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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
a7334b09 | 2 | |
5cb5a6ff | 3 | #include <errno.h> |
ca78ad1d ZJS |
4 | #include <sys/stat.h> |
5 | #include <sys/types.h> | |
2c4104f0 | 6 | #include <unistd.h> |
5cb5a6ff | 7 | |
7a0019d3 LP |
8 | #include "sd-messages.h" |
9 | ||
b5efdb8a | 10 | #include "alloc-util.h" |
574634bc | 11 | #include "async.h" |
4f5dd394 LP |
12 | #include "bus-error.h" |
13 | #include "bus-kernel.h" | |
14 | #include "bus-util.h" | |
f4351959 | 15 | #include "chase-symlinks.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" |
4f5dd394 LP |
25 | #include "load-dropin.h" |
26 | #include "load-fragment.h" | |
27 | #include "log.h" | |
28 | #include "manager.h" | |
6bedfcbb | 29 | #include "parse-util.h" |
4f5dd394 | 30 | #include "path-util.h" |
0b452006 | 31 | #include "process-util.h" |
5918a933 | 32 | #include "random-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 | 47 | [SERVICE_DEAD] = UNIT_INACTIVE, |
31cd5f63 | 48 | [SERVICE_CONDITION] = UNIT_ACTIVATING, |
87f0e418 LP |
49 | [SERVICE_START_PRE] = UNIT_ACTIVATING, |
50 | [SERVICE_START] = UNIT_ACTIVATING, | |
51 | [SERVICE_START_POST] = UNIT_ACTIVATING, | |
52 | [SERVICE_RUNNING] = UNIT_ACTIVE, | |
80876c20 | 53 | [SERVICE_EXITED] = UNIT_ACTIVE, |
032ff4af | 54 | [SERVICE_RELOAD] = UNIT_RELOADING, |
87f0e418 | 55 | [SERVICE_STOP] = UNIT_DEACTIVATING, |
c87700a1 | 56 | [SERVICE_STOP_WATCHDOG] = UNIT_DEACTIVATING, |
87f0e418 LP |
57 | [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, |
58 | [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
59 | [SERVICE_STOP_POST] = UNIT_DEACTIVATING, | |
bf760801 | 60 | [SERVICE_FINAL_WATCHDOG] = UNIT_DEACTIVATING, |
87f0e418 LP |
61 | [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, |
62 | [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
fdf20a31 | 63 | [SERVICE_FAILED] = UNIT_FAILED, |
4c2f5842 LP |
64 | [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING, |
65 | [SERVICE_CLEANING] = UNIT_MAINTENANCE, | |
034c6ed7 | 66 | }; |
5cb5a6ff | 67 | |
e056b01d LP |
68 | /* For Type=idle we never want to delay any other jobs, hence we |
69 | * consider idle jobs active as soon as we start working on them */ | |
70 | static const UnitActiveState state_translation_table_idle[_SERVICE_STATE_MAX] = { | |
71 | [SERVICE_DEAD] = UNIT_INACTIVE, | |
31cd5f63 | 72 | [SERVICE_CONDITION] = UNIT_ACTIVE, |
e056b01d LP |
73 | [SERVICE_START_PRE] = UNIT_ACTIVE, |
74 | [SERVICE_START] = UNIT_ACTIVE, | |
75 | [SERVICE_START_POST] = UNIT_ACTIVE, | |
76 | [SERVICE_RUNNING] = UNIT_ACTIVE, | |
77 | [SERVICE_EXITED] = UNIT_ACTIVE, | |
78 | [SERVICE_RELOAD] = UNIT_RELOADING, | |
79 | [SERVICE_STOP] = UNIT_DEACTIVATING, | |
c87700a1 | 80 | [SERVICE_STOP_WATCHDOG] = UNIT_DEACTIVATING, |
e056b01d LP |
81 | [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, |
82 | [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
83 | [SERVICE_STOP_POST] = UNIT_DEACTIVATING, | |
bf760801 | 84 | [SERVICE_FINAL_WATCHDOG] = UNIT_DEACTIVATING, |
e056b01d LP |
85 | [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, |
86 | [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
87 | [SERVICE_FAILED] = UNIT_FAILED, | |
4c2f5842 LP |
88 | [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING, |
89 | [SERVICE_CLEANING] = UNIT_MAINTENANCE, | |
e056b01d LP |
90 | }; |
91 | ||
5686391b | 92 | static int service_dispatch_inotify_io(sd_event_source *source, int fd, uint32_t events, void *userdata); |
718db961 LP |
93 | static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); |
94 | static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata); | |
5686391b | 95 | static int service_dispatch_exec_io(sd_event_source *source, int fd, uint32_t events, void *userdata); |
718db961 | 96 | |
842129f5 | 97 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f); |
308d72dc | 98 | static void service_enter_reload_by_notify(Service *s); |
842129f5 | 99 | |
a16e1123 LP |
100 | static void service_init(Unit *u) { |
101 | Service *s = SERVICE(u); | |
102 | ||
103 | assert(u); | |
ac155bb8 | 104 | assert(u->load_state == UNIT_STUB); |
a16e1123 | 105 | |
1f19a534 OS |
106 | s->timeout_start_usec = u->manager->default_timeout_start_usec; |
107 | s->timeout_stop_usec = u->manager->default_timeout_stop_usec; | |
dc653bf4 JK |
108 | s->timeout_abort_usec = u->manager->default_timeout_abort_usec; |
109 | s->timeout_abort_set = u->manager->default_timeout_abort_set; | |
1f19a534 | 110 | s->restart_usec = u->manager->default_restart_usec; |
36c16a7c | 111 | s->runtime_max_usec = USEC_INFINITY; |
0b86feac | 112 | s->type = _SERVICE_TYPE_INVALID; |
a16e1123 | 113 | s->socket_fd = -1; |
a34ceba6 | 114 | s->stdin_fd = s->stdout_fd = s->stderr_fd = -1; |
3185a36b | 115 | s->guess_main_pid = true; |
a16e1123 | 116 | |
a16e1123 | 117 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; |
00f5ad93 LP |
118 | |
119 | s->exec_context.keyring_mode = MANAGER_IS_SYSTEM(u->manager) ? | |
120 | EXEC_KEYRING_PRIVATE : EXEC_KEYRING_INHERIT; | |
aa8c4bbf LP |
121 | |
122 | s->watchdog_original_usec = USEC_INFINITY; | |
afcfaa69 LP |
123 | |
124 | s->oom_policy = _OOM_POLICY_INVALID; | |
a16e1123 LP |
125 | } |
126 | ||
5e94833f LP |
127 | static void service_unwatch_control_pid(Service *s) { |
128 | assert(s); | |
129 | ||
130 | if (s->control_pid <= 0) | |
131 | return; | |
132 | ||
8f03de53 | 133 | unit_unwatch_pid(UNIT(s), TAKE_PID(s->control_pid)); |
5e94833f LP |
134 | } |
135 | ||
136 | static void service_unwatch_main_pid(Service *s) { | |
137 | assert(s); | |
138 | ||
139 | if (s->main_pid <= 0) | |
140 | return; | |
141 | ||
8f03de53 | 142 | unit_unwatch_pid(UNIT(s), TAKE_PID(s->main_pid)); |
5e94833f LP |
143 | } |
144 | ||
3e52541e MS |
145 | static void service_unwatch_pid_file(Service *s) { |
146 | if (!s->pid_file_pathspec) | |
147 | return; | |
148 | ||
f2341e0a | 149 | log_unit_debug(UNIT(s), "Stopping watch for PID file %s", s->pid_file_pathspec->path); |
718db961 | 150 | path_spec_unwatch(s->pid_file_pathspec); |
3e52541e | 151 | path_spec_done(s->pid_file_pathspec); |
a1e58e8e | 152 | s->pid_file_pathspec = mfree(s->pid_file_pathspec); |
3e52541e MS |
153 | } |
154 | ||
5925dd3c LP |
155 | static int service_set_main_pid(Service *s, pid_t pid) { |
156 | assert(s); | |
157 | ||
158 | if (pid <= 1) | |
159 | return -EINVAL; | |
160 | ||
df0ff127 | 161 | if (pid == getpid_cached()) |
5925dd3c LP |
162 | return -EINVAL; |
163 | ||
7400b9d2 LP |
164 | if (s->main_pid == pid && s->main_pid_known) |
165 | return 0; | |
166 | ||
167 | if (s->main_pid != pid) { | |
168 | service_unwatch_main_pid(s); | |
169 | exec_status_start(&s->main_exec_status, pid); | |
170 | } | |
41efeaec | 171 | |
6dfa5494 LP |
172 | s->main_pid = pid; |
173 | s->main_pid_known = true; | |
4d051546 | 174 | s->main_pid_alien = pid_is_my_child(pid) == 0; |
6dfa5494 | 175 | |
4d051546 | 176 | if (s->main_pid_alien) |
f2341e0a | 177 | 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 |
178 | |
179 | return 0; | |
180 | } | |
181 | ||
3e7a1f50 | 182 | void service_close_socket_fd(Service *s) { |
4f2d528d LP |
183 | assert(s); |
184 | ||
5cc3985e | 185 | /* Undo the effect of service_set_socket_fd(). */ |
4f2d528d | 186 | |
5cc3985e | 187 | s->socket_fd = asynchronous_close(s->socket_fd); |
6cf6bbc2 | 188 | |
5cc3985e LP |
189 | if (UNIT_ISSET(s->accept_socket)) { |
190 | socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket))); | |
191 | unit_ref_unset(&s->accept_socket); | |
192 | } | |
6cf6bbc2 LP |
193 | } |
194 | ||
a6927d7f MO |
195 | static void service_stop_watchdog(Service *s) { |
196 | assert(s); | |
197 | ||
5dcadb4c | 198 | s->watchdog_event_source = sd_event_source_disable_unref(s->watchdog_event_source); |
842129f5 | 199 | s->watchdog_timestamp = DUAL_TIMESTAMP_NULL; |
a6927d7f MO |
200 | } |
201 | ||
842129f5 | 202 | static void service_start_watchdog(Service *s) { |
2787d83c | 203 | usec_t watchdog_usec; |
9fb1cdb4 | 204 | int r; |
bb242b7b MO |
205 | |
206 | assert(s); | |
207 | ||
2787d83c | 208 | watchdog_usec = service_get_watchdog_usec(s); |
9fb1cdb4 LP |
209 | if (IN_SET(watchdog_usec, 0, USEC_INFINITY)) { |
210 | service_stop_watchdog(s); | |
bb242b7b | 211 | return; |
9fb1cdb4 | 212 | } |
bb242b7b | 213 | |
718db961 | 214 | if (s->watchdog_event_source) { |
2787d83c | 215 | r = sd_event_source_set_time(s->watchdog_event_source, usec_add(s->watchdog_timestamp.monotonic, watchdog_usec)); |
718db961 | 216 | if (r < 0) { |
f2341e0a | 217 | log_unit_warning_errno(UNIT(s), r, "Failed to reset watchdog timer: %m"); |
718db961 LP |
218 | return; |
219 | } | |
220 | ||
842129f5 | 221 | r = sd_event_source_set_enabled(s->watchdog_event_source, SD_EVENT_ONESHOT); |
c4ef3317 | 222 | } else { |
6a0f1f6d LP |
223 | r = sd_event_add_time( |
224 | UNIT(s)->manager->event, | |
225 | &s->watchdog_event_source, | |
226 | CLOCK_MONOTONIC, | |
2787d83c | 227 | usec_add(s->watchdog_timestamp.monotonic, watchdog_usec), 0, |
6a0f1f6d | 228 | service_dispatch_watchdog, s); |
c4ef3317 | 229 | if (r < 0) { |
f2341e0a | 230 | log_unit_warning_errno(UNIT(s), r, "Failed to add watchdog timer: %m"); |
c4ef3317 LP |
231 | return; |
232 | } | |
233 | ||
7dfbe2e3 TG |
234 | (void) sd_event_source_set_description(s->watchdog_event_source, "service-watchdog"); |
235 | ||
c4ef3317 LP |
236 | /* Let's process everything else which might be a sign |
237 | * of living before we consider a service died. */ | |
238 | r = sd_event_source_set_priority(s->watchdog_event_source, SD_EVENT_PRIORITY_IDLE); | |
239 | } | |
bb242b7b | 240 | if (r < 0) |
f2341e0a | 241 | log_unit_warning_errno(UNIT(s), r, "Failed to install watchdog timer: %m"); |
bb242b7b MO |
242 | } |
243 | ||
ec35a7f6 LP |
244 | static void service_extend_event_source_timeout(Service *s, sd_event_source *source, usec_t extended) { |
245 | usec_t current; | |
246 | int r; | |
247 | ||
a327431b DB |
248 | assert(s); |
249 | ||
ec35a7f6 LP |
250 | /* Extends the specified event source timer to at least the specified time, unless it is already later |
251 | * anyway. */ | |
a327431b | 252 | |
ec35a7f6 LP |
253 | if (!source) |
254 | return; | |
a327431b | 255 | |
ec35a7f6 LP |
256 | r = sd_event_source_get_time(source, ¤t); |
257 | if (r < 0) { | |
258 | const char *desc; | |
259 | (void) sd_event_source_get_description(s->timer_event_source, &desc); | |
260 | log_unit_warning_errno(UNIT(s), r, "Failed to retrieve timeout time for event source '%s', ignoring: %m", strna(desc)); | |
261 | return; | |
262 | } | |
a327431b | 263 | |
ec35a7f6 LP |
264 | if (current >= extended) /* Current timeout is already longer, ignore this. */ |
265 | return; | |
a327431b | 266 | |
ec35a7f6 LP |
267 | r = sd_event_source_set_time(source, extended); |
268 | if (r < 0) { | |
269 | const char *desc; | |
270 | (void) sd_event_source_get_description(s->timer_event_source, &desc); | |
271 | log_unit_warning_errno(UNIT(s), r, "Failed to set timeout time for even source '%s', ignoring %m", strna(desc)); | |
a327431b DB |
272 | } |
273 | } | |
274 | ||
ec35a7f6 LP |
275 | static void service_extend_timeout(Service *s, usec_t extend_timeout_usec) { |
276 | usec_t extended; | |
277 | ||
278 | assert(s); | |
279 | ||
280 | if (IN_SET(extend_timeout_usec, 0, USEC_INFINITY)) | |
281 | return; | |
282 | ||
283 | extended = usec_add(now(CLOCK_MONOTONIC), extend_timeout_usec); | |
284 | ||
285 | service_extend_event_source_timeout(s, s->timer_event_source, extended); | |
286 | service_extend_event_source_timeout(s, s->watchdog_event_source, extended); | |
287 | } | |
288 | ||
a6927d7f MO |
289 | static void service_reset_watchdog(Service *s) { |
290 | assert(s); | |
291 | ||
292 | dual_timestamp_get(&s->watchdog_timestamp); | |
842129f5 | 293 | service_start_watchdog(s); |
a6927d7f MO |
294 | } |
295 | ||
95d0d8ed | 296 | static void service_override_watchdog_timeout(Service *s, usec_t watchdog_override_usec) { |
2787d83c M |
297 | assert(s); |
298 | ||
299 | s->watchdog_override_enable = true; | |
300 | s->watchdog_override_usec = watchdog_override_usec; | |
301 | service_reset_watchdog(s); | |
302 | ||
303 | log_unit_debug(UNIT(s), "watchdog_usec="USEC_FMT, s->watchdog_usec); | |
304 | log_unit_debug(UNIT(s), "watchdog_override_usec="USEC_FMT, s->watchdog_override_usec); | |
305 | } | |
306 | ||
a354329f LP |
307 | static void service_fd_store_unlink(ServiceFDStore *fs) { |
308 | ||
309 | if (!fs) | |
310 | return; | |
311 | ||
312 | if (fs->service) { | |
313 | assert(fs->service->n_fd_store > 0); | |
314 | LIST_REMOVE(fd_store, fs->service->fd_store, fs); | |
315 | fs->service->n_fd_store--; | |
316 | } | |
317 | ||
1d3fe304 | 318 | sd_event_source_disable_unref(fs->event_source); |
a354329f | 319 | |
8dd4c05b | 320 | free(fs->fdname); |
a354329f LP |
321 | safe_close(fs->fd); |
322 | free(fs); | |
323 | } | |
324 | ||
f0bfbfac ZJS |
325 | static void service_release_fd_store(Service *s) { |
326 | assert(s); | |
327 | ||
7eb2a8a1 LP |
328 | if (s->n_keep_fd_store > 0) |
329 | return; | |
330 | ||
f0bfbfac ZJS |
331 | log_unit_debug(UNIT(s), "Releasing all stored fds"); |
332 | while (s->fd_store) | |
333 | service_fd_store_unlink(s->fd_store); | |
334 | ||
335 | assert(s->n_fd_store == 0); | |
336 | } | |
337 | ||
7eb2a8a1 | 338 | static void service_release_resources(Unit *u) { |
a354329f LP |
339 | Service *s = SERVICE(u); |
340 | ||
341 | assert(s); | |
342 | ||
a34ceba6 | 343 | if (!s->fd_store && s->stdin_fd < 0 && s->stdout_fd < 0 && s->stderr_fd < 0) |
a354329f LP |
344 | return; |
345 | ||
f0bfbfac | 346 | log_unit_debug(u, "Releasing resources."); |
a354329f | 347 | |
a34ceba6 LP |
348 | s->stdin_fd = safe_close(s->stdin_fd); |
349 | s->stdout_fd = safe_close(s->stdout_fd); | |
350 | s->stderr_fd = safe_close(s->stderr_fd); | |
351 | ||
7eb2a8a1 | 352 | service_release_fd_store(s); |
a354329f LP |
353 | } |
354 | ||
87f0e418 LP |
355 | static void service_done(Unit *u) { |
356 | Service *s = SERVICE(u); | |
44d8db9e LP |
357 | |
358 | assert(s); | |
359 | ||
a1e58e8e LP |
360 | s->pid_file = mfree(s->pid_file); |
361 | s->status_text = mfree(s->status_text); | |
efe6e7d3 | 362 | |
e8a565cb | 363 | s->exec_runtime = exec_runtime_unref(s->exec_runtime, false); |
e537352b | 364 | exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); |
44d8db9e | 365 | s->control_command = NULL; |
867b3b7d | 366 | s->main_command = NULL; |
44d8db9e | 367 | |
29206d46 LP |
368 | dynamic_creds_unref(&s->dynamic_creds); |
369 | ||
37520c1b LP |
370 | exit_status_set_free(&s->restart_prevent_status); |
371 | exit_status_set_free(&s->restart_force_status); | |
372 | exit_status_set_free(&s->success_status); | |
96342de6 | 373 | |
44d8db9e LP |
374 | /* This will leak a process, but at least no memory or any of |
375 | * our resources */ | |
5e94833f LP |
376 | service_unwatch_main_pid(s); |
377 | service_unwatch_control_pid(s); | |
3e52541e | 378 | service_unwatch_pid_file(s); |
44d8db9e | 379 | |
05e343b7 | 380 | if (s->bus_name) { |
ac155bb8 | 381 | unit_unwatch_bus_name(u, s->bus_name); |
a1e58e8e | 382 | s->bus_name = mfree(s->bus_name); |
05e343b7 LP |
383 | } |
384 | ||
d8ccf5fd DM |
385 | s->bus_name_owner = mfree(s->bus_name_owner); |
386 | ||
064c5938 ZJS |
387 | s->usb_function_descriptors = mfree(s->usb_function_descriptors); |
388 | s->usb_function_strings = mfree(s->usb_function_strings); | |
389 | ||
4f2d528d | 390 | service_close_socket_fd(s); |
9d565427 | 391 | s->peer = socket_peer_unref(s->peer); |
4f2d528d | 392 | |
57020a3a | 393 | unit_ref_unset(&s->accept_socket); |
f976f3f6 | 394 | |
bb242b7b MO |
395 | service_stop_watchdog(s); |
396 | ||
5dcadb4c ZJS |
397 | s->timer_event_source = sd_event_source_disable_unref(s->timer_event_source); |
398 | s->exec_fd_event_source = sd_event_source_disable_unref(s->exec_fd_event_source); | |
a354329f | 399 | |
7eb2a8a1 | 400 | service_release_resources(u); |
718db961 LP |
401 | } |
402 | ||
2339fc93 LP |
403 | static int on_fd_store_io(sd_event_source *e, int fd, uint32_t revents, void *userdata) { |
404 | ServiceFDStore *fs = userdata; | |
405 | ||
406 | assert(e); | |
407 | assert(fs); | |
408 | ||
409 | /* If we get either EPOLLHUP or EPOLLERR, it's time to remove this entry from the fd store */ | |
16f70d63 ZJS |
410 | log_unit_debug(UNIT(fs->service), |
411 | "Received %s on stored fd %d (%s), closing.", | |
412 | revents & EPOLLERR ? "EPOLLERR" : "EPOLLHUP", | |
413 | fs->fd, strna(fs->fdname)); | |
2339fc93 LP |
414 | service_fd_store_unlink(fs); |
415 | return 0; | |
416 | } | |
417 | ||
cb5a46b8 | 418 | static int service_add_fd_store(Service *s, int fd, const char *name, bool do_poll) { |
2339fc93 LP |
419 | ServiceFDStore *fs; |
420 | int r; | |
421 | ||
9021ff17 ZJS |
422 | /* fd is always consumed if we return >= 0 */ |
423 | ||
2339fc93 LP |
424 | assert(s); |
425 | assert(fd >= 0); | |
426 | ||
427 | if (s->n_fd_store >= s->n_fd_store_max) | |
b0924635 ZJS |
428 | return -EXFULL; /* Our store is full. |
429 | * Use this errno rather than E[NM]FILE to distinguish from | |
430 | * the case where systemd itself hits the file limit. */ | |
2339fc93 LP |
431 | |
432 | LIST_FOREACH(fd_store, fs, s->fd_store) { | |
433 | r = same_fd(fs->fd, fd); | |
434 | if (r < 0) | |
435 | return r; | |
436 | if (r > 0) { | |
2339fc93 | 437 | safe_close(fd); |
9021ff17 | 438 | return 0; /* fd already included */ |
2339fc93 LP |
439 | } |
440 | } | |
441 | ||
b0cea477 | 442 | fs = new(ServiceFDStore, 1); |
2339fc93 LP |
443 | if (!fs) |
444 | return -ENOMEM; | |
445 | ||
b0cea477 LP |
446 | *fs = (ServiceFDStore) { |
447 | .fd = fd, | |
448 | .service = s, | |
449 | .do_poll = do_poll, | |
450 | .fdname = strdup(name ?: "stored"), | |
451 | }; | |
452 | ||
17dec0f7 | 453 | if (!fs->fdname) { |
454 | free(fs); | |
8dd4c05b | 455 | return -ENOMEM; |
17dec0f7 | 456 | } |
2339fc93 | 457 | |
cb5a46b8 KL |
458 | if (do_poll) { |
459 | r = sd_event_add_io(UNIT(s)->manager->event, &fs->event_source, fd, 0, on_fd_store_io, fs); | |
460 | if (r < 0 && r != -EPERM) { /* EPERM indicates fds that aren't pollable, which is OK */ | |
461 | free(fs->fdname); | |
462 | free(fs); | |
463 | return r; | |
464 | } else if (r >= 0) | |
465 | (void) sd_event_source_set_description(fs->event_source, "service-fd-store"); | |
466 | } | |
7dfbe2e3 | 467 | |
2339fc93 LP |
468 | LIST_PREPEND(fd_store, s->fd_store, fs); |
469 | s->n_fd_store++; | |
470 | ||
9021ff17 | 471 | return 1; /* fd newly stored */ |
2339fc93 LP |
472 | } |
473 | ||
cb5a46b8 | 474 | static int service_add_fd_store_set(Service *s, FDSet *fds, const char *name, bool do_poll) { |
2339fc93 LP |
475 | int r; |
476 | ||
477 | assert(s); | |
478 | ||
b0924635 | 479 | while (fdset_size(fds) > 0) { |
2339fc93 LP |
480 | _cleanup_close_ int fd = -1; |
481 | ||
482 | fd = fdset_steal_first(fds); | |
483 | if (fd < 0) | |
484 | break; | |
485 | ||
cb5a46b8 | 486 | r = service_add_fd_store(s, fd, name, do_poll); |
b0924635 ZJS |
487 | if (r == -EXFULL) |
488 | return log_unit_warning_errno(UNIT(s), r, | |
489 | "Cannot store more fds than FileDescriptorStoreMax=%u, closing remaining.", | |
490 | s->n_fd_store_max); | |
2339fc93 | 491 | if (r < 0) |
b0924635 | 492 | return log_unit_error_errno(UNIT(s), r, "Failed to add fd to store: %m"); |
9021ff17 | 493 | if (r > 0) |
16f70d63 | 494 | log_unit_debug(UNIT(s), "Added fd %u (%s) to fd store.", fd, strna(name)); |
9021ff17 | 495 | fd = -1; |
2339fc93 LP |
496 | } |
497 | ||
2339fc93 LP |
498 | return 0; |
499 | } | |
500 | ||
e78ee06d LP |
501 | static void service_remove_fd_store(Service *s, const char *name) { |
502 | ServiceFDStore *fs, *n; | |
503 | ||
504 | assert(s); | |
505 | assert(name); | |
506 | ||
507 | LIST_FOREACH_SAFE(fd_store, fs, n, s->fd_store) { | |
508 | if (!streq(fs->fdname, name)) | |
509 | continue; | |
510 | ||
511 | log_unit_debug(UNIT(s), "Got explicit request to remove fd %i (%s), closing.", fs->fd, name); | |
512 | service_fd_store_unlink(fs); | |
513 | } | |
514 | } | |
515 | ||
ecea250d | 516 | static usec_t service_running_timeout(Service *s) { |
5918a933 AB |
517 | usec_t delta = 0; |
518 | ||
519 | assert(s); | |
520 | ||
521 | if (s->runtime_rand_extra_usec != 0) { | |
522 | delta = random_u64_range(s->runtime_rand_extra_usec); | |
523 | log_unit_debug(UNIT(s), "Adding delta of %s sec to timeout", FORMAT_TIMESPAN(delta, USEC_PER_SEC)); | |
524 | } | |
525 | ||
526 | return usec_add(usec_add(UNIT(s)->active_enter_timestamp.monotonic, | |
527 | s->runtime_max_usec), | |
528 | delta); | |
529 | } | |
530 | ||
718db961 LP |
531 | static int service_arm_timer(Service *s, usec_t usec) { |
532 | int r; | |
533 | ||
534 | assert(s); | |
535 | ||
718db961 | 536 | if (s->timer_event_source) { |
36c16a7c | 537 | r = sd_event_source_set_time(s->timer_event_source, usec); |
718db961 LP |
538 | if (r < 0) |
539 | return r; | |
540 | ||
541 | return sd_event_source_set_enabled(s->timer_event_source, SD_EVENT_ONESHOT); | |
542 | } | |
543 | ||
36c16a7c LP |
544 | if (usec == USEC_INFINITY) |
545 | return 0; | |
546 | ||
7dfbe2e3 | 547 | r = sd_event_add_time( |
6a0f1f6d LP |
548 | UNIT(s)->manager->event, |
549 | &s->timer_event_source, | |
550 | CLOCK_MONOTONIC, | |
36c16a7c | 551 | usec, 0, |
6a0f1f6d | 552 | service_dispatch_timer, s); |
7dfbe2e3 TG |
553 | if (r < 0) |
554 | return r; | |
555 | ||
556 | (void) sd_event_source_set_description(s->timer_event_source, "service-timer"); | |
557 | ||
558 | return 0; | |
44d8db9e LP |
559 | } |
560 | ||
243b1432 LP |
561 | static int service_verify(Service *s) { |
562 | assert(s); | |
e0cfed4c | 563 | assert(UNIT(s)->load_state == UNIT_LOADED); |
243b1432 | 564 | |
29500cf8 HC |
565 | for (ServiceExecCommand c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) { |
566 | ExecCommand *command; | |
567 | ||
8688a389 YW |
568 | LIST_FOREACH(command, command, s->exec_command[c]) { |
569 | if (!path_is_absolute(command->path) && !filename_is_valid(command->path)) | |
570 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENOEXEC), | |
571 | "Service %s= binary path \"%s\" is neither a valid executable name nor an absolute path. Refusing.", | |
572 | command->path, | |
573 | service_exec_command_to_string(c)); | |
29500cf8 HC |
574 | if (strv_isempty(command->argv)) |
575 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENOEXEC), | |
576 | "Service has an empty argv in %s=. Refusing.", | |
577 | service_exec_command_to_string(c)); | |
8688a389 | 578 | } |
29500cf8 HC |
579 | } |
580 | ||
d85ff944 YW |
581 | if (!s->exec_command[SERVICE_EXEC_START] && !s->exec_command[SERVICE_EXEC_STOP] && |
582 | UNIT(s)->success_action == EMERGENCY_ACTION_NONE) | |
3f00d379 ZJS |
583 | /* FailureAction= only makes sense if one of the start or stop commands is specified. |
584 | * SuccessAction= will be executed unconditionally if no commands are specified. Hence, | |
585 | * either a command or SuccessAction= are required. */ | |
586 | ||
d85ff944 | 587 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENOEXEC), "Service has no ExecStart=, ExecStop=, or SuccessAction=. Refusing."); |
243b1432 | 588 | |
d85ff944 YW |
589 | if (s->type != SERVICE_ONESHOT && !s->exec_command[SERVICE_EXEC_START]) |
590 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENOEXEC), "Service has no ExecStart= setting, which is only allowed for Type=oneshot services. Refusing."); | |
96fb8242 | 591 | |
d85ff944 YW |
592 | if (!s->remain_after_exit && !s->exec_command[SERVICE_EXEC_START] && UNIT(s)->success_action == EMERGENCY_ACTION_NONE) |
593 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENOEXEC), "Service has no ExecStart= and no SuccessAction= settings and does not have RemainAfterExit=yes set. Refusing."); | |
96fb8242 | 594 | |
d85ff944 YW |
595 | if (s->type != SERVICE_ONESHOT && s->exec_command[SERVICE_EXEC_START]->command_next) |
596 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENOEXEC), "Service has more than one ExecStart= setting, which is only allowed for Type=oneshot services. Refusing."); | |
6cf6bbc2 | 597 | |
d85ff944 YW |
598 | if (s->type == SERVICE_ONESHOT && |
