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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" |
6fcbec6f | 15 | #include "dbus-unit.h" |
f6a6225e | 16 | #include "def.h" |
4d1a6904 | 17 | #include "env-util.h" |
4f5dd394 LP |
18 | #include "escape.h" |
19 | #include "exit-status.h" | |
3ffd4af2 | 20 | #include "fd-util.h" |
a5c32cff | 21 | #include "fileio.h" |
f97b34a6 | 22 | #include "format-util.h" |
f4f15635 | 23 | #include "fs-util.h" |
4f5dd394 LP |
24 | #include "load-dropin.h" |
25 | #include "load-fragment.h" | |
26 | #include "log.h" | |
27 | #include "manager.h" | |
6bedfcbb | 28 | #include "parse-util.h" |
4f5dd394 | 29 | #include "path-util.h" |
0b452006 | 30 | #include "process-util.h" |
d68c645b | 31 | #include "serialize.h" |
3ffd4af2 | 32 | #include "service.h" |
24882e06 | 33 | #include "signal-util.h" |
4f5dd394 | 34 | #include "special.h" |
e266c068 | 35 | #include "stdio-util.h" |
8b43440b | 36 | #include "string-table.h" |
07630cea | 37 | #include "string-util.h" |
4f5dd394 LP |
38 | #include "strv.h" |
39 | #include "unit-name.h" | |
4f5dd394 LP |
40 | #include "unit.h" |
41 | #include "utf8.h" | |
42 | #include "util.h" | |
034c6ed7 | 43 | |
acbb0225 | 44 | static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = { |
87f0e418 LP |
45 | [SERVICE_DEAD] = UNIT_INACTIVE, |
46 | [SERVICE_START_PRE] = UNIT_ACTIVATING, | |
47 | [SERVICE_START] = UNIT_ACTIVATING, | |
48 | [SERVICE_START_POST] = UNIT_ACTIVATING, | |
49 | [SERVICE_RUNNING] = UNIT_ACTIVE, | |
80876c20 | 50 | [SERVICE_EXITED] = UNIT_ACTIVE, |
032ff4af | 51 | [SERVICE_RELOAD] = UNIT_RELOADING, |
87f0e418 | 52 | [SERVICE_STOP] = UNIT_DEACTIVATING, |
c87700a1 | 53 | [SERVICE_STOP_WATCHDOG] = UNIT_DEACTIVATING, |
87f0e418 LP |
54 | [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, |
55 | [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
56 | [SERVICE_STOP_POST] = UNIT_DEACTIVATING, | |
57 | [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, | |
58 | [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
fdf20a31 | 59 | [SERVICE_FAILED] = UNIT_FAILED, |
6124958c | 60 | [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING |
034c6ed7 | 61 | }; |
5cb5a6ff | 62 | |
e056b01d LP |
63 | /* For Type=idle we never want to delay any other jobs, hence we |
64 | * consider idle jobs active as soon as we start working on them */ | |
65 | static const UnitActiveState state_translation_table_idle[_SERVICE_STATE_MAX] = { | |
66 | [SERVICE_DEAD] = UNIT_INACTIVE, | |
67 | [SERVICE_START_PRE] = UNIT_ACTIVE, | |
68 | [SERVICE_START] = UNIT_ACTIVE, | |
69 | [SERVICE_START_POST] = UNIT_ACTIVE, | |
70 | [SERVICE_RUNNING] = UNIT_ACTIVE, | |
71 | [SERVICE_EXITED] = UNIT_ACTIVE, | |
72 | [SERVICE_RELOAD] = UNIT_RELOADING, | |
73 | [SERVICE_STOP] = UNIT_DEACTIVATING, | |
c87700a1 | 74 | [SERVICE_STOP_WATCHDOG] = UNIT_DEACTIVATING, |
e056b01d LP |
75 | [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, |
76 | [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
77 | [SERVICE_STOP_POST] = UNIT_DEACTIVATING, | |
78 | [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, | |
79 | [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
80 | [SERVICE_FAILED] = UNIT_FAILED, | |
81 | [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING | |
82 | }; | |
83 | ||
5686391b | 84 | static int service_dispatch_inotify_io(sd_event_source *source, int fd, uint32_t events, void *userdata); |
718db961 LP |
85 | static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); |
86 | static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata); | |
5686391b | 87 | static int service_dispatch_exec_io(sd_event_source *source, int fd, uint32_t events, void *userdata); |
718db961 | 88 | |
842129f5 | 89 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f); |
308d72dc | 90 | static void service_enter_reload_by_notify(Service *s); |
842129f5 | 91 | |
a16e1123 LP |
92 | static void service_init(Unit *u) { |
93 | Service *s = SERVICE(u); | |
94 | ||
95 | assert(u); | |
ac155bb8 | 96 | assert(u->load_state == UNIT_STUB); |
a16e1123 | 97 | |
1f19a534 OS |
98 | s->timeout_start_usec = u->manager->default_timeout_start_usec; |
99 | s->timeout_stop_usec = u->manager->default_timeout_stop_usec; | |
100 | s->restart_usec = u->manager->default_restart_usec; | |
36c16a7c | 101 | s->runtime_max_usec = USEC_INFINITY; |
0b86feac | 102 | s->type = _SERVICE_TYPE_INVALID; |
a16e1123 | 103 | s->socket_fd = -1; |
a34ceba6 | 104 | s->stdin_fd = s->stdout_fd = s->stderr_fd = -1; |
3185a36b | 105 | s->guess_main_pid = true; |
a16e1123 | 106 | |
a16e1123 | 107 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; |
00f5ad93 LP |
108 | |
109 | s->exec_context.keyring_mode = MANAGER_IS_SYSTEM(u->manager) ? | |
110 | EXEC_KEYRING_PRIVATE : EXEC_KEYRING_INHERIT; | |
aa8c4bbf LP |
111 | |
112 | s->watchdog_original_usec = USEC_INFINITY; | |
a16e1123 LP |
113 | } |
114 | ||
5e94833f LP |
115 | static void service_unwatch_control_pid(Service *s) { |
116 | assert(s); | |
117 | ||
118 | if (s->control_pid <= 0) | |
119 | return; | |
120 | ||
121 | unit_unwatch_pid(UNIT(s), s->control_pid); | |
122 | s->control_pid = 0; | |
123 | } | |
124 | ||
125 | static void service_unwatch_main_pid(Service *s) { | |
126 | assert(s); | |
127 | ||
128 | if (s->main_pid <= 0) | |
129 | return; | |
130 | ||
131 | unit_unwatch_pid(UNIT(s), s->main_pid); | |
132 | s->main_pid = 0; | |
133 | } | |
134 | ||
3e52541e MS |
135 | static void service_unwatch_pid_file(Service *s) { |
136 | if (!s->pid_file_pathspec) | |
137 | return; | |
138 | ||
f2341e0a | 139 | log_unit_debug(UNIT(s), "Stopping watch for PID file %s", s->pid_file_pathspec->path); |
718db961 | 140 | path_spec_unwatch(s->pid_file_pathspec); |
3e52541e | 141 | path_spec_done(s->pid_file_pathspec); |
a1e58e8e | 142 | s->pid_file_pathspec = mfree(s->pid_file_pathspec); |
3e52541e MS |
143 | } |
144 | ||
5925dd3c | 145 | static int service_set_main_pid(Service *s, pid_t pid) { |
e55224ca LP |
146 | pid_t ppid; |
147 | ||
5925dd3c LP |
148 | assert(s); |
149 | ||
150 | if (pid <= 1) | |
151 | return -EINVAL; | |
152 | ||
df0ff127 | 153 | if (pid == getpid_cached()) |
5925dd3c LP |
154 | return -EINVAL; |
155 | ||
7400b9d2 LP |
156 | if (s->main_pid == pid && s->main_pid_known) |
157 | return 0; | |
158 | ||
159 | if (s->main_pid != pid) { | |
160 | service_unwatch_main_pid(s); | |
161 | exec_status_start(&s->main_exec_status, pid); | |
162 | } | |
41efeaec | 163 | |
6dfa5494 LP |
164 | s->main_pid = pid; |
165 | s->main_pid_known = true; | |
166 | ||
df0ff127 | 167 | if (get_process_ppid(pid, &ppid) >= 0 && ppid != getpid_cached()) { |
f2341e0a | 168 | 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 |
169 | s->main_pid_alien = true; |
170 | } else | |
171 | s->main_pid_alien = false; | |
5925dd3c LP |
172 | |
173 | return 0; | |
174 | } | |
175 | ||
3e7a1f50 | 176 | void service_close_socket_fd(Service *s) { |
4f2d528d LP |
177 | assert(s); |
178 | ||
5cc3985e | 179 | /* Undo the effect of service_set_socket_fd(). */ |
4f2d528d | 180 | |
5cc3985e | 181 | s->socket_fd = asynchronous_close(s->socket_fd); |
6cf6bbc2 | 182 | |
5cc3985e LP |
183 | if (UNIT_ISSET(s->accept_socket)) { |
184 | socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket))); | |
185 | unit_ref_unset(&s->accept_socket); | |
186 | } | |
6cf6bbc2 LP |
187 | } |
188 | ||
a6927d7f MO |
189 | static void service_stop_watchdog(Service *s) { |
190 | assert(s); | |
191 | ||
718db961 | 192 | s->watchdog_event_source = sd_event_source_unref(s->watchdog_event_source); |
842129f5 | 193 | s->watchdog_timestamp = DUAL_TIMESTAMP_NULL; |
a6927d7f MO |
194 | } |
195 | ||
2787d83c M |
196 | static usec_t service_get_watchdog_usec(Service *s) { |
197 | assert(s); | |
198 | ||
199 | if (s->watchdog_override_enable) | |
200 | return s->watchdog_override_usec; | |
9fb1cdb4 LP |
201 | |
202 | return s->watchdog_original_usec; | |
2787d83c M |
203 | } |
204 | ||
842129f5 | 205 | static void service_start_watchdog(Service *s) { |
2787d83c | 206 | usec_t watchdog_usec; |
9fb1cdb4 | 207 | int r; |
bb242b7b MO |
208 | |
209 | assert(s); | |
210 | ||
2787d83c | 211 | watchdog_usec = service_get_watchdog_usec(s); |
9fb1cdb4 LP |
212 | if (IN_SET(watchdog_usec, 0, USEC_INFINITY)) { |
213 | service_stop_watchdog(s); | |
bb242b7b | 214 | return; |
9fb1cdb4 | 215 | } |
bb242b7b | 216 | |
718db961 | 217 | if (s->watchdog_event_source) { |
2787d83c | 218 | r = sd_event_source_set_time(s->watchdog_event_source, usec_add(s->watchdog_timestamp.monotonic, watchdog_usec)); |
718db961 | 219 | if (r < 0) { |
f2341e0a | 220 | log_unit_warning_errno(UNIT(s), r, "Failed to reset watchdog timer: %m"); |
718db961 LP |
221 | return; |
222 | } | |
223 | ||
842129f5 | 224 | r = sd_event_source_set_enabled(s->watchdog_event_source, SD_EVENT_ONESHOT); |
c4ef3317 | 225 | } else { |
6a0f1f6d LP |
226 | r = sd_event_add_time( |
227 | UNIT(s)->manager->event, | |
228 | &s->watchdog_event_source, | |
229 | CLOCK_MONOTONIC, | |
2787d83c | 230 | usec_add(s->watchdog_timestamp.monotonic, watchdog_usec), 0, |
6a0f1f6d | 231 | service_dispatch_watchdog, s); |
c4ef3317 | 232 | if (r < 0) { |
f2341e0a | 233 | log_unit_warning_errno(UNIT(s), r, "Failed to add watchdog timer: %m"); |
c4ef3317 LP |
234 | return; |
235 | } | |
236 | ||
7dfbe2e3 TG |
237 | (void) sd_event_source_set_description(s->watchdog_event_source, "service-watchdog"); |
238 | ||
c4ef3317 LP |
239 | /* Let's process everything else which might be a sign |
240 | * of living before we consider a service died. */ | |
241 | r = sd_event_source_set_priority(s->watchdog_event_source, SD_EVENT_PRIORITY_IDLE); | |
242 | } | |
bb242b7b | 243 | if (r < 0) |
f2341e0a | 244 | log_unit_warning_errno(UNIT(s), r, "Failed to install watchdog timer: %m"); |
bb242b7b MO |
245 | } |
246 | ||
ec35a7f6 LP |
247 | static void service_extend_event_source_timeout(Service *s, sd_event_source *source, usec_t extended) { |
248 | usec_t current; | |
249 | int r; | |
250 | ||
a327431b DB |
251 | assert(s); |
252 | ||
ec35a7f6 LP |
253 | /* Extends the specified event source timer to at least the specified time, unless it is already later |
254 | * anyway. */ | |
a327431b | 255 | |
ec35a7f6 LP |
256 | if (!source) |
257 | return; | |
a327431b | 258 | |
ec35a7f6 LP |
259 | r = sd_event_source_get_time(source, ¤t); |
260 | if (r < 0) { | |
261 | const char *desc; | |
262 | (void) sd_event_source_get_description(s->timer_event_source, &desc); | |
263 | log_unit_warning_errno(UNIT(s), r, "Failed to retrieve timeout time for event source '%s', ignoring: %m", strna(desc)); | |
264 | return; | |
265 | } | |
a327431b | 266 | |
ec35a7f6 LP |
267 | if (current >= extended) /* Current timeout is already longer, ignore this. */ |
268 | return; | |
a327431b | 269 | |
ec35a7f6 LP |
270 | r = sd_event_source_set_time(source, extended); |
271 | if (r < 0) { | |
272 | const char *desc; | |
273 | (void) sd_event_source_get_description(s->timer_event_source, &desc); | |
274 | log_unit_warning_errno(UNIT(s), r, "Failed to set timeout time for even source '%s', ignoring %m", strna(desc)); | |
a327431b DB |
275 | } |
276 | } | |
277 | ||
ec35a7f6 LP |
278 | static void service_extend_timeout(Service *s, usec_t extend_timeout_usec) { |
279 | usec_t extended; | |
280 | ||
281 | assert(s); | |
282 | ||
283 | if (IN_SET(extend_timeout_usec, 0, USEC_INFINITY)) | |
284 | return; | |
285 | ||
286 | extended = usec_add(now(CLOCK_MONOTONIC), extend_timeout_usec); | |
287 | ||
288 | service_extend_event_source_timeout(s, s->timer_event_source, extended); | |
289 | service_extend_event_source_timeout(s, s->watchdog_event_source, extended); | |
290 | } | |
291 | ||
a6927d7f MO |
292 | static void service_reset_watchdog(Service *s) { |
293 | assert(s); | |
294 | ||
295 | dual_timestamp_get(&s->watchdog_timestamp); | |
842129f5 | 296 | service_start_watchdog(s); |
a6927d7f MO |
297 | } |
298 | ||
95d0d8ed | 299 | static void service_override_watchdog_timeout(Service *s, usec_t watchdog_override_usec) { |
2787d83c M |
300 | assert(s); |
301 | ||
302 | s->watchdog_override_enable = true; | |
303 | s->watchdog_override_usec = watchdog_override_usec; | |
304 | service_reset_watchdog(s); | |
305 | ||
306 | log_unit_debug(UNIT(s), "watchdog_usec="USEC_FMT, s->watchdog_usec); | |
307 | log_unit_debug(UNIT(s), "watchdog_override_usec="USEC_FMT, s->watchdog_override_usec); | |
308 | } | |
309 | ||
a354329f LP |
310 | static void service_fd_store_unlink(ServiceFDStore *fs) { |
311 | ||
312 | if (!fs) | |
313 | return; | |
314 | ||
315 | if (fs->service) { | |
316 | assert(fs->service->n_fd_store > 0); | |
317 | LIST_REMOVE(fd_store, fs->service->fd_store, fs); | |
318 | fs->service->n_fd_store--; | |
319 | } | |
320 | ||
321 | if (fs->event_source) { | |
322 | sd_event_source_set_enabled(fs->event_source, SD_EVENT_OFF); | |
323 | sd_event_source_unref(fs->event_source); | |
324 | } | |
325 | ||
8dd4c05b | 326 | free(fs->fdname); |
a354329f LP |
327 | safe_close(fs->fd); |
328 | free(fs); | |
329 | } | |
330 | ||
f0bfbfac ZJS |
331 | static void service_release_fd_store(Service *s) { |
332 | assert(s); | |
333 | ||
7eb2a8a1 LP |
334 | if (s->n_keep_fd_store > 0) |
335 | return; | |
336 | ||
f0bfbfac ZJS |
337 | log_unit_debug(UNIT(s), "Releasing all stored fds"); |
338 | while (s->fd_store) | |
339 | service_fd_store_unlink(s->fd_store); | |
340 | ||
341 | assert(s->n_fd_store == 0); | |
342 | } | |
343 | ||
7eb2a8a1 | 344 | static void service_release_resources(Unit *u) { |
a354329f LP |
345 | Service *s = SERVICE(u); |
346 | ||
347 | assert(s); | |
348 | ||
a34ceba6 | 349 | if (!s->fd_store && s->stdin_fd < 0 && s->stdout_fd < 0 && s->stderr_fd < 0) |
a354329f LP |
350 | return; |
351 | ||
f0bfbfac | 352 | log_unit_debug(u, "Releasing resources."); |
a354329f | 353 | |
a34ceba6 LP |
354 | s->stdin_fd = safe_close(s->stdin_fd); |
355 | s->stdout_fd = safe_close(s->stdout_fd); | |
356 | s->stderr_fd = safe_close(s->stderr_fd); | |
357 | ||
7eb2a8a1 | 358 | service_release_fd_store(s); |
a354329f LP |
359 | } |
360 | ||
87f0e418 LP |
361 | static void service_done(Unit *u) { |
362 | Service *s = SERVICE(u); | |
44d8db9e LP |
363 | |
364 | assert(s); | |
365 | ||
a1e58e8e LP |
366 | s->pid_file = mfree(s->pid_file); |
367 | s->status_text = mfree(s->status_text); | |
efe6e7d3 | 368 | |
e8a565cb | 369 | s->exec_runtime = exec_runtime_unref(s->exec_runtime, false); |
e537352b | 370 | exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); |
44d8db9e | 371 | s->control_command = NULL; |
867b3b7d | 372 | s->main_command = NULL; |
44d8db9e | 373 | |
29206d46 LP |
374 | dynamic_creds_unref(&s->dynamic_creds); |
375 | ||
37520c1b LP |
376 | exit_status_set_free(&s->restart_prevent_status); |
377 | exit_status_set_free(&s->restart_force_status); | |
378 | exit_status_set_free(&s->success_status); | |
96342de6 | 379 | |
44d8db9e LP |
380 | /* This will leak a process, but at least no memory or any of |
381 | * our resources */ | |
5e94833f LP |
382 | service_unwatch_main_pid(s); |
383 | service_unwatch_control_pid(s); | |
3e52541e | 384 | service_unwatch_pid_file(s); |
44d8db9e | 385 | |
05e343b7 | 386 | if (s->bus_name) { |
ac155bb8 | 387 | unit_unwatch_bus_name(u, s->bus_name); |
a1e58e8e | 388 | s->bus_name = mfree(s->bus_name); |
05e343b7 LP |
389 | } |
390 | ||
d8ccf5fd DM |
391 | s->bus_name_owner = mfree(s->bus_name_owner); |
392 | ||
064c5938 ZJS |
393 | s->usb_function_descriptors = mfree(s->usb_function_descriptors); |
394 | s->usb_function_strings = mfree(s->usb_function_strings); | |
395 | ||
4f2d528d | 396 | service_close_socket_fd(s); |
9d565427 | 397 | s->peer = socket_peer_unref(s->peer); |
4f2d528d | 398 | |
57020a3a | 399 | unit_ref_unset(&s->accept_socket); |
f976f3f6 | 400 | |
bb242b7b MO |
401 | service_stop_watchdog(s); |
402 | ||
718db961 | 403 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
5686391b | 404 | s->exec_fd_event_source = sd_event_source_unref(s->exec_fd_event_source); |
a354329f | 405 | |
7eb2a8a1 | 406 | service_release_resources(u); |
718db961 LP |
407 | } |
408 | ||
2339fc93 LP |
409 | static int on_fd_store_io(sd_event_source *e, int fd, uint32_t revents, void *userdata) { |
410 | ServiceFDStore *fs = userdata; | |
411 | ||
412 | assert(e); | |
413 | assert(fs); | |
414 | ||
415 | /* If we get either EPOLLHUP or EPOLLERR, it's time to remove this entry from the fd store */ | |
16f70d63 ZJS |
416 | log_unit_debug(UNIT(fs->service), |
417 | "Received %s on stored fd %d (%s), closing.", | |
418 | revents & EPOLLERR ? "EPOLLERR" : "EPOLLHUP", | |
419 | fs->fd, strna(fs->fdname)); | |
2339fc93 LP |
420 | service_fd_store_unlink(fs); |
421 | return 0; | |
422 | } | |
423 | ||
8dd4c05b | 424 | static int service_add_fd_store(Service *s, int fd, const char *name) { |
2339fc93 LP |
425 | ServiceFDStore *fs; |
426 | int r; | |
427 | ||
9021ff17 ZJS |
428 | /* fd is always consumed if we return >= 0 */ |
429 | ||
2339fc93 LP |
430 | assert(s); |
431 | assert(fd >= 0); | |
432 | ||
433 | if (s->n_fd_store >= s->n_fd_store_max) | |
b0924635 ZJS |
434 | return -EXFULL; /* Our store is full. |
435 | * Use this errno rather than E[NM]FILE to distinguish from | |
436 | * the case where systemd itself hits the file limit. */ | |
2339fc93 LP |
437 | |
438 | LIST_FOREACH(fd_store, fs, s->fd_store) { | |
439 | r = same_fd(fs->fd, fd); | |
440 | if (r < 0) | |
441 | return r; | |
442 | if (r > 0) { | |
2339fc93 | 443 | safe_close(fd); |
9021ff17 | 444 | return 0; /* fd already included */ |
2339fc93 LP |
445 | } |
446 | } | |
447 | ||
448 | fs = new0(ServiceFDStore, 1); | |
449 | if (!fs) | |
450 | return -ENOMEM; | |
451 | ||
452 | fs->fd = fd; | |
453 | fs->service = s; | |
8dd4c05b | 454 | fs->fdname = strdup(name ?: "stored"); |
17dec0f7 | 455 | if (!fs->fdname) { |
456 | free(fs); | |
8dd4c05b | 457 | return -ENOMEM; |
17dec0f7 | 458 | } |
2339fc93 LP |
459 | |
460 | r = sd_event_add_io(UNIT(s)->manager->event, &fs->event_source, fd, 0, on_fd_store_io, fs); | |
3ceb72e5 | 461 | if (r < 0 && r != -EPERM) { /* EPERM indicates fds that aren't pollable, which is OK */ |
8dd4c05b | 462 | free(fs->fdname); |
2339fc93 LP |
463 | free(fs); |
464 | return r; | |
3ceb72e5 LP |
465 | } else if (r >= 0) |
466 | (void) sd_event_source_set_description(fs->event_source, "service-fd-store"); | |
7dfbe2e3 | 467 | |
2339fc93 LP |
468 | LIST_PREPEND(fd_store, s->fd_store, fs); |
469 | s->n_fd_store++; | |
470 | ||
9021ff17 | 471 | return 1; /* fd newly stored */ |
2339fc93 LP |
472 | } |
473 | ||
8dd4c05b | 474 | static int service_add_fd_store_set(Service *s, FDSet *fds, const char *name) { |
2339fc93 LP |
475 | int r; |
476 | ||
477 | assert(s); | |
478 | ||
b0924635 | 479 | while (fdset_size(fds) > 0) { |
2339fc93 LP |
480 | _cleanup_close_ int fd = -1; |
481 | ||
482 | fd = fdset_steal_first(fds); | |
483 | if (fd < 0) | |
484 | break; | |
485 | ||
8dd4c05b | 486 | r = service_add_fd_store(s, fd, name); |
b0924635 ZJS |
487 | if (r == -EXFULL) |
488 | return log_unit_warning_errno(UNIT(s), r, | |
489 | "Cannot store more fds than FileDescriptorStoreMax=%u, closing remaining.", | |
490 | s->n_fd_store_max); | |
2339fc93 | 491 | if (r < 0) |
b0924635 | 492 | return log_unit_error_errno(UNIT(s), r, "Failed to add fd to store: %m"); |
9021ff17 | 493 | if (r > 0) |
16f70d63 | 494 | log_unit_debug(UNIT(s), "Added fd %u (%s) to fd store.", fd, strna(name)); |
9021ff17 | 495 | fd = -1; |
2339fc93 LP |
496 | } |
497 | ||
2339fc93 LP |
498 | return 0; |
499 | } | |
500 | ||
e78ee06d LP |
501 | static void service_remove_fd_store(Service *s, const char *name) { |
502 | ServiceFDStore *fs, *n; | |
503 | ||
504 | assert(s); | |
505 | assert(name); | |
506 | ||
507 | LIST_FOREACH_SAFE(fd_store, fs, n, s->fd_store) { | |
508 | if (!streq(fs->fdname, name)) | |
509 | continue; | |
510 | ||
511 | log_unit_debug(UNIT(s), "Got explicit request to remove fd %i (%s), closing.", fs->fd, name); | |
512 | service_fd_store_unlink(fs); | |
513 | } | |
514 | } | |
515 | ||
718db961 LP |
516 | static int service_arm_timer(Service *s, usec_t usec) { |
517 | int r; | |
518 | ||
519 | assert(s); | |
520 | ||
718db961 | 521 | if (s->timer_event_source) { |
36c16a7c | 522 | r = sd_event_source_set_time(s->timer_event_source, usec); |
718db961 LP |
523 | if (r < 0) |
524 | return r; | |
525 | ||
526 | return sd_event_source_set_enabled(s->timer_event_source, SD_EVENT_ONESHOT); | |
527 | } | |
528 | ||
36c16a7c LP |
529 | if (usec == USEC_INFINITY) |
530 | return 0; | |
531 | ||
7dfbe2e3 | 532 | r = sd_event_add_time( |
6a0f1f6d LP |
533 | UNIT(s)->manager->event, |
534 | &s->timer_event_source, | |
535 | CLOCK_MONOTONIC, | |
36c16a7c | 536 | usec, 0, |
6a0f1f6d | 537 | service_dispatch_timer, s); |
7dfbe2e3 TG |
538 | if (r < 0) |
539 | return r; | |
540 | ||
541 | (void) sd_event_source_set_description(s->timer_event_source, "service-timer"); | |
542 | ||
543 | return 0; | |
44d8db9e LP |
544 | } |
545 | ||
243b1432 LP |
546 | static int service_verify(Service *s) { |
547 | assert(s); | |
548 | ||
1124fe6f | 549 | if (UNIT(s)->load_state != UNIT_LOADED) |
243b1432 LP |
550 | return 0; |
551 | ||
3f00d379 ZJS |
552 | if (!s->exec_command[SERVICE_EXEC_START] && !s->exec_command[SERVICE_EXEC_STOP] |
553 | && UNIT(s)->success_action == EMERGENCY_ACTION_NONE) { | |
554 | /* FailureAction= only makes sense if one of the start or stop commands is specified. | |
555 | * SuccessAction= will be executed unconditionally if no commands are specified. Hence, | |
