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 exit_status_set_free(&s
->restart_prevent_status
);
326 exit_status_set_free(&s
->restart_force_status
);
327 exit_status_set_free(&s
->success_status
);
329 /* This will leak a process, but at least no memory or any of
331 service_unwatch_main_pid(s
);
332 service_unwatch_control_pid(s
);
333 service_unwatch_pid_file(s
);
336 unit_unwatch_bus_name(u
, s
->bus_name
);
337 s
->bus_name
= mfree(s
->bus_name
);
340 s
->bus_name_owner
= mfree(s
->bus_name_owner
);
342 service_close_socket_fd(s
);
344 unit_ref_unset(&s
->accept_socket
);
346 service_stop_watchdog(s
);
348 s
->timer_event_source
= sd_event_source_unref(s
->timer_event_source
);
350 service_release_resources(u
);
353 static int on_fd_store_io(sd_event_source
*e
, int fd
, uint32_t revents
, void *userdata
) {
354 ServiceFDStore
*fs
= userdata
;
359 /* If we get either EPOLLHUP or EPOLLERR, it's time to remove this entry from the fd store */
360 service_fd_store_unlink(fs
);
364 static int service_add_fd_store(Service
*s
, int fd
, const char *name
) {
371 if (s
->n_fd_store
>= s
->n_fd_store_max
)
374 LIST_FOREACH(fd_store
, fs
, s
->fd_store
) {
375 r
= same_fd(fs
->fd
, fd
);
379 /* Already included */
385 fs
= new0(ServiceFDStore
, 1);
391 fs
->fdname
= strdup(name
?: "stored");
397 r
= sd_event_add_io(UNIT(s
)->manager
->event
, &fs
->event_source
, fd
, 0, on_fd_store_io
, fs
);
404 (void) sd_event_source_set_description(fs
->event_source
, "service-fd-store");
406 LIST_PREPEND(fd_store
, s
->fd_store
, fs
);
412 static int service_add_fd_store_set(Service
*s
, FDSet
*fds
, const char *name
) {
417 if (fdset_size(fds
) <= 0)
420 while (s
->n_fd_store
< s
->n_fd_store_max
) {
421 _cleanup_close_
int fd
= -1;
423 fd
= fdset_steal_first(fds
);
427 r
= service_add_fd_store(s
, fd
, name
);
429 return log_unit_error_errno(UNIT(s
), r
, "Couldn't add fd to fd store: %m");
431 log_unit_debug(UNIT(s
), "Added fd to fd store.");
436 if (fdset_size(fds
) > 0)
437 log_unit_warning(UNIT(s
), "Tried to store more fds than FileDescriptorStoreMax=%u allows, closing remaining.", s
->n_fd_store_max
);
442 static int service_arm_timer(Service
*s
, usec_t usec
) {
447 if (s
->timer_event_source
) {
448 r
= sd_event_source_set_time(s
->timer_event_source
, usec
);
452 return sd_event_source_set_enabled(s
->timer_event_source
, SD_EVENT_ONESHOT
);
455 if (usec
== USEC_INFINITY
)
458 r
= sd_event_add_time(
459 UNIT(s
)->manager
->event
,
460 &s
->timer_event_source
,
463 service_dispatch_timer
, s
);
467 (void) sd_event_source_set_description(s
->timer_event_source
, "service-timer");
472 static int service_verify(Service
*s
) {
475 if (UNIT(s
)->load_state
!= UNIT_LOADED
)
478 if (!s
->exec_command
[SERVICE_EXEC_START
] && !s
->exec_command
[SERVICE_EXEC_STOP
]) {
479 log_unit_error(UNIT(s
), "Service lacks both ExecStart= and ExecStop= setting. Refusing.");
483 if (s
->type
!= SERVICE_ONESHOT
&& !s
->exec_command
[SERVICE_EXEC_START
]) {
484 log_unit_error(UNIT(s
), "Service has no ExecStart= setting, which is only allowed for Type=oneshot services. Refusing.");
488 if (!s
->remain_after_exit
&& !s
->exec_command
[SERVICE_EXEC_START
]) {
489 log_unit_error(UNIT(s
), "Service has no ExecStart= setting, which is only allowed for RemainAfterExit=yes services. Refusing.");
493 if (s
->type
!= SERVICE_ONESHOT
&& s
->exec_command
[SERVICE_EXEC_START
]->command_next
) {
494 log_unit_error(UNIT(s
), "Service has more than one ExecStart= setting, which is only allowed for Type=oneshot services. Refusing.");
498 if (s
->type
== SERVICE_ONESHOT
&& s
->restart
!= SERVICE_RESTART_NO
) {
499 log_unit_error(UNIT(s
), "Service has Restart= setting other than no, which isn't allowed for Type=oneshot services. Refusing.");
503 if (s
->type
== SERVICE_ONESHOT
&& !exit_status_set_is_empty(&s
->restart_force_status
)) {
504 log_unit_error(UNIT(s
), "Service has RestartForceStatus= set, which isn't allowed for Type=oneshot services. Refusing.");
508 if (s
->type
== SERVICE_DBUS
&& !s
->bus_name
) {
509 log_unit_error(UNIT(s
), "Service is of type D-Bus but no D-Bus service name has been specified. Refusing.");
513 if (s
->bus_name
&& s
->type
!= SERVICE_DBUS
)
514 log_unit_warning(UNIT(s
), "Service has a D-Bus service name specified, but is not of type dbus. Ignoring.");
516 if (s
->exec_context
.pam_name
&& !(s
->kill_context
.kill_mode
== KILL_CONTROL_GROUP
|| s
->kill_context
.kill_mode
== KILL_MIXED
)) {
517 log_unit_error(UNIT(s
), "Service has PAM enabled. Kill mode must be set to 'control-group' or 'mixed'. Refusing.");
521 if (s
->usb_function_descriptors
&& !s
->usb_function_strings
)
522 log_unit_warning(UNIT(s
), "Service has USBFunctionDescriptors= setting, but no USBFunctionStrings=. Ignoring.");
524 if (!s
->usb_function_descriptors
&& s
->usb_function_strings
)
525 log_unit_warning(UNIT(s
), "Service has USBFunctionStrings= setting, but no USBFunctionDescriptors=. Ignoring.");
527 if (s
->runtime_max_usec
!= USEC_INFINITY
&& s
->type
== SERVICE_ONESHOT
)
528 log_unit_warning(UNIT(s
), "MaxRuntimeSec= has no effect in combination with Type=oneshot. Ignoring.");
533 static int service_add_default_dependencies(Service
*s
) {
538 if (!UNIT(s
)->default_dependencies
)
541 /* Add a number of automatic dependencies useful for the
542 * majority of services. */
544 if (MANAGER_IS_SYSTEM(UNIT(s
)->manager
)) {
545 /* First, pull in the really early boot stuff, and
546 * require it, so that we fail if we can't acquire
549 r
= unit_add_two_dependencies_by_name(UNIT(s
), UNIT_AFTER
, UNIT_REQUIRES
, SPECIAL_SYSINIT_TARGET
, NULL
, true);
554 /* In the --user instance there's no sysinit.target,
555 * in that case require basic.target instead. */
557 r
= unit_add_dependency_by_name(UNIT(s
), UNIT_REQUIRES
, SPECIAL_BASIC_TARGET
, NULL
, true);
562 /* Second, if the rest of the base system is in the same
563 * transaction, order us after it, but do not pull it in or
564 * even require it. */
565 r
= unit_add_dependency_by_name(UNIT(s
), UNIT_AFTER
, SPECIAL_BASIC_TARGET
, NULL
, true);
569 /* Third, add us in for normal shutdown. */
570 return unit_add_two_dependencies_by_name(UNIT(s
), UNIT_BEFORE
, UNIT_CONFLICTS
, SPECIAL_SHUTDOWN_TARGET
, NULL
, true);
573 static void service_fix_output(Service
*s
) {
576 /* If nothing has been explicitly configured, patch default
577 * output in. If input is socket/tty we avoid this however,
578 * since in that case we want output to default to the same
579 * place as we read input from. */
581 if (s
->exec_context
.std_error
== EXEC_OUTPUT_INHERIT
&&
582 s
->exec_context
.std_output
== EXEC_OUTPUT_INHERIT
&&
583 s
->exec_context
.std_input
== EXEC_INPUT_NULL
)
584 s
->exec_context
.std_error
= UNIT(s
)->manager
->default_std_error
;
586 if (s
->exec_context
.std_output
== EXEC_OUTPUT_INHERIT
&&
587 s
->exec_context
.std_input
== EXEC_INPUT_NULL
)
588 s
->exec_context
.std_output
= UNIT(s
)->manager
->default_std_output
;
591 static int service_setup_bus_name(Service
*s
) {
599 r
= unit_add_dependency_by_name(UNIT(s
), UNIT_REQUIRES
, SPECIAL_DBUS_SOCKET
, NULL
, true);
601 return log_unit_error_errno(UNIT(s
), r
, "Failed to add dependency on " SPECIAL_DBUS_SOCKET
": %m");
603 /* Regardless if kdbus is used or not, we always want to be ordered against dbus.socket if both are in the transaction. */
604 r
= unit_add_dependency_by_name(UNIT(s
), UNIT_AFTER
, SPECIAL_DBUS_SOCKET
, NULL
, true);
606 return log_unit_error_errno(UNIT(s
), r
, "Failed to add dependency on " SPECIAL_DBUS_SOCKET
": %m");
608 r
= unit_watch_bus_name(UNIT(s
), s
->bus_name
);
