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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" |
93cb78ae | 27 | #include "io-util.h" |
4f5dd394 LP |
28 | #include "load-dropin.h" |
29 | #include "load-fragment.h" | |
30 | #include "log.h" | |
31 | #include "manager.h" | |
d52b8493 | 32 | #include "missing_audit.h" |
cd48e23f | 33 | #include "open-file.h" |
6bedfcbb | 34 | #include "parse-util.h" |
4f5dd394 | 35 | #include "path-util.h" |
0b452006 | 36 | #include "process-util.h" |
5918a933 | 37 | #include "random-util.h" |
8017ed7e | 38 | #include "selinux-util.h" |
d68c645b | 39 | #include "serialize.h" |
3ffd4af2 | 40 | #include "service.h" |
24882e06 | 41 | #include "signal-util.h" |
4f5dd394 | 42 | #include "special.h" |
e266c068 | 43 | #include "stdio-util.h" |
8b43440b | 44 | #include "string-table.h" |
07630cea | 45 | #include "string-util.h" |
4f5dd394 LP |
46 | #include "strv.h" |
47 | #include "unit-name.h" | |
4f5dd394 LP |
48 | #include "unit.h" |
49 | #include "utf8.h" | |
034c6ed7 | 50 | |
edbf8984 ZJS |
51 | #define service_spawn(...) service_spawn_internal(__func__, __VA_ARGS__) |
52 | ||
acbb0225 | 53 | static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = { |
17f6b640 YW |
54 | [SERVICE_DEAD] = UNIT_INACTIVE, |
55 | [SERVICE_CONDITION] = UNIT_ACTIVATING, | |
56 | [SERVICE_START_PRE] = UNIT_ACTIVATING, | |
57 | [SERVICE_START] = UNIT_ACTIVATING, | |
58 | [SERVICE_START_POST] = UNIT_ACTIVATING, | |
59 | [SERVICE_RUNNING] = UNIT_ACTIVE, | |
60 | [SERVICE_EXITED] = UNIT_ACTIVE, | |
61 | [SERVICE_RELOAD] = UNIT_RELOADING, | |
62 | [SERVICE_RELOAD_SIGNAL] = UNIT_RELOADING, | |
63 | [SERVICE_RELOAD_NOTIFY] = UNIT_RELOADING, | |
64 | [SERVICE_STOP] = UNIT_DEACTIVATING, | |
65 | [SERVICE_STOP_WATCHDOG] = UNIT_DEACTIVATING, | |
66 | [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, | |
67 | [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
68 | [SERVICE_STOP_POST] = UNIT_DEACTIVATING, | |
69 | [SERVICE_FINAL_WATCHDOG] = UNIT_DEACTIVATING, | |
70 | [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, | |
71 | [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
72 | [SERVICE_FAILED] = UNIT_FAILED, | |
73 | [SERVICE_DEAD_BEFORE_AUTO_RESTART] = UNIT_INACTIVE, | |
a1d31573 | 74 | [SERVICE_FAILED_BEFORE_AUTO_RESTART] = UNIT_FAILED, |
17f6b640 YW |
75 | [SERVICE_DEAD_RESOURCES_PINNED] = UNIT_INACTIVE, |
76 | [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING, | |
77 | [SERVICE_AUTO_RESTART_QUEUED] = UNIT_ACTIVATING, | |
78 | [SERVICE_CLEANING] = UNIT_MAINTENANCE, | |
034c6ed7 | 79 | }; |
5cb5a6ff | 80 | |
e056b01d LP |
81 | /* For Type=idle we never want to delay any other jobs, hence we |
82 | * consider idle jobs active as soon as we start working on them */ | |
83 | static const UnitActiveState state_translation_table_idle[_SERVICE_STATE_MAX] = { | |
17f6b640 YW |
84 | [SERVICE_DEAD] = UNIT_INACTIVE, |
85 | [SERVICE_CONDITION] = UNIT_ACTIVE, | |
86 | [SERVICE_START_PRE] = UNIT_ACTIVE, | |
87 | [SERVICE_START] = UNIT_ACTIVE, | |
88 | [SERVICE_START_POST] = UNIT_ACTIVE, | |
89 | [SERVICE_RUNNING] = UNIT_ACTIVE, | |
90 | [SERVICE_EXITED] = UNIT_ACTIVE, | |
91 | [SERVICE_RELOAD] = UNIT_RELOADING, | |
92 | [SERVICE_RELOAD_SIGNAL] = UNIT_RELOADING, | |
93 | [SERVICE_RELOAD_NOTIFY] = UNIT_RELOADING, | |
94 | [SERVICE_STOP] = UNIT_DEACTIVATING, | |
95 | [SERVICE_STOP_WATCHDOG] = UNIT_DEACTIVATING, | |
96 | [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, | |
97 | [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
98 | [SERVICE_STOP_POST] = UNIT_DEACTIVATING, | |
99 | [SERVICE_FINAL_WATCHDOG] = UNIT_DEACTIVATING, | |
100 | [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, | |
101 | [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
102 | [SERVICE_FAILED] = UNIT_FAILED, | |
103 | [SERVICE_DEAD_BEFORE_AUTO_RESTART] = UNIT_INACTIVE, | |
a1d31573 | 104 | [SERVICE_FAILED_BEFORE_AUTO_RESTART] = UNIT_FAILED, |
17f6b640 YW |
105 | [SERVICE_DEAD_RESOURCES_PINNED] = UNIT_INACTIVE, |
106 | [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING, | |
107 | [SERVICE_AUTO_RESTART_QUEUED] = UNIT_ACTIVATING, | |
108 | [SERVICE_CLEANING] = UNIT_MAINTENANCE, | |
e056b01d LP |
109 | }; |
110 | ||
5686391b | 111 | static int service_dispatch_inotify_io(sd_event_source *source, int fd, uint32_t events, void *userdata); |
718db961 LP |
112 | static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); |
113 | static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata); | |
5686391b | 114 | static int service_dispatch_exec_io(sd_event_source *source, int fd, uint32_t events, void *userdata); |
718db961 | 115 | |
842129f5 | 116 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f); |
308d72dc | 117 | static void service_enter_reload_by_notify(Service *s); |
842129f5 | 118 | |
94114711 YW |
119 | static bool SERVICE_STATE_WITH_MAIN_PROCESS(ServiceState state) { |
120 | return IN_SET(state, | |
121 | SERVICE_START, SERVICE_START_POST, | |
122 | SERVICE_RUNNING, | |
123 | SERVICE_RELOAD, SERVICE_RELOAD_SIGNAL, SERVICE_RELOAD_NOTIFY, | |
124 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, | |
125 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL); | |
126 | } | |
127 | ||
128 | static bool SERVICE_STATE_WITH_CONTROL_PROCESS(ServiceState state) { | |
129 | return IN_SET(state, | |
130 | SERVICE_CONDITION, | |
131 | SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, | |
132 | SERVICE_RELOAD, SERVICE_RELOAD_SIGNAL, SERVICE_RELOAD_NOTIFY, | |
133 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, | |
134 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL, | |
135 | SERVICE_CLEANING); | |
136 | } | |
137 | ||
a16e1123 LP |
138 | static void service_init(Unit *u) { |
139 | Service *s = SERVICE(u); | |
140 | ||
141 | assert(u); | |
ac155bb8 | 142 | assert(u->load_state == UNIT_STUB); |
a16e1123 | 143 | |
c9e120e0 LP |
144 | s->timeout_start_usec = u->manager->defaults.timeout_start_usec; |
145 | s->timeout_stop_usec = u->manager->defaults.timeout_stop_usec; | |
146 | s->timeout_abort_usec = u->manager->defaults.timeout_abort_usec; | |
147 | s->timeout_abort_set = u->manager->defaults.timeout_abort_set; | |
148 | s->restart_usec = u->manager->defaults.restart_usec; | |
e9f17fa8 | 149 | s->restart_max_delay_usec = USEC_INFINITY; |
36c16a7c | 150 | s->runtime_max_usec = USEC_INFINITY; |
0b86feac | 151 | s->type = _SERVICE_TYPE_INVALID; |
254d1313 ZJS |
152 | s->socket_fd = -EBADF; |
153 | s->stdin_fd = s->stdout_fd = s->stderr_fd = -EBADF; | |
3185a36b | 154 | s->guess_main_pid = true; |
c79ab77c LP |
155 | s->main_pid = PIDREF_NULL; |
156 | s->control_pid = PIDREF_NULL; | |
a16e1123 | 157 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; |
00f5ad93 LP |
158 | |
159 | s->exec_context.keyring_mode = MANAGER_IS_SYSTEM(u->manager) ? | |
160 | EXEC_KEYRING_PRIVATE : EXEC_KEYRING_INHERIT; | |
aa8c4bbf | 161 | |
19dff691 MY |
162 | s->notify_access_override = _NOTIFY_ACCESS_INVALID; |
163 | ||
aa8c4bbf | 164 | s->watchdog_original_usec = USEC_INFINITY; |
afcfaa69 LP |
165 | |
166 | s->oom_policy = _OOM_POLICY_INVALID; | |
3bd28bf7 LP |
167 | s->reload_begin_usec = USEC_INFINITY; |
168 | s->reload_signal = SIGHUP; | |
b9c1883a LP |
169 | |
170 | s->fd_store_preserve_mode = EXEC_PRESERVE_RESTART; | |
a16e1123 LP |
171 | } |
172 | ||
5e94833f LP |
173 | static void service_unwatch_control_pid(Service *s) { |
174 | assert(s); | |
ea1e0bf1 | 175 | unit_unwatch_pidref_done(UNIT(s), &s->control_pid); |
5e94833f LP |
176 | } |
177 | ||
178 | static void service_unwatch_main_pid(Service *s) { | |
179 | assert(s); | |
ea1e0bf1 | 180 | unit_unwatch_pidref_done(UNIT(s), &s->main_pid); |
5e94833f LP |
181 | } |
182 | ||
3e52541e | 183 | static void service_unwatch_pid_file(Service *s) { |
e9fa1bf7 MY |
184 | assert(s); |
185 | ||
3e52541e MS |
186 | if (!s->pid_file_pathspec) |
187 | return; | |
188 | ||
f2341e0a | 189 | log_unit_debug(UNIT(s), "Stopping watch for PID file %s", s->pid_file_pathspec->path); |
718db961 | 190 | path_spec_unwatch(s->pid_file_pathspec); |
3e52541e | 191 | path_spec_done(s->pid_file_pathspec); |
a1e58e8e | 192 | s->pid_file_pathspec = mfree(s->pid_file_pathspec); |
3e52541e MS |
193 | } |
194 | ||
7e0e6b50 | 195 | static int service_set_main_pidref(Service *s, PidRef pidref_consume, const dual_timestamp *start_timestamp) { |
c603f523 | 196 | _cleanup_(pidref_done) PidRef pidref = pidref_consume; |
6774be42 LP |
197 | int r; |
198 | ||
5925dd3c LP |
199 | assert(s); |
200 | ||
c603f523 | 201 | /* Takes ownership of the specified pidref on both success and failure. */ |
b1f6901d | 202 | |
c603f523 | 203 | if (!pidref_is_set(&pidref)) |
b1f6901d LP |
204 | return -ESRCH; |
205 | ||
c603f523 | 206 | if (pidref.pid <= 1) |
5925dd3c LP |
207 | return -EINVAL; |
208 | ||
c603f523 | 209 | if (pidref_is_self(&pidref)) |
5925dd3c LP |
210 | return -EINVAL; |
211 | ||
c603f523 | 212 | if (s->main_pid_known && pidref_equal(&s->main_pid, &pidref)) |
7400b9d2 LP |
213 | return 0; |
214 | ||
c603f523 | 215 | if (!pidref_equal(&s->main_pid, &pidref)) { |
7400b9d2 | 216 | service_unwatch_main_pid(s); |
7e0e6b50 | 217 | exec_status_start(&s->main_exec_status, pidref.pid, start_timestamp); |
7400b9d2 | 218 | } |
41efeaec | 219 | |
c603f523 | 220 | s->main_pid = TAKE_PIDREF(pidref); |
6dfa5494 LP |
221 | s->main_pid_known = true; |
222 | ||
6774be42 LP |
223 | r = pidref_is_my_child(&s->main_pid); |
224 | if (r < 0) | |
225 | 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); | |
120be68b | 226 | else if (r == 0) // FIXME: Supervise through pidfd here |
b1f6901d | 227 | 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); |
6774be42 | 228 | s->main_pid_alien = r <= 0; |
120be68b | 229 | |
5925dd3c LP |
230 | return 0; |
231 | } | |
232 | ||
81a1d6d6 | 233 | void service_release_socket_fd(Service *s) { |
4f2d528d LP |
234 | assert(s); |
235 | ||
c25fac9a LP |
236 | if (s->socket_fd < 0 && !UNIT_ISSET(s->accept_socket) && !s->socket_peer) |
237 | return; | |
238 | ||
239 | log_unit_debug(UNIT(s), "Closing connection socket."); | |
240 | ||
5cc3985e | 241 | /* Undo the effect of service_set_socket_fd(). */ |
4f2d528d | 242 | |
5cc3985e | 243 | s->socket_fd = asynchronous_close(s->socket_fd); |
6cf6bbc2 | 244 | |
5cc3985e LP |
245 | if (UNIT_ISSET(s->accept_socket)) { |
246 | socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket))); | |
247 | unit_ref_unset(&s->accept_socket); | |
248 | } | |
3fabebf4 LP |
249 | |
250 | s->socket_peer = socket_peer_unref(s->socket_peer); | |
6cf6bbc2 LP |
251 | } |
252 | ||
19dff691 MY |
253 | static void service_override_notify_access(Service *s, NotifyAccess notify_access_override) { |
254 | assert(s); | |
255 | ||
256 | s->notify_access_override = notify_access_override; | |
257 | ||
258 | log_unit_debug(UNIT(s), "notify_access=%s", notify_access_to_string(s->notify_access)); | |
259 | log_unit_debug(UNIT(s), "notify_access_override=%s", notify_access_to_string(s->notify_access_override)); | |
260 | } | |
261 | ||
a6927d7f MO |
262 | static void service_stop_watchdog(Service *s) { |
263 | assert(s); | |
264 | ||
5dcadb4c | 265 | s->watchdog_event_source = sd_event_source_disable_unref(s->watchdog_event_source); |
842129f5 | 266 | s->watchdog_timestamp = DUAL_TIMESTAMP_NULL; |
a6927d7f MO |
267 | } |
268 | ||
842129f5 | 269 | static void service_start_watchdog(Service *s) { |
2787d83c | 270 | usec_t watchdog_usec; |
9fb1cdb4 | 271 | int r; |
bb242b7b MO |
272 | |
273 | assert(s); | |
274 | ||
2787d83c | 275 | watchdog_usec = service_get_watchdog_usec(s); |
0da36375 | 276 | if (!timestamp_is_set(watchdog_usec)) { |
9fb1cdb4 | 277 | service_stop_watchdog(s); |
bb242b7b | 278 | return; |
9fb1cdb4 | 279 | } |
bb242b7b | 280 | |
718db961 | 281 | if (s->watchdog_event_source) { |
2787d83c | 282 | r = sd_event_source_set_time(s->watchdog_event_source, usec_add(s->watchdog_timestamp.monotonic, watchdog_usec)); |
718db961 | 283 | if (r < 0) { |
f2341e0a | 284 | log_unit_warning_errno(UNIT(s), r, "Failed to reset watchdog timer: %m"); |
718db961 LP |
285 | return; |
286 | } | |
287 | ||
842129f5 | 288 | r = sd_event_source_set_enabled(s->watchdog_event_source, SD_EVENT_ONESHOT); |
c4ef3317 | 289 | } else { |
6a0f1f6d LP |
290 | r = sd_event_add_time( |
291 | UNIT(s)->manager->event, | |
292 | &s->watchdog_event_source, | |
293 | CLOCK_MONOTONIC, | |
2787d83c | 294 | usec_add(s->watchdog_timestamp.monotonic, watchdog_usec), 0, |
6a0f1f6d | 295 | service_dispatch_watchdog, s); |
c4ef3317 | 296 | if (r < 0) { |
f2341e0a | 297 | log_unit_warning_errno(UNIT(s), r, "Failed to add watchdog timer: %m"); |
c4ef3317 LP |
298 | return; |
299 | } | |
300 | ||
7dfbe2e3 TG |
301 | (void) sd_event_source_set_description(s->watchdog_event_source, "service-watchdog"); |
302 | ||
c4ef3317 LP |
303 | /* Let's process everything else which might be a sign |
304 | * of living before we consider a service died. */ | |
d42b61d2 | 305 | r = sd_event_source_set_priority(s->watchdog_event_source, EVENT_PRIORITY_SERVICE_WATCHDOG); |
c4ef3317 | 306 | } |
bb242b7b | 307 | if (r < 0) |
f2341e0a | 308 | log_unit_warning_errno(UNIT(s), r, "Failed to install watchdog timer: %m"); |
bb242b7b MO |
309 | } |
310 | ||
5171356e MY |
311 | usec_t service_restart_usec_next(Service *s) { |
312 | unsigned n_restarts_next; | |
be1adc27 MY |
313 | |
314 | assert(s); | |
315 | ||
0c59d2e4 | 316 | /* When the service state is in SERVICE_*_BEFORE_AUTO_RESTART or SERVICE_AUTO_RESTART, we still need |
ba5e342c MY |
317 | * to add 1 to s->n_restarts manually, because s->n_restarts is not updated until a restart job is |
318 | * enqueued, i.e. state has transitioned to SERVICE_AUTO_RESTART_QUEUED. */ | |
319 | n_restarts_next = s->n_restarts + (s->state == SERVICE_AUTO_RESTART_QUEUED ? 0 : 1); | |
be1adc27 | 320 | |
5171356e | 321 | if (n_restarts_next <= 1 || |
be1adc27 | 322 | s->restart_steps == 0 || |
ea792cac | 323 | s->restart_usec == 0 || |
e9f17fa8 MY |
324 | s->restart_max_delay_usec == USEC_INFINITY || |
325 | s->restart_usec >= s->restart_max_delay_usec) | |
fe3d33c1 MY |
326 | return s->restart_usec; |
327 | ||
328 | if (n_restarts_next > s->restart_steps) | |
329 | return s->restart_max_delay_usec; | |
330 | ||
331 | /* Enforced in service_verify() and above */ | |
332 | assert(s->restart_max_delay_usec > s->restart_usec); | |
333 | ||
334 | /* r_i / r_0 = (r_n / r_0) ^ (i / n) | |
335 | * where, | |
336 | * r_0 : initial restart usec (s->restart_usec), | |
337 | * r_i : i-th restart usec (value), | |
338 | * r_n : maximum restart usec (s->restart_max_delay_usec), | |
339 | * i : index of the next step (n_restarts_next - 1) | |
340 | * n : num maximum steps (s->restart_steps) */ | |
341 | return (usec_t) (s->restart_usec * powl((long double) s->restart_max_delay_usec / s->restart_usec, | |
342 | (long double) (n_restarts_next - 1) / s->restart_steps)); | |
be1adc27 MY |
343 | } |
344 | ||
ec35a7f6 LP |
345 | static void service_extend_event_source_timeout(Service *s, sd_event_source *source, usec_t extended) { |
346 | usec_t current; | |
347 | int r; | |
348 | ||
a327431b DB |
349 | assert(s); |
350 | ||
ec35a7f6 LP |
351 | /* Extends the specified event source timer to at least the specified time, unless it is already later |
352 | * anyway. */ | |
a327431b | 353 | |
ec35a7f6 LP |
354 | if (!source) |
355 | return; | |
a327431b | 356 | |
ec35a7f6 LP |
357 | r = sd_event_source_get_time(source, ¤t); |
358 | if (r < 0) { | |
359 | const char *desc; | |
360 | (void) sd_event_source_get_description(s->timer_event_source, &desc); | |
361 | log_unit_warning_errno(UNIT(s), r, "Failed to retrieve timeout time for event source '%s', ignoring: %m", strna(desc)); | |
362 | return; | |
363 | } | |
a327431b | 364 | |
ec35a7f6 LP |
365 | if (current >= extended) /* Current timeout is already longer, ignore this. */ |
366 | return; | |
a327431b | 367 | |
ec35a7f6 LP |
368 | r = sd_event_source_set_time(source, extended); |
369 | if (r < 0) { | |
370 | const char *desc; | |
371 | (void) sd_event_source_get_description(s->timer_event_source, &desc); | |
365c2885 | 372 | log_unit_warning_errno(UNIT(s), r, "Failed to set timeout time for event source '%s', ignoring %m", strna(desc)); |
a327431b DB |
373 | } |
374 | } | |
375 | ||
ec35a7f6 LP |
376 | static void service_extend_timeout(Service *s, usec_t extend_timeout_usec) { |
377 | usec_t extended; | |
378 | ||
379 | assert(s); | |
380 | ||
0da36375 | 381 | if (!timestamp_is_set(extend_timeout_usec)) |
ec35a7f6 LP |
382 | return; |
383 | ||
384 | extended = usec_add(now(CLOCK_MONOTONIC), extend_timeout_usec); | |
385 | ||
386 | service_extend_event_source_timeout(s, s->timer_event_source, extended); | |
387 | service_extend_event_source_timeout(s, s->watchdog_event_source, extended); | |
388 | } | |
389 | ||
a6927d7f MO |
390 | static void service_reset_watchdog(Service *s) { |
391 | assert(s); | |
392 | ||
fa5a0251 | 393 | dual_timestamp_now(&s->watchdog_timestamp); |
842129f5 | 394 | service_start_watchdog(s); |
a6927d7f MO |
395 | } |
396 | ||
95d0d8ed | 397 | static void service_override_watchdog_timeout(Service *s, usec_t watchdog_override_usec) { |
2787d83c M |
398 | assert(s); |
399 | ||
400 | s->watchdog_override_enable = true; | |
401 | s->watchdog_override_usec = watchdog_override_usec; | |
402 | service_reset_watchdog(s); | |
403 | ||
404 | log_unit_debug(UNIT(s), "watchdog_usec="USEC_FMT, s->watchdog_usec); | |
405 | log_unit_debug(UNIT(s), "watchdog_override_usec="USEC_FMT, s->watchdog_override_usec); | |
406 | } | |
407 | ||
a02287ea | 408 | static ServiceFDStore* service_fd_store_unlink(ServiceFDStore *fs) { |
a354329f | 409 | if (!fs) |
a02287ea | 410 | return NULL; |
a354329f LP |
411 | |
412 | if (fs->service) { | |
413 | assert(fs->service->n_fd_store > 0); | |
414 | LIST_REMOVE(fd_store, fs->service->fd_store, fs); | |
415 | fs->service->n_fd_store--; | |
416 | } | |
417 | ||
1d3fe304 | 418 | sd_event_source_disable_unref(fs->event_source); |
a354329f | 419 | |
8dd4c05b | 420 | free(fs->fdname); |
99620f45 | 421 | asynchronous_close(fs->fd); |
a02287ea | 422 | return mfree(fs); |
a354329f LP |
423 | } |
424 | ||
a02287ea YW |
425 | DEFINE_TRIVIAL_CLEANUP_FUNC(ServiceFDStore*, service_fd_store_unlink); |
426 | ||
f0bfbfac ZJS |
427 | static void service_release_fd_store(Service *s) { |
428 | assert(s); | |
429 | ||
c25fac9a LP |
430 | if (!s->fd_store) |
431 | return; | |
432 | ||
f0bfbfac | 433 | log_unit_debug(UNIT(s), "Releasing all stored fds"); |
c25fac9a | 434 | |
f0bfbfac ZJS |
435 | while (s->fd_store) |
436 | service_fd_store_unlink(s->fd_store); | |
437 | ||
438 | assert(s->n_fd_store == 0); | |
439 | } | |
440 | ||
c25fac9a | 441 | static void service_release_stdio_fd(Service *s) { |
a354329f LP |
442 | assert(s); |
443 | ||
5bcf0881 | 444 | if (s->stdin_fd < 0 && s->stdout_fd < 0 && s->stderr_fd < 0) |
a354329f LP |
445 | return; |
446 | ||
c25fac9a | 447 | log_unit_debug(UNIT(s), "Releasing stdin/stdout/stderr file descriptors."); |
a354329f | 448 | |
99620f45 LP |
449 | s->stdin_fd = asynchronous_close(s->stdin_fd); |
450 | s->stdout_fd = asynchronous_close(s->stdout_fd); | |
451 | s->stderr_fd = asynchronous_close(s->stderr_fd); | |
a354329f | 452 | } |
81006ebb | 453 | |
87f0e418 | 454 | static void service_done(Unit *u) { |
e9fa1bf7 | 455 | Service *s = ASSERT_PTR(SERVICE(u)); |
44d8db9e | 456 | |
cd48e23f RP |
457 | open_file_free_many(&s->open_files); |
458 | ||
a1e58e8e LP |
459 | s->pid_file = mfree(s->pid_file); |
460 | s->status_text = mfree(s->status_text); | |
efe6e7d3 | 461 | |
28135da3 | 462 | s->exec_runtime = exec_runtime_free(s->exec_runtime); |
9cc54544 | 463 | |
e537352b | 464 | exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); |
44d8db9e | 465 | s->control_command = NULL; |
867b3b7d | 466 | s->main_command = NULL; |
44d8db9e | 467 | |
37520c1b LP |
468 | exit_status_set_free(&s->restart_prevent_status); |
469 | exit_status_set_free(&s->restart_force_status); | |
470 | exit_status_set_free(&s->success_status); | |
96342de6 | 471 | |
c79ab77c | 472 | /* This will leak a process, but at least no memory or any of our resources */ |
5e94833f LP |
473 | service_unwatch_main_pid(s); |
474 | service_unwatch_control_pid(s); | |
3e52541e | 475 | service_unwatch_pid_file(s); |
44d8db9e | 476 | |
05e343b7 | 477 | if (s->bus_name) { |
ac155bb8 | 478 | unit_unwatch_bus_name(u, s->bus_name); |
a1e58e8e | 479 | s->bus_name = mfree(s->bus_name); |
05e343b7 LP |
480 | } |
481 | ||
d8ccf5fd DM |
482 | s->bus_name_owner = mfree(s->bus_name_owner); |
483 | ||
064c5938 ZJS |
484 | s->usb_function_descriptors = mfree(s->usb_function_descriptors); |
485 | s->usb_function_strings = mfree(s->usb_function_strings); | |
486 | ||
bb242b7b MO |
487 | service_stop_watchdog(s); |
488 | ||
5dcadb4c ZJS |
489 | s->timer_event_source = sd_event_source_disable_unref(s->timer_event_source); |
490 | s->exec_fd_event_source = sd_event_source_disable_unref(s->exec_fd_event_source); | |
a354329f | 491 | |
e39eb045 LP |
492 | s->bus_name_pid_lookup_slot = sd_bus_slot_unref(s->bus_name_pid_lookup_slot); |
493 | ||
81a1d6d6 | 494 | service_release_socket_fd(s); |
c25fac9a | 495 | service_release_stdio_fd(s); |
81a1d6d6 | 496 | service_release_fd_store(s); |
718db961 LP |
497 | } |
498 | ||
2339fc93 | 499 | static int on_fd_store_io(sd_event_source *e, int fd, uint32_t revents, void *userdata) { |
99534007 | 500 | ServiceFDStore *fs = ASSERT_PTR(userdata); |
2339fc93 LP |
501 | |
502 | assert(e); | |
2339fc93 LP |
503 | |
504 | /* If we get either EPOLLHUP or EPOLLERR, it's time to remove this entry from the fd store */ | |
16f70d63 ZJS |
505 | log_unit_debug(UNIT(fs->service), |
506 | "Received %s on stored fd %d (%s), closing.", | |
507 | revents & EPOLLERR ? "EPOLLERR" : "EPOLLHUP", | |
508 | fs->fd, strna(fs->fdname)); | |
2339fc93 LP |
509 | service_fd_store_unlink(fs); |
510 | return 0; | |
511 | } | |
512 | ||
a02287ea YW |
513 | static int service_add_fd_store(Service *s, int fd_in, const char *name, bool do_poll) { |
514 | _cleanup_(service_fd_store_unlinkp) ServiceFDStore *fs = NULL; | |
515 | _cleanup_(asynchronous_closep) int fd = ASSERT_FD(fd_in); | |
e8783d76 | 516 | struct stat st; |
2339fc93 LP |
517 | int r; |
518 | ||
a02287ea | 519 | /* fd is always consumed even if the function fails. */ |
9021ff17 | 520 | |
2339fc93 | 521 | assert(s); |
2339fc93 | 522 | |
e8783d76 LP |
523 | if (fstat(fd, &st) < 0) |
524 | return -errno; | |
525 | ||
0578371f MY |
526 | log_unit_debug(UNIT(s), "Trying to stash fd for dev=" DEVNUM_FORMAT_STR "/inode=%" PRIu64, |
527 | DEVNUM_FORMAT_VAL(st.st_dev), (uint64_t) st.st_ino); | |
e8783d76 | 528 | |
2339fc93 | 529 | if (s->n_fd_store >= s->n_fd_store_max) |
e8783d76 LP |
530 | /* Our store is full. Use this errno rather than E[NM]FILE to distinguish from the case |
531 | * where systemd itself hits the file limit. */ | |
532 | return log_unit_debug_errno(UNIT(s), SYNTHETIC_ERRNO(EXFULL), "Hit fd store limit."); | |
2339fc93 | 533 | |
03677889 YW |
534 | LIST_FOREACH(fd_store, i, s->fd_store) { |
535 | r = same_fd(i->fd, fd); | |
2339fc93 LP |
536 | if (r < 0) |
537 | return r; | |
538 | if (r > 0) { | |
a02287ea | 539 | log_unit_debug(UNIT(s), "Suppressing duplicate fd %i in fd store.", fd); |
9021ff17 | 540 | return 0; /* fd already included */ |
2339fc93 LP |
541 | } |
542 | } | |
543 | ||
b0cea477 | 544 | fs = new(ServiceFDStore, 1); |
2339fc93 LP |
545 | if (!fs) |
546 | return -ENOMEM; | |
547 | ||
b0cea477 | 548 | *fs = (ServiceFDStore) { |
a02287ea | 549 | .fd = TAKE_FD(fd), |
b0cea477 LP |
550 | .do_poll = do_poll, |
551 | .fdname = strdup(name ?: "stored"), | |
552 | }; | |
553 | ||
a02287ea | 554 | if (!fs->fdname) |
8dd4c05b | 555 | return -ENOMEM; |
2339fc93 | 556 | |
cb5a46b8 | 557 | if (do_poll) { |
a02287ea YW |
558 | r = sd_event_add_io(UNIT(s)->manager->event, &fs->event_source, fs->fd, 0, on_fd_store_io, fs); |
559 | if (r < 0 && r != -EPERM) /* EPERM indicates fds that aren't pollable, which is OK */ | |
cb5a46b8 | 560 | return r; |
0578371f | 561 | if (r >= 0) |
cb5a46b8 KL |
562 | (void) sd_event_source_set_description(fs->event_source, "service-fd-store"); |
563 | } | |
7dfbe2e3 | 564 | |
0578371f MY |
565 | log_unit_debug(UNIT(s), "Added fd %i (%s) to fd store.", fs->fd, fs->fdname); |
566 | ||
a02287ea | 567 | fs->service = s; |
0578371f | 568 | LIST_PREPEND(fd_store, s->fd_store, TAKE_PTR(fs)); |
2339fc93 LP |
569 | s->n_fd_store++; |
570 | ||
9021ff17 | 571 | return 1; /* fd newly stored */ |
2339fc93 LP |
572 | } |
573 | ||
cb5a46b8 | 574 | static int service_add_fd_store_set(Service *s, FDSet *fds, const char *name, bool do_poll) { |
2339fc93 LP |
575 | int r; |
576 | ||
577 | assert(s); | |
578 | ||
a02287ea YW |
579 | for (;;) { |
580 | int fd; | |
2339fc93 LP |
581 | |
582 | fd = fdset_steal_first(fds); | |
583 | if (fd < 0) | |
584 | break; | |
585 | ||
cb5a46b8 | 586 | r = service_add_fd_store(s, fd, name, do_poll); |
b0924635 ZJS |
587 | if (r == -EXFULL) |
588 | return log_unit_warning_errno(UNIT(s), r, | |
589 | "Cannot store more fds than FileDescriptorStoreMax=%u, closing remaining.", | |
590 | s->n_fd_store_max); | |
2339fc93 | 591 | if (r < 0) |
b0924635 | 592 | return log_unit_error_errno(UNIT(s), r, "Failed to add fd to store: %m"); |
2339fc93 LP |
593 | } |
594 | ||
2339fc93 LP |
595 | return 0; |
596 | } | |
597 | ||
e78ee06d | 598 | static void service_remove_fd_store(Service *s, const char *name) { |
e78ee06d LP |
599 | assert(s); |
600 | assert(name); | |
601 | ||
80a226b2 | 602 | LIST_FOREACH(fd_store, fs, s->fd_store) { |
e78ee06d LP |
603 | if (!streq(fs->fdname, name)) |
604 | continue; | |
605 | ||
606 | log_unit_debug(UNIT(s), "Got explicit request to remove fd %i (%s), closing.", fs->fd, name); | |
607 | service_fd_store_unlink(fs); | |
608 | } | |
609 | } | |
610 | ||
ecea250d | 611 | static usec_t service_running_timeout(Service *s) { |
5918a933 AB |
612 | usec_t delta = 0; |
613 | ||
614 | assert(s); | |
615 | ||
616 | if (s->runtime_rand_extra_usec != 0) { | |
617 | delta = random_u64_range(s->runtime_rand_extra_usec); | |
618 | log_unit_debug(UNIT(s), "Adding delta of %s sec to timeout", FORMAT_TIMESPAN(delta, USEC_PER_SEC)); | |
619 | } | |
620 | ||
621 | return usec_add(usec_add(UNIT(s)->active_enter_timestamp.monotonic, | |
622 | s->runtime_max_usec), | |
623 | delta); | |
624 | } | |
625 | ||
e5d6dcce | 626 | static int service_arm_timer(Service *s, bool relative, usec_t usec) { |
718db961 LP |
627 | assert(s); |
628 | ||
e9276800 | 629 | return unit_arm_timer(UNIT(s), &s->timer_event_source, relative, usec, service_dispatch_timer); |
44d8db9e LP |
630 | } |
631 | ||
243b1432 LP |
632 | static int service_verify(Service *s) { |
633 | assert(s); | |
e0cfed4c | 634 | assert(UNIT(s)->load_state == UNIT_LOADED); |
243b1432 | 635 | |
03677889 | 636 | for (ServiceExecCommand c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) |
8688a389 YW |
637 | LIST_FOREACH(command, command, s->exec_command[c]) { |
638 | if (!path_is_absolute(command->path) && !filename_is_valid(command->path)) | |
639 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENOEXEC), | |
640 | "Service %s= binary path \"%s\" is neither a valid executable name nor an absolute path. Refusing.", | |
641 | command->path, | |
642 | service_exec_command_to_string(c)); | |
29500cf8 HC |
643 | if (strv_isempty(command->argv)) |
644 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENOEXEC), | |
645 | "Service has an empty argv in %s=. Refusing.", | |
646 | service_exec_command_to_string(c)); | |
8688a389 | 647 | } |
29500cf8 | 648 | |
d85ff944 YW |
649 | if (!s->exec_command[SERVICE_EXEC_START] && !s->exec_command[SERVICE_EXEC_STOP] && |
650 | UNIT(s)->success_action == EMERGENCY_ACTION_NONE) | |
3f00d379 ZJS |
651 | /* FailureAction= only makes sense if one of the start or stop commands is specified. |
652 | * SuccessAction= will be executed unconditionally if no commands are specified. Hence, | |
653 | * either a command or SuccessAction= are required. */ | |
654 | ||
d85ff944 | 655 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENOEXEC), "Service has no ExecStart=, ExecStop=, or SuccessAction=. Refusing."); |
243b1432 | 656 | |
d85ff944 YW |
657 | if (s->type != SERVICE_ONESHOT && !s->exec_command[SERVICE_EXEC_START]) |
658 | 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 | 659 | |
d85ff944 YW |
660 | if (!s->remain_after_exit && !s->exec_command[SERVICE_EXEC_START] && UNIT(s)->success_action == EMERGENCY_ACTION_NONE) |
661 | 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 | 662 | |
d85ff944 YW |
663 | if (s->type != SERVICE_ONESHOT && s->exec_command[SERVICE_EXEC_START]->command_next) |
