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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
a7334b09 LP |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright 2010 Lennart Poettering | |
6 | ||
7 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
8 | under the terms of the GNU Lesser General Public License as published by |
9 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
10 | (at your option) any later version. |
11 | ||
12 | systemd is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 15 | Lesser General Public License for more details. |
a7334b09 | 16 | |
5430f7f2 | 17 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
18 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
19 | ***/ | |
20 | ||
5cb5a6ff | 21 | #include <errno.h> |
034c6ed7 | 22 | #include <signal.h> |
2c4104f0 | 23 | #include <unistd.h> |
5cb5a6ff | 24 | |
7a0019d3 LP |
25 | #include "sd-messages.h" |
26 | ||
b5efdb8a | 27 | #include "alloc-util.h" |
574634bc | 28 | #include "async.h" |
4f5dd394 LP |
29 | #include "bus-error.h" |
30 | #include "bus-kernel.h" | |
31 | #include "bus-util.h" | |
4139c1b2 | 32 | #include "dbus-service.h" |
f6a6225e | 33 | #include "def.h" |
4d1a6904 | 34 | #include "env-util.h" |
4f5dd394 LP |
35 | #include "escape.h" |
36 | #include "exit-status.h" | |
3ffd4af2 | 37 | #include "fd-util.h" |
a5c32cff | 38 | #include "fileio.h" |
f97b34a6 | 39 | #include "format-util.h" |
f4f15635 | 40 | #include "fs-util.h" |
4f5dd394 LP |
41 | #include "load-dropin.h" |
42 | #include "load-fragment.h" | |
43 | #include "log.h" | |
44 | #include "manager.h" | |
6bedfcbb | 45 | #include "parse-util.h" |
4f5dd394 | 46 | #include "path-util.h" |
0b452006 | 47 | #include "process-util.h" |
3ffd4af2 | 48 | #include "service.h" |
24882e06 | 49 | #include "signal-util.h" |
4f5dd394 | 50 | #include "special.h" |
e266c068 | 51 | #include "stdio-util.h" |
8b43440b | 52 | #include "string-table.h" |
07630cea | 53 | #include "string-util.h" |
4f5dd394 LP |
54 | #include "strv.h" |
55 | #include "unit-name.h" | |
4f5dd394 LP |
56 | #include "unit.h" |
57 | #include "utf8.h" | |
58 | #include "util.h" | |
034c6ed7 | 59 | |
acbb0225 | 60 | static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = { |
87f0e418 LP |
61 | [SERVICE_DEAD] = UNIT_INACTIVE, |
62 | [SERVICE_START_PRE] = UNIT_ACTIVATING, | |
63 | [SERVICE_START] = UNIT_ACTIVATING, | |
64 | [SERVICE_START_POST] = UNIT_ACTIVATING, | |
65 | [SERVICE_RUNNING] = UNIT_ACTIVE, | |
80876c20 | 66 | [SERVICE_EXITED] = UNIT_ACTIVE, |
032ff4af | 67 | [SERVICE_RELOAD] = UNIT_RELOADING, |
87f0e418 | 68 | [SERVICE_STOP] = UNIT_DEACTIVATING, |
db2cb23b | 69 | [SERVICE_STOP_SIGABRT] = UNIT_DEACTIVATING, |
87f0e418 LP |
70 | [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, |
71 | [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
72 | [SERVICE_STOP_POST] = UNIT_DEACTIVATING, | |
73 | [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, | |
74 | [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
fdf20a31 | 75 | [SERVICE_FAILED] = UNIT_FAILED, |
6124958c | 76 | [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING |
034c6ed7 | 77 | }; |
5cb5a6ff | 78 | |
e056b01d LP |
79 | /* For Type=idle we never want to delay any other jobs, hence we |
80 | * consider idle jobs active as soon as we start working on them */ | |
81 | static const UnitActiveState state_translation_table_idle[_SERVICE_STATE_MAX] = { | |
82 | [SERVICE_DEAD] = UNIT_INACTIVE, | |
83 | [SERVICE_START_PRE] = UNIT_ACTIVE, | |
84 | [SERVICE_START] = UNIT_ACTIVE, | |
85 | [SERVICE_START_POST] = UNIT_ACTIVE, | |
86 | [SERVICE_RUNNING] = UNIT_ACTIVE, | |
87 | [SERVICE_EXITED] = UNIT_ACTIVE, | |
88 | [SERVICE_RELOAD] = UNIT_RELOADING, | |
89 | [SERVICE_STOP] = UNIT_DEACTIVATING, | |
db2cb23b | 90 | [SERVICE_STOP_SIGABRT] = UNIT_DEACTIVATING, |
e056b01d LP |
91 | [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, |
92 | [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
93 | [SERVICE_STOP_POST] = UNIT_DEACTIVATING, | |
94 | [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, | |
95 | [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
96 | [SERVICE_FAILED] = UNIT_FAILED, | |
97 | [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING | |
98 | }; | |
99 | ||
718db961 LP |
100 | static int service_dispatch_io(sd_event_source *source, int fd, uint32_t events, void *userdata); |
101 | static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); | |
102 | static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata); | |
103 | ||
842129f5 | 104 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f); |
308d72dc | 105 | static void service_enter_reload_by_notify(Service *s); |
842129f5 | 106 | |
a16e1123 LP |
107 | static void service_init(Unit *u) { |
108 | Service *s = SERVICE(u); | |
109 | ||
110 | assert(u); | |
ac155bb8 | 111 | assert(u->load_state == UNIT_STUB); |
a16e1123 | 112 | |
1f19a534 OS |
113 | s->timeout_start_usec = u->manager->default_timeout_start_usec; |
114 | s->timeout_stop_usec = u->manager->default_timeout_stop_usec; | |
115 | s->restart_usec = u->manager->default_restart_usec; | |
36c16a7c | 116 | s->runtime_max_usec = USEC_INFINITY; |
0b86feac | 117 | s->type = _SERVICE_TYPE_INVALID; |
a16e1123 | 118 | s->socket_fd = -1; |
a34ceba6 | 119 | s->stdin_fd = s->stdout_fd = s->stderr_fd = -1; |
3185a36b | 120 | s->guess_main_pid = true; |
a16e1123 | 121 | |
a16e1123 LP |
122 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; |
123 | } | |
124 | ||
5e94833f LP |
125 | static void service_unwatch_control_pid(Service *s) { |
126 | assert(s); | |
127 | ||
128 | if (s->control_pid <= 0) | |
129 | return; | |
130 | ||
131 | unit_unwatch_pid(UNIT(s), s->control_pid); | |
132 | s->control_pid = 0; | |
133 | } | |
134 | ||
135 | static void service_unwatch_main_pid(Service *s) { | |
136 | assert(s); | |
137 | ||
138 | if (s->main_pid <= 0) | |
139 | return; | |
140 | ||
141 | unit_unwatch_pid(UNIT(s), s->main_pid); | |
142 | s->main_pid = 0; | |
143 | } | |
144 | ||
3e52541e MS |
145 | static void service_unwatch_pid_file(Service *s) { |
146 | if (!s->pid_file_pathspec) | |
147 | return; | |
148 | ||
f2341e0a | 149 | log_unit_debug(UNIT(s), "Stopping watch for PID file %s", s->pid_file_pathspec->path); |
718db961 | 150 | path_spec_unwatch(s->pid_file_pathspec); |
3e52541e | 151 | path_spec_done(s->pid_file_pathspec); |
a1e58e8e | 152 | s->pid_file_pathspec = mfree(s->pid_file_pathspec); |
3e52541e MS |
153 | } |
154 | ||
5925dd3c | 155 | static int service_set_main_pid(Service *s, pid_t pid) { |
e55224ca LP |
156 | pid_t ppid; |
157 | ||
5925dd3c LP |
158 | assert(s); |
159 | ||
160 | if (pid <= 1) | |
161 | return -EINVAL; | |
162 | ||
df0ff127 | 163 | if (pid == getpid_cached()) |
5925dd3c LP |
164 | return -EINVAL; |
165 | ||
7400b9d2 LP |
166 | if (s->main_pid == pid && s->main_pid_known) |
167 | return 0; | |
168 | ||
169 | if (s->main_pid != pid) { | |
170 | service_unwatch_main_pid(s); | |
171 | exec_status_start(&s->main_exec_status, pid); | |
172 | } | |
41efeaec | 173 | |
6dfa5494 LP |
174 | s->main_pid = pid; |
175 | s->main_pid_known = true; | |
176 | ||
df0ff127 | 177 | if (get_process_ppid(pid, &ppid) >= 0 && ppid != getpid_cached()) { |
f2341e0a | 178 | log_unit_warning(UNIT(s), "Supervising process "PID_FMT" which is not our child. We'll most likely not notice when it exits.", pid); |
6dfa5494 LP |
179 | s->main_pid_alien = true; |
180 | } else | |
181 | s->main_pid_alien = false; | |
5925dd3c LP |
182 | |
183 | return 0; | |
184 | } | |
185 | ||
3e7a1f50 | 186 | void service_close_socket_fd(Service *s) { |
4f2d528d LP |
187 | assert(s); |
188 | ||
5cc3985e | 189 | /* Undo the effect of service_set_socket_fd(). */ |
4f2d528d | 190 | |
5cc3985e | 191 | s->socket_fd = asynchronous_close(s->socket_fd); |
6cf6bbc2 | 192 | |
5cc3985e LP |
193 | if (UNIT_ISSET(s->accept_socket)) { |
194 | socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket))); | |
195 | unit_ref_unset(&s->accept_socket); | |
196 | } | |
6cf6bbc2 LP |
197 | } |
198 | ||
a6927d7f MO |
199 | static void service_stop_watchdog(Service *s) { |
200 | assert(s); | |
201 | ||
718db961 | 202 | s->watchdog_event_source = sd_event_source_unref(s->watchdog_event_source); |
842129f5 | 203 | s->watchdog_timestamp = DUAL_TIMESTAMP_NULL; |
a6927d7f MO |
204 | } |
205 | ||
2787d83c M |
206 | static usec_t service_get_watchdog_usec(Service *s) { |
207 | assert(s); | |
208 | ||
209 | if (s->watchdog_override_enable) | |
210 | return s->watchdog_override_usec; | |
211 | else | |
212 | return s->watchdog_usec; | |
213 | } | |
214 | ||
842129f5 | 215 | static void service_start_watchdog(Service *s) { |
bb242b7b | 216 | int r; |
2787d83c | 217 | usec_t watchdog_usec; |
bb242b7b MO |
218 | |
219 | assert(s); | |
220 | ||
2787d83c | 221 | watchdog_usec = service_get_watchdog_usec(s); |
4c701096 | 222 | if (IN_SET(watchdog_usec, 0, USEC_INFINITY)) |
bb242b7b MO |
223 | return; |
224 | ||
718db961 | 225 | if (s->watchdog_event_source) { |
2787d83c | 226 | r = sd_event_source_set_time(s->watchdog_event_source, usec_add(s->watchdog_timestamp.monotonic, watchdog_usec)); |
718db961 | 227 | if (r < 0) { |
f2341e0a | 228 | log_unit_warning_errno(UNIT(s), r, "Failed to reset watchdog timer: %m"); |
718db961 LP |
229 | return; |
230 | } | |
231 | ||
842129f5 | 232 | r = sd_event_source_set_enabled(s->watchdog_event_source, SD_EVENT_ONESHOT); |
c4ef3317 | 233 | } else { |
6a0f1f6d LP |
234 | r = sd_event_add_time( |
235 | UNIT(s)->manager->event, | |
236 | &s->watchdog_event_source, | |
237 | CLOCK_MONOTONIC, | |
2787d83c | 238 | usec_add(s->watchdog_timestamp.monotonic, watchdog_usec), 0, |
6a0f1f6d | 239 | service_dispatch_watchdog, s); |
c4ef3317 | 240 | if (r < 0) { |
f2341e0a | 241 | log_unit_warning_errno(UNIT(s), r, "Failed to add watchdog timer: %m"); |
c4ef3317 LP |
242 | return; |
243 | } | |
244 | ||
7dfbe2e3 TG |
245 | (void) sd_event_source_set_description(s->watchdog_event_source, "service-watchdog"); |
246 | ||
c4ef3317 LP |
247 | /* Let's process everything else which might be a sign |
248 | * of living before we consider a service died. */ | |
249 | r = sd_event_source_set_priority(s->watchdog_event_source, SD_EVENT_PRIORITY_IDLE); | |
250 | } | |
718db961 | 251 | |
bb242b7b | 252 | if (r < 0) |
f2341e0a | 253 | log_unit_warning_errno(UNIT(s), r, "Failed to install watchdog timer: %m"); |
bb242b7b MO |
254 | } |
255 | ||
a6927d7f MO |
256 | static void service_reset_watchdog(Service *s) { |
257 | assert(s); | |
258 | ||
259 | dual_timestamp_get(&s->watchdog_timestamp); | |
842129f5 | 260 | service_start_watchdog(s); |
a6927d7f MO |
261 | } |
262 | ||
2787d83c M |
263 | static void service_reset_watchdog_timeout(Service *s, usec_t watchdog_override_usec) { |
264 | assert(s); | |
265 | ||
266 | s->watchdog_override_enable = true; | |
267 | s->watchdog_override_usec = watchdog_override_usec; | |
268 | service_reset_watchdog(s); | |
269 | ||
270 | log_unit_debug(UNIT(s), "watchdog_usec="USEC_FMT, s->watchdog_usec); | |
271 | log_unit_debug(UNIT(s), "watchdog_override_usec="USEC_FMT, s->watchdog_override_usec); | |
272 | } | |
273 | ||
a354329f LP |
274 | static void service_fd_store_unlink(ServiceFDStore *fs) { |
275 | ||
276 | if (!fs) | |
277 | return; | |
278 | ||
279 | if (fs->service) { | |
280 | assert(fs->service->n_fd_store > 0); | |
281 | LIST_REMOVE(fd_store, fs->service->fd_store, fs); | |
282 | fs->service->n_fd_store--; | |
283 | } | |
284 | ||
285 | if (fs->event_source) { | |
286 | sd_event_source_set_enabled(fs->event_source, SD_EVENT_OFF); | |
287 | sd_event_source_unref(fs->event_source); | |
288 | } | |
289 | ||
8dd4c05b | 290 | free(fs->fdname); |
a354329f LP |
291 | safe_close(fs->fd); |
292 | free(fs); | |
293 | } | |
294 | ||
f0bfbfac ZJS |
295 | static void service_release_fd_store(Service *s) { |
296 | assert(s); | |
297 | ||
7eb2a8a1 LP |
298 | if (s->n_keep_fd_store > 0) |
299 | return; | |
300 | ||
f0bfbfac ZJS |
301 | log_unit_debug(UNIT(s), "Releasing all stored fds"); |
302 | while (s->fd_store) | |
303 | service_fd_store_unlink(s->fd_store); | |
304 | ||
305 | assert(s->n_fd_store == 0); | |
306 | } | |
307 | ||
7eb2a8a1 | 308 | static void service_release_resources(Unit *u) { |
a354329f LP |
309 | Service *s = SERVICE(u); |
310 | ||
311 | assert(s); | |
312 | ||
a34ceba6 | 313 | if (!s->fd_store && s->stdin_fd < 0 && s->stdout_fd < 0 && s->stderr_fd < 0) |
a354329f LP |
314 | return; |
315 | ||
f0bfbfac | 316 | log_unit_debug(u, "Releasing resources."); |
a354329f | 317 | |
a34ceba6 LP |
318 | s->stdin_fd = safe_close(s->stdin_fd); |
319 | s->stdout_fd = safe_close(s->stdout_fd); | |
320 | s->stderr_fd = safe_close(s->stderr_fd); | |
321 | ||
7eb2a8a1 | 322 | service_release_fd_store(s); |
a354329f LP |
323 | } |
324 | ||
87f0e418 LP |
325 | static void service_done(Unit *u) { |
326 | Service *s = SERVICE(u); | |
44d8db9e LP |
327 | |
328 | assert(s); | |
329 | ||
a1e58e8e LP |
330 | s->pid_file = mfree(s->pid_file); |
331 | s->status_text = mfree(s->status_text); | |
efe6e7d3 | 332 | |
613b411c | 333 | s->exec_runtime = exec_runtime_unref(s->exec_runtime); |
e537352b | 334 | exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); |
44d8db9e | 335 | s->control_command = NULL; |
867b3b7d | 336 | s->main_command = NULL; |
44d8db9e | 337 | |
29206d46 LP |
338 | dynamic_creds_unref(&s->dynamic_creds); |
339 | ||
37520c1b LP |
340 | exit_status_set_free(&s->restart_prevent_status); |
341 | exit_status_set_free(&s->restart_force_status); | |
342 | exit_status_set_free(&s->success_status); | |
96342de6 | 343 | |
44d8db9e LP |
344 | /* This will leak a process, but at least no memory or any of |
345 | * our resources */ | |
5e94833f LP |
346 | service_unwatch_main_pid(s); |
347 | service_unwatch_control_pid(s); | |
3e52541e | 348 | service_unwatch_pid_file(s); |
44d8db9e | 349 | |
05e343b7 | 350 | if (s->bus_name) { |
ac155bb8 | 351 | unit_unwatch_bus_name(u, s->bus_name); |
a1e58e8e | 352 | s->bus_name = mfree(s->bus_name); |
05e343b7 LP |
353 | } |
354 | ||
d8ccf5fd DM |
355 | s->bus_name_owner = mfree(s->bus_name_owner); |
356 | ||
4f2d528d | 357 | service_close_socket_fd(s); |
9d565427 | 358 | s->peer = socket_peer_unref(s->peer); |
4f2d528d | 359 | |
57020a3a | 360 | unit_ref_unset(&s->accept_socket); |
f976f3f6 | 361 | |
bb242b7b MO |
362 | service_stop_watchdog(s); |
363 | ||
718db961 | 364 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
a354329f | 365 | |
7eb2a8a1 | 366 | service_release_resources(u); |
718db961 LP |
367 | } |
368 | ||
2339fc93 LP |
369 | static int on_fd_store_io(sd_event_source *e, int fd, uint32_t revents, void *userdata) { |
370 | ServiceFDStore *fs = userdata; | |
371 | ||
372 | assert(e); | |
373 | assert(fs); | |
374 | ||
375 | /* If we get either EPOLLHUP or EPOLLERR, it's time to remove this entry from the fd store */ | |
16f70d63 ZJS |
376 | log_unit_debug(UNIT(fs->service), |
377 | "Received %s on stored fd %d (%s), closing.", | |
378 | revents & EPOLLERR ? "EPOLLERR" : "EPOLLHUP", | |
379 | fs->fd, strna(fs->fdname)); | |
2339fc93 LP |
380 | service_fd_store_unlink(fs); |
381 | return 0; | |
382 | } | |
383 | ||
8dd4c05b | 384 | static int service_add_fd_store(Service *s, int fd, const char *name) { |
2339fc93 LP |
385 | ServiceFDStore *fs; |
386 | int r; | |
387 | ||
9021ff17 ZJS |
388 | /* fd is always consumed if we return >= 0 */ |
389 | ||
2339fc93 LP |
390 | assert(s); |
391 | assert(fd >= 0); | |
392 | ||
393 | if (s->n_fd_store >= s->n_fd_store_max) | |
b0924635 ZJS |
394 | return -EXFULL; /* Our store is full. |
395 | * Use this errno rather than E[NM]FILE to distinguish from | |
396 | * the case where systemd itself hits the file limit. */ | |
2339fc93 LP |
397 | |
398 | LIST_FOREACH(fd_store, fs, s->fd_store) { | |
399 | r = same_fd(fs->fd, fd); | |
400 | if (r < 0) | |
401 | return r; | |
402 | if (r > 0) { | |
2339fc93 | 403 | safe_close(fd); |
9021ff17 | 404 | return 0; /* fd already included */ |
2339fc93 LP |
405 | } |
406 | } | |
407 | ||
408 | fs = new0(ServiceFDStore, 1); | |
409 | if (!fs) | |
410 | return -ENOMEM; | |
411 | ||
412 | fs->fd = fd; | |
413 | fs->service = s; | |
8dd4c05b | 414 | fs->fdname = strdup(name ?: "stored"); |
17dec0f7 | 415 | if (!fs->fdname) { |
416 | free(fs); | |
8dd4c05b | 417 | return -ENOMEM; |
17dec0f7 | 418 | } |
2339fc93 LP |
419 | |
420 | r = sd_event_add_io(UNIT(s)->manager->event, &fs->event_source, fd, 0, on_fd_store_io, fs); | |
3ceb72e5 | 421 | if (r < 0 && r != -EPERM) { /* EPERM indicates fds that aren't pollable, which is OK */ |
8dd4c05b | 422 | free(fs->fdname); |
2339fc93 LP |
423 | free(fs); |
424 | return r; | |
3ceb72e5 LP |
425 | } else if (r >= 0) |
426 | (void) sd_event_source_set_description(fs->event_source, "service-fd-store"); | |
7dfbe2e3 | 427 | |
2339fc93 LP |
428 | LIST_PREPEND(fd_store, s->fd_store, fs); |
429 | s->n_fd_store++; | |
430 | ||
9021ff17 | 431 | return 1; /* fd newly stored */ |
2339fc93 LP |
432 | } |
433 | ||
8dd4c05b | 434 | static int service_add_fd_store_set(Service *s, FDSet *fds, const char *name) { |
2339fc93 LP |
435 | int r; |
436 | ||
437 | assert(s); | |
438 | ||
b0924635 | 439 | while (fdset_size(fds) > 0) { |
2339fc93 LP |
440 | _cleanup_close_ int fd = -1; |
441 | ||
442 | fd = fdset_steal_first(fds); | |
443 | if (fd < 0) | |
444 | break; | |
445 | ||
8dd4c05b | 446 | r = service_add_fd_store(s, fd, name); |
b0924635 ZJS |
447 | if (r == -EXFULL) |
448 | return log_unit_warning_errno(UNIT(s), r, | |
449 | "Cannot store more fds than FileDescriptorStoreMax=%u, closing remaining.", | |
450 | s->n_fd_store_max); | |
2339fc93 | 451 | if (r < 0) |
b0924635 | 452 | return log_unit_error_errno(UNIT(s), r, "Failed to add fd to store: %m"); |
9021ff17 | 453 | if (r > 0) |
16f70d63 | 454 | log_unit_debug(UNIT(s), "Added fd %u (%s) to fd store.", fd, strna(name)); |
9021ff17 | 455 | fd = -1; |
2339fc93 LP |
456 | } |
457 | ||
2339fc93 LP |
458 | return 0; |
459 | } | |
460 | ||
e78ee06d LP |
461 | static void service_remove_fd_store(Service *s, const char *name) { |
462 | ServiceFDStore *fs, *n; | |
463 | ||
464 | assert(s); | |
465 | assert(name); | |
466 | ||
467 | LIST_FOREACH_SAFE(fd_store, fs, n, s->fd_store) { | |
468 | if (!streq(fs->fdname, name)) | |
469 | continue; | |
470 | ||
471 | log_unit_debug(UNIT(s), "Got explicit request to remove fd %i (%s), closing.", fs->fd, name); | |
472 | service_fd_store_unlink(fs); | |
473 | } | |
474 | } | |
475 | ||
718db961 LP |
476 | static int service_arm_timer(Service *s, usec_t usec) { |
477 | int r; | |
478 | ||
479 | assert(s); | |
480 | ||
718db961 | 481 | if (s->timer_event_source) { |
36c16a7c | 482 | r = sd_event_source_set_time(s->timer_event_source, usec); |
718db961 LP |
483 | if (r < 0) |
484 | return r; | |
485 | ||
486 | return sd_event_source_set_enabled(s->timer_event_source, SD_EVENT_ONESHOT); | |
487 | } | |
488 | ||
36c16a7c LP |
489 | if (usec == USEC_INFINITY) |
490 | return 0; | |
491 | ||
7dfbe2e3 | 492 | r = sd_event_add_time( |
6a0f1f6d LP |
493 | UNIT(s)->manager->event, |
494 | &s->timer_event_source, | |
495 | CLOCK_MONOTONIC, | |
36c16a7c | 496 | usec, 0, |
