2 This file is part of systemd.
4 Copyright 2010 Lennart Poettering
6 systemd is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
9 (at your option) any later version.
11 systemd is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with systemd; If not, see <http://www.gnu.org/licenses/>.
24 #include "alloc-util.h"
26 #include "bus-error.h"
27 #include "bus-kernel.h"
29 #include "dbus-service.h"
33 #include "exit-status.h"
36 #include "formats-util.h"
38 #include "load-dropin.h"
39 #include "load-fragment.h"
42 #include "parse-util.h"
43 #include "path-util.h"
44 #include "process-util.h"
46 #include "signal-util.h"
48 #include "string-table.h"
49 #include "string-util.h"
51 #include "unit-name.h"
52 #include "unit-printf.h"
57 static const UnitActiveState state_translation_table
[_SERVICE_STATE_MAX
] = {
58 [SERVICE_DEAD
] = UNIT_INACTIVE
,
59 [SERVICE_START_PRE
] = UNIT_ACTIVATING
,
60 [SERVICE_START
] = UNIT_ACTIVATING
,
61 [SERVICE_START_POST
] = UNIT_ACTIVATING
,
62 [SERVICE_RUNNING
] = UNIT_ACTIVE
,
63 [SERVICE_EXITED
] = UNIT_ACTIVE
,
64 [SERVICE_RELOAD
] = UNIT_RELOADING
,
65 [SERVICE_STOP
] = UNIT_DEACTIVATING
,
66 [SERVICE_STOP_SIGABRT
] = UNIT_DEACTIVATING
,
67 [SERVICE_STOP_SIGTERM
] = UNIT_DEACTIVATING
,
68 [SERVICE_STOP_SIGKILL
] = UNIT_DEACTIVATING
,
69 [SERVICE_STOP_POST
] = UNIT_DEACTIVATING
,
70 [SERVICE_FINAL_SIGTERM
] = UNIT_DEACTIVATING
,
71 [SERVICE_FINAL_SIGKILL
] = UNIT_DEACTIVATING
,
72 [SERVICE_FAILED
] = UNIT_FAILED
,
73 [SERVICE_AUTO_RESTART
] = UNIT_ACTIVATING
76 /* For Type=idle we never want to delay any other jobs, hence we
77 * consider idle jobs active as soon as we start working on them */
78 static const UnitActiveState state_translation_table_idle
[_SERVICE_STATE_MAX
] = {
79 [SERVICE_DEAD
] = UNIT_INACTIVE
,
80 [SERVICE_START_PRE
] = UNIT_ACTIVE
,
81 [SERVICE_START
] = UNIT_ACTIVE
,
82 [SERVICE_START_POST
] = UNIT_ACTIVE
,
83 [SERVICE_RUNNING
] = UNIT_ACTIVE
,
84 [SERVICE_EXITED
] = UNIT_ACTIVE
,
85 [SERVICE_RELOAD
] = UNIT_RELOADING
,
86 [SERVICE_STOP
] = UNIT_DEACTIVATING
,
87 [SERVICE_STOP_SIGABRT
] = UNIT_DEACTIVATING
,
88 [SERVICE_STOP_SIGTERM
] = UNIT_DEACTIVATING
,
89 [SERVICE_STOP_SIGKILL
] = UNIT_DEACTIVATING
,
90 [SERVICE_STOP_POST
] = UNIT_DEACTIVATING
,
91 [SERVICE_FINAL_SIGTERM
] = UNIT_DEACTIVATING
,
92 [SERVICE_FINAL_SIGKILL
] = UNIT_DEACTIVATING
,
93 [SERVICE_FAILED
] = UNIT_FAILED
,
94 [SERVICE_AUTO_RESTART
] = UNIT_ACTIVATING
97 static int service_dispatch_io(sd_event_source
*source
, int fd
, uint32_t events
, void *userdata
);
98 static int service_dispatch_timer(sd_event_source
*source
, usec_t usec
, void *userdata
);
99 static int service_dispatch_watchdog(sd_event_source
*source
, usec_t usec
, void *userdata
);
101 static void service_enter_signal(Service
*s
, ServiceState state
, ServiceResult f
);
102 static void service_enter_reload_by_notify(Service
*s
);
104 static void service_init(Unit
*u
) {
105 Service
*s
= SERVICE(u
);
108 assert(u
->load_state
== UNIT_STUB
);
110 s
->timeout_start_usec
= u
->manager
->default_timeout_start_usec
;
111 s
->timeout_stop_usec
= u
->manager
->default_timeout_stop_usec
;
112 s
->restart_usec
= u
->manager
->default_restart_usec
;
113 s
->runtime_max_usec
= USEC_INFINITY
;
114 s
->type
= _SERVICE_TYPE_INVALID
;
116 s
->stdin_fd
= s
->stdout_fd
= s
->stderr_fd
= -1;
117 s
->guess_main_pid
= true;
119 s
->control_command_id
= _SERVICE_EXEC_COMMAND_INVALID
;
122 static void service_unwatch_control_pid(Service
*s
) {
125 if (s
->control_pid
<= 0)
128 unit_unwatch_pid(UNIT(s
), s
->control_pid
);
132 static void service_unwatch_main_pid(Service
*s
) {
135 if (s
->main_pid
<= 0)
138 unit_unwatch_pid(UNIT(s
), s
->main_pid
);
142 static void service_unwatch_pid_file(Service
*s
) {
143 if (!s
->pid_file_pathspec
)
146 log_unit_debug(UNIT(s
), "Stopping watch for PID file %s", s
->pid_file_pathspec
->path
);
147 path_spec_unwatch(s
->pid_file_pathspec
);
148 path_spec_done(s
->pid_file_pathspec
);
149 s
->pid_file_pathspec
= mfree(s
->pid_file_pathspec
);
152 static int service_set_main_pid(Service
*s
, pid_t pid
) {
163 if (s
->main_pid
== pid
&& s
->main_pid_known
)
166 if (s
->main_pid
!= pid
) {
167 service_unwatch_main_pid(s
);
168 exec_status_start(&s
->main_exec_status
, pid
);
172 s
->main_pid_known
= true;
174 if (get_process_ppid(pid
, &ppid
) >= 0 && ppid
!= getpid()) {
175 log_unit_warning(UNIT(s
), "Supervising process "PID_FMT
" which is not our child. We'll most likely not notice when it exits.", pid
);
176 s
->main_pid_alien
= true;
178 s
->main_pid_alien
= false;
183 void service_close_socket_fd(Service
*s
) {
186 /* Undo the effect of service_set_socket_fd(). */
188 s
->socket_fd
= asynchronous_close(s
->socket_fd
);
190 if (UNIT_ISSET(s
->accept_socket
)) {
191 socket_connection_unref(SOCKET(UNIT_DEREF(s
->accept_socket
)));
192 unit_ref_unset(&s
->accept_socket
);
196 static void service_stop_watchdog(Service
*s
) {
199 s
->watchdog_event_source
= sd_event_source_unref(s
->watchdog_event_source
);
200 s
->watchdog_timestamp
= DUAL_TIMESTAMP_NULL
;
203 static usec_t
service_get_watchdog_usec(Service
*s
) {
206 if (s
->watchdog_override_enable
)
207 return s
->watchdog_override_usec
;
209 return s
->watchdog_usec
;
212 static void service_start_watchdog(Service
*s
) {
214 usec_t watchdog_usec
;
218 watchdog_usec
= service_get_watchdog_usec(s
);
219 if (watchdog_usec
== 0 || watchdog_usec
== USEC_INFINITY
)
222 if (s
->watchdog_event_source
) {
223 r
= sd_event_source_set_time(s
->watchdog_event_source
, usec_add(s
->watchdog_timestamp
.monotonic
, watchdog_usec
));
225 log_unit_warning_errno(UNIT(s
), r
, "Failed to reset watchdog timer: %m");
229 r
= sd_event_source_set_enabled(s
->watchdog_event_source
, SD_EVENT_ONESHOT
);
231 r
= sd_event_add_time(
232 UNIT(s
)->manager
->event
,
233 &s
->watchdog_event_source
,
235 usec_add(s
->watchdog_timestamp
.monotonic
, watchdog_usec
), 0,
236 service_dispatch_watchdog
, s
);
238 log_unit_warning_errno(UNIT(s
), r
, "Failed to add watchdog timer: %m");
242 (void) sd_event_source_set_description(s
->watchdog_event_source
, "service-watchdog");
244 /* Let's process everything else which might be a sign
245 * of living before we consider a service died. */
246 r
= sd_event_source_set_priority(s
->watchdog_event_source
, SD_EVENT_PRIORITY_IDLE
);
250 log_unit_warning_errno(UNIT(s
), r
, "Failed to install watchdog timer: %m");
253 static void service_reset_watchdog(Service
*s
) {
256 dual_timestamp_get(&s
->watchdog_timestamp
);
257 service_start_watchdog(s
);
260 static void service_reset_watchdog_timeout(Service
*s
, usec_t watchdog_override_usec
) {
263 s
->watchdog_override_enable
= true;
264 s
->watchdog_override_usec
= watchdog_override_usec
;
265 service_reset_watchdog(s
);
267 log_unit_debug(UNIT(s
), "watchdog_usec="USEC_FMT
, s
->watchdog_usec
);
268 log_unit_debug(UNIT(s
), "watchdog_override_usec="USEC_FMT
, s
->watchdog_override_usec
);
271 static void service_fd_store_unlink(ServiceFDStore
*fs
) {
277 assert(fs
->service
->n_fd_store
> 0);
278 LIST_REMOVE(fd_store
, fs
->service
->fd_store
, fs
);
279 fs
->service
->n_fd_store
--;
282 if (fs
->event_source
) {
283 sd_event_source_set_enabled(fs
->event_source
, SD_EVENT_OFF
);
284 sd_event_source_unref(fs
->event_source
);
292 static void service_release_resources(Unit
*u
) {
293 Service
*s
= SERVICE(u
);
297 if (!s
->fd_store
&& s
->stdin_fd
< 0 && s
->stdout_fd
< 0 && s
->stderr_fd
< 0)
300 log_unit_debug(u
, "Releasing all resources.");
302 s
->stdin_fd
= safe_close(s
->stdin_fd
);
303 s
->stdout_fd
= safe_close(s
->stdout_fd
);
304 s
->stderr_fd
= safe_close(s
->stderr_fd
);
307 service_fd_store_unlink(s
->fd_store
);
309 assert(s
->n_fd_store
== 0);
312 static void service_done(Unit
*u
) {
313 Service
*s
= SERVICE(u
);
317 s
->pid_file
= mfree(s
->pid_file
);
318 s
->status_text
= mfree(s
->status_text
);
320 s
->exec_runtime
= exec_runtime_unref(s
->exec_runtime
);
321 exec_command_free_array(s
->exec_command
, _SERVICE_EXEC_COMMAND_MAX
);
322 s
->control_command
= NULL
;
323 s
->main_command
= NULL
;
325 dynamic_creds_unref(&s
->dynamic_creds
);
327 exit_status_set_free(&s
->restart_prevent_status
);
328 exit_status_set_free(&s
->restart_force_status
);
329 exit_status_set_free(&s
->success_status
);
331 /* This will leak a process, but at least no memory or any of
333 service_unwatch_main_pid(s
);
334 service_unwatch_control_pid(s
);
335 service_unwatch_pid_file(s
);
338 unit_unwatch_bus_name(u
, s
->bus_name
);
339 s
->bus_name
= mfree(s
->bus_name
);
342 s
->bus_name_owner
= mfree(s
->bus_name_owner
);
344 service_close_socket_fd(s
);
345 s
->peer
= socket_peer_unref(s
->peer
);
347 unit_ref_unset(&s
->accept_socket
);
349 service_stop_watchdog(s
);
351 s
->timer_event_source
= sd_event_source_unref(s
->timer_event_source
);
353 service_release_resources(u
);
356 static int on_fd_store_io(sd_event_source
*e
, int fd
, uint32_t revents
, void *userdata
) {
357 ServiceFDStore
*fs
= userdata
;
362 /* If we get either EPOLLHUP or EPOLLERR, it's time to remove this entry from the fd store */
363 service_fd_store_unlink(fs
);
367 static int service_add_fd_store(Service
*s
, int fd
, const char *name
) {
374 if (s
->n_fd_store
>= s
->n_fd_store_max
)
377 LIST_FOREACH(fd_store
, fs
, s
->fd_store
) {
378 r
= same_fd(fs
->fd
, fd
);
382 /* Already included */
388 fs
= new0(ServiceFDStore
, 1);
394 fs
->fdname
= strdup(name
?: "stored");
400 r
= sd_event_add_io(UNIT(s
)->manager
->event
, &fs
->event_source
, fd
, 0, on_fd_store_io
, fs
);
407 (void) sd_event_source_set_description(fs
->event_source
, "service-fd-store");
409 LIST_PREPEND(fd_store
, s
->fd_store
, fs
);
415 static int service_add_fd_store_set(Service
*s
, FDSet
*fds
, const char *name
) {
420 if (fdset_size(fds
) <= 0)
423 while (s
->n_fd_store
< s
->n_fd_store_max
) {
424 _cleanup_close_
int fd
= -1;
426 fd
