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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
a7334b09 | 2 | |
5cb5a6ff | 3 | #include <errno.h> |
be1adc27 | 4 | #include <math.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" | |
f461a28d | 16 | #include "chase.h" |
28db6fbf | 17 | #include "constants.h" |
4139c1b2 | 18 | #include "dbus-service.h" |
6fcbec6f | 19 | #include "dbus-unit.h" |
f2eb0c50 | 20 | #include "devnum-util.h" |
4d1a6904 | 21 | #include "env-util.h" |
4f5dd394 LP |
22 | #include "escape.h" |
23 | #include "exit-status.h" | |
3ffd4af2 | 24 | #include "fd-util.h" |
a5c32cff | 25 | #include "fileio.h" |
f97b34a6 | 26 | #include "format-util.h" |
4f5dd394 LP |
27 | #include "load-dropin.h" |
28 | #include "load-fragment.h" | |
29 | #include "log.h" | |
30 | #include "manager.h" | |
d52b8493 | 31 | #include "missing_audit.h" |
cd48e23f | 32 | #include "open-file.h" |
6bedfcbb | 33 | #include "parse-util.h" |
4f5dd394 | 34 | #include "path-util.h" |
0b452006 | 35 | #include "process-util.h" |
5918a933 | 36 | #include "random-util.h" |
8017ed7e | 37 | #include "selinux-util.h" |
d68c645b | 38 | #include "serialize.h" |
3ffd4af2 | 39 | #include "service.h" |
24882e06 | 40 | #include "signal-util.h" |
4f5dd394 | 41 | #include "special.h" |
e266c068 | 42 | #include "stdio-util.h" |
8b43440b | 43 | #include "string-table.h" |
07630cea | 44 | #include "string-util.h" |
4f5dd394 LP |
45 | #include "strv.h" |
46 | #include "unit-name.h" | |
4f5dd394 LP |
47 | #include "unit.h" |
48 | #include "utf8.h" | |
034c6ed7 | 49 | |
edbf8984 ZJS |
50 | #define service_spawn(...) service_spawn_internal(__func__, __VA_ARGS__) |
51 | ||
acbb0225 | 52 | static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = { |
87f0e418 | 53 | [SERVICE_DEAD] = UNIT_INACTIVE, |
31cd5f63 | 54 | [SERVICE_CONDITION] = UNIT_ACTIVATING, |
87f0e418 LP |
55 | [SERVICE_START_PRE] = UNIT_ACTIVATING, |
56 | [SERVICE_START] = UNIT_ACTIVATING, | |
57 | [SERVICE_START_POST] = UNIT_ACTIVATING, | |
58 | [SERVICE_RUNNING] = UNIT_ACTIVE, | |
80876c20 | 59 | [SERVICE_EXITED] = UNIT_ACTIVE, |
032ff4af | 60 | [SERVICE_RELOAD] = UNIT_RELOADING, |
3bd28bf7 LP |
61 | [SERVICE_RELOAD_SIGNAL] = UNIT_RELOADING, |
62 | [SERVICE_RELOAD_NOTIFY] = UNIT_RELOADING, | |
87f0e418 | 63 | [SERVICE_STOP] = UNIT_DEACTIVATING, |
c87700a1 | 64 | [SERVICE_STOP_WATCHDOG] = UNIT_DEACTIVATING, |
87f0e418 LP |
65 | [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, |
66 | [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
67 | [SERVICE_STOP_POST] = UNIT_DEACTIVATING, | |
bf760801 | 68 | [SERVICE_FINAL_WATCHDOG] = UNIT_DEACTIVATING, |
87f0e418 LP |
69 | [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, |
70 | [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
fdf20a31 | 71 | [SERVICE_FAILED] = UNIT_FAILED, |
a1d31573 LP |
72 | [SERVICE_DEAD_BEFORE_AUTO_RESTART] = UNIT_INACTIVE, |
73 | [SERVICE_FAILED_BEFORE_AUTO_RESTART] = UNIT_FAILED, | |
b9c1883a | 74 | [SERVICE_DEAD_RESOURCES_PINNED] = UNIT_INACTIVE, |
4c2f5842 | 75 | [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING, |
09d04ad3 | 76 | [SERVICE_AUTO_RESTART_QUEUED] = UNIT_ACTIVATING, |
4c2f5842 | 77 | [SERVICE_CLEANING] = UNIT_MAINTENANCE, |
034c6ed7 | 78 | }; |
5cb5a6ff | 79 | |
e056b01d LP |
80 | /* For Type=idle we never want to delay any other jobs, hence we |
81 | * consider idle jobs active as soon as we start working on them */ | |
82 | static const UnitActiveState state_translation_table_idle[_SERVICE_STATE_MAX] = { | |
83 | [SERVICE_DEAD] = UNIT_INACTIVE, | |
31cd5f63 | 84 | [SERVICE_CONDITION] = UNIT_ACTIVE, |
e056b01d LP |
85 | [SERVICE_START_PRE] = UNIT_ACTIVE, |
86 | [SERVICE_START] = UNIT_ACTIVE, | |
87 | [SERVICE_START_POST] = UNIT_ACTIVE, | |
88 | [SERVICE_RUNNING] = UNIT_ACTIVE, | |
89 | [SERVICE_EXITED] = UNIT_ACTIVE, | |
90 | [SERVICE_RELOAD] = UNIT_RELOADING, | |
3bd28bf7 LP |
91 | [SERVICE_RELOAD_SIGNAL] = UNIT_RELOADING, |
92 | [SERVICE_RELOAD_NOTIFY] = UNIT_RELOADING, | |
e056b01d | 93 | [SERVICE_STOP] = UNIT_DEACTIVATING, |
c87700a1 | 94 | [SERVICE_STOP_WATCHDOG] = UNIT_DEACTIVATING, |
e056b01d LP |
95 | [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, |
96 | [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
97 | [SERVICE_STOP_POST] = UNIT_DEACTIVATING, | |
bf760801 | 98 | [SERVICE_FINAL_WATCHDOG] = UNIT_DEACTIVATING, |
e056b01d LP |
99 | [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, |
100 | [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
101 | [SERVICE_FAILED] = UNIT_FAILED, | |
a1d31573 LP |
102 | [SERVICE_DEAD_BEFORE_AUTO_RESTART] = UNIT_INACTIVE, |
103 | [SERVICE_FAILED_BEFORE_AUTO_RESTART] = UNIT_FAILED, | |
b9c1883a | 104 | [SERVICE_DEAD_RESOURCES_PINNED] = UNIT_INACTIVE, |
4c2f5842 | 105 | [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING, |
09d04ad3 | 106 | [SERVICE_AUTO_RESTART_QUEUED] = UNIT_ACTIVATING, |
4c2f5842 | 107 | [SERVICE_CLEANING] = UNIT_MAINTENANCE, |
e056b01d LP |
108 | }; |
109 | ||
5686391b | 110 | static int service_dispatch_inotify_io(sd_event_source *source, int fd, uint32_t events, void *userdata); |
718db961 LP |
111 | static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); |
112 | static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata); | |
5686391b | 113 | static int service_dispatch_exec_io(sd_event_source *source, int fd, uint32_t events, void *userdata); |
718db961 | 114 | |
842129f5 | 115 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f); |
308d72dc | 116 | static void service_enter_reload_by_notify(Service *s); |
842129f5 | 117 | |
a16e1123 LP |
118 | static void service_init(Unit *u) { |
119 | Service *s = SERVICE(u); | |
120 | ||
121 | assert(u); | |
ac155bb8 | 122 | assert(u->load_state == UNIT_STUB); |
a16e1123 | 123 | |
c9e120e0 LP |
124 | s->timeout_start_usec = u->manager->defaults.timeout_start_usec; |
125 | s->timeout_stop_usec = u->manager->defaults.timeout_stop_usec; | |
126 | s->timeout_abort_usec = u->manager->defaults.timeout_abort_usec; | |
127 | s->timeout_abort_set = u->manager->defaults.timeout_abort_set; | |
128 | s->restart_usec = u->manager->defaults.restart_usec; | |
e9f17fa8 | 129 | s->restart_max_delay_usec = USEC_INFINITY; |
36c16a7c | 130 | s->runtime_max_usec = USEC_INFINITY; |
0b86feac | 131 | s->type = _SERVICE_TYPE_INVALID; |
254d1313 ZJS |
132 | s->socket_fd = -EBADF; |
133 | s->stdin_fd = s->stdout_fd = s->stderr_fd = -EBADF; | |
3185a36b | 134 | s->guess_main_pid = true; |
c79ab77c LP |
135 | s->main_pid = PIDREF_NULL; |
136 | s->control_pid = PIDREF_NULL; | |
a16e1123 | 137 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; |
00f5ad93 LP |
138 | |
139 | s->exec_context.keyring_mode = MANAGER_IS_SYSTEM(u->manager) ? | |
140 | EXEC_KEYRING_PRIVATE : EXEC_KEYRING_INHERIT; | |
aa8c4bbf | 141 | |
19dff691 MY |
142 | s->notify_access_override = _NOTIFY_ACCESS_INVALID; |
143 | ||
aa8c4bbf | 144 | s->watchdog_original_usec = USEC_INFINITY; |
afcfaa69 LP |
145 | |
146 | s->oom_policy = _OOM_POLICY_INVALID; | |
3bd28bf7 LP |
147 | s->reload_begin_usec = USEC_INFINITY; |
148 | s->reload_signal = SIGHUP; | |
b9c1883a LP |
149 | |
150 | s->fd_store_preserve_mode = EXEC_PRESERVE_RESTART; | |
a16e1123 LP |
151 | } |
152 | ||
5e94833f LP |
153 | static void service_unwatch_control_pid(Service *s) { |
154 | assert(s); | |
ea1e0bf1 | 155 | unit_unwatch_pidref_done(UNIT(s), &s->control_pid); |
5e94833f LP |
156 | } |
157 | ||
158 | static void service_unwatch_main_pid(Service *s) { | |
159 | assert(s); | |
ea1e0bf1 | 160 | unit_unwatch_pidref_done(UNIT(s), &s->main_pid); |
5e94833f LP |
161 | } |
162 | ||
3e52541e MS |
163 | static void service_unwatch_pid_file(Service *s) { |
164 | if (!s->pid_file_pathspec) | |
165 | return; | |
166 | ||
f2341e0a | 167 | log_unit_debug(UNIT(s), "Stopping watch for PID file %s", s->pid_file_pathspec->path); |
718db961 | 168 | path_spec_unwatch(s->pid_file_pathspec); |
3e52541e | 169 | path_spec_done(s->pid_file_pathspec); |
a1e58e8e | 170 | s->pid_file_pathspec = mfree(s->pid_file_pathspec); |
3e52541e MS |
171 | } |
172 | ||
b1f6901d | 173 | static int service_set_main_pidref(Service *s, PidRef *pidref) { |
6774be42 LP |
174 | int r; |
175 | ||
5925dd3c LP |
176 | assert(s); |
177 | ||
b1f6901d LP |
178 | /* Takes ownership of the specified pidref on success, but not on failure. */ |
179 | ||
180 | if (!pidref_is_set(pidref)) | |
181 | return -ESRCH; | |
182 | ||
183 | if (pidref->pid <= 1) | |
5925dd3c LP |
184 | return -EINVAL; |
185 | ||
a7a87769 | 186 | if (pidref_is_self(pidref)) |
5925dd3c LP |
187 | return -EINVAL; |
188 | ||
3b74b495 | 189 | if (pidref_equal(&s->main_pid, pidref) && s->main_pid_known) { |
b1f6901d | 190 | pidref_done(pidref); |
7400b9d2 | 191 | return 0; |
b1f6901d | 192 | } |
7400b9d2 | 193 | |
3b74b495 | 194 | if (!pidref_equal(&s->main_pid, pidref)) { |
7400b9d2 | 195 | service_unwatch_main_pid(s); |
b1f6901d | 196 | exec_status_start(&s->main_exec_status, pidref->pid); |
7400b9d2 | 197 | } |
41efeaec | 198 | |
b1f6901d | 199 | s->main_pid = TAKE_PIDREF(*pidref); |
6dfa5494 LP |
200 | s->main_pid_known = true; |
201 | ||
6774be42 LP |
202 | r = pidref_is_my_child(&s->main_pid); |
203 | if (r < 0) | |
204 | log_unit_warning_errno(UNIT(s), r, "Can't determine if process "PID_FMT" is our child, assuming it is not: %m", s->main_pid.pid); | |
205 | else if (r == 0) | |
b1f6901d | 206 | log_unit_warning(UNIT(s), "Supervising process "PID_FMT" which is not our child. We'll most likely not notice when it exits.", s->main_pid.pid); |
5925dd3c | 207 | |
6774be42 | 208 | s->main_pid_alien = r <= 0; |
5925dd3c LP |
209 | return 0; |
210 | } | |
211 | ||
81a1d6d6 | 212 | void service_release_socket_fd(Service *s) { |
4f2d528d LP |
213 | assert(s); |
214 | ||
c25fac9a LP |
215 | if (s->socket_fd < 0 && !UNIT_ISSET(s->accept_socket) && !s->socket_peer) |
216 | return; | |
217 | ||
218 | log_unit_debug(UNIT(s), "Closing connection socket."); | |
219 | ||
5cc3985e | 220 | /* Undo the effect of service_set_socket_fd(). */ |
4f2d528d | 221 | |
5cc3985e | 222 | s->socket_fd = asynchronous_close(s->socket_fd); |
6cf6bbc2 | 223 | |
5cc3985e LP |
224 | if (UNIT_ISSET(s->accept_socket)) { |
225 | socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket))); | |
226 | unit_ref_unset(&s->accept_socket); | |
227 | } | |
3fabebf4 LP |
228 | |
229 | s->socket_peer = socket_peer_unref(s->socket_peer); | |
6cf6bbc2 LP |
230 | } |
231 | ||
19dff691 MY |
232 | static void service_override_notify_access(Service *s, NotifyAccess notify_access_override) { |
233 | assert(s); | |
234 | ||
235 | s->notify_access_override = notify_access_override; | |
236 | ||
237 | log_unit_debug(UNIT(s), "notify_access=%s", notify_access_to_string(s->notify_access)); | |
238 | log_unit_debug(UNIT(s), "notify_access_override=%s", notify_access_to_string(s->notify_access_override)); | |
239 | } | |
240 | ||
a6927d7f MO |
241 | static void service_stop_watchdog(Service *s) { |
242 | assert(s); | |
243 | ||
5dcadb4c | 244 | s->watchdog_event_source = sd_event_source_disable_unref(s->watchdog_event_source); |
842129f5 | 245 | s->watchdog_timestamp = DUAL_TIMESTAMP_NULL; |
a6927d7f MO |
246 | } |
247 | ||
842129f5 | 248 | static void service_start_watchdog(Service *s) { |
2787d83c | 249 | usec_t watchdog_usec; |
9fb1cdb4 | 250 | int r; |
bb242b7b MO |
251 | |
252 | assert(s); | |
253 | ||
2787d83c | 254 | watchdog_usec = service_get_watchdog_usec(s); |
0da36375 | 255 | if (!timestamp_is_set(watchdog_usec)) { |
9fb1cdb4 | 256 | service_stop_watchdog(s); |
bb242b7b | 257 | return; |
9fb1cdb4 | 258 | } |
bb242b7b | 259 | |
718db961 | 260 | if (s->watchdog_event_source) { |
2787d83c | 261 | r = sd_event_source_set_time(s->watchdog_event_source, usec_add(s->watchdog_timestamp.monotonic, watchdog_usec)); |
718db961 | 262 | if (r < 0) { |
f2341e0a | 263 | log_unit_warning_errno(UNIT(s), r, "Failed to reset watchdog timer: %m"); |
718db961 LP |
264 | return; |
265 | } | |
266 | ||
842129f5 | 267 | r = sd_event_source_set_enabled(s->watchdog_event_source, SD_EVENT_ONESHOT); |
c4ef3317 | 268 | } else { |
6a0f1f6d LP |
269 | r = sd_event_add_time( |
270 | UNIT(s)->manager->event, | |
271 | &s->watchdog_event_source, | |
272 | CLOCK_MONOTONIC, | |
2787d83c | 273 | usec_add(s->watchdog_timestamp.monotonic, watchdog_usec), 0, |
6a0f1f6d | 274 | service_dispatch_watchdog, s); |
c4ef3317 | 275 | if (r < 0) { |
f2341e0a | 276 | log_unit_warning_errno(UNIT(s), r, "Failed to add watchdog timer: %m"); |
c4ef3317 LP |
277 | return; |
278 | } | |
279 | ||
7dfbe2e3 TG |
280 | (void) sd_event_source_set_description(s->watchdog_event_source, "service-watchdog"); |
281 | ||
c4ef3317 LP |
282 | /* Let's process everything else which might be a sign |
283 | * of living before we consider a service died. */ | |
d42b61d2 | 284 | r = sd_event_source_set_priority(s->watchdog_event_source, EVENT_PRIORITY_SERVICE_WATCHDOG); |
c4ef3317 | 285 | } |
bb242b7b | 286 | if (r < 0) |
f2341e0a | 287 | log_unit_warning_errno(UNIT(s), r, "Failed to install watchdog timer: %m"); |
bb242b7b MO |
288 | } |
289 | ||
5171356e MY |
290 | usec_t service_restart_usec_next(Service *s) { |
291 | unsigned n_restarts_next; | |
be1adc27 MY |
292 | |
293 | assert(s); | |
294 | ||
0c59d2e4 | 295 | /* When the service state is in SERVICE_*_BEFORE_AUTO_RESTART or SERVICE_AUTO_RESTART, we still need |
ba5e342c MY |
296 | * to add 1 to s->n_restarts manually, because s->n_restarts is not updated until a restart job is |
297 | * enqueued, i.e. state has transitioned to SERVICE_AUTO_RESTART_QUEUED. */ | |
298 | n_restarts_next = s->n_restarts + (s->state == SERVICE_AUTO_RESTART_QUEUED ? 0 : 1); | |
be1adc27 | 299 | |
5171356e | 300 | if (n_restarts_next <= 1 || |
be1adc27 | 301 | s->restart_steps == 0 || |
ea792cac | 302 | s->restart_usec == 0 || |
e9f17fa8 MY |
303 | s->restart_max_delay_usec == USEC_INFINITY || |
304 | s->restart_usec >= s->restart_max_delay_usec) | |
fe3d33c1 MY |
305 | return s->restart_usec; |
306 | ||
307 | if (n_restarts_next > s->restart_steps) | |
308 | return s->restart_max_delay_usec; | |
309 | ||
310 | /* Enforced in service_verify() and above */ | |
311 | assert(s->restart_max_delay_usec > s->restart_usec); | |
312 | ||
313 | /* r_i / r_0 = (r_n / r_0) ^ (i / n) | |
314 | * where, | |
315 | * r_0 : initial restart usec (s->restart_usec), | |
316 | * r_i : i-th restart usec (value), | |
317 | * r_n : maximum restart usec (s->restart_max_delay_usec), | |
318 | * i : index of the next step (n_restarts_next - 1) | |
319 | * n : num maximum steps (s->restart_steps) */ | |
320 | return (usec_t) (s->restart_usec * powl((long double) s->restart_max_delay_usec / s->restart_usec, | |
321 | (long double) (n_restarts_next - 1) / s->restart_steps)); | |
be1adc27 MY |
322 | } |
323 | ||
ec35a7f6 LP |
324 | static void service_extend_event_source_timeout(Service *s, sd_event_source *source, usec_t extended) { |
325 | usec_t current; | |
326 | int r; | |
327 | ||
a327431b DB |
328 | assert(s); |
329 | ||
ec35a7f6 LP |
330 | /* Extends the specified event source timer to at least the specified time, unless it is already later |
331 | * anyway. */ | |
a327431b | 332 | |
ec35a7f6 LP |
333 | if (!source) |
334 | return; | |
a327431b | 335 | |
ec35a7f6 LP |
336 | r = sd_event_source_get_time(source, ¤t); |
337 | if (r < 0) { | |
338 | const char *desc; | |
339 | (void) sd_event_source_get_description(s->timer_event_source, &desc); | |
340 | log_unit_warning_errno(UNIT(s), r, "Failed to retrieve timeout time for event source '%s', ignoring: %m", strna(desc)); | |
341 | return; | |
342 | } | |
a327431b | 343 | |
ec35a7f6 LP |
344 | if (current >= extended) /* Current timeout is already longer, ignore this. */ |
345 | return; | |
a327431b | 346 | |
ec35a7f6 LP |
347 | r = sd_event_source_set_time(source, extended); |
348 | if (r < 0) { | |
349 | const char *desc; | |
350 | (void) sd_event_source_get_description(s->timer_event_source, &desc); | |
365c2885 | 351 | log_unit_warning_errno(UNIT(s), r, "Failed to set timeout time for event source '%s', ignoring %m", strna(desc)); |
a327431b DB |
352 | } |
353 | } | |
354 | ||
ec35a7f6 LP |
355 | static void service_extend_timeout(Service *s, usec_t extend_timeout_usec) { |
356 | usec_t extended; | |
357 | ||
358 | assert(s); | |
359 | ||
0da36375 | 360 | if (!timestamp_is_set(extend_timeout_usec)) |
ec35a7f6 LP |
361 | return; |
362 | ||
363 | extended = usec_add(now(CLOCK_MONOTONIC), extend_timeout_usec); | |
364 | ||
365 | service_extend_event_source_timeout(s, s->timer_event_source, extended); | |
366 | service_extend_event_source_timeout(s, s->watchdog_event_source, extended); | |
367 | } | |
368 | ||
a6927d7f MO |
369 | static void service_reset_watchdog(Service *s) { |
370 | assert(s); | |
371 | ||
fa5a0251 | 372 | dual_timestamp_now(&s->watchdog_timestamp); |
842129f5 | 373 | service_start_watchdog(s); |
a6927d7f MO |
374 | } |
375 | ||
95d0d8ed | 376 | static void service_override_watchdog_timeout(Service *s, usec_t watchdog_override_usec) { |
2787d83c M |
377 | assert(s); |
378 | ||
379 | s->watchdog_override_enable = true; | |
380 | s->watchdog_override_usec = watchdog_override_usec; | |
381 | service_reset_watchdog(s); | |
382 | ||
383 | log_unit_debug(UNIT(s), "watchdog_usec="USEC_FMT, s->watchdog_usec); | |
384 | log_unit_debug(UNIT(s), "watchdog_override_usec="USEC_FMT, s->watchdog_override_usec); | |
385 | } | |
386 | ||
a02287ea | 387 | static ServiceFDStore* service_fd_store_unlink(ServiceFDStore *fs) { |
a354329f | 388 | if (!fs) |
a02287ea | 389 | return NULL; |
a354329f LP |
390 | |
391 | if (fs->service) { | |
392 | assert(fs->service->n_fd_store > 0); | |
393 | LIST_REMOVE(fd_store, fs->service->fd_store, fs); | |
394 | fs->service->n_fd_store--; | |
395 | } | |
396 | ||
1d3fe304 | 397 | sd_event_source_disable_unref(fs->event_source); |
a354329f | 398 | |
8dd4c05b | 399 | free(fs->fdname); |
99620f45 | 400 | asynchronous_close(fs->fd); |
a02287ea | 401 | return mfree(fs); |
a354329f LP |
402 | } |
403 | ||
a02287ea YW |
404 | DEFINE_TRIVIAL_CLEANUP_FUNC(ServiceFDStore*, service_fd_store_unlink); |
405 | ||
f0bfbfac ZJS |
406 | static void service_release_fd_store(Service *s) { |
407 | assert(s); | |
408 | ||
c25fac9a LP |
409 | if (!s->fd_store) |
410 | return; | |
411 | ||
f0bfbfac | 412 | log_unit_debug(UNIT(s), "Releasing all stored fds"); |
c25fac9a | 413 | |
f0bfbfac ZJS |
414 | while (s->fd_store) |
415 | service_fd_store_unlink(s->fd_store); | |
416 | ||
417 | assert(s->n_fd_store == 0); | |
418 | } | |
419 | ||
c25fac9a | 420 | static void service_release_stdio_fd(Service *s) { |
a354329f LP |
421 | assert(s); |
422 | ||
c25fac9a | 423 | if (s->stdin_fd < 0 && s->stdout_fd < 0 && s->stdout_fd < 0) |
a354329f LP |
424 | return; |
425 | ||
c25fac9a | 426 | log_unit_debug(UNIT(s), "Releasing stdin/stdout/stderr file descriptors."); |
a354329f | 427 | |
99620f45 LP |
428 | s->stdin_fd = asynchronous_close(s->stdin_fd); |
429 | s->stdout_fd = asynchronous_close(s->stdout_fd); | |
430 | s->stderr_fd = asynchronous_close(s->stderr_fd); | |
a354329f | 431 | } |
87f0e418 LP |
432 | static void service_done(Unit *u) { |
433 | Service *s = SERVICE(u); | |
44d8db9e LP |
434 | |
435 | assert(s); | |
436 | ||
cd48e23f RP |
437 | open_file_free_many(&s->open_files); |
438 | ||
a1e58e8e LP |
439 | s->pid_file = mfree(s->pid_file); |
440 | s->status_text = mfree(s->status_text); | |
efe6e7d3 | 441 | |
28135da3 | 442 | s->exec_runtime = exec_runtime_free(s->exec_runtime); |
e537352b | 443 | exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); |
44d8db9e | 444 | s->control_command = NULL; |
867b3b7d | 445 | s->main_command = NULL; |
44d8db9e | 446 | |
37520c1b LP |
447 | exit_status_set_free(&s->restart_prevent_status); |
448 | exit_status_set_free(&s->restart_force_status); | |
449 | exit_status_set_free(&s->success_status); | |
96342de6 | 450 | |
c79ab77c | 451 | /* This will leak a process, but at least no memory or any of our resources */ |
5e94833f LP |
452 | service_unwatch_main_pid(s); |
453 | service_unwatch_control_pid(s); | |
3e52541e | 454 | service_unwatch_pid_file(s); |
44d8db9e | 455 | |
05e343b7 | 456 | if (s->bus_name) { |
ac155bb8 | 457 | unit_unwatch_bus_name(u, s->bus_name); |
a1e58e8e | 458 | s->bus_name = mfree(s->bus_name); |
05e343b7 LP |
459 | } |
460 | ||
d8ccf5fd DM |
461 | s->bus_name_owner = mfree(s->bus_name_owner); |
462 | ||
064c5938 ZJS |
463 | s->usb_function_descriptors = mfree(s->usb_function_descriptors); |
464 | s->usb_function_strings = mfree(s->usb_function_strings); | |
465 | ||
bb242b7b MO |
466 | service_stop_watchdog(s); |
467 | ||
5dcadb4c ZJS |
468 | s->timer_event_source = sd_event_source_disable_unref(s->timer_event_source); |
469 | s->exec_fd_event_source = sd_event_source_disable_unref(s->exec_fd_event_source); | |
a354329f | 470 | |
e39eb045 LP |
471 | s->bus_name_pid_lookup_slot = sd_bus_slot_unref(s->bus_name_pid_lookup_slot); |
472 | ||
81a1d6d6 | 473 | service_release_socket_fd(s); |
c25fac9a | 474 | service_release_stdio_fd(s); |
81a1d6d6 | 475 | service_release_fd_store(s); |
718db961 LP |
476 | } |
477 | ||
2339fc93 | 478 | static int on_fd_store_io(sd_event_source *e, int fd, uint32_t revents, void *userdata) { |
99534007 | 479 | ServiceFDStore *fs = ASSERT_PTR(userdata); |
2339fc93 LP |
480 | |
481 | assert(e); | |
2339fc93 LP |
482 | |
483 | /* If we get either EPOLLHUP or EPOLLERR, it's time to remove this entry from the fd store */ | |
16f70d63 ZJS |
484 | log_unit_debug(UNIT(fs->service), |
485 | "Received %s on stored fd %d (%s), closing.", | |
486 | revents & EPOLLERR ? "EPOLLERR" : "EPOLLHUP", | |
487 | fs->fd, strna(fs->fdname)); | |
2339fc93 LP |
488 | service_fd_store_unlink(fs); |
489 | return 0; | |
490 | } | |
491 | ||
a02287ea YW |
492 | static int service_add_fd_store(Service *s, int fd_in, const char *name, bool do_poll) { |
493 | _cleanup_(service_fd_store_unlinkp) ServiceFDStore *fs = NULL; | |
494 | _cleanup_(asynchronous_closep) int fd = ASSERT_FD(fd_in); | |
e8783d76 | 495 | struct stat st; |
2339fc93 LP |
496 | int r; |
497 | ||
a02287ea | 498 | /* fd is always consumed even if the function fails. */ |
9021ff17 | 499 | |
2339fc93 | 500 | assert(s); |
2339fc93 | 501 | |
e8783d76 LP |
502 | if (fstat(fd, &st) < 0) |
503 | return -errno; | |
504 | ||
505 | log_unit_debug(UNIT(s), "Trying to stash fd for dev=" DEVNUM_FORMAT_STR "/inode=%" PRIu64, DEVNUM_FORMAT_VAL(st.st_dev), (uint64_t) st.st_ino); | |
506 | ||
2339fc93 | 507 | if (s->n_fd_store >= s->n_fd_store_max) |
e8783d76 LP |
508 | /* Our store is full. Use this errno rather than E[NM]FILE to distinguish from the case |
509 | * where systemd itself hits the file limit. */ | |
510 | return log_unit_debug_errno(UNIT(s), SYNTHETIC_ERRNO(EXFULL), "Hit fd store limit."); | |
2339fc93 | 511 | |
03677889 YW |
512 | LIST_FOREACH(fd_store, i, s->fd_store) { |
513 | r = same_fd(i->fd, fd); | |
2339fc93 LP |
514 | if (r < 0) |
515 | return r; | |
516 | if (r > 0) { | |
a02287ea | 517 | log_unit_debug(UNIT(s), "Suppressing duplicate fd %i in fd store.", fd); |
9021ff17 | 518 | return 0; /* fd already included */ |
2339fc93 LP |
519 | } |
520 | } | |
521 | ||
b0cea477 | 522 | fs = new(ServiceFDStore, 1); |
2339fc93 LP |
523 | if (!fs) |
524 | return -ENOMEM; | |
525 | ||
b0cea477 | 526 | *fs = (ServiceFDStore) { |
a02287ea | 527 | .fd = TAKE_FD(fd), |
b0cea477 LP |
528 | .do_poll = do_poll, |
529 | .fdname = strdup(name ?: "stored"), | |
530 | }; | |
531 | ||
a02287ea | 532 | if (!fs->fdname) |
8dd4c05b | 533 | return -ENOMEM; |
2339fc93 | 534 | |
cb5a46b8 | 535 | if (do_poll) { |
a02287ea YW |
536 | r = sd_event_add_io(UNIT(s)->manager->event, &fs->event_source, fs->fd, 0, on_fd_store_io, fs); |
537 | if (r < 0 && r != -EPERM) /* EPERM indicates fds that aren't pollable, which is OK */ | |
cb5a46b8 | 538 | return r; |
a02287ea | 539 | else if (r >= 0) |
cb5a46b8 KL |
540 | (void) sd_event_source_set_description(fs->event_source, "service-fd-store"); |
541 | } | |
7dfbe2e3 | 542 | |
a02287ea | 543 | fs->service = s; |
2339fc93 LP |
544 | LIST_PREPEND(fd_store, s->fd_store, fs); |
545 | s->n_fd_store++; | |
546 | ||
a02287ea YW |
547 | log_unit_debug(UNIT(s), "Added fd %i (%s) to fd store.", fs->fd, fs->fdname); |
548 | ||
549 | TAKE_PTR(fs); | |
9021ff17 | 550 | return 1; /* fd newly stored */ |
2339fc93 LP |
551 | } |
552 | ||
cb5a46b8 | 553 | static int service_add_fd_store_set(Service *s, FDSet *fds, const char *name, bool do_poll) { |
2339fc93 LP |
554 | int r; |
555 | ||
556 | assert(s); | |
557 | ||
a02287ea YW |
558 | for (;;) { |
559 | int fd; | |
2339fc93 LP |
560 | |
561 | fd = fdset_steal_first(fds); | |
562 | if (fd < 0) | |
563 | break; | |
564 | ||
cb5a46b8 | 565 | r = service_add_fd_store(s, fd, name, do_poll); |
b0924635 ZJS |
566 | if (r == -EXFULL) |
567 | return log_unit_warning_errno(UNIT(s), r, | |
568 | "Cannot store more fds than FileDescriptorStoreMax=%u, closing remaining.", | |
569 | s->n_fd_store_max); | |
2339fc93 | 570 | if (r < 0) |
b0924635 | 571 | return log_unit_error_errno(UNIT(s), r, "Failed to add fd to store: %m"); |
2339fc93 LP |
572 | } |
573 | ||
2339fc93 LP |
574 | return 0; |
575 | } | |
576 | ||
e78ee06d | 577 | static void service_remove_fd_store(Service *s, const char *name) { |
e78ee06d LP |
578 | assert(s); |
579 | assert(name); | |
580 | ||
80a226b2 | 581 | LIST_FOREACH(fd_store, fs, s->fd_store) { |
e78ee06d LP |
582 | if (!streq(fs->fdname, name)) |
583 | continue; | |
584 | ||
585 | log_unit_debug(UNIT(s), "Got explicit request to remove fd %i (%s), closing.", fs->fd, name); | |
586 | service_fd_store_unlink(fs); | |
587 | } | |
588 | } | |
589 | ||
ecea250d | 590 | static usec_t service_running_timeout(Service *s) { |
5918a933 AB |
591 | usec_t delta = 0; |
592 | ||
593 | assert(s); | |
594 | ||
595 | if (s->runtime_rand_extra_usec != 0) { | |
596 | delta = random_u64_range(s->runtime_rand_extra_usec); | |
597 | log_unit_debug(UNIT(s), "Adding delta of %s sec to timeout", FORMAT_TIMESPAN(delta, USEC_PER_SEC)); | |
598 | } | |
599 | ||
600 | return usec_add(usec_add(UNIT(s)->active_enter_timestamp.monotonic, | |
601 | s->runtime_max_usec), | |
602 | delta); | |
603 | } | |
604 | ||
e5d6dcce | 605 | static int service_arm_timer(Service *s, bool relative, usec_t usec) { |
718db961 LP |
606 | assert(s); |
607 | ||
e9276800 | 608 | return unit_arm_timer(UNIT(s), &s->timer_event_source, relative, usec, service_dispatch_timer); |
44d8db9e LP |
609 | } |
610 | ||
243b1432 LP |
611 | static int service_verify(Service *s) { |
612 | assert(s); | |
e0cfed4c | 613 | assert(UNIT(s)->load_state == UNIT_LOADED); |
243b1432 | 614 | |
03677889 | 615 | for (ServiceExecCommand c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) |
8688a389 YW |
616 | LIST_FOREACH(command, command, s->exec_command[c]) { |
617 | if (!path_is_absolute(command->path) && !filename_is_valid(command->path)) | |
618 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENOEXEC), | |
619 | "Service %s= binary path \"%s\" is neither a valid executable name nor an absolute path. Refusing.", | |
620 | command->path, | |
621 | service_exec_command_to_string(c)); | |
29500cf8 HC |
622 | if (strv_isempty(command->argv)) |
623 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENOEXEC), | |
624 | "Service has an empty argv in %s=. Refusing.", | |
625 | service_exec_command_to_string(c)); | |
8688a389 | 626 | } |
29500cf8 | 627 | |
d85ff944 YW |
628 | if (!s->exec_command[SERVICE_EXEC_START] && !s->exec_command[SERVICE_EXEC_STOP] && |
629 | UNIT(s)->success_action == EMERGENCY_ACTION_NONE) | |
3f00d379 ZJS |
630 | /* FailureAction= only makes sense if one of the start or stop commands is specified. |
631 | * SuccessAction= will be executed unconditionally if no commands are specified. Hence, | |
632 | * either a command or SuccessAction= are required. */ | |
633 | ||
d85ff944 | 634 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENOEXEC), "Service has no ExecStart=, ExecStop=, or SuccessAction=. Refusing."); |
243b1432 | 635 | |
d85ff944 YW |
636 | if (s->type != SERVICE_ONESHOT && !s->exec_command[SERVICE_EXEC_START]) |
637 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENOEXEC), "Service has no ExecStart= setting, which is only allowed for Type=oneshot services. Refusing."); | |
96fb8242 | 638 | |
d85ff944 YW |
639 | if (!s->remain_after_exit && !s->exec_command[SERVICE_EXEC_START] && UNIT(s)->success_action == EMERGENCY_ACTION_NONE) |