599 | !IN_SET(s->restart, SERVICE_RESTART_NO, SERVICE_RESTART_ON_FAILURE, SERVICE_RESTART_ON_ABNORMAL, SERVICE_RESTART_ON_WATCHDOG, SERVICE_RESTART_ON_ABORT)) | |
600 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENOEXEC), "Service has Restart= set to either always or on-success, which isn't allowed for Type=oneshot services. Refusing."); | |
37520c1b | 601 | |
d85ff944 YW |
602 | if (s->type == SERVICE_ONESHOT && !exit_status_set_is_empty(&s->restart_force_status)) |
603 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENOEXEC), "Service has RestartForceStatus= set, which isn't allowed for Type=oneshot services. Refusing."); | |
b0693d30 | 604 | |
d85ff944 YW |
605 | if (s->type == SERVICE_DBUS && !s->bus_name) |
606 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENOEXEC), "Service is of type D-Bus but no D-Bus service name has been specified. Refusing."); | |
4d0e5dbd | 607 | |
d85ff944 YW |
608 | if (s->exec_context.pam_name && !IN_SET(s->kill_context.kill_mode, KILL_CONTROL_GROUP, KILL_MIXED)) |
609 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENOEXEC), "Service has PAM enabled. Kill mode must be set to 'control-group' or 'mixed'. Refusing."); | |
05e343b7 | 610 | |
6b7e5923 PS |
611 | if (s->usb_function_descriptors && !s->usb_function_strings) |
612 | log_unit_warning(UNIT(s), "Service has USBFunctionDescriptors= setting, but no USBFunctionStrings=. Ignoring."); | |
613 | ||
614 | if (!s->usb_function_descriptors && s->usb_function_strings) | |
615 | log_unit_warning(UNIT(s), "Service has USBFunctionStrings= setting, but no USBFunctionDescriptors=. Ignoring."); | |
616 | ||
36c16a7c | 617 | if (s->runtime_max_usec != USEC_INFINITY && s->type == SERVICE_ONESHOT) |
226a08f2 | 618 | log_unit_warning(UNIT(s), "RuntimeMaxSec= has no effect in combination with Type=oneshot. Ignoring."); |
36c16a7c | 619 | |
5918a933 AB |
620 | if (s->runtime_max_usec == USEC_INFINITY && s->runtime_rand_extra_usec != 0) |
621 | log_unit_warning(UNIT(s), "Service has RuntimeRandomizedExtraSec= setting, but no RuntimeMaxSec=. Ignoring."); | |
622 | ||
243b1432 LP |
623 | return 0; |
624 | } | |
625 | ||
a40eb732 LP |
626 | static int service_add_default_dependencies(Service *s) { |
627 | int r; | |
628 | ||
629 | assert(s); | |
630 | ||
45f06b34 LP |
631 | if (!UNIT(s)->default_dependencies) |
632 | return 0; | |
633 | ||
a40eb732 LP |
634 | /* Add a number of automatic dependencies useful for the |
635 | * majority of services. */ | |
636 | ||
463d0d15 | 637 | if (MANAGER_IS_SYSTEM(UNIT(s)->manager)) { |
cb4c247d LP |
638 | /* First, pull in the really early boot stuff, and |
639 | * require it, so that we fail if we can't acquire | |
640 | * it. */ | |
641 | ||
5a724170 | 642 | r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
cb4c247d LP |
643 | if (r < 0) |
644 | return r; | |
645 | } else { | |
646 | ||
647 | /* In the --user instance there's no sysinit.target, | |
648 | * in that case require basic.target instead. */ | |
649 | ||
35d8c19a | 650 | r = unit_add_dependency_by_name(UNIT(s), UNIT_REQUIRES, SPECIAL_BASIC_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
cb4c247d LP |
651 | if (r < 0) |
652 | return r; | |
653 | } | |
654 | ||
655 | /* Second, if the rest of the base system is in the same | |
656 | * transaction, order us after it, but do not pull it in or | |
657 | * even require it. */ | |
35d8c19a | 658 | r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_BASIC_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
fccd44ec KS |
659 | if (r < 0) |
660 | return r; | |
a40eb732 | 661 | |
cb4c247d | 662 | /* Third, add us in for normal shutdown. */ |
5a724170 | 663 | return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
a40eb732 LP |
664 | } |
665 | ||
3b7f79dc | 666 | static void service_fix_stdio(Service *s) { |
4dfc092a LP |
667 | assert(s); |
668 | ||
3b7f79dc LP |
669 | /* Note that EXEC_INPUT_NULL and EXEC_OUTPUT_INHERIT play a special role here: they are both the |
670 | * default value that is subject to automatic overriding triggered by other settings and an explicit | |
162392b7 | 671 | * choice the user can make. We don't distinguish between these cases currently. */ |
3b7f79dc LP |
672 | |
673 | if (s->exec_context.std_input == EXEC_INPUT_NULL && | |
674 | s->exec_context.stdin_data_size > 0) | |
675 | s->exec_context.std_input = EXEC_INPUT_DATA; | |
676 | ||
677 | if (IN_SET(s->exec_context.std_input, | |
678 | EXEC_INPUT_TTY, | |
679 | EXEC_INPUT_TTY_FORCE, | |
680 | EXEC_INPUT_TTY_FAIL, | |
681 | EXEC_INPUT_SOCKET, | |
682 | EXEC_INPUT_NAMED_FD)) | |
683 | return; | |
684 | ||
685 | /* We assume these listed inputs refer to bidirectional streams, and hence duplicating them from | |
686 | * stdin to stdout/stderr makes sense and hence leaving EXEC_OUTPUT_INHERIT in place makes sense, | |
687 | * too. Outputs such as regular files or sealed data memfds otoh don't really make sense to be | |
688 | * duplicated for both input and output at the same time (since they then would cause a feedback | |
689 | * loop), hence override EXEC_OUTPUT_INHERIT with the default stderr/stdout setting. */ | |
4dfc092a LP |
690 | |
691 | if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT && | |
3b7f79dc | 692 | s->exec_context.std_output == EXEC_OUTPUT_INHERIT) |
1124fe6f | 693 | s->exec_context.std_error = UNIT(s)->manager->default_std_error; |
4dfc092a | 694 | |
3b7f79dc | 695 | if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT) |
1124fe6f | 696 | s->exec_context.std_output = UNIT(s)->manager->default_std_output; |
4dfc092a LP |
697 | } |
698 | ||
45f06b34 LP |
699 | static int service_setup_bus_name(Service *s) { |
700 | int r; | |
701 | ||
702 | assert(s); | |
703 | ||
0f97b7c3 YW |
704 | /* If s->bus_name is not set, then the unit will be refused by service_verify() later. */ |
705 | if (s->type != SERVICE_DBUS || !s->bus_name) | |
45f06b34 LP |
706 | return 0; |
707 | ||
35d8c19a | 708 | r = unit_add_dependency_by_name(UNIT(s), UNIT_REQUIRES, SPECIAL_DBUS_SOCKET, true, UNIT_DEPENDENCY_FILE); |
222953e8 DR |
709 | if (r < 0) |
710 | return log_unit_error_errno(UNIT(s), r, "Failed to add dependency on " SPECIAL_DBUS_SOCKET ": %m"); | |
45f06b34 | 711 | |
a132bef0 | 712 | /* We always want to be ordered against dbus.socket if both are in the transaction. */ |
35d8c19a | 713 | r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_DBUS_SOCKET, true, UNIT_DEPENDENCY_FILE); |
45f06b34 | 714 | if (r < 0) |
92bed462 | 715 | return log_unit_error_errno(UNIT(s), r, "Failed to add dependency on " SPECIAL_DBUS_SOCKET ": %m"); |
45f06b34 LP |
716 | |
717 | r = unit_watch_bus_name(UNIT(s), s->bus_name); | |
718 | if (r == -EEXIST) | |
719 | return log_unit_error_errno(UNIT(s), r, "Two services allocated for the same bus name %s, refusing operation.", s->bus_name); | |
720 | if (r < 0) | |
721 | return log_unit_error_errno(UNIT(s), r, "Cannot watch bus name %s: %m", s->bus_name); | |
722 | ||
723 | return 0; | |
724 | } | |
725 | ||
8545f7ce LP |
726 | static int service_add_extras(Service *s) { |
727 | int r; | |
728 | ||
729 | assert(s); | |
730 | ||
731 | if (s->type == _SERVICE_TYPE_INVALID) { | |
732 | /* Figure out a type automatically */ | |
733 | if (s->bus_name) | |
734 | s->type = SERVICE_DBUS; | |
735 | else if (s->exec_command[SERVICE_EXEC_START]) | |
736 | s->type = SERVICE_SIMPLE; | |
737 | else | |
738 | s->type = SERVICE_ONESHOT; | |
739 | } | |
740 | ||
741 | /* Oneshot services have disabled start timeout by default */ | |
742 | if (s->type == SERVICE_ONESHOT && !s->start_timeout_defined) | |
36c16a7c | 743 | s->timeout_start_usec = USEC_INFINITY; |
8545f7ce | 744 | |
3b7f79dc | 745 | service_fix_stdio(s); |
8545f7ce LP |
746 | |
747 | r = unit_patch_contexts(UNIT(s)); | |
748 | if (r < 0) | |
749 | return r; | |
750 | ||
751 | r = unit_add_exec_dependencies(UNIT(s), &s->exec_context); | |
752 | if (r < 0) | |
753 | return r; | |
754 | ||
d79200e2 | 755 | r = unit_set_default_slice(UNIT(s)); |
8545f7ce LP |
756 | if (r < 0) |
757 | return r; | |
758 | ||
4330dc03 AJ |
759 | /* If the service needs the notify socket, let's enable it automatically. */ |
760 | if (s->notify_access == NOTIFY_NONE && | |
761 | (s->type == SERVICE_NOTIFY || s->watchdog_usec > 0 || s->n_fd_store_max > 0)) | |
8545f7ce LP |
762 | s->notify_access = NOTIFY_MAIN; |
763 | ||
afcfaa69 LP |
764 | /* If no OOM policy was explicitly set, then default to the configure default OOM policy. Except when |
765 | * delegation is on, in that case it we assume the payload knows better what to do and can process | |
5238e957 | 766 | * things in a more focused way. */ |
afcfaa69 LP |
767 | if (s->oom_policy < 0) |
768 | s->oom_policy = s->cgroup_context.delegate ? OOM_CONTINUE : UNIT(s)->manager->default_oom_policy; | |
769 | ||
770 | /* Let the kernel do the killing if that's requested. */ | |
771 | s->cgroup_context.memory_oom_group = s->oom_policy == OOM_KILL; | |
772 | ||
45f06b34 LP |
773 | r = service_add_default_dependencies(s); |
774 | if (r < 0) | |
775 | return r; | |
8545f7ce | 776 | |
45f06b34 LP |
777 | r = service_setup_bus_name(s); |
778 | if (r < 0) | |
779 | return r; | |
8545f7ce LP |
780 | |
781 | return 0; | |
782 | } | |
783 | ||
e537352b | 784 | static int service_load(Unit *u) { |
e537352b | 785 | Service *s = SERVICE(u); |
8bb2d17d | 786 | int r; |
e537352b | 787 | |
e0cfed4c | 788 | r = unit_load_fragment_and_dropin(u, true); |
c2756a68 | 789 | if (r < 0) |
5cb5a6ff LP |
790 | return r; |
791 | ||
e0cfed4c ZJS |
792 | if (u->load_state != UNIT_LOADED) |
793 | return 0; | |
034c6ed7 | 794 | |
23a177ef | 795 | /* This is a new unit? Then let's add in some extras */ |
e0cfed4c ZJS |
796 | r = service_add_extras(s); |
797 | if (r < 0) | |
798 | return r; | |
8e274523 | 799 | |
243b1432 | 800 | return service_verify(s); |
034c6ed7 LP |
801 | } |
802 | ||
87f0e418 | 803 | static void service_dump(Unit *u, FILE *f, const char *prefix) { |
5cb5a6ff | 804 | ServiceExecCommand c; |
87f0e418 | 805 | Service *s = SERVICE(u); |
47be870b | 806 | const char *prefix2; |
5cb5a6ff LP |
807 | |
808 | assert(s); | |
809 | ||
4c940960 | 810 | prefix = strempty(prefix); |
63c372cb | 811 | prefix2 = strjoina(prefix, "\t"); |
44d8db9e | 812 | |
5cb5a6ff | 813 | fprintf(f, |
81a2b7ce | 814 | "%sService State: %s\n" |
f42806df LP |
815 | "%sResult: %s\n" |
816 | "%sReload Result: %s\n" | |
4c2f5842 | 817 | "%sClean Result: %s\n" |
81a2b7ce | 818 | "%sPermissionsStartOnly: %s\n" |
8e274523 | 819 | "%sRootDirectoryStartOnly: %s\n" |
02ee865a | 820 | "%sRemainAfterExit: %s\n" |
3185a36b | 821 | "%sGuessMainPID: %s\n" |
c952c6ec | 822 | "%sType: %s\n" |
2cf3143a | 823 | "%sRestart: %s\n" |
308d72dc | 824 | "%sNotifyAccess: %s\n" |
afcfaa69 LP |
825 | "%sNotifyState: %s\n" |
826 | "%sOOMPolicy: %s\n", | |
81a2b7ce | 827 | prefix, service_state_to_string(s->state), |
f42806df LP |
828 | prefix, service_result_to_string(s->result), |
829 | prefix, service_result_to_string(s->reload_result), | |
4c2f5842 | 830 | prefix, service_result_to_string(s->clean_result), |
81a2b7ce | 831 | prefix, yes_no(s->permissions_start_only), |
8e274523 | 832 | prefix, yes_no(s->root_directory_start_only), |
02ee865a | 833 | prefix, yes_no(s->remain_after_exit), |
3185a36b | 834 | prefix, yes_no(s->guess_main_pid), |
c952c6ec | 835 | prefix, service_type_to_string(s->type), |
2cf3143a | 836 | prefix, service_restart_to_string(s->restart), |
308d72dc | 837 | prefix, notify_access_to_string(s->notify_access), |
afcfaa69 LP |
838 | prefix, notify_state_to_string(s->notify_state), |
839 | prefix, oom_policy_to_string(s->oom_policy)); | |
5cb5a6ff | 840 | |
70123e68 LP |
841 | if (s->control_pid > 0) |
842 | fprintf(f, | |
ccd06097 ZJS |
843 | "%sControl PID: "PID_FMT"\n", |
844 | prefix, s->control_pid); | |
70123e68 LP |
845 | |
846 | if (s->main_pid > 0) | |
847 | fprintf(f, | |
ccd06097 | 848 | "%sMain PID: "PID_FMT"\n" |
6dfa5494 LP |
849 | "%sMain PID Known: %s\n" |
850 | "%sMain PID Alien: %s\n", | |
ccd06097 | 851 | prefix, s->main_pid, |
6dfa5494 LP |
852 | prefix, yes_no(s->main_pid_known), |
853 | prefix, yes_no(s->main_pid_alien)); | |
70123e68 | 854 | |
034c6ed7 LP |
855 | if (s->pid_file) |
856 | fprintf(f, | |
857 | "%sPIDFile: %s\n", | |
858 | prefix, s->pid_file); | |
859 | ||
05e343b7 LP |
860 | if (s->bus_name) |
861 | fprintf(f, | |
862 | "%sBusName: %s\n" | |
863 | "%sBus Name Good: %s\n", | |
864 | prefix, s->bus_name, | |
865 | prefix, yes_no(s->bus_name_good)); | |
866 | ||
9dfb64f8 ZJS |
867 | if (UNIT_ISSET(s->accept_socket)) |
868 | fprintf(f, | |
869 | "%sAccept Socket: %s\n", | |
870 | prefix, UNIT_DEREF(s->accept_socket)->id); | |
871 | ||
c9d41699 YW |
872 | fprintf(f, |
873 | "%sRestartSec: %s\n" | |
874 | "%sTimeoutStartSec: %s\n" | |
bf760801 JK |
875 | "%sTimeoutStopSec: %s\n" |
876 | "%sTimeoutStartFailureMode: %s\n" | |
877 | "%sTimeoutStopFailureMode: %s\n", | |
5291f26d ZJS |
878 | prefix, FORMAT_TIMESPAN(s->restart_usec, USEC_PER_SEC), |
879 | prefix, FORMAT_TIMESPAN(s->timeout_start_usec, USEC_PER_SEC), | |
880 | prefix, FORMAT_TIMESPAN(s->timeout_stop_usec, USEC_PER_SEC), | |
bf760801 JK |
881 | prefix, service_timeout_failure_mode_to_string(s->timeout_start_failure_mode), |
882 | prefix, service_timeout_failure_mode_to_string(s->timeout_stop_failure_mode)); | |
dcab85be YW |
883 | |
884 | if (s->timeout_abort_set) | |
885 | fprintf(f, | |
886 | "%sTimeoutAbortSec: %s\n", | |
5291f26d | 887 | prefix, FORMAT_TIMESPAN(s->timeout_abort_usec, USEC_PER_SEC)); |
dcab85be YW |
888 | |
889 | fprintf(f, | |
890 | "%sRuntimeMaxSec: %s\n" | |
5918a933 | 891 | "%sRuntimeRandomizedExtraSec: %s\n" |
dcab85be | 892 | "%sWatchdogSec: %s\n", |
5291f26d | 893 | prefix, FORMAT_TIMESPAN(s->runtime_max_usec, USEC_PER_SEC), |
5918a933 | 894 | prefix, FORMAT_TIMESPAN(s->runtime_rand_extra_usec, USEC_PER_SEC), |
5291f26d | 895 | prefix, FORMAT_TIMESPAN(s->watchdog_usec, USEC_PER_SEC)); |
c9d41699 | 896 | |
4819ff03 | 897 | kill_context_dump(&s->kill_context, f, prefix); |
5cb5a6ff LP |
898 | exec_context_dump(&s->exec_context, f, prefix); |
899 | ||
e537352b | 900 | for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) { |
5cb5a6ff | 901 | |
44d8db9e LP |
902 | if (!s->exec_command[c]) |
903 | continue; | |
904 | ||
40d50879 | 905 | fprintf(f, "%s-> %s:\n", |
94f04347 | 906 | prefix, service_exec_command_to_string(c)); |
44d8db9e LP |
907 | |
908 | exec_command_dump_list(s->exec_command[c], f, prefix2); | |
5cb5a6ff | 909 | } |
44d8db9e | 910 | |
8c47c732 LP |
911 | if (s->status_text) |
912 | fprintf(f, "%sStatus Text: %s\n", | |
913 | prefix, s->status_text); | |
a354329f | 914 | |
ece174c5 | 915 | if (s->n_fd_store_max > 0) |
a354329f LP |
916 | fprintf(f, |
917 | "%sFile Descriptor Store Max: %u\n" | |
da6053d0 | 918 | "%sFile Descriptor Store Current: %zu\n", |
a354329f LP |
919 | prefix, s->n_fd_store_max, |
920 | prefix, s->n_fd_store); | |
18f573aa | 921 | |
bc0623df | 922 | cgroup_context_dump(UNIT(s), f, prefix); |
5cb5a6ff LP |
923 | } |
924 | ||
db256aab LP |
925 | static int service_is_suitable_main_pid(Service *s, pid_t pid, int prio) { |
926 | Unit *owner; | |
927 | ||
928 | assert(s); | |
929 | assert(pid_is_valid(pid)); | |
930 | ||
931 | /* Checks whether the specified PID is suitable as main PID for this service. returns negative if not, 0 if the | |
932 | * PID is questionnable but should be accepted if the source of configuration is trusted. > 0 if the PID is | |
933 | * good */ | |
934 | ||
d85ff944 YW |
935 | if (pid == getpid_cached() || pid == 1) |
936 | return log_unit_full_errno(UNIT(s), prio, SYNTHETIC_ERRNO(EPERM), "New main PID "PID_FMT" is the manager, refusing.", pid); | |
db256aab | 937 | |
d85ff944 YW |
938 | if (pid == s->control_pid) |
939 | return log_unit_full_errno(UNIT(s), prio, SYNTHETIC_ERRNO(EPERM), "New main PID "PID_FMT" is the control process, refusing.", pid); | |
db256aab | 940 | |
d85ff944 YW |
941 | if (!pid_is_alive(pid)) |
942 | return log_unit_full_errno(UNIT(s), prio, SYNTHETIC_ERRNO(ESRCH), "New main PID "PID_FMT" does not exist or is a zombie.", pid); | |
db256aab LP |
943 | |
944 | owner = manager_get_unit_by_pid(UNIT(s)->manager, pid); | |
945 | if (owner == UNIT(s)) { | |
946 | log_unit_debug(UNIT(s), "New main PID "PID_FMT" belongs to service, we are happy.", pid); | |
947 | return 1; /* Yay, it's definitely a good PID */ | |
948 | } | |
949 | ||
950 | return 0; /* Hmm it's a suspicious PID, let's accept it if configuration source is trusted */ | |
951 | } | |
952 | ||
c5419d42 | 953 | static int service_load_pid_file(Service *s, bool may_warn) { |
73969ab6 | 954 | bool questionable_pid_file = false; |
7fd1b19b | 955 | _cleanup_free_ char *k = NULL; |
db256aab LP |
956 | _cleanup_close_ int fd = -1; |
957 | int r, prio; | |
5925dd3c | 958 | pid_t pid; |
034c6ed7 LP |
959 | |
960 | assert(s); | |
961 | ||
034c6ed7 | 962 | if (!s->pid_file) |
13230d5d | 963 | return -ENOENT; |
034c6ed7 | 964 | |
db256aab LP |
965 | prio = may_warn ? LOG_INFO : LOG_DEBUG; |
966 | ||
a5648b80 ZJS |
967 | r = chase_symlinks(s->pid_file, NULL, CHASE_SAFE, NULL, &fd); |
968 | if (r == -ENOLINK) { | |
8ed6f81b YW |
969 | log_unit_debug_errno(UNIT(s), r, |
970 | "Potentially unsafe symlink chain, will now retry with relaxed checks: %s", s->pid_file); | |
73969ab6 LP |
971 | |
972 | questionable_pid_file = true; | |
973 | ||
a5648b80 | 974 | r = chase_symlinks(s->pid_file, NULL, 0, NULL, &fd); |
73969ab6 | 975 | } |
a5648b80 | 976 | if (r < 0) |
8ed6f81b YW |
977 | return log_unit_full_errno(UNIT(s), prio, fd, |
978 | "Can't open PID file %s (yet?) after %s: %m", s->pid_file, service_state_to_string(s->state)); | |
db256aab | 979 | |
a5648b80 ZJS |
980 | /* Let's read the PID file now that we chased it down. But we need to convert the O_PATH fd |
981 | * chase_symlinks() returned us into a proper fd first. */ | |
ddb6eeaf | 982 | r = read_one_line_file(FORMAT_PROC_FD_PATH(fd), &k); |
db256aab | 983 | if (r < 0) |
a5648b80 ZJS |
984 | return log_unit_error_errno(UNIT(s), r, |
985 | "Can't convert PID files %s O_PATH file descriptor to proper file descriptor: %m", | |
986 | s->pid_file); | |
034c6ed7 | 987 | |
5925dd3c | 988 | r = parse_pid(k, &pid); |
db256aab | 989 | if (r < 0) |
8ed6f81b | 990 | return log_unit_full_errno(UNIT(s), prio, r, "Failed to parse PID from file %s: %m", s->pid_file); |
db256aab LP |
991 | |
992 | if (s->main_pid_known && pid == s->main_pid) | |
993 | return 0; | |
994 | ||
995 | r = service_is_suitable_main_pid(s, pid, prio); | |
996 | if (r < 0) | |
5925dd3c | 997 | return r; |
db256aab LP |
998 | if (r == 0) { |
999 | struct stat st; | |
406eaf93 | 1000 | |
d85ff944 YW |
1001 | if (questionable_pid_file) |
1002 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(EPERM), | |
1003 | "Refusing to accept PID outside of service control group, acquired through unsafe symlink chain: %s", s->pid_file); | |
73969ab6 | 1004 | |
db256aab LP |
1005 | /* Hmm, it's not clear if the new main PID is safe. Let's allow this if the PID file is owned by root */ |
1006 | ||
1007 | if (fstat(fd, &st) < 0) | |
1008 | return log_unit_error_errno(UNIT(s), errno, "Failed to fstat() PID file O_PATH fd: %m"); | |
1009 | ||
d85ff944 YW |
1010 | if (st.st_uid != 0) |
1011 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(EPERM), | |
1012 | "New main PID "PID_FMT" does not belong to service, and PID file is not owned by root. Refusing.", pid); | |
db256aab LP |
1013 | |
1014 | 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 |
1015 | } |
1016 | ||
db01f8b3 | 1017 | if (s->main_pid_known) { |
f2341e0a | 1018 | log_unit_debug(UNIT(s), "Main PID changing: "PID_FMT" -> "PID_FMT, s->main_pid, pid); |
8bb2d17d | 1019 | |
db01f8b3 MS |
1020 | service_unwatch_main_pid(s); |
1021 | s->main_pid_known = false; | |
3a111838 | 1022 | } else |
f2341e0a | 1023 | log_unit_debug(UNIT(s), "Main PID loaded: "PID_FMT, pid); |
db01f8b3 | 1024 | |
117dcc57 ZJS |
1025 | r = service_set_main_pid(s, pid); |
1026 | if (r < 0) | |
16f6025e LP |
1027 | return r; |
1028 | ||
f75f613d | 1029 | r = unit_watch_pid(UNIT(s), pid, false); |
e8b509d3 LP |
1030 | if (r < 0) /* FIXME: we need to do something here */ |
1031 | return log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" for service: %m", pid); | |
034c6ed7 | 1032 | |
db256aab | 1033 | return 1; |
034c6ed7 LP |
1034 | } |
1035 | ||
783e05d6 | 1036 | static void service_search_main_pid(Service *s) { |
efdb0237 | 1037 | pid_t pid = 0; |
4fbf50b3 LP |
1038 | int r; |
1039 | ||
1040 | assert(s); | |
1041 | ||
2aed63f4 | 1042 | /* If we know it anyway, don't ever fall back to unreliable |
3185a36b | 1043 | * heuristics */ |
4fbf50b3 | 1044 | if (s->main_pid_known) |
783e05d6 | 1045 | return; |
4fbf50b3 | 1046 | |
3185a36b | 1047 | if (!s->guess_main_pid) |
783e05d6 | 1048 | return; |
3185a36b | 1049 | |
4fbf50b3 LP |
1050 | assert(s->main_pid <= 0); |
1051 | ||
783e05d6 ZJS |
1052 | if (unit_search_main_pid(UNIT(s), &pid) < 0) |
1053 | return; | |
4fbf50b3 | 1054 | |
f2341e0a | 1055 | log_unit_debug(UNIT(s), "Main PID guessed: "PID_FMT, pid); |
783e05d6 ZJS |
1056 | if (service_set_main_pid(s, pid) < 0) |
1057 | return; | |
4fbf50b3 | 1058 | |
f75f613d | 1059 | r = unit_watch_pid(UNIT(s), pid, false); |
783e05d6 | 1060 | if (r < 0) |
4fbf50b3 | 1061 | /* FIXME: we need to do something here */ |
f2341e0a | 1062 | log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" from: %m", pid); |
4fbf50b3 LP |
1063 | } |
1064 | ||
034c6ed7 LP |
1065 | static void service_set_state(Service *s, ServiceState state) { |
1066 | ServiceState old_state; | |
e056b01d | 1067 | const UnitActiveState *table; |
842129f5 | 1068 | |
5cb5a6ff LP |
1069 | assert(s); |
1070 | ||
6fcbec6f LP |
1071 | if (s->state != state) |
1072 | bus_unit_send_pending_change_signal(UNIT(s), false); | |
1073 | ||
e056b01d LP |
1074 | table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
1075 | ||
034c6ed7 | 1076 | old_state = s->state; |
5cb5a6ff | 1077 | s->state = state; |
034c6ed7 | 1078 | |
3a111838 MS |
1079 | service_unwatch_pid_file(s); |
1080 | ||
842129f5 | 1081 | if (!IN_SET(state, |
31cd5f63 | 1082 | SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, |
36c16a7c | 1083 | SERVICE_RUNNING, |
842129f5 | 1084 | SERVICE_RELOAD, |
c87700a1 | 1085 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 1086 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL, |
4c2f5842 LP |
1087 | SERVICE_AUTO_RESTART, |
1088 | SERVICE_CLEANING)) | |
5dcadb4c | 1089 | s->timer_event_source = sd_event_source_disable_unref(s->timer_event_source); |
034c6ed7 | 1090 | |
842129f5 LP |
1091 | if (!IN_SET(state, |
1092 | SERVICE_START, SERVICE_START_POST, | |
1093 | SERVICE_RUNNING, SERVICE_RELOAD, | |
c87700a1 | 1094 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 1095 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
5e94833f | 1096 | service_unwatch_main_pid(s); |
867b3b7d LP |
1097 | s->main_command = NULL; |
1098 | } | |
034c6ed7 | 1099 | |
842129f5 | 1100 | if (!IN_SET(state, |
31cd5f63 | 1101 | SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, |
842129f5 | 1102 | SERVICE_RELOAD, |
c87700a1 | 1103 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 1104 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL, |
4c2f5842 | 1105 | SERVICE_CLEANING)) { |
5e94833f | 1106 | service_unwatch_control_pid(s); |
034c6ed7 | 1107 | s->control_command = NULL; |
a16e1123 | 1108 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; |
e537352b | 1109 | } |
034c6ed7 | 1110 | |
50be4f4a | 1111 | if (IN_SET(state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART)) { |
a911bb9a | 1112 | unit_unwatch_all_pids(UNIT(s)); |
50be4f4a LP |
1113 | unit_dequeue_rewatch_pids(UNIT(s)); |
1114 | } | |
a911bb9a | 1115 | |
842129f5 | 1116 | if (!IN_SET(state, |
31cd5f63 | 1117 | SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, |
842129f5 | 1118 | SERVICE_RUNNING, SERVICE_RELOAD, |
c87700a1 | 1119 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 1120 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL) && |
5cc3985e | 1121 | !(state == SERVICE_DEAD && UNIT(s)->job)) |
4f2d528d LP |
1122 | service_close_socket_fd(s); |
1123 | ||
5686391b | 1124 | if (state != SERVICE_START) |
