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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> |
ca78ad1d ZJS |
5 | #include <sys/stat.h> |
6 | #include <sys/types.h> | |
2c4104f0 | 7 | #include <unistd.h> |
5cb5a6ff | 8 | |
7a0019d3 LP |
9 | #include "sd-messages.h" |
10 | ||
b5efdb8a | 11 | #include "alloc-util.h" |
574634bc | 12 | #include "async.h" |
4f5dd394 LP |
13 | #include "bus-error.h" |
14 | #include "bus-kernel.h" | |
15 | #include "bus-util.h" | |
4139c1b2 | 16 | #include "dbus-service.h" |
6fcbec6f | 17 | #include "dbus-unit.h" |
f6a6225e | 18 | #include "def.h" |
4d1a6904 | 19 | #include "env-util.h" |
4f5dd394 LP |
20 | #include "escape.h" |
21 | #include "exit-status.h" | |
3ffd4af2 | 22 | #include "fd-util.h" |
a5c32cff | 23 | #include "fileio.h" |
f97b34a6 | 24 | #include "format-util.h" |
f4f15635 | 25 | #include "fs-util.h" |
4f5dd394 LP |
26 | #include "load-dropin.h" |
27 | #include "load-fragment.h" | |
28 | #include "log.h" | |
29 | #include "manager.h" | |
6bedfcbb | 30 | #include "parse-util.h" |
4f5dd394 | 31 | #include "path-util.h" |
0b452006 | 32 | #include "process-util.h" |
d68c645b | 33 | #include "serialize.h" |
3ffd4af2 | 34 | #include "service.h" |
24882e06 | 35 | #include "signal-util.h" |
4f5dd394 | 36 | #include "special.h" |
e266c068 | 37 | #include "stdio-util.h" |
8b43440b | 38 | #include "string-table.h" |
07630cea | 39 | #include "string-util.h" |
4f5dd394 LP |
40 | #include "strv.h" |
41 | #include "unit-name.h" | |
4f5dd394 LP |
42 | #include "unit.h" |
43 | #include "utf8.h" | |
44 | #include "util.h" | |
034c6ed7 | 45 | |
acbb0225 | 46 | static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = { |
87f0e418 LP |
47 | [SERVICE_DEAD] = UNIT_INACTIVE, |
48 | [SERVICE_START_PRE] = UNIT_ACTIVATING, | |
49 | [SERVICE_START] = UNIT_ACTIVATING, | |
50 | [SERVICE_START_POST] = UNIT_ACTIVATING, | |
51 | [SERVICE_RUNNING] = UNIT_ACTIVE, | |
80876c20 | 52 | [SERVICE_EXITED] = UNIT_ACTIVE, |
032ff4af | 53 | [SERVICE_RELOAD] = UNIT_RELOADING, |
87f0e418 | 54 | [SERVICE_STOP] = UNIT_DEACTIVATING, |
c87700a1 | 55 | [SERVICE_STOP_WATCHDOG] = UNIT_DEACTIVATING, |
87f0e418 LP |
56 | [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, |
57 | [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
58 | [SERVICE_STOP_POST] = UNIT_DEACTIVATING, | |
59 | [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, | |
60 | [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
fdf20a31 | 61 | [SERVICE_FAILED] = UNIT_FAILED, |
6124958c | 62 | [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING |
034c6ed7 | 63 | }; |
5cb5a6ff | 64 | |
e056b01d LP |
65 | /* For Type=idle we never want to delay any other jobs, hence we |
66 | * consider idle jobs active as soon as we start working on them */ | |
67 | static const UnitActiveState state_translation_table_idle[_SERVICE_STATE_MAX] = { | |
68 | [SERVICE_DEAD] = UNIT_INACTIVE, | |
69 | [SERVICE_START_PRE] = UNIT_ACTIVE, | |
70 | [SERVICE_START] = UNIT_ACTIVE, | |
71 | [SERVICE_START_POST] = UNIT_ACTIVE, | |
72 | [SERVICE_RUNNING] = UNIT_ACTIVE, | |
73 | [SERVICE_EXITED] = UNIT_ACTIVE, | |
74 | [SERVICE_RELOAD] = UNIT_RELOADING, | |
75 | [SERVICE_STOP] = UNIT_DEACTIVATING, | |
c87700a1 | 76 | [SERVICE_STOP_WATCHDOG] = UNIT_DEACTIVATING, |
e056b01d LP |
77 | [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, |
78 | [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
79 | [SERVICE_STOP_POST] = UNIT_DEACTIVATING, | |
80 | [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, | |
81 | [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
82 | [SERVICE_FAILED] = UNIT_FAILED, | |
83 | [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING | |
84 | }; | |
85 | ||
5686391b | 86 | static int service_dispatch_inotify_io(sd_event_source *source, int fd, uint32_t events, void *userdata); |
718db961 LP |
87 | static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); |
88 | static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata); | |
5686391b | 89 | static int service_dispatch_exec_io(sd_event_source *source, int fd, uint32_t events, void *userdata); |
718db961 | 90 | |
842129f5 | 91 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f); |
308d72dc | 92 | static void service_enter_reload_by_notify(Service *s); |
842129f5 | 93 | |
a16e1123 LP |
94 | static void service_init(Unit *u) { |
95 | Service *s = SERVICE(u); | |
96 | ||
97 | assert(u); | |
ac155bb8 | 98 | assert(u->load_state == UNIT_STUB); |
a16e1123 | 99 | |
1f19a534 OS |
100 | s->timeout_start_usec = u->manager->default_timeout_start_usec; |
101 | s->timeout_stop_usec = u->manager->default_timeout_stop_usec; | |
102 | s->restart_usec = u->manager->default_restart_usec; | |
36c16a7c | 103 | s->runtime_max_usec = USEC_INFINITY; |
0b86feac | 104 | s->type = _SERVICE_TYPE_INVALID; |
a16e1123 | 105 | s->socket_fd = -1; |
a34ceba6 | 106 | s->stdin_fd = s->stdout_fd = s->stderr_fd = -1; |
3185a36b | 107 | s->guess_main_pid = true; |
a16e1123 | 108 | |
a16e1123 | 109 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; |
00f5ad93 LP |
110 | |
111 | s->exec_context.keyring_mode = MANAGER_IS_SYSTEM(u->manager) ? | |
112 | EXEC_KEYRING_PRIVATE : EXEC_KEYRING_INHERIT; | |
aa8c4bbf LP |
113 | |
114 | s->watchdog_original_usec = USEC_INFINITY; | |
a16e1123 LP |
115 | } |
116 | ||
5e94833f LP |
117 | static void service_unwatch_control_pid(Service *s) { |
118 | assert(s); | |
119 | ||
120 | if (s->control_pid <= 0) | |
121 | return; | |
122 | ||
123 | unit_unwatch_pid(UNIT(s), s->control_pid); | |
124 | s->control_pid = 0; | |
125 | } | |
126 | ||
127 | static void service_unwatch_main_pid(Service *s) { | |
128 | assert(s); | |
129 | ||
130 | if (s->main_pid <= 0) | |
131 | return; | |
132 | ||
133 | unit_unwatch_pid(UNIT(s), s->main_pid); | |
134 | s->main_pid = 0; | |
135 | } | |
136 | ||
3e52541e MS |
137 | static void service_unwatch_pid_file(Service *s) { |
138 | if (!s->pid_file_pathspec) | |
139 | return; | |
140 | ||
f2341e0a | 141 | log_unit_debug(UNIT(s), "Stopping watch for PID file %s", s->pid_file_pathspec->path); |
718db961 | 142 | path_spec_unwatch(s->pid_file_pathspec); |
3e52541e | 143 | path_spec_done(s->pid_file_pathspec); |
a1e58e8e | 144 | s->pid_file_pathspec = mfree(s->pid_file_pathspec); |
3e52541e MS |
145 | } |
146 | ||
5925dd3c LP |
147 | static int service_set_main_pid(Service *s, pid_t pid) { |
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; | |
4d051546 | 166 | s->main_pid_alien = pid_is_my_child(pid) == 0; |
6dfa5494 | 167 | |
4d051546 | 168 | if (s->main_pid_alien) |
f2341e0a | 169 | log_unit_warning(UNIT(s), "Supervising process "PID_FMT" which is not our child. We'll most likely not notice when it exits.", pid); |
5925dd3c LP |
170 | |
171 | return 0; | |
172 | } | |
173 | ||
3e7a1f50 | 174 | void service_close_socket_fd(Service *s) { |
4f2d528d LP |
175 | assert(s); |
176 | ||
5cc3985e | 177 | /* Undo the effect of service_set_socket_fd(). */ |
4f2d528d | 178 | |
5cc3985e | 179 | s->socket_fd = asynchronous_close(s->socket_fd); |
6cf6bbc2 | 180 | |
5cc3985e LP |
181 | if (UNIT_ISSET(s->accept_socket)) { |
182 | socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket))); | |
183 | unit_ref_unset(&s->accept_socket); | |
184 | } | |
6cf6bbc2 LP |
185 | } |
186 | ||
a6927d7f MO |
187 | static void service_stop_watchdog(Service *s) { |
188 | assert(s); | |
189 | ||
718db961 | 190 | s->watchdog_event_source = sd_event_source_unref(s->watchdog_event_source); |
842129f5 | 191 | s->watchdog_timestamp = DUAL_TIMESTAMP_NULL; |
a6927d7f MO |
192 | } |
193 | ||
2787d83c M |
194 | static usec_t service_get_watchdog_usec(Service *s) { |
195 | assert(s); | |
196 | ||
197 | if (s->watchdog_override_enable) | |
198 | return s->watchdog_override_usec; | |
9fb1cdb4 LP |
199 | |
200 | return s->watchdog_original_usec; | |
2787d83c M |
201 | } |
202 | ||
842129f5 | 203 | static void service_start_watchdog(Service *s) { |
2787d83c | 204 | usec_t watchdog_usec; |
9fb1cdb4 | 205 | int r; |
bb242b7b MO |
206 | |
207 | assert(s); | |
208 | ||
2787d83c | 209 | watchdog_usec = service_get_watchdog_usec(s); |
9fb1cdb4 LP |
210 | if (IN_SET(watchdog_usec, 0, USEC_INFINITY)) { |
211 | service_stop_watchdog(s); | |
bb242b7b | 212 | return; |
9fb1cdb4 | 213 | } |
bb242b7b | 214 | |
718db961 | 215 | if (s->watchdog_event_source) { |
2787d83c | 216 | r = sd_event_source_set_time(s->watchdog_event_source, usec_add(s->watchdog_timestamp.monotonic, watchdog_usec)); |
718db961 | 217 | if (r < 0) { |
f2341e0a | 218 | log_unit_warning_errno(UNIT(s), r, "Failed to reset watchdog timer: %m"); |
718db961 LP |
219 | return; |
220 | } | |
221 | ||
842129f5 | 222 | r = sd_event_source_set_enabled(s->watchdog_event_source, SD_EVENT_ONESHOT); |
c4ef3317 | 223 | } else { |
6a0f1f6d LP |
224 | r = sd_event_add_time( |
225 | UNIT(s)->manager->event, | |
226 | &s->watchdog_event_source, | |
227 | CLOCK_MONOTONIC, | |
2787d83c | 228 | usec_add(s->watchdog_timestamp.monotonic, watchdog_usec), 0, |
6a0f1f6d | 229 | service_dispatch_watchdog, s); |
c4ef3317 | 230 | if (r < 0) { |
f2341e0a | 231 | log_unit_warning_errno(UNIT(s), r, "Failed to add watchdog timer: %m"); |
c4ef3317 LP |
232 | return; |
233 | } | |
234 | ||
7dfbe2e3 TG |
235 | (void) sd_event_source_set_description(s->watchdog_event_source, "service-watchdog"); |
236 | ||
c4ef3317 LP |
237 | /* Let's process everything else which might be a sign |
238 | * of living before we consider a service died. */ | |
239 | r = sd_event_source_set_priority(s->watchdog_event_source, SD_EVENT_PRIORITY_IDLE); | |
240 | } | |
bb242b7b | 241 | if (r < 0) |
f2341e0a | 242 | log_unit_warning_errno(UNIT(s), r, "Failed to install watchdog timer: %m"); |
bb242b7b MO |
243 | } |
244 | ||
ec35a7f6 LP |
245 | static void service_extend_event_source_timeout(Service *s, sd_event_source *source, usec_t extended) { |
246 | usec_t current; | |
247 | int r; | |
248 | ||
a327431b DB |
249 | assert(s); |
250 | ||
ec35a7f6 LP |
251 | /* Extends the specified event source timer to at least the specified time, unless it is already later |
252 | * anyway. */ | |
a327431b | 253 | |
ec35a7f6 LP |
254 | if (!source) |
255 | return; | |
a327431b | 256 | |
ec35a7f6 LP |
257 | r = sd_event_source_get_time(source, ¤t); |
258 | if (r < 0) { | |
259 | const char *desc; | |
260 | (void) sd_event_source_get_description(s->timer_event_source, &desc); | |
261 | log_unit_warning_errno(UNIT(s), r, "Failed to retrieve timeout time for event source '%s', ignoring: %m", strna(desc)); | |
262 | return; | |
263 | } | |
a327431b | 264 | |
ec35a7f6 LP |
265 | if (current >= extended) /* Current timeout is already longer, ignore this. */ |
266 | return; | |
a327431b | 267 | |
ec35a7f6 LP |
268 | r = sd_event_source_set_time(source, extended); |
269 | if (r < 0) { | |
270 | const char *desc; | |
271 | (void) sd_event_source_get_description(s->timer_event_source, &desc); | |
272 | log_unit_warning_errno(UNIT(s), r, "Failed to set timeout time for even source '%s', ignoring %m", strna(desc)); | |
a327431b DB |
273 | } |
274 | } | |
275 | ||
ec35a7f6 LP |
276 | static void service_extend_timeout(Service *s, usec_t extend_timeout_usec) { |
277 | usec_t extended; | |
278 | ||
279 | assert(s); | |
280 | ||
281 | if (IN_SET(extend_timeout_usec, 0, USEC_INFINITY)) | |
282 | return; | |
283 | ||
284 | extended = usec_add(now(CLOCK_MONOTONIC), extend_timeout_usec); | |
285 | ||
286 | service_extend_event_source_timeout(s, s->timer_event_source, extended); | |
287 | service_extend_event_source_timeout(s, s->watchdog_event_source, extended); | |
288 | } | |
289 | ||
a6927d7f MO |
290 | static void service_reset_watchdog(Service *s) { |
291 | assert(s); | |
292 | ||
293 | dual_timestamp_get(&s->watchdog_timestamp); | |
842129f5 | 294 | service_start_watchdog(s); |
a6927d7f MO |
295 | } |
296 | ||
95d0d8ed | 297 | static void service_override_watchdog_timeout(Service *s, usec_t watchdog_override_usec) { |
2787d83c M |
298 | assert(s); |
299 | ||
300 | s->watchdog_override_enable = true; | |
301 | s->watchdog_override_usec = watchdog_override_usec; | |
302 | service_reset_watchdog(s); | |
303 | ||
304 | log_unit_debug(UNIT(s), "watchdog_usec="USEC_FMT, s->watchdog_usec); | |
305 | log_unit_debug(UNIT(s), "watchdog_override_usec="USEC_FMT, s->watchdog_override_usec); | |
306 | } | |
307 | ||
a354329f LP |
308 | static void service_fd_store_unlink(ServiceFDStore *fs) { |
309 | ||
310 | if (!fs) | |
311 | return; | |
312 | ||
313 | if (fs->service) { | |
314 | assert(fs->service->n_fd_store > 0); | |
315 | LIST_REMOVE(fd_store, fs->service->fd_store, fs); | |
316 | fs->service->n_fd_store--; | |
317 | } | |
318 | ||
319 | if (fs->event_source) { | |
320 | sd_event_source_set_enabled(fs->event_source, SD_EVENT_OFF); | |
321 | sd_event_source_unref(fs->event_source); | |
322 | } | |
323 | ||
8dd4c05b | 324 | free(fs->fdname); |
a354329f LP |
325 | safe_close(fs->fd); |
326 | free(fs); | |
327 | } | |
328 | ||
f0bfbfac ZJS |
329 | static void service_release_fd_store(Service *s) { |
330 | assert(s); | |
331 | ||
7eb2a8a1 LP |
332 | if (s->n_keep_fd_store > 0) |
333 | return; | |
334 | ||
f0bfbfac ZJS |
335 | log_unit_debug(UNIT(s), "Releasing all stored fds"); |
336 | while (s->fd_store) | |
337 | service_fd_store_unlink(s->fd_store); | |
338 | ||
339 | assert(s->n_fd_store == 0); | |
340 | } | |
341 | ||
7eb2a8a1 | 342 | static void service_release_resources(Unit *u) { |
a354329f LP |
343 | Service *s = SERVICE(u); |
344 | ||
345 | assert(s); | |
346 | ||
a34ceba6 | 347 | if (!s->fd_store && s->stdin_fd < 0 && s->stdout_fd < 0 && s->stderr_fd < 0) |
a354329f LP |
348 | return; |
349 | ||
f0bfbfac | 350 | log_unit_debug(u, "Releasing resources."); |
a354329f | 351 | |
a34ceba6 LP |
352 | s->stdin_fd = safe_close(s->stdin_fd); |
353 | s->stdout_fd = safe_close(s->stdout_fd); | |
354 | s->stderr_fd = safe_close(s->stderr_fd); | |
355 | ||
7eb2a8a1 | 356 | service_release_fd_store(s); |
a354329f LP |
357 | } |
358 | ||
87f0e418 LP |
359 | static void service_done(Unit *u) { |
360 | Service *s = SERVICE(u); | |
44d8db9e LP |
361 | |
362 | assert(s); | |
363 | ||
a1e58e8e LP |
364 | s->pid_file = mfree(s->pid_file); |
365 | s->status_text = mfree(s->status_text); | |
efe6e7d3 | 366 | |
e8a565cb | 367 | s->exec_runtime = exec_runtime_unref(s->exec_runtime, false); |
e537352b | 368 | exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); |
44d8db9e | 369 | s->control_command = NULL; |
867b3b7d | 370 | s->main_command = NULL; |
44d8db9e | 371 | |
29206d46 LP |
372 | dynamic_creds_unref(&s->dynamic_creds); |
373 | ||
37520c1b LP |
374 | exit_status_set_free(&s->restart_prevent_status); |
375 | exit_status_set_free(&s->restart_force_status); | |
376 | exit_status_set_free(&s->success_status); | |
96342de6 | 377 | |
44d8db9e LP |
378 | /* This will leak a process, but at least no memory or any of |
379 | * our resources */ | |
5e94833f LP |
380 | service_unwatch_main_pid(s); |
381 | service_unwatch_control_pid(s); | |
3e52541e | 382 | service_unwatch_pid_file(s); |
44d8db9e | 383 | |
05e343b7 | 384 | if (s->bus_name) { |
ac155bb8 | 385 | unit_unwatch_bus_name(u, s->bus_name); |
a1e58e8e | 386 | s->bus_name = mfree(s->bus_name); |
05e343b7 LP |
387 | } |
388 | ||
d8ccf5fd DM |
389 | s->bus_name_owner = mfree(s->bus_name_owner); |
390 | ||
064c5938 ZJS |
391 | s->usb_function_descriptors = mfree(s->usb_function_descriptors); |
392 | s->usb_function_strings = mfree(s->usb_function_strings); | |
393 | ||
4f2d528d | 394 | service_close_socket_fd(s); |
9d565427 | 395 | s->peer = socket_peer_unref(s->peer); |
4f2d528d | 396 | |
57020a3a | 397 | unit_ref_unset(&s->accept_socket); |
f976f3f6 | 398 | |
bb242b7b MO |
399 | service_stop_watchdog(s); |
400 | ||
718db961 | 401 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
5686391b | 402 | s->exec_fd_event_source = sd_event_source_unref(s->exec_fd_event_source); |
a354329f | 403 | |
7eb2a8a1 | 404 | service_release_resources(u); |
718db961 LP |
405 | } |
406 | ||
2339fc93 LP |
407 | static int on_fd_store_io(sd_event_source *e, int fd, uint32_t revents, void *userdata) { |
408 | ServiceFDStore *fs = userdata; | |
409 | ||
410 | assert(e); | |
411 | assert(fs); | |
412 | ||
413 | /* If we get either EPOLLHUP or EPOLLERR, it's time to remove this entry from the fd store */ | |
16f70d63 ZJS |
414 | log_unit_debug(UNIT(fs->service), |
415 | "Received %s on stored fd %d (%s), closing.", | |
416 | revents & EPOLLERR ? "EPOLLERR" : "EPOLLHUP", | |
417 | fs->fd, strna(fs->fdname)); | |
2339fc93 LP |
418 | service_fd_store_unlink(fs); |
419 | return 0; | |
420 | } | |
421 | ||
8dd4c05b | 422 | static int service_add_fd_store(Service *s, int fd, const char *name) { |
2339fc93 LP |
423 | ServiceFDStore *fs; |
424 | int r; | |
425 | ||
9021ff17 ZJS |
426 | /* fd is always consumed if we return >= 0 */ |
427 | ||
2339fc93 LP |
428 | assert(s); |
429 | assert(fd >= 0); | |
430 | ||
431 | if (s->n_fd_store >= s->n_fd_store_max) | |
b0924635 ZJS |
432 | return -EXFULL; /* Our store is full. |
433 | * Use this errno rather than E[NM]FILE to distinguish from | |
434 | * the case where systemd itself hits the file limit. */ | |
2339fc93 LP |
435 | |
436 | LIST_FOREACH(fd_store, fs, s->fd_store) { | |
437 | r = same_fd(fs->fd, fd); | |
438 | if (r < 0) | |
439 | return r; | |
440 | if (r > 0) { | |
2339fc93 | 441 | safe_close(fd); |
9021ff17 | 442 | return 0; /* fd already included */ |
2339fc93 LP |
443 | } |
444 | } | |
445 | ||
446 | fs = new0(ServiceFDStore, 1); | |
447 | if (!fs) | |
448 | return -ENOMEM; | |
449 | ||
450 | fs->fd = fd; | |
451 | fs->service = s; | |
8dd4c05b | 452 | fs->fdname = strdup(name ?: "stored"); |
17dec0f7 | 453 | if (!fs->fdname) { |
454 | free(fs); | |
8dd4c05b | 455 | return -ENOMEM; |
17dec0f7 | 456 | } |
2339fc93 LP |
457 | |
458 | r = sd_event_add_io(UNIT(s)->manager->event, &fs->event_source, fd, 0, on_fd_store_io, fs); | |
3ceb72e5 | 459 | if (r < 0 && r != -EPERM) { /* EPERM indicates fds that aren't pollable, which is OK */ |
8dd4c05b | 460 | free(fs->fdname); |
2339fc93 LP |
461 | free(fs); |
462 | return r; | |
3ceb72e5 LP |
463 | } else if (r >= 0) |
464 | (void) sd_event_source_set_description(fs->event_source, "service-fd-store"); | |
7dfbe2e3 | 465 | |
2339fc93 LP |
466 | LIST_PREPEND(fd_store, s->fd_store, fs); |
467 | s->n_fd_store++; | |
468 | ||
9021ff17 | 469 | return 1; /* fd newly stored */ |
2339fc93 LP |
470 | } |
471 | ||
8dd4c05b | 472 | static int service_add_fd_store_set(Service *s, FDSet *fds, const char *name) { |
2339fc93 LP |
473 | int r; |
474 | ||
475 | assert(s); | |
476 | ||
b0924635 | 477 | while (fdset_size(fds) > 0) { |
2339fc93 LP |
478 | _cleanup_close_ int fd = -1; |
479 | ||
480 | fd = fdset_steal_first(fds); | |
481 | if (fd < 0) | |
482 | break; | |
483 | ||
8dd4c05b | 484 | r = service_add_fd_store(s, fd, name); |
b0924635 ZJS |
485 | if (r == -EXFULL) |
486 | return log_unit_warning_errno(UNIT(s), r, | |
487 | "Cannot store more fds than FileDescriptorStoreMax=%u, closing remaining.", | |
488 | s->n_fd_store_max); | |
2339fc93 | 489 | if (r < 0) |
b0924635 | 490 | return log_unit_error_errno(UNIT(s), r, "Failed to add fd to store: %m"); |
9021ff17 | 491 | if (r > 0) |
16f70d63 | 492 | log_unit_debug(UNIT(s), "Added fd %u (%s) to fd store.", fd, strna(name)); |
9021ff17 | 493 | fd = -1; |
2339fc93 LP |
494 | } |
495 | ||
2339fc93 LP |
496 | return 0; |
497 | } | |
498 | ||
e78ee06d LP |
499 | static void service_remove_fd_store(Service *s, const char *name) { |
500 | ServiceFDStore *fs, *n; | |
501 | ||
502 | assert(s); | |
503 | assert(name); | |
504 | ||
505 | LIST_FOREACH_SAFE(fd_store, fs, n, s->fd_store) { | |
506 | if (!streq(fs->fdname, name)) | |
507 | continue; | |
508 | ||
509 | log_unit_debug(UNIT(s), "Got explicit request to remove fd %i (%s), closing.", fs->fd, name); | |
510 | service_fd_store_unlink(fs); | |
511 | } | |
512 | } | |
513 | ||
718db961 LP |
514 | static int service_arm_timer(Service *s, usec_t usec) { |
515 | int r; | |
516 | ||
517 | assert(s); | |
518 | ||
718db961 | 519 | if (s->timer_event_source) { |
36c16a7c | 520 | r = sd_event_source_set_time(s->timer_event_source, usec); |
718db961 LP |
521 | if (r < 0) |
522 | return r; | |
523 | ||
524 | return sd_event_source_set_enabled(s->timer_event_source, SD_EVENT_ONESHOT); | |
525 | } | |
526 | ||
36c16a7c LP |
527 | if (usec == USEC_INFINITY) |
528 | return 0; | |
529 | ||
7dfbe2e3 | 530 | r = sd_event_add_time( |
6a0f1f6d LP |
531 | UNIT(s)->manager->event, |
532 | &s->timer_event_source, | |
533 | CLOCK_MONOTONIC, | |
36c16a7c | 534 | usec, 0, |
6a0f1f6d | 535 | service_dispatch_timer, s); |
7dfbe2e3 TG |
536 | if (r < 0) |
537 | return r; | |
538 | ||
539 | (void) sd_event_source_set_description(s->timer_event_source, "service-timer"); | |
540 | ||
541 | return 0; | |
44d8db9e LP |
542 | } |
543 | ||
243b1432 LP |
544 | static int service_verify(Service *s) { |
545 | assert(s); | |
546 | ||
1124fe6f | 547 | if (UNIT(s)->load_state != UNIT_LOADED) |
243b1432 LP |
548 | return 0; |
549 | ||
3f00d379 ZJS |
550 | if (!s->exec_command[SERVICE_EXEC_START] && !s->exec_command[SERVICE_EXEC_STOP] |
551 | && UNIT(s)->success_action == EMERGENCY_ACTION_NONE) { | |
552 | /* FailureAction= only makes sense if one of the start or stop commands is specified. | |
553 | * SuccessAction= will be executed unconditionally if no commands are specified. Hence, | |
554 | * either a command or SuccessAction= are required. */ | |
555 | ||