640 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENOEXEC), "Service has no ExecStart= and no SuccessAction= settings and does not have RemainAfterExit=yes set. Refusing."); | |
96fb8242 | 641 | |
d85ff944 YW |
642 | if (s->type != SERVICE_ONESHOT && s->exec_command[SERVICE_EXEC_START]->command_next) |
643 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENOEXEC), "Service has more than one ExecStart= setting, which is only allowed for Type=oneshot services. Refusing."); | |
6cf6bbc2 | 644 | |
d85ff944 YW |
645 | if (s->type == SERVICE_ONESHOT && |
646 | !IN_SET(s->restart, SERVICE_RESTART_NO, SERVICE_RESTART_ON_FAILURE, SERVICE_RESTART_ON_ABNORMAL, SERVICE_RESTART_ON_WATCHDOG, SERVICE_RESTART_ON_ABORT)) | |
647 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENOEXEC), "Service has Restart= set to either always or on-success, which isn't allowed for Type=oneshot services. Refusing."); | |
37520c1b | 648 | |
d85ff944 | 649 | if (s->type == SERVICE_ONESHOT && !exit_status_set_is_empty(&s->restart_force_status)) |
9e670fdc | 650 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENOEXEC), "Service has RestartForceExitStatus= set, which isn't allowed for Type=oneshot services. Refusing."); |
b0693d30 | 651 | |
596e4470 HC |
652 | if (s->type == SERVICE_ONESHOT && s->exit_type == SERVICE_EXIT_CGROUP) |
653 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENOEXEC), "Service has ExitType=cgroup set, which isn't allowed for Type=oneshot services. Refusing."); | |
654 | ||
d85ff944 YW |
655 | if (s->type == SERVICE_DBUS && !s->bus_name) |
656 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENOEXEC), "Service is of type D-Bus but no D-Bus service name has been specified. Refusing."); | |
4d0e5dbd | 657 | |
d85ff944 YW |
658 | if (s->exec_context.pam_name && !IN_SET(s->kill_context.kill_mode, KILL_CONTROL_GROUP, KILL_MIXED)) |
659 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENOEXEC), "Service has PAM enabled. Kill mode must be set to 'control-group' or 'mixed'. Refusing."); | |
05e343b7 | 660 | |
6b7e5923 PS |
661 | if (s->usb_function_descriptors && !s->usb_function_strings) |
662 | log_unit_warning(UNIT(s), "Service has USBFunctionDescriptors= setting, but no USBFunctionStrings=. Ignoring."); | |
663 | ||
664 | if (!s->usb_function_descriptors && s->usb_function_strings) | |
665 | log_unit_warning(UNIT(s), "Service has USBFunctionStrings= setting, but no USBFunctionDescriptors=. Ignoring."); | |
666 | ||
36c16a7c | 667 | if (s->runtime_max_usec != USEC_INFINITY && s->type == SERVICE_ONESHOT) |
226a08f2 | 668 | log_unit_warning(UNIT(s), "RuntimeMaxSec= has no effect in combination with Type=oneshot. Ignoring."); |
36c16a7c | 669 | |
5918a933 AB |
670 | if (s->runtime_max_usec == USEC_INFINITY && s->runtime_rand_extra_usec != 0) |
671 | log_unit_warning(UNIT(s), "Service has RuntimeRandomizedExtraSec= setting, but no RuntimeMaxSec=. Ignoring."); | |
672 | ||
86838bf0 LB |
673 | if (s->exit_type == SERVICE_EXIT_CGROUP && cg_unified() < CGROUP_UNIFIED_SYSTEMD) |
674 | log_unit_warning(UNIT(s), "Service has ExitType=cgroup set, but we are running with legacy cgroups v1, which might not work correctly. Continuing."); | |
675 | ||
e9f17fa8 MY |
676 | if (s->restart_max_delay_usec == USEC_INFINITY && s->restart_steps > 0) |
677 | log_unit_warning(UNIT(s), "Service has RestartSteps= but no RestartMaxDelaySec= setting. Ignoring."); | |
be1adc27 | 678 | |
e9f17fa8 MY |
679 | if (s->restart_max_delay_usec != USEC_INFINITY && s->restart_steps == 0) |
680 | log_unit_warning(UNIT(s), "Service has RestartMaxDelaySec= but no RestartSteps= setting. Ignoring."); | |
be1adc27 | 681 | |
e9f17fa8 MY |
682 | if (s->restart_max_delay_usec < s->restart_usec) { |
683 | log_unit_warning(UNIT(s), "RestartMaxDelaySec= has a value smaller than RestartSec=, resetting RestartSec= to RestartMaxDelaySec=."); | |
684 | s->restart_usec = s->restart_max_delay_usec; | |
be1adc27 MY |
685 | } |
686 | ||
243b1432 LP |
687 | return 0; |
688 | } | |
689 | ||
a40eb732 LP |
690 | static int service_add_default_dependencies(Service *s) { |
691 | int r; | |
692 | ||
693 | assert(s); | |
694 | ||
45f06b34 LP |
695 | if (!UNIT(s)->default_dependencies) |
696 | return 0; | |
697 | ||
a40eb732 LP |
698 | /* Add a number of automatic dependencies useful for the |
699 | * majority of services. */ | |
700 | ||
463d0d15 | 701 | if (MANAGER_IS_SYSTEM(UNIT(s)->manager)) { |
3835b9aa LB |
702 | /* First, pull in the really early boot stuff, and |
703 | * require it, so that we fail if we can't acquire | |
704 | * it. */ | |
705 | ||
706 | r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, true, UNIT_DEPENDENCY_DEFAULT); | |
cb4c247d LP |
707 | if (r < 0) |
708 | return r; | |
709 | } else { | |
710 | ||
711 | /* In the --user instance there's no sysinit.target, | |
712 | * in that case require basic.target instead. */ | |
713 | ||
35d8c19a | 714 | r = unit_add_dependency_by_name(UNIT(s), UNIT_REQUIRES, SPECIAL_BASIC_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
cb4c247d LP |
715 | if (r < 0) |
716 | return r; | |
717 | } | |
718 | ||
719 | /* Second, if the rest of the base system is in the same | |
720 | * transaction, order us after it, but do not pull it in or | |
721 | * even require it. */ | |
35d8c19a | 722 | r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_BASIC_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
fccd44ec KS |
723 | if (r < 0) |
724 | return r; | |
a40eb732 | 725 | |
cb4c247d | 726 | /* Third, add us in for normal shutdown. */ |
3835b9aa | 727 | return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
a40eb732 LP |
728 | } |
729 | ||
3b7f79dc | 730 | static void service_fix_stdio(Service *s) { |
4dfc092a LP |
731 | assert(s); |
732 | ||
3b7f79dc LP |
733 | /* Note that EXEC_INPUT_NULL and EXEC_OUTPUT_INHERIT play a special role here: they are both the |
734 | * default value that is subject to automatic overriding triggered by other settings and an explicit | |
162392b7 | 735 | * choice the user can make. We don't distinguish between these cases currently. */ |
3b7f79dc LP |
736 | |
737 | if (s->exec_context.std_input == EXEC_INPUT_NULL && | |
738 | s->exec_context.stdin_data_size > 0) | |
739 | s->exec_context.std_input = EXEC_INPUT_DATA; | |
740 | ||
741 | if (IN_SET(s->exec_context.std_input, | |
742 | EXEC_INPUT_TTY, | |
743 | EXEC_INPUT_TTY_FORCE, | |
744 | EXEC_INPUT_TTY_FAIL, | |
745 | EXEC_INPUT_SOCKET, | |
746 | EXEC_INPUT_NAMED_FD)) | |
747 | return; | |
748 | ||
749 | /* We assume these listed inputs refer to bidirectional streams, and hence duplicating them from | |
750 | * stdin to stdout/stderr makes sense and hence leaving EXEC_OUTPUT_INHERIT in place makes sense, | |
751 | * too. Outputs such as regular files or sealed data memfds otoh don't really make sense to be | |
752 | * duplicated for both input and output at the same time (since they then would cause a feedback | |
753 | * loop), hence override EXEC_OUTPUT_INHERIT with the default stderr/stdout setting. */ | |
4dfc092a LP |
754 | |
755 | if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT && | |
3b7f79dc | 756 | s->exec_context.std_output == EXEC_OUTPUT_INHERIT) |
c9e120e0 | 757 | s->exec_context.std_error = UNIT(s)->manager->defaults.std_error; |
4dfc092a | 758 | |
3b7f79dc | 759 | if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT) |
c9e120e0 | 760 | s->exec_context.std_output = UNIT(s)->manager->defaults.std_output; |
4dfc092a LP |
761 | } |
762 | ||
45f06b34 LP |
763 | static int service_setup_bus_name(Service *s) { |
764 | int r; | |
765 | ||
766 | assert(s); | |
767 | ||
0f97b7c3 | 768 | /* If s->bus_name is not set, then the unit will be refused by service_verify() later. */ |
1e8b312e | 769 | if (!s->bus_name) |
45f06b34 LP |
770 | return 0; |
771 | ||
1e8b312e LP |
772 | if (s->type == SERVICE_DBUS) { |
773 | r = unit_add_dependency_by_name(UNIT(s), UNIT_REQUIRES, SPECIAL_DBUS_SOCKET, true, UNIT_DEPENDENCY_FILE); | |
774 | if (r < 0) | |
775 | return log_unit_error_errno(UNIT(s), r, "Failed to add dependency on " SPECIAL_DBUS_SOCKET ": %m"); | |
45f06b34 | 776 | |
1e8b312e LP |
777 | /* We always want to be ordered against dbus.socket if both are in the transaction. */ |
778 | r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_DBUS_SOCKET, true, UNIT_DEPENDENCY_FILE); | |
779 | if (r < 0) | |
780 | return log_unit_error_errno(UNIT(s), r, "Failed to add dependency on " SPECIAL_DBUS_SOCKET ": %m"); | |
781 | } | |
45f06b34 LP |
782 | |
783 | r = unit_watch_bus_name(UNIT(s), s->bus_name); | |
784 | if (r == -EEXIST) | |
785 | return log_unit_error_errno(UNIT(s), r, "Two services allocated for the same bus name %s, refusing operation.", s->bus_name); | |
786 | if (r < 0) | |
787 | return log_unit_error_errno(UNIT(s), r, "Cannot watch bus name %s: %m", s->bus_name); | |
788 | ||
789 | return 0; | |
790 | } | |
791 | ||
8545f7ce LP |
792 | static int service_add_extras(Service *s) { |
793 | int r; | |
794 | ||
795 | assert(s); | |
796 | ||
797 | if (s->type == _SERVICE_TYPE_INVALID) { | |
798 | /* Figure out a type automatically */ | |
799 | if (s->bus_name) | |
800 | s->type = SERVICE_DBUS; | |
801 | else if (s->exec_command[SERVICE_EXEC_START]) | |
802 | s->type = SERVICE_SIMPLE; | |
803 | else | |
804 | s->type = SERVICE_ONESHOT; | |
805 | } | |
806 | ||
807 | /* Oneshot services have disabled start timeout by default */ | |
808 | if (s->type == SERVICE_ONESHOT && !s->start_timeout_defined) | |
36c16a7c | 809 | s->timeout_start_usec = USEC_INFINITY; |
8545f7ce | 810 | |
3b7f79dc | 811 | service_fix_stdio(s); |
8545f7ce LP |
812 | |
813 | r = unit_patch_contexts(UNIT(s)); | |
814 | if (r < 0) | |
815 | return r; | |
816 | ||
817 | r = unit_add_exec_dependencies(UNIT(s), &s->exec_context); | |
818 | if (r < 0) | |
819 | return r; | |
820 | ||
d79200e2 | 821 | r = unit_set_default_slice(UNIT(s)); |
8545f7ce LP |
822 | if (r < 0) |
823 | return r; | |
824 | ||
4330dc03 AJ |
825 | /* If the service needs the notify socket, let's enable it automatically. */ |
826 | if (s->notify_access == NOTIFY_NONE && | |
3bd28bf7 | 827 | (IN_SET(s->type, SERVICE_NOTIFY, SERVICE_NOTIFY_RELOAD) || s->watchdog_usec > 0 || s->n_fd_store_max > 0)) |
8545f7ce LP |
828 | s->notify_access = NOTIFY_MAIN; |
829 | ||
afcfaa69 LP |
830 | /* If no OOM policy was explicitly set, then default to the configure default OOM policy. Except when |
831 | * delegation is on, in that case it we assume the payload knows better what to do and can process | |
5238e957 | 832 | * things in a more focused way. */ |
afcfaa69 | 833 | if (s->oom_policy < 0) |
c9e120e0 | 834 | s->oom_policy = s->cgroup_context.delegate ? OOM_CONTINUE : UNIT(s)->manager->defaults.oom_policy; |
afcfaa69 LP |
835 | |
836 | /* Let the kernel do the killing if that's requested. */ | |
837 | s->cgroup_context.memory_oom_group = s->oom_policy == OOM_KILL; | |
838 | ||
45f06b34 LP |
839 | r = service_add_default_dependencies(s); |
840 | if (r < 0) | |
841 | return r; | |
8545f7ce | 842 | |
45f06b34 LP |
843 | r = service_setup_bus_name(s); |
844 | if (r < 0) | |
845 | return r; | |
8545f7ce LP |
846 | |
847 | return 0; | |
848 | } | |
849 | ||
e537352b | 850 | static int service_load(Unit *u) { |
e537352b | 851 | Service *s = SERVICE(u); |
8bb2d17d | 852 | int r; |
e537352b | 853 | |
e0cfed4c | 854 | r = unit_load_fragment_and_dropin(u, true); |
c2756a68 | 855 | if (r < 0) |
5cb5a6ff LP |
856 | return r; |
857 | ||
e0cfed4c ZJS |
858 | if (u->load_state != UNIT_LOADED) |
859 | return 0; | |
034c6ed7 | 860 | |
23a177ef | 861 | /* This is a new unit? Then let's add in some extras */ |
e0cfed4c ZJS |
862 | r = service_add_extras(s); |
863 | if (r < 0) | |
864 | return r; | |
8e274523 | 865 | |
243b1432 | 866 | return service_verify(s); |
034c6ed7 LP |
867 | } |
868 | ||
f2eb0c50 LP |
869 | static void service_dump_fdstore(Service *s, FILE *f, const char *prefix) { |
870 | assert(s); | |
871 | assert(f); | |
872 | assert(prefix); | |
873 | ||
874 | LIST_FOREACH(fd_store, i, s->fd_store) { | |
875 | _cleanup_free_ char *path = NULL; | |
876 | struct stat st; | |
877 | int flags; | |
878 | ||
879 | if (fstat(i->fd, &st) < 0) { | |
880 | log_debug_errno(errno, "Failed to stat fdstore entry: %m"); | |
881 | continue; | |
882 | } | |
883 | ||
884 | flags = fcntl(i->fd, F_GETFL); | |
885 | if (flags < 0) { | |
886 | log_debug_errno(errno, "Failed to get fdstore entry flags: %m"); | |
887 | continue; | |
888 | } | |
889 | ||
890 | (void) fd_get_path(i->fd, &path); | |
891 | ||
892 | fprintf(f, | |
893 | "%s%s '%s' (type=%s; dev=" DEVNUM_FORMAT_STR "; inode=%" PRIu64 "; rdev=" DEVNUM_FORMAT_STR "; path=%s; access=%s)\n", | |
894 | prefix, i == s->fd_store ? "File Descriptor Store Entry:" : " ", | |
895 | i->fdname, | |
8ba11146 | 896 | strna(inode_type_to_string(st.st_mode)), |
f2eb0c50 LP |
897 | DEVNUM_FORMAT_VAL(st.st_dev), |
898 | (uint64_t) st.st_ino, | |
899 | DEVNUM_FORMAT_VAL(st.st_rdev), | |
900 | strna(path), | |
8ba11146 | 901 | strna(accmode_to_string(flags))); |
f2eb0c50 LP |
902 | } |
903 | } | |
904 | ||
87f0e418 | 905 | static void service_dump(Unit *u, FILE *f, const char *prefix) { |
87f0e418 | 906 | Service *s = SERVICE(u); |
47be870b | 907 | const char *prefix2; |
5cb5a6ff LP |
908 | |
909 | assert(s); | |
910 | ||
4c940960 | 911 | prefix = strempty(prefix); |
63c372cb | 912 | prefix2 = strjoina(prefix, "\t"); |
44d8db9e | 913 | |
5cb5a6ff | 914 | fprintf(f, |
81a2b7ce | 915 | "%sService State: %s\n" |
f42806df LP |
916 | "%sResult: %s\n" |
917 | "%sReload Result: %s\n" | |
4c2f5842 | 918 | "%sClean Result: %s\n" |
81a2b7ce | 919 | "%sPermissionsStartOnly: %s\n" |
8e274523 | 920 | "%sRootDirectoryStartOnly: %s\n" |
02ee865a | 921 | "%sRemainAfterExit: %s\n" |
3185a36b | 922 | "%sGuessMainPID: %s\n" |
c952c6ec | 923 | "%sType: %s\n" |
2cf3143a | 924 | "%sRestart: %s\n" |
308d72dc | 925 | "%sNotifyAccess: %s\n" |
afcfaa69 | 926 | "%sNotifyState: %s\n" |
3bd28bf7 LP |
927 | "%sOOMPolicy: %s\n" |
928 | "%sReloadSignal: %s\n", | |
81a2b7ce | 929 | prefix, service_state_to_string(s->state), |
f42806df LP |
930 | prefix, service_result_to_string(s->result), |
931 | prefix, service_result_to_string(s->reload_result), | |
4c2f5842 | 932 | prefix, service_result_to_string(s->clean_result), |
81a2b7ce | 933 | prefix, yes_no(s->permissions_start_only), |
8e274523 | 934 | prefix, yes_no(s->root_directory_start_only), |
02ee865a | 935 | prefix, yes_no(s->remain_after_exit), |
3185a36b | 936 | prefix, yes_no(s->guess_main_pid), |
c952c6ec | 937 | prefix, service_type_to_string(s->type), |
2cf3143a | 938 | prefix, service_restart_to_string(s->restart), |
19dff691 | 939 | prefix, notify_access_to_string(service_get_notify_access(s)), |
afcfaa69 | 940 | prefix, notify_state_to_string(s->notify_state), |
3bd28bf7 LP |
941 | prefix, oom_policy_to_string(s->oom_policy), |
942 | prefix, signal_to_string(s->reload_signal)); | |
5cb5a6ff | 943 | |
c79ab77c | 944 | if (pidref_is_set(&s->control_pid)) |
70123e68 | 945 | fprintf(f, |
ccd06097 | 946 | "%sControl PID: "PID_FMT"\n", |
c79ab77c | 947 | prefix, s->control_pid.pid); |
70123e68 | 948 | |
c79ab77c | 949 | if (pidref_is_set(&s->main_pid)) |
70123e68 | 950 | fprintf(f, |
ccd06097 | 951 | "%sMain PID: "PID_FMT"\n" |
6dfa5494 LP |
952 | "%sMain PID Known: %s\n" |
953 | "%sMain PID Alien: %s\n", | |
c79ab77c | 954 | prefix, s->main_pid.pid, |
6dfa5494 LP |
955 | prefix, yes_no(s->main_pid_known), |
956 | prefix, yes_no(s->main_pid_alien)); | |
70123e68 | 957 | |
034c6ed7 LP |
958 | if (s->pid_file) |
959 | fprintf(f, | |
960 | "%sPIDFile: %s\n", | |
961 | prefix, s->pid_file); | |
962 | ||
05e343b7 LP |
963 | if (s->bus_name) |
964 | fprintf(f, | |
965 | "%sBusName: %s\n" | |
966 | "%sBus Name Good: %s\n", | |
967 | prefix, s->bus_name, | |
968 | prefix, yes_no(s->bus_name_good)); | |
969 | ||
9dfb64f8 ZJS |
970 | if (UNIT_ISSET(s->accept_socket)) |
971 | fprintf(f, | |
972 | "%sAccept Socket: %s\n", | |
973 | prefix, UNIT_DEREF(s->accept_socket)->id); | |
974 | ||
c9d41699 YW |
975 | fprintf(f, |
976 | "%sRestartSec: %s\n" | |
be1adc27 | 977 | "%sRestartSteps: %u\n" |
e9f17fa8 | 978 | "%sRestartMaxDelaySec: %s\n" |
c9d41699 | 979 | "%sTimeoutStartSec: %s\n" |
bf760801 JK |
980 | "%sTimeoutStopSec: %s\n" |
981 | "%sTimeoutStartFailureMode: %s\n" | |
982 | "%sTimeoutStopFailureMode: %s\n", | |
5291f26d | 983 | prefix, FORMAT_TIMESPAN(s->restart_usec, USEC_PER_SEC), |
be1adc27 | 984 | prefix, s->restart_steps, |
e9f17fa8 | 985 | prefix, FORMAT_TIMESPAN(s->restart_max_delay_usec, USEC_PER_SEC), |
5291f26d ZJS |
986 | prefix, FORMAT_TIMESPAN(s->timeout_start_usec, USEC_PER_SEC), |
987 | prefix, FORMAT_TIMESPAN(s->timeout_stop_usec, USEC_PER_SEC), | |
bf760801 JK |
988 | prefix, service_timeout_failure_mode_to_string(s->timeout_start_failure_mode), |
989 | prefix, service_timeout_failure_mode_to_string(s->timeout_stop_failure_mode)); | |
dcab85be YW |
990 | |
991 | if (s->timeout_abort_set) | |
992 | fprintf(f, | |
993 | "%sTimeoutAbortSec: %s\n", | |
5291f26d | 994 | prefix, FORMAT_TIMESPAN(s->timeout_abort_usec, USEC_PER_SEC)); |
dcab85be YW |
995 | |
996 | fprintf(f, | |
997 | "%sRuntimeMaxSec: %s\n" | |
5918a933 | 998 | "%sRuntimeRandomizedExtraSec: %s\n" |
dcab85be | 999 | "%sWatchdogSec: %s\n", |
5291f26d | 1000 | prefix, FORMAT_TIMESPAN(s->runtime_max_usec, USEC_PER_SEC), |
5918a933 | 1001 | prefix, FORMAT_TIMESPAN(s->runtime_rand_extra_usec, USEC_PER_SEC), |
5291f26d | 1002 | prefix, FORMAT_TIMESPAN(s->watchdog_usec, USEC_PER_SEC)); |
c9d41699 | 1003 | |
4819ff03 | 1004 | kill_context_dump(&s->kill_context, f, prefix); |
5cb5a6ff LP |
1005 | exec_context_dump(&s->exec_context, f, prefix); |
1006 | ||
68e58ca9 | 1007 | for (ServiceExecCommand c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) { |
44d8db9e LP |
1008 | if (!s->exec_command[c]) |
1009 | continue; | |
1010 | ||
40d50879 | 1011 | fprintf(f, "%s-> %s:\n", |
94f04347 | 1012 | prefix, service_exec_command_to_string(c)); |
44d8db9e LP |
1013 | |
1014 | exec_command_dump_list(s->exec_command[c], f, prefix2); | |
5cb5a6ff | 1015 | } |
44d8db9e | 1016 | |
8c47c732 LP |
1017 | if (s->status_text) |
1018 | fprintf(f, "%sStatus Text: %s\n", | |
1019 | prefix, s->status_text); | |
a354329f | 1020 | |
ece174c5 | 1021 | if (s->n_fd_store_max > 0) |
a354329f LP |
1022 | fprintf(f, |
1023 | "%sFile Descriptor Store Max: %u\n" | |
b9c1883a | 1024 | "%sFile Descriptor Store Pin: %s\n" |
da6053d0 | 1025 | "%sFile Descriptor Store Current: %zu\n", |
a354329f | 1026 | prefix, s->n_fd_store_max, |
b9c1883a | 1027 | prefix, exec_preserve_mode_to_string(s->fd_store_preserve_mode), |
a354329f | 1028 | prefix, s->n_fd_store); |
18f573aa | 1029 | |
f2eb0c50 LP |
1030 | service_dump_fdstore(s, f, prefix); |
1031 | ||
cd48e23f RP |
1032 | if (s->open_files) |
1033 | LIST_FOREACH(open_files, of, s->open_files) { | |
1034 | _cleanup_free_ char *ofs = NULL; | |
1035 | int r; | |
1036 | ||
1037 | r = open_file_to_string(of, &ofs); | |
1038 | if (r < 0) { | |
1039 | log_debug_errno(r, | |
1040 | "Failed to convert OpenFile= setting to string, ignoring: %m"); | |
1041 | continue; | |
1042 | } | |
1043 | ||
1044 | fprintf(f, "%sOpen File: %s\n", prefix, ofs); | |
1045 | } | |
1046 | ||
bc0623df | 1047 | cgroup_context_dump(UNIT(s), f, prefix); |
5cb5a6ff LP |
1048 | } |
1049 | ||
495e75ed | 1050 | static int service_is_suitable_main_pid(Service *s, PidRef *pid, int prio) { |
db256aab | 1051 | Unit *owner; |
becdfcb9 | 1052 | int r; |
db256aab LP |
1053 | |
1054 | assert(s); | |
495e75ed | 1055 | assert(pidref_is_set(pid)); |
db256aab LP |
1056 | |
1057 | /* Checks whether the specified PID is suitable as main PID for this service. returns negative if not, 0 if the | |
1058 | * PID is questionnable but should be accepted if the source of configuration is trusted. > 0 if the PID is | |
1059 | * good */ | |
1060 | ||
a7a87769 | 1061 | if (pidref_is_self(pid) || pid->pid == 1) |
495e75ed | 1062 | return log_unit_full_errno(UNIT(s), prio, SYNTHETIC_ERRNO(EPERM), "New main PID "PID_FMT" is the manager, refusing.", pid->pid); |
db256aab | 1063 | |
495e75ed LP |
1064 | if (pidref_equal(pid, &s->control_pid)) |
1065 | return log_unit_full_errno(UNIT(s), prio, SYNTHETIC_ERRNO(EPERM), "New main PID "PID_FMT" is the control process, refusing.", pid->pid); | |
db256aab | 1066 | |
becdfcb9 | 1067 | r = pidref_is_alive(pid); |
bca08053 MY |
1068 | if (r < 0) |
1069 | return log_unit_full_errno(UNIT(s), prio, r, "Failed to check if main PID "PID_FMT" exists or is a zombie: %m", pid->pid); | |
becdfcb9 | 1070 | if (r == 0) |
495e75ed | 1071 | return log_unit_full_errno(UNIT(s), prio, SYNTHETIC_ERRNO(ESRCH), "New main PID "PID_FMT" does not exist or is a zombie.", pid->pid); |
db256aab | 1072 | |
495e75ed | 1073 | owner = manager_get_unit_by_pidref(UNIT(s)->manager, pid); |
db256aab | 1074 | if (owner == UNIT(s)) { |
495e75ed | 1075 | log_unit_debug(UNIT(s), "New main PID "PID_FMT" belongs to service, we are happy.", pid->pid); |
db256aab LP |
1076 | return 1; /* Yay, it's definitely a good PID */ |
1077 | } | |
1078 | ||
1079 | return 0; /* Hmm it's a suspicious PID, let's accept it if configuration source is trusted */ | |
1080 | } | |
1081 | ||
c5419d42 | 1082 | static int service_load_pid_file(Service *s, bool may_warn) { |
b1f6901d | 1083 | _cleanup_(pidref_done) PidRef pidref = PIDREF_NULL; |
73969ab6 | 1084 | bool questionable_pid_file = false; |
7fd1b19b | 1085 | _cleanup_free_ char *k = NULL; |
254d1313 | 1086 | _cleanup_close_ int fd = -EBADF; |
db256aab | 1087 | int r, prio; |
034c6ed7 LP |
1088 | |
1089 | assert(s); | |
1090 | ||
034c6ed7 | 1091 | if (!s->pid_file) |
13230d5d | 1092 | return -ENOENT; |
034c6ed7 | 1093 | |
db256aab LP |
1094 | prio = may_warn ? LOG_INFO : LOG_DEBUG; |
1095 | ||
f461a28d | 1096 | r = chase(s->pid_file, NULL, CHASE_SAFE, NULL, &fd); |
a5648b80 | 1097 | if (r == -ENOLINK) { |
8ed6f81b YW |
1098 | log_unit_debug_errno(UNIT(s), r, |
1099 | "Potentially unsafe symlink chain, will now retry with relaxed checks: %s", s->pid_file); | |
73969ab6 LP |
1100 | |
1101 | questionable_pid_file = true; | |
1102 | ||
f461a28d | 1103 | r = chase(s->pid_file, NULL, 0, NULL, &fd); |
73969ab6 | 1104 | } |
a5648b80 | 1105 | if (r < 0) |
f86a388d | 1106 | return log_unit_full_errno(UNIT(s), prio, r, |
8ed6f81b | 1107 | "Can't open PID file %s (yet?) after %s: %m", s->pid_file, service_state_to_string(s->state)); |
db256aab | 1108 | |
a5648b80 | 1109 | /* Let's read the PID file now that we chased it down. But we need to convert the O_PATH fd |
f461a28d | 1110 | * chase() returned us into a proper fd first. */ |
ddb6eeaf | 1111 | r = read_one_line_file(FORMAT_PROC_FD_PATH(fd), &k); |
db256aab | 1112 | if (r < 0) |
a5648b80 ZJS |
1113 | return log_unit_error_errno(UNIT(s), r, |
1114 | "Can't convert PID files %s O_PATH file descriptor to proper file descriptor: %m", | |
1115 | s->pid_file); | |
034c6ed7 | 1116 | |
495e75ed | 1117 | r = pidref_set_pidstr(&pidref, k); |
db256aab | 1118 | if (r < 0) |
8ed6f81b | 1119 | return log_unit_full_errno(UNIT(s), prio, r, "Failed to parse PID from file %s: %m", s->pid_file); |
db256aab | 1120 | |
495e75ed | 1121 | if (s->main_pid_known && pidref_equal(&pidref, &s->main_pid)) |
db256aab LP |
1122 | return 0; |
1123 | ||
495e75ed | 1124 | r = service_is_suitable_main_pid(s, &pidref, prio); |
db256aab | 1125 | if (r < 0) |
5925dd3c | 1126 | return r; |
db256aab LP |
1127 | if (r == 0) { |
1128 | struct stat st; | |
406eaf93 | 1129 | |
d85ff944 YW |
1130 | if (questionable_pid_file) |
1131 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(EPERM), | |
1132 | "Refusing to accept PID outside of service control group, acquired through unsafe symlink chain: %s", s->pid_file); | |
73969ab6 | 1133 | |
db256aab LP |
1134 | /* Hmm, it's not clear if the new main PID is safe. Let's allow this if the PID file is owned by root */ |
1135 | ||
1136 | if (fstat(fd, &st) < 0) | |
1137 | return log_unit_error_errno(UNIT(s), errno, "Failed to fstat() PID file O_PATH fd: %m"); | |
1138 | ||
d85ff944 YW |
1139 | if (st.st_uid != 0) |
1140 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(EPERM), | |
b1f6901d | 1141 | "New main PID "PID_FMT" does not belong to service, and PID file is not owned by root. Refusing.", pidref.pid); |
db256aab | 1142 | |
b1f6901d | 1143 | 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.", pidref.pid); |
e10c9985 YS |
1144 | } |
1145 | ||
db01f8b3 | 1146 | if (s->main_pid_known) { |
b1f6901d | 1147 | log_unit_debug(UNIT(s), "Main PID changing: "PID_FMT" -> "PID_FMT, s->main_pid.pid, pidref.pid); |
8bb2d17d | 1148 | |
db01f8b3 MS |
1149 | service_unwatch_main_pid(s); |
1150 | s->main_pid_known = false; | |
3a111838 | 1151 | } else |
b1f6901d | 1152 | log_unit_debug(UNIT(s), "Main PID loaded: "PID_FMT, pidref.pid); |
db01f8b3 | 1153 | |
b1f6901d | 1154 | r = service_set_main_pidref(s, &pidref); |
117dcc57 | 1155 | if (r < 0) |
16f6025e LP |
1156 | return r; |
1157 | ||
495e75ed | 1158 | r = unit_watch_pidref(UNIT(s), &s->main_pid, /* exclusive= */ false); |
e8b509d3 | 1159 | if (r < 0) /* FIXME: we need to do something here */ |
b1f6901d | 1160 | return log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" for service: %m", s->main_pid.pid); |
034c6ed7 | 1161 | |
db256aab | 1162 | return 1; |
034c6ed7 LP |
1163 | } |
1164 | ||
783e05d6 | 1165 | static void service_search_main_pid(Service *s) { |
495e75ed | 1166 | _cleanup_(pidref_done) PidRef pid = PIDREF_NULL; |
4fbf50b3 LP |
1167 | int r; |
1168 | ||
1169 | assert(s); | |
1170 | ||
c79ab77c | 1171 | /* If we know it anyway, don't ever fall back to unreliable heuristics */ |
4fbf50b3 | 1172 | if (s->main_pid_known) |
783e05d6 | 1173 | return; |
4fbf50b3 | 1174 | |
3185a36b | 1175 | if (!s->guess_main_pid) |
783e05d6 | 1176 | return; |
3185a36b | 1177 | |
c79ab77c | 1178 | assert(!pidref_is_set(&s->main_pid)); |
4fbf50b3 | 1179 | |
783e05d6 ZJS |
1180 | if (unit_search_main_pid(UNIT(s), &pid) < 0) |
1181 | return; | |
4fbf50b3 | 1182 | |
495e75ed LP |
1183 | log_unit_debug(UNIT(s), "Main PID guessed: "PID_FMT, pid.pid); |
1184 | if (service_set_main_pidref(s, &pid) < 0) | |
783e05d6 | 1185 | return; |
4fbf50b3 | 1186 | |
495e75ed | 1187 | r = unit_watch_pidref(UNIT(s), &s->main_pid, /* exclusive= */ false); |
783e05d6 | 1188 | if (r < 0) |
4fbf50b3 | 1189 | /* FIXME: we need to do something here */ |
b1f6901d | 1190 | log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" from: %m", s->main_pid.pid); |
4fbf50b3 LP |
1191 | } |
1192 | ||
034c6ed7 LP |
1193 | static void service_set_state(Service *s, ServiceState state) { |
1194 | ServiceState old_state; | |
e056b01d | 1195 | const UnitActiveState *table; |
842129f5 | 1196 | |
5cb5a6ff LP |
1197 | assert(s); |
1198 | ||
6fcbec6f LP |
1199 | if (s->state != state) |
1200 | bus_unit_send_pending_change_signal(UNIT(s), false); | |
1201 | ||
e056b01d LP |
1202 | table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
1203 | ||
034c6ed7 | 1204 | old_state = s->state; |
5cb5a6ff | 1205 | s->state = state; |
034c6ed7 | 1206 | |
3a111838 MS |
1207 | service_unwatch_pid_file(s); |
1208 | ||
842129f5 | 1209 | if (!IN_SET(state, |
31cd5f63 | 1210 | SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, |
36c16a7c | 1211 | SERVICE_RUNNING, |
3bd28bf7 | 1212 | SERVICE_RELOAD, SERVICE_RELOAD_SIGNAL, SERVICE_RELOAD_NOTIFY, |
c87700a1 | 1213 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 1214 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL, |
4c2f5842 LP |
1215 | SERVICE_AUTO_RESTART, |
1216 | SERVICE_CLEANING)) | |
5dcadb4c | 1217 | s->timer_event_source = sd_event_source_disable_unref(s->timer_event_source); |
034c6ed7 | 1218 | |
842129f5 LP |
1219 | if (!IN_SET(state, |
1220 | SERVICE_START, SERVICE_START_POST, | |
3bd28bf7 LP |
1221 | SERVICE_RUNNING, |
1222 | SERVICE_RELOAD, SERVICE_RELOAD_SIGNAL, SERVICE_RELOAD_NOTIFY, | |
c87700a1 | 1223 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 1224 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) { |
5e94833f | 1225 | service_unwatch_main_pid(s); |
867b3b7d LP |
1226 | s->main_command = NULL; |
1227 | } | |
034c6ed7 | 1228 | |
842129f5 | 1229 | if (!IN_SET(state, |
31cd5f63 | 1230 | SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, |
3bd28bf7 | 1231 | SERVICE_RELOAD, SERVICE_RELOAD_SIGNAL, SERVICE_RELOAD_NOTIFY, |
