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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 | ||
3f00d379 ZJS |
541 | if (!s->exec_command[SERVICE_EXEC_START] && !s->exec_command[SERVICE_EXEC_STOP] |
542 | && UNIT(s)->success_action == EMERGENCY_ACTION_NONE) { | |
543 | /* FailureAction= only makes sense if one of the start or stop commands is specified. | |
544 | * SuccessAction= will be executed unconditionally if no commands are specified. Hence, | |
545 | * either a command or SuccessAction= are required. */ | |
546 | ||
547 | log_unit_error(UNIT(s), "Service has no ExecStart=, ExecStop=, or SuccessAction=. Refusing."); | |
6f40aa45 | 548 | return -ENOEXEC; |
243b1432 LP |
549 | } |
550 | ||
96fb8242 | 551 | if (s->type != SERVICE_ONESHOT && !s->exec_command[SERVICE_EXEC_START]) { |
f2341e0a | 552 | log_unit_error(UNIT(s), "Service has no ExecStart= setting, which is only allowed for Type=oneshot services. Refusing."); |
6f40aa45 | 553 | return -ENOEXEC; |
96fb8242 LP |
554 | } |
555 | ||
3f00d379 ZJS |
556 | if (!s->remain_after_exit && !s->exec_command[SERVICE_EXEC_START] && UNIT(s)->success_action == EMERGENCY_ACTION_NONE) { |
557 | log_unit_error(UNIT(s), "Service has no ExecStart= and no SuccessAction= settings and does not have RemainAfterExit=yes set. Refusing."); | |
6f40aa45 | 558 | return -ENOEXEC; |
96fb8242 LP |
559 | } |
560 | ||
561 | if (s->type != SERVICE_ONESHOT && s->exec_command[SERVICE_EXEC_START]->command_next) { | |
f2341e0a | 562 | log_unit_error(UNIT(s), "Service has more than one ExecStart= setting, which is only allowed for Type=oneshot services. Refusing."); |
6f40aa45 | 563 | return -ENOEXEC; |
6cf6bbc2 LP |
564 | } |
565 | ||
b0693d30 | 566 | if (s->type == SERVICE_ONESHOT && s->restart != SERVICE_RESTART_NO) { |
f2341e0a | 567 | log_unit_error(UNIT(s), "Service has Restart= setting other than no, which isn't allowed for Type=oneshot services. Refusing."); |
6f40aa45 | 568 | return -ENOEXEC; |
37520c1b LP |
569 | } |
570 | ||
55ebf98c | 571 | if (s->type == SERVICE_ONESHOT && !exit_status_set_is_empty(&s->restart_force_status)) { |
f2341e0a | 572 | log_unit_error(UNIT(s), "Service has RestartForceStatus= set, which isn't allowed for Type=oneshot services. Refusing."); |
6f40aa45 | 573 | return -ENOEXEC; |
b0693d30 MW |
574 | } |
575 | ||
05e343b7 | 576 | if (s->type == SERVICE_DBUS && !s->bus_name) { |
f2341e0a | 577 | log_unit_error(UNIT(s), "Service is of type D-Bus but no D-Bus service name has been specified. Refusing."); |
6f40aa45 | 578 | return -ENOEXEC; |
4d0e5dbd LP |
579 | } |
580 | ||
7e2668c6 | 581 | if (s->bus_name && s->type != SERVICE_DBUS) |
f2341e0a | 582 | log_unit_warning(UNIT(s), "Service has a D-Bus service name specified, but is not of type dbus. Ignoring."); |
7e2668c6 | 583 | |
3742095b | 584 | if (s->exec_context.pam_name && !IN_SET(s->kill_context.kill_mode, KILL_CONTROL_GROUP, KILL_MIXED)) { |
f2341e0a | 585 | log_unit_error(UNIT(s), "Service has PAM enabled. Kill mode must be set to 'control-group' or 'mixed'. Refusing."); |
6f40aa45 | 586 | return -ENOEXEC; |
05e343b7 LP |
587 | } |
588 | ||
6b7e5923 PS |
589 | if (s->usb_function_descriptors && !s->usb_function_strings) |
590 | log_unit_warning(UNIT(s), "Service has USBFunctionDescriptors= setting, but no USBFunctionStrings=. Ignoring."); | |
591 | ||
592 | if (!s->usb_function_descriptors && s->usb_function_strings) | |
593 | log_unit_warning(UNIT(s), "Service has USBFunctionStrings= setting, but no USBFunctionDescriptors=. Ignoring."); | |
594 | ||
36c16a7c LP |
595 | if (s->runtime_max_usec != USEC_INFINITY && s->type == SERVICE_ONESHOT) |
596 | log_unit_warning(UNIT(s), "MaxRuntimeSec= has no effect in combination with Type=oneshot. Ignoring."); | |
597 | ||
243b1432 LP |
598 | return 0; |
599 | } | |
600 | ||
a40eb732 LP |
601 | static int service_add_default_dependencies(Service *s) { |
602 | int r; | |
603 | ||
604 | assert(s); | |
605 | ||
45f06b34 LP |
606 | if (!UNIT(s)->default_dependencies) |
607 | return 0; | |
608 | ||
a40eb732 LP |
609 | /* Add a number of automatic dependencies useful for the |
610 | * majority of services. */ | |
611 | ||
463d0d15 | 612 | if (MANAGER_IS_SYSTEM(UNIT(s)->manager)) { |
cb4c247d LP |
613 | /* First, pull in the really early boot stuff, and |
614 | * require it, so that we fail if we can't acquire | |
615 | * it. */ | |
616 | ||
5a724170 | 617 | r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
cb4c247d LP |
618 | if (r < 0) |
619 | return r; | |
620 | } else { | |
621 | ||
622 | /* In the --user instance there's no sysinit.target, | |
623 | * in that case require basic.target instead. */ | |
624 | ||
35d8c19a | 625 | r = unit_add_dependency_by_name(UNIT(s), UNIT_REQUIRES, SPECIAL_BASIC_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
cb4c247d LP |
626 | if (r < 0) |
627 | return r; | |
628 | } | |
629 | ||
630 | /* Second, if the rest of the base system is in the same | |
631 | * transaction, order us after it, but do not pull it in or | |
632 | * even require it. */ | |
35d8c19a | 633 | r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_BASIC_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
fccd44ec KS |
634 | if (r < 0) |
635 | return r; | |
a40eb732 | 636 | |
cb4c247d | 637 | /* Third, add us in for normal shutdown. */ |
5a724170 | 638 | return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
a40eb732 LP |
639 | } |
640 | ||
4dfc092a LP |
641 | static void service_fix_output(Service *s) { |
642 | assert(s); | |
643 | ||
08f3be7a LP |
644 | /* If nothing has been explicitly configured, patch default output in. If input is socket/tty we avoid this |
645 | * however, since in that case we want output to default to the same place as we read input from. */ | |
4dfc092a LP |
646 | |
647 | if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT && | |
648 | s->exec_context.std_output == EXEC_OUTPUT_INHERIT && | |
649 | s->exec_context.std_input == EXEC_INPUT_NULL) | |
1124fe6f | 650 | s->exec_context.std_error = UNIT(s)->manager->default_std_error; |
4dfc092a LP |
651 | |
652 | if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT && | |
653 | s->exec_context.std_input == EXEC_INPUT_NULL) | |
1124fe6f | 654 | s->exec_context.std_output = UNIT(s)->manager->default_std_output; |
08f3be7a LP |
655 | |
656 | if (s->exec_context.std_input == EXEC_INPUT_NULL && | |
657 | s->exec_context.stdin_data_size > 0) | |
658 | s->exec_context.std_input = EXEC_INPUT_DATA; | |
4dfc092a LP |
659 | } |
660 | ||
45f06b34 LP |
661 | static int service_setup_bus_name(Service *s) { |
662 | int r; | |
663 | ||
664 | assert(s); | |
665 | ||
666 | if (!s->bus_name) | |
667 | return 0; | |
668 | ||
35d8c19a | 669 | r = unit_add_dependency_by_name(UNIT(s), UNIT_REQUIRES, SPECIAL_DBUS_SOCKET, true, UNIT_DEPENDENCY_FILE); |
222953e8 DR |
670 | if (r < 0) |
671 | return log_unit_error_errno(UNIT(s), r, "Failed to add dependency on " SPECIAL_DBUS_SOCKET ": %m"); | |
45f06b34 | 672 | |
a132bef0 | 673 | /* We always want to be ordered against dbus.socket if both are in the transaction. */ |
35d8c19a | 674 | r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_DBUS_SOCKET, true, UNIT_DEPENDENCY_FILE); |
45f06b34 | 675 | if (r < 0) |
92bed462 | 676 | return log_unit_error_errno(UNIT(s), r, "Failed to add dependency on " SPECIAL_DBUS_SOCKET ": %m"); |
45f06b34 LP |
677 | |
678 | r = unit_watch_bus_name(UNIT(s), s->bus_name); | |
679 | if (r == -EEXIST) | |
680 | return log_unit_error_errno(UNIT(s), r, "Two services allocated for the same bus name %s, refusing operation.", s->bus_name); | |
681 | if (r < 0) | |
682 | return log_unit_error_errno(UNIT(s), r, "Cannot watch bus name %s: %m", s->bus_name); | |
683 | ||
684 | return 0; | |
685 | } | |
686 | ||
8545f7ce LP |
687 | static int service_add_extras(Service *s) { |
688 | int r; | |
689 | ||
690 | assert(s); | |
691 | ||
692 | if (s->type == _SERVICE_TYPE_INVALID) { | |
693 | /* Figure out a type automatically */ | |
694 | if (s->bus_name) | |
695 | s->type = SERVICE_DBUS; | |
696 | else if (s->exec_command[SERVICE_EXEC_START]) | |
697 | s->type = SERVICE_SIMPLE; | |
698 | else | |
699 | s->type = SERVICE_ONESHOT; | |
700 | } | |
701 | ||
702 | /* Oneshot services have disabled start timeout by default */ | |
703 | if (s->type == SERVICE_ONESHOT && !s->start_timeout_defined) | |
36c16a7c | 704 | s->timeout_start_usec = USEC_INFINITY; |
8545f7ce LP |
705 | |
706 | service_fix_output(s); | |
707 | ||
708 | r = unit_patch_contexts(UNIT(s)); | |
709 | if (r < 0) | |
710 | return r; | |
711 | ||
712 | r = unit_add_exec_dependencies(UNIT(s), &s->exec_context); | |
713 | if (r < 0) | |
714 | return r; | |
715 | ||
d79200e2 | 716 | r = unit_set_default_slice(UNIT(s)); |
8545f7ce LP |
717 | if (r < 0) |
718 | return r; | |
719 | ||
4330dc03 AJ |
720 | /* If the service needs the notify socket, let's enable it automatically. */ |
721 | if (s->notify_access == NOTIFY_NONE && | |
722 | (s->type == SERVICE_NOTIFY || s->watchdog_usec > 0 || s->n_fd_store_max > 0)) | |
8545f7ce LP |
723 | s->notify_access = NOTIFY_MAIN; |
724 | ||
45f06b34 LP |
725 | r = service_add_default_dependencies(s); |
726 | if (r < 0) | |
727 | return r; | |
8545f7ce | 728 | |
45f06b34 LP |
729 | r = service_setup_bus_name(s); |
730 | if (r < 0) | |
731 | return r; | |
8545f7ce LP |
732 | |
733 | return 0; | |
734 | } | |
735 | ||
e537352b | 736 | static int service_load(Unit *u) { |
e537352b | 737 | Service *s = SERVICE(u); |
8bb2d17d | 738 | int r; |
e537352b LP |
739 | |
740 | assert(s); | |
1e2e8133 | 741 | |
5cb5a6ff | 742 | /* Load a .service file */ |
c2756a68 LP |
743 | r = unit_load_fragment(u); |
744 | if (r < 0) | |
5cb5a6ff LP |
745 | return r; |
746 | ||
23a177ef | 747 | /* Still nothing found? Then let's give up */ |
ac155bb8 | 748 | if (u->load_state == UNIT_STUB) |
23a177ef | 749 | return -ENOENT; |
034c6ed7 | 750 | |
23a177ef | 751 | /* This is a new unit? Then let's add in some extras */ |
ac155bb8 | 752 | if (u->load_state == UNIT_LOADED) { |
c2756a68 LP |
753 | |
754 | /* We were able to load something, then let's add in | |
755 | * the dropin directories. */ | |
756 | r = unit_load_dropin(u); | |
757 | if (r < 0) | |
758 | return r; | |
759 | ||
8545f7ce LP |
760 | /* This is a new unit? Then let's add in some |
761 | * extras */ | |
762 | r = service_add_extras(s); | |
598459ce LP |
763 | if (r < 0) |
764 | return r; | |
8e274523 LP |
765 | } |
766 | ||
243b1432 | 767 | return service_verify(s); |
034c6ed7 LP |
768 | } |
769 | ||
87f0e418 | 770 | static void service_dump(Unit *u, FILE *f, const char *prefix) { |
f2e18ef1 YW |
771 | char buf_restart[FORMAT_TIMESPAN_MAX], buf_start[FORMAT_TIMESPAN_MAX], buf_stop[FORMAT_TIMESPAN_MAX]; |
772 | char buf_runtime[FORMAT_TIMESPAN_MAX], buf_watchdog[FORMAT_TIMESPAN_MAX]; | |
5cb5a6ff | 773 | ServiceExecCommand c; |
87f0e418 | 774 | Service *s = SERVICE(u); |
47be870b | 775 | const char *prefix2; |
5cb5a6ff LP |
776 | |
777 | assert(s); | |
778 | ||
4c940960 | 779 | prefix = strempty(prefix); |
63c372cb | 780 | prefix2 = strjoina(prefix, "\t"); |
44d8db9e | 781 | |
5cb5a6ff | 782 | fprintf(f, |
81a2b7ce | 783 | "%sService State: %s\n" |
f42806df LP |
784 | "%sResult: %s\n" |
785 | "%sReload Result: %s\n" | |
81a2b7ce | 786 | "%sPermissionsStartOnly: %s\n" |
8e274523 | 787 | "%sRootDirectoryStartOnly: %s\n" |
02ee865a | 788 | "%sRemainAfterExit: %s\n" |
3185a36b | 789 | "%sGuessMainPID: %s\n" |
c952c6ec | 790 | "%sType: %s\n" |
2cf3143a | 791 | "%sRestart: %s\n" |
308d72dc LP |
792 | "%sNotifyAccess: %s\n" |
793 | "%sNotifyState: %s\n", | |
81a2b7ce | 794 | prefix, service_state_to_string(s->state), |
f42806df LP |
795 | prefix, service_result_to_string(s->result), |
796 | prefix, service_result_to_string(s->reload_result), | |
81a2b7ce | 797 | prefix, yes_no(s->permissions_start_only), |
8e274523 | 798 | prefix, yes_no(s->root_directory_start_only), |
02ee865a | 799 | prefix, yes_no(s->remain_after_exit), |
3185a36b | 800 | prefix, yes_no(s->guess_main_pid), |
c952c6ec | 801 | prefix, service_type_to_string(s->type), |
2cf3143a | 802 | prefix, service_restart_to_string(s->restart), |
308d72dc LP |
803 | prefix, notify_access_to_string(s->notify_access), |
804 | prefix, notify_state_to_string(s->notify_state)); | |
5cb5a6ff | 805 | |
70123e68 LP |
806 | if (s->control_pid > 0) |
807 | fprintf(f, | |
ccd06097 ZJS |
808 | "%sControl PID: "PID_FMT"\n", |
809 | prefix, s->control_pid); | |
70123e68 LP |
810 | |
811 | if (s->main_pid > 0) | |
812 | fprintf(f, | |
ccd06097 | 813 | "%sMain PID: "PID_FMT"\n" |
6dfa5494 LP |
814 | "%sMain PID Known: %s\n" |
815 | "%sMain PID Alien: %s\n", | |
ccd06097 | 816 | prefix, s->main_pid, |
6dfa5494 LP |
817 | prefix, yes_no(s->main_pid_known), |
818 | prefix, yes_no(s->main_pid_alien)); | |
70123e68 | 819 | |
034c6ed7 LP |
820 | if (s->pid_file) |
821 | fprintf(f, | |
822 | "%sPIDFile: %s\n", | |
823 | prefix, s->pid_file); | |
824 | ||
05e343b7 LP |
825 | if (s->bus_name) |
826 | fprintf(f, | |
827 | "%sBusName: %s\n" | |
828 | "%sBus Name Good: %s\n", | |
829 | prefix, s->bus_name, | |
830 | prefix, yes_no(s->bus_name_good)); | |
831 | ||
9dfb64f8 ZJS |
832 | if (UNIT_ISSET(s->accept_socket)) |
833 | fprintf(f, | |
834 | "%sAccept Socket: %s\n", | |
835 | prefix, UNIT_DEREF(s->accept_socket)->id); | |
836 | ||
c9d41699 YW |
837 | fprintf(f, |
838 | "%sRestartSec: %s\n" | |
839 | "%sTimeoutStartSec: %s\n" | |
840 | "%sTimeoutStopSec: %s\n" | |
841 | "%sRuntimeMaxSec: %s\n" | |
842 | "%sWatchdogSec: %s\n", | |
843 | prefix, format_timespan(buf_restart, sizeof(buf_restart), s->restart_usec, USEC_PER_SEC), | |
844 | prefix, format_timespan(buf_start, sizeof(buf_start), s->timeout_start_usec, USEC_PER_SEC), | |
845 | prefix, format_timespan(buf_stop, sizeof(buf_stop), s->timeout_stop_usec, USEC_PER_SEC), | |
846 | prefix, format_timespan(buf_runtime, sizeof(buf_runtime), s->runtime_max_usec, USEC_PER_SEC), | |
847 | prefix, format_timespan(buf_watchdog, sizeof(buf_watchdog), s->watchdog_usec, USEC_PER_SEC)); | |
848 | ||
4819ff03 | 849 | kill_context_dump(&s->kill_context, f, prefix); |
5cb5a6ff LP |
850 | exec_context_dump(&s->exec_context, f, prefix); |
851 | ||
e537352b | 852 | for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) { |
5cb5a6ff | 853 | |
44d8db9e LP |
854 | if (!s->exec_command[c]) |
855 | continue; | |
856 | ||
40d50879 | 857 | fprintf(f, "%s-> %s:\n", |
94f04347 | 858 | prefix, service_exec_command_to_string(c)); |
44d8db9e LP |
859 | |
860 | exec_command_dump_list(s->exec_command[c], f, prefix2); | |
5cb5a6ff | 861 | } |
44d8db9e | 862 | |
8c47c732 LP |
863 | if (s->status_text) |
864 | fprintf(f, "%sStatus Text: %s\n", | |
865 | prefix, s->status_text); | |
a354329f | 866 | |
ece174c5 | 867 | if (s->n_fd_store_max > 0) |
a354329f LP |
868 | fprintf(f, |
869 | "%sFile Descriptor Store Max: %u\n" | |
da6053d0 | 870 | "%sFile Descriptor Store Current: %zu\n", |
a354329f LP |
871 | prefix, s->n_fd_store_max, |
872 | prefix, s->n_fd_store); | |
18f573aa LP |
873 | |
874 | cgroup_context_dump(&s->cgroup_context, f, prefix); | |
5cb5a6ff LP |
875 | } |
876 | ||
db256aab LP |
877 | static int service_is_suitable_main_pid(Service *s, pid_t pid, int prio) { |
878 | Unit *owner; | |
879 | ||
880 | assert(s); | |
881 | assert(pid_is_valid(pid)); | |
882 | ||
883 | /* Checks whether the specified PID is suitable as main PID for this service. returns negative if not, 0 if the | |
884 | * PID is questionnable but should be accepted if the source of configuration is trusted. > 0 if the PID is | |
885 | * good */ | |
886 | ||
887 | if (pid == getpid_cached() || pid == 1) { | |
888 | log_unit_full(UNIT(s), prio, 0, "New main PID "PID_FMT" is the manager, refusing.", pid); | |
889 | return -EPERM; | |
890 | } | |
891 | ||
892 | if (pid == s->control_pid) { | |
893 | log_unit_full(UNIT(s), prio, 0, "New main PID "PID_FMT" is the control process, refusing.", pid); | |
894 | return -EPERM; | |
895 | } | |
896 | ||
897 | if (!pid_is_alive(pid)) { | |
898 | log_unit_full(UNIT(s), prio, 0, "New main PID "PID_FMT" does not exist or is a zombie.", pid); | |
899 | return -ESRCH; | |
900 | } | |
901 | ||
902 | owner = manager_get_unit_by_pid(UNIT(s)->manager, pid); | |
903 | if (owner == UNIT(s)) { | |
904 | log_unit_debug(UNIT(s), "New main PID "PID_FMT" belongs to service, we are happy.", pid); | |
905 | return 1; /* Yay, it's definitely a good PID */ | |
906 | } | |
907 | ||
908 | return 0; /* Hmm it's a suspicious PID, let's accept it if configuration source is trusted */ | |
909 | } | |
910 | ||
c5419d42 | 911 | static int service_load_pid_file(Service *s, bool may_warn) { |
db256aab | 912 | char procfs[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; |
73969ab6 | 913 | bool questionable_pid_file = false; |
7fd1b19b | 914 | _cleanup_free_ char *k = NULL; |
db256aab LP |
915 | _cleanup_close_ int fd = -1; |
916 | int r, prio; | |
5925dd3c | 917 | pid_t pid; |
034c6ed7 LP |
918 | |
919 | assert(s); | |
920 | ||
034c6ed7 | 921 | if (!s->pid_file) |
13230d5d | 922 | return -ENOENT; |
034c6ed7 | 923 | |
db256aab LP |
924 | prio = may_warn ? LOG_INFO : LOG_DEBUG; |
925 | ||
926 | fd = chase_symlinks(s->pid_file, NULL, CHASE_OPEN|CHASE_SAFE, NULL); | |
73969ab6 LP |
927 | if (fd == -EPERM) { |
928 | 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); | |
929 | ||
930 | questionable_pid_file = true; | |
931 | ||
932 | fd = chase_symlinks(s->pid_file, NULL, CHASE_OPEN, NULL); | |
933 | } | |
db256aab LP |
934 | if (fd < 0) |
935 | 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)); | |
936 | ||
937 | /* 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. */ | |
938 | xsprintf(procfs, "/proc/self/fd/%i", fd); | |
939 | r = read_one_line_file(procfs, &k); | |
940 | if (r < 0) | |
941 | 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 | 942 | |
5925dd3c | 943 | r = parse_pid(k, &pid); |
db256aab LP |
944 | if (r < 0) |
945 | return log_unit_full(UNIT(s), prio, r, "Failed to parse PID from file %s: %m", s->pid_file); | |
946 | ||
947 | if (s->main_pid_known && pid == s->main_pid) | |
948 | return 0; | |
949 | ||
950 | r = service_is_suitable_main_pid(s, pid, prio); | |
951 | if (r < 0) | |
5925dd3c | 952 | return r; |
db256aab LP |
953 | if (r == 0) { |
954 | struct stat st; | |
406eaf93 | 955 | |
73969ab6 LP |
956 | if (questionable_pid_file) { |
957 | log_unit_error(UNIT(s), "Refusing to accept PID outside of service control group, acquired through unsafe symlink chain: %s", s->pid_file); | |