556 | * either a command or SuccessAction= are required. */ | |
557 | ||
558 | log_unit_error(UNIT(s), "Service has no ExecStart=, ExecStop=, or SuccessAction=. Refusing."); | |
6f40aa45 | 559 | return -ENOEXEC; |
243b1432 LP |
560 | } |
561 | ||
96fb8242 | 562 | if (s->type != SERVICE_ONESHOT && !s->exec_command[SERVICE_EXEC_START]) { |
f2341e0a | 563 | log_unit_error(UNIT(s), "Service has no ExecStart= setting, which is only allowed for Type=oneshot services. Refusing."); |
6f40aa45 | 564 | return -ENOEXEC; |
96fb8242 LP |
565 | } |
566 | ||
3f00d379 ZJS |
567 | if (!s->remain_after_exit && !s->exec_command[SERVICE_EXEC_START] && UNIT(s)->success_action == EMERGENCY_ACTION_NONE) { |
568 | log_unit_error(UNIT(s), "Service has no ExecStart= and no SuccessAction= settings and does not have RemainAfterExit=yes set. Refusing."); | |
6f40aa45 | 569 | return -ENOEXEC; |
96fb8242 LP |
570 | } |
571 | ||
572 | if (s->type != SERVICE_ONESHOT && s->exec_command[SERVICE_EXEC_START]->command_next) { | |
f2341e0a | 573 | log_unit_error(UNIT(s), "Service has more than one ExecStart= setting, which is only allowed for Type=oneshot services. Refusing."); |
6f40aa45 | 574 | return -ENOEXEC; |
6cf6bbc2 LP |
575 | } |
576 | ||
b0693d30 | 577 | if (s->type == SERVICE_ONESHOT && s->restart != SERVICE_RESTART_NO) { |
f2341e0a | 578 | log_unit_error(UNIT(s), "Service has Restart= setting other than no, which isn't allowed for Type=oneshot services. Refusing."); |
6f40aa45 | 579 | return -ENOEXEC; |
37520c1b LP |
580 | } |
581 | ||
55ebf98c | 582 | if (s->type == SERVICE_ONESHOT && !exit_status_set_is_empty(&s->restart_force_status)) { |
f2341e0a | 583 | log_unit_error(UNIT(s), "Service has RestartForceStatus= set, which isn't allowed for Type=oneshot services. Refusing."); |
6f40aa45 | 584 | return -ENOEXEC; |
b0693d30 MW |
585 | } |
586 | ||
05e343b7 | 587 | if (s->type == SERVICE_DBUS && !s->bus_name) { |
f2341e0a | 588 | log_unit_error(UNIT(s), "Service is of type D-Bus but no D-Bus service name has been specified. Refusing."); |
6f40aa45 | 589 | return -ENOEXEC; |
4d0e5dbd LP |
590 | } |
591 | ||
7e2668c6 | 592 | if (s->bus_name && s->type != SERVICE_DBUS) |
f2341e0a | 593 | log_unit_warning(UNIT(s), "Service has a D-Bus service name specified, but is not of type dbus. Ignoring."); |
7e2668c6 | 594 | |
3742095b | 595 | if (s->exec_context.pam_name && !IN_SET(s->kill_context.kill_mode, KILL_CONTROL_GROUP, KILL_MIXED)) { |
f2341e0a | 596 | log_unit_error(UNIT(s), "Service has PAM enabled. Kill mode must be set to 'control-group' or 'mixed'. Refusing."); |
6f40aa45 | 597 | return -ENOEXEC; |
05e343b7 LP |
598 | } |
599 | ||
6b7e5923 PS |
600 | if (s->usb_function_descriptors && !s->usb_function_strings) |
601 | log_unit_warning(UNIT(s), "Service has USBFunctionDescriptors= setting, but no USBFunctionStrings=. Ignoring."); | |
602 | ||
603 | if (!s->usb_function_descriptors && s->usb_function_strings) | |
604 | log_unit_warning(UNIT(s), "Service has USBFunctionStrings= setting, but no USBFunctionDescriptors=. Ignoring."); | |
605 | ||
36c16a7c LP |
606 | if (s->runtime_max_usec != USEC_INFINITY && s->type == SERVICE_ONESHOT) |
607 | log_unit_warning(UNIT(s), "MaxRuntimeSec= has no effect in combination with Type=oneshot. Ignoring."); | |
608 | ||
243b1432 LP |
609 | return 0; |
610 | } | |
611 | ||
a40eb732 LP |
612 | static int service_add_default_dependencies(Service *s) { |
613 | int r; | |
614 | ||
615 | assert(s); | |
616 | ||
45f06b34 LP |
617 | if (!UNIT(s)->default_dependencies) |
618 | return 0; | |
619 | ||
a40eb732 LP |
620 | /* Add a number of automatic dependencies useful for the |
621 | * majority of services. */ | |
622 | ||
463d0d15 | 623 | if (MANAGER_IS_SYSTEM(UNIT(s)->manager)) { |
cb4c247d LP |
624 | /* First, pull in the really early boot stuff, and |
625 | * require it, so that we fail if we can't acquire | |
626 | * it. */ | |
627 | ||
5a724170 | 628 | r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
cb4c247d LP |
629 | if (r < 0) |
630 | return r; | |
631 | } else { | |
632 | ||
633 | /* In the --user instance there's no sysinit.target, | |
634 | * in that case require basic.target instead. */ | |
635 | ||
35d8c19a | 636 | r = unit_add_dependency_by_name(UNIT(s), UNIT_REQUIRES, SPECIAL_BASIC_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
cb4c247d LP |
637 | if (r < 0) |
638 | return r; | |
639 | } | |
640 | ||
641 | /* Second, if the rest of the base system is in the same | |
642 | * transaction, order us after it, but do not pull it in or | |
643 | * even require it. */ | |
35d8c19a | 644 | r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_BASIC_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
fccd44ec KS |
645 | if (r < 0) |
646 | return r; | |
a40eb732 | 647 | |
cb4c247d | 648 | /* Third, add us in for normal shutdown. */ |
5a724170 | 649 | return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
a40eb732 LP |
650 | } |
651 | ||
4dfc092a LP |
652 | static void service_fix_output(Service *s) { |
653 | assert(s); | |
654 | ||
08f3be7a LP |
655 | /* If nothing has been explicitly configured, patch default output in. If input is socket/tty we avoid this |
656 | * however, since in that case we want output to default to the same place as we read input from. */ | |
4dfc092a LP |
657 | |
658 | if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT && | |
659 | s->exec_context.std_output == EXEC_OUTPUT_INHERIT && | |
660 | s->exec_context.std_input == EXEC_INPUT_NULL) | |
1124fe6f | 661 | s->exec_context.std_error = UNIT(s)->manager->default_std_error; |
4dfc092a LP |
662 | |
663 | if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT && | |
664 | s->exec_context.std_input == EXEC_INPUT_NULL) | |
1124fe6f | 665 | s->exec_context.std_output = UNIT(s)->manager->default_std_output; |
08f3be7a LP |
666 | |
667 | if (s->exec_context.std_input == EXEC_INPUT_NULL && | |
668 | s->exec_context.stdin_data_size > 0) | |
669 | s->exec_context.std_input = EXEC_INPUT_DATA; | |
4dfc092a LP |
670 | } |
671 | ||
45f06b34 LP |
672 | static int service_setup_bus_name(Service *s) { |
673 | int r; | |
674 | ||
675 | assert(s); | |
676 | ||
677 | if (!s->bus_name) | |
678 | return 0; | |
679 | ||
35d8c19a | 680 | r = unit_add_dependency_by_name(UNIT(s), UNIT_REQUIRES, SPECIAL_DBUS_SOCKET, true, UNIT_DEPENDENCY_FILE); |
222953e8 DR |
681 | if (r < 0) |
682 | return log_unit_error_errno(UNIT(s), r, "Failed to add dependency on " SPECIAL_DBUS_SOCKET ": %m"); | |
45f06b34 | 683 | |
a132bef0 | 684 | /* We always want to be ordered against dbus.socket if both are in the transaction. */ |
35d8c19a | 685 | r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_DBUS_SOCKET, true, UNIT_DEPENDENCY_FILE); |
45f06b34 | 686 | if (r < 0) |
92bed462 | 687 | return log_unit_error_errno(UNIT(s), r, "Failed to add dependency on " SPECIAL_DBUS_SOCKET ": %m"); |
45f06b34 LP |
688 | |
689 | r = unit_watch_bus_name(UNIT(s), s->bus_name); | |
690 | if (r == -EEXIST) | |
691 | return log_unit_error_errno(UNIT(s), r, "Two services allocated for the same bus name %s, refusing operation.", s->bus_name); | |
692 | if (r < 0) | |
693 | return log_unit_error_errno(UNIT(s), r, "Cannot watch bus name %s: %m", s->bus_name); | |
694 | ||
695 | return 0; | |
696 | } | |
697 | ||
8545f7ce LP |
698 | static int service_add_extras(Service *s) { |
699 | int r; | |
700 | ||
701 | assert(s); | |
702 | ||
703 | if (s->type == _SERVICE_TYPE_INVALID) { | |
704 | /* Figure out a type automatically */ | |
705 | if (s->bus_name) | |
706 | s->type = SERVICE_DBUS; | |
707 | else if (s->exec_command[SERVICE_EXEC_START]) | |
708 | s->type = SERVICE_SIMPLE; | |
709 | else | |
710 | s->type = SERVICE_ONESHOT; | |
711 | } | |
712 | ||
713 | /* Oneshot services have disabled start timeout by default */ | |
714 | if (s->type == SERVICE_ONESHOT && !s->start_timeout_defined) | |
36c16a7c | 715 | s->timeout_start_usec = USEC_INFINITY; |
8545f7ce LP |
716 | |
717 | service_fix_output(s); | |
718 | ||
719 | r = unit_patch_contexts(UNIT(s)); | |
720 | if (r < 0) | |
721 | return r; | |
722 | ||
723 | r = unit_add_exec_dependencies(UNIT(s), &s->exec_context); | |
724 | if (r < 0) | |
725 | return r; | |
726 | ||
d79200e2 | 727 | r = unit_set_default_slice(UNIT(s)); |
8545f7ce LP |
728 | if (r < 0) |
729 | return r; | |
730 | ||
4330dc03 AJ |
731 | /* If the service needs the notify socket, let's enable it automatically. */ |
732 | if (s->notify_access == NOTIFY_NONE && | |
733 | (s->type == SERVICE_NOTIFY || s->watchdog_usec > 0 || s->n_fd_store_max > 0)) | |
8545f7ce LP |
734 | s->notify_access = NOTIFY_MAIN; |
735 | ||
45f06b34 LP |
736 | r = service_add_default_dependencies(s); |
737 | if (r < 0) | |
738 | return r; | |
8545f7ce | 739 | |
45f06b34 LP |
740 | r = service_setup_bus_name(s); |
741 | if (r < 0) | |
742 | return r; | |
8545f7ce LP |
743 | |
744 | return 0; | |
745 | } | |
746 | ||
e537352b | 747 | static int service_load(Unit *u) { |
e537352b | 748 | Service *s = SERVICE(u); |
8bb2d17d | 749 | int r; |
e537352b LP |
750 | |
751 | assert(s); | |
1e2e8133 | 752 | |
5cb5a6ff | 753 | /* Load a .service file */ |
c2756a68 LP |
754 | r = unit_load_fragment(u); |
755 | if (r < 0) | |
5cb5a6ff LP |
756 | return r; |
757 | ||
23a177ef | 758 | /* Still nothing found? Then let's give up */ |
ac155bb8 | 759 | if (u->load_state == UNIT_STUB) |
23a177ef | 760 | return -ENOENT; |
034c6ed7 | 761 | |
23a177ef | 762 | /* This is a new unit? Then let's add in some extras */ |
ac155bb8 | 763 | if (u->load_state == UNIT_LOADED) { |
c2756a68 LP |
764 | |
765 | /* We were able to load something, then let's add in | |
766 | * the dropin directories. */ | |
767 | r = unit_load_dropin(u); | |
768 | if (r < 0) | |
769 | return r; | |
770 | ||
8545f7ce LP |
771 | /* This is a new unit? Then let's add in some |
772 | * extras */ | |
773 | r = service_add_extras(s); | |
598459ce LP |
774 | if (r < 0) |
775 | return r; | |
8e274523 LP |
776 | } |
777 | ||
243b1432 | 778 | return service_verify(s); |
034c6ed7 LP |
779 | } |
780 | ||
87f0e418 | 781 | static void service_dump(Unit *u, FILE *f, const char *prefix) { |
f2e18ef1 YW |
782 | char buf_restart[FORMAT_TIMESPAN_MAX], buf_start[FORMAT_TIMESPAN_MAX], buf_stop[FORMAT_TIMESPAN_MAX]; |
783 | char buf_runtime[FORMAT_TIMESPAN_MAX], buf_watchdog[FORMAT_TIMESPAN_MAX]; | |
5cb5a6ff | 784 | ServiceExecCommand c; |
87f0e418 | 785 | Service *s = SERVICE(u); |
47be870b | 786 | const char *prefix2; |
5cb5a6ff LP |
787 | |
788 | assert(s); | |
789 | ||
4c940960 | 790 | prefix = strempty(prefix); |
63c372cb | 791 | prefix2 = strjoina(prefix, "\t"); |
44d8db9e | 792 | |
5cb5a6ff | 793 | fprintf(f, |
81a2b7ce | 794 | "%sService State: %s\n" |
f42806df LP |
795 | "%sResult: %s\n" |
796 | "%sReload Result: %s\n" | |
81a2b7ce | 797 | "%sPermissionsStartOnly: %s\n" |
8e274523 | 798 | "%sRootDirectoryStartOnly: %s\n" |
02ee865a | 799 | "%sRemainAfterExit: %s\n" |
3185a36b | 800 | "%sGuessMainPID: %s\n" |
c952c6ec | 801 | "%sType: %s\n" |
2cf3143a | 802 | "%sRestart: %s\n" |
308d72dc LP |
803 | "%sNotifyAccess: %s\n" |
804 | "%sNotifyState: %s\n", | |
81a2b7ce | 805 | prefix, service_state_to_string(s->state), |
f42806df LP |
806 | prefix, service_result_to_string(s->result), |
807 | prefix, service_result_to_string(s->reload_result), | |
81a2b7ce | 808 | prefix, yes_no(s->permissions_start_only), |
8e274523 | 809 | prefix, yes_no(s->root_directory_start_only), |
02ee865a | 810 | prefix, yes_no(s->remain_after_exit), |
3185a36b | 811 | prefix, yes_no(s->guess_main_pid), |
c952c6ec | 812 | prefix, service_type_to_string(s->type), |
2cf3143a | 813 | prefix, service_restart_to_string(s->restart), |
308d72dc LP |
814 | prefix, notify_access_to_string(s->notify_access), |
815 | prefix, notify_state_to_string(s->notify_state)); | |
5cb5a6ff | 816 | |
70123e68 LP |
817 | if (s->control_pid > 0) |
818 | fprintf(f, | |
ccd06097 ZJS |
819 | "%sControl PID: "PID_FMT"\n", |
820 | prefix, s->control_pid); | |
70123e68 LP |
821 | |
822 | if (s->main_pid > 0) | |
823 | fprintf(f, | |
ccd06097 | 824 | "%sMain PID: "PID_FMT"\n" |
6dfa5494 LP |
825 | "%sMain PID Known: %s\n" |
826 | "%sMain PID Alien: %s\n", | |
ccd06097 | 827 | prefix, s->main_pid, |
6dfa5494 LP |
828 | prefix, yes_no(s->main_pid_known), |
829 | prefix, yes_no(s->main_pid_alien)); | |
70123e68 | 830 | |
034c6ed7 LP |
831 | if (s->pid_file) |
832 | fprintf(f, | |
833 | "%sPIDFile: %s\n", | |
834 | prefix, s->pid_file); | |
835 | ||
05e343b7 LP |
836 | if (s->bus_name) |
837 | fprintf(f, | |
838 | "%sBusName: %s\n" | |
839 | "%sBus Name Good: %s\n", | |
840 | prefix, s->bus_name, | |
841 | prefix, yes_no(s->bus_name_good)); | |
842 | ||
9dfb64f8 ZJS |
843 | if (UNIT_ISSET(s->accept_socket)) |
844 | fprintf(f, | |
845 | "%sAccept Socket: %s\n", | |
846 | prefix, UNIT_DEREF(s->accept_socket)->id); | |
847 | ||
c9d41699 YW |
848 | fprintf(f, |
849 | "%sRestartSec: %s\n" | |
850 | "%sTimeoutStartSec: %s\n" | |
851 | "%sTimeoutStopSec: %s\n" | |
852 | "%sRuntimeMaxSec: %s\n" | |
853 | "%sWatchdogSec: %s\n", | |
854 | prefix, format_timespan(buf_restart, sizeof(buf_restart), s->restart_usec, USEC_PER_SEC), | |
855 | prefix, format_timespan(buf_start, sizeof(buf_start), s->timeout_start_usec, USEC_PER_SEC), | |
856 | prefix, format_timespan(buf_stop, sizeof(buf_stop), s->timeout_stop_usec, USEC_PER_SEC), | |
857 | prefix, format_timespan(buf_runtime, sizeof(buf_runtime), s->runtime_max_usec, USEC_PER_SEC), | |
858 | prefix, format_timespan(buf_watchdog, sizeof(buf_watchdog), s->watchdog_usec, USEC_PER_SEC)); | |
859 | ||
4819ff03 | 860 | kill_context_dump(&s->kill_context, f, prefix); |
5cb5a6ff LP |
861 | exec_context_dump(&s->exec_context, f, prefix); |
862 | ||
e537352b | 863 | for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) { |
5cb5a6ff | 864 | |
44d8db9e LP |
865 | if (!s->exec_command[c]) |
866 | continue; | |
867 | ||
40d50879 | 868 | fprintf(f, "%s-> %s:\n", |
94f04347 | 869 | prefix, service_exec_command_to_string(c)); |
44d8db9e LP |
870 | |
871 | exec_command_dump_list(s->exec_command[c], f, prefix2); | |
5cb5a6ff | 872 | } |
44d8db9e | 873 | |
8c47c732 LP |
874 | if (s->status_text) |
875 | fprintf(f, "%sStatus Text: %s\n", | |
876 | prefix, s->status_text); | |
a354329f | 877 | |
ece174c5 | 878 | if (s->n_fd_store_max > 0) |
a354329f LP |
879 | fprintf(f, |
880 | "%sFile Descriptor Store Max: %u\n" | |
da6053d0 | 881 | "%sFile Descriptor Store Current: %zu\n", |
a354329f LP |
882 | prefix, s->n_fd_store_max, |
883 | prefix, s->n_fd_store); | |
18f573aa LP |
884 | |
885 | cgroup_context_dump(&s->cgroup_context, f, prefix); | |
5cb5a6ff LP |
886 | } |
887 | ||
db256aab LP |
888 | static int service_is_suitable_main_pid(Service *s, pid_t pid, int prio) { |
889 | Unit *owner; | |
890 | ||
891 | assert(s); | |
892 | assert(pid_is_valid(pid)); | |
893 | ||
894 | /* Checks whether the specified PID is suitable as main PID for this service. returns negative if not, 0 if the | |
895 | * PID is questionnable but should be accepted if the source of configuration is trusted. > 0 if the PID is | |
896 | * good */ | |
897 | ||
898 | if (pid == getpid_cached() || pid == 1) { | |
899 | log_unit_full(UNIT(s), prio, 0, "New main PID "PID_FMT" is the manager, refusing.", pid); | |
900 | return -EPERM; | |
901 | } | |
902 | ||
903 | if (pid == s->control_pid) { | |
904 | log_unit_full(UNIT(s), prio, 0, "New main PID "PID_FMT" is the control process, refusing.", pid); | |
905 | return -EPERM; | |
906 | } | |
907 | ||
908 | if (!pid_is_alive(pid)) { | |
909 | log_unit_full(UNIT(s), prio, 0, "New main PID "PID_FMT" does not exist or is a zombie.", pid); | |
910 | return -ESRCH; | |
911 | } | |
912 | ||
913 | owner = manager_get_unit_by_pid(UNIT(s)->manager, pid); | |
914 | if (owner == UNIT(s)) { | |
915 | log_unit_debug(UNIT(s), "New main PID "PID_FMT" belongs to service, we are happy.", pid); | |
916 | return 1; /* Yay, it's definitely a good PID */ | |
917 | } | |
918 | ||
919 | return 0; /* Hmm it's a suspicious PID, let's accept it if configuration source is trusted */ | |
920 | } | |
921 | ||
c5419d42 | 922 | static int service_load_pid_file(Service *s, bool may_warn) { |
db256aab | 923 | char procfs[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; |
73969ab6 | 924 | bool questionable_pid_file = false; |
7fd1b19b | 925 | _cleanup_free_ char *k = NULL; |
db256aab LP |
926 | _cleanup_close_ int fd = -1; |
927 | int r, prio; | |
5925dd3c | 928 | pid_t pid; |
034c6ed7 LP |
929 | |
930 | assert(s); | |
931 | ||
034c6ed7 | 932 | if (!s->pid_file) |
13230d5d | 933 | return -ENOENT; |
034c6ed7 | 934 | |
db256aab LP |
935 | prio = may_warn ? LOG_INFO : LOG_DEBUG; |
936 | ||
937 | fd = chase_symlinks(s->pid_file, NULL, CHASE_OPEN|CHASE_SAFE, NULL); | |
36c97dec FB |
938 | if (fd == -ENOLINK) { |
939 | log_unit_full(UNIT(s), LOG_DEBUG, fd, "Potentially unsafe symlink chain, will now retry with relaxed checks: %s", s->pid_file); | |
73969ab6 LP |
940 | |
941 | questionable_pid_file = true; | |
942 | ||
943 | fd = chase_symlinks(s->pid_file, NULL, CHASE_OPEN, NULL); | |
944 | } | |
db256aab LP |
945 | if (fd < 0) |
946 | 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)); | |
947 | ||
948 | /* 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. */ | |
949 | xsprintf(procfs, "/proc/self/fd/%i", fd); | |
950 | r = read_one_line_file(procfs, &k); | |
951 | if (r < 0) | |
952 | 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 | 953 | |
5925dd3c | 954 | r = parse_pid(k, &pid); |
db256aab LP |
955 | if (r < 0) |
956 | return log_unit_full(UNIT(s), prio, r, "Failed to parse PID from file %s: %m", s->pid_file); | |
957 | ||
958 | if (s->main_pid_known && pid == s->main_pid) | |
959 | return 0; | |
960 | ||
961 | r = service_is_suitable_main_pid(s, pid, prio); | |
962 | if (r < 0) | |
5925dd3c | 963 | return r; |
db256aab LP |
964 | if (r == 0) { |
965 | struct stat st; | |
406eaf93 | 966 | |
73969ab6 LP |
967 | if (questionable_pid_file) { |
968 | log_unit_error(UNIT(s), "Refusing to accept PID outside of service control group, acquired through unsafe symlink chain: %s", s->pid_file); | |
969 | return -EPERM; | |
970 | } | |
971 | ||
db256aab LP |
972 | /* Hmm, it's not clear if the new main PID is safe. Let's allow this if the PID file is owned by root */ |
973 | ||
974 | if (fstat(fd, &st) < 0) | |
975 | return log_unit_error_errno(UNIT(s), errno, "Failed to fstat() PID file O_PATH fd: %m"); | |
976 | ||
977 | if (st.st_uid != 0) { | |
978 | 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); | |
979 | return -EPERM; | |
980 | } | |
981 | ||
982 | 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 |
983 | } |
984 | ||
db01f8b3 | 985 | if (s->main_pid_known) { |
f2341e0a | 986 | log_unit_debug(UNIT(s), "Main PID changing: "PID_FMT" -> "PID_FMT, s->main_pid, pid); |
8bb2d17d | 987 | |
db01f8b3 MS |
988 | service_unwatch_main_pid(s); |
989 | s->main_pid_known = false; | |
3a111838 | 990 | } else |
f2341e0a | 991 | log_unit_debug(UNIT(s), "Main PID loaded: "PID_FMT, pid); |
db01f8b3 | 992 | |
117dcc57 ZJS |
993 | r = service_set_main_pid(s, pid); |
994 | if (r < 0) | |
16f6025e LP |
995 | return r; |
996 | ||
117dcc57 | 997 | r = unit_watch_pid(UNIT(s), pid); |
e8b509d3 LP |
998 | if (r < 0) /* FIXME: we need to do something here */ |
999 | return log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" for service: %m", pid); | |
034c6ed7 | 1000 | |
db256aab | 1001 | return 1; |
034c6ed7 LP |
1002 | } |
1003 | ||
783e05d6 | 1004 | static void service_search_main_pid(Service *s) { |
efdb0237 | 1005 | pid_t pid = 0; |
4fbf50b3 LP |
1006 | int r; |
1007 | ||
1008 | assert(s); | |
1009 | ||
3185a36b LP |
1010 | /* If we know it anyway, don't ever fallback to unreliable |
1011 | * heuristics */ | |
4fbf50b3 | 1012 | if (s->main_pid_known) |
783e05d6 | 1013 | return; |
4fbf50b3 | 1014 | |
3185a36b | 1015 | if (!s->guess_main_pid) |
783e05d6 | 1016 | return; |
3185a36b | 1017 | |
4fbf50b3 LP |
1018 | assert(s->main_pid <= 0); |
1019 | ||
783e05d6 ZJS |
1020 | if (unit_search_main_pid(UNIT(s), &pid) < 0) |
1021 | return; | |
4fbf50b3 | 1022 | |
f2341e0a | 1023 | log_unit_debug(UNIT(s), "Main PID guessed: "PID_FMT, pid); |
783e05d6 ZJS |
1024 | if (service_set_main_pid(s, pid) < 0) |
1025 | return; | |
4fbf50b3 | 1026 | |
117dcc57 | 1027 | r = unit_watch_pid(UNIT(s), pid); |
783e05d6 | 1028 | if (r < 0) |
4fbf50b3 | 1029 | /* FIXME: we need to do something here */ |
f2341e0a | 1030 | log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" from: %m", pid); |
4fbf50b3 LP |
1031 | } |
1032 | ||
034c6ed7 LP |
1033 | static void service_set_state(Service *s, ServiceState state) { |
1034 | ServiceState old_state; | |
e056b01d | 1035 | const UnitActiveState *table; |
842129f5 | 1036 | |
5cb5a6ff LP |
1037 | assert(s); |
1038 | ||
6fcbec6f LP |
1039 | if (s->state != state) |
1040 | bus_unit_send_pending_change_signal(UNIT(s), false); | |
1041 | ||
e056b01d LP |
1042 | table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
1043 | ||
034c6ed7 | 1044 | old_state = s->state; |
5cb5a6ff | 1045 | s->state = state; |
034c6ed7 | 1046 | |
3a111838 MS |
1047 | service_unwatch_pid_file(s); |
1048 | ||
842129f5 LP |
1049 | if (!IN_SET(state, |
1050 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
36c16a7c | 1051 | SERVICE_RUNNING, |
842129f5 | 1052 | SERVICE_RELOAD, |
c87700a1 | 1053 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