664 | 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 | 665 | |
d67c51e3 | 666 | if (s->type == SERVICE_ONESHOT && IN_SET(s->restart, SERVICE_RESTART_ALWAYS, SERVICE_RESTART_ON_SUCCESS)) |
d85ff944 | 667 | 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 | 668 | |
596e4470 HC |
669 | if (s->type == SERVICE_ONESHOT && s->exit_type == SERVICE_EXIT_CGROUP) |
670 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENOEXEC), "Service has ExitType=cgroup set, which isn't allowed for Type=oneshot services. Refusing."); | |
671 | ||
d85ff944 YW |
672 | if (s->type == SERVICE_DBUS && !s->bus_name) |
673 | 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 | 674 | |
d85ff944 YW |
675 | if (s->exec_context.pam_name && !IN_SET(s->kill_context.kill_mode, KILL_CONTROL_GROUP, KILL_MIXED)) |
676 | 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 | 677 | |
6b7e5923 PS |
678 | if (s->usb_function_descriptors && !s->usb_function_strings) |
679 | log_unit_warning(UNIT(s), "Service has USBFunctionDescriptors= setting, but no USBFunctionStrings=. Ignoring."); | |
680 | ||
681 | if (!s->usb_function_descriptors && s->usb_function_strings) | |
682 | log_unit_warning(UNIT(s), "Service has USBFunctionStrings= setting, but no USBFunctionDescriptors=. Ignoring."); | |
683 | ||
36c16a7c | 684 | if (s->runtime_max_usec != USEC_INFINITY && s->type == SERVICE_ONESHOT) |
226a08f2 | 685 | log_unit_warning(UNIT(s), "RuntimeMaxSec= has no effect in combination with Type=oneshot. Ignoring."); |
36c16a7c | 686 | |
5918a933 AB |
687 | if (s->runtime_max_usec == USEC_INFINITY && s->runtime_rand_extra_usec != 0) |
688 | log_unit_warning(UNIT(s), "Service has RuntimeRandomizedExtraSec= setting, but no RuntimeMaxSec=. Ignoring."); | |
689 | ||
86838bf0 LB |
690 | if (s->exit_type == SERVICE_EXIT_CGROUP && cg_unified() < CGROUP_UNIFIED_SYSTEMD) |
691 | log_unit_warning(UNIT(s), "Service has ExitType=cgroup set, but we are running with legacy cgroups v1, which might not work correctly. Continuing."); | |
692 | ||
e9f17fa8 MY |
693 | if (s->restart_max_delay_usec == USEC_INFINITY && s->restart_steps > 0) |
694 | log_unit_warning(UNIT(s), "Service has RestartSteps= but no RestartMaxDelaySec= setting. Ignoring."); | |
be1adc27 | 695 | |
e9f17fa8 MY |
696 | if (s->restart_max_delay_usec != USEC_INFINITY && s->restart_steps == 0) |
697 | log_unit_warning(UNIT(s), "Service has RestartMaxDelaySec= but no RestartSteps= setting. Ignoring."); | |
be1adc27 | 698 | |
e9f17fa8 MY |
699 | if (s->restart_max_delay_usec < s->restart_usec) { |
700 | log_unit_warning(UNIT(s), "RestartMaxDelaySec= has a value smaller than RestartSec=, resetting RestartSec= to RestartMaxDelaySec=."); | |
701 | s->restart_usec = s->restart_max_delay_usec; | |
be1adc27 MY |
702 | } |
703 | ||
243b1432 LP |
704 | return 0; |
705 | } | |
706 | ||
a40eb732 LP |
707 | static int service_add_default_dependencies(Service *s) { |
708 | int r; | |
709 | ||
710 | assert(s); | |
711 | ||
45f06b34 LP |
712 | if (!UNIT(s)->default_dependencies) |
713 | return 0; | |
714 | ||
a40eb732 LP |
715 | /* Add a number of automatic dependencies useful for the |
716 | * majority of services. */ | |
717 | ||
463d0d15 | 718 | if (MANAGER_IS_SYSTEM(UNIT(s)->manager)) { |
3835b9aa LB |
719 | /* First, pull in the really early boot stuff, and |
720 | * require it, so that we fail if we can't acquire | |
721 | * it. */ | |
722 | ||
723 | r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, true, UNIT_DEPENDENCY_DEFAULT); | |
cb4c247d LP |
724 | if (r < 0) |
725 | return r; | |
726 | } else { | |
727 | ||
728 | /* In the --user instance there's no sysinit.target, | |
729 | * in that case require basic.target instead. */ | |
730 | ||
35d8c19a | 731 | r = unit_add_dependency_by_name(UNIT(s), UNIT_REQUIRES, SPECIAL_BASIC_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
cb4c247d LP |
732 | if (r < 0) |
733 | return r; | |
734 | } | |
735 | ||
736 | /* Second, if the rest of the base system is in the same | |
737 | * transaction, order us after it, but do not pull it in or | |
738 | * even require it. */ | |
35d8c19a | 739 | r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_BASIC_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
fccd44ec KS |
740 | if (r < 0) |
741 | return r; | |
a40eb732 | 742 | |
cb4c247d | 743 | /* Third, add us in for normal shutdown. */ |
3835b9aa | 744 | return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
a40eb732 LP |
745 | } |
746 | ||
3b7f79dc | 747 | static void service_fix_stdio(Service *s) { |
4dfc092a LP |
748 | assert(s); |
749 | ||
3b7f79dc LP |
750 | /* Note that EXEC_INPUT_NULL and EXEC_OUTPUT_INHERIT play a special role here: they are both the |
751 | * default value that is subject to automatic overriding triggered by other settings and an explicit | |
162392b7 | 752 | * choice the user can make. We don't distinguish between these cases currently. */ |
3b7f79dc LP |
753 | |
754 | if (s->exec_context.std_input == EXEC_INPUT_NULL && | |
755 | s->exec_context.stdin_data_size > 0) | |
756 | s->exec_context.std_input = EXEC_INPUT_DATA; | |
757 | ||
758 | if (IN_SET(s->exec_context.std_input, | |
759 | EXEC_INPUT_TTY, | |
760 | EXEC_INPUT_TTY_FORCE, | |
761 | EXEC_INPUT_TTY_FAIL, | |
762 | EXEC_INPUT_SOCKET, | |
763 | EXEC_INPUT_NAMED_FD)) | |
764 | return; | |
765 | ||
766 | /* We assume these listed inputs refer to bidirectional streams, and hence duplicating them from | |
767 | * stdin to stdout/stderr makes sense and hence leaving EXEC_OUTPUT_INHERIT in place makes sense, | |
768 | * too. Outputs such as regular files or sealed data memfds otoh don't really make sense to be | |
769 | * duplicated for both input and output at the same time (since they then would cause a feedback | |
770 | * loop), hence override EXEC_OUTPUT_INHERIT with the default stderr/stdout setting. */ | |
4dfc092a LP |
771 | |
772 | if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT && | |
3b7f79dc | 773 | s->exec_context.std_output == EXEC_OUTPUT_INHERIT) |
c9e120e0 | 774 | s->exec_context.std_error = UNIT(s)->manager->defaults.std_error; |
4dfc092a | 775 | |
3b7f79dc | 776 | if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT) |
c9e120e0 | 777 | s->exec_context.std_output = UNIT(s)->manager->defaults.std_output; |
4dfc092a LP |
778 | } |
779 | ||
45f06b34 LP |
780 | static int service_setup_bus_name(Service *s) { |
781 | int r; | |
782 | ||
783 | assert(s); | |
784 | ||
0f97b7c3 | 785 | /* If s->bus_name is not set, then the unit will be refused by service_verify() later. */ |
1e8b312e | 786 | if (!s->bus_name) |
45f06b34 LP |
787 | return 0; |
788 | ||
1e8b312e LP |
789 | if (s->type == SERVICE_DBUS) { |
790 | r = unit_add_dependency_by_name(UNIT(s), UNIT_REQUIRES, SPECIAL_DBUS_SOCKET, true, UNIT_DEPENDENCY_FILE); | |
791 | if (r < 0) | |
792 | return log_unit_error_errno(UNIT(s), r, "Failed to add dependency on " SPECIAL_DBUS_SOCKET ": %m"); | |
45f06b34 | 793 | |
1e8b312e LP |
794 | /* We always want to be ordered against dbus.socket if both are in the transaction. */ |
795 | r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_DBUS_SOCKET, true, UNIT_DEPENDENCY_FILE); | |
796 | if (r < 0) | |
797 | return log_unit_error_errno(UNIT(s), r, "Failed to add dependency on " SPECIAL_DBUS_SOCKET ": %m"); | |
798 | } | |
45f06b34 LP |
799 | |
800 | r = unit_watch_bus_name(UNIT(s), s->bus_name); | |
801 | if (r == -EEXIST) | |
802 | return log_unit_error_errno(UNIT(s), r, "Two services allocated for the same bus name %s, refusing operation.", s->bus_name); | |
803 | if (r < 0) | |
804 | return log_unit_error_errno(UNIT(s), r, "Cannot watch bus name %s: %m", s->bus_name); | |
805 | ||
806 | return 0; | |
807 | } | |
808 | ||
8545f7ce LP |
809 | static int service_add_extras(Service *s) { |
810 | int r; | |
811 | ||
812 | assert(s); | |
813 | ||
814 | if (s->type == _SERVICE_TYPE_INVALID) { | |
815 | /* Figure out a type automatically */ | |
816 | if (s->bus_name) | |
817 | s->type = SERVICE_DBUS; | |
818 | else if (s->exec_command[SERVICE_EXEC_START]) | |
819 | s->type = SERVICE_SIMPLE; | |
820 | else | |
821 | s->type = SERVICE_ONESHOT; | |
822 | } | |
823 | ||
824 | /* Oneshot services have disabled start timeout by default */ | |
825 | if (s->type == SERVICE_ONESHOT && !s->start_timeout_defined) | |
36c16a7c | 826 | s->timeout_start_usec = USEC_INFINITY; |
8545f7ce | 827 | |
3b7f79dc | 828 | service_fix_stdio(s); |
8545f7ce LP |
829 | |
830 | r = unit_patch_contexts(UNIT(s)); | |
831 | if (r < 0) | |
832 | return r; | |
833 | ||
834 | r = unit_add_exec_dependencies(UNIT(s), &s->exec_context); | |
835 | if (r < 0) | |
836 | return r; | |
837 | ||
d79200e2 | 838 | r = unit_set_default_slice(UNIT(s)); |
8545f7ce LP |
839 | if (r < 0) |
840 | return r; | |
841 | ||
4330dc03 AJ |
842 | /* If the service needs the notify socket, let's enable it automatically. */ |
843 | if (s->notify_access == NOTIFY_NONE && | |
3bd28bf7 | 844 | (IN_SET(s->type, SERVICE_NOTIFY, SERVICE_NOTIFY_RELOAD) || s->watchdog_usec > 0 || s->n_fd_store_max > 0)) |
8545f7ce LP |
845 | s->notify_access = NOTIFY_MAIN; |
846 | ||
afcfaa69 LP |
847 | /* If no OOM policy was explicitly set, then default to the configure default OOM policy. Except when |
848 | * delegation is on, in that case it we assume the payload knows better what to do and can process | |
5238e957 | 849 | * things in a more focused way. */ |
afcfaa69 | 850 | if (s->oom_policy < 0) |
c9e120e0 | 851 | s->oom_policy = s->cgroup_context.delegate ? OOM_CONTINUE : UNIT(s)->manager->defaults.oom_policy; |
afcfaa69 LP |
852 | |
853 | /* Let the kernel do the killing if that's requested. */ | |
854 | s->cgroup_context.memory_oom_group = s->oom_policy == OOM_KILL; | |
855 | ||
45f06b34 LP |
856 | r = service_add_default_dependencies(s); |
857 | if (r < 0) | |
858 | return r; | |
8545f7ce | 859 | |
45f06b34 LP |
860 | r = service_setup_bus_name(s); |
861 | if (r < 0) | |
862 | return r; | |
8545f7ce LP |
863 | |
864 | return 0; | |
865 | } | |
866 | ||
e537352b | 867 | static int service_load(Unit *u) { |
e9fa1bf7 | 868 | Service *s = ASSERT_PTR(SERVICE(u)); |
8bb2d17d | 869 | int r; |
e537352b | 870 | |
e0cfed4c | 871 | r = unit_load_fragment_and_dropin(u, true); |
c2756a68 | 872 | if (r < 0) |
5cb5a6ff LP |
873 | return r; |
874 | ||
e0cfed4c ZJS |
875 | if (u->load_state != UNIT_LOADED) |
876 | return 0; | |
034c6ed7 | 877 | |
23a177ef | 878 | /* This is a new unit? Then let's add in some extras */ |
e0cfed4c ZJS |
879 | r = service_add_extras(s); |
880 | if (r < 0) | |
881 | return r; | |
8e274523 | 882 | |
243b1432 | 883 | return service_verify(s); |
034c6ed7 LP |
884 | } |
885 | ||
f2eb0c50 LP |
886 | static void service_dump_fdstore(Service *s, FILE *f, const char *prefix) { |
887 | assert(s); | |
888 | assert(f); | |
889 | assert(prefix); | |
890 | ||
891 | LIST_FOREACH(fd_store, i, s->fd_store) { | |
892 | _cleanup_free_ char *path = NULL; | |
893 | struct stat st; | |
894 | int flags; | |
895 | ||
896 | if (fstat(i->fd, &st) < 0) { | |
897 | log_debug_errno(errno, "Failed to stat fdstore entry: %m"); | |
898 | continue; | |
899 | } | |
900 | ||
901 | flags = fcntl(i->fd, F_GETFL); | |
902 | if (flags < 0) { | |
903 | log_debug_errno(errno, "Failed to get fdstore entry flags: %m"); | |
904 | continue; | |
905 | } | |
906 | ||
907 | (void) fd_get_path(i->fd, &path); | |
908 | ||
909 | fprintf(f, | |
910 | "%s%s '%s' (type=%s; dev=" DEVNUM_FORMAT_STR "; inode=%" PRIu64 "; rdev=" DEVNUM_FORMAT_STR "; path=%s; access=%s)\n", | |
911 | prefix, i == s->fd_store ? "File Descriptor Store Entry:" : " ", | |
912 | i->fdname, | |
8ba11146 | 913 | strna(inode_type_to_string(st.st_mode)), |
f2eb0c50 LP |
914 | DEVNUM_FORMAT_VAL(st.st_dev), |
915 | (uint64_t) st.st_ino, | |
916 | DEVNUM_FORMAT_VAL(st.st_rdev), | |
917 | strna(path), | |
8ba11146 | 918 | strna(accmode_to_string(flags))); |
f2eb0c50 LP |
919 | } |
920 | } | |
921 | ||
87f0e418 | 922 | static void service_dump(Unit *u, FILE *f, const char *prefix) { |
e9fa1bf7 | 923 | Service *s = ASSERT_PTR(SERVICE(u)); |
47be870b | 924 | const char *prefix2; |
5cb5a6ff | 925 | |
4c940960 | 926 | prefix = strempty(prefix); |
63c372cb | 927 | prefix2 = strjoina(prefix, "\t"); |
44d8db9e | 928 | |
5cb5a6ff | 929 | fprintf(f, |
81a2b7ce | 930 | "%sService State: %s\n" |
f42806df LP |
931 | "%sResult: %s\n" |
932 | "%sReload Result: %s\n" | |
4c2f5842 | 933 | "%sClean Result: %s\n" |
81a2b7ce | 934 | "%sPermissionsStartOnly: %s\n" |
8e274523 | 935 | "%sRootDirectoryStartOnly: %s\n" |
02ee865a | 936 | "%sRemainAfterExit: %s\n" |
3185a36b | 937 | "%sGuessMainPID: %s\n" |
c952c6ec | 938 | "%sType: %s\n" |
2cf3143a | 939 | "%sRestart: %s\n" |
308d72dc | 940 | "%sNotifyAccess: %s\n" |
afcfaa69 | 941 | "%sNotifyState: %s\n" |
3bd28bf7 LP |
942 | "%sOOMPolicy: %s\n" |
943 | "%sReloadSignal: %s\n", | |
81a2b7ce | 944 | prefix, service_state_to_string(s->state), |
f42806df LP |
945 | prefix, service_result_to_string(s->result), |
946 | prefix, service_result_to_string(s->reload_result), | |
4c2f5842 | 947 | prefix, service_result_to_string(s->clean_result), |
81a2b7ce | 948 | prefix, yes_no(s->permissions_start_only), |
8e274523 | 949 | prefix, yes_no(s->root_directory_start_only), |
02ee865a | 950 | prefix, yes_no(s->remain_after_exit), |
3185a36b | 951 | prefix, yes_no(s->guess_main_pid), |
c952c6ec | 952 | prefix, service_type_to_string(s->type), |
2cf3143a | 953 | prefix, service_restart_to_string(s->restart), |
19dff691 | 954 | prefix, notify_access_to_string(service_get_notify_access(s)), |
afcfaa69 | 955 | prefix, notify_state_to_string(s->notify_state), |
3bd28bf7 LP |
956 | prefix, oom_policy_to_string(s->oom_policy), |
957 | prefix, signal_to_string(s->reload_signal)); | |
5cb5a6ff | 958 | |
c79ab77c | 959 | if (pidref_is_set(&s->control_pid)) |
70123e68 | 960 | fprintf(f, |
ccd06097 | 961 | "%sControl PID: "PID_FMT"\n", |
c79ab77c | 962 | prefix, s->control_pid.pid); |
70123e68 | 963 | |
c79ab77c | 964 | if (pidref_is_set(&s->main_pid)) |
70123e68 | 965 | fprintf(f, |
ccd06097 | 966 | "%sMain PID: "PID_FMT"\n" |
6dfa5494 LP |
967 | "%sMain PID Known: %s\n" |
968 | "%sMain PID Alien: %s\n", | |
c79ab77c | 969 | prefix, s->main_pid.pid, |
6dfa5494 LP |
970 | prefix, yes_no(s->main_pid_known), |
971 | prefix, yes_no(s->main_pid_alien)); | |
70123e68 | 972 | |
034c6ed7 LP |
973 | if (s->pid_file) |
974 | fprintf(f, | |
975 | "%sPIDFile: %s\n", | |
976 | prefix, s->pid_file); | |
977 | ||
05e343b7 LP |
978 | if (s->bus_name) |
979 | fprintf(f, | |
980 | "%sBusName: %s\n" | |
981 | "%sBus Name Good: %s\n", | |
982 | prefix, s->bus_name, | |
983 | prefix, yes_no(s->bus_name_good)); | |
984 | ||
9dfb64f8 ZJS |
985 | if (UNIT_ISSET(s->accept_socket)) |
986 | fprintf(f, | |
987 | "%sAccept Socket: %s\n", | |
988 | prefix, UNIT_DEREF(s->accept_socket)->id); | |
989 | ||
c9d41699 YW |
990 | fprintf(f, |
991 | "%sRestartSec: %s\n" | |
be1adc27 | 992 | "%sRestartSteps: %u\n" |
e9f17fa8 | 993 | "%sRestartMaxDelaySec: %s\n" |
c9d41699 | 994 | "%sTimeoutStartSec: %s\n" |
bf760801 JK |
995 | "%sTimeoutStopSec: %s\n" |
996 | "%sTimeoutStartFailureMode: %s\n" | |
997 | "%sTimeoutStopFailureMode: %s\n", | |
5291f26d | 998 | prefix, FORMAT_TIMESPAN(s->restart_usec, USEC_PER_SEC), |
be1adc27 | 999 | prefix, s->restart_steps, |
e9f17fa8 | 1000 | prefix, FORMAT_TIMESPAN(s->restart_max_delay_usec, USEC_PER_SEC), |
5291f26d ZJS |
1001 | prefix, FORMAT_TIMESPAN(s->timeout_start_usec, USEC_PER_SEC), |
1002 | prefix, FORMAT_TIMESPAN(s->timeout_stop_usec, USEC_PER_SEC), | |
bf760801 JK |
1003 | prefix, service_timeout_failure_mode_to_string(s->timeout_start_failure_mode), |
1004 | prefix, service_timeout_failure_mode_to_string(s->timeout_stop_failure_mode)); | |
dcab85be YW |
1005 | |
1006 | if (s->timeout_abort_set) | |
1007 | fprintf(f, | |
1008 | "%sTimeoutAbortSec: %s\n", | |
5291f26d | 1009 | prefix, FORMAT_TIMESPAN(s->timeout_abort_usec, USEC_PER_SEC)); |
dcab85be YW |
1010 | |
1011 | fprintf(f, | |
1012 | "%sRuntimeMaxSec: %s\n" | |
5918a933 | 1013 | "%sRuntimeRandomizedExtraSec: %s\n" |
dcab85be | 1014 | "%sWatchdogSec: %s\n", |
5291f26d | 1015 | prefix, FORMAT_TIMESPAN(s->runtime_max_usec, USEC_PER_SEC), |
5918a933 | 1016 | prefix, FORMAT_TIMESPAN(s->runtime_rand_extra_usec, USEC_PER_SEC), |
5291f26d | 1017 | prefix, FORMAT_TIMESPAN(s->watchdog_usec, USEC_PER_SEC)); |
c9d41699 | 1018 | |
4819ff03 | 1019 | kill_context_dump(&s->kill_context, f, prefix); |
5cb5a6ff LP |
1020 | exec_context_dump(&s->exec_context, f, prefix); |
1021 | ||
68e58ca9 | 1022 | for (ServiceExecCommand c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) { |
44d8db9e LP |
1023 | if (!s->exec_command[c]) |
1024 | continue; | |
1025 | ||
3a7bb5c9 LP |
1026 | fprintf(f, "%s%s %s:\n", |
1027 | prefix, special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), service_exec_command_to_string(c)); | |
44d8db9e LP |
1028 | |
1029 | exec_command_dump_list(s->exec_command[c], f, prefix2); | |
5cb5a6ff | 1030 | } |
44d8db9e | 1031 | |
8c47c732 LP |
1032 | if (s->status_text) |
1033 | fprintf(f, "%sStatus Text: %s\n", | |
1034 | prefix, s->status_text); | |
a354329f | 1035 | |
ece174c5 | 1036 | if (s->n_fd_store_max > 0) |
a354329f LP |
1037 | fprintf(f, |
1038 | "%sFile Descriptor Store Max: %u\n" | |
b9c1883a | 1039 | "%sFile Descriptor Store Pin: %s\n" |
da6053d0 | 1040 | "%sFile Descriptor Store Current: %zu\n", |
a354329f | 1041 | prefix, s->n_fd_store_max, |
b9c1883a | 1042 | prefix, exec_preserve_mode_to_string(s->fd_store_preserve_mode), |
a354329f | 1043 | prefix, s->n_fd_store); |
18f573aa | 1044 | |
f2eb0c50 LP |
1045 | service_dump_fdstore(s, f, prefix); |
1046 | ||
cd48e23f RP |
1047 | if (s->open_files) |
1048 | LIST_FOREACH(open_files, of, s->open_files) { | |
1049 | _cleanup_free_ char *ofs = NULL; | |
1050 | int r; | |
1051 | ||
1052 | r = open_file_to_string(of, &ofs); | |
1053 | if (r < 0) { | |
1054 | log_debug_errno(r, | |
1055 | "Failed to convert OpenFile= setting to string, ignoring: %m"); | |
1056 | continue; | |
1057 | } | |
1058 | ||
1059 | fprintf(f, "%sOpen File: %s\n", prefix, ofs); | |
1060 | } | |
1061 | ||
bc0623df | 1062 | cgroup_context_dump(UNIT(s), f, prefix); |
5cb5a6ff LP |
1063 | } |
1064 | ||
495e75ed | 1065 | static int service_is_suitable_main_pid(Service *s, PidRef *pid, int prio) { |
db256aab | 1066 | Unit *owner; |
becdfcb9 | 1067 | int r; |
db256aab LP |
1068 | |
1069 | assert(s); | |
495e75ed | 1070 | assert(pidref_is_set(pid)); |
db256aab LP |
1071 | |
1072 | /* Checks whether the specified PID is suitable as main PID for this service. returns negative if not, 0 if the | |
1073 | * PID is questionnable but should be accepted if the source of configuration is trusted. > 0 if the PID is | |
1074 | * good */ | |
1075 | ||
a7a87769 | 1076 | if (pidref_is_self(pid) || pid->pid == 1) |
495e75ed | 1077 | return log_unit_full_errno(UNIT(s), prio, SYNTHETIC_ERRNO(EPERM), "New main PID "PID_FMT" is the manager, refusing.", pid->pid); |
db256aab | 1078 | |
495e75ed LP |
1079 | if (pidref_equal(pid, &s->control_pid)) |
1080 | return log_unit_full_errno(UNIT(s), prio, SYNTHETIC_ERRNO(EPERM), "New main PID "PID_FMT" is the control process, refusing.", pid->pid); | |
db256aab | 1081 | |
becdfcb9 | 1082 | r = pidref_is_alive(pid); |
bca08053 MY |
1083 | if (r < 0) |
1084 | 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 | 1085 | if (r == 0) |
495e75ed | 1086 | 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 | 1087 | |
495e75ed | 1088 | owner = manager_get_unit_by_pidref(UNIT(s)->manager, pid); |
db256aab | 1089 | if (owner == UNIT(s)) { |
495e75ed | 1090 | log_unit_debug(UNIT(s), "New main PID "PID_FMT" belongs to service, we are happy.", pid->pid); |
db256aab LP |
1091 | return 1; /* Yay, it's definitely a good PID */ |
1092 | } | |
1093 | ||
1094 | return 0; /* Hmm it's a suspicious PID, let's accept it if configuration source is trusted */ | |
1095 | } | |
1096 | ||
c5419d42 | 1097 | static int service_load_pid_file(Service *s, bool may_warn) { |
b1f6901d | 1098 | _cleanup_(pidref_done) PidRef pidref = PIDREF_NULL; |
73969ab6 | 1099 | bool questionable_pid_file = false; |
7fd1b19b | 1100 | _cleanup_free_ char *k = NULL; |
254d1313 | 1101 | _cleanup_close_ int fd = -EBADF; |
db256aab | 1102 | int r, prio; |
034c6ed7 LP |
1103 | |
1104 | assert(s); | |
1105 | ||
034c6ed7 | 1106 | if (!s->pid_file) |
13230d5d | 1107 | return -ENOENT; |
034c6ed7 | 1108 | |
db256aab LP |
1109 | prio = may_warn ? LOG_INFO : LOG_DEBUG; |
1110 | ||
f461a28d | 1111 | r = chase(s->pid_file, NULL, CHASE_SAFE, NULL, &fd); |
a5648b80 | 1112 | if (r == -ENOLINK) { |
8ed6f81b YW |
1113 | log_unit_debug_errno(UNIT(s), r, |
1114 | "Potentially unsafe symlink chain, will now retry with relaxed checks: %s", s->pid_file); | |
73969ab6 LP |
1115 | |
1116 | questionable_pid_file = true; | |
1117 | ||
f461a28d | 1118 | r = chase(s->pid_file, NULL, 0, NULL, &fd); |
73969ab6 | 1119 | } |
a5648b80 | 1120 | if (r < 0) |
f86a388d | 1121 | return log_unit_full_errno(UNIT(s), prio, r, |
8ed6f81b | 1122 | "Can't open PID file %s (yet?) after %s: %m", s->pid_file, service_state_to_string(s->state)); |
db256aab | 1123 | |
a5648b80 | 1124 | /* Let's read the PID file now that we chased it down. But we need to convert the O_PATH fd |
f461a28d | 1125 | * chase() returned us into a proper fd first. */ |
ddb6eeaf | 1126 | r = read_one_line_file(FORMAT_PROC_FD_PATH(fd), &k); |
db256aab | 1127 | if (r < 0) |
a5648b80 ZJS |
1128 | return log_unit_error_errno(UNIT(s), r, |
1129 | "Can't convert PID files %s O_PATH file descriptor to proper file descriptor: %m", | |
1130 | s->pid_file); | |
034c6ed7 | 1131 | |
495e75ed | 1132 | r = pidref_set_pidstr(&pidref, k); |
db256aab | 1133 | if (r < 0) |
8ed6f81b | 1134 | return log_unit_full_errno(UNIT(s), prio, r, "Failed to parse PID from file %s: %m", s->pid_file); |
db256aab | 1135 | |
495e75ed | 1136 | if (s->main_pid_known && pidref_equal(&pidref, &s->main_pid)) |
db256aab LP |
1137 | return 0; |
1138 | ||
495e75ed | 1139 | r = service_is_suitable_main_pid(s, &pidref, prio); |
db256aab | 1140 | if (r < 0) |
5925dd3c | 1141 | return r; |
db256aab LP |
1142 | if (r == 0) { |
1143 | struct stat st; | |
406eaf93 | 1144 | |
d85ff944 YW |
1145 | if (questionable_pid_file) |
1146 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(EPERM), | |
1147 | "Refusing to accept PID outside of service control group, acquired through unsafe symlink chain: %s", s->pid_file); | |
73969ab6 | 1148 | |
db256aab LP |
1149 | /* Hmm, it's not clear if the new main PID is safe. Let's allow this if the PID file is owned by root */ |
1150 | ||
1151 | if (fstat(fd, &st) < 0) | |
1152 | return log_unit_error_errno(UNIT(s), errno, "Failed to fstat() PID file O_PATH fd: %m"); | |
1153 | ||
d85ff944 YW |
1154 | if (st.st_uid != 0) |
1155 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(EPERM), | |
b1f6901d | 1156 | "New main PID "PID_FMT" does not belong to service, and PID file is not owned by root. Refusing.", pidref.pid); |
db256aab | 1157 | |
b1f6901d | 1158 | 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 |
1159 | } |
1160 | ||
db01f8b3 | 1161 | if (s->main_pid_known) { |
b1f6901d | 1162 | log_unit_debug(UNIT(s), "Main PID changing: "PID_FMT" -> "PID_FMT, s->main_pid.pid, pidref.pid); |
8bb2d17d | 1163 | |
db01f8b3 MS |
1164 | service_unwatch_main_pid(s); |
1165 | s->main_pid_known = false; | |
3a111838 | 1166 | } else |
b1f6901d | 1167 | log_unit_debug(UNIT(s), "Main PID loaded: "PID_FMT, pidref.pid); |
db01f8b3 | 1168 | |
7e0e6b50 | 1169 | r = service_set_main_pidref(s, TAKE_PIDREF(pidref), /* start_timestamp = */ NULL); |
117dcc57 | 1170 | if (r < 0) |
16f6025e LP |
1171 | return r; |
1172 | ||
495e75ed | 1173 | r = unit_watch_pidref(UNIT(s), &s->main_pid, /* exclusive= */ false); |
e8b509d3 | 1174 | if (r < 0) /* FIXME: we need to do something here */ |
b1f6901d | 1175 | return log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" for service: %m", s->main_pid.pid); |
034c6ed7 | 1176 | |
db256aab | 1177 | return 1; |
034c6ed7 LP |
1178 | } |
1179 | ||
783e05d6 | 1180 | static void service_search_main_pid(Service *s) { |
495e75ed | 1181 | _cleanup_(pidref_done) PidRef pid = PIDREF_NULL; |
4fbf50b3 LP |
1182 | int r; |
1183 | ||
1184 | assert(s); | |
1185 | ||
c79ab77c | 1186 | /* If we know it anyway, don't ever fall back to unreliable heuristics */ |
4fbf50b3 | 1187 | if (s->main_pid_known) |
783e05d6 | 1188 | return; |
4fbf50b3 | 1189 | |
3185a36b | 1190 | if (!s->guess_main_pid) |
783e05d6 | 1191 | return; |
3185a36b | 1192 | |
c79ab77c | 1193 | assert(!pidref_is_set(&s->main_pid)); |
4fbf50b3 | 1194 | |
783e05d6 ZJS |
1195 | if (unit_search_main_pid(UNIT(s), &pid) < 0) |
1196 | return; | |
4fbf50b3 | 1197 | |
495e75ed | 1198 | log_unit_debug(UNIT(s), "Main PID guessed: "PID_FMT, pid.pid); |
7e0e6b50 | 1199 | if (service_set_main_pidref(s, TAKE_PIDREF(pid), /* start_timestamp = */ NULL) < 0) |
783e05d6 | 1200 | return; |
4fbf50b3 | 1201 | |
495e75ed | 1202 | r = unit_watch_pidref(UNIT(s), &s->main_pid, /* exclusive= */ false); |
783e05d6 | 1203 | if (r < 0) |
4fbf50b3 | 1204 | /* FIXME: we need to do something here */ |
b1f6901d | 1205 | log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" from: %m", s->main_pid.pid); |
4fbf50b3 LP |
1206 | } |
1207 | ||
034c6ed7 LP |
1208 | static void service_set_state(Service *s, ServiceState state) { |
1209 | ServiceState old_state; | |
e056b01d | 1210 | const UnitActiveState *table; |
842129f5 | 1211 | |
5cb5a6ff LP |
1212 | assert(s); |
1213 | ||
6fcbec6f LP |
1214 | if (s->state != state) |
1215 | bus_unit_send_pending_change_signal(UNIT(s), false); | |
1216 | ||
e056b01d LP |
1217 | table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
1218 | ||
034c6ed7 | 1219 | old_state = s->state; |
5cb5a6ff | 1220 | s->state = state; |
034c6ed7 | 1221 | |
3a111838 MS |
1222 | service_unwatch_pid_file(s); |
1223 | ||
842129f5 | 1224 | if (!IN_SET(state, |
31cd5f63 | 1225 | SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, |
36c16a7c | 1226 | SERVICE_RUNNING, |
3bd28bf7 | 1227 | SERVICE_RELOAD, SERVICE_RELOAD_SIGNAL, SERVICE_RELOAD_NOTIFY, |
c87700a1 | 1228 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 1229 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL, |
4c2f5842 LP |
1230 | SERVICE_AUTO_RESTART, |
1231 | SERVICE_CLEANING)) | |
5dcadb4c | 1232 | s->timer_event_source = sd_event_source_disable_unref(s->timer_event_source); |
034c6ed7 | 1233 | |
94114711 | 1234 | if (!SERVICE_STATE_WITH_MAIN_PROCESS(state)) { |
5e94833f | 1235 | service_unwatch_main_pid(s); |
867b3b7d LP |
1236 | s->main_command = NULL; |
1237 | } | |
034c6ed7 | 1238 | |
94114711 | 1239 | if (!SERVICE_STATE_WITH_CONTROL_PROCESS(state)) { |
5e94833f | 1240 | service_unwatch_control_pid(s); |
034c6ed7 | 1241 | s->control_command = NULL; |
a16e1123 | 1242 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; |
e537352b | 1243 | } |
034c6ed7 | 1244 | |
a1d31573 LP |
1245 | if (IN_SET(state, |
1246 | SERVICE_DEAD, SERVICE_FAILED, | |
09d04ad3 | 1247 | SERVICE_DEAD_BEFORE_AUTO_RESTART, SERVICE_FAILED_BEFORE_AUTO_RESTART, SERVICE_AUTO_RESTART, SERVICE_AUTO_RESTART_QUEUED, |
b9c1883a | 1248 | SERVICE_DEAD_RESOURCES_PINNED)) { |
a911bb9a | 1249 | unit_unwatch_all_pids(UNIT(s)); |
50be4f4a LP |
1250 | unit_dequeue_rewatch_pids(UNIT(s)); |
1251 | } | |
a911bb9a | 1252 | |
5686391b | 1253 | if (state != SERVICE_START) |
5dcadb4c | 1254 | s->exec_fd_event_source = sd_event_source_disable_unref(s->exec_fd_event_source); |
5686391b | 1255 | |
3bd28bf7 | 1256 | if (!IN_SET(state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD, SERVICE_RELOAD_SIGNAL, SERVICE_RELOAD_NOTIFY)) |
a6927d7f MO |
1257 | service_stop_watchdog(s); |
1258 | ||
f6023656 LP |
1259 | /* For the inactive states unit_notify() will trim the cgroup, |
1260 | * but for exit we have to do that ourselves... */ | |
2c289ea8 | 1261 | if (state == SERVICE_EXITED && !MANAGER_IS_RELOADING(UNIT(s)->manager)) |
efdb0237 | 1262 | unit_prune_cgroup(UNIT(s)); |
f6023656 | 1263 | |
e537352b | 1264 | if (old_state != state) |
f2341e0a | 1265 | log_unit_debug(UNIT(s), "Changed %s -> %s", service_state_to_string(old_state), service_state_to_string(state)); |
acbb0225 | 1266 | |
96b09de5 | 1267 | unit_notify(UNIT(s), table[old_state], table[state], s->reload_result == SERVICE_SUCCESS); |
034c6ed7 LP |
1268 | } |
1269 | ||
36c16a7c LP |
1270 | static usec_t service_coldplug_timeout(Service *s) { |
1271 | assert(s); | |
1272 | ||
1273 | switch (s->deserialized_state) { | |
1274 | ||
31cd5f63 | 1275 | case SERVICE_CONDITION: |
36c16a7c LP |
1276 | case SERVICE_START_PRE: |
1277 | case SERVICE_START: | |
