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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" | |
4139c1b2 | 15 | #include "dbus-service.h" |
6fcbec6f | 16 | #include "dbus-unit.h" |
f6a6225e | 17 | #include "def.h" |
4d1a6904 | 18 | #include "env-util.h" |
4f5dd394 LP |
19 | #include "escape.h" |
20 | #include "exit-status.h" | |
3ffd4af2 | 21 | #include "fd-util.h" |
a5c32cff | 22 | #include "fileio.h" |
f97b34a6 | 23 | #include "format-util.h" |
f4f15635 | 24 | #include "fs-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" |
d68c645b | 32 | #include "serialize.h" |
3ffd4af2 | 33 | #include "service.h" |
24882e06 | 34 | #include "signal-util.h" |
4f5dd394 | 35 | #include "special.h" |
e266c068 | 36 | #include "stdio-util.h" |
8b43440b | 37 | #include "string-table.h" |
07630cea | 38 | #include "string-util.h" |
4f5dd394 LP |
39 | #include "strv.h" |
40 | #include "unit-name.h" | |
4f5dd394 LP |
41 | #include "unit.h" |
42 | #include "utf8.h" | |
43 | #include "util.h" | |
034c6ed7 | 44 | |
acbb0225 | 45 | static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = { |
87f0e418 | 46 | [SERVICE_DEAD] = UNIT_INACTIVE, |
31cd5f63 | 47 | [SERVICE_CONDITION] = UNIT_ACTIVATING, |
87f0e418 LP |
48 | [SERVICE_START_PRE] = UNIT_ACTIVATING, |
49 | [SERVICE_START] = UNIT_ACTIVATING, | |
50 | [SERVICE_START_POST] = UNIT_ACTIVATING, | |
51 | [SERVICE_RUNNING] = UNIT_ACTIVE, | |
80876c20 | 52 | [SERVICE_EXITED] = UNIT_ACTIVE, |
032ff4af | 53 | [SERVICE_RELOAD] = UNIT_RELOADING, |
87f0e418 | 54 | [SERVICE_STOP] = UNIT_DEACTIVATING, |
c87700a1 | 55 | [SERVICE_STOP_WATCHDOG] = UNIT_DEACTIVATING, |
87f0e418 LP |
56 | [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, |
57 | [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
58 | [SERVICE_STOP_POST] = UNIT_DEACTIVATING, | |
bf760801 | 59 | [SERVICE_FINAL_WATCHDOG] = UNIT_DEACTIVATING, |
87f0e418 LP |
60 | [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, |
61 | [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
fdf20a31 | 62 | [SERVICE_FAILED] = UNIT_FAILED, |
4c2f5842 LP |
63 | [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING, |
64 | [SERVICE_CLEANING] = UNIT_MAINTENANCE, | |
034c6ed7 | 65 | }; |
5cb5a6ff | 66 | |
e056b01d LP |
67 | /* For Type=idle we never want to delay any other jobs, hence we |
68 | * consider idle jobs active as soon as we start working on them */ | |
69 | static const UnitActiveState state_translation_table_idle[_SERVICE_STATE_MAX] = { | |
70 | [SERVICE_DEAD] = UNIT_INACTIVE, | |
31cd5f63 | 71 | [SERVICE_CONDITION] = UNIT_ACTIVE, |
e056b01d LP |
72 | [SERVICE_START_PRE] = UNIT_ACTIVE, |
73 | [SERVICE_START] = UNIT_ACTIVE, | |
74 | [SERVICE_START_POST] = UNIT_ACTIVE, | |
75 | [SERVICE_RUNNING] = UNIT_ACTIVE, | |
76 | [SERVICE_EXITED] = UNIT_ACTIVE, | |
77 | [SERVICE_RELOAD] = UNIT_RELOADING, | |
78 | [SERVICE_STOP] = UNIT_DEACTIVATING, | |
c87700a1 | 79 | [SERVICE_STOP_WATCHDOG] = UNIT_DEACTIVATING, |
e056b01d LP |
80 | [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, |
81 | [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
82 | [SERVICE_STOP_POST] = UNIT_DEACTIVATING, | |
bf760801 | 83 | [SERVICE_FINAL_WATCHDOG] = UNIT_DEACTIVATING, |
e056b01d LP |
84 | [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, |
85 | [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
86 | [SERVICE_FAILED] = UNIT_FAILED, | |
4c2f5842 LP |
87 | [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING, |
88 | [SERVICE_CLEANING] = UNIT_MAINTENANCE, | |
e056b01d LP |
89 | }; |
90 | ||
5686391b | 91 | static int service_dispatch_inotify_io(sd_event_source *source, int fd, uint32_t events, void *userdata); |
718db961 LP |
92 | static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); |
93 | static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata); | |
5686391b | 94 | static int service_dispatch_exec_io(sd_event_source *source, int fd, uint32_t events, void *userdata); |
718db961 | 95 | |
842129f5 | 96 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f); |
308d72dc | 97 | static void service_enter_reload_by_notify(Service *s); |
842129f5 | 98 | |
a16e1123 LP |
99 | static void service_init(Unit *u) { |
100 | Service *s = SERVICE(u); | |
101 | ||
102 | assert(u); | |
ac155bb8 | 103 | assert(u->load_state == UNIT_STUB); |
a16e1123 | 104 | |
1f19a534 OS |
105 | s->timeout_start_usec = u->manager->default_timeout_start_usec; |
106 | s->timeout_stop_usec = u->manager->default_timeout_stop_usec; | |
dc653bf4 JK |
107 | s->timeout_abort_usec = u->manager->default_timeout_abort_usec; |
108 | s->timeout_abort_set = u->manager->default_timeout_abort_set; | |
1f19a534 | 109 | s->restart_usec = u->manager->default_restart_usec; |
36c16a7c | 110 | s->runtime_max_usec = USEC_INFINITY; |
0b86feac | 111 | s->type = _SERVICE_TYPE_INVALID; |
a16e1123 | 112 | s->socket_fd = -1; |
a34ceba6 | 113 | s->stdin_fd = s->stdout_fd = s->stderr_fd = -1; |
3185a36b | 114 | s->guess_main_pid = true; |
a16e1123 | 115 | |
a16e1123 | 116 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; |
00f5ad93 LP |
117 | |
118 | s->exec_context.keyring_mode = MANAGER_IS_SYSTEM(u->manager) ? | |
119 | EXEC_KEYRING_PRIVATE : EXEC_KEYRING_INHERIT; | |
aa8c4bbf LP |
120 | |
121 | s->watchdog_original_usec = USEC_INFINITY; | |
afcfaa69 LP |
122 | |
123 | s->oom_policy = _OOM_POLICY_INVALID; | |
a16e1123 LP |
124 | } |
125 | ||
5e94833f LP |
126 | static void service_unwatch_control_pid(Service *s) { |
127 | assert(s); | |
128 | ||
129 | if (s->control_pid <= 0) | |
130 | return; | |
131 | ||
132 | unit_unwatch_pid(UNIT(s), s->control_pid); | |
133 | s->control_pid = 0; | |
134 | } | |
135 | ||
136 | static void service_unwatch_main_pid(Service *s) { | |
137 | assert(s); | |
138 | ||
139 | if (s->main_pid <= 0) | |
140 | return; | |
141 | ||
142 | unit_unwatch_pid(UNIT(s), s->main_pid); | |
143 | s->main_pid = 0; | |
144 | } | |
145 | ||
3e52541e MS |
146 | static void service_unwatch_pid_file(Service *s) { |
147 | if (!s->pid_file_pathspec) | |
148 | return; | |
149 | ||
f2341e0a | 150 | log_unit_debug(UNIT(s), "Stopping watch for PID file %s", s->pid_file_pathspec->path); |
718db961 | 151 | path_spec_unwatch(s->pid_file_pathspec); |
3e52541e | 152 | path_spec_done(s->pid_file_pathspec); |
a1e58e8e | 153 | s->pid_file_pathspec = mfree(s->pid_file_pathspec); |
3e52541e MS |
154 | } |
155 | ||
5925dd3c LP |
156 | static int service_set_main_pid(Service *s, pid_t pid) { |
157 | assert(s); | |
158 | ||
159 | if (pid <= 1) | |
160 | return -EINVAL; | |
161 | ||
df0ff127 | 162 | if (pid == getpid_cached()) |
5925dd3c LP |
163 | return -EINVAL; |
164 | ||
7400b9d2 LP |
165 | if (s->main_pid == pid && s->main_pid_known) |
166 | return 0; | |
167 | ||
168 | if (s->main_pid != pid) { | |
169 | service_unwatch_main_pid(s); | |
170 | exec_status_start(&s->main_exec_status, pid); | |
171 | } | |
41efeaec | 172 | |
6dfa5494 LP |
173 | s->main_pid = pid; |
174 | s->main_pid_known = true; | |
4d051546 | 175 | s->main_pid_alien = pid_is_my_child(pid) == 0; |
6dfa5494 | 176 | |
4d051546 | 177 | if (s->main_pid_alien) |
f2341e0a | 178 | 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 |
179 | |
180 | return 0; | |
181 | } | |
182 | ||
3e7a1f50 | 183 | void service_close_socket_fd(Service *s) { |
4f2d528d LP |
184 | assert(s); |
185 | ||
5cc3985e | 186 | /* Undo the effect of service_set_socket_fd(). */ |
4f2d528d | 187 | |
5cc3985e | 188 | s->socket_fd = asynchronous_close(s->socket_fd); |
6cf6bbc2 | 189 | |
5cc3985e LP |
190 | if (UNIT_ISSET(s->accept_socket)) { |
191 | socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket))); | |
192 | unit_ref_unset(&s->accept_socket); | |
193 | } | |
6cf6bbc2 LP |
194 | } |
195 | ||
a6927d7f MO |
196 | static void service_stop_watchdog(Service *s) { |
197 | assert(s); | |
198 | ||
5dcadb4c | 199 | s->watchdog_event_source = sd_event_source_disable_unref(s->watchdog_event_source); |
842129f5 | 200 | s->watchdog_timestamp = DUAL_TIMESTAMP_NULL; |
a6927d7f MO |
201 | } |
202 | ||
842129f5 | 203 | static void service_start_watchdog(Service *s) { |
2787d83c | 204 | usec_t watchdog_usec; |
9fb1cdb4 | 205 | int r; |
bb242b7b MO |
206 | |
207 | assert(s); | |
208 | ||
2787d83c | 209 | watchdog_usec = service_get_watchdog_usec(s); |
9fb1cdb4 LP |
210 | if (IN_SET(watchdog_usec, 0, USEC_INFINITY)) { |
211 | service_stop_watchdog(s); | |
bb242b7b | 212 | return; |
9fb1cdb4 | 213 | } |
bb242b7b | 214 | |
718db961 | 215 | if (s->watchdog_event_source) { |
2787d83c | 216 | r = sd_event_source_set_time(s->watchdog_event_source, usec_add(s->watchdog_timestamp.monotonic, watchdog_usec)); |
718db961 | 217 | if (r < 0) { |
f2341e0a | 218 | log_unit_warning_errno(UNIT(s), r, "Failed to reset watchdog timer: %m"); |
718db961 LP |
219 | return; |
220 | } | |
221 | ||
842129f5 | 222 | r = sd_event_source_set_enabled(s->watchdog_event_source, SD_EVENT_ONESHOT); |
c4ef3317 | 223 | } else { |
6a0f1f6d LP |
224 | r = sd_event_add_time( |
225 | UNIT(s)->manager->event, | |
226 | &s->watchdog_event_source, | |
227 | CLOCK_MONOTONIC, | |
2787d83c | 228 | usec_add(s->watchdog_timestamp.monotonic, watchdog_usec), 0, |
6a0f1f6d | 229 | service_dispatch_watchdog, s); |
c4ef3317 | 230 | if (r < 0) { |
f2341e0a | 231 | log_unit_warning_errno(UNIT(s), r, "Failed to add watchdog timer: %m"); |
c4ef3317 LP |
232 | return; |
233 | } | |
234 | ||
7dfbe2e3 TG |
235 | (void) sd_event_source_set_description(s->watchdog_event_source, "service-watchdog"); |
236 | ||
c4ef3317 LP |
237 | /* Let's process everything else which might be a sign |
238 | * of living before we consider a service died. */ | |
239 | r = sd_event_source_set_priority(s->watchdog_event_source, SD_EVENT_PRIORITY_IDLE); | |
240 | } | |
bb242b7b | 241 | if (r < 0) |
f2341e0a | 242 | log_unit_warning_errno(UNIT(s), r, "Failed to install watchdog timer: %m"); |
bb242b7b MO |
243 | } |
244 | ||
ec35a7f6 LP |
245 | static void service_extend_event_source_timeout(Service *s, sd_event_source *source, usec_t extended) { |
246 | usec_t current; | |
247 | int r; | |
248 | ||
a327431b DB |
249 | assert(s); |
250 | ||
ec35a7f6 LP |
251 | /* Extends the specified event source timer to at least the specified time, unless it is already later |
252 | * anyway. */ | |
a327431b | 253 | |
ec35a7f6 LP |
254 | if (!source) |
255 | return; | |
a327431b | 256 | |
ec35a7f6 LP |
257 | r = sd_event_source_get_time(source, ¤t); |
258 | if (r < 0) { | |
259 | const char *desc; | |
260 | (void) sd_event_source_get_description(s->timer_event_source, &desc); | |
261 | log_unit_warning_errno(UNIT(s), r, "Failed to retrieve timeout time for event source '%s', ignoring: %m", strna(desc)); | |
262 | return; | |
263 | } | |
a327431b | 264 | |
ec35a7f6 LP |
265 | if (current >= extended) /* Current timeout is already longer, ignore this. */ |
266 | return; | |
a327431b | 267 | |
ec35a7f6 LP |
268 | r = sd_event_source_set_time(source, extended); |
269 | if (r < 0) { | |
270 | const char *desc; | |
271 | (void) sd_event_source_get_description(s->timer_event_source, &desc); | |
272 | log_unit_warning_errno(UNIT(s), r, "Failed to set timeout time for even source '%s', ignoring %m", strna(desc)); | |
a327431b DB |
273 | } |
274 | } | |
275 | ||
ec35a7f6 LP |
276 | static void service_extend_timeout(Service *s, usec_t extend_timeout_usec) { |
277 | usec_t extended; | |
278 | ||
279 | assert(s); | |
280 | ||
281 | if (IN_SET(extend_timeout_usec, 0, USEC_INFINITY)) | |
282 | return; | |
283 | ||
284 | extended = usec_add(now(CLOCK_MONOTONIC), extend_timeout_usec); | |
285 | ||
286 | service_extend_event_source_timeout(s, s->timer_event_source, extended); | |
287 | service_extend_event_source_timeout(s, s->watchdog_event_source, extended); | |
288 | } | |
289 | ||
a6927d7f MO |
290 | static void service_reset_watchdog(Service *s) { |
291 | assert(s); | |
292 | ||
293 | dual_timestamp_get(&s->watchdog_timestamp); | |
842129f5 | 294 | service_start_watchdog(s); |
a6927d7f MO |
295 | } |
296 | ||
95d0d8ed | 297 | static void service_override_watchdog_timeout(Service *s, usec_t watchdog_override_usec) { |
2787d83c M |
298 | assert(s); |
299 | ||
300 | s->watchdog_override_enable = true; | |
301 | s->watchdog_override_usec = watchdog_override_usec; | |
302 | service_reset_watchdog(s); | |
303 | ||
304 | log_unit_debug(UNIT(s), "watchdog_usec="USEC_FMT, s->watchdog_usec); | |
305 | log_unit_debug(UNIT(s), "watchdog_override_usec="USEC_FMT, s->watchdog_override_usec); | |
306 | } | |
307 | ||
a354329f LP |
308 | static void service_fd_store_unlink(ServiceFDStore *fs) { |
309 | ||
310 | if (!fs) | |
311 | return; | |
312 | ||
313 | if (fs->service) { | |
314 | assert(fs->service->n_fd_store > 0); | |
315 | LIST_REMOVE(fd_store, fs->service->fd_store, fs); | |
316 | fs->service->n_fd_store--; | |
317 | } | |
318 | ||
1d3fe304 | 319 | sd_event_source_disable_unref(fs->event_source); |
a354329f | 320 | |
8dd4c05b | 321 | free(fs->fdname); |
a354329f LP |
322 | safe_close(fs->fd); |
323 | free(fs); | |
324 | } | |
325 | ||
f0bfbfac ZJS |
326 | static void service_release_fd_store(Service *s) { |
327 | assert(s); | |
328 | ||
7eb2a8a1 LP |
329 | if (s->n_keep_fd_store > 0) |
330 | return; | |
331 | ||
f0bfbfac ZJS |
332 | log_unit_debug(UNIT(s), "Releasing all stored fds"); |
333 | while (s->fd_store) | |
334 | service_fd_store_unlink(s->fd_store); | |
335 | ||
336 | assert(s->n_fd_store == 0); | |
337 | } | |
338 | ||
7eb2a8a1 | 339 | static void service_release_resources(Unit *u) { |
a354329f LP |
340 | Service *s = SERVICE(u); |
341 | ||
342 | assert(s); | |
343 | ||
a34ceba6 | 344 | if (!s->fd_store && s->stdin_fd < 0 && s->stdout_fd < 0 && s->stderr_fd < 0) |
a354329f LP |
345 | return; |
346 | ||
f0bfbfac | 347 | log_unit_debug(u, "Releasing resources."); |
a354329f | 348 | |
a34ceba6 LP |
349 | s->stdin_fd = safe_close(s->stdin_fd); |
350 | s->stdout_fd = safe_close(s->stdout_fd); | |
351 | s->stderr_fd = safe_close(s->stderr_fd); | |
352 | ||
7eb2a8a1 | 353 | service_release_fd_store(s); |
a354329f LP |
354 | } |
355 | ||
87f0e418 LP |
356 | static void service_done(Unit *u) { |
357 | Service *s = SERVICE(u); | |
44d8db9e LP |
358 | |
359 | assert(s); | |
360 | ||
a1e58e8e LP |
361 | s->pid_file = mfree(s->pid_file); |
362 | s->status_text = mfree(s->status_text); | |
efe6e7d3 | 363 | |
e8a565cb | 364 | s->exec_runtime = exec_runtime_unref(s->exec_runtime, false); |
e537352b | 365 | exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); |
44d8db9e | 366 | s->control_command = NULL; |
867b3b7d | 367 | s->main_command = NULL; |
44d8db9e | 368 | |
29206d46 LP |
369 | dynamic_creds_unref(&s->dynamic_creds); |
370 | ||
37520c1b LP |
371 | exit_status_set_free(&s->restart_prevent_status); |
372 | exit_status_set_free(&s->restart_force_status); | |
373 | exit_status_set_free(&s->success_status); | |
96342de6 | 374 | |
44d8db9e LP |
375 | /* This will leak a process, but at least no memory or any of |
376 | * our resources */ | |
5e94833f LP |
377 | service_unwatch_main_pid(s); |
378 | service_unwatch_control_pid(s); | |
3e52541e | 379 | service_unwatch_pid_file(s); |
44d8db9e | 380 | |
05e343b7 | 381 | if (s->bus_name) { |
ac155bb8 | 382 | unit_unwatch_bus_name(u, s->bus_name); |
a1e58e8e | 383 | s->bus_name = mfree(s->bus_name); |
05e343b7 LP |
384 | } |
385 | ||
d8ccf5fd DM |
386 | s->bus_name_owner = mfree(s->bus_name_owner); |
387 | ||
064c5938 ZJS |
388 | s->usb_function_descriptors = mfree(s->usb_function_descriptors); |
389 | s->usb_function_strings = mfree(s->usb_function_strings); | |
390 | ||
4f2d528d | 391 | service_close_socket_fd(s); |
9d565427 | 392 | s->peer = socket_peer_unref(s->peer); |
4f2d528d | 393 | |
57020a3a | 394 | unit_ref_unset(&s->accept_socket); |
f976f3f6 | 395 | |
bb242b7b MO |
396 | service_stop_watchdog(s); |
397 | ||
5dcadb4c ZJS |
398 | s->timer_event_source = sd_event_source_disable_unref(s->timer_event_source); |
399 | s->exec_fd_event_source = sd_event_source_disable_unref(s->exec_fd_event_source); | |
a354329f | 400 | |
7eb2a8a1 | 401 | service_release_resources(u); |
718db961 LP |
402 | } |
403 | ||
2339fc93 LP |
404 | static int on_fd_store_io(sd_event_source *e, int fd, uint32_t revents, void *userdata) { |
405 | ServiceFDStore *fs = userdata; | |
406 | ||
407 | assert(e); | |
408 | assert(fs); | |
409 | ||
410 | /* If we get either EPOLLHUP or EPOLLERR, it's time to remove this entry from the fd store */ | |
16f70d63 ZJS |
411 | log_unit_debug(UNIT(fs->service), |
412 | "Received %s on stored fd %d (%s), closing.", | |
413 | revents & EPOLLERR ? "EPOLLERR" : "EPOLLHUP", | |
414 | fs->fd, strna(fs->fdname)); | |
2339fc93 LP |
415 | service_fd_store_unlink(fs); |
416 | return 0; | |
417 | } | |
418 | ||
cb5a46b8 | 419 | static int service_add_fd_store(Service *s, int fd, const char *name, bool do_poll) { |
2339fc93 LP |
420 | ServiceFDStore *fs; |
421 | int r; | |
422 | ||
9021ff17 ZJS |
423 | /* fd is always consumed if we return >= 0 */ |
424 | ||
2339fc93 LP |
425 | assert(s); |
426 | assert(fd >= 0); | |
427 | ||
428 | if (s->n_fd_store >= s->n_fd_store_max) | |
b0924635 ZJS |
429 | return -EXFULL; /* Our store is full. |
430 | * Use this errno rather than E[NM]FILE to distinguish from | |
431 | * the case where systemd itself hits the file limit. */ | |
2339fc93 LP |
432 | |
433 | LIST_FOREACH(fd_store, fs, s->fd_store) { | |
434 | r = same_fd(fs->fd, fd); | |
435 | if (r < 0) | |
436 | return r; | |
437 | if (r > 0) { | |
2339fc93 | 438 | safe_close(fd); |
9021ff17 | 439 | return 0; /* fd already included */ |
2339fc93 LP |
440 | } |
441 | } | |
442 | ||
b0cea477 | 443 | fs = new(ServiceFDStore, 1); |
2339fc93 LP |
444 | if (!fs) |
445 | return -ENOMEM; | |
446 | ||
b0cea477 LP |
447 | *fs = (ServiceFDStore) { |
448 | .fd = fd, | |
449 | .service = s, | |
450 | .do_poll = do_poll, | |
451 | .fdname = strdup(name ?: "stored"), | |
452 | }; | |
453 | ||
17dec0f7 | 454 | if (!fs->fdname) { |
455 | free(fs); | |
8dd4c05b | 456 | return -ENOMEM; |
17dec0f7 | 457 | } |
2339fc93 | 458 | |
cb5a46b8 KL |
459 | if (do_poll) { |
460 | r = sd_event_add_io(UNIT(s)->manager->event, &fs->event_source, fd, 0, on_fd_store_io, fs); | |
461 | if (r < 0 && r != -EPERM) { /* EPERM indicates fds that aren't pollable, which is OK */ | |
462 | free(fs->fdname); | |
463 | free(fs); | |
464 | return r; | |
465 | } else if (r >= 0) | |
466 | (void) sd_event_source_set_description(fs->event_source, "service-fd-store"); | |
467 | } | |
7dfbe2e3 | 468 | |
2339fc93 LP |
469 | LIST_PREPEND(fd_store, s->fd_store, fs); |
470 | s->n_fd_store++; | |
471 | ||
9021ff17 | 472 | return 1; /* fd newly stored */ |
2339fc93 LP |
473 | } |
474 | ||
cb5a46b8 | 475 | static int service_add_fd_store_set(Service *s, FDSet *fds, const char *name, bool do_poll) { |
2339fc93 LP |
476 | int r; |
477 | ||
478 | assert(s); | |
479 | ||
b0924635 | 480 | while (fdset_size(fds) > 0) { |
2339fc93 LP |
481 | _cleanup_close_ int fd = -1; |
482 | ||
483 | fd = fdset_steal_first(fds); | |
484 | if (fd < 0) | |
485 | break; | |
486 | ||
cb5a46b8 | 487 | r = service_add_fd_store(s, fd, name, do_poll); |
b0924635 ZJS |
488 | if (r == -EXFULL) |
489 | return log_unit_warning_errno(UNIT(s), r, | |
490 | "Cannot store more fds than FileDescriptorStoreMax=%u, closing remaining.", | |
491 | s->n_fd_store_max); | |
2339fc93 | 492 | if (r < 0) |
b0924635 | 493 | return log_unit_error_errno(UNIT(s), r, "Failed to add fd to store: %m"); |
9021ff17 | 494 | if (r > 0) |
16f70d63 | 495 | log_unit_debug(UNIT(s), "Added fd %u (%s) to fd store.", fd, strna(name)); |
9021ff17 | 496 | fd = -1; |
2339fc93 LP |
497 | } |
498 | ||
2339fc93 LP |
499 | return 0; |
500 | } | |
501 | ||
e78ee06d LP |
502 | static void service_remove_fd_store(Service *s, const char *name) { |
503 | ServiceFDStore *fs, *n; | |
504 | ||
505 | assert(s); | |
506 | assert(name); | |
507 | ||
508 | LIST_FOREACH_SAFE(fd_store, fs, n, s->fd_store) { | |
509 | if (!streq(fs->fdname, name)) | |
510 | continue; | |
511 | ||
512 | log_unit_debug(UNIT(s), "Got explicit request to remove fd %i (%s), closing.", fs->fd, name); | |
513 | service_fd_store_unlink(fs); | |
514 | } | |
515 | } | |
516 | ||
718db961 LP |
517 | static int service_arm_timer(Service *s, usec_t usec) { |
518 | int r; | |
519 | ||
520 | assert(s); | |
521 | ||
718db961 | 522 | if (s->timer_event_source) { |
36c16a7c | 523 | r = sd_event_source_set_time(s->timer_event_source, usec); |
718db961 LP |
524 | if (r < 0) |
525 | return r; | |
526 | ||
527 | return sd_event_source_set_enabled(s->timer_event_source, SD_EVENT_ONESHOT); | |
528 | } | |
529 | ||
36c16a7c LP |
530 | if (usec == USEC_INFINITY) |
531 | return 0; | |
532 | ||
7dfbe2e3 | 533 | r = sd_event_add_time( |
6a0f1f6d LP |
534 | UNIT(s)->manager->event, |
535 | &s->timer_event_source, | |
536 | CLOCK_MONOTONIC, | |
36c16a7c | 537 | usec, 0, |
6a0f1f6d | 538 | service_dispatch_timer, s); |
7dfbe2e3 TG |
539 | if (r < 0) |
540 | return r; | |
541 | ||
542 | (void) sd_event_source_set_description(s->timer_event_source, "service-timer"); | |
543 | ||
544 | return 0; | |
44d8db9e LP |
545 | } |
546 | ||
243b1432 LP |
547 | static int service_verify(Service *s) { |
548 | assert(s); | |
e0cfed4c | 549 | assert(UNIT(s)->load_state == UNIT_LOADED); |
243b1432 | 550 | |
d85ff944 YW |
551 | if (!s->exec_command[SERVICE_EXEC_START] && !s->exec_command[SERVICE_EXEC_STOP] && |
552 | UNIT(s)->success_action == EMERGENCY_ACTION_NONE) | |
3f00d379 ZJS |
553 | /* FailureAction= only makes sense if one of the start or stop commands is specified. |
554 | * SuccessAction= will be executed unconditionally if no commands are specified. Hence, | |
555 | * either a command or SuccessAction= are required. */ | |
556 | ||
d85ff944 | 557 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENOEXEC), "Service has no ExecStart=, ExecStop=, or SuccessAction=. Refusing."); |
243b1432 | 558 | |
d85ff944 YW |
559 | if (s->type != SERVICE_ONESHOT && !s->exec_command[SERVICE_EXEC_START]) |
560 | 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 | 561 | |
d85ff944 YW |
562 | if (!s->remain_after_exit && !s->exec_command[SERVICE_EXEC_START] && UNIT(s)->success_action == EMERGENCY_ACTION_NONE) |
563 | 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 | 564 | |
d85ff944 YW |
565 | if (s->type != SERVICE_ONESHOT && s->exec_command[SERVICE_EXEC_START]->command_next) |
566 | 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 | 567 | |
d85ff944 YW |
568 | if (s->type == SERVICE_ONESHOT && |
569 | !IN_SET(s->restart, SERVICE_RESTART_NO, SERVICE_RESTART_ON_FAILURE, SERVICE_RESTART_ON_ABNORMAL, SERVICE_RESTART_ON_WATCHDOG, SERVICE_RESTART_ON_ABORT)) | |
570 | 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 | 571 | |
d85ff944 YW |
572 | if (s->type == SERVICE_ONESHOT && !exit_status_set_is_empty(&s->restart_force_status)) |
573 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENOEXEC), "Service has RestartForceStatus= set, which isn't allowed for Type=oneshot services. Refusing."); | |
b0693d30 | 574 | |
d85ff944 YW |
575 | if (s->type == SERVICE_DBUS && !s->bus_name) |
576 | 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 | 577 | |
d85ff944 YW |
578 | if (s->exec_context.pam_name && !IN_SET(s->kill_context.kill_mode, KILL_CONTROL_GROUP, KILL_MIXED)) |
579 | 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 | 580 | |
6b7e5923 PS |
581 | if (s->usb_function_descriptors && !s->usb_function_strings) |
582 | log_unit_warning(UNIT(s), "Service has USBFunctionDescriptors= setting, but no USBFunctionStrings=. Ignoring."); | |
583 | ||
584 | if (!s->usb_function_descriptors && s->usb_function_strings) | |
585 | log_unit_warning(UNIT(s), "Service has USBFunctionStrings= setting, but no USBFunctionDescriptors=. Ignoring."); | |
586 | ||
36c16a7c | 587 | if (s->runtime_max_usec != USEC_INFINITY && s->type == SERVICE_ONESHOT) |
