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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 | ||
718db961 | 199 | s->watchdog_event_source = sd_event_source_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 | ||
718db961 | 398 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
5686391b | 399 | s->exec_fd_event_source = sd_event_source_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 | ||
a7f49f0b | 671 | if (s->type != SERVICE_DBUS) |
45f06b34 LP |
672 | return 0; |
673 | ||
35d8c19a | 674 | r = unit_add_dependency_by_name(UNIT(s), UNIT_REQUIRES, SPECIAL_DBUS_SOCKET, true, UNIT_DEPENDENCY_FILE); |
222953e8 DR |
675 | if (r < 0) |
676 | return log_unit_error_errno(UNIT(s), r, "Failed to add dependency on " SPECIAL_DBUS_SOCKET ": %m"); | |
45f06b34 | 677 | |
a132bef0 | 678 | /* We always want to be ordered against dbus.socket if both are in the transaction. */ |
35d8c19a | 679 | r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_DBUS_SOCKET, true, UNIT_DEPENDENCY_FILE); |
45f06b34 | 680 | if (r < 0) |
92bed462 | 681 | return log_unit_error_errno(UNIT(s), r, "Failed to add dependency on " SPECIAL_DBUS_SOCKET ": %m"); |
45f06b34 LP |
682 | |
683 | r = unit_watch_bus_name(UNIT(s), s->bus_name); | |
684 | if (r == -EEXIST) | |
685 | return log_unit_error_errno(UNIT(s), r, "Two services allocated for the same bus name %s, refusing operation.", s->bus_name); | |
686 | if (r < 0) | |
687 | return log_unit_error_errno(UNIT(s), r, "Cannot watch bus name %s: %m", s->bus_name); | |
688 | ||
689 | return 0; | |
690 | } | |
691 | ||
8545f7ce LP |
692 | static int service_add_extras(Service *s) { |
693 | int r; | |
694 | ||
695 | assert(s); | |
696 | ||
697 | if (s->type == _SERVICE_TYPE_INVALID) { | |
698 | /* Figure out a type automatically */ | |
699 | if (s->bus_name) | |
700 | s->type = SERVICE_DBUS; | |
701 | else if (s->exec_command[SERVICE_EXEC_START]) | |
702 | s->type = SERVICE_SIMPLE; | |
703 | else | |
704 | s->type = SERVICE_ONESHOT; | |
705 | } | |
706 | ||
707 | /* Oneshot services have disabled start timeout by default */ | |
708 | if (s->type == SERVICE_ONESHOT && !s->start_timeout_defined) | |
36c16a7c | 709 | s->timeout_start_usec = USEC_INFINITY; |
8545f7ce | 710 | |
3b7f79dc | 711 | service_fix_stdio(s); |
8545f7ce LP |
712 | |
713 | r = unit_patch_contexts(UNIT(s)); | |
714 | if (r < 0) | |
715 | return r; | |
716 | ||
717 | r = unit_add_exec_dependencies(UNIT(s), &s->exec_context); | |
718 | if (r < 0) | |
719 | return r; | |
720 | ||
d79200e2 | 721 | r = unit_set_default_slice(UNIT(s)); |
8545f7ce LP |
722 | if (r < 0) |
723 | return r; | |
724 | ||
4330dc03 AJ |
725 | /* If the service needs the notify socket, let's enable it automatically. */ |
726 | if (s->notify_access == NOTIFY_NONE && | |
727 | (s->type == SERVICE_NOTIFY || s->watchdog_usec > 0 || s->n_fd_store_max > 0)) | |
8545f7ce LP |
728 | s->notify_access = NOTIFY_MAIN; |
729 | ||
afcfaa69 LP |
730 | /* If no OOM policy was explicitly set, then default to the configure default OOM policy. Except when |
731 | * delegation is on, in that case it we assume the payload knows better what to do and can process | |
5238e957 | 732 | * things in a more focused way. */ |
afcfaa69 LP |
733 | if (s->oom_policy < 0) |
734 | s->oom_policy = s->cgroup_context.delegate ? OOM_CONTINUE : UNIT(s)->manager->default_oom_policy; | |
735 | ||
736 | /* Let the kernel do the killing if that's requested. */ | |
737 | s->cgroup_context.memory_oom_group = s->oom_policy == OOM_KILL; | |
738 | ||
45f06b34 LP |
739 | r = service_add_default_dependencies(s); |
740 | if (r < 0) | |
741 | return r; | |
8545f7ce | 742 | |
45f06b34 LP |
743 | r = service_setup_bus_name(s); |
744 | if (r < 0) | |
745 | return r; | |
8545f7ce LP |
746 | |
747 | return 0; | |
748 | } | |
749 | ||
e537352b | 750 | static int service_load(Unit *u) { |
e537352b | 751 | Service *s = SERVICE(u); |
8bb2d17d | 752 | int r; |
e537352b | 753 | |
e0cfed4c | 754 | r = unit_load_fragment_and_dropin(u, true); |
c2756a68 | 755 | if (r < 0) |
5cb5a6ff LP |
756 | return r; |
757 | ||
e0cfed4c ZJS |
758 | if (u->load_state != UNIT_LOADED) |
759 | return 0; | |
034c6ed7 | 760 | |
23a177ef | 761 | /* This is a new unit? Then let's add in some extras */ |
e0cfed4c ZJS |
762 | r = service_add_extras(s); |
763 | if (r < 0) | |
764 | return r; | |
8e274523 | 765 | |
243b1432 | 766 | return service_verify(s); |
034c6ed7 LP |
767 | } |
768 | ||
87f0e418 | 769 | static void service_dump(Unit *u, FILE *f, const char *prefix) { |
4c2f5842 | 770 | char buf_restart[FORMAT_TIMESPAN_MAX], buf_start[FORMAT_TIMESPAN_MAX], buf_stop[FORMAT_TIMESPAN_MAX], |
12213aed | 771 | buf_runtime[FORMAT_TIMESPAN_MAX], buf_watchdog[FORMAT_TIMESPAN_MAX], buf_abort[FORMAT_TIMESPAN_MAX]; |
5cb5a6ff | 772 | ServiceExecCommand c; |
87f0e418 | 773 | Service *s = SERVICE(u); |
47be870b | 774 | const char *prefix2; |
5cb5a6ff LP |
775 | |
776 | assert(s); | |
777 | ||
4c940960 | 778 | prefix = strempty(prefix); |
63c372cb | 779 | prefix2 = strjoina(prefix, "\t"); |
44d8db9e | 780 | |
5cb5a6ff | 781 | fprintf(f, |
81a2b7ce | 782 | "%sService State: %s\n" |
f42806df LP |
783 | "%sResult: %s\n" |
784 | "%sReload Result: %s\n" | |
4c2f5842 | 785 | "%sClean Result: %s\n" |
81a2b7ce | 786 | "%sPermissionsStartOnly: %s\n" |
8e274523 | 787 | "%sRootDirectoryStartOnly: %s\n" |
02ee865a | 788 | "%sRemainAfterExit: %s\n" |
3185a36b | 789 | "%sGuessMainPID: %s\n" |
c952c6ec | 790 | "%sType: %s\n" |
2cf3143a | 791 | "%sRestart: %s\n" |
308d72dc | 792 | "%sNotifyAccess: %s\n" |
afcfaa69 LP |
793 | "%sNotifyState: %s\n" |
794 | "%sOOMPolicy: %s\n", | |
81a2b7ce | 795 | prefix, service_state_to_string(s->state), |
f42806df LP |
796 | prefix, service_result_to_string(s->result), |
797 | prefix, service_result_to_string(s->reload_result), | |
4c2f5842 | 798 | prefix, service_result_to_string(s->clean_result), |
81a2b7ce | 799 | prefix, yes_no(s->permissions_start_only), |
8e274523 | 800 | prefix, yes_no(s->root_directory_start_only), |
02ee865a | 801 | prefix, yes_no(s->remain_after_exit), |
3185a36b | 802 | prefix, yes_no(s->guess_main_pid), |
c952c6ec | 803 | prefix, service_type_to_string(s->type), |
2cf3143a | 804 | prefix, service_restart_to_string(s->restart), |
308d72dc | 805 | prefix, notify_access_to_string(s->notify_access), |
afcfaa69 LP |
806 | prefix, notify_state_to_string(s->notify_state), |
807 | prefix, oom_policy_to_string(s->oom_policy)); | |
5cb5a6ff | 808 | |
70123e68 LP |
809 | if (s->control_pid > 0) |
810 | fprintf(f, | |
ccd06097 ZJS |
811 | "%sControl PID: "PID_FMT"\n", |
812 | prefix, s->control_pid); | |
70123e68 LP |
813 | |
814 | if (s->main_pid > 0) | |
815 | fprintf(f, | |
ccd06097 | 816 | "%sMain PID: "PID_FMT"\n" |
6dfa5494 LP |
817 | "%sMain PID Known: %s\n" |
818 | "%sMain PID Alien: %s\n", | |
ccd06097 | 819 | prefix, s->main_pid, |
6dfa5494 LP |
820 | prefix, yes_no(s->main_pid_known), |
821 | prefix, yes_no(s->main_pid_alien)); | |
70123e68 | 822 | |
034c6ed7 LP |
823 | if (s->pid_file) |
824 | fprintf(f, | |
825 | "%sPIDFile: %s\n", | |
826 | prefix, s->pid_file); | |
827 | ||
05e343b7 LP |
828 | if (s->bus_name) |
829 | fprintf(f, | |
830 | "%sBusName: %s\n" | |
831 | "%sBus Name Good: %s\n", | |
832 | prefix, s->bus_name, | |
833 | prefix, yes_no(s->bus_name_good)); | |
834 | ||
9dfb64f8 ZJS |
835 | if (UNIT_ISSET(s->accept_socket)) |
836 | fprintf(f, | |
837 | "%sAccept Socket: %s\n", | |
838 | prefix, UNIT_DEREF(s->accept_socket)->id); | |
839 | ||
c9d41699 YW |
840 | fprintf(f, |
841 | "%sRestartSec: %s\n" | |
842 | "%sTimeoutStartSec: %s\n" | |
bf760801 JK |
843 | "%sTimeoutStopSec: %s\n" |
844 | "%sTimeoutStartFailureMode: %s\n" | |
845 | "%sTimeoutStopFailureMode: %s\n", | |
c9d41699 YW |
846 | prefix, format_timespan(buf_restart, sizeof(buf_restart), s->restart_usec, USEC_PER_SEC), |
847 | prefix, format_timespan(buf_start, sizeof(buf_start), s->timeout_start_usec, USEC_PER_SEC), | |
bf760801 JK |
848 | prefix, format_timespan(buf_stop, sizeof(buf_stop), s->timeout_stop_usec, USEC_PER_SEC), |
849 | prefix, service_timeout_failure_mode_to_string(s->timeout_start_failure_mode), | |
850 | prefix, service_timeout_failure_mode_to_string(s->timeout_stop_failure_mode)); | |
dcab85be YW |
851 | |
852 | if (s->timeout_abort_set) | |
853 | fprintf(f, | |
854 | "%sTimeoutAbortSec: %s\n", | |
855 | prefix, format_timespan(buf_abort, sizeof(buf_abort), s->timeout_abort_usec, USEC_PER_SEC)); | |
856 | ||
857 | fprintf(f, | |
858 | "%sRuntimeMaxSec: %s\n" | |
859 | "%sWatchdogSec: %s\n", | |
c9d41699 YW |
860 | prefix, format_timespan(buf_runtime, sizeof(buf_runtime), s->runtime_max_usec, USEC_PER_SEC), |
861 | prefix, format_timespan(buf_watchdog, sizeof(buf_watchdog), s->watchdog_usec, USEC_PER_SEC)); | |
862 | ||
4819ff03 | 863 | kill_context_dump(&s->kill_context, f, prefix); |
5cb5a6ff LP |
864 | exec_context_dump(&s->exec_context, f, prefix); |
865 | ||
e537352b | 866 | for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) { |
5cb5a6ff | 867 | |
44d8db9e LP |
868 | if (!s->exec_command[c]) |
869 | continue; | |
870 | ||
40d50879 | 871 | fprintf(f, "%s-> %s:\n", |
94f04347 | 872 | prefix, service_exec_command_to_string(c)); |
44d8db9e LP |
873 | |
874 | exec_command_dump_list(s->exec_command[c], f, prefix2); | |
5cb5a6ff | 875 | } |
44d8db9e | 876 | |
8c47c732 LP |
877 | if (s->status_text) |
878 | fprintf(f, "%sStatus Text: %s\n", | |
879 | prefix, s->status_text); | |
a354329f | 880 | |
ece174c5 | 881 | if (s->n_fd_store_max > 0) |
a354329f LP |
882 | fprintf(f, |
883 | "%sFile Descriptor Store Max: %u\n" | |
da6053d0 | 884 | "%sFile Descriptor Store Current: %zu\n", |
a354329f LP |
885 | prefix, s->n_fd_store_max, |
886 | prefix, s->n_fd_store); | |
18f573aa | 887 | |
bc0623df | 888 | cgroup_context_dump(UNIT(s), f, prefix); |
5cb5a6ff LP |
889 | } |
890 | ||
db256aab LP |
891 | static int service_is_suitable_main_pid(Service *s, pid_t pid, int prio) { |
892 | Unit *owner; | |
893 | ||
894 | assert(s); | |
895 | assert(pid_is_valid(pid)); | |
896 | ||
897 | /* Checks whether the specified PID is suitable as main PID for this service. returns negative if not, 0 if the | |
898 | * PID is questionnable but should be accepted if the source of configuration is trusted. > 0 if the PID is | |
899 | * good */ | |
900 | ||
d85ff944 YW |
901 | if (pid == getpid_cached() || pid == 1) |
902 | return log_unit_full_errno(UNIT(s), prio, SYNTHETIC_ERRNO(EPERM), "New main PID "PID_FMT" is the manager, refusing.", pid); | |
db256aab | 903 | |
d85ff944 YW |
904 | if (pid == s->control_pid) |
905 | return log_unit_full_errno(UNIT(s), prio, SYNTHETIC_ERRNO(EPERM), "New main PID "PID_FMT" is the control process, refusing.", pid); | |
db256aab | 906 | |
d85ff944 YW |
907 | if (!pid_is_alive(pid)) |
908 | 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 |
909 | |
910 | owner = manager_get_unit_by_pid(UNIT(s)->manager, pid); | |
911 | if (owner == UNIT(s)) { | |
912 | log_unit_debug(UNIT(s), "New main PID "PID_FMT" belongs to service, we are happy.", pid); | |
913 | return 1; /* Yay, it's definitely a good PID */ | |
914 | } | |
915 | ||
916 | return 0; /* Hmm it's a suspicious PID, let's accept it if configuration source is trusted */ | |
917 | } | |
918 | ||
c5419d42 | 919 | static int service_load_pid_file(Service *s, bool may_warn) { |
db256aab | 920 | char procfs[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; |
73969ab6 | 921 | bool questionable_pid_file = false; |
7fd1b19b | 922 | _cleanup_free_ char *k = NULL; |
db256aab LP |
923 | _cleanup_close_ int fd = -1; |
924 | int r, prio; | |
5925dd3c | 925 | pid_t pid; |
034c6ed7 LP |
926 | |
927 | assert(s); | |
928 | ||
034c6ed7 | 929 | if (!s->pid_file) |
13230d5d | 930 | return -ENOENT; |
034c6ed7 | 931 | |
db256aab LP |
932 | prio = may_warn ? LOG_INFO : LOG_DEBUG; |
933 | ||
a5648b80 ZJS |
934 | r = chase_symlinks(s->pid_file, NULL, CHASE_SAFE, NULL, &fd); |
935 | if (r == -ENOLINK) { | |
8ed6f81b YW |
936 | log_unit_debug_errno(UNIT(s), r, |
937 | "Potentially unsafe symlink chain, will now retry with relaxed checks: %s", s->pid_file); | |
73969ab6 LP |
938 | |
939 | questionable_pid_file = true; | |
940 | ||
a5648b80 | 941 | r = chase_symlinks(s->pid_file, NULL, 0, NULL, &fd); |
73969ab6 | 942 | } |
a5648b80 | 943 | if (r < 0) |
8ed6f81b YW |
944 | return log_unit_full_errno(UNIT(s), prio, fd, |
945 | "Can't open PID file %s (yet?) after %s: %m", s->pid_file, service_state_to_string(s->state)); | |
db256aab | 946 | |
a5648b80 ZJS |
947 | /* Let's read the PID file now that we chased it down. But we need to convert the O_PATH fd |
948 | * chase_symlinks() returned us into a proper fd first. */ | |
db256aab LP |
949 | xsprintf(procfs, "/proc/self/fd/%i", fd); |
950 | r = read_one_line_file(procfs, &k); | |
951 | if (r < 0) | |
a5648b80 ZJS |
952 | return log_unit_error_errno(UNIT(s), r, |
953 | "Can't convert PID files %s O_PATH file descriptor to proper file descriptor: %m", | |
954 | s->pid_file); | |
034c6ed7 | 955 | |
5925dd3c | 956 | r = parse_pid(k, &pid); |
db256aab | 957 | if (r < 0) |
8ed6f81b | 958 | return log_unit_full_errno(UNIT(s), prio, r, "Failed to parse PID from file %s: %m", s->pid_file); |
db256aab LP |
959 | |
960 | if (s->main_pid_known && pid == s->main_pid) | |
961 | return 0; | |
962 | ||
963 | r = service_is_suitable_main_pid(s, pid, prio); | |
964 | if (r < 0) | |
5925dd3c | 965 | return r; |
db256aab LP |
966 | if (r == 0) { |
967 | struct stat st; | |
406eaf93 | 968 | |
d85ff944 YW |
969 | if (questionable_pid_file) |
970 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(EPERM), | |
971 | "Refusing to accept PID outside of service control group, acquired through unsafe symlink chain: %s", s->pid_file); | |
73969ab6 | 972 | |
db256aab LP |
973 | /* Hmm, it's not clear if the new main PID is safe. Let's allow this if the PID file is owned by root */ |
974 | ||
975 | if (fstat(fd, &st) < 0) | |
976 | return log_unit_error_errno(UNIT(s), errno, "Failed to fstat() PID file O_PATH fd: %m"); | |
977 | ||
d85ff944 YW |
978 | if (st.st_uid != 0) |
979 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(EPERM), | |
980 | "New main PID "PID_FMT" does not belong to service, and PID file is not owned by root. Refusing.", pid); | |
db256aab LP |
981 | |
982 | log_unit_debug(UNIT(s), "New main PID "PID_FMT" does not belong to service, but we'll accept it since PID file is owned by root.", pid); | |
e10c9985 YS |
983 | } |
984 | ||
db01f8b3 | 985 | if (s->main_pid_known) { |
f2341e0a | 986 | log_unit_debug(UNIT(s), "Main PID changing: "PID_FMT" -> "PID_FMT, s->main_pid, pid); |
8bb2d17d | 987 | |
db01f8b3 MS |
988 | service_unwatch_main_pid(s); |
989 | s->main_pid_known = false; | |
3a111838 | 990 | } else |
f2341e0a | 991 | log_unit_debug(UNIT(s), "Main PID loaded: "PID_FMT, pid); |
db01f8b3 | 992 | |
117dcc57 ZJS |
993 | r = service_set_main_pid(s, pid); |
994 | if (r < 0) | |
16f6025e LP |
995 | return r; |
996 | ||
f75f613d | 997 | r = unit_watch_pid(UNIT(s), pid, false); |
e8b509d3 LP |
998 | if (r < 0) /* FIXME: we need to do something here */ |
999 | return log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" for service: %m", pid); | |
034c6ed7 | 1000 | |
db256aab | 1001 | return 1; |
034c6ed7 LP |
1002 | } |
1003 | ||
783e05d6 | 1004 | static void service_search_main_pid(Service *s) { |
efdb0237 | 1005 | pid_t pid = 0; |
4fbf50b3 LP |
1006 | int r; |
1007 | ||
1008 | assert(s); | |
1009 | ||
2aed63f4 | 1010 | /* If we know it anyway, don't ever fall back to unreliable |
3185a36b | 1011 | * heuristics */ |
4fbf50b3 | 1012 | if (s->main_pid_known) |
783e05d6 | 1013 | return; |
4fbf50b3 | 1014 | |
3185a36b | 1015 | if (!s->guess_main_pid) |
783e05d6 | 1016 | return; |
3185a36b | 1017 | |
4fbf50b3 LP |
1018 | assert(s->main_pid <= 0); |
1019 | ||
783e05d6 ZJS |
1020 | if (unit_search_main_pid(UNIT(s), &pid) < 0) |
1021 | return; | |
4fbf50b3 | 1022 | |
f2341e0a | 1023 | log_unit_debug(UNIT(s), "Main PID guessed: "PID_FMT, pid); |
783e05d6 ZJS |
1024 | if (service_set_main_pid(s, pid) < 0) |
1025 | return; | |
4fbf50b3 | 1026 | |
f75f613d | 1027 | r = unit_watch_pid(UNIT(s), pid, false); |
783e05d6 | 1028 | if (r < 0) |
4fbf50b3 | 1029 | /* FIXME: we need to do something here */ |
f2341e0a | 1030 | log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" from: %m", pid); |
4fbf50b3 LP |
1031 | } |
1032 | ||
034c6ed7 LP |
1033 | static void service_set_state(Service *s, ServiceState state) { |
1034 | ServiceState old_state; | |
e056b01d | 1035 | const UnitActiveState *table; |
842129f5 | 1036 | |
5cb5a6ff LP |
1037 | assert(s); |
1038 | ||
6fcbec6f LP |
1039 | if (s->state != state) |
1040 | bus_unit_send_pending_change_signal(UNIT(s), false); | |
1041 | ||
e056b01d LP |
1042 | table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
1043 | ||
034c6ed7 | 1044 | old_state = s->state; |
5cb5a6ff | 1045 | s->state = state; |
034c6ed7 | 1046 | |
3a111838 MS |
1047 | service_unwatch_pid_file(s); |
1048 | ||
842129f5 | 1049 | if (!IN_SET(state, |
31cd5f63 | 1050 | SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, |
36c16a7c | 1051 | SERVICE_RUNNING, |
842129f5 | 1052 | SERVICE_RELOAD, |
c87700a1 | 1053 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 1054 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL, |
4c2f5842 LP |
1055 | SERVICE_AUTO_RESTART, |
1056 | SERVICE_CLEANING)) | |
718db961 | 1057 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
034c6ed7 | 1058 | |
842129f5 LP |
1059 | if (!IN_SET(state, |
1060 | SERVICE_START, SERVICE_START_POST, | |
1061 | SERVICE_RUNNING, SERVICE_RELOAD, | |
c87700a1 | 1062 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 1063 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
5e94833f | 1064 | service_unwatch_main_pid(s); |
867b3b7d LP |
1065 | s->main_command = NULL; |
1066 | } | |
034c6ed7 | 1067 | |
842129f5 | 1068 | if (!IN_SET(state, |
31cd5f63 | 1069 | SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, |
842129f5 | 1070 | SERVICE_RELOAD, |
c87700a1 | 1071 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 1072 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL, |
4c2f5842 | 1073 | SERVICE_CLEANING)) { |
5e94833f | 1074 | service_unwatch_control_pid(s); |
034c6ed7 | 1075 | s->control_command = NULL; |
a16e1123 | 1076 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; |
e537352b | 1077 | } |
034c6ed7 | 1078 | |
50be4f4a | 1079 | if (IN_SET(state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART)) { |
a911bb9a | 1080 | unit_unwatch_all_pids(UNIT(s)); |
50be4f4a LP |
1081 | unit_dequeue_rewatch_pids(UNIT(s)); |
1082 | } | |
a911bb9a | 1083 | |
842129f5 | 1084 | if (!IN_SET(state, |
31cd5f63 | 1085 | SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, |
842129f5 | 1086 | SERVICE_RUNNING, SERVICE_RELOAD, |
c87700a1 | 1087 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 1088 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL) && |
5cc3985e | 1089 | !(state == SERVICE_DEAD && UNIT(s)->job)) |
4f2d528d LP |
1090 | service_close_socket_fd(s); |
1091 | ||
5686391b LP |
1092 | if (state != SERVICE_START) |
1093 | s->exec_fd_event_source = sd_event_source_unref(s->exec_fd_event_source); | |
1094 | ||
7596e9e1 | 1095 | if (!IN_SET(state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
a6927d7f MO |
1096 | service_stop_watchdog(s); |
1097 | ||
f6023656 LP |
1098 | /* For the inactive states unit_notify() will trim the cgroup, |
1099 | * but for exit we have to do that ourselves... */ | |
2c289ea8 | 1100 | if (state == SERVICE_EXITED && !MANAGER_IS_RELOADING(UNIT(s)->manager)) |
efdb0237 | 1101 | unit_prune_cgroup(UNIT(s)); |
f6023656 | 1102 | |
e537352b | 1103 | if (old_state != state) |
f2341e0a | 1104 | log_unit_debug(UNIT(s), "Changed %s -> %s", service_state_to_string(old_state), service_state_to_string(state)); |
acbb0225 | 1105 | |
2ad2e41a LP |
1106 | unit_notify(UNIT(s), table[old_state], table[state], |
1107 | (s->reload_result == SERVICE_SUCCESS ? 0 : UNIT_NOTIFY_RELOAD_FAILURE) | | |
42e6f549 | 1108 | (s->will_auto_restart ? UNIT_NOTIFY_WILL_AUTO_RESTART : 0)); |
034c6ed7 LP |
1109 | } |
1110 | ||
36c16a7c LP |
1111 | static usec_t service_coldplug_timeout(Service *s) { |
1112 | assert(s); | |
1113 | ||
1114 | switch (s->deserialized_state) { | |
1115 | ||
31cd5f63 | 1116 | case SERVICE_CONDITION: |
36c16a7c LP |
1117 | case SERVICE_START_PRE: |
1118 | case SERVICE_START: | |
1119 | case SERVICE_START_POST: | |
