
3562 | ||
05e343b7 LP |
3563 | if (s->type == SERVICE_DBUS) { |
3564 | ||
3565 | /* service_enter_running() will figure out what to | |
3566 | * do */ | |
3567 | if (s->state == SERVICE_RUNNING) | |
f42806df | 3568 | service_enter_running(s, SERVICE_SUCCESS); |
05e343b7 LP |
3569 | else if (s->state == SERVICE_START && new_owner) |
3570 | service_enter_start_post(s); | |
3571 | ||
3572 | } else if (new_owner && | |
3573 | s->main_pid <= 0 && | |
a6951a50 LP |
3574 | IN_SET(s->state, |
3575 | SERVICE_START, | |
3576 | SERVICE_START_POST, | |
3577 | SERVICE_RUNNING, | |
3578 | SERVICE_RELOAD)) { | |
05e343b7 | 3579 | |
4afd3348 | 3580 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; |
718db961 | 3581 | pid_t pid; |
05e343b7 | 3582 | |
718db961 | 3583 | /* Try to acquire PID from bus service */ |
05e343b7 | 3584 | |
056f95d0 | 3585 | r = sd_bus_get_name_creds(u->manager->api_bus, name, SD_BUS_CREDS_PID, &creds); |
5b12334d LP |
3586 | if (r >= 0) |
3587 | r = sd_bus_creds_get_pid(creds, &pid); | |
718db961 | 3588 | if (r >= 0) { |
7c102d60 | 3589 | log_unit_debug(u, "D-Bus name %s is now owned by process " PID_FMT, name, pid); |
05e343b7 | 3590 | |
718db961 LP |
3591 | service_set_main_pid(s, pid); |
3592 | unit_watch_pid(UNIT(s), pid); | |
3593 | } | |
7400b9d2 | 3594 | } |
05e343b7 LP |
3595 | } |
3596 | ||
16115b0a | 3597 | int service_set_socket_fd(Service *s, int fd, Socket *sock, bool selinux_context_net) { |
79a98c60 LP |
3598 | _cleanup_free_ char *peer = NULL; |
3599 | int r; | |
57020a3a | 3600 | |
4f2d528d LP |
3601 | assert(s); |
3602 | assert(fd >= 0); | |
3603 | ||
7f2fbbff LP |
3604 | /* This is called by the socket code when instantiating a new service for a stream socket and the socket needs |
3605 | * to be configured. We take ownership of the passed fd on success. */ | |
4f2d528d | 3606 | |
1124fe6f | 3607 | if (UNIT(s)->load_state != UNIT_LOADED) |
4f2d528d LP |
3608 | return -EINVAL; |
3609 | ||
3610 | if (s->socket_fd >= 0) | |
3611 | return -EBUSY; | |
3612 | ||
3613 | if (s->state != SERVICE_DEAD) | |
3614 | return -EAGAIN; | |
3615 | ||
366b7db4 | 3616 | if (getpeername_pretty(fd, true, &peer) >= 0) { |
79a98c60 LP |
3617 | |
3618 | if (UNIT(s)->description) { | |
3619 | _cleanup_free_ char *a; | |
3620 | ||
605405c6 | 3621 | a = strjoin(UNIT(s)->description, " (", peer, ")"); |
79a98c60 LP |
3622 | if (!a) |
3623 | return -ENOMEM; | |
3624 | ||
3625 | r = unit_set_description(UNIT(s), a); | |
3626 | } else | |
3627 | r = unit_set_description(UNIT(s), peer); | |
3628 | ||
3629 | if (r < 0) | |
3630 | return r; | |
3631 | } | |
3632 | ||
eef85c4a | 3633 | r = unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false, UNIT_DEPENDENCY_IMPLICIT); |
7f2fbbff LP |
3634 | if (r < 0) |
3635 | return r; | |
3636 | ||
4f2d528d | 3637 | s->socket_fd = fd; |
16115b0a | 3638 | s->socket_fd_selinux_context_net = selinux_context_net; |
6cf6bbc2 | 3639 | |
57020a3a | 3640 | unit_ref_set(&s->accept_socket, UNIT(sock)); |
7f2fbbff | 3641 | return 0; |
4f2d528d LP |
3642 | } |
3643 | ||
fdf20a31 | 3644 | static void service_reset_failed(Unit *u) { |
5632e374 LP |
3645 | Service *s = SERVICE(u); |
3646 | ||
3647 | assert(s); | |
3648 | ||
fdf20a31 | 3649 | if (s->state == SERVICE_FAILED) |
5632e374 LP |
3650 | service_set_state(s, SERVICE_DEAD); |