226a08f2 | 588 | log_unit_warning(UNIT(s), "RuntimeMaxSec= has no effect in combination with Type=oneshot. Ignoring."); |
36c16a7c | 589 | |
243b1432 LP |
590 | return 0; |
591 | } | |
592 | ||
a40eb732 LP |
593 | static int service_add_default_dependencies(Service *s) { |
594 | int r; | |
595 | ||
596 | assert(s); | |
597 | ||
45f06b34 LP |
598 | if (!UNIT(s)->default_dependencies) |
599 | return 0; | |
600 | ||
a40eb732 LP |
601 | /* Add a number of automatic dependencies useful for the |
602 | * majority of services. */ | |
603 | ||
463d0d15 | 604 | if (MANAGER_IS_SYSTEM(UNIT(s)->manager)) { |
cb4c247d LP |
605 | /* First, pull in the really early boot stuff, and |
606 | * require it, so that we fail if we can't acquire | |
607 | * it. */ | |
608 | ||
5a724170 | 609 | r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
cb4c247d LP |
610 | if (r < 0) |
611 | return r; | |
612 | } else { | |
613 | ||
614 | /* In the --user instance there's no sysinit.target, | |
615 | * in that case require basic.target instead. */ | |
616 | ||
35d8c19a | 617 | r = unit_add_dependency_by_name(UNIT(s), UNIT_REQUIRES, SPECIAL_BASIC_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
cb4c247d LP |
618 | if (r < 0) |
619 | return r; | |
620 | } | |
621 | ||
622 | /* Second, if the rest of the base system is in the same | |
623 | * transaction, order us after it, but do not pull it in or | |
624 | * even require it. */ | |
35d8c19a | 625 | r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_BASIC_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
fccd44ec KS |
626 | if (r < 0) |
627 | return r; | |
a40eb732 | 628 | |
cb4c247d | 629 | /* Third, add us in for normal shutdown. */ |
5a724170 | 630 | return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
a40eb732 LP |
631 | } |
632 | ||
3b7f79dc | 633 | static void service_fix_stdio(Service *s) { |
4dfc092a LP |
634 | assert(s); |
635 | ||
3b7f79dc LP |
636 | /* Note that EXEC_INPUT_NULL and EXEC_OUTPUT_INHERIT play a special role here: they are both the |
637 | * default value that is subject to automatic overriding triggered by other settings and an explicit | |
162392b7 | 638 | * choice the user can make. We don't distinguish between these cases currently. */ |
3b7f79dc LP |
639 | |
640 | if (s->exec_context.std_input == EXEC_INPUT_NULL && | |
641 | s->exec_context.stdin_data_size > 0) | |
642 | s->exec_context.std_input = EXEC_INPUT_DATA; | |
643 | ||
644 | if (IN_SET(s->exec_context.std_input, | |
645 | EXEC_INPUT_TTY, | |
646 | EXEC_INPUT_TTY_FORCE, | |
647 | EXEC_INPUT_TTY_FAIL, | |
648 | EXEC_INPUT_SOCKET, | |
649 | EXEC_INPUT_NAMED_FD)) | |
650 | return; | |
651 | ||
652 | /* We assume these listed inputs refer to bidirectional streams, and hence duplicating them from | |
653 | * stdin to stdout/stderr makes sense and hence leaving EXEC_OUTPUT_INHERIT in place makes sense, | |
654 | * too. Outputs such as regular files or sealed data memfds otoh don't really make sense to be | |
655 | * duplicated for both input and output at the same time (since they then would cause a feedback | |
656 | * loop), hence override EXEC_OUTPUT_INHERIT with the default stderr/stdout setting. */ | |
4dfc092a LP |
657 | |
658 | if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT && | |
3b7f79dc | 659 | s->exec_context.std_output == EXEC_OUTPUT_INHERIT) |
1124fe6f | 660 | s->exec_context.std_error = UNIT(s)->manager->default_std_error; |
4dfc092a | 661 | |
3b7f79dc | 662 | if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT) |
1124fe6f | 663 | s->exec_context.std_output = UNIT(s)->manager->default_std_output; |
4dfc092a LP |
664 | } |
665 | ||
45f06b34 LP |
666 | static int service_setup_bus_name(Service *s) { |
667 | int r; | |
668 | ||
669 | assert(s); | |
670 | ||
0f97b7c3 YW |
671 | /* If s->bus_name is not set, then the unit will be refused by service_verify() later. */ |
672 | if (s->type != SERVICE_DBUS || !s->bus_name) | |
45f06b34 LP |
673 | return 0; |
674 | ||
35d8c19a | 675 | r = unit_add_dependency_by_name(UNIT(s), UNIT_REQUIRES, SPECIAL_DBUS_SOCKET, true, UNIT_DEPENDENCY_FILE); |
222953e8 DR |
676 | if (r < 0) |
677 | return log_unit_error_errno(UNIT(s), r, "Failed to add dependency on " SPECIAL_DBUS_SOCKET ": %m"); | |
45f06b34 | 678 | |
a132bef0 | 679 | /* We always want to be ordered against dbus.socket if both are in the transaction. */ |
35d8c19a | 680 | r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_DBUS_SOCKET, true, UNIT_DEPENDENCY_FILE); |
45f06b34 | 681 | if (r < 0) |
92bed462 | 682 | return log_unit_error_errno(UNIT(s), r, "Failed to add dependency on " SPECIAL_DBUS_SOCKET ": %m"); |
45f06b34 LP |
683 | |
684 | r = unit_watch_bus_name(UNIT(s), s->bus_name); | |
685 | if (r == -EEXIST) | |
686 | return log_unit_error_errno(UNIT(s), r, "Two services allocated for the same bus name %s, refusing operation.", s->bus_name); | |
687 | if (r < 0) | |
688 | return log_unit_error_errno(UNIT(s), r, "Cannot watch bus name %s: %m", s->bus_name); | |
689 | ||
690 | return 0; | |
691 | } | |
692 | ||
8545f7ce LP |
693 | static int service_add_extras(Service *s) { |
694 | int r; | |
695 | ||
696 | assert(s); | |
697 | ||
698 | if (s->type == _SERVICE_TYPE_INVALID) { | |
699 | /* Figure out a type automatically */ | |
700 | if (s->bus_name) | |
701 | s->type = SERVICE_DBUS; | |
702 | else if (s->exec_command[SERVICE_EXEC_START]) | |
703 | s->type = SERVICE_SIMPLE; | |
704 | else | |
705 | s->type = SERVICE_ONESHOT; | |
706 | } | |
707 | ||
708 | /* Oneshot services have disabled start timeout by default */ | |
709 | if (s->type == SERVICE_ONESHOT && !s->start_timeout_defined) | |
36c16a7c | 710 | s->timeout_start_usec = USEC_INFINITY; |
8545f7ce | 711 | |
3b7f79dc | 712 | service_fix_stdio(s); |
8545f7ce LP |
713 | |
714 | r = unit_patch_contexts(UNIT(s)); | |
715 | if (r < 0) | |
716 | return r; | |
717 | ||
718 | r = unit_add_exec_dependencies(UNIT(s), &s->exec_context); | |
719 | if (r < 0) | |
720 | return r; | |
721 | ||
d79200e2 | 722 | r = unit_set_default_slice(UNIT(s)); |
8545f7ce LP |
723 | if (r < 0) |
724 | return r; | |
725 | ||
4330dc03 AJ |
726 | /* If the service needs the notify socket, let's enable it automatically. */ |
727 | if (s->notify_access == NOTIFY_NONE && | |
728 | (s->type == SERVICE_NOTIFY || s->watchdog_usec > 0 || s->n_fd_store_max > 0)) | |
8545f7ce LP |
729 | s->notify_access = NOTIFY_MAIN; |
730 | ||
afcfaa69 LP |
731 | /* If no OOM policy was explicitly set, then default to the configure default OOM policy. Except when |
732 | * delegation is on, in that case it we assume the payload knows better what to do and can process | |
5238e957 | 733 | * things in a more focused way. */ |
afcfaa69 LP |
734 | if (s->oom_policy < 0) |
735 | s->oom_policy = s->cgroup_context.delegate ? OOM_CONTINUE : UNIT(s)->manager->default_oom_policy; | |
736 | ||
737 | /* Let the kernel do the killing if that's requested. */ | |
738 | s->cgroup_context.memory_oom_group = s->oom_policy == OOM_KILL; | |
739 | ||
45f06b34 LP |
740 | r = service_add_default_dependencies(s); |
741 | if (r < 0) | |
742 | return r; | |
8545f7ce | 743 | |
45f06b34 LP |
744 | r = service_setup_bus_name(s); |
745 | if (r < 0) | |
746 | return r; | |
8545f7ce LP |
747 | |
748 | return 0; | |
749 | } | |
750 | ||
e537352b | 751 | static int service_load(Unit *u) { |
e537352b | 752 | Service *s = SERVICE(u); |
8bb2d17d | 753 | int r; |
e537352b | 754 | |
e0cfed4c | 755 | r = unit_load_fragment_and_dropin(u, true); |
c2756a68 | 756 | if (r < 0) |
5cb5a6ff LP |
757 | return r; |
758 | ||
e0cfed4c ZJS |
759 | if (u->load_state != UNIT_LOADED) |
760 | return 0; | |
034c6ed7 | 761 | |
23a177ef | 762 | /* This is a new unit? Then let's add in some extras */ |
e0cfed4c ZJS |
763 | r = service_add_extras(s); |
764 | if (r < 0) | |
765 | return r; | |
8e274523 | 766 | |
243b1432 | 767 | return service_verify(s); |
034c6ed7 LP |
768 | } |
769 | ||
87f0e418 | 770 | static void service_dump(Unit *u, FILE *f, const char *prefix) { |
5cb5a6ff | 771 | ServiceExecCommand c; |
87f0e418 | 772 | Service *s = SERVICE(u); |
47be870b | 773 | const char *prefix2; |
5cb5a6ff LP |
774 | |
775 | assert(s); | |
776 | ||
4c940960 | 777 | prefix = strempty(prefix); |
63c372cb | 778 | prefix2 = strjoina(prefix, "\t"); |
44d8db9e | 779 | |
5cb5a6ff | 780 | fprintf(f, |
81a2b7ce | 781 | "%sService State: %s\n" |
f42806df LP |
782 | "%sResult: %s\n" |
783 | "%sReload Result: %s\n" | |
4c2f5842 | 784 | "%sClean Result: %s\n" |
81a2b7ce | 785 | "%sPermissionsStartOnly: %s\n" |
8e274523 | 786 | "%sRootDirectoryStartOnly: %s\n" |
02ee865a | 787 | "%sRemainAfterExit: %s\n" |
3185a36b | 788 | "%sGuessMainPID: %s\n" |
c952c6ec | 789 | "%sType: %s\n" |
2cf3143a | 790 | "%sRestart: %s\n" |
308d72dc | 791 | "%sNotifyAccess: %s\n" |
afcfaa69 LP |
792 | "%sNotifyState: %s\n" |
793 | "%sOOMPolicy: %s\n", | |
81a2b7ce | 794 | prefix, service_state_to_string(s->state), |
f42806df LP |
795 | prefix, service_result_to_string(s->result), |
796 | prefix, service_result_to_string(s->reload_result), | |
4c2f5842 | 797 | prefix, service_result_to_string(s->clean_result), |
81a2b7ce | 798 | prefix, yes_no(s->permissions_start_only), |
8e274523 | 799 | prefix, yes_no(s->root_directory_start_only), |
02ee865a | 800 | prefix, yes_no(s->remain_after_exit), |
3185a36b | 801 | prefix, yes_no(s->guess_main_pid), |
c952c6ec | 802 | prefix, service_type_to_string(s->type), |
2cf3143a | 803 | prefix, service_restart_to_string(s->restart), |
308d72dc | 804 | prefix, notify_access_to_string(s->notify_access), |
afcfaa69 LP |
805 | prefix, notify_state_to_string(s->notify_state), |
806 | prefix, oom_policy_to_string(s->oom_policy)); | |
5cb5a6ff | 807 | |
70123e68 LP |
808 | if (s->control_pid > 0) |
809 | fprintf(f, | |
ccd06097 ZJS |
810 | "%sControl PID: "PID_FMT"\n", |
811 | prefix, s->control_pid); | |
70123e68 LP |
812 | |
813 | if (s->main_pid > 0) | |
814 | fprintf(f, | |
ccd06097 | 815 | "%sMain PID: "PID_FMT"\n" |
6dfa5494 LP |
816 | "%sMain PID Known: %s\n" |
817 | "%sMain PID Alien: %s\n", | |
ccd06097 | 818 | prefix, s->main_pid, |
6dfa5494 LP |
819 | prefix, yes_no(s->main_pid_known), |
820 | prefix, yes_no(s->main_pid_alien)); | |
70123e68 | 821 | |
034c6ed7 LP |
822 | if (s->pid_file) |
823 | fprintf(f, | |
824 | "%sPIDFile: %s\n", | |
825 | prefix, s->pid_file); | |
826 | ||
05e343b7 LP |
827 | if (s->bus_name) |
828 | fprintf(f, | |
829 | "%sBusName: %s\n" | |
830 | "%sBus Name Good: %s\n", | |
831 | prefix, s->bus_name, | |
832 | prefix, yes_no(s->bus_name_good)); | |
833 | ||
9dfb64f8 ZJS |
834 | if (UNIT_ISSET(s->accept_socket)) |
835 | fprintf(f, | |
836 | "%sAccept Socket: %s\n", | |
837 | prefix, UNIT_DEREF(s->accept_socket)->id); | |
838 | ||
c9d41699 YW |
839 | fprintf(f, |
840 | "%sRestartSec: %s\n" | |
841 | "%sTimeoutStartSec: %s\n" | |
bf760801 JK |
842 | "%sTimeoutStopSec: %s\n" |
843 | "%sTimeoutStartFailureMode: %s\n" | |
844 | "%sTimeoutStopFailureMode: %s\n", | |
5291f26d ZJS |
845 | prefix, FORMAT_TIMESPAN(s->restart_usec, USEC_PER_SEC), |
846 | prefix, FORMAT_TIMESPAN(s->timeout_start_usec, USEC_PER_SEC), | |
847 | prefix, FORMAT_TIMESPAN(s->timeout_stop_usec, USEC_PER_SEC), | |
bf760801 JK |
848 | prefix, service_timeout_failure_mode_to_string(s->timeout_start_failure_mode), |
849 | prefix, service_timeout_failure_mode_to_string(s->timeout_stop_failure_mode)); | |
dcab85be YW |
850 | |
851 | if (s->timeout_abort_set) | |
852 | fprintf(f, | |
853 | "%sTimeoutAbortSec: %s\n", | |
5291f26d | 854 | prefix, FORMAT_TIMESPAN(s->timeout_abort_usec, USEC_PER_SEC)); |
dcab85be YW |
855 | |
856 | fprintf(f, | |
857 | "%sRuntimeMaxSec: %s\n" | |
858 | "%sWatchdogSec: %s\n", | |
5291f26d ZJS |
859 | prefix, FORMAT_TIMESPAN(s->runtime_max_usec, USEC_PER_SEC), |
860 | prefix, FORMAT_TIMESPAN(s->watchdog_usec, USEC_PER_SEC)); | |
c9d41699 | 861 | |
4819ff03 | 862 | kill_context_dump(&s->kill_context, f, prefix); |
5cb5a6ff LP |
863 | exec_context_dump(&s->exec_context, f, prefix); |
864 | ||
e537352b | 865 | for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) { |
5cb5a6ff | 866 | |
44d8db9e LP |
867 | if (!s->exec_command[c]) |
868 | continue; | |
869 | ||
40d50879 | 870 | fprintf(f, "%s-> %s:\n", |
94f04347 | 871 | prefix, service_exec_command_to_string(c)); |
44d8db9e LP |
872 | |
873 | exec_command_dump_list(s->exec_command[c], f, prefix2); | |
5cb5a6ff | 874 | } |
44d8db9e | 875 | |
8c47c732 LP |
876 | if (s->status_text) |
877 | fprintf(f, "%sStatus Text: %s\n", | |
878 | prefix, s->status_text); | |
a354329f | 879 | |
ece174c5 | 880 | if (s->n_fd_store_max > 0) |
a354329f LP |
881 | fprintf(f, |
882 | "%sFile Descriptor Store Max: %u\n" | |
da6053d0 | 883 | "%sFile Descriptor Store Current: %zu\n", |
a354329f LP |
884 | prefix, s->n_fd_store_max, |
885 | prefix, s->n_fd_store); | |
18f573aa | 886 | |
bc0623df | 887 | cgroup_context_dump(UNIT(s), f, prefix); |
5cb5a6ff LP |
888 | } |
889 | ||
db256aab LP |
890 | static int service_is_suitable_main_pid(Service *s, pid_t pid, int prio) { |
891 | Unit *owner; | |
892 | ||
893 | assert(s); | |
894 | assert(pid_is_valid(pid)); | |
895 | ||
896 | /* Checks whether the specified PID is suitable as main PID for this service. returns negative if not, 0 if the | |
897 | * PID is questionnable but should be accepted if the source of configuration is trusted. > 0 if the PID is | |
898 | * good */ | |
899 | ||
d85ff944 YW |
900 | if (pid == getpid_cached() || pid == 1) |
901 | return log_unit_full_errno(UNIT(s), prio, SYNTHETIC_ERRNO(EPERM), "New main PID "PID_FMT" is the manager, refusing.", pid); | |
db256aab | 902 | |
d85ff944 YW |
903 | if (pid == s->control_pid) |
904 | return log_unit_full_errno(UNIT(s), prio, SYNTHETIC_ERRNO(EPERM), "New main PID "PID_FMT" is the control process, refusing.", pid); | |
db256aab | 905 | |
d85ff944 YW |
906 | if (!pid_is_alive(pid)) |
907 | 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 |
908 | |
909 | owner = manager_get_unit_by_pid(UNIT(s)->manager, pid); | |
910 | if (owner == UNIT(s)) { | |
911 | log_unit_debug(UNIT(s), "New main PID "PID_FMT" belongs to service, we are happy.", pid); | |
912 | return 1; /* Yay, it's definitely a good PID */ | |
913 | } | |
914 | ||
915 | return 0; /* Hmm it's a suspicious PID, let's accept it if configuration source is trusted */ | |
916 | } | |
917 | ||
c5419d42 | 918 | static int service_load_pid_file(Service *s, bool may_warn) { |
73969ab6 | 919 | bool questionable_pid_file = false; |
7fd1b19b | 920 | _cleanup_free_ char *k = NULL; |
db256aab LP |
921 | _cleanup_close_ int fd = -1; |
922 | int r, prio; | |
5925dd3c | 923 | pid_t pid; |
034c6ed7 LP |
924 | |
925 | assert(s); | |
926 | ||
034c6ed7 | 927 | if (!s->pid_file) |
13230d5d | 928 | return -ENOENT; |
034c6ed7 | 929 | |
db256aab LP |
930 | prio = may_warn ? LOG_INFO : LOG_DEBUG; |
931 | ||
a5648b80 ZJS |
932 | r = chase_symlinks(s->pid_file, NULL, CHASE_SAFE, NULL, &fd); |
933 | if (r == -ENOLINK) { | |
8ed6f81b YW |
934 | log_unit_debug_errno(UNIT(s), r, |
935 | "Potentially unsafe symlink chain, will now retry with relaxed checks: %s", s->pid_file); | |
73969ab6 LP |
936 | |
937 | questionable_pid_file = true; | |
938 | ||
a5648b80 | 939 | r = chase_symlinks(s->pid_file, NULL, 0, NULL, &fd); |
73969ab6 | 940 | } |
a5648b80 | 941 | if (r < 0) |
8ed6f81b YW |
942 | return log_unit_full_errno(UNIT(s), prio, fd, |
943 | "Can't open PID file %s (yet?) after %s: %m", s->pid_file, service_state_to_string(s->state)); | |
db256aab | 944 | |
a5648b80 ZJS |
945 | /* Let's read the PID file now that we chased it down. But we need to convert the O_PATH fd |
946 | * chase_symlinks() returned us into a proper fd first. */ | |
ddb6eeaf | 947 | r = read_one_line_file(FORMAT_PROC_FD_PATH(fd), &k); |
db256aab | 948 | if (r < 0) |
a5648b80 ZJS |
949 | return log_unit_error_errno(UNIT(s), r, |
950 | "Can't convert PID files %s O_PATH file descriptor to proper file descriptor: %m", | |
951 | s->pid_file); | |
034c6ed7 | 952 | |
5925dd3c | 953 | r = parse_pid(k, &pid); |
db256aab | 954 | if (r < 0) |
8ed6f81b | 955 | return log_unit_full_errno(UNIT(s), prio, r, "Failed to parse PID from file %s: %m", s->pid_file); |
db256aab LP |
956 | |
957 | if (s->main_pid_known && pid == s->main_pid) | |
958 | return 0; | |
959 | ||
960 | r = service_is_suitable_main_pid(s, pid, prio); | |
961 | if (r < 0) | |
5925dd3c | 962 | return r; |
db256aab LP |
963 | if (r == 0) { |
964 | struct stat st; | |
406eaf93 | 965 | |
d85ff944 YW |
966 | if (questionable_pid_file) |
967 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(EPERM), | |
968 | "Refusing to accept PID outside of service control group, acquired through unsafe symlink chain: %s", s->pid_file); | |
73969ab6 | 969 | |
db256aab LP |
970 | /* Hmm, it's not clear if the new main PID is safe. Let's allow this if the PID file is owned by root */ |
971 | ||
972 | if (fstat(fd, &st) < 0) | |
973 | return log_unit_error_errno(UNIT(s), errno, "Failed to fstat() PID file O_PATH fd: %m"); | |
974 | ||
d85ff944 YW |
975 | if (st.st_uid != 0) |
976 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(EPERM), | |
977 | "New main PID "PID_FMT" does not belong to service, and PID file is not owned by root. Refusing.", pid); | |
db256aab LP |
978 | |
979 | 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 |
980 | } |
981 | ||
db01f8b3 | 982 | if (s->main_pid_known) { |
f2341e0a | 983 | log_unit_debug(UNIT(s), "Main PID changing: "PID_FMT" -> "PID_FMT, s->main_pid, pid); |
8bb2d17d | 984 | |
db01f8b3 MS |
985 | service_unwatch_main_pid(s); |
986 | s->main_pid_known = false; | |
3a111838 | 987 | } else |
f2341e0a | 988 | log_unit_debug(UNIT(s), "Main PID loaded: "PID_FMT, pid); |
db01f8b3 | 989 | |
117dcc57 ZJS |
990 | r = service_set_main_pid(s, pid); |
991 | if (r < 0) | |
16f6025e LP |
992 | return r; |
993 | ||
f75f613d | 994 | r = unit_watch_pid(UNIT(s), pid, false); |
e8b509d3 LP |
995 | if (r < 0) /* FIXME: we need to do something here */ |
996 | return log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" for service: %m", pid); | |
034c6ed7 | 997 | |
db256aab | 998 | return 1; |
034c6ed7 LP |
999 | } |
1000 | ||
783e05d6 | 1001 | static void service_search_main_pid(Service *s) { |
efdb0237 | 1002 | pid_t pid = 0; |
4fbf50b3 LP |
1003 | int r; |
1004 | ||
1005 | assert(s); | |
1006 | ||
2aed63f4 | 1007 | /* If we know it anyway, don't ever fall back to unreliable |
3185a36b | 1008 | * heuristics */ |
4fbf50b3 | 1009 | if (s->main_pid_known) |
783e05d6 | 1010 | return; |
4fbf50b3 | 1011 | |
3185a36b | 1012 | if (!s->guess_main_pid) |
783e05d6 | 1013 | return; |
3185a36b | 1014 | |
4fbf50b3 LP |
1015 | assert(s->main_pid <= 0); |
1016 | ||
783e05d6 ZJS |
1017 | if (unit_search_main_pid(UNIT(s), &pid) < 0) |
1018 | return; | |
4fbf50b3 | 1019 | |
f2341e0a | 1020 | log_unit_debug(UNIT(s), "Main PID guessed: "PID_FMT, pid); |
783e05d6 ZJS |
1021 | if (service_set_main_pid(s, pid) < 0) |
1022 | return; | |
4fbf50b3 | 1023 | |
f75f613d | 1024 | r = unit_watch_pid(UNIT(s), pid, false); |
783e05d6 | 1025 | if (r < 0) |
4fbf50b3 | 1026 | /* FIXME: we need to do something here */ |
f2341e0a | 1027 | log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" from: %m", pid); |
4fbf50b3 LP |
1028 | } |
1029 | ||
034c6ed7 LP |
1030 | static void service_set_state(Service *s, ServiceState state) { |
1031 | ServiceState old_state; | |
e056b01d | 1032 | const UnitActiveState *table; |
842129f5 | 1033 | |
5cb5a6ff LP |
1034 | assert(s); |
1035 | ||
6fcbec6f LP |
1036 | if (s->state != state) |
1037 | bus_unit_send_pending_change_signal(UNIT(s), false); | |
1038 | ||
e056b01d LP |
1039 | table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
1040 | ||
034c6ed7 | 1041 | old_state = s->state; |
5cb5a6ff | 1042 | s->state = state; |
034c6ed7 | 1043 | |
3a111838 MS |
1044 | service_unwatch_pid_file(s); |
1045 | ||
842129f5 | 1046 | if (!IN_SET(state, |
31cd5f63 | 1047 | SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, |
36c16a7c | 1048 | SERVICE_RUNNING, |
842129f5 | 1049 | SERVICE_RELOAD, |
c87700a1 | 1050 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 1051 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL, |
4c2f5842 LP |
1052 | SERVICE_AUTO_RESTART, |
1053 | SERVICE_CLEANING)) | |
5dcadb4c | 1054 | s->timer_event_source = sd_event_source_disable_unref(s->timer_event_source); |
034c6ed7 | 1055 | |
842129f5 LP |
1056 | if (!IN_SET(state, |
1057 | SERVICE_START, SERVICE_START_POST, | |
1058 | SERVICE_RUNNING, SERVICE_RELOAD, | |
c87700a1 | 1059 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 1060 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
5e94833f | 1061 | service_unwatch_main_pid(s); |
867b3b7d LP |
1062 | s->main_command = NULL; |
1063 | } | |
034c6ed7 | 1064 | |
842129f5 | 1065 | if (!IN_SET(state, |
31cd5f63 | 1066 | SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, |
842129f5 | 1067 | SERVICE_RELOAD, |
c87700a1 | 1068 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 1069 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL, |
4c2f5842 | 1070 | SERVICE_CLEANING)) { |
5e94833f | 1071 | service_unwatch_control_pid(s); |
034c6ed7 | 1072 | s->control_command = NULL; |
a16e1123 | 1073 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; |
e537352b | 1074 | } |
034c6ed7 | 1075 | |
50be4f4a | 1076 | if (IN_SET(state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART)) { |
a911bb9a | 1077 | unit_unwatch_all_pids(UNIT(s)); |
50be4f4a LP |
1078 | unit_dequeue_rewatch_pids(UNIT(s)); |
1079 | } | |
a911bb9a | 1080 | |
842129f5 | 1081 | if (!IN_SET(state, |
31cd5f63 | 1082 | SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, |
842129f5 | 1083 | SERVICE_RUNNING, SERVICE_RELOAD, |
c87700a1 | 1084 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 1085 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL) && |
5cc3985e | 1086 | !(state == SERVICE_DEAD && UNIT(s)->job)) |
4f2d528d LP |
1087 | service_close_socket_fd(s); |
1088 | ||
5686391b | 1089 | if (state != SERVICE_START) |
5dcadb4c | 1090 | s->exec_fd_event_source = sd_event_source_disable_unref(s->exec_fd_event_source); |
5686391b | 1091 | |
7596e9e1 | 1092 | if (!IN_SET(state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
a6927d7f MO |
1093 | service_stop_watchdog(s); |
1094 | ||
f6023656 LP |
1095 | /* For the inactive states unit_notify() will trim the cgroup, |
1096 | * but for exit we have to do that ourselves... */ | |
2c289ea8 | 1097 | if (state == SERVICE_EXITED && !MANAGER_IS_RELOADING(UNIT(s)->manager)) |
efdb0237 | 1098 | unit_prune_cgroup(UNIT(s)); |
f6023656 | 1099 | |
e537352b | 1100 | if (old_state != state) |
f2341e0a | 1101 | log_unit_debug(UNIT(s), "Changed %s -> %s", service_state_to_string(old_state), service_state_to_string(state)); |
acbb0225 | 1102 | |
2ad2e41a LP |
1103 | unit_notify(UNIT(s), table[old_state], table[state], |
1104 | (s->reload_result == SERVICE_SUCCESS ? 0 : UNIT_NOTIFY_RELOAD_FAILURE) | | |
42e6f549 | 1105 | (s->will_auto_restart ? UNIT_NOTIFY_WILL_AUTO_RESTART : 0)); |
034c6ed7 LP |
1106 | } |
1107 | ||
36c16a7c LP |
1108 | static usec_t service_coldplug_timeout(Service *s) { |
1109 | assert(s); | |
1110 | ||
1111 | switch (s->deserialized_state) { | |
1112 | ||
31cd5f63 | 1113 | case SERVICE_CONDITION: |
36c16a7c LP |
1114 | case SERVICE_START_PRE: |
1115 | case SERVICE_START: | |
1116 | case SERVICE_START_POST: | |
1117 | case SERVICE_RELOAD: | |
1118 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->timeout_start_usec); | |
1119 | ||
1120 | case SERVICE_RUNNING: | |
1121 | return usec_add(UNIT(s)->active_enter_timestamp.monotonic, s->runtime_max_usec); | |
1122 | ||
1123 | case SERVICE_STOP: | |
36c16a7c LP |
1124 | case SERVICE_STOP_SIGTERM: |
1125 | case SERVICE_STOP_SIGKILL: | |
1126 | case SERVICE_STOP_POST: | |
1127 | case SERVICE_FINAL_SIGTERM: | |
