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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, |
db2cb23b | 51 | [SERVICE_STOP_SIGABRT] = 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, | |
db2cb23b | 72 | [SERVICE_STOP_SIGABRT] = 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 | ||
718db961 LP |
82 | static int service_dispatch_io(sd_event_source *source, int fd, uint32_t events, void *userdata); |
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); | |
85 | ||
842129f5 | 86 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f); |
308d72dc | 87 | static void service_enter_reload_by_notify(Service *s); |
842129f5 | 88 | |
a16e1123 LP |
89 | static void service_init(Unit *u) { |
90 | Service *s = SERVICE(u); | |
91 | ||
92 | assert(u); | |
ac155bb8 | 93 | assert(u->load_state == UNIT_STUB); |
a16e1123 | 94 | |
1f19a534 OS |
95 | s->timeout_start_usec = u->manager->default_timeout_start_usec; |
96 | s->timeout_stop_usec = u->manager->default_timeout_stop_usec; | |
97 | s->restart_usec = u->manager->default_restart_usec; | |
36c16a7c | 98 | s->runtime_max_usec = USEC_INFINITY; |
0b86feac | 99 | s->type = _SERVICE_TYPE_INVALID; |
a16e1123 | 100 | s->socket_fd = -1; |
a34ceba6 | 101 | s->stdin_fd = s->stdout_fd = s->stderr_fd = -1; |
3185a36b | 102 | s->guess_main_pid = true; |
a16e1123 | 103 | |
a16e1123 | 104 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; |
00f5ad93 LP |
105 | |
106 | s->exec_context.keyring_mode = MANAGER_IS_SYSTEM(u->manager) ? | |
107 | EXEC_KEYRING_PRIVATE : EXEC_KEYRING_INHERIT; | |
a16e1123 LP |
108 | } |
109 | ||
5e94833f LP |
110 | static void service_unwatch_control_pid(Service *s) { |
111 | assert(s); | |
112 | ||
113 | if (s->control_pid <= 0) | |
114 | return; | |
115 | ||
116 | unit_unwatch_pid(UNIT(s), s->control_pid); | |
117 | s->control_pid = 0; | |
118 | } | |
119 | ||
120 | static void service_unwatch_main_pid(Service *s) { | |
121 | assert(s); | |
122 | ||
123 | if (s->main_pid <= 0) | |
124 | return; | |
125 | ||
126 | unit_unwatch_pid(UNIT(s), s->main_pid); | |
127 | s->main_pid = 0; | |
128 | } | |
129 | ||
3e52541e MS |
130 | static void service_unwatch_pid_file(Service *s) { |
131 | if (!s->pid_file_pathspec) | |
132 | return; | |
133 | ||
f2341e0a | 134 | log_unit_debug(UNIT(s), "Stopping watch for PID file %s", s->pid_file_pathspec->path); |
718db961 | 135 | path_spec_unwatch(s->pid_file_pathspec); |
3e52541e | 136 | path_spec_done(s->pid_file_pathspec); |
a1e58e8e | 137 | s->pid_file_pathspec = mfree(s->pid_file_pathspec); |
3e52541e MS |
138 | } |
139 | ||
5925dd3c | 140 | static int service_set_main_pid(Service *s, pid_t pid) { |
e55224ca LP |
141 | pid_t ppid; |
142 | ||
5925dd3c LP |
143 | assert(s); |
144 | ||
145 | if (pid <= 1) | |
146 | return -EINVAL; | |
147 | ||
df0ff127 | 148 | if (pid == getpid_cached()) |
5925dd3c LP |
149 | return -EINVAL; |
150 | ||
7400b9d2 LP |
151 | if (s->main_pid == pid && s->main_pid_known) |
152 | return 0; | |
153 | ||
154 | if (s->main_pid != pid) { | |
155 | service_unwatch_main_pid(s); | |
156 | exec_status_start(&s->main_exec_status, pid); | |
157 | } | |
41efeaec | 158 | |
6dfa5494 LP |
159 | s->main_pid = pid; |
160 | s->main_pid_known = true; | |
161 | ||
df0ff127 | 162 | if (get_process_ppid(pid, &ppid) >= 0 && ppid != getpid_cached()) { |
f2341e0a | 163 | 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 |
164 | s->main_pid_alien = true; |
165 | } else | |
166 | s->main_pid_alien = false; | |
5925dd3c LP |
167 | |
168 | return 0; | |
169 | } | |
170 | ||
3e7a1f50 | 171 | void service_close_socket_fd(Service *s) { |
4f2d528d LP |
172 | assert(s); |
173 | ||
5cc3985e | 174 | /* Undo the effect of service_set_socket_fd(). */ |
4f2d528d | 175 | |
5cc3985e | 176 | s->socket_fd = asynchronous_close(s->socket_fd); |
6cf6bbc2 | 177 | |
5cc3985e LP |
178 | if (UNIT_ISSET(s->accept_socket)) { |
179 | socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket))); | |
180 | unit_ref_unset(&s->accept_socket); | |
181 | } | |
6cf6bbc2 LP |
182 | } |
183 | ||
a6927d7f MO |
184 | static void service_stop_watchdog(Service *s) { |
185 | assert(s); | |
186 | ||
718db961 | 187 | s->watchdog_event_source = sd_event_source_unref(s->watchdog_event_source); |
842129f5 | 188 | s->watchdog_timestamp = DUAL_TIMESTAMP_NULL; |
a6927d7f MO |
189 | } |
190 | ||
2787d83c M |
191 | static usec_t service_get_watchdog_usec(Service *s) { |
192 | assert(s); | |
193 | ||
194 | if (s->watchdog_override_enable) | |
195 | return s->watchdog_override_usec; | |
196 | else | |
197 | return s->watchdog_usec; | |
198 | } | |
199 | ||
842129f5 | 200 | static void service_start_watchdog(Service *s) { |
bb242b7b | 201 | int r; |
2787d83c | 202 | usec_t watchdog_usec; |
bb242b7b MO |
203 | |
204 | assert(s); | |
205 | ||
2787d83c | 206 | watchdog_usec = service_get_watchdog_usec(s); |
4c701096 | 207 | if (IN_SET(watchdog_usec, 0, USEC_INFINITY)) |
bb242b7b MO |
208 | return; |
209 | ||
718db961 | 210 | if (s->watchdog_event_source) { |
2787d83c | 211 | r = sd_event_source_set_time(s->watchdog_event_source, usec_add(s->watchdog_timestamp.monotonic, watchdog_usec)); |
718db961 | 212 | if (r < 0) { |
f2341e0a | 213 | log_unit_warning_errno(UNIT(s), r, "Failed to reset watchdog timer: %m"); |
718db961 LP |
214 | return; |
215 | } | |
216 | ||
842129f5 | 217 | r = sd_event_source_set_enabled(s->watchdog_event_source, SD_EVENT_ONESHOT); |
c4ef3317 | 218 | } else { |
6a0f1f6d LP |
219 | r = sd_event_add_time( |
220 | UNIT(s)->manager->event, | |
221 | &s->watchdog_event_source, | |
222 | CLOCK_MONOTONIC, | |
2787d83c | 223 | usec_add(s->watchdog_timestamp.monotonic, watchdog_usec), 0, |
6a0f1f6d | 224 | service_dispatch_watchdog, s); |
c4ef3317 | 225 | if (r < 0) { |
f2341e0a | 226 | log_unit_warning_errno(UNIT(s), r, "Failed to add watchdog timer: %m"); |
c4ef3317 LP |
227 | return; |
228 | } | |
229 | ||
7dfbe2e3 TG |
230 | (void) sd_event_source_set_description(s->watchdog_event_source, "service-watchdog"); |
231 | ||
c4ef3317 LP |
232 | /* Let's process everything else which might be a sign |
233 | * of living before we consider a service died. */ | |
234 | r = sd_event_source_set_priority(s->watchdog_event_source, SD_EVENT_PRIORITY_IDLE); | |
235 | } | |
718db961 | 236 | |
bb242b7b | 237 | if (r < 0) |
f2341e0a | 238 | log_unit_warning_errno(UNIT(s), r, "Failed to install watchdog timer: %m"); |
bb242b7b MO |
239 | } |
240 | ||
a327431b DB |
241 | static void service_extend_timeout(Service *s, usec_t extend_timeout_usec) { |
242 | assert(s); | |
243 | ||
244 | if (s->timer_event_source) { | |
245 | uint64_t current = 0, extended = 0; | |
246 | int r; | |
247 | ||
248 | if (IN_SET(extend_timeout_usec, 0, USEC_INFINITY)) | |
249 | return; | |
250 | ||
251 | extended = usec_add(now(CLOCK_MONOTONIC), extend_timeout_usec); | |
252 | ||
253 | r = sd_event_source_get_time(s->timer_event_source, ¤t); | |
254 | if (r < 0) | |
255 | log_unit_error_errno(UNIT(s), r, "Failed to retrieve timeout timer: %m"); | |
256 | else if (extended > current) { | |
257 | r = sd_event_source_set_time(s->timer_event_source, extended); | |
258 | if (r < 0) | |
259 | log_unit_warning_errno(UNIT(s), r, "Failed to set timeout timer: %m"); | |
260 | } | |
261 | ||
262 | if (s->watchdog_event_source) { | |
263 | /* extend watchdog if necessary. We've asked for an extended timeout so we | |
264 | * shouldn't expect a watchdog timeout in the interval in between */ | |
265 | r = sd_event_source_get_time(s->watchdog_event_source, ¤t); | |
266 | if (r < 0) { | |
267 | log_unit_error_errno(UNIT(s), r, "Failed to retrieve watchdog timer: %m"); | |
268 | return; | |
269 | } | |
270 | ||
271 | if (extended > current) { | |
272 | r = sd_event_source_set_time(s->watchdog_event_source, extended); | |
273 | if (r < 0) | |
274 | log_unit_warning_errno(UNIT(s), r, "Failed to set watchdog timer: %m"); | |
275 | } | |
276 | } | |
277 | } | |
278 | } | |
279 | ||
a6927d7f MO |
280 | static void service_reset_watchdog(Service *s) { |
281 | assert(s); | |
282 | ||
283 | dual_timestamp_get(&s->watchdog_timestamp); | |
842129f5 | 284 | service_start_watchdog(s); |
a6927d7f MO |
285 | } |
286 | ||
2787d83c M |
287 | static void service_reset_watchdog_timeout(Service *s, usec_t watchdog_override_usec) { |
288 | assert(s); | |
289 | ||
290 | s->watchdog_override_enable = true; | |
291 | s->watchdog_override_usec = watchdog_override_usec; | |
292 | service_reset_watchdog(s); | |
293 | ||
294 | log_unit_debug(UNIT(s), "watchdog_usec="USEC_FMT, s->watchdog_usec); | |
295 | log_unit_debug(UNIT(s), "watchdog_override_usec="USEC_FMT, s->watchdog_override_usec); | |
296 | } | |
297 | ||
a354329f LP |
298 | static void service_fd_store_unlink(ServiceFDStore *fs) { |
299 | ||
300 | if (!fs) | |
301 | return; | |
302 | ||
303 | if (fs->service) { | |
304 | assert(fs->service->n_fd_store > 0); | |
305 | LIST_REMOVE(fd_store, fs->service->fd_store, fs); | |
306 | fs->service->n_fd_store--; | |
307 | } | |
308 | ||
309 | if (fs->event_source) { | |
310 | sd_event_source_set_enabled(fs->event_source, SD_EVENT_OFF); | |
311 | sd_event_source_unref(fs->event_source); | |
312 | } | |
313 | ||
8dd4c05b | 314 | free(fs->fdname); |
a354329f LP |
315 | safe_close(fs->fd); |
316 | free(fs); | |
317 | } | |
318 | ||
f0bfbfac ZJS |
319 | static void service_release_fd_store(Service *s) { |
320 | assert(s); | |
321 | ||
7eb2a8a1 LP |
322 | if (s->n_keep_fd_store > 0) |
323 | return; | |
324 | ||
f0bfbfac ZJS |
325 | log_unit_debug(UNIT(s), "Releasing all stored fds"); |
326 | while (s->fd_store) | |
327 | service_fd_store_unlink(s->fd_store); | |
328 | ||
329 | assert(s->n_fd_store == 0); | |
330 | } | |
331 | ||
7eb2a8a1 | 332 | static void service_release_resources(Unit *u) { |
a354329f LP |
333 | Service *s = SERVICE(u); |
334 | ||
335 | assert(s); | |
336 | ||
a34ceba6 | 337 | if (!s->fd_store && s->stdin_fd < 0 && s->stdout_fd < 0 && s->stderr_fd < 0) |
a354329f LP |
338 | return; |
339 | ||
f0bfbfac | 340 | log_unit_debug(u, "Releasing resources."); |
a354329f | 341 | |
a34ceba6 LP |
342 | s->stdin_fd = safe_close(s->stdin_fd); |
343 | s->stdout_fd = safe_close(s->stdout_fd); | |
344 | s->stderr_fd = safe_close(s->stderr_fd); | |
345 | ||
7eb2a8a1 | 346 | service_release_fd_store(s); |
a354329f LP |
347 | } |
348 | ||
87f0e418 LP |
349 | static void service_done(Unit *u) { |
350 | Service *s = SERVICE(u); | |
44d8db9e LP |
351 | |
352 | assert(s); | |
353 | ||
a1e58e8e LP |
354 | s->pid_file = mfree(s->pid_file); |
355 | s->status_text = mfree(s->status_text); | |
efe6e7d3 | 356 | |
e8a565cb | 357 | s->exec_runtime = exec_runtime_unref(s->exec_runtime, false); |
e537352b | 358 | exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); |
44d8db9e | 359 | s->control_command = NULL; |
867b3b7d | 360 | s->main_command = NULL; |
44d8db9e | 361 | |
29206d46 LP |
362 | dynamic_creds_unref(&s->dynamic_creds); |
363 | ||
37520c1b LP |
364 | exit_status_set_free(&s->restart_prevent_status); |
365 | exit_status_set_free(&s->restart_force_status); | |
366 | exit_status_set_free(&s->success_status); | |
96342de6 | 367 | |
44d8db9e LP |
368 | /* This will leak a process, but at least no memory or any of |
369 | * our resources */ | |
5e94833f LP |
370 | service_unwatch_main_pid(s); |
371 | service_unwatch_control_pid(s); | |
3e52541e | 372 | service_unwatch_pid_file(s); |
44d8db9e | 373 | |
05e343b7 | 374 | if (s->bus_name) { |
ac155bb8 | 375 | unit_unwatch_bus_name(u, s->bus_name); |
a1e58e8e | 376 | s->bus_name = mfree(s->bus_name); |
05e343b7 LP |
377 | } |
378 | ||
d8ccf5fd DM |
379 | s->bus_name_owner = mfree(s->bus_name_owner); |
380 | ||
064c5938 ZJS |
381 | s->usb_function_descriptors = mfree(s->usb_function_descriptors); |
382 | s->usb_function_strings = mfree(s->usb_function_strings); | |
383 | ||
4f2d528d | 384 | service_close_socket_fd(s); |
9d565427 | 385 | s->peer = socket_peer_unref(s->peer); |
4f2d528d | 386 | |
57020a3a | 387 | unit_ref_unset(&s->accept_socket); |
f976f3f6 | 388 | |
bb242b7b MO |
389 | service_stop_watchdog(s); |
390 | ||
718db961 | 391 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
a354329f | 392 | |
7eb2a8a1 | 393 | service_release_resources(u); |
718db961 LP |
394 | } |
395 | ||
2339fc93 LP |
396 | static int on_fd_store_io(sd_event_source *e, int fd, uint32_t revents, void *userdata) { |
397 | ServiceFDStore *fs = userdata; | |
398 | ||
399 | assert(e); | |
400 | assert(fs); | |
401 | ||
402 | /* If we get either EPOLLHUP or EPOLLERR, it's time to remove this entry from the fd store */ | |
16f70d63 ZJS |
403 | log_unit_debug(UNIT(fs->service), |
404 | "Received %s on stored fd %d (%s), closing.", | |
405 | revents & EPOLLERR ? "EPOLLERR" : "EPOLLHUP", | |
406 | fs->fd, strna(fs->fdname)); | |
2339fc93 LP |
407 | service_fd_store_unlink(fs); |
408 | return 0; | |
409 | } | |
410 | ||
8dd4c05b | 411 | static int service_add_fd_store(Service *s, int fd, const char *name) { |
2339fc93 LP |
412 | ServiceFDStore *fs; |
413 | int r; | |
414 | ||
9021ff17 ZJS |
415 | /* fd is always consumed if we return >= 0 */ |
416 | ||
2339fc93 LP |
417 | assert(s); |
418 | assert(fd >= 0); | |
419 | ||
420 | if (s->n_fd_store >= s->n_fd_store_max) | |
b0924635 ZJS |
421 | return -EXFULL; /* Our store is full. |
422 | * Use this errno rather than E[NM]FILE to distinguish from | |
423 | * the case where systemd itself hits the file limit. */ | |
2339fc93 LP |
424 | |
425 | LIST_FOREACH(fd_store, fs, s->fd_store) { | |
426 | r = same_fd(fs->fd, fd); | |
427 | if (r < 0) | |
428 | return r; | |
429 | if (r > 0) { | |
2339fc93 | 430 | safe_close(fd); |
9021ff17 | 431 | return 0; /* fd already included */ |
2339fc93 LP |
432 | } |
433 | } | |
434 | ||
435 | fs = new0(ServiceFDStore, 1); | |
436 | if (!fs) | |
437 | return -ENOMEM; | |
438 | ||
439 | fs->fd = fd; | |
440 | fs->service = s; | |
8dd4c05b | 441 | fs->fdname = strdup(name ?: "stored"); |
17dec0f7 | 442 | if (!fs->fdname) { |
443 | free(fs); | |
8dd4c05b | 444 | return -ENOMEM; |
17dec0f7 | 445 | } |
2339fc93 LP |
446 | |
447 | r = sd_event_add_io(UNIT(s)->manager->event, &fs->event_source, fd, 0, on_fd_store_io, fs); | |
3ceb72e5 | 448 | if (r < 0 && r != -EPERM) { /* EPERM indicates fds that aren't pollable, which is OK */ |
8dd4c05b | 449 | free(fs->fdname); |
2339fc93 LP |
450 | free(fs); |
451 | return r; | |
3ceb72e5 LP |
452 | } else if (r >= 0) |
453 | (void) sd_event_source_set_description(fs->event_source, "service-fd-store"); | |
7dfbe2e3 | 454 | |
2339fc93 LP |
455 | LIST_PREPEND(fd_store, s->fd_store, fs); |
456 | s->n_fd_store++; | |
457 | ||
9021ff17 | 458 | return 1; /* fd newly stored */ |
2339fc93 LP |
459 | } |
460 | ||
8dd4c05b | 461 | static int service_add_fd_store_set(Service *s, FDSet *fds, const char *name) { |
2339fc93 LP |
462 | int r; |
463 | ||
464 | assert(s); | |
465 | ||
b0924635 | 466 | while (fdset_size(fds) > 0) { |
2339fc93 LP |
467 | _cleanup_close_ int fd = -1; |
468 | ||
469 | fd = fdset_steal_first(fds); | |
470 | if (fd < 0) | |
471 | break; | |
472 | ||
8dd4c05b | 473 | r = service_add_fd_store(s, fd, name); |
b0924635 ZJS |
474 | if (r == -EXFULL) |
475 | return log_unit_warning_errno(UNIT(s), r, | |
476 | "Cannot store more fds than FileDescriptorStoreMax=%u, closing remaining.", | |
477 | s->n_fd_store_max); | |
2339fc93 | 478 | if (r < 0) |
b0924635 | 479 | return log_unit_error_errno(UNIT(s), r, "Failed to add fd to store: %m"); |
9021ff17 | 480 | if (r > 0) |
16f70d63 | 481 | log_unit_debug(UNIT(s), "Added fd %u (%s) to fd store.", fd, strna(name)); |
9021ff17 | 482 | fd = -1; |
2339fc93 LP |
483 | } |
484 | ||
2339fc93 LP |
485 | return 0; |
486 | } | |
487 | ||
e78ee06d LP |
488 | static void service_remove_fd_store(Service *s, const char *name) { |
489 | ServiceFDStore *fs, *n; | |
490 | ||
491 | assert(s); | |
492 | assert(name); | |
493 | ||
494 | LIST_FOREACH_SAFE(fd_store, fs, n, s->fd_store) { | |
495 | if (!streq(fs->fdname, name)) | |
496 | continue; | |
497 | ||
498 | log_unit_debug(UNIT(s), "Got explicit request to remove fd %i (%s), closing.", fs->fd, name); | |
499 | service_fd_store_unlink(fs); | |
500 | } | |
501 | } | |
502 | ||
718db961 LP |
503 | static int service_arm_timer(Service *s, usec_t usec) { |
504 | int r; | |
505 | ||
506 | assert(s); | |
507 | ||
718db961 | 508 | if (s->timer_event_source) { |
36c16a7c | 509 | r = sd_event_source_set_time(s->timer_event_source, usec); |
718db961 LP |
510 | if (r < 0) |
511 | return r; | |
512 | ||
513 | return sd_event_source_set_enabled(s->timer_event_source, SD_EVENT_ONESHOT); | |
514 | } | |
515 | ||
36c16a7c LP |
516 | if (usec == USEC_INFINITY) |
517 | return 0; | |
518 | ||
7dfbe2e3 | 519 | r = sd_event_add_time( |
6a0f1f6d LP |
520 | UNIT(s)->manager->event, |
521 | &s->timer_event_source, | |
522 | CLOCK_MONOTONIC, | |
36c16a7c | 523 | usec, 0, |
6a0f1f6d | 524 | service_dispatch_timer, s); |
7dfbe2e3 TG |
525 | if (r < 0) |
526 | return r; | |
527 | ||
528 | (void) sd_event_source_set_description(s->timer_event_source, "service-timer"); | |
529 | ||
530 | return 0; | |
44d8db9e LP |
531 | } |
532 | ||
243b1432 LP |
533 | static int service_verify(Service *s) { |
534 | assert(s); | |
535 | ||
1124fe6f | 536 | if (UNIT(s)->load_state != UNIT_LOADED) |
243b1432 LP |
537 | return 0; |
538 | ||
96fb8242 | 539 | if (!s->exec_command[SERVICE_EXEC_START] && !s->exec_command[SERVICE_EXEC_STOP]) { |
f2341e0a | 540 | log_unit_error(UNIT(s), "Service lacks both ExecStart= and ExecStop= setting. Refusing."); |
6f40aa45 | 541 | return -ENOEXEC; |
243b1432 LP |
542 | } |
543 | ||
96fb8242 | 544 | if (s->type != SERVICE_ONESHOT && !s->exec_command[SERVICE_EXEC_START]) { |
f2341e0a | 545 | log_unit_error(UNIT(s), "Service has no ExecStart= setting, which is only allowed for Type=oneshot services. Refusing."); |
6f40aa45 | 546 | return -ENOEXEC; |
96fb8242 LP |
547 | } |
548 | ||
549 | if (!s->remain_after_exit && !s->exec_command[SERVICE_EXEC_START]) { | |
f2341e0a | 550 | log_unit_error(UNIT(s), "Service has no ExecStart= setting, which is only allowed for RemainAfterExit=yes services. Refusing."); |
6f40aa45 | 551 | return -ENOEXEC; |
96fb8242 LP |
552 | } |
553 | ||
554 | if (s->type != SERVICE_ONESHOT && s->exec_command[SERVICE_EXEC_START]->command_next) { | |
f2341e0a | 555 | log_unit_error(UNIT(s), "Service has more than one ExecStart= setting, which is only allowed for Type=oneshot services. Refusing."); |
6f40aa45 | 556 | return -ENOEXEC; |
6cf6bbc2 LP |
557 | } |
558 | ||
b0693d30 | 559 | if (s->type == SERVICE_ONESHOT && s->restart != SERVICE_RESTART_NO) { |
f2341e0a | 560 | log_unit_error(UNIT(s), "Service has Restart= setting other than no, which isn't allowed for Type=oneshot services. Refusing."); |
6f40aa45 | 561 | return -ENOEXEC; |
37520c1b LP |
562 | } |
563 | ||
55ebf98c | 564 | if (s->type == SERVICE_ONESHOT && !exit_status_set_is_empty(&s->restart_force_status)) { |
f2341e0a | 565 | log_unit_error(UNIT(s), "Service has RestartForceStatus= set, which isn't allowed for Type=oneshot services. Refusing."); |
6f40aa45 | 566 | return -ENOEXEC; |
b0693d30 MW |
567 | } |
568 | ||
05e343b7 | 569 | if (s->type == SERVICE_DBUS && !s->bus_name) { |
f2341e0a | 570 | log_unit_error(UNIT(s), "Service is of type D-Bus but no D-Bus service name has been specified. Refusing."); |
6f40aa45 | 571 | return -ENOEXEC; |
4d0e5dbd LP |
572 | } |
573 | ||
7e2668c6 | 574 | if (s->bus_name && s->type != SERVICE_DBUS) |
f2341e0a | 575 | log_unit_warning(UNIT(s), "Service has a D-Bus service name specified, but is not of type dbus. Ignoring."); |
7e2668c6 | 576 | |
