1 /* SPDX-License-Identifier: LGPL-2.1+ */
9 #include "sd-messages.h"
11 #include "alloc-util.h"
13 #include "bus-error.h"
14 #include "bus-kernel.h"
16 #include "dbus-service.h"
17 #include "dbus-unit.h"
21 #include "exit-status.h"
24 #include "format-util.h"
26 #include "load-dropin.h"
27 #include "load-fragment.h"
30 #include "parse-util.h"
31 #include "path-util.h"
32 #include "process-util.h"
33 #include "serialize.h"
35 #include "signal-util.h"
37 #include "stdio-util.h"
38 #include "string-table.h"
39 #include "string-util.h"
41 #include "unit-name.h"
46 static const UnitActiveState state_translation_table
[_SERVICE_STATE_MAX
] = {
47 [SERVICE_DEAD
] = UNIT_INACTIVE
,
48 [SERVICE_START_PRE
] = UNIT_ACTIVATING
,
49 [SERVICE_START
] = UNIT_ACTIVATING
,
50 [SERVICE_START_POST
] = UNIT_ACTIVATING
,
51 [SERVICE_RUNNING
] = UNIT_ACTIVE
,
52 [SERVICE_EXITED
] = UNIT_ACTIVE
,
53 [SERVICE_RELOAD
] = UNIT_RELOADING
,
54 [SERVICE_STOP
] = UNIT_DEACTIVATING
,
55 [SERVICE_STOP_WATCHDOG
] = UNIT_DEACTIVATING
,
56 [SERVICE_STOP_SIGTERM
] = UNIT_DEACTIVATING
,
57 [SERVICE_STOP_SIGKILL
] = UNIT_DEACTIVATING
,
58 [SERVICE_STOP_POST
] = UNIT_DEACTIVATING
,
59 [SERVICE_FINAL_SIGTERM
] = UNIT_DEACTIVATING
,
60 [SERVICE_FINAL_SIGKILL
] = UNIT_DEACTIVATING
,
61 [SERVICE_FAILED
] = UNIT_FAILED
,
62 [SERVICE_AUTO_RESTART
] = UNIT_ACTIVATING
65 /* For Type=idle we never want to delay any other jobs, hence we
66 * consider idle jobs active as soon as we start working on them */
67 static const UnitActiveState state_translation_table_idle
[_SERVICE_STATE_MAX
] = {
68 [SERVICE_DEAD
] = UNIT_INACTIVE
,
69 [SERVICE_START_PRE
] = UNIT_ACTIVE
,
70 [SERVICE_START
] = UNIT_ACTIVE
,
71 [SERVICE_START_POST
] = UNIT_ACTIVE
,
72 [SERVICE_RUNNING
] = UNIT_ACTIVE
,
73 [SERVICE_EXITED
] = UNIT_ACTIVE
,
74 [SERVICE_RELOAD
] = UNIT_RELOADING
,
75 [SERVICE_STOP
] = UNIT_DEACTIVATING
,
76 [SERVICE_STOP_WATCHDOG
] = UNIT_DEACTIVATING
,
77 [SERVICE_STOP_SIGTERM
] = UNIT_DEACTIVATING
,
78 [SERVICE_STOP_SIGKILL
] = UNIT_DEACTIVATING
,
79 [SERVICE_STOP_POST
] = UNIT_DEACTIVATING
,
80 [SERVICE_FINAL_SIGTERM
] = UNIT_DEACTIVATING
,
81 [SERVICE_FINAL_SIGKILL
] = UNIT_DEACTIVATING
,
82 [SERVICE_FAILED
] = UNIT_FAILED
,
83 [SERVICE_AUTO_RESTART
] = UNIT_ACTIVATING
86 static int service_dispatch_inotify_io(sd_event_source
*source
, int fd
, uint32_t events
, void *userdata
);
87 static int service_dispatch_timer(sd_event_source
*source
, usec_t usec
, void *userdata
);
88 static int service_dispatch_watchdog(sd_event_source
*source
, usec_t usec
, void *userdata
);
89 static int service_dispatch_exec_io(sd_event_source
*source
, int fd
, uint32_t events
, void *userdata
);
91 static void service_enter_signal(Service
*s
, ServiceState state
, ServiceResult f
);
92 static void service_enter_reload_by_notify(Service
*s
);
94 static void service_init(Unit
*u
) {
95 Service
*s
= SERVICE(u
);
98 assert(u
->load_state
== UNIT_STUB
);
100 s
->timeout_start_usec
= u
->manager
->default_timeout_start_usec
;
101 s
->timeout_stop_usec
= u
->manager
->default_timeout_stop_usec
;
102 s
->timeout_abort_usec
= u
->manager
->default_timeout_abort_usec
;
103 s
->timeout_abort_set
= u
->manager
->default_timeout_abort_set
;
104 s
->restart_usec
= u
->manager
->default_restart_usec
;
105 s
->runtime_max_usec
= USEC_INFINITY
;
106 s
->type
= _SERVICE_TYPE_INVALID
;
108 s
->stdin_fd
= s
->stdout_fd
= s
->stderr_fd
= -1;
109 s
->guess_main_pid
= true;
111 s
->control_command_id
= _SERVICE_EXEC_COMMAND_INVALID
;
113 s
->exec_context
.keyring_mode
= MANAGER_IS_SYSTEM(u
->manager
) ?
114 EXEC_KEYRING_PRIVATE
: EXEC_KEYRING_INHERIT
;
116 s
->watchdog_original_usec
= USEC_INFINITY
;
118 s
->oom_policy
= _OOM_POLICY_INVALID
;
121 static void service_unwatch_control_pid(Service
*s
) {
124 if (s
->control_pid
<= 0)
127 unit_unwatch_pid(UNIT(s
), s
->control_pid
);
131 static void service_unwatch_main_pid(Service
*s
) {
134 if (s
->main_pid
<= 0)
137 unit_unwatch_pid(UNIT(s
), s
->main_pid
);
141 static void service_unwatch_pid_file(Service
*s
) {
142 if (!s
->pid_file_pathspec
)
145 log_unit_debug(UNIT(s
), "Stopping watch for PID file %s", s
->pid_file_pathspec
->path
);
146 path_spec_unwatch(s
->pid_file_pathspec
);
147 path_spec_done(s
->pid_file_pathspec
);
148 s
->pid_file_pathspec
= mfree(s
->pid_file_pathspec
);
151 static int service_set_main_pid(Service
*s
, pid_t pid
) {
157 if (pid
== getpid_cached())
160 if (s
->main_pid
== pid
&& s
->main_pid_known
)
163 if (s
->main_pid
!= pid
) {
164 service_unwatch_main_pid(s
);
165 exec_status_start(&s
->main_exec_status
, pid
);
169 s
->main_pid_known
= true;
170 s
->main_pid_alien
= pid_is_my_child(pid
) == 0;
172 if (s
->main_pid_alien
)
173 log_unit_warning(UNIT(s
), "Supervising process "PID_FMT
" which is not our child. We'll most likely not notice when it exits.", pid
);
178 void service_close_socket_fd(Service
*s
) {
181 /* Undo the effect of service_set_socket_fd(). */
183 s
->socket_fd
= asynchronous_close(s
->socket_fd
);
185 if (UNIT_ISSET(s
->accept_socket
)) {
186 socket_connection_unref(SOCKET(UNIT_DEREF(s
->accept_socket
)));
187 unit_ref_unset(&s
->accept_socket
);
191 static void service_stop_watchdog(Service
*s
) {
194 s
->watchdog_event_source
= sd_event_source_unref(s
->watchdog_event_source
);
195 s
->watchdog_timestamp
= DUAL_TIMESTAMP_NULL
;
198 static usec_t
service_get_watchdog_usec(Service
*s
) {
201 if (s
->watchdog_override_enable
)
202 return s
->watchdog_override_usec
;
204 return s
->watchdog_original_usec
;
207 static void service_start_watchdog(Service
*s
) {
208 usec_t watchdog_usec
;
213 watchdog_usec
= service_get_watchdog_usec(s
);
214 if (IN_SET(watchdog_usec
, 0, USEC_INFINITY
)) {
215 service_stop_watchdog(s
);
219 if (s
->watchdog_event_source
) {
220 r
= sd_event_source_set_time(s
->watchdog_event_source
, usec_add(s
->watchdog_timestamp
.monotonic
, watchdog_usec
));
222 log_unit_warning_errno(UNIT(s
), r
, "Failed to reset watchdog timer: %m");
226 r
= sd_event_source_set_enabled(s
->watchdog_event_source
, SD_EVENT_ONESHOT
);
228 r
= sd_event_add_time(
229 UNIT(s
)->manager
->event
,
230 &s
->watchdog_event_source
,
232 usec_add(s
->watchdog_timestamp
.monotonic
, watchdog_usec
), 0,
233 service_dispatch_watchdog
, s
);
235 log_unit_warning_errno(UNIT(s
), r
, "Failed to add watchdog timer: %m");
239 (void) sd_event_source_set_description(s
->watchdog_event_source
, "service-watchdog");
241 /* Let's process everything else which might be a sign
242 * of living before we consider a service died. */
243 r
= sd_event_source_set_priority(s
->watchdog_event_source
, SD_EVENT_PRIORITY_IDLE
);
246 log_unit_warning_errno(UNIT(s
), r
, "Failed to install watchdog timer: %m");
249 static void service_extend_event_source_timeout(Service
*s
, sd_event_source
*source
, usec_t extended
) {
255 /* Extends the specified event source timer to at least the specified time, unless it is already later
261 r
= sd_event_source_get_time(source
, ¤t
);
264 (void) sd_event_source_get_description(s
->timer_event_source
, &desc
);
265 log_unit_warning_errno(UNIT(s
), r
, "Failed to retrieve timeout time for event source '%s', ignoring: %m", strna(desc
));
269 if (current
>= extended
) /* Current timeout is already longer, ignore this. */
272 r
= sd_event_source_set_time(source
, extended
);
275 (void) sd_event_source_get_description(s
->timer_event_source
, &desc
);
276 log_unit_warning_errno(UNIT(s
), r
, "Failed to set timeout time for even source '%s', ignoring %m", strna(desc
));
280 static void service_extend_timeout(Service
*s
, usec_t extend_timeout_usec
) {
285 if (IN_SET(extend_timeout_usec
, 0, USEC_INFINITY
))
288 extended
= usec_add(now(CLOCK_MONOTONIC
), extend_timeout_usec
);
290 service_extend_event_source_timeout(s
, s
->timer_event_source
, extended
);
291 service_extend_event_source_timeout(s
, s
->watchdog_event_source
, extended
);
294 static void service_reset_watchdog(Service
*s
) {
297 dual_timestamp_get(&s
->watchdog_timestamp
);
298 service_start_watchdog(s
);
301 static void service_override_watchdog_timeout(Service
*s
, usec_t watchdog_override_usec
) {
304 s
->watchdog_override_enable
= true;
305 s
->watchdog_override_usec
= watchdog_override_usec
;
306 service_reset_watchdog(s
);
308 log_unit_debug(UNIT(s
), "watchdog_usec="USEC_FMT
, s
->watchdog_usec
);
309 log_unit_debug(UNIT(s
), "watchdog_override_usec="USEC_FMT
, s
->watchdog_override_usec
);
312 static void service_fd_store_unlink(ServiceFDStore
*fs
) {
318 assert(fs
->service
->n_fd_store
> 0);
319 LIST_REMOVE(fd_store
, fs
->service
->fd_store
, fs
);
320 fs
->service
->n_fd_store
--;
323 sd_event_source_disable_unref(fs
->event_source
);
330 static void service_release_fd_store(Service
*s
) {
333 if (s
->n_keep_fd_store
> 0)
336 log_unit_debug(UNIT(s
), "Releasing all stored fds");
338 service_fd_store_unlink(s
->fd_store
);
340 assert(s
->n_fd_store
== 0);
343 static void service_release_resources(Unit
*u
) {
344 Service
*s
= SERVICE(u
);
348 if (!s
->fd_store
&& s
->stdin_fd
< 0 && s
->stdout_fd
< 0 && s
->stderr_fd
< 0)
351 log_unit_debug(u
, "Releasing resources.");
353 s
->stdin_fd
= safe_close(s
->stdin_fd
);
354 s
->stdout_fd
= safe_close(s
->stdout_fd
);
355 s
->stderr_fd
= safe_close(s
->stderr_fd
);
357 service_release_fd_store(s
);
360 static void service_done(Unit
*u
) {
361 Service
*s
= SERVICE(u
);
365 s
->pid_file
= mfree(s
->pid_file
);
366 s
->status_text
= mfree(s
->status_text
);
368 s
->exec_runtime
= exec_runtime_unref(s
->exec_runtime
, false);
369 exec_command_free_array(s
->exec_command
, _SERVICE_EXEC_COMMAND_MAX
);
370 s
->control_command
= NULL
;
371 s
->main_command
= NULL
;
373 dynamic_creds_unref(&s
->dynamic_creds
);
375 exit_status_set_free(&s
->restart_prevent_status
);
376 exit_status_set_free(&s
->restart_force_status
);
377 exit_status_set_free(&s
->success_status
);
379 /* This will leak a process, but at least no memory or any of
381 service_unwatch_main_pid(s
);
382 service_unwatch_control_pid(s
);
383 service_unwatch_pid_file(s
);
386 unit_unwatch_bus_name(u
, s
->bus_name
);
387 s
->bus_name
= mfree(s
->bus_name
);
390 s
->bus_name_owner
= mfree(s
->bus_name_owner
);
392 s
->usb_function_descriptors
= mfree(s
->usb_function_descriptors
);
393 s
->usb_function_strings
= mfree(s
->usb_function_strings
);
395 service_close_socket_fd(s
);
396 s
->peer
= socket_peer_unref(s
->peer
);
398 unit_ref_unset(&s
->accept_socket
);
400 service_stop_watchdog(s
);
402 s
->timer_event_source
= sd_event_source_unref(s
->timer_event_source
);
403 s
->exec_fd_event_source
= sd_event_source_unref(s
->exec_fd_event_source
);
405 service_release_resources(u
);
408 static int on_fd_store_io(sd_event_source
*e
, int fd
, uint32_t revents
, void *userdata
) {
409 ServiceFDStore
*fs
= userdata
;
414 /* If we get either EPOLLHUP or EPOLLERR, it's time to remove this entry from the fd store */
415 log_unit_debug(UNIT(fs
->service
),
416 "Received %s on stored fd %d (%s), closing.",
417 revents
& EPOLLERR
? "EPOLLERR" : "EPOLLHUP",
418 fs
->fd
, strna(fs
->fdname
));
419 service_fd_store_unlink(fs
);
423 static int service_add_fd_store(Service
*s
, int fd
, const char *name
) {
427 /* fd is always consumed if we return >= 0 */
432 if (s
->n_fd_store
>= s
->n_fd_store_max
)
433 return -EXFULL
; /* Our store is full.
434 * Use this errno rather than E[NM]FILE to distinguish from
435 * the case where systemd itself hits the file limit. */
437 LIST_FOREACH(fd_store
, fs
, s
->fd_store
) {
438 r
= same_fd(fs
->fd
, fd
);
443 return 0; /* fd already included */
447 fs
= new0(ServiceFDStore
, 1);
453 fs
->fdname
= strdup(name
?: "stored");
459 r
= sd_event_add_io(UNIT(s
)->manager
->event
, &fs
->event_source
, fd
, 0, on_fd_store_io
, fs
);
460 if (r
< 0 && r
!= -EPERM
) { /* EPERM indicates fds that aren't pollable, which is OK */
465 (void) sd_event_source_set_description(fs
->event_source
, "service-fd-store");
467 LIST_PREPEND(fd_store
, s
->fd_store
, fs
);
470 return 1; /* fd newly stored */
473 static int service_add_fd_store_set(Service
*s
, FDSet
*fds
, const char *name
) {
478 while (fdset_size(fds
) > 0) {
479 _cleanup_close_
int fd
= -1;
481 fd
= fdset_steal_first(fds
);
485 r
= service_add_fd_store(s
, fd
, name
);
487 return log_unit_warning_errno(UNIT(s
), r
,
488 "Cannot store more fds than FileDescriptorStoreMax=%u, closing remaining.",
491 return log_unit_error_errno(UNIT(s
), r
, "Failed to add fd to store: %m");
493 log_unit_debug(UNIT(s
), "Added fd %u (%s) to fd store.", fd
, strna(name
));
500 static void service_remove_fd_store(Service
*s
, const char *name
) {
501 ServiceFDStore
*fs
, *n
;
506 LIST_FOREACH_SAFE(fd_store
, fs
, n
, s
->fd_store
) {
507 if (!streq(fs
->fdname
, name
))
510 log_unit_debug(UNIT(s
), "Got explicit request to remove fd %i (%s), closing.", fs
->fd
, name
);
511 service_fd_store_unlink(fs
);
515 static int service_arm_timer(Service
*s
, usec_t usec
) {
520 if (s
->timer_event_source
) {
521 r
= sd_event_source_set_time(s
->timer_event_source
, usec
);
525 return sd_event_source_set_enabled(s
->timer_event_source
, SD_EVENT_ONESHOT
);
528 if (usec
== USEC_INFINITY
)
531 r
= sd_event_add_time(
532 UNIT(s
)->manager
->event
,
533 &s
->timer_event_source
,
536 service_dispatch_timer
, s
);
540 (void) sd_event_source_set_description(s
->timer_event_source
, "service-timer");
545 static int service_verify(Service
*s
) {
548 if (UNIT(s
)->load_state
!= UNIT_LOADED
)
551 if (!s
->exec_command
[SERVICE_EXEC_START
] && !s
->exec_command
[SERVICE_EXEC_STOP
]
552 && UNIT(s
)->success_action
== EMERGENCY_ACTION_NONE
) {
553 /* FailureAction= only makes sense if one of the start or stop commands is specified.