1278 | case SERVICE_START_POST: | |
1279 | case SERVICE_RELOAD: | |
3bd28bf7 LP |
1280 | case SERVICE_RELOAD_SIGNAL: |
1281 | case SERVICE_RELOAD_NOTIFY: | |
36c16a7c LP |
1282 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->timeout_start_usec); |
1283 | ||
1284 | case SERVICE_RUNNING: | |
5918a933 | 1285 | return service_running_timeout(s); |
36c16a7c LP |
1286 | |
1287 | case SERVICE_STOP: | |
36c16a7c LP |
1288 | case SERVICE_STOP_SIGTERM: |
1289 | case SERVICE_STOP_SIGKILL: | |
1290 | case SERVICE_STOP_POST: | |
1291 | case SERVICE_FINAL_SIGTERM: | |
1292 | case SERVICE_FINAL_SIGKILL: | |
1293 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->timeout_stop_usec); | |
1294 | ||
dc653bf4 | 1295 | case SERVICE_STOP_WATCHDOG: |
bf760801 | 1296 | case SERVICE_FINAL_WATCHDOG: |
dc653bf4 JK |
1297 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, service_timeout_abort_usec(s)); |
1298 | ||
36c16a7c | 1299 | case SERVICE_AUTO_RESTART: |
5171356e | 1300 | return usec_add(UNIT(s)->inactive_enter_timestamp.monotonic, service_restart_usec_next(s)); |
36c16a7c | 1301 | |
4c2f5842 | 1302 | case SERVICE_CLEANING: |
12213aed | 1303 | return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->exec_context.timeout_clean_usec); |
4c2f5842 | 1304 | |
36c16a7c LP |
1305 | default: |
1306 | return USEC_INFINITY; | |
1307 | } | |
1308 | } | |
1309 | ||
be847e82 | 1310 | static int service_coldplug(Unit *u) { |
a16e1123 LP |
1311 | Service *s = SERVICE(u); |
1312 | int r; | |
1313 | ||
1314 | assert(s); | |
1315 | assert(s->state == SERVICE_DEAD); | |
1316 | ||
930d2838 LP |
1317 | if (s->deserialized_state == s->state) |
1318 | return 0; | |
6c12b52e | 1319 | |
e5d6dcce | 1320 | r = service_arm_timer(s, /* relative= */ false, service_coldplug_timeout(s)); |
36c16a7c LP |
1321 | if (r < 0) |
1322 | return r; | |
a911bb9a | 1323 | |
c79ab77c | 1324 | if (pidref_is_set(&s->main_pid) && |
4d9f092b | 1325 | pidref_is_unwaited(&s->main_pid) > 0 && |
94114711 | 1326 | SERVICE_STATE_WITH_MAIN_PROCESS(s->deserialized_state)) { |
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 && |
94114711 | 1334 | SERVICE_STATE_WITH_CONTROL_PROCESS(s->deserialized_state)) { |
495e75ed | 1335 | r = unit_watch_pidref(UNIT(s), &s->control_pid, /* exclusive= */ false); |
930d2838 LP |
1336 | if (r < 0) |
1337 | return r; | |
a16e1123 | 1338 | } |
92c1622e | 1339 | |
a1d31573 LP |
1340 | if (!IN_SET(s->deserialized_state, |
1341 | SERVICE_DEAD, SERVICE_FAILED, | |
09d04ad3 | 1342 | SERVICE_DEAD_BEFORE_AUTO_RESTART, SERVICE_FAILED_BEFORE_AUTO_RESTART, SERVICE_AUTO_RESTART, SERVICE_AUTO_RESTART_QUEUED, |
b9c1883a LP |
1343 | SERVICE_CLEANING, |
1344 | SERVICE_DEAD_RESOURCES_PINNED)) { | |
50be4f4a | 1345 | (void) unit_enqueue_rewatch_pids(u); |
e8a565cb | 1346 | (void) unit_setup_exec_runtime(u); |
9cc54544 | 1347 | (void) unit_setup_cgroup_runtime(u); |
e8a565cb | 1348 | } |
29206d46 | 1349 | |
3bd28bf7 | 1350 | if (IN_SET(s->deserialized_state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD, SERVICE_RELOAD_SIGNAL, SERVICE_RELOAD_NOTIFY)) |
50be4f4a LP |
1351 | service_start_watchdog(s); |
1352 | ||
3ebcd323 ZJS |
1353 | if (UNIT_ISSET(s->accept_socket)) { |
1354 | Socket* socket = SOCKET(UNIT_DEREF(s->accept_socket)); | |
1355 | ||
1356 | if (socket->max_connections_per_source > 0) { | |
1357 | SocketPeer *peer; | |
1358 | ||
1359 | /* Make a best-effort attempt at bumping the connection count */ | |
1360 | if (socket_acquire_peer(socket, s->socket_fd, &peer) > 0) { | |
3fabebf4 LP |
1361 | socket_peer_unref(s->socket_peer); |
1362 | s->socket_peer = peer; | |
3ebcd323 ZJS |
1363 | } |
1364 | } | |
1365 | } | |
1366 | ||
930d2838 | 1367 | service_set_state(s, s->deserialized_state); |
a16e1123 LP |
1368 | return 0; |
1369 | } | |
1370 | ||
25b583d7 LP |
1371 | static int service_collect_fds( |
1372 | Service *s, | |
1373 | int **fds, | |
1374 | char ***fd_names, | |
1375 | size_t *n_socket_fds, | |
1376 | size_t *n_storage_fds) { | |
4c47affc | 1377 | |
8dd4c05b | 1378 | _cleanup_strv_free_ char **rfd_names = NULL; |
a354329f | 1379 | _cleanup_free_ int *rfds = NULL; |
25b583d7 | 1380 | size_t rn_socket_fds = 0, rn_storage_fds = 0; |
4c47affc | 1381 | int r; |
44d8db9e LP |
1382 | |
1383 | assert(s); | |
1384 | assert(fds); | |
8dd4c05b | 1385 | assert(fd_names); |
9b141911 | 1386 | assert(n_socket_fds); |
25b583d7 | 1387 | assert(n_storage_fds); |
44d8db9e | 1388 | |
8dd4c05b | 1389 | if (s->socket_fd >= 0) { |
6cf6bbc2 | 1390 | |
8dd4c05b | 1391 | /* Pass the per-connection socket */ |
57020a3a | 1392 | |
aa7c4dd6 | 1393 | rfds = newdup(int, &s->socket_fd, 1); |
8dd4c05b LP |
1394 | if (!rfds) |
1395 | return -ENOMEM; | |
57020a3a | 1396 | |
bea1a013 | 1397 | rfd_names = strv_new("connection"); |
8dd4c05b LP |
1398 | if (!rfd_names) |
1399 | return -ENOMEM; | |
44d8db9e | 1400 | |
4c47affc | 1401 | rn_socket_fds = 1; |
8dd4c05b | 1402 | } else { |
8dd4c05b | 1403 | Unit *u; |
44d8db9e | 1404 | |
8dd4c05b | 1405 | /* Pass all our configured sockets for singleton services */ |
44d8db9e | 1406 | |
15ed3c3a | 1407 | UNIT_FOREACH_DEPENDENCY(u, UNIT(s), UNIT_ATOM_TRIGGERED_BY) { |
8dd4c05b | 1408 | _cleanup_free_ int *cfds = NULL; |
8dd4c05b | 1409 | int cn_fds; |
8d83e0c2 | 1410 | Socket *sock; |
44d8db9e | 1411 | |
8dd4c05b | 1412 | sock = SOCKET(u); |
469ff6b4 MY |
1413 | if (!sock) |
1414 | continue; | |
a354329f | 1415 | |
8dd4c05b LP |
1416 | cn_fds = socket_collect_fds(sock, &cfds); |
1417 | if (cn_fds < 0) | |
1418 | return cn_fds; | |
44d8db9e | 1419 | |
8dd4c05b LP |
1420 | if (cn_fds <= 0) |
1421 | continue; | |
79c7626d | 1422 | |
8dd4c05b | 1423 | if (!rfds) { |
1cc6c93a | 1424 | rfds = TAKE_PTR(cfds); |
4c47affc | 1425 | rn_socket_fds = cn_fds; |
8d83e0c2 MY |
1426 | } else if (!GREEDY_REALLOC_APPEND(rfds, rn_socket_fds, cfds, cn_fds)) |
1427 | return -ENOMEM; | |
8dd4c05b LP |
1428 | |
1429 | r = strv_extend_n(&rfd_names, socket_fdname(sock), cn_fds); | |
1430 | if (r < 0) | |
1431 | return r; | |
44d8db9e LP |
1432 | } |
1433 | } | |
1434 | ||
a354329f | 1435 | if (s->n_fd_store > 0) { |
25b583d7 | 1436 | size_t n_fds; |
8dd4c05b | 1437 | char **nl; |
a354329f LP |
1438 | int *t; |
1439 | ||
62d74c78 | 1440 | t = reallocarray(rfds, rn_socket_fds + s->n_fd_store, sizeof(int)); |
a354329f LP |
1441 | if (!t) |
1442 | return -ENOMEM; | |
1443 | ||
1444 | rfds = t; | |
8dd4c05b | 1445 | |
62d74c78 | 1446 | nl = reallocarray(rfd_names, rn_socket_fds + s->n_fd_store + 1, sizeof(char *)); |
8dd4c05b LP |
1447 | if (!nl) |
1448 | return -ENOMEM; | |
1449 | ||
1450 | rfd_names = nl; | |
4c47affc | 1451 | n_fds = rn_socket_fds; |
8dd4c05b LP |
1452 | |
1453 | LIST_FOREACH(fd_store, fs, s->fd_store) { | |
4c47affc FB |
1454 | rfds[n_fds] = fs->fd; |
1455 | rfd_names[n_fds] = strdup(strempty(fs->fdname)); | |
1456 | if (!rfd_names[n_fds]) | |
8dd4c05b LP |
1457 | return -ENOMEM; |
1458 | ||
4c47affc FB |
1459 | rn_storage_fds++; |
1460 | n_fds++; | |
8dd4c05b LP |
1461 | } |
1462 | ||
4c47affc | 1463 | rfd_names[n_fds] = NULL; |
a354329f LP |
1464 | } |
1465 | ||
1cc6c93a YW |
1466 | *fds = TAKE_PTR(rfds); |
1467 | *fd_names = TAKE_PTR(rfd_names); | |
9b141911 | 1468 | *n_socket_fds = rn_socket_fds; |
4c47affc | 1469 | *n_storage_fds = rn_storage_fds; |
3e33402a | 1470 | |
4c47affc | 1471 | return 0; |
44d8db9e LP |
1472 | } |
1473 | ||
5686391b LP |
1474 | static int service_allocate_exec_fd_event_source( |
1475 | Service *s, | |
1476 | int fd, | |
1477 | sd_event_source **ret_event_source) { | |
1478 | ||
1479 | _cleanup_(sd_event_source_unrefp) sd_event_source *source = NULL; | |
1480 | int r; | |
1481 | ||
1482 | assert(s); | |
1483 | assert(fd >= 0); | |
1484 | assert(ret_event_source); | |
1485 | ||
1486 | r = sd_event_add_io(UNIT(s)->manager->event, &source, fd, 0, service_dispatch_exec_io, s); | |
1487 | if (r < 0) | |
1488 | return log_unit_error_errno(UNIT(s), r, "Failed to allocate exec_fd event source: %m"); | |
1489 | ||
f3a269a9 LP |
1490 | /* This is a bit higher priority than SIGCHLD, to make sure we don't confuse the case "failed to |
1491 | * start" from the case "succeeded to start, but failed immediately after". */ | |
5686391b | 1492 | |
d42b61d2 | 1493 | r = sd_event_source_set_priority(source, EVENT_PRIORITY_EXEC_FD); |
5686391b LP |
1494 | if (r < 0) |
1495 | return log_unit_error_errno(UNIT(s), r, "Failed to adjust priority of exec_fd event source: %m"); | |
1496 | ||
bc989831 | 1497 | (void) sd_event_source_set_description(source, "service exec_fd"); |
5686391b LP |
1498 | |
1499 | r = sd_event_source_set_io_fd_own(source, true); | |
1500 | if (r < 0) | |
1501 | return log_unit_error_errno(UNIT(s), r, "Failed to pass ownership of fd to event source: %m"); | |
1502 | ||
1503 | *ret_event_source = TAKE_PTR(source); | |
1504 | return 0; | |
1505 | } | |
1506 | ||
1507 | static int service_allocate_exec_fd( | |
1508 | Service *s, | |
1509 | sd_event_source **ret_event_source, | |
e78695d4 | 1510 | int *ret_exec_fd) { |
5686391b | 1511 | |
71136404 | 1512 | _cleanup_close_pair_ int p[] = EBADF_PAIR; |
5686391b LP |
1513 | int r; |
1514 | ||
1515 | assert(s); | |
1516 | assert(ret_event_source); | |
1517 | assert(ret_exec_fd); | |
1518 | ||
1519 | if (pipe2(p, O_CLOEXEC|O_NONBLOCK) < 0) | |
1520 | return log_unit_error_errno(UNIT(s), errno, "Failed to allocate exec_fd pipe: %m"); | |
1521 | ||
1522 | r = service_allocate_exec_fd_event_source(s, p[0], ret_event_source); | |
1523 | if (r < 0) | |
1524 | return r; | |
1525 | ||
e78695d4 | 1526 | TAKE_FD(p[0]); |
5686391b LP |
1527 | *ret_exec_fd = TAKE_FD(p[1]); |
1528 | ||
1529 | return 0; | |
1530 | } | |
1531 | ||
6375bd20 JW |
1532 | static bool service_exec_needs_notify_socket(Service *s, ExecFlags flags) { |
1533 | assert(s); | |
1534 | ||
1535 | /* Notifications are accepted depending on the process and | |
1536 | * the access setting of the service: | |
1537 | * process: \ access: NONE MAIN EXEC ALL | |
1538 | * main no yes yes yes | |
1539 | * control no no yes yes | |
1540 | * other (forked) no no no yes */ | |
1541 | ||
1542 | if (flags & EXEC_IS_CONTROL) | |
1543 | /* A control process */ | |
19dff691 | 1544 | return IN_SET(service_get_notify_access(s), NOTIFY_EXEC, NOTIFY_ALL); |
6375bd20 JW |
1545 | |
1546 | /* We only spawn main processes and control processes, so any | |
1547 | * process that is not a control process is a main process */ | |
19dff691 | 1548 | return service_get_notify_access(s) != NOTIFY_NONE; |
6375bd20 JW |
1549 | } |
1550 | ||
95c81c55 LB |
1551 | static Service *service_get_triggering_service(Service *s) { |
1552 | Unit *candidate = NULL, *other; | |
cdebedb4 | 1553 | |
95c81c55 | 1554 | assert(s); |
cdebedb4 | 1555 | |
95c81c55 LB |
1556 | /* Return the service which triggered service 's', this means dependency |
1557 | * types which include the UNIT_ATOM_ON_{FAILURE,SUCCESS}_OF atoms. | |
cdebedb4 | 1558 | * |
95c81c55 LB |
1559 | * N.B. if there are multiple services which could trigger 's' via OnFailure= |
1560 | * or OnSuccess= then we return NULL. This is since we don't know from which | |
1561 | * one to propagate the exit status. */ | |
1562 | ||
1563 | UNIT_FOREACH_DEPENDENCY(other, UNIT(s), UNIT_ATOM_ON_FAILURE_OF) { | |
7a5049c7 ZJS |
1564 | if (candidate) |
1565 | goto have_other; | |
95c81c55 LB |
1566 | candidate = other; |
1567 | } | |
1568 | ||
1569 | UNIT_FOREACH_DEPENDENCY(other, UNIT(s), UNIT_ATOM_ON_SUCCESS_OF) { | |
7a5049c7 ZJS |
1570 | if (candidate) |
1571 | goto have_other; | |
95c81c55 | 1572 | candidate = other; |
cdebedb4 PM |
1573 | } |
1574 | ||
95c81c55 | 1575 | return SERVICE(candidate); |
7a5049c7 ZJS |
1576 | |
1577 | have_other: | |
1578 | log_unit_warning(UNIT(s), "multiple trigger source candidates for exit status propagation (%s, %s), skipping.", | |
1579 | candidate->id, other->id); | |
1580 | return NULL; | |
cdebedb4 PM |
1581 | } |
1582 | ||
cfbf7538 | 1583 | static ExecFlags service_exec_flags(ServiceExecCommand command_id, ExecFlags cred_flag) { |
81006ebb MY |
1584 | /* All service main/control processes honor sandboxing and namespacing options (except those |
1585 | explicitly excluded in service_spawn()) */ | |
1586 | ExecFlags flags = EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT; | |
1587 | ||
1588 | assert(command_id >= 0); | |
1589 | assert(command_id < _SERVICE_EXEC_COMMAND_MAX); | |
cfbf7538 MY |
1590 | assert((cred_flag & ~(EXEC_SETUP_CREDENTIALS_FRESH|EXEC_SETUP_CREDENTIALS)) == 0); |
1591 | assert((cred_flag != 0) == (command_id == SERVICE_EXEC_START)); | |
81006ebb MY |
1592 | |
1593 | /* Control processes spawned before main process also get tty access */ | |
fe760177 | 1594 | if (IN_SET(command_id, SERVICE_EXEC_CONDITION, SERVICE_EXEC_START_PRE, SERVICE_EXEC_START)) |
81006ebb MY |
1595 | flags |= EXEC_APPLY_TTY_STDIN; |
1596 | ||
cfbf7538 MY |
1597 | /* All start phases get access to credentials. ExecStartPre= gets a new credential store upon |
1598 | * every invocation, so that updating credential files through it works. When the first main process | |
1599 | * starts, passed creds become stable. Also see 'cred_flag'. */ | |
1600 | if (command_id == SERVICE_EXEC_START_PRE) | |
1601 | flags |= EXEC_SETUP_CREDENTIALS_FRESH; | |
1602 | if (command_id == SERVICE_EXEC_START_POST) | |
1221ba0f | 1603 | flags |= EXEC_SETUP_CREDENTIALS; |
81006ebb MY |
1604 | |
1605 | if (IN_SET(command_id, SERVICE_EXEC_START_PRE, SERVICE_EXEC_START)) | |
1606 | flags |= EXEC_SETENV_MONITOR_RESULT; | |
1607 | ||
1608 | if (command_id == SERVICE_EXEC_START) | |
cfbf7538 | 1609 | return flags|cred_flag|EXEC_PASS_FDS|EXEC_SET_WATCHDOG; |
81006ebb MY |
1610 | |
1611 | flags |= EXEC_IS_CONTROL; | |
1612 | ||
1613 | /* Put control processes spawned later than main process under .control sub-cgroup if appropriate */ | |
1614 | if (!IN_SET(command_id, SERVICE_EXEC_CONDITION, SERVICE_EXEC_START_PRE)) | |
1615 | flags |= EXEC_CONTROL_CGROUP; | |
1616 | ||
1617 | if (IN_SET(command_id, SERVICE_EXEC_STOP, SERVICE_EXEC_STOP_POST)) | |
1618 | flags |= EXEC_SETENV_RESULT; | |
1619 | ||
1620 | return flags; | |
1621 | } | |
1622 | ||
edbf8984 ZJS |
1623 | static int service_spawn_internal( |
1624 | const char *caller, | |
81a2b7ce LP |
1625 | Service *s, |
1626 | ExecCommand *c, | |
cfbf7538 | 1627 | ExecFlags flags, |
21b2ce39 | 1628 | usec_t timeout, |
c79ab77c | 1629 | PidRef *ret_pid) { |
81a2b7ce | 1630 | |
cfbf7538 | 1631 | _cleanup_(exec_params_shallow_clear) ExecParameters exec_params = EXEC_PARAMETERS_INIT(flags); |
5686391b | 1632 | _cleanup_(sd_event_source_unrefp) sd_event_source *exec_fd_source = NULL; |
c3f8a065 | 1633 | _cleanup_strv_free_ char **final_env = NULL, **our_env = NULL; |
c79ab77c | 1634 | _cleanup_(pidref_done) PidRef pidref = PIDREF_NULL; |
c3f8a065 | 1635 | size_t n_env = 0; |
8dd4c05b LP |
1636 | int r; |
1637 | ||
edbf8984 | 1638 | assert(caller); |
034c6ed7 LP |
1639 | assert(s); |
1640 | assert(c); | |
e78695d4 | 1641 | assert(ret_pid); |
034c6ed7 | 1642 | |
edbf8984 ZJS |
1643 | log_unit_debug(UNIT(s), "Will spawn child (%s): %s", caller, c->path); |
1644 | ||
78f93209 | 1645 | r = unit_prepare_exec(UNIT(s)); /* This realizes the cgroup, among other things */ |
3c7416b6 LP |
1646 | if (r < 0) |
1647 | return r; | |
1648 | ||
bc989831 ZJS |
1649 | assert(!s->exec_fd_event_source); |
1650 | ||
81006ebb | 1651 | if (FLAGS_SET(exec_params.flags, EXEC_IS_CONTROL)) { |
9c1a61ad LP |
1652 | /* If this is a control process, mask the permissions/chroot application if this is requested. */ |
1653 | if (s->permissions_start_only) | |
1703fa41 | 1654 | exec_params.flags &= ~EXEC_APPLY_SANDBOXING; |
9c1a61ad LP |
1655 | if (s->root_directory_start_only) |
1656 | exec_params.flags &= ~EXEC_APPLY_CHROOT; | |
1657 | } | |
1658 | ||
81006ebb | 1659 | if (FLAGS_SET(exec_params.flags, EXEC_PASS_FDS) || |
6cf6bbc2 LP |
1660 | s->exec_context.std_input == EXEC_INPUT_SOCKET || |
1661 | s->exec_context.std_output == EXEC_OUTPUT_SOCKET || | |
1662 | s->exec_context.std_error == EXEC_OUTPUT_SOCKET) { | |
1663 | ||
c3f8a065 LP |
1664 | r = service_collect_fds(s, |
1665 | &exec_params.fds, | |
1666 | &exec_params.fd_names, | |
1667 | &exec_params.n_socket_fds, | |
1668 | &exec_params.n_storage_fds); | |
8dd4c05b | 1669 | if (r < 0) |
36c16a7c | 1670 | return r; |
6cf6bbc2 | 1671 | |
cd48e23f RP |
1672 | exec_params.open_files = s->open_files; |
1673 | ||
07ff03d6 MY |
1674 | exec_params.flags |= EXEC_PASS_FDS; |
1675 | ||
c3f8a065 | 1676 | log_unit_debug(UNIT(s), "Passing %zu fds to service", exec_params.n_socket_fds + exec_params.n_storage_fds); |
4f2d528d | 1677 | } |
44d8db9e | 1678 | |
12001b1b | 1679 | if (!FLAGS_SET(exec_params.flags, EXEC_IS_CONTROL) && s->type == SERVICE_EXEC) { |
c3f8a065 | 1680 | r = service_allocate_exec_fd(s, &exec_fd_source, &exec_params.exec_fd); |
5686391b LP |
1681 | if (r < 0) |
1682 | return r; | |
1683 | } | |
1684 | ||
e5d6dcce | 1685 | r = service_arm_timer(s, /* relative= */ true, timeout); |
36c16a7c LP |
1686 | if (r < 0) |
1687 | return r; | |
034c6ed7 | 1688 | |
75b29fda | 1689 | our_env = new0(char*, 13); |
36c16a7c LP |
1690 | if (!our_env) |
1691 | return -ENOMEM; | |
c952c6ec | 1692 | |
81006ebb | 1693 | if (service_exec_needs_notify_socket(s, exec_params.flags)) { |
36c16a7c LP |
1694 | if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) |
1695 | return -ENOMEM; | |
c952c6ec | 1696 | |
3bdc25a4 | 1697 | exec_params.notify_socket = UNIT(s)->manager->notify_socket; |
75b29fda LP |
1698 | |
1699 | if (s->n_fd_store_max > 0) | |
1700 | if (asprintf(our_env + n_env++, "FDSTORE=%u", s->n_fd_store_max) < 0) | |
1701 | return -ENOMEM; | |
3bdc25a4 LP |
1702 | } |
1703 | ||
c79ab77c LP |
1704 | if (pidref_is_set(&s->main_pid)) |
1705 | if (asprintf(our_env + n_env++, "MAINPID="PID_FMT, s->main_pid.pid) < 0) | |
36c16a7c | 1706 | return -ENOMEM; |
2105e76a | 1707 | |
c39f1ce2 | 1708 | if (MANAGER_IS_USER(UNIT(s)->manager)) |
df0ff127 | 1709 | if (asprintf(our_env + n_env++, "MANAGERPID="PID_FMT, getpid_cached()) < 0) |
36c16a7c | 1710 | return -ENOMEM; |
97ae63e2 | 1711 | |
dcf3c3c3 LP |
1712 | if (s->pid_file) |
1713 | if (asprintf(our_env + n_env++, "PIDFILE=%s", s->pid_file) < 0) | |
1714 | return -ENOMEM; | |
1715 | ||
8dd4c05b | 1716 | if (s->socket_fd >= 0) { |
3b1c5241 SL |
1717 | union sockaddr_union sa; |
1718 | socklen_t salen = sizeof(sa); | |
1719 | ||
f56e7bfe LP |
1720 | /* If this is a per-connection service instance, let's set $REMOTE_ADDR and $REMOTE_PORT to something |
1721 | * useful. Note that we do this only when we are still connected at this point in time, which we might | |
1722 | * very well not be. Hence we ignore all errors when retrieving peer information (as that might result | |
1723 | * in ENOTCONN), and just use whate we can use. */ | |
f2dbd059 | 1724 | |
f56e7bfe LP |
1725 | if (getpeername(s->socket_fd, &sa.sa, &salen) >= 0 && |
1726 | IN_SET(sa.sa.sa_family, AF_INET, AF_INET6, AF_VSOCK)) { | |
3b1c5241 SL |
1727 | _cleanup_free_ char *addr = NULL; |
1728 | char *t; | |
882ac6e7 | 1729 | unsigned port; |
3b1c5241 SL |
1730 | |
1731 | r = sockaddr_pretty(&sa.sa, salen, true, false, &addr); | |
1732 | if (r < 0) | |
36c16a7c | 1733 | return r; |
3b1c5241 | 1734 | |
b910cc72 | 1735 | t = strjoin("REMOTE_ADDR=", addr); |
36c16a7c LP |
1736 | if (!t) |
1737 | return -ENOMEM; | |
3b1c5241 SL |
1738 | our_env[n_env++] = t; |
1739 | ||
882ac6e7 SH |
1740 | r = sockaddr_port(&sa.sa, &port); |
1741 | if (r < 0) | |
1742 | return r; | |
3b1c5241 | 1743 | |
36c16a7c LP |
1744 | if (asprintf(&t, "REMOTE_PORT=%u", port) < 0) |
1745 | return -ENOMEM; | |
3b1c5241 SL |
1746 | our_env[n_env++] = t; |
1747 | } | |
1748 | } | |
1749 | ||
95c81c55 LB |
1750 | Service *env_source = NULL; |
1751 | const char *monitor_prefix; | |
81006ebb | 1752 | if (FLAGS_SET(exec_params.flags, EXEC_SETENV_RESULT)) { |
95c81c55 LB |
1753 | env_source = s; |
1754 | monitor_prefix = ""; | |
81006ebb | 1755 | } else if (FLAGS_SET(exec_params.flags, EXEC_SETENV_MONITOR_RESULT)) { |
95c81c55 LB |
1756 | env_source = service_get_triggering_service(s); |
1757 | monitor_prefix = "MONITOR_"; | |
1758 | } | |
1759 | ||
1760 | if (env_source) { | |
1761 | if (asprintf(our_env + n_env++, "%sSERVICE_RESULT=%s", monitor_prefix, service_result_to_string(env_source->result)) < 0) | |
136dc4c4 LP |
1762 | return -ENOMEM; |
1763 | ||
95c81c55 LB |
1764 | if (env_source->main_exec_status.pid > 0 && |
1765 | dual_timestamp_is_set(&env_source->main_exec_status.exit_timestamp)) { | |
1766 | if (asprintf(our_env + n_env++, "%sEXIT_CODE=%s", monitor_prefix, sigchld_code_to_string(env_source->main_exec_status.code)) < 0) | |
136dc4c4 LP |
1767 | return -ENOMEM; |
1768 | ||
95c81c55 LB |
1769 | if (env_source->main_exec_status.code == CLD_EXITED) |
1770 | r = asprintf(our_env + n_env++, "%sEXIT_STATUS=%i", monitor_prefix, env_source->main_exec_status.status); | |
136dc4c4 | 1771 | else |
95c81c55 | 1772 | r = asprintf(our_env + n_env++, "%sEXIT_STATUS=%s", monitor_prefix, signal_to_string(env_source->main_exec_status.status)); |
136dc4c4 LP |
1773 | if (r < 0) |
1774 | return -ENOMEM; | |
1775 | } | |
cdebedb4 | 1776 | |
95c81c55 | 1777 | if (env_source != s) { |
81006ebb MY |
1778 | if (!sd_id128_is_null(UNIT(env_source)->invocation_id)) |
1779 | if (asprintf(our_env + n_env++, "%sINVOCATION_ID=" SD_ID128_FORMAT_STR, | |
1780 | monitor_prefix, SD_ID128_FORMAT_VAL(UNIT(env_source)->invocation_id)) < 0) | |
95c81c55 | 1781 | return -ENOMEM; |
95c81c55 LB |
1782 | |
1783 | if (asprintf(our_env + n_env++, "%sUNIT=%s", monitor_prefix, UNIT(env_source)->id) < 0) | |
1784 | return -ENOMEM; | |
cdebedb4 | 1785 | } |
136dc4c4 LP |
1786 | } |
1787 | ||
48b92b37 LB |
1788 | if (UNIT(s)->activation_details) { |
1789 | r = activation_details_append_env(UNIT(s)->activation_details, &our_env); | |
1790 | if (r < 0) | |
1791 | return r; | |
1792 | /* The number of env vars added here can vary, rather than keeping the allocation block in | |
1793 | * sync manually, these functions simply use the strv methods to append to it, so we need | |
1794 | * to update n_env when we are done in case of future usage. */ | |
1795 | n_env += r; | |
1796 | } | |
1797 | ||
1ad6e8b3 LP |
1798 | r = unit_set_exec_params(UNIT(s), &exec_params); |
1799 | if (r < 0) | |
1800 | return r; | |
3536f49e | 1801 | |
4ab3d29f | 1802 | final_env = strv_env_merge(exec_params.environment, our_env); |
36c16a7c LP |
1803 | if (!final_env) |
1804 | return -ENOMEM; | |
c952c6ec | 1805 | |
ac647978 | 1806 | /* System D-Bus needs nss-systemd disabled, so that we don't deadlock */ |
de90700f | 1807 | SET_FLAG(exec_params.flags, EXEC_NSS_DYNAMIC_BYPASS, |
ac647978 | 1808 | MANAGER_IS_SYSTEM(UNIT(s)->manager) && unit_has_name(UNIT(s), SPECIAL_DBUS_SERVICE)); |
4ad49000 | 1809 | |
b9c04eaf | 1810 | strv_free_and_replace(exec_params.environment, final_env); |
34b3f625 | 1811 | exec_params.watchdog_usec = service_get_watchdog_usec(s); |
a34ceba6 | 1812 | exec_params.selinux_context_net = s->socket_fd_selinux_context_net; |
9fa95f85 DM |
1813 | if (s->type == SERVICE_IDLE) |
1814 | exec_params.idle_pipe = UNIT(s)->manager->idle_pipe; | |
a34ceba6 LP |
1815 | exec_params.stdin_fd = s->stdin_fd; |
1816 | exec_params.stdout_fd = s->stdout_fd; | |
1817 | exec_params.stderr_fd = s->stderr_fd; | |
9fa95f85 | 1818 | |
f2341e0a LP |
1819 | r = exec_spawn(UNIT(s), |
1820 | c, | |
9e2f7c11 | 1821 | &s->exec_context, |
9fa95f85 | 1822 | &exec_params, |
613b411c | 1823 | s->exec_runtime, |
6bb00842 | 1824 | &s->cgroup_context, |
556d2bc4 | 1825 | &pidref); |
9e2f7c11 | 1826 | if (r < 0) |
36c16a7c | 1827 | return r; |
034c6ed7 | 1828 | |
5686391b LP |
1829 | s->exec_fd_event_source = TAKE_PTR(exec_fd_source); |
1830 | s->exec_fd_hot = false; | |
1831 | ||
495e75ed | 1832 | r = unit_watch_pidref(UNIT(s), &pidref, /* exclusive= */ true); |
c79ab77c LP |
1833 | if (r < 0) |
1834 | return r; | |
034c6ed7 | 1835 | |
c79ab77c | 1836 | *ret_pid = TAKE_PIDREF(pidref); |
5cb5a6ff | 1837 | return 0; |
034c6ed7 LP |
1838 | } |
1839 | ||
80876c20 LP |
1840 | static int main_pid_good(Service *s) { |
1841 | assert(s); | |
1842 | ||
51894d70 | 1843 | /* Returns 0 if the pid is dead, > 0 if it is good, < 0 if we don't know */ |
80876c20 | 1844 | |
c79ab77c | 1845 | /* If we know the pid file, then let's just check if it is still valid */ |
6dfa5494 LP |
1846 | if (s->main_pid_known) { |
1847 | ||
c79ab77c LP |
1848 | /* If it's an alien child let's check if it is still alive ... */ |
1849 | if (s->main_pid_alien && pidref_is_set(&s->main_pid)) | |
becdfcb9 | 1850 | return pidref_is_alive(&s->main_pid); |
6dfa5494 | 1851 | |
c79ab77c LP |
1852 | /* .. otherwise assume we'll get a SIGCHLD for it, which we really should wait for to collect |
1853 | * exit status and code */ | |
1854 | return pidref_is_set(&s->main_pid); | |
6dfa5494 | 1855 | } |
80876c20 LP |
1856 | |
1857 | /* We don't know the pid */ | |
1858 | return -EAGAIN; | |
1859 | } | |
1860 | ||
019be286 | 1861 | static int control_pid_good(Service *s) { |
80876c20 LP |
1862 | assert(s); |
1863 | ||
07697d7e LP |
1864 | /* Returns 0 if the control PID is dead, > 0 if it is good. We never actually return < 0 here, but in order to |
1865 | * make this function as similar as possible to main_pid_good() and cgroup_good(), we pretend that < 0 also | |
1866 | * means: we can't figure it out. */ | |
1867 | ||
c79ab77c | 1868 | return pidref_is_set(&s->control_pid); |
80876c20 LP |
1869 | } |
1870 | ||
cb0e818f HC |
1871 | static int cgroup_good(Service *s) { |
1872 | int r; | |
1873 | ||
abaf5edd ZJS |
1874 | assert(s); |
1875 | ||
cb0e818f HC |
1876 | /* Returns 0 if the cgroup is empty or doesn't exist, > 0 if it is exists and is populated, < 0 if we can't |
1877 | * figure it out */ | |
1878 | ||
9cc54544 | 1879 | if (!s->cgroup_runtime || !s->cgroup_runtime->cgroup_path) |
abaf5edd ZJS |
1880 | return 0; |
1881 | ||
9cc54544 | 1882 | r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, s->cgroup_runtime->cgroup_path); |
117dcc57 | 1883 | if (r < 0) |
80876c20 LP |
1884 | return r; |
1885 | ||
b13ddbbc | 1886 | return r == 0; |
80876c20 LP |
1887 | } |
1888 | ||
ebc57b89 | 1889 | static bool service_shall_restart(Service *s, const char **reason) { |
a509f0e6 | 1890 | assert(s); |
189a08e8 | 1891 | assert(reason); |
a509f0e6 LP |
1892 | |
1893 | /* Don't restart after manual stops */ | |
ebc57b89 ZJS |
1894 | if (s->forbid_restart) { |
1895 | *reason = "manual stop"; | |
a509f0e6 | 1896 | return false; |
ebc57b89 | 1897 | } |
a509f0e6 LP |
1898 | |
1899 | /* Never restart if this is configured as special exception */ | |
ebc57b89 ZJS |
1900 | if (exit_status_set_test(&s->restart_prevent_status, s->main_exec_status.code, s->main_exec_status.status)) { |
1901 | *reason = "prevented by exit status"; | |
a509f0e6 | 1902 | return false; |
ebc57b89 | 1903 | } |
a509f0e6 LP |
1904 | |
1905 | /* Restart if the exit code/status are configured as restart triggers */ | |
ebc57b89 | 1906 | if (exit_status_set_test(&s->restart_force_status, s->main_exec_status.code, s->main_exec_status.status)) { |
189a08e8 MY |
1907 | /* Don't allow Type=oneshot services to restart on success. Note that Restart=always/on-success |
1908 | * is already rejected in service_verify. */ | |
1909 | if (s->type == SERVICE_ONESHOT && s->result == SERVICE_SUCCESS) { | |
1910 | *reason = "service type and exit status"; | |
1911 | return false; | |
1912 | } | |
1913 | ||
ebc57b89 | 1914 | *reason = "forced by exit status"; |
a509f0e6 | 1915 | return true; |
ebc57b89 | 1916 | } |
a509f0e6 | 1917 | |
ebc57b89 | 1918 | *reason = "restart setting"; |
a509f0e6 LP |
1919 | switch (s->restart) { |
1920 | ||
1921 | case SERVICE_RESTART_NO: | |
1922 | return false; | |
1923 | ||
1924 | case SERVICE_RESTART_ALWAYS: | |
abb99360 | 1925 | return s->result != SERVICE_SKIP_CONDITION; |
a509f0e6 LP |
1926 | |
1927 | case SERVICE_RESTART_ON_SUCCESS: | |
1928 | return s->result == SERVICE_SUCCESS; | |
1929 | ||
1930 | case SERVICE_RESTART_ON_FAILURE: | |
bb924478 | 1931 | return !IN_SET(s->result, SERVICE_SUCCESS, SERVICE_SKIP_CONDITION); |
a509f0e6 LP |
1932 | |
1933 | case SERVICE_RESTART_ON_ABNORMAL: | |
bb924478 | 1934 | return !IN_SET(s->result, SERVICE_SUCCESS, SERVICE_FAILURE_EXIT_CODE, SERVICE_SKIP_CONDITION); |
a509f0e6 LP |
1935 | |
1936 | case SERVICE_RESTART_ON_WATCHDOG: | |
1937 | return s->result == SERVICE_FAILURE_WATCHDOG; | |
1938 | ||
1939 | case SERVICE_RESTART_ON_ABORT: | |
1940 | return IN_SET(s->result, SERVICE_FAILURE_SIGNAL, SERVICE_FAILURE_CORE_DUMP); | |
1941 | ||
1942 | default: | |
04499a70 | 1943 | assert_not_reached(); |
a509f0e6 LP |
1944 | } |
1945 | } | |
1946 | ||
deb4e708 MK |