1128 | case SERVICE_FINAL_SIGKILL: | |
1129 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->timeout_stop_usec); | |
1130 | ||
dc653bf4 | 1131 | case SERVICE_STOP_WATCHDOG: |
bf760801 | 1132 | case SERVICE_FINAL_WATCHDOG: |
dc653bf4 JK |
1133 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, service_timeout_abort_usec(s)); |
1134 | ||
36c16a7c LP |
1135 | case SERVICE_AUTO_RESTART: |
1136 | return usec_add(UNIT(s)->inactive_enter_timestamp.monotonic, s->restart_usec); | |
1137 | ||
4c2f5842 | 1138 | case SERVICE_CLEANING: |
12213aed | 1139 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->exec_context.timeout_clean_usec); |
4c2f5842 | 1140 | |
36c16a7c LP |
1141 | default: |
1142 | return USEC_INFINITY; | |
1143 | } | |
1144 | } | |
1145 | ||
be847e82 | 1146 | static int service_coldplug(Unit *u) { |
a16e1123 LP |
1147 | Service *s = SERVICE(u); |
1148 | int r; | |
1149 | ||
1150 | assert(s); | |
1151 | assert(s->state == SERVICE_DEAD); | |
1152 | ||
930d2838 LP |
1153 | if (s->deserialized_state == s->state) |
1154 | return 0; | |
6c12b52e | 1155 | |
36c16a7c LP |
1156 | r = service_arm_timer(s, service_coldplug_timeout(s)); |
1157 | if (r < 0) | |
1158 | return r; | |
a911bb9a | 1159 | |
930d2838 LP |
1160 | if (s->main_pid > 0 && |
1161 | pid_is_unwaited(s->main_pid) && | |
9acac212 | 1162 | (IN_SET(s->deserialized_state, |
930d2838 LP |
1163 | SERVICE_START, SERVICE_START_POST, |
1164 | SERVICE_RUNNING, SERVICE_RELOAD, | |
c87700a1 | 1165 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 1166 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL))) { |
f75f613d | 1167 | r = unit_watch_pid(UNIT(s), s->main_pid, false); |
930d2838 LP |
1168 | if (r < 0) |
1169 | return r; | |
1170 | } | |
bb242b7b | 1171 | |
930d2838 LP |
1172 | if (s->control_pid > 0 && |
1173 | pid_is_unwaited(s->control_pid) && | |
1174 | IN_SET(s->deserialized_state, | |
31cd5f63 | 1175 | SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, |
930d2838 | 1176 | SERVICE_RELOAD, |
c87700a1 | 1177 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 1178 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL, |
4c2f5842 | 1179 | SERVICE_CLEANING)) { |
f75f613d | 1180 | r = unit_watch_pid(UNIT(s), s->control_pid, false); |
930d2838 LP |
1181 | if (r < 0) |
1182 | return r; | |
a16e1123 | 1183 | } |
92c1622e | 1184 | |
4c2f5842 | 1185 | if (!IN_SET(s->deserialized_state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART, SERVICE_CLEANING)) { |
50be4f4a | 1186 | (void) unit_enqueue_rewatch_pids(u); |
29206d46 | 1187 | (void) unit_setup_dynamic_creds(u); |
e8a565cb YW |
1188 | (void) unit_setup_exec_runtime(u); |
1189 | } | |
29206d46 | 1190 | |
50be4f4a LP |
1191 | if (IN_SET(s->deserialized_state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
1192 | service_start_watchdog(s); | |
1193 | ||
3ebcd323 ZJS |
1194 | if (UNIT_ISSET(s->accept_socket)) { |
1195 | Socket* socket = SOCKET(UNIT_DEREF(s->accept_socket)); | |
1196 | ||
1197 | if (socket->max_connections_per_source > 0) { | |
1198 | SocketPeer *peer; | |
1199 | ||
1200 | /* Make a best-effort attempt at bumping the connection count */ | |
1201 | if (socket_acquire_peer(socket, s->socket_fd, &peer) > 0) { | |
1202 | socket_peer_unref(s->peer); | |
1203 | s->peer = peer; | |
1204 | } | |
1205 | } | |
1206 | } | |
1207 | ||
930d2838 | 1208 | service_set_state(s, s->deserialized_state); |
a16e1123 LP |
1209 | return 0; |
1210 | } | |
1211 | ||
25b583d7 LP |
1212 | static int service_collect_fds( |
1213 | Service *s, | |
1214 | int **fds, | |
1215 | char ***fd_names, | |
1216 | size_t *n_socket_fds, | |
1217 | size_t *n_storage_fds) { | |
4c47affc | 1218 | |
8dd4c05b | 1219 | _cleanup_strv_free_ char **rfd_names = NULL; |
a354329f | 1220 | _cleanup_free_ int *rfds = NULL; |
25b583d7 | 1221 | size_t rn_socket_fds = 0, rn_storage_fds = 0; |
4c47affc | 1222 | int r; |
44d8db9e LP |
1223 | |
1224 | assert(s); | |
1225 | assert(fds); | |
8dd4c05b | 1226 | assert(fd_names); |
9b141911 | 1227 | assert(n_socket_fds); |
25b583d7 | 1228 | assert(n_storage_fds); |
44d8db9e | 1229 | |
8dd4c05b | 1230 | if (s->socket_fd >= 0) { |
6cf6bbc2 | 1231 | |
8dd4c05b | 1232 | /* Pass the per-connection socket */ |
57020a3a | 1233 | |
8dd4c05b LP |
1234 | rfds = new(int, 1); |
1235 | if (!rfds) | |
1236 | return -ENOMEM; | |
1237 | rfds[0] = s->socket_fd; | |
57020a3a | 1238 | |
bea1a013 | 1239 | rfd_names = strv_new("connection"); |
8dd4c05b LP |
1240 | if (!rfd_names) |
1241 | return -ENOMEM; | |
44d8db9e | 1242 | |
4c47affc | 1243 | rn_socket_fds = 1; |
8dd4c05b | 1244 | } else { |
8dd4c05b | 1245 | Unit *u; |
44d8db9e | 1246 | |
8dd4c05b | 1247 | /* Pass all our configured sockets for singleton services */ |
44d8db9e | 1248 | |
15ed3c3a | 1249 | UNIT_FOREACH_DEPENDENCY(u, UNIT(s), UNIT_ATOM_TRIGGERED_BY) { |
8dd4c05b LP |
1250 | _cleanup_free_ int *cfds = NULL; |
1251 | Socket *sock; | |
1252 | int cn_fds; | |
44d8db9e | 1253 | |
8dd4c05b LP |
1254 | if (u->type != UNIT_SOCKET) |
1255 | continue; | |
44d8db9e | 1256 | |
8dd4c05b | 1257 | sock = SOCKET(u); |
a354329f | 1258 | |
8dd4c05b LP |
1259 | cn_fds = socket_collect_fds(sock, &cfds); |
1260 | if (cn_fds < 0) | |
1261 | return cn_fds; | |
44d8db9e | 1262 | |
8dd4c05b LP |
1263 | if (cn_fds <= 0) |
1264 | continue; | |
79c7626d | 1265 | |
8dd4c05b | 1266 | if (!rfds) { |
1cc6c93a | 1267 | rfds = TAKE_PTR(cfds); |
4c47affc | 1268 | rn_socket_fds = cn_fds; |
8dd4c05b LP |
1269 | } else { |
1270 | int *t; | |
1271 | ||
62d74c78 | 1272 | t = reallocarray(rfds, rn_socket_fds + cn_fds, sizeof(int)); |
8dd4c05b LP |
1273 | if (!t) |
1274 | return -ENOMEM; | |
1275 | ||
4c47affc | 1276 | memcpy(t + rn_socket_fds, cfds, cn_fds * sizeof(int)); |
8dd4c05b LP |
1277 | |
1278 | rfds = t; | |
4c47affc | 1279 | rn_socket_fds += cn_fds; |
8dd4c05b LP |
1280 | } |
1281 | ||
1282 | r = strv_extend_n(&rfd_names, socket_fdname(sock), cn_fds); | |
1283 | if (r < 0) | |
1284 | return r; | |
44d8db9e LP |
1285 | } |
1286 | } | |
1287 | ||
a354329f LP |
1288 | if (s->n_fd_store > 0) { |
1289 | ServiceFDStore *fs; | |
25b583d7 | 1290 | size_t n_fds; |
8dd4c05b | 1291 | char **nl; |
a354329f LP |
1292 | int *t; |
1293 | ||
62d74c78 | 1294 | t = reallocarray(rfds, rn_socket_fds + s->n_fd_store, sizeof(int)); |
a354329f LP |
1295 | if (!t) |
1296 | return -ENOMEM; | |
1297 | ||
1298 | rfds = t; | |
8dd4c05b | 1299 | |
62d74c78 | 1300 | nl = reallocarray(rfd_names, rn_socket_fds + s->n_fd_store + 1, sizeof(char *)); |
8dd4c05b LP |
1301 | if (!nl) |
1302 | return -ENOMEM; | |
1303 | ||
1304 | rfd_names = nl; | |
4c47affc | 1305 | n_fds = rn_socket_fds; |
8dd4c05b LP |
1306 | |
1307 | LIST_FOREACH(fd_store, fs, s->fd_store) { | |
4c47affc FB |
1308 | rfds[n_fds] = fs->fd; |
1309 | rfd_names[n_fds] = strdup(strempty(fs->fdname)); | |
1310 | if (!rfd_names[n_fds]) | |
8dd4c05b LP |
1311 | return -ENOMEM; |
1312 | ||
4c47affc FB |
1313 | rn_storage_fds++; |
1314 | n_fds++; | |
8dd4c05b LP |
1315 | } |
1316 | ||
4c47affc | 1317 | rfd_names[n_fds] = NULL; |
a354329f LP |
1318 | } |
1319 | ||
1cc6c93a YW |
1320 | *fds = TAKE_PTR(rfds); |
1321 | *fd_names = TAKE_PTR(rfd_names); | |
9b141911 | 1322 | *n_socket_fds = rn_socket_fds; |
4c47affc | 1323 | *n_storage_fds = rn_storage_fds; |
3e33402a | 1324 | |
4c47affc | 1325 | return 0; |
44d8db9e LP |
1326 | } |
1327 | ||
5686391b LP |
1328 | static int service_allocate_exec_fd_event_source( |
1329 | Service *s, | |
1330 | int fd, | |
1331 | sd_event_source **ret_event_source) { | |
1332 | ||
1333 | _cleanup_(sd_event_source_unrefp) sd_event_source *source = NULL; | |
1334 | int r; | |
1335 | ||
1336 | assert(s); | |
1337 | assert(fd >= 0); | |
1338 | assert(ret_event_source); | |
1339 | ||
1340 | r = sd_event_add_io(UNIT(s)->manager->event, &source, fd, 0, service_dispatch_exec_io, s); | |
1341 | if (r < 0) | |
1342 | return log_unit_error_errno(UNIT(s), r, "Failed to allocate exec_fd event source: %m"); | |
1343 | ||
1344 | /* This is a bit lower priority than SIGCHLD, as that carries a lot more interesting failure information */ | |
1345 | ||
1346 | r = sd_event_source_set_priority(source, SD_EVENT_PRIORITY_NORMAL-3); | |
1347 | if (r < 0) | |
1348 | return log_unit_error_errno(UNIT(s), r, "Failed to adjust priority of exec_fd event source: %m"); | |
1349 | ||
bc989831 | 1350 | (void) sd_event_source_set_description(source, "service exec_fd"); |
5686391b LP |
1351 | |
1352 | r = sd_event_source_set_io_fd_own(source, true); | |
1353 | if (r < 0) | |
1354 | return log_unit_error_errno(UNIT(s), r, "Failed to pass ownership of fd to event source: %m"); | |
1355 | ||
1356 | *ret_event_source = TAKE_PTR(source); | |
1357 | return 0; | |
1358 | } | |
1359 | ||
1360 | static int service_allocate_exec_fd( | |
1361 | Service *s, | |
1362 | sd_event_source **ret_event_source, | |
e78695d4 | 1363 | int *ret_exec_fd) { |
5686391b | 1364 | |
e78695d4 | 1365 | _cleanup_close_pair_ int p[] = { -1, -1 }; |
5686391b LP |
1366 | int r; |
1367 | ||
1368 | assert(s); | |
1369 | assert(ret_event_source); | |
1370 | assert(ret_exec_fd); | |
1371 | ||
1372 | if (pipe2(p, O_CLOEXEC|O_NONBLOCK) < 0) | |
1373 | return log_unit_error_errno(UNIT(s), errno, "Failed to allocate exec_fd pipe: %m"); | |
1374 | ||
1375 | r = service_allocate_exec_fd_event_source(s, p[0], ret_event_source); | |
1376 | if (r < 0) | |
1377 | return r; | |
1378 | ||
e78695d4 | 1379 | TAKE_FD(p[0]); |
5686391b LP |
1380 | *ret_exec_fd = TAKE_FD(p[1]); |
1381 | ||
1382 | return 0; | |
1383 | } | |
1384 | ||
6375bd20 JW |
1385 | static bool service_exec_needs_notify_socket(Service *s, ExecFlags flags) { |
1386 | assert(s); | |
1387 | ||
1388 | /* Notifications are accepted depending on the process and | |
1389 | * the access setting of the service: | |
1390 | * process: \ access: NONE MAIN EXEC ALL | |
1391 | * main no yes yes yes | |
1392 | * control no no yes yes | |
1393 | * other (forked) no no no yes */ | |
1394 | ||
1395 | if (flags & EXEC_IS_CONTROL) | |
1396 | /* A control process */ | |
1397 | return IN_SET(s->notify_access, NOTIFY_EXEC, NOTIFY_ALL); | |
1398 | ||
1399 | /* We only spawn main processes and control processes, so any | |
1400 | * process that is not a control process is a main process */ | |
1401 | return s->notify_access != NOTIFY_NONE; | |
1402 | } | |
1403 | ||
81a2b7ce LP |
1404 | static int service_spawn( |
1405 | Service *s, | |
1406 | ExecCommand *c, | |
21b2ce39 | 1407 | usec_t timeout, |
c39f1ce2 | 1408 | ExecFlags flags, |
e78695d4 | 1409 | pid_t *ret_pid) { |
81a2b7ce | 1410 | |
b9c04eaf | 1411 | _cleanup_(exec_params_clear) ExecParameters exec_params = { |
c3f8a065 LP |
1412 | .flags = flags, |
1413 | .stdin_fd = -1, | |
1414 | .stdout_fd = -1, | |
1415 | .stderr_fd = -1, | |
1416 | .exec_fd = -1, | |
9fa95f85 | 1417 | }; |
5686391b | 1418 | _cleanup_(sd_event_source_unrefp) sd_event_source *exec_fd_source = NULL; |
c3f8a065 LP |
1419 | _cleanup_strv_free_ char **final_env = NULL, **our_env = NULL; |
1420 | size_t n_env = 0; | |
3c7416b6 | 1421 | pid_t pid; |
8dd4c05b LP |
1422 | int r; |
1423 | ||
034c6ed7 LP |
1424 | assert(s); |
1425 | assert(c); | |
e78695d4 | 1426 | assert(ret_pid); |
034c6ed7 | 1427 | |
78f93209 | 1428 | r = unit_prepare_exec(UNIT(s)); /* This realizes the cgroup, among other things */ |
3c7416b6 LP |
1429 | if (r < 0) |
1430 | return r; | |
1431 | ||
bc989831 ZJS |
1432 | assert(!s->exec_fd_event_source); |
1433 | ||
9c1a61ad LP |
1434 | if (flags & EXEC_IS_CONTROL) { |
1435 | /* If this is a control process, mask the permissions/chroot application if this is requested. */ | |
1436 | if (s->permissions_start_only) | |
1703fa41 | 1437 | exec_params.flags &= ~EXEC_APPLY_SANDBOXING; |
9c1a61ad LP |
1438 | if (s->root_directory_start_only) |
1439 | exec_params.flags &= ~EXEC_APPLY_CHROOT; | |
1440 | } | |
1441 | ||
c39f1ce2 | 1442 | if ((flags & EXEC_PASS_FDS) || |
6cf6bbc2 LP |
1443 | s->exec_context.std_input == EXEC_INPUT_SOCKET || |
1444 | s->exec_context.std_output == EXEC_OUTPUT_SOCKET || | |
1445 | s->exec_context.std_error == EXEC_OUTPUT_SOCKET) { | |
1446 | ||
c3f8a065 LP |
1447 | r = service_collect_fds(s, |
1448 | &exec_params.fds, | |
1449 | &exec_params.fd_names, | |
1450 | &exec_params.n_socket_fds, | |
1451 | &exec_params.n_storage_fds); | |
8dd4c05b | 1452 | if (r < 0) |
36c16a7c | 1453 | return r; |
6cf6bbc2 | 1454 | |
c3f8a065 | 1455 | log_unit_debug(UNIT(s), "Passing %zu fds to service", exec_params.n_socket_fds + exec_params.n_storage_fds); |
4f2d528d | 1456 | } |
44d8db9e | 1457 | |
5686391b | 1458 | if (!FLAGS_SET(flags, EXEC_IS_CONTROL) && s->type == SERVICE_EXEC) { |
c3f8a065 | 1459 | r = service_allocate_exec_fd(s, &exec_fd_source, &exec_params.exec_fd); |
5686391b LP |
1460 | if (r < 0) |
1461 | return r; | |
1462 | } | |
1463 | ||
36c16a7c LP |
1464 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), timeout)); |
1465 | if (r < 0) | |
1466 | return r; | |
034c6ed7 | 1467 | |
dcf3c3c3 | 1468 | our_env = new0(char*, 10); |
36c16a7c LP |
1469 | if (!our_env) |
1470 | return -ENOMEM; | |
c952c6ec | 1471 | |
3bdc25a4 | 1472 | if (service_exec_needs_notify_socket(s, flags)) { |
36c16a7c LP |
1473 | if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) |
1474 | return -ENOMEM; | |
c952c6ec | 1475 | |
3bdc25a4 LP |
1476 | exec_params.notify_socket = UNIT(s)->manager->notify_socket; |
1477 | } | |
1478 | ||
2105e76a | 1479 | if (s->main_pid > 0) |
36c16a7c LP |
1480 | if (asprintf(our_env + n_env++, "MAINPID="PID_FMT, s->main_pid) < 0) |
1481 | return -ENOMEM; | |
2105e76a | 1482 | |
c39f1ce2 | 1483 | if (MANAGER_IS_USER(UNIT(s)->manager)) |
df0ff127 | 1484 | if (asprintf(our_env + n_env++, "MANAGERPID="PID_FMT, getpid_cached()) < 0) |
36c16a7c | 1485 | return -ENOMEM; |
97ae63e2 | 1486 | |
dcf3c3c3 LP |
1487 | if (s->pid_file) |
1488 | if (asprintf(our_env + n_env++, "PIDFILE=%s", s->pid_file) < 0) | |
1489 | return -ENOMEM; | |
1490 | ||
8dd4c05b | 1491 | if (s->socket_fd >= 0) { |
3b1c5241 SL |
1492 | union sockaddr_union sa; |
1493 | socklen_t salen = sizeof(sa); | |
1494 | ||
f56e7bfe LP |
1495 | /* If this is a per-connection service instance, let's set $REMOTE_ADDR and $REMOTE_PORT to something |
1496 | * useful. Note that we do this only when we are still connected at this point in time, which we might | |
1497 | * very well not be. Hence we ignore all errors when retrieving peer information (as that might result | |
1498 | * in ENOTCONN), and just use whate we can use. */ | |
f2dbd059 | 1499 | |
f56e7bfe LP |
1500 | if (getpeername(s->socket_fd, &sa.sa, &salen) >= 0 && |
1501 | IN_SET(sa.sa.sa_family, AF_INET, AF_INET6, AF_VSOCK)) { | |
3b1c5241 SL |
1502 | _cleanup_free_ char *addr = NULL; |
1503 | char *t; | |
882ac6e7 | 1504 | unsigned port; |
3b1c5241 SL |
1505 | |
1506 | r = sockaddr_pretty(&sa.sa, salen, true, false, &addr); | |
1507 | if (r < 0) | |
36c16a7c | 1508 | return r; |
3b1c5241 | 1509 | |
b910cc72 | 1510 | t = strjoin("REMOTE_ADDR=", addr); |
36c16a7c LP |
1511 | if (!t) |
1512 | return -ENOMEM; | |
3b1c5241 SL |
1513 | our_env[n_env++] = t; |
1514 | ||
882ac6e7 SH |
1515 | r = sockaddr_port(&sa.sa, &port); |
1516 | if (r < 0) | |
1517 | return r; | |
3b1c5241 | 1518 | |
36c16a7c LP |
1519 | if (asprintf(&t, "REMOTE_PORT=%u", port) < 0) |
1520 | return -ENOMEM; | |
3b1c5241 SL |
1521 | our_env[n_env++] = t; |
1522 | } | |
1523 | } | |
1524 | ||
136dc4c4 LP |
1525 | if (flags & EXEC_SETENV_RESULT) { |
1526 | if (asprintf(our_env + n_env++, "SERVICE_RESULT=%s", service_result_to_string(s->result)) < 0) | |
1527 | return -ENOMEM; | |
1528 | ||
1529 | if (s->main_exec_status.pid > 0 && | |
1530 | dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) { | |
1531 | if (asprintf(our_env + n_env++, "EXIT_CODE=%s", sigchld_code_to_string(s->main_exec_status.code)) < 0) | |
1532 | return -ENOMEM; | |
1533 | ||
1534 | if (s->main_exec_status.code == CLD_EXITED) | |
1535 | r = asprintf(our_env + n_env++, "EXIT_STATUS=%i", s->main_exec_status.status); | |
1536 | else | |
1537 | r = asprintf(our_env + n_env++, "EXIT_STATUS=%s", signal_to_string(s->main_exec_status.status)); | |
1538 | if (r < 0) | |
1539 | return -ENOMEM; | |
1540 | } | |
1541 | } | |
1542 | ||
1ad6e8b3 LP |
1543 | r = unit_set_exec_params(UNIT(s), &exec_params); |
1544 | if (r < 0) | |
1545 | return r; | |
3536f49e | 1546 | |
4ab3d29f | 1547 | final_env = strv_env_merge(exec_params.environment, our_env); |
36c16a7c LP |
1548 | if (!final_env) |
1549 | return -ENOMEM; | |
c952c6ec | 1550 | |
ac647978 LP |
1551 | /* System D-Bus needs nss-systemd disabled, so that we don't deadlock */ |
1552 | SET_FLAG(exec_params.flags, EXEC_NSS_BYPASS_BUS, | |
1553 | MANAGER_IS_SYSTEM(UNIT(s)->manager) && unit_has_name(UNIT(s), SPECIAL_DBUS_SERVICE)); | |
4ad49000 | 1554 | |
b9c04eaf | 1555 | strv_free_and_replace(exec_params.environment, final_env); |
34b3f625 | 1556 | exec_params.watchdog_usec = service_get_watchdog_usec(s); |
a34ceba6 | 1557 | exec_params.selinux_context_net = s->socket_fd_selinux_context_net; |
9fa95f85 DM |
1558 | if (s->type == SERVICE_IDLE) |
1559 | exec_params.idle_pipe = UNIT(s)->manager->idle_pipe; | |
a34ceba6 LP |
1560 | exec_params.stdin_fd = s->stdin_fd; |
1561 | exec_params.stdout_fd = s->stdout_fd; | |
1562 | exec_params.stderr_fd = s->stderr_fd; | |
9fa95f85 | 1563 | |
f2341e0a LP |
1564 | r = exec_spawn(UNIT(s), |
1565 | c, | |
9e2f7c11 | 1566 | &s->exec_context, |
9fa95f85 | 1567 | &exec_params, |
613b411c | 1568 | s->exec_runtime, |
29206d46 | 1569 | &s->dynamic_creds, |
9e2f7c11 | 1570 | &pid); |
9e2f7c11 | 1571 | if (r < 0) |
36c16a7c | 1572 | return r; |
034c6ed7 | 1573 | |
5686391b LP |
1574 | s->exec_fd_event_source = TAKE_PTR(exec_fd_source); |
1575 | s->exec_fd_hot = false; | |
1576 | ||
f75f613d FB |
1577 | r = unit_watch_pid(UNIT(s), pid, true); |
1578 | if (r < 0) | |
36c16a7c | 1579 | return r; |
034c6ed7 | 1580 | |
e78695d4 | 1581 | *ret_pid = pid; |
034c6ed7 | 1582 | |
5cb5a6ff | 1583 | return 0; |
034c6ed7 LP |
1584 | } |
1585 | ||
80876c20 LP |
1586 | static int main_pid_good(Service *s) { |
1587 | assert(s); | |
1588 | ||
51894d70 | 1589 | /* Returns 0 if the pid is dead, > 0 if it is good, < 0 if we don't know */ |
80876c20 | 1590 | |
fc08079e | 1591 | /* If we know the pid file, then let's just check if it is |
80876c20 | 1592 | * still valid */ |
6dfa5494 LP |
1593 | if (s->main_pid_known) { |
1594 | ||
1595 | /* If it's an alien child let's check if it is still | |
1596 | * alive ... */ | |
62220cf7 | 1597 | if (s->main_pid_alien && s->main_pid > 0) |
9f5650ae | 1598 | return pid_is_alive(s->main_pid); |
6dfa5494 LP |
1599 | |
1600 | /* .. otherwise assume we'll get a SIGCHLD for it, | |
1601 | * which we really should wait for to collect exit | |
1602 | * status and code */ | |
80876c20 | 1603 | return s->main_pid > 0; |
6dfa5494 | 1604 | } |
80876c20 LP |
1605 | |
1606 | /* We don't know the pid */ | |
1607 | return -EAGAIN; | |
1608 | } | |
1609 | ||
019be286 | 1610 | static int control_pid_good(Service *s) { |
80876c20 LP |
1611 | assert(s); |
1612 | ||
07697d7e LP |
1613 | /* Returns 0 if the control PID is dead, > 0 if it is good. We never actually return < 0 here, but in order to |
1614 | * make this function as similar as possible to main_pid_good() and cgroup_good(), we pretend that < 0 also | |
1615 | * means: we can't figure it out. */ | |
1616 | ||
80876c20 LP |
1617 | return s->control_pid > 0; |
1618 | } | |
1619 | ||
cb0e818f HC |
1620 | static int cgroup_good(Service *s) { |
1621 | int r; | |
1622 | ||
abaf5edd ZJS |
1623 | assert(s); |
1624 | ||
cb0e818f HC |
1625 | /* Returns 0 if the cgroup is empty or doesn't exist, > 0 if it is exists and is populated, < 0 if we can't |
1626 | * figure it out */ | |
1627 | ||
abaf5edd ZJS |
1628 | if (!UNIT(s)->cgroup_path) |
1629 | return 0; | |
1630 | ||
1631 | r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, UNIT(s)->cgroup_path); | |
117dcc57 | 1632 | if (r < 0) |
80876c20 LP |
1633 | return r; |
1634 | ||
b13ddbbc | 1635 | return r == 0; |
80876c20 LP |
1636 | } |
1637 | ||
ebc57b89 | 1638 | static bool service_shall_restart(Service *s, const char **reason) { |
a509f0e6 LP |
1639 | assert(s); |
1640 | ||
1641 | /* Don't restart after manual stops */ | |
ebc57b89 ZJS |
1642 | if (s->forbid_restart) { |
1643 | *reason = "manual stop"; | |
a509f0e6 | 1644 | return false; |
ebc57b89 | 1645 | } |
a509f0e6 LP |
1646 | |
1647 | /* Never restart if this is configured as special exception */ | |
ebc57b89 ZJS |
1648 | if (exit_status_set_test(&s->restart_prevent_status, s->main_exec_status.code, s->main_exec_status.status)) { |
1649 | *reason = "prevented by exit status"; | |
a509f0e6 | 1650 | return false; |
ebc57b89 | 1651 | } |
a509f0e6 LP |
1652 | |
1653 | /* Restart if the exit code/status are configured as restart triggers */ | |
ebc57b89 ZJS |
1654 | if (exit_status_set_test(&s->restart_force_status, s->main_exec_status.code, s->main_exec_status.status)) { |
1655 | *reason = "forced by exit status"; | |
a509f0e6 | 1656 | return true; |
ebc57b89 | 1657 | } |
a509f0e6 | 1658 | |
ebc57b89 | 1659 | *reason = "restart setting"; |
a509f0e6 LP |
1660 | switch (s->restart) { |
1661 | ||
1662 | case SERVICE_RESTART_NO: | |
1663 | return false; | |
1664 | ||
1665 | case SERVICE_RESTART_ALWAYS: | |
1666 | return true; | |
1667 | ||
1668 | case SERVICE_RESTART_ON_SUCCESS: | |
1669 | return s->result == SERVICE_SUCCESS; | |
1670 | ||
1671 | case SERVICE_RESTART_ON_FAILURE: | |
bb924478 | 1672 | return !IN_SET(s->result, SERVICE_SUCCESS, SERVICE_SKIP_CONDITION); |
a509f0e6 LP |
1673 | |
1674 | case SERVICE_RESTART_ON_ABNORMAL: | |
bb924478 | 1675 | return !IN_SET(s->result, SERVICE_SUCCESS, SERVICE_FAILURE_EXIT_CODE, SERVICE_SKIP_CONDITION); |
a509f0e6 LP |
1676 | |
1677 | case SERVICE_RESTART_ON_WATCHDOG: | |
1678 | return s->result == SERVICE_FAILURE_WATCHDOG; | |
1679 | ||
1680 | case SERVICE_RESTART_ON_ABORT: | |
1681 | return IN_SET(s->result, SERVICE_FAILURE_SIGNAL, SERVICE_FAILURE_CORE_DUMP); | |
1682 | ||
1683 | default: | |
04499a70 | 1684 | assert_not_reached(); |
a509f0e6 LP |
1685 | } |
1686 | } | |
1687 | ||
deb4e708 MK |
1688 | static bool service_will_restart(Unit *u) { |
1689 | Service *s = SERVICE(u); | |
1690 | ||
53f47dfc YW |
1691 | assert(s); |
1692 | ||
deb4e708 MK |
1693 | if (s->will_auto_restart) |
1694 | return true; | |
53f47dfc YW |
1695 | if (s->state == SERVICE_AUTO_RESTART) |
1696 | return true; | |
2ad2e41a | 1697 | |
52a12341 | 1698 | return unit_will_restart_default(u); |
53f47dfc YW |
1699 | } |
1700 | ||
f42806df | 1701 | static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) { |
31cd5f63 | 1702 | ServiceState end_state; |
034c6ed7 | 1703 | int r; |
0f52f8e5 | 1704 | |
034c6ed7 LP |
1705 | assert(s); |
1706 | ||
0f52f8e5 LP |
1707 | /* If there's a stop job queued before we enter the DEAD state, we shouldn't act on Restart=, in order to not |
1708 | * undo what has already been enqueued. */ | |
1709 | if (unit_stop_pending(UNIT(s))) | |
1710 | allow_restart = false; | |
1711 | ||
a0fef983 | 1712 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1713 | s->result = f; |
034c6ed7 | 1714 | |
31cd5f63 AZ |
1715 | if (s->result == SERVICE_SUCCESS) { |
1716 | unit_log_success(UNIT(s)); | |
1717 | end_state = SERVICE_DEAD; | |
1718 | } else if (s->result == SERVICE_SKIP_CONDITION) { | |
1719 | unit_log_skip(UNIT(s), service_result_to_string(s->result)); | |
1720 | end_state = SERVICE_DEAD; | |
1721 | } else { | |
1722 | unit_log_failure(UNIT(s), service_result_to_string(s->result)); | |
1723 | end_state = SERVICE_FAILED; | |
1724 | } | |
4c425434 | 1725 | unit_warn_leftover_processes(UNIT(s), unit_log_leftover_process_stop); |
ed77d407 | 1726 | |
ebc57b89 ZJS |
1727 | if (!allow_restart) |
1728 | log_unit_debug(UNIT(s), "Service restart not allowed."); | |
1729 | else { | |