842129f5 LP |
1054 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL, |
1055 | SERVICE_AUTO_RESTART)) | |
718db961 | 1056 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
034c6ed7 | 1057 | |
842129f5 LP |
1058 | if (!IN_SET(state, |
1059 | SERVICE_START, SERVICE_START_POST, | |
1060 | SERVICE_RUNNING, SERVICE_RELOAD, | |
c87700a1 | 1061 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf108e55 | 1062 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
5e94833f | 1063 | service_unwatch_main_pid(s); |
867b3b7d LP |
1064 | s->main_command = NULL; |
1065 | } | |
034c6ed7 | 1066 | |
842129f5 LP |
1067 | if (!IN_SET(state, |
1068 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
1069 | SERVICE_RELOAD, | |
c87700a1 | 1070 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
842129f5 | 1071 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
5e94833f | 1072 | service_unwatch_control_pid(s); |
034c6ed7 | 1073 | s->control_command = NULL; |
a16e1123 | 1074 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; |
e537352b | 1075 | } |
034c6ed7 | 1076 | |
50be4f4a | 1077 | if (IN_SET(state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART)) { |
a911bb9a | 1078 | unit_unwatch_all_pids(UNIT(s)); |
50be4f4a LP |
1079 | unit_dequeue_rewatch_pids(UNIT(s)); |
1080 | } | |
a911bb9a | 1081 | |
842129f5 LP |
1082 | if (!IN_SET(state, |
1083 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
1084 | SERVICE_RUNNING, SERVICE_RELOAD, | |
c87700a1 | 1085 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
57614eb1 | 1086 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL) && |
5cc3985e | 1087 | !(state == SERVICE_DEAD && UNIT(s)->job)) |
4f2d528d LP |
1088 | service_close_socket_fd(s); |
1089 | ||
5686391b LP |
1090 | if (state != SERVICE_START) |
1091 | s->exec_fd_event_source = sd_event_source_unref(s->exec_fd_event_source); | |
1092 | ||
7596e9e1 | 1093 | if (!IN_SET(state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
a6927d7f MO |
1094 | service_stop_watchdog(s); |
1095 | ||
f6023656 LP |
1096 | /* For the inactive states unit_notify() will trim the cgroup, |
1097 | * but for exit we have to do that ourselves... */ | |
2c289ea8 | 1098 | if (state == SERVICE_EXITED && !MANAGER_IS_RELOADING(UNIT(s)->manager)) |
efdb0237 | 1099 | unit_prune_cgroup(UNIT(s)); |
f6023656 | 1100 | |
e537352b | 1101 | if (old_state != state) |
f2341e0a | 1102 | log_unit_debug(UNIT(s), "Changed %s -> %s", service_state_to_string(old_state), service_state_to_string(state)); |
acbb0225 | 1103 | |
2ad2e41a LP |
1104 | unit_notify(UNIT(s), table[old_state], table[state], |
1105 | (s->reload_result == SERVICE_SUCCESS ? 0 : UNIT_NOTIFY_RELOAD_FAILURE) | | |
1106 | (s->will_auto_restart ? UNIT_NOTIFY_WILL_AUTO_RESTART : 0)); | |
034c6ed7 LP |
1107 | } |
1108 | ||
36c16a7c LP |
1109 | static usec_t service_coldplug_timeout(Service *s) { |
1110 | assert(s); | |
1111 | ||
1112 | switch (s->deserialized_state) { | |
1113 | ||
1114 | case SERVICE_START_PRE: | |
1115 | case SERVICE_START: | |
1116 | case SERVICE_START_POST: | |
1117 | case SERVICE_RELOAD: | |
1118 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->timeout_start_usec); | |
1119 | ||
1120 | case SERVICE_RUNNING: | |
1121 | return usec_add(UNIT(s)->active_enter_timestamp.monotonic, s->runtime_max_usec); | |
1122 | ||
1123 | case SERVICE_STOP: | |
c87700a1 | 1124 | case SERVICE_STOP_WATCHDOG: |
36c16a7c LP |
1125 | case SERVICE_STOP_SIGTERM: |
1126 | case SERVICE_STOP_SIGKILL: | |
1127 | case SERVICE_STOP_POST: | |
1128 | case SERVICE_FINAL_SIGTERM: | |
1129 | case SERVICE_FINAL_SIGKILL: | |
1130 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->timeout_stop_usec); | |
1131 | ||
1132 | case SERVICE_AUTO_RESTART: | |
1133 | return usec_add(UNIT(s)->inactive_enter_timestamp.monotonic, s->restart_usec); | |
1134 | ||
1135 | default: | |
1136 | return USEC_INFINITY; | |
1137 | } | |
1138 | } | |
1139 | ||
be847e82 | 1140 | static int service_coldplug(Unit *u) { |
a16e1123 LP |
1141 | Service *s = SERVICE(u); |
1142 | int r; | |
1143 | ||
1144 | assert(s); | |
1145 | assert(s->state == SERVICE_DEAD); | |
1146 | ||
930d2838 LP |
1147 | if (s->deserialized_state == s->state) |
1148 | return 0; | |
6c12b52e | 1149 | |
36c16a7c LP |
1150 | r = service_arm_timer(s, service_coldplug_timeout(s)); |
1151 | if (r < 0) | |
1152 | return r; | |
a911bb9a | 1153 | |
930d2838 LP |
1154 | if (s->main_pid > 0 && |
1155 | pid_is_unwaited(s->main_pid) && | |
9acac212 | 1156 | (IN_SET(s->deserialized_state, |
930d2838 LP |
1157 | SERVICE_START, SERVICE_START_POST, |
1158 | SERVICE_RUNNING, SERVICE_RELOAD, | |
c87700a1 | 1159 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
930d2838 LP |
1160 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL))) { |
1161 | r = unit_watch_pid(UNIT(s), s->main_pid); | |
1162 | if (r < 0) | |
1163 | return r; | |
1164 | } | |
bb242b7b | 1165 | |
930d2838 LP |
1166 | if (s->control_pid > 0 && |
1167 | pid_is_unwaited(s->control_pid) && | |
1168 | IN_SET(s->deserialized_state, | |
1169 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
1170 | SERVICE_RELOAD, | |
c87700a1 | 1171 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
930d2838 LP |
1172 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
1173 | r = unit_watch_pid(UNIT(s), s->control_pid); | |
1174 | if (r < 0) | |
1175 | return r; | |
a16e1123 | 1176 | } |
92c1622e | 1177 | |
e8a565cb | 1178 | if (!IN_SET(s->deserialized_state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART)) { |
50be4f4a | 1179 | (void) unit_enqueue_rewatch_pids(u); |
29206d46 | 1180 | (void) unit_setup_dynamic_creds(u); |
e8a565cb YW |
1181 | (void) unit_setup_exec_runtime(u); |
1182 | } | |
29206d46 | 1183 | |
50be4f4a LP |
1184 | if (IN_SET(s->deserialized_state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
1185 | service_start_watchdog(s); | |
1186 | ||
3ebcd323 ZJS |
1187 | if (UNIT_ISSET(s->accept_socket)) { |
1188 | Socket* socket = SOCKET(UNIT_DEREF(s->accept_socket)); | |
1189 | ||
1190 | if (socket->max_connections_per_source > 0) { | |
1191 | SocketPeer *peer; | |
1192 | ||
1193 | /* Make a best-effort attempt at bumping the connection count */ | |
1194 | if (socket_acquire_peer(socket, s->socket_fd, &peer) > 0) { | |
1195 | socket_peer_unref(s->peer); | |
1196 | s->peer = peer; | |
1197 | } | |
1198 | } | |
1199 | } | |
1200 | ||
930d2838 | 1201 | service_set_state(s, s->deserialized_state); |
a16e1123 LP |
1202 | return 0; |
1203 | } | |
1204 | ||
25b583d7 LP |
1205 | static int service_collect_fds( |
1206 | Service *s, | |
1207 | int **fds, | |
1208 | char ***fd_names, | |
1209 | size_t *n_socket_fds, | |
1210 | size_t *n_storage_fds) { | |
4c47affc | 1211 | |
8dd4c05b | 1212 | _cleanup_strv_free_ char **rfd_names = NULL; |
a354329f | 1213 | _cleanup_free_ int *rfds = NULL; |
25b583d7 | 1214 | size_t rn_socket_fds = 0, rn_storage_fds = 0; |
4c47affc | 1215 | int r; |
44d8db9e LP |
1216 | |
1217 | assert(s); | |
1218 | assert(fds); | |
8dd4c05b | 1219 | assert(fd_names); |
9b141911 | 1220 | assert(n_socket_fds); |
25b583d7 | 1221 | assert(n_storage_fds); |
44d8db9e | 1222 | |
8dd4c05b | 1223 | if (s->socket_fd >= 0) { |
6cf6bbc2 | 1224 | |
8dd4c05b | 1225 | /* Pass the per-connection socket */ |
57020a3a | 1226 | |
8dd4c05b LP |
1227 | rfds = new(int, 1); |
1228 | if (!rfds) | |
1229 | return -ENOMEM; | |
1230 | rfds[0] = s->socket_fd; | |
57020a3a | 1231 | |
bea1a013 | 1232 | rfd_names = strv_new("connection"); |
8dd4c05b LP |
1233 | if (!rfd_names) |
1234 | return -ENOMEM; | |
44d8db9e | 1235 | |
4c47affc | 1236 | rn_socket_fds = 1; |
8dd4c05b LP |
1237 | } else { |
1238 | Iterator i; | |
eef85c4a | 1239 | void *v; |
8dd4c05b | 1240 | Unit *u; |
44d8db9e | 1241 | |
8dd4c05b | 1242 | /* Pass all our configured sockets for singleton services */ |
44d8db9e | 1243 | |
eef85c4a | 1244 | HASHMAP_FOREACH_KEY(v, u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) { |
8dd4c05b LP |
1245 | _cleanup_free_ int *cfds = NULL; |
1246 | Socket *sock; | |
1247 | int cn_fds; | |
44d8db9e | 1248 | |
8dd4c05b LP |
1249 | if (u->type != UNIT_SOCKET) |
1250 | continue; | |
44d8db9e | 1251 | |
8dd4c05b | 1252 | sock = SOCKET(u); |
a354329f | 1253 | |
8dd4c05b LP |
1254 | cn_fds = socket_collect_fds(sock, &cfds); |
1255 | if (cn_fds < 0) | |
1256 | return cn_fds; | |
44d8db9e | 1257 | |
8dd4c05b LP |
1258 | if (cn_fds <= 0) |
1259 | continue; | |
79c7626d | 1260 | |
8dd4c05b | 1261 | if (!rfds) { |
1cc6c93a | 1262 | rfds = TAKE_PTR(cfds); |
4c47affc | 1263 | rn_socket_fds = cn_fds; |
8dd4c05b LP |
1264 | } else { |
1265 | int *t; | |
1266 | ||
62d74c78 | 1267 | t = reallocarray(rfds, rn_socket_fds + cn_fds, sizeof(int)); |
8dd4c05b LP |
1268 | if (!t) |
1269 | return -ENOMEM; | |
1270 | ||
4c47affc | 1271 | memcpy(t + rn_socket_fds, cfds, cn_fds * sizeof(int)); |
8dd4c05b LP |
1272 | |
1273 | rfds = t; | |
4c47affc | 1274 | rn_socket_fds += cn_fds; |
8dd4c05b LP |
1275 | } |
1276 | ||
1277 | r = strv_extend_n(&rfd_names, socket_fdname(sock), cn_fds); | |
1278 | if (r < 0) | |
1279 | return r; | |
44d8db9e LP |
1280 | } |
1281 | } | |
1282 | ||
a354329f LP |
1283 | if (s->n_fd_store > 0) { |
1284 | ServiceFDStore *fs; | |
25b583d7 | 1285 | size_t n_fds; |
8dd4c05b | 1286 | char **nl; |
a354329f LP |
1287 | int *t; |
1288 | ||
62d74c78 | 1289 | t = reallocarray(rfds, rn_socket_fds + s->n_fd_store, sizeof(int)); |
a354329f LP |
1290 | if (!t) |
1291 | return -ENOMEM; | |
1292 | ||
1293 | rfds = t; | |
8dd4c05b | 1294 | |
62d74c78 | 1295 | nl = reallocarray(rfd_names, rn_socket_fds + s->n_fd_store + 1, sizeof(char *)); |
8dd4c05b LP |
1296 | if (!nl) |
1297 | return -ENOMEM; | |
1298 | ||
1299 | rfd_names = nl; | |
4c47affc | 1300 | n_fds = rn_socket_fds; |
8dd4c05b LP |
1301 | |
1302 | LIST_FOREACH(fd_store, fs, s->fd_store) { | |
4c47affc FB |
1303 | rfds[n_fds] = fs->fd; |
1304 | rfd_names[n_fds] = strdup(strempty(fs->fdname)); | |
1305 | if (!rfd_names[n_fds]) | |
8dd4c05b LP |
1306 | return -ENOMEM; |
1307 | ||
4c47affc FB |
1308 | rn_storage_fds++; |
1309 | n_fds++; | |
8dd4c05b LP |
1310 | } |
1311 | ||
4c47affc | 1312 | rfd_names[n_fds] = NULL; |
a354329f LP |
1313 | } |
1314 | ||
1cc6c93a YW |
1315 | *fds = TAKE_PTR(rfds); |
1316 | *fd_names = TAKE_PTR(rfd_names); | |
9b141911 | 1317 | *n_socket_fds = rn_socket_fds; |
4c47affc | 1318 | *n_storage_fds = rn_storage_fds; |
3e33402a | 1319 | |
4c47affc | 1320 | return 0; |
44d8db9e LP |
1321 | } |
1322 | ||
5686391b LP |
1323 | static int service_allocate_exec_fd_event_source( |
1324 | Service *s, | |
1325 | int fd, | |
1326 | sd_event_source **ret_event_source) { | |
1327 | ||
1328 | _cleanup_(sd_event_source_unrefp) sd_event_source *source = NULL; | |
1329 | int r; | |
1330 | ||
1331 | assert(s); | |
1332 | assert(fd >= 0); | |
1333 | assert(ret_event_source); | |
1334 | ||
1335 | r = sd_event_add_io(UNIT(s)->manager->event, &source, fd, 0, service_dispatch_exec_io, s); | |
1336 | if (r < 0) | |
1337 | return log_unit_error_errno(UNIT(s), r, "Failed to allocate exec_fd event source: %m"); | |
1338 | ||
1339 | /* This is a bit lower priority than SIGCHLD, as that carries a lot more interesting failure information */ | |
1340 | ||
1341 | r = sd_event_source_set_priority(source, SD_EVENT_PRIORITY_NORMAL-3); | |
1342 | if (r < 0) | |
1343 | return log_unit_error_errno(UNIT(s), r, "Failed to adjust priority of exec_fd event source: %m"); | |
1344 | ||
1345 | (void) sd_event_source_set_description(source, "service event_fd"); | |
1346 | ||
1347 | r = sd_event_source_set_io_fd_own(source, true); | |
1348 | if (r < 0) | |
1349 | return log_unit_error_errno(UNIT(s), r, "Failed to pass ownership of fd to event source: %m"); | |
1350 | ||
1351 | *ret_event_source = TAKE_PTR(source); | |
1352 | return 0; | |
1353 | } | |
1354 | ||
1355 | static int service_allocate_exec_fd( | |
1356 | Service *s, | |
1357 | sd_event_source **ret_event_source, | |
1358 | int* ret_exec_fd) { | |
1359 | ||
1360 | _cleanup_close_pair_ int p[2] = { -1, -1 }; | |
1361 | int r; | |
1362 | ||
1363 | assert(s); | |
1364 | assert(ret_event_source); | |
1365 | assert(ret_exec_fd); | |
1366 | ||
1367 | if (pipe2(p, O_CLOEXEC|O_NONBLOCK) < 0) | |
1368 | return log_unit_error_errno(UNIT(s), errno, "Failed to allocate exec_fd pipe: %m"); | |
1369 | ||
1370 | r = service_allocate_exec_fd_event_source(s, p[0], ret_event_source); | |
1371 | if (r < 0) | |
1372 | return r; | |
1373 | ||
1374 | p[0] = -1; | |
1375 | *ret_exec_fd = TAKE_FD(p[1]); | |
1376 | ||
1377 | return 0; | |
1378 | } | |
1379 | ||
6375bd20 JW |
1380 | static bool service_exec_needs_notify_socket(Service *s, ExecFlags flags) { |
1381 | assert(s); | |
1382 | ||
1383 | /* Notifications are accepted depending on the process and | |
1384 | * the access setting of the service: | |
1385 | * process: \ access: NONE MAIN EXEC ALL | |
1386 | * main no yes yes yes | |
1387 | * control no no yes yes | |
1388 | * other (forked) no no no yes */ | |
1389 | ||
1390 | if (flags & EXEC_IS_CONTROL) | |
1391 | /* A control process */ | |
1392 | return IN_SET(s->notify_access, NOTIFY_EXEC, NOTIFY_ALL); | |
1393 | ||
1394 | /* We only spawn main processes and control processes, so any | |
1395 | * process that is not a control process is a main process */ | |
1396 | return s->notify_access != NOTIFY_NONE; | |
1397 | } | |
1398 | ||
81a2b7ce LP |
1399 | static int service_spawn( |
1400 | Service *s, | |
1401 | ExecCommand *c, | |
21b2ce39 | 1402 | usec_t timeout, |
c39f1ce2 | 1403 | ExecFlags flags, |
81a2b7ce LP |
1404 | pid_t *_pid) { |
1405 | ||
b9c04eaf | 1406 | _cleanup_(exec_params_clear) ExecParameters exec_params = { |
c39f1ce2 LP |
1407 | .flags = flags, |
1408 | .stdin_fd = -1, | |
1409 | .stdout_fd = -1, | |
1410 | .stderr_fd = -1, | |
25b583d7 | 1411 | .exec_fd = -1, |
9fa95f85 | 1412 | }; |
3c7416b6 | 1413 | _cleanup_strv_free_ char **final_env = NULL, **our_env = NULL, **fd_names = NULL; |
5686391b | 1414 | _cleanup_(sd_event_source_unrefp) sd_event_source *exec_fd_source = NULL; |
25b583d7 | 1415 | size_t n_socket_fds = 0, n_storage_fds = 0, n_env = 0; |
5686391b | 1416 | _cleanup_close_ int exec_fd = -1; |
3c7416b6 LP |
1417 | _cleanup_free_ int *fds = NULL; |
1418 | pid_t pid; | |
8dd4c05b LP |
1419 | int r; |
1420 | ||
034c6ed7 LP |
1421 | assert(s); |
1422 | assert(c); | |
1423 | assert(_pid); | |
1424 | ||
78f93209 | 1425 | r = unit_prepare_exec(UNIT(s)); /* This realizes the cgroup, among other things */ |
3c7416b6 LP |
1426 | if (r < 0) |
1427 | return r; | |
1428 | ||
9c1a61ad LP |
1429 | if (flags & EXEC_IS_CONTROL) { |
1430 | /* If this is a control process, mask the permissions/chroot application if this is requested. */ | |
1431 | if (s->permissions_start_only) | |
1703fa41 | 1432 | exec_params.flags &= ~EXEC_APPLY_SANDBOXING; |
9c1a61ad LP |
1433 | if (s->root_directory_start_only) |
1434 | exec_params.flags &= ~EXEC_APPLY_CHROOT; | |
1435 | } | |
1436 | ||
c39f1ce2 | 1437 | if ((flags & EXEC_PASS_FDS) || |
6cf6bbc2 LP |
1438 | s->exec_context.std_input == EXEC_INPUT_SOCKET || |
1439 | s->exec_context.std_output == EXEC_OUTPUT_SOCKET || | |
1440 | s->exec_context.std_error == EXEC_OUTPUT_SOCKET) { | |
1441 | ||
25b583d7 | 1442 | r = service_collect_fds(s, &fds, &fd_names, &n_socket_fds, &n_storage_fds); |
8dd4c05b | 1443 | if (r < 0) |
36c16a7c | 1444 | return r; |
6cf6bbc2 | 1445 | |
25b583d7 | 1446 | log_unit_debug(UNIT(s), "Passing %zu fds to service", n_socket_fds + n_storage_fds); |
4f2d528d | 1447 | } |
44d8db9e | 1448 | |
5686391b LP |
1449 | if (!FLAGS_SET(flags, EXEC_IS_CONTROL) && s->type == SERVICE_EXEC) { |
1450 | assert(!s->exec_fd_event_source); | |
1451 | ||
1452 | r = service_allocate_exec_fd(s, &exec_fd_source, &exec_fd); | |
1453 | if (r < 0) | |
1454 | return r; | |
1455 | } | |
1456 | ||
36c16a7c LP |
1457 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), timeout)); |
1458 | if (r < 0) | |
1459 | return r; | |
034c6ed7 | 1460 | |
dcf3c3c3 | 1461 | our_env = new0(char*, 10); |
36c16a7c LP |
1462 | if (!our_env) |
1463 | return -ENOMEM; | |
c952c6ec | 1464 | |
6375bd20 | 1465 | if (service_exec_needs_notify_socket(s, flags)) |
36c16a7c LP |
1466 | if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) |
1467 | return -ENOMEM; | |
c952c6ec | 1468 | |
2105e76a | 1469 | if (s->main_pid > 0) |
36c16a7c LP |
1470 | if (asprintf(our_env + n_env++, "MAINPID="PID_FMT, s->main_pid) < 0) |
1471 | return -ENOMEM; | |
2105e76a | 1472 | |
c39f1ce2 | 1473 | if (MANAGER_IS_USER(UNIT(s)->manager)) |
df0ff127 | 1474 | if (asprintf(our_env + n_env++, "MANAGERPID="PID_FMT, getpid_cached()) < 0) |
36c16a7c | 1475 | return -ENOMEM; |
97ae63e2 | 1476 | |
dcf3c3c3 LP |
1477 | if (s->pid_file) |
1478 | if (asprintf(our_env + n_env++, "PIDFILE=%s", s->pid_file) < 0) | |
1479 | return -ENOMEM; | |
1480 | ||
8dd4c05b | 1481 | if (s->socket_fd >= 0) { |
3b1c5241 SL |
1482 | union sockaddr_union sa; |
1483 | socklen_t salen = sizeof(sa); | |
1484 | ||
f56e7bfe LP |
1485 | /* If this is a per-connection service instance, let's set $REMOTE_ADDR and $REMOTE_PORT to something |
1486 | * useful. Note that we do this only when we are still connected at this point in time, which we might | |
1487 | * very well not be. Hence we ignore all errors when retrieving peer information (as that might result | |
1488 | * in ENOTCONN), and just use whate we can use. */ | |
f2dbd059 | 1489 | |
f56e7bfe LP |
1490 | if (getpeername(s->socket_fd, &sa.sa, &salen) >= 0 && |
1491 | IN_SET(sa.sa.sa_family, AF_INET, AF_INET6, AF_VSOCK)) { | |
3b1c5241 | 1492 | |
3b1c5241 SL |
1493 | _cleanup_free_ char *addr = NULL; |
1494 | char *t; | |
882ac6e7 | 1495 | unsigned port; |
3b1c5241 SL |
1496 | |
1497 | r = sockaddr_pretty(&sa.sa, salen, true, false, &addr); | |
1498 | if (r < 0) | |
36c16a7c | 1499 | return r; |
3b1c5241 SL |
1500 | |
1501 | t = strappend("REMOTE_ADDR=", addr); | |
36c16a7c LP |
1502 | if (!t) |
1503 | return -ENOMEM; | |
3b1c5241 SL |
1504 | our_env[n_env++] = t; |
1505 | ||
882ac6e7 SH |
1506 | r = sockaddr_port(&sa.sa, &port); |
1507 | if (r < 0) | |
1508 | return r; | |
3b1c5241 | 1509 | |
36c16a7c LP |
1510 | if (asprintf(&t, "REMOTE_PORT=%u", port) < 0) |
1511 | return -ENOMEM; | |
3b1c5241 SL |
1512 | our_env[n_env++] = t; |
1513 | } | |
1514 | } | |
1515 | ||
136dc4c4 LP |
1516 | if (flags & EXEC_SETENV_RESULT) { |
1517 | if (asprintf(our_env + n_env++, "SERVICE_RESULT=%s", service_result_to_string(s->result)) < 0) | |
1518 | return -ENOMEM; | |
1519 | ||
1520 | if (s->main_exec_status.pid > 0 && | |
1521 | dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) { | |
1522 | if (asprintf(our_env + n_env++, "EXIT_CODE=%s", sigchld_code_to_string(s->main_exec_status.code)) < 0) | |
1523 | return -ENOMEM; | |
1524 | ||
1525 | if (s->main_exec_status.code == CLD_EXITED) | |
1526 | r = asprintf(our_env + n_env++, "EXIT_STATUS=%i", s->main_exec_status.status); | |
1527 | else | |
1528 | r = asprintf(our_env + n_env++, "EXIT_STATUS=%s", signal_to_string(s->main_exec_status.status)); | |
1529 | if (r < 0) | |
1530 | return -ENOMEM; | |
1531 | } | |
1532 | } | |
1533 | ||
1ad6e8b3 LP |
1534 | r = unit_set_exec_params(UNIT(s), &exec_params); |
1535 | if (r < 0) | |
1536 | return r; | |
3536f49e YW |
1537 | |
1538 | final_env = strv_env_merge(2, exec_params.environment, our_env, NULL); | |
36c16a7c LP |
1539 | if (!final_env) |
1540 | return -ENOMEM; | |
c952c6ec | 1541 | |
ac647978 LP |
1542 | /* System D-Bus needs nss-systemd disabled, so that we don't deadlock */ |
1543 | SET_FLAG(exec_params.flags, EXEC_NSS_BYPASS_BUS, | |
1544 | MANAGER_IS_SYSTEM(UNIT(s)->manager) && unit_has_name(UNIT(s), SPECIAL_DBUS_SERVICE)); | |
4ad49000 | 1545 | |
b9c04eaf | 1546 | strv_free_and_replace(exec_params.environment, final_env); |
9fa95f85 | 1547 | exec_params.fds = fds; |
8dd4c05b | 1548 | exec_params.fd_names = fd_names; |
9b141911 | 1549 | exec_params.n_socket_fds = n_socket_fds; |
25b583d7 | 1550 | exec_params.n_storage_fds = n_storage_fds; |
34b3f625 | 1551 | exec_params.watchdog_usec = service_get_watchdog_usec(s); |
a34ceba6 | 1552 | exec_params.selinux_context_net = s->socket_fd_selinux_context_net; |
9fa95f85 DM |
1553 | if (s->type == SERVICE_IDLE) |
1554 | exec_params.idle_pipe = UNIT(s)->manager->idle_pipe; | |
a34ceba6 LP |
1555 | exec_params.stdin_fd = s->stdin_fd; |
1556 | exec_params.stdout_fd = s->stdout_fd; | |
1557 | exec_params.stderr_fd = s->stderr_fd; | |
5686391b | 1558 | exec_params.exec_fd = exec_fd; |
9fa95f85 | 1559 | |
f2341e0a LP |
1560 | r = exec_spawn(UNIT(s), |
1561 | c, | |
9e2f7c11 | 1562 | &s->exec_context, |
9fa95f85 | 1563 | &exec_params, |
613b411c | 1564 | s->exec_runtime, |
29206d46 | 1565 | &s->dynamic_creds, |
9e2f7c11 | 1566 | &pid); |
9e2f7c11 | 1567 | if (r < 0) |
36c16a7c | 1568 | return r; |
034c6ed7 | 1569 | |
5686391b LP |
1570 | s->exec_fd_event_source = TAKE_PTR(exec_fd_source); |
1571 | s->exec_fd_hot = false; | |
1572 | ||
117dcc57 | 1573 | r = unit_watch_pid(UNIT(s), pid); |
e8b509d3 | 1574 | if (r < 0) /* FIXME: we need to do something here */ |
36c16a7c | 1575 | return r; |
034c6ed7 LP |
1576 | |
1577 | *_pid = pid; | |
1578 | ||
5cb5a6ff | 1579 | return 0; |
034c6ed7 LP |
1580 | } |
1581 | ||
80876c20 LP |
1582 | static int main_pid_good(Service *s) { |
1583 | assert(s); | |
1584 | ||
51894d70 | 1585 | /* Returns 0 if the pid is dead, > 0 if it is good, < 0 if we don't know */ |
80876c20 | 1586 | |