1120 | case SERVICE_RELOAD: | |
1121 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->timeout_start_usec); | |
1122 | ||
1123 | case SERVICE_RUNNING: | |
1124 | return usec_add(UNIT(s)->active_enter_timestamp.monotonic, s->runtime_max_usec); | |
1125 | ||
1126 | case SERVICE_STOP: | |
36c16a7c LP |
1127 | case SERVICE_STOP_SIGTERM: |
1128 | case SERVICE_STOP_SIGKILL: | |
1129 | case SERVICE_STOP_POST: | |
1130 | case SERVICE_FINAL_SIGTERM: | |
1131 | case SERVICE_FINAL_SIGKILL: | |
1132 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->timeout_stop_usec); | |
1133 | ||
dc653bf4 | 1134 | case SERVICE_STOP_WATCHDOG: |
bf760801 | 1135 | case SERVICE_FINAL_WATCHDOG: |
dc653bf4 JK |
1136 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, service_timeout_abort_usec(s)); |
1137 | ||
36c16a7c LP |
1138 | case SERVICE_AUTO_RESTART: |
1139 | return usec_add(UNIT(s)->inactive_enter_timestamp.monotonic, s->restart_usec); | |
1140 | ||
4c2f5842 | 1141 | case SERVICE_CLEANING: |
12213aed | 1142 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->exec_context.timeout_clean_usec); |
4c2f5842 | 1143 | |
36c16a7c LP |
1144 | default: |
1145 | return USEC_INFINITY; | |
1146 | } | |
1147 | } | |
1148 | ||
be847e82 | 1149 | static int service_coldplug(Unit *u) { |
a16e1123 LP |
1150 | Service *s = SERVICE(u); |
1151 | int r; | |
1152 | ||
1153 | assert(s); | |
1154 | assert(s->state == SERVICE_DEAD); | |
1155 | ||
930d2838 LP |
1156 | if (s->deserialized_state == s->state) |
1157 | return 0; | |
6c12b52e | 1158 | |
36c16a7c LP |
1159 | r = service_arm_timer(s, service_coldplug_timeout(s)); |
1160 | if (r < 0) | |
1161 | return r; | |
a911bb9a | 1162 | |
930d2838 LP |
1163 | if (s->main_pid > 0 && |
1164 | pid_is_unwaited(s->main_pid) && | |
9acac212 | 1165 | (IN_SET(s->deserialized_state, |
930d2838 LP |
1166 | SERVICE_START, SERVICE_START_POST, |
1167 | SERVICE_RUNNING, SERVICE_RELOAD, | |
c87700a1 | 1168 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 1169 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL))) { |
f75f613d | 1170 | r = unit_watch_pid(UNIT(s), s->main_pid, false); |
930d2838 LP |
1171 | if (r < 0) |
1172 | return r; | |
1173 | } | |
bb242b7b | 1174 | |
930d2838 LP |
1175 | if (s->control_pid > 0 && |
1176 | pid_is_unwaited(s->control_pid) && | |
1177 | IN_SET(s->deserialized_state, | |
31cd5f63 | 1178 | SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, |
930d2838 | 1179 | SERVICE_RELOAD, |
c87700a1 | 1180 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 1181 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL, |
4c2f5842 | 1182 | SERVICE_CLEANING)) { |
f75f613d | 1183 | r = unit_watch_pid(UNIT(s), s->control_pid, false); |
930d2838 LP |
1184 | if (r < 0) |
1185 | return r; | |
a16e1123 | 1186 | } |
92c1622e | 1187 | |
4c2f5842 | 1188 | if (!IN_SET(s->deserialized_state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART, SERVICE_CLEANING)) { |
50be4f4a | 1189 | (void) unit_enqueue_rewatch_pids(u); |
29206d46 | 1190 | (void) unit_setup_dynamic_creds(u); |
e8a565cb YW |
1191 | (void) unit_setup_exec_runtime(u); |
1192 | } | |
29206d46 | 1193 | |
50be4f4a LP |
1194 | if (IN_SET(s->deserialized_state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
1195 | service_start_watchdog(s); | |
1196 | ||
3ebcd323 ZJS |
1197 | if (UNIT_ISSET(s->accept_socket)) { |
1198 | Socket* socket = SOCKET(UNIT_DEREF(s->accept_socket)); | |
1199 | ||
1200 | if (socket->max_connections_per_source > 0) { | |
1201 | SocketPeer *peer; | |
1202 | ||
1203 | /* Make a best-effort attempt at bumping the connection count */ | |
1204 | if (socket_acquire_peer(socket, s->socket_fd, &peer) > 0) { | |
1205 | socket_peer_unref(s->peer); | |
1206 | s->peer = peer; | |
1207 | } | |
1208 | } | |
1209 | } | |
1210 | ||
930d2838 | 1211 | service_set_state(s, s->deserialized_state); |
a16e1123 LP |
1212 | return 0; |
1213 | } | |
1214 | ||
25b583d7 LP |
1215 | static int service_collect_fds( |
1216 | Service *s, | |
1217 | int **fds, | |
1218 | char ***fd_names, | |
1219 | size_t *n_socket_fds, | |
1220 | size_t *n_storage_fds) { | |
4c47affc | 1221 | |
8dd4c05b | 1222 | _cleanup_strv_free_ char **rfd_names = NULL; |
a354329f | 1223 | _cleanup_free_ int *rfds = NULL; |
25b583d7 | 1224 | size_t rn_socket_fds = 0, rn_storage_fds = 0; |
4c47affc | 1225 | int r; |
44d8db9e LP |
1226 | |
1227 | assert(s); | |
1228 | assert(fds); | |
8dd4c05b | 1229 | assert(fd_names); |
9b141911 | 1230 | assert(n_socket_fds); |
25b583d7 | 1231 | assert(n_storage_fds); |
44d8db9e | 1232 | |
8dd4c05b | 1233 | if (s->socket_fd >= 0) { |
6cf6bbc2 | 1234 | |
8dd4c05b | 1235 | /* Pass the per-connection socket */ |
57020a3a | 1236 | |
8dd4c05b LP |
1237 | rfds = new(int, 1); |
1238 | if (!rfds) | |
1239 | return -ENOMEM; | |
1240 | rfds[0] = s->socket_fd; | |
57020a3a | 1241 | |
bea1a013 | 1242 | rfd_names = strv_new("connection"); |
8dd4c05b LP |
1243 | if (!rfd_names) |
1244 | return -ENOMEM; | |
44d8db9e | 1245 | |
4c47affc | 1246 | rn_socket_fds = 1; |
8dd4c05b | 1247 | } else { |
eef85c4a | 1248 | void *v; |
8dd4c05b | 1249 | Unit *u; |
44d8db9e | 1250 | |
8dd4c05b | 1251 | /* Pass all our configured sockets for singleton services */ |
44d8db9e | 1252 | |
90e74a66 | 1253 | HASHMAP_FOREACH_KEY(v, u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY]) { |
8dd4c05b LP |
1254 | _cleanup_free_ int *cfds = NULL; |
1255 | Socket *sock; | |
1256 | int cn_fds; | |
44d8db9e | 1257 | |
8dd4c05b LP |
1258 | if (u->type != UNIT_SOCKET) |
1259 | continue; | |
44d8db9e | 1260 | |
8dd4c05b | 1261 | sock = SOCKET(u); |
a354329f | 1262 | |
8dd4c05b LP |
1263 | cn_fds = socket_collect_fds(sock, &cfds); |
1264 | if (cn_fds < 0) | |
1265 | return cn_fds; | |
44d8db9e | 1266 | |
8dd4c05b LP |
1267 | if (cn_fds <= 0) |
1268 | continue; | |
79c7626d | 1269 | |
8dd4c05b | 1270 | if (!rfds) { |
1cc6c93a | 1271 | rfds = TAKE_PTR(cfds); |
4c47affc | 1272 | rn_socket_fds = cn_fds; |
8dd4c05b LP |
1273 | } else { |
1274 | int *t; | |
1275 | ||
62d74c78 | 1276 | t = reallocarray(rfds, rn_socket_fds + cn_fds, sizeof(int)); |
8dd4c05b LP |
1277 | if (!t) |
1278 | return -ENOMEM; | |
1279 | ||
4c47affc | 1280 | memcpy(t + rn_socket_fds, cfds, cn_fds * sizeof(int)); |
8dd4c05b LP |
1281 | |
1282 | rfds = t; | |
4c47affc | 1283 | rn_socket_fds += cn_fds; |
8dd4c05b LP |
1284 | } |
1285 | ||
1286 | r = strv_extend_n(&rfd_names, socket_fdname(sock), cn_fds); | |
1287 | if (r < 0) | |
1288 | return r; | |
44d8db9e LP |
1289 | } |
1290 | } | |
1291 | ||
a354329f LP |
1292 | if (s->n_fd_store > 0) { |
1293 | ServiceFDStore *fs; | |
25b583d7 | 1294 | size_t n_fds; |
8dd4c05b | 1295 | char **nl; |
a354329f LP |
1296 | int *t; |
1297 | ||
62d74c78 | 1298 | t = reallocarray(rfds, rn_socket_fds + s->n_fd_store, sizeof(int)); |
a354329f LP |
1299 | if (!t) |
1300 | return -ENOMEM; | |
1301 | ||
1302 | rfds = t; | |
8dd4c05b | 1303 | |
62d74c78 | 1304 | nl = reallocarray(rfd_names, rn_socket_fds + s->n_fd_store + 1, sizeof(char *)); |
8dd4c05b LP |
1305 | if (!nl) |
1306 | return -ENOMEM; | |
1307 | ||
1308 | rfd_names = nl; | |
4c47affc | 1309 | n_fds = rn_socket_fds; |
8dd4c05b LP |
1310 | |
1311 | LIST_FOREACH(fd_store, fs, s->fd_store) { | |
4c47affc FB |
1312 | rfds[n_fds] = fs->fd; |
1313 | rfd_names[n_fds] = strdup(strempty(fs->fdname)); | |
1314 | if (!rfd_names[n_fds]) | |
8dd4c05b LP |
1315 | return -ENOMEM; |
1316 | ||
4c47affc FB |
1317 | rn_storage_fds++; |
1318 | n_fds++; | |
8dd4c05b LP |
1319 | } |
1320 | ||
4c47affc | 1321 | rfd_names[n_fds] = NULL; |
a354329f LP |
1322 | } |
1323 | ||
1cc6c93a YW |
1324 | *fds = TAKE_PTR(rfds); |
1325 | *fd_names = TAKE_PTR(rfd_names); | |
9b141911 | 1326 | *n_socket_fds = rn_socket_fds; |
4c47affc | 1327 | *n_storage_fds = rn_storage_fds; |
3e33402a | 1328 | |
4c47affc | 1329 | return 0; |
44d8db9e LP |
1330 | } |
1331 | ||
5686391b LP |
1332 | static int service_allocate_exec_fd_event_source( |
1333 | Service *s, | |
1334 | int fd, | |
1335 | sd_event_source **ret_event_source) { | |
1336 | ||
1337 | _cleanup_(sd_event_source_unrefp) sd_event_source *source = NULL; | |
1338 | int r; | |
1339 | ||
1340 | assert(s); | |
1341 | assert(fd >= 0); | |
1342 | assert(ret_event_source); | |
1343 | ||
1344 | r = sd_event_add_io(UNIT(s)->manager->event, &source, fd, 0, service_dispatch_exec_io, s); | |
1345 | if (r < 0) | |
1346 | return log_unit_error_errno(UNIT(s), r, "Failed to allocate exec_fd event source: %m"); | |
1347 | ||
1348 | /* This is a bit lower priority than SIGCHLD, as that carries a lot more interesting failure information */ | |
1349 | ||
1350 | r = sd_event_source_set_priority(source, SD_EVENT_PRIORITY_NORMAL-3); | |
1351 | if (r < 0) | |
1352 | return log_unit_error_errno(UNIT(s), r, "Failed to adjust priority of exec_fd event source: %m"); | |
1353 | ||
1354 | (void) sd_event_source_set_description(source, "service event_fd"); | |
1355 | ||
1356 | r = sd_event_source_set_io_fd_own(source, true); | |
1357 | if (r < 0) | |
1358 | return log_unit_error_errno(UNIT(s), r, "Failed to pass ownership of fd to event source: %m"); | |
1359 | ||
1360 | *ret_event_source = TAKE_PTR(source); | |
1361 | return 0; | |
1362 | } | |
1363 | ||
1364 | static int service_allocate_exec_fd( | |
1365 | Service *s, | |
1366 | sd_event_source **ret_event_source, | |
1367 | int* ret_exec_fd) { | |
1368 | ||
1369 | _cleanup_close_pair_ int p[2] = { -1, -1 }; | |
1370 | int r; | |
1371 | ||
1372 | assert(s); | |
1373 | assert(ret_event_source); | |
1374 | assert(ret_exec_fd); | |
1375 | ||
1376 | if (pipe2(p, O_CLOEXEC|O_NONBLOCK) < 0) | |
1377 | return log_unit_error_errno(UNIT(s), errno, "Failed to allocate exec_fd pipe: %m"); | |
1378 | ||
1379 | r = service_allocate_exec_fd_event_source(s, p[0], ret_event_source); | |
1380 | if (r < 0) | |
1381 | return r; | |
1382 | ||
1383 | p[0] = -1; | |
1384 | *ret_exec_fd = TAKE_FD(p[1]); | |
1385 | ||
1386 | return 0; | |
1387 | } | |
1388 | ||
6375bd20 JW |
1389 | static bool service_exec_needs_notify_socket(Service *s, ExecFlags flags) { |
1390 | assert(s); | |
1391 | ||
1392 | /* Notifications are accepted depending on the process and | |
1393 | * the access setting of the service: | |
1394 | * process: \ access: NONE MAIN EXEC ALL | |
1395 | * main no yes yes yes | |
1396 | * control no no yes yes | |
1397 | * other (forked) no no no yes */ | |
1398 | ||
1399 | if (flags & EXEC_IS_CONTROL) | |
1400 | /* A control process */ | |
1401 | return IN_SET(s->notify_access, NOTIFY_EXEC, NOTIFY_ALL); | |
1402 | ||
1403 | /* We only spawn main processes and control processes, so any | |
1404 | * process that is not a control process is a main process */ | |
1405 | return s->notify_access != NOTIFY_NONE; | |
1406 | } | |
1407 | ||
81a2b7ce LP |
1408 | static int service_spawn( |
1409 | Service *s, | |
1410 | ExecCommand *c, | |
21b2ce39 | 1411 | usec_t timeout, |
c39f1ce2 | 1412 | ExecFlags flags, |
81a2b7ce LP |
1413 | pid_t *_pid) { |
1414 | ||
b9c04eaf | 1415 | _cleanup_(exec_params_clear) ExecParameters exec_params = { |
c3f8a065 LP |
1416 | .flags = flags, |
1417 | .stdin_fd = -1, | |
1418 | .stdout_fd = -1, | |
1419 | .stderr_fd = -1, | |
1420 | .exec_fd = -1, | |
9fa95f85 | 1421 | }; |
5686391b | 1422 | _cleanup_(sd_event_source_unrefp) sd_event_source *exec_fd_source = NULL; |
c3f8a065 LP |
1423 | _cleanup_strv_free_ char **final_env = NULL, **our_env = NULL; |
1424 | size_t n_env = 0; | |
3c7416b6 | 1425 | pid_t pid; |
8dd4c05b LP |
1426 | int r; |
1427 | ||
034c6ed7 LP |
1428 | assert(s); |
1429 | assert(c); | |
1430 | assert(_pid); | |
1431 | ||
78f93209 | 1432 | r = unit_prepare_exec(UNIT(s)); /* This realizes the cgroup, among other things */ |
3c7416b6 LP |
1433 | if (r < 0) |
1434 | return r; | |
1435 | ||
9c1a61ad LP |
1436 | if (flags & EXEC_IS_CONTROL) { |
1437 | /* If this is a control process, mask the permissions/chroot application if this is requested. */ | |
1438 | if (s->permissions_start_only) | |
1703fa41 | 1439 | exec_params.flags &= ~EXEC_APPLY_SANDBOXING; |
9c1a61ad LP |
1440 | if (s->root_directory_start_only) |
1441 | exec_params.flags &= ~EXEC_APPLY_CHROOT; | |
1442 | } | |
1443 | ||
c39f1ce2 | 1444 | if ((flags & EXEC_PASS_FDS) || |
6cf6bbc2 LP |
1445 | s->exec_context.std_input == EXEC_INPUT_SOCKET || |
1446 | s->exec_context.std_output == EXEC_OUTPUT_SOCKET || | |
1447 | s->exec_context.std_error == EXEC_OUTPUT_SOCKET) { | |
1448 | ||
c3f8a065 LP |
1449 | r = service_collect_fds(s, |
1450 | &exec_params.fds, | |
1451 | &exec_params.fd_names, | |
1452 | &exec_params.n_socket_fds, | |
1453 | &exec_params.n_storage_fds); | |
8dd4c05b | 1454 | if (r < 0) |
36c16a7c | 1455 | return r; |
6cf6bbc2 | 1456 | |
c3f8a065 | 1457 | log_unit_debug(UNIT(s), "Passing %zu fds to service", exec_params.n_socket_fds + exec_params.n_storage_fds); |
4f2d528d | 1458 | } |
44d8db9e | 1459 | |
5686391b LP |
1460 | if (!FLAGS_SET(flags, EXEC_IS_CONTROL) && s->type == SERVICE_EXEC) { |
1461 | assert(!s->exec_fd_event_source); | |
1462 | ||
c3f8a065 | 1463 | r = service_allocate_exec_fd(s, &exec_fd_source, &exec_params.exec_fd); |
5686391b LP |
1464 | if (r < 0) |
1465 | return r; | |
1466 | } | |
1467 | ||
36c16a7c LP |
1468 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), timeout)); |
1469 | if (r < 0) | |
1470 | return r; | |
034c6ed7 | 1471 | |
dcf3c3c3 | 1472 | our_env = new0(char*, 10); |
36c16a7c LP |
1473 | if (!our_env) |
1474 | return -ENOMEM; | |
c952c6ec | 1475 | |
3bdc25a4 | 1476 | if (service_exec_needs_notify_socket(s, flags)) { |
36c16a7c LP |
1477 | if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) |
1478 | return -ENOMEM; | |
c952c6ec | 1479 | |
3bdc25a4 LP |
1480 | exec_params.notify_socket = UNIT(s)->manager->notify_socket; |
1481 | } | |
1482 | ||
2105e76a | 1483 | if (s->main_pid > 0) |
36c16a7c LP |
1484 | if (asprintf(our_env + n_env++, "MAINPID="PID_FMT, s->main_pid) < 0) |
1485 | return -ENOMEM; | |
2105e76a | 1486 | |
c39f1ce2 | 1487 | if (MANAGER_IS_USER(UNIT(s)->manager)) |
df0ff127 | 1488 | if (asprintf(our_env + n_env++, "MANAGERPID="PID_FMT, getpid_cached()) < 0) |
36c16a7c | 1489 | return -ENOMEM; |
97ae63e2 | 1490 | |
dcf3c3c3 LP |
1491 | if (s->pid_file) |
1492 | if (asprintf(our_env + n_env++, "PIDFILE=%s", s->pid_file) < 0) | |
1493 | return -ENOMEM; | |
1494 | ||
8dd4c05b | 1495 | if (s->socket_fd >= 0) { |
3b1c5241 SL |
1496 | union sockaddr_union sa; |
1497 | socklen_t salen = sizeof(sa); | |
1498 | ||
f56e7bfe LP |
1499 | /* If this is a per-connection service instance, let's set $REMOTE_ADDR and $REMOTE_PORT to something |
1500 | * useful. Note that we do this only when we are still connected at this point in time, which we might | |
1501 | * very well not be. Hence we ignore all errors when retrieving peer information (as that might result | |
1502 | * in ENOTCONN), and just use whate we can use. */ | |
f2dbd059 | 1503 | |
f56e7bfe LP |
1504 | if (getpeername(s->socket_fd, &sa.sa, &salen) >= 0 && |
1505 | IN_SET(sa.sa.sa_family, AF_INET, AF_INET6, AF_VSOCK)) { | |
3b1c5241 SL |
1506 | _cleanup_free_ char *addr = NULL; |
1507 | char *t; | |
882ac6e7 | 1508 | unsigned port; |
3b1c5241 SL |
1509 | |
1510 | r = sockaddr_pretty(&sa.sa, salen, true, false, &addr); | |
1511 | if (r < 0) | |
36c16a7c | 1512 | return r; |
3b1c5241 | 1513 | |
b910cc72 | 1514 | t = strjoin("REMOTE_ADDR=", addr); |
36c16a7c LP |
1515 | if (!t) |
1516 | return -ENOMEM; | |
3b1c5241 SL |
1517 | our_env[n_env++] = t; |
1518 | ||
882ac6e7 SH |
1519 | r = sockaddr_port(&sa.sa, &port); |
1520 | if (r < 0) | |
1521 | return r; | |
3b1c5241 | 1522 | |
36c16a7c LP |
1523 | if (asprintf(&t, "REMOTE_PORT=%u", port) < 0) |
1524 | return -ENOMEM; | |
3b1c5241 SL |
1525 | our_env[n_env++] = t; |
1526 | } | |
1527 | } | |
1528 | ||
136dc4c4 LP |
1529 | if (flags & EXEC_SETENV_RESULT) { |
1530 | if (asprintf(our_env + n_env++, "SERVICE_RESULT=%s", service_result_to_string(s->result)) < 0) | |
1531 | return -ENOMEM; | |
1532 | ||
1533 | if (s->main_exec_status.pid > 0 && | |
1534 | dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) { | |
1535 | if (asprintf(our_env + n_env++, "EXIT_CODE=%s", sigchld_code_to_string(s->main_exec_status.code)) < 0) | |
1536 | return -ENOMEM; | |
1537 | ||
1538 | if (s->main_exec_status.code == CLD_EXITED) | |
1539 | r = asprintf(our_env + n_env++, "EXIT_STATUS=%i", s->main_exec_status.status); | |
1540 | else | |
1541 | r = asprintf(our_env + n_env++, "EXIT_STATUS=%s", signal_to_string(s->main_exec_status.status)); | |
1542 | if (r < 0) | |
1543 | return -ENOMEM; | |
1544 | } | |
1545 | } | |
1546 | ||
1ad6e8b3 LP |
1547 | r = unit_set_exec_params(UNIT(s), &exec_params); |
1548 | if (r < 0) | |
1549 | return r; | |
3536f49e YW |
1550 | |
1551 | final_env = strv_env_merge(2, exec_params.environment, our_env, NULL); | |
36c16a7c LP |
1552 | if (!final_env) |
1553 | return -ENOMEM; | |
c952c6ec | 1554 | |
ac647978 LP |
1555 | /* System D-Bus needs nss-systemd disabled, so that we don't deadlock */ |
1556 | SET_FLAG(exec_params.flags, EXEC_NSS_BYPASS_BUS, | |
1557 | MANAGER_IS_SYSTEM(UNIT(s)->manager) && unit_has_name(UNIT(s), SPECIAL_DBUS_SERVICE)); | |
4ad49000 | 1558 | |
b9c04eaf | 1559 | strv_free_and_replace(exec_params.environment, final_env); |
34b3f625 | 1560 | exec_params.watchdog_usec = service_get_watchdog_usec(s); |
a34ceba6 | 1561 | exec_params.selinux_context_net = s->socket_fd_selinux_context_net; |
9fa95f85 DM |
1562 | if (s->type == SERVICE_IDLE) |
1563 | exec_params.idle_pipe = UNIT(s)->manager->idle_pipe; | |
a34ceba6 LP |
1564 | exec_params.stdin_fd = s->stdin_fd; |
1565 | exec_params.stdout_fd = s->stdout_fd; | |
1566 | exec_params.stderr_fd = s->stderr_fd; | |
9fa95f85 | 1567 | |
f2341e0a LP |
1568 | r = exec_spawn(UNIT(s), |
1569 | c, | |
9e2f7c11 | 1570 | &s->exec_context, |
9fa95f85 | 1571 | &exec_params, |
613b411c | 1572 | s->exec_runtime, |
29206d46 | 1573 | &s->dynamic_creds, |
9e2f7c11 | 1574 | &pid); |
9e2f7c11 | 1575 | if (r < 0) |
36c16a7c | 1576 | return r; |
034c6ed7 | 1577 | |
5686391b LP |
1578 | s->exec_fd_event_source = TAKE_PTR(exec_fd_source); |
1579 | s->exec_fd_hot = false; | |
1580 | ||
f75f613d FB |
1581 | r = unit_watch_pid(UNIT(s), pid, true); |
1582 | if (r < 0) | |
36c16a7c | 1583 | return r; |
034c6ed7 LP |
1584 | |
1585 | *_pid = pid; | |
1586 | ||
5cb5a6ff | 1587 | return 0; |
034c6ed7 LP |
1588 | } |
1589 | ||
80876c20 LP |
1590 | static int main_pid_good(Service *s) { |
1591 | assert(s); | |
1592 | ||
51894d70 | 1593 | /* Returns 0 if the pid is dead, > 0 if it is good, < 0 if we don't know */ |
80876c20 | 1594 | |
fc08079e | 1595 | /* If we know the pid file, then let's just check if it is |
80876c20 | 1596 | * still valid */ |
6dfa5494 LP |
1597 | if (s->main_pid_known) { |
1598 | ||
1599 | /* If it's an alien child let's check if it is still | |
1600 | * alive ... */ | |
62220cf7 | 1601 | if (s->main_pid_alien && s->main_pid > 0) |
9f5650ae | 1602 | return pid_is_alive(s->main_pid); |
6dfa5494 LP |
1603 | |
1604 | /* .. otherwise assume we'll get a SIGCHLD for it, | |
1605 | * which we really should wait for to collect exit | |
1606 | * status and code */ | |
80876c20 | 1607 | return s->main_pid > 0; |
6dfa5494 | 1608 | } |
80876c20 LP |
1609 | |
1610 | /* We don't know the pid */ | |
1611 | return -EAGAIN; | |
1612 | } | |
1613 | ||
019be286 | 1614 | static int control_pid_good(Service *s) { |
80876c20 LP |
1615 | assert(s); |
1616 | ||
07697d7e LP |
1617 | /* Returns 0 if the control PID is dead, > 0 if it is good. We never actually return < 0 here, but in order to |
1618 | * make this function as similar as possible to main_pid_good() and cgroup_good(), we pretend that < 0 also | |
1619 | * means: we can't figure it out. */ | |
1620 | ||
80876c20 LP |
1621 | return s->control_pid > 0; |
1622 | } | |
1623 | ||
cb0e818f | 1624 | static int cgroup_empty(Service *s) { |
80876c20 LP |
1625 | assert(s); |
1626 | ||
cb0e818f | 1627 | /* Returns 0 if there is no cgroup, > 0 if is empty or doesn't exist, < 0 if we can't figure it out */ |
07697d7e | 1628 | |
4ad49000 LP |
1629 | if (!UNIT(s)->cgroup_path) |
1630 | return 0; | |
1631 | ||
cb0e818f HC |
1632 | return cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, UNIT(s)->cgroup_path); |
1633 | } | |
1634 | ||
1635 | ||
1636 | static int cgroup_good(Service *s) { | |
1637 | int r; | |
1638 | ||
1639 | /* Returns 0 if the cgroup is empty or doesn't exist, > 0 if it is exists and is populated, < 0 if we can't | |
1640 | * figure it out */ | |
1641 | ||