1947 | static bool service_will_restart(Unit *u) { |
1948 | Service *s = SERVICE(u); | |
1949 | ||
53f47dfc YW |
1950 | assert(s); |
1951 | ||
09d04ad3 | 1952 | if (IN_SET(s->state, SERVICE_DEAD_BEFORE_AUTO_RESTART, SERVICE_FAILED_BEFORE_AUTO_RESTART, SERVICE_AUTO_RESTART, SERVICE_AUTO_RESTART_QUEUED)) |
53f47dfc | 1953 | return true; |
2ad2e41a | 1954 | |
52a12341 | 1955 | return unit_will_restart_default(u); |
53f47dfc YW |
1956 | } |
1957 | ||
b9c1883a LP |
1958 | static ServiceState service_determine_dead_state(Service *s) { |
1959 | assert(s); | |
1960 | ||
1961 | return s->fd_store && s->fd_store_preserve_mode == EXEC_PRESERVE_YES ? SERVICE_DEAD_RESOURCES_PINNED : SERVICE_DEAD; | |
1962 | } | |
1963 | ||
f42806df | 1964 | static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) { |
a1d31573 | 1965 | ServiceState end_state, restart_state; |
034c6ed7 | 1966 | int r; |
0f52f8e5 | 1967 | |
034c6ed7 LP |
1968 | assert(s); |
1969 | ||
0f52f8e5 LP |
1970 | /* If there's a stop job queued before we enter the DEAD state, we shouldn't act on Restart=, in order to not |
1971 | * undo what has already been enqueued. */ | |
1972 | if (unit_stop_pending(UNIT(s))) | |
1973 | allow_restart = false; | |
1974 | ||
a0fef983 | 1975 | if (s->result == SERVICE_SUCCESS) |
f42806df | 1976 | s->result = f; |
034c6ed7 | 1977 | |
31cd5f63 AZ |
1978 | if (s->result == SERVICE_SUCCESS) { |
1979 | unit_log_success(UNIT(s)); | |
b9c1883a | 1980 | end_state = service_determine_dead_state(s); |
a1d31573 | 1981 | restart_state = SERVICE_DEAD_BEFORE_AUTO_RESTART; |
31cd5f63 AZ |
1982 | } else if (s->result == SERVICE_SKIP_CONDITION) { |
1983 | unit_log_skip(UNIT(s), service_result_to_string(s->result)); | |
b9c1883a | 1984 | end_state = service_determine_dead_state(s); |
8959e17d | 1985 | restart_state = _SERVICE_STATE_INVALID; /* Never restart if skipped due to condition failure */ |
31cd5f63 AZ |
1986 | } else { |
1987 | unit_log_failure(UNIT(s), service_result_to_string(s->result)); | |
1988 | end_state = SERVICE_FAILED; | |
a1d31573 | 1989 | restart_state = SERVICE_FAILED_BEFORE_AUTO_RESTART; |
31cd5f63 | 1990 | } |
4c425434 | 1991 | unit_warn_leftover_processes(UNIT(s), unit_log_leftover_process_stop); |
ed77d407 | 1992 | |
ebc57b89 ZJS |
1993 | if (!allow_restart) |
1994 | log_unit_debug(UNIT(s), "Service restart not allowed."); | |
1995 | else { | |
1996 | const char *reason; | |
ebc57b89 | 1997 | |
49b34f75 | 1998 | allow_restart = service_shall_restart(s, &reason); |
ebc57b89 | 1999 | log_unit_debug(UNIT(s), "Service will %srestart (%s)", |
49b34f75 | 2000 | allow_restart ? "" : "not ", |
ebc57b89 | 2001 | reason); |
ebc57b89 | 2002 | } |
deb4e708 | 2003 | |
49b34f75 | 2004 | if (allow_restart) { |
fe3d33c1 MY |
2005 | usec_t restart_usec_next; |
2006 | ||
8959e17d MY |
2007 | assert(restart_state >= 0 && restart_state < _SERVICE_STATE_MAX); |
2008 | ||
a1d31573 | 2009 | /* We make two state changes here: one that maps to the high-level UNIT_INACTIVE/UNIT_FAILED |
c309b9e9 | 2010 | * state (i.e. a state indicating deactivation), and then one that maps to the |
a1d31573 LP |
2011 | * high-level UNIT_STARTING state (i.e. a state indicating activation). We do this so that |
2012 | * external software can watch the state changes and see all service failures, even if they | |
2013 | * are only transitionary and followed by an automatic restart. We have fine-grained | |
2014 | * low-level states for this though so that software can distinguish the permanent UNIT_INACTIVE | |
2015 | * state from this transitionary UNIT_INACTIVE state by looking at the low-level states. */ | |
e568fea9 RP |
2016 | if (s->restart_mode != SERVICE_RESTART_MODE_DIRECT) |
2017 | service_set_state(s, restart_state); | |
a1d31573 | 2018 | |
fe3d33c1 MY |
2019 | restart_usec_next = service_restart_usec_next(s); |
2020 | ||
2021 | r = service_arm_timer(s, /* relative= */ true, restart_usec_next); | |
10691b9e LP |
2022 | if (r < 0) { |
2023 | log_unit_warning_errno(UNIT(s), r, "Failed to install restart timer: %m"); | |
d9b8d86b | 2024 | return service_enter_dead(s, SERVICE_FAILURE_RESOURCES, /* allow_restart= */ false); |
10691b9e | 2025 | } |
034c6ed7 | 2026 | |
fe3d33c1 MY |
2027 | log_unit_debug(UNIT(s), "Next restart interval calculated as: %s", FORMAT_TIMESPAN(restart_usec_next, 0)); |
2028 | ||
034c6ed7 | 2029 | service_set_state(s, SERVICE_AUTO_RESTART); |
a1d31573 LP |
2030 | } else { |
2031 | service_set_state(s, end_state); | |
2032 | ||
7a0019d3 LP |
2033 | /* If we shan't restart, then flush out the restart counter. But don't do that immediately, so that the |
2034 | * user can still introspect the counter. Do so on the next start. */ | |
2035 | s->flush_n_restarts = true; | |
a1d31573 | 2036 | } |
034c6ed7 | 2037 | |
5238e957 | 2038 | /* 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 | 2039 | * queue, so that the fd store is possibly gc'ed again */ |
7eb2a8a1 LP |
2040 | unit_add_to_gc_queue(UNIT(s)); |
2041 | ||
f2341e0a | 2042 | /* The next restart might not be a manual stop, hence reset the flag indicating manual stops */ |
47342320 LP |
2043 | s->forbid_restart = false; |
2044 | ||
19dff691 MY |
2045 | /* Reset NotifyAccess override */ |
2046 | s->notify_access_override = _NOTIFY_ACCESS_INVALID; | |
2047 | ||
9c0c6701 | 2048 | /* We want fresh tmpdirs and ephemeral snapshots in case the service is started again immediately. */ |
28135da3 | 2049 | s->exec_runtime = exec_runtime_destroy(s->exec_runtime); |
c17ec25e | 2050 | |
95939aed | 2051 | /* Also, remove the runtime directory */ |
bb0c0d6f | 2052 | unit_destroy_runtime_data(UNIT(s), &s->exec_context); |
e66cf1a3 | 2053 | |
b9c1883a LP |
2054 | /* Also get rid of the fd store, if that's configured. */ |
2055 | if (s->fd_store_preserve_mode == EXEC_PRESERVE_NO) | |
2056 | service_release_fd_store(s); | |
2057 | ||
00d9ef85 LP |
2058 | /* Get rid of the IPC bits of the user */ |
2059 | unit_unref_uid_gid(UNIT(s), true); | |
2060 | ||
9285c9ff LN |
2061 | /* Try to delete the pid file. At this point it will be |
2062 | * out-of-date, and some software might be confused by it, so | |
2063 | * let's remove it. */ | |
2064 | if (s->pid_file) | |
fabab190 | 2065 | (void) unlink(s->pid_file); |
9285c9ff | 2066 | |
6f765baf LP |
2067 | /* Reset TTY ownership if necessary */ |
2068 | exec_context_revert_tty(&s->exec_context); | |
034c6ed7 LP |
2069 | } |
2070 | ||
f42806df | 2071 | static void service_enter_stop_post(Service *s, ServiceResult f) { |
034c6ed7 LP |
2072 | int r; |
2073 | assert(s); | |
2074 | ||
a0fef983 | 2075 | if (s->result == SERVICE_SUCCESS) |
f42806df | 2076 | s->result = f; |
034c6ed7 | 2077 | |
5e94833f | 2078 | service_unwatch_control_pid(s); |
50be4f4a | 2079 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
5e94833f | 2080 | |
117dcc57 ZJS |
2081 | s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST]; |
2082 | if (s->control_command) { | |
867b3b7d | 2083 | s->control_command_id = SERVICE_EXEC_STOP_POST; |
c79ab77c | 2084 | pidref_done(&s->control_pid); |
867b3b7d | 2085 | |
ecedd90f LP |
2086 | r = service_spawn(s, |
2087 | s->control_command, | |
cfbf7538 | 2088 | service_exec_flags(s->control_command_id, /* cred_flag = */ 0), |
21b2ce39 | 2089 | s->timeout_stop_usec, |
ecedd90f | 2090 | &s->control_pid); |
10691b9e LP |
2091 | if (r < 0) { |
2092 | log_unit_warning_errno(UNIT(s), r, "Failed to spawn 'stop-post' task: %m"); | |
2093 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); | |
2094 | return; | |
2095 | } | |
034c6ed7 | 2096 | |
80876c20 LP |
2097 | service_set_state(s, SERVICE_STOP_POST); |
2098 | } else | |
ac84d1fb | 2099 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
2100 | } |
2101 | ||
a232ebcc | 2102 | static int state_to_kill_operation(Service *s, ServiceState state) { |
4940c0b0 LP |
2103 | switch (state) { |
2104 | ||
c87700a1 | 2105 | case SERVICE_STOP_WATCHDOG: |
bf760801 | 2106 | case SERVICE_FINAL_WATCHDOG: |
c87700a1 | 2107 | return KILL_WATCHDOG; |
4940c0b0 LP |
2108 | |
2109 | case SERVICE_STOP_SIGTERM: | |
a232ebcc ZJS |
2110 | if (unit_has_job_type(UNIT(s), JOB_RESTART)) |
2111 | return KILL_RESTART; | |
2112 | _fallthrough_; | |
2113 | ||
4940c0b0 LP |
2114 | case SERVICE_FINAL_SIGTERM: |
2115 | return KILL_TERMINATE; | |
2116 | ||
2117 | case SERVICE_STOP_SIGKILL: | |
2118 | case SERVICE_FINAL_SIGKILL: | |
2119 | return KILL_KILL; | |
2120 | ||
2121 | default: | |
2122 | return _KILL_OPERATION_INVALID; | |
2123 | } | |
2124 | } | |
2125 | ||
f42806df | 2126 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) { |
bf760801 | 2127 | int kill_operation, r; |
034c6ed7 LP |
2128 | |
2129 | assert(s); | |
2130 | ||
a0fef983 | 2131 | if (s->result == SERVICE_SUCCESS) |
f42806df | 2132 | s->result = f; |
034c6ed7 | 2133 | |
50be4f4a LP |
2134 | /* Before sending any signal, make sure we track all members of this cgroup */ |
2135 | (void) unit_watch_all_pids(UNIT(s)); | |
2136 | ||
2137 | /* Also, enqueue a job that we recheck all our PIDs a bit later, given that it's likely some processes have | |
2138 | * died now */ | |
2139 | (void) unit_enqueue_rewatch_pids(UNIT(s)); | |
a911bb9a | 2140 | |
bf760801 | 2141 | kill_operation = state_to_kill_operation(s, state); |
b826e317 | 2142 | r = unit_kill_context(UNIT(s), kill_operation); |
10691b9e LP |
2143 | if (r < 0) { |
2144 | log_unit_warning_errno(UNIT(s), r, "Failed to kill processes: %m"); | |
cd2086fe | 2145 | goto fail; |
10691b9e | 2146 | } |
034c6ed7 | 2147 | |
cd2086fe | 2148 | if (r > 0) { |
e5d6dcce LP |
2149 | r = service_arm_timer(s, /* relative= */ true, |
2150 | kill_operation == KILL_WATCHDOG ? service_timeout_abort_usec(s) : s->timeout_stop_usec); | |
10691b9e LP |
2151 | if (r < 0) { |
2152 | log_unit_warning_errno(UNIT(s), r, "Failed to install timer: %m"); | |
36c16a7c | 2153 | goto fail; |
10691b9e | 2154 | } |
d6ea93e3 | 2155 | |
80876c20 | 2156 | service_set_state(s, state); |
c87700a1 | 2157 | } else if (IN_SET(state, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM) && s->kill_context.send_sigkill) |
ac84d1fb | 2158 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_SUCCESS); |
c87700a1 | 2159 | else if (IN_SET(state, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 2160 | service_enter_stop_post(s, SERVICE_SUCCESS); |
bf760801 | 2161 | else if (IN_SET(state, SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM) && s->kill_context.send_sigkill) |
ac84d1fb | 2162 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_SUCCESS); |
80876c20 | 2163 | else |
10691b9e | 2164 | service_enter_dead(s, SERVICE_SUCCESS, /* allow_restart= */ true); |
034c6ed7 LP |
2165 | |
2166 | return; | |
2167 | ||
2168 | fail: | |
c87700a1 | 2169 | if (IN_SET(state, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL)) |
f42806df | 2170 | service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES); |
034c6ed7 | 2171 | else |
10691b9e | 2172 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, /* allow_restart= */ true); |
034c6ed7 LP |
2173 | } |
2174 | ||
308d72dc | 2175 | static void service_enter_stop_by_notify(Service *s) { |
3dde96d8 LP |
2176 | int r; |
2177 | ||
308d72dc LP |
2178 | assert(s); |
2179 | ||
50be4f4a | 2180 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
308d72dc | 2181 | |
3dde96d8 LP |
2182 | r = service_arm_timer(s, /* relative= */ true, s->timeout_stop_usec); |
2183 | if (r < 0) { | |
2184 | log_unit_warning_errno(UNIT(s), r, "Failed to install timer: %m"); | |
2185 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); | |
2186 | return; | |
2187 | } | |
308d72dc | 2188 | |
6041a7ee MS |
2189 | /* The service told us it's stopping, so it's as if we SIGTERM'd it. */ |
2190 | service_set_state(s, SERVICE_STOP_SIGTERM); | |
308d72dc LP |
2191 | } |
2192 | ||
f42806df | 2193 | static void service_enter_stop(Service *s, ServiceResult f) { |
034c6ed7 | 2194 | int r; |
5925dd3c | 2195 | |
034c6ed7 LP |
2196 | assert(s); |
2197 | ||
a0fef983 | 2198 | if (s->result == SERVICE_SUCCESS) |
f42806df | 2199 | s->result = f; |
034c6ed7 | 2200 | |
5e94833f | 2201 | service_unwatch_control_pid(s); |
50be4f4a | 2202 | (void) unit_enqueue_rewatch_pids(UNIT(s)); |
5e94833f | 2203 | |
117dcc57 ZJS |
2204 | s->control_command = s->exec_command[SERVICE_EXEC_STOP]; |
2205 | if (s->control_command) { | |
867b3b7d | 2206 | s->control_command_id = SERVICE_EXEC_STOP; |
c79ab77c | 2207 | pidref_done(&s->control_pid); |
867b3b7d | 2208 | |
ecedd90f LP |
2209 | r = service_spawn(s, |
2210 | s->control_command, | |
cfbf7538 | 2211 | service_exec_flags(s->control_command_id, /* cred_flag = */ 0), |
21b2ce39 | 2212 | s->timeout_stop_usec, |
ecedd90f | 2213 | &s->control_pid); |
10691b9e LP |
2214 | if (r < 0) { |
2215 | log_unit_warning_errno(UNIT(s), r, "Failed to spawn 'stop' task: %m"); | |
2216 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); | |
2217 | return; | |
2218 | } | |
034c6ed7 | 2219 | |
80876c20 LP |
2220 | service_set_state(s, SERVICE_STOP); |
2221 | } else | |
f42806df | 2222 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
034c6ed7 LP |
2223 | } |
2224 | ||
957c3cf9 LP |
2225 | static bool service_good(Service *s) { |
2226 | int main_pid_ok; | |
e9fa1bf7 | 2227 | |
957c3cf9 LP |
2228 | assert(s); |
2229 | ||
2230 | if (s->type == SERVICE_DBUS && !s->bus_name_good) | |
2231 | return false; | |
2232 | ||
2233 | main_pid_ok = main_pid_good(s); | |
2234 | if (main_pid_ok > 0) /* It's alive */ | |
2235 | return true; | |
ef430065 | 2236 | if (main_pid_ok == 0 && s->exit_type == SERVICE_EXIT_MAIN) /* It's dead */ |
957c3cf9 LP |
2237 | return false; |
2238 | ||
2239 | /* OK, we don't know anything about the main PID, maybe | |
2240 | * because there is none. Let's check the control group | |
2241 | * instead. */ | |
2242 | ||
2243 | return cgroup_good(s) != 0; | |
2244 | } | |
2245 | ||
f42806df | 2246 | static void service_enter_running(Service *s, ServiceResult f) { |
3dde96d8 LP |
2247 | int r; |
2248 | ||
80876c20 LP |
2249 | assert(s); |
2250 | ||
a0fef983 | 2251 | if (s->result == SERVICE_SUCCESS) |
f42806df | 2252 | s->result = f; |
80876c20 | 2253 | |
089b64d5 LP |
2254 | service_unwatch_control_pid(s); |
2255 | ||
ec5b1452 LP |
2256 | if (s->result != SERVICE_SUCCESS) |
2257 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); | |
2258 | else if (service_good(s)) { | |
308d72dc | 2259 | |
ec5b1452 | 2260 | /* If there are any queued up sd_notify() notifications, process them now */ |
308d72dc LP |
2261 | if (s->notify_state == NOTIFY_RELOADING) |
2262 | service_enter_reload_by_notify(s); | |
2263 | else if (s->notify_state == NOTIFY_STOPPING) | |
2264 | service_enter_stop_by_notify(s); | |
36c16a7c | 2265 | else { |
308d72dc | 2266 | service_set_state(s, SERVICE_RUNNING); |
3dde96d8 LP |
2267 | |
2268 | r = service_arm_timer(s, /* relative= */ false, service_running_timeout(s)); | |
2269 | if (r < 0) { | |
2270 | log_unit_warning_errno(UNIT(s), r, "Failed to install timer: %m"); | |
2271 | service_enter_running(s, SERVICE_FAILURE_RESOURCES); | |
2272 | return; | |
2273 | } | |
36c16a7c | 2274 | } |
308d72dc | 2275 | |
ec5b1452 | 2276 | } else if (s->remain_after_exit) |
80876c20 LP |
2277 | service_set_state(s, SERVICE_EXITED); |
2278 | else | |
f42806df | 2279 | service_enter_stop(s, SERVICE_SUCCESS); |
80876c20 LP |
2280 | } |
2281 | ||
034c6ed7 LP |
2282 | static void service_enter_start_post(Service *s) { |
2283 | int r; | |
e9fa1bf7 | 2284 | |
034c6ed7 LP |
2285 | assert(s); |
2286 | ||
5e94833f | 2287 | service_unwatch_control_pid(s); |
842129f5 | 2288 | service_reset_watchdog(s); |
bb242b7b | 2289 | |
117dcc57 ZJS |
2290 | s->control_command = s->exec_command[SERVICE_EXEC_START_POST]; |
2291 | if (s->control_command) { | |
867b3b7d | 2292 | s->control_command_id = SERVICE_EXEC_START_POST; |
c79ab77c | 2293 | pidref_done(&s->control_pid); |
867b3b7d | 2294 | |
ecedd90f LP |
2295 | r = service_spawn(s, |
2296 | s->control_command, | |
cfbf7538 | 2297 | service_exec_flags(s->control_command_id, /* cred_flag = */ 0), |
21b2ce39 | 2298 | s->timeout_start_usec, |
ecedd90f | 2299 | &s->control_pid); |
10691b9e LP |
2300 | if (r < 0) { |
2301 | log_unit_warning_errno(UNIT(s), r, "Failed to spawn 'start-post' task: %m"); | |
2302 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); | |
2303 | return; | |
2304 | } | |
034c6ed7 | 2305 | |
80876c20 LP |
2306 | service_set_state(s, SERVICE_START_POST); |
2307 | } else | |
f42806df | 2308 | service_enter_running(s, SERVICE_SUCCESS); |
034c6ed7 LP |
2309 | } |
2310 | ||
e9a4f676 | 2311 | static void service_kill_control_process(Service *s) { |
a6951a50 | 2312 | int r; |
4ad49000 | 2313 | |
a6951a50 LP |
2314 | assert(s); |
2315 | ||
c79ab77c | 2316 | if (!pidref_is_set(&s->control_pid)) |
e9a4f676 | 2317 | return; |
4ad49000 | 2318 | |
c79ab77c | 2319 | r = pidref_kill_and_sigcont(&s->control_pid, SIGKILL); |
e9a4f676 LP |
2320 | if (r < 0) { |
2321 | _cleanup_free_ char *comm = NULL; | |
a6951a50 | 2322 | |
d7d74854 | 2323 | (void) pidref_get_comm(&s->control_pid, &comm); |
a6951a50 | 2324 | |
e9a4f676 | 2325 | log_unit_debug_errno(UNIT(s), r, "Failed to kill control process " PID_FMT " (%s), ignoring: %m", |
c79ab77c | 2326 | s->control_pid.pid, strna(comm)); |
a6951a50 | 2327 | } |
4ad49000 LP |
2328 | } |
2329 | ||
c53d2d54 DB |
2330 | static int service_adverse_to_leftover_processes(Service *s) { |
2331 | assert(s); | |
2332 | ||
2333 | /* KillMode=mixed and control group are used to indicate that all process should be killed off. | |
4c425434 LP |
2334 | * SendSIGKILL= is used for services that require a clean shutdown. These are typically database |
2335 | * service where a SigKilled process would result in a lengthy recovery and who's shutdown or startup | |
2336 | * time is quite variable (so Timeout settings aren't of use). | |
c53d2d54 DB |
2337 | * |
2338 | * Here we take these two factors and refuse to start a service if there are existing processes | |
2339 | * within a control group. Databases, while generally having some protection against multiple | |
4c425434 | 2340 | * instances running, lets not stress the rigor of these. Also ExecStartPre= parts of the service |
c53d2d54 | 2341 | * aren't as rigoriously written to protect aganst against multiple use. */ |
4c425434 LP |
2342 | |
2343 | if (unit_warn_leftover_processes(UNIT(s), unit_log_leftover_process_start) > 0 && | |
c53d2d54 | 2344 | IN_SET(s->kill_context.kill_mode, KILL_MIXED, KILL_CONTROL_GROUP) && |
569554d9 ZJS |
2345 | !s->kill_context.send_sigkill) |
2346 | return log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(EBUSY), | |
2347 | "Will not start SendSIGKILL=no service of type KillMode=control-group or mixed while processes exist"); | |
2348 | ||
c53d2d54 DB |
2349 | return 0; |
2350 | } | |
2351 | ||
034c6ed7 | 2352 | static void service_enter_start(Service *s) { |
c79ab77c | 2353 | _cleanup_(pidref_done) PidRef pidref = PIDREF_NULL; |
4ad49000 | 2354 | ExecCommand *c; |
36c16a7c | 2355 | usec_t timeout; |
034c6ed7 LP |
2356 | int r; |
2357 | ||
2358 | assert(s); | |
2359 | ||
41efeaec LP |
2360 | service_unwatch_control_pid(s); |
2361 | service_unwatch_main_pid(s); | |
80876c20 | 2362 | |
c53d2d54 DB |
2363 | r = service_adverse_to_leftover_processes(s); |
2364 | if (r < 0) | |
2365 | goto fail; | |
a4634b21 | 2366 | |
867b3b7d LP |
2367 | if (s->type == SERVICE_FORKING) { |
2368 | s->control_command_id = SERVICE_EXEC_START; | |
2369 | c = s->control_command = s->exec_command[SERVICE_EXEC_START]; | |
2370 | ||
2371 | s->main_command = NULL; | |
2372 | } else { | |
2373 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
2374 | s->control_command = NULL; | |
2375 | ||
2376 | c = s->main_command = s->exec_command[SERVICE_EXEC_START]; | |
2377 | } | |
34e9ba66 | 2378 | |
96fb8242 | 2379 | if (!c) { |
47fffb35 | 2380 | if (s->type != SERVICE_ONESHOT) { |
cbc056c8 ZJS |
2381 | /* There's no command line configured for the main command? Hmm, that is strange. |
2382 | * This can only happen if the configuration changes at runtime. In this case, | |
2383 | * let's enter a failure state. */ | |
d85ff944 | 2384 | r = log_unit_error_errno(UNIT(s), SYNTHETIC_ERRNO(ENXIO), "There's no 'start' task anymore we could start."); |
47fffb35 LP |
2385 | goto fail; |
2386 | } | |
2387 | ||
ef5ae8e7 ZJS |
2388 | /* We force a fake state transition here. Otherwise, the unit would go directly from |
2389 | * SERVICE_DEAD to SERVICE_DEAD without SERVICE_ACTIVATING or SERVICE_ACTIVE | |
5238e957 | 2390 | * in between. This way we can later trigger actions that depend on the state |
ef5ae8e7 ZJS |
2391 | * transition, including SuccessAction=. */ |
2392 | service_set_state(s, SERVICE_START); | |
2393 | ||
96fb8242 LP |
2394 | service_enter_start_post(s); |
2395 | return; | |
2396 | } | |
2397 | ||
36c16a7c LP |
2398 | if (IN_SET(s->type, SERVICE_SIMPLE, SERVICE_IDLE)) |
2399 | /* For simple + idle this is the main process. We don't apply any timeout here, but | |
2400 | * service_enter_running() will later apply the .runtime_max_usec timeout. */ | |
2401 | timeout = USEC_INFINITY; | |
2402 | else | |
2403 | timeout = s->timeout_start_usec; | |
2404 | ||
ecedd90f LP |
2405 | r = service_spawn(s, |
2406 | c, | |
cfbf7538 | 2407 | service_exec_flags(SERVICE_EXEC_START, EXEC_SETUP_CREDENTIALS_FRESH), |
36c16a7c | 2408 | timeout, |
c79ab77c | 2409 | &pidref); |
10691b9e LP |
2410 | if (r < 0) { |
2411 | log_unit_warning_errno(UNIT(s), r, "Failed to spawn 'start' task: %m"); | |
034c6ed7 | 2412 | goto fail; |
10691b9e | 2413 | } |
034c6ed7 | 2414 | |
026335e9 | 2415 | assert(pidref.pid == c->exec_status.pid); |
034c6ed7 | 2416 | |
026335e9 | 2417 | switch (s->type) { |
034c6ed7 | 2418 | |
026335e9 MY |
2419 | case SERVICE_SIMPLE: |
2420 | case SERVICE_IDLE: | |
2421 | /* For simple services we immediately start the START_POST binaries. */ | |
2422 | (void) service_set_main_pidref(s, TAKE_PIDREF(pidref), &c->exec_status.start_timestamp); | |
2423 | return service_enter_start_post(s); | |
034c6ed7 | 2424 | |
026335e9 MY |
2425 | case SERVICE_FORKING: |
2426 | /* For forking services we wait until the start process exited. */ | |
c79ab77c LP |
2427 | pidref_done(&s->control_pid); |
2428 | s->control_pid = TAKE_PIDREF(pidref); | |
026335e9 MY |
2429 | return service_set_state(s, SERVICE_START); |
2430 | ||
2431 | case SERVICE_ONESHOT: /* For oneshot services we wait until the start process exited, too, but it is our main process. */ | |
2432 | case SERVICE_EXEC: | |
2433 | case SERVICE_DBUS: | |
2434 | case SERVICE_NOTIFY: | |
2435 | case SERVICE_NOTIFY_RELOAD: | |
2436 | /* For D-Bus services we know the main pid right away, but wait for the bus name to appear | |
2437 | * on the bus. 'notify' and 'exec' services wait for readiness notification and EOF | |
2438 | * on exec_fd, respectively. */ | |
7e0e6b50 | 2439 | (void) service_set_main_pidref(s, TAKE_PIDREF(pidref), &c->exec_status.start_timestamp); |
026335e9 | 2440 | return service_set_state(s, SERVICE_START); |
034c6ed7 | 2441 | |
026335e9 | 2442 | default: |
ae1cb17c | 2443 | assert_not_reached(); |
026335e9 MY |
2444 | } |
2445 | ||
034c6ed7 | 2446 | fail: |
c3fda31d | 2447 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
034c6ed7 LP |
2448 | } |
2449 | ||
2450 | static void service_enter_start_pre(Service *s) { | |
2451 | int r; | |
2452 | ||
2453 | assert(s); | |
2454 | ||
5e94833f LP |
2455 | service_unwatch_control_pid(s); |
2456 | ||
117dcc57 ZJS |
2457 | s->control_command = s->exec_command[SERVICE_EXEC_START_PRE]; |
2458 | if (s->control_command) { | |
8f53a7b8 | 2459 | |
c53d2d54 DB |
2460 | r = service_adverse_to_leftover_processes(s); |
2461 | if (r < 0) | |
2462 | goto fail; | |
a4634b21 | 2463 | |
867b3b7d LP |
2464 | s->control_command_id = SERVICE_EXEC_START_PRE; |
2465 | ||
ecedd90f LP |
2466 | r = service_spawn(s, |
2467 | s->control_command, | |
cfbf7538 | 2468 | service_exec_flags(s->control_command_id, /* cred_flag = */ 0), |
21b2ce39 | 2469 | s->timeout_start_usec, |
ecedd90f | 2470 | &s->control_pid); |
10691b9e LP |
2471 | if (r < 0) { |
2472 | log_unit_warning_errno(UNIT(s), r, "Failed to spawn 'start-pre' task: %m"); | |
034c6ed7 | 2473 | goto fail; |
10691b9e | 2474 | } |
034c6ed7 | 2475 | |
80876c20 LP |
2476 | service_set_state(s, SERVICE_START_PRE); |
2477 | } else | |
034c6ed7 LP |
2478 | service_enter_start(s); |
2479 | ||
2480 | return; | |
2481 | ||
2482 | fail: | |
10691b9e | 2483 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, /* allow_restart= */ true); |
034c6ed7 LP |
2484 | } |
2485 | ||
31cd5f63 AZ |
2486 | static void service_enter_condition(Service *s) { |
2487 | int r; | |
2488 | ||
2489 | assert(s); | |
2490 | ||
2491 | service_unwatch_control_pid(s); | |
2492 | ||
2493 | s->control_command = s->exec_command[SERVICE_EXEC_CONDITION]; | |
2494 | if (s->control_command) { | |
2495 | ||
2496 | r = service_adverse_to_leftover_processes(s); | |
2497 | if (r < 0) | |
2498 | goto fail; | |
2499 | ||
2500 | s->control_command_id = SERVICE_EXEC_CONDITION; | |
c79ab77c | 2501 | pidref_done(&s->control_pid); |
31cd5f63 AZ |
2502 | |
2503 | r = service_spawn(s, | |
2504 | s->control_command, | |
cfbf7538 | 2505 | service_exec_flags(s->control_command_id, /* cred_flag = */ 0), |
31cd5f63 | 2506 | s->timeout_start_usec, |
31cd5f63 | 2507 | &s->control_pid); |
10691b9e LP |
2508 | if (r < 0) { |
2509 | log_unit_warning_errno(UNIT(s), r, "Failed to spawn 'exec-condition' task: %m"); | |
31cd5f63 | 2510 | goto fail; |
10691b9e | 2511 | } |
31cd5f63 AZ |
2512 | |
2513 | service_set_state(s, SERVICE_CONDITION); | |
2514 | } else | |
2515 | service_enter_start_pre(s); | |
2516 | ||
2517 | return; | |
2518 | ||
2519 | fail: | |
10691b9e | 2520 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, /* allow_restart= */ true); |
31cd5f63 AZ |
2521 | } |
2522 | ||
034c6ed7 | 2523 | static void service_enter_restart(Service *s) { |
4afd3348 | 2524 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
034c6ed7 | 2525 | int r; |
398ef8ba | 2526 | |
034c6ed7 LP |
2527 | assert(s); |
2528 | ||
28a2dfe8 | 2529 | if (unit_has_job_type(UNIT(s), JOB_STOP)) { |
a8bb2e65 | 2530 | /* Don't restart things if we are going down anyway */ |
c9728806 | 2531 | log_unit_info(UNIT(s), "Stop job pending for unit, skipping automatic restart."); |
feae8adb | 2532 | return; |
2edfa366 LP |
2533 | } |
2534 | ||
09d04ad3 LP |
2535 | /* Any units that are bound to this service must also be restarted. We use JOB_START for ourselves |
2536 | * but then set JOB_RESTART_DEPENDENCIES which will enqueue JOB_RESTART for those dependency jobs. */ | |
2537 | r = manager_add_job(UNIT(s)->manager, JOB_START, UNIT(s), JOB_RESTART_DEPENDENCIES, NULL, &error, NULL); | |
10691b9e LP |
2538 | if (r < 0) { |
2539 | log_unit_warning(UNIT(s), "Failed to schedule restart job: %s", bus_error_message(&error, r)); | |
2540 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, /* allow_restart= */ false); | |
2541 | return; | |
2542 | } | |
034c6ed7 | 2543 | |
0c59d2e4 LP |
2544 | /* Count the jobs we enqueue for restarting. This counter is maintained as long as the unit isn't |
2545 | * fully stopped, i.e. as long as it remains up or remains in auto-start states. The user can reset | |
2546 | * the counter explicitly however via the usual "systemctl reset-failure" logic. */ | |
b3a9d980 | 2547 | s->n_restarts++; |
7a0019d3 LP |
2548 | s->flush_n_restarts = false; |
2549 | ||
c2503e35 RH |
2550 | log_unit_struct(UNIT(s), LOG_INFO, |
2551 | "MESSAGE_ID=" SD_MESSAGE_UNIT_RESTART_SCHEDULED_STR, | |
2552 | LOG_UNIT_INVOCATION_ID(UNIT(s)), | |
92663a5e ZJS |
2553 | LOG_UNIT_MESSAGE(UNIT(s), |
2554 | "Scheduled restart job, restart counter is at %u.", s->n_restarts), | |
c2503e35 | 2555 | "N_RESTARTS=%u", s->n_restarts); |
7a0019d3 | 2556 | |
09d04ad3 LP |
2557 | service_set_state(s, SERVICE_AUTO_RESTART_QUEUED); |
2558 | ||
7a0019d3 LP |
2559 | /* Notify clients about changed restart counter */ |
2560 | unit_add_to_dbus_queue(UNIT(s)); | |
034c6ed7 LP |
2561 | } |
2562 | ||
308d72dc | 2563 | static void service_enter_reload_by_notify(Service *s) { |
15d167f8 JW |
2564 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
2565 | int r; | |
2566 | ||
308d72dc LP |
2567 | assert(s); |
2568 | ||
3dde96d8 LP |
2569 | r = service_arm_timer(s, /* relative= */ true, s->timeout_start_usec); |
2570 | if (r < 0) { | |
2571 | log_unit_warning_errno(UNIT(s), r, "Failed to install timer: %m"); | |
2572 | s->reload_result = SERVICE_FAILURE_RESOURCES; | |
2573 | service_enter_running(s, SERVICE_SUCCESS); | |
2574 | return; | |
2575 | } | |
2576 | ||
3bd28bf7 | 2577 | service_set_state(s, SERVICE_RELOAD_NOTIFY); |
15d167f8 JW |
2578 | |