6a0f1f6d | 497 | service_dispatch_timer, s); |
7dfbe2e3 TG |
498 | if (r < 0) |
499 | return r; | |
500 | ||
501 | (void) sd_event_source_set_description(s->timer_event_source, "service-timer"); | |
502 | ||
503 | return 0; | |
44d8db9e LP |
504 | } |
505 | ||
243b1432 LP |
506 | static int service_verify(Service *s) { |
507 | assert(s); | |
508 | ||
1124fe6f | 509 | if (UNIT(s)->load_state != UNIT_LOADED) |
243b1432 LP |
510 | return 0; |
511 | ||
96fb8242 | 512 | if (!s->exec_command[SERVICE_EXEC_START] && !s->exec_command[SERVICE_EXEC_STOP]) { |
f2341e0a | 513 | log_unit_error(UNIT(s), "Service lacks both ExecStart= and ExecStop= setting. Refusing."); |
243b1432 LP |
514 | return -EINVAL; |
515 | } | |
516 | ||
96fb8242 | 517 | if (s->type != SERVICE_ONESHOT && !s->exec_command[SERVICE_EXEC_START]) { |
f2341e0a | 518 | log_unit_error(UNIT(s), "Service has no ExecStart= setting, which is only allowed for Type=oneshot services. Refusing."); |
96fb8242 LP |
519 | return -EINVAL; |
520 | } | |
521 | ||
522 | if (!s->remain_after_exit && !s->exec_command[SERVICE_EXEC_START]) { | |
f2341e0a | 523 | log_unit_error(UNIT(s), "Service has no ExecStart= setting, which is only allowed for RemainAfterExit=yes services. Refusing."); |
96fb8242 LP |
524 | return -EINVAL; |
525 | } | |
526 | ||
527 | if (s->type != SERVICE_ONESHOT && s->exec_command[SERVICE_EXEC_START]->command_next) { | |
f2341e0a | 528 | log_unit_error(UNIT(s), "Service has more than one ExecStart= setting, which is only allowed for Type=oneshot services. Refusing."); |
6cf6bbc2 LP |
529 | return -EINVAL; |
530 | } | |
531 | ||
b0693d30 | 532 | if (s->type == SERVICE_ONESHOT && s->restart != SERVICE_RESTART_NO) { |
f2341e0a | 533 | log_unit_error(UNIT(s), "Service has Restart= setting other than no, which isn't allowed for Type=oneshot services. Refusing."); |
37520c1b LP |
534 | return -EINVAL; |
535 | } | |
536 | ||
55ebf98c | 537 | if (s->type == SERVICE_ONESHOT && !exit_status_set_is_empty(&s->restart_force_status)) { |
f2341e0a | 538 | log_unit_error(UNIT(s), "Service has RestartForceStatus= set, which isn't allowed for Type=oneshot services. Refusing."); |
b0693d30 MW |
539 | return -EINVAL; |
540 | } | |
541 | ||
05e343b7 | 542 | if (s->type == SERVICE_DBUS && !s->bus_name) { |
f2341e0a | 543 | log_unit_error(UNIT(s), "Service is of type D-Bus but no D-Bus service name has been specified. Refusing."); |
4d0e5dbd LP |
544 | return -EINVAL; |
545 | } | |
546 | ||
7e2668c6 | 547 | if (s->bus_name && s->type != SERVICE_DBUS) |
f2341e0a | 548 | log_unit_warning(UNIT(s), "Service has a D-Bus service name specified, but is not of type dbus. Ignoring."); |
7e2668c6 | 549 | |
3742095b | 550 | if (s->exec_context.pam_name && !IN_SET(s->kill_context.kill_mode, KILL_CONTROL_GROUP, KILL_MIXED)) { |
f2341e0a | 551 | log_unit_error(UNIT(s), "Service has PAM enabled. Kill mode must be set to 'control-group' or 'mixed'. Refusing."); |
05e343b7 LP |
552 | return -EINVAL; |
553 | } | |
554 | ||
6b7e5923 PS |
555 | if (s->usb_function_descriptors && !s->usb_function_strings) |
556 | log_unit_warning(UNIT(s), "Service has USBFunctionDescriptors= setting, but no USBFunctionStrings=. Ignoring."); | |
557 | ||
558 | if (!s->usb_function_descriptors && s->usb_function_strings) | |
559 | log_unit_warning(UNIT(s), "Service has USBFunctionStrings= setting, but no USBFunctionDescriptors=. Ignoring."); | |
560 | ||
36c16a7c LP |
561 | if (s->runtime_max_usec != USEC_INFINITY && s->type == SERVICE_ONESHOT) |
562 | log_unit_warning(UNIT(s), "MaxRuntimeSec= has no effect in combination with Type=oneshot. Ignoring."); | |
563 | ||
243b1432 LP |
564 | return 0; |
565 | } | |
566 | ||
a40eb732 LP |
567 | static int service_add_default_dependencies(Service *s) { |
568 | int r; | |
569 | ||
570 | assert(s); | |
571 | ||
45f06b34 LP |
572 | if (!UNIT(s)->default_dependencies) |
573 | return 0; | |
574 | ||
a40eb732 LP |
575 | /* Add a number of automatic dependencies useful for the |
576 | * majority of services. */ | |
577 | ||
463d0d15 | 578 | if (MANAGER_IS_SYSTEM(UNIT(s)->manager)) { |
cb4c247d LP |
579 | /* First, pull in the really early boot stuff, and |
580 | * require it, so that we fail if we can't acquire | |
581 | * it. */ | |
582 | ||
eef85c4a | 583 | r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, NULL, true, UNIT_DEPENDENCY_DEFAULT); |
cb4c247d LP |
584 | if (r < 0) |
585 | return r; | |
586 | } else { | |
587 | ||
588 | /* In the --user instance there's no sysinit.target, | |
589 | * in that case require basic.target instead. */ | |
590 | ||
eef85c4a | 591 | r = unit_add_dependency_by_name(UNIT(s), UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true, UNIT_DEPENDENCY_DEFAULT); |
cb4c247d LP |
592 | if (r < 0) |
593 | return r; | |
594 | } | |
595 | ||
596 | /* Second, if the rest of the base system is in the same | |
597 | * transaction, order us after it, but do not pull it in or | |
598 | * even require it. */ | |
eef85c4a | 599 | r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_BASIC_TARGET, NULL, true, UNIT_DEPENDENCY_DEFAULT); |
fccd44ec KS |
600 | if (r < 0) |
601 | return r; | |
a40eb732 | 602 | |
cb4c247d | 603 | /* Third, add us in for normal shutdown. */ |
eef85c4a | 604 | return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true, UNIT_DEPENDENCY_DEFAULT); |
a40eb732 LP |
605 | } |
606 | ||
4dfc092a LP |
607 | static void service_fix_output(Service *s) { |
608 | assert(s); | |
609 | ||
08f3be7a LP |
610 | /* If nothing has been explicitly configured, patch default output in. If input is socket/tty we avoid this |
611 | * however, since in that case we want output to default to the same place as we read input from. */ | |
4dfc092a LP |
612 | |
613 | if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT && | |
614 | s->exec_context.std_output == EXEC_OUTPUT_INHERIT && | |
615 | s->exec_context.std_input == EXEC_INPUT_NULL) | |
1124fe6f | 616 | s->exec_context.std_error = UNIT(s)->manager->default_std_error; |
4dfc092a LP |
617 | |
618 | if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT && | |
619 | s->exec_context.std_input == EXEC_INPUT_NULL) | |
1124fe6f | 620 | s->exec_context.std_output = UNIT(s)->manager->default_std_output; |
08f3be7a LP |
621 | |
622 | if (s->exec_context.std_input == EXEC_INPUT_NULL && | |
623 | s->exec_context.stdin_data_size > 0) | |
624 | s->exec_context.std_input = EXEC_INPUT_DATA; | |
4dfc092a LP |
625 | } |
626 | ||
45f06b34 LP |
627 | static int service_setup_bus_name(Service *s) { |
628 | int r; | |
629 | ||
630 | assert(s); | |
631 | ||
632 | if (!s->bus_name) | |
633 | return 0; | |
634 | ||
eef85c4a | 635 | r = unit_add_dependency_by_name(UNIT(s), UNIT_REQUIRES, SPECIAL_DBUS_SOCKET, NULL, true, UNIT_DEPENDENCY_FILE); |
222953e8 DR |
636 | if (r < 0) |
637 | return log_unit_error_errno(UNIT(s), r, "Failed to add dependency on " SPECIAL_DBUS_SOCKET ": %m"); | |
45f06b34 | 638 | |
a132bef0 | 639 | /* We always want to be ordered against dbus.socket if both are in the transaction. */ |
eef85c4a | 640 | r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_DBUS_SOCKET, NULL, true, UNIT_DEPENDENCY_FILE); |
45f06b34 | 641 | if (r < 0) |
92bed462 | 642 | return log_unit_error_errno(UNIT(s), r, "Failed to add dependency on " SPECIAL_DBUS_SOCKET ": %m"); |
45f06b34 LP |
643 | |
644 | r = unit_watch_bus_name(UNIT(s), s->bus_name); | |
645 | if (r == -EEXIST) | |
646 | return log_unit_error_errno(UNIT(s), r, "Two services allocated for the same bus name %s, refusing operation.", s->bus_name); | |
647 | if (r < 0) | |
648 | return log_unit_error_errno(UNIT(s), r, "Cannot watch bus name %s: %m", s->bus_name); | |
649 | ||
650 | return 0; | |
651 | } | |
652 | ||
8545f7ce LP |
653 | static int service_add_extras(Service *s) { |
654 | int r; | |
655 | ||
656 | assert(s); | |
657 | ||
658 | if (s->type == _SERVICE_TYPE_INVALID) { | |
659 | /* Figure out a type automatically */ | |
660 | if (s->bus_name) | |
661 | s->type = SERVICE_DBUS; | |
662 | else if (s->exec_command[SERVICE_EXEC_START]) | |
663 | s->type = SERVICE_SIMPLE; | |
664 | else | |
665 | s->type = SERVICE_ONESHOT; | |
666 | } | |
667 | ||
668 | /* Oneshot services have disabled start timeout by default */ | |
669 | if (s->type == SERVICE_ONESHOT && !s->start_timeout_defined) | |
36c16a7c | 670 | s->timeout_start_usec = USEC_INFINITY; |
8545f7ce LP |
671 | |
672 | service_fix_output(s); | |
673 | ||
674 | r = unit_patch_contexts(UNIT(s)); | |
675 | if (r < 0) | |
676 | return r; | |
677 | ||
678 | r = unit_add_exec_dependencies(UNIT(s), &s->exec_context); | |
679 | if (r < 0) | |
680 | return r; | |
681 | ||
d79200e2 | 682 | r = unit_set_default_slice(UNIT(s)); |
8545f7ce LP |
683 | if (r < 0) |
684 | return r; | |
685 | ||
686 | if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE) | |
687 | s->notify_access = NOTIFY_MAIN; | |
688 | ||
689 | if (s->watchdog_usec > 0 && s->notify_access == NOTIFY_NONE) | |
690 | s->notify_access = NOTIFY_MAIN; | |
691 | ||
45f06b34 LP |
692 | r = service_add_default_dependencies(s); |
693 | if (r < 0) | |
694 | return r; | |
8545f7ce | 695 | |
45f06b34 LP |
696 | r = service_setup_bus_name(s); |
697 | if (r < 0) | |
698 | return r; | |
8545f7ce LP |
699 | |
700 | return 0; | |
701 | } | |
702 | ||
e537352b | 703 | static int service_load(Unit *u) { |
e537352b | 704 | Service *s = SERVICE(u); |
8bb2d17d | 705 | int r; |
e537352b LP |
706 | |
707 | assert(s); | |
1e2e8133 | 708 | |
5cb5a6ff | 709 | /* Load a .service file */ |
c2756a68 LP |
710 | r = unit_load_fragment(u); |
711 | if (r < 0) | |
5cb5a6ff LP |
712 | return r; |
713 | ||
23a177ef | 714 | /* Still nothing found? Then let's give up */ |
ac155bb8 | 715 | if (u->load_state == UNIT_STUB) |
23a177ef | 716 | return -ENOENT; |
034c6ed7 | 717 | |
23a177ef | 718 | /* This is a new unit? Then let's add in some extras */ |
ac155bb8 | 719 | if (u->load_state == UNIT_LOADED) { |
c2756a68 LP |
720 | |
721 | /* We were able to load something, then let's add in | |
722 | * the dropin directories. */ | |
723 | r = unit_load_dropin(u); | |
724 | if (r < 0) | |
725 | return r; | |
726 | ||
8545f7ce LP |
727 | /* This is a new unit? Then let's add in some |
728 | * extras */ | |
729 | r = service_add_extras(s); | |
598459ce LP |
730 | if (r < 0) |
731 | return r; | |
8e274523 LP |
732 | } |
733 | ||
243b1432 | 734 | return service_verify(s); |
034c6ed7 LP |
735 | } |
736 | ||
87f0e418 | 737 | static void service_dump(Unit *u, FILE *f, const char *prefix) { |
5cb5a6ff | 738 | ServiceExecCommand c; |
87f0e418 | 739 | Service *s = SERVICE(u); |
47be870b | 740 | const char *prefix2; |
5cb5a6ff LP |
741 | |
742 | assert(s); | |
743 | ||
4c940960 | 744 | prefix = strempty(prefix); |
63c372cb | 745 | prefix2 = strjoina(prefix, "\t"); |
44d8db9e | 746 | |
5cb5a6ff | 747 | fprintf(f, |
81a2b7ce | 748 | "%sService State: %s\n" |
f42806df LP |
749 | "%sResult: %s\n" |
750 | "%sReload Result: %s\n" | |
81a2b7ce | 751 | "%sPermissionsStartOnly: %s\n" |
8e274523 | 752 | "%sRootDirectoryStartOnly: %s\n" |
02ee865a | 753 | "%sRemainAfterExit: %s\n" |
3185a36b | 754 | "%sGuessMainPID: %s\n" |
c952c6ec | 755 | "%sType: %s\n" |
2cf3143a | 756 | "%sRestart: %s\n" |
308d72dc LP |
757 | "%sNotifyAccess: %s\n" |
758 | "%sNotifyState: %s\n", | |
81a2b7ce | 759 | prefix, service_state_to_string(s->state), |
f42806df LP |
760 | prefix, service_result_to_string(s->result), |
761 | prefix, service_result_to_string(s->reload_result), | |
81a2b7ce | 762 | prefix, yes_no(s->permissions_start_only), |
8e274523 | 763 | prefix, yes_no(s->root_directory_start_only), |
02ee865a | 764 | prefix, yes_no(s->remain_after_exit), |
3185a36b | 765 | prefix, yes_no(s->guess_main_pid), |
c952c6ec | 766 | prefix, service_type_to_string(s->type), |
2cf3143a | 767 | prefix, service_restart_to_string(s->restart), |
308d72dc LP |
768 | prefix, notify_access_to_string(s->notify_access), |
769 | prefix, notify_state_to_string(s->notify_state)); | |
5cb5a6ff | 770 | |
70123e68 LP |
771 | if (s->control_pid > 0) |
772 | fprintf(f, | |
ccd06097 ZJS |
773 | "%sControl PID: "PID_FMT"\n", |
774 | prefix, s->control_pid); | |
70123e68 LP |
775 | |
776 | if (s->main_pid > 0) | |
777 | fprintf(f, | |
ccd06097 | 778 | "%sMain PID: "PID_FMT"\n" |
6dfa5494 LP |
779 | "%sMain PID Known: %s\n" |
780 | "%sMain PID Alien: %s\n", | |
ccd06097 | 781 | prefix, s->main_pid, |
6dfa5494 LP |
782 | prefix, yes_no(s->main_pid_known), |
783 | prefix, yes_no(s->main_pid_alien)); | |
70123e68 | 784 | |
034c6ed7 LP |
785 | if (s->pid_file) |
786 | fprintf(f, | |
787 | "%sPIDFile: %s\n", | |
788 | prefix, s->pid_file); | |
789 | ||
05e343b7 LP |
790 | if (s->bus_name) |
791 | fprintf(f, | |
792 | "%sBusName: %s\n" | |
793 | "%sBus Name Good: %s\n", | |
794 | prefix, s->bus_name, | |
795 | prefix, yes_no(s->bus_name_good)); | |
796 | ||
9dfb64f8 ZJS |
797 | if (UNIT_ISSET(s->accept_socket)) |
798 | fprintf(f, | |
799 | "%sAccept Socket: %s\n", | |
800 | prefix, UNIT_DEREF(s->accept_socket)->id); | |
801 | ||
4819ff03 | 802 | kill_context_dump(&s->kill_context, f, prefix); |
5cb5a6ff LP |
803 | exec_context_dump(&s->exec_context, f, prefix); |
804 | ||
e537352b | 805 | for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) { |
5cb5a6ff | 806 | |
44d8db9e LP |
807 | if (!s->exec_command[c]) |
808 | continue; | |
809 | ||
40d50879 | 810 | fprintf(f, "%s-> %s:\n", |
94f04347 | 811 | prefix, service_exec_command_to_string(c)); |
44d8db9e LP |
812 | |
813 | exec_command_dump_list(s->exec_command[c], f, prefix2); | |
5cb5a6ff | 814 | } |
44d8db9e | 815 | |
8c47c732 LP |
816 | if (s->status_text) |
817 | fprintf(f, "%sStatus Text: %s\n", | |
818 | prefix, s->status_text); | |
a354329f | 819 | |
ece174c5 | 820 | if (s->n_fd_store_max > 0) |
a354329f LP |
821 | fprintf(f, |
822 | "%sFile Descriptor Store Max: %u\n" | |
823 | "%sFile Descriptor Store Current: %u\n", | |
824 | prefix, s->n_fd_store_max, | |
825 | prefix, s->n_fd_store); | |
18f573aa LP |
826 | |
827 | cgroup_context_dump(&s->cgroup_context, f, prefix); | |
5cb5a6ff LP |
828 | } |
829 | ||
c5419d42 | 830 | static int service_load_pid_file(Service *s, bool may_warn) { |
7fd1b19b | 831 | _cleanup_free_ char *k = NULL; |
034c6ed7 | 832 | int r; |
5925dd3c | 833 | pid_t pid; |
034c6ed7 LP |
834 | |
835 | assert(s); | |
836 | ||
034c6ed7 | 837 | if (!s->pid_file) |
13230d5d | 838 | return -ENOENT; |
034c6ed7 | 839 | |
117dcc57 ZJS |
840 | r = read_one_line_file(s->pid_file, &k); |
841 | if (r < 0) { | |
c5419d42 | 842 | if (may_warn) |
f2341e0a | 843 | 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 | 844 | return r; |
5375410b | 845 | } |
034c6ed7 | 846 | |
5925dd3c | 847 | r = parse_pid(k, &pid); |
bc41f93e ZJS |
848 | if (r < 0) { |
849 | if (may_warn) | |
f2341e0a | 850 | log_unit_info_errno(UNIT(s), r, "Failed to read PID from file %s: %m", s->pid_file); |
5925dd3c | 851 | return r; |
bc41f93e | 852 | } |
406eaf93 | 853 | |
9f5650ae | 854 | if (!pid_is_alive(pid)) { |
c5419d42 | 855 | if (may_warn) |
f2341e0a | 856 | 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 |
857 | return -ESRCH; |
858 | } | |
859 | ||
db01f8b3 MS |
860 | if (s->main_pid_known) { |
861 | if (pid == s->main_pid) | |
862 | return 0; | |
863 | ||
f2341e0a | 864 | log_unit_debug(UNIT(s), "Main PID changing: "PID_FMT" -> "PID_FMT, s->main_pid, pid); |
8bb2d17d | 865 | |
db01f8b3 MS |
866 | service_unwatch_main_pid(s); |
867 | s->main_pid_known = false; | |
3a111838 | 868 | } else |
f2341e0a | 869 | log_unit_debug(UNIT(s), "Main PID loaded: "PID_FMT, pid); |
db01f8b3 | 870 | |
117dcc57 ZJS |
871 | r = service_set_main_pid(s, pid); |
872 | if (r < 0) | |
16f6025e LP |
873 | return r; |
874 | ||
117dcc57 | 875 | r = unit_watch_pid(UNIT(s), pid); |
e8b509d3 LP |
876 | if (r < 0) /* FIXME: we need to do something here */ |
877 | return log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" for service: %m", pid); | |
034c6ed7 LP |
878 | |
879 | return 0; | |
880 | } | |
881 | ||
783e05d6 | 882 | static void service_search_main_pid(Service *s) { |
efdb0237 | 883 | pid_t pid = 0; |
4fbf50b3 LP |
884 | int r; |
885 | ||
886 | assert(s); | |
887 | ||
3185a36b LP |
888 | /* If we know it anyway, don't ever fallback to unreliable |
889 | * heuristics */ | |
4fbf50b3 | 890 | if (s->main_pid_known) |
783e05d6 | 891 | return; |
4fbf50b3 | 892 | |
3185a36b | 893 | if (!s->guess_main_pid) |
783e05d6 | 894 | return; |
3185a36b | 895 | |
4fbf50b3 LP |
896 | assert(s->main_pid <= 0); |
897 | ||
783e05d6 ZJS |
898 | if (unit_search_main_pid(UNIT(s), &pid) < 0) |
899 | return; | |
4fbf50b3 | 900 | |
f2341e0a | 901 | log_unit_debug(UNIT(s), "Main PID guessed: "PID_FMT, pid); |
783e05d6 ZJS |
902 | if (service_set_main_pid(s, pid) < 0) |
903 | return; | |
4fbf50b3 | 904 | |
117dcc57 | 905 | r = unit_watch_pid(UNIT(s), pid); |
783e05d6 | 906 | if (r < 0) |
4fbf50b3 | 907 | /* FIXME: we need to do something here */ |
f2341e0a | 908 | log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" from: %m", pid); |
4fbf50b3 LP |
909 | } |
910 | ||
034c6ed7 LP |
911 | static void service_set_state(Service *s, ServiceState state) { |
912 | ServiceState old_state; | |
e056b01d | 913 | const UnitActiveState *table; |
842129f5 | 914 | |
5cb5a6ff LP |
915 | assert(s); |
916 | ||
e056b01d LP |
917 | table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
918 | ||
034c6ed7 | 919 | old_state = s->state; |
5cb5a6ff | 920 | s->state = state; |
034c6ed7 | 921 | |
3a111838 MS |
922 | service_unwatch_pid_file(s); |
923 | ||
842129f5 LP |
924 | if (!IN_SET(state, |
925 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
36c16a7c | 926 | SERVICE_RUNNING, |
842129f5 | 927 | SERVICE_RELOAD, |
57614eb1 | 928 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
842129f5 LP |
929 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL, |
930 | SERVICE_AUTO_RESTART)) | |
718db961 | 931 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
034c6ed7 | 932 | |
842129f5 LP |
933 | if (!IN_SET(state, |
934 | SERVICE_START, SERVICE_START_POST, | |
935 | SERVICE_RUNNING, SERVICE_RELOAD, | |
57614eb1 | 936 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf108e55 | 937 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
5e94833f | 938 | service_unwatch_main_pid(s); |
867b3b7d LP |
939 | s->main_command = NULL; |
940 | } | |
034c6ed7 | 941 | |
842129f5 LP |
942 | if (!IN_SET(state, |
943 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
944 | SERVICE_RELOAD, | |
57614eb1 | 945 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
842129f5 | 946 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
5e94833f | 947 | service_unwatch_control_pid(s); |
034c6ed7 | 948 | s->control_command = NULL; |
a16e1123 | 949 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; |
e537352b | 950 | } |
034c6ed7 | 951 | |
a911bb9a LP |
952 | if (IN_SET(state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART)) |
953 | unit_unwatch_all_pids(UNIT(s)); | |
954 | ||
842129f5 LP |
955 | if (!IN_SET(state, |
956 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
957 | SERVICE_RUNNING, SERVICE_RELOAD, | |
57614eb1 LP |
958 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