3742095b | 577 | if (s->exec_context.pam_name && !IN_SET(s->kill_context.kill_mode, KILL_CONTROL_GROUP, KILL_MIXED)) { |
f2341e0a | 578 | log_unit_error(UNIT(s), "Service has PAM enabled. Kill mode must be set to 'control-group' or 'mixed'. Refusing."); |
6f40aa45 | 579 | return -ENOEXEC; |
05e343b7 LP |
580 | } |
581 | ||
6b7e5923 PS |
582 | if (s->usb_function_descriptors && !s->usb_function_strings) |
583 | log_unit_warning(UNIT(s), "Service has USBFunctionDescriptors= setting, but no USBFunctionStrings=. Ignoring."); | |
584 | ||
585 | if (!s->usb_function_descriptors && s->usb_function_strings) | |
586 | log_unit_warning(UNIT(s), "Service has USBFunctionStrings= setting, but no USBFunctionDescriptors=. Ignoring."); | |
587 | ||
36c16a7c LP |
588 | if (s->runtime_max_usec != USEC_INFINITY && s->type == SERVICE_ONESHOT) |
589 | log_unit_warning(UNIT(s), "MaxRuntimeSec= has no effect in combination with Type=oneshot. Ignoring."); | |
590 | ||
243b1432 LP |
591 | return 0; |
592 | } | |
593 | ||
a40eb732 LP |
594 | static int service_add_default_dependencies(Service *s) { |
595 | int r; | |
596 | ||
597 | assert(s); | |
598 | ||
45f06b34 LP |
599 | if (!UNIT(s)->default_dependencies) |
600 | return 0; | |
601 | ||
a40eb732 LP |
602 | /* Add a number of automatic dependencies useful for the |
603 | * majority of services. */ | |
604 | ||
463d0d15 | 605 | if (MANAGER_IS_SYSTEM(UNIT(s)->manager)) { |
cb4c247d LP |
606 | /* First, pull in the really early boot stuff, and |
607 | * require it, so that we fail if we can't acquire | |
608 | * it. */ | |
609 | ||
eef85c4a | 610 | r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, NULL, true, UNIT_DEPENDENCY_DEFAULT); |
cb4c247d LP |
611 | if (r < 0) |
612 | return r; | |
613 | } else { | |
614 | ||
615 | /* In the --user instance there's no sysinit.target, | |
616 | * in that case require basic.target instead. */ | |
617 | ||
eef85c4a | 618 | r = unit_add_dependency_by_name(UNIT(s), UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true, UNIT_DEPENDENCY_DEFAULT); |
cb4c247d LP |
619 | if (r < 0) |
620 | return r; | |
621 | } | |
622 | ||
623 | /* Second, if the rest of the base system is in the same | |
624 | * transaction, order us after it, but do not pull it in or | |
625 | * even require it. */ | |
eef85c4a | 626 | r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_BASIC_TARGET, NULL, true, UNIT_DEPENDENCY_DEFAULT); |
fccd44ec KS |
627 | if (r < 0) |
628 | return r; | |
a40eb732 | 629 | |
cb4c247d | 630 | /* Third, add us in for normal shutdown. */ |
eef85c4a | 631 | return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true, UNIT_DEPENDENCY_DEFAULT); |
a40eb732 LP |
632 | } |
633 | ||
4dfc092a LP |
634 | static void service_fix_output(Service *s) { |
635 | assert(s); | |
636 | ||
08f3be7a LP |
637 | /* If nothing has been explicitly configured, patch default output in. If input is socket/tty we avoid this |
638 | * however, since in that case we want output to default to the same place as we read input from. */ | |
4dfc092a LP |
639 | |
640 | if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT && | |
641 | s->exec_context.std_output == EXEC_OUTPUT_INHERIT && | |
642 | s->exec_context.std_input == EXEC_INPUT_NULL) | |
1124fe6f | 643 | s->exec_context.std_error = UNIT(s)->manager->default_std_error; |
4dfc092a LP |
644 | |
645 | if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT && | |
646 | s->exec_context.std_input == EXEC_INPUT_NULL) | |
1124fe6f | 647 | s->exec_context.std_output = UNIT(s)->manager->default_std_output; |
08f3be7a LP |
648 | |
649 | if (s->exec_context.std_input == EXEC_INPUT_NULL && | |
650 | s->exec_context.stdin_data_size > 0) | |
651 | s->exec_context.std_input = EXEC_INPUT_DATA; | |
4dfc092a LP |
652 | } |
653 | ||
45f06b34 LP |
654 | static int service_setup_bus_name(Service *s) { |
655 | int r; | |
656 | ||
657 | assert(s); | |
658 | ||
659 | if (!s->bus_name) | |
660 | return 0; | |
661 | ||
eef85c4a | 662 | r = unit_add_dependency_by_name(UNIT(s), UNIT_REQUIRES, SPECIAL_DBUS_SOCKET, NULL, true, UNIT_DEPENDENCY_FILE); |
222953e8 DR |
663 | if (r < 0) |
664 | return log_unit_error_errno(UNIT(s), r, "Failed to add dependency on " SPECIAL_DBUS_SOCKET ": %m"); | |
45f06b34 | 665 | |
a132bef0 | 666 | /* We always want to be ordered against dbus.socket if both are in the transaction. */ |
eef85c4a | 667 | r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_DBUS_SOCKET, NULL, true, UNIT_DEPENDENCY_FILE); |
45f06b34 | 668 | if (r < 0) |
92bed462 | 669 | return log_unit_error_errno(UNIT(s), r, "Failed to add dependency on " SPECIAL_DBUS_SOCKET ": %m"); |
45f06b34 LP |
670 | |
671 | r = unit_watch_bus_name(UNIT(s), s->bus_name); | |
672 | if (r == -EEXIST) | |
673 | return log_unit_error_errno(UNIT(s), r, "Two services allocated for the same bus name %s, refusing operation.", s->bus_name); | |
674 | if (r < 0) | |
675 | return log_unit_error_errno(UNIT(s), r, "Cannot watch bus name %s: %m", s->bus_name); | |
676 | ||
677 | return 0; | |
678 | } | |
679 | ||
8545f7ce LP |
680 | static int service_add_extras(Service *s) { |
681 | int r; | |
682 | ||
683 | assert(s); | |
684 | ||
685 | if (s->type == _SERVICE_TYPE_INVALID) { | |
686 | /* Figure out a type automatically */ | |
687 | if (s->bus_name) | |
688 | s->type = SERVICE_DBUS; | |
689 | else if (s->exec_command[SERVICE_EXEC_START]) | |
690 | s->type = SERVICE_SIMPLE; | |
691 | else | |
692 | s->type = SERVICE_ONESHOT; | |
693 | } | |
694 | ||
695 | /* Oneshot services have disabled start timeout by default */ | |
696 | if (s->type == SERVICE_ONESHOT && !s->start_timeout_defined) | |
36c16a7c | 697 | s->timeout_start_usec = USEC_INFINITY; |
8545f7ce LP |
698 | |
699 | service_fix_output(s); | |
700 | ||
701 | r = unit_patch_contexts(UNIT(s)); | |
702 | if (r < 0) | |
703 | return r; | |
704 | ||
705 | r = unit_add_exec_dependencies(UNIT(s), &s->exec_context); | |
706 | if (r < 0) | |
707 | return r; | |
708 | ||
d79200e2 | 709 | r = unit_set_default_slice(UNIT(s)); |
8545f7ce LP |
710 | if (r < 0) |
711 | return r; | |
712 | ||
4330dc03 AJ |
713 | /* If the service needs the notify socket, let's enable it automatically. */ |
714 | if (s->notify_access == NOTIFY_NONE && | |
715 | (s->type == SERVICE_NOTIFY || s->watchdog_usec > 0 || s->n_fd_store_max > 0)) | |
8545f7ce LP |
716 | s->notify_access = NOTIFY_MAIN; |
717 | ||
45f06b34 LP |
718 | r = service_add_default_dependencies(s); |
719 | if (r < 0) | |
720 | return r; | |
8545f7ce | 721 | |
45f06b34 LP |
722 | r = service_setup_bus_name(s); |
723 | if (r < 0) | |
724 | return r; | |
8545f7ce LP |
725 | |
726 | return 0; | |
727 | } | |
728 | ||
e537352b | 729 | static int service_load(Unit *u) { |
e537352b | 730 | Service *s = SERVICE(u); |
8bb2d17d | 731 | int r; |
e537352b LP |
732 | |
733 | assert(s); | |
1e2e8133 | 734 | |
5cb5a6ff | 735 | /* Load a .service file */ |
c2756a68 LP |
736 | r = unit_load_fragment(u); |
737 | if (r < 0) | |
5cb5a6ff LP |
738 | return r; |
739 | ||
23a177ef | 740 | /* Still nothing found? Then let's give up */ |
ac155bb8 | 741 | if (u->load_state == UNIT_STUB) |
23a177ef | 742 | return -ENOENT; |
034c6ed7 | 743 | |
23a177ef | 744 | /* This is a new unit? Then let's add in some extras */ |
ac155bb8 | 745 | if (u->load_state == UNIT_LOADED) { |
c2756a68 LP |
746 | |
747 | /* We were able to load something, then let's add in | |
748 | * the dropin directories. */ | |
749 | r = unit_load_dropin(u); | |
750 | if (r < 0) | |
751 | return r; | |
752 | ||
8545f7ce LP |
753 | /* This is a new unit? Then let's add in some |
754 | * extras */ | |
755 | r = service_add_extras(s); | |
598459ce LP |
756 | if (r < 0) |
757 | return r; | |
8e274523 LP |
758 | } |
759 | ||
243b1432 | 760 | return service_verify(s); |
034c6ed7 LP |
761 | } |
762 | ||
87f0e418 | 763 | static void service_dump(Unit *u, FILE *f, const char *prefix) { |
f2e18ef1 YW |
764 | char buf_restart[FORMAT_TIMESPAN_MAX], buf_start[FORMAT_TIMESPAN_MAX], buf_stop[FORMAT_TIMESPAN_MAX]; |
765 | char buf_runtime[FORMAT_TIMESPAN_MAX], buf_watchdog[FORMAT_TIMESPAN_MAX]; | |
5cb5a6ff | 766 | ServiceExecCommand c; |
87f0e418 | 767 | Service *s = SERVICE(u); |
47be870b | 768 | const char *prefix2; |
5cb5a6ff LP |
769 | |
770 | assert(s); | |
771 | ||
4c940960 | 772 | prefix = strempty(prefix); |
63c372cb | 773 | prefix2 = strjoina(prefix, "\t"); |
44d8db9e | 774 | |
5cb5a6ff | 775 | fprintf(f, |
81a2b7ce | 776 | "%sService State: %s\n" |
f42806df LP |
777 | "%sResult: %s\n" |
778 | "%sReload Result: %s\n" | |
81a2b7ce | 779 | "%sPermissionsStartOnly: %s\n" |
8e274523 | 780 | "%sRootDirectoryStartOnly: %s\n" |
02ee865a | 781 | "%sRemainAfterExit: %s\n" |
3185a36b | 782 | "%sGuessMainPID: %s\n" |
c952c6ec | 783 | "%sType: %s\n" |
2cf3143a | 784 | "%sRestart: %s\n" |
308d72dc LP |
785 | "%sNotifyAccess: %s\n" |
786 | "%sNotifyState: %s\n", | |
81a2b7ce | 787 | prefix, service_state_to_string(s->state), |
f42806df LP |
788 | prefix, service_result_to_string(s->result), |
789 | prefix, service_result_to_string(s->reload_result), | |
81a2b7ce | 790 | prefix, yes_no(s->permissions_start_only), |
8e274523 | 791 | prefix, yes_no(s->root_directory_start_only), |
02ee865a | 792 | prefix, yes_no(s->remain_after_exit), |
3185a36b | 793 | prefix, yes_no(s->guess_main_pid), |
c952c6ec | 794 | prefix, service_type_to_string(s->type), |
2cf3143a | 795 | prefix, service_restart_to_string(s->restart), |
308d72dc LP |
796 | prefix, notify_access_to_string(s->notify_access), |
797 | prefix, notify_state_to_string(s->notify_state)); | |
5cb5a6ff | 798 | |
70123e68 LP |
799 | if (s->control_pid > 0) |
800 | fprintf(f, | |
ccd06097 ZJS |
801 | "%sControl PID: "PID_FMT"\n", |
802 | prefix, s->control_pid); | |
70123e68 LP |
803 | |
804 | if (s->main_pid > 0) | |
805 | fprintf(f, | |
ccd06097 | 806 | "%sMain PID: "PID_FMT"\n" |
6dfa5494 LP |
807 | "%sMain PID Known: %s\n" |
808 | "%sMain PID Alien: %s\n", | |
ccd06097 | 809 | prefix, s->main_pid, |
6dfa5494 LP |
810 | prefix, yes_no(s->main_pid_known), |
811 | prefix, yes_no(s->main_pid_alien)); | |
70123e68 | 812 | |
034c6ed7 LP |
813 | if (s->pid_file) |
814 | fprintf(f, | |
815 | "%sPIDFile: %s\n", | |
816 | prefix, s->pid_file); | |
817 | ||
05e343b7 LP |
818 | if (s->bus_name) |
819 | fprintf(f, | |
820 | "%sBusName: %s\n" | |
821 | "%sBus Name Good: %s\n", | |
822 | prefix, s->bus_name, | |
823 | prefix, yes_no(s->bus_name_good)); | |
824 | ||
9dfb64f8 ZJS |
825 | if (UNIT_ISSET(s->accept_socket)) |
826 | fprintf(f, | |
827 | "%sAccept Socket: %s\n", | |
828 | prefix, UNIT_DEREF(s->accept_socket)->id); | |
829 | ||
c9d41699 YW |
830 | fprintf(f, |
831 | "%sRestartSec: %s\n" | |
832 | "%sTimeoutStartSec: %s\n" | |
833 | "%sTimeoutStopSec: %s\n" | |
834 | "%sRuntimeMaxSec: %s\n" | |
835 | "%sWatchdogSec: %s\n", | |
836 | prefix, format_timespan(buf_restart, sizeof(buf_restart), s->restart_usec, USEC_PER_SEC), | |
837 | prefix, format_timespan(buf_start, sizeof(buf_start), s->timeout_start_usec, USEC_PER_SEC), | |
838 | prefix, format_timespan(buf_stop, sizeof(buf_stop), s->timeout_stop_usec, USEC_PER_SEC), | |
839 | prefix, format_timespan(buf_runtime, sizeof(buf_runtime), s->runtime_max_usec, USEC_PER_SEC), | |
840 | prefix, format_timespan(buf_watchdog, sizeof(buf_watchdog), s->watchdog_usec, USEC_PER_SEC)); | |
841 | ||
4819ff03 | 842 | kill_context_dump(&s->kill_context, f, prefix); |
5cb5a6ff LP |
843 | exec_context_dump(&s->exec_context, f, prefix); |
844 | ||
e537352b | 845 | for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) { |
5cb5a6ff | 846 | |
44d8db9e LP |
847 | if (!s->exec_command[c]) |
848 | continue; | |
849 | ||
40d50879 | 850 | fprintf(f, "%s-> %s:\n", |
94f04347 | 851 | prefix, service_exec_command_to_string(c)); |
44d8db9e LP |
852 | |
853 | exec_command_dump_list(s->exec_command[c], f, prefix2); | |
5cb5a6ff | 854 | } |
44d8db9e | 855 | |
8c47c732 LP |
856 | if (s->status_text) |
857 | fprintf(f, "%sStatus Text: %s\n", | |
858 | prefix, s->status_text); | |
a354329f | 859 | |
ece174c5 | 860 | if (s->n_fd_store_max > 0) |
a354329f LP |
861 | fprintf(f, |
862 | "%sFile Descriptor Store Max: %u\n" | |
da6053d0 | 863 | "%sFile Descriptor Store Current: %zu\n", |
a354329f LP |
864 | prefix, s->n_fd_store_max, |
865 | prefix, s->n_fd_store); | |
18f573aa LP |
866 | |
867 | cgroup_context_dump(&s->cgroup_context, f, prefix); | |
5cb5a6ff LP |
868 | } |
869 | ||
db256aab LP |
870 | static int service_is_suitable_main_pid(Service *s, pid_t pid, int prio) { |
871 | Unit *owner; | |
872 | ||
873 | assert(s); | |
874 | assert(pid_is_valid(pid)); | |
875 | ||
876 | /* Checks whether the specified PID is suitable as main PID for this service. returns negative if not, 0 if the | |
877 | * PID is questionnable but should be accepted if the source of configuration is trusted. > 0 if the PID is | |
878 | * good */ | |
879 | ||
880 | if (pid == getpid_cached() || pid == 1) { | |
881 | log_unit_full(UNIT(s), prio, 0, "New main PID "PID_FMT" is the manager, refusing.", pid); | |
882 | return -EPERM; | |
883 | } | |
884 | ||
885 | if (pid == s->control_pid) { | |
886 | log_unit_full(UNIT(s), prio, 0, "New main PID "PID_FMT" is the control process, refusing.", pid); | |
887 | return -EPERM; | |
888 | } | |
889 | ||
890 | if (!pid_is_alive(pid)) { | |
891 | log_unit_full(UNIT(s), prio, 0, "New main PID "PID_FMT" does not exist or is a zombie.", pid); | |
892 | return -ESRCH; | |
893 | } | |
894 | ||
895 | owner = manager_get_unit_by_pid(UNIT(s)->manager, pid); | |
896 | if (owner == UNIT(s)) { | |
897 | log_unit_debug(UNIT(s), "New main PID "PID_FMT" belongs to service, we are happy.", pid); | |
898 | return 1; /* Yay, it's definitely a good PID */ | |
899 | } | |
900 | ||
901 | return 0; /* Hmm it's a suspicious PID, let's accept it if configuration source is trusted */ | |
902 | } | |
903 | ||
c5419d42 | 904 | static int service_load_pid_file(Service *s, bool may_warn) { |
db256aab | 905 | char procfs[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; |
73969ab6 | 906 | bool questionable_pid_file = false; |
7fd1b19b | 907 | _cleanup_free_ char *k = NULL; |
db256aab LP |
908 | _cleanup_close_ int fd = -1; |
909 | int r, prio; | |
5925dd3c | 910 | pid_t pid; |
034c6ed7 LP |
911 | |
912 | assert(s); | |
913 | ||
034c6ed7 | 914 | if (!s->pid_file) |
13230d5d | 915 | return -ENOENT; |
034c6ed7 | 916 | |
db256aab LP |
917 | prio = may_warn ? LOG_INFO : LOG_DEBUG; |
918 | ||
919 | fd = chase_symlinks(s->pid_file, NULL, CHASE_OPEN|CHASE_SAFE, NULL); | |
73969ab6 LP |
920 | if (fd == -EPERM) { |
921 | 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); | |
922 | ||
923 | questionable_pid_file = true; | |
924 | ||
925 | fd = chase_symlinks(s->pid_file, NULL, CHASE_OPEN, NULL); | |
926 | } | |
db256aab LP |
927 | if (fd < 0) |
928 | 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)); | |
929 | ||
930 | /* 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. */ | |
931 | xsprintf(procfs, "/proc/self/fd/%i", fd); | |
932 | r = read_one_line_file(procfs, &k); | |
933 | if (r < 0) | |
934 | 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 | 935 | |
5925dd3c | 936 | r = parse_pid(k, &pid); |
db256aab LP |
937 | if (r < 0) |
938 | return log_unit_full(UNIT(s), prio, r, "Failed to parse PID from file %s: %m", s->pid_file); | |
939 | ||
940 | if (s->main_pid_known && pid == s->main_pid) | |
941 | return 0; | |
942 | ||
943 | r = service_is_suitable_main_pid(s, pid, prio); | |
944 | if (r < 0) | |
5925dd3c | 945 | return r; |
db256aab LP |
946 | if (r == 0) { |
947 | struct stat st; | |
406eaf93 | 948 | |
73969ab6 LP |
949 | if (questionable_pid_file) { |
950 | log_unit_error(UNIT(s), "Refusing to accept PID outside of service control group, acquired through unsafe symlink chain: %s", s->pid_file); | |
951 | return -EPERM; | |
952 | } | |
953 | ||
db256aab LP |
954 | /* Hmm, it's not clear if the new main PID is safe. Let's allow this if the PID file is owned by root */ |
955 | ||
956 | if (fstat(fd, &st) < 0) | |
957 | return log_unit_error_errno(UNIT(s), errno, "Failed to fstat() PID file O_PATH fd: %m"); | |
958 | ||
959 | if (st.st_uid != 0) { | |
960 | 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); | |
961 | return -EPERM; | |
962 | } | |
963 | ||
964 | 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 |
965 | } |
966 | ||
db01f8b3 | 967 | if (s->main_pid_known) { |
f2341e0a | 968 | log_unit_debug(UNIT(s), "Main PID changing: "PID_FMT" -> "PID_FMT, s->main_pid, pid); |
8bb2d17d | 969 | |
db01f8b3 MS |
970 | service_unwatch_main_pid(s); |
971 | s->main_pid_known = false; | |
3a111838 | 972 | } else |
f2341e0a | 973 | log_unit_debug(UNIT(s), "Main PID loaded: "PID_FMT, pid); |
db01f8b3 | 974 | |
117dcc57 ZJS |
975 | r = service_set_main_pid(s, pid); |
976 | if (r < 0) | |
16f6025e LP |
977 | return r; |
978 | ||
117dcc57 | 979 | r = unit_watch_pid(UNIT(s), pid); |
e8b509d3 LP |
980 | if (r < 0) /* FIXME: we need to do something here */ |
981 | return log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" for service: %m", pid); | |
034c6ed7 | 982 | |
db256aab | 983 | return 1; |
034c6ed7 LP |
984 | } |
985 | ||
783e05d6 | 986 | static void service_search_main_pid(Service *s) { |
efdb0237 | 987 | pid_t pid = 0; |
4fbf50b3 LP |
988 | int r; |
989 | ||
990 | assert(s); | |
991 | ||
3185a36b LP |
992 | /* If we know it anyway, don't ever fallback to unreliable |
993 | * heuristics */ | |
4fbf50b3 | 994 | if (s->main_pid_known) |
783e05d6 | 995 | return; |
4fbf50b3 | 996 | |
3185a36b | 997 | if (!s->guess_main_pid) |
783e05d6 | 998 | return; |
3185a36b | 999 | |
4fbf50b3 LP |
1000 | assert(s->main_pid <= 0); |
1001 | ||
783e05d6 ZJS |
1002 | if (unit_search_main_pid(UNIT(s), &pid) < 0) |
1003 | return; | |
4fbf50b3 | 1004 | |
f2341e0a | 1005 | log_unit_debug(UNIT(s), "Main PID guessed: "PID_FMT, pid); |
783e05d6 ZJS |
1006 | if (service_set_main_pid(s, pid) < 0) |
1007 | return; | |
4fbf50b3 | 1008 | |
117dcc57 | 1009 | r = unit_watch_pid(UNIT(s), pid); |
783e05d6 | 1010 | if (r < 0) |
4fbf50b3 | 1011 | /* FIXME: we need to do something here */ |
f2341e0a | 1012 | log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" from: %m", pid); |
4fbf50b3 LP |
1013 | } |
1014 | ||
034c6ed7 LP |
1015 | static void service_set_state(Service *s, ServiceState state) { |
1016 | ServiceState old_state; | |
e056b01d | 1017 | const UnitActiveState *table; |
842129f5 | 1018 | |
5cb5a6ff LP |
1019 | assert(s); |
1020 | ||
e056b01d LP |
1021 | table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
1022 | ||
034c6ed7 | 1023 | old_state = s->state; |
5cb5a6ff | 1024 | s->state = state; |
034c6ed7 | 1025 | |
3a111838 MS |
1026 | service_unwatch_pid_file(s); |
1027 | ||
842129f5 LP |
1028 | if (!IN_SET(state, |
1029 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
36c16a7c | 1030 | SERVICE_RUNNING, |
842129f5 | 1031 | SERVICE_RELOAD, |
57614eb1 | 1032 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
842129f5 LP |
1033 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL, |
1034 | SERVICE_AUTO_RESTART)) | |
718db961 | 1035 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
034c6ed7 | 1036 | |
842129f5 LP |
1037 | if (!IN_SET(state, |
1038 | SERVICE_START, SERVICE_START_POST, | |
1039 | SERVICE_RUNNING, SERVICE_RELOAD, | |
57614eb1 | 1040 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf108e55 | 1041 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
5e94833f | 1042 | service_unwatch_main_pid(s); |
867b3b7d LP |
1043 | s->main_command = NULL; |
1044 | } | |
034c6ed7 | 1045 | |
842129f5 LP |
1046 | if (!IN_SET(state, |
