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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
a7334b09 | 2 | |
5cb5a6ff | 3 | #include <errno.h> |
034c6ed7 | 4 | #include <signal.h> |
ca78ad1d ZJS |
5 | #include <sys/stat.h> |
6 | #include <sys/types.h> | |
2c4104f0 | 7 | #include <unistd.h> |
5cb5a6ff | 8 | |
7a0019d3 LP |
9 | #include "sd-messages.h" |
10 | ||
b5efdb8a | 11 | #include "alloc-util.h" |
574634bc | 12 | #include "async.h" |
4f5dd394 LP |
13 | #include "bus-error.h" |
14 | #include "bus-kernel.h" | |
15 | #include "bus-util.h" | |
4139c1b2 | 16 | #include "dbus-service.h" |
6fcbec6f | 17 | #include "dbus-unit.h" |
f6a6225e | 18 | #include "def.h" |
4d1a6904 | 19 | #include "env-util.h" |
4f5dd394 LP |
20 | #include "escape.h" |
21 | #include "exit-status.h" | |
3ffd4af2 | 22 | #include "fd-util.h" |
a5c32cff | 23 | #include "fileio.h" |
f97b34a6 | 24 | #include "format-util.h" |
f4f15635 | 25 | #include "fs-util.h" |
4f5dd394 LP |
26 | #include "load-dropin.h" |
27 | #include "load-fragment.h" | |
28 | #include "log.h" | |
29 | #include "manager.h" | |
6bedfcbb | 30 | #include "parse-util.h" |
4f5dd394 | 31 | #include "path-util.h" |
0b452006 | 32 | #include "process-util.h" |
d68c645b | 33 | #include "serialize.h" |
3ffd4af2 | 34 | #include "service.h" |
24882e06 | 35 | #include "signal-util.h" |
4f5dd394 | 36 | #include "special.h" |
e266c068 | 37 | #include "stdio-util.h" |
8b43440b | 38 | #include "string-table.h" |
07630cea | 39 | #include "string-util.h" |
4f5dd394 LP |
40 | #include "strv.h" |
41 | #include "unit-name.h" | |
4f5dd394 LP |
42 | #include "unit.h" |
43 | #include "utf8.h" | |
44 | #include "util.h" | |
034c6ed7 | 45 | |
acbb0225 | 46 | static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = { |
87f0e418 LP |
47 | [SERVICE_DEAD] = UNIT_INACTIVE, |
48 | [SERVICE_START_PRE] = UNIT_ACTIVATING, | |
49 | [SERVICE_START] = UNIT_ACTIVATING, | |
50 | [SERVICE_START_POST] = UNIT_ACTIVATING, | |
51 | [SERVICE_RUNNING] = UNIT_ACTIVE, | |
80876c20 | 52 | [SERVICE_EXITED] = UNIT_ACTIVE, |
032ff4af | 53 | [SERVICE_RELOAD] = UNIT_RELOADING, |
87f0e418 | 54 | [SERVICE_STOP] = UNIT_DEACTIVATING, |
c87700a1 | 55 | [SERVICE_STOP_WATCHDOG] = UNIT_DEACTIVATING, |
87f0e418 LP |
56 | [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, |
57 | [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
58 | [SERVICE_STOP_POST] = UNIT_DEACTIVATING, | |
59 | [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, | |
60 | [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
fdf20a31 | 61 | [SERVICE_FAILED] = UNIT_FAILED, |
6124958c | 62 | [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING |
034c6ed7 | 63 | }; |
5cb5a6ff | 64 | |
e056b01d LP |
65 | /* For Type=idle we never want to delay any other jobs, hence we |
66 | * consider idle jobs active as soon as we start working on them */ | |
67 | static const UnitActiveState state_translation_table_idle[_SERVICE_STATE_MAX] = { | |
68 | [SERVICE_DEAD] = UNIT_INACTIVE, | |
69 | [SERVICE_START_PRE] = UNIT_ACTIVE, | |
70 | [SERVICE_START] = UNIT_ACTIVE, | |
71 | [SERVICE_START_POST] = UNIT_ACTIVE, | |
72 | [SERVICE_RUNNING] = UNIT_ACTIVE, | |
73 | [SERVICE_EXITED] = UNIT_ACTIVE, | |
74 | [SERVICE_RELOAD] = UNIT_RELOADING, | |
75 | [SERVICE_STOP] = UNIT_DEACTIVATING, | |
c87700a1 | 76 | [SERVICE_STOP_WATCHDOG] = UNIT_DEACTIVATING, |
e056b01d LP |
77 | [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, |
78 | [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
79 | [SERVICE_STOP_POST] = UNIT_DEACTIVATING, | |
80 | [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, | |
81 | [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
82 | [SERVICE_FAILED] = UNIT_FAILED, | |
83 | [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING | |
84 | }; | |
85 | ||
5686391b | 86 | static int service_dispatch_inotify_io(sd_event_source *source, int fd, uint32_t events, void *userdata); |
718db961 LP |
87 | static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); |
88 | static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata); | |
5686391b | 89 | static int service_dispatch_exec_io(sd_event_source *source, int fd, uint32_t events, void *userdata); |
718db961 | 90 | |
842129f5 | 91 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f); |
308d72dc | 92 | static void service_enter_reload_by_notify(Service *s); |
842129f5 | 93 | |
a16e1123 LP |
94 | static void service_init(Unit *u) { |
95 | Service *s = SERVICE(u); | |
96 | ||
97 | assert(u); | |
ac155bb8 | 98 | assert(u->load_state == UNIT_STUB); |
a16e1123 | 99 | |
1f19a534 OS |
100 | s->timeout_start_usec = u->manager->default_timeout_start_usec; |
101 | s->timeout_stop_usec = u->manager->default_timeout_stop_usec; | |
dc653bf4 JK |
102 | s->timeout_abort_usec = u->manager->default_timeout_abort_usec; |
103 | s->timeout_abort_set = u->manager->default_timeout_abort_set; | |
1f19a534 | 104 | s->restart_usec = u->manager->default_restart_usec; |
36c16a7c | 105 | s->runtime_max_usec = USEC_INFINITY; |
0b86feac | 106 | s->type = _SERVICE_TYPE_INVALID; |
a16e1123 | 107 | s->socket_fd = -1; |
a34ceba6 | 108 | s->stdin_fd = s->stdout_fd = s->stderr_fd = -1; |
3185a36b | 109 | s->guess_main_pid = true; |
a16e1123 | 110 | |
a16e1123 | 111 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; |
00f5ad93 LP |
112 | |
113 | s->exec_context.keyring_mode = MANAGER_IS_SYSTEM(u->manager) ? | |
114 | EXEC_KEYRING_PRIVATE : EXEC_KEYRING_INHERIT; | |
aa8c4bbf LP |
115 | |
116 | s->watchdog_original_usec = USEC_INFINITY; | |
afcfaa69 LP |
117 | |
118 | s->oom_policy = _OOM_POLICY_INVALID; | |
a16e1123 LP |
119 | } |
120 | ||
5e94833f LP |
121 | static void service_unwatch_control_pid(Service *s) { |
122 | assert(s); | |
123 | ||
124 | if (s->control_pid <= 0) | |
125 | return; | |
126 | ||
127 | unit_unwatch_pid(UNIT(s), s->control_pid); | |
128 | s->control_pid = 0; | |
129 | } | |
130 | ||
131 | static void service_unwatch_main_pid(Service *s) { | |
132 | assert(s); | |
133 | ||
134 | if (s->main_pid <= 0) | |
135 | return; | |
136 | ||
137 | unit_unwatch_pid(UNIT(s), s->main_pid); | |
138 | s->main_pid = 0; | |
139 | } | |
140 | ||
3e52541e MS |
141 | static void service_unwatch_pid_file(Service *s) { |
142 | if (!s->pid_file_pathspec) | |
143 | return; | |
144 | ||
f2341e0a | 145 | log_unit_debug(UNIT(s), "Stopping watch for PID file %s", s->pid_file_pathspec->path); |
718db961 | 146 | path_spec_unwatch(s->pid_file_pathspec); |
3e52541e | 147 | path_spec_done(s->pid_file_pathspec); |
a1e58e8e | 148 | s->pid_file_pathspec = mfree(s->pid_file_pathspec); |
3e52541e MS |
149 | } |
150 | ||
5925dd3c LP |
151 | static int service_set_main_pid(Service *s, pid_t pid) { |
152 | assert(s); | |
153 | ||
154 | if (pid <= 1) | |
155 | return -EINVAL; | |
156 | ||
df0ff127 | 157 | if (pid == getpid_cached()) |
5925dd3c LP |
158 | return -EINVAL; |
159 | ||
7400b9d2 LP |
160 | if (s->main_pid == pid && s->main_pid_known) |
161 | return 0; | |
162 | ||
163 | if (s->main_pid != pid) { | |
164 | service_unwatch_main_pid(s); | |
165 | exec_status_start(&s->main_exec_status, pid); | |
166 | } | |
41efeaec | 167 | |
6dfa5494 LP |
168 | s->main_pid = pid; |
169 | s->main_pid_known = true; | |
4d051546 | 170 | s->main_pid_alien = pid_is_my_child(pid) == 0; |
6dfa5494 | 171 | |
4d051546 | 172 | if (s->main_pid_alien) |
f2341e0a | 173 | 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 |
174 | |
175 | return 0; | |
176 | } | |
177 | ||
3e7a1f50 | 178 | void service_close_socket_fd(Service *s) { |
4f2d528d LP |
179 | assert(s); |
180 | ||
5cc3985e | 181 | /* Undo the effect of service_set_socket_fd(). */ |
4f2d528d | 182 | |
5cc3985e | 183 | s->socket_fd = asynchronous_close(s->socket_fd); |
6cf6bbc2 | 184 | |
5cc3985e LP |
185 | if (UNIT_ISSET(s->accept_socket)) { |
186 | socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket))); | |
187 | unit_ref_unset(&s->accept_socket); | |
188 | } | |
6cf6bbc2 LP |
189 | } |
190 | ||
a6927d7f MO |
191 | static void service_stop_watchdog(Service *s) { |
192 | assert(s); | |
193 | ||
718db961 | 194 | s->watchdog_event_source = sd_event_source_unref(s->watchdog_event_source); |
842129f5 | 195 | s->watchdog_timestamp = DUAL_TIMESTAMP_NULL; |
a6927d7f MO |
196 | } |
197 | ||
2787d83c M |
198 | static usec_t service_get_watchdog_usec(Service *s) { |
199 | assert(s); | |
200 | ||
201 | if (s->watchdog_override_enable) | |
202 | return s->watchdog_override_usec; | |
9fb1cdb4 LP |
203 | |
204 | return s->watchdog_original_usec; | |
2787d83c M |
205 | } |
206 | ||
842129f5 | 207 | static void service_start_watchdog(Service *s) { |
2787d83c | 208 | usec_t watchdog_usec; |
9fb1cdb4 | 209 | int r; |
bb242b7b MO |
210 | |
211 | assert(s); | |
212 | ||
2787d83c | 213 | watchdog_usec = service_get_watchdog_usec(s); |
9fb1cdb4 LP |
214 | if (IN_SET(watchdog_usec, 0, USEC_INFINITY)) { |
215 | service_stop_watchdog(s); | |
bb242b7b | 216 | return; |
9fb1cdb4 | 217 | } |
bb242b7b | 218 | |
718db961 | 219 | if (s->watchdog_event_source) { |
2787d83c | 220 | r = sd_event_source_set_time(s->watchdog_event_source, usec_add(s->watchdog_timestamp.monotonic, watchdog_usec)); |
718db961 | 221 | if (r < 0) { |
f2341e0a | 222 | log_unit_warning_errno(UNIT(s), r, "Failed to reset watchdog timer: %m"); |
718db961 LP |
223 | return; |
224 | } | |
225 | ||
842129f5 | 226 | r = sd_event_source_set_enabled(s->watchdog_event_source, SD_EVENT_ONESHOT); |
c4ef3317 | 227 | } else { |
6a0f1f6d LP |
228 | r = sd_event_add_time( |
229 | UNIT(s)->manager->event, | |
230 | &s->watchdog_event_source, | |
231 | CLOCK_MONOTONIC, | |
2787d83c | 232 | usec_add(s->watchdog_timestamp.monotonic, watchdog_usec), 0, |
6a0f1f6d | 233 | service_dispatch_watchdog, s); |
c4ef3317 | 234 | if (r < 0) { |
f2341e0a | 235 | log_unit_warning_errno(UNIT(s), r, "Failed to add watchdog timer: %m"); |
c4ef3317 LP |
236 | return; |
237 | } | |
238 | ||
7dfbe2e3 TG |
239 | (void) sd_event_source_set_description(s->watchdog_event_source, "service-watchdog"); |
240 | ||
c4ef3317 LP |
241 | /* Let's process everything else which might be a sign |
242 | * of living before we consider a service died. */ | |
243 | r = sd_event_source_set_priority(s->watchdog_event_source, SD_EVENT_PRIORITY_IDLE); | |
244 | } | |
bb242b7b | 245 | if (r < 0) |
f2341e0a | 246 | log_unit_warning_errno(UNIT(s), r, "Failed to install watchdog timer: %m"); |
bb242b7b MO |
247 | } |
248 | ||
ec35a7f6 LP |
249 | static void service_extend_event_source_timeout(Service *s, sd_event_source *source, usec_t extended) { |
250 | usec_t current; | |
251 | int r; | |
252 | ||
a327431b DB |
253 | assert(s); |
254 | ||
ec35a7f6 LP |
255 | /* Extends the specified event source timer to at least the specified time, unless it is already later |
256 | * anyway. */ | |
a327431b | 257 | |
ec35a7f6 LP |
258 | if (!source) |
259 | return; | |
a327431b | 260 | |
ec35a7f6 LP |
261 | r = sd_event_source_get_time(source, ¤t); |
262 | if (r < 0) { | |
263 | const char *desc; | |
264 | (void) sd_event_source_get_description(s->timer_event_source, &desc); | |
265 | log_unit_warning_errno(UNIT(s), r, "Failed to retrieve timeout time for event source '%s', ignoring: %m", strna(desc)); | |
266 | return; | |
267 | } | |
a327431b | 268 | |
ec35a7f6 LP |
269 | if (current >= extended) /* Current timeout is already longer, ignore this. */ |
270 | return; | |
a327431b | 271 | |
ec35a7f6 LP |
272 | r = sd_event_source_set_time(source, extended); |
273 | if (r < 0) { | |
274 | const char *desc; | |
275 | (void) sd_event_source_get_description(s->timer_event_source, &desc); | |
276 | log_unit_warning_errno(UNIT(s), r, "Failed to set timeout time for even source '%s', ignoring %m", strna(desc)); | |
a327431b DB |
277 | } |
278 | } | |
279 | ||
ec35a7f6 LP |
280 | static void service_extend_timeout(Service *s, usec_t extend_timeout_usec) { |
281 | usec_t extended; | |
282 | ||
283 | assert(s); | |
284 | ||
285 | if (IN_SET(extend_timeout_usec, 0, USEC_INFINITY)) | |
286 | return; | |
287 | ||
288 | extended = usec_add(now(CLOCK_MONOTONIC), extend_timeout_usec); | |
289 | ||
290 | service_extend_event_source_timeout(s, s->timer_event_source, extended); | |
291 | service_extend_event_source_timeout(s, s->watchdog_event_source, extended); | |
292 | } | |
293 | ||
a6927d7f MO |
294 | static void service_reset_watchdog(Service *s) { |
295 | assert(s); | |
296 | ||
297 | dual_timestamp_get(&s->watchdog_timestamp); | |
842129f5 | 298 | service_start_watchdog(s); |
a6927d7f MO |
299 | } |
300 | ||
95d0d8ed | 301 | static void service_override_watchdog_timeout(Service *s, usec_t watchdog_override_usec) { |
2787d83c M |
302 | assert(s); |
303 | ||
304 | s->watchdog_override_enable = true; | |
305 | s->watchdog_override_usec = watchdog_override_usec; | |
306 | service_reset_watchdog(s); | |
307 | ||
308 | log_unit_debug(UNIT(s), "watchdog_usec="USEC_FMT, s->watchdog_usec); | |
309 | log_unit_debug(UNIT(s), "watchdog_override_usec="USEC_FMT, s->watchdog_override_usec); | |
310 | } | |
311 | ||
a354329f LP |
312 | static void service_fd_store_unlink(ServiceFDStore *fs) { |
313 | ||
314 | if (!fs) | |
315 | return; | |
316 | ||
317 | if (fs->service) { | |
318 | assert(fs->service->n_fd_store > 0); | |
319 | LIST_REMOVE(fd_store, fs->service->fd_store, fs); | |
320 | fs->service->n_fd_store--; | |
321 | } | |
322 | ||
323 | if (fs->event_source) { | |
324 | sd_event_source_set_enabled(fs->event_source, SD_EVENT_OFF); | |
325 | sd_event_source_unref(fs->event_source); | |
326 | } | |
327 | ||
8dd4c05b | 328 | free(fs->fdname); |
a354329f LP |
329 | safe_close(fs->fd); |
330 | free(fs); | |
331 | } | |
332 | ||
f0bfbfac ZJS |
333 | static void service_release_fd_store(Service *s) { |
334 | assert(s); | |
335 | ||
7eb2a8a1 LP |
336 | if (s->n_keep_fd_store > 0) |
337 | return; | |
338 | ||
f0bfbfac ZJS |
339 | log_unit_debug(UNIT(s), "Releasing all stored fds"); |
340 | while (s->fd_store) | |
341 | service_fd_store_unlink(s->fd_store); | |
342 | ||
343 | assert(s->n_fd_store == 0); | |
344 | } | |
345 | ||
7eb2a8a1 | 346 | static void service_release_resources(Unit *u) { |
a354329f LP |
347 | Service *s = SERVICE(u); |
348 | ||
349 | assert(s); | |
350 | ||
a34ceba6 | 351 | if (!s->fd_store && s->stdin_fd < 0 && s->stdout_fd < 0 && s->stderr_fd < 0) |
a354329f LP |
352 | return; |
353 | ||
f0bfbfac | 354 | log_unit_debug(u, "Releasing resources."); |
a354329f | 355 | |
a34ceba6 LP |
356 | s->stdin_fd = safe_close(s->stdin_fd); |
357 | s->stdout_fd = safe_close(s->stdout_fd); | |
358 | s->stderr_fd = safe_close(s->stderr_fd); | |
359 | ||
7eb2a8a1 | 360 | service_release_fd_store(s); |
a354329f LP |
361 | } |
362 | ||
87f0e418 LP |
363 | static void service_done(Unit *u) { |
364 | Service *s = SERVICE(u); | |
44d8db9e LP |
365 | |
366 | assert(s); | |
367 | ||
a1e58e8e LP |
368 | s->pid_file = mfree(s->pid_file); |
369 | s->status_text = mfree(s->status_text); | |
efe6e7d3 | 370 | |
e8a565cb | 371 | s->exec_runtime = exec_runtime_unref(s->exec_runtime, false); |
e537352b | 372 | exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); |
44d8db9e | 373 | s->control_command = NULL; |
867b3b7d | 374 | s->main_command = NULL; |
44d8db9e | 375 | |
29206d46 LP |
376 | dynamic_creds_unref(&s->dynamic_creds); |
377 | ||
37520c1b LP |
378 | exit_status_set_free(&s->restart_prevent_status); |
379 | exit_status_set_free(&s->restart_force_status); | |
380 | exit_status_set_free(&s->success_status); | |
96342de6 | 381 | |
44d8db9e LP |
382 | /* This will leak a process, but at least no memory or any of |
383 | * our resources */ | |
5e94833f LP |
384 | service_unwatch_main_pid(s); |
385 | service_unwatch_control_pid(s); | |
3e52541e | 386 | service_unwatch_pid_file(s); |
44d8db9e | 387 | |
05e343b7 | 388 | if (s->bus_name) { |
ac155bb8 | 389 | unit_unwatch_bus_name(u, s->bus_name); |
a1e58e8e | 390 | s->bus_name = mfree(s->bus_name); |
05e343b7 LP |
391 | } |
392 | ||
d8ccf5fd DM |
393 | s->bus_name_owner = mfree(s->bus_name_owner); |
394 | ||
064c5938 ZJS |
395 | s->usb_function_descriptors = mfree(s->usb_function_descriptors); |
396 | s->usb_function_strings = mfree(s->usb_function_strings); | |
397 | ||
4f2d528d | 398 | service_close_socket_fd(s); |
9d565427 | 399 | s->peer = socket_peer_unref(s->peer); |
4f2d528d | 400 | |
57020a3a | 401 | unit_ref_unset(&s->accept_socket); |
f976f3f6 | 402 | |
bb242b7b MO |
403 | service_stop_watchdog(s); |
404 | ||
718db961 | 405 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
5686391b | 406 | s->exec_fd_event_source = sd_event_source_unref(s->exec_fd_event_source); |
a354329f | 407 | |
7eb2a8a1 | 408 | service_release_resources(u); |
718db961 LP |
409 | } |
410 | ||
2339fc93 LP |
411 | static int on_fd_store_io(sd_event_source *e, int fd, uint32_t revents, void *userdata) { |
412 | ServiceFDStore *fs = userdata; | |
413 | ||
414 | assert(e); | |
415 | assert(fs); | |
416 | ||
417 | /* If we get either EPOLLHUP or EPOLLERR, it's time to remove this entry from the fd store */ | |
16f70d63 ZJS |
418 | log_unit_debug(UNIT(fs->service), |
419 | "Received %s on stored fd %d (%s), closing.", | |
420 | revents & EPOLLERR ? "EPOLLERR" : "EPOLLHUP", | |
421 | fs->fd, strna(fs->fdname)); | |
2339fc93 LP |
422 | service_fd_store_unlink(fs); |
423 | return 0; | |
424 | } | |
425 | ||
8dd4c05b | 426 | static int service_add_fd_store(Service *s, int fd, const char *name) { |
2339fc93 LP |
427 | ServiceFDStore *fs; |
428 | int r; | |
429 | ||
9021ff17 ZJS |
430 | /* fd is always consumed if we return >= 0 */ |
431 | ||
2339fc93 LP |
432 | assert(s); |
433 | assert(fd >= 0); | |
434 | ||
435 | if (s->n_fd_store >= s->n_fd_store_max) | |
b0924635 ZJS |
436 | return -EXFULL; /* Our store is full. |
437 | * Use this errno rather than E[NM]FILE to distinguish from | |
438 | * the case where systemd itself hits the file limit. */ | |
2339fc93 LP |
439 | |
440 | LIST_FOREACH(fd_store, fs, s->fd_store) { | |
441 | r = same_fd(fs->fd, fd); | |
442 | if (r < 0) | |
443 | return r; | |
444 | if (r > 0) { | |
2339fc93 | 445 | safe_close(fd); |
9021ff17 | 446 | return 0; /* fd already included */ |
2339fc93 LP |
447 | } |
448 | } | |
449 | ||
450 | fs = new0(ServiceFDStore, 1); | |
451 | if (!fs) | |
452 | return -ENOMEM; | |
453 | ||
454 | fs->fd = fd; | |
455 | fs->service = s; | |
8dd4c05b | 456 | fs->fdname = strdup(name ?: "stored"); |
17dec0f7 | 457 | if (!fs->fdname) { |
458 | free(fs); | |
8dd4c05b | 459 | return -ENOMEM; |
17dec0f7 | 460 | } |
2339fc93 LP |
461 | |
462 | r = sd_event_add_io(UNIT(s)->manager->event, &fs->event_source, fd, 0, on_fd_store_io, fs); | |
3ceb72e5 | 463 | if (r < 0 && r != -EPERM) { /* EPERM indicates fds that aren't pollable, which is OK */ |
8dd4c05b | 464 | free(fs->fdname); |
2339fc93 LP |
465 | free(fs); |
466 | return r; | |
3ceb72e5 LP |
467 | } else if (r >= 0) |
468 | (void) sd_event_source_set_description(fs->event_source, "service-fd-store"); | |
7dfbe2e3 | 469 | |
2339fc93 LP |
470 | LIST_PREPEND(fd_store, s->fd_store, fs); |
471 | s->n_fd_store++; | |
472 | ||
9021ff17 | 473 | return 1; /* fd newly stored */ |
2339fc93 LP |
474 | } |
475 | ||
8dd4c05b | 476 | static int service_add_fd_store_set(Service *s, FDSet *fds, const char *name) { |
2339fc93 LP |
477 | int r; |
478 | ||
479 | assert(s); | |
480 | ||
b0924635 | 481 | while (fdset_size(fds) > 0) { |
2339fc93 LP |
482 | _cleanup_close_ int fd = -1; |
483 | ||
484 | fd = fdset_steal_first(fds); | |
485 | if (fd < 0) | |
486 | break; | |
487 | ||
8dd4c05b | 488 | r = service_add_fd_store(s, fd, name); |
b0924635 ZJS |
489 | if (r == -EXFULL) |
490 | return log_unit_warning_errno(UNIT(s), r, | |
491 | "Cannot store more fds than FileDescriptorStoreMax=%u, closing remaining.", | |
492 | s->n_fd_store_max); | |
2339fc93 | 493 | if (r < 0) |
b0924635 | 494 | return log_unit_error_errno(UNIT(s), r, "Failed to add fd to store: %m"); |
9021ff17 | 495 | if (r > 0) |
16f70d63 | 496 | log_unit_debug(UNIT(s), "Added fd %u (%s) to fd store.", fd, strna(name)); |
9021ff17 | 497 | fd = -1; |
2339fc93 LP |
498 | } |
499 | ||
2339fc93 LP |
500 | return 0; |
501 | } | |
502 | ||
e78ee06d LP |
503 | static void service_remove_fd_store(Service *s, const char *name) { |
504 | ServiceFDStore *fs, *n; | |
505 | ||
506 | assert(s); | |
507 | assert(name); | |
508 | ||
509 | LIST_FOREACH_SAFE(fd_store, fs, n, s->fd_store) { | |
510 | if (!streq(fs->fdname, name)) | |
511 | continue; | |
512 | ||
513 | log_unit_debug(UNIT(s), "Got explicit request to remove fd %i (%s), closing.", fs->fd, name); | |
514 | service_fd_store_unlink(fs); | |
515 | } | |
516 | } | |
517 | ||
718db961 LP |
518 | static int service_arm_timer(Service *s, usec_t usec) { |
519 | int r; | |
520 | ||
521 | assert(s); | |
522 | ||
718db961 | 523 | if (s->timer_event_source) { |
36c16a7c | 524 | r = sd_event_source_set_time(s->timer_event_source, usec); |
718db961 LP |
525 | if (r < 0) |
526 | return r; | |
527 | ||
528 | return sd_event_source_set_enabled(s->timer_event_source, SD_EVENT_ONESHOT); | |
529 | } | |
530 | ||
36c16a7c LP |
531 | if (usec == USEC_INFINITY) |
532 | return 0; | |
533 | ||
7dfbe2e3 | 534 | r = sd_event_add_time( |
6a0f1f6d LP |
535 | UNIT(s)->manager->event, |
536 | &s->timer_event_source, | |
537 | CLOCK_MONOTONIC, | |
36c16a7c | 538 | usec, 0, |
6a0f1f6d | 539 | service_dispatch_timer, s); |
7dfbe2e3 TG |
540 | if (r < 0) |
541 | return r; | |
542 | ||
543 | (void) sd_event_source_set_description(s->timer_event_source, "service-timer"); | |
544 | ||
545 | return 0; | |
44d8db9e LP |
546 | } |
547 | ||
243b1432 LP |
548 | static int service_verify(Service *s) { |
549 | assert(s); | |
550 | ||
1124fe6f | 551 | if (UNIT(s)->load_state != UNIT_LOADED) |
243b1432 LP |
552 | return 0; |
553 | ||
3f00d379 ZJS |
554 | if (!s->exec_command[SERVICE_EXEC_START] && !s->exec_command[SERVICE_EXEC_STOP] |
555 | && UNIT(s)->success_action == EMERGENCY_ACTION_NONE) { | |
556 | /* FailureAction= only makes sense if one of the start or stop commands is specified. | |