610 return log_unit_error_errno(UNIT(s
), r
, "Two services allocated for the same bus name %s, refusing operation.", s
->bus_name
);
612 return log_unit_error_errno(UNIT(s
), r
, "Cannot watch bus name %s: %m", s
->bus_name
);
617 static int service_add_extras(Service
*s
) {
622 if (s
->type
== _SERVICE_TYPE_INVALID
) {
623 /* Figure out a type automatically */
625 s
->type
= SERVICE_DBUS
;
626 else if (s
->exec_command
[SERVICE_EXEC_START
])
627 s
->type
= SERVICE_SIMPLE
;
629 s
->type
= SERVICE_ONESHOT
;
632 /* Oneshot services have disabled start timeout by default */
633 if (s
->type
== SERVICE_ONESHOT
&& !s
->start_timeout_defined
)
634 s
->timeout_start_usec
= USEC_INFINITY
;
636 service_fix_output(s
);
638 r
= unit_patch_contexts(UNIT(s
));
642 r
= unit_add_exec_dependencies(UNIT(s
), &s
->exec_context
);
646 r
= unit_set_default_slice(UNIT(s
));
650 if (s
->type
== SERVICE_NOTIFY
&& s
->notify_access
== NOTIFY_NONE
)
651 s
->notify_access
= NOTIFY_MAIN
;
653 if (s
->watchdog_usec
> 0 && s
->notify_access
== NOTIFY_NONE
)
654 s
->notify_access
= NOTIFY_MAIN
;
656 r
= service_add_default_dependencies(s
);
660 r
= service_setup_bus_name(s
);
667 static int service_load(Unit
*u
) {
668 Service
*s
= SERVICE(u
);
673 /* Load a .service file */
674 r
= unit_load_fragment(u
);
678 /* Still nothing found? Then let's give up */
679 if (u
->load_state
== UNIT_STUB
)
682 /* This is a new unit? Then let's add in some extras */
683 if (u
->load_state
== UNIT_LOADED
) {
685 /* We were able to load something, then let's add in
686 * the dropin directories. */
687 r
= unit_load_dropin(u
);
691 /* This is a new unit? Then let's add in some
693 r
= service_add_extras(s
);
698 return service_verify(s
);
701 static void service_dump(Unit
*u
, FILE *f
, const char *prefix
) {
702 ServiceExecCommand c
;
703 Service
*s
= SERVICE(u
);
708 prefix
= strempty(prefix
);
709 prefix2
= strjoina(prefix
, "\t");
712 "%sService State: %s\n"
714 "%sReload Result: %s\n"
715 "%sPermissionsStartOnly: %s\n"
716 "%sRootDirectoryStartOnly: %s\n"
717 "%sRemainAfterExit: %s\n"
718 "%sGuessMainPID: %s\n"
721 "%sNotifyAccess: %s\n"
722 "%sNotifyState: %s\n",
723 prefix
, service_state_to_string(s
->state
),
724 prefix
, service_result_to_string(s
->result
),
725 prefix
, service_result_to_string(s
->reload_result
),
726 prefix
, yes_no(s
->permissions_start_only
),
727 prefix
, yes_no(s
->root_directory_start_only
),
728 prefix
, yes_no(s
->remain_after_exit
),
729 prefix
, yes_no(s
->guess_main_pid
),
730 prefix
, service_type_to_string(s
->type
),
731 prefix
, service_restart_to_string(s
->restart
),
732 prefix
, notify_access_to_string(s
->notify_access
),
733 prefix
, notify_state_to_string(s
->notify_state
));
735 if (s
->control_pid
> 0)
737 "%sControl PID: "PID_FMT
"\n",
738 prefix
, s
->control_pid
);
742 "%sMain PID: "PID_FMT
"\n"
743 "%sMain PID Known: %s\n"
744 "%sMain PID Alien: %s\n",
746 prefix
, yes_no(s
->main_pid_known
),
747 prefix
, yes_no(s
->main_pid_alien
));
752 prefix
, s
->pid_file
);
757 "%sBus Name Good: %s\n",
759 prefix
, yes_no(s
->bus_name_good
));
761 kill_context_dump(&s
->kill_context
, f
, prefix
);
762 exec_context_dump(&s
->exec_context
, f
, prefix
);
764 for (c
= 0; c
< _SERVICE_EXEC_COMMAND_MAX
; c
++) {
766 if (!s
->exec_command
[c
])
769 fprintf(f
, "%s-> %s:\n",
770 prefix
, service_exec_command_to_string(c
));
772 exec_command_dump_list(s
->exec_command
[c
], f
, prefix2
);
776 fprintf(f
, "%sStatus Text: %s\n",
777 prefix
, s
->status_text
);
779 if (s
->n_fd_store_max
> 0)
781 "%sFile Descriptor Store Max: %u\n"
782 "%sFile Descriptor Store Current: %u\n",
783 prefix
, s
->n_fd_store_max
,
784 prefix
, s
->n_fd_store
);
787 static int service_load_pid_file(Service
*s
, bool may_warn
) {
788 _cleanup_free_
char *k
= NULL
;
797 r
= read_one_line_file(s
->pid_file
, &k
);
800 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
));
804 r
= parse_pid(k
, &pid
);
807 log_unit_info_errno(UNIT(s
), r
, "Failed to read PID from file %s: %m", s
->pid_file
);
811 if (!pid_is_alive(pid
)) {
813 log_unit_info(UNIT(s
), "PID "PID_FMT
" read from file %s does not exist or is a zombie.", pid
, s
->pid_file
);
817 if (s
->main_pid_known
) {
818 if (pid
== s
->main_pid
)
821 log_unit_debug(UNIT(s
), "Main PID changing: "PID_FMT
" -> "PID_FMT
, s
->main_pid
, pid
);
823 service_unwatch_main_pid(s
);
824 s
->main_pid_known
= false;
826 log_unit_debug(UNIT(s
), "Main PID loaded: "PID_FMT
, pid
);
828 r
= service_set_main_pid(s
, pid
);
832 r
= unit_watch_pid(UNIT(s
), pid
);
834 /* FIXME: we need to do something here */
835 log_unit_warning_errno(UNIT(s
), r
, "Failed to watch PID "PID_FMT
" for service: %m", pid
);
842 static void service_search_main_pid(Service
*s
) {
848 /* If we know it anyway, don't ever fallback to unreliable
850 if (s
->main_pid_known
)
853 if (!s
->guess_main_pid
)
856 assert(s
->main_pid
<= 0);
858 if (unit_search_main_pid(UNIT(s
), &pid
) < 0)
861 log_unit_debug(UNIT(s
), "Main PID guessed: "PID_FMT
, pid
);
862 if (service_set_main_pid(s
, pid
) < 0)
865 r
= unit_watch_pid(UNIT(s
), pid
);
867 /* FIXME: we need to do something here */
868 log_unit_warning_errno(UNIT(s
), r
, "Failed to watch PID "PID_FMT
" from: %m", pid
);
871 static void service_set_state(Service
*s
, ServiceState state
) {
872 ServiceState old_state
;
873 const UnitActiveState
*table
;
877 table
= s
->type
== SERVICE_IDLE
? state_translation_table_idle
: state_translation_table
;
879 old_state
= s
->state
;
882 service_unwatch_pid_file(s
);
885 SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
,
888 SERVICE_STOP
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
889 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
,
890 SERVICE_AUTO_RESTART
))
891 s
->timer_event_source
= sd_event_source_unref(s
->timer_event_source
);
894 SERVICE_START
, SERVICE_START_POST
,
895 SERVICE_RUNNING
, SERVICE_RELOAD
,
896 SERVICE_STOP
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
897 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
)) {
898 service_unwatch_main_pid(s
);
899 s
->main_command
= NULL
;
903 SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
,
905 SERVICE_STOP
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
906 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
)) {
907 service_unwatch_control_pid(s
);
908 s
->control_command
= NULL
;
909 s
->control_command_id
= _SERVICE_EXEC_COMMAND_INVALID
;
912 if (IN_SET(state
, SERVICE_DEAD
, SERVICE_FAILED
, SERVICE_AUTO_RESTART
))
913 unit_unwatch_all_pids(UNIT(s
));
916 SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
,
917 SERVICE_RUNNING
, SERVICE_RELOAD
,
918 SERVICE_STOP
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
919 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
) &&
920 !(state
== SERVICE_DEAD
&& UNIT(s
)->job
))
921 service_close_socket_fd(s
);
923 if (!IN_SET(state
, SERVICE_START_POST
, SERVICE_RUNNING
, SERVICE_RELOAD
))
924 service_stop_watchdog(s
);
926 /* For the inactive states unit_notify() will trim the cgroup,
927 * but for exit we have to do that ourselves... */
928 if (state
== SERVICE_EXITED
&& !MANAGER_IS_RELOADING(UNIT(s
)->manager
))
929 unit_prune_cgroup(UNIT(s
));
931 /* For remain_after_exit services, let's see if we can "release" the
932 * hold on the console, since unit_notify() only does that in case of
934 if (state
== SERVICE_EXITED
&&
935 s
->remain_after_exit
&&
936 UNIT(s
)->manager
->n_on_console
> 0) {
940 ec
= unit_get_exec_context(UNIT(s
));
941 if (ec
&& exec_context_may_touch_console(ec
)) {
942 Manager
*m
= UNIT(s
)->manager
;
945 if (m
->n_on_console
== 0)