556 | log_unit_error(UNIT(s), "Service has no ExecStart=, ExecStop=, or SuccessAction=. Refusing."); | |
6f40aa45 | 557 | return -ENOEXEC; |
243b1432 LP |
558 | } |
559 | ||
96fb8242 | 560 | if (s->type != SERVICE_ONESHOT && !s->exec_command[SERVICE_EXEC_START]) { |
f2341e0a | 561 | log_unit_error(UNIT(s), "Service has no ExecStart= setting, which is only allowed for Type=oneshot services. Refusing."); |
6f40aa45 | 562 | return -ENOEXEC; |
96fb8242 LP |
563 | } |
564 | ||
3f00d379 ZJS |
565 | if (!s->remain_after_exit && !s->exec_command[SERVICE_EXEC_START] && UNIT(s)->success_action == EMERGENCY_ACTION_NONE) { |
566 | log_unit_error(UNIT(s), "Service has no ExecStart= and no SuccessAction= settings and does not have RemainAfterExit=yes set. Refusing."); | |
6f40aa45 | 567 | return -ENOEXEC; |
96fb8242 LP |
568 | } |
569 | ||
570 | if (s->type != SERVICE_ONESHOT && s->exec_command[SERVICE_EXEC_START]->command_next) { | |
f2341e0a | 571 | log_unit_error(UNIT(s), "Service has more than one ExecStart= setting, which is only allowed for Type=oneshot services. Refusing."); |
6f40aa45 | 572 | return -ENOEXEC; |
6cf6bbc2 LP |
573 | } |
574 | ||
b0693d30 | 575 | if (s->type == SERVICE_ONESHOT && s->restart != SERVICE_RESTART_NO) { |
f2341e0a | 576 | log_unit_error(UNIT(s), "Service has Restart= setting other than no, which isn't allowed for Type=oneshot services. Refusing."); |
6f40aa45 | 577 | return -ENOEXEC; |
37520c1b LP |
578 | } |
579 | ||
55ebf98c | 580 | if (s->type == SERVICE_ONESHOT && !exit_status_set_is_empty(&s->restart_force_status)) { |
f2341e0a | 581 | log_unit_error(UNIT(s), "Service has RestartForceStatus= set, which isn't allowed for Type=oneshot services. Refusing."); |
6f40aa45 | 582 | return -ENOEXEC; |
b0693d30 MW |
583 | } |
584 | ||
05e343b7 | 585 | if (s->type == SERVICE_DBUS && !s->bus_name) { |
f2341e0a | 586 | log_unit_error(UNIT(s), "Service is of type D-Bus but no D-Bus service name has been specified. Refusing."); |
6f40aa45 | 587 | return -ENOEXEC; |
4d0e5dbd LP |
588 | } |
589 | ||
7e2668c6 | 590 | if (s->bus_name && s->type != SERVICE_DBUS) |
f2341e0a | 591 | log_unit_warning(UNIT(s), "Service has a D-Bus service name specified, but is not of type dbus. Ignoring."); |
7e2668c6 | 592 | |
3742095b | 593 | if (s->exec_context.pam_name && !IN_SET(s->kill_context.kill_mode, KILL_CONTROL_GROUP, KILL_MIXED)) { |
f2341e0a | 594 | log_unit_error(UNIT(s), "Service has PAM enabled. Kill mode must be set to 'control-group' or 'mixed'. Refusing."); |
6f40aa45 | 595 | return -ENOEXEC; |
05e343b7 LP |
596 | } |
597 | ||
6b7e5923 PS |
598 | if (s->usb_function_descriptors && !s->usb_function_strings) |
599 | log_unit_warning(UNIT(s), "Service has USBFunctionDescriptors= setting, but no USBFunctionStrings=. Ignoring."); | |
600 | ||
601 | if (!s->usb_function_descriptors && s->usb_function_strings) | |
602 | log_unit_warning(UNIT(s), "Service has USBFunctionStrings= setting, but no USBFunctionDescriptors=. Ignoring."); | |
603 | ||
36c16a7c LP |
604 | if (s->runtime_max_usec != USEC_INFINITY && s->type == SERVICE_ONESHOT) |
605 | log_unit_warning(UNIT(s), "MaxRuntimeSec= has no effect in combination with Type=oneshot. Ignoring."); | |
606 | ||
243b1432 LP |
607 | return 0; |
608 | } | |
609 | ||
a40eb732 LP |
610 | static int service_add_default_dependencies(Service *s) { |
611 | int r; | |
612 | ||
613 | assert(s); | |
614 | ||
45f06b34 LP |
615 | if (!UNIT(s)->default_dependencies) |
616 | return 0; | |
617 | ||
a40eb732 LP |
618 | /* Add a number of automatic dependencies useful for the |
619 | * majority of services. */ | |
620 | ||
463d0d15 | 621 | if (MANAGER_IS_SYSTEM(UNIT(s)->manager)) { |
cb4c247d LP |
622 | /* First, pull in the really early boot stuff, and |
623 | * require it, so that we fail if we can't acquire | |
624 | * it. */ | |
625 | ||
5a724170 | 626 | r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
cb4c247d LP |
627 | if (r < 0) |
628 | return r; | |
629 | } else { | |
630 | ||
631 | /* In the --user instance there's no sysinit.target, | |
632 | * in that case require basic.target instead. */ | |
633 | ||
35d8c19a | 634 | r = unit_add_dependency_by_name(UNIT(s), UNIT_REQUIRES, SPECIAL_BASIC_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
cb4c247d LP |
635 | if (r < 0) |
636 | return r; | |
637 | } | |
638 | ||
639 | /* Second, if the rest of the base system is in the same | |
640 | * transaction, order us after it, but do not pull it in or | |
641 | * even require it. */ | |
35d8c19a | 642 | r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_BASIC_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
fccd44ec KS |
643 | if (r < 0) |
644 | return r; | |
a40eb732 | 645 | |
cb4c247d | 646 | /* Third, add us in for normal shutdown. */ |
5a724170 | 647 | return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
a40eb732 LP |
648 | } |
649 | ||
4dfc092a LP |
650 | static void service_fix_output(Service *s) { |
651 | assert(s); | |
652 | ||
08f3be7a LP |
653 | /* If nothing has been explicitly configured, patch default output in. If input is socket/tty we avoid this |
654 | * however, since in that case we want output to default to the same place as we read input from. */ | |
4dfc092a LP |
655 | |
656 | if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT && | |
657 | s->exec_context.std_output == EXEC_OUTPUT_INHERIT && | |
658 | s->exec_context.std_input == EXEC_INPUT_NULL) | |
1124fe6f | 659 | s->exec_context.std_error = UNIT(s)->manager->default_std_error; |
4dfc092a LP |
660 | |
661 | if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT && | |
662 | s->exec_context.std_input == EXEC_INPUT_NULL) | |
1124fe6f | 663 | s->exec_context.std_output = UNIT(s)->manager->default_std_output; |
08f3be7a LP |
664 | |
665 | if (s->exec_context.std_input == EXEC_INPUT_NULL && | |
666 | s->exec_context.stdin_data_size > 0) | |
667 | s->exec_context.std_input = EXEC_INPUT_DATA; | |
4dfc092a LP |
668 | } |
669 | ||
45f06b34 LP |
670 | static int service_setup_bus_name(Service *s) { |
671 | int r; | |
672 | ||
673 | assert(s); | |
674 | ||
675 | if (!s->bus_name) | |
676 | return 0; | |
677 | ||
35d8c19a | 678 | r = unit_add_dependency_by_name(UNIT(s), UNIT_REQUIRES, SPECIAL_DBUS_SOCKET, true, UNIT_DEPENDENCY_FILE); |
222953e8 DR |
679 | if (r < 0) |
680 | return log_unit_error_errno(UNIT(s), r, "Failed to add dependency on " SPECIAL_DBUS_SOCKET ": %m"); | |
45f06b34 | 681 | |
a132bef0 | 682 | /* We always want to be ordered against dbus.socket if both are in the transaction. */ |
35d8c19a | 683 | r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_DBUS_SOCKET, true, UNIT_DEPENDENCY_FILE); |
45f06b34 | 684 | if (r < 0) |
92bed462 | 685 | return log_unit_error_errno(UNIT(s), r, "Failed to add dependency on " SPECIAL_DBUS_SOCKET ": %m"); |
45f06b34 LP |
686 | |
687 | r = unit_watch_bus_name(UNIT(s), s->bus_name); | |
688 | if (r == -EEXIST) | |
689 | return log_unit_error_errno(UNIT(s), r, "Two services allocated for the same bus name %s, refusing operation.", s->bus_name); | |
690 | if (r < 0) | |
691 | return log_unit_error_errno(UNIT(s), r, "Cannot watch bus name %s: %m", s->bus_name); | |
692 | ||
693 | return 0; | |
694 | } | |
695 | ||
8545f7ce LP |
696 | static int service_add_extras(Service *s) { |
697 | int r; | |
698 | ||
699 | assert(s); | |
700 | ||
701 | if (s->type == _SERVICE_TYPE_INVALID) { | |
702 | /* Figure out a type automatically */ | |
703 | if (s->bus_name) | |
704 | s->type = SERVICE_DBUS; | |
705 | else if (s->exec_command[SERVICE_EXEC_START]) | |
706 | s->type = SERVICE_SIMPLE; | |
707 | else | |
708 | s->type = SERVICE_ONESHOT; | |
709 | } | |
710 | ||
711 | /* Oneshot services have disabled start timeout by default */ | |
712 | if (s->type == SERVICE_ONESHOT && !s->start_timeout_defined) | |
36c16a7c | 713 | s->timeout_start_usec = USEC_INFINITY; |
8545f7ce LP |
714 | |
715 | service_fix_output(s); | |
716 | ||
717 | r = unit_patch_contexts(UNIT(s)); | |
718 | if (r < 0) | |
719 | return r; | |
720 | ||
721 | r = unit_add_exec_dependencies(UNIT(s), &s->exec_context); | |
722 | if (r < 0) | |
723 | return r; | |
724 | ||
d79200e2 | 725 | r = unit_set_default_slice(UNIT(s)); |
8545f7ce LP |
726 | if (r < 0) |
727 | return r; | |
728 | ||
4330dc03 AJ |
729 | /* If the service needs the notify socket, let's enable it automatically. */ |
730 | if (s->notify_access == NOTIFY_NONE && | |
731 | (s->type == SERVICE_NOTIFY || s->watchdog_usec > 0 || s->n_fd_store_max > 0)) | |
8545f7ce LP |
732 | s->notify_access = NOTIFY_MAIN; |
733 | ||
45f06b34 LP |
734 | r = service_add_default_dependencies(s); |
735 | if (r < 0) | |
736 | return r; | |
8545f7ce | 737 | |
45f06b34 LP |
738 | r = service_setup_bus_name(s); |
739 | if (r < 0) | |
740 | return r; | |
8545f7ce LP |
741 | |
742 | return 0; | |
743 | } | |
744 | ||
e537352b | 745 | static int service_load(Unit *u) { |
e537352b | 746 | Service *s = SERVICE(u); |
8bb2d17d | 747 | int r; |
e537352b LP |
748 | |
749 | assert(s); | |
1e2e8133 | 750 | |
5cb5a6ff | 751 | /* Load a .service file */ |
c2756a68 LP |
752 | r = unit_load_fragment(u); |
753 | if (r < 0) | |
5cb5a6ff LP |
754 | return r; |
755 | ||
23a177ef | 756 | /* Still nothing found? Then let's give up */ |
ac155bb8 | 757 | if (u->load_state == UNIT_STUB) |
23a177ef | 758 | return -ENOENT; |
034c6ed7 | 759 | |
23a177ef | 760 | /* This is a new unit? Then let's add in some extras */ |
ac155bb8 | 761 | if (u->load_state == UNIT_LOADED) { |
c2756a68 LP |
762 | |
763 | /* We were able to load something, then let's add in | |
764 | * the dropin directories. */ | |
765 | r = unit_load_dropin(u); | |
766 | if (r < 0) | |
767 | return r; | |
768 | ||
8545f7ce LP |
769 | /* This is a new unit? Then let's add in some |
770 | * extras */ | |
771 | r = service_add_extras(s); | |
598459ce LP |
772 | if (r < 0) |
773 | return r; | |
8e274523 LP |
774 | } |
775 | ||
243b1432 | 776 | return service_verify(s); |
034c6ed7 LP |
777 | } |
778 | ||
87f0e418 | 779 | static void service_dump(Unit *u, FILE *f, const char *prefix) { |
f2e18ef1 YW |
780 | char buf_restart[FORMAT_TIMESPAN_MAX], buf_start[FORMAT_TIMESPAN_MAX], buf_stop[FORMAT_TIMESPAN_MAX]; |
781 | char buf_runtime[FORMAT_TIMESPAN_MAX], buf_watchdog[FORMAT_TIMESPAN_MAX]; | |
5cb5a6ff | 782 | ServiceExecCommand c; |
87f0e418 | 783 | Service *s = SERVICE(u); |
47be870b | 784 | const char *prefix2; |
5cb5a6ff LP |
785 | |
786 | assert(s); | |
787 | ||
4c940960 | 788 | prefix = strempty(prefix); |
63c372cb | 789 | prefix2 = strjoina(prefix, "\t"); |
44d8db9e | 790 | |
5cb5a6ff | 791 | fprintf(f, |
81a2b7ce | 792 | "%sService State: %s\n" |
f42806df LP |
793 | "%sResult: %s\n" |
794 | "%sReload Result: %s\n" | |
81a2b7ce | 795 | "%sPermissionsStartOnly: %s\n" |
8e274523 | 796 | "%sRootDirectoryStartOnly: %s\n" |
02ee865a | 797 | "%sRemainAfterExit: %s\n" |
3185a36b | 798 | "%sGuessMainPID: %s\n" |
c952c6ec | 799 | "%sType: %s\n" |
2cf3143a | 800 | "%sRestart: %s\n" |
308d72dc LP |
801 | "%sNotifyAccess: %s\n" |
802 | "%sNotifyState: %s\n", | |
81a2b7ce | 803 | prefix, service_state_to_string(s->state), |
f42806df LP |
804 | prefix, service_result_to_string(s->result), |
805 | prefix, service_result_to_string(s->reload_result), | |
81a2b7ce | 806 | prefix, yes_no(s->permissions_start_only), |
8e274523 | 807 | prefix, yes_no(s->root_directory_start_only), |
02ee865a | 808 | prefix, yes_no(s->remain_after_exit), |
3185a36b | 809 | prefix, yes_no(s->guess_main_pid), |
c952c6ec | 810 | prefix, service_type_to_string(s->type), |
2cf3143a | 811 | prefix, service_restart_to_string(s->restart), |
308d72dc LP |
812 | prefix, notify_access_to_string(s->notify_access), |
813 | prefix, notify_state_to_string(s->notify_state)); | |
5cb5a6ff | 814 | |
70123e68 LP |
815 | if (s->control_pid > 0) |
816 | fprintf(f, | |
ccd06097 ZJS |
817 | "%sControl PID: "PID_FMT"\n", |
818 | prefix, s->control_pid); | |
70123e68 LP |
819 | |
820 | if (s->main_pid > 0) | |
821 | fprintf(f, | |
ccd06097 | 822 | "%sMain PID: "PID_FMT"\n" |
6dfa5494 LP |
823 | "%sMain PID Known: %s\n" |
824 | "%sMain PID Alien: %s\n", | |
ccd06097 | 825 | prefix, s->main_pid, |
6dfa5494 LP |
826 | prefix, yes_no(s->main_pid_known), |
827 | prefix, yes_no(s->main_pid_alien)); | |
70123e68 | 828 | |
034c6ed7 LP |
829 | if (s->pid_file) |
830 | fprintf(f, | |
831 | "%sPIDFile: %s\n", | |
832 | prefix, s->pid_file); | |
833 | ||
05e343b7 LP |
834 | if (s->bus_name) |
835 | fprintf(f, | |
836 | "%sBusName: %s\n" | |
837 | "%sBus Name Good: %s\n", | |
838 | prefix, s->bus_name, | |
839 | prefix, yes_no(s->bus_name_good)); | |
840 | ||
9dfb64f8 ZJS |
841 | if (UNIT_ISSET(s->accept_socket)) |
842 | fprintf(f, | |
843 | "%sAccept Socket: %s\n", | |
844 | prefix, UNIT_DEREF(s->accept_socket)->id); | |
845 | ||
c9d41699 YW |
846 | fprintf(f, |
847 | "%sRestartSec: %s\n" | |
848 | "%sTimeoutStartSec: %s\n" | |
849 | "%sTimeoutStopSec: %s\n" | |
850 | "%sRuntimeMaxSec: %s\n" | |
851 | "%sWatchdogSec: %s\n", | |
852 | prefix, format_timespan(buf_restart, sizeof(buf_restart), s->restart_usec, USEC_PER_SEC), | |
853 | prefix, format_timespan(buf_start, sizeof(buf_start), s->timeout_start_usec, USEC_PER_SEC), | |
854 | prefix, format_timespan(buf_stop, sizeof(buf_stop), s->timeout_stop_usec, USEC_PER_SEC), | |
855 | prefix, format_timespan(buf_runtime, sizeof(buf_runtime), s->runtime_max_usec, USEC_PER_SEC), | |
856 | prefix, format_timespan(buf_watchdog, sizeof(buf_watchdog), s->watchdog_usec, USEC_PER_SEC)); | |
857 | ||
4819ff03 | 858 | kill_context_dump(&s->kill_context, f, prefix); |
5cb5a6ff LP |
859 | exec_context_dump(&s->exec_context, f, prefix); |
860 | ||
e537352b | 861 | for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) { |
5cb5a6ff | 862 | |
44d8db9e LP |
863 | if (!s->exec_command[c]) |
864 | continue; | |
865 | ||
40d50879 | 866 | fprintf(f, "%s-> %s:\n", |
94f04347 | 867 | prefix, service_exec_command_to_string(c)); |
44d8db9e LP |
868 | |
869 | exec_command_dump_list(s->exec_command[c], f, prefix2); | |
5cb5a6ff | 870 | } |
44d8db9e | 871 | |
8c47c732 LP |
872 | if (s->status_text) |
873 | fprintf(f, "%sStatus Text: %s\n", | |
874 | prefix, s->status_text); | |
a354329f | 875 | |
ece174c5 | 876 | if (s->n_fd_store_max > 0) |
a354329f LP |
877 | fprintf(f, |
878 | "%sFile Descriptor Store Max: %u\n" | |
da6053d0 | 879 | "%sFile Descriptor Store Current: %zu\n", |
a354329f LP |
880 | prefix, s->n_fd_store_max, |
881 | prefix, s->n_fd_store); | |
18f573aa LP |
882 | |
883 | cgroup_context_dump(&s->cgroup_context, f, prefix); | |
5cb5a6ff LP |
884 | } |
885 | ||
db256aab LP |
886 | static int service_is_suitable_main_pid(Service *s, pid_t pid, int prio) { |
887 | Unit *owner; | |
888 | ||
889 | assert(s); | |
890 | assert(pid_is_valid(pid)); | |
891 | ||
892 | /* Checks whether the specified PID is suitable as main PID for this service. returns negative if not, 0 if the | |
893 | * PID is questionnable but should be accepted if the source of configuration is trusted. > 0 if the PID is | |
894 | * good */ | |
895 | ||
896 | if (pid == getpid_cached() || pid == 1) { | |
897 | log_unit_full(UNIT(s), prio, 0, "New main PID "PID_FMT" is the manager, refusing.", pid); | |
898 | return -EPERM; | |
899 | } | |
900 | ||
901 | if (pid == s->control_pid) { | |
902 | log_unit_full(UNIT(s), prio, 0, "New main PID "PID_FMT" is the control process, refusing.", pid); | |
903 | return -EPERM; | |
904 | } | |
905 | ||
906 | if (!pid_is_alive(pid)) { | |
907 | log_unit_full(UNIT(s), prio, 0, "New main PID "PID_FMT" does not exist or is a zombie.", pid); | |
908 | return -ESRCH; | |
909 | } | |
910 | ||
911 | owner = manager_get_unit_by_pid(UNIT(s)->manager, pid); | |
912 | if (owner == UNIT(s)) { | |
913 | log_unit_debug(UNIT(s), "New main PID "PID_FMT" belongs to service, we are happy.", pid); | |
914 | return 1; /* Yay, it's definitely a good PID */ | |
915 | } | |
916 | ||
917 | return 0; /* Hmm it's a suspicious PID, let's accept it if configuration source is trusted */ | |
918 | } | |
919 | ||
c5419d42 | 920 | static int service_load_pid_file(Service *s, bool may_warn) { |
db256aab | 921 | char procfs[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; |
73969ab6 | 922 | bool questionable_pid_file = false; |
7fd1b19b | 923 | _cleanup_free_ char *k = NULL; |
db256aab LP |
924 | _cleanup_close_ int fd = -1; |
925 | int r, prio; | |
5925dd3c | 926 | pid_t pid; |
034c6ed7 LP |
927 | |
928 | assert(s); | |
929 | ||
034c6ed7 | 930 | if (!s->pid_file) |
13230d5d | 931 | return -ENOENT; |
034c6ed7 | 932 | |
db256aab LP |
933 | prio = may_warn ? LOG_INFO : LOG_DEBUG; |
934 | ||
935 | fd = chase_symlinks(s->pid_file, NULL, CHASE_OPEN|CHASE_SAFE, NULL); | |
36c97dec FB |
936 | if (fd == -ENOLINK) { |
937 | log_unit_full(UNIT(s), LOG_DEBUG, fd, "Potentially unsafe symlink chain, will now retry with relaxed checks: %s", s->pid_file); | |
73969ab6 LP |
938 | |
939 | questionable_pid_file = true; | |
940 | ||
941 | fd = chase_symlinks(s->pid_file, NULL, CHASE_OPEN, NULL); | |
942 | } | |
db256aab LP |
943 | if (fd < 0) |
944 | 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)); | |
945 | ||
946 | /* 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. */ | |
947 | xsprintf(procfs, "/proc/self/fd/%i", fd); | |
948 | r = read_one_line_file(procfs, &k); | |
949 | if (r < 0) | |
950 | 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 | 951 | |
5925dd3c | 952 | r = parse_pid(k, &pid); |
db256aab LP |
953 | if (r < 0) |
954 | return log_unit_full(UNIT(s), prio, r, "Failed to parse PID from file %s: %m", s->pid_file); | |
955 | ||
956 | if (s->main_pid_known && pid == s->main_pid) | |
957 | return 0; | |
958 | ||
959 | r = service_is_suitable_main_pid(s, pid, prio); | |
960 | if (r < 0) | |
5925dd3c | 961 | return r; |
db256aab LP |
962 | if (r == 0) { |
963 | struct stat st; | |
406eaf93 | 964 | |
73969ab6 LP |
965 | if (questionable_pid_file) { |
966 | log_unit_error(UNIT(s), "Refusing to accept PID outside of service control group, acquired through unsafe symlink chain: %s", s->pid_file); | |
967 | return -EPERM; | |
968 | } | |
969 | ||
db256aab LP |
970 | /* Hmm, it's not clear if the new main PID is safe. Let's allow this if the PID file is owned by root */ |
971 | ||
972 | if (fstat(fd, &st) < 0) | |
973 | return log_unit_error_errno(UNIT(s), errno, "Failed to fstat() PID file O_PATH fd: %m"); | |
974 | ||
975 | if (st.st_uid != 0) { | |
976 | 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); | |
977 | return -EPERM; | |
978 | } | |
979 | ||
980 | 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 |
981 | } |
982 | ||
db01f8b3 | 983 | if (s->main_pid_known) { |
f2341e0a | 984 | log_unit_debug(UNIT(s), "Main PID changing: "PID_FMT" -> "PID_FMT, s->main_pid, pid); |
8bb2d17d | 985 | |
db01f8b3 MS |
986 | service_unwatch_main_pid(s); |
987 | s->main_pid_known = false; | |
3a111838 | 988 | } else |
f2341e0a | 989 | log_unit_debug(UNIT(s), "Main PID loaded: "PID_FMT, pid); |
db01f8b3 | 990 | |
117dcc57 ZJS |
991 | r = service_set_main_pid(s, pid); |
992 | if (r < 0) | |
16f6025e LP |
993 | return r; |
994 | ||
f75f613d | 995 | r = unit_watch_pid(UNIT(s), pid, false); |
e8b509d3 LP |
996 | if (r < 0) /* FIXME: we need to do something here */ |
997 | return log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" for service: %m", pid); | |
034c6ed7 | 998 | |
db256aab | 999 | return 1; |
034c6ed7 LP |
1000 | } |
1001 | ||
783e05d6 | 1002 | static void service_search_main_pid(Service *s) { |
efdb0237 | 1003 | pid_t pid = 0; |
4fbf50b3 LP |
1004 | int r; |
1005 | ||
1006 | assert(s); | |
1007 | ||
3185a36b LP |
1008 | /* If we know it anyway, don't ever fallback to unreliable |
1009 | * heuristics */ | |
4fbf50b3 | 1010 | if (s->main_pid_known) |
783e05d6 | 1011 | return; |
4fbf50b3 | 1012 | |
3185a36b | 1013 | if (!s->guess_main_pid) |
783e05d6 | 1014 | return; |
3185a36b | 1015 | |
4fbf50b3 LP |
1016 | assert(s->main_pid <= 0); |
1017 | ||
783e05d6 ZJS |
1018 | if (unit_search_main_pid(UNIT(s), &pid) < 0) |
1019 | return; | |
4fbf50b3 | 1020 | |
f2341e0a | 1021 | log_unit_debug(UNIT(s), "Main PID guessed: "PID_FMT, pid); |
783e05d6 ZJS |
1022 | if (service_set_main_pid(s, pid) < 0) |
1023 | return; | |
4fbf50b3 | 1024 | |
f75f613d | 1025 | r = unit_watch_pid(UNIT(s), pid, false); |
783e05d6 | 1026 | if (r < 0) |
4fbf50b3 | 1027 | /* FIXME: we need to do something here */ |
f2341e0a | 1028 | log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" from: %m", pid); |
4fbf50b3 LP |
1029 | } |
1030 | ||
034c6ed7 LP |
1031 | static void service_set_state(Service *s, ServiceState state) { |
1032 | ServiceState old_state; | |
e056b01d | 1033 | const UnitActiveState *table; |
842129f5 | 1034 | |
5cb5a6ff LP |
1035 | assert(s); |
1036 | ||
6fcbec6f LP |
1037 | if (s->state != state) |
1038 | bus_unit_send_pending_change_signal(UNIT(s), false); | |
1039 | ||
e056b01d LP |
1040 | table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
1041 | ||
034c6ed7 | 1042 | old_state = s->state; |
5cb5a6ff | 1043 | s->state = state; |
034c6ed7 | 1044 | |
3a111838 MS |
1045 | service_unwatch_pid_file(s); |
1046 | ||
842129f5 LP |
1047 | if (!IN_SET(state, |
1048 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
36c16a7c | 1049 | SERVICE_RUNNING, |
842129f5 | 1050 | SERVICE_RELOAD, |
c87700a1 | 1051 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
842129f5 LP |
1052 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL, |
1053 | SERVICE_AUTO_RESTART)) | |
718db961 | 1054 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
