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 if (fs
->event_source
) {
324 sd_event_source_set_enabled(fs
->event_source
, SD_EVENT_OFF
);
325 sd_event_source_unref(fs
->event_source
);
333 static void service_release_fd_store(Service
*s
) {
336 if (s
->n_keep_fd_store
> 0)
339 log_unit_debug(UNIT(s
), "Releasing all stored fds");
341 service_fd_store_unlink(s
->fd_store
);
343 assert(s
->n_fd_store
== 0);
346 static void service_release_resources(Unit
*u
) {
347 Service
*s
= SERVICE(u
);
351 if (!s
->fd_store
&& s
->stdin_fd
< 0 && s
->stdout_fd
< 0 && s
->stderr_fd
< 0)
354 log_unit_debug(u
, "Releasing resources.");
356 s
->stdin_fd
= safe_close(s
->stdin_fd
);
357 s
->stdout_fd
= safe_close(s
->stdout_fd
);
358 s
->stderr_fd
= safe_close(s
->stderr_fd
);
360 service_release_fd_store(s
);
363 static void service_done(Unit
*u
) {
364 Service
*s
= SERVICE(u
);
368 s
->pid_file
= mfree(s
->pid_file
);
369 s
->status_text
= mfree(s
->status_text
);
371 s
->exec_runtime
= exec_runtime_unref(s
->exec_runtime
, false);
372 exec_command_free_array(s
->exec_command
, _SERVICE_EXEC_COMMAND_MAX
);
373 s
->control_command
= NULL
;
374 s
->main_command
= NULL
;
376 dynamic_creds_unref(&s
->dynamic_creds
);
378 exit_status_set_free(&s
->restart_prevent_status
);
379 exit_status_set_free(&s
->restart_force_status
);
380 exit_status_set_free(&s
->success_status
);
382 /* This will leak a process, but at least no memory or any of
384 service_unwatch_main_pid(s
);
385 service_unwatch_control_pid(s
);
386 service_unwatch_pid_file(s
);
389 unit_unwatch_bus_name(u
, s
->bus_name
);
390 s
->bus_name
= mfree(s
->bus_name
);
393 s
->bus_name_owner
= mfree(s
->bus_name_owner
);
395 s
->usb_function_descriptors
= mfree(s
->usb_function_descriptors
);
396 s
->usb_function_strings
= mfree(s
->usb_function_strings
);
398 service_close_socket_fd(s
);
399 s
->peer
= socket_peer_unref(s
->peer
);
401 unit_ref_unset(&s
->accept_socket
);
403 service_stop_watchdog(s
);
405 s
->timer_event_source
= sd_event_source_unref(s
->timer_event_source
);
406 s
->exec_fd_event_source
= sd_event_source_unref(s
->exec_fd_event_source
);
408 service_release_resources(u
);
411 static int on_fd_store_io(sd_event_source
*e
, int fd
, uint32_t revents
, void *userdata
) {
412 ServiceFDStore
*fs
= userdata
;
417 /* If we get either EPOLLHUP or EPOLLERR, it's time to remove this entry from the fd store */
418 log_unit_debug(UNIT(fs
->service
),
419 "Received %s on stored fd %d (%s), closing.",
420 revents
& EPOLLERR
? "EPOLLERR" : "EPOLLHUP",
421 fs
->fd
, strna(fs
->fdname
));
422 service_fd_store_unlink(fs
);
426 static int service_add_fd_store(Service
*s
, int fd
, const char *name
) {
430 /* fd is always consumed if we return >= 0 */
435 if (s
->n_fd_store
>= s
->n_fd_store_max
)
436 return -EXFULL
; /* Our store is full.
437 * Use this errno rather than E[NM]FILE to distinguish from
438 * the case where systemd itself hits the file limit. */
440 LIST_FOREACH(fd_store
, fs
, s
->fd_store
) {
441 r
= same_fd(fs
->fd
, fd
);
446 return 0; /* fd already included */
450 fs
= new0(ServiceFDStore
, 1);
456 fs
->fdname
= strdup(name
?: "stored");
462 r
= sd_event_add_io(UNIT(s
)->manager
->event
, &fs
->event_source
, fd
, 0, on_fd_store_io
, fs
);
463 if (r
< 0 && r
!= -EPERM
) { /* EPERM indicates fds that aren't pollable, which is OK */
468 (void) sd_event_source_set_description(fs
->event_source
, "service-fd-store");
470 LIST_PREPEND(fd_store
, s
->fd_store
, fs
);
473 return 1; /* fd newly stored */
476 static int service_add_fd_store_set(Service
*s
, FDSet
*fds
, const char *name
) {
481 while (fdset_size(fds
) > 0) {
482 _cleanup_close_
int fd
= -1;
484 fd
= fdset_steal_first(fds
);
488 r
= service_add_fd_store(s
, fd
, name
);
490 return log_unit_warning_errno(UNIT(s
), r
,
491 "Cannot store more fds than FileDescriptorStoreMax=%u, closing remaining.",
494 return log_unit_error_errno(UNIT(s
), r
, "Failed to add fd to store: %m");
496 log_unit_debug(UNIT(s
), "Added fd %u (%s) to fd store.", fd
, strna(name
));
503 static void service_remove_fd_store(Service
*s
, const char *name
) {
504 ServiceFDStore
*fs
, *n
;
509 LIST_FOREACH_SAFE(fd_store
, fs
, n
, s
->fd_store
) {
510 if (!streq(fs
->fdname
, name
))
513 log_unit_debug(UNIT(s
), "Got explicit request to remove fd %i (%s), closing.", fs
->fd
, name
);
514 service_fd_store_unlink(fs
);
518 static int service_arm_timer(Service
*s
, usec_t usec
) {
523 if (s
->timer_event_source
) {
524 r
= sd_event_source_set_time(s
->timer_event_source
, usec
);
528 return sd_event_source_set_enabled(s
->timer_event_source
, SD_EVENT_ONESHOT
);
531 if (usec
== USEC_INFINITY
)
534 r
= sd_event_add_time(
535 UNIT(s
)->manager
->event
,
536 &s
->timer_event_source
,
539 service_dispatch_timer
, s
);
543 (void) sd_event_source_set_description(s
->timer_event_source
, "service-timer");
548 static int service_verify(Service
*s
) {
551 if (UNIT(s
)->load_state
!= UNIT_LOADED
)
554 if (!s
->exec_command
[SERVICE_EXEC_START
] && !s
->exec_command
[SERVICE_EXEC_STOP
]
555 && UNIT(s
)->success_action
== EMERGENCY_ACTION_NONE
) {
556 /* FailureAction= only makes sense if one of the start or stop commands is specified.
557 * SuccessAction= will be executed unconditionally if no commands are specified. Hence,
558 * either a command or SuccessAction= are required. */
560 log_unit_error(UNIT(s
), "Service has no ExecStart=, ExecStop=, or SuccessAction=. Refusing.");
564 if (s
->type
!= SERVICE_ONESHOT
&& !s
->exec_command
[SERVICE_EXEC_START
]) {
565 log_unit_error(UNIT(s
), "Service has no ExecStart= setting, which is only allowed for Type=oneshot services. Refusing.");
569 if (!s
->remain_after_exit
&& !s
->exec_command
[SERVICE_EXEC_START
] && UNIT(s
)->success_action
== EMERGENCY_ACTION_NONE
) {
570 log_unit_error(UNIT(s
), "Service has no ExecStart= and no SuccessAction= settings and does not have RemainAfterExit=yes set. Refusing.");
574 if (s
->type
!= SERVICE_ONESHOT
&& s
->exec_command
[SERVICE_EXEC_START
]->command_next
) {
575 log_unit_error(UNIT(s
), "Service has more than one ExecStart= setting, which is only allowed for Type=oneshot services. Refusing.");
579 if (s
->type
== SERVICE_ONESHOT
&& s
->restart
!= SERVICE_RESTART_NO
) {
580 log_unit_error(UNIT(s
), "Service has Restart= setting other than no, which isn't allowed for Type=oneshot services. Refusing.");
584 if (s
->type
== SERVICE_ONESHOT
&& !exit_status_set_is_empty(&s
->restart_force_status
)) {
585 log_unit_error(UNIT(s
), "Service has RestartForceStatus= set, which isn't allowed for Type=oneshot services. Refusing.");
589 if (s
->type
== SERVICE_DBUS
&& !s
->bus_name
) {
590 log_unit_error(UNIT(s
), "Service is of type D-Bus but no D-Bus service name has been specified. Refusing.");
594 if (s
->bus_name
&& s
->type
!= SERVICE_DBUS
)
595 log_unit_warning(UNIT(s
), "Service has a D-Bus service name specified, but is not of type dbus. Ignoring.");
597 if (s
->exec_context
.pam_name
&& !IN_SET(s
->kill_context
.kill_mode
, KILL_CONTROL_GROUP
, KILL_MIXED
)) {
598 log_unit_error(UNIT(s
), "Service has PAM enabled. Kill mode must be set to 'control-group' or 'mixed'. Refusing.");
602 if (s
->usb_function_descriptors
&& !s
->usb_function_strings
)
603 log_unit_warning(UNIT(s
), "Service has USBFunctionDescriptors= setting, but no USBFunctionStrings=. Ignoring.");
605 if (!s
->usb_function_descriptors
&& s
->usb_function_strings
)
606 log_unit_warning(UNIT(s
), "Service has USBFunctionStrings= setting, but no USBFunctionDescriptors=. Ignoring.");
608 if (s
->runtime_max_usec
!= USEC_INFINITY
&& s
->type
== SERVICE_ONESHOT
)
609 log_unit_warning(UNIT(s
), "MaxRuntimeSec= has no effect in combination with Type=oneshot. Ignoring.");
614 static int service_add_default_dependencies(Service
*s
) {
619 if (!UNIT(s
)->default_dependencies
)
622 /* Add a number of automatic dependencies useful for the
623 * majority of services. */
625 if (MANAGER_IS_SYSTEM(UNIT(s
)->manager
)) {
626 /* First, pull in the really early boot stuff, and
627 * require it, so that we fail if we can't acquire
630 r
= unit_add_two_dependencies_by_name(UNIT(s
), UNIT_AFTER
, UNIT_REQUIRES
, SPECIAL_SYSINIT_TARGET
, true, UNIT_DEPENDENCY_DEFAULT
);
635 /* In the --user instance there's no sysinit.target,
636 * in that case require basic.target instead. */
638 r
= unit_add_dependency_by_name(UNIT(s
), UNIT_REQUIRES
, SPECIAL_BASIC_TARGET
, true, UNIT_DEPENDENCY_DEFAULT
);
643 /* Second, if the rest of the base system is in the same
644 * transaction, order us after it, but do not pull it in or
645 * even require it. */
646 r
= unit_add_dependency_by_name(UNIT(s
), UNIT_AFTER
, SPECIAL_BASIC_TARGET
, true, UNIT_DEPENDENCY_DEFAULT
);
650 /* Third, add us in for normal shutdown. */
651 return unit_add_two_dependencies_by_name(UNIT(s
), UNIT_BEFORE
, UNIT_CONFLICTS
, SPECIAL_SHUTDOWN_TARGET
, true, UNIT_DEPENDENCY_DEFAULT
);
654 static void service_fix_output(Service
*s
) {
657 /* If nothing has been explicitly configured, patch default output in. If input is socket/tty we avoid this
658 * however, since in that case we want output to default to the same place as we read input from. */
660 if (s
->exec_context
.std_error
== EXEC_OUTPUT_INHERIT
&&
661 s
->exec_context
.std_output
== EXEC_OUTPUT_INHERIT
&&
662 s
->exec_context
.std_input
== EXEC_INPUT_NULL
)
663 s
->exec_context
.std_error
= UNIT(s
)->manager
->default_std_error
;
665 if (s
->exec_context
.std_output
== EXEC_OUTPUT_INHERIT
&&
666 s
->exec_context
.std_input
== EXEC_INPUT_NULL
)
667 s
->exec_context
.std_output
= UNIT(s
)->manager
->default_std_output
;
669 if (s
->exec_context
.std_input
== EXEC_INPUT_NULL
&&
670 s
->exec_context
.stdin_data_size
> 0)
671 s
->exec_context
.std_input
= EXEC_INPUT_DATA
;
674 static int service_setup_bus_name(Service
*s
) {
682 r
= unit_add_dependency_by_name(UNIT(s
), UNIT_REQUIRES
, SPECIAL_DBUS_SOCKET
, true, UNIT_DEPENDENCY_FILE
);
684 return log_unit_error_errno(UNIT(s
), r
, "Failed to add dependency on " SPECIAL_DBUS_SOCKET
": %m");
686 /* We always want to be ordered against dbus.socket if both are in the transaction. */
687 r
= unit_add_dependency_by_name(UNIT(s
), UNIT_AFTER
, SPECIAL_DBUS_SOCKET
, true, UNIT_DEPENDENCY_FILE
);
689 return log_unit_error_errno(UNIT(s
), r
, "Failed to add dependency on " SPECIAL_DBUS_SOCKET
": %m");
691 r
= unit_watch_bus_name(UNIT(s
), s
->bus_name
);
693 return log_unit_error_errno(UNIT(s
), r
, "Two services allocated for the same bus name %s, refusing operation.", s
->bus_name
);
695 return log_unit_error_errno(UNIT(s
), r
, "Cannot watch bus name %s: %m", s
->bus_name
);
700 static int service_add_extras(Service
*s
) {
705 if (s
->type
== _SERVICE_TYPE_INVALID
) {
706 /* Figure out a type automatically */
708 s
->type
= SERVICE_DBUS
;
709 else if (s
->exec_command
[SERVICE_EXEC_START
])
710 s
->type
= SERVICE_SIMPLE
;
712 s
->type
= SERVICE_ONESHOT
;
715 /* Oneshot services have disabled start timeout by default */
716 if (s
->type
== SERVICE_ONESHOT
&& !s
->start_timeout_defined
)
717 s
->timeout_start_usec
= USEC_INFINITY
;
719 service_fix_output(s
);
721 r
= unit_patch_contexts(UNIT(s
));
725 r
= unit_add_exec_dependencies(UNIT(s
), &s
->exec_context
);
729 r
= unit_set_default_slice(UNIT(s
));
733 /* If the service needs the notify socket, let's enable it automatically. */
734 if (s
->notify_access
== NOTIFY_NONE
&&
735 (s
->type
== SERVICE_NOTIFY
|| s
->watchdog_usec
> 0 || s
->n_fd_store_max
> 0))
736 s
->notify_access
= NOTIFY_MAIN
;
738 /* If no OOM policy was explicitly set, then default to the configure default OOM policy. Except when
739 * delegation is on, in that case it we assume the payload knows better what to do and can process
740 * things in a more focussed way. */
741 if (s
->oom_policy
< 0)
742 s
->oom_policy
= s
->cgroup_context
.delegate
? OOM_CONTINUE
: UNIT(s
)->manager
->default_oom_policy
;
744 /* Let the kernel do the killing if that's requested. */
745 s
->cgroup_context
.memory_oom_group
= s
->oom_policy
== OOM_KILL
;
747 r
= service_add_default_dependencies(s
);
751 r
= service_setup_bus_name(s
);
758 static int service_load(Unit
*u
) {
759 Service
*s
= SERVICE(u
);
764 /* Load a .service file */
765 r
= unit_load_fragment(u
);
769 /* Still nothing found? Then let's give up */
770 if (u
->load_state
== UNIT_STUB
)
773 /* This is a new unit? Then let's add in some extras */
774 if (u
->load_state
== UNIT_LOADED
) {
776 /* We were able to load something, then let's add in
777 * the dropin directories. */
778 r
= unit_load_dropin(u
);
782 /* This is a new unit? Then let's add in some
784 r
= service_add_extras(s
);
789 return service_verify(s
);
792 static void service_dump(Unit
*u
, FILE *f
, const char *prefix
) {
793 char buf_restart
[FORMAT_TIMESPAN_MAX
], buf_start
[FORMAT_TIMESPAN_MAX
], buf_stop
[FORMAT_TIMESPAN_MAX
];
794 char buf_runtime
[FORMAT_TIMESPAN_MAX
], buf_watchdog
[FORMAT_TIMESPAN_MAX
], buf_abort
[FORMAT_TIMESPAN_MAX
];
795 ServiceExecCommand c
;
796 Service
*s
= SERVICE(u
);
801 prefix
= strempty(prefix
);
802 prefix2
= strjoina(prefix
, "\t");
805 "%sService State: %s\n"
807 "%sReload Result: %s\n"
808 "%sPermissionsStartOnly: %s\n"
809 "%sRootDirectoryStartOnly: %s\n"
810 "%sRemainAfterExit: %s\n"
811 "%sGuessMainPID: %s\n"