= fdset_steal_first(fds
);
430 r
= service_add_fd_store(s
, fd
, name
);
432 return log_unit_error_errno(UNIT(s
), r
, "Couldn't add fd to fd store: %m");
434 log_unit_debug(UNIT(s
), "Added fd to fd store.");
439 if (fdset_size(fds
) > 0)
440 log_unit_warning(UNIT(s
), "Tried to store more fds than FileDescriptorStoreMax=%u allows, closing remaining.", s
->n_fd_store_max
);
445 static int service_arm_timer(Service
*s
, usec_t usec
) {
450 if (s
->timer_event_source
) {
451 r
= sd_event_source_set_time(s
->timer_event_source
, usec
);
455 return sd_event_source_set_enabled(s
->timer_event_source
, SD_EVENT_ONESHOT
);
458 if (usec
== USEC_INFINITY
)
461 r
= sd_event_add_time(
462 UNIT(s
)->manager
->event
,
463 &s
->timer_event_source
,
466 service_dispatch_timer
, s
);
470 (void) sd_event_source_set_description(s
->timer_event_source
, "service-timer");
475 static int service_verify(Service
*s
) {
478 if (UNIT(s
)->load_state
!= UNIT_LOADED
)
481 if (!s
->exec_command
[SERVICE_EXEC_START
] && !s
->exec_command
[SERVICE_EXEC_STOP
]) {
482 log_unit_error(UNIT(s
), "Service lacks both ExecStart= and ExecStop= setting. Refusing.");
486 if (s
->type
!= SERVICE_ONESHOT
&& !s
->exec_command
[SERVICE_EXEC_START
]) {
487 log_unit_error(UNIT(s
), "Service has no ExecStart= setting, which is only allowed for Type=oneshot services. Refusing.");
491 if (!s
->remain_after_exit
&& !s
->exec_command
[SERVICE_EXEC_START
]) {
492 log_unit_error(UNIT(s
), "Service has no ExecStart= setting, which is only allowed for RemainAfterExit=yes services. Refusing.");
496 if (s
->type
!= SERVICE_ONESHOT
&& s
->exec_command
[SERVICE_EXEC_START
]->command_next
) {
497 log_unit_error(UNIT(s
), "Service has more than one ExecStart= setting, which is only allowed for Type=oneshot services. Refusing.");
501 if (s
->type
== SERVICE_ONESHOT
&& s
->restart
!= SERVICE_RESTART_NO
) {
502 log_unit_error(UNIT(s
), "Service has Restart= setting other than no, which isn't allowed for Type=oneshot services. Refusing.");
506 if (s
->type
== SERVICE_ONESHOT
&& !exit_status_set_is_empty(&s
->restart_force_status
)) {
507 log_unit_error(UNIT(s
), "Service has RestartForceStatus= set, which isn't allowed for Type=oneshot services. Refusing.");
511 if (s
->type
== SERVICE_DBUS
&& !s
->bus_name
) {
512 log_unit_error(UNIT(s
), "Service is of type D-Bus but no D-Bus service name has been specified. Refusing.");
516 if (s
->bus_name
&& s
->type
!= SERVICE_DBUS
)
517 log_unit_warning(UNIT(s
), "Service has a D-Bus service name specified, but is not of type dbus. Ignoring.");
519 if (s
->exec_context
.pam_name
&& !(s
->kill_context
.kill_mode
== KILL_CONTROL_GROUP
|| s
->kill_context
.kill_mode
== KILL_MIXED
)) {
520 log_unit_error(UNIT(s
), "Service has PAM enabled. Kill mode must be set to 'control-group' or 'mixed'. Refusing.");
524 if (s
->usb_function_descriptors
&& !s
->usb_function_strings
)
525 log_unit_warning(UNIT(s
), "Service has USBFunctionDescriptors= setting, but no USBFunctionStrings=. Ignoring.");
527 if (!s
->usb_function_descriptors
&& s
->usb_function_strings
)
528 log_unit_warning(UNIT(s
), "Service has USBFunctionStrings= setting, but no USBFunctionDescriptors=. Ignoring.");
530 if (s
->runtime_max_usec
!= USEC_INFINITY
&& s
->type
== SERVICE_ONESHOT
)
531 log_unit_warning(UNIT(s
), "MaxRuntimeSec= has no effect in combination with Type=oneshot. Ignoring.");
536 static int service_add_default_dependencies(Service
*s
) {
541 if (!UNIT(s
)->default_dependencies
)
544 /* Add a number of automatic dependencies useful for the
545 * majority of services. */
547 if (MANAGER_IS_SYSTEM(UNIT(s
)->manager
)) {
548 /* First, pull in the really early boot stuff, and
549 * require it, so that we fail if we can't acquire
552 r
= unit_add_two_dependencies_by_name(UNIT(s
), UNIT_AFTER
, UNIT_REQUIRES
, SPECIAL_SYSINIT_TARGET
, NULL
, true);
557 /* In the --user instance there's no sysinit.target,
558 * in that case require basic.target instead. */
560 r
= unit_add_dependency_by_name(UNIT(s
), UNIT_REQUIRES
, SPECIAL_BASIC_TARGET
, NULL
, true);
565 /* Second, if the rest of the base system is in the same
566 * transaction, order us after it, but do not pull it in or
567 * even require it. */
568 r
= unit_add_dependency_by_name(UNIT(s
), UNIT_AFTER
, SPECIAL_BASIC_TARGET
, NULL
, true);
572 /* Third, add us in for normal shutdown. */
573 return unit_add_two_dependencies_by_name(UNIT(s
), UNIT_BEFORE
, UNIT_CONFLICTS
, SPECIAL_SHUTDOWN_TARGET
, NULL
, true);
576 static void service_fix_output(Service
*s
) {
579 /* If nothing has been explicitly configured, patch default
580 * output in. If input is socket/tty we avoid this however,
581 * since in that case we want output to default to the same
582 * place as we read input from. */
584 if (s
->exec_context
.std_error
== EXEC_OUTPUT_INHERIT
&&
585 s
->exec_context
.std_output
== EXEC_OUTPUT_INHERIT
&&
586 s
->exec_context
.std_input
== EXEC_INPUT_NULL
)
587 s
->exec_context
.std_error
= UNIT(s
)->manager
->default_std_error
;
589 if (s
->exec_context
.std_output
== EXEC_OUTPUT_INHERIT
&&
590 s
->exec_context
.std_input
== EXEC_INPUT_NULL
)
591 s
->exec_context
.std_output
= UNIT(s
)->manager
->default_std_output
;
594 static int service_setup_bus_name(Service
*s
) {
602 r
= unit_add_dependency_by_name(UNIT(s
), UNIT_REQUIRES
, SPECIAL_DBUS_SOCKET
, NULL
, true);
604 return log_unit_error_errno(UNIT(s
), r
, "Failed to add dependency on " SPECIAL_DBUS_SOCKET
": %m");
606 /* Regardless if kdbus is used or not, we always want to be ordered against dbus.socket if both are in the transaction. */
607 r
= unit_add_dependency_by_name(UNIT(s
), UNIT_AFTER
, SPECIAL_DBUS_SOCKET
, NULL
, true);
609 return log_unit_error_errno(UNIT(s
), r
, "Failed to add dependency on " SPECIAL_DBUS_SOCKET
": %m");
611 r
= unit_watch_bus_name(UNIT(s
), s
->bus_name
);
613 return log_unit_error_errno(UNIT(s
), r
, "Two services allocated for the same bus name %s, refusing operation.", s
->bus_name
);
615 return log_unit_error_errno(UNIT(s
), r
, "Cannot watch bus name %s: %m", s
->bus_name
);
620 static int service_add_extras(Service
*s
) {
625 if (s
->type
== _SERVICE_TYPE_INVALID
) {
626 /* Figure out a type automatically */
628 s
->type
= SERVICE_DBUS
;
629 else if (s
->exec_command
[SERVICE_EXEC_START
])
630 s
->type
= SERVICE_SIMPLE
;
632 s
->type
= SERVICE_ONESHOT
;
635 /* Oneshot services have disabled start timeout by default */
636 if (s
->type
== SERVICE_ONESHOT
&& !s
->start_timeout_defined
)
637 s
->timeout_start_usec
= USEC_INFINITY
;
639 service_fix_output(s
);
641 r
= unit_patch_contexts(UNIT(s
));
645 r
= unit_add_exec_dependencies(UNIT(s
), &s
->exec_context
);
649 r
= unit_set_default_slice(UNIT(s
));
653 if (s
->type
== SERVICE_NOTIFY
&& s
->notify_access
== NOTIFY_NONE
)
654 s
->notify_access
= NOTIFY_MAIN
;
656 if (s
->watchdog_usec
> 0 && s
->notify_access
== NOTIFY_NONE
)
657 s
->notify_access
= NOTIFY_MAIN
;
659 r
= service_add_default_dependencies(s
);
663 r
= service_setup_bus_name(s
);
670 static int service_load(Unit
*u
) {
671 Service
*s
= SERVICE(u
);
676 /* Load a .service file */
677 r
= unit_load_fragment(u
);
681 /* Still nothing found? Then let's give up */
682 if (u
->load_state
== UNIT_STUB
)
685 /* This is a new unit? Then let's add in some extras */
686 if (u
->load_state
== UNIT_LOADED
) {
688 /* We were able to load something, then let's add in
689 * the dropin directories. */
690 r
= unit_load_dropin(u
);
694 /* This is a new unit? Then let's add in some
696 r
= service_add_extras(s
);
701 return service_verify(s
);
704 static void service_dump(Unit
*u
, FILE *f
, const char *prefix
) {
705 ServiceExecCommand c
;
706 Service
*s
= SERVICE(u
);
711 prefix
= strempty(prefix
);
712 prefix2
= strjoina(prefix
, "\t");
715 "%sService State: %s\n"
717 "%sReload Result: %s\n"
718 "%sPermissionsStartOnly: %s\n"
719 "%sRootDirectoryStartOnly: %s\n"
720 "%sRemainAfterExit: %s\n"
721 "%sGuessMainPID: %s\n"
724 "%sNotifyAccess: %s\n"
725 "%sNotifyState: %s\n",
726 prefix
, service_state_to_string(s
->state
),
727 prefix
, service_result_to_string(s
->result
),
728 prefix
, service_result_to_string(s
->reload_result
),
729 prefix
, yes_no(s
->permissions_start_only
),
730 prefix
, yes_no(s
->root_directory_start_only
),
731 prefix
, yes_no(s
->remain_after_exit
),
732 prefix
, yes_no(s
->guess_main_pid
),
733 prefix
, service_type_to_string(s
->type
),
734 prefix
, service_restart_to_string(s
->restart
),
735 prefix
, notify_access_to_string(s
->notify_access
),
736 prefix
, notify_state_to_string(s
->notify_state
));
738 if (s
->control_pid
> 0)
740 "%sControl PID: "PID_FMT
"\n",
741 prefix
, s
->control_pid
);
745 "%sMain PID: "PID_FMT
"\n"
746 "%sMain PID Known: %s\n"
747 "%sMain PID Alien: %s\n",
749 prefix
, yes_no(s
->main_pid_known
),
750 prefix
, yes_no(s
->main_pid_alien
));
755 prefix
, s
->pid_file
);
760 "%sBus Name Good: %s\n",
762 prefix
, yes_no(s
->bus_name_good
));
764 if (UNIT_ISSET(s
->accept_socket
))
766 "%sAccept Socket: %s\n",
767 prefix
, UNIT_DEREF(s
->accept_socket
)->id
);
769 kill_context_dump(&s
->kill_context
, f
, prefix
);
770 exec_context_dump(&s
->exec_context
, f
, prefix
);
772 for (c
= 0; c
< _SERVICE_EXEC_COMMAND_MAX
; c
++) {
774 if (!s
->exec_command
[c
])
777 fprintf(f
, "%s-> %s:\n",
778 prefix
, service_exec_command_to_string(c
));
780 exec_command_dump_list(s
->exec_command
[c
], f
, prefix2
);
784 fprintf(f
, "%sStatus Text: %s\n",
785 prefix
, s
->status_text
);
787 if (s
->n_fd_store_max
> 0)
789 "%sFile Descriptor Store Max: %u\n"
790 "%sFile Descriptor Store Current: %u\n",
791 prefix
, s
->n_fd_store_max
,
792 prefix
, s
->n_fd_store
);
795 static int service_load_pid_file(Service
*s
, bool may_warn
) {
796 _cleanup_free_
char *k
= NULL
;
805 r
= read_one_line_file(s
->pid_file
, &k
);
808 log_unit_info_errno(UNIT(s
), r
, "PID file %s not readable (yet?) after %s: %m", s