1047 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
1048 | SERVICE_RELOAD, | |
57614eb1 | 1049 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
842129f5 | 1050 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
5e94833f | 1051 | service_unwatch_control_pid(s); |
034c6ed7 | 1052 | s->control_command = NULL; |
a16e1123 | 1053 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; |
e537352b | 1054 | } |
034c6ed7 | 1055 | |
50be4f4a | 1056 | if (IN_SET(state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART)) { |
a911bb9a | 1057 | unit_unwatch_all_pids(UNIT(s)); |
50be4f4a LP |
1058 | unit_dequeue_rewatch_pids(UNIT(s)); |
1059 | } | |
a911bb9a | 1060 | |
842129f5 LP |
1061 | if (!IN_SET(state, |
1062 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
1063 | SERVICE_RUNNING, SERVICE_RELOAD, | |
57614eb1 LP |
1064 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
1065 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL) && | |
5cc3985e | 1066 | !(state == SERVICE_DEAD && UNIT(s)->job)) |
4f2d528d LP |
1067 | service_close_socket_fd(s); |
1068 | ||
7596e9e1 | 1069 | if (!IN_SET(state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
a6927d7f MO |
1070 | service_stop_watchdog(s); |
1071 | ||
f6023656 LP |
1072 | /* For the inactive states unit_notify() will trim the cgroup, |
1073 | * but for exit we have to do that ourselves... */ | |
2c289ea8 | 1074 | if (state == SERVICE_EXITED && !MANAGER_IS_RELOADING(UNIT(s)->manager)) |
efdb0237 | 1075 | unit_prune_cgroup(UNIT(s)); |
f6023656 | 1076 | |
e537352b | 1077 | if (old_state != state) |
f2341e0a | 1078 | log_unit_debug(UNIT(s), "Changed %s -> %s", service_state_to_string(old_state), service_state_to_string(state)); |
acbb0225 | 1079 | |
2ad2e41a LP |
1080 | unit_notify(UNIT(s), table[old_state], table[state], |
1081 | (s->reload_result == SERVICE_SUCCESS ? 0 : UNIT_NOTIFY_RELOAD_FAILURE) | | |
1082 | (s->will_auto_restart ? UNIT_NOTIFY_WILL_AUTO_RESTART : 0)); | |
034c6ed7 LP |
1083 | } |
1084 | ||
36c16a7c LP |
1085 | static usec_t service_coldplug_timeout(Service *s) { |
1086 | assert(s); | |
1087 | ||
1088 | switch (s->deserialized_state) { | |
1089 | ||
1090 | case SERVICE_START_PRE: | |
1091 | case SERVICE_START: | |
1092 | case SERVICE_START_POST: | |
1093 | case SERVICE_RELOAD: | |
1094 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->timeout_start_usec); | |
1095 | ||
1096 | case SERVICE_RUNNING: | |
1097 | return usec_add(UNIT(s)->active_enter_timestamp.monotonic, s->runtime_max_usec); | |
1098 | ||
1099 | case SERVICE_STOP: | |
1100 | case SERVICE_STOP_SIGABRT: | |
1101 | case SERVICE_STOP_SIGTERM: | |
1102 | case SERVICE_STOP_SIGKILL: | |
1103 | case SERVICE_STOP_POST: | |
1104 | case SERVICE_FINAL_SIGTERM: | |
1105 | case SERVICE_FINAL_SIGKILL: | |
1106 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->timeout_stop_usec); | |
1107 | ||
1108 | case SERVICE_AUTO_RESTART: | |
1109 | return usec_add(UNIT(s)->inactive_enter_timestamp.monotonic, s->restart_usec); | |
1110 | ||
1111 | default: | |
1112 | return USEC_INFINITY; | |
1113 | } | |
1114 | } | |
1115 | ||
be847e82 | 1116 | static int service_coldplug(Unit *u) { |
a16e1123 LP |
1117 | Service *s = SERVICE(u); |
1118 | int r; | |
1119 | ||
1120 | assert(s); | |
1121 | assert(s->state == SERVICE_DEAD); | |
1122 | ||
930d2838 LP |
1123 | if (s->deserialized_state == s->state) |
1124 | return 0; | |
6c12b52e | 1125 | |
36c16a7c LP |
1126 | r = service_arm_timer(s, service_coldplug_timeout(s)); |
1127 | if (r < 0) | |
1128 | return r; | |
a911bb9a | 1129 | |
930d2838 LP |
1130 | if (s->main_pid > 0 && |
1131 | pid_is_unwaited(s->main_pid) && | |
9acac212 | 1132 | (IN_SET(s->deserialized_state, |
930d2838 LP |
1133 | SERVICE_START, SERVICE_START_POST, |
1134 | SERVICE_RUNNING, SERVICE_RELOAD, | |
1135 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, | |
1136 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL))) { | |
1137 | r = unit_watch_pid(UNIT(s), s->main_pid); | |
1138 | if (r < 0) | |
1139 | return r; | |
1140 | } | |
bb242b7b | 1141 | |
930d2838 LP |
1142 | if (s->control_pid > 0 && |
1143 | pid_is_unwaited(s->control_pid) && | |
1144 | IN_SET(s->deserialized_state, | |
1145 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
1146 | SERVICE_RELOAD, | |
1147 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, | |
1148 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { | |
1149 | r = unit_watch_pid(UNIT(s), s->control_pid); | |
1150 | if (r < 0) | |
1151 | return r; | |
a16e1123 | 1152 | } |
92c1622e | 1153 | |
e8a565cb | 1154 | if (!IN_SET(s->deserialized_state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART)) { |
50be4f4a | 1155 | (void) unit_enqueue_rewatch_pids(u); |
29206d46 | 1156 | (void) unit_setup_dynamic_creds(u); |
e8a565cb YW |
1157 | (void) unit_setup_exec_runtime(u); |
1158 | } | |
29206d46 | 1159 | |
50be4f4a LP |
1160 | if (IN_SET(s->deserialized_state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
1161 | service_start_watchdog(s); | |
1162 | ||
3ebcd323 ZJS |
1163 | if (UNIT_ISSET(s->accept_socket)) { |
1164 | Socket* socket = SOCKET(UNIT_DEREF(s->accept_socket)); | |
1165 | ||
1166 | if (socket->max_connections_per_source > 0) { | |
1167 | SocketPeer *peer; | |
1168 | ||
1169 | /* Make a best-effort attempt at bumping the connection count */ | |
1170 | if (socket_acquire_peer(socket, s->socket_fd, &peer) > 0) { | |
1171 | socket_peer_unref(s->peer); | |
1172 | s->peer = peer; | |
1173 | } | |
1174 | } | |
1175 | } | |
1176 | ||
930d2838 | 1177 | service_set_state(s, s->deserialized_state); |
a16e1123 LP |
1178 | return 0; |
1179 | } | |
1180 | ||
4c47affc FB |
1181 | static int service_collect_fds(Service *s, |
1182 | int **fds, | |
1183 | char ***fd_names, | |
1184 | unsigned *n_storage_fds, | |
1185 | unsigned *n_socket_fds) { | |
1186 | ||
8dd4c05b | 1187 | _cleanup_strv_free_ char **rfd_names = NULL; |
a354329f | 1188 | _cleanup_free_ int *rfds = NULL; |
4c47affc FB |
1189 | unsigned rn_socket_fds = 0, rn_storage_fds = 0; |
1190 | int r; | |
44d8db9e LP |
1191 | |
1192 | assert(s); | |
1193 | assert(fds); | |
8dd4c05b | 1194 | assert(fd_names); |
9b141911 | 1195 | assert(n_socket_fds); |
44d8db9e | 1196 | |
8dd4c05b | 1197 | if (s->socket_fd >= 0) { |
6cf6bbc2 | 1198 | |
8dd4c05b | 1199 | /* Pass the per-connection socket */ |
57020a3a | 1200 | |
8dd4c05b LP |
1201 | rfds = new(int, 1); |
1202 | if (!rfds) | |
1203 | return -ENOMEM; | |
1204 | rfds[0] = s->socket_fd; | |
57020a3a | 1205 | |
8dd4c05b LP |
1206 | rfd_names = strv_new("connection", NULL); |
1207 | if (!rfd_names) | |
1208 | return -ENOMEM; | |
44d8db9e | 1209 | |
4c47affc | 1210 | rn_socket_fds = 1; |
8dd4c05b LP |
1211 | } else { |
1212 | Iterator i; | |
eef85c4a | 1213 | void *v; |
8dd4c05b | 1214 | Unit *u; |
44d8db9e | 1215 | |
8dd4c05b | 1216 | /* Pass all our configured sockets for singleton services */ |
44d8db9e | 1217 | |
eef85c4a | 1218 | HASHMAP_FOREACH_KEY(v, u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) { |
8dd4c05b LP |
1219 | _cleanup_free_ int *cfds = NULL; |
1220 | Socket *sock; | |
1221 | int cn_fds; | |
44d8db9e | 1222 | |
8dd4c05b LP |
1223 | if (u->type != UNIT_SOCKET) |
1224 | continue; | |
44d8db9e | 1225 | |
8dd4c05b | 1226 | sock = SOCKET(u); |
a354329f | 1227 | |
8dd4c05b LP |
1228 | cn_fds = socket_collect_fds(sock, &cfds); |
1229 | if (cn_fds < 0) | |
1230 | return cn_fds; | |
44d8db9e | 1231 | |
8dd4c05b LP |
1232 | if (cn_fds <= 0) |
1233 | continue; | |
79c7626d | 1234 | |
8dd4c05b | 1235 | if (!rfds) { |
1cc6c93a | 1236 | rfds = TAKE_PTR(cfds); |
4c47affc | 1237 | rn_socket_fds = cn_fds; |
8dd4c05b LP |
1238 | } else { |
1239 | int *t; | |
1240 | ||
62d74c78 | 1241 | t = reallocarray(rfds, rn_socket_fds + cn_fds, sizeof(int)); |
8dd4c05b LP |
1242 | if (!t) |
1243 | return -ENOMEM; | |
1244 | ||
4c47affc | 1245 | memcpy(t + rn_socket_fds, cfds, cn_fds * sizeof(int)); |
8dd4c05b LP |
1246 | |
1247 | rfds = t; | |
4c47affc | 1248 | rn_socket_fds += cn_fds; |
8dd4c05b LP |
1249 | } |
1250 | ||
1251 | r = strv_extend_n(&rfd_names, socket_fdname(sock), cn_fds); | |
1252 | if (r < 0) | |
1253 | return r; | |
44d8db9e LP |
1254 | } |
1255 | } | |
1256 | ||
a354329f LP |
1257 | if (s->n_fd_store > 0) { |
1258 | ServiceFDStore *fs; | |
4c47affc | 1259 | unsigned n_fds; |
8dd4c05b | 1260 | char **nl; |
a354329f LP |
1261 | int *t; |
1262 | ||
62d74c78 | 1263 | t = reallocarray(rfds, rn_socket_fds + s->n_fd_store, sizeof(int)); |
a354329f LP |
1264 | if (!t) |
1265 | return -ENOMEM; | |
1266 | ||
1267 | rfds = t; | |
8dd4c05b | 1268 | |
62d74c78 | 1269 | nl = reallocarray(rfd_names, rn_socket_fds + s->n_fd_store + 1, sizeof(char *)); |
8dd4c05b LP |
1270 | if (!nl) |
1271 | return -ENOMEM; | |
1272 | ||
1273 | rfd_names = nl; | |
4c47affc | 1274 | n_fds = rn_socket_fds; |
8dd4c05b LP |
1275 | |
1276 | LIST_FOREACH(fd_store, fs, s->fd_store) { | |
4c47affc FB |
1277 | rfds[n_fds] = fs->fd; |
1278 | rfd_names[n_fds] = strdup(strempty(fs->fdname)); | |
1279 | if (!rfd_names[n_fds]) | |
8dd4c05b LP |
1280 | return -ENOMEM; |
1281 | ||
4c47affc FB |
1282 | rn_storage_fds++; |
1283 | n_fds++; | |
8dd4c05b LP |
1284 | } |
1285 | ||
4c47affc | 1286 | rfd_names[n_fds] = NULL; |
a354329f LP |
1287 | } |
1288 | ||
1cc6c93a YW |
1289 | *fds = TAKE_PTR(rfds); |
1290 | *fd_names = TAKE_PTR(rfd_names); | |
9b141911 | 1291 | *n_socket_fds = rn_socket_fds; |
4c47affc | 1292 | *n_storage_fds = rn_storage_fds; |
3e33402a | 1293 | |
4c47affc | 1294 | return 0; |
44d8db9e LP |
1295 | } |
1296 | ||
6375bd20 JW |
1297 | static bool service_exec_needs_notify_socket(Service *s, ExecFlags flags) { |
1298 | assert(s); | |
1299 | ||
1300 | /* Notifications are accepted depending on the process and | |
1301 | * the access setting of the service: | |
1302 | * process: \ access: NONE MAIN EXEC ALL | |
1303 | * main no yes yes yes | |
1304 | * control no no yes yes | |
1305 | * other (forked) no no no yes */ | |
1306 | ||
1307 | if (flags & EXEC_IS_CONTROL) | |
1308 | /* A control process */ | |
1309 | return IN_SET(s->notify_access, NOTIFY_EXEC, NOTIFY_ALL); | |
1310 | ||
1311 | /* We only spawn main processes and control processes, so any | |
1312 | * process that is not a control process is a main process */ | |
1313 | return s->notify_access != NOTIFY_NONE; | |
1314 | } | |
1315 | ||
81a2b7ce LP |
1316 | static int service_spawn( |
1317 | Service *s, | |
1318 | ExecCommand *c, | |
21b2ce39 | 1319 | usec_t timeout, |
c39f1ce2 | 1320 | ExecFlags flags, |
81a2b7ce LP |
1321 | pid_t *_pid) { |
1322 | ||
9fa95f85 | 1323 | ExecParameters exec_params = { |
c39f1ce2 LP |
1324 | .flags = flags, |
1325 | .stdin_fd = -1, | |
1326 | .stdout_fd = -1, | |
1327 | .stderr_fd = -1, | |
9fa95f85 | 1328 | }; |
3c7416b6 LP |
1329 | _cleanup_strv_free_ char **final_env = NULL, **our_env = NULL, **fd_names = NULL; |
1330 | unsigned n_storage_fds = 0, n_socket_fds = 0, n_env = 0; | |
1331 | _cleanup_free_ int *fds = NULL; | |
1332 | pid_t pid; | |
8dd4c05b LP |
1333 | int r; |
1334 | ||
034c6ed7 LP |
1335 | assert(s); |
1336 | assert(c); | |
1337 | assert(_pid); | |
1338 | ||
3c7416b6 LP |
1339 | r = unit_prepare_exec(UNIT(s)); |
1340 | if (r < 0) | |
1341 | return r; | |
1342 | ||
9c1a61ad LP |
1343 | if (flags & EXEC_IS_CONTROL) { |
1344 | /* If this is a control process, mask the permissions/chroot application if this is requested. */ | |
1345 | if (s->permissions_start_only) | |
1703fa41 | 1346 | exec_params.flags &= ~EXEC_APPLY_SANDBOXING; |
9c1a61ad LP |
1347 | if (s->root_directory_start_only) |
1348 | exec_params.flags &= ~EXEC_APPLY_CHROOT; | |
1349 | } | |
1350 | ||
c39f1ce2 | 1351 | if ((flags & EXEC_PASS_FDS) || |
6cf6bbc2 LP |
1352 | s->exec_context.std_input == EXEC_INPUT_SOCKET || |
1353 | s->exec_context.std_output == EXEC_OUTPUT_SOCKET || | |
1354 | s->exec_context.std_error == EXEC_OUTPUT_SOCKET) { | |
1355 | ||
4c47affc | 1356 | r = service_collect_fds(s, &fds, &fd_names, &n_storage_fds, &n_socket_fds); |
8dd4c05b | 1357 | if (r < 0) |
36c16a7c | 1358 | return r; |
6cf6bbc2 | 1359 | |
4c47affc | 1360 | log_unit_debug(UNIT(s), "Passing %i fds to service", n_storage_fds + n_socket_fds); |
4f2d528d | 1361 | } |
44d8db9e | 1362 | |
36c16a7c LP |
1363 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), timeout)); |
1364 | if (r < 0) | |
1365 | return r; | |
034c6ed7 | 1366 | |
136dc4c4 | 1367 | our_env = new0(char*, 9); |
36c16a7c LP |
1368 | if (!our_env) |
1369 | return -ENOMEM; | |
c952c6ec | 1370 | |
6375bd20 | 1371 | if (service_exec_needs_notify_socket(s, flags)) |
36c16a7c LP |
1372 | if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) |
1373 | return -ENOMEM; | |
c952c6ec | 1374 | |
2105e76a | 1375 | if (s->main_pid > 0) |
36c16a7c LP |
1376 | if (asprintf(our_env + n_env++, "MAINPID="PID_FMT, s->main_pid) < 0) |
1377 | return -ENOMEM; | |
2105e76a | 1378 | |
c39f1ce2 | 1379 | if (MANAGER_IS_USER(UNIT(s)->manager)) |
df0ff127 | 1380 | if (asprintf(our_env + n_env++, "MANAGERPID="PID_FMT, getpid_cached()) < 0) |
36c16a7c | 1381 | return -ENOMEM; |
97ae63e2 | 1382 | |
8dd4c05b | 1383 | if (s->socket_fd >= 0) { |
3b1c5241 SL |
1384 | union sockaddr_union sa; |
1385 | socklen_t salen = sizeof(sa); | |
1386 | ||
f56e7bfe LP |
1387 | /* If this is a per-connection service instance, let's set $REMOTE_ADDR and $REMOTE_PORT to something |
1388 | * useful. Note that we do this only when we are still connected at this point in time, which we might | |
1389 | * very well not be. Hence we ignore all errors when retrieving peer information (as that might result | |
1390 | * in ENOTCONN), and just use whate we can use. */ | |
f2dbd059 | 1391 | |
f56e7bfe LP |
1392 | if (getpeername(s->socket_fd, &sa.sa, &salen) >= 0 && |
1393 | IN_SET(sa.sa.sa_family, AF_INET, AF_INET6, AF_VSOCK)) { | |
3b1c5241 | 1394 | |
3b1c5241 SL |
1395 | _cleanup_free_ char *addr = NULL; |
1396 | char *t; | |
882ac6e7 | 1397 | unsigned port; |
3b1c5241 SL |
1398 | |
1399 | r = sockaddr_pretty(&sa.sa, salen, true, false, &addr); | |
1400 | if (r < 0) | |
36c16a7c | 1401 | return r; |
3b1c5241 SL |
1402 | |
1403 | t = strappend("REMOTE_ADDR=", addr); | |
36c16a7c LP |
1404 | if (!t) |
1405 | return -ENOMEM; | |
3b1c5241 SL |
1406 | our_env[n_env++] = t; |
1407 | ||
882ac6e7 SH |
1408 | r = sockaddr_port(&sa.sa, &port); |
1409 | if (r < 0) | |
1410 | return r; | |
3b1c5241 | 1411 | |
36c16a7c LP |
1412 | if (asprintf(&t, "REMOTE_PORT=%u", port) < 0) |
1413 | return -ENOMEM; | |
3b1c5241 SL |
1414 | our_env[n_env++] = t; |
1415 | } | |
1416 | } | |
1417 | ||
136dc4c4 LP |
1418 | if (flags & EXEC_SETENV_RESULT) { |
1419 | if (asprintf(our_env + n_env++, "SERVICE_RESULT=%s", service_result_to_string(s->result)) < 0) | |
1420 | return -ENOMEM; | |
1421 | ||
1422 | if (s->main_exec_status.pid > 0 && | |
1423 | dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) { | |
1424 | if (asprintf(our_env + n_env++, "EXIT_CODE=%s", sigchld_code_to_string(s->main_exec_status.code)) < 0) | |
1425 | return -ENOMEM; | |
1426 | ||
1427 | if (s->main_exec_status.code == CLD_EXITED) | |
1428 | r = asprintf(our_env + n_env++, "EXIT_STATUS=%i", s->main_exec_status.status); | |
1429 | else | |
1430 | r = asprintf(our_env + n_env++, "EXIT_STATUS=%s", signal_to_string(s->main_exec_status.status)); | |
1431 | if (r < 0) | |
1432 | return -ENOMEM; | |
1433 | } | |
1434 | } | |
1435 | ||
f0d47797 | 1436 | unit_set_exec_params(UNIT(s), &exec_params); |
3536f49e YW |
1437 | |
1438 | final_env = strv_env_merge(2, exec_params.environment, our_env, NULL); | |
36c16a7c LP |
1439 | if (!final_env) |
1440 | return -ENOMEM; | |
c952c6ec | 1441 | |
5bf7569c LP |
1442 | /* System services should get a new keyring by default. */ |
1443 | SET_FLAG(exec_params.flags, EXEC_NEW_KEYRING, MANAGER_IS_SYSTEM(UNIT(s)->manager)); | |
ac647978 LP |
1444 | |
1445 | /* System D-Bus needs nss-systemd disabled, so that we don't deadlock */ | |
1446 | SET_FLAG(exec_params.flags, EXEC_NSS_BYPASS_BUS, | |
1447 | MANAGER_IS_SYSTEM(UNIT(s)->manager) && unit_has_name(UNIT(s), SPECIAL_DBUS_SERVICE)); | |
4ad49000 | 1448 | |
5125e762 | 1449 | exec_params.argv = c->argv; |
c39f1ce2 | 1450 | exec_params.environment = final_env; |
9fa95f85 | 1451 | exec_params.fds = fds; |
8dd4c05b | 1452 | exec_params.fd_names = fd_names; |
4c47affc | 1453 | exec_params.n_storage_fds = n_storage_fds; |
9b141911 | 1454 | exec_params.n_socket_fds = n_socket_fds; |
9fa95f85 | 1455 | exec_params.watchdog_usec = s->watchdog_usec; |
a34ceba6 | 1456 | exec_params.selinux_context_net = s->socket_fd_selinux_context_net; |
9fa95f85 DM |
1457 | if (s->type == SERVICE_IDLE) |
1458 | exec_params.idle_pipe = UNIT(s)->manager->idle_pipe; | |
a34ceba6 LP |
1459 | exec_params.stdin_fd = s->stdin_fd; |
1460 | exec_params.stdout_fd = s->stdout_fd; | |
1461 | exec_params.stderr_fd = s->stderr_fd; | |
9fa95f85 | 1462 | |
f2341e0a LP |
1463 | r = exec_spawn(UNIT(s), |
1464 | c, | |
9e2f7c11 | 1465 | &s->exec_context, |
9fa95f85 | 1466 | &exec_params, |
613b411c | 1467 | s->exec_runtime, |
29206d46 | 1468 | &s->dynamic_creds, |
9e2f7c11 | 1469 | &pid); |
9e2f7c11 | 1470 | if (r < 0) |
36c16a7c | 1471 | return r; |
034c6ed7 | 1472 | |
117dcc57 | 1473 | r = unit_watch_pid(UNIT(s), pid); |
e8b509d3 | 1474 | if (r < 0) /* FIXME: we need to do something here */ |
36c16a7c | 1475 | return r; |
034c6ed7 LP |
1476 | |
1477 | *_pid = pid; | |
1478 | ||
5cb5a6ff | 1479 | return 0; |
034c6ed7 LP |
1480 | } |
1481 | ||
80876c20 LP |
1482 | static int main_pid_good(Service *s) { |
1483 | assert(s); | |
1484 | ||
51894d70 | 1485 | /* Returns 0 if the pid is dead, > 0 if it is good, < 0 if we don't know */ |
80876c20 | 1486 | |
fc08079e | 1487 | /* If we know the pid file, then let's just check if it is |
80876c20 | 1488 | * still valid */ |
6dfa5494 LP |
1489 | if (s->main_pid_known) { |
1490 | ||
1491 | /* If it's an alien child let's check if it is still | |
1492 | * alive ... */ | |
62220cf7 | 1493 | if (s->main_pid_alien && s->main_pid > 0) |
9f5650ae | 1494 | return pid_is_alive(s->main_pid); |
6dfa5494 LP |
1495 | |
1496 | /* .. otherwise assume we'll get a SIGCHLD for it, | |
1497 | * which we really should wait for to collect exit | |
1498 | * status and code */ | |
80876c20 | 1499 | return s->main_pid > 0; |
6dfa5494 | 1500 | } |
80876c20 LP |
1501 | |
1502 | /* We don't know the pid */ | |
1503 | return -EAGAIN; | |
1504 | } | |
1505 | ||
019be286 | 1506 | static int control_pid_good(Service *s) { |
80876c20 LP |
1507 | assert(s); |
1508 | ||
07697d7e LP |
1509 | /* Returns 0 if the control PID is dead, > 0 if it is good. We never actually return < 0 here, but in order to |
1510 | * make this function as similar as possible to main_pid_good() and cgroup_good(), we pretend that < 0 also | |
1511 | * means: we can't figure it out. */ | |
1512 | ||
80876c20 LP |
1513 | return s->control_pid > 0; |
1514 | } | |
1515 | ||
1516 | static int cgroup_good(Service *s) { | |
1517 | int r; | |
1518 | ||
1519 | assert(s); | |
1520 | ||
07697d7e LP |
1521 | /* Returns 0 if the cgroup is empty or doesn't exist, > 0 if it is exists and is populated, < 0 if we can't |
1522 | * figure it out */ | |
1523 | ||
4ad49000 LP |
1524 | if (!UNIT(s)->cgroup_path) |
1525 | return 0; | |
1526 | ||
6f883237 | 1527 | r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, UNIT(s)->cgroup_path); |
117dcc57 | 1528 | if (r < 0) |
80876c20 LP |
1529 | return r; |
1530 | ||
b13ddbbc | 1531 | return r == 0; |
80876c20 LP |
1532 | } |
1533 | ||
a509f0e6 LP |
1534 | static bool service_shall_restart(Service *s) { |
1535 | assert(s); | |