034c6ed7 | 1055 | |
842129f5 LP |
1056 | if (!IN_SET(state, |
1057 | SERVICE_START, SERVICE_START_POST, | |
1058 | SERVICE_RUNNING, SERVICE_RELOAD, | |
c87700a1 | 1059 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf108e55 | 1060 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
5e94833f | 1061 | service_unwatch_main_pid(s); |
867b3b7d LP |
1062 | s->main_command = NULL; |
1063 | } | |
034c6ed7 | 1064 | |
842129f5 LP |
1065 | if (!IN_SET(state, |
1066 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
1067 | SERVICE_RELOAD, | |
c87700a1 | 1068 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
842129f5 | 1069 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
5e94833f | 1070 | service_unwatch_control_pid(s); |
034c6ed7 | 1071 | s->control_command = NULL; |
a16e1123 | 1072 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; |
e537352b | 1073 | } |
034c6ed7 | 1074 | |
50be4f4a | 1075 | if (IN_SET(state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART)) { |
a911bb9a | 1076 | unit_unwatch_all_pids(UNIT(s)); |
50be4f4a LP |
1077 | unit_dequeue_rewatch_pids(UNIT(s)); |
1078 | } | |
a911bb9a | 1079 | |
842129f5 LP |
1080 | if (!IN_SET(state, |
1081 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
1082 | SERVICE_RUNNING, SERVICE_RELOAD, | |
c87700a1 | 1083 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
57614eb1 | 1084 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL) && |
5cc3985e | 1085 | !(state == SERVICE_DEAD && UNIT(s)->job)) |
4f2d528d LP |
1086 | service_close_socket_fd(s); |
1087 | ||
5686391b LP |
1088 | if (state != SERVICE_START) |
1089 | s->exec_fd_event_source = sd_event_source_unref(s->exec_fd_event_source); | |
1090 | ||
7596e9e1 | 1091 | if (!IN_SET(state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
a6927d7f MO |
1092 | service_stop_watchdog(s); |
1093 | ||
f6023656 LP |
1094 | /* For the inactive states unit_notify() will trim the cgroup, |
1095 | * but for exit we have to do that ourselves... */ | |
2c289ea8 | 1096 | if (state == SERVICE_EXITED && !MANAGER_IS_RELOADING(UNIT(s)->manager)) |
efdb0237 | 1097 | unit_prune_cgroup(UNIT(s)); |
f6023656 | 1098 | |
e537352b | 1099 | if (old_state != state) |
f2341e0a | 1100 | log_unit_debug(UNIT(s), "Changed %s -> %s", service_state_to_string(old_state), service_state_to_string(state)); |
acbb0225 | 1101 | |
2ad2e41a LP |
1102 | unit_notify(UNIT(s), table[old_state], table[state], |
1103 | (s->reload_result == SERVICE_SUCCESS ? 0 : UNIT_NOTIFY_RELOAD_FAILURE) | | |
1104 | (s->will_auto_restart ? UNIT_NOTIFY_WILL_AUTO_RESTART : 0)); | |
034c6ed7 LP |
1105 | } |
1106 | ||
36c16a7c LP |
1107 | static usec_t service_coldplug_timeout(Service *s) { |
1108 | assert(s); | |
1109 | ||
1110 | switch (s->deserialized_state) { | |
1111 | ||
1112 | case SERVICE_START_PRE: | |
1113 | case SERVICE_START: | |
1114 | case SERVICE_START_POST: | |
1115 | case SERVICE_RELOAD: | |
1116 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->timeout_start_usec); | |
1117 | ||
1118 | case SERVICE_RUNNING: | |
1119 | return usec_add(UNIT(s)->active_enter_timestamp.monotonic, s->runtime_max_usec); | |
1120 | ||
1121 | case SERVICE_STOP: | |
c87700a1 | 1122 | case SERVICE_STOP_WATCHDOG: |
36c16a7c LP |
1123 | case SERVICE_STOP_SIGTERM: |
1124 | case SERVICE_STOP_SIGKILL: | |
1125 | case SERVICE_STOP_POST: | |
1126 | case SERVICE_FINAL_SIGTERM: | |
1127 | case SERVICE_FINAL_SIGKILL: | |
1128 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->timeout_stop_usec); | |
1129 | ||
1130 | case SERVICE_AUTO_RESTART: | |
1131 | return usec_add(UNIT(s)->inactive_enter_timestamp.monotonic, s->restart_usec); | |
1132 | ||
1133 | default: | |
1134 | return USEC_INFINITY; | |
1135 | } | |
1136 | } | |
1137 | ||
be847e82 | 1138 | static int service_coldplug(Unit *u) { |
a16e1123 LP |
1139 | Service *s = SERVICE(u); |
1140 | int r; | |
1141 | ||
1142 | assert(s); | |
1143 | assert(s->state == SERVICE_DEAD); | |
1144 | ||
930d2838 LP |
1145 | if (s->deserialized_state == s->state) |
1146 | return 0; | |
6c12b52e | 1147 | |
36c16a7c LP |
1148 | r = service_arm_timer(s, service_coldplug_timeout(s)); |
1149 | if (r < 0) | |
1150 | return r; | |
a911bb9a | 1151 | |
930d2838 LP |
1152 | if (s->main_pid > 0 && |
1153 | pid_is_unwaited(s->main_pid) && | |
9acac212 | 1154 | (IN_SET(s->deserialized_state, |
930d2838 LP |
1155 | SERVICE_START, SERVICE_START_POST, |
1156 | SERVICE_RUNNING, SERVICE_RELOAD, | |
c87700a1 | 1157 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
930d2838 | 1158 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL))) { |
f75f613d | 1159 | r = unit_watch_pid(UNIT(s), s->main_pid, false); |
930d2838 LP |
1160 | if (r < 0) |
1161 | return r; | |
1162 | } | |
bb242b7b | 1163 | |
930d2838 LP |
1164 | if (s->control_pid > 0 && |
1165 | pid_is_unwaited(s->control_pid) && | |
1166 | IN_SET(s->deserialized_state, | |
1167 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
1168 | SERVICE_RELOAD, | |
c87700a1 | 1169 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
930d2838 | 1170 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
f75f613d | 1171 | r = unit_watch_pid(UNIT(s), s->control_pid, false); |
930d2838 LP |
1172 | if (r < 0) |
1173 | return r; | |
a16e1123 | 1174 | } |
92c1622e | 1175 | |
e8a565cb | 1176 | if (!IN_SET(s->deserialized_state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART)) { |
50be4f4a | 1177 | (void) unit_enqueue_rewatch_pids(u); |
29206d46 | 1178 | (void) unit_setup_dynamic_creds(u); |
e8a565cb YW |
1179 | (void) unit_setup_exec_runtime(u); |
1180 | } | |
29206d46 | 1181 | |
50be4f4a LP |
1182 | if (IN_SET(s->deserialized_state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
1183 | service_start_watchdog(s); | |
1184 | ||
3ebcd323 ZJS |
1185 | if (UNIT_ISSET(s->accept_socket)) { |
1186 | Socket* socket = SOCKET(UNIT_DEREF(s->accept_socket)); | |
1187 | ||
1188 | if (socket->max_connections_per_source > 0) { | |
1189 | SocketPeer *peer; | |
1190 | ||
1191 | /* Make a best-effort attempt at bumping the connection count */ | |
1192 | if (socket_acquire_peer(socket, s->socket_fd, &peer) > 0) { | |
1193 | socket_peer_unref(s->peer); | |
1194 | s->peer = peer; | |
1195 | } | |
1196 | } | |
1197 | } | |
1198 | ||
930d2838 | 1199 | service_set_state(s, s->deserialized_state); |
a16e1123 LP |
1200 | return 0; |
1201 | } | |
1202 | ||
25b583d7 LP |
1203 | static int service_collect_fds( |
1204 | Service *s, | |
1205 | int **fds, | |
1206 | char ***fd_names, | |
1207 | size_t *n_socket_fds, | |
1208 | size_t *n_storage_fds) { | |
4c47affc | 1209 | |
8dd4c05b | 1210 | _cleanup_strv_free_ char **rfd_names = NULL; |
a354329f | 1211 | _cleanup_free_ int *rfds = NULL; |
25b583d7 | 1212 | size_t rn_socket_fds = 0, rn_storage_fds = 0; |
4c47affc | 1213 | int r; |
44d8db9e LP |
1214 | |
1215 | assert(s); | |
1216 | assert(fds); | |
8dd4c05b | 1217 | assert(fd_names); |
9b141911 | 1218 | assert(n_socket_fds); |
25b583d7 | 1219 | assert(n_storage_fds); |
44d8db9e | 1220 | |
8dd4c05b | 1221 | if (s->socket_fd >= 0) { |
6cf6bbc2 | 1222 | |
8dd4c05b | 1223 | /* Pass the per-connection socket */ |
57020a3a | 1224 | |
8dd4c05b LP |
1225 | rfds = new(int, 1); |
1226 | if (!rfds) | |
1227 | return -ENOMEM; | |
1228 | rfds[0] = s->socket_fd; | |
57020a3a | 1229 | |
bea1a013 | 1230 | rfd_names = strv_new("connection"); |
8dd4c05b LP |
1231 | if (!rfd_names) |
1232 | return -ENOMEM; | |
44d8db9e | 1233 | |
4c47affc | 1234 | rn_socket_fds = 1; |
8dd4c05b LP |
1235 | } else { |
1236 | Iterator i; | |
eef85c4a | 1237 | void *v; |
8dd4c05b | 1238 | Unit *u; |
44d8db9e | 1239 | |
8dd4c05b | 1240 | /* Pass all our configured sockets for singleton services */ |
44d8db9e | 1241 | |
eef85c4a | 1242 | HASHMAP_FOREACH_KEY(v, u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) { |
8dd4c05b LP |
1243 | _cleanup_free_ int *cfds = NULL; |
1244 | Socket *sock; | |
1245 | int cn_fds; | |
44d8db9e | 1246 | |
8dd4c05b LP |
1247 | if (u->type != UNIT_SOCKET) |
1248 | continue; | |
44d8db9e | 1249 | |
8dd4c05b | 1250 | sock = SOCKET(u); |
a354329f | 1251 | |
8dd4c05b LP |
1252 | cn_fds = socket_collect_fds(sock, &cfds); |
1253 | if (cn_fds < 0) | |
1254 | return cn_fds; | |
44d8db9e | 1255 | |
8dd4c05b LP |
1256 | if (cn_fds <= 0) |
1257 | continue; | |
79c7626d | 1258 | |
8dd4c05b | 1259 | if (!rfds) { |
1cc6c93a | 1260 | rfds = TAKE_PTR(cfds); |
4c47affc | 1261 | rn_socket_fds = cn_fds; |
8dd4c05b LP |
1262 | } else { |
1263 | int *t; | |
1264 | ||
62d74c78 | 1265 | t = reallocarray(rfds, rn_socket_fds + cn_fds, sizeof(int)); |
8dd4c05b LP |
1266 | if (!t) |
1267 | return -ENOMEM; | |
1268 | ||
4c47affc | 1269 | memcpy(t + rn_socket_fds, cfds, cn_fds * sizeof(int)); |
8dd4c05b LP |
1270 | |
1271 | rfds = t; | |
4c47affc | 1272 | rn_socket_fds += cn_fds; |
8dd4c05b LP |
1273 | } |
1274 | ||
1275 | r = strv_extend_n(&rfd_names, socket_fdname(sock), cn_fds); | |
1276 | if (r < 0) | |
1277 | return r; | |
44d8db9e LP |
1278 | } |
1279 | } | |
1280 | ||
a354329f LP |
1281 | if (s->n_fd_store > 0) { |
1282 | ServiceFDStore *fs; | |
25b583d7 | 1283 | size_t n_fds; |
8dd4c05b | 1284 | char **nl; |
a354329f LP |
1285 | int *t; |
1286 | ||
62d74c78 | 1287 | t = reallocarray(rfds, rn_socket_fds + s->n_fd_store, sizeof(int)); |
a354329f LP |
1288 | if (!t) |
1289 | return -ENOMEM; | |
1290 | ||
1291 | rfds = t; | |
8dd4c05b | 1292 | |
62d74c78 | 1293 | nl = reallocarray(rfd_names, rn_socket_fds + s->n_fd_store + 1, sizeof(char *)); |
8dd4c05b LP |
1294 | if (!nl) |
1295 | return -ENOMEM; | |
1296 | ||
1297 | rfd_names = nl; | |
4c47affc | 1298 | n_fds = rn_socket_fds; |
8dd4c05b LP |
1299 | |
1300 | LIST_FOREACH(fd_store, fs, s->fd_store) { | |
4c47affc FB |
1301 | rfds[n_fds] = fs->fd; |
1302 | rfd_names[n_fds] = strdup(strempty(fs->fdname)); | |
1303 | if (!rfd_names[n_fds]) | |
8dd4c05b LP |
1304 | return -ENOMEM; |
1305 | ||
4c47affc FB |
1306 | rn_storage_fds++; |
1307 | n_fds++; | |
8dd4c05b LP |
1308 | } |
1309 | ||
4c47affc | 1310 | rfd_names[n_fds] = NULL; |
a354329f LP |
1311 | } |
1312 | ||
1cc6c93a YW |
1313 | *fds = TAKE_PTR(rfds); |
1314 | *fd_names = TAKE_PTR(rfd_names); | |
9b141911 | 1315 | *n_socket_fds = rn_socket_fds; |
4c47affc | 1316 | *n_storage_fds = rn_storage_fds; |
3e33402a | 1317 | |
4c47affc | 1318 | return 0; |
44d8db9e LP |
1319 | } |
1320 | ||
5686391b LP |
1321 | static int service_allocate_exec_fd_event_source( |
1322 | Service *s, | |
1323 | int fd, | |
1324 | sd_event_source **ret_event_source) { | |
1325 | ||
1326 | _cleanup_(sd_event_source_unrefp) sd_event_source *source = NULL; | |
1327 | int r; | |
1328 | ||
1329 | assert(s); | |
1330 | assert(fd >= 0); | |
1331 | assert(ret_event_source); | |
1332 | ||
1333 | r = sd_event_add_io(UNIT(s)->manager->event, &source, fd, 0, service_dispatch_exec_io, s); | |
1334 | if (r < 0) | |
1335 | return log_unit_error_errno(UNIT(s), r, "Failed to allocate exec_fd event source: %m"); | |
1336 | ||
1337 | /* This is a bit lower priority than SIGCHLD, as that carries a lot more interesting failure information */ | |
1338 | ||
1339 | r = sd_event_source_set_priority(source, SD_EVENT_PRIORITY_NORMAL-3); | |
1340 | if (r < 0) | |
1341 | return log_unit_error_errno(UNIT(s), r, "Failed to adjust priority of exec_fd event source: %m"); | |
1342 | ||
1343 | (void) sd_event_source_set_description(source, "service event_fd"); | |
1344 | ||
1345 | r = sd_event_source_set_io_fd_own(source, true); | |
1346 | if (r < 0) | |
1347 | return log_unit_error_errno(UNIT(s), r, "Failed to pass ownership of fd to event source: %m"); | |
1348 | ||
1349 | *ret_event_source = TAKE_PTR(source); | |
1350 | return 0; | |
1351 | } | |
1352 | ||
1353 | static int service_allocate_exec_fd( | |
1354 | Service *s, | |
1355 | sd_event_source **ret_event_source, | |
1356 | int* ret_exec_fd) { | |
1357 | ||
1358 | _cleanup_close_pair_ int p[2] = { -1, -1 }; | |
1359 | int r; | |
1360 | ||
1361 | assert(s); | |
1362 | assert(ret_event_source); | |
1363 | assert(ret_exec_fd); | |
1364 | ||
1365 | if (pipe2(p, O_CLOEXEC|O_NONBLOCK) < 0) | |
1366 | return log_unit_error_errno(UNIT(s), errno, "Failed to allocate exec_fd pipe: %m"); | |
1367 | ||
1368 | r = service_allocate_exec_fd_event_source(s, p[0], ret_event_source); | |
1369 | if (r < 0) | |
1370 | return r; | |
1371 | ||
1372 | p[0] = -1; | |
1373 | *ret_exec_fd = TAKE_FD(p[1]); | |
1374 | ||
1375 | return 0; | |
1376 | } | |
1377 | ||
6375bd20 JW |
1378 | static bool service_exec_needs_notify_socket(Service *s, ExecFlags flags) { |
1379 | assert(s); | |
1380 | ||
1381 | /* Notifications are accepted depending on the process and | |
1382 | * the access setting of the service: | |
1383 | * process: \ access: NONE MAIN EXEC ALL | |
1384 | * main no yes yes yes | |
1385 | * control no no yes yes | |
1386 | * other (forked) no no no yes */ | |
1387 | ||
1388 | if (flags & EXEC_IS_CONTROL) | |
1389 | /* A control process */ | |
1390 | return IN_SET(s->notify_access, NOTIFY_EXEC, NOTIFY_ALL); | |
1391 | ||
1392 | /* We only spawn main processes and control processes, so any | |
1393 | * process that is not a control process is a main process */ | |
1394 | return s->notify_access != NOTIFY_NONE; | |
1395 | } | |
1396 | ||
81a2b7ce LP |
1397 | static int service_spawn( |
1398 | Service *s, | |
1399 | ExecCommand *c, | |
21b2ce39 | 1400 | usec_t timeout, |
c39f1ce2 | 1401 | ExecFlags flags, |
81a2b7ce LP |
1402 | pid_t *_pid) { |
1403 | ||
b9c04eaf | 1404 | _cleanup_(exec_params_clear) ExecParameters exec_params = { |
c39f1ce2 LP |
1405 | .flags = flags, |
1406 | .stdin_fd = -1, | |
1407 | .stdout_fd = -1, | |
1408 | .stderr_fd = -1, | |
25b583d7 | 1409 | .exec_fd = -1, |
9fa95f85 | 1410 | }; |
3c7416b6 | 1411 | _cleanup_strv_free_ char **final_env = NULL, **our_env = NULL, **fd_names = NULL; |
5686391b | 1412 | _cleanup_(sd_event_source_unrefp) sd_event_source *exec_fd_source = NULL; |
25b583d7 | 1413 | size_t n_socket_fds = 0, n_storage_fds = 0, n_env = 0; |
5686391b | 1414 | _cleanup_close_ int exec_fd = -1; |
3c7416b6 LP |
1415 | _cleanup_free_ int *fds = NULL; |
1416 | pid_t pid; | |
8dd4c05b LP |
1417 | int r; |
1418 | ||
034c6ed7 LP |
1419 | assert(s); |
1420 | assert(c); | |
1421 | assert(_pid); | |
1422 | ||
78f93209 | 1423 | r = unit_prepare_exec(UNIT(s)); /* This realizes the cgroup, among other things */ |
3c7416b6 LP |
1424 | if (r < 0) |
1425 | return r; | |
1426 | ||
9c1a61ad LP |
1427 | if (flags & EXEC_IS_CONTROL) { |
1428 | /* If this is a control process, mask the permissions/chroot application if this is requested. */ | |
1429 | if (s->permissions_start_only) | |
1703fa41 | 1430 | exec_params.flags &= ~EXEC_APPLY_SANDBOXING; |
9c1a61ad LP |
1431 | if (s->root_directory_start_only) |
1432 | exec_params.flags &= ~EXEC_APPLY_CHROOT; | |
1433 | } | |
1434 | ||
c39f1ce2 | 1435 | if ((flags & EXEC_PASS_FDS) || |
6cf6bbc2 LP |
1436 | s->exec_context.std_input == EXEC_INPUT_SOCKET || |
1437 | s->exec_context.std_output == EXEC_OUTPUT_SOCKET || | |
1438 | s->exec_context.std_error == EXEC_OUTPUT_SOCKET) { | |
1439 | ||
25b583d7 | 1440 | r = service_collect_fds(s, &fds, &fd_names, &n_socket_fds, &n_storage_fds); |
8dd4c05b | 1441 | if (r < 0) |
36c16a7c | 1442 | return r; |
6cf6bbc2 | 1443 | |
25b583d7 | 1444 | log_unit_debug(UNIT(s), "Passing %zu fds to service", n_socket_fds + n_storage_fds); |
4f2d528d | 1445 | } |
44d8db9e | 1446 | |
5686391b LP |
1447 | if (!FLAGS_SET(flags, EXEC_IS_CONTROL) && s->type == SERVICE_EXEC) { |
1448 | assert(!s->exec_fd_event_source); | |
1449 | ||
1450 | r = service_allocate_exec_fd(s, &exec_fd_source, &exec_fd); | |
1451 | if (r < 0) | |
1452 | return r; | |
1453 | } | |
1454 | ||
36c16a7c LP |
1455 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), timeout)); |
1456 | if (r < 0) | |
1457 | return r; | |
034c6ed7 | 1458 | |
dcf3c3c3 | 1459 | our_env = new0(char*, 10); |
36c16a7c LP |
1460 | if (!our_env) |
1461 | return -ENOMEM; | |
c952c6ec | 1462 | |
6375bd20 | 1463 | if (service_exec_needs_notify_socket(s, flags)) |
36c16a7c LP |
1464 | if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) |
1465 | return -ENOMEM; | |
c952c6ec | 1466 | |
2105e76a | 1467 | if (s->main_pid > 0) |
36c16a7c LP |
1468 | if (asprintf(our_env + n_env++, "MAINPID="PID_FMT, s->main_pid) < 0) |
1469 | return -ENOMEM; | |
2105e76a | 1470 | |
c39f1ce2 | 1471 | if (MANAGER_IS_USER(UNIT(s)->manager)) |
df0ff127 | 1472 | if (asprintf(our_env + n_env++, "MANAGERPID="PID_FMT, getpid_cached()) < 0) |
36c16a7c | 1473 | return -ENOMEM; |
97ae63e2 | 1474 | |
dcf3c3c3 LP |
1475 | if (s->pid_file) |
1476 | if (asprintf(our_env + n_env++, "PIDFILE=%s", s->pid_file) < 0) | |
1477 | return -ENOMEM; | |
1478 | ||
8dd4c05b | 1479 | if (s->socket_fd >= 0) { |
3b1c5241 SL |
1480 | union sockaddr_union sa; |
1481 | socklen_t salen = sizeof(sa); | |
1482 | ||
f56e7bfe LP |
1483 | /* If this is a per-connection service instance, let's set $REMOTE_ADDR and $REMOTE_PORT to something |
1484 | * useful. Note that we do this only when we are still connected at this point in time, which we might | |
1485 | * very well not be. Hence we ignore all errors when retrieving peer information (as that might result | |
1486 | * in ENOTCONN), and just use whate we can use. */ | |
f2dbd059 | 1487 | |
f56e7bfe LP |
1488 | if (getpeername(s->socket_fd, &sa.sa, &salen) >= 0 && |
1489 | IN_SET(sa.sa.sa_family, AF_INET, AF_INET6, AF_VSOCK)) { | |
3b1c5241 | 1490 | |
3b1c5241 SL |
1491 | _cleanup_free_ char *addr = NULL; |
1492 | char *t; | |
882ac6e7 | 1493 | unsigned port; |
3b1c5241 SL |
1494 | |
1495 | r = sockaddr_pretty(&sa.sa, salen, true, false, &addr); | |
1496 | if (r < 0) | |
36c16a7c | 1497 | return r; |
3b1c5241 SL |
1498 | |
1499 | t = strappend("REMOTE_ADDR=", addr); | |
36c16a7c LP |
1500 | if (!t) |
1501 | return -ENOMEM; | |
3b1c5241 SL |
1502 | our_env[n_env++] = t; |
1503 | ||
882ac6e7 SH |
1504 | r = sockaddr_port(&sa.sa, &port); |
1505 | if (r < 0) | |
1506 | return r; | |
3b1c5241 | 1507 | |
36c16a7c LP |
1508 | if (asprintf(&t, "REMOTE_PORT=%u", port) < 0) |
1509 | return -ENOMEM; | |
3b1c5241 SL |
1510 | our_env[n_env++] = t; |
1511 | } | |
1512 | } | |
1513 | ||
136dc4c4 LP |
1514 | if (flags & EXEC_SETENV_RESULT) { |
1515 | if (asprintf(our_env + n_env++, "SERVICE_RESULT=%s", service_result_to_string(s->result)) < 0) | |
1516 | return -ENOMEM; | |
1517 | ||
1518 | if (s->main_exec_status.pid > 0 && | |
1519 | dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) { | |
1520 | if (asprintf(our_env + n_env++, "EXIT_CODE=%s", sigchld_code_to_string(s->main_exec_status.code)) < 0) | |
1521 | return -ENOMEM; | |
1522 | ||
1523 | if (s->main_exec_status.code == CLD_EXITED) | |
1524 | r = asprintf(our_env + n_env++, "EXIT_STATUS=%i", s->main_exec_status.status); | |
1525 | else | |
1526 | r = asprintf(our_env + n_env++, "EXIT_STATUS=%s", signal_to_string(s->main_exec_status.status)); | |
1527 | if (r < 0) | |
1528 | return -ENOMEM; | |
1529 | } | |
1530 | } | |
1531 | ||
1ad6e8b3 LP |
1532 | r = unit_set_exec_params(UNIT(s), &exec_params); |
1533 | if (r < 0) | |
1534 | return r; | |
3536f49e YW |
1535 | |
1536 | final_env = strv_env_merge(2, exec_params.environment, our_env, NULL); | |
36c16a7c LP |
1537 | if (!final_env) |
1538 | return -ENOMEM; | |
c952c6ec | 1539 | |
ac647978 LP |
1540 | /* System D-Bus needs nss-systemd disabled, so that we don't deadlock */ |
1541 | SET_FLAG(exec_params.flags, EXEC_NSS_BYPASS_BUS, | |
1542 | MANAGER_IS_SYSTEM(UNIT(s)->manager) && unit_has_name(UNIT(s), SPECIAL_DBUS_SERVICE)); | |
4ad49000 | 1543 | |
b9c04eaf | 1544 | strv_free_and_replace(exec_params.environment, final_env); |
9fa95f85 | 1545 | exec_params.fds = fds; |
8dd4c05b | 1546 | exec_params.fd_names = fd_names; |
9b141911 | 1547 | exec_params.n_socket_fds = n_socket_fds; |
25b583d7 | 1548 | exec_params.n_storage_fds = n_storage_fds; |
34b3f625 | 1549 | exec_params.watchdog_usec = service_get_watchdog_usec(s); |
a34ceba6 | 1550 | exec_params.selinux_context_net = s->socket_fd_selinux_context_net; |
9fa95f85 DM |
1551 | if (s->type == SERVICE_IDLE) |
1552 | exec_params.idle_pipe = UNIT(s)->manager->idle_pipe; | |
a34ceba6 LP |
1553 | exec_params.stdin_fd = s->stdin_fd; |
1554 | exec_params.stdout_fd = s->stdout_fd; | |
1555 | exec_params.stderr_fd = s->stderr_fd; | |
5686391b | 1556 | exec_params.exec_fd = exec_fd; |
9fa95f85 | 1557 | |
f2341e0a LP |
1558 | r = exec_spawn(UNIT(s), |
1559 | c, | |
9e2f7c11 | 1560 | &s->exec_context, |
9fa95f85 | 1561 | &exec_params, |
613b411c | 1562 | s->exec_runtime, |
29206d46 | 1563 | &s->dynamic_creds, |
9e2f7c11 | 1564 | &pid); |
9e2f7c11 | 1565 | if (r < 0) |
36c16a7c | 1566 | return r; |
034c6ed7 | 1567 | |
5686391b LP |
1568 | s->exec_fd_event_source = TAKE_PTR(exec_fd_source); |
1569 | s->exec_fd_hot = false; | |
1570 | ||
f75f613d FB |
1571 | r = unit_watch_pid(UNIT(s), pid, true); |
1572 | if (r < 0) | |
36c16a7c | 1573 | return r; |
034c6ed7 LP |
1574 | |
1575 | *_pid = pid; | |
1576 | ||
5cb5a6ff | 1577 | return 0; |
034c6ed7 LP |
1578 | } |
1579 | ||
80876c20 LP |
1580 | static int main_pid_good(Service *s) { |
1581 | assert(s); | |
1582 | ||
51894d70 | 1583 | /* Returns 0 if the pid is dead, > 0 if it is good, < 0 if we don't know */ |
80876c20 | 1584 | |
fc08079e | 1585 | /* If we know the pid file, then let's just check if it is |
80876c20 | 1586 | * still valid */ |
6dfa5494 LP |
1587 | if (s->main_pid_known) { |
1588 | ||
1589 | /* If it's an alien child let's check if it is still | |
1590 | * alive ... */ | |