->pid_file
, service_state_to_string(s
->state
));
812 r
= parse_pid(k
, &pid
);
815 log_unit_info_errno(UNIT(s
), r
, "Failed to read PID from file %s: %m", s
->pid_file
);
819 if (!pid_is_alive(pid
)) {
821 log_unit_info(UNIT(s
), "PID "PID_FMT
" read from file %s does not exist or is a zombie.", pid
, s
->pid_file
);
825 if (s
->main_pid_known
) {
826 if (pid
== s
->main_pid
)
829 log_unit_debug(UNIT(s
), "Main PID changing: "PID_FMT
" -> "PID_FMT
, s
->main_pid
, pid
);
831 service_unwatch_main_pid(s
);
832 s
->main_pid_known
= false;
834 log_unit_debug(UNIT(s
), "Main PID loaded: "PID_FMT
, pid
);
836 r
= service_set_main_pid(s
, pid
);
840 r
= unit_watch_pid(UNIT(s
), pid
);
842 /* FIXME: we need to do something here */
843 log_unit_warning_errno(UNIT(s
), r
, "Failed to watch PID "PID_FMT
" for service: %m", pid
);
850 static void service_search_main_pid(Service
*s
) {
856 /* If we know it anyway, don't ever fallback to unreliable
858 if (s
->main_pid_known
)
861 if (!s
->guess_main_pid
)
864 assert(s
->main_pid
<= 0);
866 if (unit_search_main_pid(UNIT(s
), &pid
) < 0)
869 log_unit_debug(UNIT(s
), "Main PID guessed: "PID_FMT
, pid
);
870 if (service_set_main_pid(s
, pid
) < 0)
873 r
= unit_watch_pid(UNIT(s
), pid
);
875 /* FIXME: we need to do something here */
876 log_unit_warning_errno(UNIT(s
), r
, "Failed to watch PID "PID_FMT
" from: %m", pid
);
879 static void service_set_state(Service
*s
, ServiceState state
) {
880 ServiceState old_state
;
881 const UnitActiveState
*table
;
885 table
= s
->type
== SERVICE_IDLE
? state_translation_table_idle
: state_translation_table
;
887 old_state
= s
->state
;
890 service_unwatch_pid_file(s
);
893 SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
,
896 SERVICE_STOP
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
897 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
,
898 SERVICE_AUTO_RESTART
))
899 s
->timer_event_source
= sd_event_source_unref(s
->timer_event_source
);
902 SERVICE_START
, SERVICE_START_POST
,
903 SERVICE_RUNNING
, SERVICE_RELOAD
,
904 SERVICE_STOP
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
905 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
)) {
906 service_unwatch_main_pid(s
);
907 s
->main_command
= NULL
;
911 SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
,
913 SERVICE_STOP
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
914 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
)) {
915 service_unwatch_control_pid(s
);
916 s
->control_command
= NULL
;
917 s
->control_command_id
= _SERVICE_EXEC_COMMAND_INVALID
;
920 if (IN_SET(state
, SERVICE_DEAD
, SERVICE_FAILED
, SERVICE_AUTO_RESTART
))
921 unit_unwatch_all_pids(UNIT(s
));
924 SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
,
925 SERVICE_RUNNING
, SERVICE_RELOAD
,
926 SERVICE_STOP
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
927 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
) &&
928 !(state
== SERVICE_DEAD
&& UNIT(s
)->job
))
929 service_close_socket_fd(s
);
931 if (!IN_SET(state
, SERVICE_START_POST
, SERVICE_RUNNING
, SERVICE_RELOAD
))
932 service_stop_watchdog(s
);
934 /* For the inactive states unit_notify() will trim the cgroup,
935 * but for exit we have to do that ourselves... */
936 if (state
== SERVICE_EXITED
&& !MANAGER_IS_RELOADING(UNIT(s
)->manager
))
937 unit_prune_cgroup(UNIT(s
));
939 /* For remain_after_exit services, let's see if we can "release" the
940 * hold on the console, since unit_notify() only does that in case of
942 if (state
== SERVICE_EXITED
&&
943 s
->remain_after_exit
&&
944 UNIT(s
)->manager
->n_on_console
> 0) {
948 ec
= unit_get_exec_context(UNIT(s
));
949 if (ec
&& exec_context_may_touch_console(ec
)) {
950 Manager
*m
= UNIT(s
)->manager
;
953 if (m
->n_on_console
== 0)
954 /* unset no_console_output flag, since the console is free */
955 m
->no_console_output
= false;
959 if (old_state
!= state
)
960 log_unit_debug(UNIT(s
), "Changed %s -> %s", service_state_to_string(old_state
), service_state_to_string(state
));
962 unit_notify(UNIT(s
), table
[old_state
], table
[state
], s
->reload_result
== SERVICE_SUCCESS
);
965 static usec_t
service_coldplug_timeout(Service
*s
) {
968 switch (s
->deserialized_state
) {
970 case SERVICE_START_PRE
:
972 case SERVICE_START_POST
:
974 return usec_add(UNIT(s
)->state_change_timestamp
.monotonic
, s
->timeout_start_usec
);
976 case SERVICE_RUNNING
:
977 return usec_add(UNIT(s
)->active_enter_timestamp
.monotonic
, s
->runtime_max_usec
);
980 case SERVICE_STOP_SIGABRT
:
981 case SERVICE_STOP_SIGTERM
:
982 case SERVICE_STOP_SIGKILL
:
983 case SERVICE_STOP_POST
:
984 case SERVICE_FINAL_SIGTERM
:
985 case SERVICE_FINAL_SIGKILL
:
986 return usec_add(UNIT(s
)->state_change_timestamp
.monotonic
, s
->timeout_stop_usec
);
988 case SERVICE_AUTO_RESTART
:
989 return usec_add(UNIT(s
)->inactive_enter_timestamp
.monotonic
, s
->restart_usec
);
992 return USEC_INFINITY
;
996 static int service_coldplug(Unit
*u
) {
997 Service
*s
= SERVICE(u
);
1001 assert(s
->state
== SERVICE_DEAD
);
1003 if (s
->deserialized_state
== s
->state
)
1006 r
= service_arm_timer(s
, service_coldplug_timeout(s
));
1010 if (s
->main_pid
> 0 &&
1011 pid_is_unwaited(s
->main_pid
) &&
1012 ((s
->deserialized_state
== SERVICE_START
&& IN_SET(s
->type
, SERVICE_FORKING
, SERVICE_DBUS
, SERVICE_ONESHOT
, SERVICE_NOTIFY
)) ||
1013 IN_SET(s
->deserialized_state
,
1014 SERVICE_START
, SERVICE_START_POST
,
1015 SERVICE_RUNNING
, SERVICE_RELOAD
,
1016 SERVICE_STOP
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
1017 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
))) {
1018 r
= unit_watch_pid(UNIT(s
), s
->main_pid
);
1023 if (s
->control_pid
> 0 &&
1024 pid_is_unwaited(s
->control_pid
) &&
1025 IN_SET(s
->deserialized_state
,
1026 SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
,
1028 SERVICE_STOP
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
1029 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
)) {
1030 r
= unit_watch_pid(UNIT(s
), s
->control_pid
);
1035 if (!IN_SET(s
->deserialized_state
, SERVICE_DEAD
, SERVICE_FAILED
, SERVICE_AUTO_RESTART
))
1036 unit_watch_all_pids(UNIT(s
));
1038 if (IN_SET(s
->deserialized_state
, SERVICE_START_POST
, SERVICE_RUNNING
, SERVICE_RELOAD
))
1039 service_start_watchdog(s
);
1041 if (!IN_SET(s
->deserialized_state
, SERVICE_DEAD
, SERVICE_FAILED
, SERVICE_AUTO_RESTART
))
1042 (void) unit_setup_dynamic_creds(u
);
1044 if (UNIT_ISSET(s
->accept_socket
)) {
1045 Socket
* socket
= SOCKET(UNIT_DEREF(s
->accept_socket
));
1047 if (socket
->max_connections_per_source
> 0) {
1050 /* Make a best-effort attempt at bumping the connection count */
1051 if (socket_acquire_peer(socket
, s
->socket_fd
, &peer
) > 0) {
1052 socket_peer_unref(s
->peer
);
1058 service_set_state(s
, s
->deserialized_state
);
1062 static int service_collect_fds(Service
*s
, int **fds
, char ***fd_names
) {
1063 _cleanup_strv_free_
char **rfd_names
= NULL
;
1064 _cleanup_free_
int *rfds
= NULL
;
1071 if (s
->socket_fd
>= 0) {
1073 /* Pass the per-connection socket */
1078 rfds
[0] = s
->socket_fd
;
1080 rfd_names
= strv_new("connection", NULL
);
1089 /* Pass all our configured sockets for singleton services */
1091 SET_FOREACH(u
, UNIT(s
)->dependencies
[UNIT_TRIGGERED_BY
], i
) {
1092 _cleanup_free_
int *cfds
= NULL
;
1096 if (u
->type
!= UNIT_SOCKET
)
1101 cn_fds
= socket_collect_fds(sock
, &cfds
);
1116 t
= realloc(rfds
, (rn_fds
+ cn_fds
) * sizeof(int));
1120 memcpy(t
+ rn_fds
, cfds
, cn_fds
* sizeof(int));
1126 r
= strv_extend_n(&rfd_names
, socket_fdname(sock
), cn_fds
);
1132 if (s
->n_fd_store
> 0) {
1137 t
= realloc(rfds
, (rn_fds
+ s
->n_fd_store
) * sizeof(int));
1143 nl
= realloc(rfd_names
, (rn_fds
+ s
->n_fd_store
+ 1) * sizeof(char*));
1149 LIST_FOREACH(fd_store
, fs
, s
->fd_store
) {
1150 rfds
[rn_fds
] = fs
->fd
;
1151 rfd_names
[rn_fds
] = strdup(strempty(fs
->fdname
));
1152 if (!rfd_names
[rn_fds
])
1158 rfd_names
[rn_fds
] = NULL
;
1162 *fd_names
= rfd_names
;
1170 static int service_spawn(
1177 _cleanup_strv_free_
char **argv
= NULL
, **final_env
= NULL
, **our_env
= NULL
, **fd_names
= NULL
;
1178 _cleanup_free_
int *fds
= NULL
;
1179 unsigned n_fds
= 0, n_env
= 0;
1183 ExecParameters exec_params
= {
1196 if (flags
& EXEC_IS_CONTROL
) {
1197 /* If this is a control process, mask the permissions/chroot application if this is requested. */
1198 if (s
->permissions_start_only
)
1199 exec_params
.flags
&= ~EXEC_APPLY_PERMISSIONS
;
1200 if (s
->root_directory_start_only
)
1201 exec_params
.flags
&= ~EXEC_APPLY_CHROOT
;
1204 (void) unit_realize_cgroup(UNIT(s
));
1205 if (s
->reset_cpu_usage
) {
1206 (void) unit_reset_cpu_usage(UNIT(s
));
1207 s
->reset_cpu_usage
= false;
1210 r
= unit_setup_exec_runtime(UNIT(s
));
1214 r
= unit_setup_dynamic_creds(UNIT(s
));
1218 if ((flags
& EXEC_PASS_FDS
) ||
1219 s
->exec_context
.std_input
== EXEC_INPUT_SOCKET
||
1220 s
->exec_context
.std_output
== EXEC_OUTPUT_SOCKET
||
1221 s
->exec_context
.std_error
== EXEC_OUTPUT_SOCKET
) {
1223 r
= service_collect_fds(s
, &fds
, &fd_names
);
1230 r
= service_arm_timer(s
, usec_add(now(CLOCK_MONOTONIC
), timeout
));
1234 r
= unit_full_printf_strv(UNIT(s
), c
->argv
, &argv
);
1238 our_env
= new0(char*, 9);
1242 if ((flags
& EXEC_IS_CONTROL
) ? s
->notify_access
== NOTIFY_ALL
: s
->notify_access
!= NOTIFY_NONE
)
1243 if (asprintf(our_env
+ n_env
++, "NOTIFY_SOCKET=%s", UNIT(s
)->manager
->notify_socket
) < 0)
1246 if (s
->main_pid
> 0)
1247 if (asprintf(our_env
+ n_env
++, "MAINPID="PID_FMT
, s
->main_pid
) < 0)
1250 if (MANAGER_IS_USER(UNIT(s
)->manager
))
1251 if (asprintf(our_env
+ n_env
++, "MANAGERPID="PID_FMT
, getpid()) < 0)
1254 if (s
->socket_fd
>= 0) {
1255 union sockaddr_union sa
;
1256 socklen_t salen
= sizeof(sa
);
1258 r
= getpeername(s
->socket_fd
, &sa
.sa
, &salen
);
1262 /* ENOTCONN is legitimate if the endpoint disappeared on shutdown.