fc08079e | 1587 | /* If we know the pid file, then let's just check if it is |
80876c20 | 1588 | * still valid */ |
6dfa5494 LP |
1589 | if (s->main_pid_known) { |
1590 | ||
1591 | /* If it's an alien child let's check if it is still | |
1592 | * alive ... */ | |
62220cf7 | 1593 | if (s->main_pid_alien && s->main_pid > 0) |
9f5650ae | 1594 | return pid_is_alive(s->main_pid); |
6dfa5494 LP |
1595 | |
1596 | /* .. otherwise assume we'll get a SIGCHLD for it, | |
1597 | * which we really should wait for to collect exit | |
1598 | * status and code */ | |
80876c20 | 1599 | return s->main_pid > 0; |
6dfa5494 | 1600 | } |
80876c20 LP |
1601 | |
1602 | /* We don't know the pid */ | |
1603 | return -EAGAIN; | |
1604 | } | |
1605 | ||
019be286 | 1606 | static int control_pid_good(Service *s) { |
80876c20 LP |
1607 | assert(s); |
1608 | ||
07697d7e LP |
1609 | /* Returns 0 if the control PID is dead, > 0 if it is good. We never actually return < 0 here, but in order to |
1610 | * make this function as similar as possible to main_pid_good() and cgroup_good(), we pretend that < 0 also | |
1611 | * means: we can't figure it out. */ | |
1612 | ||
80876c20 LP |
1613 | return s->control_pid > 0; |
1614 | } | |
1615 | ||
1616 | static int cgroup_good(Service *s) { | |
1617 | int r; | |
1618 | ||
1619 | assert(s); | |
1620 | ||
07697d7e LP |
1621 | /* Returns 0 if the cgroup is empty or doesn't exist, > 0 if it is exists and is populated, < 0 if we can't |
1622 | * figure it out */ | |
1623 | ||
4ad49000 LP |
1624 | if (!UNIT(s)->cgroup_path) |
1625 | return 0; | |
1626 | ||
6f883237 | 1627 | r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, UNIT(s)->cgroup_path); |
117dcc57 | 1628 | if (r < 0) |
80876c20 LP |
1629 | return r; |
1630 | ||
b13ddbbc | 1631 | return r == 0; |
80876c20 LP |
1632 | } |
1633 | ||
a509f0e6 LP |
1634 | static bool service_shall_restart(Service *s) { |
1635 | assert(s); | |
1636 | ||
1637 | /* Don't restart after manual stops */ | |
1638 | if (s->forbid_restart) | |
1639 | return false; | |
1640 | ||
1641 | /* Never restart if this is configured as special exception */ | |
1642 | if (exit_status_set_test(&s->restart_prevent_status, s->main_exec_status.code, s->main_exec_status.status)) | |
1643 | return false; | |
1644 | ||
1645 | /* Restart if the exit code/status are configured as restart triggers */ | |
1646 | if (exit_status_set_test(&s->restart_force_status, s->main_exec_status.code, s->main_exec_status.status)) | |
1647 | return true; | |
1648 | ||
1649 | switch (s->restart) { | |
1650 | ||
1651 | case SERVICE_RESTART_NO: | |
1652 | return false; | |
1653 | ||
1654 | case SERVICE_RESTART_ALWAYS: | |
1655 | return true; | |
1656 | ||
1657 | case SERVICE_RESTART_ON_SUCCESS: | |
1658 | return s->result == SERVICE_SUCCESS; | |
1659 | ||
1660 | case SERVICE_RESTART_ON_FAILURE: | |
1661 | return s->result != SERVICE_SUCCESS; | |
1662 | ||
1663 | case SERVICE_RESTART_ON_ABNORMAL: | |
1664 | return !IN_SET(s->result, SERVICE_SUCCESS, SERVICE_FAILURE_EXIT_CODE); | |
1665 | ||
1666 | case SERVICE_RESTART_ON_WATCHDOG: | |
1667 | return s->result == SERVICE_FAILURE_WATCHDOG; | |
1668 | ||
1669 | case SERVICE_RESTART_ON_ABORT: | |
1670 | return IN_SET(s->result, SERVICE_FAILURE_SIGNAL, SERVICE_FAILURE_CORE_DUMP); | |
1671 | ||
1672 | default: | |
1673 | assert_not_reached("unknown restart setting"); | |
1674 | } | |
1675 | } | |
1676 | ||
deb4e708 MK |
1677 | static bool service_will_restart(Unit *u) { |
1678 | Service *s = SERVICE(u); | |
1679 | ||
53f47dfc YW |
1680 | assert(s); |
1681 | ||
deb4e708 MK |
1682 | if (s->will_auto_restart) |
1683 | return true; | |
53f47dfc YW |
1684 | if (s->state == SERVICE_AUTO_RESTART) |
1685 | return true; | |
1686 | if (!UNIT(s)->job) | |
1687 | return false; | |
1688 | if (UNIT(s)->job->type == JOB_START) | |
1689 | return true; | |
2ad2e41a | 1690 | |
53f47dfc YW |
1691 | return false; |
1692 | } | |
1693 | ||
f42806df | 1694 | static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) { |
034c6ed7 | 1695 | int r; |
0f52f8e5 | 1696 | |
034c6ed7 LP |
1697 | assert(s); |
1698 | ||
0f52f8e5 LP |
1699 | /* If there's a stop job queued before we enter the DEAD state, we shouldn't act on Restart=, in order to not |
1700 | * undo what has already been enqueued. */ | |
1701 | if (unit_stop_pending(UNIT(s))) | |
1702 | allow_restart = false; | |
1703 | ||
a0fef983 | 1704 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1705 | s->result = f; |
034c6ed7 | 1706 | |
aac99f30 | 1707 | unit_log_result(UNIT(s), s->result == SERVICE_SUCCESS, service_result_to_string(s->result)); |
ed77d407 | 1708 | |
deb4e708 MK |
1709 | if (allow_restart && service_shall_restart(s)) |
1710 | s->will_auto_restart = true; | |
1711 | ||
7eb2a8a1 LP |
1712 | /* Make sure service_release_resources() doesn't destroy our FD store, while we are changing through |
1713 | * SERVICE_FAILED/SERVICE_DEAD before entering into SERVICE_AUTO_RESTART. */ | |
1714 | s->n_keep_fd_store ++; | |
1715 | ||
0c7f15b3 MS |
1716 | service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD); |
1717 | ||
deb4e708 MK |
1718 | if (s->will_auto_restart) { |
1719 | s->will_auto_restart = false; | |
034c6ed7 | 1720 | |
36c16a7c | 1721 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->restart_usec)); |
7eb2a8a1 LP |
1722 | if (r < 0) { |
1723 | s->n_keep_fd_store--; | |
034c6ed7 | 1724 | goto fail; |
7eb2a8a1 | 1725 | } |
034c6ed7 LP |
1726 | |
1727 | service_set_state(s, SERVICE_AUTO_RESTART); | |
7a0019d3 LP |
1728 | } else |
1729 | /* If we shan't restart, then flush out the restart counter. But don't do that immediately, so that the | |
1730 | * user can still introspect the counter. Do so on the next start. */ | |
1731 | s->flush_n_restarts = true; | |
034c6ed7 | 1732 | |
7eb2a8a1 LP |
1733 | /* The new state is in effect, let's decrease the fd store ref counter again. Let's also readd us to the GC |
1734 | * queue, so that the fd store is possibly gc'ed again */ | |
1735 | s->n_keep_fd_store--; | |
1736 | unit_add_to_gc_queue(UNIT(s)); | |
1737 | ||
f2341e0a | 1738 | /* The next restart might not be a manual stop, hence reset the flag indicating manual stops */ |
47342320 LP |
1739 | s->forbid_restart = false; |
1740 | ||
e66cf1a3 | 1741 | /* We want fresh tmpdirs in case service is started again immediately */ |
e8a565cb | 1742 | s->exec_runtime = exec_runtime_unref(s->exec_runtime, true); |
c17ec25e | 1743 | |
53f47dfc | 1744 | if (s->exec_context.runtime_directory_preserve_mode == EXEC_PRESERVE_NO || |
deb4e708 | 1745 | (s->exec_context.runtime_directory_preserve_mode == EXEC_PRESERVE_RESTART && !service_will_restart(UNIT(s)))) |
53f47dfc | 1746 | /* Also, remove the runtime directory */ |
3536f49e | 1747 | exec_context_destroy_runtime_directory(&s->exec_context, UNIT(s)->manager->prefix[EXEC_DIRECTORY_RUNTIME]); |
e66cf1a3 | 1748 | |
00d9ef85 LP |
1749 | /* Get rid of the IPC bits of the user */ |
1750 | unit_unref_uid_gid(UNIT(s), true); | |
1751 | ||
29206d46 LP |
1752 | /* Release the user, and destroy it if we are the only remaining owner */ |
1753 | dynamic_creds_destroy(&s->dynamic_creds); | |
1754 | ||
9285c9ff LN |
1755 | /* Try to delete the pid file. At this point it will be |
1756 | * out-of-date, and some software might be confused by it, so | |
1757 | * let's remove it. */ | |
1758 | if (s->pid_file) | |
fabab190 | 1759 | (void) unlink(s->pid_file); |
9285c9ff | 1760 | |
034c6ed7 LP |
1761 | return; |
1762 | ||
1763 | fail: | |
f2341e0a | 1764 | log_unit_warning_errno(UNIT(s), r, "Failed to run install restart timer: %m"); |
f42806df | 1765 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); |
034c6ed7 LP |
1766 | } |
1767 | ||
f42806df | 1768 | static void service_enter_stop_post(Service *s, ServiceResult f) { |
034c6ed7 LP |
1769 | int r; |
1770 | assert(s); | |
1771 | ||
a0fef983 | 1772 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1773 | s->result = f; |
034c6ed7 | 1774 | |
5e94833f | 1775 | service_unwatch_control_pid(s); |
50be4f4a | 1776 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
5e94833f | 1777 | |
117dcc57 ZJS |
1778 | s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST]; |
1779 | if (s->control_command) { | |
867b3b7d LP |
1780 | s->control_command_id = SERVICE_EXEC_STOP_POST; |
1781 | ||
ecedd90f LP |
1782 | r = service_spawn(s, |
1783 | s->control_command, | |
21b2ce39 | 1784 | s->timeout_stop_usec, |
78f93209 | 1785 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_IS_CONTROL|EXEC_SETENV_RESULT|EXEC_CONTROL_CGROUP, |
ecedd90f LP |
1786 | &s->control_pid); |
1787 | if (r < 0) | |
034c6ed7 LP |
1788 | goto fail; |
1789 | ||
80876c20 LP |
1790 | service_set_state(s, SERVICE_STOP_POST); |
1791 | } else | |
ac84d1fb | 1792 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
1793 | |
1794 | return; | |
1795 | ||
1796 | fail: | |
f2341e0a | 1797 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop-post' task: %m"); |
f42806df | 1798 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1799 | } |
1800 | ||
4940c0b0 LP |
1801 | static int state_to_kill_operation(ServiceState state) { |
1802 | switch (state) { | |
1803 | ||
c87700a1 AZ |
1804 | case SERVICE_STOP_WATCHDOG: |
1805 | return KILL_WATCHDOG; | |
4940c0b0 LP |
1806 | |
1807 | case SERVICE_STOP_SIGTERM: | |
1808 | case SERVICE_FINAL_SIGTERM: | |
1809 | return KILL_TERMINATE; | |
1810 | ||
1811 | case SERVICE_STOP_SIGKILL: | |
1812 | case SERVICE_FINAL_SIGKILL: | |
1813 | return KILL_KILL; | |
1814 | ||
1815 | default: | |
1816 | return _KILL_OPERATION_INVALID; | |
1817 | } | |
1818 | } | |
1819 | ||
f42806df | 1820 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) { |
034c6ed7 | 1821 | int r; |
034c6ed7 LP |
1822 | |
1823 | assert(s); | |
1824 | ||
a0fef983 | 1825 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1826 | s->result = f; |
034c6ed7 | 1827 | |
50be4f4a LP |
1828 | /* Before sending any signal, make sure we track all members of this cgroup */ |
1829 | (void) unit_watch_all_pids(UNIT(s)); | |
1830 | ||
1831 | /* Also, enqueue a job that we recheck all our PIDs a bit later, given that it's likely some processes have | |
1832 | * died now */ | |
1833 | (void) unit_enqueue_rewatch_pids(UNIT(s)); | |
a911bb9a | 1834 | |
cd2086fe LP |
1835 | r = unit_kill_context( |
1836 | UNIT(s), | |
1837 | &s->kill_context, | |
4940c0b0 | 1838 | state_to_kill_operation(state), |
cd2086fe LP |
1839 | s->main_pid, |
1840 | s->control_pid, | |
1841 | s->main_pid_alien); | |
1842 | if (r < 0) | |
1843 | goto fail; | |
034c6ed7 | 1844 | |
cd2086fe | 1845 | if (r > 0) { |
36c16a7c LP |
1846 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_stop_usec)); |
1847 | if (r < 0) | |
1848 | goto fail; | |
d6ea93e3 | 1849 | |
80876c20 | 1850 | service_set_state(s, state); |
c87700a1 | 1851 | } else if (IN_SET(state, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM) && s->kill_context.send_sigkill) |
ac84d1fb | 1852 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_SUCCESS); |
c87700a1 | 1853 | else if (IN_SET(state, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 1854 | service_enter_stop_post(s, SERVICE_SUCCESS); |
1db0db4b | 1855 | else if (state == SERVICE_FINAL_SIGTERM && s->kill_context.send_sigkill) |
ac84d1fb | 1856 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_SUCCESS); |
80876c20 | 1857 | else |
f42806df | 1858 | service_enter_dead(s, SERVICE_SUCCESS, true); |
034c6ed7 LP |
1859 | |
1860 | return; | |
1861 | ||
1862 | fail: | |
f2341e0a | 1863 | log_unit_warning_errno(UNIT(s), r, "Failed to kill processes: %m"); |
034c6ed7 | 1864 | |
c87700a1 | 1865 | if (IN_SET(state, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 1866 | service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES); |
034c6ed7 | 1867 | else |
f42806df | 1868 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
034c6ed7 LP |
1869 | } |
1870 | ||
308d72dc LP |
1871 | static void service_enter_stop_by_notify(Service *s) { |
1872 | assert(s); | |
1873 | ||
50be4f4a | 1874 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
308d72dc | 1875 | |
36c16a7c | 1876 | service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_stop_usec)); |
308d72dc | 1877 | |
6041a7ee MS |
1878 | /* The service told us it's stopping, so it's as if we SIGTERM'd it. */ |
1879 | service_set_state(s, SERVICE_STOP_SIGTERM); | |
308d72dc LP |
1880 | } |
1881 | ||
f42806df | 1882 | static void service_enter_stop(Service *s, ServiceResult f) { |
034c6ed7 | 1883 | int r; |
5925dd3c | 1884 | |
034c6ed7 LP |
1885 | assert(s); |
1886 | ||
a0fef983 | 1887 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1888 | s->result = f; |
034c6ed7 | 1889 | |
5e94833f | 1890 | service_unwatch_control_pid(s); |
50be4f4a | 1891 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
5e94833f | 1892 | |
117dcc57 ZJS |
1893 | s->control_command = s->exec_command[SERVICE_EXEC_STOP]; |
1894 | if (s->control_command) { | |
867b3b7d LP |
1895 | s->control_command_id = SERVICE_EXEC_STOP; |
1896 | ||
ecedd90f LP |
1897 | r = service_spawn(s, |
1898 | s->control_command, | |
21b2ce39 | 1899 | s->timeout_stop_usec, |
78f93209 | 1900 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_SETENV_RESULT|EXEC_CONTROL_CGROUP, |
ecedd90f LP |
1901 | &s->control_pid); |
1902 | if (r < 0) | |
034c6ed7 LP |
1903 | goto fail; |
1904 | ||
80876c20 LP |
1905 | service_set_state(s, SERVICE_STOP); |
1906 | } else | |
f42806df | 1907 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
1908 | |
1909 | return; | |
1910 | ||
1911 | fail: | |
f2341e0a | 1912 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop' task: %m"); |
f42806df | 1913 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1914 | } |
1915 | ||
957c3cf9 LP |
1916 | static bool service_good(Service *s) { |
1917 | int main_pid_ok; | |
1918 | assert(s); | |
1919 | ||
1920 | if (s->type == SERVICE_DBUS && !s->bus_name_good) | |
1921 | return false; | |
1922 | ||
1923 | main_pid_ok = main_pid_good(s); | |
1924 | if (main_pid_ok > 0) /* It's alive */ | |
1925 | return true; | |
1926 | if (main_pid_ok == 0) /* It's dead */ | |
1927 | return false; | |
1928 | ||
1929 | /* OK, we don't know anything about the main PID, maybe | |
1930 | * because there is none. Let's check the control group | |
1931 | * instead. */ | |
1932 | ||
1933 | return cgroup_good(s) != 0; | |
1934 | } | |
1935 | ||
f42806df | 1936 | static void service_enter_running(Service *s, ServiceResult f) { |
80876c20 LP |
1937 | assert(s); |
1938 | ||
a0fef983 | 1939 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1940 | s->result = f; |
80876c20 | 1941 | |
089b64d5 LP |
1942 | service_unwatch_control_pid(s); |
1943 | ||
ec5b1452 LP |
1944 | if (s->result != SERVICE_SUCCESS) |
1945 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); | |
1946 | else if (service_good(s)) { | |
308d72dc | 1947 | |
ec5b1452 | 1948 | /* If there are any queued up sd_notify() notifications, process them now */ |
308d72dc LP |
1949 | if (s->notify_state == NOTIFY_RELOADING) |
1950 | service_enter_reload_by_notify(s); | |
1951 | else if (s->notify_state == NOTIFY_STOPPING) | |
1952 | service_enter_stop_by_notify(s); | |
36c16a7c | 1953 | else { |
308d72dc | 1954 | service_set_state(s, SERVICE_RUNNING); |
36c16a7c LP |
1955 | service_arm_timer(s, usec_add(UNIT(s)->active_enter_timestamp.monotonic, s->runtime_max_usec)); |
1956 | } | |
308d72dc | 1957 | |
ec5b1452 | 1958 | } else if (s->remain_after_exit) |
80876c20 LP |
1959 | service_set_state(s, SERVICE_EXITED); |
1960 | else | |
f42806df | 1961 | service_enter_stop(s, SERVICE_SUCCESS); |
80876c20 LP |
1962 | } |
1963 | ||
034c6ed7 LP |
1964 | static void service_enter_start_post(Service *s) { |
1965 | int r; | |
1966 | assert(s); | |
1967 | ||
5e94833f | 1968 | service_unwatch_control_pid(s); |
842129f5 | 1969 | service_reset_watchdog(s); |
bb242b7b | 1970 | |
117dcc57 ZJS |
1971 | s->control_command = s->exec_command[SERVICE_EXEC_START_POST]; |
1972 | if (s->control_command) { | |
867b3b7d LP |
1973 | s->control_command_id = SERVICE_EXEC_START_POST; |
1974 | ||
ecedd90f LP |
1975 | r = service_spawn(s, |
1976 | s->control_command, | |
21b2ce39 | 1977 | s->timeout_start_usec, |
78f93209 | 1978 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_CONTROL_CGROUP, |
ecedd90f LP |
1979 | &s->control_pid); |
1980 | if (r < 0) | |
034c6ed7 LP |
1981 | goto fail; |
1982 | ||
80876c20 LP |
1983 | service_set_state(s, SERVICE_START_POST); |
1984 | } else | |
f42806df | 1985 | service_enter_running(s, SERVICE_SUCCESS); |
034c6ed7 LP |
1986 | |
1987 | return; | |
1988 | ||
1989 | fail: | |
f2341e0a | 1990 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-post' task: %m"); |
f42806df | 1991 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1992 | } |
1993 | ||
e9a4f676 | 1994 | static void service_kill_control_process(Service *s) { |
a6951a50 | 1995 | int r; |
4ad49000 | 1996 | |
a6951a50 LP |
1997 | assert(s); |
1998 | ||
e9a4f676 LP |
1999 | if (s->control_pid <= 0) |
2000 | return; | |
4ad49000 | 2001 | |
e9a4f676 LP |
2002 | r = kill_and_sigcont(s->control_pid, SIGKILL); |
2003 | if (r < 0) { | |
2004 | _cleanup_free_ char *comm = NULL; | |
a6951a50 | 2005 | |
e9a4f676 | 2006 | (void) get_process_comm(s->control_pid, &comm); |
a6951a50 | 2007 | |
e9a4f676 LP |
2008 | log_unit_debug_errno(UNIT(s), r, "Failed to kill control process " PID_FMT " (%s), ignoring: %m", |
2009 | s->control_pid, strna(comm)); | |
a6951a50 | 2010 | } |
4ad49000 LP |
2011 | } |
2012 | ||
c53d2d54 DB |
2013 | static int service_adverse_to_leftover_processes(Service *s) { |
2014 | assert(s); | |
2015 | ||
2016 | /* KillMode=mixed and control group are used to indicate that all process should be killed off. | |
2017 | * SendSIGKILL is used for services that require a clean shutdown. These are typically database | |
2018 | * service where a SigKilled process would result in a lengthy recovery and who's shutdown or | |
2019 | * startup time is quite variable (so Timeout settings aren't of use). | |
2020 | * | |
2021 | * Here we take these two factors and refuse to start a service if there are existing processes | |
2022 | * within a control group. Databases, while generally having some protection against multiple | |
2023 | * instances running, lets not stress the rigor of these. Also ExecStartPre parts of the service | |
2024 | * aren't as rigoriously written to protect aganst against multiple use. */ | |
2025 | if (unit_warn_leftover_processes(UNIT(s)) && | |
2026 | IN_SET(s->kill_context.kill_mode, KILL_MIXED, KILL_CONTROL_GROUP) && | |
2027 | !s->kill_context.send_sigkill) { | |
2028 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(EBUSY), "Will not start SendSIGKILL=no service of type KillMode=control-group or mixed while processes exist"); | |
2029 | } | |
2030 | return 0; | |
2031 | } | |
2032 | ||
034c6ed7 | 2033 | static void service_enter_start(Service *s) { |
4ad49000 | 2034 | ExecCommand *c; |
36c16a7c | 2035 | usec_t timeout; |
034c6ed7 LP |
2036 | pid_t pid; |
2037 | int r; | |
2038 | ||
2039 | assert(s); | |
2040 | ||
41efeaec LP |
2041 | service_unwatch_control_pid(s); |
2042 | service_unwatch_main_pid(s); | |
80876c20 | 2043 | |
c53d2d54 DB |
2044 | r = service_adverse_to_leftover_processes(s); |
2045 | if (r < 0) | |
2046 | goto fail; | |
a4634b21 | 2047 | |
867b3b7d LP |
2048 | if (s->type == SERVICE_FORKING) { |
2049 | s->control_command_id = SERVICE_EXEC_START; | |
2050 | c = s->control_command = s->exec_command[SERVICE_EXEC_START]; | |
2051 | ||
2052 | s->main_command = NULL; | |
2053 | } else { | |
2054 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
2055 | s->control_command = NULL; | |
2056 | ||
2057 | c = s->main_command = s->exec_command[SERVICE_EXEC_START]; | |
2058 | } | |
34e9ba66 | 2059 | |
96fb8242 | 2060 | if (!c) { |
47fffb35 LP |
2061 | if (s->type != SERVICE_ONESHOT) { |
2062 | /* There's no command line configured for the main command? Hmm, that is strange. This can only | |
2063 | * happen if the configuration changes at runtime. In this case, let's enter a failure | |
2064 | * state. */ | |
b8b846d7 | 2065 | log_unit_error(UNIT(s), "There's no 'start' task anymore we could start."); |
47fffb35 LP |
2066 | r = -ENXIO; |
2067 | goto fail; | |
2068 | } | |
2069 | ||
ef5ae8e7 ZJS |
2070 | /* We force a fake state transition here. Otherwise, the unit would go directly from |
2071 | * SERVICE_DEAD to SERVICE_DEAD without SERVICE_ACTIVATING or SERVICE_ACTIVE | |
2072 | * inbetween. This way we can later trigger actions that depend on the state | |
2073 | * transition, including SuccessAction=. */ | |
2074 | service_set_state(s, SERVICE_START); | |
2075 | ||
96fb8242 LP |
2076 | service_enter_start_post(s); |
2077 | return; | |
2078 | } | |
2079 | ||
36c16a7c LP |
2080 | if (IN_SET(s->type, SERVICE_SIMPLE, SERVICE_IDLE)) |
2081 | /* For simple + idle this is the main process. We don't apply any timeout here, but | |
2082 | * service_enter_running() will later apply the .runtime_max_usec timeout. */ | |
2083 | timeout = USEC_INFINITY; | |
2084 | else | |
2085 | timeout = s->timeout_start_usec; | |
2086 | ||
ecedd90f LP |
2087 | r = service_spawn(s, |
2088 | c, | |
36c16a7c | 2089 | timeout, |
1703fa41 | 2090 | EXEC_PASS_FDS|EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_SET_WATCHDOG, |
ecedd90f LP |
2091 | &pid); |
2092 | if (r < 0) | |
034c6ed7 LP |
2093 | goto fail; |
2094 | ||
36c16a7c | 2095 | if (IN_SET(s->type, SERVICE_SIMPLE, SERVICE_IDLE)) { |
034c6ed7 LP |