5dcadb4c | 1125 | s->exec_fd_event_source = sd_event_source_disable_unref(s->exec_fd_event_source); |
5686391b | 1126 | |
7596e9e1 | 1127 | if (!IN_SET(state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
a6927d7f MO |
1128 | service_stop_watchdog(s); |
1129 | ||
f6023656 LP |
1130 | /* For the inactive states unit_notify() will trim the cgroup, |
1131 | * but for exit we have to do that ourselves... */ | |
2c289ea8 | 1132 | if (state == SERVICE_EXITED && !MANAGER_IS_RELOADING(UNIT(s)->manager)) |
efdb0237 | 1133 | unit_prune_cgroup(UNIT(s)); |
f6023656 | 1134 | |
e537352b | 1135 | if (old_state != state) |
f2341e0a | 1136 | log_unit_debug(UNIT(s), "Changed %s -> %s", service_state_to_string(old_state), service_state_to_string(state)); |
acbb0225 | 1137 | |
2ad2e41a LP |
1138 | unit_notify(UNIT(s), table[old_state], table[state], |
1139 | (s->reload_result == SERVICE_SUCCESS ? 0 : UNIT_NOTIFY_RELOAD_FAILURE) | | |
42e6f549 | 1140 | (s->will_auto_restart ? UNIT_NOTIFY_WILL_AUTO_RESTART : 0)); |
034c6ed7 LP |
1141 | } |
1142 | ||
36c16a7c LP |
1143 | static usec_t service_coldplug_timeout(Service *s) { |
1144 | assert(s); | |
1145 | ||
1146 | switch (s->deserialized_state) { | |
1147 | ||
31cd5f63 | 1148 | case SERVICE_CONDITION: |
36c16a7c LP |
1149 | case SERVICE_START_PRE: |
1150 | case SERVICE_START: | |
1151 | case SERVICE_START_POST: | |
1152 | case SERVICE_RELOAD: | |
1153 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->timeout_start_usec); | |
1154 | ||
1155 | case SERVICE_RUNNING: | |
5918a933 | 1156 | return service_running_timeout(s); |
36c16a7c LP |
1157 | |
1158 | case SERVICE_STOP: | |
36c16a7c LP |
1159 | case SERVICE_STOP_SIGTERM: |
1160 | case SERVICE_STOP_SIGKILL: | |
1161 | case SERVICE_STOP_POST: | |
1162 | case SERVICE_FINAL_SIGTERM: | |
1163 | case SERVICE_FINAL_SIGKILL: | |
1164 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->timeout_stop_usec); | |
1165 | ||
dc653bf4 | 1166 | case SERVICE_STOP_WATCHDOG: |
bf760801 | 1167 | case SERVICE_FINAL_WATCHDOG: |
dc653bf4 JK |
1168 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, service_timeout_abort_usec(s)); |
1169 | ||
36c16a7c LP |
1170 | case SERVICE_AUTO_RESTART: |
1171 | return usec_add(UNIT(s)->inactive_enter_timestamp.monotonic, s->restart_usec); | |
1172 | ||
4c2f5842 | 1173 | case SERVICE_CLEANING: |
12213aed | 1174 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->exec_context.timeout_clean_usec); |
4c2f5842 | 1175 | |
36c16a7c LP |
1176 | default: |
1177 | return USEC_INFINITY; | |
1178 | } | |
1179 | } | |
1180 | ||
be847e82 | 1181 | static int service_coldplug(Unit *u) { |
a16e1123 LP |
1182 | Service *s = SERVICE(u); |
1183 | int r; | |
1184 | ||
1185 | assert(s); | |
1186 | assert(s->state == SERVICE_DEAD); | |
1187 | ||
930d2838 LP |
1188 | if (s->deserialized_state == s->state) |
1189 | return 0; | |
6c12b52e | 1190 | |
36c16a7c LP |
1191 | r = service_arm_timer(s, service_coldplug_timeout(s)); |
1192 | if (r < 0) | |
1193 | return r; | |
a911bb9a | 1194 | |
930d2838 LP |
1195 | if (s->main_pid > 0 && |
1196 | pid_is_unwaited(s->main_pid) && | |
9acac212 | 1197 | (IN_SET(s->deserialized_state, |
930d2838 LP |
1198 | SERVICE_START, SERVICE_START_POST, |
1199 | SERVICE_RUNNING, SERVICE_RELOAD, | |
c87700a1 | 1200 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 1201 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL))) { |
f75f613d | 1202 | r = unit_watch_pid(UNIT(s), s->main_pid, false); |
930d2838 LP |
1203 | if (r < 0) |
1204 | return r; | |
1205 | } | |
bb242b7b | 1206 | |
930d2838 LP |
1207 | if (s->control_pid > 0 && |
1208 | pid_is_unwaited(s->control_pid) && | |
1209 | IN_SET(s->deserialized_state, | |
31cd5f63 | 1210 | SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, |
930d2838 | 1211 | SERVICE_RELOAD, |
c87700a1 | 1212 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 1213 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL, |
4c2f5842 | 1214 | SERVICE_CLEANING)) { |
f75f613d | 1215 | r = unit_watch_pid(UNIT(s), s->control_pid, false); |
930d2838 LP |
1216 | if (r < 0) |
1217 | return r; | |
a16e1123 | 1218 | } |
92c1622e | 1219 | |
4c2f5842 | 1220 | if (!IN_SET(s->deserialized_state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART, SERVICE_CLEANING)) { |
50be4f4a | 1221 | (void) unit_enqueue_rewatch_pids(u); |
29206d46 | 1222 | (void) unit_setup_dynamic_creds(u); |
e8a565cb YW |
1223 | (void) unit_setup_exec_runtime(u); |
1224 | } | |
29206d46 | 1225 | |
50be4f4a LP |
1226 | if (IN_SET(s->deserialized_state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
1227 | service_start_watchdog(s); | |
1228 | ||
3ebcd323 ZJS |
1229 | if (UNIT_ISSET(s->accept_socket)) { |
1230 | Socket* socket = SOCKET(UNIT_DEREF(s->accept_socket)); | |
1231 | ||
1232 | if (socket->max_connections_per_source > 0) { | |
1233 | SocketPeer *peer; | |
1234 | ||
1235 | /* Make a best-effort attempt at bumping the connection count */ | |
1236 | if (socket_acquire_peer(socket, s->socket_fd, &peer) > 0) { | |
1237 | socket_peer_unref(s->peer); | |
1238 | s->peer = peer; | |
1239 | } | |
1240 | } | |
1241 | } | |
1242 | ||
930d2838 | 1243 | service_set_state(s, s->deserialized_state); |
a16e1123 LP |
1244 | return 0; |
1245 | } | |
1246 | ||
25b583d7 LP |
1247 | static int service_collect_fds( |
1248 | Service *s, | |
1249 | int **fds, | |
1250 | char ***fd_names, | |
1251 | size_t *n_socket_fds, | |
1252 | size_t *n_storage_fds) { | |
4c47affc | 1253 | |
8dd4c05b | 1254 | _cleanup_strv_free_ char **rfd_names = NULL; |
a354329f | 1255 | _cleanup_free_ int *rfds = NULL; |
25b583d7 | 1256 | size_t rn_socket_fds = 0, rn_storage_fds = 0; |
4c47affc | 1257 | int r; |
44d8db9e LP |
1258 | |
1259 | assert(s); | |
1260 | assert(fds); | |
8dd4c05b | 1261 | assert(fd_names); |
9b141911 | 1262 | assert(n_socket_fds); |
25b583d7 | 1263 | assert(n_storage_fds); |
44d8db9e | 1264 | |
8dd4c05b | 1265 | if (s->socket_fd >= 0) { |
6cf6bbc2 | 1266 | |
8dd4c05b | 1267 | /* Pass the per-connection socket */ |
57020a3a | 1268 | |
8dd4c05b LP |
1269 | rfds = new(int, 1); |
1270 | if (!rfds) | |
1271 | return -ENOMEM; | |
1272 | rfds[0] = s->socket_fd; | |
57020a3a | 1273 | |
bea1a013 | 1274 | rfd_names = strv_new("connection"); |
8dd4c05b LP |
1275 | if (!rfd_names) |
1276 | return -ENOMEM; | |
44d8db9e | 1277 | |
4c47affc | 1278 | rn_socket_fds = 1; |
8dd4c05b | 1279 | } else { |
8dd4c05b | 1280 | Unit *u; |
44d8db9e | 1281 | |
8dd4c05b | 1282 | /* Pass all our configured sockets for singleton services */ |
44d8db9e | 1283 | |
15ed3c3a | 1284 | UNIT_FOREACH_DEPENDENCY(u, UNIT(s), UNIT_ATOM_TRIGGERED_BY) { |
8dd4c05b LP |
1285 | _cleanup_free_ int *cfds = NULL; |
1286 | Socket *sock; | |
1287 | int cn_fds; | |
44d8db9e | 1288 | |
8dd4c05b LP |
1289 | if (u->type != UNIT_SOCKET) |
1290 | continue; | |
44d8db9e | 1291 | |
8dd4c05b | 1292 | sock = SOCKET(u); |
a354329f | 1293 | |
8dd4c05b LP |
1294 | cn_fds = socket_collect_fds(sock, &cfds); |
1295 | if (cn_fds < 0) | |
1296 | return cn_fds; | |
44d8db9e | 1297 | |
8dd4c05b LP |
1298 | if (cn_fds <= 0) |
1299 | continue; | |
79c7626d | 1300 | |
8dd4c05b | 1301 | if (!rfds) { |
1cc6c93a | 1302 | rfds = TAKE_PTR(cfds); |
4c47affc | 1303 | rn_socket_fds = cn_fds; |
8dd4c05b LP |
1304 | } else { |
1305 | int *t; | |
1306 | ||
62d74c78 | 1307 | t = reallocarray(rfds, rn_socket_fds + cn_fds, sizeof(int)); |
8dd4c05b LP |
1308 | if (!t) |
1309 | return -ENOMEM; | |
1310 | ||
4c47affc | 1311 | memcpy(t + rn_socket_fds, cfds, cn_fds * sizeof(int)); |
8dd4c05b LP |
1312 | |
1313 | rfds = t; | |
4c47affc | 1314 | rn_socket_fds += cn_fds; |
8dd4c05b LP |
1315 | } |
1316 | ||
1317 | r = strv_extend_n(&rfd_names, socket_fdname(sock), cn_fds); | |
1318 | if (r < 0) | |
1319 | return r; | |
44d8db9e LP |
1320 | } |
1321 | } | |
1322 | ||
a354329f LP |
1323 | if (s->n_fd_store > 0) { |
1324 | ServiceFDStore *fs; | |
25b583d7 | 1325 | size_t n_fds; |
8dd4c05b | 1326 | char **nl; |
a354329f LP |
1327 | int *t; |
1328 | ||
62d74c78 | 1329 | t = reallocarray(rfds, rn_socket_fds + s->n_fd_store, sizeof(int)); |
a354329f LP |
1330 | if (!t) |
1331 | return -ENOMEM; | |
1332 | ||
1333 | rfds = t; | |
8dd4c05b | 1334 | |
62d74c78 | 1335 | nl = reallocarray(rfd_names, rn_socket_fds + s->n_fd_store + 1, sizeof(char *)); |
8dd4c05b LP |
1336 | if (!nl) |
1337 | return -ENOMEM; | |
1338 | ||
1339 | rfd_names = nl; | |
4c47affc | 1340 | n_fds = rn_socket_fds; |
8dd4c05b LP |
1341 | |
1342 | LIST_FOREACH(fd_store, fs, s->fd_store) { | |
4c47affc FB |
1343 | rfds[n_fds] = fs->fd; |
1344 | rfd_names[n_fds] = strdup(strempty(fs->fdname)); | |
1345 | if (!rfd_names[n_fds]) | |
8dd4c05b LP |
1346 | return -ENOMEM; |
1347 | ||
4c47affc FB |
1348 | rn_storage_fds++; |
1349 | n_fds++; | |
8dd4c05b LP |
1350 | } |
1351 | ||
4c47affc | 1352 | rfd_names[n_fds] = NULL; |
a354329f LP |
1353 | } |
1354 | ||
1cc6c93a YW |
1355 | *fds = TAKE_PTR(rfds); |
1356 | *fd_names = TAKE_PTR(rfd_names); | |
9b141911 | 1357 | *n_socket_fds = rn_socket_fds; |
4c47affc | 1358 | *n_storage_fds = rn_storage_fds; |
3e33402a | 1359 | |
4c47affc | 1360 | return 0; |
44d8db9e LP |
1361 | } |
1362 | ||
5686391b LP |
1363 | static int service_allocate_exec_fd_event_source( |
1364 | Service *s, | |
1365 | int fd, | |
1366 | sd_event_source **ret_event_source) { | |
1367 | ||
1368 | _cleanup_(sd_event_source_unrefp) sd_event_source *source = NULL; | |
1369 | int r; | |
1370 | ||
1371 | assert(s); | |
1372 | assert(fd >= 0); | |
1373 | assert(ret_event_source); | |
1374 | ||
1375 | r = sd_event_add_io(UNIT(s)->manager->event, &source, fd, 0, service_dispatch_exec_io, s); | |
1376 | if (r < 0) | |
1377 | return log_unit_error_errno(UNIT(s), r, "Failed to allocate exec_fd event source: %m"); | |
1378 | ||
1379 | /* This is a bit lower priority than SIGCHLD, as that carries a lot more interesting failure information */ | |
1380 | ||
1381 | r = sd_event_source_set_priority(source, SD_EVENT_PRIORITY_NORMAL-3); | |
1382 | if (r < 0) | |
1383 | return log_unit_error_errno(UNIT(s), r, "Failed to adjust priority of exec_fd event source: %m"); | |
1384 | ||
bc989831 | 1385 | (void) sd_event_source_set_description(source, "service exec_fd"); |
5686391b LP |
1386 | |
1387 | r = sd_event_source_set_io_fd_own(source, true); | |
1388 | if (r < 0) | |
1389 | return log_unit_error_errno(UNIT(s), r, "Failed to pass ownership of fd to event source: %m"); | |
1390 | ||
1391 | *ret_event_source = TAKE_PTR(source); | |
1392 | return 0; | |
1393 | } | |
1394 | ||
1395 | static int service_allocate_exec_fd( | |
1396 | Service *s, | |
1397 | sd_event_source **ret_event_source, | |
e78695d4 | 1398 | int *ret_exec_fd) { |
5686391b | 1399 | |
e78695d4 | 1400 | _cleanup_close_pair_ int p[] = { -1, -1 }; |
5686391b LP |
1401 | int r; |
1402 | ||
1403 | assert(s); | |
1404 | assert(ret_event_source); | |
1405 | assert(ret_exec_fd); | |
1406 | ||
1407 | if (pipe2(p, O_CLOEXEC|O_NONBLOCK) < 0) | |
1408 | return log_unit_error_errno(UNIT(s), errno, "Failed to allocate exec_fd pipe: %m"); | |
1409 | ||
1410 | r = service_allocate_exec_fd_event_source(s, p[0], ret_event_source); | |
1411 | if (r < 0) | |
1412 | return r; | |
1413 | ||
e78695d4 | 1414 | TAKE_FD(p[0]); |
5686391b LP |
1415 | *ret_exec_fd = TAKE_FD(p[1]); |
1416 | ||
1417 | return 0; | |
1418 | } | |
1419 | ||
6375bd20 JW |
1420 | static bool service_exec_needs_notify_socket(Service *s, ExecFlags flags) { |
1421 | assert(s); | |
1422 | ||
1423 | /* Notifications are accepted depending on the process and | |
1424 | * the access setting of the service: | |
1425 | * process: \ access: NONE MAIN EXEC ALL | |
1426 | * main no yes yes yes | |
1427 | * control no no yes yes | |
1428 | * other (forked) no no no yes */ | |
1429 | ||
1430 | if (flags & EXEC_IS_CONTROL) | |
1431 | /* A control process */ | |
1432 | return IN_SET(s->notify_access, NOTIFY_EXEC, NOTIFY_ALL); | |
1433 | ||
1434 | /* We only spawn main processes and control processes, so any | |
1435 | * process that is not a control process is a main process */ | |
1436 | return s->notify_access != NOTIFY_NONE; | |
1437 | } | |
1438 | ||
81a2b7ce LP |
1439 | static int service_spawn( |
1440 | Service *s, | |
1441 | ExecCommand *c, | |
21b2ce39 | 1442 | usec_t timeout, |
c39f1ce2 | 1443 | ExecFlags flags, |
e78695d4 | 1444 | pid_t *ret_pid) { |
81a2b7ce | 1445 | |
b9c04eaf | 1446 | _cleanup_(exec_params_clear) ExecParameters exec_params = { |
c3f8a065 LP |
1447 | .flags = flags, |
1448 | .stdin_fd = -1, | |
1449 | .stdout_fd = -1, | |
1450 | .stderr_fd = -1, | |
1451 | .exec_fd = -1, | |
9fa95f85 | 1452 | }; |
5686391b | 1453 | _cleanup_(sd_event_source_unrefp) sd_event_source *exec_fd_source = NULL; |
c3f8a065 LP |
1454 | _cleanup_strv_free_ char **final_env = NULL, **our_env = NULL; |
1455 | size_t n_env = 0; | |
3c7416b6 | 1456 | pid_t pid; |
8dd4c05b LP |
1457 | int r; |
1458 | ||
034c6ed7 LP |
1459 | assert(s); |
1460 | assert(c); | |
e78695d4 | 1461 | assert(ret_pid); |
034c6ed7 | 1462 | |
78f93209 | 1463 | r = unit_prepare_exec(UNIT(s)); /* This realizes the cgroup, among other things */ |
3c7416b6 LP |
1464 | if (r < 0) |
1465 | return r; | |
1466 | ||
bc989831 ZJS |
1467 | assert(!s->exec_fd_event_source); |
1468 | ||
9c1a61ad LP |
1469 | if (flags & EXEC_IS_CONTROL) { |
1470 | /* If this is a control process, mask the permissions/chroot application if this is requested. */ | |
1471 | if (s->permissions_start_only) | |
1703fa41 | 1472 | exec_params.flags &= ~EXEC_APPLY_SANDBOXING; |
9c1a61ad LP |
1473 | if (s->root_directory_start_only) |
1474 | exec_params.flags &= ~EXEC_APPLY_CHROOT; | |
1475 | } | |
1476 | ||
c39f1ce2 | 1477 | if ((flags & EXEC_PASS_FDS) || |
6cf6bbc2 LP |
1478 | s->exec_context.std_input == EXEC_INPUT_SOCKET || |
1479 | s->exec_context.std_output == EXEC_OUTPUT_SOCKET || | |
1480 | s->exec_context.std_error == EXEC_OUTPUT_SOCKET) { | |
1481 | ||
c3f8a065 LP |
1482 | r = service_collect_fds(s, |
1483 | &exec_params.fds, | |
1484 | &exec_params.fd_names, | |
1485 | &exec_params.n_socket_fds, | |
1486 | &exec_params.n_storage_fds); | |
8dd4c05b | 1487 | if (r < 0) |
36c16a7c | 1488 | return r; |
6cf6bbc2 | 1489 | |
c3f8a065 | 1490 | log_unit_debug(UNIT(s), "Passing %zu fds to service", exec_params.n_socket_fds + exec_params.n_storage_fds); |
4f2d528d | 1491 | } |
44d8db9e | 1492 | |
5686391b | 1493 | if (!FLAGS_SET(flags, EXEC_IS_CONTROL) && s->type == SERVICE_EXEC) { |
c3f8a065 | 1494 | r = service_allocate_exec_fd(s, &exec_fd_source, &exec_params.exec_fd); |
5686391b LP |
1495 | if (r < 0) |
1496 | return r; | |
1497 | } | |
1498 | ||
36c16a7c LP |
1499 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), timeout)); |
1500 | if (r < 0) | |
1501 | return r; | |
034c6ed7 | 1502 | |
dcf3c3c3 | 1503 | our_env = new0(char*, 10); |
36c16a7c LP |
1504 | if (!our_env) |
1505 | return -ENOMEM; | |
c952c6ec | 1506 | |
3bdc25a4 | 1507 | if (service_exec_needs_notify_socket(s, flags)) { |
36c16a7c LP |
1508 | if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) |
1509 | return -ENOMEM; | |
c952c6ec | 1510 | |
3bdc25a4 LP |
1511 | exec_params.notify_socket = UNIT(s)->manager->notify_socket; |
1512 | } | |
1513 | ||
2105e76a | 1514 | if (s->main_pid > 0) |
36c16a7c LP |
1515 | if (asprintf(our_env + n_env++, "MAINPID="PID_FMT, s->main_pid) < 0) |
1516 | return -ENOMEM; | |
2105e76a | 1517 | |
c39f1ce2 | 1518 | if (MANAGER_IS_USER(UNIT(s)->manager)) |
df0ff127 | 1519 | if (asprintf(our_env + n_env++, "MANAGERPID="PID_FMT, getpid_cached()) < 0) |
36c16a7c | 1520 | return -ENOMEM; |
97ae63e2 | 1521 | |
dcf3c3c3 LP |
1522 | if (s->pid_file) |
1523 | if (asprintf(our_env + n_env++, "PIDFILE=%s", s->pid_file) < 0) | |
1524 | return -ENOMEM; | |
1525 | ||
8dd4c05b | 1526 | if (s->socket_fd >= 0) { |
3b1c5241 SL |
1527 | union sockaddr_union sa; |
1528 | socklen_t salen = sizeof(sa); | |
1529 | ||
f56e7bfe LP |
1530 | /* If this is a per-connection service instance, let's set $REMOTE_ADDR and $REMOTE_PORT to something |
1531 | * useful. Note that we do this only when we are still connected at this point in time, which we might | |
1532 | * very well not be. Hence we ignore all errors when retrieving peer information (as that might result | |
1533 | * in ENOTCONN), and just use whate we can use. */ | |
f2dbd059 | 1534 | |
f56e7bfe LP |
1535 | if (getpeername(s->socket_fd, &sa.sa, &salen) >= 0 && |
1536 | IN_SET(sa.sa.sa_family, AF_INET, AF_INET6, AF_VSOCK)) { | |
3b1c5241 SL |
1537 | _cleanup_free_ char *addr = NULL; |
1538 | char *t; | |
882ac6e7 | 1539 | unsigned port; |
3b1c5241 SL |
1540 | |
1541 | r = sockaddr_pretty(&sa.sa, salen, true, false, &addr); | |
1542 | if (r < 0) | |
36c16a7c | 1543 | return r; |
3b1c5241 | 1544 | |
b910cc72 | 1545 | t = strjoin("REMOTE_ADDR=", addr); |
36c16a7c LP |
1546 | if (!t) |
1547 | return -ENOMEM; | |
3b1c5241 SL |
1548 | our_env[n_env++] = t; |
1549 | ||
882ac6e7 SH |
1550 | r = sockaddr_port(&sa.sa, &port); |
1551 | if (r < 0) | |
1552 | return r; | |
3b1c5241 | 1553 | |
36c16a7c LP |
1554 | if (asprintf(&t, "REMOTE_PORT=%u", port) < 0) |
1555 | return -ENOMEM; | |
3b1c5241 SL |
1556 | our_env[n_env++] = t; |
1557 | } | |
1558 | } | |
1559 | ||
136dc4c4 LP |
1560 | if (flags & EXEC_SETENV_RESULT) { |
1561 | if (asprintf(our_env + n_env++, "SERVICE_RESULT=%s", service_result_to_string(s->result)) < 0) | |
1562 | return -ENOMEM; | |
1563 | ||
1564 | if (s->main_exec_status.pid > 0 && | |
1565 | dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) { | |
1566 | if (asprintf(our_env + n_env++, "EXIT_CODE=%s", sigchld_code_to_string(s->main_exec_status.code)) < 0) | |
1567 | return -ENOMEM; | |
1568 | ||
1569 | if (s->main_exec_status.code == CLD_EXITED) | |
1570 | r = asprintf(our_env + n_env++, "EXIT_STATUS=%i", s->main_exec_status.status); | |
1571 | else | |
1572 | r = asprintf(our_env + n_env++, "EXIT_STATUS=%s", signal_to_string(s->main_exec_status.status)); | |
1573 | if (r < 0) | |
1574 | return -ENOMEM; | |
1575 | } | |
1576 | } | |
1577 | ||
1ad6e8b3 LP |
1578 | r = unit_set_exec_params(UNIT(s), &exec_params); |
1579 | if (r < 0) | |
1580 | return r; | |
3536f49e | 1581 | |
4ab3d29f | 1582 | final_env = strv_env_merge(exec_params.environment, our_env); |
36c16a7c LP |
1583 | if (!final_env) |
1584 | return -ENOMEM; | |
c952c6ec | 1585 | |
ac647978 LP |
1586 | /* System D-Bus needs nss-systemd disabled, so that we don't deadlock */ |
1587 | SET_FLAG(exec_params.flags, EXEC_NSS_BYPASS_BUS, | |
1588 | MANAGER_IS_SYSTEM(UNIT(s)->manager) && unit_has_name(UNIT(s), SPECIAL_DBUS_SERVICE)); | |
4ad49000 | 1589 | |
b9c04eaf | 1590 | strv_free_and_replace(exec_params.environment, final_env); |
34b3f625 | 1591 | exec_params.watchdog_usec = service_get_watchdog_usec(s); |
a34ceba6 | 1592 | exec_params.selinux_context_net = s->socket_fd_selinux_context_net; |
9fa95f85 DM |
1593 | if (s->type == SERVICE_IDLE) |
1594 | exec_params.idle_pipe = UNIT(s)->manager->idle_pipe; | |
a34ceba6 LP |
1595 | exec_params.stdin_fd = s->stdin_fd; |
1596 | exec_params.stdout_fd = s->stdout_fd; | |
1597 | exec_params.stderr_fd = s->stderr_fd; | |
9fa95f85 | 1598 | |
f2341e0a LP |
1599 | r = exec_spawn(UNIT(s), |
1600 | c, | |
9e2f7c11 | 1601 | &s->exec_context, |
9fa95f85 | 1602 | &exec_params, |
613b411c | 1603 | s->exec_runtime, |
29206d46 | 1604 | &s->dynamic_creds, |
9e2f7c11 | 1605 | &pid); |
9e2f7c11 | 1606 | if (r < 0) |
36c16a7c | 1607 | return r; |
034c6ed7 | 1608 | |
5686391b LP |
1609 | s->exec_fd_event_source = TAKE_PTR(exec_fd_source); |
1610 | s->exec_fd_hot = false; | |
1611 | ||
f75f613d FB |
1612 | r = unit_watch_pid(UNIT(s), pid, true); |
1613 | if (r < 0) | |
36c16a7c | 1614 | return r; |
034c6ed7 | 1615 | |
e78695d4 | 1616 | *ret_pid = pid; |
034c6ed7 | 1617 | |
5cb5a6ff | 1618 | return 0; |
034c6ed7 LP |
1619 | } |
1620 | ||
80876c20 LP |
1621 | static int main_pid_good(Service *s) { |
1622 | assert(s); | |
1623 | ||
51894d70 | 1624 | /* Returns 0 if the pid is dead, > 0 if it is good, < 0 if we don't know */ |
80876c20 | 1625 | |
fc08079e | 1626 | /* If we know the pid file, then let's just check if it is |
80876c20 | 1627 | * still valid */ |
6dfa5494 LP |
1628 | if (s->main_pid_known) { |
1629 | ||
1630 | /* If it's an alien child let's check if it is still | |
1631 | * alive ... */ | |
62220cf7 | 1632 | if (s->main_pid_alien && s->main_pid > 0) |
9f5650ae | 1633 | return pid_is_alive(s->main_pid); |
6dfa5494 LP |
1634 | |
1635 | /* .. otherwise assume we'll get a SIGCHLD for it, | |
1636 | * which we really should wait for to collect exit | |
1637 | * status and code */ | |
80876c20 | 1638 | return s->main_pid > 0; |
6dfa5494 | 1639 | } |
80876c20 LP |
1640 | |
1641 | /* We don't know the pid */ | |
1642 | return -EAGAIN; | |
1643 | } | |
1644 | ||
019be286 | 1645 | static int control_pid_good(Service *s) { |
80876c20 LP |
1646 | assert(s); |
1647 | ||
07697d7e LP |
1648 | /* Returns 0 if the control PID is dead, > 0 if it is good. We never actually return < 0 here, but in order to |
1649 | * make this function as similar as possible to main_pid_good() and cgroup_good(), we pretend that < 0 also | |
1650 | * means: we can't figure it out. */ | |
1651 | ||
80876c20 LP |
1652 | return s->control_pid > 0; |
1653 | } | |
1654 | ||
cb0e818f HC |
1655 | static int cgroup_good(Service *s) { |
1656 | int r; | |
1657 | ||
abaf5edd ZJS |
1658 | assert(s); |
1659 | ||
cb0e818f HC |
1660 | /* Returns 0 if the cgroup is empty or doesn't exist, > 0 if it is exists and is populated, < 0 if we can't |
1661 | * figure it out */ | |
1662 | ||
abaf5edd ZJS |
1663 | if (!UNIT(s)->cgroup_path) |
1664 | return 0; | |
1665 | ||
1666 | r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, UNIT(s)->cgroup_path); | |
117dcc57 | 1667 | if (r < 0) |
80876c20 LP |
1668 | return r; |
1669 | ||
b13ddbbc | 1670 | return r == 0; |
80876c20 LP |
1671 | } |
1672 | ||
ebc57b89 | 1673 | static bool service_shall_restart(Service *s, const char **reason) { |
a509f0e6 LP |
1674 | assert(s); |
1675 | ||
1676 | /* Don't restart after manual stops */ | |
ebc57b89 ZJS |
1677 | if (s->forbid_restart) { |
1678 | *reason = "manual stop"; | |
a509f0e6 | 1679 | return false; |
ebc57b89 | 1680 | } |
a509f0e6 LP |
1681 | |
1682 | /* Never restart if this is configured as special exception */ | |
ebc57b89 ZJS |
1683 | if (exit_status_set_test(&s->restart_prevent_status, s->main_exec_status.code, s->main_exec_status.status)) { |
1684 | *reason = "prevented by exit status"; | |
a509f0e6 | 1685 | return false; |
ebc57b89 | 1686 | } |
a509f0e6 LP |
1687 | |
1688 | /* Restart if the exit code/status are configured as restart triggers */ | |
ebc57b89 ZJS |
1689 | if (exit_status_set_test(&s->restart_force_status, s->main_exec_status.code, s->main_exec_status.status)) { |
1690 | *reason = "forced by exit status"; | |
a509f0e6 | 1691 | return true; |
ebc57b89 | 1692 | } |
a509f0e6 | 1693 | |
ebc57b89 | 1694 | *reason = "restart setting"; |
a509f0e6 LP |
1695 | switch (s->restart) { |
1696 | ||
1697 | case SERVICE_RESTART_NO: | |
1698 | return false; | |
1699 | ||
1700 | case SERVICE_RESTART_ALWAYS: | |
1701 | return true; | |
1702 | ||
1703 | case SERVICE_RESTART_ON_SUCCESS: | |
1704 | return s->result == SERVICE_SUCCESS; | |
1705 | ||
1706 | case SERVICE_RESTART_ON_FAILURE: | |
bb924478 | 1707 | return !IN_SET(s->result, SERVICE_SUCCESS, SERVICE_SKIP_CONDITION); |
a509f0e6 LP |
1708 | |
1709 | case SERVICE_RESTART_ON_ABNORMAL: | |
bb924478 | 1710 | return !IN_SET(s->result, SERVICE_SUCCESS, SERVICE_FAILURE_EXIT_CODE, SERVICE_SKIP_CONDITION); |
a509f0e6 LP |
1711 | |
1712 | case SERVICE_RESTART_ON_WATCHDOG: | |
1713 | return s->result == SERVICE_FAILURE_WATCHDOG; | |
1714 | ||
1715 | case SERVICE_RESTART_ON_ABORT: | |
1716 | return IN_SET(s->result, SERVICE_FAILURE_SIGNAL, SERVICE_FAILURE_CORE_DUMP); | |
1717 | ||
1718 | default: | |
04499a70 | 1719 | assert_not_reached(); |
a509f0e6 LP |
1720 | } |
1721 | } | |
1722 | ||
deb4e708 MK |
1723 | static bool service_will_restart(Unit *u) { |
1724 | Service *s = SERVICE(u); | |
1725 | ||
53f47dfc YW |
1726 | assert(s); |
1727 | ||
deb4e708 MK |
1728 | if (s->will_auto_restart) |
1729 | return true; | |
53f47dfc YW |
1730 | if (s->state == SERVICE_AUTO_RESTART) |