1642 | r = cgroup_empty(s); | |
117dcc57 | 1643 | if (r < 0) |
80876c20 LP |
1644 | return r; |
1645 | ||
b13ddbbc | 1646 | return r == 0; |
80876c20 LP |
1647 | } |
1648 | ||
ebc57b89 | 1649 | static bool service_shall_restart(Service *s, const char **reason) { |
a509f0e6 LP |
1650 | assert(s); |
1651 | ||
1652 | /* Don't restart after manual stops */ | |
ebc57b89 ZJS |
1653 | if (s->forbid_restart) { |
1654 | *reason = "manual stop"; | |
a509f0e6 | 1655 | return false; |
ebc57b89 | 1656 | } |
a509f0e6 LP |
1657 | |
1658 | /* Never restart if this is configured as special exception */ | |
ebc57b89 ZJS |
1659 | if (exit_status_set_test(&s->restart_prevent_status, s->main_exec_status.code, s->main_exec_status.status)) { |
1660 | *reason = "prevented by exit status"; | |
a509f0e6 | 1661 | return false; |
ebc57b89 | 1662 | } |
a509f0e6 LP |
1663 | |
1664 | /* Restart if the exit code/status are configured as restart triggers */ | |
ebc57b89 ZJS |
1665 | if (exit_status_set_test(&s->restart_force_status, s->main_exec_status.code, s->main_exec_status.status)) { |
1666 | *reason = "forced by exit status"; | |
a509f0e6 | 1667 | return true; |
ebc57b89 | 1668 | } |
a509f0e6 | 1669 | |
ebc57b89 | 1670 | *reason = "restart setting"; |
a509f0e6 LP |
1671 | switch (s->restart) { |
1672 | ||
1673 | case SERVICE_RESTART_NO: | |
1674 | return false; | |
1675 | ||
1676 | case SERVICE_RESTART_ALWAYS: | |
1677 | return true; | |
1678 | ||
1679 | case SERVICE_RESTART_ON_SUCCESS: | |
1680 | return s->result == SERVICE_SUCCESS; | |
1681 | ||
1682 | case SERVICE_RESTART_ON_FAILURE: | |
bb924478 | 1683 | return !IN_SET(s->result, SERVICE_SUCCESS, SERVICE_SKIP_CONDITION); |
a509f0e6 LP |
1684 | |
1685 | case SERVICE_RESTART_ON_ABNORMAL: | |
bb924478 | 1686 | return !IN_SET(s->result, SERVICE_SUCCESS, SERVICE_FAILURE_EXIT_CODE, SERVICE_SKIP_CONDITION); |
a509f0e6 LP |
1687 | |
1688 | case SERVICE_RESTART_ON_WATCHDOG: | |
1689 | return s->result == SERVICE_FAILURE_WATCHDOG; | |
1690 | ||
1691 | case SERVICE_RESTART_ON_ABORT: | |
1692 | return IN_SET(s->result, SERVICE_FAILURE_SIGNAL, SERVICE_FAILURE_CORE_DUMP); | |
1693 | ||
1694 | default: | |
1695 | assert_not_reached("unknown restart setting"); | |
1696 | } | |
1697 | } | |
1698 | ||
deb4e708 MK |
1699 | static bool service_will_restart(Unit *u) { |
1700 | Service *s = SERVICE(u); | |
1701 | ||
53f47dfc YW |
1702 | assert(s); |
1703 | ||
deb4e708 MK |
1704 | if (s->will_auto_restart) |
1705 | return true; | |
53f47dfc YW |
1706 | if (s->state == SERVICE_AUTO_RESTART) |
1707 | return true; | |
2ad2e41a | 1708 | |
52a12341 | 1709 | return unit_will_restart_default(u); |
53f47dfc YW |
1710 | } |
1711 | ||
f42806df | 1712 | static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) { |
31cd5f63 | 1713 | ServiceState end_state; |
034c6ed7 | 1714 | int r; |
0f52f8e5 | 1715 | |
034c6ed7 LP |
1716 | assert(s); |
1717 | ||
0f52f8e5 LP |
1718 | /* If there's a stop job queued before we enter the DEAD state, we shouldn't act on Restart=, in order to not |
1719 | * undo what has already been enqueued. */ | |
1720 | if (unit_stop_pending(UNIT(s))) | |
1721 | allow_restart = false; | |
1722 | ||
a0fef983 | 1723 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1724 | s->result = f; |
034c6ed7 | 1725 | |
31cd5f63 AZ |
1726 | if (s->result == SERVICE_SUCCESS) { |
1727 | unit_log_success(UNIT(s)); | |
1728 | end_state = SERVICE_DEAD; | |
1729 | } else if (s->result == SERVICE_SKIP_CONDITION) { | |
1730 | unit_log_skip(UNIT(s), service_result_to_string(s->result)); | |
1731 | end_state = SERVICE_DEAD; | |
1732 | } else { | |
1733 | unit_log_failure(UNIT(s), service_result_to_string(s->result)); | |
1734 | end_state = SERVICE_FAILED; | |
1735 | } | |
4c425434 | 1736 | unit_warn_leftover_processes(UNIT(s), unit_log_leftover_process_stop); |
ed77d407 | 1737 | |
ebc57b89 ZJS |
1738 | if (!allow_restart) |
1739 | log_unit_debug(UNIT(s), "Service restart not allowed."); | |
1740 | else { | |
1741 | const char *reason; | |
1742 | bool shall_restart; | |
1743 | ||
1744 | shall_restart = service_shall_restart(s, &reason); | |
1745 | log_unit_debug(UNIT(s), "Service will %srestart (%s)", | |
1746 | shall_restart ? "" : "not ", | |
1747 | reason); | |
1748 | if (shall_restart) | |
1749 | s->will_auto_restart = true; | |
1750 | } | |
deb4e708 | 1751 | |
7eb2a8a1 LP |
1752 | /* Make sure service_release_resources() doesn't destroy our FD store, while we are changing through |
1753 | * SERVICE_FAILED/SERVICE_DEAD before entering into SERVICE_AUTO_RESTART. */ | |
1754 | s->n_keep_fd_store ++; | |
1755 | ||
31cd5f63 | 1756 | service_set_state(s, end_state); |
0c7f15b3 | 1757 | |
deb4e708 MK |
1758 | if (s->will_auto_restart) { |
1759 | s->will_auto_restart = false; | |
034c6ed7 | 1760 | |
36c16a7c | 1761 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->restart_usec)); |
7eb2a8a1 LP |
1762 | if (r < 0) { |
1763 | s->n_keep_fd_store--; | |
034c6ed7 | 1764 | goto fail; |
7eb2a8a1 | 1765 | } |
034c6ed7 LP |
1766 | |
1767 | service_set_state(s, SERVICE_AUTO_RESTART); | |
7a0019d3 LP |
1768 | } else |
1769 | /* If we shan't restart, then flush out the restart counter. But don't do that immediately, so that the | |
1770 | * user can still introspect the counter. Do so on the next start. */ | |
1771 | s->flush_n_restarts = true; | |
034c6ed7 | 1772 | |
5238e957 | 1773 | /* 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 |
1774 | * queue, so that the fd store is possibly gc'ed again */ |
1775 | s->n_keep_fd_store--; | |
1776 | unit_add_to_gc_queue(UNIT(s)); | |
1777 | ||
f2341e0a | 1778 | /* The next restart might not be a manual stop, hence reset the flag indicating manual stops */ |
47342320 LP |
1779 | s->forbid_restart = false; |
1780 | ||
e66cf1a3 | 1781 | /* We want fresh tmpdirs in case service is started again immediately */ |
e8a565cb | 1782 | s->exec_runtime = exec_runtime_unref(s->exec_runtime, true); |
c17ec25e | 1783 | |
95939aed | 1784 | /* Also, remove the runtime directory */ |
bb0c0d6f | 1785 | unit_destroy_runtime_data(UNIT(s), &s->exec_context); |
e66cf1a3 | 1786 | |
00d9ef85 LP |
1787 | /* Get rid of the IPC bits of the user */ |
1788 | unit_unref_uid_gid(UNIT(s), true); | |
1789 | ||
29206d46 LP |
1790 | /* Release the user, and destroy it if we are the only remaining owner */ |
1791 | dynamic_creds_destroy(&s->dynamic_creds); | |
1792 | ||
9285c9ff LN |
1793 | /* Try to delete the pid file. At this point it will be |
1794 | * out-of-date, and some software might be confused by it, so | |
1795 | * let's remove it. */ | |
1796 | if (s->pid_file) | |
fabab190 | 1797 | (void) unlink(s->pid_file); |
9285c9ff | 1798 | |
6f765baf LP |
1799 | /* Reset TTY ownership if necessary */ |
1800 | exec_context_revert_tty(&s->exec_context); | |
1801 | ||
034c6ed7 LP |
1802 | return; |
1803 | ||
1804 | fail: | |
f2341e0a | 1805 | log_unit_warning_errno(UNIT(s), r, "Failed to run install restart timer: %m"); |
f42806df | 1806 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); |
034c6ed7 LP |
1807 | } |
1808 | ||
f42806df | 1809 | static void service_enter_stop_post(Service *s, ServiceResult f) { |
034c6ed7 LP |
1810 | int r; |
1811 | assert(s); | |
1812 | ||
a0fef983 | 1813 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1814 | s->result = f; |
034c6ed7 | 1815 | |
5e94833f | 1816 | service_unwatch_control_pid(s); |
50be4f4a | 1817 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
5e94833f | 1818 | |
117dcc57 ZJS |
1819 | s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST]; |
1820 | if (s->control_command) { | |
867b3b7d LP |
1821 | s->control_command_id = SERVICE_EXEC_STOP_POST; |
1822 | ||
ecedd90f LP |
1823 | r = service_spawn(s, |
1824 | s->control_command, | |
21b2ce39 | 1825 | s->timeout_stop_usec, |
78f93209 | 1826 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_IS_CONTROL|EXEC_SETENV_RESULT|EXEC_CONTROL_CGROUP, |
ecedd90f LP |
1827 | &s->control_pid); |
1828 | if (r < 0) | |
034c6ed7 LP |
1829 | goto fail; |
1830 | ||
80876c20 LP |
1831 | service_set_state(s, SERVICE_STOP_POST); |
1832 | } else | |
ac84d1fb | 1833 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
1834 | |
1835 | return; | |
1836 | ||
1837 | fail: | |
f2341e0a | 1838 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop-post' task: %m"); |
f42806df | 1839 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1840 | } |
1841 | ||
a232ebcc | 1842 | static int state_to_kill_operation(Service *s, ServiceState state) { |
4940c0b0 LP |
1843 | switch (state) { |
1844 | ||
c87700a1 | 1845 | case SERVICE_STOP_WATCHDOG: |
bf760801 | 1846 | case SERVICE_FINAL_WATCHDOG: |
c87700a1 | 1847 | return KILL_WATCHDOG; |
4940c0b0 LP |
1848 | |
1849 | case SERVICE_STOP_SIGTERM: | |
a232ebcc ZJS |
1850 | if (unit_has_job_type(UNIT(s), JOB_RESTART)) |
1851 | return KILL_RESTART; | |
1852 | _fallthrough_; | |
1853 | ||
4940c0b0 LP |
1854 | case SERVICE_FINAL_SIGTERM: |
1855 | return KILL_TERMINATE; | |
1856 | ||
1857 | case SERVICE_STOP_SIGKILL: | |
1858 | case SERVICE_FINAL_SIGKILL: | |
1859 | return KILL_KILL; | |
1860 | ||
1861 | default: | |
1862 | return _KILL_OPERATION_INVALID; | |
1863 | } | |
1864 | } | |
1865 | ||
f42806df | 1866 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) { |
bf760801 | 1867 | int kill_operation, r; |
034c6ed7 LP |
1868 | |
1869 | assert(s); | |
1870 | ||
a0fef983 | 1871 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1872 | s->result = f; |
034c6ed7 | 1873 | |
50be4f4a LP |
1874 | /* Before sending any signal, make sure we track all members of this cgroup */ |
1875 | (void) unit_watch_all_pids(UNIT(s)); | |
1876 | ||
1877 | /* Also, enqueue a job that we recheck all our PIDs a bit later, given that it's likely some processes have | |
1878 | * died now */ | |
1879 | (void) unit_enqueue_rewatch_pids(UNIT(s)); | |
a911bb9a | 1880 | |
bf760801 | 1881 | kill_operation = state_to_kill_operation(s, state); |
cd2086fe LP |
1882 | r = unit_kill_context( |
1883 | UNIT(s), | |
1884 | &s->kill_context, | |
bf760801 | 1885 | kill_operation, |
cd2086fe LP |
1886 | s->main_pid, |
1887 | s->control_pid, | |
1888 | s->main_pid_alien); | |
1889 | if (r < 0) | |
1890 | goto fail; | |
034c6ed7 | 1891 | |
cd2086fe | 1892 | if (r > 0) { |
dc653bf4 | 1893 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), |
bf760801 | 1894 | kill_operation == KILL_WATCHDOG ? service_timeout_abort_usec(s) : s->timeout_stop_usec)); |
36c16a7c LP |
1895 | if (r < 0) |
1896 | goto fail; | |
d6ea93e3 | 1897 | |
80876c20 | 1898 | service_set_state(s, state); |
c87700a1 | 1899 | } else if (IN_SET(state, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM) && s->kill_context.send_sigkill) |
ac84d1fb | 1900 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_SUCCESS); |
c87700a1 | 1901 | else if (IN_SET(state, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 1902 | service_enter_stop_post(s, SERVICE_SUCCESS); |
bf760801 | 1903 | else if (IN_SET(state, SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM) && s->kill_context.send_sigkill) |
ac84d1fb | 1904 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_SUCCESS); |
80876c20 | 1905 | else |
f42806df | 1906 | service_enter_dead(s, SERVICE_SUCCESS, true); |
034c6ed7 LP |
1907 | |
1908 | return; | |
1909 | ||
1910 | fail: | |
f2341e0a | 1911 | log_unit_warning_errno(UNIT(s), r, "Failed to kill processes: %m"); |
034c6ed7 | 1912 | |
c87700a1 | 1913 | if (IN_SET(state, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 1914 | service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES); |
034c6ed7 | 1915 | else |
f42806df | 1916 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
034c6ed7 LP |
1917 | } |
1918 | ||
308d72dc LP |
1919 | static void service_enter_stop_by_notify(Service *s) { |
1920 | assert(s); | |
1921 | ||
50be4f4a | 1922 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
308d72dc | 1923 | |
36c16a7c | 1924 | service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_stop_usec)); |
308d72dc | 1925 | |
6041a7ee MS |
1926 | /* The service told us it's stopping, so it's as if we SIGTERM'd it. */ |
1927 | service_set_state(s, SERVICE_STOP_SIGTERM); | |
308d72dc LP |
1928 | } |
1929 | ||
f42806df | 1930 | static void service_enter_stop(Service *s, ServiceResult f) { |
034c6ed7 | 1931 | int r; |
5925dd3c | 1932 | |
034c6ed7 LP |
1933 | assert(s); |
1934 | ||
a0fef983 | 1935 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1936 | s->result = f; |
034c6ed7 | 1937 | |
5e94833f | 1938 | service_unwatch_control_pid(s); |
50be4f4a | 1939 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
5e94833f | 1940 | |
117dcc57 ZJS |
1941 | s->control_command = s->exec_command[SERVICE_EXEC_STOP]; |
1942 | if (s->control_command) { | |
867b3b7d LP |
1943 | s->control_command_id = SERVICE_EXEC_STOP; |
1944 | ||
ecedd90f LP |
1945 | r = service_spawn(s, |
1946 | s->control_command, | |
21b2ce39 | 1947 | s->timeout_stop_usec, |
78f93209 | 1948 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_SETENV_RESULT|EXEC_CONTROL_CGROUP, |
ecedd90f LP |
1949 | &s->control_pid); |
1950 | if (r < 0) | |
034c6ed7 LP |
1951 | goto fail; |
1952 | ||
80876c20 LP |
1953 | service_set_state(s, SERVICE_STOP); |
1954 | } else | |
f42806df | 1955 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
1956 | |
1957 | return; | |
1958 | ||
1959 | fail: | |
f2341e0a | 1960 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop' task: %m"); |
f42806df | 1961 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1962 | } |
1963 | ||
957c3cf9 LP |
1964 | static bool service_good(Service *s) { |
1965 | int main_pid_ok; | |
1966 | assert(s); | |
1967 | ||
1968 | if (s->type == SERVICE_DBUS && !s->bus_name_good) | |
1969 | return false; | |
1970 | ||
1971 | main_pid_ok = main_pid_good(s); | |
1972 | if (main_pid_ok > 0) /* It's alive */ | |
1973 | return true; | |
1974 | if (main_pid_ok == 0) /* It's dead */ | |
1975 | return false; | |
1976 | ||
1977 | /* OK, we don't know anything about the main PID, maybe | |
1978 | * because there is none. Let's check the control group | |
1979 | * instead. */ | |
1980 | ||
1981 | return cgroup_good(s) != 0; | |
1982 | } | |
1983 | ||
f42806df | 1984 | static void service_enter_running(Service *s, ServiceResult f) { |
80876c20 LP |
1985 | assert(s); |
1986 | ||
a0fef983 | 1987 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1988 | s->result = f; |
80876c20 | 1989 | |
089b64d5 LP |
1990 | service_unwatch_control_pid(s); |
1991 | ||
ec5b1452 LP |
1992 | if (s->result != SERVICE_SUCCESS) |
1993 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); | |
1994 | else if (service_good(s)) { | |
308d72dc | 1995 | |
ec5b1452 | 1996 | /* If there are any queued up sd_notify() notifications, process them now */ |
308d72dc LP |
1997 | if (s->notify_state == NOTIFY_RELOADING) |
1998 | service_enter_reload_by_notify(s); | |
1999 | else if (s->notify_state == NOTIFY_STOPPING) | |
2000 | service_enter_stop_by_notify(s); | |
36c16a7c | 2001 | else { |
308d72dc | 2002 | service_set_state(s, SERVICE_RUNNING); |
36c16a7c LP |
2003 | service_arm_timer(s, usec_add(UNIT(s)->active_enter_timestamp.monotonic, s->runtime_max_usec)); |
2004 | } | |
308d72dc | 2005 | |
ec5b1452 | 2006 | } else if (s->remain_after_exit) |
80876c20 LP |
2007 | service_set_state(s, SERVICE_EXITED); |
2008 | else | |
f42806df | 2009 | service_enter_stop(s, SERVICE_SUCCESS); |
80876c20 LP |
2010 | } |
2011 | ||
034c6ed7 LP |
2012 | static void service_enter_start_post(Service *s) { |
2013 | int r; | |
2014 | assert(s); | |
2015 | ||
5e94833f | 2016 | service_unwatch_control_pid(s); |
842129f5 | 2017 | service_reset_watchdog(s); |
bb242b7b | 2018 | |
117dcc57 ZJS |
2019 | s->control_command = s->exec_command[SERVICE_EXEC_START_POST]; |
2020 | if (s->control_command) { | |
867b3b7d LP |
2021 | s->control_command_id = SERVICE_EXEC_START_POST; |
2022 | ||
ecedd90f LP |
2023 | r = service_spawn(s, |
2024 | s->control_command, | |
21b2ce39 | 2025 | s->timeout_start_usec, |
78f93209 | 2026 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_CONTROL_CGROUP, |
ecedd90f LP |
2027 | &s->control_pid); |
2028 | if (r < 0) | |
034c6ed7 LP |
2029 | goto fail; |
2030 | ||
80876c20 LP |
2031 | service_set_state(s, SERVICE_START_POST); |
2032 | } else | |
f42806df | 2033 | service_enter_running(s, SERVICE_SUCCESS); |
034c6ed7 LP |
2034 | |
2035 | return; | |
2036 | ||
2037 | fail: | |
f2341e0a | 2038 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-post' task: %m"); |
f42806df | 2039 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
2040 | } |
2041 | ||
e9a4f676 | 2042 | static void service_kill_control_process(Service *s) { |
a6951a50 | 2043 | int r; |
4ad49000 | 2044 | |
a6951a50 LP |
2045 | assert(s); |
2046 | ||
e9a4f676 LP |
2047 | if (s->control_pid <= 0) |
2048 | return; | |
4ad49000 | 2049 | |
e9a4f676 LP |
2050 | r = kill_and_sigcont(s->control_pid, SIGKILL); |
2051 | if (r < 0) { | |
2052 | _cleanup_free_ char *comm = NULL; | |
a6951a50 | 2053 | |
e9a4f676 | 2054 | (void) get_process_comm(s->control_pid, &comm); |
a6951a50 | 2055 | |
e9a4f676 LP |
2056 | log_unit_debug_errno(UNIT(s), r, "Failed to kill control process " PID_FMT " (%s), ignoring: %m", |
2057 | s->control_pid, strna(comm)); | |
a6951a50 | 2058 | } |
4ad49000 LP |
2059 | } |
2060 | ||
c53d2d54 DB |
2061 | static int service_adverse_to_leftover_processes(Service *s) { |
2062 | assert(s); | |
2063 | ||
2064 | /* KillMode=mixed and control group are used to indicate that all process should be killed off. | |
4c425434 LP |
2065 | * SendSIGKILL= is used for services that require a clean shutdown. These are typically database |
2066 | * service where a SigKilled process would result in a lengthy recovery and who's shutdown or startup | |
2067 | * time is quite variable (so Timeout settings aren't of use). | |
c53d2d54 DB |
2068 | * |
2069 | * Here we take these two factors and refuse to start a service if there are existing processes | |
2070 | * within a control group. Databases, while generally having some protection against multiple | |
4c425434 | 2071 | * instances running, lets not stress the rigor of these. Also ExecStartPre= parts of the service |
c53d2d54 | 2072 | * aren't as rigoriously written to protect aganst against multiple use. */ |
4c425434 LP |
2073 | |
2074 | if (unit_warn_leftover_processes(UNIT(s), unit_log_leftover_process_start) > 0 && | |
c53d2d54 | 2075 | IN_SET(s->kill_context.kill_mode, KILL_MIXED, KILL_CONTROL_GROUP) && |
569554d9 ZJS |
2076 | !s->kill_context.send_sigkill) |
2077 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(EBUSY), | |
2078 | "Will not start SendSIGKILL=no service of type KillMode=control-group or mixed while processes exist"); | |
2079 | ||
c53d2d54 DB |
2080 | return 0; |
2081 | } | |
2082 | ||
034c6ed7 | 2083 | static void service_enter_start(Service *s) { |
4ad49000 | 2084 | ExecCommand *c; |
36c16a7c | 2085 | usec_t timeout; |
034c6ed7 LP |
2086 | pid_t pid; |
2087 | int r; | |
2088 | ||
2089 | assert(s); | |
2090 | ||
41efeaec LP |
2091 | service_unwatch_control_pid(s); |
2092 | service_unwatch_main_pid(s); | |
80876c20 | 2093 | |
c53d2d54 DB |
2094 | r = service_adverse_to_leftover_processes(s); |
2095 | if (r < 0) | |
2096 | goto fail; | |
a4634b21 | 2097 | |
867b3b7d LP |
2098 | if (s->type == SERVICE_FORKING) { |
2099 | s->control_command_id = SERVICE_EXEC_START; | |
2100 | c = s->control_command = s->exec_command[SERVICE_EXEC_START]; | |
2101 | ||
2102 | s->main_command = NULL; | |
2103 | } else { | |
2104 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
2105 | s->control_command = NULL; | |
2106 | ||
2107 | c = s->main_command = s->exec_command[SERVICE_EXEC_START]; | |
2108 | } | |
34e9ba66 | 2109 | |
96fb8242 | 2110 | if (!c) { |
47fffb35 | 2111 | if (s->type != SERVICE_ONESHOT) { |
cbc056c8 ZJS |
2112 | /* There's no command line configured for the main command? Hmm, that is strange. |
2113 | * This can only happen if the configuration changes at runtime. In this case, | |
2114 | * let's enter a failure state. */ | |
d85ff944 | 2115 | r = log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENXIO), "There's no 'start' task anymore we could start."); |
47fffb35 LP |
2116 | goto fail; |
2117 | } | |
2118 | ||
ef5ae8e7 ZJS |
2119 | /* We force a fake state transition here. Otherwise, the unit would go directly from |
2120 | * SERVICE_DEAD to SERVICE_DEAD without SERVICE_ACTIVATING or SERVICE_ACTIVE | |
5238e957 | 2121 | * in between. This way we can later trigger actions that depend on the state |