2096 | /* For simple services we immediately start |
2097 | * the START_POST binaries. */ | |
2098 | ||
5925dd3c | 2099 | service_set_main_pid(s, pid); |
034c6ed7 LP |
2100 | service_enter_start_post(s); |
2101 | ||
2102 | } else if (s->type == SERVICE_FORKING) { | |
2103 | ||
2104 | /* For forking services we wait until the start | |
2105 | * process exited. */ | |
2106 | ||
e55224ca | 2107 | s->control_pid = pid; |
80876c20 LP |
2108 | service_set_state(s, SERVICE_START); |
2109 | ||
5686391b | 2110 | } else if (IN_SET(s->type, SERVICE_ONESHOT, SERVICE_DBUS, SERVICE_NOTIFY, SERVICE_EXEC)) { |
7d55e835 | 2111 | |
5686391b | 2112 | /* For oneshot services we wait until the start process exited, too, but it is our main process. */ |
7d55e835 | 2113 | |
5686391b LP |
2114 | /* For D-Bus services we know the main pid right away, but wait for the bus name to appear on the |
2115 | * bus. 'notify' and 'exec' services are similar. */ | |
05e343b7 | 2116 | |
5925dd3c | 2117 | service_set_main_pid(s, pid); |
80876c20 | 2118 | service_set_state(s, SERVICE_START); |
034c6ed7 LP |
2119 | } else |
2120 | assert_not_reached("Unknown service type"); | |
2121 | ||
2122 | return; | |
2123 | ||
2124 | fail: | |
f2341e0a | 2125 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start' task: %m"); |
c3fda31d | 2126 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
2127 | } |
2128 | ||
2129 | static void service_enter_start_pre(Service *s) { | |
2130 | int r; | |
2131 | ||
2132 | assert(s); | |
2133 | ||
5e94833f LP |
2134 | service_unwatch_control_pid(s); |
2135 | ||
117dcc57 ZJS |
2136 | s->control_command = s->exec_command[SERVICE_EXEC_START_PRE]; |
2137 | if (s->control_command) { | |
8f53a7b8 | 2138 | |
c53d2d54 DB |
2139 | r = service_adverse_to_leftover_processes(s); |
2140 | if (r < 0) | |
2141 | goto fail; | |
a4634b21 | 2142 | |
867b3b7d LP |
2143 | s->control_command_id = SERVICE_EXEC_START_PRE; |
2144 | ||
ecedd90f LP |
2145 | r = service_spawn(s, |
2146 | s->control_command, | |
21b2ce39 | 2147 | s->timeout_start_usec, |
1703fa41 | 2148 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_APPLY_TTY_STDIN, |
ecedd90f LP |
2149 | &s->control_pid); |
2150 | if (r < 0) | |
034c6ed7 LP |
2151 | goto fail; |
2152 | ||
80876c20 LP |
2153 | service_set_state(s, SERVICE_START_PRE); |
2154 | } else | |
034c6ed7 LP |
2155 | service_enter_start(s); |
2156 | ||
2157 | return; | |
2158 | ||
2159 | fail: | |
f2341e0a | 2160 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-pre' task: %m"); |
f42806df | 2161 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
034c6ed7 LP |
2162 | } |
2163 | ||
2164 | static void service_enter_restart(Service *s) { | |
4afd3348 | 2165 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
034c6ed7 | 2166 | int r; |
398ef8ba | 2167 | |
034c6ed7 LP |
2168 | assert(s); |
2169 | ||
a8bb2e65 LP |
2170 | if (UNIT(s)->job && UNIT(s)->job->type == JOB_STOP) { |
2171 | /* Don't restart things if we are going down anyway */ | |
f2341e0a | 2172 | log_unit_info(UNIT(s), "Stop job pending for unit, delaying automatic restart."); |
2edfa366 | 2173 | |
36c16a7c | 2174 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->restart_usec)); |
a8bb2e65 | 2175 | if (r < 0) |
2edfa366 | 2176 | goto fail; |
feae8adb DW |
2177 | |
2178 | return; | |
2edfa366 LP |
2179 | } |
2180 | ||
48bb5876 DW |
2181 | /* Any units that are bound to this service must also be |
2182 | * restarted. We use JOB_RESTART (instead of the more obvious | |
2183 | * JOB_START) here so that those dependency jobs will be added | |
2184 | * as well. */ | |
03ff2dc7 | 2185 | r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_REPLACE, &error, NULL); |
48bb5876 | 2186 | if (r < 0) |
034c6ed7 LP |
2187 | goto fail; |
2188 | ||
7a0019d3 LP |
2189 | /* Count the jobs we enqueue for restarting. This counter is maintained as long as the unit isn't fully |
2190 | * stopped, i.e. as long as it remains up or remains in auto-start states. The use can reset the counter | |
2191 | * explicitly however via the usual "systemctl reset-failure" logic. */ | |
2192 | s->n_restarts ++; | |
2193 | s->flush_n_restarts = false; | |
2194 | ||
2195 | log_struct(LOG_INFO, | |
2196 | "MESSAGE_ID=" SD_MESSAGE_UNIT_RESTART_SCHEDULED_STR, | |
2197 | LOG_UNIT_ID(UNIT(s)), | |
f1c50bec | 2198 | LOG_UNIT_INVOCATION_ID(UNIT(s)), |
7a0019d3 | 2199 | LOG_UNIT_MESSAGE(UNIT(s), "Scheduled restart job, restart counter is at %u.", s->n_restarts), |
a1230ff9 | 2200 | "N_RESTARTS=%u", s->n_restarts); |
7a0019d3 LP |
2201 | |
2202 | /* Notify clients about changed restart counter */ | |
2203 | unit_add_to_dbus_queue(UNIT(s)); | |
2204 | ||
a8bb2e65 LP |
2205 | /* Note that we stay in the SERVICE_AUTO_RESTART state here, |
2206 | * it will be canceled as part of the service_stop() call that | |
2207 | * is executed as part of JOB_RESTART. */ | |
2208 | ||
034c6ed7 LP |
2209 | return; |
2210 | ||
2211 | fail: | |
f2341e0a | 2212 | log_unit_warning(UNIT(s), "Failed to schedule restart job: %s", bus_error_message(&error, -r)); |
f42806df | 2213 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); |
034c6ed7 LP |
2214 | } |
2215 | ||
308d72dc | 2216 | static void service_enter_reload_by_notify(Service *s) { |
15d167f8 JW |
2217 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
2218 | int r; | |
2219 | ||
308d72dc LP |
2220 | assert(s); |
2221 | ||
36c16a7c | 2222 | service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_start_usec)); |
308d72dc | 2223 | service_set_state(s, SERVICE_RELOAD); |
15d167f8 JW |
2224 | |
2225 | /* service_enter_reload_by_notify is never called during a reload, thus no loops are possible. */ | |
2226 | r = manager_propagate_reload(UNIT(s)->manager, UNIT(s), JOB_FAIL, &error); | |
2227 | if (r < 0) | |
2228 | log_unit_warning(UNIT(s), "Failed to schedule propagation of reload: %s", bus_error_message(&error, -r)); | |
308d72dc LP |
2229 | } |
2230 | ||
034c6ed7 LP |
2231 | static void service_enter_reload(Service *s) { |
2232 | int r; | |
2233 | ||
2234 | assert(s); | |
2235 | ||
5e94833f | 2236 | service_unwatch_control_pid(s); |
95c906ae | 2237 | s->reload_result = SERVICE_SUCCESS; |
5e94833f | 2238 | |
117dcc57 ZJS |
2239 | s->control_command = s->exec_command[SERVICE_EXEC_RELOAD]; |
2240 | if (s->control_command) { | |
867b3b7d LP |
2241 | s->control_command_id = SERVICE_EXEC_RELOAD; |
2242 | ||
ecedd90f LP |
2243 | r = service_spawn(s, |
2244 | s->control_command, | |
21b2ce39 | 2245 | s->timeout_start_usec, |
78f93209 | 2246 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_CONTROL_CGROUP, |
ecedd90f LP |
2247 | &s->control_pid); |
2248 | if (r < 0) | |
034c6ed7 LP |
2249 | goto fail; |
2250 | ||
80876c20 LP |
2251 | service_set_state(s, SERVICE_RELOAD); |
2252 | } else | |
f42806df | 2253 | service_enter_running(s, SERVICE_SUCCESS); |
034c6ed7 LP |
2254 | |
2255 | return; | |
2256 | ||
2257 | fail: | |
f2341e0a | 2258 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'reload' task: %m"); |
f42806df LP |
2259 | s->reload_result = SERVICE_FAILURE_RESOURCES; |
2260 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
2261 | } |
2262 | ||
f42806df | 2263 | static void service_run_next_control(Service *s) { |
36c16a7c | 2264 | usec_t timeout; |
034c6ed7 LP |
2265 | int r; |
2266 | ||
2267 | assert(s); | |
2268 | assert(s->control_command); | |
2269 | assert(s->control_command->command_next); | |
2270 | ||
34e9ba66 | 2271 | assert(s->control_command_id != SERVICE_EXEC_START); |
034c6ed7 | 2272 | |
34e9ba66 | 2273 | s->control_command = s->control_command->command_next; |
5e94833f LP |
2274 | service_unwatch_control_pid(s); |
2275 | ||
36c16a7c LP |
2276 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
2277 | timeout = s->timeout_start_usec; | |
2278 | else | |
2279 | timeout = s->timeout_stop_usec; | |
2280 | ||
ecedd90f LP |
2281 | r = service_spawn(s, |
2282 | s->control_command, | |
36c16a7c | 2283 | timeout, |
1703fa41 | 2284 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL| |
136dc4c4 | 2285 | (IN_SET(s->control_command_id, SERVICE_EXEC_START_PRE, SERVICE_EXEC_STOP_POST) ? EXEC_APPLY_TTY_STDIN : 0)| |
78f93209 LP |
2286 | (IN_SET(s->control_command_id, SERVICE_EXEC_STOP, SERVICE_EXEC_STOP_POST) ? EXEC_SETENV_RESULT : 0)| |
2287 | (IN_SET(s->control_command_id, SERVICE_EXEC_START_POST, SERVICE_EXEC_RELOAD, SERVICE_EXEC_STOP, SERVICE_EXEC_STOP_POST) ? EXEC_CONTROL_CGROUP : 0), | |
ecedd90f LP |
2288 | &s->control_pid); |
2289 | if (r < 0) | |
034c6ed7 LP |
2290 | goto fail; |
2291 | ||
2292 | return; | |
2293 | ||
2294 | fail: | |
f2341e0a | 2295 | log_unit_warning_errno(UNIT(s), r, "Failed to run next control task: %m"); |
034c6ed7 | 2296 | |
4cd9fa81 | 2297 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START_POST, SERVICE_STOP)) |
f42806df | 2298 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 | 2299 | else if (s->state == SERVICE_STOP_POST) |
f42806df | 2300 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
e2f3b44c | 2301 | else if (s->state == SERVICE_RELOAD) { |
f42806df LP |
2302 | s->reload_result = SERVICE_FAILURE_RESOURCES; |
2303 | service_enter_running(s, SERVICE_SUCCESS); | |
e2f3b44c | 2304 | } else |
f42806df | 2305 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
5cb5a6ff LP |
2306 | } |
2307 | ||
f42806df | 2308 | static void service_run_next_main(Service *s) { |
34e9ba66 LP |
2309 | pid_t pid; |
2310 | int r; | |
2311 | ||
2312 | assert(s); | |
867b3b7d LP |
2313 | assert(s->main_command); |
2314 | assert(s->main_command->command_next); | |
2315 | assert(s->type == SERVICE_ONESHOT); | |
34e9ba66 | 2316 | |
867b3b7d | 2317 | s->main_command = s->main_command->command_next; |
34e9ba66 LP |
2318 | service_unwatch_main_pid(s); |
2319 | ||
ecedd90f LP |
2320 | r = service_spawn(s, |
2321 | s->main_command, | |
21b2ce39 | 2322 | s->timeout_start_usec, |
1703fa41 | 2323 | EXEC_PASS_FDS|EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_SET_WATCHDOG, |
ecedd90f LP |
2324 | &pid); |
2325 | if (r < 0) | |
34e9ba66 LP |
2326 | goto fail; |
2327 | ||
2328 | service_set_main_pid(s, pid); | |
2329 | ||
2330 | return; | |
2331 | ||
2332 | fail: | |
f2341e0a | 2333 | log_unit_warning_errno(UNIT(s), r, "Failed to run next main task: %m"); |
f42806df | 2334 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
34e9ba66 LP |
2335 | } |
2336 | ||
87f0e418 LP |
2337 | static int service_start(Unit *u) { |
2338 | Service *s = SERVICE(u); | |
07299350 | 2339 | int r; |
5cb5a6ff LP |
2340 | |
2341 | assert(s); | |
2342 | ||
034c6ed7 LP |
2343 | /* We cannot fulfill this request right now, try again later |
2344 | * please! */ | |
a00973af | 2345 | if (IN_SET(s->state, |
c87700a1 | 2346 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
a00973af | 2347 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) |
5cb5a6ff LP |
2348 | return -EAGAIN; |
2349 | ||
034c6ed7 | 2350 | /* Already on it! */ |
a00973af | 2351 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST)) |
034c6ed7 LP |
2352 | return 0; |
2353 | ||
2e9d6c12 | 2354 | /* A service that will be restarted must be stopped first to |
7f2cddae | 2355 | * trigger BindsTo and/or OnFailure dependencies. If a user |
2e9d6c12 | 2356 | * does not want to wait for the holdoff time to elapse, the |
d4943dc7 LP |
2357 | * service should be manually restarted, not started. We |
2358 | * simply return EAGAIN here, so that any start jobs stay | |
2359 | * queued, and assume that the auto restart timer will | |
2360 | * eventually trigger the restart. */ | |
2361 | if (s->state == SERVICE_AUTO_RESTART) | |
a8bb2e65 | 2362 | return -EAGAIN; |
2e9d6c12 | 2363 | |
a00973af | 2364 | assert(IN_SET(s->state, SERVICE_DEAD, SERVICE_FAILED)); |
5cb5a6ff | 2365 | |
07299350 LP |
2366 | /* Make sure we don't enter a busy loop of some kind. */ |
2367 | r = unit_start_limit_test(u); | |
2368 | if (r < 0) { | |
2369 | service_enter_dead(s, SERVICE_FAILURE_START_LIMIT_HIT, false); | |
2370 | return r; | |
2371 | } | |
2372 | ||
4b58153d LP |
2373 | r = unit_acquire_invocation_id(u); |
2374 | if (r < 0) | |
2375 | return r; | |
2376 | ||
f42806df LP |
2377 | s->result = SERVICE_SUCCESS; |
2378 | s->reload_result = SERVICE_SUCCESS; | |
034c6ed7 | 2379 | s->main_pid_known = false; |
6dfa5494 | 2380 | s->main_pid_alien = false; |
47342320 | 2381 | s->forbid_restart = false; |
3c7416b6 | 2382 | |
a1e58e8e | 2383 | s->status_text = mfree(s->status_text); |
8cfdb077 LP |
2384 | s->status_errno = 0; |
2385 | ||
308d72dc LP |
2386 | s->notify_state = NOTIFY_UNKNOWN; |
2387 | ||
aa8c4bbf | 2388 | s->watchdog_original_usec = s->watchdog_usec; |
2787d83c | 2389 | s->watchdog_override_enable = false; |
aa8c4bbf | 2390 | s->watchdog_override_usec = USEC_INFINITY; |
2787d83c | 2391 | |
6a1d4d9f LP |
2392 | exec_command_reset_status_list_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); |
2393 | exec_status_reset(&s->main_exec_status); | |
2394 | ||
7a0019d3 LP |
2395 | /* This is not an automatic restart? Flush the restart counter then */ |
2396 | if (s->flush_n_restarts) { | |
2397 | s->n_restarts = 0; | |
2398 | s->flush_n_restarts = false; | |
2399 | } | |
2400 | ||
6a1d4d9f LP |
2401 | u->reset_accounting = true; |
2402 | ||
034c6ed7 | 2403 | service_enter_start_pre(s); |
82a2b6bb | 2404 | return 1; |
5cb5a6ff LP |
2405 | } |
2406 | ||
87f0e418 LP |
2407 | static int service_stop(Unit *u) { |
2408 | Service *s = SERVICE(u); | |
5cb5a6ff LP |
2409 | |
2410 | assert(s); | |
2411 | ||
a509f0e6 | 2412 | /* Don't create restart jobs from manual stops. */ |
47342320 | 2413 | s->forbid_restart = true; |
034c6ed7 | 2414 | |
e537352b | 2415 | /* Already on it */ |
a00973af | 2416 | if (IN_SET(s->state, |
c87700a1 | 2417 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
a00973af | 2418 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) |
e537352b LP |
2419 | return 0; |
2420 | ||
f0c7b229 | 2421 | /* A restart will be scheduled or is in progress. */ |
034c6ed7 | 2422 | if (s->state == SERVICE_AUTO_RESTART) { |
0c7f15b3 | 2423 | service_set_state(s, SERVICE_DEAD); |
034c6ed7 LP |
2424 | return 0; |
2425 | } | |
2426 | ||
3f6c78dc LP |
2427 | /* If there's already something running we go directly into |
2428 | * kill mode. */ | |
a00973af | 2429 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RELOAD)) { |
f42806df | 2430 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
3f6c78dc LP |
2431 | return 0; |
2432 | } | |
5cb5a6ff | 2433 | |
a00973af | 2434 | assert(IN_SET(s->state, SERVICE_RUNNING, SERVICE_EXITED)); |
3a762661 | 2435 | |
f42806df | 2436 | service_enter_stop(s, SERVICE_SUCCESS); |
82a2b6bb | 2437 | return 1; |
5cb5a6ff LP |
2438 | } |
2439 | ||
87f0e418 LP |
2440 | static int service_reload(Unit *u) { |
2441 | Service *s = SERVICE(u); | |
034c6ed7 LP |
2442 | |
2443 | assert(s); | |
2444 | ||
3742095b | 2445 | assert(IN_SET(s->state, SERVICE_RUNNING, SERVICE_EXITED)); |
034c6ed7 LP |
2446 | |
2447 | service_enter_reload(s); | |
2d018ae2 | 2448 | return 1; |
5cb5a6ff LP |
2449 | } |
2450 | ||
44a6b1b6 | 2451 | _pure_ static bool service_can_reload(Unit *u) { |
87f0e418 | 2452 | Service *s = SERVICE(u); |
034c6ed7 LP |
2453 | |
2454 | assert(s); | |
2455 | ||
2456 | return !!s->exec_command[SERVICE_EXEC_RELOAD]; | |
2457 | } | |
2458 | ||
e266c068 MS |
2459 | static unsigned service_exec_command_index(Unit *u, ServiceExecCommand id, ExecCommand *current) { |
2460 | Service *s = SERVICE(u); | |
2461 | unsigned idx = 0; | |
2462 | ExecCommand *first, *c; | |
2463 | ||
2464 | assert(s); | |
2465 | ||
2466 | first = s->exec_command[id]; | |
2467 | ||
2468 | /* Figure out where we are in the list by walking back to the beginning */ | |
2469 | for (c = current; c != first; c = c->command_prev) | |
2470 | idx++; | |
2471 | ||
2472 | return idx; | |
2473 | } | |
2474 | ||
2475 | static int service_serialize_exec_command(Unit *u, FILE *f, ExecCommand *command) { | |
d68c645b LP |
2476 | _cleanup_free_ char *args = NULL, *p = NULL; |
2477 | size_t allocated = 0, length = 0; | |
e266c068 | 2478 | Service *s = SERVICE(u); |
d68c645b | 2479 | const char *type, *key; |
e266c068 MS |
2480 | ServiceExecCommand id; |
2481 | unsigned idx; | |
e266c068 | 2482 | char **arg; |
e266c068 MS |
2483 | |
2484 | assert(s); | |
2485 | assert(f); | |
2486 | ||
2487 | if (!command) | |
2488 | return 0; | |
2489 | ||
2490 | if (command == s->control_command) { | |
2491 | type = "control"; | |
2492 | id = s->control_command_id; | |
2493 | } else { | |
2494 | type = "main"; | |
2495 | id = SERVICE_EXEC_START; | |
2496 | } | |
2497 | ||
2498 | idx = service_exec_command_index(u, id, command); | |
2499 | ||
2500 | STRV_FOREACH(arg, command->argv) { | |
e266c068 | 2501 | _cleanup_free_ char *e = NULL; |
d68c645b | 2502 | size_t n; |
e266c068 | 2503 | |
d68c645b | 2504 | e = cescape(*arg); |
e266c068 | 2505 | if (!e) |
d68c645b | 2506 | return log_oom(); |
e266c068 MS |
2507 | |
2508 | n = strlen(e); | |
2509 | if (!GREEDY_REALLOC(args, allocated, length + 1 + n + 1)) | |
d68c645b | 2510 | return log_oom(); |
e266c068 MS |
2511 | |
2512 | if (length > 0) | |
2513 | args[length++] = ' '; | |
2514 | ||
2515 | memcpy(args + length, e, n); | |
2516 | length += n; | |
2517 | } | |
2518 | ||
2519 | if (!GREEDY_REALLOC(args, allocated, length + 1)) | |
d68c645b LP |
2520 | return log_oom(); |
2521 | ||
e266c068 MS |
2522 | args[length++] = 0; |
2523 | ||
d68c645b | 2524 | p = cescape(command->path); |
e266c068 MS |
2525 | if (!p) |
2526 | return -ENOMEM; | |
2527 | ||
d68c645b LP |
2528 | key = strjoina(type, "-command"); |
2529 | return serialize_item_format(f, key, "%s %u %s %s", service_exec_command_to_string(id), idx, p, args); | |
e266c068 MS |
2530 | } |
2531 | ||
a16e1123 LP |
2532 | static int service_serialize(Unit *u, FILE *f, FDSet *fds) { |
2533 | Service *s = SERVICE(u); | |
2339fc93 | 2534 | ServiceFDStore *fs; |
a34ceba6 | 2535 | int r; |
a16e1123 LP |
2536 | |
2537 | assert(u); | |
2538 | assert(f); | |
2539 | assert(fds); | |
2540 | ||
d68c645b LP |
2541 | (void) serialize_item(f, "state", service_state_to_string(s->state)); |
2542 | (void) serialize_item(f, "result", service_result_to_string(s->result)); | |
2543 | (void) serialize_item(f, "reload-result", service_result_to_string(s->reload_result)); | |
a16e1123 LP |
2544 | |
2545 | if (s->control_pid > 0) | |
d68c645b | 2546 | (void) serialize_item_format(f, "control-pid", PID_FMT, s->control_pid); |
a16e1123 | 2547 | |
5925dd3c | 2548 | if (s->main_pid_known && s->main_pid > 0) |
d68c645b | 2549 | (void) serialize_item_format(f, "main-pid", PID_FMT, s->main_pid); |
a16e1123 | 2550 | |
d68c645b LP |
2551 | (void) serialize_bool(f, "main-pid-known", s->main_pid_known); |
2552 | (void) serialize_bool(f, "bus-name-good", s->bus_name_good); | |
2553 | (void) serialize_bool(f, "bus-name-owner", s->bus_name_owner); | |
a16e1123 | 2554 | |
d68c645b LP |
2555 | (void) serialize_item_format(f, "n-restarts", "%u", s->n_restarts); |
2556 | (void) serialize_bool(f, "flush-n-restarts", s->flush_n_restarts); | |
7a0019d3 | 2557 | |
d68c645b | 2558 | r = serialize_item_escaped(f, "status-text", s->status_text); |
a34ceba6 LP |
2559 | if (r < 0) |
2560 | return r; | |
3a2776bc | 2561 | |
e266c068 MS |
2562 | service_serialize_exec_command(u, f, s->control_command); |
2563 | service_serialize_exec_command(u, f, s->main_command); | |
a16e1123 | 2564 | |
d68c645b | 2565 | r = serialize_fd(f, fds, "stdin-fd", s->stdin_fd); |
a34ceba6 LP |
2566 | if (r < 0) |
2567 | return r; | |
d68c645b | 2568 | r = serialize_fd(f, fds, "stdout-fd", s->stdout_fd); |
a34ceba6 LP |
2569 | if (r < 0) |
2570 | return r; | |
d68c645b | 2571 | r = serialize_fd(f, fds, "stderr-fd", s->stderr_fd); |
a34ceba6 LP |
2572 | if (r < 0) |
2573 | return r; | |
e44da745 | 2574 | |
5686391b | 2575 | if (s->exec_fd_event_source) { |
d68c645b | 2576 | r = serialize_fd(f, fds, "exec-fd", sd_event_source_get_io_fd(s->exec_fd_event_source)); |
5686391b LP |
2577 | if (r < 0) |
2578 | return r; | |
d68c645b LP |
2579 | |
2580 | (void) serialize_bool(f, "exec-fd-hot", s->exec_fd_hot); | |
5686391b LP |
2581 | } |
2582 | ||
9dfb64f8 | 2583 | if (UNIT_ISSET(s->accept_socket)) { |
d68c645b | 2584 | r = serialize_item(f, "accept-socket", UNIT_DEREF(s->accept_socket)->id); |
9dfb64f8 ZJS |
2585 | if (r < 0) |
2586 | return r; | |
2587 | } | |
2588 | ||
d68c645b | 2589 | r = serialize_fd(f, fds, "socket-fd", s->socket_fd); |
a34ceba6 LP |
2590 | if (r < 0) |
2591 | return r; | |
e44da745 | 2592 | |
2339fc93 | 2593 | LIST_FOREACH(fd_store, fs, s->fd_store) { |
8dd4c05b | 2594 | _cleanup_free_ char *c = NULL; |
2339fc93 LP |
2595 | int copy; |
2596 | ||
2597 | copy = fdset_put_dup(fds, fs->fd); | |
2598 | if (copy < 0) | |
d68c645b | 2599 | return log_error_errno(copy, "Failed to copy file descriptor for serialization: %m"); |
2339fc93 | 2600 | |
8dd4c05b | 2601 | c = cescape(fs->fdname); |
d68c645b LP |
2602 | if (!c) |
2603 | return log_oom(); | |
8dd4c05b | 2604 | |
d68c645b | 2605 | (void) serialize_item_format(f, "fd-store-fd", "%i %s", copy, c); |
2339fc93 LP |
2606 | } |
2607 | ||
ecdbca40 | 2608 | if (s->main_exec_status.pid > 0) { |
d68c645b LP |
2609 | (void) serialize_item_format(f, "main-exec-status-pid", PID_FMT, s->main_exec_status.pid); |
2610 | (void) serialize_dual_timestamp(f, "main-exec-status-start", &s->main_exec_status.start_timestamp); | |
2611 | (void) serialize_dual_timestamp(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp); | |