958 | return -EPERM; | |
959 | } | |
960 | ||
db256aab LP |
961 | /* Hmm, it's not clear if the new main PID is safe. Let's allow this if the PID file is owned by root */ |
962 | ||
963 | if (fstat(fd, &st) < 0) | |
964 | return log_unit_error_errno(UNIT(s), errno, "Failed to fstat() PID file O_PATH fd: %m"); | |
965 | ||
966 | if (st.st_uid != 0) { | |
967 | 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); | |
968 | return -EPERM; | |
969 | } | |
970 | ||
971 | 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 |
972 | } |
973 | ||
db01f8b3 | 974 | if (s->main_pid_known) { |
f2341e0a | 975 | log_unit_debug(UNIT(s), "Main PID changing: "PID_FMT" -> "PID_FMT, s->main_pid, pid); |
8bb2d17d | 976 | |
db01f8b3 MS |
977 | service_unwatch_main_pid(s); |
978 | s->main_pid_known = false; | |
3a111838 | 979 | } else |
f2341e0a | 980 | log_unit_debug(UNIT(s), "Main PID loaded: "PID_FMT, pid); |
db01f8b3 | 981 | |
117dcc57 ZJS |
982 | r = service_set_main_pid(s, pid); |
983 | if (r < 0) | |
16f6025e LP |
984 | return r; |
985 | ||
117dcc57 | 986 | r = unit_watch_pid(UNIT(s), pid); |
e8b509d3 LP |
987 | if (r < 0) /* FIXME: we need to do something here */ |
988 | return log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" for service: %m", pid); | |
034c6ed7 | 989 | |
db256aab | 990 | return 1; |
034c6ed7 LP |
991 | } |
992 | ||
783e05d6 | 993 | static void service_search_main_pid(Service *s) { |
efdb0237 | 994 | pid_t pid = 0; |
4fbf50b3 LP |
995 | int r; |
996 | ||
997 | assert(s); | |
998 | ||
3185a36b LP |
999 | /* If we know it anyway, don't ever fallback to unreliable |
1000 | * heuristics */ | |
4fbf50b3 | 1001 | if (s->main_pid_known) |
783e05d6 | 1002 | return; |
4fbf50b3 | 1003 | |
3185a36b | 1004 | if (!s->guess_main_pid) |
783e05d6 | 1005 | return; |
3185a36b | 1006 | |
4fbf50b3 LP |
1007 | assert(s->main_pid <= 0); |
1008 | ||
783e05d6 ZJS |
1009 | if (unit_search_main_pid(UNIT(s), &pid) < 0) |
1010 | return; | |
4fbf50b3 | 1011 | |
f2341e0a | 1012 | log_unit_debug(UNIT(s), "Main PID guessed: "PID_FMT, pid); |
783e05d6 ZJS |
1013 | if (service_set_main_pid(s, pid) < 0) |
1014 | return; | |
4fbf50b3 | 1015 | |
117dcc57 | 1016 | r = unit_watch_pid(UNIT(s), pid); |
783e05d6 | 1017 | if (r < 0) |
4fbf50b3 | 1018 | /* FIXME: we need to do something here */ |
f2341e0a | 1019 | log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" from: %m", pid); |
4fbf50b3 LP |
1020 | } |
1021 | ||
034c6ed7 LP |
1022 | static void service_set_state(Service *s, ServiceState state) { |
1023 | ServiceState old_state; | |
e056b01d | 1024 | const UnitActiveState *table; |
842129f5 | 1025 | |
5cb5a6ff LP |
1026 | assert(s); |
1027 | ||
e056b01d LP |
1028 | table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
1029 | ||
034c6ed7 | 1030 | old_state = s->state; |
5cb5a6ff | 1031 | s->state = state; |
034c6ed7 | 1032 | |
3a111838 MS |
1033 | service_unwatch_pid_file(s); |
1034 | ||
842129f5 LP |
1035 | if (!IN_SET(state, |
1036 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
36c16a7c | 1037 | SERVICE_RUNNING, |
842129f5 | 1038 | SERVICE_RELOAD, |
c87700a1 | 1039 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
842129f5 LP |
1040 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL, |
1041 | SERVICE_AUTO_RESTART)) | |
718db961 | 1042 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
034c6ed7 | 1043 | |
842129f5 LP |
1044 | if (!IN_SET(state, |
1045 | SERVICE_START, SERVICE_START_POST, | |
1046 | SERVICE_RUNNING, SERVICE_RELOAD, | |
c87700a1 | 1047 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf108e55 | 1048 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
5e94833f | 1049 | service_unwatch_main_pid(s); |
867b3b7d LP |
1050 | s->main_command = NULL; |
1051 | } | |
034c6ed7 | 1052 | |
842129f5 LP |
1053 | if (!IN_SET(state, |
1054 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
1055 | SERVICE_RELOAD, | |
c87700a1 | 1056 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
842129f5 | 1057 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
5e94833f | 1058 | service_unwatch_control_pid(s); |
034c6ed7 | 1059 | s->control_command = NULL; |
a16e1123 | 1060 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; |
e537352b | 1061 | } |
034c6ed7 | 1062 | |
50be4f4a | 1063 | if (IN_SET(state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART)) { |
a911bb9a | 1064 | unit_unwatch_all_pids(UNIT(s)); |
50be4f4a LP |
1065 | unit_dequeue_rewatch_pids(UNIT(s)); |
1066 | } | |
a911bb9a | 1067 | |
842129f5 LP |
1068 | if (!IN_SET(state, |
1069 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
1070 | SERVICE_RUNNING, SERVICE_RELOAD, | |
c87700a1 | 1071 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
57614eb1 | 1072 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL) && |
5cc3985e | 1073 | !(state == SERVICE_DEAD && UNIT(s)->job)) |
4f2d528d LP |
1074 | service_close_socket_fd(s); |
1075 | ||
5686391b LP |
1076 | if (state != SERVICE_START) |
1077 | s->exec_fd_event_source = sd_event_source_unref(s->exec_fd_event_source); | |
1078 | ||
7596e9e1 | 1079 | if (!IN_SET(state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
a6927d7f MO |
1080 | service_stop_watchdog(s); |
1081 | ||
f6023656 LP |
1082 | /* For the inactive states unit_notify() will trim the cgroup, |
1083 | * but for exit we have to do that ourselves... */ | |
2c289ea8 | 1084 | if (state == SERVICE_EXITED && !MANAGER_IS_RELOADING(UNIT(s)->manager)) |
efdb0237 | 1085 | unit_prune_cgroup(UNIT(s)); |
f6023656 | 1086 | |
e537352b | 1087 | if (old_state != state) |
f2341e0a | 1088 | log_unit_debug(UNIT(s), "Changed %s -> %s", service_state_to_string(old_state), service_state_to_string(state)); |
acbb0225 | 1089 | |
2ad2e41a LP |
1090 | unit_notify(UNIT(s), table[old_state], table[state], |
1091 | (s->reload_result == SERVICE_SUCCESS ? 0 : UNIT_NOTIFY_RELOAD_FAILURE) | | |
1092 | (s->will_auto_restart ? UNIT_NOTIFY_WILL_AUTO_RESTART : 0)); | |
034c6ed7 LP |
1093 | } |
1094 | ||
36c16a7c LP |
1095 | static usec_t service_coldplug_timeout(Service *s) { |
1096 | assert(s); | |
1097 | ||
1098 | switch (s->deserialized_state) { | |
1099 | ||
1100 | case SERVICE_START_PRE: | |
1101 | case SERVICE_START: | |
1102 | case SERVICE_START_POST: | |
1103 | case SERVICE_RELOAD: | |
1104 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->timeout_start_usec); | |
1105 | ||
1106 | case SERVICE_RUNNING: | |
1107 | return usec_add(UNIT(s)->active_enter_timestamp.monotonic, s->runtime_max_usec); | |
1108 | ||
1109 | case SERVICE_STOP: | |
c87700a1 | 1110 | case SERVICE_STOP_WATCHDOG: |
36c16a7c LP |
1111 | case SERVICE_STOP_SIGTERM: |
1112 | case SERVICE_STOP_SIGKILL: | |
1113 | case SERVICE_STOP_POST: | |
1114 | case SERVICE_FINAL_SIGTERM: | |
1115 | case SERVICE_FINAL_SIGKILL: | |
1116 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->timeout_stop_usec); | |
1117 | ||
1118 | case SERVICE_AUTO_RESTART: | |
1119 | return usec_add(UNIT(s)->inactive_enter_timestamp.monotonic, s->restart_usec); | |
1120 | ||
1121 | default: | |
1122 | return USEC_INFINITY; | |
1123 | } | |
1124 | } | |
1125 | ||
be847e82 | 1126 | static int service_coldplug(Unit *u) { |
a16e1123 LP |
1127 | Service *s = SERVICE(u); |
1128 | int r; | |
1129 | ||
1130 | assert(s); | |
1131 | assert(s->state == SERVICE_DEAD); | |
1132 | ||
930d2838 LP |
1133 | if (s->deserialized_state == s->state) |
1134 | return 0; | |
6c12b52e | 1135 | |
36c16a7c LP |
1136 | r = service_arm_timer(s, service_coldplug_timeout(s)); |
1137 | if (r < 0) | |
1138 | return r; | |
a911bb9a | 1139 | |
930d2838 LP |
1140 | if (s->main_pid > 0 && |
1141 | pid_is_unwaited(s->main_pid) && | |
9acac212 | 1142 | (IN_SET(s->deserialized_state, |
930d2838 LP |
1143 | SERVICE_START, SERVICE_START_POST, |
1144 | SERVICE_RUNNING, SERVICE_RELOAD, | |
c87700a1 | 1145 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
930d2838 LP |
1146 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL))) { |
1147 | r = unit_watch_pid(UNIT(s), s->main_pid); | |
1148 | if (r < 0) | |
1149 | return r; | |
1150 | } | |
bb242b7b | 1151 | |
930d2838 LP |
1152 | if (s->control_pid > 0 && |
1153 | pid_is_unwaited(s->control_pid) && | |
1154 | IN_SET(s->deserialized_state, | |
1155 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
1156 | SERVICE_RELOAD, | |
c87700a1 | 1157 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
930d2838 LP |
1158 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
1159 | r = unit_watch_pid(UNIT(s), s->control_pid); | |
1160 | if (r < 0) | |
1161 | return r; | |
a16e1123 | 1162 | } |
92c1622e | 1163 | |
e8a565cb | 1164 | if (!IN_SET(s->deserialized_state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART)) { |
50be4f4a | 1165 | (void) unit_enqueue_rewatch_pids(u); |
29206d46 | 1166 | (void) unit_setup_dynamic_creds(u); |
e8a565cb YW |
1167 | (void) unit_setup_exec_runtime(u); |
1168 | } | |
29206d46 | 1169 | |
50be4f4a LP |
1170 | if (IN_SET(s->deserialized_state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
1171 | service_start_watchdog(s); | |
1172 | ||
3ebcd323 ZJS |
1173 | if (UNIT_ISSET(s->accept_socket)) { |
1174 | Socket* socket = SOCKET(UNIT_DEREF(s->accept_socket)); | |
1175 | ||
1176 | if (socket->max_connections_per_source > 0) { | |
1177 | SocketPeer *peer; | |
1178 | ||
1179 | /* Make a best-effort attempt at bumping the connection count */ | |
1180 | if (socket_acquire_peer(socket, s->socket_fd, &peer) > 0) { | |
1181 | socket_peer_unref(s->peer); | |
1182 | s->peer = peer; | |
1183 | } | |
1184 | } | |
1185 | } | |
1186 | ||
930d2838 | 1187 | service_set_state(s, s->deserialized_state); |
a16e1123 LP |
1188 | return 0; |
1189 | } | |
1190 | ||
25b583d7 LP |
1191 | static int service_collect_fds( |
1192 | Service *s, | |
1193 | int **fds, | |
1194 | char ***fd_names, | |
1195 | size_t *n_socket_fds, | |
1196 | size_t *n_storage_fds) { | |
4c47affc | 1197 | |
8dd4c05b | 1198 | _cleanup_strv_free_ char **rfd_names = NULL; |
a354329f | 1199 | _cleanup_free_ int *rfds = NULL; |
25b583d7 | 1200 | size_t rn_socket_fds = 0, rn_storage_fds = 0; |
4c47affc | 1201 | int r; |
44d8db9e LP |
1202 | |
1203 | assert(s); | |
1204 | assert(fds); | |
8dd4c05b | 1205 | assert(fd_names); |
9b141911 | 1206 | assert(n_socket_fds); |
25b583d7 | 1207 | assert(n_storage_fds); |
44d8db9e | 1208 | |
8dd4c05b | 1209 | if (s->socket_fd >= 0) { |
6cf6bbc2 | 1210 | |
8dd4c05b | 1211 | /* Pass the per-connection socket */ |
57020a3a | 1212 | |
8dd4c05b LP |
1213 | rfds = new(int, 1); |
1214 | if (!rfds) | |
1215 | return -ENOMEM; | |
1216 | rfds[0] = s->socket_fd; | |
57020a3a | 1217 | |
8dd4c05b LP |
1218 | rfd_names = strv_new("connection", NULL); |
1219 | if (!rfd_names) | |
1220 | return -ENOMEM; | |
44d8db9e | 1221 | |
4c47affc | 1222 | rn_socket_fds = 1; |
8dd4c05b LP |
1223 | } else { |
1224 | Iterator i; | |
eef85c4a | 1225 | void *v; |
8dd4c05b | 1226 | Unit *u; |
44d8db9e | 1227 | |
8dd4c05b | 1228 | /* Pass all our configured sockets for singleton services */ |
44d8db9e | 1229 | |
eef85c4a | 1230 | HASHMAP_FOREACH_KEY(v, u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) { |
8dd4c05b LP |
1231 | _cleanup_free_ int *cfds = NULL; |
1232 | Socket *sock; | |
1233 | int cn_fds; | |
44d8db9e | 1234 | |
8dd4c05b LP |
1235 | if (u->type != UNIT_SOCKET) |
1236 | continue; | |
44d8db9e | 1237 | |
8dd4c05b | 1238 | sock = SOCKET(u); |
a354329f | 1239 | |
8dd4c05b LP |
1240 | cn_fds = socket_collect_fds(sock, &cfds); |
1241 | if (cn_fds < 0) | |
1242 | return cn_fds; | |
44d8db9e | 1243 | |
8dd4c05b LP |
1244 | if (cn_fds <= 0) |
1245 | continue; | |
79c7626d | 1246 | |
8dd4c05b | 1247 | if (!rfds) { |
1cc6c93a | 1248 | rfds = TAKE_PTR(cfds); |
4c47affc | 1249 | rn_socket_fds = cn_fds; |
8dd4c05b LP |
1250 | } else { |
1251 | int *t; | |
1252 | ||
62d74c78 | 1253 | t = reallocarray(rfds, rn_socket_fds + cn_fds, sizeof(int)); |
8dd4c05b LP |
1254 | if (!t) |
1255 | return -ENOMEM; | |
1256 | ||
4c47affc | 1257 | memcpy(t + rn_socket_fds, cfds, cn_fds * sizeof(int)); |
8dd4c05b LP |
1258 | |
1259 | rfds = t; | |
4c47affc | 1260 | rn_socket_fds += cn_fds; |
8dd4c05b LP |
1261 | } |
1262 | ||
1263 | r = strv_extend_n(&rfd_names, socket_fdname(sock), cn_fds); | |
1264 | if (r < 0) | |
1265 | return r; | |
44d8db9e LP |
1266 | } |
1267 | } | |
1268 | ||
a354329f LP |
1269 | if (s->n_fd_store > 0) { |
1270 | ServiceFDStore *fs; | |
25b583d7 | 1271 | size_t n_fds; |
8dd4c05b | 1272 | char **nl; |
a354329f LP |
1273 | int *t; |
1274 | ||
62d74c78 | 1275 | t = reallocarray(rfds, rn_socket_fds + s->n_fd_store, sizeof(int)); |
a354329f LP |
1276 | if (!t) |
1277 | return -ENOMEM; | |
1278 | ||
1279 | rfds = t; | |
8dd4c05b | 1280 | |
62d74c78 | 1281 | nl = reallocarray(rfd_names, rn_socket_fds + s->n_fd_store + 1, sizeof(char *)); |
8dd4c05b LP |
1282 | if (!nl) |
1283 | return -ENOMEM; | |
1284 | ||
1285 | rfd_names = nl; | |
4c47affc | 1286 | n_fds = rn_socket_fds; |
8dd4c05b LP |
1287 | |
1288 | LIST_FOREACH(fd_store, fs, s->fd_store) { | |
4c47affc FB |
1289 | rfds[n_fds] = fs->fd; |
1290 | rfd_names[n_fds] = strdup(strempty(fs->fdname)); | |
1291 | if (!rfd_names[n_fds]) | |
8dd4c05b LP |
1292 | return -ENOMEM; |
1293 | ||
4c47affc FB |
1294 | rn_storage_fds++; |
1295 | n_fds++; | |
8dd4c05b LP |
1296 | } |
1297 | ||
4c47affc | 1298 | rfd_names[n_fds] = NULL; |
a354329f LP |
1299 | } |
1300 | ||
1cc6c93a YW |
1301 | *fds = TAKE_PTR(rfds); |
1302 | *fd_names = TAKE_PTR(rfd_names); | |
9b141911 | 1303 | *n_socket_fds = rn_socket_fds; |
4c47affc | 1304 | *n_storage_fds = rn_storage_fds; |
3e33402a | 1305 | |
4c47affc | 1306 | return 0; |
44d8db9e LP |
1307 | } |
1308 | ||
5686391b LP |
1309 | static int service_allocate_exec_fd_event_source( |
1310 | Service *s, | |
1311 | int fd, | |
1312 | sd_event_source **ret_event_source) { | |
1313 | ||
1314 | _cleanup_(sd_event_source_unrefp) sd_event_source *source = NULL; | |
1315 | int r; | |
1316 | ||
1317 | assert(s); | |
1318 | assert(fd >= 0); | |
1319 | assert(ret_event_source); | |
1320 | ||
1321 | r = sd_event_add_io(UNIT(s)->manager->event, &source, fd, 0, service_dispatch_exec_io, s); | |
1322 | if (r < 0) | |
1323 | return log_unit_error_errno(UNIT(s), r, "Failed to allocate exec_fd event source: %m"); | |
1324 | ||
1325 | /* This is a bit lower priority than SIGCHLD, as that carries a lot more interesting failure information */ | |
1326 | ||
1327 | r = sd_event_source_set_priority(source, SD_EVENT_PRIORITY_NORMAL-3); | |
1328 | if (r < 0) | |
1329 | return log_unit_error_errno(UNIT(s), r, "Failed to adjust priority of exec_fd event source: %m"); | |
1330 | ||
1331 | (void) sd_event_source_set_description(source, "service event_fd"); | |
1332 | ||
1333 | r = sd_event_source_set_io_fd_own(source, true); | |
1334 | if (r < 0) | |
1335 | return log_unit_error_errno(UNIT(s), r, "Failed to pass ownership of fd to event source: %m"); | |
1336 | ||
1337 | *ret_event_source = TAKE_PTR(source); | |
1338 | return 0; | |
1339 | } | |
1340 | ||
1341 | static int service_allocate_exec_fd( | |
1342 | Service *s, | |
1343 | sd_event_source **ret_event_source, | |
1344 | int* ret_exec_fd) { | |
1345 | ||
1346 | _cleanup_close_pair_ int p[2] = { -1, -1 }; | |
1347 | int r; | |
1348 | ||
1349 | assert(s); | |
1350 | assert(ret_event_source); | |
1351 | assert(ret_exec_fd); | |
1352 | ||
1353 | if (pipe2(p, O_CLOEXEC|O_NONBLOCK) < 0) | |
1354 | return log_unit_error_errno(UNIT(s), errno, "Failed to allocate exec_fd pipe: %m"); | |
1355 | ||
1356 | r = service_allocate_exec_fd_event_source(s, p[0], ret_event_source); | |
1357 | if (r < 0) | |
1358 | return r; | |
1359 | ||
1360 | p[0] = -1; | |
1361 | *ret_exec_fd = TAKE_FD(p[1]); | |
1362 | ||
1363 | return 0; | |
1364 | } | |
1365 | ||
6375bd20 JW |
1366 | static bool service_exec_needs_notify_socket(Service *s, ExecFlags flags) { |
1367 | assert(s); | |
1368 | ||
1369 | /* Notifications are accepted depending on the process and | |
1370 | * the access setting of the service: | |
1371 | * process: \ access: NONE MAIN EXEC ALL | |
1372 | * main no yes yes yes | |
1373 | * control no no yes yes | |
1374 | * other (forked) no no no yes */ | |
1375 | ||
1376 | if (flags & EXEC_IS_CONTROL) | |
1377 | /* A control process */ | |
1378 | return IN_SET(s->notify_access, NOTIFY_EXEC, NOTIFY_ALL); | |
1379 | ||
1380 | /* We only spawn main processes and control processes, so any | |
1381 | * process that is not a control process is a main process */ | |
1382 | return s->notify_access != NOTIFY_NONE; | |
1383 | } | |
1384 | ||
81a2b7ce LP |
1385 | static int service_spawn( |
1386 | Service *s, | |
1387 | ExecCommand *c, | |
21b2ce39 | 1388 | usec_t timeout, |
c39f1ce2 | 1389 | ExecFlags flags, |
81a2b7ce LP |
1390 | pid_t *_pid) { |
1391 | ||
9fa95f85 | 1392 | ExecParameters exec_params = { |
c39f1ce2 LP |
1393 | .flags = flags, |
1394 | .stdin_fd = -1, | |
1395 | .stdout_fd = -1, | |
1396 | .stderr_fd = -1, | |
25b583d7 | 1397 | .exec_fd = -1, |
9fa95f85 | 1398 | }; |
3c7416b6 | 1399 | _cleanup_strv_free_ char **final_env = NULL, **our_env = NULL, **fd_names = NULL; |
5686391b | 1400 | _cleanup_(sd_event_source_unrefp) sd_event_source *exec_fd_source = NULL; |
25b583d7 | 1401 | size_t n_socket_fds = 0, n_storage_fds = 0, n_env = 0; |
5686391b | 1402 | _cleanup_close_ int exec_fd = -1; |
3c7416b6 LP |
1403 | _cleanup_free_ int *fds = NULL; |
1404 | pid_t pid; | |
8dd4c05b LP |
1405 | int r; |
1406 | ||
034c6ed7 LP |
1407 | assert(s); |
1408 | assert(c); | |
1409 | assert(_pid); | |
1410 | ||
3c7416b6 LP |
1411 | r = unit_prepare_exec(UNIT(s)); |
1412 | if (r < 0) | |
1413 | return r; | |
1414 | ||
9c1a61ad LP |
1415 | if (flags & EXEC_IS_CONTROL) { |
1416 | /* If this is a control process, mask the permissions/chroot application if this is requested. */ | |
1417 | if (s->permissions_start_only) | |
1703fa41 | 1418 | exec_params.flags &= ~EXEC_APPLY_SANDBOXING; |
9c1a61ad LP |
1419 | if (s->root_directory_start_only) |
1420 | exec_params.flags &= ~EXEC_APPLY_CHROOT; | |
1421 | } | |
1422 | ||
c39f1ce2 | 1423 | if ((flags & EXEC_PASS_FDS) || |
6cf6bbc2 LP |
1424 | s->exec_context.std_input == EXEC_INPUT_SOCKET || |
1425 | s->exec_context.std_output == EXEC_OUTPUT_SOCKET || | |
1426 | s->exec_context.std_error == EXEC_OUTPUT_SOCKET) { | |
1427 | ||
25b583d7 | 1428 | r = service_collect_fds(s, &fds, &fd_names, &n_socket_fds, &n_storage_fds); |