c87700a1 | 1232 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 1233 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL, |
4c2f5842 | 1234 | SERVICE_CLEANING)) { |
5e94833f | 1235 | service_unwatch_control_pid(s); |
034c6ed7 | 1236 | s->control_command = NULL; |
a16e1123 | 1237 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; |
e537352b | 1238 | } |
034c6ed7 | 1239 | |
a1d31573 LP |
1240 | if (IN_SET(state, |
1241 | SERVICE_DEAD, SERVICE_FAILED, | |
09d04ad3 | 1242 | SERVICE_DEAD_BEFORE_AUTO_RESTART, SERVICE_FAILED_BEFORE_AUTO_RESTART, SERVICE_AUTO_RESTART, SERVICE_AUTO_RESTART_QUEUED, |
b9c1883a | 1243 | SERVICE_DEAD_RESOURCES_PINNED)) { |
a911bb9a | 1244 | unit_unwatch_all_pids(UNIT(s)); |
50be4f4a LP |
1245 | unit_dequeue_rewatch_pids(UNIT(s)); |
1246 | } | |
a911bb9a | 1247 | |
5686391b | 1248 | if (state != SERVICE_START) |
5dcadb4c | 1249 | s->exec_fd_event_source = sd_event_source_disable_unref(s->exec_fd_event_source); |
5686391b | 1250 | |
3bd28bf7 | 1251 | if (!IN_SET(state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD, SERVICE_RELOAD_SIGNAL, SERVICE_RELOAD_NOTIFY)) |
a6927d7f MO |
1252 | service_stop_watchdog(s); |
1253 | ||
f6023656 LP |
1254 | /* For the inactive states unit_notify() will trim the cgroup, |
1255 | * but for exit we have to do that ourselves... */ | |
2c289ea8 | 1256 | if (state == SERVICE_EXITED && !MANAGER_IS_RELOADING(UNIT(s)->manager)) |
efdb0237 | 1257 | unit_prune_cgroup(UNIT(s)); |
f6023656 | 1258 | |
e537352b | 1259 | if (old_state != state) |
f2341e0a | 1260 | log_unit_debug(UNIT(s), "Changed %s -> %s", service_state_to_string(old_state), service_state_to_string(state)); |
acbb0225 | 1261 | |
96b09de5 | 1262 | unit_notify(UNIT(s), table[old_state], table[state], s->reload_result == SERVICE_SUCCESS); |
034c6ed7 LP |
1263 | } |
1264 | ||
36c16a7c LP |
1265 | static usec_t service_coldplug_timeout(Service *s) { |
1266 | assert(s); | |
1267 | ||
1268 | switch (s->deserialized_state) { | |
1269 | ||
31cd5f63 | 1270 | case SERVICE_CONDITION: |
36c16a7c LP |
1271 | case SERVICE_START_PRE: |
1272 | case SERVICE_START: | |
1273 | case SERVICE_START_POST: | |
1274 | case SERVICE_RELOAD: | |
3bd28bf7 LP |
1275 | case SERVICE_RELOAD_SIGNAL: |
1276 | case SERVICE_RELOAD_NOTIFY: | |
36c16a7c LP |
1277 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->timeout_start_usec); |
1278 | ||
1279 | case SERVICE_RUNNING: | |
5918a933 | 1280 | return service_running_timeout(s); |
36c16a7c LP |
1281 | |
1282 | case SERVICE_STOP: | |
36c16a7c LP |
1283 | case SERVICE_STOP_SIGTERM: |
1284 | case SERVICE_STOP_SIGKILL: | |
1285 | case SERVICE_STOP_POST: | |
1286 | case SERVICE_FINAL_SIGTERM: | |
1287 | case SERVICE_FINAL_SIGKILL: | |
1288 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->timeout_stop_usec); | |
1289 | ||
dc653bf4 | 1290 | case SERVICE_STOP_WATCHDOG: |
bf760801 | 1291 | case SERVICE_FINAL_WATCHDOG: |
dc653bf4 JK |
1292 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, service_timeout_abort_usec(s)); |
1293 | ||
36c16a7c | 1294 | case SERVICE_AUTO_RESTART: |
5171356e | 1295 | return usec_add(UNIT(s)->inactive_enter_timestamp.monotonic, service_restart_usec_next(s)); |
36c16a7c | 1296 | |
4c2f5842 | 1297 | case SERVICE_CLEANING: |
12213aed | 1298 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->exec_context.timeout_clean_usec); |
4c2f5842 | 1299 | |
36c16a7c LP |
1300 | default: |
1301 | return USEC_INFINITY; | |
1302 | } | |
1303 | } | |
1304 | ||
be847e82 | 1305 | static int service_coldplug(Unit *u) { |
a16e1123 LP |
1306 | Service *s = SERVICE(u); |
1307 | int r; | |
1308 | ||
1309 | assert(s); | |
1310 | assert(s->state == SERVICE_DEAD); | |
1311 | ||
930d2838 LP |
1312 | if (s->deserialized_state == s->state) |
1313 | return 0; | |
6c12b52e | 1314 | |
e5d6dcce | 1315 | r = service_arm_timer(s, /* relative= */ false, service_coldplug_timeout(s)); |
36c16a7c LP |
1316 | if (r < 0) |
1317 | return r; | |
a911bb9a | 1318 | |
c79ab77c | 1319 | if (pidref_is_set(&s->main_pid) && |
4d9f092b | 1320 | pidref_is_unwaited(&s->main_pid) > 0 && |
9acac212 | 1321 | (IN_SET(s->deserialized_state, |
930d2838 | 1322 | SERVICE_START, SERVICE_START_POST, |
3bd28bf7 LP |
1323 | SERVICE_RUNNING, |
1324 | SERVICE_RELOAD, SERVICE_RELOAD_SIGNAL, SERVICE_RELOAD_NOTIFY, | |
c87700a1 | 1325 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 1326 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL))) { |
495e75ed | 1327 | r = unit_watch_pidref(UNIT(s), &s->main_pid, /* exclusive= */ false); |
930d2838 LP |
1328 | if (r < 0) |
1329 | return r; | |
1330 | } | |
bb242b7b | 1331 | |
c79ab77c | 1332 | if (pidref_is_set(&s->control_pid) && |
4d9f092b | 1333 | pidref_is_unwaited(&s->control_pid) > 0 && |
930d2838 | 1334 | IN_SET(s->deserialized_state, |
31cd5f63 | 1335 | SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, |
3bd28bf7 | 1336 | SERVICE_RELOAD, SERVICE_RELOAD_SIGNAL, SERVICE_RELOAD_NOTIFY, |
c87700a1 | 1337 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 1338 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL, |
4c2f5842 | 1339 | SERVICE_CLEANING)) { |
495e75ed | 1340 | r = unit_watch_pidref(UNIT(s), &s->control_pid, /* exclusive= */ false); |
930d2838 LP |
1341 | if (r < 0) |
1342 | return r; | |
a16e1123 | 1343 | } |
92c1622e | 1344 | |
a1d31573 LP |
1345 | if (!IN_SET(s->deserialized_state, |
1346 | SERVICE_DEAD, SERVICE_FAILED, | |
09d04ad3 | 1347 | SERVICE_DEAD_BEFORE_AUTO_RESTART, SERVICE_FAILED_BEFORE_AUTO_RESTART, SERVICE_AUTO_RESTART, SERVICE_AUTO_RESTART_QUEUED, |
b9c1883a LP |
1348 | SERVICE_CLEANING, |
1349 | SERVICE_DEAD_RESOURCES_PINNED)) { | |
50be4f4a | 1350 | (void) unit_enqueue_rewatch_pids(u); |
e8a565cb YW |
1351 | (void) unit_setup_exec_runtime(u); |
1352 | } | |
29206d46 | 1353 | |
3bd28bf7 | 1354 | if (IN_SET(s->deserialized_state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD, SERVICE_RELOAD_SIGNAL, SERVICE_RELOAD_NOTIFY)) |
50be4f4a LP |
1355 | service_start_watchdog(s); |
1356 | ||
3ebcd323 ZJS |
1357 | if (UNIT_ISSET(s->accept_socket)) { |
1358 | Socket* socket = SOCKET(UNIT_DEREF(s->accept_socket)); | |
1359 | ||
1360 | if (socket->max_connections_per_source > 0) { | |
1361 | SocketPeer *peer; | |
1362 | ||
1363 | /* Make a best-effort attempt at bumping the connection count */ | |
1364 | if (socket_acquire_peer(socket, s->socket_fd, &peer) > 0) { | |
3fabebf4 LP |
1365 | socket_peer_unref(s->socket_peer); |
1366 | s->socket_peer = peer; | |
3ebcd323 ZJS |
1367 | } |
1368 | } | |
1369 | } | |
1370 | ||
930d2838 | 1371 | service_set_state(s, s->deserialized_state); |
a16e1123 LP |
1372 | return 0; |
1373 | } | |
1374 | ||
25b583d7 LP |
1375 | static int service_collect_fds( |
1376 | Service *s, | |
1377 | int **fds, | |
1378 | char ***fd_names, | |
1379 | size_t *n_socket_fds, | |
1380 | size_t *n_storage_fds) { | |
4c47affc | 1381 | |
8dd4c05b | 1382 | _cleanup_strv_free_ char **rfd_names = NULL; |
a354329f | 1383 | _cleanup_free_ int *rfds = NULL; |
25b583d7 | 1384 | size_t rn_socket_fds = 0, rn_storage_fds = 0; |
4c47affc | 1385 | int r; |
44d8db9e LP |
1386 | |
1387 | assert(s); | |
1388 | assert(fds); | |
8dd4c05b | 1389 | assert(fd_names); |
9b141911 | 1390 | assert(n_socket_fds); |
25b583d7 | 1391 | assert(n_storage_fds); |
44d8db9e | 1392 | |
8dd4c05b | 1393 | if (s->socket_fd >= 0) { |
6cf6bbc2 | 1394 | |
8dd4c05b | 1395 | /* Pass the per-connection socket */ |
57020a3a | 1396 | |
aa7c4dd6 | 1397 | rfds = newdup(int, &s->socket_fd, 1); |
8dd4c05b LP |
1398 | if (!rfds) |
1399 | return -ENOMEM; | |
57020a3a | 1400 | |
bea1a013 | 1401 | rfd_names = strv_new("connection"); |
8dd4c05b LP |
1402 | if (!rfd_names) |
1403 | return -ENOMEM; | |
44d8db9e | 1404 | |
4c47affc | 1405 | rn_socket_fds = 1; |
8dd4c05b | 1406 | } else { |
8dd4c05b | 1407 | Unit *u; |
44d8db9e | 1408 | |
8dd4c05b | 1409 | /* Pass all our configured sockets for singleton services */ |
44d8db9e | 1410 | |
15ed3c3a | 1411 | UNIT_FOREACH_DEPENDENCY(u, UNIT(s), UNIT_ATOM_TRIGGERED_BY) { |
8dd4c05b LP |
1412 | _cleanup_free_ int *cfds = NULL; |
1413 | Socket *sock; | |
1414 | int cn_fds; | |
44d8db9e | 1415 | |
8dd4c05b LP |
1416 | if (u->type != UNIT_SOCKET) |
1417 | continue; | |
44d8db9e | 1418 | |
8dd4c05b | 1419 | sock = SOCKET(u); |
a354329f | 1420 | |
8dd4c05b LP |
1421 | cn_fds = socket_collect_fds(sock, &cfds); |
1422 | if (cn_fds < 0) | |
1423 | return cn_fds; | |
44d8db9e | 1424 | |
8dd4c05b LP |
1425 | if (cn_fds <= 0) |
1426 | continue; | |
79c7626d | 1427 | |
8dd4c05b | 1428 | if (!rfds) { |
1cc6c93a | 1429 | rfds = TAKE_PTR(cfds); |
4c47affc | 1430 | rn_socket_fds = cn_fds; |
8dd4c05b LP |
1431 | } else { |
1432 | int *t; | |
1433 | ||
62d74c78 | 1434 | t = reallocarray(rfds, rn_socket_fds + cn_fds, sizeof(int)); |
8dd4c05b LP |
1435 | if (!t) |
1436 | return -ENOMEM; | |
1437 | ||
4c47affc | 1438 | memcpy(t + rn_socket_fds, cfds, cn_fds * sizeof(int)); |
8dd4c05b LP |
1439 | |
1440 | rfds = t; | |
4c47affc | 1441 | rn_socket_fds += cn_fds; |
8dd4c05b LP |
1442 | } |
1443 | ||
1444 | r = strv_extend_n(&rfd_names, socket_fdname(sock), cn_fds); | |
1445 | if (r < 0) | |
1446 | return r; | |
44d8db9e LP |
1447 | } |
1448 | } | |
1449 | ||
a354329f | 1450 | if (s->n_fd_store > 0) { |
25b583d7 | 1451 | size_t n_fds; |
8dd4c05b | 1452 | char **nl; |
a354329f LP |
1453 | int *t; |
1454 | ||
62d74c78 | 1455 | t = reallocarray(rfds, rn_socket_fds + s->n_fd_store, sizeof(int)); |
a354329f LP |
1456 | if (!t) |
1457 | return -ENOMEM; | |
1458 | ||
1459 | rfds = t; | |
8dd4c05b | 1460 | |
62d74c78 | 1461 | nl = reallocarray(rfd_names, rn_socket_fds + s->n_fd_store + 1, sizeof(char *)); |
8dd4c05b LP |
1462 | if (!nl) |
1463 | return -ENOMEM; | |
1464 | ||
1465 | rfd_names = nl; | |
4c47affc | 1466 | n_fds = rn_socket_fds; |
8dd4c05b LP |
1467 | |
1468 | LIST_FOREACH(fd_store, fs, s->fd_store) { | |
4c47affc FB |
1469 | rfds[n_fds] = fs->fd; |
1470 | rfd_names[n_fds] = strdup(strempty(fs->fdname)); | |
1471 | if (!rfd_names[n_fds]) | |
8dd4c05b LP |
1472 | return -ENOMEM; |
1473 | ||
4c47affc FB |
1474 | rn_storage_fds++; |
1475 | n_fds++; | |
8dd4c05b LP |
1476 | } |
1477 | ||
4c47affc | 1478 | rfd_names[n_fds] = NULL; |
a354329f LP |
1479 | } |
1480 | ||
1cc6c93a YW |
1481 | *fds = TAKE_PTR(rfds); |
1482 | *fd_names = TAKE_PTR(rfd_names); | |
9b141911 | 1483 | *n_socket_fds = rn_socket_fds; |
4c47affc | 1484 | *n_storage_fds = rn_storage_fds; |
3e33402a | 1485 | |
4c47affc | 1486 | return 0; |
44d8db9e LP |
1487 | } |
1488 | ||
5686391b LP |
1489 | static int service_allocate_exec_fd_event_source( |
1490 | Service *s, | |
1491 | int fd, | |
1492 | sd_event_source **ret_event_source) { | |
1493 | ||
1494 | _cleanup_(sd_event_source_unrefp) sd_event_source *source = NULL; | |
1495 | int r; | |
1496 | ||
1497 | assert(s); | |
1498 | assert(fd >= 0); | |
1499 | assert(ret_event_source); | |
1500 | ||
1501 | r = sd_event_add_io(UNIT(s)->manager->event, &source, fd, 0, service_dispatch_exec_io, s); | |
1502 | if (r < 0) | |
1503 | return log_unit_error_errno(UNIT(s), r, "Failed to allocate exec_fd event source: %m"); | |
1504 | ||
f3a269a9 LP |
1505 | /* This is a bit higher priority than SIGCHLD, to make sure we don't confuse the case "failed to |
1506 | * start" from the case "succeeded to start, but failed immediately after". */ | |
5686391b | 1507 | |
d42b61d2 | 1508 | r = sd_event_source_set_priority(source, EVENT_PRIORITY_EXEC_FD); |
5686391b LP |
1509 | if (r < 0) |
1510 | return log_unit_error_errno(UNIT(s), r, "Failed to adjust priority of exec_fd event source: %m"); | |
1511 | ||
bc989831 | 1512 | (void) sd_event_source_set_description(source, "service exec_fd"); |
5686391b LP |
1513 | |
1514 | r = sd_event_source_set_io_fd_own(source, true); | |
1515 | if (r < 0) | |
1516 | return log_unit_error_errno(UNIT(s), r, "Failed to pass ownership of fd to event source: %m"); | |
1517 | ||
1518 | *ret_event_source = TAKE_PTR(source); | |
1519 | return 0; | |
1520 | } | |
1521 | ||
1522 | static int service_allocate_exec_fd( | |
1523 | Service *s, | |
1524 | sd_event_source **ret_event_source, | |
e78695d4 | 1525 | int *ret_exec_fd) { |
5686391b | 1526 | |
71136404 | 1527 | _cleanup_close_pair_ int p[] = EBADF_PAIR; |
5686391b LP |
1528 | int r; |
1529 | ||
1530 | assert(s); | |
1531 | assert(ret_event_source); | |
1532 | assert(ret_exec_fd); | |
1533 | ||
1534 | if (pipe2(p, O_CLOEXEC|O_NONBLOCK) < 0) | |
1535 | return log_unit_error_errno(UNIT(s), errno, "Failed to allocate exec_fd pipe: %m"); | |
1536 | ||
1537 | r = service_allocate_exec_fd_event_source(s, p[0], ret_event_source); | |
1538 | if (r < 0) | |
1539 | return r; | |
1540 | ||
e78695d4 | 1541 | TAKE_FD(p[0]); |
5686391b LP |
1542 | *ret_exec_fd = TAKE_FD(p[1]); |
1543 | ||
1544 | return 0; | |
1545 | } | |
1546 | ||
6375bd20 JW |
1547 | static bool service_exec_needs_notify_socket(Service *s, ExecFlags flags) { |
1548 | assert(s); | |
1549 | ||
1550 | /* Notifications are accepted depending on the process and | |
1551 | * the access setting of the service: | |
1552 | * process: \ access: NONE MAIN EXEC ALL | |
1553 | * main no yes yes yes | |
1554 | * control no no yes yes | |
1555 | * other (forked) no no no yes */ | |
1556 | ||
1557 | if (flags & EXEC_IS_CONTROL) | |
1558 | /* A control process */ | |
19dff691 | 1559 | return IN_SET(service_get_notify_access(s), NOTIFY_EXEC, NOTIFY_ALL); |
6375bd20 JW |
1560 | |
1561 | /* We only spawn main processes and control processes, so any | |
1562 | * process that is not a control process is a main process */ | |
19dff691 | 1563 | return service_get_notify_access(s) != NOTIFY_NONE; |
6375bd20 JW |
1564 | } |
1565 | ||
95c81c55 LB |
1566 | static Service *service_get_triggering_service(Service *s) { |
1567 | Unit *candidate = NULL, *other; | |
cdebedb4 | 1568 | |
95c81c55 | 1569 | assert(s); |
cdebedb4 | 1570 | |
95c81c55 LB |
1571 | /* Return the service which triggered service 's', this means dependency |
1572 | * types which include the UNIT_ATOM_ON_{FAILURE,SUCCESS}_OF atoms. | |
cdebedb4 | 1573 | * |
95c81c55 LB |
1574 | * N.B. if there are multiple services which could trigger 's' via OnFailure= |
1575 | * or OnSuccess= then we return NULL. This is since we don't know from which | |
1576 | * one to propagate the exit status. */ | |
1577 | ||
1578 | UNIT_FOREACH_DEPENDENCY(other, UNIT(s), UNIT_ATOM_ON_FAILURE_OF) { | |
7a5049c7 ZJS |
1579 | if (candidate) |
1580 | goto have_other; | |
95c81c55 LB |
1581 | candidate = other; |
1582 | } | |
1583 | ||
1584 | UNIT_FOREACH_DEPENDENCY(other, UNIT(s), UNIT_ATOM_ON_SUCCESS_OF) { | |
7a5049c7 ZJS |
1585 | if (candidate) |
1586 | goto have_other; | |
95c81c55 | 1587 | candidate = other; |
cdebedb4 PM |
1588 | } |
1589 | ||
95c81c55 | 1590 | return SERVICE(candidate); |
7a5049c7 ZJS |
1591 | |
1592 | have_other: | |
1593 | log_unit_warning(UNIT(s), "multiple trigger source candidates for exit status propagation (%s, %s), skipping.", | |
1594 | candidate->id, other->id); | |
1595 | return NULL; | |
cdebedb4 PM |
1596 | } |
1597 | ||
edbf8984 ZJS |
1598 | static int service_spawn_internal( |
1599 | const char *caller, | |
81a2b7ce LP |
1600 | Service *s, |
1601 | ExecCommand *c, | |
21b2ce39 | 1602 | usec_t timeout, |
c39f1ce2 | 1603 | ExecFlags flags, |
c79ab77c | 1604 | PidRef *ret_pid) { |
81a2b7ce | 1605 | |
fba173ff | 1606 | _cleanup_(exec_params_shallow_clear) ExecParameters exec_params = EXEC_PARAMETERS_INIT(flags); |
5686391b | 1607 | _cleanup_(sd_event_source_unrefp) sd_event_source *exec_fd_source = NULL; |
c3f8a065 | 1608 | _cleanup_strv_free_ char **final_env = NULL, **our_env = NULL; |
c79ab77c | 1609 | _cleanup_(pidref_done) PidRef pidref = PIDREF_NULL; |
c3f8a065 | 1610 | size_t n_env = 0; |
3c7416b6 | 1611 | pid_t pid; |
8dd4c05b LP |
1612 | int r; |
1613 | ||
edbf8984 | 1614 | assert(caller); |
034c6ed7 LP |
1615 | assert(s); |
1616 | assert(c); | |
e78695d4 | 1617 | assert(ret_pid); |
034c6ed7 | 1618 | |
edbf8984 ZJS |
1619 | log_unit_debug(UNIT(s), "Will spawn child (%s): %s", caller, c->path); |
1620 | ||
78f93209 | 1621 | r = unit_prepare_exec(UNIT(s)); /* This realizes the cgroup, among other things */ |
3c7416b6 LP |
1622 | if (r < 0) |
1623 | return r; | |
1624 | ||
bc989831 ZJS |
1625 | assert(!s->exec_fd_event_source); |
1626 | ||
9c1a61ad LP |
1627 | if (flags & EXEC_IS_CONTROL) { |
1628 | /* If this is a control process, mask the permissions/chroot application if this is requested. */ | |
1629 | if (s->permissions_start_only) | |
1703fa41 | 1630 | exec_params.flags &= ~EXEC_APPLY_SANDBOXING; |
9c1a61ad LP |
1631 | if (s->root_directory_start_only) |
1632 | exec_params.flags &= ~EXEC_APPLY_CHROOT; | |
1633 | } | |
1634 | ||
c39f1ce2 | 1635 | if ((flags & EXEC_PASS_FDS) || |
6cf6bbc2 LP |
1636 | s->exec_context.std_input == EXEC_INPUT_SOCKET || |
1637 | s->exec_context.std_output == EXEC_OUTPUT_SOCKET || | |
1638 | s->exec_context.std_error == EXEC_OUTPUT_SOCKET) { | |
1639 | ||
c3f8a065 LP |
1640 | r = service_collect_fds(s, |
1641 | &exec_params.fds, | |
1642 | &exec_params.fd_names, | |
1643 | &exec_params.n_socket_fds, | |
1644 | &exec_params.n_storage_fds); | |
8dd4c05b | 1645 | if (r < 0) |
36c16a7c | 1646 | return r; |
6cf6bbc2 | 1647 | |
cd48e23f RP |
1648 | exec_params.open_files = s->open_files; |
1649 | ||
c3f8a065 | 1650 | log_unit_debug(UNIT(s), "Passing %zu fds to service", exec_params.n_socket_fds + exec_params.n_storage_fds); |
4f2d528d | 1651 | } |
44d8db9e | 1652 | |
5686391b | 1653 | if (!FLAGS_SET(flags, EXEC_IS_CONTROL) && s->type == SERVICE_EXEC) { |
c3f8a065 | 1654 | r = service_allocate_exec_fd(s, &exec_fd_source, &exec_params.exec_fd); |
5686391b LP |
1655 | if (r < 0) |
1656 | return r; | |
1657 | } | |
1658 | ||
e5d6dcce | 1659 | r = service_arm_timer(s, /* relative= */ true, timeout); |
36c16a7c LP |
1660 | if (r < 0) |
1661 | return r; | |
034c6ed7 | 1662 | |
75b29fda | 1663 | our_env = new0(char*, 13); |
36c16a7c LP |
1664 | if (!our_env) |
1665 | return -ENOMEM; | |
c952c6ec | 1666 | |
3bdc25a4 | 1667 | if (service_exec_needs_notify_socket(s, flags)) { |
36c16a7c LP |
1668 | if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) |
1669 | return -ENOMEM; | |
c952c6ec | 1670 | |
3bdc25a4 | 1671 | exec_params.notify_socket = UNIT(s)->manager->notify_socket; |
75b29fda LP |
1672 | |
1673 | if (s->n_fd_store_max > 0) | |
1674 | if (asprintf(our_env + n_env++, "FDSTORE=%u", s->n_fd_store_max) < 0) | |
1675 | return -ENOMEM; | |
3bdc25a4 LP |
1676 | } |
1677 | ||
c79ab77c LP |
1678 | if (pidref_is_set(&s->main_pid)) |
1679 | if (asprintf(our_env + n_env++, "MAINPID="PID_FMT, s->main_pid.pid) < 0) | |
36c16a7c | 1680 | return -ENOMEM; |
2105e76a | 1681 | |
c39f1ce2 | 1682 | if (MANAGER_IS_USER(UNIT(s)->manager)) |
df0ff127 | 1683 | if (asprintf(our_env + n_env++, "MANAGERPID="PID_FMT, getpid_cached()) < 0) |
36c16a7c | 1684 | return -ENOMEM; |
97ae63e2 | 1685 | |
dcf3c3c3 LP |
1686 | if (s->pid_file) |
1687 | if (asprintf(our_env + n_env++, "PIDFILE=%s", s->pid_file) < 0) | |
1688 | return -ENOMEM; | |
1689 | ||
8dd4c05b | 1690 | if (s->socket_fd >= 0) { |
3b1c5241 SL |
1691 | union sockaddr_union sa; |
1692 | socklen_t salen = sizeof(sa); | |
1693 | ||
f56e7bfe LP |
1694 | /* If this is a per-connection service instance, let's set $REMOTE_ADDR and $REMOTE_PORT to something |
1695 | * useful. Note that we do this only when we are still connected at this point in time, which we might | |
1696 | * very well not be. Hence we ignore all errors when retrieving peer information (as that might result | |
1697 | * in ENOTCONN), and just use whate we can use. */ | |
f2dbd059 | 1698 | |
f56e7bfe LP |
1699 | if (getpeername(s->socket_fd, &sa.sa, &salen) >= 0 && |
1700 | IN_SET(sa.sa.sa_family, AF_INET, AF_INET6, AF_VSOCK)) { | |
3b1c5241 SL |
1701 | _cleanup_free_ char *addr = NULL; |
1702 | char *t; | |
882ac6e7 | 1703 | unsigned port; |
3b1c5241 SL |
1704 | |
1705 | r = sockaddr_pretty(&sa.sa, salen, true, false, &addr); | |
1706 | if (r < 0) | |
36c16a7c | 1707 | return r; |
3b1c5241 | 1708 | |
b910cc72 | 1709 | t = strjoin("REMOTE_ADDR=", addr); |
36c16a7c LP |
1710 | if (!t) |
1711 | return -ENOMEM; | |
3b1c5241 SL |
1712 | our_env[n_env++] = t; |
1713 | ||
882ac6e7 SH |
1714 | r = sockaddr_port(&sa.sa, &port); |
1715 | if (r < 0) | |
1716 | return r; | |
3b1c5241 | 1717 | |
36c16a7c LP |
1718 | if (asprintf(&t, "REMOTE_PORT=%u", port) < 0) |
1719 | return -ENOMEM; | |
3b1c5241 SL |
1720 | our_env[n_env++] = t; |
1721 | } | |
1722 | } | |
1723 | ||
95c81c55 LB |
1724 | Service *env_source = NULL; |
1725 | const char *monitor_prefix; | |
136dc4c4 | 1726 | if (flags & EXEC_SETENV_RESULT) { |
95c81c55 LB |
1727 | env_source = s; |
1728 | monitor_prefix = ""; | |
1729 | } else if (flags & EXEC_SETENV_MONITOR_RESULT) { | |
1730 | env_source = service_get_triggering_service(s); | |
1731 | monitor_prefix = "MONITOR_"; | |
1732 | } | |
1733 | ||
1734 | if (env_source) { | |
1735 | if (asprintf(our_env + n_env++, "%sSERVICE_RESULT=%s", monitor_prefix, service_result_to_string(env_source->result)) < 0) | |
136dc4c4 LP |
1736 | return -ENOMEM; |
1737 | ||
95c81c55 LB |
1738 | if (env_source->main_exec_status.pid > 0 && |
1739 | dual_timestamp_is_set(&env_source->main_exec_status.exit_timestamp)) { | |
1740 | if (asprintf(our_env + n_env++, "%sEXIT_CODE=%s", monitor_prefix, sigchld_code_to_string(env_source->main_exec_status.code)) < 0) | |
136dc4c4 LP |
1741 | return -ENOMEM; |
1742 | ||
95c81c55 LB |
1743 | if (env_source->main_exec_status.code == CLD_EXITED) |
1744 | r = asprintf(our_env + n_env++, "%sEXIT_STATUS=%i", monitor_prefix, env_source->main_exec_status.status); | |
136dc4c4 | 1745 | else |
95c81c55 | 1746 | r = asprintf(our_env + n_env++, "%sEXIT_STATUS=%s", monitor_prefix, signal_to_string(env_source->main_exec_status.status)); |
cdebedb4 | 1747 | |
136dc4c4 LP |
1748 | if (r < 0) |
1749 | return -ENOMEM; | |
1750 | } | |
cdebedb4 | 1751 | |
95c81c55 LB |
1752 | if (env_source != s) { |
1753 | if (!sd_id128_is_null(UNIT(env_source)->invocation_id)) { | |
1754 | r = asprintf(our_env + n_env++, "%sINVOCATION_ID=" SD_ID128_FORMAT_STR, | |
1755 | monitor_prefix, SD_ID128_FORMAT_VAL(UNIT(env_source)->invocation_id)); | |
1756 | if (r < 0) | |
1757 | return -ENOMEM; | |
1758 | } | |
1759 | ||
1760 | if (asprintf(our_env + n_env++, "%sUNIT=%s", monitor_prefix, UNIT(env_source)->id) < 0) | |
1761 | return -ENOMEM; | |
cdebedb4 | 1762 | } |
136dc4c4 LP |
1763 | } |
1764 | ||
48b92b37 LB |
1765 | if (UNIT(s)->activation_details) { |
1766 | r = activation_details_append_env(UNIT(s)->activation_details, &our_env); | |
1767 | if (r < 0) | |
1768 | return r; | |
1769 | /* The number of env vars added here can vary, rather than keeping the allocation block in | |
1770 | * sync manually, these functions simply use the strv methods to append to it, so we need | |
1771 | * to update n_env when we are done in case of future usage. */ | |
1772 | n_env += r; | |
1773 | } | |
1774 | ||
1ad6e8b3 LP |
1775 | r = unit_set_exec_params(UNIT(s), &exec_params); |
1776 | if (r < 0) | |
1777 | return r; | |
3536f49e | 1778 | |
4ab3d29f | 1779 | final_env = strv_env_merge(exec_params.environment, our_env); |
36c16a7c LP |
1780 | if (!final_env) |
1781 | return -ENOMEM; | |
c952c6ec | 1782 | |
ac647978 | 1783 | /* System D-Bus needs nss-systemd disabled, so that we don't deadlock */ |
de90700f | 1784 | SET_FLAG(exec_params.flags, EXEC_NSS_DYNAMIC_BYPASS, |
ac647978 | 1785 | MANAGER_IS_SYSTEM(UNIT(s)->manager) && unit_has_name(UNIT(s), SPECIAL_DBUS_SERVICE)); |
4ad49000 | 1786 | |
b9c04eaf | 1787 | strv_free_and_replace(exec_params.environment, final_env); |
34b3f625 | 1788 | exec_params.watchdog_usec = service_get_watchdog_usec(s); |
a34ceba6 | 1789 | exec_params.selinux_context_net = s->socket_fd_selinux_context_net; |
9fa95f85 DM |
1790 | if (s->type == SERVICE_IDLE) |
1791 | exec_params.idle_pipe = UNIT(s)->manager->idle_pipe; | |
a34ceba6 LP |
1792 | exec_params.stdin_fd = s->stdin_fd; |
1793 | exec_params.stdout_fd = s->stdout_fd; | |
1794 | exec_params.stderr_fd = s->stderr_fd; | |
9fa95f85 | 1795 | |
f2341e0a LP |
1796 | r = exec_spawn(UNIT(s), |
1797 | c, | |
9e2f7c11 | 1798 | &s->exec_context, |
9fa95f85 | 1799 | &exec_params, |
613b411c | 1800 | s->exec_runtime, |
6bb00842 | 1801 | &s->cgroup_context, |
9e2f7c11 | 1802 | &pid); |
9e2f7c11 | 1803 | if (r < 0) |
36c16a7c | 1804 | return r; |
034c6ed7 | 1805 | |
5686391b LP |
1806 | s->exec_fd_event_source = TAKE_PTR(exec_fd_source); |
1807 | s->exec_fd_hot = false; | |
1808 | ||
c79ab77c | 1809 | r = pidref_set_pid(&pidref, pid); |
f75f613d | 1810 | if (r < 0) |
36c16a7c | 1811 | return r; |
034c6ed7 | 1812 | |
495e75ed | 1813 | r = unit_watch_pidref(UNIT(s), &pidref, /* exclusive= */ true); |
c79ab77c LP |
1814 | if (r < 0) |
1815 | return r; | |
034c6ed7 | 1816 | |
c79ab77c | 1817 | *ret_pid = TAKE_PIDREF(pidref); |
5cb5a6ff | 1818 | return 0; |
034c6ed7 LP |
1819 | } |
1820 | ||
80876c20 LP |
1821 | static int main_pid_good(Service *s) { |
1822 | assert(s); | |
1823 | ||
51894d70 | 1824 | /* Returns 0 if the pid is dead, > 0 if it is good, < 0 if we don't know */ |
80876c20 | 1825 | |
c79ab77c | 1826 | /* If we know the pid file, then let's just check if it is still valid */ |
6dfa5494 LP |
1827 | if (s->main_pid_known) { |
1828 | ||
c79ab77c LP |
1829 | /* If it's an alien child let's check if it is still alive ... */ |
1830 | if (s->main_pid_alien && pidref_is_set(&s->main_pid)) | |
becdfcb9 | 1831 | return pidref_is_alive(&s->main_pid); |
6dfa5494 | 1832 | |
c79ab77c LP |
1833 | /* .. otherwise assume we'll get a SIGCHLD for it, which we really should wait for to collect |
1834 | * exit status and code */ | |
1835 | return pidref_is_set(&s->main_pid); | |
6dfa5494 | 1836 | } |
80876c20 LP |
1837 | |
1838 | /* We don't know the pid */ | |
1839 | return -EAGAIN; | |
1840 | } | |
1841 | ||
019be286 | 1842 | static int control_pid_good(Service *s) { |
80876c20 LP |
1843 | assert(s); |
1844 | ||
07697d7e LP |
1845 | /* Returns 0 if the control PID is dead, > 0 if it is good. We never actually return < 0 here, but in order to |
1846 | * make this function as similar as possible to main_pid_good() and cgroup_good(), we pretend that < 0 also | |
1847 | * means: we can't figure it out. */ | |
1848 | ||
c79ab77c | 1849 | return pidref_is_set(&s->control_pid); |
80876c20 LP |
1850 | } |
1851 | ||
cb0e818f HC |
1852 | static int cgroup_good(Service *s) { |
1853 | int r; | |
1854 | ||
abaf5edd ZJS |
1855 | assert(s); |
1856 | ||
cb0e818f HC |
1857 | /* Returns 0 if the cgroup is empty or doesn't exist, > 0 if it is exists and is populated, < 0 if we can't |
1858 | * figure it out */ | |
1859 | ||
abaf5edd ZJS |
1860 | if (!UNIT(s)->cgroup_path) |
1861 | return 0; | |
1862 | ||
1863 | r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, UNIT(s)->cgroup_path); | |
117dcc57 | 1864 | if (r < 0) |
80876c20 LP |
1865 | return r; |
1866 | ||
b13ddbbc | 1867 | return r == 0; |
80876c20 LP |
1868 | } |
1869 | ||
ebc57b89 | 1870 | static bool service_shall_restart(Service *s, const char **reason) { |
a509f0e6 LP |
1871 | assert(s); |
1872 | ||
1873 | /* Don't restart after manual stops */ | |
ebc57b89 ZJS |
1874 | if (s->forbid_restart) { |
1875 | *reason = "manual stop"; | |
a509f0e6 | 1876 | return false; |
ebc57b89 | 1877 | } |
a509f0e6 LP |
1878 | |
1879 | /* Never restart if this is configured as special exception */ | |
ebc57b89 ZJS |
1880 | if (exit_status_set_test(&s->restart_prevent_status, s->main_exec_status.code, s->main_exec_status.status)) { |
1881 | *reason = "prevented by exit status"; | |
a509f0e6 | 1882 | return false; |
ebc57b89 | 1883 | } |
a509f0e6 LP |
1884 | |
1885 | /* Restart if the exit code/status are configured as restart triggers */ | |
ebc57b89 ZJS |
1886 | if (exit_status_set_test(&s->restart_force_status, s->main_exec_status.code, s->main_exec_status.status)) { |
1887 | *reason = "forced by exit status"; | |
a509f0e6 | 1888 | return true; |
ebc57b89 | 1889 | } |
a509f0e6 | 1890 | |
ebc57b89 | 1891 | *reason = "restart setting"; |
a509f0e6 LP |
1892 | switch (s->restart) { |
1893 | ||
1894 | case SERVICE_RESTART_NO: | |
1895 | return false; | |
1896 | ||
1897 | case SERVICE_RESTART_ALWAYS: | |
abb99360 | 1898 | return s->result != SERVICE_SKIP_CONDITION; |
a509f0e6 LP |
1899 | |
1900 | case SERVICE_RESTART_ON_SUCCESS: | |
1901 | return s->result == SERVICE_SUCCESS; | |
1902 | ||
1903 | case SERVICE_RESTART_ON_FAILURE: | |