1730 | const char *reason; | |
1731 | bool shall_restart; | |
1732 | ||
1733 | shall_restart = service_shall_restart(s, &reason); | |
1734 | log_unit_debug(UNIT(s), "Service will %srestart (%s)", | |
1735 | shall_restart ? "" : "not ", | |
1736 | reason); | |
1737 | if (shall_restart) | |
1738 | s->will_auto_restart = true; | |
1739 | } | |
deb4e708 | 1740 | |
7eb2a8a1 LP |
1741 | /* Make sure service_release_resources() doesn't destroy our FD store, while we are changing through |
1742 | * SERVICE_FAILED/SERVICE_DEAD before entering into SERVICE_AUTO_RESTART. */ | |
1743 | s->n_keep_fd_store ++; | |
1744 | ||
31cd5f63 | 1745 | service_set_state(s, end_state); |
0c7f15b3 | 1746 | |
deb4e708 MK |
1747 | if (s->will_auto_restart) { |
1748 | s->will_auto_restart = false; | |
034c6ed7 | 1749 | |
36c16a7c | 1750 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->restart_usec)); |
7eb2a8a1 LP |
1751 | if (r < 0) { |
1752 | s->n_keep_fd_store--; | |
034c6ed7 | 1753 | goto fail; |
7eb2a8a1 | 1754 | } |
034c6ed7 LP |
1755 | |
1756 | service_set_state(s, SERVICE_AUTO_RESTART); | |
7a0019d3 LP |
1757 | } else |
1758 | /* If we shan't restart, then flush out the restart counter. But don't do that immediately, so that the | |
1759 | * user can still introspect the counter. Do so on the next start. */ | |
1760 | s->flush_n_restarts = true; | |
034c6ed7 | 1761 | |
5238e957 | 1762 | /* 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 |
1763 | * queue, so that the fd store is possibly gc'ed again */ |
1764 | s->n_keep_fd_store--; | |
1765 | unit_add_to_gc_queue(UNIT(s)); | |
1766 | ||
f2341e0a | 1767 | /* The next restart might not be a manual stop, hence reset the flag indicating manual stops */ |
47342320 LP |
1768 | s->forbid_restart = false; |
1769 | ||
e66cf1a3 | 1770 | /* We want fresh tmpdirs in case service is started again immediately */ |
e8a565cb | 1771 | s->exec_runtime = exec_runtime_unref(s->exec_runtime, true); |
c17ec25e | 1772 | |
95939aed | 1773 | /* Also, remove the runtime directory */ |
bb0c0d6f | 1774 | unit_destroy_runtime_data(UNIT(s), &s->exec_context); |
e66cf1a3 | 1775 | |
00d9ef85 LP |
1776 | /* Get rid of the IPC bits of the user */ |
1777 | unit_unref_uid_gid(UNIT(s), true); | |
1778 | ||
29206d46 LP |
1779 | /* Release the user, and destroy it if we are the only remaining owner */ |
1780 | dynamic_creds_destroy(&s->dynamic_creds); | |
1781 | ||
9285c9ff LN |
1782 | /* Try to delete the pid file. At this point it will be |
1783 | * out-of-date, and some software might be confused by it, so | |
1784 | * let's remove it. */ | |
1785 | if (s->pid_file) | |
fabab190 | 1786 | (void) unlink(s->pid_file); |
9285c9ff | 1787 | |
6f765baf LP |
1788 | /* Reset TTY ownership if necessary */ |
1789 | exec_context_revert_tty(&s->exec_context); | |
1790 | ||
034c6ed7 LP |
1791 | return; |
1792 | ||
1793 | fail: | |
f2341e0a | 1794 | log_unit_warning_errno(UNIT(s), r, "Failed to run install restart timer: %m"); |
f42806df | 1795 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); |
034c6ed7 LP |
1796 | } |
1797 | ||
f42806df | 1798 | static void service_enter_stop_post(Service *s, ServiceResult f) { |
034c6ed7 LP |
1799 | int r; |
1800 | assert(s); | |
1801 | ||
a0fef983 | 1802 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1803 | s->result = f; |
034c6ed7 | 1804 | |
5e94833f | 1805 | service_unwatch_control_pid(s); |
50be4f4a | 1806 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
5e94833f | 1807 | |
117dcc57 ZJS |
1808 | s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST]; |
1809 | if (s->control_command) { | |
867b3b7d LP |
1810 | s->control_command_id = SERVICE_EXEC_STOP_POST; |
1811 | ||
ecedd90f LP |
1812 | r = service_spawn(s, |
1813 | s->control_command, | |
21b2ce39 | 1814 | s->timeout_stop_usec, |
78f93209 | 1815 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_IS_CONTROL|EXEC_SETENV_RESULT|EXEC_CONTROL_CGROUP, |
ecedd90f LP |
1816 | &s->control_pid); |
1817 | if (r < 0) | |
034c6ed7 LP |
1818 | goto fail; |
1819 | ||
80876c20 LP |
1820 | service_set_state(s, SERVICE_STOP_POST); |
1821 | } else | |
ac84d1fb | 1822 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
1823 | |
1824 | return; | |
1825 | ||
1826 | fail: | |
f2341e0a | 1827 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop-post' task: %m"); |
f42806df | 1828 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1829 | } |
1830 | ||
a232ebcc | 1831 | static int state_to_kill_operation(Service *s, ServiceState state) { |
4940c0b0 LP |
1832 | switch (state) { |
1833 | ||
c87700a1 | 1834 | case SERVICE_STOP_WATCHDOG: |
bf760801 | 1835 | case SERVICE_FINAL_WATCHDOG: |
c87700a1 | 1836 | return KILL_WATCHDOG; |
4940c0b0 LP |
1837 | |
1838 | case SERVICE_STOP_SIGTERM: | |
a232ebcc ZJS |
1839 | if (unit_has_job_type(UNIT(s), JOB_RESTART)) |
1840 | return KILL_RESTART; | |
1841 | _fallthrough_; | |
1842 | ||
4940c0b0 LP |
1843 | case SERVICE_FINAL_SIGTERM: |
1844 | return KILL_TERMINATE; | |
1845 | ||
1846 | case SERVICE_STOP_SIGKILL: | |
1847 | case SERVICE_FINAL_SIGKILL: | |
1848 | return KILL_KILL; | |
1849 | ||
1850 | default: | |
1851 | return _KILL_OPERATION_INVALID; | |
1852 | } | |
1853 | } | |
1854 | ||
f42806df | 1855 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) { |
bf760801 | 1856 | int kill_operation, r; |
034c6ed7 LP |
1857 | |
1858 | assert(s); | |
1859 | ||
a0fef983 | 1860 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1861 | s->result = f; |
034c6ed7 | 1862 | |
50be4f4a LP |
1863 | /* Before sending any signal, make sure we track all members of this cgroup */ |
1864 | (void) unit_watch_all_pids(UNIT(s)); | |
1865 | ||
1866 | /* Also, enqueue a job that we recheck all our PIDs a bit later, given that it's likely some processes have | |
1867 | * died now */ | |
1868 | (void) unit_enqueue_rewatch_pids(UNIT(s)); | |
a911bb9a | 1869 | |
bf760801 | 1870 | kill_operation = state_to_kill_operation(s, state); |
cd2086fe LP |
1871 | r = unit_kill_context( |
1872 | UNIT(s), | |
1873 | &s->kill_context, | |
bf760801 | 1874 | kill_operation, |
cd2086fe LP |
1875 | s->main_pid, |
1876 | s->control_pid, | |
1877 | s->main_pid_alien); | |
1878 | if (r < 0) | |
1879 | goto fail; | |
034c6ed7 | 1880 | |
cd2086fe | 1881 | if (r > 0) { |
dc653bf4 | 1882 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), |
bf760801 | 1883 | kill_operation == KILL_WATCHDOG ? service_timeout_abort_usec(s) : s->timeout_stop_usec)); |
36c16a7c LP |
1884 | if (r < 0) |
1885 | goto fail; | |
d6ea93e3 | 1886 | |
80876c20 | 1887 | service_set_state(s, state); |
c87700a1 | 1888 | } else if (IN_SET(state, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM) && s->kill_context.send_sigkill) |
ac84d1fb | 1889 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_SUCCESS); |
c87700a1 | 1890 | else if (IN_SET(state, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 1891 | service_enter_stop_post(s, SERVICE_SUCCESS); |
bf760801 | 1892 | else if (IN_SET(state, SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM) && s->kill_context.send_sigkill) |
ac84d1fb | 1893 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_SUCCESS); |
80876c20 | 1894 | else |
f42806df | 1895 | service_enter_dead(s, SERVICE_SUCCESS, true); |
034c6ed7 LP |
1896 | |
1897 | return; | |
1898 | ||
1899 | fail: | |
f2341e0a | 1900 | log_unit_warning_errno(UNIT(s), r, "Failed to kill processes: %m"); |
034c6ed7 | 1901 | |
c87700a1 | 1902 | if (IN_SET(state, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 1903 | service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES); |
034c6ed7 | 1904 | else |
f42806df | 1905 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
034c6ed7 LP |
1906 | } |
1907 | ||
308d72dc LP |
1908 | static void service_enter_stop_by_notify(Service *s) { |
1909 | assert(s); | |
1910 | ||
50be4f4a | 1911 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
308d72dc | 1912 | |
36c16a7c | 1913 | service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_stop_usec)); |
308d72dc | 1914 | |
6041a7ee MS |
1915 | /* The service told us it's stopping, so it's as if we SIGTERM'd it. */ |
1916 | service_set_state(s, SERVICE_STOP_SIGTERM); | |
308d72dc LP |
1917 | } |
1918 | ||
f42806df | 1919 | static void service_enter_stop(Service *s, ServiceResult f) { |
034c6ed7 | 1920 | int r; |
5925dd3c | 1921 | |
034c6ed7 LP |
1922 | assert(s); |
1923 | ||
a0fef983 | 1924 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1925 | s->result = f; |
034c6ed7 | 1926 | |
5e94833f | 1927 | service_unwatch_control_pid(s); |
50be4f4a | 1928 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
5e94833f | 1929 | |
117dcc57 ZJS |
1930 | s->control_command = s->exec_command[SERVICE_EXEC_STOP]; |
1931 | if (s->control_command) { | |
867b3b7d LP |
1932 | s->control_command_id = SERVICE_EXEC_STOP; |
1933 | ||
ecedd90f LP |
1934 | r = service_spawn(s, |
1935 | s->control_command, | |
21b2ce39 | 1936 | s->timeout_stop_usec, |
78f93209 | 1937 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_SETENV_RESULT|EXEC_CONTROL_CGROUP, |
ecedd90f LP |
1938 | &s->control_pid); |
1939 | if (r < 0) | |
034c6ed7 LP |
1940 | goto fail; |
1941 | ||
80876c20 LP |
1942 | service_set_state(s, SERVICE_STOP); |
1943 | } else | |
f42806df | 1944 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
1945 | |
1946 | return; | |
1947 | ||
1948 | fail: | |
f2341e0a | 1949 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop' task: %m"); |
f42806df | 1950 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1951 | } |
1952 | ||
957c3cf9 LP |
1953 | static bool service_good(Service *s) { |
1954 | int main_pid_ok; | |
1955 | assert(s); | |
1956 | ||
1957 | if (s->type == SERVICE_DBUS && !s->bus_name_good) | |
1958 | return false; | |
1959 | ||
1960 | main_pid_ok = main_pid_good(s); | |
1961 | if (main_pid_ok > 0) /* It's alive */ | |
1962 | return true; | |
1963 | if (main_pid_ok == 0) /* It's dead */ | |
1964 | return false; | |
1965 | ||
1966 | /* OK, we don't know anything about the main PID, maybe | |
1967 | * because there is none. Let's check the control group | |
1968 | * instead. */ | |
1969 | ||
1970 | return cgroup_good(s) != 0; | |
1971 | } | |
1972 | ||
f42806df | 1973 | static void service_enter_running(Service *s, ServiceResult f) { |
80876c20 LP |
1974 | assert(s); |
1975 | ||
a0fef983 | 1976 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1977 | s->result = f; |
80876c20 | 1978 | |
089b64d5 LP |
1979 | service_unwatch_control_pid(s); |
1980 | ||
ec5b1452 LP |
1981 | if (s->result != SERVICE_SUCCESS) |
1982 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); | |
1983 | else if (service_good(s)) { | |
308d72dc | 1984 | |
ec5b1452 | 1985 | /* If there are any queued up sd_notify() notifications, process them now */ |
308d72dc LP |
1986 | if (s->notify_state == NOTIFY_RELOADING) |
1987 | service_enter_reload_by_notify(s); | |
1988 | else if (s->notify_state == NOTIFY_STOPPING) | |
1989 | service_enter_stop_by_notify(s); | |
36c16a7c | 1990 | else { |
308d72dc | 1991 | service_set_state(s, SERVICE_RUNNING); |
36c16a7c LP |
1992 | service_arm_timer(s, usec_add(UNIT(s)->active_enter_timestamp.monotonic, s->runtime_max_usec)); |
1993 | } | |
308d72dc | 1994 | |
ec5b1452 | 1995 | } else if (s->remain_after_exit) |
80876c20 LP |
1996 | service_set_state(s, SERVICE_EXITED); |
1997 | else | |
f42806df | 1998 | service_enter_stop(s, SERVICE_SUCCESS); |
80876c20 LP |
1999 | } |
2000 | ||
034c6ed7 LP |
2001 | static void service_enter_start_post(Service *s) { |
2002 | int r; | |
2003 | assert(s); | |
2004 | ||
5e94833f | 2005 | service_unwatch_control_pid(s); |
842129f5 | 2006 | service_reset_watchdog(s); |
bb242b7b | 2007 | |
117dcc57 ZJS |
2008 | s->control_command = s->exec_command[SERVICE_EXEC_START_POST]; |
2009 | if (s->control_command) { | |
867b3b7d LP |
2010 | s->control_command_id = SERVICE_EXEC_START_POST; |
2011 | ||
ecedd90f LP |
2012 | r = service_spawn(s, |
2013 | s->control_command, | |
21b2ce39 | 2014 | s->timeout_start_usec, |
78f93209 | 2015 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_CONTROL_CGROUP, |
ecedd90f LP |
2016 | &s->control_pid); |
2017 | if (r < 0) | |
034c6ed7 LP |
2018 | goto fail; |
2019 | ||
80876c20 LP |
2020 | service_set_state(s, SERVICE_START_POST); |
2021 | } else | |
f42806df | 2022 | service_enter_running(s, SERVICE_SUCCESS); |
034c6ed7 LP |
2023 | |
2024 | return; | |
2025 | ||
2026 | fail: | |
f2341e0a | 2027 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-post' task: %m"); |
f42806df | 2028 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
2029 | } |
2030 | ||
e9a4f676 | 2031 | static void service_kill_control_process(Service *s) { |
a6951a50 | 2032 | int r; |
4ad49000 | 2033 | |
a6951a50 LP |
2034 | assert(s); |
2035 | ||
e9a4f676 LP |
2036 | if (s->control_pid <= 0) |
2037 | return; | |
4ad49000 | 2038 | |
e9a4f676 LP |
2039 | r = kill_and_sigcont(s->control_pid, SIGKILL); |
2040 | if (r < 0) { | |
2041 | _cleanup_free_ char *comm = NULL; | |
a6951a50 | 2042 | |
e9a4f676 | 2043 | (void) get_process_comm(s->control_pid, &comm); |
a6951a50 | 2044 | |
e9a4f676 LP |
2045 | log_unit_debug_errno(UNIT(s), r, "Failed to kill control process " PID_FMT " (%s), ignoring: %m", |
2046 | s->control_pid, strna(comm)); | |
a6951a50 | 2047 | } |
4ad49000 LP |
2048 | } |
2049 | ||
c53d2d54 DB |
2050 | static int service_adverse_to_leftover_processes(Service *s) { |
2051 | assert(s); | |
2052 | ||
2053 | /* KillMode=mixed and control group are used to indicate that all process should be killed off. | |
4c425434 LP |
2054 | * SendSIGKILL= is used for services that require a clean shutdown. These are typically database |
2055 | * service where a SigKilled process would result in a lengthy recovery and who's shutdown or startup | |
2056 | * time is quite variable (so Timeout settings aren't of use). | |
c53d2d54 DB |
2057 | * |
2058 | * Here we take these two factors and refuse to start a service if there are existing processes | |
2059 | * within a control group. Databases, while generally having some protection against multiple | |
4c425434 | 2060 | * instances running, lets not stress the rigor of these. Also ExecStartPre= parts of the service |
c53d2d54 | 2061 | * aren't as rigoriously written to protect aganst against multiple use. */ |
4c425434 LP |
2062 | |
2063 | if (unit_warn_leftover_processes(UNIT(s), unit_log_leftover_process_start) > 0 && | |
c53d2d54 | 2064 | IN_SET(s->kill_context.kill_mode, KILL_MIXED, KILL_CONTROL_GROUP) && |
569554d9 ZJS |
2065 | !s->kill_context.send_sigkill) |
2066 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(EBUSY), | |
2067 | "Will not start SendSIGKILL=no service of type KillMode=control-group or mixed while processes exist"); | |
2068 | ||
c53d2d54 DB |
2069 | return 0; |
2070 | } | |
2071 | ||
034c6ed7 | 2072 | static void service_enter_start(Service *s) { |
4ad49000 | 2073 | ExecCommand *c; |
36c16a7c | 2074 | usec_t timeout; |
034c6ed7 LP |
2075 | pid_t pid; |
2076 | int r; | |
2077 | ||
2078 | assert(s); | |
2079 | ||
41efeaec LP |
2080 | service_unwatch_control_pid(s); |
2081 | service_unwatch_main_pid(s); | |
80876c20 | 2082 | |
c53d2d54 DB |
2083 | r = service_adverse_to_leftover_processes(s); |
2084 | if (r < 0) | |
2085 | goto fail; | |
a4634b21 | 2086 | |
867b3b7d LP |
2087 | if (s->type == SERVICE_FORKING) { |
2088 | s->control_command_id = SERVICE_EXEC_START; | |
2089 | c = s->control_command = s->exec_command[SERVICE_EXEC_START]; | |
2090 | ||
2091 | s->main_command = NULL; | |
2092 | } else { | |
2093 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
2094 | s->control_command = NULL; | |
2095 | ||
2096 | c = s->main_command = s->exec_command[SERVICE_EXEC_START]; | |
2097 | } | |
34e9ba66 | 2098 | |
96fb8242 | 2099 | if (!c) { |
47fffb35 | 2100 | if (s->type != SERVICE_ONESHOT) { |
cbc056c8 ZJS |
2101 | /* There's no command line configured for the main command? Hmm, that is strange. |
2102 | * This can only happen if the configuration changes at runtime. In this case, | |
2103 | * let's enter a failure state. */ | |
d85ff944 | 2104 | r = log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENXIO), "There's no 'start' task anymore we could start."); |
47fffb35 LP |
2105 | goto fail; |
2106 | } | |
2107 | ||
ef5ae8e7 ZJS |
2108 | /* We force a fake state transition here. Otherwise, the unit would go directly from |
2109 | * SERVICE_DEAD to SERVICE_DEAD without SERVICE_ACTIVATING or SERVICE_ACTIVE | |
5238e957 | 2110 | * in between. This way we can later trigger actions that depend on the state |
ef5ae8e7 ZJS |
2111 | * transition, including SuccessAction=. */ |
2112 | service_set_state(s, SERVICE_START); | |
2113 | ||
96fb8242 LP |
2114 | service_enter_start_post(s); |
2115 | return; | |
2116 | } | |
2117 | ||
36c16a7c LP |
2118 | if (IN_SET(s->type, SERVICE_SIMPLE, SERVICE_IDLE)) |
2119 | /* For simple + idle this is the main process. We don't apply any timeout here, but | |
2120 | * service_enter_running() will later apply the .runtime_max_usec timeout. */ | |
2121 | timeout = USEC_INFINITY; | |
2122 | else | |
2123 | timeout = s->timeout_start_usec; | |
2124 | ||
ecedd90f LP |
2125 | r = service_spawn(s, |
2126 | c, | |
36c16a7c | 2127 | timeout, |
bb0c0d6f | 2128 | EXEC_PASS_FDS|EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_SET_WATCHDOG|EXEC_WRITE_CREDENTIALS, |
ecedd90f LP |
2129 | &pid); |
2130 | if (r < 0) | |
034c6ed7 LP |
2131 | goto fail; |
2132 | ||
36c16a7c | 2133 | if (IN_SET(s->type, SERVICE_SIMPLE, SERVICE_IDLE)) { |
034c6ed7 LP |
2134 | /* For simple services we immediately start |
2135 | * the START_POST binaries. */ | |
2136 | ||
5925dd3c | 2137 | service_set_main_pid(s, pid); |
034c6ed7 LP |
2138 | service_enter_start_post(s); |
2139 | ||
2140 | } else if (s->type == SERVICE_FORKING) { | |
2141 | ||
2142 | /* For forking services we wait until the start | |
2143 | * process exited. */ | |
2144 | ||
e55224ca | 2145 | s->control_pid = pid; |
80876c20 LP |
2146 | service_set_state(s, SERVICE_START); |
2147 | ||
5686391b | 2148 | } else if (IN_SET(s->type, SERVICE_ONESHOT, SERVICE_DBUS, SERVICE_NOTIFY, SERVICE_EXEC)) { |
7d55e835 | 2149 | |
5686391b | 2150 | /* For oneshot services we wait until the start process exited, too, but it is our main process. */ |
7d55e835 | 2151 | |
5686391b LP |
2152 | /* For D-Bus services we know the main pid right away, but wait for the bus name to appear on the |
2153 | * bus. 'notify' and 'exec' services are similar. */ | |
05e343b7 | 2154 | |
5925dd3c | 2155 | service_set_main_pid(s, pid); |
80876c20 | 2156 | service_set_state(s, SERVICE_START); |
034c6ed7 | 2157 | } else |
04499a70 | 2158 | assert_not_reached(); |
034c6ed7 LP |
2159 | |
2160 | return; | |
2161 | ||
2162 | fail: | |
f2341e0a | 2163 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start' task: %m"); |
c3fda31d | 2164 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
2165 | } |
2166 | ||
2167 | static void service_enter_start_pre(Service *s) { | |
2168 | int r; | |
2169 | ||
2170 | assert(s); | |
2171 | ||
5e94833f LP |
2172 | service_unwatch_control_pid(s); |
2173 | ||
117dcc57 ZJS |
2174 | s->control_command = s->exec_command[SERVICE_EXEC_START_PRE]; |
2175 | if (s->control_command) { | |
8f53a7b8 | 2176 | |
c53d2d54 DB |
2177 | r = service_adverse_to_leftover_processes(s); |
2178 | if (r < 0) | |
2179 | goto fail; | |
a4634b21 | 2180 | |
867b3b7d LP |
2181 | s->control_command_id = SERVICE_EXEC_START_PRE; |
2182 | ||
ecedd90f LP |
2183 | r = service_spawn(s, |
2184 | s->control_command, | |
21b2ce39 | 2185 | s->timeout_start_usec, |
1703fa41 | 2186 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_APPLY_TTY_STDIN, |
ecedd90f LP |
2187 | &s->control_pid); |
2188 | if (r < 0) | |
034c6ed7 LP |
2189 | goto fail; |
2190 | ||
80876c20 LP |
2191 | service_set_state(s, SERVICE_START_PRE); |
2192 | } else | |
034c6ed7 LP |
2193 | service_enter_start(s); |
2194 | ||
2195 | return; | |
2196 | ||
2197 | fail: | |
f2341e0a | 2198 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-pre' task: %m"); |
f42806df | 2199 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
034c6ed7 LP |
2200 | } |
2201 | ||
31cd5f63 AZ |
2202 | static void service_enter_condition(Service *s) { |
2203 | int r; | |
2204 | ||
2205 | assert(s); | |
2206 | ||
2207 | service_unwatch_control_pid(s); | |
2208 | ||
2209 | s->control_command = s->exec_command[SERVICE_EXEC_CONDITION]; | |
2210 | if (s->control_command) { | |
2211 | ||
2212 | r = service_adverse_to_leftover_processes(s); | |
2213 | if (r < 0) | |
2214 | goto fail; | |
2215 | ||
2216 | s->control_command_id = SERVICE_EXEC_CONDITION; | |
2217 | ||
2218 | r = service_spawn(s, | |
2219 | s->control_command, | |
2220 | s->timeout_start_usec, | |
2221 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_APPLY_TTY_STDIN, | |
2222 | &s->control_pid); | |
2223 | ||
2224 | if (r < 0) | |
2225 | goto fail; | |
2226 | ||
2227 | service_set_state(s, SERVICE_CONDITION); | |
2228 | } else | |
2229 | service_enter_start_pre(s); | |
2230 | ||
2231 | return; | |
2232 | ||
2233 | fail: | |
2234 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'exec-condition' task: %m"); | |
2235 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); | |
2236 | } | |
2237 | ||
034c6ed7 | 2238 | static void service_enter_restart(Service *s) { |
4afd3348 | 2239 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
034c6ed7 | 2240 | int r; |
398ef8ba | 2241 | |
034c6ed7 LP |
2242 | assert(s); |
2243 | ||
28a2dfe8 | 2244 | if (unit_has_job_type(UNIT(s), JOB_STOP)) { |
a8bb2e65 | 2245 | /* Don't restart things if we are going down anyway */ |
f2341e0a | 2246 | log_unit_info(UNIT(s), "Stop job pending for unit, delaying automatic restart."); |
2edfa366 | 2247 | |
36c16a7c | 2248 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->restart_usec)); |
a8bb2e65 | 2249 | if (r < 0) |
2edfa366 | 2250 | goto fail; |
feae8adb DW |
2251 | |
2252 | return; | |
2edfa366 LP |
2253 | } |
2254 | ||
48bb5876 DW |
2255 | /* Any units that are bound to this service must also be |
2256 | * restarted. We use JOB_RESTART (instead of the more obvious | |
2257 | * JOB_START) here so that those dependency jobs will be added | |
2258 | * as well. */ | |
50cbaba4 | 2259 | r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_REPLACE, NULL, &error, NULL); |
48bb5876 | 2260 | if (r < 0) |
034c6ed7 LP |
2261 | goto fail; |
2262 | ||
7a0019d3 | 2263 | /* Count the jobs we enqueue for restarting. This counter is maintained as long as the unit isn't fully |
f0c7e594 | 2264 | * stopped, i.e. as long as it remains up or remains in auto-start states. The user can reset the counter |
7a0019d3 LP |
2265 | * explicitly however via the usual "systemctl reset-failure" logic. */ |
2266 | s->n_restarts ++; | |
2267 | s->flush_n_restarts = false; | |
2268 | ||
c2503e35 RH |
2269 | log_unit_struct(UNIT(s), LOG_INFO, |
2270 | "MESSAGE_ID=" SD_MESSAGE_UNIT_RESTART_SCHEDULED_STR, | |
2271 | LOG_UNIT_INVOCATION_ID(UNIT(s)), | |
2272 | LOG_UNIT_MESSAGE(UNIT(s), "Scheduled restart job, restart counter is at %u.", s->n_restarts), | |
2273 | "N_RESTARTS=%u", s->n_restarts); | |
7a0019d3 LP |
2274 | |
2275 | /* Notify clients about changed restart counter */ | |
2276 | unit_add_to_dbus_queue(UNIT(s)); | |
2277 | ||
a8bb2e65 LP |
2278 | /* Note that we stay in the SERVICE_AUTO_RESTART state here, |
2279 | * it will be canceled as part of the service_stop() call that | |
2280 | * is executed as part of JOB_RESTART. */ | |
2281 | ||
034c6ed7 LP |
2282 | return; |
2283 | ||
2284 | fail: | |
2a03b9ed | 2285 | log_unit_warning(UNIT(s), "Failed to schedule restart job: %s", bus_error_message(&error, r)); |
f42806df | 2286 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); |
034c6ed7 LP |
2287 | } |
2288 | ||
308d72dc | 2289 | static void service_enter_reload_by_notify(Service *s) { |