8dd4c05b | 1429 | if (r < 0) |
36c16a7c | 1430 | return r; |
6cf6bbc2 | 1431 | |
25b583d7 | 1432 | log_unit_debug(UNIT(s), "Passing %zu fds to service", n_socket_fds + n_storage_fds); |
4f2d528d | 1433 | } |
44d8db9e | 1434 | |
5686391b LP |
1435 | if (!FLAGS_SET(flags, EXEC_IS_CONTROL) && s->type == SERVICE_EXEC) { |
1436 | assert(!s->exec_fd_event_source); | |
1437 | ||
1438 | r = service_allocate_exec_fd(s, &exec_fd_source, &exec_fd); | |
1439 | if (r < 0) | |
1440 | return r; | |
1441 | } | |
1442 | ||
36c16a7c LP |
1443 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), timeout)); |
1444 | if (r < 0) | |
1445 | return r; | |
034c6ed7 | 1446 | |
136dc4c4 | 1447 | our_env = new0(char*, 9); |
36c16a7c LP |
1448 | if (!our_env) |
1449 | return -ENOMEM; | |
c952c6ec | 1450 | |
6375bd20 | 1451 | if (service_exec_needs_notify_socket(s, flags)) |
36c16a7c LP |
1452 | if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) |
1453 | return -ENOMEM; | |
c952c6ec | 1454 | |
2105e76a | 1455 | if (s->main_pid > 0) |
36c16a7c LP |
1456 | if (asprintf(our_env + n_env++, "MAINPID="PID_FMT, s->main_pid) < 0) |
1457 | return -ENOMEM; | |
2105e76a | 1458 | |
c39f1ce2 | 1459 | if (MANAGER_IS_USER(UNIT(s)->manager)) |
df0ff127 | 1460 | if (asprintf(our_env + n_env++, "MANAGERPID="PID_FMT, getpid_cached()) < 0) |
36c16a7c | 1461 | return -ENOMEM; |
97ae63e2 | 1462 | |
8dd4c05b | 1463 | if (s->socket_fd >= 0) { |
3b1c5241 SL |
1464 | union sockaddr_union sa; |
1465 | socklen_t salen = sizeof(sa); | |
1466 | ||
f56e7bfe LP |
1467 | /* If this is a per-connection service instance, let's set $REMOTE_ADDR and $REMOTE_PORT to something |
1468 | * useful. Note that we do this only when we are still connected at this point in time, which we might | |
1469 | * very well not be. Hence we ignore all errors when retrieving peer information (as that might result | |
1470 | * in ENOTCONN), and just use whate we can use. */ | |
f2dbd059 | 1471 | |
f56e7bfe LP |
1472 | if (getpeername(s->socket_fd, &sa.sa, &salen) >= 0 && |
1473 | IN_SET(sa.sa.sa_family, AF_INET, AF_INET6, AF_VSOCK)) { | |
3b1c5241 | 1474 | |
3b1c5241 SL |
1475 | _cleanup_free_ char *addr = NULL; |
1476 | char *t; | |
882ac6e7 | 1477 | unsigned port; |
3b1c5241 SL |
1478 | |
1479 | r = sockaddr_pretty(&sa.sa, salen, true, false, &addr); | |
1480 | if (r < 0) | |
36c16a7c | 1481 | return r; |
3b1c5241 SL |
1482 | |
1483 | t = strappend("REMOTE_ADDR=", addr); | |
36c16a7c LP |
1484 | if (!t) |
1485 | return -ENOMEM; | |
3b1c5241 SL |
1486 | our_env[n_env++] = t; |
1487 | ||
882ac6e7 SH |
1488 | r = sockaddr_port(&sa.sa, &port); |
1489 | if (r < 0) | |
1490 | return r; | |
3b1c5241 | 1491 | |
36c16a7c LP |
1492 | if (asprintf(&t, "REMOTE_PORT=%u", port) < 0) |
1493 | return -ENOMEM; | |
3b1c5241 SL |
1494 | our_env[n_env++] = t; |
1495 | } | |
1496 | } | |
1497 | ||
136dc4c4 LP |
1498 | if (flags & EXEC_SETENV_RESULT) { |
1499 | if (asprintf(our_env + n_env++, "SERVICE_RESULT=%s", service_result_to_string(s->result)) < 0) | |
1500 | return -ENOMEM; | |
1501 | ||
1502 | if (s->main_exec_status.pid > 0 && | |
1503 | dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) { | |
1504 | if (asprintf(our_env + n_env++, "EXIT_CODE=%s", sigchld_code_to_string(s->main_exec_status.code)) < 0) | |
1505 | return -ENOMEM; | |
1506 | ||
1507 | if (s->main_exec_status.code == CLD_EXITED) | |
1508 | r = asprintf(our_env + n_env++, "EXIT_STATUS=%i", s->main_exec_status.status); | |
1509 | else | |
1510 | r = asprintf(our_env + n_env++, "EXIT_STATUS=%s", signal_to_string(s->main_exec_status.status)); | |
1511 | if (r < 0) | |
1512 | return -ENOMEM; | |
1513 | } | |
1514 | } | |
1515 | ||
f0d47797 | 1516 | unit_set_exec_params(UNIT(s), &exec_params); |
3536f49e YW |
1517 | |
1518 | final_env = strv_env_merge(2, exec_params.environment, our_env, NULL); | |
36c16a7c LP |
1519 | if (!final_env) |
1520 | return -ENOMEM; | |
c952c6ec | 1521 | |
5bf7569c LP |
1522 | /* System services should get a new keyring by default. */ |
1523 | SET_FLAG(exec_params.flags, EXEC_NEW_KEYRING, MANAGER_IS_SYSTEM(UNIT(s)->manager)); | |
ac647978 LP |
1524 | |
1525 | /* System D-Bus needs nss-systemd disabled, so that we don't deadlock */ | |
1526 | SET_FLAG(exec_params.flags, EXEC_NSS_BYPASS_BUS, | |
1527 | MANAGER_IS_SYSTEM(UNIT(s)->manager) && unit_has_name(UNIT(s), SPECIAL_DBUS_SERVICE)); | |
4ad49000 | 1528 | |
c39f1ce2 | 1529 | exec_params.environment = final_env; |
9fa95f85 | 1530 | exec_params.fds = fds; |
8dd4c05b | 1531 | exec_params.fd_names = fd_names; |
9b141911 | 1532 | exec_params.n_socket_fds = n_socket_fds; |
25b583d7 | 1533 | exec_params.n_storage_fds = n_storage_fds; |
9fa95f85 | 1534 | exec_params.watchdog_usec = s->watchdog_usec; |
a34ceba6 | 1535 | exec_params.selinux_context_net = s->socket_fd_selinux_context_net; |
9fa95f85 DM |
1536 | if (s->type == SERVICE_IDLE) |
1537 | exec_params.idle_pipe = UNIT(s)->manager->idle_pipe; | |
a34ceba6 LP |
1538 | exec_params.stdin_fd = s->stdin_fd; |
1539 | exec_params.stdout_fd = s->stdout_fd; | |
1540 | exec_params.stderr_fd = s->stderr_fd; | |
5686391b | 1541 | exec_params.exec_fd = exec_fd; |
9fa95f85 | 1542 | |
f2341e0a LP |
1543 | r = exec_spawn(UNIT(s), |
1544 | c, | |
9e2f7c11 | 1545 | &s->exec_context, |
9fa95f85 | 1546 | &exec_params, |
613b411c | 1547 | s->exec_runtime, |
29206d46 | 1548 | &s->dynamic_creds, |
9e2f7c11 | 1549 | &pid); |
9e2f7c11 | 1550 | if (r < 0) |
36c16a7c | 1551 | return r; |
034c6ed7 | 1552 | |
5686391b LP |
1553 | s->exec_fd_event_source = TAKE_PTR(exec_fd_source); |
1554 | s->exec_fd_hot = false; | |
1555 | ||
117dcc57 | 1556 | r = unit_watch_pid(UNIT(s), pid); |
e8b509d3 | 1557 | if (r < 0) /* FIXME: we need to do something here */ |
36c16a7c | 1558 | return r; |
034c6ed7 LP |
1559 | |
1560 | *_pid = pid; | |
1561 | ||
5cb5a6ff | 1562 | return 0; |
034c6ed7 LP |
1563 | } |
1564 | ||
80876c20 LP |
1565 | static int main_pid_good(Service *s) { |
1566 | assert(s); | |
1567 | ||
51894d70 | 1568 | /* Returns 0 if the pid is dead, > 0 if it is good, < 0 if we don't know */ |
80876c20 | 1569 | |
fc08079e | 1570 | /* If we know the pid file, then let's just check if it is |
80876c20 | 1571 | * still valid */ |
6dfa5494 LP |
1572 | if (s->main_pid_known) { |
1573 | ||
1574 | /* If it's an alien child let's check if it is still | |
1575 | * alive ... */ | |
62220cf7 | 1576 | if (s->main_pid_alien && s->main_pid > 0) |
9f5650ae | 1577 | return pid_is_alive(s->main_pid); |
6dfa5494 LP |
1578 | |
1579 | /* .. otherwise assume we'll get a SIGCHLD for it, | |
1580 | * which we really should wait for to collect exit | |
1581 | * status and code */ | |
80876c20 | 1582 | return s->main_pid > 0; |
6dfa5494 | 1583 | } |
80876c20 LP |
1584 | |
1585 | /* We don't know the pid */ | |
1586 | return -EAGAIN; | |
1587 | } | |
1588 | ||
019be286 | 1589 | static int control_pid_good(Service *s) { |
80876c20 LP |
1590 | assert(s); |
1591 | ||
07697d7e LP |
1592 | /* Returns 0 if the control PID is dead, > 0 if it is good. We never actually return < 0 here, but in order to |
1593 | * make this function as similar as possible to main_pid_good() and cgroup_good(), we pretend that < 0 also | |
1594 | * means: we can't figure it out. */ | |
1595 | ||
80876c20 LP |
1596 | return s->control_pid > 0; |
1597 | } | |
1598 | ||
1599 | static int cgroup_good(Service *s) { | |
1600 | int r; | |
1601 | ||
1602 | assert(s); | |
1603 | ||
07697d7e LP |
1604 | /* Returns 0 if the cgroup is empty or doesn't exist, > 0 if it is exists and is populated, < 0 if we can't |
1605 | * figure it out */ | |
1606 | ||
4ad49000 LP |
1607 | if (!UNIT(s)->cgroup_path) |
1608 | return 0; | |
1609 | ||
6f883237 | 1610 | r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, UNIT(s)->cgroup_path); |
117dcc57 | 1611 | if (r < 0) |
80876c20 LP |
1612 | return r; |
1613 | ||
b13ddbbc | 1614 | return r == 0; |
80876c20 LP |
1615 | } |
1616 | ||
a509f0e6 LP |
1617 | static bool service_shall_restart(Service *s) { |
1618 | assert(s); | |
1619 | ||
1620 | /* Don't restart after manual stops */ | |
1621 | if (s->forbid_restart) | |
1622 | return false; | |
1623 | ||
1624 | /* Never restart if this is configured as special exception */ | |
1625 | if (exit_status_set_test(&s->restart_prevent_status, s->main_exec_status.code, s->main_exec_status.status)) | |
1626 | return false; | |
1627 | ||
1628 | /* Restart if the exit code/status are configured as restart triggers */ | |
1629 | if (exit_status_set_test(&s->restart_force_status, s->main_exec_status.code, s->main_exec_status.status)) | |
1630 | return true; | |
1631 | ||
1632 | switch (s->restart) { | |
1633 | ||
1634 | case SERVICE_RESTART_NO: | |
1635 | return false; | |
1636 | ||
1637 | case SERVICE_RESTART_ALWAYS: | |
1638 | return true; | |
1639 | ||
1640 | case SERVICE_RESTART_ON_SUCCESS: | |
1641 | return s->result == SERVICE_SUCCESS; | |
1642 | ||
1643 | case SERVICE_RESTART_ON_FAILURE: | |
1644 | return s->result != SERVICE_SUCCESS; | |
1645 | ||
1646 | case SERVICE_RESTART_ON_ABNORMAL: | |
1647 | return !IN_SET(s->result, SERVICE_SUCCESS, SERVICE_FAILURE_EXIT_CODE); | |
1648 | ||
1649 | case SERVICE_RESTART_ON_WATCHDOG: | |
1650 | return s->result == SERVICE_FAILURE_WATCHDOG; | |
1651 | ||
1652 | case SERVICE_RESTART_ON_ABORT: | |
1653 | return IN_SET(s->result, SERVICE_FAILURE_SIGNAL, SERVICE_FAILURE_CORE_DUMP); | |
1654 | ||
1655 | default: | |
1656 | assert_not_reached("unknown restart setting"); | |
1657 | } | |
1658 | } | |
1659 | ||
deb4e708 MK |
1660 | static bool service_will_restart(Unit *u) { |
1661 | Service *s = SERVICE(u); | |
1662 | ||
53f47dfc YW |
1663 | assert(s); |
1664 | ||
deb4e708 MK |
1665 | if (s->will_auto_restart) |
1666 | return true; | |
53f47dfc YW |
1667 | if (s->state == SERVICE_AUTO_RESTART) |
1668 | return true; | |
1669 | if (!UNIT(s)->job) | |
1670 | return false; | |
1671 | if (UNIT(s)->job->type == JOB_START) | |
1672 | return true; | |
2ad2e41a | 1673 | |
53f47dfc YW |
1674 | return false; |
1675 | } | |
1676 | ||
f42806df | 1677 | static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) { |
034c6ed7 | 1678 | int r; |
0f52f8e5 | 1679 | |
034c6ed7 LP |
1680 | assert(s); |
1681 | ||
0f52f8e5 LP |
1682 | /* If there's a stop job queued before we enter the DEAD state, we shouldn't act on Restart=, in order to not |
1683 | * undo what has already been enqueued. */ | |
1684 | if (unit_stop_pending(UNIT(s))) | |
1685 | allow_restart = false; | |
1686 | ||
a0fef983 | 1687 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1688 | s->result = f; |
034c6ed7 | 1689 | |
ed77d407 LP |
1690 | if (s->result != SERVICE_SUCCESS) |
1691 | log_unit_warning(UNIT(s), "Failed with result '%s'.", service_result_to_string(s->result)); | |
1692 | ||
deb4e708 MK |
1693 | if (allow_restart && service_shall_restart(s)) |
1694 | s->will_auto_restart = true; | |
1695 | ||
7eb2a8a1 LP |
1696 | /* Make sure service_release_resources() doesn't destroy our FD store, while we are changing through |
1697 | * SERVICE_FAILED/SERVICE_DEAD before entering into SERVICE_AUTO_RESTART. */ | |
1698 | s->n_keep_fd_store ++; | |
1699 | ||
0c7f15b3 MS |
1700 | service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD); |
1701 | ||
deb4e708 MK |
1702 | if (s->will_auto_restart) { |
1703 | s->will_auto_restart = false; | |
034c6ed7 | 1704 | |
36c16a7c | 1705 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->restart_usec)); |
7eb2a8a1 LP |
1706 | if (r < 0) { |
1707 | s->n_keep_fd_store--; | |
034c6ed7 | 1708 | goto fail; |
7eb2a8a1 | 1709 | } |
034c6ed7 LP |
1710 | |
1711 | service_set_state(s, SERVICE_AUTO_RESTART); | |
7a0019d3 LP |
1712 | } else |
1713 | /* If we shan't restart, then flush out the restart counter. But don't do that immediately, so that the | |
1714 | * user can still introspect the counter. Do so on the next start. */ | |
1715 | s->flush_n_restarts = true; | |
034c6ed7 | 1716 | |
7eb2a8a1 LP |
1717 | /* The new state is in effect, let's decrease the fd store ref counter again. Let's also readd us to the GC |
1718 | * queue, so that the fd store is possibly gc'ed again */ | |
1719 | s->n_keep_fd_store--; | |
1720 | unit_add_to_gc_queue(UNIT(s)); | |
1721 | ||
f2341e0a | 1722 | /* The next restart might not be a manual stop, hence reset the flag indicating manual stops */ |
47342320 LP |
1723 | s->forbid_restart = false; |
1724 | ||
e66cf1a3 | 1725 | /* We want fresh tmpdirs in case service is started again immediately */ |
e8a565cb | 1726 | s->exec_runtime = exec_runtime_unref(s->exec_runtime, true); |
c17ec25e | 1727 | |
53f47dfc | 1728 | if (s->exec_context.runtime_directory_preserve_mode == EXEC_PRESERVE_NO || |
deb4e708 | 1729 | (s->exec_context.runtime_directory_preserve_mode == EXEC_PRESERVE_RESTART && !service_will_restart(UNIT(s)))) |
53f47dfc | 1730 | /* Also, remove the runtime directory */ |
3536f49e | 1731 | exec_context_destroy_runtime_directory(&s->exec_context, UNIT(s)->manager->prefix[EXEC_DIRECTORY_RUNTIME]); |
e66cf1a3 | 1732 | |
00d9ef85 LP |
1733 | /* Get rid of the IPC bits of the user */ |
1734 | unit_unref_uid_gid(UNIT(s), true); | |
1735 | ||
29206d46 LP |
1736 | /* Release the user, and destroy it if we are the only remaining owner */ |
1737 | dynamic_creds_destroy(&s->dynamic_creds); | |
1738 | ||
9285c9ff LN |
1739 | /* Try to delete the pid file. At this point it will be |
1740 | * out-of-date, and some software might be confused by it, so | |
1741 | * let's remove it. */ | |
1742 | if (s->pid_file) | |
fabab190 | 1743 | (void) unlink(s->pid_file); |
9285c9ff | 1744 | |
034c6ed7 LP |
1745 | return; |
1746 | ||
1747 | fail: | |
f2341e0a | 1748 | log_unit_warning_errno(UNIT(s), r, "Failed to run install restart timer: %m"); |
f42806df | 1749 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); |
034c6ed7 LP |
1750 | } |
1751 | ||
f42806df | 1752 | static void service_enter_stop_post(Service *s, ServiceResult f) { |
034c6ed7 LP |
1753 | int r; |
1754 | assert(s); | |
1755 | ||
a0fef983 | 1756 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1757 | s->result = f; |
034c6ed7 | 1758 | |
5e94833f | 1759 | service_unwatch_control_pid(s); |
50be4f4a | 1760 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
5e94833f | 1761 | |
117dcc57 ZJS |
1762 | s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST]; |
1763 | if (s->control_command) { | |
867b3b7d LP |
1764 | s->control_command_id = SERVICE_EXEC_STOP_POST; |
1765 | ||
ecedd90f LP |
1766 | r = service_spawn(s, |
1767 | s->control_command, | |
21b2ce39 | 1768 | s->timeout_stop_usec, |
1703fa41 | 1769 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_IS_CONTROL|EXEC_SETENV_RESULT, |
ecedd90f LP |
1770 | &s->control_pid); |
1771 | if (r < 0) | |
034c6ed7 LP |
1772 | goto fail; |
1773 | ||
80876c20 LP |
1774 | service_set_state(s, SERVICE_STOP_POST); |
1775 | } else | |
ac84d1fb | 1776 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
1777 | |
1778 | return; | |
1779 | ||
1780 | fail: | |
f2341e0a | 1781 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop-post' task: %m"); |
f42806df | 1782 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1783 | } |
1784 | ||
4940c0b0 LP |
1785 | static int state_to_kill_operation(ServiceState state) { |
1786 | switch (state) { | |
1787 | ||
c87700a1 AZ |
1788 | case SERVICE_STOP_WATCHDOG: |
1789 | return KILL_WATCHDOG; | |
4940c0b0 LP |
1790 | |
1791 | case SERVICE_STOP_SIGTERM: | |
1792 | case SERVICE_FINAL_SIGTERM: | |
1793 | return KILL_TERMINATE; | |
1794 | ||
1795 | case SERVICE_STOP_SIGKILL: | |
1796 | case SERVICE_FINAL_SIGKILL: | |
1797 | return KILL_KILL; | |
1798 | ||
1799 | default: | |
1800 | return _KILL_OPERATION_INVALID; | |
1801 | } | |
1802 | } | |
1803 | ||
f42806df | 1804 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) { |
034c6ed7 | 1805 | int r; |
034c6ed7 LP |
1806 | |
1807 | assert(s); | |
1808 | ||
a0fef983 | 1809 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1810 | s->result = f; |
034c6ed7 | 1811 | |
50be4f4a LP |
1812 | /* Before sending any signal, make sure we track all members of this cgroup */ |
1813 | (void) unit_watch_all_pids(UNIT(s)); | |
1814 | ||
1815 | /* Also, enqueue a job that we recheck all our PIDs a bit later, given that it's likely some processes have | |
1816 | * died now */ | |
1817 | (void) unit_enqueue_rewatch_pids(UNIT(s)); | |
a911bb9a | 1818 | |
cd2086fe LP |
1819 | r = unit_kill_context( |
1820 | UNIT(s), | |
1821 | &s->kill_context, | |
4940c0b0 | 1822 | state_to_kill_operation(state), |
cd2086fe LP |
1823 | s->main_pid, |
1824 | s->control_pid, | |
1825 | s->main_pid_alien); | |
1826 | if (r < 0) | |
1827 | goto fail; | |
034c6ed7 | 1828 | |
cd2086fe | 1829 | if (r > 0) { |
36c16a7c LP |
1830 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_stop_usec)); |
1831 | if (r < 0) | |
1832 | goto fail; | |
d6ea93e3 | 1833 | |
80876c20 | 1834 | service_set_state(s, state); |
c87700a1 | 1835 | } else if (IN_SET(state, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM) && s->kill_context.send_sigkill) |
ac84d1fb | 1836 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_SUCCESS); |
c87700a1 | 1837 | else if (IN_SET(state, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 1838 | service_enter_stop_post(s, SERVICE_SUCCESS); |
1db0db4b | 1839 | else if (state == SERVICE_FINAL_SIGTERM && s->kill_context.send_sigkill) |
ac84d1fb | 1840 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_SUCCESS); |
80876c20 | 1841 | else |
f42806df | 1842 | service_enter_dead(s, SERVICE_SUCCESS, true); |
034c6ed7 LP |
1843 | |
1844 | return; | |
1845 | ||
1846 | fail: | |
f2341e0a | 1847 | log_unit_warning_errno(UNIT(s), r, "Failed to kill processes: %m"); |
034c6ed7 | 1848 | |
c87700a1 | 1849 | if (IN_SET(state, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 1850 | service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES); |
034c6ed7 | 1851 | else |
f42806df | 1852 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
034c6ed7 LP |
1853 | } |
1854 | ||
308d72dc LP |
1855 | static void service_enter_stop_by_notify(Service *s) { |
1856 | assert(s); | |
1857 | ||
50be4f4a | 1858 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
308d72dc | 1859 | |
36c16a7c | 1860 | service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_stop_usec)); |
308d72dc | 1861 | |
6041a7ee MS |
1862 | /* The service told us it's stopping, so it's as if we SIGTERM'd it. */ |
1863 | service_set_state(s, SERVICE_STOP_SIGTERM); | |