1263 * This connection is over, but the socket unit lives on. */
1264 if (r
!= -ENOTCONN
|| !IN_SET(s
->control_command_id
, SERVICE_EXEC_STOP
, SERVICE_EXEC_STOP_POST
))
1268 if (r
== 0 && IN_SET(sa
.sa
.sa_family
, AF_INET
, AF_INET6
)) {
1269 _cleanup_free_
char *addr
= NULL
;
1273 r
= sockaddr_pretty(&sa
.sa
, salen
, true, false, &addr
);
1277 t
= strappend("REMOTE_ADDR=", addr
);
1280 our_env
[n_env
++] = t
;
1282 port
= sockaddr_port(&sa
.sa
);
1286 if (asprintf(&t
, "REMOTE_PORT=%u", port
) < 0)
1288 our_env
[n_env
++] = t
;
1292 if (flags
& EXEC_SETENV_RESULT
) {
1293 if (asprintf(our_env
+ n_env
++, "SERVICE_RESULT=%s", service_result_to_string(s
->result
)) < 0)
1296 if (s
->main_exec_status
.pid
> 0 &&
1297 dual_timestamp_is_set(&s
->main_exec_status
.exit_timestamp
)) {
1298 if (asprintf(our_env
+ n_env
++, "EXIT_CODE=%s", sigchld_code_to_string(s
->main_exec_status
.code
)) < 0)
1301 if (s
->main_exec_status
.code
== CLD_EXITED
)
1302 r
= asprintf(our_env
+ n_env
++, "EXIT_STATUS=%i", s
->main_exec_status
.status
);
1304 r
= asprintf(our_env
+ n_env
++, "EXIT_STATUS=%s", signal_to_string(s
->main_exec_status
.status
));
1310 final_env
= strv_env_merge(2, UNIT(s
)->manager
->environment
, our_env
, NULL
);
1314 if ((flags
& EXEC_IS_CONTROL
) && UNIT(s
)->cgroup_path
) {
1315 path
= strjoina(UNIT(s
)->cgroup_path
, "/control");
1316 (void) cg_create(SYSTEMD_CGROUP_CONTROLLER
, path
);
1318 path
= UNIT(s
)->cgroup_path
;
1320 exec_params
.argv
= argv
;
1321 exec_params
.environment
= final_env
;
1322 exec_params
.fds
= fds
;
1323 exec_params
.fd_names
= fd_names
;
1324 exec_params
.n_fds
= n_fds
;
1325 exec_params
.flags
|= UNIT(s
)->manager
->confirm_spawn
? EXEC_CONFIRM_SPAWN
: 0;
1326 exec_params
.cgroup_supported
= UNIT(s
)->manager
->cgroup_supported
;
1327 exec_params
.cgroup_path
= path
;
1328 exec_params
.cgroup_delegate
= s
->cgroup_context
.delegate
;
1329 exec_params
.runtime_prefix
= manager_get_runtime_prefix(UNIT(s
)->manager
);
1330 exec_params
.watchdog_usec
= s
->watchdog_usec
;
1331 exec_params
.selinux_context_net
= s
->socket_fd_selinux_context_net
;
1332 if (s
->type
== SERVICE_IDLE
)
1333 exec_params
.idle_pipe
= UNIT(s
)->manager
->idle_pipe
;
1334 exec_params
.stdin_fd
= s
->stdin_fd
;
1335 exec_params
.stdout_fd
= s
->stdout_fd
;
1336 exec_params
.stderr_fd
= s
->stderr_fd
;
1338 r
= exec_spawn(UNIT(s
),
1348 r
= unit_watch_pid(UNIT(s
), pid
);
1350 /* FIXME: we need to do something here */
1358 static int main_pid_good(Service
*s
) {
1361 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1364 /* If we know the pid file, then let's just check if it is
1366 if (s
->main_pid_known
) {
1368 /* If it's an alien child let's check if it is still
1370 if (s
->main_pid_alien
&& s
->main_pid
> 0)
1371 return pid_is_alive(s
->main_pid
);
1373 /* .. otherwise assume we'll get a SIGCHLD for it,
1374 * which we really should wait for to collect exit
1375 * status and code */
1376 return s
->main_pid
> 0;
1379 /* We don't know the pid */
1383 _pure_
static int control_pid_good(Service
*s
) {
1386 return s
->control_pid
> 0;
1389 static int cgroup_good(Service
*s
) {
1394 if (!UNIT(s
)->cgroup_path
)
1397 r
= cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER
, UNIT(s
)->cgroup_path
);
1404 static bool service_shall_restart(Service
*s
) {
1407 /* Don't restart after manual stops */
1408 if (s
->forbid_restart
)
1411 /* Never restart if this is configured as special exception */
1412 if (exit_status_set_test(&s
->restart_prevent_status
, s
->main_exec_status
.code
, s
->main_exec_status
.status
))
1415 /* Restart if the exit code/status are configured as restart triggers */
1416 if (exit_status_set_test(&s
->restart_force_status
, s
->main_exec_status
.code
, s
->main_exec_status
.status
))
1419 switch (s
->restart
) {
1421 case SERVICE_RESTART_NO
:
1424 case SERVICE_RESTART_ALWAYS
:
1427 case SERVICE_RESTART_ON_SUCCESS
:
1428 return s
->result
== SERVICE_SUCCESS
;
1430 case SERVICE_RESTART_ON_FAILURE
:
1431 return s
->result
!= SERVICE_SUCCESS
;
1433 case SERVICE_RESTART_ON_ABNORMAL
:
1434 return !IN_SET(s
->result
, SERVICE_SUCCESS
, SERVICE_FAILURE_EXIT_CODE
);
1436 case SERVICE_RESTART_ON_WATCHDOG
:
1437 return s
->result
== SERVICE_FAILURE_WATCHDOG
;
1439 case SERVICE_RESTART_ON_ABORT
:
1440 return IN_SET(s
->result
, SERVICE_FAILURE_SIGNAL
, SERVICE_FAILURE_CORE_DUMP
);
1443 assert_not_reached("unknown restart setting");
1447 static void service_enter_dead(Service
*s
, ServiceResult f
, bool allow_restart
) {
1451 if (s
->result
== SERVICE_SUCCESS
)
1454 service_set_state(s
, s
->result
!= SERVICE_SUCCESS
? SERVICE_FAILED
: SERVICE_DEAD
);
1456 if (s
->result
!= SERVICE_SUCCESS
) {
1457 log_unit_warning(UNIT(s
), "Failed with result '%s'.", service_result_to_string(s
->result
));
1458 failure_action(UNIT(s
)->manager
, s
->failure_action
, UNIT(s
)->reboot_arg
);
1461 if (allow_restart
&& service_shall_restart(s
)) {
1463 r
= service_arm_timer(s
, usec_add(now(CLOCK_MONOTONIC
), s
->restart_usec
));
1467 service_set_state(s
, SERVICE_AUTO_RESTART
);
1470 /* The next restart might not be a manual stop, hence reset the flag indicating manual stops */
1471 s
->forbid_restart
= false;
1473 /* We want fresh tmpdirs in case service is started again immediately */
1474 exec_runtime_destroy(s
->exec_runtime
);
1475 s
->exec_runtime
= exec_runtime_unref(s
->exec_runtime
);
1477 /* Also, remove the runtime directory */
1478 exec_context_destroy_runtime_directory(&s
->exec_context
, manager_get_runtime_prefix(UNIT(s
)->manager
));
1480 /* Get rid of the IPC bits of the user */
1481 unit_unref_uid_gid(UNIT(s
), true);
1483 /* Release the user, and destroy it if we are the only remaining owner */
1484 dynamic_creds_destroy(&s
->dynamic_creds
);
1486 /* Try to delete the pid file. At this point it will be
1487 * out-of-date, and some software might be confused by it, so
1488 * let's remove it. */
1490 (void) unlink(s
->pid_file
);
1495 log_unit_warning_errno(UNIT(s
), r
, "Failed to run install restart timer: %m");
1496 service_enter_dead(s
, SERVICE_FAILURE_RESOURCES
, false);
1499 static void service_enter_stop_post(Service
*s
, ServiceResult f
) {
1503 if (s
->result
== SERVICE_SUCCESS
)
1506 service_unwatch_control_pid(s
);
1507 unit_watch_all_pids(UNIT(s
));
1509 s
->control_command
= s
->exec_command
[SERVICE_EXEC_STOP_POST
];
1510 if (s
->control_command
) {
1511 s
->control_command_id
= SERVICE_EXEC_STOP_POST
;
1513 r
= service_spawn(s
,
1515 s
->timeout_stop_usec
,
1516 EXEC_APPLY_PERMISSIONS
|EXEC_APPLY_CHROOT
|EXEC_APPLY_TTY_STDIN
|EXEC_IS_CONTROL
|EXEC_SETENV_RESULT
,
1521 service_set_state(s
, SERVICE_STOP_POST
);
1523 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, SERVICE_SUCCESS
);
1528 log_unit_warning_errno(UNIT(s
), r
, "Failed to run 'stop-post' task: %m");
1529 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
1532 static int state_to_kill_operation(ServiceState state
) {
1535 case SERVICE_STOP_SIGABRT
:
1538 case SERVICE_STOP_SIGTERM
:
1539 case SERVICE_FINAL_SIGTERM
:
1540 return KILL_TERMINATE
;
1542 case SERVICE_STOP_SIGKILL
:
1543 case SERVICE_FINAL_SIGKILL
:
1547 return _KILL_OPERATION_INVALID
;
1551 static void service_enter_signal(Service
*s
, ServiceState state
, ServiceResult f
) {
1556 if (s
->result
== SERVICE_SUCCESS
)
1559 unit_watch_all_pids(UNIT(s
));
1561 r
= unit_kill_context(
1564 state_to_kill_operation(state
),
1573 r
= service_arm_timer(s
, usec_add(now(CLOCK_MONOTONIC
), s
->timeout_stop_usec
));
1577 service_set_state(s
, state
);
1578 } else if (IN_SET(state
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
) && s
->kill_context
.send_sigkill
)
1579 service_enter_signal(s
, SERVICE_STOP_SIGKILL
, SERVICE_SUCCESS
);
1580 else if (IN_SET(state
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
))
1581 service_enter_stop_post(s
, SERVICE_SUCCESS
);
1582 else if (state
== SERVICE_FINAL_SIGTERM
&& s
->kill_context
.send_sigkill
)
1583 service_enter_signal(s
, SERVICE_FINAL_SIGKILL
, SERVICE_SUCCESS
);
1585 service_enter_dead(s
, SERVICE_SUCCESS
, true);
1590 log_unit_warning_errno(UNIT(s
), r
, "Failed to kill processes: %m");
1592 if (IN_SET(state
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
))
1593 service_enter_stop_post(s
, SERVICE_FAILURE_RESOURCES
);
1595 service_enter_dead(s
, SERVICE_FAILURE_RESOURCES
, true);
1598 static void service_enter_stop_by_notify(Service
*s
) {
1601 unit_watch_all_pids(UNIT(s
));
1603 service_arm_timer(s
, usec_add(now(CLOCK_MONOTONIC
), s
->timeout_stop_usec
));
1605 /* The service told us it's stopping, so it's as if we SIGTERM'd it. */
1606 service_set_state(s
, SERVICE_STOP_SIGTERM
);
1609 static void service_enter_stop(Service
*s
, ServiceResult f
) {
1614 if (s
->result
== SERVICE_SUCCESS
)
1617 service_unwatch_control_pid(s
);
1618 unit_watch_all_pids(UNIT(s
));
1620 s
->control_command
= s
->exec_command
[SERVICE_EXEC_STOP
];
1621 if (s
->control_command
) {
1622 s
->control_command_id
= SERVICE_EXEC_STOP
;
1624 r
= service_spawn(s
,
1626 s
->timeout_stop_usec
,
1627 EXEC_APPLY_PERMISSIONS
|EXEC_APPLY_CHROOT
|EXEC_IS_CONTROL
|EXEC_SETENV_RESULT
,
1632 service_set_state(s
, SERVICE_STOP
);
1634 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_SUCCESS
);
1639 log_unit_warning_errno(UNIT(s
), r
, "Failed to run 'stop' task: %m");
1640 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
1643 static bool service_good(Service
*s
) {
1647 if (s
->type
== SERVICE_DBUS
&& !s
->bus_name_good
)
1650 main_pid_ok
= main_pid_good(s
);
1651 if (main_pid_ok
> 0) /* It's alive */
1653 if (main_pid_ok
== 0) /* It's dead */
1656 /* OK, we don't know anything about the main PID, maybe
1657 * because there is none. Let's check the control group
1660 return cgroup_good(s
) != 0;
1663 static void service_enter_running(Service
*s
, ServiceResult f
) {
1666 if (s
->result
== SERVICE_SUCCESS
)
1669 service_unwatch_control_pid(s
);
1671 if (service_good(s
)) {
1673 /* If there are any queued up sd_notify()
1674 * notifications, process them now */
1675 if (s
->notify_state
== NOTIFY_RELOADING
)
1676 service_enter_reload_by_notify(s
);
1677 else if (s
->notify_state
== NOTIFY_STOPPING
)
1678 service_enter_stop_by_notify(s
);
1680 service_set_state(s
, SERVICE_RUNNING
);
1681 service_arm_timer(s
, usec_add(UNIT(s
)->active_enter_timestamp
.monotonic
, s
->runtime_max_usec
));
1684 } else if (s
->remain_after_exit
)
1685 service_set_state(s
, SERVICE_EXITED
);
1687 service_enter_stop(s
, SERVICE_SUCCESS
);
1690 static void service_enter_start_post(Service
*s
) {
1694 service_unwatch_control_pid(s
);
1695 service_reset_watchdog(s
);
1697 s
->control_command
= s
->exec_command
[SERVICE_EXEC_START_POST
];
1698 if (s
->control_command
) {
1699 s
->control_command_id
= SERVICE_EXEC_START_POST
;
1701 r
= service_spawn(s
,
1703 s
->timeout_start_usec
,
1704 EXEC_APPLY_PERMISSIONS
|EXEC_APPLY_CHROOT
|EXEC_IS_CONTROL
,
1709 service_set_state(s
, SERVICE_START_POST
);
1711 service_enter_running(s
, SERVICE_SUCCESS
);
1716 log_unit_warning_errno(UNIT(s
), r
, "Failed to run 'start-post' task: %m");
1717 service_enter_stop(s
, SERVICE_FAILURE_RESOURCES
);
1720 static void service_kill_control_processes(Service
*s
) {
1723 if (!UNIT(s
)->cgroup_path
)
1726 p
= strjoina(UNIT(s
)->cgroup_path
, "/control");
1727 cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER
, p
, SIGKILL
, CGROUP_SIGCONT
|CGROUP_IGNORE_SELF
|CGROUP_REMOVE
, NULL
, NULL
, NULL
);
1730 static void service_enter_start(Service
*s
) {
1738 service_unwatch_control_pid(s
);
1739 service_unwatch_main_pid(s
);
1741 /* We want to ensure that nobody leaks processes from