554 * SuccessAction= will be executed unconditionally if no commands are specified. Hence,
555 * either a command or SuccessAction= are required. */
557 log_unit_error(UNIT(s
), "Service has no ExecStart=, ExecStop=, or SuccessAction=. Refusing.");
561 if (s
->type
!= SERVICE_ONESHOT
&& !s
->exec_command
[SERVICE_EXEC_START
]) {
562 log_unit_error(UNIT(s
), "Service has no ExecStart= setting, which is only allowed for Type=oneshot services. Refusing.");
566 if (!s
->remain_after_exit
&& !s
->exec_command
[SERVICE_EXEC_START
] && UNIT(s
)->success_action
== EMERGENCY_ACTION_NONE
) {
567 log_unit_error(UNIT(s
), "Service has no ExecStart= and no SuccessAction= settings and does not have RemainAfterExit=yes set. Refusing.");
571 if (s
->type
!= SERVICE_ONESHOT
&& s
->exec_command
[SERVICE_EXEC_START
]->command_next
) {
572 log_unit_error(UNIT(s
), "Service has more than one ExecStart= setting, which is only allowed for Type=oneshot services. Refusing.");
576 if (s
->type
== SERVICE_ONESHOT
&& s
->restart
!= SERVICE_RESTART_NO
) {
577 log_unit_error(UNIT(s
), "Service has Restart= setting other than no, which isn't allowed for Type=oneshot services. Refusing.");
581 if (s
->type
== SERVICE_ONESHOT
&& !exit_status_set_is_empty(&s
->restart_force_status
)) {
582 log_unit_error(UNIT(s
), "Service has RestartForceStatus= set, which isn't allowed for Type=oneshot services. Refusing.");
586 if (s
->type
== SERVICE_DBUS
&& !s
->bus_name
) {
587 log_unit_error(UNIT(s
), "Service is of type D-Bus but no D-Bus service name has been specified. Refusing.");
591 if (s
->bus_name
&& s
->type
!= SERVICE_DBUS
)
592 log_unit_warning(UNIT(s
), "Service has a D-Bus service name specified, but is not of type dbus. Ignoring.");
594 if (s
->exec_context
.pam_name
&& !IN_SET(s
->kill_context
.kill_mode
, KILL_CONTROL_GROUP
, KILL_MIXED
)) {
595 log_unit_error(UNIT(s
), "Service has PAM enabled. Kill mode must be set to 'control-group' or 'mixed'. Refusing.");
599 if (s
->usb_function_descriptors
&& !s
->usb_function_strings
)
600 log_unit_warning(UNIT(s
), "Service has USBFunctionDescriptors= setting, but no USBFunctionStrings=. Ignoring.");
602 if (!s
->usb_function_descriptors
&& s
->usb_function_strings
)
603 log_unit_warning(UNIT(s
), "Service has USBFunctionStrings= setting, but no USBFunctionDescriptors=. Ignoring.");
605 if (s
->runtime_max_usec
!= USEC_INFINITY
&& s
->type
== SERVICE_ONESHOT
)
606 log_unit_warning(UNIT(s
), "MaxRuntimeSec= has no effect in combination with Type=oneshot. Ignoring.");
611 static int service_add_default_dependencies(Service
*s
) {
616 if (!UNIT(s
)->default_dependencies
)
619 /* Add a number of automatic dependencies useful for the
620 * majority of services. */
622 if (MANAGER_IS_SYSTEM(UNIT(s
)->manager
)) {
623 /* First, pull in the really early boot stuff, and
624 * require it, so that we fail if we can't acquire
627 r
= unit_add_two_dependencies_by_name(UNIT(s
), UNIT_AFTER
, UNIT_REQUIRES
, SPECIAL_SYSINIT_TARGET
, true, UNIT_DEPENDENCY_DEFAULT
);
632 /* In the --user instance there's no sysinit.target,
633 * in that case require basic.target instead. */
635 r
= unit_add_dependency_by_name(UNIT(s
), UNIT_REQUIRES
, SPECIAL_BASIC_TARGET
, true, UNIT_DEPENDENCY_DEFAULT
);
640 /* Second, if the rest of the base system is in the same
641 * transaction, order us after it, but do not pull it in or
642 * even require it. */
643 r
= unit_add_dependency_by_name(UNIT(s
), UNIT_AFTER
, SPECIAL_BASIC_TARGET
, true, UNIT_DEPENDENCY_DEFAULT
);
647 /* Third, add us in for normal shutdown. */
648 return unit_add_two_dependencies_by_name(UNIT(s
), UNIT_BEFORE
, UNIT_CONFLICTS
, SPECIAL_SHUTDOWN_TARGET
, true, UNIT_DEPENDENCY_DEFAULT
);
651 static void service_fix_output(Service
*s
) {
654 /* If nothing has been explicitly configured, patch default output in. If input is socket/tty we avoid this
655 * however, since in that case we want output to default to the same place as we read input from. */
657 if (s
->exec_context
.std_error
== EXEC_OUTPUT_INHERIT
&&
658 s
->exec_context
.std_output
== EXEC_OUTPUT_INHERIT
&&
659 s
->exec_context
.std_input
== EXEC_INPUT_NULL
)
660 s
->exec_context
.std_error
= UNIT(s
)->manager
->default_std_error
;
662 if (s
->exec_context
.std_output
== EXEC_OUTPUT_INHERIT
&&
663 s
->exec_context
.std_input
== EXEC_INPUT_NULL
)
664 s
->exec_context
.std_output
= UNIT(s
)->manager
->default_std_output
;
666 if (s
->exec_context
.std_input
== EXEC_INPUT_NULL
&&
667 s
->exec_context
.stdin_data_size
> 0)
668 s
->exec_context
.std_input
= EXEC_INPUT_DATA
;
671 static int service_setup_bus_name(Service
*s
) {
679 r
= unit_add_dependency_by_name(UNIT(s
), UNIT_REQUIRES
, SPECIAL_DBUS_SOCKET
, true, UNIT_DEPENDENCY_FILE
);
681 return log_unit_error_errno(UNIT(s
), r
, "Failed to add dependency on " SPECIAL_DBUS_SOCKET
": %m");
683 /* We always want to be ordered against dbus.socket if both are in the transaction. */
684 r
= unit_add_dependency_by_name(UNIT(s
), UNIT_AFTER
, SPECIAL_DBUS_SOCKET
, true, UNIT_DEPENDENCY_FILE
);
686 return log_unit_error_errno(UNIT(s
), r
, "Failed to add dependency on " SPECIAL_DBUS_SOCKET
": %m");
688 r
= unit_watch_bus_name(UNIT(s
), s
->bus_name
);
690 return log_unit_error_errno(UNIT(s
), r
, "Two services allocated for the same bus name %s, refusing operation.", s
->bus_name
);
692 return log_unit_error_errno(UNIT(s
), r
, "Cannot watch bus name %s: %m", s
->bus_name
);
697 static int service_add_extras(Service
*s
) {
702 if (s
->type
== _SERVICE_TYPE_INVALID
) {
703 /* Figure out a type automatically */
705 s
->type
= SERVICE_DBUS
;
706 else if (s
->exec_command
[SERVICE_EXEC_START
])
707 s
->type
= SERVICE_SIMPLE
;
709 s
->type
= SERVICE_ONESHOT
;
712 /* Oneshot services have disabled start timeout by default */
713 if (s
->type
== SERVICE_ONESHOT
&& !s
->start_timeout_defined
)
714 s
->timeout_start_usec
= USEC_INFINITY
;
716 service_fix_output(s
);
718 r
= unit_patch_contexts(UNIT(s
));
722 r
= unit_add_exec_dependencies(UNIT(s
), &s
->exec_context
);
726 r
= unit_set_default_slice(UNIT(s
));
730 /* If the service needs the notify socket, let's enable it automatically. */
731 if (s
->notify_access
== NOTIFY_NONE
&&
732 (s
->type
== SERVICE_NOTIFY
|| s
->watchdog_usec
> 0 || s
->n_fd_store_max
> 0))
733 s
->notify_access
= NOTIFY_MAIN
;
735 /* If no OOM policy was explicitly set, then default to the configure default OOM policy. Except when
736 * delegation is on, in that case it we assume the payload knows better what to do and can process
737 * things in a more focused way. */
738 if (s
->oom_policy
< 0)
739 s
->oom_policy
= s
->cgroup_context
.delegate
? OOM_CONTINUE
: UNIT(s
)->manager
->default_oom_policy
;
741 /* Let the kernel do the killing if that's requested. */
742 s
->cgroup_context
.memory_oom_group
= s
->oom_policy
== OOM_KILL
;
744 r
= service_add_default_dependencies(s
);
748 r
= service_setup_bus_name(s
);
755 static int service_load(Unit
*u
) {
756 Service
*s
= SERVICE(u
);
761 /* Load a .service file */
762 r
= unit_load_fragment(u
);
766 /* Still nothing found? Then let's give up */
767 if (u
->load_state
== UNIT_STUB
)
770 /* This is a new unit? Then let's add in some extras */
771 if (u
->load_state
== UNIT_LOADED
) {
773 /* We were able to load something, then let's add in
774 * the dropin directories. */
775 r
= unit_load_dropin(u
);
779 /* This is a new unit? Then let's add in some
781 r
= service_add_extras(s
);
786 return service_verify(s
);
789 static void service_dump(Unit
*u
, FILE *f
, const char *prefix
) {
790 char buf_restart
[FORMAT_TIMESPAN_MAX
], buf_start
[FORMAT_TIMESPAN_MAX
], buf_stop
[FORMAT_TIMESPAN_MAX
];
791 char buf_runtime
[FORMAT_TIMESPAN_MAX
], buf_watchdog
[FORMAT_TIMESPAN_MAX
], buf_abort
[FORMAT_TIMESPAN_MAX
];
792 ServiceExecCommand c
;
793 Service
*s
= SERVICE(u
);
798 prefix
= strempty(prefix
);
799 prefix2
= strjoina(prefix
, "\t");
802 "%sService State: %s\n"
804 "%sReload Result: %s\n"
805 "%sPermissionsStartOnly: %s\n"
806 "%sRootDirectoryStartOnly: %s\n"
807 "%sRemainAfterExit: %s\n"
808 "%sGuessMainPID: %s\n"
811 "%sNotifyAccess: %s\n"
812 "%sNotifyState: %s\n"
814 prefix
, service_state_to_string(s
->state
),
815 prefix
, service_result_to_string(s
->result
),
816 prefix
, service_result_to_string(s
->reload_result
),
817 prefix
, yes_no(s
->permissions_start_only
),
818 prefix
, yes_no(s
->root_directory_start_only
),
819 prefix
, yes_no(s
->remain_after_exit
),
820 prefix
, yes_no(s
->guess_main_pid
),
821 prefix
, service_type_to_string(s
->type
),
822 prefix
, service_restart_to_string(s
->restart
),
823 prefix
, notify_access_to_string(s
->notify_access
),
824 prefix
, notify_state_to_string(s
->notify_state
),
825 prefix
, oom_policy_to_string(s
->oom_policy
));
827 if (s
->control_pid
> 0)
829 "%sControl PID: "PID_FMT
"\n",
830 prefix
, s
->control_pid
);
834 "%sMain PID: "PID_FMT
"\n"
835 "%sMain PID Known: %s\n"
836 "%sMain PID Alien: %s\n",
838 prefix
, yes_no(s
->main_pid_known
),
839 prefix
, yes_no(s
->main_pid_alien
));
844 prefix
, s
->pid_file
);
849 "%sBus Name Good: %s\n",
851 prefix
, yes_no(s
->bus_name_good
));
853 if (UNIT_ISSET(s
->accept_socket
))
855 "%sAccept Socket: %s\n",
856 prefix
, UNIT_DEREF(s
->accept_socket
)->id
);
860 "%sTimeoutStartSec: %s\n"
861 "%sTimeoutStopSec: %s\n",
862 prefix
, format_timespan(buf_restart
, sizeof(buf_restart
), s
->restart_usec
, USEC_PER_SEC
),
863 prefix
, format_timespan(buf_start
, sizeof(buf_start
), s
->timeout_start_usec
, USEC_PER_SEC
),
864 prefix
, format_timespan(buf_stop
, sizeof(buf_stop
), s
->timeout_stop_usec
, USEC_PER_SEC
));
866 if (s
->timeout_abort_set
)
868 "%sTimeoutAbortSec: %s\n",
869 prefix
, format_timespan(buf_abort
, sizeof(buf_abort
), s
->timeout_abort_usec
, USEC_PER_SEC
));
872 "%sRuntimeMaxSec: %s\n"
873 "%sWatchdogSec: %s\n",
874 prefix
, format_timespan(buf_runtime
, sizeof(buf_runtime
), s
->runtime_max_usec
, USEC_PER_SEC
),
875 prefix
, format_timespan(buf_watchdog
, sizeof(buf_watchdog
), s
->watchdog_usec
, USEC_PER_SEC
));
877 kill_context_dump(&s
->kill_context
, f
, prefix
);
878 exec_context_dump(&s
->exec_context
, f
, prefix
);
880 for (c
= 0; c
< _SERVICE_EXEC_COMMAND_MAX
; c
++) {
882 if (!s
->exec_command
[c
])
885 fprintf(f
, "%s-> %s:\n",
886 prefix
, service_exec_command_to_string(c
));
888 exec_command_dump_list(s
->exec_command
[c
], f
, prefix2
);
892 fprintf(f
, "%sStatus Text: %s\n",
893 prefix
, s
->status_text
);
895 if (s
->n_fd_store_max
> 0)
897 "%sFile Descriptor Store Max: %u\n"
898 "%sFile Descriptor Store Current: %zu\n",
899 prefix
, s
->n_fd_store_max
,
900 prefix
, s
->n_fd_store
);
902 cgroup_context_dump(&s
->cgroup_context
, f
, prefix
);
905 static int service_is_suitable_main_pid(Service
*s
, pid_t pid
, int prio
) {
909 assert(pid_is_valid(pid
));
911 /* Checks whether the specified PID is suitable as main PID for this service. returns negative if not, 0 if the
912 * PID is questionnable but should be accepted if the source of configuration is trusted. > 0 if the PID is
915 if (pid
== getpid_cached() || pid
== 1) {
916 log_unit_full(UNIT(s
), prio
, 0, "New main PID "PID_FMT
" is the manager, refusing.", pid
);
920 if (pid
== s
->control_pid
) {
921 log_unit_full(UNIT(s
), prio
, 0, "New main PID "PID_FMT
" is the control process, refusing.", pid
);
925 if (!pid_is_alive(pid
)) {
926 log_unit_full(UNIT(s
), prio
, 0, "New main PID "PID_FMT
" does not exist or is a zombie.", pid
);
930 owner
= manager_get_unit_by_pid(UNIT(s
)->manager
, pid
);
931 if (owner
== UNIT(s
)) {
932 log_unit_debug(UNIT(s
), "New main PID "PID_FMT
" belongs to service, we are happy.", pid
);
933 return 1; /* Yay, it's definitely a good PID */
936 return 0; /* Hmm it's a suspicious PID, let's accept it if configuration source is trusted */
939 static int service_load_pid_file(Service
*s
, bool may_warn
) {
940 char procfs
[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)];
941 bool questionable_pid_file
= false;
942 _cleanup_free_
char *k
= NULL
;
943 _cleanup_close_
int fd
= -1;
952 prio
= may_warn
? LOG_INFO
: LOG_DEBUG
;
954 fd
= chase_symlinks(s
->pid_file
, NULL
, CHASE_OPEN
|CHASE_SAFE
, NULL
);
955 if (fd
== -ENOLINK
) {
956 log_unit_full(UNIT(s
), LOG_DEBUG
, fd
, "Potentially unsafe symlink chain, will now retry with relaxed checks: %s", s
->pid_file
);
958 questionable_pid_file
= true;
960 fd
= chase_symlinks(s
->pid_file
, NULL
, CHASE_OPEN
, NULL
);
963 return log_unit_full(UNIT(s
), prio
, fd
, "Can't open PID file %s (yet?) after %s: %m", s
->pid_file
, service_state_to_string(s
->state
));
965 /* Let's read the PID file now that we chased it down. But we need to convert the O_PATH fd chase_symlinks() returned us into a proper fd first. */
966 xsprintf(procfs
, "/proc/self/fd/%i", fd
);
967 r
= read_one_line_file(procfs
, &k
);
969 return log_unit_error_errno(UNIT(s
), r
, "Can't convert PID files %s O_PATH file descriptor to proper file descriptor: %m", s
->pid_file
);
971 r
= parse_pid(k
, &pid
);
973 return log_unit_full(UNIT(s
), prio
, r
, "Failed to parse PID from file %s: %m", s
->pid_file
);
975 if (s
->main_pid_known
&& pid
== s
->main_pid
)
978 r
= service_is_suitable_main_pid(s
, pid
, prio
);
984 if (questionable_pid_file
) {
985 log_unit_error(UNIT(s
), "Refusing to accept PID outside of service control group, acquired through unsafe symlink chain: %s", s
->pid_file
);
989 /* Hmm, it's not clear if the new main PID is safe. Let's allow this if the PID file is owned by root */
991 if (fstat(fd
, &st
) < 0)