557 | * SuccessAction= will be executed unconditionally if no commands are specified. Hence, | |
558 | * either a command or SuccessAction= are required. */ | |
559 | ||
560 | log_unit_error(UNIT(s), "Service has no ExecStart=, ExecStop=, or SuccessAction=. Refusing."); | |
6f40aa45 | 561 | return -ENOEXEC; |
243b1432 LP |
562 | } |
563 | ||
96fb8242 | 564 | if (s->type != SERVICE_ONESHOT && !s->exec_command[SERVICE_EXEC_START]) { |
f2341e0a | 565 | log_unit_error(UNIT(s), "Service has no ExecStart= setting, which is only allowed for Type=oneshot services. Refusing."); |
6f40aa45 | 566 | return -ENOEXEC; |
96fb8242 LP |
567 | } |
568 | ||
3f00d379 ZJS |
569 | if (!s->remain_after_exit && !s->exec_command[SERVICE_EXEC_START] && UNIT(s)->success_action == EMERGENCY_ACTION_NONE) { |
570 | log_unit_error(UNIT(s), "Service has no ExecStart= and no SuccessAction= settings and does not have RemainAfterExit=yes set. Refusing."); | |
6f40aa45 | 571 | return -ENOEXEC; |
96fb8242 LP |
572 | } |
573 | ||
574 | if (s->type != SERVICE_ONESHOT && s->exec_command[SERVICE_EXEC_START]->command_next) { | |
f2341e0a | 575 | log_unit_error(UNIT(s), "Service has more than one ExecStart= setting, which is only allowed for Type=oneshot services. Refusing."); |
6f40aa45 | 576 | return -ENOEXEC; |
6cf6bbc2 LP |
577 | } |
578 | ||
b0693d30 | 579 | if (s->type == SERVICE_ONESHOT && s->restart != SERVICE_RESTART_NO) { |
f2341e0a | 580 | log_unit_error(UNIT(s), "Service has Restart= setting other than no, which isn't allowed for Type=oneshot services. Refusing."); |
6f40aa45 | 581 | return -ENOEXEC; |
37520c1b LP |
582 | } |
583 | ||
55ebf98c | 584 | if (s->type == SERVICE_ONESHOT && !exit_status_set_is_empty(&s->restart_force_status)) { |
f2341e0a | 585 | log_unit_error(UNIT(s), "Service has RestartForceStatus= set, which isn't allowed for Type=oneshot services. Refusing."); |
6f40aa45 | 586 | return -ENOEXEC; |
b0693d30 MW |
587 | } |
588 | ||
05e343b7 | 589 | if (s->type == SERVICE_DBUS && !s->bus_name) { |
f2341e0a | 590 | log_unit_error(UNIT(s), "Service is of type D-Bus but no D-Bus service name has been specified. Refusing."); |
6f40aa45 | 591 | return -ENOEXEC; |
4d0e5dbd LP |
592 | } |
593 | ||
7e2668c6 | 594 | if (s->bus_name && s->type != SERVICE_DBUS) |
f2341e0a | 595 | log_unit_warning(UNIT(s), "Service has a D-Bus service name specified, but is not of type dbus. Ignoring."); |
7e2668c6 | 596 | |
3742095b | 597 | if (s->exec_context.pam_name && !IN_SET(s->kill_context.kill_mode, KILL_CONTROL_GROUP, KILL_MIXED)) { |
f2341e0a | 598 | log_unit_error(UNIT(s), "Service has PAM enabled. Kill mode must be set to 'control-group' or 'mixed'. Refusing."); |
6f40aa45 | 599 | return -ENOEXEC; |
05e343b7 LP |
600 | } |
601 | ||
6b7e5923 PS |
602 | if (s->usb_function_descriptors && !s->usb_function_strings) |
603 | log_unit_warning(UNIT(s), "Service has USBFunctionDescriptors= setting, but no USBFunctionStrings=. Ignoring."); | |
604 | ||
605 | if (!s->usb_function_descriptors && s->usb_function_strings) | |
606 | log_unit_warning(UNIT(s), "Service has USBFunctionStrings= setting, but no USBFunctionDescriptors=. Ignoring."); | |
607 | ||
36c16a7c LP |
608 | if (s->runtime_max_usec != USEC_INFINITY && s->type == SERVICE_ONESHOT) |
609 | log_unit_warning(UNIT(s), "MaxRuntimeSec= has no effect in combination with Type=oneshot. Ignoring."); | |
610 | ||
243b1432 LP |
611 | return 0; |
612 | } | |
613 | ||
a40eb732 LP |
614 | static int service_add_default_dependencies(Service *s) { |
615 | int r; | |
616 | ||
617 | assert(s); | |
618 | ||
45f06b34 LP |
619 | if (!UNIT(s)->default_dependencies) |
620 | return 0; | |
621 | ||
a40eb732 LP |
622 | /* Add a number of automatic dependencies useful for the |
623 | * majority of services. */ | |
624 | ||
463d0d15 | 625 | if (MANAGER_IS_SYSTEM(UNIT(s)->manager)) { |
cb4c247d LP |
626 | /* First, pull in the really early boot stuff, and |
627 | * require it, so that we fail if we can't acquire | |
628 | * it. */ | |
629 | ||
5a724170 | 630 | r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
cb4c247d LP |
631 | if (r < 0) |
632 | return r; | |
633 | } else { | |
634 | ||
635 | /* In the --user instance there's no sysinit.target, | |
636 | * in that case require basic.target instead. */ | |
637 | ||
35d8c19a | 638 | r = unit_add_dependency_by_name(UNIT(s), UNIT_REQUIRES, SPECIAL_BASIC_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
cb4c247d LP |
639 | if (r < 0) |
640 | return r; | |
641 | } | |
642 | ||
643 | /* Second, if the rest of the base system is in the same | |
644 | * transaction, order us after it, but do not pull it in or | |
645 | * even require it. */ | |
35d8c19a | 646 | r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_BASIC_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
fccd44ec KS |
647 | if (r < 0) |
648 | return r; | |
a40eb732 | 649 | |
cb4c247d | 650 | /* Third, add us in for normal shutdown. */ |
5a724170 | 651 | return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
a40eb732 LP |
652 | } |
653 | ||
4dfc092a LP |
654 | static void service_fix_output(Service *s) { |
655 | assert(s); | |
656 | ||
08f3be7a LP |
657 | /* If nothing has been explicitly configured, patch default output in. If input is socket/tty we avoid this |
658 | * however, since in that case we want output to default to the same place as we read input from. */ | |
4dfc092a LP |
659 | |
660 | if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT && | |
661 | s->exec_context.std_output == EXEC_OUTPUT_INHERIT && | |
662 | s->exec_context.std_input == EXEC_INPUT_NULL) | |
1124fe6f | 663 | s->exec_context.std_error = UNIT(s)->manager->default_std_error; |
4dfc092a LP |
664 | |
665 | if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT && | |
666 | s->exec_context.std_input == EXEC_INPUT_NULL) | |
1124fe6f | 667 | s->exec_context.std_output = UNIT(s)->manager->default_std_output; |
08f3be7a LP |
668 | |
669 | if (s->exec_context.std_input == EXEC_INPUT_NULL && | |
670 | s->exec_context.stdin_data_size > 0) | |
671 | s->exec_context.std_input = EXEC_INPUT_DATA; | |
4dfc092a LP |
672 | } |
673 | ||
45f06b34 LP |
674 | static int service_setup_bus_name(Service *s) { |
675 | int r; | |
676 | ||
677 | assert(s); | |
678 | ||
679 | if (!s->bus_name) | |
680 | return 0; | |
681 | ||
35d8c19a | 682 | r = unit_add_dependency_by_name(UNIT(s), UNIT_REQUIRES, SPECIAL_DBUS_SOCKET, true, UNIT_DEPENDENCY_FILE); |
222953e8 DR |
683 | if (r < 0) |
684 | return log_unit_error_errno(UNIT(s), r, "Failed to add dependency on " SPECIAL_DBUS_SOCKET ": %m"); | |
45f06b34 | 685 | |
a132bef0 | 686 | /* We always want to be ordered against dbus.socket if both are in the transaction. */ |
35d8c19a | 687 | r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_DBUS_SOCKET, true, UNIT_DEPENDENCY_FILE); |
45f06b34 | 688 | if (r < 0) |
92bed462 | 689 | return log_unit_error_errno(UNIT(s), r, "Failed to add dependency on " SPECIAL_DBUS_SOCKET ": %m"); |
45f06b34 LP |
690 | |
691 | r = unit_watch_bus_name(UNIT(s), s->bus_name); | |
692 | if (r == -EEXIST) | |
693 | return log_unit_error_errno(UNIT(s), r, "Two services allocated for the same bus name %s, refusing operation.", s->bus_name); | |
694 | if (r < 0) | |
695 | return log_unit_error_errno(UNIT(s), r, "Cannot watch bus name %s: %m", s->bus_name); | |
696 | ||
697 | return 0; | |
698 | } | |
699 | ||
8545f7ce LP |
700 | static int service_add_extras(Service *s) { |
701 | int r; | |
702 | ||
703 | assert(s); | |
704 | ||
705 | if (s->type == _SERVICE_TYPE_INVALID) { | |
706 | /* Figure out a type automatically */ | |
707 | if (s->bus_name) | |
708 | s->type = SERVICE_DBUS; | |
709 | else if (s->exec_command[SERVICE_EXEC_START]) | |
710 | s->type = SERVICE_SIMPLE; | |
711 | else | |
712 | s->type = SERVICE_ONESHOT; | |
713 | } | |
714 | ||
715 | /* Oneshot services have disabled start timeout by default */ | |
716 | if (s->type == SERVICE_ONESHOT && !s->start_timeout_defined) | |
36c16a7c | 717 | s->timeout_start_usec = USEC_INFINITY; |
8545f7ce LP |
718 | |
719 | service_fix_output(s); | |
720 | ||
721 | r = unit_patch_contexts(UNIT(s)); | |
722 | if (r < 0) | |
723 | return r; | |
724 | ||
725 | r = unit_add_exec_dependencies(UNIT(s), &s->exec_context); | |
726 | if (r < 0) | |
727 | return r; | |
728 | ||
d79200e2 | 729 | r = unit_set_default_slice(UNIT(s)); |
8545f7ce LP |
730 | if (r < 0) |
731 | return r; | |
732 | ||
4330dc03 AJ |
733 | /* If the service needs the notify socket, let's enable it automatically. */ |
734 | if (s->notify_access == NOTIFY_NONE && | |
735 | (s->type == SERVICE_NOTIFY || s->watchdog_usec > 0 || s->n_fd_store_max > 0)) | |
8545f7ce LP |
736 | s->notify_access = NOTIFY_MAIN; |
737 | ||
afcfaa69 LP |
738 | /* If no OOM policy was explicitly set, then default to the configure default OOM policy. Except when |
739 | * delegation is on, in that case it we assume the payload knows better what to do and can process | |
740 | * things in a more focussed way. */ | |
741 | if (s->oom_policy < 0) | |
742 | s->oom_policy = s->cgroup_context.delegate ? OOM_CONTINUE : UNIT(s)->manager->default_oom_policy; | |
743 | ||
744 | /* Let the kernel do the killing if that's requested. */ | |
745 | s->cgroup_context.memory_oom_group = s->oom_policy == OOM_KILL; | |
746 | ||
45f06b34 LP |
747 | r = service_add_default_dependencies(s); |
748 | if (r < 0) | |
749 | return r; | |
8545f7ce | 750 | |
45f06b34 LP |
751 | r = service_setup_bus_name(s); |
752 | if (r < 0) | |
753 | return r; | |
8545f7ce LP |
754 | |
755 | return 0; | |
756 | } | |
757 | ||
e537352b | 758 | static int service_load(Unit *u) { |
e537352b | 759 | Service *s = SERVICE(u); |
8bb2d17d | 760 | int r; |
e537352b LP |
761 | |
762 | assert(s); | |
1e2e8133 | 763 | |
5cb5a6ff | 764 | /* Load a .service file */ |
c2756a68 LP |
765 | r = unit_load_fragment(u); |
766 | if (r < 0) | |
5cb5a6ff LP |
767 | return r; |
768 | ||
23a177ef | 769 | /* Still nothing found? Then let's give up */ |
ac155bb8 | 770 | if (u->load_state == UNIT_STUB) |
23a177ef | 771 | return -ENOENT; |
034c6ed7 | 772 | |
23a177ef | 773 | /* This is a new unit? Then let's add in some extras */ |
ac155bb8 | 774 | if (u->load_state == UNIT_LOADED) { |
c2756a68 LP |
775 | |
776 | /* We were able to load something, then let's add in | |
777 | * the dropin directories. */ | |
778 | r = unit_load_dropin(u); | |
779 | if (r < 0) | |
780 | return r; | |
781 | ||
8545f7ce LP |
782 | /* This is a new unit? Then let's add in some |
783 | * extras */ | |
784 | r = service_add_extras(s); | |
598459ce LP |
785 | if (r < 0) |
786 | return r; | |
8e274523 LP |
787 | } |
788 | ||
243b1432 | 789 | return service_verify(s); |
034c6ed7 LP |
790 | } |
791 | ||
87f0e418 | 792 | static void service_dump(Unit *u, FILE *f, const char *prefix) { |
f2e18ef1 | 793 | char buf_restart[FORMAT_TIMESPAN_MAX], buf_start[FORMAT_TIMESPAN_MAX], buf_stop[FORMAT_TIMESPAN_MAX]; |
dc653bf4 | 794 | char buf_runtime[FORMAT_TIMESPAN_MAX], buf_watchdog[FORMAT_TIMESPAN_MAX], buf_abort[FORMAT_TIMESPAN_MAX]; |
5cb5a6ff | 795 | ServiceExecCommand c; |
87f0e418 | 796 | Service *s = SERVICE(u); |
47be870b | 797 | const char *prefix2; |
5cb5a6ff LP |
798 | |
799 | assert(s); | |
800 | ||
4c940960 | 801 | prefix = strempty(prefix); |
63c372cb | 802 | prefix2 = strjoina(prefix, "\t"); |
44d8db9e | 803 | |
5cb5a6ff | 804 | fprintf(f, |
81a2b7ce | 805 | "%sService State: %s\n" |
f42806df LP |
806 | "%sResult: %s\n" |
807 | "%sReload Result: %s\n" | |
81a2b7ce | 808 | "%sPermissionsStartOnly: %s\n" |
8e274523 | 809 | "%sRootDirectoryStartOnly: %s\n" |
02ee865a | 810 | "%sRemainAfterExit: %s\n" |
3185a36b | 811 | "%sGuessMainPID: %s\n" |
c952c6ec | 812 | "%sType: %s\n" |
2cf3143a | 813 | "%sRestart: %s\n" |
308d72dc | 814 | "%sNotifyAccess: %s\n" |
afcfaa69 LP |
815 | "%sNotifyState: %s\n" |
816 | "%sOOMPolicy: %s\n", | |
81a2b7ce | 817 | prefix, service_state_to_string(s->state), |
f42806df LP |
818 | prefix, service_result_to_string(s->result), |
819 | prefix, service_result_to_string(s->reload_result), | |
81a2b7ce | 820 | prefix, yes_no(s->permissions_start_only), |
8e274523 | 821 | prefix, yes_no(s->root_directory_start_only), |
02ee865a | 822 | prefix, yes_no(s->remain_after_exit), |
3185a36b | 823 | prefix, yes_no(s->guess_main_pid), |
c952c6ec | 824 | prefix, service_type_to_string(s->type), |
2cf3143a | 825 | prefix, service_restart_to_string(s->restart), |
308d72dc | 826 | prefix, notify_access_to_string(s->notify_access), |
afcfaa69 LP |
827 | prefix, notify_state_to_string(s->notify_state), |
828 | prefix, oom_policy_to_string(s->oom_policy)); | |
5cb5a6ff | 829 | |
70123e68 LP |
830 | if (s->control_pid > 0) |
831 | fprintf(f, | |
ccd06097 ZJS |
832 | "%sControl PID: "PID_FMT"\n", |
833 | prefix, s->control_pid); | |
70123e68 LP |
834 | |
835 | if (s->main_pid > 0) | |
836 | fprintf(f, | |
ccd06097 | 837 | "%sMain PID: "PID_FMT"\n" |
6dfa5494 LP |
838 | "%sMain PID Known: %s\n" |
839 | "%sMain PID Alien: %s\n", | |
ccd06097 | 840 | prefix, s->main_pid, |
6dfa5494 LP |
841 | prefix, yes_no(s->main_pid_known), |
842 | prefix, yes_no(s->main_pid_alien)); | |
70123e68 | 843 | |
034c6ed7 LP |
844 | if (s->pid_file) |
845 | fprintf(f, | |
846 | "%sPIDFile: %s\n", | |
847 | prefix, s->pid_file); | |
848 | ||
05e343b7 LP |
849 | if (s->bus_name) |
850 | fprintf(f, | |
851 | "%sBusName: %s\n" | |
852 | "%sBus Name Good: %s\n", | |
853 | prefix, s->bus_name, | |
854 | prefix, yes_no(s->bus_name_good)); | |
855 | ||
9dfb64f8 ZJS |
856 | if (UNIT_ISSET(s->accept_socket)) |
857 | fprintf(f, | |
858 | "%sAccept Socket: %s\n", | |
859 | prefix, UNIT_DEREF(s->accept_socket)->id); | |
860 | ||
c9d41699 YW |
861 | fprintf(f, |
862 | "%sRestartSec: %s\n" | |
863 | "%sTimeoutStartSec: %s\n" | |
864 | "%sTimeoutStopSec: %s\n" | |
dc653bf4 | 865 | "%sTimeoutAbortSec: %s\n" |
c9d41699 YW |
866 | "%sRuntimeMaxSec: %s\n" |
867 | "%sWatchdogSec: %s\n", | |
868 | prefix, format_timespan(buf_restart, sizeof(buf_restart), s->restart_usec, USEC_PER_SEC), | |
869 | prefix, format_timespan(buf_start, sizeof(buf_start), s->timeout_start_usec, USEC_PER_SEC), | |
870 | prefix, format_timespan(buf_stop, sizeof(buf_stop), s->timeout_stop_usec, USEC_PER_SEC), | |
dc653bf4 JK |
871 | prefix, s->timeout_abort_set |
872 | ? format_timespan(buf_abort, sizeof(buf_abort), s->timeout_abort_usec, USEC_PER_SEC) | |
873 | : "", | |
c9d41699 YW |
874 | prefix, format_timespan(buf_runtime, sizeof(buf_runtime), s->runtime_max_usec, USEC_PER_SEC), |
875 | prefix, format_timespan(buf_watchdog, sizeof(buf_watchdog), s->watchdog_usec, USEC_PER_SEC)); | |
876 | ||
4819ff03 | 877 | kill_context_dump(&s->kill_context, f, prefix); |
5cb5a6ff LP |
878 | exec_context_dump(&s->exec_context, f, prefix); |
879 | ||
e537352b | 880 | for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) { |
5cb5a6ff | 881 | |
44d8db9e LP |
882 | if (!s->exec_command[c]) |
883 | continue; | |
884 | ||
40d50879 | 885 | fprintf(f, "%s-> %s:\n", |
94f04347 | 886 | prefix, service_exec_command_to_string(c)); |
44d8db9e LP |
887 | |
888 | exec_command_dump_list(s->exec_command[c], f, prefix2); | |
5cb5a6ff | 889 | } |
44d8db9e | 890 | |
8c47c732 LP |
891 | if (s->status_text) |
892 | fprintf(f, "%sStatus Text: %s\n", | |
893 | prefix, s->status_text); | |
a354329f | 894 | |
ece174c5 | 895 | if (s->n_fd_store_max > 0) |
a354329f LP |
896 | fprintf(f, |
897 | "%sFile Descriptor Store Max: %u\n" | |
da6053d0 | 898 | "%sFile Descriptor Store Current: %zu\n", |
a354329f LP |
899 | prefix, s->n_fd_store_max, |
900 | prefix, s->n_fd_store); | |
18f573aa LP |
901 | |
902 | cgroup_context_dump(&s->cgroup_context, f, prefix); | |
5cb5a6ff LP |
903 | } |
904 | ||
db256aab LP |
905 | static int service_is_suitable_main_pid(Service *s, pid_t pid, int prio) { |
906 | Unit *owner; | |
907 | ||
908 | assert(s); | |
909 | assert(pid_is_valid(pid)); | |
910 | ||
911 | /* Checks whether the specified PID is suitable as main PID for this service. returns negative if not, 0 if the | |
912 | * PID is questionnable but should be accepted if the source of configuration is trusted. > 0 if the PID is | |
913 | * good */ | |
914 | ||
915 | if (pid == getpid_cached() || pid == 1) { | |
916 | log_unit_full(UNIT(s), prio, 0, "New main PID "PID_FMT" is the manager, refusing.", pid); | |
917 | return -EPERM; | |
918 | } | |
919 | ||
920 | if (pid == s->control_pid) { | |
921 | log_unit_full(UNIT(s), prio, 0, "New main PID "PID_FMT" is the control process, refusing.", pid); | |
922 | return -EPERM; | |
923 | } | |
924 | ||
925 | if (!pid_is_alive(pid)) { | |
926 | log_unit_full(UNIT(s), prio, 0, "New main PID "PID_FMT" does not exist or is a zombie.", pid); | |
927 | return -ESRCH; | |
928 | } | |
929 | ||
930 | owner = manager_get_unit_by_pid(UNIT(s)->manager, pid); | |
931 | if (owner == UNIT(s)) { | |
932 | log_unit_debug(UNIT(s), "New main PID "PID_FMT" belongs to service, we are happy.", pid); | |
933 | return 1; /* Yay, it's definitely a good PID */ | |
934 | } | |
935 | ||
936 | return 0; /* Hmm it's a suspicious PID, let's accept it if configuration source is trusted */ | |
937 | } | |
938 | ||
c5419d42 | 939 | static int service_load_pid_file(Service *s, bool may_warn) { |
db256aab | 940 | char procfs[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; |
73969ab6 | 941 | bool questionable_pid_file = false; |
7fd1b19b | 942 | _cleanup_free_ char *k = NULL; |
db256aab LP |
943 | _cleanup_close_ int fd = -1; |
944 | int r, prio; | |
5925dd3c | 945 | pid_t pid; |
034c6ed7 LP |
946 | |
947 | assert(s); | |
948 | ||
034c6ed7 | 949 | if (!s->pid_file) |
13230d5d | 950 | return -ENOENT; |
034c6ed7 | 951 | |
db256aab LP |
952 | prio = may_warn ? LOG_INFO : LOG_DEBUG; |
953 | ||
954 | fd = chase_symlinks(s->pid_file, NULL, CHASE_OPEN|CHASE_SAFE, NULL); | |
36c97dec FB |
955 | if (fd == -ENOLINK) { |
956 | log_unit_full(UNIT(s), LOG_DEBUG, fd, "Potentially unsafe symlink chain, will now retry with relaxed checks: %s", s->pid_file); | |
73969ab6 LP |
957 | |
958 | questionable_pid_file = true; | |
959 | ||
960 | fd = chase_symlinks(s->pid_file, NULL, CHASE_OPEN, NULL); | |
961 | } | |
db256aab LP |
962 | if (fd < 0) |
963 | return log_unit_full(UNIT(s), prio, fd, "Can't open PID file %s (yet?) after %s: %m", s->pid_file, service_state_to_string(s->state)); | |
964 | ||
965 | /* Let's read the PID file now that we chased it down. But we need to convert the O_PATH fd chase_symlinks() returned us into a proper fd first. */ | |
966 | xsprintf(procfs, "/proc/self/fd/%i", fd); | |
967 | r = read_one_line_file(procfs, &k); | |
968 | if (r < 0) | |
969 | return log_unit_error_errno(UNIT(s), r, "Can't convert PID files %s O_PATH file descriptor to proper file descriptor: %m", s->pid_file); | |
034c6ed7 | 970 | |
5925dd3c | 971 | r = parse_pid(k, &pid); |
db256aab LP |
972 | if (r < 0) |
973 | return log_unit_full(UNIT(s), prio, r, "Failed to parse PID from file %s: %m", s->pid_file); | |
974 | ||
975 | if (s->main_pid_known && pid == s->main_pid) | |
976 | return 0; | |
977 | ||
978 | r = service_is_suitable_main_pid(s, pid, prio); | |
979 | if (r < 0) | |
5925dd3c | 980 | return r; |
db256aab LP |
981 | if (r == 0) { |
982 | struct stat st; | |
406eaf93 | 983 | |
73969ab6 LP |
984 | if (questionable_pid_file) { |
985 | log_unit_error(UNIT(s), "Refusing to accept PID outside of service control group, acquired through unsafe symlink chain: %s", s->pid_file); | |
986 | return -EPERM; | |
987 | } | |
988 | ||
db256aab LP |
989 | /* Hmm, it's not clear if the new main PID is safe. Let's allow this if the PID file is owned by root */ |
990 | ||
991 | if (fstat(fd, &st) < 0) | |
992 | return log_unit_error_errno(UNIT(s), errno, "Failed to fstat() PID file O_PATH fd: %m"); | |
993 | ||
994 | if (st.st_uid != 0) { | |
995 | log_unit_error(UNIT(s), "New main PID "PID_FMT" does not belong to service, and PID file is not owned by root. Refusing.", pid); | |
996 | return -EPERM; | |
997 | } | |
998 | ||
999 | 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 |
1000 | } |
1001 | ||
db01f8b3 | 1002 | if (s->main_pid_known) { |
f2341e0a | 1003 | log_unit_debug(UNIT(s), "Main PID changing: "PID_FMT" -> "PID_FMT, s->main_pid, pid); |
8bb2d17d | 1004 | |
db01f8b3 MS |
1005 | service_unwatch_main_pid(s); |
1006 | s->main_pid_known = false; | |
3a111838 | 1007 | } else |
f2341e0a | 1008 | log_unit_debug(UNIT(s), "Main PID loaded: "PID_FMT, pid); |
db01f8b3 | 1009 | |
117dcc57 ZJS |
1010 | r = service_set_main_pid(s, pid); |
1011 | if (r < 0) | |
16f6025e LP |
1012 | return r; |
1013 | ||
f75f613d | 1014 | r = unit_watch_pid(UNIT(s), pid, false); |
e8b509d3 LP |
1015 | if (r < 0) /* FIXME: we need to do something here */ |
1016 | return log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" for service: %m", pid); | |
034c6ed7 | 1017 | |
db256aab | 1018 | return 1; |
034c6ed7 LP |
1019 | } |
1020 | ||
783e05d6 | 1021 | static void service_search_main_pid(Service *s) { |
efdb0237 | 1022 | pid_t pid = 0; |
4fbf50b3 LP |
1023 | int r; |
1024 | ||
1025 | assert(s); | |
1026 | ||
3185a36b LP |
1027 | /* If we know it anyway, don't ever fallback to unreliable |
1028 | * heuristics */ | |
4fbf50b3 | 1029 | if (s->main_pid_known) |
783e05d6 | 1030 | return; |
4fbf50b3 | 1031 | |
3185a36b | 1032 | if (!s->guess_main_pid) |
783e05d6 | 1033 | return; |
3185a36b | 1034 | |
4fbf50b3 LP |
1035 | assert(s->main_pid <= 0); |
1036 | ||
783e05d6 ZJS |
1037 | if (unit_search_main_pid(UNIT(s), &pid) < 0) |
1038 | return; | |
4fbf50b3 | 1039 | |
f2341e0a | 1040 | log_unit_debug(UNIT(s), "Main PID guessed: "PID_FMT, pid); |
783e05d6 ZJS |
1041 | if (service_set_main_pid(s, pid) < 0) |
1042 | return; | |
4fbf50b3 | 1043 | |
f75f613d | 1044 | r = unit_watch_pid(UNIT(s), pid, false); |
783e05d6 | 1045 | if (r < 0) |
4fbf50b3 | 1046 | /* FIXME: we need to do something here */ |
f2341e0a | 1047 | log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" from: %m", pid); |
4fbf50b3 LP |
