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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
a7334b09 | 2 | |
5cb5a6ff | 3 | #include <errno.h> |
034c6ed7 | 4 | #include <signal.h> |
2c4104f0 | 5 | #include <unistd.h> |
5cb5a6ff | 6 | |
7a0019d3 LP |
7 | #include "sd-messages.h" |
8 | ||
b5efdb8a | 9 | #include "alloc-util.h" |
574634bc | 10 | #include "async.h" |
4f5dd394 LP |
11 | #include "bus-error.h" |
12 | #include "bus-kernel.h" | |
13 | #include "bus-util.h" | |
4139c1b2 | 14 | #include "dbus-service.h" |
f6a6225e | 15 | #include "def.h" |
4d1a6904 | 16 | #include "env-util.h" |
4f5dd394 LP |
17 | #include "escape.h" |
18 | #include "exit-status.h" | |
3ffd4af2 | 19 | #include "fd-util.h" |
a5c32cff | 20 | #include "fileio.h" |
f97b34a6 | 21 | #include "format-util.h" |
f4f15635 | 22 | #include "fs-util.h" |
4f5dd394 LP |
23 | #include "load-dropin.h" |
24 | #include "load-fragment.h" | |
25 | #include "log.h" | |
26 | #include "manager.h" | |
6bedfcbb | 27 | #include "parse-util.h" |
4f5dd394 | 28 | #include "path-util.h" |
0b452006 | 29 | #include "process-util.h" |
3ffd4af2 | 30 | #include "service.h" |
24882e06 | 31 | #include "signal-util.h" |
4f5dd394 | 32 | #include "special.h" |
e266c068 | 33 | #include "stdio-util.h" |
8b43440b | 34 | #include "string-table.h" |
07630cea | 35 | #include "string-util.h" |
4f5dd394 LP |
36 | #include "strv.h" |
37 | #include "unit-name.h" | |
4f5dd394 LP |
38 | #include "unit.h" |
39 | #include "utf8.h" | |
40 | #include "util.h" | |
034c6ed7 | 41 | |
acbb0225 | 42 | static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = { |
87f0e418 LP |
43 | [SERVICE_DEAD] = UNIT_INACTIVE, |
44 | [SERVICE_START_PRE] = UNIT_ACTIVATING, | |
45 | [SERVICE_START] = UNIT_ACTIVATING, | |
46 | [SERVICE_START_POST] = UNIT_ACTIVATING, | |
47 | [SERVICE_RUNNING] = UNIT_ACTIVE, | |
80876c20 | 48 | [SERVICE_EXITED] = UNIT_ACTIVE, |
032ff4af | 49 | [SERVICE_RELOAD] = UNIT_RELOADING, |
87f0e418 | 50 | [SERVICE_STOP] = UNIT_DEACTIVATING, |
c87700a1 | 51 | [SERVICE_STOP_WATCHDOG] = UNIT_DEACTIVATING, |
87f0e418 LP |
52 | [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, |
53 | [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
54 | [SERVICE_STOP_POST] = UNIT_DEACTIVATING, | |
55 | [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, | |
56 | [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
fdf20a31 | 57 | [SERVICE_FAILED] = UNIT_FAILED, |
6124958c | 58 | [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING |
034c6ed7 | 59 | }; |
5cb5a6ff | 60 | |
e056b01d LP |
61 | /* For Type=idle we never want to delay any other jobs, hence we |
62 | * consider idle jobs active as soon as we start working on them */ | |
63 | static const UnitActiveState state_translation_table_idle[_SERVICE_STATE_MAX] = { | |
64 | [SERVICE_DEAD] = UNIT_INACTIVE, | |
65 | [SERVICE_START_PRE] = UNIT_ACTIVE, | |
66 | [SERVICE_START] = UNIT_ACTIVE, | |
67 | [SERVICE_START_POST] = UNIT_ACTIVE, | |
68 | [SERVICE_RUNNING] = UNIT_ACTIVE, | |
69 | [SERVICE_EXITED] = UNIT_ACTIVE, | |
70 | [SERVICE_RELOAD] = UNIT_RELOADING, | |
71 | [SERVICE_STOP] = UNIT_DEACTIVATING, | |
c87700a1 | 72 | [SERVICE_STOP_WATCHDOG] = UNIT_DEACTIVATING, |
e056b01d LP |
73 | [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, |
74 | [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
75 | [SERVICE_STOP_POST] = UNIT_DEACTIVATING, | |
76 | [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, | |
77 | [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
78 | [SERVICE_FAILED] = UNIT_FAILED, | |
79 | [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING | |
80 | }; | |
81 | ||
5686391b | 82 | static int service_dispatch_inotify_io(sd_event_source *source, int fd, uint32_t events, void *userdata); |
718db961 LP |
83 | static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); |
84 | static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata); | |
5686391b | 85 | static int service_dispatch_exec_io(sd_event_source *source, int fd, uint32_t events, void *userdata); |
718db961 | 86 | |
842129f5 | 87 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f); |
308d72dc | 88 | static void service_enter_reload_by_notify(Service *s); |
842129f5 | 89 | |
a16e1123 LP |
90 | static void service_init(Unit *u) { |
91 | Service *s = SERVICE(u); | |
92 | ||
93 | assert(u); | |
ac155bb8 | 94 | assert(u->load_state == UNIT_STUB); |
a16e1123 | 95 | |
1f19a534 OS |
96 | s->timeout_start_usec = u->manager->default_timeout_start_usec; |
97 | s->timeout_stop_usec = u->manager->default_timeout_stop_usec; | |
98 | s->restart_usec = u->manager->default_restart_usec; | |
36c16a7c | 99 | s->runtime_max_usec = USEC_INFINITY; |
0b86feac | 100 | s->type = _SERVICE_TYPE_INVALID; |
a16e1123 | 101 | s->socket_fd = -1; |
a34ceba6 | 102 | s->stdin_fd = s->stdout_fd = s->stderr_fd = -1; |
3185a36b | 103 | s->guess_main_pid = true; |
a16e1123 | 104 | |
a16e1123 | 105 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; |
00f5ad93 LP |
106 | |
107 | s->exec_context.keyring_mode = MANAGER_IS_SYSTEM(u->manager) ? | |
108 | EXEC_KEYRING_PRIVATE : EXEC_KEYRING_INHERIT; | |
a16e1123 LP |
109 | } |
110 | ||
5e94833f LP |
111 | static void service_unwatch_control_pid(Service *s) { |
112 | assert(s); | |
113 | ||
114 | if (s->control_pid <= 0) | |
115 | return; | |
116 | ||
117 | unit_unwatch_pid(UNIT(s), s->control_pid); | |
118 | s->control_pid = 0; | |
119 | } | |
120 | ||
121 | static void service_unwatch_main_pid(Service *s) { | |
122 | assert(s); | |
123 | ||
124 | if (s->main_pid <= 0) | |
125 | return; | |
126 | ||
127 | unit_unwatch_pid(UNIT(s), s->main_pid); | |
128 | s->main_pid = 0; | |
129 | } | |
130 | ||
3e52541e MS |
131 | static void service_unwatch_pid_file(Service *s) { |
132 | if (!s->pid_file_pathspec) | |
133 | return; | |
134 | ||
f2341e0a | 135 | log_unit_debug(UNIT(s), "Stopping watch for PID file %s", s->pid_file_pathspec->path); |
718db961 | 136 | path_spec_unwatch(s->pid_file_pathspec); |
3e52541e | 137 | path_spec_done(s->pid_file_pathspec); |
a1e58e8e | 138 | s->pid_file_pathspec = mfree(s->pid_file_pathspec); |
3e52541e MS |
139 | } |
140 | ||
5925dd3c | 141 | static int service_set_main_pid(Service *s, pid_t pid) { |
e55224ca LP |
142 | pid_t ppid; |
143 | ||
5925dd3c LP |
144 | assert(s); |
145 | ||
146 | if (pid <= 1) | |
147 | return -EINVAL; | |
148 | ||
df0ff127 | 149 | if (pid == getpid_cached()) |
5925dd3c LP |
150 | return -EINVAL; |
151 | ||
7400b9d2 LP |
152 | if (s->main_pid == pid && s->main_pid_known) |
153 | return 0; | |
154 | ||
155 | if (s->main_pid != pid) { | |
156 | service_unwatch_main_pid(s); | |
157 | exec_status_start(&s->main_exec_status, pid); | |
158 | } | |
41efeaec | 159 | |
6dfa5494 LP |
160 | s->main_pid = pid; |
161 | s->main_pid_known = true; | |
162 | ||
df0ff127 | 163 | if (get_process_ppid(pid, &ppid) >= 0 && ppid != getpid_cached()) { |
f2341e0a | 164 | 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 |
165 | s->main_pid_alien = true; |
166 | } else | |
167 | s->main_pid_alien = false; | |
5925dd3c LP |
168 | |
169 | return 0; | |
170 | } | |
171 | ||
3e7a1f50 | 172 | void service_close_socket_fd(Service *s) { |
4f2d528d LP |
173 | assert(s); |
174 | ||
5cc3985e | 175 | /* Undo the effect of service_set_socket_fd(). */ |
4f2d528d | 176 | |
5cc3985e | 177 | s->socket_fd = asynchronous_close(s->socket_fd); |
6cf6bbc2 | 178 | |
5cc3985e LP |
179 | if (UNIT_ISSET(s->accept_socket)) { |
180 | socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket))); | |
181 | unit_ref_unset(&s->accept_socket); | |
182 | } | |
6cf6bbc2 LP |
183 | } |
184 | ||
a6927d7f MO |
185 | static void service_stop_watchdog(Service *s) { |
186 | assert(s); | |
187 | ||
718db961 | 188 | s->watchdog_event_source = sd_event_source_unref(s->watchdog_event_source); |
842129f5 | 189 | s->watchdog_timestamp = DUAL_TIMESTAMP_NULL; |
a6927d7f MO |
190 | } |
191 | ||
2787d83c M |
192 | static usec_t service_get_watchdog_usec(Service *s) { |
193 | assert(s); | |
194 | ||
195 | if (s->watchdog_override_enable) | |
196 | return s->watchdog_override_usec; | |
197 | else | |
198 | return s->watchdog_usec; | |
199 | } | |
200 | ||
842129f5 | 201 | static void service_start_watchdog(Service *s) { |
bb242b7b | 202 | int r; |
2787d83c | 203 | usec_t watchdog_usec; |
bb242b7b MO |
204 | |
205 | assert(s); | |
206 | ||
2787d83c | 207 | watchdog_usec = service_get_watchdog_usec(s); |
4c701096 | 208 | if (IN_SET(watchdog_usec, 0, USEC_INFINITY)) |
bb242b7b MO |
209 | return; |
210 | ||
718db961 | 211 | if (s->watchdog_event_source) { |
2787d83c | 212 | r = sd_event_source_set_time(s->watchdog_event_source, usec_add(s->watchdog_timestamp.monotonic, watchdog_usec)); |
718db961 | 213 | if (r < 0) { |
f2341e0a | 214 | log_unit_warning_errno(UNIT(s), r, "Failed to reset watchdog timer: %m"); |
718db961 LP |
215 | return; |
216 | } | |
217 | ||
842129f5 | 218 | r = sd_event_source_set_enabled(s->watchdog_event_source, SD_EVENT_ONESHOT); |
c4ef3317 | 219 | } else { |
6a0f1f6d LP |
220 | r = sd_event_add_time( |
221 | UNIT(s)->manager->event, | |
222 | &s->watchdog_event_source, | |
223 | CLOCK_MONOTONIC, | |
2787d83c | 224 | usec_add(s->watchdog_timestamp.monotonic, watchdog_usec), 0, |
6a0f1f6d | 225 | service_dispatch_watchdog, s); |
c4ef3317 | 226 | if (r < 0) { |
f2341e0a | 227 | log_unit_warning_errno(UNIT(s), r, "Failed to add watchdog timer: %m"); |
c4ef3317 LP |
228 | return; |
229 | } | |
230 | ||
7dfbe2e3 TG |
231 | (void) sd_event_source_set_description(s->watchdog_event_source, "service-watchdog"); |
232 | ||
c4ef3317 LP |
233 | /* Let's process everything else which might be a sign |
234 | * of living before we consider a service died. */ | |
235 | r = sd_event_source_set_priority(s->watchdog_event_source, SD_EVENT_PRIORITY_IDLE); | |
236 | } | |
718db961 | 237 | |
bb242b7b | 238 | if (r < 0) |
f2341e0a | 239 | log_unit_warning_errno(UNIT(s), r, "Failed to install watchdog timer: %m"); |
bb242b7b MO |
240 | } |
241 | ||
a327431b DB |
242 | static void service_extend_timeout(Service *s, usec_t extend_timeout_usec) { |
243 | assert(s); | |
244 | ||
245 | if (s->timer_event_source) { | |
246 | uint64_t current = 0, extended = 0; | |
247 | int r; | |
248 | ||
249 | if (IN_SET(extend_timeout_usec, 0, USEC_INFINITY)) | |
250 | return; | |
251 | ||
252 | extended = usec_add(now(CLOCK_MONOTONIC), extend_timeout_usec); | |
253 | ||
254 | r = sd_event_source_get_time(s->timer_event_source, ¤t); | |
255 | if (r < 0) | |
256 | log_unit_error_errno(UNIT(s), r, "Failed to retrieve timeout timer: %m"); | |
257 | else if (extended > current) { | |
258 | r = sd_event_source_set_time(s->timer_event_source, extended); | |
259 | if (r < 0) | |
260 | log_unit_warning_errno(UNIT(s), r, "Failed to set timeout timer: %m"); | |
261 | } | |
262 | ||
263 | if (s->watchdog_event_source) { | |
264 | /* extend watchdog if necessary. We've asked for an extended timeout so we | |
265 | * shouldn't expect a watchdog timeout in the interval in between */ | |
266 | r = sd_event_source_get_time(s->watchdog_event_source, ¤t); | |
267 | if (r < 0) { | |
268 | log_unit_error_errno(UNIT(s), r, "Failed to retrieve watchdog timer: %m"); | |
269 | return; | |
270 | } | |
271 | ||
272 | if (extended > current) { | |
273 | r = sd_event_source_set_time(s->watchdog_event_source, extended); | |
274 | if (r < 0) | |
275 | log_unit_warning_errno(UNIT(s), r, "Failed to set watchdog timer: %m"); | |
276 | } | |
277 | } | |
278 | } | |
279 | } | |
280 | ||
a6927d7f MO |
281 | static void service_reset_watchdog(Service *s) { |
282 | assert(s); | |
283 | ||
284 | dual_timestamp_get(&s->watchdog_timestamp); | |
842129f5 | 285 | service_start_watchdog(s); |
a6927d7f MO |
286 | } |
287 | ||
2787d83c M |
288 | static void service_reset_watchdog_timeout(Service *s, usec_t watchdog_override_usec) { |
289 | assert(s); | |
290 | ||
291 | s->watchdog_override_enable = true; | |
292 | s->watchdog_override_usec = watchdog_override_usec; | |
293 | service_reset_watchdog(s); | |
294 | ||
295 | log_unit_debug(UNIT(s), "watchdog_usec="USEC_FMT, s->watchdog_usec); | |
296 | log_unit_debug(UNIT(s), "watchdog_override_usec="USEC_FMT, s->watchdog_override_usec); | |
297 | } | |
298 | ||
a354329f LP |
299 | static void service_fd_store_unlink(ServiceFDStore *fs) { |
300 | ||
301 | if (!fs) | |
302 | return; | |
303 | ||
304 | if (fs->service) { | |
305 | assert(fs->service->n_fd_store > 0); | |
306 | LIST_REMOVE(fd_store, fs->service->fd_store, fs); | |
307 | fs->service->n_fd_store--; | |
308 | } | |
309 | ||
310 | if (fs->event_source) { | |
311 | sd_event_source_set_enabled(fs->event_source, SD_EVENT_OFF); | |
312 | sd_event_source_unref(fs->event_source); | |
313 | } | |
314 | ||
8dd4c05b | 315 | free(fs->fdname); |
a354329f LP |
316 | safe_close(fs->fd); |
317 | free(fs); | |
318 | } | |
319 | ||
f0bfbfac ZJS |
320 | static void service_release_fd_store(Service *s) { |
321 | assert(s); | |
322 | ||
7eb2a8a1 LP |
323 | if (s->n_keep_fd_store > 0) |
324 | return; | |
325 | ||
f0bfbfac ZJS |
326 | log_unit_debug(UNIT(s), "Releasing all stored fds"); |
327 | while (s->fd_store) | |
328 | service_fd_store_unlink(s->fd_store); | |
329 | ||
330 | assert(s->n_fd_store == 0); | |
331 | } | |
332 | ||
7eb2a8a1 | 333 | static void service_release_resources(Unit *u) { |
a354329f LP |
334 | Service *s = SERVICE(u); |
335 | ||
336 | assert(s); | |
337 | ||
a34ceba6 | 338 | if (!s->fd_store && s->stdin_fd < 0 && s->stdout_fd < 0 && s->stderr_fd < 0) |
a354329f LP |
339 | return; |
340 | ||
f0bfbfac | 341 | log_unit_debug(u, "Releasing resources."); |
a354329f | 342 | |
a34ceba6 LP |
343 | s->stdin_fd = safe_close(s->stdin_fd); |
344 | s->stdout_fd = safe_close(s->stdout_fd); | |
345 | s->stderr_fd = safe_close(s->stderr_fd); | |
346 | ||
7eb2a8a1 | 347 | service_release_fd_store(s); |
a354329f LP |
348 | } |
349 | ||
87f0e418 LP |
350 | static void service_done(Unit *u) { |
351 | Service *s = SERVICE(u); | |
44d8db9e LP |
352 | |
353 | assert(s); | |
354 | ||
a1e58e8e LP |
355 | s->pid_file = mfree(s->pid_file); |
356 | s->status_text = mfree(s->status_text); | |
efe6e7d3 | 357 | |
e8a565cb | 358 | s->exec_runtime = exec_runtime_unref(s->exec_runtime, false); |
e537352b | 359 | exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); |
44d8db9e | 360 | s->control_command = NULL; |
867b3b7d | 361 | s->main_command = NULL; |
44d8db9e | 362 | |
29206d46 LP |
363 | dynamic_creds_unref(&s->dynamic_creds); |
364 | ||
37520c1b LP |
365 | exit_status_set_free(&s->restart_prevent_status); |
366 | exit_status_set_free(&s->restart_force_status); | |
367 | exit_status_set_free(&s->success_status); | |
96342de6 | 368 | |
44d8db9e LP |
369 | /* This will leak a process, but at least no memory or any of |
370 | * our resources */ | |
5e94833f LP |
371 | service_unwatch_main_pid(s); |
372 | service_unwatch_control_pid(s); | |
3e52541e | 373 | service_unwatch_pid_file(s); |
44d8db9e | 374 | |
05e343b7 | 375 | if (s->bus_name) { |
ac155bb8 | 376 | unit_unwatch_bus_name(u, s->bus_name); |
a1e58e8e | 377 | s->bus_name = mfree(s->bus_name); |
05e343b7 LP |
378 | } |
379 | ||
d8ccf5fd DM |
380 | s->bus_name_owner = mfree(s->bus_name_owner); |
381 | ||
064c5938 ZJS |
382 | s->usb_function_descriptors = mfree(s->usb_function_descriptors); |
383 | s->usb_function_strings = mfree(s->usb_function_strings); | |
384 | ||
4f2d528d | 385 | service_close_socket_fd(s); |
9d565427 | 386 | s->peer = socket_peer_unref(s->peer); |
4f2d528d | 387 | |
57020a3a | 388 | unit_ref_unset(&s->accept_socket); |
f976f3f6 | 389 | |
bb242b7b MO |
390 | service_stop_watchdog(s); |
391 | ||
718db961 | 392 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
5686391b | 393 | s->exec_fd_event_source = sd_event_source_unref(s->exec_fd_event_source); |
a354329f | 394 | |
7eb2a8a1 | 395 | service_release_resources(u); |
718db961 LP |
396 | } |
397 | ||
2339fc93 LP |
398 | static int on_fd_store_io(sd_event_source *e, int fd, uint32_t revents, void *userdata) { |
399 | ServiceFDStore *fs = userdata; | |
400 | ||
401 | assert(e); | |
402 | assert(fs); | |
403 | ||
404 | /* If we get either EPOLLHUP or EPOLLERR, it's time to remove this entry from the fd store */ | |
16f70d63 ZJS |
405 | log_unit_debug(UNIT(fs->service), |
406 | "Received %s on stored fd %d (%s), closing.", | |
407 | revents & EPOLLERR ? "EPOLLERR" : "EPOLLHUP", | |
408 | fs->fd, strna(fs->fdname)); | |
2339fc93 LP |
409 | service_fd_store_unlink(fs); |
410 | return 0; | |
411 | } | |
412 | ||
8dd4c05b | 413 | static int service_add_fd_store(Service *s, int fd, const char *name) { |
2339fc93 LP |
414 | ServiceFDStore *fs; |
415 | int r; | |
416 | ||
9021ff17 ZJS |
417 | /* fd is always consumed if we return >= 0 */ |
418 | ||
2339fc93 LP |
419 | assert(s); |
420 | assert(fd >= 0); | |
421 | ||
422 | if (s->n_fd_store >= s->n_fd_store_max) | |
b0924635 ZJS |
423 | return -EXFULL; /* Our store is full. |
424 | * Use this errno rather than E[NM]FILE to distinguish from | |
425 | * the case where systemd itself hits the file limit. */ | |
2339fc93 LP |
426 | |
427 | LIST_FOREACH(fd_store, fs, s->fd_store) { | |
428 | r = same_fd(fs->fd, fd); | |
429 | if (r < 0) | |
430 | return r; | |
431 | if (r > 0) { | |
2339fc93 | 432 | safe_close(fd); |
9021ff17 | 433 | return 0; /* fd already included */ |
2339fc93 LP |
434 | } |
435 | } | |
436 | ||
437 | fs = new0(ServiceFDStore, 1); | |
438 | if (!fs) | |
439 | return -ENOMEM; | |
440 | ||
441 | fs->fd = fd; | |
442 | fs->service = s; | |
8dd4c05b | 443 | fs->fdname = strdup(name ?: "stored"); |
17dec0f7 | 444 | if (!fs->fdname) { |
445 | free(fs); | |
8dd4c05b | 446 | return -ENOMEM; |
17dec0f7 | 447 | } |
2339fc93 LP |
448 | |
449 | r = sd_event_add_io(UNIT(s)->manager->event, &fs->event_source, fd, 0, on_fd_store_io, fs); | |
3ceb72e5 | 450 | if (r < 0 && r != -EPERM) { /* EPERM indicates fds that aren't pollable, which is OK */ |
8dd4c05b | 451 | free(fs->fdname); |
2339fc93 LP |
452 | free(fs); |
453 | return r; | |
3ceb72e5 LP |
454 | } else if (r >= 0) |
455 | (void) sd_event_source_set_description(fs->event_source, "service-fd-store"); | |
7dfbe2e3 | 456 | |
2339fc93 LP |
457 | LIST_PREPEND(fd_store, s->fd_store, fs); |
458 | s->n_fd_store++; | |
459 | ||
9021ff17 | 460 | return 1; /* fd newly stored */ |
2339fc93 LP |
461 | } |
462 | ||
8dd4c05b | 463 | static int service_add_fd_store_set(Service *s, FDSet *fds, const char *name) { |
2339fc93 LP |
464 | int r; |
465 | ||
466 | assert(s); | |
467 | ||
b0924635 | 468 | while (fdset_size(fds) > 0) { |
2339fc93 LP |
469 | _cleanup_close_ int fd = -1; |
470 | ||
471 | fd = fdset_steal_first(fds); | |
472 | if (fd < 0) | |
473 | break; | |
474 | ||
8dd4c05b | 475 | r = service_add_fd_store(s, fd, name); |
b0924635 ZJS |
476 | if (r == -EXFULL) |
477 | return log_unit_warning_errno(UNIT(s), r, | |
478 | "Cannot store more fds than FileDescriptorStoreMax=%u, closing remaining.", | |
479 | s->n_fd_store_max); | |
2339fc93 | 480 | if (r < 0) |
b0924635 | 481 | return log_unit_error_errno(UNIT(s), r, "Failed to add fd to store: %m"); |
9021ff17 | 482 | if (r > 0) |
16f70d63 | 483 | log_unit_debug(UNIT(s), "Added fd %u (%s) to fd store.", fd, strna(name)); |
9021ff17 | 484 | fd = -1; |
2339fc93 LP |
485 | } |
486 | ||
2339fc93 LP |
487 | return 0; |
488 | } | |
489 | ||
e78ee06d LP |
490 | static void service_remove_fd_store(Service *s, const char *name) { |
491 | ServiceFDStore *fs, *n; | |
492 | ||
493 | assert(s); | |
494 | assert(name); | |
495 | ||
496 | LIST_FOREACH_SAFE(fd_store, fs, n, s->fd_store) { | |
497 | if (!streq(fs->fdname, name)) | |
498 | continue; | |
499 | ||
500 | log_unit_debug(UNIT(s), "Got explicit request to remove fd %i (%s), closing.", fs->fd, name); | |
501 | service_fd_store_unlink(fs); | |
502 | } | |
503 | } | |
504 | ||
718db961 LP |
505 | static int service_arm_timer(Service *s, usec_t usec) { |
506 | int r; | |
507 | ||
508 | assert(s); | |
509 | ||
718db961 | 510 | if (s->timer_event_source) { |
36c16a7c | 511 | r = sd_event_source_set_time(s->timer_event_source, usec); |
718db961 LP |
512 | if (r < 0) |
513 | return r; | |
514 | ||
515 | return sd_event_source_set_enabled(s->timer_event_source, SD_EVENT_ONESHOT); | |
516 | } | |
517 | ||
36c16a7c LP |
518 | if (usec == USEC_INFINITY) |
519 | return 0; | |
520 | ||
7dfbe2e3 | 521 | r = sd_event_add_time( |
6a0f1f6d LP |
522 | UNIT(s)->manager->event, |
523 | &s->timer_event_source, | |
524 | CLOCK_MONOTONIC, | |
36c16a7c | 525 | usec, 0, |
6a0f1f6d | 526 | service_dispatch_timer, s); |
7dfbe2e3 TG |
527 | if (r < 0) |
528 | return r; | |
529 | ||
530 | (void) sd_event_source_set_description(s->timer_event_source, "service-timer"); | |
531 | ||
532 | return 0; | |
44d8db9e LP |
533 | } |
534 | ||
243b1432 LP |
535 | static int service_verify(Service *s) { |
536 | assert(s); | |
537 | ||
1124fe6f | 538 | if (UNIT(s)->load_state != UNIT_LOADED) |
243b1432 LP |
539 | return 0; |
540 | ||