1536 | ||
1537 | /* Don't restart after manual stops */ | |
1538 | if (s->forbid_restart) | |
1539 | return false; | |
1540 | ||
1541 | /* Never restart if this is configured as special exception */ | |
1542 | if (exit_status_set_test(&s->restart_prevent_status, s->main_exec_status.code, s->main_exec_status.status)) | |
1543 | return false; | |
1544 | ||
1545 | /* Restart if the exit code/status are configured as restart triggers */ | |
1546 | if (exit_status_set_test(&s->restart_force_status, s->main_exec_status.code, s->main_exec_status.status)) | |
1547 | return true; | |
1548 | ||
1549 | switch (s->restart) { | |
1550 | ||
1551 | case SERVICE_RESTART_NO: | |
1552 | return false; | |
1553 | ||
1554 | case SERVICE_RESTART_ALWAYS: | |
1555 | return true; | |
1556 | ||
1557 | case SERVICE_RESTART_ON_SUCCESS: | |
1558 | return s->result == SERVICE_SUCCESS; | |
1559 | ||
1560 | case SERVICE_RESTART_ON_FAILURE: | |
1561 | return s->result != SERVICE_SUCCESS; | |
1562 | ||
1563 | case SERVICE_RESTART_ON_ABNORMAL: | |
1564 | return !IN_SET(s->result, SERVICE_SUCCESS, SERVICE_FAILURE_EXIT_CODE); | |
1565 | ||
1566 | case SERVICE_RESTART_ON_WATCHDOG: | |
1567 | return s->result == SERVICE_FAILURE_WATCHDOG; | |
1568 | ||
1569 | case SERVICE_RESTART_ON_ABORT: | |
1570 | return IN_SET(s->result, SERVICE_FAILURE_SIGNAL, SERVICE_FAILURE_CORE_DUMP); | |
1571 | ||
1572 | default: | |
1573 | assert_not_reached("unknown restart setting"); | |
1574 | } | |
1575 | } | |
1576 | ||
deb4e708 MK |
1577 | static bool service_will_restart(Unit *u) { |
1578 | Service *s = SERVICE(u); | |
1579 | ||
53f47dfc YW |
1580 | assert(s); |
1581 | ||
deb4e708 MK |
1582 | if (s->will_auto_restart) |
1583 | return true; | |
53f47dfc YW |
1584 | if (s->state == SERVICE_AUTO_RESTART) |
1585 | return true; | |
1586 | if (!UNIT(s)->job) | |
1587 | return false; | |
1588 | if (UNIT(s)->job->type == JOB_START) | |
1589 | return true; | |
2ad2e41a | 1590 | |
53f47dfc YW |
1591 | return false; |
1592 | } | |
1593 | ||
f42806df | 1594 | static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) { |
034c6ed7 | 1595 | int r; |
0f52f8e5 | 1596 | |
034c6ed7 LP |
1597 | assert(s); |
1598 | ||
0f52f8e5 LP |
1599 | /* If there's a stop job queued before we enter the DEAD state, we shouldn't act on Restart=, in order to not |
1600 | * undo what has already been enqueued. */ | |
1601 | if (unit_stop_pending(UNIT(s))) | |
1602 | allow_restart = false; | |
1603 | ||
a0fef983 | 1604 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1605 | s->result = f; |
034c6ed7 | 1606 | |
ed77d407 LP |
1607 | if (s->result != SERVICE_SUCCESS) |
1608 | log_unit_warning(UNIT(s), "Failed with result '%s'.", service_result_to_string(s->result)); | |
1609 | ||
deb4e708 MK |
1610 | if (allow_restart && service_shall_restart(s)) |
1611 | s->will_auto_restart = true; | |
1612 | ||
7eb2a8a1 LP |
1613 | /* Make sure service_release_resources() doesn't destroy our FD store, while we are changing through |
1614 | * SERVICE_FAILED/SERVICE_DEAD before entering into SERVICE_AUTO_RESTART. */ | |
1615 | s->n_keep_fd_store ++; | |
1616 | ||
0c7f15b3 MS |
1617 | service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD); |
1618 | ||
deb4e708 MK |
1619 | if (s->will_auto_restart) { |
1620 | s->will_auto_restart = false; | |
034c6ed7 | 1621 | |
36c16a7c | 1622 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->restart_usec)); |
7eb2a8a1 LP |
1623 | if (r < 0) { |
1624 | s->n_keep_fd_store--; | |
034c6ed7 | 1625 | goto fail; |
7eb2a8a1 | 1626 | } |
034c6ed7 LP |
1627 | |
1628 | service_set_state(s, SERVICE_AUTO_RESTART); | |
7a0019d3 LP |
1629 | } else |
1630 | /* If we shan't restart, then flush out the restart counter. But don't do that immediately, so that the | |
1631 | * user can still introspect the counter. Do so on the next start. */ | |
1632 | s->flush_n_restarts = true; | |
034c6ed7 | 1633 | |
7eb2a8a1 LP |
1634 | /* The new state is in effect, let's decrease the fd store ref counter again. Let's also readd us to the GC |
1635 | * queue, so that the fd store is possibly gc'ed again */ | |
1636 | s->n_keep_fd_store--; | |
1637 | unit_add_to_gc_queue(UNIT(s)); | |
1638 | ||
f2341e0a | 1639 | /* The next restart might not be a manual stop, hence reset the flag indicating manual stops */ |
47342320 LP |
1640 | s->forbid_restart = false; |
1641 | ||
e66cf1a3 | 1642 | /* We want fresh tmpdirs in case service is started again immediately */ |
e8a565cb | 1643 | s->exec_runtime = exec_runtime_unref(s->exec_runtime, true); |
c17ec25e | 1644 | |
53f47dfc | 1645 | if (s->exec_context.runtime_directory_preserve_mode == EXEC_PRESERVE_NO || |
deb4e708 | 1646 | (s->exec_context.runtime_directory_preserve_mode == EXEC_PRESERVE_RESTART && !service_will_restart(UNIT(s)))) |
53f47dfc | 1647 | /* Also, remove the runtime directory */ |
3536f49e | 1648 | exec_context_destroy_runtime_directory(&s->exec_context, UNIT(s)->manager->prefix[EXEC_DIRECTORY_RUNTIME]); |
e66cf1a3 | 1649 | |
00d9ef85 LP |
1650 | /* Get rid of the IPC bits of the user */ |
1651 | unit_unref_uid_gid(UNIT(s), true); | |
1652 | ||
29206d46 LP |
1653 | /* Release the user, and destroy it if we are the only remaining owner */ |
1654 | dynamic_creds_destroy(&s->dynamic_creds); | |
1655 | ||
9285c9ff LN |
1656 | /* Try to delete the pid file. At this point it will be |
1657 | * out-of-date, and some software might be confused by it, so | |
1658 | * let's remove it. */ | |
1659 | if (s->pid_file) | |
fabab190 | 1660 | (void) unlink(s->pid_file); |
9285c9ff | 1661 | |
034c6ed7 LP |
1662 | return; |
1663 | ||
1664 | fail: | |
f2341e0a | 1665 | log_unit_warning_errno(UNIT(s), r, "Failed to run install restart timer: %m"); |
f42806df | 1666 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); |
034c6ed7 LP |
1667 | } |
1668 | ||
f42806df | 1669 | static void service_enter_stop_post(Service *s, ServiceResult f) { |
034c6ed7 LP |
1670 | int r; |
1671 | assert(s); | |
1672 | ||
a0fef983 | 1673 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1674 | s->result = f; |
034c6ed7 | 1675 | |
5e94833f | 1676 | service_unwatch_control_pid(s); |
50be4f4a LP |
1677 | |
1678 | (void) unit_enqueue_rewatch_pids(UNIT(s)); | |
5e94833f | 1679 | |
117dcc57 ZJS |
1680 | s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST]; |
1681 | if (s->control_command) { | |
867b3b7d LP |
1682 | s->control_command_id = SERVICE_EXEC_STOP_POST; |
1683 | ||
ecedd90f LP |
1684 | r = service_spawn(s, |
1685 | s->control_command, | |
21b2ce39 | 1686 | s->timeout_stop_usec, |
1703fa41 | 1687 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_IS_CONTROL|EXEC_SETENV_RESULT, |
ecedd90f LP |
1688 | &s->control_pid); |
1689 | if (r < 0) | |
034c6ed7 LP |
1690 | goto fail; |
1691 | ||
80876c20 LP |
1692 | service_set_state(s, SERVICE_STOP_POST); |
1693 | } else | |
ac84d1fb | 1694 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
1695 | |
1696 | return; | |
1697 | ||
1698 | fail: | |
f2341e0a | 1699 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop-post' task: %m"); |
f42806df | 1700 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1701 | } |
1702 | ||
4940c0b0 LP |
1703 | static int state_to_kill_operation(ServiceState state) { |
1704 | switch (state) { | |
1705 | ||
1706 | case SERVICE_STOP_SIGABRT: | |
1707 | return KILL_ABORT; | |
1708 | ||
1709 | case SERVICE_STOP_SIGTERM: | |
1710 | case SERVICE_FINAL_SIGTERM: | |
1711 | return KILL_TERMINATE; | |
1712 | ||
1713 | case SERVICE_STOP_SIGKILL: | |
1714 | case SERVICE_FINAL_SIGKILL: | |
1715 | return KILL_KILL; | |
1716 | ||
1717 | default: | |
1718 | return _KILL_OPERATION_INVALID; | |
1719 | } | |
1720 | } | |
1721 | ||
f42806df | 1722 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) { |
034c6ed7 | 1723 | int r; |
034c6ed7 LP |
1724 | |
1725 | assert(s); | |
1726 | ||
a0fef983 | 1727 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1728 | s->result = f; |
034c6ed7 | 1729 | |
50be4f4a LP |
1730 | /* Before sending any signal, make sure we track all members of this cgroup */ |
1731 | (void) unit_watch_all_pids(UNIT(s)); | |
1732 | ||
1733 | /* Also, enqueue a job that we recheck all our PIDs a bit later, given that it's likely some processes have | |
1734 | * died now */ | |
1735 | (void) unit_enqueue_rewatch_pids(UNIT(s)); | |
a911bb9a | 1736 | |
cd2086fe LP |
1737 | r = unit_kill_context( |
1738 | UNIT(s), | |
1739 | &s->kill_context, | |
4940c0b0 | 1740 | state_to_kill_operation(state), |
cd2086fe LP |
1741 | s->main_pid, |
1742 | s->control_pid, | |
1743 | s->main_pid_alien); | |
1744 | if (r < 0) | |
1745 | goto fail; | |
034c6ed7 | 1746 | |
cd2086fe | 1747 | if (r > 0) { |
36c16a7c LP |
1748 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_stop_usec)); |
1749 | if (r < 0) | |
1750 | goto fail; | |
d6ea93e3 | 1751 | |
80876c20 | 1752 | service_set_state(s, state); |
1db0db4b | 1753 | } else if (IN_SET(state, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM) && s->kill_context.send_sigkill) |
ac84d1fb | 1754 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_SUCCESS); |
1db0db4b | 1755 | else if (IN_SET(state, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 1756 | service_enter_stop_post(s, SERVICE_SUCCESS); |
1db0db4b | 1757 | else if (state == SERVICE_FINAL_SIGTERM && s->kill_context.send_sigkill) |
ac84d1fb | 1758 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_SUCCESS); |
80876c20 | 1759 | else |
f42806df | 1760 | service_enter_dead(s, SERVICE_SUCCESS, true); |
034c6ed7 LP |
1761 | |
1762 | return; | |
1763 | ||
1764 | fail: | |
f2341e0a | 1765 | log_unit_warning_errno(UNIT(s), r, "Failed to kill processes: %m"); |
034c6ed7 | 1766 | |
a00973af | 1767 | if (IN_SET(state, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 1768 | service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES); |
034c6ed7 | 1769 | else |
f42806df | 1770 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
034c6ed7 LP |
1771 | } |
1772 | ||
308d72dc LP |
1773 | static void service_enter_stop_by_notify(Service *s) { |
1774 | assert(s); | |
1775 | ||
50be4f4a | 1776 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
308d72dc | 1777 | |
36c16a7c | 1778 | service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_stop_usec)); |
308d72dc | 1779 | |
6041a7ee MS |
1780 | /* The service told us it's stopping, so it's as if we SIGTERM'd it. */ |
1781 | service_set_state(s, SERVICE_STOP_SIGTERM); | |
308d72dc LP |
1782 | } |
1783 | ||
f42806df | 1784 | static void service_enter_stop(Service *s, ServiceResult f) { |
034c6ed7 | 1785 | int r; |
5925dd3c | 1786 | |
034c6ed7 LP |
1787 | assert(s); |
1788 | ||
a0fef983 | 1789 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1790 | s->result = f; |
034c6ed7 | 1791 | |
5e94833f | 1792 | service_unwatch_control_pid(s); |
50be4f4a | 1793 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
5e94833f | 1794 | |
117dcc57 ZJS |
1795 | s->control_command = s->exec_command[SERVICE_EXEC_STOP]; |
1796 | if (s->control_command) { | |
867b3b7d LP |
1797 | s->control_command_id = SERVICE_EXEC_STOP; |
1798 | ||
ecedd90f LP |
1799 | r = service_spawn(s, |
1800 | s->control_command, | |
21b2ce39 | 1801 | s->timeout_stop_usec, |
1703fa41 | 1802 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_SETENV_RESULT, |
ecedd90f LP |
1803 | &s->control_pid); |
1804 | if (r < 0) | |
034c6ed7 LP |
1805 | goto fail; |
1806 | ||
80876c20 LP |
1807 | service_set_state(s, SERVICE_STOP); |
1808 | } else | |
f42806df | 1809 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
1810 | |
1811 | return; | |
1812 | ||
1813 | fail: | |
f2341e0a | 1814 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop' task: %m"); |
f42806df | 1815 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1816 | } |
1817 | ||
957c3cf9 LP |
1818 | static bool service_good(Service *s) { |
1819 | int main_pid_ok; | |
1820 | assert(s); | |
1821 | ||
1822 | if (s->type == SERVICE_DBUS && !s->bus_name_good) | |
1823 | return false; | |
1824 | ||
1825 | main_pid_ok = main_pid_good(s); | |
1826 | if (main_pid_ok > 0) /* It's alive */ | |
1827 | return true; | |
1828 | if (main_pid_ok == 0) /* It's dead */ | |
1829 | return false; | |
1830 | ||
1831 | /* OK, we don't know anything about the main PID, maybe | |
1832 | * because there is none. Let's check the control group | |
1833 | * instead. */ | |
1834 | ||
1835 | return cgroup_good(s) != 0; | |
1836 | } | |
1837 | ||
f42806df | 1838 | static void service_enter_running(Service *s, ServiceResult f) { |
80876c20 LP |
1839 | assert(s); |
1840 | ||
a0fef983 | 1841 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1842 | s->result = f; |
80876c20 | 1843 | |
089b64d5 LP |
1844 | service_unwatch_control_pid(s); |
1845 | ||
ec5b1452 LP |
1846 | if (s->result != SERVICE_SUCCESS) |
1847 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); | |
1848 | else if (service_good(s)) { | |
308d72dc | 1849 | |
ec5b1452 | 1850 | /* If there are any queued up sd_notify() notifications, process them now */ |
308d72dc LP |
1851 | if (s->notify_state == NOTIFY_RELOADING) |
1852 | service_enter_reload_by_notify(s); | |
1853 | else if (s->notify_state == NOTIFY_STOPPING) | |
1854 | service_enter_stop_by_notify(s); | |
36c16a7c | 1855 | else { |
308d72dc | 1856 | service_set_state(s, SERVICE_RUNNING); |
36c16a7c LP |
1857 | service_arm_timer(s, usec_add(UNIT(s)->active_enter_timestamp.monotonic, s->runtime_max_usec)); |
1858 | } | |
308d72dc | 1859 | |
ec5b1452 | 1860 | } else if (s->remain_after_exit) |
80876c20 LP |
1861 | service_set_state(s, SERVICE_EXITED); |
1862 | else | |
f42806df | 1863 | service_enter_stop(s, SERVICE_SUCCESS); |
80876c20 LP |
1864 | } |
1865 | ||
034c6ed7 LP |
1866 | static void service_enter_start_post(Service *s) { |
1867 | int r; | |
1868 | assert(s); | |
1869 | ||
5e94833f | 1870 | service_unwatch_control_pid(s); |
842129f5 | 1871 | service_reset_watchdog(s); |
bb242b7b | 1872 | |
117dcc57 ZJS |
1873 | s->control_command = s->exec_command[SERVICE_EXEC_START_POST]; |
1874 | if (s->control_command) { | |
867b3b7d LP |
1875 | s->control_command_id = SERVICE_EXEC_START_POST; |
1876 | ||
ecedd90f LP |
1877 | r = service_spawn(s, |
1878 | s->control_command, | |
21b2ce39 | 1879 | s->timeout_start_usec, |
1703fa41 | 1880 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL, |
ecedd90f LP |
1881 | &s->control_pid); |
1882 | if (r < 0) | |
034c6ed7 LP |
1883 | goto fail; |
1884 | ||
80876c20 LP |
1885 | service_set_state(s, SERVICE_START_POST); |
1886 | } else | |
f42806df | 1887 | service_enter_running(s, SERVICE_SUCCESS); |
034c6ed7 LP |
1888 | |
1889 | return; | |
1890 | ||
1891 | fail: | |
f2341e0a | 1892 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-post' task: %m"); |
f42806df | 1893 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1894 | } |
1895 | ||
e9a4f676 | 1896 | static void service_kill_control_process(Service *s) { |
a6951a50 | 1897 | int r; |
4ad49000 | 1898 | |
a6951a50 LP |
1899 | assert(s); |
1900 | ||
e9a4f676 LP |
1901 | if (s->control_pid <= 0) |
1902 | return; | |
4ad49000 | 1903 | |
e9a4f676 LP |
1904 | r = kill_and_sigcont(s->control_pid, SIGKILL); |
1905 | if (r < 0) { | |
1906 | _cleanup_free_ char *comm = NULL; | |
a6951a50 | 1907 | |
e9a4f676 | 1908 | (void) get_process_comm(s->control_pid, &comm); |
a6951a50 | 1909 | |
e9a4f676 LP |
1910 | log_unit_debug_errno(UNIT(s), r, "Failed to kill control process " PID_FMT " (%s), ignoring: %m", |
1911 | s->control_pid, strna(comm)); | |
a6951a50 | 1912 | } |
4ad49000 LP |
1913 | } |
1914 | ||
034c6ed7 | 1915 | static void service_enter_start(Service *s) { |
4ad49000 | 1916 | ExecCommand *c; |
36c16a7c | 1917 | usec_t timeout; |
034c6ed7 LP |
1918 | pid_t pid; |
1919 | int r; | |
1920 | ||
1921 | assert(s); | |
1922 | ||
41efeaec LP |
1923 | service_unwatch_control_pid(s); |
1924 | service_unwatch_main_pid(s); | |
80876c20 | 1925 | |
a4634b21 LP |
1926 | unit_warn_leftover_processes(UNIT(s)); |
1927 | ||
867b3b7d LP |
1928 | if (s->type == SERVICE_FORKING) { |
1929 | s->control_command_id = SERVICE_EXEC_START; | |
1930 | c = s->control_command = s->exec_command[SERVICE_EXEC_START]; | |
1931 | ||
1932 | s->main_command = NULL; | |
1933 | } else { | |
1934 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
1935 | s->control_command = NULL; | |
1936 | ||
1937 | c = s->main_command = s->exec_command[SERVICE_EXEC_START]; | |
1938 | } | |
34e9ba66 | 1939 | |
96fb8242 | 1940 | if (!c) { |
47fffb35 LP |
1941 | if (s->type != SERVICE_ONESHOT) { |
1942 | /* There's no command line configured for the main command? Hmm, that is strange. This can only | |
1943 | * happen if the configuration changes at runtime. In this case, let's enter a failure | |
1944 | * state. */ | |
b8b846d7 | 1945 | log_unit_error(UNIT(s), "There's no 'start' task anymore we could start."); |
47fffb35 LP |
1946 | r = -ENXIO; |
1947 | goto fail; | |
1948 | } | |
1949 | ||
96fb8242 LP |
1950 | service_enter_start_post(s); |
1951 | return; | |
1952 | } | |
1953 | ||
36c16a7c LP |
1954 | if (IN_SET(s->type, SERVICE_SIMPLE, SERVICE_IDLE)) |
1955 | /* For simple + idle this is the main process. We don't apply any timeout here, but | |
1956 | * service_enter_running() will later apply the .runtime_max_usec timeout. */ | |
1957 | timeout = USEC_INFINITY; | |
1958 | else | |
1959 | timeout = s->timeout_start_usec; | |
1960 | ||
ecedd90f LP |
1961 | r = service_spawn(s, |
1962 | c, | |
36c16a7c | 1963 | timeout, |
1703fa41 | 1964 | EXEC_PASS_FDS|EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_SET_WATCHDOG, |
ecedd90f LP |
1965 | &pid); |
1966 | if (r < 0) | |
034c6ed7 LP |
1967 | goto fail; |
1968 | ||
36c16a7c | 1969 | if (IN_SET(s->type, SERVICE_SIMPLE, SERVICE_IDLE)) { |
034c6ed7 LP |
1970 | /* For simple services we immediately start |
1971 | * the START_POST binaries. */ | |
1972 | ||
5925dd3c | 1973 | service_set_main_pid(s, pid); |
034c6ed7 LP |
1974 | service_enter_start_post(s); |
1975 | ||
1976 | } else if (s->type == SERVICE_FORKING) { | |
1977 | ||
1978 | /* For forking services we wait until the start | |
1979 | * process exited. */ | |
1980 | ||
e55224ca | 1981 | s->control_pid = pid; |
80876c20 LP |
1982 | service_set_state(s, SERVICE_START); |
1983 | ||
36c16a7c | 1984 | } else if (IN_SET(s->type, SERVICE_ONESHOT, SERVICE_DBUS, SERVICE_NOTIFY)) { |
7d55e835 | 1985 | |
34e9ba66 | 1986 | /* For oneshot services we wait until the start |
7d55e835 LP |
1987 | * process exited, too, but it is our main process. */ |
1988 | ||
05e343b7 | 1989 | /* For D-Bus services we know the main pid right away, |
8c47c732 LP |
1990 | * but wait for the bus name to appear on the |
1991 | * bus. Notify services are similar. */ | |
05e343b7 | 1992 | |
5925dd3c | 1993 | service_set_main_pid(s, pid); |
80876c20 | 1994 | service_set_state(s, SERVICE_START); |
034c6ed7 LP |
1995 | } else |
1996 | assert_not_reached("Unknown service type"); | |
1997 | ||
1998 | return; | |
1999 | ||
2000 | fail: | |
f2341e0a | 2001 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start' task: %m"); |
c3fda31d | 2002 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
2003 | } |
2004 | ||
2005 | static void service_enter_start_pre(Service *s) { | |
2006 | int r; | |
2007 | ||
2008 | assert(s); | |
2009 | ||
5e94833f LP |
2010 | service_unwatch_control_pid(s); |
2011 | ||
117dcc57 ZJS |
2012 | s->control_command = s->exec_command[SERVICE_EXEC_START_PRE]; |
2013 | if (s->control_command) { | |
8f53a7b8 | 2014 | |
a4634b21 LP |
2015 | unit_warn_leftover_processes(UNIT(s)); |
2016 | ||
867b3b7d LP |
2017 | s->control_command_id = SERVICE_EXEC_START_PRE; |