62220cf7 | 1591 | if (s->main_pid_alien && s->main_pid > 0) |
9f5650ae | 1592 | return pid_is_alive(s->main_pid); |
6dfa5494 LP |
1593 | |
1594 | /* .. otherwise assume we'll get a SIGCHLD for it, | |
1595 | * which we really should wait for to collect exit | |
1596 | * status and code */ | |
80876c20 | 1597 | return s->main_pid > 0; |
6dfa5494 | 1598 | } |
80876c20 LP |
1599 | |
1600 | /* We don't know the pid */ | |
1601 | return -EAGAIN; | |
1602 | } | |
1603 | ||
019be286 | 1604 | static int control_pid_good(Service *s) { |
80876c20 LP |
1605 | assert(s); |
1606 | ||
07697d7e LP |
1607 | /* Returns 0 if the control PID is dead, > 0 if it is good. We never actually return < 0 here, but in order to |
1608 | * make this function as similar as possible to main_pid_good() and cgroup_good(), we pretend that < 0 also | |
1609 | * means: we can't figure it out. */ | |
1610 | ||
80876c20 LP |
1611 | return s->control_pid > 0; |
1612 | } | |
1613 | ||
1614 | static int cgroup_good(Service *s) { | |
1615 | int r; | |
1616 | ||
1617 | assert(s); | |
1618 | ||
07697d7e LP |
1619 | /* Returns 0 if the cgroup is empty or doesn't exist, > 0 if it is exists and is populated, < 0 if we can't |
1620 | * figure it out */ | |
1621 | ||
4ad49000 LP |
1622 | if (!UNIT(s)->cgroup_path) |
1623 | return 0; | |
1624 | ||
6f883237 | 1625 | r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, UNIT(s)->cgroup_path); |
117dcc57 | 1626 | if (r < 0) |
80876c20 LP |
1627 | return r; |
1628 | ||
b13ddbbc | 1629 | return r == 0; |
80876c20 LP |
1630 | } |
1631 | ||
a509f0e6 LP |
1632 | static bool service_shall_restart(Service *s) { |
1633 | assert(s); | |
1634 | ||
1635 | /* Don't restart after manual stops */ | |
1636 | if (s->forbid_restart) | |
1637 | return false; | |
1638 | ||
1639 | /* Never restart if this is configured as special exception */ | |
1640 | if (exit_status_set_test(&s->restart_prevent_status, s->main_exec_status.code, s->main_exec_status.status)) | |
1641 | return false; | |
1642 | ||
1643 | /* Restart if the exit code/status are configured as restart triggers */ | |
1644 | if (exit_status_set_test(&s->restart_force_status, s->main_exec_status.code, s->main_exec_status.status)) | |
1645 | return true; | |
1646 | ||
1647 | switch (s->restart) { | |
1648 | ||
1649 | case SERVICE_RESTART_NO: | |
1650 | return false; | |
1651 | ||
1652 | case SERVICE_RESTART_ALWAYS: | |
1653 | return true; | |
1654 | ||
1655 | case SERVICE_RESTART_ON_SUCCESS: | |
1656 | return s->result == SERVICE_SUCCESS; | |
1657 | ||
1658 | case SERVICE_RESTART_ON_FAILURE: | |
1659 | return s->result != SERVICE_SUCCESS; | |
1660 | ||
1661 | case SERVICE_RESTART_ON_ABNORMAL: | |
1662 | return !IN_SET(s->result, SERVICE_SUCCESS, SERVICE_FAILURE_EXIT_CODE); | |
1663 | ||
1664 | case SERVICE_RESTART_ON_WATCHDOG: | |
1665 | return s->result == SERVICE_FAILURE_WATCHDOG; | |
1666 | ||
1667 | case SERVICE_RESTART_ON_ABORT: | |
1668 | return IN_SET(s->result, SERVICE_FAILURE_SIGNAL, SERVICE_FAILURE_CORE_DUMP); | |
1669 | ||
1670 | default: | |
1671 | assert_not_reached("unknown restart setting"); | |
1672 | } | |
1673 | } | |
1674 | ||
deb4e708 MK |
1675 | static bool service_will_restart(Unit *u) { |
1676 | Service *s = SERVICE(u); | |
1677 | ||
53f47dfc YW |
1678 | assert(s); |
1679 | ||
deb4e708 MK |
1680 | if (s->will_auto_restart) |
1681 | return true; | |
53f47dfc YW |
1682 | if (s->state == SERVICE_AUTO_RESTART) |
1683 | return true; | |
1684 | if (!UNIT(s)->job) | |
1685 | return false; | |
1686 | if (UNIT(s)->job->type == JOB_START) | |
1687 | return true; | |
2ad2e41a | 1688 | |
53f47dfc YW |
1689 | return false; |
1690 | } | |
1691 | ||
f42806df | 1692 | static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) { |
034c6ed7 | 1693 | int r; |
0f52f8e5 | 1694 | |
034c6ed7 LP |
1695 | assert(s); |
1696 | ||
0f52f8e5 LP |
1697 | /* If there's a stop job queued before we enter the DEAD state, we shouldn't act on Restart=, in order to not |
1698 | * undo what has already been enqueued. */ | |
1699 | if (unit_stop_pending(UNIT(s))) | |
1700 | allow_restart = false; | |
1701 | ||
a0fef983 | 1702 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1703 | s->result = f; |
034c6ed7 | 1704 | |
aac99f30 | 1705 | unit_log_result(UNIT(s), s->result == SERVICE_SUCCESS, service_result_to_string(s->result)); |
ed77d407 | 1706 | |
deb4e708 MK |
1707 | if (allow_restart && service_shall_restart(s)) |
1708 | s->will_auto_restart = true; | |
1709 | ||
7eb2a8a1 LP |
1710 | /* Make sure service_release_resources() doesn't destroy our FD store, while we are changing through |
1711 | * SERVICE_FAILED/SERVICE_DEAD before entering into SERVICE_AUTO_RESTART. */ | |
1712 | s->n_keep_fd_store ++; | |
1713 | ||
0c7f15b3 MS |
1714 | service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD); |
1715 | ||
deb4e708 MK |
1716 | if (s->will_auto_restart) { |
1717 | s->will_auto_restart = false; | |
034c6ed7 | 1718 | |
36c16a7c | 1719 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->restart_usec)); |
7eb2a8a1 LP |
1720 | if (r < 0) { |
1721 | s->n_keep_fd_store--; | |
034c6ed7 | 1722 | goto fail; |
7eb2a8a1 | 1723 | } |
034c6ed7 LP |
1724 | |
1725 | service_set_state(s, SERVICE_AUTO_RESTART); | |
7a0019d3 LP |
1726 | } else |
1727 | /* If we shan't restart, then flush out the restart counter. But don't do that immediately, so that the | |
1728 | * user can still introspect the counter. Do so on the next start. */ | |
1729 | s->flush_n_restarts = true; | |
034c6ed7 | 1730 | |
7eb2a8a1 LP |
1731 | /* The new state is in effect, let's decrease the fd store ref counter again. Let's also readd us to the GC |
1732 | * queue, so that the fd store is possibly gc'ed again */ | |
1733 | s->n_keep_fd_store--; | |
1734 | unit_add_to_gc_queue(UNIT(s)); | |
1735 | ||
f2341e0a | 1736 | /* The next restart might not be a manual stop, hence reset the flag indicating manual stops */ |
47342320 LP |
1737 | s->forbid_restart = false; |
1738 | ||
e66cf1a3 | 1739 | /* We want fresh tmpdirs in case service is started again immediately */ |
e8a565cb | 1740 | s->exec_runtime = exec_runtime_unref(s->exec_runtime, true); |
c17ec25e | 1741 | |
53f47dfc | 1742 | if (s->exec_context.runtime_directory_preserve_mode == EXEC_PRESERVE_NO || |
deb4e708 | 1743 | (s->exec_context.runtime_directory_preserve_mode == EXEC_PRESERVE_RESTART && !service_will_restart(UNIT(s)))) |
53f47dfc | 1744 | /* Also, remove the runtime directory */ |
3536f49e | 1745 | exec_context_destroy_runtime_directory(&s->exec_context, UNIT(s)->manager->prefix[EXEC_DIRECTORY_RUNTIME]); |
e66cf1a3 | 1746 | |
00d9ef85 LP |
1747 | /* Get rid of the IPC bits of the user */ |
1748 | unit_unref_uid_gid(UNIT(s), true); | |
1749 | ||
29206d46 LP |
1750 | /* Release the user, and destroy it if we are the only remaining owner */ |
1751 | dynamic_creds_destroy(&s->dynamic_creds); | |
1752 | ||
9285c9ff LN |
1753 | /* Try to delete the pid file. At this point it will be |
1754 | * out-of-date, and some software might be confused by it, so | |
1755 | * let's remove it. */ | |
1756 | if (s->pid_file) | |
fabab190 | 1757 | (void) unlink(s->pid_file); |
9285c9ff | 1758 | |
6f765baf LP |
1759 | /* Reset TTY ownership if necessary */ |
1760 | exec_context_revert_tty(&s->exec_context); | |
1761 | ||
034c6ed7 LP |
1762 | return; |
1763 | ||
1764 | fail: | |
f2341e0a | 1765 | log_unit_warning_errno(UNIT(s), r, "Failed to run install restart timer: %m"); |
f42806df | 1766 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); |
034c6ed7 LP |
1767 | } |
1768 | ||
f42806df | 1769 | static void service_enter_stop_post(Service *s, ServiceResult f) { |
034c6ed7 LP |
1770 | int r; |
1771 | assert(s); | |
1772 | ||
a0fef983 | 1773 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1774 | s->result = f; |
034c6ed7 | 1775 | |
5e94833f | 1776 | service_unwatch_control_pid(s); |
50be4f4a | 1777 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
5e94833f | 1778 | |
117dcc57 ZJS |
1779 | s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST]; |
1780 | if (s->control_command) { | |
867b3b7d LP |
1781 | s->control_command_id = SERVICE_EXEC_STOP_POST; |
1782 | ||
ecedd90f LP |
1783 | r = service_spawn(s, |
1784 | s->control_command, | |
21b2ce39 | 1785 | s->timeout_stop_usec, |
78f93209 | 1786 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_IS_CONTROL|EXEC_SETENV_RESULT|EXEC_CONTROL_CGROUP, |
ecedd90f LP |
1787 | &s->control_pid); |
1788 | if (r < 0) | |
034c6ed7 LP |
1789 | goto fail; |
1790 | ||
80876c20 LP |
1791 | service_set_state(s, SERVICE_STOP_POST); |
1792 | } else | |
ac84d1fb | 1793 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
1794 | |
1795 | return; | |
1796 | ||
1797 | fail: | |
f2341e0a | 1798 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop-post' task: %m"); |
f42806df | 1799 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1800 | } |
1801 | ||
4940c0b0 LP |
1802 | static int state_to_kill_operation(ServiceState state) { |
1803 | switch (state) { | |
1804 | ||
c87700a1 AZ |
1805 | case SERVICE_STOP_WATCHDOG: |
1806 | return KILL_WATCHDOG; | |
4940c0b0 LP |
1807 | |
1808 | case SERVICE_STOP_SIGTERM: | |
1809 | case SERVICE_FINAL_SIGTERM: | |
1810 | return KILL_TERMINATE; | |
1811 | ||
1812 | case SERVICE_STOP_SIGKILL: | |
1813 | case SERVICE_FINAL_SIGKILL: | |
1814 | return KILL_KILL; | |
1815 | ||
1816 | default: | |
1817 | return _KILL_OPERATION_INVALID; | |
1818 | } | |
1819 | } | |
1820 | ||
f42806df | 1821 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) { |
034c6ed7 | 1822 | int r; |
034c6ed7 LP |
1823 | |
1824 | assert(s); | |
1825 | ||
a0fef983 | 1826 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1827 | s->result = f; |
034c6ed7 | 1828 | |
50be4f4a LP |
1829 | /* Before sending any signal, make sure we track all members of this cgroup */ |
1830 | (void) unit_watch_all_pids(UNIT(s)); | |
1831 | ||
1832 | /* Also, enqueue a job that we recheck all our PIDs a bit later, given that it's likely some processes have | |
1833 | * died now */ | |
1834 | (void) unit_enqueue_rewatch_pids(UNIT(s)); | |
a911bb9a | 1835 | |
cd2086fe LP |
1836 | r = unit_kill_context( |
1837 | UNIT(s), | |
1838 | &s->kill_context, | |
4940c0b0 | 1839 | state_to_kill_operation(state), |
cd2086fe LP |
1840 | s->main_pid, |
1841 | s->control_pid, | |
1842 | s->main_pid_alien); | |
1843 | if (r < 0) | |
1844 | goto fail; | |
034c6ed7 | 1845 | |
cd2086fe | 1846 | if (r > 0) { |
36c16a7c LP |
1847 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_stop_usec)); |
1848 | if (r < 0) | |
1849 | goto fail; | |
d6ea93e3 | 1850 | |
80876c20 | 1851 | service_set_state(s, state); |
c87700a1 | 1852 | } else if (IN_SET(state, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM) && s->kill_context.send_sigkill) |
ac84d1fb | 1853 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_SUCCESS); |
c87700a1 | 1854 | else if (IN_SET(state, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 1855 | service_enter_stop_post(s, SERVICE_SUCCESS); |
1db0db4b | 1856 | else if (state == SERVICE_FINAL_SIGTERM && s->kill_context.send_sigkill) |
ac84d1fb | 1857 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_SUCCESS); |
80876c20 | 1858 | else |
f42806df | 1859 | service_enter_dead(s, SERVICE_SUCCESS, true); |
034c6ed7 LP |
1860 | |
1861 | return; | |
1862 | ||
1863 | fail: | |
f2341e0a | 1864 | log_unit_warning_errno(UNIT(s), r, "Failed to kill processes: %m"); |
034c6ed7 | 1865 | |
c87700a1 | 1866 | if (IN_SET(state, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 1867 | service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES); |
034c6ed7 | 1868 | else |
f42806df | 1869 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
034c6ed7 LP |
1870 | } |
1871 | ||
308d72dc LP |
1872 | static void service_enter_stop_by_notify(Service *s) { |
1873 | assert(s); | |
1874 | ||
50be4f4a | 1875 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
308d72dc | 1876 | |
36c16a7c | 1877 | service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_stop_usec)); |
308d72dc | 1878 | |
6041a7ee MS |
1879 | /* The service told us it's stopping, so it's as if we SIGTERM'd it. */ |
1880 | service_set_state(s, SERVICE_STOP_SIGTERM); | |
308d72dc LP |
1881 | } |
1882 | ||
f42806df | 1883 | static void service_enter_stop(Service *s, ServiceResult f) { |
034c6ed7 | 1884 | int r; |
5925dd3c | 1885 | |
034c6ed7 LP |
1886 | assert(s); |
1887 | ||
a0fef983 | 1888 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1889 | s->result = f; |
034c6ed7 | 1890 | |
5e94833f | 1891 | service_unwatch_control_pid(s); |
50be4f4a | 1892 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
5e94833f | 1893 | |
117dcc57 ZJS |
1894 | s->control_command = s->exec_command[SERVICE_EXEC_STOP]; |
1895 | if (s->control_command) { | |
867b3b7d LP |
1896 | s->control_command_id = SERVICE_EXEC_STOP; |
1897 | ||
ecedd90f LP |
1898 | r = service_spawn(s, |
1899 | s->control_command, | |
21b2ce39 | 1900 | s->timeout_stop_usec, |
78f93209 | 1901 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_SETENV_RESULT|EXEC_CONTROL_CGROUP, |
ecedd90f LP |
1902 | &s->control_pid); |
1903 | if (r < 0) | |
034c6ed7 LP |
1904 | goto fail; |
1905 | ||
80876c20 LP |
1906 | service_set_state(s, SERVICE_STOP); |
1907 | } else | |
f42806df | 1908 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
1909 | |
1910 | return; | |
1911 | ||
1912 | fail: | |
f2341e0a | 1913 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop' task: %m"); |
f42806df | 1914 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1915 | } |
1916 | ||
957c3cf9 LP |
1917 | static bool service_good(Service *s) { |
1918 | int main_pid_ok; | |
1919 | assert(s); | |
1920 | ||
1921 | if (s->type == SERVICE_DBUS && !s->bus_name_good) | |
1922 | return false; | |
1923 | ||
1924 | main_pid_ok = main_pid_good(s); | |
1925 | if (main_pid_ok > 0) /* It's alive */ | |
1926 | return true; | |
1927 | if (main_pid_ok == 0) /* It's dead */ | |
1928 | return false; | |
1929 | ||
1930 | /* OK, we don't know anything about the main PID, maybe | |
1931 | * because there is none. Let's check the control group | |
1932 | * instead. */ | |
1933 | ||
1934 | return cgroup_good(s) != 0; | |
1935 | } | |
1936 | ||
f42806df | 1937 | static void service_enter_running(Service *s, ServiceResult f) { |
80876c20 LP |
1938 | assert(s); |
1939 | ||
a0fef983 | 1940 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1941 | s->result = f; |
80876c20 | 1942 | |
089b64d5 LP |
1943 | service_unwatch_control_pid(s); |
1944 | ||
ec5b1452 LP |
1945 | if (s->result != SERVICE_SUCCESS) |
1946 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); | |
1947 | else if (service_good(s)) { | |
308d72dc | 1948 | |
ec5b1452 | 1949 | /* If there are any queued up sd_notify() notifications, process them now */ |
308d72dc LP |
1950 | if (s->notify_state == NOTIFY_RELOADING) |
1951 | service_enter_reload_by_notify(s); | |
1952 | else if (s->notify_state == NOTIFY_STOPPING) | |
1953 | service_enter_stop_by_notify(s); | |
36c16a7c | 1954 | else { |
308d72dc | 1955 | service_set_state(s, SERVICE_RUNNING); |
36c16a7c LP |
1956 | service_arm_timer(s, usec_add(UNIT(s)->active_enter_timestamp.monotonic, s->runtime_max_usec)); |
1957 | } | |
308d72dc | 1958 | |
ec5b1452 | 1959 | } else if (s->remain_after_exit) |
80876c20 LP |
1960 | service_set_state(s, SERVICE_EXITED); |
1961 | else | |
f42806df | 1962 | service_enter_stop(s, SERVICE_SUCCESS); |
80876c20 LP |
1963 | } |
1964 | ||
034c6ed7 LP |
1965 | static void service_enter_start_post(Service *s) { |
1966 | int r; | |
1967 | assert(s); | |
1968 | ||
5e94833f | 1969 | service_unwatch_control_pid(s); |
842129f5 | 1970 | service_reset_watchdog(s); |
bb242b7b | 1971 | |
117dcc57 ZJS |
1972 | s->control_command = s->exec_command[SERVICE_EXEC_START_POST]; |
1973 | if (s->control_command) { | |
867b3b7d LP |
1974 | s->control_command_id = SERVICE_EXEC_START_POST; |
1975 | ||
ecedd90f LP |
1976 | r = service_spawn(s, |
1977 | s->control_command, | |
21b2ce39 | 1978 | s->timeout_start_usec, |
78f93209 | 1979 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_CONTROL_CGROUP, |
ecedd90f LP |
1980 | &s->control_pid); |
1981 | if (r < 0) | |
034c6ed7 LP |
1982 | goto fail; |
1983 | ||
80876c20 LP |
1984 | service_set_state(s, SERVICE_START_POST); |
1985 | } else | |
f42806df | 1986 | service_enter_running(s, SERVICE_SUCCESS); |
034c6ed7 LP |
1987 | |
1988 | return; | |
1989 | ||
1990 | fail: | |
f2341e0a | 1991 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-post' task: %m"); |
f42806df | 1992 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1993 | } |
1994 | ||
e9a4f676 | 1995 | static void service_kill_control_process(Service *s) { |
a6951a50 | 1996 | int r; |
4ad49000 | 1997 | |
a6951a50 LP |
1998 | assert(s); |
1999 | ||
e9a4f676 LP |
2000 | if (s->control_pid <= 0) |
2001 | return; | |
4ad49000 | 2002 | |
e9a4f676 LP |
2003 | r = kill_and_sigcont(s->control_pid, SIGKILL); |
2004 | if (r < 0) { | |
2005 | _cleanup_free_ char *comm = NULL; | |
a6951a50 | 2006 | |
e9a4f676 | 2007 | (void) get_process_comm(s->control_pid, &comm); |
a6951a50 | 2008 | |
e9a4f676 LP |
2009 | log_unit_debug_errno(UNIT(s), r, "Failed to kill control process " PID_FMT " (%s), ignoring: %m", |
2010 | s->control_pid, strna(comm)); | |
a6951a50 | 2011 | } |
4ad49000 LP |
2012 | } |
2013 | ||
c53d2d54 DB |
2014 | static int service_adverse_to_leftover_processes(Service *s) { |
2015 | assert(s); | |
2016 | ||
2017 | /* KillMode=mixed and control group are used to indicate that all process should be killed off. | |
2018 | * SendSIGKILL is used for services that require a clean shutdown. These are typically database | |
2019 | * service where a SigKilled process would result in a lengthy recovery and who's shutdown or | |
2020 | * startup time is quite variable (so Timeout settings aren't of use). | |
2021 | * | |
2022 | * Here we take these two factors and refuse to start a service if there are existing processes | |
2023 | * within a control group. Databases, while generally having some protection against multiple | |
2024 | * instances running, lets not stress the rigor of these. Also ExecStartPre parts of the service | |
2025 | * aren't as rigoriously written to protect aganst against multiple use. */ | |
2026 | if (unit_warn_leftover_processes(UNIT(s)) && | |
2027 | IN_SET(s->kill_context.kill_mode, KILL_MIXED, KILL_CONTROL_GROUP) && | |
2028 | !s->kill_context.send_sigkill) { | |
2029 | 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"); | |
2030 | } | |
2031 | return 0; | |
2032 | } | |
2033 | ||
034c6ed7 | 2034 | static void service_enter_start(Service *s) { |
4ad49000 | 2035 | ExecCommand *c; |
36c16a7c | 2036 | usec_t timeout; |
034c6ed7 LP |
2037 | pid_t pid; |
2038 | int r; | |
2039 | ||
2040 | assert(s); | |
2041 | ||
41efeaec LP |
2042 | service_unwatch_control_pid(s); |
2043 | service_unwatch_main_pid(s); | |
80876c20 | 2044 | |
c53d2d54 DB |
2045 | r = service_adverse_to_leftover_processes(s); |
2046 | if (r < 0) | |
2047 | goto fail; | |
a4634b21 | 2048 | |
867b3b7d LP |
2049 | if (s->type == SERVICE_FORKING) { |
2050 | s->control_command_id = SERVICE_EXEC_START; | |
2051 | c = s->control_command = s->exec_command[SERVICE_EXEC_START]; | |
2052 | ||
2053 | s->main_command = NULL; | |
2054 | } else { | |
2055 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
2056 | s->control_command = NULL; | |
2057 | ||
2058 | c = s->main_command = s->exec_command[SERVICE_EXEC_START]; | |
2059 | } | |
34e9ba66 | 2060 | |
96fb8242 | 2061 | if (!c) { |
47fffb35 LP |
2062 | if (s->type != SERVICE_ONESHOT) { |
2063 | /* There's no command line configured for the main command? Hmm, that is strange. This can only | |
2064 | * happen if the configuration changes at runtime. In this case, let's enter a failure | |
2065 | * state. */ | |
b8b846d7 | 2066 | log_unit_error(UNIT(s), "There's no 'start' task anymore we could start."); |
47fffb35 LP |
2067 | r = -ENXIO; |
2068 | goto fail; | |
2069 | } | |
2070 | ||
ef5ae8e7 ZJS |
2071 | /* We force a fake state transition here. Otherwise, the unit would go directly from |
2072 | * SERVICE_DEAD to SERVICE_DEAD without SERVICE_ACTIVATING or SERVICE_ACTIVE | |
2073 | * inbetween. This way we can later trigger actions that depend on the state | |
2074 | * transition, including SuccessAction=. */ | |
2075 | service_set_state(s, SERVICE_START); | |
2076 | ||
96fb8242 LP |
2077 | service_enter_start_post(s); |
2078 | return; | |
2079 | } | |
2080 | ||
36c16a7c LP |
2081 | if (IN_SET(s->type, SERVICE_SIMPLE, SERVICE_IDLE)) |
2082 | /* For simple + idle this is the main process. We don't apply any timeout here, but | |
2083 | * service_enter_running() will later apply the .runtime_max_usec timeout. */ | |
2084 | timeout = USEC_INFINITY; | |
2085 | else | |
2086 | timeout = s->timeout_start_usec; | |
2087 | ||
ecedd90f LP |
2088 | r = service_spawn(s, |
2089 | c, | |
36c16a7c | 2090 | timeout, |
1703fa41 | 2091 | EXEC_PASS_FDS|EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_SET_WATCHDOG, |
ecedd90f LP |
2092 | &pid); |
2093 | if (r < 0) | |
034c6ed7 LP |
2094 | goto fail; |
2095 | ||
36c16a7c | 2096 | if (IN_SET(s->type, SERVICE_SIMPLE, SERVICE_IDLE)) { |
034c6ed7 LP |
2097 | /* For simple services we immediately start |
2098 | * the START_POST binaries. */ | |
2099 | ||
5925dd3c | 2100 | service_set_main_pid(s, pid); |
034c6ed7 LP |
2101 | service_enter_start_post(s); |
2102 | ||
2103 | } else if (s->type == SERVICE_FORKING) { | |
2104 | ||