992 return log_unit_error_errno(UNIT(s
), errno
, "Failed to fstat() PID file O_PATH fd: %m");
994 if (st
.st_uid
!= 0) {
995 log_unit_error(UNIT(s
), "New main PID "PID_FMT
" does not belong to service, and PID file is not owned by root. Refusing.", pid
);
999 log_unit_debug(UNIT(s
), "New main PID "PID_FMT
" does not belong to service, but we'll accept it since PID file is owned by root.", pid
);
1002 if (s
->main_pid_known
) {
1003 log_unit_debug(UNIT(s
), "Main PID changing: "PID_FMT
" -> "PID_FMT
, s
->main_pid
, pid
);
1005 service_unwatch_main_pid(s
);
1006 s
->main_pid_known
= false;
1008 log_unit_debug(UNIT(s
), "Main PID loaded: "PID_FMT
, pid
);
1010 r
= service_set_main_pid(s
, pid
);
1014 r
= unit_watch_pid(UNIT(s
), pid
, false);
1015 if (r
< 0) /* FIXME: we need to do something here */
1016 return log_unit_warning_errno(UNIT(s
), r
, "Failed to watch PID "PID_FMT
" for service: %m", pid
);
1021 static void service_search_main_pid(Service
*s
) {
1027 /* If we know it anyway, don't ever fallback to unreliable
1029 if (s
->main_pid_known
)
1032 if (!s
->guess_main_pid
)
1035 assert(s
->main_pid
<= 0);
1037 if (unit_search_main_pid(UNIT(s
), &pid
) < 0)
1040 log_unit_debug(UNIT(s
), "Main PID guessed: "PID_FMT
, pid
);
1041 if (service_set_main_pid(s
, pid
) < 0)
1044 r
= unit_watch_pid(UNIT(s
), pid
, false);
1046 /* FIXME: we need to do something here */
1047 log_unit_warning_errno(UNIT(s
), r
, "Failed to watch PID "PID_FMT
" from: %m", pid
);
1050 static void service_set_state(Service
*s
, ServiceState state
) {
1051 ServiceState old_state
;
1052 const UnitActiveState
*table
;
1056 if (s
->state
!= state
)
1057 bus_unit_send_pending_change_signal(UNIT(s
), false);
1059 table
= s
->type
== SERVICE_IDLE
? state_translation_table_idle
: state_translation_table
;
1061 old_state
= s
->state
;
1064 service_unwatch_pid_file(s
);
1067 SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
,
1070 SERVICE_STOP
, SERVICE_STOP_WATCHDOG
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
1071 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
,
1072 SERVICE_AUTO_RESTART
))
1073 s
->timer_event_source
= sd_event_source_unref(s
->timer_event_source
);
1076 SERVICE_START
, SERVICE_START_POST
,
1077 SERVICE_RUNNING
, SERVICE_RELOAD
,
1078 SERVICE_STOP
, SERVICE_STOP_WATCHDOG
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
1079 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
)) {
1080 service_unwatch_main_pid(s
);
1081 s
->main_command
= NULL
;
1085 SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
,
1087 SERVICE_STOP
, SERVICE_STOP_WATCHDOG
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
1088 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
)) {
1089 service_unwatch_control_pid(s
);
1090 s
->control_command
= NULL
;
1091 s
->control_command_id
= _SERVICE_EXEC_COMMAND_INVALID
;
1094 if (IN_SET(state
, SERVICE_DEAD
, SERVICE_FAILED
, SERVICE_AUTO_RESTART
)) {
1095 unit_unwatch_all_pids(UNIT(s
));
1096 unit_dequeue_rewatch_pids(UNIT(s
));
1100 SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
,
1101 SERVICE_RUNNING
, SERVICE_RELOAD
,
1102 SERVICE_STOP
, SERVICE_STOP_WATCHDOG
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
1103 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
) &&
1104 !(state
== SERVICE_DEAD
&& UNIT(s
)->job
))
1105 service_close_socket_fd(s
);
1107 if (state
!= SERVICE_START
)
1108 s
->exec_fd_event_source
= sd_event_source_unref(s
->exec_fd_event_source
);
1110 if (!IN_SET(state
, SERVICE_START_POST
, SERVICE_RUNNING
, SERVICE_RELOAD
))
1111 service_stop_watchdog(s
);
1113 /* For the inactive states unit_notify() will trim the cgroup,
1114 * but for exit we have to do that ourselves... */
1115 if (state
== SERVICE_EXITED
&& !MANAGER_IS_RELOADING(UNIT(s
)->manager
))
1116 unit_prune_cgroup(UNIT(s
));
1118 if (old_state
!= state
)
1119 log_unit_debug(UNIT(s
), "Changed %s -> %s", service_state_to_string(old_state
), service_state_to_string(state
));
1121 unit_notify(UNIT(s
), table
[old_state
], table
[state
],
1122 (s
->reload_result
== SERVICE_SUCCESS
? 0 : UNIT_NOTIFY_RELOAD_FAILURE
) |
1123 (s
->will_auto_restart
? UNIT_NOTIFY_WILL_AUTO_RESTART
: 0));
1126 static usec_t
service_coldplug_timeout(Service
*s
) {
1129 switch (s
->deserialized_state
) {
1131 case SERVICE_START_PRE
:
1133 case SERVICE_START_POST
:
1134 case SERVICE_RELOAD
:
1135 return usec_add(UNIT(s
)->state_change_timestamp
.monotonic
, s
->timeout_start_usec
);
1137 case SERVICE_RUNNING
:
1138 return usec_add(UNIT(s
)->active_enter_timestamp
.monotonic
, s
->runtime_max_usec
);
1141 case SERVICE_STOP_SIGTERM
:
1142 case SERVICE_STOP_SIGKILL
:
1143 case SERVICE_STOP_POST
:
1144 case SERVICE_FINAL_SIGTERM
:
1145 case SERVICE_FINAL_SIGKILL
:
1146 return usec_add(UNIT(s
)->state_change_timestamp
.monotonic
, s
->timeout_stop_usec
);
1148 case SERVICE_STOP_WATCHDOG
:
1149 return usec_add(UNIT(s
)->state_change_timestamp
.monotonic
, service_timeout_abort_usec(s
));
1151 case SERVICE_AUTO_RESTART
:
1152 return usec_add(UNIT(s
)->inactive_enter_timestamp
.monotonic
, s
->restart_usec
);
1155 return USEC_INFINITY
;
1159 static int service_coldplug(Unit
*u
) {
1160 Service
*s
= SERVICE(u
);
1164 assert(s
->state
== SERVICE_DEAD
);
1166 if (s
->deserialized_state
== s
->state
)
1169 r
= service_arm_timer(s
, service_coldplug_timeout(s
));
1173 if (s
->main_pid
> 0 &&
1174 pid_is_unwaited(s
->main_pid
) &&
1175 (IN_SET(s
->deserialized_state
,
1176 SERVICE_START
, SERVICE_START_POST
,
1177 SERVICE_RUNNING
, SERVICE_RELOAD
,
1178 SERVICE_STOP
, SERVICE_STOP_WATCHDOG
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
1179 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
))) {
1180 r
= unit_watch_pid(UNIT(s
), s
->main_pid
, false);
1185 if (s
->control_pid
> 0 &&
1186 pid_is_unwaited(s
->control_pid
) &&
1187 IN_SET(s
->deserialized_state
,
1188 SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
,
1190 SERVICE_STOP
, SERVICE_STOP_WATCHDOG
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
1191 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
)) {
1192 r
= unit_watch_pid(UNIT(s
), s
->control_pid
, false);
1197 if (!IN_SET(s
->deserialized_state
, SERVICE_DEAD
, SERVICE_FAILED
, SERVICE_AUTO_RESTART
)) {
1198 (void) unit_enqueue_rewatch_pids(u
);
1199 (void) unit_setup_dynamic_creds(u
);
1200 (void) unit_setup_exec_runtime(u
);
1203 if (IN_SET(s
->deserialized_state
, SERVICE_START_POST
, SERVICE_RUNNING
, SERVICE_RELOAD
))
1204 service_start_watchdog(s
);
1206 if (UNIT_ISSET(s
->accept_socket
)) {
1207 Socket
* socket
= SOCKET(UNIT_DEREF(s
->accept_socket
));
1209 if (socket
->max_connections_per_source
> 0) {
1212 /* Make a best-effort attempt at bumping the connection count */
1213 if (socket_acquire_peer(socket
, s
->socket_fd
, &peer
) > 0) {
1214 socket_peer_unref(s
->peer
);
1220 service_set_state(s
, s
->deserialized_state
);
1224 static int service_collect_fds(
1228 size_t *n_socket_fds
,
1229 size_t *n_storage_fds
) {
1231 _cleanup_strv_free_
char **rfd_names
= NULL
;
1232 _cleanup_free_
int *rfds
= NULL
;
1233 size_t rn_socket_fds
= 0, rn_storage_fds
= 0;
1239 assert(n_socket_fds
);
1240 assert(n_storage_fds
);
1242 if (s
->socket_fd
>= 0) {
1244 /* Pass the per-connection socket */
1249 rfds
[0] = s
->socket_fd
;
1251 rfd_names
= strv_new("connection");
1261 /* Pass all our configured sockets for singleton services */
1263 HASHMAP_FOREACH_KEY(v
, u
, UNIT(s
)->dependencies
[UNIT_TRIGGERED_BY
], i
) {
1264 _cleanup_free_
int *cfds
= NULL
;
1268 if (u
->type
!= UNIT_SOCKET
)
1273 cn_fds
= socket_collect_fds(sock
, &cfds
);
1281 rfds
= TAKE_PTR(cfds
);
1282 rn_socket_fds
= cn_fds
;
1286 t
= reallocarray(rfds
, rn_socket_fds
+ cn_fds
, sizeof(int));
1290 memcpy(t
+ rn_socket_fds
, cfds
, cn_fds
* sizeof(int));
1293 rn_socket_fds
+= cn_fds
;
1296 r
= strv_extend_n(&rfd_names
, socket_fdname(sock
), cn_fds
);
1302 if (s
->n_fd_store
> 0) {
1308 t
= reallocarray(rfds
, rn_socket_fds
+ s
->n_fd_store
, sizeof(int));
1314 nl
= reallocarray(rfd_names
, rn_socket_fds
+ s
->n_fd_store
+ 1, sizeof(char *));
1319 n_fds
= rn_socket_fds
;
1321 LIST_FOREACH(fd_store
, fs
, s
->fd_store
) {
1322 rfds
[n_fds
] = fs
->fd
;
1323 rfd_names
[n_fds
] = strdup(strempty(fs
->fdname
));
1324 if (!rfd_names
[n_fds
])
1331 rfd_names
[n_fds
] = NULL
;
1334 *fds
= TAKE_PTR(rfds
);
1335 *fd_names
= TAKE_PTR(rfd_names
);
1336 *n_socket_fds
= rn_socket_fds
;
1337 *n_storage_fds
= rn_storage_fds
;
1342 static int service_allocate_exec_fd_event_source(
1345 sd_event_source
**ret_event_source
) {
1347 _cleanup_(sd_event_source_unrefp
) sd_event_source
*source
= NULL
;
1352 assert(ret_event_source
);
1354 r
= sd_event_add_io(UNIT(s
)->manager
->event
, &source
, fd
, 0, service_dispatch_exec_io
, s
);
1356 return log_unit_error_errno(UNIT(s
), r
, "Failed to allocate exec_fd event source: %m");
1358 /* This is a bit lower priority than SIGCHLD, as that carries a lot more interesting failure information */
1360 r
= sd_event_source_set_priority(source
, SD_EVENT_PRIORITY_NORMAL
-3);
1362 return log_unit_error_errno(UNIT(s
), r
, "Failed to adjust priority of exec_fd event source: %m");
1364 (void) sd_event_source_set_description(source
, "service event_fd");
1366 r
= sd_event_source_set_io_fd_own(source
, true);
1368 return log_unit_error_errno(UNIT(s
), r
, "Failed to pass ownership of fd to event source: %m");
1370 *ret_event_source
= TAKE_PTR(source
);
1374 static int service_allocate_exec_fd(
1376 sd_event_source
**ret_event_source
,
1379 _cleanup_close_pair_
int p
[2] = { -1, -1 };
1383 assert(ret_event_source
);
1384 assert(ret_exec_fd
);
1386 if (pipe2(p
, O_CLOEXEC
|O_NONBLOCK
) < 0)
1387 return log_unit_error_errno(UNIT(s
), errno
, "Failed to allocate exec_fd pipe: %m");
1389 r
= service_allocate_exec_fd_event_source(s
, p
[0], ret_event_source
);
1394 *ret_exec_fd
= TAKE_FD(p
[1]);
1399 static bool service_exec_needs_notify_socket(Service
*s
, ExecFlags flags
) {
1402 /* Notifications are accepted depending on the process and
1403 * the access setting of the service:
1404 * process: \ access: NONE MAIN EXEC ALL
1405 * main no yes yes yes
1406 * control no no yes yes
1407 * other (forked) no no no yes */
1409 if (flags
& EXEC_IS_CONTROL
)
1410 /* A control process */
1411 return IN_SET(s
->notify_access
, NOTIFY_EXEC
, NOTIFY_ALL
);
1413 /* We only spawn main processes and control processes, so any
1414 * process that is not a control process is a main process */
1415 return s
->notify_access
!= NOTIFY_NONE
;
1418 static int service_spawn(
1425 _cleanup_(exec_params_clear
) ExecParameters exec_params
= {
1432 _cleanup_strv_free_
char **final_env
= NULL
, **our_env
= NULL
, **fd_names
= NULL
;
1433 _cleanup_(sd_event_source_unrefp
) sd_event_source
*exec_fd_source
= NULL
;
1434 size_t n_socket_fds
= 0, n_storage_fds
= 0, n_env
= 0;
1435 _cleanup_close_
int exec_fd
= -1;
1436 _cleanup_free_
int *fds
= NULL
;
1444 r
= unit_prepare_exec(UNIT(s
)); /* This realizes the cgroup, among other things */
1448 if (flags
& EXEC_IS_CONTROL
) {
1449 /* If this is a control process, mask the permissions/chroot application if this is requested. */
1450 if (s
->permissions_start_only
)
1451 exec_params
.flags
&= ~EXEC_APPLY_SANDBOXING
;
1452 if (s
->root_directory_start_only
)
1453 exec_params
.flags
&= ~EXEC_APPLY_CHROOT
;
1456 if ((flags
& EXEC_PASS_FDS
) ||
1457 s
->exec_context
.std_input
== EXEC_INPUT_SOCKET
||
1458 s
->exec_context
.std_output
== EXEC_OUTPUT_SOCKET
||
1459 s
->exec_context
.std_error
== EXEC_OUTPUT_SOCKET
) {
1461 r
= service_collect_fds(s
, &fds
, &fd_names
, &n_socket_fds
, &n_storage_fds
);
1465 log_unit_debug(UNIT(s
), "Passing %zu fds to service", n_socket_fds
+ n_storage_fds
);
1468 if (!FLAGS_SET(flags
, EXEC_IS_CONTROL
) && s
->type
== SERVICE_EXEC
) {
1469 assert(!s
->exec_fd_event_source
);
1471 r
= service_allocate_exec_fd(s
, &exec_fd_source
, &exec_fd
);
1476 r
= service_arm_timer(s
, usec_add(now(CLOCK_MONOTONIC
), timeout
));
1480 our_env
= new0(char*, 10);
1484 if (service_exec_needs_notify_socket(s
, flags
))
1485 if (asprintf(our_env
+ n_env
++, "NOTIFY_SOCKET=%s", UNIT(s
)->manager
->notify_socket
) < 0)
1488 if (s
->main_pid
> 0)
1489 if (asprintf(our_env
+ n_env
++, "MAINPID="PID_FMT
, s
->main_pid
) < 0)
1492 if (MANAGER_IS_USER(UNIT(s
)->manager
))
1493 if (asprintf(our_env
+ n_env
++, "MANAGERPID="PID_FMT
, getpid_cached()) < 0)
1497 if (asprintf(our_env
+ n_env
++, "PIDFILE=%s", s
->pid_file
) < 0)
1500 if (s
->socket_fd
>= 0) {
1501 union sockaddr_union sa
;
1502 socklen_t salen
= sizeof(sa
);
1504 /* If this is a per-connection service instance, let's set $REMOTE_ADDR and $REMOTE_PORT to something
1505 * useful. Note that we do this only when we are still connected at this point in time, which we might
1506 * very well not be. Hence we ignore all errors when retrieving peer information (as that might result
1507 * in ENOTCONN), and just use whate we can use. */
1509 if (getpeername(s
->socket_fd
, &sa
.sa
, &salen
) >= 0 &&
1510 IN_SET(sa
.sa
.sa_family
, AF_INET
, AF_INET6
, AF_VSOCK
)) {
1512 _cleanup_free_
char *addr
= NULL
;
1516 r
= sockaddr_pretty(&sa
.sa
, salen
, true, false, &addr
);
1520 t
= strappend("REMOTE_ADDR=", addr
);
1523 our_env
[n_env
++] = t
;
1525 r
= sockaddr_port(&sa
.sa
, &port
);
1529 if (asprintf(&t
, "REMOTE_PORT=%u", port
) < 0)
1531 our_env
[n_env
++] = t
;
1535 if (flags
& EXEC_SETENV_RESULT
) {
1536 if (asprintf(our_env
+ n_env
++, "SERVICE_RESULT=%s", service_result_to_string(s
->result
)) < 0)
1539 if (s