bb924478 | 1904 | return !IN_SET(s->result, SERVICE_SUCCESS, SERVICE_SKIP_CONDITION); |
a509f0e6 LP |
1905 | |
1906 | case SERVICE_RESTART_ON_ABNORMAL: | |
bb924478 | 1907 | return !IN_SET(s->result, SERVICE_SUCCESS, SERVICE_FAILURE_EXIT_CODE, SERVICE_SKIP_CONDITION); |
a509f0e6 LP |
1908 | |
1909 | case SERVICE_RESTART_ON_WATCHDOG: | |
1910 | return s->result == SERVICE_FAILURE_WATCHDOG; | |
1911 | ||
1912 | case SERVICE_RESTART_ON_ABORT: | |
1913 | return IN_SET(s->result, SERVICE_FAILURE_SIGNAL, SERVICE_FAILURE_CORE_DUMP); | |
1914 | ||
1915 | default: | |
04499a70 | 1916 | assert_not_reached(); |
a509f0e6 LP |
1917 | } |
1918 | } | |
1919 | ||
deb4e708 MK |
1920 | static bool service_will_restart(Unit *u) { |
1921 | Service *s = SERVICE(u); | |
1922 | ||
53f47dfc YW |
1923 | assert(s); |
1924 | ||
09d04ad3 | 1925 | if (IN_SET(s->state, SERVICE_DEAD_BEFORE_AUTO_RESTART, SERVICE_FAILED_BEFORE_AUTO_RESTART, SERVICE_AUTO_RESTART, SERVICE_AUTO_RESTART_QUEUED)) |
53f47dfc | 1926 | return true; |
2ad2e41a | 1927 | |
52a12341 | 1928 | return unit_will_restart_default(u); |
53f47dfc YW |
1929 | } |
1930 | ||
b9c1883a LP |
1931 | static ServiceState service_determine_dead_state(Service *s) { |
1932 | assert(s); | |
1933 | ||
1934 | return s->fd_store && s->fd_store_preserve_mode == EXEC_PRESERVE_YES ? SERVICE_DEAD_RESOURCES_PINNED : SERVICE_DEAD; | |
1935 | } | |
1936 | ||
f42806df | 1937 | static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) { |
a1d31573 | 1938 | ServiceState end_state, restart_state; |
034c6ed7 | 1939 | int r; |
0f52f8e5 | 1940 | |
034c6ed7 LP |
1941 | assert(s); |
1942 | ||
0f52f8e5 LP |
1943 | /* If there's a stop job queued before we enter the DEAD state, we shouldn't act on Restart=, in order to not |
1944 | * undo what has already been enqueued. */ | |
1945 | if (unit_stop_pending(UNIT(s))) | |
1946 | allow_restart = false; | |
1947 | ||
a0fef983 | 1948 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1949 | s->result = f; |
034c6ed7 | 1950 | |
31cd5f63 AZ |
1951 | if (s->result == SERVICE_SUCCESS) { |
1952 | unit_log_success(UNIT(s)); | |
b9c1883a | 1953 | end_state = service_determine_dead_state(s); |
a1d31573 | 1954 | restart_state = SERVICE_DEAD_BEFORE_AUTO_RESTART; |
31cd5f63 AZ |
1955 | } else if (s->result == SERVICE_SKIP_CONDITION) { |
1956 | unit_log_skip(UNIT(s), service_result_to_string(s->result)); | |
b9c1883a | 1957 | end_state = service_determine_dead_state(s); |
a1d31573 | 1958 | restart_state = SERVICE_DEAD_BEFORE_AUTO_RESTART; |
31cd5f63 AZ |
1959 | } else { |
1960 | unit_log_failure(UNIT(s), service_result_to_string(s->result)); | |
1961 | end_state = SERVICE_FAILED; | |
a1d31573 | 1962 | restart_state = SERVICE_FAILED_BEFORE_AUTO_RESTART; |
31cd5f63 | 1963 | } |
4c425434 | 1964 | unit_warn_leftover_processes(UNIT(s), unit_log_leftover_process_stop); |
ed77d407 | 1965 | |
ebc57b89 ZJS |
1966 | if (!allow_restart) |
1967 | log_unit_debug(UNIT(s), "Service restart not allowed."); | |
1968 | else { | |
1969 | const char *reason; | |
ebc57b89 | 1970 | |
49b34f75 | 1971 | allow_restart = service_shall_restart(s, &reason); |
ebc57b89 | 1972 | log_unit_debug(UNIT(s), "Service will %srestart (%s)", |
49b34f75 | 1973 | allow_restart ? "" : "not ", |
ebc57b89 | 1974 | reason); |
ebc57b89 | 1975 | } |
deb4e708 | 1976 | |
49b34f75 | 1977 | if (allow_restart) { |
fe3d33c1 MY |
1978 | usec_t restart_usec_next; |
1979 | ||
a1d31573 LP |
1980 | /* We make two state changes here: one that maps to the high-level UNIT_INACTIVE/UNIT_FAILED |
1981 | * state (i.e. a state indicating deactivation), and then one that that maps to the | |
1982 | * high-level UNIT_STARTING state (i.e. a state indicating activation). We do this so that | |
1983 | * external software can watch the state changes and see all service failures, even if they | |
1984 | * are only transitionary and followed by an automatic restart. We have fine-grained | |
1985 | * low-level states for this though so that software can distinguish the permanent UNIT_INACTIVE | |
1986 | * state from this transitionary UNIT_INACTIVE state by looking at the low-level states. */ | |
e568fea9 RP |
1987 | if (s->restart_mode != SERVICE_RESTART_MODE_DIRECT) |
1988 | service_set_state(s, restart_state); | |
a1d31573 | 1989 | |
fe3d33c1 MY |
1990 | restart_usec_next = service_restart_usec_next(s); |
1991 | ||
1992 | r = service_arm_timer(s, /* relative= */ true, restart_usec_next); | |
10691b9e LP |
1993 | if (r < 0) { |
1994 | log_unit_warning_errno(UNIT(s), r, "Failed to install restart timer: %m"); | |
1995 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, /* allow_restart= */ false); | |
1996 | return; | |
1997 | } | |
034c6ed7 | 1998 | |
fe3d33c1 MY |
1999 | log_unit_debug(UNIT(s), "Next restart interval calculated as: %s", FORMAT_TIMESPAN(restart_usec_next, 0)); |
2000 | ||
034c6ed7 | 2001 | service_set_state(s, SERVICE_AUTO_RESTART); |
a1d31573 LP |
2002 | } else { |
2003 | service_set_state(s, end_state); | |
2004 | ||
7a0019d3 LP |
2005 | /* If we shan't restart, then flush out the restart counter. But don't do that immediately, so that the |
2006 | * user can still introspect the counter. Do so on the next start. */ | |
2007 | s->flush_n_restarts = true; | |
a1d31573 | 2008 | } |
034c6ed7 | 2009 | |
5238e957 | 2010 | /* The new state is in effect, let's decrease the fd store ref counter again. Let's also re-add us to the GC |
7eb2a8a1 | 2011 | * queue, so that the fd store is possibly gc'ed again */ |
7eb2a8a1 LP |
2012 | unit_add_to_gc_queue(UNIT(s)); |
2013 | ||
f2341e0a | 2014 | /* The next restart might not be a manual stop, hence reset the flag indicating manual stops */ |
47342320 LP |
2015 | s->forbid_restart = false; |
2016 | ||
19dff691 MY |
2017 | /* Reset NotifyAccess override */ |
2018 | s->notify_access_override = _NOTIFY_ACCESS_INVALID; | |
2019 | ||
9c0c6701 | 2020 | /* We want fresh tmpdirs and ephemeral snapshots in case the service is started again immediately. */ |
28135da3 | 2021 | s->exec_runtime = exec_runtime_destroy(s->exec_runtime); |
c17ec25e | 2022 | |
95939aed | 2023 | /* Also, remove the runtime directory */ |
bb0c0d6f | 2024 | unit_destroy_runtime_data(UNIT(s), &s->exec_context); |
e66cf1a3 | 2025 | |
b9c1883a LP |
2026 | /* Also get rid of the fd store, if that's configured. */ |
2027 | if (s->fd_store_preserve_mode == EXEC_PRESERVE_NO) | |
2028 | service_release_fd_store(s); | |
2029 | ||
00d9ef85 LP |
2030 | /* Get rid of the IPC bits of the user */ |
2031 | unit_unref_uid_gid(UNIT(s), true); | |
2032 | ||
9285c9ff LN |
2033 | /* Try to delete the pid file. At this point it will be |
2034 | * out-of-date, and some software might be confused by it, so | |
2035 | * let's remove it. */ | |
2036 | if (s->pid_file) | |
fabab190 | 2037 | (void) unlink(s->pid_file); |
9285c9ff | 2038 | |
6f765baf LP |
2039 | /* Reset TTY ownership if necessary */ |
2040 | exec_context_revert_tty(&s->exec_context); | |
034c6ed7 LP |
2041 | } |
2042 | ||
f42806df | 2043 | static void service_enter_stop_post(Service *s, ServiceResult f) { |
034c6ed7 LP |
2044 | int r; |
2045 | assert(s); | |
2046 | ||
a0fef983 | 2047 | if (s->result == SERVICE_SUCCESS) |
f42806df | 2048 | s->result = f; |
034c6ed7 | 2049 | |
5e94833f | 2050 | service_unwatch_control_pid(s); |
50be4f4a | 2051 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
5e94833f | 2052 | |
117dcc57 ZJS |
2053 | s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST]; |
2054 | if (s->control_command) { | |
867b3b7d | 2055 | s->control_command_id = SERVICE_EXEC_STOP_POST; |
c79ab77c | 2056 | pidref_done(&s->control_pid); |
867b3b7d | 2057 | |
ecedd90f LP |
2058 | r = service_spawn(s, |
2059 | s->control_command, | |
21b2ce39 | 2060 | s->timeout_stop_usec, |
78f93209 | 2061 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_IS_CONTROL|EXEC_SETENV_RESULT|EXEC_CONTROL_CGROUP, |
ecedd90f | 2062 | &s->control_pid); |
10691b9e LP |
2063 | if (r < 0) { |
2064 | log_unit_warning_errno(UNIT(s), r, "Failed to spawn 'stop-post' task: %m"); | |
2065 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); | |
2066 | return; | |
2067 | } | |
034c6ed7 | 2068 | |
80876c20 LP |
2069 | service_set_state(s, SERVICE_STOP_POST); |
2070 | } else | |
ac84d1fb | 2071 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
2072 | } |
2073 | ||
a232ebcc | 2074 | static int state_to_kill_operation(Service *s, ServiceState state) { |
4940c0b0 LP |
2075 | switch (state) { |
2076 | ||
c87700a1 | 2077 | case SERVICE_STOP_WATCHDOG: |
bf760801 | 2078 | case SERVICE_FINAL_WATCHDOG: |
c87700a1 | 2079 | return KILL_WATCHDOG; |
4940c0b0 LP |
2080 | |
2081 | case SERVICE_STOP_SIGTERM: | |
a232ebcc ZJS |
2082 | if (unit_has_job_type(UNIT(s), JOB_RESTART)) |
2083 | return KILL_RESTART; | |
2084 | _fallthrough_; | |
2085 | ||
4940c0b0 LP |
2086 | case SERVICE_FINAL_SIGTERM: |
2087 | return KILL_TERMINATE; | |
2088 | ||
2089 | case SERVICE_STOP_SIGKILL: | |
2090 | case SERVICE_FINAL_SIGKILL: | |
2091 | return KILL_KILL; | |
2092 | ||
2093 | default: | |
2094 | return _KILL_OPERATION_INVALID; | |
2095 | } | |
2096 | } | |
2097 | ||
f42806df | 2098 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) { |
bf760801 | 2099 | int kill_operation, r; |
034c6ed7 LP |
2100 | |
2101 | assert(s); | |
2102 | ||
a0fef983 | 2103 | if (s->result == SERVICE_SUCCESS) |
f42806df | 2104 | s->result = f; |
034c6ed7 | 2105 | |
50be4f4a LP |
2106 | /* Before sending any signal, make sure we track all members of this cgroup */ |
2107 | (void) unit_watch_all_pids(UNIT(s)); | |
2108 | ||
2109 | /* Also, enqueue a job that we recheck all our PIDs a bit later, given that it's likely some processes have | |
2110 | * died now */ | |
2111 | (void) unit_enqueue_rewatch_pids(UNIT(s)); | |
a911bb9a | 2112 | |
bf760801 | 2113 | kill_operation = state_to_kill_operation(s, state); |
b826e317 | 2114 | r = unit_kill_context(UNIT(s), kill_operation); |
10691b9e LP |
2115 | if (r < 0) { |
2116 | log_unit_warning_errno(UNIT(s), r, "Failed to kill processes: %m"); | |
cd2086fe | 2117 | goto fail; |
10691b9e | 2118 | } |
034c6ed7 | 2119 | |
cd2086fe | 2120 | if (r > 0) { |
e5d6dcce LP |
2121 | r = service_arm_timer(s, /* relative= */ true, |
2122 | kill_operation == KILL_WATCHDOG ? service_timeout_abort_usec(s) : s->timeout_stop_usec); | |
10691b9e LP |
2123 | if (r < 0) { |
2124 | log_unit_warning_errno(UNIT(s), r, "Failed to install timer: %m"); | |
36c16a7c | 2125 | goto fail; |
10691b9e | 2126 | } |
d6ea93e3 | 2127 | |
80876c20 | 2128 | service_set_state(s, state); |
c87700a1 | 2129 | } else if (IN_SET(state, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM) && s->kill_context.send_sigkill) |
ac84d1fb | 2130 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_SUCCESS); |
c87700a1 | 2131 | else if (IN_SET(state, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 2132 | service_enter_stop_post(s, SERVICE_SUCCESS); |
bf760801 | 2133 | else if (IN_SET(state, SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM) && s->kill_context.send_sigkill) |
ac84d1fb | 2134 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_SUCCESS); |
80876c20 | 2135 | else |
10691b9e | 2136 | service_enter_dead(s, SERVICE_SUCCESS, /* allow_restart= */ true); |
034c6ed7 LP |
2137 | |
2138 | return; | |
2139 | ||
2140 | fail: | |
c87700a1 | 2141 | if (IN_SET(state, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 2142 | service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES); |
034c6ed7 | 2143 | else |
10691b9e | 2144 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, /* allow_restart= */ true); |
034c6ed7 LP |
2145 | } |
2146 | ||
308d72dc | 2147 | static void service_enter_stop_by_notify(Service *s) { |
3dde96d8 LP |
2148 | int r; |
2149 | ||
308d72dc LP |
2150 | assert(s); |
2151 | ||
50be4f4a | 2152 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
308d72dc | 2153 | |
3dde96d8 LP |
2154 | r = service_arm_timer(s, /* relative= */ true, s->timeout_stop_usec); |
2155 | if (r < 0) { | |
2156 | log_unit_warning_errno(UNIT(s), r, "Failed to install timer: %m"); | |
2157 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); | |
2158 | return; | |
2159 | } | |
308d72dc | 2160 | |
6041a7ee MS |
2161 | /* The service told us it's stopping, so it's as if we SIGTERM'd it. */ |
2162 | service_set_state(s, SERVICE_STOP_SIGTERM); | |
308d72dc LP |
2163 | } |
2164 | ||
f42806df | 2165 | static void service_enter_stop(Service *s, ServiceResult f) { |
034c6ed7 | 2166 | int r; |
5925dd3c | 2167 | |
034c6ed7 LP |
2168 | assert(s); |
2169 | ||
a0fef983 | 2170 | if (s->result == SERVICE_SUCCESS) |
f42806df | 2171 | s->result = f; |
034c6ed7 | 2172 | |
5e94833f | 2173 | service_unwatch_control_pid(s); |
50be4f4a | 2174 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
5e94833f | 2175 | |
117dcc57 ZJS |
2176 | s->control_command = s->exec_command[SERVICE_EXEC_STOP]; |
2177 | if (s->control_command) { | |
867b3b7d | 2178 | s->control_command_id = SERVICE_EXEC_STOP; |
c79ab77c | 2179 | pidref_done(&s->control_pid); |
867b3b7d | 2180 | |
ecedd90f LP |
2181 | r = service_spawn(s, |
2182 | s->control_command, | |
21b2ce39 | 2183 | s->timeout_stop_usec, |
78f93209 | 2184 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_SETENV_RESULT|EXEC_CONTROL_CGROUP, |
ecedd90f | 2185 | &s->control_pid); |
10691b9e LP |
2186 | if (r < 0) { |
2187 | log_unit_warning_errno(UNIT(s), r, "Failed to spawn 'stop' task: %m"); | |
2188 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); | |
2189 | return; | |
2190 | } | |
034c6ed7 | 2191 | |
80876c20 LP |
2192 | service_set_state(s, SERVICE_STOP); |
2193 | } else | |
f42806df | 2194 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
2195 | } |
2196 | ||
957c3cf9 LP |
2197 | static bool service_good(Service *s) { |
2198 | int main_pid_ok; | |
2199 | assert(s); | |
2200 | ||
2201 | if (s->type == SERVICE_DBUS && !s->bus_name_good) | |
2202 | return false; | |
2203 | ||
2204 | main_pid_ok = main_pid_good(s); | |
2205 | if (main_pid_ok > 0) /* It's alive */ | |
2206 | return true; | |
ef430065 | 2207 | if (main_pid_ok == 0 && s->exit_type == SERVICE_EXIT_MAIN) /* It's dead */ |
957c3cf9 LP |
2208 | return false; |
2209 | ||
2210 | /* OK, we don't know anything about the main PID, maybe | |
2211 | * because there is none. Let's check the control group | |
2212 | * instead. */ | |
2213 | ||
2214 | return cgroup_good(s) != 0; | |
2215 | } | |
2216 | ||
f42806df | 2217 | static void service_enter_running(Service *s, ServiceResult f) { |
3dde96d8 LP |
2218 | int r; |
2219 | ||
80876c20 LP |
2220 | assert(s); |
2221 | ||
a0fef983 | 2222 | if (s->result == SERVICE_SUCCESS) |
f42806df | 2223 | s->result = f; |
80876c20 | 2224 | |
089b64d5 LP |
2225 | service_unwatch_control_pid(s); |
2226 | ||
ec5b1452 LP |
2227 | if (s->result != SERVICE_SUCCESS) |
2228 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); | |
2229 | else if (service_good(s)) { | |
308d72dc | 2230 | |
ec5b1452 | 2231 | /* If there are any queued up sd_notify() notifications, process them now */ |
308d72dc LP |
2232 | if (s->notify_state == NOTIFY_RELOADING) |
2233 | service_enter_reload_by_notify(s); | |
2234 | else if (s->notify_state == NOTIFY_STOPPING) | |
2235 | service_enter_stop_by_notify(s); | |
36c16a7c | 2236 | else { |
308d72dc | 2237 | service_set_state(s, SERVICE_RUNNING); |
3dde96d8 LP |
2238 | |
2239 | r = service_arm_timer(s, /* relative= */ false, service_running_timeout(s)); | |
2240 | if (r < 0) { | |
2241 | log_unit_warning_errno(UNIT(s), r, "Failed to install timer: %m"); | |
2242 | service_enter_running(s, SERVICE_FAILURE_RESOURCES); | |
2243 | return; | |
2244 | } | |
36c16a7c | 2245 | } |
308d72dc | 2246 | |
ec5b1452 | 2247 | } else if (s->remain_after_exit) |
80876c20 LP |
2248 | service_set_state(s, SERVICE_EXITED); |
2249 | else | |
f42806df | 2250 | service_enter_stop(s, SERVICE_SUCCESS); |
80876c20 LP |
2251 | } |
2252 | ||
034c6ed7 LP |
2253 | static void service_enter_start_post(Service *s) { |
2254 | int r; | |
2255 | assert(s); | |
2256 | ||
5e94833f | 2257 | service_unwatch_control_pid(s); |
842129f5 | 2258 | service_reset_watchdog(s); |
bb242b7b | 2259 | |
117dcc57 ZJS |
2260 | s->control_command = s->exec_command[SERVICE_EXEC_START_POST]; |
2261 | if (s->control_command) { | |
867b3b7d | 2262 | s->control_command_id = SERVICE_EXEC_START_POST; |
c79ab77c | 2263 | pidref_done(&s->control_pid); |
867b3b7d | 2264 | |
ecedd90f LP |
2265 | r = service_spawn(s, |
2266 | s->control_command, | |
21b2ce39 | 2267 | s->timeout_start_usec, |
78f93209 | 2268 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_CONTROL_CGROUP, |
ecedd90f | 2269 | &s->control_pid); |
10691b9e LP |
2270 | if (r < 0) { |
2271 | log_unit_warning_errno(UNIT(s), r, "Failed to spawn 'start-post' task: %m"); | |
2272 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); | |
2273 | return; | |
2274 | } | |
034c6ed7 | 2275 | |
80876c20 LP |
2276 | service_set_state(s, SERVICE_START_POST); |
2277 | } else | |
f42806df | 2278 | service_enter_running(s, SERVICE_SUCCESS); |
034c6ed7 LP |
2279 | } |
2280 | ||
e9a4f676 | 2281 | static void service_kill_control_process(Service *s) { |
a6951a50 | 2282 | int r; |
4ad49000 | 2283 | |
a6951a50 LP |
2284 | assert(s); |
2285 | ||
c79ab77c | 2286 | if (!pidref_is_set(&s->control_pid)) |
e9a4f676 | 2287 | return; |
4ad49000 | 2288 | |
c79ab77c | 2289 | r = pidref_kill_and_sigcont(&s->control_pid, SIGKILL); |
e9a4f676 LP |
2290 | if (r < 0) { |
2291 | _cleanup_free_ char *comm = NULL; | |
a6951a50 | 2292 | |
d7d74854 | 2293 | (void) pidref_get_comm(&s->control_pid, &comm); |
a6951a50 | 2294 | |
e9a4f676 | 2295 | log_unit_debug_errno(UNIT(s), r, "Failed to kill control process " PID_FMT " (%s), ignoring: %m", |
c79ab77c | 2296 | s->control_pid.pid, strna(comm)); |
a6951a50 | 2297 | } |
4ad49000 LP |
2298 | } |
2299 | ||
c53d2d54 DB |
2300 | static int service_adverse_to_leftover_processes(Service *s) { |
2301 | assert(s); | |
2302 | ||
2303 | /* KillMode=mixed and control group are used to indicate that all process should be killed off. | |
4c425434 LP |
2304 | * SendSIGKILL= is used for services that require a clean shutdown. These are typically database |
2305 | * service where a SigKilled process would result in a lengthy recovery and who's shutdown or startup | |
2306 | * time is quite variable (so Timeout settings aren't of use). | |
c53d2d54 DB |
2307 | * |
2308 | * Here we take these two factors and refuse to start a service if there are existing processes | |
2309 | * within a control group. Databases, while generally having some protection against multiple | |
4c425434 | 2310 | * instances running, lets not stress the rigor of these. Also ExecStartPre= parts of the service |
c53d2d54 | 2311 | * aren't as rigoriously written to protect aganst against multiple use. */ |
4c425434 LP |
2312 | |
2313 | if (unit_warn_leftover_processes(UNIT(s), unit_log_leftover_process_start) > 0 && | |
c53d2d54 | 2314 | IN_SET(s->kill_context.kill_mode, KILL_MIXED, KILL_CONTROL_GROUP) && |
569554d9 ZJS |
2315 | !s->kill_context.send_sigkill) |
2316 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(EBUSY), | |
2317 | "Will not start SendSIGKILL=no service of type KillMode=control-group or mixed while processes exist"); | |
2318 | ||
c53d2d54 DB |
2319 | return 0; |
2320 | } | |
2321 | ||
034c6ed7 | 2322 | static void service_enter_start(Service *s) { |
c79ab77c | 2323 | _cleanup_(pidref_done) PidRef pidref = PIDREF_NULL; |
4ad49000 | 2324 | ExecCommand *c; |
36c16a7c | 2325 | usec_t timeout; |
034c6ed7 LP |
2326 | int r; |
2327 | ||
2328 | assert(s); | |
2329 | ||
41efeaec LP |
2330 | service_unwatch_control_pid(s); |
2331 | service_unwatch_main_pid(s); | |
80876c20 | 2332 | |
c53d2d54 DB |
2333 | r = service_adverse_to_leftover_processes(s); |
2334 | if (r < 0) | |
2335 | goto fail; | |
a4634b21 | 2336 | |
867b3b7d LP |
2337 | if (s->type == SERVICE_FORKING) { |
2338 | s->control_command_id = SERVICE_EXEC_START; | |
2339 | c = s->control_command = s->exec_command[SERVICE_EXEC_START]; | |
2340 | ||
2341 | s->main_command = NULL; | |
2342 | } else { | |
2343 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
2344 | s->control_command = NULL; | |
2345 | ||
2346 | c = s->main_command = s->exec_command[SERVICE_EXEC_START]; | |
2347 | } | |
34e9ba66 | 2348 | |
96fb8242 | 2349 | if (!c) { |
47fffb35 | 2350 | if (s->type != SERVICE_ONESHOT) { |
cbc056c8 ZJS |
2351 | /* There's no command line configured for the main command? Hmm, that is strange. |
2352 | * This can only happen if the configuration changes at runtime. In this case, | |
2353 | * let's enter a failure state. */ | |
d85ff944 | 2354 | r = log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENXIO), "There's no 'start' task anymore we could start."); |
47fffb35 LP |
2355 | goto fail; |
2356 | } | |
2357 | ||
ef5ae8e7 ZJS |
2358 | /* We force a fake state transition here. Otherwise, the unit would go directly from |
2359 | * SERVICE_DEAD to SERVICE_DEAD without SERVICE_ACTIVATING or SERVICE_ACTIVE | |
5238e957 | 2360 | * in between. This way we can later trigger actions that depend on the state |
ef5ae8e7 ZJS |
2361 | * transition, including SuccessAction=. */ |
2362 | service_set_state(s, SERVICE_START); | |
2363 | ||
96fb8242 LP |
2364 | service_enter_start_post(s); |
2365 | return; | |
2366 | } | |
2367 | ||
36c16a7c LP |
2368 | if (IN_SET(s->type, SERVICE_SIMPLE, SERVICE_IDLE)) |
2369 | /* For simple + idle this is the main process. We don't apply any timeout here, but | |
2370 | * service_enter_running() will later apply the .runtime_max_usec timeout. */ | |
2371 | timeout = USEC_INFINITY; | |
2372 | else | |
2373 | timeout = s->timeout_start_usec; | |
2374 | ||
ecedd90f LP |
2375 | r = service_spawn(s, |
2376 | c, | |
36c16a7c | 2377 | timeout, |
cdebedb4 | 2378 | EXEC_PASS_FDS|EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_SET_WATCHDOG|EXEC_WRITE_CREDENTIALS|EXEC_SETENV_MONITOR_RESULT, |
c79ab77c | 2379 | &pidref); |
10691b9e LP |
2380 | if (r < 0) { |
2381 | log_unit_warning_errno(UNIT(s), r, "Failed to spawn 'start' task: %m"); | |
034c6ed7 | 2382 | goto fail; |
10691b9e | 2383 | } |
034c6ed7 | 2384 | |
36c16a7c | 2385 | if (IN_SET(s->type, SERVICE_SIMPLE, SERVICE_IDLE)) { |
034c6ed7 LP |
2386 | /* For simple services we immediately start |
2387 | * the START_POST binaries. */ | |
2388 | ||
b1f6901d | 2389 | (void) service_set_main_pidref(s, &pidref); |
034c6ed7 LP |
2390 | service_enter_start_post(s); |
2391 | ||
2392 | } else if (s->type == SERVICE_FORKING) { | |
2393 | ||
2394 | /* For forking services we wait until the start | |
2395 | * process exited. */ | |
2396 | ||
c79ab77c LP |
2397 | pidref_done(&s->control_pid); |
2398 | s->control_pid = TAKE_PIDREF(pidref); | |
80876c20 LP |
2399 | service_set_state(s, SERVICE_START); |
2400 | ||
3bd28bf7 | 2401 | } else if (IN_SET(s->type, SERVICE_ONESHOT, SERVICE_DBUS, SERVICE_NOTIFY, SERVICE_NOTIFY_RELOAD, SERVICE_EXEC)) { |
7d55e835 | 2402 | |
5686391b | 2403 | /* For oneshot services we wait until the start process exited, too, but it is our main process. */ |
7d55e835 | 2404 | |
5686391b LP |
2405 | /* For D-Bus services we know the main pid right away, but wait for the bus name to appear on the |
2406 | * bus. 'notify' and 'exec' services are similar. */ | |
05e343b7 | 2407 | |
b1f6901d | 2408 | (void) service_set_main_pidref(s, &pidref); |
80876c20 | 2409 | service_set_state(s, SERVICE_START); |
034c6ed7 | 2410 | } else |
04499a70 | 2411 | assert_not_reached(); |
034c6ed7 LP |
2412 | |
2413 | return; | |
2414 | ||
2415 | fail: | |
c3fda31d | 2416 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
2417 | } |
2418 | ||
2419 | static void service_enter_start_pre(Service *s) { | |
2420 | int r; | |
2421 | ||
2422 | assert(s); | |
2423 | ||
5e94833f LP |
2424 | service_unwatch_control_pid(s); |
2425 | ||
117dcc57 ZJS |
2426 | s->control_command = s->exec_command[SERVICE_EXEC_START_PRE]; |
2427 | if (s->control_command) { | |
8f53a7b8 | 2428 | |
c53d2d54 DB |
2429 | r = service_adverse_to_leftover_processes(s); |
2430 | if (r < 0) | |
2431 | goto fail; | |
a4634b21 | 2432 | |
867b3b7d LP |
2433 | s->control_command_id = SERVICE_EXEC_START_PRE; |
2434 | ||
ecedd90f LP |
2435 | r = service_spawn(s, |
2436 | s->control_command, | |
21b2ce39 | 2437 | s->timeout_start_usec, |
e7f64b89 | 2438 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_APPLY_TTY_STDIN|EXEC_SETENV_MONITOR_RESULT|EXEC_WRITE_CREDENTIALS, |
ecedd90f | 2439 | &s->control_pid); |
10691b9e LP |
2440 | if (r < 0) { |
2441 | log_unit_warning_errno(UNIT(s), r, "Failed to spawn 'start-pre' task: %m"); | |
034c6ed7 | 2442 | goto fail; |
10691b9e | 2443 | } |
034c6ed7 | 2444 | |
80876c20 LP |
2445 | service_set_state(s, SERVICE_START_PRE); |
2446 | } else | |
034c6ed7 LP |
2447 | service_enter_start(s); |
2448 | ||
2449 | return; | |
2450 | ||
2451 | fail: | |
10691b9e | 2452 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, /* allow_restart= */ true); |
034c6ed7 LP |
2453 | } |
2454 | ||
31cd5f63 AZ |
2455 | static void service_enter_condition(Service *s) { |
2456 | int r; | |
2457 | ||
2458 | assert(s); | |
2459 | ||
2460 | service_unwatch_control_pid(s); | |
2461 | ||
2462 | s->control_command = s->exec_command[SERVICE_EXEC_CONDITION]; | |
2463 | if (s->control_command) { | |
2464 | ||
2465 | r = service_adverse_to_leftover_processes(s); | |
2466 | if (r < 0) | |
2467 | goto fail; | |
2468 | ||
2469 | s->control_command_id = SERVICE_EXEC_CONDITION; | |
c79ab77c | 2470 | pidref_done(&s->control_pid); |
31cd5f63 AZ |
2471 | |
2472 | r = service_spawn(s, | |
2473 | s->control_command, | |
2474 | s->timeout_start_usec, | |
2475 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_APPLY_TTY_STDIN, | |
2476 | &s->control_pid); | |
2477 | ||
10691b9e LP |
2478 | if (r < 0) { |
2479 | log_unit_warning_errno(UNIT(s), r, "Failed to spawn 'exec-condition' task: %m"); | |
31cd5f63 | 2480 | goto fail; |
10691b9e | 2481 | } |
31cd5f63 AZ |
2482 | |
2483 | service_set_state(s, SERVICE_CONDITION); | |
2484 | } else | |
2485 | service_enter_start_pre(s); | |
2486 | ||
2487 | return; | |
2488 | ||
2489 | fail: | |
10691b9e | 2490 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, /* allow_restart= */ true); |
31cd5f63 AZ |
2491 | } |
2492 | ||
034c6ed7 | 2493 | static void service_enter_restart(Service *s) { |
4afd3348 | 2494 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
034c6ed7 | 2495 | int r; |
398ef8ba | 2496 | |
034c6ed7 LP |
2497 | assert(s); |
2498 | ||
28a2dfe8 | 2499 | if (unit_has_job_type(UNIT(s), JOB_STOP)) { |
a8bb2e65 | 2500 | /* Don't restart things if we are going down anyway */ |
c9728806 | 2501 | log_unit_info(UNIT(s), "Stop job pending for unit, skipping automatic restart."); |
feae8adb | 2502 | return; |
2edfa366 LP |
2503 | } |
2504 | ||
09d04ad3 LP |
2505 | /* Any units that are bound to this service must also be restarted. We use JOB_START for ourselves |
2506 | * but then set JOB_RESTART_DEPENDENCIES which will enqueue JOB_RESTART for those dependency jobs. */ | |
2507 | r = manager_add_job(UNIT(s)->manager, JOB_START, UNIT(s), JOB_RESTART_DEPENDENCIES, NULL, &error, NULL); | |
10691b9e LP |
2508 | if (r < 0) { |
2509 | log_unit_warning(UNIT(s), "Failed to schedule restart job: %s", bus_error_message(&error, r)); | |
2510 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, /* allow_restart= */ false); | |
2511 | return; | |
2512 | } | |
034c6ed7 | 2513 | |
0c59d2e4 LP |
2514 | /* Count the jobs we enqueue for restarting. This counter is maintained as long as the unit isn't |
2515 | * fully stopped, i.e. as long as it remains up or remains in auto-start states. The user can reset | |
2516 | * the counter explicitly however via the usual "systemctl reset-failure" logic. */ | |
b3a9d980 | 2517 | s->n_restarts++; |
7a0019d3 LP |
2518 | s->flush_n_restarts = false; |
2519 | ||
19dff691 MY |
2520 | s->notify_access_override = _NOTIFY_ACCESS_INVALID; |
2521 | ||
c2503e35 RH |
2522 | log_unit_struct(UNIT(s), LOG_INFO, |
2523 | "MESSAGE_ID=" SD_MESSAGE_UNIT_RESTART_SCHEDULED_STR, | |
2524 | LOG_UNIT_INVOCATION_ID(UNIT(s)), | |
92663a5e ZJS |
2525 | LOG_UNIT_MESSAGE(UNIT(s), |
2526 | "Scheduled restart job, restart counter is at %u.", s->n_restarts), | |
c2503e35 | 2527 | "N_RESTARTS=%u", s->n_restarts); |
7a0019d3 | 2528 | |
09d04ad3 LP |
2529 | service_set_state(s, SERVICE_AUTO_RESTART_QUEUED); |
2530 | ||