308d72dc LP |
1864 | } |
1865 | ||
f42806df | 1866 | static void service_enter_stop(Service *s, ServiceResult f) { |
034c6ed7 | 1867 | int r; |
5925dd3c | 1868 | |
034c6ed7 LP |
1869 | assert(s); |
1870 | ||
a0fef983 | 1871 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1872 | s->result = f; |
034c6ed7 | 1873 | |
5e94833f | 1874 | service_unwatch_control_pid(s); |
50be4f4a | 1875 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
5e94833f | 1876 | |
117dcc57 ZJS |
1877 | s->control_command = s->exec_command[SERVICE_EXEC_STOP]; |
1878 | if (s->control_command) { | |
867b3b7d LP |
1879 | s->control_command_id = SERVICE_EXEC_STOP; |
1880 | ||
ecedd90f LP |
1881 | r = service_spawn(s, |
1882 | s->control_command, | |
21b2ce39 | 1883 | s->timeout_stop_usec, |
1703fa41 | 1884 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_SETENV_RESULT, |
ecedd90f LP |
1885 | &s->control_pid); |
1886 | if (r < 0) | |
034c6ed7 LP |
1887 | goto fail; |
1888 | ||
80876c20 LP |
1889 | service_set_state(s, SERVICE_STOP); |
1890 | } else | |
f42806df | 1891 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
1892 | |
1893 | return; | |
1894 | ||
1895 | fail: | |
f2341e0a | 1896 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop' task: %m"); |
f42806df | 1897 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1898 | } |
1899 | ||
957c3cf9 LP |
1900 | static bool service_good(Service *s) { |
1901 | int main_pid_ok; | |
1902 | assert(s); | |
1903 | ||
1904 | if (s->type == SERVICE_DBUS && !s->bus_name_good) | |
1905 | return false; | |
1906 | ||
1907 | main_pid_ok = main_pid_good(s); | |
1908 | if (main_pid_ok > 0) /* It's alive */ | |
1909 | return true; | |
1910 | if (main_pid_ok == 0) /* It's dead */ | |
1911 | return false; | |
1912 | ||
1913 | /* OK, we don't know anything about the main PID, maybe | |
1914 | * because there is none. Let's check the control group | |
1915 | * instead. */ | |
1916 | ||
1917 | return cgroup_good(s) != 0; | |
1918 | } | |
1919 | ||
f42806df | 1920 | static void service_enter_running(Service *s, ServiceResult f) { |
80876c20 LP |
1921 | assert(s); |
1922 | ||
a0fef983 | 1923 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1924 | s->result = f; |
80876c20 | 1925 | |
089b64d5 LP |
1926 | service_unwatch_control_pid(s); |
1927 | ||
ec5b1452 LP |
1928 | if (s->result != SERVICE_SUCCESS) |
1929 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); | |
1930 | else if (service_good(s)) { | |
308d72dc | 1931 | |
ec5b1452 | 1932 | /* If there are any queued up sd_notify() notifications, process them now */ |
308d72dc LP |
1933 | if (s->notify_state == NOTIFY_RELOADING) |
1934 | service_enter_reload_by_notify(s); | |
1935 | else if (s->notify_state == NOTIFY_STOPPING) | |
1936 | service_enter_stop_by_notify(s); | |
36c16a7c | 1937 | else { |
308d72dc | 1938 | service_set_state(s, SERVICE_RUNNING); |
36c16a7c LP |
1939 | service_arm_timer(s, usec_add(UNIT(s)->active_enter_timestamp.monotonic, s->runtime_max_usec)); |
1940 | } | |
308d72dc | 1941 | |
ec5b1452 | 1942 | } else if (s->remain_after_exit) |
80876c20 LP |
1943 | service_set_state(s, SERVICE_EXITED); |
1944 | else | |
f42806df | 1945 | service_enter_stop(s, SERVICE_SUCCESS); |
80876c20 LP |
1946 | } |
1947 | ||
034c6ed7 LP |
1948 | static void service_enter_start_post(Service *s) { |
1949 | int r; | |
1950 | assert(s); | |
1951 | ||
5e94833f | 1952 | service_unwatch_control_pid(s); |
842129f5 | 1953 | service_reset_watchdog(s); |
bb242b7b | 1954 | |
117dcc57 ZJS |
1955 | s->control_command = s->exec_command[SERVICE_EXEC_START_POST]; |
1956 | if (s->control_command) { | |
867b3b7d LP |
1957 | s->control_command_id = SERVICE_EXEC_START_POST; |
1958 | ||
ecedd90f LP |
1959 | r = service_spawn(s, |
1960 | s->control_command, | |
21b2ce39 | 1961 | s->timeout_start_usec, |
1703fa41 | 1962 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL, |
ecedd90f LP |
1963 | &s->control_pid); |
1964 | if (r < 0) | |
034c6ed7 LP |
1965 | goto fail; |
1966 | ||
80876c20 LP |
1967 | service_set_state(s, SERVICE_START_POST); |
1968 | } else | |
f42806df | 1969 | service_enter_running(s, SERVICE_SUCCESS); |
034c6ed7 LP |
1970 | |
1971 | return; | |
1972 | ||
1973 | fail: | |
f2341e0a | 1974 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-post' task: %m"); |
f42806df | 1975 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1976 | } |
1977 | ||
e9a4f676 | 1978 | static void service_kill_control_process(Service *s) { |
a6951a50 | 1979 | int r; |
4ad49000 | 1980 | |
a6951a50 LP |
1981 | assert(s); |
1982 | ||
e9a4f676 LP |
1983 | if (s->control_pid <= 0) |
1984 | return; | |
4ad49000 | 1985 | |
e9a4f676 LP |
1986 | r = kill_and_sigcont(s->control_pid, SIGKILL); |
1987 | if (r < 0) { | |
1988 | _cleanup_free_ char *comm = NULL; | |
a6951a50 | 1989 | |
e9a4f676 | 1990 | (void) get_process_comm(s->control_pid, &comm); |
a6951a50 | 1991 | |
e9a4f676 LP |
1992 | log_unit_debug_errno(UNIT(s), r, "Failed to kill control process " PID_FMT " (%s), ignoring: %m", |
1993 | s->control_pid, strna(comm)); | |
a6951a50 | 1994 | } |
4ad49000 LP |
1995 | } |
1996 | ||
034c6ed7 | 1997 | static void service_enter_start(Service *s) { |
4ad49000 | 1998 | ExecCommand *c; |
36c16a7c | 1999 | usec_t timeout; |
034c6ed7 LP |
2000 | pid_t pid; |
2001 | int r; | |
2002 | ||
2003 | assert(s); | |
2004 | ||
41efeaec LP |
2005 | service_unwatch_control_pid(s); |
2006 | service_unwatch_main_pid(s); | |
80876c20 | 2007 | |
a4634b21 LP |
2008 | unit_warn_leftover_processes(UNIT(s)); |
2009 | ||
867b3b7d LP |
2010 | if (s->type == SERVICE_FORKING) { |
2011 | s->control_command_id = SERVICE_EXEC_START; | |
2012 | c = s->control_command = s->exec_command[SERVICE_EXEC_START]; | |
2013 | ||
2014 | s->main_command = NULL; | |
2015 | } else { | |
2016 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
2017 | s->control_command = NULL; | |
2018 | ||
2019 | c = s->main_command = s->exec_command[SERVICE_EXEC_START]; | |
2020 | } | |
34e9ba66 | 2021 | |
96fb8242 | 2022 | if (!c) { |
47fffb35 LP |
2023 | if (s->type != SERVICE_ONESHOT) { |
2024 | /* There's no command line configured for the main command? Hmm, that is strange. This can only | |
2025 | * happen if the configuration changes at runtime. In this case, let's enter a failure | |
2026 | * state. */ | |
b8b846d7 | 2027 | log_unit_error(UNIT(s), "There's no 'start' task anymore we could start."); |
47fffb35 LP |
2028 | r = -ENXIO; |
2029 | goto fail; | |
2030 | } | |
2031 | ||
ef5ae8e7 ZJS |
2032 | /* We force a fake state transition here. Otherwise, the unit would go directly from |
2033 | * SERVICE_DEAD to SERVICE_DEAD without SERVICE_ACTIVATING or SERVICE_ACTIVE | |
2034 | * inbetween. This way we can later trigger actions that depend on the state | |
2035 | * transition, including SuccessAction=. */ | |
2036 | service_set_state(s, SERVICE_START); | |
2037 | ||
96fb8242 LP |
2038 | service_enter_start_post(s); |
2039 | return; | |
2040 | } | |
2041 | ||
36c16a7c LP |
2042 | if (IN_SET(s->type, SERVICE_SIMPLE, SERVICE_IDLE)) |
2043 | /* For simple + idle this is the main process. We don't apply any timeout here, but | |
2044 | * service_enter_running() will later apply the .runtime_max_usec timeout. */ | |
2045 | timeout = USEC_INFINITY; | |
2046 | else | |
2047 | timeout = s->timeout_start_usec; | |
2048 | ||
ecedd90f LP |
2049 | r = service_spawn(s, |
2050 | c, | |
36c16a7c | 2051 | timeout, |
1703fa41 | 2052 | EXEC_PASS_FDS|EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_SET_WATCHDOG, |
ecedd90f LP |
2053 | &pid); |
2054 | if (r < 0) | |
034c6ed7 LP |
2055 | goto fail; |
2056 | ||
36c16a7c | 2057 | if (IN_SET(s->type, SERVICE_SIMPLE, SERVICE_IDLE)) { |
034c6ed7 LP |
2058 | /* For simple services we immediately start |
2059 | * the START_POST binaries. */ | |
2060 | ||
5925dd3c | 2061 | service_set_main_pid(s, pid); |
034c6ed7 LP |
2062 | service_enter_start_post(s); |
2063 | ||
2064 | } else if (s->type == SERVICE_FORKING) { | |
2065 | ||
2066 | /* For forking services we wait until the start | |
2067 | * process exited. */ | |
2068 | ||
e55224ca | 2069 | s->control_pid = pid; |
80876c20 LP |
2070 | service_set_state(s, SERVICE_START); |
2071 | ||
5686391b | 2072 | } else if (IN_SET(s->type, SERVICE_ONESHOT, SERVICE_DBUS, SERVICE_NOTIFY, SERVICE_EXEC)) { |
7d55e835 | 2073 | |
5686391b | 2074 | /* For oneshot services we wait until the start process exited, too, but it is our main process. */ |
7d55e835 | 2075 | |
5686391b LP |
2076 | /* For D-Bus services we know the main pid right away, but wait for the bus name to appear on the |
2077 | * bus. 'notify' and 'exec' services are similar. */ | |
05e343b7 | 2078 | |
5925dd3c | 2079 | service_set_main_pid(s, pid); |
80876c20 | 2080 | service_set_state(s, SERVICE_START); |
034c6ed7 LP |
2081 | } else |
2082 | assert_not_reached("Unknown service type"); | |
2083 | ||
2084 | return; | |
2085 | ||
2086 | fail: | |
f2341e0a | 2087 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start' task: %m"); |
c3fda31d | 2088 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
2089 | } |
2090 | ||
2091 | static void service_enter_start_pre(Service *s) { | |
2092 | int r; | |
2093 | ||
2094 | assert(s); | |
2095 | ||
5e94833f LP |
2096 | service_unwatch_control_pid(s); |
2097 | ||
117dcc57 ZJS |
2098 | s->control_command = s->exec_command[SERVICE_EXEC_START_PRE]; |
2099 | if (s->control_command) { | |
8f53a7b8 | 2100 | |
a4634b21 LP |
2101 | unit_warn_leftover_processes(UNIT(s)); |
2102 | ||
867b3b7d LP |
2103 | s->control_command_id = SERVICE_EXEC_START_PRE; |
2104 | ||
ecedd90f LP |
2105 | r = service_spawn(s, |
2106 | s->control_command, | |
21b2ce39 | 2107 | s->timeout_start_usec, |
1703fa41 | 2108 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_APPLY_TTY_STDIN, |
ecedd90f LP |
2109 | &s->control_pid); |
2110 | if (r < 0) | |
034c6ed7 LP |
2111 | goto fail; |
2112 | ||
80876c20 LP |
2113 | service_set_state(s, SERVICE_START_PRE); |
2114 | } else | |
034c6ed7 LP |
2115 | service_enter_start(s); |
2116 | ||
2117 | return; | |
2118 | ||
2119 | fail: | |
f2341e0a | 2120 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-pre' task: %m"); |
f42806df | 2121 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
034c6ed7 LP |
2122 | } |
2123 | ||
2124 | static void service_enter_restart(Service *s) { | |
4afd3348 | 2125 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
034c6ed7 | 2126 | int r; |
398ef8ba | 2127 | |
034c6ed7 LP |
2128 | assert(s); |
2129 | ||
a8bb2e65 LP |
2130 | if (UNIT(s)->job && UNIT(s)->job->type == JOB_STOP) { |
2131 | /* Don't restart things if we are going down anyway */ | |
f2341e0a | 2132 | log_unit_info(UNIT(s), "Stop job pending for unit, delaying automatic restart."); |
2edfa366 | 2133 | |
36c16a7c | 2134 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->restart_usec)); |
a8bb2e65 | 2135 | if (r < 0) |
2edfa366 | 2136 | goto fail; |
feae8adb DW |
2137 | |
2138 | return; | |
2edfa366 LP |
2139 | } |
2140 | ||
48bb5876 DW |
2141 | /* Any units that are bound to this service must also be |
2142 | * restarted. We use JOB_RESTART (instead of the more obvious | |
2143 | * JOB_START) here so that those dependency jobs will be added | |
2144 | * as well. */ | |
4bd29fe5 | 2145 | r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_FAIL, &error, NULL); |
48bb5876 | 2146 | if (r < 0) |
034c6ed7 LP |
2147 | goto fail; |
2148 | ||
7a0019d3 LP |
2149 | /* Count the jobs we enqueue for restarting. This counter is maintained as long as the unit isn't fully |
2150 | * stopped, i.e. as long as it remains up or remains in auto-start states. The use can reset the counter | |
2151 | * explicitly however via the usual "systemctl reset-failure" logic. */ | |
2152 | s->n_restarts ++; | |
2153 | s->flush_n_restarts = false; | |
2154 | ||
2155 | log_struct(LOG_INFO, | |
2156 | "MESSAGE_ID=" SD_MESSAGE_UNIT_RESTART_SCHEDULED_STR, | |
2157 | LOG_UNIT_ID(UNIT(s)), | |
f1c50bec | 2158 | LOG_UNIT_INVOCATION_ID(UNIT(s)), |
7a0019d3 | 2159 | LOG_UNIT_MESSAGE(UNIT(s), "Scheduled restart job, restart counter is at %u.", s->n_restarts), |
a1230ff9 | 2160 | "N_RESTARTS=%u", s->n_restarts); |
7a0019d3 LP |
2161 | |
2162 | /* Notify clients about changed restart counter */ | |
2163 | unit_add_to_dbus_queue(UNIT(s)); | |
2164 | ||
a8bb2e65 LP |
2165 | /* Note that we stay in the SERVICE_AUTO_RESTART state here, |
2166 | * it will be canceled as part of the service_stop() call that | |
2167 | * is executed as part of JOB_RESTART. */ | |
2168 | ||
034c6ed7 LP |
2169 | return; |
2170 | ||
2171 | fail: | |
f2341e0a | 2172 | log_unit_warning(UNIT(s), "Failed to schedule restart job: %s", bus_error_message(&error, -r)); |
f42806df | 2173 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); |
034c6ed7 LP |
2174 | } |
2175 | ||
308d72dc | 2176 | static void service_enter_reload_by_notify(Service *s) { |
15d167f8 JW |
2177 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
2178 | int r; | |
2179 | ||
308d72dc LP |
2180 | assert(s); |
2181 | ||
36c16a7c | 2182 | service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_start_usec)); |
308d72dc | 2183 | service_set_state(s, SERVICE_RELOAD); |
15d167f8 JW |
2184 | |
2185 | /* service_enter_reload_by_notify is never called during a reload, thus no loops are possible. */ | |
2186 | r = manager_propagate_reload(UNIT(s)->manager, UNIT(s), JOB_FAIL, &error); | |
2187 | if (r < 0) | |
2188 | log_unit_warning(UNIT(s), "Failed to schedule propagation of reload: %s", bus_error_message(&error, -r)); | |
308d72dc LP |
2189 | } |
2190 | ||
034c6ed7 LP |
2191 | static void service_enter_reload(Service *s) { |
2192 | int r; | |
2193 | ||
2194 | assert(s); | |
2195 | ||
5e94833f | 2196 | service_unwatch_control_pid(s); |
95c906ae | 2197 | s->reload_result = SERVICE_SUCCESS; |
5e94833f | 2198 | |
117dcc57 ZJS |
2199 | s->control_command = s->exec_command[SERVICE_EXEC_RELOAD]; |
2200 | if (s->control_command) { | |
867b3b7d LP |
2201 | s->control_command_id = SERVICE_EXEC_RELOAD; |
2202 | ||
ecedd90f LP |
2203 | r = service_spawn(s, |
2204 | s->control_command, | |
21b2ce39 | 2205 | s->timeout_start_usec, |
1703fa41 | 2206 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL, |
ecedd90f LP |
2207 | &s->control_pid); |
2208 | if (r < 0) | |
034c6ed7 LP |
2209 | goto fail; |
2210 | ||
80876c20 LP |
2211 | service_set_state(s, SERVICE_RELOAD); |
2212 | } else | |
f42806df | 2213 | service_enter_running(s, SERVICE_SUCCESS); |
034c6ed7 LP |
2214 | |
2215 | return; | |
2216 | ||
2217 | fail: | |
f2341e0a | 2218 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'reload' task: %m"); |
f42806df LP |
2219 | s->reload_result = SERVICE_FAILURE_RESOURCES; |
2220 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
2221 | } |
2222 | ||
f42806df | 2223 | static void service_run_next_control(Service *s) { |
36c16a7c | 2224 | usec_t timeout; |
034c6ed7 LP |
2225 | int r; |
2226 | ||
2227 | assert(s); | |
2228 | assert(s->control_command); | |
2229 | assert(s->control_command->command_next); | |
2230 | ||
34e9ba66 | 2231 | assert(s->control_command_id != SERVICE_EXEC_START); |
034c6ed7 | 2232 | |
34e9ba66 | 2233 | s->control_command = s->control_command->command_next; |
5e94833f LP |
2234 | service_unwatch_control_pid(s); |
2235 | ||
36c16a7c LP |
2236 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
2237 | timeout = s->timeout_start_usec; | |
2238 | else | |
2239 | timeout = s->timeout_stop_usec; | |
2240 | ||
ecedd90f LP |
2241 | r = service_spawn(s, |
2242 | s->control_command, | |
36c16a7c | 2243 | timeout, |
1703fa41 | 2244 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL| |
136dc4c4 LP |
2245 | (IN_SET(s->control_command_id, SERVICE_EXEC_START_PRE, SERVICE_EXEC_STOP_POST) ? EXEC_APPLY_TTY_STDIN : 0)| |
2246 | (IN_SET(s->control_command_id, SERVICE_EXEC_STOP, SERVICE_EXEC_STOP_POST) ? EXEC_SETENV_RESULT : 0), | |
ecedd90f LP |
2247 | &s->control_pid); |
2248 | if (r < 0) | |
034c6ed7 LP |
2249 | goto fail; |
2250 | ||
2251 | return; | |
2252 | ||
2253 | fail: | |
f2341e0a | 2254 | log_unit_warning_errno(UNIT(s), r, "Failed to run next control task: %m"); |
034c6ed7 | 2255 | |
4cd9fa81 | 2256 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START_POST, SERVICE_STOP)) |
f42806df | 2257 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 | 2258 | else if (s->state == SERVICE_STOP_POST) |
f42806df | 2259 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
e2f3b44c | 2260 | else if (s->state == SERVICE_RELOAD) { |
f42806df LP |
2261 | s->reload_result = SERVICE_FAILURE_RESOURCES; |
2262 | service_enter_running(s, SERVICE_SUCCESS); | |
e2f3b44c | 2263 | } else |
f42806df | 2264 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
5cb5a6ff LP |
2265 | } |
2266 | ||
f42806df | 2267 | static void service_run_next_main(Service *s) { |
34e9ba66 LP |
2268 | pid_t pid; |
2269 | int r; | |
2270 | ||
2271 | assert(s); | |
867b3b7d LP |
2272 | assert(s->main_command); |
2273 | assert(s->main_command->command_next); | |
2274 | assert(s->type == SERVICE_ONESHOT); | |
34e9ba66 | 2275 | |
867b3b7d | 2276 | s->main_command = s->main_command->command_next; |
34e9ba66 LP |
2277 | service_unwatch_main_pid(s); |
2278 | ||
ecedd90f LP |
2279 | r = service_spawn(s, |
2280 | s->main_command, | |
21b2ce39 | 2281 | s->timeout_start_usec, |
1703fa41 | 2282 | EXEC_PASS_FDS|EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_SET_WATCHDOG, |
ecedd90f LP |
2283 | &pid); |
2284 | if (r < 0) | |
34e9ba66 LP |
2285 | goto fail; |
2286 | ||
2287 | service_set_main_pid(s, pid); | |
2288 | ||
2289 | return; | |
2290 | ||
2291 | fail: | |
f2341e0a | 2292 | log_unit_warning_errno(UNIT(s), r, "Failed to run next main task: %m"); |
f42806df | 2293 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
34e9ba66 LP |
2294 | } |
2295 | ||
87f0e418 LP |
2296 | static int service_start(Unit *u) { |
2297 | Service *s = SERVICE(u); | |
07299350 | 2298 | int r; |
5cb5a6ff LP |
2299 | |
2300 | assert(s); | |
2301 | ||
034c6ed7 LP |
2302 | /* We cannot fulfill this request right now, try again later |
2303 | * please! */ | |
a00973af | 2304 | if (IN_SET(s->state, |
c87700a1 | 2305 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
a00973af | 2306 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) |
5cb5a6ff LP |
2307 | return -EAGAIN; |
2308 | ||
034c6ed7 | 2309 | /* Already on it! */ |
a00973af | 2310 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST)) |