1048 | } |
1049 | ||
034c6ed7 LP |
1050 | static void service_set_state(Service *s, ServiceState state) { |
1051 | ServiceState old_state; | |
e056b01d | 1052 | const UnitActiveState *table; |
842129f5 | 1053 | |
5cb5a6ff LP |
1054 | assert(s); |
1055 | ||
6fcbec6f LP |
1056 | if (s->state != state) |
1057 | bus_unit_send_pending_change_signal(UNIT(s), false); | |
1058 | ||
e056b01d LP |
1059 | table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
1060 | ||
034c6ed7 | 1061 | old_state = s->state; |
5cb5a6ff | 1062 | s->state = state; |
034c6ed7 | 1063 | |
3a111838 MS |
1064 | service_unwatch_pid_file(s); |
1065 | ||
842129f5 LP |
1066 | if (!IN_SET(state, |
1067 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
36c16a7c | 1068 | SERVICE_RUNNING, |
842129f5 | 1069 | SERVICE_RELOAD, |
c87700a1 | 1070 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
842129f5 LP |
1071 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL, |
1072 | SERVICE_AUTO_RESTART)) | |
718db961 | 1073 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
034c6ed7 | 1074 | |
842129f5 LP |
1075 | if (!IN_SET(state, |
1076 | SERVICE_START, SERVICE_START_POST, | |
1077 | SERVICE_RUNNING, SERVICE_RELOAD, | |
c87700a1 | 1078 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf108e55 | 1079 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
5e94833f | 1080 | service_unwatch_main_pid(s); |
867b3b7d LP |
1081 | s->main_command = NULL; |
1082 | } | |
034c6ed7 | 1083 | |
842129f5 LP |
1084 | if (!IN_SET(state, |
1085 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
1086 | SERVICE_RELOAD, | |
c87700a1 | 1087 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
842129f5 | 1088 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
5e94833f | 1089 | service_unwatch_control_pid(s); |
034c6ed7 | 1090 | s->control_command = NULL; |
a16e1123 | 1091 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; |
e537352b | 1092 | } |
034c6ed7 | 1093 | |
50be4f4a | 1094 | if (IN_SET(state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART)) { |
a911bb9a | 1095 | unit_unwatch_all_pids(UNIT(s)); |
50be4f4a LP |
1096 | unit_dequeue_rewatch_pids(UNIT(s)); |
1097 | } | |
a911bb9a | 1098 | |
842129f5 LP |
1099 | if (!IN_SET(state, |
1100 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
1101 | SERVICE_RUNNING, SERVICE_RELOAD, | |
c87700a1 | 1102 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
57614eb1 | 1103 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL) && |
5cc3985e | 1104 | !(state == SERVICE_DEAD && UNIT(s)->job)) |
4f2d528d LP |
1105 | service_close_socket_fd(s); |
1106 | ||
5686391b LP |
1107 | if (state != SERVICE_START) |
1108 | s->exec_fd_event_source = sd_event_source_unref(s->exec_fd_event_source); | |
1109 | ||
7596e9e1 | 1110 | if (!IN_SET(state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
a6927d7f MO |
1111 | service_stop_watchdog(s); |
1112 | ||
f6023656 LP |
1113 | /* For the inactive states unit_notify() will trim the cgroup, |
1114 | * but for exit we have to do that ourselves... */ | |
2c289ea8 | 1115 | if (state == SERVICE_EXITED && !MANAGER_IS_RELOADING(UNIT(s)->manager)) |
efdb0237 | 1116 | unit_prune_cgroup(UNIT(s)); |
f6023656 | 1117 | |
e537352b | 1118 | if (old_state != state) |
f2341e0a | 1119 | log_unit_debug(UNIT(s), "Changed %s -> %s", service_state_to_string(old_state), service_state_to_string(state)); |
acbb0225 | 1120 | |
2ad2e41a LP |
1121 | unit_notify(UNIT(s), table[old_state], table[state], |
1122 | (s->reload_result == SERVICE_SUCCESS ? 0 : UNIT_NOTIFY_RELOAD_FAILURE) | | |
1123 | (s->will_auto_restart ? UNIT_NOTIFY_WILL_AUTO_RESTART : 0)); | |
034c6ed7 LP |
1124 | } |
1125 | ||
36c16a7c LP |
1126 | static usec_t service_coldplug_timeout(Service *s) { |
1127 | assert(s); | |
1128 | ||
1129 | switch (s->deserialized_state) { | |
1130 | ||
1131 | case SERVICE_START_PRE: | |
1132 | case SERVICE_START: | |
1133 | case SERVICE_START_POST: | |
1134 | case SERVICE_RELOAD: | |
1135 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->timeout_start_usec); | |
1136 | ||
1137 | case SERVICE_RUNNING: | |
1138 | return usec_add(UNIT(s)->active_enter_timestamp.monotonic, s->runtime_max_usec); | |
1139 | ||
1140 | case SERVICE_STOP: | |
36c16a7c LP |
1141 | case SERVICE_STOP_SIGTERM: |
1142 | case SERVICE_STOP_SIGKILL: | |
1143 | case SERVICE_STOP_POST: | |
1144 | case SERVICE_FINAL_SIGTERM: | |
1145 | case SERVICE_FINAL_SIGKILL: | |
1146 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->timeout_stop_usec); | |
1147 | ||
dc653bf4 JK |
1148 | case SERVICE_STOP_WATCHDOG: |
1149 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, service_timeout_abort_usec(s)); | |
1150 | ||
36c16a7c LP |
1151 | case SERVICE_AUTO_RESTART: |
1152 | return usec_add(UNIT(s)->inactive_enter_timestamp.monotonic, s->restart_usec); | |
1153 | ||
1154 | default: | |
1155 | return USEC_INFINITY; | |
1156 | } | |
1157 | } | |
1158 | ||
be847e82 | 1159 | static int service_coldplug(Unit *u) { |
a16e1123 LP |
1160 | Service *s = SERVICE(u); |
1161 | int r; | |
1162 | ||
1163 | assert(s); | |
1164 | assert(s->state == SERVICE_DEAD); | |
1165 | ||
930d2838 LP |
1166 | if (s->deserialized_state == s->state) |
1167 | return 0; | |
6c12b52e | 1168 | |
36c16a7c LP |
1169 | r = service_arm_timer(s, service_coldplug_timeout(s)); |
1170 | if (r < 0) | |
1171 | return r; | |
a911bb9a | 1172 | |
930d2838 LP |
1173 | if (s->main_pid > 0 && |
1174 | pid_is_unwaited(s->main_pid) && | |
9acac212 | 1175 | (IN_SET(s->deserialized_state, |
930d2838 LP |
1176 | SERVICE_START, SERVICE_START_POST, |
1177 | SERVICE_RUNNING, SERVICE_RELOAD, | |
c87700a1 | 1178 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
930d2838 | 1179 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL))) { |
f75f613d | 1180 | r = unit_watch_pid(UNIT(s), s->main_pid, false); |
930d2838 LP |
1181 | if (r < 0) |
1182 | return r; | |
1183 | } | |
bb242b7b | 1184 | |
930d2838 LP |
1185 | if (s->control_pid > 0 && |
1186 | pid_is_unwaited(s->control_pid) && | |
1187 | IN_SET(s->deserialized_state, | |
1188 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
1189 | SERVICE_RELOAD, | |
c87700a1 | 1190 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
930d2838 | 1191 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
f75f613d | 1192 | r = unit_watch_pid(UNIT(s), s->control_pid, false); |
930d2838 LP |
1193 | if (r < 0) |
1194 | return r; | |
a16e1123 | 1195 | } |
92c1622e | 1196 | |
e8a565cb | 1197 | if (!IN_SET(s->deserialized_state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART)) { |
50be4f4a | 1198 | (void) unit_enqueue_rewatch_pids(u); |
29206d46 | 1199 | (void) unit_setup_dynamic_creds(u); |
e8a565cb YW |
1200 | (void) unit_setup_exec_runtime(u); |
1201 | } | |
29206d46 | 1202 | |
50be4f4a LP |
1203 | if (IN_SET(s->deserialized_state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
1204 | service_start_watchdog(s); | |
1205 | ||
3ebcd323 ZJS |
1206 | if (UNIT_ISSET(s->accept_socket)) { |
1207 | Socket* socket = SOCKET(UNIT_DEREF(s->accept_socket)); | |
1208 | ||
1209 | if (socket->max_connections_per_source > 0) { | |
1210 | SocketPeer *peer; | |
1211 | ||
1212 | /* Make a best-effort attempt at bumping the connection count */ | |
1213 | if (socket_acquire_peer(socket, s->socket_fd, &peer) > 0) { | |
1214 | socket_peer_unref(s->peer); | |
1215 | s->peer = peer; | |
1216 | } | |
1217 | } | |
1218 | } | |
1219 | ||
930d2838 | 1220 | service_set_state(s, s->deserialized_state); |
a16e1123 LP |
1221 | return 0; |
1222 | } | |
1223 | ||
25b583d7 LP |
1224 | static int service_collect_fds( |
1225 | Service *s, | |
1226 | int **fds, | |
1227 | char ***fd_names, | |
1228 | size_t *n_socket_fds, | |
1229 | size_t *n_storage_fds) { | |
4c47affc | 1230 | |
8dd4c05b | 1231 | _cleanup_strv_free_ char **rfd_names = NULL; |
a354329f | 1232 | _cleanup_free_ int *rfds = NULL; |
25b583d7 | 1233 | size_t rn_socket_fds = 0, rn_storage_fds = 0; |
4c47affc | 1234 | int r; |
44d8db9e LP |
1235 | |
1236 | assert(s); | |
1237 | assert(fds); | |
8dd4c05b | 1238 | assert(fd_names); |
9b141911 | 1239 | assert(n_socket_fds); |
25b583d7 | 1240 | assert(n_storage_fds); |
44d8db9e | 1241 | |
8dd4c05b | 1242 | if (s->socket_fd >= 0) { |
6cf6bbc2 | 1243 | |
8dd4c05b | 1244 | /* Pass the per-connection socket */ |
57020a3a | 1245 | |
8dd4c05b LP |
1246 | rfds = new(int, 1); |
1247 | if (!rfds) | |
1248 | return -ENOMEM; | |
1249 | rfds[0] = s->socket_fd; | |
57020a3a | 1250 | |
bea1a013 | 1251 | rfd_names = strv_new("connection"); |
8dd4c05b LP |
1252 | if (!rfd_names) |
1253 | return -ENOMEM; | |
44d8db9e | 1254 | |
4c47affc | 1255 | rn_socket_fds = 1; |
8dd4c05b LP |
1256 | } else { |
1257 | Iterator i; | |
eef85c4a | 1258 | void *v; |
8dd4c05b | 1259 | Unit *u; |
44d8db9e | 1260 | |
8dd4c05b | 1261 | /* Pass all our configured sockets for singleton services */ |
44d8db9e | 1262 | |
eef85c4a | 1263 | HASHMAP_FOREACH_KEY(v, u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) { |
8dd4c05b LP |
1264 | _cleanup_free_ int *cfds = NULL; |
1265 | Socket *sock; | |
1266 | int cn_fds; | |
44d8db9e | 1267 | |
8dd4c05b LP |
1268 | if (u->type != UNIT_SOCKET) |
1269 | continue; | |
44d8db9e | 1270 | |
8dd4c05b | 1271 | sock = SOCKET(u); |
a354329f | 1272 | |
8dd4c05b LP |
1273 | cn_fds = socket_collect_fds(sock, &cfds); |
1274 | if (cn_fds < 0) | |
1275 | return cn_fds; | |
44d8db9e | 1276 | |
8dd4c05b LP |
1277 | if (cn_fds <= 0) |
1278 | continue; | |
79c7626d | 1279 | |
8dd4c05b | 1280 | if (!rfds) { |
1cc6c93a | 1281 | rfds = TAKE_PTR(cfds); |
4c47affc | 1282 | rn_socket_fds = cn_fds; |
8dd4c05b LP |
1283 | } else { |
1284 | int *t; | |
1285 | ||
62d74c78 | 1286 | t = reallocarray(rfds, rn_socket_fds + cn_fds, sizeof(int)); |
8dd4c05b LP |
1287 | if (!t) |
1288 | return -ENOMEM; | |
1289 | ||
4c47affc | 1290 | memcpy(t + rn_socket_fds, cfds, cn_fds * sizeof(int)); |
8dd4c05b LP |
1291 | |
1292 | rfds = t; | |
4c47affc | 1293 | rn_socket_fds += cn_fds; |
8dd4c05b LP |
1294 | } |
1295 | ||
1296 | r = strv_extend_n(&rfd_names, socket_fdname(sock), cn_fds); | |
1297 | if (r < 0) | |
1298 | return r; | |
44d8db9e LP |
1299 | } |
1300 | } | |
1301 | ||
a354329f LP |
1302 | if (s->n_fd_store > 0) { |
1303 | ServiceFDStore *fs; | |
25b583d7 | 1304 | size_t n_fds; |
8dd4c05b | 1305 | char **nl; |
a354329f LP |
1306 | int *t; |
1307 | ||
62d74c78 | 1308 | t = reallocarray(rfds, rn_socket_fds + s->n_fd_store, sizeof(int)); |
a354329f LP |
1309 | if (!t) |
1310 | return -ENOMEM; | |
1311 | ||
1312 | rfds = t; | |
8dd4c05b | 1313 | |
62d74c78 | 1314 | nl = reallocarray(rfd_names, rn_socket_fds + s->n_fd_store + 1, sizeof(char *)); |
8dd4c05b LP |
1315 | if (!nl) |
1316 | return -ENOMEM; | |
1317 | ||
1318 | rfd_names = nl; | |
4c47affc | 1319 | n_fds = rn_socket_fds; |
8dd4c05b LP |
1320 | |
1321 | LIST_FOREACH(fd_store, fs, s->fd_store) { | |
4c47affc FB |
1322 | rfds[n_fds] = fs->fd; |
1323 | rfd_names[n_fds] = strdup(strempty(fs->fdname)); | |
1324 | if (!rfd_names[n_fds]) | |
8dd4c05b LP |
1325 | return -ENOMEM; |
1326 | ||
4c47affc FB |
1327 | rn_storage_fds++; |
1328 | n_fds++; | |
8dd4c05b LP |
1329 | } |
1330 | ||
4c47affc | 1331 | rfd_names[n_fds] = NULL; |
a354329f LP |
1332 | } |
1333 | ||
1cc6c93a YW |
1334 | *fds = TAKE_PTR(rfds); |
1335 | *fd_names = TAKE_PTR(rfd_names); | |
9b141911 | 1336 | *n_socket_fds = rn_socket_fds; |
4c47affc | 1337 | *n_storage_fds = rn_storage_fds; |
3e33402a | 1338 | |
4c47affc | 1339 | return 0; |
44d8db9e LP |
1340 | } |
1341 | ||
5686391b LP |
1342 | static int service_allocate_exec_fd_event_source( |
1343 | Service *s, | |
1344 | int fd, | |
1345 | sd_event_source **ret_event_source) { | |
1346 | ||
1347 | _cleanup_(sd_event_source_unrefp) sd_event_source *source = NULL; | |
1348 | int r; | |
1349 | ||
1350 | assert(s); | |
1351 | assert(fd >= 0); | |
1352 | assert(ret_event_source); | |
1353 | ||
1354 | r = sd_event_add_io(UNIT(s)->manager->event, &source, fd, 0, service_dispatch_exec_io, s); | |
1355 | if (r < 0) | |
1356 | return log_unit_error_errno(UNIT(s), r, "Failed to allocate exec_fd event source: %m"); | |
1357 | ||
1358 | /* This is a bit lower priority than SIGCHLD, as that carries a lot more interesting failure information */ | |
1359 | ||
1360 | r = sd_event_source_set_priority(source, SD_EVENT_PRIORITY_NORMAL-3); | |
1361 | if (r < 0) | |
1362 | return log_unit_error_errno(UNIT(s), r, "Failed to adjust priority of exec_fd event source: %m"); | |
1363 | ||
1364 | (void) sd_event_source_set_description(source, "service event_fd"); | |
1365 | ||
1366 | r = sd_event_source_set_io_fd_own(source, true); | |
1367 | if (r < 0) | |
1368 | return log_unit_error_errno(UNIT(s), r, "Failed to pass ownership of fd to event source: %m"); | |
1369 | ||
1370 | *ret_event_source = TAKE_PTR(source); | |
1371 | return 0; | |
1372 | } | |
1373 | ||
1374 | static int service_allocate_exec_fd( | |
1375 | Service *s, | |
1376 | sd_event_source **ret_event_source, | |
1377 | int* ret_exec_fd) { | |
1378 | ||
1379 | _cleanup_close_pair_ int p[2] = { -1, -1 }; | |
1380 | int r; | |
1381 | ||
1382 | assert(s); | |
1383 | assert(ret_event_source); | |
1384 | assert(ret_exec_fd); | |
1385 | ||
1386 | if (pipe2(p, O_CLOEXEC|O_NONBLOCK) < 0) | |
1387 | return log_unit_error_errno(UNIT(s), errno, "Failed to allocate exec_fd pipe: %m"); | |
1388 | ||
1389 | r = service_allocate_exec_fd_event_source(s, p[0], ret_event_source); | |
1390 | if (r < 0) | |
1391 | return r; | |
1392 | ||
1393 | p[0] = -1; | |
1394 | *ret_exec_fd = TAKE_FD(p[1]); | |
1395 | ||
1396 | return 0; | |
1397 | } | |
1398 | ||
6375bd20 JW |
1399 | static bool service_exec_needs_notify_socket(Service *s, ExecFlags flags) { |
1400 | assert(s); | |
1401 | ||
1402 | /* Notifications are accepted depending on the process and | |
1403 | * the access setting of the service: | |
1404 | * process: \ access: NONE MAIN EXEC ALL | |
1405 | * main no yes yes yes | |
1406 | * control no no yes yes | |
1407 | * other (forked) no no no yes */ | |
1408 | ||
1409 | if (flags & EXEC_IS_CONTROL) | |
1410 | /* A control process */ | |
1411 | return IN_SET(s->notify_access, NOTIFY_EXEC, NOTIFY_ALL); | |
1412 | ||
1413 | /* We only spawn main processes and control processes, so any | |
1414 | * process that is not a control process is a main process */ | |
1415 | return s->notify_access != NOTIFY_NONE; | |
1416 | } | |
1417 | ||
81a2b7ce LP |
1418 | static int service_spawn( |
1419 | Service *s, | |
1420 | ExecCommand *c, | |
21b2ce39 | 1421 | usec_t timeout, |
c39f1ce2 | 1422 | ExecFlags flags, |
81a2b7ce LP |
1423 | pid_t *_pid) { |
1424 | ||
b9c04eaf | 1425 | _cleanup_(exec_params_clear) ExecParameters exec_params = { |
c39f1ce2 LP |
1426 | .flags = flags, |
1427 | .stdin_fd = -1, | |
1428 | .stdout_fd = -1, | |
1429 | .stderr_fd = -1, | |
25b583d7 | 1430 | .exec_fd = -1, |
9fa95f85 | 1431 | }; |
3c7416b6 | 1432 | _cleanup_strv_free_ char **final_env = NULL, **our_env = NULL, **fd_names = NULL; |
5686391b | 1433 | _cleanup_(sd_event_source_unrefp) sd_event_source *exec_fd_source = NULL; |
25b583d7 | 1434 | size_t n_socket_fds = 0, n_storage_fds = 0, n_env = 0; |
5686391b | 1435 | _cleanup_close_ int exec_fd = -1; |
3c7416b6 LP |
1436 | _cleanup_free_ int *fds = NULL; |
1437 | pid_t pid; | |
8dd4c05b LP |
1438 | int r; |
1439 | ||
034c6ed7 LP |
1440 | assert(s); |
1441 | assert(c); | |
1442 | assert(_pid); | |
1443 | ||
78f93209 | 1444 | r = unit_prepare_exec(UNIT(s)); /* This realizes the cgroup, among other things */ |
3c7416b6 LP |
1445 | if (r < 0) |
1446 | return r; | |
1447 | ||
9c1a61ad LP |
1448 | if (flags & EXEC_IS_CONTROL) { |
1449 | /* If this is a control process, mask the permissions/chroot application if this is requested. */ | |
1450 | if (s->permissions_start_only) | |
1703fa41 | 1451 | exec_params.flags &= ~EXEC_APPLY_SANDBOXING; |
9c1a61ad LP |
1452 | if (s->root_directory_start_only) |
1453 | exec_params.flags &= ~EXEC_APPLY_CHROOT; | |
1454 | } | |
1455 | ||
c39f1ce2 | 1456 | if ((flags & EXEC_PASS_FDS) || |
6cf6bbc2 LP |
1457 | s->exec_context.std_input == EXEC_INPUT_SOCKET || |
1458 | s->exec_context.std_output == EXEC_OUTPUT_SOCKET || | |
1459 | s->exec_context.std_error == EXEC_OUTPUT_SOCKET) { | |
1460 | ||
25b583d7 | 1461 | r = service_collect_fds(s, &fds, &fd_names, &n_socket_fds, &n_storage_fds); |
8dd4c05b | 1462 | if (r < 0) |
36c16a7c | 1463 | return r; |
6cf6bbc2 | 1464 | |
25b583d7 | 1465 | log_unit_debug(UNIT(s), "Passing %zu fds to service", n_socket_fds + n_storage_fds); |
4f2d528d | 1466 | } |
44d8db9e | 1467 | |
5686391b LP |
1468 | if (!FLAGS_SET(flags, EXEC_IS_CONTROL) && s->type == SERVICE_EXEC) { |
1469 | assert(!s->exec_fd_event_source); | |
1470 | ||
1471 | r = service_allocate_exec_fd(s, &exec_fd_source, &exec_fd); | |
1472 | if (r < 0) | |
1473 | return r; | |
1474 | } | |
1475 | ||
36c16a7c LP |
1476 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), timeout)); |
1477 | if (r < 0) | |
1478 | return r; | |
034c6ed7 | 1479 | |
dcf3c3c3 | 1480 | our_env = new0(char*, 10); |
36c16a7c LP |
1481 | if (!our_env) |
1482 | return -ENOMEM; | |
c952c6ec | 1483 | |
6375bd20 | 1484 | if (service_exec_needs_notify_socket(s, flags)) |
36c16a7c LP |
1485 | if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) |
1486 | return -ENOMEM; | |
c952c6ec | 1487 | |
2105e76a | 1488 | if (s->main_pid > 0) |
36c16a7c LP |
1489 | if (asprintf(our_env + n_env++, "MAINPID="PID_FMT, s->main_pid) < 0) |
1490 | return -ENOMEM; | |
2105e76a | 1491 | |
c39f1ce2 | 1492 | if (MANAGER_IS_USER(UNIT(s)->manager)) |
df0ff127 | 1493 | if (asprintf(our_env + n_env++, "MANAGERPID="PID_FMT, getpid_cached()) < 0) |
36c16a7c | 1494 | return -ENOMEM; |
97ae63e2 | 1495 | |
dcf3c3c3 LP |
1496 | if (s->pid_file) |
1497 | if (asprintf(our_env + n_env++, "PIDFILE=%s", s->pid_file) < 0) | |
1498 | return -ENOMEM; | |
1499 | ||
8dd4c05b | 1500 | if (s->socket_fd >= 0) { |
3b1c5241 SL |
1501 | union sockaddr_union sa; |
1502 | socklen_t salen = sizeof(sa); | |
1503 | ||
f56e7bfe LP |
1504 | /* If this is a per-connection service instance, let's set $REMOTE_ADDR and $REMOTE_PORT to something |
1505 | * useful. Note that we do this only when we are still connected at this point in time, which we might | |
1506 | * very well not be. Hence we ignore all errors when retrieving peer information (as that might result | |
1507 | * in ENOTCONN), and just use whate we can use. */ | |
f2dbd059 | 1508 | |
f56e7bfe LP |
1509 | if (getpeername(s->socket_fd, &sa.sa, &salen) >= 0 && |
1510 | IN_SET(sa.sa.sa_family, AF_INET, AF_INET6, AF_VSOCK)) { | |
3b1c5241 | 1511 | |
3b1c5241 SL |
1512 | _cleanup_free_ char *addr = NULL; |
1513 | char *t; | |
882ac6e7 | 1514 | unsigned port; |
3b1c5241 SL |
1515 | |
1516 | r = sockaddr_pretty(&sa.sa, salen, true, false, &addr); | |
1517 | if (r < 0) | |
36c16a7c | 1518 | return r; |
3b1c5241 SL |
1519 | |
1520 | t = strappend("REMOTE_ADDR=", addr); | |
36c16a7c LP |
1521 | if (!t) |
1522 | return -ENOMEM; | |
3b1c5241 SL |
1523 | our_env[n_env++] = t; |
1524 | ||
882ac6e7 SH |
1525 | r = sockaddr_port(&sa.sa, &port); |
1526 | if (r < 0) | |
1527 | return r; | |
3b1c5241 | 1528 | |
36c16a7c LP |
1529 | if (asprintf(&t, "REMOTE_PORT=%u", port) < 0) |
1530 | return -ENOMEM; | |
3b1c5241 SL |
1531 | our_env[n_env++] = t; |
1532 | } | |
1533 | } | |
1534 | ||
136dc4c4 LP |
1535 | if (flags & EXEC_SETENV_RESULT) { |
1536 | if (asprintf(our_env + n_env++, "SERVICE_RESULT=%s", service_result_to_string(s->result)) < 0) | |
1537 | return -ENOMEM; | |
1538 | ||
1539 | if (s->main_exec_status.pid > 0 && | |
1540 | dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) { | |
1541 | if (asprintf(our_env + n_env++, "EXIT_CODE=%s", sigchld_code_to_string(s->main_exec_status.code)) < 0) | |
1542 | return -ENOMEM; | |
1543 | ||
1544 | if (s->main_exec_status.code == CLD_EXITED) | |
1545 | r = asprintf(our_env + n_env++, "EXIT_STATUS=%i", s->main_exec_status.status); | |
1546 | else | |
1547 | r = asprintf(our_env + n_env++, "EXIT_STATUS=%s", signal_to_string(s->main_exec_status.status)); | |
1548 | if (r < 0) | |
1549 | return -ENOMEM; | |
1550 | } | |
1551 | } | |
1552 | ||
1ad6e8b3 LP |
1553 | r = unit_set_exec_params(UNIT(s), &exec_params); |
1554 | if (r < 0) | |
1555 | return r; | |
3536f49e YW |
1556 | |
1557 | final_env = strv_env_merge(2, exec_params.environment, our_env, NULL); | |
36c16a7c LP |
1558 | if (!final_env) |
1559 | return -ENOMEM; | |
c952c6ec | 1560 | |
ac647978 LP |
1561 | /* System D-Bus needs nss-systemd disabled, so that we don't deadlock */ |
1562 | SET_FLAG(exec_params.flags, EXEC_NSS_BYPASS_BUS, | |
1563 | MANAGER_IS_SYSTEM(UNIT(s)->manager) && unit_has_name(UNIT(s), SPECIAL_DBUS_SERVICE)); | |
4ad49000 | 1564 | |
b9c04eaf | 1565 | strv_free_and_replace(exec_params.environment, final_env); |
9fa95f85 | 1566 | exec_params.fds = fds; |
8dd4c05b | 1567 | exec_params.fd_names = fd_names; |
9b141911 | 1568 | exec_params.n_socket_fds = n_socket_fds; |
25b583d7 | 1569 | exec_params.n_storage_fds = n_storage_fds; |
34b3f625 | 1570 | exec_params.watchdog_usec = service_get_watchdog_usec(s); |
a34ceba6 | 1571 | exec_params.selinux_context_net = s->socket_fd_selinux_context_net; |
9fa95f85 DM |
1572 | if (s->type == SERVICE_IDLE) |
1573 | exec_params.idle_pipe = UNIT(s)->manager->idle_pipe; | |
a34ceba6 LP |
1574 | exec_params.stdin_fd = s->stdin_fd; |
1575 | exec_params.stdout_fd = s->stdout_fd; | |
1576 | exec_params.stderr_fd = s->stderr_fd; | |
5686391b | 1577 | exec_params.exec_fd = exec_fd; |
9fa95f85 | 1578 | |
f2341e0a LP |
1579 | r = exec_spawn(UNIT(s), |
1580 | c, | |
9e2f7c11 | 1581 | &s->exec_context, |
9fa95f85 | 1582 | &exec_params, |
613b411c | 1583 | s->exec_runtime, |
29206d46 | 1584 | &s->dynamic_creds, |
9e2f7c11 | 1585 | &pid); |
9e2f7c11 | 1586 | if (r < 0) |
36c16a7c | 1587 | return r; |
034c6ed7 | 1588 | |
5686391b LP |
1589 | s->exec_fd_event_source = TAKE_PTR(exec_fd_source); |
1590 | s->exec_fd_hot = false; | |
1591 | ||
f75f613d FB |