959 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL) && | |
5cc3985e | 960 | !(state == SERVICE_DEAD && UNIT(s)->job)) |
4f2d528d LP |
961 | service_close_socket_fd(s); |
962 | ||
7596e9e1 | 963 | if (!IN_SET(state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
a6927d7f MO |
964 | service_stop_watchdog(s); |
965 | ||
f6023656 LP |
966 | /* For the inactive states unit_notify() will trim the cgroup, |
967 | * but for exit we have to do that ourselves... */ | |
2c289ea8 | 968 | if (state == SERVICE_EXITED && !MANAGER_IS_RELOADING(UNIT(s)->manager)) |
efdb0237 | 969 | unit_prune_cgroup(UNIT(s)); |
f6023656 | 970 | |
9cd86184 OB |
971 | /* For remain_after_exit services, let's see if we can "release" the |
972 | * hold on the console, since unit_notify() only does that in case of | |
973 | * change of state */ | |
f49650ce LP |
974 | if (state == SERVICE_EXITED && |
975 | s->remain_after_exit && | |
9cd86184 | 976 | UNIT(s)->manager->n_on_console > 0) { |
f49650ce LP |
977 | |
978 | ExecContext *ec; | |
979 | ||
980 | ec = unit_get_exec_context(UNIT(s)); | |
9cd86184 OB |
981 | if (ec && exec_context_may_touch_console(ec)) { |
982 | Manager *m = UNIT(s)->manager; | |
983 | ||
313cefa1 | 984 | m->n_on_console--; |
9cd86184 OB |
985 | if (m->n_on_console == 0) |
986 | /* unset no_console_output flag, since the console is free */ | |
987 | m->no_console_output = false; | |
988 | } | |
989 | } | |
990 | ||
e537352b | 991 | if (old_state != state) |
f2341e0a | 992 | log_unit_debug(UNIT(s), "Changed %s -> %s", service_state_to_string(old_state), service_state_to_string(state)); |
acbb0225 | 993 | |
e056b01d | 994 | unit_notify(UNIT(s), table[old_state], table[state], s->reload_result == SERVICE_SUCCESS); |
034c6ed7 LP |
995 | } |
996 | ||
36c16a7c LP |
997 | static usec_t service_coldplug_timeout(Service *s) { |
998 | assert(s); | |
999 | ||
1000 | switch (s->deserialized_state) { | |
1001 | ||
1002 | case SERVICE_START_PRE: | |
1003 | case SERVICE_START: | |
1004 | case SERVICE_START_POST: | |
1005 | case SERVICE_RELOAD: | |
1006 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->timeout_start_usec); | |
1007 | ||
1008 | case SERVICE_RUNNING: | |
1009 | return usec_add(UNIT(s)->active_enter_timestamp.monotonic, s->runtime_max_usec); | |
1010 | ||
1011 | case SERVICE_STOP: | |
1012 | case SERVICE_STOP_SIGABRT: | |
1013 | case SERVICE_STOP_SIGTERM: | |
1014 | case SERVICE_STOP_SIGKILL: | |
1015 | case SERVICE_STOP_POST: | |
1016 | case SERVICE_FINAL_SIGTERM: | |
1017 | case SERVICE_FINAL_SIGKILL: | |
1018 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->timeout_stop_usec); | |
1019 | ||
1020 | case SERVICE_AUTO_RESTART: | |
1021 | return usec_add(UNIT(s)->inactive_enter_timestamp.monotonic, s->restart_usec); | |
1022 | ||
1023 | default: | |
1024 | return USEC_INFINITY; | |
1025 | } | |
1026 | } | |
1027 | ||
be847e82 | 1028 | static int service_coldplug(Unit *u) { |
a16e1123 LP |
1029 | Service *s = SERVICE(u); |
1030 | int r; | |
1031 | ||
1032 | assert(s); | |
1033 | assert(s->state == SERVICE_DEAD); | |
1034 | ||
930d2838 LP |
1035 | if (s->deserialized_state == s->state) |
1036 | return 0; | |
6c12b52e | 1037 | |
36c16a7c LP |
1038 | r = service_arm_timer(s, service_coldplug_timeout(s)); |
1039 | if (r < 0) | |
1040 | return r; | |
a911bb9a | 1041 | |
930d2838 LP |
1042 | if (s->main_pid > 0 && |
1043 | pid_is_unwaited(s->main_pid) && | |
1044 | ((s->deserialized_state == SERVICE_START && IN_SET(s->type, SERVICE_FORKING, SERVICE_DBUS, SERVICE_ONESHOT, SERVICE_NOTIFY)) || | |
1045 | IN_SET(s->deserialized_state, | |
1046 | SERVICE_START, SERVICE_START_POST, | |
1047 | SERVICE_RUNNING, SERVICE_RELOAD, | |
1048 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, | |
1049 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL))) { | |
1050 | r = unit_watch_pid(UNIT(s), s->main_pid); | |
1051 | if (r < 0) | |
1052 | return r; | |
1053 | } | |
bb242b7b | 1054 | |
930d2838 LP |
1055 | if (s->control_pid > 0 && |
1056 | pid_is_unwaited(s->control_pid) && | |
1057 | IN_SET(s->deserialized_state, | |
1058 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
1059 | SERVICE_RELOAD, | |
1060 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, | |
1061 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { | |
1062 | r = unit_watch_pid(UNIT(s), s->control_pid); | |
1063 | if (r < 0) | |
1064 | return r; | |
a16e1123 | 1065 | } |
92c1622e | 1066 | |
930d2838 LP |
1067 | if (!IN_SET(s->deserialized_state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART)) |
1068 | unit_watch_all_pids(UNIT(s)); | |
1069 | ||
1070 | if (IN_SET(s->deserialized_state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) | |
1071 | service_start_watchdog(s); | |
1072 | ||
29206d46 LP |
1073 | if (!IN_SET(s->deserialized_state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART)) |
1074 | (void) unit_setup_dynamic_creds(u); | |
1075 | ||
3ebcd323 ZJS |
1076 | if (UNIT_ISSET(s->accept_socket)) { |
1077 | Socket* socket = SOCKET(UNIT_DEREF(s->accept_socket)); | |
1078 | ||
1079 | if (socket->max_connections_per_source > 0) { | |
1080 | SocketPeer *peer; | |
1081 | ||
1082 | /* Make a best-effort attempt at bumping the connection count */ | |
1083 | if (socket_acquire_peer(socket, s->socket_fd, &peer) > 0) { | |
1084 | socket_peer_unref(s->peer); | |
1085 | s->peer = peer; | |
1086 | } | |
1087 | } | |
1088 | } | |
1089 | ||
930d2838 | 1090 | service_set_state(s, s->deserialized_state); |
a16e1123 LP |
1091 | return 0; |
1092 | } | |
1093 | ||
4c47affc FB |
1094 | static int service_collect_fds(Service *s, |
1095 | int **fds, | |
1096 | char ***fd_names, | |
1097 | unsigned *n_storage_fds, | |
1098 | unsigned *n_socket_fds) { | |
1099 | ||
8dd4c05b | 1100 | _cleanup_strv_free_ char **rfd_names = NULL; |
a354329f | 1101 | _cleanup_free_ int *rfds = NULL; |
4c47affc FB |
1102 | unsigned rn_socket_fds = 0, rn_storage_fds = 0; |
1103 | int r; | |
44d8db9e LP |
1104 | |
1105 | assert(s); | |
1106 | assert(fds); | |
8dd4c05b | 1107 | assert(fd_names); |
9b141911 | 1108 | assert(n_socket_fds); |
44d8db9e | 1109 | |
8dd4c05b | 1110 | if (s->socket_fd >= 0) { |
6cf6bbc2 | 1111 | |
8dd4c05b | 1112 | /* Pass the per-connection socket */ |
57020a3a | 1113 | |
8dd4c05b LP |
1114 | rfds = new(int, 1); |
1115 | if (!rfds) | |
1116 | return -ENOMEM; | |
1117 | rfds[0] = s->socket_fd; | |
57020a3a | 1118 | |
8dd4c05b LP |
1119 | rfd_names = strv_new("connection", NULL); |
1120 | if (!rfd_names) | |
1121 | return -ENOMEM; | |
44d8db9e | 1122 | |
4c47affc | 1123 | rn_socket_fds = 1; |
8dd4c05b LP |
1124 | } else { |
1125 | Iterator i; | |
eef85c4a | 1126 | void *v; |
8dd4c05b | 1127 | Unit *u; |
44d8db9e | 1128 | |
8dd4c05b | 1129 | /* Pass all our configured sockets for singleton services */ |
44d8db9e | 1130 | |
eef85c4a | 1131 | HASHMAP_FOREACH_KEY(v, u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) { |
8dd4c05b LP |
1132 | _cleanup_free_ int *cfds = NULL; |
1133 | Socket *sock; | |
1134 | int cn_fds; | |
44d8db9e | 1135 | |
8dd4c05b LP |
1136 | if (u->type != UNIT_SOCKET) |
1137 | continue; | |
44d8db9e | 1138 | |
8dd4c05b | 1139 | sock = SOCKET(u); |
a354329f | 1140 | |
8dd4c05b LP |
1141 | cn_fds = socket_collect_fds(sock, &cfds); |
1142 | if (cn_fds < 0) | |
1143 | return cn_fds; | |
44d8db9e | 1144 | |
8dd4c05b LP |
1145 | if (cn_fds <= 0) |
1146 | continue; | |
79c7626d | 1147 | |
8dd4c05b LP |
1148 | if (!rfds) { |
1149 | rfds = cfds; | |
4c47affc | 1150 | rn_socket_fds = cn_fds; |
8dd4c05b LP |
1151 | |
1152 | cfds = NULL; | |
1153 | } else { | |
1154 | int *t; | |
1155 | ||
4c47affc | 1156 | t = realloc(rfds, (rn_socket_fds + cn_fds) * sizeof(int)); |
8dd4c05b LP |
1157 | if (!t) |
1158 | return -ENOMEM; | |
1159 | ||
4c47affc | 1160 | memcpy(t + rn_socket_fds, cfds, cn_fds * sizeof(int)); |
8dd4c05b LP |
1161 | |
1162 | rfds = t; | |
4c47affc | 1163 | rn_socket_fds += cn_fds; |
8dd4c05b LP |
1164 | } |
1165 | ||
1166 | r = strv_extend_n(&rfd_names, socket_fdname(sock), cn_fds); | |
1167 | if (r < 0) | |
1168 | return r; | |
44d8db9e LP |
1169 | } |
1170 | } | |
1171 | ||
a354329f LP |
1172 | if (s->n_fd_store > 0) { |
1173 | ServiceFDStore *fs; | |
4c47affc | 1174 | unsigned n_fds; |
8dd4c05b | 1175 | char **nl; |
a354329f LP |
1176 | int *t; |
1177 | ||
4c47affc | 1178 | t = realloc(rfds, (rn_socket_fds + s->n_fd_store) * sizeof(int)); |
a354329f LP |
1179 | if (!t) |
1180 | return -ENOMEM; | |
1181 | ||
1182 | rfds = t; | |
8dd4c05b | 1183 | |
4c47affc | 1184 | nl = realloc(rfd_names, (rn_socket_fds + s->n_fd_store + 1) * sizeof(char*)); |
8dd4c05b LP |
1185 | if (!nl) |
1186 | return -ENOMEM; | |
1187 | ||
1188 | rfd_names = nl; | |
4c47affc | 1189 | n_fds = rn_socket_fds; |
8dd4c05b LP |
1190 | |
1191 | LIST_FOREACH(fd_store, fs, s->fd_store) { | |
4c47affc FB |
1192 | rfds[n_fds] = fs->fd; |
1193 | rfd_names[n_fds] = strdup(strempty(fs->fdname)); | |
1194 | if (!rfd_names[n_fds]) | |
8dd4c05b LP |
1195 | return -ENOMEM; |
1196 | ||
4c47affc FB |
1197 | rn_storage_fds++; |
1198 | n_fds++; | |
8dd4c05b LP |
1199 | } |
1200 | ||
4c47affc | 1201 | rfd_names[n_fds] = NULL; |
a354329f LP |
1202 | } |
1203 | ||
44d8db9e | 1204 | *fds = rfds; |
8dd4c05b | 1205 | *fd_names = rfd_names; |
9b141911 | 1206 | *n_socket_fds = rn_socket_fds; |
4c47affc | 1207 | *n_storage_fds = rn_storage_fds; |
3e33402a | 1208 | |
a354329f | 1209 | rfds = NULL; |
8dd4c05b | 1210 | rfd_names = NULL; |
79c7626d | 1211 | |
4c47affc | 1212 | return 0; |
44d8db9e LP |
1213 | } |
1214 | ||
6375bd20 JW |
1215 | static bool service_exec_needs_notify_socket(Service *s, ExecFlags flags) { |
1216 | assert(s); | |
1217 | ||
1218 | /* Notifications are accepted depending on the process and | |
1219 | * the access setting of the service: | |
1220 | * process: \ access: NONE MAIN EXEC ALL | |
1221 | * main no yes yes yes | |
1222 | * control no no yes yes | |
1223 | * other (forked) no no no yes */ | |
1224 | ||
1225 | if (flags & EXEC_IS_CONTROL) | |
1226 | /* A control process */ | |
1227 | return IN_SET(s->notify_access, NOTIFY_EXEC, NOTIFY_ALL); | |
1228 | ||
1229 | /* We only spawn main processes and control processes, so any | |
1230 | * process that is not a control process is a main process */ | |
1231 | return s->notify_access != NOTIFY_NONE; | |
1232 | } | |
1233 | ||
81a2b7ce LP |
1234 | static int service_spawn( |
1235 | Service *s, | |
1236 | ExecCommand *c, | |
21b2ce39 | 1237 | usec_t timeout, |
c39f1ce2 | 1238 | ExecFlags flags, |
81a2b7ce LP |
1239 | pid_t *_pid) { |
1240 | ||
9fa95f85 | 1241 | ExecParameters exec_params = { |
c39f1ce2 LP |
1242 | .flags = flags, |
1243 | .stdin_fd = -1, | |
1244 | .stdout_fd = -1, | |
1245 | .stderr_fd = -1, | |
9fa95f85 | 1246 | }; |
3c7416b6 LP |
1247 | _cleanup_strv_free_ char **final_env = NULL, **our_env = NULL, **fd_names = NULL; |
1248 | unsigned n_storage_fds = 0, n_socket_fds = 0, n_env = 0; | |
1249 | _cleanup_free_ int *fds = NULL; | |
1250 | pid_t pid; | |
8dd4c05b LP |
1251 | int r; |
1252 | ||
034c6ed7 LP |
1253 | assert(s); |
1254 | assert(c); | |
1255 | assert(_pid); | |
1256 | ||
3c7416b6 LP |
1257 | r = unit_prepare_exec(UNIT(s)); |
1258 | if (r < 0) | |
1259 | return r; | |
1260 | ||
9c1a61ad LP |
1261 | if (flags & EXEC_IS_CONTROL) { |
1262 | /* If this is a control process, mask the permissions/chroot application if this is requested. */ | |
1263 | if (s->permissions_start_only) | |
1703fa41 | 1264 | exec_params.flags &= ~EXEC_APPLY_SANDBOXING; |
9c1a61ad LP |
1265 | if (s->root_directory_start_only) |
1266 | exec_params.flags &= ~EXEC_APPLY_CHROOT; | |
1267 | } | |
1268 | ||
c39f1ce2 | 1269 | if ((flags & EXEC_PASS_FDS) || |
6cf6bbc2 LP |
1270 | s->exec_context.std_input == EXEC_INPUT_SOCKET || |
1271 | s->exec_context.std_output == EXEC_OUTPUT_SOCKET || | |
1272 | s->exec_context.std_error == EXEC_OUTPUT_SOCKET) { | |
1273 | ||
4c47affc | 1274 | r = service_collect_fds(s, &fds, &fd_names, &n_storage_fds, &n_socket_fds); |
8dd4c05b | 1275 | if (r < 0) |
36c16a7c | 1276 | return r; |
6cf6bbc2 | 1277 | |
4c47affc | 1278 | log_unit_debug(UNIT(s), "Passing %i fds to service", n_storage_fds + n_socket_fds); |
4f2d528d | 1279 | } |
44d8db9e | 1280 | |
36c16a7c LP |
1281 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), timeout)); |
1282 | if (r < 0) | |
1283 | return r; | |
034c6ed7 | 1284 | |
136dc4c4 | 1285 | our_env = new0(char*, 9); |
36c16a7c LP |
1286 | if (!our_env) |
1287 | return -ENOMEM; | |
c952c6ec | 1288 | |
6375bd20 | 1289 | if (service_exec_needs_notify_socket(s, flags)) |
36c16a7c LP |
1290 | if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) |
1291 | return -ENOMEM; | |
c952c6ec | 1292 | |
2105e76a | 1293 | if (s->main_pid > 0) |
36c16a7c LP |
1294 | if (asprintf(our_env + n_env++, "MAINPID="PID_FMT, s->main_pid) < 0) |
1295 | return -ENOMEM; | |
2105e76a | 1296 | |
c39f1ce2 | 1297 | if (MANAGER_IS_USER(UNIT(s)->manager)) |
df0ff127 | 1298 | if (asprintf(our_env + n_env++, "MANAGERPID="PID_FMT, getpid_cached()) < 0) |
36c16a7c | 1299 | return -ENOMEM; |
97ae63e2 | 1300 | |
8dd4c05b | 1301 | if (s->socket_fd >= 0) { |
3b1c5241 SL |
1302 | union sockaddr_union sa; |
1303 | socklen_t salen = sizeof(sa); | |
1304 | ||
f56e7bfe LP |
1305 | /* If this is a per-connection service instance, let's set $REMOTE_ADDR and $REMOTE_PORT to something |
1306 | * useful. Note that we do this only when we are still connected at this point in time, which we might | |
1307 | * very well not be. Hence we ignore all errors when retrieving peer information (as that might result | |
1308 | * in ENOTCONN), and just use whate we can use. */ | |
f2dbd059 | 1309 | |
f56e7bfe LP |
1310 | if (getpeername(s->socket_fd, &sa.sa, &salen) >= 0 && |
1311 | IN_SET(sa.sa.sa_family, AF_INET, AF_INET6, AF_VSOCK)) { | |
3b1c5241 | 1312 | |
3b1c5241 SL |
1313 | _cleanup_free_ char *addr = NULL; |
1314 | char *t; | |
882ac6e7 | 1315 | unsigned port; |
3b1c5241 SL |
1316 | |
1317 | r = sockaddr_pretty(&sa.sa, salen, true, false, &addr); | |
1318 | if (r < 0) | |
36c16a7c | 1319 | return r; |
3b1c5241 SL |
1320 | |
1321 | t = strappend("REMOTE_ADDR=", addr); | |
36c16a7c LP |
1322 | if (!t) |
1323 | return -ENOMEM; | |
3b1c5241 SL |
1324 | our_env[n_env++] = t; |
1325 | ||
882ac6e7 SH |
1326 | r = sockaddr_port(&sa.sa, &port); |
1327 | if (r < 0) | |
1328 | return r; | |
3b1c5241 | 1329 | |
36c16a7c LP |
1330 | if (asprintf(&t, "REMOTE_PORT=%u", port) < 0) |
1331 | return -ENOMEM; | |
3b1c5241 SL |
1332 | our_env[n_env++] = t; |
1333 | } | |
1334 | } | |
1335 | ||
136dc4c4 LP |
1336 | if (flags & EXEC_SETENV_RESULT) { |
1337 | if (asprintf(our_env + n_env++, "SERVICE_RESULT=%s", service_result_to_string(s->result)) < 0) | |
1338 | return -ENOMEM; | |
1339 | ||
1340 | if (s->main_exec_status.pid > 0 && | |
1341 | dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) { | |
1342 | if (asprintf(our_env + n_env++, "EXIT_CODE=%s", sigchld_code_to_string(s->main_exec_status.code)) < 0) | |
1343 | return -ENOMEM; | |
1344 | ||
1345 | if (s->main_exec_status.code == CLD_EXITED) | |
1346 | r = asprintf(our_env + n_env++, "EXIT_STATUS=%i", s->main_exec_status.status); | |
1347 | else | |
1348 | r = asprintf(our_env + n_env++, "EXIT_STATUS=%s", signal_to_string(s->main_exec_status.status)); | |
1349 | if (r < 0) | |
1350 | return -ENOMEM; | |
1351 | } | |
1352 | } | |
1353 | ||
19bbdd98 | 1354 | manager_set_exec_params(UNIT(s)->manager, &exec_params); |
f0d47797 | 1355 | unit_set_exec_params(UNIT(s), &exec_params); |
3536f49e YW |
1356 | |
1357 | final_env = strv_env_merge(2, exec_params.environment, our_env, NULL); | |
36c16a7c LP |
1358 | if (!final_env) |
1359 | return -ENOMEM; | |
c952c6ec | 1360 | |
5bf7569c LP |
1361 | /* System services should get a new keyring by default. */ |
1362 | SET_FLAG(exec_params.flags, EXEC_NEW_KEYRING, MANAGER_IS_SYSTEM(UNIT(s)->manager)); | |
ac647978 LP |
1363 | |
1364 | /* System D-Bus needs nss-systemd disabled, so that we don't deadlock */ | |
1365 | SET_FLAG(exec_params.flags, EXEC_NSS_BYPASS_BUS, | |
1366 | MANAGER_IS_SYSTEM(UNIT(s)->manager) && unit_has_name(UNIT(s), SPECIAL_DBUS_SERVICE)); | |
4ad49000 | 1367 | |
5125e762 | 1368 | exec_params.argv = c->argv; |
c39f1ce2 | 1369 | exec_params.environment = final_env; |
9fa95f85 | 1370 | exec_params.fds = fds; |
8dd4c05b | 1371 | exec_params.fd_names = fd_names; |
4c47affc | 1372 | exec_params.n_storage_fds = n_storage_fds; |
9b141911 | 1373 | exec_params.n_socket_fds = n_socket_fds; |
9fa95f85 | 1374 | exec_params.watchdog_usec = s->watchdog_usec; |
a34ceba6 | 1375 | exec_params.selinux_context_net = s->socket_fd_selinux_context_net; |
9fa95f85 DM |
1376 | if (s->type == SERVICE_IDLE) |
1377 | exec_params.idle_pipe = UNIT(s)->manager->idle_pipe; | |
a34ceba6 LP |
1378 | exec_params.stdin_fd = s->stdin_fd; |
1379 | exec_params.stdout_fd = s->stdout_fd; | |
1380 | exec_params.stderr_fd = s->stderr_fd; | |
9fa95f85 | 1381 | |
f2341e0a LP |
1382 | r = exec_spawn(UNIT(s), |
1383 | c, | |
9e2f7c11 | 1384 | &s->exec_context, |
9fa95f85 | 1385 | &exec_params, |
613b411c | 1386 | s->exec_runtime, |
29206d46 | 1387 | &s->dynamic_creds, |
9e2f7c11 | 1388 | &pid); |
9e2f7c11 | 1389 | if (r < 0) |
36c16a7c | 1390 | return r; |
034c6ed7 | 1391 | |
117dcc57 | 1392 | r = unit_watch_pid(UNIT(s), pid); |
e8b509d3 | 1393 | if (r < 0) /* FIXME: we need to do something here */ |
36c16a7c | 1394 | return r; |
034c6ed7 LP |
1395 | |
1396 | *_pid = pid; | |
1397 | ||
5cb5a6ff | 1398 | return 0; |
034c6ed7 LP |
1399 | } |
1400 | ||
80876c20 LP |
1401 | static int main_pid_good(Service *s) { |
1402 | assert(s); | |
1403 | ||
51894d70 | 1404 | /* Returns 0 if the pid is dead, > 0 if it is good, < 0 if we don't know */ |
80876c20 | 1405 | |
fc08079e | 1406 | /* If we know the pid file, then let's just check if it is |
80876c20 | 1407 | * still valid */ |
6dfa5494 LP |
1408 | if (s->main_pid_known) { |
1409 | ||
1410 | /* If it's an alien child let's check if it is still | |
1411 | * alive ... */ | |
62220cf7 | 1412 | if (s->main_pid_alien && s->main_pid > 0) |
9f5650ae | 1413 | return pid_is_alive(s->main_pid); |
6dfa5494 LP |
1414 | |
1415 | /* .. otherwise assume we'll get a SIGCHLD for it, | |
1416 | * which we really should wait for to collect exit | |
1417 | * status and code */ | |
80876c20 | 1418 | return s->main_pid > 0; |
6dfa5494 | 1419 | } |
80876c20 LP |
1420 | |
1421 | /* We don't know the pid */ | |
1422 | return -EAGAIN; | |
1423 | } | |
1424 | ||
019be286 | 1425 | static int control_pid_good(Service *s) { |
80876c20 LP |
1426 | assert(s); |
1427 | ||
07697d7e LP |
1428 | /* Returns 0 if the control PID is dead, > 0 if it is good. We never actually return < 0 here, but in order to |
1429 | * make this function as similar as possible to main_pid_good() and cgroup_good(), we pretend that < 0 also | |
1430 | * means: we can't figure it out. */ | |
1431 | ||
80876c20 LP |
1432 | return s->control_pid > 0; |
1433 | } | |
1434 | ||
1435 | static int cgroup_good(Service *s) { | |
1436 | int r; | |
1437 | ||
1438 | assert(s); | |
1439 | ||
07697d7e LP |
1440 | /* Returns 0 if the cgroup is empty or doesn't exist, > 0 if it is exists and is populated, < 0 if we can't |
