1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
30 #include "load-fragment.h"
31 #include "load-dropin.h"
34 #include "unit-name.h"
35 #include "unit-printf.h"
36 #include "dbus-service.h"
38 #include "exit-status.h"
40 #include "path-util.h"
45 #include "bus-error.h"
47 #include "bus-kernel.h"
48 #include "formats-util.h"
49 #include "process-util.h"
51 static const UnitActiveState state_translation_table
[_SERVICE_STATE_MAX
] = {
52 [SERVICE_DEAD
] = UNIT_INACTIVE
,
53 [SERVICE_START_PRE
] = UNIT_ACTIVATING
,
54 [SERVICE_START
] = UNIT_ACTIVATING
,
55 [SERVICE_START_POST
] = UNIT_ACTIVATING
,
56 [SERVICE_RUNNING
] = UNIT_ACTIVE
,
57 [SERVICE_EXITED
] = UNIT_ACTIVE
,
58 [SERVICE_RELOAD
] = UNIT_RELOADING
,
59 [SERVICE_STOP
] = UNIT_DEACTIVATING
,
60 [SERVICE_STOP_SIGABRT
] = UNIT_DEACTIVATING
,
61 [SERVICE_STOP_SIGTERM
] = UNIT_DEACTIVATING
,
62 [SERVICE_STOP_SIGKILL
] = UNIT_DEACTIVATING
,
63 [SERVICE_STOP_POST
] = UNIT_DEACTIVATING
,
64 [SERVICE_FINAL_SIGTERM
] = UNIT_DEACTIVATING
,
65 [SERVICE_FINAL_SIGKILL
] = UNIT_DEACTIVATING
,
66 [SERVICE_FAILED
] = UNIT_FAILED
,
67 [SERVICE_AUTO_RESTART
] = UNIT_ACTIVATING
70 /* For Type=idle we never want to delay any other jobs, hence we
71 * consider idle jobs active as soon as we start working on them */
72 static const UnitActiveState state_translation_table_idle
[_SERVICE_STATE_MAX
] = {
73 [SERVICE_DEAD
] = UNIT_INACTIVE
,
74 [SERVICE_START_PRE
] = UNIT_ACTIVE
,
75 [SERVICE_START
] = UNIT_ACTIVE
,
76 [SERVICE_START_POST
] = UNIT_ACTIVE
,
77 [SERVICE_RUNNING
] = UNIT_ACTIVE
,
78 [SERVICE_EXITED
] = UNIT_ACTIVE
,
79 [SERVICE_RELOAD
] = UNIT_RELOADING
,
80 [SERVICE_STOP
] = UNIT_DEACTIVATING
,
81 [SERVICE_STOP_SIGABRT
] = UNIT_DEACTIVATING
,
82 [SERVICE_STOP_SIGTERM
] = UNIT_DEACTIVATING
,
83 [SERVICE_STOP_SIGKILL
] = UNIT_DEACTIVATING
,
84 [SERVICE_STOP_POST
] = UNIT_DEACTIVATING
,
85 [SERVICE_FINAL_SIGTERM
] = UNIT_DEACTIVATING
,
86 [SERVICE_FINAL_SIGKILL
] = UNIT_DEACTIVATING
,
87 [SERVICE_FAILED
] = UNIT_FAILED
,
88 [SERVICE_AUTO_RESTART
] = UNIT_ACTIVATING
91 static int service_dispatch_io(sd_event_source
*source
, int fd
, uint32_t events
, void *userdata
);
92 static int service_dispatch_timer(sd_event_source
*source
, usec_t usec
, void *userdata
);
93 static int service_dispatch_watchdog(sd_event_source
*source
, usec_t usec
, void *userdata
);
95 static void service_enter_signal(Service
*s
, ServiceState state
, ServiceResult f
);
96 static void service_enter_reload_by_notify(Service
*s
);
98 static void service_init(Unit
*u
) {
99 Service
*s
= SERVICE(u
);
102 assert(u
->load_state
== UNIT_STUB
);
104 s
->timeout_start_usec
= u
->manager
->default_timeout_start_usec
;
105 s
->timeout_stop_usec
= u
->manager
->default_timeout_stop_usec
;
106 s
->restart_usec
= u
->manager
->default_restart_usec
;
107 s
->type
= _SERVICE_TYPE_INVALID
;
109 s
->bus_endpoint_fd
= -1;
110 s
->guess_main_pid
= true;
112 RATELIMIT_INIT(s
->start_limit
, u
->manager
->default_start_limit_interval
, u
->manager
->default_start_limit_burst
);
114 s
->control_command_id
= _SERVICE_EXEC_COMMAND_INVALID
;
117 static void service_unwatch_control_pid(Service
*s
) {
120 if (s
->control_pid
<= 0)
123 unit_unwatch_pid(UNIT(s
), s
->control_pid
);
127 static void service_unwatch_main_pid(Service
*s
) {
130 if (s
->main_pid
<= 0)
133 unit_unwatch_pid(UNIT(s
), s
->main_pid
);
137 static void service_unwatch_pid_file(Service
*s
) {
138 if (!s
->pid_file_pathspec
)
141 log_unit_debug(UNIT(s
)->id
, "Stopping watch for %s's PID file %s", UNIT(s
)->id
, s
->pid_file_pathspec
->path
);
142 path_spec_unwatch(s
->pid_file_pathspec
);
143 path_spec_done(s
->pid_file_pathspec
);
144 free(s
->pid_file_pathspec
);
145 s
->pid_file_pathspec
= NULL
;
148 static int service_set_main_pid(Service
*s
, pid_t pid
) {
159 if (s
->main_pid
== pid
&& s
->main_pid_known
)
162 if (s
->main_pid
!= pid
) {
163 service_unwatch_main_pid(s
);
164 exec_status_start(&s
->main_exec_status
, pid
);
168 s
->main_pid_known
= true;
170 if (get_parent_of_pid(pid
, &ppid
) >= 0 && ppid
!= getpid()) {
171 log_unit_warning(UNIT(s
)->id
, "%s: Supervising process "PID_FMT
" which is not our child. We'll most likely not notice when it exits.", UNIT(s
)->id
, pid
);
172 s
->main_pid_alien
= true;
174 s
->main_pid_alien
= false;
179 static void service_close_socket_fd(Service
*s
) {
182 s
->socket_fd
= asynchronous_close(s
->socket_fd
);
185 static void service_connection_unref(Service
*s
) {
188 if (!UNIT_ISSET(s
->accept_socket
))
191 socket_connection_unref(SOCKET(UNIT_DEREF(s
->accept_socket
)));
192 unit_ref_unset(&s
->accept_socket
);
195 static void service_stop_watchdog(Service
*s
) {
198 s
->watchdog_event_source
= sd_event_source_unref(s
->watchdog_event_source
);
199 s
->watchdog_timestamp
= DUAL_TIMESTAMP_NULL
;
202 static void service_start_watchdog(Service
*s
) {
207 if (s
->watchdog_usec
<= 0)
210 if (s
->watchdog_event_source
) {
211 r
= sd_event_source_set_time(s
->watchdog_event_source
, s
->watchdog_timestamp
.monotonic
+ s
->watchdog_usec
);
213 log_unit_warning_errno(UNIT(s
)->id
, r
, "%s failed to reset watchdog timer: %m", UNIT(s
)->id
);
217 r
= sd_event_source_set_enabled(s
->watchdog_event_source
, SD_EVENT_ONESHOT
);
219 r
= sd_event_add_time(
220 UNIT(s
)->manager
->event
,
221 &s
->watchdog_event_source
,
223 s
->watchdog_timestamp
.monotonic
+ s
->watchdog_usec
, 0,
224 service_dispatch_watchdog
, s
);
226 log_unit_warning_errno(UNIT(s
)->id
, r
, "%s failed to add watchdog timer: %m", UNIT(s
)->id
);
230 /* Let's process everything else which might be a sign
231 * of living before we consider a service died. */
232 r
= sd_event_source_set_priority(s
->watchdog_event_source
, SD_EVENT_PRIORITY_IDLE
);
236 log_unit_warning_errno(UNIT(s
)->id
, r
, "%s failed to install watchdog timer: %m", UNIT(s
)->id
);
239 static void service_reset_watchdog(Service
*s
) {
242 dual_timestamp_get(&s
->watchdog_timestamp
);
243 service_start_watchdog(s
);
246 static void service_fd_store_unlink(ServiceFDStore
*fs
) {
252 assert(fs
->service
->n_fd_store
> 0);
253 LIST_REMOVE(fd_store
, fs
->service
->fd_store
, fs
);
254 fs
->service
->n_fd_store
--;
257 if (fs
->event_source
) {
258 sd_event_source_set_enabled(fs
->event_source
, SD_EVENT_OFF
);
259 sd_event_source_unref(fs
->event_source
);
266 static void service_release_resources(Unit
*u
) {
267 Service
*s
= SERVICE(u
);
274 log_debug("Releasing all resources for %s", u
->id
);
277 service_fd_store_unlink(s
->fd_store
);
279 assert(s
->n_fd_store
== 0);
282 static void service_done(Unit
*u
) {
283 Service
*s
= SERVICE(u
);
290 free(s
->status_text
);
291 s
->status_text
= NULL
;
294 s
->reboot_arg
= NULL
;
296 s
->exec_runtime
= exec_runtime_unref(s
->exec_runtime
);
297 exec_command_free_array(s
->exec_command
, _SERVICE_EXEC_COMMAND_MAX
);
298 s
->control_command
= NULL
;
299 s
->main_command
= NULL
;
301 exit_status_set_free(&s
->restart_prevent_status
);
302 exit_status_set_free(&s
->restart_force_status
);
303 exit_status_set_free(&s
->success_status
);
305 /* This will leak a process, but at least no memory or any of
307 service_unwatch_main_pid(s
);
308 service_unwatch_control_pid(s
);
309 service_unwatch_pid_file(s
);
312 unit_unwatch_bus_name(u
, s
->bus_name
);
317 s
->bus_endpoint_fd
= safe_close(s
->bus_endpoint_fd
);
318 service_close_socket_fd(s
);
319 service_connection_unref(s
);
321 unit_ref_unset(&s
->accept_socket
);
323 service_stop_watchdog(s
);
325 s
->timer_event_source
= sd_event_source_unref(s
->timer_event_source
);
327 service_release_resources(u
);
330 static int on_fd_store_io(sd_event_source
*e
, int fd
, uint32_t revents
, void *userdata
) {
331 ServiceFDStore
*fs
= userdata
;
336 /* If we get either EPOLLHUP or EPOLLERR, it's time to remove this entry from the fd store */
337 service_fd_store_unlink(fs
);
341 static int service_add_fd_store(Service
*s
, int fd
) {
348 if (s
->n_fd_store
>= s
->n_fd_store_max
)
351 LIST_FOREACH(fd_store
, fs
, s
->fd_store
) {
352 r
= same_fd(fs
->fd
, fd
);
356 /* Already included */
362 fs
= new0(ServiceFDStore
, 1);
369 r
= sd_event_add_io(UNIT(s
)->manager
->event
, &fs
->event_source
, fd
, 0, on_fd_store_io
, fs
);
375 LIST_PREPEND(fd_store
, s
->fd_store
, fs
);
381 static int service_add_fd_store_set(Service
*s
, FDSet
*fds
) {
386 if (fdset_size(fds
) <= 0)
389 while (s
->n_fd_store
< s
->n_fd_store_max
) {
390 _cleanup_close_
int fd
= -1;
392 fd
= fdset_steal_first(fds
);
396 r
= service_add_fd_store(s
, fd
);
398 return log_unit_error_errno(UNIT(s
)->id
, r
, "%s: Couldn't add fd to fd store: %m", UNIT(s
)->id
);
401 log_unit_debug(UNIT(s
)->id
, "%s: added fd to fd store.", UNIT(s
)->id
);