946 /* unset no_console_output flag, since the console is free */
947 m
->no_console_output
= false;
951 if (old_state
!= state
)
952 log_unit_debug(UNIT(s
), "Changed %s -> %s", service_state_to_string(old_state
), service_state_to_string(state
));
954 unit_notify(UNIT(s
), table
[old_state
], table
[state
], s
->reload_result
== SERVICE_SUCCESS
);
957 static usec_t
service_coldplug_timeout(Service
*s
) {
960 switch (s
->deserialized_state
) {
962 case SERVICE_START_PRE
:
964 case SERVICE_START_POST
:
966 return usec_add(UNIT(s
)->state_change_timestamp
.monotonic
, s
->timeout_start_usec
);
968 case SERVICE_RUNNING
:
969 return usec_add(UNIT(s
)->active_enter_timestamp
.monotonic
, s
->runtime_max_usec
);
972 case SERVICE_STOP_SIGABRT
:
973 case SERVICE_STOP_SIGTERM
:
974 case SERVICE_STOP_SIGKILL
:
975 case SERVICE_STOP_POST
:
976 case SERVICE_FINAL_SIGTERM
:
977 case SERVICE_FINAL_SIGKILL
:
978 return usec_add(UNIT(s
)->state_change_timestamp
.monotonic
, s
->timeout_stop_usec
);
980 case SERVICE_AUTO_RESTART
:
981 return usec_add(UNIT(s
)->inactive_enter_timestamp
.monotonic
, s
->restart_usec
);
984 return USEC_INFINITY
;
988 static int service_coldplug(Unit
*u
) {
989 Service
*s
= SERVICE(u
);
993 assert(s
->state
== SERVICE_DEAD
);
995 if (s
->deserialized_state
== s
->state
)
998 r
= service_arm_timer(s
, service_coldplug_timeout(s
));
1002 if (s
->main_pid
> 0 &&
1003 pid_is_unwaited(s
->main_pid
) &&
1004 ((s
->deserialized_state
== SERVICE_START
&& IN_SET(s
->type
, SERVICE_FORKING
, SERVICE_DBUS
, SERVICE_ONESHOT
, SERVICE_NOTIFY
)) ||
1005 IN_SET(s
->deserialized_state
,
1006 SERVICE_START
, SERVICE_START_POST
,
1007 SERVICE_RUNNING
, SERVICE_RELOAD
,
1008 SERVICE_STOP
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
1009 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
))) {
1010 r
= unit_watch_pid(UNIT(s
), s
->main_pid
);
1015 if (s
->control_pid
> 0 &&
1016 pid_is_unwaited(s
->control_pid
) &&
1017 IN_SET(s
->deserialized_state
,
1018 SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
,
1020 SERVICE_STOP
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
1021 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
)) {
1022 r
= unit_watch_pid(UNIT(s
), s
->control_pid
);
1027 if (!IN_SET(s
->deserialized_state
, SERVICE_DEAD
, SERVICE_FAILED
, SERVICE_AUTO_RESTART
))
1028 unit_watch_all_pids(UNIT(s
));
1030 if (IN_SET(s
->deserialized_state
, SERVICE_START_POST
, SERVICE_RUNNING
, SERVICE_RELOAD
))
1031 service_start_watchdog(s
);
1033 service_set_state(s
, s
->deserialized_state
);
1037 static int service_collect_fds(Service
*s
, int **fds
, char ***fd_names
) {
1038 _cleanup_strv_free_
char **rfd_names
= NULL
;
1039 _cleanup_free_
int *rfds
= NULL
;
1046 if (s
->socket_fd
>= 0) {
1048 /* Pass the per-connection socket */
1053 rfds
[0] = s
->socket_fd
;
1055 rfd_names
= strv_new("connection", NULL
);
1064 /* Pass all our configured sockets for singleton services */
1066 SET_FOREACH(u
, UNIT(s
)->dependencies
[UNIT_TRIGGERED_BY
], i
) {
1067 _cleanup_free_
int *cfds
= NULL
;
1071 if (u
->type
!= UNIT_SOCKET
)
1076 cn_fds
= socket_collect_fds(sock
, &cfds
);
1091 t
= realloc(rfds
, (rn_fds
+ cn_fds
) * sizeof(int));
1095 memcpy(t
+ rn_fds
, cfds
, cn_fds
* sizeof(int));
1101 r
= strv_extend_n(&rfd_names
, socket_fdname(sock
), cn_fds
);
1107 if (s
->n_fd_store
> 0) {
1112 t
= realloc(rfds
, (rn_fds
+ s
->n_fd_store
) * sizeof(int));
1118 nl
= realloc(rfd_names
, (rn_fds
+ s
->n_fd_store
+ 1) * sizeof(char*));
1124 LIST_FOREACH(fd_store
, fs
, s
->fd_store
) {
1125 rfds
[rn_fds
] = fs
->fd
;
1126 rfd_names
[rn_fds
] = strdup(strempty(fs
->fdname
));
1127 if (!rfd_names
[rn_fds
])
1133 rfd_names
[rn_fds
] = NULL
;
1137 *fd_names
= rfd_names
;
1145 static int service_spawn(
1150 bool apply_permissions
,
1152 bool apply_tty_stdin
,
1156 _cleanup_strv_free_
char **argv
= NULL
, **final_env
= NULL
, **our_env
= NULL
, **fd_names
= NULL
;
1157 _cleanup_free_
int *fds
= NULL
;
1158 unsigned n_fds
= 0, n_env
= 0;
1162 ExecParameters exec_params
= {
1163 .apply_permissions
= apply_permissions
,
1164 .apply_chroot
= apply_chroot
,
1165 .apply_tty_stdin
= apply_tty_stdin
,
1177 (void) unit_realize_cgroup(UNIT(s
));
1178 if (s
->reset_cpu_usage
) {
1179 (void) unit_reset_cpu_usage(UNIT(s
));
1180 s
->reset_cpu_usage
= false;
1183 r
= unit_setup_exec_runtime(UNIT(s
));
1188 s
->exec_context
.std_input
== EXEC_INPUT_SOCKET
||
1189 s
->exec_context
.std_output
== EXEC_OUTPUT_SOCKET
||
1190 s
->exec_context
.std_error
== EXEC_OUTPUT_SOCKET
) {
1192 r
= service_collect_fds(s
, &fds
, &fd_names
);
1199 r
= service_arm_timer(s
, usec_add(now(CLOCK_MONOTONIC
), timeout
));
1203 r
= unit_full_printf_strv(UNIT(s
), c
->argv
, &argv
);
1207 our_env
= new0(char*, 6);
1211 if (is_control
? s
->notify_access
== NOTIFY_ALL
: s
->notify_access
!= NOTIFY_NONE
)
1212 if (asprintf(our_env
+ n_env
++, "NOTIFY_SOCKET=%s", UNIT(s
)->manager
->notify_socket
) < 0)
1215 if (s
->main_pid
> 0)
1216 if (asprintf(our_env
+ n_env
++, "MAINPID="PID_FMT
, s
->main_pid
) < 0)
1219 if (!MANAGER_IS_SYSTEM(UNIT(s
)->manager
))
1220 if (asprintf(our_env
+ n_env
++, "MANAGERPID="PID_FMT
, getpid()) < 0)
1223 if (s
->socket_fd
>= 0) {
1224 union sockaddr_union sa
;
1225 socklen_t salen
= sizeof(sa
);
1227 r
= getpeername(s
->socket_fd
, &sa
.sa
, &salen
);
1231 if (IN_SET(sa
.sa
.sa_family
, AF_INET
, AF_INET6
)) {
1232 _cleanup_free_
char *addr
= NULL
;
1236 r
= sockaddr_pretty(&sa
.sa
, salen
, true, false, &addr
);
1240 t
= strappend("REMOTE_ADDR=", addr
);
1243 our_env
[n_env
++] = t
;
1245 port
= sockaddr_port(&sa
.sa
);
1249 if (asprintf(&t
, "REMOTE_PORT=%u", port
) < 0)
1251 our_env
[n_env
++] = t
;
1255 final_env
= strv_env_merge(2, UNIT(s
)->manager
->environment
, our_env
, NULL
);
1259 if (is_control
&& UNIT(s
)->cgroup_path
) {
1260 path
= strjoina(UNIT(s
)->cgroup_path
, "/control");
1261 (void) cg_create(SYSTEMD_CGROUP_CONTROLLER
, path
);
1263 path
= UNIT(s
)->cgroup_path
;
1265 exec_params
.argv
= argv
;
1266 exec_params
.fds
= fds
;
1267 exec_params
.fd_names
= fd_names
;
1268 exec_params
.n_fds
= n_fds
;
1269 exec_params
.environment
= final_env
;
1270 exec_params
.confirm_spawn
= UNIT(s
)->manager
->confirm_spawn
;
1271 exec_params
.cgroup_supported
= UNIT(s
)->manager
->cgroup_supported
;
1272 exec_params
.cgroup_path
= path
;
1273 exec_params
.cgroup_delegate
= s
->cgroup_context
.delegate
;
1274 exec_params
.runtime_prefix
= manager_get_runtime_prefix(UNIT(s
)->manager
);
1275 exec_params
.watchdog_usec
= s
->watchdog_usec
;
1276 exec_params
.selinux_context_net
= s
->socket_fd_selinux_context_net
;
1277 if (s
->type
== SERVICE_IDLE
)
1278 exec_params
.idle_pipe
= UNIT(s
)->manager
->idle_pipe
;
1279 exec_params
.stdin_fd
= s
->stdin_fd
;
1280 exec_params
.stdout_fd
= s
->stdout_fd
;
1281 exec_params
.stderr_fd
= s
->stderr_fd
;
1283 r
= exec_spawn(UNIT(s
),
1292 r
= unit_watch_pid(UNIT(s
), pid
);
1294 /* FIXME: we need to do something here */
1302 static int main_pid_good(Service
*s
) {
1305 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1308 /* If we know the pid file, then let's just check if it is
1310 if (s
->main_pid_known
) {
1312 /* If it's an alien child let's check if it is still
1314 if (s
->main_pid_alien
&& s
->main_pid
> 0)
1315 return pid_is_alive(s
->main_pid
);
1317 /* .. otherwise assume we'll get a SIGCHLD for it,
1318 * which we really should wait for to collect exit
1319 * status and code */
1320 return s
->main_pid
> 0;
1323 /* We don't know the pid */
1327 _pure_
static int control_pid_good(Service
*s
) {
1330 return s
->control_pid