1441 | * figure it out */ | |
1442 | ||
4ad49000 LP |
1443 | if (!UNIT(s)->cgroup_path) |
1444 | return 0; | |
1445 | ||
6f883237 | 1446 | r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, UNIT(s)->cgroup_path); |
117dcc57 | 1447 | if (r < 0) |
80876c20 LP |
1448 | return r; |
1449 | ||
b13ddbbc | 1450 | return r == 0; |
80876c20 LP |
1451 | } |
1452 | ||
a509f0e6 LP |
1453 | static bool service_shall_restart(Service *s) { |
1454 | assert(s); | |
1455 | ||
1456 | /* Don't restart after manual stops */ | |
1457 | if (s->forbid_restart) | |
1458 | return false; | |
1459 | ||
1460 | /* Never restart if this is configured as special exception */ | |
1461 | if (exit_status_set_test(&s->restart_prevent_status, s->main_exec_status.code, s->main_exec_status.status)) | |
1462 | return false; | |
1463 | ||
1464 | /* Restart if the exit code/status are configured as restart triggers */ | |
1465 | if (exit_status_set_test(&s->restart_force_status, s->main_exec_status.code, s->main_exec_status.status)) | |
1466 | return true; | |
1467 | ||
1468 | switch (s->restart) { | |
1469 | ||
1470 | case SERVICE_RESTART_NO: | |
1471 | return false; | |
1472 | ||
1473 | case SERVICE_RESTART_ALWAYS: | |
1474 | return true; | |
1475 | ||
1476 | case SERVICE_RESTART_ON_SUCCESS: | |
1477 | return s->result == SERVICE_SUCCESS; | |
1478 | ||
1479 | case SERVICE_RESTART_ON_FAILURE: | |
1480 | return s->result != SERVICE_SUCCESS; | |
1481 | ||
1482 | case SERVICE_RESTART_ON_ABNORMAL: | |
1483 | return !IN_SET(s->result, SERVICE_SUCCESS, SERVICE_FAILURE_EXIT_CODE); | |
1484 | ||
1485 | case SERVICE_RESTART_ON_WATCHDOG: | |
1486 | return s->result == SERVICE_FAILURE_WATCHDOG; | |
1487 | ||
1488 | case SERVICE_RESTART_ON_ABORT: | |
1489 | return IN_SET(s->result, SERVICE_FAILURE_SIGNAL, SERVICE_FAILURE_CORE_DUMP); | |
1490 | ||
1491 | default: | |
1492 | assert_not_reached("unknown restart setting"); | |
1493 | } | |
1494 | } | |
1495 | ||
53f47dfc YW |
1496 | static bool service_will_restart(Service *s) { |
1497 | assert(s); | |
1498 | ||
1499 | if (s->state == SERVICE_AUTO_RESTART) | |
1500 | return true; | |
1501 | if (!UNIT(s)->job) | |
1502 | return false; | |
1503 | if (UNIT(s)->job->type == JOB_START) | |
1504 | return true; | |
1505 | return false; | |
1506 | } | |
1507 | ||
f42806df | 1508 | static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) { |
034c6ed7 | 1509 | int r; |
0f52f8e5 | 1510 | |
034c6ed7 LP |
1511 | assert(s); |
1512 | ||
0f52f8e5 LP |
1513 | /* If there's a stop job queued before we enter the DEAD state, we shouldn't act on Restart=, in order to not |
1514 | * undo what has already been enqueued. */ | |
1515 | if (unit_stop_pending(UNIT(s))) | |
1516 | allow_restart = false; | |
1517 | ||
a0fef983 | 1518 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1519 | s->result = f; |
034c6ed7 | 1520 | |
ed77d407 LP |
1521 | if (s->result != SERVICE_SUCCESS) |
1522 | log_unit_warning(UNIT(s), "Failed with result '%s'.", service_result_to_string(s->result)); | |
1523 | ||
7eb2a8a1 LP |
1524 | /* Make sure service_release_resources() doesn't destroy our FD store, while we are changing through |
1525 | * SERVICE_FAILED/SERVICE_DEAD before entering into SERVICE_AUTO_RESTART. */ | |
1526 | s->n_keep_fd_store ++; | |
1527 | ||
0c7f15b3 MS |
1528 | service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD); |
1529 | ||
a509f0e6 | 1530 | if (allow_restart && service_shall_restart(s)) { |
034c6ed7 | 1531 | |
36c16a7c | 1532 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->restart_usec)); |
7eb2a8a1 LP |
1533 | if (r < 0) { |
1534 | s->n_keep_fd_store--; | |
034c6ed7 | 1535 | goto fail; |
7eb2a8a1 | 1536 | } |
034c6ed7 LP |
1537 | |
1538 | service_set_state(s, SERVICE_AUTO_RESTART); | |
7a0019d3 LP |
1539 | } else |
1540 | /* If we shan't restart, then flush out the restart counter. But don't do that immediately, so that the | |
1541 | * user can still introspect the counter. Do so on the next start. */ | |
1542 | s->flush_n_restarts = true; | |
034c6ed7 | 1543 | |
7eb2a8a1 LP |
1544 | /* The new state is in effect, let's decrease the fd store ref counter again. Let's also readd us to the GC |
1545 | * queue, so that the fd store is possibly gc'ed again */ | |
1546 | s->n_keep_fd_store--; | |
1547 | unit_add_to_gc_queue(UNIT(s)); | |
1548 | ||
f2341e0a | 1549 | /* The next restart might not be a manual stop, hence reset the flag indicating manual stops */ |
47342320 LP |
1550 | s->forbid_restart = false; |
1551 | ||
e66cf1a3 | 1552 | /* We want fresh tmpdirs in case service is started again immediately */ |
613b411c LP |
1553 | exec_runtime_destroy(s->exec_runtime); |
1554 | s->exec_runtime = exec_runtime_unref(s->exec_runtime); | |
c17ec25e | 1555 | |
53f47dfc YW |
1556 | if (s->exec_context.runtime_directory_preserve_mode == EXEC_PRESERVE_NO || |
1557 | (s->exec_context.runtime_directory_preserve_mode == EXEC_PRESERVE_RESTART && !service_will_restart(s))) | |
1558 | /* Also, remove the runtime directory */ | |
3536f49e | 1559 | exec_context_destroy_runtime_directory(&s->exec_context, UNIT(s)->manager->prefix[EXEC_DIRECTORY_RUNTIME]); |
e66cf1a3 | 1560 | |
00d9ef85 LP |
1561 | /* Get rid of the IPC bits of the user */ |
1562 | unit_unref_uid_gid(UNIT(s), true); | |
1563 | ||
29206d46 LP |
1564 | /* Release the user, and destroy it if we are the only remaining owner */ |
1565 | dynamic_creds_destroy(&s->dynamic_creds); | |
1566 | ||
9285c9ff LN |
1567 | /* Try to delete the pid file. At this point it will be |
1568 | * out-of-date, and some software might be confused by it, so | |
1569 | * let's remove it. */ | |
1570 | if (s->pid_file) | |
fabab190 | 1571 | (void) unlink(s->pid_file); |
9285c9ff | 1572 | |
034c6ed7 LP |
1573 | return; |
1574 | ||
1575 | fail: | |
f2341e0a | 1576 | log_unit_warning_errno(UNIT(s), r, "Failed to run install restart timer: %m"); |
f42806df | 1577 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); |
034c6ed7 LP |
1578 | } |
1579 | ||
f42806df | 1580 | static void service_enter_stop_post(Service *s, ServiceResult f) { |
034c6ed7 LP |
1581 | int r; |
1582 | assert(s); | |
1583 | ||
a0fef983 | 1584 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1585 | s->result = f; |
034c6ed7 | 1586 | |
5e94833f | 1587 | service_unwatch_control_pid(s); |
a911bb9a | 1588 | unit_watch_all_pids(UNIT(s)); |
5e94833f | 1589 | |
117dcc57 ZJS |
1590 | s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST]; |
1591 | if (s->control_command) { | |
867b3b7d LP |
1592 | s->control_command_id = SERVICE_EXEC_STOP_POST; |
1593 | ||
ecedd90f LP |
1594 | r = service_spawn(s, |
1595 | s->control_command, | |
21b2ce39 | 1596 | s->timeout_stop_usec, |
1703fa41 | 1597 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_IS_CONTROL|EXEC_SETENV_RESULT, |
ecedd90f LP |
1598 | &s->control_pid); |
1599 | if (r < 0) | |
034c6ed7 LP |
1600 | goto fail; |
1601 | ||
80876c20 LP |
1602 | service_set_state(s, SERVICE_STOP_POST); |
1603 | } else | |
ac84d1fb | 1604 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
1605 | |
1606 | return; | |
1607 | ||
1608 | fail: | |
f2341e0a | 1609 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop-post' task: %m"); |
f42806df | 1610 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1611 | } |
1612 | ||
4940c0b0 LP |
1613 | static int state_to_kill_operation(ServiceState state) { |
1614 | switch (state) { | |
1615 | ||
1616 | case SERVICE_STOP_SIGABRT: | |
1617 | return KILL_ABORT; | |
1618 | ||
1619 | case SERVICE_STOP_SIGTERM: | |
1620 | case SERVICE_FINAL_SIGTERM: | |
1621 | return KILL_TERMINATE; | |
1622 | ||
1623 | case SERVICE_STOP_SIGKILL: | |
1624 | case SERVICE_FINAL_SIGKILL: | |
1625 | return KILL_KILL; | |
1626 | ||
1627 | default: | |
1628 | return _KILL_OPERATION_INVALID; | |
1629 | } | |
1630 | } | |
1631 | ||
f42806df | 1632 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) { |
034c6ed7 | 1633 | int r; |
034c6ed7 LP |
1634 | |
1635 | assert(s); | |
1636 | ||
a0fef983 | 1637 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1638 | s->result = f; |
034c6ed7 | 1639 | |
a911bb9a LP |
1640 | unit_watch_all_pids(UNIT(s)); |
1641 | ||
cd2086fe LP |
1642 | r = unit_kill_context( |
1643 | UNIT(s), | |
1644 | &s->kill_context, | |
4940c0b0 | 1645 | state_to_kill_operation(state), |
cd2086fe LP |
1646 | s->main_pid, |
1647 | s->control_pid, | |
1648 | s->main_pid_alien); | |
1649 | if (r < 0) | |
1650 | goto fail; | |
034c6ed7 | 1651 | |
cd2086fe | 1652 | if (r > 0) { |
36c16a7c LP |
1653 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_stop_usec)); |
1654 | if (r < 0) | |
1655 | goto fail; | |
d6ea93e3 | 1656 | |
80876c20 | 1657 | service_set_state(s, state); |
1db0db4b | 1658 | } else if (IN_SET(state, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM) && s->kill_context.send_sigkill) |
ac84d1fb | 1659 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_SUCCESS); |
1db0db4b | 1660 | else if (IN_SET(state, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 1661 | service_enter_stop_post(s, SERVICE_SUCCESS); |
1db0db4b | 1662 | else if (state == SERVICE_FINAL_SIGTERM && s->kill_context.send_sigkill) |
ac84d1fb | 1663 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_SUCCESS); |
80876c20 | 1664 | else |
f42806df | 1665 | service_enter_dead(s, SERVICE_SUCCESS, true); |
034c6ed7 LP |
1666 | |
1667 | return; | |
1668 | ||
1669 | fail: | |
f2341e0a | 1670 | log_unit_warning_errno(UNIT(s), r, "Failed to kill processes: %m"); |
034c6ed7 | 1671 | |
a00973af | 1672 | if (IN_SET(state, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 1673 | service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES); |
034c6ed7 | 1674 | else |
f42806df | 1675 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
034c6ed7 LP |
1676 | } |
1677 | ||
308d72dc LP |
1678 | static void service_enter_stop_by_notify(Service *s) { |
1679 | assert(s); | |
1680 | ||
1681 | unit_watch_all_pids(UNIT(s)); | |
1682 | ||
36c16a7c | 1683 | service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_stop_usec)); |
308d72dc | 1684 | |
6041a7ee MS |
1685 | /* The service told us it's stopping, so it's as if we SIGTERM'd it. */ |
1686 | service_set_state(s, SERVICE_STOP_SIGTERM); | |
308d72dc LP |
1687 | } |
1688 | ||
f42806df | 1689 | static void service_enter_stop(Service *s, ServiceResult f) { |
034c6ed7 | 1690 | int r; |
5925dd3c | 1691 | |
034c6ed7 LP |
1692 | assert(s); |
1693 | ||
a0fef983 | 1694 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1695 | s->result = f; |
034c6ed7 | 1696 | |
5e94833f | 1697 | service_unwatch_control_pid(s); |
a911bb9a | 1698 | unit_watch_all_pids(UNIT(s)); |
5e94833f | 1699 | |
117dcc57 ZJS |
1700 | s->control_command = s->exec_command[SERVICE_EXEC_STOP]; |
1701 | if (s->control_command) { | |
867b3b7d LP |
1702 | s->control_command_id = SERVICE_EXEC_STOP; |
1703 | ||
ecedd90f LP |
1704 | r = service_spawn(s, |
1705 | s->control_command, | |
21b2ce39 | 1706 | s->timeout_stop_usec, |
1703fa41 | 1707 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_SETENV_RESULT, |
ecedd90f LP |
1708 | &s->control_pid); |
1709 | if (r < 0) | |
034c6ed7 LP |
1710 | goto fail; |
1711 | ||
80876c20 LP |
1712 | service_set_state(s, SERVICE_STOP); |
1713 | } else | |
f42806df | 1714 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
1715 | |
1716 | return; | |
1717 | ||
1718 | fail: | |
f2341e0a | 1719 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop' task: %m"); |
f42806df | 1720 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1721 | } |
1722 | ||
957c3cf9 LP |
1723 | static bool service_good(Service *s) { |
1724 | int main_pid_ok; | |
1725 | assert(s); | |
1726 | ||
1727 | if (s->type == SERVICE_DBUS && !s->bus_name_good) | |
1728 | return false; | |
1729 | ||
1730 | main_pid_ok = main_pid_good(s); | |
1731 | if (main_pid_ok > 0) /* It's alive */ | |
1732 | return true; | |
1733 | if (main_pid_ok == 0) /* It's dead */ | |
1734 | return false; | |
1735 | ||
1736 | /* OK, we don't know anything about the main PID, maybe | |
1737 | * because there is none. Let's check the control group | |
1738 | * instead. */ | |
1739 | ||
1740 | return cgroup_good(s) != 0; | |
1741 | } | |
1742 | ||
f42806df | 1743 | static void service_enter_running(Service *s, ServiceResult f) { |
80876c20 LP |
1744 | assert(s); |
1745 | ||
a0fef983 | 1746 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1747 | s->result = f; |
80876c20 | 1748 | |
089b64d5 LP |
1749 | service_unwatch_control_pid(s); |
1750 | ||
957c3cf9 | 1751 | if (service_good(s)) { |
308d72dc LP |
1752 | |
1753 | /* If there are any queued up sd_notify() | |
1754 | * notifications, process them now */ | |
1755 | if (s->notify_state == NOTIFY_RELOADING) | |
1756 | service_enter_reload_by_notify(s); | |
1757 | else if (s->notify_state == NOTIFY_STOPPING) | |
1758 | service_enter_stop_by_notify(s); | |
36c16a7c | 1759 | else { |
308d72dc | 1760 | service_set_state(s, SERVICE_RUNNING); |
36c16a7c LP |
1761 | service_arm_timer(s, usec_add(UNIT(s)->active_enter_timestamp.monotonic, s->runtime_max_usec)); |
1762 | } | |
308d72dc | 1763 | |
3d474ef7 | 1764 | } else if (f != SERVICE_SUCCESS) |
c3fda31d | 1765 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
3d474ef7 | 1766 | else if (s->remain_after_exit) |
80876c20 LP |
1767 | service_set_state(s, SERVICE_EXITED); |
1768 | else | |
f42806df | 1769 | service_enter_stop(s, SERVICE_SUCCESS); |
80876c20 LP |
1770 | } |
1771 | ||
034c6ed7 LP |
1772 | static void service_enter_start_post(Service *s) { |
1773 | int r; | |
1774 | assert(s); | |
1775 | ||
5e94833f | 1776 | service_unwatch_control_pid(s); |
842129f5 | 1777 | service_reset_watchdog(s); |
bb242b7b | 1778 | |
117dcc57 ZJS |
1779 | s->control_command = s->exec_command[SERVICE_EXEC_START_POST]; |
1780 | if (s->control_command) { | |
867b3b7d LP |
1781 | s->control_command_id = SERVICE_EXEC_START_POST; |
1782 | ||
ecedd90f LP |
1783 | r = service_spawn(s, |
1784 | s->control_command, | |
21b2ce39 | 1785 | s->timeout_start_usec, |
1703fa41 | 1786 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL, |
ecedd90f LP |
1787 | &s->control_pid); |
1788 | if (r < 0) | |
034c6ed7 LP |
1789 | goto fail; |
1790 | ||
80876c20 LP |
1791 | service_set_state(s, SERVICE_START_POST); |
1792 | } else | |
f42806df | 1793 | service_enter_running(s, SERVICE_SUCCESS); |
034c6ed7 LP |
1794 | |
1795 | return; | |
1796 | ||
1797 | fail: | |
f2341e0a | 1798 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-post' task: %m"); |
f42806df | 1799 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1800 | } |
1801 | ||
e9a4f676 | 1802 | static void service_kill_control_process(Service *s) { |
a6951a50 | 1803 | int r; |
4ad49000 | 1804 | |
a6951a50 LP |
1805 | assert(s); |
1806 | ||
e9a4f676 LP |
1807 | if (s->control_pid <= 0) |
1808 | return; | |
4ad49000 | 1809 | |
e9a4f676 LP |
1810 | r = kill_and_sigcont(s->control_pid, SIGKILL); |
1811 | if (r < 0) { | |
1812 | _cleanup_free_ char *comm = NULL; | |
a6951a50 | 1813 | |
e9a4f676 | 1814 | (void) get_process_comm(s->control_pid, &comm); |
a6951a50 | 1815 | |
e9a4f676 LP |
1816 | log_unit_debug_errno(UNIT(s), r, "Failed to kill control process " PID_FMT " (%s), ignoring: %m", |
1817 | s->control_pid, strna(comm)); | |
a6951a50 | 1818 | } |
4ad49000 LP |
1819 | } |
1820 | ||
034c6ed7 | 1821 | static void service_enter_start(Service *s) { |
4ad49000 | 1822 | ExecCommand *c; |
36c16a7c | 1823 | usec_t timeout; |
034c6ed7 LP |
1824 | pid_t pid; |
1825 | int r; | |
1826 | ||
1827 | assert(s); | |
1828 | ||
41efeaec LP |
1829 | service_unwatch_control_pid(s); |
1830 | service_unwatch_main_pid(s); | |
80876c20 | 1831 | |
a4634b21 LP |
1832 | unit_warn_leftover_processes(UNIT(s)); |
1833 | ||
867b3b7d LP |
1834 | if (s->type == SERVICE_FORKING) { |
1835 | s->control_command_id = SERVICE_EXEC_START; | |
1836 | c = s->control_command = s->exec_command[SERVICE_EXEC_START]; | |
1837 | ||
1838 | s->main_command = NULL; | |
1839 | } else { | |
1840 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
1841 | s->control_command = NULL; | |
1842 | ||
1843 | c = s->main_command = s->exec_command[SERVICE_EXEC_START]; | |
1844 | } | |
34e9ba66 | 1845 | |
96fb8242 | 1846 | if (!c) { |
47fffb35 LP |
1847 | if (s->type != SERVICE_ONESHOT) { |
1848 | /* There's no command line configured for the main command? Hmm, that is strange. This can only | |
1849 | * happen if the configuration changes at runtime. In this case, let's enter a failure | |
1850 | * state. */ | |
1851 | log_unit_error(UNIT(s), "There's no 'start' task anymore we could start: %m"); | |
1852 | r = -ENXIO; | |
1853 | goto fail; | |
1854 | } | |
1855 | ||
96fb8242 LP |
1856 | service_enter_start_post(s); |
1857 | return; | |
1858 | } | |
1859 | ||
36c16a7c LP |
1860 | if (IN_SET(s->type, SERVICE_SIMPLE, SERVICE_IDLE)) |
1861 | /* For simple + idle this is the main process. We don't apply any timeout here, but | |
1862 | * service_enter_running() will later apply the .runtime_max_usec timeout. */ | |
1863 | timeout = USEC_INFINITY; | |
1864 | else | |
1865 | timeout = s->timeout_start_usec; | |
1866 | ||
ecedd90f LP |
1867 | r = service_spawn(s, |
1868 | c, | |
36c16a7c | 1869 | timeout, |
1703fa41 | 1870 | EXEC_PASS_FDS|EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_SET_WATCHDOG, |
ecedd90f LP |
1871 | &pid); |
1872 | if (r < 0) | |
034c6ed7 LP |
1873 | goto fail; |
1874 | ||
36c16a7c | 1875 | if (IN_SET(s->type, SERVICE_SIMPLE, SERVICE_IDLE)) { |
034c6ed7 LP |
1876 | /* For simple services we immediately start |
1877 | * the START_POST binaries. */ | |
1878 | ||
5925dd3c | 1879 | service_set_main_pid(s, pid); |
034c6ed7 LP |
1880 | service_enter_start_post(s); |
1881 | ||
1882 | } else if (s->type == SERVICE_FORKING) { | |
1883 | ||
1884 | /* For forking services we wait until the start | |
1885 | * process exited. */ | |
1886 | ||
e55224ca | 1887 | s->control_pid = pid; |
80876c20 LP |
1888 | service_set_state(s, SERVICE_START); |
1889 | ||
36c16a7c | 1890 | } else if (IN_SET(s->type, SERVICE_ONESHOT, SERVICE_DBUS, SERVICE_NOTIFY)) { |
7d55e835 | 1891 | |
34e9ba66 | 1892 | /* For oneshot services we wait until the start |
7d55e835 LP |
1893 | * process exited, too, but it is our main process. */ |
1894 | ||
05e343b7 | 1895 | /* For D-Bus services we know the main pid right away, |
8c47c732 LP |
1896 | * but wait for the bus name to appear on the |
1897 | * bus. Notify services are similar. */ | |
05e343b7 | 1898 | |
5925dd3c | 1899 | service_set_main_pid(s, pid); |
80876c20 | 1900 | service_set_state(s, SERVICE_START); |
034c6ed7 LP |
1901 | } else |
1902 | assert_not_reached("Unknown service type"); | |
1903 | ||
1904 | return; | |
1905 | ||
1906 | fail: | |
f2341e0a | 1907 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start' task: %m"); |
c3fda31d | 1908 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1909 | } |
1910 | ||
1911 | static void service_enter_start_pre(Service *s) { | |
1912 | int r; | |
1913 | ||
1914 | assert(s); | |
1915 | ||
5e94833f LP |
1916 | service_unwatch_control_pid(s); |
1917 | ||
117dcc57 ZJS |
1918 | s->control_command = s->exec_command[SERVICE_EXEC_START_PRE]; |
1919 | if (s->control_command) { | |
8f53a7b8 | 1920 | |