1592 | r = unit_watch_pid(UNIT(s), pid, true); |
1593 | if (r < 0) | |
36c16a7c | 1594 | return r; |
034c6ed7 LP |
1595 | |
1596 | *_pid = pid; | |
1597 | ||
5cb5a6ff | 1598 | return 0; |
034c6ed7 LP |
1599 | } |
1600 | ||
80876c20 LP |
1601 | static int main_pid_good(Service *s) { |
1602 | assert(s); | |
1603 | ||
51894d70 | 1604 | /* Returns 0 if the pid is dead, > 0 if it is good, < 0 if we don't know */ |
80876c20 | 1605 | |
fc08079e | 1606 | /* If we know the pid file, then let's just check if it is |
80876c20 | 1607 | * still valid */ |
6dfa5494 LP |
1608 | if (s->main_pid_known) { |
1609 | ||
1610 | /* If it's an alien child let's check if it is still | |
1611 | * alive ... */ | |
62220cf7 | 1612 | if (s->main_pid_alien && s->main_pid > 0) |
9f5650ae | 1613 | return pid_is_alive(s->main_pid); |
6dfa5494 LP |
1614 | |
1615 | /* .. otherwise assume we'll get a SIGCHLD for it, | |
1616 | * which we really should wait for to collect exit | |
1617 | * status and code */ | |
80876c20 | 1618 | return s->main_pid > 0; |
6dfa5494 | 1619 | } |
80876c20 LP |
1620 | |
1621 | /* We don't know the pid */ | |
1622 | return -EAGAIN; | |
1623 | } | |
1624 | ||
019be286 | 1625 | static int control_pid_good(Service *s) { |
80876c20 LP |
1626 | assert(s); |
1627 | ||
07697d7e LP |
1628 | /* Returns 0 if the control PID is dead, > 0 if it is good. We never actually return < 0 here, but in order to |
1629 | * make this function as similar as possible to main_pid_good() and cgroup_good(), we pretend that < 0 also | |
1630 | * means: we can't figure it out. */ | |
1631 | ||
80876c20 LP |
1632 | return s->control_pid > 0; |
1633 | } | |
1634 | ||
1635 | static int cgroup_good(Service *s) { | |
1636 | int r; | |
1637 | ||
1638 | assert(s); | |
1639 | ||
07697d7e LP |
1640 | /* Returns 0 if the cgroup is empty or doesn't exist, > 0 if it is exists and is populated, < 0 if we can't |
1641 | * figure it out */ | |
1642 | ||
4ad49000 LP |
1643 | if (!UNIT(s)->cgroup_path) |
1644 | return 0; | |
1645 | ||
6f883237 | 1646 | r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, UNIT(s)->cgroup_path); |
117dcc57 | 1647 | if (r < 0) |
80876c20 LP |
1648 | return r; |
1649 | ||
b13ddbbc | 1650 | return r == 0; |
80876c20 LP |
1651 | } |
1652 | ||
a509f0e6 LP |
1653 | static bool service_shall_restart(Service *s) { |
1654 | assert(s); | |
1655 | ||
1656 | /* Don't restart after manual stops */ | |
1657 | if (s->forbid_restart) | |
1658 | return false; | |
1659 | ||
1660 | /* Never restart if this is configured as special exception */ | |
1661 | if (exit_status_set_test(&s->restart_prevent_status, s->main_exec_status.code, s->main_exec_status.status)) | |
1662 | return false; | |
1663 | ||
1664 | /* Restart if the exit code/status are configured as restart triggers */ | |
1665 | if (exit_status_set_test(&s->restart_force_status, s->main_exec_status.code, s->main_exec_status.status)) | |
1666 | return true; | |
1667 | ||
1668 | switch (s->restart) { | |
1669 | ||
1670 | case SERVICE_RESTART_NO: | |
1671 | return false; | |
1672 | ||
1673 | case SERVICE_RESTART_ALWAYS: | |
1674 | return true; | |
1675 | ||
1676 | case SERVICE_RESTART_ON_SUCCESS: | |
1677 | return s->result == SERVICE_SUCCESS; | |
1678 | ||
1679 | case SERVICE_RESTART_ON_FAILURE: | |
1680 | return s->result != SERVICE_SUCCESS; | |
1681 | ||
1682 | case SERVICE_RESTART_ON_ABNORMAL: | |
1683 | return !IN_SET(s->result, SERVICE_SUCCESS, SERVICE_FAILURE_EXIT_CODE); | |
1684 | ||
1685 | case SERVICE_RESTART_ON_WATCHDOG: | |
1686 | return s->result == SERVICE_FAILURE_WATCHDOG; | |
1687 | ||
1688 | case SERVICE_RESTART_ON_ABORT: | |
1689 | return IN_SET(s->result, SERVICE_FAILURE_SIGNAL, SERVICE_FAILURE_CORE_DUMP); | |
1690 | ||
1691 | default: | |
1692 | assert_not_reached("unknown restart setting"); | |
1693 | } | |
1694 | } | |
1695 | ||
deb4e708 MK |
1696 | static bool service_will_restart(Unit *u) { |
1697 | Service *s = SERVICE(u); | |
1698 | ||
53f47dfc YW |
1699 | assert(s); |
1700 | ||
deb4e708 MK |
1701 | if (s->will_auto_restart) |
1702 | return true; | |
53f47dfc YW |
1703 | if (s->state == SERVICE_AUTO_RESTART) |
1704 | return true; | |
1705 | if (!UNIT(s)->job) | |
1706 | return false; | |
1707 | if (UNIT(s)->job->type == JOB_START) | |
1708 | return true; | |
2ad2e41a | 1709 | |
53f47dfc YW |
1710 | return false; |
1711 | } | |
1712 | ||
f42806df | 1713 | static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) { |
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 | |
aac99f30 | 1726 | unit_log_result(UNIT(s), s->result == SERVICE_SUCCESS, service_result_to_string(s->result)); |
ed77d407 | 1727 | |
deb4e708 MK |
1728 | if (allow_restart && service_shall_restart(s)) |
1729 | s->will_auto_restart = true; | |
1730 | ||
7eb2a8a1 LP |
1731 | /* Make sure service_release_resources() doesn't destroy our FD store, while we are changing through |
1732 | * SERVICE_FAILED/SERVICE_DEAD before entering into SERVICE_AUTO_RESTART. */ | |
1733 | s->n_keep_fd_store ++; | |
1734 | ||
0c7f15b3 MS |
1735 | service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD); |
1736 | ||
deb4e708 MK |
1737 | if (s->will_auto_restart) { |
1738 | s->will_auto_restart = false; | |
034c6ed7 | 1739 | |
36c16a7c | 1740 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->restart_usec)); |
7eb2a8a1 LP |
1741 | if (r < 0) { |
1742 | s->n_keep_fd_store--; | |
034c6ed7 | 1743 | goto fail; |
7eb2a8a1 | 1744 | } |
034c6ed7 LP |
1745 | |
1746 | service_set_state(s, SERVICE_AUTO_RESTART); | |
7a0019d3 LP |
1747 | } else |
1748 | /* If we shan't restart, then flush out the restart counter. But don't do that immediately, so that the | |
1749 | * user can still introspect the counter. Do so on the next start. */ | |
1750 | s->flush_n_restarts = true; | |
034c6ed7 | 1751 | |
7eb2a8a1 LP |
1752 | /* The new state is in effect, let's decrease the fd store ref counter again. Let's also readd us to the GC |
1753 | * queue, so that the fd store is possibly gc'ed again */ | |
1754 | s->n_keep_fd_store--; | |
1755 | unit_add_to_gc_queue(UNIT(s)); | |
1756 | ||
f2341e0a | 1757 | /* The next restart might not be a manual stop, hence reset the flag indicating manual stops */ |
47342320 LP |
1758 | s->forbid_restart = false; |
1759 | ||
e66cf1a3 | 1760 | /* We want fresh tmpdirs in case service is started again immediately */ |
e8a565cb | 1761 | s->exec_runtime = exec_runtime_unref(s->exec_runtime, true); |
c17ec25e | 1762 | |
53f47dfc | 1763 | if (s->exec_context.runtime_directory_preserve_mode == EXEC_PRESERVE_NO || |
deb4e708 | 1764 | (s->exec_context.runtime_directory_preserve_mode == EXEC_PRESERVE_RESTART && !service_will_restart(UNIT(s)))) |
53f47dfc | 1765 | /* Also, remove the runtime directory */ |
3536f49e | 1766 | exec_context_destroy_runtime_directory(&s->exec_context, UNIT(s)->manager->prefix[EXEC_DIRECTORY_RUNTIME]); |
e66cf1a3 | 1767 | |
00d9ef85 LP |
1768 | /* Get rid of the IPC bits of the user */ |
1769 | unit_unref_uid_gid(UNIT(s), true); | |
1770 | ||
29206d46 LP |
1771 | /* Release the user, and destroy it if we are the only remaining owner */ |
1772 | dynamic_creds_destroy(&s->dynamic_creds); | |
1773 | ||
9285c9ff LN |
1774 | /* Try to delete the pid file. At this point it will be |
1775 | * out-of-date, and some software might be confused by it, so | |
1776 | * let's remove it. */ | |
1777 | if (s->pid_file) | |
fabab190 | 1778 | (void) unlink(s->pid_file); |
9285c9ff | 1779 | |
6f765baf LP |
1780 | /* Reset TTY ownership if necessary */ |
1781 | exec_context_revert_tty(&s->exec_context); | |
1782 | ||
034c6ed7 LP |
1783 | return; |
1784 | ||
1785 | fail: | |
f2341e0a | 1786 | log_unit_warning_errno(UNIT(s), r, "Failed to run install restart timer: %m"); |
f42806df | 1787 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); |
034c6ed7 LP |
1788 | } |
1789 | ||
f42806df | 1790 | static void service_enter_stop_post(Service *s, ServiceResult f) { |
034c6ed7 LP |
1791 | int r; |
1792 | assert(s); | |
1793 | ||
a0fef983 | 1794 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1795 | s->result = f; |
034c6ed7 | 1796 | |
5e94833f | 1797 | service_unwatch_control_pid(s); |
50be4f4a | 1798 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
5e94833f | 1799 | |
117dcc57 ZJS |
1800 | s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST]; |
1801 | if (s->control_command) { | |
867b3b7d LP |
1802 | s->control_command_id = SERVICE_EXEC_STOP_POST; |
1803 | ||
ecedd90f LP |
1804 | r = service_spawn(s, |
1805 | s->control_command, | |
21b2ce39 | 1806 | s->timeout_stop_usec, |
78f93209 | 1807 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_IS_CONTROL|EXEC_SETENV_RESULT|EXEC_CONTROL_CGROUP, |
ecedd90f LP |
1808 | &s->control_pid); |
1809 | if (r < 0) | |
034c6ed7 LP |
1810 | goto fail; |
1811 | ||
80876c20 LP |
1812 | service_set_state(s, SERVICE_STOP_POST); |
1813 | } else | |
ac84d1fb | 1814 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
1815 | |
1816 | return; | |
1817 | ||
1818 | fail: | |
f2341e0a | 1819 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop-post' task: %m"); |
f42806df | 1820 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1821 | } |
1822 | ||
4940c0b0 LP |
1823 | static int state_to_kill_operation(ServiceState state) { |
1824 | switch (state) { | |
1825 | ||
c87700a1 AZ |
1826 | case SERVICE_STOP_WATCHDOG: |
1827 | return KILL_WATCHDOG; | |
4940c0b0 LP |
1828 | |
1829 | case SERVICE_STOP_SIGTERM: | |
1830 | case SERVICE_FINAL_SIGTERM: | |
1831 | return KILL_TERMINATE; | |
1832 | ||
1833 | case SERVICE_STOP_SIGKILL: | |
1834 | case SERVICE_FINAL_SIGKILL: | |
1835 | return KILL_KILL; | |
1836 | ||
1837 | default: | |
1838 | return _KILL_OPERATION_INVALID; | |
1839 | } | |
1840 | } | |
1841 | ||
f42806df | 1842 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) { |
034c6ed7 | 1843 | int r; |
034c6ed7 LP |
1844 | |
1845 | assert(s); | |
1846 | ||
a0fef983 | 1847 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1848 | s->result = f; |
034c6ed7 | 1849 | |
50be4f4a LP |
1850 | /* Before sending any signal, make sure we track all members of this cgroup */ |
1851 | (void) unit_watch_all_pids(UNIT(s)); | |
1852 | ||
1853 | /* Also, enqueue a job that we recheck all our PIDs a bit later, given that it's likely some processes have | |
1854 | * died now */ | |
1855 | (void) unit_enqueue_rewatch_pids(UNIT(s)); | |
a911bb9a | 1856 | |
cd2086fe LP |
1857 | r = unit_kill_context( |
1858 | UNIT(s), | |
1859 | &s->kill_context, | |
4940c0b0 | 1860 | state_to_kill_operation(state), |
cd2086fe LP |
1861 | s->main_pid, |
1862 | s->control_pid, | |
1863 | s->main_pid_alien); | |
1864 | if (r < 0) | |
1865 | goto fail; | |
034c6ed7 | 1866 | |
cd2086fe | 1867 | if (r > 0) { |
dc653bf4 JK |
1868 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), |
1869 | state == SERVICE_STOP_WATCHDOG ? service_timeout_abort_usec(s) : s->timeout_stop_usec)); | |
36c16a7c LP |
1870 | if (r < 0) |
1871 | goto fail; | |
d6ea93e3 | 1872 | |
80876c20 | 1873 | service_set_state(s, state); |
c87700a1 | 1874 | } else if (IN_SET(state, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM) && s->kill_context.send_sigkill) |
ac84d1fb | 1875 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_SUCCESS); |
c87700a1 | 1876 | else if (IN_SET(state, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 1877 | service_enter_stop_post(s, SERVICE_SUCCESS); |
1db0db4b | 1878 | else if (state == SERVICE_FINAL_SIGTERM && s->kill_context.send_sigkill) |
ac84d1fb | 1879 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_SUCCESS); |
80876c20 | 1880 | else |
f42806df | 1881 | service_enter_dead(s, SERVICE_SUCCESS, true); |
034c6ed7 LP |
1882 | |
1883 | return; | |
1884 | ||
1885 | fail: | |
f2341e0a | 1886 | log_unit_warning_errno(UNIT(s), r, "Failed to kill processes: %m"); |
034c6ed7 | 1887 | |
c87700a1 | 1888 | if (IN_SET(state, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 1889 | service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES); |
034c6ed7 | 1890 | else |
f42806df | 1891 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
034c6ed7 LP |
1892 | } |
1893 | ||
308d72dc LP |
1894 | static void service_enter_stop_by_notify(Service *s) { |
1895 | assert(s); | |
1896 | ||
50be4f4a | 1897 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
308d72dc | 1898 | |
36c16a7c | 1899 | service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_stop_usec)); |
308d72dc | 1900 | |
6041a7ee MS |
1901 | /* The service told us it's stopping, so it's as if we SIGTERM'd it. */ |
1902 | service_set_state(s, SERVICE_STOP_SIGTERM); | |
308d72dc LP |
1903 | } |
1904 | ||
f42806df | 1905 | static void service_enter_stop(Service *s, ServiceResult f) { |
034c6ed7 | 1906 | int r; |
5925dd3c | 1907 | |
034c6ed7 LP |
1908 | assert(s); |
1909 | ||
a0fef983 | 1910 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1911 | s->result = f; |
034c6ed7 | 1912 | |
5e94833f | 1913 | service_unwatch_control_pid(s); |
50be4f4a | 1914 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
5e94833f | 1915 | |
117dcc57 ZJS |
1916 | s->control_command = s->exec_command[SERVICE_EXEC_STOP]; |
1917 | if (s->control_command) { | |
867b3b7d LP |
1918 | s->control_command_id = SERVICE_EXEC_STOP; |
1919 | ||
ecedd90f LP |
1920 | r = service_spawn(s, |
1921 | s->control_command, | |
21b2ce39 | 1922 | s->timeout_stop_usec, |
78f93209 | 1923 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_SETENV_RESULT|EXEC_CONTROL_CGROUP, |
ecedd90f LP |
1924 | &s->control_pid); |
1925 | if (r < 0) | |
034c6ed7 LP |
1926 | goto fail; |
1927 | ||
80876c20 LP |
1928 | service_set_state(s, SERVICE_STOP); |
1929 | } else | |
f42806df | 1930 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
1931 | |
1932 | return; | |
1933 | ||
1934 | fail: | |
f2341e0a | 1935 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop' task: %m"); |
f42806df | 1936 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
1937 | } |
1938 | ||
957c3cf9 LP |
1939 | static bool service_good(Service *s) { |
1940 | int main_pid_ok; | |
1941 | assert(s); | |
1942 | ||
1943 | if (s->type == SERVICE_DBUS && !s->bus_name_good) | |
1944 | return false; | |
1945 | ||
1946 | main_pid_ok = main_pid_good(s); | |
1947 | if (main_pid_ok > 0) /* It's alive */ | |
1948 | return true; | |
1949 | if (main_pid_ok == 0) /* It's dead */ | |
1950 | return false; | |
1951 | ||
1952 | /* OK, we don't know anything about the main PID, maybe | |
1953 | * because there is none. Let's check the control group | |
1954 | * instead. */ | |
1955 | ||
1956 | return cgroup_good(s) != 0; | |
1957 | } | |
1958 | ||
f42806df | 1959 | static void service_enter_running(Service *s, ServiceResult f) { |
80876c20 LP |
1960 | assert(s); |
1961 | ||
a0fef983 | 1962 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1963 | s->result = f; |
80876c20 | 1964 | |
089b64d5 LP |
1965 | service_unwatch_control_pid(s); |
1966 | ||
ec5b1452 LP |
1967 | if (s->result != SERVICE_SUCCESS) |
1968 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); | |
1969 | else if (service_good(s)) { | |
308d72dc | 1970 | |
ec5b1452 | 1971 | /* If there are any queued up sd_notify() notifications, process them now */ |
308d72dc LP |
1972 | if (s->notify_state == NOTIFY_RELOADING) |
1973 | service_enter_reload_by_notify(s); | |
1974 | else if (s->notify_state == NOTIFY_STOPPING) | |
1975 | service_enter_stop_by_notify(s); | |
36c16a7c | 1976 | else { |
308d72dc | 1977 | service_set_state(s, SERVICE_RUNNING); |
36c16a7c LP |
1978 | service_arm_timer(s, usec_add(UNIT(s)->active_enter_timestamp.monotonic, s->runtime_max_usec)); |
1979 | } | |
308d72dc | 1980 | |
ec5b1452 | 1981 | } else if (s->remain_after_exit) |
80876c20 LP |
1982 | service_set_state(s, SERVICE_EXITED); |
1983 | else | |
f42806df | 1984 | service_enter_stop(s, SERVICE_SUCCESS); |
80876c20 LP |
1985 | } |
1986 | ||
034c6ed7 LP |
1987 | static void service_enter_start_post(Service *s) { |
1988 | int r; | |
1989 | assert(s); | |
1990 | ||
5e94833f | 1991 | service_unwatch_control_pid(s); |
842129f5 | 1992 | service_reset_watchdog(s); |
bb242b7b | 1993 | |
117dcc57 ZJS |
1994 | s->control_command = s->exec_command[SERVICE_EXEC_START_POST]; |
1995 | if (s->control_command) { | |
867b3b7d LP |
1996 | s->control_command_id = SERVICE_EXEC_START_POST; |
1997 | ||
ecedd90f LP |
1998 | r = service_spawn(s, |
1999 | s->control_command, | |
21b2ce39 | 2000 | s->timeout_start_usec, |
78f93209 | 2001 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_CONTROL_CGROUP, |
ecedd90f LP |
2002 | &s->control_pid); |
2003 | if (r < 0) | |
034c6ed7 LP |
2004 | goto fail; |
2005 | ||
80876c20 LP |
2006 | service_set_state(s, SERVICE_START_POST); |
2007 | } else | |
f42806df | 2008 | service_enter_running(s, SERVICE_SUCCESS); |
034c6ed7 LP |
2009 | |
2010 | return; | |
2011 | ||
2012 | fail: | |
f2341e0a | 2013 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-post' task: %m"); |
f42806df | 2014 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
2015 | } |
2016 | ||
e9a4f676 | 2017 | static void service_kill_control_process(Service *s) { |
a6951a50 | 2018 | int r; |
4ad49000 | 2019 | |
a6951a50 LP |
2020 | assert(s); |
2021 | ||
e9a4f676 LP |
2022 | if (s->control_pid <= 0) |
2023 | return; | |
4ad49000 | 2024 | |
e9a4f676 LP |
2025 | r = kill_and_sigcont(s->control_pid, SIGKILL); |
2026 | if (r < 0) { | |
2027 | _cleanup_free_ char *comm = NULL; | |
a6951a50 | 2028 | |
e9a4f676 | 2029 | (void) get_process_comm(s->control_pid, &comm); |
a6951a50 | 2030 | |
e9a4f676 LP |
2031 | log_unit_debug_errno(UNIT(s), r, "Failed to kill control process " PID_FMT " (%s), ignoring: %m", |
2032 | s->control_pid, strna(comm)); | |
a6951a50 | 2033 | } |
4ad49000 LP |
2034 | } |
2035 | ||
c53d2d54 DB |
2036 | static int service_adverse_to_leftover_processes(Service *s) { |
2037 | assert(s); | |
2038 | ||
2039 | /* KillMode=mixed and control group are used to indicate that all process should be killed off. | |
2040 | * SendSIGKILL is used for services that require a clean shutdown. These are typically database | |
2041 | * service where a SigKilled process would result in a lengthy recovery and who's shutdown or | |
2042 | * startup time is quite variable (so Timeout settings aren't of use). | |
2043 | * | |
2044 | * Here we take these two factors and refuse to start a service if there are existing processes | |
2045 | * within a control group. Databases, while generally having some protection against multiple | |
2046 | * instances running, lets not stress the rigor of these. Also ExecStartPre parts of the service | |
2047 | * aren't as rigoriously written to protect aganst against multiple use. */ | |
2048 | if (unit_warn_leftover_processes(UNIT(s)) && | |
2049 | IN_SET(s->kill_context.kill_mode, KILL_MIXED, KILL_CONTROL_GROUP) && | |
2050 | !s->kill_context.send_sigkill) { | |
2051 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(EBUSY), "Will not start SendSIGKILL=no service of type KillMode=control-group or mixed while processes exist"); | |
2052 | } | |
2053 | return 0; | |
2054 | } | |
2055 | ||
034c6ed7 | 2056 | static void service_enter_start(Service *s) { |
4ad49000 | 2057 | ExecCommand *c; |
36c16a7c | 2058 | usec_t timeout; |
034c6ed7 LP |
2059 | pid_t pid; |
2060 | int r; | |
2061 | ||
2062 | assert(s); | |
2063 | ||
41efeaec LP |
2064 | service_unwatch_control_pid(s); |
2065 | service_unwatch_main_pid(s); | |
80876c20 | 2066 | |
c53d2d54 DB |
2067 | r = service_adverse_to_leftover_processes(s); |
2068 | if (r < 0) | |
2069 | goto fail; | |
a4634b21 | 2070 | |
867b3b7d LP |
2071 | if (s->type == SERVICE_FORKING) { |
2072 | s->control_command_id = SERVICE_EXEC_START; | |
2073 | c = s->control_command = s->exec_command[SERVICE_EXEC_START]; | |
2074 | ||
2075 | s->main_command = NULL; | |
2076 | } else { | |
2077 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
2078 | s->control_command = NULL; | |
2079 | ||
2080 | c = s->main_command = s->exec_command[SERVICE_EXEC_START]; | |
2081 | } | |
34e9ba66 | 2082 | |
96fb8242 | 2083 | if (!c) { |
47fffb35 LP |
2084 | if (s->type != SERVICE_ONESHOT) { |
2085 | /* There's no command line configured for the main command? Hmm, that is strange. This can only | |
2086 | * happen if the configuration changes at runtime. In this case, let's enter a failure | |
2087 | * state. */ | |
b8b846d7 | 2088 | log_unit_error(UNIT(s), "There's no 'start' task anymore we could start."); |
47fffb35 LP |
2089 | r = -ENXIO; |
2090 | goto fail; | |
2091 | } | |
2092 | ||
ef5ae8e7 ZJS |
2093 | /* We force a fake state transition here. Otherwise, the unit would go directly from |
2094 | * SERVICE_DEAD to SERVICE_DEAD without SERVICE_ACTIVATING or SERVICE_ACTIVE | |
2095 | * inbetween. This way we can later trigger actions that depend on the state | |
2096 | * transition, including SuccessAction=. */ | |
2097 | service_set_state(s, SERVICE_START); | |
2098 | ||
96fb8242 LP |
2099 | service_enter_start_post(s); |
2100 | return; | |
2101 | } | |
2102 | ||
36c16a7c LP |
2103 | if (IN_SET(s->type, SERVICE_SIMPLE, SERVICE_IDLE)) |
2104 | /* For simple + idle this is the main process. We don't apply any timeout here, but | |
2105 | * service_enter_running() will later apply the .runtime_max_usec timeout. */ | |
2106 | timeout = USEC_INFINITY; | |
2107 | else | |
2108 | timeout = s->timeout_start_usec; | |
2109 | ||
ecedd90f LP |
2110 | r = service_spawn(s, |
2111 | c, | |
36c16a7c | 2112 | timeout, |
1703fa41 | 2113 | EXEC_PASS_FDS|EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_SET_WATCHDOG, |
ecedd90f LP |
2114 | &pid); |
2115 | if (r < 0) | |
034c6ed7 LP |
2116 | goto fail; |
2117 | ||
36c16a7c | 2118 | if (IN_SET(s->type, SERVICE_SIMPLE, SERVICE_IDLE)) { |
034c6ed7 LP |
2119 | /* For simple services we immediately start |
2120 | * the START_POST binaries. */ | |
2121 | ||
5925dd3c | 2122 | service_set_main_pid(s, pid); |
034c6ed7 LP |
2123 | service_enter_start_post(s); |
2124 | ||
2125 | } else if (s->type == SERVICE_FORKING) { | |
2126 | ||