034c6ed7 LP |
2311 | return 0; |
2312 | ||
2e9d6c12 | 2313 | /* A service that will be restarted must be stopped first to |
7f2cddae | 2314 | * trigger BindsTo and/or OnFailure dependencies. If a user |
2e9d6c12 | 2315 | * does not want to wait for the holdoff time to elapse, the |
d4943dc7 LP |
2316 | * service should be manually restarted, not started. We |
2317 | * simply return EAGAIN here, so that any start jobs stay | |
2318 | * queued, and assume that the auto restart timer will | |
2319 | * eventually trigger the restart. */ | |
2320 | if (s->state == SERVICE_AUTO_RESTART) | |
a8bb2e65 | 2321 | return -EAGAIN; |
2e9d6c12 | 2322 | |
a00973af | 2323 | assert(IN_SET(s->state, SERVICE_DEAD, SERVICE_FAILED)); |
5cb5a6ff | 2324 | |
07299350 LP |
2325 | /* Make sure we don't enter a busy loop of some kind. */ |
2326 | r = unit_start_limit_test(u); | |
2327 | if (r < 0) { | |
2328 | service_enter_dead(s, SERVICE_FAILURE_START_LIMIT_HIT, false); | |
2329 | return r; | |
2330 | } | |
2331 | ||
4b58153d LP |
2332 | r = unit_acquire_invocation_id(u); |
2333 | if (r < 0) | |
2334 | return r; | |
2335 | ||
f42806df LP |
2336 | s->result = SERVICE_SUCCESS; |
2337 | s->reload_result = SERVICE_SUCCESS; | |
034c6ed7 | 2338 | s->main_pid_known = false; |
6dfa5494 | 2339 | s->main_pid_alien = false; |
47342320 | 2340 | s->forbid_restart = false; |
3c7416b6 | 2341 | |
a1e58e8e | 2342 | s->status_text = mfree(s->status_text); |
8cfdb077 LP |
2343 | s->status_errno = 0; |
2344 | ||
308d72dc LP |
2345 | s->notify_state = NOTIFY_UNKNOWN; |
2346 | ||
2787d83c M |
2347 | s->watchdog_override_enable = false; |
2348 | s->watchdog_override_usec = 0; | |
2349 | ||
6a1d4d9f LP |
2350 | exec_command_reset_status_list_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); |
2351 | exec_status_reset(&s->main_exec_status); | |
2352 | ||
7a0019d3 LP |
2353 | /* This is not an automatic restart? Flush the restart counter then */ |
2354 | if (s->flush_n_restarts) { | |
2355 | s->n_restarts = 0; | |
2356 | s->flush_n_restarts = false; | |
2357 | } | |
2358 | ||
6a1d4d9f LP |
2359 | u->reset_accounting = true; |
2360 | ||
034c6ed7 | 2361 | service_enter_start_pre(s); |
82a2b6bb | 2362 | return 1; |
5cb5a6ff LP |
2363 | } |
2364 | ||
87f0e418 LP |
2365 | static int service_stop(Unit *u) { |
2366 | Service *s = SERVICE(u); | |
5cb5a6ff LP |
2367 | |
2368 | assert(s); | |
2369 | ||
a509f0e6 | 2370 | /* Don't create restart jobs from manual stops. */ |
47342320 | 2371 | s->forbid_restart = true; |
034c6ed7 | 2372 | |
e537352b | 2373 | /* Already on it */ |
a00973af | 2374 | if (IN_SET(s->state, |
c87700a1 | 2375 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
a00973af | 2376 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) |
e537352b LP |
2377 | return 0; |
2378 | ||
f0c7b229 | 2379 | /* A restart will be scheduled or is in progress. */ |
034c6ed7 | 2380 | if (s->state == SERVICE_AUTO_RESTART) { |
0c7f15b3 | 2381 | service_set_state(s, SERVICE_DEAD); |
034c6ed7 LP |
2382 | return 0; |
2383 | } | |
2384 | ||
3f6c78dc LP |
2385 | /* If there's already something running we go directly into |
2386 | * kill mode. */ | |
a00973af | 2387 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RELOAD)) { |
f42806df | 2388 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
3f6c78dc LP |
2389 | return 0; |
2390 | } | |
5cb5a6ff | 2391 | |
a00973af | 2392 | assert(IN_SET(s->state, SERVICE_RUNNING, SERVICE_EXITED)); |
3a762661 | 2393 | |
f42806df | 2394 | service_enter_stop(s, SERVICE_SUCCESS); |
82a2b6bb | 2395 | return 1; |
5cb5a6ff LP |
2396 | } |
2397 | ||
87f0e418 LP |
2398 | static int service_reload(Unit *u) { |
2399 | Service *s = SERVICE(u); | |
034c6ed7 LP |
2400 | |
2401 | assert(s); | |
2402 | ||
3742095b | 2403 | assert(IN_SET(s->state, SERVICE_RUNNING, SERVICE_EXITED)); |
034c6ed7 LP |
2404 | |
2405 | service_enter_reload(s); | |
2d018ae2 | 2406 | return 1; |
5cb5a6ff LP |
2407 | } |
2408 | ||
44a6b1b6 | 2409 | _pure_ static bool service_can_reload(Unit *u) { |
87f0e418 | 2410 | Service *s = SERVICE(u); |
034c6ed7 LP |
2411 | |
2412 | assert(s); | |
2413 | ||
2414 | return !!s->exec_command[SERVICE_EXEC_RELOAD]; | |
2415 | } | |
2416 | ||
e266c068 MS |
2417 | static unsigned service_exec_command_index(Unit *u, ServiceExecCommand id, ExecCommand *current) { |
2418 | Service *s = SERVICE(u); | |
2419 | unsigned idx = 0; | |
2420 | ExecCommand *first, *c; | |
2421 | ||
2422 | assert(s); | |
2423 | ||
2424 | first = s->exec_command[id]; | |
2425 | ||
2426 | /* Figure out where we are in the list by walking back to the beginning */ | |
2427 | for (c = current; c != first; c = c->command_prev) | |
2428 | idx++; | |
2429 | ||
2430 | return idx; | |
2431 | } | |
2432 | ||
2433 | static int service_serialize_exec_command(Unit *u, FILE *f, ExecCommand *command) { | |
2434 | Service *s = SERVICE(u); | |
2435 | ServiceExecCommand id; | |
2436 | unsigned idx; | |
2437 | const char *type; | |
2438 | char **arg; | |
e266c068 MS |
2439 | _cleanup_free_ char *args = NULL, *p = NULL; |
2440 | size_t allocated = 0, length = 0; | |
2441 | ||
2442 | assert(s); | |
2443 | assert(f); | |
2444 | ||
2445 | if (!command) | |
2446 | return 0; | |
2447 | ||
2448 | if (command == s->control_command) { | |
2449 | type = "control"; | |
2450 | id = s->control_command_id; | |
2451 | } else { | |
2452 | type = "main"; | |
2453 | id = SERVICE_EXEC_START; | |
2454 | } | |
2455 | ||
2456 | idx = service_exec_command_index(u, id, command); | |
2457 | ||
2458 | STRV_FOREACH(arg, command->argv) { | |
2459 | size_t n; | |
2460 | _cleanup_free_ char *e = NULL; | |
2461 | ||
2462 | e = xescape(*arg, WHITESPACE); | |
2463 | if (!e) | |
2464 | return -ENOMEM; | |
2465 | ||
2466 | n = strlen(e); | |
2467 | if (!GREEDY_REALLOC(args, allocated, length + 1 + n + 1)) | |
2468 | return -ENOMEM; | |
2469 | ||
2470 | if (length > 0) | |
2471 | args[length++] = ' '; | |
2472 | ||
2473 | memcpy(args + length, e, n); | |
2474 | length += n; | |
2475 | } | |
2476 | ||
2477 | if (!GREEDY_REALLOC(args, allocated, length + 1)) | |
2478 | return -ENOMEM; | |
2479 | args[length++] = 0; | |
2480 | ||
2481 | p = xescape(command->path, WHITESPACE); | |
2482 | if (!p) | |
2483 | return -ENOMEM; | |
2484 | ||
2485 | fprintf(f, "%s-command=%s %u %s %s\n", type, service_exec_command_to_string(id), idx, p, args); | |
2486 | ||
2487 | return 0; | |
2488 | } | |
2489 | ||
a16e1123 LP |
2490 | static int service_serialize(Unit *u, FILE *f, FDSet *fds) { |
2491 | Service *s = SERVICE(u); | |
2339fc93 | 2492 | ServiceFDStore *fs; |
a34ceba6 | 2493 | int r; |
a16e1123 LP |
2494 | |
2495 | assert(u); | |
2496 | assert(f); | |
2497 | assert(fds); | |
2498 | ||
2499 | unit_serialize_item(u, f, "state", service_state_to_string(s->state)); | |
f42806df LP |
2500 | unit_serialize_item(u, f, "result", service_result_to_string(s->result)); |
2501 | unit_serialize_item(u, f, "reload-result", service_result_to_string(s->reload_result)); | |
a16e1123 LP |
2502 | |
2503 | if (s->control_pid > 0) | |
f06db334 | 2504 | unit_serialize_item_format(u, f, "control-pid", PID_FMT, s->control_pid); |
a16e1123 | 2505 | |
5925dd3c | 2506 | if (s->main_pid_known && s->main_pid > 0) |
ccd06097 | 2507 | unit_serialize_item_format(u, f, "main-pid", PID_FMT, s->main_pid); |
a16e1123 LP |
2508 | |
2509 | unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known)); | |
de1d4f9b | 2510 | unit_serialize_item(u, f, "bus-name-good", yes_no(s->bus_name_good)); |
d8ccf5fd | 2511 | unit_serialize_item(u, f, "bus-name-owner", s->bus_name_owner); |
a16e1123 | 2512 | |
7a0019d3 | 2513 | unit_serialize_item_format(u, f, "n-restarts", "%u", s->n_restarts); |
7f923884 | 2514 | unit_serialize_item(u, f, "flush-n-restarts", yes_no(s->flush_n_restarts)); |
7a0019d3 | 2515 | |
a34ceba6 LP |
2516 | r = unit_serialize_item_escaped(u, f, "status-text", s->status_text); |
2517 | if (r < 0) | |
2518 | return r; | |
3a2776bc | 2519 | |
e266c068 MS |
2520 | service_serialize_exec_command(u, f, s->control_command); |
2521 | service_serialize_exec_command(u, f, s->main_command); | |
a16e1123 | 2522 | |
a34ceba6 LP |
2523 | r = unit_serialize_item_fd(u, f, fds, "stdin-fd", s->stdin_fd); |
2524 | if (r < 0) | |
2525 | return r; | |
2526 | r = unit_serialize_item_fd(u, f, fds, "stdout-fd", s->stdout_fd); | |
2527 | if (r < 0) | |
2528 | return r; | |
2529 | r = unit_serialize_item_fd(u, f, fds, "stderr-fd", s->stderr_fd); | |
2530 | if (r < 0) | |
2531 | return r; | |
e44da745 | 2532 | |
5686391b LP |
2533 | if (s->exec_fd_event_source) { |
2534 | r = unit_serialize_item_fd(u, f, fds, "exec-fd", sd_event_source_get_io_fd(s->exec_fd_event_source)); | |
2535 | if (r < 0) | |
2536 | return r; | |
2537 | unit_serialize_item(u, f, "exec-fd-hot", yes_no(s->exec_fd_hot)); | |
2538 | } | |
2539 | ||
9dfb64f8 ZJS |
2540 | if (UNIT_ISSET(s->accept_socket)) { |
2541 | r = unit_serialize_item(u, f, "accept-socket", UNIT_DEREF(s->accept_socket)->id); | |
2542 | if (r < 0) | |
2543 | return r; | |
2544 | } | |
2545 | ||
a34ceba6 | 2546 | r = unit_serialize_item_fd(u, f, fds, "socket-fd", s->socket_fd); |
a34ceba6 LP |
2547 | if (r < 0) |
2548 | return r; | |
e44da745 | 2549 | |
2339fc93 | 2550 | LIST_FOREACH(fd_store, fs, s->fd_store) { |
8dd4c05b | 2551 | _cleanup_free_ char *c = NULL; |
2339fc93 LP |
2552 | int copy; |
2553 | ||
2554 | copy = fdset_put_dup(fds, fs->fd); | |
2555 | if (copy < 0) | |
2556 | return copy; | |
2557 | ||
8dd4c05b LP |
2558 | c = cescape(fs->fdname); |
2559 | ||
2560 | unit_serialize_item_format(u, f, "fd-store-fd", "%i %s", copy, strempty(c)); | |
2339fc93 LP |
2561 | } |
2562 | ||
ecdbca40 | 2563 | if (s->main_exec_status.pid > 0) { |
f06db334 LP |
2564 | unit_serialize_item_format(u, f, "main-exec-status-pid", PID_FMT, s->main_exec_status.pid); |
2565 | dual_timestamp_serialize(f, "main-exec-status-start", &s->main_exec_status.start_timestamp); | |
2566 | dual_timestamp_serialize(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp); | |
ecdbca40 | 2567 | |
799fd0fd | 2568 | if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) { |
f06db334 LP |
2569 | unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code); |
2570 | unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status); | |
ecdbca40 LP |
2571 | } |
2572 | } | |
f06db334 | 2573 | |
36b693a6 | 2574 | dual_timestamp_serialize(f, "watchdog-timestamp", &s->watchdog_timestamp); |
ecdbca40 | 2575 | |
a34ceba6 | 2576 | unit_serialize_item(u, f, "forbid-restart", yes_no(s->forbid_restart)); |
6aca9a58 | 2577 | |
2787d83c M |
2578 | if (s->watchdog_override_enable) |
2579 | unit_serialize_item_format(u, f, "watchdog-override-usec", USEC_FMT, s->watchdog_override_usec); | |
2580 | ||
a16e1123 LP |
2581 | return 0; |
2582 | } | |
2583 | ||
e266c068 MS |
2584 | static int service_deserialize_exec_command(Unit *u, const char *key, const char *value) { |
2585 | Service *s = SERVICE(u); | |
2586 | int r; | |
2587 | unsigned idx = 0, i; | |
2588 | bool control, found = false; | |
2589 | ServiceExecCommand id = _SERVICE_EXEC_COMMAND_INVALID; | |
2590 | ExecCommand *command = NULL; | |
6eeec374 | 2591 | _cleanup_free_ char *path = NULL; |
e266c068 MS |
2592 | _cleanup_strv_free_ char **argv = NULL; |
2593 | ||
2594 | enum ExecCommandState { | |
2595 | STATE_EXEC_COMMAND_TYPE, | |
2596 | STATE_EXEC_COMMAND_INDEX, | |
2597 | STATE_EXEC_COMMAND_PATH, | |
2598 | STATE_EXEC_COMMAND_ARGS, | |
2599 | _STATE_EXEC_COMMAND_MAX, | |
2600 | _STATE_EXEC_COMMAND_INVALID = -1, | |
2601 | } state; | |
2602 | ||
2603 | assert(s); | |
2604 | assert(key); | |
2605 | assert(value); | |
2606 | ||
2607 | control = streq(key, "control-command"); | |
2608 | ||
2609 | state = STATE_EXEC_COMMAND_TYPE; | |
2610 | ||
2611 | for (;;) { | |
2612 | _cleanup_free_ char *arg = NULL; | |
2613 | ||
2614 | r = extract_first_word(&value, &arg, NULL, EXTRACT_CUNESCAPE); | |
efa3f34e LP |
2615 | if (r < 0) |
2616 | return r; | |
e266c068 MS |
2617 | if (r == 0) |
2618 | break; | |
e266c068 MS |
2619 | |
2620 | switch (state) { | |
2621 | case STATE_EXEC_COMMAND_TYPE: | |
2622 | id = service_exec_command_from_string(arg); | |
2623 | if (id < 0) | |
2624 | return -EINVAL; | |
2625 | ||
2626 | state = STATE_EXEC_COMMAND_INDEX; | |
2627 | break; | |
2628 | case STATE_EXEC_COMMAND_INDEX: | |
2629 | r = safe_atou(arg, &idx); | |
2630 | if (r < 0) | |
2631 | return -EINVAL; | |
2632 | ||
2633 | state = STATE_EXEC_COMMAND_PATH; | |
2634 | break; | |
2635 | case STATE_EXEC_COMMAND_PATH: | |
ae2a15bc | 2636 | path = TAKE_PTR(arg); |
e266c068 MS |
2637 | state = STATE_EXEC_COMMAND_ARGS; |
2638 | ||
2639 | if (!path_is_absolute(path)) | |
2640 | return -EINVAL; | |
2641 | break; | |
2642 | case STATE_EXEC_COMMAND_ARGS: | |
2643 | r = strv_extend(&argv, arg); | |
2644 | if (r < 0) | |
2645 | return -ENOMEM; | |
2646 | break; | |
2647 | default: | |
2648 | assert_not_reached("Unknown error at deserialization of exec command"); | |
2649 | break; | |
2650 | } | |
2651 | } | |
2652 | ||
2653 | if (state != STATE_EXEC_COMMAND_ARGS) | |
2654 | return -EINVAL; | |
2655 | ||
2656 | /* Let's check whether exec command on given offset matches data that we just deserialized */ | |
2657 | for (command = s->exec_command[id], i = 0; command; command = command->command_next, i++) { | |
2658 | if (i != idx) | |
2659 | continue; | |
2660 | ||
2661 | found = strv_equal(argv, command->argv) && streq(command->path, path); | |
2662 | break; | |
2663 | } | |
2664 | ||
2665 | if (!found) { | |
2666 | /* Command at the index we serialized is different, let's look for command that exactly | |
2667 | * matches but is on different index. If there is no such command we will not resume execution. */ | |
2668 | for (command = s->exec_command[id]; command; command = command->command_next) | |
2669 | if (strv_equal(command->argv, argv) && streq(command->path, path)) | |
2670 | break; | |
2671 | } | |
2672 | ||
2673 | if (command && control) | |
2674 | s->control_command = command; | |
2675 | else if (command) | |
2676 | s->main_command = command; | |
2677 | else | |
2678 | log_unit_warning(u, "Current command vanished from the unit file, execution of the command list won't be resumed."); | |
2679 | ||
2680 | return 0; | |
2681 | } | |
2682 | ||
a16e1123 LP |
2683 | static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { |
2684 | Service *s = SERVICE(u); | |
2339fc93 | 2685 | int r; |
a16e1123 LP |
2686 | |
2687 | assert(u); | |
2688 | assert(key); | |
2689 | assert(value); | |
2690 | assert(fds); | |
2691 | ||
2692 | if (streq(key, "state")) { | |
2693 | ServiceState state; | |
2694 | ||
117dcc57 ZJS |
2695 | state = service_state_from_string(value); |
2696 | if (state < 0) | |
f2341e0a | 2697 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
2698 | else |
2699 | s->deserialized_state = state; | |
f42806df LP |
2700 | } else if (streq(key, "result")) { |
2701 | ServiceResult f; | |
2702 | ||
2703 | f = service_result_from_string(value); | |
2704 | if (f < 0) | |
f2341e0a | 2705 | log_unit_debug(u, "Failed to parse result value: %s", value); |
f42806df LP |
2706 | else if (f != SERVICE_SUCCESS) |
2707 | s->result = f; | |
2708 | ||
2709 | } else if (streq(key, "reload-result")) { | |
2710 | ServiceResult f; | |
2711 | ||
2712 | f = service_result_from_string(value); | |
2713 | if (f < 0) | |
f2341e0a | 2714 | log_unit_debug(u, "Failed to parse reload result value: %s", value); |
f42806df LP |
2715 | else if (f != SERVICE_SUCCESS) |
2716 | s->reload_result = f; | |
a16e1123 | 2717 | |
a16e1123 | 2718 | } else if (streq(key, "control-pid")) { |
5925dd3c | 2719 | pid_t pid; |
a16e1123 | 2720 | |
e364ad06 | 2721 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2722 | log_unit_debug(u, "Failed to parse control-pid value: %s", value); |
a16e1123 | 2723 | else |
e55224ca | 2724 | s->control_pid = pid; |
a16e1123 | 2725 | } else if (streq(key, "main-pid")) { |
5925dd3c | 2726 | pid_t pid; |
a16e1123 | 2727 | |
e364ad06 | 2728 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2729 | log_unit_debug(u, "Failed to parse main-pid value: %s", value); |
eabd3e56 LP |
2730 | else |
2731 | (void) service_set_main_pid(s, pid); | |
a16e1123 LP |
2732 | } else if (streq(key, "main-pid-known")) { |
2733 | int b; | |
2734 | ||
117dcc57 ZJS |
2735 | b = parse_boolean(value); |
2736 | if (b < 0) | |
f2341e0a | 2737 | log_unit_debug(u, "Failed to parse main-pid-known value: %s", value); |
a16e1123 LP |
2738 | else |
2739 | s->main_pid_known = b; | |
de1d4f9b WF |
2740 | } else if (streq(key, "bus-name-good")) { |
2741 | int b; | |
2742 | ||
2743 | b = parse_boolean(value); | |
2744 | if (b < 0) | |
2745 | log_unit_debug(u, "Failed to parse bus-name-good value: %s", value); | |
2746 | else | |
2747 | s->bus_name_good = b; | |
d8ccf5fd DM |
2748 | } else if (streq(key, "bus-name-owner")) { |
2749 | r = free_and_strdup(&s->bus_name_owner, value); | |
2750 | if (r < 0) | |
2751 | log_unit_error_errno(u, r, "Unable to deserialize current bus owner %s: %m", value); | |
3a2776bc LP |
2752 | } else if (streq(key, "status-text")) { |
2753 | char *t; | |
2754 | ||
f2341e0a LP |
2755 | r = cunescape(value, 0, &t); |
2756 | if (r < 0) | |
5e1ee764 | 2757 | log_unit_debug_errno(u, r, "Failed to unescape status text '%s': %m", value); |
efa3f34e LP |
2758 | else |
2759 | free_and_replace(s->status_text, t); | |
3a2776bc | 2760 | |
9dfb64f8 ZJS |
2761 | } else if (streq(key, "accept-socket")) { |
2762 | Unit *socket; | |
2763 | ||
2764 | r = manager_load_unit(u->manager, value, NULL, NULL, &socket); | |
2765 | if (r < 0) | |
5e1ee764 | 2766 | log_unit_debug_errno(u, r, "Failed to load accept-socket unit '%s': %m", value); |
9dfb64f8 | 2767 | else { |
7f7d01ed | 2768 | unit_ref_set(&s->accept_socket, u, socket); |
9dfb64f8 ZJS |
2769 | SOCKET(socket)->n_connections++; |
2770 | } | |
2771 | ||
a16e1123 LP |
2772 | } else if (streq(key, "socket-fd")) { |
2773 | int fd; | |
2774 | ||
2775 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 2776 | log_unit_debug(u, "Failed to parse socket-fd value: %s", value); |
a16e1123 | 2777 | else { |
574634bc | 2778 | asynchronous_close(s->socket_fd); |
a16e1123 LP |
2779 | s->socket_fd = fdset_remove(fds, fd); |
2780 | } | |
2339fc93 | 2781 | } else if (streq(key, "fd-store-fd")) { |
8dd4c05b LP |
2782 | const char *fdv; |
2783 | size_t pf; | |
2339fc93 LP |
2784 | int fd; |
2785 | ||
8dd4c05b LP |
2786 | pf = strcspn(value, WHITESPACE); |