1731 | return true; | |
2ad2e41a | 1732 | |
52a12341 | 1733 | return unit_will_restart_default(u); |
53f47dfc YW |
1734 | } |
1735 | ||
f42806df | 1736 | static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) { |
31cd5f63 | 1737 | ServiceState end_state; |
034c6ed7 | 1738 | int r; |
0f52f8e5 | 1739 | |
034c6ed7 LP |
1740 | assert(s); |
1741 | ||
0f52f8e5 LP |
1742 | /* If there's a stop job queued before we enter the DEAD state, we shouldn't act on Restart=, in order to not |
1743 | * undo what has already been enqueued. */ | |
1744 | if (unit_stop_pending(UNIT(s))) | |
1745 | allow_restart = false; | |
1746 | ||
a0fef983 | 1747 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1748 | s->result = f; |
034c6ed7 | 1749 | |
31cd5f63 AZ |
1750 | if (s->result == SERVICE_SUCCESS) { |
1751 | unit_log_success(UNIT(s)); | |
1752 | end_state = SERVICE_DEAD; | |
1753 | } else if (s->result == SERVICE_SKIP_CONDITION) { | |
1754 | unit_log_skip(UNIT(s), service_result_to_string(s->result)); | |
1755 | end_state = SERVICE_DEAD; | |
1756 | } else { | |
1757 | unit_log_failure(UNIT(s), service_result_to_string(s->result)); | |
1758 | end_state = SERVICE_FAILED; | |
1759 | } | |
4c425434 | 1760 | unit_warn_leftover_processes(UNIT(s), unit_log_leftover_process_stop); |
ed77d407 | 1761 | |
ebc57b89 ZJS |
1762 | if (!allow_restart) |
1763 | log_unit_debug(UNIT(s), "Service restart not allowed."); | |
1764 | else { | |
1765 | const char *reason; | |
1766 | bool shall_restart; | |
1767 | ||
1768 | shall_restart = service_shall_restart(s, &reason); | |
1769 | log_unit_debug(UNIT(s), "Service will %srestart (%s)", | |
1770 | shall_restart ? "" : "not ", | |
1771 | reason); | |
1772 | if (shall_restart) | |
1773 | s->will_auto_restart = true; | |
1774 | } | |
deb4e708 | 1775 | |
7eb2a8a1 LP |
1776 | /* Make sure service_release_resources() doesn't destroy our FD store, while we are changing through |
1777 | * SERVICE_FAILED/SERVICE_DEAD before entering into SERVICE_AUTO_RESTART. */ | |
1778 | s->n_keep_fd_store ++; | |
1779 | ||
31cd5f63 | 1780 | service_set_state(s, end_state); |
0c7f15b3 | 1781 | |
deb4e708 MK |
1782 | if (s->will_auto_restart) { |
1783 | s->will_auto_restart = false; | |
034c6ed7 | 1784 | |
36c16a7c | 1785 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->restart_usec)); |
7eb2a8a1 LP |
1786 | if (r < 0) { |
1787 | s->n_keep_fd_store--; | |
034c6ed7 | 1788 | goto fail; |
7eb2a8a1 | 1789 | } |
034c6ed7 LP |
1790 | |
1791 | service_set_state(s, SERVICE_AUTO_RESTART); | |
7a0019d3 LP |
1792 | } else |
1793 | /* If we shan't restart, then flush out the restart counter. But don't do that immediately, so that the | |
1794 | * user can still introspect the counter. Do so on the next start. */ | |
1795 | s->flush_n_restarts = true; | |
034c6ed7 | 1796 | |
5238e957 | 1797 | /* The new state is in effect, let's decrease the fd store ref counter again. Let's also re-add us to the GC |
7eb2a8a1 LP |
1798 | * queue, so that the fd store is possibly gc'ed again */ |
1799 | s->n_keep_fd_store--; | |
1800 | unit_add_to_gc_queue(UNIT(s)); | |
1801 | ||
f2341e0a | 1802 | /* The next restart might not be a manual stop, hence reset the flag indicating manual stops */ |
47342320 LP |
1803 | s->forbid_restart = false; |
1804 | ||
e66cf1a3 | 1805 | /* We want fresh tmpdirs in case service is started again immediately */ |
e8a565cb | 1806 | s->exec_runtime = exec_runtime_unref(s->exec_runtime, true); |
c17ec25e | 1807 | |
95939aed | 1808 | /* Also, remove the runtime directory */ |
bb0c0d6f | 1809 | unit_destroy_runtime_data(UNIT(s), &s->exec_context); |
e66cf1a3 | 1810 | |
00d9ef85 LP |
1811 | /* Get rid of the IPC bits of the user */ |
1812 | unit_unref_uid_gid(UNIT(s), true); | |
1813 | ||
29206d46 LP |
1814 | /* Release the user, and destroy it if we are the only remaining owner */ |
1815 | dynamic_creds_destroy(&s->dynamic_creds); | |
1816 | ||
9285c9ff LN |
1817 | /* Try to delete the pid file. At this point it will be |
1818 | * out-of-date, and some software might be confused by it, so | |
1819 | * let's remove it. */ | |
1820 | if (s->pid_file) | |
fabab190 | 1821 | (void) unlink(s->pid_file); |
9285c9ff | 1822 | |
6f765baf LP |
1823 | /* Reset TTY ownership if necessary */ |
1824 | exec_context_revert_tty(&s->exec_context); | |
1825 | ||
034c6ed7 LP |
1826 | return; |
1827 | ||
1828 | fail: | |
f2341e0a | 1829 | log_unit_warning_errno(UNIT(s), r, "Failed to run install restart timer: %m"); |
f42806df | 1830 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); |
034c6ed7 LP |
1831 | } |
1832 | ||
f42806df | 1833 | static void service_enter_stop_post(Service *s, ServiceResult f) { |
034c6ed7 LP |
1834 | int r; |
1835 | assert(s); | |
1836 | ||
a0fef983 | 1837 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1838 | s->result = f; |
034c6ed7 | 1839 | |
5e94833f | 1840 | service_unwatch_control_pid(s); |
50be4f4a | 1841 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
5e94833f | 1842 | |
117dcc57 ZJS |
1843 | s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST]; |
1844 | if (s->control_command) { | |
867b3b7d LP |
1845 | s->control_command_id = SERVICE_EXEC_STOP_POST; |
1846 | ||
ecedd90f LP |
1847 | r = service_spawn(s, |
1848 | s->control_command, | |
21b2ce39 | 1849 | s->timeout_stop_usec, |
78f93209 | 1850 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_IS_CONTROL|EXEC_SETENV_RESULT|EXEC_CONTROL_CGROUP, |
ecedd90f LP |
1851 | &s->control_pid); |
1852 | if (r < 0) | |
034c6ed7 LP |
1853 | goto fail; |
1854 | ||
80876c20 LP |
1855 | service_set_state(s, SERVICE_STOP_POST); |
1856 | } else | |
ac84d1fb | 1857 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
1858 | |
1859 | return; | |
1860 | ||
1861 | fail: | |
f2341e0a | 1862 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop-post' task: %m"); |
f42806df | 1863 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1864 | } |
1865 | ||
a232ebcc | 1866 | static int state_to_kill_operation(Service *s, ServiceState state) { |
4940c0b0 LP |
1867 | switch (state) { |
1868 | ||
c87700a1 | 1869 | case SERVICE_STOP_WATCHDOG: |
bf760801 | 1870 | case SERVICE_FINAL_WATCHDOG: |
c87700a1 | 1871 | return KILL_WATCHDOG; |
4940c0b0 LP |
1872 | |
1873 | case SERVICE_STOP_SIGTERM: | |
a232ebcc ZJS |
1874 | if (unit_has_job_type(UNIT(s), JOB_RESTART)) |
1875 | return KILL_RESTART; | |
1876 | _fallthrough_; | |
1877 | ||
4940c0b0 LP |
1878 | case SERVICE_FINAL_SIGTERM: |
1879 | return KILL_TERMINATE; | |
1880 | ||
1881 | case SERVICE_STOP_SIGKILL: | |
1882 | case SERVICE_FINAL_SIGKILL: | |
1883 | return KILL_KILL; | |
1884 | ||
1885 | default: | |
1886 | return _KILL_OPERATION_INVALID; | |
1887 | } | |
1888 | } | |
1889 | ||
f42806df | 1890 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) { |
bf760801 | 1891 | int kill_operation, r; |
034c6ed7 LP |
1892 | |
1893 | assert(s); | |
1894 | ||
a0fef983 | 1895 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1896 | s->result = f; |
034c6ed7 | 1897 | |
50be4f4a LP |
1898 | /* Before sending any signal, make sure we track all members of this cgroup */ |
1899 | (void) unit_watch_all_pids(UNIT(s)); | |
1900 | ||
1901 | /* Also, enqueue a job that we recheck all our PIDs a bit later, given that it's likely some processes have | |
1902 | * died now */ | |
1903 | (void) unit_enqueue_rewatch_pids(UNIT(s)); | |
a911bb9a | 1904 | |
bf760801 | 1905 | kill_operation = state_to_kill_operation(s, state); |
cd2086fe LP |
1906 | r = unit_kill_context( |
1907 | UNIT(s), | |
1908 | &s->kill_context, | |
bf760801 | 1909 | kill_operation, |
cd2086fe LP |
1910 | s->main_pid, |
1911 | s->control_pid, | |
1912 | s->main_pid_alien); | |
1913 | if (r < 0) | |
1914 | goto fail; | |
034c6ed7 | 1915 | |
cd2086fe | 1916 | if (r > 0) { |
dc653bf4 | 1917 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), |
bf760801 | 1918 | kill_operation == KILL_WATCHDOG ? service_timeout_abort_usec(s) : s->timeout_stop_usec)); |
36c16a7c LP |
1919 | if (r < 0) |
1920 | goto fail; | |
d6ea93e3 | 1921 | |
80876c20 | 1922 | service_set_state(s, state); |
c87700a1 | 1923 | } else if (IN_SET(state, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM) && s->kill_context.send_sigkill) |
ac84d1fb | 1924 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_SUCCESS); |
c87700a1 | 1925 | else if (IN_SET(state, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 1926 | service_enter_stop_post(s, SERVICE_SUCCESS); |
bf760801 | 1927 | else if (IN_SET(state, SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM) && s->kill_context.send_sigkill) |
ac84d1fb | 1928 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_SUCCESS); |
80876c20 | 1929 | else |
f42806df | 1930 | service_enter_dead(s, SERVICE_SUCCESS, true); |
034c6ed7 LP |
1931 | |
1932 | return; | |
1933 | ||
1934 | fail: | |
f2341e0a | 1935 | log_unit_warning_errno(UNIT(s), r, "Failed to kill processes: %m"); |
034c6ed7 | 1936 | |
c87700a1 | 1937 | if (IN_SET(state, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 1938 | service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES); |
034c6ed7 | 1939 | else |
f42806df | 1940 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
034c6ed7 LP |
1941 | } |
1942 | ||
308d72dc LP |
1943 | static void service_enter_stop_by_notify(Service *s) { |
1944 | assert(s); | |
1945 | ||
50be4f4a | 1946 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
308d72dc | 1947 | |
36c16a7c | 1948 | service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_stop_usec)); |
308d72dc | 1949 | |
6041a7ee MS |
1950 | /* The service told us it's stopping, so it's as if we SIGTERM'd it. */ |
1951 | service_set_state(s, SERVICE_STOP_SIGTERM); | |
308d72dc LP |
1952 | } |
1953 | ||
f42806df | 1954 | static void service_enter_stop(Service *s, ServiceResult f) { |
034c6ed7 | 1955 | int r; |
5925dd3c | 1956 | |
034c6ed7 LP |
1957 | assert(s); |
1958 | ||
a0fef983 | 1959 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1960 | s->result = f; |
034c6ed7 | 1961 | |
5e94833f | 1962 | service_unwatch_control_pid(s); |
50be4f4a | 1963 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
5e94833f | 1964 | |
117dcc57 ZJS |
1965 | s->control_command = s->exec_command[SERVICE_EXEC_STOP]; |
1966 | if (s->control_command) { | |
867b3b7d LP |
1967 | s->control_command_id = SERVICE_EXEC_STOP; |
1968 | ||
ecedd90f LP |
1969 | r = service_spawn(s, |
1970 | s->control_command, | |
21b2ce39 | 1971 | s->timeout_stop_usec, |
78f93209 | 1972 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_SETENV_RESULT|EXEC_CONTROL_CGROUP, |
ecedd90f LP |
1973 | &s->control_pid); |
1974 | if (r < 0) | |
034c6ed7 LP |
1975 | goto fail; |
1976 | ||
80876c20 LP |
1977 | service_set_state(s, SERVICE_STOP); |
1978 | } else | |
f42806df | 1979 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
1980 | |
1981 | return; | |
1982 | ||
1983 | fail: | |
f2341e0a | 1984 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop' task: %m"); |
f42806df | 1985 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1986 | } |
1987 | ||
957c3cf9 LP |
1988 | static bool service_good(Service *s) { |
1989 | int main_pid_ok; | |
1990 | assert(s); | |
1991 | ||
1992 | if (s->type == SERVICE_DBUS && !s->bus_name_good) | |
1993 | return false; | |
1994 | ||
1995 | main_pid_ok = main_pid_good(s); | |
1996 | if (main_pid_ok > 0) /* It's alive */ | |
1997 | return true; | |
1998 | if (main_pid_ok == 0) /* It's dead */ | |
1999 | return false; | |
2000 | ||
2001 | /* OK, we don't know anything about the main PID, maybe | |
2002 | * because there is none. Let's check the control group | |
2003 | * instead. */ | |
2004 | ||
2005 | return cgroup_good(s) != 0; | |
2006 | } | |
2007 | ||
f42806df | 2008 | static void service_enter_running(Service *s, ServiceResult f) { |
80876c20 LP |
2009 | assert(s); |
2010 | ||
a0fef983 | 2011 | if (s->result == SERVICE_SUCCESS) |
f42806df | 2012 | s->result = f; |
80876c20 | 2013 | |
089b64d5 LP |
2014 | service_unwatch_control_pid(s); |
2015 | ||
ec5b1452 LP |
2016 | if (s->result != SERVICE_SUCCESS) |
2017 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); | |
2018 | else if (service_good(s)) { | |
308d72dc | 2019 | |
ec5b1452 | 2020 | /* If there are any queued up sd_notify() notifications, process them now */ |
308d72dc LP |
2021 | if (s->notify_state == NOTIFY_RELOADING) |
2022 | service_enter_reload_by_notify(s); | |
2023 | else if (s->notify_state == NOTIFY_STOPPING) | |
2024 | service_enter_stop_by_notify(s); | |
36c16a7c | 2025 | else { |
308d72dc | 2026 | service_set_state(s, SERVICE_RUNNING); |
5918a933 | 2027 | service_arm_timer(s, service_running_timeout(s)); |
36c16a7c | 2028 | } |
308d72dc | 2029 | |
ec5b1452 | 2030 | } else if (s->remain_after_exit) |
80876c20 LP |
2031 | service_set_state(s, SERVICE_EXITED); |
2032 | else | |
f42806df | 2033 | service_enter_stop(s, SERVICE_SUCCESS); |
80876c20 LP |
2034 | } |
2035 | ||
034c6ed7 LP |
2036 | static void service_enter_start_post(Service *s) { |
2037 | int r; | |
2038 | assert(s); | |
2039 | ||
5e94833f | 2040 | service_unwatch_control_pid(s); |
842129f5 | 2041 | service_reset_watchdog(s); |
bb242b7b | 2042 | |
117dcc57 ZJS |
2043 | s->control_command = s->exec_command[SERVICE_EXEC_START_POST]; |
2044 | if (s->control_command) { | |
867b3b7d LP |
2045 | s->control_command_id = SERVICE_EXEC_START_POST; |
2046 | ||
ecedd90f LP |
2047 | r = service_spawn(s, |
2048 | s->control_command, | |
21b2ce39 | 2049 | s->timeout_start_usec, |
78f93209 | 2050 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_CONTROL_CGROUP, |
ecedd90f LP |
2051 | &s->control_pid); |
2052 | if (r < 0) | |
034c6ed7 LP |
2053 | goto fail; |
2054 | ||
80876c20 LP |
2055 | service_set_state(s, SERVICE_START_POST); |
2056 | } else | |
f42806df | 2057 | service_enter_running(s, SERVICE_SUCCESS); |
034c6ed7 LP |
2058 | |
2059 | return; | |
2060 | ||
2061 | fail: | |
f2341e0a | 2062 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-post' task: %m"); |
f42806df | 2063 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
2064 | } |
2065 | ||
e9a4f676 | 2066 | static void service_kill_control_process(Service *s) { |
a6951a50 | 2067 | int r; |
4ad49000 | 2068 | |
a6951a50 LP |
2069 | assert(s); |
2070 | ||
e9a4f676 LP |
2071 | if (s->control_pid <= 0) |
2072 | return; | |
4ad49000 | 2073 | |
e9a4f676 LP |
2074 | r = kill_and_sigcont(s->control_pid, SIGKILL); |
2075 | if (r < 0) { | |
2076 | _cleanup_free_ char *comm = NULL; | |
a6951a50 | 2077 | |
e9a4f676 | 2078 | (void) get_process_comm(s->control_pid, &comm); |
a6951a50 | 2079 | |
e9a4f676 LP |
2080 | log_unit_debug_errno(UNIT(s), r, "Failed to kill control process " PID_FMT " (%s), ignoring: %m", |
2081 | s->control_pid, strna(comm)); | |
a6951a50 | 2082 | } |
4ad49000 LP |
2083 | } |
2084 | ||
c53d2d54 DB |
2085 | static int service_adverse_to_leftover_processes(Service *s) { |
2086 | assert(s); | |
2087 | ||
2088 | /* KillMode=mixed and control group are used to indicate that all process should be killed off. | |
4c425434 LP |
2089 | * SendSIGKILL= is used for services that require a clean shutdown. These are typically database |
2090 | * service where a SigKilled process would result in a lengthy recovery and who's shutdown or startup | |
2091 | * time is quite variable (so Timeout settings aren't of use). | |
c53d2d54 DB |
2092 | * |
2093 | * Here we take these two factors and refuse to start a service if there are existing processes | |
2094 | * within a control group. Databases, while generally having some protection against multiple | |
4c425434 | 2095 | * instances running, lets not stress the rigor of these. Also ExecStartPre= parts of the service |
c53d2d54 | 2096 | * aren't as rigoriously written to protect aganst against multiple use. */ |
4c425434 LP |
2097 | |
2098 | if (unit_warn_leftover_processes(UNIT(s), unit_log_leftover_process_start) > 0 && | |
c53d2d54 | 2099 | IN_SET(s->kill_context.kill_mode, KILL_MIXED, KILL_CONTROL_GROUP) && |
569554d9 ZJS |
2100 | !s->kill_context.send_sigkill) |
2101 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(EBUSY), | |
2102 | "Will not start SendSIGKILL=no service of type KillMode=control-group or mixed while processes exist"); | |
2103 | ||
c53d2d54 DB |
2104 | return 0; |
2105 | } | |
2106 | ||
034c6ed7 | 2107 | static void service_enter_start(Service *s) { |
4ad49000 | 2108 | ExecCommand *c; |
36c16a7c | 2109 | usec_t timeout; |
034c6ed7 LP |
2110 | pid_t pid; |
2111 | int r; | |
2112 | ||
2113 | assert(s); | |
2114 | ||
41efeaec LP |
2115 | service_unwatch_control_pid(s); |
2116 | service_unwatch_main_pid(s); | |
80876c20 | 2117 | |
c53d2d54 DB |
2118 | r = service_adverse_to_leftover_processes(s); |
2119 | if (r < 0) | |
2120 | goto fail; | |
a4634b21 | 2121 | |
867b3b7d LP |
2122 | if (s->type == SERVICE_FORKING) { |
2123 | s->control_command_id = SERVICE_EXEC_START; | |
2124 | c = s->control_command = s->exec_command[SERVICE_EXEC_START]; | |
2125 | ||
2126 | s->main_command = NULL; | |
2127 | } else { | |
2128 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
2129 | s->control_command = NULL; | |
2130 | ||
2131 | c = s->main_command = s->exec_command[SERVICE_EXEC_START]; | |
2132 | } | |
34e9ba66 | 2133 | |
96fb8242 | 2134 | if (!c) { |
47fffb35 | 2135 | if (s->type != SERVICE_ONESHOT) { |
cbc056c8 ZJS |
2136 | /* There's no command line configured for the main command? Hmm, that is strange. |
2137 | * This can only happen if the configuration changes at runtime. In this case, | |
2138 | * let's enter a failure state. */ | |
d85ff944 | 2139 | r = log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENXIO), "There's no 'start' task anymore we could start."); |
47fffb35 LP |
2140 | goto fail; |
2141 | } | |
2142 | ||
ef5ae8e7 ZJS |
2143 | /* We force a fake state transition here. Otherwise, the unit would go directly from |
2144 | * SERVICE_DEAD to SERVICE_DEAD without SERVICE_ACTIVATING or SERVICE_ACTIVE | |
5238e957 | 2145 | * in between. This way we can later trigger actions that depend on the state |
ef5ae8e7 ZJS |
2146 | * transition, including SuccessAction=. */ |
2147 | service_set_state(s, SERVICE_START); | |
2148 | ||
96fb8242 LP |
2149 | service_enter_start_post(s); |
2150 | return; | |
2151 | } | |
2152 | ||
36c16a7c LP |
2153 | if (IN_SET(s->type, SERVICE_SIMPLE, SERVICE_IDLE)) |
2154 | /* For simple + idle this is the main process. We don't apply any timeout here, but | |
2155 | * service_enter_running() will later apply the .runtime_max_usec timeout. */ | |
2156 | timeout = USEC_INFINITY; | |
2157 | else | |
2158 | timeout = s->timeout_start_usec; | |
2159 | ||
ecedd90f LP |
2160 | r = service_spawn(s, |
2161 | c, | |
36c16a7c | 2162 | timeout, |
bb0c0d6f | 2163 | EXEC_PASS_FDS|EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_SET_WATCHDOG|EXEC_WRITE_CREDENTIALS, |
ecedd90f LP |
2164 | &pid); |
2165 | if (r < 0) | |
034c6ed7 LP |
2166 | goto fail; |
2167 | ||
36c16a7c | 2168 | if (IN_SET(s->type, SERVICE_SIMPLE, SERVICE_IDLE)) { |
034c6ed7 LP |
2169 | /* For simple services we immediately start |
2170 | * the START_POST binaries. */ | |
2171 | ||
5925dd3c | 2172 | service_set_main_pid(s, pid); |
034c6ed7 LP |
2173 | service_enter_start_post(s); |
2174 | ||
2175 | } else if (s->type == SERVICE_FORKING) { | |
2176 | ||
2177 | /* For forking services we wait until the start | |
2178 | * process exited. */ | |
2179 | ||
e55224ca | 2180 | s->control_pid = pid; |
80876c20 LP |
2181 | service_set_state(s, SERVICE_START); |
2182 | ||
5686391b | 2183 | } else if (IN_SET(s->type, SERVICE_ONESHOT, SERVICE_DBUS, SERVICE_NOTIFY, SERVICE_EXEC)) { |
7d55e835 | 2184 | |
5686391b | 2185 | /* For oneshot services we wait until the start process exited, too, but it is our main process. */ |
7d55e835 | 2186 | |
5686391b LP |
2187 | /* For D-Bus services we know the main pid right away, but wait for the bus name to appear on the |
2188 | * bus. 'notify' and 'exec' services are similar. */ | |
05e343b7 | 2189 | |
5925dd3c | 2190 | service_set_main_pid(s, pid); |
80876c20 | 2191 | service_set_state(s, SERVICE_START); |
034c6ed7 | 2192 | } else |
04499a70 | 2193 | assert_not_reached(); |
034c6ed7 LP |
2194 | |
2195 | return; | |
2196 | ||
2197 | fail: | |
f2341e0a | 2198 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start' task: %m"); |
c3fda31d | 2199 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
2200 | } |
2201 | ||
2202 | static void service_enter_start_pre(Service *s) { | |
2203 | int r; | |
2204 | ||
2205 | assert(s); | |
2206 | ||
5e94833f LP |
2207 | service_unwatch_control_pid(s); |
2208 | ||
117dcc57 ZJS |
2209 | s->control_command = s->exec_command[SERVICE_EXEC_START_PRE]; |
2210 | if (s->control_command) { | |
8f53a7b8 | 2211 | |
c53d2d54 DB |
2212 | r = service_adverse_to_leftover_processes(s); |
2213 | if (r < 0) | |
2214 | goto fail; | |
a4634b21 | 2215 | |
867b3b7d LP |
2216 | s->control_command_id = SERVICE_EXEC_START_PRE; |
2217 | ||
ecedd90f LP |
2218 | r = service_spawn(s, |
2219 | s->control_command, | |
21b2ce39 | 2220 | s->timeout_start_usec, |
1703fa41 | 2221 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_APPLY_TTY_STDIN, |
ecedd90f LP |
2222 | &s->control_pid); |
2223 | if (r < 0) | |
034c6ed7 LP |
2224 | goto fail; |
2225 | ||
80876c20 LP |
2226 | service_set_state(s, SERVICE_START_PRE); |
2227 | } else | |
034c6ed7 LP |
2228 | service_enter_start(s); |
2229 | ||
2230 | return; | |
2231 | ||
2232 | fail: | |
f2341e0a | 2233 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-pre' task: %m"); |
f42806df | 2234 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
034c6ed7 LP |
2235 | } |
2236 | ||
31cd5f63 AZ |
2237 | static void service_enter_condition(Service *s) { |
2238 | int r; | |
2239 | ||
2240 | assert(s); | |
2241 | ||
2242 | service_unwatch_control_pid(s); | |
2243 | ||
2244 | s->control_command = s->exec_command[SERVICE_EXEC_CONDITION]; | |
2245 | if (s->control_command) { | |
2246 | ||
2247 | r = service_adverse_to_leftover_processes(s); | |
2248 | if (r < 0) | |
2249 | goto fail; | |
2250 | ||
2251 | s->control_command_id = SERVICE_EXEC_CONDITION; | |
2252 | ||
2253 | r = service_spawn(s, | |
2254 | s->control_command, | |
2255 | s->timeout_start_usec, | |
2256 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_APPLY_TTY_STDIN, | |
2257 | &s->control_pid); | |
2258 | ||
2259 | if (r < 0) | |
2260 | goto fail; | |
2261 | ||
2262 | service_set_state(s, SERVICE_CONDITION); | |
2263 | } else | |
2264 | service_enter_start_pre(s); | |
2265 | ||
2266 | return; | |
2267 | ||
2268 | fail: | |
2269 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'exec-condition' task: %m"); | |
2270 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); | |
2271 | } | |
2272 | ||
034c6ed7 | 2273 | static void service_enter_restart(Service *s) { |
4afd3348 | 2274 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
034c6ed7 | 2275 | int r; |
398ef8ba | 2276 | |
034c6ed7 LP |
2277 | assert(s); |
2278 | ||
28a2dfe8 | 2279 | if (unit_has_job_type(UNIT(s), JOB_STOP)) { |
a8bb2e65 | 2280 | /* Don't restart things if we are going down anyway */ |
f2341e0a | 2281 | log_unit_info(UNIT(s), "Stop job pending for unit, delaying automatic restart."); |
2edfa366 | 2282 | |
36c16a7c | 2283 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->restart_usec)); |
a8bb2e65 | 2284 | if (r < 0) |
2edfa366 | 2285 | goto fail; |
feae8adb DW |
2286 | |
2287 | return; | |
2edfa366 LP |
2288 | } |
2289 | ||
48bb5876 DW |
2290 | /* Any units that are bound to this service must also be |
2291 | * restarted. We use JOB_RESTART (instead of the more obvious | |
2292 | * JOB_START) here so that those dependency jobs will be added | |
2293 | * as well. */ | |
50cbaba4 | 2294 | r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_REPLACE, NULL, &error, NULL); |
48bb5876 | 2295 | if (r < 0) |
034c6ed7 LP |
2296 | goto fail; |
2297 | ||
7a0019d3 | 2298 | /* Count the jobs we enqueue for restarting. This counter is maintained as long as the unit isn't fully |
f0c7e594 | 2299 | * stopped, i.e. as long as it remains up or remains in auto-start states. The user can reset the counter |
7a0019d3 LP |
2300 | * explicitly however via the usual "systemctl reset-failure" logic. */ |