2579 | /* service_enter_reload_by_notify is never called during a reload, thus no loops are possible. */ | |
2580 | r = manager_propagate_reload(UNIT(s)->manager, UNIT(s), JOB_FAIL, &error); | |
2581 | if (r < 0) | |
3dde96d8 | 2582 | log_unit_warning(UNIT(s), "Failed to schedule propagation of reload, ignoring: %s", bus_error_message(&error, r)); |
308d72dc LP |
2583 | } |
2584 | ||
034c6ed7 | 2585 | static void service_enter_reload(Service *s) { |
3bd28bf7 | 2586 | bool killed = false; |
034c6ed7 LP |
2587 | int r; |
2588 | ||
2589 | assert(s); | |
2590 | ||
5e94833f | 2591 | service_unwatch_control_pid(s); |
95c906ae | 2592 | s->reload_result = SERVICE_SUCCESS; |
5e94833f | 2593 | |
3bd28bf7 LP |
2594 | usec_t ts = now(CLOCK_MONOTONIC); |
2595 | ||
c79ab77c LP |
2596 | if (s->type == SERVICE_NOTIFY_RELOAD && pidref_is_set(&s->main_pid)) { |
2597 | r = pidref_kill_and_sigcont(&s->main_pid, s->reload_signal); | |
3bd28bf7 LP |
2598 | if (r < 0) { |
2599 | log_unit_warning_errno(UNIT(s), r, "Failed to send reload signal: %m"); | |
2600 | goto fail; | |
2601 | } | |
2602 | ||
2603 | killed = true; | |
2604 | } | |
2605 | ||
117dcc57 ZJS |
2606 | s->control_command = s->exec_command[SERVICE_EXEC_RELOAD]; |
2607 | if (s->control_command) { | |
867b3b7d | 2608 | s->control_command_id = SERVICE_EXEC_RELOAD; |
c79ab77c | 2609 | pidref_done(&s->control_pid); |
867b3b7d | 2610 | |
ecedd90f LP |
2611 | r = service_spawn(s, |
2612 | s->control_command, | |
cfbf7538 | 2613 | service_exec_flags(s->control_command_id, /* cred_flag = */ 0), |
21b2ce39 | 2614 | s->timeout_start_usec, |
ecedd90f | 2615 | &s->control_pid); |
3bd28bf7 | 2616 | if (r < 0) { |
10691b9e | 2617 | log_unit_warning_errno(UNIT(s), r, "Failed to spawn 'reload' task: %m"); |
034c6ed7 | 2618 | goto fail; |
3bd28bf7 | 2619 | } |
034c6ed7 | 2620 | |
80876c20 | 2621 | service_set_state(s, SERVICE_RELOAD); |
3bd28bf7 | 2622 | } else if (killed) { |
3dde96d8 LP |
2623 | r = service_arm_timer(s, /* relative= */ true, s->timeout_start_usec); |
2624 | if (r < 0) { | |
2625 | log_unit_warning_errno(UNIT(s), r, "Failed to install timer: %m"); | |
2626 | goto fail; | |
2627 | } | |
2628 | ||
3bd28bf7 LP |
2629 | service_set_state(s, SERVICE_RELOAD_SIGNAL); |
2630 | } else { | |
f42806df | 2631 | service_enter_running(s, SERVICE_SUCCESS); |
3bd28bf7 LP |
2632 | return; |
2633 | } | |
034c6ed7 | 2634 | |
3bd28bf7 LP |
2635 | /* Store the timestamp when we started reloading: when reloading via SIGHUP we won't leave the reload |
2636 | * state until we received both RELOADING=1 and READY=1 with MONOTONIC_USEC= set to a value above | |
2637 | * this. Thus we know for sure the reload cycle was executed *after* we requested it, and is not one | |
2638 | * that was already in progress before. */ | |
2639 | s->reload_begin_usec = ts; | |
034c6ed7 LP |
2640 | return; |
2641 | ||
2642 | fail: | |
f42806df LP |
2643 | s->reload_result = SERVICE_FAILURE_RESOURCES; |
2644 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
2645 | } |
2646 | ||
f42806df | 2647 | static void service_run_next_control(Service *s) { |
36c16a7c | 2648 | usec_t timeout; |
034c6ed7 LP |
2649 | int r; |
2650 | ||
2651 | assert(s); | |
2652 | assert(s->control_command); | |
2653 | assert(s->control_command->command_next); | |
2654 | ||
34e9ba66 | 2655 | assert(s->control_command_id != SERVICE_EXEC_START); |
034c6ed7 | 2656 | |
34e9ba66 | 2657 | s->control_command = s->control_command->command_next; |
5e94833f LP |
2658 | service_unwatch_control_pid(s); |
2659 | ||
31cd5f63 | 2660 | if (IN_SET(s->state, SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) |
36c16a7c LP |
2661 | timeout = s->timeout_start_usec; |
2662 | else | |
2663 | timeout = s->timeout_stop_usec; | |
2664 | ||
c79ab77c LP |
2665 | pidref_done(&s->control_pid); |
2666 | ||
ecedd90f LP |
2667 | r = service_spawn(s, |
2668 | s->control_command, | |
cfbf7538 | 2669 | service_exec_flags(s->control_command_id, /* cred_flag = */ 0), |
36c16a7c | 2670 | timeout, |
ecedd90f | 2671 | &s->control_pid); |
10691b9e LP |
2672 | if (r < 0) { |
2673 | log_unit_warning_errno(UNIT(s), r, "Failed to spawn next control task: %m"); | |
2674 | ||
2675 | if (IN_SET(s->state, SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START_POST, SERVICE_STOP)) | |
2676 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); | |
2677 | else if (s->state == SERVICE_STOP_POST) | |
2678 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, /* allow_restart= */ true); | |
2679 | else if (s->state == SERVICE_RELOAD) { | |
2680 | s->reload_result = SERVICE_FAILURE_RESOURCES; | |
2681 | service_enter_running(s, SERVICE_SUCCESS); | |
2682 | } else | |
2683 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); | |
2684 | } | |
5cb5a6ff LP |
2685 | } |
2686 | ||
f42806df | 2687 | static void service_run_next_main(Service *s) { |
c79ab77c | 2688 | _cleanup_(pidref_done) PidRef pidref = PIDREF_NULL; |
34e9ba66 LP |
2689 | int r; |
2690 | ||
2691 | assert(s); | |
867b3b7d LP |
2692 | assert(s->main_command); |
2693 | assert(s->main_command->command_next); | |
2694 | assert(s->type == SERVICE_ONESHOT); | |
34e9ba66 | 2695 | |
867b3b7d | 2696 | s->main_command = s->main_command->command_next; |
34e9ba66 LP |
2697 | service_unwatch_main_pid(s); |
2698 | ||
ecedd90f LP |
2699 | r = service_spawn(s, |
2700 | s->main_command, | |
cfbf7538 | 2701 | service_exec_flags(SERVICE_EXEC_START, EXEC_SETUP_CREDENTIALS), |
21b2ce39 | 2702 | s->timeout_start_usec, |
c79ab77c | 2703 | &pidref); |
10691b9e LP |
2704 | if (r < 0) { |
2705 | log_unit_warning_errno(UNIT(s), r, "Failed to spawn next main task: %m"); | |
2706 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); | |
2707 | return; | |
2708 | } | |
34e9ba66 | 2709 | |
7e0e6b50 | 2710 | (void) service_set_main_pidref(s, TAKE_PIDREF(pidref), &s->main_command->exec_status.start_timestamp); |
34e9ba66 LP |
2711 | } |
2712 | ||
87f0e418 LP |
2713 | static int service_start(Unit *u) { |
2714 | Service *s = SERVICE(u); | |
07299350 | 2715 | int r; |
5cb5a6ff LP |
2716 | |
2717 | assert(s); | |
2718 | ||
034c6ed7 LP |
2719 | /* We cannot fulfill this request right now, try again later |
2720 | * please! */ | |
a00973af | 2721 | if (IN_SET(s->state, |
c87700a1 | 2722 | SERVICE_STOP, SERVICE_STOP_WATCHDOG, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, |
bf760801 | 2723 | SERVICE_FINAL_WATCHDOG, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL, SERVICE_CLEANING)) |
5cb5a6ff LP |
2724 | return -EAGAIN; |
2725 | ||
034c6ed7 | 2726 | /* Already on it! */ |
31cd5f63 | 2727 | if (IN_SET(s->state, SERVICE_CONDITION, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST)) |
034c6ed7 LP |
2728 | return 0; |
2729 | ||
a1d31573 LP |
2730 | /* A service that will be restarted must be stopped first to trigger BindsTo and/or OnFailure |
2731 | * dependencies. If a user does not want to wait for the holdoff time to elapse, the service should | |
2732 | * be manually restarted, not started. We simply return EAGAIN here, so that any start jobs stay | |
2733 | * queued, and assume that the auto restart timer will eventually trigger the restart. */ | |
2734 | if (IN_SET(s->state, SERVICE_AUTO_RESTART, SERVICE_DEAD_BEFORE_AUTO_RESTART, SERVICE_FAILED_BEFORE_AUTO_RESTART)) | |
a8bb2e65 | 2735 | return -EAGAIN; |
2e9d6c12 | 2736 | |
09d04ad3 | 2737 | assert(IN_SET(s->state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_DEAD_RESOURCES_PINNED, SERVICE_AUTO_RESTART_QUEUED)); |
5cb5a6ff | 2738 | |
4b58153d LP |
2739 | r = unit_acquire_invocation_id(u); |
2740 | if (r < 0) | |
2741 | return r; | |
2742 | ||
f42806df LP |
2743 | s->result = SERVICE_SUCCESS; |
2744 | s->reload_result = SERVICE_SUCCESS; | |
034c6ed7 | 2745 | s->main_pid_known = false; |
6dfa5494 | 2746 | s->main_pid_alien = false; |
47342320 | 2747 | s->forbid_restart = false; |
3c7416b6 | 2748 | |
a1e58e8e | 2749 | s->status_text = mfree(s->status_text); |
8cfdb077 LP |
2750 | s->status_errno = 0; |
2751 | ||
19dff691 | 2752 | s->notify_access_override = _NOTIFY_ACCESS_INVALID; |
308d72dc LP |
2753 | s->notify_state = NOTIFY_UNKNOWN; |
2754 | ||
aa8c4bbf | 2755 | s->watchdog_original_usec = s->watchdog_usec; |
2787d83c | 2756 | s->watchdog_override_enable = false; |
aa8c4bbf | 2757 | s->watchdog_override_usec = USEC_INFINITY; |
2787d83c | 2758 | |
6a1d4d9f LP |
2759 | exec_command_reset_status_list_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); |
2760 | exec_status_reset(&s->main_exec_status); | |
2761 | ||
7a0019d3 LP |
2762 | /* This is not an automatic restart? Flush the restart counter then */ |
2763 | if (s->flush_n_restarts) { | |
2764 | s->n_restarts = 0; | |
2765 | s->flush_n_restarts = false; | |
2766 | } | |
2767 | ||
9cc54544 LP |
2768 | CGroupRuntime *crt = unit_get_cgroup_runtime(u); |
2769 | if (crt) | |
2770 | crt->reset_accounting = true; | |
6a1d4d9f | 2771 | |
31cd5f63 | 2772 | service_enter_condition(s); |
82a2b6bb | 2773 | return 1; |
5cb5a6ff LP |
2774 | } |
2775 | ||
87f0e418 | 2776 | static int service_stop(Unit *u) { |
e9fa1bf7 | 2777 | Service *s = ASSERT_PTR(SERVICE(u)); |
5cb5a6ff | 2778 | |
a509f0e6 | 2779 | /* Don't create restart jobs from manual stops. */ |
47342320 | 2780 | s->forbid_restart = true; |
034c6ed7 | 2781 | |
a1d31573 LP |
2782 | switch (s->state) { |
2783 | ||
2784 | case SERVICE_STOP: | |
2785 | case SERVICE_STOP_SIGTERM: | |
2786 | case SERVICE_STOP_SIGKILL: | |
2787 | case SERVICE_STOP_POST: | |
2788 | case SERVICE_FINAL_WATCHDOG: | |
2789 | case SERVICE_FINAL_SIGTERM: | |
2790 | case SERVICE_FINAL_SIGKILL: | |
2791 | /* Already on it */ | |
e537352b LP |
2792 | return 0; |
2793 | ||
a1d31573 | 2794 | case SERVICE_AUTO_RESTART: |
09d04ad3 LP |
2795 | case SERVICE_AUTO_RESTART_QUEUED: |
2796 | /* Give up on the auto restart */ | |
b9c1883a | 2797 | service_set_state(s, service_determine_dead_state(s)); |
034c6ed7 | 2798 | return 0; |
034c6ed7 | 2799 | |
a1d31573 LP |
2800 | case SERVICE_CONDITION: |
2801 | case SERVICE_START_PRE: | |
2802 | case SERVICE_START: | |
2803 | case SERVICE_START_POST: | |
2804 | case SERVICE_RELOAD: | |
2805 | case SERVICE_RELOAD_SIGNAL: | |
2806 | case SERVICE_RELOAD_NOTIFY: | |
2807 | case SERVICE_STOP_WATCHDOG: | |
2808 | /* If there's already something running we go directly into kill mode. */ | |
f42806df | 2809 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); |
3f6c78dc | 2810 | return 0; |
5cb5a6ff | 2811 | |
a1d31573 LP |
2812 | case SERVICE_CLEANING: |
2813 | /* If we are currently cleaning, then abort it, brutally. */ | |
4c2f5842 LP |
2814 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_SUCCESS); |
2815 | return 0; | |
a1d31573 LP |
2816 | |
2817 | case SERVICE_RUNNING: | |
2818 | case SERVICE_EXITED: | |
2819 | service_enter_stop(s, SERVICE_SUCCESS); | |
2820 | return 1; | |
2821 | ||
2822 | case SERVICE_DEAD_BEFORE_AUTO_RESTART: | |
2823 | case SERVICE_FAILED_BEFORE_AUTO_RESTART: | |
2824 | case SERVICE_DEAD: | |
2825 | case SERVICE_FAILED: | |
b9c1883a | 2826 | case SERVICE_DEAD_RESOURCES_PINNED: |
a1d31573 LP |
2827 | default: |
2828 | /* Unknown state, or unit_stop() should already have handled these */ | |
2829 | assert_not_reached(); | |
4c2f5842 | 2830 | } |
5cb5a6ff LP |
2831 | } |
2832 | ||
87f0e418 | 2833 | static int service_reload(Unit *u) { |
e9fa1bf7 | 2834 | Service *s = ASSERT_PTR(SERVICE(u)); |
034c6ed7 | 2835 | |
3742095b | 2836 | assert(IN_SET(s->state, SERVICE_RUNNING, SERVICE_EXITED)); |
034c6ed7 LP |
2837 | |
2838 | service_enter_reload(s); | |
2d018ae2 | 2839 | return 1; |
5cb5a6ff LP |
2840 | } |
2841 | ||
d1e8e8b5 | 2842 | static bool service_can_reload(Unit *u) { |
e9fa1bf7 | 2843 | Service *s = ASSERT_PTR(SERVICE(u)); |
034c6ed7 | 2844 | |
3bd28bf7 LP |
2845 | return s->exec_command[SERVICE_EXEC_RELOAD] || |
2846 | s->type == SERVICE_NOTIFY_RELOAD; | |
034c6ed7 LP |
2847 | } |
2848 | ||
502096b5 | 2849 | static unsigned service_exec_command_index(Unit *u, ServiceExecCommand id, const ExecCommand *current) { |
e266c068 MS |
2850 | Service *s = SERVICE(u); |
2851 | unsigned idx = 0; | |
e266c068 MS |
2852 | |
2853 | assert(s); | |
5b99bd5f LP |
2854 | assert(id >= 0); |
2855 | assert(id < _SERVICE_EXEC_COMMAND_MAX); | |
e266c068 | 2856 | |
502096b5 | 2857 | const ExecCommand *first = s->exec_command[id]; |
e266c068 MS |
2858 | |
2859 | /* Figure out where we are in the list by walking back to the beginning */ | |
502096b5 | 2860 | for (const ExecCommand *c = current; c != first; c = c->command_prev) |
e266c068 MS |
2861 | idx++; |
2862 | ||
2863 | return idx; | |
2864 | } | |
2865 | ||
502096b5 | 2866 | static int service_serialize_exec_command(Unit *u, FILE *f, const ExecCommand *command) { |
e9fa1bf7 | 2867 | Service *s = ASSERT_PTR(SERVICE(u)); |
d68c645b | 2868 | _cleanup_free_ char *args = NULL, *p = NULL; |
d68c645b | 2869 | const char *type, *key; |
e266c068 | 2870 | ServiceExecCommand id; |
319a4f4b | 2871 | size_t length = 0; |
e266c068 | 2872 | unsigned idx; |
e266c068 | 2873 | |
e266c068 MS |
2874 | assert(f); |
2875 | ||
2876 | if (!command) | |
2877 | return 0; | |
2878 | ||
2879 | if (command == s->control_command) { | |
2880 | type = "control"; | |
2881 | id = s->control_command_id; | |
2882 | } else { | |
2883 | type = "main"; | |
2884 | id = SERVICE_EXEC_START; | |
2885 | } | |
2886 | ||
2887 | idx = service_exec_command_index(u, id, command); | |
2888 | ||
2889 | STRV_FOREACH(arg, command->argv) { | |
e266c068 | 2890 | _cleanup_free_ char *e = NULL; |
d68c645b | 2891 | size_t n; |
e266c068 | 2892 | |
d68c645b | 2893 | e = cescape(*arg); |
e266c068 | 2894 | if (!e) |
d68c645b | 2895 | return log_oom(); |
e266c068 MS |
2896 | |
2897 | n = strlen(e); | |
319a4f4b | 2898 | if (!GREEDY_REALLOC(args, length + 2 + n + 2)) |
d68c645b | 2899 | return log_oom(); |
e266c068 MS |
2900 | |
2901 | if (length > 0) | |
2902 | args[length++] = ' '; | |
2903 | ||
334c0979 | 2904 | args[length++] = '"'; |
e266c068 MS |
2905 | memcpy(args + length, e, n); |
2906 | length += n; | |
334c0979 | 2907 | args[length++] = '"'; |
e266c068 MS |
2908 | } |
2909 | ||
319a4f4b | 2910 | if (!GREEDY_REALLOC(args, length + 1)) |
d68c645b LP |
2911 | return log_oom(); |
2912 | ||
e266c068 MS |
2913 | args[length++] = 0; |
2914 | ||
d68c645b | 2915 | p = cescape(command->path); |
e266c068 | 2916 | if (!p) |
5b99bd5f | 2917 | return log_oom(); |
e266c068 | 2918 | |
d68c645b | 2919 | key = strjoina(type, "-command"); |
a99bd455 ZJS |
2920 | |
2921 | /* We use '+1234' instead of '1234' to mark the last command in a sequence. | |
2922 | * This is used in service_deserialize_exec_command(). */ | |
2923 | (void) serialize_item_format( | |
2924 | f, key, | |
2925 | "%s %s%u %s %s", | |
2926 | service_exec_command_to_string(id), | |
2927 | command->command_next ? "" : "+", | |
2928 | idx, | |
2929 | p, args); | |
5b99bd5f LP |
2930 | |
2931 | return 0; | |
e266c068 MS |
2932 | } |
2933 | ||
a16e1123 | 2934 | static int service_serialize(Unit *u, FILE *f, FDSet *fds) { |
e9fa1bf7 | 2935 | Service *s = ASSERT_PTR(SERVICE(u)); |
a34ceba6 | 2936 | int r; |
a16e1123 | 2937 | |
a16e1123 LP |
2938 | assert(f); |
2939 | assert(fds); | |
2940 | ||
d68c645b LP |
2941 | (void) serialize_item(f, "state", service_state_to_string(s->state)); |
2942 | (void) serialize_item(f, "result", service_result_to_string(s->result)); | |
2943 | (void) serialize_item(f, "reload-result", service_result_to_string(s->reload_result)); | |
a16e1123 | 2944 | |
2a7451dc LP |
2945 | (void) serialize_pidref(f, fds, "control-pid", &s->control_pid); |
2946 | if (s->main_pid_known) | |
2947 | (void) serialize_pidref(f, fds, "main-pid", &s->main_pid); | |
a16e1123 | 2948 | |
d68c645b LP |
2949 | (void) serialize_bool(f, "main-pid-known", s->main_pid_known); |
2950 | (void) serialize_bool(f, "bus-name-good", s->bus_name_good); | |
2951 | (void) serialize_bool(f, "bus-name-owner", s->bus_name_owner); | |
a16e1123 | 2952 | |
d68c645b LP |
2953 | (void) serialize_item_format(f, "n-restarts", "%u", s->n_restarts); |
2954 | (void) serialize_bool(f, "flush-n-restarts", s->flush_n_restarts); | |
7a0019d3 | 2955 | |
d68c645b | 2956 | r = serialize_item_escaped(f, "status-text", s->status_text); |
a34ceba6 LP |
2957 | if (r < 0) |
2958 | return r; | |
3a2776bc | 2959 | |
e266c068 MS |
2960 | service_serialize_exec_command(u, f, s->control_command); |
2961 | service_serialize_exec_command(u, f, s->main_command); | |
a16e1123 | 2962 | |
d68c645b | 2963 | r = serialize_fd(f, fds, "stdin-fd", s->stdin_fd); |
a34ceba6 LP |
2964 | if (r < 0) |
2965 | return r; | |
d68c645b | 2966 | r = serialize_fd(f, fds, "stdout-fd", s->stdout_fd); |
a34ceba6 LP |
2967 | if (r < 0) |
2968 | return r; | |
d68c645b | 2969 | r = serialize_fd(f, fds, "stderr-fd", s->stderr_fd); |
a34ceba6 LP |
2970 | if (r < 0) |
2971 | return r; | |
e44da745 | 2972 | |
5686391b | 2973 | if (s->exec_fd_event_source) { |
d68c645b | 2974 | r = serialize_fd(f, fds, "exec-fd", sd_event_source_get_io_fd(s->exec_fd_event_source)); |
5686391b LP |
2975 | if (r < 0) |
2976 | return r; | |
d68c645b LP |
2977 | |
2978 | (void) serialize_bool(f, "exec-fd-hot", s->exec_fd_hot); | |
5686391b LP |
2979 | } |
2980 | ||
9dfb64f8 | 2981 | if (UNIT_ISSET(s->accept_socket)) { |
d68c645b | 2982 | r = serialize_item(f, "accept-socket", UNIT_DEREF(s->accept_socket)->id); |
9dfb64f8 ZJS |
2983 | if (r < 0) |
2984 | return r; | |
2985 | } | |
2986 | ||
d68c645b | 2987 | r = serialize_fd(f, fds, "socket-fd", s->socket_fd); |
a34ceba6 LP |
2988 | if (r < 0) |
2989 | return r; | |
e44da745 | 2990 | |
2339fc93 | 2991 | LIST_FOREACH(fd_store, fs, s->fd_store) { |
8dd4c05b | 2992 | _cleanup_free_ char *c = NULL; |
2339fc93 LP |
2993 | int copy; |
2994 | ||
2995 | copy = fdset_put_dup(fds, fs->fd); | |
2996 | if (copy < 0) | |
d68c645b | 2997 | return log_error_errno(copy, "Failed to copy file descriptor for serialization: %m"); |
2339fc93 | 2998 | |
8dd4c05b | 2999 | c = cescape(fs->fdname); |
d68c645b LP |
3000 | if (!c) |
3001 | return log_oom(); | |
8dd4c05b | 3002 | |
9b85bf02 | 3003 | (void) serialize_item_format(f, "fd-store-fd", "%i \"%s\" %s", copy, c, one_zero(fs->do_poll)); |
2339fc93 LP |
3004 | } |
3005 | ||
ecdbca40 | 3006 | if (s->main_exec_status.pid > 0) { |
d68c645b LP |
3007 | (void) serialize_item_format(f, "main-exec-status-pid", PID_FMT, s->main_exec_status.pid); |
3008 | (void) serialize_dual_timestamp(f, "main-exec-status-start", &s->main_exec_status.start_timestamp); | |
3009 | (void) serialize_dual_timestamp(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp); | |
3c1d1ca1 | 3010 | (void) serialize_dual_timestamp(f, "main-exec-status-handoff", &s->main_exec_status.handoff_timestamp); |
ecdbca40 | 3011 | |
799fd0fd | 3012 | if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) { |
d68c645b LP |
3013 | (void) serialize_item_format(f, "main-exec-status-code", "%i", s->main_exec_status.code); |
3014 | (void) serialize_item_format(f, "main-exec-status-status", "%i", s->main_exec_status.status); | |
ecdbca40 LP |
3015 | } |
3016 | } | |
f06db334 | 3017 | |
19dff691 MY |
3018 | if (s->notify_access_override >= 0) |
3019 | (void) serialize_item(f, "notify-access-override", notify_access_to_string(s->notify_access_override)); | |
3020 | ||
d68c645b LP |
3021 | (void) serialize_dual_timestamp(f, "watchdog-timestamp", &s->watchdog_timestamp); |
3022 | (void) serialize_bool(f, "forbid-restart", s->forbid_restart); | |
6aca9a58 | 3023 | |
2787d83c | 3024 | if (s->watchdog_override_enable) |
d68c645b | 3025 | (void) serialize_item_format(f, "watchdog-override-usec", USEC_FMT, s->watchdog_override_usec); |
2787d83c | 3026 | |
aa8c4bbf LP |
3027 | if (s->watchdog_original_usec != USEC_INFINITY) |
3028 | (void) serialize_item_format(f, "watchdog-original-usec", USEC_FMT, s->watchdog_original_usec); | |
3029 | ||
3bd28bf7 LP |
3030 | if (s->reload_begin_usec != USEC_INFINITY) |
3031 | (void) serialize_item_format(f, "reload-begin-usec", USEC_FMT, s->reload_begin_usec); | |
3032 | ||
a16e1123 LP |
3033 | return 0; |
3034 | } | |
3035 | ||
35243b77 | 3036 | int service_deserialize_exec_command( |
5b99bd5f LP |
3037 | Unit *u, |
3038 | const char *key, | |
3039 | const char *value) { | |
3040 | ||
e9fa1bf7 | 3041 | Service *s = ASSERT_PTR(SERVICE(u)); |
e266c068 | 3042 | ExecCommand *command = NULL; |
e9fa1bf7 | 3043 | ServiceExecCommand id = _SERVICE_EXEC_COMMAND_INVALID; |
6eeec374 | 3044 | _cleanup_free_ char *path = NULL; |
e266c068 | 3045 | _cleanup_strv_free_ char **argv = NULL; |
e9fa1bf7 MY |
3046 | unsigned idx = 0, i; |
3047 | bool control, found = false, last = false; | |
3048 | int r; | |
e266c068 MS |
3049 | |
3050 | enum ExecCommandState { | |
3051 | STATE_EXEC_COMMAND_TYPE, | |
3052 | STATE_EXEC_COMMAND_INDEX, | |
3053 | STATE_EXEC_COMMAND_PATH, | |
3054 | STATE_EXEC_COMMAND_ARGS, | |
3055 | _STATE_EXEC_COMMAND_MAX, | |
2d93c20e | 3056 | _STATE_EXEC_COMMAND_INVALID = -EINVAL, |
e266c068 MS |
3057 | } state; |
3058 | ||
e266c068 MS |
3059 | assert(key); |
3060 | assert(value); | |
3061 | ||
3062 | control = streq(key, "control-command"); | |
3063 | ||
3064 | state = STATE_EXEC_COMMAND_TYPE; | |
3065 | ||
3066 | for (;;) { | |
3067 | _cleanup_free_ char *arg = NULL; | |
3068 | ||
334c0979 | 3069 | r = extract_first_word(&value, &arg, NULL, EXTRACT_CUNESCAPE | EXTRACT_UNQUOTE); |
efa3f34e LP |
3070 | if (r < 0) |
3071 | return r; | |
e266c068 MS |
3072 | if (r == 0) |
3073 | break; | |
e266c068 MS |
3074 | |
3075 | switch (state) { | |
3076 | case STATE_EXEC_COMMAND_TYPE: | |
3077 | id = service_exec_command_from_string(arg); | |
3078 | if (id < 0) | |
7211c853 | 3079 | return id; |
e266c068 MS |
3080 | |
3081 | state = STATE_EXEC_COMMAND_INDEX; | |
3082 | break; | |
3083 | case STATE_EXEC_COMMAND_INDEX: | |
a99bd455 ZJS |
3084 | /* PID 1234 is serialized as either '1234' or '+1234'. The second form is used to |
3085 | * mark the last command in a sequence. We warn if the deserialized command doesn't | |
3086 | * match what we have loaded from the unit, but we don't need to warn if that is the | |
3087 | * last command. */ | |
3088 | ||
e266c068 MS |
3089 | r = safe_atou(arg, &idx); |
3090 | if (r < 0) | |
7211c853 | 3091 | return r; |
a99bd455 | 3092 | last = arg[0] == '+'; |
e266c068 MS |
3093 | |
3094 | state = STATE_EXEC_COMMAND_PATH; | |
3095 | break; | |
3096 | case STATE_EXEC_COMMAND_PATH: | |
ae2a15bc | 3097 | path = TAKE_PTR(arg); |
e266c068 | 3098 | state = STATE_EXEC_COMMAND_ARGS; |
e266c068 MS |
3099 | break; |
3100 | case STATE_EXEC_COMMAND_ARGS: | |
3101 | r = strv_extend(&argv, arg); | |
3102 | if (r < 0) | |
010cd1dc | 3103 | return r; |
e266c068 MS |
3104 | break; |
3105 | default: | |
04499a70 | 3106 | assert_not_reached(); |
e266c068 MS |
3107 | } |
3108 | } | |
3109 | ||
3110 | if (state != STATE_EXEC_COMMAND_ARGS) | |
3111 | return -EINVAL; | |
90204792 ZJS |
3112 | if (strv_isempty(argv)) |
3113 | return -EINVAL; /* At least argv[0] must be always present. */ | |
e266c068 MS |
3114 | |
3115 | /* Let's check whether exec command on given offset matches data that we just deserialized */ | |
3116 | for (command = s->exec_command[id], i = 0; command; command = command->command_next, i++) { | |
3117 | if (i != idx) | |
3118 | continue; | |
3119 | ||
3120 | found = strv_equal(argv, command->argv) && streq(command->path, path); | |
3121 | break; | |
3122 | } | |
3123 | ||
3124 | if (!found) { | |
3125 | /* Command at the index we serialized is different, let's look for command that exactly | |
3126 | * matches but is on different index. If there is no such command we will not resume execution. */ | |
3127 | for (command = s->exec_command[id]; command; command = command->command_next) | |
3128 | if (strv_equal(command->argv, argv) && streq(command->path, path)) | |
3129 | break; | |
3130 | } | |
3131 | ||
e9da62b1 | 3132 | if (command && control) { |
e266c068 | 3133 | s->control_command = command; |
e9da62b1 LP |
3134 | s->control_command_id = id; |
3135 | } else if (command) | |
e266c068 | 3136 | s->main_command = command; |
a99bd455 ZJS |
3137 | else if (last) |
3138 | log_unit_debug(u, "Current command vanished from the unit file."); | |
e266c068 MS |
3139 | else |
3140 | log_unit_warning(u, "Current command vanished from the unit file, execution of the command list won't be resumed."); | |
3141 | ||
3142 | return 0; | |
3143 | } | |
3144 | ||
a16e1123 | 3145 | static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { |
e9fa1bf7 | 3146 | Service *s = ASSERT_PTR(SERVICE(u)); |
2339fc93 | 3147 | int r; |
a16e1123 | 3148 | |
a16e1123 LP |
3149 | assert(key); |
3150 | assert(value); | |
3151 | assert(fds); | |
3152 | ||
3153 | if (streq(key, "state")) { | |
3154 | ServiceState state; | |
3155 | ||
117dcc57 ZJS |
3156 | state = service_state_from_string(value); |
3157 | if (state < 0) | |
f2341e0a | 3158 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
3159 | else |
3160 | s->deserialized_state = state; | |
f42806df LP |
3161 | } else if (streq(key, "result")) { |
3162 | ServiceResult f; | |
3163 | ||
3164 | f = service_result_from_string(value); | |
3165 | if (f < 0) | |
f2341e0a | 3166 | log_unit_debug(u, "Failed to parse result value: %s", value); |
f42806df LP |
3167 | else if (f != SERVICE_SUCCESS) |
3168 | s->result = f; | |
3169 | ||
3170 | } else if (streq(key, "reload-result")) { | |
3171 | ServiceResult f; | |
3172 | ||
3173 | f = service_result_from_string(value); | |
3174 | if (f < 0) | |
f2341e0a | 3175 | log_unit_debug(u, "Failed to parse reload result value: %s", value); |
f42806df LP |
3176 | else if (f != SERVICE_SUCCESS) |
3177 | s->reload_result = f; | |
a16e1123 | 3178 | |
a16e1123 | 3179 | } else if (streq(key, "control-pid")) { |
2a7451dc | 3180 | |
aaa872a7 DDM |
3181 | if (!pidref_is_set(&s->control_pid)) |
3182 | (void) deserialize_pidref(fds, value, &s->control_pid); | |
2a7451dc | 3183 | |
a16e1123 | 3184 | } else if (streq(key, "main-pid")) { |
c603f523 | 3185 | PidRef pidref; |
2a7451dc | 3186 | |
70727771 | 3187 | if (!pidref_is_set(&s->main_pid) && deserialize_pidref(fds, value, &pidref) >= 0) |
7e0e6b50 | 3188 | (void) service_set_main_pidref(s, pidref, /* start_timestamp = */ NULL); |
a16e1123 | 3189 | |
a16e1123 LP |
3190 | } else if (streq(key, "main-pid-known")) { |
3191 | int b; | |
3192 | ||
117dcc57 ZJS |
3193 | b = parse_boolean(value); |
3194 | if (b < 0) | |
f2341e0a | 3195 | log_unit_debug(u, "Failed to parse main-pid-known value: %s", value); |
a16e1123 LP |
3196 | else |
3197 | s->main_pid_known = b; | |
de1d4f9b WF |
3198 | } else if (streq(key, "bus-name-good")) { |
3199 | int b; | |
3200 | ||
3201 | b = parse_boolean(value); | |
3202 | if (b < 0) | |
3203 | log_unit_debug(u, "Failed to parse bus-name-good value: %s", value); | |
3204 | else | |
3205 | s->bus_name_good = b; | |
d8ccf5fd DM |
3206 | } else if (streq(key, "bus-name-owner")) { |
3207 | r = free_and_strdup(&s->bus_name_owner, value); | |
3208 | if (r < 0) | |
3209 | log_unit_error_errno(u, r, "Unable to deserialize current bus owner %s: %m", value); | |
3a2776bc LP |
3210 | } else if (streq(key, "status-text")) { |
3211 | char *t; | |
e437538f | 3212 | ssize_t l; |
3a2776bc | 3213 | |
e437538f ZJS |
3214 | l = cunescape(value, 0, &t); |
3215 | if (l < 0) | |
3216 | log_unit_debug_errno(u, l, "Failed to unescape status text '%s': %m", value); | |
efa3f34e LP |
3217 | else |
3218 | free_and_replace(s->status_text, t); | |
3a2776bc | 3219 | |
9dfb64f8 ZJS |
3220 | } else if (streq(key, "accept-socket")) { |
3221 | Unit *socket; | |
3222 | ||
45b10174 FS |
3223 | if (u->type != UNIT_SOCKET) { |
3224 | log_unit_debug(u, "Failed to deserialize accept-socket: unit is not a socket"); | |
3225 | return 0; | |
3226 | } | |
3227 | ||
9dfb64f8 ZJS |
3228 | r = manager_load_unit(u->manager, value, NULL, NULL, &socket); |
3229 | if (r < 0) | |
5e1ee764 | 3230 | log_unit_debug_errno(u, r, "Failed to load accept-socket unit '%s': %m", value); |
9dfb64f8 | 3231 | else { |
7f7d01ed | 3232 | unit_ref_set(&s->accept_socket, u, socket); |
9dfb64f8 ZJS |
3233 | SOCKET(socket)->n_connections++; |
3234 | } | |
3235 | ||
a16e1123 | 3236 | } else if (streq(key, "socket-fd")) { |
dff9808a LP |
3237 | asynchronous_close(s->socket_fd); |
3238 | s->socket_fd = deserialize_fd(fds, value); | |
a16e1123 | 3239 | |
2339fc93 | 3240 | } else if (streq(key, "fd-store-fd")) { |
30520492 | 3241 | _cleanup_free_ char *fdv = NULL, *fdn = NULL, *fdp = NULL; |
dff9808a LP |
3242 | _cleanup_close_ int fd = -EBADF; |
3243 | int do_poll; | |
2339fc93 | 3244 | |
9b85bf02 MY |
3245 | r = extract_many_words(&value, " ", EXTRACT_CUNESCAPE|EXTRACT_UNQUOTE, &fdv, &fdn, &fdp); |
3246 | if (r < 2 || r > 3) { | |
3247 | log_unit_debug(u, "Failed to deserialize fd-store-fd, ignoring: %s", value); | |