a4634b21 LP |
1921 | unit_warn_leftover_processes(UNIT(s)); |
1922 | ||
867b3b7d LP |
1923 | s->control_command_id = SERVICE_EXEC_START_PRE; |
1924 | ||
ecedd90f LP |
1925 | r = service_spawn(s, |
1926 | s->control_command, | |
21b2ce39 | 1927 | s->timeout_start_usec, |
1703fa41 | 1928 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_APPLY_TTY_STDIN, |
ecedd90f LP |
1929 | &s->control_pid); |
1930 | if (r < 0) | |
034c6ed7 LP |
1931 | goto fail; |
1932 | ||
80876c20 LP |
1933 | service_set_state(s, SERVICE_START_PRE); |
1934 | } else | |
034c6ed7 LP |
1935 | service_enter_start(s); |
1936 | ||
1937 | return; | |
1938 | ||
1939 | fail: | |
f2341e0a | 1940 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-pre' task: %m"); |
f42806df | 1941 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
034c6ed7 LP |
1942 | } |
1943 | ||
1944 | static void service_enter_restart(Service *s) { | |
4afd3348 | 1945 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
034c6ed7 | 1946 | int r; |
398ef8ba | 1947 | |
034c6ed7 LP |
1948 | assert(s); |
1949 | ||
a8bb2e65 LP |
1950 | if (UNIT(s)->job && UNIT(s)->job->type == JOB_STOP) { |
1951 | /* Don't restart things if we are going down anyway */ | |
f2341e0a | 1952 | log_unit_info(UNIT(s), "Stop job pending for unit, delaying automatic restart."); |
2edfa366 | 1953 | |
36c16a7c | 1954 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->restart_usec)); |
a8bb2e65 | 1955 | if (r < 0) |
2edfa366 | 1956 | goto fail; |
feae8adb DW |
1957 | |
1958 | return; | |
2edfa366 LP |
1959 | } |
1960 | ||
48bb5876 DW |
1961 | /* Any units that are bound to this service must also be |
1962 | * restarted. We use JOB_RESTART (instead of the more obvious | |
1963 | * JOB_START) here so that those dependency jobs will be added | |
1964 | * as well. */ | |
4bd29fe5 | 1965 | r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_FAIL, &error, NULL); |
48bb5876 | 1966 | if (r < 0) |
034c6ed7 LP |
1967 | goto fail; |
1968 | ||
7a0019d3 LP |
1969 | /* Count the jobs we enqueue for restarting. This counter is maintained as long as the unit isn't fully |
1970 | * stopped, i.e. as long as it remains up or remains in auto-start states. The use can reset the counter | |
1971 | * explicitly however via the usual "systemctl reset-failure" logic. */ | |
1972 | s->n_restarts ++; | |
1973 | s->flush_n_restarts = false; | |
1974 | ||
1975 | log_struct(LOG_INFO, | |
1976 | "MESSAGE_ID=" SD_MESSAGE_UNIT_RESTART_SCHEDULED_STR, | |
1977 | LOG_UNIT_ID(UNIT(s)), | |
f1c50bec | 1978 | LOG_UNIT_INVOCATION_ID(UNIT(s)), |
7a0019d3 LP |
1979 | LOG_UNIT_MESSAGE(UNIT(s), "Scheduled restart job, restart counter is at %u.", s->n_restarts), |
1980 | "N_RESTARTS=%u", s->n_restarts, | |
1981 | NULL); | |
1982 | ||
1983 | /* Notify clients about changed restart counter */ | |
1984 | unit_add_to_dbus_queue(UNIT(s)); | |
1985 | ||
a8bb2e65 LP |
1986 | /* Note that we stay in the SERVICE_AUTO_RESTART state here, |
1987 | * it will be canceled as part of the service_stop() call that | |
1988 | * is executed as part of JOB_RESTART. */ | |
1989 | ||
034c6ed7 LP |
1990 | return; |
1991 | ||
1992 | fail: | |
f2341e0a | 1993 | log_unit_warning(UNIT(s), "Failed to schedule restart job: %s", bus_error_message(&error, -r)); |
f42806df | 1994 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); |
034c6ed7 LP |
1995 | } |
1996 | ||
308d72dc | 1997 | static void service_enter_reload_by_notify(Service *s) { |
15d167f8 JW |
1998 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
1999 | int r; | |
2000 | ||
308d72dc LP |
2001 | assert(s); |
2002 | ||
36c16a7c | 2003 | service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_start_usec)); |
308d72dc | 2004 | service_set_state(s, SERVICE_RELOAD); |
15d167f8 JW |
2005 | |
2006 | /* service_enter_reload_by_notify is never called during a reload, thus no loops are possible. */ | |
2007 | r = manager_propagate_reload(UNIT(s)->manager, UNIT(s), JOB_FAIL, &error); | |
2008 | if (r < 0) | |
2009 | log_unit_warning(UNIT(s), "Failed to schedule propagation of reload: %s", bus_error_message(&error, -r)); | |
308d72dc LP |
2010 | } |
2011 | ||
034c6ed7 LP |
2012 | static void service_enter_reload(Service *s) { |
2013 | int r; | |
2014 | ||
2015 | assert(s); | |
2016 | ||
5e94833f | 2017 | service_unwatch_control_pid(s); |
95c906ae | 2018 | s->reload_result = SERVICE_SUCCESS; |
5e94833f | 2019 | |
117dcc57 ZJS |
2020 | s->control_command = s->exec_command[SERVICE_EXEC_RELOAD]; |
2021 | if (s->control_command) { | |
867b3b7d LP |
2022 | s->control_command_id = SERVICE_EXEC_RELOAD; |
2023 | ||
ecedd90f LP |
2024 | r = service_spawn(s, |
2025 | s->control_command, | |
21b2ce39 | 2026 | s->timeout_start_usec, |
1703fa41 | 2027 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL, |
ecedd90f LP |
2028 | &s->control_pid); |
2029 | if (r < 0) | |
034c6ed7 LP |
2030 | goto fail; |
2031 | ||
80876c20 LP |
2032 | service_set_state(s, SERVICE_RELOAD); |
2033 | } else | |
f42806df | 2034 | service_enter_running(s, SERVICE_SUCCESS); |
034c6ed7 LP |
2035 | |
2036 | return; | |
2037 | ||
2038 | fail: | |
f2341e0a | 2039 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'reload' task: %m"); |
f42806df LP |
2040 | s->reload_result = SERVICE_FAILURE_RESOURCES; |
2041 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
2042 | } |
2043 | ||
f42806df | 2044 | static void service_run_next_control(Service *s) { |
36c16a7c | 2045 | usec_t timeout; |
034c6ed7 LP |
2046 | int r; |
2047 | ||
2048 | assert(s); | |
2049 | assert(s->control_command); | |
2050 | assert(s->control_command->command_next); | |
2051 | ||
34e9ba66 | 2052 | assert(s->control_command_id != SERVICE_EXEC_START); |
034c6ed7 | 2053 | |
34e9ba66 | 2054 | s->control_command = s->control_command->command_next; |
5e94833f LP |
2055 | service_unwatch_control_pid(s); |
2056 | ||
36c16a7c LP |
2057 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
2058 | timeout = s->timeout_start_usec; | |
2059 | else | |
2060 | timeout = s->timeout_stop_usec; | |
2061 | ||
ecedd90f LP |
2062 | r = service_spawn(s, |
2063 | s->control_command, | |
36c16a7c | 2064 | timeout, |
1703fa41 | 2065 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL| |
136dc4c4 LP |
2066 | (IN_SET(s->control_command_id, SERVICE_EXEC_START_PRE, SERVICE_EXEC_STOP_POST) ? EXEC_APPLY_TTY_STDIN : 0)| |
2067 | (IN_SET(s->control_command_id, SERVICE_EXEC_STOP, SERVICE_EXEC_STOP_POST) ? EXEC_SETENV_RESULT : 0), | |
ecedd90f LP |
2068 | &s->control_pid); |
2069 | if (r < 0) | |
034c6ed7 LP |
2070 | goto fail; |
2071 | ||
2072 | return; | |
2073 | ||
2074 | fail: | |
f2341e0a | 2075 | log_unit_warning_errno(UNIT(s), r, "Failed to run next control task: %m"); |
034c6ed7 | 2076 | |
4cd9fa81 | 2077 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START_POST, SERVICE_STOP)) |
f42806df | 2078 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 | 2079 | else if (s->state == SERVICE_STOP_POST) |
f42806df | 2080 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
e2f3b44c | 2081 | else if (s->state == SERVICE_RELOAD) { |
f42806df LP |
2082 | s->reload_result = SERVICE_FAILURE_RESOURCES; |
2083 | service_enter_running(s, SERVICE_SUCCESS); | |
e2f3b44c | 2084 | } else |
f42806df | 2085 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
5cb5a6ff LP |
2086 | } |
2087 | ||
f42806df | 2088 | static void service_run_next_main(Service *s) { |
34e9ba66 LP |
2089 | pid_t pid; |
2090 | int r; | |
2091 | ||
2092 | assert(s); | |
867b3b7d LP |
2093 | assert(s->main_command); |
2094 | assert(s->main_command->command_next); | |
2095 | assert(s->type == SERVICE_ONESHOT); | |
34e9ba66 | 2096 | |
867b3b7d | 2097 | s->main_command = s->main_command->command_next; |
34e9ba66 LP |
2098 | service_unwatch_main_pid(s); |
2099 | ||
ecedd90f LP |
2100 | r = service_spawn(s, |
2101 | s->main_command, | |
21b2ce39 | 2102 | s->timeout_start_usec, |
1703fa41 | 2103 | EXEC_PASS_FDS|EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_SET_WATCHDOG, |
ecedd90f LP |
2104 | &pid); |
2105 | if (r < 0) | |
34e9ba66 LP |
2106 | goto fail; |
2107 | ||
2108 | service_set_main_pid(s, pid); | |
2109 | ||
2110 | return; | |
2111 | ||
2112 | fail: | |
f2341e0a | 2113 | log_unit_warning_errno(UNIT(s), r, "Failed to run next main task: %m"); |
f42806df | 2114 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
34e9ba66 LP |
2115 | } |
2116 | ||
87f0e418 LP |
2117 | static int service_start(Unit *u) { |
2118 | Service *s = SERVICE(u); | |
07299350 | 2119 | int r; |
5cb5a6ff LP |
2120 | |
2121 | assert(s); | |
2122 | ||
034c6ed7 LP |
2123 | /* We cannot fulfill this request right now, try again later |
2124 | * please! */ | |
a00973af LP |
2125 | if (IN_SET(s->state, |
2126 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, | |
2127 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) | |
5cb5a6ff LP |
2128 | return -EAGAIN; |
2129 | ||
034c6ed7 | 2130 | /* Already on it! */ |
a00973af | 2131 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST)) |
034c6ed7 LP |
2132 | return 0; |
2133 | ||
2e9d6c12 | 2134 | /* A service that will be restarted must be stopped first to |
7f2cddae | 2135 | * trigger BindsTo and/or OnFailure dependencies. If a user |
2e9d6c12 | 2136 | * does not want to wait for the holdoff time to elapse, the |
d4943dc7 LP |
2137 | * service should be manually restarted, not started. We |
2138 | * simply return EAGAIN here, so that any start jobs stay | |
2139 | * queued, and assume that the auto restart timer will | |
2140 | * eventually trigger the restart. */ | |
2141 | if (s->state == SERVICE_AUTO_RESTART) | |
a8bb2e65 | 2142 | return -EAGAIN; |
2e9d6c12 | 2143 | |
a00973af | 2144 | assert(IN_SET(s->state, SERVICE_DEAD, SERVICE_FAILED)); |
5cb5a6ff | 2145 | |
07299350 LP |
2146 | /* Make sure we don't enter a busy loop of some kind. */ |
2147 | r = unit_start_limit_test(u); | |
2148 | if (r < 0) { | |
2149 | service_enter_dead(s, SERVICE_FAILURE_START_LIMIT_HIT, false); | |
2150 | return r; | |
2151 | } | |
2152 | ||
4b58153d LP |
2153 | r = unit_acquire_invocation_id(u); |
2154 | if (r < 0) | |
2155 | return r; | |
2156 | ||
f42806df LP |
2157 | s->result = SERVICE_SUCCESS; |
2158 | s->reload_result = SERVICE_SUCCESS; | |
034c6ed7 | 2159 | s->main_pid_known = false; |
6dfa5494 | 2160 | s->main_pid_alien = false; |
47342320 | 2161 | s->forbid_restart = false; |
3c7416b6 LP |
2162 | |
2163 | u->reset_accounting = true; | |
034c6ed7 | 2164 | |
a1e58e8e | 2165 | s->status_text = mfree(s->status_text); |
8cfdb077 LP |
2166 | s->status_errno = 0; |
2167 | ||
308d72dc LP |
2168 | s->notify_state = NOTIFY_UNKNOWN; |
2169 | ||
2787d83c M |
2170 | s->watchdog_override_enable = false; |
2171 | s->watchdog_override_usec = 0; | |
2172 | ||
7a0019d3 LP |
2173 | /* This is not an automatic restart? Flush the restart counter then */ |
2174 | if (s->flush_n_restarts) { | |
2175 | s->n_restarts = 0; | |
2176 | s->flush_n_restarts = false; | |
2177 | } | |
2178 | ||
034c6ed7 | 2179 | service_enter_start_pre(s); |
82a2b6bb | 2180 | return 1; |
5cb5a6ff LP |
2181 | } |
2182 | ||
87f0e418 LP |
2183 | static int service_stop(Unit *u) { |
2184 | Service *s = SERVICE(u); | |
5cb5a6ff LP |
2185 | |
2186 | assert(s); | |
2187 | ||
a509f0e6 | 2188 | /* Don't create restart jobs from manual stops. */ |
47342320 | 2189 | s->forbid_restart = true; |
034c6ed7 | 2190 | |
e537352b | 2191 | /* Already on it */ |
a00973af LP |
2192 | if (IN_SET(s->state, |
2193 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, | |
2194 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) | |
e537352b LP |
2195 | return 0; |
2196 | ||
f0c7b229 | 2197 | /* A restart will be scheduled or is in progress. */ |
034c6ed7 | 2198 | if (s->state == SERVICE_AUTO_RESTART) { |
0c7f15b3 | 2199 | service_set_state(s, SERVICE_DEAD); |
034c6ed7 LP |
2200 | return 0; |
2201 | } | |
2202 | ||
3f6c78dc LP |
2203 | /* If there's already something running we go directly into |
2204 | * kill mode. */ | |
a00973af | 2205 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RELOAD)) { |
f42806df | 2206 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
3f6c78dc LP |
2207 | return 0; |
2208 | } | |
5cb5a6ff | 2209 | |
a00973af | 2210 | assert(IN_SET(s->state, SERVICE_RUNNING, SERVICE_EXITED)); |
3a762661 | 2211 | |
f42806df | 2212 | service_enter_stop(s, SERVICE_SUCCESS); |
82a2b6bb | 2213 | return 1; |
5cb5a6ff LP |
2214 | } |
2215 | ||
87f0e418 LP |
2216 | static int service_reload(Unit *u) { |
2217 | Service *s = SERVICE(u); | |
034c6ed7 LP |
2218 | |
2219 | assert(s); | |
2220 | ||
3742095b | 2221 | assert(IN_SET(s->state, SERVICE_RUNNING, SERVICE_EXITED)); |
034c6ed7 LP |
2222 | |
2223 | service_enter_reload(s); | |
2d018ae2 | 2224 | return 1; |
5cb5a6ff LP |
2225 | } |
2226 | ||
44a6b1b6 | 2227 | _pure_ static bool service_can_reload(Unit *u) { |
87f0e418 | 2228 | Service *s = SERVICE(u); |
034c6ed7 LP |
2229 | |
2230 | assert(s); | |
2231 | ||
2232 | return !!s->exec_command[SERVICE_EXEC_RELOAD]; | |
2233 | } | |
2234 | ||
e266c068 MS |
2235 | static unsigned service_exec_command_index(Unit *u, ServiceExecCommand id, ExecCommand *current) { |
2236 | Service *s = SERVICE(u); | |
2237 | unsigned idx = 0; | |
2238 | ExecCommand *first, *c; | |
2239 | ||
2240 | assert(s); | |
2241 | ||
2242 | first = s->exec_command[id]; | |
2243 | ||
2244 | /* Figure out where we are in the list by walking back to the beginning */ | |
2245 | for (c = current; c != first; c = c->command_prev) | |
2246 | idx++; | |
2247 | ||
2248 | return idx; | |
2249 | } | |
2250 | ||
2251 | static int service_serialize_exec_command(Unit *u, FILE *f, ExecCommand *command) { | |
2252 | Service *s = SERVICE(u); | |
2253 | ServiceExecCommand id; | |
2254 | unsigned idx; | |
2255 | const char *type; | |
2256 | char **arg; | |
e266c068 MS |
2257 | _cleanup_free_ char *args = NULL, *p = NULL; |
2258 | size_t allocated = 0, length = 0; | |
2259 | ||
2260 | assert(s); | |
2261 | assert(f); | |
2262 | ||
2263 | if (!command) | |
2264 | return 0; | |
2265 | ||
2266 | if (command == s->control_command) { | |
2267 | type = "control"; | |
2268 | id = s->control_command_id; | |
2269 | } else { | |
2270 | type = "main"; | |
2271 | id = SERVICE_EXEC_START; | |
2272 | } | |
2273 | ||
2274 | idx = service_exec_command_index(u, id, command); | |
2275 | ||
2276 | STRV_FOREACH(arg, command->argv) { | |
2277 | size_t n; | |
2278 | _cleanup_free_ char *e = NULL; | |
2279 | ||
2280 | e = xescape(*arg, WHITESPACE); | |
2281 | if (!e) | |
2282 | return -ENOMEM; | |
2283 | ||
2284 | n = strlen(e); | |
2285 | if (!GREEDY_REALLOC(args, allocated, length + 1 + n + 1)) | |
2286 | return -ENOMEM; | |
2287 | ||
2288 | if (length > 0) | |
2289 | args[length++] = ' '; | |
2290 | ||
2291 | memcpy(args + length, e, n); | |
2292 | length += n; | |
2293 | } | |
2294 | ||
2295 | if (!GREEDY_REALLOC(args, allocated, length + 1)) | |
2296 | return -ENOMEM; | |
2297 | args[length++] = 0; | |
2298 | ||
2299 | p = xescape(command->path, WHITESPACE); | |
2300 | if (!p) | |
2301 | return -ENOMEM; | |
2302 | ||
2303 | fprintf(f, "%s-command=%s %u %s %s\n", type, service_exec_command_to_string(id), idx, p, args); | |
2304 | ||
2305 | return 0; | |
2306 | } | |
2307 | ||
a16e1123 LP |
2308 | static int service_serialize(Unit *u, FILE *f, FDSet *fds) { |
2309 | Service *s = SERVICE(u); | |
2339fc93 | 2310 | ServiceFDStore *fs; |
a34ceba6 | 2311 | int r; |
a16e1123 LP |
2312 | |
2313 | assert(u); | |
2314 | assert(f); | |
2315 | assert(fds); | |
2316 | ||
2317 | unit_serialize_item(u, f, "state", service_state_to_string(s->state)); | |
f42806df LP |
2318 | unit_serialize_item(u, f, "result", service_result_to_string(s->result)); |
2319 | unit_serialize_item(u, f, "reload-result", service_result_to_string(s->reload_result)); | |
a16e1123 LP |
2320 | |
2321 | if (s->control_pid > 0) | |
f06db334 | 2322 | unit_serialize_item_format(u, f, "control-pid", PID_FMT, s->control_pid); |
a16e1123 | 2323 | |
5925dd3c | 2324 | if (s->main_pid_known && s->main_pid > 0) |
ccd06097 | 2325 | unit_serialize_item_format(u, f, "main-pid", PID_FMT, s->main_pid); |
a16e1123 LP |
2326 | |
2327 | unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known)); | |
de1d4f9b | 2328 | unit_serialize_item(u, f, "bus-name-good", yes_no(s->bus_name_good)); |
d8ccf5fd | 2329 | unit_serialize_item(u, f, "bus-name-owner", s->bus_name_owner); |
a16e1123 | 2330 | |
7a0019d3 | 2331 | unit_serialize_item_format(u, f, "n-restarts", "%u", s->n_restarts); |
7f923884 | 2332 | unit_serialize_item(u, f, "flush-n-restarts", yes_no(s->flush_n_restarts)); |
7a0019d3 | 2333 | |
a34ceba6 LP |
2334 | r = unit_serialize_item_escaped(u, f, "status-text", s->status_text); |
2335 | if (r < 0) | |
2336 | return r; | |
3a2776bc | 2337 | |
e266c068 MS |
2338 | service_serialize_exec_command(u, f, s->control_command); |
2339 | service_serialize_exec_command(u, f, s->main_command); | |
a16e1123 | 2340 | |
a34ceba6 LP |
2341 | r = unit_serialize_item_fd(u, f, fds, "stdin-fd", s->stdin_fd); |
2342 | if (r < 0) | |
2343 | return r; | |
2344 | r = unit_serialize_item_fd(u, f, fds, "stdout-fd", s->stdout_fd); | |
2345 | if (r < 0) | |
2346 | return r; | |
2347 | r = unit_serialize_item_fd(u, f, fds, "stderr-fd", s->stderr_fd); | |
2348 | if (r < 0) | |
2349 | return r; | |
e44da745 | 2350 | |
9dfb64f8 ZJS |
2351 | if (UNIT_ISSET(s->accept_socket)) { |
2352 | r = unit_serialize_item(u, f, "accept-socket", UNIT_DEREF(s->accept_socket)->id); | |
2353 | if (r < 0) | |
2354 | return r; | |
2355 | } | |
2356 | ||
a34ceba6 | 2357 | r = unit_serialize_item_fd(u, f, fds, "socket-fd", s->socket_fd); |
a34ceba6 LP |
2358 | if (r < 0) |
2359 | return r; | |
e44da745 | 2360 | |
2339fc93 | 2361 | LIST_FOREACH(fd_store, fs, s->fd_store) { |
8dd4c05b | 2362 | _cleanup_free_ char *c = NULL; |
2339fc93 LP |
2363 | int copy; |
2364 | ||
2365 | copy = fdset_put_dup(fds, fs->fd); | |
2366 | if (copy < 0) | |
2367 | return copy; | |
2368 | ||
8dd4c05b LP |
2369 | c = cescape(fs->fdname); |
2370 | ||
2371 | unit_serialize_item_format(u, f, "fd-store-fd", "%i %s", copy, strempty(c)); | |
2339fc93 LP |
2372 | } |
2373 | ||
ecdbca40 | 2374 | if (s->main_exec_status.pid > 0) { |
f06db334 LP |
2375 | unit_serialize_item_format(u, f, "main-exec-status-pid", PID_FMT, s->main_exec_status.pid); |
2376 | dual_timestamp_serialize(f, "main-exec-status-start", &s->main_exec_status.start_timestamp); | |
2377 | dual_timestamp_serialize(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp); | |
ecdbca40 | 2378 | |
799fd0fd | 2379 | if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) { |
f06db334 LP |
2380 | unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code); |
2381 | unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status); | |
ecdbca40 LP |
2382 | } |
2383 | } | |
f06db334 | 2384 | |
36b693a6 | 2385 | dual_timestamp_serialize(f, "watchdog-timestamp", &s->watchdog_timestamp); |
ecdbca40 | 2386 | |
a34ceba6 | 2387 | unit_serialize_item(u, f, "forbid-restart", yes_no(s->forbid_restart)); |
6aca9a58 | 2388 | |
2787d83c M |
2389 | if (s->watchdog_override_enable) |
2390 | unit_serialize_item_format(u, f, "watchdog-override-usec", USEC_FMT, s->watchdog_override_usec); | |