ef5ae8e7 ZJS |
2122 | * transition, including SuccessAction=. */ |
2123 | service_set_state(s, SERVICE_START); | |
2124 | ||
96fb8242 LP |
2125 | service_enter_start_post(s); |
2126 | return; | |
2127 | } | |
2128 | ||
36c16a7c LP |
2129 | if (IN_SET(s->type, SERVICE_SIMPLE, SERVICE_IDLE)) |
2130 | /* For simple + idle this is the main process. We don't apply any timeout here, but | |
2131 | * service_enter_running() will later apply the .runtime_max_usec timeout. */ | |
2132 | timeout = USEC_INFINITY; | |
2133 | else | |
2134 | timeout = s->timeout_start_usec; | |
2135 | ||
ecedd90f LP |
2136 | r = service_spawn(s, |
2137 | c, | |
36c16a7c | 2138 | timeout, |
bb0c0d6f | 2139 | EXEC_PASS_FDS|EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_SET_WATCHDOG|EXEC_WRITE_CREDENTIALS, |
ecedd90f LP |
2140 | &pid); |
2141 | if (r < 0) | |
034c6ed7 LP |
2142 | goto fail; |
2143 | ||
36c16a7c | 2144 | if (IN_SET(s->type, SERVICE_SIMPLE, SERVICE_IDLE)) { |
034c6ed7 LP |
2145 | /* For simple services we immediately start |
2146 | * the START_POST binaries. */ | |
2147 | ||
5925dd3c | 2148 | service_set_main_pid(s, pid); |
034c6ed7 LP |
2149 | service_enter_start_post(s); |
2150 | ||
2151 | } else if (s->type == SERVICE_FORKING) { | |
2152 | ||
2153 | /* For forking services we wait until the start | |
2154 | * process exited. */ | |
2155 | ||
e55224ca | 2156 | s->control_pid = pid; |
80876c20 LP |
2157 | service_set_state(s, SERVICE_START); |
2158 | ||
5686391b | 2159 | } else if (IN_SET(s->type, SERVICE_ONESHOT, SERVICE_DBUS, SERVICE_NOTIFY, SERVICE_EXEC)) { |
7d55e835 | 2160 | |
5686391b | 2161 | /* For oneshot services we wait until the start process exited, too, but it is our main process. */ |
7d55e835 | 2162 | |
5686391b LP |
2163 | /* For D-Bus services we know the main pid right away, but wait for the bus name to appear on the |
2164 | * bus. 'notify' and 'exec' services are similar. */ | |
05e343b7 | 2165 | |
5925dd3c | 2166 | service_set_main_pid(s, pid); |
80876c20 | 2167 | service_set_state(s, SERVICE_START); |
034c6ed7 LP |
2168 | } else |
2169 | assert_not_reached("Unknown service type"); | |
2170 | ||
2171 | return; | |
2172 | ||
2173 | fail: | |
f2341e0a | 2174 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start' task: %m"); |
c3fda31d | 2175 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
2176 | } |
2177 | ||
2178 | static void service_enter_start_pre(Service *s) { | |
2179 | int r; | |
2180 | ||
2181 | assert(s); | |
2182 | ||
5e94833f LP |
2183 | service_unwatch_control_pid(s); |
2184 | ||
117dcc57 ZJS |
2185 | s->control_command = s->exec_command[SERVICE_EXEC_START_PRE]; |
2186 | if (s->control_command) { | |
8f53a7b8 | 2187 | |
c53d2d54 DB |
2188 | r = service_adverse_to_leftover_processes(s); |
2189 | if (r < 0) | |
2190 | goto fail; | |
a4634b21 | 2191 | |
867b3b7d LP |
2192 | s->control_command_id = SERVICE_EXEC_START_PRE; |
2193 | ||
ecedd90f LP |
2194 | r = service_spawn(s, |
2195 | s->control_command, | |
21b2ce39 | 2196 | s->timeout_start_usec, |
1703fa41 | 2197 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_APPLY_TTY_STDIN, |
ecedd90f LP |
2198 | &s->control_pid); |
2199 | if (r < 0) | |
034c6ed7 LP |
2200 | goto fail; |
2201 | ||
80876c20 LP |
2202 | service_set_state(s, SERVICE_START_PRE); |
2203 | } else | |
034c6ed7 LP |
2204 | service_enter_start(s); |
2205 | ||
2206 | return; | |
2207 | ||
2208 | fail: | |
f2341e0a | 2209 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-pre' task: %m"); |
f42806df | 2210 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
034c6ed7 LP |
2211 | } |
2212 | ||
31cd5f63 AZ |
2213 | static void service_enter_condition(Service *s) { |
2214 | int r; | |
2215 | ||
2216 | assert(s); | |
2217 | ||
2218 | service_unwatch_control_pid(s); | |
2219 | ||
2220 | s->control_command = s->exec_command[SERVICE_EXEC_CONDITION]; | |
2221 | if (s->control_command) { | |
2222 | ||
2223 | r = service_adverse_to_leftover_processes(s); | |
2224 | if (r < 0) | |
2225 | goto fail; | |
2226 | ||
2227 | s->control_command_id = SERVICE_EXEC_CONDITION; | |
2228 | ||
2229 | r = service_spawn(s, | |
2230 | s->control_command, | |
2231 | s->timeout_start_usec, | |
2232 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_APPLY_TTY_STDIN, | |
2233 | &s->control_pid); | |
2234 | ||
2235 | if (r < 0) | |
2236 | goto fail; | |
2237 | ||
2238 | service_set_state(s, SERVICE_CONDITION); | |
2239 | } else | |
2240 | service_enter_start_pre(s); | |
2241 | ||
2242 | return; | |
2243 | ||
2244 | fail: | |
2245 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'exec-condition' task: %m"); | |
2246 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); | |
2247 | } | |
2248 | ||
034c6ed7 | 2249 | static void service_enter_restart(Service *s) { |
4afd3348 | 2250 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
034c6ed7 | 2251 | int r; |
398ef8ba | 2252 | |
034c6ed7 LP |
2253 | assert(s); |
2254 | ||
28a2dfe8 | 2255 | if (unit_has_job_type(UNIT(s), JOB_STOP)) { |
a8bb2e65 | 2256 | /* Don't restart things if we are going down anyway */ |
f2341e0a | 2257 | log_unit_info(UNIT(s), "Stop job pending for unit, delaying automatic restart."); |
2edfa366 | 2258 | |
36c16a7c | 2259 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->restart_usec)); |
a8bb2e65 | 2260 | if (r < 0) |
2edfa366 | 2261 | goto fail; |
feae8adb DW |
2262 | |
2263 | return; | |
2edfa366 LP |
2264 | } |
2265 | ||
48bb5876 DW |
2266 | /* Any units that are bound to this service must also be |
2267 | * restarted. We use JOB_RESTART (instead of the more obvious | |
2268 | * JOB_START) here so that those dependency jobs will be added | |
2269 | * as well. */ | |
50cbaba4 | 2270 | r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_REPLACE, NULL, &error, NULL); |
48bb5876 | 2271 | if (r < 0) |
034c6ed7 LP |
2272 | goto fail; |
2273 | ||
7a0019d3 LP |
2274 | /* Count the jobs we enqueue for restarting. This counter is maintained as long as the unit isn't fully |
2275 | * stopped, i.e. as long as it remains up or remains in auto-start states. The use can reset the counter | |
2276 | * explicitly however via the usual "systemctl reset-failure" logic. */ | |
2277 | s->n_restarts ++; | |
2278 | s->flush_n_restarts = false; | |
2279 | ||
c2503e35 RH |
2280 | log_unit_struct(UNIT(s), LOG_INFO, |
2281 | "MESSAGE_ID=" SD_MESSAGE_UNIT_RESTART_SCHEDULED_STR, | |
2282 | LOG_UNIT_INVOCATION_ID(UNIT(s)), | |
2283 | LOG_UNIT_MESSAGE(UNIT(s), "Scheduled restart job, restart counter is at %u.", s->n_restarts), | |
2284 | "N_RESTARTS=%u", s->n_restarts); | |
7a0019d3 LP |
2285 | |
2286 | /* Notify clients about changed restart counter */ | |
2287 | unit_add_to_dbus_queue(UNIT(s)); | |
2288 | ||
a8bb2e65 LP |
2289 | /* Note that we stay in the SERVICE_AUTO_RESTART state here, |
2290 | * it will be canceled as part of the service_stop() call that | |
2291 | * is executed as part of JOB_RESTART. */ | |
2292 | ||
034c6ed7 LP |
2293 | return; |
2294 | ||
2295 | fail: | |
2a03b9ed | 2296 | log_unit_warning(UNIT(s), "Failed to schedule restart job: %s", bus_error_message(&error, r)); |
f42806df | 2297 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); |
034c6ed7 LP |
2298 | } |
2299 | ||
308d72dc | 2300 | static void service_enter_reload_by_notify(Service *s) { |
15d167f8 JW |
2301 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
2302 | int r; | |
2303 | ||
308d72dc LP |
2304 | assert(s); |
2305 | ||
36c16a7c | 2306 | service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_start_usec)); |
308d72dc | 2307 | service_set_state(s, SERVICE_RELOAD); |
15d167f8 JW |
2308 | |
2309 | /* service_enter_reload_by_notify is never called during a reload, thus no loops are possible. */ | |
2310 | r = manager_propagate_reload(UNIT(s)->manager, UNIT(s), JOB_FAIL, &error); | |
2311 | if (r < 0) | |
2a03b9ed | 2312 | log_unit_warning(UNIT(s), "Failed to schedule propagation of reload: %s", bus_error_message(&error, r)); |
308d72dc LP |
2313 | } |
2314 | ||
034c6ed7 LP |
2315 | static void service_enter_reload(Service *s) { |
2316 | int r; | |
2317 | ||
2318 | assert(s); | |
2319 | ||
5e94833f | 2320 | service_unwatch_control_pid(s); |
95c906ae | 2321 | s->reload_result = SERVICE_SUCCESS; |
5e94833f | 2322 | |
117dcc57 ZJS |
2323 | s->control_command = s->exec_command[SERVICE_EXEC_RELOAD]; |
2324 | if (s->control_command) { | |
867b3b7d LP |
2325 | s->control_command_id = SERVICE_EXEC_RELOAD; |
2326 | ||
ecedd90f LP |
2327 | r = service_spawn(s, |
2328 | s->control_command, | |
21b2ce39 | 2329 | s->timeout_start_usec, |
78f93209 | 2330 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_CONTROL_CGROUP, |
ecedd90f LP |
2331 | &s->control_pid); |
2332 | if (r < 0) | |
034c6ed7 LP |
2333 | goto fail; |
2334 | ||
80876c20 LP |
2335 | service_set_state(s, SERVICE_RELOAD); |
2336 | } else | |
f42806df | 2337 | service_enter_running(s, SERVICE_SUCCESS); |
034c6ed7 LP |
2338 | |
2339 | return; | |
2340 | ||
2341 | fail: | |
f2341e0a | 2342 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'reload' task: %m"); |
f42806df LP |
2343 | s->reload_result = SERVICE_FAILURE_RESOURCES; |
2344 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
2345 | } |
2346 | ||
f42806df | 2347 | static void service_run_next_control(Service *s) { |
36c16a7c | 2348 | usec_t timeout; |
034c6ed7 LP |
2349 | int r; |
2350 | ||
2351 | assert(s); | |
2352 | assert(s->control_command); | |
2353 | assert(s->control_command->command_next); | |
2354 | ||
34e9ba66 | 2355 | assert(s->control_command_id != SERVICE_EXEC_START); |
034c6ed7 | 2356 | |
34e9ba66 | 2357 | s->control_command = s->control_command->command_next; |
5e94833f LP |
2358 | service_unwatch_control_pid(s); |
2359 | ||
31cd5f63 | 2360 | if (IN_SET(s->state, SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
36c16a7c LP |
2361 | timeout = s->timeout_start_usec; |
2362 | else | |
2363 | timeout = s->timeout_stop_usec; | |
2364 | ||
ecedd90f LP |
2365 | r = service_spawn(s, |
2366 | s->control_command, | |
36c16a7c | 2367 | timeout, |
1703fa41 | 2368 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL| |
31cd5f63 | 2369 | (IN_SET(s->control_command_id, SERVICE_EXEC_CONDITION, SERVICE_EXEC_START_PRE, SERVICE_EXEC_STOP_POST) ? EXEC_APPLY_TTY_STDIN : 0)| |
78f93209 LP |
2370 | (IN_SET(s->control_command_id, SERVICE_EXEC_STOP, SERVICE_EXEC_STOP_POST) ? EXEC_SETENV_RESULT : 0)| |
2371 | (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 |
2372 | &s->control_pid); |
2373 | if (r < 0) | |
034c6ed7 LP |
2374 | goto fail; |
2375 | ||
2376 | return; | |
2377 | ||
2378 | fail: | |
f2341e0a | 2379 | log_unit_warning_errno(UNIT(s), r, "Failed to run next control task: %m"); |
034c6ed7 | 2380 | |
31cd5f63 | 2381 | if (IN_SET(s->state, SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START_POST, SERVICE_STOP)) |
f42806df | 2382 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 | 2383 | else if (s->state == SERVICE_STOP_POST) |
f42806df | 2384 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
e2f3b44c | 2385 | else if (s->state == SERVICE_RELOAD) { |
f42806df LP |
2386 | s->reload_result = SERVICE_FAILURE_RESOURCES; |
2387 | service_enter_running(s, SERVICE_SUCCESS); | |
e2f3b44c | 2388 | } else |
f42806df | 2389 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
5cb5a6ff LP |
2390 | } |
2391 | ||
f42806df | 2392 | static void service_run_next_main(Service *s) { |
34e9ba66 LP |
2393 | pid_t pid; |
2394 | int r; | |
2395 | ||
2396 | assert(s); | |
867b3b7d LP |
2397 | assert(s->main_command); |
2398 | assert(s->main_command->command_next); | |
2399 | assert(s->type == SERVICE_ONESHOT); | |
34e9ba66 | 2400 | |
867b3b7d | 2401 | s->main_command = s->main_command->command_next; |
34e9ba66 LP |
2402 | service_unwatch_main_pid(s); |
2403 | ||
ecedd90f LP |
2404 | r = service_spawn(s, |
2405 | s->main_command, | |
21b2ce39 | 2406 | s->timeout_start_usec, |
1703fa41 | 2407 | EXEC_PASS_FDS|EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_SET_WATCHDOG, |
ecedd90f LP |
2408 | &pid); |
2409 | if (r < 0) | |
34e9ba66 LP |
2410 | goto fail; |
2411 | ||
2412 | service_set_main_pid(s, pid); | |
2413 | ||
2414 | return; | |
2415 | ||
2416 | fail: | |
f2341e0a | 2417 | log_unit_warning_errno(UNIT(s), r, "Failed to run next main task: %m"); |
f42806df | 2418 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
34e9ba66 LP |
2419 | } |
2420 | ||
87f0e418 LP |
2421 | static int service_start(Unit *u) { |
2422 | Service *s = SERVICE(u); | |
07299350 | 2423 | int r; |
5cb5a6ff LP |
2424 | |
2425 | assert(s); | |
2426 | ||
034c6ed7 LP |
2427 | /* We cannot fulfill this request right now, try again later |
2428 | * please! */ | |
a00973af | 2429 | if (IN_SET(s->state, |
c87700a1 | 2430 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 2431 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL, SERVICE_CLEANING)) |
5cb5a6ff LP |
2432 | return -EAGAIN; |
2433 | ||
034c6ed7 | 2434 | /* Already on it! */ |
31cd5f63 | 2435 | if (IN_SET(s->state, SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST)) |
034c6ed7 LP |
2436 | return 0; |
2437 | ||
2e9d6c12 | 2438 | /* A service that will be restarted must be stopped first to |
7f2cddae | 2439 | * trigger BindsTo and/or OnFailure dependencies. If a user |
2e9d6c12 | 2440 | * does not want to wait for the holdoff time to elapse, the |
d4943dc7 LP |
2441 | * service should be manually restarted, not started. We |
2442 | * simply return EAGAIN here, so that any start jobs stay | |
2443 | * queued, and assume that the auto restart timer will | |
2444 | * eventually trigger the restart. */ | |
2445 | if (s->state == SERVICE_AUTO_RESTART) | |
a8bb2e65 | 2446 | return -EAGAIN; |
2e9d6c12 | 2447 | |
a00973af | 2448 | assert(IN_SET(s->state, SERVICE_DEAD, SERVICE_FAILED)); |
5cb5a6ff | 2449 | |
07299350 | 2450 | /* Make sure we don't enter a busy loop of some kind. */ |
97a3f4ee | 2451 | r = unit_test_start_limit(u); |
07299350 LP |
2452 | if (r < 0) { |
2453 | service_enter_dead(s, SERVICE_FAILURE_START_LIMIT_HIT, false); | |
2454 | return r; | |
2455 | } | |
2456 | ||
4b58153d LP |
2457 | r = unit_acquire_invocation_id(u); |
2458 | if (r < 0) | |
2459 | return r; | |
2460 | ||
f42806df LP |
2461 | s->result = SERVICE_SUCCESS; |
2462 | s->reload_result = SERVICE_SUCCESS; | |
034c6ed7 | 2463 | s->main_pid_known = false; |
6dfa5494 | 2464 | s->main_pid_alien = false; |
47342320 | 2465 | s->forbid_restart = false; |
3c7416b6 | 2466 | |
a1e58e8e | 2467 | s->status_text = mfree(s->status_text); |
8cfdb077 LP |
2468 | s->status_errno = 0; |
2469 | ||
308d72dc LP |
2470 | s->notify_state = NOTIFY_UNKNOWN; |
2471 | ||
aa8c4bbf | 2472 | s->watchdog_original_usec = s->watchdog_usec; |
2787d83c | 2473 | s->watchdog_override_enable = false; |
aa8c4bbf | 2474 | s->watchdog_override_usec = USEC_INFINITY; |
2787d83c | 2475 | |
6a1d4d9f LP |
2476 | exec_command_reset_status_list_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); |
2477 | exec_status_reset(&s->main_exec_status); | |
2478 | ||
7a0019d3 LP |
2479 | /* This is not an automatic restart? Flush the restart counter then */ |
2480 | if (s->flush_n_restarts) { | |
2481 | s->n_restarts = 0; | |
2482 | s->flush_n_restarts = false; | |
2483 | } | |
2484 | ||
6a1d4d9f LP |
2485 | u->reset_accounting = true; |
2486 | ||
31cd5f63 | 2487 | service_enter_condition(s); |
82a2b6bb | 2488 | return 1; |
5cb5a6ff LP |
2489 | } |
2490 | ||
87f0e418 LP |
2491 | static int service_stop(Unit *u) { |
2492 | Service *s = SERVICE(u); | |
5cb5a6ff LP |
2493 | |
2494 | assert(s); | |
2495 | ||
a509f0e6 | 2496 | /* Don't create restart jobs from manual stops. */ |
47342320 | 2497 | s->forbid_restart = true; |
034c6ed7 | 2498 | |
e537352b | 2499 | /* Already on it */ |
a00973af | 2500 | if (IN_SET(s->state, |
dc653bf4 | 2501 | SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 2502 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) |
e537352b LP |
2503 | return 0; |
2504 | ||
f0c7b229 | 2505 | /* A restart will be scheduled or is in progress. */ |
034c6ed7 | 2506 | if (s->state == SERVICE_AUTO_RESTART) { |
0c7f15b3 | 2507 | service_set_state(s, SERVICE_DEAD); |
034c6ed7 LP |
2508 | return 0; |
2509 | } | |
2510 | ||
3f6c78dc LP |
2511 | /* If there's already something running we go directly into |
2512 | * kill mode. */ | |
31cd5f63 | 2513 | if (IN_SET(s->state, SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RELOAD, SERVICE_STOP_WATCHDOG)) { |
f42806df | 2514 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
3f6c78dc LP |
2515 | return 0; |
2516 | } | |
5cb5a6ff | 2517 | |
4c2f5842 LP |
2518 | /* If we are currently cleaning, then abort it, brutally. */ |
2519 | if (s->state == SERVICE_CLEANING) { | |
2520 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_SUCCESS); | |
2521 | return 0; | |
2522 | } | |
2523 | ||
a00973af | 2524 | assert(IN_SET(s->state, SERVICE_RUNNING, SERVICE_EXITED)); |
3a762661 | 2525 | |
f42806df | 2526 | service_enter_stop(s, SERVICE_SUCCESS); |
82a2b6bb | 2527 | return 1; |
5cb5a6ff LP |
2528 | } |
2529 | ||
87f0e418 LP |
2530 | static int service_reload(Unit *u) { |
2531 | Service *s = SERVICE(u); | |
034c6ed7 LP |
2532 | |
2533 | assert(s); | |
2534 | ||
3742095b | 2535 | assert(IN_SET(s->state, SERVICE_RUNNING, SERVICE_EXITED)); |
034c6ed7 LP |
2536 | |
2537 | service_enter_reload(s); | |
2d018ae2 | 2538 | return 1; |
5cb5a6ff LP |
2539 | } |
2540 | ||
44a6b1b6 | 2541 | _pure_ static bool service_can_reload(Unit *u) { |
87f0e418 | 2542 | Service *s = SERVICE(u); |
034c6ed7 LP |
2543 | |
2544 | assert(s); | |
2545 | ||
2546 | return !!s->exec_command[SERVICE_EXEC_RELOAD]; | |
2547 | } | |
2548 | ||
e266c068 MS |
2549 | static unsigned service_exec_command_index(Unit *u, ServiceExecCommand id, ExecCommand *current) { |
2550 | Service *s = SERVICE(u); | |
2551 | unsigned idx = 0; | |
2552 | ExecCommand *first, *c; | |
2553 | ||
2554 | assert(s); | |
5b99bd5f LP |
2555 | assert(id >= 0); |
2556 | assert(id < _SERVICE_EXEC_COMMAND_MAX); | |
e266c068 MS |
2557 | |
2558 | first = s->exec_command[id]; | |
2559 | ||
2560 | /* Figure out where we are in the list by walking back to the beginning */ | |
2561 | for (c = current; c != first; c = c->command_prev) | |
2562 | idx++; | |
2563 | ||
2564 | return idx; | |
2565 | } | |
2566 | ||
2567 | static int service_serialize_exec_command(Unit *u, FILE *f, ExecCommand *command) { | |
d68c645b LP |
2568 | _cleanup_free_ char *args = NULL, *p = NULL; |
2569 | size_t allocated = 0, length = 0; | |
e266c068 | 2570 | Service *s = SERVICE(u); |
d68c645b | 2571 | const char *type, *key; |
e266c068 MS |
2572 | ServiceExecCommand id; |
2573 | unsigned idx; | |
e266c068 | 2574 | char **arg; |
e266c068 MS |
2575 | |
2576 | assert(s); | |
2577 | assert(f); | |
2578 | ||
2579 | if (!command) | |
2580 | return 0; | |
2581 | ||
2582 | if (command == s->control_command) { | |
2583 | type = "control"; | |
2584 | id = s->control_command_id; | |
2585 | } else { | |
2586 | type = "main"; | |
2587 | id = SERVICE_EXEC_START; | |
2588 | } | |
2589 | ||
2590 | idx = service_exec_command_index(u, id, command); | |
2591 | ||
2592 | STRV_FOREACH(arg, command->argv) { | |
e266c068 | 2593 | _cleanup_free_ char *e = NULL; |
d68c645b | 2594 | size_t n; |
e266c068 | 2595 | |
d68c645b | 2596 | e = cescape(*arg); |
e266c068 | 2597 | if (!e) |
d68c645b | 2598 | return log_oom(); |
e266c068 MS |
2599 | |
2600 | n = strlen(e); | |
334c0979 | 2601 | if (!GREEDY_REALLOC(args, allocated, length + 2 + n + 2)) |
d68c645b | 2602 | return log_oom(); |
e266c068 MS |
2603 | |
2604 | if (length > 0) | |
2605 | args[length++] = ' '; | |
2606 | ||
334c0979 | 2607 | args[length++] = '"'; |
e266c068 MS |
2608 | memcpy(args + length, e, n); |
2609 | length += n; | |
334c0979 | 2610 | args[length++] = '"'; |
e266c068 MS |
2611 | } |
2612 | ||
2613 | if (!GREEDY_REALLOC(args, allocated, length + 1)) | |
d68c645b LP |
2614 | return log_oom(); |
2615 | ||
e266c068 MS |
2616 | args[length++] = 0; |
2617 | ||
d68c645b | 2618 | p = cescape(command->path); |
e266c068 | 2619 | if (!p) |
5b99bd5f | 2620 | return log_oom(); |
e266c068 | 2621 | |
d68c645b | 2622 | key = strjoina(type, "-command"); |
5b99bd5f LP |
2623 | (void) serialize_item_format(f, key, "%s %u %s %s", service_exec_command_to_string(id), idx, p, args); |
2624 | ||
2625 | return 0; | |
e266c068 MS |
2626 | } |
2627 | ||
a16e1123 LP |
2628 | static int service_serialize(Unit *u, FILE *f, FDSet *fds) { |
2629 | Service *s = SERVICE(u); | |