2105 | /* For forking services we wait until the start | |
2106 | * process exited. */ | |
2107 | ||
e55224ca | 2108 | s->control_pid = pid; |
80876c20 LP |
2109 | service_set_state(s, SERVICE_START); |
2110 | ||
5686391b | 2111 | } else if (IN_SET(s->type, SERVICE_ONESHOT, SERVICE_DBUS, SERVICE_NOTIFY, SERVICE_EXEC)) { |
7d55e835 | 2112 | |
5686391b | 2113 | /* For oneshot services we wait until the start process exited, too, but it is our main process. */ |
7d55e835 | 2114 | |
5686391b LP |
2115 | /* For D-Bus services we know the main pid right away, but wait for the bus name to appear on the |
2116 | * bus. 'notify' and 'exec' services are similar. */ | |
05e343b7 | 2117 | |
5925dd3c | 2118 | service_set_main_pid(s, pid); |
80876c20 | 2119 | service_set_state(s, SERVICE_START); |
034c6ed7 LP |
2120 | } else |
2121 | assert_not_reached("Unknown service type"); | |
2122 | ||
2123 | return; | |
2124 | ||
2125 | fail: | |
f2341e0a | 2126 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start' task: %m"); |
c3fda31d | 2127 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
2128 | } |
2129 | ||
2130 | static void service_enter_start_pre(Service *s) { | |
2131 | int r; | |
2132 | ||
2133 | assert(s); | |
2134 | ||
5e94833f LP |
2135 | service_unwatch_control_pid(s); |
2136 | ||
117dcc57 ZJS |
2137 | s->control_command = s->exec_command[SERVICE_EXEC_START_PRE]; |
2138 | if (s->control_command) { | |
8f53a7b8 | 2139 | |
c53d2d54 DB |
2140 | r = service_adverse_to_leftover_processes(s); |
2141 | if (r < 0) | |
2142 | goto fail; | |
a4634b21 | 2143 | |
867b3b7d LP |
2144 | s->control_command_id = SERVICE_EXEC_START_PRE; |
2145 | ||
ecedd90f LP |
2146 | r = service_spawn(s, |
2147 | s->control_command, | |
21b2ce39 | 2148 | s->timeout_start_usec, |
1703fa41 | 2149 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_APPLY_TTY_STDIN, |
ecedd90f LP |
2150 | &s->control_pid); |
2151 | if (r < 0) | |
034c6ed7 LP |
2152 | goto fail; |
2153 | ||
80876c20 LP |
2154 | service_set_state(s, SERVICE_START_PRE); |
2155 | } else | |
034c6ed7 LP |
2156 | service_enter_start(s); |
2157 | ||
2158 | return; | |
2159 | ||
2160 | fail: | |
f2341e0a | 2161 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-pre' task: %m"); |
f42806df | 2162 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
034c6ed7 LP |
2163 | } |
2164 | ||
2165 | static void service_enter_restart(Service *s) { | |
4afd3348 | 2166 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
034c6ed7 | 2167 | int r; |
398ef8ba | 2168 | |
034c6ed7 LP |
2169 | assert(s); |
2170 | ||
a8bb2e65 LP |
2171 | if (UNIT(s)->job && UNIT(s)->job->type == JOB_STOP) { |
2172 | /* Don't restart things if we are going down anyway */ | |
f2341e0a | 2173 | log_unit_info(UNIT(s), "Stop job pending for unit, delaying automatic restart."); |
2edfa366 | 2174 | |
36c16a7c | 2175 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->restart_usec)); |
a8bb2e65 | 2176 | if (r < 0) |
2edfa366 | 2177 | goto fail; |
feae8adb DW |
2178 | |
2179 | return; | |
2edfa366 LP |
2180 | } |
2181 | ||
48bb5876 DW |
2182 | /* Any units that are bound to this service must also be |
2183 | * restarted. We use JOB_RESTART (instead of the more obvious | |
2184 | * JOB_START) here so that those dependency jobs will be added | |
2185 | * as well. */ | |
50cbaba4 | 2186 | r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_REPLACE, NULL, &error, NULL); |
48bb5876 | 2187 | if (r < 0) |
034c6ed7 LP |
2188 | goto fail; |
2189 | ||
7a0019d3 LP |
2190 | /* Count the jobs we enqueue for restarting. This counter is maintained as long as the unit isn't fully |
2191 | * stopped, i.e. as long as it remains up or remains in auto-start states. The use can reset the counter | |
2192 | * explicitly however via the usual "systemctl reset-failure" logic. */ | |
2193 | s->n_restarts ++; | |
2194 | s->flush_n_restarts = false; | |
2195 | ||
2196 | log_struct(LOG_INFO, | |
2197 | "MESSAGE_ID=" SD_MESSAGE_UNIT_RESTART_SCHEDULED_STR, | |
2198 | LOG_UNIT_ID(UNIT(s)), | |
f1c50bec | 2199 | LOG_UNIT_INVOCATION_ID(UNIT(s)), |
7a0019d3 | 2200 | LOG_UNIT_MESSAGE(UNIT(s), "Scheduled restart job, restart counter is at %u.", s->n_restarts), |
a1230ff9 | 2201 | "N_RESTARTS=%u", s->n_restarts); |
7a0019d3 LP |
2202 | |
2203 | /* Notify clients about changed restart counter */ | |
2204 | unit_add_to_dbus_queue(UNIT(s)); | |
2205 | ||
a8bb2e65 LP |
2206 | /* Note that we stay in the SERVICE_AUTO_RESTART state here, |
2207 | * it will be canceled as part of the service_stop() call that | |
2208 | * is executed as part of JOB_RESTART. */ | |
2209 | ||
034c6ed7 LP |
2210 | return; |
2211 | ||
2212 | fail: | |
f2341e0a | 2213 | log_unit_warning(UNIT(s), "Failed to schedule restart job: %s", bus_error_message(&error, -r)); |
f42806df | 2214 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); |
034c6ed7 LP |
2215 | } |
2216 | ||
308d72dc | 2217 | static void service_enter_reload_by_notify(Service *s) { |
15d167f8 JW |
2218 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
2219 | int r; | |
2220 | ||
308d72dc LP |
2221 | assert(s); |
2222 | ||
36c16a7c | 2223 | service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_start_usec)); |
308d72dc | 2224 | service_set_state(s, SERVICE_RELOAD); |
15d167f8 JW |
2225 | |
2226 | /* service_enter_reload_by_notify is never called during a reload, thus no loops are possible. */ | |
2227 | r = manager_propagate_reload(UNIT(s)->manager, UNIT(s), JOB_FAIL, &error); | |
2228 | if (r < 0) | |
2229 | log_unit_warning(UNIT(s), "Failed to schedule propagation of reload: %s", bus_error_message(&error, -r)); | |
308d72dc LP |
2230 | } |
2231 | ||
034c6ed7 LP |
2232 | static void service_enter_reload(Service *s) { |
2233 | int r; | |
2234 | ||
2235 | assert(s); | |
2236 | ||
5e94833f | 2237 | service_unwatch_control_pid(s); |
95c906ae | 2238 | s->reload_result = SERVICE_SUCCESS; |
5e94833f | 2239 | |
117dcc57 ZJS |
2240 | s->control_command = s->exec_command[SERVICE_EXEC_RELOAD]; |
2241 | if (s->control_command) { | |
867b3b7d LP |
2242 | s->control_command_id = SERVICE_EXEC_RELOAD; |
2243 | ||
ecedd90f LP |
2244 | r = service_spawn(s, |
2245 | s->control_command, | |
21b2ce39 | 2246 | s->timeout_start_usec, |
78f93209 | 2247 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_CONTROL_CGROUP, |
ecedd90f LP |
2248 | &s->control_pid); |
2249 | if (r < 0) | |
034c6ed7 LP |
2250 | goto fail; |
2251 | ||
80876c20 LP |
2252 | service_set_state(s, SERVICE_RELOAD); |
2253 | } else | |
f42806df | 2254 | service_enter_running(s, SERVICE_SUCCESS); |
034c6ed7 LP |
2255 | |
2256 | return; | |
2257 | ||
2258 | fail: | |
f2341e0a | 2259 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'reload' task: %m"); |
f42806df LP |
2260 | s->reload_result = SERVICE_FAILURE_RESOURCES; |
2261 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
2262 | } |
2263 | ||
f42806df | 2264 | static void service_run_next_control(Service *s) { |
36c16a7c | 2265 | usec_t timeout; |
034c6ed7 LP |
2266 | int r; |
2267 | ||
2268 | assert(s); | |
2269 | assert(s->control_command); | |
2270 | assert(s->control_command->command_next); | |
2271 | ||
34e9ba66 | 2272 | assert(s->control_command_id != SERVICE_EXEC_START); |
034c6ed7 | 2273 | |
34e9ba66 | 2274 | s->control_command = s->control_command->command_next; |
5e94833f LP |
2275 | service_unwatch_control_pid(s); |
2276 | ||
36c16a7c LP |
2277 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
2278 | timeout = s->timeout_start_usec; | |
2279 | else | |
2280 | timeout = s->timeout_stop_usec; | |
2281 | ||
ecedd90f LP |
2282 | r = service_spawn(s, |
2283 | s->control_command, | |
36c16a7c | 2284 | timeout, |
1703fa41 | 2285 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL| |
136dc4c4 | 2286 | (IN_SET(s->control_command_id, SERVICE_EXEC_START_PRE, SERVICE_EXEC_STOP_POST) ? EXEC_APPLY_TTY_STDIN : 0)| |
78f93209 LP |
2287 | (IN_SET(s->control_command_id, SERVICE_EXEC_STOP, SERVICE_EXEC_STOP_POST) ? EXEC_SETENV_RESULT : 0)| |
2288 | (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 |
2289 | &s->control_pid); |
2290 | if (r < 0) | |
034c6ed7 LP |
2291 | goto fail; |
2292 | ||
2293 | return; | |
2294 | ||
2295 | fail: | |
f2341e0a | 2296 | log_unit_warning_errno(UNIT(s), r, "Failed to run next control task: %m"); |
034c6ed7 | 2297 | |
4cd9fa81 | 2298 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START_POST, SERVICE_STOP)) |
f42806df | 2299 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 | 2300 | else if (s->state == SERVICE_STOP_POST) |
f42806df | 2301 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
e2f3b44c | 2302 | else if (s->state == SERVICE_RELOAD) { |
f42806df LP |
2303 | s->reload_result = SERVICE_FAILURE_RESOURCES; |
2304 | service_enter_running(s, SERVICE_SUCCESS); | |
e2f3b44c | 2305 | } else |
f42806df | 2306 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
5cb5a6ff LP |
2307 | } |
2308 | ||
f42806df | 2309 | static void service_run_next_main(Service *s) { |
34e9ba66 LP |
2310 | pid_t pid; |
2311 | int r; | |
2312 | ||
2313 | assert(s); | |
867b3b7d LP |
2314 | assert(s->main_command); |
2315 | assert(s->main_command->command_next); | |
2316 | assert(s->type == SERVICE_ONESHOT); | |
34e9ba66 | 2317 | |
867b3b7d | 2318 | s->main_command = s->main_command->command_next; |
34e9ba66 LP |
2319 | service_unwatch_main_pid(s); |
2320 | ||
ecedd90f LP |
2321 | r = service_spawn(s, |
2322 | s->main_command, | |
21b2ce39 | 2323 | s->timeout_start_usec, |
1703fa41 | 2324 | EXEC_PASS_FDS|EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_SET_WATCHDOG, |
ecedd90f LP |
2325 | &pid); |
2326 | if (r < 0) | |
34e9ba66 LP |
2327 | goto fail; |
2328 | ||
2329 | service_set_main_pid(s, pid); | |
2330 | ||
2331 | return; | |
2332 | ||
2333 | fail: | |
f2341e0a | 2334 | log_unit_warning_errno(UNIT(s), r, "Failed to run next main task: %m"); |
f42806df | 2335 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
34e9ba66 LP |
2336 | } |
2337 | ||
87f0e418 LP |
2338 | static int service_start(Unit *u) { |
2339 | Service *s = SERVICE(u); | |
07299350 | 2340 | int r; |
5cb5a6ff LP |
2341 | |
2342 | assert(s); | |
2343 | ||
034c6ed7 LP |
2344 | /* We cannot fulfill this request right now, try again later |
2345 | * please! */ | |
a00973af | 2346 | if (IN_SET(s->state, |
c87700a1 | 2347 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
a00973af | 2348 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) |
5cb5a6ff LP |
2349 | return -EAGAIN; |
2350 | ||
034c6ed7 | 2351 | /* Already on it! */ |
a00973af | 2352 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST)) |
034c6ed7 LP |
2353 | return 0; |
2354 | ||
2e9d6c12 | 2355 | /* A service that will be restarted must be stopped first to |
7f2cddae | 2356 | * trigger BindsTo and/or OnFailure dependencies. If a user |
2e9d6c12 | 2357 | * does not want to wait for the holdoff time to elapse, the |
d4943dc7 LP |
2358 | * service should be manually restarted, not started. We |
2359 | * simply return EAGAIN here, so that any start jobs stay | |
2360 | * queued, and assume that the auto restart timer will | |
2361 | * eventually trigger the restart. */ | |
2362 | if (s->state == SERVICE_AUTO_RESTART) | |
a8bb2e65 | 2363 | return -EAGAIN; |
2e9d6c12 | 2364 | |
a00973af | 2365 | assert(IN_SET(s->state, SERVICE_DEAD, SERVICE_FAILED)); |
5cb5a6ff | 2366 | |
07299350 | 2367 | /* Make sure we don't enter a busy loop of some kind. */ |
97a3f4ee | 2368 | r = unit_test_start_limit(u); |
07299350 LP |
2369 | if (r < 0) { |
2370 | service_enter_dead(s, SERVICE_FAILURE_START_LIMIT_HIT, false); | |
2371 | return r; | |
2372 | } | |
2373 | ||
4b58153d LP |
2374 | r = unit_acquire_invocation_id(u); |
2375 | if (r < 0) | |
2376 | return r; | |
2377 | ||
f42806df LP |
2378 | s->result = SERVICE_SUCCESS; |
2379 | s->reload_result = SERVICE_SUCCESS; | |
034c6ed7 | 2380 | s->main_pid_known = false; |
6dfa5494 | 2381 | s->main_pid_alien = false; |
47342320 | 2382 | s->forbid_restart = false; |
3c7416b6 | 2383 | |
a1e58e8e | 2384 | s->status_text = mfree(s->status_text); |
8cfdb077 LP |
2385 | s->status_errno = 0; |
2386 | ||
308d72dc LP |
2387 | s->notify_state = NOTIFY_UNKNOWN; |
2388 | ||
aa8c4bbf | 2389 | s->watchdog_original_usec = s->watchdog_usec; |
2787d83c | 2390 | s->watchdog_override_enable = false; |
aa8c4bbf | 2391 | s->watchdog_override_usec = USEC_INFINITY; |
2787d83c | 2392 | |
6a1d4d9f LP |
2393 | exec_command_reset_status_list_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); |
2394 | exec_status_reset(&s->main_exec_status); | |
2395 | ||
7a0019d3 LP |
2396 | /* This is not an automatic restart? Flush the restart counter then */ |
2397 | if (s->flush_n_restarts) { | |
2398 | s->n_restarts = 0; | |
2399 | s->flush_n_restarts = false; | |
2400 | } | |
2401 | ||
6a1d4d9f LP |
2402 | u->reset_accounting = true; |
2403 | ||
034c6ed7 | 2404 | service_enter_start_pre(s); |
82a2b6bb | 2405 | return 1; |
5cb5a6ff LP |
2406 | } |
2407 | ||
87f0e418 LP |
2408 | static int service_stop(Unit *u) { |
2409 | Service *s = SERVICE(u); | |
5cb5a6ff LP |
2410 | |
2411 | assert(s); | |
2412 | ||
a509f0e6 | 2413 | /* Don't create restart jobs from manual stops. */ |
47342320 | 2414 | s->forbid_restart = true; |
034c6ed7 | 2415 | |
e537352b | 2416 | /* Already on it */ |
a00973af | 2417 | if (IN_SET(s->state, |
c87700a1 | 2418 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
a00973af | 2419 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) |
e537352b LP |
2420 | return 0; |
2421 | ||
f0c7b229 | 2422 | /* A restart will be scheduled or is in progress. */ |
034c6ed7 | 2423 | if (s->state == SERVICE_AUTO_RESTART) { |
0c7f15b3 | 2424 | service_set_state(s, SERVICE_DEAD); |
034c6ed7 LP |
2425 | return 0; |
2426 | } | |
2427 | ||
3f6c78dc LP |
2428 | /* If there's already something running we go directly into |
2429 | * kill mode. */ | |
a00973af | 2430 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RELOAD)) { |
f42806df | 2431 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
3f6c78dc LP |
2432 | return 0; |
2433 | } | |
5cb5a6ff | 2434 | |
a00973af | 2435 | assert(IN_SET(s->state, SERVICE_RUNNING, SERVICE_EXITED)); |
3a762661 | 2436 | |
f42806df | 2437 | service_enter_stop(s, SERVICE_SUCCESS); |
82a2b6bb | 2438 | return 1; |
5cb5a6ff LP |
2439 | } |
2440 | ||
87f0e418 LP |
2441 | static int service_reload(Unit *u) { |
2442 | Service *s = SERVICE(u); | |
034c6ed7 LP |
2443 | |
2444 | assert(s); | |
2445 | ||
3742095b | 2446 | assert(IN_SET(s->state, SERVICE_RUNNING, SERVICE_EXITED)); |
034c6ed7 LP |
2447 | |
2448 | service_enter_reload(s); | |
2d018ae2 | 2449 | return 1; |
5cb5a6ff LP |
2450 | } |
2451 | ||
44a6b1b6 | 2452 | _pure_ static bool service_can_reload(Unit *u) { |
87f0e418 | 2453 | Service *s = SERVICE(u); |
034c6ed7 LP |
2454 | |
2455 | assert(s); | |
2456 | ||
2457 | return !!s->exec_command[SERVICE_EXEC_RELOAD]; | |
2458 | } | |
2459 | ||
e266c068 MS |
2460 | static unsigned service_exec_command_index(Unit *u, ServiceExecCommand id, ExecCommand *current) { |
2461 | Service *s = SERVICE(u); | |
2462 | unsigned idx = 0; | |
2463 | ExecCommand *first, *c; | |
2464 | ||
2465 | assert(s); | |
2466 | ||
2467 | first = s->exec_command[id]; | |
2468 | ||
2469 | /* Figure out where we are in the list by walking back to the beginning */ | |
2470 | for (c = current; c != first; c = c->command_prev) | |
2471 | idx++; | |
2472 | ||
2473 | return idx; | |
2474 | } | |
2475 | ||
2476 | static int service_serialize_exec_command(Unit *u, FILE *f, ExecCommand *command) { | |
d68c645b LP |
2477 | _cleanup_free_ char *args = NULL, *p = NULL; |
2478 | size_t allocated = 0, length = 0; | |
e266c068 | 2479 | Service *s = SERVICE(u); |
d68c645b | 2480 | const char *type, *key; |
e266c068 MS |
2481 | ServiceExecCommand id; |
2482 | unsigned idx; | |
e266c068 | 2483 | char **arg; |
e266c068 MS |
2484 | |
2485 | assert(s); | |
2486 | assert(f); | |
2487 | ||
2488 | if (!command) | |
2489 | return 0; | |
2490 | ||
2491 | if (command == s->control_command) { | |
2492 | type = "control"; | |
2493 | id = s->control_command_id; | |
2494 | } else { | |
2495 | type = "main"; | |
2496 | id = SERVICE_EXEC_START; | |
2497 | } | |
2498 | ||
2499 | idx = service_exec_command_index(u, id, command); | |
2500 | ||
2501 | STRV_FOREACH(arg, command->argv) { | |
e266c068 | 2502 | _cleanup_free_ char *e = NULL; |
d68c645b | 2503 | size_t n; |
e266c068 | 2504 | |
d68c645b | 2505 | e = cescape(*arg); |
e266c068 | 2506 | if (!e) |
d68c645b | 2507 | return log_oom(); |
e266c068 MS |
2508 | |
2509 | n = strlen(e); | |
2510 | if (!GREEDY_REALLOC(args, allocated, length + 1 + n + 1)) | |
d68c645b | 2511 | return log_oom(); |
e266c068 MS |
2512 | |
2513 | if (length > 0) | |
2514 | args[length++] = ' '; | |
2515 | ||
2516 | memcpy(args + length, e, n); | |
2517 | length += n; | |
2518 | } | |
2519 | ||
2520 | if (!GREEDY_REALLOC(args, allocated, length + 1)) | |
d68c645b LP |
2521 | return log_oom(); |
2522 | ||
e266c068 MS |
2523 | args[length++] = 0; |
2524 | ||
d68c645b | 2525 | p = cescape(command->path); |
e266c068 MS |
2526 | if (!p) |
2527 | return -ENOMEM; | |
2528 | ||
d68c645b LP |
2529 | key = strjoina(type, "-command"); |
2530 | return serialize_item_format(f, key, "%s %u %s %s", service_exec_command_to_string(id), idx, p, args); | |
e266c068 MS |
2531 | } |
2532 | ||
a16e1123 LP |
2533 | static int service_serialize(Unit *u, FILE *f, FDSet *fds) { |
2534 | Service *s = SERVICE(u); | |
2339fc93 | 2535 | ServiceFDStore *fs; |
a34ceba6 | 2536 | int r; |
a16e1123 LP |
2537 | |
2538 | assert(u); | |
2539 | assert(f); | |
2540 | assert(fds); | |
2541 | ||
d68c645b LP |
2542 | (void) serialize_item(f, "state", service_state_to_string(s->state)); |
2543 | (void) serialize_item(f, "result", service_result_to_string(s->result)); | |
2544 | (void) serialize_item(f, "reload-result", service_result_to_string(s->reload_result)); | |
a16e1123 LP |
2545 | |
2546 | if (s->control_pid > 0) | |
d68c645b | 2547 | (void) serialize_item_format(f, "control-pid", PID_FMT, s->control_pid); |
a16e1123 | 2548 | |
5925dd3c | 2549 | if (s->main_pid_known && s->main_pid > 0) |
d68c645b | 2550 | (void) serialize_item_format(f, "main-pid", PID_FMT, s->main_pid); |
a16e1123 | 2551 | |
d68c645b LP |
2552 | (void) serialize_bool(f, "main-pid-known", s->main_pid_known); |
2553 | (void) serialize_bool(f, "bus-name-good", s->bus_name_good); | |
2554 | (void) serialize_bool(f, "bus-name-owner", s->bus_name_owner); | |
a16e1123 | 2555 | |
d68c645b LP |
2556 | (void) serialize_item_format(f, "n-restarts", "%u", s->n_restarts); |
2557 | (void) serialize_bool(f, "flush-n-restarts", s->flush_n_restarts); | |
7a0019d3 | 2558 | |
d68c645b | 2559 | r = serialize_item_escaped(f, "status-text", s->status_text); |
a34ceba6 LP |
2560 | if (r < 0) |
2561 | return r; | |
3a2776bc | 2562 | |
e266c068 MS |
2563 | service_serialize_exec_command(u, f, s->control_command); |
2564 | service_serialize_exec_command(u, f, s->main_command); | |
a16e1123 | 2565 | |
d68c645b | 2566 | r = serialize_fd(f, fds, "stdin-fd", s->stdin_fd); |
a34ceba6 LP |
2567 | if (r < 0) |
2568 | return r; | |
d68c645b | 2569 | r = serialize_fd(f, fds, "stdout-fd", s->stdout_fd); |
a34ceba6 LP |
2570 | if (r < 0) |
2571 | return r; | |
d68c645b | 2572 | r = serialize_fd(f, fds, "stderr-fd", s->stderr_fd); |
a34ceba6 LP |
2573 | if (r < 0) |
2574 | return r; | |
e44da745 | 2575 | |
5686391b | 2576 | if (s->exec_fd_event_source) { |
d68c645b | 2577 | r = serialize_fd(f, fds, "exec-fd", sd_event_source_get_io_fd(s->exec_fd_event_source)); |
5686391b LP |
2578 | if (r < 0) |
2579 | return r; | |
d68c645b LP |
2580 | |
2581 | (void) serialize_bool(f, "exec-fd-hot", s->exec_fd_hot); | |
5686391b LP |
2582 | } |
2583 | ||
9dfb64f8 | 2584 | if (UNIT_ISSET(s->accept_socket)) { |
d68c645b | 2585 | r = serialize_item(f, "accept-socket", UNIT_DEREF(s->accept_socket)->id); |
9dfb64f8 ZJS |
2586 | if (r < 0) |
2587 | return r; | |
2588 | } | |
2589 | ||
d68c645b | 2590 | r = serialize_fd(f, fds, "socket-fd", s->socket_fd); |
a34ceba6 LP |
2591 | if (r < 0) |
2592 | return r; | |
e44da745 | 2593 | |
2339fc93 | 2594 | LIST_FOREACH(fd_store, fs, s->fd_store) { |
8dd4c05b | 2595 | _cleanup_free_ char *c = NULL; |
2339fc93 LP |
2596 | int copy; |
2597 | ||
2598 | copy = fdset_put_dup(fds, fs->fd); | |
2599 | if (copy < 0) | |
d68c645b | 2600 | return log_error_errno(copy, "Failed to copy file descriptor for serialization: %m"); |
2339fc93 | 2601 | |
8dd4c05b | 2602 | c = cescape(fs->fdname); |
d68c645b LP |
2603 | if (!c) |
2604 | return log_oom(); | |
8dd4c05b | 2605 | |
d68c645b | 2606 | (void) serialize_item_format(f, "fd-store-fd", "%i %s", copy, c); |
2339fc93 LP |
2607 | } |
2608 | ||
ecdbca40 | 2609 | if (s->main_exec_status.pid > 0) { |
d68c645b LP |
2610 | (void) serialize_item_format(f, "main-exec-status-pid", PID_FMT, s->main_exec_status.pid); |
2611 | (void) serialize_dual_timestamp(f, "main-exec-status-start", &s->main_exec_status.start_timestamp); | |
2612 | (void) serialize_dual_timestamp(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp); | |
ecdbca40 | 2613 | |
799fd0fd | 2614 | if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) { |
d68c645b LP |
2615 | (void) serialize_item_format(f, "main-exec-status-code", "%i", s->main_exec_status.code); |
2616 | (void) serialize_item_format(f, "main-exec-status-status", "%i", s->main_exec_status.status); | |
ecdbca40 LP |
2617 | } |
2618 | } | |
f06db334 | 2619 | |
d68c645b LP |