2127 | /* For forking services we wait until the start | |
2128 | * process exited. */ | |
2129 | ||
e55224ca | 2130 | s->control_pid = pid; |
80876c20 LP |
2131 | service_set_state(s, SERVICE_START); |
2132 | ||
5686391b | 2133 | } else if (IN_SET(s->type, SERVICE_ONESHOT, SERVICE_DBUS, SERVICE_NOTIFY, SERVICE_EXEC)) { |
7d55e835 | 2134 | |
5686391b | 2135 | /* For oneshot services we wait until the start process exited, too, but it is our main process. */ |
7d55e835 | 2136 | |
5686391b LP |
2137 | /* For D-Bus services we know the main pid right away, but wait for the bus name to appear on the |
2138 | * bus. 'notify' and 'exec' services are similar. */ | |
05e343b7 | 2139 | |
5925dd3c | 2140 | service_set_main_pid(s, pid); |
80876c20 | 2141 | service_set_state(s, SERVICE_START); |
034c6ed7 LP |
2142 | } else |
2143 | assert_not_reached("Unknown service type"); | |
2144 | ||
2145 | return; | |
2146 | ||
2147 | fail: | |
f2341e0a | 2148 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start' task: %m"); |
c3fda31d | 2149 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
2150 | } |
2151 | ||
2152 | static void service_enter_start_pre(Service *s) { | |
2153 | int r; | |
2154 | ||
2155 | assert(s); | |
2156 | ||
5e94833f LP |
2157 | service_unwatch_control_pid(s); |
2158 | ||
117dcc57 ZJS |
2159 | s->control_command = s->exec_command[SERVICE_EXEC_START_PRE]; |
2160 | if (s->control_command) { | |
8f53a7b8 | 2161 | |
c53d2d54 DB |
2162 | r = service_adverse_to_leftover_processes(s); |
2163 | if (r < 0) | |
2164 | goto fail; | |
a4634b21 | 2165 | |
867b3b7d LP |
2166 | s->control_command_id = SERVICE_EXEC_START_PRE; |
2167 | ||
ecedd90f LP |
2168 | r = service_spawn(s, |
2169 | s->control_command, | |
21b2ce39 | 2170 | s->timeout_start_usec, |
1703fa41 | 2171 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_APPLY_TTY_STDIN, |
ecedd90f LP |
2172 | &s->control_pid); |
2173 | if (r < 0) | |
034c6ed7 LP |
2174 | goto fail; |
2175 | ||
80876c20 LP |
2176 | service_set_state(s, SERVICE_START_PRE); |
2177 | } else | |
034c6ed7 LP |
2178 | service_enter_start(s); |
2179 | ||
2180 | return; | |
2181 | ||
2182 | fail: | |
f2341e0a | 2183 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-pre' task: %m"); |
f42806df | 2184 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
034c6ed7 LP |
2185 | } |
2186 | ||
2187 | static void service_enter_restart(Service *s) { | |
4afd3348 | 2188 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
034c6ed7 | 2189 | int r; |
398ef8ba | 2190 | |
034c6ed7 LP |
2191 | assert(s); |
2192 | ||
a8bb2e65 LP |
2193 | if (UNIT(s)->job && UNIT(s)->job->type == JOB_STOP) { |
2194 | /* Don't restart things if we are going down anyway */ | |
f2341e0a | 2195 | log_unit_info(UNIT(s), "Stop job pending for unit, delaying automatic restart."); |
2edfa366 | 2196 | |
36c16a7c | 2197 | r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->restart_usec)); |
a8bb2e65 | 2198 | if (r < 0) |
2edfa366 | 2199 | goto fail; |
feae8adb DW |
2200 | |
2201 | return; | |
2edfa366 LP |
2202 | } |
2203 | ||
48bb5876 DW |
2204 | /* Any units that are bound to this service must also be |
2205 | * restarted. We use JOB_RESTART (instead of the more obvious | |
2206 | * JOB_START) here so that those dependency jobs will be added | |
2207 | * as well. */ | |
50cbaba4 | 2208 | r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_REPLACE, NULL, &error, NULL); |
48bb5876 | 2209 | if (r < 0) |
034c6ed7 LP |
2210 | goto fail; |
2211 | ||
7a0019d3 LP |
2212 | /* Count the jobs we enqueue for restarting. This counter is maintained as long as the unit isn't fully |
2213 | * stopped, i.e. as long as it remains up or remains in auto-start states. The use can reset the counter | |
2214 | * explicitly however via the usual "systemctl reset-failure" logic. */ | |
2215 | s->n_restarts ++; | |
2216 | s->flush_n_restarts = false; | |
2217 | ||
2218 | log_struct(LOG_INFO, | |
2219 | "MESSAGE_ID=" SD_MESSAGE_UNIT_RESTART_SCHEDULED_STR, | |
2220 | LOG_UNIT_ID(UNIT(s)), | |
f1c50bec | 2221 | LOG_UNIT_INVOCATION_ID(UNIT(s)), |
7a0019d3 | 2222 | LOG_UNIT_MESSAGE(UNIT(s), "Scheduled restart job, restart counter is at %u.", s->n_restarts), |
a1230ff9 | 2223 | "N_RESTARTS=%u", s->n_restarts); |
7a0019d3 LP |
2224 | |
2225 | /* Notify clients about changed restart counter */ | |
2226 | unit_add_to_dbus_queue(UNIT(s)); | |
2227 | ||
a8bb2e65 LP |
2228 | /* Note that we stay in the SERVICE_AUTO_RESTART state here, |
2229 | * it will be canceled as part of the service_stop() call that | |
2230 | * is executed as part of JOB_RESTART. */ | |
2231 | ||
034c6ed7 LP |
2232 | return; |
2233 | ||
2234 | fail: | |
f2341e0a | 2235 | log_unit_warning(UNIT(s), "Failed to schedule restart job: %s", bus_error_message(&error, -r)); |
f42806df | 2236 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); |
034c6ed7 LP |
2237 | } |
2238 | ||
308d72dc | 2239 | static void service_enter_reload_by_notify(Service *s) { |
15d167f8 JW |
2240 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
2241 | int r; | |
2242 | ||
308d72dc LP |
2243 | assert(s); |
2244 | ||
36c16a7c | 2245 | service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_start_usec)); |
308d72dc | 2246 | service_set_state(s, SERVICE_RELOAD); |
15d167f8 JW |
2247 | |
2248 | /* service_enter_reload_by_notify is never called during a reload, thus no loops are possible. */ | |
2249 | r = manager_propagate_reload(UNIT(s)->manager, UNIT(s), JOB_FAIL, &error); | |
2250 | if (r < 0) | |
2251 | log_unit_warning(UNIT(s), "Failed to schedule propagation of reload: %s", bus_error_message(&error, -r)); | |
308d72dc LP |
2252 | } |
2253 | ||
034c6ed7 LP |
2254 | static void service_enter_reload(Service *s) { |
2255 | int r; | |
2256 | ||
2257 | assert(s); | |
2258 | ||
5e94833f | 2259 | service_unwatch_control_pid(s); |
95c906ae | 2260 | s->reload_result = SERVICE_SUCCESS; |
5e94833f | 2261 | |
117dcc57 ZJS |
2262 | s->control_command = s->exec_command[SERVICE_EXEC_RELOAD]; |
2263 | if (s->control_command) { | |
867b3b7d LP |
2264 | s->control_command_id = SERVICE_EXEC_RELOAD; |
2265 | ||
ecedd90f LP |
2266 | r = service_spawn(s, |
2267 | s->control_command, | |
21b2ce39 | 2268 | s->timeout_start_usec, |
78f93209 | 2269 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_CONTROL_CGROUP, |
ecedd90f LP |
2270 | &s->control_pid); |
2271 | if (r < 0) | |
034c6ed7 LP |
2272 | goto fail; |
2273 | ||
80876c20 LP |
2274 | service_set_state(s, SERVICE_RELOAD); |
2275 | } else | |
f42806df | 2276 | service_enter_running(s, SERVICE_SUCCESS); |
034c6ed7 LP |
2277 | |
2278 | return; | |
2279 | ||
2280 | fail: | |
f2341e0a | 2281 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'reload' task: %m"); |
f42806df LP |
2282 | s->reload_result = SERVICE_FAILURE_RESOURCES; |
2283 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
2284 | } |
2285 | ||
f42806df | 2286 | static void service_run_next_control(Service *s) { |
36c16a7c | 2287 | usec_t timeout; |
034c6ed7 LP |
2288 | int r; |
2289 | ||
2290 | assert(s); | |
2291 | assert(s->control_command); | |
2292 | assert(s->control_command->command_next); | |
2293 | ||
34e9ba66 | 2294 | assert(s->control_command_id != SERVICE_EXEC_START); |
034c6ed7 | 2295 | |
34e9ba66 | 2296 | s->control_command = s->control_command->command_next; |
5e94833f LP |
2297 | service_unwatch_control_pid(s); |
2298 | ||
36c16a7c LP |
2299 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
2300 | timeout = s->timeout_start_usec; | |
2301 | else | |
2302 | timeout = s->timeout_stop_usec; | |
2303 | ||
ecedd90f LP |
2304 | r = service_spawn(s, |
2305 | s->control_command, | |
36c16a7c | 2306 | timeout, |
1703fa41 | 2307 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL| |
136dc4c4 | 2308 | (IN_SET(s->control_command_id, SERVICE_EXEC_START_PRE, SERVICE_EXEC_STOP_POST) ? EXEC_APPLY_TTY_STDIN : 0)| |
78f93209 LP |
2309 | (IN_SET(s->control_command_id, SERVICE_EXEC_STOP, SERVICE_EXEC_STOP_POST) ? EXEC_SETENV_RESULT : 0)| |
2310 | (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 |
2311 | &s->control_pid); |
2312 | if (r < 0) | |
034c6ed7 LP |
2313 | goto fail; |
2314 | ||
2315 | return; | |
2316 | ||
2317 | fail: | |
f2341e0a | 2318 | log_unit_warning_errno(UNIT(s), r, "Failed to run next control task: %m"); |
034c6ed7 | 2319 | |
4cd9fa81 | 2320 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START_POST, SERVICE_STOP)) |
f42806df | 2321 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 | 2322 | else if (s->state == SERVICE_STOP_POST) |
f42806df | 2323 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); |
e2f3b44c | 2324 | else if (s->state == SERVICE_RELOAD) { |
f42806df LP |
2325 | s->reload_result = SERVICE_FAILURE_RESOURCES; |
2326 | service_enter_running(s, SERVICE_SUCCESS); | |
e2f3b44c | 2327 | } else |
f42806df | 2328 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
5cb5a6ff LP |
2329 | } |
2330 | ||
f42806df | 2331 | static void service_run_next_main(Service *s) { |
34e9ba66 LP |
2332 | pid_t pid; |
2333 | int r; | |
2334 | ||
2335 | assert(s); | |
867b3b7d LP |
2336 | assert(s->main_command); |
2337 | assert(s->main_command->command_next); | |
2338 | assert(s->type == SERVICE_ONESHOT); | |
34e9ba66 | 2339 | |
867b3b7d | 2340 | s->main_command = s->main_command->command_next; |
34e9ba66 LP |
2341 | service_unwatch_main_pid(s); |
2342 | ||
ecedd90f LP |
2343 | r = service_spawn(s, |
2344 | s->main_command, | |
21b2ce39 | 2345 | s->timeout_start_usec, |
1703fa41 | 2346 | EXEC_PASS_FDS|EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_SET_WATCHDOG, |
ecedd90f LP |
2347 | &pid); |
2348 | if (r < 0) | |
34e9ba66 LP |
2349 | goto fail; |
2350 | ||
2351 | service_set_main_pid(s, pid); | |
2352 | ||
2353 | return; | |
2354 | ||
2355 | fail: | |
f2341e0a | 2356 | log_unit_warning_errno(UNIT(s), r, "Failed to run next main task: %m"); |
f42806df | 2357 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); |
34e9ba66 LP |
2358 | } |
2359 | ||
87f0e418 LP |
2360 | static int service_start(Unit *u) { |
2361 | Service *s = SERVICE(u); | |
07299350 | 2362 | int r; |
5cb5a6ff LP |
2363 | |
2364 | assert(s); | |
2365 | ||
034c6ed7 LP |
2366 | /* We cannot fulfill this request right now, try again later |
2367 | * please! */ | |
a00973af | 2368 | if (IN_SET(s->state, |
c87700a1 | 2369 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
a00973af | 2370 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) |
5cb5a6ff LP |
2371 | return -EAGAIN; |
2372 | ||
034c6ed7 | 2373 | /* Already on it! */ |
a00973af | 2374 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST)) |
034c6ed7 LP |
2375 | return 0; |
2376 | ||
2e9d6c12 | 2377 | /* A service that will be restarted must be stopped first to |
7f2cddae | 2378 | * trigger BindsTo and/or OnFailure dependencies. If a user |
2e9d6c12 | 2379 | * does not want to wait for the holdoff time to elapse, the |
d4943dc7 LP |
2380 | * service should be manually restarted, not started. We |
2381 | * simply return EAGAIN here, so that any start jobs stay | |
2382 | * queued, and assume that the auto restart timer will | |
2383 | * eventually trigger the restart. */ | |
2384 | if (s->state == SERVICE_AUTO_RESTART) | |
a8bb2e65 | 2385 | return -EAGAIN; |
2e9d6c12 | 2386 | |
a00973af | 2387 | assert(IN_SET(s->state, SERVICE_DEAD, SERVICE_FAILED)); |
5cb5a6ff | 2388 | |
07299350 | 2389 | /* Make sure we don't enter a busy loop of some kind. */ |
97a3f4ee | 2390 | r = unit_test_start_limit(u); |
07299350 LP |
2391 | if (r < 0) { |
2392 | service_enter_dead(s, SERVICE_FAILURE_START_LIMIT_HIT, false); | |
2393 | return r; | |
2394 | } | |
2395 | ||
4b58153d LP |
2396 | r = unit_acquire_invocation_id(u); |
2397 | if (r < 0) | |
2398 | return r; | |
2399 | ||
f42806df LP |
2400 | s->result = SERVICE_SUCCESS; |
2401 | s->reload_result = SERVICE_SUCCESS; | |
034c6ed7 | 2402 | s->main_pid_known = false; |
6dfa5494 | 2403 | s->main_pid_alien = false; |
47342320 | 2404 | s->forbid_restart = false; |
3c7416b6 | 2405 | |
a1e58e8e | 2406 | s->status_text = mfree(s->status_text); |
8cfdb077 LP |
2407 | s->status_errno = 0; |
2408 | ||
308d72dc LP |
2409 | s->notify_state = NOTIFY_UNKNOWN; |
2410 | ||
aa8c4bbf | 2411 | s->watchdog_original_usec = s->watchdog_usec; |
2787d83c | 2412 | s->watchdog_override_enable = false; |
aa8c4bbf | 2413 | s->watchdog_override_usec = USEC_INFINITY; |
2787d83c | 2414 | |
6a1d4d9f LP |
2415 | exec_command_reset_status_list_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); |
2416 | exec_status_reset(&s->main_exec_status); | |
2417 | ||
7a0019d3 LP |
2418 | /* This is not an automatic restart? Flush the restart counter then */ |
2419 | if (s->flush_n_restarts) { | |
2420 | s->n_restarts = 0; | |
2421 | s->flush_n_restarts = false; | |
2422 | } | |
2423 | ||
6a1d4d9f LP |
2424 | u->reset_accounting = true; |
2425 | ||
034c6ed7 | 2426 | service_enter_start_pre(s); |
82a2b6bb | 2427 | return 1; |
5cb5a6ff LP |
2428 | } |
2429 | ||
87f0e418 LP |
2430 | static int service_stop(Unit *u) { |
2431 | Service *s = SERVICE(u); | |
5cb5a6ff LP |
2432 | |
2433 | assert(s); | |
2434 | ||
a509f0e6 | 2435 | /* Don't create restart jobs from manual stops. */ |
47342320 | 2436 | s->forbid_restart = true; |
034c6ed7 | 2437 | |
e537352b | 2438 | /* Already on it */ |
a00973af | 2439 | if (IN_SET(s->state, |
dc653bf4 | 2440 | SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
a00973af | 2441 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) |
e537352b LP |
2442 | return 0; |
2443 | ||
f0c7b229 | 2444 | /* A restart will be scheduled or is in progress. */ |
034c6ed7 | 2445 | if (s->state == SERVICE_AUTO_RESTART) { |
0c7f15b3 | 2446 | service_set_state(s, SERVICE_DEAD); |
034c6ed7 LP |
2447 | return 0; |
2448 | } | |
2449 | ||
3f6c78dc LP |
2450 | /* If there's already something running we go directly into |
2451 | * kill mode. */ | |
dc653bf4 | 2452 | if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RELOAD, SERVICE_STOP_WATCHDOG)) { |
f42806df | 2453 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
3f6c78dc LP |
2454 | return 0; |
2455 | } | |
5cb5a6ff | 2456 | |
a00973af | 2457 | assert(IN_SET(s->state, SERVICE_RUNNING, SERVICE_EXITED)); |
3a762661 | 2458 | |
f42806df | 2459 | service_enter_stop(s, SERVICE_SUCCESS); |
82a2b6bb | 2460 | return 1; |
5cb5a6ff LP |
2461 | } |
2462 | ||
87f0e418 LP |
2463 | static int service_reload(Unit *u) { |
2464 | Service *s = SERVICE(u); | |
034c6ed7 LP |
2465 | |
2466 | assert(s); | |
2467 | ||
3742095b | 2468 | assert(IN_SET(s->state, SERVICE_RUNNING, SERVICE_EXITED)); |
034c6ed7 LP |
2469 | |
2470 | service_enter_reload(s); | |
2d018ae2 | 2471 | return 1; |
5cb5a6ff LP |
2472 | } |
2473 | ||
44a6b1b6 | 2474 | _pure_ static bool service_can_reload(Unit *u) { |
87f0e418 | 2475 | Service *s = SERVICE(u); |
034c6ed7 LP |
2476 | |
2477 | assert(s); | |
2478 | ||
2479 | return !!s->exec_command[SERVICE_EXEC_RELOAD]; | |
2480 | } | |
2481 | ||
e266c068 MS |
2482 | static unsigned service_exec_command_index(Unit *u, ServiceExecCommand id, ExecCommand *current) { |
2483 | Service *s = SERVICE(u); | |
2484 | unsigned idx = 0; | |
2485 | ExecCommand *first, *c; | |
2486 | ||
2487 | assert(s); | |
2488 | ||
2489 | first = s->exec_command[id]; | |
2490 | ||
2491 | /* Figure out where we are in the list by walking back to the beginning */ | |
2492 | for (c = current; c != first; c = c->command_prev) | |
2493 | idx++; | |
2494 | ||
2495 | return idx; | |
2496 | } | |
2497 | ||
2498 | static int service_serialize_exec_command(Unit *u, FILE *f, ExecCommand *command) { | |
d68c645b LP |
2499 | _cleanup_free_ char *args = NULL, *p = NULL; |
2500 | size_t allocated = 0, length = 0; | |
e266c068 | 2501 | Service *s = SERVICE(u); |
d68c645b | 2502 | const char *type, *key; |
e266c068 MS |
2503 | ServiceExecCommand id; |
2504 | unsigned idx; | |
e266c068 | 2505 | char **arg; |
e266c068 MS |
2506 | |
2507 | assert(s); | |
2508 | assert(f); | |
2509 | ||
2510 | if (!command) | |
2511 | return 0; | |
2512 | ||
2513 | if (command == s->control_command) { | |
2514 | type = "control"; | |
2515 | id = s->control_command_id; | |
2516 | } else { | |
2517 | type = "main"; | |
2518 | id = SERVICE_EXEC_START; | |
2519 | } | |
2520 | ||
2521 | idx = service_exec_command_index(u, id, command); | |
2522 | ||
2523 | STRV_FOREACH(arg, command->argv) { | |
e266c068 | 2524 | _cleanup_free_ char *e = NULL; |
d68c645b | 2525 | size_t n; |
e266c068 | 2526 | |
d68c645b | 2527 | e = cescape(*arg); |
e266c068 | 2528 | if (!e) |
d68c645b | 2529 | return log_oom(); |
e266c068 MS |
2530 | |
2531 | n = strlen(e); | |
2532 | if (!GREEDY_REALLOC(args, allocated, length + 1 + n + 1)) | |
d68c645b | 2533 | return log_oom(); |
e266c068 MS |
2534 | |
2535 | if (length > 0) | |
2536 | args[length++] = ' '; | |
2537 | ||
2538 | memcpy(args + length, e, n); | |
2539 | length += n; | |
2540 | } | |
2541 | ||
2542 | if (!GREEDY_REALLOC(args, allocated, length + 1)) | |
d68c645b LP |
2543 | return log_oom(); |
2544 | ||
e266c068 MS |
2545 | args[length++] = 0; |
2546 | ||
d68c645b | 2547 | p = cescape(command->path); |
e266c068 MS |
2548 | if (!p) |
2549 | return -ENOMEM; | |
2550 | ||
d68c645b LP |
2551 | key = strjoina(type, "-command"); |
2552 | return serialize_item_format(f, key, "%s %u %s %s", service_exec_command_to_string(id), idx, p, args); | |
e266c068 MS |
2553 | } |
2554 | ||
a16e1123 LP |
2555 | static int service_serialize(Unit *u, FILE *f, FDSet *fds) { |
2556 | Service *s = SERVICE(u); | |
2339fc93 | 2557 | ServiceFDStore *fs; |
a34ceba6 | 2558 | int r; |
a16e1123 LP |
2559 | |
2560 | assert(u); | |
2561 | assert(f); | |
2562 | assert(fds); | |
2563 | ||
d68c645b LP |
2564 | (void) serialize_item(f, "state", service_state_to_string(s->state)); |
2565 | (void) serialize_item(f, "result", service_result_to_string(s->result)); | |
2566 | (void) serialize_item(f, "reload-result", service_result_to_string(s->reload_result)); | |
a16e1123 LP |
2567 | |
2568 | if (s->control_pid > 0) | |
d68c645b | 2569 | (void) serialize_item_format(f, "control-pid", PID_FMT, s->control_pid); |
a16e1123 | 2570 | |
5925dd3c | 2571 | if (s->main_pid_known && s->main_pid > 0) |
d68c645b | 2572 | (void) serialize_item_format(f, "main-pid", PID_FMT, s->main_pid); |
a16e1123 | 2573 | |
d68c645b LP |
2574 | (void) serialize_bool(f, "main-pid-known", s->main_pid_known); |
2575 | (void) serialize_bool(f, "bus-name-good", s->bus_name_good); | |
2576 | (void) serialize_bool(f, "bus-name-owner", s->bus_name_owner); | |
a16e1123 | 2577 | |
d68c645b LP |
2578 | (void) serialize_item_format(f, "n-restarts", "%u", s->n_restarts); |
2579 | (void) serialize_bool(f, "flush-n-restarts", s->flush_n_restarts); | |
7a0019d3 | 2580 | |
d68c645b | 2581 | r = serialize_item_escaped(f, "status-text", s->status_text); |
a34ceba6 LP |
2582 | if (r < 0) |
2583 | return r; | |
3a2776bc | 2584 | |
e266c068 MS |
2585 | service_serialize_exec_command(u, f, s->control_command); |
2586 | service_serialize_exec_command(u, f, s->main_command); | |
a16e1123 | 2587 | |
d68c645b | 2588 | r = serialize_fd(f, fds, "stdin-fd", s->stdin_fd); |
a34ceba6 LP |
2589 | if (r < 0) |
2590 | return r; | |
d68c645b | 2591 | r = serialize_fd(f, fds, "stdout-fd", s->stdout_fd); |
a34ceba6 LP |
2592 | if (r < 0) |
2593 | return r; | |
d68c645b | 2594 | r = serialize_fd(f, fds, "stderr-fd", s->stderr_fd); |
a34ceba6 LP |
2595 | if (r < 0) |
2596 | return r; | |
e44da745 | 2597 | |
5686391b | 2598 | if (s->exec_fd_event_source) { |
d68c645b | 2599 | r = serialize_fd(f, fds, "exec-fd", sd_event_source_get_io_fd(s->exec_fd_event_source)); |
5686391b LP |
2600 | if (r < 0) |
2601 | return r; | |
d68c645b LP |
2602 | |
2603 | (void) serialize_bool(f, "exec-fd-hot", s->exec_fd_hot); | |
5686391b LP |
2604 | } |
2605 | ||
9dfb64f8 | 2606 | if (UNIT_ISSET(s->accept_socket)) { |
d68c645b | 2607 | r = serialize_item(f, "accept-socket", UNIT_DEREF(s->accept_socket)->id); |
9dfb64f8 ZJS |
2608 | if (r < 0) |
2609 | return r; | |
2610 | } | |
2611 | ||
d68c645b | 2612 | r = serialize_fd(f, fds, "socket-fd", s->socket_fd); |
a34ceba6 LP |
2613 | if (r < 0) |
2614 | return r; | |
e44da745 | 2615 | |
2339fc93 | 2616 | LIST_FOREACH(fd_store, fs, s->fd_store) { |
8dd4c05b | 2617 | _cleanup_free_ char *c = NULL; |
2339fc93 LP |
2618 | int copy; |
2619 | ||
2620 | copy = fdset_put_dup(fds, fs->fd); | |
2621 | if (copy < 0) | |
d68c645b | 2622 | return log_error_errno(copy, "Failed to copy file descriptor for serialization: %m"); |
2339fc93 | 2623 | |
8dd4c05b | 2624 | c = cescape(fs->fdname); |
d68c645b LP |
2625 | if (!c) |
2626 | return log_oom(); | |
8dd4c05b | 2627 | |
d68c645b | 2628 | (void) serialize_item_format(f, "fd-store-fd", "%i %s", copy, c); |
2339fc93 LP |
2629 | } |
2630 | ||
ecdbca40 | 2631 | if (s->main_exec_status.pid > 0) { |
d68c645b LP |
2632 | (void) serialize_item_format(f, "main-exec-status-pid", PID_FMT, s->main_exec_status.pid); |
2633 | (void) serialize_dual_timestamp(f, "main-exec-status-start", &s->main_exec_status.start_timestamp); | |
2634 | (void) serialize_dual_timestamp(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp); | |
ecdbca40 | 2635 | |
799fd0fd | 2636 | if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) { |
d68c645b LP |
2637 | (void) serialize_item_format(f, "main-exec-status-code", "%i", s->main_exec_status.code); |
2638 | (void) serialize_item_format(f, "main-exec-status-status", "%i", s->main_exec_status.status); | |
ecdbca40 LP |
2639 | } |
2640 | } | |
f06db334 | 2641 | |
d68c645b LP |
2642 | (void) serialize_dual_timestamp(f, "watchdog-timestamp", &s->watchdog_timestamp); |
2643 | (void) serialize_bool(f, "forbid-restart", s->forbid_restart); | |
6aca9a58 | 2644 | |
2787d83c | 2645 | if (s->watchdog_override_enable) |
d68c645b | 2646 | (void) serialize_item_format(f, "watchdog-override-usec", USEC_FMT, s->watchdog_override_usec); |
2787d83c | 2647 | |
aa8c4bbf LP |
2648 | if (s->watchdog_original_usec != USEC_INFINITY) |