2018 | ||
ecedd90f LP |
2019 | r = service_spawn(s, |
2020 | s->control_command, | |
21b2ce39 | 2021 | s->timeout_start_usec, |
1703fa41 | 2022 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_APPLY_TTY_STDIN, |
ecedd90f LP |
2023 | &s->control_pid); |
2024 | if (r < 0) | |
034c6ed7 LP |
2025 | goto fail; |
2026 | ||
80876c20 LP |
2027 | service_set_state(s, SERVICE_START_PRE); |
2028 | } else | |
034c6ed7 LP |
2029 | service_enter_start(s); |
2030 | ||
2031 | return; | |
2032 | ||
2033 | fail: | |
f2341e0a | 2034 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-pre' task: %m"); |
f42806df | 2035 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
034c6ed7 LP |
2036 | } |
2037 | ||
2038 | static void service_enter_restart(Service *s) { | |
4afd3348 | 2039 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
034c6ed7 | 2040 | int r; |
398ef8ba | 2041 | |
034c6ed7 LP |
2042 | assert(s); |
2043 | ||
a8bb2e65 LP |
2044 | if (UNIT(s)->job && UNIT(s)->job->type == JOB_STOP) { |
2045 | /* Don't restart things if we are going down anyway */ | |
f2341e0a | 2046 | log_unit_info(UNIT(s), "Stop job pending for unit, delaying automatic restart."); |
2edfa366 | 2047 | |
36c16a7c | 2048 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->restart_usec)); |
a8bb2e65 | 2049 | if (r < 0) |
2edfa366 | 2050 | goto fail; |
feae8adb DW |
2051 | |
2052 | return; | |
2edfa366 LP |
2053 | } |
2054 | ||
48bb5876 DW |
2055 | /* Any units that are bound to this service must also be |
2056 | * restarted. We use JOB_RESTART (instead of the more obvious | |
2057 | * JOB_START) here so that those dependency jobs will be added | |
2058 | * as well. */ | |
4bd29fe5 | 2059 | r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_FAIL, &error, NULL); |
48bb5876 | 2060 | if (r < 0) |
034c6ed7 LP |
2061 | goto fail; |
2062 | ||
7a0019d3 LP |
2063 | /* Count the jobs we enqueue for restarting. This counter is maintained as long as the unit isn't fully |
2064 | * stopped, i.e. as long as it remains up or remains in auto-start states. The use can reset the counter | |
2065 | * explicitly however via the usual "systemctl reset-failure" logic. */ | |
2066 | s->n_restarts ++; | |
2067 | s->flush_n_restarts = false; | |
2068 | ||
2069 | log_struct(LOG_INFO, | |
2070 | "MESSAGE_ID=" SD_MESSAGE_UNIT_RESTART_SCHEDULED_STR, | |
2071 | LOG_UNIT_ID(UNIT(s)), | |
f1c50bec | 2072 | LOG_UNIT_INVOCATION_ID(UNIT(s)), |
7a0019d3 | 2073 | LOG_UNIT_MESSAGE(UNIT(s), "Scheduled restart job, restart counter is at %u.", s->n_restarts), |
a1230ff9 | 2074 | "N_RESTARTS=%u", s->n_restarts); |
7a0019d3 LP |
2075 | |
2076 | /* Notify clients about changed restart counter */ | |
2077 | unit_add_to_dbus_queue(UNIT(s)); | |
2078 | ||
a8bb2e65 LP |
2079 | /* Note that we stay in the SERVICE_AUTO_RESTART state here, |
2080 | * it will be canceled as part of the service_stop() call that | |
2081 | * is executed as part of JOB_RESTART. */ | |
2082 | ||
034c6ed7 LP |
2083 | return; |
2084 | ||
2085 | fail: | |
f2341e0a | 2086 | log_unit_warning(UNIT(s), "Failed to schedule restart job: %s", bus_error_message(&error, -r)); |
f42806df | 2087 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); |
034c6ed7 LP |
2088 | } |
2089 | ||
308d72dc | 2090 | static void service_enter_reload_by_notify(Service *s) { |
15d167f8 JW |
2091 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
2092 | int r; | |
2093 | ||
308d72dc LP |
2094 | assert(s); |
2095 | ||
36c16a7c | 2096 | service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_start_usec)); |
308d72dc | 2097 | service_set_state(s, SERVICE_RELOAD); |
15d167f8 JW |
2098 | |
2099 | /* service_enter_reload_by_notify is never called during a reload, thus no loops are possible. */ | |
2100 | r = manager_propagate_reload(UNIT(s)->manager, UNIT(s), JOB_FAIL, &error); | |
2101 | if (r < 0) | |
2102 | log_unit_warning(UNIT(s), "Failed to schedule propagation of reload: %s", bus_error_message(&error, -r)); | |
308d72dc LP |
2103 | } |
2104 | ||
034c6ed7 LP |
2105 | static void service_enter_reload(Service *s) { |
2106 | int r; | |
2107 | ||
2108 | assert(s); | |
2109 | ||
5e94833f | 2110 | service_unwatch_control_pid(s); |
95c906ae | 2111 | s->reload_result = SERVICE_SUCCESS; |
5e94833f | 2112 | |
117dcc57 ZJS |
2113 | s->control_command = s->exec_command[SERVICE_EXEC_RELOAD]; |
2114 | if (s->control_command) { | |
867b3b7d LP |
2115 | s->control_command_id = SERVICE_EXEC_RELOAD; |
2116 | ||
ecedd90f LP |
2117 | r = service_spawn(s, |
2118 | s->control_command, | |
21b2ce39 | 2119 | s->timeout_start_usec, |
1703fa41 | 2120 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL, |
ecedd90f LP |
2121 | &s->control_pid); |
2122 | if (r < 0) | |
034c6ed7 LP |
2123 | goto fail; |
2124 | ||
80876c20 LP |
2125 | service_set_state(s, SERVICE_RELOAD); |
2126 | } else | |
f42806df | 2127 | service_enter_running(s, SERVICE_SUCCESS); |
034c6ed7 LP |
2128 | |
2129 | return; | |
2130 | ||
2131 | fail: | |
f2341e0a | 2132 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'reload' task: %m"); |
f42806df LP |
2133 | s->reload_result = SERVICE_FAILURE_RESOURCES; |
2134 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
2135 | } |
2136 | ||
f42806df | 2137 | static void service_run_next_control(Service *s) { |
36c16a7c | 2138 | usec_t timeout; |
034c6ed7 LP |
2139 | int r; |
2140 | ||
2141 | assert(s); | |
2142 | assert(s->control_command); | |
2143 | assert(s->control_command->command_next); | |
2144 | ||
34e9ba66 | 2145 | assert(s->control_command_id != SERVICE_EXEC_START); |
034c6ed7 | 2146 | |
34e9ba66 | 2147 | s->control_command = s->control_command->command_next; |
5e94833f LP |
2148 | service_unwatch_control_pid(s); |
2149 | ||
36c16a7c LP |
2150 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
2151 | timeout = s->timeout_start_usec; | |
2152 | else | |
2153 | timeout = s->timeout_stop_usec; | |
2154 | ||
ecedd90f LP |
2155 | r = service_spawn(s, |
2156 | s->control_command, | |
36c16a7c | 2157 | timeout, |
1703fa41 | 2158 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL| |
136dc4c4 LP |
2159 | (IN_SET(s->control_command_id, SERVICE_EXEC_START_PRE, SERVICE_EXEC_STOP_POST) ? EXEC_APPLY_TTY_STDIN : 0)| |
2160 | (IN_SET(s->control_command_id, SERVICE_EXEC_STOP, SERVICE_EXEC_STOP_POST) ? EXEC_SETENV_RESULT : 0), | |
ecedd90f LP |
2161 | &s->control_pid); |
2162 | if (r < 0) | |
034c6ed7 LP |
2163 | goto fail; |
2164 | ||
2165 | return; | |
2166 | ||
2167 | fail: | |
f2341e0a | 2168 | log_unit_warning_errno(UNIT(s), r, "Failed to run next control task: %m"); |
034c6ed7 | 2169 | |
4cd9fa81 | 2170 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START_POST, SERVICE_STOP)) |
f42806df | 2171 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 | 2172 | else if (s->state == SERVICE_STOP_POST) |
f42806df | 2173 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
e2f3b44c | 2174 | else if (s->state == SERVICE_RELOAD) { |
f42806df LP |
2175 | s->reload_result = SERVICE_FAILURE_RESOURCES; |
2176 | service_enter_running(s, SERVICE_SUCCESS); | |
e2f3b44c | 2177 | } else |
f42806df | 2178 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
5cb5a6ff LP |
2179 | } |
2180 | ||
f42806df | 2181 | static void service_run_next_main(Service *s) { |
34e9ba66 LP |
2182 | pid_t pid; |
2183 | int r; | |
2184 | ||
2185 | assert(s); | |
867b3b7d LP |
2186 | assert(s->main_command); |
2187 | assert(s->main_command->command_next); | |
2188 | assert(s->type == SERVICE_ONESHOT); | |
34e9ba66 | 2189 | |
867b3b7d | 2190 | s->main_command = s->main_command->command_next; |
34e9ba66 LP |
2191 | service_unwatch_main_pid(s); |
2192 | ||
ecedd90f LP |
2193 | r = service_spawn(s, |
2194 | s->main_command, | |
21b2ce39 | 2195 | s->timeout_start_usec, |
1703fa41 | 2196 | EXEC_PASS_FDS|EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_SET_WATCHDOG, |
ecedd90f LP |
2197 | &pid); |
2198 | if (r < 0) | |
34e9ba66 LP |
2199 | goto fail; |
2200 | ||
2201 | service_set_main_pid(s, pid); | |
2202 | ||
2203 | return; | |
2204 | ||
2205 | fail: | |
f2341e0a | 2206 | log_unit_warning_errno(UNIT(s), r, "Failed to run next main task: %m"); |
f42806df | 2207 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
34e9ba66 LP |
2208 | } |
2209 | ||
87f0e418 LP |
2210 | static int service_start(Unit *u) { |
2211 | Service *s = SERVICE(u); | |
07299350 | 2212 | int r; |
5cb5a6ff LP |
2213 | |
2214 | assert(s); | |
2215 | ||
034c6ed7 LP |
2216 | /* We cannot fulfill this request right now, try again later |
2217 | * please! */ | |
a00973af LP |
2218 | if (IN_SET(s->state, |
2219 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, | |
2220 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) | |
5cb5a6ff LP |
2221 | return -EAGAIN; |
2222 | ||
034c6ed7 | 2223 | /* Already on it! */ |
a00973af | 2224 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST)) |
034c6ed7 LP |
2225 | return 0; |
2226 | ||
2e9d6c12 | 2227 | /* A service that will be restarted must be stopped first to |
7f2cddae | 2228 | * trigger BindsTo and/or OnFailure dependencies. If a user |
2e9d6c12 | 2229 | * does not want to wait for the holdoff time to elapse, the |
d4943dc7 LP |
2230 | * service should be manually restarted, not started. We |
2231 | * simply return EAGAIN here, so that any start jobs stay | |
2232 | * queued, and assume that the auto restart timer will | |
2233 | * eventually trigger the restart. */ | |
2234 | if (s->state == SERVICE_AUTO_RESTART) | |
a8bb2e65 | 2235 | return -EAGAIN; |
2e9d6c12 | 2236 | |
a00973af | 2237 | assert(IN_SET(s->state, SERVICE_DEAD, SERVICE_FAILED)); |
5cb5a6ff | 2238 | |
07299350 LP |
2239 | /* Make sure we don't enter a busy loop of some kind. */ |
2240 | r = unit_start_limit_test(u); | |
2241 | if (r < 0) { | |
2242 | service_enter_dead(s, SERVICE_FAILURE_START_LIMIT_HIT, false); | |
2243 | return r; | |
2244 | } | |
2245 | ||
4b58153d LP |
2246 | r = unit_acquire_invocation_id(u); |
2247 | if (r < 0) | |
2248 | return r; | |
2249 | ||
f42806df LP |
2250 | s->result = SERVICE_SUCCESS; |
2251 | s->reload_result = SERVICE_SUCCESS; | |
034c6ed7 | 2252 | s->main_pid_known = false; |
6dfa5494 | 2253 | s->main_pid_alien = false; |
47342320 | 2254 | s->forbid_restart = false; |
3c7416b6 LP |
2255 | |
2256 | u->reset_accounting = true; | |
034c6ed7 | 2257 | |
a1e58e8e | 2258 | s->status_text = mfree(s->status_text); |
8cfdb077 LP |
2259 | s->status_errno = 0; |
2260 | ||
308d72dc LP |
2261 | s->notify_state = NOTIFY_UNKNOWN; |
2262 | ||
2787d83c M |
2263 | s->watchdog_override_enable = false; |
2264 | s->watchdog_override_usec = 0; | |
2265 | ||
7a0019d3 LP |
2266 | /* This is not an automatic restart? Flush the restart counter then */ |
2267 | if (s->flush_n_restarts) { | |
2268 | s->n_restarts = 0; | |
2269 | s->flush_n_restarts = false; | |
2270 | } | |
2271 | ||
034c6ed7 | 2272 | service_enter_start_pre(s); |
82a2b6bb | 2273 | return 1; |
5cb5a6ff LP |
2274 | } |
2275 | ||
87f0e418 LP |
2276 | static int service_stop(Unit *u) { |
2277 | Service *s = SERVICE(u); | |
5cb5a6ff LP |
2278 | |
2279 | assert(s); | |
2280 | ||
a509f0e6 | 2281 | /* Don't create restart jobs from manual stops. */ |
47342320 | 2282 | s->forbid_restart = true; |
034c6ed7 | 2283 | |
e537352b | 2284 | /* Already on it */ |
a00973af LP |
2285 | if (IN_SET(s->state, |
2286 | SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, | |
2287 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) | |
e537352b LP |
2288 | return 0; |
2289 | ||
f0c7b229 | 2290 | /* A restart will be scheduled or is in progress. */ |
034c6ed7 | 2291 | if (s->state == SERVICE_AUTO_RESTART) { |
0c7f15b3 | 2292 | service_set_state(s, SERVICE_DEAD); |
034c6ed7 LP |
2293 | return 0; |
2294 | } | |
2295 | ||
3f6c78dc LP |
2296 | /* If there's already something running we go directly into |
2297 | * kill mode. */ | |
a00973af | 2298 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RELOAD)) { |
f42806df | 2299 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
3f6c78dc LP |
2300 | return 0; |
2301 | } | |
5cb5a6ff | 2302 | |
a00973af | 2303 | assert(IN_SET(s->state, SERVICE_RUNNING, SERVICE_EXITED)); |
3a762661 | 2304 | |
f42806df | 2305 | service_enter_stop(s, SERVICE_SUCCESS); |
82a2b6bb | 2306 | return 1; |
5cb5a6ff LP |
2307 | } |
2308 | ||
87f0e418 LP |
2309 | static int service_reload(Unit *u) { |
2310 | Service *s = SERVICE(u); | |
034c6ed7 LP |
2311 | |
2312 | assert(s); | |
2313 | ||
3742095b | 2314 | assert(IN_SET(s->state, SERVICE_RUNNING, SERVICE_EXITED)); |
034c6ed7 LP |
2315 | |
2316 | service_enter_reload(s); | |
2d018ae2 | 2317 | return 1; |
5cb5a6ff LP |
2318 | } |
2319 | ||
44a6b1b6 | 2320 | _pure_ static bool service_can_reload(Unit *u) { |
87f0e418 | 2321 | Service *s = SERVICE(u); |
034c6ed7 LP |
2322 | |
2323 | assert(s); | |
2324 | ||
2325 | return !!s->exec_command[SERVICE_EXEC_RELOAD]; | |
2326 | } | |
2327 | ||
e266c068 MS |
2328 | static unsigned service_exec_command_index(Unit *u, ServiceExecCommand id, ExecCommand *current) { |
2329 | Service *s = SERVICE(u); | |
2330 | unsigned idx = 0; | |
2331 | ExecCommand *first, *c; | |
2332 | ||
2333 | assert(s); | |
2334 | ||
2335 | first = s->exec_command[id]; | |
2336 | ||
2337 | /* Figure out where we are in the list by walking back to the beginning */ | |
2338 | for (c = current; c != first; c = c->command_prev) | |
2339 | idx++; | |
2340 | ||
2341 | return idx; | |
2342 | } | |
2343 | ||
2344 | static int service_serialize_exec_command(Unit *u, FILE *f, ExecCommand *command) { | |
2345 | Service *s = SERVICE(u); | |
2346 | ServiceExecCommand id; | |
2347 | unsigned idx; | |
2348 | const char *type; | |
2349 | char **arg; | |
e266c068 MS |
2350 | _cleanup_free_ char *args = NULL, *p = NULL; |
2351 | size_t allocated = 0, length = 0; | |
2352 | ||
2353 | assert(s); | |
2354 | assert(f); | |
2355 | ||
2356 | if (!command) | |
2357 | return 0; | |
2358 | ||
2359 | if (command == s->control_command) { | |
2360 | type = "control"; | |
2361 | id = s->control_command_id; | |
2362 | } else { | |
2363 | type = "main"; | |
2364 | id = SERVICE_EXEC_START; | |
2365 | } | |
2366 | ||
2367 | idx = service_exec_command_index(u, id, command); | |
2368 | ||
2369 | STRV_FOREACH(arg, command->argv) { | |
2370 | size_t n; | |
2371 | _cleanup_free_ char *e = NULL; | |
2372 | ||
2373 | e = xescape(*arg, WHITESPACE); | |
2374 | if (!e) | |
2375 | return -ENOMEM; | |
2376 | ||
2377 | n = strlen(e); | |
2378 | if (!GREEDY_REALLOC(args, allocated, length + 1 + n + 1)) | |
2379 | return -ENOMEM; | |
2380 | ||
2381 | if (length > 0) | |
2382 | args[length++] = ' '; | |
2383 | ||
2384 | memcpy(args + length, e, n); | |
2385 | length += n; | |
2386 | } | |
2387 | ||
2388 | if (!GREEDY_REALLOC(args, allocated, length + 1)) | |
2389 | return -ENOMEM; | |
2390 | args[length++] = 0; | |
2391 | ||
2392 | p = xescape(command->path, WHITESPACE); | |
2393 | if (!p) | |
2394 | return -ENOMEM; | |
2395 | ||
2396 | fprintf(f, "%s-command=%s %u %s %s\n", type, service_exec_command_to_string(id), idx, p, args); | |
2397 | ||
2398 | return 0; | |
2399 | } | |
2400 | ||
a16e1123 LP |
2401 | static int service_serialize(Unit *u, FILE *f, FDSet *fds) { |
2402 | Service *s = SERVICE(u); | |
2339fc93 | 2403 | ServiceFDStore *fs; |
a34ceba6 | 2404 | int r; |
a16e1123 LP |
2405 | |
2406 | assert(u); | |
2407 | assert(f); | |
2408 | assert(fds); | |
2409 | ||
2410 | unit_serialize_item(u, f, "state", service_state_to_string(s->state)); | |
f42806df LP |
2411 | unit_serialize_item(u, f, "result", service_result_to_string(s->result)); |
2412 | unit_serialize_item(u, f, "reload-result", service_result_to_string(s->reload_result)); | |
a16e1123 LP |
2413 | |
2414 | if (s->control_pid > 0) | |
f06db334 | 2415 | unit_serialize_item_format(u, f, "control-pid", PID_FMT, s->control_pid); |
a16e1123 | 2416 | |
5925dd3c | 2417 | if (s->main_pid_known && s->main_pid > 0) |
ccd06097 | 2418 | unit_serialize_item_format(u, f, "main-pid", PID_FMT, s->main_pid); |
a16e1123 LP |
2419 | |
2420 | unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known)); | |
de1d4f9b | 2421 | unit_serialize_item(u, f, "bus-name-good", yes_no(s->bus_name_good)); |
d8ccf5fd | 2422 | unit_serialize_item(u, f, "bus-name-owner", s->bus_name_owner); |
a16e1123 | 2423 | |
7a0019d3 | 2424 | unit_serialize_item_format(u, f, "n-restarts", "%u", s->n_restarts); |
7f923884 | 2425 | unit_serialize_item(u, f, "flush-n-restarts", yes_no(s->flush_n_restarts)); |
7a0019d3 | 2426 | |
a34ceba6 LP |
2427 | r = unit_serialize_item_escaped(u, f, "status-text", s->status_text); |
2428 | if (r < 0) | |
2429 | return r; | |
3a2776bc | 2430 | |
e266c068 MS |
2431 | service_serialize_exec_command(u, f, s->control_command); |
2432 | service_serialize_exec_command(u, f, s->main_command); | |
a16e1123 | 2433 | |
a34ceba6 LP |
2434 | r = unit_serialize_item_fd(u, f, fds, "stdin-fd", s->stdin_fd); |
2435 | if (r < 0) | |
2436 | return r; | |
2437 | r = unit_serialize_item_fd(u, f, fds, "stdout-fd", s->stdout_fd); | |
2438 | if (r < 0) | |
2439 | return r; | |
2440 | r = unit_serialize_item_fd(u, f, fds, "stderr-fd", s->stderr_fd); | |
2441 | if (r < 0) | |
2442 | return r; | |
e44da745 | 2443 | |
9dfb64f8 ZJS |
2444 | if (UNIT_ISSET(s->accept_socket)) { |
2445 | r = unit_serialize_item(u, f, "accept-socket", UNIT_DEREF(s->accept_socket)->id); | |
2446 | if (r < 0) | |
2447 | return r; | |
2448 | } | |
2449 | ||
a34ceba6 | 2450 | r = unit_serialize_item_fd(u, f, fds, "socket-fd", s->socket_fd); |
a34ceba6 LP |
2451 | if (r < 0) |
2452 | return r; | |
e44da745 | 2453 | |
2339fc93 | 2454 | LIST_FOREACH(fd_store, fs, s->fd_store) { |
8dd4c05b | 2455 | _cleanup_free_ char *c = NULL; |
2339fc93 LP |
2456 | int copy; |
2457 | ||
2458 | copy = fdset_put_dup(fds, fs->fd); | |
2459 | if (copy < 0) | |
2460 | return copy; | |
2461 | ||
8dd4c05b LP |
2462 | c = cescape(fs->fdname); |
2463 | ||
2464 | unit_serialize_item_format(u, f, "fd-store-fd", "%i %s", copy, strempty(c)); | |
2339fc93 LP |
2465 | } |
2466 | ||
ecdbca40 | 2467 | if (s->main_exec_status.pid > 0) { |
f06db334 LP |
2468 | unit_serialize_item_format(u, f, "main-exec-status-pid", PID_FMT, s->main_exec_status.pid); |
2469 | dual_timestamp_serialize(f, "main-exec-status-start", &s->main_exec_status.start_timestamp); | |
2470 | dual_timestamp_serialize(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp); | |
ecdbca40 | 2471 | |
799fd0fd | 2472 | if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) { |
f06db334 LP |
2473 | unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code); |
2474 | unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status); | |
ecdbca40 LP |
2475 | } |
2476 | } | |
f06db334 | 2477 | |
36b693a6 | 2478 | dual_timestamp_serialize(f, "watchdog-timestamp", &s->watchdog_timestamp); |
ecdbca40 | 2479 | |
a34ceba6 | 2480 | unit_serialize_item(u, f, "forbid-restart", yes_no(s->forbid_restart)); |
6aca9a58 | 2481 | |
2787d83c M |
2482 | if (s->watchdog_override_enable) |
2483 | unit_serialize_item_format(u, f, "watchdog-override-usec", USEC_FMT, s->watchdog_override_usec); | |
2484 | ||
a16e1123 LP |
2485 | return 0; |
2486 | } | |
2487 | ||
e266c068 MS |
2488 | static int service_deserialize_exec_command(Unit *u, const char *key, const char *value) { |
2489 | Service *s = SERVICE(u); | |
2490 | int r; | |
2491 | unsigned idx = 0, i; | |
2492 | bool control, found = false; | |
2493 | ServiceExecCommand id = _SERVICE_EXEC_COMMAND_INVALID; | |
2494 | ExecCommand *command = NULL; | |
6eeec374 | 2495 | _cleanup_free_ char *path = NULL; |
e266c068 MS |
2496 | _cleanup_strv_free_ char **argv = NULL; |
2497 | ||