ecdbca40 | 2612 | |
799fd0fd | 2613 | if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) { |
d68c645b LP |
2614 | (void) serialize_item_format(f, "main-exec-status-code", "%i", s->main_exec_status.code); |
2615 | (void) serialize_item_format(f, "main-exec-status-status", "%i", s->main_exec_status.status); | |
ecdbca40 LP |
2616 | } |
2617 | } | |
f06db334 | 2618 | |
d68c645b LP |
2619 | (void) serialize_dual_timestamp(f, "watchdog-timestamp", &s->watchdog_timestamp); |
2620 | (void) serialize_bool(f, "forbid-restart", s->forbid_restart); | |
6aca9a58 | 2621 | |
2787d83c | 2622 | if (s->watchdog_override_enable) |
d68c645b | 2623 | (void) serialize_item_format(f, "watchdog-override-usec", USEC_FMT, s->watchdog_override_usec); |
2787d83c | 2624 | |
aa8c4bbf LP |
2625 | if (s->watchdog_original_usec != USEC_INFINITY) |
2626 | (void) serialize_item_format(f, "watchdog-original-usec", USEC_FMT, s->watchdog_original_usec); | |
2627 | ||
a16e1123 LP |
2628 | return 0; |
2629 | } | |
2630 | ||
e266c068 MS |
2631 | static int service_deserialize_exec_command(Unit *u, const char *key, const char *value) { |
2632 | Service *s = SERVICE(u); | |
2633 | int r; | |
2634 | unsigned idx = 0, i; | |
2635 | bool control, found = false; | |
2636 | ServiceExecCommand id = _SERVICE_EXEC_COMMAND_INVALID; | |
2637 | ExecCommand *command = NULL; | |
6eeec374 | 2638 | _cleanup_free_ char *path = NULL; |
e266c068 MS |
2639 | _cleanup_strv_free_ char **argv = NULL; |
2640 | ||
2641 | enum ExecCommandState { | |
2642 | STATE_EXEC_COMMAND_TYPE, | |
2643 | STATE_EXEC_COMMAND_INDEX, | |
2644 | STATE_EXEC_COMMAND_PATH, | |
2645 | STATE_EXEC_COMMAND_ARGS, | |
2646 | _STATE_EXEC_COMMAND_MAX, | |
2647 | _STATE_EXEC_COMMAND_INVALID = -1, | |
2648 | } state; | |
2649 | ||
2650 | assert(s); | |
2651 | assert(key); | |
2652 | assert(value); | |
2653 | ||
2654 | control = streq(key, "control-command"); | |
2655 | ||
2656 | state = STATE_EXEC_COMMAND_TYPE; | |
2657 | ||
2658 | for (;;) { | |
2659 | _cleanup_free_ char *arg = NULL; | |
2660 | ||
2661 | r = extract_first_word(&value, &arg, NULL, EXTRACT_CUNESCAPE); | |
efa3f34e LP |
2662 | if (r < 0) |
2663 | return r; | |
e266c068 MS |
2664 | if (r == 0) |
2665 | break; | |
e266c068 MS |
2666 | |
2667 | switch (state) { | |
2668 | case STATE_EXEC_COMMAND_TYPE: | |
2669 | id = service_exec_command_from_string(arg); | |
2670 | if (id < 0) | |
2671 | return -EINVAL; | |
2672 | ||
2673 | state = STATE_EXEC_COMMAND_INDEX; | |
2674 | break; | |
2675 | case STATE_EXEC_COMMAND_INDEX: | |
2676 | r = safe_atou(arg, &idx); | |
2677 | if (r < 0) | |
2678 | return -EINVAL; | |
2679 | ||
2680 | state = STATE_EXEC_COMMAND_PATH; | |
2681 | break; | |
2682 | case STATE_EXEC_COMMAND_PATH: | |
ae2a15bc | 2683 | path = TAKE_PTR(arg); |
e266c068 MS |
2684 | state = STATE_EXEC_COMMAND_ARGS; |
2685 | ||
2686 | if (!path_is_absolute(path)) | |
2687 | return -EINVAL; | |
2688 | break; | |
2689 | case STATE_EXEC_COMMAND_ARGS: | |
2690 | r = strv_extend(&argv, arg); | |
2691 | if (r < 0) | |
2692 | return -ENOMEM; | |
2693 | break; | |
2694 | default: | |
2695 | assert_not_reached("Unknown error at deserialization of exec command"); | |
2696 | break; | |
2697 | } | |
2698 | } | |
2699 | ||
2700 | if (state != STATE_EXEC_COMMAND_ARGS) | |
2701 | return -EINVAL; | |
2702 | ||
2703 | /* Let's check whether exec command on given offset matches data that we just deserialized */ | |
2704 | for (command = s->exec_command[id], i = 0; command; command = command->command_next, i++) { | |
2705 | if (i != idx) | |
2706 | continue; | |
2707 | ||
2708 | found = strv_equal(argv, command->argv) && streq(command->path, path); | |
2709 | break; | |
2710 | } | |
2711 | ||
2712 | if (!found) { | |
2713 | /* Command at the index we serialized is different, let's look for command that exactly | |
2714 | * matches but is on different index. If there is no such command we will not resume execution. */ | |
2715 | for (command = s->exec_command[id]; command; command = command->command_next) | |
2716 | if (strv_equal(command->argv, argv) && streq(command->path, path)) | |
2717 | break; | |
2718 | } | |
2719 | ||
2720 | if (command && control) | |
2721 | s->control_command = command; | |
2722 | else if (command) | |
2723 | s->main_command = command; | |
2724 | else | |
2725 | log_unit_warning(u, "Current command vanished from the unit file, execution of the command list won't be resumed."); | |
2726 | ||
2727 | return 0; | |
2728 | } | |
2729 | ||
a16e1123 LP |
2730 | static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { |
2731 | Service *s = SERVICE(u); | |
2339fc93 | 2732 | int r; |
a16e1123 LP |
2733 | |
2734 | assert(u); | |
2735 | assert(key); | |
2736 | assert(value); | |
2737 | assert(fds); | |
2738 | ||
2739 | if (streq(key, "state")) { | |
2740 | ServiceState state; | |
2741 | ||
117dcc57 ZJS |
2742 | state = service_state_from_string(value); |
2743 | if (state < 0) | |
f2341e0a | 2744 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
2745 | else |
2746 | s->deserialized_state = state; | |
f42806df LP |
2747 | } else if (streq(key, "result")) { |
2748 | ServiceResult f; | |
2749 | ||
2750 | f = service_result_from_string(value); | |
2751 | if (f < 0) | |
f2341e0a | 2752 | log_unit_debug(u, "Failed to parse result value: %s", value); |
f42806df LP |
2753 | else if (f != SERVICE_SUCCESS) |
2754 | s->result = f; | |
2755 | ||
2756 | } else if (streq(key, "reload-result")) { | |
2757 | ServiceResult f; | |
2758 | ||
2759 | f = service_result_from_string(value); | |
2760 | if (f < 0) | |
f2341e0a | 2761 | log_unit_debug(u, "Failed to parse reload result value: %s", value); |
f42806df LP |
2762 | else if (f != SERVICE_SUCCESS) |
2763 | s->reload_result = f; | |
a16e1123 | 2764 | |
a16e1123 | 2765 | } else if (streq(key, "control-pid")) { |
5925dd3c | 2766 | pid_t pid; |
a16e1123 | 2767 | |
e364ad06 | 2768 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2769 | log_unit_debug(u, "Failed to parse control-pid value: %s", value); |
a16e1123 | 2770 | else |
e55224ca | 2771 | s->control_pid = pid; |
a16e1123 | 2772 | } else if (streq(key, "main-pid")) { |
5925dd3c | 2773 | pid_t pid; |
a16e1123 | 2774 | |
e364ad06 | 2775 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2776 | log_unit_debug(u, "Failed to parse main-pid value: %s", value); |
eabd3e56 LP |
2777 | else |
2778 | (void) service_set_main_pid(s, pid); | |
a16e1123 LP |
2779 | } else if (streq(key, "main-pid-known")) { |
2780 | int b; | |
2781 | ||
117dcc57 ZJS |
2782 | b = parse_boolean(value); |
2783 | if (b < 0) | |
f2341e0a | 2784 | log_unit_debug(u, "Failed to parse main-pid-known value: %s", value); |
a16e1123 LP |
2785 | else |
2786 | s->main_pid_known = b; | |
de1d4f9b WF |
2787 | } else if (streq(key, "bus-name-good")) { |
2788 | int b; | |
2789 | ||
2790 | b = parse_boolean(value); | |
2791 | if (b < 0) | |
2792 | log_unit_debug(u, "Failed to parse bus-name-good value: %s", value); | |
2793 | else | |
2794 | s->bus_name_good = b; | |
d8ccf5fd DM |
2795 | } else if (streq(key, "bus-name-owner")) { |
2796 | r = free_and_strdup(&s->bus_name_owner, value); | |
2797 | if (r < 0) | |
2798 | log_unit_error_errno(u, r, "Unable to deserialize current bus owner %s: %m", value); | |
3a2776bc LP |
2799 | } else if (streq(key, "status-text")) { |
2800 | char *t; | |
2801 | ||
f2341e0a LP |
2802 | r = cunescape(value, 0, &t); |
2803 | if (r < 0) | |
5e1ee764 | 2804 | log_unit_debug_errno(u, r, "Failed to unescape status text '%s': %m", value); |
efa3f34e LP |
2805 | else |
2806 | free_and_replace(s->status_text, t); | |
3a2776bc | 2807 | |
9dfb64f8 ZJS |
2808 | } else if (streq(key, "accept-socket")) { |
2809 | Unit *socket; | |
2810 | ||
2811 | r = manager_load_unit(u->manager, value, NULL, NULL, &socket); | |
2812 | if (r < 0) | |
5e1ee764 | 2813 | log_unit_debug_errno(u, r, "Failed to load accept-socket unit '%s': %m", value); |
9dfb64f8 | 2814 | else { |
7f7d01ed | 2815 | unit_ref_set(&s->accept_socket, u, socket); |
9dfb64f8 ZJS |
2816 | SOCKET(socket)->n_connections++; |
2817 | } | |
2818 | ||
a16e1123 LP |
2819 | } else if (streq(key, "socket-fd")) { |
2820 | int fd; | |
2821 | ||
2822 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 2823 | log_unit_debug(u, "Failed to parse socket-fd value: %s", value); |
a16e1123 | 2824 | else { |
574634bc | 2825 | asynchronous_close(s->socket_fd); |
a16e1123 LP |
2826 | s->socket_fd = fdset_remove(fds, fd); |
2827 | } | |
2339fc93 | 2828 | } else if (streq(key, "fd-store-fd")) { |
8dd4c05b LP |
2829 | const char *fdv; |
2830 | size_t pf; | |
2339fc93 LP |
2831 | int fd; |
2832 | ||
8dd4c05b LP |
2833 | pf = strcspn(value, WHITESPACE); |
2834 | fdv = strndupa(value, pf); | |
2835 | ||
2836 | if (safe_atoi(fdv, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 2837 | log_unit_debug(u, "Failed to parse fd-store-fd value: %s", value); |
2339fc93 | 2838 | else { |
8dd4c05b LP |
2839 | _cleanup_free_ char *t = NULL; |
2840 | const char *fdn; | |
2841 | ||
2842 | fdn = value + pf; | |
2843 | fdn += strspn(fdn, WHITESPACE); | |
2844 | (void) cunescape(fdn, 0, &t); | |
2845 | ||
2846 | r = service_add_fd_store(s, fd, t); | |
2339fc93 | 2847 | if (r < 0) |
f2341e0a | 2848 | log_unit_error_errno(u, r, "Failed to add fd to store: %m"); |
9021ff17 | 2849 | else |
2339fc93 LP |
2850 | fdset_remove(fds, fd); |
2851 | } | |
2852 | ||
ecdbca40 LP |
2853 | } else if (streq(key, "main-exec-status-pid")) { |
2854 | pid_t pid; | |
2855 | ||
e364ad06 | 2856 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2857 | log_unit_debug(u, "Failed to parse main-exec-status-pid value: %s", value); |
ecdbca40 LP |
2858 | else |
2859 | s->main_exec_status.pid = pid; | |
2860 | } else if (streq(key, "main-exec-status-code")) { | |
2861 | int i; | |
2862 | ||
e364ad06 | 2863 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 2864 | log_unit_debug(u, "Failed to parse main-exec-status-code value: %s", value); |
ecdbca40 LP |
2865 | else |
2866 | s->main_exec_status.code = i; | |
2867 | } else if (streq(key, "main-exec-status-status")) { | |
2868 | int i; | |
2869 | ||
e364ad06 | 2870 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 2871 | log_unit_debug(u, "Failed to parse main-exec-status-status value: %s", value); |
ecdbca40 LP |
2872 | else |
2873 | s->main_exec_status.status = i; | |
799fd0fd | 2874 | } else if (streq(key, "main-exec-status-start")) |
d68c645b | 2875 | deserialize_dual_timestamp(value, &s->main_exec_status.start_timestamp); |
799fd0fd | 2876 | else if (streq(key, "main-exec-status-exit")) |
d68c645b | 2877 | deserialize_dual_timestamp(value, &s->main_exec_status.exit_timestamp); |
a6927d7f | 2878 | else if (streq(key, "watchdog-timestamp")) |
d68c645b | 2879 | deserialize_dual_timestamp(value, &s->watchdog_timestamp); |
613b411c | 2880 | else if (streq(key, "forbid-restart")) { |
6aca9a58 SE |
2881 | int b; |
2882 | ||
2883 | b = parse_boolean(value); | |
2884 | if (b < 0) | |
f2341e0a | 2885 | log_unit_debug(u, "Failed to parse forbid-restart value: %s", value); |
6aca9a58 SE |
2886 | else |
2887 | s->forbid_restart = b; | |
a34ceba6 LP |
2888 | } else if (streq(key, "stdin-fd")) { |
2889 | int fd; | |
2890 | ||
2891 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2892 | log_unit_debug(u, "Failed to parse stdin-fd value: %s", value); | |
2893 | else { | |
2894 | asynchronous_close(s->stdin_fd); | |
2895 | s->stdin_fd = fdset_remove(fds, fd); | |
1e22b5cd | 2896 | s->exec_context.stdio_as_fds = true; |
a34ceba6 LP |
2897 | } |
2898 | } else if (streq(key, "stdout-fd")) { | |
2899 | int fd; | |
2900 | ||
2901 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2902 | log_unit_debug(u, "Failed to parse stdout-fd value: %s", value); | |
2903 | else { | |
2904 | asynchronous_close(s->stdout_fd); | |
2905 | s->stdout_fd = fdset_remove(fds, fd); | |
1e22b5cd | 2906 | s->exec_context.stdio_as_fds = true; |
a34ceba6 LP |
2907 | } |
2908 | } else if (streq(key, "stderr-fd")) { | |
2909 | int fd; | |
2910 | ||
2911 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2912 | log_unit_debug(u, "Failed to parse stderr-fd value: %s", value); | |
2913 | else { | |
2914 | asynchronous_close(s->stderr_fd); | |
2915 | s->stderr_fd = fdset_remove(fds, fd); | |
1e22b5cd | 2916 | s->exec_context.stdio_as_fds = true; |
a34ceba6 | 2917 | } |
5686391b LP |
2918 | } else if (streq(key, "exec-fd")) { |
2919 | int fd; | |
2920 | ||
2921 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2922 | log_unit_debug(u, "Failed to parse exec-fd value: %s", value); | |
2923 | else { | |
2924 | s->exec_fd_event_source = sd_event_source_unref(s->exec_fd_event_source); | |
2925 | ||
2926 | fd = fdset_remove(fds, fd); | |
2927 | if (service_allocate_exec_fd_event_source(s, fd, &s->exec_fd_event_source) < 0) | |
2928 | safe_close(fd); | |
2929 | } | |
2787d83c | 2930 | } else if (streq(key, "watchdog-override-usec")) { |
d68c645b | 2931 | if (deserialize_usec(value, &s->watchdog_override_usec) < 0) |
2787d83c | 2932 | log_unit_debug(u, "Failed to parse watchdog_override_usec value: %s", value); |
d68c645b | 2933 | else |
2787d83c | 2934 | s->watchdog_override_enable = true; |
d68c645b | 2935 | |
aa8c4bbf LP |
2936 | } else if (streq(key, "watchdog-original-usec")) { |
2937 | if (deserialize_usec(value, &s->watchdog_original_usec) < 0) | |
2938 | log_unit_debug(u, "Failed to parse watchdog_original_usec value: %s", value); | |
2939 | ||
e266c068 MS |
2940 | } else if (STR_IN_SET(key, "main-command", "control-command")) { |
2941 | r = service_deserialize_exec_command(u, key, value); | |
2942 | if (r < 0) | |
2943 | log_unit_debug_errno(u, r, "Failed to parse serialized command \"%s\": %m", value); | |
7a0019d3 LP |
2944 | |
2945 | } else if (streq(key, "n-restarts")) { | |
2946 | r = safe_atou(value, &s->n_restarts); | |
2947 | if (r < 0) | |
2948 | log_unit_debug_errno(u, r, "Failed to parse serialized restart counter '%s': %m", value); | |
2949 | ||
2950 | } else if (streq(key, "flush-n-restarts")) { | |
2951 | r = parse_boolean(value); | |
2952 | if (r < 0) | |
2953 | log_unit_debug_errno(u, r, "Failed to parse serialized flush restart counter setting '%s': %m", value); | |
2954 | else | |
2955 | s->flush_n_restarts = r; | |
c17ec25e | 2956 | } else |
f2341e0a | 2957 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
2958 | |
2959 | return 0; | |
2960 | } | |
2961 | ||
44a6b1b6 | 2962 | _pure_ static UnitActiveState service_active_state(Unit *u) { |
e056b01d LP |
2963 | const UnitActiveState *table; |
2964 | ||
87f0e418 | 2965 | assert(u); |
5cb5a6ff | 2966 | |
e056b01d LP |
2967 | table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
2968 | ||
2969 | return table[SERVICE(u)->state]; | |
034c6ed7 LP |
2970 | } |
2971 | ||
10a94420 LP |
2972 | static const char *service_sub_state_to_string(Unit *u) { |
2973 | assert(u); | |
2974 | ||
2975 | return service_state_to_string(SERVICE(u)->state); | |
2976 | } | |
2977 | ||
f2f725e5 | 2978 | static bool service_may_gc(Unit *u) { |
701cc384 LP |
2979 | Service *s = SERVICE(u); |
2980 | ||
2981 | assert(s); | |
2982 | ||
e98b2fbb | 2983 | /* Never clean up services that still have a process around, even if the service is formally dead. Note that |
f2f725e5 | 2984 | * unit_may_gc() already checked our cgroup for us, we just check our two additional PIDs, too, in case they |
e98b2fbb LP |
2985 | * have moved outside of the cgroup. */ |
2986 | ||
2987 | if (main_pid_good(s) > 0 || | |
6d55002a | 2988 | control_pid_good(s) > 0) |
f2f725e5 | 2989 | return false; |
6d55002a | 2990 | |
f2f725e5 | 2991 | return true; |
6d55002a LP |
2992 | } |
2993 | ||
3a111838 MS |
2994 | static int service_retry_pid_file(Service *s) { |
2995 | int r; | |
2996 | ||
2997 | assert(s->pid_file); | |
3742095b | 2998 | assert(IN_SET(s->state, SERVICE_START, SERVICE_START_POST)); |
3a111838 MS |
2999 | |
3000 | r = service_load_pid_file(s, false); | |
3001 | if (r < 0) | |
3002 | return r; | |
3003 | ||
3004 | service_unwatch_pid_file(s); | |
3005 | ||
f42806df | 3006 | service_enter_running(s, SERVICE_SUCCESS); |
3a111838 MS |
3007 | return 0; |
3008 | } | |
3009 | ||
3010 | static int service_watch_pid_file(Service *s) { | |
3011 | int r; | |
3012 | ||
f2341e0a | 3013 | log_unit_debug(UNIT(s), "Setting watch for PID file %s", s->pid_file_pathspec->path); |
8bb2d17d | 3014 | |
5686391b | 3015 | r = path_spec_watch(s->pid_file_pathspec, service_dispatch_inotify_io); |
3a111838 MS |
3016 | if (r < 0) |
3017 | goto fail; | |
3018 | ||
3019 | /* the pidfile might have appeared just before we set the watch */ | |
f2341e0a | 3020 | log_unit_debug(UNIT(s), "Trying to read PID file %s in case it changed", s->pid_file_pathspec->path); |
3a111838 MS |
3021 | service_retry_pid_file(s); |
3022 | ||
3023 | return 0; | |
3024 | fail: | |
f2341e0a | 3025 | log_unit_error_errno(UNIT(s), r, "Failed to set a watch for PID file %s: %m", s->pid_file_pathspec->path); |
3a111838 MS |
3026 | service_unwatch_pid_file(s); |
3027 | return r; | |
3028 | } | |
3029 | ||
3030 | static int service_demand_pid_file(Service *s) { | |
3031 | PathSpec *ps; | |
3032 | ||
3033 | assert(s->pid_file); | |
3034 | assert(!s->pid_file_pathspec); | |
3035 | ||
3036 | ps = new0(PathSpec, 1); | |
3037 | if (!ps) | |
3038 | return -ENOMEM; | |
3039 | ||
718db961 | 3040 | ps->unit = UNIT(s); |
3a111838 MS |
3041 | ps->path = strdup(s->pid_file); |
3042 | if (!ps->path) { | |
3043 | free(ps); | |
3044 | return -ENOMEM; | |
3045 | } | |
3046 | ||
858d36c1 | 3047 | path_simplify(ps->path, false); |
3a111838 MS |
3048 | |
3049 | /* PATH_CHANGED would not be enough. There are daemons (sendmail) that | |
3050 | * keep their PID file open all the time. */ | |
3051 | ps->type = PATH_MODIFIED; | |
3052 | ps->inotify_fd = -1; | |
3053 | ||
3054 | s->pid_file_pathspec = ps; | |
3055 | ||
3056 | return service_watch_pid_file(s); | |
3057 | } | |
3058 | ||
5686391b | 3059 | static int service_dispatch_inotify_io(sd_event_source *source, int fd, uint32_t events, void *userdata) { |
e14c2802 LP |
3060 | PathSpec *p = userdata; |
3061 | Service *s; | |
3062 | ||
3063 | assert(p); | |
3064 | ||
3065 | s = SERVICE(p->unit); | |
3a111838 MS |
3066 | |
3067 | assert(s); | |
3068 | assert(fd >= 0); | |
3742095b | 3069 | assert(IN_SET(s->state, SERVICE_START, SERVICE_START_POST)); |
3a111838 | 3070 | assert(s->pid_file_pathspec); |
57020a3a | 3071 | assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd)); |
3a111838 | 3072 | |
f2341e0a | 3073 | log_unit_debug(UNIT(s), "inotify event"); |
3a111838 | 3074 | |
e14c2802 | 3075 | if (path_spec_fd_event(p, events) < 0) |
3a111838 MS |
3076 | goto fail; |
3077 | ||
3078 | if (service_retry_pid_file(s) == 0) | |
718db961 | 3079 | return 0; |
3a111838 MS |
3080 | |
3081 | if (service_watch_pid_file(s) < 0) | |
3082 | goto fail; | |
3083 | ||
718db961 LP |
3084 | return 0; |
3085 | ||
3a111838 MS |
3086 | fail: |
3087 | service_unwatch_pid_file(s); | |
f42806df | 3088 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
718db961 | 3089 | return 0; |
3a111838 MS |
3090 | } |
3091 | ||
5686391b LP |
3092 | static int service_dispatch_exec_io(sd_event_source *source, int fd, uint32_t events, void *userdata) { |
3093 | Service *s = SERVICE(userdata); | |
3094 | ||
3095 | assert(s); | |
3096 | ||
3097 | log_unit_debug(UNIT(s), "got exec-fd event"); | |
3098 | ||
3099 | /* If Type=exec is set, we'll consider a service started successfully the instant we invoked execve() | |
3100 | * successfully for it. We implement this through a pipe() towards the child, which the kernel automatically | |
3101 | * closes for us due to O_CLOEXEC on execve() in the child, which then triggers EOF on the pipe in the | |
3102 | * parent. We need to be careful however, as there are other reasons that we might cause the child's side of | |
3103 | * the pipe to be closed (for example, a simple exit()). To deal with that we'll ignore EOFs on the pipe unless | |
3104 | * the child signalled us first that it is about to call the execve(). It does so by sending us a simple | |
3105 | * non-zero byte via the pipe. We also provide the child with a way to inform us in case execve() failed: if it | |
3106 | * sends a zero byte we'll ignore POLLHUP on the fd again. */ | |
3107 | ||
3108 | for (;;) { | |
3109 | uint8_t x; | |
3110 | ssize_t n; | |
3111 | ||
3112 | n = read(fd, &x, sizeof(x)); | |
3113 | if (n < 0) { | |
3114 | if (errno == EAGAIN) /* O_NONBLOCK in effect → everything queued has now been processed. */ | |
3115 | return 0; | |
3116 | ||
3117 | return log_unit_error_errno(UNIT(s), errno, "Failed to read from exec_fd: %m"); | |
3118 | } | |
3119 | if (n == 0) { /* EOF → the event we are waiting for */ | |
3120 | ||
3121 | s->exec_fd_event_source = sd_event_source_unref(s->exec_fd_event_source); | |
3122 | ||
3123 | if (s->exec_fd_hot) { /* Did the child tell us to expect EOF now? */ | |
3124 | log_unit_debug(UNIT(s), "Got EOF on exec-fd"); | |
3125 | ||
3126 | s->exec_fd_hot = false; | |
3127 | ||
3128 | /* Nice! This is what we have been waiting for. Transition to next state. */ | |
3129 | if (s->type == SERVICE_EXEC && s->state == SERVICE_START) | |
3130 | service_enter_start_post(s); | |
3131 | } else | |
3132 | log_unit_debug(UNIT(s), "Got EOF on exec-fd while it was disabled, ignoring."); | |
3133 | ||
3134 | return 0; | |
3135 | } | |
3136 | ||
3137 | /* A byte was read → this turns on/off the exec fd logic */ | |
3138 | assert(n == sizeof(x)); | |