2620 | (void) serialize_dual_timestamp(f, "watchdog-timestamp", &s->watchdog_timestamp); |
2621 | (void) serialize_bool(f, "forbid-restart", s->forbid_restart); | |
6aca9a58 | 2622 | |
2787d83c | 2623 | if (s->watchdog_override_enable) |
d68c645b | 2624 | (void) serialize_item_format(f, "watchdog-override-usec", USEC_FMT, s->watchdog_override_usec); |
2787d83c | 2625 | |
aa8c4bbf LP |
2626 | if (s->watchdog_original_usec != USEC_INFINITY) |
2627 | (void) serialize_item_format(f, "watchdog-original-usec", USEC_FMT, s->watchdog_original_usec); | |
2628 | ||
a16e1123 LP |
2629 | return 0; |
2630 | } | |
2631 | ||
e266c068 MS |
2632 | static int service_deserialize_exec_command(Unit *u, const char *key, const char *value) { |
2633 | Service *s = SERVICE(u); | |
2634 | int r; | |
2635 | unsigned idx = 0, i; | |
2636 | bool control, found = false; | |
2637 | ServiceExecCommand id = _SERVICE_EXEC_COMMAND_INVALID; | |
2638 | ExecCommand *command = NULL; | |
6eeec374 | 2639 | _cleanup_free_ char *path = NULL; |
e266c068 MS |
2640 | _cleanup_strv_free_ char **argv = NULL; |
2641 | ||
2642 | enum ExecCommandState { | |
2643 | STATE_EXEC_COMMAND_TYPE, | |
2644 | STATE_EXEC_COMMAND_INDEX, | |
2645 | STATE_EXEC_COMMAND_PATH, | |
2646 | STATE_EXEC_COMMAND_ARGS, | |
2647 | _STATE_EXEC_COMMAND_MAX, | |
2648 | _STATE_EXEC_COMMAND_INVALID = -1, | |
2649 | } state; | |
2650 | ||
2651 | assert(s); | |
2652 | assert(key); | |
2653 | assert(value); | |
2654 | ||
2655 | control = streq(key, "control-command"); | |
2656 | ||
2657 | state = STATE_EXEC_COMMAND_TYPE; | |
2658 | ||
2659 | for (;;) { | |
2660 | _cleanup_free_ char *arg = NULL; | |
2661 | ||
2662 | r = extract_first_word(&value, &arg, NULL, EXTRACT_CUNESCAPE); | |
efa3f34e LP |
2663 | if (r < 0) |
2664 | return r; | |
e266c068 MS |
2665 | if (r == 0) |
2666 | break; | |
e266c068 MS |
2667 | |
2668 | switch (state) { | |
2669 | case STATE_EXEC_COMMAND_TYPE: | |
2670 | id = service_exec_command_from_string(arg); | |
2671 | if (id < 0) | |
2672 | return -EINVAL; | |
2673 | ||
2674 | state = STATE_EXEC_COMMAND_INDEX; | |
2675 | break; | |
2676 | case STATE_EXEC_COMMAND_INDEX: | |
2677 | r = safe_atou(arg, &idx); | |
2678 | if (r < 0) | |
2679 | return -EINVAL; | |
2680 | ||
2681 | state = STATE_EXEC_COMMAND_PATH; | |
2682 | break; | |
2683 | case STATE_EXEC_COMMAND_PATH: | |
ae2a15bc | 2684 | path = TAKE_PTR(arg); |
e266c068 MS |
2685 | state = STATE_EXEC_COMMAND_ARGS; |
2686 | ||
2687 | if (!path_is_absolute(path)) | |
2688 | return -EINVAL; | |
2689 | break; | |
2690 | case STATE_EXEC_COMMAND_ARGS: | |
2691 | r = strv_extend(&argv, arg); | |
2692 | if (r < 0) | |
2693 | return -ENOMEM; | |
2694 | break; | |
2695 | default: | |
2696 | assert_not_reached("Unknown error at deserialization of exec command"); | |
2697 | break; | |
2698 | } | |
2699 | } | |
2700 | ||
2701 | if (state != STATE_EXEC_COMMAND_ARGS) | |
2702 | return -EINVAL; | |
2703 | ||
2704 | /* Let's check whether exec command on given offset matches data that we just deserialized */ | |
2705 | for (command = s->exec_command[id], i = 0; command; command = command->command_next, i++) { | |
2706 | if (i != idx) | |
2707 | continue; | |
2708 | ||
2709 | found = strv_equal(argv, command->argv) && streq(command->path, path); | |
2710 | break; | |
2711 | } | |
2712 | ||
2713 | if (!found) { | |
2714 | /* Command at the index we serialized is different, let's look for command that exactly | |
2715 | * matches but is on different index. If there is no such command we will not resume execution. */ | |
2716 | for (command = s->exec_command[id]; command; command = command->command_next) | |
2717 | if (strv_equal(command->argv, argv) && streq(command->path, path)) | |
2718 | break; | |
2719 | } | |
2720 | ||
2721 | if (command && control) | |
2722 | s->control_command = command; | |
2723 | else if (command) | |
2724 | s->main_command = command; | |
2725 | else | |
2726 | log_unit_warning(u, "Current command vanished from the unit file, execution of the command list won't be resumed."); | |
2727 | ||
2728 | return 0; | |
2729 | } | |
2730 | ||
a16e1123 LP |
2731 | static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { |
2732 | Service *s = SERVICE(u); | |
2339fc93 | 2733 | int r; |
a16e1123 LP |
2734 | |
2735 | assert(u); | |
2736 | assert(key); | |
2737 | assert(value); | |
2738 | assert(fds); | |
2739 | ||
2740 | if (streq(key, "state")) { | |
2741 | ServiceState state; | |
2742 | ||
117dcc57 ZJS |
2743 | state = service_state_from_string(value); |
2744 | if (state < 0) | |
f2341e0a | 2745 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
2746 | else |
2747 | s->deserialized_state = state; | |
f42806df LP |
2748 | } else if (streq(key, "result")) { |
2749 | ServiceResult f; | |
2750 | ||
2751 | f = service_result_from_string(value); | |
2752 | if (f < 0) | |
f2341e0a | 2753 | log_unit_debug(u, "Failed to parse result value: %s", value); |
f42806df LP |
2754 | else if (f != SERVICE_SUCCESS) |
2755 | s->result = f; | |
2756 | ||
2757 | } else if (streq(key, "reload-result")) { | |
2758 | ServiceResult f; | |
2759 | ||
2760 | f = service_result_from_string(value); | |
2761 | if (f < 0) | |
f2341e0a | 2762 | log_unit_debug(u, "Failed to parse reload result value: %s", value); |
f42806df LP |
2763 | else if (f != SERVICE_SUCCESS) |
2764 | s->reload_result = f; | |
a16e1123 | 2765 | |
a16e1123 | 2766 | } else if (streq(key, "control-pid")) { |
5925dd3c | 2767 | pid_t pid; |
a16e1123 | 2768 | |
e364ad06 | 2769 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2770 | log_unit_debug(u, "Failed to parse control-pid value: %s", value); |
a16e1123 | 2771 | else |
e55224ca | 2772 | s->control_pid = pid; |
a16e1123 | 2773 | } else if (streq(key, "main-pid")) { |
5925dd3c | 2774 | pid_t pid; |
a16e1123 | 2775 | |
e364ad06 | 2776 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2777 | log_unit_debug(u, "Failed to parse main-pid value: %s", value); |
eabd3e56 LP |
2778 | else |
2779 | (void) service_set_main_pid(s, pid); | |
a16e1123 LP |
2780 | } else if (streq(key, "main-pid-known")) { |
2781 | int b; | |
2782 | ||
117dcc57 ZJS |
2783 | b = parse_boolean(value); |
2784 | if (b < 0) | |
f2341e0a | 2785 | log_unit_debug(u, "Failed to parse main-pid-known value: %s", value); |
a16e1123 LP |
2786 | else |
2787 | s->main_pid_known = b; | |
de1d4f9b WF |
2788 | } else if (streq(key, "bus-name-good")) { |
2789 | int b; | |
2790 | ||
2791 | b = parse_boolean(value); | |
2792 | if (b < 0) | |
2793 | log_unit_debug(u, "Failed to parse bus-name-good value: %s", value); | |
2794 | else | |
2795 | s->bus_name_good = b; | |
d8ccf5fd DM |
2796 | } else if (streq(key, "bus-name-owner")) { |
2797 | r = free_and_strdup(&s->bus_name_owner, value); | |
2798 | if (r < 0) | |
2799 | log_unit_error_errno(u, r, "Unable to deserialize current bus owner %s: %m", value); | |
3a2776bc LP |
2800 | } else if (streq(key, "status-text")) { |
2801 | char *t; | |
2802 | ||
f2341e0a LP |
2803 | r = cunescape(value, 0, &t); |
2804 | if (r < 0) | |
5e1ee764 | 2805 | log_unit_debug_errno(u, r, "Failed to unescape status text '%s': %m", value); |
efa3f34e LP |
2806 | else |
2807 | free_and_replace(s->status_text, t); | |
3a2776bc | 2808 | |
9dfb64f8 ZJS |
2809 | } else if (streq(key, "accept-socket")) { |
2810 | Unit *socket; | |
2811 | ||
2812 | r = manager_load_unit(u->manager, value, NULL, NULL, &socket); | |
2813 | if (r < 0) | |
5e1ee764 | 2814 | log_unit_debug_errno(u, r, "Failed to load accept-socket unit '%s': %m", value); |
9dfb64f8 | 2815 | else { |
7f7d01ed | 2816 | unit_ref_set(&s->accept_socket, u, socket); |
9dfb64f8 ZJS |
2817 | SOCKET(socket)->n_connections++; |
2818 | } | |
2819 | ||
a16e1123 LP |
2820 | } else if (streq(key, "socket-fd")) { |
2821 | int fd; | |
2822 | ||
2823 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 2824 | log_unit_debug(u, "Failed to parse socket-fd value: %s", value); |
a16e1123 | 2825 | else { |
574634bc | 2826 | asynchronous_close(s->socket_fd); |
a16e1123 LP |
2827 | s->socket_fd = fdset_remove(fds, fd); |
2828 | } | |
2339fc93 | 2829 | } else if (streq(key, "fd-store-fd")) { |
8dd4c05b LP |
2830 | const char *fdv; |
2831 | size_t pf; | |
2339fc93 LP |
2832 | int fd; |
2833 | ||
8dd4c05b LP |
2834 | pf = strcspn(value, WHITESPACE); |
2835 | fdv = strndupa(value, pf); | |
2836 | ||
2837 | if (safe_atoi(fdv, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 2838 | log_unit_debug(u, "Failed to parse fd-store-fd value: %s", value); |
2339fc93 | 2839 | else { |
8dd4c05b LP |
2840 | _cleanup_free_ char *t = NULL; |
2841 | const char *fdn; | |
2842 | ||
2843 | fdn = value + pf; | |
2844 | fdn += strspn(fdn, WHITESPACE); | |
2845 | (void) cunescape(fdn, 0, &t); | |
2846 | ||
2847 | r = service_add_fd_store(s, fd, t); | |
2339fc93 | 2848 | if (r < 0) |
f2341e0a | 2849 | log_unit_error_errno(u, r, "Failed to add fd to store: %m"); |
9021ff17 | 2850 | else |
2339fc93 LP |
2851 | fdset_remove(fds, fd); |
2852 | } | |
2853 | ||
ecdbca40 LP |
2854 | } else if (streq(key, "main-exec-status-pid")) { |
2855 | pid_t pid; | |
2856 | ||
e364ad06 | 2857 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2858 | log_unit_debug(u, "Failed to parse main-exec-status-pid value: %s", value); |
ecdbca40 LP |
2859 | else |
2860 | s->main_exec_status.pid = pid; | |
2861 | } else if (streq(key, "main-exec-status-code")) { | |
2862 | int i; | |
2863 | ||
e364ad06 | 2864 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 2865 | log_unit_debug(u, "Failed to parse main-exec-status-code value: %s", value); |
ecdbca40 LP |
2866 | else |
2867 | s->main_exec_status.code = i; | |
2868 | } else if (streq(key, "main-exec-status-status")) { | |
2869 | int i; | |
2870 | ||
e364ad06 | 2871 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 2872 | log_unit_debug(u, "Failed to parse main-exec-status-status value: %s", value); |
ecdbca40 LP |
2873 | else |
2874 | s->main_exec_status.status = i; | |
799fd0fd | 2875 | } else if (streq(key, "main-exec-status-start")) |
d68c645b | 2876 | deserialize_dual_timestamp(value, &s->main_exec_status.start_timestamp); |
799fd0fd | 2877 | else if (streq(key, "main-exec-status-exit")) |
d68c645b | 2878 | deserialize_dual_timestamp(value, &s->main_exec_status.exit_timestamp); |
a6927d7f | 2879 | else if (streq(key, "watchdog-timestamp")) |
d68c645b | 2880 | deserialize_dual_timestamp(value, &s->watchdog_timestamp); |
613b411c | 2881 | else if (streq(key, "forbid-restart")) { |
6aca9a58 SE |
2882 | int b; |
2883 | ||
2884 | b = parse_boolean(value); | |
2885 | if (b < 0) | |
f2341e0a | 2886 | log_unit_debug(u, "Failed to parse forbid-restart value: %s", value); |
6aca9a58 SE |
2887 | else |
2888 | s->forbid_restart = b; | |
a34ceba6 LP |
2889 | } else if (streq(key, "stdin-fd")) { |
2890 | int fd; | |
2891 | ||
2892 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2893 | log_unit_debug(u, "Failed to parse stdin-fd value: %s", value); | |
2894 | else { | |
2895 | asynchronous_close(s->stdin_fd); | |
2896 | s->stdin_fd = fdset_remove(fds, fd); | |
1e22b5cd | 2897 | s->exec_context.stdio_as_fds = true; |
a34ceba6 LP |
2898 | } |
2899 | } else if (streq(key, "stdout-fd")) { | |
2900 | int fd; | |
2901 | ||
2902 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2903 | log_unit_debug(u, "Failed to parse stdout-fd value: %s", value); | |
2904 | else { | |
2905 | asynchronous_close(s->stdout_fd); | |
2906 | s->stdout_fd = fdset_remove(fds, fd); | |
1e22b5cd | 2907 | s->exec_context.stdio_as_fds = true; |
a34ceba6 LP |
2908 | } |
2909 | } else if (streq(key, "stderr-fd")) { | |
2910 | int fd; | |
2911 | ||
2912 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2913 | log_unit_debug(u, "Failed to parse stderr-fd value: %s", value); | |
2914 | else { | |
2915 | asynchronous_close(s->stderr_fd); | |
2916 | s->stderr_fd = fdset_remove(fds, fd); | |
1e22b5cd | 2917 | s->exec_context.stdio_as_fds = true; |
a34ceba6 | 2918 | } |
5686391b LP |
2919 | } else if (streq(key, "exec-fd")) { |
2920 | int fd; | |
2921 | ||
2922 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2923 | log_unit_debug(u, "Failed to parse exec-fd value: %s", value); | |
2924 | else { | |
2925 | s->exec_fd_event_source = sd_event_source_unref(s->exec_fd_event_source); | |
2926 | ||
2927 | fd = fdset_remove(fds, fd); | |
2928 | if (service_allocate_exec_fd_event_source(s, fd, &s->exec_fd_event_source) < 0) | |
2929 | safe_close(fd); | |
2930 | } | |
2787d83c | 2931 | } else if (streq(key, "watchdog-override-usec")) { |
d68c645b | 2932 | if (deserialize_usec(value, &s->watchdog_override_usec) < 0) |
2787d83c | 2933 | log_unit_debug(u, "Failed to parse watchdog_override_usec value: %s", value); |
d68c645b | 2934 | else |
2787d83c | 2935 | s->watchdog_override_enable = true; |
d68c645b | 2936 | |
aa8c4bbf LP |
2937 | } else if (streq(key, "watchdog-original-usec")) { |
2938 | if (deserialize_usec(value, &s->watchdog_original_usec) < 0) | |
2939 | log_unit_debug(u, "Failed to parse watchdog_original_usec value: %s", value); | |
2940 | ||
e266c068 MS |
2941 | } else if (STR_IN_SET(key, "main-command", "control-command")) { |
2942 | r = service_deserialize_exec_command(u, key, value); | |
2943 | if (r < 0) | |
2944 | log_unit_debug_errno(u, r, "Failed to parse serialized command \"%s\": %m", value); | |
7a0019d3 LP |
2945 | |
2946 | } else if (streq(key, "n-restarts")) { | |
2947 | r = safe_atou(value, &s->n_restarts); | |
2948 | if (r < 0) | |
2949 | log_unit_debug_errno(u, r, "Failed to parse serialized restart counter '%s': %m", value); | |
2950 | ||
2951 | } else if (streq(key, "flush-n-restarts")) { | |
2952 | r = parse_boolean(value); | |
2953 | if (r < 0) | |
2954 | log_unit_debug_errno(u, r, "Failed to parse serialized flush restart counter setting '%s': %m", value); | |
2955 | else | |
2956 | s->flush_n_restarts = r; | |
c17ec25e | 2957 | } else |
f2341e0a | 2958 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
2959 | |
2960 | return 0; | |
2961 | } | |
2962 | ||
44a6b1b6 | 2963 | _pure_ static UnitActiveState service_active_state(Unit *u) { |
e056b01d LP |
2964 | const UnitActiveState *table; |
2965 | ||
87f0e418 | 2966 | assert(u); |
5cb5a6ff | 2967 | |
e056b01d LP |
2968 | table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
2969 | ||
2970 | return table[SERVICE(u)->state]; | |
034c6ed7 LP |
2971 | } |
2972 | ||
10a94420 LP |
2973 | static const char *service_sub_state_to_string(Unit *u) { |
2974 | assert(u); | |
2975 | ||
2976 | return service_state_to_string(SERVICE(u)->state); | |
2977 | } | |
2978 | ||
f2f725e5 | 2979 | static bool service_may_gc(Unit *u) { |
701cc384 LP |
2980 | Service *s = SERVICE(u); |
2981 | ||
2982 | assert(s); | |
2983 | ||
e98b2fbb | 2984 | /* Never clean up services that still have a process around, even if the service is formally dead. Note that |
f2f725e5 | 2985 | * unit_may_gc() already checked our cgroup for us, we just check our two additional PIDs, too, in case they |
e98b2fbb LP |
2986 | * have moved outside of the cgroup. */ |
2987 | ||
2988 | if (main_pid_good(s) > 0 || | |
6d55002a | 2989 | control_pid_good(s) > 0) |
f2f725e5 | 2990 | return false; |
6d55002a | 2991 | |
f2f725e5 | 2992 | return true; |
6d55002a LP |
2993 | } |
2994 | ||
3a111838 MS |
2995 | static int service_retry_pid_file(Service *s) { |
2996 | int r; | |
2997 | ||
2998 | assert(s->pid_file); | |
3742095b | 2999 | assert(IN_SET(s->state, SERVICE_START, SERVICE_START_POST)); |
3a111838 MS |
3000 | |
3001 | r = service_load_pid_file(s, false); | |
3002 | if (r < 0) | |
3003 | return r; | |
3004 | ||
3005 | service_unwatch_pid_file(s); | |
3006 | ||
f42806df | 3007 | service_enter_running(s, SERVICE_SUCCESS); |
3a111838 MS |
3008 | return 0; |
3009 | } | |
3010 | ||
3011 | static int service_watch_pid_file(Service *s) { | |
3012 | int r; | |
3013 | ||
f2341e0a | 3014 | log_unit_debug(UNIT(s), "Setting watch for PID file %s", s->pid_file_pathspec->path); |
8bb2d17d | 3015 | |
5686391b | 3016 | r = path_spec_watch(s->pid_file_pathspec, service_dispatch_inotify_io); |
3a111838 MS |
3017 | if (r < 0) |
3018 | goto fail; | |
3019 | ||
3020 | /* the pidfile might have appeared just before we set the watch */ | |
f2341e0a | 3021 | log_unit_debug(UNIT(s), "Trying to read PID file %s in case it changed", s->pid_file_pathspec->path); |
3a111838 MS |
3022 | service_retry_pid_file(s); |
3023 | ||
3024 | return 0; | |
3025 | fail: | |
f2341e0a | 3026 | log_unit_error_errno(UNIT(s), r, "Failed to set a watch for PID file %s: %m", s->pid_file_pathspec->path); |
3a111838 MS |
3027 | service_unwatch_pid_file(s); |
3028 | return r; | |
3029 | } | |
3030 | ||
3031 | static int service_demand_pid_file(Service *s) { | |
3032 | PathSpec *ps; | |
3033 | ||
3034 | assert(s->pid_file); | |
3035 | assert(!s->pid_file_pathspec); | |
3036 | ||
3037 | ps = new0(PathSpec, 1); | |
3038 | if (!ps) | |
3039 | return -ENOMEM; | |
3040 | ||
718db961 | 3041 | ps->unit = UNIT(s); |
3a111838 MS |
3042 | ps->path = strdup(s->pid_file); |
3043 | if (!ps->path) { | |
3044 | free(ps); | |
3045 | return -ENOMEM; | |
3046 | } | |
3047 | ||
858d36c1 | 3048 | path_simplify(ps->path, false); |
3a111838 MS |
3049 | |
3050 | /* PATH_CHANGED would not be enough. There are daemons (sendmail) that | |
3051 | * keep their PID file open all the time. */ | |
3052 | ps->type = PATH_MODIFIED; | |
3053 | ps->inotify_fd = -1; | |
3054 | ||
3055 | s->pid_file_pathspec = ps; | |
3056 | ||
3057 | return service_watch_pid_file(s); | |
3058 | } | |
3059 | ||
5686391b | 3060 | static int service_dispatch_inotify_io(sd_event_source *source, int fd, uint32_t events, void *userdata) { |
e14c2802 LP |
3061 | PathSpec *p = userdata; |
3062 | Service *s; | |
3063 | ||
3064 | assert(p); | |
3065 | ||
3066 | s = SERVICE(p->unit); | |
3a111838 MS |
3067 | |
3068 | assert(s); | |
3069 | assert(fd >= 0); | |
3742095b | 3070 | assert(IN_SET(s->state, SERVICE_START, SERVICE_START_POST)); |
3a111838 | 3071 | assert(s->pid_file_pathspec); |
57020a3a | 3072 | assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd)); |
3a111838 | 3073 | |
f2341e0a | 3074 | log_unit_debug(UNIT(s), "inotify event"); |
3a111838 | 3075 | |
e14c2802 | 3076 | if (path_spec_fd_event(p, events) < 0) |
3a111838 MS |
3077 | goto fail; |
3078 | ||
3079 | if (service_retry_pid_file(s) == 0) | |
718db961 | 3080 | return 0; |
3a111838 MS |
3081 | |
3082 | if (service_watch_pid_file(s) < 0) | |
3083 | goto fail; | |
3084 | ||
718db961 LP |
3085 | return 0; |
3086 | ||
3a111838 MS |
3087 | fail: |
3088 | service_unwatch_pid_file(s); | |
f42806df | 3089 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
718db961 | 3090 | return 0; |
3a111838 MS |
3091 | } |
3092 | ||
5686391b LP |
3093 | static int service_dispatch_exec_io(sd_event_source *source, int fd, uint32_t events, void *userdata) { |
3094 | Service *s = SERVICE(userdata); | |
3095 | ||
3096 | assert(s); | |
3097 | ||
3098 | log_unit_debug(UNIT(s), "got exec-fd event"); | |
3099 | ||
3100 | /* If Type=exec is set, we'll consider a service started successfully the instant we invoked execve() | |
3101 | * successfully for it. We implement this through a pipe() towards the child, which the kernel automatically | |
3102 | * closes for us due to O_CLOEXEC on execve() in the child, which then triggers EOF on the pipe in the | |
3103 | * parent. We need to be careful however, as there are other reasons that we might cause the child's side of | |
3104 | * the pipe to be closed (for example, a simple exit()). To deal with that we'll ignore EOFs on the pipe unless | |
3105 | * the child signalled us first that it is about to call the execve(). It does so by sending us a simple | |
3106 | * non-zero byte via the pipe. We also provide the child with a way to inform us in case execve() failed: if it | |
3107 | * sends a zero byte we'll ignore POLLHUP on the fd again. */ | |
3108 | ||
3109 | for (;;) { | |
3110 | uint8_t x; | |
3111 | ssize_t n; | |
3112 | ||
3113 | n = read(fd, &x, sizeof(x)); | |
3114 | if (n < 0) { | |
3115 | if (errno == EAGAIN) /* O_NONBLOCK in effect → everything queued has now been processed. */ | |
3116 | return 0; | |
3117 | ||
3118 | return log_unit_error_errno(UNIT(s), errno, "Failed to read from exec_fd: %m"); | |
3119 | } | |
3120 | if (n == 0) { /* EOF → the event we are waiting for */ | |
3121 | ||
3122 | s->exec_fd_event_source = sd_event_source_unref(s->exec_fd_event_source); | |
3123 | ||
3124 | if (s->exec_fd_hot) { /* Did the child tell us to expect EOF now? */ | |
3125 | log_unit_debug(UNIT(s), "Got EOF on exec-fd"); | |
3126 | ||
3127 | s->exec_fd_hot = false; | |
3128 | ||
3129 | /* Nice! This is what we have been waiting for. Transition to next state. */ | |
3130 | if (s->type == SERVICE_EXEC && s->state == SERVICE_START) | |
3131 | service_enter_start_post(s); | |
3132 | } else | |
3133 | log_unit_debug(UNIT(s), "Got EOF on exec-fd while it was disabled, ignoring."); | |
3134 | ||
3135 | return 0; | |
3136 | } | |
3137 | ||
3138 | /* A byte was read → this turns on/off the exec fd logic */ | |
3139 | assert(n == sizeof(x)); | |
3140 | s->exec_fd_hot = x; | |
3141 | } | |
3142 | ||
3143 | return 0; | |
3144 | } | |
3145 | ||
a911bb9a LP |
3146 | static void service_notify_cgroup_empty_event(Unit *u) { |
3147 | Service *s = SERVICE(u); | |
3148 | ||
3149 | assert(u); | |
3150 | ||
a5b5aece | 3151 | log_unit_debug(u, "Control group is empty."); |
a911bb9a LP |
3152 | |
3153 | switch (s->state) { | |
3154 | ||
3155 | /* Waiting for SIGCHLD is usually more interesting, | |