406 if (fdset_size(fds
) > 0)
407 log_unit_warning(UNIT(s
)->id
, "%s: tried to store more fds than FDStoreMax=%u allows, closing remaining.", UNIT(s
)->id
, s
->n_fd_store_max
);
412 static int service_arm_timer(Service
*s
, usec_t usec
) {
417 if (s
->timer_event_source
) {
418 r
= sd_event_source_set_time(s
->timer_event_source
, now(CLOCK_MONOTONIC
) + usec
);
422 return sd_event_source_set_enabled(s
->timer_event_source
, SD_EVENT_ONESHOT
);
425 return sd_event_add_time(
426 UNIT(s
)->manager
->event
,
427 &s
->timer_event_source
,
429 now(CLOCK_MONOTONIC
) + usec
, 0,
430 service_dispatch_timer
, s
);
433 static int service_verify(Service
*s
) {
436 if (UNIT(s
)->load_state
!= UNIT_LOADED
)
439 if (!s
->exec_command
[SERVICE_EXEC_START
] && !s
->exec_command
[SERVICE_EXEC_STOP
]) {
440 log_unit_error(UNIT(s
)->id
, "%s lacks both ExecStart= and ExecStop= setting. Refusing.", UNIT(s
)->id
);
444 if (s
->type
!= SERVICE_ONESHOT
&& !s
->exec_command
[SERVICE_EXEC_START
]) {
445 log_unit_error(UNIT(s
)->id
, "%s has no ExecStart= setting, which is only allowed for Type=oneshot services. Refusing.", UNIT(s
)->id
);
449 if (!s
->remain_after_exit
&& !s
->exec_command
[SERVICE_EXEC_START
]) {
450 log_unit_error(UNIT(s
)->id
, "%s has no ExecStart= setting, which is only allowed for RemainAfterExit=yes services. Refusing.", UNIT(s
)->id
);
454 if (s
->type
!= SERVICE_ONESHOT
&& s
->exec_command
[SERVICE_EXEC_START
]->command_next
) {
455 log_unit_error(UNIT(s
)->id
, "%s has more than one ExecStart= setting, which is only allowed for Type=oneshot services. Refusing.", UNIT(s
)->id
);
459 if (s
->type
== SERVICE_ONESHOT
&& s
->restart
!= SERVICE_RESTART_NO
) {
460 log_unit_error(UNIT(s
)->id
, "%s has Restart= setting other than no, which isn't allowed for Type=oneshot services. Refusing.", UNIT(s
)->id
);
464 if (s
->type
== SERVICE_ONESHOT
&& !exit_status_set_is_empty(&s
->restart_force_status
)) {
465 log_unit_error(UNIT(s
)->id
, "%s has RestartForceStatus= set, which isn't allowed for Type=oneshot services. Refusing.", UNIT(s
)->id
);
469 if (s
->type
== SERVICE_DBUS
&& !s
->bus_name
) {
470 log_unit_error(UNIT(s
)->id
, "%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s
)->id
);
474 if (s
->bus_name
&& s
->type
!= SERVICE_DBUS
)
475 log_unit_warning(UNIT(s
)->id
, "%s has a D-Bus service name specified, but is not of type dbus. Ignoring.", UNIT(s
)->id
);
477 if (s
->exec_context
.pam_name
&& !(s
->kill_context
.kill_mode
== KILL_CONTROL_GROUP
|| s
->kill_context
.kill_mode
== KILL_MIXED
)) {
478 log_unit_error(UNIT(s
)->id
, "%s has PAM enabled. Kill mode must be set to 'control-group' or 'mixed'. Refusing.", UNIT(s
)->id
);
485 static int service_add_default_dependencies(Service
*s
) {
490 /* Add a number of automatic dependencies useful for the
491 * majority of services. */
493 /* First, pull in base system */
494 r
= unit_add_two_dependencies_by_name(UNIT(s
), UNIT_AFTER
, UNIT_REQUIRES
, SPECIAL_BASIC_TARGET
, NULL
, true);
498 /* Second, activate normal shutdown */
499 return unit_add_two_dependencies_by_name(UNIT(s
), UNIT_BEFORE
, UNIT_CONFLICTS
, SPECIAL_SHUTDOWN_TARGET
, NULL
, true);
502 static void service_fix_output(Service
*s
) {
505 /* If nothing has been explicitly configured, patch default
506 * output in. If input is socket/tty we avoid this however,
507 * since in that case we want output to default to the same
508 * place as we read input from. */
510 if (s
->exec_context
.std_error
== EXEC_OUTPUT_INHERIT
&&
511 s
->exec_context
.std_output
== EXEC_OUTPUT_INHERIT
&&
512 s
->exec_context
.std_input
== EXEC_INPUT_NULL
)
513 s
->exec_context
.std_error
= UNIT(s
)->manager
->default_std_error
;
515 if (s
->exec_context
.std_output
== EXEC_OUTPUT_INHERIT
&&
516 s
->exec_context
.std_input
== EXEC_INPUT_NULL
)
517 s
->exec_context
.std_output
= UNIT(s
)->manager
->default_std_output
;
520 static int service_add_extras(Service
*s
) {
525 if (s
->type
== _SERVICE_TYPE_INVALID
) {
526 /* Figure out a type automatically */
528 s
->type
= SERVICE_DBUS
;
529 else if (s
->exec_command
[SERVICE_EXEC_START
])
530 s
->type
= SERVICE_SIMPLE
;
532 s
->type
= SERVICE_ONESHOT
;
535 /* Oneshot services have disabled start timeout by default */
536 if (s
->type
== SERVICE_ONESHOT
&& !s
->start_timeout_defined
)
537 s
->timeout_start_usec
= 0;
539 service_fix_output(s
);
541 r
= unit_patch_contexts(UNIT(s
));
545 r
= unit_add_exec_dependencies(UNIT(s
), &s
->exec_context
);
549 r
= unit_add_default_slice(UNIT(s
), &s
->cgroup_context
);
553 if (s
->type
== SERVICE_NOTIFY
&& s
->notify_access
== NOTIFY_NONE
)
554 s
->notify_access
= NOTIFY_MAIN
;
556 if (s
->watchdog_usec
> 0 && s
->notify_access
== NOTIFY_NONE
)
557 s
->notify_access
= NOTIFY_MAIN
;
563 n
= strjoina(s
->bus_name
, ".busname");
564 r
= unit_add_dependency_by_name(UNIT(s
), UNIT_AFTER
, n
, NULL
, true);
569 r
= unit_watch_bus_name(UNIT(s
), s
->bus_name
);
574 if (UNIT(s
)->default_dependencies
) {
575 r
= service_add_default_dependencies(s
);
583 static int service_load(Unit
*u
) {
584 Service
*s
= SERVICE(u
);
589 /* Load a .service file */
590 r
= unit_load_fragment(u
);
594 /* Still nothing found? Then let's give up */
595 if (u
->load_state
== UNIT_STUB
)
598 /* This is a new unit? Then let's add in some extras */
599 if (u
->load_state
== UNIT_LOADED
) {
601 /* We were able to load something, then let's add in
602 * the dropin directories. */
603 r
= unit_load_dropin(u
);
607 /* This is a new unit? Then let's add in some
609 r
= service_add_extras(s
);
614 return service_verify(s
);
617 static void service_dump(Unit
*u
, FILE *f
, const char *prefix
) {
618 ServiceExecCommand c
;
619 Service
*s
= SERVICE(u
);
624 prefix
= strempty(prefix
);
625 prefix2
= strjoina(prefix
, "\t");
628 "%sService State: %s\n"
630 "%sReload Result: %s\n"
631 "%sPermissionsStartOnly: %s\n"
632 "%sRootDirectoryStartOnly: %s\n"
633 "%sRemainAfterExit: %s\n"
634 "%sGuessMainPID: %s\n"
637 "%sNotifyAccess: %s\n"
638 "%sNotifyState: %s\n",
639 prefix
, service_state_to_string(s
->state
),
640 prefix
, service_result_to_string(s
->result
),
641 prefix
, service_result_to_string(s
->reload_result
),
642 prefix
, yes_no(s
->permissions_start_only
),
643 prefix
, yes_no(s
->root_directory_start_only
),
644 prefix
, yes_no(s
->remain_after_exit
),
645 prefix
, yes_no(s
->guess_main_pid
),
646 prefix
, service_type_to_string(s
->type
),
647 prefix
, service_restart_to_string(s
->restart
),
648 prefix
, notify_access_to_string(s
->notify_access
),
649 prefix
, notify_state_to_string(s
->notify_state
));
651 if (s
->control_pid
> 0)
653 "%sControl PID: "PID_FMT
"\n",
654 prefix
, s
->control_pid
);
658 "%sMain PID: "PID_FMT
"\n"
659 "%sMain PID Known: %s\n"
660 "%sMain PID Alien: %s\n",
662 prefix
, yes_no(s
->main_pid_known
),
663 prefix
, yes_no(s
->main_pid_alien
));
668 prefix
, s
->pid_file
);
673 "%sBus Name Good: %s\n",
675 prefix
, yes_no(s
->bus_name_good
));
677 kill_context_dump(&s
->kill_context
, f
, prefix
);
678 exec_context_dump(&s
->exec_context
, f
, prefix
);
680 for (c
= 0; c
< _SERVICE_EXEC_COMMAND_MAX
; c
++) {
682 if (!s
->exec_command
[c
])
685 fprintf(f
, "%s-> %s:\n",
686 prefix
, service_exec_command_to_string(c
));
688 exec_command_dump_list(s
->exec_command
[c
], f
, prefix2
);
692 fprintf(f
, "%sStatus Text: %s\n",
693 prefix
, s
->status_text
);
695 if (s
->n_fd_store_max
> 0) {
697 "%sFile Descriptor Store Max: %u\n"
698 "%sFile Descriptor Store Current: %u\n",
699 prefix
, s
->n_fd_store_max
,
700 prefix
, s
->n_fd_store
);
704 static int service_load_pid_file(Service
*s
, bool may_warn
) {
705 _cleanup_free_
char *k
= NULL
;
714 r
= read_one_line_file(s
->pid_file
, &k
);
717 log_unit_info(UNIT(s
)->id
, "PID file %s not readable (yet?) after %s.", s
->pid_file
, service_state_to_string(s
->state
));
721 r
= parse_pid(k
, &pid
);
724 log_unit_info_errno(UNIT(s
)->id
, r
, "Failed to read PID from file %s: %m", s
->pid_file
);
728 if (!pid_is_alive(pid
)) {
730 log_unit_info(UNIT(s
)->id
, "PID "PID_FMT
" read from file %s does not exist or is a zombie.", pid
, s
->pid_file
);
734 if (s
->main_pid_known
) {
735 if (pid
== s
->main_pid
)
738 log_unit_debug(UNIT(s
)->id
, "Main PID changing: "PID_FMT
" -> "PID_FMT
, s
->main_pid
, pid
);
740 service_unwatch_main_pid(s
);
741 s
->main_pid_known
= false;
743 log_unit_debug(UNIT(s
)->id
, "Main PID loaded: "PID_FMT
, pid
);
745 r
= service_set_main_pid(s
, pid
);
749 r
= unit_watch_pid(UNIT(s
), pid
);
751 /* FIXME: we need to do something here */
752 log_unit_warning(UNIT(s
)->id
, "Failed to watch PID "PID_FMT
" from service %s", pid
, UNIT(s
)->id
);
759 static int service_search_main_pid(Service