3651 | ||
f42806df LP |
3652 | s->result = SERVICE_SUCCESS; |
3653 | s->reload_result = SERVICE_SUCCESS; | |
7a0019d3 LP |
3654 | s->n_restarts = 0; |
3655 | s->flush_n_restarts = false; | |
5632e374 LP |
3656 | } |
3657 | ||
718db961 | 3658 | static int service_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
8a0867d6 | 3659 | Service *s = SERVICE(u); |
41efeaec | 3660 | |
a6951a50 LP |
3661 | assert(s); |
3662 | ||
814cc562 | 3663 | return unit_kill_common(u, who, signo, s->main_pid, s->control_pid, error); |
8a0867d6 LP |
3664 | } |
3665 | ||
291d565a LP |
3666 | static int service_main_pid(Unit *u) { |
3667 | Service *s = SERVICE(u); | |
3668 | ||
3669 | assert(s); | |
3670 | ||
3671 | return s->main_pid; | |
3672 | } | |
3673 | ||
3674 | static int service_control_pid(Unit *u) { | |
3675 | Service *s = SERVICE(u); | |
3676 | ||
3677 | assert(s); | |
3678 | ||
3679 | return s->control_pid; | |
3680 | } | |
3681 | ||
94f04347 | 3682 | static const char* const service_restart_table[_SERVICE_RESTART_MAX] = { |
525ee6f4 LP |
3683 | [SERVICE_RESTART_NO] = "no", |
3684 | [SERVICE_RESTART_ON_SUCCESS] = "on-success", | |
50caaedb | 3685 | [SERVICE_RESTART_ON_FAILURE] = "on-failure", |
6cfe2fde | 3686 | [SERVICE_RESTART_ON_ABNORMAL] = "on-abnormal", |
dc99a976 | 3687 | [SERVICE_RESTART_ON_WATCHDOG] = "on-watchdog", |
50caaedb | 3688 | [SERVICE_RESTART_ON_ABORT] = "on-abort", |
6cfe2fde | 3689 | [SERVICE_RESTART_ALWAYS] = "always", |
94f04347 LP |
3690 | }; |
3691 | ||
3692 | DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart); | |
3693 | ||
3694 | static const char* const service_type_table[_SERVICE_TYPE_MAX] = { | |
94f04347 | 3695 | [SERVICE_SIMPLE] = "simple", |
0d624a78 | 3696 | [SERVICE_FORKING] = "forking", |
34e9ba66 | 3697 | [SERVICE_ONESHOT] = "oneshot", |
8c47c732 | 3698 | [SERVICE_DBUS] = "dbus", |
f2b68789 LP |
3699 | [SERVICE_NOTIFY] = "notify", |
3700 | [SERVICE_IDLE] = "idle" | |
94f04347 LP |
3701 | }; |
3702 | ||
3703 | DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType); | |
3704 | ||
e537352b | 3705 | static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = { |
94f04347 LP |
3706 | [SERVICE_EXEC_START_PRE] = "ExecStartPre", |
3707 | [SERVICE_EXEC_START] = "ExecStart", | |
3708 | [SERVICE_EXEC_START_POST] = "ExecStartPost", | |
3709 | [SERVICE_EXEC_RELOAD] = "ExecReload", | |
3710 | [SERVICE_EXEC_STOP] = "ExecStop", | |
3711 | [SERVICE_EXEC_STOP_POST] = "ExecStopPost", | |
3712 | }; | |
3713 | ||
3714 | DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand); | |
3715 | ||
308d72dc LP |
3716 | static const char* const notify_state_table[_NOTIFY_STATE_MAX] = { |
3717 | [NOTIFY_UNKNOWN] = "unknown", | |
3718 | [NOTIFY_READY] = "ready", | |
3719 | [NOTIFY_RELOADING] = "reloading", | |
3720 | [NOTIFY_STOPPING] = "stopping", | |
3721 | }; | |
3722 | ||
3723 | DEFINE_STRING_TABLE_LOOKUP(notify_state, NotifyState); | |
3724 | ||
f42806df LP |
3725 | static const char* const service_result_table[_SERVICE_RESULT_MAX] = { |
3726 | [SERVICE_SUCCESS] = "success", | |
3727 | [SERVICE_FAILURE_RESOURCES] = "resources", | |
c35755fb | 3728 | [SERVICE_FAILURE_PROTOCOL] = "protocol", |
f42806df LP |
3729 | [SERVICE_FAILURE_TIMEOUT] = "timeout", |
3730 | [SERVICE_FAILURE_EXIT_CODE] = "exit-code", | |