2301 | s->n_restarts ++; | |
2302 | s->flush_n_restarts = false; | |
2303 | ||
c2503e35 RH |
2304 | log_unit_struct(UNIT(s), LOG_INFO, |
2305 | "MESSAGE_ID=" SD_MESSAGE_UNIT_RESTART_SCHEDULED_STR, | |
2306 | LOG_UNIT_INVOCATION_ID(UNIT(s)), | |
2307 | LOG_UNIT_MESSAGE(UNIT(s), "Scheduled restart job, restart counter is at %u.", s->n_restarts), | |
2308 | "N_RESTARTS=%u", s->n_restarts); | |
7a0019d3 LP |
2309 | |
2310 | /* Notify clients about changed restart counter */ | |
2311 | unit_add_to_dbus_queue(UNIT(s)); | |
2312 | ||
a8bb2e65 LP |
2313 | /* Note that we stay in the SERVICE_AUTO_RESTART state here, |
2314 | * it will be canceled as part of the service_stop() call that | |
2315 | * is executed as part of JOB_RESTART. */ | |
2316 | ||
034c6ed7 LP |
2317 | return; |
2318 | ||
2319 | fail: | |
2a03b9ed | 2320 | log_unit_warning(UNIT(s), "Failed to schedule restart job: %s", bus_error_message(&error, r)); |
f42806df | 2321 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); |
034c6ed7 LP |
2322 | } |
2323 | ||
308d72dc | 2324 | static void service_enter_reload_by_notify(Service *s) { |
15d167f8 JW |
2325 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
2326 | int r; | |
2327 | ||
308d72dc LP |
2328 | assert(s); |
2329 | ||
36c16a7c | 2330 | service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_start_usec)); |
308d72dc | 2331 | service_set_state(s, SERVICE_RELOAD); |
15d167f8 JW |
2332 | |
2333 | /* service_enter_reload_by_notify is never called during a reload, thus no loops are possible. */ | |
2334 | r = manager_propagate_reload(UNIT(s)->manager, UNIT(s), JOB_FAIL, &error); | |
2335 | if (r < 0) | |
2a03b9ed | 2336 | log_unit_warning(UNIT(s), "Failed to schedule propagation of reload: %s", bus_error_message(&error, r)); |
308d72dc LP |
2337 | } |
2338 | ||
034c6ed7 LP |
2339 | static void service_enter_reload(Service *s) { |
2340 | int r; | |
2341 | ||
2342 | assert(s); | |
2343 | ||
5e94833f | 2344 | service_unwatch_control_pid(s); |
95c906ae | 2345 | s->reload_result = SERVICE_SUCCESS; |
5e94833f | 2346 | |
117dcc57 ZJS |
2347 | s->control_command = s->exec_command[SERVICE_EXEC_RELOAD]; |
2348 | if (s->control_command) { | |
867b3b7d LP |
2349 | s->control_command_id = SERVICE_EXEC_RELOAD; |
2350 | ||
ecedd90f LP |
2351 | r = service_spawn(s, |
2352 | s->control_command, | |
21b2ce39 | 2353 | s->timeout_start_usec, |
78f93209 | 2354 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_CONTROL_CGROUP, |
ecedd90f LP |
2355 | &s->control_pid); |
2356 | if (r < 0) | |
034c6ed7 LP |
2357 | goto fail; |
2358 | ||
80876c20 LP |
2359 | service_set_state(s, SERVICE_RELOAD); |
2360 | } else | |
f42806df | 2361 | service_enter_running(s, SERVICE_SUCCESS); |
034c6ed7 LP |
2362 | |
2363 | return; | |
2364 | ||
2365 | fail: | |
f2341e0a | 2366 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'reload' task: %m"); |
f42806df LP |
2367 | s->reload_result = SERVICE_FAILURE_RESOURCES; |
2368 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
2369 | } |
2370 | ||
f42806df | 2371 | static void service_run_next_control(Service *s) { |
36c16a7c | 2372 | usec_t timeout; |
034c6ed7 LP |
2373 | int r; |
2374 | ||
2375 | assert(s); | |
2376 | assert(s->control_command); | |
2377 | assert(s->control_command->command_next); | |
2378 | ||
34e9ba66 | 2379 | assert(s->control_command_id != SERVICE_EXEC_START); |
034c6ed7 | 2380 | |
34e9ba66 | 2381 | s->control_command = s->control_command->command_next; |
5e94833f LP |
2382 | service_unwatch_control_pid(s); |
2383 | ||
31cd5f63 | 2384 | if (IN_SET(s->state, SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
36c16a7c LP |
2385 | timeout = s->timeout_start_usec; |
2386 | else | |
2387 | timeout = s->timeout_stop_usec; | |
2388 | ||
ecedd90f LP |
2389 | r = service_spawn(s, |
2390 | s->control_command, | |
36c16a7c | 2391 | timeout, |
1703fa41 | 2392 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL| |
31cd5f63 | 2393 | (IN_SET(s->control_command_id, SERVICE_EXEC_CONDITION, SERVICE_EXEC_START_PRE, SERVICE_EXEC_STOP_POST) ? EXEC_APPLY_TTY_STDIN : 0)| |
78f93209 LP |
2394 | (IN_SET(s->control_command_id, SERVICE_EXEC_STOP, SERVICE_EXEC_STOP_POST) ? EXEC_SETENV_RESULT : 0)| |
2395 | (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 |
2396 | &s->control_pid); |
2397 | if (r < 0) | |
034c6ed7 LP |
2398 | goto fail; |
2399 | ||
2400 | return; | |
2401 | ||
2402 | fail: | |
f2341e0a | 2403 | log_unit_warning_errno(UNIT(s), r, "Failed to run next control task: %m"); |
034c6ed7 | 2404 | |
31cd5f63 | 2405 | if (IN_SET(s->state, SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START_POST, SERVICE_STOP)) |
f42806df | 2406 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 | 2407 | else if (s->state == SERVICE_STOP_POST) |
f42806df | 2408 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
e2f3b44c | 2409 | else if (s->state == SERVICE_RELOAD) { |
f42806df LP |
2410 | s->reload_result = SERVICE_FAILURE_RESOURCES; |
2411 | service_enter_running(s, SERVICE_SUCCESS); | |
e2f3b44c | 2412 | } else |
f42806df | 2413 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
5cb5a6ff LP |
2414 | } |
2415 | ||
f42806df | 2416 | static void service_run_next_main(Service *s) { |
34e9ba66 LP |
2417 | pid_t pid; |
2418 | int r; | |
2419 | ||
2420 | assert(s); | |
867b3b7d LP |
2421 | assert(s->main_command); |
2422 | assert(s->main_command->command_next); | |
2423 | assert(s->type == SERVICE_ONESHOT); | |
34e9ba66 | 2424 | |
867b3b7d | 2425 | s->main_command = s->main_command->command_next; |
34e9ba66 LP |
2426 | service_unwatch_main_pid(s); |
2427 | ||
ecedd90f LP |
2428 | r = service_spawn(s, |
2429 | s->main_command, | |
21b2ce39 | 2430 | s->timeout_start_usec, |
1703fa41 | 2431 | EXEC_PASS_FDS|EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_SET_WATCHDOG, |
ecedd90f LP |
2432 | &pid); |
2433 | if (r < 0) | |
34e9ba66 LP |
2434 | goto fail; |
2435 | ||
2436 | service_set_main_pid(s, pid); | |
2437 | ||
2438 | return; | |
2439 | ||
2440 | fail: | |
f2341e0a | 2441 | log_unit_warning_errno(UNIT(s), r, "Failed to run next main task: %m"); |
f42806df | 2442 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
34e9ba66 LP |
2443 | } |
2444 | ||
87f0e418 LP |
2445 | static int service_start(Unit *u) { |
2446 | Service *s = SERVICE(u); | |
07299350 | 2447 | int r; |
5cb5a6ff LP |
2448 | |
2449 | assert(s); | |
2450 | ||
034c6ed7 LP |
2451 | /* We cannot fulfill this request right now, try again later |
2452 | * please! */ | |
a00973af | 2453 | if (IN_SET(s->state, |
c87700a1 | 2454 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 2455 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL, SERVICE_CLEANING)) |
5cb5a6ff LP |
2456 | return -EAGAIN; |
2457 | ||
034c6ed7 | 2458 | /* Already on it! */ |
31cd5f63 | 2459 | if (IN_SET(s->state, SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST)) |
034c6ed7 LP |
2460 | return 0; |
2461 | ||
2e9d6c12 | 2462 | /* A service that will be restarted must be stopped first to |
7f2cddae | 2463 | * trigger BindsTo and/or OnFailure dependencies. If a user |
2e9d6c12 | 2464 | * does not want to wait for the holdoff time to elapse, the |
d4943dc7 LP |
2465 | * service should be manually restarted, not started. We |
2466 | * simply return EAGAIN here, so that any start jobs stay | |
2467 | * queued, and assume that the auto restart timer will | |
2468 | * eventually trigger the restart. */ | |
2469 | if (s->state == SERVICE_AUTO_RESTART) | |
a8bb2e65 | 2470 | return -EAGAIN; |
2e9d6c12 | 2471 | |
a00973af | 2472 | assert(IN_SET(s->state, SERVICE_DEAD, SERVICE_FAILED)); |
5cb5a6ff | 2473 | |
4b58153d LP |
2474 | r = unit_acquire_invocation_id(u); |
2475 | if (r < 0) | |
2476 | return r; | |
2477 | ||
f42806df LP |
2478 | s->result = SERVICE_SUCCESS; |
2479 | s->reload_result = SERVICE_SUCCESS; | |
034c6ed7 | 2480 | s->main_pid_known = false; |
6dfa5494 | 2481 | s->main_pid_alien = false; |
47342320 | 2482 | s->forbid_restart = false; |
3c7416b6 | 2483 | |
a1e58e8e | 2484 | s->status_text = mfree(s->status_text); |
8cfdb077 LP |
2485 | s->status_errno = 0; |
2486 | ||
308d72dc LP |
2487 | s->notify_state = NOTIFY_UNKNOWN; |
2488 | ||
aa8c4bbf | 2489 | s->watchdog_original_usec = s->watchdog_usec; |
2787d83c | 2490 | s->watchdog_override_enable = false; |
aa8c4bbf | 2491 | s->watchdog_override_usec = USEC_INFINITY; |
2787d83c | 2492 | |
6a1d4d9f LP |
2493 | exec_command_reset_status_list_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); |
2494 | exec_status_reset(&s->main_exec_status); | |
2495 | ||
7a0019d3 LP |
2496 | /* This is not an automatic restart? Flush the restart counter then */ |
2497 | if (s->flush_n_restarts) { | |
2498 | s->n_restarts = 0; | |
2499 | s->flush_n_restarts = false; | |
2500 | } | |
2501 | ||
6a1d4d9f LP |
2502 | u->reset_accounting = true; |
2503 | ||
31cd5f63 | 2504 | service_enter_condition(s); |
82a2b6bb | 2505 | return 1; |
5cb5a6ff LP |
2506 | } |
2507 | ||
87f0e418 LP |
2508 | static int service_stop(Unit *u) { |
2509 | Service *s = SERVICE(u); | |
5cb5a6ff LP |
2510 | |
2511 | assert(s); | |
2512 | ||
a509f0e6 | 2513 | /* Don't create restart jobs from manual stops. */ |
47342320 | 2514 | s->forbid_restart = true; |
034c6ed7 | 2515 | |
e537352b | 2516 | /* Already on it */ |
a00973af | 2517 | if (IN_SET(s->state, |
dc653bf4 | 2518 | SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 2519 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) |
e537352b LP |
2520 | return 0; |
2521 | ||
f0c7b229 | 2522 | /* A restart will be scheduled or is in progress. */ |
034c6ed7 | 2523 | if (s->state == SERVICE_AUTO_RESTART) { |
0c7f15b3 | 2524 | service_set_state(s, SERVICE_DEAD); |
034c6ed7 LP |
2525 | return 0; |
2526 | } | |
2527 | ||
3f6c78dc LP |
2528 | /* If there's already something running we go directly into |
2529 | * kill mode. */ | |
31cd5f63 | 2530 | if (IN_SET(s->state, SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RELOAD, SERVICE_STOP_WATCHDOG)) { |
f42806df | 2531 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
3f6c78dc LP |
2532 | return 0; |
2533 | } | |
5cb5a6ff | 2534 | |
4c2f5842 LP |
2535 | /* If we are currently cleaning, then abort it, brutally. */ |
2536 | if (s->state == SERVICE_CLEANING) { | |
2537 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_SUCCESS); | |
2538 | return 0; | |
2539 | } | |
2540 | ||
a00973af | 2541 | assert(IN_SET(s->state, SERVICE_RUNNING, SERVICE_EXITED)); |
3a762661 | 2542 | |
f42806df | 2543 | service_enter_stop(s, SERVICE_SUCCESS); |
82a2b6bb | 2544 | return 1; |
5cb5a6ff LP |
2545 | } |
2546 | ||
87f0e418 LP |
2547 | static int service_reload(Unit *u) { |
2548 | Service *s = SERVICE(u); | |
034c6ed7 LP |
2549 | |
2550 | assert(s); | |
2551 | ||
3742095b | 2552 | assert(IN_SET(s->state, SERVICE_RUNNING, SERVICE_EXITED)); |
034c6ed7 LP |
2553 | |
2554 | service_enter_reload(s); | |
2d018ae2 | 2555 | return 1; |
5cb5a6ff LP |
2556 | } |
2557 | ||
44a6b1b6 | 2558 | _pure_ static bool service_can_reload(Unit *u) { |
87f0e418 | 2559 | Service *s = SERVICE(u); |
034c6ed7 LP |
2560 | |
2561 | assert(s); | |
2562 | ||
2563 | return !!s->exec_command[SERVICE_EXEC_RELOAD]; | |
2564 | } | |
2565 | ||
e266c068 MS |
2566 | static unsigned service_exec_command_index(Unit *u, ServiceExecCommand id, ExecCommand *current) { |
2567 | Service *s = SERVICE(u); | |
2568 | unsigned idx = 0; | |
2569 | ExecCommand *first, *c; | |
2570 | ||
2571 | assert(s); | |
5b99bd5f LP |
2572 | assert(id >= 0); |
2573 | assert(id < _SERVICE_EXEC_COMMAND_MAX); | |
e266c068 MS |
2574 | |
2575 | first = s->exec_command[id]; | |
2576 | ||
2577 | /* Figure out where we are in the list by walking back to the beginning */ | |
2578 | for (c = current; c != first; c = c->command_prev) | |
2579 | idx++; | |
2580 | ||
2581 | return idx; | |
2582 | } | |
2583 | ||
2584 | static int service_serialize_exec_command(Unit *u, FILE *f, ExecCommand *command) { | |
d68c645b | 2585 | _cleanup_free_ char *args = NULL, *p = NULL; |
e266c068 | 2586 | Service *s = SERVICE(u); |
d68c645b | 2587 | const char *type, *key; |
e266c068 | 2588 | ServiceExecCommand id; |
319a4f4b | 2589 | size_t length = 0; |
e266c068 | 2590 | unsigned idx; |
e266c068 | 2591 | char **arg; |
e266c068 MS |
2592 | |
2593 | assert(s); | |
2594 | assert(f); | |
2595 | ||
2596 | if (!command) | |
2597 | return 0; | |
2598 | ||
2599 | if (command == s->control_command) { | |
2600 | type = "control"; | |
2601 | id = s->control_command_id; | |
2602 | } else { | |
2603 | type = "main"; | |
2604 | id = SERVICE_EXEC_START; | |
2605 | } | |
2606 | ||
2607 | idx = service_exec_command_index(u, id, command); | |
2608 | ||
2609 | STRV_FOREACH(arg, command->argv) { | |
e266c068 | 2610 | _cleanup_free_ char *e = NULL; |
d68c645b | 2611 | size_t n; |
e266c068 | 2612 | |
d68c645b | 2613 | e = cescape(*arg); |
e266c068 | 2614 | if (!e) |
d68c645b | 2615 | return log_oom(); |
e266c068 MS |
2616 | |
2617 | n = strlen(e); | |
319a4f4b | 2618 | if (!GREEDY_REALLOC(args, length + 2 + n + 2)) |
d68c645b | 2619 | return log_oom(); |
e266c068 MS |
2620 | |
2621 | if (length > 0) | |
2622 | args[length++] = ' '; | |
2623 | ||
334c0979 | 2624 | args[length++] = '"'; |
e266c068 MS |
2625 | memcpy(args + length, e, n); |
2626 | length += n; | |
334c0979 | 2627 | args[length++] = '"'; |
e266c068 MS |
2628 | } |
2629 | ||
319a4f4b | 2630 | if (!GREEDY_REALLOC(args, length + 1)) |
d68c645b LP |
2631 | return log_oom(); |
2632 | ||
e266c068 MS |
2633 | args[length++] = 0; |
2634 | ||
d68c645b | 2635 | p = cescape(command->path); |
e266c068 | 2636 | if (!p) |
5b99bd5f | 2637 | return log_oom(); |
e266c068 | 2638 | |
d68c645b | 2639 | key = strjoina(type, "-command"); |
5b99bd5f LP |
2640 | (void) serialize_item_format(f, key, "%s %u %s %s", service_exec_command_to_string(id), idx, p, args); |
2641 | ||
2642 | return 0; | |
e266c068 MS |
2643 | } |
2644 | ||
a16e1123 LP |
2645 | static int service_serialize(Unit *u, FILE *f, FDSet *fds) { |
2646 | Service *s = SERVICE(u); | |
2339fc93 | 2647 | ServiceFDStore *fs; |
a34ceba6 | 2648 | int r; |
a16e1123 LP |
2649 | |
2650 | assert(u); | |
2651 | assert(f); | |
2652 | assert(fds); | |
2653 | ||
d68c645b LP |
2654 | (void) serialize_item(f, "state", service_state_to_string(s->state)); |
2655 | (void) serialize_item(f, "result", service_result_to_string(s->result)); | |
2656 | (void) serialize_item(f, "reload-result", service_result_to_string(s->reload_result)); | |
a16e1123 LP |
2657 | |
2658 | if (s->control_pid > 0) | |
d68c645b | 2659 | (void) serialize_item_format(f, "control-pid", PID_FMT, s->control_pid); |
a16e1123 | 2660 | |
5925dd3c | 2661 | if (s->main_pid_known && s->main_pid > 0) |
d68c645b | 2662 | (void) serialize_item_format(f, "main-pid", PID_FMT, s->main_pid); |
a16e1123 | 2663 | |
d68c645b LP |
2664 | (void) serialize_bool(f, "main-pid-known", s->main_pid_known); |
2665 | (void) serialize_bool(f, "bus-name-good", s->bus_name_good); | |
2666 | (void) serialize_bool(f, "bus-name-owner", s->bus_name_owner); | |
a16e1123 | 2667 | |
d68c645b LP |
2668 | (void) serialize_item_format(f, "n-restarts", "%u", s->n_restarts); |
2669 | (void) serialize_bool(f, "flush-n-restarts", s->flush_n_restarts); | |
7a0019d3 | 2670 | |
d68c645b | 2671 | r = serialize_item_escaped(f, "status-text", s->status_text); |
a34ceba6 LP |
2672 | if (r < 0) |
2673 | return r; | |
3a2776bc | 2674 | |
e266c068 MS |
2675 | service_serialize_exec_command(u, f, s->control_command); |
2676 | service_serialize_exec_command(u, f, s->main_command); | |
a16e1123 | 2677 | |
d68c645b | 2678 | r = serialize_fd(f, fds, "stdin-fd", s->stdin_fd); |
a34ceba6 LP |
2679 | if (r < 0) |
2680 | return r; | |
d68c645b | 2681 | r = serialize_fd(f, fds, "stdout-fd", s->stdout_fd); |
a34ceba6 LP |
2682 | if (r < 0) |
2683 | return r; | |
d68c645b | 2684 | r = serialize_fd(f, fds, "stderr-fd", s->stderr_fd); |
a34ceba6 LP |
2685 | if (r < 0) |
2686 | return r; | |
e44da745 | 2687 | |
5686391b | 2688 | if (s->exec_fd_event_source) { |
d68c645b | 2689 | r = serialize_fd(f, fds, "exec-fd", sd_event_source_get_io_fd(s->exec_fd_event_source)); |
5686391b LP |
2690 | if (r < 0) |
2691 | return r; | |
d68c645b LP |
2692 | |
2693 | (void) serialize_bool(f, "exec-fd-hot", s->exec_fd_hot); | |
5686391b LP |
2694 | } |
2695 | ||
9dfb64f8 | 2696 | if (UNIT_ISSET(s->accept_socket)) { |
d68c645b | 2697 | r = serialize_item(f, "accept-socket", UNIT_DEREF(s->accept_socket)->id); |
9dfb64f8 ZJS |
2698 | if (r < 0) |
2699 | return r; | |
2700 | } | |
2701 | ||
d68c645b | 2702 | r = serialize_fd(f, fds, "socket-fd", s->socket_fd); |
a34ceba6 LP |
2703 | if (r < 0) |
2704 | return r; | |
e44da745 | 2705 | |
2339fc93 | 2706 | LIST_FOREACH(fd_store, fs, s->fd_store) { |
8dd4c05b | 2707 | _cleanup_free_ char *c = NULL; |
2339fc93 LP |
2708 | int copy; |
2709 | ||
2710 | copy = fdset_put_dup(fds, fs->fd); | |
2711 | if (copy < 0) | |
d68c645b | 2712 | return log_error_errno(copy, "Failed to copy file descriptor for serialization: %m"); |
2339fc93 | 2713 | |
8dd4c05b | 2714 | c = cescape(fs->fdname); |
d68c645b LP |
2715 | if (!c) |
2716 | return log_oom(); | |
8dd4c05b | 2717 | |
30520492 | 2718 | (void) serialize_item_format(f, "fd-store-fd", "%i \"%s\" %i", copy, c, fs->do_poll); |
2339fc93 LP |
2719 | } |
2720 | ||
ecdbca40 | 2721 | if (s->main_exec_status.pid > 0) { |
d68c645b LP |
2722 | (void) serialize_item_format(f, "main-exec-status-pid", PID_FMT, s->main_exec_status.pid); |
2723 | (void) serialize_dual_timestamp(f, "main-exec-status-start", &s->main_exec_status.start_timestamp); | |
2724 | (void) serialize_dual_timestamp(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp); | |
ecdbca40 | 2725 | |
799fd0fd | 2726 | if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) { |
d68c645b LP |
2727 | (void) serialize_item_format(f, "main-exec-status-code", "%i", s->main_exec_status.code); |
2728 | (void) serialize_item_format(f, "main-exec-status-status", "%i", s->main_exec_status.status); | |
ecdbca40 LP |
2729 | } |
2730 | } | |
f06db334 | 2731 | |
d68c645b LP |
2732 | (void) serialize_dual_timestamp(f, "watchdog-timestamp", &s->watchdog_timestamp); |
2733 | (void) serialize_bool(f, "forbid-restart", s->forbid_restart); | |
6aca9a58 | 2734 | |
2787d83c | 2735 | if (s->watchdog_override_enable) |
d68c645b | 2736 | (void) serialize_item_format(f, "watchdog-override-usec", USEC_FMT, s->watchdog_override_usec); |
2787d83c | 2737 | |
aa8c4bbf LP |
2738 | if (s->watchdog_original_usec != USEC_INFINITY) |
2739 | (void) serialize_item_format(f, "watchdog-original-usec", USEC_FMT, s->watchdog_original_usec); | |
2740 | ||
a16e1123 LP |
2741 | return 0; |
2742 | } | |
2743 | ||
35243b77 | 2744 | int service_deserialize_exec_command( |
5b99bd5f LP |
2745 | Unit *u, |
2746 | const char *key, | |
2747 | const char *value) { | |
2748 | ||
e266c068 MS |
2749 | Service *s = SERVICE(u); |
2750 | int r; | |
2751 | unsigned idx = 0, i; | |
2752 | bool control, found = false; | |
2753 | ServiceExecCommand id = _SERVICE_EXEC_COMMAND_INVALID; | |
2754 | ExecCommand *command = NULL; | |
6eeec374 | 2755 | _cleanup_free_ char *path = NULL; |
e266c068 MS |
2756 | _cleanup_strv_free_ char **argv = NULL; |
2757 | ||
2758 | enum ExecCommandState { | |
2759 | STATE_EXEC_COMMAND_TYPE, | |
2760 | STATE_EXEC_COMMAND_INDEX, | |
2761 | STATE_EXEC_COMMAND_PATH, | |
2762 | STATE_EXEC_COMMAND_ARGS, | |
2763 | _STATE_EXEC_COMMAND_MAX, | |
2d93c20e | 2764 | _STATE_EXEC_COMMAND_INVALID = -EINVAL, |
e266c068 MS |
2765 | } state; |
2766 | ||
2767 | assert(s); | |
2768 | assert(key); | |
2769 | assert(value); | |
2770 | ||
2771 | control = streq(key, "control-command"); | |
2772 | ||
2773 | state = STATE_EXEC_COMMAND_TYPE; | |
2774 | ||
2775 | for (;;) { | |
2776 | _cleanup_free_ char *arg = NULL; | |
2777 | ||
334c0979 | 2778 | r = extract_first_word(&value, &arg, NULL, EXTRACT_CUNESCAPE | EXTRACT_UNQUOTE); |
efa3f34e LP |
2779 | if (r < 0) |
2780 | return r; | |
e266c068 MS |
2781 | if (r == 0) |
2782 | break; | |
e266c068 MS |
2783 | |
2784 | switch (state) { | |
2785 | case STATE_EXEC_COMMAND_TYPE: | |
2786 | id = service_exec_command_from_string(arg); | |
2787 | if (id < 0) | |
7211c853 | 2788 | return id; |
e266c068 MS |
2789 | |
2790 | state = STATE_EXEC_COMMAND_INDEX; | |
2791 | break; | |
2792 | case STATE_EXEC_COMMAND_INDEX: | |
2793 | r = safe_atou(arg, &idx); | |
2794 | if (r < 0) | |
7211c853 | 2795 | return r; |
e266c068 MS |
2796 | |
2797 | state = STATE_EXEC_COMMAND_PATH; | |
2798 | break; | |
2799 | case STATE_EXEC_COMMAND_PATH: | |
ae2a15bc | 2800 | path = TAKE_PTR(arg); |
e266c068 | 2801 | state = STATE_EXEC_COMMAND_ARGS; |
e266c068 MS |
2802 | break; |
2803 | case STATE_EXEC_COMMAND_ARGS: | |
2804 | r = strv_extend(&argv, arg); | |
2805 | if (r < 0) | |
2806 | return -ENOMEM; | |
2807 | break; | |
2808 | default: | |
04499a70 | 2809 | assert_not_reached(); |
e266c068 MS |
2810 | } |
2811 | } | |
2812 | ||
2813 | if (state != STATE_EXEC_COMMAND_ARGS) | |
2814 | return -EINVAL; | |
90204792 ZJS |
2815 | if (strv_isempty(argv)) |
2816 | return -EINVAL; /* At least argv[0] must be always present. */ | |
e266c068 MS |
2817 | |
2818 | /* Let's check whether exec command on given offset matches data that we just deserialized */ | |
2819 | for (command = s->exec_command[id], i = 0; command; command = command->command_next, i++) { | |
2820 | if (i != idx) | |
2821 | continue; | |
2822 | ||
2823 | found = strv_equal(argv, command->argv) && streq(command->path, path); | |
2824 | break; | |
2825 | } | |
2826 | ||
2827 | if (!found) { | |
2828 | /* Command at the index we serialized is different, let's look for command that exactly | |
2829 | * matches but is on different index. If there is no such command we will not resume execution. */ | |
2830 | for (command = s->exec_command[id]; command; command = command->command_next) | |
2831 | if (strv_equal(command->argv, argv) && streq(command->path, path)) | |
2832 | break; | |
2833 | } | |
2834 | ||
e9da62b1 | 2835 | if (command && control) { |
e266c068 | 2836 | s->control_command = command; |
e9da62b1 LP |
2837 | s->control_command_id = id; |
2838 | } else if (command) | |
e266c068 MS |
2839 | s->main_command = command; |
2840 | else | |
2841 | log_unit_warning(u, "Current command vanished from the unit file, execution of the command list won't be resumed."); | |
2842 | ||
2843 | return 0; | |
2844 | } | |
2845 | ||
a16e1123 LP |
2846 | static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { |
2847 | Service *s = SERVICE(u); | |
2339fc93 | 2848 | int r; |
a16e1123 LP |
2849 | |
2850 | assert(u); | |
2851 | assert(key); | |
2852 | assert(value); | |
2853 | assert(fds); | |
2854 | ||
2855 | if (streq(key, "state")) { | |
2856 | ServiceState state; | |
2857 | ||
117dcc57 ZJS |
2858 | state = service_state_from_string(value); |
2859 | if (state < 0) | |
f2341e0a | 2860 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
2861 | else |
2862 | s->deserialized_state = state; | |
f42806df LP |
2863 | } else if (streq(key, "result")) { |
2864 | ServiceResult f; | |
2865 | ||
2866 | f = service_result_from_string(value); | |
2867 | if (f < 0) | |
f2341e0a | 2868 | log_unit_debug(u, "Failed to parse result value: %s", value); |
f42806df LP |
2869 | else if (f != SERVICE_SUCCESS) |
2870 | s->result = f; | |
2871 | ||
2872 | } else if (streq(key, "reload-result")) { | |
2873 | ServiceResult f; | |
2874 | ||
2875 | f = service_result_from_string(value); | |
2876 | if (f < 0) | |
f2341e0a | 2877 | log_unit_debug(u, "Failed to parse reload result value: %s", value); |
f42806df LP |
2878 | else if (f != SERVICE_SUCCESS) |
2879 | s->reload_result = f; | |
a16e1123 | 2880 | |
a16e1123 | 2881 | } else if (streq(key, "control-pid")) { |
5925dd3c | 2882 | pid_t pid; |
a16e1123 | 2883 | |
e364ad06 | 2884 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2885 | log_unit_debug(u, "Failed to parse control-pid value: %s", value); |
a16e1123 | 2886 | else |
e55224ca | 2887 | s->control_pid = pid; |
a16e1123 | 2888 | } else if (streq(key, "main-pid")) { |
5925dd3c | 2889 | pid_t pid; |
a16e1123 | 2890 | |
e364ad06 | 2891 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2892 | log_unit_debug(u, "Failed to parse main-pid value: %s", value); |