30520492 KL |
3248 | return 0; |
3249 | } | |
8dd4c05b | 3250 | |
dff9808a LP |
3251 | fd = deserialize_fd(fds, fdv); |
3252 | if (fd < 0) | |
3253 | return 0; | |
3254 | ||
9b85bf02 MY |
3255 | do_poll = r == 3 ? parse_boolean(fdp) : true; |
3256 | if (do_poll < 0) { | |
3257 | log_unit_debug_errno(u, do_poll, | |
3258 | "Failed to deserialize fd-store-fd do_poll, ignoring: %s", fdp); | |
30520492 | 3259 | return 0; |
2339fc93 LP |
3260 | } |
3261 | ||
30520492 | 3262 | r = service_add_fd_store(s, fd, fdn, do_poll); |
a02287ea | 3263 | if (r < 0) { |
9b85bf02 MY |
3264 | log_unit_debug_errno(u, r, |
3265 | "Failed to store deserialized fd '%s', ignoring: %m", fdn); | |
a02287ea YW |
3266 | return 0; |
3267 | } | |
dff9808a LP |
3268 | |
3269 | TAKE_FD(fd); | |
ecdbca40 LP |
3270 | } else if (streq(key, "main-exec-status-pid")) { |
3271 | pid_t pid; | |
3272 | ||
e364ad06 | 3273 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 3274 | log_unit_debug(u, "Failed to parse main-exec-status-pid value: %s", value); |
ecdbca40 LP |
3275 | else |
3276 | s->main_exec_status.pid = pid; | |
3277 | } else if (streq(key, "main-exec-status-code")) { | |
3278 | int i; | |
3279 | ||
e364ad06 | 3280 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 3281 | log_unit_debug(u, "Failed to parse main-exec-status-code value: %s", value); |
ecdbca40 LP |
3282 | else |
3283 | s->main_exec_status.code = i; | |
3284 | } else if (streq(key, "main-exec-status-status")) { | |
3285 | int i; | |
3286 | ||
e364ad06 | 3287 | if (safe_atoi(value, &i) < 0) |
f2341e0a | 3288 | log_unit_debug(u, "Failed to parse main-exec-status-status value: %s", value); |
ecdbca40 LP |
3289 | else |
3290 | s->main_exec_status.status = i; | |
799fd0fd | 3291 | } else if (streq(key, "main-exec-status-start")) |
d68c645b | 3292 | deserialize_dual_timestamp(value, &s->main_exec_status.start_timestamp); |
799fd0fd | 3293 | else if (streq(key, "main-exec-status-exit")) |
d68c645b | 3294 | deserialize_dual_timestamp(value, &s->main_exec_status.exit_timestamp); |
3c1d1ca1 LP |
3295 | else if (streq(key, "main-exec-status-handoff")) |
3296 | deserialize_dual_timestamp(value, &s->main_exec_status.handoff_timestamp); | |
19dff691 MY |
3297 | else if (streq(key, "notify-access-override")) { |
3298 | NotifyAccess notify_access; | |
3299 | ||
3300 | notify_access = notify_access_from_string(value); | |
3301 | if (notify_access < 0) | |
3302 | log_unit_debug(u, "Failed to parse notify-access-override value: %s", value); | |
3303 | else | |
3304 | s->notify_access_override = notify_access; | |
3305 | } else if (streq(key, "watchdog-timestamp")) | |
d68c645b | 3306 | deserialize_dual_timestamp(value, &s->watchdog_timestamp); |
613b411c | 3307 | else if (streq(key, "forbid-restart")) { |
6aca9a58 SE |
3308 | int b; |
3309 | ||
3310 | b = parse_boolean(value); | |
3311 | if (b < 0) | |
f2341e0a | 3312 | log_unit_debug(u, "Failed to parse forbid-restart value: %s", value); |
6aca9a58 SE |
3313 | else |
3314 | s->forbid_restart = b; | |
a34ceba6 | 3315 | } else if (streq(key, "stdin-fd")) { |
a34ceba6 | 3316 | |
dff9808a LP |
3317 | asynchronous_close(s->stdin_fd); |
3318 | s->stdin_fd = deserialize_fd(fds, value); | |
3319 | if (s->stdin_fd >= 0) | |
1e22b5cd | 3320 | s->exec_context.stdio_as_fds = true; |
dff9808a | 3321 | |
a34ceba6 | 3322 | } else if (streq(key, "stdout-fd")) { |
a34ceba6 | 3323 | |
dff9808a LP |
3324 | asynchronous_close(s->stdout_fd); |
3325 | s->stdout_fd = deserialize_fd(fds, value); | |
3326 | if (s->stdout_fd >= 0) | |
1e22b5cd | 3327 | s->exec_context.stdio_as_fds = true; |
dff9808a | 3328 | |
a34ceba6 | 3329 | } else if (streq(key, "stderr-fd")) { |
a34ceba6 | 3330 | |
dff9808a LP |
3331 | asynchronous_close(s->stderr_fd); |
3332 | s->stderr_fd = deserialize_fd(fds, value); | |
3333 | if (s->stderr_fd >= 0) | |
1e22b5cd | 3334 | s->exec_context.stdio_as_fds = true; |
dff9808a | 3335 | |
5686391b | 3336 | } else if (streq(key, "exec-fd")) { |
dff9808a | 3337 | _cleanup_close_ int fd = -EBADF; |
5686391b | 3338 | |
dff9808a LP |
3339 | fd = deserialize_fd(fds, value); |
3340 | if (fd >= 0) { | |
5dcadb4c | 3341 | s->exec_fd_event_source = sd_event_source_disable_unref(s->exec_fd_event_source); |
5686391b | 3342 | |
dff9808a LP |
3343 | if (service_allocate_exec_fd_event_source(s, fd, &s->exec_fd_event_source) >= 0) |
3344 | TAKE_FD(fd); | |
5686391b | 3345 | } |
dff9808a | 3346 | |
2787d83c | 3347 | } else if (streq(key, "watchdog-override-usec")) { |
d68c645b | 3348 | if (deserialize_usec(value, &s->watchdog_override_usec) < 0) |
2787d83c | 3349 | log_unit_debug(u, "Failed to parse watchdog_override_usec value: %s", value); |
d68c645b | 3350 | else |
2787d83c | 3351 | s->watchdog_override_enable = true; |
d68c645b | 3352 | |
aa8c4bbf LP |
3353 | } else if (streq(key, "watchdog-original-usec")) { |
3354 | if (deserialize_usec(value, &s->watchdog_original_usec) < 0) | |
3355 | log_unit_debug(u, "Failed to parse watchdog_original_usec value: %s", value); | |
3356 | ||
e266c068 MS |
3357 | } else if (STR_IN_SET(key, "main-command", "control-command")) { |
3358 | r = service_deserialize_exec_command(u, key, value); | |
3359 | if (r < 0) | |
3360 | log_unit_debug_errno(u, r, "Failed to parse serialized command \"%s\": %m", value); | |
7a0019d3 LP |
3361 | |
3362 | } else if (streq(key, "n-restarts")) { | |
3363 | r = safe_atou(value, &s->n_restarts); | |
3364 | if (r < 0) | |
3365 | log_unit_debug_errno(u, r, "Failed to parse serialized restart counter '%s': %m", value); | |
3366 | ||
3367 | } else if (streq(key, "flush-n-restarts")) { | |
3368 | r = parse_boolean(value); | |
3369 | if (r < 0) | |
3370 | log_unit_debug_errno(u, r, "Failed to parse serialized flush restart counter setting '%s': %m", value); | |
3371 | else | |
3372 | s->flush_n_restarts = r; | |
3bd28bf7 LP |
3373 | } else if (streq(key, "reload-begin-usec")) { |
3374 | r = deserialize_usec(value, &s->reload_begin_usec); | |
3375 | if (r < 0) | |
3376 | log_unit_debug_errno(u, r, "Failed to parse serialized reload begin timestamp '%s', ignoring: %m", value); | |
c17ec25e | 3377 | } else |
f2341e0a | 3378 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
3379 | |
3380 | return 0; | |
3381 | } | |
3382 | ||
d1e8e8b5 | 3383 | static UnitActiveState service_active_state(Unit *u) { |
e9fa1bf7 | 3384 | Service *s = ASSERT_PTR(SERVICE(u)); |
e056b01d LP |
3385 | const UnitActiveState *table; |
3386 | ||
e9fa1bf7 | 3387 | table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; |
e056b01d | 3388 | |
e9fa1bf7 | 3389 | return table[s->state]; |
034c6ed7 LP |
3390 | } |
3391 | ||
10a94420 LP |
3392 | static const char *service_sub_state_to_string(Unit *u) { |
3393 | assert(u); | |
3394 | ||
3395 | return service_state_to_string(SERVICE(u)->state); | |
3396 | } | |
3397 | ||
f2f725e5 | 3398 | static bool service_may_gc(Unit *u) { |
e9fa1bf7 | 3399 | Service *s = ASSERT_PTR(SERVICE(u)); |
701cc384 | 3400 | |
e98b2fbb | 3401 | /* Never clean up services that still have a process around, even if the service is formally dead. Note that |
f2f725e5 | 3402 | * unit_may_gc() already checked our cgroup for us, we just check our two additional PIDs, too, in case they |
e98b2fbb LP |
3403 | * have moved outside of the cgroup. */ |
3404 | ||
3405 | if (main_pid_good(s) > 0 || | |
6d55002a | 3406 | control_pid_good(s) > 0) |
f2f725e5 | 3407 | return false; |
6d55002a | 3408 | |
a1d31573 LP |
3409 | /* Only allow collection of actually dead services, i.e. not those that are in the transitionary |
3410 | * SERVICE_DEAD_BEFORE_AUTO_RESTART/SERVICE_FAILED_BEFORE_AUTO_RESTART states. */ | |
b9c1883a | 3411 | if (!IN_SET(s->state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_DEAD_RESOURCES_PINNED)) |
a1d31573 LP |
3412 | return false; |
3413 | ||
f2f725e5 | 3414 | return true; |
6d55002a LP |
3415 | } |
3416 | ||
3a111838 MS |
3417 | static int service_retry_pid_file(Service *s) { |
3418 | int r; | |
3419 | ||
e9fa1bf7 | 3420 | assert(s); |
3a111838 | 3421 | assert(s->pid_file); |
3742095b | 3422 | assert(IN_SET(s->state, SERVICE_START, SERVICE_START_POST)); |
3a111838 MS |
3423 | |
3424 | r = service_load_pid_file(s, false); | |
3425 | if (r < 0) | |
3426 | return r; | |
3427 | ||
3428 | service_unwatch_pid_file(s); | |
3429 | ||
f42806df | 3430 | service_enter_running(s, SERVICE_SUCCESS); |
3a111838 MS |
3431 | return 0; |
3432 | } | |
3433 | ||
3434 | static int service_watch_pid_file(Service *s) { | |
3435 | int r; | |
3436 | ||
e9fa1bf7 MY |
3437 | assert(s); |
3438 | ||
f2341e0a | 3439 | log_unit_debug(UNIT(s), "Setting watch for PID file %s", s->pid_file_pathspec->path); |
8bb2d17d | 3440 | |
5686391b | 3441 | r = path_spec_watch(s->pid_file_pathspec, service_dispatch_inotify_io); |
10691b9e LP |
3442 | if (r < 0) { |
3443 | log_unit_error_errno(UNIT(s), r, "Failed to set a watch for PID file %s: %m", s->pid_file_pathspec->path); | |
3444 | service_unwatch_pid_file(s); | |
3445 | return r; | |
3446 | } | |
3a111838 MS |
3447 | |
3448 | /* the pidfile might have appeared just before we set the watch */ | |
f2341e0a | 3449 | log_unit_debug(UNIT(s), "Trying to read PID file %s in case it changed", s->pid_file_pathspec->path); |
3a111838 MS |
3450 | service_retry_pid_file(s); |
3451 | ||
3452 | return 0; | |
3a111838 MS |
3453 | } |
3454 | ||
3455 | static int service_demand_pid_file(Service *s) { | |
51339a9a | 3456 | _cleanup_free_ PathSpec *ps = NULL; |
3a111838 | 3457 | |
e9fa1bf7 | 3458 | assert(s); |
3a111838 MS |
3459 | assert(s->pid_file); |
3460 | assert(!s->pid_file_pathspec); | |
3461 | ||
51339a9a | 3462 | ps = new(PathSpec, 1); |
3a111838 MS |
3463 | if (!ps) |
3464 | return -ENOMEM; | |
3465 | ||
51339a9a LP |
3466 | *ps = (PathSpec) { |
3467 | .unit = UNIT(s), | |
3468 | .path = strdup(s->pid_file), | |
3469 | /* PATH_CHANGED would not be enough. There are daemons (sendmail) that keep their PID file | |
3470 | * open all the time. */ | |
3471 | .type = PATH_MODIFIED, | |
3472 | .inotify_fd = -EBADF, | |
3473 | }; | |
3474 | ||
3475 | if (!ps->path) | |
3a111838 | 3476 | return -ENOMEM; |
3a111838 | 3477 | |
4ff361cc | 3478 | path_simplify(ps->path); |
3a111838 | 3479 | |
51339a9a | 3480 | s->pid_file_pathspec = TAKE_PTR(ps); |
3a111838 MS |
3481 | |
3482 | return service_watch_pid_file(s); | |
3483 | } | |
3484 | ||
5686391b | 3485 | static int service_dispatch_inotify_io(sd_event_source *source, int fd, uint32_t events, void *userdata) { |
99534007 | 3486 | PathSpec *p = ASSERT_PTR(userdata); |
e9fa1bf7 | 3487 | Service *s = ASSERT_PTR(SERVICE(p->unit)); |
3a111838 | 3488 | |
3a111838 | 3489 | assert(fd >= 0); |
3742095b | 3490 | assert(IN_SET(s->state, SERVICE_START, SERVICE_START_POST)); |
3a111838 | 3491 | assert(s->pid_file_pathspec); |
57020a3a | 3492 | assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd)); |
3a111838 | 3493 | |
f2341e0a | 3494 | log_unit_debug(UNIT(s), "inotify event"); |
3a111838 | 3495 | |
e14c2802 | 3496 | if (path_spec_fd_event(p, events) < 0) |
3a111838 MS |
3497 | goto fail; |
3498 | ||
3499 | if (service_retry_pid_file(s) == 0) | |
718db961 | 3500 | return 0; |
3a111838 MS |
3501 | |
3502 | if (service_watch_pid_file(s) < 0) | |
3503 | goto fail; | |
3504 | ||
718db961 LP |
3505 | return 0; |
3506 | ||
3a111838 MS |
3507 | fail: |
3508 | service_unwatch_pid_file(s); | |
f42806df | 3509 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); |
718db961 | 3510 | return 0; |
3a111838 MS |
3511 | } |
3512 | ||
5686391b | 3513 | static int service_dispatch_exec_io(sd_event_source *source, int fd, uint32_t events, void *userdata) { |
e9fa1bf7 | 3514 | Service *s = ASSERT_PTR(SERVICE(userdata)); |
5686391b LP |
3515 | |
3516 | log_unit_debug(UNIT(s), "got exec-fd event"); | |
3517 | ||
3518 | /* If Type=exec is set, we'll consider a service started successfully the instant we invoked execve() | |
12001b1b LP |
3519 | * successfully for it. We implement this through a pipe() towards the child, which the kernel |
3520 | * automatically closes for us due to O_CLOEXEC on execve() in the child, which then triggers EOF on | |
3521 | * the pipe in the parent. We need to be careful however, as there are other reasons that we might | |
3522 | * cause the child's side of the pipe to be closed (for example, a simple exit()). To deal with that | |
3523 | * we'll ignore EOFs on the pipe unless the child signalled us first that it is about to call the | |
3524 | * execve(). It does so by sending us a simple non-zero byte via the pipe. We also provide the child | |
3525 | * with a way to inform us in case execve() failed: if it sends a zero byte we'll ignore POLLHUP on | |
3526 | * the fd again. */ | |
5686391b LP |
3527 | |
3528 | for (;;) { | |
12001b1b | 3529 | uint8_t x; |
5686391b LP |
3530 | ssize_t n; |
3531 | ||
12001b1b LP |
3532 | n = read(fd, &x, sizeof(x)); |
3533 | if (n < 0) { | |
3534 | if (errno == EAGAIN) /* O_NONBLOCK in effect → everything queued has now been processed. */ | |
3535 | return 0; | |
3536 | ||
3537 | return log_unit_error_errno(UNIT(s), errno, "Failed to read from exec_fd: %m"); | |
3538 | } | |
3539 | if (n == 0) { /* EOF → the event we are waiting for in case of Type=exec */ | |
5dcadb4c | 3540 | s->exec_fd_event_source = sd_event_source_disable_unref(s->exec_fd_event_source); |
5686391b LP |
3541 | |
3542 | if (s->exec_fd_hot) { /* Did the child tell us to expect EOF now? */ | |
3543 | log_unit_debug(UNIT(s), "Got EOF on exec-fd"); | |
3544 | ||
3545 | s->exec_fd_hot = false; | |
3546 | ||
3547 | /* Nice! This is what we have been waiting for. Transition to next state. */ | |
3548 | if (s->type == SERVICE_EXEC && s->state == SERVICE_START) | |
3549 | service_enter_start_post(s); | |
3550 | } else | |
3551 | log_unit_debug(UNIT(s), "Got EOF on exec-fd while it was disabled, ignoring."); | |
3552 | ||
3553 | return 0; | |
3554 | } | |
5686391b | 3555 | |
12001b1b LP |
3556 | /* A byte was read → this turns on/off the exec fd logic */ |
3557 | assert(n == sizeof(x)); | |
93cb78ae | 3558 | |
12001b1b | 3559 | s->exec_fd_hot = x; |
93cb78ae | 3560 | } |
5686391b LP |
3561 | } |
3562 | ||
a911bb9a | 3563 | static void service_notify_cgroup_empty_event(Unit *u) { |
e9fa1bf7 | 3564 | Service *s = ASSERT_PTR(SERVICE(u)); |
a911bb9a | 3565 | |
a5b5aece | 3566 | log_unit_debug(u, "Control group is empty."); |
a911bb9a LP |
3567 | |
3568 | switch (s->state) { | |
3569 | ||
a1d31573 LP |
3570 | /* Waiting for SIGCHLD is usually more interesting, because it includes return |
3571 | * codes/signals. Which is why we ignore the cgroup events for most cases, except when we | |
3572 | * don't know pid which to expect the SIGCHLD for. */ | |
a911bb9a LP |
3573 | |
3574 | case SERVICE_START: | |
3bd28bf7 | 3575 | if (IN_SET(s->type, SERVICE_NOTIFY, SERVICE_NOTIFY_RELOAD) && |
3c751b1b LP |
3576 | main_pid_good(s) == 0 && |
3577 | control_pid_good(s) == 0) { | |
3d474ef7 | 3578 | /* No chance of getting a ready notification anymore */ |
c3fda31d | 3579 | service_enter_stop_post(s, SERVICE_FAILURE_PROTOCOL); |
71e529fc JW |
3580 | break; |
3581 | } | |
3582 | ||
f52e9ed6 MY |
3583 | if (s->exit_type == SERVICE_EXIT_CGROUP && main_pid_good(s) <= 0) { |
3584 | service_enter_stop_post(s, SERVICE_SUCCESS); | |
3585 | break; | |
3586 | } | |
596e4470 | 3587 | |
4831981d | 3588 | _fallthrough_; |
71e529fc | 3589 | case SERVICE_START_POST: |
3c751b1b LP |
3590 | if (s->pid_file_pathspec && |
3591 | main_pid_good(s) == 0 && | |
3592 | control_pid_good(s) == 0) { | |
3593 | ||
3d474ef7 | 3594 | /* Give up hoping for the daemon to write its PID file */ |
f2341e0a | 3595 | log_unit_warning(u, "Daemon never wrote its PID file. Failing."); |
8bb2d17d | 3596 | |
a911bb9a LP |
3597 | service_unwatch_pid_file(s); |
3598 | if (s->state == SERVICE_START) | |
c3fda31d | 3599 | service_enter_stop_post(s, SERVICE_FAILURE_PROTOCOL); |
a911bb9a | 3600 | else |
c35755fb | 3601 | service_enter_stop(s, SERVICE_FAILURE_PROTOCOL); |
a911bb9a LP |
3602 | } |
3603 | break; | |
3604 | ||
3605 | case SERVICE_RUNNING: | |
3606 | /* service_enter_running() will figure out what to do */ | |
3607 | service_enter_running(s, SERVICE_SUCCESS); | |
3608 | break; | |
3609 | ||
c87700a1 | 3610 | case SERVICE_STOP_WATCHDOG: |
a911bb9a LP |
3611 | case SERVICE_STOP_SIGTERM: |
3612 | case SERVICE_STOP_SIGKILL: | |
3613 | ||
b13ddbbc | 3614 | if (main_pid_good(s) <= 0 && control_pid_good(s) <= 0) |
a911bb9a LP |
3615 | service_enter_stop_post(s, SERVICE_SUCCESS); |
3616 | ||
3617 | break; | |
3618 | ||
3619 | case SERVICE_STOP_POST: | |
bf760801 | 3620 | case SERVICE_FINAL_WATCHDOG: |
a911bb9a LP |
3621 | case SERVICE_FINAL_SIGTERM: |
3622 | case SERVICE_FINAL_SIGKILL: | |
b13ddbbc | 3623 | if (main_pid_good(s) <= 0 && control_pid_good(s) <= 0) |
a911bb9a LP |
3624 | service_enter_dead(s, SERVICE_SUCCESS, true); |
3625 | ||
3626 | break; | |
3627 | ||
e08dabfe AZ |
3628 | /* If the cgroup empty notification comes when the unit is not active, we must have failed to clean |
3629 | * up the cgroup earlier and should do it now. */ | |
a1d31573 | 3630 | case SERVICE_AUTO_RESTART: |
09d04ad3 | 3631 | case SERVICE_AUTO_RESTART_QUEUED: |
e08dabfe AZ |
3632 | unit_prune_cgroup(u); |
3633 | break; | |
3634 | ||
a911bb9a LP |
3635 | default: |
3636 | ; | |
3637 | } | |
3638 | } | |
3639 | ||
38c41427 | 3640 | static void service_notify_cgroup_oom_event(Unit *u, bool managed_oom) { |
e9fa1bf7 | 3641 | Service *s = ASSERT_PTR(SERVICE(u)); |
afcfaa69 | 3642 | |
38c41427 NK |
3643 | if (managed_oom) |
3644 | log_unit_debug(u, "Process(es) of control group were killed by systemd-oomd."); | |
3645 | else | |
3646 | log_unit_debug(u, "Process of control group was killed by the OOM killer."); | |
afcfaa69 LP |
3647 | |
3648 | if (s->oom_policy == OOM_CONTINUE) | |
3649 | return; | |
3650 | ||
3651 | switch (s->state) { | |
3652 | ||
31cd5f63 | 3653 | case SERVICE_CONDITION: |
afcfaa69 LP |
3654 | case SERVICE_START_PRE: |
3655 | case SERVICE_START: | |
3656 | case SERVICE_START_POST: | |
3657 | case SERVICE_STOP: | |
3658 | if (s->oom_policy == OOM_STOP) | |
3659 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_OOM_KILL); | |
3660 | else if (s->oom_policy == OOM_KILL) | |
3661 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_OOM_KILL); | |
3662 | ||
3663 | break; | |
3664 | ||
3665 | case SERVICE_EXITED: | |
3666 | case SERVICE_RUNNING: | |
3667 | if (s->oom_policy == OOM_STOP) | |
3668 | service_enter_stop(s, SERVICE_FAILURE_OOM_KILL); | |
3669 | else if (s->oom_policy == OOM_KILL) | |
3670 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_OOM_KILL); | |
3671 | ||
3672 | break; | |
3673 | ||
3674 | case SERVICE_STOP_WATCHDOG: | |
3675 | case SERVICE_STOP_SIGTERM: | |
3676 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_OOM_KILL); | |
3677 | break; | |
3678 | ||
3679 | case SERVICE_STOP_SIGKILL: | |
3680 | case SERVICE_FINAL_SIGKILL: | |
3681 | if (s->result == SERVICE_SUCCESS) | |
3682 | s->result = SERVICE_FAILURE_OOM_KILL; | |
3683 | break; | |
3684 | ||
3685 | case SERVICE_STOP_POST: | |
3686 | case SERVICE_FINAL_SIGTERM: | |
3687 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_OOM_KILL); | |
3688 | break; | |
3689 | ||
3690 | default: | |
3691 | ; | |
3692 | } | |
3693 | } | |
3694 | ||
87f0e418 | 3695 | static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
e9fa1bf7 | 3696 | Service *s = ASSERT_PTR(SERVICE(u)); |
5cdabc8d | 3697 | bool notify_dbus = true; |
f42806df | 3698 | ServiceResult f; |
e5123725 | 3699 | ExitClean clean_mode; |
c917a807 | 3700 | int r; |
5cb5a6ff | 3701 | |
034c6ed7 LP |
3702 | assert(pid >= 0); |
3703 | ||
e5123725 AZ |
3704 | /* Oneshot services and non-SERVICE_EXEC_START commands should not be |
3705 | * considered daemons as they are typically not long running. */ | |
c79ab77c | 3706 | if (s->type == SERVICE_ONESHOT || (s->control_pid.pid == pid && s->control_command_id != SERVICE_EXEC_START)) |
e5123725 AZ |
3707 | clean_mode = EXIT_CLEAN_COMMAND; |
3708 | else | |
3709 | clean_mode = EXIT_CLEAN_DAEMON; | |
3710 | ||
3711 | if (is_clean_exit(code, status, clean_mode, &s->success_status)) | |
f42806df LP |
3712 | f = SERVICE_SUCCESS; |
3713 | else if (code == CLD_EXITED) | |
3714 | f = SERVICE_FAILURE_EXIT_CODE; | |
3715 | else if (code == CLD_KILLED) | |
3716 | f = SERVICE_FAILURE_SIGNAL; | |
3717 | else if (code == CLD_DUMPED) | |
3718 | f = SERVICE_FAILURE_CORE_DUMP; | |
d06dacd0 | 3719 | else |
04499a70 | 3720 | assert_not_reached(); |
034c6ed7 | 3721 | |
c79ab77c | 3722 | if (s->main_pid.pid == pid) { |
13bb1ffb ZJS |
3723 | /* Clean up the exec_fd event source. We want to do this here, not later in |
3724 | * service_set_state(), because service_enter_stop_post() calls service_spawn(). | |
3725 | * The source owns its end of the pipe, so this will close that too. */ | |
3726 | s->exec_fd_event_source = sd_event_source_disable_unref(s->exec_fd_event_source); | |
3727 | ||
db01f8b3 MS |
3728 | /* Forking services may occasionally move to a new PID. |
3729 | * As long as they update the PID file before exiting the old | |
3730 | * PID, they're fine. */ | |
db256aab | 3731 | if (service_load_pid_file(s, false) > 0) |
db01f8b3 | 3732 | return; |
034c6ed7 | 3733 | |
c79ab77c | 3734 | pidref_done(&s->main_pid); |
6ea832a2 | 3735 | exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status); |
034c6ed7 | 3736 | |
867b3b7d | 3737 | if (s->main_command) { |
fbeefb45 LP |
3738 | /* If this is not a forking service than the |
3739 | * main process got started and hence we copy | |
3740 | * the exit status so that it is recorded both | |
3741 | * as main and as control process exit | |
3742 | * status */ | |
3743 | ||
867b3b7d | 3744 | s->main_command->exec_status = s->main_exec_status; |
b708e7ce | 3745 | |
3ed0cd26 | 3746 | if (s->main_command->flags & EXEC_COMMAND_IGNORE_FAILURE) |
f42806df | 3747 | f = SERVICE_SUCCESS; |
fbeefb45 LP |
3748 | } else if (s->exec_command[SERVICE_EXEC_START]) { |
3749 | ||
3750 | /* If this is a forked process, then we should | |
3751 | * ignore the return value if this was | |
3752 | * configured for the starter process */ | |
3753 | ||
3ed0cd26 | 3754 | if (s->exec_command[SERVICE_EXEC_START]->flags & EXEC_COMMAND_IGNORE_FAILURE) |
fbeefb45 | 3755 | f = SERVICE_SUCCESS; |
034c6ed7 LP |
3756 | } |
3757 | ||
91bbd9b7 | 3758 | unit_log_process_exit( |
5cc2cd1c | 3759 | u, |
abaf5edd | 3760 | "Main process", |
91bbd9b7 | 3761 | service_exec_command_to_string(SERVICE_EXEC_START), |
5cc2cd1c | 3762 | f == SERVICE_SUCCESS, |
91bbd9b7 | 3763 | code, status); |
f42806df | 3764 | |
a0fef983 | 3765 | if (s->result == SERVICE_SUCCESS) |
f42806df | 3766 | s->result = f; |
034c6ed7 | 3767 | |
867b3b7d LP |
3768 | if (s->main_command && |
3769 | s->main_command->command_next && | |
b58aeb70 | 3770 | s->type == SERVICE_ONESHOT && |
f42806df | 3771 | f == SERVICE_SUCCESS) { |
034c6ed7 | 3772 | |
e78695d4 | 3773 | /* There is another command to execute, so let's do that. */ |
034c6ed7 | 3774 | |
f2341e0a | 3775 | log_unit_debug(u, "Running next main command for state %s.", service_state_to_string(s->state)); |
f42806df | 3776 | service_run_next_main(s); |
034c6ed7 | 3777 | |
34e9ba66 | 3778 | } else { |
867b3b7d | 3779 | s->main_command = NULL; |
34e9ba66 | 3780 | |
3bd28bf7 LP |
3781 | /* Services with ExitType=cgroup do not act on main PID exiting, unless the cgroup is |
3782 | * already empty */ | |
596e4470 HC |
3783 | if (s->exit_type == SERVICE_EXIT_MAIN || cgroup_good(s) <= 0) { |
3784 | /* The service exited, so the service is officially gone. */ | |
3785 | switch (s->state) { | |
3786 | ||
3787 | case SERVICE_START_POST: | |
3788 | case SERVICE_RELOAD: | |
3bd28bf7 LP |
3789 | case SERVICE_RELOAD_SIGNAL: |
3790 | case SERVICE_RELOAD_NOTIFY: | |
3791 | /* If neither main nor control processes are running then the current | |
3792 | * state can never exit cleanly, hence immediately terminate the | |
3793 | * service. */ | |
596e4470 HC |
3794 | if (control_pid_good(s) <= 0) |
3795 | service_enter_stop(s, f); | |
3796 | ||
3797 | /* Otherwise need to wait until the operation is done. */ | |
3798 | break; | |
bbe19f68 | 3799 | |
596e4470 HC |
3800 | case SERVICE_STOP: |
3801 | /* Need to wait until the operation is done. */ | |
3802 | break; | |
bbe19f68 | 3803 | |
596e4470 HC |
3804 | case SERVICE_START: |
3805 | if (s->type == SERVICE_ONESHOT) { | |
3806 | /* This was our main goal, so let's go on */ | |
3807 | if (f == SERVICE_SUCCESS) | |
3808 | service_enter_start_post(s); | |
3809 | else | |
3810 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); | |
3811 | break; | |
3bd28bf7 | 3812 | } else if (IN_SET(s->type, SERVICE_NOTIFY, SERVICE_NOTIFY_RELOAD)) { |
596e4470 HC |
3813 | /* Only enter running through a notification, so that the |
3814 | * SERVICE_START state signifies that no ready notification | |
3815 | * has been received */ | |
3816 | if (f != SERVICE_SUCCESS) | |
3817 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); | |
19dff691 | 3818 | else if (!s->remain_after_exit || service_get_notify_access(s) == NOTIFY_MAIN) |
596e4470 HC |
3819 | /* The service has never been and will never be active */ |
3820 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_PROTOCOL); | |
3821 | break; | |
3822 | } | |
7d55e835 | 3823 | |
596e4470 HC |
3824 | _fallthrough_; |
3825 | case SERVICE_RUNNING: | |
3826 | service_enter_running(s, f); | |
3d474ef7 | 3827 | break; |
034c6ed7 | 3828 | |
596e4470 HC |
3829 | case SERVICE_STOP_WATCHDOG: |
3830 | case SERVICE_STOP_SIGTERM: | |
3831 | case SERVICE_STOP_SIGKILL: | |
5cb5a6ff | 3832 | |
596e4470 HC |
3833 | if (control_pid_good(s) <= 0) |
3834 | service_enter_stop_post(s, f); | |
5cb5a6ff | 3835 | |
596e4470 HC |
3836 | /* If there is still a control process, wait for that first */ |
3837 | break; | |
34e9ba66 | 3838 | |
596e4470 | 3839 | case SERVICE_STOP_POST: |
c1566ef0 | 3840 | |
596e4470 HC |
3841 | if (control_pid_good(s) <= 0) |
3842 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, f); | |
c1566ef0 | 3843 | |
596e4470 | 3844 | break; |
c1566ef0 | 3845 | |
596e4470 HC |
3846 | case SERVICE_FINAL_WATCHDOG: |
3847 | case SERVICE_FINAL_SIGTERM: | |
3848 | case SERVICE_FINAL_SIGKILL: | |
bf108e55 | 3849 | |
596e4470 HC |
3850 | if (control_pid_good(s) <= 0) |
3851 | service_enter_dead(s, f, true); | |
3852 | break; | |
bf108e55 | 3853 | |
596e4470 HC |
3854 | default: |
3855 | assert_not_reached(); | |
3856 | } | |
1651ce09 MY |
3857 | } else if (s->exit_type == SERVICE_EXIT_CGROUP && s->state == SERVICE_START && |
3858 | !IN_SET(s->type, SERVICE_NOTIFY, SERVICE_NOTIFY_RELOAD, SERVICE_DBUS)) | |
ef430065 FT |
3859 | /* If a main process exits very quickly, this function might be executed |
3860 | * before service_dispatch_exec_io(). Since this function disabled IO events | |
3861 | * to monitor the main process above, we need to update the state here too. | |
1651ce09 MY |
3862 | * Let's consider the process is successfully launched and exited, but |
3863 | * only when we're not expecting a readiness notification or dbus name. */ | |
ef430065 | 3864 | service_enter_start_post(s); |
034c6ed7 | 3865 | } |
5cb5a6ff | 3866 | |
c79ab77c | 3867 | } else if (s->control_pid.pid == pid) { |
58441bc1 ZJS |
3868 | const char *kind; |
3869 | bool success; | |
3870 | ||
c79ab77c | 3871 | pidref_done(&s->control_pid); |
34e9ba66 | 3872 | |
b708e7ce | 3873 | if (s->control_command) { |
8bb2d17d | 3874 | exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status); |
a16e1123 | 3875 | |
3ed0cd26 | 3876 | if (s->control_command->flags & EXEC_COMMAND_IGNORE_FAILURE) |
f42806df | 3877 | f = SERVICE_SUCCESS; |
b708e7ce LP |
3878 | } |
3879 | ||
42e6f549 AZ |
3880 | /* ExecCondition= calls that exit with (0, 254] should invoke skip-like behavior instead of failing */ |
3881 | if (s->state == SERVICE_CONDITION) { | |
3882 | if (f == SERVICE_FAILURE_EXIT_CODE && status < 255) { | |
3883 | UNIT(s)->condition_result = false; | |
3884 | f = SERVICE_SKIP_CONDITION; | |
58441bc1 ZJS |
3885 | success = true; |
3886 | } else if (f == SERVICE_SUCCESS) { | |
42e6f549 | 3887 | UNIT(s)->condition_result = true; |
58441bc1 ZJS |
3888 | success = true; |
3889 | } else | |
3890 | success = false; | |
3891 | ||
3892 | kind = "Condition check process"; | |
3893 | } else { | |
3894 | kind = "Control process"; | |
3895 | success = f == SERVICE_SUCCESS; | |
42e6f549 AZ |
3896 | } |
3897 | ||
91bbd9b7 | 3898 | unit_log_process_exit( |
5cc2cd1c | 3899 | u, |
58441bc1 | 3900 | kind, |
91bbd9b7 | 3901 | service_exec_command_to_string(s->control_command_id), |
58441bc1 | 3902 | success, |
91bbd9b7 | 3903 | code, status); |
f42806df | 3904 | |