*s
) {
765 /* If we know it anyway, don't ever fallback to unreliable
767 if (s
->main_pid_known
)
770 if (!s
->guess_main_pid
)
773 assert(s
->main_pid
<= 0);
775 pid
= unit_search_main_pid(UNIT(s
));
779 log_unit_debug(UNIT(s
)->id
, "Main PID guessed: "PID_FMT
, pid
);
780 r
= service_set_main_pid(s
, pid
);
784 r
= unit_watch_pid(UNIT(s
), pid
);
786 /* FIXME: we need to do something here */
787 log_unit_warning(UNIT(s
)->id
, "Failed to watch PID "PID_FMT
" from service %s", pid
, UNIT(s
)->id
);
794 static void service_set_state(Service
*s
, ServiceState state
) {
795 ServiceState old_state
;
796 const UnitActiveState
*table
;
800 table
= s
->type
== SERVICE_IDLE
? state_translation_table_idle
: state_translation_table
;
802 old_state
= s
->state
;
805 service_unwatch_pid_file(s
);
808 SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
,
810 SERVICE_STOP
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
811 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
,
812 SERVICE_AUTO_RESTART
))
813 s
->timer_event_source
= sd_event_source_unref(s
->timer_event_source
);
816 SERVICE_START
, SERVICE_START_POST
,
817 SERVICE_RUNNING
, SERVICE_RELOAD
,
818 SERVICE_STOP
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
819 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
)) {
820 service_unwatch_main_pid(s
);
821 s
->main_command
= NULL
;
825 SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
,
827 SERVICE_STOP
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
828 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
)) {
829 service_unwatch_control_pid(s
);
830 s
->control_command
= NULL
;
831 s
->control_command_id
= _SERVICE_EXEC_COMMAND_INVALID
;
834 if (IN_SET(state
, SERVICE_DEAD
, SERVICE_FAILED
, SERVICE_AUTO_RESTART
))
835 unit_unwatch_all_pids(UNIT(s
));
838 SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
,
839 SERVICE_RUNNING
, SERVICE_RELOAD
,
840 SERVICE_STOP
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
841 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
) &&
842 !(state
== SERVICE_DEAD
&& UNIT(s
)->job
)) {
843 service_close_socket_fd(s
);
844 service_connection_unref(s
);
847 if (!IN_SET(state
, SERVICE_START_POST
, SERVICE_RUNNING
, SERVICE_RELOAD
))
848 service_stop_watchdog(s
);
850 /* For the inactive states unit_notify() will trim the cgroup,
851 * but for exit we have to do that ourselves... */
852 if (state
== SERVICE_EXITED
&& UNIT(s
)->manager
->n_reloading
<= 0)
853 unit_destroy_cgroup_if_empty(UNIT(s
));
855 /* For remain_after_exit services, let's see if we can "release" the
856 * hold on the console, since unit_notify() only does that in case of
858 if (state
== SERVICE_EXITED
&&
859 s
->remain_after_exit
&&
860 UNIT(s
)->manager
->n_on_console
> 0) {
864 ec
= unit_get_exec_context(UNIT(s
));
865 if (ec
&& exec_context_may_touch_console(ec
)) {
866 Manager
*m
= UNIT(s
)->manager
;
869 if (m
->n_on_console
== 0)
870 /* unset no_console_output flag, since the console is free */
871 m
->no_console_output
= false;
875 if (old_state
!= state
)
876 log_unit_debug(UNIT(s
)->id
, "%s changed %s -> %s", UNIT(s
)->id
, service_state_to_string(old_state
), service_state_to_string(state
));
878 unit_notify(UNIT(s
), table
[old_state
], table
[state
], s
->reload_result
== SERVICE_SUCCESS
);
879 s
->reload_result
= SERVICE_SUCCESS
;
882 static int service_coldplug(Unit
*u
, Hashmap
*deferred_work
) {
883 Service
*s
= SERVICE(u
);
887 assert(s
->state
== SERVICE_DEAD
);
889 if (s
->deserialized_state
!= s
->state
) {
891 if (IN_SET(s
->deserialized_state
,
892 SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
,
894 SERVICE_STOP
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
895 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
)) {
899 k
= IN_SET(s
->deserialized_state
, SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
, SERVICE_RELOAD
) ? s
->timeout_start_usec
: s
->timeout_stop_usec
;
901 /* For the start/stop timeouts 0 means off */
903 r
= service_arm_timer(s
, k
);
909 if (s
->deserialized_state
== SERVICE_AUTO_RESTART
) {
911 /* The restart timeouts 0 means immediately */
912 r
= service_arm_timer(s
, s
->restart_usec
);
917 if (pid_is_unwaited(s
->main_pid
) &&
918 ((s
->deserialized_state
== SERVICE_START
&& IN_SET(s
->type
, SERVICE_FORKING
, SERVICE_DBUS
, SERVICE_ONESHOT
, SERVICE_NOTIFY
)) ||
919 IN_SET(s
->deserialized_state
,
920 SERVICE_START
, SERVICE_START_POST
,
921 SERVICE_RUNNING
, SERVICE_RELOAD
,
922 SERVICE_STOP
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
923 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
))) {
924 r
= unit_watch_pid(UNIT(s
), s
->main_pid
);
929 if (pid_is_unwaited(s
->control_pid
) &&
930 IN_SET(s
->deserialized_state
,
931 SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
,
933 SERVICE_STOP
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
934 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
)) {
935 r
= unit_watch_pid(UNIT(s
), s
->control_pid
);
940 if (!IN_SET(s
->deserialized_state
, SERVICE_DEAD
, SERVICE_FAILED
, SERVICE_AUTO_RESTART
))
941 unit_watch_all_pids(UNIT(s
));
943 if (IN_SET(s
->deserialized_state
, SERVICE_START_POST
, SERVICE_RUNNING
, SERVICE_RELOAD
))
944 service_start_watchdog(s
);
946 service_set_state(s
, s
->deserialized_state
);
952 static int service_collect_fds(Service
*s
, int **fds
, unsigned *n_fds
) {
953 _cleanup_free_
int *rfds
= NULL
;
963 if (s
->socket_fd
>= 0)
966 SET_FOREACH(u
, UNIT(s
)->dependencies
[UNIT_TRIGGERED_BY
], i
) {
971 if (u
->type
!= UNIT_SOCKET
)
976 r
= socket_collect_fds(sock
, &cfds
, &cn_fds
);
991 t
= realloc(rfds
, (rn_fds
+ cn_fds
) * sizeof(int));
997 memcpy(t
+ rn_fds
, cfds
, cn_fds
* sizeof(int));
1006 if (s
->n_fd_store
> 0) {
1010 t
= realloc(rfds
, (rn_fds
+ s
->n_fd_store
) * sizeof(int));
1015 LIST_FOREACH(fd_store
, fs
, s
->fd_store
)
1016 rfds
[rn_fds
++] = fs
->fd
;
1026 static int service_spawn(
1031 bool apply_permissions
,
1033 bool apply_tty_stdin
,
1040 _cleanup_free_
int *fdsbuf
= NULL
;
1041 unsigned n_fds
= 0, n_env
= 0;
1042 _cleanup_free_
char *bus_endpoint_path
= NULL
;
1043 _cleanup_strv_free_
char
1044 **argv
= NULL
, **final_env
= NULL
, **our_env
= NULL
;
1046 ExecParameters exec_params
= {
1047 .apply_permissions
= apply_permissions
,
1048 .apply_chroot
= apply_chroot
,
1049 .apply_tty_stdin
= apply_tty_stdin
,
1050 .bus_endpoint_fd
= -1,
1051 .selinux_context_net
= s
->socket_fd_selinux_context_net
1058 (void) unit_realize_cgroup(UNIT(s
));
1059 if (s
->reset_cpu_usage
) {
1060 (void) unit_reset_cpu_usage(UNIT(s
));
1061 s
->reset_cpu_usage
= false;
1064 r
= unit_setup_exec_runtime(UNIT(s
));
1069 s
->exec_context
.std_input
== EXEC_INPUT_SOCKET
||
1070 s
->exec_context
.std_output
== EXEC_OUTPUT_SOCKET
||
1071 s
->exec_context
.std_error
== EXEC_OUTPUT_SOCKET
) {
1073 if (s
->socket_fd
>= 0) {
1074 fds
= &s
->socket_fd
;
1077 r
= service_collect_fds(s
, &fdsbuf
, &n_fds
);
1086 r
= service_arm_timer(s
, timeout
);
1090 s
->timer_event_source
= sd_event_source_unref(s
->timer_event_source
);
1092 r
= unit_full_printf_strv(UNIT(s
), c
->argv
, &argv
);
1096 our_env
= new0(char*, 6);
1102 if (is_control
? s
->notify_access
== NOTIFY_ALL
: s
->notify_access
!= NOTIFY_NONE
)
1103 if (asprintf(our_env
+ n_env
++, "NOTIFY_SOCKET=%s", UNIT(s
)->manager
->notify_socket
) < 0) {
1108 if (s
->main_pid
> 0)
1109 if (asprintf(our_env
+ n_env
++, "MAINPID="PID_FMT
, s
->main_pid
) < 0) {
1114 if (UNIT(s
)->manager
->running_as
!= SYSTEMD_SYSTEM
)
1115 if (asprintf(our_env
+ n_env
++, "MANAGERPID="PID_FMT
, getpid()) < 0) {
1120 if (UNIT_DEREF(s
->accept_socket
)) {
1121 union sockaddr_union sa
;
1122 socklen_t salen
= sizeof(sa
);
1124 r
= getpeername(s
->socket_fd
, &sa
.sa
, &salen
);
1130 if (IN_SET(sa
.sa
.sa_family
, AF_INET
, AF_INET6
)) {
1131 _cleanup_free_
char *addr
= NULL
;
1135 r
= sockaddr_pretty(&sa
.sa
, salen
, true, false, &addr
);
1139 t
= strappend("REMOTE_ADDR=", addr
);
1144 our_env
[n_env
++] = t
;
1146 port
= sockaddr_port(&sa
.sa
);
1152 if (asprintf(&t
, "REMOTE_PORT=%u", port
) < 0) {
1156 our_env
[n_env
++] = t
;
1160 final_env
= strv_env_merge(2, UNIT(s
)->manager
->environment
, our_env
, NULL
);
1166 if (is_control
&& UNIT(s
)->cgroup_path
) {
1167 path
= strjoina(UNIT(s
)->cgroup_path
, "/control");
1168 cg_create(SYSTEMD_CGROUP_CONTROLLER
, path
);
1170 path
= UNIT(s
)->cgroup_path
;
1173 if (s
->exec_context
.bus_endpoint
) {
1174 r
= bus_kernel_create_endpoint(UNIT(s
)->manager
->running_as
== SYSTEMD_SYSTEM
? "system" : "user",
1175 UNIT(s
)->id
, &bus_endpoint_path
);
1179 /* Pass the fd to the exec_params so that the child process can upload the policy.