2649 | (void) serialize_item_format(f, "watchdog-original-usec", USEC_FMT, s->watchdog_original_usec); | |
2650 | ||
a16e1123 LP |
2651 | return 0; |
2652 | } | |
2653 | ||
e266c068 MS |
2654 | static int service_deserialize_exec_command(Unit *u, const char *key, const char *value) { |
2655 | Service *s = SERVICE(u); | |
2656 | int r; | |
2657 | unsigned idx = 0, i; | |
2658 | bool control, found = false; | |
2659 | ServiceExecCommand id = _SERVICE_EXEC_COMMAND_INVALID; | |
2660 | ExecCommand *command = NULL; | |
6eeec374 | 2661 | _cleanup_free_ char *path = NULL; |
e266c068 MS |
2662 | _cleanup_strv_free_ char **argv = NULL; |
2663 | ||
2664 | enum ExecCommandState { | |
2665 | STATE_EXEC_COMMAND_TYPE, | |
2666 | STATE_EXEC_COMMAND_INDEX, | |
2667 | STATE_EXEC_COMMAND_PATH, | |
2668 | STATE_EXEC_COMMAND_ARGS, | |
2669 | _STATE_EXEC_COMMAND_MAX, | |
2670 | _STATE_EXEC_COMMAND_INVALID = -1, | |
2671 | } state; | |
2672 | ||
2673 | assert(s); | |
2674 | assert(key); | |
2675 | assert(value); | |
2676 | ||
2677 | control = streq(key, "control-command"); | |
2678 | ||
2679 | state = STATE_EXEC_COMMAND_TYPE; | |
2680 | ||
2681 | for (;;) { | |
2682 | _cleanup_free_ char *arg = NULL; | |
2683 | ||
2684 | r = extract_first_word(&value, &arg, NULL, EXTRACT_CUNESCAPE); | |
efa3f34e LP |
2685 | if (r < 0) |
2686 | return r; | |
e266c068 MS |
2687 | if (r == 0) |
2688 | break; | |
e266c068 MS |
2689 | |
2690 | switch (state) { | |
2691 | case STATE_EXEC_COMMAND_TYPE: | |
2692 | id = service_exec_command_from_string(arg); | |
2693 | if (id < 0) | |
2694 | return -EINVAL; | |
2695 | ||
2696 | state = STATE_EXEC_COMMAND_INDEX; | |
2697 | break; | |
2698 | case STATE_EXEC_COMMAND_INDEX: | |
2699 | r = safe_atou(arg, &idx); | |
2700 | if (r < 0) | |
2701 | return -EINVAL; | |
2702 | ||
2703 | state = STATE_EXEC_COMMAND_PATH; | |
2704 | break; | |
2705 | case STATE_EXEC_COMMAND_PATH: | |
ae2a15bc | 2706 | path = TAKE_PTR(arg); |
e266c068 MS |
2707 | state = STATE_EXEC_COMMAND_ARGS; |
2708 | ||
2709 | if (!path_is_absolute(path)) | |
2710 | return -EINVAL; | |
2711 | break; | |
2712 | case STATE_EXEC_COMMAND_ARGS: | |
2713 | r = strv_extend(&argv, arg); | |
2714 | if (r < 0) | |
2715 | return -ENOMEM; | |
2716 | break; | |
2717 | default: | |
2718 | assert_not_reached("Unknown error at deserialization of exec command"); | |
2719 | break; | |
2720 | } | |
2721 | } | |
2722 | ||
2723 | if (state != STATE_EXEC_COMMAND_ARGS) | |
2724 | return -EINVAL; | |
2725 | ||
2726 | /* Let's check whether exec command on given offset matches data that we just deserialized */ | |
2727 | for (command = s->exec_command[id], i = 0; command; command = command->command_next, i++) { | |
2728 | if (i != idx) | |
2729 | continue; | |
2730 | ||
2731 | found = strv_equal(argv, command->argv) && streq(command->path, path); | |
2732 | break; | |
2733 | } | |
2734 | ||
2735 | if (!found) { | |
2736 | /* Command at the index we serialized is different, let's look for command that exactly | |
2737 | * matches but is on different index. If there is no such command we will not resume execution. */ | |
2738 | for (command = s->exec_command[id]; command; command = command->command_next) | |
2739 | if (strv_equal(command->argv, argv) && streq(command->path, path)) | |
2740 | break; | |
2741 | } | |
2742 | ||
2743 | if (command && control) | |
2744 | s->control_command = command; | |
2745 | else if (command) | |
2746 | s->main_command = command; | |
2747 | else | |
2748 | log_unit_warning(u, "Current command vanished from the unit file, execution of the command list won't be resumed."); | |
2749 | ||
2750 | return 0; | |
2751 | } | |
2752 | ||
a16e1123 LP |
2753 | static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { |
2754 | Service *s = SERVICE(u); | |
2339fc93 | 2755 | int r; |
a16e1123 LP |
2756 | |
2757 | assert(u); | |
2758 | assert(key); | |
2759 | assert(value); | |
2760 | assert(fds); | |
2761 | ||
2762 | if (streq(key, "state")) { | |
2763 | ServiceState state; | |
2764 | ||
117dcc57 ZJS |
2765 | state = service_state_from_string(value); |
2766 | if (state < 0) | |
f2341e0a | 2767 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
2768 | else |
2769 | s->deserialized_state = state; | |
f42806df LP |
2770 | } else if (streq(key, "result")) { |
2771 | ServiceResult f; | |
2772 | ||
2773 | f = service_result_from_string(value); | |
2774 | if (f < 0) | |
f2341e0a | 2775 | log_unit_debug(u, "Failed to parse result value: %s", value); |
f42806df LP |
2776 | else if (f != SERVICE_SUCCESS) |
2777 | s->result = f; | |
2778 | ||
2779 | } else if (streq(key, "reload-result")) { | |
2780 | ServiceResult f; | |
2781 | ||
2782 | f = service_result_from_string(value); | |
2783 | if (f < 0) | |
f2341e0a | 2784 | log_unit_debug(u, "Failed to parse reload result value: %s", value); |
f42806df LP |
2785 | else if (f != SERVICE_SUCCESS) |
2786 | s->reload_result = f; | |
a16e1123 | 2787 | |
a16e1123 | 2788 | } else if (streq(key, "control-pid")) { |
5925dd3c | 2789 | pid_t pid; |
a16e1123 | 2790 | |
e364ad06 | 2791 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2792 | log_unit_debug(u, "Failed to parse control-pid value: %s", value); |
a16e1123 | 2793 | else |
e55224ca | 2794 | s->control_pid = pid; |
a16e1123 | 2795 | } else if (streq(key, "main-pid")) { |
5925dd3c | 2796 | pid_t pid; |
a16e1123 | 2797 | |
e364ad06 | 2798 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2799 | log_unit_debug(u, "Failed to parse main-pid value: %s", value); |
eabd3e56 LP |
2800 | else |
2801 | (void) service_set_main_pid(s, pid); | |
a16e1123 LP |
2802 | } else if (streq(key, "main-pid-known")) { |
2803 | int b; | |
2804 | ||
117dcc57 ZJS |
2805 | b = parse_boolean(value); |
2806 | if (b < 0) | |
f2341e0a | 2807 | log_unit_debug(u, "Failed to parse main-pid-known value: %s", value); |
a16e1123 LP |
2808 | else |
2809 | s->main_pid_known = b; | |
de1d4f9b WF |
2810 | } else if (streq(key, "bus-name-good")) { |
2811 | int b; | |
2812 | ||
2813 | b = parse_boolean(value); | |
2814 | if (b < 0) | |
2815 | log_unit_debug(u, "Failed to parse bus-name-good value: %s", value); | |
2816 | else | |
2817 | s->bus_name_good = b; | |
d8ccf5fd DM |
2818 | } else if (streq(key, "bus-name-owner")) { |
2819 | r = free_and_strdup(&s->bus_name_owner, value); | |
2820 | if (r < 0) | |
2821 | log_unit_error_errno(u, r, "Unable to deserialize current bus owner %s: %m", value); | |
3a2776bc LP |
2822 | } else if (streq(key, "status-text")) { |
2823 | char *t; | |
2824 | ||
f2341e0a LP |
2825 | r = cunescape(value, 0, &t); |
2826 | if (r < 0) | |
5e1ee764 | 2827 | log_unit_debug_errno(u, r, "Failed to unescape status text '%s': %m", value); |
efa3f34e LP |
2828 | else |
2829 | free_and_replace(s->status_text, t); | |
3a2776bc | 2830 | |
9dfb64f8 ZJS |
2831 | } else if (streq(key, "accept-socket")) { |
2832 | Unit *socket; | |
2833 | ||
2834 | r = manager_load_unit(u->manager, value, NULL, NULL, &socket); | |
2835 | if (r < 0) | |
5e1ee764 | 2836 | log_unit_debug_errno(u, r, "Failed to load accept-socket unit '%s': %m", value); |
9dfb64f8 | 2837 | else { |
7f7d01ed | 2838 | unit_ref_set(&s->accept_socket, u, socket); |
9dfb64f8 ZJS |
2839 | SOCKET(socket)->n_connections++; |
2840 | } | |
2841 | ||
a16e1123 LP |
2842 | } else if (streq(key, "socket-fd")) { |
2843 | int fd; | |
2844 | ||
2845 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 2846 | log_unit_debug(u, "Failed to parse socket-fd value: %s", value); |
a16e1123 | 2847 | else { |
574634bc | 2848 | asynchronous_close(s->socket_fd); |
a16e1123 LP |
2849 | s->socket_fd = fdset_remove(fds, fd); |
2850 | } | |
2339fc93 | 2851 | } else if (streq(key, "fd-store-fd")) { |
8dd4c05b LP |
2852 | const char *fdv; |
2853 | size_t pf; | |
2339fc93 LP |
2854 | int fd; |
2855 | ||
8dd4c05b LP |
2856 | pf = strcspn(value, WHITESPACE); |
2857 | fdv = strndupa(value, pf); | |
2858 | ||
2859 | if (safe_atoi(fdv, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 2860 | log_unit_debug(u, "Failed to parse fd-store-fd value: %s", value); |
2339fc93 | 2861 | else { |
8dd4c05b LP |
2862 | _cleanup_free_ char *t = NULL; |
2863 | const char *fdn; | |
2864 | ||
2865 | fdn = value + pf; | |
2866 | fdn += strspn(fdn, WHITESPACE); | |
2867 | (void) cunescape(fdn, 0, &t); | |
2868 | ||
2869 | r = service_add_fd_store(s, fd, t); | |
2339fc93 | 2870 | if (r < 0) |
f2341e0a | 2871 | log_unit_error_errno(u, r, "Failed to add fd to store: %m"); |
9021ff17 | 2872 | else |
2339fc93 LP |
2873 | fdset_remove(fds, fd); |
2874 | } | |
2875 | ||
ecdbca40 LP |
2876 | } else if (streq(key, "main-exec-status-pid")) { |
2877 | pid_t pid; | |
2878 | ||
e364ad06 | 2879 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2880 | log_unit_debug(u, "Failed to parse main-exec-status-pid value: %s", value); |
ecdbca40 LP |
2881 | else |
2882 | s->main_exec_status.pid = pid; | |
2883 | } else if (streq(key, "main-exec-status-code")) { | |
2884 | int i; | |
2885 | ||
e364ad06 | 2886 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 2887 | log_unit_debug(u, "Failed to parse main-exec-status-code value: %s", value); |
ecdbca40 LP |
2888 | else |
2889 | s->main_exec_status.code = i; | |
2890 | } else if (streq(key, "main-exec-status-status")) { | |
2891 | int i; | |
2892 | ||
e364ad06 | 2893 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 2894 | log_unit_debug(u, "Failed to parse main-exec-status-status value: %s", value); |
ecdbca40 LP |
2895 | else |
2896 | s->main_exec_status.status = i; | |
799fd0fd | 2897 | } else if (streq(key, "main-exec-status-start")) |
d68c645b | 2898 | deserialize_dual_timestamp(value, &s->main_exec_status.start_timestamp); |
799fd0fd | 2899 | else if (streq(key, "main-exec-status-exit")) |
d68c645b | 2900 | deserialize_dual_timestamp(value, &s->main_exec_status.exit_timestamp); |
a6927d7f | 2901 | else if (streq(key, "watchdog-timestamp")) |
d68c645b | 2902 | deserialize_dual_timestamp(value, &s->watchdog_timestamp); |
613b411c | 2903 | else if (streq(key, "forbid-restart")) { |
6aca9a58 SE |
2904 | int b; |
2905 | ||
2906 | b = parse_boolean(value); | |
2907 | if (b < 0) | |
f2341e0a | 2908 | log_unit_debug(u, "Failed to parse forbid-restart value: %s", value); |
6aca9a58 SE |
2909 | else |
2910 | s->forbid_restart = b; | |
a34ceba6 LP |
2911 | } else if (streq(key, "stdin-fd")) { |
2912 | int fd; | |
2913 | ||
2914 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2915 | log_unit_debug(u, "Failed to parse stdin-fd value: %s", value); | |
2916 | else { | |
2917 | asynchronous_close(s->stdin_fd); | |
2918 | s->stdin_fd = fdset_remove(fds, fd); | |
1e22b5cd | 2919 | s->exec_context.stdio_as_fds = true; |
a34ceba6 LP |
2920 | } |
2921 | } else if (streq(key, "stdout-fd")) { | |
2922 | int fd; | |
2923 | ||
2924 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2925 | log_unit_debug(u, "Failed to parse stdout-fd value: %s", value); | |
2926 | else { | |
2927 | asynchronous_close(s->stdout_fd); | |
2928 | s->stdout_fd = fdset_remove(fds, fd); | |
1e22b5cd | 2929 | s->exec_context.stdio_as_fds = true; |
a34ceba6 LP |
2930 | } |
2931 | } else if (streq(key, "stderr-fd")) { | |
2932 | int fd; | |
2933 | ||
2934 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2935 | log_unit_debug(u, "Failed to parse stderr-fd value: %s", value); | |
2936 | else { | |
2937 | asynchronous_close(s->stderr_fd); | |
2938 | s->stderr_fd = fdset_remove(fds, fd); | |
1e22b5cd | 2939 | s->exec_context.stdio_as_fds = true; |
a34ceba6 | 2940 | } |
5686391b LP |
2941 | } else if (streq(key, "exec-fd")) { |
2942 | int fd; | |
2943 | ||
2944 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2945 | log_unit_debug(u, "Failed to parse exec-fd value: %s", value); | |
2946 | else { | |
2947 | s->exec_fd_event_source = sd_event_source_unref(s->exec_fd_event_source); | |
2948 | ||
2949 | fd = fdset_remove(fds, fd); | |
2950 | if (service_allocate_exec_fd_event_source(s, fd, &s->exec_fd_event_source) < 0) | |
2951 | safe_close(fd); | |
2952 | } | |
2787d83c | 2953 | } else if (streq(key, "watchdog-override-usec")) { |
d68c645b | 2954 | if (deserialize_usec(value, &s->watchdog_override_usec) < 0) |
2787d83c | 2955 | log_unit_debug(u, "Failed to parse watchdog_override_usec value: %s", value); |
d68c645b | 2956 | else |
2787d83c | 2957 | s->watchdog_override_enable = true; |
d68c645b | 2958 | |
aa8c4bbf LP |
2959 | } else if (streq(key, "watchdog-original-usec")) { |
2960 | if (deserialize_usec(value, &s->watchdog_original_usec) < 0) | |
2961 | log_unit_debug(u, "Failed to parse watchdog_original_usec value: %s", value); | |
2962 | ||
e266c068 MS |
2963 | } else if (STR_IN_SET(key, "main-command", "control-command")) { |
2964 | r = service_deserialize_exec_command(u, key, value); | |
2965 | if (r < 0) | |
2966 | log_unit_debug_errno(u, r, "Failed to parse serialized command \"%s\": %m", value); | |
7a0019d3 LP |
2967 | |
2968 | } else if (streq(key, "n-restarts")) { | |
2969 | r = safe_atou(value, &s->n_restarts); | |
2970 | if (r < 0) | |
2971 | log_unit_debug_errno(u, r, "Failed to parse serialized restart counter '%s': %m", value); | |
2972 | ||
2973 | } else if (streq(key, "flush-n-restarts")) { | |
2974 | r = parse_boolean(value); | |
2975 | if (r < 0) | |
2976 | log_unit_debug_errno(u, r, "Failed to parse serialized flush restart counter setting '%s': %m", value); | |
2977 | else | |
2978 | s->flush_n_restarts = r; | |
c17ec25e | 2979 | } else |
f2341e0a | 2980 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
2981 | |
2982 | return 0; | |
2983 | } | |
2984 | ||
44a6b1b6 | 2985 | _pure_ static UnitActiveState service_active_state(Unit *u) { |
e056b01d LP |
2986 | const UnitActiveState *table; |
2987 | ||
87f0e418 | 2988 | assert(u); |
5cb5a6ff | 2989 | |
e056b01d LP |
2990 | table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
2991 | ||
2992 | return table[SERVICE(u)->state]; | |
034c6ed7 LP |
2993 | } |
2994 | ||
10a94420 LP |
2995 | static const char *service_sub_state_to_string(Unit *u) { |
2996 | assert(u); | |
2997 | ||
2998 | return service_state_to_string(SERVICE(u)->state); | |
2999 | } | |
3000 | ||
f2f725e5 | 3001 | static bool service_may_gc(Unit *u) { |
701cc384 LP |
3002 | Service *s = SERVICE(u); |
3003 | ||
3004 | assert(s); | |
3005 | ||
e98b2fbb | 3006 | /* Never clean up services that still have a process around, even if the service is formally dead. Note that |
f2f725e5 | 3007 | * unit_may_gc() already checked our cgroup for us, we just check our two additional PIDs, too, in case they |
e98b2fbb LP |
3008 | * have moved outside of the cgroup. */ |
3009 | ||
3010 | if (main_pid_good(s) > 0 || | |
6d55002a | 3011 | control_pid_good(s) > 0) |
f2f725e5 | 3012 | return false; |
6d55002a | 3013 | |
f2f725e5 | 3014 | return true; |
6d55002a LP |
3015 | } |
3016 | ||
3a111838 MS |
3017 | static int service_retry_pid_file(Service *s) { |
3018 | int r; | |
3019 | ||
3020 | assert(s->pid_file); | |
3742095b | 3021 | assert(IN_SET(s->state, SERVICE_START, SERVICE_START_POST)); |
3a111838 MS |
3022 | |
3023 | r = service_load_pid_file(s, false); | |
3024 | if (r < 0) | |
3025 | return r; | |
3026 | ||
3027 | service_unwatch_pid_file(s); | |
3028 | ||
f42806df | 3029 | service_enter_running(s, SERVICE_SUCCESS); |
3a111838 MS |
3030 | return 0; |
3031 | } | |
3032 | ||
3033 | static int service_watch_pid_file(Service *s) { | |
3034 | int r; | |
3035 | ||
f2341e0a | 3036 | log_unit_debug(UNIT(s), "Setting watch for PID file %s", s->pid_file_pathspec->path); |
8bb2d17d | 3037 | |
5686391b | 3038 | r = path_spec_watch(s->pid_file_pathspec, service_dispatch_inotify_io); |
3a111838 MS |
3039 | if (r < 0) |
3040 | goto fail; | |
3041 | ||
3042 | /* the pidfile might have appeared just before we set the watch */ | |
f2341e0a | 3043 | log_unit_debug(UNIT(s), "Trying to read PID file %s in case it changed", s->pid_file_pathspec->path); |
3a111838 MS |
3044 | service_retry_pid_file(s); |
3045 | ||
3046 | return 0; | |
3047 | fail: | |
f2341e0a | 3048 | log_unit_error_errno(UNIT(s), r, "Failed to set a watch for PID file %s: %m", s->pid_file_pathspec->path); |
3a111838 MS |
3049 | service_unwatch_pid_file(s); |
3050 | return r; | |
3051 | } | |
3052 | ||
3053 | static int service_demand_pid_file(Service *s) { | |
3054 | PathSpec *ps; | |
3055 | ||
3056 | assert(s->pid_file); | |
3057 | assert(!s->pid_file_pathspec); | |
3058 | ||
3059 | ps = new0(PathSpec, 1); | |
3060 | if (!ps) | |
3061 | return -ENOMEM; | |
3062 | ||
718db961 | 3063 | ps->unit = UNIT(s); |
3a111838 MS |
3064 | ps->path = strdup(s->pid_file); |
3065 | if (!ps->path) { | |
3066 | free(ps); | |
3067 | return -ENOMEM; | |
3068 | } | |
3069 | ||
858d36c1 | 3070 | path_simplify(ps->path, false); |
3a111838 MS |
3071 | |
3072 | /* PATH_CHANGED would not be enough. There are daemons (sendmail) that | |
3073 | * keep their PID file open all the time. */ | |
3074 | ps->type = PATH_MODIFIED; | |
3075 | ps->inotify_fd = -1; | |
3076 | ||
3077 | s->pid_file_pathspec = ps; | |
3078 | ||
3079 | return service_watch_pid_file(s); | |
3080 | } | |
3081 | ||
5686391b | 3082 | static int service_dispatch_inotify_io(sd_event_source *source, int fd, uint32_t events, void *userdata) { |
e14c2802 LP |
3083 | PathSpec *p = userdata; |
3084 | Service *s; | |
3085 | ||
3086 | assert(p); | |
3087 | ||
3088 | s = SERVICE(p->unit); | |
3a111838 MS |
3089 | |
3090 | assert(s); | |
3091 | assert(fd >= 0); | |
3742095b | 3092 | assert(IN_SET(s->state, SERVICE_START, SERVICE_START_POST)); |
3a111838 | 3093 | assert(s->pid_file_pathspec); |
57020a3a | 3094 | assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd)); |
3a111838 | 3095 | |
f2341e0a | 3096 | log_unit_debug(UNIT(s), "inotify event"); |
3a111838 | 3097 | |
e14c2802 | 3098 | if (path_spec_fd_event(p, events) < 0) |
3a111838 MS |
3099 | goto fail; |
3100 | ||
3101 | if (service_retry_pid_file(s) == 0) | |
718db961 | 3102 | return 0; |
3a111838 MS |
3103 | |
3104 | if (service_watch_pid_file(s) < 0) | |
3105 | goto fail; | |
3106 | ||
718db961 LP |
3107 | return 0; |
3108 | ||
3a111838 MS |
3109 | fail: |
3110 | service_unwatch_pid_file(s); | |
f42806df | 3111 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
718db961 | 3112 | return 0; |
3a111838 MS |
3113 | } |
3114 | ||
5686391b LP |
3115 | static int service_dispatch_exec_io(sd_event_source *source, int fd, uint32_t events, void *userdata) { |
3116 | Service *s = SERVICE(userdata); | |
3117 | ||
3118 | assert(s); | |
3119 | ||
3120 | log_unit_debug(UNIT(s), "got exec-fd event"); | |
3121 | ||
3122 | /* If Type=exec is set, we'll consider a service started successfully the instant we invoked execve() | |
3123 | * successfully for it. We implement this through a pipe() towards the child, which the kernel automatically | |
3124 | * closes for us due to O_CLOEXEC on execve() in the child, which then triggers EOF on the pipe in the | |
3125 | * parent. We need to be careful however, as there are other reasons that we might cause the child's side of | |
3126 | * the pipe to be closed (for example, a simple exit()). To deal with that we'll ignore EOFs on the pipe unless | |
3127 | * the child signalled us first that it is about to call the execve(). It does so by sending us a simple | |
3128 | * non-zero byte via the pipe. We also provide the child with a way to inform us in case execve() failed: if it | |
3129 | * sends a zero byte we'll ignore POLLHUP on the fd again. */ | |
3130 | ||
3131 | for (;;) { | |
3132 | uint8_t x; | |
3133 | ssize_t n; | |
3134 | ||
3135 | n = read(fd, &x, sizeof(x)); | |
3136 | if (n < 0) { | |
3137 | if (errno == EAGAIN) /* O_NONBLOCK in effect → everything queued has now been processed. */ | |
3138 | return 0; | |
3139 | ||
3140 | return log_unit_error_errno(UNIT(s), errno, "Failed to read from exec_fd: %m"); | |
3141 | } | |
3142 | if (n == 0) { /* EOF → the event we are waiting for */ | |
3143 | ||
3144 | s->exec_fd_event_source = sd_event_source_unref(s->exec_fd_event_source); | |
3145 | ||
3146 | if (s->exec_fd_hot) { /* Did the child tell us to expect EOF now? */ | |
3147 | log_unit_debug(UNIT(s), "Got EOF on exec-fd"); | |
3148 | ||
3149 | s->exec_fd_hot = false; | |
3150 | ||
3151 | /* Nice! This is what we have been waiting for. Transition to next state. */ | |
3152 | if (s->type == SERVICE_EXEC && s->state == SERVICE_START) | |
3153 | service_enter_start_post(s); | |
3154 | } else | |
3155 | log_unit_debug(UNIT(s), "Got EOF on exec-fd while it was disabled, ignoring."); | |
3156 | ||
3157 | return 0; | |
3158 | } | |
3159 | ||
3160 | /* A byte was read → this turns on/off the exec fd logic */ | |
3161 | assert(n == sizeof(x)); | |
3162 | s->exec_fd_hot = x; | |
3163 | } | |
3164 | ||
3165 | return 0; | |
3166 | } | |
3167 | ||
a911bb9a LP |
3168 | static void service_notify_cgroup_empty_event(Unit *u) { |
3169 | Service *s = SERVICE(u); | |
3170 | ||
3171 | assert(u); | |
3172 | ||
a5b5aece | 3173 | log_unit_debug(u, "Control group is empty."); |
a911bb9a LP |
3174 | |
3175 | switch (s->state) { | |
3176 | ||
3177 | /* Waiting for SIGCHLD is usually more interesting, | |
3178 | * because it includes return codes/signals. Which is | |
3179 | * why we ignore the cgroup events for most cases, | |
3180 | * except when we don't know pid which to expect the | |
3181 | * SIGCHLD for. */ | |
3182 | ||
3183 | case SERVICE_START: | |
3c751b1b LP |
3184 | if (s->type == SERVICE_NOTIFY && |
3185 | main_pid_good(s) == 0 && | |
3186 | control_pid_good(s) == 0) { | |
3d474ef7 | 3187 | /* No chance of getting a ready notification anymore */ |
c3fda31d | 3188 | service_enter_stop_post(s, SERVICE_FAILURE_PROTOCOL); |
71e529fc JW |
3189 | break; |
3190 | } | |
3191 | ||
4831981d | 3192 | _fallthrough_; |
71e529fc | 3193 | case SERVICE_START_POST: |
3c751b1b LP |
3194 | if (s->pid_file_pathspec && |
3195 | main_pid_good(s) == 0 && | |
3196 | control_pid_good(s) == 0) { | |
3197 | ||
3d474ef7 | 3198 | /* Give up hoping for the daemon to write its PID file */ |