3731 | [SERVICE_FAILURE_SIGNAL] = "signal", | |
bb242b7b | 3732 | [SERVICE_FAILURE_CORE_DUMP] = "core-dump", |
8d1b002a | 3733 | [SERVICE_FAILURE_WATCHDOG] = "watchdog", |
07299350 | 3734 | [SERVICE_FAILURE_START_LIMIT_HIT] = "start-limit-hit", |
f42806df LP |
3735 | }; |
3736 | ||
3737 | DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult); | |
3738 | ||
87f0e418 | 3739 | const UnitVTable service_vtable = { |
7d17cfbc | 3740 | .object_size = sizeof(Service), |
718db961 LP |
3741 | .exec_context_offset = offsetof(Service, exec_context), |
3742 | .cgroup_context_offset = offsetof(Service, cgroup_context), | |
3743 | .kill_context_offset = offsetof(Service, kill_context), | |
613b411c | 3744 | .exec_runtime_offset = offsetof(Service, exec_runtime), |
29206d46 | 3745 | .dynamic_creds_offset = offsetof(Service, dynamic_creds), |
3ef63c31 | 3746 | |
f975e971 LP |
3747 | .sections = |
3748 | "Unit\0" | |
3749 | "Service\0" | |
3750 | "Install\0", | |
4ad49000 | 3751 | .private_section = "Service", |
71645aca | 3752 | |
034c6ed7 LP |
3753 | .init = service_init, |
3754 | .done = service_done, | |
a16e1123 | 3755 | .load = service_load, |
a354329f | 3756 | .release_resources = service_release_resources, |
a16e1123 LP |
3757 | |
3758 | .coldplug = service_coldplug, | |
034c6ed7 | 3759 | |
5cb5a6ff LP |
3760 | .dump = service_dump, |
3761 | ||
3762 | .start = service_start, | |
3763 | .stop = service_stop, | |
3764 | .reload = service_reload, | |
3765 | ||
034c6ed7 LP |
3766 | .can_reload = service_can_reload, |
3767 | ||
8a0867d6 LP |
3768 | .kill = service_kill, |
3769 | ||
a16e1123 LP |
3770 | .serialize = service_serialize, |
3771 | .deserialize_item = service_deserialize_item, | |
3772 | ||
5cb5a6ff | 3773 | .active_state = service_active_state, |
10a94420 | 3774 | .sub_state_to_string = service_sub_state_to_string, |
5cb5a6ff | 3775 | |
701cc384 | 3776 | .check_gc = service_check_gc, |
701cc384 | 3777 | |
034c6ed7 | 3778 | .sigchld_event = service_sigchld_event, |
2c4104f0 | 3779 | |
fdf20a31 | 3780 | .reset_failed = service_reset_failed, |
5632e374 | 3781 | |
4ad49000 | 3782 | .notify_cgroup_empty = service_notify_cgroup_empty_event, |
8c47c732 | 3783 | .notify_message = service_notify_message, |
8e274523 | 3784 | |
291d565a LP |
3785 | .main_pid = service_main_pid, |
3786 | .control_pid = service_control_pid, | |
3787 | ||
05e343b7 | 3788 | .bus_name_owner_change = service_bus_name_owner_change, |
05e343b7 | 3789 | |
718db961 | 3790 | .bus_vtable = bus_service_vtable, |
74c964d3 LP |
3791 | .bus_set_property = bus_service_set_property, |
3792 | .bus_commit_properties = bus_service_commit_properties, | |
4139c1b2 | 3793 | |
68db7a3b | 3794 | .get_timeout = service_get_timeout, |
718db961 LP |
3795 | .can_transient = true, |
3796 | ||
c6918296 MS |
3797 | .status_message_formats = { |
3798 | .starting_stopping = { | |
3799 | [0] = "Starting %s...", | |
3800 | [1] = "Stopping %s...", | |
3801 | }, | |
3802 | .finished_start_job = { | |
3803 | [JOB_DONE] = "Started %s.", | |
3804 | [JOB_FAILED] = "Failed to start %s.", | |
c6918296 MS |
3805 | }, |
3806 | .finished_stop_job = { | |
3807 | [JOB_DONE] = "Stopped %s.", | |
3808 | [JOB_FAILED] = "Stopped (with error) %s.", | |
c6918296 MS |
3809 | }, |
3810 | }, | |
5cb5a6ff | 3811 | }; |