1180 * Keep a reference to the fd in the service, so the endpoint is kept alive as long
1181 * as the service is running. */
1182 exec_params
.bus_endpoint_fd
= s
->bus_endpoint_fd
= r
;
1186 exec_params
.argv
= argv
;
1187 exec_params
.fds
= fds
;
1188 exec_params
.n_fds
= n_fds
;
1189 exec_params
.environment
= final_env
;
1190 exec_params
.confirm_spawn
= UNIT(s
)->manager
->confirm_spawn
;
1191 exec_params
.cgroup_supported
= UNIT(s
)->manager
->cgroup_supported
;
1192 exec_params
.cgroup_path
= path
;
1193 exec_params
.cgroup_delegate
= s
->cgroup_context
.delegate
;
1194 exec_params
.runtime_prefix
= manager_get_runtime_prefix(UNIT(s
)->manager
);
1195 exec_params
.unit_id
= UNIT(s
)->id
;
1196 exec_params
.watchdog_usec
= s
->watchdog_usec
;
1197 exec_params
.bus_endpoint_path
= bus_endpoint_path
;
1198 if (s
->type
== SERVICE_IDLE
)
1199 exec_params
.idle_pipe
= UNIT(s
)->manager
->idle_pipe
;
1209 r
= unit_watch_pid(UNIT(s
), pid
);
1211 /* FIXME: we need to do something here */
1220 s
->timer_event_source
= sd_event_source_unref(s
->timer_event_source
);
1225 static int main_pid_good(Service
*s
) {
1228 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1231 /* If we know the pid file, then lets just check if it is
1233 if (s
->main_pid_known
) {
1235 /* If it's an alien child let's check if it is still
1237 if (s
->main_pid_alien
&& s
->main_pid
> 0)
1238 return pid_is_alive(s
->main_pid
);
1240 /* .. otherwise assume we'll get a SIGCHLD for it,
1241 * which we really should wait for to collect exit
1242 * status and code */
1243 return s
->main_pid
> 0;
1246 /* We don't know the pid */
1250 _pure_
static int control_pid_good(Service
*s
) {
1253 return s
->control_pid
> 0;
1256 static int cgroup_good(Service
*s
) {
1261 if (!UNIT(s
)->cgroup_path
)
1264 r
= cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER
, UNIT(s
)->cgroup_path
, true);
1271 static void service_enter_dead(Service
*s
, ServiceResult f
, bool allow_restart
) {
1275 if (f
!= SERVICE_SUCCESS
)
1278 service_set_state(s
, s
->result
!= SERVICE_SUCCESS
? SERVICE_FAILED
: SERVICE_DEAD
);
1280 if (s
->result
!= SERVICE_SUCCESS
) {
1281 log_unit_warning(UNIT(s
)->id
, "%s failed.", UNIT(s
)->id
);
1282 failure_action(UNIT(s
)->manager
, s
->failure_action
, s
->reboot_arg
);
1285 if (allow_restart
&&
1286 !s
->forbid_restart
&&
1287 (s
->restart
== SERVICE_RESTART_ALWAYS
||
1288 (s
->restart
== SERVICE_RESTART_ON_SUCCESS
&& s
->result
== SERVICE_SUCCESS
) ||
1289 (s
->restart
== SERVICE_RESTART_ON_FAILURE
&& s
->result
!= SERVICE_SUCCESS
) ||
1290 (s
->restart
== SERVICE_RESTART_ON_ABNORMAL
&& !IN_SET(s
->result
, SERVICE_SUCCESS
, SERVICE_FAILURE_EXIT_CODE
)) ||
1291 (s
->restart
== SERVICE_RESTART_ON_WATCHDOG
&& s
->result
== SERVICE_FAILURE_WATCHDOG
) ||
1292 (s
->restart
== SERVICE_RESTART_ON_ABORT
&& IN_SET(s
->result
, SERVICE_FAILURE_SIGNAL
, SERVICE_FAILURE_CORE_DUMP
)) ||
1293 (s
->main_exec_status
.code
== CLD_EXITED
&& set_contains(s
->restart_force_status
.status
, INT_TO_PTR(s
->main_exec_status
.status
))) ||
1294 (IN_SET(s
->main_exec_status
.code
, CLD_KILLED
, CLD_DUMPED
) && set_contains(s
->restart_force_status
.signal
, INT_TO_PTR(s
->main_exec_status
.status
)))) &&
1295 (s
->main_exec_status
.code
!= CLD_EXITED
|| !set_contains(s
->restart_prevent_status
.status
, INT_TO_PTR(s
->main_exec_status
.status
))) &&
1296 (!IN_SET(s
->main_exec_status
.code
, CLD_KILLED
, CLD_DUMPED
) || !set_contains(s
->restart_prevent_status
.signal
, INT_TO_PTR(s
->main_exec_status
.status
)))) {
1298 r
= service_arm_timer(s
, s
->restart_usec
);
1302 service_set_state(s
, SERVICE_AUTO_RESTART
);
1305 s
->forbid_restart
= false;
1307 /* We want fresh tmpdirs in case service is started again immediately */
1308 exec_runtime_destroy(s
->exec_runtime
);
1309 s
->exec_runtime
= exec_runtime_unref(s
->exec_runtime
);
1311 /* Also, remove the runtime directory in */
1312 exec_context_destroy_runtime_directory(&s
->exec_context
, manager_get_runtime_prefix(UNIT(s
)->manager
));
1314 /* Try to delete the pid file. At this point it will be
1315 * out-of-date, and some software might be confused by it, so
1316 * let's remove it. */
1318 unlink_noerrno(s
->pid_file
);
1323 log_unit_warning_errno(UNIT(s
)->id
, r
, "%s failed to run install restart timer: %m", UNIT(s
)->id
);
1324 service_enter_dead(s
, SERVICE_FAILURE_RESOURCES
, false);
1327 static void service_enter_stop_post(Service
*s
, ServiceResult f
) {
1331 if (f
!= SERVICE_SUCCESS
)
1334 service_unwatch_control_pid(s
);
1335 unit_watch_all_pids(UNIT(s
));
1337 s
->control_command
= s
->exec_command
[SERVICE_EXEC_STOP_POST
];
1338 if (s
->control_command
) {
1339 s
->control_command_id
= SERVICE_EXEC_STOP_POST
;
1341 r
= service_spawn(s
,
1343 s
->timeout_stop_usec
,
1345 !s
->permissions_start_only
,
1346 !s
->root_directory_start_only
,
1353 service_set_state(s
, SERVICE_STOP_POST
);
1355 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, SERVICE_SUCCESS
);
1360 log_unit_warning_errno(UNIT(s
)->id
, r
, "%s failed to run 'stop-post' task: %m", UNIT(s
)->id
);
1361 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
1364 static int state_to_kill_operation(ServiceState state
) {
1367 case SERVICE_STOP_SIGABRT
:
1370 case SERVICE_STOP_SIGTERM
:
1371 case SERVICE_FINAL_SIGTERM
:
1372 return KILL_TERMINATE
;
1374 case SERVICE_STOP_SIGKILL
:
1375 case SERVICE_FINAL_SIGKILL
:
1379 return _KILL_OPERATION_INVALID
;
1383 static void service_enter_signal(Service
*s
, ServiceState state
, ServiceResult f
) {
1388 if (f
!= SERVICE_SUCCESS
)
1391 unit_watch_all_pids(UNIT(s
));
1393 r
= unit_kill_context(
1396 state_to_kill_operation(state
),
1405 if (s
->timeout_stop_usec
> 0) {
1406 r
= service_arm_timer(s
, s
->timeout_stop_usec
);
1411 service_set_state(s
, state
);
1412 } else if (IN_SET(state
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
) && s
->kill_context
.send_sigkill
)
1413 service_enter_signal(s
, SERVICE_STOP_SIGKILL
, SERVICE_SUCCESS
);
1414 else if (IN_SET(state
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
))
1415 service_enter_stop_post(s
, SERVICE_SUCCESS
);
1416 else if (state
== SERVICE_FINAL_SIGTERM
&& s
->kill_context
.send_sigkill
)
1417 service_enter_signal(s
, SERVICE_FINAL_SIGKILL
, SERVICE_SUCCESS
);
1419 service_enter_dead(s
, SERVICE_SUCCESS
, true);
1424 log_unit_warning_errno(UNIT(s
)->id
, r
, "%s failed to kill processes: %m", UNIT(s
)->id
);
1426 if (IN_SET(state
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
))
1427 service_enter_stop_post(s
, SERVICE_FAILURE_RESOURCES
);
1429 service_enter_dead(s
, SERVICE_FAILURE_RESOURCES
, true);
1432 static void service_enter_stop_by_notify(Service
*s
) {
1435 unit_watch_all_pids(UNIT(s
));
1437 if (s
->timeout_stop_usec
> 0)
1438 service_arm_timer(s
, s
->timeout_stop_usec
);
1440 /* The service told us it's stopping, so it's as if we SIGTERM'd it. */
1441 service_set_state(s
, SERVICE_STOP_SIGTERM
);
1444 static void service_enter_stop(Service
*s
, ServiceResult f
) {
1449 if (f
!= SERVICE_SUCCESS
)
1452 service_unwatch_control_pid(s
);
1453 unit_watch_all_pids(UNIT(s
));
1455 s
->control_command
= s
->exec_command
[SERVICE_EXEC_STOP
];
1456 if (s
->control_command
) {
1457 s
->control_command_id
= SERVICE_EXEC_STOP
;
1459 r
= service_spawn(s
,
1461 s
->timeout_stop_usec
,
1463 !s
->permissions_start_only
,
1464 !s
->root_directory_start_only
,
1471 service_set_state(s
, SERVICE_STOP
);
1473 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_SUCCESS
);
1478 log_unit_warning_errno(UNIT(s
)->id
, r
, "%s failed to run 'stop' task: %m", UNIT(s
)->id
);
1479 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
1482 static void service_enter_running(Service
*s
, ServiceResult f
) {
1483 int main_pid_ok
, cgroup_ok
;
1486 if (f
!= SERVICE_SUCCESS
)
1489 main_pid_ok
= main_pid_good(s
);
1490 cgroup_ok
= cgroup_good(s
);
1492 if ((main_pid_ok
> 0 || (main_pid_ok
< 0 && cgroup_ok
!= 0)) &&
1493 (s
->bus_name_good
|| s
->type
!= SERVICE_DBUS
)) {
1495 /* If there are any queued up sd_notify()
1496 * notifications, process them now */
1497 if (s
->notify_state
== NOTIFY_RELOADING
)
1498 service_enter_reload_by_notify(s
);
1499 else if (s
->notify_state
== NOTIFY_STOPPING
)
1500 service_enter_stop_by_notify(s
);
1502 service_set_state(s
, SERVICE_RUNNING
);
1504 } else if (s
->remain_after_exit
)
1505 service_set_state(s
, SERVICE_EXITED
);
1507 service_enter_stop(s
, SERVICE_SUCCESS
);
1510 static void service_enter_start_post(Service
*s
) {
1514 service_unwatch_control_pid(s
);
1515 service_reset_watchdog(s
);
1517 s
->control_command
= s
->exec_command
[SERVICE_EXEC_START_POST
];
1518 if (s
->control_command
) {
1519 s
->control_command_id
= SERVICE_EXEC_START_POST
;
1521 r
= service_spawn(s
,
1523 s
->timeout_start_usec
,
1525 !s
->permissions_start_only
,
1526 !s
->root_directory_start_only
,
1533 service_set_state(s
, SERVICE_START_POST
);
1535 service_enter_running(s
, SERVICE_SUCCESS
);
1540 log_unit_warning_errno(UNIT(s
)->id
, r
, "%s failed to run 'start-post' task: %m", UNIT(s
)->id
);
1541 service_enter_stop(s
, SERVICE_FAILURE_RESOURCES
);
1544 static void service_kill_control_processes(Service
*s
) {
1547 if (!UNIT(s
)->cgroup_path
)
1550 p
= strjoina(UNIT(s
)->cgroup_path
, "/control");
1551 cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER
, p
, SIGKILL
, true, true, true, NULL
);
1554 static void service_enter_start(Service
*s
) {
1561 service_unwatch_control_pid(s
);
1562 service_unwatch_main_pid(s
);
1564 /* We want to ensure that nobody leaks processes from
1565 * START_PRE here, so let's go on a killing spree, People
1566 * should not spawn long running processes from START_PRE. */
1567 service_kill_control_processes(s
);
1569 if (s
->type
== SERVICE_FORKING
) {
1570 s
->control_command_id
= SERVICE_EXEC_START
;
1571 c
= s
->control_command
= s
->exec_command
[SERVICE_EXEC_START
];
1573 s
->main_command
= NULL
;
1575 s
->control_command_id
= _SERVICE_EXEC_COMMAND_INVALID
;
1576 s
->control_command
= NULL
;
1578 c
= s
->main_command
= s
->exec_command
[SERVICE_EXEC_START
];
1582 assert(s
->type
== SERVICE_ONESHOT
);
1583 service_enter_start_post(s
);
1587 r
= service_spawn(s
,
1589 IN_SET(s
->type
, SERVICE_FORKING
, SERVICE_DBUS
, SERVICE_NOTIFY
, SERVICE_ONESHOT
) ? s
->timeout_start_usec
: 0,
1599 if (s
->type
== SERVICE_SIMPLE
|| s
->type
== SERVICE_IDLE
) {
1600 /* For simple services we immediately start
1601 * the START_POST binaries. */
1603 service_set_main_pid(s
, pid
);
1604 service_enter_start_post(s
);
1606 } else if (s
->type
== SERVICE_FORKING
) {
1608 /* For forking services we wait until the start
1609 * process exited. */
1611 s
->control_pid
= pid
;
1612 service_set_state(s
, SERVICE_START
);
1614 } else if (s
->type
== SERVICE_ONESHOT
||
1615 s
->type
== SERVICE_DBUS
||
1616 s
->type
== SERVICE_NOTIFY
) {
1618 /* For oneshot services we wait until the start
1619 * process exited, too, but it is our main process. */
1621 /* For D-Bus services we know the main pid right away,
1622 * but wait for the bus name to appear on the
1623 * bus. Notify services are similar. */
1625 service_set_main_pid(s
, pid
);
1626 service_set_state(s
, SERVICE_START
);
1628 assert_not_reached("Unknown service type");
1633 log_unit_warning_errno(UNIT(s
)->id
, r
, "%s failed to run 'start' task: %m", UNIT(s
)->id
);
1634 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
1637 static void service_enter_start_pre(Service
*s
) {
1642 service_unwatch_control_pid(s
);