> 0;
1333 static int cgroup_good(Service
*s
) {
1338 if (!UNIT(s
)->cgroup_path
)
1341 r
= cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER
, UNIT(s
)->cgroup_path
);
1348 static bool service_shall_restart(Service
*s
) {
1351 /* Don't restart after manual stops */
1352 if (s
->forbid_restart
)
1355 /* Never restart if this is configured as special exception */
1356 if (exit_status_set_test(&s
->restart_prevent_status
, s
->main_exec_status
.code
, s
->main_exec_status
.status
))
1359 /* Restart if the exit code/status are configured as restart triggers */
1360 if (exit_status_set_test(&s
->restart_force_status
, s
->main_exec_status
.code
, s
->main_exec_status
.status
))
1363 switch (s
->restart
) {
1365 case SERVICE_RESTART_NO
:
1368 case SERVICE_RESTART_ALWAYS
:
1371 case SERVICE_RESTART_ON_SUCCESS
:
1372 return s
->result
== SERVICE_SUCCESS
;
1374 case SERVICE_RESTART_ON_FAILURE
:
1375 return s
->result
!= SERVICE_SUCCESS
;
1377 case SERVICE_RESTART_ON_ABNORMAL
:
1378 return !IN_SET(s
->result
, SERVICE_SUCCESS
, SERVICE_FAILURE_EXIT_CODE
);
1380 case SERVICE_RESTART_ON_WATCHDOG
:
1381 return s
->result
== SERVICE_FAILURE_WATCHDOG
;
1383 case SERVICE_RESTART_ON_ABORT
:
1384 return IN_SET(s
->result
, SERVICE_FAILURE_SIGNAL
, SERVICE_FAILURE_CORE_DUMP
);
1387 assert_not_reached("unknown restart setting");
1391 static void service_enter_dead(Service
*s
, ServiceResult f
, bool allow_restart
) {
1395 if (f
!= SERVICE_SUCCESS
)
1398 service_set_state(s
, s
->result
!= SERVICE_SUCCESS
? SERVICE_FAILED
: SERVICE_DEAD
);
1400 if (s
->result
!= SERVICE_SUCCESS
) {
1401 log_unit_warning(UNIT(s
), "Failed with result '%s'.", service_result_to_string(s
->result
));
1402 failure_action(UNIT(s
)->manager
, s
->failure_action
, UNIT(s
)->reboot_arg
);
1405 if (allow_restart
&& service_shall_restart(s
)) {
1407 r
= service_arm_timer(s
, usec_add(now(CLOCK_MONOTONIC
), s
->restart_usec
));
1411 service_set_state(s
, SERVICE_AUTO_RESTART
);
1414 /* The next restart might not be a manual stop, hence reset the flag indicating manual stops */
1415 s
->forbid_restart
= false;
1417 /* We want fresh tmpdirs in case service is started again immediately */
1418 exec_runtime_destroy(s
->exec_runtime
);
1419 s
->exec_runtime
= exec_runtime_unref(s
->exec_runtime
);
1421 /* Also, remove the runtime directory in */
1422 exec_context_destroy_runtime_directory(&s
->exec_context
, manager_get_runtime_prefix(UNIT(s
)->manager
));
1424 /* Try to delete the pid file. At this point it will be
1425 * out-of-date, and some software might be confused by it, so
1426 * let's remove it. */
1428 (void) unlink(s
->pid_file
);
1433 log_unit_warning_errno(UNIT(s
), r
, "Failed to run install restart timer: %m");
1434 service_enter_dead(s
, SERVICE_FAILURE_RESOURCES
, false);
1437 static void service_enter_stop_post(Service
*s
, ServiceResult f
) {
1441 if (f
!= SERVICE_SUCCESS
)
1444 service_unwatch_control_pid(s
);
1445 unit_watch_all_pids(UNIT(s
));
1447 s
->control_command
= s
->exec_command
[SERVICE_EXEC_STOP_POST
];
1448 if (s
->control_command
) {
1449 s
->control_command_id
= SERVICE_EXEC_STOP_POST
;
1451 r
= service_spawn(s
,
1453 s
->timeout_stop_usec
,
1455 !s
->permissions_start_only
,
1456 !s
->root_directory_start_only
,
1463 service_set_state(s
, SERVICE_STOP_POST
);
1465 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, SERVICE_SUCCESS
);
1470 log_unit_warning_errno(UNIT(s
), r
, "Failed to run 'stop-post' task: %m");
1471 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
1474 static int state_to_kill_operation(ServiceState state
) {
1477 case SERVICE_STOP_SIGABRT
:
1480 case SERVICE_STOP_SIGTERM
:
1481 case SERVICE_FINAL_SIGTERM
:
1482 return KILL_TERMINATE
;
1484 case SERVICE_STOP_SIGKILL
:
1485 case SERVICE_FINAL_SIGKILL
:
1489 return _KILL_OPERATION_INVALID
;
1493 static void service_enter_signal(Service
*s
, ServiceState state
, ServiceResult f
) {
1498 if (f
!= SERVICE_SUCCESS
)
1501 unit_watch_all_pids(UNIT(s
));
1503 r
= unit_kill_context(
1506 state_to_kill_operation(state
),
1515 r
= service_arm_timer(s
, usec_add(now(CLOCK_MONOTONIC
), s
->timeout_stop_usec
));
1519 service_set_state(s
, state
);
1520 } else if (IN_SET(state
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
) && s
->kill_context
.send_sigkill
)
1521 service_enter_signal(s
, SERVICE_STOP_SIGKILL
, SERVICE_SUCCESS
);
1522 else if (IN_SET(state
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
))
1523 service_enter_stop_post(s
, SERVICE_SUCCESS
);
1524 else if (state
== SERVICE_FINAL_SIGTERM
&& s
->kill_context
.send_sigkill
)
1525 service_enter_signal(s
, SERVICE_FINAL_SIGKILL
, SERVICE_SUCCESS
);
1527 service_enter_dead(s
, SERVICE_SUCCESS
, true);
1532 log_unit_warning_errno(UNIT(s
), r
, "Failed to kill processes: %m");
1534 if (IN_SET(state
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
))
1535 service_enter_stop_post(s
, SERVICE_FAILURE_RESOURCES
);
1537 service_enter_dead(s
, SERVICE_FAILURE_RESOURCES
, true);
1540 static void service_enter_stop_by_notify(Service
*s
) {
1543 unit_watch_all_pids(UNIT(s
));
1545 service_arm_timer(s
, usec_add(now(CLOCK_MONOTONIC
), s
->timeout_stop_usec
));
1547 /* The service told us it's stopping, so it's as if we SIGTERM'd it. */
1548 service_set_state(s
, SERVICE_STOP_SIGTERM
);
1551 static void service_enter_stop(Service
*s
, ServiceResult f
) {
1556 if (f
!= SERVICE_SUCCESS
)
1559 service_unwatch_control_pid(s
);
1560 unit_watch_all_pids(UNIT(s
));
1562 s
->control_command
= s
->exec_command
[SERVICE_EXEC_STOP
];
1563 if (s
->control_command
) {
1564 s
->control_command_id
= SERVICE_EXEC_STOP
;
1566 r
= service_spawn(s
,
1568 s
->timeout_stop_usec
,
1570 !s
->permissions_start_only
,
1571 !s
->root_directory_start_only
,
1578 service_set_state(s
, SERVICE_STOP
);
1580 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_SUCCESS
);
1585 log_unit_warning_errno(UNIT(s
), r
, "Failed to run 'stop' task: %m");
1586 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
1589 static bool service_good(Service
*s
) {
1593 if (s
->type
== SERVICE_DBUS
&& !s
->bus_name_good
)
1596 main_pid_ok
= main_pid_good(s
);
1597 if (main_pid_ok
> 0) /* It's alive */
1599 if (main_pid_ok
== 0) /* It's dead */
1602 /* OK, we don't know anything about the main PID, maybe
1603 * because there is none. Let's check the control group
1606 return cgroup_good(s
) != 0;
1609 static void service_enter_running(Service
*s
, ServiceResult f
) {
1612 if (f
!= SERVICE_SUCCESS
)
1615 service_unwatch_control_pid(s
);
1617 if (service_good(s
)) {
1619 /* If there are any queued up sd_notify()
1620 * notifications, process them now */
1621 if (s
->notify_state
== NOTIFY_RELOADING
)
1622 service_enter_reload_by_notify(s
);
1623 else if (s
->notify_state
== NOTIFY_STOPPING
)
1624 service_enter_stop_by_notify(s
);
1626 service_set_state(s
, SERVICE_RUNNING
);
1627 service_arm_timer(s
, usec_add(UNIT(s
)->active_enter_timestamp
.monotonic
, s
->runtime_max_usec
));
1630 } else if (s
->remain_after_exit
)
1631 service_set_state(s
, SERVICE_EXITED
);
1633 service_enter_stop(s
, SERVICE_SUCCESS
);
1636 static void service_enter_start_post(Service
*s
) {
1640 service_unwatch_control_pid(s
);
1641 service_reset_watchdog(s
);
1643 s
->control_command
= s
->exec_command
[SERVICE_EXEC_START_POST
];
1644 if (s
->control_command
) {
1645 s
->control_command_id
= SERVICE_EXEC_START_POST
;
1647 r
= service_spawn(s
,
1649 s
->timeout_start_usec
,
1651 !s
->permissions_start_only
,
1652 !s
->root_directory_start_only
,
1659 service_set_state(s
, SERVICE_START_POST
);
1661 service_enter_running(s
, SERVICE_SUCCESS