->main_exec_status
.pid
> 0 &&
1540 dual_timestamp_is_set(&s
->main_exec_status
.exit_timestamp
)) {
1541 if (asprintf(our_env
+ n_env
++, "EXIT_CODE=%s", sigchld_code_to_string(s
->main_exec_status
.code
)) < 0)
1544 if (s
->main_exec_status
.code
== CLD_EXITED
)
1545 r
= asprintf(our_env
+ n_env
++, "EXIT_STATUS=%i", s
->main_exec_status
.status
);
1547 r
= asprintf(our_env
+ n_env
++, "EXIT_STATUS=%s", signal_to_string(s
->main_exec_status
.status
));
1553 r
= unit_set_exec_params(UNIT(s
), &exec_params
);
1557 final_env
= strv_env_merge(2, exec_params
.environment
, our_env
, NULL
);
1561 /* System D-Bus needs nss-systemd disabled, so that we don't deadlock */
1562 SET_FLAG(exec_params
.flags
, EXEC_NSS_BYPASS_BUS
,
1563 MANAGER_IS_SYSTEM(UNIT(s
)->manager
) && unit_has_name(UNIT(s
), SPECIAL_DBUS_SERVICE
));
1565 strv_free_and_replace(exec_params
.environment
, final_env
);
1566 exec_params
.fds
= fds
;
1567 exec_params
.fd_names
= fd_names
;
1568 exec_params
.n_socket_fds
= n_socket_fds
;
1569 exec_params
.n_storage_fds
= n_storage_fds
;
1570 exec_params
.watchdog_usec
= service_get_watchdog_usec(s
);
1571 exec_params
.selinux_context_net
= s
->socket_fd_selinux_context_net
;
1572 if (s
->type
== SERVICE_IDLE
)
1573 exec_params
.idle_pipe
= UNIT(s
)->manager
->idle_pipe
;
1574 exec_params
.stdin_fd
= s
->stdin_fd
;
1575 exec_params
.stdout_fd
= s
->stdout_fd
;
1576 exec_params
.stderr_fd
= s
->stderr_fd
;
1577 exec_params
.exec_fd
= exec_fd
;
1579 r
= exec_spawn(UNIT(s
),
1589 s
->exec_fd_event_source
= TAKE_PTR(exec_fd_source
);
1590 s
->exec_fd_hot
= false;
1592 r
= unit_watch_pid(UNIT(s
), pid
, true);
1601 static int main_pid_good(Service
*s
) {
1604 /* Returns 0 if the pid is dead, > 0 if it is good, < 0 if we don't know */
1606 /* If we know the pid file, then let's just check if it is
1608 if (s
->main_pid_known
) {
1610 /* If it's an alien child let's check if it is still
1612 if (s
->main_pid_alien
&& s
->main_pid
> 0)
1613 return pid_is_alive(s
->main_pid
);
1615 /* .. otherwise assume we'll get a SIGCHLD for it,
1616 * which we really should wait for to collect exit
1617 * status and code */
1618 return s
->main_pid
> 0;
1621 /* We don't know the pid */
1625 static int control_pid_good(Service
*s
) {
1628 /* Returns 0 if the control PID is dead, > 0 if it is good. We never actually return < 0 here, but in order to
1629 * make this function as similar as possible to main_pid_good() and cgroup_good(), we pretend that < 0 also
1630 * means: we can't figure it out. */
1632 return s
->control_pid
> 0;
1635 static int cgroup_good(Service
*s
) {
1640 /* Returns 0 if the cgroup is empty or doesn't exist, > 0 if it is exists and is populated, < 0 if we can't
1643 if (!UNIT(s
)->cgroup_path
)
1646 r
= cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER
, UNIT(s
)->cgroup_path
);
1653 static bool service_shall_restart(Service
*s
) {
1656 /* Don't restart after manual stops */
1657 if (s
->forbid_restart
)
1660 /* Never restart if this is configured as special exception */
1661 if (exit_status_set_test(&s
->restart_prevent_status
, s
->main_exec_status
.code
, s
->main_exec_status
.status
))
1664 /* Restart if the exit code/status are configured as restart triggers */
1665 if (exit_status_set_test(&s
->restart_force_status
, s
->main_exec_status
.code
, s
->main_exec_status
.status
))
1668 switch (s
->restart
) {
1670 case SERVICE_RESTART_NO
:
1673 case SERVICE_RESTART_ALWAYS
:
1676 case SERVICE_RESTART_ON_SUCCESS
:
1677 return s
->result
== SERVICE_SUCCESS
;
1679 case SERVICE_RESTART_ON_FAILURE
:
1680 return s
->result
!= SERVICE_SUCCESS
;
1682 case SERVICE_RESTART_ON_ABNORMAL
:
1683 return !IN_SET(s
->result
, SERVICE_SUCCESS
, SERVICE_FAILURE_EXIT_CODE
);
1685 case SERVICE_RESTART_ON_WATCHDOG
:
1686 return s
->result
== SERVICE_FAILURE_WATCHDOG
;
1688 case SERVICE_RESTART_ON_ABORT
:
1689 return IN_SET(s
->result
, SERVICE_FAILURE_SIGNAL
, SERVICE_FAILURE_CORE_DUMP
);
1692 assert_not_reached("unknown restart setting");
1696 static bool service_will_restart(Unit
*u
) {
1697 Service
*s
= SERVICE(u
);
1701 if (s
->will_auto_restart
)
1703 if (s
->state
== SERVICE_AUTO_RESTART
)
1707 if (UNIT(s
)->job
->type
== JOB_START
)
1713 static void service_enter_dead(Service
*s
, ServiceResult f
, bool allow_restart
) {
1718 /* If there's a stop job queued before we enter the DEAD state, we shouldn't act on Restart=, in order to not
1719 * undo what has already been enqueued. */
1720 if (unit_stop_pending(UNIT(s
)))
1721 allow_restart
= false;
1723 if (s
->result
== SERVICE_SUCCESS
)
1726 unit_log_result(UNIT(s
), s
->result
== SERVICE_SUCCESS
, service_result_to_string(s
->result
));
1728 if (allow_restart
&& service_shall_restart(s
))
1729 s
->will_auto_restart
= true;
1731 /* Make sure service_release_resources() doesn't destroy our FD store, while we are changing through
1732 * SERVICE_FAILED/SERVICE_DEAD before entering into SERVICE_AUTO_RESTART. */
1733 s
->n_keep_fd_store
++;
1735 service_set_state(s
, s
->result
!= SERVICE_SUCCESS
? SERVICE_FAILED
: SERVICE_DEAD
);
1737 if (s
->will_auto_restart
) {
1738 s
->will_auto_restart
= false;
1740 r
= service_arm_timer(s
, usec_add(now(CLOCK_MONOTONIC
), s
->restart_usec
));
1742 s
->n_keep_fd_store
--;
1746 service_set_state(s
, SERVICE_AUTO_RESTART
);
1748 /* If we shan't restart, then flush out the restart counter. But don't do that immediately, so that the
1749 * user can still introspect the counter. Do so on the next start. */
1750 s
->flush_n_restarts
= true;
1752 /* The new state is in effect, let's decrease the fd store ref counter again. Let's also re-add us to the GC
1753 * queue, so that the fd store is possibly gc'ed again */
1754 s
->n_keep_fd_store
--;
1755 unit_add_to_gc_queue(UNIT(s
));
1757 /* The next restart might not be a manual stop, hence reset the flag indicating manual stops */
1758 s
->forbid_restart
= false;
1760 /* We want fresh tmpdirs in case service is started again immediately */
1761 s
->exec_runtime
= exec_runtime_unref(s
->exec_runtime
, true);
1763 if (s
->exec_context
.runtime_directory_preserve_mode
== EXEC_PRESERVE_NO
||
1764 (s
->exec_context
.runtime_directory_preserve_mode
== EXEC_PRESERVE_RESTART
&& !service_will_restart(UNIT(s
))))
1765 /* Also, remove the runtime directory */
1766 exec_context_destroy_runtime_directory(&s
->exec_context
, UNIT(s
)->manager
->prefix
[EXEC_DIRECTORY_RUNTIME
]);
1768 /* Get rid of the IPC bits of the user */
1769 unit_unref_uid_gid(UNIT(s
), true);
1771 /* Release the user, and destroy it if we are the only remaining owner */
1772 dynamic_creds_destroy(&s
->dynamic_creds
);
1774 /* Try to delete the pid file. At this point it will be
1775 * out-of-date, and some software might be confused by it, so
1776 * let's remove it. */
1778 (void) unlink(s
->pid_file
);
1780 /* Reset TTY ownership if necessary */
1781 exec_context_revert_tty(&s
->exec_context
);
1786 log_unit_warning_errno(UNIT(s
), r
, "Failed to run install restart timer: %m");
1787 service_enter_dead(s
, SERVICE_FAILURE_RESOURCES
, false);
1790 static void service_enter_stop_post(Service
*s
, ServiceResult f
) {
1794 if (s
->result
== SERVICE_SUCCESS
)
1797 service_unwatch_control_pid(s
);
1798 (void) unit_enqueue_rewatch_pids(UNIT(s
));
1800 s
->control_command
= s
->exec_command
[SERVICE_EXEC_STOP_POST
];
1801 if (s
->control_command
) {
1802 s
->control_command_id
= SERVICE_EXEC_STOP_POST
;
1804 r
= service_spawn(s
,
1806 s
->timeout_stop_usec
,
1807 EXEC_APPLY_SANDBOXING
|EXEC_APPLY_CHROOT
|EXEC_APPLY_TTY_STDIN
|EXEC_IS_CONTROL
|EXEC_SETENV_RESULT
|EXEC_CONTROL_CGROUP
,
1812 service_set_state(s
, SERVICE_STOP_POST
);
1814 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, SERVICE_SUCCESS
);
1819 log_unit_warning_errno(UNIT(s
), r
, "Failed to run 'stop-post' task: %m");
1820 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
1823 static int state_to_kill_operation(ServiceState state
) {
1826 case SERVICE_STOP_WATCHDOG
:
1827 return KILL_WATCHDOG
;
1829 case SERVICE_STOP_SIGTERM
:
1830 case SERVICE_FINAL_SIGTERM
:
1831 return KILL_TERMINATE
;
1833 case SERVICE_STOP_SIGKILL
:
1834 case SERVICE_FINAL_SIGKILL
:
1838 return _KILL_OPERATION_INVALID
;
1842 static void service_enter_signal(Service
*s
, ServiceState state
, ServiceResult f
) {
1847 if (s
->result
== SERVICE_SUCCESS
)
1850 /* Before sending any signal, make sure we track all members of this cgroup */
1851 (void) unit_watch_all_pids(UNIT(s
));
1853 /* Also, enqueue a job that we recheck all our PIDs a bit later, given that it's likely some processes have
1855 (void) unit_enqueue_rewatch_pids(UNIT(s
));
1857 r
= unit_kill_context(
1860 state_to_kill_operation(state
),
1868 r
= service_arm_timer(s
, usec_add(now(CLOCK_MONOTONIC
),
1869 state
== SERVICE_STOP_WATCHDOG
? service_timeout_abort_usec(s
) : s
->timeout_stop_usec
));
1873 service_set_state(s
, state
);
1874 } else if (IN_SET(state
, SERVICE_STOP_WATCHDOG
, SERVICE_STOP_SIGTERM
) && s
->kill_context
.send_sigkill
)
1875 service_enter_signal(s
, SERVICE_STOP_SIGKILL
, SERVICE_SUCCESS
);
1876 else if (IN_SET(state
, SERVICE_STOP_WATCHDOG
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
))
1877 service_enter_stop_post(s
, SERVICE_SUCCESS
);
1878 else if (state
== SERVICE_FINAL_SIGTERM
&& s
->kill_context
.send_sigkill
)
1879 service_enter_signal(s
, SERVICE_FINAL_SIGKILL
, SERVICE_SUCCESS
);
1881 service_enter_dead(s
, SERVICE_SUCCESS
, true);
1886 log_unit_warning_errno(UNIT(s
), r
, "Failed to kill processes: %m");
1888 if (IN_SET(state
, SERVICE_STOP_WATCHDOG
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
))
1889 service_enter_stop_post(s
, SERVICE_FAILURE_RESOURCES
);
1891 service_enter_dead(s
, SERVICE_FAILURE_RESOURCES
, true);
1894 static void service_enter_stop_by_notify(Service
*s
) {
1897 (void) unit_enqueue_rewatch_pids(UNIT(s
));
1899 service_arm_timer(s
, usec_add(now(CLOCK_MONOTONIC
), s
->timeout_stop_usec
));
1901 /* The service told us it's stopping, so it's as if we SIGTERM'd it. */
1902 service_set_state(s
, SERVICE_STOP_SIGTERM
);
1905 static void service_enter_stop(Service
*s
, ServiceResult f
) {
1910 if (s
->result
== SERVICE_SUCCESS
)
1913 service_unwatch_control_pid(s
);
1914 (void) unit_enqueue_rewatch_pids(UNIT(s
));
1916 s
->control_command
= s
->exec_command
[SERVICE_EXEC_STOP
];
1917 if (s
->control_command
) {
1918 s
->control_command_id
= SERVICE_EXEC_STOP
;
1920 r
= service_spawn(s
,
1922 s
->timeout_stop_usec
,
1923 EXEC_APPLY_SANDBOXING
|EXEC_APPLY_CHROOT
|EXEC_IS_CONTROL
|EXEC_SETENV_RESULT
|EXEC_CONTROL_CGROUP
,
1928 service_set_state(s
, SERVICE_STOP
);
1930 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_SUCCESS
);
1935 log_unit_warning_errno(UNIT(s
), r
, "Failed to run 'stop' task: %m");
1936 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
1939 static bool service_good(Service
*s
) {
1943 if (s
->type
== SERVICE_DBUS
&& !s
->bus_name_good
)
1946 main_pid_ok
= main_pid_good(s
);
1947 if (main_pid_ok
> 0) /* It's alive */
1949 if (main_pid_ok
== 0) /* It's dead */
1952 /* OK, we don't know anything about the main PID, maybe
1953 * because there is none. Let's check the control group
1956 return cgroup_good(s
) != 0;
1959 static void service_enter_running(Service
*s
, ServiceResult f
) {
1962 if (s
->result
== SERVICE_SUCCESS
)
1965 service_unwatch_control_pid(s
);
1967 if (s
->result
!= SERVICE_SUCCESS
)
1968 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, f
);
1969 else if (service_good(s
)) {
1971 /* If there are any queued up sd_notify() notifications, process them now */
1972 if (s
->notify_state
== NOTIFY_RELOADING
)
1973 service_enter_reload_by_notify(s
);
1974 else if (s
->notify_state
== NOTIFY_STOPPING
)
1975 service_enter_stop_by_notify(s
);
1977 service_set_state(s
, SERVICE_RUNNING
);
1978 service_arm_timer(s
, usec_add(UNIT(s
)->active_enter_timestamp
.monotonic
, s
->runtime_max_usec
));
1981 } else if (s
->remain_after_exit
)
1982 service_set_state(s
, SERVICE_EXITED
);
1984 service_enter_stop(s
, SERVICE_SUCCESS
);
1987 static void service_enter_start_post(Service
*s
) {
1991 service_unwatch_control_pid(s
);
1992 service_reset_watchdog(s
);
1994 s
->control_command
= s
->exec_command
[SERVICE_EXEC_START_POST
];
1995 if (s
->control_command
) {
1996 s
->control_command_id
= SERVICE_EXEC_START_POST
;
1998 r
= service_spawn(s
,
2000 s
->timeout_start_usec
,
2001 EXEC_APPLY_SANDBOXING
|EXEC_APPLY_CHROOT
|EXEC_IS_CONTROL
|EXEC_CONTROL_CGROUP
,
2006 service_set_state(s
, SERVICE_START_POST
);
2008 service_enter_running(s
, SERVICE_SUCCESS
);
2013 log_unit_warning_errno(UNIT(s
), r
, "Failed to run 'start-post' task: %m");
2014 service_enter_stop(s
, SERVICE_FAILURE_RESOURCES
);
2017 static void service_kill_control_process(Service
*s
) {
2022 if (s
->control_pid
<= 0)
2025 r
= kill_and_sigcont(s
->control_pid
, SIGKILL
);
2027 _cleanup_free_
char *comm
= NULL
;
2029 (void) get_process_comm(s
->control_pid
, &comm
);
2031 log_unit_debug_errno(UNIT(s
), r
, "Failed to kill control process " PID_FMT
" (%s), ignoring: %m",
2032 s
->control_pid
, strna(comm
));
2036 static int service_adverse_to_leftover_processes(Service
*s
) {
2039 /* KillMode=mixed and control group are used to indicate that all process should be killed off.
2040 * SendSIGKILL is used for services that require a clean shutdown. These are typically database
2041 * service where a SigKilled process would result in a lengthy recovery and who's shutdown or
2042 * startup time is quite variable (so Timeout settings aren't of use).