1742 * START_PRE here, so let's go on a killing spree, People
1743 * should not spawn long running processes from START_PRE. */
1744 service_kill_control_processes(s
);
1746 if (s
->type
== SERVICE_FORKING
) {
1747 s
->control_command_id
= SERVICE_EXEC_START
;
1748 c
= s
->control_command
= s
->exec_command
[SERVICE_EXEC_START
];
1750 s
->main_command
= NULL
;
1752 s
->control_command_id
= _SERVICE_EXEC_COMMAND_INVALID
;
1753 s
->control_command
= NULL
;
1755 c
= s
->main_command
= s
->exec_command
[SERVICE_EXEC_START
];
1759 if (s
->type
!= SERVICE_ONESHOT
) {
1760 /* There's no command line configured for the main command? Hmm, that is strange. This can only
1761 * happen if the configuration changes at runtime. In this case, let's enter a failure
1763 log_unit_error(UNIT(s
), "There's no 'start' task anymore we could start: %m");
1768 service_enter_start_post(s
);
1772 if (IN_SET(s
->type
, SERVICE_SIMPLE
, SERVICE_IDLE
))
1773 /* For simple + idle this is the main process. We don't apply any timeout here, but
1774 * service_enter_running() will later apply the .runtime_max_usec timeout. */
1775 timeout
= USEC_INFINITY
;
1777 timeout
= s
->timeout_start_usec
;
1779 r
= service_spawn(s
,
1782 EXEC_PASS_FDS
|EXEC_APPLY_PERMISSIONS
|EXEC_APPLY_CHROOT
|EXEC_APPLY_TTY_STDIN
|EXEC_SET_WATCHDOG
,
1787 if (IN_SET(s
->type
, SERVICE_SIMPLE
, SERVICE_IDLE
)) {
1788 /* For simple services we immediately start
1789 * the START_POST binaries. */
1791 service_set_main_pid(s
, pid
);
1792 service_enter_start_post(s
);
1794 } else if (s
->type
== SERVICE_FORKING
) {
1796 /* For forking services we wait until the start
1797 * process exited. */
1799 s
->control_pid
= pid
;
1800 service_set_state(s
, SERVICE_START
);
1802 } else if (IN_SET(s
->type
, SERVICE_ONESHOT
, SERVICE_DBUS
, SERVICE_NOTIFY
)) {
1804 /* For oneshot services we wait until the start
1805 * process exited, too, but it is our main process. */
1807 /* For D-Bus services we know the main pid right away,
1808 * but wait for the bus name to appear on the
1809 * bus. Notify services are similar. */
1811 service_set_main_pid(s
, pid
);
1812 service_set_state(s
, SERVICE_START
);
1814 assert_not_reached("Unknown service type");
1819 log_unit_warning_errno(UNIT(s
), r
, "Failed to run 'start' task: %m");
1820 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
1823 static void service_enter_start_pre(Service
*s
) {
1828 service_unwatch_control_pid(s
);
1830 s
->control_command
= s
->exec_command
[SERVICE_EXEC_START_PRE
];
1831 if (s
->control_command
) {
1832 /* Before we start anything, let's clear up what might
1833 * be left from previous runs. */
1834 service_kill_control_processes(s
);
1836 s
->control_command_id
= SERVICE_EXEC_START_PRE
;
1838 r
= service_spawn(s
,
1840 s
->timeout_start_usec
,
1841 EXEC_APPLY_PERMISSIONS
|EXEC_APPLY_CHROOT
|EXEC_IS_CONTROL
|EXEC_APPLY_TTY_STDIN
,
1846 service_set_state(s
, SERVICE_START_PRE
);
1848 service_enter_start(s
);
1853 log_unit_warning_errno(UNIT(s
), r
, "Failed to run 'start-pre' task: %m");
1854 service_enter_dead(s
, SERVICE_FAILURE_RESOURCES
, true);
1857 static void service_enter_restart(Service
*s
) {
1858 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
1863 if (UNIT(s
)->job
&& UNIT(s
)->job
->type
== JOB_STOP
) {
1864 /* Don't restart things if we are going down anyway */
1865 log_unit_info(UNIT(s
), "Stop job pending for unit, delaying automatic restart.");
1867 r
= service_arm_timer(s
, usec_add(now(CLOCK_MONOTONIC
), s
->restart_usec
));
1874 /* Any units that are bound to this service must also be
1875 * restarted. We use JOB_RESTART (instead of the more obvious
1876 * JOB_START) here so that those dependency jobs will be added
1878 r
= manager_add_job(UNIT(s
)->manager
, JOB_RESTART
, UNIT(s
), JOB_FAIL
, &error
, NULL
);
1882 /* Note that we stay in the SERVICE_AUTO_RESTART state here,
1883 * it will be canceled as part of the service_stop() call that
1884 * is executed as part of JOB_RESTART. */
1886 log_unit_debug(UNIT(s
), "Scheduled restart job.");
1890 log_unit_warning(UNIT(s
), "Failed to schedule restart job: %s", bus_error_message(&error
, -r
));
1891 service_enter_dead(s
, SERVICE_FAILURE_RESOURCES
, false);
1894 static void service_enter_reload_by_notify(Service
*s
) {
1897 service_arm_timer(s
, usec_add(now(CLOCK_MONOTONIC
), s
->timeout_start_usec
));
1898 service_set_state(s
, SERVICE_RELOAD
);
1901 static void service_enter_reload(Service
*s
) {
1906 service_unwatch_control_pid(s
);
1907 s
->reload_result
= SERVICE_SUCCESS
;
1909 s
->control_command
= s
->exec_command
[SERVICE_EXEC_RELOAD
];
1910 if (s
->control_command
) {
1911 s
->control_command_id
= SERVICE_EXEC_RELOAD
;
1913 r
= service_spawn(s
,
1915 s
->timeout_start_usec
,
1916 EXEC_APPLY_PERMISSIONS
|EXEC_APPLY_CHROOT
|EXEC_IS_CONTROL
,
1921 service_set_state(s
, SERVICE_RELOAD
);
1923 service_enter_running(s
, SERVICE_SUCCESS
);
1928 log_unit_warning_errno(UNIT(s
), r
, "Failed to run 'reload' task: %m");
1929 s
->reload_result
= SERVICE_FAILURE_RESOURCES
;
1930 service_enter_running(s
, SERVICE_SUCCESS
);
1933 static void service_run_next_control(Service
*s
) {
1938 assert(s
->control_command
);
1939 assert(s
->control_command
->command_next
);
1941 assert(s
->control_command_id
!= SERVICE_EXEC_START
);
1943 s
->control_command
= s
->control_command
->command_next
;
1944 service_unwatch_control_pid(s
);
1946 if (IN_SET(s
->state
, SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
, SERVICE_RUNNING
, SERVICE_RELOAD
))
1947 timeout
= s
->timeout_start_usec
;
1949 timeout
= s
->timeout_stop_usec
;
1951 r
= service_spawn(s
,
1954 EXEC_APPLY_PERMISSIONS
|EXEC_APPLY_CHROOT
|EXEC_IS_CONTROL
|
1955 (IN_SET(s
->control_command_id
, SERVICE_EXEC_START_PRE
, SERVICE_EXEC_STOP_POST
) ? EXEC_APPLY_TTY_STDIN
: 0)|
1956 (IN_SET(s
->control_command_id
, SERVICE_EXEC_STOP
, SERVICE_EXEC_STOP_POST
) ? EXEC_SETENV_RESULT
: 0),
1964 log_unit_warning_errno(UNIT(s
), r
, "Failed to run next control task: %m");
1966 if (s
->state
== SERVICE_START_PRE
)
1967 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
1968 else if (s
->state
== SERVICE_STOP
)
1969 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
1970 else if (s
->state
== SERVICE_STOP_POST
)
1971 service_enter_dead(s
, SERVICE_FAILURE_RESOURCES
, true);
1972 else if (s
->state
== SERVICE_RELOAD
) {
1973 s
->reload_result
= SERVICE_FAILURE_RESOURCES
;
1974 service_enter_running(s
, SERVICE_SUCCESS
);
1976 service_enter_stop(s
, SERVICE_FAILURE_RESOURCES
);
1979 static void service_run_next_main(Service
*s
) {
1984 assert(s
->main_command
);
1985 assert(s
->main_command
->command_next
);
1986 assert(s
->type
== SERVICE_ONESHOT
);
1988 s
->main_command
= s
->main_command
->command_next
;
1989 service_unwatch_main_pid(s
);
1991 r
= service_spawn(s
,
1993 s
->timeout_start_usec
,
1994 EXEC_PASS_FDS
|EXEC_APPLY_PERMISSIONS
|EXEC_APPLY_CHROOT
|EXEC_APPLY_TTY_STDIN
|EXEC_SET_WATCHDOG
,
1999 service_set_main_pid(s
, pid
);
2004 log_unit_warning_errno(UNIT(s
), r
, "Failed to run next main task: %m");
2005 service_enter_stop(s
, SERVICE_FAILURE_RESOURCES
);
2008 static int service_start(Unit
*u
) {
2009 Service
*s
= SERVICE(u
);
2014 /* We cannot fulfill this request right now, try again later
2016 if (IN_SET(s
->state
,
2017 SERVICE_STOP
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
2018 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
))
2021 /* Already on it! */
2022 if (IN_SET(s
->state
, SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
))
2025 /* A service that will be restarted must be stopped first to
2026 * trigger BindsTo and/or OnFailure dependencies. If a user
2027 * does not want to wait for the holdoff time to elapse, the
2028 * service should be manually restarted, not started. We
2029 * simply return EAGAIN here, so that any start jobs stay
2030 * queued, and assume that the auto restart timer will
2031 * eventually trigger the restart. */
2032 if (s
->state
== SERVICE_AUTO_RESTART
)
2035 assert(IN_SET(s
->state
, SERVICE_DEAD
, SERVICE_FAILED
));
2037 /* Make sure we don't enter a busy loop of some kind. */
2038 r
= unit_start_limit_test(u
);
2040 service_enter_dead(s
, SERVICE_FAILURE_START_LIMIT_HIT
, false);
2044 r
= unit_acquire_invocation_id(u
);
2048 s
->result
= SERVICE_SUCCESS
;
2049 s
->reload_result
= SERVICE_SUCCESS
;
2050 s
->main_pid_known
= false;
2051 s
->main_pid_alien
= false;
2052 s
->forbid_restart
= false;
2053 s
->reset_cpu_usage
= true;
2055 s
->status_text
= mfree(s
->status_text
);
2056 s
->status_errno
= 0;
2058 s
->notify_state
= NOTIFY_UNKNOWN
;
2060 s
->watchdog_override_enable
= false;
2061 s
->watchdog_override_usec
= 0;
2063 service_enter_start_pre(s
);
2067 static int service_stop(Unit
*u
) {
2068 Service
*s
= SERVICE(u
);
2072 /* Don't create restart jobs from manual stops. */
2073 s
->forbid_restart
= true;
2076 if (IN_SET(s
->state
,
2077 SERVICE_STOP
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
2078 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
))
2081 /* A restart will be scheduled or is in progress. */
2082 if (s
->state
== SERVICE_AUTO_RESTART
) {
2083 service_set_state(s
, SERVICE_DEAD
);
2087 /* If there's already something running we go directly into
2089 if (IN_SET(s
->state
, SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
, SERVICE_RELOAD
)) {
2090 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_SUCCESS
);
2094 assert(IN_SET(s
->state
, SERVICE_RUNNING
, SERVICE_EXITED
));
2096 service_enter_stop(s
, SERVICE_SUCCESS
);
2100 static int service_reload(Unit
*u
) {
2101 Service
*s
= SERVICE(u
);
2105 assert(s
->state
== SERVICE_RUNNING
|| s
->state
== SERVICE_EXITED
);
2107 service_enter_reload(s
);
2111 _pure_
static bool service_can_reload(Unit
*u
) {
2112 Service
*s
= SERVICE(u
);
2116 return !!s
->exec_command
[SERVICE_EXEC_RELOAD
];
2119 static int service_serialize(Unit
*u
, FILE *f
, FDSet
*fds
) {
2120 Service
*s
= SERVICE(u
);
2128 unit_serialize_item(u
, f
, "state", service_state_to_string(s
->state
));
2129 unit_serialize_item(u
, f
, "result", service_result_to_string(s
->result
));
2130 unit_serialize_item(u
, f
, "reload-result", service_result_to_string(s
->reload_result
));
2132 if (s
->control_pid
> 0)
2133 unit_serialize_item_format(u
, f
, "control-pid", PID_FMT
, s
->control_pid
);
2135 if (s
->main_pid_known
&& s
->main_pid
> 0)
2136 unit_serialize_item_format(u
, f
, "main-pid", PID_FMT
, s
->main_pid
);
2138 unit_serialize_item(u
, f
, "main-pid-known", yes_no(s
->main_pid_known
));
2139 unit_serialize_item(u
, f
, "bus-name-good", yes_no(s
->bus_name_good
));
2140 unit_serialize_item(u
, f
, "bus-name-owner", s
->bus_name_owner
);
2142 r
= unit_serialize_item_escaped(u
, f
, "status-text", s
->status_text
);
2146 /* FIXME: There's a minor uncleanliness here: if there are
2147 * multiple commands attached here, we will start from the
2148 * first one again */
2149 if (s
->control_command_id
>= 0)
2150 unit_serialize_item(u
, f
, "control-command", service_exec_command_to_string(s
->control_command_id
));
2152 r
= unit_serialize_item_fd(u
, f
, fds
, "stdin-fd", s
->stdin_fd
);
2155 r
= unit_serialize_item_fd(u
, f
, fds
, "stdout-fd", s
->stdout_fd
);
2158 r
= unit_serialize_item_fd(u
, f
, fds
, "stderr-fd", s
->stderr_fd
);
2162 if (UNIT_ISSET(s
->accept_socket
)) {
2163 r
= unit_serialize_item(u
, f
, "accept-socket", UNIT_DEREF(s
->accept_socket
)->id
);
2168 r
= unit_serialize_item_fd(u
, f
, fds
, "socket-fd", s
->socket_fd
);
2172 LIST_FOREACH(fd_store
, fs
, s
->fd_store
) {
2173 _cleanup_free_
char *c
= NULL
;
2176 copy