2391 | ||
a16e1123 LP |
2392 | return 0; |
2393 | } | |
2394 | ||
e266c068 MS |
2395 | static int service_deserialize_exec_command(Unit *u, const char *key, const char *value) { |
2396 | Service *s = SERVICE(u); | |
2397 | int r; | |
2398 | unsigned idx = 0, i; | |
2399 | bool control, found = false; | |
2400 | ServiceExecCommand id = _SERVICE_EXEC_COMMAND_INVALID; | |
2401 | ExecCommand *command = NULL; | |
6eeec374 | 2402 | _cleanup_free_ char *path = NULL; |
e266c068 MS |
2403 | _cleanup_strv_free_ char **argv = NULL; |
2404 | ||
2405 | enum ExecCommandState { | |
2406 | STATE_EXEC_COMMAND_TYPE, | |
2407 | STATE_EXEC_COMMAND_INDEX, | |
2408 | STATE_EXEC_COMMAND_PATH, | |
2409 | STATE_EXEC_COMMAND_ARGS, | |
2410 | _STATE_EXEC_COMMAND_MAX, | |
2411 | _STATE_EXEC_COMMAND_INVALID = -1, | |
2412 | } state; | |
2413 | ||
2414 | assert(s); | |
2415 | assert(key); | |
2416 | assert(value); | |
2417 | ||
2418 | control = streq(key, "control-command"); | |
2419 | ||
2420 | state = STATE_EXEC_COMMAND_TYPE; | |
2421 | ||
2422 | for (;;) { | |
2423 | _cleanup_free_ char *arg = NULL; | |
2424 | ||
2425 | r = extract_first_word(&value, &arg, NULL, EXTRACT_CUNESCAPE); | |
2426 | if (r == 0) | |
2427 | break; | |
2428 | else if (r < 0) | |
2429 | return r; | |
2430 | ||
2431 | switch (state) { | |
2432 | case STATE_EXEC_COMMAND_TYPE: | |
2433 | id = service_exec_command_from_string(arg); | |
2434 | if (id < 0) | |
2435 | return -EINVAL; | |
2436 | ||
2437 | state = STATE_EXEC_COMMAND_INDEX; | |
2438 | break; | |
2439 | case STATE_EXEC_COMMAND_INDEX: | |
2440 | r = safe_atou(arg, &idx); | |
2441 | if (r < 0) | |
2442 | return -EINVAL; | |
2443 | ||
2444 | state = STATE_EXEC_COMMAND_PATH; | |
2445 | break; | |
2446 | case STATE_EXEC_COMMAND_PATH: | |
2447 | path = arg; | |
2448 | arg = NULL; | |
2449 | state = STATE_EXEC_COMMAND_ARGS; | |
2450 | ||
2451 | if (!path_is_absolute(path)) | |
2452 | return -EINVAL; | |
2453 | break; | |
2454 | case STATE_EXEC_COMMAND_ARGS: | |
2455 | r = strv_extend(&argv, arg); | |
2456 | if (r < 0) | |
2457 | return -ENOMEM; | |
2458 | break; | |
2459 | default: | |
2460 | assert_not_reached("Unknown error at deserialization of exec command"); | |
2461 | break; | |
2462 | } | |
2463 | } | |
2464 | ||
2465 | if (state != STATE_EXEC_COMMAND_ARGS) | |
2466 | return -EINVAL; | |
2467 | ||
2468 | /* Let's check whether exec command on given offset matches data that we just deserialized */ | |
2469 | for (command = s->exec_command[id], i = 0; command; command = command->command_next, i++) { | |
2470 | if (i != idx) | |
2471 | continue; | |
2472 | ||
2473 | found = strv_equal(argv, command->argv) && streq(command->path, path); | |
2474 | break; | |
2475 | } | |
2476 | ||
2477 | if (!found) { | |
2478 | /* Command at the index we serialized is different, let's look for command that exactly | |
2479 | * matches but is on different index. If there is no such command we will not resume execution. */ | |
2480 | for (command = s->exec_command[id]; command; command = command->command_next) | |
2481 | if (strv_equal(command->argv, argv) && streq(command->path, path)) | |
2482 | break; | |
2483 | } | |
2484 | ||
2485 | if (command && control) | |
2486 | s->control_command = command; | |
2487 | else if (command) | |
2488 | s->main_command = command; | |
2489 | else | |
2490 | log_unit_warning(u, "Current command vanished from the unit file, execution of the command list won't be resumed."); | |
2491 | ||
2492 | return 0; | |
2493 | } | |
2494 | ||
a16e1123 LP |
2495 | static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { |
2496 | Service *s = SERVICE(u); | |
2339fc93 | 2497 | int r; |
a16e1123 LP |
2498 | |
2499 | assert(u); | |
2500 | assert(key); | |
2501 | assert(value); | |
2502 | assert(fds); | |
2503 | ||
2504 | if (streq(key, "state")) { | |
2505 | ServiceState state; | |
2506 | ||
117dcc57 ZJS |
2507 | state = service_state_from_string(value); |
2508 | if (state < 0) | |
f2341e0a | 2509 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
2510 | else |
2511 | s->deserialized_state = state; | |
f42806df LP |
2512 | } else if (streq(key, "result")) { |
2513 | ServiceResult f; | |
2514 | ||
2515 | f = service_result_from_string(value); | |
2516 | if (f < 0) | |
f2341e0a | 2517 | log_unit_debug(u, "Failed to parse result value: %s", value); |
f42806df LP |
2518 | else if (f != SERVICE_SUCCESS) |
2519 | s->result = f; | |
2520 | ||
2521 | } else if (streq(key, "reload-result")) { | |
2522 | ServiceResult f; | |
2523 | ||
2524 | f = service_result_from_string(value); | |
2525 | if (f < 0) | |
f2341e0a | 2526 | log_unit_debug(u, "Failed to parse reload result value: %s", value); |
f42806df LP |
2527 | else if (f != SERVICE_SUCCESS) |
2528 | s->reload_result = f; | |
a16e1123 | 2529 | |
a16e1123 | 2530 | } else if (streq(key, "control-pid")) { |
5925dd3c | 2531 | pid_t pid; |
a16e1123 | 2532 | |
e364ad06 | 2533 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2534 | log_unit_debug(u, "Failed to parse control-pid value: %s", value); |
a16e1123 | 2535 | else |
e55224ca | 2536 | s->control_pid = pid; |
a16e1123 | 2537 | } else if (streq(key, "main-pid")) { |
5925dd3c | 2538 | pid_t pid; |
a16e1123 | 2539 | |
e364ad06 | 2540 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2541 | log_unit_debug(u, "Failed to parse main-pid value: %s", value); |
7400b9d2 LP |
2542 | else { |
2543 | service_set_main_pid(s, pid); | |
2544 | unit_watch_pid(UNIT(s), pid); | |
2545 | } | |
a16e1123 LP |
2546 | } else if (streq(key, "main-pid-known")) { |
2547 | int b; | |
2548 | ||
117dcc57 ZJS |
2549 | b = parse_boolean(value); |
2550 | if (b < 0) | |
f2341e0a | 2551 | log_unit_debug(u, "Failed to parse main-pid-known value: %s", value); |
a16e1123 LP |
2552 | else |
2553 | s->main_pid_known = b; | |
de1d4f9b WF |
2554 | } else if (streq(key, "bus-name-good")) { |
2555 | int b; | |
2556 | ||
2557 | b = parse_boolean(value); | |
2558 | if (b < 0) | |
2559 | log_unit_debug(u, "Failed to parse bus-name-good value: %s", value); | |
2560 | else | |
2561 | s->bus_name_good = b; | |
d8ccf5fd DM |
2562 | } else if (streq(key, "bus-name-owner")) { |
2563 | r = free_and_strdup(&s->bus_name_owner, value); | |
2564 | if (r < 0) | |
2565 | log_unit_error_errno(u, r, "Unable to deserialize current bus owner %s: %m", value); | |
3a2776bc LP |
2566 | } else if (streq(key, "status-text")) { |
2567 | char *t; | |
2568 | ||
f2341e0a LP |
2569 | r = cunescape(value, 0, &t); |
2570 | if (r < 0) | |
2571 | log_unit_debug_errno(u, r, "Failed to unescape status text: %s", value); | |
117dcc57 | 2572 | else { |
3a2776bc LP |
2573 | free(s->status_text); |
2574 | s->status_text = t; | |
2575 | } | |
2576 | ||
9dfb64f8 ZJS |
2577 | } else if (streq(key, "accept-socket")) { |
2578 | Unit *socket; | |
2579 | ||
2580 | r = manager_load_unit(u->manager, value, NULL, NULL, &socket); | |
2581 | if (r < 0) | |
2582 | log_unit_debug_errno(u, r, "Failed to load accept-socket unit: %s", value); | |
2583 | else { | |
2584 | unit_ref_set(&s->accept_socket, socket); | |
2585 | SOCKET(socket)->n_connections++; | |
2586 | } | |
2587 | ||
a16e1123 LP |
2588 | } else if (streq(key, "socket-fd")) { |
2589 | int fd; | |
2590 | ||
2591 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 2592 | log_unit_debug(u, "Failed to parse socket-fd value: %s", value); |
a16e1123 | 2593 | else { |
574634bc | 2594 | asynchronous_close(s->socket_fd); |
a16e1123 LP |
2595 | s->socket_fd = fdset_remove(fds, fd); |
2596 | } | |
2339fc93 | 2597 | } else if (streq(key, "fd-store-fd")) { |
8dd4c05b LP |
2598 | const char *fdv; |
2599 | size_t pf; | |
2339fc93 LP |
2600 | int fd; |
2601 | ||
8dd4c05b LP |
2602 | pf = strcspn(value, WHITESPACE); |
2603 | fdv = strndupa(value, pf); | |
2604 | ||
2605 | if (safe_atoi(fdv, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 2606 | log_unit_debug(u, "Failed to parse fd-store-fd value: %s", value); |
2339fc93 | 2607 | else { |
8dd4c05b LP |
2608 | _cleanup_free_ char *t = NULL; |
2609 | const char *fdn; | |
2610 | ||
2611 | fdn = value + pf; | |
2612 | fdn += strspn(fdn, WHITESPACE); | |
2613 | (void) cunescape(fdn, 0, &t); | |
2614 | ||
2615 | r = service_add_fd_store(s, fd, t); | |
2339fc93 | 2616 | if (r < 0) |
f2341e0a | 2617 | log_unit_error_errno(u, r, "Failed to add fd to store: %m"); |
9021ff17 | 2618 | else |
2339fc93 LP |
2619 | fdset_remove(fds, fd); |
2620 | } | |
2621 | ||
ecdbca40 LP |
2622 | } else if (streq(key, "main-exec-status-pid")) { |
2623 | pid_t pid; | |
2624 | ||
e364ad06 | 2625 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2626 | log_unit_debug(u, "Failed to parse main-exec-status-pid value: %s", value); |
ecdbca40 LP |
2627 | else |
2628 | s->main_exec_status.pid = pid; | |
2629 | } else if (streq(key, "main-exec-status-code")) { | |
2630 | int i; | |
2631 | ||
e364ad06 | 2632 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 2633 | log_unit_debug(u, "Failed to parse main-exec-status-code value: %s", value); |
ecdbca40 LP |
2634 | else |
2635 | s->main_exec_status.code = i; | |
2636 | } else if (streq(key, "main-exec-status-status")) { | |
2637 | int i; | |
2638 | ||
e364ad06 | 2639 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 2640 | log_unit_debug(u, "Failed to parse main-exec-status-status value: %s", value); |
ecdbca40 LP |
2641 | else |
2642 | s->main_exec_status.status = i; | |
799fd0fd LP |
2643 | } else if (streq(key, "main-exec-status-start")) |
2644 | dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp); | |
2645 | else if (streq(key, "main-exec-status-exit")) | |
2646 | dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp); | |
a6927d7f MO |
2647 | else if (streq(key, "watchdog-timestamp")) |
2648 | dual_timestamp_deserialize(value, &s->watchdog_timestamp); | |
613b411c | 2649 | else if (streq(key, "forbid-restart")) { |
6aca9a58 SE |
2650 | int b; |
2651 | ||
2652 | b = parse_boolean(value); | |
2653 | if (b < 0) | |
f2341e0a | 2654 | log_unit_debug(u, "Failed to parse forbid-restart value: %s", value); |
6aca9a58 SE |
2655 | else |
2656 | s->forbid_restart = b; | |
a34ceba6 LP |
2657 | } else if (streq(key, "stdin-fd")) { |
2658 | int fd; | |
2659 | ||
2660 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2661 | log_unit_debug(u, "Failed to parse stdin-fd value: %s", value); | |
2662 | else { | |
2663 | asynchronous_close(s->stdin_fd); | |
2664 | s->stdin_fd = fdset_remove(fds, fd); | |
1e22b5cd | 2665 | s->exec_context.stdio_as_fds = true; |
a34ceba6 LP |
2666 | } |
2667 | } else if (streq(key, "stdout-fd")) { | |
2668 | int fd; | |
2669 | ||
2670 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2671 | log_unit_debug(u, "Failed to parse stdout-fd value: %s", value); | |
2672 | else { | |
2673 | asynchronous_close(s->stdout_fd); | |
2674 | s->stdout_fd = fdset_remove(fds, fd); | |
1e22b5cd | 2675 | s->exec_context.stdio_as_fds = true; |
a34ceba6 LP |
2676 | } |
2677 | } else if (streq(key, "stderr-fd")) { | |
2678 | int fd; | |
2679 | ||
2680 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2681 | log_unit_debug(u, "Failed to parse stderr-fd value: %s", value); | |
2682 | else { | |
2683 | asynchronous_close(s->stderr_fd); | |
2684 | s->stderr_fd = fdset_remove(fds, fd); | |
1e22b5cd | 2685 | s->exec_context.stdio_as_fds = true; |
a34ceba6 | 2686 | } |
2787d83c M |
2687 | } else if (streq(key, "watchdog-override-usec")) { |
2688 | usec_t watchdog_override_usec; | |
2689 | if (timestamp_deserialize(value, &watchdog_override_usec) < 0) | |
2690 | log_unit_debug(u, "Failed to parse watchdog_override_usec value: %s", value); | |
2691 | else { | |
2692 | s->watchdog_override_enable = true; | |
2693 | s->watchdog_override_usec = watchdog_override_usec; | |
2694 | } | |
e266c068 MS |
2695 | } else if (STR_IN_SET(key, "main-command", "control-command")) { |
2696 | r = service_deserialize_exec_command(u, key, value); | |
2697 | if (r < 0) | |
2698 | log_unit_debug_errno(u, r, "Failed to parse serialized command \"%s\": %m", value); | |
7a0019d3 LP |
2699 | |
2700 | } else if (streq(key, "n-restarts")) { | |
2701 | r = safe_atou(value, &s->n_restarts); | |
2702 | if (r < 0) | |
2703 | log_unit_debug_errno(u, r, "Failed to parse serialized restart counter '%s': %m", value); | |
2704 | ||
2705 | } else if (streq(key, "flush-n-restarts")) { | |
2706 | r = parse_boolean(value); | |
2707 | if (r < 0) | |
2708 | log_unit_debug_errno(u, r, "Failed to parse serialized flush restart counter setting '%s': %m", value); | |
2709 | else | |
2710 | s->flush_n_restarts = r; | |
c17ec25e | 2711 | } else |
f2341e0a | 2712 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
2713 | |
2714 | return 0; | |
2715 | } | |
2716 | ||
44a6b1b6 | 2717 | _pure_ static UnitActiveState service_active_state(Unit *u) { |
e056b01d LP |
2718 | const UnitActiveState *table; |
2719 | ||
87f0e418 | 2720 | assert(u); |
5cb5a6ff | 2721 | |
e056b01d LP |
2722 | table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
2723 | ||
2724 | return table[SERVICE(u)->state]; | |
034c6ed7 LP |
2725 | } |
2726 | ||
10a94420 LP |
2727 | static const char *service_sub_state_to_string(Unit *u) { |
2728 | assert(u); | |
2729 | ||
2730 | return service_state_to_string(SERVICE(u)->state); | |
2731 | } | |
2732 | ||
701cc384 LP |
2733 | static bool service_check_gc(Unit *u) { |
2734 | Service *s = SERVICE(u); | |
2735 | ||
2736 | assert(s); | |
2737 | ||
e98b2fbb LP |
2738 | /* Never clean up services that still have a process around, even if the service is formally dead. Note that |
2739 | * unit_check_gc() already checked our cgroup for us, we just check our two additional PIDs, too, in case they | |
2740 | * have moved outside of the cgroup. */ | |
2741 | ||
2742 | if (main_pid_good(s) > 0 || | |
6d55002a LP |
2743 | control_pid_good(s) > 0) |
2744 | return true; | |
2745 | ||
6d55002a LP |
2746 | return false; |
2747 | } | |
2748 | ||
3a111838 MS |
2749 | static int service_retry_pid_file(Service *s) { |
2750 | int r; | |
2751 | ||
2752 | assert(s->pid_file); | |
3742095b | 2753 | assert(IN_SET(s->state, SERVICE_START, SERVICE_START_POST)); |
3a111838 MS |
2754 | |
2755 | r = service_load_pid_file(s, false); | |
2756 | if (r < 0) | |
2757 | return r; | |
2758 | ||
2759 | service_unwatch_pid_file(s); | |
2760 | ||
f42806df | 2761 | service_enter_running(s, SERVICE_SUCCESS); |
3a111838 MS |
2762 | return 0; |
2763 | } | |
2764 | ||
2765 | static int service_watch_pid_file(Service *s) { | |
2766 | int r; | |
2767 | ||
f2341e0a | 2768 | log_unit_debug(UNIT(s), "Setting watch for PID file %s", s->pid_file_pathspec->path); |
8bb2d17d | 2769 | |
718db961 | 2770 | r = path_spec_watch(s->pid_file_pathspec, service_dispatch_io); |
3a111838 MS |
2771 | if (r < 0) |
2772 | goto fail; | |
2773 | ||
2774 | /* the pidfile might have appeared just before we set the watch */ | |
f2341e0a | 2775 | log_unit_debug(UNIT(s), "Trying to read PID file %s in case it changed", s->pid_file_pathspec->path); |
3a111838 MS |
2776 | service_retry_pid_file(s); |
2777 | ||
2778 | return 0; | |
2779 | fail: | |
f2341e0a | 2780 | log_unit_error_errno(UNIT(s), r, "Failed to set a watch for PID file %s: %m", s->pid_file_pathspec->path); |
3a111838 MS |
2781 | service_unwatch_pid_file(s); |
2782 | return r; | |
2783 | } | |
2784 | ||
2785 | static int service_demand_pid_file(Service *s) { | |
2786 | PathSpec *ps; | |
2787 | ||
2788 | assert(s->pid_file); | |
2789 | assert(!s->pid_file_pathspec); | |
2790 | ||
2791 | ps = new0(PathSpec, 1); | |
2792 | if (!ps) | |
2793 | return -ENOMEM; | |
2794 | ||
718db961 | 2795 | ps->unit = UNIT(s); |
3a111838 MS |
2796 | ps->path = strdup(s->pid_file); |
2797 | if (!ps->path) { | |
2798 | free(ps); | |
2799 | return -ENOMEM; | |
2800 | } | |
2801 | ||
2802 | path_kill_slashes(ps->path); | |
2803 | ||
2804 | /* PATH_CHANGED would not be enough. There are daemons (sendmail) that | |
2805 | * keep their PID file open all the time. */ | |
2806 | ps->type = PATH_MODIFIED; | |
2807 | ps->inotify_fd = -1; | |
2808 | ||
2809 | s->pid_file_pathspec = ps; | |
2810 | ||
2811 | return service_watch_pid_file(s); | |
2812 | } | |
2813 | ||
718db961 | 2814 | static int service_dispatch_io(sd_event_source *source, int fd, uint32_t events, void *userdata) { |
e14c2802 LP |
2815 | PathSpec *p = userdata; |
2816 | Service *s; | |
2817 | ||
2818 | assert(p); | |
2819 | ||
2820 | s = SERVICE(p->unit); | |
3a111838 MS |
2821 | |
2822 | assert(s); | |
2823 | assert(fd >= 0); | |
3742095b | 2824 | assert(IN_SET(s->state, SERVICE_START, SERVICE_START_POST)); |
3a111838 | 2825 | assert(s->pid_file_pathspec); |
57020a3a | 2826 | assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd)); |
3a111838 | 2827 | |
f2341e0a | 2828 | log_unit_debug(UNIT(s), "inotify event"); |
3a111838 | 2829 | |
e14c2802 | 2830 | if (path_spec_fd_event(p, events) < 0) |
3a111838 MS |
2831 | goto fail; |
2832 | ||
2833 | if (service_retry_pid_file(s) == 0) | |
718db961 | 2834 | return 0; |
3a111838 MS |
2835 | |
2836 | if (service_watch_pid_file(s) < 0) | |
2837 | goto fail; | |
2838 | ||
718db961 LP |
2839 | return 0; |
2840 | ||
3a111838 MS |
2841 | fail: |
2842 | service_unwatch_pid_file(s); | |
f42806df | 2843 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
718db961 | 2844 | return 0; |
3a111838 MS |
2845 | } |
2846 | ||
a911bb9a LP |
2847 | static void service_notify_cgroup_empty_event(Unit *u) { |
2848 | Service *s = SERVICE(u); | |
2849 | ||
2850 | assert(u); | |
2851 | ||
f2341e0a | 2852 | log_unit_debug(u, "cgroup is empty"); |
a911bb9a LP |
2853 | |
2854 | switch (s->state) { | |
2855 | ||
2856 | /* Waiting for SIGCHLD is usually more interesting, | |
2857 | * because it includes return codes/signals. Which is | |
2858 | * why we ignore the cgroup events for most cases, | |
2859 | * except when we don't know pid which to expect the | |
2860 | * SIGCHLD for. */ | |
2861 | ||
2862 | case SERVICE_START: | |
3c751b1b LP |
2863 | if (s->type == SERVICE_NOTIFY && |
2864 | main_pid_good(s) == 0 && | |
2865 | control_pid_good(s) == 0) { | |
3d474ef7 | 2866 | /* No chance of getting a ready notification anymore */ |
c3fda31d | 2867 | service_enter_stop_post(s, SERVICE_FAILURE_PROTOCOL); |
71e529fc JW |
2868 | break; |
2869 | } | |
2870 | ||
4831981d | 2871 | _fallthrough_; |
71e529fc | 2872 | case SERVICE_START_POST: |
3c751b1b LP |
2873 | if (s->pid_file_pathspec && |
2874 | main_pid_good(s) == 0 && | |
2875 | control_pid_good(s) == 0) { | |
2876 | ||
3d474ef7 | 2877 | /* Give up hoping for the daemon to write its PID file */ |
f2341e0a | 2878 | log_unit_warning(u, "Daemon never wrote its PID file. Failing."); |
8bb2d17d | 2879 | |
a911bb9a LP |
2880 | service_unwatch_pid_file(s); |
2881 | if (s->state == SERVICE_START) | |
c3fda31d | 2882 | service_enter_stop_post(s, SERVICE_FAILURE_PROTOCOL); |
a911bb9a | 2883 | else |
c35755fb | 2884 | service_enter_stop(s, SERVICE_FAILURE_PROTOCOL); |
a911bb9a LP |
2885 | } |
2886 | break; | |
2887 | ||
2888 | case SERVICE_RUNNING: | |
2889 | /* service_enter_running() will figure out what to do */ | |
2890 | service_enter_running(s, SERVICE_SUCCESS); | |
2891 | break; | |
2892 | ||
db2cb23b | 2893 | case SERVICE_STOP_SIGABRT: |