96fb8242 | 541 | if (!s->exec_command[SERVICE_EXEC_START] && !s->exec_command[SERVICE_EXEC_STOP]) { |
f2341e0a | 542 | log_unit_error(UNIT(s), "Service lacks both ExecStart= and ExecStop= setting. Refusing."); |
6f40aa45 | 543 | return -ENOEXEC; |
243b1432 LP |
544 | } |
545 | ||
96fb8242 | 546 | if (s->type != SERVICE_ONESHOT && !s->exec_command[SERVICE_EXEC_START]) { |
f2341e0a | 547 | log_unit_error(UNIT(s), "Service has no ExecStart= setting, which is only allowed for Type=oneshot services. Refusing."); |
6f40aa45 | 548 | return -ENOEXEC; |
96fb8242 LP |
549 | } |
550 | ||
551 | if (!s->remain_after_exit && !s->exec_command[SERVICE_EXEC_START]) { | |
f2341e0a | 552 | log_unit_error(UNIT(s), "Service has no ExecStart= setting, which is only allowed for RemainAfterExit=yes services. Refusing."); |
6f40aa45 | 553 | return -ENOEXEC; |
96fb8242 LP |
554 | } |
555 | ||
556 | if (s->type != SERVICE_ONESHOT && s->exec_command[SERVICE_EXEC_START]->command_next) { | |
f2341e0a | 557 | log_unit_error(UNIT(s), "Service has more than one ExecStart= setting, which is only allowed for Type=oneshot services. Refusing."); |
6f40aa45 | 558 | return -ENOEXEC; |
6cf6bbc2 LP |
559 | } |
560 | ||
b0693d30 | 561 | if (s->type == SERVICE_ONESHOT && s->restart != SERVICE_RESTART_NO) { |
f2341e0a | 562 | log_unit_error(UNIT(s), "Service has Restart= setting other than no, which isn't allowed for Type=oneshot services. Refusing."); |
6f40aa45 | 563 | return -ENOEXEC; |
37520c1b LP |
564 | } |
565 | ||
55ebf98c | 566 | if (s->type == SERVICE_ONESHOT && !exit_status_set_is_empty(&s->restart_force_status)) { |
f2341e0a | 567 | log_unit_error(UNIT(s), "Service has RestartForceStatus= set, which isn't allowed for Type=oneshot services. Refusing."); |
6f40aa45 | 568 | return -ENOEXEC; |
b0693d30 MW |
569 | } |
570 | ||
05e343b7 | 571 | if (s->type == SERVICE_DBUS && !s->bus_name) { |
f2341e0a | 572 | log_unit_error(UNIT(s), "Service is of type D-Bus but no D-Bus service name has been specified. Refusing."); |
6f40aa45 | 573 | return -ENOEXEC; |
4d0e5dbd LP |
574 | } |
575 | ||
7e2668c6 | 576 | if (s->bus_name && s->type != SERVICE_DBUS) |
f2341e0a | 577 | log_unit_warning(UNIT(s), "Service has a D-Bus service name specified, but is not of type dbus. Ignoring."); |
7e2668c6 | 578 | |
3742095b | 579 | if (s->exec_context.pam_name && !IN_SET(s->kill_context.kill_mode, KILL_CONTROL_GROUP, KILL_MIXED)) { |
f2341e0a | 580 | log_unit_error(UNIT(s), "Service has PAM enabled. Kill mode must be set to 'control-group' or 'mixed'. Refusing."); |
6f40aa45 | 581 | return -ENOEXEC; |
05e343b7 LP |
582 | } |
583 | ||
6b7e5923 PS |
584 | if (s->usb_function_descriptors && !s->usb_function_strings) |
585 | log_unit_warning(UNIT(s), "Service has USBFunctionDescriptors= setting, but no USBFunctionStrings=. Ignoring."); | |
586 | ||
587 | if (!s->usb_function_descriptors && s->usb_function_strings) | |
588 | log_unit_warning(UNIT(s), "Service has USBFunctionStrings= setting, but no USBFunctionDescriptors=. Ignoring."); | |
589 | ||
36c16a7c LP |
590 | if (s->runtime_max_usec != USEC_INFINITY && s->type == SERVICE_ONESHOT) |
591 | log_unit_warning(UNIT(s), "MaxRuntimeSec= has no effect in combination with Type=oneshot. Ignoring."); | |
592 | ||
243b1432 LP |
593 | return 0; |
594 | } | |
595 | ||
a40eb732 LP |
596 | static int service_add_default_dependencies(Service *s) { |
597 | int r; | |
598 | ||
599 | assert(s); | |
600 | ||
45f06b34 LP |
601 | if (!UNIT(s)->default_dependencies) |
602 | return 0; | |
603 | ||
a40eb732 LP |
604 | /* Add a number of automatic dependencies useful for the |
605 | * majority of services. */ | |
606 | ||
463d0d15 | 607 | if (MANAGER_IS_SYSTEM(UNIT(s)->manager)) { |
cb4c247d LP |
608 | /* First, pull in the really early boot stuff, and |
609 | * require it, so that we fail if we can't acquire | |
610 | * it. */ | |
611 | ||
5a724170 | 612 | r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
cb4c247d LP |
613 | if (r < 0) |
614 | return r; | |
615 | } else { | |
616 | ||
617 | /* In the --user instance there's no sysinit.target, | |
618 | * in that case require basic.target instead. */ | |
619 | ||
35d8c19a | 620 | r = unit_add_dependency_by_name(UNIT(s), UNIT_REQUIRES, SPECIAL_BASIC_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
cb4c247d LP |
621 | if (r < 0) |
622 | return r; | |
623 | } | |
624 | ||
625 | /* Second, if the rest of the base system is in the same | |
626 | * transaction, order us after it, but do not pull it in or | |
627 | * even require it. */ | |
35d8c19a | 628 | r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_BASIC_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
fccd44ec KS |
629 | if (r < 0) |
630 | return r; | |
a40eb732 | 631 | |
cb4c247d | 632 | /* Third, add us in for normal shutdown. */ |
5a724170 | 633 | return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
a40eb732 LP |
634 | } |
635 | ||
4dfc092a LP |
636 | static void service_fix_output(Service *s) { |
637 | assert(s); | |
638 | ||
08f3be7a LP |
639 | /* If nothing has been explicitly configured, patch default output in. If input is socket/tty we avoid this |
640 | * however, since in that case we want output to default to the same place as we read input from. */ | |
4dfc092a LP |
641 | |
642 | if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT && | |
643 | s->exec_context.std_output == EXEC_OUTPUT_INHERIT && | |
644 | s->exec_context.std_input == EXEC_INPUT_NULL) | |
1124fe6f | 645 | s->exec_context.std_error = UNIT(s)->manager->default_std_error; |
4dfc092a LP |
646 | |
647 | if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT && | |
648 | s->exec_context.std_input == EXEC_INPUT_NULL) | |
1124fe6f | 649 | s->exec_context.std_output = UNIT(s)->manager->default_std_output; |
08f3be7a LP |
650 | |
651 | if (s->exec_context.std_input == EXEC_INPUT_NULL && | |
652 | s->exec_context.stdin_data_size > 0) | |
653 | s->exec_context.std_input = EXEC_INPUT_DATA; | |
4dfc092a LP |
654 | } |
655 | ||
45f06b34 LP |
656 | static int service_setup_bus_name(Service *s) { |
657 | int r; | |
658 | ||
659 | assert(s); | |
660 | ||
661 | if (!s->bus_name) | |
662 | return 0; | |
663 | ||
35d8c19a | 664 | r = unit_add_dependency_by_name(UNIT(s), UNIT_REQUIRES, SPECIAL_DBUS_SOCKET, true, UNIT_DEPENDENCY_FILE); |
222953e8 DR |
665 | if (r < 0) |
666 | return log_unit_error_errno(UNIT(s), r, "Failed to add dependency on " SPECIAL_DBUS_SOCKET ": %m"); | |
45f06b34 | 667 | |
a132bef0 | 668 | /* We always want to be ordered against dbus.socket if both are in the transaction. */ |
35d8c19a | 669 | r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_DBUS_SOCKET, true, UNIT_DEPENDENCY_FILE); |
45f06b34 | 670 | if (r < 0) |
92bed462 | 671 | return log_unit_error_errno(UNIT(s), r, "Failed to add dependency on " SPECIAL_DBUS_SOCKET ": %m"); |
45f06b34 LP |
672 | |
673 | r = unit_watch_bus_name(UNIT(s), s->bus_name); | |
674 | if (r == -EEXIST) | |
675 | return log_unit_error_errno(UNIT(s), r, "Two services allocated for the same bus name %s, refusing operation.", s->bus_name); | |
676 | if (r < 0) | |
677 | return log_unit_error_errno(UNIT(s), r, "Cannot watch bus name %s: %m", s->bus_name); | |
678 | ||
679 | return 0; | |
680 | } | |
681 | ||
8545f7ce LP |
682 | static int service_add_extras(Service *s) { |
683 | int r; | |
684 | ||
685 | assert(s); | |
686 | ||
687 | if (s->type == _SERVICE_TYPE_INVALID) { | |
688 | /* Figure out a type automatically */ | |
689 | if (s->bus_name) | |
690 | s->type = SERVICE_DBUS; | |
691 | else if (s->exec_command[SERVICE_EXEC_START]) | |
692 | s->type = SERVICE_SIMPLE; | |
693 | else | |
694 | s->type = SERVICE_ONESHOT; | |
695 | } | |
696 | ||
697 | /* Oneshot services have disabled start timeout by default */ | |
698 | if (s->type == SERVICE_ONESHOT && !s->start_timeout_defined) | |
36c16a7c | 699 | s->timeout_start_usec = USEC_INFINITY; |
8545f7ce LP |
700 | |
701 | service_fix_output(s); | |
702 | ||
703 | r = unit_patch_contexts(UNIT(s)); | |
704 | if (r < 0) | |
705 | return r; | |
706 | ||
707 | r = unit_add_exec_dependencies(UNIT(s), &s->exec_context); | |
708 | if (r < 0) | |
709 | return r; | |
710 | ||
d79200e2 | 711 | r = unit_set_default_slice(UNIT(s)); |
8545f7ce LP |
712 | if (r < 0) |
713 | return r; | |
714 | ||
4330dc03 AJ |
715 | /* If the service needs the notify socket, let's enable it automatically. */ |
716 | if (s->notify_access == NOTIFY_NONE && | |
717 | (s->type == SERVICE_NOTIFY || s->watchdog_usec > 0 || s->n_fd_store_max > 0)) | |
8545f7ce LP |
718 | s->notify_access = NOTIFY_MAIN; |
719 | ||
45f06b34 LP |
720 | r = service_add_default_dependencies(s); |
721 | if (r < 0) | |
722 | return r; | |
8545f7ce | 723 | |
45f06b34 LP |
724 | r = service_setup_bus_name(s); |
725 | if (r < 0) | |
726 | return r; | |
8545f7ce LP |
727 | |
728 | return 0; | |
729 | } | |
730 | ||
e537352b | 731 | static int service_load(Unit *u) { |
e537352b | 732 | Service *s = SERVICE(u); |
8bb2d17d | 733 | int r; |
e537352b LP |
734 | |
735 | assert(s); | |
1e2e8133 | 736 | |
5cb5a6ff | 737 | /* Load a .service file */ |
c2756a68 LP |
738 | r = unit_load_fragment(u); |
739 | if (r < 0) | |
5cb5a6ff LP |
740 | return r; |
741 | ||
23a177ef | 742 | /* Still nothing found? Then let's give up */ |
ac155bb8 | 743 | if (u->load_state == UNIT_STUB) |
23a177ef | 744 | return -ENOENT; |
034c6ed7 | 745 | |
23a177ef | 746 | /* This is a new unit? Then let's add in some extras */ |
ac155bb8 | 747 | if (u->load_state == UNIT_LOADED) { |
c2756a68 LP |
748 | |
749 | /* We were able to load something, then let's add in | |
750 | * the dropin directories. */ | |
751 | r = unit_load_dropin(u); | |
752 | if (r < 0) | |
753 | return r; | |
754 | ||
8545f7ce LP |
755 | /* This is a new unit? Then let's add in some |
756 | * extras */ | |
757 | r = service_add_extras(s); | |
598459ce LP |
758 | if (r < 0) |
759 | return r; | |
8e274523 LP |
760 | } |
761 | ||
243b1432 | 762 | return service_verify(s); |
034c6ed7 LP |
763 | } |
764 | ||
87f0e418 | 765 | static void service_dump(Unit *u, FILE *f, const char *prefix) { |
f2e18ef1 YW |
766 | char buf_restart[FORMAT_TIMESPAN_MAX], buf_start[FORMAT_TIMESPAN_MAX], buf_stop[FORMAT_TIMESPAN_MAX]; |
767 | char buf_runtime[FORMAT_TIMESPAN_MAX], buf_watchdog[FORMAT_TIMESPAN_MAX]; | |
5cb5a6ff | 768 | ServiceExecCommand c; |
87f0e418 | 769 | Service *s = SERVICE(u); |
47be870b | 770 | const char *prefix2; |
5cb5a6ff LP |
771 | |
772 | assert(s); | |
773 | ||
4c940960 | 774 | prefix = strempty(prefix); |
63c372cb | 775 | prefix2 = strjoina(prefix, "\t"); |
44d8db9e | 776 | |
5cb5a6ff | 777 | fprintf(f, |
81a2b7ce | 778 | "%sService State: %s\n" |
f42806df LP |
779 | "%sResult: %s\n" |
780 | "%sReload Result: %s\n" | |
81a2b7ce | 781 | "%sPermissionsStartOnly: %s\n" |
8e274523 | 782 | "%sRootDirectoryStartOnly: %s\n" |
02ee865a | 783 | "%sRemainAfterExit: %s\n" |
3185a36b | 784 | "%sGuessMainPID: %s\n" |
c952c6ec | 785 | "%sType: %s\n" |
2cf3143a | 786 | "%sRestart: %s\n" |
308d72dc LP |
787 | "%sNotifyAccess: %s\n" |
788 | "%sNotifyState: %s\n", | |
81a2b7ce | 789 | prefix, service_state_to_string(s->state), |
f42806df LP |
790 | prefix, service_result_to_string(s->result), |
791 | prefix, service_result_to_string(s->reload_result), | |
81a2b7ce | 792 | prefix, yes_no(s->permissions_start_only), |
8e274523 | 793 | prefix, yes_no(s->root_directory_start_only), |
02ee865a | 794 | prefix, yes_no(s->remain_after_exit), |
3185a36b | 795 | prefix, yes_no(s->guess_main_pid), |
c952c6ec | 796 | prefix, service_type_to_string(s->type), |
2cf3143a | 797 | prefix, service_restart_to_string(s->restart), |
308d72dc LP |
798 | prefix, notify_access_to_string(s->notify_access), |
799 | prefix, notify_state_to_string(s->notify_state)); | |
5cb5a6ff | 800 | |
70123e68 LP |
801 | if (s->control_pid > 0) |
802 | fprintf(f, | |
ccd06097 ZJS |
803 | "%sControl PID: "PID_FMT"\n", |
804 | prefix, s->control_pid); | |
70123e68 LP |
805 | |
806 | if (s->main_pid > 0) | |
807 | fprintf(f, | |
ccd06097 | 808 | "%sMain PID: "PID_FMT"\n" |
6dfa5494 LP |
809 | "%sMain PID Known: %s\n" |
810 | "%sMain PID Alien: %s\n", | |
ccd06097 | 811 | prefix, s->main_pid, |
6dfa5494 LP |
812 | prefix, yes_no(s->main_pid_known), |
813 | prefix, yes_no(s->main_pid_alien)); | |
70123e68 | 814 | |
034c6ed7 LP |
815 | if (s->pid_file) |
816 | fprintf(f, | |
817 | "%sPIDFile: %s\n", | |
818 | prefix, s->pid_file); | |
819 | ||
05e343b7 LP |
820 | if (s->bus_name) |
821 | fprintf(f, | |
822 | "%sBusName: %s\n" | |
823 | "%sBus Name Good: %s\n", | |
824 | prefix, s->bus_name, | |
825 | prefix, yes_no(s->bus_name_good)); | |
826 | ||
9dfb64f8 ZJS |
827 | if (UNIT_ISSET(s->accept_socket)) |
828 | fprintf(f, | |
829 | "%sAccept Socket: %s\n", | |
830 | prefix, UNIT_DEREF(s->accept_socket)->id); | |
831 | ||
c9d41699 YW |
832 | fprintf(f, |
833 | "%sRestartSec: %s\n" | |
834 | "%sTimeoutStartSec: %s\n" | |
835 | "%sTimeoutStopSec: %s\n" | |
836 | "%sRuntimeMaxSec: %s\n" | |
837 | "%sWatchdogSec: %s\n", | |
838 | prefix, format_timespan(buf_restart, sizeof(buf_restart), s->restart_usec, USEC_PER_SEC), | |
839 | prefix, format_timespan(buf_start, sizeof(buf_start), s->timeout_start_usec, USEC_PER_SEC), | |
840 | prefix, format_timespan(buf_stop, sizeof(buf_stop), s->timeout_stop_usec, USEC_PER_SEC), | |
841 | prefix, format_timespan(buf_runtime, sizeof(buf_runtime), s->runtime_max_usec, USEC_PER_SEC), | |
842 | prefix, format_timespan(buf_watchdog, sizeof(buf_watchdog), s->watchdog_usec, USEC_PER_SEC)); | |
843 | ||
4819ff03 | 844 | kill_context_dump(&s->kill_context, f, prefix); |
5cb5a6ff LP |
845 | exec_context_dump(&s->exec_context, f, prefix); |
846 | ||
e537352b | 847 | for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) { |
5cb5a6ff | 848 | |
44d8db9e LP |
849 | if (!s->exec_command[c]) |
850 | continue; | |
851 | ||
40d50879 | 852 | fprintf(f, "%s-> %s:\n", |
94f04347 | 853 | prefix, service_exec_command_to_string(c)); |
44d8db9e LP |
854 | |
855 | exec_command_dump_list(s->exec_command[c], f, prefix2); | |
5cb5a6ff | 856 | } |
44d8db9e | 857 | |
8c47c732 LP |
858 | if (s->status_text) |
859 | fprintf(f, "%sStatus Text: %s\n", | |
860 | prefix, s->status_text); | |
a354329f | 861 | |
ece174c5 | 862 | if (s->n_fd_store_max > 0) |
a354329f LP |
863 | fprintf(f, |
864 | "%sFile Descriptor Store Max: %u\n" | |
da6053d0 | 865 | "%sFile Descriptor Store Current: %zu\n", |
a354329f LP |
866 | prefix, s->n_fd_store_max, |
867 | prefix, s->n_fd_store); | |
18f573aa LP |
868 | |
869 | cgroup_context_dump(&s->cgroup_context, f, prefix); | |
5cb5a6ff LP |
870 | } |
871 | ||
db256aab LP |
872 | static int service_is_suitable_main_pid(Service *s, pid_t pid, int prio) { |
873 | Unit *owner; | |
874 | ||
875 | assert(s); | |
876 | assert(pid_is_valid(pid)); | |
877 | ||
878 | /* Checks whether the specified PID is suitable as main PID for this service. returns negative if not, 0 if the | |
879 | * PID is questionnable but should be accepted if the source of configuration is trusted. > 0 if the PID is | |
880 | * good */ | |
881 | ||
882 | if (pid == getpid_cached() || pid == 1) { | |
883 | log_unit_full(UNIT(s), prio, 0, "New main PID "PID_FMT" is the manager, refusing.", pid); | |
884 | return -EPERM; | |
885 | } | |
886 | ||
887 | if (pid == s->control_pid) { | |
888 | log_unit_full(UNIT(s), prio, 0, "New main PID "PID_FMT" is the control process, refusing.", pid); | |
889 | return -EPERM; | |
890 | } | |
891 | ||
892 | if (!pid_is_alive(pid)) { | |
893 | log_unit_full(UNIT(s), prio, 0, "New main PID "PID_FMT" does not exist or is a zombie.", pid); | |
894 | return -ESRCH; | |
895 | } | |
896 | ||
897 | owner = manager_get_unit_by_pid(UNIT(s)->manager, pid); | |
898 | if (owner == UNIT(s)) { | |
899 | log_unit_debug(UNIT(s), "New main PID "PID_FMT" belongs to service, we are happy.", pid); | |
900 | return 1; /* Yay, it's definitely a good PID */ | |
901 | } | |
902 | ||
903 | return 0; /* Hmm it's a suspicious PID, let's accept it if configuration source is trusted */ | |
904 | } | |
905 | ||
c5419d42 | 906 | static int service_load_pid_file(Service *s, bool may_warn) { |
db256aab | 907 | char procfs[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; |
73969ab6 | 908 | bool questionable_pid_file = false; |
7fd1b19b | 909 | _cleanup_free_ char *k = NULL; |
db256aab LP |
910 | _cleanup_close_ int fd = -1; |
911 | int r, prio; | |
5925dd3c | 912 | pid_t pid; |
034c6ed7 LP |
913 | |
914 | assert(s); | |
915 | ||
034c6ed7 | 916 | if (!s->pid_file) |
13230d5d | 917 | return -ENOENT; |
034c6ed7 | 918 | |
db256aab LP |
919 | prio = may_warn ? LOG_INFO : LOG_DEBUG; |
920 | ||
921 | fd = chase_symlinks(s->pid_file, NULL, CHASE_OPEN|CHASE_SAFE, NULL); | |
73969ab6 LP |
922 | if (fd == -EPERM) { |
923 | log_unit_full(UNIT(s), LOG_DEBUG, fd, "Permission denied while opening PID file or potentially unsafe symlink chain, will now retry with relaxed checks: %s", s->pid_file); | |
924 | ||
925 | questionable_pid_file = true; | |
926 | ||
927 | fd = chase_symlinks(s->pid_file, NULL, CHASE_OPEN, NULL); | |
928 | } | |
db256aab LP |
929 | if (fd < 0) |
930 | return log_unit_full(UNIT(s), prio, fd, "Can't open PID file %s (yet?) after %s: %m", s->pid_file, service_state_to_string(s->state)); | |
931 | ||
932 | /* Let's read the PID file now that we chased it down. But we need to convert the O_PATH fd chase_symlinks() returned us into a proper fd first. */ | |
933 | xsprintf(procfs, "/proc/self/fd/%i", fd); | |
934 | r = read_one_line_file(procfs, &k); | |
935 | if (r < 0) | |
936 | return log_unit_error_errno(UNIT(s), r, "Can't convert PID files %s O_PATH file descriptor to proper file descriptor: %m", s->pid_file); | |
034c6ed7 | 937 | |
5925dd3c | 938 | r = parse_pid(k, &pid); |
db256aab LP |
939 | if (r < 0) |
940 | return log_unit_full(UNIT(s), prio, r, "Failed to parse PID from file %s: %m", s->pid_file); | |
941 | ||
942 | if (s->main_pid_known && pid == s->main_pid) | |
943 | return 0; | |
944 | ||
945 | r = service_is_suitable_main_pid(s, pid, prio); | |
946 | if (r < 0) | |
5925dd3c | 947 | return r; |
db256aab LP |
948 | if (r == 0) { |
949 | struct stat st; | |
406eaf93 | 950 | |
73969ab6 LP |
951 | if (questionable_pid_file) { |
952 | log_unit_error(UNIT(s), "Refusing to accept PID outside of service control group, acquired through unsafe symlink chain: %s", s->pid_file); | |
953 | return -EPERM; | |
954 | } | |
955 | ||
db256aab LP |
956 | /* Hmm, it's not clear if the new main PID is safe. Let's allow this if the PID file is owned by root */ |
957 | ||
958 | if (fstat(fd, &st) < 0) | |
959 | return log_unit_error_errno(UNIT(s), errno, "Failed to fstat() PID file O_PATH fd: %m"); | |
960 | ||
961 | if (st.st_uid != 0) { | |
962 | log_unit_error(UNIT(s), "New main PID "PID_FMT" does not belong to service, and PID file is not owned by root. Refusing.", pid); | |
963 | return -EPERM; | |
964 | } | |
965 | ||
966 | log_unit_debug(UNIT(s), "New main PID "PID_FMT" does not belong to service, but we'll accept it since PID file is owned by root.", pid); | |
e10c9985 YS |
967 | } |
968 | ||
db01f8b3 | 969 | if (s->main_pid_known) { |
f2341e0a | 970 | log_unit_debug(UNIT(s), "Main PID changing: "PID_FMT" -> "PID_FMT, s->main_pid, pid); |
8bb2d17d | 971 | |
db01f8b3 MS |
972 | service_unwatch_main_pid(s); |
973 | s->main_pid_known = false; | |
3a111838 | 974 | } else |
f2341e0a | 975 | log_unit_debug(UNIT(s), "Main PID loaded: "PID_FMT, pid); |
db01f8b3 | 976 | |
117dcc57 ZJS |
977 | r = service_set_main_pid(s, pid); |
978 | if (r < 0) | |
16f6025e LP |
979 | return r; |
980 | ||
117dcc57 | 981 | r = unit_watch_pid(UNIT(s), pid); |
e8b509d3 LP |
982 | if (r < 0) /* FIXME: we need to do something here */ |
983 | return log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" for service: %m", pid); | |
034c6ed7 | 984 | |
db256aab | 985 | return 1; |
034c6ed7 LP |
986 | } |
987 | ||
783e05d6 | 988 | static void service_search_main_pid(Service *s) { |
efdb0237 | 989 | pid_t pid = 0; |
4fbf50b3 LP |
990 | int r; |
991 | ||
992 | assert(s); | |
993 | ||
3185a36b LP |
994 | /* If we know it anyway, don't ever fallback to unreliable |
995 | * heuristics */ | |
4fbf50b3 | 996 | if (s->main_pid_known) |
783e05d6 | 997 | return; |
4fbf50b3 | 998 | |
3185a36b | 999 | if (!s->guess_main_pid) |
783e05d6 | 1000 | return; |
3185a36b | 1001 | |
4fbf50b3 LP |
1002 | assert(s->main_pid <= 0); |
1003 | ||
783e05d6 ZJS |
1004 | if (unit_search_main_pid(UNIT(s), &pid) < 0) |
1005 | return; | |
4fbf50b3 | 1006 | |
f2341e0a | 1007 | log_unit_debug(UNIT(s), "Main PID guessed: "PID_FMT, pid); |
783e05d6 ZJS |
1008 | if (service_set_main_pid(s, pid) < 0) |
1009 | return; | |
4fbf50b3 | 1010 | |
117dcc57 | 1011 | r = unit_watch_pid(UNIT(s), pid); |
783e05d6 | 1012 | if (r < 0) |
4fbf50b3 | 1013 | /* FIXME: we need to do something here */ |
f2341e0a | 1014 | log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" from: %m", pid); |
4fbf50b3 LP |
1015 | } |
1016 | ||
034c6ed7 LP |