2787 | fdv = strndupa(value, pf); | |
2788 | ||
2789 | if (safe_atoi(fdv, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 2790 | log_unit_debug(u, "Failed to parse fd-store-fd value: %s", value); |
2339fc93 | 2791 | else { |
8dd4c05b LP |
2792 | _cleanup_free_ char *t = NULL; |
2793 | const char *fdn; | |
2794 | ||
2795 | fdn = value + pf; | |
2796 | fdn += strspn(fdn, WHITESPACE); | |
2797 | (void) cunescape(fdn, 0, &t); | |
2798 | ||
2799 | r = service_add_fd_store(s, fd, t); | |
2339fc93 | 2800 | if (r < 0) |
f2341e0a | 2801 | log_unit_error_errno(u, r, "Failed to add fd to store: %m"); |
9021ff17 | 2802 | else |
2339fc93 LP |
2803 | fdset_remove(fds, fd); |
2804 | } | |
2805 | ||
ecdbca40 LP |
2806 | } else if (streq(key, "main-exec-status-pid")) { |
2807 | pid_t pid; | |
2808 | ||
e364ad06 | 2809 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2810 | log_unit_debug(u, "Failed to parse main-exec-status-pid value: %s", value); |
ecdbca40 LP |
2811 | else |
2812 | s->main_exec_status.pid = pid; | |
2813 | } else if (streq(key, "main-exec-status-code")) { | |
2814 | int i; | |
2815 | ||
e364ad06 | 2816 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 2817 | log_unit_debug(u, "Failed to parse main-exec-status-code value: %s", value); |
ecdbca40 LP |
2818 | else |
2819 | s->main_exec_status.code = i; | |
2820 | } else if (streq(key, "main-exec-status-status")) { | |
2821 | int i; | |
2822 | ||
e364ad06 | 2823 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 2824 | log_unit_debug(u, "Failed to parse main-exec-status-status value: %s", value); |
ecdbca40 LP |
2825 | else |
2826 | s->main_exec_status.status = i; | |
799fd0fd LP |
2827 | } else if (streq(key, "main-exec-status-start")) |
2828 | dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp); | |
2829 | else if (streq(key, "main-exec-status-exit")) | |
2830 | dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp); | |
a6927d7f MO |
2831 | else if (streq(key, "watchdog-timestamp")) |
2832 | dual_timestamp_deserialize(value, &s->watchdog_timestamp); | |
613b411c | 2833 | else if (streq(key, "forbid-restart")) { |
6aca9a58 SE |
2834 | int b; |
2835 | ||
2836 | b = parse_boolean(value); | |
2837 | if (b < 0) | |
f2341e0a | 2838 | log_unit_debug(u, "Failed to parse forbid-restart value: %s", value); |
6aca9a58 SE |
2839 | else |
2840 | s->forbid_restart = b; | |
a34ceba6 LP |
2841 | } else if (streq(key, "stdin-fd")) { |
2842 | int fd; | |
2843 | ||
2844 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2845 | log_unit_debug(u, "Failed to parse stdin-fd value: %s", value); | |
2846 | else { | |
2847 | asynchronous_close(s->stdin_fd); | |
2848 | s->stdin_fd = fdset_remove(fds, fd); | |
1e22b5cd | 2849 | s->exec_context.stdio_as_fds = true; |
a34ceba6 LP |
2850 | } |
2851 | } else if (streq(key, "stdout-fd")) { | |
2852 | int fd; | |
2853 | ||
2854 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2855 | log_unit_debug(u, "Failed to parse stdout-fd value: %s", value); | |
2856 | else { | |
2857 | asynchronous_close(s->stdout_fd); | |
2858 | s->stdout_fd = fdset_remove(fds, fd); | |
1e22b5cd | 2859 | s->exec_context.stdio_as_fds = true; |
a34ceba6 LP |
2860 | } |
2861 | } else if (streq(key, "stderr-fd")) { | |
2862 | int fd; | |
2863 | ||
2864 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2865 | log_unit_debug(u, "Failed to parse stderr-fd value: %s", value); | |
2866 | else { | |
2867 | asynchronous_close(s->stderr_fd); | |
2868 | s->stderr_fd = fdset_remove(fds, fd); | |
1e22b5cd | 2869 | s->exec_context.stdio_as_fds = true; |
a34ceba6 | 2870 | } |
5686391b LP |
2871 | } else if (streq(key, "exec-fd")) { |
2872 | int fd; | |
2873 | ||
2874 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2875 | log_unit_debug(u, "Failed to parse exec-fd value: %s", value); | |
2876 | else { | |
2877 | s->exec_fd_event_source = sd_event_source_unref(s->exec_fd_event_source); | |
2878 | ||
2879 | fd = fdset_remove(fds, fd); | |
2880 | if (service_allocate_exec_fd_event_source(s, fd, &s->exec_fd_event_source) < 0) | |
2881 | safe_close(fd); | |
2882 | } | |
2787d83c M |
2883 | } else if (streq(key, "watchdog-override-usec")) { |
2884 | usec_t watchdog_override_usec; | |
2885 | if (timestamp_deserialize(value, &watchdog_override_usec) < 0) | |
2886 | log_unit_debug(u, "Failed to parse watchdog_override_usec value: %s", value); | |
2887 | else { | |
2888 | s->watchdog_override_enable = true; | |
2889 | s->watchdog_override_usec = watchdog_override_usec; | |
2890 | } | |
e266c068 MS |
2891 | } else if (STR_IN_SET(key, "main-command", "control-command")) { |
2892 | r = service_deserialize_exec_command(u, key, value); | |
2893 | if (r < 0) | |
2894 | log_unit_debug_errno(u, r, "Failed to parse serialized command \"%s\": %m", value); | |
7a0019d3 LP |
2895 | |
2896 | } else if (streq(key, "n-restarts")) { | |
2897 | r = safe_atou(value, &s->n_restarts); | |
2898 | if (r < 0) | |
2899 | log_unit_debug_errno(u, r, "Failed to parse serialized restart counter '%s': %m", value); | |
2900 | ||
2901 | } else if (streq(key, "flush-n-restarts")) { | |
2902 | r = parse_boolean(value); | |
2903 | if (r < 0) | |
2904 | log_unit_debug_errno(u, r, "Failed to parse serialized flush restart counter setting '%s': %m", value); | |
2905 | else | |
2906 | s->flush_n_restarts = r; | |
c17ec25e | 2907 | } else |
f2341e0a | 2908 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
2909 | |
2910 | return 0; | |
2911 | } | |
2912 | ||
44a6b1b6 | 2913 | _pure_ static UnitActiveState service_active_state(Unit *u) { |
e056b01d LP |
2914 | const UnitActiveState *table; |
2915 | ||
87f0e418 | 2916 | assert(u); |
5cb5a6ff | 2917 | |
e056b01d LP |
2918 | table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
2919 | ||
2920 | return table[SERVICE(u)->state]; | |
034c6ed7 LP |
2921 | } |
2922 | ||
10a94420 LP |
2923 | static const char *service_sub_state_to_string(Unit *u) { |
2924 | assert(u); | |
2925 | ||
2926 | return service_state_to_string(SERVICE(u)->state); | |
2927 | } | |
2928 | ||
f2f725e5 | 2929 | static bool service_may_gc(Unit *u) { |
701cc384 LP |
2930 | Service *s = SERVICE(u); |
2931 | ||
2932 | assert(s); | |
2933 | ||
e98b2fbb | 2934 | /* Never clean up services that still have a process around, even if the service is formally dead. Note that |
f2f725e5 | 2935 | * unit_may_gc() already checked our cgroup for us, we just check our two additional PIDs, too, in case they |
e98b2fbb LP |
2936 | * have moved outside of the cgroup. */ |
2937 | ||
2938 | if (main_pid_good(s) > 0 || | |
6d55002a | 2939 | control_pid_good(s) > 0) |
f2f725e5 | 2940 | return false; |
6d55002a | 2941 | |
f2f725e5 | 2942 | return true; |
6d55002a LP |
2943 | } |
2944 | ||
3a111838 MS |
2945 | static int service_retry_pid_file(Service *s) { |
2946 | int r; | |
2947 | ||
2948 | assert(s->pid_file); | |
3742095b | 2949 | assert(IN_SET(s->state, SERVICE_START, SERVICE_START_POST)); |
3a111838 MS |
2950 | |
2951 | r = service_load_pid_file(s, false); | |
2952 | if (r < 0) | |
2953 | return r; | |
2954 | ||
2955 | service_unwatch_pid_file(s); | |
2956 | ||
f42806df | 2957 | service_enter_running(s, SERVICE_SUCCESS); |
3a111838 MS |
2958 | return 0; |
2959 | } | |
2960 | ||
2961 | static int service_watch_pid_file(Service *s) { | |
2962 | int r; | |
2963 | ||
f2341e0a | 2964 | log_unit_debug(UNIT(s), "Setting watch for PID file %s", s->pid_file_pathspec->path); |
8bb2d17d | 2965 | |
5686391b | 2966 | r = path_spec_watch(s->pid_file_pathspec, service_dispatch_inotify_io); |
3a111838 MS |
2967 | if (r < 0) |
2968 | goto fail; | |
2969 | ||
2970 | /* the pidfile might have appeared just before we set the watch */ | |
f2341e0a | 2971 | log_unit_debug(UNIT(s), "Trying to read PID file %s in case it changed", s->pid_file_pathspec->path); |
3a111838 MS |
2972 | service_retry_pid_file(s); |
2973 | ||
2974 | return 0; | |
2975 | fail: | |
f2341e0a | 2976 | log_unit_error_errno(UNIT(s), r, "Failed to set a watch for PID file %s: %m", s->pid_file_pathspec->path); |
3a111838 MS |
2977 | service_unwatch_pid_file(s); |
2978 | return r; | |
2979 | } | |
2980 | ||
2981 | static int service_demand_pid_file(Service *s) { | |
2982 | PathSpec *ps; | |
2983 | ||
2984 | assert(s->pid_file); | |
2985 | assert(!s->pid_file_pathspec); | |
2986 | ||
2987 | ps = new0(PathSpec, 1); | |
2988 | if (!ps) | |
2989 | return -ENOMEM; | |
2990 | ||
718db961 | 2991 | ps->unit = UNIT(s); |
3a111838 MS |
2992 | ps->path = strdup(s->pid_file); |
2993 | if (!ps->path) { | |
2994 | free(ps); | |
2995 | return -ENOMEM; | |
2996 | } | |
2997 | ||
858d36c1 | 2998 | path_simplify(ps->path, false); |
3a111838 MS |
2999 | |
3000 | /* PATH_CHANGED would not be enough. There are daemons (sendmail) that | |
3001 | * keep their PID file open all the time. */ | |
3002 | ps->type = PATH_MODIFIED; | |
3003 | ps->inotify_fd = -1; | |
3004 | ||
3005 | s->pid_file_pathspec = ps; | |
3006 | ||
3007 | return service_watch_pid_file(s); | |
3008 | } | |
3009 | ||
5686391b | 3010 | static int service_dispatch_inotify_io(sd_event_source *source, int fd, uint32_t events, void *userdata) { |
e14c2802 LP |
3011 | PathSpec *p = userdata; |
3012 | Service *s; | |
3013 | ||
3014 | assert(p); | |
3015 | ||
3016 | s = SERVICE(p->unit); | |
3a111838 MS |
3017 | |
3018 | assert(s); | |
3019 | assert(fd >= 0); | |
3742095b | 3020 | assert(IN_SET(s->state, SERVICE_START, SERVICE_START_POST)); |
3a111838 | 3021 | assert(s->pid_file_pathspec); |
57020a3a | 3022 | assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd)); |
3a111838 | 3023 | |
f2341e0a | 3024 | log_unit_debug(UNIT(s), "inotify event"); |
3a111838 | 3025 | |
e14c2802 | 3026 | if (path_spec_fd_event(p, events) < 0) |
3a111838 MS |
3027 | goto fail; |
3028 | ||
3029 | if (service_retry_pid_file(s) == 0) | |
718db961 | 3030 | return 0; |
3a111838 MS |
3031 | |
3032 | if (service_watch_pid_file(s) < 0) | |
3033 | goto fail; | |
3034 | ||
718db961 LP |
3035 | return 0; |
3036 | ||
3a111838 MS |
3037 | fail: |
3038 | service_unwatch_pid_file(s); | |
f42806df | 3039 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
718db961 | 3040 | return 0; |
3a111838 MS |
3041 | } |
3042 | ||
5686391b LP |
3043 | static int service_dispatch_exec_io(sd_event_source *source, int fd, uint32_t events, void *userdata) { |
3044 | Service *s = SERVICE(userdata); | |
3045 | ||
3046 | assert(s); | |
3047 | ||
3048 | log_unit_debug(UNIT(s), "got exec-fd event"); | |
3049 | ||
3050 | /* If Type=exec is set, we'll consider a service started successfully the instant we invoked execve() | |
3051 | * successfully for it. We implement this through a pipe() towards the child, which the kernel automatically | |
3052 | * closes for us due to O_CLOEXEC on execve() in the child, which then triggers EOF on the pipe in the | |
3053 | * parent. We need to be careful however, as there are other reasons that we might cause the child's side of | |
3054 | * the pipe to be closed (for example, a simple exit()). To deal with that we'll ignore EOFs on the pipe unless | |
3055 | * the child signalled us first that it is about to call the execve(). It does so by sending us a simple | |
3056 | * non-zero byte via the pipe. We also provide the child with a way to inform us in case execve() failed: if it | |
3057 | * sends a zero byte we'll ignore POLLHUP on the fd again. */ | |
3058 | ||
3059 | for (;;) { | |
3060 | uint8_t x; | |
3061 | ssize_t n; | |
3062 | ||
3063 | n = read(fd, &x, sizeof(x)); | |
3064 | if (n < 0) { | |
3065 | if (errno == EAGAIN) /* O_NONBLOCK in effect → everything queued has now been processed. */ | |
3066 | return 0; | |
3067 | ||
3068 | return log_unit_error_errno(UNIT(s), errno, "Failed to read from exec_fd: %m"); | |
3069 | } | |
3070 | if (n == 0) { /* EOF → the event we are waiting for */ | |
3071 | ||
3072 | s->exec_fd_event_source = sd_event_source_unref(s->exec_fd_event_source); | |
3073 | ||
3074 | if (s->exec_fd_hot) { /* Did the child tell us to expect EOF now? */ | |
3075 | log_unit_debug(UNIT(s), "Got EOF on exec-fd"); | |
3076 | ||
3077 | s->exec_fd_hot = false; | |
3078 | ||
3079 | /* Nice! This is what we have been waiting for. Transition to next state. */ | |
3080 | if (s->type == SERVICE_EXEC && s->state == SERVICE_START) | |
3081 | service_enter_start_post(s); | |
3082 | } else | |
3083 | log_unit_debug(UNIT(s), "Got EOF on exec-fd while it was disabled, ignoring."); | |
3084 | ||
3085 | return 0; | |
3086 | } | |
3087 | ||
3088 | /* A byte was read → this turns on/off the exec fd logic */ | |
3089 | assert(n == sizeof(x)); | |
3090 | s->exec_fd_hot = x; | |
3091 | } | |
3092 | ||
3093 | return 0; | |
3094 | } | |
3095 | ||
a911bb9a LP |
3096 | static void service_notify_cgroup_empty_event(Unit *u) { |
3097 | Service *s = SERVICE(u); | |
3098 | ||
3099 | assert(u); | |
3100 | ||
f2341e0a | 3101 | log_unit_debug(u, "cgroup is empty"); |
a911bb9a LP |
3102 | |
3103 | switch (s->state) { | |
3104 | ||
3105 | /* Waiting for SIGCHLD is usually more interesting, | |
3106 | * because it includes return codes/signals. Which is | |
3107 | * why we ignore the cgroup events for most cases, | |
3108 | * except when we don't know pid which to expect the | |
3109 | * SIGCHLD for. */ | |
3110 | ||
3111 | case SERVICE_START: | |
3c751b1b LP |
3112 | if (s->type == SERVICE_NOTIFY && |
3113 | main_pid_good(s) == 0 && | |
3114 | control_pid_good(s) == 0) { | |
3d474ef7 | 3115 | /* No chance of getting a ready notification anymore */ |
c3fda31d | 3116 | service_enter_stop_post(s, SERVICE_FAILURE_PROTOCOL); |
71e529fc JW |
3117 | break; |
3118 | } | |
3119 | ||
4831981d | 3120 | _fallthrough_; |
71e529fc | 3121 | case SERVICE_START_POST: |
3c751b1b LP |
3122 | if (s->pid_file_pathspec && |
3123 | main_pid_good(s) == 0 && | |
3124 | control_pid_good(s) == 0) { | |
3125 | ||
3d474ef7 | 3126 | /* Give up hoping for the daemon to write its PID file */ |
f2341e0a | 3127 | log_unit_warning(u, "Daemon never wrote its PID file. Failing."); |
8bb2d17d | 3128 | |
a911bb9a LP |
3129 | service_unwatch_pid_file(s); |
3130 | if (s->state == SERVICE_START) | |
c3fda31d | 3131 | service_enter_stop_post(s, SERVICE_FAILURE_PROTOCOL); |
a911bb9a | 3132 | else |
c35755fb | 3133 | service_enter_stop(s, SERVICE_FAILURE_PROTOCOL); |
a911bb9a LP |
3134 | } |
3135 | break; | |
3136 | ||
3137 | case SERVICE_RUNNING: | |
3138 | /* service_enter_running() will figure out what to do */ | |
3139 | service_enter_running(s, SERVICE_SUCCESS); | |
3140 | break; | |
3141 | ||
c87700a1 | 3142 | case SERVICE_STOP_WATCHDOG: |
a911bb9a LP |
3143 | case SERVICE_STOP_SIGTERM: |
3144 | case SERVICE_STOP_SIGKILL: | |
3145 | ||
b13ddbbc | 3146 | if (main_pid_good(s) <= 0 && control_pid_good(s) <= 0) |
a911bb9a LP |
3147 | service_enter_stop_post(s, SERVICE_SUCCESS); |
3148 | ||
3149 | break; | |
3150 | ||
3151 | case SERVICE_STOP_POST: | |
3152 | case SERVICE_FINAL_SIGTERM: | |
3153 | case SERVICE_FINAL_SIGKILL: | |
b13ddbbc | 3154 | if (main_pid_good(s) <= 0 && control_pid_good(s) <= 0) |
a911bb9a LP |
3155 | service_enter_dead(s, SERVICE_SUCCESS, true); |
3156 | ||
3157 | break; | |
3158 | ||
3159 | default: | |
3160 | ; | |
3161 | } | |
3162 | } | |
3163 | ||
87f0e418 | 3164 | static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
5cdabc8d | 3165 | bool notify_dbus = true; |
87f0e418 | 3166 | Service *s = SERVICE(u); |
f42806df | 3167 | ServiceResult f; |
5cb5a6ff LP |
3168 | |
3169 | assert(s); | |
034c6ed7 LP |
3170 | assert(pid >= 0); |
3171 | ||
1f0958f6 | 3172 | if (is_clean_exit(code, status, s->type == SERVICE_ONESHOT ? EXIT_CLEAN_COMMAND : EXIT_CLEAN_DAEMON, &s->success_status)) |
f42806df LP |
3173 | f = SERVICE_SUCCESS; |
3174 | else if (code == CLD_EXITED) | |
3175 | f = SERVICE_FAILURE_EXIT_CODE; | |
3176 | else if (code == CLD_KILLED) | |
3177 | f = SERVICE_FAILURE_SIGNAL; | |
3178 | else if (code == CLD_DUMPED) | |
3179 | f = SERVICE_FAILURE_CORE_DUMP; | |
d06dacd0 | 3180 | else |
cfc4eb4c | 3181 | assert_not_reached("Unknown code"); |
034c6ed7 LP |
3182 | |
3183 | if (s->main_pid == pid) { | |
db01f8b3 MS |
3184 | /* Forking services may occasionally move to a new PID. |
3185 | * As long as they update the PID file before exiting the old | |
3186 | * PID, they're fine. */ | |
db256aab | 3187 | if (service_load_pid_file(s, false) > 0) |
db01f8b3 | 3188 | return; |
034c6ed7 | 3189 | |
034c6ed7 | 3190 | s->main_pid = 0; |
6ea832a2 | 3191 | exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status); |
034c6ed7 | 3192 | |
867b3b7d | 3193 | if (s->main_command) { |
fbeefb45 LP |
3194 | /* If this is not a forking service than the |
3195 | * main process got started and hence we copy | |
3196 | * the exit status so that it is recorded both | |
3197 | * as main and as control process exit | |
3198 | * status */ | |
3199 | ||
867b3b7d | 3200 | s->main_command->exec_status = s->main_exec_status; |
b708e7ce | 3201 | |
3ed0cd26 | 3202 | if (s->main_command->flags & EXEC_COMMAND_IGNORE_FAILURE) |
f42806df | 3203 | f = SERVICE_SUCCESS; |
fbeefb45 LP |
3204 | } else if (s->exec_command[SERVICE_EXEC_START]) { |
3205 | ||
3206 | /* If this is a forked process, then we should | |
3207 | * ignore the return value if this was | |
3208 | * configured for the starter process */ | |
3209 | ||
3ed0cd26 | 3210 | if (s->exec_command[SERVICE_EXEC_START]->flags & EXEC_COMMAND_IGNORE_FAILURE) |
fbeefb45 | 3211 | f = SERVICE_SUCCESS; |
034c6ed7 LP |
3212 | } |
3213 | ||
5368222d LP |
3214 | /* When this is a successful exit, let's log about the exit code on DEBUG level. If this is a failure |
3215 | * and the process exited on its own via exit(), then let's make this a NOTICE, under the assumption | |
3216 | * that the service already logged the reason at a higher log level on its own. However, if the service | |
3217 | * died due to a signal, then it most likely didn't say anything about any reason, hence let's raise | |
3218 | * our log level to WARNING then. */ | |
3219 | ||
3220 | log_struct(f == SERVICE_SUCCESS ? LOG_DEBUG : | |
3221 | (code == CLD_EXITED ? LOG_NOTICE : LOG_WARNING), | |
f2341e0a LP |
3222 | LOG_UNIT_MESSAGE(u, "Main process exited, code=%s, status=%i/%s", |
3223 | sigchld_code_to_string(code), status, | |
e2cc6eca LP |
3224 | strna(code == CLD_EXITED |
3225 | ? exit_status_to_string(status, EXIT_STATUS_FULL) | |
3226 | : signal_to_string(status))), | |
f2341e0a LP |
3227 | "EXIT_CODE=%s", sigchld_code_to_string(code), |
3228 | "EXIT_STATUS=%i", status, | |