15d167f8 JW |
2290 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
2291 | int r; | |
2292 | ||
308d72dc LP |
2293 | assert(s); |
2294 | ||
36c16a7c | 2295 | service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_start_usec)); |
308d72dc | 2296 | service_set_state(s, SERVICE_RELOAD); |
15d167f8 JW |
2297 | |
2298 | /* service_enter_reload_by_notify is never called during a reload, thus no loops are possible. */ | |
2299 | r = manager_propagate_reload(UNIT(s)->manager, UNIT(s), JOB_FAIL, &error); | |
2300 | if (r < 0) | |
2a03b9ed | 2301 | log_unit_warning(UNIT(s), "Failed to schedule propagation of reload: %s", bus_error_message(&error, r)); |
308d72dc LP |
2302 | } |
2303 | ||
034c6ed7 LP |
2304 | static void service_enter_reload(Service *s) { |
2305 | int r; | |
2306 | ||
2307 | assert(s); | |
2308 | ||
5e94833f | 2309 | service_unwatch_control_pid(s); |
95c906ae | 2310 | s->reload_result = SERVICE_SUCCESS; |
5e94833f | 2311 | |
117dcc57 ZJS |
2312 | s->control_command = s->exec_command[SERVICE_EXEC_RELOAD]; |
2313 | if (s->control_command) { | |
867b3b7d LP |
2314 | s->control_command_id = SERVICE_EXEC_RELOAD; |
2315 | ||
ecedd90f LP |
2316 | r = service_spawn(s, |
2317 | s->control_command, | |
21b2ce39 | 2318 | s->timeout_start_usec, |
78f93209 | 2319 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_CONTROL_CGROUP, |
ecedd90f LP |
2320 | &s->control_pid); |
2321 | if (r < 0) | |
034c6ed7 LP |
2322 | goto fail; |
2323 | ||
80876c20 LP |
2324 | service_set_state(s, SERVICE_RELOAD); |
2325 | } else | |
f42806df | 2326 | service_enter_running(s, SERVICE_SUCCESS); |
034c6ed7 LP |
2327 | |
2328 | return; | |
2329 | ||
2330 | fail: | |
f2341e0a | 2331 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'reload' task: %m"); |
f42806df LP |
2332 | s->reload_result = SERVICE_FAILURE_RESOURCES; |
2333 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
2334 | } |
2335 | ||
f42806df | 2336 | static void service_run_next_control(Service *s) { |
36c16a7c | 2337 | usec_t timeout; |
034c6ed7 LP |
2338 | int r; |
2339 | ||
2340 | assert(s); | |
2341 | assert(s->control_command); | |
2342 | assert(s->control_command->command_next); | |
2343 | ||
34e9ba66 | 2344 | assert(s->control_command_id != SERVICE_EXEC_START); |
034c6ed7 | 2345 | |
34e9ba66 | 2346 | s->control_command = s->control_command->command_next; |
5e94833f LP |
2347 | service_unwatch_control_pid(s); |
2348 | ||
31cd5f63 | 2349 | if (IN_SET(s->state, SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
36c16a7c LP |
2350 | timeout = s->timeout_start_usec; |
2351 | else | |
2352 | timeout = s->timeout_stop_usec; | |
2353 | ||
ecedd90f LP |
2354 | r = service_spawn(s, |
2355 | s->control_command, | |
36c16a7c | 2356 | timeout, |
1703fa41 | 2357 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL| |
31cd5f63 | 2358 | (IN_SET(s->control_command_id, SERVICE_EXEC_CONDITION, SERVICE_EXEC_START_PRE, SERVICE_EXEC_STOP_POST) ? EXEC_APPLY_TTY_STDIN : 0)| |
78f93209 LP |
2359 | (IN_SET(s->control_command_id, SERVICE_EXEC_STOP, SERVICE_EXEC_STOP_POST) ? EXEC_SETENV_RESULT : 0)| |
2360 | (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 |
2361 | &s->control_pid); |
2362 | if (r < 0) | |
034c6ed7 LP |
2363 | goto fail; |
2364 | ||
2365 | return; | |
2366 | ||
2367 | fail: | |
f2341e0a | 2368 | log_unit_warning_errno(UNIT(s), r, "Failed to run next control task: %m"); |
034c6ed7 | 2369 | |
31cd5f63 | 2370 | if (IN_SET(s->state, SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START_POST, SERVICE_STOP)) |
f42806df | 2371 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 | 2372 | else if (s->state == SERVICE_STOP_POST) |
f42806df | 2373 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
e2f3b44c | 2374 | else if (s->state == SERVICE_RELOAD) { |
f42806df LP |
2375 | s->reload_result = SERVICE_FAILURE_RESOURCES; |
2376 | service_enter_running(s, SERVICE_SUCCESS); | |
e2f3b44c | 2377 | } else |
f42806df | 2378 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
5cb5a6ff LP |
2379 | } |
2380 | ||
f42806df | 2381 | static void service_run_next_main(Service *s) { |
34e9ba66 LP |
2382 | pid_t pid; |
2383 | int r; | |
2384 | ||
2385 | assert(s); | |
867b3b7d LP |
2386 | assert(s->main_command); |
2387 | assert(s->main_command->command_next); | |
2388 | assert(s->type == SERVICE_ONESHOT); | |
34e9ba66 | 2389 | |
867b3b7d | 2390 | s->main_command = s->main_command->command_next; |
34e9ba66 LP |
2391 | service_unwatch_main_pid(s); |
2392 | ||
ecedd90f LP |
2393 | r = service_spawn(s, |
2394 | s->main_command, | |
21b2ce39 | 2395 | s->timeout_start_usec, |
1703fa41 | 2396 | EXEC_PASS_FDS|EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_SET_WATCHDOG, |
ecedd90f LP |
2397 | &pid); |
2398 | if (r < 0) | |
34e9ba66 LP |
2399 | goto fail; |
2400 | ||
2401 | service_set_main_pid(s, pid); | |
2402 | ||
2403 | return; | |
2404 | ||
2405 | fail: | |
f2341e0a | 2406 | log_unit_warning_errno(UNIT(s), r, "Failed to run next main task: %m"); |
f42806df | 2407 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
34e9ba66 LP |
2408 | } |
2409 | ||
87f0e418 LP |
2410 | static int service_start(Unit *u) { |
2411 | Service *s = SERVICE(u); | |
07299350 | 2412 | int r; |
5cb5a6ff LP |
2413 | |
2414 | assert(s); | |
2415 | ||
034c6ed7 LP |
2416 | /* We cannot fulfill this request right now, try again later |
2417 | * please! */ | |
a00973af | 2418 | if (IN_SET(s->state, |
c87700a1 | 2419 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 2420 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL, SERVICE_CLEANING)) |
5cb5a6ff LP |
2421 | return -EAGAIN; |
2422 | ||
034c6ed7 | 2423 | /* Already on it! */ |
31cd5f63 | 2424 | if (IN_SET(s->state, SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST)) |
034c6ed7 LP |
2425 | return 0; |
2426 | ||
2e9d6c12 | 2427 | /* A service that will be restarted must be stopped first to |
7f2cddae | 2428 | * trigger BindsTo and/or OnFailure dependencies. If a user |
2e9d6c12 | 2429 | * does not want to wait for the holdoff time to elapse, the |
d4943dc7 LP |
2430 | * service should be manually restarted, not started. We |
2431 | * simply return EAGAIN here, so that any start jobs stay | |
2432 | * queued, and assume that the auto restart timer will | |
2433 | * eventually trigger the restart. */ | |
2434 | if (s->state == SERVICE_AUTO_RESTART) | |
a8bb2e65 | 2435 | return -EAGAIN; |
2e9d6c12 | 2436 | |
a00973af | 2437 | assert(IN_SET(s->state, SERVICE_DEAD, SERVICE_FAILED)); |
5cb5a6ff | 2438 | |
07299350 | 2439 | /* Make sure we don't enter a busy loop of some kind. */ |
97a3f4ee | 2440 | r = unit_test_start_limit(u); |
07299350 LP |
2441 | if (r < 0) { |
2442 | service_enter_dead(s, SERVICE_FAILURE_START_LIMIT_HIT, false); | |
2443 | return r; | |
2444 | } | |
2445 | ||
4b58153d LP |
2446 | r = unit_acquire_invocation_id(u); |
2447 | if (r < 0) | |
2448 | return r; | |
2449 | ||
f42806df LP |
2450 | s->result = SERVICE_SUCCESS; |
2451 | s->reload_result = SERVICE_SUCCESS; | |
034c6ed7 | 2452 | s->main_pid_known = false; |
6dfa5494 | 2453 | s->main_pid_alien = false; |
47342320 | 2454 | s->forbid_restart = false; |
3c7416b6 | 2455 | |
a1e58e8e | 2456 | s->status_text = mfree(s->status_text); |
8cfdb077 LP |
2457 | s->status_errno = 0; |
2458 | ||
308d72dc LP |
2459 | s->notify_state = NOTIFY_UNKNOWN; |
2460 | ||
aa8c4bbf | 2461 | s->watchdog_original_usec = s->watchdog_usec; |
2787d83c | 2462 | s->watchdog_override_enable = false; |
aa8c4bbf | 2463 | s->watchdog_override_usec = USEC_INFINITY; |
2787d83c | 2464 | |
6a1d4d9f LP |
2465 | exec_command_reset_status_list_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); |
2466 | exec_status_reset(&s->main_exec_status); | |
2467 | ||
7a0019d3 LP |
2468 | /* This is not an automatic restart? Flush the restart counter then */ |
2469 | if (s->flush_n_restarts) { | |
2470 | s->n_restarts = 0; | |
2471 | s->flush_n_restarts = false; | |
2472 | } | |
2473 | ||
6a1d4d9f LP |
2474 | u->reset_accounting = true; |
2475 | ||
31cd5f63 | 2476 | service_enter_condition(s); |
82a2b6bb | 2477 | return 1; |
5cb5a6ff LP |
2478 | } |
2479 | ||
87f0e418 LP |
2480 | static int service_stop(Unit *u) { |
2481 | Service *s = SERVICE(u); | |
5cb5a6ff LP |
2482 | |
2483 | assert(s); | |
2484 | ||
a509f0e6 | 2485 | /* Don't create restart jobs from manual stops. */ |
47342320 | 2486 | s->forbid_restart = true; |
034c6ed7 | 2487 | |
e537352b | 2488 | /* Already on it */ |
a00973af | 2489 | if (IN_SET(s->state, |
dc653bf4 | 2490 | SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 2491 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) |
e537352b LP |
2492 | return 0; |
2493 | ||
f0c7b229 | 2494 | /* A restart will be scheduled or is in progress. */ |
034c6ed7 | 2495 | if (s->state == SERVICE_AUTO_RESTART) { |
0c7f15b3 | 2496 | service_set_state(s, SERVICE_DEAD); |
034c6ed7 LP |
2497 | return 0; |
2498 | } | |
2499 | ||
3f6c78dc LP |
2500 | /* If there's already something running we go directly into |
2501 | * kill mode. */ | |
31cd5f63 | 2502 | if (IN_SET(s->state, SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RELOAD, SERVICE_STOP_WATCHDOG)) { |
f42806df | 2503 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
3f6c78dc LP |
2504 | return 0; |
2505 | } | |
5cb5a6ff | 2506 | |
4c2f5842 LP |
2507 | /* If we are currently cleaning, then abort it, brutally. */ |
2508 | if (s->state == SERVICE_CLEANING) { | |
2509 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_SUCCESS); | |
2510 | return 0; | |
2511 | } | |
2512 | ||
a00973af | 2513 | assert(IN_SET(s->state, SERVICE_RUNNING, SERVICE_EXITED)); |
3a762661 | 2514 | |
f42806df | 2515 | service_enter_stop(s, SERVICE_SUCCESS); |
82a2b6bb | 2516 | return 1; |
5cb5a6ff LP |
2517 | } |
2518 | ||
87f0e418 LP |
2519 | static int service_reload(Unit *u) { |
2520 | Service *s = SERVICE(u); | |
034c6ed7 LP |
2521 | |
2522 | assert(s); | |
2523 | ||
3742095b | 2524 | assert(IN_SET(s->state, SERVICE_RUNNING, SERVICE_EXITED)); |
034c6ed7 LP |
2525 | |
2526 | service_enter_reload(s); | |
2d018ae2 | 2527 | return 1; |
5cb5a6ff LP |
2528 | } |
2529 | ||
44a6b1b6 | 2530 | _pure_ static bool service_can_reload(Unit *u) { |
87f0e418 | 2531 | Service *s = SERVICE(u); |
034c6ed7 LP |
2532 | |
2533 | assert(s); | |
2534 | ||
2535 | return !!s->exec_command[SERVICE_EXEC_RELOAD]; | |
2536 | } | |
2537 | ||
e266c068 MS |
2538 | static unsigned service_exec_command_index(Unit *u, ServiceExecCommand id, ExecCommand *current) { |
2539 | Service *s = SERVICE(u); | |
2540 | unsigned idx = 0; | |
2541 | ExecCommand *first, *c; | |
2542 | ||
2543 | assert(s); | |
5b99bd5f LP |
2544 | assert(id >= 0); |
2545 | assert(id < _SERVICE_EXEC_COMMAND_MAX); | |
e266c068 MS |
2546 | |
2547 | first = s->exec_command[id]; | |
2548 | ||
2549 | /* Figure out where we are in the list by walking back to the beginning */ | |
2550 | for (c = current; c != first; c = c->command_prev) | |
2551 | idx++; | |
2552 | ||
2553 | return idx; | |
2554 | } | |
2555 | ||
2556 | static int service_serialize_exec_command(Unit *u, FILE *f, ExecCommand *command) { | |
d68c645b | 2557 | _cleanup_free_ char *args = NULL, *p = NULL; |
e266c068 | 2558 | Service *s = SERVICE(u); |
d68c645b | 2559 | const char *type, *key; |
e266c068 | 2560 | ServiceExecCommand id; |
319a4f4b | 2561 | size_t length = 0; |
e266c068 | 2562 | unsigned idx; |
e266c068 | 2563 | char **arg; |
e266c068 MS |
2564 | |
2565 | assert(s); | |
2566 | assert(f); | |
2567 | ||
2568 | if (!command) | |
2569 | return 0; | |
2570 | ||
2571 | if (command == s->control_command) { | |
2572 | type = "control"; | |
2573 | id = s->control_command_id; | |
2574 | } else { | |
2575 | type = "main"; | |
2576 | id = SERVICE_EXEC_START; | |
2577 | } | |
2578 | ||
2579 | idx = service_exec_command_index(u, id, command); | |
2580 | ||
2581 | STRV_FOREACH(arg, command->argv) { | |
e266c068 | 2582 | _cleanup_free_ char *e = NULL; |
d68c645b | 2583 | size_t n; |
e266c068 | 2584 | |
d68c645b | 2585 | e = cescape(*arg); |
e266c068 | 2586 | if (!e) |
d68c645b | 2587 | return log_oom(); |
e266c068 MS |
2588 | |
2589 | n = strlen(e); | |
319a4f4b | 2590 | if (!GREEDY_REALLOC(args, length + 2 + n + 2)) |
d68c645b | 2591 | return log_oom(); |
e266c068 MS |
2592 | |
2593 | if (length > 0) | |
2594 | args[length++] = ' '; | |
2595 | ||
334c0979 | 2596 | args[length++] = '"'; |
e266c068 MS |
2597 | memcpy(args + length, e, n); |
2598 | length += n; | |
334c0979 | 2599 | args[length++] = '"'; |
e266c068 MS |
2600 | } |
2601 | ||
319a4f4b | 2602 | if (!GREEDY_REALLOC(args, length + 1)) |
d68c645b LP |
2603 | return log_oom(); |
2604 | ||
e266c068 MS |
2605 | args[length++] = 0; |
2606 | ||
d68c645b | 2607 | p = cescape(command->path); |
e266c068 | 2608 | if (!p) |
5b99bd5f | 2609 | return log_oom(); |
e266c068 | 2610 | |
d68c645b | 2611 | key = strjoina(type, "-command"); |
5b99bd5f LP |
2612 | (void) serialize_item_format(f, key, "%s %u %s %s", service_exec_command_to_string(id), idx, p, args); |
2613 | ||
2614 | return 0; | |
e266c068 MS |
2615 | } |
2616 | ||
a16e1123 LP |
2617 | static int service_serialize(Unit *u, FILE *f, FDSet *fds) { |
2618 | Service *s = SERVICE(u); | |
2339fc93 | 2619 | ServiceFDStore *fs; |
a34ceba6 | 2620 | int r; |
a16e1123 LP |
2621 | |
2622 | assert(u); | |
2623 | assert(f); | |
2624 | assert(fds); | |
2625 | ||
d68c645b LP |
2626 | (void) serialize_item(f, "state", service_state_to_string(s->state)); |
2627 | (void) serialize_item(f, "result", service_result_to_string(s->result)); | |
2628 | (void) serialize_item(f, "reload-result", service_result_to_string(s->reload_result)); | |
a16e1123 LP |
2629 | |
2630 | if (s->control_pid > 0) | |
d68c645b | 2631 | (void) serialize_item_format(f, "control-pid", PID_FMT, s->control_pid); |
a16e1123 | 2632 | |
5925dd3c | 2633 | if (s->main_pid_known && s->main_pid > 0) |
d68c645b | 2634 | (void) serialize_item_format(f, "main-pid", PID_FMT, s->main_pid); |
a16e1123 | 2635 | |
d68c645b LP |
2636 | (void) serialize_bool(f, "main-pid-known", s->main_pid_known); |
2637 | (void) serialize_bool(f, "bus-name-good", s->bus_name_good); | |
2638 | (void) serialize_bool(f, "bus-name-owner", s->bus_name_owner); | |
a16e1123 | 2639 | |
d68c645b LP |
2640 | (void) serialize_item_format(f, "n-restarts", "%u", s->n_restarts); |
2641 | (void) serialize_bool(f, "flush-n-restarts", s->flush_n_restarts); | |
7a0019d3 | 2642 | |
d68c645b | 2643 | r = serialize_item_escaped(f, "status-text", s->status_text); |
a34ceba6 LP |
2644 | if (r < 0) |
2645 | return r; | |
3a2776bc | 2646 | |
e266c068 MS |
2647 | service_serialize_exec_command(u, f, s->control_command); |
2648 | service_serialize_exec_command(u, f, s->main_command); | |
a16e1123 | 2649 | |
d68c645b | 2650 | r = serialize_fd(f, fds, "stdin-fd", s->stdin_fd); |
a34ceba6 LP |
2651 | if (r < 0) |
2652 | return r; | |
d68c645b | 2653 | r = serialize_fd(f, fds, "stdout-fd", s->stdout_fd); |
a34ceba6 LP |
2654 | if (r < 0) |
2655 | return r; | |
d68c645b | 2656 | r = serialize_fd(f, fds, "stderr-fd", s->stderr_fd); |
a34ceba6 LP |
2657 | if (r < 0) |
2658 | return r; | |
e44da745 | 2659 | |
5686391b | 2660 | if (s->exec_fd_event_source) { |
d68c645b | 2661 | r = serialize_fd(f, fds, "exec-fd", sd_event_source_get_io_fd(s->exec_fd_event_source)); |
5686391b LP |
2662 | if (r < 0) |
2663 | return r; | |
d68c645b LP |
2664 | |
2665 | (void) serialize_bool(f, "exec-fd-hot", s->exec_fd_hot); | |
5686391b LP |
2666 | } |
2667 | ||
9dfb64f8 | 2668 | if (UNIT_ISSET(s->accept_socket)) { |
d68c645b | 2669 | r = serialize_item(f, "accept-socket", UNIT_DEREF(s->accept_socket)->id); |
9dfb64f8 ZJS |
2670 | if (r < 0) |
2671 | return r; | |
2672 | } | |
2673 | ||
d68c645b | 2674 | r = serialize_fd(f, fds, "socket-fd", s->socket_fd); |
a34ceba6 LP |
2675 | if (r < 0) |
2676 | return r; | |
e44da745 | 2677 | |
2339fc93 | 2678 | LIST_FOREACH(fd_store, fs, s->fd_store) { |
8dd4c05b | 2679 | _cleanup_free_ char *c = NULL; |
2339fc93 LP |
2680 | int copy; |
2681 | ||
2682 | copy = fdset_put_dup(fds, fs->fd); | |
2683 | if (copy < 0) | |
d68c645b | 2684 | return log_error_errno(copy, "Failed to copy file descriptor for serialization: %m"); |
2339fc93 | 2685 | |
8dd4c05b | 2686 | c = cescape(fs->fdname); |
d68c645b LP |
2687 | if (!c) |
2688 | return log_oom(); | |
8dd4c05b | 2689 | |
30520492 | 2690 | (void) serialize_item_format(f, "fd-store-fd", "%i \"%s\" %i", copy, c, fs->do_poll); |
2339fc93 LP |
2691 | } |
2692 | ||
ecdbca40 | 2693 | if (s->main_exec_status.pid > 0) { |
d68c645b LP |
2694 | (void) serialize_item_format(f, "main-exec-status-pid", PID_FMT, s->main_exec_status.pid); |
2695 | (void) serialize_dual_timestamp(f, "main-exec-status-start", &s->main_exec_status.start_timestamp); | |
2696 | (void) serialize_dual_timestamp(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp); | |
ecdbca40 | 2697 | |
799fd0fd | 2698 | if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) { |
d68c645b LP |
2699 | (void) serialize_item_format(f, "main-exec-status-code", "%i", s->main_exec_status.code); |
2700 | (void) serialize_item_format(f, "main-exec-status-status", "%i", s->main_exec_status.status); | |
ecdbca40 LP |
2701 | } |
2702 | } | |
f06db334 | 2703 | |
d68c645b LP |
2704 | (void) serialize_dual_timestamp(f, "watchdog-timestamp", &s->watchdog_timestamp); |
2705 | (void) serialize_bool(f, "forbid-restart", s->forbid_restart); | |
6aca9a58 | 2706 | |
2787d83c | 2707 | if (s->watchdog_override_enable) |
d68c645b | 2708 | (void) serialize_item_format(f, "watchdog-override-usec", USEC_FMT, s->watchdog_override_usec); |
2787d83c | 2709 | |
aa8c4bbf LP |
2710 | if (s->watchdog_original_usec != USEC_INFINITY) |
2711 | (void) serialize_item_format(f, "watchdog-original-usec", USEC_FMT, s->watchdog_original_usec); | |
2712 | ||
a16e1123 LP |
2713 | return 0; |
2714 | } | |
2715 | ||
35243b77 | 2716 | int service_deserialize_exec_command( |
5b99bd5f LP |
2717 | Unit *u, |
2718 | const char *key, | |
2719 | const char *value) { | |
2720 | ||
e266c068 MS |
2721 | Service *s = SERVICE(u); |
2722 | int r; | |
2723 | unsigned idx = 0, i; | |
2724 | bool control, found = false; | |
2725 | ServiceExecCommand id = _SERVICE_EXEC_COMMAND_INVALID; | |
2726 | ExecCommand *command = NULL; | |
6eeec374 | 2727 | _cleanup_free_ char *path = NULL; |
e266c068 MS |
2728 | _cleanup_strv_free_ char **argv = NULL; |
2729 | ||
2730 | enum ExecCommandState { | |
2731 | STATE_EXEC_COMMAND_TYPE, | |
2732 | STATE_EXEC_COMMAND_INDEX, | |
2733 | STATE_EXEC_COMMAND_PATH, | |
2734 | STATE_EXEC_COMMAND_ARGS, | |
2735 | _STATE_EXEC_COMMAND_MAX, | |
2d93c20e | 2736 | _STATE_EXEC_COMMAND_INVALID = -EINVAL, |
e266c068 MS |
2737 | } state; |
2738 | ||
2739 | assert(s); | |
2740 | assert(key); | |
2741 | assert(value); | |
2742 | ||
2743 | control = streq(key, "control-command"); | |
2744 | ||
2745 | state = STATE_EXEC_COMMAND_TYPE; | |
2746 | ||
2747 | for (;;) { | |
2748 | _cleanup_free_ char *arg = NULL; | |
2749 | ||
334c0979 | 2750 | r = extract_first_word(&value, &arg, NULL, EXTRACT_CUNESCAPE | EXTRACT_UNQUOTE); |
efa3f34e LP |
2751 | if (r < 0) |
2752 | return r; | |
e266c068 MS |
2753 | if (r == 0) |
2754 | break; | |
e266c068 MS |
2755 | |
2756 | switch (state) { | |
2757 | case STATE_EXEC_COMMAND_TYPE: | |
2758 | id = service_exec_command_from_string(arg); | |
2759 | if (id < 0) | |
7211c853 | 2760 | return id; |
e266c068 MS |
2761 | |
2762 | state = STATE_EXEC_COMMAND_INDEX; | |
2763 | break; | |
2764 | case STATE_EXEC_COMMAND_INDEX: | |
2765 | r = safe_atou(arg, &idx); | |
2766 | if (r < 0) | |
7211c853 | 2767 | return r; |
e266c068 MS |
2768 | |
2769 | state = STATE_EXEC_COMMAND_PATH; | |
2770 | break; | |
2771 | case STATE_EXEC_COMMAND_PATH: | |
ae2a15bc | 2772 | path = TAKE_PTR(arg); |
e266c068 | 2773 | state = STATE_EXEC_COMMAND_ARGS; |
e266c068 MS |
2774 | break; |
2775 | case STATE_EXEC_COMMAND_ARGS: | |
2776 | r = strv_extend(&argv, arg); | |
2777 | if (r < 0) | |
2778 | return -ENOMEM; | |
2779 | break; | |
2780 | default: | |
04499a70 | 2781 | assert_not_reached(); |
e266c068 MS |
2782 | } |
2783 | } | |
2784 | ||
2785 | if (state != STATE_EXEC_COMMAND_ARGS) | |
2786 | return -EINVAL; | |
90204792 ZJS |
2787 | if (strv_isempty(argv)) |
2788 | return -EINVAL; /* At least argv[0] must be always present. */ | |
e266c068 MS |
2789 | |
2790 | /* Let's check whether exec command on given offset matches data that we just deserialized */ | |
2791 | for (command = s->exec_command[id], i = 0; command; command = command->command_next, i++) { | |
2792 | if (i != idx) | |
2793 | continue; | |
2794 | ||
2795 | found = strv_equal(argv, command->argv) && streq(command->path, path); | |
2796 | break; | |
2797 | } | |
2798 | ||
2799 | if (!found) { | |
2800 | /* Command at the index we serialized is different, let's look for command that exactly | |
2801 | * matches but is on different index. If there is no such command we will not resume execution. */ | |
2802 | for (command = s->exec_command[id]; command; command = command->command_next) | |
2803 | if (strv_equal(command->argv, argv) && streq(command->path, path)) | |
2804 | break; | |
2805 | } | |
2806 | ||
e9da62b1 | 2807 | if (command && control) { |
e266c068 | 2808 | s->control_command = command; |
e9da62b1 LP |
2809 | s->control_command_id = id; |
2810 | } else if (command) | |
e266c068 MS |
2811 | s->main_command = command; |
2812 | else | |
2813 | log_unit_warning(u, "Current command vanished from the unit file, execution of the command list won't be resumed."); | |
2814 | ||
2815 | return 0; | |
2816 | } | |
2817 | ||
a16e1123 LP |
2818 | static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { |
2819 | Service *s = SERVICE(u); | |
2339fc93 | 2820 | int r; |
a16e1123 LP |
2821 | |
2822 | assert(u); | |
2823 | assert(key); | |
2824 | assert(value); | |
2825 | assert(fds); | |
2826 | ||
2827 | if (streq(key, "state")) { | |
2828 | ServiceState state; | |
2829 | ||
117dcc57 ZJS |
2830 | state = service_state_from_string(value); |
2831 | if (state < 0) | |
f2341e0a | 2832 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
2833 | else |
2834 | s->deserialized_state = state; | |
f42806df LP |
2835 | } else if (streq(key, "result")) { |
2836 | ServiceResult f; | |
2837 | ||
2838 | f = service_result_from_string(value); | |
2839 | if (f < 0) | |
f2341e0a | 2840 | log_unit_debug(u, "Failed to parse result value: %s", value); |
f42806df LP |
2841 | else if (f != SERVICE_SUCCESS) |
2842 | s->result = f; | |
2843 | ||
2844 | } else if (streq(key, "reload-result")) { | |
2845 | ServiceResult f; | |
2846 | ||
2847 | f = service_result_from_string(value); | |
2848 | if (f < 0) | |
f2341e0a | 2849 | log_unit_debug(u, "Failed to parse reload result value: %s", value); |
f42806df LP |
2850 | else if (f != SERVICE_SUCCESS) |
2851 | s->reload_result = f; | |
a16e1123 | 2852 | |
a16e1123 | 2853 | } else if (streq(key, "control-pid")) { |
5925dd3c | 2854 | pid_t pid; |
a16e1123 | 2855 | |
e364ad06 | 2856 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2857 | log_unit_debug(u, "Failed to parse control-pid value: %s", value); |
a16e1123 | 2858 | else |
e55224ca | 2859 | s->control_pid = pid; |
a16e1123 | 2860 | } else if (streq(key, "main-pid")) { |
5925dd3c | 2861 | pid_t pid; |
a16e1123 | 2862 | |
e364ad06 | 2863 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2864 | log_unit_debug(u, "Failed to parse main-pid value: %s", value); |
eabd3e56 LP |
2865 | else |
2866 | (void) service_set_main_pid(s, pid); | |
a16e1123 LP |
2867 | } else if (streq(key, "main-pid-known")) { |
2868 | int b; | |
2869 | ||
117dcc57 ZJS |
2870 | b = parse_boolean(value); |
2871 | if (b < 0) | |
f2341e0a | 2872 | log_unit_debug(u, "Failed to parse main-pid-known value: %s", value); |
a16e1123 LP |
2873 | else |
2874 | s->main_pid_known = b; | |
de1d4f9b WF |