1017 | static void service_set_state(Service *s, ServiceState state) { |
1018 | ServiceState old_state; | |
e056b01d | 1019 | const UnitActiveState *table; |
842129f5 | 1020 | |
5cb5a6ff LP |
1021 | assert(s); |
1022 | ||
e056b01d LP |
1023 | table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
1024 | ||
034c6ed7 | 1025 | old_state = s->state; |
5cb5a6ff | 1026 | s->state = state; |
034c6ed7 | 1027 | |
3a111838 MS |
1028 | service_unwatch_pid_file(s); |
1029 | ||
842129f5 LP |
1030 | if (!IN_SET(state, |
1031 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
36c16a7c | 1032 | SERVICE_RUNNING, |
842129f5 | 1033 | SERVICE_RELOAD, |
c87700a1 | 1034 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
842129f5 LP |
1035 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL, |
1036 | SERVICE_AUTO_RESTART)) | |
718db961 | 1037 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
034c6ed7 | 1038 | |
842129f5 LP |
1039 | if (!IN_SET(state, |
1040 | SERVICE_START, SERVICE_START_POST, | |
1041 | SERVICE_RUNNING, SERVICE_RELOAD, | |
c87700a1 | 1042 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf108e55 | 1043 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
5e94833f | 1044 | service_unwatch_main_pid(s); |
867b3b7d LP |
1045 | s->main_command = NULL; |
1046 | } | |
034c6ed7 | 1047 | |
842129f5 LP |
1048 | if (!IN_SET(state, |
1049 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
1050 | SERVICE_RELOAD, | |
c87700a1 | 1051 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
842129f5 | 1052 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
5e94833f | 1053 | service_unwatch_control_pid(s); |
034c6ed7 | 1054 | s->control_command = NULL; |
a16e1123 | 1055 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; |
e537352b | 1056 | } |
034c6ed7 | 1057 | |
50be4f4a | 1058 | if (IN_SET(state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART)) { |
a911bb9a | 1059 | unit_unwatch_all_pids(UNIT(s)); |
50be4f4a LP |
1060 | unit_dequeue_rewatch_pids(UNIT(s)); |
1061 | } | |
a911bb9a | 1062 | |
842129f5 LP |
1063 | if (!IN_SET(state, |
1064 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
1065 | SERVICE_RUNNING, SERVICE_RELOAD, | |
c87700a1 | 1066 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
57614eb1 | 1067 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL) && |
5cc3985e | 1068 | !(state == SERVICE_DEAD && UNIT(s)->job)) |
4f2d528d LP |
1069 | service_close_socket_fd(s); |
1070 | ||
5686391b LP |
1071 | if (state != SERVICE_START) |
1072 | s->exec_fd_event_source = sd_event_source_unref(s->exec_fd_event_source); | |
1073 | ||
7596e9e1 | 1074 | if (!IN_SET(state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
a6927d7f MO |
1075 | service_stop_watchdog(s); |
1076 | ||
f6023656 LP |
1077 | /* For the inactive states unit_notify() will trim the cgroup, |
1078 | * but for exit we have to do that ourselves... */ | |
2c289ea8 | 1079 | if (state == SERVICE_EXITED && !MANAGER_IS_RELOADING(UNIT(s)->manager)) |
efdb0237 | 1080 | unit_prune_cgroup(UNIT(s)); |
f6023656 | 1081 | |
e537352b | 1082 | if (old_state != state) |
f2341e0a | 1083 | log_unit_debug(UNIT(s), "Changed %s -> %s", service_state_to_string(old_state), service_state_to_string(state)); |
acbb0225 | 1084 | |
2ad2e41a LP |
1085 | unit_notify(UNIT(s), table[old_state], table[state], |
1086 | (s->reload_result == SERVICE_SUCCESS ? 0 : UNIT_NOTIFY_RELOAD_FAILURE) | | |
1087 | (s->will_auto_restart ? UNIT_NOTIFY_WILL_AUTO_RESTART : 0)); | |
034c6ed7 LP |
1088 | } |
1089 | ||
36c16a7c LP |
1090 | static usec_t service_coldplug_timeout(Service *s) { |
1091 | assert(s); | |
1092 | ||
1093 | switch (s->deserialized_state) { | |
1094 | ||
1095 | case SERVICE_START_PRE: | |
1096 | case SERVICE_START: | |
1097 | case SERVICE_START_POST: | |
1098 | case SERVICE_RELOAD: | |
1099 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->timeout_start_usec); | |
1100 | ||
1101 | case SERVICE_RUNNING: | |
1102 | return usec_add(UNIT(s)->active_enter_timestamp.monotonic, s->runtime_max_usec); | |
1103 | ||
1104 | case SERVICE_STOP: | |
c87700a1 | 1105 | case SERVICE_STOP_WATCHDOG: |
36c16a7c LP |
1106 | case SERVICE_STOP_SIGTERM: |
1107 | case SERVICE_STOP_SIGKILL: | |
1108 | case SERVICE_STOP_POST: | |
1109 | case SERVICE_FINAL_SIGTERM: | |
1110 | case SERVICE_FINAL_SIGKILL: | |
1111 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->timeout_stop_usec); | |
1112 | ||
1113 | case SERVICE_AUTO_RESTART: | |
1114 | return usec_add(UNIT(s)->inactive_enter_timestamp.monotonic, s->restart_usec); | |
1115 | ||
1116 | default: | |
1117 | return USEC_INFINITY; | |
1118 | } | |
1119 | } | |
1120 | ||
be847e82 | 1121 | static int service_coldplug(Unit *u) { |
a16e1123 LP |
1122 | Service *s = SERVICE(u); |
1123 | int r; | |
1124 | ||
1125 | assert(s); | |
1126 | assert(s->state == SERVICE_DEAD); | |
1127 | ||
930d2838 LP |
1128 | if (s->deserialized_state == s->state) |
1129 | return 0; | |
6c12b52e | 1130 | |
36c16a7c LP |
1131 | r = service_arm_timer(s, service_coldplug_timeout(s)); |
1132 | if (r < 0) | |
1133 | return r; | |
a911bb9a | 1134 | |
930d2838 LP |
1135 | if (s->main_pid > 0 && |
1136 | pid_is_unwaited(s->main_pid) && | |
9acac212 | 1137 | (IN_SET(s->deserialized_state, |
930d2838 LP |
1138 | SERVICE_START, SERVICE_START_POST, |
1139 | SERVICE_RUNNING, SERVICE_RELOAD, | |
c87700a1 | 1140 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
930d2838 LP |
1141 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL))) { |
1142 | r = unit_watch_pid(UNIT(s), s->main_pid); | |
1143 | if (r < 0) | |
1144 | return r; | |
1145 | } | |
bb242b7b | 1146 | |
930d2838 LP |
1147 | if (s->control_pid > 0 && |
1148 | pid_is_unwaited(s->control_pid) && | |
1149 | IN_SET(s->deserialized_state, | |
1150 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
1151 | SERVICE_RELOAD, | |
c87700a1 | 1152 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
930d2838 LP |
1153 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
1154 | r = unit_watch_pid(UNIT(s), s->control_pid); | |
1155 | if (r < 0) | |
1156 | return r; | |
a16e1123 | 1157 | } |
92c1622e | 1158 | |
e8a565cb | 1159 | if (!IN_SET(s->deserialized_state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART)) { |
50be4f4a | 1160 | (void) unit_enqueue_rewatch_pids(u); |
29206d46 | 1161 | (void) unit_setup_dynamic_creds(u); |
e8a565cb YW |
1162 | (void) unit_setup_exec_runtime(u); |
1163 | } | |
29206d46 | 1164 | |
50be4f4a LP |
1165 | if (IN_SET(s->deserialized_state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
1166 | service_start_watchdog(s); | |
1167 | ||
3ebcd323 ZJS |
1168 | if (UNIT_ISSET(s->accept_socket)) { |
1169 | Socket* socket = SOCKET(UNIT_DEREF(s->accept_socket)); | |
1170 | ||
1171 | if (socket->max_connections_per_source > 0) { | |
1172 | SocketPeer *peer; | |
1173 | ||
1174 | /* Make a best-effort attempt at bumping the connection count */ | |
1175 | if (socket_acquire_peer(socket, s->socket_fd, &peer) > 0) { | |
1176 | socket_peer_unref(s->peer); | |
1177 | s->peer = peer; | |
1178 | } | |
1179 | } | |
1180 | } | |
1181 | ||
930d2838 | 1182 | service_set_state(s, s->deserialized_state); |
a16e1123 LP |
1183 | return 0; |
1184 | } | |
1185 | ||
25b583d7 LP |
1186 | static int service_collect_fds( |
1187 | Service *s, | |
1188 | int **fds, | |
1189 | char ***fd_names, | |
1190 | size_t *n_socket_fds, | |
1191 | size_t *n_storage_fds) { | |
4c47affc | 1192 | |
8dd4c05b | 1193 | _cleanup_strv_free_ char **rfd_names = NULL; |
a354329f | 1194 | _cleanup_free_ int *rfds = NULL; |
25b583d7 | 1195 | size_t rn_socket_fds = 0, rn_storage_fds = 0; |
4c47affc | 1196 | int r; |
44d8db9e LP |
1197 | |
1198 | assert(s); | |
1199 | assert(fds); | |
8dd4c05b | 1200 | assert(fd_names); |
9b141911 | 1201 | assert(n_socket_fds); |
25b583d7 | 1202 | assert(n_storage_fds); |
44d8db9e | 1203 | |
8dd4c05b | 1204 | if (s->socket_fd >= 0) { |
6cf6bbc2 | 1205 | |
8dd4c05b | 1206 | /* Pass the per-connection socket */ |
57020a3a | 1207 | |
8dd4c05b LP |
1208 | rfds = new(int, 1); |
1209 | if (!rfds) | |
1210 | return -ENOMEM; | |
1211 | rfds[0] = s->socket_fd; | |
57020a3a | 1212 | |
8dd4c05b LP |
1213 | rfd_names = strv_new("connection", NULL); |
1214 | if (!rfd_names) | |
1215 | return -ENOMEM; | |
44d8db9e | 1216 | |
4c47affc | 1217 | rn_socket_fds = 1; |
8dd4c05b LP |
1218 | } else { |
1219 | Iterator i; | |
eef85c4a | 1220 | void *v; |
8dd4c05b | 1221 | Unit *u; |
44d8db9e | 1222 | |
8dd4c05b | 1223 | /* Pass all our configured sockets for singleton services */ |
44d8db9e | 1224 | |
eef85c4a | 1225 | HASHMAP_FOREACH_KEY(v, u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) { |
8dd4c05b LP |
1226 | _cleanup_free_ int *cfds = NULL; |
1227 | Socket *sock; | |
1228 | int cn_fds; | |
44d8db9e | 1229 | |
8dd4c05b LP |
1230 | if (u->type != UNIT_SOCKET) |
1231 | continue; | |
44d8db9e | 1232 | |
8dd4c05b | 1233 | sock = SOCKET(u); |
a354329f | 1234 | |
8dd4c05b LP |
1235 | cn_fds = socket_collect_fds(sock, &cfds); |
1236 | if (cn_fds < 0) | |
1237 | return cn_fds; | |
44d8db9e | 1238 | |
8dd4c05b LP |
1239 | if (cn_fds <= 0) |
1240 | continue; | |
79c7626d | 1241 | |
8dd4c05b | 1242 | if (!rfds) { |
1cc6c93a | 1243 | rfds = TAKE_PTR(cfds); |
4c47affc | 1244 | rn_socket_fds = cn_fds; |
8dd4c05b LP |
1245 | } else { |
1246 | int *t; | |
1247 | ||
62d74c78 | 1248 | t = reallocarray(rfds, rn_socket_fds + cn_fds, sizeof(int)); |
8dd4c05b LP |
1249 | if (!t) |
1250 | return -ENOMEM; | |
1251 | ||
4c47affc | 1252 | memcpy(t + rn_socket_fds, cfds, cn_fds * sizeof(int)); |
8dd4c05b LP |
1253 | |
1254 | rfds = t; | |
4c47affc | 1255 | rn_socket_fds += cn_fds; |
8dd4c05b LP |
1256 | } |
1257 | ||
1258 | r = strv_extend_n(&rfd_names, socket_fdname(sock), cn_fds); | |
1259 | if (r < 0) | |
1260 | return r; | |
44d8db9e LP |
1261 | } |
1262 | } | |
1263 | ||
a354329f LP |
1264 | if (s->n_fd_store > 0) { |
1265 | ServiceFDStore *fs; | |
25b583d7 | 1266 | size_t n_fds; |
8dd4c05b | 1267 | char **nl; |
a354329f LP |
1268 | int *t; |
1269 | ||
62d74c78 | 1270 | t = reallocarray(rfds, rn_socket_fds + s->n_fd_store, sizeof(int)); |
a354329f LP |
1271 | if (!t) |
1272 | return -ENOMEM; | |
1273 | ||
1274 | rfds = t; | |
8dd4c05b | 1275 | |
62d74c78 | 1276 | nl = reallocarray(rfd_names, rn_socket_fds + s->n_fd_store + 1, sizeof(char *)); |
8dd4c05b LP |
1277 | if (!nl) |
1278 | return -ENOMEM; | |
1279 | ||
1280 | rfd_names = nl; | |
4c47affc | 1281 | n_fds = rn_socket_fds; |
8dd4c05b LP |
1282 | |
1283 | LIST_FOREACH(fd_store, fs, s->fd_store) { | |
4c47affc FB |
1284 | rfds[n_fds] = fs->fd; |
1285 | rfd_names[n_fds] = strdup(strempty(fs->fdname)); | |
1286 | if (!rfd_names[n_fds]) | |
8dd4c05b LP |
1287 | return -ENOMEM; |
1288 | ||
4c47affc FB |
1289 | rn_storage_fds++; |
1290 | n_fds++; | |
8dd4c05b LP |
1291 | } |
1292 | ||
4c47affc | 1293 | rfd_names[n_fds] = NULL; |
a354329f LP |
1294 | } |
1295 | ||
1cc6c93a YW |
1296 | *fds = TAKE_PTR(rfds); |
1297 | *fd_names = TAKE_PTR(rfd_names); | |
9b141911 | 1298 | *n_socket_fds = rn_socket_fds; |
4c47affc | 1299 | *n_storage_fds = rn_storage_fds; |
3e33402a | 1300 | |
4c47affc | 1301 | return 0; |
44d8db9e LP |
1302 | } |
1303 | ||
5686391b LP |
1304 | static int service_allocate_exec_fd_event_source( |
1305 | Service *s, | |
1306 | int fd, | |
1307 | sd_event_source **ret_event_source) { | |
1308 | ||
1309 | _cleanup_(sd_event_source_unrefp) sd_event_source *source = NULL; | |
1310 | int r; | |
1311 | ||
1312 | assert(s); | |
1313 | assert(fd >= 0); | |
1314 | assert(ret_event_source); | |
1315 | ||
1316 | r = sd_event_add_io(UNIT(s)->manager->event, &source, fd, 0, service_dispatch_exec_io, s); | |
1317 | if (r < 0) | |
1318 | return log_unit_error_errno(UNIT(s), r, "Failed to allocate exec_fd event source: %m"); | |
1319 | ||
1320 | /* This is a bit lower priority than SIGCHLD, as that carries a lot more interesting failure information */ | |
1321 | ||
1322 | r = sd_event_source_set_priority(source, SD_EVENT_PRIORITY_NORMAL-3); | |
1323 | if (r < 0) | |
1324 | return log_unit_error_errno(UNIT(s), r, "Failed to adjust priority of exec_fd event source: %m"); | |
1325 | ||
1326 | (void) sd_event_source_set_description(source, "service event_fd"); | |
1327 | ||
1328 | r = sd_event_source_set_io_fd_own(source, true); | |
1329 | if (r < 0) | |
1330 | return log_unit_error_errno(UNIT(s), r, "Failed to pass ownership of fd to event source: %m"); | |
1331 | ||
1332 | *ret_event_source = TAKE_PTR(source); | |
1333 | return 0; | |
1334 | } | |
1335 | ||
1336 | static int service_allocate_exec_fd( | |
1337 | Service *s, | |
1338 | sd_event_source **ret_event_source, | |
1339 | int* ret_exec_fd) { | |
1340 | ||
1341 | _cleanup_close_pair_ int p[2] = { -1, -1 }; | |
1342 | int r; | |
1343 | ||
1344 | assert(s); | |
1345 | assert(ret_event_source); | |
1346 | assert(ret_exec_fd); | |
1347 | ||
1348 | if (pipe2(p, O_CLOEXEC|O_NONBLOCK) < 0) | |
1349 | return log_unit_error_errno(UNIT(s), errno, "Failed to allocate exec_fd pipe: %m"); | |
1350 | ||
1351 | r = service_allocate_exec_fd_event_source(s, p[0], ret_event_source); | |
1352 | if (r < 0) | |
1353 | return r; | |
1354 | ||
1355 | p[0] = -1; | |
1356 | *ret_exec_fd = TAKE_FD(p[1]); | |
1357 | ||
1358 | return 0; | |
1359 | } | |
1360 | ||
6375bd20 JW |
1361 | static bool service_exec_needs_notify_socket(Service *s, ExecFlags flags) { |
1362 | assert(s); | |
1363 | ||
1364 | /* Notifications are accepted depending on the process and | |
1365 | * the access setting of the service: | |
1366 | * process: \ access: NONE MAIN EXEC ALL | |
1367 | * main no yes yes yes | |
1368 | * control no no yes yes | |
1369 | * other (forked) no no no yes */ | |
1370 | ||
1371 | if (flags & EXEC_IS_CONTROL) | |
1372 | /* A control process */ | |
1373 | return IN_SET(s->notify_access, NOTIFY_EXEC, NOTIFY_ALL); | |
1374 | ||
1375 | /* We only spawn main processes and control processes, so any | |
1376 | * process that is not a control process is a main process */ | |
1377 | return s->notify_access != NOTIFY_NONE; | |
1378 | } | |
1379 | ||
81a2b7ce LP |
1380 | static int service_spawn( |
1381 | Service *s, | |
1382 | ExecCommand *c, | |
21b2ce39 | 1383 | usec_t timeout, |
c39f1ce2 | 1384 | ExecFlags flags, |
81a2b7ce LP |
1385 | pid_t *_pid) { |
1386 | ||
9fa95f85 | 1387 | ExecParameters exec_params = { |
c39f1ce2 LP |
1388 | .flags = flags, |
1389 | .stdin_fd = -1, | |
1390 | .stdout_fd = -1, | |
1391 | .stderr_fd = -1, | |
25b583d7 | 1392 | .exec_fd = -1, |
9fa95f85 | 1393 | }; |
3c7416b6 | 1394 | _cleanup_strv_free_ char **final_env = NULL, **our_env = NULL, **fd_names = NULL; |
5686391b | 1395 | _cleanup_(sd_event_source_unrefp) sd_event_source *exec_fd_source = NULL; |
25b583d7 | 1396 | size_t n_socket_fds = 0, n_storage_fds = 0, n_env = 0; |
5686391b | 1397 | _cleanup_close_ int exec_fd = -1; |
3c7416b6 LP |
1398 | _cleanup_free_ int *fds = NULL; |
1399 | pid_t pid; | |
8dd4c05b LP |
1400 | int r; |
1401 | ||
034c6ed7 LP |
1402 | assert(s); |
1403 | assert(c); | |
1404 | assert(_pid); | |
1405 | ||
3c7416b6 LP |
1406 | r = unit_prepare_exec(UNIT(s)); |
1407 | if (r < 0) | |
1408 | return r; | |
1409 | ||
9c1a61ad LP |
1410 | if (flags & EXEC_IS_CONTROL) { |
1411 | /* If this is a control process, mask the permissions/chroot application if this is requested. */ | |
1412 | if (s->permissions_start_only) | |
1703fa41 | 1413 | exec_params.flags &= ~EXEC_APPLY_SANDBOXING; |
9c1a61ad LP |
1414 | if (s->root_directory_start_only) |
1415 | exec_params.flags &= ~EXEC_APPLY_CHROOT; | |
1416 | } | |
1417 | ||
c39f1ce2 | 1418 | if ((flags & EXEC_PASS_FDS) || |
6cf6bbc2 LP |
1419 | s->exec_context.std_input == EXEC_INPUT_SOCKET || |
1420 | s->exec_context.std_output == EXEC_OUTPUT_SOCKET || | |
1421 | s->exec_context.std_error == EXEC_OUTPUT_SOCKET) { | |
1422 | ||
25b583d7 | 1423 | r = service_collect_fds(s, &fds, &fd_names, &n_socket_fds, &n_storage_fds); |
8dd4c05b | 1424 | if (r < 0) |
36c16a7c | 1425 | return r; |
6cf6bbc2 | 1426 | |
25b583d7 | 1427 | log_unit_debug(UNIT(s), "Passing %zu fds to service", n_socket_fds + n_storage_fds); |
4f2d528d | 1428 | } |
44d8db9e | 1429 | |
5686391b LP |
1430 | if (!FLAGS_SET(flags, EXEC_IS_CONTROL) && s->type == SERVICE_EXEC) { |
1431 | assert(!s->exec_fd_event_source); | |
1432 | ||
1433 | r = service_allocate_exec_fd(s, &exec_fd_source, &exec_fd); | |
1434 | if (r < 0) | |
1435 | return r; | |
1436 | } | |
1437 | ||
36c16a7c LP |
1438 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), timeout)); |
1439 | if (r < 0) | |
1440 | return r; | |
034c6ed7 | 1441 | |
136dc4c4 | 1442 | our_env = new0(char*, 9); |
36c16a7c LP |
1443 | if (!our_env) |
1444 | return -ENOMEM; | |
c952c6ec | 1445 | |
6375bd20 | 1446 | if (service_exec_needs_notify_socket(s, flags)) |
36c16a7c LP |
1447 | if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) |
1448 | return -ENOMEM; | |
c952c6ec | 1449 | |
2105e76a | 1450 | if (s->main_pid > 0) |
36c16a7c LP |
1451 | if (asprintf(our_env + n_env++, "MAINPID="PID_FMT, s->main_pid) < 0) |
1452 | return -ENOMEM; | |
2105e76a | 1453 | |
c39f1ce2 | 1454 | if (MANAGER_IS_USER(UNIT(s)->manager)) |
df0ff127 | 1455 | if (asprintf(our_env + n_env++, "MANAGERPID="PID_FMT, getpid_cached()) < 0) |
36c16a7c | 1456 | return -ENOMEM; |
97ae63e2 | 1457 | |
8dd4c05b | 1458 | if (s->socket_fd >= 0) { |
3b1c5241 SL |
1459 | union sockaddr_union sa; |
1460 | socklen_t salen = sizeof(sa); | |
1461 | ||
f56e7bfe LP |
1462 | /* If this is a per-connection service instance, let's set $REMOTE_ADDR and $REMOTE_PORT to something |
1463 | * useful. Note that we do this only when we are still connected at this point in time, which we might | |
1464 | * very well not be. Hence we ignore all errors when retrieving peer information (as that might result | |
1465 | * in ENOTCONN), and just use whate we can use. */ | |
f2dbd059 | 1466 | |
f56e7bfe LP |
1467 | if (getpeername(s->socket_fd, &sa.sa, &salen) >= 0 && |
1468 | IN_SET(sa.sa.sa_family, AF_INET, AF_INET6, AF_VSOCK)) { | |
3b1c5241 | 1469 | |
3b1c5241 SL |
1470 | _cleanup_free_ char *addr = NULL; |
1471 | char *t; | |
882ac6e7 | 1472 | unsigned port; |
3b1c5241 SL |
1473 | |
1474 | r = sockaddr_pretty(&sa.sa, salen, true, false, &addr); | |
1475 | if (r < 0) | |
36c16a7c | 1476 | return r; |
3b1c5241 SL |
1477 | |
1478 | t = strappend("REMOTE_ADDR=", addr); | |
36c16a7c LP |
1479 | if (!t) |
1480 | return -ENOMEM; | |
3b1c5241 SL |
1481 | our_env[n_env++] = t; |
1482 | ||
882ac6e7 SH |
1483 | r = sockaddr_port(&sa.sa, &port); |
1484 | if (r < 0) | |
1485 | return r; | |
3b1c5241 | 1486 | |
36c16a7c LP |
1487 | if (asprintf(&t, "REMOTE_PORT=%u", port) < 0) |
1488 | return -ENOMEM; | |
3b1c5241 SL |
1489 | our_env[n_env++] = t; |
1490 | } | |
1491 | } | |
1492 | ||
136dc4c4 LP |
1493 | if (flags & EXEC_SETENV_RESULT) { |
1494 | if (asprintf(our_env + n_env++, "SERVICE_RESULT=%s", service_result_to_string(s->result)) < 0) | |
1495 | return -ENOMEM; | |
1496 | ||
1497 | if (s->main_exec_status.pid > 0 && | |
1498 | dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) { | |
1499 | if (asprintf(our_env + n_env++, "EXIT_CODE=%s", sigchld_code_to_string(s->main_exec_status.code)) < 0) | |
1500 | return -ENOMEM; | |
1501 | ||
1502 | if (s->main_exec_status.code == CLD_EXITED) | |
1503 | r = asprintf(our_env + n_env++, "EXIT_STATUS=%i", s->main_exec_status.status); | |
1504 | else | |
1505 | r = asprintf(our_env + n_env++, "EXIT_STATUS=%s", signal_to_string(s->main_exec_status.status)); | |
1506 | if (r < 0) | |
1507 | return -ENOMEM; | |
1508 | } | |
1509 | } | |
1510 | ||
f0d47797 | 1511 | unit_set_exec_params(UNIT(s), &exec_params); |
3536f49e YW |
1512 | |
1513 | final_env = strv_env_merge(2, exec_params.environment, our_env, NULL); | |
36c16a7c LP |
1514 | if (!final_env) |
1515 | return -ENOMEM; | |
c952c6ec | 1516 | |
5bf7569c LP |
1517 | /* System services should get a new keyring by default. */ |
1518 | SET_FLAG(exec_params.flags, EXEC_NEW_KEYRING, MANAGER_IS_SYSTEM(UNIT(s)->manager)); | |
ac647978 LP |
1519 | |
1520 | /* System D-Bus needs nss-systemd disabled, so that we don't deadlock */ | |
1521 | SET_FLAG(exec_params.flags, EXEC_NSS_BYPASS_BUS, | |
1522 | MANAGER_IS_SYSTEM(UNIT(s)->manager) && unit_has_name(UNIT(s), SPECIAL_DBUS_SERVICE)); | |
4ad49000 | 1523 | |
c39f1ce2 | 1524 | exec_params.environment = final_env; |
9fa95f85 | 1525 | exec_params.fds = fds; |
8dd4c05b | 1526 | exec_params.fd_names = fd_names; |
9b141911 | 1527 | exec_params.n_socket_fds = n_socket_fds; |
25b583d7 | 1528 | exec_params.n_storage_fds = n_storage_fds; |
9fa95f85 | 1529 | exec_params.watchdog_usec = s->watchdog_usec; |
a34ceba6 | 1530 | exec_params.selinux_context_net = s->socket_fd_selinux_context_net; |
9fa95f85 DM |
1531 | if (s->type == SERVICE_IDLE) |
1532 | exec_params.idle_pipe = UNIT(s)->manager->idle_pipe; | |
a34ceba6 LP |
1533 | exec_params.stdin_fd = s->stdin_fd; |
1534 | exec_params.stdout_fd = s->stdout_fd; | |
1535 | exec_params.stderr_fd = s->stderr_fd; | |