1644 s
->control_command
= s
->exec_command
[SERVICE_EXEC_START_PRE
];
1645 if (s
->control_command
) {
1646 /* Before we start anything, let's clear up what might
1647 * be left from previous runs. */
1648 service_kill_control_processes(s
);
1650 s
->control_command_id
= SERVICE_EXEC_START_PRE
;
1652 r
= service_spawn(s
,
1654 s
->timeout_start_usec
,
1656 !s
->permissions_start_only
,
1657 !s
->root_directory_start_only
,
1664 service_set_state(s
, SERVICE_START_PRE
);
1666 service_enter_start(s
);
1671 log_unit_warning_errno(UNIT(s
)->id
, r
, "%s failed to run 'start-pre' task: %m", UNIT(s
)->id
);
1672 service_enter_dead(s
, SERVICE_FAILURE_RESOURCES
, true);
1675 static void service_enter_restart(Service
*s
) {
1676 _cleanup_bus_error_free_ sd_bus_error error
= SD_BUS_ERROR_NULL
;
1681 if (UNIT(s
)->job
&& UNIT(s
)->job
->type
== JOB_STOP
) {
1682 /* Don't restart things if we are going down anyway */
1683 log_unit_info(UNIT(s
)->id
, "Stop job pending for unit, delaying automatic restart.");
1685 r
= service_arm_timer(s
, s
->restart_usec
);
1692 /* Any units that are bound to this service must also be
1693 * restarted. We use JOB_RESTART (instead of the more obvious
1694 * JOB_START) here so that those dependency jobs will be added
1696 r
= manager_add_job(UNIT(s
)->manager
, JOB_RESTART
, UNIT(s
), JOB_FAIL
, false, &error
, NULL
);
1700 /* Note that we stay in the SERVICE_AUTO_RESTART state here,
1701 * it will be canceled as part of the service_stop() call that
1702 * is executed as part of JOB_RESTART. */
1704 log_unit_debug(UNIT(s
)->id
, "%s scheduled restart job.", UNIT(s
)->id
);
1708 log_unit_warning(UNIT(s
)->id
, "%s failed to schedule restart job: %s", UNIT(s
)->id
, bus_error_message(&error
, -r
));
1709 service_enter_dead(s
, SERVICE_FAILURE_RESOURCES
, false);
1712 static void service_enter_reload_by_notify(Service
*s
) {
1715 if (s
->timeout_start_usec
> 0)
1716 service_arm_timer(s
, s
->timeout_start_usec
);
1718 service_set_state(s
, SERVICE_RELOAD
);
1721 static void service_enter_reload(Service
*s
) {
1726 service_unwatch_control_pid(s
);
1728 s
->control_command
= s
->exec_command
[SERVICE_EXEC_RELOAD
];
1729 if (s
->control_command
) {
1730 s
->control_command_id
= SERVICE_EXEC_RELOAD
;
1732 r
= service_spawn(s
,
1734 s
->timeout_start_usec
,
1736 !s
->permissions_start_only
,
1737 !s
->root_directory_start_only
,
1744 service_set_state(s
, SERVICE_RELOAD
);
1746 service_enter_running(s
, SERVICE_SUCCESS
);
1751 log_unit_warning_errno(UNIT(s
)->id
, r
, "%s failed to run 'reload' task: %m", UNIT(s
)->id
);
1752 s
->reload_result
= SERVICE_FAILURE_RESOURCES
;
1753 service_enter_running(s
, SERVICE_SUCCESS
);
1756 static void service_run_next_control(Service
*s
) {
1760 assert(s
->control_command
);
1761 assert(s
->control_command
->command_next
);
1763 assert(s
->control_command_id
!= SERVICE_EXEC_START
);
1765 s
->control_command
= s
->control_command
->command_next
;
1766 service_unwatch_control_pid(s
);
1768 r
= service_spawn(s
,
1770 IN_SET(s
->state
, SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
, SERVICE_RUNNING
, SERVICE_RELOAD
) ? s
->timeout_start_usec
: s
->timeout_stop_usec
,
1772 !s
->permissions_start_only
,
1773 !s
->root_directory_start_only
,
1774 s
->control_command_id
== SERVICE_EXEC_START_PRE
||
1775 s
->control_command_id
== SERVICE_EXEC_STOP_POST
,
1784 log_unit_warning_errno(UNIT(s
)->id
, r
, "%s failed to run next control task: %m", UNIT(s
)->id
);
1786 if (s
->state
== SERVICE_START_PRE
)
1787 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
1788 else if (s
->state
== SERVICE_STOP
)
1789 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
1790 else if (s
->state
== SERVICE_STOP_POST
)
1791 service_enter_dead(s
, SERVICE_FAILURE_RESOURCES
, true);
1792 else if (s
->state
== SERVICE_RELOAD
) {
1793 s
->reload_result
= SERVICE_FAILURE_RESOURCES
;
1794 service_enter_running(s
, SERVICE_SUCCESS
);
1796 service_enter_stop(s
, SERVICE_FAILURE_RESOURCES
);
1799 static void service_run_next_main(Service
*s
) {
1804 assert(s
->main_command
);
1805 assert(s
->main_command
->command_next
);
1806 assert(s
->type
== SERVICE_ONESHOT
);
1808 s
->main_command
= s
->main_command
->command_next
;
1809 service_unwatch_main_pid(s
);
1811 r
= service_spawn(s
,
1813 s
->timeout_start_usec
,
1823 service_set_main_pid(s
, pid
);
1828 log_unit_warning_errno(UNIT(s
)->id
, r
, "%s failed to run next main task: %m", UNIT(s
)->id
);
1829 service_enter_stop(s
, SERVICE_FAILURE_RESOURCES
);
1832 static int service_start_limit_test(Service
*s
) {
1835 if (ratelimit_test(&s
->start_limit
))
1838 log_unit_warning(UNIT(s
)->id
, "start request repeated too quickly for %s", UNIT(s
)->id
);
1840 return failure_action(UNIT(s
)->manager
, s
->start_limit_action
, s
->reboot_arg
);
1843 static int service_start(Unit
*u
) {
1844 Service
*s
= SERVICE(u
);
1849 /* We cannot fulfill this request right now, try again later
1851 if (IN_SET(s
->state
,
1852 SERVICE_STOP
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
1853 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
))
1856 /* Already on it! */
1857 if (IN_SET(s
->state
, SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
))
1860 /* A service that will be restarted must be stopped first to
1861 * trigger BindsTo and/or OnFailure dependencies. If a user
1862 * does not want to wait for the holdoff time to elapse, the
1863 * service should be manually restarted, not started. We
1864 * simply return EAGAIN here, so that any start jobs stay
1865 * queued, and assume that the auto restart timer will
1866 * eventually trigger the restart. */
1867 if (s
->state
== SERVICE_AUTO_RESTART
)
1870 assert(IN_SET(s
->state
, SERVICE_DEAD
, SERVICE_FAILED
));
1872 /* Make sure we don't enter a busy loop of some kind. */
1873 r
= service_start_limit_test(s
);
1875 service_enter_dead(s
, SERVICE_FAILURE_START_LIMIT
, false);
1879 s
->result
= SERVICE_SUCCESS
;
1880 s
->reload_result
= SERVICE_SUCCESS
;
1881 s
->main_pid_known
= false;
1882 s
->main_pid_alien
= false;
1883 s
->forbid_restart
= false;
1884 s
->reset_cpu_usage
= true;
1886 free(s
->status_text
);
1887 s
->status_text
= NULL
;
1888 s
->status_errno
= 0;
1890 s
->notify_state
= NOTIFY_UNKNOWN
;
1892 service_enter_start_pre(s
);
1896 static int service_stop(Unit
*u
) {
1897 Service
*s
= SERVICE(u
);
1901 /* Don't create restart jobs from here. */
1902 s
->forbid_restart
= true;
1905 if (IN_SET(s
->state
,
1906 SERVICE_STOP
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
1907 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
))
1910 /* A restart will be scheduled or is in progress. */
1911 if (s
->state
== SERVICE_AUTO_RESTART
) {
1912 service_set_state(s
, SERVICE_DEAD
);
1916 /* If there's already something running we go directly into
1918 if (IN_SET(s
->state
, SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
, SERVICE_RELOAD
)) {
1919 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_SUCCESS
);
1923 assert(IN_SET(s
->state
, SERVICE_RUNNING
, SERVICE_EXITED
));
1925 service_enter_stop(s
, SERVICE_SUCCESS
);
1929 static int service_reload(Unit
*u
) {
1930 Service
*s
= SERVICE(u
);
1934 assert(s
->state
== SERVICE_RUNNING
|| s
->state
== SERVICE_EXITED
);
1936 service_enter_reload(s
);
1940 _pure_
static bool service_can_reload(Unit
*u
) {
1941 Service
*s
= SERVICE(u
);
1945 return !!s
->exec_command
[SERVICE_EXEC_RELOAD
];
1948 static int service_serialize(Unit
*u
, FILE *f
, FDSet
*fds
) {
1949 Service
*s
= SERVICE(u
);
1956 unit_serialize_item(u
, f
, "state", service_state_to_string(s
->state
));
1957 unit_serialize_item(u
, f
, "result", service_result_to_string(s
->result
));
1958 unit_serialize_item(u
, f
, "reload-result", service_result_to_string(s
->reload_result
));
1960 if (s
->control_pid
> 0)
1961 unit_serialize_item_format(u
, f
, "control-pid", PID_FMT
,
1964 if (s
->main_pid_known
&& s
->main_pid
> 0)
1965 unit_serialize_item_format(u
, f
, "main-pid", PID_FMT
, s
->main_pid
);
1967 unit_serialize_item(u
, f
, "main-pid-known", yes_no(s
->main_pid_known
));
1970 unit_serialize_item(u
, f
, "status-text", s
->status_text
);
1972 /* FIXME: There's a minor uncleanliness here: if there are
1973 * multiple commands attached here, we will start from the
1974 * first one again */
1975 if (s
->control_command_id
>= 0)
1976 unit_serialize_item(u
, f
, "control-command",
1977 service_exec_command_to_string(s
->control_command_id
));
1979 if (s
->socket_fd
>= 0) {
1982 copy
= fdset_put_dup(fds
, s
->socket_fd
);
1986 unit_serialize_item_format(u
, f
, "socket-fd", "%i", copy
);
1989 if (s
->bus_endpoint_fd
>= 0) {
1992 copy
= fdset_put_dup(fds
, s
->bus_endpoint_fd
);
1996 unit_serialize_item_format(u
, f
, "endpoint-fd", "%i", copy
);
1999 LIST_FOREACH(fd_store
, fs
, s
->fd_store
) {
2002 copy
= fdset_put_dup(fds
, fs
->fd
);
2006 unit_serialize_item_format(u
, f
, "fd-store-fd", "%i", copy
);
2009 if (s
->main_exec_status
.pid
> 0) {
2010 unit_serialize_item_format(u
, f
, "main-exec-status-pid", PID_FMT
,
2011 s
->main_exec_status
.pid
);
2012 dual_timestamp_serialize(f
, "main-exec-status-start",
2013 &s
->main_exec_status
.start_timestamp
);
2014 dual_timestamp_serialize(f
, "main-exec-status-exit",
2015 &s
->main_exec_status
.exit_timestamp
);
2017 if (dual_timestamp_is_set(&s
->main_exec_status
.exit_timestamp
)) {
2018 unit_serialize_item_format(u
, f
, "main-exec-status-code", "%i",
2019 s
->main_exec_status
.code
);
2020 unit_serialize_item_format(u
, f
, "main-exec-status-status", "%i",
2021 s
->main_exec_status
.status
);
2024 if (dual_timestamp_is_set(&s
->watchdog_timestamp
))
2025 dual_timestamp_serialize(f
, "watchdog-timestamp", &s
->watchdog_timestamp
);
2027 if (s
->forbid_restart
)
2028 unit_serialize_item(u
, f
, "forbid-restart", yes_no(s
->forbid_restart
));
2033 static int service_deserialize_item(Unit
*u
, const char *key
, const char *value
, FDSet
*fds
) {
2034 Service
*s
= SERVICE(u
);
2042 if (streq(key
, "state")) {
2045 state
= service_state_from_string(value
);
2047 log_unit_debug(u
->id
, "Failed to parse state value %s", value
);
2049 s
->deserialized_state
= state
;
2050 } else if (streq(key
, "result")) {
2053 f
= service_result_from_string(value
);
2055 log_unit_debug(u
->id
, "Failed to parse result value %s", value
);
2056 else if (f
!= SERVICE_SUCCESS
)
2059 } else if (streq(key
, "reload-result")) {
2062 f
= service_result_from_string(value
);
2064 log_unit_debug(u
->id
, "Failed to parse reload result value %s", value
);
2065 else if (f
!= SERVICE_SUCCESS
)
2066 s
->reload_result
= f
;
2068 } else if (streq(key
, "control-pid")) {
2071 if (parse_pid(value
, &pid
) < 0)
2072 log_unit_debug(u
->id
, "Failed to parse control-pid value %s", value
);
2074 s
->control_pid
= pid
;
2075 } else if (streq(key
, "main-pid")) {
2078 if (parse_pid(value
, &pid
) < 0)
2079 log_unit_debug(u
->id
, "Failed to parse main-pid value %s", value
);
2081 service_set_main_pid(s
, pid
);
2082 unit_watch_pid(UNIT(s
), pid
);
2084 } else if (streq(key
, "main-pid-known")) {
2087 b
= parse_boolean(value
);
2089 log_unit_debug(u
->id
, "Failed to parse main-pid-known value %s", value
);
2091 s
->main_pid_known
= b
;
2092 } else if (streq(key
, "status-text")) {
2099 free(s
->status_text
);
2103 } else if (streq(key
, "control-command")) {
2104 ServiceExecCommand id
;
2106 id
= service_exec_command_from_string(value
);
2108 log_unit_debug(u
->id
, "Failed to parse exec-command value %s", value
);
2110 s
->control_command_id