2339fc93 | 2630 | ServiceFDStore *fs; |
a34ceba6 | 2631 | int r; |
a16e1123 LP |
2632 | |
2633 | assert(u); | |
2634 | assert(f); | |
2635 | assert(fds); | |
2636 | ||
d68c645b LP |
2637 | (void) serialize_item(f, "state", service_state_to_string(s->state)); |
2638 | (void) serialize_item(f, "result", service_result_to_string(s->result)); | |
2639 | (void) serialize_item(f, "reload-result", service_result_to_string(s->reload_result)); | |
a16e1123 LP |
2640 | |
2641 | if (s->control_pid > 0) | |
d68c645b | 2642 | (void) serialize_item_format(f, "control-pid", PID_FMT, s->control_pid); |
a16e1123 | 2643 | |
5925dd3c | 2644 | if (s->main_pid_known && s->main_pid > 0) |
d68c645b | 2645 | (void) serialize_item_format(f, "main-pid", PID_FMT, s->main_pid); |
a16e1123 | 2646 | |
d68c645b LP |
2647 | (void) serialize_bool(f, "main-pid-known", s->main_pid_known); |
2648 | (void) serialize_bool(f, "bus-name-good", s->bus_name_good); | |
2649 | (void) serialize_bool(f, "bus-name-owner", s->bus_name_owner); | |
a16e1123 | 2650 | |
d68c645b LP |
2651 | (void) serialize_item_format(f, "n-restarts", "%u", s->n_restarts); |
2652 | (void) serialize_bool(f, "flush-n-restarts", s->flush_n_restarts); | |
7a0019d3 | 2653 | |
d68c645b | 2654 | r = serialize_item_escaped(f, "status-text", s->status_text); |
a34ceba6 LP |
2655 | if (r < 0) |
2656 | return r; | |
3a2776bc | 2657 | |
e266c068 MS |
2658 | service_serialize_exec_command(u, f, s->control_command); |
2659 | service_serialize_exec_command(u, f, s->main_command); | |
a16e1123 | 2660 | |
d68c645b | 2661 | r = serialize_fd(f, fds, "stdin-fd", s->stdin_fd); |
a34ceba6 LP |
2662 | if (r < 0) |
2663 | return r; | |
d68c645b | 2664 | r = serialize_fd(f, fds, "stdout-fd", s->stdout_fd); |
a34ceba6 LP |
2665 | if (r < 0) |
2666 | return r; | |
d68c645b | 2667 | r = serialize_fd(f, fds, "stderr-fd", s->stderr_fd); |
a34ceba6 LP |
2668 | if (r < 0) |
2669 | return r; | |
e44da745 | 2670 | |
5686391b | 2671 | if (s->exec_fd_event_source) { |
d68c645b | 2672 | r = serialize_fd(f, fds, "exec-fd", sd_event_source_get_io_fd(s->exec_fd_event_source)); |
5686391b LP |
2673 | if (r < 0) |
2674 | return r; | |
d68c645b LP |
2675 | |
2676 | (void) serialize_bool(f, "exec-fd-hot", s->exec_fd_hot); | |
5686391b LP |
2677 | } |
2678 | ||
9dfb64f8 | 2679 | if (UNIT_ISSET(s->accept_socket)) { |
d68c645b | 2680 | r = serialize_item(f, "accept-socket", UNIT_DEREF(s->accept_socket)->id); |
9dfb64f8 ZJS |
2681 | if (r < 0) |
2682 | return r; | |
2683 | } | |
2684 | ||
d68c645b | 2685 | r = serialize_fd(f, fds, "socket-fd", s->socket_fd); |
a34ceba6 LP |
2686 | if (r < 0) |
2687 | return r; | |
e44da745 | 2688 | |
2339fc93 | 2689 | LIST_FOREACH(fd_store, fs, s->fd_store) { |
8dd4c05b | 2690 | _cleanup_free_ char *c = NULL; |
2339fc93 LP |
2691 | int copy; |
2692 | ||
2693 | copy = fdset_put_dup(fds, fs->fd); | |
2694 | if (copy < 0) | |
d68c645b | 2695 | return log_error_errno(copy, "Failed to copy file descriptor for serialization: %m"); |
2339fc93 | 2696 | |
8dd4c05b | 2697 | c = cescape(fs->fdname); |
d68c645b LP |
2698 | if (!c) |
2699 | return log_oom(); | |
8dd4c05b | 2700 | |
30520492 | 2701 | (void) serialize_item_format(f, "fd-store-fd", "%i \"%s\" %i", copy, c, fs->do_poll); |
2339fc93 LP |
2702 | } |
2703 | ||
ecdbca40 | 2704 | if (s->main_exec_status.pid > 0) { |
d68c645b LP |
2705 | (void) serialize_item_format(f, "main-exec-status-pid", PID_FMT, s->main_exec_status.pid); |
2706 | (void) serialize_dual_timestamp(f, "main-exec-status-start", &s->main_exec_status.start_timestamp); | |
2707 | (void) serialize_dual_timestamp(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp); | |
ecdbca40 | 2708 | |
799fd0fd | 2709 | if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) { |
d68c645b LP |
2710 | (void) serialize_item_format(f, "main-exec-status-code", "%i", s->main_exec_status.code); |
2711 | (void) serialize_item_format(f, "main-exec-status-status", "%i", s->main_exec_status.status); | |
ecdbca40 LP |
2712 | } |
2713 | } | |
f06db334 | 2714 | |
d68c645b LP |
2715 | (void) serialize_dual_timestamp(f, "watchdog-timestamp", &s->watchdog_timestamp); |
2716 | (void) serialize_bool(f, "forbid-restart", s->forbid_restart); | |
6aca9a58 | 2717 | |
2787d83c | 2718 | if (s->watchdog_override_enable) |
d68c645b | 2719 | (void) serialize_item_format(f, "watchdog-override-usec", USEC_FMT, s->watchdog_override_usec); |
2787d83c | 2720 | |
aa8c4bbf LP |
2721 | if (s->watchdog_original_usec != USEC_INFINITY) |
2722 | (void) serialize_item_format(f, "watchdog-original-usec", USEC_FMT, s->watchdog_original_usec); | |
2723 | ||
a16e1123 LP |
2724 | return 0; |
2725 | } | |
2726 | ||
35243b77 | 2727 | int service_deserialize_exec_command( |
5b99bd5f LP |
2728 | Unit *u, |
2729 | const char *key, | |
2730 | const char *value) { | |
2731 | ||
e266c068 MS |
2732 | Service *s = SERVICE(u); |
2733 | int r; | |
2734 | unsigned idx = 0, i; | |
2735 | bool control, found = false; | |
2736 | ServiceExecCommand id = _SERVICE_EXEC_COMMAND_INVALID; | |
2737 | ExecCommand *command = NULL; | |
6eeec374 | 2738 | _cleanup_free_ char *path = NULL; |
e266c068 MS |
2739 | _cleanup_strv_free_ char **argv = NULL; |
2740 | ||
2741 | enum ExecCommandState { | |
2742 | STATE_EXEC_COMMAND_TYPE, | |
2743 | STATE_EXEC_COMMAND_INDEX, | |
2744 | STATE_EXEC_COMMAND_PATH, | |
2745 | STATE_EXEC_COMMAND_ARGS, | |
2746 | _STATE_EXEC_COMMAND_MAX, | |
2d93c20e | 2747 | _STATE_EXEC_COMMAND_INVALID = -EINVAL, |
e266c068 MS |
2748 | } state; |
2749 | ||
2750 | assert(s); | |
2751 | assert(key); | |
2752 | assert(value); | |
2753 | ||
2754 | control = streq(key, "control-command"); | |
2755 | ||
2756 | state = STATE_EXEC_COMMAND_TYPE; | |
2757 | ||
2758 | for (;;) { | |
2759 | _cleanup_free_ char *arg = NULL; | |
2760 | ||
334c0979 | 2761 | r = extract_first_word(&value, &arg, NULL, EXTRACT_CUNESCAPE | EXTRACT_UNQUOTE); |
efa3f34e LP |
2762 | if (r < 0) |
2763 | return r; | |
e266c068 MS |
2764 | if (r == 0) |
2765 | break; | |
e266c068 MS |
2766 | |
2767 | switch (state) { | |
2768 | case STATE_EXEC_COMMAND_TYPE: | |
2769 | id = service_exec_command_from_string(arg); | |
2770 | if (id < 0) | |
7211c853 | 2771 | return id; |
e266c068 MS |
2772 | |
2773 | state = STATE_EXEC_COMMAND_INDEX; | |
2774 | break; | |
2775 | case STATE_EXEC_COMMAND_INDEX: | |
2776 | r = safe_atou(arg, &idx); | |
2777 | if (r < 0) | |
7211c853 | 2778 | return r; |
e266c068 MS |
2779 | |
2780 | state = STATE_EXEC_COMMAND_PATH; | |
2781 | break; | |
2782 | case STATE_EXEC_COMMAND_PATH: | |
ae2a15bc | 2783 | path = TAKE_PTR(arg); |
e266c068 | 2784 | state = STATE_EXEC_COMMAND_ARGS; |
e266c068 MS |
2785 | break; |
2786 | case STATE_EXEC_COMMAND_ARGS: | |
2787 | r = strv_extend(&argv, arg); | |
2788 | if (r < 0) | |
2789 | return -ENOMEM; | |
2790 | break; | |
2791 | default: | |
90204792 | 2792 | assert_not_reached("Logic error in exec command deserialization"); |
e266c068 MS |
2793 | } |
2794 | } | |
2795 | ||
2796 | if (state != STATE_EXEC_COMMAND_ARGS) | |
2797 | return -EINVAL; | |
90204792 ZJS |
2798 | if (strv_isempty(argv)) |
2799 | return -EINVAL; /* At least argv[0] must be always present. */ | |
e266c068 MS |
2800 | |
2801 | /* Let's check whether exec command on given offset matches data that we just deserialized */ | |
2802 | for (command = s->exec_command[id], i = 0; command; command = command->command_next, i++) { | |
2803 | if (i != idx) | |
2804 | continue; | |
2805 | ||
2806 | found = strv_equal(argv, command->argv) && streq(command->path, path); | |
2807 | break; | |
2808 | } | |
2809 | ||
2810 | if (!found) { | |
2811 | /* Command at the index we serialized is different, let's look for command that exactly | |
2812 | * matches but is on different index. If there is no such command we will not resume execution. */ | |
2813 | for (command = s->exec_command[id]; command; command = command->command_next) | |
2814 | if (strv_equal(command->argv, argv) && streq(command->path, path)) | |
2815 | break; | |
2816 | } | |
2817 | ||
e9da62b1 | 2818 | if (command && control) { |
e266c068 | 2819 | s->control_command = command; |
e9da62b1 LP |
2820 | s->control_command_id = id; |
2821 | } else if (command) | |
e266c068 MS |
2822 | s->main_command = command; |
2823 | else | |
2824 | log_unit_warning(u, "Current command vanished from the unit file, execution of the command list won't be resumed."); | |
2825 | ||
2826 | return 0; | |
2827 | } | |
2828 | ||
a16e1123 LP |
2829 | static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { |
2830 | Service *s = SERVICE(u); | |
2339fc93 | 2831 | int r; |
a16e1123 LP |
2832 | |
2833 | assert(u); | |
2834 | assert(key); | |
2835 | assert(value); | |
2836 | assert(fds); | |
2837 | ||
2838 | if (streq(key, "state")) { | |
2839 | ServiceState state; | |
2840 | ||
117dcc57 ZJS |
2841 | state = service_state_from_string(value); |
2842 | if (state < 0) | |
f2341e0a | 2843 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
2844 | else |
2845 | s->deserialized_state = state; | |
f42806df LP |
2846 | } else if (streq(key, "result")) { |
2847 | ServiceResult f; | |
2848 | ||
2849 | f = service_result_from_string(value); | |
2850 | if (f < 0) | |
f2341e0a | 2851 | log_unit_debug(u, "Failed to parse result value: %s", value); |
f42806df LP |
2852 | else if (f != SERVICE_SUCCESS) |
2853 | s->result = f; | |
2854 | ||
2855 | } else if (streq(key, "reload-result")) { | |
2856 | ServiceResult f; | |
2857 | ||
2858 | f = service_result_from_string(value); | |
2859 | if (f < 0) | |
f2341e0a | 2860 | log_unit_debug(u, "Failed to parse reload result value: %s", value); |
f42806df LP |
2861 | else if (f != SERVICE_SUCCESS) |
2862 | s->reload_result = f; | |
a16e1123 | 2863 | |
a16e1123 | 2864 | } else if (streq(key, "control-pid")) { |
5925dd3c | 2865 | pid_t pid; |
a16e1123 | 2866 | |
e364ad06 | 2867 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2868 | log_unit_debug(u, "Failed to parse control-pid value: %s", value); |
a16e1123 | 2869 | else |
e55224ca | 2870 | s->control_pid = pid; |
a16e1123 | 2871 | } else if (streq(key, "main-pid")) { |
5925dd3c | 2872 | pid_t pid; |
a16e1123 | 2873 | |
e364ad06 | 2874 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2875 | log_unit_debug(u, "Failed to parse main-pid value: %s", value); |
eabd3e56 LP |
2876 | else |
2877 | (void) service_set_main_pid(s, pid); | |
a16e1123 LP |
2878 | } else if (streq(key, "main-pid-known")) { |
2879 | int b; | |
2880 | ||
117dcc57 ZJS |
2881 | b = parse_boolean(value); |
2882 | if (b < 0) | |
f2341e0a | 2883 | log_unit_debug(u, "Failed to parse main-pid-known value: %s", value); |
a16e1123 LP |
2884 | else |
2885 | s->main_pid_known = b; | |
de1d4f9b WF |
2886 | } else if (streq(key, "bus-name-good")) { |
2887 | int b; | |
2888 | ||
2889 | b = parse_boolean(value); | |
2890 | if (b < 0) | |
2891 | log_unit_debug(u, "Failed to parse bus-name-good value: %s", value); | |
2892 | else | |
2893 | s->bus_name_good = b; | |
d8ccf5fd DM |
2894 | } else if (streq(key, "bus-name-owner")) { |
2895 | r = free_and_strdup(&s->bus_name_owner, value); | |
2896 | if (r < 0) | |
2897 | log_unit_error_errno(u, r, "Unable to deserialize current bus owner %s: %m", value); | |
3a2776bc LP |
2898 | } else if (streq(key, "status-text")) { |
2899 | char *t; | |
2900 | ||
f2341e0a LP |
2901 | r = cunescape(value, 0, &t); |
2902 | if (r < 0) | |
5e1ee764 | 2903 | log_unit_debug_errno(u, r, "Failed to unescape status text '%s': %m", value); |
efa3f34e LP |
2904 | else |
2905 | free_and_replace(s->status_text, t); | |
3a2776bc | 2906 | |
9dfb64f8 ZJS |
2907 | } else if (streq(key, "accept-socket")) { |
2908 | Unit *socket; | |
2909 | ||
2910 | r = manager_load_unit(u->manager, value, NULL, NULL, &socket); | |
2911 | if (r < 0) | |
5e1ee764 | 2912 | log_unit_debug_errno(u, r, "Failed to load accept-socket unit '%s': %m", value); |
9dfb64f8 | 2913 | else { |
7f7d01ed | 2914 | unit_ref_set(&s->accept_socket, u, socket); |
9dfb64f8 ZJS |
2915 | SOCKET(socket)->n_connections++; |
2916 | } | |
2917 | ||
a16e1123 LP |
2918 | } else if (streq(key, "socket-fd")) { |
2919 | int fd; | |
2920 | ||
2921 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 2922 | log_unit_debug(u, "Failed to parse socket-fd value: %s", value); |
a16e1123 | 2923 | else { |
574634bc | 2924 | asynchronous_close(s->socket_fd); |
a16e1123 LP |
2925 | s->socket_fd = fdset_remove(fds, fd); |
2926 | } | |
2339fc93 | 2927 | } else if (streq(key, "fd-store-fd")) { |
30520492 | 2928 | _cleanup_free_ char *fdv = NULL, *fdn = NULL, *fdp = NULL; |
2339fc93 | 2929 | int fd; |
30520492 | 2930 | int do_poll; |
2339fc93 | 2931 | |
30520492 KL |
2932 | r = extract_first_word(&value, &fdv, NULL, 0); |
2933 | if (r <= 0 || safe_atoi(fdv, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) { | |
f2341e0a | 2934 | log_unit_debug(u, "Failed to parse fd-store-fd value: %s", value); |
30520492 KL |
2935 | return 0; |
2936 | } | |
8dd4c05b | 2937 | |
30520492 KL |
2938 | r = extract_first_word(&value, &fdn, NULL, EXTRACT_CUNESCAPE | EXTRACT_UNQUOTE); |
2939 | if (r <= 0) { | |
2940 | log_unit_debug_errno(u, r, "Failed to parse fd-store-fd value \"%s\": %m", value); | |
2941 | return 0; | |
2942 | } | |
8dd4c05b | 2943 | |
30520492 KL |
2944 | r = extract_first_word(&value, &fdp, NULL, 0); |
2945 | if (r == 0) { | |
2946 | /* If the value is not present, we assume the default */ | |
2947 | do_poll = 1; | |
2948 | } else if (r < 0 || safe_atoi(fdp, &do_poll) < 0) { | |
2949 | log_unit_debug_errno(u, r, "Failed to parse fd-store-fd value \"%s\": %m", value); | |
2950 | return 0; | |
2339fc93 LP |
2951 | } |
2952 | ||
30520492 KL |
2953 | r = service_add_fd_store(s, fd, fdn, do_poll); |
2954 | if (r < 0) | |
2955 | log_unit_error_errno(u, r, "Failed to add fd to store: %m"); | |
2956 | else | |
2957 | fdset_remove(fds, fd); | |
ecdbca40 LP |
2958 | } else if (streq(key, "main-exec-status-pid")) { |
2959 | pid_t pid; | |
2960 | ||
e364ad06 | 2961 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2962 | log_unit_debug(u, "Failed to parse main-exec-status-pid value: %s", value); |
ecdbca40 LP |
2963 | else |
2964 | s->main_exec_status.pid = pid; | |
2965 | } else if (streq(key, "main-exec-status-code")) { | |
2966 | int i; | |
2967 | ||
e364ad06 | 2968 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 2969 | log_unit_debug(u, "Failed to parse main-exec-status-code value: %s", value); |
ecdbca40 LP |
2970 | else |
2971 | s->main_exec_status.code = i; | |
2972 | } else if (streq(key, "main-exec-status-status")) { | |
2973 | int i; | |
2974 | ||
e364ad06 | 2975 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 2976 | log_unit_debug(u, "Failed to parse main-exec-status-status value: %s", value); |
ecdbca40 LP |
2977 | else |
2978 | s->main_exec_status.status = i; | |
799fd0fd | 2979 | } else if (streq(key, "main-exec-status-start")) |
d68c645b | 2980 | deserialize_dual_timestamp(value, &s->main_exec_status.start_timestamp); |
799fd0fd | 2981 | else if (streq(key, "main-exec-status-exit")) |
d68c645b | 2982 | deserialize_dual_timestamp(value, &s->main_exec_status.exit_timestamp); |
a6927d7f | 2983 | else if (streq(key, "watchdog-timestamp")) |
d68c645b | 2984 | deserialize_dual_timestamp(value, &s->watchdog_timestamp); |
613b411c | 2985 | else if (streq(key, "forbid-restart")) { |
6aca9a58 SE |
2986 | int b; |
2987 | ||
2988 | b = parse_boolean(value); | |
2989 | if (b < 0) | |
f2341e0a | 2990 | log_unit_debug(u, "Failed to parse forbid-restart value: %s", value); |
6aca9a58 SE |
2991 | else |
2992 | s->forbid_restart = b; | |
a34ceba6 LP |
2993 | } else if (streq(key, "stdin-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 stdin-fd value: %s", value); | |
2998 | else { | |
2999 | asynchronous_close(s->stdin_fd); | |
3000 | s->stdin_fd = fdset_remove(fds, fd); | |
1e22b5cd | 3001 | s->exec_context.stdio_as_fds = true; |
a34ceba6 LP |
3002 | } |
3003 | } else if (streq(key, "stdout-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 stdout-fd value: %s", value); | |
3008 | else { | |
3009 | asynchronous_close(s->stdout_fd); | |
3010 | s->stdout_fd = fdset_remove(fds, fd); | |
1e22b5cd | 3011 | s->exec_context.stdio_as_fds = true; |
a34ceba6 LP |
3012 | } |
3013 | } else if (streq(key, "stderr-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 stderr-fd value: %s", value); | |
3018 | else { | |
3019 | asynchronous_close(s->stderr_fd); | |
3020 | s->stderr_fd = fdset_remove(fds, fd); | |
1e22b5cd | 3021 | s->exec_context.stdio_as_fds = true; |
a34ceba6 | 3022 | } |
5686391b LP |
3023 | } else if (streq(key, "exec-fd")) { |
3024 | int fd; | |
3025 | ||
3026 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
3027 | log_unit_debug(u, "Failed to parse exec-fd value: %s", value); | |
3028 | else { | |
3029 | s->exec_fd_event_source = sd_event_source_unref(s->exec_fd_event_source); | |
3030 | ||
3031 | fd = fdset_remove(fds, fd); | |
3032 | if (service_allocate_exec_fd_event_source(s, fd, &s->exec_fd_event_source) < 0) | |
3033 | safe_close(fd); | |
3034 | } | |
2787d83c | 3035 | } else if (streq(key, "watchdog-override-usec")) { |
d68c645b | 3036 | if (deserialize_usec(value, &s->watchdog_override_usec) < 0) |
2787d83c | 3037 | log_unit_debug(u, "Failed to parse watchdog_override_usec value: %s", value); |
d68c645b | 3038 | else |
2787d83c | 3039 | s->watchdog_override_enable = true; |
d68c645b | 3040 | |
aa8c4bbf LP |
3041 | } else if (streq(key, "watchdog-original-usec")) { |
3042 | if (deserialize_usec(value, &s->watchdog_original_usec) < 0) | |
3043 | log_unit_debug(u, "Failed to parse watchdog_original_usec value: %s", value); | |
3044 | ||
e266c068 MS |
3045 | } else if (STR_IN_SET(key, "main-command", "control-command")) { |
3046 | r = service_deserialize_exec_command(u, key, value); | |
3047 | if (r < 0) | |
3048 | log_unit_debug_errno(u, r, "Failed to parse serialized command \"%s\": %m", value); | |
7a0019d3 LP |
3049 | |
3050 | } else if (streq(key, "n-restarts")) { | |
3051 | r = safe_atou(value, &s->n_restarts); | |
3052 | if (r < 0) | |
3053 | log_unit_debug_errno(u, r, "Failed to parse serialized restart counter '%s': %m", value); | |
3054 | ||
3055 | } else if (streq(key, "flush-n-restarts")) { | |
3056 | r = parse_boolean(value); | |
3057 | if (r < 0) | |
3058 | log_unit_debug_errno(u, r, "Failed to parse serialized flush restart counter setting '%s': %m", value); | |
3059 | else | |
3060 | s->flush_n_restarts = r; | |
c17ec25e | 3061 | } else |
f2341e0a | 3062 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
3063 | |
3064 | return 0; | |
3065 | } | |
3066 | ||
44a6b1b6 | 3067 | _pure_ static UnitActiveState service_active_state(Unit *u) { |
e056b01d LP |
3068 | const UnitActiveState *table; |
3069 | ||
87f0e418 | 3070 | assert(u); |
5cb5a6ff | 3071 | |
e056b01d LP |
3072 | table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
3073 | ||
3074 | return table[SERVICE(u)->state]; | |
034c6ed7 LP |
3075 | } |
3076 | ||
10a94420 LP |
3077 | static const char *service_sub_state_to_string(Unit *u) { |
3078 | assert(u); | |
3079 | ||
3080 | return service_state_to_string(SERVICE(u)->state); | |
3081 | } | |
3082 | ||
f2f725e5 | 3083 | static bool service_may_gc(Unit *u) { |
701cc384 LP |
3084 | Service *s = SERVICE(u); |
3085 | ||
3086 | assert(s); | |
3087 | ||
e98b2fbb | 3088 | /* Never clean up services that still have a process around, even if the service is formally dead. Note that |
f2f725e5 | 3089 | * unit_may_gc() already checked our cgroup for us, we just check our two additional PIDs, too, in case they |
e98b2fbb LP |
3090 | * have moved outside of the cgroup. */ |
3091 | ||
3092 | if (main_pid_good(s) > 0 || | |
6d55002a | 3093 | control_pid_good(s) > 0) |
f2f725e5 | 3094 | return false; |
6d55002a | 3095 | |
f2f725e5 | 3096 | return true; |
6d55002a LP |
3097 | } |
3098 | ||
3a111838 MS |
3099 | static int service_retry_pid_file(Service *s) { |
3100 | int r; | |
3101 | ||
3102 | assert(s->pid_file); | |
3742095b | 3103 | assert(IN_SET(s->state, SERVICE_START, SERVICE_START_POST)); |
3a111838 MS |
3104 | |
3105 | r = service_load_pid_file(s, false); | |
3106 | if (r < 0) | |
3107 | return r; | |
3108 | ||
3109 | service_unwatch_pid_file(s); | |
3110 | ||
f42806df | 3111 | service_enter_running(s, SERVICE_SUCCESS); |
3a111838 MS |
3112 | return 0; |
3113 | } | |
3114 | ||
3115 | static int service_watch_pid_file(Service *s) { | |
3116 | int r; | |
3117 | ||
f2341e0a | 3118 | log_unit_debug(UNIT(s), "Setting watch for PID file %s", s->pid_file_pathspec->path); |