= fdset_put_dup(fds
, fs
->fd
);
2180 c
= cescape(fs
->fdname
);
2182 unit_serialize_item_format(u
, f
, "fd-store-fd", "%i %s", copy
, strempty(c
));
2185 if (s
->main_exec_status
.pid
> 0) {
2186 unit_serialize_item_format(u
, f
, "main-exec-status-pid", PID_FMT
, s
->main_exec_status
.pid
);
2187 dual_timestamp_serialize(f
, "main-exec-status-start", &s
->main_exec_status
.start_timestamp
);
2188 dual_timestamp_serialize(f
, "main-exec-status-exit", &s
->main_exec_status
.exit_timestamp
);
2190 if (dual_timestamp_is_set(&s
->main_exec_status
.exit_timestamp
)) {
2191 unit_serialize_item_format(u
, f
, "main-exec-status-code", "%i", s
->main_exec_status
.code
);
2192 unit_serialize_item_format(u
, f
, "main-exec-status-status", "%i", s
->main_exec_status
.status
);
2196 dual_timestamp_serialize(f
, "watchdog-timestamp", &s
->watchdog_timestamp
);
2198 unit_serialize_item(u
, f
, "forbid-restart", yes_no(s
->forbid_restart
));
2200 if (s
->watchdog_override_enable
)
2201 unit_serialize_item_format(u
, f
, "watchdog-override-usec", USEC_FMT
, s
->watchdog_override_usec
);
2206 static int service_deserialize_item(Unit
*u
, const char *key
, const char *value
, FDSet
*fds
) {
2207 Service
*s
= SERVICE(u
);
2215 if (streq(key
, "state")) {
2218 state
= service_state_from_string(value
);
2220 log_unit_debug(u
, "Failed to parse state value: %s", value
);
2222 s
->deserialized_state
= state
;
2223 } else if (streq(key
, "result")) {
2226 f
= service_result_from_string(value
);
2228 log_unit_debug(u
, "Failed to parse result value: %s", value
);
2229 else if (f
!= SERVICE_SUCCESS
)
2232 } else if (streq(key
, "reload-result")) {
2235 f
= service_result_from_string(value
);
2237 log_unit_debug(u
, "Failed to parse reload result value: %s", value
);
2238 else if (f
!= SERVICE_SUCCESS
)
2239 s
->reload_result
= f
;
2241 } else if (streq(key
, "control-pid")) {
2244 if (parse_pid(value
, &pid
) < 0)
2245 log_unit_debug(u
, "Failed to parse control-pid value: %s", value
);
2247 s
->control_pid
= pid
;
2248 } else if (streq(key
, "main-pid")) {
2251 if (parse_pid(value
, &pid
) < 0)
2252 log_unit_debug(u
, "Failed to parse main-pid value: %s", value
);
2254 service_set_main_pid(s
, pid
);
2255 unit_watch_pid(UNIT(s
), pid
);
2257 } else if (streq(key
, "main-pid-known")) {
2260 b
= parse_boolean(value
);
2262 log_unit_debug(u
, "Failed to parse main-pid-known value: %s", value
);
2264 s
->main_pid_known
= b
;
2265 } else if (streq(key
, "bus-name-good")) {
2268 b
= parse_boolean(value
);
2270 log_unit_debug(u
, "Failed to parse bus-name-good value: %s", value
);
2272 s
->bus_name_good
= b
;
2273 } else if (streq(key
, "bus-name-owner")) {
2274 r
= free_and_strdup(&s
->bus_name_owner
, value
);
2276 log_unit_error_errno(u
, r
, "Unable to deserialize current bus owner %s: %m", value
);
2277 } else if (streq(key
, "status-text")) {
2280 r
= cunescape(value
, 0, &t
);
2282 log_unit_debug_errno(u
, r
, "Failed to unescape status text: %s", value
);
2284 free(s
->status_text
);
2288 } else if (streq(key
, "control-command")) {
2289 ServiceExecCommand id
;
2291 id
= service_exec_command_from_string(value
);
2293 log_unit_debug(u
, "Failed to parse exec-command value: %s", value
);
2295 s
->control_command_id
= id
;
2296 s
->control_command
= s
->exec_command
[id
];
2298 } else if (streq(key
, "accept-socket")) {
2301 r
= manager_load_unit(u
->manager
, value
, NULL
, NULL
, &socket
);
2303 log_unit_debug_errno(u
, r
, "Failed to load accept-socket unit: %s", value
);
2305 unit_ref_set(&s
->accept_socket
, socket
);
2306 SOCKET(socket
)->n_connections
++;
2309 } else if (streq(key
, "socket-fd")) {
2312 if (safe_atoi(value
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2313 log_unit_debug(u
, "Failed to parse socket-fd value: %s", value
);
2315 asynchronous_close(s
->socket_fd
);
2316 s
->socket_fd
= fdset_remove(fds
, fd
);
2318 } else if (streq(key
, "fd-store-fd")) {
2323 pf
= strcspn(value
, WHITESPACE
);
2324 fdv
= strndupa(value
, pf
);
2326 if (safe_atoi(fdv
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2327 log_unit_debug(u
, "Failed to parse fd-store-fd value: %s", value
);
2329 _cleanup_free_
char *t
= NULL
;
2333 fdn
+= strspn(fdn
, WHITESPACE
);
2334 (void) cunescape(fdn
, 0, &t
);
2336 r
= service_add_fd_store(s
, fd
, t
);
2338 log_unit_error_errno(u
, r
, "Failed to add fd to store: %m");
2340 fdset_remove(fds
, fd
);
2343 } else if (streq(key
, "main-exec-status-pid")) {
2346 if (parse_pid(value
, &pid
) < 0)
2347 log_unit_debug(u
, "Failed to parse main-exec-status-pid value: %s", value
);
2349 s
->main_exec_status
.pid
= pid
;
2350 } else if (streq(key
, "main-exec-status-code")) {
2353 if (safe_atoi(value
, &i
) < 0)
2354 log_unit_debug(u
, "Failed to parse main-exec-status-code value: %s", value
);
2356 s
->main_exec_status
.code
= i
;
2357 } else if (streq(key
, "main-exec-status-status")) {
2360 if (safe_atoi(value
, &i
) < 0)
2361 log_unit_debug(u
, "Failed to parse main-exec-status-status value: %s", value
);
2363 s
->main_exec_status
.status
= i
;
2364 } else if (streq(key
, "main-exec-status-start"))
2365 dual_timestamp_deserialize(value
, &s
->main_exec_status
.start_timestamp
);
2366 else if (streq(key
, "main-exec-status-exit"))
2367 dual_timestamp_deserialize(value
, &s
->main_exec_status
.exit_timestamp
);
2368 else if (streq(key
, "watchdog-timestamp"))
2369 dual_timestamp_deserialize(value
, &s
->watchdog_timestamp
);
2370 else if (streq(key
, "forbid-restart")) {
2373 b
= parse_boolean(value
);
2375 log_unit_debug(u
, "Failed to parse forbid-restart value: %s", value
);
2377 s
->forbid_restart
= b
;
2378 } else if (streq(key
, "stdin-fd")) {
2381 if (safe_atoi(value
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2382 log_unit_debug(u
, "Failed to parse stdin-fd value: %s", value
);
2384 asynchronous_close(s
->stdin_fd
);
2385 s
->stdin_fd
= fdset_remove(fds
, fd
);
2386 s
->exec_context
.stdio_as_fds
= true;
2388 } else if (streq(key
, "stdout-fd")) {
2391 if (safe_atoi(value
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2392 log_unit_debug(u
, "Failed to parse stdout-fd value: %s", value
);
2394 asynchronous_close(s
->stdout_fd
);
2395 s
->stdout_fd
= fdset_remove(fds
, fd
);
2396 s
->exec_context
.stdio_as_fds
= true;
2398 } else if (streq(key
, "stderr-fd")) {
2401 if (safe_atoi(value
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2402 log_unit_debug(u
, "Failed to parse stderr-fd value: %s", value
);
2404 asynchronous_close(s
->stderr_fd
);
2405 s
->stderr_fd
= fdset_remove(fds
, fd
);
2406 s
->exec_context
.stdio_as_fds
= true;
2408 } else if (streq(key
, "watchdog-override-usec")) {
2409 usec_t watchdog_override_usec
;
2410 if (timestamp_deserialize(value
, &watchdog_override_usec
) < 0)
2411 log_unit_debug(u
, "Failed to parse watchdog_override_usec value: %s", value
);
2413 s
->watchdog_override_enable
= true;
2414 s
->watchdog_override_usec
= watchdog_override_usec
;
2417 log_unit_debug(u
, "Unknown serialization key: %s", key
);
2422 _pure_
static UnitActiveState
service_active_state(Unit
*u
) {
2423 const UnitActiveState
*table
;
2427 table
= SERVICE(u
)->type
== SERVICE_IDLE
? state_translation_table_idle
: state_translation_table
;
2429 return table
[SERVICE(u
)->state
];
2432 static const char *service_sub_state_to_string(Unit
*u
) {
2435 return service_state_to_string(SERVICE(u
)->state
);
2438 static bool service_check_gc(Unit
*u
) {
2439 Service
*s
= SERVICE(u
);
2443 /* Never clean up services that still have a process around,
2444 * even if the service is formally dead. */
2445 if (cgroup_good(s
) > 0 ||
2446 main_pid_good(s
) > 0 ||
2447 control_pid_good(s
) > 0)
2453 static int service_retry_pid_file(Service
*s
) {
2456 assert(s
->pid_file
);
2457 assert(s
->state
== SERVICE_START
|| s
->state
== SERVICE_START_POST
);
2459 r
= service_load_pid_file(s
, false);
2463 service_unwatch_pid_file(s
);
2465 service_enter_running(s
, SERVICE_SUCCESS
);
2469 static int service_watch_pid_file(Service
*s
) {
2472 log_unit_debug(UNIT(s
), "Setting watch for PID file %s", s
->pid_file_pathspec
->path
);
2474 r
= path_spec_watch(s
->pid_file_pathspec
, service_dispatch_io
);
2478 /* the pidfile might have appeared just before we set the watch */
2479 log_unit_debug(UNIT(s
), "Trying to read PID file %s in case it changed", s
->pid_file_pathspec
->path
);
2480 service_retry_pid_file(s
);
2484 log_unit_error_errno(UNIT(s
), r
, "Failed to set a watch for PID file %s: %m", s
->pid_file_pathspec
->path
);
2485 service_unwatch_pid_file(s
);
2489 static int service_demand_pid_file(Service
*s
) {
2492 assert(s
->pid_file
);
2493 assert(!s
->pid_file_pathspec
);
2495 ps
= new0(PathSpec
, 1);
2500 ps
->path
= strdup(s
->pid_file
);
2506 path_kill_slashes(ps
->path
);
2508 /* PATH_CHANGED would not be enough. There are daemons (sendmail) that
2509 * keep their PID file open all the time. */
2510 ps
->type
= PATH_MODIFIED
;
2511 ps
->inotify_fd
= -1;
2513 s
->pid_file_pathspec
= ps
;
2515 return service_watch_pid_file(s
);
2518 static int service_dispatch_io(sd_event_source
*source
, int fd
, uint32_t events
, void *userdata
) {
2519 PathSpec
*p
= userdata
;
2524 s
= SERVICE(p
->unit
);
2528 assert(s
->state
== SERVICE_START
|| s
->state
== SERVICE_START_POST
);
2529 assert(s
->pid_file_pathspec
);
2530 assert(path_spec_owns_inotify_fd(s
->pid_file_pathspec
, fd
));
2532 log_unit_debug(UNIT(s
), "inotify event");
2534 if (path_spec_fd_event(p
, events
) < 0)
2537 if (service_retry_pid_file(s
) == 0)
2540 if (service_watch_pid_file(s
) < 0)
2546 service_unwatch_pid_file(s
);
2547 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
2551 static void service_notify_cgroup_empty_event(Unit
*u
) {
2552 Service
*s
= SERVICE(u
);
2556 log_unit_debug(u
, "cgroup is empty");
2560 /* Waiting for SIGCHLD is usually more interesting,
2561 * because it includes return codes/signals. Which is
2562 * why we ignore the cgroup events for most cases,
2563 * except when we don't know pid which to expect the
2567 case SERVICE_START_POST
:
2568 /* If we were hoping for the daemon to write its PID file,
2569 * we can give up now. */
2570 if (s
->pid_file_pathspec
) {
2571 log_unit_warning(u
, "Daemon never wrote its PID file. Failing.");
2573 service_unwatch_pid_file(s
);
2574 if (s
->state
== SERVICE_START
)
2575 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
2577 service_enter_stop(s
, SERVICE_FAILURE_RESOURCES
);
2581 case SERVICE_RUNNING
:
2582 /* service_enter_running() will figure out what to do */
2583 service_enter_running(s
, SERVICE_SUCCESS
);
2586 case SERVICE_STOP_SIGABRT
:
2587 case SERVICE_STOP_SIGTERM
:
2588 case SERVICE_STOP_SIGKILL
:
2590 if (main_pid_good(s
) <= 0 && !control_pid_good(s
))
2591 service_enter_stop_post(s
, SERVICE_SUCCESS
);
2595 case SERVICE_STOP_POST
:
2596 case SERVICE_FINAL_SIGTERM
:
2597 case SERVICE_FINAL_SIGKILL
:
2598 if (main_pid_good(s
) <= 0 && !control_pid_good(s
))
2599 service_enter_dead(s
, SERVICE_SUCCESS
, true);
2608 static void service_sigchld_event(Unit
*u
, pid_t pid
, int code
, int status
) {
2609 Service
*s
= SERVICE(u
);
2615 if (is_clean_exit(code
, status
, s
->type
== SERVICE_ONESHOT
? EXIT_CLEAN_COMMAND
: EXIT_CLEAN_DAEMON
, &s
->success_status
))
2616 f
= SERVICE_SUCCESS
;
2617 else if (code
== CLD_EXITED
)
2618 f
= SERVICE_FAILURE_EXIT_CODE
;
2619 else if (code
== CLD_KILLED
)
2620 f
= SERVICE_FAILURE_SIGNAL
;
2621 else if (code
== CLD_DUMPED
)
2622 f
= SERVICE_FAILURE_CORE_DUMP
;
2624 assert_not_reached("Unknown code");
2626 if (s
->main_pid
== pid
) {
2627 /* Forking services may occasionally move to a new PID.