7a0019d3 LP |
2531 | /* Notify clients about changed restart counter */ |
2532 | unit_add_to_dbus_queue(UNIT(s)); | |
034c6ed7 LP |
2533 | } |
2534 | ||
308d72dc | 2535 | static void service_enter_reload_by_notify(Service *s) { |
15d167f8 JW |
2536 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
2537 | int r; | |
2538 | ||
308d72dc LP |
2539 | assert(s); |
2540 | ||
3dde96d8 LP |
2541 | r = service_arm_timer(s, /* relative= */ true, s->timeout_start_usec); |
2542 | if (r < 0) { | |
2543 | log_unit_warning_errno(UNIT(s), r, "Failed to install timer: %m"); | |
2544 | s->reload_result = SERVICE_FAILURE_RESOURCES; | |
2545 | service_enter_running(s, SERVICE_SUCCESS); | |
2546 | return; | |
2547 | } | |
2548 | ||
3bd28bf7 | 2549 | service_set_state(s, SERVICE_RELOAD_NOTIFY); |
15d167f8 JW |
2550 | |
2551 | /* service_enter_reload_by_notify is never called during a reload, thus no loops are possible. */ | |
2552 | r = manager_propagate_reload(UNIT(s)->manager, UNIT(s), JOB_FAIL, &error); | |
2553 | if (r < 0) | |
3dde96d8 | 2554 | log_unit_warning(UNIT(s), "Failed to schedule propagation of reload, ignoring: %s", bus_error_message(&error, r)); |
308d72dc LP |
2555 | } |
2556 | ||
034c6ed7 | 2557 | static void service_enter_reload(Service *s) { |
3bd28bf7 | 2558 | bool killed = false; |
034c6ed7 LP |
2559 | int r; |
2560 | ||
2561 | assert(s); | |
2562 | ||
5e94833f | 2563 | service_unwatch_control_pid(s); |
95c906ae | 2564 | s->reload_result = SERVICE_SUCCESS; |
5e94833f | 2565 | |
3bd28bf7 LP |
2566 | usec_t ts = now(CLOCK_MONOTONIC); |
2567 | ||
c79ab77c LP |
2568 | if (s->type == SERVICE_NOTIFY_RELOAD && pidref_is_set(&s->main_pid)) { |
2569 | r = pidref_kill_and_sigcont(&s->main_pid, s->reload_signal); | |
3bd28bf7 LP |
2570 | if (r < 0) { |
2571 | log_unit_warning_errno(UNIT(s), r, "Failed to send reload signal: %m"); | |
2572 | goto fail; | |
2573 | } | |
2574 | ||
2575 | killed = true; | |
2576 | } | |
2577 | ||
117dcc57 ZJS |
2578 | s->control_command = s->exec_command[SERVICE_EXEC_RELOAD]; |
2579 | if (s->control_command) { | |
867b3b7d | 2580 | s->control_command_id = SERVICE_EXEC_RELOAD; |
c79ab77c | 2581 | pidref_done(&s->control_pid); |
867b3b7d | 2582 | |
ecedd90f LP |
2583 | r = service_spawn(s, |
2584 | s->control_command, | |
21b2ce39 | 2585 | s->timeout_start_usec, |
f8a8f613 | 2586 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_CONTROL_CGROUP, |
ecedd90f | 2587 | &s->control_pid); |
3bd28bf7 | 2588 | if (r < 0) { |
10691b9e | 2589 | log_unit_warning_errno(UNIT(s), r, "Failed to spawn 'reload' task: %m"); |
034c6ed7 | 2590 | goto fail; |
3bd28bf7 | 2591 | } |
034c6ed7 | 2592 | |
80876c20 | 2593 | service_set_state(s, SERVICE_RELOAD); |
3bd28bf7 | 2594 | } else if (killed) { |
3dde96d8 LP |
2595 | r = service_arm_timer(s, /* relative= */ true, s->timeout_start_usec); |
2596 | if (r < 0) { | |
2597 | log_unit_warning_errno(UNIT(s), r, "Failed to install timer: %m"); | |
2598 | goto fail; | |
2599 | } | |
2600 | ||
3bd28bf7 LP |
2601 | service_set_state(s, SERVICE_RELOAD_SIGNAL); |
2602 | } else { | |
f42806df | 2603 | service_enter_running(s, SERVICE_SUCCESS); |
3bd28bf7 LP |
2604 | return; |
2605 | } | |
034c6ed7 | 2606 | |
3bd28bf7 LP |
2607 | /* Store the timestamp when we started reloading: when reloading via SIGHUP we won't leave the reload |
2608 | * state until we received both RELOADING=1 and READY=1 with MONOTONIC_USEC= set to a value above | |
2609 | * this. Thus we know for sure the reload cycle was executed *after* we requested it, and is not one | |
2610 | * that was already in progress before. */ | |
2611 | s->reload_begin_usec = ts; | |
034c6ed7 LP |
2612 | return; |
2613 | ||
2614 | fail: | |
f42806df LP |
2615 | s->reload_result = SERVICE_FAILURE_RESOURCES; |
2616 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
2617 | } |
2618 | ||
f42806df | 2619 | static void service_run_next_control(Service *s) { |
36c16a7c | 2620 | usec_t timeout; |
034c6ed7 LP |
2621 | int r; |
2622 | ||
2623 | assert(s); | |
2624 | assert(s->control_command); | |
2625 | assert(s->control_command->command_next); | |
2626 | ||
34e9ba66 | 2627 | assert(s->control_command_id != SERVICE_EXEC_START); |
034c6ed7 | 2628 | |
34e9ba66 | 2629 | s->control_command = s->control_command->command_next; |
5e94833f LP |
2630 | service_unwatch_control_pid(s); |
2631 | ||
31cd5f63 | 2632 | if (IN_SET(s->state, SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
36c16a7c LP |
2633 | timeout = s->timeout_start_usec; |
2634 | else | |
2635 | timeout = s->timeout_stop_usec; | |
2636 | ||
c79ab77c LP |
2637 | pidref_done(&s->control_pid); |
2638 | ||
ecedd90f LP |
2639 | r = service_spawn(s, |
2640 | s->control_command, | |
36c16a7c | 2641 | timeout, |
1703fa41 | 2642 | EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL| |
c9210b74 | 2643 | (IN_SET(s->state, SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD) ? EXEC_WRITE_CREDENTIALS : 0)| |
31cd5f63 | 2644 | (IN_SET(s->control_command_id, SERVICE_EXEC_CONDITION, SERVICE_EXEC_START_PRE, SERVICE_EXEC_STOP_POST) ? EXEC_APPLY_TTY_STDIN : 0)| |
78f93209 | 2645 | (IN_SET(s->control_command_id, SERVICE_EXEC_STOP, SERVICE_EXEC_STOP_POST) ? EXEC_SETENV_RESULT : 0)| |
a257c941 | 2646 | (IN_SET(s->control_command_id, SERVICE_EXEC_START_PRE, SERVICE_EXEC_START) ? EXEC_SETENV_MONITOR_RESULT : 0)| |
78f93209 | 2647 | (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 | 2648 | &s->control_pid); |
10691b9e LP |
2649 | if (r < 0) { |
2650 | log_unit_warning_errno(UNIT(s), r, "Failed to spawn next control task: %m"); | |
2651 | ||
2652 | if (IN_SET(s->state, SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START_POST, SERVICE_STOP)) | |
2653 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); | |
2654 | else if (s->state == SERVICE_STOP_POST) | |
2655 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, /* allow_restart= */ true); | |
2656 | else if (s->state == SERVICE_RELOAD) { | |
2657 | s->reload_result = SERVICE_FAILURE_RESOURCES; | |
2658 | service_enter_running(s, SERVICE_SUCCESS); | |
2659 | } else | |
2660 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); | |
2661 | } | |
5cb5a6ff LP |
2662 | } |
2663 | ||
f42806df | 2664 | static void service_run_next_main(Service *s) { |
c79ab77c | 2665 | _cleanup_(pidref_done) PidRef pidref = PIDREF_NULL; |
34e9ba66 LP |
2666 | int r; |
2667 | ||
2668 | assert(s); | |
867b3b7d LP |
2669 | assert(s->main_command); |
2670 | assert(s->main_command->command_next); | |
2671 | assert(s->type == SERVICE_ONESHOT); | |
34e9ba66 | 2672 | |
867b3b7d | 2673 | s->main_command = s->main_command->command_next; |
34e9ba66 LP |
2674 | service_unwatch_main_pid(s); |
2675 | ||
ecedd90f LP |
2676 | r = service_spawn(s, |
2677 | s->main_command, | |
21b2ce39 | 2678 | s->timeout_start_usec, |
c9210b74 | 2679 | EXEC_PASS_FDS|EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN|EXEC_SET_WATCHDOG|EXEC_SETENV_MONITOR_RESULT|EXEC_WRITE_CREDENTIALS, |
c79ab77c | 2680 | &pidref); |
10691b9e LP |
2681 | if (r < 0) { |
2682 | log_unit_warning_errno(UNIT(s), r, "Failed to spawn next main task: %m"); | |
2683 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); | |
2684 | return; | |
2685 | } | |
34e9ba66 | 2686 | |
b1f6901d | 2687 | (void) service_set_main_pidref(s, &pidref); |
34e9ba66 LP |
2688 | } |
2689 | ||
87f0e418 LP |
2690 | static int service_start(Unit *u) { |
2691 | Service *s = SERVICE(u); | |
07299350 | 2692 | int r; |
5cb5a6ff LP |
2693 | |
2694 | assert(s); | |
2695 | ||
034c6ed7 LP |
2696 | /* We cannot fulfill this request right now, try again later |
2697 | * please! */ | |
a00973af | 2698 | if (IN_SET(s->state, |
c87700a1 | 2699 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 2700 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL, SERVICE_CLEANING)) |
5cb5a6ff LP |
2701 | return -EAGAIN; |
2702 | ||
034c6ed7 | 2703 | /* Already on it! */ |
31cd5f63 | 2704 | if (IN_SET(s->state, SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST)) |
034c6ed7 LP |
2705 | return 0; |
2706 | ||
a1d31573 LP |
2707 | /* A service that will be restarted must be stopped first to trigger BindsTo and/or OnFailure |
2708 | * dependencies. If a user does not want to wait for the holdoff time to elapse, the service should | |
2709 | * be manually restarted, not started. We simply return EAGAIN here, so that any start jobs stay | |
2710 | * queued, and assume that the auto restart timer will eventually trigger the restart. */ | |
2711 | if (IN_SET(s->state, SERVICE_AUTO_RESTART, SERVICE_DEAD_BEFORE_AUTO_RESTART, SERVICE_FAILED_BEFORE_AUTO_RESTART)) | |
a8bb2e65 | 2712 | return -EAGAIN; |
2e9d6c12 | 2713 | |
09d04ad3 | 2714 | assert(IN_SET(s->state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_DEAD_RESOURCES_PINNED, SERVICE_AUTO_RESTART_QUEUED)); |
5cb5a6ff | 2715 | |
4b58153d LP |
2716 | r = unit_acquire_invocation_id(u); |
2717 | if (r < 0) | |
2718 | return r; | |
2719 | ||
f42806df LP |
2720 | s->result = SERVICE_SUCCESS; |
2721 | s->reload_result = SERVICE_SUCCESS; | |
034c6ed7 | 2722 | s->main_pid_known = false; |
6dfa5494 | 2723 | s->main_pid_alien = false; |
47342320 | 2724 | s->forbid_restart = false; |
3c7416b6 | 2725 | |
a1e58e8e | 2726 | s->status_text = mfree(s->status_text); |
8cfdb077 LP |
2727 | s->status_errno = 0; |
2728 | ||
19dff691 | 2729 | s->notify_access_override = _NOTIFY_ACCESS_INVALID; |
308d72dc LP |
2730 | s->notify_state = NOTIFY_UNKNOWN; |
2731 | ||
aa8c4bbf | 2732 | s->watchdog_original_usec = s->watchdog_usec; |
2787d83c | 2733 | s->watchdog_override_enable = false; |
aa8c4bbf | 2734 | s->watchdog_override_usec = USEC_INFINITY; |
2787d83c | 2735 | |
6a1d4d9f LP |
2736 | exec_command_reset_status_list_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); |
2737 | exec_status_reset(&s->main_exec_status); | |
2738 | ||
7a0019d3 LP |
2739 | /* This is not an automatic restart? Flush the restart counter then */ |
2740 | if (s->flush_n_restarts) { | |
2741 | s->n_restarts = 0; | |
2742 | s->flush_n_restarts = false; | |
2743 | } | |
2744 | ||
6a1d4d9f LP |
2745 | u->reset_accounting = true; |
2746 | ||
31cd5f63 | 2747 | service_enter_condition(s); |
82a2b6bb | 2748 | return 1; |
5cb5a6ff LP |
2749 | } |
2750 | ||
87f0e418 LP |
2751 | static int service_stop(Unit *u) { |
2752 | Service *s = SERVICE(u); | |
5cb5a6ff LP |
2753 | |
2754 | assert(s); | |
2755 | ||
a509f0e6 | 2756 | /* Don't create restart jobs from manual stops. */ |
47342320 | 2757 | s->forbid_restart = true; |
034c6ed7 | 2758 | |
a1d31573 LP |
2759 | switch (s->state) { |
2760 | ||
2761 | case SERVICE_STOP: | |
2762 | case SERVICE_STOP_SIGTERM: | |
2763 | case SERVICE_STOP_SIGKILL: | |
2764 | case SERVICE_STOP_POST: | |
2765 | case SERVICE_FINAL_WATCHDOG: | |
2766 | case SERVICE_FINAL_SIGTERM: | |
2767 | case SERVICE_FINAL_SIGKILL: | |
2768 | /* Already on it */ | |
e537352b LP |
2769 | return 0; |
2770 | ||
a1d31573 | 2771 | case SERVICE_AUTO_RESTART: |
09d04ad3 LP |
2772 | case SERVICE_AUTO_RESTART_QUEUED: |
2773 | /* Give up on the auto restart */ | |
b9c1883a | 2774 | service_set_state(s, service_determine_dead_state(s)); |
034c6ed7 | 2775 | return 0; |
034c6ed7 | 2776 | |
a1d31573 LP |
2777 | case SERVICE_CONDITION: |
2778 | case SERVICE_START_PRE: | |
2779 | case SERVICE_START: | |
2780 | case SERVICE_START_POST: | |
2781 | case SERVICE_RELOAD: | |
2782 | case SERVICE_RELOAD_SIGNAL: | |
2783 | case SERVICE_RELOAD_NOTIFY: | |
2784 | case SERVICE_STOP_WATCHDOG: | |
2785 | /* If there's already something running we go directly into kill mode. */ | |
f42806df | 2786 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
3f6c78dc | 2787 | return 0; |
5cb5a6ff | 2788 | |
a1d31573 LP |
2789 | case SERVICE_CLEANING: |
2790 | /* If we are currently cleaning, then abort it, brutally. */ | |
4c2f5842 LP |
2791 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_SUCCESS); |
2792 | return 0; | |
a1d31573 LP |
2793 | |
2794 | case SERVICE_RUNNING: | |
2795 | case SERVICE_EXITED: | |
2796 | service_enter_stop(s, SERVICE_SUCCESS); | |
2797 | return 1; | |
2798 | ||
2799 | case SERVICE_DEAD_BEFORE_AUTO_RESTART: | |
2800 | case SERVICE_FAILED_BEFORE_AUTO_RESTART: | |
2801 | case SERVICE_DEAD: | |
2802 | case SERVICE_FAILED: | |
b9c1883a | 2803 | case SERVICE_DEAD_RESOURCES_PINNED: |
a1d31573 LP |
2804 | default: |
2805 | /* Unknown state, or unit_stop() should already have handled these */ | |
2806 | assert_not_reached(); | |
4c2f5842 | 2807 | } |
5cb5a6ff LP |
2808 | } |
2809 | ||
87f0e418 LP |
2810 | static int service_reload(Unit *u) { |
2811 | Service *s = SERVICE(u); | |
034c6ed7 LP |
2812 | |
2813 | assert(s); | |
2814 | ||
3742095b | 2815 | assert(IN_SET(s->state, SERVICE_RUNNING, SERVICE_EXITED)); |
034c6ed7 LP |
2816 | |
2817 | service_enter_reload(s); | |
2d018ae2 | 2818 | return 1; |
5cb5a6ff LP |
2819 | } |
2820 | ||
d1e8e8b5 | 2821 | static bool service_can_reload(Unit *u) { |
87f0e418 | 2822 | Service *s = SERVICE(u); |
034c6ed7 LP |
2823 | |
2824 | assert(s); | |
2825 | ||
3bd28bf7 LP |
2826 | return s->exec_command[SERVICE_EXEC_RELOAD] || |
2827 | s->type == SERVICE_NOTIFY_RELOAD; | |
034c6ed7 LP |
2828 | } |
2829 | ||
502096b5 | 2830 | static unsigned service_exec_command_index(Unit *u, ServiceExecCommand id, const ExecCommand *current) { |
e266c068 MS |
2831 | Service *s = SERVICE(u); |
2832 | unsigned idx = 0; | |
e266c068 MS |
2833 | |
2834 | assert(s); | |
5b99bd5f LP |
2835 | assert(id >= 0); |
2836 | assert(id < _SERVICE_EXEC_COMMAND_MAX); | |
e266c068 | 2837 | |
502096b5 | 2838 | const ExecCommand *first = s->exec_command[id]; |
e266c068 MS |
2839 | |
2840 | /* Figure out where we are in the list by walking back to the beginning */ | |
502096b5 | 2841 | for (const ExecCommand *c = current; c != first; c = c->command_prev) |
e266c068 MS |
2842 | idx++; |
2843 | ||
2844 | return idx; | |
2845 | } | |
2846 | ||
502096b5 | 2847 | static int service_serialize_exec_command(Unit *u, FILE *f, const ExecCommand *command) { |
d68c645b | 2848 | _cleanup_free_ char *args = NULL, *p = NULL; |
e266c068 | 2849 | Service *s = SERVICE(u); |
d68c645b | 2850 | const char *type, *key; |
e266c068 | 2851 | ServiceExecCommand id; |
319a4f4b | 2852 | size_t length = 0; |
e266c068 | 2853 | unsigned idx; |
e266c068 MS |
2854 | |
2855 | assert(s); | |
2856 | assert(f); | |
2857 | ||
2858 | if (!command) | |
2859 | return 0; | |
2860 | ||
2861 | if (command == s->control_command) { | |
2862 | type = "control"; | |
2863 | id = s->control_command_id; | |
2864 | } else { | |
2865 | type = "main"; | |
2866 | id = SERVICE_EXEC_START; | |
2867 | } | |
2868 | ||
2869 | idx = service_exec_command_index(u, id, command); | |
2870 | ||
2871 | STRV_FOREACH(arg, command->argv) { | |
e266c068 | 2872 | _cleanup_free_ char *e = NULL; |
d68c645b | 2873 | size_t n; |
e266c068 | 2874 | |
d68c645b | 2875 | e = cescape(*arg); |
e266c068 | 2876 | if (!e) |
d68c645b | 2877 | return log_oom(); |
e266c068 MS |
2878 | |
2879 | n = strlen(e); | |
319a4f4b | 2880 | if (!GREEDY_REALLOC(args, length + 2 + n + 2)) |
d68c645b | 2881 | return log_oom(); |
e266c068 MS |
2882 | |
2883 | if (length > 0) | |
2884 | args[length++] = ' '; | |
2885 | ||
334c0979 | 2886 | args[length++] = '"'; |
e266c068 MS |
2887 | memcpy(args + length, e, n); |
2888 | length += n; | |
334c0979 | 2889 | args[length++] = '"'; |
e266c068 MS |
2890 | } |
2891 | ||
319a4f4b | 2892 | if (!GREEDY_REALLOC(args, length + 1)) |
d68c645b LP |
2893 | return log_oom(); |
2894 | ||
e266c068 MS |
2895 | args[length++] = 0; |
2896 | ||
d68c645b | 2897 | p = cescape(command->path); |
e266c068 | 2898 | if (!p) |
5b99bd5f | 2899 | return log_oom(); |
e266c068 | 2900 | |
d68c645b | 2901 | key = strjoina(type, "-command"); |
a99bd455 ZJS |
2902 | |
2903 | /* We use '+1234' instead of '1234' to mark the last command in a sequence. | |
2904 | * This is used in service_deserialize_exec_command(). */ | |
2905 | (void) serialize_item_format( | |
2906 | f, key, | |
2907 | "%s %s%u %s %s", | |
2908 | service_exec_command_to_string(id), | |
2909 | command->command_next ? "" : "+", | |
2910 | idx, | |
2911 | p, args); | |
5b99bd5f LP |
2912 | |
2913 | return 0; | |
e266c068 MS |
2914 | } |
2915 | ||
a16e1123 LP |
2916 | static int service_serialize(Unit *u, FILE *f, FDSet *fds) { |
2917 | Service *s = SERVICE(u); | |
a34ceba6 | 2918 | int r; |
a16e1123 LP |
2919 | |
2920 | assert(u); | |
2921 | assert(f); | |
2922 | assert(fds); | |
2923 | ||
d68c645b LP |
2924 | (void) serialize_item(f, "state", service_state_to_string(s->state)); |
2925 | (void) serialize_item(f, "result", service_result_to_string(s->result)); | |
2926 | (void) serialize_item(f, "reload-result", service_result_to_string(s->reload_result)); | |
a16e1123 | 2927 | |
2a7451dc LP |
2928 | (void) serialize_pidref(f, fds, "control-pid", &s->control_pid); |
2929 | if (s->main_pid_known) | |
2930 | (void) serialize_pidref(f, fds, "main-pid", &s->main_pid); | |
a16e1123 | 2931 | |
d68c645b LP |
2932 | (void) serialize_bool(f, "main-pid-known", s->main_pid_known); |
2933 | (void) serialize_bool(f, "bus-name-good", s->bus_name_good); | |
2934 | (void) serialize_bool(f, "bus-name-owner", s->bus_name_owner); | |
a16e1123 | 2935 | |
d68c645b LP |
2936 | (void) serialize_item_format(f, "n-restarts", "%u", s->n_restarts); |
2937 | (void) serialize_bool(f, "flush-n-restarts", s->flush_n_restarts); | |
7a0019d3 | 2938 | |
d68c645b | 2939 | r = serialize_item_escaped(f, "status-text", s->status_text); |
a34ceba6 LP |
2940 | if (r < 0) |
2941 | return r; | |
3a2776bc | 2942 | |
e266c068 MS |
2943 | service_serialize_exec_command(u, f, s->control_command); |
2944 | service_serialize_exec_command(u, f, s->main_command); | |
a16e1123 | 2945 | |
d68c645b | 2946 | r = serialize_fd(f, fds, "stdin-fd", s->stdin_fd); |
a34ceba6 LP |
2947 | if (r < 0) |
2948 | return r; | |
d68c645b | 2949 | r = serialize_fd(f, fds, "stdout-fd", s->stdout_fd); |
a34ceba6 LP |
2950 | if (r < 0) |
2951 | return r; | |
d68c645b | 2952 | r = serialize_fd(f, fds, "stderr-fd", s->stderr_fd); |
a34ceba6 LP |
2953 | if (r < 0) |
2954 | return r; | |
e44da745 | 2955 | |
5686391b | 2956 | if (s->exec_fd_event_source) { |
d68c645b | 2957 | r = serialize_fd(f, fds, "exec-fd", sd_event_source_get_io_fd(s->exec_fd_event_source)); |
5686391b LP |
2958 | if (r < 0) |
2959 | return r; | |
d68c645b LP |
2960 | |
2961 | (void) serialize_bool(f, "exec-fd-hot", s->exec_fd_hot); | |
5686391b LP |
2962 | } |
2963 | ||
9dfb64f8 | 2964 | if (UNIT_ISSET(s->accept_socket)) { |
d68c645b | 2965 | r = serialize_item(f, "accept-socket", UNIT_DEREF(s->accept_socket)->id); |
9dfb64f8 ZJS |
2966 | if (r < 0) |
2967 | return r; | |
2968 | } | |
2969 | ||
d68c645b | 2970 | r = serialize_fd(f, fds, "socket-fd", s->socket_fd); |
a34ceba6 LP |
2971 | if (r < 0) |
2972 | return r; | |
e44da745 | 2973 | |
2339fc93 | 2974 | LIST_FOREACH(fd_store, fs, s->fd_store) { |
8dd4c05b | 2975 | _cleanup_free_ char *c = NULL; |
2339fc93 LP |
2976 | int copy; |
2977 | ||
2978 | copy = fdset_put_dup(fds, fs->fd); | |
2979 | if (copy < 0) | |
d68c645b | 2980 | return log_error_errno(copy, "Failed to copy file descriptor for serialization: %m"); |
2339fc93 | 2981 | |
8dd4c05b | 2982 | c = cescape(fs->fdname); |
d68c645b LP |
2983 | if (!c) |
2984 | return log_oom(); | |
8dd4c05b | 2985 | |
30520492 | 2986 | (void) serialize_item_format(f, "fd-store-fd", "%i \"%s\" %i", copy, c, fs->do_poll); |
2339fc93 LP |
2987 | } |
2988 | ||
ecdbca40 | 2989 | if (s->main_exec_status.pid > 0) { |
d68c645b LP |
2990 | (void) serialize_item_format(f, "main-exec-status-pid", PID_FMT, s->main_exec_status.pid); |
2991 | (void) serialize_dual_timestamp(f, "main-exec-status-start", &s->main_exec_status.start_timestamp); | |
2992 | (void) serialize_dual_timestamp(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp); | |
ecdbca40 | 2993 | |
799fd0fd | 2994 | if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) { |
d68c645b LP |
2995 | (void) serialize_item_format(f, "main-exec-status-code", "%i", s->main_exec_status.code); |
2996 | (void) serialize_item_format(f, "main-exec-status-status", "%i", s->main_exec_status.status); | |
ecdbca40 LP |
2997 | } |
2998 | } | |
f06db334 | 2999 | |
19dff691 MY |
3000 | if (s->notify_access_override >= 0) |
3001 | (void) serialize_item(f, "notify-access-override", notify_access_to_string(s->notify_access_override)); | |
3002 | ||
d68c645b LP |
3003 | (void) serialize_dual_timestamp(f, "watchdog-timestamp", &s->watchdog_timestamp); |
3004 | (void) serialize_bool(f, "forbid-restart", s->forbid_restart); | |
6aca9a58 | 3005 | |
2787d83c | 3006 | if (s->watchdog_override_enable) |
d68c645b | 3007 | (void) serialize_item_format(f, "watchdog-override-usec", USEC_FMT, s->watchdog_override_usec); |
2787d83c | 3008 | |
aa8c4bbf LP |
3009 | if (s->watchdog_original_usec != USEC_INFINITY) |
3010 | (void) serialize_item_format(f, "watchdog-original-usec", USEC_FMT, s->watchdog_original_usec); | |
3011 | ||
3bd28bf7 LP |
3012 | if (s->reload_begin_usec != USEC_INFINITY) |
3013 | (void) serialize_item_format(f, "reload-begin-usec", USEC_FMT, s->reload_begin_usec); | |
3014 | ||
a16e1123 LP |
3015 | return 0; |
3016 | } | |
3017 | ||
35243b77 | 3018 | int service_deserialize_exec_command( |
5b99bd5f LP |
3019 | Unit *u, |
3020 | const char *key, | |
3021 | const char *value) { | |
3022 | ||
e266c068 MS |
3023 | Service *s = SERVICE(u); |
3024 | int r; | |
3025 | unsigned idx = 0, i; | |
a99bd455 | 3026 | bool control, found = false, last = false; |
e266c068 MS |
3027 | ServiceExecCommand id = _SERVICE_EXEC_COMMAND_INVALID; |
3028 | ExecCommand *command = NULL; | |
6eeec374 | 3029 | _cleanup_free_ char *path = NULL; |
e266c068 MS |
3030 | _cleanup_strv_free_ char **argv = NULL; |
3031 | ||
3032 | enum ExecCommandState { | |
3033 | STATE_EXEC_COMMAND_TYPE, | |
3034 | STATE_EXEC_COMMAND_INDEX, | |
3035 | STATE_EXEC_COMMAND_PATH, | |
3036 | STATE_EXEC_COMMAND_ARGS, | |
3037 | _STATE_EXEC_COMMAND_MAX, | |
2d93c20e | 3038 | _STATE_EXEC_COMMAND_INVALID = -EINVAL, |
e266c068 MS |
3039 | } state; |
3040 | ||
3041 | assert(s); | |
3042 | assert(key); | |
3043 | assert(value); | |
3044 | ||
3045 | control = streq(key, "control-command"); | |
3046 | ||
3047 | state = STATE_EXEC_COMMAND_TYPE; | |
3048 | ||
3049 | for (;;) { | |
3050 | _cleanup_free_ char *arg = NULL; | |
3051 | ||
334c0979 | 3052 | r = extract_first_word(&value, &arg, NULL, EXTRACT_CUNESCAPE | EXTRACT_UNQUOTE); |
efa3f34e LP |
3053 | if (r < 0) |
3054 | return r; | |
e266c068 MS |
3055 | if (r == 0) |
3056 | break; | |
e266c068 MS |
3057 | |
3058 | switch (state) { | |
3059 | case STATE_EXEC_COMMAND_TYPE: | |
3060 | id = service_exec_command_from_string(arg); | |
3061 | if (id < 0) | |
7211c853 | 3062 | return id; |
e266c068 MS |
3063 | |
3064 | state = STATE_EXEC_COMMAND_INDEX; | |
3065 | break; | |
3066 | case STATE_EXEC_COMMAND_INDEX: | |
a99bd455 ZJS |
3067 | /* PID 1234 is serialized as either '1234' or '+1234'. The second form is used to |
3068 | * mark the last command in a sequence. We warn if the deserialized command doesn't | |
3069 | * match what we have loaded from the unit, but we don't need to warn if that is the | |
3070 | * last command. */ | |
3071 | ||
e266c068 MS |
3072 | r = safe_atou(arg, &idx); |
3073 | if (r < 0) | |
7211c853 | 3074 | return r; |
a99bd455 | 3075 | last = arg[0] == '+'; |
e266c068 MS |
3076 | |
3077 | state = STATE_EXEC_COMMAND_PATH; | |
3078 | break; | |
3079 | case STATE_EXEC_COMMAND_PATH: | |
ae2a15bc | 3080 | path = TAKE_PTR(arg); |
e266c068 | 3081 | state = STATE_EXEC_COMMAND_ARGS; |
e266c068 MS |
3082 | break; |
3083 | case STATE_EXEC_COMMAND_ARGS: | |
3084 | r = strv_extend(&argv, arg); | |
3085 | if (r < 0) | |
010cd1dc | 3086 | return r; |
e266c068 MS |
3087 | break; |
3088 | default: | |
04499a70 | 3089 | assert_not_reached(); |
e266c068 MS |
3090 | } |
3091 | } | |
3092 | ||
3093 | if (state != STATE_EXEC_COMMAND_ARGS) | |
3094 | return -EINVAL; | |
90204792 ZJS |
3095 | if (strv_isempty(argv)) |
3096 | return -EINVAL; /* At least argv[0] must be always present. */ | |
e266c068 MS |
3097 | |
3098 | /* Let's check whether exec command on given offset matches data that we just deserialized */ | |
3099 | for (command = s->exec_command[id], i = 0; command; command = command->command_next, i++) { | |
3100 | if (i != idx) | |
3101 | continue; | |
3102 | ||
3103 | found = strv_equal(argv, command->argv) && streq(command->path, path); | |
3104 | break; | |
3105 | } | |
3106 | ||
3107 | if (!found) { | |
3108 | /* Command at the index we serialized is different, let's look for command that exactly | |
3109 | * matches but is on different index. If there is no such command we will not resume execution. */ | |
3110 | for (command = s->exec_command[id]; command; command = command->command_next) | |
3111 | if (strv_equal(command->argv, argv) && streq(command->path, path)) | |
3112 | break; | |
3113 | } | |
3114 | ||
e9da62b1 | 3115 | if (command && control) { |
e266c068 | 3116 | s->control_command = command; |
e9da62b1 LP |
3117 | s->control_command_id = id; |
3118 | } else if (command) | |
e266c068 | 3119 | s->main_command = command; |
a99bd455 ZJS |
3120 | else if (last) |
3121 | log_unit_debug(u, "Current command vanished from the unit file."); | |
e266c068 MS |
3122 | else |
3123 | log_unit_warning(u, "Current command vanished from the unit file, execution of the command list won't be resumed."); | |
3124 | ||
3125 | return 0; | |
3126 | } | |
3127 | ||
a16e1123 LP |
3128 | static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { |
3129 | Service *s = SERVICE(u); | |
2339fc93 | 3130 | int r; |
a16e1123 LP |
3131 | |
3132 | assert(u); | |
3133 | assert(key); | |
3134 | assert(value); | |
3135 | assert(fds); | |
3136 | ||
3137 | if (streq(key, "state")) { | |
3138 | ServiceState state; | |
3139 | ||
117dcc57 ZJS |
3140 | state = service_state_from_string(value); |
3141 | if (state < 0) | |
f2341e0a | 3142 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
3143 | else |
3144 | s->deserialized_state = state; | |
f42806df LP |
3145 | } else if (streq(key, "result")) { |
3146 | ServiceResult f; | |
3147 | ||
3148 | f = service_result_from_string(value); | |
3149 | if (f < 0) | |
f2341e0a | 3150 | log_unit_debug(u, "Failed to parse result value: %s", value); |
f42806df LP |
3151 | else if (f != SERVICE_SUCCESS) |
3152 | s->result = f; | |
3153 | ||
3154 | } else if (streq(key, "reload-result")) { | |
3155 | ServiceResult f; | |
3156 | ||
3157 | f = service_result_from_string(value); | |
3158 | if (f < 0) | |
f2341e0a | 3159 | log_unit_debug(u, "Failed to parse reload result value: %s", value); |
f42806df LP |
3160 | else if (f != SERVICE_SUCCESS) |
3161 | s->reload_result = f; | |
a16e1123 | 3162 | |
a16e1123 | 3163 | } else if (streq(key, "control-pid")) { |
c79ab77c | 3164 | pidref_done(&s->control_pid); |
2a7451dc LP |
3165 | |
3166 | (void) deserialize_pidref(fds, value, &s->control_pid); | |
3167 | ||
a16e1123 | 3168 | } else if (streq(key, "main-pid")) { |
2a7451dc LP |
3169 | _cleanup_(pidref_done) PidRef pidref = PIDREF_NULL; |
3170 | ||
3171 | if (deserialize_pidref(fds, value, &pidref) >= 0) | |
3172 | (void) service_set_main_pidref(s, &pidref); | |
a16e1123 | 3173 | |
a16e1123 LP |
3174 | } else if (streq(key, "main-pid-known")) { |
3175 | int b; | |
3176 | ||
117dcc57 ZJS |
3177 | b = parse_boolean(value); |
3178 | if (b < 0) | |
f2341e0a | 3179 | log_unit_debug(u, "Failed to parse main-pid-known value: %s", value); |
a16e1123 LP |
3180 | else |
3181 | s->main_pid_known = b; | |
de1d4f9b WF |
3182 | } else if (streq(key, "bus-name-good")) { |
3183 | int b; | |
3184 | ||
3185 | b = parse_boolean(value); | |
3186 | if (b < 0) | |
3187 | log_unit_debug(u, "Failed to parse bus-name-good value: %s", value); | |
3188 | else | |
3189 | s->bus_name_good = b; | |
d8ccf5fd DM |
3190 | } else if (streq(key, "bus-name-owner")) { |
3191 | r = free_and_strdup(&s->bus_name_owner, value); | |
3192 | if (r < 0) | |
3193 | log_unit_error_errno(u, r, "Unable to deserialize current bus owner %s: %m", value); | |
3a2776bc LP |
3194 | } else if (streq(key, "status-text")) { |
3195 | char *t; | |
e437538f | 3196 | ssize_t l; |
3a2776bc | 3197 | |
e437538f ZJS |
3198 | l = cunescape(value, 0, &t); |
3199 | if (l < 0) | |
3200 | log_unit_debug_errno(u, l, "Failed to unescape status text '%s': %m", value); | |
efa3f34e LP |
3201 | else |
3202 | free_and_replace(s->status_text, t); | |