);
1666 log_unit_warning_errno(UNIT(s
), r
, "Failed to run 'start-post' task: %m");
1667 service_enter_stop(s
, SERVICE_FAILURE_RESOURCES
);
1670 static void service_kill_control_processes(Service
*s
) {
1673 if (!UNIT(s
)->cgroup_path
)
1676 p
= strjoina(UNIT(s
)->cgroup_path
, "/control");
1677 cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER
, p
, SIGKILL
, CGROUP_SIGCONT
|CGROUP_IGNORE_SELF
|CGROUP_REMOVE
, NULL
, NULL
, NULL
);
1680 static void service_enter_start(Service
*s
) {
1688 service_unwatch_control_pid(s
);
1689 service_unwatch_main_pid(s
);
1691 /* We want to ensure that nobody leaks processes from
1692 * START_PRE here, so let's go on a killing spree, People
1693 * should not spawn long running processes from START_PRE. */
1694 service_kill_control_processes(s
);
1696 if (s
->type
== SERVICE_FORKING
) {
1697 s
->control_command_id
= SERVICE_EXEC_START
;
1698 c
= s
->control_command
= s
->exec_command
[SERVICE_EXEC_START
];
1700 s
->main_command
= NULL
;
1702 s
->control_command_id
= _SERVICE_EXEC_COMMAND_INVALID
;
1703 s
->control_command
= NULL
;
1705 c
= s
->main_command
= s
->exec_command
[SERVICE_EXEC_START
];
1709 assert(s
->type
== SERVICE_ONESHOT
);
1710 service_enter_start_post(s
);
1714 if (IN_SET(s
->type
, SERVICE_SIMPLE
, SERVICE_IDLE
))
1715 /* For simple + idle this is the main process. We don't apply any timeout here, but
1716 * service_enter_running() will later apply the .runtime_max_usec timeout. */
1717 timeout
= USEC_INFINITY
;
1719 timeout
= s
->timeout_start_usec
;
1721 r
= service_spawn(s
,
1733 if (IN_SET(s
->type
, SERVICE_SIMPLE
, SERVICE_IDLE
)) {
1734 /* For simple services we immediately start
1735 * the START_POST binaries. */
1737 service_set_main_pid(s
, pid
);
1738 service_enter_start_post(s
);
1740 } else if (s
->type
== SERVICE_FORKING
) {
1742 /* For forking services we wait until the start
1743 * process exited. */
1745 s
->control_pid
= pid
;
1746 service_set_state(s
, SERVICE_START
);
1748 } else if (IN_SET(s
->type
, SERVICE_ONESHOT
, SERVICE_DBUS
, SERVICE_NOTIFY
)) {
1750 /* For oneshot services we wait until the start
1751 * process exited, too, but it is our main process. */
1753 /* For D-Bus services we know the main pid right away,
1754 * but wait for the bus name to appear on the
1755 * bus. Notify services are similar. */
1757 service_set_main_pid(s
, pid
);
1758 service_set_state(s
, SERVICE_START
);
1760 assert_not_reached("Unknown service type");
1765 log_unit_warning_errno(UNIT(s
), r
, "Failed to run 'start' task: %m");
1766 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
1769 static void service_enter_start_pre(Service
*s
) {
1774 service_unwatch_control_pid(s
);
1776 s
->control_command
= s
->exec_command
[SERVICE_EXEC_START_PRE
];
1777 if (s
->control_command
) {
1778 /* Before we start anything, let's clear up what might
1779 * be left from previous runs. */
1780 service_kill_control_processes(s
);
1782 s
->control_command_id
= SERVICE_EXEC_START_PRE
;
1784 r
= service_spawn(s
,
1786 s
->timeout_start_usec
,
1788 !s
->permissions_start_only
,
1789 !s
->root_directory_start_only
,
1796 service_set_state(s
, SERVICE_START_PRE
);
1798 service_enter_start(s
);
1803 log_unit_warning_errno(UNIT(s
), r
, "Failed to run 'start-pre' task: %m");
1804 service_enter_dead(s
, SERVICE_FAILURE_RESOURCES
, true);
1807 static void service_enter_restart(Service
*s
) {
1808 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
1813 if (UNIT(s
)->job
&& UNIT(s
)->job
->type
== JOB_STOP
) {
1814 /* Don't restart things if we are going down anyway */
1815 log_unit_info(UNIT(s
), "Stop job pending for unit, delaying automatic restart.");
1817 r
= service_arm_timer(s
, usec_add(now(CLOCK_MONOTONIC
), s
->restart_usec
));
1824 /* Any units that are bound to this service must also be
1825 * restarted. We use JOB_RESTART (instead of the more obvious
1826 * JOB_START) here so that those dependency jobs will be added
1828 r
= manager_add_job(UNIT(s
)->manager
, JOB_RESTART
, UNIT(s
), JOB_FAIL
, &error
, NULL
);
1832 /* Note that we stay in the SERVICE_AUTO_RESTART state here,
1833 * it will be canceled as part of the service_stop() call that
1834 * is executed as part of JOB_RESTART. */
1836 log_unit_debug(UNIT(s
), "Scheduled restart job.");
1840 log_unit_warning(UNIT(s
), "Failed to schedule restart job: %s", bus_error_message(&error
, -r
));
1841 service_enter_dead(s
, SERVICE_FAILURE_RESOURCES
, false);
1844 static void service_enter_reload_by_notify(Service
*s
) {
1847 service_arm_timer(s
, usec_add(now(CLOCK_MONOTONIC
), s
->timeout_start_usec
));
1848 service_set_state(s
, SERVICE_RELOAD
);
1851 static void service_enter_reload(Service
*s
) {
1856 service_unwatch_control_pid(s
);
1857 s
->reload_result
= SERVICE_SUCCESS
;
1859 s
->control_command
= s
->exec_command
[SERVICE_EXEC_RELOAD
];
1860 if (s
->control_command
) {
1861 s
->control_command_id
= SERVICE_EXEC_RELOAD
;
1863 r
= service_spawn(s
,
1865 s
->timeout_start_usec
,
1867 !s
->permissions_start_only
,
1868 !s
->root_directory_start_only
,
1875 service_set_state(s
, SERVICE_RELOAD
);
1877 service_enter_running(s
, SERVICE_SUCCESS
);
1882 log_unit_warning_errno(UNIT(s
), r
, "Failed to run 'reload' task: %m");
1883 s
->reload_result
= SERVICE_FAILURE_RESOURCES
;
1884 service_enter_running(s
, SERVICE_SUCCESS
);
1887 static void service_run_next_control(Service
*s
) {
1892 assert(s
->control_command
);
1893 assert(s
->control_command
->command_next
);
1895 assert(s
->control_command_id
!= SERVICE_EXEC_START
);
1897 s
->control_command
= s
->control_command
->command_next
;
1898 service_unwatch_control_pid(s
);
1900 if (IN_SET(s
->state
, SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
, SERVICE_RUNNING
, SERVICE_RELOAD
))
1901 timeout
= s
->timeout_start_usec
;
1903 timeout
= s
->timeout_stop_usec
;
1905 r
= service_spawn(s
,
1909 !s
->permissions_start_only
,
1910 !s
->root_directory_start_only
,
1911 s
->control_command_id
== SERVICE_EXEC_START_PRE
||
1912 s
->control_command_id
== SERVICE_EXEC_STOP_POST
,
1921 log_unit_warning_errno(UNIT(s
), r
, "Failed to run next control task: %m");
1923 if (s
->state
== SERVICE_START_PRE
)
1924 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
1925 else if (s
->state
== SERVICE_STOP
)
1926 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
1927 else if (s
->state
== SERVICE_STOP_POST
)
1928 service_enter_dead(s
, SERVICE_FAILURE_RESOURCES
, true);
1929 else if (s
->state
== SERVICE_RELOAD
) {
1930 s
->reload_result
= SERVICE_FAILURE_RESOURCES
;
1931 service_enter_running(s
, SERVICE_SUCCESS
);
1933 service_enter_stop(s
, SERVICE_FAILURE_RESOURCES
);
1936 static void service_run_next_main(Service
*s
) {
1941 assert(s
->main_command
);
1942 assert(s
->main_command
->command_next
);
1943 assert(s
->type
== SERVICE_ONESHOT
);
1945 s
->main_command
= s
->main_command
->command_next
;
1946 service_unwatch_main_pid(s
);
1948 r
= service_spawn(s
,
1950 s
->timeout_start_usec
,
1960 service_set_main_pid(s
, pid
);
1965 log_unit_warning_errno(UNIT(s
), r
, "Failed to run next main task: %m");
1966 service_enter_stop(s
, SERVICE_FAILURE_RESOURCES
);
1969 static int service_start(Unit
*u
) {
1970 Service
*s
= SERVICE(u
);
1975 /* We cannot fulfill this request right now, try again later
1977 if (IN_SET(s
->state
,
1978 SERVICE_STOP
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
1979 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
))
1982 /* Already on it! */
1983 if (IN_SET(s
->state
, SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
))
1986 /* A service that will be restarted must be stopped first to