2044 * Here we take these two factors and refuse to start a service if there are existing processes
2045 * within a control group. Databases, while generally having some protection against multiple
2046 * instances running, lets not stress the rigor of these. Also ExecStartPre parts of the service
2047 * aren't as rigoriously written to protect aganst against multiple use. */
2048 if (unit_warn_leftover_processes(UNIT(s
)) &&
2049 IN_SET(s
->kill_context
.kill_mode
, KILL_MIXED
, KILL_CONTROL_GROUP
) &&
2050 !s
->kill_context
.send_sigkill
)
2051 return log_unit_error_errno(UNIT(s
), SYNTHETIC_ERRNO(EBUSY
),
2052 "Will not start SendSIGKILL=no service of type KillMode=control-group or mixed while processes exist");
2057 static void service_enter_start(Service
*s
) {
2065 service_unwatch_control_pid(s
);
2066 service_unwatch_main_pid(s
);
2068 r
= service_adverse_to_leftover_processes(s
);
2072 if (s
->type
== SERVICE_FORKING
) {
2073 s
->control_command_id
= SERVICE_EXEC_START
;
2074 c
= s
->control_command
= s
->exec_command
[SERVICE_EXEC_START
];
2076 s
->main_command
= NULL
;
2078 s
->control_command_id
= _SERVICE_EXEC_COMMAND_INVALID
;
2079 s
->control_command
= NULL
;
2081 c
= s
->main_command
= s
->exec_command
[SERVICE_EXEC_START
];
2085 if (s
->type
!= SERVICE_ONESHOT
) {
2086 /* There's no command line configured for the main command? Hmm, that is strange. This can only
2087 * happen if the configuration changes at runtime. In this case, let's enter a failure
2089 log_unit_error(UNIT(s
), "There's no 'start' task anymore we could start.");
2094 /* We force a fake state transition here. Otherwise, the unit would go directly from
2095 * SERVICE_DEAD to SERVICE_DEAD without SERVICE_ACTIVATING or SERVICE_ACTIVE
2096 * in between. This way we can later trigger actions that depend on the state
2097 * transition, including SuccessAction=. */
2098 service_set_state(s
, SERVICE_START
);
2100 service_enter_start_post(s
);
2104 if (IN_SET(s
->type
, SERVICE_SIMPLE
, SERVICE_IDLE
))
2105 /* For simple + idle this is the main process. We don't apply any timeout here, but
2106 * service_enter_running() will later apply the .runtime_max_usec timeout. */
2107 timeout
= USEC_INFINITY
;
2109 timeout
= s
->timeout_start_usec
;
2111 r
= service_spawn(s
,
2114 EXEC_PASS_FDS
|EXEC_APPLY_SANDBOXING
|EXEC_APPLY_CHROOT
|EXEC_APPLY_TTY_STDIN
|EXEC_SET_WATCHDOG
,
2119 if (IN_SET(s
->type
, SERVICE_SIMPLE
, SERVICE_IDLE
)) {
2120 /* For simple services we immediately start
2121 * the START_POST binaries. */
2123 service_set_main_pid(s
, pid
);
2124 service_enter_start_post(s
);
2126 } else if (s
->type
== SERVICE_FORKING
) {
2128 /* For forking services we wait until the start
2129 * process exited. */
2131 s
->control_pid
= pid
;
2132 service_set_state(s
, SERVICE_START
);
2134 } else if (IN_SET(s
->type
, SERVICE_ONESHOT
, SERVICE_DBUS
, SERVICE_NOTIFY
, SERVICE_EXEC
)) {
2136 /* For oneshot services we wait until the start process exited, too, but it is our main process. */
2138 /* For D-Bus services we know the main pid right away, but wait for the bus name to appear on the
2139 * bus. 'notify' and 'exec' services are similar. */
2141 service_set_main_pid(s
, pid
);
2142 service_set_state(s
, SERVICE_START
);
2144 assert_not_reached("Unknown service type");
2149 log_unit_warning_errno(UNIT(s
), r
, "Failed to run 'start' task: %m");
2150 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
2153 static void service_enter_start_pre(Service
*s
) {
2158 service_unwatch_control_pid(s
);
2160 s
->control_command
= s
->exec_command
[SERVICE_EXEC_START_PRE
];
2161 if (s
->control_command
) {
2163 r
= service_adverse_to_leftover_processes(s
);
2167 s
->control_command_id
= SERVICE_EXEC_START_PRE
;
2169 r
= service_spawn(s
,
2171 s
->timeout_start_usec
,
2172 EXEC_APPLY_SANDBOXING
|EXEC_APPLY_CHROOT
|EXEC_IS_CONTROL
|EXEC_APPLY_TTY_STDIN
,
2177 service_set_state(s
, SERVICE_START_PRE
);
2179 service_enter_start(s
);
2184 log_unit_warning_errno(UNIT(s
), r
, "Failed to run 'start-pre' task: %m");
2185 service_enter_dead(s
, SERVICE_FAILURE_RESOURCES
, true);
2188 static void service_enter_restart(Service
*s
) {
2189 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
2194 if (UNIT(s
)->job
&& UNIT(s
)->job
->type
== JOB_STOP
) {
2195 /* Don't restart things if we are going down anyway */
2196 log_unit_info(UNIT(s
), "Stop job pending for unit, delaying automatic restart.");
2198 r
= service_arm_timer(s
, usec_add(now(CLOCK_MONOTONIC
), s
->restart_usec
));
2205 /* Any units that are bound to this service must also be
2206 * restarted. We use JOB_RESTART (instead of the more obvious
2207 * JOB_START) here so that those dependency jobs will be added
2209 r
= manager_add_job(UNIT(s
)->manager
, JOB_RESTART
, UNIT(s
), JOB_REPLACE
, NULL
, &error
, NULL
);
2213 /* Count the jobs we enqueue for restarting. This counter is maintained as long as the unit isn't fully
2214 * stopped, i.e. as long as it remains up or remains in auto-start states. The use can reset the counter
2215 * explicitly however via the usual "systemctl reset-failure" logic. */
2217 s
->flush_n_restarts
= false;
2219 log_struct(LOG_INFO
,
2220 "MESSAGE_ID=" SD_MESSAGE_UNIT_RESTART_SCHEDULED_STR
,
2221 LOG_UNIT_ID(UNIT(s
)),
2222 LOG_UNIT_INVOCATION_ID(UNIT(s
)),
2223 LOG_UNIT_MESSAGE(UNIT(s
), "Scheduled restart job, restart counter is at %u.", s
->n_restarts
),
2224 "N_RESTARTS=%u", s
->n_restarts
);
2226 /* Notify clients about changed restart counter */
2227 unit_add_to_dbus_queue(UNIT(s
));
2229 /* Note that we stay in the SERVICE_AUTO_RESTART state here,
2230 * it will be canceled as part of the service_stop() call that
2231 * is executed as part of JOB_RESTART. */
2236 log_unit_warning(UNIT(s
), "Failed to schedule restart job: %s", bus_error_message(&error
, -r
));
2237 service_enter_dead(s
, SERVICE_FAILURE_RESOURCES
, false);
2240 static void service_enter_reload_by_notify(Service
*s
) {
2241 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
2246 service_arm_timer(s
, usec_add(now(CLOCK_MONOTONIC
), s
->timeout_start_usec
));
2247 service_set_state(s
, SERVICE_RELOAD
);
2249 /* service_enter_reload_by_notify is never called during a reload, thus no loops are possible. */
2250 r
= manager_propagate_reload(UNIT(s
)->manager
, UNIT(s
), JOB_FAIL
, &error
);
2252 log_unit_warning(UNIT(s
), "Failed to schedule propagation of reload: %s", bus_error_message(&error
, -r
));
2255 static void service_enter_reload(Service
*s
) {
2260 service_unwatch_control_pid(s
);
2261 s
->reload_result
= SERVICE_SUCCESS
;
2263 s
->control_command
= s
->exec_command
[SERVICE_EXEC_RELOAD
];
2264 if (s
->control_command
) {
2265 s
->control_command_id
= SERVICE_EXEC_RELOAD
;
2267 r
= service_spawn(s
,
2269 s
->timeout_start_usec
,
2270 EXEC_APPLY_SANDBOXING
|EXEC_APPLY_CHROOT
|EXEC_IS_CONTROL
|EXEC_CONTROL_CGROUP
,
2275 service_set_state(s
, SERVICE_RELOAD
);
2277 service_enter_running(s
, SERVICE_SUCCESS
);
2282 log_unit_warning_errno(UNIT(s
), r
, "Failed to run 'reload' task: %m");
2283 s
->reload_result
= SERVICE_FAILURE_RESOURCES
;
2284 service_enter_running(s
, SERVICE_SUCCESS
);
2287 static void service_run_next_control(Service
*s
) {
2292 assert(s
->control_command
);
2293 assert(s
->control_command
->command_next
);
2295 assert(s
->control_command_id
!= SERVICE_EXEC_START
);
2297 s
->control_command
= s
->control_command
->command_next
;
2298 service_unwatch_control_pid(s
);
2300 if (IN_SET(s
->state
, SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
, SERVICE_RUNNING
, SERVICE_RELOAD
))
2301 timeout
= s
->timeout_start_usec
;
2303 timeout
= s
->timeout_stop_usec
;
2305 r
= service_spawn(s
,
2308 EXEC_APPLY_SANDBOXING
|EXEC_APPLY_CHROOT
|EXEC_IS_CONTROL
|
2309 (IN_SET(s
->control_command_id
, SERVICE_EXEC_START_PRE
, SERVICE_EXEC_STOP_POST
) ? EXEC_APPLY_TTY_STDIN
: 0)|
2310 (IN_SET(s
->control_command_id
, SERVICE_EXEC_STOP
, SERVICE_EXEC_STOP_POST
) ? EXEC_SETENV_RESULT
: 0)|
2311 (IN_SET(s
->control_command_id
, SERVICE_EXEC_START_POST
, SERVICE_EXEC_RELOAD
, SERVICE_EXEC_STOP
, SERVICE_EXEC_STOP_POST
) ? EXEC_CONTROL_CGROUP
: 0),
2319 log_unit_warning_errno(UNIT(s
), r
, "Failed to run next control task: %m");
2321 if (IN_SET(s
->state
, SERVICE_START_PRE
, SERVICE_START_POST
, SERVICE_STOP
))
2322 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
2323 else if (s
->state
== SERVICE_STOP_POST
)
2324 service_enter_dead(s
, SERVICE_FAILURE_RESOURCES
, true);
2325 else if (s
->state
== SERVICE_RELOAD
) {
2326 s
->reload_result
= SERVICE_FAILURE_RESOURCES
;
2327 service_enter_running(s
, SERVICE_SUCCESS
);
2329 service_enter_stop(s
, SERVICE_FAILURE_RESOURCES
);
2332 static void service_run_next_main(Service
*s
) {
2337 assert(s
->main_command
);
2338 assert(s
->main_command
->command_next
);
2339 assert(s
->type
== SERVICE_ONESHOT
);
2341 s
->main_command
= s
->main_command
->command_next
;
2342 service_unwatch_main_pid(s
);
2344 r
= service_spawn(s
,
2346 s
->timeout_start_usec
,
2347 EXEC_PASS_FDS
|EXEC_APPLY_SANDBOXING
|EXEC_APPLY_CHROOT
|EXEC_APPLY_TTY_STDIN
|EXEC_SET_WATCHDOG
,
2352 service_set_main_pid(s
, pid
);
2357 log_unit_warning_errno(UNIT(s
), r
, "Failed to run next main task: %m");
2358 service_enter_stop(s
, SERVICE_FAILURE_RESOURCES
);
2361 static int service_start(Unit
*u
) {
2362 Service
*s
= SERVICE(u
);
2367 /* We cannot fulfill this request right now, try again later
2369 if (IN_SET(s
->state
,
2370 SERVICE_STOP
, SERVICE_STOP_WATCHDOG
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
2371 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
))
2374 /* Already on it! */
2375 if (IN_SET(s
->state
, SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
))
2378 /* A service that will be restarted must be stopped first to
2379 * trigger BindsTo and/or OnFailure dependencies. If a user
2380 * does not want to wait for the holdoff time to elapse, the
2381 * service should be manually restarted, not started. We
2382 * simply return EAGAIN here, so that any start jobs stay
2383 * queued, and assume that the auto restart timer will
2384 * eventually trigger the restart. */
2385 if (s
->state
== SERVICE_AUTO_RESTART
)
2388 assert(IN_SET(s
->state
, SERVICE_DEAD
, SERVICE_FAILED
));
2390 /* Make sure we don't enter a busy loop of some kind. */
2391 r
= unit_test_start_limit(u
);
2393 service_enter_dead(s
, SERVICE_FAILURE_START_LIMIT_HIT
, false);
2397 r
= unit_acquire_invocation_id(u
);
2401 s
->result
= SERVICE_SUCCESS
;
2402 s
->reload_result
= SERVICE_SUCCESS
;
2403 s
->main_pid_known
= false;
2404 s
->main_pid_alien
= false;
2405 s
->forbid_restart
= false;
2407 s
->status_text
= mfree(s
->status_text
);
2408 s
->status_errno
= 0;
2410 s
->notify_state
= NOTIFY_UNKNOWN
;
2412 s
->watchdog_original_usec
= s
->watchdog_usec
;
2413 s
->watchdog_override_enable
= false;
2414 s
->watchdog_override_usec
= USEC_INFINITY
;
2416 exec_command_reset_status_list_array(s
->exec_command
, _SERVICE_EXEC_COMMAND_MAX
);
2417 exec_status_reset(&s
->main_exec_status
);
2419 /* This is not an automatic restart? Flush the restart counter then */
2420 if (s
->flush_n_restarts
) {
2422 s
->flush_n_restarts
= false;
2425 u
->reset_accounting
= true;
2427 service_enter_start_pre(s
);
2431 static int service_stop(Unit
*u
) {
2432 Service
*s
= SERVICE(u
);
2436 /* Don't create restart jobs from manual stops. */
2437 s
->forbid_restart
= true;
2440 if (IN_SET(s
->state
,
2441 SERVICE_STOP
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
2442 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
))
2445 /* A restart will be scheduled or is in progress. */
2446 if (s
->state
== SERVICE_AUTO_RESTART
) {
2447 service_set_state(s
, SERVICE_DEAD
);
2451 /* If there's already something running we go directly into
2453 if (IN_SET(s
->state
, SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
, SERVICE_RELOAD
, SERVICE_STOP_WATCHDOG
)) {
2454 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_SUCCESS
);
2458 assert(IN_SET(s
->state
, SERVICE_RUNNING
, SERVICE_EXITED
));
2460 service_enter_stop(s
, SERVICE_SUCCESS
);
2464 static int service_reload(Unit
*u
) {
2465 Service
*s
= SERVICE(u
);
2469 assert(IN_SET(s
->state
, SERVICE_RUNNING
, SERVICE_EXITED
));
2471 service_enter_reload(s
);
2475 _pure_
static bool service_can_reload(Unit
*u
) {
2476 Service
*s
= SERVICE(u
);
2480 return !!s
->exec_command
[SERVICE_EXEC_RELOAD
];
2483 static unsigned service_exec_command_index(Unit
*u
, ServiceExecCommand id
, ExecCommand
*current
) {
2484 Service
*s
= SERVICE(u
);
2486 ExecCommand
*first
, *c
;
2490 first
= s
->exec_command
[id
];
2492 /* Figure out where we are in the list by walking back to the beginning */
2493 for (c
= current
; c
!= first
; c
= c
->command_prev
)
2499 static int service_serialize_exec_command(Unit
*u
, FILE *f
, ExecCommand
*command
) {
2500 _cleanup_free_
char *args
= NULL
, *p
= NULL
;
2501 size_t allocated
= 0, length
= 0;
2502 Service
*s
= SERVICE(u
);
2503 const char *type
, *key
;
2504 ServiceExecCommand id
;
2514 if (command
== s
->control_command
) {
2516 id
= s
->control_command_id
;
2519 id
= SERVICE_EXEC_START
;
2522 idx
= service_exec_command_index(u
, id
, command
);
2524 STRV_FOREACH(arg
, command
->argv
) {
2525 _cleanup_free_
char *e
= NULL
;
2533 if (!GREEDY_REALLOC(args
, allocated
, length
+ 1 + n
+ 1))
2537 args
[length
++] = ' ';
2539 memcpy(args
+ length
, e
, n
);
2543 if (!GREEDY_REALLOC(args
, allocated
, length
+ 1))
2548 p
= cescape(command
->path
);
2552 key
= strjoina(type
, "-command");
2553 return serialize_item_format(f
, key
, "%s %u %s %s", service_exec_command_to_string(id
), idx
, p
, args
);
2556 static int service_serialize(Unit
*u
, FILE *f
, FDSet
*fds
) {
2557 Service
*s
= SERVICE(u
);
2565 (void) serialize_item(f
, "state", service_state_to_string(s
->state
));
2566 (void) serialize_item(f
, "result", service_result_to_string(s
->result
));
2567 (void) serialize_item(f
, "reload-result", service_result_to_string(s
->reload_result
));
2569 if (s
->control_pid
> 0)
2570 (void) serialize_item_format(f
, "control-pid", PID_FMT
, s
->control_pid
);
2572 if (s
->main_pid_known
&& s
->main_pid
> 0)
2573 (void) serialize_item_format(f
, "main-pid", PID_FMT
, s
->main_pid
);
2575 (void) serialize_bool(f
, "main-pid-known", s
->main_pid_known
);
2576 (void) serialize_bool(f
, "bus-name-good", s
->bus_name_good
);
2577 (void) serialize_bool(f
, "bus-name-owner", s
->bus_name_owner
);
2579 (void) serialize_item_format(f
, "n-restarts", "%u", s
->n_restarts
);
2580 (void) serialize_bool(f
, "flush-n-restarts", s
->flush_n_restarts
);
2582 r
= serialize_item_escaped(f
, "status-text", s
->status_text
);
2586 service_serialize_exec_command(u
, f
, s
->control_command
);
2587 service_serialize_exec_command(u
, f
, s
->main_command
);
2589 r
= serialize_fd(f
, fds
, "stdin-fd", s
->stdin_fd
);
2592 r
= serialize_fd(f
, fds
, "stdout-fd", s
->stdout_fd
);
2595 r
= serialize_fd(f
, fds
, "stderr-fd", s
->stderr_fd
);
2599 if (s
->exec_fd_event_source
) {
2600 r
= serialize_fd(f
, fds
, "exec-fd", sd_event_source_get_io_fd(s
->exec_fd_event_source
));
2604 (void) serialize_bool(f
, "exec-fd-hot", s
->exec_fd_hot
);
2607 if (UNIT_ISSET(s
->accept_socket
)) {
2608 r
= serialize_item(f
, "accept-socket", UNIT_DEREF(s
->accept_socket
)->id
);
2613 r
= serialize_fd(f
, fds
, "socket-fd", s
->socket_fd
);
2617 LIST_FOREACH(fd_store
, fs
, s
->fd_store
) {
2618 _cleanup_free_
char *c
= NULL
;
2621 copy
= fdset_put_dup(fds
, fs
->fd
);
2623 return log_error_errno(copy
, "Failed to copy file descriptor for serialization: %m");
2625 c
= cescape(fs
->fdname
);
2629 (void) serialize_item_format(f
, "fd-store-fd", "%i %s", copy
, c
);
2632 if (s
->main_exec_status
.pid
> 0) {
2633 (void) serialize_item_format(f
, "main-exec-status-pid", PID_FMT
, s
->main_exec_status
.pid
);
2634 (void) serialize_dual_timestamp(f
, "main-exec-status-start", &s
->main_exec_status
.start_timestamp
);
2635 (void) serialize_dual_timestamp(f
, "main-exec-status-exit", &s
->main_exec_status
.exit_timestamp
);
2637 if (dual_timestamp_is_set(&s
->main_exec_status
.exit_timestamp
)) {
2638 (void) serialize_item_format(f
, "main-exec-status-code", "%i", s
->main_exec_status
.code
);
2639 (void) serialize_item_format(f
, "main-exec-status-status", "%i", s
->main_exec_status
.status
);
2643 (void) serialize_dual_timestamp(f
, "watchdog-timestamp", &s
->watchdog_timestamp
);
2644 (void) serialize_bool(f
, "forbid-restart", s
->forbid_restart
);
2646 if (s
->watchdog_override_enable
)
2647 (void) serialize_item_format(f
, "watchdog-override-usec", USEC_FMT
, s
->watchdog_override_usec
);
2649 if (s
->watchdog_original_usec
!= USEC_INFINITY
)
2650 (void) serialize_item_format(f
, "watchdog-original-usec", USEC_FMT
, s
->watchdog_original_usec
);
2655 static int service_deserialize_exec_command(Unit
*u
, const char *key
, const char *value
) {
2656 Service
*s
= SERVICE(u
);
2658 unsigned idx
= 0, i
;
2659 bool control
, found
= false;
2660 ServiceExecCommand id
= _SERVICE_EXEC_COMMAND_INVALID
;
2661 ExecCommand
*command
= NULL
;
2662 _cleanup_free_
char *path
= NULL
;
2663 _cleanup_strv_free_
char **argv