2498 | enum ExecCommandState { | |
2499 | STATE_EXEC_COMMAND_TYPE, | |
2500 | STATE_EXEC_COMMAND_INDEX, | |
2501 | STATE_EXEC_COMMAND_PATH, | |
2502 | STATE_EXEC_COMMAND_ARGS, | |
2503 | _STATE_EXEC_COMMAND_MAX, | |
2504 | _STATE_EXEC_COMMAND_INVALID = -1, | |
2505 | } state; | |
2506 | ||
2507 | assert(s); | |
2508 | assert(key); | |
2509 | assert(value); | |
2510 | ||
2511 | control = streq(key, "control-command"); | |
2512 | ||
2513 | state = STATE_EXEC_COMMAND_TYPE; | |
2514 | ||
2515 | for (;;) { | |
2516 | _cleanup_free_ char *arg = NULL; | |
2517 | ||
2518 | r = extract_first_word(&value, &arg, NULL, EXTRACT_CUNESCAPE); | |
2519 | if (r == 0) | |
2520 | break; | |
2521 | else if (r < 0) | |
2522 | return r; | |
2523 | ||
2524 | switch (state) { | |
2525 | case STATE_EXEC_COMMAND_TYPE: | |
2526 | id = service_exec_command_from_string(arg); | |
2527 | if (id < 0) | |
2528 | return -EINVAL; | |
2529 | ||
2530 | state = STATE_EXEC_COMMAND_INDEX; | |
2531 | break; | |
2532 | case STATE_EXEC_COMMAND_INDEX: | |
2533 | r = safe_atou(arg, &idx); | |
2534 | if (r < 0) | |
2535 | return -EINVAL; | |
2536 | ||
2537 | state = STATE_EXEC_COMMAND_PATH; | |
2538 | break; | |
2539 | case STATE_EXEC_COMMAND_PATH: | |
ae2a15bc | 2540 | path = TAKE_PTR(arg); |
e266c068 MS |
2541 | state = STATE_EXEC_COMMAND_ARGS; |
2542 | ||
2543 | if (!path_is_absolute(path)) | |
2544 | return -EINVAL; | |
2545 | break; | |
2546 | case STATE_EXEC_COMMAND_ARGS: | |
2547 | r = strv_extend(&argv, arg); | |
2548 | if (r < 0) | |
2549 | return -ENOMEM; | |
2550 | break; | |
2551 | default: | |
2552 | assert_not_reached("Unknown error at deserialization of exec command"); | |
2553 | break; | |
2554 | } | |
2555 | } | |
2556 | ||
2557 | if (state != STATE_EXEC_COMMAND_ARGS) | |
2558 | return -EINVAL; | |
2559 | ||
2560 | /* Let's check whether exec command on given offset matches data that we just deserialized */ | |
2561 | for (command = s->exec_command[id], i = 0; command; command = command->command_next, i++) { | |
2562 | if (i != idx) | |
2563 | continue; | |
2564 | ||
2565 | found = strv_equal(argv, command->argv) && streq(command->path, path); | |
2566 | break; | |
2567 | } | |
2568 | ||
2569 | if (!found) { | |
2570 | /* Command at the index we serialized is different, let's look for command that exactly | |
2571 | * matches but is on different index. If there is no such command we will not resume execution. */ | |
2572 | for (command = s->exec_command[id]; command; command = command->command_next) | |
2573 | if (strv_equal(command->argv, argv) && streq(command->path, path)) | |
2574 | break; | |
2575 | } | |
2576 | ||
2577 | if (command && control) | |
2578 | s->control_command = command; | |
2579 | else if (command) | |
2580 | s->main_command = command; | |
2581 | else | |
2582 | log_unit_warning(u, "Current command vanished from the unit file, execution of the command list won't be resumed."); | |
2583 | ||
2584 | return 0; | |
2585 | } | |
2586 | ||
a16e1123 LP |
2587 | static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { |
2588 | Service *s = SERVICE(u); | |
2339fc93 | 2589 | int r; |
a16e1123 LP |
2590 | |
2591 | assert(u); | |
2592 | assert(key); | |
2593 | assert(value); | |
2594 | assert(fds); | |
2595 | ||
2596 | if (streq(key, "state")) { | |
2597 | ServiceState state; | |
2598 | ||
117dcc57 ZJS |
2599 | state = service_state_from_string(value); |
2600 | if (state < 0) | |
f2341e0a | 2601 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
2602 | else |
2603 | s->deserialized_state = state; | |
f42806df LP |
2604 | } else if (streq(key, "result")) { |
2605 | ServiceResult f; | |
2606 | ||
2607 | f = service_result_from_string(value); | |
2608 | if (f < 0) | |
f2341e0a | 2609 | log_unit_debug(u, "Failed to parse result value: %s", value); |
f42806df LP |
2610 | else if (f != SERVICE_SUCCESS) |
2611 | s->result = f; | |
2612 | ||
2613 | } else if (streq(key, "reload-result")) { | |
2614 | ServiceResult f; | |
2615 | ||
2616 | f = service_result_from_string(value); | |
2617 | if (f < 0) | |
f2341e0a | 2618 | log_unit_debug(u, "Failed to parse reload result value: %s", value); |
f42806df LP |
2619 | else if (f != SERVICE_SUCCESS) |
2620 | s->reload_result = f; | |
a16e1123 | 2621 | |
a16e1123 | 2622 | } else if (streq(key, "control-pid")) { |
5925dd3c | 2623 | pid_t pid; |
a16e1123 | 2624 | |
e364ad06 | 2625 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2626 | log_unit_debug(u, "Failed to parse control-pid value: %s", value); |
a16e1123 | 2627 | else |
e55224ca | 2628 | s->control_pid = pid; |
a16e1123 | 2629 | } else if (streq(key, "main-pid")) { |
5925dd3c | 2630 | pid_t pid; |
a16e1123 | 2631 | |
e364ad06 | 2632 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2633 | log_unit_debug(u, "Failed to parse main-pid value: %s", value); |
eabd3e56 LP |
2634 | else |
2635 | (void) service_set_main_pid(s, pid); | |
a16e1123 LP |
2636 | } else if (streq(key, "main-pid-known")) { |
2637 | int b; | |
2638 | ||
117dcc57 ZJS |
2639 | b = parse_boolean(value); |
2640 | if (b < 0) | |
f2341e0a | 2641 | log_unit_debug(u, "Failed to parse main-pid-known value: %s", value); |
a16e1123 LP |
2642 | else |
2643 | s->main_pid_known = b; | |
de1d4f9b WF |
2644 | } else if (streq(key, "bus-name-good")) { |
2645 | int b; | |
2646 | ||
2647 | b = parse_boolean(value); | |
2648 | if (b < 0) | |
2649 | log_unit_debug(u, "Failed to parse bus-name-good value: %s", value); | |
2650 | else | |
2651 | s->bus_name_good = b; | |
d8ccf5fd DM |
2652 | } else if (streq(key, "bus-name-owner")) { |
2653 | r = free_and_strdup(&s->bus_name_owner, value); | |
2654 | if (r < 0) | |
2655 | log_unit_error_errno(u, r, "Unable to deserialize current bus owner %s: %m", value); | |
3a2776bc LP |
2656 | } else if (streq(key, "status-text")) { |
2657 | char *t; | |
2658 | ||
f2341e0a LP |
2659 | r = cunescape(value, 0, &t); |
2660 | if (r < 0) | |
2661 | log_unit_debug_errno(u, r, "Failed to unescape status text: %s", value); | |
117dcc57 | 2662 | else { |
3a2776bc LP |
2663 | free(s->status_text); |
2664 | s->status_text = t; | |
2665 | } | |
2666 | ||
9dfb64f8 ZJS |
2667 | } else if (streq(key, "accept-socket")) { |
2668 | Unit *socket; | |
2669 | ||
2670 | r = manager_load_unit(u->manager, value, NULL, NULL, &socket); | |
2671 | if (r < 0) | |
2672 | log_unit_debug_errno(u, r, "Failed to load accept-socket unit: %s", value); | |
2673 | else { | |
7f7d01ed | 2674 | unit_ref_set(&s->accept_socket, u, socket); |
9dfb64f8 ZJS |
2675 | SOCKET(socket)->n_connections++; |
2676 | } | |
2677 | ||
a16e1123 LP |
2678 | } else if (streq(key, "socket-fd")) { |
2679 | int fd; | |
2680 | ||
2681 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 2682 | log_unit_debug(u, "Failed to parse socket-fd value: %s", value); |
a16e1123 | 2683 | else { |
574634bc | 2684 | asynchronous_close(s->socket_fd); |
a16e1123 LP |
2685 | s->socket_fd = fdset_remove(fds, fd); |
2686 | } | |
2339fc93 | 2687 | } else if (streq(key, "fd-store-fd")) { |
8dd4c05b LP |
2688 | const char *fdv; |
2689 | size_t pf; | |
2339fc93 LP |
2690 | int fd; |
2691 | ||
8dd4c05b LP |
2692 | pf = strcspn(value, WHITESPACE); |
2693 | fdv = strndupa(value, pf); | |
2694 | ||
2695 | if (safe_atoi(fdv, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 2696 | log_unit_debug(u, "Failed to parse fd-store-fd value: %s", value); |
2339fc93 | 2697 | else { |
8dd4c05b LP |
2698 | _cleanup_free_ char *t = NULL; |
2699 | const char *fdn; | |
2700 | ||
2701 | fdn = value + pf; | |
2702 | fdn += strspn(fdn, WHITESPACE); | |
2703 | (void) cunescape(fdn, 0, &t); | |
2704 | ||
2705 | r = service_add_fd_store(s, fd, t); | |
2339fc93 | 2706 | if (r < 0) |
f2341e0a | 2707 | log_unit_error_errno(u, r, "Failed to add fd to store: %m"); |
9021ff17 | 2708 | else |
2339fc93 LP |
2709 | fdset_remove(fds, fd); |
2710 | } | |
2711 | ||
ecdbca40 LP |
2712 | } else if (streq(key, "main-exec-status-pid")) { |
2713 | pid_t pid; | |
2714 | ||
e364ad06 | 2715 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2716 | log_unit_debug(u, "Failed to parse main-exec-status-pid value: %s", value); |
ecdbca40 LP |
2717 | else |
2718 | s->main_exec_status.pid = pid; | |
2719 | } else if (streq(key, "main-exec-status-code")) { | |
2720 | int i; | |
2721 | ||
e364ad06 | 2722 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 2723 | log_unit_debug(u, "Failed to parse main-exec-status-code value: %s", value); |
ecdbca40 LP |
2724 | else |
2725 | s->main_exec_status.code = i; | |
2726 | } else if (streq(key, "main-exec-status-status")) { | |
2727 | int i; | |
2728 | ||
e364ad06 | 2729 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 2730 | log_unit_debug(u, "Failed to parse main-exec-status-status value: %s", value); |
ecdbca40 LP |
2731 | else |
2732 | s->main_exec_status.status = i; | |
799fd0fd LP |
2733 | } else if (streq(key, "main-exec-status-start")) |
2734 | dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp); | |
2735 | else if (streq(key, "main-exec-status-exit")) | |
2736 | dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp); | |
a6927d7f MO |
2737 | else if (streq(key, "watchdog-timestamp")) |
2738 | dual_timestamp_deserialize(value, &s->watchdog_timestamp); | |
613b411c | 2739 | else if (streq(key, "forbid-restart")) { |
6aca9a58 SE |
2740 | int b; |
2741 | ||
2742 | b = parse_boolean(value); | |
2743 | if (b < 0) | |
f2341e0a | 2744 | log_unit_debug(u, "Failed to parse forbid-restart value: %s", value); |
6aca9a58 SE |
2745 | else |
2746 | s->forbid_restart = b; | |
a34ceba6 LP |
2747 | } else if (streq(key, "stdin-fd")) { |
2748 | int fd; | |
2749 | ||
2750 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2751 | log_unit_debug(u, "Failed to parse stdin-fd value: %s", value); | |
2752 | else { | |
2753 | asynchronous_close(s->stdin_fd); | |
2754 | s->stdin_fd = fdset_remove(fds, fd); | |
1e22b5cd | 2755 | s->exec_context.stdio_as_fds = true; |
a34ceba6 LP |
2756 | } |
2757 | } else if (streq(key, "stdout-fd")) { | |
2758 | int fd; | |
2759 | ||
2760 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2761 | log_unit_debug(u, "Failed to parse stdout-fd value: %s", value); | |
2762 | else { | |
2763 | asynchronous_close(s->stdout_fd); | |
2764 | s->stdout_fd = fdset_remove(fds, fd); | |
1e22b5cd | 2765 | s->exec_context.stdio_as_fds = true; |
a34ceba6 LP |
2766 | } |
2767 | } else if (streq(key, "stderr-fd")) { | |
2768 | int fd; | |
2769 | ||
2770 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2771 | log_unit_debug(u, "Failed to parse stderr-fd value: %s", value); | |
2772 | else { | |
2773 | asynchronous_close(s->stderr_fd); | |
2774 | s->stderr_fd = fdset_remove(fds, fd); | |
1e22b5cd | 2775 | s->exec_context.stdio_as_fds = true; |
a34ceba6 | 2776 | } |
2787d83c M |
2777 | } else if (streq(key, "watchdog-override-usec")) { |
2778 | usec_t watchdog_override_usec; | |
2779 | if (timestamp_deserialize(value, &watchdog_override_usec) < 0) | |
2780 | log_unit_debug(u, "Failed to parse watchdog_override_usec value: %s", value); | |
2781 | else { | |
2782 | s->watchdog_override_enable = true; | |
2783 | s->watchdog_override_usec = watchdog_override_usec; | |
2784 | } | |
e266c068 MS |
2785 | } else if (STR_IN_SET(key, "main-command", "control-command")) { |
2786 | r = service_deserialize_exec_command(u, key, value); | |
2787 | if (r < 0) | |
2788 | log_unit_debug_errno(u, r, "Failed to parse serialized command \"%s\": %m", value); | |
7a0019d3 LP |
2789 | |
2790 | } else if (streq(key, "n-restarts")) { | |
2791 | r = safe_atou(value, &s->n_restarts); | |
2792 | if (r < 0) | |
2793 | log_unit_debug_errno(u, r, "Failed to parse serialized restart counter '%s': %m", value); | |
2794 | ||
2795 | } else if (streq(key, "flush-n-restarts")) { | |
2796 | r = parse_boolean(value); | |
2797 | if (r < 0) | |
2798 | log_unit_debug_errno(u, r, "Failed to parse serialized flush restart counter setting '%s': %m", value); | |
2799 | else | |
2800 | s->flush_n_restarts = r; | |
c17ec25e | 2801 | } else |
f2341e0a | 2802 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
2803 | |
2804 | return 0; | |
2805 | } | |
2806 | ||
44a6b1b6 | 2807 | _pure_ static UnitActiveState service_active_state(Unit *u) { |
e056b01d LP |
2808 | const UnitActiveState *table; |
2809 | ||
87f0e418 | 2810 | assert(u); |
5cb5a6ff | 2811 | |
e056b01d LP |
2812 | table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
2813 | ||
2814 | return table[SERVICE(u)->state]; | |
034c6ed7 LP |
2815 | } |
2816 | ||
10a94420 LP |
2817 | static const char *service_sub_state_to_string(Unit *u) { |
2818 | assert(u); | |
2819 | ||
2820 | return service_state_to_string(SERVICE(u)->state); | |
2821 | } | |
2822 | ||
f2f725e5 | 2823 | static bool service_may_gc(Unit *u) { |
701cc384 LP |
2824 | Service *s = SERVICE(u); |
2825 | ||
2826 | assert(s); | |
2827 | ||
e98b2fbb | 2828 | /* Never clean up services that still have a process around, even if the service is formally dead. Note that |
f2f725e5 | 2829 | * unit_may_gc() already checked our cgroup for us, we just check our two additional PIDs, too, in case they |
e98b2fbb LP |
2830 | * have moved outside of the cgroup. */ |
2831 | ||
2832 | if (main_pid_good(s) > 0 || | |
6d55002a | 2833 | control_pid_good(s) > 0) |
f2f725e5 | 2834 | return false; |
6d55002a | 2835 | |
f2f725e5 | 2836 | return true; |
6d55002a LP |
2837 | } |
2838 | ||
3a111838 MS |
2839 | static int service_retry_pid_file(Service *s) { |
2840 | int r; | |
2841 | ||
2842 | assert(s->pid_file); | |
3742095b | 2843 | assert(IN_SET(s->state, SERVICE_START, SERVICE_START_POST)); |
3a111838 MS |
2844 | |
2845 | r = service_load_pid_file(s, false); | |
2846 | if (r < 0) | |
2847 | return r; | |
2848 | ||
2849 | service_unwatch_pid_file(s); | |
2850 | ||
f42806df | 2851 | service_enter_running(s, SERVICE_SUCCESS); |
3a111838 MS |
2852 | return 0; |
2853 | } | |
2854 | ||
2855 | static int service_watch_pid_file(Service *s) { | |
2856 | int r; | |
2857 | ||
f2341e0a | 2858 | log_unit_debug(UNIT(s), "Setting watch for PID file %s", s->pid_file_pathspec->path); |
8bb2d17d | 2859 | |
718db961 | 2860 | r = path_spec_watch(s->pid_file_pathspec, service_dispatch_io); |
3a111838 MS |
2861 | if (r < 0) |
2862 | goto fail; | |
2863 | ||
2864 | /* the pidfile might have appeared just before we set the watch */ | |
f2341e0a | 2865 | log_unit_debug(UNIT(s), "Trying to read PID file %s in case it changed", s->pid_file_pathspec->path); |
3a111838 MS |
2866 | service_retry_pid_file(s); |
2867 | ||
2868 | return 0; | |
2869 | fail: | |
f2341e0a | 2870 | log_unit_error_errno(UNIT(s), r, "Failed to set a watch for PID file %s: %m", s->pid_file_pathspec->path); |
3a111838 MS |
2871 | service_unwatch_pid_file(s); |
2872 | return r; | |
2873 | } | |
2874 | ||
2875 | static int service_demand_pid_file(Service *s) { | |
2876 | PathSpec *ps; | |
2877 | ||
2878 | assert(s->pid_file); | |
2879 | assert(!s->pid_file_pathspec); | |
2880 | ||
2881 | ps = new0(PathSpec, 1); | |
2882 | if (!ps) | |
2883 | return -ENOMEM; | |
2884 | ||
718db961 | 2885 | ps->unit = UNIT(s); |
3a111838 MS |
2886 | ps->path = strdup(s->pid_file); |
2887 | if (!ps->path) { | |
2888 | free(ps); | |
2889 | return -ENOMEM; | |
2890 | } | |
2891 | ||
858d36c1 | 2892 | path_simplify(ps->path, false); |
3a111838 MS |
2893 | |
2894 | /* PATH_CHANGED would not be enough. There are daemons (sendmail) that | |
2895 | * keep their PID file open all the time. */ | |
2896 | ps->type = PATH_MODIFIED; | |
2897 | ps->inotify_fd = -1; | |
2898 | ||
2899 | s->pid_file_pathspec = ps; | |
2900 | ||
2901 | return service_watch_pid_file(s); | |
2902 | } | |
2903 | ||
718db961 | 2904 | static int service_dispatch_io(sd_event_source *source, int fd, uint32_t events, void *userdata) { |
e14c2802 LP |
2905 | PathSpec *p = userdata; |
2906 | Service *s; | |
2907 | ||
2908 | assert(p); | |
2909 | ||
2910 | s = SERVICE(p->unit); | |
3a111838 MS |
2911 | |
2912 | assert(s); | |
2913 | assert(fd >= 0); | |
3742095b | 2914 | assert(IN_SET(s->state, SERVICE_START, SERVICE_START_POST)); |
3a111838 | 2915 | assert(s->pid_file_pathspec); |
57020a3a | 2916 | assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd)); |
3a111838 | 2917 | |
f2341e0a | 2918 | log_unit_debug(UNIT(s), "inotify event"); |
3a111838 | 2919 | |
e14c2802 | 2920 | if (path_spec_fd_event(p, events) < 0) |
3a111838 MS |
2921 | goto fail; |
2922 | ||
2923 | if (service_retry_pid_file(s) == 0) | |
718db961 | 2924 | return 0; |
3a111838 MS |
2925 | |
2926 | if (service_watch_pid_file(s) < 0) | |
2927 | goto fail; | |
2928 | ||
718db961 LP |
2929 | return 0; |
2930 | ||
3a111838 MS |
2931 | fail: |
2932 | service_unwatch_pid_file(s); | |
f42806df | 2933 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
718db961 | 2934 | return 0; |
3a111838 MS |
2935 | } |
2936 | ||
a911bb9a LP |
2937 | static void service_notify_cgroup_empty_event(Unit *u) { |
2938 | Service *s = SERVICE(u); | |
2939 | ||
2940 | assert(u); | |
2941 | ||
f2341e0a | 2942 | log_unit_debug(u, "cgroup is empty"); |
a911bb9a LP |
2943 | |
2944 | switch (s->state) { | |
2945 | ||
2946 | /* Waiting for SIGCHLD is usually more interesting, | |
2947 | * because it includes return codes/signals. Which is | |
2948 | * why we ignore the cgroup events for most cases, | |
2949 | * except when we don't know pid which to expect the | |
2950 | * SIGCHLD for. */ | |
2951 | ||
2952 | case SERVICE_START: | |
3c751b1b LP |
2953 | if (s->type == SERVICE_NOTIFY && |
2954 | main_pid_good(s) == 0 && | |
2955 | control_pid_good(s) == 0) { | |
3d474ef7 | 2956 | /* No chance of getting a ready notification anymore */ |
c3fda31d | 2957 | service_enter_stop_post(s, SERVICE_FAILURE_PROTOCOL); |
71e529fc JW |
2958 | break; |
2959 | } | |
2960 | ||
4831981d | 2961 | _fallthrough_; |
71e529fc | 2962 | case SERVICE_START_POST: |
3c751b1b LP |
2963 | if (s->pid_file_pathspec && |
2964 | main_pid_good(s) == 0 && | |
2965 | control_pid_good(s) == 0) { | |
2966 | ||
3d474ef7 | 2967 | /* Give up hoping for the daemon to write its PID file */ |
f2341e0a | 2968 | log_unit_warning(u, "Daemon never wrote its PID file. Failing."); |
8bb2d17d | 2969 | |
a911bb9a LP |
2970 | service_unwatch_pid_file(s); |
2971 | if (s->state == SERVICE_START) | |
c3fda31d | 2972 | service_enter_stop_post(s, SERVICE_FAILURE_PROTOCOL); |
a911bb9a | 2973 | else |
c35755fb | 2974 | service_enter_stop(s, SERVICE_FAILURE_PROTOCOL); |
a911bb9a LP |
2975 | } |
2976 | break; | |
2977 | ||
2978 | case SERVICE_RUNNING: | |
2979 | /* service_enter_running() will figure out what to do */ | |
2980 | service_enter_running(s, SERVICE_SUCCESS); | |
2981 | break; | |
2982 | ||
db2cb23b | 2983 | case SERVICE_STOP_SIGABRT: |
a911bb9a LP |
2984 | case SERVICE_STOP_SIGTERM: |
2985 | case SERVICE_STOP_SIGKILL: | |
2986 | ||
b13ddbbc | 2987 | if (main_pid_good(s) <= 0 && control_pid_good(s) <= 0) |
a911bb9a LP |
2988 | service_enter_stop_post(s, SERVICE_SUCCESS); |
2989 | ||
2990 | break; | |
2991 | ||
2992 | case SERVICE_STOP_POST: | |
2993 | case SERVICE_FINAL_SIGTERM: | |
2994 | case SERVICE_FINAL_SIGKILL: | |
b13ddbbc | 2995 | if (main_pid_good(s) <= 0 && control_pid_good(s) <= 0) |
a911bb9a LP |
2996 | service_enter_dead(s, SERVICE_SUCCESS, true); |
2997 | ||
2998 | break; | |
2999 | ||
3000 | default: | |
3001 | ; | |
3002 | } | |
3003 | } | |
3004 | ||
87f0e418 | 3005 | static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
5cdabc8d | 3006 | bool notify_dbus = true; |
87f0e418 | 3007 | Service *s = SERVICE(u); |
f42806df | 3008 | ServiceResult f; |
5cb5a6ff LP |
3009 | |
3010 | assert(s); | |
034c6ed7 LP |