1987 * trigger BindsTo and/or OnFailure dependencies. If a user
1988 * does not want to wait for the holdoff time to elapse, the
1989 * service should be manually restarted, not started. We
1990 * simply return EAGAIN here, so that any start jobs stay
1991 * queued, and assume that the auto restart timer will
1992 * eventually trigger the restart. */
1993 if (s
->state
== SERVICE_AUTO_RESTART
)
1996 assert(IN_SET(s
->state
, SERVICE_DEAD
, SERVICE_FAILED
));
1998 /* Make sure we don't enter a busy loop of some kind. */
1999 r
= unit_start_limit_test(u
);
2001 service_enter_dead(s
, SERVICE_FAILURE_START_LIMIT_HIT
, false);
2005 s
->result
= SERVICE_SUCCESS
;
2006 s
->reload_result
= SERVICE_SUCCESS
;
2007 s
->main_pid_known
= false;
2008 s
->main_pid_alien
= false;
2009 s
->forbid_restart
= false;
2010 s
->reset_cpu_usage
= true;
2012 s
->status_text
= mfree(s
->status_text
);
2013 s
->status_errno
= 0;
2015 s
->notify_state
= NOTIFY_UNKNOWN
;
2017 s
->watchdog_override_enable
= false;
2018 s
->watchdog_override_usec
= 0;
2020 service_enter_start_pre(s
);
2024 static int service_stop(Unit
*u
) {
2025 Service
*s
= SERVICE(u
);
2029 /* Don't create restart jobs from manual stops. */
2030 s
->forbid_restart
= true;
2033 if (IN_SET(s
->state
,
2034 SERVICE_STOP
, SERVICE_STOP_SIGABRT
, SERVICE_STOP_SIGTERM
, SERVICE_STOP_SIGKILL
, SERVICE_STOP_POST
,
2035 SERVICE_FINAL_SIGTERM
, SERVICE_FINAL_SIGKILL
))
2038 /* A restart will be scheduled or is in progress. */
2039 if (s
->state
== SERVICE_AUTO_RESTART
) {
2040 service_set_state(s
, SERVICE_DEAD
);
2044 /* If there's already something running we go directly into
2046 if (IN_SET(s
->state
, SERVICE_START_PRE
, SERVICE_START
, SERVICE_START_POST
, SERVICE_RELOAD
)) {
2047 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_SUCCESS
);
2051 assert(IN_SET(s
->state
, SERVICE_RUNNING
, SERVICE_EXITED
));
2053 service_enter_stop(s
, SERVICE_SUCCESS
);
2057 static int service_reload(Unit
*u
) {
2058 Service
*s
= SERVICE(u
);
2062 assert(s
->state
== SERVICE_RUNNING
|| s
->state
== SERVICE_EXITED
);
2064 service_enter_reload(s
);
2068 _pure_
static bool service_can_reload(Unit
*u
) {
2069 Service
*s
= SERVICE(u
);
2073 return !!s
->exec_command
[SERVICE_EXEC_RELOAD
];
2076 static int service_serialize(Unit
*u
, FILE *f
, FDSet
*fds
) {
2077 Service
*s
= SERVICE(u
);
2085 unit_serialize_item(u
, f
, "state", service_state_to_string(s
->state
));
2086 unit_serialize_item(u
, f
, "result", service_result_to_string(s
->result
));
2087 unit_serialize_item(u
, f
, "reload-result", service_result_to_string(s
->reload_result
));
2089 if (s
->control_pid
> 0)
2090 unit_serialize_item_format(u
, f
, "control-pid", PID_FMT
, s
->control_pid
);
2092 if (s
->main_pid_known
&& s
->main_pid
> 0)
2093 unit_serialize_item_format(u
, f
, "main-pid", PID_FMT
, s
->main_pid
);
2095 unit_serialize_item(u
, f
, "main-pid-known", yes_no(s
->main_pid_known
));
2096 unit_serialize_item(u
, f
, "bus-name-good", yes_no(s
->bus_name_good
));
2097 unit_serialize_item(u
, f
, "bus-name-owner", s
->bus_name_owner
);
2099 r
= unit_serialize_item_escaped(u
, f
, "status-text", s
->status_text
);
2103 /* FIXME: There's a minor uncleanliness here: if there are
2104 * multiple commands attached here, we will start from the
2105 * first one again */
2106 if (s
->control_command_id
>= 0)
2107 unit_serialize_item(u
, f
, "control-command", service_exec_command_to_string(s
->control_command_id
));
2109 r
= unit_serialize_item_fd(u
, f
, fds
, "stdin-fd", s
->stdin_fd
);
2112 r
= unit_serialize_item_fd(u
, f
, fds
, "stdout-fd", s
->stdout_fd
);
2115 r
= unit_serialize_item_fd(u
, f
, fds
, "stderr-fd", s
->stderr_fd
);
2119 r
= unit_serialize_item_fd(u
, f
, fds
, "socket-fd", s
->socket_fd
);
2123 LIST_FOREACH(fd_store
, fs
, s
->fd_store
) {
2124 _cleanup_free_
char *c
= NULL
;
2127 copy
= fdset_put_dup(fds
, fs
->fd
);
2131 c
= cescape(fs
->fdname
);
2133 unit_serialize_item_format(u
, f
, "fd-store-fd", "%i %s", copy
, strempty(c
));
2136 if (s
->main_exec_status
.pid
> 0) {
2137 unit_serialize_item_format(u
, f
, "main-exec-status-pid", PID_FMT
, s
->main_exec_status
.pid
);
2138 dual_timestamp_serialize(f
, "main-exec-status-start", &s
->main_exec_status
.start_timestamp
);
2139 dual_timestamp_serialize(f
, "main-exec-status-exit", &s
->main_exec_status
.exit_timestamp
);
2141 if (dual_timestamp_is_set(&s
->main_exec_status
.exit_timestamp
)) {
2142 unit_serialize_item_format(u
, f
, "main-exec-status-code", "%i", s
->main_exec_status
.code
);
2143 unit_serialize_item_format(u
, f
, "main-exec-status-status", "%i", s
->main_exec_status
.status
);
2147 dual_timestamp_serialize(f
, "watchdog-timestamp", &s
->watchdog_timestamp
);
2149 unit_serialize_item(u
, f
, "forbid-restart", yes_no(s
->forbid_restart
));
2151 if (s
->watchdog_override_enable
)
2152 unit_serialize_item_format(u
, f
, "watchdog-override-usec", USEC_FMT
, s
->watchdog_override_usec
);
2157 static int service_deserialize_item(Unit
*u
, const char *key
, const char *value
, FDSet
*fds
) {
2158 Service
*s
= SERVICE(u
);
2166 if (streq(key
, "state")) {
2169 state
= service_state_from_string(value
);
2171 log_unit_debug(u
, "Failed to parse state value: %s", value
);
2173 s
->deserialized_state
= state
;
2174 } else if (streq(key
, "result")) {
2177 f
= service_result_from_string(value
);
2179 log_unit_debug(u
, "Failed to parse result value: %s", value
);
2180 else if (f
!= SERVICE_SUCCESS
)
2183 } else if (streq(key
, "reload-result")) {
2186 f
= service_result_from_string(value
);
2188 log_unit_debug(u
, "Failed to parse reload result value: %s", value
);
2189 else if (f
!= SERVICE_SUCCESS
)
2190 s
->reload_result
= f
;
2192 } else if (streq(key
, "control-pid")) {
2195 if (parse_pid(value
, &pid
) < 0)
2196 log_unit_debug(u
, "Failed to parse control-pid value: %s", value
);
2198 s
->control_pid
= pid
;
2199 } else if (streq(key
, "main-pid")) {
2202 if (parse_pid(value
, &pid
) < 0)
2203 log_unit_debug(u
, "Failed to parse main-pid value: %s", value
);
2205 service_set_main_pid(s
, pid
);
2206 unit_watch_pid(UNIT(s
), pid
);
2208 } else if (streq(key
, "main-pid-known")) {
2211 b
= parse_boolean(value
);
2213 log_unit_debug(u
, "Failed to parse main-pid-known value: %s", value
);
2215 s
->main_pid_known
= b
;
2216 } else if (streq(key
, "bus-name-good")) {
2219 b
= parse_boolean(value
);
2221 log_unit_debug(u
, "Failed to parse bus-name-good value: %s", value
);
2223 s
->bus_name_good
= b
;
2224 } else if (streq(key
, "bus-name-owner")) {
2225 r
= free_and_strdup(&s
->bus_name_owner
, value
);
2227 log_unit_error_errno(u
, r
, "Unable to deserialize current bus owner %s: %m", value
);
2228 } else if (streq(key
, "status-text")) {
2231 r
= cunescape(value
, 0, &t
);
2233 log_unit_debug_errno(u
, r
, "Failed to unescape status text: %s", value
);
2235 free(s
->status_text
);
2239 } else if (streq(key
, "control-command")) {
2240 ServiceExecCommand id
;
2242 id
= service_exec_command_from_string(value
);
2244 log_unit_debug(u
, "Failed to parse exec-command value: %s", value
);
2246 s
->control_command_id
= id
;
2247 s
->control_command
= s
->exec_command
[id
];
2249 } else if (streq(key
, "socket-fd")) {
2252 if (safe_atoi(value
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2253 log_unit_debug(u
, "Failed to parse socket-fd value: %s", value
);
2255 asynchronous_close(s
->socket_fd
);
2256 s
->socket_fd
= fdset_remove(fds
, fd
);
2258 } else if (streq(key
, "fd-store-fd")) {
2263 pf
= strcspn(value
, WHITESPACE
);
2264 fdv
= strndupa(value
, pf
);
2266 if (safe_atoi(fdv