5686391b | 1536 | exec_params.exec_fd = exec_fd; |
9fa95f85 | 1537 | |
f2341e0a LP |
1538 | r = exec_spawn(UNIT(s), |
1539 | c, | |
9e2f7c11 | 1540 | &s->exec_context, |
9fa95f85 | 1541 | &exec_params, |
613b411c | 1542 | s->exec_runtime, |
29206d46 | 1543 | &s->dynamic_creds, |
9e2f7c11 | 1544 | &pid); |
9e2f7c11 | 1545 | if (r < 0) |
36c16a7c | 1546 | return r; |
034c6ed7 | 1547 | |
5686391b LP |
1548 | s->exec_fd_event_source = TAKE_PTR(exec_fd_source); |
1549 | s->exec_fd_hot = false; | |
1550 | ||
117dcc57 | 1551 | r = unit_watch_pid(UNIT(s), pid); |
e8b509d3 | 1552 | if (r < 0) /* FIXME: we need to do something here */ |
36c16a7c | 1553 | return r; |
034c6ed7 LP |
1554 | |
1555 | *_pid = pid; | |
1556 | ||
5cb5a6ff | 1557 | return 0; |
034c6ed7 LP |
1558 | } |
1559 | ||
80876c20 LP |
1560 | static int main_pid_good(Service *s) { |
1561 | assert(s); | |
1562 | ||
51894d70 | 1563 | /* Returns 0 if the pid is dead, > 0 if it is good, < 0 if we don't know */ |
80876c20 | 1564 | |
fc08079e | 1565 | /* If we know the pid file, then let's just check if it is |
80876c20 | 1566 | * still valid */ |
6dfa5494 LP |
1567 | if (s->main_pid_known) { |
1568 | ||
1569 | /* If it's an alien child let's check if it is still | |
1570 | * alive ... */ | |
62220cf7 | 1571 | if (s->main_pid_alien && s->main_pid > 0) |
9f5650ae | 1572 | return pid_is_alive(s->main_pid); |
6dfa5494 LP |
1573 | |
1574 | /* .. otherwise assume we'll get a SIGCHLD for it, | |
1575 | * which we really should wait for to collect exit | |
1576 | * status and code */ | |
80876c20 | 1577 | return s->main_pid > 0; |
6dfa5494 | 1578 | } |
80876c20 LP |
1579 | |
1580 | /* We don't know the pid */ | |
1581 | return -EAGAIN; | |
1582 | } | |
1583 | ||
019be286 | 1584 | static int control_pid_good(Service *s) { |
80876c20 LP |
1585 | assert(s); |
1586 | ||
07697d7e LP |
1587 | /* Returns 0 if the control PID is dead, > 0 if it is good. We never actually return < 0 here, but in order to |
1588 | * make this function as similar as possible to main_pid_good() and cgroup_good(), we pretend that < 0 also | |
1589 | * means: we can't figure it out. */ | |
1590 | ||
80876c20 LP |
1591 | return s->control_pid > 0; |
1592 | } | |
1593 | ||
1594 | static int cgroup_good(Service *s) { | |
1595 | int r; | |
1596 | ||
1597 | assert(s); | |
1598 | ||
07697d7e LP |
1599 | /* Returns 0 if the cgroup is empty or doesn't exist, > 0 if it is exists and is populated, < 0 if we can't |
1600 | * figure it out */ | |
1601 | ||
4ad49000 LP |
1602 | if (!UNIT(s)->cgroup_path) |
1603 | return 0; | |
1604 | ||
6f883237 | 1605 | r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, UNIT(s)->cgroup_path); |
117dcc57 | 1606 | if (r < 0) |
80876c20 LP |
1607 | return r; |
1608 | ||
b13ddbbc | 1609 | return r == 0; |
80876c20 LP |
1610 | } |
1611 | ||
a509f0e6 LP |
1612 | static bool service_shall_restart(Service *s) { |
1613 | assert(s); | |
1614 | ||
1615 | /* Don't restart after manual stops */ | |
1616 | if (s->forbid_restart) | |
1617 | return false; | |
1618 | ||
1619 | /* Never restart if this is configured as special exception */ | |
1620 | if (exit_status_set_test(&s->restart_prevent_status, s->main_exec_status.code, s->main_exec_status.status)) | |
1621 | return false; | |
1622 | ||
1623 | /* Restart if the exit code/status are configured as restart triggers */ | |
1624 | if (exit_status_set_test(&s->restart_force_status, s->main_exec_status.code, s->main_exec_status.status)) | |
1625 | return true; | |
1626 | ||
1627 | switch (s->restart) { | |
1628 | ||
1629 | case SERVICE_RESTART_NO: | |
1630 | return false; | |
1631 | ||
1632 | case SERVICE_RESTART_ALWAYS: | |
1633 | return true; | |
1634 | ||
1635 | case SERVICE_RESTART_ON_SUCCESS: | |
1636 | return s->result == SERVICE_SUCCESS; | |
1637 | ||
1638 | case SERVICE_RESTART_ON_FAILURE: | |
1639 | return s->result != SERVICE_SUCCESS; | |
1640 | ||
1641 | case SERVICE_RESTART_ON_ABNORMAL: | |
1642 | return !IN_SET(s->result, SERVICE_SUCCESS, SERVICE_FAILURE_EXIT_CODE); | |
1643 | ||
1644 | case SERVICE_RESTART_ON_WATCHDOG: | |
1645 | return s->result == SERVICE_FAILURE_WATCHDOG; | |
1646 | ||
1647 | case SERVICE_RESTART_ON_ABORT: | |
1648 | return IN_SET(s->result, SERVICE_FAILURE_SIGNAL, SERVICE_FAILURE_CORE_DUMP); | |
1649 | ||
1650 | default: | |
1651 | assert_not_reached("unknown restart setting"); | |
1652 | } | |
1653 | } | |
1654 | ||
deb4e708 MK |
1655 | static bool service_will_restart(Unit *u) { |
1656 | Service *s = SERVICE(u); | |
1657 | ||
53f47dfc YW |
1658 | assert(s); |
1659 | ||
deb4e708 MK |
1660 | if (s->will_auto_restart) |
1661 | return true; | |
53f47dfc YW |
1662 | if (s->state == SERVICE_AUTO_RESTART) |
1663 | return true; | |
1664 | if (!UNIT(s)->job) | |
1665 | return false; | |
1666 | if (UNIT(s)->job->type == JOB_START) | |
1667 | return true; | |
2ad2e41a | 1668 | |
53f47dfc YW |
1669 | return false; |
1670 | } | |
1671 | ||
f42806df | 1672 | static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) { |
034c6ed7 | 1673 | int r; |
0f52f8e5 | 1674 | |
034c6ed7 LP |
1675 | assert(s); |
1676 | ||
0f52f8e5 LP |
1677 | /* If there's a stop job queued before we enter the DEAD state, we shouldn't act on Restart=, in order to not |
1678 | * undo what has already been enqueued. */ | |
1679 | if (unit_stop_pending(UNIT(s))) | |
1680 | allow_restart = false; | |
1681 | ||
a0fef983 | 1682 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1683 | s->result = f; |
034c6ed7 | 1684 | |
ed77d407 LP |
1685 | if (s->result != SERVICE_SUCCESS) |
1686 | log_unit_warning(UNIT(s), "Failed with result '%s'.", service_result_to_string(s->result)); | |
1687 | ||
deb4e708 MK |
1688 | if (allow_restart && service_shall_restart(s)) |
1689 | s->will_auto_restart = true; | |
1690 | ||
7eb2a8a1 LP |
1691 | /* Make sure service_release_resources() doesn't destroy our FD store, while we are changing through |
1692 | * SERVICE_FAILED/SERVICE_DEAD before entering into SERVICE_AUTO_RESTART. */ | |
1693 | s->n_keep_fd_store ++; | |
1694 | ||
0c7f15b3 MS |
1695 | service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD); |
1696 | ||
deb4e708 MK |
1697 | if (s->will_auto_restart) { |
1698 | s->will_auto_restart = false; | |
034c6ed7 | 1699 | |
36c16a7c | 1700 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->restart_usec)); |
7eb2a8a1 LP |
1701 | if (r < 0) { |
1702 | s->n_keep_fd_store--; | |
034c6ed7 | 1703 | goto fail; |
7eb2a8a1 | 1704 | } |
034c6ed7 LP |
1705 | |
1706 | service_set_state(s, SERVICE_AUTO_RESTART); | |
7a0019d3 LP |
1707 | } else |
1708 | /* If we shan't restart, then flush out the restart counter. But don't do that immediately, so that the | |
1709 | * user can still introspect the counter. Do so on the next start. */ | |
1710 | s->flush_n_restarts = true; | |
034c6ed7 | 1711 | |
7eb2a8a1 LP |
1712 | /* The new state is in effect, let's decrease the fd store ref counter again. Let's also readd us to the GC |
1713 | * queue, so that the fd store is possibly gc'ed again */ | |
1714 | s->n_keep_fd_store--; | |
1715 | unit_add_to_gc_queue(UNIT(s)); | |
1716 | ||
f2341e0a | 1717 | /* The next restart might not be a manual stop, hence reset the flag indicating manual stops */ |
47342320 LP |
1718 | s->forbid_restart = false; |
1719 | ||
e66cf1a3 | 1720 | /* We want fresh tmpdirs in case service is started again immediately */ |
e8a565cb | 1721 | s->exec_runtime = exec_runtime_unref(s->exec_runtime, true); |
c17ec25e | 1722 | |
53f47dfc | 1723 | if (s->exec_context.runtime_directory_preserve_mode == EXEC_PRESERVE_NO || |
deb4e708 | 1724 | (s->exec_context.runtime_directory_preserve_mode == EXEC_PRESERVE_RESTART && !service_will_restart(UNIT(s)))) |
53f47dfc | 1725 | /* Also, remove the runtime directory */ |
3536f49e | 1726 | exec_context_destroy_runtime_directory(&s->exec_context, UNIT(s)->manager->prefix[EXEC_DIRECTORY_RUNTIME]); |
e66cf1a3 | 1727 | |
00d9ef85 LP |
1728 | /* Get rid of the IPC bits of the user */ |
1729 | unit_unref_uid_gid(UNIT(s), true); | |
1730 | ||
29206d46 LP |
1731 | /* Release the user, and destroy it if we are the only remaining owner */ |
1732 | dynamic_creds_destroy(&s->dynamic_creds); | |
1733 | ||
9285c9ff LN |
1734 | /* Try to delete the pid file. At this point it will be |
1735 | * out-of-date, and some software might be confused by it, so | |
1736 | * let's remove it. */ | |
1737 | if (s->pid_file) | |
fabab190 | 1738 | (void) unlink(s->pid_file); |
9285c9ff | 1739 | |
034c6ed7 LP |
1740 | return; |
1741 | ||
1742 | fail: | |
f2341e0a | 1743 | log_unit_warning_errno(UNIT(s), r, "Failed to run install restart timer: %m"); |
f42806df | 1744 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); |
034c6ed7 LP |
1745 | } |
1746 | ||
f42806df | 1747 | static void service_enter_stop_post(Service *s, ServiceResult f) { |
034c6ed7 LP |
1748 | int r; |
1749 | assert(s); | |
1750 | ||
a0fef983 | 1751 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1752 | s->result = f; |
034c6ed7 | 1753 | |
5e94833f | 1754 | service_unwatch_control_pid(s); |
50be4f4a | 1755 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
5e94833f | 1756 | |
117dcc57 ZJS |
1757 | s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST]; |
1758 | if (s->control_command) { | |
867b3b7d LP |
1759 | s->control_command_id = SERVICE_EXEC_STOP_POST; |
1760 | ||
ecedd90f LP |
1761 | r = service_spawn(s, |
1762 | s->control_command, | |
21b2ce39 | 1763 | s->timeout_stop_usec, |
1703fa41 | 1764 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_IS_CONTROL|EXEC_SETENV_RESULT, |
ecedd90f LP |
1765 | &s->control_pid); |
1766 | if (r < 0) | |
034c6ed7 LP |
1767 | goto fail; |
1768 | ||
80876c20 LP |
1769 | service_set_state(s, SERVICE_STOP_POST); |
1770 | } else | |
ac84d1fb | 1771 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
1772 | |
1773 | return; | |
1774 | ||
1775 | fail: | |
f2341e0a | 1776 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop-post' task: %m"); |
f42806df | 1777 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1778 | } |
1779 | ||
4940c0b0 LP |
1780 | static int state_to_kill_operation(ServiceState state) { |
1781 | switch (state) { | |
1782 | ||
c87700a1 AZ |
1783 | case SERVICE_STOP_WATCHDOG: |
1784 | return KILL_WATCHDOG; | |
4940c0b0 LP |
1785 | |
1786 | case SERVICE_STOP_SIGTERM: | |
1787 | case SERVICE_FINAL_SIGTERM: | |
1788 | return KILL_TERMINATE; | |
1789 | ||
1790 | case SERVICE_STOP_SIGKILL: | |
1791 | case SERVICE_FINAL_SIGKILL: | |
1792 | return KILL_KILL; | |
1793 | ||
1794 | default: | |
1795 | return _KILL_OPERATION_INVALID; | |
1796 | } | |
1797 | } | |
1798 | ||
f42806df | 1799 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) { |
034c6ed7 | 1800 | int r; |
034c6ed7 LP |
1801 | |
1802 | assert(s); | |
1803 | ||
a0fef983 | 1804 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1805 | s->result = f; |
034c6ed7 | 1806 | |
50be4f4a LP |
1807 | /* Before sending any signal, make sure we track all members of this cgroup */ |
1808 | (void) unit_watch_all_pids(UNIT(s)); | |
1809 | ||
1810 | /* Also, enqueue a job that we recheck all our PIDs a bit later, given that it's likely some processes have | |
1811 | * died now */ | |
1812 | (void) unit_enqueue_rewatch_pids(UNIT(s)); | |
a911bb9a | 1813 | |
cd2086fe LP |
1814 | r = unit_kill_context( |
1815 | UNIT(s), | |
1816 | &s->kill_context, | |
4940c0b0 | 1817 | state_to_kill_operation(state), |
cd2086fe LP |
1818 | s->main_pid, |
1819 | s->control_pid, | |
1820 | s->main_pid_alien); | |
1821 | if (r < 0) | |
1822 | goto fail; | |
034c6ed7 | 1823 | |
cd2086fe | 1824 | if (r > 0) { |
36c16a7c LP |
1825 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_stop_usec)); |
1826 | if (r < 0) | |
1827 | goto fail; | |
d6ea93e3 | 1828 | |
80876c20 | 1829 | service_set_state(s, state); |
c87700a1 | 1830 | } else if (IN_SET(state, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM) && s->kill_context.send_sigkill) |
ac84d1fb | 1831 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_SUCCESS); |
c87700a1 | 1832 | else if (IN_SET(state, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 1833 | service_enter_stop_post(s, SERVICE_SUCCESS); |
1db0db4b | 1834 | else if (state == SERVICE_FINAL_SIGTERM && s->kill_context.send_sigkill) |
ac84d1fb | 1835 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_SUCCESS); |
80876c20 | 1836 | else |
f42806df | 1837 | service_enter_dead(s, SERVICE_SUCCESS, true); |
034c6ed7 LP |
1838 | |
1839 | return; | |
1840 | ||
1841 | fail: | |
f2341e0a | 1842 | log_unit_warning_errno(UNIT(s), r, "Failed to kill processes: %m"); |
034c6ed7 | 1843 | |
c87700a1 | 1844 | if (IN_SET(state, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 1845 | service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES); |
034c6ed7 | 1846 | else |
f42806df | 1847 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
034c6ed7 LP |
1848 | } |
1849 | ||
308d72dc LP |
1850 | static void service_enter_stop_by_notify(Service *s) { |
1851 | assert(s); | |
1852 | ||
50be4f4a | 1853 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
308d72dc | 1854 | |
36c16a7c | 1855 | service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_stop_usec)); |
308d72dc | 1856 | |
6041a7ee MS |
1857 | /* The service told us it's stopping, so it's as if we SIGTERM'd it. */ |
1858 | service_set_state(s, SERVICE_STOP_SIGTERM); | |
308d72dc LP |
1859 | } |
1860 | ||
f42806df | 1861 | static void service_enter_stop(Service *s, ServiceResult f) { |
034c6ed7 | 1862 | int r; |
5925dd3c | 1863 | |
034c6ed7 LP |
1864 | assert(s); |
1865 | ||
a0fef983 | 1866 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1867 | s->result = f; |
034c6ed7 | 1868 | |
5e94833f | 1869 | service_unwatch_control_pid(s); |
50be4f4a | 1870 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
5e94833f | 1871 | |
117dcc57 ZJS |
1872 | s->control_command = s->exec_command[SERVICE_EXEC_STOP]; |
1873 | if (s->control_command) { | |
867b3b7d LP |
1874 | s->control_command_id = SERVICE_EXEC_STOP; |
1875 | ||
ecedd90f LP |
1876 | r = service_spawn(s, |
1877 | s->control_command, | |
21b2ce39 | 1878 | s->timeout_stop_usec, |
1703fa41 | 1879 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_SETENV_RESULT, |
ecedd90f LP |
1880 | &s->control_pid); |
1881 | if (r < 0) | |
034c6ed7 LP |
1882 | goto fail; |
1883 | ||
80876c20 LP |
1884 | service_set_state(s, SERVICE_STOP); |
1885 | } else | |
f42806df | 1886 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
1887 | |
1888 | return; | |
1889 | ||
1890 | fail: | |
f2341e0a | 1891 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop' task: %m"); |
f42806df | 1892 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1893 | } |
1894 | ||
957c3cf9 LP |
1895 | static bool service_good(Service *s) { |
1896 | int main_pid_ok; | |
1897 | assert(s); | |
1898 | ||
1899 | if (s->type == SERVICE_DBUS && !s->bus_name_good) | |
1900 | return false; | |
1901 | ||
1902 | main_pid_ok = main_pid_good(s); | |
1903 | if (main_pid_ok > 0) /* It's alive */ | |
1904 | return true; | |
1905 | if (main_pid_ok == 0) /* It's dead */ | |
1906 | return false; | |
1907 | ||
1908 | /* OK, we don't know anything about the main PID, maybe | |
1909 | * because there is none. Let's check the control group | |
1910 | * instead. */ | |
1911 | ||
1912 | return cgroup_good(s) != 0; | |
1913 | } | |
1914 | ||
f42806df | 1915 | static void service_enter_running(Service *s, ServiceResult f) { |
80876c20 LP |
1916 | assert(s); |
1917 | ||
a0fef983 | 1918 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1919 | s->result = f; |
80876c20 | 1920 | |
089b64d5 LP |
1921 | service_unwatch_control_pid(s); |
1922 | ||
ec5b1452 LP |
1923 | if (s->result != SERVICE_SUCCESS) |
1924 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); | |
1925 | else if (service_good(s)) { | |
308d72dc | 1926 | |
ec5b1452 | 1927 | /* If there are any queued up sd_notify() notifications, process them now */ |
308d72dc LP |
1928 | if (s->notify_state == NOTIFY_RELOADING) |
1929 | service_enter_reload_by_notify(s); | |
1930 | else if (s->notify_state == NOTIFY_STOPPING) | |
1931 | service_enter_stop_by_notify(s); | |
36c16a7c | 1932 | else { |
308d72dc | 1933 | service_set_state(s, SERVICE_RUNNING); |
36c16a7c LP |
1934 | service_arm_timer(s, usec_add(UNIT(s)->active_enter_timestamp.monotonic, s->runtime_max_usec)); |
1935 | } | |
308d72dc | 1936 | |
ec5b1452 | 1937 | } else if (s->remain_after_exit) |
80876c20 LP |
1938 | service_set_state(s, SERVICE_EXITED); |
1939 | else | |
f42806df | 1940 | service_enter_stop(s, SERVICE_SUCCESS); |
80876c20 LP |
1941 | } |
1942 | ||
034c6ed7 LP |
1943 | static void service_enter_start_post(Service *s) { |
1944 | int r; | |
1945 | assert(s); | |
1946 | ||
5e94833f | 1947 | service_unwatch_control_pid(s); |
842129f5 | 1948 | service_reset_watchdog(s); |
bb242b7b | 1949 | |
117dcc57 ZJS |
1950 | s->control_command = s->exec_command[SERVICE_EXEC_START_POST]; |
1951 | if (s->control_command) { | |
867b3b7d LP |
1952 | s->control_command_id = SERVICE_EXEC_START_POST; |
1953 | ||
ecedd90f LP |
1954 | r = service_spawn(s, |
1955 | s->control_command, | |
21b2ce39 | 1956 | s->timeout_start_usec, |
1703fa41 | 1957 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL, |
ecedd90f LP |
1958 | &s->control_pid); |
1959 | if (r < 0) | |
034c6ed7 LP |
1960 | goto fail; |
1961 | ||
80876c20 LP |
1962 | service_set_state(s, SERVICE_START_POST); |
1963 | } else | |
f42806df | 1964 | service_enter_running(s, SERVICE_SUCCESS); |
034c6ed7 LP |
1965 | |
1966 | return; | |
1967 | ||
1968 | fail: | |
f2341e0a | 1969 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-post' task: %m"); |
f42806df | 1970 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1971 | } |
1972 | ||
e9a4f676 | 1973 | static void service_kill_control_process(Service *s) { |
a6951a50 | 1974 | int r; |
4ad49000 | 1975 | |
a6951a50 LP |
1976 | assert(s); |
1977 | ||
e9a4f676 LP |
1978 | if (s->control_pid <= 0) |
1979 | return; | |
4ad49000 | 1980 | |
e9a4f676 LP |
1981 | r = kill_and_sigcont(s->control_pid, SIGKILL); |
1982 | if (r < 0) { | |
1983 | _cleanup_free_ char *comm = NULL; | |
a6951a50 | 1984 | |
e9a4f676 | 1985 | (void) get_process_comm(s->control_pid, &comm); |
a6951a50 | 1986 | |
e9a4f676 LP |
1987 | log_unit_debug_errno(UNIT(s), r, "Failed to kill control process " PID_FMT " (%s), ignoring: %m", |
1988 | s->control_pid, strna(comm)); | |
a6951a50 | 1989 | } |
4ad49000 LP |
1990 | } |
1991 | ||
034c6ed7 | 1992 | static void service_enter_start(Service *s) { |
4ad49000 | 1993 | ExecCommand *c; |
36c16a7c | 1994 | usec_t timeout; |
034c6ed7 LP |
1995 | pid_t pid; |
1996 | int r; | |
1997 | ||
1998 | assert(s); | |
1999 | ||
41efeaec LP |
2000 | service_unwatch_control_pid(s); |
2001 | service_unwatch_main_pid(s); | |
80876c20 | 2002 | |
a4634b21 LP |
2003 | unit_warn_leftover_processes(UNIT(s)); |
2004 | ||
867b3b7d LP |
2005 | if (s->type == SERVICE_FORKING) { |
2006 | s->control_command_id = SERVICE_EXEC_START; | |
2007 | c = s->control_command = s->exec_command[SERVICE_EXEC_START]; | |
2008 | ||
2009 | s->main_command = NULL; | |
2010 | } else { | |
2011 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
2012 | s->control_command = NULL; | |
2013 | ||
2014 | c = s->main_command = s->exec_command[SERVICE_EXEC_START]; | |
2015 | } | |
34e9ba66 | 2016 | |
96fb8242 | 2017 | if (!c) { |
47fffb35 LP |
2018 | if (s->type != SERVICE_ONESHOT) { |
2019 | /* There's no command line configured for the main command? Hmm, that is strange. This can only | |
2020 | * happen if the configuration changes at runtime. In this case, let's enter a failure | |
2021 | * state. */ | |
b8b846d7 | 2022 | log_unit_error(UNIT(s), "There's no 'start' task anymore we could start."); |
47fffb35 LP |
2023 | r = -ENXIO; |
2024 | goto fail; | |
2025 | } | |
2026 | ||
ef5ae8e7 ZJS |
2027 | /* We force a fake state transition here. Otherwise, the unit would go directly from |
2028 | * SERVICE_DEAD to SERVICE_DEAD without SERVICE_ACTIVATING or SERVICE_ACTIVE | |
2029 | * inbetween. This way we can later trigger actions that depend on the state | |
2030 | * transition, including SuccessAction=. */ | |
2031 | service_set_state(s, SERVICE_START); | |
2032 | ||
96fb8242 LP |
2033 | service_enter_start_post(s); |
2034 | return; | |
2035 | } | |
2036 | ||
36c16a7c LP |
2037 | if (IN_SET(s->type, SERVICE_SIMPLE, SERVICE_IDLE)) |
2038 | /* For simple + idle this is the main process. We don't apply any timeout here, but | |
2039 | * service_enter_running() will later apply the .runtime_max_usec timeout. */ | |
2040 | timeout = USEC_INFINITY; | |
2041 | else | |
2042 | timeout = s->timeout_start_usec; | |
2043 | ||
ecedd90f LP |
2044 | r = service_spawn(s, |
2045 | c, | |
36c16a7c | 2046 | timeout, |
1703fa41 | 2047 | EXEC_PASS_FDS|EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_SET_WATCHDOG, |
ecedd90f LP |
2048 | &pid); |
2049 | if (r < 0) | |
034c6ed7 LP |
2050 | goto fail; |
2051 | ||
36c16a7c | 2052 | if (IN_SET(s->type, SERVICE_SIMPLE, SERVICE_IDLE)) { |