d611cfa7 | 3905 | if (s->state != SERVICE_RELOAD && s->result == SERVICE_SUCCESS) |
f42806df | 3906 | s->result = f; |
034c6ed7 | 3907 | |
34e9ba66 LP |
3908 | if (s->control_command && |
3909 | s->control_command->command_next && | |
f42806df | 3910 | f == SERVICE_SUCCESS) { |
034c6ed7 | 3911 | |
81006ebb | 3912 | /* There is another command to execute, so let's do that. */ |
034c6ed7 | 3913 | |
f2341e0a | 3914 | log_unit_debug(u, "Running next control command for state %s.", service_state_to_string(s->state)); |
f42806df | 3915 | service_run_next_control(s); |
034c6ed7 | 3916 | |
80876c20 | 3917 | } else { |
3bd28bf7 | 3918 | /* No further commands for this step, so let's figure out what to do next */ |
034c6ed7 | 3919 | |
a16e1123 LP |
3920 | s->control_command = NULL; |
3921 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
3922 | ||
f2341e0a | 3923 | log_unit_debug(u, "Got final SIGCHLD for state %s.", service_state_to_string(s->state)); |
bd982a8b | 3924 | |
034c6ed7 LP |
3925 | switch (s->state) { |
3926 | ||
31cd5f63 AZ |
3927 | case SERVICE_CONDITION: |
3928 | if (f == SERVICE_SUCCESS) | |
3929 | service_enter_start_pre(s); | |
3930 | else | |
3931 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); | |
3932 | break; | |
3933 | ||
034c6ed7 | 3934 | case SERVICE_START_PRE: |
f42806df | 3935 | if (f == SERVICE_SUCCESS) |
034c6ed7 LP |
3936 | service_enter_start(s); |
3937 | else | |
c3fda31d | 3938 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
034c6ed7 LP |
3939 | break; |
3940 | ||
3941 | case SERVICE_START: | |
bfba3256 LP |
3942 | if (s->type != SERVICE_FORKING) |
3943 | /* Maybe spurious event due to a reload that changed the type? */ | |
3944 | break; | |
034c6ed7 | 3945 | |
f42806df | 3946 | if (f != SERVICE_SUCCESS) { |
c3fda31d | 3947 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
3a111838 MS |
3948 | break; |
3949 | } | |
034c6ed7 | 3950 | |
3a111838 | 3951 | if (s->pid_file) { |
f42806df | 3952 | bool has_start_post; |
f42806df | 3953 | |
3a111838 MS |
3954 | /* Let's try to load the pid file here if we can. |
3955 | * The PID file might actually be created by a START_POST | |
3956 | * script. In that case don't worry if the loading fails. */ | |
f42806df | 3957 | |
5d904a6a | 3958 | has_start_post = s->exec_command[SERVICE_EXEC_START_POST]; |
f42806df | 3959 | r = service_load_pid_file(s, !has_start_post); |
3a111838 MS |
3960 | if (!has_start_post && r < 0) { |
3961 | r = service_demand_pid_file(s); | |
b13ddbbc | 3962 | if (r < 0 || cgroup_good(s) == 0) |
c3fda31d | 3963 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_PROTOCOL); |
3a111838 MS |
3964 | break; |
3965 | } | |
034c6ed7 | 3966 | } else |
783e05d6 | 3967 | service_search_main_pid(s); |
034c6ed7 | 3968 | |
3a111838 | 3969 | service_enter_start_post(s); |
034c6ed7 LP |
3970 | break; |
3971 | ||
3972 | case SERVICE_START_POST: | |
f42806df | 3973 | if (f != SERVICE_SUCCESS) { |
ce359e98 | 3974 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
2096e009 | 3975 | break; |
034c6ed7 LP |
3976 | } |
3977 | ||
2096e009 | 3978 | if (s->pid_file) { |
f42806df | 3979 | r = service_load_pid_file(s, true); |
2096e009 MS |
3980 | if (r < 0) { |
3981 | r = service_demand_pid_file(s); | |
b13ddbbc | 3982 | if (r < 0 || cgroup_good(s) == 0) |
c35755fb | 3983 | service_enter_stop(s, SERVICE_FAILURE_PROTOCOL); |
2096e009 MS |
3984 | break; |
3985 | } | |
3986 | } else | |
783e05d6 | 3987 | service_search_main_pid(s); |
2096e009 | 3988 | |
f42806df | 3989 | service_enter_running(s, SERVICE_SUCCESS); |
3185a36b | 3990 | break; |
034c6ed7 LP |
3991 | |
3992 | case SERVICE_RELOAD: | |
3bd28bf7 LP |
3993 | case SERVICE_RELOAD_SIGNAL: |
3994 | case SERVICE_RELOAD_NOTIFY: | |
7236ce6e ZJS |
3995 | if (f == SERVICE_SUCCESS) |
3996 | if (service_load_pid_file(s, true) < 0) | |
3997 | service_search_main_pid(s); | |
3185a36b | 3998 | |
f42806df | 3999 | s->reload_result = f; |
3bd28bf7 | 4000 | |
d09df6b9 | 4001 | /* If the last notification we received from the service process indicates |
3bd28bf7 LP |
4002 | * we are still reloading, then don't leave reloading state just yet, just |
4003 | * transition into SERVICE_RELOAD_NOTIFY, to wait for the READY=1 coming, | |
4004 | * too. */ | |
4005 | if (s->notify_state == NOTIFY_RELOADING) | |
4006 | service_set_state(s, SERVICE_RELOAD_NOTIFY); | |
4007 | else | |
4008 | service_enter_running(s, SERVICE_SUCCESS); | |
034c6ed7 LP |
4009 | break; |
4010 | ||
4011 | case SERVICE_STOP: | |
f42806df | 4012 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); |
034c6ed7 LP |
4013 | break; |
4014 | ||
c87700a1 | 4015 | case SERVICE_STOP_WATCHDOG: |
034c6ed7 LP |
4016 | case SERVICE_STOP_SIGTERM: |
4017 | case SERVICE_STOP_SIGKILL: | |
4018 | if (main_pid_good(s) <= 0) | |
f42806df | 4019 | service_enter_stop_post(s, f); |
034c6ed7 | 4020 | |
846a07b5 | 4021 | /* If there is still a service process around, wait until |
034c6ed7 LP |
4022 | * that one quit, too */ |
4023 | break; | |
4024 | ||
4025 | case SERVICE_STOP_POST: | |
c1566ef0 AZ |
4026 | if (main_pid_good(s) <= 0) |
4027 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, f); | |
4028 | break; | |
4029 | ||
bf760801 | 4030 | case SERVICE_FINAL_WATCHDOG: |
034c6ed7 LP |
4031 | case SERVICE_FINAL_SIGTERM: |
4032 | case SERVICE_FINAL_SIGKILL: | |
bf108e55 LP |
4033 | if (main_pid_good(s) <= 0) |
4034 | service_enter_dead(s, f, true); | |
034c6ed7 LP |
4035 | break; |
4036 | ||
4c2f5842 LP |
4037 | case SERVICE_CLEANING: |
4038 | ||
4039 | if (s->clean_result == SERVICE_SUCCESS) | |
4040 | s->clean_result = f; | |
4041 | ||
4042 | service_enter_dead(s, SERVICE_SUCCESS, false); | |
4043 | break; | |
4044 | ||
034c6ed7 | 4045 | default: |
04499a70 | 4046 | assert_not_reached(); |
034c6ed7 LP |
4047 | } |
4048 | } | |
5cdabc8d LP |
4049 | } else /* Neither control nor main PID? If so, don't notify about anything */ |
4050 | notify_dbus = false; | |
c4e2ceae LP |
4051 | |
4052 | /* Notify clients about changed exit status */ | |
5cdabc8d LP |
4053 | if (notify_dbus) |
4054 | unit_add_to_dbus_queue(u); | |
a911bb9a | 4055 | |
846a07b5 FB |
4056 | /* We watch the main/control process otherwise we can't retrieve the unit they |
4057 | * belong to with cgroupv1. But if they are not our direct child, we won't get a | |
4058 | * SIGCHLD for them. Therefore we need to look for others to watch so we can | |
4059 | * detect when the cgroup becomes empty. Note that the control process is always | |
4060 | * our child so it's pointless to watch all other processes. */ | |
4061 | if (!control_pid_good(s)) | |
4062 | if (!s->main_pid_known || s->main_pid_alien) | |
4063 | (void) unit_enqueue_rewatch_pids(u); | |
034c6ed7 LP |
4064 | } |
4065 | ||
718db961 | 4066 | static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
e9fa1bf7 | 4067 | Service *s = ASSERT_PTR(SERVICE(userdata)); |
034c6ed7 | 4068 | |
718db961 | 4069 | assert(source == s->timer_event_source); |
034c6ed7 LP |
4070 | |
4071 | switch (s->state) { | |
4072 | ||
31cd5f63 | 4073 | case SERVICE_CONDITION: |
034c6ed7 LP |
4074 | case SERVICE_START_PRE: |
4075 | case SERVICE_START: | |
4076 | case SERVICE_START_POST: | |
bf760801 JK |
4077 | switch (s->timeout_start_failure_mode) { |
4078 | ||
4079 | case SERVICE_TIMEOUT_TERMINATE: | |
4080 | log_unit_warning(UNIT(s), "%s operation timed out. Terminating.", service_state_to_string(s->state)); | |
4081 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); | |
4082 | break; | |
4083 | ||
4084 | case SERVICE_TIMEOUT_ABORT: | |
4085 | log_unit_warning(UNIT(s), "%s operation timed out. Aborting.", service_state_to_string(s->state)); | |
4086 | service_enter_signal(s, SERVICE_STOP_WATCHDOG, SERVICE_FAILURE_TIMEOUT); | |
4087 | break; | |
4088 | ||
4089 | case SERVICE_TIMEOUT_KILL: | |
4090 | if (s->kill_context.send_sigkill) { | |
4091 | log_unit_warning(UNIT(s), "%s operation timed out. Killing.", service_state_to_string(s->state)); | |
4092 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); | |
4093 | } else { | |
4094 | log_unit_warning(UNIT(s), "%s operation timed out. Skipping SIGKILL.", service_state_to_string(s->state)); | |
4095 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); | |
4096 | } | |
4097 | break; | |
4098 | ||
4099 | default: | |
04499a70 | 4100 | assert_not_reached(); |
bf760801 | 4101 | } |
034c6ed7 LP |
4102 | break; |
4103 | ||
36c16a7c LP |
4104 | case SERVICE_RUNNING: |
4105 | log_unit_warning(UNIT(s), "Service reached runtime time limit. Stopping."); | |
4106 | service_enter_stop(s, SERVICE_FAILURE_TIMEOUT); | |
4107 | break; | |
4108 | ||
e2f3b44c | 4109 | case SERVICE_RELOAD: |
3bd28bf7 LP |
4110 | case SERVICE_RELOAD_SIGNAL: |
4111 | case SERVICE_RELOAD_NOTIFY: | |
089b64d5 | 4112 | log_unit_warning(UNIT(s), "Reload operation timed out. Killing reload process."); |
e9a4f676 | 4113 | service_kill_control_process(s); |
f42806df LP |
4114 | s->reload_result = SERVICE_FAILURE_TIMEOUT; |
4115 | service_enter_running(s, SERVICE_SUCCESS); | |
e2f3b44c LP |
4116 | break; |
4117 | ||
034c6ed7 | 4118 | case SERVICE_STOP: |
bf760801 JK |
4119 | switch (s->timeout_stop_failure_mode) { |
4120 | ||
4121 | case SERVICE_TIMEOUT_TERMINATE: | |
4122 | log_unit_warning(UNIT(s), "Stopping timed out. Terminating."); | |
4123 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); | |
4124 | break; | |
4125 | ||
4126 | case SERVICE_TIMEOUT_ABORT: | |
4127 | log_unit_warning(UNIT(s), "Stopping timed out. Aborting."); | |
4128 | service_enter_signal(s, SERVICE_STOP_WATCHDOG, SERVICE_FAILURE_TIMEOUT); | |
4129 | break; | |
4130 | ||
4131 | case SERVICE_TIMEOUT_KILL: | |
4132 | if (s->kill_context.send_sigkill) { | |
4133 | log_unit_warning(UNIT(s), "Stopping timed out. Killing."); | |
4134 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); | |
4135 | } else { | |
4136 | log_unit_warning(UNIT(s), "Stopping timed out. Skipping SIGKILL."); | |
4137 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); | |
4138 | } | |
4139 | break; | |
4140 | ||
4141 | default: | |
04499a70 | 4142 | assert_not_reached(); |
bf760801 | 4143 | } |
034c6ed7 LP |
4144 | break; |
4145 | ||
c87700a1 | 4146 | case SERVICE_STOP_WATCHDOG: |
bf760801 JK |
4147 | if (s->kill_context.send_sigkill) { |
4148 | log_unit_warning(UNIT(s), "State 'stop-watchdog' timed out. Killing."); | |
4149 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); | |
4150 | } else { | |
4151 | log_unit_warning(UNIT(s), "State 'stop-watchdog' timed out. Skipping SIGKILL."); | |
4152 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); | |
4153 | } | |
db2cb23b UTL |
4154 | break; |
4155 | ||
034c6ed7 | 4156 | case SERVICE_STOP_SIGTERM: |
bf760801 JK |
4157 | if (s->timeout_stop_failure_mode == SERVICE_TIMEOUT_ABORT) { |
4158 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Aborting."); | |
4159 | service_enter_signal(s, SERVICE_STOP_WATCHDOG, SERVICE_FAILURE_TIMEOUT); | |
4160 | } else if (s->kill_context.send_sigkill) { | |
f2341e0a | 4161 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Killing."); |
f42806df | 4162 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 4163 | } else { |
f2341e0a | 4164 | log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Skipping SIGKILL."); |
f42806df | 4165 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
ba035df2 LP |
4166 | } |
4167 | ||
034c6ed7 LP |
4168 | break; |
4169 | ||
4170 | case SERVICE_STOP_SIGKILL: | |
35b8ca3a | 4171 | /* Uh, we sent a SIGKILL and it is still not gone? |
034c6ed7 LP |
4172 | * Must be something we cannot kill, so let's just be |
4173 | * weirded out and continue */ | |
4174 | ||
f2341e0a | 4175 | log_unit_warning(UNIT(s), "Processes still around after SIGKILL. Ignoring."); |
f42806df | 4176 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); |
034c6ed7 LP |
4177 | break; |
4178 | ||
4179 | case SERVICE_STOP_POST: | |
bf760801 JK |
4180 | switch (s->timeout_stop_failure_mode) { |
4181 | ||
4182 | case SERVICE_TIMEOUT_TERMINATE: | |
4183 | log_unit_warning(UNIT(s), "State 'stop-post' timed out. Terminating."); | |
4184 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT); | |
4185 | break; | |
4186 | ||
4187 | case SERVICE_TIMEOUT_ABORT: | |
4188 | log_unit_warning(UNIT(s), "State 'stop-post' timed out. Aborting."); | |
4189 | service_enter_signal(s, SERVICE_FINAL_WATCHDOG, SERVICE_FAILURE_TIMEOUT); | |
4190 | break; | |
4191 | ||
4192 | case SERVICE_TIMEOUT_KILL: | |
4193 | if (s->kill_context.send_sigkill) { | |
4194 | log_unit_warning(UNIT(s), "State 'stop-post' timed out. Killing."); | |
4195 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT); | |
4196 | } else { | |
4197 | log_unit_warning(UNIT(s), "State 'stop-post' timed out. Skipping SIGKILL. Entering failed mode."); | |
4198 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false); | |
4199 | } | |
4200 | break; | |
4201 | ||
4202 | default: | |
04499a70 | 4203 | assert_not_reached(); |
bf760801 | 4204 | } |
034c6ed7 LP |
4205 | break; |
4206 | ||
bf760801 | 4207 | case SERVICE_FINAL_WATCHDOG: |
4819ff03 | 4208 | if (s->kill_context.send_sigkill) { |
bf760801 | 4209 | log_unit_warning(UNIT(s), "State 'final-watchdog' timed out. Killing."); |
f42806df | 4210 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT); |
ba035df2 | 4211 | } else { |
bf760801 JK |
4212 | log_unit_warning(UNIT(s), "State 'final-watchdog' timed out. Skipping SIGKILL. Entering failed mode."); |
4213 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false); | |
4214 | } | |
4215 | break; | |
4216 | ||
4217 | case SERVICE_FINAL_SIGTERM: | |
4218 | if (s->timeout_stop_failure_mode == SERVICE_TIMEOUT_ABORT) { | |
4219 | log_unit_warning(UNIT(s), "State 'final-sigterm' timed out. Aborting."); | |
4220 | service_enter_signal(s, SERVICE_FINAL_WATCHDOG, SERVICE_FAILURE_TIMEOUT); | |
4221 | } else if (s->kill_context.send_sigkill) { | |
4222 | log_unit_warning(UNIT(s), "State 'final-sigterm' timed out. Killing."); | |
4223 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT); | |
4224 | } else { | |
4225 | log_unit_warning(UNIT(s), "State 'final-sigterm' timed out. Skipping SIGKILL. Entering failed mode."); | |
f42806df | 4226 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false); |
ba035df2 LP |
4227 | } |
4228 | ||
034c6ed7 LP |
4229 | break; |
4230 | ||
4231 | case SERVICE_FINAL_SIGKILL: | |
f2341e0a | 4232 | log_unit_warning(UNIT(s), "Processes still around after final SIGKILL. Entering failed mode."); |
f42806df | 4233 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true); |
034c6ed7 LP |
4234 | break; |
4235 | ||
4236 | case SERVICE_AUTO_RESTART: | |
5291f26d | 4237 | if (s->restart_usec > 0) |
868f7d36 | 4238 | log_unit_debug(UNIT(s), |
be1adc27 | 4239 | "Service restart interval %s expired, scheduling restart.", |
5171356e | 4240 | FORMAT_TIMESPAN(service_restart_usec_next(s), USEC_PER_SEC)); |
5291f26d | 4241 | else |
868f7d36 ZJS |
4242 | log_unit_debug(UNIT(s), |
4243 | "Service has no hold-off time (RestartSec=0), scheduling restart."); | |
5ce6e7f5 | 4244 | |
034c6ed7 LP |
4245 | service_enter_restart(s); |
4246 | break; | |
4247 | ||
4c2f5842 LP |
4248 | case SERVICE_CLEANING: |
4249 | log_unit_warning(UNIT(s), "Cleaning timed out. killing."); | |
4250 | ||
4251 | if (s->clean_result == SERVICE_SUCCESS) | |
4252 | s->clean_result = SERVICE_FAILURE_TIMEOUT; | |
4253 | ||
4254 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, 0); | |
4255 | break; | |
4256 | ||
034c6ed7 | 4257 | default: |
04499a70 | 4258 | assert_not_reached(); |
034c6ed7 | 4259 | } |
718db961 LP |
4260 | |
4261 | return 0; | |
4262 | } | |
4263 | ||
4264 | static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata) { | |
e9fa1bf7 | 4265 | Service *s = ASSERT_PTR(SERVICE(userdata)); |
2787d83c | 4266 | usec_t watchdog_usec; |
718db961 | 4267 | |
718db961 LP |
4268 | assert(source == s->watchdog_event_source); |
4269 | ||
2787d83c M |
4270 | watchdog_usec = service_get_watchdog_usec(s); |
4271 | ||
2a12e32e JK |
4272 | if (UNIT(s)->manager->service_watchdogs) { |
4273 | log_unit_error(UNIT(s), "Watchdog timeout (limit %s)!", | |
5291f26d | 4274 | FORMAT_TIMESPAN(watchdog_usec, 1)); |
8bb2d17d | 4275 | |
c87700a1 | 4276 | service_enter_signal(s, SERVICE_STOP_WATCHDOG, SERVICE_FAILURE_WATCHDOG); |
2a12e32e JK |
4277 | } else |
4278 | log_unit_warning(UNIT(s), "Watchdog disabled! Ignoring watchdog timeout (limit %s)!", | |
5291f26d | 4279 | FORMAT_TIMESPAN(watchdog_usec, 1)); |
842129f5 | 4280 | |
718db961 | 4281 | return 0; |
5cb5a6ff LP |
4282 | } |
4283 | ||
3a45fdfc | 4284 | static void service_force_watchdog(Service *s) { |
e9fa1bf7 MY |
4285 | assert(s); |
4286 | ||
3a45fdfc MY |
4287 | if (!UNIT(s)->manager->service_watchdogs) |
4288 | return; | |
4289 | ||
4290 | log_unit_error(UNIT(s), "Watchdog request (last status: %s)!", | |
4291 | s->status_text ?: "<unset>"); | |
4292 | ||
4293 | service_enter_signal(s, SERVICE_STOP_WATCHDOG, SERVICE_FAILURE_WATCHDOG); | |
4294 | } | |
4295 | ||
f8d66947 | 4296 | static bool service_notify_message_authorized(Service *s, pid_t pid) { |
e3285237 | 4297 | assert(s); |
f8d66947 | 4298 | assert(pid_is_valid(pid)); |
8c47c732 | 4299 | |
19dff691 MY |
4300 | NotifyAccess notify_access = service_get_notify_access(s); |
4301 | ||
4302 | if (notify_access == NOTIFY_NONE) { | |
5734d5d0 | 4303 | /* Warn level only if no notifications are expected */ |
f8d66947 | 4304 | log_unit_warning(UNIT(s), "Got notification message from PID "PID_FMT", but reception is disabled", pid); |
e3285237 LP |
4305 | return false; |
4306 | } | |
4307 | ||
c79ab77c LP |
4308 | if (notify_access == NOTIFY_MAIN && pid != s->main_pid.pid) { |
4309 | if (pidref_is_set(&s->main_pid)) | |
5734d5d0 | 4310 | log_unit_debug(UNIT(s), "Got notification message from PID "PID_FMT", but reception only permitted for main PID "PID_FMT, pid, s->main_pid.pid); |
336c6e46 | 4311 | else |
5734d5d0 | 4312 | log_unit_debug(UNIT(s), "Got notification message from PID "PID_FMT", but reception only permitted for main PID which is currently not known", pid); |
e3285237 LP |
4313 | |
4314 | return false; | |
4315 | } | |
4316 | ||
c79ab77c LP |
4317 | if (notify_access == NOTIFY_EXEC && pid != s->main_pid.pid && pid != s->control_pid.pid) { |
4318 | if (pidref_is_set(&s->main_pid) && pidref_is_set(&s->control_pid)) | |
5734d5d0 | 4319 | log_unit_debug(UNIT(s), "Got notification message from PID "PID_FMT", but reception only permitted for main PID "PID_FMT" and control PID "PID_FMT, |
f8d66947 | 4320 | pid, s->main_pid.pid, s->control_pid.pid); |
c79ab77c | 4321 | else if (pidref_is_set(&s->main_pid)) |
5734d5d0 | 4322 | log_unit_debug(UNIT(s), "Got notification message from PID "PID_FMT", but reception only permitted for main PID "PID_FMT, pid, s->main_pid.pid); |
c79ab77c | 4323 | else if (pidref_is_set(&s->control_pid)) |
5734d5d0 | 4324 | log_unit_debug(UNIT(s), "Got notification message from PID "PID_FMT", but reception only permitted for control PID "PID_FMT, pid, s->control_pid.pid); |
6375bd20 | 4325 | else |
5734d5d0 | 4326 | log_unit_debug(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); |
e3285237 LP |
4327 | |
4328 | return false; | |
9711848f LP |
4329 | } |
4330 | ||
e3285237 LP |
4331 | return true; |
4332 | } | |
4333 | ||
db256aab LP |
4334 | static void service_notify_message( |
4335 | Unit *u, | |
4336 | const struct ucred *ucred, | |
fcee2755 | 4337 | char * const *tags, |
db256aab LP |
4338 | FDSet *fds) { |
4339 | ||
b7a22068 | 4340 | Service *s = ASSERT_PTR(SERVICE(u)); |
db256aab | 4341 | int r; |
e3285237 | 4342 | |
db256aab | 4343 | assert(ucred); |
e3285237 | 4344 | |
f8d66947 | 4345 | if (!service_notify_message_authorized(s, ucred->pid)) |
e3285237 LP |
4346 | return; |
4347 | ||
f1d34068 | 4348 | if (DEBUG_LOGGING) { |
b7a22068 | 4349 | _cleanup_free_ char *cc = strv_join(tags, ", "); |
0964cfb0 | 4350 | log_unit_debug(u, "Got notification message from PID "PID_FMT" (%s)", ucred->pid, empty_to_na(cc)); |
9711848f | 4351 | } |
c952c6ec | 4352 | |
b7a22068 MY |
4353 | usec_t monotonic_usec = USEC_INFINITY; |
4354 | bool notify_dbus = false; | |
4355 | const char *e; | |
4356 | ||
8c47c732 | 4357 | /* Interpret MAINPID= */ |
28849dba | 4358 | e = strv_find_startswith(tags, "MAINPID="); |
31197c68 MY |
4359 | if (e && IN_SET(s->state, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, |
4360 | SERVICE_RELOAD, SERVICE_RELOAD_SIGNAL, SERVICE_RELOAD_NOTIFY, | |
4361 | SERVICE_STOP, SERVICE_STOP_SIGTERM)) { | |
4362 | ||
495e75ed | 4363 | _cleanup_(pidref_done) PidRef new_main_pid = PIDREF_NULL; |
db256aab | 4364 | |
495e75ed LP |
4365 | r = pidref_set_pidstr(&new_main_pid, e); |
4366 | if (r < 0) | |
4367 | log_unit_warning_errno(u, r, "Failed to parse MAINPID=%s field in notification message, ignoring: %m", e); | |
4368 | else if (!s->main_pid_known || !pidref_equal(&new_main_pid, &s->main_pid)) { | |
db256aab | 4369 | |
495e75ed | 4370 | r = service_is_suitable_main_pid(s, &new_main_pid, LOG_WARNING); |
db256aab | 4371 | if (r == 0) { |
5238e957 | 4372 | /* The new main PID is a bit suspicious, which is OK if the sender is privileged. */ |
db256aab LP |
4373 | |
4374 | if (ucred->uid == 0) { | |
495e75ed | 4375 | 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 |
4376 | r = 1; |
4377 | } else | |
a3980843 | 4378 | log_unit_warning(u, "New main PID "PID_FMT" does not belong to service, refusing.", new_main_pid.pid); |
db256aab LP |
4379 | } |
4380 | if (r > 0) { | |
7e0e6b50 | 4381 | (void) service_set_main_pidref(s, TAKE_PIDREF(new_main_pid), /* start_timestamp = */ NULL); |
cdc2af3e | 4382 | |
495e75ed | 4383 | r = unit_watch_pidref(UNIT(s), &s->main_pid, /* exclusive= */ false); |
cdc2af3e | 4384 | if (r < 0) |
495e75ed | 4385 | log_unit_warning_errno(UNIT(s), r, "Failed to watch new main PID "PID_FMT" for service: %m", s->main_pid.pid); |
cdc2af3e | 4386 | |
db256aab LP |
4387 | notify_dbus = true; |
4388 | } | |
8c47c732 LP |
4389 | } |
4390 | } | |
4391 | ||
3bd28bf7 LP |
4392 | /* Parse MONOTONIC_USEC= */ |
4393 | e = strv_find_startswith(tags, "MONOTONIC_USEC="); | |
4394 | if (e) { | |
4395 | r = safe_atou64(e, &monotonic_usec); | |
4396 | if (r < 0) | |
4397 | log_unit_warning_errno(u, r, "Failed to parse MONOTONIC_USEC= field in notification message, ignoring: %s", e); | |
4398 | } | |
308d72dc | 4399 | |
3bd28bf7 LP |
4400 | /* Interpret READY=/STOPPING=/RELOADING=. STOPPING= wins over the others, and READY= over RELOADING= */ |
4401 | if (strv_contains(tags, "STOPPING=1")) { | |
4402 | s->notify_state = NOTIFY_STOPPING; | |
308d72dc | 4403 | |
3bd28bf7 LP |
4404 | if (IN_SET(s->state, SERVICE_RUNNING, SERVICE_RELOAD_SIGNAL, SERVICE_RELOAD_NOTIFY)) |
4405 | service_enter_stop_by_notify(s); | |
308d72dc | 4406 | |
3bd28bf7 | 4407 | notify_dbus = true; |
308d72dc | 4408 | |
3bd28bf7 | 4409 | } else if (strv_contains(tags, "READY=1")) { |
308d72dc | 4410 | |
3bd28bf7 | 4411 | s->notify_state = NOTIFY_READY; |
308d72dc | 4412 | |
3bd28bf7 LP |
4413 | /* Type=notify services inform us about completed initialization with READY=1 */ |
4414 | if (IN_SET(s->type, SERVICE_NOTIFY, SERVICE_NOTIFY_RELOAD) && | |
4415 | s->state == SERVICE_START) | |
4416 | service_enter_start_post(s); | |
308d72dc | 4417 | |
3bd28bf7 LP |
4418 | /* Sending READY=1 while we are reloading informs us that the reloading is complete. */ |
4419 | if (s->state == SERVICE_RELOAD_NOTIFY) | |
4420 | service_enter_running(s, SERVICE_SUCCESS); | |
308d72dc | 4421 | |
3bd28bf7 LP |
4422 | /* Combined RELOADING=1 and READY=1? Then this is indication that the service started and |
4423 | * immediately finished reloading. */ | |
4424 | if (s->state == SERVICE_RELOAD_SIGNAL && | |
4425 | strv_contains(tags, "RELOADING=1") && | |
4426 | monotonic_usec != USEC_INFINITY && | |
4427 | monotonic_usec >= s->reload_begin_usec) { | |
4428 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
308d72dc | 4429 | |
3bd28bf7 LP |
4430 | /* Propagate a reload explicitly */ |
4431 | r = manager_propagate_reload(UNIT(s)->manager, UNIT(s), JOB_FAIL, &error); | |
4432 | if (r < 0) | |
4433 | log_unit_warning(UNIT(s), "Failed to schedule propagation of reload, ignoring: %s", bus_error_message(&error, r)); | |
308d72dc | 4434 | |
3bd28bf7 | 4435 | service_enter_running(s, SERVICE_SUCCESS); |
cc2b7b11 | 4436 | } |
3bd28bf7 LP |
4437 | |
4438 | notify_dbus = true; | |
4439 | ||
4440 | } else if (strv_contains(tags, "RELOADING=1")) { | |
4441 | ||
4442 | s->notify_state = NOTIFY_RELOADING; | |
4443 | ||
4444 | /* Sending RELOADING=1 after we send SIGHUP to request a reload will transition | |
4445 | * things to "reload-notify" state, where we'll wait for READY=1 to let us know the | |
4446 | * reload is done. Note that we insist on a timestamp being sent along here, so that | |
4447 | * we know for sure this is a reload cycle initiated *after* we sent the signal */ | |
4448 | if (s->state == SERVICE_RELOAD_SIGNAL && | |
4449 | monotonic_usec != USEC_INFINITY && | |
4450 | monotonic_usec >= s->reload_begin_usec) | |
4451 | /* Note, we don't call service_enter_reload_by_notify() here, because we | |
4452 | * don't need reload propagation nor do we want to restart the time-out. */ | |
4453 | service_set_state(s, SERVICE_RELOAD_NOTIFY); | |
4454 | ||
4455 | if (s->state == SERVICE_RUNNING) | |
4456 | service_enter_reload_by_notify(s); | |
4457 | ||
4458 | notify_dbus = true; | |
8c47c732 LP |
4459 | } |
4460 | ||
4461 | /* Interpret STATUS= */ | |
28849dba | 4462 | e = strv_find_startswith(tags, "STATUS="); |
7f110ff9 | 4463 | if (e) { |
28849dba | 4464 | _cleanup_free_ char *t = NULL; |
8c47c732 | 4465 | |
28849dba | 4466 | if (!isempty(e)) { |
3eac1bca LP |
4467 | /* Note that this size limit check is mostly paranoia: since the datagram size we are willing |
4468 | * to process is already limited to NOTIFY_BUFFER_MAX, this limit here should never be hit. */ | |
4469 | if (strlen(e) > STATUS_TEXT_MAX) | |
4470 | log_unit_warning(u, "Status message overly long (%zu > %u), ignoring.", strlen(e), STATUS_TEXT_MAX); | |
4471 | else if (!utf8_is_valid(e)) | |
4472 | log_unit_warning(u, "Status message in notification message is not UTF-8 clean, ignoring."); | |
28849dba | 4473 | else { |
28849dba LP |
4474 | t = strdup(e); |
4475 | if (!t) | |
4476 | log_oom(); | |
3a2776bc | 4477 | } |
28849dba | 4478 | } |
8c47c732 | 4479 | |
30b5275a | 4480 | if (!streq_ptr(s->status_text, t)) { |
3b319885 | 4481 | free_and_replace(s->status_text, t); |
30b5275a | 4482 | notify_dbus = true; |
28849dba | 4483 | } |
8c47c732 | 4484 | } |
842129f5 | 4485 | |
19dff691 MY |
4486 | /* Interpret NOTIFYACCESS= */ |
4487 | e = strv_find_startswith(tags, "NOTIFYACCESS="); | |
4488 | if (e) { | |
4489 | NotifyAccess notify_access; | |
4490 | ||
4491 | notify_access = notify_access_from_string(e); | |
4492 | if (notify_access < 0) | |
4493 | log_unit_warning_errno(u, notify_access, | |
4494 | "Failed to parse NOTIFYACCESS= field value '%s' in notification message, ignoring: %m", e); | |
4495 | ||
4496 | /* We don't need to check whether the new access mode is more strict than what is | |
4497 | * already in use, since only the privileged process is allowed to change it | |
4498 | * in the first place. */ | |
4499 | if (service_get_notify_access(s) != notify_access) { | |
4500 | service_override_notify_access(s, notify_access); | |
4501 | notify_dbus = true; | |
4502 | } | |
4503 | } | |
4504 | ||
4774e357 | 4505 | /* Interpret ERRNO= */ |
28849dba | 4506 | e = strv_find_startswith(tags, "ERRNO="); |
4774e357 MAA |
4507 | if (e) { |
4508 | int status_errno; | |
4509 | ||
2fa40742 LP |
4510 | status_errno = parse_errno(e); |
4511 | if (status_errno < 0) | |
4512 | log_unit_warning_errno(u, status_errno, | |
5e1ee764 | 4513 | "Failed to parse ERRNO= field value '%s' in notification message: %m", e); |
2fa40742 LP |
4514 | else if (s->status_errno != status_errno) { |
4515 | s->status_errno = status_errno; | |
4516 | notify_dbus = true; | |
4774e357 MAA |
4517 | } |
4518 | } | |
4519 | ||
a327431b DB |
4520 | /* Interpret EXTEND_TIMEOUT= */ |
4521 | e = strv_find_startswith(tags, "EXTEND_TIMEOUT_USEC="); | |
4522 | if (e) { | |
4523 | usec_t extend_timeout_usec; | |
4524 | if (safe_atou64(e, &extend_timeout_usec) < 0) | |
4525 | log_unit_warning(u, "Failed to parse EXTEND_TIMEOUT_USEC=%s", e); | |
4526 | else | |
4527 | service_extend_timeout(s, extend_timeout_usec); | |
4528 | } | |
4529 | ||
6f285378 | 4530 | /* Interpret WATCHDOG= */ |
99b43caf JK |
4531 | e = strv_find_startswith(tags, "WATCHDOG="); |
4532 | if (e) { | |
4533 | if (streq(e, "1")) | |
4534 | service_reset_watchdog(s); | |
4535 | else if (streq(e, "trigger")) | |
4536 | service_force_watchdog(s); | |