814 "%sNotifyAccess: %s\n"
815 "%sNotifyState: %s\n"
817 prefix
, service_state_to_string(s
->state
),
818 prefix
, service_result_to_string(s
->result
),
819 prefix
, service_result_to_string(s
->reload_result
),
820 prefix
, yes_no(s
->permissions_start_only
),
821 prefix
, yes_no(s
->root_directory_start_only
),
822 prefix
, yes_no(s
->remain_after_exit
),
823 prefix
, yes_no(s
->guess_main_pid
),
824 prefix
, service_type_to_string(s
->type
),
825 prefix
, service_restart_to_string(s
->restart
),
826 prefix
, notify_access_to_string(s
->notify_access
),
827 prefix
, notify_state_to_string(s
->notify_state
),
828 prefix
, oom_policy_to_string(s
->oom_policy
));
830 if (s
->control_pid
> 0)
832 "%sControl PID: "PID_FMT
"\n",
833 prefix
, s
->control_pid
);
837 "%sMain PID: "PID_FMT
"\n"
838 "%sMain PID Known: %s\n"
839 "%sMain PID Alien: %s\n",
841 prefix
, yes_no(s
->main_pid_known
),
842 prefix
, yes_no(s
->main_pid_alien
));
847 prefix
, s
->pid_file
);
852 "%sBus Name Good: %s\n",
854 prefix
, yes_no(s
->bus_name_good
));
856 if (UNIT_ISSET(s
->accept_socket
))
858 "%sAccept Socket: %s\n",
859 prefix
, UNIT_DEREF(s
->accept_socket
)->id
);
863 "%sTimeoutStartSec: %s\n"
864 "%sTimeoutStopSec: %s\n",
865 prefix
, format_timespan(buf_restart
, sizeof(buf_restart
), s
->restart_usec
, USEC_PER_SEC
),
866 prefix
, format_timespan(buf_start
, sizeof(buf_start
), s
->timeout_start_usec
, USEC_PER_SEC
),
867 prefix
, format_timespan(buf_stop
, sizeof(buf_stop
), s
->timeout_stop_usec
, USEC_PER_SEC
));
869 if (s
->timeout_abort_set
)
871 "%sTimeoutAbortSec: %s\n",
872 prefix
, format_timespan(buf_abort
, sizeof(buf_abort
), s
->timeout_abort_usec
, USEC_PER_SEC
));
875 "%sRuntimeMaxSec: %s\n"
876 "%sWatchdogSec: %s\n",
877 prefix
, format_timespan(buf_runtime
, sizeof(buf_runtime
), s
->runtime_max_usec
, USEC_PER_SEC
),
878 prefix
, format_timespan(buf_watchdog
, sizeof(buf_watchdog
), s
->watchdog_usec
, USEC_PER_SEC
));
880 kill_context_dump(&s
->kill_context
, f
, prefix
);
881 exec_context_dump(&s
->exec_context
, f
, prefix
);
883 for (c
= 0; c
< _SERVICE_EXEC_COMMAND_MAX
; c
++) {
885 if (!s
->exec_command
[c
])
888 fprintf(f
, "%s-> %s:\n",
889 prefix
, service_exec_command_to_string(c
));
891 exec_command_dump_list(s
->exec_command
[c
], f
, prefix2
);
895 fprintf(f
, "%sStatus Text: %s\n",
896 prefix
, s
->status_text
);
898 if (s
->n_fd_store_max
> 0)
900 "%sFile Descriptor Store Max: %u\n"
901 "%sFile Descriptor Store Current: %zu\n",
902 prefix
, s
->n_fd_store_max
,
903 prefix
, s
->n_fd_store
);
905 cgroup_context_dump(&s
->cgroup_context
, f
, prefix
);
908 static int service_is_suitable_main_pid(Service
*s
, pid_t pid
, int prio
) {
912 assert(pid_is_valid(pid
));
914 /* Checks whether the specified PID is suitable as main PID for this service. returns negative if not, 0 if the
915 * PID is questionnable but should be accepted if the source of configuration is trusted. > 0 if the PID is
918 if (pid
== getpid_cached() || pid
== 1) {
919 log_unit_full(UNIT(s
), prio
, 0, "New main PID "PID_FMT
" is the manager, refusing.", pid
);
923 if (pid
== s
->control_pid
) {
924 log_unit_full(UNIT(s
), prio
, 0, "New main PID "PID_FMT
" is the control process, refusing.", pid
);
928 if (!pid_is_alive(pid
)) {
929 log_unit_full(UNIT(s
), prio
, 0, "New main PID "PID_FMT
" does not exist or is a zombie.", pid
);
933 owner
= manager_get_unit_by_pid(UNIT(s
)->manager
, pid
);
934 if (owner
== UNIT(s
)) {
935 log_unit_debug(UNIT(s
), "New main PID "PID_FMT
" belongs to service, we are happy.", pid
);
936 return 1; /* Yay, it's definitely a good PID */
939 return 0; /* Hmm it's a suspicious PID, let's accept it if configuration source is trusted */
942 static int service_load_pid_file(Service
*s
, bool may_warn
) {
943 char procfs
[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)];
944 bool questionable_pid_file
= false;
945 _cleanup_free_
char *k
= NULL
;
946 _cleanup_close_
int fd
= -1;
955 prio
= may_warn
? LOG_INFO
: LOG_DEBUG
;
957 fd
= chase_symlinks(s
->pid_file
, NULL
, CHASE_OPEN
|CHASE_SAFE
, NULL
);
958 if (fd
== -ENOLINK
) {
959 log_unit_full(UNIT(s
), LOG_DEBUG
, fd
, "Potentially unsafe symlink chain, will now retry with relaxed checks: %s", s
->pid_file
);
961 questionable_pid_file
= true;
963 fd
= chase_symlinks(s
->pid_file
, NULL
, CHASE_OPEN
, NULL
);
966 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
));
968 /* 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. */
969 xsprintf(procfs
, "/proc/self/fd/%i", fd
);
970 r
= read_one_line_file(procfs
, &k
);
972 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
);
974 r
= parse_pid(k
, &pid
);
976 return log_unit_full(UNIT(s
), prio
, r
, "Failed to parse PID from file %s: %m", s
->pid_file
);
978 if (s
->main_pid_known
&& pid
== s
->main_pid
)
981 r
= service_is_suitable_main_pid(s
, pid
, prio
);
987 if (questionable_pid_file
) {
988 log_unit_error(UNIT(s
), "Refusing to accept PID outside of service control group, acquired through unsafe symlink chain: %s", s
->pid_file
);
992 /* Hmm, it's not clear if the new main PID is safe. Let's allow this if the PID file is owned by root */
994 if (fstat(fd
, &st
) < 0)
995 return log_unit_error_errno(UNIT(s
), errno
, "Failed to fstat() PID file O_PATH fd: %m");
997 if (st
.st_uid
!= 0) {
998 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
);
1002 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
);
1005 if (s
->main_pid_known
) {
1006 log_unit_debug(UNIT(s
), "Main PID changing: "PID_FMT
" -> "PID_FMT
, s
->main_pid
, pid
);
1008 service_unwatch_main_pid(s
);
1009 s
->main_pid_known
= false;
1011 log_unit_debug(UNIT(s
), "Main PID loaded: "PID_FMT
, pid
);
1013 r
= service_set_main_pid(s
, pid
);
1017 r
= unit_watch_pid(UNIT(s
), pid
, false);
1018 if (r
< 0) /* FIXME: we need to do something here */
1019 return log_unit_warning_errno(UNIT(s
), r
, "Failed to watch PID "PID_FMT
" for service: %m", pid
);
1024 static void service_search_main_pid(Service
*s
) {
1030 /* If we know it anyway, don't ever fallback to unreliable
1032 if (s
->main_pid_known
)
1035 if (!s
->guess_main_pid
)
1038 assert(s
->main_pid
<= 0);
1040 if (unit_search_main_pid(UNIT(s
), &pid
) < 0)
1043 log_unit_debug(UNIT(s
), "Main PID guessed: "PID_FMT
, pid
);
1044 if (service_set_main_pid(s
, pid
) < 0)
1047 r
= unit_watch_pid(UNIT(s
), pid
, false);
1049 /* FIXME: we need to do something here */
1050 log_unit_warning_errno(UNIT(s
), r
, "Failed to watch PID "PID_FMT
" from: %m", pid
);
1053 static void service_set_state(Service
*s
, ServiceState state
) {
1054 ServiceState old_state
;
1055 const UnitActiveState
*table
;
1059 if (s
->state
!= state
)
1060 bus_unit_send_pending_change_signal(UNIT(s
), false);
1062 table
= s
->type
== SERVICE_IDLE
? state_translation_table_idle
: state_translation_table
;
1064 old_state
= s
->state
;
1067 service_unwatch_pid_file(s
);
1070 SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
,
1073 SERVICE_STOP
, SERVICE_STOP_WATCHDOG
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
1074 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
,
1075 SERVICE_AUTO_RESTART
))
1076 s
->timer_event_source
= sd_event_source_unref(s
->timer_event_source
);
1079 SERVICE_START
, SERVICE_START_POST
,
1080 SERVICE_RUNNING
, SERVICE_RELOAD
,
1081 SERVICE_STOP
, SERVICE_STOP_WATCHDOG
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
1082 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
)) {
1083 service_unwatch_main_pid(s
);
1084 s
->main_command
= NULL
;
1088 SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
,
1090 SERVICE_STOP
, SERVICE_STOP_WATCHDOG
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
1091 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
)) {
1092 service_unwatch_control_pid(s
);
1093 s
->control_command
= NULL
;
1094 s
->control_command_id
= _SERVICE_EXEC_COMMAND_INVALID
;
1097 if (IN_SET(state
, SERVICE_DEAD
, SERVICE_FAILED
, SERVICE_AUTO_RESTART
)) {
1098 unit_unwatch_all_pids(UNIT(s
));
1099 unit_dequeue_rewatch_pids(UNIT(s
));
1103 SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
,
1104 SERVICE_RUNNING
, SERVICE_RELOAD
,
1105 SERVICE_STOP
, SERVICE_STOP_WATCHDOG
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
1106 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
) &&
1107 !(state
== SERVICE_DEAD
&& UNIT(s
)->job
))
1108 service_close_socket_fd(s
);
1110 if (state
!= SERVICE_START
)
1111 s
->exec_fd_event_source
= sd_event_source_unref(s
->exec_fd_event_source
);
1113 if (!IN_SET(state
, SERVICE_START_POST
, SERVICE_RUNNING
, SERVICE_RELOAD
))
1114 service_stop_watchdog(s
);
1116 /* For the inactive states unit_notify() will trim the cgroup,
1117 * but for exit we have to do that ourselves... */
1118 if (state
== SERVICE_EXITED
&& !MANAGER_IS_RELOADING(UNIT(s
)->manager
))
1119 unit_prune_cgroup(UNIT(s
));
1121 if (old_state
!= state
)
1122 log_unit_debug(UNIT(s
), "Changed %s -> %s", service_state_to_string(old_state
), service_state_to_string(state
));
1124 unit_notify(UNIT(s
), table
[old_state
], table
[state
],
1125 (s
->reload_result
== SERVICE_SUCCESS
? 0 : UNIT_NOTIFY_RELOAD_FAILURE
) |
1126 (s
->will_auto_restart
? UNIT_NOTIFY_WILL_AUTO_RESTART
: 0));
1129 static usec_t
service_coldplug_timeout(Service
*s
) {
1132 switch (s
->deserialized_state
) {
1134 case SERVICE_START_PRE
:
1136 case SERVICE_START_POST
:
1137 case SERVICE_RELOAD
:
1138 return usec_add(UNIT(s
)->state_change_timestamp
.monotonic
, s
->timeout_start_usec
);
1140 case SERVICE_RUNNING
:
1141 return usec_add(UNIT(s
)->active_enter_timestamp
.monotonic
, s
->runtime_max_usec
);
1144 case SERVICE_STOP_SIGTERM
:
1145 case SERVICE_STOP_SIGKILL
:
1146 case SERVICE_STOP_POST
:
1147 case SERVICE_FINAL_SIGTERM
:
1148 case SERVICE_FINAL_SIGKILL
:
1149 return usec_add(UNIT(s
)->state_change_timestamp
.monotonic
, s
->timeout_stop_usec
);
1151 case SERVICE_STOP_WATCHDOG
:
1152 return usec_add(UNIT(s
)->state_change_timestamp
.monotonic
, service_timeout_abort_usec(s
));
1154 case SERVICE_AUTO_RESTART
:
1155 return usec_add(UNIT(s
)->inactive_enter_timestamp
.monotonic
, s
->restart_usec
);
1158 return USEC_INFINITY
;
1162 static int service_coldplug(Unit
*u
) {
1163 Service
*s
= SERVICE(u
);
1167 assert(s
->state
== SERVICE_DEAD
);
1169 if (s
->deserialized_state
== s
->state
)
1172 r
= service_arm_timer(s
, service_coldplug_timeout(s
));
1176 if (s
->main_pid
> 0 &&
1177 pid_is_unwaited(s
->main_pid
) &&
1178 (IN_SET(s
->deserialized_state
,
1179 SERVICE_START
, SERVICE_START_POST
,
1180 SERVICE_RUNNING
, SERVICE_RELOAD
,
1181 SERVICE_STOP
, SERVICE_STOP_WATCHDOG
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
1182 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
))) {
1183 r
= unit_watch_pid(UNIT(s
), s
->main_pid
, false);
1188 if (s
->control_pid
> 0 &&
1189 pid_is_unwaited(s
->control_pid
) &&
1190 IN_SET(s
->deserialized_state
,
1191 SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
,
1193 SERVICE_STOP
, SERVICE_STOP_WATCHDOG
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
1194 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
)) {
1195 r
= unit_watch_pid(UNIT(s
), s
->control_pid
, false);
1200 if (!IN_SET(s
->deserialized_state
, SERVICE_DEAD
, SERVICE_FAILED
, SERVICE_AUTO_RESTART
)) {
1201 (void) unit_enqueue_rewatch_pids(u
);
1202 (void) unit_setup_dynamic_creds(u
);
1203 (void) unit_setup_exec_runtime(u
);
1206 if (IN_SET(s
->deserialized_state
, SERVICE_START_POST
, SERVICE_RUNNING
, SERVICE_RELOAD
))
1207 service_start_watchdog(s
);
1209 if (UNIT_ISSET(s
->accept_socket
)) {
1210 Socket
* socket
= SOCKET(UNIT_DEREF(s
->accept_socket
));
1212 if (socket
->max_connections_per_source
> 0) {
1215 /* Make a best-effort attempt at bumping the connection count */
1216 if (socket_acquire_peer(socket
, s
->socket_fd
, &peer
) > 0) {
1217 socket_peer_unref(s
->peer
);
1223 service_set_state(s
, s
->deserialized_state
);
1227 static int service_collect_fds(
1231 size_t *n_socket_fds
,
1232 size_t *n_storage_fds
) {
1234 _cleanup_strv_free_
char **rfd_names
= NULL
;
1235 _cleanup_free_
int *rfds
= NULL
;
1236 size_t rn_socket_fds
= 0, rn_storage_fds
= 0;
1242 assert(n_socket_fds
);
1243 assert(n_storage_fds
);
1245 if (s
->socket_fd
>= 0) {
1247 /* Pass the per-connection socket */
1252 rfds
[0] = s
->socket_fd
;
1254 rfd_names
= strv_new("connection");
1264 /* Pass all our configured sockets for singleton services */
1266 HASHMAP_FOREACH_KEY(v
, u
, UNIT(s
)->dependencies
[UNIT_TRIGGERED_BY
], i
) {
1267 _cleanup_free_
int *cfds
= NULL
;
1271 if (u
->type
!= UNIT_SOCKET
)
1276 cn_fds
= socket_collect_fds(sock
, &cfds
);
1284 rfds
= TAKE_PTR(cfds
);
1285 rn_socket_fds
= cn_fds
;
1289 t
= reallocarray(rfds
, rn_socket_fds
+ cn_fds
, sizeof(int));
1293 memcpy(t
+ rn_socket_fds
, cfds
, cn_fds
* sizeof(int));
1296 rn_socket_fds
+= cn_fds
;
1299 r
= strv_extend_n(&rfd_names
, socket_fdname(sock
), cn_fds
);
1305 if (s
->n_fd_store
> 0) {
1311 t
= reallocarray(rfds
, rn_socket_fds
+ s
->n_fd_store
, sizeof(int));
1317 nl
= reallocarray(rfd_names
, rn_socket_fds
+ s
->n_fd_store
+ 1, sizeof(char *));
1322 n_fds
= rn_socket_fds
;
1324 LIST_FOREACH(fd_store
, fs
, s
->fd_store
) {
1325 rfds
[n_fds
] = fs
->fd
;
1326 rfd_names
[n_fds
] = strdup(strempty(fs
->fdname