2628 * As long as they update the PID file before exiting the old
2629 * PID, they're fine. */
2630 if (service_load_pid_file(s
, false) == 0)
2634 exec_status_exit(&s
->main_exec_status
, &s
->exec_context
, pid
, code
, status
);
2636 if (s
->main_command
) {
2637 /* If this is not a forking service than the
2638 * main process got started and hence we copy
2639 * the exit status so that it is recorded both
2640 * as main and as control process exit
2643 s
->main_command
->exec_status
= s
->main_exec_status
;
2645 if (s
->main_command
->ignore
)
2646 f
= SERVICE_SUCCESS
;
2647 } else if (s
->exec_command
[SERVICE_EXEC_START
]) {
2649 /* If this is a forked process, then we should
2650 * ignore the return value if this was
2651 * configured for the starter process */
2653 if (s
->exec_command
[SERVICE_EXEC_START
]->ignore
)
2654 f
= SERVICE_SUCCESS
;
2657 /* When this is a successful exit, let's log about the exit code on DEBUG level. If this is a failure
2658 * and the process exited on its own via exit(), then let's make this a NOTICE, under the assumption
2659 * that the service already logged the reason at a higher log level on its own. However, if the service
2660 * died due to a signal, then it most likely didn't say anything about any reason, hence let's raise
2661 * our log level to WARNING then. */
2663 log_struct(f
== SERVICE_SUCCESS
? LOG_DEBUG
:
2664 (code
== CLD_EXITED
? LOG_NOTICE
: LOG_WARNING
),
2666 LOG_UNIT_MESSAGE(u
, "Main process exited, code=%s, status=%i/%s",
2667 sigchld_code_to_string(code
), status
,
2668 strna(code
== CLD_EXITED
2669 ? exit_status_to_string(status
, EXIT_STATUS_FULL
)
2670 : signal_to_string(status
))),
2671 "EXIT_CODE=%s", sigchld_code_to_string(code
),
2672 "EXIT_STATUS=%i", status
,
2675 if (s
->result
== SERVICE_SUCCESS
)
2678 if (s
->main_command
&&
2679 s
->main_command
->command_next
&&
2680 f
== SERVICE_SUCCESS
) {
2682 /* There is another command to *
2683 * execute, so let's do that. */
2685 log_unit_debug(u
, "Running next main command for state %s.", service_state_to_string(s
->state
));
2686 service_run_next_main(s
);
2690 /* The service exited, so the service is officially
2692 s
->main_command
= NULL
;
2696 case SERVICE_START_POST
:
2697 case SERVICE_RELOAD
:
2699 /* Need to wait until the operation is
2704 if (s
->type
== SERVICE_ONESHOT
) {
2705 /* This was our main goal, so let's go on */
2706 if (f
== SERVICE_SUCCESS
)
2707 service_enter_start_post(s
);
2709 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, f
);
2715 case SERVICE_RUNNING
:
2716 service_enter_running(s
, f
);
2719 case SERVICE_STOP_SIGABRT
:
2720 case SERVICE_STOP_SIGTERM
:
2721 case SERVICE_STOP_SIGKILL
:
2723 if (!control_pid_good(s
))
2724 service_enter_stop_post(s
, f
);
2726 /* If there is still a control process, wait for that first */
2729 case SERVICE_STOP_POST
:
2730 case SERVICE_FINAL_SIGTERM
:
2731 case SERVICE_FINAL_SIGKILL
:
2733 if (!control_pid_good(s
))
2734 service_enter_dead(s
, f
, true);
2738 assert_not_reached("Uh, main process died at wrong time.");
2742 } else if (s
->control_pid
== pid
) {
2745 if (s
->control_command
) {
2746 exec_status_exit(&s
->control_command
->exec_status
, &s
->exec_context
, pid
, code
, status
);
2748 if (s
->control_command
->ignore
)
2749 f
= SERVICE_SUCCESS
;
2752 log_unit_full(u
, f
== SERVICE_SUCCESS
? LOG_DEBUG
: LOG_NOTICE
, 0,
2753 "Control process exited, code=%s status=%i",
2754 sigchld_code_to_string(code
), status
);
2756 if (s
->result
== SERVICE_SUCCESS
)
2759 /* Immediately get rid of the cgroup, so that the
2760 * kernel doesn't delay the cgroup empty messages for
2761 * the service cgroup any longer than necessary */
2762 service_kill_control_processes(s
);
2764 if (s
->control_command
&&
2765 s
->control_command
->command_next
&&
2766 f
== SERVICE_SUCCESS
) {
2768 /* There is another command to *
2769 * execute, so let's do that. */
2771 log_unit_debug(u
, "Running next control command for state %s.", service_state_to_string(s
->state
));
2772 service_run_next_control(s
);
2775 /* No further commands for this step, so let's
2776 * figure out what to do next */
2778 s
->control_command
= NULL
;
2779 s
->control_command_id
= _SERVICE_EXEC_COMMAND_INVALID
;
2781 log_unit_debug(u
, "Got final SIGCHLD for state %s.", service_state_to_string(s
->state
));
2785 case SERVICE_START_PRE
:
2786 if (f
== SERVICE_SUCCESS
)
2787 service_enter_start(s
);
2789 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, f
);
2793 if (s
->type
!= SERVICE_FORKING
)
2794 /* Maybe spurious event due to a reload that changed the type? */
2797 if (f
!= SERVICE_SUCCESS
) {
2798 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, f
);
2803 bool has_start_post
;
2806 /* Let's try to load the pid file here if we can.
2807 * The PID file might actually be created by a START_POST
2808 * script. In that case don't worry if the loading fails. */
2810 has_start_post
= !!s
->exec_command
[SERVICE_EXEC_START_POST
];
2811 r
= service_load_pid_file(s
, !has_start_post
);
2812 if (!has_start_post
&& r
< 0) {
2813 r
= service_demand_pid_file(s
);
2814 if (r
< 0 || !cgroup_good(s
))
2815 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
2819 service_search_main_pid(s
);
2821 service_enter_start_post(s
);
2824 case SERVICE_START_POST
:
2825 if (f
!= SERVICE_SUCCESS
) {
2826 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, f
);
2833 r
= service_load_pid_file(s
, true);
2835 r
= service_demand_pid_file(s
);
2836 if (r
< 0 || !cgroup_good(s
))
2837 service_enter_stop(s
, SERVICE_FAILURE_RESOURCES
);
2841 service_search_main_pid(s
);
2843 service_enter_running(s
, SERVICE_SUCCESS
);
2846 case SERVICE_RELOAD
:
2847 if (f
== SERVICE_SUCCESS
)
2848 if (service_load_pid_file(s
, true) < 0)
2849 service_search_main_pid(s
);
2851 s
->reload_result
= f
;
2852 service_enter_running(s
, SERVICE_SUCCESS
);
2856 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, f
);
2859 case SERVICE_STOP_SIGABRT
:
2860 case SERVICE_STOP_SIGTERM
:
2861 case SERVICE_STOP_SIGKILL
:
2862 if (main_pid_good(s
) <= 0)
2863 service_enter_stop_post(s
, f
);
2865 /* If there is still a service
2866 * process around, wait until
2867 * that one quit, too */
2870 case SERVICE_STOP_POST
:
2871 case SERVICE_FINAL_SIGTERM
:
2872 case SERVICE_FINAL_SIGKILL
:
2873 if (main_pid_good(s
) <= 0)
2874 service_enter_dead(s
, f
, true);
2878 assert_not_reached("Uh, control process died at wrong time.");
2883 /* Notify clients about changed exit status */
2884 unit_add_to_dbus_queue(u
);
2886 /* We got one SIGCHLD for the service, let's watch all
2887 * processes that are now running of the service, and watch
2888 * that. Among the PIDs we then watch will be children
2889 * reassigned to us, which hopefully allows us to identify
2890 * when all children are gone */
2891 unit_tidy_watch_pids(u
, s
->main_pid
, s
->control_pid
);
2892 unit_watch_all_pids(u
);
2894 /* If the PID set is empty now, then let's finish this off
2895 (On unified we use proper notifications) */
2896 if (cg_unified(SYSTEMD_CGROUP_CONTROLLER
) <= 0 && set_isempty(u
->pids
))
2897 service_notify_cgroup_empty_event(u
);
2900 static int service_dispatch_timer(sd_event_source
*source
, usec_t usec
, void *userdata
) {
2901 Service
*s
= SERVICE(userdata
);
2904 assert(source
== s
->timer_event_source
);
2908 case SERVICE_START_PRE
:
2910 log_unit_warning(UNIT(s
), "%s operation timed out. Terminating.", s
->state
== SERVICE_START
? "Start" : "Start-pre");
2911 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, SERVICE_FAILURE_TIMEOUT
);
2914 case SERVICE_START_POST
:
2915 log_unit_warning(UNIT(s
), "Start-post operation timed out. Stopping.");
2916 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_TIMEOUT
);
2919 case SERVICE_RUNNING
:
2920 log_unit_warning(UNIT(s
), "Service reached runtime time limit. Stopping.");
2921 service_enter_stop(s
, SERVICE_FAILURE_TIMEOUT
);
2924 case SERVICE_RELOAD
:
2925 log_unit_warning(UNIT(s
), "Reload operation timed out. Killing reload process.");
2926 service_kill_control_processes(s
);
2927 s
->reload_result
= SERVICE_FAILURE_TIMEOUT
;
2928 service_enter_running(s
, SERVICE_SUCCESS
);
2932 log_unit_warning(UNIT(s
), "Stopping timed out. Terminating.");
2933 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_TIMEOUT
);
2936 case SERVICE_STOP_SIGABRT
:
2937 log_unit_warning(UNIT(s
), "State 'stop-sigabrt' timed out. Terminating.");
2938 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_TIMEOUT
);
2941 case SERVICE_STOP_SIGTERM
:
2942 if (s
->kill_context
.send_sigkill
) {
2943 log_unit_warning(UNIT(s
), "State 'stop-sigterm' timed out. Killing.");
2944 service_enter_signal(s
, SERVICE_STOP_SIGKILL
, SERVICE_FAILURE_TIMEOUT
);
2946 log_unit_warning(UNIT(s
), "State 'stop-sigterm' timed out. Skipping SIGKILL.");
2947 service_enter_stop_post(s
, SERVICE_FAILURE_TIMEOUT
);
2952 case SERVICE_STOP_SIGKILL
:
2953 /* Uh, we sent a SIGKILL and it is still not gone?
2954 * Must be something we cannot kill, so let's just be
2955 * weirded out and continue */
2957 log_unit_warning(UNIT(s
), "Processes still around after SIGKILL. Ignoring.");
2958 service_enter_stop_post(s
, SERVICE_FAILURE_TIMEOUT
);
2961 case SERVICE_STOP_POST
:
2962 log_unit_warning(UNIT(s
), "State 'stop-post' timed out. Terminating.");
2963 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, SERVICE_FAILURE_TIMEOUT
);
2966 case SERVICE_FINAL_SIGTERM
:
2967 if (s
->kill_context
.send_sigkill
) {
2968 log_unit_warning(UNIT(s
), "State 'stop-final-sigterm' timed out. Killing.");
2969 service_enter_signal(s
, SERVICE_FINAL_SIGKILL
, SERVICE_FAILURE_TIMEOUT
);
2971 log_unit_warning(UNIT(s
), "State 'stop-final-sigterm' timed out. Skipping SIGKILL. Entering failed mode.");
2972 service_enter_dead(s
, SERVICE_FAILURE_TIMEOUT
, false);
2977 case SERVICE_FINAL_SIGKILL
:
2978 log_unit_warning(UNIT(s
), "Processes still around after final SIGKILL. Entering failed mode.");
2979 service_enter_dead(s
, SERVICE_FAILURE_TIMEOUT
, true);
2982 case SERVICE_AUTO_RESTART
:
2983 log_unit_info(UNIT(s
),
2984 s
->restart_usec
> 0 ?