ba360bb0 | 3229 | LOG_UNIT_ID(u), |
a1230ff9 | 3230 | LOG_UNIT_INVOCATION_ID(u)); |
f42806df | 3231 | |
a0fef983 | 3232 | if (s->result == SERVICE_SUCCESS) |
f42806df | 3233 | s->result = f; |
034c6ed7 | 3234 | |
867b3b7d LP |
3235 | if (s->main_command && |
3236 | s->main_command->command_next && | |
b58aeb70 | 3237 | s->type == SERVICE_ONESHOT && |
f42806df | 3238 | f == SERVICE_SUCCESS) { |
034c6ed7 | 3239 | |
34e9ba66 LP |
3240 | /* There is another command to * |
3241 | * execute, so let's do that. */ | |
034c6ed7 | 3242 | |
f2341e0a | 3243 | log_unit_debug(u, "Running next main command for state %s.", service_state_to_string(s->state)); |
f42806df | 3244 | service_run_next_main(s); |
034c6ed7 | 3245 | |
34e9ba66 LP |
3246 | } else { |
3247 | ||
3248 | /* The service exited, so the service is officially | |
3249 | * gone. */ | |
867b3b7d | 3250 | s->main_command = NULL; |
34e9ba66 LP |
3251 | |
3252 | switch (s->state) { | |
3253 | ||
3254 | case SERVICE_START_POST: | |
3255 | case SERVICE_RELOAD: | |
3256 | case SERVICE_STOP: | |
3257 | /* Need to wait until the operation is | |
3258 | * done */ | |
c4653a4d | 3259 | break; |
7d55e835 | 3260 | |
34e9ba66 LP |
3261 | case SERVICE_START: |
3262 | if (s->type == SERVICE_ONESHOT) { | |
3263 | /* This was our main goal, so let's go on */ | |
f42806df | 3264 | if (f == SERVICE_SUCCESS) |
34e9ba66 LP |
3265 | service_enter_start_post(s); |
3266 | else | |
c3fda31d | 3267 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
34e9ba66 | 3268 | break; |
3d474ef7 JW |
3269 | } else if (s->type == SERVICE_NOTIFY) { |
3270 | /* Only enter running through a notification, so that the | |
3271 | * SERVICE_START state signifies that no ready notification | |
3272 | * has been received */ | |
3273 | if (f != SERVICE_SUCCESS) | |
c3fda31d | 3274 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
df66b93f JW |
3275 | else if (!s->remain_after_exit || s->notify_access == NOTIFY_MAIN) |
3276 | /* The service has never been and will never be active */ | |
c3fda31d | 3277 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_PROTOCOL); |
3d474ef7 | 3278 | break; |
34e9ba66 | 3279 | } |
034c6ed7 | 3280 | |
4831981d | 3281 | _fallthrough_; |
34e9ba66 | 3282 | case SERVICE_RUNNING: |
f42806df | 3283 | service_enter_running(s, f); |
34e9ba66 | 3284 | break; |
034c6ed7 | 3285 | |
c87700a1 | 3286 | case SERVICE_STOP_WATCHDOG: |
34e9ba66 LP |
3287 | case SERVICE_STOP_SIGTERM: |
3288 | case SERVICE_STOP_SIGKILL: | |
5cb5a6ff | 3289 | |
b13ddbbc | 3290 | if (control_pid_good(s) <= 0) |
f42806df | 3291 | service_enter_stop_post(s, f); |
5cb5a6ff | 3292 | |
34e9ba66 LP |
3293 | /* If there is still a control process, wait for that first */ |
3294 | break; | |
3295 | ||
bf108e55 LP |
3296 | case SERVICE_STOP_POST: |
3297 | case SERVICE_FINAL_SIGTERM: | |
3298 | case SERVICE_FINAL_SIGKILL: | |
3299 | ||
b13ddbbc | 3300 | if (control_pid_good(s) <= 0) |
bf108e55 LP |
3301 | service_enter_dead(s, f, true); |
3302 | break; | |
3303 | ||
34e9ba66 LP |
3304 | default: |
3305 | assert_not_reached("Uh, main process died at wrong time."); | |
3306 | } | |
034c6ed7 | 3307 | } |
5cb5a6ff | 3308 | |
034c6ed7 | 3309 | } else if (s->control_pid == pid) { |
34e9ba66 LP |
3310 | s->control_pid = 0; |
3311 | ||
b708e7ce | 3312 | if (s->control_command) { |
8bb2d17d | 3313 | exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status); |
a16e1123 | 3314 | |
3ed0cd26 | 3315 | if (s->control_command->flags & EXEC_COMMAND_IGNORE_FAILURE) |
f42806df | 3316 | f = SERVICE_SUCCESS; |
b708e7ce LP |
3317 | } |
3318 | ||
f2341e0a LP |
3319 | log_unit_full(u, f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, 0, |
3320 | "Control process exited, code=%s status=%i", | |
3321 | sigchld_code_to_string(code), status); | |
f42806df | 3322 | |
a0fef983 | 3323 | if (s->result == SERVICE_SUCCESS) |
f42806df | 3324 | s->result = f; |
034c6ed7 | 3325 | |
34e9ba66 LP |
3326 | if (s->control_command && |
3327 | s->control_command->command_next && | |
f42806df | 3328 | f == SERVICE_SUCCESS) { |
034c6ed7 LP |
3329 | |
3330 | /* There is another command to * | |
3331 | * execute, so let's do that. */ | |
3332 | ||
f2341e0a | 3333 | log_unit_debug(u, "Running next control command for state %s.", service_state_to_string(s->state)); |
f42806df | 3334 | service_run_next_control(s); |
034c6ed7 | 3335 | |
80876c20 | 3336 | } else { |
034c6ed7 LP |
3337 | /* No further commands for this step, so let's |
3338 | * figure out what to do next */ | |
3339 | ||
a16e1123 LP |
3340 | s->control_command = NULL; |
3341 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
3342 | ||
f2341e0a | 3343 | log_unit_debug(u, "Got final SIGCHLD for state %s.", service_state_to_string(s->state)); |
bd982a8b | 3344 | |
034c6ed7 LP |
3345 | switch (s->state) { |
3346 | ||
3347 | case SERVICE_START_PRE: | |
f42806df | 3348 | if (f == SERVICE_SUCCESS) |
034c6ed7 LP |
3349 | service_enter_start(s); |
3350 | else | |
c3fda31d | 3351 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
034c6ed7 LP |
3352 | break; |
3353 | ||
3354 | case SERVICE_START: | |
bfba3256 LP |
3355 | if (s->type != SERVICE_FORKING) |
3356 | /* Maybe spurious event due to a reload that changed the type? */ | |
3357 | break; | |
034c6ed7 | 3358 | |
f42806df | 3359 | if (f != SERVICE_SUCCESS) { |
c3fda31d | 3360 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
3a111838 MS |
3361 | break; |
3362 | } | |
034c6ed7 | 3363 | |
3a111838 | 3364 | if (s->pid_file) { |
f42806df LP |
3365 | bool has_start_post; |
3366 | int r; | |
3367 | ||
3a111838 MS |
3368 | /* Let's try to load the pid file here if we can. |
3369 | * The PID file might actually be created by a START_POST | |
3370 | * script. In that case don't worry if the loading fails. */ | |
f42806df | 3371 | |
5d904a6a | 3372 | has_start_post = s->exec_command[SERVICE_EXEC_START_POST]; |
f42806df | 3373 | r = service_load_pid_file(s, !has_start_post); |
3a111838 MS |
3374 | if (!has_start_post && r < 0) { |
3375 | r = service_demand_pid_file(s); | |
b13ddbbc | 3376 | if (r < 0 || cgroup_good(s) == 0) |
c3fda31d | 3377 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_PROTOCOL); |
3a111838 MS |
3378 | break; |
3379 | } | |
034c6ed7 | 3380 | } else |
783e05d6 | 3381 | service_search_main_pid(s); |
034c6ed7 | 3382 | |
3a111838 | 3383 | service_enter_start_post(s); |
034c6ed7 LP |
3384 | break; |
3385 | ||
3386 | case SERVICE_START_POST: | |
f42806df | 3387 | if (f != SERVICE_SUCCESS) { |
ce359e98 | 3388 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
2096e009 | 3389 | break; |
034c6ed7 LP |
3390 | } |
3391 | ||
2096e009 | 3392 | if (s->pid_file) { |
f42806df LP |
3393 | int r; |
3394 | ||
3395 | r = service_load_pid_file(s, true); | |
2096e009 MS |
3396 | if (r < 0) { |
3397 | r = service_demand_pid_file(s); | |
b13ddbbc | 3398 | if (r < 0 || cgroup_good(s) == 0) |
c35755fb | 3399 | service_enter_stop(s, SERVICE_FAILURE_PROTOCOL); |
2096e009 MS |
3400 | break; |
3401 | } | |
3402 | } else | |
783e05d6 | 3403 | service_search_main_pid(s); |
2096e009 | 3404 | |
f42806df | 3405 | service_enter_running(s, SERVICE_SUCCESS); |
3185a36b | 3406 | break; |
034c6ed7 LP |
3407 | |
3408 | case SERVICE_RELOAD: | |
7236ce6e ZJS |
3409 | if (f == SERVICE_SUCCESS) |
3410 | if (service_load_pid_file(s, true) < 0) | |
3411 | service_search_main_pid(s); | |
3185a36b | 3412 | |
f42806df LP |
3413 | s->reload_result = f; |
3414 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
3415 | break; |
3416 | ||
3417 | case SERVICE_STOP: | |
f42806df | 3418 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
034c6ed7 LP |
3419 | break; |
3420 | ||
c87700a1 | 3421 | case SERVICE_STOP_WATCHDOG: |
034c6ed7 LP |
3422 | case SERVICE_STOP_SIGTERM: |
3423 | case SERVICE_STOP_SIGKILL: | |
3424 | if (main_pid_good(s) <= 0) | |
f42806df | 3425 | service_enter_stop_post(s, f); |
034c6ed7 LP |
3426 | |
3427 | /* If there is still a service | |
3428 | * process around, wait until | |
3429 | * that one quit, too */ | |
3430 | break; | |
3431 | ||
3432 | case SERVICE_STOP_POST: | |
3433 | case SERVICE_FINAL_SIGTERM: | |
3434 | case SERVICE_FINAL_SIGKILL: | |
bf108e55 LP |
3435 | if (main_pid_good(s) <= 0) |
3436 | service_enter_dead(s, f, true); | |
034c6ed7 LP |
3437 | break; |
3438 | ||
3439 | default: | |
3440 | assert_not_reached("Uh, control process died at wrong time."); | |
3441 | } | |
3442 | } | |
5cdabc8d LP |
3443 | } else /* Neither control nor main PID? If so, don't notify about anything */ |
3444 | notify_dbus = false; | |
c4e2ceae LP |
3445 | |
3446 | /* Notify clients about changed exit status */ | |
5cdabc8d LP |
3447 | if (notify_dbus) |
3448 | unit_add_to_dbus_queue(u); | |
a911bb9a | 3449 | |
11aef522 LP |
3450 | /* If we get a SIGCHLD event for one of the processes we were interested in, then we look for others to watch, |
3451 | * under the assumption that we'll sooner or later get a SIGCHLD for them, as the original process we watched | |
3452 | * was probably the parent of them, and they are hence now our children. */ | |
50be4f4a | 3453 | (void) unit_enqueue_rewatch_pids(u); |
034c6ed7 LP |
3454 | } |
3455 | ||
718db961 LP |
3456 | static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
3457 | Service *s = SERVICE(userdata); | |
034c6ed7 LP |
3458 | |
3459 | assert(s); | |
718db961 | 3460 | assert(source == s->timer_event_source); |
034c6ed7 LP |
3461 | |
3462 | switch (s->state) { | |
3463 | ||
3464 | case SERVICE_START_PRE: | |
3465 | case SERVICE_START: | |
f2341e0a | 3466 | log_unit_warning(UNIT(s), "%s operation timed out. Terminating.", s->state == SERVICE_START ? "Start" : "Start-pre"); |
c3fda31d | 3467 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
80876c20 LP |
3468 | break; |
3469 | ||
034c6ed7 | 3470 | case SERVICE_START_POST: |
f2341e0a | 3471 | log_unit_warning(UNIT(s), "Start-post operation timed out. Stopping."); |
ce359e98 | 3472 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3473 | break; |
3474 | ||
36c16a7c LP |
3475 | case SERVICE_RUNNING: |
3476 | log_unit_warning(UNIT(s), "Service reached runtime time limit. Stopping."); | |
3477 | service_enter_stop(s, SERVICE_FAILURE_TIMEOUT); | |
3478 | break; | |
3479 | ||
e2f3b44c | 3480 | case SERVICE_RELOAD: |
089b64d5 | 3481 | log_unit_warning(UNIT(s), "Reload operation timed out. Killing reload process."); |
e9a4f676 | 3482 | service_kill_control_process(s); |
f42806df LP |
3483 | s->reload_result = SERVICE_FAILURE_TIMEOUT; |
3484 | service_enter_running(s, SERVICE_SUCCESS); | |
e2f3b44c LP |
3485 | break; |
3486 | ||
034c6ed7 | 3487 | case SERVICE_STOP: |
f2341e0a | 3488 | log_unit_warning(UNIT(s), "Stopping timed out. Terminating."); |
f42806df | 3489 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3490 | break; |
3491 | ||
c87700a1 AZ |
3492 | case SERVICE_STOP_WATCHDOG: |
3493 | log_unit_warning(UNIT(s), "State 'stop-watchdog' timed out. Terminating."); | |
2ab2ab7b | 3494 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
db2cb23b UTL |
3495 | break; |
3496 | ||
034c6ed7 | 3497 | case SERVICE_STOP_SIGTERM: |
4819ff03 | 3498 | if (s->kill_context.send_sigkill) { |
f2341e0a | 3499 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Killing."); |
f42806df | 3500 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 3501 | } else { |
f2341e0a | 3502 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Skipping SIGKILL."); |
f42806df | 3503 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
ba035df2 LP |
3504 | } |
3505 | ||
034c6ed7 LP |
3506 | break; |
3507 | ||
3508 | case SERVICE_STOP_SIGKILL: | |
35b8ca3a | 3509 | /* Uh, we sent a SIGKILL and it is still not gone? |
034c6ed7 LP |
3510 | * Must be something we cannot kill, so let's just be |
3511 | * weirded out and continue */ | |
3512 | ||
f2341e0a | 3513 | log_unit_warning(UNIT(s), "Processes still around after SIGKILL. Ignoring."); |
f42806df | 3514 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3515 | break; |
3516 | ||
3517 | case SERVICE_STOP_POST: | |
f2341e0a | 3518 | log_unit_warning(UNIT(s), "State 'stop-post' timed out. Terminating."); |
f42806df | 3519 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3520 | break; |
3521 | ||
3522 | case SERVICE_FINAL_SIGTERM: | |
4819ff03 | 3523 | if (s->kill_context.send_sigkill) { |
f2341e0a | 3524 | log_unit_warning(UNIT(s), "State 'stop-final-sigterm' timed out. Killing."); |
f42806df | 3525 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 3526 | } else { |
f2341e0a | 3527 | log_unit_warning(UNIT(s), "State 'stop-final-sigterm' timed out. Skipping SIGKILL. Entering failed mode."); |
f42806df | 3528 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false); |
ba035df2 LP |
3529 | } |
3530 | ||
034c6ed7 LP |
3531 | break; |
3532 | ||
3533 | case SERVICE_FINAL_SIGKILL: | |
f2341e0a | 3534 | log_unit_warning(UNIT(s), "Processes still around after final SIGKILL. Entering failed mode."); |
f42806df | 3535 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true); |
034c6ed7 LP |
3536 | break; |
3537 | ||
3538 | case SERVICE_AUTO_RESTART: | |
5ce6e7f5 ZJS |
3539 | if (s->restart_usec > 0) { |
3540 | char buf_restart[FORMAT_TIMESPAN_MAX]; | |
3541 | log_unit_info(UNIT(s), | |
3542 | "Service RestartSec=%s expired, scheduling restart.", | |
3543 | format_timespan(buf_restart, sizeof buf_restart, s->restart_usec, USEC_PER_SEC)); | |
3544 | } else | |
3545 | log_unit_info(UNIT(s), | |
3546 | "Service has no hold-off time (RestartSec=0), scheduling restart."); | |
3547 | ||
034c6ed7 LP |
3548 | service_enter_restart(s); |
3549 | break; | |
3550 | ||
3551 | default: | |
3552 | assert_not_reached("Timeout at wrong time."); | |
3553 | } | |
718db961 LP |
3554 | |
3555 | return 0; | |
3556 | } | |
3557 | ||
3558 | static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata) { | |
3559 | Service *s = SERVICE(userdata); | |
a7850c7d | 3560 | char t[FORMAT_TIMESPAN_MAX]; |
2787d83c | 3561 | usec_t watchdog_usec; |
718db961 LP |
3562 | |
3563 | assert(s); | |
3564 | assert(source == s->watchdog_event_source); | |
3565 | ||
2787d83c M |
3566 | watchdog_usec = service_get_watchdog_usec(s); |
3567 | ||
2a12e32e JK |
3568 | if (UNIT(s)->manager->service_watchdogs) { |
3569 | log_unit_error(UNIT(s), "Watchdog timeout (limit %s)!", | |
3570 | format_timespan(t, sizeof(t), watchdog_usec, 1)); | |
8bb2d17d | 3571 | |
c87700a1 | 3572 | service_enter_signal(s, SERVICE_STOP_WATCHDOG, SERVICE_FAILURE_WATCHDOG); |
2a12e32e JK |
3573 | } else |
3574 | log_unit_warning(UNIT(s), "Watchdog disabled! Ignoring watchdog timeout (limit %s)!", | |
3575 | format_timespan(t, sizeof(t), watchdog_usec, 1)); | |
842129f5 | 3576 | |
718db961 | 3577 | return 0; |
5cb5a6ff LP |
3578 | } |
3579 | ||
e3285237 LP |
3580 | static bool service_notify_message_authorized(Service *s, pid_t pid, char **tags, FDSet *fds) { |
3581 | assert(s); | |
8c47c732 | 3582 | |
c952c6ec | 3583 | if (s->notify_access == NOTIFY_NONE) { |
e3285237 LP |
3584 | log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception is disabled.", pid); |
3585 | return false; | |
3586 | } | |
3587 | ||
3588 | if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) { | |
336c6e46 | 3589 | if (s->main_pid != 0) |
e3285237 | 3590 | 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 | 3591 | else |
e3285237 LP |
3592 | 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); |
3593 | ||
3594 | return false; | |
3595 | } | |
3596 | ||
3597 | if (s->notify_access == NOTIFY_EXEC && pid != s->main_pid && pid != s->control_pid) { | |
6375bd20 | 3598 | if (s->main_pid != 0 && s->control_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" and control PID "PID_FMT, |
6375bd20 JW |
3600 | pid, s->main_pid, s->control_pid); |
3601 | else if (s->main_pid != 0) | |
e3285237 | 3602 | 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 | 3603 | else if (s->control_pid != 0) |
e3285237 | 3604 | 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 | 3605 | else |
e3285237 LP |
3606 | 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); |
3607 | ||
3608 | return false; | |
9711848f LP |
3609 | } |
3610 | ||
e3285237 LP |
3611 | return true; |
3612 | } | |
3613 | ||
db256aab LP |
3614 | static void service_notify_message( |
3615 | Unit *u, | |
3616 | const struct ucred *ucred, | |
3617 | char **tags, | |
3618 | FDSet *fds) { | |
3619 | ||
e3285237 LP |
3620 | Service *s = SERVICE(u); |
3621 | bool notify_dbus = false; | |
3622 | const char *e; | |
cc2b7b11 | 3623 | char **i; |
db256aab | 3624 | int r; |
e3285237 LP |
3625 | |
3626 | assert(u); | |
db256aab | 3627 | assert(ucred); |
e3285237 | 3628 | |
db256aab | 3629 | if (!service_notify_message_authorized(SERVICE(u), ucred->pid, tags, fds)) |
e3285237 LP |
3630 | return; |
3631 | ||
f1d34068 | 3632 | if (DEBUG_LOGGING) { |
9711848f LP |
3633 | _cleanup_free_ char *cc = NULL; |
3634 | ||
3635 | cc = strv_join(tags, ", "); | |
db256aab | 3636 | log_unit_debug(u, "Got notification message from PID "PID_FMT" (%s)", ucred->pid, isempty(cc) ? "n/a" : cc); |
9711848f | 3637 | } |
c952c6ec | 3638 | |
8c47c732 | 3639 | /* Interpret MAINPID= */ |
28849dba | 3640 | e = strv_find_startswith(tags, "MAINPID="); |
5e56b378 | 3641 | if (e && IN_SET(s->state, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) { |
db256aab LP |
3642 | pid_t new_main_pid; |
3643 | ||
3644 | if (parse_pid(e, &new_main_pid) < 0) | |
3645 | log_unit_warning(u, "Failed to parse MAINPID= field in notification message, ignoring: %s", e); | |
3646 | else if (!s->main_pid_known || new_main_pid != s->main_pid) { | |
3647 | ||
3648 | r = service_is_suitable_main_pid(s, new_main_pid, LOG_WARNING); | |
3649 | if (r == 0) { | |
3650 | /* The new main PID is a bit suspicous, which is OK if the sender is privileged. */ | |
3651 | ||
3652 | if (ucred->uid == 0) { | |
3653 | 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); | |
3654 | r = 1; | |
3655 | } else | |
3656 | log_unit_debug(u, "New main PID "PID_FMT" does not belong to service, refusing.", new_main_pid); | |
3657 | } | |
3658 | if (r > 0) { | |
3659 | service_set_main_pid(s, new_main_pid); | |
cdc2af3e LP |
3660 | |
3661 | r = unit_watch_pid(UNIT(s), new_main_pid); | |
3662 | if (r < 0) | |
3663 | log_unit_warning_errno(UNIT(s), r, "Failed to watch new main PID "PID_FMT" for service: %m", new_main_pid); | |
3664 | ||
db256aab LP |
3665 | notify_dbus = true; |
3666 | } | |
8c47c732 LP |
3667 | } |
3668 | } | |
3669 | ||
cc2b7b11 LP |