a911bb9a LP |
2894 | case SERVICE_STOP_SIGTERM: |
2895 | case SERVICE_STOP_SIGKILL: | |
2896 | ||
b13ddbbc | 2897 | if (main_pid_good(s) <= 0 && control_pid_good(s) <= 0) |
a911bb9a LP |
2898 | service_enter_stop_post(s, SERVICE_SUCCESS); |
2899 | ||
2900 | break; | |
2901 | ||
2902 | case SERVICE_STOP_POST: | |
2903 | case SERVICE_FINAL_SIGTERM: | |
2904 | case SERVICE_FINAL_SIGKILL: | |
b13ddbbc | 2905 | if (main_pid_good(s) <= 0 && control_pid_good(s) <= 0) |
a911bb9a LP |
2906 | service_enter_dead(s, SERVICE_SUCCESS, true); |
2907 | ||
2908 | break; | |
2909 | ||
2910 | default: | |
2911 | ; | |
2912 | } | |
2913 | } | |
2914 | ||
87f0e418 LP |
2915 | static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
2916 | Service *s = SERVICE(u); | |
f42806df | 2917 | ServiceResult f; |
5cb5a6ff LP |
2918 | |
2919 | assert(s); | |
034c6ed7 LP |
2920 | assert(pid >= 0); |
2921 | ||
1f0958f6 | 2922 | if (is_clean_exit(code, status, s->type == SERVICE_ONESHOT ? EXIT_CLEAN_COMMAND : EXIT_CLEAN_DAEMON, &s->success_status)) |
f42806df LP |
2923 | f = SERVICE_SUCCESS; |
2924 | else if (code == CLD_EXITED) | |
2925 | f = SERVICE_FAILURE_EXIT_CODE; | |
2926 | else if (code == CLD_KILLED) | |
2927 | f = SERVICE_FAILURE_SIGNAL; | |
2928 | else if (code == CLD_DUMPED) | |
2929 | f = SERVICE_FAILURE_CORE_DUMP; | |
d06dacd0 | 2930 | else |
cfc4eb4c | 2931 | assert_not_reached("Unknown code"); |
034c6ed7 LP |
2932 | |
2933 | if (s->main_pid == pid) { | |
db01f8b3 MS |
2934 | /* Forking services may occasionally move to a new PID. |
2935 | * As long as they update the PID file before exiting the old | |
2936 | * PID, they're fine. */ | |
5375410b | 2937 | if (service_load_pid_file(s, false) == 0) |
db01f8b3 | 2938 | return; |
034c6ed7 | 2939 | |
034c6ed7 | 2940 | s->main_pid = 0; |
6ea832a2 | 2941 | exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status); |
034c6ed7 | 2942 | |
867b3b7d | 2943 | if (s->main_command) { |
fbeefb45 LP |
2944 | /* If this is not a forking service than the |
2945 | * main process got started and hence we copy | |
2946 | * the exit status so that it is recorded both | |
2947 | * as main and as control process exit | |
2948 | * status */ | |
2949 | ||
867b3b7d | 2950 | s->main_command->exec_status = s->main_exec_status; |
b708e7ce | 2951 | |
3ed0cd26 | 2952 | if (s->main_command->flags & EXEC_COMMAND_IGNORE_FAILURE) |
f42806df | 2953 | f = SERVICE_SUCCESS; |
fbeefb45 LP |
2954 | } else if (s->exec_command[SERVICE_EXEC_START]) { |
2955 | ||
2956 | /* If this is a forked process, then we should | |
2957 | * ignore the return value if this was | |
2958 | * configured for the starter process */ | |
2959 | ||
3ed0cd26 | 2960 | if (s->exec_command[SERVICE_EXEC_START]->flags & EXEC_COMMAND_IGNORE_FAILURE) |
fbeefb45 | 2961 | f = SERVICE_SUCCESS; |
034c6ed7 LP |
2962 | } |
2963 | ||
5368222d LP |
2964 | /* When this is a successful exit, let's log about the exit code on DEBUG level. If this is a failure |
2965 | * and the process exited on its own via exit(), then let's make this a NOTICE, under the assumption | |
2966 | * that the service already logged the reason at a higher log level on its own. However, if the service | |
2967 | * died due to a signal, then it most likely didn't say anything about any reason, hence let's raise | |
2968 | * our log level to WARNING then. */ | |
2969 | ||
2970 | log_struct(f == SERVICE_SUCCESS ? LOG_DEBUG : | |
2971 | (code == CLD_EXITED ? LOG_NOTICE : LOG_WARNING), | |
f2341e0a LP |
2972 | LOG_UNIT_MESSAGE(u, "Main process exited, code=%s, status=%i/%s", |
2973 | sigchld_code_to_string(code), status, | |
e2cc6eca LP |
2974 | strna(code == CLD_EXITED |
2975 | ? exit_status_to_string(status, EXIT_STATUS_FULL) | |
2976 | : signal_to_string(status))), | |
f2341e0a LP |
2977 | "EXIT_CODE=%s", sigchld_code_to_string(code), |
2978 | "EXIT_STATUS=%i", status, | |
ba360bb0 | 2979 | LOG_UNIT_ID(u), |
f1c50bec | 2980 | LOG_UNIT_INVOCATION_ID(u), |
f2341e0a | 2981 | NULL); |
f42806df | 2982 | |
a0fef983 | 2983 | if (s->result == SERVICE_SUCCESS) |
f42806df | 2984 | s->result = f; |
034c6ed7 | 2985 | |
867b3b7d LP |
2986 | if (s->main_command && |
2987 | s->main_command->command_next && | |
b58aeb70 | 2988 | s->type == SERVICE_ONESHOT && |
f42806df | 2989 | f == SERVICE_SUCCESS) { |
034c6ed7 | 2990 | |
34e9ba66 LP |
2991 | /* There is another command to * |
2992 | * execute, so let's do that. */ | |
034c6ed7 | 2993 | |
f2341e0a | 2994 | log_unit_debug(u, "Running next main command for state %s.", service_state_to_string(s->state)); |
f42806df | 2995 | service_run_next_main(s); |
034c6ed7 | 2996 | |
34e9ba66 LP |
2997 | } else { |
2998 | ||
2999 | /* The service exited, so the service is officially | |
3000 | * gone. */ | |
867b3b7d | 3001 | s->main_command = NULL; |
34e9ba66 LP |
3002 | |
3003 | switch (s->state) { | |
3004 | ||
3005 | case SERVICE_START_POST: | |
3006 | case SERVICE_RELOAD: | |
3007 | case SERVICE_STOP: | |
3008 | /* Need to wait until the operation is | |
3009 | * done */ | |
c4653a4d | 3010 | break; |
7d55e835 | 3011 | |
34e9ba66 LP |
3012 | case SERVICE_START: |
3013 | if (s->type == SERVICE_ONESHOT) { | |
3014 | /* This was our main goal, so let's go on */ | |
f42806df | 3015 | if (f == SERVICE_SUCCESS) |
34e9ba66 LP |
3016 | service_enter_start_post(s); |
3017 | else | |
c3fda31d | 3018 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
34e9ba66 | 3019 | break; |
3d474ef7 JW |
3020 | } else if (s->type == SERVICE_NOTIFY) { |
3021 | /* Only enter running through a notification, so that the | |
3022 | * SERVICE_START state signifies that no ready notification | |
3023 | * has been received */ | |
3024 | if (f != SERVICE_SUCCESS) | |
c3fda31d | 3025 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
df66b93f JW |
3026 | else if (!s->remain_after_exit || s->notify_access == NOTIFY_MAIN) |
3027 | /* The service has never been and will never be active */ | |
c3fda31d | 3028 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_PROTOCOL); |
3d474ef7 | 3029 | break; |
34e9ba66 | 3030 | } |
034c6ed7 | 3031 | |
4831981d | 3032 | _fallthrough_; |
34e9ba66 | 3033 | case SERVICE_RUNNING: |
f42806df | 3034 | service_enter_running(s, f); |
34e9ba66 | 3035 | break; |
034c6ed7 | 3036 | |
db2cb23b | 3037 | case SERVICE_STOP_SIGABRT: |
34e9ba66 LP |
3038 | case SERVICE_STOP_SIGTERM: |
3039 | case SERVICE_STOP_SIGKILL: | |
5cb5a6ff | 3040 | |
b13ddbbc | 3041 | if (control_pid_good(s) <= 0) |
f42806df | 3042 | service_enter_stop_post(s, f); |
5cb5a6ff | 3043 | |
34e9ba66 LP |
3044 | /* If there is still a control process, wait for that first */ |
3045 | break; | |
3046 | ||
bf108e55 LP |
3047 | case SERVICE_STOP_POST: |
3048 | case SERVICE_FINAL_SIGTERM: | |
3049 | case SERVICE_FINAL_SIGKILL: | |
3050 | ||
b13ddbbc | 3051 | if (control_pid_good(s) <= 0) |
bf108e55 LP |
3052 | service_enter_dead(s, f, true); |
3053 | break; | |
3054 | ||
34e9ba66 LP |
3055 | default: |
3056 | assert_not_reached("Uh, main process died at wrong time."); | |
3057 | } | |
034c6ed7 | 3058 | } |
5cb5a6ff | 3059 | |
034c6ed7 | 3060 | } else if (s->control_pid == pid) { |
34e9ba66 LP |
3061 | s->control_pid = 0; |
3062 | ||
b708e7ce | 3063 | if (s->control_command) { |
8bb2d17d | 3064 | exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status); |
a16e1123 | 3065 | |
3ed0cd26 | 3066 | if (s->control_command->flags & EXEC_COMMAND_IGNORE_FAILURE) |
f42806df | 3067 | f = SERVICE_SUCCESS; |
b708e7ce LP |
3068 | } |
3069 | ||
f2341e0a LP |
3070 | log_unit_full(u, f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, 0, |
3071 | "Control process exited, code=%s status=%i", | |
3072 | sigchld_code_to_string(code), status); | |
f42806df | 3073 | |
a0fef983 | 3074 | if (s->result == SERVICE_SUCCESS) |
f42806df | 3075 | s->result = f; |
034c6ed7 | 3076 | |
34e9ba66 LP |
3077 | if (s->control_command && |
3078 | s->control_command->command_next && | |
f42806df | 3079 | f == SERVICE_SUCCESS) { |
034c6ed7 LP |
3080 | |
3081 | /* There is another command to * | |
3082 | * execute, so let's do that. */ | |
3083 | ||
f2341e0a | 3084 | log_unit_debug(u, "Running next control command for state %s.", service_state_to_string(s->state)); |
f42806df | 3085 | service_run_next_control(s); |
034c6ed7 | 3086 | |
80876c20 | 3087 | } else { |
034c6ed7 LP |
3088 | /* No further commands for this step, so let's |
3089 | * figure out what to do next */ | |
3090 | ||
a16e1123 LP |
3091 | s->control_command = NULL; |
3092 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
3093 | ||
f2341e0a | 3094 | log_unit_debug(u, "Got final SIGCHLD for state %s.", service_state_to_string(s->state)); |
bd982a8b | 3095 | |
034c6ed7 LP |
3096 | switch (s->state) { |
3097 | ||
3098 | case SERVICE_START_PRE: | |
f42806df | 3099 | if (f == SERVICE_SUCCESS) |
034c6ed7 LP |
3100 | service_enter_start(s); |
3101 | else | |
c3fda31d | 3102 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
034c6ed7 LP |
3103 | break; |
3104 | ||
3105 | case SERVICE_START: | |
bfba3256 LP |
3106 | if (s->type != SERVICE_FORKING) |
3107 | /* Maybe spurious event due to a reload that changed the type? */ | |
3108 | break; | |
034c6ed7 | 3109 | |
f42806df | 3110 | if (f != SERVICE_SUCCESS) { |
c3fda31d | 3111 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
3a111838 MS |
3112 | break; |
3113 | } | |
034c6ed7 | 3114 | |
3a111838 | 3115 | if (s->pid_file) { |
f42806df LP |
3116 | bool has_start_post; |
3117 | int r; | |
3118 | ||
3a111838 MS |
3119 | /* Let's try to load the pid file here if we can. |
3120 | * The PID file might actually be created by a START_POST | |
3121 | * script. In that case don't worry if the loading fails. */ | |
f42806df LP |
3122 | |
3123 | has_start_post = !!s->exec_command[SERVICE_EXEC_START_POST]; | |
3124 | r = service_load_pid_file(s, !has_start_post); | |
3a111838 MS |
3125 | if (!has_start_post && r < 0) { |
3126 | r = service_demand_pid_file(s); | |
b13ddbbc | 3127 | if (r < 0 || cgroup_good(s) == 0) |
c3fda31d | 3128 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_PROTOCOL); |
3a111838 MS |
3129 | break; |
3130 | } | |
034c6ed7 | 3131 | } else |
783e05d6 | 3132 | service_search_main_pid(s); |
034c6ed7 | 3133 | |
3a111838 | 3134 | service_enter_start_post(s); |
034c6ed7 LP |
3135 | break; |
3136 | ||
3137 | case SERVICE_START_POST: | |
f42806df | 3138 | if (f != SERVICE_SUCCESS) { |
ce359e98 | 3139 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
2096e009 | 3140 | break; |
034c6ed7 LP |
3141 | } |
3142 | ||
2096e009 | 3143 | if (s->pid_file) { |
f42806df LP |
3144 | int r; |
3145 | ||
3146 | r = service_load_pid_file(s, true); | |
2096e009 MS |
3147 | if (r < 0) { |
3148 | r = service_demand_pid_file(s); | |
b13ddbbc | 3149 | if (r < 0 || cgroup_good(s) == 0) |
c35755fb | 3150 | service_enter_stop(s, SERVICE_FAILURE_PROTOCOL); |
2096e009 MS |
3151 | break; |
3152 | } | |
3153 | } else | |
783e05d6 | 3154 | service_search_main_pid(s); |
2096e009 | 3155 | |
f42806df | 3156 | service_enter_running(s, SERVICE_SUCCESS); |
3185a36b | 3157 | break; |
034c6ed7 LP |
3158 | |
3159 | case SERVICE_RELOAD: | |
7236ce6e ZJS |
3160 | if (f == SERVICE_SUCCESS) |
3161 | if (service_load_pid_file(s, true) < 0) | |
3162 | service_search_main_pid(s); | |
3185a36b | 3163 | |
f42806df LP |
3164 | s->reload_result = f; |
3165 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
3166 | break; |
3167 | ||
3168 | case SERVICE_STOP: | |
f42806df | 3169 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
034c6ed7 LP |
3170 | break; |
3171 | ||
db2cb23b | 3172 | case SERVICE_STOP_SIGABRT: |
034c6ed7 LP |
3173 | case SERVICE_STOP_SIGTERM: |
3174 | case SERVICE_STOP_SIGKILL: | |
3175 | if (main_pid_good(s) <= 0) | |
f42806df | 3176 | service_enter_stop_post(s, f); |
034c6ed7 LP |
3177 | |
3178 | /* If there is still a service | |
3179 | * process around, wait until | |
3180 | * that one quit, too */ | |
3181 | break; | |
3182 | ||
3183 | case SERVICE_STOP_POST: | |
3184 | case SERVICE_FINAL_SIGTERM: | |
3185 | case SERVICE_FINAL_SIGKILL: | |
bf108e55 LP |
3186 | if (main_pid_good(s) <= 0) |
3187 | service_enter_dead(s, f, true); | |
034c6ed7 LP |
3188 | break; |
3189 | ||
3190 | default: | |
3191 | assert_not_reached("Uh, control process died at wrong time."); | |
3192 | } | |
3193 | } | |
8c47c732 | 3194 | } |
c4e2ceae LP |
3195 | |
3196 | /* Notify clients about changed exit status */ | |
3197 | unit_add_to_dbus_queue(u); | |
a911bb9a LP |
3198 | |
3199 | /* We got one SIGCHLD for the service, let's watch all | |
3200 | * processes that are now running of the service, and watch | |
3201 | * that. Among the PIDs we then watch will be children | |
3202 | * reassigned to us, which hopefully allows us to identify | |
3203 | * when all children are gone */ | |
3204 | unit_tidy_watch_pids(u, s->main_pid, s->control_pid); | |
3205 | unit_watch_all_pids(u); | |
3206 | ||
bbc85a16 EV |
3207 | /* If the PID set is empty now, then let's finish this off |
3208 | (On unified we use proper notifications) */ | |
c22800e4 | 3209 | if (cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER) == 0 && set_isempty(u->pids)) |
09e24654 | 3210 | unit_add_to_cgroup_empty_queue(u); |
034c6ed7 LP |
3211 | } |
3212 | ||
718db961 LP |
3213 | static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
3214 | Service *s = SERVICE(userdata); | |
034c6ed7 LP |
3215 | |
3216 | assert(s); | |
718db961 | 3217 | assert(source == s->timer_event_source); |
034c6ed7 LP |
3218 | |
3219 | switch (s->state) { | |
3220 | ||
3221 | case SERVICE_START_PRE: | |
3222 | case SERVICE_START: | |
f2341e0a | 3223 | log_unit_warning(UNIT(s), "%s operation timed out. Terminating.", s->state == SERVICE_START ? "Start" : "Start-pre"); |
c3fda31d | 3224 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
80876c20 LP |
3225 | break; |
3226 | ||
034c6ed7 | 3227 | case SERVICE_START_POST: |
f2341e0a | 3228 | log_unit_warning(UNIT(s), "Start-post operation timed out. Stopping."); |
ce359e98 | 3229 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3230 | break; |
3231 | ||
36c16a7c LP |
3232 | case SERVICE_RUNNING: |
3233 | log_unit_warning(UNIT(s), "Service reached runtime time limit. Stopping."); | |
3234 | service_enter_stop(s, SERVICE_FAILURE_TIMEOUT); | |
3235 | break; | |
3236 | ||
e2f3b44c | 3237 | case SERVICE_RELOAD: |
089b64d5 | 3238 | log_unit_warning(UNIT(s), "Reload operation timed out. Killing reload process."); |
e9a4f676 | 3239 | service_kill_control_process(s); |
f42806df LP |
3240 | s->reload_result = SERVICE_FAILURE_TIMEOUT; |
3241 | service_enter_running(s, SERVICE_SUCCESS); | |
e2f3b44c LP |
3242 | break; |
3243 | ||
034c6ed7 | 3244 | case SERVICE_STOP: |
f2341e0a | 3245 | log_unit_warning(UNIT(s), "Stopping timed out. Terminating."); |
f42806df | 3246 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3247 | break; |
3248 | ||
db2cb23b | 3249 | case SERVICE_STOP_SIGABRT: |
f2341e0a | 3250 | log_unit_warning(UNIT(s), "State 'stop-sigabrt' timed out. Terminating."); |
2ab2ab7b | 3251 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
db2cb23b UTL |
3252 | break; |
3253 | ||
034c6ed7 | 3254 | case SERVICE_STOP_SIGTERM: |
4819ff03 | 3255 | if (s->kill_context.send_sigkill) { |
f2341e0a | 3256 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Killing."); |
f42806df | 3257 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 3258 | } else { |
f2341e0a | 3259 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Skipping SIGKILL."); |
f42806df | 3260 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
ba035df2 LP |
3261 | } |
3262 | ||
034c6ed7 LP |
3263 | break; |
3264 | ||
3265 | case SERVICE_STOP_SIGKILL: | |
35b8ca3a | 3266 | /* Uh, we sent a SIGKILL and it is still not gone? |
034c6ed7 LP |
3267 | * Must be something we cannot kill, so let's just be |
3268 | * weirded out and continue */ | |
3269 | ||
f2341e0a | 3270 | log_unit_warning(UNIT(s), "Processes still around after SIGKILL. Ignoring."); |
f42806df | 3271 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3272 | break; |
3273 | ||
3274 | case SERVICE_STOP_POST: | |
f2341e0a | 3275 | log_unit_warning(UNIT(s), "State 'stop-post' timed out. Terminating."); |
f42806df | 3276 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3277 | break; |
3278 | ||
3279 | case SERVICE_FINAL_SIGTERM: | |
4819ff03 | 3280 | if (s->kill_context.send_sigkill) { |
f2341e0a | 3281 | log_unit_warning(UNIT(s), "State 'stop-final-sigterm' timed out. Killing."); |
f42806df | 3282 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 3283 | } else { |
f2341e0a | 3284 | log_unit_warning(UNIT(s), "State 'stop-final-sigterm' timed out. Skipping SIGKILL. Entering failed mode."); |
f42806df | 3285 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false); |
ba035df2 LP |
3286 | } |
3287 | ||
034c6ed7 LP |
3288 | break; |
3289 | ||
3290 | case SERVICE_FINAL_SIGKILL: | |
f2341e0a | 3291 | log_unit_warning(UNIT(s), "Processes still around after final SIGKILL. Entering failed mode."); |
f42806df | 3292 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true); |
034c6ed7 LP |
3293 | break; |
3294 | ||
3295 | case SERVICE_AUTO_RESTART: | |
f2341e0a | 3296 | log_unit_info(UNIT(s), |
ef417cfd | 3297 | s->restart_usec > 0 ? |
f2341e0a LP |
3298 | "Service hold-off time over, scheduling restart." : |
3299 | "Service has no hold-off time, scheduling restart."); | |
034c6ed7 LP |
3300 | service_enter_restart(s); |
3301 | break; | |
3302 | ||
3303 | default: | |
3304 | assert_not_reached("Timeout at wrong time."); | |
3305 | } | |
718db961 LP |
3306 | |
3307 | return 0; | |
3308 | } | |
3309 | ||
3310 | static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata) { | |
3311 | Service *s = SERVICE(userdata); | |
a7850c7d | 3312 | char t[FORMAT_TIMESPAN_MAX]; |
2787d83c | 3313 | usec_t watchdog_usec; |
718db961 LP |
3314 | |
3315 | assert(s); | |
3316 | assert(source == s->watchdog_event_source); | |
3317 | ||
2787d83c M |
3318 | watchdog_usec = service_get_watchdog_usec(s); |
3319 | ||
f2341e0a | 3320 | log_unit_error(UNIT(s), "Watchdog timeout (limit %s)!", |
2787d83c | 3321 | format_timespan(t, sizeof(t), watchdog_usec, 1)); |
8bb2d17d | 3322 | |
db2cb23b | 3323 | service_enter_signal(s, SERVICE_STOP_SIGABRT, SERVICE_FAILURE_WATCHDOG); |
842129f5 | 3324 | |
718db961 | 3325 | return 0; |
5cb5a6ff LP |
3326 | } |
3327 | ||
e3285237 LP |
3328 | static bool service_notify_message_authorized(Service *s, pid_t pid, char **tags, FDSet *fds) { |
3329 | assert(s); | |
8c47c732 | 3330 | |
c952c6ec | 3331 | if (s->notify_access == NOTIFY_NONE) { |
e3285237 LP |
3332 | log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception is disabled.", pid); |
3333 | return false; | |
3334 | } | |
3335 | ||
3336 | if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) { | |
336c6e46 | 3337 | if (s->main_pid != 0) |
e3285237 | 3338 | log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception only permitted for main PID "PID_FMT, pid, s->main_pid); |
336c6e46 | 3339 | else |
e3285237 LP |
3340 | log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception only permitted for main PID which is currently not known", pid); |
3341 | ||