2875 | } else if (streq(key, "bus-name-good")) { |
2876 | int b; | |
2877 | ||
2878 | b = parse_boolean(value); | |
2879 | if (b < 0) | |
2880 | log_unit_debug(u, "Failed to parse bus-name-good value: %s", value); | |
2881 | else | |
2882 | s->bus_name_good = b; | |
d8ccf5fd DM |
2883 | } else if (streq(key, "bus-name-owner")) { |
2884 | r = free_and_strdup(&s->bus_name_owner, value); | |
2885 | if (r < 0) | |
2886 | log_unit_error_errno(u, r, "Unable to deserialize current bus owner %s: %m", value); | |
3a2776bc LP |
2887 | } else if (streq(key, "status-text")) { |
2888 | char *t; | |
e437538f | 2889 | ssize_t l; |
3a2776bc | 2890 | |
e437538f ZJS |
2891 | l = cunescape(value, 0, &t); |
2892 | if (l < 0) | |
2893 | log_unit_debug_errno(u, l, "Failed to unescape status text '%s': %m", value); | |
efa3f34e LP |
2894 | else |
2895 | free_and_replace(s->status_text, t); | |
3a2776bc | 2896 | |
9dfb64f8 ZJS |
2897 | } else if (streq(key, "accept-socket")) { |
2898 | Unit *socket; | |
2899 | ||
2900 | r = manager_load_unit(u->manager, value, NULL, NULL, &socket); | |
2901 | if (r < 0) | |
5e1ee764 | 2902 | log_unit_debug_errno(u, r, "Failed to load accept-socket unit '%s': %m", value); |
9dfb64f8 | 2903 | else { |
7f7d01ed | 2904 | unit_ref_set(&s->accept_socket, u, socket); |
9dfb64f8 ZJS |
2905 | SOCKET(socket)->n_connections++; |
2906 | } | |
2907 | ||
a16e1123 LP |
2908 | } else if (streq(key, "socket-fd")) { |
2909 | int fd; | |
2910 | ||
2911 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 2912 | log_unit_debug(u, "Failed to parse socket-fd value: %s", value); |
a16e1123 | 2913 | else { |
574634bc | 2914 | asynchronous_close(s->socket_fd); |
a16e1123 LP |
2915 | s->socket_fd = fdset_remove(fds, fd); |
2916 | } | |
2339fc93 | 2917 | } else if (streq(key, "fd-store-fd")) { |
30520492 | 2918 | _cleanup_free_ char *fdv = NULL, *fdn = NULL, *fdp = NULL; |
2339fc93 | 2919 | int fd; |
30520492 | 2920 | int do_poll; |
2339fc93 | 2921 | |
30520492 KL |
2922 | r = extract_first_word(&value, &fdv, NULL, 0); |
2923 | if (r <= 0 || safe_atoi(fdv, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) { | |
f2341e0a | 2924 | log_unit_debug(u, "Failed to parse fd-store-fd value: %s", value); |
30520492 KL |
2925 | return 0; |
2926 | } | |
8dd4c05b | 2927 | |
30520492 KL |
2928 | r = extract_first_word(&value, &fdn, NULL, EXTRACT_CUNESCAPE | EXTRACT_UNQUOTE); |
2929 | if (r <= 0) { | |
95599cac | 2930 | log_unit_debug(u, "Failed to parse fd-store-fd value: %s", value); |
30520492 KL |
2931 | return 0; |
2932 | } | |
8dd4c05b | 2933 | |
30520492 KL |
2934 | r = extract_first_word(&value, &fdp, NULL, 0); |
2935 | if (r == 0) { | |
2936 | /* If the value is not present, we assume the default */ | |
2937 | do_poll = 1; | |
2938 | } else if (r < 0 || safe_atoi(fdp, &do_poll) < 0) { | |
2939 | log_unit_debug_errno(u, r, "Failed to parse fd-store-fd value \"%s\": %m", value); | |
2940 | return 0; | |
2339fc93 LP |
2941 | } |
2942 | ||
30520492 KL |
2943 | r = service_add_fd_store(s, fd, fdn, do_poll); |
2944 | if (r < 0) | |
2945 | log_unit_error_errno(u, r, "Failed to add fd to store: %m"); | |
2946 | else | |
2947 | fdset_remove(fds, fd); | |
ecdbca40 LP |
2948 | } else if (streq(key, "main-exec-status-pid")) { |
2949 | pid_t pid; | |
2950 | ||
e364ad06 | 2951 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2952 | log_unit_debug(u, "Failed to parse main-exec-status-pid value: %s", value); |
ecdbca40 LP |
2953 | else |
2954 | s->main_exec_status.pid = pid; | |
2955 | } else if (streq(key, "main-exec-status-code")) { | |
2956 | int i; | |
2957 | ||
e364ad06 | 2958 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 2959 | log_unit_debug(u, "Failed to parse main-exec-status-code value: %s", value); |
ecdbca40 LP |
2960 | else |
2961 | s->main_exec_status.code = i; | |
2962 | } else if (streq(key, "main-exec-status-status")) { | |
2963 | int i; | |
2964 | ||
e364ad06 | 2965 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 2966 | log_unit_debug(u, "Failed to parse main-exec-status-status value: %s", value); |
ecdbca40 LP |
2967 | else |
2968 | s->main_exec_status.status = i; | |
799fd0fd | 2969 | } else if (streq(key, "main-exec-status-start")) |
d68c645b | 2970 | deserialize_dual_timestamp(value, &s->main_exec_status.start_timestamp); |
799fd0fd | 2971 | else if (streq(key, "main-exec-status-exit")) |
d68c645b | 2972 | deserialize_dual_timestamp(value, &s->main_exec_status.exit_timestamp); |
a6927d7f | 2973 | else if (streq(key, "watchdog-timestamp")) |
d68c645b | 2974 | deserialize_dual_timestamp(value, &s->watchdog_timestamp); |
613b411c | 2975 | else if (streq(key, "forbid-restart")) { |
6aca9a58 SE |
2976 | int b; |
2977 | ||
2978 | b = parse_boolean(value); | |
2979 | if (b < 0) | |
f2341e0a | 2980 | log_unit_debug(u, "Failed to parse forbid-restart value: %s", value); |
6aca9a58 SE |
2981 | else |
2982 | s->forbid_restart = b; | |
a34ceba6 LP |
2983 | } else if (streq(key, "stdin-fd")) { |
2984 | int fd; | |
2985 | ||
2986 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2987 | log_unit_debug(u, "Failed to parse stdin-fd value: %s", value); | |
2988 | else { | |
2989 | asynchronous_close(s->stdin_fd); | |
2990 | s->stdin_fd = fdset_remove(fds, fd); | |
1e22b5cd | 2991 | s->exec_context.stdio_as_fds = true; |
a34ceba6 LP |
2992 | } |
2993 | } else if (streq(key, "stdout-fd")) { | |
2994 | int fd; | |
2995 | ||
2996 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2997 | log_unit_debug(u, "Failed to parse stdout-fd value: %s", value); | |
2998 | else { | |
2999 | asynchronous_close(s->stdout_fd); | |
3000 | s->stdout_fd = fdset_remove(fds, fd); | |
1e22b5cd | 3001 | s->exec_context.stdio_as_fds = true; |
a34ceba6 LP |
3002 | } |
3003 | } else if (streq(key, "stderr-fd")) { | |
3004 | int fd; | |
3005 | ||
3006 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
3007 | log_unit_debug(u, "Failed to parse stderr-fd value: %s", value); | |
3008 | else { | |
3009 | asynchronous_close(s->stderr_fd); | |
3010 | s->stderr_fd = fdset_remove(fds, fd); | |
1e22b5cd | 3011 | s->exec_context.stdio_as_fds = true; |
a34ceba6 | 3012 | } |
5686391b LP |
3013 | } else if (streq(key, "exec-fd")) { |
3014 | int fd; | |
3015 | ||
3016 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
3017 | log_unit_debug(u, "Failed to parse exec-fd value: %s", value); | |
3018 | else { | |
5dcadb4c | 3019 | s->exec_fd_event_source = sd_event_source_disable_unref(s->exec_fd_event_source); |
5686391b LP |
3020 | |
3021 | fd = fdset_remove(fds, fd); | |
3022 | if (service_allocate_exec_fd_event_source(s, fd, &s->exec_fd_event_source) < 0) | |
3023 | safe_close(fd); | |
3024 | } | |
2787d83c | 3025 | } else if (streq(key, "watchdog-override-usec")) { |
d68c645b | 3026 | if (deserialize_usec(value, &s->watchdog_override_usec) < 0) |
2787d83c | 3027 | log_unit_debug(u, "Failed to parse watchdog_override_usec value: %s", value); |
d68c645b | 3028 | else |
2787d83c | 3029 | s->watchdog_override_enable = true; |
d68c645b | 3030 | |
aa8c4bbf LP |
3031 | } else if (streq(key, "watchdog-original-usec")) { |
3032 | if (deserialize_usec(value, &s->watchdog_original_usec) < 0) | |
3033 | log_unit_debug(u, "Failed to parse watchdog_original_usec value: %s", value); | |
3034 | ||
e266c068 MS |
3035 | } else if (STR_IN_SET(key, "main-command", "control-command")) { |
3036 | r = service_deserialize_exec_command(u, key, value); | |
3037 | if (r < 0) | |
3038 | log_unit_debug_errno(u, r, "Failed to parse serialized command \"%s\": %m", value); | |
7a0019d3 LP |
3039 | |
3040 | } else if (streq(key, "n-restarts")) { | |
3041 | r = safe_atou(value, &s->n_restarts); | |
3042 | if (r < 0) | |
3043 | log_unit_debug_errno(u, r, "Failed to parse serialized restart counter '%s': %m", value); | |
3044 | ||
3045 | } else if (streq(key, "flush-n-restarts")) { | |
3046 | r = parse_boolean(value); | |
3047 | if (r < 0) | |
3048 | log_unit_debug_errno(u, r, "Failed to parse serialized flush restart counter setting '%s': %m", value); | |
3049 | else | |
3050 | s->flush_n_restarts = r; | |
c17ec25e | 3051 | } else |
f2341e0a | 3052 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
3053 | |
3054 | return 0; | |
3055 | } | |
3056 | ||
44a6b1b6 | 3057 | _pure_ static UnitActiveState service_active_state(Unit *u) { |
e056b01d LP |
3058 | const UnitActiveState *table; |
3059 | ||
87f0e418 | 3060 | assert(u); |
5cb5a6ff | 3061 | |
e056b01d LP |
3062 | table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
3063 | ||
3064 | return table[SERVICE(u)->state]; | |
034c6ed7 LP |
3065 | } |
3066 | ||
10a94420 LP |
3067 | static const char *service_sub_state_to_string(Unit *u) { |
3068 | assert(u); | |
3069 | ||
3070 | return service_state_to_string(SERVICE(u)->state); | |
3071 | } | |
3072 | ||
f2f725e5 | 3073 | static bool service_may_gc(Unit *u) { |
701cc384 LP |
3074 | Service *s = SERVICE(u); |
3075 | ||
3076 | assert(s); | |
3077 | ||
e98b2fbb | 3078 | /* Never clean up services that still have a process around, even if the service is formally dead. Note that |
f2f725e5 | 3079 | * unit_may_gc() already checked our cgroup for us, we just check our two additional PIDs, too, in case they |
e98b2fbb LP |
3080 | * have moved outside of the cgroup. */ |
3081 | ||
3082 | if (main_pid_good(s) > 0 || | |
6d55002a | 3083 | control_pid_good(s) > 0) |
f2f725e5 | 3084 | return false; |
6d55002a | 3085 | |
f2f725e5 | 3086 | return true; |
6d55002a LP |
3087 | } |
3088 | ||
3a111838 MS |
3089 | static int service_retry_pid_file(Service *s) { |
3090 | int r; | |
3091 | ||
3092 | assert(s->pid_file); | |
3742095b | 3093 | assert(IN_SET(s->state, SERVICE_START, SERVICE_START_POST)); |
3a111838 MS |
3094 | |
3095 | r = service_load_pid_file(s, false); | |
3096 | if (r < 0) | |
3097 | return r; | |
3098 | ||
3099 | service_unwatch_pid_file(s); | |
3100 | ||
f42806df | 3101 | service_enter_running(s, SERVICE_SUCCESS); |
3a111838 MS |
3102 | return 0; |
3103 | } | |
3104 | ||
3105 | static int service_watch_pid_file(Service *s) { | |
3106 | int r; | |
3107 | ||
f2341e0a | 3108 | log_unit_debug(UNIT(s), "Setting watch for PID file %s", s->pid_file_pathspec->path); |
8bb2d17d | 3109 | |
5686391b | 3110 | r = path_spec_watch(s->pid_file_pathspec, service_dispatch_inotify_io); |
3a111838 MS |
3111 | if (r < 0) |
3112 | goto fail; | |
3113 | ||
3114 | /* the pidfile might have appeared just before we set the watch */ | |
f2341e0a | 3115 | log_unit_debug(UNIT(s), "Trying to read PID file %s in case it changed", s->pid_file_pathspec->path); |
3a111838 MS |
3116 | service_retry_pid_file(s); |
3117 | ||
3118 | return 0; | |
3119 | fail: | |
f2341e0a | 3120 | log_unit_error_errno(UNIT(s), r, "Failed to set a watch for PID file %s: %m", s->pid_file_pathspec->path); |
3a111838 MS |
3121 | service_unwatch_pid_file(s); |
3122 | return r; | |
3123 | } | |
3124 | ||
3125 | static int service_demand_pid_file(Service *s) { | |
3126 | PathSpec *ps; | |
3127 | ||
3128 | assert(s->pid_file); | |
3129 | assert(!s->pid_file_pathspec); | |
3130 | ||
3131 | ps = new0(PathSpec, 1); | |
3132 | if (!ps) | |
3133 | return -ENOMEM; | |
3134 | ||
718db961 | 3135 | ps->unit = UNIT(s); |
3a111838 MS |
3136 | ps->path = strdup(s->pid_file); |
3137 | if (!ps->path) { | |
3138 | free(ps); | |
3139 | return -ENOMEM; | |
3140 | } | |
3141 | ||
4ff361cc | 3142 | path_simplify(ps->path); |
3a111838 MS |
3143 | |
3144 | /* PATH_CHANGED would not be enough. There are daemons (sendmail) that | |
3145 | * keep their PID file open all the time. */ | |
3146 | ps->type = PATH_MODIFIED; | |
3147 | ps->inotify_fd = -1; | |
3148 | ||
3149 | s->pid_file_pathspec = ps; | |
3150 | ||
3151 | return service_watch_pid_file(s); | |
3152 | } | |
3153 | ||
5686391b | 3154 | static int service_dispatch_inotify_io(sd_event_source *source, int fd, uint32_t events, void *userdata) { |
e14c2802 LP |
3155 | PathSpec *p = userdata; |
3156 | Service *s; | |
3157 | ||
3158 | assert(p); | |
3159 | ||
3160 | s = SERVICE(p->unit); | |
3a111838 MS |
3161 | |
3162 | assert(s); | |
3163 | assert(fd >= 0); | |
3742095b | 3164 | assert(IN_SET(s->state, SERVICE_START, SERVICE_START_POST)); |
3a111838 | 3165 | assert(s->pid_file_pathspec); |
57020a3a | 3166 | assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd)); |
3a111838 | 3167 | |
f2341e0a | 3168 | log_unit_debug(UNIT(s), "inotify event"); |
3a111838 | 3169 | |
e14c2802 | 3170 | if (path_spec_fd_event(p, events) < 0) |
3a111838 MS |
3171 | goto fail; |
3172 | ||
3173 | if (service_retry_pid_file(s) == 0) | |
718db961 | 3174 | return 0; |
3a111838 MS |
3175 | |
3176 | if (service_watch_pid_file(s) < 0) | |
3177 | goto fail; | |
3178 | ||
718db961 LP |
3179 | return 0; |
3180 | ||
3a111838 MS |
3181 | fail: |
3182 | service_unwatch_pid_file(s); | |
f42806df | 3183 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
718db961 | 3184 | return 0; |
3a111838 MS |
3185 | } |
3186 | ||
5686391b LP |
3187 | static int service_dispatch_exec_io(sd_event_source *source, int fd, uint32_t events, void *userdata) { |
3188 | Service *s = SERVICE(userdata); | |
3189 | ||
3190 | assert(s); | |
3191 | ||
3192 | log_unit_debug(UNIT(s), "got exec-fd event"); | |
3193 | ||
3194 | /* If Type=exec is set, we'll consider a service started successfully the instant we invoked execve() | |
3195 | * successfully for it. We implement this through a pipe() towards the child, which the kernel automatically | |
3196 | * closes for us due to O_CLOEXEC on execve() in the child, which then triggers EOF on the pipe in the | |
3197 | * parent. We need to be careful however, as there are other reasons that we might cause the child's side of | |
3198 | * the pipe to be closed (for example, a simple exit()). To deal with that we'll ignore EOFs on the pipe unless | |
3199 | * the child signalled us first that it is about to call the execve(). It does so by sending us a simple | |
3200 | * non-zero byte via the pipe. We also provide the child with a way to inform us in case execve() failed: if it | |
3201 | * sends a zero byte we'll ignore POLLHUP on the fd again. */ | |
3202 | ||
3203 | for (;;) { | |
3204 | uint8_t x; | |
3205 | ssize_t n; | |
3206 | ||
3207 | n = read(fd, &x, sizeof(x)); | |
3208 | if (n < 0) { | |
3209 | if (errno == EAGAIN) /* O_NONBLOCK in effect → everything queued has now been processed. */ | |
3210 | return 0; | |
3211 | ||
3212 | return log_unit_error_errno(UNIT(s), errno, "Failed to read from exec_fd: %m"); | |
3213 | } | |
3214 | if (n == 0) { /* EOF → the event we are waiting for */ | |
3215 | ||
5dcadb4c | 3216 | s->exec_fd_event_source = sd_event_source_disable_unref(s->exec_fd_event_source); |
5686391b LP |
3217 | |
3218 | if (s->exec_fd_hot) { /* Did the child tell us to expect EOF now? */ | |
3219 | log_unit_debug(UNIT(s), "Got EOF on exec-fd"); | |
3220 | ||
3221 | s->exec_fd_hot = false; | |
3222 | ||
3223 | /* Nice! This is what we have been waiting for. Transition to next state. */ | |
3224 | if (s->type == SERVICE_EXEC && s->state == SERVICE_START) | |
3225 | service_enter_start_post(s); | |
3226 | } else | |
3227 | log_unit_debug(UNIT(s), "Got EOF on exec-fd while it was disabled, ignoring."); | |
3228 | ||
3229 | return 0; | |
3230 | } | |
3231 | ||
3232 | /* A byte was read → this turns on/off the exec fd logic */ | |
3233 | assert(n == sizeof(x)); | |
3234 | s->exec_fd_hot = x; | |
3235 | } | |
3236 | ||
3237 | return 0; | |
3238 | } | |
3239 | ||
a911bb9a LP |
3240 | static void service_notify_cgroup_empty_event(Unit *u) { |
3241 | Service *s = SERVICE(u); | |
3242 | ||
3243 | assert(u); | |
3244 | ||
a5b5aece | 3245 | log_unit_debug(u, "Control group is empty."); |
a911bb9a LP |
3246 | |
3247 | switch (s->state) { | |
3248 | ||
3249 | /* Waiting for SIGCHLD is usually more interesting, | |
3250 | * because it includes return codes/signals. Which is | |
3251 | * why we ignore the cgroup events for most cases, | |
3252 | * except when we don't know pid which to expect the | |
3253 | * SIGCHLD for. */ | |
3254 | ||
3255 | case SERVICE_START: | |
3c751b1b LP |
3256 | if (s->type == SERVICE_NOTIFY && |
3257 | main_pid_good(s) == 0 && | |
3258 | control_pid_good(s) == 0) { | |
3d474ef7 | 3259 | /* No chance of getting a ready notification anymore */ |
c3fda31d | 3260 | service_enter_stop_post(s, SERVICE_FAILURE_PROTOCOL); |
71e529fc JW |
3261 | break; |
3262 | } | |
3263 | ||
4831981d | 3264 | _fallthrough_; |
71e529fc | 3265 | case SERVICE_START_POST: |
3c751b1b LP |
3266 | if (s->pid_file_pathspec && |
3267 | main_pid_good(s) == 0 && | |
3268 | control_pid_good(s) == 0) { | |
3269 | ||
3d474ef7 | 3270 | /* Give up hoping for the daemon to write its PID file */ |
f2341e0a | 3271 | log_unit_warning(u, "Daemon never wrote its PID file. Failing."); |
8bb2d17d | 3272 | |
a911bb9a LP |
3273 | service_unwatch_pid_file(s); |
3274 | if (s->state == SERVICE_START) | |
c3fda31d | 3275 | service_enter_stop_post(s, SERVICE_FAILURE_PROTOCOL); |
a911bb9a | 3276 | else |
c35755fb | 3277 | service_enter_stop(s, SERVICE_FAILURE_PROTOCOL); |
a911bb9a LP |
3278 | } |
3279 | break; | |
3280 | ||
3281 | case SERVICE_RUNNING: | |
3282 | /* service_enter_running() will figure out what to do */ | |
3283 | service_enter_running(s, SERVICE_SUCCESS); | |
3284 | break; | |
3285 | ||
c87700a1 | 3286 | case SERVICE_STOP_WATCHDOG: |
a911bb9a LP |
3287 | case SERVICE_STOP_SIGTERM: |
3288 | case SERVICE_STOP_SIGKILL: | |
3289 | ||
b13ddbbc | 3290 | if (main_pid_good(s) <= 0 && control_pid_good(s) <= 0) |
a911bb9a LP |
3291 | service_enter_stop_post(s, SERVICE_SUCCESS); |
3292 | ||
3293 | break; | |
3294 | ||
3295 | case SERVICE_STOP_POST: | |
bf760801 | 3296 | case SERVICE_FINAL_WATCHDOG: |
a911bb9a LP |
3297 | case SERVICE_FINAL_SIGTERM: |
3298 | case SERVICE_FINAL_SIGKILL: | |
b13ddbbc | 3299 | if (main_pid_good(s) <= 0 && control_pid_good(s) <= 0) |
a911bb9a LP |
3300 | service_enter_dead(s, SERVICE_SUCCESS, true); |
3301 | ||
3302 | break; | |
3303 | ||
e08dabfe AZ |
3304 | /* If the cgroup empty notification comes when the unit is not active, we must have failed to clean |
3305 | * up the cgroup earlier and should do it now. */ | |
3306 | case SERVICE_DEAD: | |
3307 | case SERVICE_FAILED: | |
3308 | unit_prune_cgroup(u); | |
3309 | break; | |
3310 | ||
a911bb9a LP |
3311 | default: |
3312 | ; | |
3313 | } | |
3314 | } | |
3315 | ||
afcfaa69 LP |
3316 | static void service_notify_cgroup_oom_event(Unit *u) { |
3317 | Service *s = SERVICE(u); | |
3318 | ||
3319 | log_unit_debug(u, "Process of control group was killed by the OOM killer."); | |
3320 | ||
3321 | if (s->oom_policy == OOM_CONTINUE) | |
3322 | return; | |
3323 | ||
3324 | switch (s->state) { | |
3325 | ||
31cd5f63 | 3326 | case SERVICE_CONDITION: |
afcfaa69 LP |
3327 | case SERVICE_START_PRE: |
3328 | case SERVICE_START: | |
3329 | case SERVICE_START_POST: | |
3330 | case SERVICE_STOP: | |
3331 | if (s->oom_policy == OOM_STOP) | |
3332 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_OOM_KILL); | |
3333 | else if (s->oom_policy == OOM_KILL) | |
3334 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_OOM_KILL); | |
3335 | ||
3336 | break; | |
3337 | ||
3338 | case SERVICE_EXITED: | |
3339 | case SERVICE_RUNNING: | |
3340 | if (s->oom_policy == OOM_STOP) | |
3341 | service_enter_stop(s, SERVICE_FAILURE_OOM_KILL); | |
3342 | else if (s->oom_policy == OOM_KILL) | |
3343 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_OOM_KILL); | |
3344 | ||
3345 | break; | |
3346 | ||
3347 | case SERVICE_STOP_WATCHDOG: | |
3348 | case SERVICE_STOP_SIGTERM: | |
3349 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_OOM_KILL); | |
3350 | break; | |
3351 | ||
3352 | case SERVICE_STOP_SIGKILL: | |
3353 | case SERVICE_FINAL_SIGKILL: | |
3354 | if (s->result == SERVICE_SUCCESS) | |
3355 | s->result = SERVICE_FAILURE_OOM_KILL; | |
3356 | break; | |
3357 | ||
3358 | case SERVICE_STOP_POST: | |
3359 | case SERVICE_FINAL_SIGTERM: | |
3360 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_OOM_KILL); | |
3361 | break; | |
3362 | ||
3363 | default: | |
3364 | ; | |
3365 | } | |
3366 | } | |
3367 | ||
87f0e418 | 3368 | static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
5cdabc8d | 3369 | bool notify_dbus = true; |
87f0e418 | 3370 | Service *s = SERVICE(u); |
f42806df | 3371 | ServiceResult f; |
e5123725 | 3372 | ExitClean clean_mode; |
5cb5a6ff LP |
3373 | |
3374 | assert(s); | |
034c6ed7 LP |
3375 | assert(pid >= 0); |
3376 | ||
e5123725 AZ |
3377 | /* Oneshot services and non-SERVICE_EXEC_START commands should not be |
3378 | * considered daemons as they are typically not long running. */ | |
3379 | if (s->type == SERVICE_ONESHOT || (s->control_pid == pid && s->control_command_id != SERVICE_EXEC_START)) | |
3380 | clean_mode = EXIT_CLEAN_COMMAND; | |
3381 | else | |
3382 | clean_mode = EXIT_CLEAN_DAEMON; | |
3383 | ||
3384 | if (is_clean_exit(code, status, clean_mode, &s->success_status)) | |
f42806df LP |
3385 | f = SERVICE_SUCCESS; |
3386 | else if (code == CLD_EXITED) | |
3387 | f = SERVICE_FAILURE_EXIT_CODE; | |
3388 | else if (code == CLD_KILLED) | |
3389 | f = SERVICE_FAILURE_SIGNAL; | |
3390 | else if (code == CLD_DUMPED) | |
3391 | f = SERVICE_FAILURE_CORE_DUMP; | |
d06dacd0 | 3392 | else |
04499a70 | 3393 | assert_not_reached(); |
034c6ed7 | 3394 | |
abaf5edd | 3395 | if (s->main_pid == pid) { |
13bb1ffb ZJS |
3396 | /* Clean up the exec_fd event source. We want to do this here, not later in |
3397 | * service_set_state(), because service_enter_stop_post() calls service_spawn(). | |
3398 | * The source owns its end of the pipe, so this will close that too. */ | |
3399 | s->exec_fd_event_source = sd_event_source_disable_unref(s->exec_fd_event_source); | |
3400 | ||
db01f8b3 MS |
3401 | /* Forking services may occasionally move to a new PID. |
3402 | * As long as they update the PID file before exiting the old | |
3403 | * PID, they're fine. */ | |
db256aab | 3404 | if (service_load_pid_file(s, false) > 0) |
db01f8b3 | 3405 | return; |
034c6ed7 | 3406 | |
034c6ed7 | 3407 | s->main_pid = 0; |
6ea832a2 | 3408 | exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status); |
034c6ed7 | 3409 | |
867b3b7d | 3410 | if (s->main_command) { |
fbeefb45 LP |
3411 | /* If this is not a forking service than the |
3412 | * main process got started and hence we copy | |
3413 | * the exit status so that it is recorded both | |
3414 | * as main and as control process exit | |
3415 | * status */ | |
3416 | ||
867b3b7d | 3417 | s->main_command->exec_status = s->main_exec_status; |
b708e7ce | 3418 | |
3ed0cd26 | 3419 | if (s->main_command->flags & EXEC_COMMAND_IGNORE_FAILURE) |
f42806df | 3420 | f = SERVICE_SUCCESS; |
fbeefb45 LP |
3421 | } else if (s->exec_command[SERVICE_EXEC_START]) { |
3422 | ||
3423 | /* If this is a forked process, then we should | |
3424 | * ignore the return value if this was | |
3425 | * configured for the starter process */ | |
3426 | ||
3ed0cd26 | 3427 | if (s->exec_command[SERVICE_EXEC_START]->flags & EXEC_COMMAND_IGNORE_FAILURE) |
fbeefb45 | 3428 | f = SERVICE_SUCCESS; |
034c6ed7 LP |
3429 | } |
3430 | ||
91bbd9b7 | 3431 | unit_log_process_exit( |
5cc2cd1c | 3432 | u, |
abaf5edd | 3433 | "Main process", |
91bbd9b7 | 3434 | service_exec_command_to_string(SERVICE_EXEC_START), |
5cc2cd1c | 3435 | f == SERVICE_SUCCESS, |
91bbd9b7 | 3436 | code, status); |
f42806df | 3437 | |
a0fef983 | 3438 | if (s->result == SERVICE_SUCCESS) |
f42806df | 3439 | s->result = f; |
034c6ed7 | 3440 | |
867b3b7d LP |
3441 | if (s->main_command && |
3442 | s->main_command->command_next && | |
b58aeb70 | 3443 | s->type == SERVICE_ONESHOT && |
f42806df | 3444 | f == SERVICE_SUCCESS) { |
034c6ed7 | 3445 | |
e78695d4 | 3446 | /* There is another command to execute, so let's do that. */ |
034c6ed7 | 3447 | |
f2341e0a | 3448 | log_unit_debug(u, "Running next main command for state %s.", service_state_to_string(s->state)); |