3011 | assert(pid >= 0); |
3012 | ||
1f0958f6 | 3013 | if (is_clean_exit(code, status, s->type == SERVICE_ONESHOT ? EXIT_CLEAN_COMMAND : EXIT_CLEAN_DAEMON, &s->success_status)) |
f42806df LP |
3014 | f = SERVICE_SUCCESS; |
3015 | else if (code == CLD_EXITED) | |
3016 | f = SERVICE_FAILURE_EXIT_CODE; | |
3017 | else if (code == CLD_KILLED) | |
3018 | f = SERVICE_FAILURE_SIGNAL; | |
3019 | else if (code == CLD_DUMPED) | |
3020 | f = SERVICE_FAILURE_CORE_DUMP; | |
d06dacd0 | 3021 | else |
cfc4eb4c | 3022 | assert_not_reached("Unknown code"); |
034c6ed7 LP |
3023 | |
3024 | if (s->main_pid == pid) { | |
db01f8b3 MS |
3025 | /* Forking services may occasionally move to a new PID. |
3026 | * As long as they update the PID file before exiting the old | |
3027 | * PID, they're fine. */ | |
db256aab | 3028 | if (service_load_pid_file(s, false) > 0) |
db01f8b3 | 3029 | return; |
034c6ed7 | 3030 | |
034c6ed7 | 3031 | s->main_pid = 0; |
6ea832a2 | 3032 | exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status); |
034c6ed7 | 3033 | |
867b3b7d | 3034 | if (s->main_command) { |
fbeefb45 LP |
3035 | /* If this is not a forking service than the |
3036 | * main process got started and hence we copy | |
3037 | * the exit status so that it is recorded both | |
3038 | * as main and as control process exit | |
3039 | * status */ | |
3040 | ||
867b3b7d | 3041 | s->main_command->exec_status = s->main_exec_status; |
b708e7ce | 3042 | |
3ed0cd26 | 3043 | if (s->main_command->flags & EXEC_COMMAND_IGNORE_FAILURE) |
f42806df | 3044 | f = SERVICE_SUCCESS; |
fbeefb45 LP |
3045 | } else if (s->exec_command[SERVICE_EXEC_START]) { |
3046 | ||
3047 | /* If this is a forked process, then we should | |
3048 | * ignore the return value if this was | |
3049 | * configured for the starter process */ | |
3050 | ||
3ed0cd26 | 3051 | if (s->exec_command[SERVICE_EXEC_START]->flags & EXEC_COMMAND_IGNORE_FAILURE) |
fbeefb45 | 3052 | f = SERVICE_SUCCESS; |
034c6ed7 LP |
3053 | } |
3054 | ||
5368222d LP |
3055 | /* When this is a successful exit, let's log about the exit code on DEBUG level. If this is a failure |
3056 | * and the process exited on its own via exit(), then let's make this a NOTICE, under the assumption | |
3057 | * that the service already logged the reason at a higher log level on its own. However, if the service | |
3058 | * died due to a signal, then it most likely didn't say anything about any reason, hence let's raise | |
3059 | * our log level to WARNING then. */ | |
3060 | ||
3061 | log_struct(f == SERVICE_SUCCESS ? LOG_DEBUG : | |
3062 | (code == CLD_EXITED ? LOG_NOTICE : LOG_WARNING), | |
f2341e0a LP |
3063 | LOG_UNIT_MESSAGE(u, "Main process exited, code=%s, status=%i/%s", |
3064 | sigchld_code_to_string(code), status, | |
e2cc6eca LP |
3065 | strna(code == CLD_EXITED |
3066 | ? exit_status_to_string(status, EXIT_STATUS_FULL) | |
3067 | : signal_to_string(status))), | |
f2341e0a LP |
3068 | "EXIT_CODE=%s", sigchld_code_to_string(code), |
3069 | "EXIT_STATUS=%i", status, | |
ba360bb0 | 3070 | LOG_UNIT_ID(u), |
a1230ff9 | 3071 | LOG_UNIT_INVOCATION_ID(u)); |
f42806df | 3072 | |
a0fef983 | 3073 | if (s->result == SERVICE_SUCCESS) |
f42806df | 3074 | s->result = f; |
034c6ed7 | 3075 | |
867b3b7d LP |
3076 | if (s->main_command && |
3077 | s->main_command->command_next && | |
b58aeb70 | 3078 | s->type == SERVICE_ONESHOT && |
f42806df | 3079 | f == SERVICE_SUCCESS) { |
034c6ed7 | 3080 | |
34e9ba66 LP |
3081 | /* There is another command to * |
3082 | * execute, so let's do that. */ | |
034c6ed7 | 3083 | |
f2341e0a | 3084 | log_unit_debug(u, "Running next main command for state %s.", service_state_to_string(s->state)); |
f42806df | 3085 | service_run_next_main(s); |
034c6ed7 | 3086 | |
34e9ba66 LP |
3087 | } else { |
3088 | ||
3089 | /* The service exited, so the service is officially | |
3090 | * gone. */ | |
867b3b7d | 3091 | s->main_command = NULL; |
34e9ba66 LP |
3092 | |
3093 | switch (s->state) { | |
3094 | ||
3095 | case SERVICE_START_POST: | |
3096 | case SERVICE_RELOAD: | |
3097 | case SERVICE_STOP: | |
3098 | /* Need to wait until the operation is | |
3099 | * done */ | |
c4653a4d | 3100 | break; |
7d55e835 | 3101 | |
34e9ba66 LP |
3102 | case SERVICE_START: |
3103 | if (s->type == SERVICE_ONESHOT) { | |
3104 | /* This was our main goal, so let's go on */ | |
f42806df | 3105 | if (f == SERVICE_SUCCESS) |
34e9ba66 LP |
3106 | service_enter_start_post(s); |
3107 | else | |
c3fda31d | 3108 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
34e9ba66 | 3109 | break; |
3d474ef7 JW |
3110 | } else if (s->type == SERVICE_NOTIFY) { |
3111 | /* Only enter running through a notification, so that the | |
3112 | * SERVICE_START state signifies that no ready notification | |
3113 | * has been received */ | |
3114 | if (f != SERVICE_SUCCESS) | |
c3fda31d | 3115 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
df66b93f JW |
3116 | else if (!s->remain_after_exit || s->notify_access == NOTIFY_MAIN) |
3117 | /* The service has never been and will never be active */ | |
c3fda31d | 3118 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_PROTOCOL); |
3d474ef7 | 3119 | break; |
34e9ba66 | 3120 | } |
034c6ed7 | 3121 | |
4831981d | 3122 | _fallthrough_; |
34e9ba66 | 3123 | case SERVICE_RUNNING: |
f42806df | 3124 | service_enter_running(s, f); |
34e9ba66 | 3125 | break; |
034c6ed7 | 3126 | |
db2cb23b | 3127 | case SERVICE_STOP_SIGABRT: |
34e9ba66 LP |
3128 | case SERVICE_STOP_SIGTERM: |
3129 | case SERVICE_STOP_SIGKILL: | |
5cb5a6ff | 3130 | |
b13ddbbc | 3131 | if (control_pid_good(s) <= 0) |
f42806df | 3132 | service_enter_stop_post(s, f); |
5cb5a6ff | 3133 | |
34e9ba66 LP |
3134 | /* If there is still a control process, wait for that first */ |
3135 | break; | |
3136 | ||
bf108e55 LP |
3137 | case SERVICE_STOP_POST: |
3138 | case SERVICE_FINAL_SIGTERM: | |
3139 | case SERVICE_FINAL_SIGKILL: | |
3140 | ||
b13ddbbc | 3141 | if (control_pid_good(s) <= 0) |
bf108e55 LP |
3142 | service_enter_dead(s, f, true); |
3143 | break; | |
3144 | ||
34e9ba66 LP |
3145 | default: |
3146 | assert_not_reached("Uh, main process died at wrong time."); | |
3147 | } | |
034c6ed7 | 3148 | } |
5cb5a6ff | 3149 | |
034c6ed7 | 3150 | } else if (s->control_pid == pid) { |
34e9ba66 LP |
3151 | s->control_pid = 0; |
3152 | ||
b708e7ce | 3153 | if (s->control_command) { |
8bb2d17d | 3154 | exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status); |
a16e1123 | 3155 | |
3ed0cd26 | 3156 | if (s->control_command->flags & EXEC_COMMAND_IGNORE_FAILURE) |
f42806df | 3157 | f = SERVICE_SUCCESS; |
b708e7ce LP |
3158 | } |
3159 | ||
f2341e0a LP |
3160 | log_unit_full(u, f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, 0, |
3161 | "Control process exited, code=%s status=%i", | |
3162 | sigchld_code_to_string(code), status); | |
f42806df | 3163 | |
a0fef983 | 3164 | if (s->result == SERVICE_SUCCESS) |
f42806df | 3165 | s->result = f; |
034c6ed7 | 3166 | |
34e9ba66 LP |
3167 | if (s->control_command && |
3168 | s->control_command->command_next && | |
f42806df | 3169 | f == SERVICE_SUCCESS) { |
034c6ed7 LP |
3170 | |
3171 | /* There is another command to * | |
3172 | * execute, so let's do that. */ | |
3173 | ||
f2341e0a | 3174 | log_unit_debug(u, "Running next control command for state %s.", service_state_to_string(s->state)); |
f42806df | 3175 | service_run_next_control(s); |
034c6ed7 | 3176 | |
80876c20 | 3177 | } else { |
034c6ed7 LP |
3178 | /* No further commands for this step, so let's |
3179 | * figure out what to do next */ | |
3180 | ||
a16e1123 LP |
3181 | s->control_command = NULL; |
3182 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
3183 | ||
f2341e0a | 3184 | log_unit_debug(u, "Got final SIGCHLD for state %s.", service_state_to_string(s->state)); |
bd982a8b | 3185 | |
034c6ed7 LP |
3186 | switch (s->state) { |
3187 | ||
3188 | case SERVICE_START_PRE: | |
f42806df | 3189 | if (f == SERVICE_SUCCESS) |
034c6ed7 LP |
3190 | service_enter_start(s); |
3191 | else | |
c3fda31d | 3192 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
034c6ed7 LP |
3193 | break; |
3194 | ||
3195 | case SERVICE_START: | |
bfba3256 LP |
3196 | if (s->type != SERVICE_FORKING) |
3197 | /* Maybe spurious event due to a reload that changed the type? */ | |
3198 | break; | |
034c6ed7 | 3199 | |
f42806df | 3200 | if (f != SERVICE_SUCCESS) { |
c3fda31d | 3201 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
3a111838 MS |
3202 | break; |
3203 | } | |
034c6ed7 | 3204 | |
3a111838 | 3205 | if (s->pid_file) { |
f42806df LP |
3206 | bool has_start_post; |
3207 | int r; | |
3208 | ||
3a111838 MS |
3209 | /* Let's try to load the pid file here if we can. |
3210 | * The PID file might actually be created by a START_POST | |
3211 | * script. In that case don't worry if the loading fails. */ | |
f42806df | 3212 | |
5d904a6a | 3213 | has_start_post = s->exec_command[SERVICE_EXEC_START_POST]; |
f42806df | 3214 | r = service_load_pid_file(s, !has_start_post); |
3a111838 MS |
3215 | if (!has_start_post && r < 0) { |
3216 | r = service_demand_pid_file(s); | |
b13ddbbc | 3217 | if (r < 0 || cgroup_good(s) == 0) |
c3fda31d | 3218 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_PROTOCOL); |
3a111838 MS |
3219 | break; |
3220 | } | |
034c6ed7 | 3221 | } else |
783e05d6 | 3222 | service_search_main_pid(s); |
034c6ed7 | 3223 | |
3a111838 | 3224 | service_enter_start_post(s); |
034c6ed7 LP |
3225 | break; |
3226 | ||
3227 | case SERVICE_START_POST: | |
f42806df | 3228 | if (f != SERVICE_SUCCESS) { |
ce359e98 | 3229 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
2096e009 | 3230 | break; |
034c6ed7 LP |
3231 | } |
3232 | ||
2096e009 | 3233 | if (s->pid_file) { |
f42806df LP |
3234 | int r; |
3235 | ||
3236 | r = service_load_pid_file(s, true); | |
2096e009 MS |
3237 | if (r < 0) { |
3238 | r = service_demand_pid_file(s); | |
b13ddbbc | 3239 | if (r < 0 || cgroup_good(s) == 0) |
c35755fb | 3240 | service_enter_stop(s, SERVICE_FAILURE_PROTOCOL); |
2096e009 MS |
3241 | break; |
3242 | } | |
3243 | } else | |
783e05d6 | 3244 | service_search_main_pid(s); |
2096e009 | 3245 | |
f42806df | 3246 | service_enter_running(s, SERVICE_SUCCESS); |
3185a36b | 3247 | break; |
034c6ed7 LP |
3248 | |
3249 | case SERVICE_RELOAD: | |
7236ce6e ZJS |
3250 | if (f == SERVICE_SUCCESS) |
3251 | if (service_load_pid_file(s, true) < 0) | |
3252 | service_search_main_pid(s); | |
3185a36b | 3253 | |
f42806df LP |
3254 | s->reload_result = f; |
3255 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
3256 | break; |
3257 | ||
3258 | case SERVICE_STOP: | |
f42806df | 3259 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
034c6ed7 LP |
3260 | break; |
3261 | ||
db2cb23b | 3262 | case SERVICE_STOP_SIGABRT: |
034c6ed7 LP |
3263 | case SERVICE_STOP_SIGTERM: |
3264 | case SERVICE_STOP_SIGKILL: | |
3265 | if (main_pid_good(s) <= 0) | |
f42806df | 3266 | service_enter_stop_post(s, f); |
034c6ed7 LP |
3267 | |
3268 | /* If there is still a service | |
3269 | * process around, wait until | |
3270 | * that one quit, too */ | |
3271 | break; | |
3272 | ||
3273 | case SERVICE_STOP_POST: | |
3274 | case SERVICE_FINAL_SIGTERM: | |
3275 | case SERVICE_FINAL_SIGKILL: | |
bf108e55 LP |
3276 | if (main_pid_good(s) <= 0) |
3277 | service_enter_dead(s, f, true); | |
034c6ed7 LP |
3278 | break; |
3279 | ||
3280 | default: | |
3281 | assert_not_reached("Uh, control process died at wrong time."); | |
3282 | } | |
3283 | } | |
5cdabc8d LP |
3284 | } else /* Neither control nor main PID? If so, don't notify about anything */ |
3285 | notify_dbus = false; | |
c4e2ceae LP |
3286 | |
3287 | /* Notify clients about changed exit status */ | |
5cdabc8d LP |
3288 | if (notify_dbus) |
3289 | unit_add_to_dbus_queue(u); | |
a911bb9a | 3290 | |
11aef522 LP |
3291 | /* If we get a SIGCHLD event for one of the processes we were interested in, then we look for others to watch, |
3292 | * under the assumption that we'll sooner or later get a SIGCHLD for them, as the original process we watched | |
3293 | * was probably the parent of them, and they are hence now our children. */ | |
50be4f4a | 3294 | (void) unit_enqueue_rewatch_pids(u); |
034c6ed7 LP |
3295 | } |
3296 | ||
718db961 LP |
3297 | static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
3298 | Service *s = SERVICE(userdata); | |
034c6ed7 LP |
3299 | |
3300 | assert(s); | |
718db961 | 3301 | assert(source == s->timer_event_source); |
034c6ed7 LP |
3302 | |
3303 | switch (s->state) { | |
3304 | ||
3305 | case SERVICE_START_PRE: | |
3306 | case SERVICE_START: | |
f2341e0a | 3307 | log_unit_warning(UNIT(s), "%s operation timed out. Terminating.", s->state == SERVICE_START ? "Start" : "Start-pre"); |
c3fda31d | 3308 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
80876c20 LP |
3309 | break; |
3310 | ||
034c6ed7 | 3311 | case SERVICE_START_POST: |
f2341e0a | 3312 | log_unit_warning(UNIT(s), "Start-post operation timed out. Stopping."); |
ce359e98 | 3313 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3314 | break; |
3315 | ||
36c16a7c LP |
3316 | case SERVICE_RUNNING: |
3317 | log_unit_warning(UNIT(s), "Service reached runtime time limit. Stopping."); | |
3318 | service_enter_stop(s, SERVICE_FAILURE_TIMEOUT); | |
3319 | break; | |
3320 | ||
e2f3b44c | 3321 | case SERVICE_RELOAD: |
089b64d5 | 3322 | log_unit_warning(UNIT(s), "Reload operation timed out. Killing reload process."); |
e9a4f676 | 3323 | service_kill_control_process(s); |
f42806df LP |
3324 | s->reload_result = SERVICE_FAILURE_TIMEOUT; |
3325 | service_enter_running(s, SERVICE_SUCCESS); | |
e2f3b44c LP |
3326 | break; |
3327 | ||
034c6ed7 | 3328 | case SERVICE_STOP: |
f2341e0a | 3329 | log_unit_warning(UNIT(s), "Stopping timed out. Terminating."); |
f42806df | 3330 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3331 | break; |
3332 | ||
db2cb23b | 3333 | case SERVICE_STOP_SIGABRT: |
f2341e0a | 3334 | log_unit_warning(UNIT(s), "State 'stop-sigabrt' timed out. Terminating."); |
2ab2ab7b | 3335 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
db2cb23b UTL |
3336 | break; |
3337 | ||
034c6ed7 | 3338 | case SERVICE_STOP_SIGTERM: |
4819ff03 | 3339 | if (s->kill_context.send_sigkill) { |
f2341e0a | 3340 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Killing."); |
f42806df | 3341 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 3342 | } else { |
f2341e0a | 3343 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Skipping SIGKILL."); |
f42806df | 3344 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
ba035df2 LP |
3345 | } |
3346 | ||
034c6ed7 LP |
3347 | break; |
3348 | ||
3349 | case SERVICE_STOP_SIGKILL: | |
35b8ca3a | 3350 | /* Uh, we sent a SIGKILL and it is still not gone? |
034c6ed7 LP |
3351 | * Must be something we cannot kill, so let's just be |
3352 | * weirded out and continue */ | |
3353 | ||
f2341e0a | 3354 | log_unit_warning(UNIT(s), "Processes still around after SIGKILL. Ignoring."); |
f42806df | 3355 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3356 | break; |
3357 | ||
3358 | case SERVICE_STOP_POST: | |
f2341e0a | 3359 | log_unit_warning(UNIT(s), "State 'stop-post' timed out. Terminating."); |
f42806df | 3360 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3361 | break; |
3362 | ||
3363 | case SERVICE_FINAL_SIGTERM: | |
4819ff03 | 3364 | if (s->kill_context.send_sigkill) { |
f2341e0a | 3365 | log_unit_warning(UNIT(s), "State 'stop-final-sigterm' timed out. Killing."); |
f42806df | 3366 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 3367 | } else { |
f2341e0a | 3368 | log_unit_warning(UNIT(s), "State 'stop-final-sigterm' timed out. Skipping SIGKILL. Entering failed mode."); |
f42806df | 3369 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false); |
ba035df2 LP |
3370 | } |
3371 | ||
034c6ed7 LP |
3372 | break; |
3373 | ||
3374 | case SERVICE_FINAL_SIGKILL: | |
f2341e0a | 3375 | log_unit_warning(UNIT(s), "Processes still around after final SIGKILL. Entering failed mode."); |
f42806df | 3376 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true); |
034c6ed7 LP |
3377 | break; |
3378 | ||
3379 | case SERVICE_AUTO_RESTART: | |
5ce6e7f5 ZJS |
3380 | if (s->restart_usec > 0) { |
3381 | char buf_restart[FORMAT_TIMESPAN_MAX]; | |
3382 | log_unit_info(UNIT(s), | |
3383 | "Service RestartSec=%s expired, scheduling restart.", | |
3384 | format_timespan(buf_restart, sizeof buf_restart, s->restart_usec, USEC_PER_SEC)); | |
3385 | } else | |
3386 | log_unit_info(UNIT(s), | |
3387 | "Service has no hold-off time (RestartSec=0), scheduling restart."); | |
3388 | ||
034c6ed7 LP |
3389 | service_enter_restart(s); |
3390 | break; | |
3391 | ||
3392 | default: | |
3393 | assert_not_reached("Timeout at wrong time."); | |
3394 | } | |
718db961 LP |
3395 | |
3396 | return 0; | |
3397 | } | |
3398 | ||
3399 | static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata) { | |
3400 | Service *s = SERVICE(userdata); | |
a7850c7d | 3401 | char t[FORMAT_TIMESPAN_MAX]; |
2787d83c | 3402 | usec_t watchdog_usec; |
718db961 LP |
3403 | |
3404 | assert(s); | |
3405 | assert(source == s->watchdog_event_source); | |
3406 | ||
2787d83c M |
3407 | watchdog_usec = service_get_watchdog_usec(s); |
3408 | ||
2a12e32e JK |
3409 | if (UNIT(s)->manager->service_watchdogs) { |
3410 | log_unit_error(UNIT(s), "Watchdog timeout (limit %s)!", | |
3411 | format_timespan(t, sizeof(t), watchdog_usec, 1)); | |
8bb2d17d | 3412 | |
2a12e32e JK |
3413 | service_enter_signal(s, SERVICE_STOP_SIGABRT, SERVICE_FAILURE_WATCHDOG); |
3414 | } else | |
3415 | log_unit_warning(UNIT(s), "Watchdog disabled! Ignoring watchdog timeout (limit %s)!", | |
3416 | format_timespan(t, sizeof(t), watchdog_usec, 1)); | |
842129f5 | 3417 | |
718db961 | 3418 | return 0; |
5cb5a6ff LP |
3419 | } |
3420 | ||
e3285237 LP |
3421 | static bool service_notify_message_authorized(Service *s, pid_t pid, char **tags, FDSet *fds) { |
3422 | assert(s); | |
8c47c732 | 3423 | |
c952c6ec | 3424 | if (s->notify_access == NOTIFY_NONE) { |
e3285237 LP |
3425 | log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception is disabled.", pid); |
3426 | return false; | |
3427 | } | |
3428 | ||
3429 | if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) { | |
336c6e46 | 3430 | if (s->main_pid != 0) |
e3285237 | 3431 | 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 | 3432 | else |
e3285237 LP |
3433 | 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); |
3434 | ||
3435 | return false; | |
3436 | } | |
3437 | ||
3438 | if (s->notify_access == NOTIFY_EXEC && pid != s->main_pid && pid != s->control_pid) { | |
6375bd20 | 3439 | if (s->main_pid != 0 && s->control_pid != 0) |
e3285237 | 3440 | 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 |
3441 | pid, s->main_pid, s->control_pid); |
3442 | else if (s->main_pid != 0) | |
e3285237 | 3443 | 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 | 3444 | else if (s->control_pid != 0) |
e3285237 | 3445 | 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 | 3446 | else |
e3285237 LP |
3447 | 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); |
3448 | ||
3449 | return false; | |
9711848f LP |
3450 | } |
3451 | ||
e3285237 LP |
3452 | return true; |
3453 | } | |
3454 | ||
db256aab LP |
3455 | static void service_notify_message( |
3456 | Unit *u, | |
3457 | const struct ucred *ucred, | |
3458 | char **tags, | |
3459 | FDSet *fds) { | |
3460 | ||
e3285237 LP |
3461 | Service *s = SERVICE(u); |
3462 | bool notify_dbus = false; | |
3463 | const char *e; | |
cc2b7b11 | 3464 | char **i; |
db256aab | 3465 | int r; |
e3285237 LP |
3466 | |
3467 | assert(u); | |
db256aab | 3468 | assert(ucred); |
e3285237 | 3469 | |