034c6ed7 LP |
2053 | /* For simple services we immediately start |
2054 | * the START_POST binaries. */ | |
2055 | ||
5925dd3c | 2056 | service_set_main_pid(s, pid); |
034c6ed7 LP |
2057 | service_enter_start_post(s); |
2058 | ||
2059 | } else if (s->type == SERVICE_FORKING) { | |
2060 | ||
2061 | /* For forking services we wait until the start | |
2062 | * process exited. */ | |
2063 | ||
e55224ca | 2064 | s->control_pid = pid; |
80876c20 LP |
2065 | service_set_state(s, SERVICE_START); |
2066 | ||
5686391b | 2067 | } else if (IN_SET(s->type, SERVICE_ONESHOT, SERVICE_DBUS, SERVICE_NOTIFY, SERVICE_EXEC)) { |
7d55e835 | 2068 | |
5686391b | 2069 | /* For oneshot services we wait until the start process exited, too, but it is our main process. */ |
7d55e835 | 2070 | |
5686391b LP |
2071 | /* For D-Bus services we know the main pid right away, but wait for the bus name to appear on the |
2072 | * bus. 'notify' and 'exec' services are similar. */ | |
05e343b7 | 2073 | |
5925dd3c | 2074 | service_set_main_pid(s, pid); |
80876c20 | 2075 | service_set_state(s, SERVICE_START); |
034c6ed7 LP |
2076 | } else |
2077 | assert_not_reached("Unknown service type"); | |
2078 | ||
2079 | return; | |
2080 | ||
2081 | fail: | |
f2341e0a | 2082 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start' task: %m"); |
c3fda31d | 2083 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
2084 | } |
2085 | ||
2086 | static void service_enter_start_pre(Service *s) { | |
2087 | int r; | |
2088 | ||
2089 | assert(s); | |
2090 | ||
5e94833f LP |
2091 | service_unwatch_control_pid(s); |
2092 | ||
117dcc57 ZJS |
2093 | s->control_command = s->exec_command[SERVICE_EXEC_START_PRE]; |
2094 | if (s->control_command) { | |
8f53a7b8 | 2095 | |
a4634b21 LP |
2096 | unit_warn_leftover_processes(UNIT(s)); |
2097 | ||
867b3b7d LP |
2098 | s->control_command_id = SERVICE_EXEC_START_PRE; |
2099 | ||
ecedd90f LP |
2100 | r = service_spawn(s, |
2101 | s->control_command, | |
21b2ce39 | 2102 | s->timeout_start_usec, |
1703fa41 | 2103 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_APPLY_TTY_STDIN, |
ecedd90f LP |
2104 | &s->control_pid); |
2105 | if (r < 0) | |
034c6ed7 LP |
2106 | goto fail; |
2107 | ||
80876c20 LP |
2108 | service_set_state(s, SERVICE_START_PRE); |
2109 | } else | |
034c6ed7 LP |
2110 | service_enter_start(s); |
2111 | ||
2112 | return; | |
2113 | ||
2114 | fail: | |
f2341e0a | 2115 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-pre' task: %m"); |
f42806df | 2116 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
034c6ed7 LP |
2117 | } |
2118 | ||
2119 | static void service_enter_restart(Service *s) { | |
4afd3348 | 2120 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
034c6ed7 | 2121 | int r; |
398ef8ba | 2122 | |
034c6ed7 LP |
2123 | assert(s); |
2124 | ||
a8bb2e65 LP |
2125 | if (UNIT(s)->job && UNIT(s)->job->type == JOB_STOP) { |
2126 | /* Don't restart things if we are going down anyway */ | |
f2341e0a | 2127 | log_unit_info(UNIT(s), "Stop job pending for unit, delaying automatic restart."); |
2edfa366 | 2128 | |
36c16a7c | 2129 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->restart_usec)); |
a8bb2e65 | 2130 | if (r < 0) |
2edfa366 | 2131 | goto fail; |
feae8adb DW |
2132 | |
2133 | return; | |
2edfa366 LP |
2134 | } |
2135 | ||
48bb5876 DW |
2136 | /* Any units that are bound to this service must also be |
2137 | * restarted. We use JOB_RESTART (instead of the more obvious | |
2138 | * JOB_START) here so that those dependency jobs will be added | |
2139 | * as well. */ | |
4bd29fe5 | 2140 | r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_FAIL, &error, NULL); |
48bb5876 | 2141 | if (r < 0) |
034c6ed7 LP |
2142 | goto fail; |
2143 | ||
7a0019d3 LP |
2144 | /* Count the jobs we enqueue for restarting. This counter is maintained as long as the unit isn't fully |
2145 | * stopped, i.e. as long as it remains up or remains in auto-start states. The use can reset the counter | |
2146 | * explicitly however via the usual "systemctl reset-failure" logic. */ | |
2147 | s->n_restarts ++; | |
2148 | s->flush_n_restarts = false; | |
2149 | ||
2150 | log_struct(LOG_INFO, | |
2151 | "MESSAGE_ID=" SD_MESSAGE_UNIT_RESTART_SCHEDULED_STR, | |
2152 | LOG_UNIT_ID(UNIT(s)), | |
f1c50bec | 2153 | LOG_UNIT_INVOCATION_ID(UNIT(s)), |
7a0019d3 | 2154 | LOG_UNIT_MESSAGE(UNIT(s), "Scheduled restart job, restart counter is at %u.", s->n_restarts), |
a1230ff9 | 2155 | "N_RESTARTS=%u", s->n_restarts); |
7a0019d3 LP |
2156 | |
2157 | /* Notify clients about changed restart counter */ | |
2158 | unit_add_to_dbus_queue(UNIT(s)); | |
2159 | ||
a8bb2e65 LP |
2160 | /* Note that we stay in the SERVICE_AUTO_RESTART state here, |
2161 | * it will be canceled as part of the service_stop() call that | |
2162 | * is executed as part of JOB_RESTART. */ | |
2163 | ||
034c6ed7 LP |
2164 | return; |
2165 | ||
2166 | fail: | |
f2341e0a | 2167 | log_unit_warning(UNIT(s), "Failed to schedule restart job: %s", bus_error_message(&error, -r)); |
f42806df | 2168 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); |
034c6ed7 LP |
2169 | } |
2170 | ||
308d72dc | 2171 | static void service_enter_reload_by_notify(Service *s) { |
15d167f8 JW |
2172 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
2173 | int r; | |
2174 | ||
308d72dc LP |
2175 | assert(s); |
2176 | ||
36c16a7c | 2177 | service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_start_usec)); |
308d72dc | 2178 | service_set_state(s, SERVICE_RELOAD); |
15d167f8 JW |
2179 | |
2180 | /* service_enter_reload_by_notify is never called during a reload, thus no loops are possible. */ | |
2181 | r = manager_propagate_reload(UNIT(s)->manager, UNIT(s), JOB_FAIL, &error); | |
2182 | if (r < 0) | |
2183 | log_unit_warning(UNIT(s), "Failed to schedule propagation of reload: %s", bus_error_message(&error, -r)); | |
308d72dc LP |
2184 | } |
2185 | ||
034c6ed7 LP |
2186 | static void service_enter_reload(Service *s) { |
2187 | int r; | |
2188 | ||
2189 | assert(s); | |
2190 | ||
5e94833f | 2191 | service_unwatch_control_pid(s); |
95c906ae | 2192 | s->reload_result = SERVICE_SUCCESS; |
5e94833f | 2193 | |
117dcc57 ZJS |
2194 | s->control_command = s->exec_command[SERVICE_EXEC_RELOAD]; |
2195 | if (s->control_command) { | |
867b3b7d LP |
2196 | s->control_command_id = SERVICE_EXEC_RELOAD; |
2197 | ||
ecedd90f LP |
2198 | r = service_spawn(s, |
2199 | s->control_command, | |
21b2ce39 | 2200 | s->timeout_start_usec, |
1703fa41 | 2201 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL, |
ecedd90f LP |
2202 | &s->control_pid); |
2203 | if (r < 0) | |
034c6ed7 LP |
2204 | goto fail; |
2205 | ||
80876c20 LP |
2206 | service_set_state(s, SERVICE_RELOAD); |
2207 | } else | |
f42806df | 2208 | service_enter_running(s, SERVICE_SUCCESS); |
034c6ed7 LP |
2209 | |
2210 | return; | |
2211 | ||
2212 | fail: | |
f2341e0a | 2213 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'reload' task: %m"); |
f42806df LP |
2214 | s->reload_result = SERVICE_FAILURE_RESOURCES; |
2215 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
2216 | } |
2217 | ||
f42806df | 2218 | static void service_run_next_control(Service *s) { |
36c16a7c | 2219 | usec_t timeout; |
034c6ed7 LP |
2220 | int r; |
2221 | ||
2222 | assert(s); | |
2223 | assert(s->control_command); | |
2224 | assert(s->control_command->command_next); | |
2225 | ||
34e9ba66 | 2226 | assert(s->control_command_id != SERVICE_EXEC_START); |
034c6ed7 | 2227 | |
34e9ba66 | 2228 | s->control_command = s->control_command->command_next; |
5e94833f LP |
2229 | service_unwatch_control_pid(s); |
2230 | ||
36c16a7c LP |
2231 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
2232 | timeout = s->timeout_start_usec; | |
2233 | else | |
2234 | timeout = s->timeout_stop_usec; | |
2235 | ||
ecedd90f LP |
2236 | r = service_spawn(s, |
2237 | s->control_command, | |
36c16a7c | 2238 | timeout, |
1703fa41 | 2239 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL| |
136dc4c4 LP |
2240 | (IN_SET(s->control_command_id, SERVICE_EXEC_START_PRE, SERVICE_EXEC_STOP_POST) ? EXEC_APPLY_TTY_STDIN : 0)| |
2241 | (IN_SET(s->control_command_id, SERVICE_EXEC_STOP, SERVICE_EXEC_STOP_POST) ? EXEC_SETENV_RESULT : 0), | |
ecedd90f LP |
2242 | &s->control_pid); |
2243 | if (r < 0) | |
034c6ed7 LP |
2244 | goto fail; |
2245 | ||
2246 | return; | |
2247 | ||
2248 | fail: | |
f2341e0a | 2249 | log_unit_warning_errno(UNIT(s), r, "Failed to run next control task: %m"); |
034c6ed7 | 2250 | |
4cd9fa81 | 2251 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START_POST, SERVICE_STOP)) |
f42806df | 2252 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 | 2253 | else if (s->state == SERVICE_STOP_POST) |
f42806df | 2254 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
e2f3b44c | 2255 | else if (s->state == SERVICE_RELOAD) { |
f42806df LP |
2256 | s->reload_result = SERVICE_FAILURE_RESOURCES; |
2257 | service_enter_running(s, SERVICE_SUCCESS); | |
e2f3b44c | 2258 | } else |
f42806df | 2259 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
5cb5a6ff LP |
2260 | } |
2261 | ||
f42806df | 2262 | static void service_run_next_main(Service *s) { |
34e9ba66 LP |
2263 | pid_t pid; |
2264 | int r; | |
2265 | ||
2266 | assert(s); | |
867b3b7d LP |
2267 | assert(s->main_command); |
2268 | assert(s->main_command->command_next); | |
2269 | assert(s->type == SERVICE_ONESHOT); | |
34e9ba66 | 2270 | |
867b3b7d | 2271 | s->main_command = s->main_command->command_next; |
34e9ba66 LP |
2272 | service_unwatch_main_pid(s); |
2273 | ||
ecedd90f LP |
2274 | r = service_spawn(s, |
2275 | s->main_command, | |
21b2ce39 | 2276 | s->timeout_start_usec, |
1703fa41 | 2277 | EXEC_PASS_FDS|EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_SET_WATCHDOG, |
ecedd90f LP |
2278 | &pid); |
2279 | if (r < 0) | |
34e9ba66 LP |
2280 | goto fail; |
2281 | ||
2282 | service_set_main_pid(s, pid); | |
2283 | ||
2284 | return; | |
2285 | ||
2286 | fail: | |
f2341e0a | 2287 | log_unit_warning_errno(UNIT(s), r, "Failed to run next main task: %m"); |
f42806df | 2288 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
34e9ba66 LP |
2289 | } |
2290 | ||
87f0e418 LP |
2291 | static int service_start(Unit *u) { |
2292 | Service *s = SERVICE(u); | |
07299350 | 2293 | int r; |
5cb5a6ff LP |
2294 | |
2295 | assert(s); | |
2296 | ||
034c6ed7 LP |
2297 | /* We cannot fulfill this request right now, try again later |
2298 | * please! */ | |
a00973af | 2299 | if (IN_SET(s->state, |
c87700a1 | 2300 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
a00973af | 2301 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) |
5cb5a6ff LP |
2302 | return -EAGAIN; |
2303 | ||
034c6ed7 | 2304 | /* Already on it! */ |
a00973af | 2305 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST)) |
034c6ed7 LP |
2306 | return 0; |
2307 | ||
2e9d6c12 | 2308 | /* A service that will be restarted must be stopped first to |
7f2cddae | 2309 | * trigger BindsTo and/or OnFailure dependencies. If a user |
2e9d6c12 | 2310 | * does not want to wait for the holdoff time to elapse, the |
d4943dc7 LP |
2311 | * service should be manually restarted, not started. We |
2312 | * simply return EAGAIN here, so that any start jobs stay | |
2313 | * queued, and assume that the auto restart timer will | |
2314 | * eventually trigger the restart. */ | |
2315 | if (s->state == SERVICE_AUTO_RESTART) | |
a8bb2e65 | 2316 | return -EAGAIN; |
2e9d6c12 | 2317 | |
a00973af | 2318 | assert(IN_SET(s->state, SERVICE_DEAD, SERVICE_FAILED)); |
5cb5a6ff | 2319 | |
07299350 LP |
2320 | /* Make sure we don't enter a busy loop of some kind. */ |
2321 | r = unit_start_limit_test(u); | |
2322 | if (r < 0) { | |
2323 | service_enter_dead(s, SERVICE_FAILURE_START_LIMIT_HIT, false); | |
2324 | return r; | |
2325 | } | |
2326 | ||
4b58153d LP |
2327 | r = unit_acquire_invocation_id(u); |
2328 | if (r < 0) | |
2329 | return r; | |
2330 | ||
f42806df LP |
2331 | s->result = SERVICE_SUCCESS; |
2332 | s->reload_result = SERVICE_SUCCESS; | |
034c6ed7 | 2333 | s->main_pid_known = false; |
6dfa5494 | 2334 | s->main_pid_alien = false; |
47342320 | 2335 | s->forbid_restart = false; |
3c7416b6 | 2336 | |
a1e58e8e | 2337 | s->status_text = mfree(s->status_text); |
8cfdb077 LP |
2338 | s->status_errno = 0; |
2339 | ||
308d72dc LP |
2340 | s->notify_state = NOTIFY_UNKNOWN; |
2341 | ||
2787d83c M |
2342 | s->watchdog_override_enable = false; |
2343 | s->watchdog_override_usec = 0; | |
2344 | ||
6a1d4d9f LP |
2345 | exec_command_reset_status_list_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); |
2346 | exec_status_reset(&s->main_exec_status); | |
2347 | ||
7a0019d3 LP |
2348 | /* This is not an automatic restart? Flush the restart counter then */ |
2349 | if (s->flush_n_restarts) { | |
2350 | s->n_restarts = 0; | |
2351 | s->flush_n_restarts = false; | |
2352 | } | |
2353 | ||
6a1d4d9f LP |
2354 | u->reset_accounting = true; |
2355 | ||
034c6ed7 | 2356 | service_enter_start_pre(s); |
82a2b6bb | 2357 | return 1; |
5cb5a6ff LP |
2358 | } |
2359 | ||
87f0e418 LP |
2360 | static int service_stop(Unit *u) { |
2361 | Service *s = SERVICE(u); | |
5cb5a6ff LP |
2362 | |
2363 | assert(s); | |
2364 | ||
a509f0e6 | 2365 | /* Don't create restart jobs from manual stops. */ |
47342320 | 2366 | s->forbid_restart = true; |
034c6ed7 | 2367 | |
e537352b | 2368 | /* Already on it */ |
a00973af | 2369 | if (IN_SET(s->state, |
c87700a1 | 2370 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
a00973af | 2371 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) |
e537352b LP |
2372 | return 0; |
2373 | ||
f0c7b229 | 2374 | /* A restart will be scheduled or is in progress. */ |
034c6ed7 | 2375 | if (s->state == SERVICE_AUTO_RESTART) { |
0c7f15b3 | 2376 | service_set_state(s, SERVICE_DEAD); |
034c6ed7 LP |
2377 | return 0; |
2378 | } | |
2379 | ||
3f6c78dc LP |
2380 | /* If there's already something running we go directly into |
2381 | * kill mode. */ | |
a00973af | 2382 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RELOAD)) { |
f42806df | 2383 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
3f6c78dc LP |
2384 | return 0; |
2385 | } | |
5cb5a6ff | 2386 | |
a00973af | 2387 | assert(IN_SET(s->state, SERVICE_RUNNING, SERVICE_EXITED)); |
3a762661 | 2388 | |
f42806df | 2389 | service_enter_stop(s, SERVICE_SUCCESS); |
82a2b6bb | 2390 | return 1; |
5cb5a6ff LP |
2391 | } |
2392 | ||
87f0e418 LP |
2393 | static int service_reload(Unit *u) { |
2394 | Service *s = SERVICE(u); | |
034c6ed7 LP |
2395 | |
2396 | assert(s); | |
2397 | ||
3742095b | 2398 | assert(IN_SET(s->state, SERVICE_RUNNING, SERVICE_EXITED)); |
034c6ed7 LP |
2399 | |
2400 | service_enter_reload(s); | |
2d018ae2 | 2401 | return 1; |
5cb5a6ff LP |
2402 | } |
2403 | ||
44a6b1b6 | 2404 | _pure_ static bool service_can_reload(Unit *u) { |
87f0e418 | 2405 | Service *s = SERVICE(u); |
034c6ed7 LP |
2406 | |
2407 | assert(s); | |
2408 | ||
2409 | return !!s->exec_command[SERVICE_EXEC_RELOAD]; | |
2410 | } | |
2411 | ||
e266c068 MS |
2412 | static unsigned service_exec_command_index(Unit *u, ServiceExecCommand id, ExecCommand *current) { |
2413 | Service *s = SERVICE(u); | |
2414 | unsigned idx = 0; | |
2415 | ExecCommand *first, *c; | |
2416 | ||
2417 | assert(s); | |
2418 | ||
2419 | first = s->exec_command[id]; | |
2420 | ||
2421 | /* Figure out where we are in the list by walking back to the beginning */ | |
2422 | for (c = current; c != first; c = c->command_prev) | |
2423 | idx++; | |
2424 | ||
2425 | return idx; | |
2426 | } | |
2427 | ||
2428 | static int service_serialize_exec_command(Unit *u, FILE *f, ExecCommand *command) { | |
2429 | Service *s = SERVICE(u); | |
2430 | ServiceExecCommand id; | |
2431 | unsigned idx; | |
2432 | const char *type; | |
2433 | char **arg; | |
e266c068 MS |
2434 | _cleanup_free_ char *args = NULL, *p = NULL; |
2435 | size_t allocated = 0, length = 0; | |
2436 | ||
2437 | assert(s); | |
2438 | assert(f); | |
2439 | ||
2440 | if (!command) | |
2441 | return 0; | |
2442 | ||
2443 | if (command == s->control_command) { | |
2444 | type = "control"; | |
2445 | id = s->control_command_id; | |
2446 | } else { | |
2447 | type = "main"; | |
2448 | id = SERVICE_EXEC_START; | |
2449 | } | |
2450 | ||
2451 | idx = service_exec_command_index(u, id, command); | |
2452 | ||
2453 | STRV_FOREACH(arg, command->argv) { | |
2454 | size_t n; | |
2455 | _cleanup_free_ char *e = NULL; | |
2456 | ||
2457 | e = xescape(*arg, WHITESPACE); | |
2458 | if (!e) | |
2459 | return -ENOMEM; | |
2460 | ||
2461 | n = strlen(e); | |
2462 | if (!GREEDY_REALLOC(args, allocated, length + 1 + n + 1)) | |
2463 | return -ENOMEM; | |
2464 | ||
2465 | if (length > 0) | |
2466 | args[length++] = ' '; | |
2467 | ||
2468 | memcpy(args + length, e, n); | |
2469 | length += n; | |
2470 | } | |
2471 | ||
2472 | if (!GREEDY_REALLOC(args, allocated, length + 1)) | |
2473 | return -ENOMEM; | |
2474 | args[length++] = 0; | |
2475 | ||
2476 | p = xescape(command->path, WHITESPACE); | |
2477 | if (!p) | |
2478 | return -ENOMEM; | |
2479 | ||
2480 | fprintf(f, "%s-command=%s %u %s %s\n", type, service_exec_command_to_string(id), idx, p, args); | |
2481 | ||
2482 | return 0; | |
2483 | } | |
2484 | ||
a16e1123 LP |
2485 | static int service_serialize(Unit *u, FILE *f, FDSet *fds) { |
2486 | Service *s = SERVICE(u); | |
2339fc93 | 2487 | ServiceFDStore *fs; |
a34ceba6 | 2488 | int r; |
a16e1123 LP |
2489 | |
2490 | assert(u); | |
2491 | assert(f); | |
2492 | assert(fds); | |
2493 | ||
2494 | unit_serialize_item(u, f, "state", service_state_to_string(s->state)); | |
f42806df LP |
2495 | unit_serialize_item(u, f, "result", service_result_to_string(s->result)); |
2496 | unit_serialize_item(u, f, "reload-result", service_result_to_string(s->reload_result)); | |
a16e1123 LP |
2497 | |
2498 | if (s->control_pid > 0) | |
f06db334 | 2499 | unit_serialize_item_format(u, f, "control-pid", PID_FMT, s->control_pid); |
a16e1123 | 2500 | |
5925dd3c | 2501 | if (s->main_pid_known && s->main_pid > 0) |
ccd06097 | 2502 | unit_serialize_item_format(u, f, "main-pid", PID_FMT, s->main_pid); |
a16e1123 LP |
2503 | |
2504 | unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known)); | |
de1d4f9b | 2505 | unit_serialize_item(u, f, "bus-name-good", yes_no(s->bus_name_good)); |
d8ccf5fd | 2506 | unit_serialize_item(u, f, "bus-name-owner", s->bus_name_owner); |
a16e1123 | 2507 | |
7a0019d3 | 2508 | unit_serialize_item_format(u, f, "n-restarts", "%u", s->n_restarts); |
7f923884 | 2509 | unit_serialize_item(u, f, "flush-n-restarts", yes_no(s->flush_n_restarts)); |
7a0019d3 | 2510 | |
a34ceba6 LP |
2511 | r = unit_serialize_item_escaped(u, f, "status-text", s->status_text); |
2512 | if (r < 0) | |
2513 | return r; | |
3a2776bc | 2514 | |
e266c068 MS |
2515 | service_serialize_exec_command(u, f, s->control_command); |
2516 | service_serialize_exec_command(u, f, s->main_command); | |
a16e1123 | 2517 | |
a34ceba6 LP |
2518 | r = unit_serialize_item_fd(u, f, fds, "stdin-fd", s->stdin_fd); |
2519 | if (r < 0) | |
2520 | return r; | |
2521 | r = unit_serialize_item_fd(u, f, fds, "stdout-fd", s->stdout_fd); | |
2522 | if (r < 0) | |
2523 | return r; | |
2524 | r = unit_serialize_item_fd(u, f, fds, "stderr-fd", s->stderr_fd); | |
2525 | if (r < 0) | |
2526 | return r; | |
e44da745 | 2527 | |
5686391b LP |
2528 | if (s->exec_fd_event_source) { |
2529 | r = unit_serialize_item_fd(u, f, fds, "exec-fd", sd_event_source_get_io_fd(s->exec_fd_event_source)); | |
2530 | if (r < 0) | |
2531 | return r; | |
2532 | unit_serialize_item(u, f, "exec-fd-hot", yes_no(s->exec_fd_hot)); | |
2533 | } | |
2534 | ||
9dfb64f8 ZJS |
2535 | if (UNIT_ISSET(s->accept_socket)) { |
2536 | r = unit_serialize_item(u, f, "accept-socket", UNIT_DEREF(s->accept_socket)->id); | |
2537 | if (r < 0) | |
2538 | return r; | |
2539 | } | |
2540 | ||
a34ceba6 | 2541 | r = unit_serialize_item_fd(u, f, fds, "socket-fd", s->socket_fd); |
a34ceba6 LP |
2542 | if (r < 0) |
2543 | return r; | |
e44da745 | 2544 | |
2339fc93 | 2545 | LIST_FOREACH(fd_store, fs, s->fd_store) { |
8dd4c05b | 2546 | _cleanup_free_ char *c = NULL; |
2339fc93 LP |
2547 | int copy; |
2548 | ||
2549 | copy = fdset_put_dup(fds, fs->fd); | |
2550 | if (copy < 0) | |
2551 | return copy; | |
2552 | ||
8dd4c05b LP |
2553 | c = cescape(fs->fdname); |
2554 | ||
2555 | unit_serialize_item_format(u, f, "fd-store-fd", "%i %s", copy, strempty(c)); | |
2339fc93 LP |
2556 | } |
2557 | ||
ecdbca40 | 2558 | if (s->main_exec_status.pid > 0) { |
f06db334 LP |
2559 | unit_serialize_item_format(u, f, "main-exec-status-pid", PID_FMT, s->main_exec_status.pid); |
2560 | dual_timestamp_serialize(f, "main-exec-status-start", &s->main_exec_status.start_timestamp); | |
2561 | dual_timestamp_serialize(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp); | |
ecdbca40 | 2562 | |
799fd0fd | 2563 | if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) { |
f06db334 LP |
2564 | unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code); |
2565 | unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status); | |