));
1327 if (!rfd_names
[n_fds
])
1334 rfd_names
[n_fds
] = NULL
;
1337 *fds
= TAKE_PTR(rfds
);
1338 *fd_names
= TAKE_PTR(rfd_names
);
1339 *n_socket_fds
= rn_socket_fds
;
1340 *n_storage_fds
= rn_storage_fds
;
1345 static int service_allocate_exec_fd_event_source(
1348 sd_event_source
**ret_event_source
) {
1350 _cleanup_(sd_event_source_unrefp
) sd_event_source
*source
= NULL
;
1355 assert(ret_event_source
);
1357 r
= sd_event_add_io(UNIT(s
)->manager
->event
, &source
, fd
, 0, service_dispatch_exec_io
, s
);
1359 return log_unit_error_errno(UNIT(s
), r
, "Failed to allocate exec_fd event source: %m");
1361 /* This is a bit lower priority than SIGCHLD, as that carries a lot more interesting failure information */
1363 r
= sd_event_source_set_priority(source
, SD_EVENT_PRIORITY_NORMAL
-3);
1365 return log_unit_error_errno(UNIT(s
), r
, "Failed to adjust priority of exec_fd event source: %m");
1367 (void) sd_event_source_set_description(source
, "service event_fd");
1369 r
= sd_event_source_set_io_fd_own(source
, true);
1371 return log_unit_error_errno(UNIT(s
), r
, "Failed to pass ownership of fd to event source: %m");
1373 *ret_event_source
= TAKE_PTR(source
);
1377 static int service_allocate_exec_fd(
1379 sd_event_source
**ret_event_source
,
1382 _cleanup_close_pair_
int p
[2] = { -1, -1 };
1386 assert(ret_event_source
);
1387 assert(ret_exec_fd
);
1389 if (pipe2(p
, O_CLOEXEC
|O_NONBLOCK
) < 0)
1390 return log_unit_error_errno(UNIT(s
), errno
, "Failed to allocate exec_fd pipe: %m");
1392 r
= service_allocate_exec_fd_event_source(s
, p
[0], ret_event_source
);
1397 *ret_exec_fd
= TAKE_FD(p
[1]);
1402 static bool service_exec_needs_notify_socket(Service
*s
, ExecFlags flags
) {
1405 /* Notifications are accepted depending on the process and
1406 * the access setting of the service:
1407 * process: \ access: NONE MAIN EXEC ALL
1408 * main no yes yes yes
1409 * control no no yes yes
1410 * other (forked) no no no yes */
1412 if (flags
& EXEC_IS_CONTROL
)
1413 /* A control process */
1414 return IN_SET(s
->notify_access
, NOTIFY_EXEC
, NOTIFY_ALL
);
1416 /* We only spawn main processes and control processes, so any
1417 * process that is not a control process is a main process */
1418 return s
->notify_access
!= NOTIFY_NONE
;
1421 static int service_spawn(
1428 _cleanup_(exec_params_clear
) ExecParameters exec_params
= {
1435 _cleanup_strv_free_
char **final_env
= NULL
, **our_env
= NULL
, **fd_names
= NULL
;
1436 _cleanup_(sd_event_source_unrefp
) sd_event_source
*exec_fd_source
= NULL
;
1437 size_t n_socket_fds
= 0, n_storage_fds
= 0, n_env
= 0;
1438 _cleanup_close_
int exec_fd
= -1;
1439 _cleanup_free_
int *fds
= NULL
;
1447 r
= unit_prepare_exec(UNIT(s
)); /* This realizes the cgroup, among other things */
1451 if (flags
& EXEC_IS_CONTROL
) {
1452 /* If this is a control process, mask the permissions/chroot application if this is requested. */
1453 if (s
->permissions_start_only
)
1454 exec_params
.flags
&= ~EXEC_APPLY_SANDBOXING
;
1455 if (s
->root_directory_start_only
)
1456 exec_params
.flags
&= ~EXEC_APPLY_CHROOT
;
1459 if ((flags
& EXEC_PASS_FDS
) ||
1460 s
->exec_context
.std_input
== EXEC_INPUT_SOCKET
||
1461 s
->exec_context
.std_output
== EXEC_OUTPUT_SOCKET
||
1462 s
->exec_context
.std_error
== EXEC_OUTPUT_SOCKET
) {
1464 r
= service_collect_fds(s
, &fds
, &fd_names
, &n_socket_fds
, &n_storage_fds
);
1468 log_unit_debug(UNIT(s
), "Passing %zu fds to service", n_socket_fds
+ n_storage_fds
);
1471 if (!FLAGS_SET(flags
, EXEC_IS_CONTROL
) && s
->type
== SERVICE_EXEC
) {
1472 assert(!s
->exec_fd_event_source
);
1474 r
= service_allocate_exec_fd(s
, &exec_fd_source
, &exec_fd
);
1479 r
= service_arm_timer(s
, usec_add(now(CLOCK_MONOTONIC
), timeout
));
1483 our_env
= new0(char*, 10);
1487 if (service_exec_needs_notify_socket(s
, flags
))
1488 if (asprintf(our_env
+ n_env
++, "NOTIFY_SOCKET=%s", UNIT(s
)->manager
->notify_socket
) < 0)
1491 if (s
->main_pid
> 0)
1492 if (asprintf(our_env
+ n_env
++, "MAINPID="PID_FMT
, s
->main_pid
) < 0)
1495 if (MANAGER_IS_USER(UNIT(s
)->manager
))
1496 if (asprintf(our_env
+ n_env
++, "MANAGERPID="PID_FMT
, getpid_cached()) < 0)
1500 if (asprintf(our_env
+ n_env
++, "PIDFILE=%s", s
->pid_file
) < 0)
1503 if (s
->socket_fd
>= 0) {
1504 union sockaddr_union sa
;
1505 socklen_t salen
= sizeof(sa
);
1507 /* If this is a per-connection service instance, let's set $REMOTE_ADDR and $REMOTE_PORT to something
1508 * useful. Note that we do this only when we are still connected at this point in time, which we might
1509 * very well not be. Hence we ignore all errors when retrieving peer information (as that might result
1510 * in ENOTCONN), and just use whate we can use. */
1512 if (getpeername(s
->socket_fd
, &sa
.sa
, &salen
) >= 0 &&
1513 IN_SET(sa
.sa
.sa_family
, AF_INET
, AF_INET6
, AF_VSOCK
)) {
1515 _cleanup_free_
char *addr
= NULL
;
1519 r
= sockaddr_pretty(&sa
.sa
, salen
, true, false, &addr
);
1523 t
= strappend("REMOTE_ADDR=", addr
);
1526 our_env
[n_env
++] = t
;
1528 r
= sockaddr_port(&sa
.sa
, &port
);
1532 if (asprintf(&t
, "REMOTE_PORT=%u", port
) < 0)
1534 our_env
[n_env
++] = t
;
1538 if (flags
& EXEC_SETENV_RESULT
) {
1539 if (asprintf(our_env
+ n_env
++, "SERVICE_RESULT=%s", service_result_to_string(s
->result
)) < 0)
1542 if (s
->main_exec_status
.pid
> 0 &&
1543 dual_timestamp_is_set(&s
->main_exec_status
.exit_timestamp
)) {
1544 if (asprintf(our_env
+ n_env
++, "EXIT_CODE=%s", sigchld_code_to_string(s
->main_exec_status
.code
)) < 0)
1547 if (s
->main_exec_status
.code
== CLD_EXITED
)
1548 r
= asprintf(our_env
+ n_env
++, "EXIT_STATUS=%i", s
->main_exec_status
.status
);
1550 r
= asprintf(our_env
+ n_env
++, "EXIT_STATUS=%s", signal_to_string(s
->main_exec_status
.status
));
1556 r
= unit_set_exec_params(UNIT(s
), &exec_params
);
1560 final_env
= strv_env_merge(2, exec_params
.environment
, our_env
, NULL
);
1564 /* System D-Bus needs nss-systemd disabled, so that we don't deadlock */
1565 SET_FLAG(exec_params
.flags
, EXEC_NSS_BYPASS_BUS
,
1566 MANAGER_IS_SYSTEM(UNIT(s
)->manager
) && unit_has_name(UNIT(s
), SPECIAL_DBUS_SERVICE
));
1568 strv_free_and_replace(exec_params
.environment
, final_env
);
1569 exec_params
.fds
= fds
;
1570 exec_params
.fd_names
= fd_names
;
1571 exec_params
.n_socket_fds
= n_socket_fds
;
1572 exec_params
.n_storage_fds
= n_storage_fds
;
1573 exec_params
.watchdog_usec
= service_get_watchdog_usec(s
);
1574 exec_params
.selinux_context_net
= s
->socket_fd_selinux_context_net
;
1575 if (s
->type
== SERVICE_IDLE
)
1576 exec_params
.idle_pipe
= UNIT(s
)->manager
->idle_pipe
;
1577 exec_params
.stdin_fd
= s
->stdin_fd
;
1578 exec_params
.stdout_fd
= s
->stdout_fd
;
1579 exec_params
.stderr_fd
= s
->stderr_fd
;
1580 exec_params
.exec_fd
= exec_fd
;
1582 r
= exec_spawn(UNIT(s
),
1592 s
->exec_fd_event_source
= TAKE_PTR(exec_fd_source
);
1593 s
->exec_fd_hot
= false;
1595 r
= unit_watch_pid(UNIT(s
), pid
, true);
1604 static int main_pid_good(Service
*s
) {
1607 /* Returns 0 if the pid is dead, > 0 if it is good, < 0 if we don't know */
1609 /* If we know the pid file, then let's just check if it is
1611 if (s
->main_pid_known
) {
1613 /* If it's an alien child let's check if it is still
1615 if (s
->main_pid_alien
&& s
->main_pid
> 0)
1616 return pid_is_alive(s
->main_pid
);
1618 /* .. otherwise assume we'll get a SIGCHLD for it,
1619 * which we really should wait for to collect exit
1620 * status and code */
1621 return s
->main_pid
> 0;
1624 /* We don't know the pid */
1628 static int control_pid_good(Service
*s
) {
1631 /* Returns 0 if the control PID is dead, > 0 if it is good. We never actually return < 0 here, but in order to
1632 * make this function as similar as possible to main_pid_good() and cgroup_good(), we pretend that < 0 also
1633 * means: we can't figure it out. */
1635 return s
->control_pid
> 0;
1638 static int cgroup_good(Service
*s
) {
1643 /* Returns 0 if the cgroup is empty or doesn't exist, > 0 if it is exists and is populated, < 0 if we can't
1646 if (!UNIT(s
)->cgroup_path
)
1649 r
= cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER
, UNIT(s
)->cgroup_path
);
1656 static bool service_shall_restart(Service
*s
) {
1659 /* Don't restart after manual stops */
1660 if (s
->forbid_restart
)
1663 /* Never restart if this is configured as special exception */
1664 if (exit_status_set_test(&s
->restart_prevent_status
, s
->main_exec_status
.code
, s
->main_exec_status
.status
))
1667 /* Restart if the exit code/status are configured as restart triggers */
1668 if (exit_status_set_test(&s
->restart_force_status
, s
->main_exec_status
.code
, s
->main_exec_status
.status
))
1671 switch (s
->restart
) {
1673 case SERVICE_RESTART_NO
:
1676 case SERVICE_RESTART_ALWAYS
:
1679 case SERVICE_RESTART_ON_SUCCESS
:
1680 return s
->result
== SERVICE_SUCCESS
;
1682 case SERVICE_RESTART_ON_FAILURE
:
1683 return s
->result
!= SERVICE_SUCCESS
;
1685 case SERVICE_RESTART_ON_ABNORMAL
:
1686 return !IN_SET(s
->result
, SERVICE_SUCCESS
, SERVICE_FAILURE_EXIT_CODE
);
1688 case SERVICE_RESTART_ON_WATCHDOG
:
1689 return s
->result
== SERVICE_FAILURE_WATCHDOG
;
1691 case SERVICE_RESTART_ON_ABORT
:
1692 return IN_SET(s
->result
, SERVICE_FAILURE_SIGNAL
, SERVICE_FAILURE_CORE_DUMP
);
1695 assert_not_reached("unknown restart setting");
1699 static bool service_will_restart(Unit
*u
) {
1700 Service
*s
= SERVICE(u
);
1704 if (s
->will_auto_restart
)
1706 if (s
->state
== SERVICE_AUTO_RESTART
)
1710 if (UNIT(s
)->job
->type
== JOB_START
)
1716 static void service_enter_dead(Service
*s
, ServiceResult f
, bool allow_restart
) {
1721 /* If there's a stop job queued before we enter the DEAD state, we shouldn't act on Restart=, in order to not
1722 * undo what has already been enqueued. */
1723 if (unit_stop_pending(UNIT(s
)))
1724 allow_restart
= false;
1726 if (s
->result
== SERVICE_SUCCESS
)
1729 unit_log_result(UNIT(s
), s
->result
== SERVICE_SUCCESS
, service_result_to_string(s
->result
));
1731 if (allow_restart
&& service_shall_restart(s
))
1732 s
->will_auto_restart
= true;
1734 /* Make sure service_release_resources() doesn't destroy our FD store, while we are changing through
1735 * SERVICE_FAILED/SERVICE_DEAD before entering into SERVICE_AUTO_RESTART. */
1736 s
->n_keep_fd_store
++;
1738 service_set_state(s
, s
->result
!= SERVICE_SUCCESS
? SERVICE_FAILED
: SERVICE_DEAD
);
1740 if (s
->will_auto_restart
) {
1741 s
->will_auto_restart
= false;
1743 r
= service_arm_timer(s
, usec_add(now(CLOCK_MONOTONIC
), s
->restart_usec
));
1745 s
->n_keep_fd_store
--;
1749 service_set_state(s
, SERVICE_AUTO_RESTART
);
1751 /* If we shan't restart, then flush out the restart counter. But don't do that immediately, so that the
1752 * user can still introspect the counter. Do so on the next start. */
1753 s
->flush_n_restarts
= true;
1755 /* The new state is in effect, let's decrease the fd store ref counter again. Let's also readd us to the GC
1756 * queue, so that the fd store is possibly gc'ed again */
1757 s
->n_keep_fd_store
--;
1758 unit_add_to_gc_queue(UNIT(s
));
1760 /* The next restart might not be a manual stop, hence reset the flag indicating manual stops */
1761 s
->forbid_restart
= false;
1763 /* We want fresh tmpdirs in case service is started again immediately */
1764 s
->exec_runtime
= exec_runtime_unref(s
->exec_runtime
, true);
1766 if (s
->exec_context
.runtime_directory_preserve_mode
== EXEC_PRESERVE_NO
||
1767 (s
->exec_context
.runtime_directory_preserve_mode
== EXEC_PRESERVE_RESTART
&& !service_will_restart(UNIT(s
))))
1768 /* Also, remove the runtime directory */
1769 exec_context_destroy_runtime_directory(&s
->exec_context
, UNIT(s
)->manager
->prefix
[EXEC_DIRECTORY_RUNTIME
]);
1771 /* Get rid of the IPC bits of the user */
1772 unit_unref_uid_gid(UNIT(s
), true);
1774 /* Release the user, and destroy it if we are the only remaining owner */
1775 dynamic_creds_destroy(&s
->dynamic_creds
);
1777 /* Try to delete the pid file. At this point it will be
1778 * out-of-date, and some software might be confused by it, so
1779 * let's remove it. */
1781 (void) unlink(s
->pid_file
);
1783 /* Reset TTY ownership if necessary */
1784 exec_context_revert_tty(&s
->exec_context
);
1789 log_unit_warning_errno(UNIT(s
), r
, "Failed to run install restart timer: %m");
1790 service_enter_dead(s
, SERVICE_FAILURE_RESOURCES
, false);
1793 static void service_enter_stop_post(Service
*s
, ServiceResult f
) {
1797 if (s
->result
== SERVICE_SUCCESS
)
1800 service_unwatch_control_pid(s
);
1801 (void) unit_enqueue_rewatch_pids(UNIT(s
));
1803 s
->control_command
= s
->exec_command
[SERVICE_EXEC_STOP_POST
];
1804 if (s
->control_command
) {
1805 s
->control_command_id
= SERVICE_EXEC_STOP_POST
;
1807 r
= service_spawn(s
,
1809 s
->timeout_stop_usec
,
1810 EXEC_APPLY_SANDBOXING
|EXEC_APPLY_CHROOT
|EXEC_APPLY_TTY_STDIN
|EXEC_IS_CONTROL
|EXEC_SETENV_RESULT
|EXEC_CONTROL_CGROUP
,
1815 service_set_state(s
, SERVICE_STOP_POST
);
1817 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, SERVICE_SUCCESS
);
1822 log_unit_warning_errno(UNIT(s
), r
, "Failed to run 'stop-post' task: %m");
1823 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
1826 static int state_to_kill_operation(ServiceState state
) {
1829 case SERVICE_STOP_WATCHDOG
:
1830 return KILL_WATCHDOG
;