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2267 log_unit_debug(u
, "Failed to parse fd-store-fd value: %s", value
);
2269 _cleanup_free_
char *t
= NULL
;
2273 fdn
+= strspn(fdn
, WHITESPACE
);
2274 (void) cunescape(fdn
, 0, &t
);
2276 r
= service_add_fd_store(s
, fd
, t
);
2278 log_unit_error_errno(u
, r
, "Failed to add fd to store: %m");
2280 fdset_remove(fds
, fd
);
2283 } else if (streq(key
, "main-exec-status-pid")) {
2286 if (parse_pid(value
, &pid
) < 0)
2287 log_unit_debug(u
, "Failed to parse main-exec-status-pid value: %s", value
);
2289 s
->main_exec_status
.pid
= pid
;
2290 } else if (streq(key
, "main-exec-status-code")) {
2293 if (safe_atoi(value
, &i
) < 0)
2294 log_unit_debug(u
, "Failed to parse main-exec-status-code value: %s", value
);
2296 s
->main_exec_status
.code
= i
;
2297 } else if (streq(key
, "main-exec-status-status")) {
2300 if (safe_atoi(value
, &i
) < 0)
2301 log_unit_debug(u
, "Failed to parse main-exec-status-status value: %s", value
);
2303 s
->main_exec_status
.status
= i
;
2304 } else if (streq(key
, "main-exec-status-start"))
2305 dual_timestamp_deserialize(value
, &s
->main_exec_status
.start_timestamp
);
2306 else if (streq(key
, "main-exec-status-exit"))
2307 dual_timestamp_deserialize(value
, &s
->main_exec_status
.exit_timestamp
);
2308 else if (streq(key
, "watchdog-timestamp"))
2309 dual_timestamp_deserialize(value
, &s
->watchdog_timestamp
);
2310 else if (streq(key
, "forbid-restart")) {
2313 b
= parse_boolean(value
);
2315 log_unit_debug(u
, "Failed to parse forbid-restart value: %s", value
);
2317 s
->forbid_restart
= b
;
2318 } else if (streq(key
, "stdin-fd")) {
2321 if (safe_atoi(value
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2322 log_unit_debug(u
, "Failed to parse stdin-fd value: %s", value
);
2324 asynchronous_close(s
->stdin_fd
);
2325 s
->stdin_fd
= fdset_remove(fds
, fd
);
2326 s
->exec_context
.stdio_as_fds
= true;
2328 } else if (streq(key
, "stdout-fd")) {
2331 if (safe_atoi(value
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2332 log_unit_debug(u
, "Failed to parse stdout-fd value: %s", value
);
2334 asynchronous_close(s
->stdout_fd
);
2335 s
->stdout_fd
= fdset_remove(fds
, fd
);
2336 s
->exec_context
.stdio_as_fds
= true;
2338 } else if (streq(key
, "stderr-fd")) {
2341 if (safe_atoi(value
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
2342 log_unit_debug(u
, "Failed to parse stderr-fd value: %s", value
);
2344 asynchronous_close(s
->stderr_fd
);
2345 s
->stderr_fd
= fdset_remove(fds
, fd
);
2346 s
->exec_context
.stdio_as_fds
= true;
2348 } else if (streq(key
, "watchdog-override-usec")) {
2349 usec_t watchdog_override_usec
;
2350 if (timestamp_deserialize(value
, &watchdog_override_usec
) < 0)
2351 log_unit_debug(u
, "Failed to parse watchdog_override_usec value: %s", value
);
2353 s
->watchdog_override_enable
= true;
2354 s
->watchdog_override_usec
= watchdog_override_usec
;
2357 log_unit_debug(u
, "Unknown serialization key: %s", key
);
2362 _pure_
static UnitActiveState
service_active_state(Unit
*u
) {
2363 const UnitActiveState
*table
;
2367 table
= SERVICE(u
)->type
== SERVICE_IDLE
? state_translation_table_idle
: state_translation_table
;
2369 return table
[SERVICE(u
)->state
];
2372 static const char *service_sub_state_to_string(Unit
*u
) {
2375 return service_state_to_string(SERVICE(u
)->state
);
2378 static bool service_check_gc(Unit
*u
) {
2379 Service
*s
= SERVICE(u
);
2383 /* Never clean up services that still have a process around,
2384 * even if the service is formally dead. */
2385 if (cgroup_good(s
) > 0 ||
2386 main_pid_good(s
) > 0 ||
2387 control_pid_good(s
) > 0)
2393 static int service_retry_pid_file(Service
*s
) {
2396 assert(s
->pid_file
);
2397 assert(s
->state
== SERVICE_START
|| s
->state
== SERVICE_START_POST
);
2399 r
= service_load_pid_file(s
, false);
2403 service_unwatch_pid_file(s
);
2405 service_enter_running(s
, SERVICE_SUCCESS
);
2409 static int service_watch_pid_file(Service
*s
) {
2412 log_unit_debug(UNIT(s
), "Setting watch for PID file %s", s
->pid_file_pathspec
->path
);
2414 r
= path_spec_watch(s
->pid_file_pathspec
, service_dispatch_io
);
2418 /* the pidfile might have appeared just before we set the watch */
2419 log_unit_debug(UNIT(s
), "Trying to read PID file %s in case it changed", s
->pid_file_pathspec
->path
);
2420 service_retry_pid_file(s
);
2424 log_unit_error_errno(UNIT(s
), r
, "Failed to set a watch for PID file %s: %m", s
->pid_file_pathspec
->path
);
2425 service_unwatch_pid_file(s
);
2429 static int service_demand_pid_file(Service
*s
) {
2432 assert(s
->pid_file
);
2433 assert(!s
->pid_file_pathspec
);
2435 ps
= new0(PathSpec
, 1);
2440 ps
->path
= strdup(s
->pid_file
);
2446 path_kill_slashes(ps
->path
);
2448 /* PATH_CHANGED would not be enough. There are daemons (sendmail) that
2449 * keep their PID file open all the time. */
2450 ps
->type
= PATH_MODIFIED
;
2451 ps
->inotify_fd
= -1;
2453 s
->pid_file_pathspec
= ps
;
2455 return service_watch_pid_file(s
);
2458 static int service_dispatch_io(sd_event_source
*source
, int fd
, uint32_t events
, void *userdata
) {
2459 PathSpec
*p
= userdata
;
2464 s
= SERVICE(p
->unit
);
2468 assert(s
->state
== SERVICE_START
|| s
->state
== SERVICE_START_POST
);
2469 assert(s
->pid_file_pathspec
);
2470 assert(path_spec_owns_inotify_fd(s
->pid_file_pathspec
, fd
));
2472 log_unit_debug(UNIT(s
), "inotify event");
2474 if (path_spec_fd_event(p
, events
) < 0)
2477 if (service_retry_pid_file(s
) == 0)
2480 if (service_watch_pid_file(s
) < 0)
2486 service_unwatch_pid_file(s
);
2487 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
2491 static void service_notify_cgroup_empty_event(Unit
*u
) {
2492 Service
*s
= SERVICE(u
);
2496 log_unit_debug(u
, "cgroup is empty");
2500 /* Waiting for SIGCHLD is usually more interesting,
2501 * because it includes return codes/signals. Which is
2502 * why we ignore the cgroup events for most cases,
2503 * except when we don't know pid which to expect the
2507 case SERVICE_START_POST
:
2508 /* If we were hoping for the daemon to write its PID file,
2509 * we can give up now. */
2510 if (s
->pid_file_pathspec
) {
2511 log_unit_warning(u
, "Daemon never wrote its PID file. Failing.");
2513 service_unwatch_pid_file(s
);
2514 if (s
->state
== SERVICE_START
)
2515 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
2517 service_enter_stop(s
, SERVICE_FAILURE_RESOURCES
);
2521 case SERVICE_RUNNING
:
2522 /* service_enter_running() will figure out what to do */
2523 service_enter_running(s
, SERVICE_SUCCESS
);
2526 case SERVICE_STOP_SIGABRT
:
2527 case SERVICE_STOP_SIGTERM
:
2528 case SERVICE_STOP_SIGKILL
:
2530 if (main_pid_good(s
) <= 0 && !control_pid_good(s
))
2531 service_enter_stop_post(s
, SERVICE_SUCCESS
);
2535 case SERVICE_STOP_POST
:
2536 case SERVICE_FINAL_SIGTERM
:
2537 case SERVICE_FINAL_SIGKILL
:
2538 if (main_pid_good(s
) <= 0 && !control_pid_good(s
))
2539 service_enter_dead(s
, SERVICE_SUCCESS
, true);
2548 static void service_sigchld_event(Unit
*u
, pid_t pid
, int code
, int status
) {
2549 Service
*s
= SERVICE(u
);
2555 if (UNIT(s
)->fragment_path
? is_clean_exit(code
, status
, &s
->success_status
) :
2556 is_clean_exit_lsb(code
, status
, &s
->success_status
))
2557 f
= SERVICE_SUCCESS
;
2558 else if (code
== CLD_EXITED
)
2559 f
= SERVICE_FAILURE_EXIT_CODE
;
2560 else if (code
== CLD_KILLED
)
2561 f
= SERVICE_FAILURE_SIGNAL
;
2562 else if (code
== CLD_DUMPED
)
2563 f
= SERVICE_FAILURE_CORE_DUMP
;
2565 assert_not_reached("Unknown code");
2567 if (s
->main_pid
== pid
) {
2568 /* Forking services may occasionally move to a new PID.