ecdbca40 LP |
2566 | } |
2567 | } | |
f06db334 | 2568 | |
36b693a6 | 2569 | dual_timestamp_serialize(f, "watchdog-timestamp", &s->watchdog_timestamp); |
ecdbca40 | 2570 | |
a34ceba6 | 2571 | unit_serialize_item(u, f, "forbid-restart", yes_no(s->forbid_restart)); |
6aca9a58 | 2572 | |
2787d83c M |
2573 | if (s->watchdog_override_enable) |
2574 | unit_serialize_item_format(u, f, "watchdog-override-usec", USEC_FMT, s->watchdog_override_usec); | |
2575 | ||
a16e1123 LP |
2576 | return 0; |
2577 | } | |
2578 | ||
e266c068 MS |
2579 | static int service_deserialize_exec_command(Unit *u, const char *key, const char *value) { |
2580 | Service *s = SERVICE(u); | |
2581 | int r; | |
2582 | unsigned idx = 0, i; | |
2583 | bool control, found = false; | |
2584 | ServiceExecCommand id = _SERVICE_EXEC_COMMAND_INVALID; | |
2585 | ExecCommand *command = NULL; | |
6eeec374 | 2586 | _cleanup_free_ char *path = NULL; |
e266c068 MS |
2587 | _cleanup_strv_free_ char **argv = NULL; |
2588 | ||
2589 | enum ExecCommandState { | |
2590 | STATE_EXEC_COMMAND_TYPE, | |
2591 | STATE_EXEC_COMMAND_INDEX, | |
2592 | STATE_EXEC_COMMAND_PATH, | |
2593 | STATE_EXEC_COMMAND_ARGS, | |
2594 | _STATE_EXEC_COMMAND_MAX, | |
2595 | _STATE_EXEC_COMMAND_INVALID = -1, | |
2596 | } state; | |
2597 | ||
2598 | assert(s); | |
2599 | assert(key); | |
2600 | assert(value); | |
2601 | ||
2602 | control = streq(key, "control-command"); | |
2603 | ||
2604 | state = STATE_EXEC_COMMAND_TYPE; | |
2605 | ||
2606 | for (;;) { | |
2607 | _cleanup_free_ char *arg = NULL; | |
2608 | ||
2609 | r = extract_first_word(&value, &arg, NULL, EXTRACT_CUNESCAPE); | |
2610 | if (r == 0) | |
2611 | break; | |
2612 | else if (r < 0) | |
2613 | return r; | |
2614 | ||
2615 | switch (state) { | |
2616 | case STATE_EXEC_COMMAND_TYPE: | |
2617 | id = service_exec_command_from_string(arg); | |
2618 | if (id < 0) | |
2619 | return -EINVAL; | |
2620 | ||
2621 | state = STATE_EXEC_COMMAND_INDEX; | |
2622 | break; | |
2623 | case STATE_EXEC_COMMAND_INDEX: | |
2624 | r = safe_atou(arg, &idx); | |
2625 | if (r < 0) | |
2626 | return -EINVAL; | |
2627 | ||
2628 | state = STATE_EXEC_COMMAND_PATH; | |
2629 | break; | |
2630 | case STATE_EXEC_COMMAND_PATH: | |
ae2a15bc | 2631 | path = TAKE_PTR(arg); |
e266c068 MS |
2632 | state = STATE_EXEC_COMMAND_ARGS; |
2633 | ||
2634 | if (!path_is_absolute(path)) | |
2635 | return -EINVAL; | |
2636 | break; | |
2637 | case STATE_EXEC_COMMAND_ARGS: | |
2638 | r = strv_extend(&argv, arg); | |
2639 | if (r < 0) | |
2640 | return -ENOMEM; | |
2641 | break; | |
2642 | default: | |
2643 | assert_not_reached("Unknown error at deserialization of exec command"); | |
2644 | break; | |
2645 | } | |
2646 | } | |
2647 | ||
2648 | if (state != STATE_EXEC_COMMAND_ARGS) | |
2649 | return -EINVAL; | |
2650 | ||
2651 | /* Let's check whether exec command on given offset matches data that we just deserialized */ | |
2652 | for (command = s->exec_command[id], i = 0; command; command = command->command_next, i++) { | |
2653 | if (i != idx) | |
2654 | continue; | |
2655 | ||
2656 | found = strv_equal(argv, command->argv) && streq(command->path, path); | |
2657 | break; | |
2658 | } | |
2659 | ||
2660 | if (!found) { | |
2661 | /* Command at the index we serialized is different, let's look for command that exactly | |
2662 | * matches but is on different index. If there is no such command we will not resume execution. */ | |
2663 | for (command = s->exec_command[id]; command; command = command->command_next) | |
2664 | if (strv_equal(command->argv, argv) && streq(command->path, path)) | |
2665 | break; | |
2666 | } | |
2667 | ||
2668 | if (command && control) | |
2669 | s->control_command = command; | |
2670 | else if (command) | |
2671 | s->main_command = command; | |
2672 | else | |
2673 | log_unit_warning(u, "Current command vanished from the unit file, execution of the command list won't be resumed."); | |
2674 | ||
2675 | return 0; | |
2676 | } | |
2677 | ||
a16e1123 LP |
2678 | static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { |
2679 | Service *s = SERVICE(u); | |
2339fc93 | 2680 | int r; |
a16e1123 LP |
2681 | |
2682 | assert(u); | |
2683 | assert(key); | |
2684 | assert(value); | |
2685 | assert(fds); | |
2686 | ||
2687 | if (streq(key, "state")) { | |
2688 | ServiceState state; | |
2689 | ||
117dcc57 ZJS |
2690 | state = service_state_from_string(value); |
2691 | if (state < 0) | |
f2341e0a | 2692 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
2693 | else |
2694 | s->deserialized_state = state; | |
f42806df LP |
2695 | } else if (streq(key, "result")) { |
2696 | ServiceResult f; | |
2697 | ||
2698 | f = service_result_from_string(value); | |
2699 | if (f < 0) | |
f2341e0a | 2700 | log_unit_debug(u, "Failed to parse result value: %s", value); |
f42806df LP |
2701 | else if (f != SERVICE_SUCCESS) |
2702 | s->result = f; | |
2703 | ||
2704 | } else if (streq(key, "reload-result")) { | |
2705 | ServiceResult f; | |
2706 | ||
2707 | f = service_result_from_string(value); | |
2708 | if (f < 0) | |
f2341e0a | 2709 | log_unit_debug(u, "Failed to parse reload result value: %s", value); |
f42806df LP |
2710 | else if (f != SERVICE_SUCCESS) |
2711 | s->reload_result = f; | |
a16e1123 | 2712 | |
a16e1123 | 2713 | } else if (streq(key, "control-pid")) { |
5925dd3c | 2714 | pid_t pid; |
a16e1123 | 2715 | |
e364ad06 | 2716 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2717 | log_unit_debug(u, "Failed to parse control-pid value: %s", value); |
a16e1123 | 2718 | else |
e55224ca | 2719 | s->control_pid = pid; |
a16e1123 | 2720 | } else if (streq(key, "main-pid")) { |
5925dd3c | 2721 | pid_t pid; |
a16e1123 | 2722 | |
e364ad06 | 2723 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2724 | log_unit_debug(u, "Failed to parse main-pid value: %s", value); |
eabd3e56 LP |
2725 | else |
2726 | (void) service_set_main_pid(s, pid); | |
a16e1123 LP |
2727 | } else if (streq(key, "main-pid-known")) { |
2728 | int b; | |
2729 | ||
117dcc57 ZJS |
2730 | b = parse_boolean(value); |
2731 | if (b < 0) | |
f2341e0a | 2732 | log_unit_debug(u, "Failed to parse main-pid-known value: %s", value); |
a16e1123 LP |
2733 | else |
2734 | s->main_pid_known = b; | |
de1d4f9b WF |
2735 | } else if (streq(key, "bus-name-good")) { |
2736 | int b; | |
2737 | ||
2738 | b = parse_boolean(value); | |
2739 | if (b < 0) | |
2740 | log_unit_debug(u, "Failed to parse bus-name-good value: %s", value); | |
2741 | else | |
2742 | s->bus_name_good = b; | |
d8ccf5fd DM |
2743 | } else if (streq(key, "bus-name-owner")) { |
2744 | r = free_and_strdup(&s->bus_name_owner, value); | |
2745 | if (r < 0) | |
2746 | log_unit_error_errno(u, r, "Unable to deserialize current bus owner %s: %m", value); | |
3a2776bc LP |
2747 | } else if (streq(key, "status-text")) { |
2748 | char *t; | |
2749 | ||
f2341e0a LP |
2750 | r = cunescape(value, 0, &t); |
2751 | if (r < 0) | |
2752 | log_unit_debug_errno(u, r, "Failed to unescape status text: %s", value); | |
117dcc57 | 2753 | else { |
3a2776bc LP |
2754 | free(s->status_text); |
2755 | s->status_text = t; | |
2756 | } | |
2757 | ||
9dfb64f8 ZJS |
2758 | } else if (streq(key, "accept-socket")) { |
2759 | Unit *socket; | |
2760 | ||
2761 | r = manager_load_unit(u->manager, value, NULL, NULL, &socket); | |
2762 | if (r < 0) | |
2763 | log_unit_debug_errno(u, r, "Failed to load accept-socket unit: %s", value); | |
2764 | else { | |
7f7d01ed | 2765 | unit_ref_set(&s->accept_socket, u, socket); |
9dfb64f8 ZJS |
2766 | SOCKET(socket)->n_connections++; |
2767 | } | |
2768 | ||
a16e1123 LP |
2769 | } else if (streq(key, "socket-fd")) { |
2770 | int fd; | |
2771 | ||
2772 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 2773 | log_unit_debug(u, "Failed to parse socket-fd value: %s", value); |
a16e1123 | 2774 | else { |
574634bc | 2775 | asynchronous_close(s->socket_fd); |
a16e1123 LP |
2776 | s->socket_fd = fdset_remove(fds, fd); |
2777 | } | |
2339fc93 | 2778 | } else if (streq(key, "fd-store-fd")) { |
8dd4c05b LP |
2779 | const char *fdv; |
2780 | size_t pf; | |
2339fc93 LP |
2781 | int fd; |
2782 | ||
8dd4c05b LP |
2783 | pf = strcspn(value, WHITESPACE); |
2784 | fdv = strndupa(value, pf); | |
2785 | ||
2786 | if (safe_atoi(fdv, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 2787 | log_unit_debug(u, "Failed to parse fd-store-fd value: %s", value); |
2339fc93 | 2788 | else { |
8dd4c05b LP |
2789 | _cleanup_free_ char *t = NULL; |
2790 | const char *fdn; | |
2791 | ||
2792 | fdn = value + pf; | |
2793 | fdn += strspn(fdn, WHITESPACE); | |
2794 | (void) cunescape(fdn, 0, &t); | |
2795 | ||
2796 | r = service_add_fd_store(s, fd, t); | |
2339fc93 | 2797 | if (r < 0) |
f2341e0a | 2798 | log_unit_error_errno(u, r, "Failed to add fd to store: %m"); |
9021ff17 | 2799 | else |
2339fc93 LP |
2800 | fdset_remove(fds, fd); |
2801 | } | |
2802 | ||
ecdbca40 LP |
2803 | } else if (streq(key, "main-exec-status-pid")) { |
2804 | pid_t pid; | |
2805 | ||
e364ad06 | 2806 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2807 | log_unit_debug(u, "Failed to parse main-exec-status-pid value: %s", value); |
ecdbca40 LP |
2808 | else |
2809 | s->main_exec_status.pid = pid; | |
2810 | } else if (streq(key, "main-exec-status-code")) { | |
2811 | int i; | |
2812 | ||
e364ad06 | 2813 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 2814 | log_unit_debug(u, "Failed to parse main-exec-status-code value: %s", value); |
ecdbca40 LP |
2815 | else |
2816 | s->main_exec_status.code = i; | |
2817 | } else if (streq(key, "main-exec-status-status")) { | |
2818 | int i; | |
2819 | ||
e364ad06 | 2820 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 2821 | log_unit_debug(u, "Failed to parse main-exec-status-status value: %s", value); |
ecdbca40 LP |
2822 | else |
2823 | s->main_exec_status.status = i; | |
799fd0fd LP |
2824 | } else if (streq(key, "main-exec-status-start")) |
2825 | dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp); | |
2826 | else if (streq(key, "main-exec-status-exit")) | |
2827 | dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp); | |
a6927d7f MO |
2828 | else if (streq(key, "watchdog-timestamp")) |
2829 | dual_timestamp_deserialize(value, &s->watchdog_timestamp); | |
613b411c | 2830 | else if (streq(key, "forbid-restart")) { |
6aca9a58 SE |
2831 | int b; |
2832 | ||
2833 | b = parse_boolean(value); | |
2834 | if (b < 0) | |
f2341e0a | 2835 | log_unit_debug(u, "Failed to parse forbid-restart value: %s", value); |
6aca9a58 SE |
2836 | else |
2837 | s->forbid_restart = b; | |
a34ceba6 LP |
2838 | } else if (streq(key, "stdin-fd")) { |
2839 | int fd; | |
2840 | ||
2841 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2842 | log_unit_debug(u, "Failed to parse stdin-fd value: %s", value); | |
2843 | else { | |
2844 | asynchronous_close(s->stdin_fd); | |
2845 | s->stdin_fd = fdset_remove(fds, fd); | |
1e22b5cd | 2846 | s->exec_context.stdio_as_fds = true; |
a34ceba6 LP |
2847 | } |
2848 | } else if (streq(key, "stdout-fd")) { | |
2849 | int fd; | |
2850 | ||
2851 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2852 | log_unit_debug(u, "Failed to parse stdout-fd value: %s", value); | |
2853 | else { | |
2854 | asynchronous_close(s->stdout_fd); | |
2855 | s->stdout_fd = fdset_remove(fds, fd); | |
1e22b5cd | 2856 | s->exec_context.stdio_as_fds = true; |
a34ceba6 LP |
2857 | } |
2858 | } else if (streq(key, "stderr-fd")) { | |
2859 | int fd; | |
2860 | ||
2861 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2862 | log_unit_debug(u, "Failed to parse stderr-fd value: %s", value); | |
2863 | else { | |
2864 | asynchronous_close(s->stderr_fd); | |
2865 | s->stderr_fd = fdset_remove(fds, fd); | |
1e22b5cd | 2866 | s->exec_context.stdio_as_fds = true; |
a34ceba6 | 2867 | } |
5686391b LP |
2868 | } else if (streq(key, "exec-fd")) { |
2869 | int fd; | |
2870 | ||
2871 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2872 | log_unit_debug(u, "Failed to parse exec-fd value: %s", value); | |
2873 | else { | |
2874 | s->exec_fd_event_source = sd_event_source_unref(s->exec_fd_event_source); | |
2875 | ||
2876 | fd = fdset_remove(fds, fd); | |
2877 | if (service_allocate_exec_fd_event_source(s, fd, &s->exec_fd_event_source) < 0) | |
2878 | safe_close(fd); | |
2879 | } | |
2787d83c M |
2880 | } else if (streq(key, "watchdog-override-usec")) { |
2881 | usec_t watchdog_override_usec; | |
2882 | if (timestamp_deserialize(value, &watchdog_override_usec) < 0) | |
2883 | log_unit_debug(u, "Failed to parse watchdog_override_usec value: %s", value); | |
2884 | else { | |
2885 | s->watchdog_override_enable = true; | |
2886 | s->watchdog_override_usec = watchdog_override_usec; | |
2887 | } | |
e266c068 MS |
2888 | } else if (STR_IN_SET(key, "main-command", "control-command")) { |
2889 | r = service_deserialize_exec_command(u, key, value); | |
2890 | if (r < 0) | |
2891 | log_unit_debug_errno(u, r, "Failed to parse serialized command \"%s\": %m", value); | |
7a0019d3 LP |
2892 | |
2893 | } else if (streq(key, "n-restarts")) { | |
2894 | r = safe_atou(value, &s->n_restarts); | |
2895 | if (r < 0) | |
2896 | log_unit_debug_errno(u, r, "Failed to parse serialized restart counter '%s': %m", value); | |
2897 | ||
2898 | } else if (streq(key, "flush-n-restarts")) { | |
2899 | r = parse_boolean(value); | |
2900 | if (r < 0) | |
2901 | log_unit_debug_errno(u, r, "Failed to parse serialized flush restart counter setting '%s': %m", value); | |
2902 | else | |
2903 | s->flush_n_restarts = r; | |
c17ec25e | 2904 | } else |
f2341e0a | 2905 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
2906 | |
2907 | return 0; | |
2908 | } | |
2909 | ||
44a6b1b6 | 2910 | _pure_ static UnitActiveState service_active_state(Unit *u) { |
e056b01d LP |
2911 | const UnitActiveState *table; |
2912 | ||
87f0e418 | 2913 | assert(u); |
5cb5a6ff | 2914 | |
e056b01d LP |
2915 | table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
2916 | ||
2917 | return table[SERVICE(u)->state]; | |
034c6ed7 LP |
2918 | } |
2919 | ||
10a94420 LP |
2920 | static const char *service_sub_state_to_string(Unit *u) { |
2921 | assert(u); | |
2922 | ||
2923 | return service_state_to_string(SERVICE(u)->state); | |
2924 | } | |
2925 | ||
f2f725e5 | 2926 | static bool service_may_gc(Unit *u) { |
701cc384 LP |
2927 | Service *s = SERVICE(u); |
2928 | ||
2929 | assert(s); | |
2930 | ||
e98b2fbb | 2931 | /* Never clean up services that still have a process around, even if the service is formally dead. Note that |
f2f725e5 | 2932 | * unit_may_gc() already checked our cgroup for us, we just check our two additional PIDs, too, in case they |
e98b2fbb LP |
2933 | * have moved outside of the cgroup. */ |
2934 | ||
2935 | if (main_pid_good(s) > 0 || | |
6d55002a | 2936 | control_pid_good(s) > 0) |
f2f725e5 | 2937 | return false; |
6d55002a | 2938 | |
f2f725e5 | 2939 | return true; |
6d55002a LP |
2940 | } |
2941 | ||
3a111838 MS |
2942 | static int service_retry_pid_file(Service *s) { |
2943 | int r; | |
2944 | ||
2945 | assert(s->pid_file); | |
3742095b | 2946 | assert(IN_SET(s->state, SERVICE_START, SERVICE_START_POST)); |
3a111838 MS |
2947 | |
2948 | r = service_load_pid_file(s, false); | |
2949 | if (r < 0) | |
2950 | return r; | |
2951 | ||
2952 | service_unwatch_pid_file(s); | |
2953 | ||
f42806df | 2954 | service_enter_running(s, SERVICE_SUCCESS); |
3a111838 MS |
2955 | return 0; |
2956 | } | |
2957 | ||
2958 | static int service_watch_pid_file(Service *s) { | |
2959 | int r; | |
2960 | ||
f2341e0a | 2961 | log_unit_debug(UNIT(s), "Setting watch for PID file %s", s->pid_file_pathspec->path); |
8bb2d17d | 2962 | |
5686391b | 2963 | r = path_spec_watch(s->pid_file_pathspec, service_dispatch_inotify_io); |
3a111838 MS |
2964 | if (r < 0) |
2965 | goto fail; | |
2966 | ||
2967 | /* the pidfile might have appeared just before we set the watch */ | |
f2341e0a | 2968 | log_unit_debug(UNIT(s), "Trying to read PID file %s in case it changed", s->pid_file_pathspec->path); |
3a111838 MS |
2969 | service_retry_pid_file(s); |
2970 | ||
2971 | return 0; | |
2972 | fail: | |
f2341e0a | 2973 | log_unit_error_errno(UNIT(s), r, "Failed to set a watch for PID file %s: %m", s->pid_file_pathspec->path); |
3a111838 MS |
2974 | service_unwatch_pid_file(s); |
2975 | return r; | |
2976 | } | |
2977 | ||
2978 | static int service_demand_pid_file(Service *s) { | |
2979 | PathSpec *ps; | |
2980 | ||
2981 | assert(s->pid_file); | |
2982 | assert(!s->pid_file_pathspec); | |
2983 | ||
2984 | ps = new0(PathSpec, 1); | |
2985 | if (!ps) | |
2986 | return -ENOMEM; | |
2987 | ||
718db961 | 2988 | ps->unit = UNIT(s); |
3a111838 MS |
2989 | ps->path = strdup(s->pid_file); |
2990 | if (!ps->path) { | |
2991 | free(ps); | |
2992 | return -ENOMEM; | |
2993 | } | |
2994 | ||
858d36c1 | 2995 | path_simplify(ps->path, false); |
3a111838 MS |
2996 | |
2997 | /* PATH_CHANGED would not be enough. There are daemons (sendmail) that | |
2998 | * keep their PID file open all the time. */ | |
2999 | ps->type = PATH_MODIFIED; | |
3000 | ps->inotify_fd = -1; | |
3001 | ||
3002 | s->pid_file_pathspec = ps; | |
3003 | ||
3004 | return service_watch_pid_file(s); | |
3005 | } | |
3006 | ||
5686391b | 3007 | static int service_dispatch_inotify_io(sd_event_source *source, int fd, uint32_t events, void *userdata) { |
e14c2802 LP |
3008 | PathSpec *p = userdata; |
3009 | Service *s; | |
3010 | ||
3011 | assert(p); | |
3012 | ||
3013 | s = SERVICE(p->unit); | |
3a111838 MS |
3014 | |
3015 | assert(s); | |
3016 | assert(fd >= 0); | |
3742095b | 3017 | assert(IN_SET(s->state, SERVICE_START, SERVICE_START_POST)); |
3a111838 | 3018 | assert(s->pid_file_pathspec); |
57020a3a | 3019 | assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd)); |
3a111838 | 3020 | |
f2341e0a | 3021 | log_unit_debug(UNIT(s), "inotify event"); |
3a111838 | 3022 | |
e14c2802 | 3023 | if (path_spec_fd_event(p, events) < 0) |
3a111838 MS |
3024 | goto fail; |
3025 | ||
3026 | if (service_retry_pid_file(s) == 0) | |
718db961 | 3027 | return 0; |
3a111838 MS |
3028 | |
3029 | if (service_watch_pid_file(s) < 0) | |
3030 | goto fail; | |
3031 | ||
718db961 LP |
3032 | return 0; |
3033 | ||
3a111838 MS |
3034 | fail: |
3035 | service_unwatch_pid_file(s); | |
f42806df | 3036 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
718db961 | 3037 | return 0; |
3a111838 MS |
3038 | } |
3039 | ||
5686391b LP |
3040 | static int service_dispatch_exec_io(sd_event_source *source, int fd, uint32_t events, void *userdata) { |
3041 | Service *s = SERVICE(userdata); | |
3042 | ||
3043 | assert(s); | |
3044 | ||
3045 | log_unit_debug(UNIT(s), "got exec-fd event"); | |
3046 | ||
3047 | /* If Type=exec is set, we'll consider a service started successfully the instant we invoked execve() | |
3048 | * successfully for it. We implement this through a pipe() towards the child, which the kernel automatically | |
3049 | * closes for us due to O_CLOEXEC on execve() in the child, which then triggers EOF on the pipe in the | |
3050 | * parent. We need to be careful however, as there are other reasons that we might cause the child's side of | |
3051 | * the pipe to be closed (for example, a simple exit()). To deal with that we'll ignore EOFs on the pipe unless | |
3052 | * the child signalled us first that it is about to call the execve(). It does so by sending us a simple | |
3053 | * non-zero byte via the pipe. We also provide the child with a way to inform us in case execve() failed: if it | |
3054 | * sends a zero byte we'll ignore POLLHUP on the fd again. */ | |
3055 | ||
3056 | for (;;) { | |
3057 | uint8_t x; | |
3058 | ssize_t n; | |
3059 | ||
3060 | n = read(fd, &x, sizeof(x)); | |
3061 | if (n < 0) { | |
3062 | if (errno == EAGAIN) /* O_NONBLOCK in effect → everything queued has now been processed. */ | |
3063 | return 0; | |
3064 | ||
3065 | return log_unit_error_errno(UNIT(s), errno, "Failed to read from exec_fd: %m"); | |
3066 | } | |
3067 | if (n == 0) { /* EOF → the event we are waiting for */ | |
3068 | ||
3069 | s->exec_fd_event_source = sd_event_source_unref(s->exec_fd_event_source); | |
3070 | ||
3071 | if (s->exec_fd_hot) { /* Did the child tell us to expect EOF now? */ | |
3072 | log_unit_debug(UNIT(s), "Got EOF on exec-fd"); | |
3073 | ||
3074 | s->exec_fd_hot = false; | |
3075 | ||
3076 | /* Nice! This is what we have been waiting for. Transition to next state. */ | |
3077 | if (s->type == SERVICE_EXEC && s->state == SERVICE_START) | |
3078 | service_enter_start_post(s); | |
3079 | } else | |
3080 | log_unit_debug(UNIT(s), "Got EOF on exec-fd while it was disabled, ignoring."); | |
3081 | ||
3082 | return 0; | |
3083 | } | |
3084 | ||
3085 | /* A byte was read → this turns on/off the exec fd logic */ | |
3086 | assert(n == sizeof(x)); | |
3087 | s->exec_fd_hot = x; | |
3088 | } | |
3089 | ||
3090 | return 0; | |
3091 | } | |
3092 | ||
a911bb9a LP |
3093 | static void service_notify_cgroup_empty_event(Unit *u) { |
3094 | Service *s = SERVICE(u); | |
3095 | ||
3096 | assert(u); | |
3097 | ||