3a2776bc | 3203 | |
9dfb64f8 ZJS |
3204 | } else if (streq(key, "accept-socket")) { |
3205 | Unit *socket; | |
3206 | ||
45b10174 FS |
3207 | if (u->type != UNIT_SOCKET) { |
3208 | log_unit_debug(u, "Failed to deserialize accept-socket: unit is not a socket"); | |
3209 | return 0; | |
3210 | } | |
3211 | ||
9dfb64f8 ZJS |
3212 | r = manager_load_unit(u->manager, value, NULL, NULL, &socket); |
3213 | if (r < 0) | |
5e1ee764 | 3214 | log_unit_debug_errno(u, r, "Failed to load accept-socket unit '%s': %m", value); |
9dfb64f8 | 3215 | else { |
7f7d01ed | 3216 | unit_ref_set(&s->accept_socket, u, socket); |
9dfb64f8 ZJS |
3217 | SOCKET(socket)->n_connections++; |
3218 | } | |
3219 | ||
a16e1123 | 3220 | } else if (streq(key, "socket-fd")) { |
dff9808a LP |
3221 | asynchronous_close(s->socket_fd); |
3222 | s->socket_fd = deserialize_fd(fds, value); | |
a16e1123 | 3223 | |
2339fc93 | 3224 | } else if (streq(key, "fd-store-fd")) { |
30520492 | 3225 | _cleanup_free_ char *fdv = NULL, *fdn = NULL, *fdp = NULL; |
dff9808a LP |
3226 | _cleanup_close_ int fd = -EBADF; |
3227 | int do_poll; | |
2339fc93 | 3228 | |
30520492 | 3229 | r = extract_first_word(&value, &fdv, NULL, 0); |
dff9808a LP |
3230 | if (r <= 0) { |
3231 | log_unit_debug(u, "Failed to parse fd-store-fd value, ignoring: %s", value); | |
30520492 KL |
3232 | return 0; |
3233 | } | |
8dd4c05b | 3234 | |
dff9808a LP |
3235 | fd = deserialize_fd(fds, fdv); |
3236 | if (fd < 0) | |
3237 | return 0; | |
3238 | ||
30520492 KL |
3239 | r = extract_first_word(&value, &fdn, NULL, EXTRACT_CUNESCAPE | EXTRACT_UNQUOTE); |
3240 | if (r <= 0) { | |
dff9808a | 3241 | log_unit_debug(u, "Failed to parse fd-store-fd value, ignoring: %s", value); |
30520492 KL |
3242 | return 0; |
3243 | } | |
8dd4c05b | 3244 | |
30520492 KL |
3245 | r = extract_first_word(&value, &fdp, NULL, 0); |
3246 | if (r == 0) { | |
3247 | /* If the value is not present, we assume the default */ | |
3248 | do_poll = 1; | |
dff9808a LP |
3249 | } else if (r < 0 || (r = safe_atoi(fdp, &do_poll)) < 0) { |
3250 | log_unit_debug_errno(u, r, "Failed to parse fd-store-fd value \"%s\", ignoring: %m", value); | |
30520492 | 3251 | return 0; |
2339fc93 LP |
3252 | } |
3253 | ||
30520492 | 3254 | r = service_add_fd_store(s, fd, fdn, do_poll); |
a02287ea | 3255 | if (r < 0) { |
dff9808a | 3256 | log_unit_debug_errno(u, r, "Failed to store deserialized fd %i, ignoring: %m", fd); |
a02287ea YW |
3257 | return 0; |
3258 | } | |
dff9808a LP |
3259 | |
3260 | TAKE_FD(fd); | |
ecdbca40 LP |
3261 | } else if (streq(key, "main-exec-status-pid")) { |
3262 | pid_t pid; | |
3263 | ||
e364ad06 | 3264 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 3265 | log_unit_debug(u, "Failed to parse main-exec-status-pid value: %s", value); |
ecdbca40 LP |
3266 | else |
3267 | s->main_exec_status.pid = pid; | |
3268 | } else if (streq(key, "main-exec-status-code")) { | |
3269 | int i; | |
3270 | ||
e364ad06 | 3271 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 3272 | log_unit_debug(u, "Failed to parse main-exec-status-code value: %s", value); |
ecdbca40 LP |
3273 | else |
3274 | s->main_exec_status.code = i; | |
3275 | } else if (streq(key, "main-exec-status-status")) { | |
3276 | int i; | |
3277 | ||
e364ad06 | 3278 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 3279 | log_unit_debug(u, "Failed to parse main-exec-status-status value: %s", value); |
ecdbca40 LP |
3280 | else |
3281 | s->main_exec_status.status = i; | |
799fd0fd | 3282 | } else if (streq(key, "main-exec-status-start")) |
d68c645b | 3283 | deserialize_dual_timestamp(value, &s->main_exec_status.start_timestamp); |
799fd0fd | 3284 | else if (streq(key, "main-exec-status-exit")) |
d68c645b | 3285 | deserialize_dual_timestamp(value, &s->main_exec_status.exit_timestamp); |
19dff691 MY |
3286 | else if (streq(key, "notify-access-override")) { |
3287 | NotifyAccess notify_access; | |
3288 | ||
3289 | notify_access = notify_access_from_string(value); | |
3290 | if (notify_access < 0) | |
3291 | log_unit_debug(u, "Failed to parse notify-access-override value: %s", value); | |
3292 | else | |
3293 | s->notify_access_override = notify_access; | |
3294 | } else if (streq(key, "watchdog-timestamp")) | |
d68c645b | 3295 | deserialize_dual_timestamp(value, &s->watchdog_timestamp); |
613b411c | 3296 | else if (streq(key, "forbid-restart")) { |
6aca9a58 SE |
3297 | int b; |
3298 | ||
3299 | b = parse_boolean(value); | |
3300 | if (b < 0) | |
f2341e0a | 3301 | log_unit_debug(u, "Failed to parse forbid-restart value: %s", value); |
6aca9a58 SE |
3302 | else |
3303 | s->forbid_restart = b; | |
a34ceba6 | 3304 | } else if (streq(key, "stdin-fd")) { |
a34ceba6 | 3305 | |
dff9808a LP |
3306 | asynchronous_close(s->stdin_fd); |
3307 | s->stdin_fd = deserialize_fd(fds, value); | |
3308 | if (s->stdin_fd >= 0) | |
1e22b5cd | 3309 | s->exec_context.stdio_as_fds = true; |
dff9808a | 3310 | |
a34ceba6 | 3311 | } else if (streq(key, "stdout-fd")) { |
a34ceba6 | 3312 | |
dff9808a LP |
3313 | asynchronous_close(s->stdout_fd); |
3314 | s->stdout_fd = deserialize_fd(fds, value); | |
3315 | if (s->stdout_fd >= 0) | |
1e22b5cd | 3316 | s->exec_context.stdio_as_fds = true; |
dff9808a | 3317 | |
a34ceba6 | 3318 | } else if (streq(key, "stderr-fd")) { |
a34ceba6 | 3319 | |
dff9808a LP |
3320 | asynchronous_close(s->stderr_fd); |
3321 | s->stderr_fd = deserialize_fd(fds, value); | |
3322 | if (s->stderr_fd >= 0) | |
1e22b5cd | 3323 | s->exec_context.stdio_as_fds = true; |
dff9808a | 3324 | |
5686391b | 3325 | } else if (streq(key, "exec-fd")) { |
dff9808a | 3326 | _cleanup_close_ int fd = -EBADF; |
5686391b | 3327 | |
dff9808a LP |
3328 | fd = deserialize_fd(fds, value); |
3329 | if (fd >= 0) { | |
5dcadb4c | 3330 | s->exec_fd_event_source = sd_event_source_disable_unref(s->exec_fd_event_source); |
5686391b | 3331 | |
dff9808a LP |
3332 | if (service_allocate_exec_fd_event_source(s, fd, &s->exec_fd_event_source) >= 0) |
3333 | TAKE_FD(fd); | |
5686391b | 3334 | } |
dff9808a | 3335 | |
2787d83c | 3336 | } else if (streq(key, "watchdog-override-usec")) { |
d68c645b | 3337 | if (deserialize_usec(value, &s->watchdog_override_usec) < 0) |
2787d83c | 3338 | log_unit_debug(u, "Failed to parse watchdog_override_usec value: %s", value); |
d68c645b | 3339 | else |
2787d83c | 3340 | s->watchdog_override_enable = true; |
d68c645b | 3341 | |
aa8c4bbf LP |
3342 | } else if (streq(key, "watchdog-original-usec")) { |
3343 | if (deserialize_usec(value, &s->watchdog_original_usec) < 0) | |
3344 | log_unit_debug(u, "Failed to parse watchdog_original_usec value: %s", value); | |
3345 | ||
e266c068 MS |
3346 | } else if (STR_IN_SET(key, "main-command", "control-command")) { |
3347 | r = service_deserialize_exec_command(u, key, value); | |
3348 | if (r < 0) | |
3349 | log_unit_debug_errno(u, r, "Failed to parse serialized command \"%s\": %m", value); | |
7a0019d3 LP |
3350 | |
3351 | } else if (streq(key, "n-restarts")) { | |
3352 | r = safe_atou(value, &s->n_restarts); | |
3353 | if (r < 0) | |
3354 | log_unit_debug_errno(u, r, "Failed to parse serialized restart counter '%s': %m", value); | |
3355 | ||
3356 | } else if (streq(key, "flush-n-restarts")) { | |
3357 | r = parse_boolean(value); | |
3358 | if (r < 0) | |
3359 | log_unit_debug_errno(u, r, "Failed to parse serialized flush restart counter setting '%s': %m", value); | |
3360 | else | |
3361 | s->flush_n_restarts = r; | |
3bd28bf7 LP |
3362 | } else if (streq(key, "reload-begin-usec")) { |
3363 | r = deserialize_usec(value, &s->reload_begin_usec); | |
3364 | if (r < 0) | |
3365 | log_unit_debug_errno(u, r, "Failed to parse serialized reload begin timestamp '%s', ignoring: %m", value); | |
c17ec25e | 3366 | } else |
f2341e0a | 3367 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
3368 | |
3369 | return 0; | |
3370 | } | |
3371 | ||
d1e8e8b5 | 3372 | static UnitActiveState service_active_state(Unit *u) { |
e056b01d LP |
3373 | const UnitActiveState *table; |
3374 | ||
87f0e418 | 3375 | assert(u); |
5cb5a6ff | 3376 | |
e056b01d LP |
3377 | table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
3378 | ||
3379 | return table[SERVICE(u)->state]; | |
034c6ed7 LP |
3380 | } |
3381 | ||
10a94420 LP |
3382 | static const char *service_sub_state_to_string(Unit *u) { |
3383 | assert(u); | |
3384 | ||
3385 | return service_state_to_string(SERVICE(u)->state); | |
3386 | } | |
3387 | ||
f2f725e5 | 3388 | static bool service_may_gc(Unit *u) { |
701cc384 LP |
3389 | Service *s = SERVICE(u); |
3390 | ||
3391 | assert(s); | |
3392 | ||
e98b2fbb | 3393 | /* Never clean up services that still have a process around, even if the service is formally dead. Note that |
f2f725e5 | 3394 | * unit_may_gc() already checked our cgroup for us, we just check our two additional PIDs, too, in case they |
e98b2fbb LP |
3395 | * have moved outside of the cgroup. */ |
3396 | ||
3397 | if (main_pid_good(s) > 0 || | |
6d55002a | 3398 | control_pid_good(s) > 0) |
f2f725e5 | 3399 | return false; |
6d55002a | 3400 | |
a1d31573 LP |
3401 | /* Only allow collection of actually dead services, i.e. not those that are in the transitionary |
3402 | * SERVICE_DEAD_BEFORE_AUTO_RESTART/SERVICE_FAILED_BEFORE_AUTO_RESTART states. */ | |
b9c1883a | 3403 | if (!IN_SET(s->state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_DEAD_RESOURCES_PINNED)) |
a1d31573 LP |
3404 | return false; |
3405 | ||
f2f725e5 | 3406 | return true; |
6d55002a LP |
3407 | } |
3408 | ||
3a111838 MS |
3409 | static int service_retry_pid_file(Service *s) { |
3410 | int r; | |
3411 | ||
3412 | assert(s->pid_file); | |
3742095b | 3413 | assert(IN_SET(s->state, SERVICE_START, SERVICE_START_POST)); |
3a111838 MS |
3414 | |
3415 | r = service_load_pid_file(s, false); | |
3416 | if (r < 0) | |
3417 | return r; | |
3418 | ||
3419 | service_unwatch_pid_file(s); | |
3420 | ||
f42806df | 3421 | service_enter_running(s, SERVICE_SUCCESS); |
3a111838 MS |
3422 | return 0; |
3423 | } | |
3424 | ||
3425 | static int service_watch_pid_file(Service *s) { | |
3426 | int r; | |
3427 | ||
f2341e0a | 3428 | log_unit_debug(UNIT(s), "Setting watch for PID file %s", s->pid_file_pathspec->path); |
8bb2d17d | 3429 | |
5686391b | 3430 | r = path_spec_watch(s->pid_file_pathspec, service_dispatch_inotify_io); |
10691b9e LP |
3431 | if (r < 0) { |
3432 | log_unit_error_errno(UNIT(s), r, "Failed to set a watch for PID file %s: %m", s->pid_file_pathspec->path); | |
3433 | service_unwatch_pid_file(s); | |
3434 | return r; | |
3435 | } | |
3a111838 MS |
3436 | |
3437 | /* the pidfile might have appeared just before we set the watch */ | |
f2341e0a | 3438 | log_unit_debug(UNIT(s), "Trying to read PID file %s in case it changed", s->pid_file_pathspec->path); |
3a111838 MS |
3439 | service_retry_pid_file(s); |
3440 | ||
3441 | return 0; | |
3a111838 MS |
3442 | } |
3443 | ||
3444 | static int service_demand_pid_file(Service *s) { | |
51339a9a | 3445 | _cleanup_free_ PathSpec *ps = NULL; |
3a111838 MS |
3446 | |
3447 | assert(s->pid_file); | |
3448 | assert(!s->pid_file_pathspec); | |
3449 | ||
51339a9a | 3450 | ps = new(PathSpec, 1); |
3a111838 MS |
3451 | if (!ps) |
3452 | return -ENOMEM; | |
3453 | ||
51339a9a LP |
3454 | *ps = (PathSpec) { |
3455 | .unit = UNIT(s), | |
3456 | .path = strdup(s->pid_file), | |
3457 | /* PATH_CHANGED would not be enough. There are daemons (sendmail) that keep their PID file | |
3458 | * open all the time. */ | |
3459 | .type = PATH_MODIFIED, | |
3460 | .inotify_fd = -EBADF, | |
3461 | }; | |
3462 | ||
3463 | if (!ps->path) | |
3a111838 | 3464 | return -ENOMEM; |
3a111838 | 3465 | |
4ff361cc | 3466 | path_simplify(ps->path); |
3a111838 | 3467 | |
51339a9a | 3468 | s->pid_file_pathspec = TAKE_PTR(ps); |
3a111838 MS |
3469 | |
3470 | return service_watch_pid_file(s); | |
3471 | } | |
3472 | ||
5686391b | 3473 | static int service_dispatch_inotify_io(sd_event_source *source, int fd, uint32_t events, void *userdata) { |
99534007 | 3474 | PathSpec *p = ASSERT_PTR(userdata); |
e14c2802 LP |
3475 | Service *s; |
3476 | ||
e14c2802 | 3477 | s = SERVICE(p->unit); |
3a111838 MS |
3478 | |
3479 | assert(s); | |
3480 | assert(fd >= 0); | |
3742095b | 3481 | assert(IN_SET(s->state, SERVICE_START, SERVICE_START_POST)); |
3a111838 | 3482 | assert(s->pid_file_pathspec); |
57020a3a | 3483 | assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd)); |
3a111838 | 3484 | |
f2341e0a | 3485 | log_unit_debug(UNIT(s), "inotify event"); |
3a111838 | 3486 | |
e14c2802 | 3487 | if (path_spec_fd_event(p, events) < 0) |
3a111838 MS |
3488 | goto fail; |
3489 | ||
3490 | if (service_retry_pid_file(s) == 0) | |
718db961 | 3491 | return 0; |
3a111838 MS |
3492 | |
3493 | if (service_watch_pid_file(s) < 0) | |
3494 | goto fail; | |
3495 | ||
718db961 LP |
3496 | return 0; |
3497 | ||
3a111838 MS |
3498 | fail: |
3499 | service_unwatch_pid_file(s); | |
f42806df | 3500 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
718db961 | 3501 | return 0; |
3a111838 MS |
3502 | } |
3503 | ||
5686391b LP |
3504 | static int service_dispatch_exec_io(sd_event_source *source, int fd, uint32_t events, void *userdata) { |
3505 | Service *s = SERVICE(userdata); | |
3506 | ||
3507 | assert(s); | |
3508 | ||
3509 | log_unit_debug(UNIT(s), "got exec-fd event"); | |
3510 | ||
3511 | /* If Type=exec is set, we'll consider a service started successfully the instant we invoked execve() | |
3512 | * successfully for it. We implement this through a pipe() towards the child, which the kernel automatically | |
3513 | * closes for us due to O_CLOEXEC on execve() in the child, which then triggers EOF on the pipe in the | |
3514 | * parent. We need to be careful however, as there are other reasons that we might cause the child's side of | |
3515 | * the pipe to be closed (for example, a simple exit()). To deal with that we'll ignore EOFs on the pipe unless | |
3516 | * the child signalled us first that it is about to call the execve(). It does so by sending us a simple | |
3517 | * non-zero byte via the pipe. We also provide the child with a way to inform us in case execve() failed: if it | |
3518 | * sends a zero byte we'll ignore POLLHUP on the fd again. */ | |
3519 | ||
3520 | for (;;) { | |
3521 | uint8_t x; | |
3522 | ssize_t n; | |
3523 | ||
3524 | n = read(fd, &x, sizeof(x)); | |
3525 | if (n < 0) { | |
3526 | if (errno == EAGAIN) /* O_NONBLOCK in effect → everything queued has now been processed. */ | |
3527 | return 0; | |
3528 | ||
3529 | return log_unit_error_errno(UNIT(s), errno, "Failed to read from exec_fd: %m"); | |
3530 | } | |
3531 | if (n == 0) { /* EOF → the event we are waiting for */ | |
3532 | ||
5dcadb4c | 3533 | s->exec_fd_event_source = sd_event_source_disable_unref(s->exec_fd_event_source); |
5686391b LP |
3534 | |
3535 | if (s->exec_fd_hot) { /* Did the child tell us to expect EOF now? */ | |
3536 | log_unit_debug(UNIT(s), "Got EOF on exec-fd"); | |
3537 | ||
3538 | s->exec_fd_hot = false; | |
3539 | ||
3540 | /* Nice! This is what we have been waiting for. Transition to next state. */ | |
3541 | if (s->type == SERVICE_EXEC && s->state == SERVICE_START) | |
3542 | service_enter_start_post(s); | |
3543 | } else | |
3544 | log_unit_debug(UNIT(s), "Got EOF on exec-fd while it was disabled, ignoring."); | |
3545 | ||
3546 | return 0; | |
3547 | } | |
3548 | ||
3549 | /* A byte was read → this turns on/off the exec fd logic */ | |
3550 | assert(n == sizeof(x)); | |
3551 | s->exec_fd_hot = x; | |
3552 | } | |
3553 | ||
3554 | return 0; | |
3555 | } | |
3556 | ||
a911bb9a LP |
3557 | static void service_notify_cgroup_empty_event(Unit *u) { |
3558 | Service *s = SERVICE(u); | |
3559 | ||
3560 | assert(u); | |
3561 | ||
a5b5aece | 3562 | log_unit_debug(u, "Control group is empty."); |
a911bb9a LP |
3563 | |
3564 | switch (s->state) { | |
3565 | ||
a1d31573 LP |
3566 | /* Waiting for SIGCHLD is usually more interesting, because it includes return |
3567 | * codes/signals. Which is why we ignore the cgroup events for most cases, except when we | |
3568 | * don't know pid which to expect the SIGCHLD for. */ | |
a911bb9a LP |
3569 | |
3570 | case SERVICE_START: | |
3bd28bf7 | 3571 | if (IN_SET(s->type, SERVICE_NOTIFY, SERVICE_NOTIFY_RELOAD) && |
3c751b1b LP |
3572 | main_pid_good(s) == 0 && |
3573 | control_pid_good(s) == 0) { | |
3d474ef7 | 3574 | /* No chance of getting a ready notification anymore */ |
c3fda31d | 3575 | service_enter_stop_post(s, SERVICE_FAILURE_PROTOCOL); |
71e529fc JW |
3576 | break; |
3577 | } | |
3578 | ||
596e4470 HC |
3579 | if (s->exit_type == SERVICE_EXIT_CGROUP && main_pid_good(s) <= 0) |
3580 | service_enter_start_post(s); | |
3581 | ||
4831981d | 3582 | _fallthrough_; |
71e529fc | 3583 | case SERVICE_START_POST: |
3c751b1b LP |
3584 | if (s->pid_file_pathspec && |
3585 | main_pid_good(s) == 0 && | |
3586 | control_pid_good(s) == 0) { | |
3587 | ||
3d474ef7 | 3588 | /* Give up hoping for the daemon to write its PID file */ |
f2341e0a | 3589 | log_unit_warning(u, "Daemon never wrote its PID file. Failing."); |
8bb2d17d | 3590 | |
a911bb9a LP |
3591 | service_unwatch_pid_file(s); |
3592 | if (s->state == SERVICE_START) | |
c3fda31d | 3593 | service_enter_stop_post(s, SERVICE_FAILURE_PROTOCOL); |
a911bb9a | 3594 | else |
c35755fb | 3595 | service_enter_stop(s, SERVICE_FAILURE_PROTOCOL); |
a911bb9a LP |
3596 | } |
3597 | break; | |
3598 | ||
3599 | case SERVICE_RUNNING: | |
3600 | /* service_enter_running() will figure out what to do */ | |
3601 | service_enter_running(s, SERVICE_SUCCESS); | |
3602 | break; | |
3603 | ||
c87700a1 | 3604 | case SERVICE_STOP_WATCHDOG: |
a911bb9a LP |
3605 | case SERVICE_STOP_SIGTERM: |
3606 | case SERVICE_STOP_SIGKILL: | |
3607 | ||
b13ddbbc | 3608 | if (main_pid_good(s) <= 0 && control_pid_good(s) <= 0) |
a911bb9a LP |
3609 | service_enter_stop_post(s, SERVICE_SUCCESS); |
3610 | ||
3611 | break; | |
3612 | ||
3613 | case SERVICE_STOP_POST: | |
bf760801 | 3614 | case SERVICE_FINAL_WATCHDOG: |
a911bb9a LP |
3615 | case SERVICE_FINAL_SIGTERM: |
3616 | case SERVICE_FINAL_SIGKILL: | |
b13ddbbc | 3617 | if (main_pid_good(s) <= 0 && control_pid_good(s) <= 0) |
a911bb9a LP |
3618 | service_enter_dead(s, SERVICE_SUCCESS, true); |
3619 | ||
3620 | break; | |
3621 | ||
e08dabfe AZ |
3622 | /* If the cgroup empty notification comes when the unit is not active, we must have failed to clean |
3623 | * up the cgroup earlier and should do it now. */ | |
a1d31573 | 3624 | case SERVICE_AUTO_RESTART: |
09d04ad3 | 3625 | case SERVICE_AUTO_RESTART_QUEUED: |
e08dabfe AZ |
3626 | unit_prune_cgroup(u); |
3627 | break; | |
3628 | ||
a911bb9a LP |
3629 | default: |
3630 | ; | |
3631 | } | |
3632 | } | |
3633 | ||
38c41427 | 3634 | static void service_notify_cgroup_oom_event(Unit *u, bool managed_oom) { |
afcfaa69 LP |
3635 | Service *s = SERVICE(u); |
3636 | ||
38c41427 NK |
3637 | if (managed_oom) |
3638 | log_unit_debug(u, "Process(es) of control group were killed by systemd-oomd."); | |
3639 | else | |
3640 | log_unit_debug(u, "Process of control group was killed by the OOM killer."); | |
afcfaa69 LP |
3641 | |
3642 | if (s->oom_policy == OOM_CONTINUE) | |
3643 | return; | |
3644 | ||
3645 | switch (s->state) { | |
3646 | ||
31cd5f63 | 3647 | case SERVICE_CONDITION: |
afcfaa69 LP |
3648 | case SERVICE_START_PRE: |
3649 | case SERVICE_START: | |
3650 | case SERVICE_START_POST: | |
3651 | case SERVICE_STOP: | |
3652 | if (s->oom_policy == OOM_STOP) | |
3653 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_OOM_KILL); | |
3654 | else if (s->oom_policy == OOM_KILL) | |
3655 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_OOM_KILL); | |
3656 | ||
3657 | break; | |
3658 | ||
3659 | case SERVICE_EXITED: | |
3660 | case SERVICE_RUNNING: | |
3661 | if (s->oom_policy == OOM_STOP) | |
3662 | service_enter_stop(s, SERVICE_FAILURE_OOM_KILL); | |
3663 | else if (s->oom_policy == OOM_KILL) | |
3664 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_OOM_KILL); | |
3665 | ||
3666 | break; | |
3667 | ||
3668 | case SERVICE_STOP_WATCHDOG: | |
3669 | case SERVICE_STOP_SIGTERM: | |
3670 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_OOM_KILL); | |
3671 | break; | |
3672 | ||
3673 | case SERVICE_STOP_SIGKILL: | |
3674 | case SERVICE_FINAL_SIGKILL: | |
3675 | if (s->result == SERVICE_SUCCESS) | |
3676 | s->result = SERVICE_FAILURE_OOM_KILL; | |
3677 | break; | |
3678 | ||
3679 | case SERVICE_STOP_POST: | |
3680 | case SERVICE_FINAL_SIGTERM: | |
3681 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_OOM_KILL); | |
3682 | break; | |
3683 | ||
3684 | default: | |
3685 | ; | |
3686 | } | |
3687 | } | |
3688 | ||
87f0e418 | 3689 | static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
5cdabc8d | 3690 | bool notify_dbus = true; |
87f0e418 | 3691 | Service *s = SERVICE(u); |
f42806df | 3692 | ServiceResult f; |
e5123725 | 3693 | ExitClean clean_mode; |
c917a807 | 3694 | int r; |
5cb5a6ff LP |
3695 | |
3696 | assert(s); | |
034c6ed7 LP |
3697 | assert(pid >= 0); |
3698 | ||
e5123725 AZ |
3699 | /* Oneshot services and non-SERVICE_EXEC_START commands should not be |
3700 | * considered daemons as they are typically not long running. */ | |
c79ab77c | 3701 | if (s->type == SERVICE_ONESHOT || (s->control_pid.pid == pid && s->control_command_id != SERVICE_EXEC_START)) |
e5123725 AZ |
3702 | clean_mode = EXIT_CLEAN_COMMAND; |
3703 | else | |
3704 | clean_mode = EXIT_CLEAN_DAEMON; | |
3705 | ||
3706 | if (is_clean_exit(code, status, clean_mode, &s->success_status)) | |
f42806df LP |
3707 | f = SERVICE_SUCCESS; |
3708 | else if (code == CLD_EXITED) | |
3709 | f = SERVICE_FAILURE_EXIT_CODE; | |
3710 | else if (code == CLD_KILLED) | |
3711 | f = SERVICE_FAILURE_SIGNAL; | |
3712 | else if (code == CLD_DUMPED) | |
3713 | f = SERVICE_FAILURE_CORE_DUMP; | |
d06dacd0 | 3714 | else |
04499a70 | 3715 | assert_not_reached(); |
034c6ed7 | 3716 | |
c79ab77c | 3717 | if (s->main_pid.pid == pid) { |
13bb1ffb ZJS |
3718 | /* Clean up the exec_fd event source. We want to do this here, not later in |
3719 | * service_set_state(), because service_enter_stop_post() calls service_spawn(). | |
3720 | * The source owns its end of the pipe, so this will close that too. */ | |
3721 | s->exec_fd_event_source = sd_event_source_disable_unref(s->exec_fd_event_source); | |
3722 | ||
db01f8b3 MS |
3723 | /* Forking services may occasionally move to a new PID. |
3724 | * As long as they update the PID file before exiting the old | |
3725 | * PID, they're fine. */ | |
db256aab | 3726 | if (service_load_pid_file(s, false) > 0) |
db01f8b3 | 3727 | return; |
034c6ed7 | 3728 | |
c79ab77c | 3729 | pidref_done(&s->main_pid); |
6ea832a2 | 3730 | exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status); |
034c6ed7 | 3731 | |
867b3b7d | 3732 | if (s->main_command) { |
fbeefb45 LP |
3733 | /* If this is not a forking service than the |
3734 | * main process got started and hence we copy | |
3735 | * the exit status so that it is recorded both | |
3736 | * as main and as control process exit | |
3737 | * status */ | |
3738 | ||
867b3b7d | 3739 | s->main_command->exec_status = s->main_exec_status; |
b708e7ce | 3740 | |
3ed0cd26 | 3741 | if (s->main_command->flags & EXEC_COMMAND_IGNORE_FAILURE) |
f42806df | 3742 | f = SERVICE_SUCCESS; |
fbeefb45 LP |
3743 | } else if (s->exec_command[SERVICE_EXEC_START]) { |
3744 | ||
3745 | /* If this is a forked process, then we should | |
3746 | * ignore the return value if this was | |
3747 | * configured for the starter process */ | |
3748 | ||
3ed0cd26 | 3749 | if (s->exec_command[SERVICE_EXEC_START]->flags & EXEC_COMMAND_IGNORE_FAILURE) |
fbeefb45 | 3750 | f = SERVICE_SUCCESS; |
034c6ed7 LP |
3751 | } |
3752 | ||
91bbd9b7 | 3753 | unit_log_process_exit( |
5cc2cd1c | 3754 | u, |
abaf5edd | 3755 | "Main process", |
91bbd9b7 | 3756 | service_exec_command_to_string(SERVICE_EXEC_START), |
5cc2cd1c | 3757 | f == SERVICE_SUCCESS, |
91bbd9b7 | 3758 | code, status); |
f42806df | 3759 | |
a0fef983 | 3760 | if (s->result == SERVICE_SUCCESS) |
f42806df | 3761 | s->result = f; |
034c6ed7 | 3762 | |
867b3b7d LP |
3763 | if (s->main_command && |
3764 | s->main_command->command_next && | |
b58aeb70 | 3765 | s->type == SERVICE_ONESHOT && |
f42806df | 3766 | f == SERVICE_SUCCESS) { |
034c6ed7 | 3767 | |
e78695d4 | 3768 | /* There is another command to execute, so let's do that. */ |
034c6ed7 | 3769 | |
f2341e0a | 3770 | log_unit_debug(u, "Running next main command for state %s.", service_state_to_string(s->state)); |
f42806df | 3771 | service_run_next_main(s); |
034c6ed7 | 3772 | |
34e9ba66 | 3773 | } else { |
867b3b7d | 3774 | s->main_command = NULL; |
34e9ba66 | 3775 | |
3bd28bf7 LP |
3776 | /* Services with ExitType=cgroup do not act on main PID exiting, unless the cgroup is |
3777 | * already empty */ | |
596e4470 HC |
3778 | if (s->exit_type == SERVICE_EXIT_MAIN || cgroup_good(s) <= 0) { |
3779 | /* The service exited, so the service is officially gone. */ | |
3780 | switch (s->state) { | |
3781 | ||
3782 | case SERVICE_START_POST: | |
3783 | case SERVICE_RELOAD: | |
3bd28bf7 LP |
3784 | case SERVICE_RELOAD_SIGNAL: |
3785 | case SERVICE_RELOAD_NOTIFY: | |
3786 | /* If neither main nor control processes are running then the current | |
3787 | * state can never exit cleanly, hence immediately terminate the | |
3788 | * service. */ | |
596e4470 HC |
3789 | if (control_pid_good(s) <= 0) |
3790 | service_enter_stop(s, f); | |
3791 | ||
3792 | /* Otherwise need to wait until the operation is done. */ | |
3793 | break; | |
bbe19f68 | 3794 | |
596e4470 HC |
3795 | case SERVICE_STOP: |
3796 | /* Need to wait until the operation is done. */ | |
3797 | break; | |
bbe19f68 | 3798 | |
596e4470 HC |
3799 | case SERVICE_START: |
3800 | if (s->type == SERVICE_ONESHOT) { | |
3801 | /* This was our main goal, so let's go on */ | |
3802 | if (f == SERVICE_SUCCESS) | |
3803 | service_enter_start_post(s); | |
3804 | else | |
3805 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); | |
3806 | break; | |
3bd28bf7 | 3807 | } else if (IN_SET(s->type, SERVICE_NOTIFY, SERVICE_NOTIFY_RELOAD)) { |
596e4470 HC |
3808 | /* Only enter running through a notification, so that the |
3809 | * SERVICE_START state signifies that no ready notification | |
3810 | * has been received */ | |
3811 | if (f != SERVICE_SUCCESS) | |
3812 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); | |
19dff691 | 3813 | else if (!s->remain_after_exit || service_get_notify_access(s) == NOTIFY_MAIN) |
596e4470 HC |
3814 | /* The service has never been and will never be active */ |
3815 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_PROTOCOL); | |
3816 | break; | |
3817 | } | |
7d55e835 | 3818 | |
596e4470 HC |
3819 | _fallthrough_; |
3820 | case SERVICE_RUNNING: | |
3821 | service_enter_running(s, f); | |
3d474ef7 | 3822 | break; |
034c6ed7 | 3823 | |
596e4470 HC |
3824 | case SERVICE_STOP_WATCHDOG: |
3825 | case SERVICE_STOP_SIGTERM: | |
3826 | case SERVICE_STOP_SIGKILL: | |
5cb5a6ff | 3827 | |
596e4470 HC |
3828 | if (control_pid_good(s) <= 0) |
3829 | service_enter_stop_post(s, f); | |
5cb5a6ff | 3830 | |
596e4470 HC |
3831 | /* If there is still a control process, wait for that first */ |
3832 | break; | |
34e9ba66 | 3833 | |
596e4470 | 3834 | case SERVICE_STOP_POST: |
c1566ef0 | 3835 | |
596e4470 HC |
3836 | if (control_pid_good(s) <= 0) |
3837 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, f); | |
c1566ef0 | 3838 | |
596e4470 | 3839 | break; |
c1566ef0 | 3840 | |
596e4470 HC |
3841 | case SERVICE_FINAL_WATCHDOG: |
3842 | case SERVICE_FINAL_SIGTERM: | |
3843 | case SERVICE_FINAL_SIGKILL: | |
bf108e55 | 3844 | |
596e4470 HC |
3845 | if (control_pid_good(s) <= 0) |
3846 | service_enter_dead(s, f, true); | |
3847 | break; | |
bf108e55 | 3848 | |
596e4470 HC |
3849 | default: |
3850 | assert_not_reached(); | |
3851 | } | |
ef430065 FT |
3852 | } else if (s->exit_type == SERVICE_EXIT_CGROUP && s->state == SERVICE_START) |
3853 | /* If a main process exits very quickly, this function might be executed | |
3854 | * before service_dispatch_exec_io(). Since this function disabled IO events | |
3855 | * to monitor the main process above, we need to update the state here too. | |
3856 | * Let's consider the process is successfully launched and exited. */ | |
3857 | service_enter_start_post(s); | |
034c6ed7 | 3858 | } |
5cb5a6ff | 3859 | |
c79ab77c | 3860 | } else if (s->control_pid.pid == pid) { |
58441bc1 ZJS |
3861 | const char *kind; |
3862 | bool success; | |
3863 | ||