f2341e0a | 3199 | log_unit_warning(u, "Daemon never wrote its PID file. Failing."); |
8bb2d17d | 3200 | |
a911bb9a LP |
3201 | service_unwatch_pid_file(s); |
3202 | if (s->state == SERVICE_START) | |
c3fda31d | 3203 | service_enter_stop_post(s, SERVICE_FAILURE_PROTOCOL); |
a911bb9a | 3204 | else |
c35755fb | 3205 | service_enter_stop(s, SERVICE_FAILURE_PROTOCOL); |
a911bb9a LP |
3206 | } |
3207 | break; | |
3208 | ||
3209 | case SERVICE_RUNNING: | |
3210 | /* service_enter_running() will figure out what to do */ | |
3211 | service_enter_running(s, SERVICE_SUCCESS); | |
3212 | break; | |
3213 | ||
c87700a1 | 3214 | case SERVICE_STOP_WATCHDOG: |
a911bb9a LP |
3215 | case SERVICE_STOP_SIGTERM: |
3216 | case SERVICE_STOP_SIGKILL: | |
3217 | ||
b13ddbbc | 3218 | if (main_pid_good(s) <= 0 && control_pid_good(s) <= 0) |
a911bb9a LP |
3219 | service_enter_stop_post(s, SERVICE_SUCCESS); |
3220 | ||
3221 | break; | |
3222 | ||
3223 | case SERVICE_STOP_POST: | |
3224 | case SERVICE_FINAL_SIGTERM: | |
3225 | case SERVICE_FINAL_SIGKILL: | |
b13ddbbc | 3226 | if (main_pid_good(s) <= 0 && control_pid_good(s) <= 0) |
a911bb9a LP |
3227 | service_enter_dead(s, SERVICE_SUCCESS, true); |
3228 | ||
3229 | break; | |
3230 | ||
3231 | default: | |
3232 | ; | |
3233 | } | |
3234 | } | |
3235 | ||
afcfaa69 LP |
3236 | static void service_notify_cgroup_oom_event(Unit *u) { |
3237 | Service *s = SERVICE(u); | |
3238 | ||
3239 | log_unit_debug(u, "Process of control group was killed by the OOM killer."); | |
3240 | ||
3241 | if (s->oom_policy == OOM_CONTINUE) | |
3242 | return; | |
3243 | ||
3244 | switch (s->state) { | |
3245 | ||
3246 | case SERVICE_START_PRE: | |
3247 | case SERVICE_START: | |
3248 | case SERVICE_START_POST: | |
3249 | case SERVICE_STOP: | |
3250 | if (s->oom_policy == OOM_STOP) | |
3251 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_OOM_KILL); | |
3252 | else if (s->oom_policy == OOM_KILL) | |
3253 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_OOM_KILL); | |
3254 | ||
3255 | break; | |
3256 | ||
3257 | case SERVICE_EXITED: | |
3258 | case SERVICE_RUNNING: | |
3259 | if (s->oom_policy == OOM_STOP) | |
3260 | service_enter_stop(s, SERVICE_FAILURE_OOM_KILL); | |
3261 | else if (s->oom_policy == OOM_KILL) | |
3262 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_OOM_KILL); | |
3263 | ||
3264 | break; | |
3265 | ||
3266 | case SERVICE_STOP_WATCHDOG: | |
3267 | case SERVICE_STOP_SIGTERM: | |
3268 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_OOM_KILL); | |
3269 | break; | |
3270 | ||
3271 | case SERVICE_STOP_SIGKILL: | |
3272 | case SERVICE_FINAL_SIGKILL: | |
3273 | if (s->result == SERVICE_SUCCESS) | |
3274 | s->result = SERVICE_FAILURE_OOM_KILL; | |
3275 | break; | |
3276 | ||
3277 | case SERVICE_STOP_POST: | |
3278 | case SERVICE_FINAL_SIGTERM: | |
3279 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_OOM_KILL); | |
3280 | break; | |
3281 | ||
3282 | default: | |
3283 | ; | |
3284 | } | |
3285 | } | |
3286 | ||
87f0e418 | 3287 | static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
5cdabc8d | 3288 | bool notify_dbus = true; |
87f0e418 | 3289 | Service *s = SERVICE(u); |
f42806df | 3290 | ServiceResult f; |
e5123725 | 3291 | ExitClean clean_mode; |
5cb5a6ff LP |
3292 | |
3293 | assert(s); | |
034c6ed7 LP |
3294 | assert(pid >= 0); |
3295 | ||
e5123725 AZ |
3296 | /* Oneshot services and non-SERVICE_EXEC_START commands should not be |
3297 | * considered daemons as they are typically not long running. */ | |
3298 | if (s->type == SERVICE_ONESHOT || (s->control_pid == pid && s->control_command_id != SERVICE_EXEC_START)) | |
3299 | clean_mode = EXIT_CLEAN_COMMAND; | |
3300 | else | |
3301 | clean_mode = EXIT_CLEAN_DAEMON; | |
3302 | ||
3303 | if (is_clean_exit(code, status, clean_mode, &s->success_status)) | |
f42806df LP |
3304 | f = SERVICE_SUCCESS; |
3305 | else if (code == CLD_EXITED) | |
3306 | f = SERVICE_FAILURE_EXIT_CODE; | |
3307 | else if (code == CLD_KILLED) | |
3308 | f = SERVICE_FAILURE_SIGNAL; | |
3309 | else if (code == CLD_DUMPED) | |
3310 | f = SERVICE_FAILURE_CORE_DUMP; | |
d06dacd0 | 3311 | else |
cfc4eb4c | 3312 | assert_not_reached("Unknown code"); |
034c6ed7 LP |
3313 | |
3314 | if (s->main_pid == pid) { | |
db01f8b3 MS |
3315 | /* Forking services may occasionally move to a new PID. |
3316 | * As long as they update the PID file before exiting the old | |
3317 | * PID, they're fine. */ | |
db256aab | 3318 | if (service_load_pid_file(s, false) > 0) |
db01f8b3 | 3319 | return; |
034c6ed7 | 3320 | |
034c6ed7 | 3321 | s->main_pid = 0; |
6ea832a2 | 3322 | exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status); |
034c6ed7 | 3323 | |
867b3b7d | 3324 | if (s->main_command) { |
fbeefb45 LP |
3325 | /* If this is not a forking service than the |
3326 | * main process got started and hence we copy | |
3327 | * the exit status so that it is recorded both | |
3328 | * as main and as control process exit | |
3329 | * status */ | |
3330 | ||
867b3b7d | 3331 | s->main_command->exec_status = s->main_exec_status; |
b708e7ce | 3332 | |
3ed0cd26 | 3333 | if (s->main_command->flags & EXEC_COMMAND_IGNORE_FAILURE) |
f42806df | 3334 | f = SERVICE_SUCCESS; |
fbeefb45 LP |
3335 | } else if (s->exec_command[SERVICE_EXEC_START]) { |
3336 | ||
3337 | /* If this is a forked process, then we should | |
3338 | * ignore the return value if this was | |
3339 | * configured for the starter process */ | |
3340 | ||
3ed0cd26 | 3341 | if (s->exec_command[SERVICE_EXEC_START]->flags & EXEC_COMMAND_IGNORE_FAILURE) |
fbeefb45 | 3342 | f = SERVICE_SUCCESS; |
034c6ed7 LP |
3343 | } |
3344 | ||
5368222d LP |
3345 | /* When this is a successful exit, let's log about the exit code on DEBUG level. If this is a failure |
3346 | * and the process exited on its own via exit(), then let's make this a NOTICE, under the assumption | |
91bbd9b7 LP |
3347 | * that the service already logged the reason at a higher log level on its own. (Internally, |
3348 | * unit_log_process_exit() will possibly bump this to WARNING if the service died due to a signal.) */ | |
3349 | unit_log_process_exit( | |
3350 | u, f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, | |
3351 | "Main process", | |
3352 | service_exec_command_to_string(SERVICE_EXEC_START), | |
3353 | code, status); | |
f42806df | 3354 | |
a0fef983 | 3355 | if (s->result == SERVICE_SUCCESS) |
f42806df | 3356 | s->result = f; |
034c6ed7 | 3357 | |
867b3b7d LP |
3358 | if (s->main_command && |
3359 | s->main_command->command_next && | |
b58aeb70 | 3360 | s->type == SERVICE_ONESHOT && |
f42806df | 3361 | f == SERVICE_SUCCESS) { |
034c6ed7 | 3362 | |
34e9ba66 LP |
3363 | /* There is another command to * |
3364 | * execute, so let's do that. */ | |
034c6ed7 | 3365 | |
f2341e0a | 3366 | log_unit_debug(u, "Running next main command for state %s.", service_state_to_string(s->state)); |
f42806df | 3367 | service_run_next_main(s); |
034c6ed7 | 3368 | |
34e9ba66 LP |
3369 | } else { |
3370 | ||
3371 | /* The service exited, so the service is officially | |
3372 | * gone. */ | |
867b3b7d | 3373 | s->main_command = NULL; |
34e9ba66 LP |
3374 | |
3375 | switch (s->state) { | |
3376 | ||
3377 | case SERVICE_START_POST: | |
3378 | case SERVICE_RELOAD: | |
3379 | case SERVICE_STOP: | |
3380 | /* Need to wait until the operation is | |
3381 | * done */ | |
c4653a4d | 3382 | break; |
7d55e835 | 3383 | |
34e9ba66 LP |
3384 | case SERVICE_START: |
3385 | if (s->type == SERVICE_ONESHOT) { | |
3386 | /* This was our main goal, so let's go on */ | |
f42806df | 3387 | if (f == SERVICE_SUCCESS) |
34e9ba66 LP |
3388 | service_enter_start_post(s); |
3389 | else | |
c3fda31d | 3390 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
34e9ba66 | 3391 | break; |
3d474ef7 JW |
3392 | } else if (s->type == SERVICE_NOTIFY) { |
3393 | /* Only enter running through a notification, so that the | |
3394 | * SERVICE_START state signifies that no ready notification | |
3395 | * has been received */ | |
3396 | if (f != SERVICE_SUCCESS) | |
c3fda31d | 3397 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
df66b93f JW |
3398 | else if (!s->remain_after_exit || s->notify_access == NOTIFY_MAIN) |
3399 | /* The service has never been and will never be active */ | |
c3fda31d | 3400 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_PROTOCOL); |
3d474ef7 | 3401 | break; |
34e9ba66 | 3402 | } |
034c6ed7 | 3403 | |
4831981d | 3404 | _fallthrough_; |
34e9ba66 | 3405 | case SERVICE_RUNNING: |
f42806df | 3406 | service_enter_running(s, f); |
34e9ba66 | 3407 | break; |
034c6ed7 | 3408 | |
c87700a1 | 3409 | case SERVICE_STOP_WATCHDOG: |
34e9ba66 LP |
3410 | case SERVICE_STOP_SIGTERM: |
3411 | case SERVICE_STOP_SIGKILL: | |
5cb5a6ff | 3412 | |
b13ddbbc | 3413 | if (control_pid_good(s) <= 0) |
f42806df | 3414 | service_enter_stop_post(s, f); |
5cb5a6ff | 3415 | |
34e9ba66 LP |
3416 | /* If there is still a control process, wait for that first */ |
3417 | break; | |
3418 | ||
bf108e55 LP |
3419 | case SERVICE_STOP_POST: |
3420 | case SERVICE_FINAL_SIGTERM: | |
3421 | case SERVICE_FINAL_SIGKILL: | |
3422 | ||
b13ddbbc | 3423 | if (control_pid_good(s) <= 0) |
bf108e55 LP |
3424 | service_enter_dead(s, f, true); |
3425 | break; | |
3426 | ||
34e9ba66 LP |
3427 | default: |
3428 | assert_not_reached("Uh, main process died at wrong time."); | |
3429 | } | |
034c6ed7 | 3430 | } |
5cb5a6ff | 3431 | |
034c6ed7 | 3432 | } else if (s->control_pid == pid) { |
34e9ba66 LP |
3433 | s->control_pid = 0; |
3434 | ||
b708e7ce | 3435 | if (s->control_command) { |
8bb2d17d | 3436 | exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status); |
a16e1123 | 3437 | |
3ed0cd26 | 3438 | if (s->control_command->flags & EXEC_COMMAND_IGNORE_FAILURE) |
f42806df | 3439 | f = SERVICE_SUCCESS; |
b708e7ce LP |
3440 | } |
3441 | ||
91bbd9b7 LP |
3442 | unit_log_process_exit( |
3443 | u, f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, | |
3444 | "Control process", | |
3445 | service_exec_command_to_string(s->control_command_id), | |
3446 | code, status); | |
f42806df | 3447 | |
a0fef983 | 3448 | if (s->result == SERVICE_SUCCESS) |
f42806df | 3449 | s->result = f; |
034c6ed7 | 3450 | |
34e9ba66 LP |
3451 | if (s->control_command && |
3452 | s->control_command->command_next && | |
f42806df | 3453 | f == SERVICE_SUCCESS) { |
034c6ed7 LP |
3454 | |
3455 | /* There is another command to * | |
3456 | * execute, so let's do that. */ | |
3457 | ||
f2341e0a | 3458 | log_unit_debug(u, "Running next control command for state %s.", service_state_to_string(s->state)); |
f42806df | 3459 | service_run_next_control(s); |
034c6ed7 | 3460 | |
80876c20 | 3461 | } else { |
034c6ed7 LP |
3462 | /* No further commands for this step, so let's |
3463 | * figure out what to do next */ | |
3464 | ||
a16e1123 LP |
3465 | s->control_command = NULL; |
3466 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
3467 | ||
f2341e0a | 3468 | log_unit_debug(u, "Got final SIGCHLD for state %s.", service_state_to_string(s->state)); |
bd982a8b | 3469 | |
034c6ed7 LP |
3470 | switch (s->state) { |
3471 | ||
3472 | case SERVICE_START_PRE: | |
f42806df | 3473 | if (f == SERVICE_SUCCESS) |
034c6ed7 LP |
3474 | service_enter_start(s); |
3475 | else | |
c3fda31d | 3476 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
034c6ed7 LP |
3477 | break; |
3478 | ||
3479 | case SERVICE_START: | |
bfba3256 LP |
3480 | if (s->type != SERVICE_FORKING) |
3481 | /* Maybe spurious event due to a reload that changed the type? */ | |
3482 | break; | |
034c6ed7 | 3483 | |
f42806df | 3484 | if (f != SERVICE_SUCCESS) { |
c3fda31d | 3485 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
3a111838 MS |
3486 | break; |
3487 | } | |
034c6ed7 | 3488 | |
3a111838 | 3489 | if (s->pid_file) { |
f42806df LP |
3490 | bool has_start_post; |
3491 | int r; | |
3492 | ||
3a111838 MS |
3493 | /* Let's try to load the pid file here if we can. |
3494 | * The PID file might actually be created by a START_POST | |
3495 | * script. In that case don't worry if the loading fails. */ | |
f42806df | 3496 | |
5d904a6a | 3497 | has_start_post = s->exec_command[SERVICE_EXEC_START_POST]; |
f42806df | 3498 | r = service_load_pid_file(s, !has_start_post); |
3a111838 MS |
3499 | if (!has_start_post && r < 0) { |
3500 | r = service_demand_pid_file(s); | |
b13ddbbc | 3501 | if (r < 0 || cgroup_good(s) == 0) |
c3fda31d | 3502 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_PROTOCOL); |
3a111838 MS |
3503 | break; |
3504 | } | |
034c6ed7 | 3505 | } else |
783e05d6 | 3506 | service_search_main_pid(s); |
034c6ed7 | 3507 | |
3a111838 | 3508 | service_enter_start_post(s); |
034c6ed7 LP |
3509 | break; |
3510 | ||
3511 | case SERVICE_START_POST: | |
f42806df | 3512 | if (f != SERVICE_SUCCESS) { |
ce359e98 | 3513 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
2096e009 | 3514 | break; |
034c6ed7 LP |
3515 | } |
3516 | ||
2096e009 | 3517 | if (s->pid_file) { |
f42806df LP |
3518 | int r; |
3519 | ||
3520 | r = service_load_pid_file(s, true); | |
2096e009 MS |
3521 | if (r < 0) { |
3522 | r = service_demand_pid_file(s); | |
b13ddbbc | 3523 | if (r < 0 || cgroup_good(s) == 0) |
c35755fb | 3524 | service_enter_stop(s, SERVICE_FAILURE_PROTOCOL); |
2096e009 MS |
3525 | break; |
3526 | } | |
3527 | } else | |
783e05d6 | 3528 | service_search_main_pid(s); |
2096e009 | 3529 | |
f42806df | 3530 | service_enter_running(s, SERVICE_SUCCESS); |
3185a36b | 3531 | break; |
034c6ed7 LP |
3532 | |
3533 | case SERVICE_RELOAD: | |
7236ce6e ZJS |
3534 | if (f == SERVICE_SUCCESS) |
3535 | if (service_load_pid_file(s, true) < 0) | |
3536 | service_search_main_pid(s); | |
3185a36b | 3537 | |
f42806df LP |
3538 | s->reload_result = f; |
3539 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
3540 | break; |
3541 | ||
3542 | case SERVICE_STOP: | |
f42806df | 3543 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
034c6ed7 LP |
3544 | break; |
3545 | ||
c87700a1 | 3546 | case SERVICE_STOP_WATCHDOG: |
034c6ed7 LP |
3547 | case SERVICE_STOP_SIGTERM: |
3548 | case SERVICE_STOP_SIGKILL: | |
3549 | if (main_pid_good(s) <= 0) | |
f42806df | 3550 | service_enter_stop_post(s, f); |
034c6ed7 | 3551 | |
846a07b5 | 3552 | /* If there is still a service process around, wait until |
034c6ed7 LP |
3553 | * that one quit, too */ |
3554 | break; | |
3555 | ||
3556 | case SERVICE_STOP_POST: | |
3557 | case SERVICE_FINAL_SIGTERM: | |
3558 | case SERVICE_FINAL_SIGKILL: | |
bf108e55 LP |
3559 | if (main_pid_good(s) <= 0) |
3560 | service_enter_dead(s, f, true); | |
034c6ed7 LP |
3561 | break; |
3562 | ||
3563 | default: | |
3564 | assert_not_reached("Uh, control process died at wrong time."); | |
3565 | } | |
3566 | } | |
5cdabc8d LP |
3567 | } else /* Neither control nor main PID? If so, don't notify about anything */ |
3568 | notify_dbus = false; | |
c4e2ceae LP |
3569 | |
3570 | /* Notify clients about changed exit status */ | |
5cdabc8d LP |
3571 | if (notify_dbus) |
3572 | unit_add_to_dbus_queue(u); | |
a911bb9a | 3573 | |
846a07b5 FB |
3574 | /* We watch the main/control process otherwise we can't retrieve the unit they |
3575 | * belong to with cgroupv1. But if they are not our direct child, we won't get a | |
3576 | * SIGCHLD for them. Therefore we need to look for others to watch so we can | |
3577 | * detect when the cgroup becomes empty. Note that the control process is always | |
3578 | * our child so it's pointless to watch all other processes. */ | |
3579 | if (!control_pid_good(s)) | |
3580 | if (!s->main_pid_known || s->main_pid_alien) | |
3581 | (void) unit_enqueue_rewatch_pids(u); | |
034c6ed7 LP |
3582 | } |
3583 | ||
718db961 LP |
3584 | static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
3585 | Service *s = SERVICE(userdata); | |
034c6ed7 LP |
3586 | |
3587 | assert(s); | |
718db961 | 3588 | assert(source == s->timer_event_source); |
034c6ed7 LP |
3589 | |
3590 | switch (s->state) { | |
3591 | ||
3592 | case SERVICE_START_PRE: | |
3593 | case SERVICE_START: | |
f2341e0a | 3594 | log_unit_warning(UNIT(s), "%s operation timed out. Terminating.", s->state == SERVICE_START ? "Start" : "Start-pre"); |
c3fda31d | 3595 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
80876c20 LP |
3596 | break; |
3597 | ||
034c6ed7 | 3598 | case SERVICE_START_POST: |
f2341e0a | 3599 | log_unit_warning(UNIT(s), "Start-post operation timed out. Stopping."); |
ce359e98 | 3600 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3601 | break; |
3602 | ||
36c16a7c LP |
3603 | case SERVICE_RUNNING: |
3604 | log_unit_warning(UNIT(s), "Service reached runtime time limit. Stopping."); | |
3605 | service_enter_stop(s, SERVICE_FAILURE_TIMEOUT); | |
3606 | break; | |
3607 | ||
e2f3b44c | 3608 | case SERVICE_RELOAD: |
089b64d5 | 3609 | log_unit_warning(UNIT(s), "Reload operation timed out. Killing reload process."); |
e9a4f676 | 3610 | service_kill_control_process(s); |
f42806df LP |
3611 | s->reload_result = SERVICE_FAILURE_TIMEOUT; |
3612 | service_enter_running(s, SERVICE_SUCCESS); | |
e2f3b44c LP |
3613 | break; |
3614 | ||
034c6ed7 | 3615 | case SERVICE_STOP: |
f2341e0a | 3616 | log_unit_warning(UNIT(s), "Stopping timed out. Terminating."); |
f42806df | 3617 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3618 | break; |
3619 | ||
c87700a1 AZ |
3620 | case SERVICE_STOP_WATCHDOG: |
3621 | log_unit_warning(UNIT(s), "State 'stop-watchdog' timed out. Terminating."); | |
2ab2ab7b | 3622 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
db2cb23b UTL |
3623 | break; |
3624 | ||
034c6ed7 | 3625 | case SERVICE_STOP_SIGTERM: |
4819ff03 | 3626 | if (s->kill_context.send_sigkill) { |
f2341e0a | 3627 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Killing."); |
f42806df | 3628 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 3629 | } else { |
f2341e0a | 3630 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Skipping SIGKILL."); |
f42806df | 3631 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
ba035df2 LP |
3632 | } |
3633 | ||
034c6ed7 LP |
3634 | break; |
3635 | ||
3636 | case SERVICE_STOP_SIGKILL: | |
35b8ca3a | 3637 | /* Uh, we sent a SIGKILL and it is still not gone? |
034c6ed7 LP |
3638 | * Must be something we cannot kill, so let's just be |
3639 | * weirded out and continue */ | |
3640 | ||
f2341e0a | 3641 | log_unit_warning(UNIT(s), "Processes still around after SIGKILL. Ignoring."); |
f42806df | 3642 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3643 | break; |
3644 | ||
3645 | case SERVICE_STOP_POST: | |
f2341e0a | 3646 | log_unit_warning(UNIT(s), "State 'stop-post' timed out. Terminating."); |
f42806df | 3647 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
3648 | break; |
3649 | ||
3650 | case SERVICE_FINAL_SIGTERM: | |
4819ff03 | 3651 | if (s->kill_context.send_sigkill) { |
f2341e0a | 3652 | log_unit_warning(UNIT(s), "State 'stop-final-sigterm' timed out. Killing."); |
f42806df | 3653 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 3654 | } else { |
f2341e0a | 3655 | log_unit_warning(UNIT(s), "State 'stop-final-sigterm' timed out. Skipping SIGKILL. Entering failed mode."); |
f42806df | 3656 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false); |
ba035df2 LP |
3657 | } |
3658 | ||
034c6ed7 LP |
3659 | break; |
3660 | ||
3661 | case SERVICE_FINAL_SIGKILL: | |
f2341e0a | 3662 | log_unit_warning(UNIT(s), "Processes still around after final SIGKILL. Entering failed mode."); |
f42806df | 3663 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true); |
034c6ed7 LP |
3664 | break; |
3665 | ||
3666 | case SERVICE_AUTO_RESTART: | |
5ce6e7f5 ZJS |
3667 | if (s->restart_usec > 0) { |
3668 | char buf_restart[FORMAT_TIMESPAN_MAX]; | |
3669 | log_unit_info(UNIT(s), | |
3670 | "Service RestartSec=%s expired, scheduling restart.", | |
3671 | format_timespan(buf_restart, sizeof buf_restart, s->restart_usec, USEC_PER_SEC)); | |
3672 | } else | |
3673 | log_unit_info(UNIT(s), | |
3674 | "Service has no hold-off time (RestartSec=0), scheduling restart."); | |
3675 | ||
034c6ed7 LP |
3676 | service_enter_restart(s); |
3677 | break; | |
3678 | ||
3679 | default: | |
3680 | assert_not_reached("Timeout at wrong time."); | |
3681 | } | |
718db961 LP |
3682 | |
3683 | return 0; | |
3684 | } | |
3685 | ||
3686 | static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata) { | |
3687 | Service *s = SERVICE(userdata); | |
a7850c7d | 3688 | char t[FORMAT_TIMESPAN_MAX]; |
2787d83c | 3689 | usec_t watchdog_usec; |
718db961 LP |
3690 | |
3691 | assert(s); | |
3692 | assert(source == s->watchdog_event_source); | |
3693 | ||
2787d83c M |
3694 | watchdog_usec = service_get_watchdog_usec(s); |
3695 | ||
2a12e32e JK |
3696 | if (UNIT(s)->manager->service_watchdogs) { |
3697 | log_unit_error(UNIT(s), "Watchdog timeout (limit %s)!", | |
3698 | format_timespan(t, sizeof(t), watchdog_usec, 1)); | |
8bb2d17d | 3699 | |
c87700a1 | 3700 | service_enter_signal(s, SERVICE_STOP_WATCHDOG, SERVICE_FAILURE_WATCHDOG); |
2a12e32e JK |
3701 | } else |
3702 | log_unit_warning(UNIT(s), "Watchdog disabled! Ignoring watchdog timeout (limit %s)!", | |
3703 | format_timespan(t, sizeof(t), watchdog_usec, 1)); | |
842129f5 | 3704 | |
718db961 | 3705 | return 0; |
5cb5a6ff LP |
3706 | } |
3707 | ||
e3285237 LP |
3708 | static bool service_notify_message_authorized(Service *s, pid_t pid, char **tags, FDSet *fds) { |
3709 | assert(s); | |
8c47c732 | 3710 | |
c952c6ec | 3711 | if (s->notify_access == NOTIFY_NONE) { |
e3285237 LP |
3712 | log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception is disabled.", pid); |
3713 | return false; | |
3714 | } | |
3715 | ||
3716 | if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) { | |
336c6e46 | 3717 | if (s->main_pid != 0) |
e3285237 | 3718 | 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 | 3719 | else |
e3285237 LP |
3720 | 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); |
3721 | ||
3722 | return false; | |
3723 | } | |
3724 | ||
3725 | if (s->notify_access == NOTIFY_EXEC && pid != s->main_pid && pid != s->control_pid) { | |
6375bd20 | 3726 | if (s->main_pid != 0 && s->control_pid != 0) |