8bb2d17d | 3119 | |
5686391b | 3120 | r = path_spec_watch(s->pid_file_pathspec, service_dispatch_inotify_io); |
3a111838 MS |
3121 | if (r < 0) |
3122 | goto fail; | |
3123 | ||
3124 | /* the pidfile might have appeared just before we set the watch */ | |
f2341e0a | 3125 | log_unit_debug(UNIT(s), "Trying to read PID file %s in case it changed", s->pid_file_pathspec->path); |
3a111838 MS |
3126 | service_retry_pid_file(s); |
3127 | ||
3128 | return 0; | |
3129 | fail: | |
f2341e0a | 3130 | log_unit_error_errno(UNIT(s), r, "Failed to set a watch for PID file %s: %m", s->pid_file_pathspec->path); |
3a111838 MS |
3131 | service_unwatch_pid_file(s); |
3132 | return r; | |
3133 | } | |
3134 | ||
3135 | static int service_demand_pid_file(Service *s) { | |
3136 | PathSpec *ps; | |
3137 | ||
3138 | assert(s->pid_file); | |
3139 | assert(!s->pid_file_pathspec); | |
3140 | ||
3141 | ps = new0(PathSpec, 1); | |
3142 | if (!ps) | |
3143 | return -ENOMEM; | |
3144 | ||
718db961 | 3145 | ps->unit = UNIT(s); |
3a111838 MS |
3146 | ps->path = strdup(s->pid_file); |
3147 | if (!ps->path) { | |
3148 | free(ps); | |
3149 | return -ENOMEM; | |
3150 | } | |
3151 | ||
858d36c1 | 3152 | path_simplify(ps->path, false); |
3a111838 MS |
3153 | |
3154 | /* PATH_CHANGED would not be enough. There are daemons (sendmail) that | |
3155 | * keep their PID file open all the time. */ | |
3156 | ps->type = PATH_MODIFIED; | |
3157 | ps->inotify_fd = -1; | |
3158 | ||
3159 | s->pid_file_pathspec = ps; | |
3160 | ||
3161 | return service_watch_pid_file(s); | |
3162 | } | |
3163 | ||
5686391b | 3164 | static int service_dispatch_inotify_io(sd_event_source *source, int fd, uint32_t events, void *userdata) { |
e14c2802 LP |
3165 | PathSpec *p = userdata; |
3166 | Service *s; | |
3167 | ||
3168 | assert(p); | |
3169 | ||
3170 | s = SERVICE(p->unit); | |
3a111838 MS |
3171 | |
3172 | assert(s); | |
3173 | assert(fd >= 0); | |
3742095b | 3174 | assert(IN_SET(s->state, SERVICE_START, SERVICE_START_POST)); |
3a111838 | 3175 | assert(s->pid_file_pathspec); |
57020a3a | 3176 | assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd)); |
3a111838 | 3177 | |
f2341e0a | 3178 | log_unit_debug(UNIT(s), "inotify event"); |
3a111838 | 3179 | |
e14c2802 | 3180 | if (path_spec_fd_event(p, events) < 0) |
3a111838 MS |
3181 | goto fail; |
3182 | ||
3183 | if (service_retry_pid_file(s) == 0) | |
718db961 | 3184 | return 0; |
3a111838 MS |
3185 | |
3186 | if (service_watch_pid_file(s) < 0) | |
3187 | goto fail; | |
3188 | ||
718db961 LP |
3189 | return 0; |
3190 | ||
3a111838 MS |
3191 | fail: |
3192 | service_unwatch_pid_file(s); | |
f42806df | 3193 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
718db961 | 3194 | return 0; |
3a111838 MS |
3195 | } |
3196 | ||
5686391b LP |
3197 | static int service_dispatch_exec_io(sd_event_source *source, int fd, uint32_t events, void *userdata) { |
3198 | Service *s = SERVICE(userdata); | |
3199 | ||
3200 | assert(s); | |
3201 | ||
3202 | log_unit_debug(UNIT(s), "got exec-fd event"); | |
3203 | ||
3204 | /* If Type=exec is set, we'll consider a service started successfully the instant we invoked execve() | |
3205 | * successfully for it. We implement this through a pipe() towards the child, which the kernel automatically | |
3206 | * closes for us due to O_CLOEXEC on execve() in the child, which then triggers EOF on the pipe in the | |
3207 | * parent. We need to be careful however, as there are other reasons that we might cause the child's side of | |
3208 | * the pipe to be closed (for example, a simple exit()). To deal with that we'll ignore EOFs on the pipe unless | |
3209 | * the child signalled us first that it is about to call the execve(). It does so by sending us a simple | |
3210 | * non-zero byte via the pipe. We also provide the child with a way to inform us in case execve() failed: if it | |
3211 | * sends a zero byte we'll ignore POLLHUP on the fd again. */ | |
3212 | ||
3213 | for (;;) { | |
3214 | uint8_t x; | |
3215 | ssize_t n; | |
3216 | ||
3217 | n = read(fd, &x, sizeof(x)); | |
3218 | if (n < 0) { | |
3219 | if (errno == EAGAIN) /* O_NONBLOCK in effect → everything queued has now been processed. */ | |
3220 | return 0; | |
3221 | ||
3222 | return log_unit_error_errno(UNIT(s), errno, "Failed to read from exec_fd: %m"); | |
3223 | } | |
3224 | if (n == 0) { /* EOF → the event we are waiting for */ | |
3225 | ||
3226 | s->exec_fd_event_source = sd_event_source_unref(s->exec_fd_event_source); | |
3227 | ||
3228 | if (s->exec_fd_hot) { /* Did the child tell us to expect EOF now? */ | |
3229 | log_unit_debug(UNIT(s), "Got EOF on exec-fd"); | |
3230 | ||
3231 | s->exec_fd_hot = false; | |
3232 | ||
3233 | /* Nice! This is what we have been waiting for. Transition to next state. */ | |
3234 | if (s->type == SERVICE_EXEC && s->state == SERVICE_START) | |
3235 | service_enter_start_post(s); | |
3236 | } else | |
3237 | log_unit_debug(UNIT(s), "Got EOF on exec-fd while it was disabled, ignoring."); | |
3238 | ||
3239 | return 0; | |
3240 | } | |
3241 | ||
3242 | /* A byte was read → this turns on/off the exec fd logic */ | |
3243 | assert(n == sizeof(x)); | |
3244 | s->exec_fd_hot = x; | |
3245 | } | |
3246 | ||
3247 | return 0; | |
3248 | } | |
3249 | ||
a911bb9a LP |
3250 | static void service_notify_cgroup_empty_event(Unit *u) { |
3251 | Service *s = SERVICE(u); | |
3252 | ||
3253 | assert(u); | |
3254 | ||
a5b5aece | 3255 | log_unit_debug(u, "Control group is empty."); |
a911bb9a LP |
3256 | |
3257 | switch (s->state) { | |
3258 | ||
3259 | /* Waiting for SIGCHLD is usually more interesting, | |
3260 | * because it includes return codes/signals. Which is | |
3261 | * why we ignore the cgroup events for most cases, | |
3262 | * except when we don't know pid which to expect the | |
3263 | * SIGCHLD for. */ | |
3264 | ||
3265 | case SERVICE_START: | |
3c751b1b LP |
3266 | if (s->type == SERVICE_NOTIFY && |
3267 | main_pid_good(s) == 0 && | |
3268 | control_pid_good(s) == 0) { | |
3d474ef7 | 3269 | /* No chance of getting a ready notification anymore */ |
c3fda31d | 3270 | service_enter_stop_post(s, SERVICE_FAILURE_PROTOCOL); |
71e529fc JW |
3271 | break; |
3272 | } | |
3273 | ||
4831981d | 3274 | _fallthrough_; |
71e529fc | 3275 | case SERVICE_START_POST: |
3c751b1b LP |
3276 | if (s->pid_file_pathspec && |
3277 | main_pid_good(s) == 0 && | |
3278 | control_pid_good(s) == 0) { | |
3279 | ||
3d474ef7 | 3280 | /* Give up hoping for the daemon to write its PID file */ |
f2341e0a | 3281 | log_unit_warning(u, "Daemon never wrote its PID file. Failing."); |
8bb2d17d | 3282 | |
a911bb9a LP |
3283 | service_unwatch_pid_file(s); |
3284 | if (s->state == SERVICE_START) | |
c3fda31d | 3285 | service_enter_stop_post(s, SERVICE_FAILURE_PROTOCOL); |
a911bb9a | 3286 | else |
c35755fb | 3287 | service_enter_stop(s, SERVICE_FAILURE_PROTOCOL); |
a911bb9a LP |
3288 | } |
3289 | break; | |
3290 | ||
3291 | case SERVICE_RUNNING: | |
3292 | /* service_enter_running() will figure out what to do */ | |
3293 | service_enter_running(s, SERVICE_SUCCESS); | |
3294 | break; | |
3295 | ||
c87700a1 | 3296 | case SERVICE_STOP_WATCHDOG: |
a911bb9a LP |
3297 | case SERVICE_STOP_SIGTERM: |
3298 | case SERVICE_STOP_SIGKILL: | |
3299 | ||
b13ddbbc | 3300 | if (main_pid_good(s) <= 0 && control_pid_good(s) <= 0) |
a911bb9a LP |
3301 | service_enter_stop_post(s, SERVICE_SUCCESS); |
3302 | ||
3303 | break; | |
3304 | ||
3305 | case SERVICE_STOP_POST: | |
bf760801 | 3306 | case SERVICE_FINAL_WATCHDOG: |
a911bb9a LP |
3307 | case SERVICE_FINAL_SIGTERM: |
3308 | case SERVICE_FINAL_SIGKILL: | |
b13ddbbc | 3309 | if (main_pid_good(s) <= 0 && control_pid_good(s) <= 0) |
a911bb9a LP |
3310 | service_enter_dead(s, SERVICE_SUCCESS, true); |
3311 | ||
3312 | break; | |
3313 | ||
e08dabfe AZ |
3314 | /* If the cgroup empty notification comes when the unit is not active, we must have failed to clean |
3315 | * up the cgroup earlier and should do it now. */ | |
3316 | case SERVICE_DEAD: | |
3317 | case SERVICE_FAILED: | |
3318 | unit_prune_cgroup(u); | |
3319 | break; | |
3320 | ||
a911bb9a LP |
3321 | default: |
3322 | ; | |
3323 | } | |
3324 | } | |
3325 | ||
afcfaa69 LP |
3326 | static void service_notify_cgroup_oom_event(Unit *u) { |
3327 | Service *s = SERVICE(u); | |
3328 | ||
3329 | log_unit_debug(u, "Process of control group was killed by the OOM killer."); | |
3330 | ||
3331 | if (s->oom_policy == OOM_CONTINUE) | |
3332 | return; | |
3333 | ||
3334 | switch (s->state) { | |
3335 | ||
31cd5f63 | 3336 | case SERVICE_CONDITION: |
afcfaa69 LP |
3337 | case SERVICE_START_PRE: |
3338 | case SERVICE_START: | |
3339 | case SERVICE_START_POST: | |
3340 | case SERVICE_STOP: | |
3341 | if (s->oom_policy == OOM_STOP) | |
3342 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_OOM_KILL); | |
3343 | else if (s->oom_policy == OOM_KILL) | |
3344 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_OOM_KILL); | |
3345 | ||
3346 | break; | |
3347 | ||
3348 | case SERVICE_EXITED: | |
3349 | case SERVICE_RUNNING: | |
3350 | if (s->oom_policy == OOM_STOP) | |
3351 | service_enter_stop(s, SERVICE_FAILURE_OOM_KILL); | |
3352 | else if (s->oom_policy == OOM_KILL) | |
3353 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_OOM_KILL); | |
3354 | ||
3355 | break; | |
3356 | ||
3357 | case SERVICE_STOP_WATCHDOG: | |
3358 | case SERVICE_STOP_SIGTERM: | |
3359 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_OOM_KILL); | |
3360 | break; | |
3361 | ||
3362 | case SERVICE_STOP_SIGKILL: | |
3363 | case SERVICE_FINAL_SIGKILL: | |
3364 | if (s->result == SERVICE_SUCCESS) | |
3365 | s->result = SERVICE_FAILURE_OOM_KILL; | |
3366 | break; | |
3367 | ||
3368 | case SERVICE_STOP_POST: | |
3369 | case SERVICE_FINAL_SIGTERM: | |
3370 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_OOM_KILL); | |
3371 | break; | |
3372 | ||
3373 | default: | |
3374 | ; | |
3375 | } | |
3376 | } | |
3377 | ||
87f0e418 | 3378 | static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
5cdabc8d | 3379 | bool notify_dbus = true; |
87f0e418 | 3380 | Service *s = SERVICE(u); |
f42806df | 3381 | ServiceResult f; |
e5123725 | 3382 | ExitClean clean_mode; |
5cb5a6ff LP |
3383 | |
3384 | assert(s); | |
034c6ed7 LP |
3385 | assert(pid >= 0); |
3386 | ||
e5123725 AZ |
3387 | /* Oneshot services and non-SERVICE_EXEC_START commands should not be |
3388 | * considered daemons as they are typically not long running. */ | |
3389 | if (s->type == SERVICE_ONESHOT || (s->control_pid == pid && s->control_command_id != SERVICE_EXEC_START)) | |
3390 | clean_mode = EXIT_CLEAN_COMMAND; | |
3391 | else | |
3392 | clean_mode = EXIT_CLEAN_DAEMON; | |
3393 | ||
3394 | if (is_clean_exit(code, status, clean_mode, &s->success_status)) | |
f42806df LP |
3395 | f = SERVICE_SUCCESS; |
3396 | else if (code == CLD_EXITED) | |
3397 | f = SERVICE_FAILURE_EXIT_CODE; | |
3398 | else if (code == CLD_KILLED) | |
3399 | f = SERVICE_FAILURE_SIGNAL; | |
3400 | else if (code == CLD_DUMPED) | |
3401 | f = SERVICE_FAILURE_CORE_DUMP; | |
d06dacd0 | 3402 | else |
cfc4eb4c | 3403 | assert_not_reached("Unknown code"); |
034c6ed7 | 3404 | |
cb0e818f HC |
3405 | /* Services with ExitType=cgroup ignore the main PID for purposes of exit status */ |
3406 | if (s->exit_type == SERVICE_EXIT_CGROUP && s->main_pid == pid) { | |
3407 | service_unwatch_main_pid(s); | |
3408 | s->main_pid_known = false; | |
3409 | } | |
3410 | ||
3411 | if ((s->exit_type == SERVICE_EXIT_MAIN && s->main_pid == pid) || | |
3412 | (s->exit_type == SERVICE_EXIT_CGROUP && cgroup_empty(s) && !control_pid_good(s))) { | |
db01f8b3 MS |
3413 | /* Forking services may occasionally move to a new PID. |
3414 | * As long as they update the PID file before exiting the old | |
3415 | * PID, they're fine. */ | |
db256aab | 3416 | if (service_load_pid_file(s, false) > 0) |
db01f8b3 | 3417 | return; |
034c6ed7 | 3418 | |
034c6ed7 | 3419 | s->main_pid = 0; |
6ea832a2 | 3420 | exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status); |
034c6ed7 | 3421 | |
867b3b7d | 3422 | if (s->main_command) { |
fbeefb45 LP |
3423 | /* If this is not a forking service than the |
3424 | * main process got started and hence we copy | |
3425 | * the exit status so that it is recorded both | |
3426 | * as main and as control process exit | |
3427 | * status */ | |
3428 | ||
867b3b7d | 3429 | s->main_command->exec_status = s->main_exec_status; |
b708e7ce | 3430 | |
3ed0cd26 | 3431 | if (s->main_command->flags & EXEC_COMMAND_IGNORE_FAILURE) |
f42806df | 3432 | f = SERVICE_SUCCESS; |
fbeefb45 LP |
3433 | } else if (s->exec_command[SERVICE_EXEC_START]) { |
3434 | ||
3435 | /* If this is a forked process, then we should | |
3436 | * ignore the return value if this was | |
3437 | * configured for the starter process */ | |
3438 | ||
3ed0cd26 | 3439 | if (s->exec_command[SERVICE_EXEC_START]->flags & EXEC_COMMAND_IGNORE_FAILURE) |
fbeefb45 | 3440 | f = SERVICE_SUCCESS; |
034c6ed7 LP |
3441 | } |
3442 | ||
91bbd9b7 | 3443 | unit_log_process_exit( |
5cc2cd1c | 3444 | u, |
cb0e818f | 3445 | s->exit_type == SERVICE_EXIT_CGROUP ? "Last process" : "Main process", |
91bbd9b7 | 3446 | service_exec_command_to_string(SERVICE_EXEC_START), |
5cc2cd1c | 3447 | f == SERVICE_SUCCESS, |
91bbd9b7 | 3448 | code, status); |
f42806df | 3449 | |
a0fef983 | 3450 | if (s->result == SERVICE_SUCCESS) |
f42806df | 3451 | s->result = f; |
034c6ed7 | 3452 | |
867b3b7d LP |
3453 | if (s->main_command && |
3454 | s->main_command->command_next && | |
b58aeb70 | 3455 | s->type == SERVICE_ONESHOT && |
f42806df | 3456 | f == SERVICE_SUCCESS) { |
034c6ed7 | 3457 | |
34e9ba66 LP |
3458 | /* There is another command to * |
3459 | * execute, so let's do that. */ | |
034c6ed7 | 3460 | |
f2341e0a | 3461 | log_unit_debug(u, "Running next main command for state %s.", service_state_to_string(s->state)); |
f42806df | 3462 | service_run_next_main(s); |
034c6ed7 | 3463 | |
34e9ba66 LP |
3464 | } else { |
3465 | ||
3466 | /* The service exited, so the service is officially | |
3467 | * gone. */ | |
867b3b7d | 3468 | s->main_command = NULL; |
34e9ba66 LP |
3469 | |
3470 | switch (s->state) { | |
3471 | ||
3472 | case SERVICE_START_POST: | |
3473 | case SERVICE_RELOAD: | |
bbe19f68 PM |
3474 | /* If neither main nor control processes are running then |
3475 | * the current state can never exit cleanly, hence immediately | |
3476 | * terminate the service. */ | |
3477 | if (control_pid_good(s) <= 0) | |
3478 | service_enter_stop(s, f); | |
3479 | ||
8170992a | 3480 | /* Otherwise need to wait until the operation is done. */ |
bbe19f68 PM |
3481 | break; |
3482 | ||
34e9ba66 LP |
3483 | case SERVICE_STOP: |
3484 | /* Need to wait until the operation is | |
3485 | * done */ | |
c4653a4d | 3486 | break; |
7d55e835 | 3487 | |
34e9ba66 LP |
3488 | case SERVICE_START: |
3489 | if (s->type == SERVICE_ONESHOT) { | |
3490 | /* This was our main goal, so let's go on */ | |
f42806df | 3491 | if (f == SERVICE_SUCCESS) |
34e9ba66 LP |
3492 | service_enter_start_post(s); |
3493 | else | |
c3fda31d | 3494 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
34e9ba66 | 3495 | break; |
3d474ef7 JW |
3496 | } else if (s->type == SERVICE_NOTIFY) { |
3497 | /* Only enter running through a notification, so that the | |
3498 | * SERVICE_START state signifies that no ready notification | |
3499 | * has been received */ | |
3500 | if (f != SERVICE_SUCCESS) | |
c3fda31d | 3501 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
df66b93f JW |
3502 | else if (!s->remain_after_exit || s->notify_access == NOTIFY_MAIN) |
3503 | /* The service has never been and will never be active */ | |
c3fda31d | 3504 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_PROTOCOL); |
3d474ef7 | 3505 | break; |
34e9ba66 | 3506 | } |
034c6ed7 | 3507 | |
4831981d | 3508 | _fallthrough_; |
34e9ba66 | 3509 | case SERVICE_RUNNING: |
f42806df | 3510 | service_enter_running(s, f); |
34e9ba66 | 3511 | break; |
034c6ed7 | 3512 | |
c87700a1 | 3513 | case SERVICE_STOP_WATCHDOG: |
34e9ba66 LP |
3514 | case SERVICE_STOP_SIGTERM: |
3515 | case SERVICE_STOP_SIGKILL: | |
5cb5a6ff | 3516 | |
b13ddbbc | 3517 | if (control_pid_good(s) <= 0) |
f42806df | 3518 | service_enter_stop_post(s, f); |
5cb5a6ff | 3519 | |
34e9ba66 LP |
3520 | /* If there is still a control process, wait for that first */ |
3521 | break; | |
3522 | ||
bf108e55 | 3523 | case SERVICE_STOP_POST: |
c1566ef0 AZ |
3524 | |
3525 | if (control_pid_good(s) <= 0) | |
3526 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, f); | |
3527 | ||
3528 | break; | |
3529 | ||
bf760801 | 3530 | case SERVICE_FINAL_WATCHDOG: |
bf108e55 LP |
3531 | case SERVICE_FINAL_SIGTERM: |
3532 | case SERVICE_FINAL_SIGKILL: | |
3533 | ||
b13ddbbc | 3534 | if (control_pid_good(s) <= 0) |
bf108e55 LP |
3535 | service_enter_dead(s, f, true); |
3536 | break; | |
3537 | ||
34e9ba66 LP |
3538 | default: |
3539 | assert_not_reached("Uh, main process died at wrong time."); | |
3540 | } | |
034c6ed7 | 3541 | } |
5cb5a6ff | 3542 | |
034c6ed7 | 3543 | } else if (s->control_pid == pid) { |
34e9ba66 LP |
3544 | s->control_pid = 0; |
3545 | ||
b708e7ce | 3546 | if (s->control_command) { |
8bb2d17d | 3547 | exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status); |
a16e1123 | 3548 | |
3ed0cd26 | 3549 | if (s->control_command->flags & EXEC_COMMAND_IGNORE_FAILURE) |
f42806df | 3550 | f = SERVICE_SUCCESS; |
b708e7ce LP |
3551 | } |
3552 | ||
42e6f549 AZ |
3553 | /* ExecCondition= calls that exit with (0, 254] should invoke skip-like behavior instead of failing */ |
3554 | if (s->state == SERVICE_CONDITION) { | |
3555 | if (f == SERVICE_FAILURE_EXIT_CODE && status < 255) { | |
3556 | UNIT(s)->condition_result = false; | |
3557 | f = SERVICE_SKIP_CONDITION; | |
3558 | } else if (f == SERVICE_SUCCESS) | |
3559 | UNIT(s)->condition_result = true; | |
3560 | } | |
3561 | ||
91bbd9b7 | 3562 | unit_log_process_exit( |
5cc2cd1c | 3563 | u, |
91bbd9b7 LP |
3564 | "Control process", |
3565 | service_exec_command_to_string(s->control_command_id), | |
5cc2cd1c | 3566 | f == SERVICE_SUCCESS, |
91bbd9b7 | 3567 | code, status); |
f42806df | 3568 | |
d611cfa7 | 3569 | if (s->state != SERVICE_RELOAD && s->result == SERVICE_SUCCESS) |
f42806df | 3570 | s->result = f; |
034c6ed7 | 3571 | |
34e9ba66 LP |
3572 | if (s->control_command && |
3573 | s->control_command->command_next && | |
f42806df | 3574 | f == SERVICE_SUCCESS) { |
034c6ed7 LP |
3575 | |
3576 | /* There is another command to * | |
3577 | * execute, so let's do that. */ | |
3578 | ||
f2341e0a | 3579 | log_unit_debug(u, "Running next control command for state %s.", service_state_to_string(s->state)); |
f42806df | 3580 | service_run_next_control(s); |
034c6ed7 | 3581 | |
80876c20 | 3582 | } else { |
034c6ed7 LP |
3583 | /* No further commands for this step, so let's |
3584 | * figure out what to do next */ | |
3585 | ||
a16e1123 LP |
3586 | s->control_command = NULL; |
3587 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
3588 | ||
f2341e0a | 3589 | log_unit_debug(u, "Got final SIGCHLD for state %s.", service_state_to_string(s->state)); |
bd982a8b | 3590 | |
034c6ed7 LP |
3591 | switch (s->state) { |
3592 | ||
31cd5f63 AZ |
3593 | case SERVICE_CONDITION: |
3594 | if (f == SERVICE_SUCCESS) | |
3595 | service_enter_start_pre(s); | |
3596 | else | |
3597 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); | |
3598 | break; | |
3599 | ||
034c6ed7 | 3600 | case SERVICE_START_PRE: |
f42806df | 3601 | if (f == SERVICE_SUCCESS) |
034c6ed7 LP |
3602 | service_enter_start(s); |
3603 | else | |
c3fda31d | 3604 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
034c6ed7 LP |
3605 | break; |
3606 | ||
3607 | case SERVICE_START: | |
bfba3256 LP |
3608 | if (s->type != SERVICE_FORKING) |
3609 | /* Maybe spurious event due to a reload that changed the type? */ | |
3610 | break; | |
034c6ed7 | 3611 | |
f42806df | 3612 | if (f != SERVICE_SUCCESS) { |
c3fda31d | 3613 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
3a111838 MS |
3614 | break; |
3615 | } | |
034c6ed7 | 3616 | |
3a111838 | 3617 | if (s->pid_file) { |
f42806df LP |
3618 | bool has_start_post; |
3619 | int r; | |
3620 | ||
3a111838 MS |
3621 | /* Let's try to load the pid file here if we can. |
3622 | * The PID file might actually be created by a START_POST | |
3623 | * script. In that case don't worry if the loading fails. */ | |
f42806df | 3624 | |
5d904a6a | 3625 | has_start_post = s->exec_command[SERVICE_EXEC_START_POST]; |
f42806df | 3626 | r = service_load_pid_file(s, !has_start_post); |