c79ab77c | 3864 | pidref_done(&s->control_pid); |
34e9ba66 | 3865 | |
b708e7ce | 3866 | if (s->control_command) { |
8bb2d17d | 3867 | exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status); |
a16e1123 | 3868 | |
3ed0cd26 | 3869 | if (s->control_command->flags & EXEC_COMMAND_IGNORE_FAILURE) |
f42806df | 3870 | f = SERVICE_SUCCESS; |
b708e7ce LP |
3871 | } |
3872 | ||
42e6f549 AZ |
3873 | /* ExecCondition= calls that exit with (0, 254] should invoke skip-like behavior instead of failing */ |
3874 | if (s->state == SERVICE_CONDITION) { | |
3875 | if (f == SERVICE_FAILURE_EXIT_CODE && status < 255) { | |
3876 | UNIT(s)->condition_result = false; | |
3877 | f = SERVICE_SKIP_CONDITION; | |
58441bc1 ZJS |
3878 | success = true; |
3879 | } else if (f == SERVICE_SUCCESS) { | |
42e6f549 | 3880 | UNIT(s)->condition_result = true; |
58441bc1 ZJS |
3881 | success = true; |
3882 | } else | |
3883 | success = false; | |
3884 | ||
3885 | kind = "Condition check process"; | |
3886 | } else { | |
3887 | kind = "Control process"; | |
3888 | success = f == SERVICE_SUCCESS; | |
42e6f549 AZ |
3889 | } |
3890 | ||
91bbd9b7 | 3891 | unit_log_process_exit( |
5cc2cd1c | 3892 | u, |
58441bc1 | 3893 | kind, |
91bbd9b7 | 3894 | service_exec_command_to_string(s->control_command_id), |
58441bc1 | 3895 | success, |
91bbd9b7 | 3896 | code, status); |
f42806df | 3897 | |
d611cfa7 | 3898 | if (s->state != SERVICE_RELOAD && s->result == SERVICE_SUCCESS) |
f42806df | 3899 | s->result = f; |
034c6ed7 | 3900 | |
34e9ba66 LP |
3901 | if (s->control_command && |
3902 | s->control_command->command_next && | |
f42806df | 3903 | f == SERVICE_SUCCESS) { |
034c6ed7 | 3904 | |
3bd28bf7 | 3905 | /* There is another command to * execute, so let's do that. */ |
034c6ed7 | 3906 | |
f2341e0a | 3907 | log_unit_debug(u, "Running next control command for state %s.", service_state_to_string(s->state)); |
f42806df | 3908 | service_run_next_control(s); |
034c6ed7 | 3909 | |
80876c20 | 3910 | } else { |
3bd28bf7 | 3911 | /* No further commands for this step, so let's figure out what to do next */ |
034c6ed7 | 3912 | |
a16e1123 LP |
3913 | s->control_command = NULL; |
3914 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
3915 | ||
f2341e0a | 3916 | log_unit_debug(u, "Got final SIGCHLD for state %s.", service_state_to_string(s->state)); |
bd982a8b | 3917 | |
034c6ed7 LP |
3918 | switch (s->state) { |
3919 | ||
31cd5f63 AZ |
3920 | case SERVICE_CONDITION: |
3921 | if (f == SERVICE_SUCCESS) | |
3922 | service_enter_start_pre(s); | |
3923 | else | |
3924 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); | |
3925 | break; | |
3926 | ||
034c6ed7 | 3927 | case SERVICE_START_PRE: |
f42806df | 3928 | if (f == SERVICE_SUCCESS) |
034c6ed7 LP |
3929 | service_enter_start(s); |
3930 | else | |
c3fda31d | 3931 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
034c6ed7 LP |
3932 | break; |
3933 | ||
3934 | case SERVICE_START: | |
bfba3256 LP |
3935 | if (s->type != SERVICE_FORKING) |
3936 | /* Maybe spurious event due to a reload that changed the type? */ | |
3937 | break; | |
034c6ed7 | 3938 | |
f42806df | 3939 | if (f != SERVICE_SUCCESS) { |
c3fda31d | 3940 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
3a111838 MS |
3941 | break; |
3942 | } | |
034c6ed7 | 3943 | |
3a111838 | 3944 | if (s->pid_file) { |
f42806df | 3945 | bool has_start_post; |
f42806df | 3946 | |
3a111838 MS |
3947 | /* Let's try to load the pid file here if we can. |
3948 | * The PID file might actually be created by a START_POST | |
3949 | * script. In that case don't worry if the loading fails. */ | |
f42806df | 3950 | |
5d904a6a | 3951 | has_start_post = s->exec_command[SERVICE_EXEC_START_POST]; |
f42806df | 3952 | r = service_load_pid_file(s, !has_start_post); |
3a111838 MS |
3953 | if (!has_start_post && r < 0) { |
3954 | r = service_demand_pid_file(s); | |
b13ddbbc | 3955 | if (r < 0 || cgroup_good(s) == 0) |
c3fda31d | 3956 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_PROTOCOL); |
3a111838 MS |
3957 | break; |
3958 | } | |
034c6ed7 | 3959 | } else |
783e05d6 | 3960 | service_search_main_pid(s); |
034c6ed7 | 3961 | |
3a111838 | 3962 | service_enter_start_post(s); |
034c6ed7 LP |
3963 | break; |
3964 | ||
3965 | case SERVICE_START_POST: | |
f42806df | 3966 | if (f != SERVICE_SUCCESS) { |
ce359e98 | 3967 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
2096e009 | 3968 | break; |
034c6ed7 LP |
3969 | } |
3970 | ||
2096e009 | 3971 | if (s->pid_file) { |
f42806df | 3972 | r = service_load_pid_file(s, true); |
2096e009 MS |
3973 | if (r < 0) { |
3974 | r = service_demand_pid_file(s); | |
b13ddbbc | 3975 | if (r < 0 || cgroup_good(s) == 0) |
c35755fb | 3976 | service_enter_stop(s, SERVICE_FAILURE_PROTOCOL); |
2096e009 MS |
3977 | break; |
3978 | } | |
3979 | } else | |
783e05d6 | 3980 | service_search_main_pid(s); |
2096e009 | 3981 | |
f42806df | 3982 | service_enter_running(s, SERVICE_SUCCESS); |
3185a36b | 3983 | break; |
034c6ed7 LP |
3984 | |
3985 | case SERVICE_RELOAD: | |
3bd28bf7 LP |
3986 | case SERVICE_RELOAD_SIGNAL: |
3987 | case SERVICE_RELOAD_NOTIFY: | |
7236ce6e ZJS |
3988 | if (f == SERVICE_SUCCESS) |
3989 | if (service_load_pid_file(s, true) < 0) | |
3990 | service_search_main_pid(s); | |
3185a36b | 3991 | |
f42806df | 3992 | s->reload_result = f; |
3bd28bf7 | 3993 | |
d09df6b9 | 3994 | /* If the last notification we received from the service process indicates |
3bd28bf7 LP |
3995 | * we are still reloading, then don't leave reloading state just yet, just |
3996 | * transition into SERVICE_RELOAD_NOTIFY, to wait for the READY=1 coming, | |
3997 | * too. */ | |
3998 | if (s->notify_state == NOTIFY_RELOADING) | |
3999 | service_set_state(s, SERVICE_RELOAD_NOTIFY); | |
4000 | else | |
4001 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
4002 | break; |
4003 | ||
4004 | case SERVICE_STOP: | |
f42806df | 4005 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
034c6ed7 LP |
4006 | break; |
4007 | ||
c87700a1 | 4008 | case SERVICE_STOP_WATCHDOG: |
034c6ed7 LP |
4009 | case SERVICE_STOP_SIGTERM: |
4010 | case SERVICE_STOP_SIGKILL: | |
4011 | if (main_pid_good(s) <= 0) | |
f42806df | 4012 | service_enter_stop_post(s, f); |
034c6ed7 | 4013 | |
846a07b5 | 4014 | /* If there is still a service process around, wait until |
034c6ed7 LP |
4015 | * that one quit, too */ |
4016 | break; | |
4017 | ||
4018 | case SERVICE_STOP_POST: | |
c1566ef0 AZ |
4019 | if (main_pid_good(s) <= 0) |
4020 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, f); | |
4021 | break; | |
4022 | ||
bf760801 | 4023 | case SERVICE_FINAL_WATCHDOG: |
034c6ed7 LP |
4024 | case SERVICE_FINAL_SIGTERM: |
4025 | case SERVICE_FINAL_SIGKILL: | |
bf108e55 LP |
4026 | if (main_pid_good(s) <= 0) |
4027 | service_enter_dead(s, f, true); | |
034c6ed7 LP |
4028 | break; |
4029 | ||
4c2f5842 LP |
4030 | case SERVICE_CLEANING: |
4031 | ||
4032 | if (s->clean_result == SERVICE_SUCCESS) | |
4033 | s->clean_result = f; | |
4034 | ||
4035 | service_enter_dead(s, SERVICE_SUCCESS, false); | |
4036 | break; | |
4037 | ||
034c6ed7 | 4038 | default: |
04499a70 | 4039 | assert_not_reached(); |
034c6ed7 LP |
4040 | } |
4041 | } | |
5cdabc8d LP |
4042 | } else /* Neither control nor main PID? If so, don't notify about anything */ |
4043 | notify_dbus = false; | |
c4e2ceae LP |
4044 | |
4045 | /* Notify clients about changed exit status */ | |
5cdabc8d LP |
4046 | if (notify_dbus) |
4047 | unit_add_to_dbus_queue(u); | |
a911bb9a | 4048 | |
846a07b5 FB |
4049 | /* We watch the main/control process otherwise we can't retrieve the unit they |
4050 | * belong to with cgroupv1. But if they are not our direct child, we won't get a | |
4051 | * SIGCHLD for them. Therefore we need to look for others to watch so we can | |
4052 | * detect when the cgroup becomes empty. Note that the control process is always | |
4053 | * our child so it's pointless to watch all other processes. */ | |
4054 | if (!control_pid_good(s)) | |
4055 | if (!s->main_pid_known || s->main_pid_alien) | |
4056 | (void) unit_enqueue_rewatch_pids(u); | |
034c6ed7 LP |
4057 | } |
4058 | ||
718db961 LP |
4059 | static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
4060 | Service *s = SERVICE(userdata); | |
034c6ed7 LP |
4061 | |
4062 | assert(s); | |
718db961 | 4063 | assert(source == s->timer_event_source); |
034c6ed7 LP |
4064 | |
4065 | switch (s->state) { | |
4066 | ||
31cd5f63 | 4067 | case SERVICE_CONDITION: |
034c6ed7 LP |
4068 | case SERVICE_START_PRE: |
4069 | case SERVICE_START: | |
4070 | case SERVICE_START_POST: | |
bf760801 JK |
4071 | switch (s->timeout_start_failure_mode) { |
4072 | ||
4073 | case SERVICE_TIMEOUT_TERMINATE: | |
4074 | log_unit_warning(UNIT(s), "%s operation timed out. Terminating.", service_state_to_string(s->state)); | |
4075 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); | |
4076 | break; | |
4077 | ||
4078 | case SERVICE_TIMEOUT_ABORT: | |
4079 | log_unit_warning(UNIT(s), "%s operation timed out. Aborting.", service_state_to_string(s->state)); | |
4080 | service_enter_signal(s, SERVICE_STOP_WATCHDOG, SERVICE_FAILURE_TIMEOUT); | |
4081 | break; | |
4082 | ||
4083 | case SERVICE_TIMEOUT_KILL: | |
4084 | if (s->kill_context.send_sigkill) { | |
4085 | log_unit_warning(UNIT(s), "%s operation timed out. Killing.", service_state_to_string(s->state)); | |
4086 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); | |
4087 | } else { | |
4088 | log_unit_warning(UNIT(s), "%s operation timed out. Skipping SIGKILL.", service_state_to_string(s->state)); | |
4089 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); | |
4090 | } | |
4091 | break; | |
4092 | ||
4093 | default: | |
04499a70 | 4094 | assert_not_reached(); |
bf760801 | 4095 | } |
034c6ed7 LP |
4096 | break; |
4097 | ||
36c16a7c LP |
4098 | case SERVICE_RUNNING: |
4099 | log_unit_warning(UNIT(s), "Service reached runtime time limit. Stopping."); | |
4100 | service_enter_stop(s, SERVICE_FAILURE_TIMEOUT); | |
4101 | break; | |
4102 | ||
e2f3b44c | 4103 | case SERVICE_RELOAD: |
3bd28bf7 LP |
4104 | case SERVICE_RELOAD_SIGNAL: |
4105 | case SERVICE_RELOAD_NOTIFY: | |
089b64d5 | 4106 | log_unit_warning(UNIT(s), "Reload operation timed out. Killing reload process."); |
e9a4f676 | 4107 | service_kill_control_process(s); |
f42806df LP |
4108 | s->reload_result = SERVICE_FAILURE_TIMEOUT; |
4109 | service_enter_running(s, SERVICE_SUCCESS); | |
e2f3b44c LP |
4110 | break; |
4111 | ||
034c6ed7 | 4112 | case SERVICE_STOP: |
bf760801 JK |
4113 | switch (s->timeout_stop_failure_mode) { |
4114 | ||
4115 | case SERVICE_TIMEOUT_TERMINATE: | |
4116 | log_unit_warning(UNIT(s), "Stopping timed out. Terminating."); | |
4117 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); | |
4118 | break; | |
4119 | ||
4120 | case SERVICE_TIMEOUT_ABORT: | |
4121 | log_unit_warning(UNIT(s), "Stopping timed out. Aborting."); | |
4122 | service_enter_signal(s, SERVICE_STOP_WATCHDOG, SERVICE_FAILURE_TIMEOUT); | |
4123 | break; | |
4124 | ||
4125 | case SERVICE_TIMEOUT_KILL: | |
4126 | if (s->kill_context.send_sigkill) { | |
4127 | log_unit_warning(UNIT(s), "Stopping timed out. Killing."); | |
4128 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); | |
4129 | } else { | |
4130 | log_unit_warning(UNIT(s), "Stopping timed out. Skipping SIGKILL."); | |
4131 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); | |
4132 | } | |
4133 | break; | |
4134 | ||
4135 | default: | |
04499a70 | 4136 | assert_not_reached(); |
bf760801 | 4137 | } |
034c6ed7 LP |
4138 | break; |
4139 | ||
c87700a1 | 4140 | case SERVICE_STOP_WATCHDOG: |
bf760801 JK |
4141 | if (s->kill_context.send_sigkill) { |
4142 | log_unit_warning(UNIT(s), "State 'stop-watchdog' timed out. Killing."); | |
4143 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); | |
4144 | } else { | |
4145 | log_unit_warning(UNIT(s), "State 'stop-watchdog' timed out. Skipping SIGKILL."); | |
4146 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); | |
4147 | } | |
db2cb23b UTL |
4148 | break; |
4149 | ||
034c6ed7 | 4150 | case SERVICE_STOP_SIGTERM: |
bf760801 JK |
4151 | if (s->timeout_stop_failure_mode == SERVICE_TIMEOUT_ABORT) { |
4152 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Aborting."); | |
4153 | service_enter_signal(s, SERVICE_STOP_WATCHDOG, SERVICE_FAILURE_TIMEOUT); | |
4154 | } else if (s->kill_context.send_sigkill) { | |
f2341e0a | 4155 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Killing."); |
f42806df | 4156 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 4157 | } else { |
f2341e0a | 4158 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Skipping SIGKILL."); |
f42806df | 4159 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
ba035df2 LP |
4160 | } |
4161 | ||
034c6ed7 LP |
4162 | break; |
4163 | ||
4164 | case SERVICE_STOP_SIGKILL: | |
35b8ca3a | 4165 | /* Uh, we sent a SIGKILL and it is still not gone? |
034c6ed7 LP |
4166 | * Must be something we cannot kill, so let's just be |
4167 | * weirded out and continue */ | |
4168 | ||
f2341e0a | 4169 | log_unit_warning(UNIT(s), "Processes still around after SIGKILL. Ignoring."); |
f42806df | 4170 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
4171 | break; |
4172 | ||
4173 | case SERVICE_STOP_POST: | |
bf760801 JK |
4174 | switch (s->timeout_stop_failure_mode) { |
4175 | ||
4176 | case SERVICE_TIMEOUT_TERMINATE: | |
4177 | log_unit_warning(UNIT(s), "State 'stop-post' timed out. Terminating."); | |
4178 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT); | |
4179 | break; | |
4180 | ||
4181 | case SERVICE_TIMEOUT_ABORT: | |
4182 | log_unit_warning(UNIT(s), "State 'stop-post' timed out. Aborting."); | |
4183 | service_enter_signal(s, SERVICE_FINAL_WATCHDOG, SERVICE_FAILURE_TIMEOUT); | |
4184 | break; | |
4185 | ||
4186 | case SERVICE_TIMEOUT_KILL: | |
4187 | if (s->kill_context.send_sigkill) { | |
4188 | log_unit_warning(UNIT(s), "State 'stop-post' timed out. Killing."); | |
4189 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT); | |
4190 | } else { | |
4191 | log_unit_warning(UNIT(s), "State 'stop-post' timed out. Skipping SIGKILL. Entering failed mode."); | |
4192 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false); | |
4193 | } | |
4194 | break; | |
4195 | ||
4196 | default: | |
04499a70 | 4197 | assert_not_reached(); |
bf760801 | 4198 | } |
034c6ed7 LP |
4199 | break; |
4200 | ||
bf760801 | 4201 | case SERVICE_FINAL_WATCHDOG: |
4819ff03 | 4202 | if (s->kill_context.send_sigkill) { |
bf760801 | 4203 | log_unit_warning(UNIT(s), "State 'final-watchdog' timed out. Killing."); |
f42806df | 4204 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 4205 | } else { |
bf760801 JK |
4206 | log_unit_warning(UNIT(s), "State 'final-watchdog' timed out. Skipping SIGKILL. Entering failed mode."); |
4207 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false); | |
4208 | } | |
4209 | break; | |
4210 | ||
4211 | case SERVICE_FINAL_SIGTERM: | |
4212 | if (s->timeout_stop_failure_mode == SERVICE_TIMEOUT_ABORT) { | |
4213 | log_unit_warning(UNIT(s), "State 'final-sigterm' timed out. Aborting."); | |
4214 | service_enter_signal(s, SERVICE_FINAL_WATCHDOG, SERVICE_FAILURE_TIMEOUT); | |
4215 | } else if (s->kill_context.send_sigkill) { | |
4216 | log_unit_warning(UNIT(s), "State 'final-sigterm' timed out. Killing."); | |
4217 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT); | |
4218 | } else { | |
4219 | log_unit_warning(UNIT(s), "State 'final-sigterm' timed out. Skipping SIGKILL. Entering failed mode."); | |
f42806df | 4220 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false); |
ba035df2 LP |
4221 | } |
4222 | ||
034c6ed7 LP |
4223 | break; |
4224 | ||
4225 | case SERVICE_FINAL_SIGKILL: | |
f2341e0a | 4226 | log_unit_warning(UNIT(s), "Processes still around after final SIGKILL. Entering failed mode."); |
f42806df | 4227 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true); |
034c6ed7 LP |
4228 | break; |
4229 | ||
4230 | case SERVICE_AUTO_RESTART: | |
5291f26d | 4231 | if (s->restart_usec > 0) |
868f7d36 | 4232 | log_unit_debug(UNIT(s), |
be1adc27 | 4233 | "Service restart interval %s expired, scheduling restart.", |
5171356e | 4234 | FORMAT_TIMESPAN(service_restart_usec_next(s), USEC_PER_SEC)); |
5291f26d | 4235 | else |
868f7d36 ZJS |
4236 | log_unit_debug(UNIT(s), |
4237 | "Service has no hold-off time (RestartSec=0), scheduling restart."); | |
5ce6e7f5 | 4238 | |
034c6ed7 LP |
4239 | service_enter_restart(s); |
4240 | break; | |
4241 | ||
4c2f5842 LP |
4242 | case SERVICE_CLEANING: |
4243 | log_unit_warning(UNIT(s), "Cleaning timed out. killing."); | |
4244 | ||
4245 | if (s->clean_result == SERVICE_SUCCESS) | |
4246 | s->clean_result = SERVICE_FAILURE_TIMEOUT; | |
4247 | ||
4248 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, 0); | |
4249 | break; | |
4250 | ||
034c6ed7 | 4251 | default: |
04499a70 | 4252 | assert_not_reached(); |
034c6ed7 | 4253 | } |
718db961 LP |
4254 | |
4255 | return 0; | |
4256 | } | |
4257 | ||
4258 | static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata) { | |
4259 | Service *s = SERVICE(userdata); | |
2787d83c | 4260 | usec_t watchdog_usec; |
718db961 LP |
4261 | |
4262 | assert(s); | |
4263 | assert(source == s->watchdog_event_source); | |
4264 | ||
2787d83c M |
4265 | watchdog_usec = service_get_watchdog_usec(s); |
4266 | ||
2a12e32e JK |
4267 | if (UNIT(s)->manager->service_watchdogs) { |
4268 | log_unit_error(UNIT(s), "Watchdog timeout (limit %s)!", | |
5291f26d | 4269 | FORMAT_TIMESPAN(watchdog_usec, 1)); |
8bb2d17d | 4270 | |
c87700a1 | 4271 | service_enter_signal(s, SERVICE_STOP_WATCHDOG, SERVICE_FAILURE_WATCHDOG); |
2a12e32e JK |
4272 | } else |
4273 | log_unit_warning(UNIT(s), "Watchdog disabled! Ignoring watchdog timeout (limit %s)!", | |
5291f26d | 4274 | FORMAT_TIMESPAN(watchdog_usec, 1)); |
842129f5 | 4275 | |
718db961 | 4276 | return 0; |
5cb5a6ff LP |
4277 | } |
4278 | ||
fcee2755 | 4279 | static bool service_notify_message_authorized(Service *s, pid_t pid, FDSet *fds) { |
e3285237 | 4280 | assert(s); |
8c47c732 | 4281 | |
19dff691 MY |
4282 | NotifyAccess notify_access = service_get_notify_access(s); |
4283 | ||
4284 | if (notify_access == NOTIFY_NONE) { | |
e3285237 LP |
4285 | log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception is disabled.", pid); |
4286 | return false; | |
4287 | } | |
4288 | ||
c79ab77c LP |
4289 | if (notify_access == NOTIFY_MAIN && pid != s->main_pid.pid) { |
4290 | if (pidref_is_set(&s->main_pid)) | |
4291 | 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.pid); | |
336c6e46 | 4292 | else |
e3285237 LP |
4293 | 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); |
4294 | ||
4295 | return false; | |
4296 | } | |
4297 | ||
c79ab77c LP |
4298 | if (notify_access == NOTIFY_EXEC && pid != s->main_pid.pid && pid != s->control_pid.pid) { |
4299 | if (pidref_is_set(&s->main_pid) && pidref_is_set(&s->control_pid)) | |
e3285237 | 4300 | 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, |
c79ab77c LP |
4301 | pid, s->main_pid.pid, s->control_pid.pid); |
4302 | else if (pidref_is_set(&s->main_pid)) | |
4303 | 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.pid); | |
4304 | else if (pidref_is_set(&s->control_pid)) | |
4305 | 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.pid); | |
6375bd20 | 4306 | else |
e3285237 LP |
4307 | 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); |
4308 | ||
4309 | return false; | |
9711848f LP |
4310 | } |
4311 | ||
e3285237 LP |
4312 | return true; |
4313 | } | |
4314 | ||
99b43caf JK |
4315 | static void service_force_watchdog(Service *s) { |
4316 | if (!UNIT(s)->manager->service_watchdogs) | |
4317 | return; | |
4318 | ||
4319 | log_unit_error(UNIT(s), "Watchdog request (last status: %s)!", | |
1da3cb81 | 4320 | s->status_text ?: "<unset>"); |
99b43caf JK |
4321 | |
4322 | service_enter_signal(s, SERVICE_STOP_WATCHDOG, SERVICE_FAILURE_WATCHDOG); | |
4323 | } | |
4324 | ||
db256aab LP |
4325 | static void service_notify_message( |
4326 | Unit *u, | |
4327 | const struct ucred *ucred, | |
fcee2755 | 4328 | char * const *tags, |
db256aab LP |
4329 | FDSet *fds) { |
4330 | ||
e3285237 LP |
4331 | Service *s = SERVICE(u); |
4332 | bool notify_dbus = false; | |
3bd28bf7 | 4333 | usec_t monotonic_usec = USEC_INFINITY; |
e3285237 | 4334 | const char *e; |
db256aab | 4335 | int r; |
e3285237 LP |
4336 | |
4337 | assert(u); | |
db256aab | 4338 | assert(ucred); |
e3285237 | 4339 | |
19dff691 | 4340 | if (!service_notify_message_authorized(s, ucred->pid, fds)) |
e3285237 LP |
4341 | return; |
4342 | ||
f1d34068 | 4343 | if (DEBUG_LOGGING) { |
9711848f LP |
4344 | _cleanup_free_ char *cc = NULL; |
4345 | ||
4346 | cc = strv_join(tags, ", "); | |
0964cfb0 | 4347 | log_unit_debug(u, "Got notification message from PID "PID_FMT" (%s)", ucred->pid, empty_to_na(cc)); |
9711848f | 4348 | } |
c952c6ec | 4349 | |
8c47c732 | 4350 | /* Interpret MAINPID= */ |
28849dba | 4351 | e = strv_find_startswith(tags, "MAINPID="); |
3bd28bf7 | 4352 | if (e && IN_SET(s->state, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD, SERVICE_RELOAD_SIGNAL, SERVICE_RELOAD_NOTIFY)) { |
495e75ed | 4353 | _cleanup_(pidref_done) PidRef new_main_pid = PIDREF_NULL; |
db256aab | 4354 | |
495e75ed LP |
4355 | r = pidref_set_pidstr(&new_main_pid, e); |
4356 | if (r < 0) | |
4357 | log_unit_warning_errno(u, r, "Failed to parse MAINPID=%s field in notification message, ignoring: %m", e); | |
4358 | else if (!s->main_pid_known || !pidref_equal(&new_main_pid, &s->main_pid)) { | |
db256aab | 4359 | |
495e75ed | 4360 | r = service_is_suitable_main_pid(s, &new_main_pid, LOG_WARNING); |
db256aab | 4361 | if (r == 0) { |
5238e957 | 4362 | /* The new main PID is a bit suspicious, which is OK if the sender is privileged. */ |
db256aab LP |
4363 | |
4364 | if (ucred->uid == 0) { | |
495e75ed | 4365 | 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.pid); |
db256aab LP |
4366 | r = 1; |
4367 | } else | |
495e75ed | 4368 | log_unit_debug(u, "New main PID "PID_FMT" does not belong to service, refusing.", new_main_pid.pid); |
db256aab LP |
4369 | } |
4370 | if (r > 0) { | |
495e75ed | 4371 | (void) service_set_main_pidref(s, &new_main_pid); |
cdc2af3e | 4372 | |
495e75ed | 4373 | r = unit_watch_pidref(UNIT(s), &s->main_pid, /* exclusive= */ false); |
cdc2af3e | 4374 | if (r < 0) |
495e75ed | 4375 | log_unit_warning_errno(UNIT(s), r, "Failed to watch new main PID "PID_FMT" for service: %m", s->main_pid.pid); |
cdc2af3e | 4376 | |
db256aab LP |
4377 | notify_dbus = true; |
4378 | } | |
8c47c732 LP |
4379 | } |
4380 | } | |
4381 | ||
3bd28bf7 LP |
4382 | /* Parse MONOTONIC_USEC= */ |
4383 | e = strv_find_startswith(tags, "MONOTONIC_USEC="); | |
4384 | if (e) { | |
4385 | r = safe_atou64(e, &monotonic_usec); | |
4386 | if (r < 0) | |
4387 | log_unit_warning_errno(u, r, "Failed to parse MONOTONIC_USEC= field in notification message, ignoring: %s", e); | |
4388 | } | |
308d72dc | 4389 | |
3bd28bf7 LP |
4390 | /* Interpret READY=/STOPPING=/RELOADING=. STOPPING= wins over the others, and READY= over RELOADING= */ |
4391 | if (strv_contains(tags, "STOPPING=1")) { | |
4392 | s->notify_state = NOTIFY_STOPPING; | |
308d72dc | 4393 | |
3bd28bf7 LP |
4394 | if (IN_SET(s->state, SERVICE_RUNNING, SERVICE_RELOAD_SIGNAL, SERVICE_RELOAD_NOTIFY)) |
4395 | service_enter_stop_by_notify(s); | |
308d72dc | 4396 | |
3bd28bf7 | 4397 | notify_dbus = true; |
308d72dc | 4398 | |
3bd28bf7 | 4399 | } else if (strv_contains(tags, "READY=1")) { |
308d72dc | 4400 | |
3bd28bf7 | 4401 | s->notify_state = NOTIFY_READY; |
308d72dc | 4402 | |
3bd28bf7 LP |
4403 | /* Type=notify services inform us about completed initialization with READY=1 */ |
4404 | if (IN_SET(s->type, SERVICE_NOTIFY, SERVICE_NOTIFY_RELOAD) && | |
4405 | s->state == SERVICE_START) | |
4406 | service_enter_start_post(s); | |
308d72dc | 4407 | |
3bd28bf7 LP |
4408 | /* Sending READY=1 while we are reloading informs us that the reloading is complete. */ |
4409 | if (s->state == SERVICE_RELOAD_NOTIFY) | |
4410 | service_enter_running(s, SERVICE_SUCCESS); | |
308d72dc | 4411 | |
3bd28bf7 LP |
4412 | /* Combined RELOADING=1 and READY=1? Then this is indication that the service started and |
4413 | * immediately finished reloading. */ | |
4414 | if (s->state == SERVICE_RELOAD_SIGNAL && | |
4415 | strv_contains(tags, "RELOADING=1") && | |
4416 | monotonic_usec != USEC_INFINITY && | |
4417 | monotonic_usec >= s->reload_begin_usec) { | |
4418 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
308d72dc | 4419 | |
3bd28bf7 LP |
4420 | /* Propagate a reload explicitly */ |
4421 | r = manager_propagate_reload(UNIT(s)->manager, UNIT(s), JOB_FAIL, &error); | |
4422 | if (r < 0) | |
4423 | log_unit_warning(UNIT(s), "Failed to schedule propagation of reload, ignoring: %s", bus_error_message(&error, r)); | |
308d72dc | 4424 | |
3bd28bf7 | 4425 | service_enter_running(s, SERVICE_SUCCESS); |
cc2b7b11 | 4426 | } |
3bd28bf7 LP |
4427 | |
4428 | notify_dbus = true; | |
4429 | ||
4430 | } else if (strv_contains(tags, "RELOADING=1")) { | |
4431 | ||
4432 | s->notify_state = NOTIFY_RELOADING; | |
4433 | ||
4434 | /* Sending RELOADING=1 after we send SIGHUP to request a reload will transition | |
4435 | * things to "reload-notify" state, where we'll wait for READY=1 to let us know the | |
4436 | * reload is done. Note that we insist on a timestamp being sent along here, so that | |
4437 | * we know for sure this is a reload cycle initiated *after* we sent the signal */ | |
4438 | if (s->state == SERVICE_RELOAD_SIGNAL && | |
4439 | monotonic_usec != USEC_INFINITY && | |
4440 | monotonic_usec >= s->reload_begin_usec) | |
4441 | /* Note, we don't call service_enter_reload_by_notify() here, because we | |
4442 | * don't need reload propagation nor do we want to restart the time-out. */ | |
4443 | service_set_state(s, SERVICE_RELOAD_NOTIFY); | |
4444 | ||
4445 | if (s->state == SERVICE_RUNNING) | |
4446 | service_enter_reload_by_notify(s); | |
4447 | ||
4448 | notify_dbus = true; | |
8c47c732 LP |
4449 | } |
4450 | ||
4451 | /* Interpret STATUS= */ | |
28849dba | 4452 | e = strv_find_startswith(tags, "STATUS="); |
7f110ff9 | 4453 | if (e) { |
28849dba | 4454 | _cleanup_free_ char *t = NULL; |
8c47c732 | 4455 | |
28849dba | 4456 | if (!isempty(e)) { |
3eac1bca LP |
4457 | /* Note that this size limit check is mostly paranoia: since the datagram size we are willing |
4458 | * to process is already limited to NOTIFY_BUFFER_MAX, this limit here should never be hit. */ | |
4459 | if (strlen(e) > STATUS_TEXT_MAX) | |
4460 | log_unit_warning(u, "Status message overly long (%zu > %u), ignoring.", strlen(e), STATUS_TEXT_MAX); | |
4461 | else if (!utf8_is_valid(e)) | |
4462 | log_unit_warning(u, "Status message in notification message is not UTF-8 clean, ignoring."); | |
28849dba | 4463 | else { |
28849dba LP |
4464 | t = strdup(e); |
4465 | if (!t) | |
4466 | log_oom(); | |
3a2776bc | 4467 | } |
28849dba | 4468 | } |
8c47c732 | 4469 | |
30b5275a | 4470 | if (!streq_ptr(s->status_text, t)) { |
3b319885 | 4471 | free_and_replace(s->status_text, t); |
30b5275a | 4472 | notify_dbus = true; |
28849dba | 4473 | } |
8c47c732 | 4474 | } |
842129f5 | 4475 | |
19dff691 MY |
4476 | /* Interpret NOTIFYACCESS= */ |
4477 | e = strv_find_startswith(tags, "NOTIFYACCESS="); | |
4478 | if (e) { | |
4479 | NotifyAccess notify_access; | |
4480 | ||
4481 | notify_access = notify_access_from_string(e); | |
4482 | if (notify_access < 0) | |
4483 | log_unit_warning_errno(u, notify_access, | |
4484 | "Failed to parse NOTIFYACCESS= field value '%s' in notification message, ignoring: %m", e); | |
4485 | ||
4486 | /* We don't need to check whether the new access mode is more strict than what is | |
4487 | * already in use, since only the privileged process is allowed to change it | |
4488 | * in the first place. */ | |
4489 | if (service_get_notify_access(s) != notify_access) { | |
4490 | service_override_notify_access(s, notify_access); | |
4491 | notify_dbus = true; | |
4492 | } | |
4493 | } | |
4494 | ||
4774e357 | 4495 | /* Interpret ERRNO= */ |
28849dba | 4496 | e = strv_find_startswith(tags, "ERRNO="); |
4774e357 MAA |
4497 | if (e) { |
4498 | int status_errno; | |
4499 | ||
2fa40742 LP |
4500 | status_errno = parse_errno(e); |
4501 | if (status_errno < 0) | |
4502 | log_unit_warning_errno(u, status_errno, | |
5e1ee764 | 4503 | "Failed to parse ERRNO= field value '%s' in notification message: %m", e); |
2fa40742 LP |
4504 | else if (s->status_errno != status_errno) { |