eabd3e56 LP |
2893 | else |
2894 | (void) service_set_main_pid(s, pid); | |
a16e1123 LP |
2895 | } else if (streq(key, "main-pid-known")) { |
2896 | int b; | |
2897 | ||
117dcc57 ZJS |
2898 | b = parse_boolean(value); |
2899 | if (b < 0) | |
f2341e0a | 2900 | log_unit_debug(u, "Failed to parse main-pid-known value: %s", value); |
a16e1123 LP |
2901 | else |
2902 | s->main_pid_known = b; | |
de1d4f9b WF |
2903 | } else if (streq(key, "bus-name-good")) { |
2904 | int b; | |
2905 | ||
2906 | b = parse_boolean(value); | |
2907 | if (b < 0) | |
2908 | log_unit_debug(u, "Failed to parse bus-name-good value: %s", value); | |
2909 | else | |
2910 | s->bus_name_good = b; | |
d8ccf5fd DM |
2911 | } else if (streq(key, "bus-name-owner")) { |
2912 | r = free_and_strdup(&s->bus_name_owner, value); | |
2913 | if (r < 0) | |
2914 | log_unit_error_errno(u, r, "Unable to deserialize current bus owner %s: %m", value); | |
3a2776bc LP |
2915 | } else if (streq(key, "status-text")) { |
2916 | char *t; | |
e437538f | 2917 | ssize_t l; |
3a2776bc | 2918 | |
e437538f ZJS |
2919 | l = cunescape(value, 0, &t); |
2920 | if (l < 0) | |
2921 | log_unit_debug_errno(u, l, "Failed to unescape status text '%s': %m", value); | |
efa3f34e LP |
2922 | else |
2923 | free_and_replace(s->status_text, t); | |
3a2776bc | 2924 | |
9dfb64f8 ZJS |
2925 | } else if (streq(key, "accept-socket")) { |
2926 | Unit *socket; | |
2927 | ||
2928 | r = manager_load_unit(u->manager, value, NULL, NULL, &socket); | |
2929 | if (r < 0) | |
5e1ee764 | 2930 | log_unit_debug_errno(u, r, "Failed to load accept-socket unit '%s': %m", value); |
9dfb64f8 | 2931 | else { |
7f7d01ed | 2932 | unit_ref_set(&s->accept_socket, u, socket); |
9dfb64f8 ZJS |
2933 | SOCKET(socket)->n_connections++; |
2934 | } | |
2935 | ||
a16e1123 LP |
2936 | } else if (streq(key, "socket-fd")) { |
2937 | int fd; | |
2938 | ||
2939 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 2940 | log_unit_debug(u, "Failed to parse socket-fd value: %s", value); |
a16e1123 | 2941 | else { |
574634bc | 2942 | asynchronous_close(s->socket_fd); |
a16e1123 LP |
2943 | s->socket_fd = fdset_remove(fds, fd); |
2944 | } | |
2339fc93 | 2945 | } else if (streq(key, "fd-store-fd")) { |
30520492 | 2946 | _cleanup_free_ char *fdv = NULL, *fdn = NULL, *fdp = NULL; |
2339fc93 | 2947 | int fd; |
30520492 | 2948 | int do_poll; |
2339fc93 | 2949 | |
30520492 KL |
2950 | r = extract_first_word(&value, &fdv, NULL, 0); |
2951 | if (r <= 0 || safe_atoi(fdv, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) { | |
f2341e0a | 2952 | log_unit_debug(u, "Failed to parse fd-store-fd value: %s", value); |
30520492 KL |
2953 | return 0; |
2954 | } | |
8dd4c05b | 2955 | |
30520492 KL |
2956 | r = extract_first_word(&value, &fdn, NULL, EXTRACT_CUNESCAPE | EXTRACT_UNQUOTE); |
2957 | if (r <= 0) { | |
95599cac | 2958 | log_unit_debug(u, "Failed to parse fd-store-fd value: %s", value); |
30520492 KL |
2959 | return 0; |
2960 | } | |
8dd4c05b | 2961 | |
30520492 KL |
2962 | r = extract_first_word(&value, &fdp, NULL, 0); |
2963 | if (r == 0) { | |
2964 | /* If the value is not present, we assume the default */ | |
2965 | do_poll = 1; | |
2966 | } else if (r < 0 || safe_atoi(fdp, &do_poll) < 0) { | |
2967 | log_unit_debug_errno(u, r, "Failed to parse fd-store-fd value \"%s\": %m", value); | |
2968 | return 0; | |
2339fc93 LP |
2969 | } |
2970 | ||
30520492 KL |
2971 | r = service_add_fd_store(s, fd, fdn, do_poll); |
2972 | if (r < 0) | |
2973 | log_unit_error_errno(u, r, "Failed to add fd to store: %m"); | |
2974 | else | |
2975 | fdset_remove(fds, fd); | |
ecdbca40 LP |
2976 | } else if (streq(key, "main-exec-status-pid")) { |
2977 | pid_t pid; | |
2978 | ||
e364ad06 | 2979 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2980 | log_unit_debug(u, "Failed to parse main-exec-status-pid value: %s", value); |
ecdbca40 LP |
2981 | else |
2982 | s->main_exec_status.pid = pid; | |
2983 | } else if (streq(key, "main-exec-status-code")) { | |
2984 | int i; | |
2985 | ||
e364ad06 | 2986 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 2987 | log_unit_debug(u, "Failed to parse main-exec-status-code value: %s", value); |
ecdbca40 LP |
2988 | else |
2989 | s->main_exec_status.code = i; | |
2990 | } else if (streq(key, "main-exec-status-status")) { | |
2991 | int i; | |
2992 | ||
e364ad06 | 2993 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 2994 | log_unit_debug(u, "Failed to parse main-exec-status-status value: %s", value); |
ecdbca40 LP |
2995 | else |
2996 | s->main_exec_status.status = i; | |
799fd0fd | 2997 | } else if (streq(key, "main-exec-status-start")) |
d68c645b | 2998 | deserialize_dual_timestamp(value, &s->main_exec_status.start_timestamp); |
799fd0fd | 2999 | else if (streq(key, "main-exec-status-exit")) |
d68c645b | 3000 | deserialize_dual_timestamp(value, &s->main_exec_status.exit_timestamp); |
a6927d7f | 3001 | else if (streq(key, "watchdog-timestamp")) |
d68c645b | 3002 | deserialize_dual_timestamp(value, &s->watchdog_timestamp); |
613b411c | 3003 | else if (streq(key, "forbid-restart")) { |
6aca9a58 SE |
3004 | int b; |
3005 | ||
3006 | b = parse_boolean(value); | |
3007 | if (b < 0) | |
f2341e0a | 3008 | log_unit_debug(u, "Failed to parse forbid-restart value: %s", value); |
6aca9a58 SE |
3009 | else |
3010 | s->forbid_restart = b; | |
a34ceba6 LP |
3011 | } else if (streq(key, "stdin-fd")) { |
3012 | int fd; | |
3013 | ||
3014 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
3015 | log_unit_debug(u, "Failed to parse stdin-fd value: %s", value); | |
3016 | else { | |
3017 | asynchronous_close(s->stdin_fd); | |
3018 | s->stdin_fd = fdset_remove(fds, fd); | |
1e22b5cd | 3019 | s->exec_context.stdio_as_fds = true; |
a34ceba6 LP |
3020 | } |
3021 | } else if (streq(key, "stdout-fd")) { | |
3022 | int fd; | |
3023 | ||
3024 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
3025 | log_unit_debug(u, "Failed to parse stdout-fd value: %s", value); | |
3026 | else { | |
3027 | asynchronous_close(s->stdout_fd); | |
3028 | s->stdout_fd = fdset_remove(fds, fd); | |
1e22b5cd | 3029 | s->exec_context.stdio_as_fds = true; |
a34ceba6 LP |
3030 | } |
3031 | } else if (streq(key, "stderr-fd")) { | |
3032 | int fd; | |
3033 | ||
3034 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
3035 | log_unit_debug(u, "Failed to parse stderr-fd value: %s", value); | |
3036 | else { | |
3037 | asynchronous_close(s->stderr_fd); | |
3038 | s->stderr_fd = fdset_remove(fds, fd); | |
1e22b5cd | 3039 | s->exec_context.stdio_as_fds = true; |
a34ceba6 | 3040 | } |
5686391b LP |
3041 | } else if (streq(key, "exec-fd")) { |
3042 | int fd; | |
3043 | ||
3044 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
3045 | log_unit_debug(u, "Failed to parse exec-fd value: %s", value); | |
3046 | else { | |
5dcadb4c | 3047 | s->exec_fd_event_source = sd_event_source_disable_unref(s->exec_fd_event_source); |
5686391b LP |
3048 | |
3049 | fd = fdset_remove(fds, fd); | |
3050 | if (service_allocate_exec_fd_event_source(s, fd, &s->exec_fd_event_source) < 0) | |
3051 | safe_close(fd); | |
3052 | } | |
2787d83c | 3053 | } else if (streq(key, "watchdog-override-usec")) { |
d68c645b | 3054 | if (deserialize_usec(value, &s->watchdog_override_usec) < 0) |
2787d83c | 3055 | log_unit_debug(u, "Failed to parse watchdog_override_usec value: %s", value); |
d68c645b | 3056 | else |
2787d83c | 3057 | s->watchdog_override_enable = true; |
d68c645b | 3058 | |
aa8c4bbf LP |
3059 | } else if (streq(key, "watchdog-original-usec")) { |
3060 | if (deserialize_usec(value, &s->watchdog_original_usec) < 0) | |
3061 | log_unit_debug(u, "Failed to parse watchdog_original_usec value: %s", value); | |
3062 | ||
e266c068 MS |
3063 | } else if (STR_IN_SET(key, "main-command", "control-command")) { |
3064 | r = service_deserialize_exec_command(u, key, value); | |
3065 | if (r < 0) | |
3066 | log_unit_debug_errno(u, r, "Failed to parse serialized command \"%s\": %m", value); | |
7a0019d3 LP |
3067 | |
3068 | } else if (streq(key, "n-restarts")) { | |
3069 | r = safe_atou(value, &s->n_restarts); | |
3070 | if (r < 0) | |
3071 | log_unit_debug_errno(u, r, "Failed to parse serialized restart counter '%s': %m", value); | |
3072 | ||
3073 | } else if (streq(key, "flush-n-restarts")) { | |
3074 | r = parse_boolean(value); | |
3075 | if (r < 0) | |
3076 | log_unit_debug_errno(u, r, "Failed to parse serialized flush restart counter setting '%s': %m", value); | |
3077 | else | |
3078 | s->flush_n_restarts = r; | |
c17ec25e | 3079 | } else |
f2341e0a | 3080 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
3081 | |
3082 | return 0; | |
3083 | } | |
3084 | ||
44a6b1b6 | 3085 | _pure_ static UnitActiveState service_active_state(Unit *u) { |
e056b01d LP |
3086 | const UnitActiveState *table; |
3087 | ||
87f0e418 | 3088 | assert(u); |
5cb5a6ff | 3089 | |
e056b01d LP |
3090 | table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
3091 | ||
3092 | return table[SERVICE(u)->state]; | |
034c6ed7 LP |
3093 | } |
3094 | ||
10a94420 LP |
3095 | static const char *service_sub_state_to_string(Unit *u) { |
3096 | assert(u); | |
3097 | ||
3098 | return service_state_to_string(SERVICE(u)->state); | |
3099 | } | |
3100 | ||
f2f725e5 | 3101 | static bool service_may_gc(Unit *u) { |
701cc384 LP |
3102 | Service *s = SERVICE(u); |
3103 | ||
3104 | assert(s); | |
3105 | ||
e98b2fbb | 3106 | /* Never clean up services that still have a process around, even if the service is formally dead. Note that |
f2f725e5 | 3107 | * unit_may_gc() already checked our cgroup for us, we just check our two additional PIDs, too, in case they |
e98b2fbb LP |
3108 | * have moved outside of the cgroup. */ |
3109 | ||
3110 | if (main_pid_good(s) > 0 || | |
6d55002a | 3111 | control_pid_good(s) > 0) |
f2f725e5 | 3112 | return false; |
6d55002a | 3113 | |
f2f725e5 | 3114 | return true; |
6d55002a LP |
3115 | } |
3116 | ||
3a111838 MS |
3117 | static int service_retry_pid_file(Service *s) { |
3118 | int r; | |
3119 | ||
3120 | assert(s->pid_file); | |
3742095b | 3121 | assert(IN_SET(s->state, SERVICE_START, SERVICE_START_POST)); |
3a111838 MS |
3122 | |
3123 | r = service_load_pid_file(s, false); | |
3124 | if (r < 0) | |
3125 | return r; | |
3126 | ||
3127 | service_unwatch_pid_file(s); | |
3128 | ||
f42806df | 3129 | service_enter_running(s, SERVICE_SUCCESS); |
3a111838 MS |
3130 | return 0; |
3131 | } | |
3132 | ||
3133 | static int service_watch_pid_file(Service *s) { | |
3134 | int r; | |
3135 | ||
f2341e0a | 3136 | log_unit_debug(UNIT(s), "Setting watch for PID file %s", s->pid_file_pathspec->path); |
8bb2d17d | 3137 | |
5686391b | 3138 | r = path_spec_watch(s->pid_file_pathspec, service_dispatch_inotify_io); |
3a111838 MS |
3139 | if (r < 0) |
3140 | goto fail; | |
3141 | ||
3142 | /* the pidfile might have appeared just before we set the watch */ | |
f2341e0a | 3143 | log_unit_debug(UNIT(s), "Trying to read PID file %s in case it changed", s->pid_file_pathspec->path); |
3a111838 MS |
3144 | service_retry_pid_file(s); |
3145 | ||
3146 | return 0; | |
3147 | fail: | |
f2341e0a | 3148 | log_unit_error_errno(UNIT(s), r, "Failed to set a watch for PID file %s: %m", s->pid_file_pathspec->path); |
3a111838 MS |
3149 | service_unwatch_pid_file(s); |
3150 | return r; | |
3151 | } | |
3152 | ||
3153 | static int service_demand_pid_file(Service *s) { | |
3154 | PathSpec *ps; | |
3155 | ||
3156 | assert(s->pid_file); | |
3157 | assert(!s->pid_file_pathspec); | |
3158 | ||
3159 | ps = new0(PathSpec, 1); | |
3160 | if (!ps) | |
3161 | return -ENOMEM; | |
3162 | ||
718db961 | 3163 | ps->unit = UNIT(s); |
3a111838 MS |
3164 | ps->path = strdup(s->pid_file); |
3165 | if (!ps->path) { | |
3166 | free(ps); | |
3167 | return -ENOMEM; | |
3168 | } | |
3169 | ||
4ff361cc | 3170 | path_simplify(ps->path); |
3a111838 MS |
3171 | |
3172 | /* PATH_CHANGED would not be enough. There are daemons (sendmail) that | |
3173 | * keep their PID file open all the time. */ | |
3174 | ps->type = PATH_MODIFIED; | |
3175 | ps->inotify_fd = -1; | |
3176 | ||
3177 | s->pid_file_pathspec = ps; | |
3178 | ||
3179 | return service_watch_pid_file(s); | |
3180 | } | |
3181 | ||
5686391b | 3182 | static int service_dispatch_inotify_io(sd_event_source *source, int fd, uint32_t events, void *userdata) { |
e14c2802 LP |
3183 | PathSpec *p = userdata; |
3184 | Service *s; | |
3185 | ||
3186 | assert(p); | |
3187 | ||
3188 | s = SERVICE(p->unit); | |
3a111838 MS |
3189 | |
3190 | assert(s); | |
3191 | assert(fd >= 0); | |
3742095b | 3192 | assert(IN_SET(s->state, SERVICE_START, SERVICE_START_POST)); |
3a111838 | 3193 | assert(s->pid_file_pathspec); |
57020a3a | 3194 | assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd)); |
3a111838 | 3195 | |
f2341e0a | 3196 | log_unit_debug(UNIT(s), "inotify event"); |
3a111838 | 3197 | |
e14c2802 | 3198 | if (path_spec_fd_event(p, events) < 0) |
3a111838 MS |
3199 | goto fail; |
3200 | ||
3201 | if (service_retry_pid_file(s) == 0) | |
718db961 | 3202 | return 0; |
3a111838 MS |
3203 | |
3204 | if (service_watch_pid_file(s) < 0) | |
3205 | goto fail; | |
3206 | ||
718db961 LP |
3207 | return 0; |
3208 | ||
3a111838 MS |
3209 | fail: |
3210 | service_unwatch_pid_file(s); | |
f42806df | 3211 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
718db961 | 3212 | return 0; |
3a111838 MS |
3213 | } |
3214 | ||
5686391b LP |
3215 | static int service_dispatch_exec_io(sd_event_source *source, int fd, uint32_t events, void *userdata) { |
3216 | Service *s = SERVICE(userdata); | |
3217 | ||
3218 | assert(s); | |
3219 | ||
3220 | log_unit_debug(UNIT(s), "got exec-fd event"); | |
3221 | ||
3222 | /* If Type=exec is set, we'll consider a service started successfully the instant we invoked execve() | |
3223 | * successfully for it. We implement this through a pipe() towards the child, which the kernel automatically | |
3224 | * closes for us due to O_CLOEXEC on execve() in the child, which then triggers EOF on the pipe in the | |
3225 | * parent. We need to be careful however, as there are other reasons that we might cause the child's side of | |
3226 | * the pipe to be closed (for example, a simple exit()). To deal with that we'll ignore EOFs on the pipe unless | |
3227 | * the child signalled us first that it is about to call the execve(). It does so by sending us a simple | |
3228 | * non-zero byte via the pipe. We also provide the child with a way to inform us in case execve() failed: if it | |
3229 | * sends a zero byte we'll ignore POLLHUP on the fd again. */ | |
3230 | ||
3231 | for (;;) { | |
3232 | uint8_t x; | |
3233 | ssize_t n; | |
3234 | ||
3235 | n = read(fd, &x, sizeof(x)); | |
3236 | if (n < 0) { | |
3237 | if (errno == EAGAIN) /* O_NONBLOCK in effect → everything queued has now been processed. */ | |
3238 | return 0; | |
3239 | ||
3240 | return log_unit_error_errno(UNIT(s), errno, "Failed to read from exec_fd: %m"); | |
3241 | } | |
3242 | if (n == 0) { /* EOF → the event we are waiting for */ | |
3243 | ||
5dcadb4c | 3244 | s->exec_fd_event_source = sd_event_source_disable_unref(s->exec_fd_event_source); |
5686391b LP |
3245 | |
3246 | if (s->exec_fd_hot) { /* Did the child tell us to expect EOF now? */ | |
3247 | log_unit_debug(UNIT(s), "Got EOF on exec-fd"); | |
3248 | ||
3249 | s->exec_fd_hot = false; | |
3250 | ||
3251 | /* Nice! This is what we have been waiting for. Transition to next state. */ | |
3252 | if (s->type == SERVICE_EXEC && s->state == SERVICE_START) | |
3253 | service_enter_start_post(s); | |
3254 | } else | |
3255 | log_unit_debug(UNIT(s), "Got EOF on exec-fd while it was disabled, ignoring."); | |
3256 | ||
3257 | return 0; | |
3258 | } | |
3259 | ||
3260 | /* A byte was read → this turns on/off the exec fd logic */ | |
3261 | assert(n == sizeof(x)); | |
3262 | s->exec_fd_hot = x; | |
3263 | } | |
3264 | ||
3265 | return 0; | |
3266 | } | |
3267 | ||
a911bb9a LP |
3268 | static void service_notify_cgroup_empty_event(Unit *u) { |
3269 | Service *s = SERVICE(u); | |
3270 | ||
3271 | assert(u); | |
3272 | ||
a5b5aece | 3273 | log_unit_debug(u, "Control group is empty."); |
a911bb9a LP |
3274 | |
3275 | switch (s->state) { | |
3276 | ||
3277 | /* Waiting for SIGCHLD is usually more interesting, | |
3278 | * because it includes return codes/signals. Which is | |
3279 | * why we ignore the cgroup events for most cases, | |
3280 | * except when we don't know pid which to expect the | |
3281 | * SIGCHLD for. */ | |
3282 | ||
3283 | case SERVICE_START: | |
3c751b1b LP |
3284 | if (s->type == SERVICE_NOTIFY && |
3285 | main_pid_good(s) == 0 && | |
3286 | control_pid_good(s) == 0) { | |
3d474ef7 | 3287 | /* No chance of getting a ready notification anymore */ |
c3fda31d | 3288 | service_enter_stop_post(s, SERVICE_FAILURE_PROTOCOL); |
71e529fc JW |
3289 | break; |
3290 | } | |
3291 | ||
4831981d | 3292 | _fallthrough_; |
71e529fc | 3293 | case SERVICE_START_POST: |
3c751b1b LP |
3294 | if (s->pid_file_pathspec && |
3295 | main_pid_good(s) == 0 && | |
3296 | control_pid_good(s) == 0) { | |
3297 | ||
3d474ef7 | 3298 | /* Give up hoping for the daemon to write its PID file */ |
f2341e0a | 3299 | log_unit_warning(u, "Daemon never wrote its PID file. Failing."); |
8bb2d17d | 3300 | |
a911bb9a LP |
3301 | service_unwatch_pid_file(s); |
3302 | if (s->state == SERVICE_START) | |
c3fda31d | 3303 | service_enter_stop_post(s, SERVICE_FAILURE_PROTOCOL); |
a911bb9a | 3304 | else |
c35755fb | 3305 | service_enter_stop(s, SERVICE_FAILURE_PROTOCOL); |
a911bb9a LP |
3306 | } |
3307 | break; | |
3308 | ||
3309 | case SERVICE_RUNNING: | |
3310 | /* service_enter_running() will figure out what to do */ | |
3311 | service_enter_running(s, SERVICE_SUCCESS); | |
3312 | break; | |
3313 | ||
c87700a1 | 3314 | case SERVICE_STOP_WATCHDOG: |
a911bb9a LP |
3315 | case SERVICE_STOP_SIGTERM: |
3316 | case SERVICE_STOP_SIGKILL: | |
3317 | ||
b13ddbbc | 3318 | if (main_pid_good(s) <= 0 && control_pid_good(s) <= 0) |
a911bb9a LP |
3319 | service_enter_stop_post(s, SERVICE_SUCCESS); |
3320 | ||
3321 | break; | |
3322 | ||
3323 | case SERVICE_STOP_POST: | |
bf760801 | 3324 | case SERVICE_FINAL_WATCHDOG: |
a911bb9a LP |
3325 | case SERVICE_FINAL_SIGTERM: |
3326 | case SERVICE_FINAL_SIGKILL: | |
b13ddbbc | 3327 | if (main_pid_good(s) <= 0 && control_pid_good(s) <= 0) |
a911bb9a LP |
3328 | service_enter_dead(s, SERVICE_SUCCESS, true); |
3329 | ||
3330 | break; | |
3331 | ||
e08dabfe AZ |
3332 | /* If the cgroup empty notification comes when the unit is not active, we must have failed to clean |
3333 | * up the cgroup earlier and should do it now. */ | |
3334 | case SERVICE_DEAD: | |
3335 | case SERVICE_FAILED: | |
3336 | unit_prune_cgroup(u); | |
3337 | break; | |
3338 | ||
a911bb9a LP |
3339 | default: |
3340 | ; | |
3341 | } | |
3342 | } | |
3343 | ||
afcfaa69 LP |
3344 | static void service_notify_cgroup_oom_event(Unit *u) { |
3345 | Service *s = SERVICE(u); | |
3346 | ||
3347 | log_unit_debug(u, "Process of control group was killed by the OOM killer."); | |
3348 | ||
3349 | if (s->oom_policy == OOM_CONTINUE) | |
3350 | return; | |
3351 | ||
3352 | switch (s->state) { | |
3353 | ||
31cd5f63 | 3354 | case SERVICE_CONDITION: |
afcfaa69 LP |
3355 | case SERVICE_START_PRE: |
3356 | case SERVICE_START: | |
3357 | case SERVICE_START_POST: | |
3358 | case SERVICE_STOP: | |
3359 | if (s->oom_policy == OOM_STOP) | |
3360 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_OOM_KILL); | |
3361 | else if (s->oom_policy == OOM_KILL) | |
3362 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_OOM_KILL); | |
3363 | ||
3364 | break; | |
3365 | ||
3366 | case SERVICE_EXITED: | |
3367 | case SERVICE_RUNNING: | |
3368 | if (s->oom_policy == OOM_STOP) | |
3369 | service_enter_stop(s, SERVICE_FAILURE_OOM_KILL); | |
3370 | else if (s->oom_policy == OOM_KILL) | |
3371 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_OOM_KILL); | |
3372 | ||
3373 | break; | |
3374 | ||
3375 | case SERVICE_STOP_WATCHDOG: | |
3376 | case SERVICE_STOP_SIGTERM: | |
3377 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_OOM_KILL); | |
3378 | break; | |
3379 | ||
3380 | case SERVICE_STOP_SIGKILL: | |
3381 | case SERVICE_FINAL_SIGKILL: | |
3382 | if (s->result == SERVICE_SUCCESS) | |
3383 | s->result = SERVICE_FAILURE_OOM_KILL; | |
3384 | break; | |
3385 | ||
3386 | case SERVICE_STOP_POST: | |
3387 | case SERVICE_FINAL_SIGTERM: | |
3388 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_OOM_KILL); | |
3389 | break; | |
3390 | ||
3391 | default: | |
3392 | ; | |
3393 | } | |
3394 | } | |
3395 | ||
87f0e418 | 3396 | static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
5cdabc8d | 3397 | bool notify_dbus = true; |
87f0e418 | 3398 | Service *s = SERVICE(u); |
f42806df | 3399 | ServiceResult f; |
e5123725 | 3400 | ExitClean clean_mode; |
5cb5a6ff LP |
3401 | |
3402 | assert(s); | |
034c6ed7 LP |
3403 | assert(pid >= 0); |
3404 | ||
e5123725 AZ |
3405 | /* Oneshot services and non-SERVICE_EXEC_START commands should not be |
3406 | * considered daemons as they are typically not long running. */ | |
3407 | if (s->type == SERVICE_ONESHOT || (s->control_pid == pid && s->control_command_id != SERVICE_EXEC_START)) | |
3408 | clean_mode = EXIT_CLEAN_COMMAND; | |
3409 | else | |
3410 | clean_mode = EXIT_CLEAN_DAEMON; | |
3411 | ||
3412 | if (is_clean_exit(code, status, clean_mode, &s->success_status)) | |
f42806df LP |
3413 | f = SERVICE_SUCCESS; |
3414 | else if (code == CLD_EXITED) | |
3415 | f = SERVICE_FAILURE_EXIT_CODE; | |
3416 | else if (code == CLD_KILLED) | |
3417 | f = SERVICE_FAILURE_SIGNAL; | |
3418 | else if (code == CLD_DUMPED) | |
3419 | f = SERVICE_FAILURE_CORE_DUMP; | |
d06dacd0 | 3420 | else |
04499a70 | 3421 | assert_not_reached(); |
034c6ed7 | 3422 | |
abaf5edd | 3423 | if (s->main_pid == pid) { |
13bb1ffb ZJS |
3424 | /* Clean up the exec_fd event source. We want to do this here, not later in |
3425 | * service_set_state(), because service_enter_stop_post() calls service_spawn(). | |
3426 | * The source owns its end of the pipe, so this will close that too. */ | |
3427 | s->exec_fd_event_source = sd_event_source_disable_unref(s->exec_fd_event_source); | |
3428 | ||
db01f8b3 MS |
3429 | /* Forking services may occasionally move to a new PID. |
3430 | * As long as they update the PID file before exiting the old | |
3431 | * PID, they're fine. */ | |
db256aab | 3432 | if (service_load_pid_file(s, false) > 0) |
db01f8b3 | 3433 | return; |
034c6ed7 | 3434 | |
034c6ed7 | 3435 | s->main_pid = 0; |
6ea832a2 | 3436 | exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status); |
034c6ed7 | 3437 | |
867b3b7d | 3438 | if (s->main_command) { |
fbeefb45 LP |
3439 | /* If this is not a forking service than the |
3440 | * main process got started and hence we copy | |
3441 | * the exit status so that it is recorded both | |
3442 | * as main and as control process exit | |
3443 | * status */ | |
3444 | ||
867b3b7d | 3445 | s->main_command->exec_status = s->main_exec_status; |
b708e7ce | 3446 | |
3ed0cd26 | 3447 | if (s->main_command->flags & EXEC_COMMAND_IGNORE_FAILURE) |
f42806df | 3448 | f = SERVICE_SUCCESS; |
fbeefb45 LP |
3449 | } else if (s->exec_command[SERVICE_EXEC_START]) { |
3450 | ||
3451 | /* If this is a forked process, then we should | |
3452 | * ignore the return value if this was | |
3453 | * configured for the starter process */ | |
3454 | ||
3ed0cd26 | 3455 | if (s->exec_command[SERVICE_EXEC_START]->flags & EXEC_COMMAND_IGNORE_FAILURE) |
fbeefb45 | 3456 | f = SERVICE_SUCCESS; |
034c6ed7 LP |
3457 | } |
3458 | ||
91bbd9b7 | 3459 | unit_log_process_exit( |
5cc2cd1c | 3460 | u, |
abaf5edd | 3461 | "Main process", |
91bbd9b7 | 3462 | service_exec_command_to_string(SERVICE_EXEC_START), |
5cc2cd1c | 3463 | f == SERVICE_SUCCESS, |
91bbd9b7 | 3464 | code, status); |
f42806df | 3465 | |
a0fef983 | 3466 | if (s->result == SERVICE_SUCCESS) |
f42806df | 3467 | s->result = f; |
034c6ed7 | 3468 | |
867b3b7d LP |
3469 | if (s->main_command && |
3470 | s->main_command->command_next && | |
b58aeb70 | 3471 | s->type == SERVICE_ONESHOT && |
f42806df | 3472 | f == SERVICE_SUCCESS) { |
034c6ed7 | 3473 | |
e78695d4 | 3474 | /* There is another command to execute, so let's do that. */ |