= id
;
2111 s
->control_command
= s
->exec_command
[id
];
2113 } else if (streq(key
, "socket-fd")) {
2116 if (safe_atoi(value
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2117 log_unit_debug(u
->id
, "Failed to parse socket-fd value %s", value
);
2119 asynchronous_close(s
->socket_fd
);
2120 s
->socket_fd
= fdset_remove(fds
, fd
);
2122 } else if (streq(key
, "endpoint-fd")) {
2125 if (safe_atoi(value
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2126 log_unit_debug(u
->id
, "Failed to parse endpoint-fd value %s", value
);
2128 safe_close(s
->bus_endpoint_fd
);
2129 s
->bus_endpoint_fd
= fdset_remove(fds
, fd
);
2131 } else if (streq(key
, "fd-store-fd")) {
2134 if (safe_atoi(value
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2135 log_unit_debug(u
->id
, "Failed to parse fd-store-fd value %s", value
);
2137 r
= service_add_fd_store(s
, fd
);
2139 log_unit_error_errno(u
->id
, r
, "Failed to add fd to store: %m");
2141 fdset_remove(fds
, fd
);
2144 } else if (streq(key
, "main-exec-status-pid")) {
2147 if (parse_pid(value
, &pid
) < 0)
2148 log_unit_debug(u
->id
, "Failed to parse main-exec-status-pid value %s", value
);
2150 s
->main_exec_status
.pid
= pid
;
2151 } else if (streq(key
, "main-exec-status-code")) {
2154 if (safe_atoi(value
, &i
) < 0)
2155 log_unit_debug(u
->id
, "Failed to parse main-exec-status-code value %s", value
);
2157 s
->main_exec_status
.code
= i
;
2158 } else if (streq(key
, "main-exec-status-status")) {
2161 if (safe_atoi(value
, &i
) < 0)
2162 log_unit_debug(u
->id
, "Failed to parse main-exec-status-status value %s", value
);
2164 s
->main_exec_status
.status
= i
;
2165 } else if (streq(key
, "main-exec-status-start"))
2166 dual_timestamp_deserialize(value
, &s
->main_exec_status
.start_timestamp
);
2167 else if (streq(key
, "main-exec-status-exit"))
2168 dual_timestamp_deserialize(value
, &s
->main_exec_status
.exit_timestamp
);
2169 else if (streq(key
, "watchdog-timestamp"))
2170 dual_timestamp_deserialize(value
, &s
->watchdog_timestamp
);
2171 else if (streq(key
, "forbid-restart")) {
2174 b
= parse_boolean(value
);
2176 log_unit_debug(u
->id
, "Failed to parse forbid-restart value %s", value
);
2178 s
->forbid_restart
= b
;
2180 log_unit_debug(u
->id
, "Unknown serialization key '%s'", key
);
2185 _pure_
static UnitActiveState
service_active_state(Unit
*u
) {
2186 const UnitActiveState
*table
;
2190 table
= SERVICE(u
)->type
== SERVICE_IDLE
? state_translation_table_idle
: state_translation_table
;
2192 return table
[SERVICE(u
)->state
];
2195 static const char *service_sub_state_to_string(Unit
*u
) {
2198 return service_state_to_string(SERVICE(u
)->state
);
2201 static bool service_check_gc(Unit
*u
) {
2202 Service
*s
= SERVICE(u
);
2206 /* Never clean up services that still have a process around,
2207 * even if the service is formally dead. */
2208 if (cgroup_good(s
) > 0 ||
2209 main_pid_good(s
) > 0 ||
2210 control_pid_good(s
) > 0)
2216 _pure_
static bool service_check_snapshot(Unit
*u
) {
2217 Service
*s
= SERVICE(u
);
2221 return s
->socket_fd
< 0;
2224 static int service_retry_pid_file(Service
*s
) {
2227 assert(s
->pid_file
);
2228 assert(s
->state
== SERVICE_START
|| s
->state
== SERVICE_START_POST
);
2230 r
= service_load_pid_file(s
, false);
2234 service_unwatch_pid_file(s
);
2236 service_enter_running(s
, SERVICE_SUCCESS
);
2240 static int service_watch_pid_file(Service
*s
) {
2243 log_unit_debug(UNIT(s
)->id
, "Setting watch for %s's PID file %s", UNIT(s
)->id
, s
->pid_file_pathspec
->path
);
2245 r
= path_spec_watch(s
->pid_file_pathspec
, service_dispatch_io
);
2249 /* the pidfile might have appeared just before we set the watch */
2250 log_unit_debug(UNIT(s
)->id
, "Trying to read %s's PID file %s in case it changed", UNIT(s
)->id
, s
->pid_file_pathspec
->path
);
2251 service_retry_pid_file(s
);
2255 log_unit_error_errno(UNIT(s
)->id
, r
, "Failed to set a watch for %s's PID file %s: %m", UNIT(s
)->id
, s
->pid_file_pathspec
->path
);
2256 service_unwatch_pid_file(s
);
2260 static int service_demand_pid_file(Service
*s
) {
2263 assert(s
->pid_file
);
2264 assert(!s
->pid_file_pathspec
);
2266 ps
= new0(PathSpec
, 1);
2271 ps
->path
= strdup(s
->pid_file
);
2277 path_kill_slashes(ps
->path
);
2279 /* PATH_CHANGED would not be enough. There are daemons (sendmail) that
2280 * keep their PID file open all the time. */
2281 ps
->type
= PATH_MODIFIED
;
2282 ps
->inotify_fd
= -1;
2284 s
->pid_file_pathspec
= ps
;
2286 return service_watch_pid_file(s
);
2289 static int service_dispatch_io(sd_event_source
*source
, int fd
, uint32_t events
, void *userdata
) {
2290 PathSpec
*p
= userdata
;
2295 s
= SERVICE(p
->unit
);
2299 assert(s
->state
== SERVICE_START
|| s
->state
== SERVICE_START_POST
);
2300 assert(s
->pid_file_pathspec
);
2301 assert(path_spec_owns_inotify_fd(s
->pid_file_pathspec
, fd
));
2303 log_unit_debug(UNIT(s
)->id
, "inotify event for %s", UNIT(s
)->id
);
2305 if (path_spec_fd_event(p
, events
) < 0)
2308 if (service_retry_pid_file(s
) == 0)
2311 if (service_watch_pid_file(s
) < 0)
2317 service_unwatch_pid_file(s
);
2318 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
2322 static void service_notify_cgroup_empty_event(Unit
*u
) {
2323 Service
*s
= SERVICE(u
);
2327 log_unit_debug(u
->id
, "%s: cgroup is empty", u
->id
);
2331 /* Waiting for SIGCHLD is usually more interesting,
2332 * because it includes return codes/signals. Which is
2333 * why we ignore the cgroup events for most cases,
2334 * except when we don't know pid which to expect the
2338 case SERVICE_START_POST
:
2339 /* If we were hoping for the daemon to write its PID file,
2340 * we can give up now. */
2341 if (s
->pid_file_pathspec
) {
2342 log_unit_warning(u
->id
, "%s never wrote its PID file. Failing.", UNIT(s
)->id
);
2344 service_unwatch_pid_file(s
);
2345 if (s
->state
== SERVICE_START
)
2346 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
2348 service_enter_stop(s
, SERVICE_FAILURE_RESOURCES
);
2352 case SERVICE_RUNNING
:
2353 /* service_enter_running() will figure out what to do */
2354 service_enter_running(s
, SERVICE_SUCCESS
);
2357 case SERVICE_STOP_SIGABRT
:
2358 case SERVICE_STOP_SIGTERM
:
2359 case SERVICE_STOP_SIGKILL
:
2361 if (main_pid_good(s
) <= 0 && !control_pid_good(s
))
2362 service_enter_stop_post(s
, SERVICE_SUCCESS
);
2366 case SERVICE_STOP_POST
:
2367 case SERVICE_FINAL_SIGTERM
:
2368 case SERVICE_FINAL_SIGKILL
:
2369 if (main_pid_good(s
) <= 0 && !control_pid_good(s
))
2370 service_enter_dead(s
, SERVICE_SUCCESS
, true);
2379 static void service_sigchld_event(Unit
*u
, pid_t pid
, int code
, int status
) {
2380 Service
*s
= SERVICE(u
);
2386 if (UNIT(s
)->fragment_path
? is_clean_exit(code
, status
, &s
->success_status
) :
2387 is_clean_exit_lsb(code
, status
, &s
->success_status
))
2388 f
= SERVICE_SUCCESS
;
2389 else if (code
== CLD_EXITED
)
2390 f
= SERVICE_FAILURE_EXIT_CODE
;
2391 else if (code
== CLD_KILLED
)
2392 f
= SERVICE_FAILURE_SIGNAL
;
2393 else if (code
== CLD_DUMPED
)
2394 f
= SERVICE_FAILURE_CORE_DUMP
;
2396 assert_not_reached("Unknown code");
2398 if (s
->main_pid
== pid
) {
2399 /* Forking services may occasionally move to a new PID.
2400 * As long as they update the PID file before exiting the old
2401 * PID, they're fine. */
2402 if (service_load_pid_file(s
, false) == 0)
2406 exec_status_exit(&s
->main_exec_status
, &s
->exec_context
, pid
, code
, status
);
2408 if (s
->main_command
) {
2409 /* If this is not a forking service than the
2410 * main process got started and hence we copy
2411 * the exit status so that it is recorded both
2412 * as main and as control process exit
2415 s
->main_command
->exec_status
= s
->main_exec_status
;
2417 if (s
->main_command
->ignore
)
2418 f
= SERVICE_SUCCESS
;
2419 } else if (s
->exec_command
[SERVICE_EXEC_START
]) {
2421 /* If this is a forked process, then we should
2422 * ignore the return value if this was
2423 * configured for the starter process */
2425 if (s
->exec_command
[SERVICE_EXEC_START
]->ignore
)
2426 f
= SERVICE_SUCCESS
;
2429 log_unit_struct(u
->id
,
2430 f
== SERVICE_SUCCESS
? LOG_DEBUG
: LOG_NOTICE
,
2431 LOG_MESSAGE("%s: main process exited, code=%s, status=%i/%s",
2432 u
->id
, sigchld_code_to_string(code
), status
,
2433 strna(code
== CLD_EXITED
2434 ? exit_status_to_string(status
, EXIT_STATUS_FULL
)
2435 : signal_to_string(status
))),
2436 "EXIT_CODE=%s", sigchld_code_to_string(code
),
2437 "EXIT_STATUS=%i", status
,
2440 if (f
!= SERVICE_SUCCESS
)
2443 if (s
->main_command
&&
2444 s
->main_command
->command_next
&&
2445 f
== SERVICE_SUCCESS
) {
2447 /* There is another command to *
2448 * execute, so let's do that. */
2450 log_unit_debug(u
->id
, "%s running next main command for state %s", u
->id
, service_state_to_string(s
->state
));
2451 service_run_next_main(s
);
2455 /* The service exited, so the service is officially
2457 s
->main_command
= NULL
;
2461 case SERVICE_START_POST
:
2462 case SERVICE_RELOAD
:
2464 /* Need to wait until the operation is
2469 if (s
->type
== SERVICE_ONESHOT
) {
2470 /* This was our main goal, so let's go on */
2471 if (f
== SERVICE_SUCCESS
)
2472 service_enter_start_post(s
);
2474 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, f
);
2480 case SERVICE_RUNNING
:
2481 service_enter_running(s
, f
);
2484 case SERVICE_STOP_SIGABRT
:
2485 case SERVICE_STOP_SIGTERM
:
2486 case SERVICE_STOP_SIGKILL
:
2488 if (!control_pid_good(s
))
2489 service_enter_stop_post(s
, f
);
2491 /* If there is still a control process, wait for that first */
2494 case SERVICE_STOP_POST
:
2495 case SERVICE_FINAL_SIGTERM
:
2496 case SERVICE_FINAL_SIGKILL
:
2498 if (!control_pid_good(s
))
2499 service_enter_dead(s
, f
, true);
2503 assert_not_reached("Uh, main process died at wrong time.");
2507 } else if (s
->control_pid
== pid
) {
2510 if (s
->control_command
) {
2511 exec_status_exit(&s
->control_command
->exec_status
, &s
->exec_context
, pid
, code
, status
);
2513 if (s
->control_command
->ignore
)
2514 f
= SERVICE_SUCCESS
;
2517 log_unit_full(u
->id
,
2518 f
== SERVICE_SUCCESS
? LOG_DEBUG
: LOG_NOTICE
,
2519 "%s: control process exited, code=%s status=%i",
2520 u
->id
, sigchld_code_to_string(code
), status
);
2522 if (f
!= SERVICE_SUCCESS
)
2525 /* Immediately get rid of the cgroup, so that the
2526 * kernel doesn't delay the cgroup empty messages for
2527 * the service cgroup any longer than necessary */
2528 service_kill_control_processes(s
);
2530 if (s
->control_command
&&
2531 s
->control_command
->command_next
&&
2532 f
== SERVICE_SUCCESS
) {
2534 /* There is another command to *
2535 * execute, so let's do that. */
2537 log_unit_debug(u
->id
, "%s running next control command for state %s", u
->id
, service_state_to_string(s
->state
));
2538 service_run_next_control(s
);
2541 /* No further commands for this step, so let's
2542 * figure out what to do next */
2544 s
->control_command
= NULL
;
2545 s
->control_command_id
= _SERVICE_EXEC_COMMAND_INVALID
;
2547 log_unit_debug(u
->id
, "%s got final SIGCHLD for state %s", u
->id
, service_state_to_string(s
->state
));
2551 case SERVICE_START_PRE
:
2552 if (f
== SERVICE_SUCCESS
)
2553 service_enter_start(s
);
2555 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, f
);
2559 if (s
->type
!= SERVICE_FORKING
)
2560 /* Maybe spurious event due to a reload that changed the type? */
2563 if (f
!= SERVICE_SUCCESS
) {
2564 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, f
);
2569 bool has_start_post
;
2572 /* Let's try to load the pid file here if we can.