4505 | s->status_errno = status_errno; | |
4506 | notify_dbus = true; | |
4774e357 MAA |
4507 | } |
4508 | } | |
4509 | ||
a327431b DB |
4510 | /* Interpret EXTEND_TIMEOUT= */ |
4511 | e = strv_find_startswith(tags, "EXTEND_TIMEOUT_USEC="); | |
4512 | if (e) { | |
4513 | usec_t extend_timeout_usec; | |
4514 | if (safe_atou64(e, &extend_timeout_usec) < 0) | |
4515 | log_unit_warning(u, "Failed to parse EXTEND_TIMEOUT_USEC=%s", e); | |
4516 | else | |
4517 | service_extend_timeout(s, extend_timeout_usec); | |
4518 | } | |
4519 | ||
6f285378 | 4520 | /* Interpret WATCHDOG= */ |
99b43caf JK |
4521 | e = strv_find_startswith(tags, "WATCHDOG="); |
4522 | if (e) { | |
4523 | if (streq(e, "1")) | |
4524 | service_reset_watchdog(s); | |
4525 | else if (streq(e, "trigger")) | |
4526 | service_force_watchdog(s); | |
4527 | else | |
4528 | log_unit_warning(u, "Passed WATCHDOG= field is invalid, ignoring."); | |
4529 | } | |
c4e2ceae | 4530 | |
c45d11cb LP |
4531 | e = strv_find_startswith(tags, "WATCHDOG_USEC="); |
4532 | if (e) { | |
4533 | usec_t watchdog_override_usec; | |
4534 | if (safe_atou64(e, &watchdog_override_usec) < 0) | |
4535 | log_unit_warning(u, "Failed to parse WATCHDOG_USEC=%s", e); | |
4536 | else | |
95d0d8ed | 4537 | service_override_watchdog_timeout(s, watchdog_override_usec); |
c45d11cb LP |
4538 | } |
4539 | ||
e78ee06d LP |
4540 | /* Process FD store messages. Either FDSTOREREMOVE=1 for removal, or FDSTORE=1 for addition. In both cases, |
4541 | * process FDNAME= for picking the file descriptor name to use. Note that FDNAME= is required when removing | |
4542 | * fds, but optional when pushing in new fds, for compatibility reasons. */ | |
d29cc4d6 | 4543 | if (strv_contains(tags, "FDSTOREREMOVE=1")) { |
e78ee06d LP |
4544 | const char *name; |
4545 | ||
4546 | name = strv_find_startswith(tags, "FDNAME="); | |
4547 | if (!name || !fdname_is_valid(name)) | |
4548 | log_unit_warning(u, "FDSTOREREMOVE=1 requested, but no valid file descriptor name passed, ignoring."); | |
4549 | else | |
4550 | service_remove_fd_store(s, name); | |
4551 | ||
d29cc4d6 | 4552 | } else if (strv_contains(tags, "FDSTORE=1")) { |
8dd4c05b LP |
4553 | const char *name; |
4554 | ||
4555 | name = strv_find_startswith(tags, "FDNAME="); | |
4556 | if (name && !fdname_is_valid(name)) { | |
4557 | log_unit_warning(u, "Passed FDNAME= name is invalid, ignoring."); | |
4558 | name = NULL; | |
4559 | } | |
4560 | ||
cb5a46b8 | 4561 | (void) service_add_fd_store_set(s, fds, name, !strv_contains(tags, "FDPOLL=0")); |
8dd4c05b | 4562 | } |
a354329f | 4563 | |
c4e2ceae | 4564 | /* Notify clients about changed status or main pid */ |
30b5275a LP |
4565 | if (notify_dbus) |
4566 | unit_add_to_dbus_queue(u); | |
8c47c732 LP |
4567 | } |
4568 | ||
7a7821c8 | 4569 | static int service_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 4570 | Service *s = SERVICE(u); |
7a7821c8 | 4571 | uint64_t t; |
68db7a3b ZJS |
4572 | int r; |
4573 | ||
4574 | if (!s->timer_event_source) | |
4575 | return 0; | |
4576 | ||
7a7821c8 | 4577 | r = sd_event_source_get_time(s->timer_event_source, &t); |
68db7a3b ZJS |
4578 | if (r < 0) |
4579 | return r; | |
7a7821c8 LP |
4580 | if (t == USEC_INFINITY) |
4581 | return 0; | |
68db7a3b | 4582 | |
7a7821c8 | 4583 | *timeout = t; |
68db7a3b ZJS |
4584 | return 1; |
4585 | } | |
4586 | ||
f5a9d2ee | 4587 | static usec_t service_get_timeout_start_usec(Unit *u) { |
4588 | Service *s = SERVICE(ASSERT_PTR(u)); | |
4589 | return s->timeout_start_usec; | |
4590 | } | |
4591 | ||
e39eb045 LP |
4592 | static bool pick_up_pid_from_bus_name(Service *s) { |
4593 | assert(s); | |
4594 | ||
4595 | /* If the service is running but we have no main PID yet, get it from the owner of the D-Bus name */ | |
4596 | ||
c79ab77c | 4597 | return !pidref_is_set(&s->main_pid) && |
e39eb045 LP |
4598 | IN_SET(s->state, |
4599 | SERVICE_START, | |
4600 | SERVICE_START_POST, | |
4601 | SERVICE_RUNNING, | |
3bd28bf7 LP |
4602 | SERVICE_RELOAD, |
4603 | SERVICE_RELOAD_SIGNAL, | |
4604 | SERVICE_RELOAD_NOTIFY); | |
e39eb045 LP |
4605 | } |
4606 | ||
4607 | static int bus_name_pid_lookup_callback(sd_bus_message *reply, void *userdata, sd_bus_error *ret_error) { | |
495e75ed | 4608 | _cleanup_(pidref_done) PidRef pidref = PIDREF_NULL; |
e39eb045 | 4609 | const sd_bus_error *e; |
99534007 | 4610 | Unit *u = ASSERT_PTR(userdata); |
e39eb045 LP |
4611 | uint32_t pid; |
4612 | Service *s; | |
4613 | int r; | |
4614 | ||
4615 | assert(reply); | |
e39eb045 LP |
4616 | |
4617 | s = SERVICE(u); | |
4618 | s->bus_name_pid_lookup_slot = sd_bus_slot_unref(s->bus_name_pid_lookup_slot); | |
4619 | ||
4620 | if (!s->bus_name || !pick_up_pid_from_bus_name(s)) | |
4621 | return 1; | |
4622 | ||
4623 | e = sd_bus_message_get_error(reply); | |
4624 | if (e) { | |
4625 | r = sd_bus_error_get_errno(e); | |
4626 | log_warning_errno(r, "GetConnectionUnixProcessID() failed: %s", bus_error_message(e, r)); | |
4627 | return 1; | |
4628 | } | |
4629 | ||
4630 | r = sd_bus_message_read(reply, "u", &pid); | |
4631 | if (r < 0) { | |
4632 | bus_log_parse_error(r); | |
4633 | return 1; | |
4634 | } | |
4635 | ||
495e75ed LP |
4636 | r = pidref_set_pid(&pidref, pid); |
4637 | if (r < 0) { | |
4638 | log_debug_errno(r, "GetConnectionUnixProcessID() returned invalid PID: %m"); | |
e39eb045 LP |
4639 | return 1; |
4640 | } | |
4641 | ||
495e75ed | 4642 | log_unit_debug(u, "D-Bus name %s is now owned by process " PID_FMT, s->bus_name, pidref.pid); |
e39eb045 | 4643 | |
495e75ed LP |
4644 | (void) service_set_main_pidref(s, &pidref); |
4645 | (void) unit_watch_pidref(UNIT(s), &s->main_pid, /* exclusive= */ false); | |
e39eb045 LP |
4646 | return 1; |
4647 | } | |
4648 | ||
fc67a943 | 4649 | static void service_bus_name_owner_change(Unit *u, const char *new_owner) { |
05e343b7 LP |
4650 | |
4651 | Service *s = SERVICE(u); | |
718db961 | 4652 | int r; |
05e343b7 LP |
4653 | |
4654 | assert(s); | |
05e343b7 | 4655 | |
fc67a943 LP |
4656 | if (new_owner) |
4657 | log_unit_debug(u, "D-Bus name %s now owned by %s", s->bus_name, new_owner); | |
05e343b7 | 4658 | else |
fc67a943 | 4659 | log_unit_debug(u, "D-Bus name %s now not owned by anyone.", s->bus_name); |
05e343b7 | 4660 | |
d7a0f1f4 | 4661 | s->bus_name_good = new_owner; |
05e343b7 | 4662 | |
d8ccf5fd DM |
4663 | /* Track the current owner, so we can reconstruct changes after a daemon reload */ |
4664 | r = free_and_strdup(&s->bus_name_owner, new_owner); | |
4665 | if (r < 0) { | |
4666 | log_unit_error_errno(u, r, "Unable to set new bus name owner %s: %m", new_owner); | |
4667 | return; | |
4668 | } | |
4669 | ||
05e343b7 LP |
4670 | if (s->type == SERVICE_DBUS) { |
4671 | ||
4672 | /* service_enter_running() will figure out what to | |
4673 | * do */ | |
4674 | if (s->state == SERVICE_RUNNING) | |
f42806df | 4675 | service_enter_running(s, SERVICE_SUCCESS); |
05e343b7 LP |
4676 | else if (s->state == SERVICE_START && new_owner) |
4677 | service_enter_start_post(s); | |
4678 | ||
e39eb045 | 4679 | } else if (new_owner && pick_up_pid_from_bus_name(s)) { |
05e343b7 | 4680 | |
718db961 | 4681 | /* Try to acquire PID from bus service */ |
05e343b7 | 4682 | |
e39eb045 LP |
4683 | s->bus_name_pid_lookup_slot = sd_bus_slot_unref(s->bus_name_pid_lookup_slot); |
4684 | ||
4685 | r = sd_bus_call_method_async( | |
4686 | u->manager->api_bus, | |
4687 | &s->bus_name_pid_lookup_slot, | |
4688 | "org.freedesktop.DBus", | |
4689 | "/org/freedesktop/DBus", | |
4690 | "org.freedesktop.DBus", | |
4691 | "GetConnectionUnixProcessID", | |
4692 | bus_name_pid_lookup_callback, | |
4693 | s, | |
4694 | "s", | |
4695 | s->bus_name); | |
4696 | if (r < 0) | |
4697 | log_debug_errno(r, "Failed to request owner PID of service name, ignoring: %m"); | |
7400b9d2 | 4698 | } |
05e343b7 LP |
4699 | } |
4700 | ||
3fabebf4 LP |
4701 | int service_set_socket_fd( |
4702 | Service *s, | |
4703 | int fd, | |
4704 | Socket *sock, | |
4705 | SocketPeer *peer, | |
4706 | bool selinux_context_net) { | |
4707 | ||
4708 | _cleanup_free_ char *peer_text = NULL; | |
79a98c60 | 4709 | int r; |
57020a3a | 4710 | |
4f2d528d LP |
4711 | assert(s); |
4712 | assert(fd >= 0); | |
4713 | ||
7f2fbbff LP |
4714 | /* This is called by the socket code when instantiating a new service for a stream socket and the socket needs |
4715 | * to be configured. We take ownership of the passed fd on success. */ | |
4f2d528d | 4716 | |
1124fe6f | 4717 | if (UNIT(s)->load_state != UNIT_LOADED) |
4f2d528d LP |
4718 | return -EINVAL; |
4719 | ||
4720 | if (s->socket_fd >= 0) | |
4721 | return -EBUSY; | |
4722 | ||
3fabebf4 LP |
4723 | assert(!s->socket_peer); |
4724 | ||
b9c1883a | 4725 | if (!IN_SET(s->state, SERVICE_DEAD, SERVICE_DEAD_RESOURCES_PINNED)) |
4f2d528d LP |
4726 | return -EAGAIN; |
4727 | ||
3fabebf4 | 4728 | if (getpeername_pretty(fd, true, &peer_text) >= 0) { |
79a98c60 LP |
4729 | |
4730 | if (UNIT(s)->description) { | |
c2b2df60 | 4731 | _cleanup_free_ char *a = NULL; |
79a98c60 | 4732 | |
3fabebf4 | 4733 | a = strjoin(UNIT(s)->description, " (", peer_text, ")"); |
79a98c60 LP |
4734 | if (!a) |
4735 | return -ENOMEM; | |
4736 | ||
4737 | r = unit_set_description(UNIT(s), a); | |
4738 | } else | |
3fabebf4 | 4739 | r = unit_set_description(UNIT(s), peer_text); |
79a98c60 LP |
4740 | if (r < 0) |
4741 | return r; | |
4742 | } | |
4743 | ||
eef85c4a | 4744 | r = unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false, UNIT_DEPENDENCY_IMPLICIT); |
7f2fbbff LP |
4745 | if (r < 0) |
4746 | return r; | |
4747 | ||
4f2d528d | 4748 | s->socket_fd = fd; |
3fabebf4 | 4749 | s->socket_peer = socket_peer_ref(peer); |
16115b0a | 4750 | s->socket_fd_selinux_context_net = selinux_context_net; |
6cf6bbc2 | 4751 | |
7f7d01ed | 4752 | unit_ref_set(&s->accept_socket, UNIT(s), UNIT(sock)); |
7f2fbbff | 4753 | return 0; |
4f2d528d LP |
4754 | } |
4755 | ||
fdf20a31 | 4756 | static void service_reset_failed(Unit *u) { |
5632e374 LP |
4757 | Service *s = SERVICE(u); |
4758 | ||
4759 | assert(s); | |
4760 | ||
fdf20a31 | 4761 | if (s->state == SERVICE_FAILED) |
b9c1883a | 4762 | service_set_state(s, service_determine_dead_state(s)); |
5632e374 | 4763 | |
f42806df LP |
4764 | s->result = SERVICE_SUCCESS; |
4765 | s->reload_result = SERVICE_SUCCESS; | |
4c2f5842 | 4766 | s->clean_result = SERVICE_SUCCESS; |
7a0019d3 LP |
4767 | s->n_restarts = 0; |
4768 | s->flush_n_restarts = false; | |
5632e374 LP |
4769 | } |
4770 | ||
3e22239d YW |
4771 | static PidRef* service_main_pid(Unit *u, bool *ret_is_alien) { |
4772 | Service *s = ASSERT_PTR(SERVICE(u)); | |
4773 | ||
4774 | if (ret_is_alien) | |
4775 | *ret_is_alien = s->main_pid_alien; | |
4776 | ||
4777 | return &s->main_pid; | |
291d565a LP |
4778 | } |
4779 | ||
37eb258e LP |
4780 | static PidRef* service_control_pid(Unit *u) { |
4781 | return &ASSERT_PTR(SERVICE(u))->control_pid; | |
291d565a LP |
4782 | } |
4783 | ||
bb2c7685 LP |
4784 | static bool service_needs_console(Unit *u) { |
4785 | Service *s = SERVICE(u); | |
4786 | ||
4787 | assert(s); | |
4788 | ||
4789 | /* We provide our own implementation of this here, instead of relying of the generic implementation | |
4790 | * unit_needs_console() provides, since we want to return false if we are in SERVICE_EXITED state. */ | |
4791 | ||
4792 | if (!exec_context_may_touch_console(&s->exec_context)) | |
4793 | return false; | |
4794 | ||
4795 | return IN_SET(s->state, | |
31cd5f63 | 4796 | SERVICE_CONDITION, |
bb2c7685 LP |
4797 | SERVICE_START_PRE, |
4798 | SERVICE_START, | |
4799 | SERVICE_START_POST, | |
4800 | SERVICE_RUNNING, | |
4801 | SERVICE_RELOAD, | |
3bd28bf7 LP |
4802 | SERVICE_RELOAD_SIGNAL, |
4803 | SERVICE_RELOAD_NOTIFY, | |
bb2c7685 | 4804 | SERVICE_STOP, |
c87700a1 | 4805 | SERVICE_STOP_WATCHDOG, |
bb2c7685 LP |
4806 | SERVICE_STOP_SIGTERM, |
4807 | SERVICE_STOP_SIGKILL, | |
4808 | SERVICE_STOP_POST, | |
bf760801 | 4809 | SERVICE_FINAL_WATCHDOG, |
bb2c7685 LP |
4810 | SERVICE_FINAL_SIGTERM, |
4811 | SERVICE_FINAL_SIGKILL); | |
4812 | } | |
4813 | ||
7af67e9a LP |
4814 | static int service_exit_status(Unit *u) { |
4815 | Service *s = SERVICE(u); | |
4816 | ||
4817 | assert(u); | |
4818 | ||
4819 | if (s->main_exec_status.pid <= 0 || | |
4820 | !dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) | |
4821 | return -ENODATA; | |
4822 | ||
4823 | if (s->main_exec_status.code != CLD_EXITED) | |
4824 | return -EBADE; | |
4825 | ||
4826 | return s->main_exec_status.status; | |
4827 | } | |
4828 | ||
5e1669ff ZJS |
4829 | static const char* service_status_text(Unit *u) { |
4830 | Service *s = SERVICE(u); | |
4831 | ||
4832 | assert(s); | |
4833 | ||
4834 | return s->status_text; | |
4835 | } | |
4836 | ||
4c2f5842 LP |
4837 | static int service_clean(Unit *u, ExecCleanMask mask) { |
4838 | _cleanup_strv_free_ char **l = NULL; | |
4fb8f1e8 | 4839 | bool may_clean_fdstore = false; |
4c2f5842 | 4840 | Service *s = SERVICE(u); |
4c2f5842 LP |
4841 | int r; |
4842 | ||
4843 | assert(s); | |
4844 | assert(mask != 0); | |
4845 | ||
4fb8f1e8 | 4846 | if (!IN_SET(s->state, SERVICE_DEAD, SERVICE_DEAD_RESOURCES_PINNED)) |
4c2f5842 LP |
4847 | return -EBUSY; |
4848 | ||
4fb8f1e8 | 4849 | /* Determine if there's anything we could potentially clean */ |
4c2f5842 LP |
4850 | r = exec_context_get_clean_directories(&s->exec_context, u->manager->prefix, mask, &l); |
4851 | if (r < 0) | |
4852 | return r; | |
4853 | ||
4fb8f1e8 LP |
4854 | if (mask & EXEC_CLEAN_FDSTORE) |
4855 | may_clean_fdstore = s->n_fd_store > 0 || s->n_fd_store_max > 0; | |
4856 | ||
4857 | if (strv_isempty(l) && !may_clean_fdstore) | |
4858 | return -EUNATCH; /* Nothing to potentially clean */ | |
4859 | ||
4860 | /* Let's clean the stuff we can clean quickly */ | |
4861 | if (may_clean_fdstore) | |
4862 | service_release_fd_store(s); | |
4863 | ||
4864 | /* If we are done, leave quickly */ | |
4865 | if (strv_isempty(l)) { | |
4866 | if (s->state == SERVICE_DEAD_RESOURCES_PINNED && !s->fd_store) | |
4867 | service_set_state(s, SERVICE_DEAD); | |
4868 | return 0; | |
4869 | } | |
4c2f5842 | 4870 | |
4fb8f1e8 | 4871 | /* We need to clean disk stuff. This is slow, hence do it out of process, and change state */ |
4c2f5842 LP |
4872 | service_unwatch_control_pid(s); |
4873 | s->clean_result = SERVICE_SUCCESS; | |
4874 | s->control_command = NULL; | |
4875 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
4876 | ||
e5d6dcce | 4877 | r = service_arm_timer(s, /* relative= */ true, s->exec_context.timeout_clean_usec); |
10691b9e LP |
4878 | if (r < 0) { |
4879 | log_unit_warning_errno(u, r, "Failed to install timer: %m"); | |
4c2f5842 | 4880 | goto fail; |
10691b9e | 4881 | } |
4c2f5842 | 4882 | |
4775b55d | 4883 | r = unit_fork_and_watch_rm_rf(u, l, &s->control_pid); |
10691b9e LP |
4884 | if (r < 0) { |
4885 | log_unit_warning_errno(u, r, "Failed to spawn cleaning task: %m"); | |
c79ab77c | 4886 | goto fail; |
10691b9e | 4887 | } |
4c2f5842 | 4888 | |
c79ab77c | 4889 | service_set_state(s, SERVICE_CLEANING); |
4c2f5842 LP |
4890 | return 0; |
4891 | ||
4892 | fail: | |
4c2f5842 | 4893 | s->clean_result = SERVICE_FAILURE_RESOURCES; |
5dcadb4c | 4894 | s->timer_event_source = sd_event_source_disable_unref(s->timer_event_source); |
4c2f5842 LP |
4895 | return r; |
4896 | } | |
4897 | ||
4898 | static int service_can_clean(Unit *u, ExecCleanMask *ret) { | |
4899 | Service *s = SERVICE(u); | |
4fb8f1e8 LP |
4900 | ExecCleanMask mask = 0; |
4901 | int r; | |
4c2f5842 LP |
4902 | |
4903 | assert(s); | |
4fb8f1e8 LP |
4904 | assert(ret); |
4905 | ||
4906 | r = exec_context_get_clean_mask(&s->exec_context, &mask); | |
4907 | if (r < 0) | |
4908 | return r; | |
4c2f5842 | 4909 | |
4fb8f1e8 LP |
4910 | if (s->n_fd_store_max > 0) |
4911 | mask |= EXEC_CLEAN_FDSTORE; | |
4912 | ||
4913 | *ret = mask; | |
4914 | return 0; | |
4c2f5842 LP |
4915 | } |
4916 | ||
eda0cbf0 | 4917 | static const char *service_finished_job(Unit *u, JobType t, JobResult result) { |
04d232d8 ZJS |
4918 | if (t == JOB_START && |
4919 | result == JOB_DONE && | |
4920 | SERVICE(u)->type == SERVICE_ONESHOT) | |
4921 | return "Finished %s."; | |
eda0cbf0 ZJS |
4922 | |
4923 | /* Fall back to generic */ | |
4924 | return NULL; | |
4925 | } | |
4926 | ||
705578c3 | 4927 | static int service_can_start(Unit *u) { |
9727f242 DDM |
4928 | Service *s = SERVICE(u); |
4929 | int r; | |
4930 | ||
4931 | assert(s); | |
4932 | ||
4933 | /* Make sure we don't enter a busy loop of some kind. */ | |
4934 | r = unit_test_start_limit(u); | |
4935 | if (r < 0) { | |
4936 | service_enter_dead(s, SERVICE_FAILURE_START_LIMIT_HIT, false); | |
4937 | return r; | |
4938 | } | |
4939 | ||
705578c3 | 4940 | return 1; |
9727f242 DDM |
4941 | } |
4942 | ||
c25fac9a LP |
4943 | static void service_release_resources(Unit *u) { |
4944 | Service *s = SERVICE(ASSERT_PTR(u)); | |
4945 | ||
4946 | /* Invoked by the unit state engine, whenever it realizes that unit is dead and there's no job | |
4947 | * anymore for it, and it hence is a good idea to release resources */ | |
4948 | ||
4949 | /* Don't release resources if this is a transitionary failed/dead state | |
4950 | * (i.e. SERVICE_DEAD_BEFORE_AUTO_RESTART/SERVICE_FAILED_BEFORE_AUTO_RESTART), insist on a permanent | |
4951 | * failure state. */ | |
b9c1883a | 4952 | if (!IN_SET(s->state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_DEAD_RESOURCES_PINNED)) |
c25fac9a LP |
4953 | return; |
4954 | ||
4955 | log_unit_debug(u, "Releasing resources..."); | |
4956 | ||
81a1d6d6 | 4957 | service_release_socket_fd(s); |
c25fac9a | 4958 | service_release_stdio_fd(s); |
b9c1883a LP |
4959 | |
4960 | if (s->fd_store_preserve_mode != EXEC_PRESERVE_YES) | |
4961 | service_release_fd_store(s); | |
4962 | ||
4963 | if (s->state == SERVICE_DEAD_RESOURCES_PINNED && !s->fd_store) | |
4964 | service_set_state(s, SERVICE_DEAD); | |
c25fac9a LP |
4965 | } |
4966 | ||
8017ed7e LP |
4967 | int service_determine_exec_selinux_label(Service *s, char **ret) { |
4968 | int r; | |
4969 | ||
4970 | assert(s); | |
4971 | assert(ret); | |
4972 | ||
4973 | if (!mac_selinux_use()) | |
4974 | return -ENODATA; | |
4975 | ||
4976 | /* Returns the SELinux label used for execution of the main service binary */ | |
4977 | ||
4978 | if (s->exec_context.selinux_context) { /* Prefer the explicitly configured label if there is one */ | |
4979 | char *con = strdup(s->exec_context.selinux_context); | |
4980 | if (!con) | |
4981 | return -ENOMEM; | |
4982 | ||
4983 | *ret = con; | |
4984 | return 0; | |
4985 | } | |
4986 | ||
4987 | if (s->exec_context.root_image || | |
4988 | s->exec_context.n_extension_images > 0 || | |
4989 | !strv_isempty(s->exec_context.extension_directories)) /* We cannot chase paths through images */ | |
4990 | return log_unit_debug_errno(UNIT(s), SYNTHETIC_ERRNO(ENODATA), "Service with RootImage=, ExtensionImages= or ExtensionDirectories= set, cannot determine socket SELinux label before activation, ignoring."); | |
4991 | ||
4992 | ExecCommand *c = s->exec_command[SERVICE_EXEC_START]; | |
4993 | if (!c) | |
4994 | return -ENODATA; | |
4995 | ||
4996 | _cleanup_free_ char *path = NULL; | |
4997 | r = chase(c->path, s->exec_context.root_directory, CHASE_PREFIX_ROOT, &path, NULL); | |
4998 | if (r < 0) { | |
4999 | log_unit_debug_errno(UNIT(s), r, "Failed to resolve service binary '%s', ignoring.", c->path); | |
5000 | return -ENODATA; | |
5001 | } | |
5002 | ||
5003 | r = mac_selinux_get_create_label_from_exe(path, ret); | |
5004 | if (ERRNO_IS_NEG_NOT_SUPPORTED(r)) { | |
5005 | log_unit_debug_errno(UNIT(s), r, "Reading SELinux label off binary '%s' is not supported, ignoring.", path); | |
5006 | return -ENODATA; | |
5007 | } | |
5008 | if (ERRNO_IS_NEG_PRIVILEGE(r)) { | |
5009 | log_unit_debug_errno(UNIT(s), r, "Can't read SELinux label off binary '%s', due to privileges, ignoring.", path); | |
5010 | return -ENODATA; | |
5011 | } | |
5012 | if (r < 0) | |
5013 | return log_unit_debug_errno(UNIT(s), r, "Failed to read SELinux label off binary '%s': %m", path); | |
5014 | ||
5015 | return 0; | |
5016 | } | |
5017 | ||
94f04347 | 5018 | static const char* const service_restart_table[_SERVICE_RESTART_MAX] = { |
48d83e33 ZJS |
5019 | [SERVICE_RESTART_NO] = "no", |
5020 | [SERVICE_RESTART_ON_SUCCESS] = "on-success", | |
5021 | [SERVICE_RESTART_ON_FAILURE] = "on-failure", | |
6cfe2fde | 5022 | [SERVICE_RESTART_ON_ABNORMAL] = "on-abnormal", |
dc99a976 | 5023 | [SERVICE_RESTART_ON_WATCHDOG] = "on-watchdog", |
48d83e33 ZJS |
5024 | [SERVICE_RESTART_ON_ABORT] = "on-abort", |
5025 | [SERVICE_RESTART_ALWAYS] = "always", | |
94f04347 LP |
5026 | }; |
5027 | ||
5028 | DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart); | |
5029 | ||
e568fea9 RP |
5030 | static const char* const service_restart_mode_table[_SERVICE_RESTART_MODE_MAX] = { |
5031 | [SERVICE_RESTART_MODE_NORMAL] = "normal", | |
5032 | [SERVICE_RESTART_MODE_DIRECT] = "direct", | |
5033 | }; | |
5034 | ||
5035 | DEFINE_STRING_TABLE_LOOKUP(service_restart_mode, ServiceRestartMode); | |
5036 | ||
94f04347 | 5037 | static const char* const service_type_table[_SERVICE_TYPE_MAX] = { |
3bd28bf7 LP |
5038 | [SERVICE_SIMPLE] = "simple", |
5039 | [SERVICE_FORKING] = "forking", | |
5040 | [SERVICE_ONESHOT] = "oneshot", | |
5041 | [SERVICE_DBUS] = "dbus", | |
5042 | [SERVICE_NOTIFY] = "notify", | |
5043 | [SERVICE_NOTIFY_RELOAD] = "notify-reload", | |
5044 | [SERVICE_IDLE] = "idle", | |
5045 | [SERVICE_EXEC] = "exec", | |
94f04347 LP |
5046 | }; |
5047 | ||
5048 | DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType); | |
5049 | ||
596e4470 | 5050 | static const char* const service_exit_type_table[_SERVICE_EXIT_TYPE_MAX] = { |
fb138166 | 5051 | [SERVICE_EXIT_MAIN] = "main", |
596e4470 HC |
5052 | [SERVICE_EXIT_CGROUP] = "cgroup", |
5053 | }; | |
5054 | ||
5055 | DEFINE_STRING_TABLE_LOOKUP(service_exit_type, ServiceExitType); | |
5056 | ||
e537352b | 5057 | static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = { |
48d83e33 ZJS |
5058 | [SERVICE_EXEC_CONDITION] = "ExecCondition", |
5059 | [SERVICE_EXEC_START_PRE] = "ExecStartPre", | |
5060 | [SERVICE_EXEC_START] = "ExecStart", | |
94f04347 | 5061 | [SERVICE_EXEC_START_POST] = "ExecStartPost", |
48d83e33 ZJS |
5062 | [SERVICE_EXEC_RELOAD] = "ExecReload", |
5063 | [SERVICE_EXEC_STOP] = "ExecStop", | |
5064 | [SERVICE_EXEC_STOP_POST] = "ExecStopPost", | |
94f04347 LP |
5065 | }; |
5066 | ||
5067 | DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand); | |
5068 | ||
b3d59367 | 5069 | static const char* const service_exec_ex_command_table[_SERVICE_EXEC_COMMAND_MAX] = { |
48d83e33 ZJS |
5070 | [SERVICE_EXEC_CONDITION] = "ExecConditionEx", |
5071 | [SERVICE_EXEC_START_PRE] = "ExecStartPreEx", | |
5072 | [SERVICE_EXEC_START] = "ExecStartEx", | |
b3d59367 | 5073 | [SERVICE_EXEC_START_POST] = "ExecStartPostEx", |
48d83e33 ZJS |
5074 | [SERVICE_EXEC_RELOAD] = "ExecReloadEx", |
5075 | [SERVICE_EXEC_STOP] = "ExecStopEx", | |
5076 | [SERVICE_EXEC_STOP_POST] = "ExecStopPostEx", | |
b3d59367 AZ |
5077 | }; |
5078 | ||
5079 | DEFINE_STRING_TABLE_LOOKUP(service_exec_ex_command, ServiceExecCommand); | |
5080 | ||
308d72dc | 5081 | static const char* const notify_state_table[_NOTIFY_STATE_MAX] = { |
48d83e33 ZJS |
5082 | [NOTIFY_UNKNOWN] = "unknown", |
5083 | [NOTIFY_READY] = "ready", | |
308d72dc | 5084 | [NOTIFY_RELOADING] = "reloading", |
48d83e33 | 5085 | [NOTIFY_STOPPING] = "stopping", |
308d72dc LP |
5086 | }; |
5087 | ||
5088 | DEFINE_STRING_TABLE_LOOKUP(notify_state, NotifyState); | |
5089 | ||
f42806df | 5090 | static const char* const service_result_table[_SERVICE_RESULT_MAX] = { |
48d83e33 ZJS |
5091 | [SERVICE_SUCCESS] = "success", |
5092 | [SERVICE_FAILURE_RESOURCES] = "resources", | |
5093 | [SERVICE_FAILURE_PROTOCOL] = "protocol", | |
5094 | [SERVICE_FAILURE_TIMEOUT] = "timeout", | |
5095 | [SERVICE_FAILURE_EXIT_CODE] = "exit-code", | |
5096 | [SERVICE_FAILURE_SIGNAL] = "signal", | |
5097 | [SERVICE_FAILURE_CORE_DUMP] = "core-dump", | |
5098 | [SERVICE_FAILURE_WATCHDOG] = "watchdog", | |
07299350 | 5099 | [SERVICE_FAILURE_START_LIMIT_HIT] = "start-limit-hit", |
48d83e33 ZJS |
5100 | [SERVICE_FAILURE_OOM_KILL] = "oom-kill", |
5101 | [SERVICE_SKIP_CONDITION] = "exec-condition", | |
f42806df LP |
5102 | }; |
5103 | ||
5104 | DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult); | |
5105 | ||
bf760801 JK |
5106 | static const char* const service_timeout_failure_mode_table[_SERVICE_TIMEOUT_FAILURE_MODE_MAX] = { |
5107 | [SERVICE_TIMEOUT_TERMINATE] = "terminate", | |
48d83e33 ZJS |
5108 | [SERVICE_TIMEOUT_ABORT] = "abort", |
5109 | [SERVICE_TIMEOUT_KILL] = "kill", | |
bf760801 JK |
5110 | }; |
5111 | ||
5112 | DEFINE_STRING_TABLE_LOOKUP(service_timeout_failure_mode, ServiceTimeoutFailureMode); | |
5113 | ||
87f0e418 | 5114 | const UnitVTable service_vtable = { |
7d17cfbc | 5115 | .object_size = sizeof(Service), |
718db961 LP |
5116 | .exec_context_offset = offsetof(Service, exec_context), |
5117 | .cgroup_context_offset = offsetof(Service, cgroup_context), | |
5118 | .kill_context_offset = offsetof(Service, kill_context), | |
613b411c | 5119 | .exec_runtime_offset = offsetof(Service, exec_runtime), |
3ef63c31 | 5120 | |
f975e971 LP |
5121 | .sections = |
5122 | "Unit\0" | |
5123 | "Service\0" | |
5124 | "Install\0", | |
4ad49000 | 5125 | .private_section = "Service", |
71645aca | 5126 | |
1d9cc876 LP |
5127 | .can_transient = true, |
5128 | .can_delegate = true, | |
c80a9a33 | 5129 | .can_fail = true, |
4d824a4e | 5130 | .can_set_managed_oom = true, |
1d9cc876 | 5131 | |
034c6ed7 LP |
5132 | .init = service_init, |
5133 | .done = service_done, | |
a16e1123 | 5134 | .load = service_load, |
a354329f | 5135 | .release_resources = service_release_resources, |
a16e1123 LP |
5136 | |
5137 | .coldplug = service_coldplug, | |
034c6ed7 | 5138 | |
5cb5a6ff LP |
5139 | .dump = service_dump, |
5140 | ||
5141 | .start = service_start, | |
5142 | .stop = service_stop, | |
5143 | .reload = service_reload, | |
5144 | ||
034c6ed7 LP |
5145 | .can_reload = service_can_reload, |
5146 | ||
4c2f5842 LP |
5147 | .clean = service_clean, |
5148 | .can_clean = service_can_clean, | |
8a0867d6 | 5149 | |
d9e45bc3 MS |
5150 | .freeze = unit_freeze_vtable_common, |
5151 | .thaw = unit_thaw_vtable_common, | |
5152 | ||
a16e1123 LP |
5153 | .serialize = service_serialize, |
5154 | .deserialize_item = service_deserialize_item, | |
5155 | ||
5cb5a6ff | 5156 | .active_state = service_active_state, |
10a94420 | 5157 | .sub_state_to_string = service_sub_state_to_string, |
5cb5a6ff | 5158 | |
deb4e708 MK |
5159 | .will_restart = service_will_restart, |
5160 | ||
f2f725e5 | 5161 | .may_gc = service_may_gc, |
701cc384 | 5162 | |
034c6ed7 | 5163 | .sigchld_event = service_sigchld_event, |
2c4104f0 | 5164 | |
fdf20a31 | 5165 | .reset_failed = service_reset_failed, |
5632e374 | 5166 | |
4ad49000 | 5167 | .notify_cgroup_empty = service_notify_cgroup_empty_event, |
afcfaa69 | 5168 | .notify_cgroup_oom = service_notify_cgroup_oom_event, |
8c47c732 | 5169 | .notify_message = service_notify_message, |
8e274523 | 5170 | |
291d565a LP |
5171 | .main_pid = service_main_pid, |
5172 | .control_pid = service_control_pid, | |
5173 | ||
05e343b7 | 5174 | .bus_name_owner_change = service_bus_name_owner_change, |
05e343b7 | 5175 | |
74c964d3 LP |
5176 | .bus_set_property = bus_service_set_property, |
5177 | .bus_commit_properties = bus_service_commit_properties, | |
4139c1b2 | 5178 | |
68db7a3b | 5179 | .get_timeout = service_get_timeout, |
f5a9d2ee | 5180 | .get_timeout_start_usec = service_get_timeout_start_usec, |
bb2c7685 | 5181 | .needs_console = service_needs_console, |
7af67e9a | 5182 | .exit_status = service_exit_status, |
5e1669ff | 5183 | .status_text = service_status_text, |
718db961 | 5184 | |
c6918296 | 5185 | .status_message_formats = { |
c6918296 | 5186 | .finished_start_job = { |
c6918296 | 5187 | [JOB_FAILED] = "Failed to start %s.", |
c6918296 MS |
5188 | }, |
5189 | .finished_stop_job = { | |
5190 | [JOB_DONE] = "Stopped %s.", | |
5191 | [JOB_FAILED] = "Stopped (with error) %s.", | |
c6918296 | 5192 | }, |
eda0cbf0 | 5193 | .finished_job = service_finished_job, |
c6918296 | 5194 | }, |
9727f242 | 5195 | |
705578c3 | 5196 | .can_start = service_can_start, |
d52b8493 | 5197 | |
b2bfd121 LP |
5198 | .notify_plymouth = true, |
5199 | ||
d52b8493 LP |
5200 | .audit_start_message_type = AUDIT_SERVICE_START, |
5201 | .audit_stop_message_type = AUDIT_SERVICE_STOP, | |
5cb5a6ff | 5202 | }; |