3342 | return false; | |
3343 | } | |
3344 | ||
3345 | if (s->notify_access == NOTIFY_EXEC && pid != s->main_pid && pid != s->control_pid) { | |
6375bd20 | 3346 | if (s->main_pid != 0 && s->control_pid != 0) |
e3285237 | 3347 | log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception only permitted for main PID "PID_FMT" and control PID "PID_FMT, |
6375bd20 JW |
3348 | pid, s->main_pid, s->control_pid); |
3349 | else if (s->main_pid != 0) | |
e3285237 | 3350 | log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception only permitted for main PID "PID_FMT, pid, s->main_pid); |
6375bd20 | 3351 | else if (s->control_pid != 0) |
e3285237 | 3352 | log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception only permitted for control PID "PID_FMT, pid, s->control_pid); |
6375bd20 | 3353 | else |
e3285237 LP |
3354 | log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception only permitted for main PID and control PID which are currently not known", pid); |
3355 | ||
3356 | return false; | |
9711848f LP |
3357 | } |
3358 | ||
e3285237 LP |
3359 | return true; |
3360 | } | |
3361 | ||
3362 | static void service_notify_message(Unit *u, pid_t pid, char **tags, FDSet *fds) { | |
3363 | Service *s = SERVICE(u); | |
3364 | bool notify_dbus = false; | |
3365 | const char *e; | |
cc2b7b11 | 3366 | char **i; |
e3285237 LP |
3367 | |
3368 | assert(u); | |
3369 | ||
3370 | if (!service_notify_message_authorized(SERVICE(u), pid, tags, fds)) | |
3371 | return; | |
3372 | ||
9711848f LP |
3373 | if (log_get_max_level() >= LOG_DEBUG) { |
3374 | _cleanup_free_ char *cc = NULL; | |
3375 | ||
3376 | cc = strv_join(tags, ", "); | |
34959677 | 3377 | log_unit_debug(u, "Got notification message from PID "PID_FMT" (%s)", pid, isempty(cc) ? "n/a" : cc); |
9711848f | 3378 | } |
c952c6ec | 3379 | |
8c47c732 | 3380 | /* Interpret MAINPID= */ |
28849dba | 3381 | e = strv_find_startswith(tags, "MAINPID="); |
5e56b378 | 3382 | if (e && IN_SET(s->state, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) { |
28849dba | 3383 | if (parse_pid(e, &pid) < 0) |
f2341e0a | 3384 | log_unit_warning(u, "Failed to parse MAINPID= field in notification message: %s", e); |
3c9512c7 JW |
3385 | else if (pid == s->control_pid) |
3386 | log_unit_warning(u, "A control process cannot also be the main process"); | |
df0ff127 | 3387 | else if (pid == getpid_cached() || pid == 1) |
6939ce64 | 3388 | log_unit_warning(u, "Service manager can't be main process, ignoring sd_notify() MAINPID= field"); |
8c47c732 | 3389 | else { |
5925dd3c | 3390 | service_set_main_pid(s, pid); |
7400b9d2 | 3391 | unit_watch_pid(UNIT(s), pid); |
30b5275a | 3392 | notify_dbus = true; |
8c47c732 LP |
3393 | } |
3394 | } | |
3395 | ||
cc2b7b11 LP |
3396 | /* Interpret READY=/STOPPING=/RELOADING=. Last one wins. */ |
3397 | STRV_FOREACH_BACKWARDS(i, tags) { | |
308d72dc | 3398 | |
cc2b7b11 LP |
3399 | if (streq(*i, "READY=1")) { |
3400 | s->notify_state = NOTIFY_READY; | |
308d72dc | 3401 | |
cc2b7b11 LP |
3402 | /* Type=notify services inform us about completed |
3403 | * initialization with READY=1 */ | |
3404 | if (s->type == SERVICE_NOTIFY && s->state == SERVICE_START) | |
3405 | service_enter_start_post(s); | |
308d72dc | 3406 | |
cc2b7b11 LP |
3407 | /* Sending READY=1 while we are reloading informs us |
3408 | * that the reloading is complete */ | |
3409 | if (s->state == SERVICE_RELOAD && s->control_pid == 0) | |
3410 | service_enter_running(s, SERVICE_SUCCESS); | |
308d72dc | 3411 | |
cc2b7b11 LP |
3412 | notify_dbus = true; |
3413 | break; | |
308d72dc | 3414 | |
cc2b7b11 LP |
3415 | } else if (streq(*i, "RELOADING=1")) { |
3416 | s->notify_state = NOTIFY_RELOADING; | |
308d72dc | 3417 | |
cc2b7b11 LP |
3418 | if (s->state == SERVICE_RUNNING) |
3419 | service_enter_reload_by_notify(s); | |
308d72dc | 3420 | |
cc2b7b11 LP |
3421 | notify_dbus = true; |
3422 | break; | |
308d72dc | 3423 | |
cc2b7b11 LP |
3424 | } else if (streq(*i, "STOPPING=1")) { |
3425 | s->notify_state = NOTIFY_STOPPING; | |
308d72dc | 3426 | |
cc2b7b11 LP |
3427 | if (s->state == SERVICE_RUNNING) |
3428 | service_enter_stop_by_notify(s); | |
308d72dc | 3429 | |
cc2b7b11 LP |
3430 | notify_dbus = true; |
3431 | break; | |
3432 | } | |
8c47c732 LP |
3433 | } |
3434 | ||
3435 | /* Interpret STATUS= */ | |
28849dba | 3436 | e = strv_find_startswith(tags, "STATUS="); |
7f110ff9 | 3437 | if (e) { |
28849dba | 3438 | _cleanup_free_ char *t = NULL; |
8c47c732 | 3439 | |
28849dba LP |
3440 | if (!isempty(e)) { |
3441 | if (!utf8_is_valid(e)) | |
f2341e0a | 3442 | log_unit_warning(u, "Status message in notification message is not UTF-8 clean."); |
28849dba | 3443 | else { |
28849dba LP |
3444 | t = strdup(e); |
3445 | if (!t) | |
3446 | log_oom(); | |
3a2776bc | 3447 | } |
28849dba | 3448 | } |
8c47c732 | 3449 | |
30b5275a | 3450 | if (!streq_ptr(s->status_text, t)) { |
3b319885 | 3451 | free_and_replace(s->status_text, t); |
30b5275a | 3452 | notify_dbus = true; |
28849dba | 3453 | } |
8c47c732 | 3454 | } |
842129f5 | 3455 | |
4774e357 | 3456 | /* Interpret ERRNO= */ |
28849dba | 3457 | e = strv_find_startswith(tags, "ERRNO="); |
4774e357 MAA |
3458 | if (e) { |
3459 | int status_errno; | |
3460 | ||
28849dba | 3461 | if (safe_atoi(e, &status_errno) < 0 || status_errno < 0) |
f2341e0a | 3462 | log_unit_warning(u, "Failed to parse ERRNO= field in notification message: %s", e); |
4774e357 | 3463 | else { |
4774e357 MAA |
3464 | if (s->status_errno != status_errno) { |
3465 | s->status_errno = status_errno; | |
3466 | notify_dbus = true; | |
3467 | } | |
3468 | } | |
3469 | } | |
3470 | ||
6f285378 | 3471 | /* Interpret WATCHDOG= */ |
1f6b4113 | 3472 | if (strv_find(tags, "WATCHDOG=1")) |
842129f5 | 3473 | service_reset_watchdog(s); |
c4e2ceae | 3474 | |
c45d11cb LP |
3475 | e = strv_find_startswith(tags, "WATCHDOG_USEC="); |
3476 | if (e) { | |
3477 | usec_t watchdog_override_usec; | |
3478 | if (safe_atou64(e, &watchdog_override_usec) < 0) | |
3479 | log_unit_warning(u, "Failed to parse WATCHDOG_USEC=%s", e); | |
3480 | else | |
3481 | service_reset_watchdog_timeout(s, watchdog_override_usec); | |
3482 | } | |
3483 | ||
e78ee06d LP |
3484 | /* Process FD store messages. Either FDSTOREREMOVE=1 for removal, or FDSTORE=1 for addition. In both cases, |
3485 | * process FDNAME= for picking the file descriptor name to use. Note that FDNAME= is required when removing | |
3486 | * fds, but optional when pushing in new fds, for compatibility reasons. */ | |
3487 | if (strv_find(tags, "FDSTOREREMOVE=1")) { | |
3488 | const char *name; | |
3489 | ||
3490 | name = strv_find_startswith(tags, "FDNAME="); | |
3491 | if (!name || !fdname_is_valid(name)) | |
3492 | log_unit_warning(u, "FDSTOREREMOVE=1 requested, but no valid file descriptor name passed, ignoring."); | |
3493 | else | |
3494 | service_remove_fd_store(s, name); | |
3495 | ||
3496 | } else if (strv_find(tags, "FDSTORE=1")) { | |
8dd4c05b LP |
3497 | const char *name; |
3498 | ||
3499 | name = strv_find_startswith(tags, "FDNAME="); | |
3500 | if (name && !fdname_is_valid(name)) { | |
3501 | log_unit_warning(u, "Passed FDNAME= name is invalid, ignoring."); | |
3502 | name = NULL; | |
3503 | } | |
3504 | ||
e78ee06d | 3505 | (void) service_add_fd_store_set(s, fds, name); |
8dd4c05b | 3506 | } |
a354329f | 3507 | |
c4e2ceae | 3508 | /* Notify clients about changed status or main pid */ |
30b5275a LP |
3509 | if (notify_dbus) |
3510 | unit_add_to_dbus_queue(u); | |
8c47c732 LP |
3511 | } |
3512 | ||
7a7821c8 | 3513 | static int service_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 3514 | Service *s = SERVICE(u); |
7a7821c8 | 3515 | uint64_t t; |
68db7a3b ZJS |
3516 | int r; |
3517 | ||
3518 | if (!s->timer_event_source) | |
3519 | return 0; | |
3520 | ||
7a7821c8 | 3521 | r = sd_event_source_get_time(s->timer_event_source, &t); |
68db7a3b ZJS |
3522 | if (r < 0) |
3523 | return r; | |
7a7821c8 LP |
3524 | if (t == USEC_INFINITY) |
3525 | return 0; | |
68db7a3b | 3526 | |
7a7821c8 | 3527 | *timeout = t; |
68db7a3b ZJS |
3528 | return 1; |
3529 | } | |
3530 | ||
05e343b7 LP |
3531 | static void service_bus_name_owner_change( |
3532 | Unit *u, | |
3533 | const char *name, | |
3534 | const char *old_owner, | |
3535 | const char *new_owner) { | |
3536 | ||
3537 | Service *s = SERVICE(u); | |
718db961 | 3538 | int r; |
05e343b7 LP |
3539 | |
3540 | assert(s); | |
3541 | assert(name); | |
3542 | ||
3543 | assert(streq(s->bus_name, name)); | |
3544 | assert(old_owner || new_owner); | |
3545 | ||
3546 | if (old_owner && new_owner) | |
f2341e0a | 3547 | log_unit_debug(u, "D-Bus name %s changed owner from %s to %s", name, old_owner, new_owner); |
05e343b7 | 3548 | else if (old_owner) |
f2341e0a | 3549 | log_unit_debug(u, "D-Bus name %s no longer registered by %s", name, old_owner); |
05e343b7 | 3550 | else |
f2341e0a | 3551 | log_unit_debug(u, "D-Bus name %s now registered by %s", name, new_owner); |
05e343b7 LP |
3552 | |
3553 | s->bus_name_good = !!new_owner; | |
3554 | ||
d8ccf5fd DM |
3555 | /* Track the current owner, so we can reconstruct changes after a daemon reload */ |
3556 | r = free_and_strdup(&s->bus_name_owner, new_owner); | |
3557 | if (r < 0) { | |
3558 | log_unit_error_errno(u, r, "Unable to set new bus name owner %s: %m", new_owner); | |
3559 | return; | |
3560 | } | |
3561 | ||
05e343b7 LP |
3562 | if (s->type == SERVICE_DBUS) { |
3563 | ||
3564 | /* service_enter_running() will figure out what to | |
3565 | * do */ | |
3566 | if (s->state == SERVICE_RUNNING) | |
f42806df | 3567 | service_enter_running(s, SERVICE_SUCCESS); |
05e343b7 LP |
3568 | else if (s->state == SERVICE_START && new_owner) |
3569 | service_enter_start_post(s); | |
3570 | ||
3571 | } else if (new_owner && | |
3572 | s->main_pid <= 0 && | |
a6951a50 LP |
3573 | IN_SET(s->state, |
3574 | SERVICE_START, | |
3575 | SERVICE_START_POST, | |
3576 | SERVICE_RUNNING, | |
3577 | SERVICE_RELOAD)) { | |
05e343b7 | 3578 | |
4afd3348 | 3579 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; |
718db961 | 3580 | pid_t pid; |
05e343b7 | 3581 | |
718db961 | 3582 | /* Try to acquire PID from bus service */ |
05e343b7 | 3583 | |
056f95d0 | 3584 | r = sd_bus_get_name_creds(u->manager->api_bus, name, SD_BUS_CREDS_PID, &creds); |
5b12334d LP |
3585 | if (r >= 0) |
3586 | r = sd_bus_creds_get_pid(creds, &pid); | |
718db961 | 3587 | if (r >= 0) { |
7c102d60 | 3588 | log_unit_debug(u, "D-Bus name %s is now owned by process " PID_FMT, name, pid); |
05e343b7 | 3589 | |
718db961 LP |
3590 | service_set_main_pid(s, pid); |
3591 | unit_watch_pid(UNIT(s), pid); | |
3592 | } | |
7400b9d2 | 3593 | } |
05e343b7 LP |
3594 | } |
3595 | ||
16115b0a | 3596 | int service_set_socket_fd(Service *s, int fd, Socket *sock, bool selinux_context_net) { |
79a98c60 LP |
3597 | _cleanup_free_ char *peer = NULL; |
3598 | int r; | |
57020a3a | 3599 | |
4f2d528d LP |
3600 | assert(s); |
3601 | assert(fd >= 0); | |
3602 | ||
7f2fbbff LP |
3603 | /* This is called by the socket code when instantiating a new service for a stream socket and the socket needs |
3604 | * to be configured. We take ownership of the passed fd on success. */ | |
4f2d528d | 3605 | |
1124fe6f | 3606 | if (UNIT(s)->load_state != UNIT_LOADED) |
4f2d528d LP |
3607 | return -EINVAL; |
3608 | ||
3609 | if (s->socket_fd >= 0) | |
3610 | return -EBUSY; | |
3611 | ||
3612 | if (s->state != SERVICE_DEAD) | |
3613 | return -EAGAIN; | |
3614 | ||
366b7db4 | 3615 | if (getpeername_pretty(fd, true, &peer) >= 0) { |
79a98c60 LP |
3616 | |
3617 | if (UNIT(s)->description) { | |
3618 | _cleanup_free_ char *a; | |
3619 | ||
605405c6 | 3620 | a = strjoin(UNIT(s)->description, " (", peer, ")"); |
79a98c60 LP |
3621 | if (!a) |
3622 | return -ENOMEM; | |
3623 | ||
3624 | r = unit_set_description(UNIT(s), a); | |
3625 | } else | |
3626 | r = unit_set_description(UNIT(s), peer); | |
3627 | ||
3628 | if (r < 0) | |
3629 | return r; | |
3630 | } | |
3631 | ||
eef85c4a | 3632 | r = unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false, UNIT_DEPENDENCY_IMPLICIT); |
7f2fbbff LP |
3633 | if (r < 0) |
3634 | return r; | |
3635 | ||
4f2d528d | 3636 | s->socket_fd = fd; |
16115b0a | 3637 | s->socket_fd_selinux_context_net = selinux_context_net; |
6cf6bbc2 | 3638 | |
57020a3a | 3639 | unit_ref_set(&s->accept_socket, UNIT(sock)); |
7f2fbbff | 3640 | return 0; |
4f2d528d LP |
3641 | } |
3642 | ||
fdf20a31 | 3643 | static void service_reset_failed(Unit *u) { |
5632e374 LP |
3644 | Service *s = SERVICE(u); |
3645 | ||
3646 | assert(s); | |
3647 | ||
fdf20a31 | 3648 | if (s->state == SERVICE_FAILED) |
5632e374 LP |
3649 | service_set_state(s, SERVICE_DEAD); |
3650 | ||
f42806df LP |
3651 | s->result = SERVICE_SUCCESS; |
3652 | s->reload_result = SERVICE_SUCCESS; | |
7a0019d3 LP |
3653 | s->n_restarts = 0; |
3654 | s->flush_n_restarts = false; | |
5632e374 LP |
3655 | } |
3656 | ||
718db961 | 3657 | static int service_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
8a0867d6 | 3658 | Service *s = SERVICE(u); |
41efeaec | 3659 | |
a6951a50 LP |
3660 | assert(s); |
3661 | ||
814cc562 | 3662 | return unit_kill_common(u, who, signo, s->main_pid, s->control_pid, error); |
8a0867d6 LP |
3663 | } |
3664 | ||
291d565a LP |
3665 | static int service_main_pid(Unit *u) { |
3666 | Service *s = SERVICE(u); | |
3667 | ||
3668 | assert(s); | |
3669 | ||
3670 | return s->main_pid; | |
3671 | } | |
3672 | ||
3673 | static int service_control_pid(Unit *u) { | |
3674 | Service *s = SERVICE(u); | |
3675 | ||
3676 | assert(s); | |
3677 | ||
3678 | return s->control_pid; | |
3679 | } | |
3680 | ||
94f04347 | 3681 | static const char* const service_restart_table[_SERVICE_RESTART_MAX] = { |
525ee6f4 LP |
3682 | [SERVICE_RESTART_NO] = "no", |
3683 | [SERVICE_RESTART_ON_SUCCESS] = "on-success", | |
50caaedb | 3684 | [SERVICE_RESTART_ON_FAILURE] = "on-failure", |
6cfe2fde | 3685 | [SERVICE_RESTART_ON_ABNORMAL] = "on-abnormal", |
dc99a976 | 3686 | [SERVICE_RESTART_ON_WATCHDOG] = "on-watchdog", |
50caaedb | 3687 | [SERVICE_RESTART_ON_ABORT] = "on-abort", |
6cfe2fde | 3688 | [SERVICE_RESTART_ALWAYS] = "always", |
94f04347 LP |
3689 | }; |
3690 | ||
3691 | DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart); | |
3692 | ||
3693 | static const char* const service_type_table[_SERVICE_TYPE_MAX] = { | |
94f04347 | 3694 | [SERVICE_SIMPLE] = "simple", |
0d624a78 | 3695 | [SERVICE_FORKING] = "forking", |
34e9ba66 | 3696 | [SERVICE_ONESHOT] = "oneshot", |
8c47c732 | 3697 | [SERVICE_DBUS] = "dbus", |
f2b68789 LP |
3698 | [SERVICE_NOTIFY] = "notify", |
3699 | [SERVICE_IDLE] = "idle" | |
94f04347 LP |
3700 | }; |
3701 | ||
3702 | DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType); | |
3703 | ||
e537352b | 3704 | static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = { |
94f04347 LP |
3705 | [SERVICE_EXEC_START_PRE] = "ExecStartPre", |
3706 | [SERVICE_EXEC_START] = "ExecStart", | |
3707 | [SERVICE_EXEC_START_POST] = "ExecStartPost", | |
3708 | [SERVICE_EXEC_RELOAD] = "ExecReload", | |
3709 | [SERVICE_EXEC_STOP] = "ExecStop", | |
3710 | [SERVICE_EXEC_STOP_POST] = "ExecStopPost", | |
3711 | }; | |
3712 | ||
3713 | DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand); | |
3714 | ||
308d72dc LP |
3715 | static const char* const notify_state_table[_NOTIFY_STATE_MAX] = { |
3716 | [NOTIFY_UNKNOWN] = "unknown", | |
3717 | [NOTIFY_READY] = "ready", | |
3718 | [NOTIFY_RELOADING] = "reloading", | |
3719 | [NOTIFY_STOPPING] = "stopping", | |
3720 | }; | |
3721 | ||
3722 | DEFINE_STRING_TABLE_LOOKUP(notify_state, NotifyState); | |
3723 | ||
f42806df LP |
3724 | static const char* const service_result_table[_SERVICE_RESULT_MAX] = { |
3725 | [SERVICE_SUCCESS] = "success", | |
3726 | [SERVICE_FAILURE_RESOURCES] = "resources", | |
c35755fb | 3727 | [SERVICE_FAILURE_PROTOCOL] = "protocol", |
f42806df LP |
3728 | [SERVICE_FAILURE_TIMEOUT] = "timeout", |
3729 | [SERVICE_FAILURE_EXIT_CODE] = "exit-code", | |
3730 | [SERVICE_FAILURE_SIGNAL] = "signal", | |
bb242b7b | 3731 | [SERVICE_FAILURE_CORE_DUMP] = "core-dump", |
8d1b002a | 3732 | [SERVICE_FAILURE_WATCHDOG] = "watchdog", |
07299350 | 3733 | [SERVICE_FAILURE_START_LIMIT_HIT] = "start-limit-hit", |
f42806df LP |
3734 | }; |
3735 | ||
3736 | DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult); | |
3737 | ||
87f0e418 | 3738 | const UnitVTable service_vtable = { |
7d17cfbc | 3739 | .object_size = sizeof(Service), |
718db961 LP |
3740 | .exec_context_offset = offsetof(Service, exec_context), |
3741 | .cgroup_context_offset = offsetof(Service, cgroup_context), | |
3742 | .kill_context_offset = offsetof(Service, kill_context), | |
613b411c | 3743 | .exec_runtime_offset = offsetof(Service, exec_runtime), |
29206d46 | 3744 | .dynamic_creds_offset = offsetof(Service, dynamic_creds), |
3ef63c31 | 3745 | |
f975e971 LP |
3746 | .sections = |
3747 | "Unit\0" | |
3748 | "Service\0" | |
3749 | "Install\0", | |
4ad49000 | 3750 | .private_section = "Service", |
71645aca | 3751 | |
034c6ed7 LP |
3752 | .init = service_init, |
3753 | .done = service_done, | |
a16e1123 | 3754 | .load = service_load, |
a354329f | 3755 | .release_resources = service_release_resources, |
a16e1123 LP |
3756 | |
3757 | .coldplug = service_coldplug, | |
034c6ed7 | 3758 | |
5cb5a6ff LP |
3759 | .dump = service_dump, |
3760 | ||
3761 | .start = service_start, | |
3762 | .stop = service_stop, | |
3763 | .reload = service_reload, | |
3764 | ||
034c6ed7 LP |
3765 | .can_reload = service_can_reload, |
3766 | ||
8a0867d6 LP |
3767 | .kill = service_kill, |
3768 | ||
a16e1123 LP |
3769 | .serialize = service_serialize, |
3770 | .deserialize_item = service_deserialize_item, | |
3771 | ||
5cb5a6ff | 3772 | .active_state = service_active_state, |
10a94420 | 3773 | .sub_state_to_string = service_sub_state_to_string, |
5cb5a6ff | 3774 | |
701cc384 | 3775 | .check_gc = service_check_gc, |
701cc384 | 3776 | |
034c6ed7 | 3777 | .sigchld_event = service_sigchld_event, |
2c4104f0 | 3778 | |
fdf20a31 | 3779 | .reset_failed = service_reset_failed, |
5632e374 | 3780 | |
4ad49000 | 3781 | .notify_cgroup_empty = service_notify_cgroup_empty_event, |
8c47c732 | 3782 | .notify_message = service_notify_message, |
8e274523 | 3783 | |
291d565a LP |
3784 | .main_pid = service_main_pid, |
3785 | .control_pid = service_control_pid, | |
3786 | ||
05e343b7 | 3787 | .bus_name_owner_change = service_bus_name_owner_change, |
05e343b7 | 3788 | |
718db961 | 3789 | .bus_vtable = bus_service_vtable, |
74c964d3 LP |
3790 | .bus_set_property = bus_service_set_property, |
3791 | .bus_commit_properties = bus_service_commit_properties, | |
4139c1b2 | 3792 | |
68db7a3b | 3793 | .get_timeout = service_get_timeout, |
718db961 LP |
3794 | .can_transient = true, |
3795 | ||
c6918296 MS |
3796 | .status_message_formats = { |
3797 | .starting_stopping = { | |
3798 | [0] = "Starting %s...", | |
3799 | [1] = "Stopping %s...", | |
3800 | }, | |
3801 | .finished_start_job = { | |
3802 | [JOB_DONE] = "Started %s.", | |
3803 | [JOB_FAILED] = "Failed to start %s.", | |
c6918296 MS |
3804 | }, |
3805 | .finished_stop_job = { | |
3806 | [JOB_DONE] = "Stopped %s.", | |
3807 | [JOB_FAILED] = "Stopped (with error) %s.", | |
c6918296 MS |
3808 | }, |
3809 | }, | |
5cb5a6ff | 3810 | }; |