2573 * The PID file might actually be created by a START_POST
2574 * script. In that case don't worry if the loading fails. */
2576 has_start_post
= !!s
->exec_command
[SERVICE_EXEC_START_POST
];
2577 r
= service_load_pid_file(s
, !has_start_post
);
2578 if (!has_start_post
&& r
< 0) {
2579 r
= service_demand_pid_file(s
);
2580 if (r
< 0 || !cgroup_good(s
))
2581 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
2585 service_search_main_pid(s
);
2587 service_enter_start_post(s
);
2590 case SERVICE_START_POST
:
2591 if (f
!= SERVICE_SUCCESS
) {
2592 service_enter_stop(s
, f
);
2599 r
= service_load_pid_file(s
, true);
2601 r
= service_demand_pid_file(s
);
2602 if (r
< 0 || !cgroup_good(s
))
2603 service_enter_stop(s
, SERVICE_FAILURE_RESOURCES
);
2607 service_search_main_pid(s
);
2609 service_enter_running(s
, SERVICE_SUCCESS
);
2612 case SERVICE_RELOAD
:
2613 if (f
== SERVICE_SUCCESS
) {
2614 service_load_pid_file(s
, true);
2615 service_search_main_pid(s
);
2618 s
->reload_result
= f
;
2619 service_enter_running(s
, SERVICE_SUCCESS
);
2623 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, f
);
2626 case SERVICE_STOP_SIGABRT
:
2627 case SERVICE_STOP_SIGTERM
:
2628 case SERVICE_STOP_SIGKILL
:
2629 if (main_pid_good(s
) <= 0)
2630 service_enter_stop_post(s
, f
);
2632 /* If there is still a service
2633 * process around, wait until
2634 * that one quit, too */
2637 case SERVICE_STOP_POST
:
2638 case SERVICE_FINAL_SIGTERM
:
2639 case SERVICE_FINAL_SIGKILL
:
2640 if (main_pid_good(s
) <= 0)
2641 service_enter_dead(s
, f
, true);
2645 assert_not_reached("Uh, control process died at wrong time.");
2650 /* Notify clients about changed exit status */
2651 unit_add_to_dbus_queue(u
);
2653 /* We got one SIGCHLD for the service, let's watch all
2654 * processes that are now running of the service, and watch
2655 * that. Among the PIDs we then watch will be children
2656 * reassigned to us, which hopefully allows us to identify
2657 * when all children are gone */
2658 unit_tidy_watch_pids(u
, s
->main_pid
, s
->control_pid
);
2659 unit_watch_all_pids(u
);
2661 /* If the PID set is empty now, then let's finish this off */
2662 if (set_isempty(u
->pids
))
2663 service_notify_cgroup_empty_event(u
);
2666 static int service_dispatch_timer(sd_event_source
*source
, usec_t usec
, void *userdata
) {
2667 Service
*s
= SERVICE(userdata
);
2670 assert(source
== s
->timer_event_source
);
2674 case SERVICE_START_PRE
:
2676 log_unit_warning(UNIT(s
)->id
, "%s %s operation timed out. Terminating.", UNIT(s
)->id
, s
->state
== SERVICE_START
? "start" : "start-pre");
2677 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, SERVICE_FAILURE_TIMEOUT
);
2680 case SERVICE_START_POST
:
2681 log_unit_warning(UNIT(s
)->id
, "%s start-post operation timed out. Stopping.", UNIT(s
)->id
);
2682 service_enter_stop(s
, SERVICE_FAILURE_TIMEOUT
);
2685 case SERVICE_RELOAD
:
2686 log_unit_warning(UNIT(s
)->id
, "%s reload operation timed out. Stopping.", UNIT(s
)->id
);
2687 s
->reload_result
= SERVICE_FAILURE_TIMEOUT
;
2688 service_enter_running(s
, SERVICE_SUCCESS
);
2692 log_unit_warning(UNIT(s
)->id
, "%s stopping timed out. Terminating.", UNIT(s
)->id
);
2693 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_TIMEOUT
);
2696 case SERVICE_STOP_SIGABRT
:
2697 log_unit_warning(UNIT(s
)->id
, "%s stop-sigabrt timed out. Terminating.", UNIT(s
)->id
);
2698 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_TIMEOUT
);
2701 case SERVICE_STOP_SIGTERM
:
2702 if (s
->kill_context
.send_sigkill
) {
2703 log_unit_warning(UNIT(s
)->id
, "%s stop-sigterm timed out. Killing.", UNIT(s
)->id
);
2704 service_enter_signal(s
, SERVICE_STOP_SIGKILL
, SERVICE_FAILURE_TIMEOUT
);
2706 log_unit_warning(UNIT(s
)->id
, "%s stop-sigterm timed out. Skipping SIGKILL.", UNIT(s
)->id
);
2707 service_enter_stop_post(s
, SERVICE_FAILURE_TIMEOUT
);
2712 case SERVICE_STOP_SIGKILL
:
2713 /* Uh, we sent a SIGKILL and it is still not gone?
2714 * Must be something we cannot kill, so let's just be
2715 * weirded out and continue */
2717 log_unit_warning(UNIT(s
)->id
, "%s still around after SIGKILL. Ignoring.", UNIT(s
)->id
);
2718 service_enter_stop_post(s
, SERVICE_FAILURE_TIMEOUT
);
2721 case SERVICE_STOP_POST
:
2722 log_unit_warning(UNIT(s
)->id
, "%s stop-post timed out. Terminating.", UNIT(s
)->id
);
2723 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, SERVICE_FAILURE_TIMEOUT
);
2726 case SERVICE_FINAL_SIGTERM
:
2727 if (s
->kill_context
.send_sigkill
) {
2728 log_unit_warning(UNIT(s
)->id
, "%s stop-final-sigterm timed out. Killing.", UNIT(s
)->id
);
2729 service_enter_signal(s
, SERVICE_FINAL_SIGKILL
, SERVICE_FAILURE_TIMEOUT
);
2731 log_unit_warning(UNIT(s
)->id
, "%s stop-final-sigterm timed out. Skipping SIGKILL. Entering failed mode.", UNIT(s
)->id
);
2732 service_enter_dead(s
, SERVICE_FAILURE_TIMEOUT
, false);
2737 case SERVICE_FINAL_SIGKILL
:
2738 log_unit_warning(UNIT(s
)->id
, "%s still around after final SIGKILL. Entering failed mode.", UNIT(s
)->id
);
2739 service_enter_dead(s
, SERVICE_FAILURE_TIMEOUT
, true);
2742 case SERVICE_AUTO_RESTART
:
2743 log_unit_info(UNIT(s
)->id
,
2744 s
->restart_usec
> 0 ?
2745 "%s holdoff time over, scheduling restart." :
2746 "%s has no holdoff time, scheduling restart.",
2748 service_enter_restart(s
);
2752 assert_not_reached("Timeout at wrong time.");
2758 static int service_dispatch_watchdog(sd_event_source
*source
, usec_t usec
, void *userdata
) {
2759 Service
*s
= SERVICE(userdata
);
2760 char t
[FORMAT_TIMESPAN_MAX
];
2763 assert(source
== s
->watchdog_event_source
);
2765 log_unit_error(UNIT(s
)->id
, "%s watchdog timeout (limit %s)!", UNIT(s
)->id
,
2766 format_timespan(t
, sizeof(t
), s
->watchdog_usec
, 1));
2768 service_enter_signal(s
, SERVICE_STOP_SIGABRT
, SERVICE_FAILURE_WATCHDOG
);
2773 static void service_notify_message(Unit
*u
, pid_t pid
, char **tags
, FDSet
*fds
) {
2774 Service
*s
= SERVICE(u
);
2775 _cleanup_free_
char *cc
= NULL
;
2776 bool notify_dbus
= false;
2781 cc
= strv_join(tags
, ", ");
2782 log_unit_debug(u
->id
, "%s: Got notification message from PID "PID_FMT
" (%s)",
2783 u
->id
, pid
, isempty(cc
) ? "n/a" : cc
);
2785 if (s
->notify_access
== NOTIFY_NONE
) {
2786 log_unit_warning(u
->id
, "%s: Got notification message from PID "PID_FMT
", but reception is disabled.", u
->id
, pid
);
2790 if (s
->notify_access
== NOTIFY_MAIN
&& pid
!= s
->main_pid
) {
2791 if (s
->main_pid
!= 0)
2792 log_unit_warning(u
->id
, "%s: Got notification message from PID "PID_FMT
", but reception only permitted for main PID "PID_FMT
, u
->id
, pid
, s
->main_pid
);
2794 log_unit_debug(u
->id
, "%s: Got notification message from PID "PID_FMT
", but reception only permitted for main PID which is currently not known", u
->id
, pid
);
2798 /* Interpret MAINPID= */
2799 e
= strv_find_startswith(tags
, "MAINPID=");
2800 if (e
&& IN_SET(s
->state
, SERVICE_START
, SERVICE_START_POST
, SERVICE_RUNNING
, SERVICE_RELOAD
)) {
2801 if (parse_pid(e
, &pid
) < 0)
2802 log_unit_warning(u
->id
, "Failed to parse MAINPID= field in notification message: %s", e
);
2804 log_unit_debug(u
->id
, "%s: got MAINPID=%s", u
->id
, e
);
2806 service_set_main_pid(s
, pid
);
2807 unit_watch_pid(UNIT(s
), pid
);
2812 /* Interpret RELOADING= */
2813 if (strv_find(tags
, "RELOADING=1")) {
2815 log_unit_debug(u
->id
, "%s: got RELOADING=1", u
->id
);
2816 s
->notify_state
= NOTIFY_RELOADING
;
2818 if (s
->state
== SERVICE_RUNNING
)
2819 service_enter_reload_by_notify(s
);
2824 /* Interpret READY= */
2825 if (strv_find(tags
, "READY=1")) {
2827 log_unit_debug(u
->id
, "%s: got READY=1", u
->id
);
2828 s
->notify_state
= NOTIFY_READY
;
2830 /* Type=notify services inform us about completed
2831 * initialization with READY=1 */
2832 if (s
->type
== SERVICE_NOTIFY
&& s
->state
== SERVICE_START
)
2833 service_enter_start_post(s
);
2835 /* Sending READY=1 while we are reloading informs us
2836 * that the reloading is complete */
2837 if (s
->state
== SERVICE_RELOAD
&& s
->control_pid
== 0)
2838 service_enter_running(s
, SERVICE_SUCCESS
);
2843 /* Interpret STOPPING= */
2844 if (strv_find(tags
, "STOPPING=1")) {
2846 log_unit_debug(u
->id
, "%s: got STOPPING=1", u
->id
);
2847 s
->notify_state
= NOTIFY_STOPPING
;
2849 if (s
->state
== SERVICE_RUNNING
)
2850 service_enter_stop_by_notify(s
);
2855 /* Interpret STATUS= */
2856 e
= strv_find_startswith(tags
, "STATUS=");
2858 _cleanup_free_
char *t
= NULL
;
2861 if (!utf8_is_valid(e
))
2862 log_unit_warning(u
->id
, "Status message in notification is not UTF-8 clean.");
2864 log_unit_debug(u
->id
, "%s: got STATUS=%s", u
->id
, e
);
2872 if (!streq_ptr(s
->status_text
, t
)) {
2874 free(s
->status_text
);
2882 /* Interpret ERRNO= */
2883 e
= strv_find_startswith(tags
, "ERRNO=");
2887 if (safe_atoi(e
, &status_errno
) < 0 || status_errno
< 0)
2888 log_unit_warning(u