034c6ed7 | 3475 | |
f2341e0a | 3476 | log_unit_debug(u, "Running next main command for state %s.", service_state_to_string(s->state)); |
f42806df | 3477 | service_run_next_main(s); |
034c6ed7 | 3478 | |
34e9ba66 LP |
3479 | } else { |
3480 | ||
e78695d4 | 3481 | /* The service exited, so the service is officially gone. */ |
867b3b7d | 3482 | s->main_command = NULL; |
34e9ba66 LP |
3483 | |
3484 | switch (s->state) { | |
3485 | ||
3486 | case SERVICE_START_POST: | |
3487 | case SERVICE_RELOAD: | |
bbe19f68 PM |
3488 | /* If neither main nor control processes are running then |
3489 | * the current state can never exit cleanly, hence immediately | |
3490 | * terminate the service. */ | |
3491 | if (control_pid_good(s) <= 0) | |
3492 | service_enter_stop(s, f); | |
3493 | ||
8170992a | 3494 | /* Otherwise need to wait until the operation is done. */ |
bbe19f68 PM |
3495 | break; |
3496 | ||
34e9ba66 | 3497 | case SERVICE_STOP: |
e78695d4 | 3498 | /* Need to wait until the operation is done. */ |
c4653a4d | 3499 | break; |
7d55e835 | 3500 | |
34e9ba66 LP |
3501 | case SERVICE_START: |
3502 | if (s->type == SERVICE_ONESHOT) { | |
3503 | /* This was our main goal, so let's go on */ | |
f42806df | 3504 | if (f == SERVICE_SUCCESS) |
34e9ba66 LP |
3505 | service_enter_start_post(s); |
3506 | else | |
c3fda31d | 3507 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
34e9ba66 | 3508 | break; |
3d474ef7 JW |
3509 | } else if (s->type == SERVICE_NOTIFY) { |
3510 | /* Only enter running through a notification, so that the | |
3511 | * SERVICE_START state signifies that no ready notification | |
3512 | * has been received */ | |
3513 | if (f != SERVICE_SUCCESS) | |
c3fda31d | 3514 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
df66b93f JW |
3515 | else if (!s->remain_after_exit || s->notify_access == NOTIFY_MAIN) |
3516 | /* The service has never been and will never be active */ | |
c3fda31d | 3517 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_PROTOCOL); |
3d474ef7 | 3518 | break; |
34e9ba66 | 3519 | } |
034c6ed7 | 3520 | |
4831981d | 3521 | _fallthrough_; |
34e9ba66 | 3522 | case SERVICE_RUNNING: |
f42806df | 3523 | service_enter_running(s, f); |
34e9ba66 | 3524 | break; |
034c6ed7 | 3525 | |
c87700a1 | 3526 | case SERVICE_STOP_WATCHDOG: |
34e9ba66 LP |
3527 | case SERVICE_STOP_SIGTERM: |
3528 | case SERVICE_STOP_SIGKILL: | |
5cb5a6ff | 3529 | |
b13ddbbc | 3530 | if (control_pid_good(s) <= 0) |
f42806df | 3531 | service_enter_stop_post(s, f); |
5cb5a6ff | 3532 | |
34e9ba66 LP |
3533 | /* If there is still a control process, wait for that first */ |
3534 | break; | |
3535 | ||
bf108e55 | 3536 | case SERVICE_STOP_POST: |
c1566ef0 AZ |
3537 | |
3538 | if (control_pid_good(s) <= 0) | |
3539 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, f); | |
3540 | ||
3541 | break; | |
3542 | ||
bf760801 | 3543 | case SERVICE_FINAL_WATCHDOG: |
bf108e55 LP |
3544 | case SERVICE_FINAL_SIGTERM: |
3545 | case SERVICE_FINAL_SIGKILL: | |
3546 | ||
b13ddbbc | 3547 | if (control_pid_good(s) <= 0) |
bf108e55 LP |
3548 | service_enter_dead(s, f, true); |
3549 | break; | |
3550 | ||
34e9ba66 | 3551 | default: |
04499a70 | 3552 | assert_not_reached(); |
34e9ba66 | 3553 | } |
034c6ed7 | 3554 | } |
5cb5a6ff | 3555 | |
034c6ed7 | 3556 | } else if (s->control_pid == pid) { |
58441bc1 ZJS |
3557 | const char *kind; |
3558 | bool success; | |
3559 | ||
34e9ba66 LP |
3560 | s->control_pid = 0; |
3561 | ||
b708e7ce | 3562 | if (s->control_command) { |
8bb2d17d | 3563 | exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status); |
a16e1123 | 3564 | |
3ed0cd26 | 3565 | if (s->control_command->flags & EXEC_COMMAND_IGNORE_FAILURE) |
f42806df | 3566 | f = SERVICE_SUCCESS; |
b708e7ce LP |
3567 | } |
3568 | ||
42e6f549 AZ |
3569 | /* ExecCondition= calls that exit with (0, 254] should invoke skip-like behavior instead of failing */ |
3570 | if (s->state == SERVICE_CONDITION) { | |
3571 | if (f == SERVICE_FAILURE_EXIT_CODE && status < 255) { | |
3572 | UNIT(s)->condition_result = false; | |
3573 | f = SERVICE_SKIP_CONDITION; | |
58441bc1 ZJS |
3574 | success = true; |
3575 | } else if (f == SERVICE_SUCCESS) { | |
42e6f549 | 3576 | UNIT(s)->condition_result = true; |
58441bc1 ZJS |
3577 | success = true; |
3578 | } else | |
3579 | success = false; | |
3580 | ||
3581 | kind = "Condition check process"; | |
3582 | } else { | |
3583 | kind = "Control process"; | |
3584 | success = f == SERVICE_SUCCESS; | |
42e6f549 AZ |
3585 | } |
3586 | ||
91bbd9b7 | 3587 | unit_log_process_exit( |
5cc2cd1c | 3588 | u, |
58441bc1 | 3589 | kind, |
91bbd9b7 | 3590 | service_exec_command_to_string(s->control_command_id), |
58441bc1 | 3591 | success, |
91bbd9b7 | 3592 | code, status); |
f42806df | 3593 | |
d611cfa7 | 3594 | if (s->state != SERVICE_RELOAD && s->result == SERVICE_SUCCESS) |
f42806df | 3595 | s->result = f; |
034c6ed7 | 3596 | |
34e9ba66 LP |
3597 | if (s->control_command && |
3598 | s->control_command->command_next && | |
f42806df | 3599 | f == SERVICE_SUCCESS) { |
034c6ed7 LP |
3600 | |
3601 | /* There is another command to * | |
3602 | * execute, so let's do that. */ | |
3603 | ||
f2341e0a | 3604 | log_unit_debug(u, "Running next control command for state %s.", service_state_to_string(s->state)); |
f42806df | 3605 | service_run_next_control(s); |
034c6ed7 | 3606 | |
80876c20 | 3607 | } else { |
034c6ed7 LP |
3608 | /* No further commands for this step, so let's |
3609 | * figure out what to do next */ | |
3610 | ||
a16e1123 LP |
3611 | s->control_command = NULL; |
3612 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
3613 | ||
f2341e0a | 3614 | log_unit_debug(u, "Got final SIGCHLD for state %s.", service_state_to_string(s->state)); |
bd982a8b | 3615 | |
034c6ed7 LP |
3616 | switch (s->state) { |
3617 | ||
31cd5f63 AZ |
3618 | case SERVICE_CONDITION: |
3619 | if (f == SERVICE_SUCCESS) | |
3620 | service_enter_start_pre(s); | |
3621 | else | |
3622 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); | |
3623 | break; | |
3624 | ||
034c6ed7 | 3625 | case SERVICE_START_PRE: |
f42806df | 3626 | if (f == SERVICE_SUCCESS) |
034c6ed7 LP |
3627 | service_enter_start(s); |
3628 | else | |
c3fda31d | 3629 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
034c6ed7 LP |
3630 | break; |
3631 | ||
3632 | case SERVICE_START: | |
bfba3256 LP |
3633 | if (s->type != SERVICE_FORKING) |
3634 | /* Maybe spurious event due to a reload that changed the type? */ | |
3635 | break; | |
034c6ed7 | 3636 | |
f42806df | 3637 | if (f != SERVICE_SUCCESS) { |
c3fda31d | 3638 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
3a111838 MS |
3639 | break; |
3640 | } | |
034c6ed7 | 3641 | |
3a111838 | 3642 | if (s->pid_file) { |
f42806df LP |
3643 | bool has_start_post; |
3644 | int r; | |
3645 | ||
3a111838 MS |
3646 | /* Let's try to load the pid file here if we can. |
3647 | * The PID file might actually be created by a START_POST | |
3648 | * script. In that case don't worry if the loading fails. */ | |
f42806df | 3649 | |
5d904a6a | 3650 | has_start_post = s->exec_command[SERVICE_EXEC_START_POST]; |
f42806df | 3651 | r = service_load_pid_file(s, !has_start_post); |
3a111838 MS |
3652 | if (!has_start_post && r < 0) { |
3653 | r = service_demand_pid_file(s); | |
b13ddbbc | 3654 | if (r < 0 || cgroup_good(s) == 0) |
c3fda31d | 3655 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_PROTOCOL); |
3a111838 MS |
3656 | break; |
3657 | } | |
034c6ed7 | 3658 | } else |
783e05d6 | 3659 | service_search_main_pid(s); |
034c6ed7 | 3660 | |
3a111838 | 3661 | service_enter_start_post(s); |
034c6ed7 LP |
3662 | break; |
3663 | ||
3664 | case SERVICE_START_POST: | |
f42806df | 3665 | if (f != SERVICE_SUCCESS) { |
ce359e98 | 3666 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
2096e009 | 3667 | break; |
034c6ed7 LP |
3668 | } |
3669 | ||
2096e009 | 3670 | if (s->pid_file) { |
f42806df LP |
3671 | int r; |
3672 | ||
3673 | r = service_load_pid_file(s, true); | |
2096e009 MS |
3674 | if (r < 0) { |
3675 | r = service_demand_pid_file(s); | |
b13ddbbc | 3676 | if (r < 0 || cgroup_good(s) == 0) |
c35755fb | 3677 | service_enter_stop(s, SERVICE_FAILURE_PROTOCOL); |
2096e009 MS |
3678 | break; |
3679 | } | |
3680 | } else | |
783e05d6 | 3681 | service_search_main_pid(s); |
2096e009 | 3682 | |
f42806df | 3683 | service_enter_running(s, SERVICE_SUCCESS); |
3185a36b | 3684 | break; |
034c6ed7 LP |
3685 | |
3686 | case SERVICE_RELOAD: | |
7236ce6e ZJS |
3687 | if (f == SERVICE_SUCCESS) |
3688 | if (service_load_pid_file(s, true) < 0) | |
3689 | service_search_main_pid(s); | |
3185a36b | 3690 | |
f42806df LP |
3691 | s->reload_result = f; |
3692 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
3693 | break; |
3694 | ||
3695 | case SERVICE_STOP: | |
f42806df | 3696 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
034c6ed7 LP |
3697 | break; |
3698 | ||
c87700a1 | 3699 | case SERVICE_STOP_WATCHDOG: |
034c6ed7 LP |
3700 | case SERVICE_STOP_SIGTERM: |
3701 | case SERVICE_STOP_SIGKILL: | |
3702 | if (main_pid_good(s) <= 0) | |
f42806df | 3703 | service_enter_stop_post(s, f); |
034c6ed7 | 3704 | |
846a07b5 | 3705 | /* If there is still a service process around, wait until |
034c6ed7 LP |
3706 | * that one quit, too */ |
3707 | break; | |
3708 | ||
3709 | case SERVICE_STOP_POST: | |
c1566ef0 AZ |
3710 | if (main_pid_good(s) <= 0) |
3711 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, f); | |
3712 | break; | |
3713 | ||
bf760801 | 3714 | case SERVICE_FINAL_WATCHDOG: |
034c6ed7 LP |
3715 | case SERVICE_FINAL_SIGTERM: |
3716 | case SERVICE_FINAL_SIGKILL: | |
bf108e55 LP |
3717 | if (main_pid_good(s) <= 0) |
3718 | service_enter_dead(s, f, true); | |
034c6ed7 LP |
3719 | break; |
3720 | ||
4c2f5842 LP |
3721 | case SERVICE_CLEANING: |
3722 | ||
3723 | if (s->clean_result == SERVICE_SUCCESS) | |
3724 | s->clean_result = f; | |
3725 | ||
3726 | service_enter_dead(s, SERVICE_SUCCESS, false); | |
3727 | break; | |
3728 | ||
034c6ed7 | 3729 | default: |
04499a70 | 3730 | assert_not_reached(); |
034c6ed7 LP |
3731 | } |
3732 | } | |
5cdabc8d LP |
3733 | } else /* Neither control nor main PID? If so, don't notify about anything */ |
3734 | notify_dbus = false; | |
c4e2ceae LP |
3735 | |
3736 | /* Notify clients about changed exit status */ | |
5cdabc8d LP |
3737 | if (notify_dbus) |
3738 | unit_add_to_dbus_queue(u); | |
a911bb9a | 3739 | |
846a07b5 FB |
3740 | /* We watch the main/control process otherwise we can't retrieve the unit they |
3741 | * belong to with cgroupv1. But if they are not our direct child, we won't get a | |
3742 | * SIGCHLD for them. Therefore we need to look for others to watch so we can | |
3743 | * detect when the cgroup becomes empty. Note that the control process is always | |
3744 | * our child so it's pointless to watch all other processes. */ | |
3745 | if (!control_pid_good(s)) | |
3746 | if (!s->main_pid_known || s->main_pid_alien) | |
3747 | (void) unit_enqueue_rewatch_pids(u); | |
034c6ed7 LP |
3748 | } |
3749 | ||
718db961 LP |
3750 | static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
3751 | Service *s = SERVICE(userdata); | |
034c6ed7 LP |
3752 | |
3753 | assert(s); | |
718db961 | 3754 | assert(source == s->timer_event_source); |
034c6ed7 LP |
3755 | |
3756 | switch (s->state) { | |
3757 | ||
31cd5f63 | 3758 | case SERVICE_CONDITION: |
034c6ed7 LP |
3759 | case SERVICE_START_PRE: |
3760 | case SERVICE_START: | |
3761 | case SERVICE_START_POST: | |
bf760801 JK |
3762 | switch (s->timeout_start_failure_mode) { |
3763 | ||
3764 | case SERVICE_TIMEOUT_TERMINATE: | |
3765 | log_unit_warning(UNIT(s), "%s operation timed out. Terminating.", service_state_to_string(s->state)); | |
3766 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); | |
3767 | break; | |
3768 | ||
3769 | case SERVICE_TIMEOUT_ABORT: | |
3770 | log_unit_warning(UNIT(s), "%s operation timed out. Aborting.", service_state_to_string(s->state)); | |
3771 | service_enter_signal(s, SERVICE_STOP_WATCHDOG, SERVICE_FAILURE_TIMEOUT); | |
3772 | break; | |
3773 | ||
3774 | case SERVICE_TIMEOUT_KILL: | |
3775 | if (s->kill_context.send_sigkill) { | |
3776 | log_unit_warning(UNIT(s), "%s operation timed out. Killing.", service_state_to_string(s->state)); | |
3777 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); | |
3778 | } else { | |
3779 | log_unit_warning(UNIT(s), "%s operation timed out. Skipping SIGKILL.", service_state_to_string(s->state)); | |
3780 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); | |
3781 | } | |
3782 | break; | |
3783 | ||
3784 | default: | |
04499a70 | 3785 | assert_not_reached(); |
bf760801 | 3786 | } |
034c6ed7 LP |
3787 | break; |
3788 | ||
36c16a7c LP |
3789 | case SERVICE_RUNNING: |
3790 | log_unit_warning(UNIT(s), "Service reached runtime time limit. Stopping."); | |
3791 | service_enter_stop(s, SERVICE_FAILURE_TIMEOUT); | |
3792 | break; | |
3793 | ||
e2f3b44c | 3794 | case SERVICE_RELOAD: |
089b64d5 | 3795 | log_unit_warning(UNIT(s), "Reload operation timed out. Killing reload process."); |
e9a4f676 | 3796 | service_kill_control_process(s); |
f42806df LP |
3797 | s->reload_result = SERVICE_FAILURE_TIMEOUT; |
3798 | service_enter_running(s, SERVICE_SUCCESS); | |
e2f3b44c LP |
3799 | break; |
3800 | ||
034c6ed7 | 3801 | case SERVICE_STOP: |
bf760801 JK |
3802 | switch (s->timeout_stop_failure_mode) { |
3803 | ||
3804 | case SERVICE_TIMEOUT_TERMINATE: | |
3805 | log_unit_warning(UNIT(s), "Stopping timed out. Terminating."); | |
3806 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); | |
3807 | break; | |
3808 | ||
3809 | case SERVICE_TIMEOUT_ABORT: | |
3810 | log_unit_warning(UNIT(s), "Stopping timed out. Aborting."); | |
3811 | service_enter_signal(s, SERVICE_STOP_WATCHDOG, SERVICE_FAILURE_TIMEOUT); | |
3812 | break; | |
3813 | ||
3814 | case SERVICE_TIMEOUT_KILL: | |
3815 | if (s->kill_context.send_sigkill) { | |
3816 | log_unit_warning(UNIT(s), "Stopping timed out. Killing."); | |
3817 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); | |
3818 | } else { | |
3819 | log_unit_warning(UNIT(s), "Stopping timed out. Skipping SIGKILL."); | |
3820 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); | |
3821 | } | |
3822 | break; | |
3823 | ||
3824 | default: | |
04499a70 | 3825 | assert_not_reached(); |
bf760801 | 3826 | } |
034c6ed7 LP |
3827 | break; |
3828 | ||
c87700a1 | 3829 | case SERVICE_STOP_WATCHDOG: |
bf760801 JK |
3830 | if (s->kill_context.send_sigkill) { |
3831 | log_unit_warning(UNIT(s), "State 'stop-watchdog' timed out. Killing."); | |
3832 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); | |
3833 | } else { | |
3834 | log_unit_warning(UNIT(s), "State 'stop-watchdog' timed out. Skipping SIGKILL."); | |
3835 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); | |
3836 | } | |
db2cb23b UTL |
3837 | break; |
3838 | ||
034c6ed7 | 3839 | case SERVICE_STOP_SIGTERM: |
bf760801 JK |
3840 | if (s->timeout_stop_failure_mode == SERVICE_TIMEOUT_ABORT) { |
3841 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Aborting."); | |
3842 | service_enter_signal(s, SERVICE_STOP_WATCHDOG, SERVICE_FAILURE_TIMEOUT); | |
3843 | } else if (s->kill_context.send_sigkill) { | |
f2341e0a | 3844 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Killing."); |
f42806df | 3845 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 3846 | } else { |
f2341e0a | 3847 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Skipping SIGKILL."); |
f42806df | 3848 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
ba035df2 LP |
3849 | } |
3850 | ||
034c6ed7 LP |
3851 | break; |
3852 | ||
3853 | case SERVICE_STOP_SIGKILL: | |
35b8ca3a | 3854 | /* Uh, we sent a SIGKILL and it is still not gone? |
034c6ed7 LP |
3855 | * Must be something we cannot kill, so let's just be |
3856 | * weirded out and continue */ | |
3857 | ||
f2341e0a | 3858 | log_unit_warning(UNIT(s), "Processes still around after SIGKILL. Ignoring."); |
f42806df | 3859 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3860 | break; |
3861 | ||
3862 | case SERVICE_STOP_POST: | |
bf760801 JK |
3863 | switch (s->timeout_stop_failure_mode) { |
3864 | ||
3865 | case SERVICE_TIMEOUT_TERMINATE: | |
3866 | log_unit_warning(UNIT(s), "State 'stop-post' timed out. Terminating."); | |
3867 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT); | |
3868 | break; | |
3869 | ||
3870 | case SERVICE_TIMEOUT_ABORT: | |
3871 | log_unit_warning(UNIT(s), "State 'stop-post' timed out. Aborting."); | |
3872 | service_enter_signal(s, SERVICE_FINAL_WATCHDOG, SERVICE_FAILURE_TIMEOUT); | |
3873 | break; | |
3874 | ||
3875 | case SERVICE_TIMEOUT_KILL: | |
3876 | if (s->kill_context.send_sigkill) { | |
3877 | log_unit_warning(UNIT(s), "State 'stop-post' timed out. Killing."); | |
3878 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT); | |
3879 | } else { | |
3880 | log_unit_warning(UNIT(s), "State 'stop-post' timed out. Skipping SIGKILL. Entering failed mode."); | |
3881 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false); | |
3882 | } | |
3883 | break; | |
3884 | ||
3885 | default: | |
04499a70 | 3886 | assert_not_reached(); |
bf760801 | 3887 | } |
034c6ed7 LP |
3888 | break; |
3889 | ||
bf760801 | 3890 | case SERVICE_FINAL_WATCHDOG: |
4819ff03 | 3891 | if (s->kill_context.send_sigkill) { |
bf760801 | 3892 | log_unit_warning(UNIT(s), "State 'final-watchdog' timed out. Killing."); |
f42806df | 3893 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 3894 | } else { |
bf760801 JK |
3895 | log_unit_warning(UNIT(s), "State 'final-watchdog' timed out. Skipping SIGKILL. Entering failed mode."); |
3896 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false); | |
3897 | } | |
3898 | break; | |
3899 | ||
3900 | case SERVICE_FINAL_SIGTERM: | |
3901 | if (s->timeout_stop_failure_mode == SERVICE_TIMEOUT_ABORT) { | |
3902 | log_unit_warning(UNIT(s), "State 'final-sigterm' timed out. Aborting."); | |
3903 | service_enter_signal(s, SERVICE_FINAL_WATCHDOG, SERVICE_FAILURE_TIMEOUT); | |
3904 | } else if (s->kill_context.send_sigkill) { | |
3905 | log_unit_warning(UNIT(s), "State 'final-sigterm' timed out. Killing."); | |
3906 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT); | |
3907 | } else { | |
3908 | log_unit_warning(UNIT(s), "State 'final-sigterm' timed out. Skipping SIGKILL. Entering failed mode."); | |
f42806df | 3909 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false); |
ba035df2 LP |
3910 | } |
3911 | ||
034c6ed7 LP |
3912 | break; |
3913 | ||
3914 | case SERVICE_FINAL_SIGKILL: | |
f2341e0a | 3915 | log_unit_warning(UNIT(s), "Processes still around after final SIGKILL. Entering failed mode."); |
f42806df | 3916 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true); |
034c6ed7 LP |
3917 | break; |
3918 | ||
3919 | case SERVICE_AUTO_RESTART: | |
5291f26d | 3920 | if (s->restart_usec > 0) |
868f7d36 ZJS |
3921 | log_unit_debug(UNIT(s), |
3922 | "Service RestartSec=%s expired, scheduling restart.", | |
5291f26d ZJS |
3923 | FORMAT_TIMESPAN(s->restart_usec, USEC_PER_SEC)); |
3924 | else | |
868f7d36 ZJS |
3925 | log_unit_debug(UNIT(s), |
3926 | "Service has no hold-off time (RestartSec=0), scheduling restart."); | |
5ce6e7f5 | 3927 | |
034c6ed7 LP |
3928 | service_enter_restart(s); |
3929 | break; | |
3930 | ||
4c2f5842 LP |
3931 | case SERVICE_CLEANING: |
3932 | log_unit_warning(UNIT(s), "Cleaning timed out. killing."); | |
3933 | ||
3934 | if (s->clean_result == SERVICE_SUCCESS) | |
3935 | s->clean_result = SERVICE_FAILURE_TIMEOUT; | |
3936 | ||
3937 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, 0); | |
3938 | break; | |
3939 | ||
034c6ed7 | 3940 | default: |
04499a70 | 3941 | assert_not_reached(); |
034c6ed7 | 3942 | } |
718db961 LP |
3943 | |
3944 | return 0; | |
3945 | } | |
3946 | ||
3947 | static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata) { | |
3948 | Service *s = SERVICE(userdata); | |
2787d83c | 3949 | usec_t watchdog_usec; |
718db961 LP |
3950 | |
3951 | assert(s); | |
3952 | assert(source == s->watchdog_event_source); | |
3953 | ||
2787d83c M |
3954 | watchdog_usec = service_get_watchdog_usec(s); |
3955 | ||
2a12e32e JK |
3956 | if (UNIT(s)->manager->service_watchdogs) { |
3957 | log_unit_error(UNIT(s), "Watchdog timeout (limit %s)!", | |
5291f26d | 3958 | FORMAT_TIMESPAN(watchdog_usec, 1)); |
8bb2d17d | 3959 | |
c87700a1 | 3960 | service_enter_signal(s, SERVICE_STOP_WATCHDOG, SERVICE_FAILURE_WATCHDOG); |
2a12e32e JK |
3961 | } else |
3962 | log_unit_warning(UNIT(s), "Watchdog disabled! Ignoring watchdog timeout (limit %s)!", | |
5291f26d | 3963 | FORMAT_TIMESPAN(watchdog_usec, 1)); |
842129f5 | 3964 | |
718db961 | 3965 | return 0; |
5cb5a6ff LP |
3966 | } |
3967 | ||
fcee2755 | 3968 | static bool service_notify_message_authorized(Service *s, pid_t pid, FDSet *fds) { |
e3285237 | 3969 | assert(s); |
8c47c732 | 3970 | |
c952c6ec | 3971 | if (s->notify_access == NOTIFY_NONE) { |
e3285237 LP |
3972 | log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception is disabled.", pid); |
3973 | return false; | |
3974 | } | |
3975 | ||
3976 | if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) { | |
336c6e46 | 3977 | if (s->main_pid != 0) |
e3285237 | 3978 | 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 | 3979 | else |
e3285237 LP |
3980 | 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); |
3981 | ||
3982 | return false; | |
3983 | } | |
3984 | ||
3985 | if (s->notify_access == NOTIFY_EXEC && pid != s->main_pid && pid != s->control_pid) { | |
6375bd20 | 3986 | if (s->main_pid != 0 && s->control_pid != 0) |
e3285237 | 3987 | 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 |
3988 | pid, s->main_pid, s->control_pid); |
3989 | else if (s->main_pid != 0) | |
e3285237 | 3990 | 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 | 3991 | else if (s->control_pid != 0) |
e3285237 | 3992 | 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 | 3993 | else |
e3285237 LP |
3994 | 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); |
3995 | ||
3996 | return false; | |
9711848f LP |
3997 | } |
3998 | ||
e3285237 LP |
3999 | return true; |
4000 | } | |
4001 | ||
99b43caf JK |
4002 | static void service_force_watchdog(Service *s) { |
4003 | if (!UNIT(s)->manager->service_watchdogs) | |
4004 | return; | |
4005 | ||
4006 | log_unit_error(UNIT(s), "Watchdog request (last status: %s)!", | |
4007 | s->status_text ? s->status_text : "<unset>"); | |
4008 | ||
4009 | service_enter_signal(s, SERVICE_STOP_WATCHDOG, SERVICE_FAILURE_WATCHDOG); | |
4010 | } | |
4011 | ||
db256aab LP |
4012 | static void service_notify_message( |
4013 | Unit *u, | |
4014 | const struct ucred *ucred, | |
fcee2755 | 4015 | char * const *tags, |
db256aab LP |
4016 | FDSet *fds) { |
4017 | ||
e3285237 LP |
4018 | Service *s = SERVICE(u); |
4019 | bool notify_dbus = false; | |
4020 | const char *e; | |
fcee2755 | 4021 | char * const *i; |
db256aab | 4022 | int r; |
e3285237 LP |
4023 | |
4024 | assert(u); | |
db256aab | 4025 | assert(ucred); |
e3285237 | 4026 | |
fcee2755 | 4027 | if (!service_notify_message_authorized(SERVICE(u), ucred->pid, fds)) |
e3285237 LP |
4028 | return; |
4029 | ||
f1d34068 | 4030 | if (DEBUG_LOGGING) { |
9711848f LP |
4031 | _cleanup_free_ char *cc = NULL; |
4032 | ||
4033 | cc = strv_join(tags, ", "); | |
db256aab | 4034 | log_unit_debug(u, "Got notification message from PID "PID_FMT" (%s)", ucred->pid, isempty(cc) ? "n/a" : cc); |
9711848f | 4035 | } |
c952c6ec | 4036 | |
8c47c732 | 4037 | /* Interpret MAINPID= */ |
28849dba | 4038 | e = strv_find_startswith(tags, "MAINPID="); |
5e56b378 | 4039 | if (e && IN_SET(s->state, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) { |
db256aab LP |
4040 | pid_t new_main_pid; |
4041 | ||
4042 | if (parse_pid(e, &new_main_pid) < 0) | |
4043 | log_unit_warning(u, "Failed to parse MAINPID= field in notification message, ignoring: %s", e); | |
4044 | else if (!s->main_pid_known || new_main_pid != s->main_pid) { | |
4045 | ||
4046 | r = service_is_suitable_main_pid(s, new_main_pid, LOG_WARNING); | |
4047 | if (r == 0) { | |
5238e957 | 4048 | /* The new main PID is a bit suspicious, which is OK if the sender is privileged. */ |
db256aab LP |
4049 | |
4050 | if (ucred->uid == 0) { | |