= NULL
;
2665 enum ExecCommandState
{
2666 STATE_EXEC_COMMAND_TYPE
,
2667 STATE_EXEC_COMMAND_INDEX
,
2668 STATE_EXEC_COMMAND_PATH
,
2669 STATE_EXEC_COMMAND_ARGS
,
2670 _STATE_EXEC_COMMAND_MAX
,
2671 _STATE_EXEC_COMMAND_INVALID
= -1,
2678 control
= streq(key
, "control-command");
2680 state
= STATE_EXEC_COMMAND_TYPE
;
2683 _cleanup_free_
char *arg
= NULL
;
2685 r
= extract_first_word(&value
, &arg
, NULL
, EXTRACT_CUNESCAPE
);
2692 case STATE_EXEC_COMMAND_TYPE
:
2693 id
= service_exec_command_from_string(arg
);
2697 state
= STATE_EXEC_COMMAND_INDEX
;
2699 case STATE_EXEC_COMMAND_INDEX
:
2700 r
= safe_atou(arg
, &idx
);
2704 state
= STATE_EXEC_COMMAND_PATH
;
2706 case STATE_EXEC_COMMAND_PATH
:
2707 path
= TAKE_PTR(arg
);
2708 state
= STATE_EXEC_COMMAND_ARGS
;
2710 if (!path_is_absolute(path
))
2713 case STATE_EXEC_COMMAND_ARGS
:
2714 r
= strv_extend(&argv
, arg
);
2719 assert_not_reached("Unknown error at deserialization of exec command");
2724 if (state
!= STATE_EXEC_COMMAND_ARGS
)
2727 /* Let's check whether exec command on given offset matches data that we just deserialized */
2728 for (command
= s
->exec_command
[id
], i
= 0; command
; command
= command
->command_next
, i
++) {
2732 found
= strv_equal(argv
, command
->argv
) && streq(command
->path
, path
);
2737 /* Command at the index we serialized is different, let's look for command that exactly
2738 * matches but is on different index. If there is no such command we will not resume execution. */
2739 for (command
= s
->exec_command
[id
]; command
; command
= command
->command_next
)
2740 if (strv_equal(command
->argv
, argv
) && streq(command
->path
, path
))
2744 if (command
&& control
)
2745 s
->control_command
= command
;
2747 s
->main_command
= command
;
2749 log_unit_warning(u
, "Current command vanished from the unit file, execution of the command list won't be resumed.");
2754 static int service_deserialize_item(Unit
*u
, const char *key
, const char *value
, FDSet
*fds
) {
2755 Service
*s
= SERVICE(u
);
2763 if (streq(key
, "state")) {
2766 state
= service_state_from_string(value
);
2768 log_unit_debug(u
, "Failed to parse state value: %s", value
);
2770 s
->deserialized_state
= state
;
2771 } else if (streq(key
, "result")) {
2774 f
= service_result_from_string(value
);
2776 log_unit_debug(u
, "Failed to parse result value: %s", value
);
2777 else if (f
!= SERVICE_SUCCESS
)
2780 } else if (streq(key
, "reload-result")) {
2783 f
= service_result_from_string(value
);
2785 log_unit_debug(u
, "Failed to parse reload result value: %s", value
);
2786 else if (f
!= SERVICE_SUCCESS
)
2787 s
->reload_result
= f
;
2789 } else if (streq(key
, "control-pid")) {
2792 if (parse_pid(value
, &pid
) < 0)
2793 log_unit_debug(u
, "Failed to parse control-pid value: %s", value
);
2795 s
->control_pid
= pid
;
2796 } else if (streq(key
, "main-pid")) {
2799 if (parse_pid(value
, &pid
) < 0)
2800 log_unit_debug(u
, "Failed to parse main-pid value: %s", value
);
2802 (void) service_set_main_pid(s
, pid
);
2803 } else if (streq(key
, "main-pid-known")) {
2806 b
= parse_boolean(value
);
2808 log_unit_debug(u
, "Failed to parse main-pid-known value: %s", value
);
2810 s
->main_pid_known
= b
;
2811 } else if (streq(key
, "bus-name-good")) {
2814 b
= parse_boolean(value
);
2816 log_unit_debug(u
, "Failed to parse bus-name-good value: %s", value
);
2818 s
->bus_name_good
= b
;
2819 } else if (streq(key
, "bus-name-owner")) {
2820 r
= free_and_strdup(&s
->bus_name_owner
, value
);
2822 log_unit_error_errno(u
, r
, "Unable to deserialize current bus owner %s: %m", value
);
2823 } else if (streq(key
, "status-text")) {
2826 r
= cunescape(value
, 0, &t
);
2828 log_unit_debug_errno(u
, r
, "Failed to unescape status text '%s': %m", value
);
2830 free_and_replace(s
->status_text
, t
);
2832 } else if (streq(key
, "accept-socket")) {
2835 r
= manager_load_unit(u
->manager
, value
, NULL
, NULL
, &socket
);
2837 log_unit_debug_errno(u
, r
, "Failed to load accept-socket unit '%s': %m", value
);
2839 unit_ref_set(&s
->accept_socket
, u
, socket
);
2840 SOCKET(socket
)->n_connections
++;
2843 } else if (streq(key
, "socket-fd")) {
2846 if (safe_atoi(value
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2847 log_unit_debug(u
, "Failed to parse socket-fd value: %s", value
);
2849 asynchronous_close(s
->socket_fd
);
2850 s
->socket_fd
= fdset_remove(fds
, fd
);
2852 } else if (streq(key
, "fd-store-fd")) {
2857 pf
= strcspn(value
, WHITESPACE
);
2858 fdv
= strndupa(value
, pf
);
2860 if (safe_atoi(fdv
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2861 log_unit_debug(u
, "Failed to parse fd-store-fd value: %s", value
);
2863 _cleanup_free_
char *t
= NULL
;
2867 fdn
+= strspn(fdn
, WHITESPACE
);
2868 (void) cunescape(fdn
, 0, &t
);
2870 r
= service_add_fd_store(s
, fd
, t
);
2872 log_unit_error_errno(u
, r
, "Failed to add fd to store: %m");
2874 fdset_remove(fds
, fd
);
2877 } else if (streq(key
, "main-exec-status-pid")) {
2880 if (parse_pid(value
, &pid
) < 0)
2881 log_unit_debug(u
, "Failed to parse main-exec-status-pid value: %s", value
);
2883 s
->main_exec_status
.pid
= pid
;
2884 } else if (streq(key
, "main-exec-status-code")) {
2887 if (safe_atoi(value
, &i
) < 0)
2888 log_unit_debug(u
, "Failed to parse main-exec-status-code value: %s", value
);
2890 s
->main_exec_status
.code
= i
;
2891 } else if (streq(key
, "main-exec-status-status")) {
2894 if (safe_atoi(value
, &i
) < 0)
2895 log_unit_debug(u
, "Failed to parse main-exec-status-status value: %s", value
);
2897 s
->main_exec_status
.status
= i
;
2898 } else if (streq(key
, "main-exec-status-start"))
2899 deserialize_dual_timestamp(value
, &s
->main_exec_status
.start_timestamp
);
2900 else if (streq(key
, "main-exec-status-exit"))
2901 deserialize_dual_timestamp(value
, &s
->main_exec_status
.exit_timestamp
);
2902 else if (streq(key
, "watchdog-timestamp"))
2903 deserialize_dual_timestamp(value
, &s
->watchdog_timestamp
);
2904 else if (streq(key
, "forbid-restart")) {
2907 b
= parse_boolean(value
);
2909 log_unit_debug(u
, "Failed to parse forbid-restart value: %s", value
);
2911 s
->forbid_restart
= b
;
2912 } else if (streq(key
, "stdin-fd")) {
2915 if (safe_atoi(value
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2916 log_unit_debug(u
, "Failed to parse stdin-fd value: %s", value
);
2918 asynchronous_close(s
->stdin_fd
);
2919 s
->stdin_fd
= fdset_remove(fds
, fd
);
2920 s
->exec_context
.stdio_as_fds
= true;
2922 } else if (streq(key
, "stdout-fd")) {
2925 if (safe_atoi(value
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2926 log_unit_debug(u
, "Failed to parse stdout-fd value: %s", value
);
2928 asynchronous_close(s
->stdout_fd
);
2929 s
->stdout_fd
= fdset_remove(fds
, fd
);
2930 s
->exec_context
.stdio_as_fds
= true;
2932 } else if (streq(key
, "stderr-fd")) {
2935 if (safe_atoi(value
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2936 log_unit_debug(u
, "Failed to parse stderr-fd value: %s", value
);
2938 asynchronous_close(s
->stderr_fd
);
2939 s
->stderr_fd
= fdset_remove(fds
, fd
);
2940 s
->exec_context
.stdio_as_fds
= true;
2942 } else if (streq(key
, "exec-fd")) {
2945 if (safe_atoi(value
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2946 log_unit_debug(u
, "Failed to parse exec-fd value: %s", value
);
2948 s
->exec_fd_event_source
= sd_event_source_unref(s
->exec_fd_event_source
);
2950 fd
= fdset_remove(fds
, fd
);
2951 if (service_allocate_exec_fd_event_source(s
, fd
, &s
->exec_fd_event_source
) < 0)
2954 } else if (streq(key
, "watchdog-override-usec")) {
2955 if (deserialize_usec(value
, &s
->watchdog_override_usec
) < 0)
2956 log_unit_debug(u
, "Failed to parse watchdog_override_usec value: %s", value
);
2958 s
->watchdog_override_enable
= true;
2960 } else if (streq(key
, "watchdog-original-usec")) {
2961 if (deserialize_usec(value
, &s
->watchdog_original_usec
) < 0)
2962 log_unit_debug(u
, "Failed to parse watchdog_original_usec value: %s", value
);
2964 } else if (STR_IN_SET(key
, "main-command", "control-command")) {
2965 r
= service_deserialize_exec_command(u
, key
, value
);
2967 log_unit_debug_errno(u
, r
, "Failed to parse serialized command \"%s\": %m", value
);
2969 } else if (streq(key
, "n-restarts")) {
2970 r
= safe_atou(value
, &s
->n_restarts
);
2972 log_unit_debug_errno(u
, r
, "Failed to parse serialized restart counter '%s': %m", value
);
2974 } else if (streq(key
, "flush-n-restarts")) {
2975 r
= parse_boolean(value
);
2977 log_unit_debug_errno(u
, r
, "Failed to parse serialized flush restart counter setting '%s': %m", value
);
2979 s
->flush_n_restarts
= r
;
2981 log_unit_debug(u
, "Unknown serialization key: %s", key
);
2986 _pure_
static UnitActiveState
service_active_state(Unit
*u
) {
2987 const UnitActiveState
*table
;
2991 table
= SERVICE(u
)->type
== SERVICE_IDLE
? state_translation_table_idle
: state_translation_table
;
2993 return table
[SERVICE(u
)->state
];
2996 static const char *service_sub_state_to_string(Unit
*u
) {
2999 return service_state_to_string(SERVICE(u
)->state
);
3002 static bool service_may_gc(Unit
*u
) {
3003 Service
*s
= SERVICE(u
);
3007 /* Never clean up services that still have a process around, even if the service is formally dead. Note that
3008 * unit_may_gc() already checked our cgroup for us, we just check our two additional PIDs, too, in case they
3009 * have moved outside of the cgroup. */
3011 if (main_pid_good(s
) > 0 ||
3012 control_pid_good(s
) > 0)
3018 static int service_retry_pid_file(Service
*s
) {
3021 assert(s
->pid_file
);
3022 assert(IN_SET(s
->state
, SERVICE_START
, SERVICE_START_POST
));
3024 r
= service_load_pid_file(s
, false);
3028 service_unwatch_pid_file(s
);
3030 service_enter_running(s
, SERVICE_SUCCESS
);
3034 static int service_watch_pid_file(Service
*s
) {
3037 log_unit_debug(UNIT(s
), "Setting watch for PID file %s", s
->pid_file_pathspec
->path
);
3039 r
= path_spec_watch(s
->pid_file_pathspec
, service_dispatch_inotify_io
);
3043 /* the pidfile might have appeared just before we set the watch */
3044 log_unit_debug(UNIT(s
), "Trying to read PID file %s in case it changed", s
->pid_file_pathspec
->path
);
3045 service_retry_pid_file(s
);
3049 log_unit_error_errno(UNIT(s
), r
, "Failed to set a watch for PID file %s: %m", s
->pid_file_pathspec
->path
);
3050 service_unwatch_pid_file(s
);
3054 static int service_demand_pid_file(Service
*s
) {
3057 assert(s
->pid_file
);
3058 assert(!s
->pid_file_pathspec
);
3060 ps
= new0(PathSpec
, 1);
3065 ps
->path
= strdup(s
->pid_file
);
3071 path_simplify(ps
->path
, false);
3073 /* PATH_CHANGED would not be enough. There are daemons (sendmail) that
3074 * keep their PID file open all the time. */
3075 ps
->type
= PATH_MODIFIED
;
3076 ps
->inotify_fd
= -1;
3078 s
->pid_file_pathspec
= ps
;
3080 return service_watch_pid_file(s
);
3083 static int service_dispatch_inotify_io(sd_event_source
*source
, int fd
, uint32_t events
, void *userdata
) {
3084 PathSpec
*p
= userdata
;
3089 s
= SERVICE(p
->unit
);
3093 assert(IN_SET(s
->state
, SERVICE_START
, SERVICE_START_POST
));
3094 assert(s
->pid_file_pathspec
);
3095 assert(path_spec_owns_inotify_fd(s
->pid_file_pathspec
, fd
));
3097 log_unit_debug(UNIT(s
), "inotify event");
3099 if (path_spec_fd_event(p
, events
) < 0)
3102 if (service_retry_pid_file(s
) == 0)
3105 if (service_watch_pid_file(s
) < 0)
3111 service_unwatch_pid_file(s
);
3112 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
3116 static int service_dispatch_exec_io(sd_event_source
*source
, int fd
, uint32_t events
, void *userdata
) {
3117 Service
*s
= SERVICE(userdata
);
3121 log_unit_debug(UNIT(s
), "got exec-fd event");
3123 /* If Type=exec is set, we'll consider a service started successfully the instant we invoked execve()
3124 * successfully for it. We implement this through a pipe() towards the child, which the kernel automatically
3125 * closes for us due to O_CLOEXEC on execve() in the child, which then triggers EOF on the pipe in the
3126 * parent. We need to be careful however, as there are other reasons that we might cause the child's side of
3127 * the pipe to be closed (for example, a simple exit()). To deal with that we'll ignore EOFs on the pipe unless
3128 * the child signalled us first that it is about to call the execve(). It does so by sending us a simple
3129 * non-zero byte via the pipe. We also provide the child with a way to inform us in case execve() failed: if it
3130 * sends a zero byte we'll ignore POLLHUP on the fd again. */
3136 n
= read(fd
, &x
, sizeof(x
));
3138 if (errno
== EAGAIN
) /* O_NONBLOCK in effect → everything queued has now been processed. */
3141 return log_unit_error_errno(UNIT(s
), errno
, "Failed to read from exec_fd: %m");
3143 if (n
== 0) { /* EOF → the event we are waiting for */
3145 s
->exec_fd_event_source
= sd_event_source_unref(s
->exec_fd_event_source
);
3147 if (s
->exec_fd_hot
) { /* Did the child tell us to expect EOF now? */
3148 log_unit_debug(UNIT(s
), "Got EOF on exec-fd");
3150 s
->exec_fd_hot
= false;
3152 /* Nice! This is what we have been waiting for. Transition to next state. */
3153 if (s
->type
== SERVICE_EXEC
&& s
->state
== SERVICE_START
)
3154 service_enter_start_post(s
);
3156 log_unit_debug(UNIT(s
), "Got EOF on exec-fd while it was disabled, ignoring.");
3161 /* A byte was read → this turns on/off the exec fd logic */
3162 assert(n
== sizeof(x
));
3169 static void service_notify_cgroup_empty_event(Unit
*u
) {
3170 Service
*s
= SERVICE(u
);
3174 log_unit_debug(u
, "Control group is empty.");
3178 /* Waiting for SIGCHLD is usually more interesting,
3179 * because it includes return codes/signals. Which is
3180 * why we ignore the cgroup events for most cases,
3181 * except when we don't know pid which to expect the
3185 if (s
->type
== SERVICE_NOTIFY
&&
3186 main_pid_good(s
) == 0 &&
3187 control_pid_good(s
) == 0) {
3188 /* No chance of getting a ready notification anymore */
3189 service_enter_stop_post(s
, SERVICE_FAILURE_PROTOCOL
);
3194 case SERVICE_START_POST
:
3195 if (s
->pid_file_pathspec
&&
3196 main_pid_good(s
) == 0 &&
3197 control_pid_good(s
) == 0) {
3199 /* Give up hoping for the daemon to write its PID file */
3200 log_unit_warning(u
, "Daemon never wrote its PID file. Failing.");
3202 service_unwatch_pid_file(s
);
3203 if (s
->state
== SERVICE_START
)
3204 service_enter_stop_post(s
, SERVICE_FAILURE_PROTOCOL
);
3206 service_enter_stop(s
, SERVICE_FAILURE_PROTOCOL
);
3210 case SERVICE_RUNNING
:
3211 /* service_enter_running() will figure out what to do */
3212 service_enter_running(s
, SERVICE_SUCCESS
);
3215 case SERVICE_STOP_WATCHDOG
:
3216 case SERVICE_STOP_SIGTERM
:
3217 case SERVICE_STOP_SIGKILL
:
3219 if (main_pid_good(s
) <= 0 && control_pid_good(s
) <= 0)
3220 service_enter_stop_post(s
, SERVICE_SUCCESS
);
3224 case SERVICE_STOP_POST
:
3225 case SERVICE_FINAL_SIGTERM
:
3226 case SERVICE_FINAL_SIGKILL
:
3227 if (main_pid_good(s
) <= 0 && control_pid_good(s
) <= 0)
3228 service_enter_dead(s
, SERVICE_SUCCESS
, true);
3237 static void service_notify_cgroup_oom_event(Unit
*u
) {
3238 Service
*s
= SERVICE(u
);
3240 log_unit_debug(u
, "Process of control group was killed by the OOM killer.");
3242 if (s
->oom_policy
== OOM_CONTINUE
)
3247 case SERVICE_START_PRE
:
3249 case SERVICE_START_POST
:
3251 if (s
->oom_policy
== OOM_STOP
)
3252 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_OOM_KILL
);
3253 else if (s
->oom_policy
== OOM_KILL
)
3254 service_enter_signal(s
, SERVICE_STOP_SIGKILL
, SERVICE_FAILURE_OOM_KILL
);
3258 case SERVICE_EXITED
:
3259 case SERVICE_RUNNING
:
3260 if (s
->oom_policy
== OOM_STOP
)
3261 service_enter_stop(s
, SERVICE_FAILURE_OOM_KILL
);
3262 else if (s
->oom_policy
== OOM_KILL
)
3263 service_enter_signal(s
, SERVICE_STOP_SIGKILL
, SERVICE_FAILURE_OOM_KILL
);
3267 case SERVICE_STOP_WATCHDOG
:
3268 case SERVICE_STOP_SIGTERM
:
3269 service_enter_signal(s
, SERVICE_STOP_SIGKILL
, SERVICE_FAILURE_OOM_KILL
);
3272 case SERVICE_STOP_SIGKILL
:
3273 case SERVICE_FINAL_SIGKILL
:
3274 if (s
->result
== SERVICE_SUCCESS
)
3275 s
->result
= SERVICE_FAILURE_OOM_KILL
;
3278 case SERVICE_STOP_POST
:
3279 case SERVICE_FINAL_SIGTERM
:
3280 service_enter_signal(s
, SERVICE_FINAL_SIGKILL
, SERVICE_FAILURE_OOM_KILL
);
3288 static void service_sigchld_event(Unit
*u
, pid_t pid
, int code
, int status
) {
3289 bool notify_dbus
= true;
3290 Service
*s
= SERVICE(u
);
3292 ExitClean clean_mode
;
3297 /* Oneshot services and non-SERVICE_EXEC_START commands should not be
3298 * considered daemons as they are typically not long running. */
3299 if (s
->type
== SERVICE_ONESHOT
|| (s
->control_pid
== pid
&& s
->control_command_id
!= SERVICE_EXEC_START
))
3300 clean_mode
= EXIT_CLEAN_COMMAND
;
3302 clean_mode
= EXIT_CLEAN_DAEMON
;
3304 if (is_clean_exit(code
, status
, clean_mode
, &s
->success_status
))
3305 f
= SERVICE_SUCCESS
;
3306 else if (code
== CLD_EXITED
)
3307 f
= SERVICE_FAILURE_EXIT_CODE
;
3308 else if (code
== CLD_KILLED
)
3309 f
= SERVICE_FAILURE_SIGNAL
;
3310 else if (code
== CLD_DUMPED
)
3311 f
= SERVICE_FAILURE_CORE_DUMP
;
3313 assert_not_reached("Unknown code");
3315 if (s
->main_pid
== pid
) {
3316 /* Forking services may occasionally move to a new PID.