f42806df | 3449 | service_run_next_main(s); |
034c6ed7 | 3450 | |
34e9ba66 LP |
3451 | } else { |
3452 | ||
e78695d4 | 3453 | /* The service exited, so the service is officially gone. */ |
867b3b7d | 3454 | s->main_command = NULL; |
34e9ba66 LP |
3455 | |
3456 | switch (s->state) { | |
3457 | ||
3458 | case SERVICE_START_POST: | |
3459 | case SERVICE_RELOAD: | |
bbe19f68 PM |
3460 | /* If neither main nor control processes are running then |
3461 | * the current state can never exit cleanly, hence immediately | |
3462 | * terminate the service. */ | |
3463 | if (control_pid_good(s) <= 0) | |
3464 | service_enter_stop(s, f); | |
3465 | ||
8170992a | 3466 | /* Otherwise need to wait until the operation is done. */ |
bbe19f68 PM |
3467 | break; |
3468 | ||
34e9ba66 | 3469 | case SERVICE_STOP: |
e78695d4 | 3470 | /* Need to wait until the operation is done. */ |
c4653a4d | 3471 | break; |
7d55e835 | 3472 | |
34e9ba66 LP |
3473 | case SERVICE_START: |
3474 | if (s->type == SERVICE_ONESHOT) { | |
3475 | /* This was our main goal, so let's go on */ | |
f42806df | 3476 | if (f == SERVICE_SUCCESS) |
34e9ba66 LP |
3477 | service_enter_start_post(s); |
3478 | else | |
c3fda31d | 3479 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
34e9ba66 | 3480 | break; |
3d474ef7 JW |
3481 | } else if (s->type == SERVICE_NOTIFY) { |
3482 | /* Only enter running through a notification, so that the | |
3483 | * SERVICE_START state signifies that no ready notification | |
3484 | * has been received */ | |
3485 | if (f != SERVICE_SUCCESS) | |
c3fda31d | 3486 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
df66b93f JW |
3487 | else if (!s->remain_after_exit || s->notify_access == NOTIFY_MAIN) |
3488 | /* The service has never been and will never be active */ | |
c3fda31d | 3489 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_PROTOCOL); |
3d474ef7 | 3490 | break; |
34e9ba66 | 3491 | } |
034c6ed7 | 3492 | |
4831981d | 3493 | _fallthrough_; |
34e9ba66 | 3494 | case SERVICE_RUNNING: |
f42806df | 3495 | service_enter_running(s, f); |
34e9ba66 | 3496 | break; |
034c6ed7 | 3497 | |
c87700a1 | 3498 | case SERVICE_STOP_WATCHDOG: |
34e9ba66 LP |
3499 | case SERVICE_STOP_SIGTERM: |
3500 | case SERVICE_STOP_SIGKILL: | |
5cb5a6ff | 3501 | |
b13ddbbc | 3502 | if (control_pid_good(s) <= 0) |
f42806df | 3503 | service_enter_stop_post(s, f); |
5cb5a6ff | 3504 | |
34e9ba66 LP |
3505 | /* If there is still a control process, wait for that first */ |
3506 | break; | |
3507 | ||
bf108e55 | 3508 | case SERVICE_STOP_POST: |
c1566ef0 AZ |
3509 | |
3510 | if (control_pid_good(s) <= 0) | |
3511 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, f); | |
3512 | ||
3513 | break; | |
3514 | ||
bf760801 | 3515 | case SERVICE_FINAL_WATCHDOG: |
bf108e55 LP |
3516 | case SERVICE_FINAL_SIGTERM: |
3517 | case SERVICE_FINAL_SIGKILL: | |
3518 | ||
b13ddbbc | 3519 | if (control_pid_good(s) <= 0) |
bf108e55 LP |
3520 | service_enter_dead(s, f, true); |
3521 | break; | |
3522 | ||
34e9ba66 | 3523 | default: |
04499a70 | 3524 | assert_not_reached(); |
34e9ba66 | 3525 | } |
034c6ed7 | 3526 | } |
5cb5a6ff | 3527 | |
034c6ed7 | 3528 | } else if (s->control_pid == pid) { |
58441bc1 ZJS |
3529 | const char *kind; |
3530 | bool success; | |
3531 | ||
34e9ba66 LP |
3532 | s->control_pid = 0; |
3533 | ||
b708e7ce | 3534 | if (s->control_command) { |
8bb2d17d | 3535 | exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status); |
a16e1123 | 3536 | |
3ed0cd26 | 3537 | if (s->control_command->flags & EXEC_COMMAND_IGNORE_FAILURE) |
f42806df | 3538 | f = SERVICE_SUCCESS; |
b708e7ce LP |
3539 | } |
3540 | ||
42e6f549 AZ |
3541 | /* ExecCondition= calls that exit with (0, 254] should invoke skip-like behavior instead of failing */ |
3542 | if (s->state == SERVICE_CONDITION) { | |
3543 | if (f == SERVICE_FAILURE_EXIT_CODE && status < 255) { | |
3544 | UNIT(s)->condition_result = false; | |
3545 | f = SERVICE_SKIP_CONDITION; | |
58441bc1 ZJS |
3546 | success = true; |
3547 | } else if (f == SERVICE_SUCCESS) { | |
42e6f549 | 3548 | UNIT(s)->condition_result = true; |
58441bc1 ZJS |
3549 | success = true; |
3550 | } else | |
3551 | success = false; | |
3552 | ||
3553 | kind = "Condition check process"; | |
3554 | } else { | |
3555 | kind = "Control process"; | |
3556 | success = f == SERVICE_SUCCESS; | |
42e6f549 AZ |
3557 | } |
3558 | ||
91bbd9b7 | 3559 | unit_log_process_exit( |
5cc2cd1c | 3560 | u, |
58441bc1 | 3561 | kind, |
91bbd9b7 | 3562 | service_exec_command_to_string(s->control_command_id), |
58441bc1 | 3563 | success, |
91bbd9b7 | 3564 | code, status); |
f42806df | 3565 | |
d611cfa7 | 3566 | if (s->state != SERVICE_RELOAD && s->result == SERVICE_SUCCESS) |
f42806df | 3567 | s->result = f; |
034c6ed7 | 3568 | |
34e9ba66 LP |
3569 | if (s->control_command && |
3570 | s->control_command->command_next && | |
f42806df | 3571 | f == SERVICE_SUCCESS) { |
034c6ed7 LP |
3572 | |
3573 | /* There is another command to * | |
3574 | * execute, so let's do that. */ | |
3575 | ||
f2341e0a | 3576 | log_unit_debug(u, "Running next control command for state %s.", service_state_to_string(s->state)); |
f42806df | 3577 | service_run_next_control(s); |
034c6ed7 | 3578 | |
80876c20 | 3579 | } else { |
034c6ed7 LP |
3580 | /* No further commands for this step, so let's |
3581 | * figure out what to do next */ | |
3582 | ||
a16e1123 LP |
3583 | s->control_command = NULL; |
3584 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
3585 | ||
f2341e0a | 3586 | log_unit_debug(u, "Got final SIGCHLD for state %s.", service_state_to_string(s->state)); |
bd982a8b | 3587 | |
034c6ed7 LP |
3588 | switch (s->state) { |
3589 | ||
31cd5f63 AZ |
3590 | case SERVICE_CONDITION: |
3591 | if (f == SERVICE_SUCCESS) | |
3592 | service_enter_start_pre(s); | |
3593 | else | |
3594 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); | |
3595 | break; | |
3596 | ||
034c6ed7 | 3597 | case SERVICE_START_PRE: |
f42806df | 3598 | if (f == SERVICE_SUCCESS) |
034c6ed7 LP |
3599 | service_enter_start(s); |
3600 | else | |
c3fda31d | 3601 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
034c6ed7 LP |
3602 | break; |
3603 | ||
3604 | case SERVICE_START: | |
bfba3256 LP |
3605 | if (s->type != SERVICE_FORKING) |
3606 | /* Maybe spurious event due to a reload that changed the type? */ | |
3607 | break; | |
034c6ed7 | 3608 | |
f42806df | 3609 | if (f != SERVICE_SUCCESS) { |
c3fda31d | 3610 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
3a111838 MS |
3611 | break; |
3612 | } | |
034c6ed7 | 3613 | |
3a111838 | 3614 | if (s->pid_file) { |
f42806df LP |
3615 | bool has_start_post; |
3616 | int r; | |
3617 | ||
3a111838 MS |
3618 | /* Let's try to load the pid file here if we can. |
3619 | * The PID file might actually be created by a START_POST | |
3620 | * script. In that case don't worry if the loading fails. */ | |
f42806df | 3621 | |
5d904a6a | 3622 | has_start_post = s->exec_command[SERVICE_EXEC_START_POST]; |
f42806df | 3623 | r = service_load_pid_file(s, !has_start_post); |
3a111838 MS |
3624 | if (!has_start_post && r < 0) { |
3625 | r = service_demand_pid_file(s); | |
b13ddbbc | 3626 | if (r < 0 || cgroup_good(s) == 0) |
c3fda31d | 3627 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_PROTOCOL); |
3a111838 MS |
3628 | break; |
3629 | } | |
034c6ed7 | 3630 | } else |
783e05d6 | 3631 | service_search_main_pid(s); |
034c6ed7 | 3632 | |
3a111838 | 3633 | service_enter_start_post(s); |
034c6ed7 LP |
3634 | break; |
3635 | ||
3636 | case SERVICE_START_POST: | |
f42806df | 3637 | if (f != SERVICE_SUCCESS) { |
ce359e98 | 3638 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
2096e009 | 3639 | break; |
034c6ed7 LP |
3640 | } |
3641 | ||
2096e009 | 3642 | if (s->pid_file) { |
f42806df LP |
3643 | int r; |
3644 | ||
3645 | r = service_load_pid_file(s, true); | |
2096e009 MS |
3646 | if (r < 0) { |
3647 | r = service_demand_pid_file(s); | |
b13ddbbc | 3648 | if (r < 0 || cgroup_good(s) == 0) |
c35755fb | 3649 | service_enter_stop(s, SERVICE_FAILURE_PROTOCOL); |
2096e009 MS |
3650 | break; |
3651 | } | |
3652 | } else | |
783e05d6 | 3653 | service_search_main_pid(s); |
2096e009 | 3654 | |
f42806df | 3655 | service_enter_running(s, SERVICE_SUCCESS); |
3185a36b | 3656 | break; |
034c6ed7 LP |
3657 | |
3658 | case SERVICE_RELOAD: | |
7236ce6e ZJS |
3659 | if (f == SERVICE_SUCCESS) |
3660 | if (service_load_pid_file(s, true) < 0) | |
3661 | service_search_main_pid(s); | |
3185a36b | 3662 | |
f42806df LP |
3663 | s->reload_result = f; |
3664 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
3665 | break; |
3666 | ||
3667 | case SERVICE_STOP: | |
f42806df | 3668 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
034c6ed7 LP |
3669 | break; |
3670 | ||
c87700a1 | 3671 | case SERVICE_STOP_WATCHDOG: |
034c6ed7 LP |
3672 | case SERVICE_STOP_SIGTERM: |
3673 | case SERVICE_STOP_SIGKILL: | |
3674 | if (main_pid_good(s) <= 0) | |
f42806df | 3675 | service_enter_stop_post(s, f); |
034c6ed7 | 3676 | |
846a07b5 | 3677 | /* If there is still a service process around, wait until |
034c6ed7 LP |
3678 | * that one quit, too */ |
3679 | break; | |
3680 | ||
3681 | case SERVICE_STOP_POST: | |
c1566ef0 AZ |
3682 | if (main_pid_good(s) <= 0) |
3683 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, f); | |
3684 | break; | |
3685 | ||
bf760801 | 3686 | case SERVICE_FINAL_WATCHDOG: |
034c6ed7 LP |
3687 | case SERVICE_FINAL_SIGTERM: |
3688 | case SERVICE_FINAL_SIGKILL: | |
bf108e55 LP |
3689 | if (main_pid_good(s) <= 0) |
3690 | service_enter_dead(s, f, true); | |
034c6ed7 LP |
3691 | break; |
3692 | ||
4c2f5842 LP |
3693 | case SERVICE_CLEANING: |
3694 | ||
3695 | if (s->clean_result == SERVICE_SUCCESS) | |
3696 | s->clean_result = f; | |
3697 | ||
3698 | service_enter_dead(s, SERVICE_SUCCESS, false); | |
3699 | break; | |
3700 | ||
034c6ed7 | 3701 | default: |
04499a70 | 3702 | assert_not_reached(); |
034c6ed7 LP |
3703 | } |
3704 | } | |
5cdabc8d LP |
3705 | } else /* Neither control nor main PID? If so, don't notify about anything */ |
3706 | notify_dbus = false; | |
c4e2ceae LP |
3707 | |
3708 | /* Notify clients about changed exit status */ | |
5cdabc8d LP |
3709 | if (notify_dbus) |
3710 | unit_add_to_dbus_queue(u); | |
a911bb9a | 3711 | |
846a07b5 FB |
3712 | /* We watch the main/control process otherwise we can't retrieve the unit they |
3713 | * belong to with cgroupv1. But if they are not our direct child, we won't get a | |
3714 | * SIGCHLD for them. Therefore we need to look for others to watch so we can | |
3715 | * detect when the cgroup becomes empty. Note that the control process is always | |
3716 | * our child so it's pointless to watch all other processes. */ | |
3717 | if (!control_pid_good(s)) | |
3718 | if (!s->main_pid_known || s->main_pid_alien) | |
3719 | (void) unit_enqueue_rewatch_pids(u); | |
034c6ed7 LP |
3720 | } |
3721 | ||
718db961 LP |
3722 | static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
3723 | Service *s = SERVICE(userdata); | |
034c6ed7 LP |
3724 | |
3725 | assert(s); | |
718db961 | 3726 | assert(source == s->timer_event_source); |
034c6ed7 LP |
3727 | |
3728 | switch (s->state) { | |
3729 | ||
31cd5f63 | 3730 | case SERVICE_CONDITION: |
034c6ed7 LP |
3731 | case SERVICE_START_PRE: |
3732 | case SERVICE_START: | |
3733 | case SERVICE_START_POST: | |
bf760801 JK |
3734 | switch (s->timeout_start_failure_mode) { |
3735 | ||
3736 | case SERVICE_TIMEOUT_TERMINATE: | |
3737 | log_unit_warning(UNIT(s), "%s operation timed out. Terminating.", service_state_to_string(s->state)); | |
3738 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); | |
3739 | break; | |
3740 | ||
3741 | case SERVICE_TIMEOUT_ABORT: | |
3742 | log_unit_warning(UNIT(s), "%s operation timed out. Aborting.", service_state_to_string(s->state)); | |
3743 | service_enter_signal(s, SERVICE_STOP_WATCHDOG, SERVICE_FAILURE_TIMEOUT); | |
3744 | break; | |
3745 | ||
3746 | case SERVICE_TIMEOUT_KILL: | |
3747 | if (s->kill_context.send_sigkill) { | |
3748 | log_unit_warning(UNIT(s), "%s operation timed out. Killing.", service_state_to_string(s->state)); | |
3749 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); | |
3750 | } else { | |
3751 | log_unit_warning(UNIT(s), "%s operation timed out. Skipping SIGKILL.", service_state_to_string(s->state)); | |
3752 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); | |
3753 | } | |
3754 | break; | |
3755 | ||
3756 | default: | |
04499a70 | 3757 | assert_not_reached(); |
bf760801 | 3758 | } |
034c6ed7 LP |
3759 | break; |
3760 | ||
36c16a7c LP |
3761 | case SERVICE_RUNNING: |
3762 | log_unit_warning(UNIT(s), "Service reached runtime time limit. Stopping."); | |
3763 | service_enter_stop(s, SERVICE_FAILURE_TIMEOUT); | |
3764 | break; | |
3765 | ||
e2f3b44c | 3766 | case SERVICE_RELOAD: |
089b64d5 | 3767 | log_unit_warning(UNIT(s), "Reload operation timed out. Killing reload process."); |
e9a4f676 | 3768 | service_kill_control_process(s); |
f42806df LP |
3769 | s->reload_result = SERVICE_FAILURE_TIMEOUT; |
3770 | service_enter_running(s, SERVICE_SUCCESS); | |
e2f3b44c LP |
3771 | break; |
3772 | ||
034c6ed7 | 3773 | case SERVICE_STOP: |
bf760801 JK |
3774 | switch (s->timeout_stop_failure_mode) { |
3775 | ||
3776 | case SERVICE_TIMEOUT_TERMINATE: | |
3777 | log_unit_warning(UNIT(s), "Stopping timed out. Terminating."); | |
3778 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); | |
3779 | break; | |
3780 | ||
3781 | case SERVICE_TIMEOUT_ABORT: | |
3782 | log_unit_warning(UNIT(s), "Stopping timed out. Aborting."); | |
3783 | service_enter_signal(s, SERVICE_STOP_WATCHDOG, SERVICE_FAILURE_TIMEOUT); | |
3784 | break; | |
3785 | ||
3786 | case SERVICE_TIMEOUT_KILL: | |
3787 | if (s->kill_context.send_sigkill) { | |
3788 | log_unit_warning(UNIT(s), "Stopping timed out. Killing."); | |
3789 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); | |
3790 | } else { | |
3791 | log_unit_warning(UNIT(s), "Stopping timed out. Skipping SIGKILL."); | |
3792 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); | |
3793 | } | |
3794 | break; | |
3795 | ||
3796 | default: | |
04499a70 | 3797 | assert_not_reached(); |
bf760801 | 3798 | } |
034c6ed7 LP |
3799 | break; |
3800 | ||
c87700a1 | 3801 | case SERVICE_STOP_WATCHDOG: |
bf760801 JK |
3802 | if (s->kill_context.send_sigkill) { |
3803 | log_unit_warning(UNIT(s), "State 'stop-watchdog' timed out. Killing."); | |
3804 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); | |
3805 | } else { | |
3806 | log_unit_warning(UNIT(s), "State 'stop-watchdog' timed out. Skipping SIGKILL."); | |
3807 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); | |
3808 | } | |
db2cb23b UTL |
3809 | break; |
3810 | ||
034c6ed7 | 3811 | case SERVICE_STOP_SIGTERM: |
bf760801 JK |
3812 | if (s->timeout_stop_failure_mode == SERVICE_TIMEOUT_ABORT) { |
3813 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Aborting."); | |
3814 | service_enter_signal(s, SERVICE_STOP_WATCHDOG, SERVICE_FAILURE_TIMEOUT); | |
3815 | } else if (s->kill_context.send_sigkill) { | |
f2341e0a | 3816 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Killing."); |
f42806df | 3817 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 3818 | } else { |
f2341e0a | 3819 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Skipping SIGKILL."); |
f42806df | 3820 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
ba035df2 LP |
3821 | } |
3822 | ||
034c6ed7 LP |
3823 | break; |
3824 | ||
3825 | case SERVICE_STOP_SIGKILL: | |
35b8ca3a | 3826 | /* Uh, we sent a SIGKILL and it is still not gone? |
034c6ed7 LP |
3827 | * Must be something we cannot kill, so let's just be |
3828 | * weirded out and continue */ | |
3829 | ||
f2341e0a | 3830 | log_unit_warning(UNIT(s), "Processes still around after SIGKILL. Ignoring."); |
f42806df | 3831 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3832 | break; |
3833 | ||
3834 | case SERVICE_STOP_POST: | |
bf760801 JK |
3835 | switch (s->timeout_stop_failure_mode) { |
3836 | ||
3837 | case SERVICE_TIMEOUT_TERMINATE: | |
3838 | log_unit_warning(UNIT(s), "State 'stop-post' timed out. Terminating."); | |
3839 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT); | |
3840 | break; | |
3841 | ||
3842 | case SERVICE_TIMEOUT_ABORT: | |
3843 | log_unit_warning(UNIT(s), "State 'stop-post' timed out. Aborting."); | |
3844 | service_enter_signal(s, SERVICE_FINAL_WATCHDOG, SERVICE_FAILURE_TIMEOUT); | |
3845 | break; | |
3846 | ||
3847 | case SERVICE_TIMEOUT_KILL: | |
3848 | if (s->kill_context.send_sigkill) { | |
3849 | log_unit_warning(UNIT(s), "State 'stop-post' timed out. Killing."); | |
3850 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT); | |
3851 | } else { | |
3852 | log_unit_warning(UNIT(s), "State 'stop-post' timed out. Skipping SIGKILL. Entering failed mode."); | |
3853 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false); | |
3854 | } | |
3855 | break; | |
3856 | ||
3857 | default: | |
04499a70 | 3858 | assert_not_reached(); |
bf760801 | 3859 | } |
034c6ed7 LP |
3860 | break; |
3861 | ||
bf760801 | 3862 | case SERVICE_FINAL_WATCHDOG: |
4819ff03 | 3863 | if (s->kill_context.send_sigkill) { |
bf760801 | 3864 | log_unit_warning(UNIT(s), "State 'final-watchdog' timed out. Killing."); |
f42806df | 3865 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 3866 | } else { |
bf760801 JK |
3867 | log_unit_warning(UNIT(s), "State 'final-watchdog' timed out. Skipping SIGKILL. Entering failed mode."); |
3868 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false); | |
3869 | } | |
3870 | break; | |
3871 | ||
3872 | case SERVICE_FINAL_SIGTERM: | |
3873 | if (s->timeout_stop_failure_mode == SERVICE_TIMEOUT_ABORT) { | |
3874 | log_unit_warning(UNIT(s), "State 'final-sigterm' timed out. Aborting."); | |
3875 | service_enter_signal(s, SERVICE_FINAL_WATCHDOG, SERVICE_FAILURE_TIMEOUT); | |
3876 | } else if (s->kill_context.send_sigkill) { | |
3877 | log_unit_warning(UNIT(s), "State 'final-sigterm' timed out. Killing."); | |
3878 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT); | |
3879 | } else { | |
3880 | log_unit_warning(UNIT(s), "State 'final-sigterm' timed out. Skipping SIGKILL. Entering failed mode."); | |
f42806df | 3881 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false); |
ba035df2 LP |
3882 | } |
3883 | ||
034c6ed7 LP |
3884 | break; |
3885 | ||
3886 | case SERVICE_FINAL_SIGKILL: | |
f2341e0a | 3887 | log_unit_warning(UNIT(s), "Processes still around after final SIGKILL. Entering failed mode."); |
f42806df | 3888 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true); |
034c6ed7 LP |
3889 | break; |
3890 | ||
3891 | case SERVICE_AUTO_RESTART: | |
5291f26d | 3892 | if (s->restart_usec > 0) |
868f7d36 ZJS |
3893 | log_unit_debug(UNIT(s), |
3894 | "Service RestartSec=%s expired, scheduling restart.", | |
5291f26d ZJS |
3895 | FORMAT_TIMESPAN(s->restart_usec, USEC_PER_SEC)); |
3896 | else | |
868f7d36 ZJS |
3897 | log_unit_debug(UNIT(s), |
3898 | "Service has no hold-off time (RestartSec=0), scheduling restart."); | |
5ce6e7f5 | 3899 | |
034c6ed7 LP |
3900 | service_enter_restart(s); |
3901 | break; | |
3902 | ||
4c2f5842 LP |
3903 | case SERVICE_CLEANING: |
3904 | log_unit_warning(UNIT(s), "Cleaning timed out. killing."); | |
3905 | ||
3906 | if (s->clean_result == SERVICE_SUCCESS) | |
3907 | s->clean_result = SERVICE_FAILURE_TIMEOUT; | |
3908 | ||
3909 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, 0); | |
3910 | break; | |
3911 | ||
034c6ed7 | 3912 | default: |
04499a70 | 3913 | assert_not_reached(); |
034c6ed7 | 3914 | } |
718db961 LP |
3915 | |
3916 | return 0; | |
3917 | } | |
3918 | ||
3919 | static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata) { | |
3920 | Service *s = SERVICE(userdata); | |
2787d83c | 3921 | usec_t watchdog_usec; |
718db961 LP |
3922 | |
3923 | assert(s); | |
3924 | assert(source == s->watchdog_event_source); | |
3925 | ||
2787d83c M |
3926 | watchdog_usec = service_get_watchdog_usec(s); |
3927 | ||
2a12e32e JK |
3928 | if (UNIT(s)->manager->service_watchdogs) { |
3929 | log_unit_error(UNIT(s), "Watchdog timeout (limit %s)!", | |
5291f26d | 3930 | FORMAT_TIMESPAN(watchdog_usec, 1)); |
8bb2d17d | 3931 | |
c87700a1 | 3932 | service_enter_signal(s, SERVICE_STOP_WATCHDOG, SERVICE_FAILURE_WATCHDOG); |
2a12e32e JK |
3933 | } else |
3934 | log_unit_warning(UNIT(s), "Watchdog disabled! Ignoring watchdog timeout (limit %s)!", | |
5291f26d | 3935 | FORMAT_TIMESPAN(watchdog_usec, 1)); |
842129f5 | 3936 | |
718db961 | 3937 | return 0; |
5cb5a6ff LP |
3938 | } |
3939 | ||
fcee2755 | 3940 | static bool service_notify_message_authorized(Service *s, pid_t pid, FDSet *fds) { |
e3285237 | 3941 | assert(s); |
8c47c732 | 3942 | |
c952c6ec | 3943 | if (s->notify_access == NOTIFY_NONE) { |
e3285237 LP |
3944 | log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception is disabled.", pid); |
3945 | return false; | |
3946 | } | |
3947 | ||
3948 | if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) { | |
336c6e46 | 3949 | if (s->main_pid != 0) |
e3285237 | 3950 | 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 | 3951 | else |
e3285237 LP |
3952 | 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); |
3953 | ||
3954 | return false; | |
3955 | } | |
3956 | ||
3957 | if (s->notify_access == NOTIFY_EXEC && pid != s->main_pid && pid != s->control_pid) { | |
6375bd20 | 3958 | if (s->main_pid != 0 && s->control_pid != 0) |
e3285237 | 3959 | 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 |
3960 | pid, s->main_pid, s->control_pid); |
3961 | else if (s->main_pid != 0) | |
e3285237 | 3962 | 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 | 3963 | else if (s->control_pid != 0) |
e3285237 | 3964 | 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 | 3965 | else |
e3285237 LP |
3966 | 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); |
3967 | ||
3968 | return false; | |
9711848f LP |
3969 | } |
3970 | ||
e3285237 LP |
3971 | return true; |
3972 | } | |
3973 | ||
99b43caf JK |
3974 | static void service_force_watchdog(Service *s) { |
3975 | if (!UNIT(s)->manager->service_watchdogs) | |
3976 | return; | |
3977 | ||
3978 | log_unit_error(UNIT(s), "Watchdog request (last status: %s)!", | |
3979 | s->status_text ? s->status_text : "<unset>"); | |
3980 | ||
3981 | service_enter_signal(s, SERVICE_STOP_WATCHDOG, SERVICE_FAILURE_WATCHDOG); | |
3982 | } | |
3983 | ||
db256aab LP |
3984 | static void service_notify_message( |
3985 | Unit *u, | |
3986 | const struct ucred *ucred, | |
fcee2755 | 3987 | char * const *tags, |
db256aab LP |
3988 | FDSet *fds) { |
3989 | ||
e3285237 LP |
3990 | Service *s = SERVICE(u); |
3991 | bool notify_dbus = false; | |
3992 | const char *e; | |
fcee2755 | 3993 | char * const *i; |
db256aab | 3994 | int r; |
e3285237 LP |
3995 | |
3996 | assert(u); | |
db256aab | 3997 | assert(ucred); |
e3285237 | 3998 | |
fcee2755 | 3999 | if (!service_notify_message_authorized(SERVICE(u), ucred->pid, fds)) |
e3285237 LP |
4000 | return; |
4001 | ||
f1d34068 | 4002 | if (DEBUG_LOGGING) { |
9711848f LP |
4003 | _cleanup_free_ char *cc = NULL; |
4004 | ||
4005 | cc = strv_join(tags, ", "); | |
db256aab | 4006 | log_unit_debug(u, "Got notification message from PID "PID_FMT" (%s)", ucred->pid, isempty(cc) ? "n/a" : cc); |
9711848f | 4007 | } |
c952c6ec | 4008 | |
8c47c732 | 4009 | /* Interpret MAINPID= */ |
28849dba | 4010 | e = strv_find_startswith(tags, "MAINPID="); |
5e56b378 | 4011 | if (e && IN_SET(s->state, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) { |
db256aab LP |
4012 | pid_t new_main_pid; |
4013 | ||
4014 | if (parse_pid(e, &new_main_pid) < 0) | |
4015 | log_unit_warning(u, "Failed to parse MAINPID= field in notification message, ignoring: %s", e); | |
4016 | else if (!s->main_pid_known || new_main_pid != s->main_pid) { | |
4017 | ||
4018 | r = service_is_suitable_main_pid(s, new_main_pid, LOG_WARNING); | |
4019 | if (r == 0) { | |