->id
, "Failed to parse ERRNO= field in notification message: %s", e
);
2890 log_unit_debug(u
->id
, "%s: got ERRNO=%s", u
->id
, e
);
2892 if (s
->status_errno
!= status_errno
) {
2893 s
->status_errno
= status_errno
;
2899 /* Interpret WATCHDOG= */
2900 if (strv_find(tags
, "WATCHDOG=1")) {
2901 log_unit_debug(u
->id
, "%s: got WATCHDOG=1", u
->id
);
2902 service_reset_watchdog(s
);
2905 /* Add the passed fds to the fd store */
2906 if (strv_find(tags
, "FDSTORE=1")) {
2907 log_unit_debug(u
->id
, "%s: got FDSTORE=1", u
->id
);
2908 service_add_fd_store_set(s
, fds
);
2911 /* Notify clients about changed status or main pid */
2913 unit_add_to_dbus_queue(u
);
2916 static int service_get_timeout(Unit
*u
, uint64_t *timeout
) {
2917 Service
*s
= SERVICE(u
);
2920 if (!s
->timer_event_source
)
2923 r
= sd_event_source_get_time(s
->timer_event_source
, timeout
);
2930 static void service_bus_name_owner_change(
2933 const char *old_owner
,
2934 const char *new_owner
) {
2936 Service
*s
= SERVICE(u
);
2942 assert(streq(s
->bus_name
, name
));
2943 assert(old_owner
|| new_owner
);
2945 if (old_owner
&& new_owner
)
2946 log_unit_debug(u
->id
, "%s's D-Bus name %s changed owner from %s to %s", u
->id
, name
, old_owner
, new_owner
);
2948 log_unit_debug(u
->id
, "%s's D-Bus name %s no longer registered by %s", u
->id
, name
, old_owner
);
2950 log_unit_debug(u
->id
, "%s's D-Bus name %s now registered by %s", u
->id
, name
, new_owner
);
2952 s
->bus_name_good
= !!new_owner
;
2954 if (s
->type
== SERVICE_DBUS
) {
2956 /* service_enter_running() will figure out what to
2958 if (s
->state
== SERVICE_RUNNING
)
2959 service_enter_running(s
, SERVICE_SUCCESS
);
2960 else if (s
->state
== SERVICE_START
&& new_owner
)
2961 service_enter_start_post(s
);
2963 } else if (new_owner
&&
2965 (s
->state
== SERVICE_START
||
2966 s
->state
== SERVICE_START_POST
||
2967 s
->state
== SERVICE_RUNNING
||
2968 s
->state
== SERVICE_RELOAD
)) {
2970 _cleanup_bus_creds_unref_ sd_bus_creds
*creds
= NULL
;
2973 /* Try to acquire PID from bus service */
2975 r
= sd_bus_get_name_creds(u
->manager
->api_bus
, name
, SD_BUS_CREDS_PID
, &creds
);
2977 r
= sd_bus_creds_get_pid(creds
, &pid
);
2979 log_unit_debug(u
->id
, "%s's D-Bus name %s is now owned by process %u", u
->id
, name
, (unsigned) pid
);
2981 service_set_main_pid(s
, pid
);
2982 unit_watch_pid(UNIT(s
), pid
);
2987 int service_set_socket_fd(Service
*s
, int fd
, Socket
*sock
, bool selinux_context_net
) {
2988 _cleanup_free_
char *peer
= NULL
;
2994 /* This is called by the socket code when instantiating a new
2995 * service for a stream socket and the socket needs to be
2998 if (UNIT(s
)->load_state
!= UNIT_LOADED
)
3001 if (s
->socket_fd
>= 0)
3004 if (s
->state
!= SERVICE_DEAD
)
3007 if (getpeername_pretty(fd
, &peer
) >= 0) {
3009 if (UNIT(s
)->description
) {
3010 _cleanup_free_
char *a
;
3012 a
= strjoin(UNIT(s
)->description
, " (", peer
, ")", NULL
);
3016 r
= unit_set_description(UNIT(s
), a
);
3018 r
= unit_set_description(UNIT(s
), peer
);
3025 s
->socket_fd_selinux_context_net
= selinux_context_net
;
3027 unit_ref_set(&s
->accept_socket
, UNIT(sock
));
3029 return unit_add_two_dependencies(UNIT(sock
), UNIT_BEFORE
, UNIT_TRIGGERS
, UNIT(s
), false);
3032 static void service_reset_failed(Unit
*u
) {
3033 Service
*s
= SERVICE(u
);
3037 if (s
->state
== SERVICE_FAILED
)
3038 service_set_state(s
, SERVICE_DEAD
);
3040 s
->result
= SERVICE_SUCCESS
;
3041 s
->reload_result
= SERVICE_SUCCESS
;
3043 RATELIMIT_RESET(s
->start_limit
);
3046 static int service_kill(Unit
*u
, KillWho who
, int signo
, sd_bus_error
*error
) {
3047 Service
*s
= SERVICE(u
);
3049 return unit_kill_common(u
, who
, signo
, s
->main_pid
, s
->control_pid
, error
);
3052 static const char* const service_state_table
[_SERVICE_STATE_MAX
] = {
3053 [SERVICE_DEAD
] = "dead",
3054 [SERVICE_START_PRE
] = "start-pre",
3055 [SERVICE_START
] = "start",
3056 [SERVICE_START_POST
] = "start-post",
3057 [SERVICE_RUNNING
] = "running",
3058 [SERVICE_EXITED
] = "exited",
3059 [SERVICE_RELOAD
] = "reload",
3060 [SERVICE_STOP
] = "stop",
3061 [SERVICE_STOP_SIGABRT
] = "stop-sigabrt",
3062 [SERVICE_STOP_SIGTERM
] = "stop-sigterm",
3063 [SERVICE_STOP_SIGKILL
] = "stop-sigkill",
3064 [SERVICE_STOP_POST
] = "stop-post",
3065 [SERVICE_FINAL_SIGTERM
] = "final-sigterm",
3066 [SERVICE_FINAL_SIGKILL
] = "final-sigkill",
3067 [SERVICE_FAILED
] = "failed",
3068 [SERVICE_AUTO_RESTART
] = "auto-restart",
3071 DEFINE_STRING_TABLE_LOOKUP(service_state
, ServiceState
);
3073 static const char* const service_restart_table
[_SERVICE_RESTART_MAX
] = {
3074 [SERVICE_RESTART_NO
] = "no",
3075 [SERVICE_RESTART_ON_SUCCESS
] = "on-success",
3076 [SERVICE_RESTART_ON_FAILURE
] = "on-failure",
3077 [SERVICE_RESTART_ON_ABNORMAL
] = "on-abnormal",
3078 [SERVICE_RESTART_ON_WATCHDOG
] = "on-watchdog",
3079 [SERVICE_RESTART_ON_ABORT
] = "on-abort",
3080 [SERVICE_RESTART_ALWAYS
] = "always",
3083 DEFINE_STRING_TABLE_LOOKUP(service_restart
, ServiceRestart
);
3085 static const char* const service_type_table
[_SERVICE_TYPE_MAX
] = {
3086 [SERVICE_SIMPLE
] = "simple",
3087 [SERVICE_FORKING
] = "forking",
3088 [SERVICE_ONESHOT
] = "oneshot",
3089 [SERVICE_DBUS
] = "dbus",
3090 [SERVICE_NOTIFY
] = "notify",
3091 [SERVICE_IDLE
] = "idle"
3094 DEFINE_STRING_TABLE_LOOKUP(service_type
, ServiceType
);
3096 static const char* const service_exec_command_table
[_SERVICE_EXEC_COMMAND_MAX
] = {
3097 [SERVICE_EXEC_START_PRE
] = "ExecStartPre",
3098 [SERVICE_EXEC_START
] = "ExecStart",
3099 [SERVICE_EXEC_START_POST
] = "ExecStartPost",
3100 [SERVICE_EXEC_RELOAD
] = "ExecReload",
3101 [SERVICE_EXEC_STOP
] = "ExecStop",
3102 [SERVICE_EXEC_STOP_POST
] = "ExecStopPost",
3105 DEFINE_STRING_TABLE_LOOKUP(service_exec_command
, ServiceExecCommand
);
3107 static const char* const notify_access_table
[_NOTIFY_ACCESS_MAX
] = {
3108 [NOTIFY_NONE
] = "none",
3109 [NOTIFY_MAIN
] = "main",
3110 [NOTIFY_ALL
] = "all"
3113 DEFINE_STRING_TABLE_LOOKUP(notify_access
, NotifyAccess
);
3115 static const char* const notify_state_table
[_NOTIFY_STATE_MAX
] = {
3116 [NOTIFY_UNKNOWN
] = "unknown",
3117 [NOTIFY_READY
] = "ready",
3118 [NOTIFY_RELOADING
] = "reloading",
3119 [NOTIFY_STOPPING
] = "stopping",
3122 DEFINE_STRING_TABLE_LOOKUP(notify_state
, NotifyState
);
3124 static const char* const service_result_table
[_SERVICE_RESULT_MAX
] = {
3125 [SERVICE_SUCCESS
] = "success",
3126 [SERVICE_FAILURE_RESOURCES
] = "resources",
3127 [SERVICE_FAILURE_TIMEOUT
] = "timeout",
3128 [SERVICE_FAILURE_EXIT_CODE
] = "exit-code",
3129 [SERVICE_FAILURE_SIGNAL
] = "signal",
3130 [SERVICE_FAILURE_CORE_DUMP
] = "core-dump",
3131 [SERVICE_FAILURE_WATCHDOG
] = "watchdog",
3132 [SERVICE_FAILURE_START_LIMIT
] = "start-limit"
3135 DEFINE_STRING_TABLE_LOOKUP(service_result
, ServiceResult
);
3137 const UnitVTable service_vtable
= {
3138 .object_size
= sizeof(Service
),
3139 .exec_context_offset
= offsetof(Service
, exec_context
),
3140 .cgroup_context_offset
= offsetof(Service
, cgroup_context
),
3141 .kill_context_offset
= offsetof(Service
, kill_context
),
3142 .exec_runtime_offset
= offsetof(Service
, exec_runtime
),
3148 .private_section
= "Service",
3150 .init
= service_init
,
3151 .done
= service_done
,
3152 .load
= service_load
,
3153 .release_resources
= service_release_resources
,
3155 .coldplug
= service_coldplug
,
3157 .dump
= service_dump
,
3159 .start
= service_start
,
3160 .stop
= service_stop
,
3161 .reload
= service_reload
,
3163 .can_reload
= service_can_reload
,
3165 .kill
= service_kill
,
3167 .serialize
= service_serialize
,
3168 .deserialize_item
= service_deserialize_item
,
3170 .active_state
= service_active_state
,
3171 .sub_state_to_string
= service_sub_state_to_string
,
3173 .check_gc
= service_check_gc
,
3174 .check_snapshot
= service_check_snapshot
,
3176 .sigchld_event
= service_sigchld_event
,
3178 .reset_failed
= service_reset_failed
,
3180 .notify_cgroup_empty
= service_notify_cgroup_empty_event
,
3181 .notify_message
= service_notify_message
,
3183 .bus_name_owner_change
= service_bus_name_owner_change
,
3185 .bus_interface
= "org.freedesktop.systemd1.Service",
3186 .bus_vtable
= bus_service_vtable
,
3187 .bus_set_property
= bus_service_set_property
,
3188 .bus_commit_properties
= bus_service_commit_properties
,
3190 .get_timeout
= service_get_timeout
,
3191 .can_transient
= true,
3193 .status_message_formats
= {
3194 .starting_stopping
= {
3195 [0] = "Starting %s...",
3196 [1] = "Stopping %s...",
3198 .finished_start_job
= {
3199 [JOB_DONE
] = "Started %s.",
3200 [JOB_FAILED
] = "Failed to start %s.",
3201 [JOB_DEPENDENCY
] = "Dependency failed for %s.",
3202 [JOB_TIMEOUT
] = "Timed out starting %s.",
3204 .finished_stop_job
= {
3205 [JOB_DONE
] = "Stopped %s.",
3206 [JOB_FAILED
] = "Stopped (with error) %s.",
3207 [JOB_TIMEOUT
] = "Timed out stopping %s.",