1832 case SERVICE_STOP_SIGTERM
:
1833 case SERVICE_FINAL_SIGTERM
:
1834 return KILL_TERMINATE
;
1836 case SERVICE_STOP_SIGKILL
:
1837 case SERVICE_FINAL_SIGKILL
:
1841 return _KILL_OPERATION_INVALID
;
1845 static void service_enter_signal(Service
*s
, ServiceState state
, ServiceResult f
) {
1850 if (s
->result
== SERVICE_SUCCESS
)
1853 /* Before sending any signal, make sure we track all members of this cgroup */
1854 (void) unit_watch_all_pids(UNIT(s
));
1856 /* Also, enqueue a job that we recheck all our PIDs a bit later, given that it's likely some processes have
1858 (void) unit_enqueue_rewatch_pids(UNIT(s
));
1860 r
= unit_kill_context(
1863 state_to_kill_operation(state
),
1871 r
= service_arm_timer(s
, usec_add(now(CLOCK_MONOTONIC
),
1872 state
== SERVICE_STOP_WATCHDOG
? service_timeout_abort_usec(s
) : s
->timeout_stop_usec
));
1876 service_set_state(s
, state
);
1877 } else if (IN_SET(state
, SERVICE_STOP_WATCHDOG
, SERVICE_STOP_SIGTERM
) && s
->kill_context
.send_sigkill
)
1878 service_enter_signal(s
, SERVICE_STOP_SIGKILL
, SERVICE_SUCCESS
);
1879 else if (IN_SET(state
, SERVICE_STOP_WATCHDOG
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
))
1880 service_enter_stop_post(s
, SERVICE_SUCCESS
);
1881 else if (state
== SERVICE_FINAL_SIGTERM
&& s
->kill_context
.send_sigkill
)
1882 service_enter_signal(s
, SERVICE_FINAL_SIGKILL
, SERVICE_SUCCESS
);
1884 service_enter_dead(s
, SERVICE_SUCCESS
, true);
1889 log_unit_warning_errno(UNIT(s
), r
, "Failed to kill processes: %m");
1891 if (IN_SET(state
, SERVICE_STOP_WATCHDOG
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
))
1892 service_enter_stop_post(s
, SERVICE_FAILURE_RESOURCES
);
1894 service_enter_dead(s
, SERVICE_FAILURE_RESOURCES
, true);
1897 static void service_enter_stop_by_notify(Service
*s
) {
1900 (void) unit_enqueue_rewatch_pids(UNIT(s
));
1902 service_arm_timer(s
, usec_add(now(CLOCK_MONOTONIC
), s
->timeout_stop_usec
));
1904 /* The service told us it's stopping, so it's as if we SIGTERM'd it. */
1905 service_set_state(s
, SERVICE_STOP_SIGTERM
);
1908 static void service_enter_stop(Service
*s
, ServiceResult f
) {
1913 if (s
->result
== SERVICE_SUCCESS
)
1916 service_unwatch_control_pid(s
);
1917 (void) unit_enqueue_rewatch_pids(UNIT(s
));
1919 s
->control_command
= s
->exec_command
[SERVICE_EXEC_STOP
];
1920 if (s
->control_command
) {
1921 s
->control_command_id
= SERVICE_EXEC_STOP
;
1923 r
= service_spawn(s
,
1925 s
->timeout_stop_usec
,
1926 EXEC_APPLY_SANDBOXING
|EXEC_APPLY_CHROOT
|EXEC_IS_CONTROL
|EXEC_SETENV_RESULT
|EXEC_CONTROL_CGROUP
,
1931 service_set_state(s
, SERVICE_STOP
);
1933 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_SUCCESS
);
1938 log_unit_warning_errno(UNIT(s
), r
, "Failed to run 'stop' task: %m");
1939 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
1942 static bool service_good(Service
*s
) {
1946 if (s
->type
== SERVICE_DBUS
&& !s
->bus_name_good
)
1949 main_pid_ok
= main_pid_good(s
);
1950 if (main_pid_ok
> 0) /* It's alive */
1952 if (main_pid_ok
== 0) /* It's dead */
1955 /* OK, we don't know anything about the main PID, maybe
1956 * because there is none. Let's check the control group
1959 return cgroup_good(s
) != 0;
1962 static void service_enter_running(Service
*s
, ServiceResult f
) {
1965 if (s
->result
== SERVICE_SUCCESS
)
1968 service_unwatch_control_pid(s
);
1970 if (s
->result
!= SERVICE_SUCCESS
)
1971 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, f
);
1972 else if (service_good(s
)) {
1974 /* If there are any queued up sd_notify() notifications, process them now */
1975 if (s
->notify_state
== NOTIFY_RELOADING
)
1976 service_enter_reload_by_notify(s
);
1977 else if (s
->notify_state
== NOTIFY_STOPPING
)
1978 service_enter_stop_by_notify(s
);
1980 service_set_state(s
, SERVICE_RUNNING
);
1981 service_arm_timer(s
, usec_add(UNIT(s
)->active_enter_timestamp
.monotonic
, s
->runtime_max_usec
));
1984 } else if (s
->remain_after_exit
)
1985 service_set_state(s
, SERVICE_EXITED
);
1987 service_enter_stop(s
, SERVICE_SUCCESS
);
1990 static void service_enter_start_post(Service
*s
) {
1994 service_unwatch_control_pid(s
);
1995 service_reset_watchdog(s
);
1997 s
->control_command
= s
->exec_command
[SERVICE_EXEC_START_POST
];
1998 if (s
->control_command
) {
1999 s
->control_command_id
= SERVICE_EXEC_START_POST
;
2001 r
= service_spawn(s
,
2003 s
->timeout_start_usec
,
2004 EXEC_APPLY_SANDBOXING
|EXEC_APPLY_CHROOT
|EXEC_IS_CONTROL
|EXEC_CONTROL_CGROUP
,
2009 service_set_state(s
, SERVICE_START_POST
);
2011 service_enter_running(s
, SERVICE_SUCCESS
);
2016 log_unit_warning_errno(UNIT(s
), r
, "Failed to run 'start-post' task: %m");
2017 service_enter_stop(s
, SERVICE_FAILURE_RESOURCES
);
2020 static void service_kill_control_process(Service
*s
) {
2025 if (s
->control_pid
<= 0)
2028 r
= kill_and_sigcont(s
->control_pid
, SIGKILL
);
2030 _cleanup_free_
char *comm
= NULL
;
2032 (void) get_process_comm(s
->control_pid
, &comm
);
2034 log_unit_debug_errno(UNIT(s
), r
, "Failed to kill control process " PID_FMT
" (%s), ignoring: %m",
2035 s
->control_pid
, strna(comm
));
2039 static int service_adverse_to_leftover_processes(Service
*s
) {
2042 /* KillMode=mixed and control group are used to indicate that all process should be killed off.
2043 * SendSIGKILL is used for services that require a clean shutdown. These are typically database
2044 * service where a SigKilled process would result in a lengthy recovery and who's shutdown or
2045 * startup time is quite variable (so Timeout settings aren't of use).
2047 * Here we take these two factors and refuse to start a service if there are existing processes
2048 * within a control group. Databases, while generally having some protection against multiple
2049 * instances running, lets not stress the rigor of these. Also ExecStartPre parts of the service
2050 * aren't as rigoriously written to protect aganst against multiple use. */
2051 if (unit_warn_leftover_processes(UNIT(s
)) &&
2052 IN_SET(s
->kill_context
.kill_mode
, KILL_MIXED
, KILL_CONTROL_GROUP
) &&
2053 !s
->kill_context
.send_sigkill
) {
2054 return log_unit_error_errno(UNIT(s
), SYNTHETIC_ERRNO(EBUSY
), "Will not start SendSIGKILL=no service of type KillMode=control-group or mixed while processes exist");
2059 static void service_enter_start(Service
*s
) {
2067 service_unwatch_control_pid(s
);
2068 service_unwatch_main_pid(s
);
2070 r
= service_adverse_to_leftover_processes(s
);
2074 if (s
->type
== SERVICE_FORKING
) {
2075 s
->control_command_id
= SERVICE_EXEC_START
;
2076 c
= s
->control_command
= s
->exec_command
[SERVICE_EXEC_START
];
2078 s
->main_command
= NULL
;
2080 s
->control_command_id
= _SERVICE_EXEC_COMMAND_INVALID
;
2081 s
->control_command
= NULL
;
2083 c
= s
->main_command
= s
->exec_command
[SERVICE_EXEC_START
];
2087 if (s
->type
!= SERVICE_ONESHOT
) {
2088 /* There's no command line configured for the main command? Hmm, that is strange. This can only
2089 * happen if the configuration changes at runtime. In this case, let's enter a failure
2091 log_unit_error(UNIT(s
), "There's no 'start' task anymore we could start.");
2096 /* We force a fake state transition here. Otherwise, the unit would go directly from
2097 * SERVICE_DEAD to SERVICE_DEAD without SERVICE_ACTIVATING or SERVICE_ACTIVE
2098 * inbetween. This way we can later trigger actions that depend on the state
2099 * transition, including SuccessAction=. */
2100 service_set_state(s
, SERVICE_START
);
2102 service_enter_start_post(s
);
2106 if (IN_SET(s
->type
, SERVICE_SIMPLE
, SERVICE_IDLE
))
2107 /* For simple + idle this is the main process. We don't apply any timeout here, but
2108 * service_enter_running() will later apply the .runtime_max_usec timeout. */
2109 timeout
= USEC_INFINITY
;
2111 timeout
= s
->timeout_start_usec
;
2113 r
= service_spawn(s
,
2116 EXEC_PASS_FDS
|EXEC_APPLY_SANDBOXING
|EXEC_APPLY_CHROOT
|EXEC_APPLY_TTY_STDIN
|EXEC_SET_WATCHDOG
,
2121 if (IN_SET(s
->type
, SERVICE_SIMPLE
, SERVICE_IDLE
)) {
2122 /* For simple services we immediately start
2123 * the START_POST binaries. */
2125 service_set_main_pid(s
, pid
);
2126 service_enter_start_post(s
);
2128 } else if (s
->type
== SERVICE_FORKING
) {
2130 /* For forking services we wait until the start
2131 * process exited. */
2133 s
->control_pid
= pid
;
2134 service_set_state(s
, SERVICE_START
);
2136 } else if (IN_SET(s
->type
, SERVICE_ONESHOT
, SERVICE_DBUS
, SERVICE_NOTIFY
, SERVICE_EXEC
)) {
2138 /* For oneshot services we wait until the start process exited, too, but it is our main process. */
2140 /* For D-Bus services we know the main pid right away, but wait for the bus name to appear on the
2141 * bus. 'notify' and 'exec' services are similar. */
2143 service_set_main_pid(s
, pid
);
2144 service_set_state(s
, SERVICE_START
);
2146 assert_not_reached("Unknown service type");
2151 log_unit_warning_errno(UNIT(s
), r
, "Failed to run 'start' task: %m");
2152 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
2155 static void service_enter_start_pre(Service
*s
) {
2160 service_unwatch_control_pid(s
);
2162 s
->control_command
= s
->exec_command
[SERVICE_EXEC_START_PRE
];
2163 if (s
->control_command
) {
2165 r
= service_adverse_to_leftover_processes(s
);
2169 s
->control_command_id
= SERVICE_EXEC_START_PRE
;
2171 r
= service_spawn(s
,
2173 s
->timeout_start_usec
,
2174 EXEC_APPLY_SANDBOXING
|EXEC_APPLY_CHROOT
|EXEC_IS_CONTROL
|EXEC_APPLY_TTY_STDIN
,
2179 service_set_state(s
, SERVICE_START_PRE
);
2181 service_enter_start(s
);
2186 log_unit_warning_errno(UNIT(s
), r
, "Failed to run 'start-pre' task: %m");
2187 service_enter_dead(s
, SERVICE_FAILURE_RESOURCES
, true);
2190 static void service_enter_restart(Service
*s
) {
2191 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
2196 if (UNIT(s
)->job
&& UNIT(s
)->job
->type
== JOB_STOP
) {
2197 /* Don't restart things if we are going down anyway */
2198 log_unit_info(UNIT(s
), "Stop job pending for unit, delaying automatic restart.");
2200 r
= service_arm_timer(s
, usec_add(now(CLOCK_MONOTONIC
), s
->restart_usec
));
2207 /* Any units that are bound to this service must also be
2208 * restarted. We use JOB_RESTART (instead of the more obvious
2209 * JOB_START) here so that those dependency jobs will be added
2211 r
= manager_add_job(UNIT(s
)->manager
, JOB_RESTART
, UNIT(s
), JOB_REPLACE
, NULL
, &error
, NULL
);
2215 /* Count the jobs we enqueue for restarting. This counter is maintained as long as the unit isn't fully
2216 * stopped, i.e. as long as it remains up or remains in auto-start states. The use can reset the counter
2217 * explicitly however via the usual "systemctl reset-failure" logic. */
2219 s
->flush_n_restarts
= false;
2221 log_struct(LOG_INFO
,
2222 "MESSAGE_ID=" SD_MESSAGE_UNIT_RESTART_SCHEDULED_STR
,
2223 LOG_UNIT_ID(UNIT(s
)),
2224 LOG_UNIT_INVOCATION_ID(UNIT(s
)),
2225 LOG_UNIT_MESSAGE(UNIT(s
), "Scheduled restart job, restart counter is at %u.", s
->n_restarts
),
2226 "N_RESTARTS=%u", s
->n_restarts
);
2228 /* Notify clients about changed restart counter */
2229 unit_add_to_dbus_queue(UNIT(s
));
2231 /* Note that we stay in the SERVICE_AUTO_RESTART state here,
2232 * it will be canceled as part of the service_stop() call that
2233 * is executed as part of JOB_RESTART. */
2238 log_unit_warning(UNIT(s
), "Failed to schedule restart job: %s", bus_error_message(&error
, -r
));
2239 service_enter_dead(s
, SERVICE_FAILURE_RESOURCES
, false);
2242 static void service_enter_reload_by_notify(Service
*s
) {
2243 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
2248 service_arm_timer(s
, usec_add(now(CLOCK_MONOTONIC
), s
->timeout_start_usec
));
2249 service_set_state(s
, SERVICE_RELOAD
);
2251 /* service_enter_reload_by_notify is never called during a reload, thus no loops are possible. */
2252 r
= manager_propagate_reload(UNIT(s
)->manager
, UNIT(s
), JOB_FAIL
, &error
);
2254 log_unit_warning(UNIT(s
), "Failed to schedule propagation of reload: %s", bus_error_message(&error
, -r
));
2257 static void service_enter_reload(Service
*s
) {
2262 service_unwatch_control_pid(s
);
2263 s
->reload_result
= SERVICE_SUCCESS
;
2265 s
->control_command
= s
->exec_command
[SERVICE_EXEC_RELOAD
];
2266 if (s
->control_command
) {
2267 s
->control_command_id
= SERVICE_EXEC_RELOAD
;
2269 r
= service_spawn(s
,
2271 s
->timeout_start_usec
,
2272 EXEC_APPLY_SANDBOXING
|EXEC_APPLY_CHROOT
|EXEC_IS_CONTROL
|EXEC_CONTROL_CGROUP
,
2277 service_set_state(s
, SERVICE_RELOAD
);
2279 service_enter_running(s
, SERVICE_SUCCESS
);
2284 log_unit_warning_errno(UNIT(s
), r
, "Failed to run 'reload' task: %m");
2285 s
->reload_result
= SERVICE_FAILURE_RESOURCES
;
2286 service_enter_running(s
, SERVICE_SUCCESS
);
2289 static void service_run_next_control(Service
*s
) {
2294 assert(s
->control_command
);
2295 assert(s
->control_command
->command_next
);
2297 assert(s
->control_command_id
!= SERVICE_EXEC_START
);
2299 s
->control_command
= s
->control_command
->command_next
;
2300 service_unwatch_control_pid(s
);
2302 if (IN_SET(s
->state
, SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
, SERVICE_RUNNING
, SERVICE_RELOAD
))
2303 timeout
= s
->timeout_start_usec
;
2305 timeout
= s
->timeout_stop_usec
;
2307 r
= service_spawn(s
,
2310 EXEC_APPLY_SANDBOXING
|EXEC_APPLY_CHROOT
|EXEC_IS_CONTROL
|
2311 (IN_SET(s