4051 | 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); | |
4052 | r = 1; | |
4053 | } else | |
4054 | log_unit_debug(u, "New main PID "PID_FMT" does not belong to service, refusing.", new_main_pid); | |
4055 | } | |
4056 | if (r > 0) { | |
4057 | service_set_main_pid(s, new_main_pid); | |
cdc2af3e | 4058 | |
f75f613d | 4059 | r = unit_watch_pid(UNIT(s), new_main_pid, false); |
cdc2af3e LP |
4060 | if (r < 0) |
4061 | log_unit_warning_errno(UNIT(s), r, "Failed to watch new main PID "PID_FMT" for service: %m", new_main_pid); | |
4062 | ||
db256aab LP |
4063 | notify_dbus = true; |
4064 | } | |
8c47c732 LP |
4065 | } |
4066 | } | |
4067 | ||
cc2b7b11 LP |
4068 | /* Interpret READY=/STOPPING=/RELOADING=. Last one wins. */ |
4069 | STRV_FOREACH_BACKWARDS(i, tags) { | |
308d72dc | 4070 | |
cc2b7b11 LP |
4071 | if (streq(*i, "READY=1")) { |
4072 | s->notify_state = NOTIFY_READY; | |
308d72dc | 4073 | |
cc2b7b11 LP |
4074 | /* Type=notify services inform us about completed |
4075 | * initialization with READY=1 */ | |
4076 | if (s->type == SERVICE_NOTIFY && s->state == SERVICE_START) | |
4077 | service_enter_start_post(s); | |
308d72dc | 4078 | |
cc2b7b11 LP |
4079 | /* Sending READY=1 while we are reloading informs us |
4080 | * that the reloading is complete */ | |
4081 | if (s->state == SERVICE_RELOAD && s->control_pid == 0) | |
4082 | service_enter_running(s, SERVICE_SUCCESS); | |
308d72dc | 4083 | |
cc2b7b11 LP |
4084 | notify_dbus = true; |
4085 | break; | |
308d72dc | 4086 | |
cc2b7b11 LP |
4087 | } else if (streq(*i, "RELOADING=1")) { |
4088 | s->notify_state = NOTIFY_RELOADING; | |
308d72dc | 4089 | |
cc2b7b11 LP |
4090 | if (s->state == SERVICE_RUNNING) |
4091 | service_enter_reload_by_notify(s); | |
308d72dc | 4092 | |
cc2b7b11 LP |
4093 | notify_dbus = true; |
4094 | break; | |
308d72dc | 4095 | |
cc2b7b11 LP |
4096 | } else if (streq(*i, "STOPPING=1")) { |
4097 | s->notify_state = NOTIFY_STOPPING; | |
308d72dc | 4098 | |
cc2b7b11 LP |
4099 | if (s->state == SERVICE_RUNNING) |
4100 | service_enter_stop_by_notify(s); | |
308d72dc | 4101 | |
cc2b7b11 LP |
4102 | notify_dbus = true; |
4103 | break; | |
4104 | } | |
8c47c732 LP |
4105 | } |
4106 | ||
4107 | /* Interpret STATUS= */ | |
28849dba | 4108 | e = strv_find_startswith(tags, "STATUS="); |
7f110ff9 | 4109 | if (e) { |
28849dba | 4110 | _cleanup_free_ char *t = NULL; |
8c47c732 | 4111 | |
28849dba | 4112 | if (!isempty(e)) { |
3eac1bca LP |
4113 | /* Note that this size limit check is mostly paranoia: since the datagram size we are willing |
4114 | * to process is already limited to NOTIFY_BUFFER_MAX, this limit here should never be hit. */ | |
4115 | if (strlen(e) > STATUS_TEXT_MAX) | |
4116 | log_unit_warning(u, "Status message overly long (%zu > %u), ignoring.", strlen(e), STATUS_TEXT_MAX); | |
4117 | else if (!utf8_is_valid(e)) | |
4118 | log_unit_warning(u, "Status message in notification message is not UTF-8 clean, ignoring."); | |
28849dba | 4119 | else { |
28849dba LP |
4120 | t = strdup(e); |
4121 | if (!t) | |
4122 | log_oom(); | |
3a2776bc | 4123 | } |
28849dba | 4124 | } |
8c47c732 | 4125 | |
30b5275a | 4126 | if (!streq_ptr(s->status_text, t)) { |
3b319885 | 4127 | free_and_replace(s->status_text, t); |
30b5275a | 4128 | notify_dbus = true; |
28849dba | 4129 | } |
8c47c732 | 4130 | } |
842129f5 | 4131 | |
4774e357 | 4132 | /* Interpret ERRNO= */ |
28849dba | 4133 | e = strv_find_startswith(tags, "ERRNO="); |
4774e357 MAA |
4134 | if (e) { |
4135 | int status_errno; | |
4136 | ||
2fa40742 LP |
4137 | status_errno = parse_errno(e); |
4138 | if (status_errno < 0) | |
4139 | log_unit_warning_errno(u, status_errno, | |
5e1ee764 | 4140 | "Failed to parse ERRNO= field value '%s' in notification message: %m", e); |
2fa40742 LP |
4141 | else if (s->status_errno != status_errno) { |
4142 | s->status_errno = status_errno; | |
4143 | notify_dbus = true; | |
4774e357 MAA |
4144 | } |
4145 | } | |
4146 | ||
a327431b DB |
4147 | /* Interpret EXTEND_TIMEOUT= */ |
4148 | e = strv_find_startswith(tags, "EXTEND_TIMEOUT_USEC="); | |
4149 | if (e) { | |
4150 | usec_t extend_timeout_usec; | |
4151 | if (safe_atou64(e, &extend_timeout_usec) < 0) | |
4152 | log_unit_warning(u, "Failed to parse EXTEND_TIMEOUT_USEC=%s", e); | |
4153 | else | |
4154 | service_extend_timeout(s, extend_timeout_usec); | |
4155 | } | |
4156 | ||
6f285378 | 4157 | /* Interpret WATCHDOG= */ |
99b43caf JK |
4158 | e = strv_find_startswith(tags, "WATCHDOG="); |
4159 | if (e) { | |
4160 | if (streq(e, "1")) | |
4161 | service_reset_watchdog(s); | |
4162 | else if (streq(e, "trigger")) | |
4163 | service_force_watchdog(s); | |
4164 | else | |
4165 | log_unit_warning(u, "Passed WATCHDOG= field is invalid, ignoring."); | |
4166 | } | |
c4e2ceae | 4167 | |
c45d11cb LP |
4168 | e = strv_find_startswith(tags, "WATCHDOG_USEC="); |
4169 | if (e) { | |
4170 | usec_t watchdog_override_usec; | |
4171 | if (safe_atou64(e, &watchdog_override_usec) < 0) | |
4172 | log_unit_warning(u, "Failed to parse WATCHDOG_USEC=%s", e); | |
4173 | else | |
95d0d8ed | 4174 | service_override_watchdog_timeout(s, watchdog_override_usec); |
c45d11cb LP |
4175 | } |
4176 | ||
e78ee06d LP |
4177 | /* Process FD store messages. Either FDSTOREREMOVE=1 for removal, or FDSTORE=1 for addition. In both cases, |
4178 | * process FDNAME= for picking the file descriptor name to use. Note that FDNAME= is required when removing | |
4179 | * fds, but optional when pushing in new fds, for compatibility reasons. */ | |
4180 | if (strv_find(tags, "FDSTOREREMOVE=1")) { | |
4181 | const char *name; | |
4182 | ||
4183 | name = strv_find_startswith(tags, "FDNAME="); | |
4184 | if (!name || !fdname_is_valid(name)) | |
4185 | log_unit_warning(u, "FDSTOREREMOVE=1 requested, but no valid file descriptor name passed, ignoring."); | |
4186 | else | |
4187 | service_remove_fd_store(s, name); | |
4188 | ||
4189 | } else if (strv_find(tags, "FDSTORE=1")) { | |
8dd4c05b LP |
4190 | const char *name; |
4191 | ||
4192 | name = strv_find_startswith(tags, "FDNAME="); | |
4193 | if (name && !fdname_is_valid(name)) { | |
4194 | log_unit_warning(u, "Passed FDNAME= name is invalid, ignoring."); | |
4195 | name = NULL; | |
4196 | } | |
4197 | ||
cb5a46b8 | 4198 | (void) service_add_fd_store_set(s, fds, name, !strv_contains(tags, "FDPOLL=0")); |
8dd4c05b | 4199 | } |
a354329f | 4200 | |
c4e2ceae | 4201 | /* Notify clients about changed status or main pid */ |
30b5275a LP |
4202 | if (notify_dbus) |
4203 | unit_add_to_dbus_queue(u); | |
8c47c732 LP |
4204 | } |
4205 | ||
7a7821c8 | 4206 | static int service_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 4207 | Service *s = SERVICE(u); |
7a7821c8 | 4208 | uint64_t t; |
68db7a3b ZJS |
4209 | int r; |
4210 | ||
4211 | if (!s->timer_event_source) | |
4212 | return 0; | |
4213 | ||
7a7821c8 | 4214 | r = sd_event_source_get_time(s->timer_event_source, &t); |
68db7a3b ZJS |
4215 | if (r < 0) |
4216 | return r; | |
7a7821c8 LP |
4217 | if (t == USEC_INFINITY) |
4218 | return 0; | |
68db7a3b | 4219 | |
7a7821c8 | 4220 | *timeout = t; |
68db7a3b ZJS |
4221 | return 1; |
4222 | } | |
4223 | ||
fc67a943 | 4224 | static void service_bus_name_owner_change(Unit *u, const char *new_owner) { |
05e343b7 LP |
4225 | |
4226 | Service *s = SERVICE(u); | |
718db961 | 4227 | int r; |
05e343b7 LP |
4228 | |
4229 | assert(s); | |
05e343b7 | 4230 | |
fc67a943 LP |
4231 | if (new_owner) |
4232 | log_unit_debug(u, "D-Bus name %s now owned by %s", s->bus_name, new_owner); | |
05e343b7 | 4233 | else |
fc67a943 | 4234 | log_unit_debug(u, "D-Bus name %s now not owned by anyone.", s->bus_name); |
05e343b7 | 4235 | |
d7a0f1f4 | 4236 | s->bus_name_good = new_owner; |
05e343b7 | 4237 | |
d8ccf5fd DM |
4238 | /* Track the current owner, so we can reconstruct changes after a daemon reload */ |
4239 | r = free_and_strdup(&s->bus_name_owner, new_owner); | |
4240 | if (r < 0) { | |
4241 | log_unit_error_errno(u, r, "Unable to set new bus name owner %s: %m", new_owner); | |
4242 | return; | |
4243 | } | |
4244 | ||
05e343b7 LP |
4245 | if (s->type == SERVICE_DBUS) { |
4246 | ||
4247 | /* service_enter_running() will figure out what to | |
4248 | * do */ | |
4249 | if (s->state == SERVICE_RUNNING) | |
f42806df | 4250 | service_enter_running(s, SERVICE_SUCCESS); |
05e343b7 LP |
4251 | else if (s->state == SERVICE_START && new_owner) |
4252 | service_enter_start_post(s); | |
4253 | ||
4254 | } else if (new_owner && | |
4255 | s->main_pid <= 0 && | |
a6951a50 LP |
4256 | IN_SET(s->state, |
4257 | SERVICE_START, | |
4258 | SERVICE_START_POST, | |
4259 | SERVICE_RUNNING, | |
4260 | SERVICE_RELOAD)) { | |
05e343b7 | 4261 | |
4afd3348 | 4262 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; |
718db961 | 4263 | pid_t pid; |
05e343b7 | 4264 | |
718db961 | 4265 | /* Try to acquire PID from bus service */ |
05e343b7 | 4266 | |
a5a8776a | 4267 | r = sd_bus_get_name_creds(u->manager->api_bus, s->bus_name, SD_BUS_CREDS_PID, &creds); |
5b12334d LP |
4268 | if (r >= 0) |
4269 | r = sd_bus_creds_get_pid(creds, &pid); | |
718db961 | 4270 | if (r >= 0) { |
a5a8776a | 4271 | log_unit_debug(u, "D-Bus name %s is now owned by process " PID_FMT, s->bus_name, pid); |
05e343b7 | 4272 | |
718db961 | 4273 | service_set_main_pid(s, pid); |
f75f613d | 4274 | unit_watch_pid(UNIT(s), pid, false); |
718db961 | 4275 | } |
7400b9d2 | 4276 | } |
05e343b7 LP |
4277 | } |
4278 | ||
16115b0a | 4279 | int service_set_socket_fd(Service *s, int fd, Socket *sock, bool selinux_context_net) { |
79a98c60 LP |
4280 | _cleanup_free_ char *peer = NULL; |
4281 | int r; | |
57020a3a | 4282 | |
4f2d528d LP |
4283 | assert(s); |
4284 | assert(fd >= 0); | |
4285 | ||
7f2fbbff LP |
4286 | /* This is called by the socket code when instantiating a new service for a stream socket and the socket needs |
4287 | * to be configured. We take ownership of the passed fd on success. */ | |
4f2d528d | 4288 | |
1124fe6f | 4289 | if (UNIT(s)->load_state != UNIT_LOADED) |
4f2d528d LP |
4290 | return -EINVAL; |
4291 | ||
4292 | if (s->socket_fd >= 0) | |
4293 | return -EBUSY; | |
4294 | ||
4295 | if (s->state != SERVICE_DEAD) | |
4296 | return -EAGAIN; | |
4297 | ||
366b7db4 | 4298 | if (getpeername_pretty(fd, true, &peer) >= 0) { |
79a98c60 LP |
4299 | |
4300 | if (UNIT(s)->description) { | |
c2b2df60 | 4301 | _cleanup_free_ char *a = NULL; |
79a98c60 | 4302 | |
605405c6 | 4303 | a = strjoin(UNIT(s)->description, " (", peer, ")"); |
79a98c60 LP |
4304 | if (!a) |
4305 | return -ENOMEM; | |
4306 | ||
4307 | r = unit_set_description(UNIT(s), a); | |
4308 | } else | |
4309 | r = unit_set_description(UNIT(s), peer); | |
4310 | ||
4311 | if (r < 0) | |
4312 | return r; | |
4313 | } | |
4314 | ||
eef85c4a | 4315 | r = unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false, UNIT_DEPENDENCY_IMPLICIT); |
7f2fbbff LP |
4316 | if (r < 0) |
4317 | return r; | |
4318 | ||
4f2d528d | 4319 | s->socket_fd = fd; |
16115b0a | 4320 | s->socket_fd_selinux_context_net = selinux_context_net; |
6cf6bbc2 | 4321 | |
7f7d01ed | 4322 | unit_ref_set(&s->accept_socket, UNIT(s), UNIT(sock)); |
7f2fbbff | 4323 | return 0; |
4f2d528d LP |
4324 | } |
4325 | ||
fdf20a31 | 4326 | static void service_reset_failed(Unit *u) { |
5632e374 LP |
4327 | Service *s = SERVICE(u); |
4328 | ||
4329 | assert(s); | |
4330 | ||
fdf20a31 | 4331 | if (s->state == SERVICE_FAILED) |
5632e374 LP |
4332 | service_set_state(s, SERVICE_DEAD); |
4333 | ||
f42806df LP |
4334 | s->result = SERVICE_SUCCESS; |
4335 | s->reload_result = SERVICE_SUCCESS; | |
4c2f5842 | 4336 | s->clean_result = SERVICE_SUCCESS; |
7a0019d3 LP |
4337 | s->n_restarts = 0; |
4338 | s->flush_n_restarts = false; | |
5632e374 LP |
4339 | } |
4340 | ||
718db961 | 4341 | static int service_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
8a0867d6 | 4342 | Service *s = SERVICE(u); |
41efeaec | 4343 | |
a6951a50 LP |
4344 | assert(s); |
4345 | ||
814cc562 | 4346 | return unit_kill_common(u, who, signo, s->main_pid, s->control_pid, error); |
8a0867d6 LP |
4347 | } |
4348 | ||
291d565a LP |
4349 | static int service_main_pid(Unit *u) { |
4350 | Service *s = SERVICE(u); | |
4351 | ||
4352 | assert(s); | |
4353 | ||
4354 | return s->main_pid; | |
4355 | } | |
4356 | ||
4357 | static int service_control_pid(Unit *u) { | |
4358 | Service *s = SERVICE(u); | |
4359 | ||
4360 | assert(s); | |
4361 | ||
4362 | return s->control_pid; | |
4363 | } | |
4364 | ||
bb2c7685 LP |
4365 | static bool service_needs_console(Unit *u) { |
4366 | Service *s = SERVICE(u); | |
4367 | ||
4368 | assert(s); | |
4369 | ||
4370 | /* We provide our own implementation of this here, instead of relying of the generic implementation | |
4371 | * unit_needs_console() provides, since we want to return false if we are in SERVICE_EXITED state. */ | |
4372 | ||
4373 | if (!exec_context_may_touch_console(&s->exec_context)) | |
4374 | return false; | |
4375 | ||
4376 | return IN_SET(s->state, | |
31cd5f63 | 4377 | SERVICE_CONDITION, |
bb2c7685 LP |
4378 | SERVICE_START_PRE, |
4379 | SERVICE_START, | |
4380 | SERVICE_START_POST, | |
4381 | SERVICE_RUNNING, | |
4382 | SERVICE_RELOAD, | |
4383 | SERVICE_STOP, | |
c87700a1 | 4384 | SERVICE_STOP_WATCHDOG, |
bb2c7685 LP |
4385 | SERVICE_STOP_SIGTERM, |
4386 | SERVICE_STOP_SIGKILL, | |
4387 | SERVICE_STOP_POST, | |
bf760801 | 4388 | SERVICE_FINAL_WATCHDOG, |
bb2c7685 LP |
4389 | SERVICE_FINAL_SIGTERM, |
4390 | SERVICE_FINAL_SIGKILL); | |
4391 | } | |
4392 | ||
7af67e9a LP |
4393 | static int service_exit_status(Unit *u) { |
4394 | Service *s = SERVICE(u); | |
4395 | ||
4396 | assert(u); | |
4397 | ||
4398 | if (s->main_exec_status.pid <= 0 || | |
4399 | !dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) | |
4400 | return -ENODATA; | |
4401 | ||
4402 | if (s->main_exec_status.code != CLD_EXITED) | |
4403 | return -EBADE; | |
4404 | ||
4405 | return s->main_exec_status.status; | |
4406 | } | |
4407 | ||
5e1669ff ZJS |
4408 | static const char* service_status_text(Unit *u) { |
4409 | Service *s = SERVICE(u); | |
4410 | ||
4411 | assert(s); | |
4412 | ||
4413 | return s->status_text; | |
4414 | } | |
4415 | ||
4c2f5842 LP |
4416 | static int service_clean(Unit *u, ExecCleanMask mask) { |
4417 | _cleanup_strv_free_ char **l = NULL; | |
4418 | Service *s = SERVICE(u); | |
4c2f5842 LP |
4419 | int r; |
4420 | ||
4421 | assert(s); | |
4422 | assert(mask != 0); | |
4423 | ||
4424 | if (s->state != SERVICE_DEAD) | |
4425 | return -EBUSY; | |
4426 | ||
4427 | r = exec_context_get_clean_directories(&s->exec_context, u->manager->prefix, mask, &l); | |
4428 | if (r < 0) | |
4429 | return r; | |
4430 | ||
4431 | if (strv_isempty(l)) | |
4432 | return -EUNATCH; | |
4433 | ||
4434 | service_unwatch_control_pid(s); | |
4435 | s->clean_result = SERVICE_SUCCESS; | |
4436 | s->control_command = NULL; | |
4437 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
4438 | ||
12213aed | 4439 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->exec_context.timeout_clean_usec)); |
4c2f5842 LP |
4440 | if (r < 0) |
4441 | goto fail; | |
4442 | ||
810ef318 | 4443 | r = unit_fork_and_watch_rm_rf(u, l, &s->control_pid); |
4c2f5842 LP |
4444 | if (r < 0) |
4445 | goto fail; | |
4446 | ||
4c2f5842 LP |
4447 | service_set_state(s, SERVICE_CLEANING); |
4448 | ||
4449 | return 0; | |
4450 | ||
4451 | fail: | |
810ef318 | 4452 | log_unit_warning_errno(u, r, "Failed to initiate cleaning: %m"); |
4c2f5842 | 4453 | s->clean_result = SERVICE_FAILURE_RESOURCES; |
5dcadb4c | 4454 | s->timer_event_source = sd_event_source_disable_unref(s->timer_event_source); |
4c2f5842 LP |
4455 | return r; |
4456 | } | |
4457 | ||
4458 | static int service_can_clean(Unit *u, ExecCleanMask *ret) { | |
4459 | Service *s = SERVICE(u); | |
4460 | ||
4461 | assert(s); | |
4462 | ||
4463 | return exec_context_get_clean_mask(&s->exec_context, ret); | |
4464 | } | |
4465 | ||
eda0cbf0 | 4466 | static const char *service_finished_job(Unit *u, JobType t, JobResult result) { |
04d232d8 ZJS |
4467 | if (t == JOB_START && |
4468 | result == JOB_DONE && | |
4469 | SERVICE(u)->type == SERVICE_ONESHOT) | |
4470 | return "Finished %s."; | |
eda0cbf0 ZJS |
4471 | |
4472 | /* Fall back to generic */ | |
4473 | return NULL; | |
4474 | } | |
4475 | ||
9727f242 DDM |
4476 | static int service_test_start_limit(Unit *u) { |
4477 | Service *s = SERVICE(u); | |
4478 | int r; | |
4479 | ||
4480 | assert(s); | |
4481 | ||
4482 | /* Make sure we don't enter a busy loop of some kind. */ | |
4483 | r = unit_test_start_limit(u); | |
4484 | if (r < 0) { | |
4485 | service_enter_dead(s, SERVICE_FAILURE_START_LIMIT_HIT, false); | |
4486 | return r; | |
4487 | } | |
4488 | ||
4489 | return 0; | |
4490 | } | |
4491 | ||
94f04347 | 4492 | static const char* const service_restart_table[_SERVICE_RESTART_MAX] = { |
48d83e33 ZJS |
4493 | [SERVICE_RESTART_NO] = "no", |
4494 | [SERVICE_RESTART_ON_SUCCESS] = "on-success", | |
4495 | [SERVICE_RESTART_ON_FAILURE] = "on-failure", | |
6cfe2fde | 4496 | [SERVICE_RESTART_ON_ABNORMAL] = "on-abnormal", |
dc99a976 | 4497 | [SERVICE_RESTART_ON_WATCHDOG] = "on-watchdog", |
48d83e33 ZJS |
4498 | [SERVICE_RESTART_ON_ABORT] = "on-abort", |
4499 | [SERVICE_RESTART_ALWAYS] = "always", | |
94f04347 LP |
4500 | }; |
4501 | ||
4502 | DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart); | |
4503 | ||
4504 | static const char* const service_type_table[_SERVICE_TYPE_MAX] = { | |
48d83e33 | 4505 | [SERVICE_SIMPLE] = "simple", |
0d624a78 | 4506 | [SERVICE_FORKING] = "forking", |
34e9ba66 | 4507 | [SERVICE_ONESHOT] = "oneshot", |
48d83e33 ZJS |
4508 | [SERVICE_DBUS] = "dbus", |
4509 | [SERVICE_NOTIFY] = "notify", | |
4510 | [SERVICE_IDLE] = "idle", | |
4511 | [SERVICE_EXEC] = "exec", | |
94f04347 LP |
4512 | }; |
4513 | ||
4514 | DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType); | |
4515 | ||
e537352b | 4516 | static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = { |
48d83e33 ZJS |
4517 | [SERVICE_EXEC_CONDITION] = "ExecCondition", |
4518 | [SERVICE_EXEC_START_PRE] = "ExecStartPre", | |
4519 | [SERVICE_EXEC_START] = "ExecStart", | |
94f04347 | 4520 | [SERVICE_EXEC_START_POST] = "ExecStartPost", |
48d83e33 ZJS |
4521 | [SERVICE_EXEC_RELOAD] = "ExecReload", |
4522 | [SERVICE_EXEC_STOP] = "ExecStop", | |
4523 | [SERVICE_EXEC_STOP_POST] = "ExecStopPost", | |
94f04347 LP |
4524 | }; |
4525 | ||
4526 | DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand); | |
4527 | ||
b3d59367 | 4528 | static const char* const service_exec_ex_command_table[_SERVICE_EXEC_COMMAND_MAX] = { |
48d83e33 ZJS |
4529 | [SERVICE_EXEC_CONDITION] = "ExecConditionEx", |
4530 | [SERVICE_EXEC_START_PRE] = "ExecStartPreEx", | |
4531 | [SERVICE_EXEC_START] = "ExecStartEx", | |
b3d59367 | 4532 | [SERVICE_EXEC_START_POST] = "ExecStartPostEx", |
48d83e33 ZJS |
4533 | [SERVICE_EXEC_RELOAD] = "ExecReloadEx", |
4534 | [SERVICE_EXEC_STOP] = "ExecStopEx", | |
4535 | [SERVICE_EXEC_STOP_POST] = "ExecStopPostEx", | |
b3d59367 AZ |
4536 | }; |
4537 | ||
4538 | DEFINE_STRING_TABLE_LOOKUP(service_exec_ex_command, ServiceExecCommand); | |
4539 | ||
308d72dc | 4540 | static const char* const notify_state_table[_NOTIFY_STATE_MAX] = { |
48d83e33 ZJS |
4541 | [NOTIFY_UNKNOWN] = "unknown", |
4542 | [NOTIFY_READY] = "ready", | |
308d72dc | 4543 | [NOTIFY_RELOADING] = "reloading", |
48d83e33 | 4544 | [NOTIFY_STOPPING] = "stopping", |
308d72dc LP |
4545 | }; |
4546 | ||
4547 | DEFINE_STRING_TABLE_LOOKUP(notify_state, NotifyState); | |
4548 | ||
f42806df | 4549 | static const char* const service_result_table[_SERVICE_RESULT_MAX] = { |
48d83e33 ZJS |
4550 | [SERVICE_SUCCESS] = "success", |
4551 | [SERVICE_FAILURE_RESOURCES] = "resources", | |
4552 | [SERVICE_FAILURE_PROTOCOL] = "protocol", | |
4553 | [SERVICE_FAILURE_TIMEOUT] = "timeout", | |
4554 | [SERVICE_FAILURE_EXIT_CODE] = "exit-code", | |
4555 | [SERVICE_FAILURE_SIGNAL] = "signal", | |
4556 | [SERVICE_FAILURE_CORE_DUMP] = "core-dump", | |
4557 | [SERVICE_FAILURE_WATCHDOG] = "watchdog", | |
07299350 | 4558 | [SERVICE_FAILURE_START_LIMIT_HIT] = "start-limit-hit", |
48d83e33 ZJS |
4559 | [SERVICE_FAILURE_OOM_KILL] = "oom-kill", |
4560 | [SERVICE_SKIP_CONDITION] = "exec-condition", | |
f42806df LP |
4561 | }; |
4562 | ||
4563 | DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult); | |
4564 | ||
bf760801 JK |
4565 | static const char* const service_timeout_failure_mode_table[_SERVICE_TIMEOUT_FAILURE_MODE_MAX] = { |
4566 | [SERVICE_TIMEOUT_TERMINATE] = "terminate", | |
48d83e33 ZJS |
4567 | [SERVICE_TIMEOUT_ABORT] = "abort", |
4568 | [SERVICE_TIMEOUT_KILL] = "kill", | |
bf760801 JK |
4569 | }; |
4570 | ||
4571 | DEFINE_STRING_TABLE_LOOKUP(service_timeout_failure_mode, ServiceTimeoutFailureMode); | |
4572 | ||
87f0e418 | 4573 | const UnitVTable service_vtable = { |
7d17cfbc | 4574 | .object_size = sizeof(Service), |
718db961 LP |
4575 | .exec_context_offset = offsetof(Service, exec_context), |
4576 | .cgroup_context_offset = offsetof(Service, cgroup_context), | |
4577 | .kill_context_offset = offsetof(Service, kill_context), | |
613b411c | 4578 | .exec_runtime_offset = offsetof(Service, exec_runtime), |
29206d46 | 4579 | .dynamic_creds_offset = offsetof(Service, dynamic_creds), |
3ef63c31 | 4580 | |
f975e971 LP |
4581 | .sections = |
4582 | "Unit\0" | |
4583 | "Service\0" | |
4584 | "Install\0", | |
4ad49000 | 4585 | .private_section = "Service", |
71645aca | 4586 | |
1d9cc876 LP |
4587 | .can_transient = true, |
4588 | .can_delegate = true, | |
c80a9a33 | 4589 | .can_fail = true, |
4d824a4e | 4590 | .can_set_managed_oom = true, |
1d9cc876 | 4591 | |
034c6ed7 LP |
4592 | .init = service_init, |
4593 | .done = service_done, | |
a16e1123 | 4594 | .load = service_load, |
a354329f | 4595 | .release_resources = service_release_resources, |
a16e1123 LP |
4596 | |
4597 | .coldplug = service_coldplug, | |
034c6ed7 | 4598 | |
5cb5a6ff LP |
4599 | .dump = service_dump, |
4600 | ||
4601 | .start = service_start, | |
4602 | .stop = service_stop, | |
4603 | .reload = service_reload, | |
4604 | ||
034c6ed7 LP |
4605 | .can_reload = service_can_reload, |
4606 | ||
8a0867d6 | 4607 | .kill = service_kill, |
4c2f5842 LP |
4608 | .clean = service_clean, |
4609 | .can_clean = service_can_clean, | |
8a0867d6 | 4610 | |
d9e45bc3 MS |
4611 | .freeze = unit_freeze_vtable_common, |
4612 | .thaw = unit_thaw_vtable_common, | |
4613 | ||
a16e1123 LP |
4614 | .serialize = service_serialize, |
4615 | .deserialize_item = service_deserialize_item, | |
4616 | ||
5cb5a6ff | 4617 | .active_state = service_active_state, |
10a94420 | 4618 | .sub_state_to_string = service_sub_state_to_string, |
5cb5a6ff | 4619 | |
deb4e708 MK |
4620 | .will_restart = service_will_restart, |
4621 | ||
f2f725e5 | 4622 | .may_gc = service_may_gc, |
701cc384 | 4623 | |
034c6ed7 | 4624 | .sigchld_event = service_sigchld_event, |
2c4104f0 | 4625 | |
fdf20a31 | 4626 | .reset_failed = service_reset_failed, |
5632e374 | 4627 | |
4ad49000 | 4628 | .notify_cgroup_empty = service_notify_cgroup_empty_event, |
afcfaa69 | 4629 | .notify_cgroup_oom = service_notify_cgroup_oom_event, |
8c47c732 | 4630 | .notify_message = service_notify_message, |
8e274523 | 4631 | |
291d565a LP |
4632 | .main_pid = service_main_pid, |
4633 | .control_pid = service_control_pid, | |
4634 | ||
05e343b7 | 4635 | .bus_name_owner_change = service_bus_name_owner_change, |
05e343b7 | 4636 | |
74c964d3 LP |
4637 | .bus_set_property = bus_service_set_property, |
4638 | .bus_commit_properties = bus_service_commit_properties, | |
4139c1b2 | 4639 | |
68db7a3b | 4640 | .get_timeout = service_get_timeout, |
bb2c7685 | 4641 | .needs_console = service_needs_console, |
7af67e9a | 4642 | .exit_status = service_exit_status, |
5e1669ff | 4643 | .status_text = service_status_text, |
718db961 | 4644 | |
c6918296 | 4645 | .status_message_formats = { |
c6918296 | 4646 | .finished_start_job = { |
c6918296 | 4647 | [JOB_FAILED] = "Failed to start %s.", |
c6918296 MS |
4648 | }, |
4649 | .finished_stop_job = { | |
4650 | [JOB_DONE] = "Stopped %s.", | |
4651 | [JOB_FAILED] = "Stopped (with error) %s.", | |
c6918296 | 4652 | }, |
eda0cbf0 | 4653 | .finished_job = service_finished_job, |
c6918296 | 4654 | }, |
9727f242 DDM |
4655 | |
4656 | .test_start_limit = service_test_start_limit, | |
5cb5a6ff | 4657 | }; |