3a111838 MS |
3627 | if (!has_start_post && r < 0) { |
3628 | r = service_demand_pid_file(s); | |
b13ddbbc | 3629 | if (r < 0 || cgroup_good(s) == 0) |
c3fda31d | 3630 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_PROTOCOL); |
3a111838 MS |
3631 | break; |
3632 | } | |
034c6ed7 | 3633 | } else |
783e05d6 | 3634 | service_search_main_pid(s); |
034c6ed7 | 3635 | |
3a111838 | 3636 | service_enter_start_post(s); |
034c6ed7 LP |
3637 | break; |
3638 | ||
3639 | case SERVICE_START_POST: | |
f42806df | 3640 | if (f != SERVICE_SUCCESS) { |
ce359e98 | 3641 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
2096e009 | 3642 | break; |
034c6ed7 LP |
3643 | } |
3644 | ||
2096e009 | 3645 | if (s->pid_file) { |
f42806df LP |
3646 | int r; |
3647 | ||
3648 | r = service_load_pid_file(s, true); | |
2096e009 MS |
3649 | if (r < 0) { |
3650 | r = service_demand_pid_file(s); | |
b13ddbbc | 3651 | if (r < 0 || cgroup_good(s) == 0) |
c35755fb | 3652 | service_enter_stop(s, SERVICE_FAILURE_PROTOCOL); |
2096e009 MS |
3653 | break; |
3654 | } | |
3655 | } else | |
783e05d6 | 3656 | service_search_main_pid(s); |
2096e009 | 3657 | |
f42806df | 3658 | service_enter_running(s, SERVICE_SUCCESS); |
3185a36b | 3659 | break; |
034c6ed7 LP |
3660 | |
3661 | case SERVICE_RELOAD: | |
7236ce6e ZJS |
3662 | if (f == SERVICE_SUCCESS) |
3663 | if (service_load_pid_file(s, true) < 0) | |
3664 | service_search_main_pid(s); | |
3185a36b | 3665 | |
f42806df LP |
3666 | s->reload_result = f; |
3667 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
3668 | break; |
3669 | ||
3670 | case SERVICE_STOP: | |
f42806df | 3671 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
034c6ed7 LP |
3672 | break; |
3673 | ||
c87700a1 | 3674 | case SERVICE_STOP_WATCHDOG: |
034c6ed7 LP |
3675 | case SERVICE_STOP_SIGTERM: |
3676 | case SERVICE_STOP_SIGKILL: | |
3677 | if (main_pid_good(s) <= 0) | |
f42806df | 3678 | service_enter_stop_post(s, f); |
034c6ed7 | 3679 | |
846a07b5 | 3680 | /* If there is still a service process around, wait until |
034c6ed7 LP |
3681 | * that one quit, too */ |
3682 | break; | |
3683 | ||
3684 | case SERVICE_STOP_POST: | |
c1566ef0 AZ |
3685 | if (main_pid_good(s) <= 0) |
3686 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, f); | |
3687 | break; | |
3688 | ||
bf760801 | 3689 | case SERVICE_FINAL_WATCHDOG: |
034c6ed7 LP |
3690 | case SERVICE_FINAL_SIGTERM: |
3691 | case SERVICE_FINAL_SIGKILL: | |
bf108e55 LP |
3692 | if (main_pid_good(s) <= 0) |
3693 | service_enter_dead(s, f, true); | |
034c6ed7 LP |
3694 | break; |
3695 | ||
4c2f5842 LP |
3696 | case SERVICE_CLEANING: |
3697 | ||
3698 | if (s->clean_result == SERVICE_SUCCESS) | |
3699 | s->clean_result = f; | |
3700 | ||
3701 | service_enter_dead(s, SERVICE_SUCCESS, false); | |
3702 | break; | |
3703 | ||
034c6ed7 LP |
3704 | default: |
3705 | assert_not_reached("Uh, control process died at wrong time."); | |
3706 | } | |
3707 | } | |
5cdabc8d LP |
3708 | } else /* Neither control nor main PID? If so, don't notify about anything */ |
3709 | notify_dbus = false; | |
c4e2ceae LP |
3710 | |
3711 | /* Notify clients about changed exit status */ | |
5cdabc8d LP |
3712 | if (notify_dbus) |
3713 | unit_add_to_dbus_queue(u); | |
a911bb9a | 3714 | |
846a07b5 FB |
3715 | /* We watch the main/control process otherwise we can't retrieve the unit they |
3716 | * belong to with cgroupv1. But if they are not our direct child, we won't get a | |
3717 | * SIGCHLD for them. Therefore we need to look for others to watch so we can | |
3718 | * detect when the cgroup becomes empty. Note that the control process is always | |
3719 | * our child so it's pointless to watch all other processes. */ | |
3720 | if (!control_pid_good(s)) | |
3721 | if (!s->main_pid_known || s->main_pid_alien) | |
3722 | (void) unit_enqueue_rewatch_pids(u); | |
034c6ed7 LP |
3723 | } |
3724 | ||
718db961 LP |
3725 | static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
3726 | Service *s = SERVICE(userdata); | |
034c6ed7 LP |
3727 | |
3728 | assert(s); | |
718db961 | 3729 | assert(source == s->timer_event_source); |
034c6ed7 LP |
3730 | |
3731 | switch (s->state) { | |
3732 | ||
31cd5f63 | 3733 | case SERVICE_CONDITION: |
034c6ed7 LP |
3734 | case SERVICE_START_PRE: |
3735 | case SERVICE_START: | |
3736 | case SERVICE_START_POST: | |
bf760801 JK |
3737 | switch (s->timeout_start_failure_mode) { |
3738 | ||
3739 | case SERVICE_TIMEOUT_TERMINATE: | |
3740 | log_unit_warning(UNIT(s), "%s operation timed out. Terminating.", service_state_to_string(s->state)); | |
3741 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); | |
3742 | break; | |
3743 | ||
3744 | case SERVICE_TIMEOUT_ABORT: | |
3745 | log_unit_warning(UNIT(s), "%s operation timed out. Aborting.", service_state_to_string(s->state)); | |
3746 | service_enter_signal(s, SERVICE_STOP_WATCHDOG, SERVICE_FAILURE_TIMEOUT); | |
3747 | break; | |
3748 | ||
3749 | case SERVICE_TIMEOUT_KILL: | |
3750 | if (s->kill_context.send_sigkill) { | |
3751 | log_unit_warning(UNIT(s), "%s operation timed out. Killing.", service_state_to_string(s->state)); | |
3752 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); | |
3753 | } else { | |
3754 | log_unit_warning(UNIT(s), "%s operation timed out. Skipping SIGKILL.", service_state_to_string(s->state)); | |
3755 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); | |
3756 | } | |
3757 | break; | |
3758 | ||
3759 | default: | |
3760 | assert_not_reached("unknown timeout mode"); | |
3761 | } | |
034c6ed7 LP |
3762 | break; |
3763 | ||
36c16a7c LP |
3764 | case SERVICE_RUNNING: |
3765 | log_unit_warning(UNIT(s), "Service reached runtime time limit. Stopping."); | |
3766 | service_enter_stop(s, SERVICE_FAILURE_TIMEOUT); | |
3767 | break; | |
3768 | ||
e2f3b44c | 3769 | case SERVICE_RELOAD: |
089b64d5 | 3770 | log_unit_warning(UNIT(s), "Reload operation timed out. Killing reload process."); |
e9a4f676 | 3771 | service_kill_control_process(s); |
f42806df LP |
3772 | s->reload_result = SERVICE_FAILURE_TIMEOUT; |
3773 | service_enter_running(s, SERVICE_SUCCESS); | |
e2f3b44c LP |
3774 | break; |
3775 | ||
034c6ed7 | 3776 | case SERVICE_STOP: |
bf760801 JK |
3777 | switch (s->timeout_stop_failure_mode) { |
3778 | ||
3779 | case SERVICE_TIMEOUT_TERMINATE: | |
3780 | log_unit_warning(UNIT(s), "Stopping timed out. Terminating."); | |
3781 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); | |
3782 | break; | |
3783 | ||
3784 | case SERVICE_TIMEOUT_ABORT: | |
3785 | log_unit_warning(UNIT(s), "Stopping timed out. Aborting."); | |
3786 | service_enter_signal(s, SERVICE_STOP_WATCHDOG, SERVICE_FAILURE_TIMEOUT); | |
3787 | break; | |
3788 | ||
3789 | case SERVICE_TIMEOUT_KILL: | |
3790 | if (s->kill_context.send_sigkill) { | |
3791 | log_unit_warning(UNIT(s), "Stopping timed out. Killing."); | |
3792 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); | |
3793 | } else { | |
3794 | log_unit_warning(UNIT(s), "Stopping timed out. Skipping SIGKILL."); | |
3795 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); | |
3796 | } | |
3797 | break; | |
3798 | ||
3799 | default: | |
3800 | assert_not_reached("unknown timeout mode"); | |
3801 | } | |
034c6ed7 LP |
3802 | break; |
3803 | ||
c87700a1 | 3804 | case SERVICE_STOP_WATCHDOG: |
bf760801 JK |
3805 | if (s->kill_context.send_sigkill) { |
3806 | log_unit_warning(UNIT(s), "State 'stop-watchdog' timed out. Killing."); | |
3807 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); | |
3808 | } else { | |
3809 | log_unit_warning(UNIT(s), "State 'stop-watchdog' timed out. Skipping SIGKILL."); | |
3810 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); | |
3811 | } | |
db2cb23b UTL |
3812 | break; |
3813 | ||
034c6ed7 | 3814 | case SERVICE_STOP_SIGTERM: |
bf760801 JK |
3815 | if (s->timeout_stop_failure_mode == SERVICE_TIMEOUT_ABORT) { |
3816 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Aborting."); | |
3817 | service_enter_signal(s, SERVICE_STOP_WATCHDOG, SERVICE_FAILURE_TIMEOUT); | |
3818 | } else if (s->kill_context.send_sigkill) { | |
f2341e0a | 3819 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Killing."); |
f42806df | 3820 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 3821 | } else { |
f2341e0a | 3822 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Skipping SIGKILL."); |
f42806df | 3823 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
ba035df2 LP |
3824 | } |
3825 | ||
034c6ed7 LP |
3826 | break; |
3827 | ||
3828 | case SERVICE_STOP_SIGKILL: | |
35b8ca3a | 3829 | /* Uh, we sent a SIGKILL and it is still not gone? |
034c6ed7 LP |
3830 | * Must be something we cannot kill, so let's just be |
3831 | * weirded out and continue */ | |
3832 | ||
f2341e0a | 3833 | log_unit_warning(UNIT(s), "Processes still around after SIGKILL. Ignoring."); |
f42806df | 3834 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3835 | break; |
3836 | ||
3837 | case SERVICE_STOP_POST: | |
bf760801 JK |
3838 | switch (s->timeout_stop_failure_mode) { |
3839 | ||
3840 | case SERVICE_TIMEOUT_TERMINATE: | |
3841 | log_unit_warning(UNIT(s), "State 'stop-post' timed out. Terminating."); | |
3842 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT); | |
3843 | break; | |
3844 | ||
3845 | case SERVICE_TIMEOUT_ABORT: | |
3846 | log_unit_warning(UNIT(s), "State 'stop-post' timed out. Aborting."); | |
3847 | service_enter_signal(s, SERVICE_FINAL_WATCHDOG, SERVICE_FAILURE_TIMEOUT); | |
3848 | break; | |
3849 | ||
3850 | case SERVICE_TIMEOUT_KILL: | |
3851 | if (s->kill_context.send_sigkill) { | |
3852 | log_unit_warning(UNIT(s), "State 'stop-post' timed out. Killing."); | |
3853 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT); | |
3854 | } else { | |
3855 | log_unit_warning(UNIT(s), "State 'stop-post' timed out. Skipping SIGKILL. Entering failed mode."); | |
3856 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false); | |
3857 | } | |
3858 | break; | |
3859 | ||
3860 | default: | |
3861 | assert_not_reached("unknown timeout mode"); | |
3862 | } | |
034c6ed7 LP |
3863 | break; |
3864 | ||
bf760801 | 3865 | case SERVICE_FINAL_WATCHDOG: |
4819ff03 | 3866 | if (s->kill_context.send_sigkill) { |
bf760801 | 3867 | log_unit_warning(UNIT(s), "State 'final-watchdog' timed out. Killing."); |
f42806df | 3868 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 3869 | } else { |
bf760801 JK |
3870 | log_unit_warning(UNIT(s), "State 'final-watchdog' timed out. Skipping SIGKILL. Entering failed mode."); |
3871 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false); | |
3872 | } | |
3873 | break; | |
3874 | ||
3875 | case SERVICE_FINAL_SIGTERM: | |
3876 | if (s->timeout_stop_failure_mode == SERVICE_TIMEOUT_ABORT) { | |
3877 | log_unit_warning(UNIT(s), "State 'final-sigterm' timed out. Aborting."); | |
3878 | service_enter_signal(s, SERVICE_FINAL_WATCHDOG, SERVICE_FAILURE_TIMEOUT); | |
3879 | } else if (s->kill_context.send_sigkill) { | |
3880 | log_unit_warning(UNIT(s), "State 'final-sigterm' timed out. Killing."); | |
3881 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT); | |
3882 | } else { | |
3883 | log_unit_warning(UNIT(s), "State 'final-sigterm' timed out. Skipping SIGKILL. Entering failed mode."); | |
f42806df | 3884 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false); |
ba035df2 LP |
3885 | } |
3886 | ||
034c6ed7 LP |
3887 | break; |
3888 | ||
3889 | case SERVICE_FINAL_SIGKILL: | |
f2341e0a | 3890 | log_unit_warning(UNIT(s), "Processes still around after final SIGKILL. Entering failed mode."); |
f42806df | 3891 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true); |
034c6ed7 LP |
3892 | break; |
3893 | ||
3894 | case SERVICE_AUTO_RESTART: | |
5ce6e7f5 ZJS |
3895 | if (s->restart_usec > 0) { |
3896 | char buf_restart[FORMAT_TIMESPAN_MAX]; | |
868f7d36 ZJS |
3897 | log_unit_debug(UNIT(s), |
3898 | "Service RestartSec=%s expired, scheduling restart.", | |
3899 | format_timespan(buf_restart, sizeof buf_restart, s->restart_usec, USEC_PER_SEC)); | |
5ce6e7f5 | 3900 | } else |
868f7d36 ZJS |
3901 | log_unit_debug(UNIT(s), |
3902 | "Service has no hold-off time (RestartSec=0), scheduling restart."); | |
5ce6e7f5 | 3903 | |
034c6ed7 LP |
3904 | service_enter_restart(s); |
3905 | break; | |
3906 | ||
4c2f5842 LP |
3907 | case SERVICE_CLEANING: |
3908 | log_unit_warning(UNIT(s), "Cleaning timed out. killing."); | |
3909 | ||
3910 | if (s->clean_result == SERVICE_SUCCESS) | |
3911 | s->clean_result = SERVICE_FAILURE_TIMEOUT; | |
3912 | ||
3913 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, 0); | |
3914 | break; | |
3915 | ||
034c6ed7 LP |
3916 | default: |
3917 | assert_not_reached("Timeout at wrong time."); | |
3918 | } | |
718db961 LP |
3919 | |
3920 | return 0; | |
3921 | } | |
3922 | ||
3923 | static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata) { | |
3924 | Service *s = SERVICE(userdata); | |
a7850c7d | 3925 | char t[FORMAT_TIMESPAN_MAX]; |
2787d83c | 3926 | usec_t watchdog_usec; |
718db961 LP |
3927 | |
3928 | assert(s); | |
3929 | assert(source == s->watchdog_event_source); | |
3930 | ||
2787d83c M |
3931 | watchdog_usec = service_get_watchdog_usec(s); |
3932 | ||
2a12e32e JK |
3933 | if (UNIT(s)->manager->service_watchdogs) { |
3934 | log_unit_error(UNIT(s), "Watchdog timeout (limit %s)!", | |
3935 | format_timespan(t, sizeof(t), watchdog_usec, 1)); | |
8bb2d17d | 3936 | |
c87700a1 | 3937 | service_enter_signal(s, SERVICE_STOP_WATCHDOG, SERVICE_FAILURE_WATCHDOG); |
2a12e32e JK |
3938 | } else |
3939 | log_unit_warning(UNIT(s), "Watchdog disabled! Ignoring watchdog timeout (limit %s)!", | |
3940 | format_timespan(t, sizeof(t), watchdog_usec, 1)); | |
842129f5 | 3941 | |
718db961 | 3942 | return 0; |
5cb5a6ff LP |
3943 | } |
3944 | ||
fcee2755 | 3945 | static bool service_notify_message_authorized(Service *s, pid_t pid, FDSet *fds) { |
e3285237 | 3946 | assert(s); |
8c47c732 | 3947 | |
c952c6ec | 3948 | if (s->notify_access == NOTIFY_NONE) { |
e3285237 LP |
3949 | log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception is disabled.", pid); |
3950 | return false; | |
3951 | } | |
3952 | ||
3953 | if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) { | |
336c6e46 | 3954 | if (s->main_pid != 0) |
e3285237 | 3955 | 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 | 3956 | else |
e3285237 LP |
3957 | 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); |
3958 | ||
3959 | return false; | |
3960 | } | |
3961 | ||
3962 | if (s->notify_access == NOTIFY_EXEC && pid != s->main_pid && pid != s->control_pid) { | |
6375bd20 | 3963 | if (s->main_pid != 0 && s->control_pid != 0) |
e3285237 | 3964 | 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 |
3965 | pid, s->main_pid, s->control_pid); |
3966 | else if (s->main_pid != 0) | |
e3285237 | 3967 | 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 | 3968 | else if (s->control_pid != 0) |
e3285237 | 3969 | 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 | 3970 | else |
e3285237 LP |
3971 | 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); |
3972 | ||
3973 | return false; | |
9711848f LP |
3974 | } |
3975 | ||
e3285237 LP |
3976 | return true; |
3977 | } | |
3978 | ||
99b43caf JK |
3979 | static void service_force_watchdog(Service *s) { |
3980 | if (!UNIT(s)->manager->service_watchdogs) | |
3981 | return; | |
3982 | ||
3983 | log_unit_error(UNIT(s), "Watchdog request (last status: %s)!", | |
3984 | s->status_text ? s->status_text : "<unset>"); | |
3985 | ||
3986 | service_enter_signal(s, SERVICE_STOP_WATCHDOG, SERVICE_FAILURE_WATCHDOG); | |
3987 | } | |
3988 | ||
db256aab LP |
3989 | static void service_notify_message( |
3990 | Unit *u, | |
3991 | const struct ucred *ucred, | |
fcee2755 | 3992 | char * const *tags, |
db256aab LP |
3993 | FDSet *fds) { |
3994 | ||
e3285237 LP |
3995 | Service *s = SERVICE(u); |
3996 | bool notify_dbus = false; | |
3997 | const char *e; | |
fcee2755 | 3998 | char * const *i; |
db256aab | 3999 | int r; |
e3285237 LP |
4000 | |
4001 | assert(u); | |
db256aab | 4002 | assert(ucred); |
e3285237 | 4003 | |
fcee2755 | 4004 | if (!service_notify_message_authorized(SERVICE(u), ucred->pid, fds)) |
e3285237 LP |
4005 | return; |
4006 | ||
f1d34068 | 4007 | if (DEBUG_LOGGING) { |
9711848f LP |
4008 | _cleanup_free_ char *cc = NULL; |
4009 | ||
4010 | cc = strv_join(tags, ", "); | |
db256aab | 4011 | log_unit_debug(u, "Got notification message from PID "PID_FMT" (%s)", ucred->pid, isempty(cc) ? "n/a" : cc); |
9711848f | 4012 | } |
c952c6ec | 4013 | |
8c47c732 | 4014 | /* Interpret MAINPID= */ |
28849dba | 4015 | e = strv_find_startswith(tags, "MAINPID="); |
5e56b378 | 4016 | if (e && IN_SET(s->state, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) { |
db256aab LP |
4017 | pid_t new_main_pid; |
4018 | ||
4019 | if (parse_pid(e, &new_main_pid) < 0) | |
4020 | log_unit_warning(u, "Failed to parse MAINPID= field in notification message, ignoring: %s", e); | |
4021 | else if (!s->main_pid_known || new_main_pid != s->main_pid) { | |
4022 | ||
4023 | r = service_is_suitable_main_pid(s, new_main_pid, LOG_WARNING); | |
4024 | if (r == 0) { | |
5238e957 | 4025 | /* The new main PID is a bit suspicious, which is OK if the sender is privileged. */ |
db256aab LP |
4026 | |
4027 | if (ucred->uid == 0) { | |
4028 | 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); | |
4029 | r = 1; | |
4030 | } else | |
4031 | log_unit_debug(u, "New main PID "PID_FMT" does not belong to service, refusing.", new_main_pid); | |
4032 | } | |
4033 | if (r > 0) { | |
4034 | service_set_main_pid(s, new_main_pid); | |
cdc2af3e | 4035 | |
f75f613d | 4036 | r = unit_watch_pid(UNIT(s), new_main_pid, false); |
cdc2af3e LP |
4037 | if (r < 0) |
4038 | log_unit_warning_errno(UNIT(s), r, "Failed to watch new main PID "PID_FMT" for service: %m", new_main_pid); | |
4039 | ||
db256aab LP |
4040 | notify_dbus = true; |
4041 | } | |
8c47c732 LP |
4042 | } |
4043 | } | |
4044 | ||
cc2b7b11 LP |
4045 | /* Interpret READY=/STOPPING=/RELOADING=. Last one wins. */ |
4046 | STRV_FOREACH_BACKWARDS(i, tags) { | |
308d72dc | 4047 | |
cc2b7b11 LP |
4048 | if (streq(*i, "READY=1")) { |
4049 | s->notify_state = NOTIFY_READY; | |
308d72dc | 4050 | |
cc2b7b11 LP |
4051 | /* Type=notify services inform us about completed |
4052 | * initialization with READY=1 */ | |
4053 | if (s->type == SERVICE_NOTIFY && s->state == SERVICE_START) | |
4054 | service_enter_start_post(s); | |
308d72dc | 4055 | |
cc2b7b11 LP |
4056 | /* Sending READY=1 while we are reloading informs us |
4057 | * that the reloading is complete */ | |
4058 | if (s->state == SERVICE_RELOAD && s->control_pid == 0) | |
4059 | service_enter_running(s, SERVICE_SUCCESS); | |
308d72dc | 4060 | |
cc2b7b11 LP |
4061 | notify_dbus = true; |
4062 | break; | |
308d72dc | 4063 | |
cc2b7b11 LP |
4064 | } else if (streq(*i, "RELOADING=1")) { |
4065 | s->notify_state = NOTIFY_RELOADING; | |
308d72dc | 4066 | |
cc2b7b11 LP |
4067 | if (s->state == SERVICE_RUNNING) |
4068 | service_enter_reload_by_notify(s); | |
308d72dc | 4069 | |
cc2b7b11 LP |
4070 | notify_dbus = true; |
4071 | break; | |
308d72dc | 4072 | |
cc2b7b11 LP |
4073 | } else if (streq(*i, "STOPPING=1")) { |
4074 | s->notify_state = NOTIFY_STOPPING; | |
308d72dc | 4075 | |
cc2b7b11 LP |
4076 | if (s->state == SERVICE_RUNNING) |
4077 | service_enter_stop_by_notify(s); | |
308d72dc | 4078 | |
cc2b7b11 LP |
4079 | notify_dbus = true; |
4080 | break; | |
4081 | } | |
8c47c732 LP |
4082 | } |
4083 | ||
4084 | /* Interpret STATUS= */ | |
28849dba | 4085 | e = strv_find_startswith(tags, "STATUS="); |
7f110ff9 | 4086 | if (e) { |
28849dba | 4087 | _cleanup_free_ char *t = NULL; |
8c47c732 | 4088 | |
28849dba | 4089 | if (!isempty(e)) { |
3eac1bca LP |
4090 | /* Note that this size limit check is mostly paranoia: since the datagram size we are willing |
4091 | * to process is already limited to NOTIFY_BUFFER_MAX, this limit here should never be hit. */ | |
4092 | if (strlen(e) > STATUS_TEXT_MAX) | |
4093 | log_unit_warning(u, "Status message overly long (%zu > %u), ignoring.", strlen(e), STATUS_TEXT_MAX); | |
4094 | else if (!utf8_is_valid(e)) | |
4095 | log_unit_warning(u, "Status message in notification message is not UTF-8 clean, ignoring."); | |
28849dba | 4096 | else { |
28849dba LP |
4097 | t = strdup(e); |
4098 | if (!t) | |
4099 | log_oom(); | |
3a2776bc | 4100 | } |
28849dba | 4101 | } |
8c47c732 | 4102 | |
30b5275a | 4103 | if (!streq_ptr(s->status_text, t)) { |
3b319885 | 4104 | free_and_replace(s->status_text, t); |
30b5275a | 4105 | notify_dbus = true; |