->control_command_id
, SERVICE_EXEC_START_PRE
, SERVICE_EXEC_STOP_POST
) ? EXEC_APPLY_TTY_STDIN
: 0)|
2312 (IN_SET(s
->control_command_id
, SERVICE_EXEC_STOP
, SERVICE_EXEC_STOP_POST
) ? EXEC_SETENV_RESULT
: 0)|
2313 (IN_SET(s
->control_command_id
, SERVICE_EXEC_START_POST
, SERVICE_EXEC_RELOAD
, SERVICE_EXEC_STOP
, SERVICE_EXEC_STOP_POST
) ? EXEC_CONTROL_CGROUP
: 0),
2321 log_unit_warning_errno(UNIT(s
), r
, "Failed to run next control task: %m");
2323 if (IN_SET(s
->state
, SERVICE_START_PRE
, SERVICE_START_POST
, SERVICE_STOP
))
2324 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
2325 else if (s
->state
== SERVICE_STOP_POST
)
2326 service_enter_dead(s
, SERVICE_FAILURE_RESOURCES
, true);
2327 else if (s
->state
== SERVICE_RELOAD
) {
2328 s
->reload_result
= SERVICE_FAILURE_RESOURCES
;
2329 service_enter_running(s
, SERVICE_SUCCESS
);
2331 service_enter_stop(s
, SERVICE_FAILURE_RESOURCES
);
2334 static void service_run_next_main(Service
*s
) {
2339 assert(s
->main_command
);
2340 assert(s
->main_command
->command_next
);
2341 assert(s
->type
== SERVICE_ONESHOT
);
2343 s
->main_command
= s
->main_command
->command_next
;
2344 service_unwatch_main_pid(s
);
2346 r
= service_spawn(s
,
2348 s
->timeout_start_usec
,
2349 EXEC_PASS_FDS
|EXEC_APPLY_SANDBOXING
|EXEC_APPLY_CHROOT
|EXEC_APPLY_TTY_STDIN
|EXEC_SET_WATCHDOG
,
2354 service_set_main_pid(s
, pid
);
2359 log_unit_warning_errno(UNIT(s
), r
, "Failed to run next main task: %m");
2360 service_enter_stop(s
, SERVICE_FAILURE_RESOURCES
);
2363 static int service_start(Unit
*u
) {
2364 Service
*s
= SERVICE(u
);
2369 /* We cannot fulfill this request right now, try again later
2371 if (IN_SET(s
->state
,
2372 SERVICE_STOP
, SERVICE_STOP_WATCHDOG
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
2373 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
))
2376 /* Already on it! */
2377 if (IN_SET(s
->state
, SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
))
2380 /* A service that will be restarted must be stopped first to
2381 * trigger BindsTo and/or OnFailure dependencies. If a user
2382 * does not want to wait for the holdoff time to elapse, the
2383 * service should be manually restarted, not started. We
2384 * simply return EAGAIN here, so that any start jobs stay
2385 * queued, and assume that the auto restart timer will
2386 * eventually trigger the restart. */
2387 if (s
->state
== SERVICE_AUTO_RESTART
)
2390 assert(IN_SET(s
->state
, SERVICE_DEAD
, SERVICE_FAILED
));
2392 /* Make sure we don't enter a busy loop of some kind. */
2393 r
= unit_test_start_limit(u
);
2395 service_enter_dead(s
, SERVICE_FAILURE_START_LIMIT_HIT
, false);
2399 r
= unit_acquire_invocation_id(u
);
2403 s
->result
= SERVICE_SUCCESS
;
2404 s
->reload_result
= SERVICE_SUCCESS
;
2405 s
->main_pid_known
= false;
2406 s
->main_pid_alien
= false;
2407 s
->forbid_restart
= false;
2409 s
->status_text
= mfree(s
->status_text
);
2410 s
->status_errno
= 0;
2412 s
->notify_state
= NOTIFY_UNKNOWN
;
2414 s
->watchdog_original_usec
= s
->watchdog_usec
;
2415 s
->watchdog_override_enable
= false;
2416 s
->watchdog_override_usec
= USEC_INFINITY
;
2418 exec_command_reset_status_list_array(s
->exec_command
, _SERVICE_EXEC_COMMAND_MAX
);
2419 exec_status_reset(&s
->main_exec_status
);
2421 /* This is not an automatic restart? Flush the restart counter then */
2422 if (s
->flush_n_restarts
) {
2424 s
->flush_n_restarts
= false;
2427 u
->reset_accounting
= true;
2429 service_enter_start_pre(s
);
2433 static int service_stop(Unit
*u
) {
2434 Service
*s
= SERVICE(u
);
2438 /* Don't create restart jobs from manual stops. */
2439 s
->forbid_restart
= true;
2442 if (IN_SET(s
->state
,
2443 SERVICE_STOP
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
2444 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
))
2447 /* A restart will be scheduled or is in progress. */
2448 if (s
->state
== SERVICE_AUTO_RESTART
) {
2449 service_set_state(s
, SERVICE_DEAD
);
2453 /* If there's already something running we go directly into
2455 if (IN_SET(s
->state
, SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
, SERVICE_RELOAD
, SERVICE_STOP_WATCHDOG
)) {
2456 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_SUCCESS
);
2460 assert(IN_SET(s
->state
, SERVICE_RUNNING
, SERVICE_EXITED
));
2462 service_enter_stop(s
, SERVICE_SUCCESS
);
2466 static int service_reload(Unit
*u
) {
2467 Service
*s
= SERVICE(u
);
2471 assert(IN_SET(s
->state
, SERVICE_RUNNING
, SERVICE_EXITED
));
2473 service_enter_reload(s
);
2477 _pure_
static bool service_can_reload(Unit
*u
) {
2478 Service
*s
= SERVICE(u
);
2482 return !!s
->exec_command
[SERVICE_EXEC_RELOAD
];
2485 static unsigned service_exec_command_index(Unit
*u
, ServiceExecCommand id
, ExecCommand
*current
) {
2486 Service
*s
= SERVICE(u
);
2488 ExecCommand
*first
, *c
;
2492 first
= s
->exec_command
[id
];
2494 /* Figure out where we are in the list by walking back to the beginning */
2495 for (c
= current
; c
!= first
; c
= c
->command_prev
)
2501 static int service_serialize_exec_command(Unit
*u
, FILE *f
, ExecCommand
*command
) {
2502 _cleanup_free_
char *args
= NULL
, *p
= NULL
;
2503 size_t allocated
= 0, length
= 0;
2504 Service
*s
= SERVICE(u
);
2505 const char *type
, *key
;
2506 ServiceExecCommand id
;
2516 if (command
== s
->control_command
) {
2518 id
= s
->control_command_id
;
2521 id
= SERVICE_EXEC_START
;
2524 idx
= service_exec_command_index(u
, id
, command
);
2526 STRV_FOREACH(arg
, command
->argv
) {
2527 _cleanup_free_
char *e
= NULL
;
2535 if (!GREEDY_REALLOC(args
, allocated
, length
+ 1 + n
+ 1))
2539 args
[length
++] = ' ';
2541 memcpy(args
+ length
, e
, n
);
2545 if (!GREEDY_REALLOC(args
, allocated
, length
+ 1))
2550 p
= cescape(command
->path
);
2554 key
= strjoina(type
, "-command");
2555 return serialize_item_format(f
, key
, "%s %u %s %s", service_exec_command_to_string(id
), idx
, p
, args
);
2558 static int service_serialize(Unit
*u
, FILE *f
, FDSet
*fds
) {
2559 Service
*s
= SERVICE(u
);
2567 (void) serialize_item(f
, "state", service_state_to_string(s
->state
));
2568 (void) serialize_item(f
, "result", service_result_to_string(s
->result
));
2569 (void) serialize_item(f
, "reload-result", service_result_to_string(s
->reload_result
));
2571 if (s
->control_pid
> 0)
2572 (void) serialize_item_format(f
, "control-pid", PID_FMT
, s
->control_pid
);
2574 if (s
->main_pid_known
&& s
->main_pid
> 0)
2575 (void) serialize_item_format(f
, "main-pid", PID_FMT
, s
->main_pid
);
2577 (void) serialize_bool(f
, "main-pid-known", s
->main_pid_known
);
2578 (void) serialize_bool(f
, "bus-name-good", s
->bus_name_good
);
2579 (void) serialize_bool(f
, "bus-name-owner", s
->bus_name_owner
);
2581 (void) serialize_item_format(f
, "n-restarts", "%u", s
->n_restarts
);
2582 (void) serialize_bool(f
, "flush-n-restarts", s
->flush_n_restarts
);
2584 r
= serialize_item_escaped(f
, "status-text", s
->status_text
);
2588 service_serialize_exec_command(u
, f
, s
->control_command
);
2589 service_serialize_exec_command(u
, f
, s
->main_command
);
2591 r
= serialize_fd(f
, fds
, "stdin-fd", s
->stdin_fd
);
2594 r
= serialize_fd(f
, fds
, "stdout-fd", s
->stdout_fd
);
2597 r
= serialize_fd(f
, fds
, "stderr-fd", s
->stderr_fd
);
2601 if (s
->exec_fd_event_source
) {
2602 r
= serialize_fd(f
, fds
, "exec-fd", sd_event_source_get_io_fd(s
->exec_fd_event_source
));
2606 (void) serialize_bool(f
, "exec-fd-hot", s
->exec_fd_hot
);
2609 if (UNIT_ISSET(s
->accept_socket
)) {
2610 r
= serialize_item(f
, "accept-socket", UNIT_DEREF(s
->accept_socket
)->id
);
2615 r
= serialize_fd(f
, fds
, "socket-fd", s
->socket_fd
);
2619 LIST_FOREACH(fd_store
, fs
, s
->fd_store
) {
2620 _cleanup_free_
char *c
= NULL
;
2623 copy
= fdset_put_dup(fds
, fs
->fd
);
2625 return log_error_errno(copy
, "Failed to copy file descriptor for serialization: %m");
2627 c
= cescape(fs
->fdname
);
2631 (void) serialize_item_format(f
, "fd-store-fd", "%i %s", copy
, c
);
2634 if (s
->main_exec_status
.pid
> 0) {
2635 (void) serialize_item_format(f
, "main-exec-status-pid", PID_FMT
, s
->main_exec_status
.pid
);
2636 (void) serialize_dual_timestamp(f
, "main-exec-status-start", &s
->main_exec_status
.start_timestamp
);
2637 (void) serialize_dual_timestamp(f
, "main-exec-status-exit", &s
->main_exec_status
.exit_timestamp
);
2639 if (dual_timestamp_is_set(&s
->main_exec_status
.exit_timestamp
)) {
2640 (void) serialize_item_format(f
, "main-exec-status-code", "%i", s
->main_exec_status
.code
);
2641 (void) serialize_item_format(f
, "main-exec-status-status", "%i", s
->main_exec_status
.status
);
2645 (void) serialize_dual_timestamp(f
, "watchdog-timestamp", &s
->watchdog_timestamp
);
2646 (void) serialize_bool(f
, "forbid-restart", s
->forbid_restart
);
2648 if (s
->watchdog_override_enable
)
2649 (void) serialize_item_format(f
, "watchdog-override-usec", USEC_FMT
, s
->watchdog_override_usec
);
2651 if (s
->watchdog_original_usec
!= USEC_INFINITY
)
2652 (void) serialize_item_format(f
, "watchdog-original-usec", USEC_FMT
, s
->watchdog_original_usec
);
2657 static int service_deserialize_exec_command(Unit
*u
, const char *key
, const char *value
) {
2658 Service
*s
= SERVICE(u
);
2660 unsigned idx
= 0, i
;
2661 bool control
, found
= false;
2662 ServiceExecCommand id
= _SERVICE_EXEC_COMMAND_INVALID
;
2663 ExecCommand
*command
= NULL
;
2664 _cleanup_free_
char *path
= NULL
;
2665 _cleanup_strv_free_
char **argv
= NULL
;
2667 enum ExecCommandState
{
2668 STATE_EXEC_COMMAND_TYPE
,
2669 STATE_EXEC_COMMAND_INDEX
,
2670 STATE_EXEC_COMMAND_PATH
,
2671 STATE_EXEC_COMMAND_ARGS
,
2672 _STATE_EXEC_COMMAND_MAX
,
2673 _STATE_EXEC_COMMAND_INVALID
= -1,
2680 control
= streq(key
, "control-command");
2682 state
= STATE_EXEC_COMMAND_TYPE
;
2685 _cleanup_free_
char *arg
= NULL
;
2687 r
= extract_first_word(&value
, &arg
, NULL
, EXTRACT_CUNESCAPE
);
2694 case STATE_EXEC_COMMAND_TYPE
:
2695 id
= service_exec_command_from_string(arg
);
2699 state
= STATE_EXEC_COMMAND_INDEX
;
2701 case STATE_EXEC_COMMAND_INDEX
:
2702 r
= safe_atou(arg
, &idx
);
2706 state
= STATE_EXEC_COMMAND_PATH
;
2708 case STATE_EXEC_COMMAND_PATH
:
2709 path
= TAKE_PTR(arg
);
2710 state
= STATE_EXEC_COMMAND_ARGS
;
2712 if (!path_is_absolute(path
))
2715 case STATE_EXEC_COMMAND_ARGS
:
2716 r
= strv_extend(&argv
, arg
);
2721 assert_not_reached("Unknown error at deserialization of exec command");
2726 if (state
!= STATE_EXEC_COMMAND_ARGS
)
2729 /* Let's check whether exec command on given offset matches data that we just deserialized */
2730 for (command
= s
->exec_command
[id
], i
= 0; command
; command
= command
->command_next
, i
++) {
2734 found
= strv_equal(argv
, command
->argv
) && streq(command
->path
, path
);
2739 /* Command at the index we serialized is different, let's look for command that exactly
2740 * matches but is on different index. If there is no such command we will not resume execution. */
2741 for (command
= s
->exec_command
[id
]; command
; command
= command
->command_next
)
2742 if (strv_equal(command
->argv
, argv
) && streq(command
->path
, path
))
2746 if (command
&& control
)
2747 s
->control_command
= command
;
2749 s
->main_command
= command
;
2751 log_unit_warning(u
, "Current command vanished from the unit file, execution of the command list won't be resumed.");
2756 static int service_deserialize_item(Unit
*u
, const char *key
, const char *value
, FDSet
*fds
) {
2757 Service
*s
= SERVICE(u
);
2765 if (streq(key
, "state")) {
2768 state
= service_state_from_string(value
);
2770 log_unit_debug(u
, "Failed to parse state value: %s", value
);
2772 s
->deserialized_state
= state
;
2773 } else if (streq(key
, "result")) {
2776 f
= service_result_from_string(value
);
2778 log_unit_debug(u
, "Failed to parse result value: %s", value
);
2779 else if (f
!= SERVICE_SUCCESS
)
2782 } else if (streq(key
, "reload-result")) {
2785 f
= service_result_from_string(value
);
2787 log_unit_debug(u
, "Failed to parse reload result value: %s", value
);
2788 else if (f
!= SERVICE_SUCCESS
)
2789 s
->reload_result
= f
;
2791 } else if (streq(key
, "control-pid")) {
2794 if (parse_pid(value
, &pid
) < 0)
2795 log_unit_debug(u
, "Failed to parse control-pid value: %s", value
);
2797 s
->control_pid
= pid
;
2798 } else if (streq(key
, "main-pid")) {
2801 if (parse_pid(value
, &pid
) < 0)
2802 log_unit_debug(u
, "Failed to parse main-pid value: %s", value
);
2804 (void) service_set_main_pid(s
, pid
);
2805 } else if (streq(key
, "main-pid-known")) {
2808 b
= parse_boolean(value
);
2810 log_unit_debug(u
, "Failed to parse main-pid-known value: %s", value
);
2812 s
->main_pid_known
= b
;
2813 } else if (streq(key
, "bus-name-good")) {
2816 b
= parse_boolean(value
);
2818 log_unit_debug(u
, "Failed to parse bus-name-good value: %s", value
);
2820 s
->bus_name_good
= b
;
2821 } else if (streq(key
, "bus-name-owner")) {
2822 r
= free_and_strdup(&s
->bus_name_owner
, value
);
2824 log_unit_error_errno(u
, r
, "Unable to deserialize current bus owner %s: %m", value
);
2825 } else if (streq(key
, "status-text")) {
2828 r
= cunescape(value
, 0, &t
);
2830 log_unit_debug_errno(u
, r
, "Failed to unescape status text '%s': %m", value
);
2832 free_and_replace(s
->status_text
, t
);
2834 } else if (streq(key
, "accept-socket")) {
2837 r
= manager_load_unit(u
->manager
, value
, NULL