e3285237 | 3727 | 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 |
3728 | pid, s->main_pid, s->control_pid); |
3729 | else if (s->main_pid != 0) | |
e3285237 | 3730 | 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 | 3731 | else if (s->control_pid != 0) |
e3285237 | 3732 | 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 | 3733 | else |
e3285237 LP |
3734 | 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); |
3735 | ||
3736 | return false; | |
9711848f LP |
3737 | } |
3738 | ||
e3285237 LP |
3739 | return true; |
3740 | } | |
3741 | ||
db256aab LP |
3742 | static void service_notify_message( |
3743 | Unit *u, | |
3744 | const struct ucred *ucred, | |
3745 | char **tags, | |
3746 | FDSet *fds) { | |
3747 | ||
e3285237 LP |
3748 | Service *s = SERVICE(u); |
3749 | bool notify_dbus = false; | |
3750 | const char *e; | |
cc2b7b11 | 3751 | char **i; |
db256aab | 3752 | int r; |
e3285237 LP |
3753 | |
3754 | assert(u); | |
db256aab | 3755 | assert(ucred); |
e3285237 | 3756 | |
db256aab | 3757 | if (!service_notify_message_authorized(SERVICE(u), ucred->pid, tags, fds)) |
e3285237 LP |
3758 | return; |
3759 | ||
f1d34068 | 3760 | if (DEBUG_LOGGING) { |
9711848f LP |
3761 | _cleanup_free_ char *cc = NULL; |
3762 | ||
3763 | cc = strv_join(tags, ", "); | |
db256aab | 3764 | log_unit_debug(u, "Got notification message from PID "PID_FMT" (%s)", ucred->pid, isempty(cc) ? "n/a" : cc); |
9711848f | 3765 | } |
c952c6ec | 3766 | |
8c47c732 | 3767 | /* Interpret MAINPID= */ |
28849dba | 3768 | e = strv_find_startswith(tags, "MAINPID="); |
5e56b378 | 3769 | if (e && IN_SET(s->state, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) { |
db256aab LP |
3770 | pid_t new_main_pid; |
3771 | ||
3772 | if (parse_pid(e, &new_main_pid) < 0) | |
3773 | log_unit_warning(u, "Failed to parse MAINPID= field in notification message, ignoring: %s", e); | |
3774 | else if (!s->main_pid_known || new_main_pid != s->main_pid) { | |
3775 | ||
3776 | r = service_is_suitable_main_pid(s, new_main_pid, LOG_WARNING); | |
3777 | if (r == 0) { | |
3778 | /* The new main PID is a bit suspicous, which is OK if the sender is privileged. */ | |
3779 | ||
3780 | if (ucred->uid == 0) { | |
3781 | 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); | |
3782 | r = 1; | |
3783 | } else | |
3784 | log_unit_debug(u, "New main PID "PID_FMT" does not belong to service, refusing.", new_main_pid); | |
3785 | } | |
3786 | if (r > 0) { | |
3787 | service_set_main_pid(s, new_main_pid); | |
cdc2af3e | 3788 | |
f75f613d | 3789 | r = unit_watch_pid(UNIT(s), new_main_pid, false); |
cdc2af3e LP |
3790 | if (r < 0) |
3791 | log_unit_warning_errno(UNIT(s), r, "Failed to watch new main PID "PID_FMT" for service: %m", new_main_pid); | |
3792 | ||
db256aab LP |
3793 | notify_dbus = true; |
3794 | } | |
8c47c732 LP |
3795 | } |
3796 | } | |
3797 | ||
cc2b7b11 LP |
3798 | /* Interpret READY=/STOPPING=/RELOADING=. Last one wins. */ |
3799 | STRV_FOREACH_BACKWARDS(i, tags) { | |
308d72dc | 3800 | |
cc2b7b11 LP |
3801 | if (streq(*i, "READY=1")) { |
3802 | s->notify_state = NOTIFY_READY; | |
308d72dc | 3803 | |
cc2b7b11 LP |
3804 | /* Type=notify services inform us about completed |
3805 | * initialization with READY=1 */ | |
3806 | if (s->type == SERVICE_NOTIFY && s->state == SERVICE_START) | |
3807 | service_enter_start_post(s); | |
308d72dc | 3808 | |
cc2b7b11 LP |
3809 | /* Sending READY=1 while we are reloading informs us |
3810 | * that the reloading is complete */ | |
3811 | if (s->state == SERVICE_RELOAD && s->control_pid == 0) | |
3812 | service_enter_running(s, SERVICE_SUCCESS); | |
308d72dc | 3813 | |
cc2b7b11 LP |
3814 | notify_dbus = true; |
3815 | break; | |
308d72dc | 3816 | |
cc2b7b11 LP |
3817 | } else if (streq(*i, "RELOADING=1")) { |
3818 | s->notify_state = NOTIFY_RELOADING; | |
308d72dc | 3819 | |
cc2b7b11 LP |
3820 | if (s->state == SERVICE_RUNNING) |
3821 | service_enter_reload_by_notify(s); | |
308d72dc | 3822 | |
cc2b7b11 LP |
3823 | notify_dbus = true; |
3824 | break; | |
308d72dc | 3825 | |
cc2b7b11 LP |
3826 | } else if (streq(*i, "STOPPING=1")) { |
3827 | s->notify_state = NOTIFY_STOPPING; | |
308d72dc | 3828 | |
cc2b7b11 LP |
3829 | if (s->state == SERVICE_RUNNING) |
3830 | service_enter_stop_by_notify(s); | |
308d72dc | 3831 | |
cc2b7b11 LP |
3832 | notify_dbus = true; |
3833 | break; | |
3834 | } | |
8c47c732 LP |
3835 | } |
3836 | ||
3837 | /* Interpret STATUS= */ | |
28849dba | 3838 | e = strv_find_startswith(tags, "STATUS="); |
7f110ff9 | 3839 | if (e) { |
28849dba | 3840 | _cleanup_free_ char *t = NULL; |
8c47c732 | 3841 | |
28849dba | 3842 | if (!isempty(e)) { |
3eac1bca LP |
3843 | /* Note that this size limit check is mostly paranoia: since the datagram size we are willing |
3844 | * to process is already limited to NOTIFY_BUFFER_MAX, this limit here should never be hit. */ | |
3845 | if (strlen(e) > STATUS_TEXT_MAX) | |
3846 | log_unit_warning(u, "Status message overly long (%zu > %u), ignoring.", strlen(e), STATUS_TEXT_MAX); | |
3847 | else if (!utf8_is_valid(e)) | |
3848 | log_unit_warning(u, "Status message in notification message is not UTF-8 clean, ignoring."); | |
28849dba | 3849 | else { |
28849dba LP |
3850 | t = strdup(e); |
3851 | if (!t) | |
3852 | log_oom(); | |
3a2776bc | 3853 | } |
28849dba | 3854 | } |
8c47c732 | 3855 | |
30b5275a | 3856 | if (!streq_ptr(s->status_text, t)) { |
3b319885 | 3857 | free_and_replace(s->status_text, t); |
30b5275a | 3858 | notify_dbus = true; |
28849dba | 3859 | } |
8c47c732 | 3860 | } |
842129f5 | 3861 | |
4774e357 | 3862 | /* Interpret ERRNO= */ |
28849dba | 3863 | e = strv_find_startswith(tags, "ERRNO="); |
4774e357 MAA |
3864 | if (e) { |
3865 | int status_errno; | |
3866 | ||
2fa40742 LP |
3867 | status_errno = parse_errno(e); |
3868 | if (status_errno < 0) | |
3869 | log_unit_warning_errno(u, status_errno, | |
5e1ee764 | 3870 | "Failed to parse ERRNO= field value '%s' in notification message: %m", e); |
2fa40742 LP |
3871 | else if (s->status_errno != status_errno) { |
3872 | s->status_errno = status_errno; | |
3873 | notify_dbus = true; | |
4774e357 MAA |
3874 | } |
3875 | } | |
3876 | ||
a327431b DB |
3877 | /* Interpret EXTEND_TIMEOUT= */ |
3878 | e = strv_find_startswith(tags, "EXTEND_TIMEOUT_USEC="); | |
3879 | if (e) { | |
3880 | usec_t extend_timeout_usec; | |
3881 | if (safe_atou64(e, &extend_timeout_usec) < 0) | |
3882 | log_unit_warning(u, "Failed to parse EXTEND_TIMEOUT_USEC=%s", e); | |
3883 | else | |
3884 | service_extend_timeout(s, extend_timeout_usec); | |
3885 | } | |
3886 | ||
6f285378 | 3887 | /* Interpret WATCHDOG= */ |
1f6b4113 | 3888 | if (strv_find(tags, "WATCHDOG=1")) |
842129f5 | 3889 | service_reset_watchdog(s); |
c4e2ceae | 3890 | |
c45d11cb LP |
3891 | e = strv_find_startswith(tags, "WATCHDOG_USEC="); |
3892 | if (e) { | |
3893 | usec_t watchdog_override_usec; | |
3894 | if (safe_atou64(e, &watchdog_override_usec) < 0) | |
3895 | log_unit_warning(u, "Failed to parse WATCHDOG_USEC=%s", e); | |
3896 | else | |
95d0d8ed | 3897 | service_override_watchdog_timeout(s, watchdog_override_usec); |
c45d11cb LP |
3898 | } |
3899 | ||
e78ee06d LP |
3900 | /* Process FD store messages. Either FDSTOREREMOVE=1 for removal, or FDSTORE=1 for addition. In both cases, |
3901 | * process FDNAME= for picking the file descriptor name to use. Note that FDNAME= is required when removing | |
3902 | * fds, but optional when pushing in new fds, for compatibility reasons. */ | |
3903 | if (strv_find(tags, "FDSTOREREMOVE=1")) { | |
3904 | const char *name; | |
3905 | ||
3906 | name = strv_find_startswith(tags, "FDNAME="); | |
3907 | if (!name || !fdname_is_valid(name)) | |
3908 | log_unit_warning(u, "FDSTOREREMOVE=1 requested, but no valid file descriptor name passed, ignoring."); | |
3909 | else | |
3910 | service_remove_fd_store(s, name); | |
3911 | ||
3912 | } else if (strv_find(tags, "FDSTORE=1")) { | |
8dd4c05b LP |
3913 | const char *name; |
3914 | ||
3915 | name = strv_find_startswith(tags, "FDNAME="); | |
3916 | if (name && !fdname_is_valid(name)) { | |
3917 | log_unit_warning(u, "Passed FDNAME= name is invalid, ignoring."); | |
3918 | name = NULL; | |
3919 | } | |
3920 | ||
e78ee06d | 3921 | (void) service_add_fd_store_set(s, fds, name); |
8dd4c05b | 3922 | } |
a354329f | 3923 | |
c4e2ceae | 3924 | /* Notify clients about changed status or main pid */ |
30b5275a LP |
3925 | if (notify_dbus) |
3926 | unit_add_to_dbus_queue(u); | |
8c47c732 LP |
3927 | } |
3928 | ||
7a7821c8 | 3929 | static int service_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 3930 | Service *s = SERVICE(u); |
7a7821c8 | 3931 | uint64_t t; |
68db7a3b ZJS |
3932 | int r; |
3933 | ||
3934 | if (!s->timer_event_source) | |
3935 | return 0; | |
3936 | ||
7a7821c8 | 3937 | r = sd_event_source_get_time(s->timer_event_source, &t); |
68db7a3b ZJS |
3938 | if (r < 0) |
3939 | return r; | |
7a7821c8 LP |
3940 | if (t == USEC_INFINITY) |
3941 | return 0; | |
68db7a3b | 3942 | |
7a7821c8 | 3943 | *timeout = t; |
68db7a3b ZJS |
3944 | return 1; |
3945 | } | |
3946 | ||
05e343b7 LP |
3947 | static void service_bus_name_owner_change( |
3948 | Unit *u, | |
3949 | const char *name, | |
3950 | const char *old_owner, | |
3951 | const char *new_owner) { | |
3952 | ||
3953 | Service *s = SERVICE(u); | |
718db961 | 3954 | int r; |
05e343b7 LP |
3955 | |
3956 | assert(s); | |
3957 | assert(name); | |
3958 | ||
3959 | assert(streq(s->bus_name, name)); | |
3960 | assert(old_owner || new_owner); | |
3961 | ||
3962 | if (old_owner && new_owner) | |
f2341e0a | 3963 | log_unit_debug(u, "D-Bus name %s changed owner from %s to %s", name, old_owner, new_owner); |
05e343b7 | 3964 | else if (old_owner) |
f2341e0a | 3965 | log_unit_debug(u, "D-Bus name %s no longer registered by %s", name, old_owner); |
05e343b7 | 3966 | else |
f2341e0a | 3967 | log_unit_debug(u, "D-Bus name %s now registered by %s", name, new_owner); |
05e343b7 LP |
3968 | |
3969 | s->bus_name_good = !!new_owner; | |
3970 | ||
d8ccf5fd DM |
3971 | /* Track the current owner, so we can reconstruct changes after a daemon reload */ |
3972 | r = free_and_strdup(&s->bus_name_owner, new_owner); | |
3973 | if (r < 0) { | |
3974 | log_unit_error_errno(u, r, "Unable to set new bus name owner %s: %m", new_owner); | |
3975 | return; | |
3976 | } | |
3977 | ||
05e343b7 LP |
3978 | if (s->type == SERVICE_DBUS) { |
3979 | ||
3980 | /* service_enter_running() will figure out what to | |
3981 | * do */ | |
3982 | if (s->state == SERVICE_RUNNING) | |
f42806df | 3983 | service_enter_running(s, SERVICE_SUCCESS); |
05e343b7 LP |
3984 | else if (s->state == SERVICE_START && new_owner) |
3985 | service_enter_start_post(s); | |
3986 | ||
3987 | } else if (new_owner && | |
3988 | s->main_pid <= 0 && | |
a6951a50 LP |
3989 | IN_SET(s->state, |
3990 | SERVICE_START, | |
3991 | SERVICE_START_POST, | |
3992 | SERVICE_RUNNING, | |
3993 | SERVICE_RELOAD)) { | |
05e343b7 | 3994 | |
4afd3348 | 3995 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; |
718db961 | 3996 | pid_t pid; |
05e343b7 | 3997 | |
718db961 | 3998 | /* Try to acquire PID from bus service */ |
05e343b7 | 3999 | |
056f95d0 | 4000 | r = sd_bus_get_name_creds(u->manager->api_bus, name, SD_BUS_CREDS_PID, &creds); |
5b12334d LP |
4001 | if (r >= 0) |
4002 | r = sd_bus_creds_get_pid(creds, &pid); | |
718db961 | 4003 | if (r >= 0) { |
7c102d60 | 4004 | log_unit_debug(u, "D-Bus name %s is now owned by process " PID_FMT, name, pid); |
05e343b7 | 4005 | |
718db961 | 4006 | service_set_main_pid(s, pid); |
f75f613d | 4007 | unit_watch_pid(UNIT(s), pid, false); |
718db961 | 4008 | } |
7400b9d2 | 4009 | } |
05e343b7 LP |
4010 | } |
4011 | ||
16115b0a | 4012 | int service_set_socket_fd(Service *s, int fd, Socket *sock, bool selinux_context_net) { |
79a98c60 LP |
4013 | _cleanup_free_ char *peer = NULL; |
4014 | int r; | |
57020a3a | 4015 | |
4f2d528d LP |
4016 | assert(s); |
4017 | assert(fd >= 0); | |
4018 | ||
7f2fbbff LP |
4019 | /* This is called by the socket code when instantiating a new service for a stream socket and the socket needs |
4020 | * to be configured. We take ownership of the passed fd on success. */ | |
4f2d528d | 4021 | |
1124fe6f | 4022 | if (UNIT(s)->load_state != UNIT_LOADED) |
4f2d528d LP |
4023 | return -EINVAL; |
4024 | ||
4025 | if (s->socket_fd >= 0) | |
4026 | return -EBUSY; | |
4027 | ||
4028 | if (s->state != SERVICE_DEAD) | |
4029 | return -EAGAIN; | |
4030 | ||
366b7db4 | 4031 | if (getpeername_pretty(fd, true, &peer) >= 0) { |
79a98c60 LP |
4032 | |
4033 | if (UNIT(s)->description) { | |
4034 | _cleanup_free_ char *a; | |
4035 | ||
605405c6 | 4036 | a = strjoin(UNIT(s)->description, " (", peer, ")"); |
79a98c60 LP |
4037 | if (!a) |
4038 | return -ENOMEM; | |
4039 | ||
4040 | r = unit_set_description(UNIT(s), a); | |
4041 | } else | |
4042 | r = unit_set_description(UNIT(s), peer); | |
4043 | ||
4044 | if (r < 0) | |
4045 | return r; | |
4046 | } | |
4047 | ||
eef85c4a | 4048 | r = unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false, UNIT_DEPENDENCY_IMPLICIT); |
7f2fbbff LP |
4049 | if (r < 0) |
4050 | return r; | |
4051 | ||
4f2d528d | 4052 | s->socket_fd = fd; |
16115b0a | 4053 | s->socket_fd_selinux_context_net = selinux_context_net; |
6cf6bbc2 | 4054 | |
7f7d01ed | 4055 | unit_ref_set(&s->accept_socket, UNIT(s), UNIT(sock)); |
7f2fbbff | 4056 | return 0; |
4f2d528d LP |
4057 | } |
4058 | ||
fdf20a31 | 4059 | static void service_reset_failed(Unit *u) { |
5632e374 LP |
4060 | Service *s = SERVICE(u); |
4061 | ||
4062 | assert(s); | |
4063 | ||
fdf20a31 | 4064 | if (s->state == SERVICE_FAILED) |
5632e374 LP |
4065 | service_set_state(s, SERVICE_DEAD); |
4066 | ||
f42806df LP |
4067 | s->result = SERVICE_SUCCESS; |
4068 | s->reload_result = SERVICE_SUCCESS; | |
7a0019d3 LP |
4069 | s->n_restarts = 0; |
4070 | s->flush_n_restarts = false; | |
5632e374 LP |
4071 | } |
4072 | ||
718db961 | 4073 | static int service_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
8a0867d6 | 4074 | Service *s = SERVICE(u); |
41efeaec | 4075 | |
a6951a50 LP |
4076 | assert(s); |
4077 | ||
814cc562 | 4078 | return unit_kill_common(u, who, signo, s->main_pid, s->control_pid, error); |
8a0867d6 LP |
4079 | } |
4080 | ||
291d565a LP |
4081 | static int service_main_pid(Unit *u) { |
4082 | Service *s = SERVICE(u); | |
4083 | ||
4084 | assert(s); | |
4085 | ||
4086 | return s->main_pid; | |
4087 | } | |
4088 | ||
4089 | static int service_control_pid(Unit *u) { | |
4090 | Service *s = SERVICE(u); | |
4091 | ||
4092 | assert(s); | |
4093 | ||
4094 | return s->control_pid; | |
4095 | } | |
4096 | ||
bb2c7685 LP |
4097 | static bool service_needs_console(Unit *u) { |
4098 | Service *s = SERVICE(u); | |
4099 | ||
4100 | assert(s); | |
4101 | ||
4102 | /* We provide our own implementation of this here, instead of relying of the generic implementation | |
4103 | * unit_needs_console() provides, since we want to return false if we are in SERVICE_EXITED state. */ | |
4104 | ||
4105 | if (!exec_context_may_touch_console(&s->exec_context)) | |
4106 | return false; | |
4107 | ||
4108 | return IN_SET(s->state, | |
4109 | SERVICE_START_PRE, | |
4110 | SERVICE_START, | |
4111 | SERVICE_START_POST, | |
4112 | SERVICE_RUNNING, | |
4113 | SERVICE_RELOAD, | |
4114 | SERVICE_STOP, | |
c87700a1 | 4115 | SERVICE_STOP_WATCHDOG, |
bb2c7685 LP |
4116 | SERVICE_STOP_SIGTERM, |
4117 | SERVICE_STOP_SIGKILL, | |
4118 | SERVICE_STOP_POST, | |
4119 | SERVICE_FINAL_SIGTERM, | |
4120 | SERVICE_FINAL_SIGKILL); | |
4121 | } | |
4122 | ||
7af67e9a LP |
4123 | static int service_exit_status(Unit *u) { |
4124 | Service *s = SERVICE(u); | |
4125 | ||
4126 | assert(u); | |
4127 | ||
4128 | if (s->main_exec_status.pid <= 0 || | |
4129 | !dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) | |
4130 | return -ENODATA; | |
4131 | ||
4132 | if (s->main_exec_status.code != CLD_EXITED) | |
4133 | return -EBADE; | |
4134 | ||
4135 | return s->main_exec_status.status; | |
4136 | } | |
4137 | ||
94f04347 | 4138 | static const char* const service_restart_table[_SERVICE_RESTART_MAX] = { |
525ee6f4 LP |
4139 | [SERVICE_RESTART_NO] = "no", |
4140 | [SERVICE_RESTART_ON_SUCCESS] = "on-success", | |
50caaedb | 4141 | [SERVICE_RESTART_ON_FAILURE] = "on-failure", |
6cfe2fde | 4142 | [SERVICE_RESTART_ON_ABNORMAL] = "on-abnormal", |
dc99a976 | 4143 | [SERVICE_RESTART_ON_WATCHDOG] = "on-watchdog", |
50caaedb | 4144 | [SERVICE_RESTART_ON_ABORT] = "on-abort", |
6cfe2fde | 4145 | [SERVICE_RESTART_ALWAYS] = "always", |
94f04347 LP |
4146 | }; |
4147 | ||
4148 | DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart); | |
4149 | ||
4150 | static const char* const service_type_table[_SERVICE_TYPE_MAX] = { | |
94f04347 | 4151 | [SERVICE_SIMPLE] = "simple", |
0d624a78 | 4152 | [SERVICE_FORKING] = "forking", |
34e9ba66 | 4153 | [SERVICE_ONESHOT] = "oneshot", |
8c47c732 | 4154 | [SERVICE_DBUS] = "dbus", |
f2b68789 | 4155 | [SERVICE_NOTIFY] = "notify", |
5686391b LP |
4156 | [SERVICE_IDLE] = "idle", |
4157 | [SERVICE_EXEC] = "exec", | |
94f04347 LP |
4158 | }; |
4159 | ||
4160 | DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType); | |
4161 | ||
e537352b | 4162 | static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = { |
94f04347 LP |
4163 | [SERVICE_EXEC_START_PRE] = "ExecStartPre", |
4164 | [SERVICE_EXEC_START] = "ExecStart", | |
4165 | [SERVICE_EXEC_START_POST] = "ExecStartPost", | |
4166 | [SERVICE_EXEC_RELOAD] = "ExecReload", | |
4167 | [SERVICE_EXEC_STOP] = "ExecStop", | |
4168 | [SERVICE_EXEC_STOP_POST] = "ExecStopPost", | |
4169 | }; | |
4170 | ||
4171 | DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand); | |
4172 | ||
308d72dc LP |
4173 | static const char* const notify_state_table[_NOTIFY_STATE_MAX] = { |
4174 | [NOTIFY_UNKNOWN] = "unknown", | |
4175 | [NOTIFY_READY] = "ready", | |
4176 | [NOTIFY_RELOADING] = "reloading", | |
4177 | [NOTIFY_STOPPING] = "stopping", | |
4178 | }; | |
4179 | ||
4180 | DEFINE_STRING_TABLE_LOOKUP(notify_state, NotifyState); | |
4181 | ||
f42806df LP |
4182 | static const char* const service_result_table[_SERVICE_RESULT_MAX] = { |
4183 | [SERVICE_SUCCESS] = "success", | |
4184 | [SERVICE_FAILURE_RESOURCES] = "resources", | |
c35755fb | 4185 | [SERVICE_FAILURE_PROTOCOL] = "protocol", |
f42806df LP |
4186 | [SERVICE_FAILURE_TIMEOUT] = "timeout", |
4187 | [SERVICE_FAILURE_EXIT_CODE] = "exit-code", | |
4188 | [SERVICE_FAILURE_SIGNAL] = "signal", | |
bb242b7b | 4189 | [SERVICE_FAILURE_CORE_DUMP] = "core-dump", |
8d1b002a | 4190 | [SERVICE_FAILURE_WATCHDOG] = "watchdog", |
07299350 | 4191 | [SERVICE_FAILURE_START_LIMIT_HIT] = "start-limit-hit", |
afcfaa69 | 4192 | [SERVICE_FAILURE_OOM_KILL] = "oom-kill", |
f42806df LP |
4193 | }; |
4194 | ||
4195 | DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult); | |
4196 | ||
87f0e418 | 4197 | const UnitVTable service_vtable = { |
7d17cfbc | 4198 | .object_size = sizeof(Service), |
718db961 LP |
4199 | .exec_context_offset = offsetof(Service, exec_context), |
4200 | .cgroup_context_offset = offsetof(Service, cgroup_context), | |
4201 | .kill_context_offset = offsetof(Service, kill_context), | |
613b411c | 4202 | .exec_runtime_offset = offsetof(Service, exec_runtime), |
29206d46 | 4203 | .dynamic_creds_offset = offsetof(Service, dynamic_creds), |
3ef63c31 | 4204 | |
f975e971 LP |
4205 | .sections = |
4206 | "Unit\0" | |
4207 | "Service\0" | |
4208 | "Install\0", | |
4ad49000 | 4209 | .private_section = "Service", |
71645aca | 4210 | |
1d9cc876 LP |
4211 | .can_transient = true, |
4212 | .can_delegate = true, | |
4213 | ||
034c6ed7 LP |
4214 | .init = service_init, |
4215 | .done = service_done, | |
a16e1123 | 4216 | .load = service_load, |
a354329f | 4217 | .release_resources = service_release_resources, |
a16e1123 LP |
4218 | |
4219 | .coldplug = service_coldplug, | |
034c6ed7 | 4220 | |
5cb5a6ff LP |
4221 | .dump = service_dump, |
4222 | ||
4223 | .start = service_start, | |
4224 | .stop = service_stop, | |
4225 | .reload = service_reload, | |
4226 | ||
034c6ed7 LP |
4227 | .can_reload = service_can_reload, |
4228 | ||
8a0867d6 LP |
4229 | .kill = service_kill, |
4230 | ||
a16e1123 LP |
4231 | .serialize = service_serialize, |
4232 | .deserialize_item = service_deserialize_item, | |
4233 | ||
5cb5a6ff | 4234 | .active_state = service_active_state, |
10a94420 | 4235 | .sub_state_to_string = service_sub_state_to_string, |
5cb5a6ff | 4236 | |
deb4e708 MK |
4237 | .will_restart = service_will_restart, |
4238 | ||
f2f725e5 | 4239 | .may_gc = service_may_gc, |
701cc384 | 4240 | |
034c6ed7 | 4241 | .sigchld_event = service_sigchld_event, |
2c4104f0 | 4242 | |
fdf20a31 | 4243 | .reset_failed = service_reset_failed, |
5632e374 | 4244 | |
4ad49000 | 4245 | .notify_cgroup_empty = service_notify_cgroup_empty_event, |
afcfaa69 | 4246 | .notify_cgroup_oom = service_notify_cgroup_oom_event, |
8c47c732 | 4247 | .notify_message = service_notify_message, |
8e274523 | 4248 | |
291d565a LP |
4249 | .main_pid = service_main_pid, |
4250 | .control_pid = service_control_pid, | |
4251 | ||
05e343b7 | 4252 | .bus_name_owner_change = service_bus_name_owner_change, |
05e343b7 | 4253 | |
718db961 | 4254 | .bus_vtable = bus_service_vtable, |
74c964d3 LP |
4255 | .bus_set_property = bus_service_set_property, |
4256 | .bus_commit_properties = bus_service_commit_properties, | |
4139c1b2 | 4257 | |
68db7a3b | 4258 | .get_timeout = service_get_timeout, |
bb2c7685 | 4259 | .needs_console = service_needs_console, |
7af67e9a | 4260 | .exit_status = service_exit_status, |
718db961 | 4261 | |
c6918296 MS |
4262 | .status_message_formats = { |
4263 | .starting_stopping = { | |
4264 | [0] = "Starting %s...", | |
4265 | [1] = "Stopping %s...", | |
4266 | }, | |
4267 | .finished_start_job = { | |
4268 | [JOB_DONE] = "Started %s.", | |
4269 | [JOB_FAILED] = "Failed to start %s.", | |
c6918296 MS |
4270 | }, |
4271 | .finished_stop_job = { | |
4272 | [JOB_DONE] = "Stopped %s.", | |
4273 | [JOB_FAILED] = "Stopped (with error) %s.", | |
c6918296 MS |
4274 | }, |
4275 | }, | |
5cb5a6ff | 4276 | }; |