3317 * As long as they update the PID file before exiting the old
3318 * PID, they're fine. */
3319 if (service_load_pid_file(s
, false) > 0)
3323 exec_status_exit(&s
->main_exec_status
, &s
->exec_context
, pid
, code
, status
);
3325 if (s
->main_command
) {
3326 /* If this is not a forking service than the
3327 * main process got started and hence we copy
3328 * the exit status so that it is recorded both
3329 * as main and as control process exit
3332 s
->main_command
->exec_status
= s
->main_exec_status
;
3334 if (s
->main_command
->flags
& EXEC_COMMAND_IGNORE_FAILURE
)
3335 f
= SERVICE_SUCCESS
;
3336 } else if (s
->exec_command
[SERVICE_EXEC_START
]) {
3338 /* If this is a forked process, then we should
3339 * ignore the return value if this was
3340 * configured for the starter process */
3342 if (s
->exec_command
[SERVICE_EXEC_START
]->flags
& EXEC_COMMAND_IGNORE_FAILURE
)
3343 f
= SERVICE_SUCCESS
;
3346 /* When this is a successful exit, let's log about the exit code on DEBUG level. If this is a failure
3347 * and the process exited on its own via exit(), then let's make this a NOTICE, under the assumption
3348 * that the service already logged the reason at a higher log level on its own. (Internally,
3349 * unit_log_process_exit() will possibly bump this to WARNING if the service died due to a signal.) */
3350 unit_log_process_exit(
3351 u
, f
== SERVICE_SUCCESS
? LOG_DEBUG
: LOG_NOTICE
,
3353 service_exec_command_to_string(SERVICE_EXEC_START
),
3356 if (s
->result
== SERVICE_SUCCESS
)
3359 if (s
->main_command
&&
3360 s
->main_command
->command_next
&&
3361 s
->type
== SERVICE_ONESHOT
&&
3362 f
== SERVICE_SUCCESS
) {
3364 /* There is another command to *
3365 * execute, so let's do that. */
3367 log_unit_debug(u
, "Running next main command for state %s.", service_state_to_string(s
->state
));
3368 service_run_next_main(s
);
3372 /* The service exited, so the service is officially
3374 s
->main_command
= NULL
;
3378 case SERVICE_START_POST
:
3379 case SERVICE_RELOAD
:
3381 /* Need to wait until the operation is
3386 if (s
->type
== SERVICE_ONESHOT
) {
3387 /* This was our main goal, so let's go on */
3388 if (f
== SERVICE_SUCCESS
)
3389 service_enter_start_post(s
);
3391 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, f
);
3393 } else if (s
->type
== SERVICE_NOTIFY
) {
3394 /* Only enter running through a notification, so that the
3395 * SERVICE_START state signifies that no ready notification
3396 * has been received */
3397 if (f
!= SERVICE_SUCCESS
)
3398 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, f
);
3399 else if (!s
->remain_after_exit
|| s
->notify_access
== NOTIFY_MAIN
)
3400 /* The service has never been and will never be active */
3401 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_PROTOCOL
);
3406 case SERVICE_RUNNING
:
3407 service_enter_running(s
, f
);
3410 case SERVICE_STOP_WATCHDOG
:
3411 case SERVICE_STOP_SIGTERM
:
3412 case SERVICE_STOP_SIGKILL
:
3414 if (control_pid_good(s
) <= 0)
3415 service_enter_stop_post(s
, f
);
3417 /* If there is still a control process, wait for that first */
3420 case SERVICE_STOP_POST
:
3421 case SERVICE_FINAL_SIGTERM
:
3422 case SERVICE_FINAL_SIGKILL
:
3424 if (control_pid_good(s
) <= 0)
3425 service_enter_dead(s
, f
, true);
3429 assert_not_reached("Uh, main process died at wrong time.");
3433 } else if (s
->control_pid
== pid
) {
3436 if (s
->control_command
) {
3437 exec_status_exit(&s
->control_command
->exec_status
, &s
->exec_context
, pid
, code
, status
);
3439 if (s
->control_command
->flags
& EXEC_COMMAND_IGNORE_FAILURE
)
3440 f
= SERVICE_SUCCESS
;
3443 unit_log_process_exit(
3444 u
, f
== SERVICE_SUCCESS
? LOG_DEBUG
: LOG_NOTICE
,
3446 service_exec_command_to_string(s
->control_command_id
),
3449 if (s
->result
== SERVICE_SUCCESS
)
3452 if (s
->control_command
&&
3453 s
->control_command
->command_next
&&
3454 f
== SERVICE_SUCCESS
) {
3456 /* There is another command to *
3457 * execute, so let's do that. */
3459 log_unit_debug(u
, "Running next control command for state %s.", service_state_to_string(s
->state
));
3460 service_run_next_control(s
);
3463 /* No further commands for this step, so let's
3464 * figure out what to do next */
3466 s
->control_command
= NULL
;
3467 s
->control_command_id
= _SERVICE_EXEC_COMMAND_INVALID
;
3469 log_unit_debug(u
, "Got final SIGCHLD for state %s.", service_state_to_string(s
->state
));
3473 case SERVICE_START_PRE
:
3474 if (f
== SERVICE_SUCCESS
)
3475 service_enter_start(s
);
3477 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, f
);
3481 if (s
->type
!= SERVICE_FORKING
)
3482 /* Maybe spurious event due to a reload that changed the type? */
3485 if (f
!= SERVICE_SUCCESS
) {
3486 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, f
);
3491 bool has_start_post
;
3494 /* Let's try to load the pid file here if we can.
3495 * The PID file might actually be created by a START_POST
3496 * script. In that case don't worry if the loading fails. */
3498 has_start_post
= s
->exec_command
[SERVICE_EXEC_START_POST
];
3499 r
= service_load_pid_file(s
, !has_start_post
);
3500 if (!has_start_post
&& r
< 0) {
3501 r
= service_demand_pid_file(s
);
3502 if (r
< 0 || cgroup_good(s
) == 0)
3503 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_PROTOCOL
);
3507 service_search_main_pid(s
);
3509 service_enter_start_post(s
);
3512 case SERVICE_START_POST
:
3513 if (f
!= SERVICE_SUCCESS
) {
3514 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, f
);
3521 r
= service_load_pid_file(s
, true);
3523 r
= service_demand_pid_file(s
);
3524 if (r
< 0 || cgroup_good(s
) == 0)
3525 service_enter_stop(s
, SERVICE_FAILURE_PROTOCOL
);
3529 service_search_main_pid(s
);
3531 service_enter_running(s
, SERVICE_SUCCESS
);
3534 case SERVICE_RELOAD
:
3535 if (f
== SERVICE_SUCCESS
)
3536 if (service_load_pid_file(s
, true) < 0)
3537 service_search_main_pid(s
);
3539 s
->reload_result
= f
;
3540 service_enter_running(s
, SERVICE_SUCCESS
);
3544 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, f
);
3547 case SERVICE_STOP_WATCHDOG
:
3548 case SERVICE_STOP_SIGTERM
:
3549 case SERVICE_STOP_SIGKILL
:
3550 if (main_pid_good(s
) <= 0)
3551 service_enter_stop_post(s
, f
);
3553 /* If there is still a service process around, wait until
3554 * that one quit, too */
3557 case SERVICE_STOP_POST
:
3558 case SERVICE_FINAL_SIGTERM
:
3559 case SERVICE_FINAL_SIGKILL
:
3560 if (main_pid_good(s
) <= 0)
3561 service_enter_dead(s
, f
, true);
3565 assert_not_reached("Uh, control process died at wrong time.");
3568 } else /* Neither control nor main PID? If so, don't notify about anything */
3569 notify_dbus
= false;
3571 /* Notify clients about changed exit status */
3573 unit_add_to_dbus_queue(u
);
3575 /* We watch the main/control process otherwise we can't retrieve the unit they
3576 * belong to with cgroupv1. But if they are not our direct child, we won't get a
3577 * SIGCHLD for them. Therefore we need to look for others to watch so we can
3578 * detect when the cgroup becomes empty. Note that the control process is always
3579 * our child so it's pointless to watch all other processes. */
3580 if (!control_pid_good(s
))
3581 if (!s
->main_pid_known
|| s
->main_pid_alien
)
3582 (void) unit_enqueue_rewatch_pids(u
);
3585 static int service_dispatch_timer(sd_event_source
*source
, usec_t usec
, void *userdata
) {
3586 Service
*s
= SERVICE(userdata
);
3589 assert(source
== s
->timer_event_source
);
3593 case SERVICE_START_PRE
:
3595 log_unit_warning(UNIT(s
), "%s operation timed out. Terminating.", s
->state
== SERVICE_START
? "Start" : "Start-pre");
3596 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_TIMEOUT
);
3599 case SERVICE_START_POST
:
3600 log_unit_warning(UNIT(s
), "Start-post operation timed out. Stopping.");
3601 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_TIMEOUT
);
3604 case SERVICE_RUNNING
:
3605 log_unit_warning(UNIT(s
), "Service reached runtime time limit. Stopping.");
3606 service_enter_stop(s
, SERVICE_FAILURE_TIMEOUT
);
3609 case SERVICE_RELOAD
:
3610 log_unit_warning(UNIT(s
), "Reload operation timed out. Killing reload process.");
3611 service_kill_control_process(s
);
3612 s
->reload_result
= SERVICE_FAILURE_TIMEOUT
;
3613 service_enter_running(s
, SERVICE_SUCCESS
);
3617 log_unit_warning(UNIT(s
), "Stopping timed out. Terminating.");
3618 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_TIMEOUT
);
3621 case SERVICE_STOP_WATCHDOG
:
3622 log_unit_warning(UNIT(s
), "State 'stop-watchdog' timed out. Terminating.");
3623 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_TIMEOUT
);
3626 case SERVICE_STOP_SIGTERM
:
3627 if (s
->kill_context
.send_sigkill
) {
3628 log_unit_warning(UNIT(s
), "State 'stop-sigterm' timed out. Killing.");
3629 service_enter_signal(s
, SERVICE_STOP_SIGKILL
, SERVICE_FAILURE_TIMEOUT
);
3631 log_unit_warning(UNIT(s
), "State 'stop-sigterm' timed out. Skipping SIGKILL.");
3632 service_enter_stop_post(s
, SERVICE_FAILURE_TIMEOUT
);
3637 case SERVICE_STOP_SIGKILL
:
3638 /* Uh, we sent a SIGKILL and it is still not gone?