3156 | * because it includes return codes/signals. Which is | |
3157 | * why we ignore the cgroup events for most cases, | |
3158 | * except when we don't know pid which to expect the | |
3159 | * SIGCHLD for. */ | |
3160 | ||
3161 | case SERVICE_START: | |
3c751b1b LP |
3162 | if (s->type == SERVICE_NOTIFY && |
3163 | main_pid_good(s) == 0 && | |
3164 | control_pid_good(s) == 0) { | |
3d474ef7 | 3165 | /* No chance of getting a ready notification anymore */ |
c3fda31d | 3166 | service_enter_stop_post(s, SERVICE_FAILURE_PROTOCOL); |
71e529fc JW |
3167 | break; |
3168 | } | |
3169 | ||
4831981d | 3170 | _fallthrough_; |
71e529fc | 3171 | case SERVICE_START_POST: |
3c751b1b LP |
3172 | if (s->pid_file_pathspec && |
3173 | main_pid_good(s) == 0 && | |
3174 | control_pid_good(s) == 0) { | |
3175 | ||
3d474ef7 | 3176 | /* Give up hoping for the daemon to write its PID file */ |
f2341e0a | 3177 | log_unit_warning(u, "Daemon never wrote its PID file. Failing."); |
8bb2d17d | 3178 | |
a911bb9a LP |
3179 | service_unwatch_pid_file(s); |
3180 | if (s->state == SERVICE_START) | |
c3fda31d | 3181 | service_enter_stop_post(s, SERVICE_FAILURE_PROTOCOL); |
a911bb9a | 3182 | else |
c35755fb | 3183 | service_enter_stop(s, SERVICE_FAILURE_PROTOCOL); |
a911bb9a LP |
3184 | } |
3185 | break; | |
3186 | ||
3187 | case SERVICE_RUNNING: | |
3188 | /* service_enter_running() will figure out what to do */ | |
3189 | service_enter_running(s, SERVICE_SUCCESS); | |
3190 | break; | |
3191 | ||
c87700a1 | 3192 | case SERVICE_STOP_WATCHDOG: |
a911bb9a LP |
3193 | case SERVICE_STOP_SIGTERM: |
3194 | case SERVICE_STOP_SIGKILL: | |
3195 | ||
b13ddbbc | 3196 | if (main_pid_good(s) <= 0 && control_pid_good(s) <= 0) |
a911bb9a LP |
3197 | service_enter_stop_post(s, SERVICE_SUCCESS); |
3198 | ||
3199 | break; | |
3200 | ||
3201 | case SERVICE_STOP_POST: | |
3202 | case SERVICE_FINAL_SIGTERM: | |
3203 | case SERVICE_FINAL_SIGKILL: | |
b13ddbbc | 3204 | if (main_pid_good(s) <= 0 && control_pid_good(s) <= 0) |
a911bb9a LP |
3205 | service_enter_dead(s, SERVICE_SUCCESS, true); |
3206 | ||
3207 | break; | |
3208 | ||
3209 | default: | |
3210 | ; | |
3211 | } | |
3212 | } | |
3213 | ||
87f0e418 | 3214 | static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
5cdabc8d | 3215 | bool notify_dbus = true; |
87f0e418 | 3216 | Service *s = SERVICE(u); |
f42806df | 3217 | ServiceResult f; |
e5123725 | 3218 | ExitClean clean_mode; |
5cb5a6ff LP |
3219 | |
3220 | assert(s); | |
034c6ed7 LP |
3221 | assert(pid >= 0); |
3222 | ||
e5123725 AZ |
3223 | /* Oneshot services and non-SERVICE_EXEC_START commands should not be |
3224 | * considered daemons as they are typically not long running. */ | |
3225 | if (s->type == SERVICE_ONESHOT || (s->control_pid == pid && s->control_command_id != SERVICE_EXEC_START)) | |
3226 | clean_mode = EXIT_CLEAN_COMMAND; | |
3227 | else | |
3228 | clean_mode = EXIT_CLEAN_DAEMON; | |
3229 | ||
3230 | if (is_clean_exit(code, status, clean_mode, &s->success_status)) | |
f42806df LP |
3231 | f = SERVICE_SUCCESS; |
3232 | else if (code == CLD_EXITED) | |
3233 | f = SERVICE_FAILURE_EXIT_CODE; | |
3234 | else if (code == CLD_KILLED) | |
3235 | f = SERVICE_FAILURE_SIGNAL; | |
3236 | else if (code == CLD_DUMPED) | |
3237 | f = SERVICE_FAILURE_CORE_DUMP; | |
d06dacd0 | 3238 | else |
cfc4eb4c | 3239 | assert_not_reached("Unknown code"); |
034c6ed7 LP |
3240 | |
3241 | if (s->main_pid == pid) { | |
db01f8b3 MS |
3242 | /* Forking services may occasionally move to a new PID. |
3243 | * As long as they update the PID file before exiting the old | |
3244 | * PID, they're fine. */ | |
db256aab | 3245 | if (service_load_pid_file(s, false) > 0) |
db01f8b3 | 3246 | return; |
034c6ed7 | 3247 | |
034c6ed7 | 3248 | s->main_pid = 0; |
6ea832a2 | 3249 | exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status); |
034c6ed7 | 3250 | |
867b3b7d | 3251 | if (s->main_command) { |
fbeefb45 LP |
3252 | /* If this is not a forking service than the |
3253 | * main process got started and hence we copy | |
3254 | * the exit status so that it is recorded both | |
3255 | * as main and as control process exit | |
3256 | * status */ | |
3257 | ||
867b3b7d | 3258 | s->main_command->exec_status = s->main_exec_status; |
b708e7ce | 3259 | |
3ed0cd26 | 3260 | if (s->main_command->flags & EXEC_COMMAND_IGNORE_FAILURE) |
f42806df | 3261 | f = SERVICE_SUCCESS; |
fbeefb45 LP |
3262 | } else if (s->exec_command[SERVICE_EXEC_START]) { |
3263 | ||
3264 | /* If this is a forked process, then we should | |
3265 | * ignore the return value if this was | |
3266 | * configured for the starter process */ | |
3267 | ||
3ed0cd26 | 3268 | if (s->exec_command[SERVICE_EXEC_START]->flags & EXEC_COMMAND_IGNORE_FAILURE) |
fbeefb45 | 3269 | f = SERVICE_SUCCESS; |
034c6ed7 LP |
3270 | } |
3271 | ||
5368222d LP |
3272 | /* When this is a successful exit, let's log about the exit code on DEBUG level. If this is a failure |
3273 | * and the process exited on its own via exit(), then let's make this a NOTICE, under the assumption | |
91bbd9b7 LP |
3274 | * that the service already logged the reason at a higher log level on its own. (Internally, |
3275 | * unit_log_process_exit() will possibly bump this to WARNING if the service died due to a signal.) */ | |
3276 | unit_log_process_exit( | |
3277 | u, f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, | |
3278 | "Main process", | |
3279 | service_exec_command_to_string(SERVICE_EXEC_START), | |
3280 | code, status); | |
f42806df | 3281 | |
a0fef983 | 3282 | if (s->result == SERVICE_SUCCESS) |
f42806df | 3283 | s->result = f; |
034c6ed7 | 3284 | |
867b3b7d LP |
3285 | if (s->main_command && |
3286 | s->main_command->command_next && | |
b58aeb70 | 3287 | s->type == SERVICE_ONESHOT && |
f42806df | 3288 | f == SERVICE_SUCCESS) { |
034c6ed7 | 3289 | |
34e9ba66 LP |
3290 | /* There is another command to * |
3291 | * execute, so let's do that. */ | |
034c6ed7 | 3292 | |
f2341e0a | 3293 | log_unit_debug(u, "Running next main command for state %s.", service_state_to_string(s->state)); |
f42806df | 3294 | service_run_next_main(s); |
034c6ed7 | 3295 | |
34e9ba66 LP |
3296 | } else { |
3297 | ||
3298 | /* The service exited, so the service is officially | |
3299 | * gone. */ | |
867b3b7d | 3300 | s->main_command = NULL; |
34e9ba66 LP |
3301 | |
3302 | switch (s->state) { | |
3303 | ||
3304 | case SERVICE_START_POST: | |
3305 | case SERVICE_RELOAD: | |
3306 | case SERVICE_STOP: | |
3307 | /* Need to wait until the operation is | |
3308 | * done */ | |
c4653a4d | 3309 | break; |
7d55e835 | 3310 | |
34e9ba66 LP |
3311 | case SERVICE_START: |
3312 | if (s->type == SERVICE_ONESHOT) { | |
3313 | /* This was our main goal, so let's go on */ | |
f42806df | 3314 | if (f == SERVICE_SUCCESS) |
34e9ba66 LP |
3315 | service_enter_start_post(s); |
3316 | else | |
c3fda31d | 3317 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
34e9ba66 | 3318 | break; |
3d474ef7 JW |
3319 | } else if (s->type == SERVICE_NOTIFY) { |
3320 | /* Only enter running through a notification, so that the | |
3321 | * SERVICE_START state signifies that no ready notification | |
3322 | * has been received */ | |
3323 | if (f != SERVICE_SUCCESS) | |
c3fda31d | 3324 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
df66b93f JW |
3325 | else if (!s->remain_after_exit || s->notify_access == NOTIFY_MAIN) |
3326 | /* The service has never been and will never be active */ | |
c3fda31d | 3327 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_PROTOCOL); |
3d474ef7 | 3328 | break; |
34e9ba66 | 3329 | } |
034c6ed7 | 3330 | |
4831981d | 3331 | _fallthrough_; |
34e9ba66 | 3332 | case SERVICE_RUNNING: |
f42806df | 3333 | service_enter_running(s, f); |
34e9ba66 | 3334 | break; |
034c6ed7 | 3335 | |
c87700a1 | 3336 | case SERVICE_STOP_WATCHDOG: |
34e9ba66 LP |
3337 | case SERVICE_STOP_SIGTERM: |
3338 | case SERVICE_STOP_SIGKILL: | |
5cb5a6ff | 3339 | |
b13ddbbc | 3340 | if (control_pid_good(s) <= 0) |
f42806df | 3341 | service_enter_stop_post(s, f); |
5cb5a6ff | 3342 | |
34e9ba66 LP |
3343 | /* If there is still a control process, wait for that first */ |
3344 | break; | |
3345 | ||
bf108e55 LP |
3346 | case SERVICE_STOP_POST: |
3347 | case SERVICE_FINAL_SIGTERM: | |
3348 | case SERVICE_FINAL_SIGKILL: | |
3349 | ||
b13ddbbc | 3350 | if (control_pid_good(s) <= 0) |
bf108e55 LP |
3351 | service_enter_dead(s, f, true); |
3352 | break; | |
3353 | ||
34e9ba66 LP |
3354 | default: |
3355 | assert_not_reached("Uh, main process died at wrong time."); | |
3356 | } | |
034c6ed7 | 3357 | } |
5cb5a6ff | 3358 | |
034c6ed7 | 3359 | } else if (s->control_pid == pid) { |
34e9ba66 LP |
3360 | s->control_pid = 0; |
3361 | ||
b708e7ce | 3362 | if (s->control_command) { |
8bb2d17d | 3363 | exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status); |
a16e1123 | 3364 | |
3ed0cd26 | 3365 | if (s->control_command->flags & EXEC_COMMAND_IGNORE_FAILURE) |
f42806df | 3366 | f = SERVICE_SUCCESS; |
b708e7ce LP |
3367 | } |
3368 | ||
91bbd9b7 LP |
3369 | unit_log_process_exit( |
3370 | u, f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, | |
3371 | "Control process", | |
3372 | service_exec_command_to_string(s->control_command_id), | |
3373 | code, status); | |
f42806df | 3374 | |
a0fef983 | 3375 | if (s->result == SERVICE_SUCCESS) |
f42806df | 3376 | s->result = f; |
034c6ed7 | 3377 | |
34e9ba66 LP |
3378 | if (s->control_command && |
3379 | s->control_command->command_next && | |
f42806df | 3380 | f == SERVICE_SUCCESS) { |
034c6ed7 LP |
3381 | |
3382 | /* There is another command to * | |
3383 | * execute, so let's do that. */ | |
3384 | ||
f2341e0a | 3385 | log_unit_debug(u, "Running next control command for state %s.", service_state_to_string(s->state)); |
f42806df | 3386 | service_run_next_control(s); |
034c6ed7 | 3387 | |
80876c20 | 3388 | } else { |
034c6ed7 LP |
3389 | /* No further commands for this step, so let's |
3390 | * figure out what to do next */ | |
3391 | ||
a16e1123 LP |
3392 | s->control_command = NULL; |
3393 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
3394 | ||
f2341e0a | 3395 | log_unit_debug(u, "Got final SIGCHLD for state %s.", service_state_to_string(s->state)); |
bd982a8b | 3396 | |
034c6ed7 LP |
3397 | switch (s->state) { |
3398 | ||
3399 | case SERVICE_START_PRE: | |
f42806df | 3400 | if (f == SERVICE_SUCCESS) |
034c6ed7 LP |
3401 | service_enter_start(s); |
3402 | else | |
c3fda31d | 3403 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
034c6ed7 LP |
3404 | break; |
3405 | ||
3406 | case SERVICE_START: | |
bfba3256 LP |
3407 | if (s->type != SERVICE_FORKING) |
3408 | /* Maybe spurious event due to a reload that changed the type? */ | |
3409 | break; | |
034c6ed7 | 3410 | |
f42806df | 3411 | if (f != SERVICE_SUCCESS) { |
c3fda31d | 3412 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
3a111838 MS |
3413 | break; |
3414 | } | |
034c6ed7 | 3415 | |
3a111838 | 3416 | if (s->pid_file) { |
f42806df LP |
3417 | bool has_start_post; |
3418 | int r; | |
3419 | ||
3a111838 MS |
3420 | /* Let's try to load the pid file here if we can. |
3421 | * The PID file might actually be created by a START_POST | |
3422 | * script. In that case don't worry if the loading fails. */ | |
f42806df | 3423 | |
5d904a6a | 3424 | has_start_post = s->exec_command[SERVICE_EXEC_START_POST]; |
f42806df | 3425 | r = service_load_pid_file(s, !has_start_post); |
3a111838 MS |
3426 | if (!has_start_post && r < 0) { |
3427 | r = service_demand_pid_file(s); | |
b13ddbbc | 3428 | if (r < 0 || cgroup_good(s) == 0) |
c3fda31d | 3429 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_PROTOCOL); |
3a111838 MS |
3430 | break; |
3431 | } | |
034c6ed7 | 3432 | } else |
783e05d6 | 3433 | service_search_main_pid(s); |
034c6ed7 | 3434 | |
3a111838 | 3435 | service_enter_start_post(s); |
034c6ed7 LP |
3436 | break; |
3437 | ||
3438 | case SERVICE_START_POST: | |
f42806df | 3439 | if (f != SERVICE_SUCCESS) { |
ce359e98 | 3440 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
2096e009 | 3441 | break; |
034c6ed7 LP |
3442 | } |
3443 | ||
2096e009 | 3444 | if (s->pid_file) { |
f42806df LP |
3445 | int r; |
3446 | ||
3447 | r = service_load_pid_file(s, true); | |
2096e009 MS |
3448 | if (r < 0) { |
3449 | r = service_demand_pid_file(s); | |
b13ddbbc | 3450 | if (r < 0 || cgroup_good(s) == 0) |
c35755fb | 3451 | service_enter_stop(s, SERVICE_FAILURE_PROTOCOL); |
2096e009 MS |
3452 | break; |
3453 | } | |
3454 | } else | |
783e05d6 | 3455 | service_search_main_pid(s); |
2096e009 | 3456 | |
f42806df | 3457 | service_enter_running(s, SERVICE_SUCCESS); |
3185a36b | 3458 | break; |
034c6ed7 LP |
3459 | |
3460 | case SERVICE_RELOAD: | |
7236ce6e ZJS |
3461 | if (f == SERVICE_SUCCESS) |
3462 | if (service_load_pid_file(s, true) < 0) | |
3463 | service_search_main_pid(s); | |
3185a36b | 3464 | |
f42806df LP |
3465 | s->reload_result = f; |
3466 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
3467 | break; |
3468 | ||
3469 | case SERVICE_STOP: | |
f42806df | 3470 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
034c6ed7 LP |
3471 | break; |
3472 | ||
c87700a1 | 3473 | case SERVICE_STOP_WATCHDOG: |
034c6ed7 LP |
3474 | case SERVICE_STOP_SIGTERM: |
3475 | case SERVICE_STOP_SIGKILL: | |
3476 | if (main_pid_good(s) <= 0) | |
f42806df | 3477 | service_enter_stop_post(s, f); |
034c6ed7 | 3478 | |
846a07b5 | 3479 | /* If there is still a service process around, wait until |
034c6ed7 LP |
3480 | * that one quit, too */ |
3481 | break; | |
3482 | ||
3483 | case SERVICE_STOP_POST: | |
3484 | case SERVICE_FINAL_SIGTERM: | |
3485 | case SERVICE_FINAL_SIGKILL: | |
bf108e55 LP |
3486 | if (main_pid_good(s) <= 0) |
3487 | service_enter_dead(s, f, true); | |
034c6ed7 LP |
3488 | break; |
3489 | ||
3490 | default: | |
3491 | assert_not_reached("Uh, control process died at wrong time."); | |
3492 | } | |
3493 | } | |
5cdabc8d LP |
3494 | } else /* Neither control nor main PID? If so, don't notify about anything */ |
3495 | notify_dbus = false; | |
c4e2ceae LP |
3496 | |
3497 | /* Notify clients about changed exit status */ | |
5cdabc8d LP |
3498 | if (notify_dbus) |
3499 | unit_add_to_dbus_queue(u); | |
a911bb9a | 3500 | |
846a07b5 FB |
3501 | /* We watch the main/control process otherwise we can't retrieve the unit they |
3502 | * belong to with cgroupv1. But if they are not our direct child, we won't get a | |
3503 | * SIGCHLD for them. Therefore we need to look for others to watch so we can | |
3504 | * detect when the cgroup becomes empty. Note that the control process is always | |
3505 | * our child so it's pointless to watch all other processes. */ | |
3506 | if (!control_pid_good(s)) | |
3507 | if (!s->main_pid_known || s->main_pid_alien) | |
3508 | (void) unit_enqueue_rewatch_pids(u); | |
034c6ed7 LP |
3509 | } |
3510 | ||
718db961 LP |
3511 | static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
3512 | Service *s = SERVICE(userdata); | |
034c6ed7 LP |
3513 | |
3514 | assert(s); | |
718db961 | 3515 | assert(source == s->timer_event_source); |
034c6ed7 LP |
3516 | |
3517 | switch (s->state) { | |
3518 | ||
3519 | case SERVICE_START_PRE: | |
3520 | case SERVICE_START: | |
f2341e0a | 3521 | log_unit_warning(UNIT(s), "%s operation timed out. Terminating.", s->state == SERVICE_START ? "Start" : "Start-pre"); |
c3fda31d | 3522 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
80876c20 LP |
3523 | break; |
3524 | ||
034c6ed7 | 3525 | case SERVICE_START_POST: |
f2341e0a | 3526 | log_unit_warning(UNIT(s), "Start-post operation timed out. Stopping."); |
ce359e98 | 3527 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3528 | break; |
3529 | ||
36c16a7c LP |
3530 | case SERVICE_RUNNING: |
3531 | log_unit_warning(UNIT(s), "Service reached runtime time limit. Stopping."); | |
3532 | service_enter_stop(s, SERVICE_FAILURE_TIMEOUT); | |
3533 | break; | |
3534 | ||
e2f3b44c | 3535 | case SERVICE_RELOAD: |
089b64d5 | 3536 | log_unit_warning(UNIT(s), "Reload operation timed out. Killing reload process."); |
e9a4f676 | 3537 | service_kill_control_process(s); |
f42806df LP |
3538 | s->reload_result = SERVICE_FAILURE_TIMEOUT; |
3539 | service_enter_running(s, SERVICE_SUCCESS); | |
e2f3b44c LP |
3540 | break; |
3541 | ||
034c6ed7 | 3542 | case SERVICE_STOP: |
f2341e0a | 3543 | log_unit_warning(UNIT(s), "Stopping timed out. Terminating."); |
f42806df | 3544 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3545 | break; |
3546 | ||
c87700a1 AZ |
3547 | case SERVICE_STOP_WATCHDOG: |
3548 | log_unit_warning(UNIT(s), "State 'stop-watchdog' timed out. Terminating."); | |
2ab2ab7b | 3549 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
db2cb23b UTL |
3550 | break; |
3551 | ||
034c6ed7 | 3552 | case SERVICE_STOP_SIGTERM: |
4819ff03 | 3553 | if (s->kill_context.send_sigkill) { |
f2341e0a | 3554 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Killing."); |
f42806df | 3555 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 3556 | } else { |
f2341e0a | 3557 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Skipping SIGKILL."); |
f42806df | 3558 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
ba035df2 LP |
3559 | } |
3560 | ||
034c6ed7 LP |
3561 | break; |
3562 | ||
3563 | case SERVICE_STOP_SIGKILL: | |
35b8ca3a | 3564 | /* Uh, we sent a SIGKILL and it is still not gone? |
034c6ed7 LP |
3565 | * Must be something we cannot kill, so let's just be |
3566 | * weirded out and continue */ | |
3567 | ||
f2341e0a | 3568 | log_unit_warning(UNIT(s), "Processes still around after SIGKILL. Ignoring."); |
f42806df | 3569 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3570 | break; |
3571 | ||
3572 | case SERVICE_STOP_POST: | |
f2341e0a | 3573 | log_unit_warning(UNIT(s), "State 'stop-post' timed out. Terminating."); |
f42806df | 3574 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3575 | break; |
3576 | ||
3577 | case SERVICE_FINAL_SIGTERM: | |
4819ff03 | 3578 | if (s->kill_context.send_sigkill) { |
f2341e0a | 3579 | log_unit_warning(UNIT(s), "State 'stop-final-sigterm' timed out. Killing."); |
f42806df | 3580 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 3581 | } else { |
f2341e0a | 3582 | log_unit_warning(UNIT(s), "State 'stop-final-sigterm' timed out. Skipping SIGKILL. Entering failed mode."); |
f42806df | 3583 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false); |
ba035df2 LP |
3584 | } |
3585 | ||
034c6ed7 LP |
3586 | break; |
3587 | ||
3588 | case SERVICE_FINAL_SIGKILL: | |
f2341e0a | 3589 | log_unit_warning(UNIT(s), "Processes still around after final SIGKILL. Entering failed mode."); |
f42806df | 3590 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true); |
034c6ed7 LP |
3591 | break; |
3592 | ||
3593 | case SERVICE_AUTO_RESTART: | |
5ce6e7f5 ZJS |
3594 | if (s->restart_usec > 0) { |
3595 | char buf_restart[FORMAT_TIMESPAN_MAX]; | |
3596 | log_unit_info(UNIT(s), | |
3597 | "Service RestartSec=%s expired, scheduling restart.", | |
3598 | format_timespan(buf_restart, sizeof buf_restart, s->restart_usec, USEC_PER_SEC)); | |
3599 | } else | |
3600 | log_unit_info(UNIT(s), | |
3601 | "Service has no hold-off time (RestartSec=0), scheduling restart."); | |
3602 | ||
034c6ed7 LP |
3603 | service_enter_restart(s); |
3604 | break; | |
3605 | ||
3606 | default: | |
3607 | assert_not_reached("Timeout at wrong time."); | |
3608 | } | |
718db961 LP |
3609 | |
3610 | return 0; | |
3611 | } | |
3612 | ||
3613 | static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata) { | |
3614 | Service *s = SERVICE(userdata); | |
a7850c7d | 3615 | char t[FORMAT_TIMESPAN_MAX]; |
2787d83c | 3616 | usec_t watchdog_usec; |
718db961 LP |
3617 | |
3618 | assert(s); | |
3619 | assert(source == s->watchdog_event_source); | |
3620 | ||
2787d83c M |
3621 | watchdog_usec = service_get_watchdog_usec(s); |
3622 | ||
2a12e32e JK |
3623 | if (UNIT(s)->manager->service_watchdogs) { |
3624 | log_unit_error(UNIT(s), "Watchdog timeout (limit %s)!", | |
3625 | format_timespan(t, sizeof(t), watchdog_usec, 1)); | |
8bb2d17d | 3626 | |
c87700a1 | 3627 | service_enter_signal(s, SERVICE_STOP_WATCHDOG, SERVICE_FAILURE_WATCHDOG); |
2a12e32e JK |
3628 | } else |
3629 | log_unit_warning(UNIT(s), "Watchdog disabled! Ignoring watchdog timeout (limit %s)!", | |
3630 | format_timespan(t, sizeof(t), watchdog_usec, 1)); | |
842129f5 | 3631 | |
718db961 | 3632 | return 0; |
5cb5a6ff LP |
3633 | } |
3634 | ||
e3285237 LP |
3635 | static bool service_notify_message_authorized(Service *s, pid_t pid, char **tags, FDSet *fds) { |
3636 | assert(s); | |
8c47c732 | 3637 | |
c952c6ec | 3638 | if (s->notify_access == NOTIFY_NONE) { |
e3285237 LP |
3639 | log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception is disabled.", pid); |
3640 | return false; | |
3641 | } | |
3642 | ||
3643 | if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) { | |
336c6e46 | 3644 | 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); |
336c6e46 | 3646 | else |
e3285237 LP |
3647 | 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); |
3648 | ||
3649 | return false; | |
3650 | } | |
3651 | ||
3652 | if (s->notify_access == NOTIFY_EXEC && pid != s->main_pid && pid != s->control_pid) { | |
6375bd20 | 3653 | if (s->main_pid != 0 && s->control_pid != 0) |
e3285237 | 3654 | 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 |
3655 | pid, s->main_pid, s->control_pid); |
3656 | else if (s->main_pid != 0) | |
e3285237 | 3657 | 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 | 3658 | else if (s->control_pid != 0) |
e3285237 | 3659 | 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 | 3660 | else |