28849dba | 4106 | } |
8c47c732 | 4107 | } |
842129f5 | 4108 | |
4774e357 | 4109 | /* Interpret ERRNO= */ |
28849dba | 4110 | e = strv_find_startswith(tags, "ERRNO="); |
4774e357 MAA |
4111 | if (e) { |
4112 | int status_errno; | |
4113 | ||
2fa40742 LP |
4114 | status_errno = parse_errno(e); |
4115 | if (status_errno < 0) | |
4116 | log_unit_warning_errno(u, status_errno, | |
5e1ee764 | 4117 | "Failed to parse ERRNO= field value '%s' in notification message: %m", e); |
2fa40742 LP |
4118 | else if (s->status_errno != status_errno) { |
4119 | s->status_errno = status_errno; | |
4120 | notify_dbus = true; | |
4774e357 MAA |
4121 | } |
4122 | } | |
4123 | ||
a327431b DB |
4124 | /* Interpret EXTEND_TIMEOUT= */ |
4125 | e = strv_find_startswith(tags, "EXTEND_TIMEOUT_USEC="); | |
4126 | if (e) { | |
4127 | usec_t extend_timeout_usec; | |
4128 | if (safe_atou64(e, &extend_timeout_usec) < 0) | |
4129 | log_unit_warning(u, "Failed to parse EXTEND_TIMEOUT_USEC=%s", e); | |
4130 | else | |
4131 | service_extend_timeout(s, extend_timeout_usec); | |
4132 | } | |
4133 | ||
6f285378 | 4134 | /* Interpret WATCHDOG= */ |
99b43caf JK |
4135 | e = strv_find_startswith(tags, "WATCHDOG="); |
4136 | if (e) { | |
4137 | if (streq(e, "1")) | |
4138 | service_reset_watchdog(s); | |
4139 | else if (streq(e, "trigger")) | |
4140 | service_force_watchdog(s); | |
4141 | else | |
4142 | log_unit_warning(u, "Passed WATCHDOG= field is invalid, ignoring."); | |
4143 | } | |
c4e2ceae | 4144 | |
c45d11cb LP |
4145 | e = strv_find_startswith(tags, "WATCHDOG_USEC="); |
4146 | if (e) { | |
4147 | usec_t watchdog_override_usec; | |
4148 | if (safe_atou64(e, &watchdog_override_usec) < 0) | |
4149 | log_unit_warning(u, "Failed to parse WATCHDOG_USEC=%s", e); | |
4150 | else | |
95d0d8ed | 4151 | service_override_watchdog_timeout(s, watchdog_override_usec); |
c45d11cb LP |
4152 | } |
4153 | ||
e78ee06d LP |
4154 | /* Process FD store messages. Either FDSTOREREMOVE=1 for removal, or FDSTORE=1 for addition. In both cases, |
4155 | * process FDNAME= for picking the file descriptor name to use. Note that FDNAME= is required when removing | |
4156 | * fds, but optional when pushing in new fds, for compatibility reasons. */ | |
4157 | if (strv_find(tags, "FDSTOREREMOVE=1")) { | |
4158 | const char *name; | |
4159 | ||
4160 | name = strv_find_startswith(tags, "FDNAME="); | |
4161 | if (!name || !fdname_is_valid(name)) | |
4162 | log_unit_warning(u, "FDSTOREREMOVE=1 requested, but no valid file descriptor name passed, ignoring."); | |
4163 | else | |
4164 | service_remove_fd_store(s, name); | |
4165 | ||
4166 | } else if (strv_find(tags, "FDSTORE=1")) { | |
8dd4c05b LP |
4167 | const char *name; |
4168 | ||
4169 | name = strv_find_startswith(tags, "FDNAME="); | |
4170 | if (name && !fdname_is_valid(name)) { | |
4171 | log_unit_warning(u, "Passed FDNAME= name is invalid, ignoring."); | |
4172 | name = NULL; | |
4173 | } | |
4174 | ||
cb5a46b8 | 4175 | (void) service_add_fd_store_set(s, fds, name, !strv_contains(tags, "FDPOLL=0")); |
8dd4c05b | 4176 | } |
a354329f | 4177 | |
c4e2ceae | 4178 | /* Notify clients about changed status or main pid */ |
30b5275a LP |
4179 | if (notify_dbus) |
4180 | unit_add_to_dbus_queue(u); | |
8c47c732 LP |
4181 | } |
4182 | ||
7a7821c8 | 4183 | static int service_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 4184 | Service *s = SERVICE(u); |
7a7821c8 | 4185 | uint64_t t; |
68db7a3b ZJS |
4186 | int r; |
4187 | ||
4188 | if (!s->timer_event_source) | |
4189 | return 0; | |
4190 | ||
7a7821c8 | 4191 | r = sd_event_source_get_time(s->timer_event_source, &t); |
68db7a3b ZJS |
4192 | if (r < 0) |
4193 | return r; | |
7a7821c8 LP |
4194 | if (t == USEC_INFINITY) |
4195 | return 0; | |
68db7a3b | 4196 | |
7a7821c8 | 4197 | *timeout = t; |
68db7a3b ZJS |
4198 | return 1; |
4199 | } | |
4200 | ||
fc67a943 | 4201 | static void service_bus_name_owner_change(Unit *u, const char *new_owner) { |
05e343b7 LP |
4202 | |
4203 | Service *s = SERVICE(u); | |
718db961 | 4204 | int r; |
05e343b7 LP |
4205 | |
4206 | assert(s); | |
05e343b7 | 4207 | |
fc67a943 LP |
4208 | if (new_owner) |
4209 | log_unit_debug(u, "D-Bus name %s now owned by %s", s->bus_name, new_owner); | |
05e343b7 | 4210 | else |
fc67a943 | 4211 | log_unit_debug(u, "D-Bus name %s now not owned by anyone.", s->bus_name); |
05e343b7 | 4212 | |
d7a0f1f4 | 4213 | s->bus_name_good = new_owner; |
05e343b7 | 4214 | |
d8ccf5fd DM |
4215 | /* Track the current owner, so we can reconstruct changes after a daemon reload */ |
4216 | r = free_and_strdup(&s->bus_name_owner, new_owner); | |
4217 | if (r < 0) { | |
4218 | log_unit_error_errno(u, r, "Unable to set new bus name owner %s: %m", new_owner); | |
4219 | return; | |
4220 | } | |
4221 | ||
05e343b7 LP |
4222 | if (s->type == SERVICE_DBUS) { |
4223 | ||
4224 | /* service_enter_running() will figure out what to | |
4225 | * do */ | |
4226 | if (s->state == SERVICE_RUNNING) | |
f42806df | 4227 | service_enter_running(s, SERVICE_SUCCESS); |
05e343b7 LP |
4228 | else if (s->state == SERVICE_START && new_owner) |
4229 | service_enter_start_post(s); | |
4230 | ||
4231 | } else if (new_owner && | |
4232 | s->main_pid <= 0 && | |
a6951a50 LP |
4233 | IN_SET(s->state, |
4234 | SERVICE_START, | |
4235 | SERVICE_START_POST, | |
4236 | SERVICE_RUNNING, | |
4237 | SERVICE_RELOAD)) { | |
05e343b7 | 4238 | |
4afd3348 | 4239 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; |
718db961 | 4240 | pid_t pid; |
05e343b7 | 4241 | |
718db961 | 4242 | /* Try to acquire PID from bus service */ |
05e343b7 | 4243 | |
a5a8776a | 4244 | r = sd_bus_get_name_creds(u->manager->api_bus, s->bus_name, SD_BUS_CREDS_PID, &creds); |
5b12334d LP |
4245 | if (r >= 0) |
4246 | r = sd_bus_creds_get_pid(creds, &pid); | |
718db961 | 4247 | if (r >= 0) { |
a5a8776a | 4248 | log_unit_debug(u, "D-Bus name %s is now owned by process " PID_FMT, s->bus_name, pid); |
05e343b7 | 4249 | |
718db961 | 4250 | service_set_main_pid(s, pid); |
f75f613d | 4251 | unit_watch_pid(UNIT(s), pid, false); |
718db961 | 4252 | } |
7400b9d2 | 4253 | } |
05e343b7 LP |
4254 | } |
4255 | ||
16115b0a | 4256 | int service_set_socket_fd(Service *s, int fd, Socket *sock, bool selinux_context_net) { |
79a98c60 LP |
4257 | _cleanup_free_ char *peer = NULL; |
4258 | int r; | |
57020a3a | 4259 | |
4f2d528d LP |
4260 | assert(s); |
4261 | assert(fd >= 0); | |
4262 | ||
7f2fbbff LP |
4263 | /* This is called by the socket code when instantiating a new service for a stream socket and the socket needs |
4264 | * to be configured. We take ownership of the passed fd on success. */ | |
4f2d528d | 4265 | |
1124fe6f | 4266 | if (UNIT(s)->load_state != UNIT_LOADED) |
4f2d528d LP |
4267 | return -EINVAL; |
4268 | ||
4269 | if (s->socket_fd >= 0) | |
4270 | return -EBUSY; | |
4271 | ||
4272 | if (s->state != SERVICE_DEAD) | |
4273 | return -EAGAIN; | |
4274 | ||
366b7db4 | 4275 | if (getpeername_pretty(fd, true, &peer) >= 0) { |
79a98c60 LP |
4276 | |
4277 | if (UNIT(s)->description) { | |
c2b2df60 | 4278 | _cleanup_free_ char *a = NULL; |
79a98c60 | 4279 | |
605405c6 | 4280 | a = strjoin(UNIT(s)->description, " (", peer, ")"); |
79a98c60 LP |
4281 | if (!a) |
4282 | return -ENOMEM; | |
4283 | ||
4284 | r = unit_set_description(UNIT(s), a); | |
4285 | } else | |
4286 | r = unit_set_description(UNIT(s), peer); | |
4287 | ||
4288 | if (r < 0) | |
4289 | return r; | |
4290 | } | |
4291 | ||
eef85c4a | 4292 | r = unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false, UNIT_DEPENDENCY_IMPLICIT); |
7f2fbbff LP |
4293 | if (r < 0) |
4294 | return r; | |
4295 | ||
4f2d528d | 4296 | s->socket_fd = fd; |
16115b0a | 4297 | s->socket_fd_selinux_context_net = selinux_context_net; |
6cf6bbc2 | 4298 | |
7f7d01ed | 4299 | unit_ref_set(&s->accept_socket, UNIT(s), UNIT(sock)); |
7f2fbbff | 4300 | return 0; |
4f2d528d LP |
4301 | } |
4302 | ||
fdf20a31 | 4303 | static void service_reset_failed(Unit *u) { |
5632e374 LP |
4304 | Service *s = SERVICE(u); |
4305 | ||
4306 | assert(s); | |
4307 | ||
fdf20a31 | 4308 | if (s->state == SERVICE_FAILED) |
5632e374 LP |
4309 | service_set_state(s, SERVICE_DEAD); |
4310 | ||
f42806df LP |
4311 | s->result = SERVICE_SUCCESS; |
4312 | s->reload_result = SERVICE_SUCCESS; | |
4c2f5842 | 4313 | s->clean_result = SERVICE_SUCCESS; |
7a0019d3 LP |
4314 | s->n_restarts = 0; |
4315 | s->flush_n_restarts = false; | |
5632e374 LP |
4316 | } |
4317 | ||
718db961 | 4318 | static int service_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
8a0867d6 | 4319 | Service *s = SERVICE(u); |
41efeaec | 4320 | |
a6951a50 LP |
4321 | assert(s); |
4322 | ||
814cc562 | 4323 | return unit_kill_common(u, who, signo, s->main_pid, s->control_pid, error); |
8a0867d6 LP |
4324 | } |
4325 | ||
291d565a LP |
4326 | static int service_main_pid(Unit *u) { |
4327 | Service *s = SERVICE(u); | |
4328 | ||
4329 | assert(s); | |
4330 | ||
4331 | return s->main_pid; | |
4332 | } | |
4333 | ||
4334 | static int service_control_pid(Unit *u) { | |
4335 | Service *s = SERVICE(u); | |
4336 | ||
4337 | assert(s); | |
4338 | ||
4339 | return s->control_pid; | |
4340 | } | |
4341 | ||
bb2c7685 LP |
4342 | static bool service_needs_console(Unit *u) { |
4343 | Service *s = SERVICE(u); | |
4344 | ||
4345 | assert(s); | |
4346 | ||
4347 | /* We provide our own implementation of this here, instead of relying of the generic implementation | |
4348 | * unit_needs_console() provides, since we want to return false if we are in SERVICE_EXITED state. */ | |
4349 | ||
4350 | if (!exec_context_may_touch_console(&s->exec_context)) | |
4351 | return false; | |
4352 | ||
4353 | return IN_SET(s->state, | |
31cd5f63 | 4354 | SERVICE_CONDITION, |
bb2c7685 LP |
4355 | SERVICE_START_PRE, |
4356 | SERVICE_START, | |
4357 | SERVICE_START_POST, | |
4358 | SERVICE_RUNNING, | |
4359 | SERVICE_RELOAD, | |
4360 | SERVICE_STOP, | |
c87700a1 | 4361 | SERVICE_STOP_WATCHDOG, |
bb2c7685 LP |
4362 | SERVICE_STOP_SIGTERM, |
4363 | SERVICE_STOP_SIGKILL, | |
4364 | SERVICE_STOP_POST, | |
bf760801 | 4365 | SERVICE_FINAL_WATCHDOG, |
bb2c7685 LP |
4366 | SERVICE_FINAL_SIGTERM, |
4367 | SERVICE_FINAL_SIGKILL); | |
4368 | } | |
4369 | ||
7af67e9a LP |
4370 | static int service_exit_status(Unit *u) { |
4371 | Service *s = SERVICE(u); | |
4372 | ||
4373 | assert(u); | |
4374 | ||
4375 | if (s->main_exec_status.pid <= 0 || | |
4376 | !dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) | |
4377 | return -ENODATA; | |
4378 | ||
4379 | if (s->main_exec_status.code != CLD_EXITED) | |
4380 | return -EBADE; | |
4381 | ||
4382 | return s->main_exec_status.status; | |
4383 | } | |
4384 | ||
4c2f5842 LP |
4385 | static int service_clean(Unit *u, ExecCleanMask mask) { |
4386 | _cleanup_strv_free_ char **l = NULL; | |
4387 | Service *s = SERVICE(u); | |
4c2f5842 LP |
4388 | int r; |
4389 | ||
4390 | assert(s); | |
4391 | assert(mask != 0); | |
4392 | ||
4393 | if (s->state != SERVICE_DEAD) | |
4394 | return -EBUSY; | |
4395 | ||
4396 | r = exec_context_get_clean_directories(&s->exec_context, u->manager->prefix, mask, &l); | |
4397 | if (r < 0) | |
4398 | return r; | |
4399 | ||
4400 | if (strv_isempty(l)) | |
4401 | return -EUNATCH; | |
4402 | ||
4403 | service_unwatch_control_pid(s); | |
4404 | s->clean_result = SERVICE_SUCCESS; | |
4405 | s->control_command = NULL; | |
4406 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
4407 | ||
12213aed | 4408 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->exec_context.timeout_clean_usec)); |
4c2f5842 LP |
4409 | if (r < 0) |
4410 | goto fail; | |
4411 | ||
810ef318 | 4412 | r = unit_fork_and_watch_rm_rf(u, l, &s->control_pid); |
4c2f5842 LP |
4413 | if (r < 0) |
4414 | goto fail; | |
4415 | ||
4c2f5842 LP |
4416 | service_set_state(s, SERVICE_CLEANING); |
4417 | ||
4418 | return 0; | |
4419 | ||
4420 | fail: | |
810ef318 | 4421 | log_unit_warning_errno(u, r, "Failed to initiate cleaning: %m"); |
4c2f5842 LP |
4422 | s->clean_result = SERVICE_FAILURE_RESOURCES; |
4423 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); | |
4424 | return r; | |
4425 | } | |
4426 | ||
4427 | static int service_can_clean(Unit *u, ExecCleanMask *ret) { | |
4428 | Service *s = SERVICE(u); | |
4429 | ||
4430 | assert(s); | |
4431 | ||
4432 | return exec_context_get_clean_mask(&s->exec_context, ret); | |
4433 | } | |
4434 | ||
eda0cbf0 ZJS |
4435 | static const char *service_finished_job(Unit *u, JobType t, JobResult result) { |
4436 | if (t == JOB_START && result == JOB_DONE) { | |
4437 | Service *s = SERVICE(u); | |
4438 | ||
4439 | if (s->type == SERVICE_ONESHOT) | |
4440 | return "Finished %s."; | |
4441 | } | |
4442 | ||
4443 | /* Fall back to generic */ | |
4444 | return NULL; | |
4445 | } | |
4446 | ||
94f04347 | 4447 | static const char* const service_restart_table[_SERVICE_RESTART_MAX] = { |
525ee6f4 LP |
4448 | [SERVICE_RESTART_NO] = "no", |
4449 | [SERVICE_RESTART_ON_SUCCESS] = "on-success", | |
50caaedb | 4450 | [SERVICE_RESTART_ON_FAILURE] = "on-failure", |
6cfe2fde | 4451 | [SERVICE_RESTART_ON_ABNORMAL] = "on-abnormal", |
dc99a976 | 4452 | [SERVICE_RESTART_ON_WATCHDOG] = "on-watchdog", |
50caaedb | 4453 | [SERVICE_RESTART_ON_ABORT] = "on-abort", |
6cfe2fde | 4454 | [SERVICE_RESTART_ALWAYS] = "always", |
94f04347 LP |
4455 | }; |
4456 | ||
4457 | DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart); | |
4458 | ||
4459 | static const char* const service_type_table[_SERVICE_TYPE_MAX] = { | |
94f04347 | 4460 | [SERVICE_SIMPLE] = "simple", |
0d624a78 | 4461 | [SERVICE_FORKING] = "forking", |
34e9ba66 | 4462 | [SERVICE_ONESHOT] = "oneshot", |
8c47c732 | 4463 | [SERVICE_DBUS] = "dbus", |
f2b68789 | 4464 | [SERVICE_NOTIFY] = "notify", |
5686391b LP |
4465 | [SERVICE_IDLE] = "idle", |
4466 | [SERVICE_EXEC] = "exec", | |
94f04347 LP |
4467 | }; |
4468 | ||
4469 | DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType); | |
4470 | ||
cb0e818f HC |
4471 | static const char* const service_exit_type_table[_SERVICE_EXIT_TYPE_MAX] = { |
4472 | [SERVICE_EXIT_MAIN] = "main", | |
4473 | [SERVICE_EXIT_CGROUP] = "cgroup", | |
4474 | }; | |
4475 | ||
4476 | DEFINE_STRING_TABLE_LOOKUP(service_exit_type, ServiceExitType); | |
4477 | ||
e537352b | 4478 | static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = { |
31cd5f63 | 4479 | [SERVICE_EXEC_CONDITION] = "ExecCondition", |
94f04347 LP |
4480 | [SERVICE_EXEC_START_PRE] = "ExecStartPre", |
4481 | [SERVICE_EXEC_START] = "ExecStart", | |
4482 | [SERVICE_EXEC_START_POST] = "ExecStartPost", | |
4483 | [SERVICE_EXEC_RELOAD] = "ExecReload", | |
4484 | [SERVICE_EXEC_STOP] = "ExecStop", | |
4485 | [SERVICE_EXEC_STOP_POST] = "ExecStopPost", | |
4486 | }; | |
4487 | ||
4488 | DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand); | |
4489 | ||
b3d59367 | 4490 | static const char* const service_exec_ex_command_table[_SERVICE_EXEC_COMMAND_MAX] = { |
898fc00e | 4491 | [SERVICE_EXEC_CONDITION] = "ExecConditionEx", |
b3d59367 AZ |
4492 | [SERVICE_EXEC_START_PRE] = "ExecStartPreEx", |
4493 | [SERVICE_EXEC_START] = "ExecStartEx", | |
4494 | [SERVICE_EXEC_START_POST] = "ExecStartPostEx", | |
898fc00e AZ |
4495 | [SERVICE_EXEC_RELOAD] = "ExecReloadEx", |
4496 | [SERVICE_EXEC_STOP] = "ExecStopEx", | |
4497 | [SERVICE_EXEC_STOP_POST] = "ExecStopPostEx", | |
b3d59367 AZ |
4498 | }; |
4499 | ||
4500 | DEFINE_STRING_TABLE_LOOKUP(service_exec_ex_command, ServiceExecCommand); | |
4501 | ||
308d72dc LP |
4502 | static const char* const notify_state_table[_NOTIFY_STATE_MAX] = { |
4503 | [NOTIFY_UNKNOWN] = "unknown", | |
4504 | [NOTIFY_READY] = "ready", | |
4505 | [NOTIFY_RELOADING] = "reloading", | |
4506 | [NOTIFY_STOPPING] = "stopping", | |
4507 | }; | |
4508 | ||
4509 | DEFINE_STRING_TABLE_LOOKUP(notify_state, NotifyState); | |
4510 | ||
f42806df LP |
4511 | static const char* const service_result_table[_SERVICE_RESULT_MAX] = { |
4512 | [SERVICE_SUCCESS] = "success", | |
4513 | [SERVICE_FAILURE_RESOURCES] = "resources", | |
c35755fb | 4514 | [SERVICE_FAILURE_PROTOCOL] = "protocol", |
f42806df LP |
4515 | [SERVICE_FAILURE_TIMEOUT] = "timeout", |
4516 | [SERVICE_FAILURE_EXIT_CODE] = "exit-code", | |
4517 | [SERVICE_FAILURE_SIGNAL] = "signal", | |
bb242b7b | 4518 | [SERVICE_FAILURE_CORE_DUMP] = "core-dump", |
8d1b002a | 4519 | [SERVICE_FAILURE_WATCHDOG] = "watchdog", |
07299350 | 4520 | [SERVICE_FAILURE_START_LIMIT_HIT] = "start-limit-hit", |
afcfaa69 | 4521 | [SERVICE_FAILURE_OOM_KILL] = "oom-kill", |
31cd5f63 | 4522 | [SERVICE_SKIP_CONDITION] = "exec-condition", |
f42806df LP |
4523 | }; |
4524 | ||
4525 | DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult); | |
4526 | ||
bf760801 JK |
4527 | static const char* const service_timeout_failure_mode_table[_SERVICE_TIMEOUT_FAILURE_MODE_MAX] = { |
4528 | [SERVICE_TIMEOUT_TERMINATE] = "terminate", | |
4529 | [SERVICE_TIMEOUT_ABORT] = "abort", | |
4530 | [SERVICE_TIMEOUT_KILL] = "kill", | |
4531 | }; | |
4532 | ||
4533 | DEFINE_STRING_TABLE_LOOKUP(service_timeout_failure_mode, ServiceTimeoutFailureMode); | |
4534 | ||
87f0e418 | 4535 | const UnitVTable service_vtable = { |
7d17cfbc | 4536 | .object_size = sizeof(Service), |
718db961 LP |
4537 | .exec_context_offset = offsetof(Service, exec_context), |
4538 | .cgroup_context_offset = offsetof(Service, cgroup_context), | |
4539 | .kill_context_offset = offsetof(Service, kill_context), | |
613b411c | 4540 | .exec_runtime_offset = offsetof(Service, exec_runtime), |
29206d46 | 4541 | .dynamic_creds_offset = offsetof(Service, dynamic_creds), |
3ef63c31 | 4542 | |
f975e971 LP |
4543 | .sections = |
4544 | "Unit\0" | |
4545 | "Service\0" | |
4546 | "Install\0", | |
4ad49000 | 4547 | .private_section = "Service", |
71645aca | 4548 | |
1d9cc876 LP |
4549 | .can_transient = true, |
4550 | .can_delegate = true, | |
c80a9a33 | 4551 | .can_fail = true, |
4d824a4e | 4552 | .can_set_managed_oom = true, |
1d9cc876 | 4553 | |
034c6ed7 LP |
4554 | .init = service_init, |
4555 | .done = service_done, | |
a16e1123 | 4556 | .load = service_load, |
a354329f | 4557 | .release_resources = service_release_resources, |
a16e1123 LP |
4558 | |
4559 | .coldplug = service_coldplug, | |
034c6ed7 | 4560 | |
5cb5a6ff LP |
4561 | .dump = service_dump, |
4562 | ||
4563 | .start = service_start, | |
4564 | .stop = service_stop, | |
4565 | .reload = service_reload, | |
4566 | ||
034c6ed7 LP |
4567 | .can_reload = service_can_reload, |
4568 | ||
8a0867d6 | 4569 | .kill = service_kill, |
4c2f5842 LP |
4570 | .clean = service_clean, |
4571 | .can_clean = service_can_clean, | |
8a0867d6 | 4572 | |
d9e45bc3 MS |
4573 | .freeze = unit_freeze_vtable_common, |
4574 | .thaw = unit_thaw_vtable_common, | |
4575 | ||
a16e1123 LP |
4576 | .serialize = service_serialize, |
4577 | .deserialize_item = service_deserialize_item, | |
4578 | ||
5cb5a6ff | 4579 | .active_state = service_active_state, |
10a94420 | 4580 | .sub_state_to_string = service_sub_state_to_string, |
5cb5a6ff | 4581 | |
deb4e708 MK |
4582 | .will_restart = service_will_restart, |
4583 | ||
f2f725e5 | 4584 | .may_gc = service_may_gc, |
701cc384 | 4585 | |
034c6ed7 | 4586 | .sigchld_event = service_sigchld_event, |
2c4104f0 | 4587 | |
fdf20a31 | 4588 | .reset_failed = service_reset_failed, |
5632e374 | 4589 | |
4ad49000 | 4590 | .notify_cgroup_empty = service_notify_cgroup_empty_event, |
afcfaa69 | 4591 | .notify_cgroup_oom = service_notify_cgroup_oom_event, |
8c47c732 | 4592 | .notify_message = service_notify_message, |
8e274523 | 4593 | |
291d565a LP |
4594 | .main_pid = service_main_pid, |
4595 | .control_pid = service_control_pid, | |
4596 | ||
05e343b7 | 4597 | .bus_name_owner_change = service_bus_name_owner_change, |
05e343b7 | 4598 | |
74c964d3 LP |
4599 | .bus_set_property = bus_service_set_property, |
4600 | .bus_commit_properties = bus_service_commit_properties, | |
4139c1b2 | 4601 | |
68db7a3b | 4602 | .get_timeout = service_get_timeout, |
bb2c7685 | 4603 | .needs_console = service_needs_console, |
7af67e9a | 4604 | .exit_status = service_exit_status, |
718db961 | 4605 | |
c6918296 MS |
4606 | .status_message_formats = { |
4607 | .starting_stopping = { | |
4608 | [0] = "Starting %s...", | |
4609 | [1] = "Stopping %s...", | |
4610 | }, | |
4611 | .finished_start_job = { | |
c6918296 | 4612 | [JOB_FAILED] = "Failed to start %s.", |
c6918296 MS |
4613 | }, |
4614 | .finished_stop_job = { | |
4615 | [JOB_DONE] = "Stopped %s.", | |
4616 | [JOB_FAILED] = "Stopped (with error) %s.", | |
c6918296 | 4617 | }, |
eda0cbf0 | 4618 | .finished_job = service_finished_job, |
c6918296 | 4619 | }, |
5cb5a6ff | 4620 | }; |