2985 "Service hold-off time over, scheduling restart." :
2986 "Service has no hold-off time, scheduling restart.");
2987 service_enter_restart(s
);
2991 assert_not_reached("Timeout at wrong time.");
2997 static int service_dispatch_watchdog(sd_event_source
*source
, usec_t usec
, void *userdata
) {
2998 Service
*s
= SERVICE(userdata
);
2999 char t
[FORMAT_TIMESPAN_MAX
];
3000 usec_t watchdog_usec
;
3003 assert(source
== s
->watchdog_event_source
);
3005 watchdog_usec
= service_get_watchdog_usec(s
);
3007 log_unit_error(UNIT(s
), "Watchdog timeout (limit %s)!",
3008 format_timespan(t
, sizeof(t
), watchdog_usec
, 1));
3010 service_enter_signal(s
, SERVICE_STOP_SIGABRT
, SERVICE_FAILURE_WATCHDOG
);
3015 static void service_notify_message(Unit
*u
, pid_t pid
, char **tags
, FDSet
*fds
) {
3016 Service
*s
= SERVICE(u
);
3017 _cleanup_free_
char *cc
= NULL
;
3018 bool notify_dbus
= false;
3023 cc
= strv_join(tags
, ", ");
3025 if (s
->notify_access
== NOTIFY_NONE
) {
3026 log_unit_warning(u
, "Got notification message from PID "PID_FMT
", but reception is disabled.", pid
);
3028 } else if (s
->notify_access
== NOTIFY_MAIN
&& pid
!= s
->main_pid
) {
3029 if (s
->main_pid
!= 0)
3030 log_unit_warning(u
, "Got notification message from PID "PID_FMT
", but reception only permitted for main PID "PID_FMT
, pid
, s
->main_pid
);
3032 log_unit_debug(u
, "Got notification message from PID "PID_FMT
", but reception only permitted for main PID which is currently not known", pid
);
3035 log_unit_debug(u
, "Got notification message from PID "PID_FMT
" (%s)", pid
, isempty(cc
) ? "n/a" : cc
);
3037 /* Interpret MAINPID= */
3038 e
= strv_find_startswith(tags
, "MAINPID=");
3039 if (e
&& IN_SET(s
->state
, SERVICE_START
, SERVICE_START_POST
, SERVICE_RUNNING
, SERVICE_RELOAD
)) {
3040 if (parse_pid(e
, &pid
) < 0)
3041 log_unit_warning(u
, "Failed to parse MAINPID= field in notification message: %s", e
);
3043 service_set_main_pid(s
, pid
);
3044 unit_watch_pid(UNIT(s
), pid
);
3049 /* Interpret RELOADING= */
3050 if (strv_find(tags
, "RELOADING=1")) {
3052 s
->notify_state
= NOTIFY_RELOADING
;
3054 if (s
->state
== SERVICE_RUNNING
)
3055 service_enter_reload_by_notify(s
);
3060 /* Interpret READY= */
3061 if (strv_find(tags
, "READY=1")) {
3063 s
->notify_state
= NOTIFY_READY
;
3065 /* Type=notify services inform us about completed
3066 * initialization with READY=1 */
3067 if (s
->type
== SERVICE_NOTIFY
&& s
->state
== SERVICE_START
)
3068 service_enter_start_post(s
);
3070 /* Sending READY=1 while we are reloading informs us
3071 * that the reloading is complete */
3072 if (s
->state
== SERVICE_RELOAD
&& s
->control_pid
== 0)
3073 service_enter_running(s
, SERVICE_SUCCESS
);
3078 /* Interpret STOPPING= */
3079 if (strv_find(tags
, "STOPPING=1")) {
3081 s
->notify_state
= NOTIFY_STOPPING
;
3083 if (s
->state
== SERVICE_RUNNING
)
3084 service_enter_stop_by_notify(s
);
3089 /* Interpret STATUS= */
3090 e
= strv_find_startswith(tags
, "STATUS=");
3092 _cleanup_free_
char *t
= NULL
;
3095 if (!utf8_is_valid(e
))
3096 log_unit_warning(u
, "Status message in notification message is not UTF-8 clean.");
3104 if (!streq_ptr(s
->status_text
, t
)) {
3106 free_and_replace(s
->status_text
, t
);
3112 /* Interpret ERRNO= */
3113 e
= strv_find_startswith(tags
, "ERRNO=");
3117 if (safe_atoi(e
, &status_errno
) < 0 || status_errno
< 0)
3118 log_unit_warning(u
, "Failed to parse ERRNO= field in notification message: %s", e
);
3120 if (s
->status_errno
!= status_errno
) {
3121 s
->status_errno
= status_errno
;
3127 /* Interpret WATCHDOG= */
3128 if (strv_find(tags
, "WATCHDOG=1"))
3129 service_reset_watchdog(s
);
3131 if (strv_find(tags
, "FDSTORE=1")) {
3134 name
= strv_find_startswith(tags
, "FDNAME=");
3135 if (name
&& !fdname_is_valid(name
)) {
3136 log_unit_warning(u
, "Passed FDNAME= name is invalid, ignoring.");
3140 service_add_fd_store_set(s
, fds
, name
);
3143 e
= strv_find_startswith(tags
, "WATCHDOG_USEC=");
3145 usec_t watchdog_override_usec
;
3146 if (safe_atou64(e
, &watchdog_override_usec
) < 0)
3147 log_unit_warning(u
, "Failed to parse WATCHDOG_USEC=%s", e
);
3149 service_reset_watchdog_timeout(s
, watchdog_override_usec
);
3152 /* Notify clients about changed status or main pid */
3154 unit_add_to_dbus_queue(u
);
3157 static int service_get_timeout(Unit
*u
, usec_t
*timeout
) {
3158 Service
*s
= SERVICE(u
);
3162 if (!s
->timer_event_source
)
3165 r
= sd_event_source_get_time(s
->timer_event_source
, &t
);
3168 if (t
== USEC_INFINITY
)
3175 static void service_bus_name_owner_change(
3178 const char *old_owner
,
3179 const char *new_owner
) {
3181 Service
*s
= SERVICE(u
);
3187 assert(streq(s
->bus_name
, name
));
3188 assert(old_owner
|| new_owner
);
3190 if (old_owner
&& new_owner
)
3191 log_unit_debug(u
, "D-Bus name %s changed owner from %s to %s", name
, old_owner
, new_owner
);
3193 log_unit_debug(u
, "D-Bus name %s no longer registered by %s", name
, old_owner
);
3195 log_unit_debug(u
, "D-Bus name %s now registered by %s", name
, new_owner
);
3197 s
->bus_name_good
= !!new_owner
;
3199 /* Track the current owner, so we can reconstruct changes after a daemon reload */
3200 r
= free_and_strdup(&s
->bus_name_owner
, new_owner
);
3202 log_unit_error_errno(u
, r
, "Unable to set new bus name owner %s: %m", new_owner
);
3206 if (s
->type
== SERVICE_DBUS
) {
3208 /* service_enter_running() will figure out what to
3210 if (s
->state
== SERVICE_RUNNING
)
3211 service_enter_running(s
, SERVICE_SUCCESS
);
3212 else if (s
->state
== SERVICE_START
&& new_owner
)
3213 service_enter_start_post(s
);
3215 } else if (new_owner
&&
3217 (s
->state
== SERVICE_START
||
3218 s
->state
== SERVICE_START_POST
||
3219 s
->state
== SERVICE_RUNNING
||
3220 s
->state
== SERVICE_RELOAD
)) {
3222 _cleanup_(sd_bus_creds_unrefp
) sd_bus_creds
*creds
= NULL
;
3225 /* Try to acquire PID from bus service */
3227 r
= sd_bus_get_name_creds(u
->manager
->api_bus
, name
, SD_BUS_CREDS_PID
, &creds
);
3229 r
= sd_bus_creds_get_pid(creds
, &pid
);
3231 log_unit_debug(u
, "D-Bus name %s is now owned by process %u", name
, (unsigned) pid
);
3233 service_set_main_pid(s
, pid
);
3234 unit_watch_pid(UNIT(s
), pid
);
3239 int service_set_socket_fd(Service
*s
, int fd
, Socket
*sock
, bool selinux_context_net
) {
3240 _cleanup_free_
char *peer
= NULL
;
3246 /* This is called by the socket code when instantiating a new service for a stream socket and the socket needs
3247 * to be configured. We take ownership of the passed fd on success. */
3249 if (UNIT(s
)->load_state
!= UNIT_LOADED
)
3252 if (s
->socket_fd
>= 0)
3255 if (s
->state
!= SERVICE_DEAD
)
3258 if (getpeername_pretty(fd
, true, &peer
) >= 0) {
3260 if (UNIT(s
)->description
) {
3261 _cleanup_free_
char *a
;
3263 a
= strjoin(UNIT(s
)->description
, " (", peer
, ")", NULL
);
3267 r
= unit_set_description(UNIT(s
), a
);
3269 r
= unit_set_description(UNIT(s
), peer
);
3275 r
= unit_add_two_dependencies(UNIT(sock
), UNIT_BEFORE
, UNIT_TRIGGERS
, UNIT(s
), false);
3280 s
->socket_fd_selinux_context_net
= selinux_context_net
;
3282 unit_ref_set(&s
->accept_socket
, UNIT(sock
));
3286 static void service_reset_failed(Unit
*u
) {
3287 Service
*s
= SERVICE(u
);
3291 if (s
->state
== SERVICE_FAILED
)
3292 service_set_state(s
, SERVICE_DEAD
);
3294 s
->result
= SERVICE_SUCCESS
;
3295 s
->reload_result
= SERVICE_SUCCESS
;
3298 static int service_kill(Unit
*u
, KillWho who
, int signo
, sd_bus_error
*error
) {
3299 Service
*s
= SERVICE(u
);
3301 return unit_kill_common(u
, who
, signo
, s
->main_pid
, s
->control_pid
, error
);
3304 static int service_main_pid(Unit
*u
) {
3305 Service
*s
= SERVICE(u
);
3312 static int service_control_pid(Unit
*u
) {
3313 Service
*s
= SERVICE(u
);
3317 return s
->control_pid
;
3320 static const char* const service_restart_table
[_SERVICE_RESTART_MAX
] = {
3321 [SERVICE_RESTART_NO
] = "no",
3322 [SERVICE_RESTART_ON_SUCCESS
] = "on-success",
3323 [SERVICE_RESTART_ON_FAILURE
] = "on-failure",
3324 [SERVICE_RESTART_ON_ABNORMAL
] = "on-abnormal",
3325 [SERVICE_RESTART_ON_WATCHDOG
] = "on-watchdog",
3326 [SERVICE_RESTART_ON_ABORT
] = "on-abort",
3327 [SERVICE_RESTART_ALWAYS
] = "always",
3330 DEFINE_STRING_TABLE_LOOKUP(service_restart
, ServiceRestart
);
3332 static const char* const service_type_table
[_SERVICE_TYPE_MAX
] = {
3333 [SERVICE_SIMPLE
] = "simple",
3334 [SERVICE_FORKING
] = "forking",
3335 [SERVICE_ONESHOT
] = "oneshot",
3336 [SERVICE_DBUS
] = "dbus",
3337 [SERVICE_NOTIFY
] = "notify",
3338 [SERVICE_IDLE
] = "idle"
3341 DEFINE_STRING_TABLE_LOOKUP(service_type
, ServiceType
);
3343 static const char* const service_exec_command_table
[_SERVICE_EXEC_COMMAND_MAX
] = {
3344 [SERVICE_EXEC_START_PRE
] = "ExecStartPre",
3345 [SERVICE_EXEC_START
] = "ExecStart",
3346 [SERVICE_EXEC_START_POST
] = "ExecStartPost",
3347 [SERVICE_EXEC_RELOAD
] = "ExecReload",
3348 [SERVICE_EXEC_STOP
] = "ExecStop",
3349 [SERVICE_EXEC_STOP_POST
] = "ExecStopPost",
3352 DEFINE_STRING_TABLE_LOOKUP(service_exec_command
, ServiceExecCommand
);
3354 static const char* const notify_access_table
[_NOTIFY_ACCESS_MAX
] = {
3355 [NOTIFY_NONE
] = "none",
3356 [NOTIFY_MAIN
] = "main",
3357 [NOTIFY_ALL
] = "all"
3360 DEFINE_STRING_TABLE_LOOKUP(notify_access
, NotifyAccess
);
3362 static const char* const notify_state_table
[_NOTIFY_STATE_MAX
] = {
3363 [NOTIFY_UNKNOWN
] = "unknown",
3364 [NOTIFY_READY
] = "ready",
3365 [NOTIFY_RELOADING
] = "reloading",
3366 [NOTIFY_STOPPING
] = "stopping",
3369 DEFINE_STRING_TABLE_LOOKUP(notify_state
, NotifyState
);
3371 static const char* const service_result_table
[_SERVICE_RESULT_MAX
] = {
3372 [SERVICE_SUCCESS
] = "success",
3373 [SERVICE_FAILURE_RESOURCES
] = "resources",
3374 [SERVICE_FAILURE_TIMEOUT
] = "timeout",
3375 [SERVICE_FAILURE_EXIT_CODE
] = "exit-code",
3376 [SERVICE_FAILURE_SIGNAL
] = "signal",
3377 [SERVICE_FAILURE_CORE_DUMP
] = "core-dump",
3378 [SERVICE_FAILURE_WATCHDOG
] = "watchdog",
3379 [SERVICE_FAILURE_START_LIMIT_HIT
] = "start-limit-hit",
3382 DEFINE_STRING_TABLE_LOOKUP(service_result
, ServiceResult
);
3384 const UnitVTable service_vtable
= {
3385 .object_size
= sizeof(Service
),
3386 .exec_context_offset
= offsetof(Service
, exec_context
),
3387 .cgroup_context_offset
= offsetof(Service
, cgroup_context
),
3388 .kill_context_offset
= offsetof(Service
, kill_context
),
3389 .exec_runtime_offset
= offsetof(Service
, exec_runtime
),
3390 .dynamic_creds_offset
= offsetof(Service
, dynamic_creds
),
3396 .private_section
= "Service",
3398 .init
= service_init
,
3399 .done
= service_done
,
3400 .load
= service_load
,
3401 .release_resources
= service_release_resources
,
3403 .coldplug
= service_coldplug
,
3405 .dump
= service_dump
,
3407 .start
= service_start
,
3408 .stop
= service_stop
,
3409 .reload
= service_reload
,
3411 .can_reload
= service_can_reload
,
3413 .kill
= service_kill
,
3415 .serialize
= service_serialize
,
3416 .deserialize_item
= service_deserialize_item
,
3418 .active_state
= service_active_state
,
3419 .sub_state_to_string
= service_sub_state_to_string
,
3421 .check_gc
= service_check_gc
,
3423 .sigchld_event
= service_sigchld_event
,
3425 .reset_failed
= service_reset_failed
,
3427 .notify_cgroup_empty
= service_notify_cgroup_empty_event
,
3428 .notify_message
= service_notify_message
,
3430 .main_pid
= service_main_pid
,
3431 .control_pid
= service_control_pid
,
3433 .bus_name_owner_change
= service_bus_name_owner_change
,
3435 .bus_vtable
= bus_service_vtable
,
3436 .bus_set_property
= bus_service_set_property
,
3437 .bus_commit_properties
= bus_service_commit_properties
,
3439 .get_timeout
= service_get_timeout
,
3440 .can_transient
= true,
3442 .status_message_formats
= {
3443 .starting_stopping
= {
3444 [0] = "Starting %s...",
3445 [1] = "Stopping %s...",
3447 .finished_start_job
= {
3448 [JOB_DONE
] = "Started %s.",
3449 [JOB_FAILED
] = "Failed to start %s.",
3451 .finished_stop_job
= {
3452 [JOB_DONE
] = "Stopped %s.",
3453 [JOB_FAILED
] = "Stopped (with error) %s.",