, NULL
, &socket
);
2839 log_unit_debug_errno(u
, r
, "Failed to load accept-socket unit '%s': %m", value
);
2841 unit_ref_set(&s
->accept_socket
, u
, socket
);
2842 SOCKET(socket
)->n_connections
++;
2845 } else if (streq(key
, "socket-fd")) {
2848 if (safe_atoi(value
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2849 log_unit_debug(u
, "Failed to parse socket-fd value: %s", value
);
2851 asynchronous_close(s
->socket_fd
);
2852 s
->socket_fd
= fdset_remove(fds
, fd
);
2854 } else if (streq(key
, "fd-store-fd")) {
2859 pf
= strcspn(value
, WHITESPACE
);
2860 fdv
= strndupa(value
, pf
);
2862 if (safe_atoi(fdv
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2863 log_unit_debug(u
, "Failed to parse fd-store-fd value: %s", value
);
2865 _cleanup_free_
char *t
= NULL
;
2869 fdn
+= strspn(fdn
, WHITESPACE
);
2870 (void) cunescape(fdn
, 0, &t
);
2872 r
= service_add_fd_store(s
, fd
, t
);
2874 log_unit_error_errno(u
, r
, "Failed to add fd to store: %m");
2876 fdset_remove(fds
, fd
);
2879 } else if (streq(key
, "main-exec-status-pid")) {
2882 if (parse_pid(value
, &pid
) < 0)
2883 log_unit_debug(u
, "Failed to parse main-exec-status-pid value: %s", value
);
2885 s
->main_exec_status
.pid
= pid
;
2886 } else if (streq(key
, "main-exec-status-code")) {
2889 if (safe_atoi(value
, &i
) < 0)
2890 log_unit_debug(u
, "Failed to parse main-exec-status-code value: %s", value
);
2892 s
->main_exec_status
.code
= i
;
2893 } else if (streq(key
, "main-exec-status-status")) {
2896 if (safe_atoi(value
, &i
) < 0)
2897 log_unit_debug(u
, "Failed to parse main-exec-status-status value: %s", value
);
2899 s
->main_exec_status
.status
= i
;
2900 } else if (streq(key
, "main-exec-status-start"))
2901 deserialize_dual_timestamp(value
, &s
->main_exec_status
.start_timestamp
);
2902 else if (streq(key
, "main-exec-status-exit"))
2903 deserialize_dual_timestamp(value
, &s
->main_exec_status
.exit_timestamp
);
2904 else if (streq(key
, "watchdog-timestamp"))
2905 deserialize_dual_timestamp(value
, &s
->watchdog_timestamp
);
2906 else if (streq(key
, "forbid-restart")) {
2909 b
= parse_boolean(value
);
2911 log_unit_debug(u
, "Failed to parse forbid-restart value: %s", value
);
2913 s
->forbid_restart
= b
;
2914 } else if (streq(key
, "stdin-fd")) {
2917 if (safe_atoi(value
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2918 log_unit_debug(u
, "Failed to parse stdin-fd value: %s", value
);
2920 asynchronous_close(s
->stdin_fd
);
2921 s
->stdin_fd
= fdset_remove(fds
, fd
);
2922 s
->exec_context
.stdio_as_fds
= true;
2924 } else if (streq(key
, "stdout-fd")) {
2927 if (safe_atoi(value
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2928 log_unit_debug(u
, "Failed to parse stdout-fd value: %s", value
);
2930 asynchronous_close(s
->stdout_fd
);
2931 s
->stdout_fd
= fdset_remove(fds
, fd
);
2932 s
->exec_context
.stdio_as_fds
= true;
2934 } else if (streq(key
, "stderr-fd")) {
2937 if (safe_atoi(value
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2938 log_unit_debug(u
, "Failed to parse stderr-fd value: %s", value
);
2940 asynchronous_close(s
->stderr_fd
);
2941 s
->stderr_fd
= fdset_remove(fds
, fd
);
2942 s
->exec_context
.stdio_as_fds
= true;
2944 } else if (streq(key
, "exec-fd")) {
2947 if (safe_atoi(value
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2948 log_unit_debug(u
, "Failed to parse exec-fd value: %s", value
);
2950 s
->exec_fd_event_source
= sd_event_source_unref(s
->exec_fd_event_source
);
2952 fd
= fdset_remove(fds
, fd
);
2953 if (service_allocate_exec_fd_event_source(s
, fd
, &s
->exec_fd_event_source
) < 0)
2956 } else if (streq(key
, "watchdog-override-usec")) {
2957 if (deserialize_usec(value
, &s
->watchdog_override_usec
) < 0)
2958 log_unit_debug(u
, "Failed to parse watchdog_override_usec value: %s", value
);
2960 s
->watchdog_override_enable
= true;
2962 } else if (streq(key
, "watchdog-original-usec")) {
2963 if (deserialize_usec(value
, &s
->watchdog_original_usec
) < 0)
2964 log_unit_debug(u
, "Failed to parse watchdog_original_usec value: %s", value
);
2966 } else if (STR_IN_SET(key
, "main-command", "control-command")) {
2967 r
= service_deserialize_exec_command(u
, key
, value
);
2969 log_unit_debug_errno(u
, r
, "Failed to parse serialized command \"%s\": %m", value
);
2971 } else if (streq(key
, "n-restarts")) {
2972 r
= safe_atou(value
, &s
->n_restarts
);
2974 log_unit_debug_errno(u
, r
, "Failed to parse serialized restart counter '%s': %m", value
);
2976 } else if (streq(key
, "flush-n-restarts")) {
2977 r
= parse_boolean(value
);
2979 log_unit_debug_errno(u
, r
, "Failed to parse serialized flush restart counter setting '%s': %m", value
);
2981 s
->flush_n_restarts
= r
;
2983 log_unit_debug(u
, "Unknown serialization key: %s", key
);
2988 _pure_
static UnitActiveState
service_active_state(Unit
*u
) {
2989 const UnitActiveState
*table
;
2993 table
= SERVICE(u
)->type
== SERVICE_IDLE
? state_translation_table_idle
: state_translation_table
;
2995 return table
[SERVICE(u
)->state
];
2998 static const char *service_sub_state_to_string(Unit
*u
) {
3001 return service_state_to_string(SERVICE(u
)->state
);
3004 static bool service_may_gc(Unit
*u
) {
3005 Service
*s
= SERVICE(u
);
3009 /* Never clean up services that still have a process around, even if the service is formally dead. Note that
3010 * unit_may_gc() already checked our cgroup for us, we just check our two additional PIDs, too, in case they
3011 * have moved outside of the cgroup. */
3013 if (main_pid_good(s
) > 0 ||
3014 control_pid_good(s
) > 0)
3020 static int service_retry_pid_file(Service
*s
) {
3023 assert(s
->pid_file
);
3024 assert(IN_SET(s
->state
, SERVICE_START
, SERVICE_START_POST
));
3026 r
= service_load_pid_file(s
, false);
3030 service_unwatch_pid_file(s
);
3032 service_enter_running(s
, SERVICE_SUCCESS
);
3036 static int service_watch_pid_file(Service
*s
) {
3039 log_unit_debug(UNIT(s
), "Setting watch for PID file %s", s
->pid_file_pathspec
->path
);
3041 r
= path_spec_watch(s
->pid_file_pathspec
, service_dispatch_inotify_io
);
3045 /* the pidfile might have appeared just before we set the watch */
3046 log_unit_debug(UNIT(s
), "Trying to read PID file %s in case it changed", s
->pid_file_pathspec
->path
);
3047 service_retry_pid_file(s
);
3051 log_unit_error_errno(UNIT(s
), r
, "Failed to set a watch for PID file %s: %m", s
->pid_file_pathspec
->path
);
3052 service_unwatch_pid_file(s
);
3056 static int service_demand_pid_file(Service
*s
) {
3059 assert(s
->pid_file
);
3060 assert(!s
->pid_file_pathspec
);
3062 ps
= new0(PathSpec
, 1);
3067 ps
->path
= strdup(s
->pid_file
);
3073 path_simplify(ps
->path
, false);
3075 /* PATH_CHANGED would not be enough. There are daemons (sendmail) that
3076 * keep their PID file open all the time. */
3077 ps
->type
= PATH_MODIFIED
;
3078 ps
->inotify_fd
= -1;
3080 s
->pid_file_pathspec
= ps
;
3082 return service_watch_pid_file(s
);
3085 static int service_dispatch_inotify_io(sd_event_source
*source
, int fd
, uint32_t events
, void *userdata
) {
3086 PathSpec
*p
= userdata
;
3091 s
= SERVICE(p
->unit
);
3095 assert(IN_SET(s
->state
, SERVICE_START
, SERVICE_START_POST
));
3096 assert(s
->pid_file_pathspec
);
3097 assert(path_spec_owns_inotify_fd(s
->pid_file_pathspec
, fd
));
3099 log_unit_debug(UNIT(s
), "inotify event");
3101 if (path_spec_fd_event(p
, events
) < 0)
3104 if (service_retry_pid_file(s
) == 0)
3107 if (service_watch_pid_file(s
) < 0)
3113 service_unwatch_pid_file(s
);
3114 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
3118 static int service_dispatch_exec_io(sd_event_source
*source
, int fd
, uint32_t events
, void *userdata
) {
3119 Service
*s
= SERVICE(userdata
);
3123 log_unit_debug(UNIT(s
), "got exec-fd event");
3125 /* If Type=exec is set, we'll consider a service started successfully the instant we invoked execve()
3126 * successfully for it. We implement this through a pipe() towards the child, which the kernel automatically
3127 * closes for us due to O_CLOEXEC on execve() in the child, which then triggers EOF on the pipe in the
3128 * parent. We need to be careful however, as there are other reasons that we might cause the child's side of
3129 * the pipe to be closed (for example, a simple exit()). To deal with that we'll ignore EOFs on the pipe unless
3130 * the child signalled us first that it is about to call the execve(). It does so by sending us a simple
3131 * non-zero byte via the pipe. We also provide the child with a way to inform us in case execve() failed: if it
3132 * sends a zero byte we'll ignore POLLHUP on the fd again. */
3138 n
= read(fd
, &x
, sizeof(x
));
3140 if (errno
== EAGAIN
) /* O_NONBLOCK in effect → everything queued has now been processed. */
3143 return log_unit_error_errno(UNIT(s
), errno
, "Failed to read from exec_fd: %m");
3145 if (n
== 0) { /* EOF → the event we are waiting for */
3147 s
->exec_fd_event_source
= sd_event_source_unref(s
->exec_fd_event_source
);
3149 if (s
->exec_fd_hot
) { /* Did the child tell us to expect EOF now? */
3150 log_unit_debug(UNIT(s
), "Got EOF on exec-fd");
3152 s
->exec_fd_hot
= false;
3154 /* Nice! This is what we have been waiting for. Transition to next state. */
3155 if (s
->type
== SERVICE_EXEC
&& s
->state
== SERVICE_START
)
3156 service_enter_start_post(s
);
3158 log_unit_debug(UNIT(s
), "Got EOF on exec-fd while it was disabled, ignoring.");
3163 /* A byte was read → this turns on/off the exec fd logic */
3164 assert(n
== sizeof(x
));
3171 static void service_notify_cgroup_empty_event(Unit
*u
) {
3172 Service
*s
= SERVICE(u
);
3176 log_unit_debug(u
, "Control group is empty.");
3180 /* Waiting for SIGCHLD is usually more interesting,
3181 * because it includes return codes/signals. Which is
3182 * why we ignore the cgroup events for most cases,
3183 * except when we don't know pid which to expect the
3187 if (s
->type
== SERVICE_NOTIFY
&&
3188 main_pid_good(s
) == 0 &&
3189 control_pid_good(s
) == 0) {
3190 /* No chance of getting a ready notification anymore */
3191 service_enter_stop_post(s
, SERVICE_FAILURE_PROTOCOL
);
3196 case SERVICE_START_POST
:
3197 if (s
->pid_file_pathspec
&&
3198 main_pid_good(s
) == 0 &&
3199 control_pid_good(s
) == 0) {
3201 /* Give up hoping for the daemon to write its PID file */
3202 log_unit_warning(u
, "Daemon never wrote its PID file. Failing.");
3204 service_unwatch_pid_file(s
);
3205 if (s
->state
== SERVICE_START
)
3206 service_enter_stop_post(s
, SERVICE_FAILURE_PROTOCOL
);
3208 service_enter_stop(s
, SERVICE_FAILURE_PROTOCOL
);
3212 case SERVICE_RUNNING
:
3213 /* service_enter_running() will figure out what to do */
3214 service_enter_running(s
, SERVICE_SUCCESS
);
3217 case SERVICE_STOP_WATCHDOG
:
3218 case SERVICE_STOP_SIGTERM
:
3219 case SERVICE_STOP_SIGKILL
:
3221 if (main_pid_good(s
) <= 0 && control_pid_good(s
) <= 0)
3222 service_enter_stop_post(s
, SERVICE_SUCCESS
);
3226 case SERVICE_STOP_POST
:
3227 case SERVICE_FINAL_SIGTERM
:
3228 case SERVICE_FINAL_SIGKILL
:
3229 if (main_pid_good(s
) <= 0 && control_pid_good(s
) <= 0)
3230 service_enter_dead(s
, SERVICE_SUCCESS
, true);
3239 static void service_notify_cgroup_oom_event(Unit
*u
) {
3240 Service
*s
= SERVICE(u
);
3242 log_unit_debug(u
, "Process of control group was killed by the OOM killer.");
3244 if (s
->oom_policy
== OOM_CONTINUE
)
3249 case SERVICE_START_PRE
:
3251 case SERVICE_START_POST
:
3253 if (s
->oom_policy
== OOM_STOP
)
3254 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_OOM_KILL
);
3255 else if (s
->oom_policy
== OOM_KILL
)
3256 service_enter_signal(s
, SERVICE_STOP_SIGKILL
, SERVICE_FAILURE_OOM_KILL
);
3260 case SERVICE_EXITED
:
3261 case SERVICE_RUNNING
:
3262 if (s
->oom_policy
== OOM_STOP
)
3263 service_enter_stop(s
, SERVICE_FAILURE_OOM_KILL
);
3264 else if (s
->oom_policy
== OOM_KILL
)
3265 service_enter_signal(s
, SERVICE_STOP_SIGKILL
, SERVICE_FAILURE_OOM_KILL
);
3269 case SERVICE_STOP_WATCHDOG
:
3270 case SERVICE_STOP_SIGTERM
:
3271 service_enter_signal(s
, SERVICE_STOP_SIGKILL
, SERVICE_FAILURE_OOM_KILL
);
3274 case SERVICE_STOP_SIGKILL
:
3275 case SERVICE_FINAL_SIGKILL
:
3276 if (s
->result
== SERVICE_SUCCESS
)
3277 s
->result
= SERVICE_FAILURE_OOM_KILL
;
3280 case SERVICE_STOP_POST
:
3281 case SERVICE_FINAL_SIGTERM
:
3282 service_enter_signal(s
, SERVICE_FINAL_SIGKILL
, SERVICE_FAILURE_OOM_KILL
);
3290 static void service_sigchld_event(Unit
*u
, pid_t pid
, int code
, int status
) {
3291 bool notify_dbus
= true;
3292 Service
*s
= SERVICE(u
);
3294 ExitClean clean_mode
;
3299 /* Oneshot services and non-SERVICE_EXEC_START commands should not be
3300 * considered daemons as they are typically not long running. */
3301 if (s
->type
== SERVICE_ONESHOT
|| (s
->control_pid
== pid
&& s
->control_command_id
!= SERVICE_EXEC_START
))
3302 clean_mode
= EXIT_CLEAN_COMMAND
;
3304 clean_mode
= EXIT_CLEAN_DAEMON
;
3306 if (is_clean_exit(code
, status
, clean_mode
, &s
->success_status
))
3307 f
= SERVICE_SUCCESS
;
3308 else if (code
== CLD_EXITED
)
3309 f
= SERVICE_FAILURE_EXIT_CODE
;
3310 else if (code
== CLD_KILLED
)
3311 f
= SERVICE_FAILURE_SIGNAL
;
3312 else if (code
== CLD_DUMPED
)
3313 f
= SERVICE_FAILURE_CORE_DUMP
;
3315 assert_not_reached("Unknown code");
3317 if (s
->main_pid
== pid
) {
3318 /* Forking services may occasionally move to a new PID.