db256aab | 3470 | if (!service_notify_message_authorized(SERVICE(u), ucred->pid, tags, fds)) |
e3285237 LP |
3471 | return; |
3472 | ||
f1d34068 | 3473 | if (DEBUG_LOGGING) { |
9711848f LP |
3474 | _cleanup_free_ char *cc = NULL; |
3475 | ||
3476 | cc = strv_join(tags, ", "); | |
db256aab | 3477 | log_unit_debug(u, "Got notification message from PID "PID_FMT" (%s)", ucred->pid, isempty(cc) ? "n/a" : cc); |
9711848f | 3478 | } |
c952c6ec | 3479 | |
8c47c732 | 3480 | /* Interpret MAINPID= */ |
28849dba | 3481 | e = strv_find_startswith(tags, "MAINPID="); |
5e56b378 | 3482 | if (e && IN_SET(s->state, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) { |
db256aab LP |
3483 | pid_t new_main_pid; |
3484 | ||
3485 | if (parse_pid(e, &new_main_pid) < 0) | |
3486 | log_unit_warning(u, "Failed to parse MAINPID= field in notification message, ignoring: %s", e); | |
3487 | else if (!s->main_pid_known || new_main_pid != s->main_pid) { | |
3488 | ||
3489 | r = service_is_suitable_main_pid(s, new_main_pid, LOG_WARNING); | |
3490 | if (r == 0) { | |
3491 | /* The new main PID is a bit suspicous, which is OK if the sender is privileged. */ | |
3492 | ||
3493 | if (ucred->uid == 0) { | |
3494 | 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); | |
3495 | r = 1; | |
3496 | } else | |
3497 | log_unit_debug(u, "New main PID "PID_FMT" does not belong to service, refusing.", new_main_pid); | |
3498 | } | |
3499 | if (r > 0) { | |
3500 | service_set_main_pid(s, new_main_pid); | |
3501 | unit_watch_pid(UNIT(s), new_main_pid); | |
3502 | notify_dbus = true; | |
3503 | } | |
8c47c732 LP |
3504 | } |
3505 | } | |
3506 | ||
cc2b7b11 LP |
3507 | /* Interpret READY=/STOPPING=/RELOADING=. Last one wins. */ |
3508 | STRV_FOREACH_BACKWARDS(i, tags) { | |
308d72dc | 3509 | |
cc2b7b11 LP |
3510 | if (streq(*i, "READY=1")) { |
3511 | s->notify_state = NOTIFY_READY; | |
308d72dc | 3512 | |
cc2b7b11 LP |
3513 | /* Type=notify services inform us about completed |
3514 | * initialization with READY=1 */ | |
3515 | if (s->type == SERVICE_NOTIFY && s->state == SERVICE_START) | |
3516 | service_enter_start_post(s); | |
308d72dc | 3517 | |
cc2b7b11 LP |
3518 | /* Sending READY=1 while we are reloading informs us |
3519 | * that the reloading is complete */ | |
3520 | if (s->state == SERVICE_RELOAD && s->control_pid == 0) | |
3521 | service_enter_running(s, SERVICE_SUCCESS); | |
308d72dc | 3522 | |
cc2b7b11 LP |
3523 | notify_dbus = true; |
3524 | break; | |
308d72dc | 3525 | |
cc2b7b11 LP |
3526 | } else if (streq(*i, "RELOADING=1")) { |
3527 | s->notify_state = NOTIFY_RELOADING; | |
308d72dc | 3528 | |
cc2b7b11 LP |
3529 | if (s->state == SERVICE_RUNNING) |
3530 | service_enter_reload_by_notify(s); | |
308d72dc | 3531 | |
cc2b7b11 LP |
3532 | notify_dbus = true; |
3533 | break; | |
308d72dc | 3534 | |
cc2b7b11 LP |
3535 | } else if (streq(*i, "STOPPING=1")) { |
3536 | s->notify_state = NOTIFY_STOPPING; | |
308d72dc | 3537 | |
cc2b7b11 LP |
3538 | if (s->state == SERVICE_RUNNING) |
3539 | service_enter_stop_by_notify(s); | |
308d72dc | 3540 | |
cc2b7b11 LP |
3541 | notify_dbus = true; |
3542 | break; | |
3543 | } | |
8c47c732 LP |
3544 | } |
3545 | ||
3546 | /* Interpret STATUS= */ | |
28849dba | 3547 | e = strv_find_startswith(tags, "STATUS="); |
7f110ff9 | 3548 | if (e) { |
28849dba | 3549 | _cleanup_free_ char *t = NULL; |
8c47c732 | 3550 | |
28849dba LP |
3551 | if (!isempty(e)) { |
3552 | if (!utf8_is_valid(e)) | |
f2341e0a | 3553 | log_unit_warning(u, "Status message in notification message is not UTF-8 clean."); |
28849dba | 3554 | else { |
28849dba LP |
3555 | t = strdup(e); |
3556 | if (!t) | |
3557 | log_oom(); | |
3a2776bc | 3558 | } |
28849dba | 3559 | } |
8c47c732 | 3560 | |
30b5275a | 3561 | if (!streq_ptr(s->status_text, t)) { |
3b319885 | 3562 | free_and_replace(s->status_text, t); |
30b5275a | 3563 | notify_dbus = true; |
28849dba | 3564 | } |
8c47c732 | 3565 | } |
842129f5 | 3566 | |
4774e357 | 3567 | /* Interpret ERRNO= */ |
28849dba | 3568 | e = strv_find_startswith(tags, "ERRNO="); |
4774e357 MAA |
3569 | if (e) { |
3570 | int status_errno; | |
3571 | ||
2fa40742 LP |
3572 | status_errno = parse_errno(e); |
3573 | if (status_errno < 0) | |
3574 | log_unit_warning_errno(u, status_errno, | |
3575 | "Failed to parse ERRNO= field in notification message: %s", e); | |
3576 | else if (s->status_errno != status_errno) { | |
3577 | s->status_errno = status_errno; | |
3578 | notify_dbus = true; | |
4774e357 MAA |
3579 | } |
3580 | } | |
3581 | ||
a327431b DB |
3582 | /* Interpret EXTEND_TIMEOUT= */ |
3583 | e = strv_find_startswith(tags, "EXTEND_TIMEOUT_USEC="); | |
3584 | if (e) { | |
3585 | usec_t extend_timeout_usec; | |
3586 | if (safe_atou64(e, &extend_timeout_usec) < 0) | |
3587 | log_unit_warning(u, "Failed to parse EXTEND_TIMEOUT_USEC=%s", e); | |
3588 | else | |
3589 | service_extend_timeout(s, extend_timeout_usec); | |
3590 | } | |
3591 | ||
6f285378 | 3592 | /* Interpret WATCHDOG= */ |
1f6b4113 | 3593 | if (strv_find(tags, "WATCHDOG=1")) |
842129f5 | 3594 | service_reset_watchdog(s); |
c4e2ceae | 3595 | |
c45d11cb LP |
3596 | e = strv_find_startswith(tags, "WATCHDOG_USEC="); |
3597 | if (e) { | |
3598 | usec_t watchdog_override_usec; | |
3599 | if (safe_atou64(e, &watchdog_override_usec) < 0) | |
3600 | log_unit_warning(u, "Failed to parse WATCHDOG_USEC=%s", e); | |
3601 | else | |
3602 | service_reset_watchdog_timeout(s, watchdog_override_usec); | |
3603 | } | |
3604 | ||
e78ee06d LP |
3605 | /* Process FD store messages. Either FDSTOREREMOVE=1 for removal, or FDSTORE=1 for addition. In both cases, |
3606 | * process FDNAME= for picking the file descriptor name to use. Note that FDNAME= is required when removing | |
3607 | * fds, but optional when pushing in new fds, for compatibility reasons. */ | |
3608 | if (strv_find(tags, "FDSTOREREMOVE=1")) { | |
3609 | const char *name; | |
3610 | ||
3611 | name = strv_find_startswith(tags, "FDNAME="); | |
3612 | if (!name || !fdname_is_valid(name)) | |
3613 | log_unit_warning(u, "FDSTOREREMOVE=1 requested, but no valid file descriptor name passed, ignoring."); | |
3614 | else | |
3615 | service_remove_fd_store(s, name); | |
3616 | ||
3617 | } else if (strv_find(tags, "FDSTORE=1")) { | |
8dd4c05b LP |
3618 | const char *name; |
3619 | ||
3620 | name = strv_find_startswith(tags, "FDNAME="); | |
3621 | if (name && !fdname_is_valid(name)) { | |
3622 | log_unit_warning(u, "Passed FDNAME= name is invalid, ignoring."); | |
3623 | name = NULL; | |
3624 | } | |
3625 | ||
e78ee06d | 3626 | (void) service_add_fd_store_set(s, fds, name); |
8dd4c05b | 3627 | } |
a354329f | 3628 | |
c4e2ceae | 3629 | /* Notify clients about changed status or main pid */ |
30b5275a LP |
3630 | if (notify_dbus) |
3631 | unit_add_to_dbus_queue(u); | |
8c47c732 LP |
3632 | } |
3633 | ||
7a7821c8 | 3634 | static int service_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 3635 | Service *s = SERVICE(u); |
7a7821c8 | 3636 | uint64_t t; |
68db7a3b ZJS |
3637 | int r; |
3638 | ||
3639 | if (!s->timer_event_source) | |
3640 | return 0; | |
3641 | ||
7a7821c8 | 3642 | r = sd_event_source_get_time(s->timer_event_source, &t); |
68db7a3b ZJS |
3643 | if (r < 0) |
3644 | return r; | |
7a7821c8 LP |
3645 | if (t == USEC_INFINITY) |
3646 | return 0; | |
68db7a3b | 3647 | |
7a7821c8 | 3648 | *timeout = t; |
68db7a3b ZJS |
3649 | return 1; |
3650 | } | |
3651 | ||
05e343b7 LP |
3652 | static void service_bus_name_owner_change( |
3653 | Unit *u, | |
3654 | const char *name, | |
3655 | const char *old_owner, | |
3656 | const char *new_owner) { | |
3657 | ||
3658 | Service *s = SERVICE(u); | |
718db961 | 3659 | int r; |
05e343b7 LP |
3660 | |
3661 | assert(s); | |
3662 | assert(name); | |
3663 | ||
3664 | assert(streq(s->bus_name, name)); | |
3665 | assert(old_owner || new_owner); | |
3666 | ||
3667 | if (old_owner && new_owner) | |
f2341e0a | 3668 | log_unit_debug(u, "D-Bus name %s changed owner from %s to %s", name, old_owner, new_owner); |
05e343b7 | 3669 | else if (old_owner) |
f2341e0a | 3670 | log_unit_debug(u, "D-Bus name %s no longer registered by %s", name, old_owner); |
05e343b7 | 3671 | else |
f2341e0a | 3672 | log_unit_debug(u, "D-Bus name %s now registered by %s", name, new_owner); |
05e343b7 LP |
3673 | |
3674 | s->bus_name_good = !!new_owner; | |
3675 | ||
d8ccf5fd DM |
3676 | /* Track the current owner, so we can reconstruct changes after a daemon reload */ |
3677 | r = free_and_strdup(&s->bus_name_owner, new_owner); | |
3678 | if (r < 0) { | |
3679 | log_unit_error_errno(u, r, "Unable to set new bus name owner %s: %m", new_owner); | |
3680 | return; | |
3681 | } | |
3682 | ||
05e343b7 LP |
3683 | if (s->type == SERVICE_DBUS) { |
3684 | ||
3685 | /* service_enter_running() will figure out what to | |
3686 | * do */ | |
3687 | if (s->state == SERVICE_RUNNING) | |
f42806df | 3688 | service_enter_running(s, SERVICE_SUCCESS); |
05e343b7 LP |
3689 | else if (s->state == SERVICE_START && new_owner) |
3690 | service_enter_start_post(s); | |
3691 | ||
3692 | } else if (new_owner && | |
3693 | s->main_pid <= 0 && | |
a6951a50 LP |
3694 | IN_SET(s->state, |
3695 | SERVICE_START, | |
3696 | SERVICE_START_POST, | |
3697 | SERVICE_RUNNING, | |
3698 | SERVICE_RELOAD)) { | |
05e343b7 | 3699 | |
4afd3348 | 3700 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; |
718db961 | 3701 | pid_t pid; |
05e343b7 | 3702 | |
718db961 | 3703 | /* Try to acquire PID from bus service */ |
05e343b7 | 3704 | |
056f95d0 | 3705 | r = sd_bus_get_name_creds(u->manager->api_bus, name, SD_BUS_CREDS_PID, &creds); |
5b12334d LP |
3706 | if (r >= 0) |
3707 | r = sd_bus_creds_get_pid(creds, &pid); | |
718db961 | 3708 | if (r >= 0) { |
7c102d60 | 3709 | log_unit_debug(u, "D-Bus name %s is now owned by process " PID_FMT, name, pid); |
05e343b7 | 3710 | |
718db961 LP |
3711 | service_set_main_pid(s, pid); |
3712 | unit_watch_pid(UNIT(s), pid); | |
3713 | } | |
7400b9d2 | 3714 | } |
05e343b7 LP |
3715 | } |
3716 | ||
16115b0a | 3717 | int service_set_socket_fd(Service *s, int fd, Socket *sock, bool selinux_context_net) { |
79a98c60 LP |
3718 | _cleanup_free_ char *peer = NULL; |
3719 | int r; | |
57020a3a | 3720 | |
4f2d528d LP |
3721 | assert(s); |
3722 | assert(fd >= 0); | |
3723 | ||
7f2fbbff LP |
3724 | /* This is called by the socket code when instantiating a new service for a stream socket and the socket needs |
3725 | * to be configured. We take ownership of the passed fd on success. */ | |
4f2d528d | 3726 | |
1124fe6f | 3727 | if (UNIT(s)->load_state != UNIT_LOADED) |
4f2d528d LP |
3728 | return -EINVAL; |
3729 | ||
3730 | if (s->socket_fd >= 0) | |
3731 | return -EBUSY; | |
3732 | ||
3733 | if (s->state != SERVICE_DEAD) | |
3734 | return -EAGAIN; | |
3735 | ||
366b7db4 | 3736 | if (getpeername_pretty(fd, true, &peer) >= 0) { |
79a98c60 LP |
3737 | |
3738 | if (UNIT(s)->description) { | |
3739 | _cleanup_free_ char *a; | |
3740 | ||
605405c6 | 3741 | a = strjoin(UNIT(s)->description, " (", peer, ")"); |
79a98c60 LP |
3742 | if (!a) |
3743 | return -ENOMEM; | |
3744 | ||
3745 | r = unit_set_description(UNIT(s), a); | |
3746 | } else | |
3747 | r = unit_set_description(UNIT(s), peer); | |
3748 | ||
3749 | if (r < 0) | |
3750 | return r; | |
3751 | } | |
3752 | ||
eef85c4a | 3753 | r = unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false, UNIT_DEPENDENCY_IMPLICIT); |
7f2fbbff LP |
3754 | if (r < 0) |
3755 | return r; | |
3756 | ||
4f2d528d | 3757 | s->socket_fd = fd; |
16115b0a | 3758 | s->socket_fd_selinux_context_net = selinux_context_net; |
6cf6bbc2 | 3759 | |
7f7d01ed | 3760 | unit_ref_set(&s->accept_socket, UNIT(s), UNIT(sock)); |
7f2fbbff | 3761 | return 0; |
4f2d528d LP |
3762 | } |
3763 | ||
fdf20a31 | 3764 | static void service_reset_failed(Unit *u) { |
5632e374 LP |
3765 | Service *s = SERVICE(u); |
3766 | ||
3767 | assert(s); | |
3768 | ||
fdf20a31 | 3769 | if (s->state == SERVICE_FAILED) |
5632e374 LP |
3770 | service_set_state(s, SERVICE_DEAD); |
3771 | ||
f42806df LP |
3772 | s->result = SERVICE_SUCCESS; |
3773 | s->reload_result = SERVICE_SUCCESS; | |
7a0019d3 LP |
3774 | s->n_restarts = 0; |
3775 | s->flush_n_restarts = false; | |
5632e374 LP |
3776 | } |
3777 | ||
718db961 | 3778 | static int service_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
8a0867d6 | 3779 | Service *s = SERVICE(u); |
41efeaec | 3780 | |
a6951a50 LP |
3781 | assert(s); |
3782 | ||
814cc562 | 3783 | return unit_kill_common(u, who, signo, s->main_pid, s->control_pid, error); |
8a0867d6 LP |
3784 | } |
3785 | ||
291d565a LP |
3786 | static int service_main_pid(Unit *u) { |
3787 | Service *s = SERVICE(u); | |
3788 | ||
3789 | assert(s); | |
3790 | ||
3791 | return s->main_pid; | |
3792 | } | |
3793 | ||
3794 | static int service_control_pid(Unit *u) { | |
3795 | Service *s = SERVICE(u); | |
3796 | ||
3797 | assert(s); | |
3798 | ||
3799 | return s->control_pid; | |
3800 | } | |
3801 | ||
bb2c7685 LP |
3802 | static bool service_needs_console(Unit *u) { |
3803 | Service *s = SERVICE(u); | |
3804 | ||
3805 | assert(s); | |
3806 | ||
3807 | /* We provide our own implementation of this here, instead of relying of the generic implementation | |
3808 | * unit_needs_console() provides, since we want to return false if we are in SERVICE_EXITED state. */ | |
3809 | ||
3810 | if (!exec_context_may_touch_console(&s->exec_context)) | |
3811 | return false; | |
3812 | ||
3813 | return IN_SET(s->state, | |
3814 | SERVICE_START_PRE, | |
3815 | SERVICE_START, | |
3816 | SERVICE_START_POST, | |
3817 | SERVICE_RUNNING, | |
3818 | SERVICE_RELOAD, | |
3819 | SERVICE_STOP, | |
3820 | SERVICE_STOP_SIGABRT, | |
3821 | SERVICE_STOP_SIGTERM, | |
3822 | SERVICE_STOP_SIGKILL, | |
3823 | SERVICE_STOP_POST, | |
3824 | SERVICE_FINAL_SIGTERM, | |
3825 | SERVICE_FINAL_SIGKILL); | |
3826 | } | |
3827 | ||
94f04347 | 3828 | static const char* const service_restart_table[_SERVICE_RESTART_MAX] = { |
525ee6f4 LP |
3829 | [SERVICE_RESTART_NO] = "no", |
3830 | [SERVICE_RESTART_ON_SUCCESS] = "on-success", | |
50caaedb | 3831 | [SERVICE_RESTART_ON_FAILURE] = "on-failure", |
6cfe2fde | 3832 | [SERVICE_RESTART_ON_ABNORMAL] = "on-abnormal", |
dc99a976 | 3833 | [SERVICE_RESTART_ON_WATCHDOG] = "on-watchdog", |
50caaedb | 3834 | [SERVICE_RESTART_ON_ABORT] = "on-abort", |
6cfe2fde | 3835 | [SERVICE_RESTART_ALWAYS] = "always", |
94f04347 LP |
3836 | }; |
3837 | ||
3838 | DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart); | |
3839 | ||
3840 | static const char* const service_type_table[_SERVICE_TYPE_MAX] = { | |
94f04347 | 3841 | [SERVICE_SIMPLE] = "simple", |
0d624a78 | 3842 | [SERVICE_FORKING] = "forking", |
34e9ba66 | 3843 | [SERVICE_ONESHOT] = "oneshot", |
8c47c732 | 3844 | [SERVICE_DBUS] = "dbus", |
f2b68789 LP |
3845 | [SERVICE_NOTIFY] = "notify", |
3846 | [SERVICE_IDLE] = "idle" | |
94f04347 LP |
3847 | }; |
3848 | ||
3849 | DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType); | |
3850 | ||
e537352b | 3851 | static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = { |
94f04347 LP |
3852 | [SERVICE_EXEC_START_PRE] = "ExecStartPre", |
3853 | [SERVICE_EXEC_START] = "ExecStart", | |
3854 | [SERVICE_EXEC_START_POST] = "ExecStartPost", | |
3855 | [SERVICE_EXEC_RELOAD] = "ExecReload", | |
3856 | [SERVICE_EXEC_STOP] = "ExecStop", | |
3857 | [SERVICE_EXEC_STOP_POST] = "ExecStopPost", | |
3858 | }; | |
3859 | ||
3860 | DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand); | |
3861 | ||
308d72dc LP |
3862 | static const char* const notify_state_table[_NOTIFY_STATE_MAX] = { |
3863 | [NOTIFY_UNKNOWN] = "unknown", | |
3864 | [NOTIFY_READY] = "ready", | |
3865 | [NOTIFY_RELOADING] = "reloading", | |
3866 | [NOTIFY_STOPPING] = "stopping", | |
3867 | }; | |
3868 | ||
3869 | DEFINE_STRING_TABLE_LOOKUP(notify_state, NotifyState); | |
3870 | ||
f42806df LP |
3871 | static const char* const service_result_table[_SERVICE_RESULT_MAX] = { |
3872 | [SERVICE_SUCCESS] = "success", | |
3873 | [SERVICE_FAILURE_RESOURCES] = "resources", | |
c35755fb | 3874 | [SERVICE_FAILURE_PROTOCOL] = "protocol", |
f42806df LP |
3875 | [SERVICE_FAILURE_TIMEOUT] = "timeout", |
3876 | [SERVICE_FAILURE_EXIT_CODE] = "exit-code", | |
3877 | [SERVICE_FAILURE_SIGNAL] = "signal", | |
bb242b7b | 3878 | [SERVICE_FAILURE_CORE_DUMP] = "core-dump", |
8d1b002a | 3879 | [SERVICE_FAILURE_WATCHDOG] = "watchdog", |
07299350 | 3880 | [SERVICE_FAILURE_START_LIMIT_HIT] = "start-limit-hit", |
f42806df LP |
3881 | }; |
3882 | ||
3883 | DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult); | |
3884 | ||
87f0e418 | 3885 | const UnitVTable service_vtable = { |
7d17cfbc | 3886 | .object_size = sizeof(Service), |
718db961 LP |
3887 | .exec_context_offset = offsetof(Service, exec_context), |
3888 | .cgroup_context_offset = offsetof(Service, cgroup_context), | |
3889 | .kill_context_offset = offsetof(Service, kill_context), | |
613b411c | 3890 | .exec_runtime_offset = offsetof(Service, exec_runtime), |
29206d46 | 3891 | .dynamic_creds_offset = offsetof(Service, dynamic_creds), |
3ef63c31 | 3892 | |
f975e971 LP |
3893 | .sections = |
3894 | "Unit\0" | |
3895 | "Service\0" | |
3896 | "Install\0", | |
4ad49000 | 3897 | .private_section = "Service", |
71645aca | 3898 | |
1d9cc876 LP |
3899 | .can_transient = true, |
3900 | .can_delegate = true, | |
3901 | ||
034c6ed7 LP |
3902 | .init = service_init, |
3903 | .done = service_done, | |
a16e1123 | 3904 | .load = service_load, |
a354329f | 3905 | .release_resources = service_release_resources, |
a16e1123 LP |
3906 | |
3907 | .coldplug = service_coldplug, | |
034c6ed7 | 3908 | |
5cb5a6ff LP |
3909 | .dump = service_dump, |
3910 | ||
3911 | .start = service_start, | |
3912 | .stop = service_stop, | |
3913 | .reload = service_reload, | |
3914 | ||
034c6ed7 LP |
3915 | .can_reload = service_can_reload, |
3916 | ||
8a0867d6 LP |
3917 | .kill = service_kill, |
3918 | ||
a16e1123 LP |
3919 | .serialize = service_serialize, |
3920 | .deserialize_item = service_deserialize_item, | |
3921 | ||
5cb5a6ff | 3922 | .active_state = service_active_state, |
10a94420 | 3923 | .sub_state_to_string = service_sub_state_to_string, |
5cb5a6ff | 3924 | |
deb4e708 MK |
3925 | .will_restart = service_will_restart, |
3926 | ||
f2f725e5 | 3927 | .may_gc = service_may_gc, |
701cc384 | 3928 | |
034c6ed7 | 3929 | .sigchld_event = service_sigchld_event, |
2c4104f0 | 3930 | |
fdf20a31 | 3931 | .reset_failed = service_reset_failed, |
5632e374 | 3932 | |
4ad49000 | 3933 | .notify_cgroup_empty = service_notify_cgroup_empty_event, |
8c47c732 | 3934 | .notify_message = service_notify_message, |
8e274523 | 3935 | |
291d565a LP |
3936 | .main_pid = service_main_pid, |
3937 | .control_pid = service_control_pid, | |
3938 | ||
05e343b7 | 3939 | .bus_name_owner_change = service_bus_name_owner_change, |
05e343b7 | 3940 | |
718db961 | 3941 | .bus_vtable = bus_service_vtable, |
74c964d3 LP |
3942 | .bus_set_property = bus_service_set_property, |
3943 | .bus_commit_properties = bus_service_commit_properties, | |
4139c1b2 | 3944 | |
68db7a3b | 3945 | .get_timeout = service_get_timeout, |
bb2c7685 | 3946 | .needs_console = service_needs_console, |
718db961 | 3947 | |
c6918296 MS |
3948 | .status_message_formats = { |
3949 | .starting_stopping = { | |
3950 | [0] = "Starting %s...", | |
3951 | [1] = "Stopping %s...", | |
3952 | }, | |
3953 | .finished_start_job = { | |
3954 | [JOB_DONE] = "Started %s.", | |
3955 | [JOB_FAILED] = "Failed to start %s.", | |
c6918296 MS |
3956 | }, |
3957 | .finished_stop_job = { | |
3958 | [JOB_DONE] = "Stopped %s.", | |
3959 | [JOB_FAILED] = "Stopped (with error) %s.", | |
c6918296 MS |
3960 | }, |
3961 | }, | |
5cb5a6ff | 3962 | }; |