3670 | /* Interpret READY=/STOPPING=/RELOADING=. Last one wins. */ |
3671 | STRV_FOREACH_BACKWARDS(i, tags) { | |
308d72dc | 3672 | |
cc2b7b11 LP |
3673 | if (streq(*i, "READY=1")) { |
3674 | s->notify_state = NOTIFY_READY; | |
308d72dc | 3675 | |
cc2b7b11 LP |
3676 | /* Type=notify services inform us about completed |
3677 | * initialization with READY=1 */ | |
3678 | if (s->type == SERVICE_NOTIFY && s->state == SERVICE_START) | |
3679 | service_enter_start_post(s); | |
308d72dc | 3680 | |
cc2b7b11 LP |
3681 | /* Sending READY=1 while we are reloading informs us |
3682 | * that the reloading is complete */ | |
3683 | if (s->state == SERVICE_RELOAD && s->control_pid == 0) | |
3684 | service_enter_running(s, SERVICE_SUCCESS); | |
308d72dc | 3685 | |
cc2b7b11 LP |
3686 | notify_dbus = true; |
3687 | break; | |
308d72dc | 3688 | |
cc2b7b11 LP |
3689 | } else if (streq(*i, "RELOADING=1")) { |
3690 | s->notify_state = NOTIFY_RELOADING; | |
308d72dc | 3691 | |
cc2b7b11 LP |
3692 | if (s->state == SERVICE_RUNNING) |
3693 | service_enter_reload_by_notify(s); | |
308d72dc | 3694 | |
cc2b7b11 LP |
3695 | notify_dbus = true; |
3696 | break; | |
308d72dc | 3697 | |
cc2b7b11 LP |
3698 | } else if (streq(*i, "STOPPING=1")) { |
3699 | s->notify_state = NOTIFY_STOPPING; | |
308d72dc | 3700 | |
cc2b7b11 LP |
3701 | if (s->state == SERVICE_RUNNING) |
3702 | service_enter_stop_by_notify(s); | |
308d72dc | 3703 | |
cc2b7b11 LP |
3704 | notify_dbus = true; |
3705 | break; | |
3706 | } | |
8c47c732 LP |
3707 | } |
3708 | ||
3709 | /* Interpret STATUS= */ | |
28849dba | 3710 | e = strv_find_startswith(tags, "STATUS="); |
7f110ff9 | 3711 | if (e) { |
28849dba | 3712 | _cleanup_free_ char *t = NULL; |
8c47c732 | 3713 | |
28849dba | 3714 | if (!isempty(e)) { |
3eac1bca LP |
3715 | /* Note that this size limit check is mostly paranoia: since the datagram size we are willing |
3716 | * to process is already limited to NOTIFY_BUFFER_MAX, this limit here should never be hit. */ | |
3717 | if (strlen(e) > STATUS_TEXT_MAX) | |
3718 | log_unit_warning(u, "Status message overly long (%zu > %u), ignoring.", strlen(e), STATUS_TEXT_MAX); | |
3719 | else if (!utf8_is_valid(e)) | |
3720 | log_unit_warning(u, "Status message in notification message is not UTF-8 clean, ignoring."); | |
28849dba | 3721 | else { |
28849dba LP |
3722 | t = strdup(e); |
3723 | if (!t) | |
3724 | log_oom(); | |
3a2776bc | 3725 | } |
28849dba | 3726 | } |
8c47c732 | 3727 | |
30b5275a | 3728 | if (!streq_ptr(s->status_text, t)) { |
3b319885 | 3729 | free_and_replace(s->status_text, t); |
30b5275a | 3730 | notify_dbus = true; |
28849dba | 3731 | } |
8c47c732 | 3732 | } |
842129f5 | 3733 | |
4774e357 | 3734 | /* Interpret ERRNO= */ |
28849dba | 3735 | e = strv_find_startswith(tags, "ERRNO="); |
4774e357 MAA |
3736 | if (e) { |
3737 | int status_errno; | |
3738 | ||
2fa40742 LP |
3739 | status_errno = parse_errno(e); |
3740 | if (status_errno < 0) | |
3741 | log_unit_warning_errno(u, status_errno, | |
5e1ee764 | 3742 | "Failed to parse ERRNO= field value '%s' in notification message: %m", e); |
2fa40742 LP |
3743 | else if (s->status_errno != status_errno) { |
3744 | s->status_errno = status_errno; | |
3745 | notify_dbus = true; | |
4774e357 MAA |
3746 | } |
3747 | } | |
3748 | ||
a327431b DB |
3749 | /* Interpret EXTEND_TIMEOUT= */ |
3750 | e = strv_find_startswith(tags, "EXTEND_TIMEOUT_USEC="); | |
3751 | if (e) { | |
3752 | usec_t extend_timeout_usec; | |
3753 | if (safe_atou64(e, &extend_timeout_usec) < 0) | |
3754 | log_unit_warning(u, "Failed to parse EXTEND_TIMEOUT_USEC=%s", e); | |
3755 | else | |
3756 | service_extend_timeout(s, extend_timeout_usec); | |
3757 | } | |
3758 | ||
6f285378 | 3759 | /* Interpret WATCHDOG= */ |
1f6b4113 | 3760 | if (strv_find(tags, "WATCHDOG=1")) |
842129f5 | 3761 | service_reset_watchdog(s); |
c4e2ceae | 3762 | |
c45d11cb LP |
3763 | e = strv_find_startswith(tags, "WATCHDOG_USEC="); |
3764 | if (e) { | |
3765 | usec_t watchdog_override_usec; | |
3766 | if (safe_atou64(e, &watchdog_override_usec) < 0) | |
3767 | log_unit_warning(u, "Failed to parse WATCHDOG_USEC=%s", e); | |
3768 | else | |
3769 | service_reset_watchdog_timeout(s, watchdog_override_usec); | |
3770 | } | |
3771 | ||
e78ee06d LP |
3772 | /* Process FD store messages. Either FDSTOREREMOVE=1 for removal, or FDSTORE=1 for addition. In both cases, |
3773 | * process FDNAME= for picking the file descriptor name to use. Note that FDNAME= is required when removing | |
3774 | * fds, but optional when pushing in new fds, for compatibility reasons. */ | |
3775 | if (strv_find(tags, "FDSTOREREMOVE=1")) { | |
3776 | const char *name; | |
3777 | ||
3778 | name = strv_find_startswith(tags, "FDNAME="); | |
3779 | if (!name || !fdname_is_valid(name)) | |
3780 | log_unit_warning(u, "FDSTOREREMOVE=1 requested, but no valid file descriptor name passed, ignoring."); | |
3781 | else | |
3782 | service_remove_fd_store(s, name); | |
3783 | ||
3784 | } else if (strv_find(tags, "FDSTORE=1")) { | |
8dd4c05b LP |
3785 | const char *name; |
3786 | ||
3787 | name = strv_find_startswith(tags, "FDNAME="); | |
3788 | if (name && !fdname_is_valid(name)) { | |
3789 | log_unit_warning(u, "Passed FDNAME= name is invalid, ignoring."); | |
3790 | name = NULL; | |
3791 | } | |
3792 | ||
e78ee06d | 3793 | (void) service_add_fd_store_set(s, fds, name); |
8dd4c05b | 3794 | } |
a354329f | 3795 | |
c4e2ceae | 3796 | /* Notify clients about changed status or main pid */ |
30b5275a LP |
3797 | if (notify_dbus) |
3798 | unit_add_to_dbus_queue(u); | |
8c47c732 LP |
3799 | } |
3800 | ||
7a7821c8 | 3801 | static int service_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 3802 | Service *s = SERVICE(u); |
7a7821c8 | 3803 | uint64_t t; |
68db7a3b ZJS |
3804 | int r; |
3805 | ||
3806 | if (!s->timer_event_source) | |
3807 | return 0; | |
3808 | ||
7a7821c8 | 3809 | r = sd_event_source_get_time(s->timer_event_source, &t); |
68db7a3b ZJS |
3810 | if (r < 0) |
3811 | return r; | |
7a7821c8 LP |
3812 | if (t == USEC_INFINITY) |
3813 | return 0; | |
68db7a3b | 3814 | |
7a7821c8 | 3815 | *timeout = t; |
68db7a3b ZJS |
3816 | return 1; |
3817 | } | |
3818 | ||
05e343b7 LP |
3819 | static void service_bus_name_owner_change( |
3820 | Unit *u, | |
3821 | const char *name, | |
3822 | const char *old_owner, | |
3823 | const char *new_owner) { | |
3824 | ||
3825 | Service *s = SERVICE(u); | |
718db961 | 3826 | int r; |
05e343b7 LP |
3827 | |
3828 | assert(s); | |
3829 | assert(name); | |
3830 | ||
3831 | assert(streq(s->bus_name, name)); | |
3832 | assert(old_owner || new_owner); | |
3833 | ||
3834 | if (old_owner && new_owner) | |
f2341e0a | 3835 | log_unit_debug(u, "D-Bus name %s changed owner from %s to %s", name, old_owner, new_owner); |
05e343b7 | 3836 | else if (old_owner) |
f2341e0a | 3837 | log_unit_debug(u, "D-Bus name %s no longer registered by %s", name, old_owner); |
05e343b7 | 3838 | else |
f2341e0a | 3839 | log_unit_debug(u, "D-Bus name %s now registered by %s", name, new_owner); |
05e343b7 LP |
3840 | |
3841 | s->bus_name_good = !!new_owner; | |
3842 | ||
d8ccf5fd DM |
3843 | /* Track the current owner, so we can reconstruct changes after a daemon reload */ |
3844 | r = free_and_strdup(&s->bus_name_owner, new_owner); | |
3845 | if (r < 0) { | |
3846 | log_unit_error_errno(u, r, "Unable to set new bus name owner %s: %m", new_owner); | |
3847 | return; | |
3848 | } | |
3849 | ||
05e343b7 LP |
3850 | if (s->type == SERVICE_DBUS) { |
3851 | ||
3852 | /* service_enter_running() will figure out what to | |
3853 | * do */ | |
3854 | if (s->state == SERVICE_RUNNING) | |
f42806df | 3855 | service_enter_running(s, SERVICE_SUCCESS); |
05e343b7 LP |
3856 | else if (s->state == SERVICE_START && new_owner) |
3857 | service_enter_start_post(s); | |
3858 | ||
3859 | } else if (new_owner && | |
3860 | s->main_pid <= 0 && | |
a6951a50 LP |
3861 | IN_SET(s->state, |
3862 | SERVICE_START, | |
3863 | SERVICE_START_POST, | |
3864 | SERVICE_RUNNING, | |
3865 | SERVICE_RELOAD)) { | |
05e343b7 | 3866 | |
4afd3348 | 3867 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; |
718db961 | 3868 | pid_t pid; |
05e343b7 | 3869 | |
718db961 | 3870 | /* Try to acquire PID from bus service */ |
05e343b7 | 3871 | |
056f95d0 | 3872 | r = sd_bus_get_name_creds(u->manager->api_bus, name, SD_BUS_CREDS_PID, &creds); |
5b12334d LP |
3873 | if (r >= 0) |
3874 | r = sd_bus_creds_get_pid(creds, &pid); | |
718db961 | 3875 | if (r >= 0) { |
7c102d60 | 3876 | log_unit_debug(u, "D-Bus name %s is now owned by process " PID_FMT, name, pid); |
05e343b7 | 3877 | |
718db961 LP |
3878 | service_set_main_pid(s, pid); |
3879 | unit_watch_pid(UNIT(s), pid); | |
3880 | } | |
7400b9d2 | 3881 | } |
05e343b7 LP |
3882 | } |
3883 | ||
16115b0a | 3884 | int service_set_socket_fd(Service *s, int fd, Socket *sock, bool selinux_context_net) { |
79a98c60 LP |
3885 | _cleanup_free_ char *peer = NULL; |
3886 | int r; | |
57020a3a | 3887 | |
4f2d528d LP |
3888 | assert(s); |
3889 | assert(fd >= 0); | |
3890 | ||
7f2fbbff LP |
3891 | /* This is called by the socket code when instantiating a new service for a stream socket and the socket needs |
3892 | * to be configured. We take ownership of the passed fd on success. */ | |
4f2d528d | 3893 | |
1124fe6f | 3894 | if (UNIT(s)->load_state != UNIT_LOADED) |
4f2d528d LP |
3895 | return -EINVAL; |
3896 | ||
3897 | if (s->socket_fd >= 0) | |
3898 | return -EBUSY; | |
3899 | ||
3900 | if (s->state != SERVICE_DEAD) | |
3901 | return -EAGAIN; | |
3902 | ||
366b7db4 | 3903 | if (getpeername_pretty(fd, true, &peer) >= 0) { |
79a98c60 LP |
3904 | |
3905 | if (UNIT(s)->description) { | |
3906 | _cleanup_free_ char *a; | |
3907 | ||
605405c6 | 3908 | a = strjoin(UNIT(s)->description, " (", peer, ")"); |
79a98c60 LP |
3909 | if (!a) |
3910 | return -ENOMEM; | |
3911 | ||
3912 | r = unit_set_description(UNIT(s), a); | |
3913 | } else | |
3914 | r = unit_set_description(UNIT(s), peer); | |
3915 | ||
3916 | if (r < 0) | |
3917 | return r; | |
3918 | } | |
3919 | ||
eef85c4a | 3920 | r = unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false, UNIT_DEPENDENCY_IMPLICIT); |
7f2fbbff LP |
3921 | if (r < 0) |
3922 | return r; | |
3923 | ||
4f2d528d | 3924 | s->socket_fd = fd; |
16115b0a | 3925 | s->socket_fd_selinux_context_net = selinux_context_net; |
6cf6bbc2 | 3926 | |
7f7d01ed | 3927 | unit_ref_set(&s->accept_socket, UNIT(s), UNIT(sock)); |
7f2fbbff | 3928 | return 0; |
4f2d528d LP |
3929 | } |
3930 | ||
fdf20a31 | 3931 | static void service_reset_failed(Unit *u) { |
5632e374 LP |
3932 | Service *s = SERVICE(u); |
3933 | ||
3934 | assert(s); | |
3935 | ||
fdf20a31 | 3936 | if (s->state == SERVICE_FAILED) |
5632e374 LP |
3937 | service_set_state(s, SERVICE_DEAD); |
3938 | ||
f42806df LP |
3939 | s->result = SERVICE_SUCCESS; |
3940 | s->reload_result = SERVICE_SUCCESS; | |
7a0019d3 LP |
3941 | s->n_restarts = 0; |
3942 | s->flush_n_restarts = false; | |
5632e374 LP |
3943 | } |
3944 | ||
718db961 | 3945 | static int service_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
8a0867d6 | 3946 | Service *s = SERVICE(u); |
41efeaec | 3947 | |
a6951a50 LP |
3948 | assert(s); |
3949 | ||
814cc562 | 3950 | return unit_kill_common(u, who, signo, s->main_pid, s->control_pid, error); |
8a0867d6 LP |
3951 | } |
3952 | ||
291d565a LP |
3953 | static int service_main_pid(Unit *u) { |
3954 | Service *s = SERVICE(u); | |
3955 | ||
3956 | assert(s); | |
3957 | ||
3958 | return s->main_pid; | |
3959 | } | |
3960 | ||
3961 | static int service_control_pid(Unit *u) { | |
3962 | Service *s = SERVICE(u); | |
3963 | ||
3964 | assert(s); | |
3965 | ||
3966 | return s->control_pid; | |
3967 | } | |
3968 | ||
bb2c7685 LP |
3969 | static bool service_needs_console(Unit *u) { |
3970 | Service *s = SERVICE(u); | |
3971 | ||
3972 | assert(s); | |
3973 | ||
3974 | /* We provide our own implementation of this here, instead of relying of the generic implementation | |
3975 | * unit_needs_console() provides, since we want to return false if we are in SERVICE_EXITED state. */ | |
3976 | ||
3977 | if (!exec_context_may_touch_console(&s->exec_context)) | |
3978 | return false; | |
3979 | ||
3980 | return IN_SET(s->state, | |
3981 | SERVICE_START_PRE, | |
3982 | SERVICE_START, | |
3983 | SERVICE_START_POST, | |
3984 | SERVICE_RUNNING, | |
3985 | SERVICE_RELOAD, | |
3986 | SERVICE_STOP, | |
c87700a1 | 3987 | SERVICE_STOP_WATCHDOG, |
bb2c7685 LP |
3988 | SERVICE_STOP_SIGTERM, |
3989 | SERVICE_STOP_SIGKILL, | |
3990 | SERVICE_STOP_POST, | |
3991 | SERVICE_FINAL_SIGTERM, | |
3992 | SERVICE_FINAL_SIGKILL); | |
3993 | } | |
3994 | ||
94f04347 | 3995 | static const char* const service_restart_table[_SERVICE_RESTART_MAX] = { |
525ee6f4 LP |
3996 | [SERVICE_RESTART_NO] = "no", |
3997 | [SERVICE_RESTART_ON_SUCCESS] = "on-success", | |
50caaedb | 3998 | [SERVICE_RESTART_ON_FAILURE] = "on-failure", |
6cfe2fde | 3999 | [SERVICE_RESTART_ON_ABNORMAL] = "on-abnormal", |
dc99a976 | 4000 | [SERVICE_RESTART_ON_WATCHDOG] = "on-watchdog", |
50caaedb | 4001 | [SERVICE_RESTART_ON_ABORT] = "on-abort", |
6cfe2fde | 4002 | [SERVICE_RESTART_ALWAYS] = "always", |
94f04347 LP |
4003 | }; |
4004 | ||
4005 | DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart); | |
4006 | ||
4007 | static const char* const service_type_table[_SERVICE_TYPE_MAX] = { | |
94f04347 | 4008 | [SERVICE_SIMPLE] = "simple", |
0d624a78 | 4009 | [SERVICE_FORKING] = "forking", |
34e9ba66 | 4010 | [SERVICE_ONESHOT] = "oneshot", |
8c47c732 | 4011 | [SERVICE_DBUS] = "dbus", |
f2b68789 | 4012 | [SERVICE_NOTIFY] = "notify", |
5686391b LP |
4013 | [SERVICE_IDLE] = "idle", |
4014 | [SERVICE_EXEC] = "exec", | |
94f04347 LP |
4015 | }; |
4016 | ||
4017 | DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType); | |
4018 | ||
e537352b | 4019 | static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = { |
94f04347 LP |
4020 | [SERVICE_EXEC_START_PRE] = "ExecStartPre", |
4021 | [SERVICE_EXEC_START] = "ExecStart", | |
4022 | [SERVICE_EXEC_START_POST] = "ExecStartPost", | |
4023 | [SERVICE_EXEC_RELOAD] = "ExecReload", | |
4024 | [SERVICE_EXEC_STOP] = "ExecStop", | |
4025 | [SERVICE_EXEC_STOP_POST] = "ExecStopPost", | |
4026 | }; | |
4027 | ||
4028 | DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand); | |
4029 | ||
308d72dc LP |
4030 | static const char* const notify_state_table[_NOTIFY_STATE_MAX] = { |
4031 | [NOTIFY_UNKNOWN] = "unknown", | |
4032 | [NOTIFY_READY] = "ready", | |
4033 | [NOTIFY_RELOADING] = "reloading", | |
4034 | [NOTIFY_STOPPING] = "stopping", | |
4035 | }; | |
4036 | ||
4037 | DEFINE_STRING_TABLE_LOOKUP(notify_state, NotifyState); | |
4038 | ||
f42806df LP |
4039 | static const char* const service_result_table[_SERVICE_RESULT_MAX] = { |
4040 | [SERVICE_SUCCESS] = "success", | |
4041 | [SERVICE_FAILURE_RESOURCES] = "resources", | |
c35755fb | 4042 | [SERVICE_FAILURE_PROTOCOL] = "protocol", |
f42806df LP |
4043 | [SERVICE_FAILURE_TIMEOUT] = "timeout", |
4044 | [SERVICE_FAILURE_EXIT_CODE] = "exit-code", | |
4045 | [SERVICE_FAILURE_SIGNAL] = "signal", | |
bb242b7b | 4046 | [SERVICE_FAILURE_CORE_DUMP] = "core-dump", |
8d1b002a | 4047 | [SERVICE_FAILURE_WATCHDOG] = "watchdog", |
07299350 | 4048 | [SERVICE_FAILURE_START_LIMIT_HIT] = "start-limit-hit", |
f42806df LP |
4049 | }; |
4050 | ||
4051 | DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult); | |
4052 | ||
87f0e418 | 4053 | const UnitVTable service_vtable = { |
7d17cfbc | 4054 | .object_size = sizeof(Service), |
718db961 LP |
4055 | .exec_context_offset = offsetof(Service, exec_context), |
4056 | .cgroup_context_offset = offsetof(Service, cgroup_context), | |
4057 | .kill_context_offset = offsetof(Service, kill_context), | |
613b411c | 4058 | .exec_runtime_offset = offsetof(Service, exec_runtime), |
29206d46 | 4059 | .dynamic_creds_offset = offsetof(Service, dynamic_creds), |
3ef63c31 | 4060 | |
f975e971 LP |
4061 | .sections = |
4062 | "Unit\0" | |
4063 | "Service\0" | |
4064 | "Install\0", | |
4ad49000 | 4065 | .private_section = "Service", |
71645aca | 4066 | |
1d9cc876 LP |
4067 | .can_transient = true, |
4068 | .can_delegate = true, | |
4069 | ||
034c6ed7 LP |
4070 | .init = service_init, |
4071 | .done = service_done, | |
a16e1123 | 4072 | .load = service_load, |
a354329f | 4073 | .release_resources = service_release_resources, |
a16e1123 LP |
4074 | |
4075 | .coldplug = service_coldplug, | |
034c6ed7 | 4076 | |
5cb5a6ff LP |
4077 | .dump = service_dump, |
4078 | ||
4079 | .start = service_start, | |
4080 | .stop = service_stop, | |
4081 | .reload = service_reload, | |
4082 | ||
034c6ed7 LP |
4083 | .can_reload = service_can_reload, |
4084 | ||
8a0867d6 LP |
4085 | .kill = service_kill, |
4086 | ||
a16e1123 LP |
4087 | .serialize = service_serialize, |
4088 | .deserialize_item = service_deserialize_item, | |
4089 | ||
5cb5a6ff | 4090 | .active_state = service_active_state, |
10a94420 | 4091 | .sub_state_to_string = service_sub_state_to_string, |
5cb5a6ff | 4092 | |
deb4e708 MK |
4093 | .will_restart = service_will_restart, |
4094 | ||
f2f725e5 | 4095 | .may_gc = service_may_gc, |
701cc384 | 4096 | |
034c6ed7 | 4097 | .sigchld_event = service_sigchld_event, |
2c4104f0 | 4098 | |
fdf20a31 | 4099 | .reset_failed = service_reset_failed, |
5632e374 | 4100 | |
4ad49000 | 4101 | .notify_cgroup_empty = service_notify_cgroup_empty_event, |
8c47c732 | 4102 | .notify_message = service_notify_message, |
8e274523 | 4103 | |
291d565a LP |
4104 | .main_pid = service_main_pid, |
4105 | .control_pid = service_control_pid, | |
4106 | ||
05e343b7 | 4107 | .bus_name_owner_change = service_bus_name_owner_change, |
05e343b7 | 4108 | |
718db961 | 4109 | .bus_vtable = bus_service_vtable, |
74c964d3 LP |
4110 | .bus_set_property = bus_service_set_property, |
4111 | .bus_commit_properties = bus_service_commit_properties, | |
4139c1b2 | 4112 | |
68db7a3b | 4113 | .get_timeout = service_get_timeout, |
bb2c7685 | 4114 | .needs_console = service_needs_console, |
718db961 | 4115 | |
c6918296 MS |
4116 | .status_message_formats = { |
4117 | .starting_stopping = { | |
4118 | [0] = "Starting %s...", | |
4119 | [1] = "Stopping %s...", | |
4120 | }, | |
4121 | .finished_start_job = { | |
4122 | [JOB_DONE] = "Started %s.", | |
4123 | [JOB_FAILED] = "Failed to start %s.", | |
c6918296 MS |
4124 | }, |
4125 | .finished_stop_job = { | |
4126 | [JOB_DONE] = "Stopped %s.", | |
4127 | [JOB_FAILED] = "Stopped (with error) %s.", | |
c6918296 MS |
4128 | }, |
4129 | }, | |
5cb5a6ff | 4130 | }; |