3139 | s->exec_fd_hot = x; | |
3140 | } | |
3141 | ||
3142 | return 0; | |
3143 | } | |
3144 | ||
a911bb9a LP |
3145 | static void service_notify_cgroup_empty_event(Unit *u) { |
3146 | Service *s = SERVICE(u); | |
3147 | ||
3148 | assert(u); | |
3149 | ||
f2341e0a | 3150 | log_unit_debug(u, "cgroup is empty"); |
a911bb9a LP |
3151 | |
3152 | switch (s->state) { | |
3153 | ||
3154 | /* Waiting for SIGCHLD is usually more interesting, | |
3155 | * because it includes return codes/signals. Which is | |
3156 | * why we ignore the cgroup events for most cases, | |
3157 | * except when we don't know pid which to expect the | |
3158 | * SIGCHLD for. */ | |
3159 | ||
3160 | case SERVICE_START: | |
3c751b1b LP |
3161 | if (s->type == SERVICE_NOTIFY && |
3162 | main_pid_good(s) == 0 && | |
3163 | control_pid_good(s) == 0) { | |
3d474ef7 | 3164 | /* No chance of getting a ready notification anymore */ |
c3fda31d | 3165 | service_enter_stop_post(s, SERVICE_FAILURE_PROTOCOL); |
71e529fc JW |
3166 | break; |
3167 | } | |
3168 | ||
4831981d | 3169 | _fallthrough_; |
71e529fc | 3170 | case SERVICE_START_POST: |
3c751b1b LP |
3171 | if (s->pid_file_pathspec && |
3172 | main_pid_good(s) == 0 && | |
3173 | control_pid_good(s) == 0) { | |
3174 | ||
3d474ef7 | 3175 | /* Give up hoping for the daemon to write its PID file */ |
f2341e0a | 3176 | log_unit_warning(u, "Daemon never wrote its PID file. Failing."); |
8bb2d17d | 3177 | |
a911bb9a LP |
3178 | service_unwatch_pid_file(s); |
3179 | if (s->state == SERVICE_START) | |
c3fda31d | 3180 | service_enter_stop_post(s, SERVICE_FAILURE_PROTOCOL); |
a911bb9a | 3181 | else |
c35755fb | 3182 | service_enter_stop(s, SERVICE_FAILURE_PROTOCOL); |
a911bb9a LP |
3183 | } |
3184 | break; | |
3185 | ||
3186 | case SERVICE_RUNNING: | |
3187 | /* service_enter_running() will figure out what to do */ | |
3188 | service_enter_running(s, SERVICE_SUCCESS); | |
3189 | break; | |
3190 | ||
c87700a1 | 3191 | case SERVICE_STOP_WATCHDOG: |
a911bb9a LP |
3192 | case SERVICE_STOP_SIGTERM: |
3193 | case SERVICE_STOP_SIGKILL: | |
3194 | ||
b13ddbbc | 3195 | if (main_pid_good(s) <= 0 && control_pid_good(s) <= 0) |
a911bb9a LP |
3196 | service_enter_stop_post(s, SERVICE_SUCCESS); |
3197 | ||
3198 | break; | |
3199 | ||
3200 | case SERVICE_STOP_POST: | |
3201 | case SERVICE_FINAL_SIGTERM: | |
3202 | case SERVICE_FINAL_SIGKILL: | |
b13ddbbc | 3203 | if (main_pid_good(s) <= 0 && control_pid_good(s) <= 0) |
a911bb9a LP |
3204 | service_enter_dead(s, SERVICE_SUCCESS, true); |
3205 | ||
3206 | break; | |
3207 | ||
3208 | default: | |
3209 | ; | |
3210 | } | |
3211 | } | |
3212 | ||
87f0e418 | 3213 | static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
5cdabc8d | 3214 | bool notify_dbus = true; |
87f0e418 | 3215 | Service *s = SERVICE(u); |
f42806df | 3216 | ServiceResult f; |
5cb5a6ff LP |
3217 | |
3218 | assert(s); | |
034c6ed7 LP |
3219 | assert(pid >= 0); |
3220 | ||
1f0958f6 | 3221 | if (is_clean_exit(code, status, s->type == SERVICE_ONESHOT ? EXIT_CLEAN_COMMAND : EXIT_CLEAN_DAEMON, &s->success_status)) |
f42806df LP |
3222 | f = SERVICE_SUCCESS; |
3223 | else if (code == CLD_EXITED) | |
3224 | f = SERVICE_FAILURE_EXIT_CODE; | |
3225 | else if (code == CLD_KILLED) | |
3226 | f = SERVICE_FAILURE_SIGNAL; | |
3227 | else if (code == CLD_DUMPED) | |
3228 | f = SERVICE_FAILURE_CORE_DUMP; | |
d06dacd0 | 3229 | else |
cfc4eb4c | 3230 | assert_not_reached("Unknown code"); |
034c6ed7 LP |
3231 | |
3232 | if (s->main_pid == pid) { | |
db01f8b3 MS |
3233 | /* Forking services may occasionally move to a new PID. |
3234 | * As long as they update the PID file before exiting the old | |
3235 | * PID, they're fine. */ | |
db256aab | 3236 | if (service_load_pid_file(s, false) > 0) |
db01f8b3 | 3237 | return; |
034c6ed7 | 3238 | |
034c6ed7 | 3239 | s->main_pid = 0; |
6ea832a2 | 3240 | exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status); |
034c6ed7 | 3241 | |
867b3b7d | 3242 | if (s->main_command) { |
fbeefb45 LP |
3243 | /* If this is not a forking service than the |
3244 | * main process got started and hence we copy | |
3245 | * the exit status so that it is recorded both | |
3246 | * as main and as control process exit | |
3247 | * status */ | |
3248 | ||
867b3b7d | 3249 | s->main_command->exec_status = s->main_exec_status; |
b708e7ce | 3250 | |
3ed0cd26 | 3251 | if (s->main_command->flags & EXEC_COMMAND_IGNORE_FAILURE) |
f42806df | 3252 | f = SERVICE_SUCCESS; |
fbeefb45 LP |
3253 | } else if (s->exec_command[SERVICE_EXEC_START]) { |
3254 | ||
3255 | /* If this is a forked process, then we should | |
3256 | * ignore the return value if this was | |
3257 | * configured for the starter process */ | |
3258 | ||
3ed0cd26 | 3259 | if (s->exec_command[SERVICE_EXEC_START]->flags & EXEC_COMMAND_IGNORE_FAILURE) |
fbeefb45 | 3260 | f = SERVICE_SUCCESS; |
034c6ed7 LP |
3261 | } |
3262 | ||
5368222d LP |
3263 | /* When this is a successful exit, let's log about the exit code on DEBUG level. If this is a failure |
3264 | * and the process exited on its own via exit(), then let's make this a NOTICE, under the assumption | |
91bbd9b7 LP |
3265 | * that the service already logged the reason at a higher log level on its own. (Internally, |
3266 | * unit_log_process_exit() will possibly bump this to WARNING if the service died due to a signal.) */ | |
3267 | unit_log_process_exit( | |
3268 | u, f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, | |
3269 | "Main process", | |
3270 | service_exec_command_to_string(SERVICE_EXEC_START), | |
3271 | code, status); | |
f42806df | 3272 | |
a0fef983 | 3273 | if (s->result == SERVICE_SUCCESS) |
f42806df | 3274 | s->result = f; |
034c6ed7 | 3275 | |
867b3b7d LP |
3276 | if (s->main_command && |
3277 | s->main_command->command_next && | |
b58aeb70 | 3278 | s->type == SERVICE_ONESHOT && |
f42806df | 3279 | f == SERVICE_SUCCESS) { |
034c6ed7 | 3280 | |
34e9ba66 LP |
3281 | /* There is another command to * |
3282 | * execute, so let's do that. */ | |
034c6ed7 | 3283 | |
f2341e0a | 3284 | log_unit_debug(u, "Running next main command for state %s.", service_state_to_string(s->state)); |
f42806df | 3285 | service_run_next_main(s); |
034c6ed7 | 3286 | |
34e9ba66 LP |
3287 | } else { |
3288 | ||
3289 | /* The service exited, so the service is officially | |
3290 | * gone. */ | |
867b3b7d | 3291 | s->main_command = NULL; |
34e9ba66 LP |
3292 | |
3293 | switch (s->state) { | |
3294 | ||
3295 | case SERVICE_START_POST: | |
3296 | case SERVICE_RELOAD: | |
3297 | case SERVICE_STOP: | |
3298 | /* Need to wait until the operation is | |
3299 | * done */ | |
c4653a4d | 3300 | break; |
7d55e835 | 3301 | |
34e9ba66 LP |
3302 | case SERVICE_START: |
3303 | if (s->type == SERVICE_ONESHOT) { | |
3304 | /* This was our main goal, so let's go on */ | |
f42806df | 3305 | if (f == SERVICE_SUCCESS) |
34e9ba66 LP |
3306 | service_enter_start_post(s); |
3307 | else | |
c3fda31d | 3308 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
34e9ba66 | 3309 | break; |
3d474ef7 JW |
3310 | } else if (s->type == SERVICE_NOTIFY) { |
3311 | /* Only enter running through a notification, so that the | |
3312 | * SERVICE_START state signifies that no ready notification | |
3313 | * has been received */ | |
3314 | if (f != SERVICE_SUCCESS) | |
c3fda31d | 3315 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
df66b93f JW |
3316 | else if (!s->remain_after_exit || s->notify_access == NOTIFY_MAIN) |
3317 | /* The service has never been and will never be active */ | |
c3fda31d | 3318 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_PROTOCOL); |
3d474ef7 | 3319 | break; |
34e9ba66 | 3320 | } |
034c6ed7 | 3321 | |
4831981d | 3322 | _fallthrough_; |
34e9ba66 | 3323 | case SERVICE_RUNNING: |
f42806df | 3324 | service_enter_running(s, f); |
34e9ba66 | 3325 | break; |
034c6ed7 | 3326 | |
c87700a1 | 3327 | case SERVICE_STOP_WATCHDOG: |
34e9ba66 LP |
3328 | case SERVICE_STOP_SIGTERM: |
3329 | case SERVICE_STOP_SIGKILL: | |
5cb5a6ff | 3330 | |
b13ddbbc | 3331 | if (control_pid_good(s) <= 0) |
f42806df | 3332 | service_enter_stop_post(s, f); |
5cb5a6ff | 3333 | |
34e9ba66 LP |
3334 | /* If there is still a control process, wait for that first */ |
3335 | break; | |
3336 | ||
bf108e55 LP |
3337 | case SERVICE_STOP_POST: |
3338 | case SERVICE_FINAL_SIGTERM: | |
3339 | case SERVICE_FINAL_SIGKILL: | |
3340 | ||
b13ddbbc | 3341 | if (control_pid_good(s) <= 0) |
bf108e55 LP |
3342 | service_enter_dead(s, f, true); |
3343 | break; | |
3344 | ||
34e9ba66 LP |
3345 | default: |
3346 | assert_not_reached("Uh, main process died at wrong time."); | |
3347 | } | |
034c6ed7 | 3348 | } |
5cb5a6ff | 3349 | |
034c6ed7 | 3350 | } else if (s->control_pid == pid) { |
34e9ba66 LP |
3351 | s->control_pid = 0; |
3352 | ||
b708e7ce | 3353 | if (s->control_command) { |
8bb2d17d | 3354 | exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status); |
a16e1123 | 3355 | |
3ed0cd26 | 3356 | if (s->control_command->flags & EXEC_COMMAND_IGNORE_FAILURE) |
f42806df | 3357 | f = SERVICE_SUCCESS; |
b708e7ce LP |
3358 | } |
3359 | ||
91bbd9b7 LP |
3360 | unit_log_process_exit( |
3361 | u, f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, | |
3362 | "Control process", | |
3363 | service_exec_command_to_string(s->control_command_id), | |
3364 | code, status); | |
f42806df | 3365 | |
a0fef983 | 3366 | if (s->result == SERVICE_SUCCESS) |
f42806df | 3367 | s->result = f; |
034c6ed7 | 3368 | |
34e9ba66 LP |
3369 | if (s->control_command && |
3370 | s->control_command->command_next && | |
f42806df | 3371 | f == SERVICE_SUCCESS) { |
034c6ed7 LP |
3372 | |
3373 | /* There is another command to * | |
3374 | * execute, so let's do that. */ | |
3375 | ||
f2341e0a | 3376 | log_unit_debug(u, "Running next control command for state %s.", service_state_to_string(s->state)); |
f42806df | 3377 | service_run_next_control(s); |
034c6ed7 | 3378 | |
80876c20 | 3379 | } else { |
034c6ed7 LP |
3380 | /* No further commands for this step, so let's |
3381 | * figure out what to do next */ | |
3382 | ||
a16e1123 LP |
3383 | s->control_command = NULL; |
3384 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
3385 | ||
f2341e0a | 3386 | log_unit_debug(u, "Got final SIGCHLD for state %s.", service_state_to_string(s->state)); |
bd982a8b | 3387 | |
034c6ed7 LP |
3388 | switch (s->state) { |
3389 | ||
3390 | case SERVICE_START_PRE: | |
f42806df | 3391 | if (f == SERVICE_SUCCESS) |
034c6ed7 LP |
3392 | service_enter_start(s); |
3393 | else | |
c3fda31d | 3394 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
034c6ed7 LP |
3395 | break; |
3396 | ||
3397 | case SERVICE_START: | |
bfba3256 LP |
3398 | if (s->type != SERVICE_FORKING) |
3399 | /* Maybe spurious event due to a reload that changed the type? */ | |
3400 | break; | |
034c6ed7 | 3401 | |
f42806df | 3402 | if (f != SERVICE_SUCCESS) { |
c3fda31d | 3403 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
3a111838 MS |
3404 | break; |
3405 | } | |
034c6ed7 | 3406 | |
3a111838 | 3407 | if (s->pid_file) { |
f42806df LP |
3408 | bool has_start_post; |
3409 | int r; | |
3410 | ||
3a111838 MS |
3411 | /* Let's try to load the pid file here if we can. |
3412 | * The PID file might actually be created by a START_POST | |
3413 | * script. In that case don't worry if the loading fails. */ | |
f42806df | 3414 | |
5d904a6a | 3415 | has_start_post = s->exec_command[SERVICE_EXEC_START_POST]; |
f42806df | 3416 | r = service_load_pid_file(s, !has_start_post); |
3a111838 MS |
3417 | if (!has_start_post && r < 0) { |
3418 | r = service_demand_pid_file(s); | |
b13ddbbc | 3419 | if (r < 0 || cgroup_good(s) == 0) |
c3fda31d | 3420 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_PROTOCOL); |
3a111838 MS |
3421 | break; |
3422 | } | |
034c6ed7 | 3423 | } else |
783e05d6 | 3424 | service_search_main_pid(s); |
034c6ed7 | 3425 | |
3a111838 | 3426 | service_enter_start_post(s); |
034c6ed7 LP |
3427 | break; |
3428 | ||
3429 | case SERVICE_START_POST: | |
f42806df | 3430 | if (f != SERVICE_SUCCESS) { |
ce359e98 | 3431 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
2096e009 | 3432 | break; |
034c6ed7 LP |
3433 | } |
3434 | ||
2096e009 | 3435 | if (s->pid_file) { |
f42806df LP |
3436 | int r; |
3437 | ||
3438 | r = service_load_pid_file(s, true); | |
2096e009 MS |
3439 | if (r < 0) { |
3440 | r = service_demand_pid_file(s); | |
b13ddbbc | 3441 | if (r < 0 || cgroup_good(s) == 0) |
c35755fb | 3442 | service_enter_stop(s, SERVICE_FAILURE_PROTOCOL); |
2096e009 MS |
3443 | break; |
3444 | } | |
3445 | } else | |
783e05d6 | 3446 | service_search_main_pid(s); |
2096e009 | 3447 | |
f42806df | 3448 | service_enter_running(s, SERVICE_SUCCESS); |
3185a36b | 3449 | break; |
034c6ed7 LP |
3450 | |
3451 | case SERVICE_RELOAD: | |
7236ce6e ZJS |
3452 | if (f == SERVICE_SUCCESS) |
3453 | if (service_load_pid_file(s, true) < 0) | |
3454 | service_search_main_pid(s); | |
3185a36b | 3455 | |
f42806df LP |
3456 | s->reload_result = f; |
3457 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
3458 | break; |
3459 | ||
3460 | case SERVICE_STOP: | |
f42806df | 3461 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
034c6ed7 LP |
3462 | break; |
3463 | ||
c87700a1 | 3464 | case SERVICE_STOP_WATCHDOG: |
034c6ed7 LP |
3465 | case SERVICE_STOP_SIGTERM: |
3466 | case SERVICE_STOP_SIGKILL: | |
3467 | if (main_pid_good(s) <= 0) | |
f42806df | 3468 | service_enter_stop_post(s, f); |
034c6ed7 LP |
3469 | |
3470 | /* If there is still a service | |
3471 | * process around, wait until | |
3472 | * that one quit, too */ | |
3473 | break; | |
3474 | ||
3475 | case SERVICE_STOP_POST: | |
3476 | case SERVICE_FINAL_SIGTERM: | |
3477 | case SERVICE_FINAL_SIGKILL: | |
bf108e55 LP |
3478 | if (main_pid_good(s) <= 0) |
3479 | service_enter_dead(s, f, true); | |
034c6ed7 LP |
3480 | break; |
3481 | ||
3482 | default: | |
3483 | assert_not_reached("Uh, control process died at wrong time."); | |
3484 | } | |
3485 | } | |
5cdabc8d LP |
3486 | } else /* Neither control nor main PID? If so, don't notify about anything */ |
3487 | notify_dbus = false; | |
c4e2ceae LP |
3488 | |
3489 | /* Notify clients about changed exit status */ | |
5cdabc8d LP |
3490 | if (notify_dbus) |
3491 | unit_add_to_dbus_queue(u); | |
a911bb9a | 3492 | |
11aef522 LP |
3493 | /* If we get a SIGCHLD event for one of the processes we were interested in, then we look for others to watch, |
3494 | * under the assumption that we'll sooner or later get a SIGCHLD for them, as the original process we watched | |
3495 | * was probably the parent of them, and they are hence now our children. */ | |
50be4f4a | 3496 | (void) unit_enqueue_rewatch_pids(u); |
034c6ed7 LP |
3497 | } |
3498 | ||
718db961 LP |
3499 | static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
3500 | Service *s = SERVICE(userdata); | |
034c6ed7 LP |
3501 | |
3502 | assert(s); | |
718db961 | 3503 | assert(source == s->timer_event_source); |
034c6ed7 LP |
3504 | |
3505 | switch (s->state) { | |
3506 | ||
3507 | case SERVICE_START_PRE: | |
3508 | case SERVICE_START: | |
f2341e0a | 3509 | log_unit_warning(UNIT(s), "%s operation timed out. Terminating.", s->state == SERVICE_START ? "Start" : "Start-pre"); |
c3fda31d | 3510 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
80876c20 LP |
3511 | break; |
3512 | ||
034c6ed7 | 3513 | case SERVICE_START_POST: |
f2341e0a | 3514 | log_unit_warning(UNIT(s), "Start-post operation timed out. Stopping."); |
ce359e98 | 3515 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3516 | break; |
3517 | ||
36c16a7c LP |
3518 | case SERVICE_RUNNING: |
3519 | log_unit_warning(UNIT(s), "Service reached runtime time limit. Stopping."); | |
3520 | service_enter_stop(s, SERVICE_FAILURE_TIMEOUT); | |
3521 | break; | |
3522 | ||
e2f3b44c | 3523 | case SERVICE_RELOAD: |
089b64d5 | 3524 | log_unit_warning(UNIT(s), "Reload operation timed out. Killing reload process."); |
e9a4f676 | 3525 | service_kill_control_process(s); |
f42806df LP |
3526 | s->reload_result = SERVICE_FAILURE_TIMEOUT; |
3527 | service_enter_running(s, SERVICE_SUCCESS); | |
e2f3b44c LP |
3528 | break; |
3529 | ||
034c6ed7 | 3530 | case SERVICE_STOP: |
f2341e0a | 3531 | log_unit_warning(UNIT(s), "Stopping timed out. Terminating."); |
f42806df | 3532 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3533 | break; |
3534 | ||
c87700a1 AZ |
3535 | case SERVICE_STOP_WATCHDOG: |
3536 | log_unit_warning(UNIT(s), "State 'stop-watchdog' timed out. Terminating."); | |
2ab2ab7b | 3537 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
db2cb23b UTL |
3538 | break; |
3539 | ||
034c6ed7 | 3540 | case SERVICE_STOP_SIGTERM: |
4819ff03 | 3541 | if (s->kill_context.send_sigkill) { |
f2341e0a | 3542 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Killing."); |
f42806df | 3543 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 3544 | } else { |
f2341e0a | 3545 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Skipping SIGKILL."); |
f42806df | 3546 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
ba035df2 LP |
3547 | } |
3548 | ||
034c6ed7 LP |
3549 | break; |
3550 | ||
3551 | case SERVICE_STOP_SIGKILL: | |
35b8ca3a | 3552 | /* Uh, we sent a SIGKILL and it is still not gone? |
034c6ed7 LP |
3553 | * Must be something we cannot kill, so let's just be |
3554 | * weirded out and continue */ | |
3555 | ||
f2341e0a | 3556 | log_unit_warning(UNIT(s), "Processes still around after SIGKILL. Ignoring."); |
f42806df | 3557 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3558 | break; |
3559 | ||
3560 | case SERVICE_STOP_POST: | |
f2341e0a | 3561 | log_unit_warning(UNIT(s), "State 'stop-post' timed out. Terminating."); |
f42806df | 3562 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3563 | break; |
3564 | ||
3565 | case SERVICE_FINAL_SIGTERM: | |
4819ff03 | 3566 | if (s->kill_context.send_sigkill) { |
f2341e0a | 3567 | log_unit_warning(UNIT(s), "State 'stop-final-sigterm' timed out. Killing."); |
f42806df | 3568 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 3569 | } else { |
f2341e0a | 3570 | log_unit_warning(UNIT(s), "State 'stop-final-sigterm' timed out. Skipping SIGKILL. Entering failed mode."); |
f42806df | 3571 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false); |
ba035df2 LP |
3572 | } |
3573 | ||
034c6ed7 LP |
3574 | break; |
3575 | ||
3576 | case SERVICE_FINAL_SIGKILL: | |
f2341e0a | 3577 | log_unit_warning(UNIT(s), "Processes still around after final SIGKILL. Entering failed mode."); |
f42806df | 3578 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true); |
034c6ed7 LP |
3579 | break; |
3580 | ||
3581 | case SERVICE_AUTO_RESTART: | |
5ce6e7f5 ZJS |
3582 | if (s->restart_usec > 0) { |
3583 | char buf_restart[FORMAT_TIMESPAN_MAX]; | |
3584 | log_unit_info(UNIT(s), | |
3585 | "Service RestartSec=%s expired, scheduling restart.", | |
3586 | format_timespan(buf_restart, sizeof buf_restart, s->restart_usec, USEC_PER_SEC)); | |
3587 | } else | |
3588 | log_unit_info(UNIT(s), | |
3589 | "Service has no hold-off time (RestartSec=0), scheduling restart."); | |
3590 | ||
034c6ed7 LP |
3591 | service_enter_restart(s); |
3592 | break; | |
3593 | ||
3594 | default: | |
3595 | assert_not_reached("Timeout at wrong time."); | |
3596 | } | |
718db961 LP |
3597 | |
3598 | return 0; | |
3599 | } | |
3600 | ||
3601 | static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata) { | |
3602 | Service *s = SERVICE(userdata); | |
a7850c7d | 3603 | char t[FORMAT_TIMESPAN_MAX]; |
2787d83c | 3604 | usec_t watchdog_usec; |
718db961 LP |
3605 | |
3606 | assert(s); | |
3607 | assert(source == s->watchdog_event_source); | |
3608 | ||
2787d83c M |
3609 | watchdog_usec = service_get_watchdog_usec(s); |
3610 | ||
2a12e32e JK |
3611 | if (UNIT(s)->manager->service_watchdogs) { |
3612 | log_unit_error(UNIT(s), "Watchdog timeout (limit %s)!", | |
3613 | format_timespan(t, sizeof(t), watchdog_usec, 1)); | |
8bb2d17d | 3614 | |
c87700a1 | 3615 | service_enter_signal(s, SERVICE_STOP_WATCHDOG, SERVICE_FAILURE_WATCHDOG); |
2a12e32e JK |
3616 | } else |
3617 | log_unit_warning(UNIT(s), "Watchdog disabled! Ignoring watchdog timeout (limit %s)!", | |
3618 | format_timespan(t, sizeof(t), watchdog_usec, 1)); | |
842129f5 | 3619 | |
718db961 | 3620 | return 0; |
5cb5a6ff LP |
3621 | } |
3622 | ||
e3285237 LP |
3623 | static bool service_notify_message_authorized(Service *s, pid_t pid, char **tags, FDSet *fds) { |
3624 | assert(s); | |
8c47c732 | 3625 | |
c952c6ec | 3626 | if (s->notify_access == NOTIFY_NONE) { |
e3285237 LP |
3627 | log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception is disabled.", pid); |
3628 | return false; | |
3629 | } | |
3630 | ||
3631 | if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) { | |
336c6e46 | 3632 | if (s->main_pid != 0) |
e3285237 | 3633 | 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 | 3634 | else |
e3285237 LP |
3635 | 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); |
3636 | ||
3637 | return false; | |
3638 | } | |
3639 | ||
3640 | if (s->notify_access == NOTIFY_EXEC && pid != s->main_pid && pid != s->control_pid) { | |
6375bd20 | 3641 | if (s->main_pid != 0 && s->control_pid != 0) |
e3285237 | 3642 | 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 |
3643 | pid, s->main_pid, s->control_pid); |
3644 | else if (s->main_pid != 0) | |
e3285237 | 3645 | 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 | 3646 | else if (s->control_pid != 0) |
e3285237 | 3647 | 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 | 3648 | else |