e3285237 LP |
3661 | 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); |
3662 | ||
3663 | return false; | |
9711848f LP |
3664 | } |
3665 | ||
e3285237 LP |
3666 | return true; |
3667 | } | |
3668 | ||
db256aab LP |
3669 | static void service_notify_message( |
3670 | Unit *u, | |
3671 | const struct ucred *ucred, | |
3672 | char **tags, | |
3673 | FDSet *fds) { | |
3674 | ||
e3285237 LP |
3675 | Service *s = SERVICE(u); |
3676 | bool notify_dbus = false; | |
3677 | const char *e; | |
cc2b7b11 | 3678 | char **i; |
db256aab | 3679 | int r; |
e3285237 LP |
3680 | |
3681 | assert(u); | |
db256aab | 3682 | assert(ucred); |
e3285237 | 3683 | |
db256aab | 3684 | if (!service_notify_message_authorized(SERVICE(u), ucred->pid, tags, fds)) |
e3285237 LP |
3685 | return; |
3686 | ||
f1d34068 | 3687 | if (DEBUG_LOGGING) { |
9711848f LP |
3688 | _cleanup_free_ char *cc = NULL; |
3689 | ||
3690 | cc = strv_join(tags, ", "); | |
db256aab | 3691 | log_unit_debug(u, "Got notification message from PID "PID_FMT" (%s)", ucred->pid, isempty(cc) ? "n/a" : cc); |
9711848f | 3692 | } |
c952c6ec | 3693 | |
8c47c732 | 3694 | /* Interpret MAINPID= */ |
28849dba | 3695 | e = strv_find_startswith(tags, "MAINPID="); |
5e56b378 | 3696 | if (e && IN_SET(s->state, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) { |
db256aab LP |
3697 | pid_t new_main_pid; |
3698 | ||
3699 | if (parse_pid(e, &new_main_pid) < 0) | |
3700 | log_unit_warning(u, "Failed to parse MAINPID= field in notification message, ignoring: %s", e); | |
3701 | else if (!s->main_pid_known || new_main_pid != s->main_pid) { | |
3702 | ||
3703 | r = service_is_suitable_main_pid(s, new_main_pid, LOG_WARNING); | |
3704 | if (r == 0) { | |
3705 | /* The new main PID is a bit suspicous, which is OK if the sender is privileged. */ | |
3706 | ||
3707 | if (ucred->uid == 0) { | |
3708 | 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); | |
3709 | r = 1; | |
3710 | } else | |
3711 | log_unit_debug(u, "New main PID "PID_FMT" does not belong to service, refusing.", new_main_pid); | |
3712 | } | |
3713 | if (r > 0) { | |
3714 | service_set_main_pid(s, new_main_pid); | |
cdc2af3e | 3715 | |
f75f613d | 3716 | r = unit_watch_pid(UNIT(s), new_main_pid, false); |
cdc2af3e LP |
3717 | if (r < 0) |
3718 | log_unit_warning_errno(UNIT(s), r, "Failed to watch new main PID "PID_FMT" for service: %m", new_main_pid); | |
3719 | ||
db256aab LP |
3720 | notify_dbus = true; |
3721 | } | |
8c47c732 LP |
3722 | } |
3723 | } | |
3724 | ||
cc2b7b11 LP |
3725 | /* Interpret READY=/STOPPING=/RELOADING=. Last one wins. */ |
3726 | STRV_FOREACH_BACKWARDS(i, tags) { | |
308d72dc | 3727 | |
cc2b7b11 LP |
3728 | if (streq(*i, "READY=1")) { |
3729 | s->notify_state = NOTIFY_READY; | |
308d72dc | 3730 | |
cc2b7b11 LP |
3731 | /* Type=notify services inform us about completed |
3732 | * initialization with READY=1 */ | |
3733 | if (s->type == SERVICE_NOTIFY && s->state == SERVICE_START) | |
3734 | service_enter_start_post(s); | |
308d72dc | 3735 | |
cc2b7b11 LP |
3736 | /* Sending READY=1 while we are reloading informs us |
3737 | * that the reloading is complete */ | |
3738 | if (s->state == SERVICE_RELOAD && s->control_pid == 0) | |
3739 | service_enter_running(s, SERVICE_SUCCESS); | |
308d72dc | 3740 | |
cc2b7b11 LP |
3741 | notify_dbus = true; |
3742 | break; | |
308d72dc | 3743 | |
cc2b7b11 LP |
3744 | } else if (streq(*i, "RELOADING=1")) { |
3745 | s->notify_state = NOTIFY_RELOADING; | |
308d72dc | 3746 | |
cc2b7b11 LP |
3747 | if (s->state == SERVICE_RUNNING) |
3748 | service_enter_reload_by_notify(s); | |
308d72dc | 3749 | |
cc2b7b11 LP |
3750 | notify_dbus = true; |
3751 | break; | |
308d72dc | 3752 | |
cc2b7b11 LP |
3753 | } else if (streq(*i, "STOPPING=1")) { |
3754 | s->notify_state = NOTIFY_STOPPING; | |
308d72dc | 3755 | |
cc2b7b11 LP |
3756 | if (s->state == SERVICE_RUNNING) |
3757 | service_enter_stop_by_notify(s); | |
308d72dc | 3758 | |
cc2b7b11 LP |
3759 | notify_dbus = true; |
3760 | break; | |
3761 | } | |
8c47c732 LP |
3762 | } |
3763 | ||
3764 | /* Interpret STATUS= */ | |
28849dba | 3765 | e = strv_find_startswith(tags, "STATUS="); |
7f110ff9 | 3766 | if (e) { |
28849dba | 3767 | _cleanup_free_ char *t = NULL; |
8c47c732 | 3768 | |
28849dba | 3769 | if (!isempty(e)) { |
3eac1bca LP |
3770 | /* Note that this size limit check is mostly paranoia: since the datagram size we are willing |
3771 | * to process is already limited to NOTIFY_BUFFER_MAX, this limit here should never be hit. */ | |
3772 | if (strlen(e) > STATUS_TEXT_MAX) | |
3773 | log_unit_warning(u, "Status message overly long (%zu > %u), ignoring.", strlen(e), STATUS_TEXT_MAX); | |
3774 | else if (!utf8_is_valid(e)) | |
3775 | log_unit_warning(u, "Status message in notification message is not UTF-8 clean, ignoring."); | |
28849dba | 3776 | else { |
28849dba LP |
3777 | t = strdup(e); |
3778 | if (!t) | |
3779 | log_oom(); | |
3a2776bc | 3780 | } |
28849dba | 3781 | } |
8c47c732 | 3782 | |
30b5275a | 3783 | if (!streq_ptr(s->status_text, t)) { |
3b319885 | 3784 | free_and_replace(s->status_text, t); |
30b5275a | 3785 | notify_dbus = true; |
28849dba | 3786 | } |
8c47c732 | 3787 | } |
842129f5 | 3788 | |
4774e357 | 3789 | /* Interpret ERRNO= */ |
28849dba | 3790 | e = strv_find_startswith(tags, "ERRNO="); |
4774e357 MAA |
3791 | if (e) { |
3792 | int status_errno; | |
3793 | ||
2fa40742 LP |
3794 | status_errno = parse_errno(e); |
3795 | if (status_errno < 0) | |
3796 | log_unit_warning_errno(u, status_errno, | |
5e1ee764 | 3797 | "Failed to parse ERRNO= field value '%s' in notification message: %m", e); |
2fa40742 LP |
3798 | else if (s->status_errno != status_errno) { |
3799 | s->status_errno = status_errno; | |
3800 | notify_dbus = true; | |
4774e357 MAA |
3801 | } |
3802 | } | |
3803 | ||
a327431b DB |
3804 | /* Interpret EXTEND_TIMEOUT= */ |
3805 | e = strv_find_startswith(tags, "EXTEND_TIMEOUT_USEC="); | |
3806 | if (e) { | |
3807 | usec_t extend_timeout_usec; | |
3808 | if (safe_atou64(e, &extend_timeout_usec) < 0) | |
3809 | log_unit_warning(u, "Failed to parse EXTEND_TIMEOUT_USEC=%s", e); | |
3810 | else | |
3811 | service_extend_timeout(s, extend_timeout_usec); | |
3812 | } | |
3813 | ||
6f285378 | 3814 | /* Interpret WATCHDOG= */ |
1f6b4113 | 3815 | if (strv_find(tags, "WATCHDOG=1")) |
842129f5 | 3816 | service_reset_watchdog(s); |
c4e2ceae | 3817 | |
c45d11cb LP |
3818 | e = strv_find_startswith(tags, "WATCHDOG_USEC="); |
3819 | if (e) { | |
3820 | usec_t watchdog_override_usec; | |
3821 | if (safe_atou64(e, &watchdog_override_usec) < 0) | |
3822 | log_unit_warning(u, "Failed to parse WATCHDOG_USEC=%s", e); | |
3823 | else | |
95d0d8ed | 3824 | service_override_watchdog_timeout(s, watchdog_override_usec); |
c45d11cb LP |
3825 | } |
3826 | ||
e78ee06d LP |
3827 | /* Process FD store messages. Either FDSTOREREMOVE=1 for removal, or FDSTORE=1 for addition. In both cases, |
3828 | * process FDNAME= for picking the file descriptor name to use. Note that FDNAME= is required when removing | |
3829 | * fds, but optional when pushing in new fds, for compatibility reasons. */ | |
3830 | if (strv_find(tags, "FDSTOREREMOVE=1")) { | |
3831 | const char *name; | |
3832 | ||
3833 | name = strv_find_startswith(tags, "FDNAME="); | |
3834 | if (!name || !fdname_is_valid(name)) | |
3835 | log_unit_warning(u, "FDSTOREREMOVE=1 requested, but no valid file descriptor name passed, ignoring."); | |
3836 | else | |
3837 | service_remove_fd_store(s, name); | |
3838 | ||
3839 | } else if (strv_find(tags, "FDSTORE=1")) { | |
8dd4c05b LP |
3840 | const char *name; |
3841 | ||
3842 | name = strv_find_startswith(tags, "FDNAME="); | |
3843 | if (name && !fdname_is_valid(name)) { | |
3844 | log_unit_warning(u, "Passed FDNAME= name is invalid, ignoring."); | |
3845 | name = NULL; | |
3846 | } | |
3847 | ||
e78ee06d | 3848 | (void) service_add_fd_store_set(s, fds, name); |
8dd4c05b | 3849 | } |
a354329f | 3850 | |
c4e2ceae | 3851 | /* Notify clients about changed status or main pid */ |
30b5275a LP |
3852 | if (notify_dbus) |
3853 | unit_add_to_dbus_queue(u); | |
8c47c732 LP |
3854 | } |
3855 | ||
7a7821c8 | 3856 | static int service_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 3857 | Service *s = SERVICE(u); |
7a7821c8 | 3858 | uint64_t t; |
68db7a3b ZJS |
3859 | int r; |
3860 | ||
3861 | if (!s->timer_event_source) | |
3862 | return 0; | |
3863 | ||
7a7821c8 | 3864 | r = sd_event_source_get_time(s->timer_event_source, &t); |
68db7a3b ZJS |
3865 | if (r < 0) |
3866 | return r; | |
7a7821c8 LP |
3867 | if (t == USEC_INFINITY) |
3868 | return 0; | |
68db7a3b | 3869 | |
7a7821c8 | 3870 | *timeout = t; |
68db7a3b ZJS |
3871 | return 1; |
3872 | } | |
3873 | ||
05e343b7 LP |
3874 | static void service_bus_name_owner_change( |
3875 | Unit *u, | |
3876 | const char *name, | |
3877 | const char *old_owner, | |
3878 | const char *new_owner) { | |
3879 | ||
3880 | Service *s = SERVICE(u); | |
718db961 | 3881 | int r; |
05e343b7 LP |
3882 | |
3883 | assert(s); | |
3884 | assert(name); | |
3885 | ||
3886 | assert(streq(s->bus_name, name)); | |
3887 | assert(old_owner || new_owner); | |
3888 | ||
3889 | if (old_owner && new_owner) | |
f2341e0a | 3890 | log_unit_debug(u, "D-Bus name %s changed owner from %s to %s", name, old_owner, new_owner); |
05e343b7 | 3891 | else if (old_owner) |
f2341e0a | 3892 | log_unit_debug(u, "D-Bus name %s no longer registered by %s", name, old_owner); |
05e343b7 | 3893 | else |
f2341e0a | 3894 | log_unit_debug(u, "D-Bus name %s now registered by %s", name, new_owner); |
05e343b7 LP |
3895 | |
3896 | s->bus_name_good = !!new_owner; | |
3897 | ||
d8ccf5fd DM |
3898 | /* Track the current owner, so we can reconstruct changes after a daemon reload */ |
3899 | r = free_and_strdup(&s->bus_name_owner, new_owner); | |
3900 | if (r < 0) { | |
3901 | log_unit_error_errno(u, r, "Unable to set new bus name owner %s: %m", new_owner); | |
3902 | return; | |
3903 | } | |
3904 | ||
05e343b7 LP |
3905 | if (s->type == SERVICE_DBUS) { |
3906 | ||
3907 | /* service_enter_running() will figure out what to | |
3908 | * do */ | |
3909 | if (s->state == SERVICE_RUNNING) | |
f42806df | 3910 | service_enter_running(s, SERVICE_SUCCESS); |
05e343b7 LP |
3911 | else if (s->state == SERVICE_START && new_owner) |
3912 | service_enter_start_post(s); | |
3913 | ||
3914 | } else if (new_owner && | |
3915 | s->main_pid <= 0 && | |
a6951a50 LP |
3916 | IN_SET(s->state, |
3917 | SERVICE_START, | |
3918 | SERVICE_START_POST, | |
3919 | SERVICE_RUNNING, | |
3920 | SERVICE_RELOAD)) { | |
05e343b7 | 3921 | |
4afd3348 | 3922 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; |
718db961 | 3923 | pid_t pid; |
05e343b7 | 3924 | |
718db961 | 3925 | /* Try to acquire PID from bus service */ |
05e343b7 | 3926 | |
056f95d0 | 3927 | r = sd_bus_get_name_creds(u->manager->api_bus, name, SD_BUS_CREDS_PID, &creds); |
5b12334d LP |
3928 | if (r >= 0) |
3929 | r = sd_bus_creds_get_pid(creds, &pid); | |
718db961 | 3930 | if (r >= 0) { |
7c102d60 | 3931 | log_unit_debug(u, "D-Bus name %s is now owned by process " PID_FMT, name, pid); |
05e343b7 | 3932 | |
718db961 | 3933 | service_set_main_pid(s, pid); |
f75f613d | 3934 | unit_watch_pid(UNIT(s), pid, false); |
718db961 | 3935 | } |
7400b9d2 | 3936 | } |
05e343b7 LP |
3937 | } |
3938 | ||
16115b0a | 3939 | int service_set_socket_fd(Service *s, int fd, Socket *sock, bool selinux_context_net) { |
79a98c60 LP |
3940 | _cleanup_free_ char *peer = NULL; |
3941 | int r; | |
57020a3a | 3942 | |
4f2d528d LP |
3943 | assert(s); |
3944 | assert(fd >= 0); | |
3945 | ||
7f2fbbff LP |
3946 | /* This is called by the socket code when instantiating a new service for a stream socket and the socket needs |
3947 | * to be configured. We take ownership of the passed fd on success. */ | |
4f2d528d | 3948 | |
1124fe6f | 3949 | if (UNIT(s)->load_state != UNIT_LOADED) |
4f2d528d LP |
3950 | return -EINVAL; |
3951 | ||
3952 | if (s->socket_fd >= 0) | |
3953 | return -EBUSY; | |
3954 | ||
3955 | if (s->state != SERVICE_DEAD) | |
3956 | return -EAGAIN; | |
3957 | ||
366b7db4 | 3958 | if (getpeername_pretty(fd, true, &peer) >= 0) { |
79a98c60 LP |
3959 | |
3960 | if (UNIT(s)->description) { | |
3961 | _cleanup_free_ char *a; | |
3962 | ||
605405c6 | 3963 | a = strjoin(UNIT(s)->description, " (", peer, ")"); |
79a98c60 LP |
3964 | if (!a) |
3965 | return -ENOMEM; | |
3966 | ||
3967 | r = unit_set_description(UNIT(s), a); | |
3968 | } else | |
3969 | r = unit_set_description(UNIT(s), peer); | |
3970 | ||
3971 | if (r < 0) | |
3972 | return r; | |
3973 | } | |
3974 | ||
eef85c4a | 3975 | r = unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false, UNIT_DEPENDENCY_IMPLICIT); |
7f2fbbff LP |
3976 | if (r < 0) |
3977 | return r; | |
3978 | ||
4f2d528d | 3979 | s->socket_fd = fd; |
16115b0a | 3980 | s->socket_fd_selinux_context_net = selinux_context_net; |
6cf6bbc2 | 3981 | |
7f7d01ed | 3982 | unit_ref_set(&s->accept_socket, UNIT(s), UNIT(sock)); |
7f2fbbff | 3983 | return 0; |
4f2d528d LP |
3984 | } |
3985 | ||
fdf20a31 | 3986 | static void service_reset_failed(Unit *u) { |
5632e374 LP |
3987 | Service *s = SERVICE(u); |
3988 | ||
3989 | assert(s); | |
3990 | ||
fdf20a31 | 3991 | if (s->state == SERVICE_FAILED) |
5632e374 LP |
3992 | service_set_state(s, SERVICE_DEAD); |
3993 | ||
f42806df LP |
3994 | s->result = SERVICE_SUCCESS; |
3995 | s->reload_result = SERVICE_SUCCESS; | |
7a0019d3 LP |
3996 | s->n_restarts = 0; |
3997 | s->flush_n_restarts = false; | |
5632e374 LP |
3998 | } |
3999 | ||
718db961 | 4000 | static int service_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
8a0867d6 | 4001 | Service *s = SERVICE(u); |
41efeaec | 4002 | |
a6951a50 LP |
4003 | assert(s); |
4004 | ||
814cc562 | 4005 | return unit_kill_common(u, who, signo, s->main_pid, s->control_pid, error); |
8a0867d6 LP |
4006 | } |
4007 | ||
291d565a LP |
4008 | static int service_main_pid(Unit *u) { |
4009 | Service *s = SERVICE(u); | |
4010 | ||
4011 | assert(s); | |
4012 | ||
4013 | return s->main_pid; | |
4014 | } | |
4015 | ||
4016 | static int service_control_pid(Unit *u) { | |
4017 | Service *s = SERVICE(u); | |
4018 | ||
4019 | assert(s); | |
4020 | ||
4021 | return s->control_pid; | |
4022 | } | |
4023 | ||
bb2c7685 LP |
4024 | static bool service_needs_console(Unit *u) { |
4025 | Service *s = SERVICE(u); | |
4026 | ||
4027 | assert(s); | |
4028 | ||
4029 | /* We provide our own implementation of this here, instead of relying of the generic implementation | |
4030 | * unit_needs_console() provides, since we want to return false if we are in SERVICE_EXITED state. */ | |
4031 | ||
4032 | if (!exec_context_may_touch_console(&s->exec_context)) | |
4033 | return false; | |
4034 | ||
4035 | return IN_SET(s->state, | |
4036 | SERVICE_START_PRE, | |
4037 | SERVICE_START, | |
4038 | SERVICE_START_POST, | |
4039 | SERVICE_RUNNING, | |
4040 | SERVICE_RELOAD, | |
4041 | SERVICE_STOP, | |
c87700a1 | 4042 | SERVICE_STOP_WATCHDOG, |
bb2c7685 LP |
4043 | SERVICE_STOP_SIGTERM, |
4044 | SERVICE_STOP_SIGKILL, | |
4045 | SERVICE_STOP_POST, | |
4046 | SERVICE_FINAL_SIGTERM, | |
4047 | SERVICE_FINAL_SIGKILL); | |
4048 | } | |
4049 | ||
7af67e9a LP |
4050 | static int service_exit_status(Unit *u) { |
4051 | Service *s = SERVICE(u); | |
4052 | ||
4053 | assert(u); | |
4054 | ||
4055 | if (s->main_exec_status.pid <= 0 || | |
4056 | !dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) | |
4057 | return -ENODATA; | |
4058 | ||
4059 | if (s->main_exec_status.code != CLD_EXITED) | |
4060 | return -EBADE; | |
4061 | ||
4062 | return s->main_exec_status.status; | |
4063 | } | |
4064 | ||
94f04347 | 4065 | static const char* const service_restart_table[_SERVICE_RESTART_MAX] = { |
525ee6f4 LP |
4066 | [SERVICE_RESTART_NO] = "no", |
4067 | [SERVICE_RESTART_ON_SUCCESS] = "on-success", | |
50caaedb | 4068 | [SERVICE_RESTART_ON_FAILURE] = "on-failure", |
6cfe2fde | 4069 | [SERVICE_RESTART_ON_ABNORMAL] = "on-abnormal", |
dc99a976 | 4070 | [SERVICE_RESTART_ON_WATCHDOG] = "on-watchdog", |
50caaedb | 4071 | [SERVICE_RESTART_ON_ABORT] = "on-abort", |
6cfe2fde | 4072 | [SERVICE_RESTART_ALWAYS] = "always", |
94f04347 LP |
4073 | }; |
4074 | ||
4075 | DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart); | |
4076 | ||
4077 | static const char* const service_type_table[_SERVICE_TYPE_MAX] = { | |
94f04347 | 4078 | [SERVICE_SIMPLE] = "simple", |
0d624a78 | 4079 | [SERVICE_FORKING] = "forking", |
34e9ba66 | 4080 | [SERVICE_ONESHOT] = "oneshot", |
8c47c732 | 4081 | [SERVICE_DBUS] = "dbus", |
f2b68789 | 4082 | [SERVICE_NOTIFY] = "notify", |
5686391b LP |
4083 | [SERVICE_IDLE] = "idle", |
4084 | [SERVICE_EXEC] = "exec", | |
94f04347 LP |
4085 | }; |
4086 | ||
4087 | DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType); | |
4088 | ||
e537352b | 4089 | static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = { |
94f04347 LP |
4090 | [SERVICE_EXEC_START_PRE] = "ExecStartPre", |
4091 | [SERVICE_EXEC_START] = "ExecStart", | |
4092 | [SERVICE_EXEC_START_POST] = "ExecStartPost", | |
4093 | [SERVICE_EXEC_RELOAD] = "ExecReload", | |
4094 | [SERVICE_EXEC_STOP] = "ExecStop", | |
4095 | [SERVICE_EXEC_STOP_POST] = "ExecStopPost", | |
4096 | }; | |
4097 | ||
4098 | DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand); | |
4099 | ||
308d72dc LP |
4100 | static const char* const notify_state_table[_NOTIFY_STATE_MAX] = { |
4101 | [NOTIFY_UNKNOWN] = "unknown", | |
4102 | [NOTIFY_READY] = "ready", | |
4103 | [NOTIFY_RELOADING] = "reloading", | |
4104 | [NOTIFY_STOPPING] = "stopping", | |
4105 | }; | |
4106 | ||
4107 | DEFINE_STRING_TABLE_LOOKUP(notify_state, NotifyState); | |
4108 | ||
f42806df LP |
4109 | static const char* const service_result_table[_SERVICE_RESULT_MAX] = { |
4110 | [SERVICE_SUCCESS] = "success", | |
4111 | [SERVICE_FAILURE_RESOURCES] = "resources", | |
c35755fb | 4112 | [SERVICE_FAILURE_PROTOCOL] = "protocol", |
f42806df LP |
4113 | [SERVICE_FAILURE_TIMEOUT] = "timeout", |
4114 | [SERVICE_FAILURE_EXIT_CODE] = "exit-code", | |
4115 | [SERVICE_FAILURE_SIGNAL] = "signal", | |
bb242b7b | 4116 | [SERVICE_FAILURE_CORE_DUMP] = "core-dump", |
8d1b002a | 4117 | [SERVICE_FAILURE_WATCHDOG] = "watchdog", |
07299350 | 4118 | [SERVICE_FAILURE_START_LIMIT_HIT] = "start-limit-hit", |
f42806df LP |
4119 | }; |
4120 | ||
4121 | DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult); | |
4122 | ||
87f0e418 | 4123 | const UnitVTable service_vtable = { |
7d17cfbc | 4124 | .object_size = sizeof(Service), |
718db961 LP |
4125 | .exec_context_offset = offsetof(Service, exec_context), |
4126 | .cgroup_context_offset = offsetof(Service, cgroup_context), | |
4127 | .kill_context_offset = offsetof(Service, kill_context), | |
613b411c | 4128 | .exec_runtime_offset = offsetof(Service, exec_runtime), |
29206d46 | 4129 | .dynamic_creds_offset = offsetof(Service, dynamic_creds), |
3ef63c31 | 4130 | |
f975e971 LP |
4131 | .sections = |
4132 | "Unit\0" | |
4133 | "Service\0" | |
4134 | "Install\0", | |
4ad49000 | 4135 | .private_section = "Service", |
71645aca | 4136 | |
1d9cc876 LP |
4137 | .can_transient = true, |
4138 | .can_delegate = true, | |
4139 | ||
034c6ed7 LP |
4140 | .init = service_init, |
4141 | .done = service_done, | |
a16e1123 | 4142 | .load = service_load, |
a354329f | 4143 | .release_resources = service_release_resources, |
a16e1123 LP |
4144 | |
4145 | .coldplug = service_coldplug, | |
034c6ed7 | 4146 | |
5cb5a6ff LP |
4147 | .dump = service_dump, |
4148 | ||
4149 | .start = service_start, | |
4150 | .stop = service_stop, | |
4151 | .reload = service_reload, | |
4152 | ||
034c6ed7 LP |
4153 | .can_reload = service_can_reload, |
4154 | ||
8a0867d6 LP |
4155 | .kill = service_kill, |
4156 | ||
a16e1123 LP |
4157 | .serialize = service_serialize, |
4158 | .deserialize_item = service_deserialize_item, | |
4159 | ||
5cb5a6ff | 4160 | .active_state = service_active_state, |
10a94420 | 4161 | .sub_state_to_string = service_sub_state_to_string, |
5cb5a6ff | 4162 | |
deb4e708 MK |
4163 | .will_restart = service_will_restart, |
4164 | ||
f2f725e5 | 4165 | .may_gc = service_may_gc, |
701cc384 | 4166 | |
034c6ed7 | 4167 | .sigchld_event = service_sigchld_event, |
2c4104f0 | 4168 | |
fdf20a31 | 4169 | .reset_failed = service_reset_failed, |
5632e374 | 4170 | |
4ad49000 | 4171 | .notify_cgroup_empty = service_notify_cgroup_empty_event, |
8c47c732 | 4172 | .notify_message = service_notify_message, |
8e274523 | 4173 | |
291d565a LP |
4174 | .main_pid = service_main_pid, |
4175 | .control_pid = service_control_pid, | |
4176 | ||
05e343b7 | 4177 | .bus_name_owner_change = service_bus_name_owner_change, |
05e343b7 | 4178 | |
718db961 | 4179 | .bus_vtable = bus_service_vtable, |
74c964d3 LP |
4180 | .bus_set_property = bus_service_set_property, |
4181 | .bus_commit_properties = bus_service_commit_properties, | |
4139c1b2 | 4182 | |
68db7a3b | 4183 | .get_timeout = service_get_timeout, |
bb2c7685 | 4184 | .needs_console = service_needs_console, |
7af67e9a | 4185 | .exit_status = service_exit_status, |
718db961 | 4186 | |
c6918296 MS |
4187 | .status_message_formats = { |
4188 | .starting_stopping = { | |
4189 | [0] = "Starting %s...", | |
4190 | [1] = "Stopping %s...", | |
4191 | }, | |
4192 | .finished_start_job = { | |
4193 | [JOB_DONE] = "Started %s.", | |
4194 | [JOB_FAILED] = "Failed to start %s.", | |
c6918296 MS |
4195 | }, |
4196 | .finished_stop_job = { | |
4197 | [JOB_DONE] = "Stopped %s.", | |
4198 | [JOB_FAILED] = "Stopped (with error) %s.", | |
c6918296 MS |
4199 | }, |
4200 | }, | |
5cb5a6ff | 4201 | }; |