3319 * As long as they update the PID file before exiting the old
3320 * PID, they're fine. */
3321 if (service_load_pid_file(s
, false) > 0)
3325 exec_status_exit(&s
->main_exec_status
, &s
->exec_context
, pid
, code
, status
);
3327 if (s
->main_command
) {
3328 /* If this is not a forking service than the
3329 * main process got started and hence we copy
3330 * the exit status so that it is recorded both
3331 * as main and as control process exit
3334 s
->main_command
->exec_status
= s
->main_exec_status
;
3336 if (s
->main_command
->flags
& EXEC_COMMAND_IGNORE_FAILURE
)
3337 f
= SERVICE_SUCCESS
;
3338 } else if (s
->exec_command
[SERVICE_EXEC_START
]) {
3340 /* If this is a forked process, then we should
3341 * ignore the return value if this was
3342 * configured for the starter process */
3344 if (s
->exec_command
[SERVICE_EXEC_START
]->flags
& EXEC_COMMAND_IGNORE_FAILURE
)
3345 f
= SERVICE_SUCCESS
;
3348 /* When this is a successful exit, let's log about the exit code on DEBUG level. If this is a failure
3349 * and the process exited on its own via exit(), then let's make this a NOTICE, under the assumption
3350 * that the service already logged the reason at a higher log level on its own. (Internally,
3351 * unit_log_process_exit() will possibly bump this to WARNING if the service died due to a signal.) */
3352 unit_log_process_exit(
3353 u
, f
== SERVICE_SUCCESS
? LOG_DEBUG
: LOG_NOTICE
,
3355 service_exec_command_to_string(SERVICE_EXEC_START
),
3358 if (s
->result
== SERVICE_SUCCESS
)
3361 if (s
->main_command
&&
3362 s
->main_command
->command_next
&&
3363 s
->type
== SERVICE_ONESHOT
&&
3364 f
== SERVICE_SUCCESS
) {
3366 /* There is another command to *
3367 * execute, so let's do that. */
3369 log_unit_debug(u
, "Running next main command for state %s.", service_state_to_string(s
->state
));
3370 service_run_next_main(s
);
3374 /* The service exited, so the service is officially
3376 s
->main_command
= NULL
;
3380 case SERVICE_START_POST
:
3381 case SERVICE_RELOAD
:
3383 /* Need to wait until the operation is
3388 if (s
->type
== SERVICE_ONESHOT
) {
3389 /* This was our main goal, so let's go on */
3390 if (f
== SERVICE_SUCCESS
)
3391 service_enter_start_post(s
);
3393 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, f
);
3395 } else if (s
->type
== SERVICE_NOTIFY
) {
3396 /* Only enter running through a notification, so that the
3397 * SERVICE_START state signifies that no ready notification
3398 * has been received */
3399 if (f
!= SERVICE_SUCCESS
)
3400 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, f
);
3401 else if (!s
->remain_after_exit
|| s
->notify_access
== NOTIFY_MAIN
)
3402 /* The service has never been and will never be active */
3403 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_PROTOCOL
);
3408 case SERVICE_RUNNING
:
3409 service_enter_running(s
, f
);
3412 case SERVICE_STOP_WATCHDOG
:
3413 case SERVICE_STOP_SIGTERM
:
3414 case SERVICE_STOP_SIGKILL
:
3416 if (control_pid_good(s
) <= 0)
3417 service_enter_stop_post(s
, f
);
3419 /* If there is still a control process, wait for that first */
3422 case SERVICE_STOP_POST
:
3423 case SERVICE_FINAL_SIGTERM
:
3424 case SERVICE_FINAL_SIGKILL
:
3426 if (control_pid_good(s
) <= 0)
3427 service_enter_dead(s
, f
, true);
3431 assert_not_reached("Uh, main process died at wrong time.");
3435 } else if (s
->control_pid
== pid
) {
3438 if (s
->control_command
) {
3439 exec_status_exit(&s
->control_command
->exec_status
, &s
->exec_context
, pid
, code
, status
);
3441 if (s
->control_command
->flags
& EXEC_COMMAND_IGNORE_FAILURE
)
3442 f
= SERVICE_SUCCESS
;
3445 unit_log_process_exit(
3446 u
, f
== SERVICE_SUCCESS
? LOG_DEBUG
: LOG_NOTICE
,
3448 service_exec_command_to_string(s
->control_command_id
),
3451 if (s
->result
== SERVICE_SUCCESS
)
3454 if (s
->control_command
&&
3455 s
->control_command
->command_next
&&
3456 f
== SERVICE_SUCCESS
) {
3458 /* There is another command to *
3459 * execute, so let's do that. */
3461 log_unit_debug(u
, "Running next control command for state %s.", service_state_to_string(s
->state
));
3462 service_run_next_control(s
);
3465 /* No further commands for this step, so let's
3466 * figure out what to do next */
3468 s
->control_command
= NULL
;
3469 s
->control_command_id
= _SERVICE_EXEC_COMMAND_INVALID
;
3471 log_unit_debug(u
, "Got final SIGCHLD for state %s.", service_state_to_string(s
->state
));
3475 case SERVICE_START_PRE
:
3476 if (f
== SERVICE_SUCCESS
)
3477 service_enter_start(s
);
3479 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, f
);
3483 if (s
->type
!= SERVICE_FORKING
)
3484 /* Maybe spurious event due to a reload that changed the type? */
3487 if (f
!= SERVICE_SUCCESS
) {
3488 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, f
);
3493 bool has_start_post
;
3496 /* Let's try to load the pid file here if we can.
3497 * The PID file might actually be created by a START_POST
3498 * script. In that case don't worry if the loading fails. */
3500 has_start_post
= s
->exec_command
[SERVICE_EXEC_START_POST
];
3501 r
= service_load_pid_file(s
, !has_start_post
);
3502 if (!has_start_post
&& r
< 0) {
3503 r
= service_demand_pid_file(s
);
3504 if (r
< 0 || cgroup_good(s
) == 0)
3505 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_PROTOCOL
);
3509 service_search_main_pid(s
);
3511 service_enter_start_post(s
);
3514 case SERVICE_START_POST
:
3515 if (f
!= SERVICE_SUCCESS
) {
3516 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, f
);
3523 r
= service_load_pid_file(s
, true);
3525 r
= service_demand_pid_file(s
);
3526 if (r
< 0 || cgroup_good(s
) == 0)
3527 service_enter_stop(s
, SERVICE_FAILURE_PROTOCOL
);
3531 service_search_main_pid(s
);
3533 service_enter_running(s
, SERVICE_SUCCESS
);
3536 case SERVICE_RELOAD
:
3537 if (f
== SERVICE_SUCCESS
)
3538 if (service_load_pid_file(s
, true) < 0)
3539 service_search_main_pid(s
);
3541 s
->reload_result
= f
;
3542 service_enter_running(s
, SERVICE_SUCCESS
);
3546 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, f
);
3549 case SERVICE_STOP_WATCHDOG
:
3550 case SERVICE_STOP_SIGTERM
:
3551 case SERVICE_STOP_SIGKILL
:
3552 if (main_pid_good(s
) <= 0)
3553 service_enter_stop_post(s
, f
);
3555 /* If there is still a service process around, wait until
3556 * that one quit, too */
3559 case SERVICE_STOP_POST
:
3560 case SERVICE_FINAL_SIGTERM
:
3561 case SERVICE_FINAL_SIGKILL
:
3562 if (main_pid_good(s
) <= 0)
3563 service_enter_dead(s
, f
, true);
3567 assert_not_reached("Uh, control process died at wrong time.");
3570 } else /* Neither control nor main PID? If so, don't notify about anything */
3571 notify_dbus
= false;
3573 /* Notify clients about changed exit status */
3575 unit_add_to_dbus_queue(u
);
3577 /* We watch the main/control process otherwise we can't retrieve the unit they
3578 * belong to with cgroupv1. But if they are not our direct child, we won't get a
3579 * SIGCHLD for them. Therefore we need to look for others to watch so we can
3580 * detect when the cgroup becomes empty. Note that the control process is always
3581 * our child so it's pointless to watch all other processes. */
3582 if (!control_pid_good(s
))
3583 if (!s
->main_pid_known
|| s
->main_pid_alien
)
3584 (void) unit_enqueue_rewatch_pids(u
);
3587 static int service_dispatch_timer(sd_event_source
*source
, usec_t usec
, void *userdata
) {
3588 Service
*s
= SERVICE(userdata
);
3591 assert(source
== s
->timer_event_source
);
3595 case SERVICE_START_PRE
:
3597 log_unit_warning(UNIT(s
), "%s operation timed out. Terminating.", s
->state
== SERVICE_START
? "Start" : "Start-pre");
3598 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_TIMEOUT
);
3601 case SERVICE_START_POST
:
3602 log_unit_warning(UNIT(s
), "Start-post operation timed out. Stopping.");
3603 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_TIMEOUT
);
3606 case SERVICE_RUNNING
:
3607 log_unit_warning(UNIT(s
), "Service reached runtime time limit. Stopping.");
3608 service_enter_stop(s
, SERVICE_FAILURE_TIMEOUT
);
3611 case SERVICE_RELOAD
:
3612 log_unit_warning(UNIT(s
), "Reload operation timed out. Killing reload process.");
3613 service_kill_control_process(s
);
3614 s
->reload_result
= SERVICE_FAILURE_TIMEOUT
;
3615 service_enter_running(s
, SERVICE_SUCCESS
);
3619 log_unit_warning(UNIT(s
), "Stopping timed out. Terminating.");
3620 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_TIMEOUT
);
3623 case SERVICE_STOP_WATCHDOG
:
3624 log_unit_warning(UNIT(s
), "State 'stop-watchdog' timed out. Terminating.");
3625 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_TIMEOUT
);
3628 case SERVICE_STOP_SIGTERM
:
3629 if (s
->kill_context
.send_sigkill
) {
3630 log_unit_warning(UNIT(s
), "State 'stop-sigterm' timed out. Killing.");
3631 service_enter_signal(s
, SERVICE_STOP_SIGKILL
, SERVICE_FAILURE_TIMEOUT
);
3633 log_unit_warning(UNIT(s
), "State 'stop-sigterm' timed out. Skipping SIGKILL.");
3634 service_enter_stop_post(s
, SERVICE_FAILURE_TIMEOUT
);
3639 case SERVICE_STOP_SIGKILL
:
3640 /* Uh, we sent a SIGKILL and it is still not gone?
3641 * Must be something we cannot kill, so let's just be
3642 * weirded out and continue */
3644 log_unit_warning(UNIT(s
), "Processes still around after SIGKILL. Ignoring.");
3645 service_enter_stop_post(s
, SERVICE_FAILURE_TIMEOUT
);
3648 case SERVICE_STOP_POST
:
3649 log_unit_warning(UNIT(s
), "State 'stop-post' timed out. Terminating.");
3650 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, SERVICE_FAILURE_TIMEOUT
);
3653 case SERVICE_FINAL_SIGTERM
:
3654 if (s
->kill_context
.send_sigkill
) {
3655 log_unit_warning(UNIT(s
), "State 'stop-final-sigterm' timed out. Killing.");
3656 service_enter_signal(s
, SERVICE_FINAL_SIGKILL
, SERVICE_FAILURE_TIMEOUT
);
3658 log_unit_warning(UNIT(s
), "State 'stop-final-sigterm' timed out. Skipping SIGKILL. Entering failed mode.");
3659 service_enter_dead(s
, SERVICE_FAILURE_TIMEOUT
, false);
3664 case SERVICE_FINAL_SIGKILL
:
3665 log_unit_warning(UNIT(s
), "Processes still around after final SIGKILL. Entering failed mode.");
3666 service_enter_dead(s
, SERVICE_FAILURE_TIMEOUT
, true);
3669 case SERVICE_AUTO_RESTART
:
3670 if (s
->restart_usec
> 0) {
3671 char buf_restart
[FORMAT_TIMESPAN_MAX
];
3672 log_unit_info(UNIT(s
),
3673 "Service RestartSec=%s expired, scheduling restart.",
3674 format_timespan(buf_restart
, sizeof buf_restart
, s
->restart_usec
, USEC_PER_SEC
));
3676 log_unit_info(UNIT(s
),
3677 "Service has no hold-off time (RestartSec=0), scheduling restart.");
3679 service_enter_restart(s
);
3683 assert_not_reached("Timeout at wrong time.");
3689 static int service_dispatch_watchdog(sd_event_source
*source
, usec_t usec
, void *userdata
) {
3690 Service
*s
= SERVICE(userdata
);
3691 char t
[FORMAT_TIMESPAN_MAX
];
3692 usec_t watchdog_usec
;
3695 assert(source
== s
->watchdog_event_source
);
3697 watchdog_usec
= service_get_watchdog_usec(s
);
3699 if (UNIT(s
)->manager
->service_watchdogs
) {
3700 log_unit_error(UNIT(s
), "Watchdog timeout (limit %s)!",
3701 format_timespan(t
, sizeof(t
), watchdog_usec
, 1));
3703 service_enter_signal(s
, SERVICE_STOP_WATCHDOG
, SERVICE_FAILURE_WATCHDOG
);
3705 log_unit_warning(UNIT(s
), "Watchdog disabled! Ignoring watchdog timeout (limit %s)!",
3706 format_timespan(t
, sizeof(t
), watchdog_usec
, 1));
3711 static bool service_notify_message_authorized(Service
*s
, pid_t pid
, char **tags
, FDSet
*fds
) {
3714 if (s
->notify_access
== NOTIFY_NONE
) {
3715 log_unit_warning(UNIT(s
), "Got notification message from PID "PID_FMT
", but reception is disabled.", pid
);
3719 if (s
->notify_access
== NOTIFY_MAIN
&& pid
!= s
->main_pid
) {
3720 if (s
->main_pid
!= 0)
3721 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
);
3723 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
);
3728 if (s
->notify_access
== NOTIFY_EXEC
&& pid
!= s
->main_pid
&& pid
!= s
->control_pid
) {
3729 if (s
->main_pid
!= 0 && s
->control_pid
!= 0)
3730 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
,
3731 pid
, s
->main_pid
, s
->control_pid
);
3732 else if (s
->main_pid
!= 0)
3733 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
);
3734 else if (s
->control_pid
!= 0)
3735 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
);
3737 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
);
3745 static void service_force_watchdog(Service
*s
) {
3746 if (!UNIT(s
)->manager
->service_watchdogs
)
3749 log_unit_error(UNIT(s
), "Watchdog request (last status: %s)!",
3750 s
->status_text
? s
->status_text
: "<unset>");
3752 service_enter_signal(s
, SERVICE_STOP_WATCHDOG
, SERVICE_FAILURE_WATCHDOG
);
3755 static void service_notify_message(
3757 const struct ucred
*ucred
,
3761 Service
*s
= SERVICE(u
);
3762 bool notify_dbus
= false;
3770 if (!service_notify_message_authorized(SERVICE(u
), ucred
->pid
, tags
, fds
))
3773 if (DEBUG_LOGGING
) {
3774 _cleanup_free_
char *cc
= NULL
;
3776 cc
= strv_join(tags
, ", ");
3777 log_unit_debug(u
, "Got notification message from PID "PID_FMT
" (%s)", ucred
->pid
, isempty(cc
) ? "n/a" : cc
);
3780 /* Interpret MAINPID= */
3781 e
= strv_find_startswith(tags
, "MAINPID=");
3782 if (e
&& IN_SET(s
->state
, SERVICE_START