5238e957 | 4020 | /* The new main PID is a bit suspicious, which is OK if the sender is privileged. */ |
db256aab LP |
4021 | |
4022 | if (ucred->uid == 0) { | |
4023 | 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); | |
4024 | r = 1; | |
4025 | } else | |
4026 | log_unit_debug(u, "New main PID "PID_FMT" does not belong to service, refusing.", new_main_pid); | |
4027 | } | |
4028 | if (r > 0) { | |
4029 | service_set_main_pid(s, new_main_pid); | |
cdc2af3e | 4030 | |
f75f613d | 4031 | r = unit_watch_pid(UNIT(s), new_main_pid, false); |
cdc2af3e LP |
4032 | if (r < 0) |
4033 | log_unit_warning_errno(UNIT(s), r, "Failed to watch new main PID "PID_FMT" for service: %m", new_main_pid); | |
4034 | ||
db256aab LP |
4035 | notify_dbus = true; |
4036 | } | |
8c47c732 LP |
4037 | } |
4038 | } | |
4039 | ||
cc2b7b11 LP |
4040 | /* Interpret READY=/STOPPING=/RELOADING=. Last one wins. */ |
4041 | STRV_FOREACH_BACKWARDS(i, tags) { | |
308d72dc | 4042 | |
cc2b7b11 LP |
4043 | if (streq(*i, "READY=1")) { |
4044 | s->notify_state = NOTIFY_READY; | |
308d72dc | 4045 | |
cc2b7b11 LP |
4046 | /* Type=notify services inform us about completed |
4047 | * initialization with READY=1 */ | |
4048 | if (s->type == SERVICE_NOTIFY && s->state == SERVICE_START) | |
4049 | service_enter_start_post(s); | |
308d72dc | 4050 | |
cc2b7b11 LP |
4051 | /* Sending READY=1 while we are reloading informs us |
4052 | * that the reloading is complete */ | |
4053 | if (s->state == SERVICE_RELOAD && s->control_pid == 0) | |
4054 | service_enter_running(s, SERVICE_SUCCESS); | |
308d72dc | 4055 | |
cc2b7b11 LP |
4056 | notify_dbus = true; |
4057 | break; | |
308d72dc | 4058 | |
cc2b7b11 LP |
4059 | } else if (streq(*i, "RELOADING=1")) { |
4060 | s->notify_state = NOTIFY_RELOADING; | |
308d72dc | 4061 | |
cc2b7b11 LP |
4062 | if (s->state == SERVICE_RUNNING) |
4063 | service_enter_reload_by_notify(s); | |
308d72dc | 4064 | |
cc2b7b11 LP |
4065 | notify_dbus = true; |
4066 | break; | |
308d72dc | 4067 | |
cc2b7b11 LP |
4068 | } else if (streq(*i, "STOPPING=1")) { |
4069 | s->notify_state = NOTIFY_STOPPING; | |
308d72dc | 4070 | |
cc2b7b11 LP |
4071 | if (s->state == SERVICE_RUNNING) |
4072 | service_enter_stop_by_notify(s); | |
308d72dc | 4073 | |
cc2b7b11 LP |
4074 | notify_dbus = true; |
4075 | break; | |
4076 | } | |
8c47c732 LP |
4077 | } |
4078 | ||
4079 | /* Interpret STATUS= */ | |
28849dba | 4080 | e = strv_find_startswith(tags, "STATUS="); |
7f110ff9 | 4081 | if (e) { |
28849dba | 4082 | _cleanup_free_ char *t = NULL; |
8c47c732 | 4083 | |
28849dba | 4084 | if (!isempty(e)) { |
3eac1bca LP |
4085 | /* Note that this size limit check is mostly paranoia: since the datagram size we are willing |
4086 | * to process is already limited to NOTIFY_BUFFER_MAX, this limit here should never be hit. */ | |
4087 | if (strlen(e) > STATUS_TEXT_MAX) | |
4088 | log_unit_warning(u, "Status message overly long (%zu > %u), ignoring.", strlen(e), STATUS_TEXT_MAX); | |
4089 | else if (!utf8_is_valid(e)) | |
4090 | log_unit_warning(u, "Status message in notification message is not UTF-8 clean, ignoring."); | |
28849dba | 4091 | else { |
28849dba LP |
4092 | t = strdup(e); |
4093 | if (!t) | |
4094 | log_oom(); | |
3a2776bc | 4095 | } |
28849dba | 4096 | } |
8c47c732 | 4097 | |
30b5275a | 4098 | if (!streq_ptr(s->status_text, t)) { |
3b319885 | 4099 | free_and_replace(s->status_text, t); |
30b5275a | 4100 | notify_dbus = true; |
28849dba | 4101 | } |
8c47c732 | 4102 | } |
842129f5 | 4103 | |
4774e357 | 4104 | /* Interpret ERRNO= */ |
28849dba | 4105 | e = strv_find_startswith(tags, "ERRNO="); |
4774e357 MAA |
4106 | if (e) { |
4107 | int status_errno; | |
4108 | ||
2fa40742 LP |
4109 | status_errno = parse_errno(e); |
4110 | if (status_errno < 0) | |
4111 | log_unit_warning_errno(u, status_errno, | |
5e1ee764 | 4112 | "Failed to parse ERRNO= field value '%s' in notification message: %m", e); |
2fa40742 LP |
4113 | else if (s->status_errno != status_errno) { |
4114 | s->status_errno = status_errno; | |
4115 | notify_dbus = true; | |
4774e357 MAA |
4116 | } |
4117 | } | |
4118 | ||
a327431b DB |
4119 | /* Interpret EXTEND_TIMEOUT= */ |
4120 | e = strv_find_startswith(tags, "EXTEND_TIMEOUT_USEC="); | |
4121 | if (e) { | |
4122 | usec_t extend_timeout_usec; | |
4123 | if (safe_atou64(e, &extend_timeout_usec) < 0) | |
4124 | log_unit_warning(u, "Failed to parse EXTEND_TIMEOUT_USEC=%s", e); | |
4125 | else | |
4126 | service_extend_timeout(s, extend_timeout_usec); | |
4127 | } | |
4128 | ||
6f285378 | 4129 | /* Interpret WATCHDOG= */ |
99b43caf JK |
4130 | e = strv_find_startswith(tags, "WATCHDOG="); |
4131 | if (e) { | |
4132 | if (streq(e, "1")) | |
4133 | service_reset_watchdog(s); | |
4134 | else if (streq(e, "trigger")) | |
4135 | service_force_watchdog(s); | |
4136 | else | |
4137 | log_unit_warning(u, "Passed WATCHDOG= field is invalid, ignoring."); | |
4138 | } | |
c4e2ceae | 4139 | |
c45d11cb LP |
4140 | e = strv_find_startswith(tags, "WATCHDOG_USEC="); |
4141 | if (e) { | |
4142 | usec_t watchdog_override_usec; | |
4143 | if (safe_atou64(e, &watchdog_override_usec) < 0) | |
4144 | log_unit_warning(u, "Failed to parse WATCHDOG_USEC=%s", e); | |
4145 | else | |
95d0d8ed | 4146 | service_override_watchdog_timeout(s, watchdog_override_usec); |
c45d11cb LP |
4147 | } |
4148 | ||
e78ee06d LP |
4149 | /* Process FD store messages. Either FDSTOREREMOVE=1 for removal, or FDSTORE=1 for addition. In both cases, |
4150 | * process FDNAME= for picking the file descriptor name to use. Note that FDNAME= is required when removing | |
4151 | * fds, but optional when pushing in new fds, for compatibility reasons. */ | |
4152 | if (strv_find(tags, "FDSTOREREMOVE=1")) { | |
4153 | const char *name; | |
4154 | ||
4155 | name = strv_find_startswith(tags, "FDNAME="); | |
4156 | if (!name || !fdname_is_valid(name)) | |
4157 | log_unit_warning(u, "FDSTOREREMOVE=1 requested, but no valid file descriptor name passed, ignoring."); | |
4158 | else | |
4159 | service_remove_fd_store(s, name); | |
4160 | ||
4161 | } else if (strv_find(tags, "FDSTORE=1")) { | |
8dd4c05b LP |
4162 | const char *name; |
4163 | ||
4164 | name = strv_find_startswith(tags, "FDNAME="); | |
4165 | if (name && !fdname_is_valid(name)) { | |
4166 | log_unit_warning(u, "Passed FDNAME= name is invalid, ignoring."); | |
4167 | name = NULL; | |
4168 | } | |
4169 | ||
cb5a46b8 | 4170 | (void) service_add_fd_store_set(s, fds, name, !strv_contains(tags, "FDPOLL=0")); |
8dd4c05b | 4171 | } |
a354329f | 4172 | |
c4e2ceae | 4173 | /* Notify clients about changed status or main pid */ |
30b5275a LP |
4174 | if (notify_dbus) |
4175 | unit_add_to_dbus_queue(u); | |
8c47c732 LP |
4176 | } |
4177 | ||
7a7821c8 | 4178 | static int service_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 4179 | Service *s = SERVICE(u); |
7a7821c8 | 4180 | uint64_t t; |
68db7a3b ZJS |
4181 | int r; |
4182 | ||
4183 | if (!s->timer_event_source) | |
4184 | return 0; | |
4185 | ||
7a7821c8 | 4186 | r = sd_event_source_get_time(s->timer_event_source, &t); |
68db7a3b ZJS |
4187 | if (r < 0) |
4188 | return r; | |
7a7821c8 LP |
4189 | if (t == USEC_INFINITY) |
4190 | return 0; | |
68db7a3b | 4191 | |
7a7821c8 | 4192 | *timeout = t; |
68db7a3b ZJS |
4193 | return 1; |
4194 | } | |
4195 | ||
fc67a943 | 4196 | static void service_bus_name_owner_change(Unit *u, const char *new_owner) { |
05e343b7 LP |
4197 | |
4198 | Service *s = SERVICE(u); | |
718db961 | 4199 | int r; |
05e343b7 LP |
4200 | |
4201 | assert(s); | |
05e343b7 | 4202 | |
fc67a943 LP |
4203 | if (new_owner) |
4204 | log_unit_debug(u, "D-Bus name %s now owned by %s", s->bus_name, new_owner); | |
05e343b7 | 4205 | else |
fc67a943 | 4206 | log_unit_debug(u, "D-Bus name %s now not owned by anyone.", s->bus_name); |
05e343b7 | 4207 | |
d7a0f1f4 | 4208 | s->bus_name_good = new_owner; |
05e343b7 | 4209 | |
d8ccf5fd DM |
4210 | /* Track the current owner, so we can reconstruct changes after a daemon reload */ |
4211 | r = free_and_strdup(&s->bus_name_owner, new_owner); | |
4212 | if (r < 0) { | |
4213 | log_unit_error_errno(u, r, "Unable to set new bus name owner %s: %m", new_owner); | |
4214 | return; | |
4215 | } | |
4216 | ||
05e343b7 LP |
4217 | if (s->type == SERVICE_DBUS) { |
4218 | ||
4219 | /* service_enter_running() will figure out what to | |
4220 | * do */ | |
4221 | if (s->state == SERVICE_RUNNING) | |
f42806df | 4222 | service_enter_running(s, SERVICE_SUCCESS); |
05e343b7 LP |
4223 | else if (s->state == SERVICE_START && new_owner) |
4224 | service_enter_start_post(s); | |
4225 | ||
4226 | } else if (new_owner && | |
4227 | s->main_pid <= 0 && | |
a6951a50 LP |
4228 | IN_SET(s->state, |
4229 | SERVICE_START, | |
4230 | SERVICE_START_POST, | |
4231 | SERVICE_RUNNING, | |
4232 | SERVICE_RELOAD)) { | |
05e343b7 | 4233 | |
4afd3348 | 4234 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; |
718db961 | 4235 | pid_t pid; |
05e343b7 | 4236 | |
718db961 | 4237 | /* Try to acquire PID from bus service */ |
05e343b7 | 4238 | |
a5a8776a | 4239 | r = sd_bus_get_name_creds(u->manager->api_bus, s->bus_name, SD_BUS_CREDS_PID, &creds); |
5b12334d LP |
4240 | if (r >= 0) |
4241 | r = sd_bus_creds_get_pid(creds, &pid); | |
718db961 | 4242 | if (r >= 0) { |
a5a8776a | 4243 | log_unit_debug(u, "D-Bus name %s is now owned by process " PID_FMT, s->bus_name, pid); |
05e343b7 | 4244 | |
718db961 | 4245 | service_set_main_pid(s, pid); |
f75f613d | 4246 | unit_watch_pid(UNIT(s), pid, false); |
718db961 | 4247 | } |
7400b9d2 | 4248 | } |
05e343b7 LP |
4249 | } |
4250 | ||
16115b0a | 4251 | int service_set_socket_fd(Service *s, int fd, Socket *sock, bool selinux_context_net) { |
79a98c60 LP |
4252 | _cleanup_free_ char *peer = NULL; |
4253 | int r; | |
57020a3a | 4254 | |
4f2d528d LP |
4255 | assert(s); |
4256 | assert(fd >= 0); | |
4257 | ||
7f2fbbff LP |
4258 | /* This is called by the socket code when instantiating a new service for a stream socket and the socket needs |
4259 | * to be configured. We take ownership of the passed fd on success. */ | |
4f2d528d | 4260 | |
1124fe6f | 4261 | if (UNIT(s)->load_state != UNIT_LOADED) |
4f2d528d LP |
4262 | return -EINVAL; |
4263 | ||
4264 | if (s->socket_fd >= 0) | |
4265 | return -EBUSY; | |
4266 | ||
4267 | if (s->state != SERVICE_DEAD) | |
4268 | return -EAGAIN; | |
4269 | ||
366b7db4 | 4270 | if (getpeername_pretty(fd, true, &peer) >= 0) { |
79a98c60 LP |
4271 | |
4272 | if (UNIT(s)->description) { | |
c2b2df60 | 4273 | _cleanup_free_ char *a = NULL; |
79a98c60 | 4274 | |
605405c6 | 4275 | a = strjoin(UNIT(s)->description, " (", peer, ")"); |
79a98c60 LP |
4276 | if (!a) |
4277 | return -ENOMEM; | |
4278 | ||
4279 | r = unit_set_description(UNIT(s), a); | |
4280 | } else | |
4281 | r = unit_set_description(UNIT(s), peer); | |
4282 | ||
4283 | if (r < 0) | |
4284 | return r; | |
4285 | } | |
4286 | ||
eef85c4a | 4287 | r = unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false, UNIT_DEPENDENCY_IMPLICIT); |
7f2fbbff LP |
4288 | if (r < 0) |
4289 | return r; | |
4290 | ||
4f2d528d | 4291 | s->socket_fd = fd; |
16115b0a | 4292 | s->socket_fd_selinux_context_net = selinux_context_net; |
6cf6bbc2 | 4293 | |
7f7d01ed | 4294 | unit_ref_set(&s->accept_socket, UNIT(s), UNIT(sock)); |
7f2fbbff | 4295 | return 0; |
4f2d528d LP |
4296 | } |
4297 | ||
fdf20a31 | 4298 | static void service_reset_failed(Unit *u) { |
5632e374 LP |
4299 | Service *s = SERVICE(u); |
4300 | ||
4301 | assert(s); | |
4302 | ||
fdf20a31 | 4303 | if (s->state == SERVICE_FAILED) |
5632e374 LP |
4304 | service_set_state(s, SERVICE_DEAD); |
4305 | ||
f42806df LP |
4306 | s->result = SERVICE_SUCCESS; |
4307 | s->reload_result = SERVICE_SUCCESS; | |
4c2f5842 | 4308 | s->clean_result = SERVICE_SUCCESS; |
7a0019d3 LP |
4309 | s->n_restarts = 0; |
4310 | s->flush_n_restarts = false; | |
5632e374 LP |
4311 | } |
4312 | ||
718db961 | 4313 | static int service_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
8a0867d6 | 4314 | Service *s = SERVICE(u); |
41efeaec | 4315 | |
a6951a50 LP |
4316 | assert(s); |
4317 | ||
814cc562 | 4318 | return unit_kill_common(u, who, signo, s->main_pid, s->control_pid, error); |
8a0867d6 LP |
4319 | } |
4320 | ||
291d565a LP |
4321 | static int service_main_pid(Unit *u) { |
4322 | Service *s = SERVICE(u); | |
4323 | ||
4324 | assert(s); | |
4325 | ||
4326 | return s->main_pid; | |
4327 | } | |
4328 | ||
4329 | static int service_control_pid(Unit *u) { | |
4330 | Service *s = SERVICE(u); | |
4331 | ||
4332 | assert(s); | |
4333 | ||
4334 | return s->control_pid; | |
4335 | } | |
4336 | ||
bb2c7685 LP |
4337 | static bool service_needs_console(Unit *u) { |
4338 | Service *s = SERVICE(u); | |
4339 | ||
4340 | assert(s); | |
4341 | ||
4342 | /* We provide our own implementation of this here, instead of relying of the generic implementation | |
4343 | * unit_needs_console() provides, since we want to return false if we are in SERVICE_EXITED state. */ | |
4344 | ||
4345 | if (!exec_context_may_touch_console(&s->exec_context)) | |
4346 | return false; | |
4347 | ||
4348 | return IN_SET(s->state, | |
31cd5f63 | 4349 | SERVICE_CONDITION, |
bb2c7685 LP |
4350 | SERVICE_START_PRE, |
4351 | SERVICE_START, | |
4352 | SERVICE_START_POST, | |
4353 | SERVICE_RUNNING, | |
4354 | SERVICE_RELOAD, | |
4355 | SERVICE_STOP, | |
c87700a1 | 4356 | SERVICE_STOP_WATCHDOG, |
bb2c7685 LP |
4357 | SERVICE_STOP_SIGTERM, |
4358 | SERVICE_STOP_SIGKILL, | |
4359 | SERVICE_STOP_POST, | |
bf760801 | 4360 | SERVICE_FINAL_WATCHDOG, |
bb2c7685 LP |
4361 | SERVICE_FINAL_SIGTERM, |
4362 | SERVICE_FINAL_SIGKILL); | |
4363 | } | |
4364 | ||
7af67e9a LP |
4365 | static int service_exit_status(Unit *u) { |
4366 | Service *s = SERVICE(u); | |
4367 | ||
4368 | assert(u); | |
4369 | ||
4370 | if (s->main_exec_status.pid <= 0 || | |
4371 | !dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) | |
4372 | return -ENODATA; | |
4373 | ||
4374 | if (s->main_exec_status.code != CLD_EXITED) | |
4375 | return -EBADE; | |
4376 | ||
4377 | return s->main_exec_status.status; | |
4378 | } | |
4379 | ||
5e1669ff ZJS |
4380 | static const char* service_status_text(Unit *u) { |
4381 | Service *s = SERVICE(u); | |
4382 | ||
4383 | assert(s); | |
4384 | ||
4385 | return s->status_text; | |
4386 | } | |
4387 | ||
4c2f5842 LP |
4388 | static int service_clean(Unit *u, ExecCleanMask mask) { |
4389 | _cleanup_strv_free_ char **l = NULL; | |
4390 | Service *s = SERVICE(u); | |
4c2f5842 LP |
4391 | int r; |
4392 | ||
4393 | assert(s); | |
4394 | assert(mask != 0); | |
4395 | ||
4396 | if (s->state != SERVICE_DEAD) | |
4397 | return -EBUSY; | |
4398 | ||
4399 | r = exec_context_get_clean_directories(&s->exec_context, u->manager->prefix, mask, &l); | |
4400 | if (r < 0) | |
4401 | return r; | |
4402 | ||
4403 | if (strv_isempty(l)) | |
4404 | return -EUNATCH; | |
4405 | ||
4406 | service_unwatch_control_pid(s); | |
4407 | s->clean_result = SERVICE_SUCCESS; | |
4408 | s->control_command = NULL; | |
4409 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
4410 | ||
12213aed | 4411 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->exec_context.timeout_clean_usec)); |
4c2f5842 LP |
4412 | if (r < 0) |
4413 | goto fail; | |
4414 | ||
810ef318 | 4415 | r = unit_fork_and_watch_rm_rf(u, l, &s->control_pid); |
4c2f5842 LP |
4416 | if (r < 0) |
4417 | goto fail; | |
4418 | ||
4c2f5842 LP |
4419 | service_set_state(s, SERVICE_CLEANING); |
4420 | ||
4421 | return 0; | |
4422 | ||
4423 | fail: | |
810ef318 | 4424 | log_unit_warning_errno(u, r, "Failed to initiate cleaning: %m"); |
4c2f5842 | 4425 | s->clean_result = SERVICE_FAILURE_RESOURCES; |
5dcadb4c | 4426 | s->timer_event_source = sd_event_source_disable_unref(s->timer_event_source); |
4c2f5842 LP |
4427 | return r; |
4428 | } | |
4429 | ||
4430 | static int service_can_clean(Unit *u, ExecCleanMask *ret) { | |
4431 | Service *s = SERVICE(u); | |
4432 | ||
4433 | assert(s); | |
4434 | ||
4435 | return exec_context_get_clean_mask(&s->exec_context, ret); | |
4436 | } | |
4437 | ||
eda0cbf0 | 4438 | static const char *service_finished_job(Unit *u, JobType t, JobResult result) { |
04d232d8 ZJS |
4439 | if (t == JOB_START && |
4440 | result == JOB_DONE && | |
4441 | SERVICE(u)->type == SERVICE_ONESHOT) | |
4442 | return "Finished %s."; | |
eda0cbf0 ZJS |
4443 | |
4444 | /* Fall back to generic */ | |
4445 | return NULL; | |
4446 | } | |
4447 | ||
94f04347 | 4448 | static const char* const service_restart_table[_SERVICE_RESTART_MAX] = { |
48d83e33 ZJS |
4449 | [SERVICE_RESTART_NO] = "no", |
4450 | [SERVICE_RESTART_ON_SUCCESS] = "on-success", | |
4451 | [SERVICE_RESTART_ON_FAILURE] = "on-failure", | |
6cfe2fde | 4452 | [SERVICE_RESTART_ON_ABNORMAL] = "on-abnormal", |
dc99a976 | 4453 | [SERVICE_RESTART_ON_WATCHDOG] = "on-watchdog", |
48d83e33 ZJS |
4454 | [SERVICE_RESTART_ON_ABORT] = "on-abort", |
4455 | [SERVICE_RESTART_ALWAYS] = "always", | |
94f04347 LP |
4456 | }; |
4457 | ||
4458 | DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart); | |
4459 | ||
4460 | static const char* const service_type_table[_SERVICE_TYPE_MAX] = { | |
48d83e33 | 4461 | [SERVICE_SIMPLE] = "simple", |
0d624a78 | 4462 | [SERVICE_FORKING] = "forking", |
34e9ba66 | 4463 | [SERVICE_ONESHOT] = "oneshot", |
48d83e33 ZJS |
4464 | [SERVICE_DBUS] = "dbus", |
4465 | [SERVICE_NOTIFY] = "notify", | |
4466 | [SERVICE_IDLE] = "idle", | |
4467 | [SERVICE_EXEC] = "exec", | |
94f04347 LP |
4468 | }; |
4469 | ||
4470 | DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType); | |
4471 | ||
e537352b | 4472 | static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = { |
48d83e33 ZJS |
4473 | [SERVICE_EXEC_CONDITION] = "ExecCondition", |
4474 | [SERVICE_EXEC_START_PRE] = "ExecStartPre", | |
4475 | [SERVICE_EXEC_START] = "ExecStart", | |
94f04347 | 4476 | [SERVICE_EXEC_START_POST] = "ExecStartPost", |
48d83e33 ZJS |
4477 | [SERVICE_EXEC_RELOAD] = "ExecReload", |
4478 | [SERVICE_EXEC_STOP] = "ExecStop", | |
4479 | [SERVICE_EXEC_STOP_POST] = "ExecStopPost", | |
94f04347 LP |
4480 | }; |
4481 | ||
4482 | DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand); | |
4483 | ||
b3d59367 | 4484 | static const char* const service_exec_ex_command_table[_SERVICE_EXEC_COMMAND_MAX] = { |
48d83e33 ZJS |
4485 | [SERVICE_EXEC_CONDITION] = "ExecConditionEx", |
4486 | [SERVICE_EXEC_START_PRE] = "ExecStartPreEx", | |
4487 | [SERVICE_EXEC_START] = "ExecStartEx", | |
b3d59367 | 4488 | [SERVICE_EXEC_START_POST] = "ExecStartPostEx", |
48d83e33 ZJS |
4489 | [SERVICE_EXEC_RELOAD] = "ExecReloadEx", |
4490 | [SERVICE_EXEC_STOP] = "ExecStopEx", | |
4491 | [SERVICE_EXEC_STOP_POST] = "ExecStopPostEx", | |
b3d59367 AZ |
4492 | }; |
4493 | ||
4494 | DEFINE_STRING_TABLE_LOOKUP(service_exec_ex_command, ServiceExecCommand); | |
4495 | ||
308d72dc | 4496 | static const char* const notify_state_table[_NOTIFY_STATE_MAX] = { |
48d83e33 ZJS |
4497 | [NOTIFY_UNKNOWN] = "unknown", |
4498 | [NOTIFY_READY] = "ready", | |
308d72dc | 4499 | [NOTIFY_RELOADING] = "reloading", |
48d83e33 | 4500 | [NOTIFY_STOPPING] = "stopping", |
308d72dc LP |
4501 | }; |
4502 | ||
4503 | DEFINE_STRING_TABLE_LOOKUP(notify_state, NotifyState); | |
4504 | ||
f42806df | 4505 | static const char* const service_result_table[_SERVICE_RESULT_MAX] = { |
48d83e33 ZJS |
4506 | [SERVICE_SUCCESS] = "success", |
4507 | [SERVICE_FAILURE_RESOURCES] = "resources", | |
4508 | [SERVICE_FAILURE_PROTOCOL] = "protocol", | |
4509 | [SERVICE_FAILURE_TIMEOUT] = "timeout", | |
4510 | [SERVICE_FAILURE_EXIT_CODE] = "exit-code", | |
4511 | [SERVICE_FAILURE_SIGNAL] = "signal", | |
4512 | [SERVICE_FAILURE_CORE_DUMP] = "core-dump", | |
4513 | [SERVICE_FAILURE_WATCHDOG] = "watchdog", | |
07299350 | 4514 | [SERVICE_FAILURE_START_LIMIT_HIT] = "start-limit-hit", |
48d83e33 ZJS |
4515 | [SERVICE_FAILURE_OOM_KILL] = "oom-kill", |
4516 | [SERVICE_SKIP_CONDITION] = "exec-condition", | |
f42806df LP |
4517 | }; |
4518 | ||
4519 | DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult); | |
4520 | ||
bf760801 JK |
4521 | static const char* const service_timeout_failure_mode_table[_SERVICE_TIMEOUT_FAILURE_MODE_MAX] = { |
4522 | [SERVICE_TIMEOUT_TERMINATE] = "terminate", | |
48d83e33 ZJS |
4523 | [SERVICE_TIMEOUT_ABORT] = "abort", |
4524 | [SERVICE_TIMEOUT_KILL] = "kill", | |
bf760801 JK |
4525 | }; |
4526 | ||
4527 | DEFINE_STRING_TABLE_LOOKUP(service_timeout_failure_mode, ServiceTimeoutFailureMode); | |
4528 | ||
87f0e418 | 4529 | const UnitVTable service_vtable = { |
7d17cfbc | 4530 | .object_size = sizeof(Service), |
718db961 LP |
4531 | .exec_context_offset = offsetof(Service, exec_context), |
4532 | .cgroup_context_offset = offsetof(Service, cgroup_context), | |
4533 | .kill_context_offset = offsetof(Service, kill_context), | |
613b411c | 4534 | .exec_runtime_offset = offsetof(Service, exec_runtime), |
29206d46 | 4535 | .dynamic_creds_offset = offsetof(Service, dynamic_creds), |
3ef63c31 | 4536 | |
f975e971 LP |
4537 | .sections = |
4538 | "Unit\0" | |
4539 | "Service\0" | |
4540 | "Install\0", | |
4ad49000 | 4541 | .private_section = "Service", |
71645aca | 4542 | |
1d9cc876 LP |
4543 | .can_transient = true, |
4544 | .can_delegate = true, | |
c80a9a33 | 4545 | .can_fail = true, |
4d824a4e | 4546 | .can_set_managed_oom = true, |
1d9cc876 | 4547 | |
034c6ed7 LP |
4548 | .init = service_init, |
4549 | .done = service_done, | |
a16e1123 | 4550 | .load = service_load, |
a354329f | 4551 | .release_resources = service_release_resources, |
a16e1123 LP |
4552 | |
4553 | .coldplug = service_coldplug, | |
034c6ed7 | 4554 | |
5cb5a6ff LP |
4555 | .dump = service_dump, |
4556 | ||
4557 | .start = service_start, | |
4558 | .stop = service_stop, | |
4559 | .reload = service_reload, | |
4560 | ||
034c6ed7 LP |
4561 | .can_reload = service_can_reload, |
4562 | ||
8a0867d6 | 4563 | .kill = service_kill, |
4c2f5842 LP |
4564 | .clean = service_clean, |
4565 | .can_clean = service_can_clean, | |
8a0867d6 | 4566 | |
d9e45bc3 MS |
4567 | .freeze = unit_freeze_vtable_common, |
4568 | .thaw = unit_thaw_vtable_common, | |
4569 | ||
a16e1123 LP |
4570 | .serialize = service_serialize, |
4571 | .deserialize_item = service_deserialize_item, | |
4572 | ||
5cb5a6ff | 4573 | .active_state = service_active_state, |
10a94420 | 4574 | .sub_state_to_string = service_sub_state_to_string, |
5cb5a6ff | 4575 | |
deb4e708 MK |
4576 | .will_restart = service_will_restart, |
4577 | ||
f2f725e5 | 4578 | .may_gc = service_may_gc, |
701cc384 | 4579 | |
034c6ed7 | 4580 | .sigchld_event = service_sigchld_event, |
2c4104f0 | 4581 | |
fdf20a31 | 4582 | .reset_failed = service_reset_failed, |
5632e374 | 4583 | |
4ad49000 | 4584 | .notify_cgroup_empty = service_notify_cgroup_empty_event, |
afcfaa69 | 4585 | .notify_cgroup_oom = service_notify_cgroup_oom_event, |
8c47c732 | 4586 | .notify_message = service_notify_message, |
8e274523 | 4587 | |
291d565a LP |
4588 | .main_pid = service_main_pid, |
4589 | .control_pid = service_control_pid, | |
4590 | ||
05e343b7 | 4591 | .bus_name_owner_change = service_bus_name_owner_change, |
05e343b7 | 4592 | |
74c964d3 LP |
4593 | .bus_set_property = bus_service_set_property, |
4594 | .bus_commit_properties = bus_service_commit_properties, | |
4139c1b2 | 4595 | |
68db7a3b | 4596 | .get_timeout = service_get_timeout, |
bb2c7685 | 4597 | .needs_console = service_needs_console, |
7af67e9a | 4598 | .exit_status = service_exit_status, |
5e1669ff | 4599 | .status_text = service_status_text, |
718db961 | 4600 | |
c6918296 | 4601 | .status_message_formats = { |
c6918296 | 4602 | .finished_start_job = { |
c6918296 | 4603 | [JOB_FAILED] = "Failed to start %s.", |
c6918296 MS |
4604 | }, |
4605 | .finished_stop_job = { | |
4606 | [JOB_DONE] = "Stopped %s.", | |
4607 | [JOB_FAILED] = "Stopped (with error) %s.", | |
c6918296 | 4608 | }, |
eda0cbf0 | 4609 | .finished_job = service_finished_job, |
c6918296 | 4610 | }, |
5cb5a6ff | 4611 | }; |