4537 | else | |
4538 | log_unit_warning(u, "Passed WATCHDOG= field is invalid, ignoring."); | |
4539 | } | |
c4e2ceae | 4540 | |
c45d11cb LP |
4541 | e = strv_find_startswith(tags, "WATCHDOG_USEC="); |
4542 | if (e) { | |
4543 | usec_t watchdog_override_usec; | |
4544 | if (safe_atou64(e, &watchdog_override_usec) < 0) | |
4545 | log_unit_warning(u, "Failed to parse WATCHDOG_USEC=%s", e); | |
4546 | else | |
95d0d8ed | 4547 | service_override_watchdog_timeout(s, watchdog_override_usec); |
c45d11cb LP |
4548 | } |
4549 | ||
e78ee06d LP |
4550 | /* Process FD store messages. Either FDSTOREREMOVE=1 for removal, or FDSTORE=1 for addition. In both cases, |
4551 | * process FDNAME= for picking the file descriptor name to use. Note that FDNAME= is required when removing | |
4552 | * fds, but optional when pushing in new fds, for compatibility reasons. */ | |
d29cc4d6 | 4553 | if (strv_contains(tags, "FDSTOREREMOVE=1")) { |
e78ee06d LP |
4554 | const char *name; |
4555 | ||
4556 | name = strv_find_startswith(tags, "FDNAME="); | |
4557 | if (!name || !fdname_is_valid(name)) | |
4558 | log_unit_warning(u, "FDSTOREREMOVE=1 requested, but no valid file descriptor name passed, ignoring."); | |
4559 | else | |
4560 | service_remove_fd_store(s, name); | |
4561 | ||
d29cc4d6 | 4562 | } else if (strv_contains(tags, "FDSTORE=1")) { |
8dd4c05b LP |
4563 | const char *name; |
4564 | ||
4565 | name = strv_find_startswith(tags, "FDNAME="); | |
4566 | if (name && !fdname_is_valid(name)) { | |
4567 | log_unit_warning(u, "Passed FDNAME= name is invalid, ignoring."); | |
4568 | name = NULL; | |
4569 | } | |
4570 | ||
cb5a46b8 | 4571 | (void) service_add_fd_store_set(s, fds, name, !strv_contains(tags, "FDPOLL=0")); |
8dd4c05b | 4572 | } |
a354329f | 4573 | |
c4e2ceae | 4574 | /* Notify clients about changed status or main pid */ |
30b5275a LP |
4575 | if (notify_dbus) |
4576 | unit_add_to_dbus_queue(u); | |
8c47c732 LP |
4577 | } |
4578 | ||
3c1d1ca1 LP |
4579 | static void service_handoff_timestamp( |
4580 | Unit *u, | |
4581 | const struct ucred *ucred, | |
4582 | const dual_timestamp *ts) { | |
4583 | ||
4584 | Service *s = ASSERT_PTR(SERVICE(u)); | |
4585 | ||
4586 | assert(ucred); | |
4587 | assert(ts); | |
4588 | ||
4589 | if (s->main_pid.pid == ucred->pid) { | |
4590 | if (s->main_command) | |
4591 | exec_status_handoff(&s->main_command->exec_status, ucred, ts); | |
4592 | ||
4593 | exec_status_handoff(&s->main_exec_status, ucred, ts); | |
4594 | } else if (s->control_pid.pid == ucred->pid && s->control_command) | |
4595 | exec_status_handoff(&s->control_command->exec_status, ucred, ts); | |
4596 | else | |
4597 | return; | |
4598 | ||
4599 | unit_add_to_dbus_queue(u); | |
4600 | } | |
4601 | ||
7a7821c8 | 4602 | static int service_get_timeout(Unit *u, usec_t *timeout) { |
e9fa1bf7 | 4603 | Service *s = ASSERT_PTR(SERVICE(u)); |
7a7821c8 | 4604 | uint64_t t; |
68db7a3b ZJS |
4605 | int r; |
4606 | ||
e9fa1bf7 MY |
4607 | assert(timeout); |
4608 | ||
68db7a3b ZJS |
4609 | if (!s->timer_event_source) |
4610 | return 0; | |
4611 | ||
7a7821c8 | 4612 | r = sd_event_source_get_time(s->timer_event_source, &t); |
68db7a3b ZJS |
4613 | if (r < 0) |
4614 | return r; | |
7a7821c8 LP |
4615 | if (t == USEC_INFINITY) |
4616 | return 0; | |
68db7a3b | 4617 | |
7a7821c8 | 4618 | *timeout = t; |
68db7a3b ZJS |
4619 | return 1; |
4620 | } | |
4621 | ||
f5a9d2ee | 4622 | static usec_t service_get_timeout_start_usec(Unit *u) { |
e9fa1bf7 | 4623 | Service *s = ASSERT_PTR(SERVICE(u)); |
f5a9d2ee | 4624 | return s->timeout_start_usec; |
4625 | } | |
4626 | ||
e39eb045 LP |
4627 | static bool pick_up_pid_from_bus_name(Service *s) { |
4628 | assert(s); | |
4629 | ||
4630 | /* If the service is running but we have no main PID yet, get it from the owner of the D-Bus name */ | |
4631 | ||
c79ab77c | 4632 | return !pidref_is_set(&s->main_pid) && |
e39eb045 LP |
4633 | IN_SET(s->state, |
4634 | SERVICE_START, | |
4635 | SERVICE_START_POST, | |
4636 | SERVICE_RUNNING, | |
3bd28bf7 LP |
4637 | SERVICE_RELOAD, |
4638 | SERVICE_RELOAD_SIGNAL, | |
4639 | SERVICE_RELOAD_NOTIFY); | |
e39eb045 LP |
4640 | } |
4641 | ||
4642 | static int bus_name_pid_lookup_callback(sd_bus_message *reply, void *userdata, sd_bus_error *ret_error) { | |
e9fa1bf7 | 4643 | Service *s = ASSERT_PTR(SERVICE(userdata)); |
495e75ed | 4644 | _cleanup_(pidref_done) PidRef pidref = PIDREF_NULL; |
e39eb045 | 4645 | const sd_bus_error *e; |
e39eb045 | 4646 | uint32_t pid; |
e39eb045 LP |
4647 | int r; |
4648 | ||
4649 | assert(reply); | |
e39eb045 | 4650 | |
e39eb045 LP |
4651 | s->bus_name_pid_lookup_slot = sd_bus_slot_unref(s->bus_name_pid_lookup_slot); |
4652 | ||
4653 | if (!s->bus_name || !pick_up_pid_from_bus_name(s)) | |
4654 | return 1; | |
4655 | ||
4656 | e = sd_bus_message_get_error(reply); | |
4657 | if (e) { | |
4658 | r = sd_bus_error_get_errno(e); | |
4659 | log_warning_errno(r, "GetConnectionUnixProcessID() failed: %s", bus_error_message(e, r)); | |
4660 | return 1; | |
4661 | } | |
4662 | ||
4663 | r = sd_bus_message_read(reply, "u", &pid); | |
4664 | if (r < 0) { | |
4665 | bus_log_parse_error(r); | |
4666 | return 1; | |
4667 | } | |
4668 | ||
495e75ed LP |
4669 | r = pidref_set_pid(&pidref, pid); |
4670 | if (r < 0) { | |
4671 | log_debug_errno(r, "GetConnectionUnixProcessID() returned invalid PID: %m"); | |
e39eb045 LP |
4672 | return 1; |
4673 | } | |
4674 | ||
e9fa1bf7 | 4675 | log_unit_debug(UNIT(s), "D-Bus name %s is now owned by process " PID_FMT, s->bus_name, pidref.pid); |
e39eb045 | 4676 | |
7e0e6b50 | 4677 | (void) service_set_main_pidref(s, TAKE_PIDREF(pidref), /* start_timestamp = */ NULL); |
495e75ed | 4678 | (void) unit_watch_pidref(UNIT(s), &s->main_pid, /* exclusive= */ false); |
e39eb045 LP |
4679 | return 1; |
4680 | } | |
4681 | ||
fc67a943 | 4682 | static void service_bus_name_owner_change(Unit *u, const char *new_owner) { |
e9fa1bf7 | 4683 | Service *s = ASSERT_PTR(SERVICE(u)); |
718db961 | 4684 | int r; |
05e343b7 | 4685 | |
fc67a943 LP |
4686 | if (new_owner) |
4687 | log_unit_debug(u, "D-Bus name %s now owned by %s", s->bus_name, new_owner); | |
05e343b7 | 4688 | else |
fc67a943 | 4689 | log_unit_debug(u, "D-Bus name %s now not owned by anyone.", s->bus_name); |
05e343b7 | 4690 | |
d7a0f1f4 | 4691 | s->bus_name_good = new_owner; |
05e343b7 | 4692 | |
d8ccf5fd DM |
4693 | /* Track the current owner, so we can reconstruct changes after a daemon reload */ |
4694 | r = free_and_strdup(&s->bus_name_owner, new_owner); | |
4695 | if (r < 0) { | |
4696 | log_unit_error_errno(u, r, "Unable to set new bus name owner %s: %m", new_owner); | |
4697 | return; | |
4698 | } | |
4699 | ||
05e343b7 LP |
4700 | if (s->type == SERVICE_DBUS) { |
4701 | ||
4702 | /* service_enter_running() will figure out what to | |
4703 | * do */ | |
4704 | if (s->state == SERVICE_RUNNING) | |
f42806df | 4705 | service_enter_running(s, SERVICE_SUCCESS); |
05e343b7 LP |
4706 | else if (s->state == SERVICE_START && new_owner) |
4707 | service_enter_start_post(s); | |
4708 | ||
e39eb045 | 4709 | } else if (new_owner && pick_up_pid_from_bus_name(s)) { |
05e343b7 | 4710 | |
718db961 | 4711 | /* Try to acquire PID from bus service */ |
05e343b7 | 4712 | |
e39eb045 LP |
4713 | s->bus_name_pid_lookup_slot = sd_bus_slot_unref(s->bus_name_pid_lookup_slot); |
4714 | ||
4715 | r = sd_bus_call_method_async( | |
4716 | u->manager->api_bus, | |
4717 | &s->bus_name_pid_lookup_slot, | |
4718 | "org.freedesktop.DBus", | |
4719 | "/org/freedesktop/DBus", | |
4720 | "org.freedesktop.DBus", | |
4721 | "GetConnectionUnixProcessID", | |
4722 | bus_name_pid_lookup_callback, | |
4723 | s, | |
4724 | "s", | |
4725 | s->bus_name); | |
4726 | if (r < 0) | |
4727 | log_debug_errno(r, "Failed to request owner PID of service name, ignoring: %m"); | |
7400b9d2 | 4728 | } |
05e343b7 LP |
4729 | } |
4730 | ||
3fabebf4 LP |
4731 | int service_set_socket_fd( |
4732 | Service *s, | |
4733 | int fd, | |
4734 | Socket *sock, | |
82bdb3ed | 4735 | SocketPeer *peer, /* reference to object is donated to us on success */ |
3fabebf4 LP |
4736 | bool selinux_context_net) { |
4737 | ||
4738 | _cleanup_free_ char *peer_text = NULL; | |
79a98c60 | 4739 | int r; |
57020a3a | 4740 | |
4f2d528d LP |
4741 | assert(s); |
4742 | assert(fd >= 0); | |
23908d84 | 4743 | assert(sock); |
4f2d528d | 4744 | |
7f2fbbff LP |
4745 | /* This is called by the socket code when instantiating a new service for a stream socket and the socket needs |
4746 | * to be configured. We take ownership of the passed fd on success. */ | |
4f2d528d | 4747 | |
1124fe6f | 4748 | if (UNIT(s)->load_state != UNIT_LOADED) |
4f2d528d LP |
4749 | return -EINVAL; |
4750 | ||
4751 | if (s->socket_fd >= 0) | |
4752 | return -EBUSY; | |
4753 | ||
3fabebf4 LP |
4754 | assert(!s->socket_peer); |
4755 | ||
b9c1883a | 4756 | if (!IN_SET(s->state, SERVICE_DEAD, SERVICE_DEAD_RESOURCES_PINNED)) |
4f2d528d LP |
4757 | return -EAGAIN; |
4758 | ||
3fabebf4 | 4759 | if (getpeername_pretty(fd, true, &peer_text) >= 0) { |
79a98c60 LP |
4760 | |
4761 | if (UNIT(s)->description) { | |
c2b2df60 | 4762 | _cleanup_free_ char *a = NULL; |
79a98c60 | 4763 | |
3fabebf4 | 4764 | a = strjoin(UNIT(s)->description, " (", peer_text, ")"); |
79a98c60 LP |
4765 | if (!a) |
4766 | return -ENOMEM; | |
4767 | ||
4768 | r = unit_set_description(UNIT(s), a); | |
4769 | } else | |
3fabebf4 | 4770 | r = unit_set_description(UNIT(s), peer_text); |
79a98c60 LP |
4771 | if (r < 0) |
4772 | return r; | |
4773 | } | |
4774 | ||
23908d84 | 4775 | r = unit_add_two_dependencies(UNIT(s), UNIT_AFTER, UNIT_TRIGGERED_BY, UNIT(sock), false, UNIT_DEPENDENCY_IMPLICIT); |
7f2fbbff | 4776 | if (r < 0) |
23908d84 MY |
4777 | return log_unit_debug_errno(UNIT(s), r, |
4778 | "Failed to add After=/TriggeredBy= dependencies on socket unit: %m"); | |
7f2fbbff | 4779 | |
4f2d528d | 4780 | s->socket_fd = fd; |
d6a911e9 | 4781 | s->socket_peer = peer; |
16115b0a | 4782 | s->socket_fd_selinux_context_net = selinux_context_net; |
6cf6bbc2 | 4783 | |
7f7d01ed | 4784 | unit_ref_set(&s->accept_socket, UNIT(s), UNIT(sock)); |
7f2fbbff | 4785 | return 0; |
4f2d528d LP |
4786 | } |
4787 | ||
fdf20a31 | 4788 | static void service_reset_failed(Unit *u) { |
e9fa1bf7 | 4789 | Service *s = ASSERT_PTR(SERVICE(u)); |
5632e374 | 4790 | |
fdf20a31 | 4791 | if (s->state == SERVICE_FAILED) |
b9c1883a | 4792 | service_set_state(s, service_determine_dead_state(s)); |
5632e374 | 4793 | |
f42806df LP |
4794 | s->result = SERVICE_SUCCESS; |
4795 | s->reload_result = SERVICE_SUCCESS; | |
4c2f5842 | 4796 | s->clean_result = SERVICE_SUCCESS; |
7a0019d3 LP |
4797 | s->n_restarts = 0; |
4798 | s->flush_n_restarts = false; | |
5632e374 LP |
4799 | } |
4800 | ||
3e22239d YW |
4801 | static PidRef* service_main_pid(Unit *u, bool *ret_is_alien) { |
4802 | Service *s = ASSERT_PTR(SERVICE(u)); | |
4803 | ||
4804 | if (ret_is_alien) | |
4805 | *ret_is_alien = s->main_pid_alien; | |
4806 | ||
4807 | return &s->main_pid; | |
291d565a LP |
4808 | } |
4809 | ||
37eb258e LP |
4810 | static PidRef* service_control_pid(Unit *u) { |
4811 | return &ASSERT_PTR(SERVICE(u))->control_pid; | |
291d565a LP |
4812 | } |
4813 | ||
bb2c7685 | 4814 | static bool service_needs_console(Unit *u) { |
e9fa1bf7 | 4815 | Service *s = ASSERT_PTR(SERVICE(u)); |
bb2c7685 LP |
4816 | |
4817 | /* We provide our own implementation of this here, instead of relying of the generic implementation | |
4818 | * unit_needs_console() provides, since we want to return false if we are in SERVICE_EXITED state. */ | |
4819 | ||
4820 | if (!exec_context_may_touch_console(&s->exec_context)) | |
4821 | return false; | |
4822 | ||
4823 | return IN_SET(s->state, | |
31cd5f63 | 4824 | SERVICE_CONDITION, |
bb2c7685 LP |
4825 | SERVICE_START_PRE, |
4826 | SERVICE_START, | |
4827 | SERVICE_START_POST, | |
4828 | SERVICE_RUNNING, | |
4829 | SERVICE_RELOAD, | |
3bd28bf7 LP |
4830 | SERVICE_RELOAD_SIGNAL, |
4831 | SERVICE_RELOAD_NOTIFY, | |
bb2c7685 | 4832 | SERVICE_STOP, |
c87700a1 | 4833 | SERVICE_STOP_WATCHDOG, |
bb2c7685 LP |
4834 | SERVICE_STOP_SIGTERM, |
4835 | SERVICE_STOP_SIGKILL, | |
4836 | SERVICE_STOP_POST, | |
bf760801 | 4837 | SERVICE_FINAL_WATCHDOG, |
bb2c7685 LP |
4838 | SERVICE_FINAL_SIGTERM, |
4839 | SERVICE_FINAL_SIGKILL); | |
4840 | } | |
4841 | ||
7af67e9a | 4842 | static int service_exit_status(Unit *u) { |
e9fa1bf7 | 4843 | Service *s = ASSERT_PTR(SERVICE(u)); |
7af67e9a LP |
4844 | |
4845 | if (s->main_exec_status.pid <= 0 || | |
4846 | !dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) | |
4847 | return -ENODATA; | |
4848 | ||
4849 | if (s->main_exec_status.code != CLD_EXITED) | |
4850 | return -EBADE; | |
4851 | ||
4852 | return s->main_exec_status.status; | |
4853 | } | |
4854 | ||
5e1669ff | 4855 | static const char* service_status_text(Unit *u) { |
e9fa1bf7 | 4856 | Service *s = ASSERT_PTR(SERVICE(u)); |
5e1669ff ZJS |
4857 | |
4858 | return s->status_text; | |
4859 | } | |
4860 | ||
4c2f5842 | 4861 | static int service_clean(Unit *u, ExecCleanMask mask) { |
e9fa1bf7 | 4862 | Service *s = ASSERT_PTR(SERVICE(u)); |
4c2f5842 | 4863 | _cleanup_strv_free_ char **l = NULL; |
4fb8f1e8 | 4864 | bool may_clean_fdstore = false; |
4c2f5842 LP |
4865 | int r; |
4866 | ||
4c2f5842 LP |
4867 | assert(mask != 0); |
4868 | ||
4fb8f1e8 | 4869 | if (!IN_SET(s->state, SERVICE_DEAD, SERVICE_DEAD_RESOURCES_PINNED)) |
4c2f5842 LP |
4870 | return -EBUSY; |
4871 | ||
4fb8f1e8 | 4872 | /* Determine if there's anything we could potentially clean */ |
4c2f5842 LP |
4873 | r = exec_context_get_clean_directories(&s->exec_context, u->manager->prefix, mask, &l); |
4874 | if (r < 0) | |
4875 | return r; | |
4876 | ||
4fb8f1e8 LP |
4877 | if (mask & EXEC_CLEAN_FDSTORE) |
4878 | may_clean_fdstore = s->n_fd_store > 0 || s->n_fd_store_max > 0; | |
4879 | ||
4880 | if (strv_isempty(l) && !may_clean_fdstore) | |
4881 | return -EUNATCH; /* Nothing to potentially clean */ | |
4882 | ||
4883 | /* Let's clean the stuff we can clean quickly */ | |
4884 | if (may_clean_fdstore) | |
4885 | service_release_fd_store(s); | |
4886 | ||
4887 | /* If we are done, leave quickly */ | |
4888 | if (strv_isempty(l)) { | |
4889 | if (s->state == SERVICE_DEAD_RESOURCES_PINNED && !s->fd_store) | |
4890 | service_set_state(s, SERVICE_DEAD); | |
4891 | return 0; | |
4892 | } | |
4c2f5842 | 4893 | |
4fb8f1e8 | 4894 | /* We need to clean disk stuff. This is slow, hence do it out of process, and change state */ |
4c2f5842 LP |
4895 | service_unwatch_control_pid(s); |
4896 | s->clean_result = SERVICE_SUCCESS; | |
4897 | s->control_command = NULL; | |
4898 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
4899 | ||
e5d6dcce | 4900 | r = service_arm_timer(s, /* relative= */ true, s->exec_context.timeout_clean_usec); |
10691b9e LP |
4901 | if (r < 0) { |
4902 | log_unit_warning_errno(u, r, "Failed to install timer: %m"); | |
4c2f5842 | 4903 | goto fail; |
10691b9e | 4904 | } |
4c2f5842 | 4905 | |
4775b55d | 4906 | r = unit_fork_and_watch_rm_rf(u, l, &s->control_pid); |
10691b9e LP |
4907 | if (r < 0) { |
4908 | log_unit_warning_errno(u, r, "Failed to spawn cleaning task: %m"); | |
c79ab77c | 4909 | goto fail; |
10691b9e | 4910 | } |
4c2f5842 | 4911 | |
c79ab77c | 4912 | service_set_state(s, SERVICE_CLEANING); |
4c2f5842 LP |
4913 | return 0; |
4914 | ||
4915 | fail: | |
4c2f5842 | 4916 | s->clean_result = SERVICE_FAILURE_RESOURCES; |
5dcadb4c | 4917 | s->timer_event_source = sd_event_source_disable_unref(s->timer_event_source); |
4c2f5842 LP |
4918 | return r; |
4919 | } | |
4920 | ||
4921 | static int service_can_clean(Unit *u, ExecCleanMask *ret) { | |
e9fa1bf7 | 4922 | Service *s = ASSERT_PTR(SERVICE(u)); |
4fb8f1e8 LP |
4923 | ExecCleanMask mask = 0; |
4924 | int r; | |
4c2f5842 | 4925 | |
4fb8f1e8 LP |
4926 | assert(ret); |
4927 | ||
4928 | r = exec_context_get_clean_mask(&s->exec_context, &mask); | |
4929 | if (r < 0) | |
4930 | return r; | |
4c2f5842 | 4931 | |
4fb8f1e8 LP |
4932 | if (s->n_fd_store_max > 0) |
4933 | mask |= EXEC_CLEAN_FDSTORE; | |
4934 | ||
4935 | *ret = mask; | |
4936 | return 0; | |
4c2f5842 LP |
4937 | } |
4938 | ||
e9fa1bf7 MY |
4939 | static const char* service_finished_job(Unit *u, JobType t, JobResult result) { |
4940 | Service *s = ASSERT_PTR(SERVICE(u)); | |
4941 | ||
04d232d8 ZJS |
4942 | if (t == JOB_START && |
4943 | result == JOB_DONE && | |
e9fa1bf7 | 4944 | s->type == SERVICE_ONESHOT) |
04d232d8 | 4945 | return "Finished %s."; |
eda0cbf0 ZJS |
4946 | |
4947 | /* Fall back to generic */ | |
4948 | return NULL; | |
4949 | } | |
4950 | ||
705578c3 | 4951 | static int service_can_start(Unit *u) { |
e9fa1bf7 | 4952 | Service *s = ASSERT_PTR(SERVICE(u)); |
9727f242 DDM |
4953 | int r; |
4954 | ||
9727f242 DDM |
4955 | /* Make sure we don't enter a busy loop of some kind. */ |
4956 | r = unit_test_start_limit(u); | |
4957 | if (r < 0) { | |
4958 | service_enter_dead(s, SERVICE_FAILURE_START_LIMIT_HIT, false); | |
4959 | return r; | |
4960 | } | |
4961 | ||
705578c3 | 4962 | return 1; |
9727f242 DDM |
4963 | } |
4964 | ||
c25fac9a | 4965 | static void service_release_resources(Unit *u) { |
e9fa1bf7 | 4966 | Service *s = ASSERT_PTR(SERVICE(u)); |
c25fac9a LP |
4967 | |
4968 | /* Invoked by the unit state engine, whenever it realizes that unit is dead and there's no job | |
4969 | * anymore for it, and it hence is a good idea to release resources */ | |
4970 | ||
4971 | /* Don't release resources if this is a transitionary failed/dead state | |
4972 | * (i.e. SERVICE_DEAD_BEFORE_AUTO_RESTART/SERVICE_FAILED_BEFORE_AUTO_RESTART), insist on a permanent | |
4973 | * failure state. */ | |
b9c1883a | 4974 | if (!IN_SET(s->state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_DEAD_RESOURCES_PINNED)) |
c25fac9a LP |
4975 | return; |
4976 | ||
4977 | log_unit_debug(u, "Releasing resources..."); | |
4978 | ||
81a1d6d6 | 4979 | service_release_socket_fd(s); |
c25fac9a | 4980 | service_release_stdio_fd(s); |
b9c1883a LP |
4981 | |
4982 | if (s->fd_store_preserve_mode != EXEC_PRESERVE_YES) | |
4983 | service_release_fd_store(s); | |
4984 | ||
4985 | if (s->state == SERVICE_DEAD_RESOURCES_PINNED && !s->fd_store) | |
4986 | service_set_state(s, SERVICE_DEAD); | |
c25fac9a LP |
4987 | } |
4988 | ||
8017ed7e LP |
4989 | int service_determine_exec_selinux_label(Service *s, char **ret) { |
4990 | int r; | |
4991 | ||
4992 | assert(s); | |
4993 | assert(ret); | |
4994 | ||
4995 | if (!mac_selinux_use()) | |
4996 | return -ENODATA; | |
4997 | ||
4998 | /* Returns the SELinux label used for execution of the main service binary */ | |
4999 | ||
045d9424 ZJS |
5000 | if (s->exec_context.selinux_context) |
5001 | /* Prefer the explicitly configured label if there is one */ | |
5002 | return strdup_to(ret, s->exec_context.selinux_context); | |
8017ed7e LP |
5003 | |
5004 | if (s->exec_context.root_image || | |
5005 | s->exec_context.n_extension_images > 0 || | |
5006 | !strv_isempty(s->exec_context.extension_directories)) /* We cannot chase paths through images */ | |
5007 | 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."); | |
5008 | ||
5009 | ExecCommand *c = s->exec_command[SERVICE_EXEC_START]; | |
5010 | if (!c) | |
5011 | return -ENODATA; | |
5012 | ||
5013 | _cleanup_free_ char *path = NULL; | |
5014 | r = chase(c->path, s->exec_context.root_directory, CHASE_PREFIX_ROOT, &path, NULL); | |
5015 | if (r < 0) { | |
5016 | log_unit_debug_errno(UNIT(s), r, "Failed to resolve service binary '%s', ignoring.", c->path); | |
5017 | return -ENODATA; | |
5018 | } | |
5019 | ||
5020 | r = mac_selinux_get_create_label_from_exe(path, ret); | |
5021 | if (ERRNO_IS_NEG_NOT_SUPPORTED(r)) { | |
5022 | log_unit_debug_errno(UNIT(s), r, "Reading SELinux label off binary '%s' is not supported, ignoring.", path); | |
5023 | return -ENODATA; | |
5024 | } | |
5025 | if (ERRNO_IS_NEG_PRIVILEGE(r)) { | |
5026 | log_unit_debug_errno(UNIT(s), r, "Can't read SELinux label off binary '%s', due to privileges, ignoring.", path); | |
5027 | return -ENODATA; | |
5028 | } | |
5029 | if (r < 0) | |
5030 | return log_unit_debug_errno(UNIT(s), r, "Failed to read SELinux label off binary '%s': %m", path); | |
5031 | ||
5032 | return 0; | |
5033 | } | |
5034 | ||
94f04347 | 5035 | static const char* const service_restart_table[_SERVICE_RESTART_MAX] = { |
48d83e33 ZJS |
5036 | [SERVICE_RESTART_NO] = "no", |
5037 | [SERVICE_RESTART_ON_SUCCESS] = "on-success", | |
5038 | [SERVICE_RESTART_ON_FAILURE] = "on-failure", | |
6cfe2fde | 5039 | [SERVICE_RESTART_ON_ABNORMAL] = "on-abnormal", |
dc99a976 | 5040 | [SERVICE_RESTART_ON_WATCHDOG] = "on-watchdog", |
48d83e33 ZJS |
5041 | [SERVICE_RESTART_ON_ABORT] = "on-abort", |
5042 | [SERVICE_RESTART_ALWAYS] = "always", | |
94f04347 LP |
5043 | }; |
5044 | ||
5045 | DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart); | |
5046 | ||
e568fea9 RP |
5047 | static const char* const service_restart_mode_table[_SERVICE_RESTART_MODE_MAX] = { |
5048 | [SERVICE_RESTART_MODE_NORMAL] = "normal", | |
17f6b640 | 5049 | [SERVICE_RESTART_MODE_DIRECT] = "direct", |
e568fea9 RP |
5050 | }; |
5051 | ||
5052 | DEFINE_STRING_TABLE_LOOKUP(service_restart_mode, ServiceRestartMode); | |
5053 | ||
94f04347 | 5054 | static const char* const service_type_table[_SERVICE_TYPE_MAX] = { |
3bd28bf7 LP |
5055 | [SERVICE_SIMPLE] = "simple", |
5056 | [SERVICE_FORKING] = "forking", | |
5057 | [SERVICE_ONESHOT] = "oneshot", | |
5058 | [SERVICE_DBUS] = "dbus", | |
5059 | [SERVICE_NOTIFY] = "notify", | |
5060 | [SERVICE_NOTIFY_RELOAD] = "notify-reload", | |
5061 | [SERVICE_IDLE] = "idle", | |
5062 | [SERVICE_EXEC] = "exec", | |
94f04347 LP |
5063 | }; |
5064 | ||
5065 | DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType); | |
5066 | ||
596e4470 | 5067 | static const char* const service_exit_type_table[_SERVICE_EXIT_TYPE_MAX] = { |
fb138166 | 5068 | [SERVICE_EXIT_MAIN] = "main", |
596e4470 HC |
5069 | [SERVICE_EXIT_CGROUP] = "cgroup", |
5070 | }; | |
5071 | ||
5072 | DEFINE_STRING_TABLE_LOOKUP(service_exit_type, ServiceExitType); | |
5073 | ||
e537352b | 5074 | static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = { |
48d83e33 ZJS |
5075 | [SERVICE_EXEC_CONDITION] = "ExecCondition", |
5076 | [SERVICE_EXEC_START_PRE] = "ExecStartPre", | |
5077 | [SERVICE_EXEC_START] = "ExecStart", | |
94f04347 | 5078 | [SERVICE_EXEC_START_POST] = "ExecStartPost", |
48d83e33 ZJS |
5079 | [SERVICE_EXEC_RELOAD] = "ExecReload", |
5080 | [SERVICE_EXEC_STOP] = "ExecStop", | |
5081 | [SERVICE_EXEC_STOP_POST] = "ExecStopPost", | |
94f04347 LP |
5082 | }; |
5083 | ||
5084 | DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand); | |
5085 | ||
b3d59367 | 5086 | static const char* const service_exec_ex_command_table[_SERVICE_EXEC_COMMAND_MAX] = { |
48d83e33 ZJS |
5087 | [SERVICE_EXEC_CONDITION] = "ExecConditionEx", |
5088 | [SERVICE_EXEC_START_PRE] = "ExecStartPreEx", | |
5089 | [SERVICE_EXEC_START] = "ExecStartEx", | |
b3d59367 | 5090 | [SERVICE_EXEC_START_POST] = "ExecStartPostEx", |
48d83e33 ZJS |
5091 | [SERVICE_EXEC_RELOAD] = "ExecReloadEx", |
5092 | [SERVICE_EXEC_STOP] = "ExecStopEx", | |
5093 | [SERVICE_EXEC_STOP_POST] = "ExecStopPostEx", | |
b3d59367 AZ |
5094 | }; |
5095 | ||
5096 | DEFINE_STRING_TABLE_LOOKUP(service_exec_ex_command, ServiceExecCommand); | |
5097 | ||
308d72dc | 5098 | static const char* const notify_state_table[_NOTIFY_STATE_MAX] = { |
48d83e33 ZJS |
5099 | [NOTIFY_UNKNOWN] = "unknown", |
5100 | [NOTIFY_READY] = "ready", | |
308d72dc | 5101 | [NOTIFY_RELOADING] = "reloading", |
48d83e33 | 5102 | [NOTIFY_STOPPING] = "stopping", |
308d72dc LP |
5103 | }; |
5104 | ||
5105 | DEFINE_STRING_TABLE_LOOKUP(notify_state, NotifyState); | |
5106 | ||
f42806df | 5107 | static const char* const service_result_table[_SERVICE_RESULT_MAX] = { |
48d83e33 ZJS |
5108 | [SERVICE_SUCCESS] = "success", |
5109 | [SERVICE_FAILURE_RESOURCES] = "resources", | |
5110 | [SERVICE_FAILURE_PROTOCOL] = "protocol", | |
5111 | [SERVICE_FAILURE_TIMEOUT] = "timeout", | |
5112 | [SERVICE_FAILURE_EXIT_CODE] = "exit-code", | |
5113 | [SERVICE_FAILURE_SIGNAL] = "signal", | |
5114 | [SERVICE_FAILURE_CORE_DUMP] = "core-dump", | |
5115 | [SERVICE_FAILURE_WATCHDOG] = "watchdog", | |
07299350 | 5116 | [SERVICE_FAILURE_START_LIMIT_HIT] = "start-limit-hit", |
48d83e33 ZJS |
5117 | [SERVICE_FAILURE_OOM_KILL] = "oom-kill", |
5118 | [SERVICE_SKIP_CONDITION] = "exec-condition", | |
f42806df LP |
5119 | }; |
5120 | ||
5121 | DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult); | |
5122 | ||
bf760801 JK |
5123 | static const char* const service_timeout_failure_mode_table[_SERVICE_TIMEOUT_FAILURE_MODE_MAX] = { |
5124 | [SERVICE_TIMEOUT_TERMINATE] = "terminate", | |
48d83e33 ZJS |
5125 | [SERVICE_TIMEOUT_ABORT] = "abort", |
5126 | [SERVICE_TIMEOUT_KILL] = "kill", | |
bf760801 JK |
5127 | }; |
5128 | ||
5129 | DEFINE_STRING_TABLE_LOOKUP(service_timeout_failure_mode, ServiceTimeoutFailureMode); | |
5130 | ||
87f0e418 | 5131 | const UnitVTable service_vtable = { |
7d17cfbc | 5132 | .object_size = sizeof(Service), |
718db961 LP |
5133 | .exec_context_offset = offsetof(Service, exec_context), |
5134 | .cgroup_context_offset = offsetof(Service, cgroup_context), | |
5135 | .kill_context_offset = offsetof(Service, kill_context), | |
613b411c | 5136 | .exec_runtime_offset = offsetof(Service, exec_runtime), |
9cc54544 | 5137 | .cgroup_runtime_offset = offsetof(Service, cgroup_runtime), |
3ef63c31 | 5138 | |
f975e971 LP |
5139 | .sections = |
5140 | "Unit\0" | |
5141 | "Service\0" | |
5142 | "Install\0", | |
4ad49000 | 5143 | .private_section = "Service", |
71645aca | 5144 | |
1d9cc876 LP |
5145 | .can_transient = true, |
5146 | .can_delegate = true, | |
c80a9a33 | 5147 | .can_fail = true, |
4d824a4e | 5148 | .can_set_managed_oom = true, |
1d9cc876 | 5149 | |
034c6ed7 LP |
5150 | .init = service_init, |
5151 | .done = service_done, | |
a16e1123 | 5152 | .load = service_load, |
a354329f | 5153 | .release_resources = service_release_resources, |
a16e1123 LP |
5154 | |
5155 | .coldplug = service_coldplug, | |
034c6ed7 | 5156 | |
5cb5a6ff LP |
5157 | .dump = service_dump, |
5158 | ||
5159 | .start = service_start, | |
5160 | .stop = service_stop, | |
5161 | .reload = service_reload, | |
5162 | ||
034c6ed7 LP |
5163 | .can_reload = service_can_reload, |
5164 | ||
4c2f5842 LP |
5165 | .clean = service_clean, |
5166 | .can_clean = service_can_clean, | |
8a0867d6 | 5167 | |
16b6af6a | 5168 | .freezer_action = unit_cgroup_freezer_action, |
d9e45bc3 | 5169 | |
a16e1123 LP |
5170 | .serialize = service_serialize, |
5171 | .deserialize_item = service_deserialize_item, | |
5172 | ||
5cb5a6ff | 5173 | .active_state = service_active_state, |
10a94420 | 5174 | .sub_state_to_string = service_sub_state_to_string, |
5cb5a6ff | 5175 | |
deb4e708 MK |
5176 | .will_restart = service_will_restart, |
5177 | ||
f2f725e5 | 5178 | .may_gc = service_may_gc, |
701cc384 | 5179 | |
034c6ed7 | 5180 | .sigchld_event = service_sigchld_event, |
2c4104f0 | 5181 | |
fdf20a31 | 5182 | .reset_failed = service_reset_failed, |
5632e374 | 5183 | |
4ad49000 | 5184 | .notify_cgroup_empty = service_notify_cgroup_empty_event, |
afcfaa69 | 5185 | .notify_cgroup_oom = service_notify_cgroup_oom_event, |
8c47c732 | 5186 | .notify_message = service_notify_message, |
3c1d1ca1 | 5187 | .notify_handoff_timestamp = service_handoff_timestamp, |
8e274523 | 5188 | |
291d565a LP |
5189 | .main_pid = service_main_pid, |
5190 | .control_pid = service_control_pid, | |
5191 | ||
05e343b7 | 5192 | .bus_name_owner_change = service_bus_name_owner_change, |
05e343b7 | 5193 | |
74c964d3 LP |
5194 | .bus_set_property = bus_service_set_property, |
5195 | .bus_commit_properties = bus_service_commit_properties, | |
4139c1b2 | 5196 | |
68db7a3b | 5197 | .get_timeout = service_get_timeout, |
f5a9d2ee | 5198 | .get_timeout_start_usec = service_get_timeout_start_usec, |
bb2c7685 | 5199 | .needs_console = service_needs_console, |
7af67e9a | 5200 | .exit_status = service_exit_status, |
5e1669ff | 5201 | .status_text = service_status_text, |
718db961 | 5202 | |
c6918296 | 5203 | .status_message_formats = { |
c6918296 | 5204 | .finished_start_job = { |
c6918296 | 5205 | [JOB_FAILED] = "Failed to start %s.", |
c6918296 MS |
5206 | }, |
5207 | .finished_stop_job = { | |
5208 | [JOB_DONE] = "Stopped %s.", | |
5209 | [JOB_FAILED] = "Stopped (with error) %s.", | |
c6918296 | 5210 | }, |
eda0cbf0 | 5211 | .finished_job = service_finished_job, |
c6918296 | 5212 | }, |
9727f242 | 5213 | |
705578c3 | 5214 | .can_start = service_can_start, |
d52b8493 | 5215 | |
b2bfd121 LP |
5216 | .notify_plymouth = true, |
5217 | ||
d52b8493 LP |
5218 | .audit_start_message_type = AUDIT_SERVICE_START, |
5219 | .audit_stop_message_type = AUDIT_SERVICE_STOP, | |
5cb5a6ff | 5220 | }; |