, SERVICE_START_POST
, SERVICE_RUNNING
, SERVICE_RELOAD
)) {
3785 if (parse_pid(e
, &new_main_pid
) < 0)
3786 log_unit_warning(u
, "Failed to parse MAINPID= field in notification message, ignoring: %s", e
);
3787 else if (!s
->main_pid_known
|| new_main_pid
!= s
->main_pid
) {
3789 r
= service_is_suitable_main_pid(s
, new_main_pid
, LOG_WARNING
);
3791 /* The new main PID is a bit suspicous, which is OK if the sender is privileged. */
3793 if (ucred
->uid
== 0) {
3794 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
);
3797 log_unit_debug(u
, "New main PID "PID_FMT
" does not belong to service, refusing.", new_main_pid
);
3800 service_set_main_pid(s
, new_main_pid
);
3802 r
= unit_watch_pid(UNIT(s
), new_main_pid
, false);
3804 log_unit_warning_errno(UNIT(s
), r
, "Failed to watch new main PID "PID_FMT
" for service: %m", new_main_pid
);
3811 /* Interpret READY=/STOPPING=/RELOADING=. Last one wins. */
3812 STRV_FOREACH_BACKWARDS(i
, tags
) {
3814 if (streq(*i
, "READY=1")) {
3815 s
->notify_state
= NOTIFY_READY
;
3817 /* Type=notify services inform us about completed
3818 * initialization with READY=1 */
3819 if (s
->type
== SERVICE_NOTIFY
&& s
->state
== SERVICE_START
)
3820 service_enter_start_post(s
);
3822 /* Sending READY=1 while we are reloading informs us
3823 * that the reloading is complete */
3824 if (s
->state
== SERVICE_RELOAD
&& s
->control_pid
== 0)
3825 service_enter_running(s
, SERVICE_SUCCESS
);
3830 } else if (streq(*i
, "RELOADING=1")) {
3831 s
->notify_state
= NOTIFY_RELOADING
;
3833 if (s
->state
== SERVICE_RUNNING
)
3834 service_enter_reload_by_notify(s
);
3839 } else if (streq(*i
, "STOPPING=1")) {
3840 s
->notify_state
= NOTIFY_STOPPING
;
3842 if (s
->state
== SERVICE_RUNNING
)
3843 service_enter_stop_by_notify(s
);
3850 /* Interpret STATUS= */
3851 e
= strv_find_startswith(tags
, "STATUS=");
3853 _cleanup_free_
char *t
= NULL
;
3856 /* Note that this size limit check is mostly paranoia: since the datagram size we are willing
3857 * to process is already limited to NOTIFY_BUFFER_MAX, this limit here should never be hit. */
3858 if (strlen(e
) > STATUS_TEXT_MAX
)
3859 log_unit_warning(u
, "Status message overly long (%zu > %u), ignoring.", strlen(e
), STATUS_TEXT_MAX
);
3860 else if (!utf8_is_valid(e
))
3861 log_unit_warning(u
, "Status message in notification message is not UTF-8 clean, ignoring.");
3869 if (!streq_ptr(s
->status_text
, t
)) {
3870 free_and_replace(s
->status_text
, t
);
3875 /* Interpret ERRNO= */
3876 e
= strv_find_startswith(tags
, "ERRNO=");
3880 status_errno
= parse_errno(e
);
3881 if (status_errno
< 0)
3882 log_unit_warning_errno(u
, status_errno
,
3883 "Failed to parse ERRNO= field value '%s' in notification message: %m", e
);
3884 else if (s
->status_errno
!= status_errno
) {
3885 s
->status_errno
= status_errno
;
3890 /* Interpret EXTEND_TIMEOUT= */
3891 e
= strv_find_startswith(tags
, "EXTEND_TIMEOUT_USEC=");
3893 usec_t extend_timeout_usec
;
3894 if (safe_atou64(e
, &extend_timeout_usec
) < 0)
3895 log_unit_warning(u
, "Failed to parse EXTEND_TIMEOUT_USEC=%s", e
);
3897 service_extend_timeout(s
, extend_timeout_usec
);
3900 /* Interpret WATCHDOG= */
3901 e
= strv_find_startswith(tags
, "WATCHDOG=");
3904 service_reset_watchdog(s
);
3905 else if (streq(e
, "trigger"))
3906 service_force_watchdog(s
);
3908 log_unit_warning(u
, "Passed WATCHDOG= field is invalid, ignoring.");
3911 e
= strv_find_startswith(tags
, "WATCHDOG_USEC=");
3913 usec_t watchdog_override_usec
;
3914 if (safe_atou64(e
, &watchdog_override_usec
) < 0)
3915 log_unit_warning(u
, "Failed to parse WATCHDOG_USEC=%s", e
);
3917 service_override_watchdog_timeout(s
, watchdog_override_usec
);
3920 /* Process FD store messages. Either FDSTOREREMOVE=1 for removal, or FDSTORE=1 for addition. In both cases,
3921 * process FDNAME= for picking the file descriptor name to use. Note that FDNAME= is required when removing
3922 * fds, but optional when pushing in new fds, for compatibility reasons. */
3923 if (strv_find(tags
, "FDSTOREREMOVE=1")) {
3926 name
= strv_find_startswith(tags
, "FDNAME=");
3927 if (!name
|| !fdname_is_valid(name
))
3928 log_unit_warning(u
, "FDSTOREREMOVE=1 requested, but no valid file descriptor name passed, ignoring.");
3930 service_remove_fd_store(s
, name
);
3932 } else if (strv_find(tags
, "FDSTORE=1")) {
3935 name
= strv_find_startswith(tags
, "FDNAME=");
3936 if (name
&& !fdname_is_valid(name
)) {
3937 log_unit_warning(u
, "Passed FDNAME= name is invalid, ignoring.");
3941 (void) service_add_fd_store_set(s
, fds
, name
);
3944 /* Notify clients about changed status or main pid */
3946 unit_add_to_dbus_queue(u
);
3949 static int service_get_timeout(Unit
*u
, usec_t
*timeout
) {
3950 Service
*s
= SERVICE(u
);
3954 if (!s
->timer_event_source
)
3957 r
= sd_event_source_get_time(s
->timer_event_source
, &t
);
3960 if (t
== USEC_INFINITY
)
3967 static void service_bus_name_owner_change(
3970 const char *old_owner
,
3971 const char *new_owner
) {
3973 Service
*s
= SERVICE(u
);
3979 assert(streq(s
->bus_name
, name
));
3980 assert(old_owner
|| new_owner
);
3982 if (old_owner
&& new_owner
)
3983 log_unit_debug(u
, "D-Bus name %s changed owner from %s to %s", name
, old_owner
, new_owner
);
3985 log_unit_debug(u
, "D-Bus name %s no longer registered by %s", name
, old_owner
);
3987 log_unit_debug(u
, "D-Bus name %s now registered by %s", name
, new_owner
);
3989 s
->bus_name_good
= !!new_owner
;
3991 /* Track the current owner, so we can reconstruct changes after a daemon reload */
3992 r
= free_and_strdup(&s
->bus_name_owner
, new_owner
);
3994 log_unit_error_errno(u
, r
, "Unable to set new bus name owner %s: %m", new_owner
);
3998 if (s
->type
== SERVICE_DBUS
) {
4000 /* service_enter_running() will figure out what to
4002 if (s
->state
== SERVICE_RUNNING
)
4003 service_enter_running(s
, SERVICE_SUCCESS
);
4004 else if (s
->state
== SERVICE_START
&& new_owner
)
4005 service_enter_start_post(s
);
4007 } else if (new_owner
&&
4015 _cleanup_(sd_bus_creds_unrefp
) sd_bus_creds
*creds
= NULL
;
4018 /* Try to acquire PID from bus service */
4020 r
= sd_bus_get_name_creds(u
->manager
->api_bus
, name
, SD_BUS_CREDS_PID
, &creds
);
4022 r
= sd_bus_creds_get_pid(creds
, &pid
);
4024 log_unit_debug(u
, "D-Bus name %s is now owned by process " PID_FMT
, name
, pid
);
4026 service_set_main_pid(s
, pid
);
4027 unit_watch_pid(UNIT(s
), pid
, false);
4032 int service_set_socket_fd(Service
*s
, int fd
, Socket
*sock
, bool selinux_context_net
) {
4033 _cleanup_free_
char *peer
= NULL
;
4039 /* This is called by the socket code when instantiating a new service for a stream socket and the socket needs
4040 * to be configured. We take ownership of the passed fd on success. */
4042 if (UNIT(s
)->load_state
!= UNIT_LOADED
)
4045 if (s
->socket_fd
>= 0)
4048 if (s
->state
!= SERVICE_DEAD
)
4051 if (getpeername_pretty(fd
, true, &peer
) >= 0) {
4053 if (UNIT(s
)->description
) {
4054 _cleanup_free_
char *a
;
4056 a
= strjoin(UNIT(s
)->description
, " (", peer
, ")");
4060 r
= unit_set_description(UNIT(s
), a
);
4062 r
= unit_set_description(UNIT(s
), peer
);
4068 r
= unit_add_two_dependencies(UNIT(sock
), UNIT_BEFORE
, UNIT_TRIGGERS
, UNIT(s
), false, UNIT_DEPENDENCY_IMPLICIT
);
4073 s
->socket_fd_selinux_context_net
= selinux_context_net
;
4075 unit_ref_set(&s
->accept_socket
, UNIT(s
), UNIT(sock
));
4079 static void service_reset_failed(Unit
*u
) {
4080 Service
*s
= SERVICE(u
);
4084 if (s
->state
== SERVICE_FAILED
)
4085 service_set_state(s
, SERVICE_DEAD
);
4087 s
->result
= SERVICE_SUCCESS
;
4088 s
->reload_result
= SERVICE_SUCCESS
;
4090 s
->flush_n_restarts
= false;
4093 static int service_kill(Unit
*u
, KillWho who
, int signo
, sd_bus_error
*error
) {
4094 Service
*s
= SERVICE(u
);
4098 return unit_kill_common(u
, who
, signo
, s
->main_pid
, s
->control_pid
, error
);
4101 static int service_main_pid(Unit
*u
) {
4102 Service
*s
= SERVICE(u
);
4109 static int service_control_pid(Unit
*u
) {
4110 Service
*s
= SERVICE(u
);
4114 return s
->control_pid
;
4117 static bool service_needs_console(Unit
*u
) {
4118 Service
*s
= SERVICE(u
);
4122 /* We provide our own implementation of this here, instead of relying of the generic implementation
4123 * unit_needs_console() provides, since we want to return false if we are in SERVICE_EXITED state. */
4125 if (!exec_context_may_touch_console(&s
->exec_context
))
4128 return IN_SET(s
->state
,
4135 SERVICE_STOP_WATCHDOG
,
4136 SERVICE_STOP_SIGTERM
,
4137 SERVICE_STOP_SIGKILL
,
4139 SERVICE_FINAL_SIGTERM
,
4140 SERVICE_FINAL_SIGKILL
);
4143 static int service_exit_status(Unit
*u
) {
4144 Service
*s
= SERVICE(u
);
4148 if (s
->main_exec_status
.pid
<= 0 ||
4149 !dual_timestamp_is_set(&s
->main_exec_status
.exit_timestamp
))
4152 if (s
->main_exec_status
.code
!= CLD_EXITED
)
4155 return s
->main_exec_status
.status
;
4158 static const char* const service_restart_table
[_SERVICE_RESTART_MAX
] = {
4159 [SERVICE_RESTART_NO
] = "no",
4160 [SERVICE_RESTART_ON_SUCCESS
] = "on-success",
4161 [SERVICE_RESTART_ON_FAILURE
] = "on-failure",
4162 [SERVICE_RESTART_ON_ABNORMAL
] = "on-abnormal",
4163 [SERVICE_RESTART_ON_WATCHDOG
] = "on-watchdog",
4164 [SERVICE_RESTART_ON_ABORT
] = "on-abort",
4165 [SERVICE_RESTART_ALWAYS
] = "always",
4168 DEFINE_STRING_TABLE_LOOKUP(service_restart
, ServiceRestart
);
4170 static const char* const service_type_table
[_SERVICE_TYPE_MAX
] = {
4171 [SERVICE_SIMPLE
] = "simple",
4172 [SERVICE_FORKING
] = "forking",
4173 [SERVICE_ONESHOT
] = "oneshot",
4174 [SERVICE_DBUS
] = "dbus",
4175 [SERVICE_NOTIFY
] = "notify",
4176 [SERVICE_IDLE
] = "idle",
4177 [SERVICE_EXEC
] = "exec",
4180 DEFINE_STRING_TABLE_LOOKUP(service_type
, ServiceType
);
4182 static const char* const service_exec_command_table
[_SERVICE_EXEC_COMMAND_MAX
] = {
4183 [SERVICE_EXEC_START_PRE
] = "ExecStartPre",
4184 [SERVICE_EXEC_START
] = "ExecStart",
4185 [SERVICE_EXEC_START_POST
] = "ExecStartPost",
4186 [SERVICE_EXEC_RELOAD
] = "ExecReload",
4187 [SERVICE_EXEC_STOP
] = "ExecStop",
4188 [SERVICE_EXEC_STOP_POST
] = "ExecStopPost",
4191 DEFINE_STRING_TABLE_LOOKUP(service_exec_command
, ServiceExecCommand
);
4193 static const char* const notify_state_table
[_NOTIFY_STATE_MAX
] = {
4194 [NOTIFY_UNKNOWN
] = "unknown",
4195 [NOTIFY_READY
] = "ready",
4196 [NOTIFY_RELOADING
] = "reloading",
4197 [NOTIFY_STOPPING
] = "stopping",
4200 DEFINE_STRING_TABLE_LOOKUP(notify_state
, NotifyState
);
4202 static const char* const service_result_table
[_SERVICE_RESULT_MAX
] = {
4203 [SERVICE_SUCCESS
] = "success",
4204 [SERVICE_FAILURE_RESOURCES
] = "resources",
4205 [SERVICE_FAILURE_PROTOCOL
] = "protocol",
4206 [SERVICE_FAILURE_TIMEOUT
] = "timeout",
4207 [SERVICE_FAILURE_EXIT_CODE
] = "exit-code",
4208 [SERVICE_FAILURE_SIGNAL
] = "signal",
4209 [SERVICE_FAILURE_CORE_DUMP
] = "core-dump",
4210 [SERVICE_FAILURE_WATCHDOG
] = "watchdog",
4211 [SERVICE_FAILURE_START_LIMIT_HIT
] = "start-limit-hit",
4212 [SERVICE_FAILURE_OOM_KILL
] = "oom-kill",
4215 DEFINE_STRING_TABLE_LOOKUP(service_result
, ServiceResult
);
4217 const UnitVTable service_vtable
= {
4218 .object_size
= sizeof(Service
),
4219 .exec_context_offset
= offsetof(Service
, exec_context
),
4220 .cgroup_context_offset
= offsetof(Service
, cgroup_context
),
4221 .kill_context_offset
= offsetof(Service
, kill_context
),
4222 .exec_runtime_offset
= offsetof(Service
, exec_runtime
),
4223 .dynamic_creds_offset
= offsetof(Service
, dynamic_creds
),
4229 .private_section
= "Service",
4231 .can_transient
= true,
4232 .can_delegate
= true,
4234 .init
= service_init
,
4235 .done
= service_done
,
4236 .load
= service_load
,
4237 .release_resources
= service_release_resources
,
4239 .coldplug
= service_coldplug
,
4241 .dump
= service_dump
,
4243 .start
= service_start
,
4244 .stop
= service_stop
,
4245 .reload
= service_reload
,
4247 .can_reload
= service_can_reload
,
4249 .kill
= service_kill
,
4251 .serialize
= service_serialize
,
4252 .deserialize_item
= service_deserialize_item
,
4254 .active_state
= service_active_state
,
4255 .sub_state_to_string
= service_sub_state_to_string
,
4257 .will_restart
= service_will_restart
,
4259 .may_gc
= service_may_gc
,
4261 .sigchld_event
= service_sigchld_event
,
4263 .reset_failed
= service_reset_failed
,
4265 .notify_cgroup_empty
= service_notify_cgroup_empty_event
,
4266 .notify_cgroup_oom
= service_notify_cgroup_oom_event
,
4267 .notify_message
= service_notify_message
,
4269 .main_pid
= service_main_pid
,
4270 .control_pid
= service_control_pid
,
4272 .bus_name_owner_change
= service_bus_name_owner_change
,
4274 .bus_vtable
= bus_service_vtable
,
4275 .bus_set_property
= bus_service_set_property
,
4276 .bus_commit_properties
= bus_service_commit_properties
,
4278 .get_timeout
= service_get_timeout
,
4279 .needs_console
= service_needs_console
,
4280 .exit_status
= service_exit_status
,
4282 .status_message_formats
= {
4283 .starting_stopping
= {
4284 [0] = "Starting %s...",
4285 [1] = "Stopping %s...",
4287 .finished_start_job
= {
4288 [JOB_DONE
] = "Started %s.",
4289 [JOB_FAILED
] = "Failed to start %s.",
4291 .finished_stop_job
= {
4292 [JOB_DONE
] = "Stopped %s.",
4293 [JOB_FAILED
] = "Stopped (with error) %s.",