e3285237 LP |
3649 | 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); |
3650 | ||
3651 | return false; | |
9711848f LP |
3652 | } |
3653 | ||
e3285237 LP |
3654 | return true; |
3655 | } | |
3656 | ||
db256aab LP |
3657 | static void service_notify_message( |
3658 | Unit *u, | |
3659 | const struct ucred *ucred, | |
3660 | char **tags, | |
3661 | FDSet *fds) { | |
3662 | ||
e3285237 LP |
3663 | Service *s = SERVICE(u); |
3664 | bool notify_dbus = false; | |
3665 | const char *e; | |
cc2b7b11 | 3666 | char **i; |
db256aab | 3667 | int r; |
e3285237 LP |
3668 | |
3669 | assert(u); | |
db256aab | 3670 | assert(ucred); |
e3285237 | 3671 | |
db256aab | 3672 | if (!service_notify_message_authorized(SERVICE(u), ucred->pid, tags, fds)) |
e3285237 LP |
3673 | return; |
3674 | ||
f1d34068 | 3675 | if (DEBUG_LOGGING) { |
9711848f LP |
3676 | _cleanup_free_ char *cc = NULL; |
3677 | ||
3678 | cc = strv_join(tags, ", "); | |
db256aab | 3679 | log_unit_debug(u, "Got notification message from PID "PID_FMT" (%s)", ucred->pid, isempty(cc) ? "n/a" : cc); |
9711848f | 3680 | } |
c952c6ec | 3681 | |
8c47c732 | 3682 | /* Interpret MAINPID= */ |
28849dba | 3683 | e = strv_find_startswith(tags, "MAINPID="); |
5e56b378 | 3684 | if (e && IN_SET(s->state, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) { |
db256aab LP |
3685 | pid_t new_main_pid; |
3686 | ||
3687 | if (parse_pid(e, &new_main_pid) < 0) | |
3688 | log_unit_warning(u, "Failed to parse MAINPID= field in notification message, ignoring: %s", e); | |
3689 | else if (!s->main_pid_known || new_main_pid != s->main_pid) { | |
3690 | ||
3691 | r = service_is_suitable_main_pid(s, new_main_pid, LOG_WARNING); | |
3692 | if (r == 0) { | |
3693 | /* The new main PID is a bit suspicous, which is OK if the sender is privileged. */ | |
3694 | ||
3695 | if (ucred->uid == 0) { | |
3696 | 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); | |
3697 | r = 1; | |
3698 | } else | |
3699 | log_unit_debug(u, "New main PID "PID_FMT" does not belong to service, refusing.", new_main_pid); | |
3700 | } | |
3701 | if (r > 0) { | |
3702 | service_set_main_pid(s, new_main_pid); | |
cdc2af3e LP |
3703 | |
3704 | r = unit_watch_pid(UNIT(s), new_main_pid); | |
3705 | if (r < 0) | |
3706 | log_unit_warning_errno(UNIT(s), r, "Failed to watch new main PID "PID_FMT" for service: %m", new_main_pid); | |
3707 | ||
db256aab LP |
3708 | notify_dbus = true; |
3709 | } | |
8c47c732 LP |
3710 | } |
3711 | } | |
3712 | ||
cc2b7b11 LP |
3713 | /* Interpret READY=/STOPPING=/RELOADING=. Last one wins. */ |
3714 | STRV_FOREACH_BACKWARDS(i, tags) { | |
308d72dc | 3715 | |
cc2b7b11 LP |
3716 | if (streq(*i, "READY=1")) { |
3717 | s->notify_state = NOTIFY_READY; | |
308d72dc | 3718 | |
cc2b7b11 LP |
3719 | /* Type=notify services inform us about completed |
3720 | * initialization with READY=1 */ | |
3721 | if (s->type == SERVICE_NOTIFY && s->state == SERVICE_START) | |
3722 | service_enter_start_post(s); | |
308d72dc | 3723 | |
cc2b7b11 LP |
3724 | /* Sending READY=1 while we are reloading informs us |
3725 | * that the reloading is complete */ | |
3726 | if (s->state == SERVICE_RELOAD && s->control_pid == 0) | |
3727 | service_enter_running(s, SERVICE_SUCCESS); | |
308d72dc | 3728 | |
cc2b7b11 LP |
3729 | notify_dbus = true; |
3730 | break; | |
308d72dc | 3731 | |
cc2b7b11 LP |
3732 | } else if (streq(*i, "RELOADING=1")) { |
3733 | s->notify_state = NOTIFY_RELOADING; | |
308d72dc | 3734 | |
cc2b7b11 LP |
3735 | if (s->state == SERVICE_RUNNING) |
3736 | service_enter_reload_by_notify(s); | |
308d72dc | 3737 | |
cc2b7b11 LP |
3738 | notify_dbus = true; |
3739 | break; | |
308d72dc | 3740 | |
cc2b7b11 LP |
3741 | } else if (streq(*i, "STOPPING=1")) { |
3742 | s->notify_state = NOTIFY_STOPPING; | |
308d72dc | 3743 | |
cc2b7b11 LP |
3744 | if (s->state == SERVICE_RUNNING) |
3745 | service_enter_stop_by_notify(s); | |
308d72dc | 3746 | |
cc2b7b11 LP |
3747 | notify_dbus = true; |
3748 | break; | |
3749 | } | |
8c47c732 LP |
3750 | } |
3751 | ||
3752 | /* Interpret STATUS= */ | |
28849dba | 3753 | e = strv_find_startswith(tags, "STATUS="); |
7f110ff9 | 3754 | if (e) { |
28849dba | 3755 | _cleanup_free_ char *t = NULL; |
8c47c732 | 3756 | |
28849dba | 3757 | if (!isempty(e)) { |
3eac1bca LP |
3758 | /* Note that this size limit check is mostly paranoia: since the datagram size we are willing |
3759 | * to process is already limited to NOTIFY_BUFFER_MAX, this limit here should never be hit. */ | |
3760 | if (strlen(e) > STATUS_TEXT_MAX) | |
3761 | log_unit_warning(u, "Status message overly long (%zu > %u), ignoring.", strlen(e), STATUS_TEXT_MAX); | |
3762 | else if (!utf8_is_valid(e)) | |
3763 | log_unit_warning(u, "Status message in notification message is not UTF-8 clean, ignoring."); | |
28849dba | 3764 | else { |
28849dba LP |
3765 | t = strdup(e); |
3766 | if (!t) | |
3767 | log_oom(); | |
3a2776bc | 3768 | } |
28849dba | 3769 | } |
8c47c732 | 3770 | |
30b5275a | 3771 | if (!streq_ptr(s->status_text, t)) { |
3b319885 | 3772 | free_and_replace(s->status_text, t); |
30b5275a | 3773 | notify_dbus = true; |
28849dba | 3774 | } |
8c47c732 | 3775 | } |
842129f5 | 3776 | |
4774e357 | 3777 | /* Interpret ERRNO= */ |
28849dba | 3778 | e = strv_find_startswith(tags, "ERRNO="); |
4774e357 MAA |
3779 | if (e) { |
3780 | int status_errno; | |
3781 | ||
2fa40742 LP |
3782 | status_errno = parse_errno(e); |
3783 | if (status_errno < 0) | |
3784 | log_unit_warning_errno(u, status_errno, | |
5e1ee764 | 3785 | "Failed to parse ERRNO= field value '%s' in notification message: %m", e); |
2fa40742 LP |
3786 | else if (s->status_errno != status_errno) { |
3787 | s->status_errno = status_errno; | |
3788 | notify_dbus = true; | |
4774e357 MAA |
3789 | } |
3790 | } | |
3791 | ||
a327431b DB |
3792 | /* Interpret EXTEND_TIMEOUT= */ |
3793 | e = strv_find_startswith(tags, "EXTEND_TIMEOUT_USEC="); | |
3794 | if (e) { | |
3795 | usec_t extend_timeout_usec; | |
3796 | if (safe_atou64(e, &extend_timeout_usec) < 0) | |
3797 | log_unit_warning(u, "Failed to parse EXTEND_TIMEOUT_USEC=%s", e); | |
3798 | else | |
3799 | service_extend_timeout(s, extend_timeout_usec); | |
3800 | } | |
3801 | ||
6f285378 | 3802 | /* Interpret WATCHDOG= */ |
1f6b4113 | 3803 | if (strv_find(tags, "WATCHDOG=1")) |
842129f5 | 3804 | service_reset_watchdog(s); |
c4e2ceae | 3805 | |
c45d11cb LP |
3806 | e = strv_find_startswith(tags, "WATCHDOG_USEC="); |
3807 | if (e) { | |
3808 | usec_t watchdog_override_usec; | |
3809 | if (safe_atou64(e, &watchdog_override_usec) < 0) | |
3810 | log_unit_warning(u, "Failed to parse WATCHDOG_USEC=%s", e); | |
3811 | else | |
95d0d8ed | 3812 | service_override_watchdog_timeout(s, watchdog_override_usec); |
c45d11cb LP |
3813 | } |
3814 | ||
e78ee06d LP |
3815 | /* Process FD store messages. Either FDSTOREREMOVE=1 for removal, or FDSTORE=1 for addition. In both cases, |
3816 | * process FDNAME= for picking the file descriptor name to use. Note that FDNAME= is required when removing | |
3817 | * fds, but optional when pushing in new fds, for compatibility reasons. */ | |
3818 | if (strv_find(tags, "FDSTOREREMOVE=1")) { | |
3819 | const char *name; | |
3820 | ||
3821 | name = strv_find_startswith(tags, "FDNAME="); | |
3822 | if (!name || !fdname_is_valid(name)) | |
3823 | log_unit_warning(u, "FDSTOREREMOVE=1 requested, but no valid file descriptor name passed, ignoring."); | |
3824 | else | |
3825 | service_remove_fd_store(s, name); | |
3826 | ||
3827 | } else if (strv_find(tags, "FDSTORE=1")) { | |
8dd4c05b LP |
3828 | const char *name; |
3829 | ||
3830 | name = strv_find_startswith(tags, "FDNAME="); | |
3831 | if (name && !fdname_is_valid(name)) { | |
3832 | log_unit_warning(u, "Passed FDNAME= name is invalid, ignoring."); | |
3833 | name = NULL; | |
3834 | } | |
3835 | ||
e78ee06d | 3836 | (void) service_add_fd_store_set(s, fds, name); |
8dd4c05b | 3837 | } |
a354329f | 3838 | |
c4e2ceae | 3839 | /* Notify clients about changed status or main pid */ |
30b5275a LP |
3840 | if (notify_dbus) |
3841 | unit_add_to_dbus_queue(u); | |
8c47c732 LP |
3842 | } |
3843 | ||
7a7821c8 | 3844 | static int service_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 3845 | Service *s = SERVICE(u); |
7a7821c8 | 3846 | uint64_t t; |
68db7a3b ZJS |
3847 | int r; |
3848 | ||
3849 | if (!s->timer_event_source) | |
3850 | return 0; | |
3851 | ||
7a7821c8 | 3852 | r = sd_event_source_get_time(s->timer_event_source, &t); |
68db7a3b ZJS |
3853 | if (r < 0) |
3854 | return r; | |
7a7821c8 LP |
3855 | if (t == USEC_INFINITY) |
3856 | return 0; | |
68db7a3b | 3857 | |
7a7821c8 | 3858 | *timeout = t; |
68db7a3b ZJS |
3859 | return 1; |
3860 | } | |
3861 | ||
05e343b7 LP |
3862 | static void service_bus_name_owner_change( |
3863 | Unit *u, | |
3864 | const char *name, | |
3865 | const char *old_owner, | |
3866 | const char *new_owner) { | |
3867 | ||
3868 | Service *s = SERVICE(u); | |
718db961 | 3869 | int r; |
05e343b7 LP |
3870 | |
3871 | assert(s); | |
3872 | assert(name); | |
3873 | ||
3874 | assert(streq(s->bus_name, name)); | |
3875 | assert(old_owner || new_owner); | |
3876 | ||
3877 | if (old_owner && new_owner) | |
f2341e0a | 3878 | log_unit_debug(u, "D-Bus name %s changed owner from %s to %s", name, old_owner, new_owner); |
05e343b7 | 3879 | else if (old_owner) |
f2341e0a | 3880 | log_unit_debug(u, "D-Bus name %s no longer registered by %s", name, old_owner); |
05e343b7 | 3881 | else |
f2341e0a | 3882 | log_unit_debug(u, "D-Bus name %s now registered by %s", name, new_owner); |
05e343b7 LP |
3883 | |
3884 | s->bus_name_good = !!new_owner; | |
3885 | ||
d8ccf5fd DM |
3886 | /* Track the current owner, so we can reconstruct changes after a daemon reload */ |
3887 | r = free_and_strdup(&s->bus_name_owner, new_owner); | |
3888 | if (r < 0) { | |
3889 | log_unit_error_errno(u, r, "Unable to set new bus name owner %s: %m", new_owner); | |
3890 | return; | |
3891 | } | |
3892 | ||
05e343b7 LP |
3893 | if (s->type == SERVICE_DBUS) { |
3894 | ||
3895 | /* service_enter_running() will figure out what to | |
3896 | * do */ | |
3897 | if (s->state == SERVICE_RUNNING) | |
f42806df | 3898 | service_enter_running(s, SERVICE_SUCCESS); |
05e343b7 LP |
3899 | else if (s->state == SERVICE_START && new_owner) |
3900 | service_enter_start_post(s); | |
3901 | ||
3902 | } else if (new_owner && | |
3903 | s->main_pid <= 0 && | |
a6951a50 LP |
3904 | IN_SET(s->state, |
3905 | SERVICE_START, | |
3906 | SERVICE_START_POST, | |
3907 | SERVICE_RUNNING, | |
3908 | SERVICE_RELOAD)) { | |
05e343b7 | 3909 | |
4afd3348 | 3910 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; |
718db961 | 3911 | pid_t pid; |
05e343b7 | 3912 | |
718db961 | 3913 | /* Try to acquire PID from bus service */ |
05e343b7 | 3914 | |
056f95d0 | 3915 | r = sd_bus_get_name_creds(u->manager->api_bus, name, SD_BUS_CREDS_PID, &creds); |
5b12334d LP |
3916 | if (r >= 0) |
3917 | r = sd_bus_creds_get_pid(creds, &pid); | |
718db961 | 3918 | if (r >= 0) { |
7c102d60 | 3919 | log_unit_debug(u, "D-Bus name %s is now owned by process " PID_FMT, name, pid); |
05e343b7 | 3920 | |
718db961 LP |
3921 | service_set_main_pid(s, pid); |
3922 | unit_watch_pid(UNIT(s), pid); | |
3923 | } | |
7400b9d2 | 3924 | } |
05e343b7 LP |
3925 | } |
3926 | ||
16115b0a | 3927 | int service_set_socket_fd(Service *s, int fd, Socket *sock, bool selinux_context_net) { |
79a98c60 LP |
3928 | _cleanup_free_ char *peer = NULL; |
3929 | int r; | |
57020a3a | 3930 | |
4f2d528d LP |
3931 | assert(s); |
3932 | assert(fd >= 0); | |
3933 | ||
7f2fbbff LP |
3934 | /* This is called by the socket code when instantiating a new service for a stream socket and the socket needs |
3935 | * to be configured. We take ownership of the passed fd on success. */ | |
4f2d528d | 3936 | |
1124fe6f | 3937 | if (UNIT(s)->load_state != UNIT_LOADED) |
4f2d528d LP |
3938 | return -EINVAL; |
3939 | ||
3940 | if (s->socket_fd >= 0) | |
3941 | return -EBUSY; | |
3942 | ||
3943 | if (s->state != SERVICE_DEAD) | |
3944 | return -EAGAIN; | |
3945 | ||
366b7db4 | 3946 | if (getpeername_pretty(fd, true, &peer) >= 0) { |
79a98c60 LP |
3947 | |
3948 | if (UNIT(s)->description) { | |
3949 | _cleanup_free_ char *a; | |
3950 | ||
605405c6 | 3951 | a = strjoin(UNIT(s)->description, " (", peer, ")"); |
79a98c60 LP |
3952 | if (!a) |
3953 | return -ENOMEM; | |
3954 | ||
3955 | r = unit_set_description(UNIT(s), a); | |
3956 | } else | |
3957 | r = unit_set_description(UNIT(s), peer); | |
3958 | ||
3959 | if (r < 0) | |
3960 | return r; | |
3961 | } | |
3962 | ||
eef85c4a | 3963 | r = unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false, UNIT_DEPENDENCY_IMPLICIT); |
7f2fbbff LP |
3964 | if (r < 0) |
3965 | return r; | |
3966 | ||
4f2d528d | 3967 | s->socket_fd = fd; |
16115b0a | 3968 | s->socket_fd_selinux_context_net = selinux_context_net; |
6cf6bbc2 | 3969 | |
7f7d01ed | 3970 | unit_ref_set(&s->accept_socket, UNIT(s), UNIT(sock)); |
7f2fbbff | 3971 | return 0; |
4f2d528d LP |
3972 | } |
3973 | ||
fdf20a31 | 3974 | static void service_reset_failed(Unit *u) { |
5632e374 LP |
3975 | Service *s = SERVICE(u); |
3976 | ||
3977 | assert(s); | |
3978 | ||
fdf20a31 | 3979 | if (s->state == SERVICE_FAILED) |
5632e374 LP |
3980 | service_set_state(s, SERVICE_DEAD); |
3981 | ||
f42806df LP |
3982 | s->result = SERVICE_SUCCESS; |
3983 | s->reload_result = SERVICE_SUCCESS; | |
7a0019d3 LP |
3984 | s->n_restarts = 0; |
3985 | s->flush_n_restarts = false; | |
5632e374 LP |
3986 | } |
3987 | ||
718db961 | 3988 | static int service_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
8a0867d6 | 3989 | Service *s = SERVICE(u); |
41efeaec | 3990 | |
a6951a50 LP |
3991 | assert(s); |
3992 | ||
814cc562 | 3993 | return unit_kill_common(u, who, signo, s->main_pid, s->control_pid, error); |
8a0867d6 LP |
3994 | } |
3995 | ||
291d565a LP |
3996 | static int service_main_pid(Unit *u) { |
3997 | Service *s = SERVICE(u); | |
3998 | ||
3999 | assert(s); | |
4000 | ||
4001 | return s->main_pid; | |
4002 | } | |
4003 | ||
4004 | static int service_control_pid(Unit *u) { | |
4005 | Service *s = SERVICE(u); | |
4006 | ||
4007 | assert(s); | |
4008 | ||
4009 | return s->control_pid; | |
4010 | } | |
4011 | ||
bb2c7685 LP |
4012 | static bool service_needs_console(Unit *u) { |
4013 | Service *s = SERVICE(u); | |
4014 | ||
4015 | assert(s); | |
4016 | ||
4017 | /* We provide our own implementation of this here, instead of relying of the generic implementation | |
4018 | * unit_needs_console() provides, since we want to return false if we are in SERVICE_EXITED state. */ | |
4019 | ||
4020 | if (!exec_context_may_touch_console(&s->exec_context)) | |
4021 | return false; | |
4022 | ||
4023 | return IN_SET(s->state, | |
4024 | SERVICE_START_PRE, | |
4025 | SERVICE_START, | |
4026 | SERVICE_START_POST, | |
4027 | SERVICE_RUNNING, | |
4028 | SERVICE_RELOAD, | |
4029 | SERVICE_STOP, | |
c87700a1 | 4030 | SERVICE_STOP_WATCHDOG, |
bb2c7685 LP |
4031 | SERVICE_STOP_SIGTERM, |
4032 | SERVICE_STOP_SIGKILL, | |
4033 | SERVICE_STOP_POST, | |
4034 | SERVICE_FINAL_SIGTERM, | |
4035 | SERVICE_FINAL_SIGKILL); | |
4036 | } | |
4037 | ||
7af67e9a LP |
4038 | static int service_exit_status(Unit *u) { |
4039 | Service *s = SERVICE(u); | |
4040 | ||
4041 | assert(u); | |
4042 | ||
4043 | if (s->main_exec_status.pid <= 0 || | |
4044 | !dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) | |
4045 | return -ENODATA; | |
4046 | ||
4047 | if (s->main_exec_status.code != CLD_EXITED) | |
4048 | return -EBADE; | |
4049 | ||
4050 | return s->main_exec_status.status; | |
4051 | } | |
4052 | ||
94f04347 | 4053 | static const char* const service_restart_table[_SERVICE_RESTART_MAX] = { |
525ee6f4 LP |
4054 | [SERVICE_RESTART_NO] = "no", |
4055 | [SERVICE_RESTART_ON_SUCCESS] = "on-success", | |
50caaedb | 4056 | [SERVICE_RESTART_ON_FAILURE] = "on-failure", |
6cfe2fde | 4057 | [SERVICE_RESTART_ON_ABNORMAL] = "on-abnormal", |
dc99a976 | 4058 | [SERVICE_RESTART_ON_WATCHDOG] = "on-watchdog", |
50caaedb | 4059 | [SERVICE_RESTART_ON_ABORT] = "on-abort", |
6cfe2fde | 4060 | [SERVICE_RESTART_ALWAYS] = "always", |
94f04347 LP |
4061 | }; |
4062 | ||
4063 | DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart); | |
4064 | ||
4065 | static const char* const service_type_table[_SERVICE_TYPE_MAX] = { | |
94f04347 | 4066 | [SERVICE_SIMPLE] = "simple", |
0d624a78 | 4067 | [SERVICE_FORKING] = "forking", |
34e9ba66 | 4068 | [SERVICE_ONESHOT] = "oneshot", |
8c47c732 | 4069 | [SERVICE_DBUS] = "dbus", |
f2b68789 | 4070 | [SERVICE_NOTIFY] = "notify", |
5686391b LP |
4071 | [SERVICE_IDLE] = "idle", |
4072 | [SERVICE_EXEC] = "exec", | |
94f04347 LP |
4073 | }; |
4074 | ||
4075 | DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType); | |
4076 | ||
e537352b | 4077 | static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = { |
94f04347 LP |
4078 | [SERVICE_EXEC_START_PRE] = "ExecStartPre", |
4079 | [SERVICE_EXEC_START] = "ExecStart", | |
4080 | [SERVICE_EXEC_START_POST] = "ExecStartPost", | |
4081 | [SERVICE_EXEC_RELOAD] = "ExecReload", | |
4082 | [SERVICE_EXEC_STOP] = "ExecStop", | |
4083 | [SERVICE_EXEC_STOP_POST] = "ExecStopPost", | |
4084 | }; | |
4085 | ||
4086 | DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand); | |
4087 | ||
308d72dc LP |
4088 | static const char* const notify_state_table[_NOTIFY_STATE_MAX] = { |
4089 | [NOTIFY_UNKNOWN] = "unknown", | |
4090 | [NOTIFY_READY] = "ready", | |
4091 | [NOTIFY_RELOADING] = "reloading", | |
4092 | [NOTIFY_STOPPING] = "stopping", | |
4093 | }; | |
4094 | ||
4095 | DEFINE_STRING_TABLE_LOOKUP(notify_state, NotifyState); | |
4096 | ||
f42806df LP |
4097 | static const char* const service_result_table[_SERVICE_RESULT_MAX] = { |
4098 | [SERVICE_SUCCESS] = "success", | |
4099 | [SERVICE_FAILURE_RESOURCES] = "resources", | |
c35755fb | 4100 | [SERVICE_FAILURE_PROTOCOL] = "protocol", |
f42806df LP |
4101 | [SERVICE_FAILURE_TIMEOUT] = "timeout", |
4102 | [SERVICE_FAILURE_EXIT_CODE] = "exit-code", | |
4103 | [SERVICE_FAILURE_SIGNAL] = "signal", | |
bb242b7b | 4104 | [SERVICE_FAILURE_CORE_DUMP] = "core-dump", |
8d1b002a | 4105 | [SERVICE_FAILURE_WATCHDOG] = "watchdog", |
07299350 | 4106 | [SERVICE_FAILURE_START_LIMIT_HIT] = "start-limit-hit", |
f42806df LP |
4107 | }; |
4108 | ||
4109 | DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult); | |
4110 | ||
87f0e418 | 4111 | const UnitVTable service_vtable = { |
7d17cfbc | 4112 | .object_size = sizeof(Service), |
718db961 LP |
4113 | .exec_context_offset = offsetof(Service, exec_context), |
4114 | .cgroup_context_offset = offsetof(Service, cgroup_context), | |
4115 | .kill_context_offset = offsetof(Service, kill_context), | |
613b411c | 4116 | .exec_runtime_offset = offsetof(Service, exec_runtime), |
29206d46 | 4117 | .dynamic_creds_offset = offsetof(Service, dynamic_creds), |
3ef63c31 | 4118 | |
f975e971 LP |
4119 | .sections = |
4120 | "Unit\0" | |
4121 | "Service\0" | |
4122 | "Install\0", | |
4ad49000 | 4123 | .private_section = "Service", |
71645aca | 4124 | |
1d9cc876 LP |
4125 | .can_transient = true, |
4126 | .can_delegate = true, | |
4127 | ||
034c6ed7 LP |
4128 | .init = service_init, |
4129 | .done = service_done, | |
a16e1123 | 4130 | .load = service_load, |
a354329f | 4131 | .release_resources = service_release_resources, |
a16e1123 LP |
4132 | |
4133 | .coldplug = service_coldplug, | |
034c6ed7 | 4134 | |
5cb5a6ff LP |
4135 | .dump = service_dump, |
4136 | ||
4137 | .start = service_start, | |
4138 | .stop = service_stop, | |
4139 | .reload = service_reload, | |
4140 | ||
034c6ed7 LP |
4141 | .can_reload = service_can_reload, |
4142 | ||
8a0867d6 LP |
4143 | .kill = service_kill, |
4144 | ||
a16e1123 LP |
4145 | .serialize = service_serialize, |
4146 | .deserialize_item = service_deserialize_item, | |
4147 | ||
5cb5a6ff | 4148 | .active_state = service_active_state, |
10a94420 | 4149 | .sub_state_to_string = service_sub_state_to_string, |
5cb5a6ff | 4150 | |
deb4e708 MK |
4151 | .will_restart = service_will_restart, |
4152 | ||
f2f725e5 | 4153 | .may_gc = service_may_gc, |
701cc384 | 4154 | |
034c6ed7 | 4155 | .sigchld_event = service_sigchld_event, |
2c4104f0 | 4156 | |
fdf20a31 | 4157 | .reset_failed = service_reset_failed, |
5632e374 | 4158 | |
4ad49000 | 4159 | .notify_cgroup_empty = service_notify_cgroup_empty_event, |
8c47c732 | 4160 | .notify_message = service_notify_message, |
8e274523 | 4161 | |
291d565a LP |
4162 | .main_pid = service_main_pid, |
4163 | .control_pid = service_control_pid, | |
4164 | ||
05e343b7 | 4165 | .bus_name_owner_change = service_bus_name_owner_change, |
05e343b7 | 4166 | |
718db961 | 4167 | .bus_vtable = bus_service_vtable, |
74c964d3 LP |
4168 | .bus_set_property = bus_service_set_property, |
4169 | .bus_commit_properties = bus_service_commit_properties, | |
4139c1b2 | 4170 | |
68db7a3b | 4171 | .get_timeout = service_get_timeout, |
bb2c7685 | 4172 | .needs_console = service_needs_console, |
7af67e9a | 4173 | .exit_status = service_exit_status, |
718db961 | 4174 | |
c6918296 MS |
4175 | .status_message_formats = { |
4176 | .starting_stopping = { | |
4177 | [0] = "Starting %s...", | |
4178 | [1] = "Stopping %s...", | |
4179 | }, | |
4180 | .finished_start_job = { | |
4181 | [JOB_DONE] = "Started %s.", | |
4182 | [JOB_FAILED] = "Failed to start %s.", | |
c6918296 MS |
4183 | }, |
4184 | .finished_stop_job = { | |
4185 | [JOB_DONE] = "Stopped %s.", | |
4186 | [JOB_FAILED] = "Stopped (with error) %s.", | |
c6918296 MS |
4187 | }, |
4188 | }, | |
5cb5a6ff | 4189 | }; |