f2341e0a | 3098 | log_unit_debug(u, "cgroup is empty"); |
a911bb9a LP |
3099 | |
3100 | switch (s->state) { | |
3101 | ||
3102 | /* Waiting for SIGCHLD is usually more interesting, | |
3103 | * because it includes return codes/signals. Which is | |
3104 | * why we ignore the cgroup events for most cases, | |
3105 | * except when we don't know pid which to expect the | |
3106 | * SIGCHLD for. */ | |
3107 | ||
3108 | case SERVICE_START: | |
3c751b1b LP |
3109 | if (s->type == SERVICE_NOTIFY && |
3110 | main_pid_good(s) == 0 && | |
3111 | control_pid_good(s) == 0) { | |
3d474ef7 | 3112 | /* No chance of getting a ready notification anymore */ |
c3fda31d | 3113 | service_enter_stop_post(s, SERVICE_FAILURE_PROTOCOL); |
71e529fc JW |
3114 | break; |
3115 | } | |
3116 | ||
4831981d | 3117 | _fallthrough_; |
71e529fc | 3118 | case SERVICE_START_POST: |
3c751b1b LP |
3119 | if (s->pid_file_pathspec && |
3120 | main_pid_good(s) == 0 && | |
3121 | control_pid_good(s) == 0) { | |
3122 | ||
3d474ef7 | 3123 | /* Give up hoping for the daemon to write its PID file */ |
f2341e0a | 3124 | log_unit_warning(u, "Daemon never wrote its PID file. Failing."); |
8bb2d17d | 3125 | |
a911bb9a LP |
3126 | service_unwatch_pid_file(s); |
3127 | if (s->state == SERVICE_START) | |
c3fda31d | 3128 | service_enter_stop_post(s, SERVICE_FAILURE_PROTOCOL); |
a911bb9a | 3129 | else |
c35755fb | 3130 | service_enter_stop(s, SERVICE_FAILURE_PROTOCOL); |
a911bb9a LP |
3131 | } |
3132 | break; | |
3133 | ||
3134 | case SERVICE_RUNNING: | |
3135 | /* service_enter_running() will figure out what to do */ | |
3136 | service_enter_running(s, SERVICE_SUCCESS); | |
3137 | break; | |
3138 | ||
c87700a1 | 3139 | case SERVICE_STOP_WATCHDOG: |
a911bb9a LP |
3140 | case SERVICE_STOP_SIGTERM: |
3141 | case SERVICE_STOP_SIGKILL: | |
3142 | ||
b13ddbbc | 3143 | if (main_pid_good(s) <= 0 && control_pid_good(s) <= 0) |
a911bb9a LP |
3144 | service_enter_stop_post(s, SERVICE_SUCCESS); |
3145 | ||
3146 | break; | |
3147 | ||
3148 | case SERVICE_STOP_POST: | |
3149 | case SERVICE_FINAL_SIGTERM: | |
3150 | case SERVICE_FINAL_SIGKILL: | |
b13ddbbc | 3151 | if (main_pid_good(s) <= 0 && control_pid_good(s) <= 0) |
a911bb9a LP |
3152 | service_enter_dead(s, SERVICE_SUCCESS, true); |
3153 | ||
3154 | break; | |
3155 | ||
3156 | default: | |
3157 | ; | |
3158 | } | |
3159 | } | |
3160 | ||
87f0e418 | 3161 | static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
5cdabc8d | 3162 | bool notify_dbus = true; |
87f0e418 | 3163 | Service *s = SERVICE(u); |
f42806df | 3164 | ServiceResult f; |
5cb5a6ff LP |
3165 | |
3166 | assert(s); | |
034c6ed7 LP |
3167 | assert(pid >= 0); |
3168 | ||
1f0958f6 | 3169 | if (is_clean_exit(code, status, s->type == SERVICE_ONESHOT ? EXIT_CLEAN_COMMAND : EXIT_CLEAN_DAEMON, &s->success_status)) |
f42806df LP |
3170 | f = SERVICE_SUCCESS; |
3171 | else if (code == CLD_EXITED) | |
3172 | f = SERVICE_FAILURE_EXIT_CODE; | |
3173 | else if (code == CLD_KILLED) | |
3174 | f = SERVICE_FAILURE_SIGNAL; | |
3175 | else if (code == CLD_DUMPED) | |
3176 | f = SERVICE_FAILURE_CORE_DUMP; | |
d06dacd0 | 3177 | else |
cfc4eb4c | 3178 | assert_not_reached("Unknown code"); |
034c6ed7 LP |
3179 | |
3180 | if (s->main_pid == pid) { | |
db01f8b3 MS |
3181 | /* Forking services may occasionally move to a new PID. |
3182 | * As long as they update the PID file before exiting the old | |
3183 | * PID, they're fine. */ | |
db256aab | 3184 | if (service_load_pid_file(s, false) > 0) |
db01f8b3 | 3185 | return; |
034c6ed7 | 3186 | |
034c6ed7 | 3187 | s->main_pid = 0; |
6ea832a2 | 3188 | exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status); |
034c6ed7 | 3189 | |
867b3b7d | 3190 | if (s->main_command) { |
fbeefb45 LP |
3191 | /* If this is not a forking service than the |
3192 | * main process got started and hence we copy | |
3193 | * the exit status so that it is recorded both | |
3194 | * as main and as control process exit | |
3195 | * status */ | |
3196 | ||
867b3b7d | 3197 | s->main_command->exec_status = s->main_exec_status; |
b708e7ce | 3198 | |
3ed0cd26 | 3199 | if (s->main_command->flags & EXEC_COMMAND_IGNORE_FAILURE) |
f42806df | 3200 | f = SERVICE_SUCCESS; |
fbeefb45 LP |
3201 | } else if (s->exec_command[SERVICE_EXEC_START]) { |
3202 | ||
3203 | /* If this is a forked process, then we should | |
3204 | * ignore the return value if this was | |
3205 | * configured for the starter process */ | |
3206 | ||
3ed0cd26 | 3207 | if (s->exec_command[SERVICE_EXEC_START]->flags & EXEC_COMMAND_IGNORE_FAILURE) |
fbeefb45 | 3208 | f = SERVICE_SUCCESS; |
034c6ed7 LP |
3209 | } |
3210 | ||
5368222d LP |
3211 | /* When this is a successful exit, let's log about the exit code on DEBUG level. If this is a failure |
3212 | * and the process exited on its own via exit(), then let's make this a NOTICE, under the assumption | |
3213 | * that the service already logged the reason at a higher log level on its own. However, if the service | |
3214 | * died due to a signal, then it most likely didn't say anything about any reason, hence let's raise | |
3215 | * our log level to WARNING then. */ | |
3216 | ||
3217 | log_struct(f == SERVICE_SUCCESS ? LOG_DEBUG : | |
3218 | (code == CLD_EXITED ? LOG_NOTICE : LOG_WARNING), | |
f2341e0a LP |
3219 | LOG_UNIT_MESSAGE(u, "Main process exited, code=%s, status=%i/%s", |
3220 | sigchld_code_to_string(code), status, | |
e2cc6eca LP |
3221 | strna(code == CLD_EXITED |
3222 | ? exit_status_to_string(status, EXIT_STATUS_FULL) | |
3223 | : signal_to_string(status))), | |
f2341e0a LP |
3224 | "EXIT_CODE=%s", sigchld_code_to_string(code), |
3225 | "EXIT_STATUS=%i", status, | |
ba360bb0 | 3226 | LOG_UNIT_ID(u), |
a1230ff9 | 3227 | LOG_UNIT_INVOCATION_ID(u)); |
f42806df | 3228 | |
a0fef983 | 3229 | if (s->result == SERVICE_SUCCESS) |
f42806df | 3230 | s->result = f; |
034c6ed7 | 3231 | |
867b3b7d LP |
3232 | if (s->main_command && |
3233 | s->main_command->command_next && | |
b58aeb70 | 3234 | s->type == SERVICE_ONESHOT && |
f42806df | 3235 | f == SERVICE_SUCCESS) { |
034c6ed7 | 3236 | |
34e9ba66 LP |
3237 | /* There is another command to * |
3238 | * execute, so let's do that. */ | |
034c6ed7 | 3239 | |
f2341e0a | 3240 | log_unit_debug(u, "Running next main command for state %s.", service_state_to_string(s->state)); |
f42806df | 3241 | service_run_next_main(s); |
034c6ed7 | 3242 | |
34e9ba66 LP |
3243 | } else { |
3244 | ||
3245 | /* The service exited, so the service is officially | |
3246 | * gone. */ | |
867b3b7d | 3247 | s->main_command = NULL; |
34e9ba66 LP |
3248 | |
3249 | switch (s->state) { | |
3250 | ||
3251 | case SERVICE_START_POST: | |
3252 | case SERVICE_RELOAD: | |
3253 | case SERVICE_STOP: | |
3254 | /* Need to wait until the operation is | |
3255 | * done */ | |
c4653a4d | 3256 | break; |
7d55e835 | 3257 | |
34e9ba66 LP |
3258 | case SERVICE_START: |
3259 | if (s->type == SERVICE_ONESHOT) { | |
3260 | /* This was our main goal, so let's go on */ | |
f42806df | 3261 | if (f == SERVICE_SUCCESS) |
34e9ba66 LP |
3262 | service_enter_start_post(s); |
3263 | else | |
c3fda31d | 3264 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
34e9ba66 | 3265 | break; |
3d474ef7 JW |
3266 | } else if (s->type == SERVICE_NOTIFY) { |
3267 | /* Only enter running through a notification, so that the | |
3268 | * SERVICE_START state signifies that no ready notification | |
3269 | * has been received */ | |
3270 | if (f != SERVICE_SUCCESS) | |
c3fda31d | 3271 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
df66b93f JW |
3272 | else if (!s->remain_after_exit || s->notify_access == NOTIFY_MAIN) |
3273 | /* The service has never been and will never be active */ | |
c3fda31d | 3274 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_PROTOCOL); |
3d474ef7 | 3275 | break; |
34e9ba66 | 3276 | } |
034c6ed7 | 3277 | |
4831981d | 3278 | _fallthrough_; |
34e9ba66 | 3279 | case SERVICE_RUNNING: |
f42806df | 3280 | service_enter_running(s, f); |
34e9ba66 | 3281 | break; |
034c6ed7 | 3282 | |
c87700a1 | 3283 | case SERVICE_STOP_WATCHDOG: |
34e9ba66 LP |
3284 | case SERVICE_STOP_SIGTERM: |
3285 | case SERVICE_STOP_SIGKILL: | |
5cb5a6ff | 3286 | |
b13ddbbc | 3287 | if (control_pid_good(s) <= 0) |
f42806df | 3288 | service_enter_stop_post(s, f); |
5cb5a6ff | 3289 | |
34e9ba66 LP |
3290 | /* If there is still a control process, wait for that first */ |
3291 | break; | |
3292 | ||
bf108e55 LP |
3293 | case SERVICE_STOP_POST: |
3294 | case SERVICE_FINAL_SIGTERM: | |
3295 | case SERVICE_FINAL_SIGKILL: | |
3296 | ||
b13ddbbc | 3297 | if (control_pid_good(s) <= 0) |
bf108e55 LP |
3298 | service_enter_dead(s, f, true); |
3299 | break; | |
3300 | ||
34e9ba66 LP |
3301 | default: |
3302 | assert_not_reached("Uh, main process died at wrong time."); | |
3303 | } | |
034c6ed7 | 3304 | } |
5cb5a6ff | 3305 | |
034c6ed7 | 3306 | } else if (s->control_pid == pid) { |
34e9ba66 LP |
3307 | s->control_pid = 0; |
3308 | ||
b708e7ce | 3309 | if (s->control_command) { |
8bb2d17d | 3310 | exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status); |
a16e1123 | 3311 | |
3ed0cd26 | 3312 | if (s->control_command->flags & EXEC_COMMAND_IGNORE_FAILURE) |
f42806df | 3313 | f = SERVICE_SUCCESS; |
b708e7ce LP |
3314 | } |
3315 | ||
f2341e0a LP |
3316 | log_unit_full(u, f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, 0, |
3317 | "Control process exited, code=%s status=%i", | |
3318 | sigchld_code_to_string(code), status); | |
f42806df | 3319 | |
a0fef983 | 3320 | if (s->result == SERVICE_SUCCESS) |
f42806df | 3321 | s->result = f; |
034c6ed7 | 3322 | |
34e9ba66 LP |
3323 | if (s->control_command && |
3324 | s->control_command->command_next && | |
f42806df | 3325 | f == SERVICE_SUCCESS) { |
034c6ed7 LP |
3326 | |
3327 | /* There is another command to * | |
3328 | * execute, so let's do that. */ | |
3329 | ||
f2341e0a | 3330 | log_unit_debug(u, "Running next control command for state %s.", service_state_to_string(s->state)); |
f42806df | 3331 | service_run_next_control(s); |
034c6ed7 | 3332 | |
80876c20 | 3333 | } else { |
034c6ed7 LP |
3334 | /* No further commands for this step, so let's |
3335 | * figure out what to do next */ | |
3336 | ||
a16e1123 LP |
3337 | s->control_command = NULL; |
3338 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
3339 | ||
f2341e0a | 3340 | log_unit_debug(u, "Got final SIGCHLD for state %s.", service_state_to_string(s->state)); |
bd982a8b | 3341 | |
034c6ed7 LP |
3342 | switch (s->state) { |
3343 | ||
3344 | case SERVICE_START_PRE: | |
f42806df | 3345 | if (f == SERVICE_SUCCESS) |
034c6ed7 LP |
3346 | service_enter_start(s); |
3347 | else | |
c3fda31d | 3348 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
034c6ed7 LP |
3349 | break; |
3350 | ||
3351 | case SERVICE_START: | |
bfba3256 LP |
3352 | if (s->type != SERVICE_FORKING) |
3353 | /* Maybe spurious event due to a reload that changed the type? */ | |
3354 | break; | |
034c6ed7 | 3355 | |
f42806df | 3356 | if (f != SERVICE_SUCCESS) { |
c3fda31d | 3357 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
3a111838 MS |
3358 | break; |
3359 | } | |
034c6ed7 | 3360 | |
3a111838 | 3361 | if (s->pid_file) { |
f42806df LP |
3362 | bool has_start_post; |
3363 | int r; | |
3364 | ||
3a111838 MS |
3365 | /* Let's try to load the pid file here if we can. |
3366 | * The PID file might actually be created by a START_POST | |
3367 | * script. In that case don't worry if the loading fails. */ | |
f42806df | 3368 | |
5d904a6a | 3369 | has_start_post = s->exec_command[SERVICE_EXEC_START_POST]; |
f42806df | 3370 | r = service_load_pid_file(s, !has_start_post); |
3a111838 MS |
3371 | if (!has_start_post && r < 0) { |
3372 | r = service_demand_pid_file(s); | |
b13ddbbc | 3373 | if (r < 0 || cgroup_good(s) == 0) |
c3fda31d | 3374 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_PROTOCOL); |
3a111838 MS |
3375 | break; |
3376 | } | |
034c6ed7 | 3377 | } else |
783e05d6 | 3378 | service_search_main_pid(s); |
034c6ed7 | 3379 | |
3a111838 | 3380 | service_enter_start_post(s); |
034c6ed7 LP |
3381 | break; |
3382 | ||
3383 | case SERVICE_START_POST: | |
f42806df | 3384 | if (f != SERVICE_SUCCESS) { |
ce359e98 | 3385 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
2096e009 | 3386 | break; |
034c6ed7 LP |
3387 | } |
3388 | ||
2096e009 | 3389 | if (s->pid_file) { |
f42806df LP |
3390 | int r; |
3391 | ||
3392 | r = service_load_pid_file(s, true); | |
2096e009 MS |
3393 | if (r < 0) { |
3394 | r = service_demand_pid_file(s); | |
b13ddbbc | 3395 | if (r < 0 || cgroup_good(s) == 0) |
c35755fb | 3396 | service_enter_stop(s, SERVICE_FAILURE_PROTOCOL); |
2096e009 MS |
3397 | break; |
3398 | } | |
3399 | } else | |
783e05d6 | 3400 | service_search_main_pid(s); |
2096e009 | 3401 | |
f42806df | 3402 | service_enter_running(s, SERVICE_SUCCESS); |
3185a36b | 3403 | break; |
034c6ed7 LP |
3404 | |
3405 | case SERVICE_RELOAD: | |
7236ce6e ZJS |
3406 | if (f == SERVICE_SUCCESS) |
3407 | if (service_load_pid_file(s, true) < 0) | |
3408 | service_search_main_pid(s); | |
3185a36b | 3409 | |
f42806df LP |
3410 | s->reload_result = f; |
3411 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
3412 | break; |
3413 | ||
3414 | case SERVICE_STOP: | |
f42806df | 3415 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
034c6ed7 LP |
3416 | break; |
3417 | ||
c87700a1 | 3418 | case SERVICE_STOP_WATCHDOG: |
034c6ed7 LP |
3419 | case SERVICE_STOP_SIGTERM: |
3420 | case SERVICE_STOP_SIGKILL: | |
3421 | if (main_pid_good(s) <= 0) | |
f42806df | 3422 | service_enter_stop_post(s, f); |
034c6ed7 LP |
3423 | |
3424 | /* If there is still a service | |
3425 | * process around, wait until | |
3426 | * that one quit, too */ | |
3427 | break; | |
3428 | ||
3429 | case SERVICE_STOP_POST: | |
3430 | case SERVICE_FINAL_SIGTERM: | |
3431 | case SERVICE_FINAL_SIGKILL: | |
bf108e55 LP |
3432 | if (main_pid_good(s) <= 0) |
3433 | service_enter_dead(s, f, true); | |
034c6ed7 LP |
3434 | break; |
3435 | ||
3436 | default: | |
3437 | assert_not_reached("Uh, control process died at wrong time."); | |
3438 | } | |
3439 | } | |
5cdabc8d LP |
3440 | } else /* Neither control nor main PID? If so, don't notify about anything */ |
3441 | notify_dbus = false; | |
c4e2ceae LP |
3442 | |
3443 | /* Notify clients about changed exit status */ | |
5cdabc8d LP |
3444 | if (notify_dbus) |
3445 | unit_add_to_dbus_queue(u); | |
a911bb9a | 3446 | |
11aef522 LP |
3447 | /* If we get a SIGCHLD event for one of the processes we were interested in, then we look for others to watch, |
3448 | * under the assumption that we'll sooner or later get a SIGCHLD for them, as the original process we watched | |
3449 | * was probably the parent of them, and they are hence now our children. */ | |
50be4f4a | 3450 | (void) unit_enqueue_rewatch_pids(u); |
034c6ed7 LP |
3451 | } |
3452 | ||
718db961 LP |
3453 | static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
3454 | Service *s = SERVICE(userdata); | |
034c6ed7 LP |
3455 | |
3456 | assert(s); | |
718db961 | 3457 | assert(source == s->timer_event_source); |
034c6ed7 LP |
3458 | |
3459 | switch (s->state) { | |
3460 | ||
3461 | case SERVICE_START_PRE: | |
3462 | case SERVICE_START: | |
f2341e0a | 3463 | log_unit_warning(UNIT(s), "%s operation timed out. Terminating.", s->state == SERVICE_START ? "Start" : "Start-pre"); |
c3fda31d | 3464 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
80876c20 LP |
3465 | break; |
3466 | ||
034c6ed7 | 3467 | case SERVICE_START_POST: |
f2341e0a | 3468 | log_unit_warning(UNIT(s), "Start-post operation timed out. Stopping."); |
ce359e98 | 3469 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3470 | break; |
3471 | ||
36c16a7c LP |
3472 | case SERVICE_RUNNING: |
3473 | log_unit_warning(UNIT(s), "Service reached runtime time limit. Stopping."); | |
3474 | service_enter_stop(s, SERVICE_FAILURE_TIMEOUT); | |
3475 | break; | |
3476 | ||
e2f3b44c | 3477 | case SERVICE_RELOAD: |
089b64d5 | 3478 | log_unit_warning(UNIT(s), "Reload operation timed out. Killing reload process."); |
e9a4f676 | 3479 | service_kill_control_process(s); |
f42806df LP |
3480 | s->reload_result = SERVICE_FAILURE_TIMEOUT; |
3481 | service_enter_running(s, SERVICE_SUCCESS); | |
e2f3b44c LP |
3482 | break; |
3483 | ||
034c6ed7 | 3484 | case SERVICE_STOP: |
f2341e0a | 3485 | log_unit_warning(UNIT(s), "Stopping timed out. Terminating."); |
f42806df | 3486 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3487 | break; |
3488 | ||
c87700a1 AZ |
3489 | case SERVICE_STOP_WATCHDOG: |
3490 | log_unit_warning(UNIT(s), "State 'stop-watchdog' timed out. Terminating."); | |
2ab2ab7b | 3491 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
db2cb23b UTL |
3492 | break; |
3493 | ||
034c6ed7 | 3494 | case SERVICE_STOP_SIGTERM: |
4819ff03 | 3495 | if (s->kill_context.send_sigkill) { |
f2341e0a | 3496 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Killing."); |
f42806df | 3497 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 3498 | } else { |
f2341e0a | 3499 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Skipping SIGKILL."); |
f42806df | 3500 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
ba035df2 LP |
3501 | } |
3502 | ||
034c6ed7 LP |
3503 | break; |
3504 | ||
3505 | case SERVICE_STOP_SIGKILL: | |
35b8ca3a | 3506 | /* Uh, we sent a SIGKILL and it is still not gone? |
034c6ed7 LP |
3507 | * Must be something we cannot kill, so let's just be |
3508 | * weirded out and continue */ | |
3509 | ||
f2341e0a | 3510 | log_unit_warning(UNIT(s), "Processes still around after SIGKILL. Ignoring."); |
f42806df | 3511 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3512 | break; |
3513 | ||
3514 | case SERVICE_STOP_POST: | |
f2341e0a | 3515 | log_unit_warning(UNIT(s), "State 'stop-post' timed out. Terminating."); |
f42806df | 3516 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3517 | break; |
3518 | ||
3519 | case SERVICE_FINAL_SIGTERM: | |
4819ff03 | 3520 | if (s->kill_context.send_sigkill) { |
f2341e0a | 3521 | log_unit_warning(UNIT(s), "State 'stop-final-sigterm' timed out. Killing."); |
f42806df | 3522 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 3523 | } else { |
f2341e0a | 3524 | log_unit_warning(UNIT(s), "State 'stop-final-sigterm' timed out. Skipping SIGKILL. Entering failed mode."); |
f42806df | 3525 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false); |
ba035df2 LP |
3526 | } |
3527 | ||
034c6ed7 LP |
3528 | break; |
3529 | ||
3530 | case SERVICE_FINAL_SIGKILL: | |
f2341e0a | 3531 | log_unit_warning(UNIT(s), "Processes still around after final SIGKILL. Entering failed mode."); |
f42806df | 3532 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true); |
034c6ed7 LP |
3533 | break; |
3534 | ||
3535 | case SERVICE_AUTO_RESTART: | |
5ce6e7f5 ZJS |
3536 | if (s->restart_usec > 0) { |
3537 | char buf_restart[FORMAT_TIMESPAN_MAX]; | |
3538 | log_unit_info(UNIT(s), | |
3539 | "Service RestartSec=%s expired, scheduling restart.", | |
3540 | format_timespan(buf_restart, sizeof buf_restart, s->restart_usec, USEC_PER_SEC)); | |
3541 | } else | |
3542 | log_unit_info(UNIT(s), | |
3543 | "Service has no hold-off time (RestartSec=0), scheduling restart."); | |
3544 | ||
034c6ed7 LP |
3545 | service_enter_restart(s); |
3546 | break; | |
3547 | ||
3548 | default: | |
3549 | assert_not_reached("Timeout at wrong time."); | |
3550 | } | |
718db961 LP |
3551 | |
3552 | return 0; | |
3553 | } | |
3554 | ||
3555 | static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata) { | |
3556 | Service *s = SERVICE(userdata); | |
a7850c7d | 3557 | char t[FORMAT_TIMESPAN_MAX]; |
2787d83c | 3558 | usec_t watchdog_usec; |
718db961 LP |
3559 | |
3560 | assert(s); | |
3561 | assert(source == s->watchdog_event_source); | |
3562 | ||
2787d83c M |
3563 | watchdog_usec = service_get_watchdog_usec(s); |
3564 | ||
2a12e32e JK |
3565 | if (UNIT(s)->manager->service_watchdogs) { |
3566 | log_unit_error(UNIT(s), "Watchdog timeout (limit %s)!", | |
3567 | format_timespan(t, sizeof(t), watchdog_usec, 1)); | |
8bb2d17d | 3568 | |
c87700a1 | 3569 | service_enter_signal(s, SERVICE_STOP_WATCHDOG, SERVICE_FAILURE_WATCHDOG); |
2a12e32e JK |
3570 | } else |
3571 | log_unit_warning(UNIT(s), "Watchdog disabled! Ignoring watchdog timeout (limit %s)!", | |
3572 | format_timespan(t, sizeof(t), watchdog_usec, 1)); | |
842129f5 | 3573 | |
718db961 | 3574 | return 0; |
5cb5a6ff LP |
3575 | } |
3576 | ||
e3285237 LP |
3577 | static bool service_notify_message_authorized(Service *s, pid_t pid, char **tags, FDSet *fds) { |
3578 | assert(s); | |
8c47c732 | 3579 | |
c952c6ec | 3580 | if (s->notify_access == NOTIFY_NONE) { |
e3285237 LP |
3581 | log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception is disabled.", pid); |
3582 | return false; | |
3583 | } | |
3584 | ||
3585 | if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) { | |
336c6e46 | 3586 | if (s->main_pid != 0) |
e3285237 | 3587 | 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 | 3588 | else |
e3285237 LP |
3589 | 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); |
3590 | ||