3639 * Must be something we cannot kill, so let's just be
3640 * weirded out and continue */
3642 log_unit_warning(UNIT(s
), "Processes still around after SIGKILL. Ignoring.");
3643 service_enter_stop_post(s
, SERVICE_FAILURE_TIMEOUT
);
3646 case SERVICE_STOP_POST
:
3647 log_unit_warning(UNIT(s
), "State 'stop-post' timed out. Terminating.");
3648 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, SERVICE_FAILURE_TIMEOUT
);
3651 case SERVICE_FINAL_SIGTERM
:
3652 if (s
->kill_context
.send_sigkill
) {
3653 log_unit_warning(UNIT(s
), "State 'stop-final-sigterm' timed out. Killing.");
3654 service_enter_signal(s
, SERVICE_FINAL_SIGKILL
, SERVICE_FAILURE_TIMEOUT
);
3656 log_unit_warning(UNIT(s
), "State 'stop-final-sigterm' timed out. Skipping SIGKILL. Entering failed mode.");
3657 service_enter_dead(s
, SERVICE_FAILURE_TIMEOUT
, false);
3662 case SERVICE_FINAL_SIGKILL
:
3663 log_unit_warning(UNIT(s
), "Processes still around after final SIGKILL. Entering failed mode.");
3664 service_enter_dead(s
, SERVICE_FAILURE_TIMEOUT
, true);
3667 case SERVICE_AUTO_RESTART
:
3668 if (s
->restart_usec
> 0) {
3669 char buf_restart
[FORMAT_TIMESPAN_MAX
];
3670 log_unit_info(UNIT(s
),
3671 "Service RestartSec=%s expired, scheduling restart.",
3672 format_timespan(buf_restart
, sizeof buf_restart
, s
->restart_usec
, USEC_PER_SEC
));
3674 log_unit_info(UNIT(s
),
3675 "Service has no hold-off time (RestartSec=0), scheduling restart.");
3677 service_enter_restart(s
);
3681 assert_not_reached("Timeout at wrong time.");
3687 static int service_dispatch_watchdog(sd_event_source
*source
, usec_t usec
, void *userdata
) {
3688 Service
*s
= SERVICE(userdata
);
3689 char t
[FORMAT_TIMESPAN_MAX
];
3690 usec_t watchdog_usec
;
3693 assert(source
== s
->watchdog_event_source
);
3695 watchdog_usec
= service_get_watchdog_usec(s
);
3697 if (UNIT(s
)->manager
->service_watchdogs
) {
3698 log_unit_error(UNIT(s
), "Watchdog timeout (limit %s)!",
3699 format_timespan(t
, sizeof(t
), watchdog_usec
, 1));
3701 service_enter_signal(s
, SERVICE_STOP_WATCHDOG
, SERVICE_FAILURE_WATCHDOG
);
3703 log_unit_warning(UNIT(s
), "Watchdog disabled! Ignoring watchdog timeout (limit %s)!",
3704 format_timespan(t
, sizeof(t
), watchdog_usec
, 1));
3709 static bool service_notify_message_authorized(Service
*s
, pid_t pid
, char **tags
, FDSet
*fds
) {
3712 if (s
->notify_access
== NOTIFY_NONE
) {
3713 log_unit_warning(UNIT(s
), "Got notification message from PID "PID_FMT
", but reception is disabled.", pid
);
3717 if (s
->notify_access
== NOTIFY_MAIN
&& pid
!= s
->main_pid
) {
3718 if (s
->main_pid
!= 0)
3719 log_unit_warning(UNIT(s
), "Got notification message from PID "PID_FMT
", but reception only permitted for main PID "PID_FMT
, pid
, s
->main_pid
);
3721 log_unit_warning(UNIT(s
), "Got notification message from PID "PID_FMT
", but reception only permitted for main PID which is currently not known", pid
);
3726 if (s
->notify_access
== NOTIFY_EXEC
&& pid
!= s
->main_pid
&& pid
!= s
->control_pid
) {
3727 if (s
->main_pid
!= 0 && s
->control_pid
!= 0)
3728 log_unit_warning(UNIT(s
), "Got notification message from PID "PID_FMT
", but reception only permitted for main PID "PID_FMT
" and control PID "PID_FMT
,
3729 pid
, s
->main_pid
, s
->control_pid
);
3730 else if (s
->main_pid
!= 0)
3731 log_unit_warning(UNIT(s
), "Got notification message from PID "PID_FMT
", but reception only permitted for main PID "PID_FMT
, pid
, s
->main_pid
);
3732 else if (s
->control_pid
!= 0)
3733 log_unit_warning(UNIT(s
), "Got notification message from PID "PID_FMT
", but reception only permitted for control PID "PID_FMT
, pid
, s
->control_pid
);
3735 log_unit_warning(UNIT(s
), "Got notification message from PID "PID_FMT
", but reception only permitted for main PID and control PID which are currently not known", pid
);
3743 static void service_force_watchdog(Service
*s
) {
3744 if (!UNIT(s
)->manager
->service_watchdogs
)
3747 log_unit_error(UNIT(s
), "Watchdog request (last status: %s)!",
3748 s
->status_text
? s
->status_text
: "<unset>");
3750 service_enter_signal(s
, SERVICE_STOP_WATCHDOG
, SERVICE_FAILURE_WATCHDOG
);
3753 static void service_notify_message(
3755 const struct ucred
*ucred
,
3759 Service
*s
= SERVICE(u
);
3760 bool notify_dbus
= false;
3768 if (!service_notify_message_authorized(SERVICE(u
), ucred
->pid
, tags
, fds
))
3771 if (DEBUG_LOGGING
) {
3772 _cleanup_free_
char *cc
= NULL
;
3774 cc
= strv_join(tags
, ", ");
3775 log_unit_debug(u
, "Got notification message from PID "PID_FMT
" (%s)", ucred
->pid
, isempty(cc
) ? "n/a" : cc
);
3778 /* Interpret MAINPID= */
3779 e
= strv_find_startswith(tags
, "MAINPID=");
3780 if (e
&& IN_SET(s
->state
, SERVICE_START
, SERVICE_START_POST
, SERVICE_RUNNING
, SERVICE_RELOAD
)) {
3783 if (parse_pid(e
, &new_main_pid
) < 0)
3784 log_unit_warning(u
, "Failed to parse MAINPID= field in notification message, ignoring: %s", e
);
3785 else if (!s
->main_pid_known
|| new_main_pid
!= s
->main_pid
) {
3787 r
= service_is_suitable_main_pid(s
, new_main_pid
, LOG_WARNING
);
3789 /* The new main PID is a bit suspicious, which is OK if the sender is privileged. */
3791 if (ucred
->uid
== 0) {
3792 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
);
3795 log_unit_debug(u
, "New main PID "PID_FMT
" does not belong to service, refusing.", new_main_pid
);
3798 service_set_main_pid(s
, new_main_pid
);
3800 r
= unit_watch_pid(UNIT(s
), new_main_pid
, false);
3802 log_unit_warning_errno(UNIT(s
), r
, "Failed to watch new main PID "PID_FMT
" for service: %m", new_main_pid
);
3809 /* Interpret READY=/STOPPING=/RELOADING=. Last one wins. */
3810 STRV_FOREACH_BACKWARDS(i
, tags
) {
3812 if (streq(*i
, "READY=1")) {
3813 s
->notify_state
= NOTIFY_READY
;
3815 /* Type=notify services inform us about completed
3816 * initialization with READY=1 */
3817 if (s
->type
== SERVICE_NOTIFY
&& s
->state
== SERVICE_START
)
3818 service_enter_start_post(s
);
3820 /* Sending READY=1 while we are reloading informs us
3821 * that the reloading is complete */
3822 if (s
->state
== SERVICE_RELOAD
&& s
->control_pid
== 0)
3823 service_enter_running(s
, SERVICE_SUCCESS
);
3828 } else if (streq(*i
, "RELOADING=1")) {
3829 s
->notify_state
= NOTIFY_RELOADING
;
3831 if (s
->state
== SERVICE_RUNNING
)
3832 service_enter_reload_by_notify(s
);
3837 } else if (streq(*i
, "STOPPING=1")) {
3838 s
->notify_state
= NOTIFY_STOPPING
;
3840 if (s
->state
== SERVICE_RUNNING
)
3841 service_enter_stop_by_notify(s
);
3848 /* Interpret STATUS= */
3849 e
= strv_find_startswith(tags
, "STATUS=");
3851 _cleanup_free_
char *t
= NULL
;
3854 /* Note that this size limit check is mostly paranoia: since the datagram size we are willing
3855 * to process is already limited to NOTIFY_BUFFER_MAX, this limit here should never be hit. */
3856 if (strlen(e
) > STATUS_TEXT_MAX
)
3857 log_unit_warning(u
, "Status message overly long (%zu > %u), ignoring.", strlen(e
), STATUS_TEXT_MAX
);
3858 else if (!utf8_is_valid(e
))
3859 log_unit_warning(u
, "Status message in notification message is not UTF-8 clean, ignoring.");
3867 if (!streq_ptr(s
->status_text
, t
)) {
3868 free_and_replace(s
->status_text
, t
);
3873 /* Interpret ERRNO= */
3874 e
= strv_find_startswith(tags
, "ERRNO=");
3878 status_errno
= parse_errno(e
);
3879 if (status_errno
< 0)
3880 log_unit_warning_errno(u
, status_errno
,
3881 "Failed to parse ERRNO= field value '%s' in notification message: %m", e
);
3882 else if (s
->status_errno
!= status_errno
) {
3883 s
->status_errno
= status_errno
;
3888 /* Interpret EXTEND_TIMEOUT= */
3889 e
= strv_find_startswith(tags
, "EXTEND_TIMEOUT_USEC=");
3891 usec_t extend_timeout_usec
;
3892 if (safe_atou64(e
, &extend_timeout_usec
) < 0)
3893 log_unit_warning(u
, "Failed to parse EXTEND_TIMEOUT_USEC=%s", e
);
3895 service_extend_timeout(s
, extend_timeout_usec
);
3898 /* Interpret WATCHDOG= */
3899 e
= strv_find_startswith(tags
, "WATCHDOG=");
3902 service_reset_watchdog(s
);
3903 else if (streq(e
, "trigger"))
3904 service_force_watchdog(s
);
3906 log_unit_warning(u
, "Passed WATCHDOG= field is invalid, ignoring.");
3909 e
= strv_find_startswith(tags
, "WATCHDOG_USEC=");
3911 usec_t watchdog_override_usec
;
3912 if (safe_atou64(e
, &watchdog_override_usec
) < 0)
3913 log_unit_warning(u
, "Failed to parse WATCHDOG_USEC=%s", e
);
3915 service_override_watchdog_timeout(s
, watchdog_override_usec
);
3918 /* Process FD store messages. Either FDSTOREREMOVE=1 for removal, or FDSTORE=1 for addition. In both cases,
3919 * process FDNAME= for picking the file descriptor name to use. Note that FDNAME= is required when removing
3920 * fds, but optional when pushing in new fds, for compatibility reasons. */
3921 if (strv_find(tags
, "FDSTOREREMOVE=1")) {
3924 name
= strv_find_startswith(tags
, "FDNAME=");
3925 if (!name
|| !fdname_is_valid(name
))
3926 log_unit_warning(u
, "FDSTOREREMOVE=1 requested, but no valid file descriptor name passed, ignoring.");
3928 service_remove_fd_store(s
, name
);
3930 } else if (strv_find(tags
, "FDSTORE=1")) {
3933 name
= strv_find_startswith(tags
, "FDNAME=");
3934 if (name
&& !fdname_is_valid(name
)) {
3935 log_unit_warning(u
, "Passed FDNAME= name is invalid, ignoring.");
3939 (void) service_add_fd_store_set(s
, fds
, name
);
3942 /* Notify clients about changed status or main pid */
3944 unit_add_to_dbus_queue(u
);
3947 static int service_get_timeout(Unit
*u
, usec_t
*timeout
) {
3948 Service
*s
= SERVICE(u
);
3952 if (!s
->timer_event_source
)
3955 r
= sd_event_source_get_time(s
->timer_event_source
, &t
);
3958 if (t
== USEC_INFINITY
)
3965 static void service_bus_name_owner_change(
3968 const char *old_owner
,
3969 const char *new_owner
) {
3971 Service
*s
= SERVICE(u
);
3977 assert(streq(s
->bus_name
, name
));
3978 assert(old_owner
|| new_owner
);
3980 if (old_owner
&& new_owner
)
3981 log_unit_debug(u
, "D-Bus name %s changed owner from %s to %s", name
, old_owner
, new_owner
);
3983 log_unit_debug(u
, "D-Bus name %s no longer registered by %s", name
, old_owner
);
3985 log_unit_debug(u
, "D-Bus name %s now registered by %s", name
, new_owner
);
3987 s
->bus_name_good
= !!new_owner
;
3989 /* Track the current owner, so we can reconstruct changes after a daemon reload */
3990 r
= free_and_strdup(&s
->bus_name_owner
, new_owner
);
3992 log_unit_error_errno(u
, r
, "Unable to set new bus name owner %s: %m", new_owner
);
3996 if (s
->type
== SERVICE_DBUS
) {
3998 /* service_enter_running() will figure out what to
4000 if (s
->state
== SERVICE_RUNNING
)
4001 service_enter_running(s
, SERVICE_SUCCESS
);
4002 else if (s
->state
== SERVICE_START
&& new_owner
)
4003 service_enter_start_post(s
);
4005 } else if (new_owner
&&
4013 _cleanup_(sd_bus_creds_unrefp
) sd_bus_creds
*creds
= NULL
;
4016 /* Try to acquire PID from bus service */
4018 r
= sd_bus_get_name_creds(u
->manager
->api_bus
, name
, SD_BUS_CREDS_PID
, &creds
);
4020 r
= sd_bus_creds_get_pid(creds
, &pid
);
4022 log_unit_debug(u
, "D-Bus name %s is now owned by process " PID_FMT
, name
, pid
);
4024 service_set_main_pid(s
, pid
);
4025 unit_watch_pid(UNIT(s
), pid
, false);
4030 int service_set_socket_fd(Service
*s
, int fd
, Socket
*sock
, bool selinux_context_net
) {
4031 _cleanup_free_
char *peer
= NULL
;
4037 /* This is called by the socket code when instantiating a new service for a stream socket and the socket needs
4038 * to be configured. We take ownership of the passed fd on success. */
4040 if (UNIT(s
)->load_state
!= UNIT_LOADED
)
4043 if (s
->socket_fd
>= 0)
4046 if (s
->state
!= SERVICE_DEAD
)
4049 if (getpeername_pretty(fd
, true, &peer
) >= 0) {
4051 if (UNIT(s
)->description
) {
4052 _cleanup_free_
char *a
;
4054 a
= strjoin(UNIT(s
)->description
, " (", peer
, ")");
4058 r
= unit_set_description(UNIT(s
), a
);
4060 r
= unit_set_description(UNIT(s
), peer
);
4066 r
= unit_add_two_dependencies(UNIT(sock
), UNIT_BEFORE
, UNIT_TRIGGERS
, UNIT(s
), false, UNIT_DEPENDENCY_IMPLICIT
);
4071 s
->socket_fd_selinux_context_net
= selinux_context_net
;
4073 unit_ref_set(&s
->accept_socket
, UNIT(s
), UNIT(sock
));
4077 static void service_reset_failed(Unit
*u
) {
4078 Service
*s
= SERVICE(u
);
4082 if (s
->state
== SERVICE_FAILED
)
4083 service_set_state(s
, SERVICE_DEAD
);
4085 s
->result
= SERVICE_SUCCESS
;
4086 s
->reload_result
= SERVICE_SUCCESS
;
4088 s
->flush_n_restarts
= false;
4091 static int service_kill(Unit
*u
, KillWho who
, int signo
, sd_bus_error
*error
) {
4092 Service
*s
= SERVICE(u
);
4096 return unit_kill_common(u
, who
, signo
, s
->main_pid
, s
->control_pid
, error
);
4099 static int service_main_pid(Unit
*u
) {
4100 Service
*s
= SERVICE(u
);
4107 static int service_control_pid(Unit
*u
) {
4108 Service
*s
= SERVICE(u
);
4112 return s
->control_pid
;
4115 static bool service_needs_console(Unit
*u
) {
4116 Service
*s
= SERVICE(u
);
4120 /* We provide our own implementation of this here, instead of relying of the generic implementation
4121 * unit_needs_console() provides, since we want to return false if we are in SERVICE_EXITED state. */
4123 if (!exec_context_may_touch_console(&s
->exec_context
))
4126 return IN_SET(s
->state
,
4133 SERVICE_STOP_WATCHDOG
,
4134 SERVICE_STOP_SIGTERM
,
4135 SERVICE_STOP_SIGKILL
,
4137 SERVICE_FINAL_SIGTERM
,
4138 SERVICE_FINAL_SIGKILL
);
4141 static int service_exit_status(Unit
*u
) {
4142 Service
*s
= SERVICE(u
);
4146 if (s
->main_exec_status
.pid
<= 0 ||
4147 !dual_timestamp_is_set(&s
->main_exec_status
.exit_timestamp
))
4150 if (s
->main_exec_status
.code
!= CLD_EXITED
)
4153 return s
->main_exec_status
.status
;
4156 static const char* const service_restart_table
[_SERVICE_RESTART_MAX
] = {
4157 [SERVICE_RESTART_NO
] = "no",
4158 [SERVICE_RESTART_ON_SUCCESS
] = "on-success",
4159 [SERVICE_RESTART_ON_FAILURE
] = "on-failure",
4160 [SERVICE_RESTART_ON_ABNORMAL
] = "on-abnormal",
4161 [SERVICE_RESTART_ON_WATCHDOG
] = "on-watchdog",
4162 [SERVICE_RESTART_ON_ABORT
] = "on-abort",
4163 [SERVICE_RESTART_ALWAYS
] = "always",
4166 DEFINE_STRING_TABLE_LOOKUP(service_restart
, ServiceRestart
);
4168 static const char* const service_type_table
[_SERVICE_TYPE_MAX
] = {
4169 [SERVICE_SIMPLE
] = "simple",
4170 [SERVICE_FORKING
] = "forking",
4171 [SERVICE_ONESHOT
] = "oneshot",
4172 [SERVICE_DBUS
] = "dbus",
4173 [SERVICE_NOTIFY
] = "notify",
4174 [SERVICE_IDLE
] = "idle",
4175 [SERVICE_EXEC
] = "exec",
4178 DEFINE_STRING_TABLE_LOOKUP(service_type
, ServiceType
);
4180 static const char* const service_exec_command_table
[_SERVICE_EXEC_COMMAND_MAX
] = {
4181 [SERVICE_EXEC_START_PRE
] = "ExecStartPre",
4182 [SERVICE_EXEC_START
] = "ExecStart",
4183 [SERVICE_EXEC_START_POST
] = "ExecStartPost",
4184 [SERVICE_EXEC_RELOAD
] = "ExecReload",
4185 [SERVICE_EXEC_STOP
] = "ExecStop",
4186 [SERVICE_EXEC_STOP_POST
] = "ExecStopPost",
4189 DEFINE_STRING_TABLE_LOOKUP(service_exec_command
, ServiceExecCommand
);
4191 static const char* const service_exec_ex_command_table
[_SERVICE_EXEC_COMMAND_MAX
] = {
4192 [SERVICE_EXEC_START_PRE
] = "ExecStartPreEx",
4193 [SERVICE_EXEC_START
] = "ExecStartEx",
4194 [SERVICE_EXEC_START_POST
] = "ExecStartPostEx",
4197 DEFINE_STRING_TABLE_LOOKUP(service_exec_ex_command
, ServiceExecCommand
);
4199 static const char* const notify_state_table
[_NOTIFY_STATE_MAX
] = {
4200 [NOTIFY_UNKNOWN
] = "unknown",
4201 [NOTIFY_READY
] = "ready",
4202 [NOTIFY_RELOADING
] = "reloading",
4203 [NOTIFY_STOPPING
] = "stopping",
4206 DEFINE_STRING_TABLE_LOOKUP(notify_state
, NotifyState
);
4208 static const char* const service_result_table
[_SERVICE_RESULT_MAX
] = {
4209 [SERVICE_SUCCESS
] = "success",
4210 [SERVICE_FAILURE_RESOURCES
] = "resources",
4211 [SERVICE_FAILURE_PROTOCOL
] = "protocol",
4212 [SERVICE_FAILURE_TIMEOUT
] = "timeout",
4213 [SERVICE_FAILURE_EXIT_CODE
] = "exit-code",
4214 [SERVICE_FAILURE_SIGNAL
] = "signal",
4215 [SERVICE_FAILURE_CORE_DUMP
] = "core-dump",
4216 [SERVICE_FAILURE_WATCHDOG
] = "watchdog",
4217 [SERVICE_FAILURE_START_LIMIT_HIT
] = "start-limit-hit",
4218 [SERVICE_FAILURE_OOM_KILL
] = "oom-kill",
4221 DEFINE_STRING_TABLE_LOOKUP(service_result
, ServiceResult
);
4223 const UnitVTable service_vtable
= {
4224 .object_size
= sizeof(Service
),
4225 .exec_context_offset
= offsetof(Service
, exec_context
),
4226 .cgroup_context_offset
= offsetof(Service
, cgroup_context
),
4227 .kill_context_offset
= offsetof(Service
, kill_context
),
4228 .exec_runtime_offset
= offsetof(Service
, exec_runtime
),
4229 .dynamic_creds_offset
= offsetof(Service
, dynamic_creds
),
4235 .private_section
= "Service",
4237 .can_transient
= true,
4238 .can_delegate
= true,
4240 .init
= service_init
,
4241 .done
= service_done
,
4242 .load
= service_load
,
4243 .release_resources
= service_release_resources
,
4245 .coldplug
= service_coldplug
,
4247 .dump
= service_dump
,
4249 .start
= service_start
,
4250 .stop
= service_stop
,
4251 .reload
= service_reload
,
4253 .can_reload
= service_can_reload
,
4255 .kill
= service_kill
,
4257 .serialize
= service_serialize
,
4258 .deserialize_item
= service_deserialize_item
,
4260 .active_state
= service_active_state
,
4261 .sub_state_to_string
= service_sub_state_to_string
,
4263 .will_restart
= service_will_restart
,
4265 .may_gc
= service_may_gc
,
4267 .sigchld_event
= service_sigchld_event
,
4269 .reset_failed
= service_reset_failed
,
4271 .notify_cgroup_empty
= service_notify_cgroup_empty_event
,
4272 .notify_cgroup_oom
= service_notify_cgroup_oom_event
,
4273 .notify_message
= service_notify_message
,
4275 .main_pid
= service_main_pid
,
4276 .control_pid
= service_control_pid
,
4278 .bus_name_owner_change
= service_bus_name_owner_change
,
4280 .bus_vtable
= bus_service_vtable
,
4281 .bus_set_property
= bus_service_set_property
,
4282 .bus_commit_properties
= bus_service_commit_properties
,
4284 .get_timeout
= service_get_timeout
,
4285 .needs_console
= service_needs_console
,
4286 .exit_status
= service_exit_status
,
4288 .status_message_formats
= {
4289 .starting_stopping
= {
4290 [0] = "Starting %s...",
4291 [1] = "Stopping %s...",
4293 .finished_start_job
= {
4294 [JOB_DONE
] = "Started %s.",
4295 [JOB_FAILED
] = "Failed to start %s.",
4297 .finished_stop_job
= {
4298 [JOB_DONE
] = "Stopped %s.",
4299 [JOB_FAILED
] = "Stopped (with error) %s.",