3591 | return false; | |
3592 | } | |
3593 | ||
3594 | if (s->notify_access == NOTIFY_EXEC && pid != s->main_pid && pid != s->control_pid) { | |
6375bd20 | 3595 | if (s->main_pid != 0 && s->control_pid != 0) |
e3285237 | 3596 | 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 |
3597 | pid, s->main_pid, s->control_pid); |
3598 | else if (s->main_pid != 0) | |
e3285237 | 3599 | 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 | 3600 | else if (s->control_pid != 0) |
e3285237 | 3601 | 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 | 3602 | else |
e3285237 LP |
3603 | 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); |
3604 | ||
3605 | return false; | |
9711848f LP |
3606 | } |
3607 | ||
e3285237 LP |
3608 | return true; |
3609 | } | |
3610 | ||
db256aab LP |
3611 | static void service_notify_message( |
3612 | Unit *u, | |
3613 | const struct ucred *ucred, | |
3614 | char **tags, | |
3615 | FDSet *fds) { | |
3616 | ||
e3285237 LP |
3617 | Service *s = SERVICE(u); |
3618 | bool notify_dbus = false; | |
3619 | const char *e; | |
cc2b7b11 | 3620 | char **i; |
db256aab | 3621 | int r; |
e3285237 LP |
3622 | |
3623 | assert(u); | |
db256aab | 3624 | assert(ucred); |
e3285237 | 3625 | |
db256aab | 3626 | if (!service_notify_message_authorized(SERVICE(u), ucred->pid, tags, fds)) |
e3285237 LP |
3627 | return; |
3628 | ||
f1d34068 | 3629 | if (DEBUG_LOGGING) { |
9711848f LP |
3630 | _cleanup_free_ char *cc = NULL; |
3631 | ||
3632 | cc = strv_join(tags, ", "); | |
db256aab | 3633 | log_unit_debug(u, "Got notification message from PID "PID_FMT" (%s)", ucred->pid, isempty(cc) ? "n/a" : cc); |
9711848f | 3634 | } |
c952c6ec | 3635 | |
8c47c732 | 3636 | /* Interpret MAINPID= */ |
28849dba | 3637 | e = strv_find_startswith(tags, "MAINPID="); |
5e56b378 | 3638 | if (e && IN_SET(s->state, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) { |
db256aab LP |
3639 | pid_t new_main_pid; |
3640 | ||
3641 | if (parse_pid(e, &new_main_pid) < 0) | |
3642 | log_unit_warning(u, "Failed to parse MAINPID= field in notification message, ignoring: %s", e); | |
3643 | else if (!s->main_pid_known || new_main_pid != s->main_pid) { | |
3644 | ||
3645 | r = service_is_suitable_main_pid(s, new_main_pid, LOG_WARNING); | |
3646 | if (r == 0) { | |
3647 | /* The new main PID is a bit suspicous, which is OK if the sender is privileged. */ | |
3648 | ||
3649 | if (ucred->uid == 0) { | |
3650 | log_unit_debug(u, "New main PID "PID_FMT" does not belong to service, but we'll accept it as the request to change it came from a privileged process.", new_main_pid); | |
3651 | r = 1; | |
3652 | } else | |
3653 | log_unit_debug(u, "New main PID "PID_FMT" does not belong to service, refusing.", new_main_pid); | |
3654 | } | |
3655 | if (r > 0) { | |
3656 | service_set_main_pid(s, new_main_pid); | |
3657 | unit_watch_pid(UNIT(s), new_main_pid); | |
3658 | notify_dbus = true; | |
3659 | } | |
8c47c732 LP |
3660 | } |
3661 | } | |
3662 | ||
cc2b7b11 LP |
3663 | /* Interpret READY=/STOPPING=/RELOADING=. Last one wins. */ |
3664 | STRV_FOREACH_BACKWARDS(i, tags) { | |
308d72dc | 3665 | |
cc2b7b11 LP |
3666 | if (streq(*i, "READY=1")) { |
3667 | s->notify_state = NOTIFY_READY; | |
308d72dc | 3668 | |
cc2b7b11 LP |
3669 | /* Type=notify services inform us about completed |
3670 | * initialization with READY=1 */ | |
3671 | if (s->type == SERVICE_NOTIFY && s->state == SERVICE_START) | |
3672 | service_enter_start_post(s); | |
308d72dc | 3673 | |
cc2b7b11 LP |
3674 | /* Sending READY=1 while we are reloading informs us |
3675 | * that the reloading is complete */ | |
3676 | if (s->state == SERVICE_RELOAD && s->control_pid == 0) | |
3677 | service_enter_running(s, SERVICE_SUCCESS); | |
308d72dc | 3678 | |
cc2b7b11 LP |
3679 | notify_dbus = true; |
3680 | break; | |
308d72dc | 3681 | |
cc2b7b11 LP |
3682 | } else if (streq(*i, "RELOADING=1")) { |
3683 | s->notify_state = NOTIFY_RELOADING; | |
308d72dc | 3684 | |
cc2b7b11 LP |
3685 | if (s->state == SERVICE_RUNNING) |
3686 | service_enter_reload_by_notify(s); | |
308d72dc | 3687 | |
cc2b7b11 LP |
3688 | notify_dbus = true; |
3689 | break; | |
308d72dc | 3690 | |
cc2b7b11 LP |
3691 | } else if (streq(*i, "STOPPING=1")) { |
3692 | s->notify_state = NOTIFY_STOPPING; | |
308d72dc | 3693 | |
cc2b7b11 LP |
3694 | if (s->state == SERVICE_RUNNING) |
3695 | service_enter_stop_by_notify(s); | |
308d72dc | 3696 | |
cc2b7b11 LP |
3697 | notify_dbus = true; |
3698 | break; | |
3699 | } | |
8c47c732 LP |
3700 | } |
3701 | ||
3702 | /* Interpret STATUS= */ | |
28849dba | 3703 | e = strv_find_startswith(tags, "STATUS="); |
7f110ff9 | 3704 | if (e) { |
28849dba | 3705 | _cleanup_free_ char *t = NULL; |
8c47c732 | 3706 | |
28849dba LP |
3707 | if (!isempty(e)) { |
3708 | if (!utf8_is_valid(e)) | |
f2341e0a | 3709 | log_unit_warning(u, "Status message in notification message is not UTF-8 clean."); |
28849dba | 3710 | else { |
28849dba LP |
3711 | t = strdup(e); |
3712 | if (!t) | |
3713 | log_oom(); | |
3a2776bc | 3714 | } |
28849dba | 3715 | } |
8c47c732 | 3716 | |
30b5275a | 3717 | if (!streq_ptr(s->status_text, t)) { |
3b319885 | 3718 | free_and_replace(s->status_text, t); |
30b5275a | 3719 | notify_dbus = true; |
28849dba | 3720 | } |
8c47c732 | 3721 | } |
842129f5 | 3722 | |
4774e357 | 3723 | /* Interpret ERRNO= */ |
28849dba | 3724 | e = strv_find_startswith(tags, "ERRNO="); |
4774e357 MAA |
3725 | if (e) { |
3726 | int status_errno; | |
3727 | ||
2fa40742 LP |
3728 | status_errno = parse_errno(e); |
3729 | if (status_errno < 0) | |
3730 | log_unit_warning_errno(u, status_errno, | |
3731 | "Failed to parse ERRNO= field in notification message: %s", e); | |
3732 | else if (s->status_errno != status_errno) { | |
3733 | s->status_errno = status_errno; | |
3734 | notify_dbus = true; | |
4774e357 MAA |
3735 | } |
3736 | } | |
3737 | ||
a327431b DB |
3738 | /* Interpret EXTEND_TIMEOUT= */ |
3739 | e = strv_find_startswith(tags, "EXTEND_TIMEOUT_USEC="); | |
3740 | if (e) { | |
3741 | usec_t extend_timeout_usec; | |
3742 | if (safe_atou64(e, &extend_timeout_usec) < 0) | |
3743 | log_unit_warning(u, "Failed to parse EXTEND_TIMEOUT_USEC=%s", e); | |
3744 | else | |
3745 | service_extend_timeout(s, extend_timeout_usec); | |
3746 | } | |
3747 | ||
6f285378 | 3748 | /* Interpret WATCHDOG= */ |
1f6b4113 | 3749 | if (strv_find(tags, "WATCHDOG=1")) |
842129f5 | 3750 | service_reset_watchdog(s); |
c4e2ceae | 3751 | |
c45d11cb LP |
3752 | e = strv_find_startswith(tags, "WATCHDOG_USEC="); |
3753 | if (e) { | |
3754 | usec_t watchdog_override_usec; | |
3755 | if (safe_atou64(e, &watchdog_override_usec) < 0) | |
3756 | log_unit_warning(u, "Failed to parse WATCHDOG_USEC=%s", e); | |
3757 | else | |
3758 | service_reset_watchdog_timeout(s, watchdog_override_usec); | |
3759 | } | |
3760 | ||
e78ee06d LP |
3761 | /* Process FD store messages. Either FDSTOREREMOVE=1 for removal, or FDSTORE=1 for addition. In both cases, |
3762 | * process FDNAME= for picking the file descriptor name to use. Note that FDNAME= is required when removing | |
3763 | * fds, but optional when pushing in new fds, for compatibility reasons. */ | |
3764 | if (strv_find(tags, "FDSTOREREMOVE=1")) { | |
3765 | const char *name; | |
3766 | ||
3767 | name = strv_find_startswith(tags, "FDNAME="); | |
3768 | if (!name || !fdname_is_valid(name)) | |
3769 | log_unit_warning(u, "FDSTOREREMOVE=1 requested, but no valid file descriptor name passed, ignoring."); | |
3770 | else | |
3771 | service_remove_fd_store(s, name); | |
3772 | ||
3773 | } else if (strv_find(tags, "FDSTORE=1")) { | |
8dd4c05b LP |
3774 | const char *name; |
3775 | ||
3776 | name = strv_find_startswith(tags, "FDNAME="); | |
3777 | if (name && !fdname_is_valid(name)) { | |
3778 | log_unit_warning(u, "Passed FDNAME= name is invalid, ignoring."); | |
3779 | name = NULL; | |
3780 | } | |
3781 | ||
e78ee06d | 3782 | (void) service_add_fd_store_set(s, fds, name); |
8dd4c05b | 3783 | } |
a354329f | 3784 | |
c4e2ceae | 3785 | /* Notify clients about changed status or main pid */ |
30b5275a LP |
3786 | if (notify_dbus) |
3787 | unit_add_to_dbus_queue(u); | |
8c47c732 LP |
3788 | } |
3789 | ||
7a7821c8 | 3790 | static int service_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 3791 | Service *s = SERVICE(u); |
7a7821c8 | 3792 | uint64_t t; |
68db7a3b ZJS |
3793 | int r; |
3794 | ||
3795 | if (!s->timer_event_source) | |
3796 | return 0; | |
3797 | ||
7a7821c8 | 3798 | r = sd_event_source_get_time(s->timer_event_source, &t); |
68db7a3b ZJS |
3799 | if (r < 0) |
3800 | return r; | |
7a7821c8 LP |
3801 | if (t == USEC_INFINITY) |
3802 | return 0; | |
68db7a3b | 3803 | |
7a7821c8 | 3804 | *timeout = t; |
68db7a3b ZJS |
3805 | return 1; |
3806 | } | |
3807 | ||
05e343b7 LP |
3808 | static void service_bus_name_owner_change( |
3809 | Unit *u, | |
3810 | const char *name, | |
3811 | const char *old_owner, | |
3812 | const char *new_owner) { | |
3813 | ||
3814 | Service *s = SERVICE(u); | |
718db961 | 3815 | int r; |
05e343b7 LP |
3816 | |
3817 | assert(s); | |
3818 | assert(name); | |
3819 | ||
3820 | assert(streq(s->bus_name, name)); | |
3821 | assert(old_owner || new_owner); | |
3822 | ||
3823 | if (old_owner && new_owner) | |
f2341e0a | 3824 | log_unit_debug(u, "D-Bus name %s changed owner from %s to %s", name, old_owner, new_owner); |
05e343b7 | 3825 | else if (old_owner) |
f2341e0a | 3826 | log_unit_debug(u, "D-Bus name %s no longer registered by %s", name, old_owner); |
05e343b7 | 3827 | else |
f2341e0a | 3828 | log_unit_debug(u, "D-Bus name %s now registered by %s", name, new_owner); |
05e343b7 LP |
3829 | |
3830 | s->bus_name_good = !!new_owner; | |
3831 | ||
d8ccf5fd DM |
3832 | /* Track the current owner, so we can reconstruct changes after a daemon reload */ |
3833 | r = free_and_strdup(&s->bus_name_owner, new_owner); | |
3834 | if (r < 0) { | |
3835 | log_unit_error_errno(u, r, "Unable to set new bus name owner %s: %m", new_owner); | |
3836 | return; | |
3837 | } | |
3838 | ||
05e343b7 LP |
3839 | if (s->type == SERVICE_DBUS) { |
3840 | ||
3841 | /* service_enter_running() will figure out what to | |
3842 | * do */ | |
3843 | if (s->state == SERVICE_RUNNING) | |
f42806df | 3844 | service_enter_running(s, SERVICE_SUCCESS); |
05e343b7 LP |
3845 | else if (s->state == SERVICE_START && new_owner) |
3846 | service_enter_start_post(s); | |
3847 | ||
3848 | } else if (new_owner && | |
3849 | s->main_pid <= 0 && | |
a6951a50 LP |
3850 | IN_SET(s->state, |
3851 | SERVICE_START, | |
3852 | SERVICE_START_POST, | |
3853 | SERVICE_RUNNING, | |
3854 | SERVICE_RELOAD)) { | |
05e343b7 | 3855 | |
4afd3348 | 3856 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; |
718db961 | 3857 | pid_t pid; |
05e343b7 | 3858 | |
718db961 | 3859 | /* Try to acquire PID from bus service */ |
05e343b7 | 3860 | |
056f95d0 | 3861 | r = sd_bus_get_name_creds(u->manager->api_bus, name, SD_BUS_CREDS_PID, &creds); |
5b12334d LP |
3862 | if (r >= 0) |
3863 | r = sd_bus_creds_get_pid(creds, &pid); | |
718db961 | 3864 | if (r >= 0) { |
7c102d60 | 3865 | log_unit_debug(u, "D-Bus name %s is now owned by process " PID_FMT, name, pid); |
05e343b7 | 3866 | |
718db961 LP |
3867 | service_set_main_pid(s, pid); |
3868 | unit_watch_pid(UNIT(s), pid); | |
3869 | } | |
7400b9d2 | 3870 | } |
05e343b7 LP |
3871 | } |
3872 | ||
16115b0a | 3873 | int service_set_socket_fd(Service *s, int fd, Socket *sock, bool selinux_context_net) { |
79a98c60 LP |
3874 | _cleanup_free_ char *peer = NULL; |
3875 | int r; | |
57020a3a | 3876 | |
4f2d528d LP |
3877 | assert(s); |
3878 | assert(fd >= 0); | |
3879 | ||
7f2fbbff LP |
3880 | /* This is called by the socket code when instantiating a new service for a stream socket and the socket needs |
3881 | * to be configured. We take ownership of the passed fd on success. */ | |
4f2d528d | 3882 | |
1124fe6f | 3883 | if (UNIT(s)->load_state != UNIT_LOADED) |
4f2d528d LP |
3884 | return -EINVAL; |
3885 | ||
3886 | if (s->socket_fd >= 0) | |
3887 | return -EBUSY; | |
3888 | ||
3889 | if (s->state != SERVICE_DEAD) | |
3890 | return -EAGAIN; | |
3891 | ||
366b7db4 | 3892 | if (getpeername_pretty(fd, true, &peer) >= 0) { |
79a98c60 LP |
3893 | |
3894 | if (UNIT(s)->description) { | |
3895 | _cleanup_free_ char *a; | |
3896 | ||
605405c6 | 3897 | a = strjoin(UNIT(s)->description, " (", peer, ")"); |
79a98c60 LP |
3898 | if (!a) |
3899 | return -ENOMEM; | |
3900 | ||
3901 | r = unit_set_description(UNIT(s), a); | |
3902 | } else | |
3903 | r = unit_set_description(UNIT(s), peer); | |
3904 | ||
3905 | if (r < 0) | |
3906 | return r; | |
3907 | } | |
3908 | ||
eef85c4a | 3909 | r = unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false, UNIT_DEPENDENCY_IMPLICIT); |
7f2fbbff LP |
3910 | if (r < 0) |
3911 | return r; | |
3912 | ||
4f2d528d | 3913 | s->socket_fd = fd; |
16115b0a | 3914 | s->socket_fd_selinux_context_net = selinux_context_net; |
6cf6bbc2 | 3915 | |
7f7d01ed | 3916 | unit_ref_set(&s->accept_socket, UNIT(s), UNIT(sock)); |
7f2fbbff | 3917 | return 0; |
4f2d528d LP |
3918 | } |
3919 | ||
fdf20a31 | 3920 | static void service_reset_failed(Unit *u) { |
5632e374 LP |
3921 | Service *s = SERVICE(u); |
3922 | ||
3923 | assert(s); | |
3924 | ||
fdf20a31 | 3925 | if (s->state == SERVICE_FAILED) |
5632e374 LP |
3926 | service_set_state(s, SERVICE_DEAD); |
3927 | ||
f42806df LP |
3928 | s->result = SERVICE_SUCCESS; |
3929 | s->reload_result = SERVICE_SUCCESS; | |
7a0019d3 LP |
3930 | s->n_restarts = 0; |
3931 | s->flush_n_restarts = false; | |
5632e374 LP |
3932 | } |
3933 | ||
718db961 | 3934 | static int service_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
8a0867d6 | 3935 | Service *s = SERVICE(u); |
41efeaec | 3936 | |
a6951a50 LP |
3937 | assert(s); |
3938 | ||
814cc562 | 3939 | return unit_kill_common(u, who, signo, s->main_pid, s->control_pid, error); |
8a0867d6 LP |
3940 | } |
3941 | ||
291d565a LP |
3942 | static int service_main_pid(Unit *u) { |
3943 | Service *s = SERVICE(u); | |
3944 | ||
3945 | assert(s); | |
3946 | ||
3947 | return s->main_pid; | |
3948 | } | |
3949 | ||
3950 | static int service_control_pid(Unit *u) { | |
3951 | Service *s = SERVICE(u); | |
3952 | ||
3953 | assert(s); | |
3954 | ||
3955 | return s->control_pid; | |
3956 | } | |
3957 | ||
bb2c7685 LP |
3958 | static bool service_needs_console(Unit *u) { |
3959 | Service *s = SERVICE(u); | |
3960 | ||
3961 | assert(s); | |
3962 | ||
3963 | /* We provide our own implementation of this here, instead of relying of the generic implementation | |
3964 | * unit_needs_console() provides, since we want to return false if we are in SERVICE_EXITED state. */ | |
3965 | ||
3966 | if (!exec_context_may_touch_console(&s->exec_context)) | |
3967 | return false; | |
3968 | ||
3969 | return IN_SET(s->state, | |
3970 | SERVICE_START_PRE, | |
3971 | SERVICE_START, | |
3972 | SERVICE_START_POST, | |
3973 | SERVICE_RUNNING, | |
3974 | SERVICE_RELOAD, | |
3975 | SERVICE_STOP, | |
c87700a1 | 3976 | SERVICE_STOP_WATCHDOG, |
bb2c7685 LP |
3977 | SERVICE_STOP_SIGTERM, |
3978 | SERVICE_STOP_SIGKILL, | |
3979 | SERVICE_STOP_POST, | |
3980 | SERVICE_FINAL_SIGTERM, | |
3981 | SERVICE_FINAL_SIGKILL); | |
3982 | } | |
3983 | ||
94f04347 | 3984 | static const char* const service_restart_table[_SERVICE_RESTART_MAX] = { |
525ee6f4 LP |
3985 | [SERVICE_RESTART_NO] = "no", |
3986 | [SERVICE_RESTART_ON_SUCCESS] = "on-success", | |
50caaedb | 3987 | [SERVICE_RESTART_ON_FAILURE] = "on-failure", |
6cfe2fde | 3988 | [SERVICE_RESTART_ON_ABNORMAL] = "on-abnormal", |
dc99a976 | 3989 | [SERVICE_RESTART_ON_WATCHDOG] = "on-watchdog", |
50caaedb | 3990 | [SERVICE_RESTART_ON_ABORT] = "on-abort", |
6cfe2fde | 3991 | [SERVICE_RESTART_ALWAYS] = "always", |
94f04347 LP |
3992 | }; |
3993 | ||
3994 | DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart); | |
3995 | ||
3996 | static const char* const service_type_table[_SERVICE_TYPE_MAX] = { | |
94f04347 | 3997 | [SERVICE_SIMPLE] = "simple", |
0d624a78 | 3998 | [SERVICE_FORKING] = "forking", |
34e9ba66 | 3999 | [SERVICE_ONESHOT] = "oneshot", |
8c47c732 | 4000 | [SERVICE_DBUS] = "dbus", |
f2b68789 | 4001 | [SERVICE_NOTIFY] = "notify", |
5686391b LP |
4002 | [SERVICE_IDLE] = "idle", |
4003 | [SERVICE_EXEC] = "exec", | |
94f04347 LP |
4004 | }; |
4005 | ||
4006 | DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType); | |
4007 | ||
e537352b | 4008 | static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = { |
94f04347 LP |
4009 | [SERVICE_EXEC_START_PRE] = "ExecStartPre", |
4010 | [SERVICE_EXEC_START] = "ExecStart", | |
4011 | [SERVICE_EXEC_START_POST] = "ExecStartPost", | |
4012 | [SERVICE_EXEC_RELOAD] = "ExecReload", | |
4013 | [SERVICE_EXEC_STOP] = "ExecStop", | |
4014 | [SERVICE_EXEC_STOP_POST] = "ExecStopPost", | |
4015 | }; | |
4016 | ||
4017 | DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand); | |
4018 | ||
308d72dc LP |
4019 | static const char* const notify_state_table[_NOTIFY_STATE_MAX] = { |
4020 | [NOTIFY_UNKNOWN] = "unknown", | |
4021 | [NOTIFY_READY] = "ready", | |
4022 | [NOTIFY_RELOADING] = "reloading", | |
4023 | [NOTIFY_STOPPING] = "stopping", | |
4024 | }; | |
4025 | ||
4026 | DEFINE_STRING_TABLE_LOOKUP(notify_state, NotifyState); | |
4027 | ||
f42806df LP |
4028 | static const char* const service_result_table[_SERVICE_RESULT_MAX] = { |
4029 | [SERVICE_SUCCESS] = "success", | |
4030 | [SERVICE_FAILURE_RESOURCES] = "resources", | |
c35755fb | 4031 | [SERVICE_FAILURE_PROTOCOL] = "protocol", |
f42806df LP |
4032 | [SERVICE_FAILURE_TIMEOUT] = "timeout", |
4033 | [SERVICE_FAILURE_EXIT_CODE] = "exit-code", | |
4034 | [SERVICE_FAILURE_SIGNAL] = "signal", | |
bb242b7b | 4035 | [SERVICE_FAILURE_CORE_DUMP] = "core-dump", |
8d1b002a | 4036 | [SERVICE_FAILURE_WATCHDOG] = "watchdog", |
07299350 | 4037 | [SERVICE_FAILURE_START_LIMIT_HIT] = "start-limit-hit", |
f42806df LP |
4038 | }; |
4039 | ||
4040 | DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult); | |
4041 | ||
87f0e418 | 4042 | const UnitVTable service_vtable = { |
7d17cfbc | 4043 | .object_size = sizeof(Service), |
718db961 LP |
4044 | .exec_context_offset = offsetof(Service, exec_context), |
4045 | .cgroup_context_offset = offsetof(Service, cgroup_context), | |
4046 | .kill_context_offset = offsetof(Service, kill_context), | |
613b411c | 4047 | .exec_runtime_offset = offsetof(Service, exec_runtime), |
29206d46 | 4048 | .dynamic_creds_offset = offsetof(Service, dynamic_creds), |
3ef63c31 | 4049 | |
f975e971 LP |
4050 | .sections = |
4051 | "Unit\0" | |
4052 | "Service\0" | |
4053 | "Install\0", | |
4ad49000 | 4054 | .private_section = "Service", |
71645aca | 4055 | |
1d9cc876 LP |
4056 | .can_transient = true, |
4057 | .can_delegate = true, | |
4058 | ||
034c6ed7 LP |
4059 | .init = service_init, |
4060 | .done = service_done, | |
a16e1123 | 4061 | .load = service_load, |
a354329f | 4062 | .release_resources = service_release_resources, |
a16e1123 LP |
4063 | |
4064 | .coldplug = service_coldplug, | |
034c6ed7 | 4065 | |
5cb5a6ff LP |
4066 | .dump = service_dump, |
4067 | ||
4068 | .start = service_start, | |
4069 | .stop = service_stop, | |
4070 | .reload = service_reload, | |
4071 | ||
034c6ed7 LP |
4072 | .can_reload = service_can_reload, |
4073 | ||
8a0867d6 LP |
4074 | .kill = service_kill, |
4075 | ||
a16e1123 LP |
4076 | .serialize = service_serialize, |
4077 | .deserialize_item = service_deserialize_item, | |
4078 | ||
5cb5a6ff | 4079 | .active_state = service_active_state, |
10a94420 | 4080 | .sub_state_to_string = service_sub_state_to_string, |
5cb5a6ff | 4081 | |
deb4e708 MK |
4082 | .will_restart = service_will_restart, |
4083 | ||
f2f725e5 | 4084 | .may_gc = service_may_gc, |
701cc384 | 4085 | |
034c6ed7 | 4086 | .sigchld_event = service_sigchld_event, |
2c4104f0 | 4087 | |
fdf20a31 | 4088 | .reset_failed = service_reset_failed, |
5632e374 | 4089 | |
4ad49000 | 4090 | .notify_cgroup_empty = service_notify_cgroup_empty_event, |
8c47c732 | 4091 | .notify_message = service_notify_message, |
8e274523 | 4092 | |
291d565a LP |
4093 | .main_pid = service_main_pid, |
4094 | .control_pid = service_control_pid, | |
4095 | ||
05e343b7 | 4096 | .bus_name_owner_change = service_bus_name_owner_change, |
05e343b7 | 4097 | |
718db961 | 4098 | .bus_vtable = bus_service_vtable, |
74c964d3 LP |
4099 | .bus_set_property = bus_service_set_property, |
4100 | .bus_commit_properties = bus_service_commit_properties, | |
4139c1b2 | 4101 | |
68db7a3b | 4102 | .get_timeout = service_get_timeout, |
bb2c7685 | 4103 | .needs_console = service_needs_console, |
718db961 | 4104 | |
c6918296 MS |
4105 | .status_message_formats = { |
4106 | .starting_stopping = { | |
4107 | [0] = "Starting %s...", | |
4108 | [1] = "Stopping %s...", | |
4109 | }, | |
4110 | .finished_start_job = { | |
4111 | [JOB_DONE] = "Started %s.", | |
4112 | [JOB_FAILED] = "Failed to start %s.", | |
c6918296 MS |
4113 | }, |
4114 | .finished_stop_job = { | |
4115 | [JOB_DONE] = "Stopped %s.", | |
4116 | [JOB_FAILED] = "Stopped (with error) %s.", | |
c6918296 MS |
4117 | }, |
4118 | }, | |
5cb5a6ff | 4119 | }; |