2569 * As long as they update the PID file before exiting the old
2570 * PID, they're fine. */
2571 if (service_load_pid_file(s
, false) == 0)
2575 exec_status_exit(&s
->main_exec_status
, &s
->exec_context
, pid
, code
, status
);
2577 if (s
->main_command
) {
2578 /* If this is not a forking service than the
2579 * main process got started and hence we copy
2580 * the exit status so that it is recorded both
2581 * as main and as control process exit
2584 s
->main_command
->exec_status
= s
->main_exec_status
;
2586 if (s
->main_command
->ignore
)
2587 f
= SERVICE_SUCCESS
;
2588 } else if (s
->exec_command
[SERVICE_EXEC_START
]) {
2590 /* If this is a forked process, then we should
2591 * ignore the return value if this was
2592 * configured for the starter process */
2594 if (s
->exec_command
[SERVICE_EXEC_START
]->ignore
)
2595 f
= SERVICE_SUCCESS
;
2598 log_struct(f
== SERVICE_SUCCESS
? LOG_DEBUG
: LOG_NOTICE
,
2600 LOG_UNIT_MESSAGE(u
, "Main process exited, code=%s, status=%i/%s",
2601 sigchld_code_to_string(code
), status
,
2602 strna(code
== CLD_EXITED
2603 ? exit_status_to_string(status
, EXIT_STATUS_FULL
)
2604 : signal_to_string(status
))),
2605 "EXIT_CODE=%s", sigchld_code_to_string(code
),
2606 "EXIT_STATUS=%i", status
,
2609 if (f
!= SERVICE_SUCCESS
)
2612 if (s
->main_command
&&
2613 s
->main_command
->command_next
&&
2614 f
== SERVICE_SUCCESS
) {
2616 /* There is another command to *
2617 * execute, so let's do that. */
2619 log_unit_debug(u
, "Running next main command for state %s.", service_state_to_string(s
->state
));
2620 service_run_next_main(s
);
2624 /* The service exited, so the service is officially
2626 s
->main_command
= NULL
;
2630 case SERVICE_START_POST
:
2631 case SERVICE_RELOAD
:
2633 /* Need to wait until the operation is
2638 if (s
->type
== SERVICE_ONESHOT
) {
2639 /* This was our main goal, so let's go on */
2640 if (f
== SERVICE_SUCCESS
)
2641 service_enter_start_post(s
);
2643 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, f
);
2649 case SERVICE_RUNNING
:
2650 service_enter_running(s
, f
);
2653 case SERVICE_STOP_SIGABRT
:
2654 case SERVICE_STOP_SIGTERM
:
2655 case SERVICE_STOP_SIGKILL
:
2657 if (!control_pid_good(s
))
2658 service_enter_stop_post(s
, f
);
2660 /* If there is still a control process, wait for that first */
2663 case SERVICE_STOP_POST
:
2664 case SERVICE_FINAL_SIGTERM
:
2665 case SERVICE_FINAL_SIGKILL
:
2667 if (!control_pid_good(s
))
2668 service_enter_dead(s
, f
, true);
2672 assert_not_reached("Uh, main process died at wrong time.");
2676 } else if (s
->control_pid
== pid
) {
2679 if (s
->control_command
) {
2680 exec_status_exit(&s
->control_command
->exec_status
, &s
->exec_context
, pid
, code
, status
);
2682 if (s
->control_command
->ignore
)
2683 f
= SERVICE_SUCCESS
;
2686 log_unit_full(u
, f
== SERVICE_SUCCESS
? LOG_DEBUG
: LOG_NOTICE
, 0,
2687 "Control process exited, code=%s status=%i",
2688 sigchld_code_to_string(code
), status
);
2690 if (f
!= SERVICE_SUCCESS
)
2693 /* Immediately get rid of the cgroup, so that the
2694 * kernel doesn't delay the cgroup empty messages for
2695 * the service cgroup any longer than necessary */
2696 service_kill_control_processes(s
);
2698 if (s
->control_command
&&
2699 s
->control_command
->command_next
&&
2700 f
== SERVICE_SUCCESS
) {
2702 /* There is another command to *
2703 * execute, so let's do that. */
2705 log_unit_debug(u
, "Running next control command for state %s.", service_state_to_string(s
->state
));
2706 service_run_next_control(s
);
2709 /* No further commands for this step, so let's
2710 * figure out what to do next */
2712 s
->control_command
= NULL
;
2713 s
->control_command_id
= _SERVICE_EXEC_COMMAND_INVALID
;
2715 log_unit_debug(u
, "Got final SIGCHLD for state %s.", service_state_to_string(s
->state
));
2719 case SERVICE_START_PRE
:
2720 if (f
== SERVICE_SUCCESS
)
2721 service_enter_start(s
);
2723 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, f
);
2727 if (s
->type
!= SERVICE_FORKING
)
2728 /* Maybe spurious event due to a reload that changed the type? */
2731 if (f
!= SERVICE_SUCCESS
) {
2732 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, f
);
2737 bool has_start_post
;
2740 /* Let's try to load the pid file here if we can.
2741 * The PID file might actually be created by a START_POST
2742 * script. In that case don't worry if the loading fails. */
2744 has_start_post
= !!s
->exec_command
[SERVICE_EXEC_START_POST
];
2745 r
= service_load_pid_file(s
, !has_start_post
);
2746 if (!has_start_post
&& r
< 0) {
2747 r
= service_demand_pid_file(s
);
2748 if (r
< 0 || !cgroup_good(s
))
2749 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, SERVICE_FAILURE_RESOURCES
);
2753 service_search_main_pid(s
);
2755 service_enter_start_post(s
);
2758 case SERVICE_START_POST
:
2759 if (f
!= SERVICE_SUCCESS
) {
2760 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, f
);
2767 r
= service_load_pid_file(s
, true);
2769 r
= service_demand_pid_file(s
);
2770 if (r
< 0 || !cgroup_good(s
))
2771 service_enter_stop(s
, SERVICE_FAILURE_RESOURCES
);
2775 service_search_main_pid(s
);
2777 service_enter_running(s
, SERVICE_SUCCESS
);
2780 case SERVICE_RELOAD
:
2781 if (f
== SERVICE_SUCCESS
)
2782 if (service_load_pid_file(s
, true) < 0)
2783 service_search_main_pid(s
);
2785 s
->reload_result
= f
;
2786 service_enter_running(s
, SERVICE_SUCCESS
);
2790 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, f
);
2793 case SERVICE_STOP_SIGABRT
:
2794 case SERVICE_STOP_SIGTERM
:
2795 case SERVICE_STOP_SIGKILL
:
2796 if (main_pid_good(s
) <= 0)
2797 service_enter_stop_post(s
, f
);
2799 /* If there is still a service
2800 * process around, wait until
2801 * that one quit, too */
2804 case SERVICE_STOP_POST
:
2805 case SERVICE_FINAL_SIGTERM
:
2806 case SERVICE_FINAL_SIGKILL
:
2807 if (main_pid_good(s
) <= 0)
2808 service_enter_dead(s
, f
, true);
2812 assert_not_reached("Uh, control process died at wrong time.");
2817 /* Notify clients about changed exit status */
2818 unit_add_to_dbus_queue(u
);
2820 /* We got one SIGCHLD for the service, let's watch all
2821 * processes that are now running of the service, and watch
2822 * that. Among the PIDs we then watch will be children
2823 * reassigned to us, which hopefully allows us to identify
2824 * when all children are gone */
2825 unit_tidy_watch_pids(u
, s
->main_pid
, s
->control_pid
);
2826 unit_watch_all_pids(u
);
2828 /* If the PID set is empty now, then let's finish this off
2829 (On unified we use proper notifications) */
2830 if (cg_unified() <= 0 && set_isempty(u
->pids
))
2831 service_notify_cgroup_empty_event(u
);
2834 static int service_dispatch_timer(sd_event_source
*source
, usec_t usec
, void *userdata
) {
2835 Service
*s
= SERVICE(userdata
);
2838 assert(source
== s
->timer_event_source
);
2842 case SERVICE_START_PRE
:
2844 log_unit_warning(UNIT(s
), "%s operation timed out. Terminating.", s
->state
== SERVICE_START
? "Start" : "Start-pre");
2845 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, SERVICE_FAILURE_TIMEOUT
);
2848 case SERVICE_START_POST
:
2849 log_unit_warning(UNIT(s
), "Start-post operation timed out. Stopping.");
2850 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_TIMEOUT
);
2853 case SERVICE_RUNNING
:
2854 log_unit_warning(UNIT(s
), "Service reached runtime time limit. Stopping.");
2855 service_enter_stop(s
, SERVICE_FAILURE_TIMEOUT
);
2858 case SERVICE_RELOAD
:
2859 log_unit_warning(UNIT(s
), "Reload operation timed out. Killing reload process.");
2860 service_kill_control_processes(s
);
2861 s
->reload_result
= SERVICE_FAILURE_TIMEOUT
;
2862 service_enter_running(s
, SERVICE_SUCCESS
);
2866 log_unit_warning(UNIT(s
), "Stopping timed out. Terminating.");
2867 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_TIMEOUT
);
2870 case SERVICE_STOP_SIGABRT
:
2871 log_unit_warning(UNIT(s
), "State 'stop-sigabrt' timed out. Terminating.");
2872 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, SERVICE_FAILURE_TIMEOUT
);
2875 case SERVICE_STOP_SIGTERM
:
2876 if (s
->kill_context
.send_sigkill
) {
2877 log_unit_warning(UNIT(s
), "State 'stop-sigterm' timed out. Killing.");
2878 service_enter_signal(s
, SERVICE_STOP_SIGKILL
, SERVICE_FAILURE_TIMEOUT
);
2880 log_unit_warning(UNIT(s
), "State 'stop-sigterm' timed out. Skipping SIGKILL.");
2881 service_enter_stop_post(s
, SERVICE_FAILURE_TIMEOUT
);
2886 case SERVICE_STOP_SIGKILL
:
2887 /* Uh, we sent a SIGKILL and it is still not gone?
2888 * Must be something we cannot kill, so let's just be
2889 * weirded out and continue */
2891 log_unit_warning(UNIT(s
), "Processes still around after SIGKILL. Ignoring.");
2892 service_enter_stop_post(s
, SERVICE_FAILURE_TIMEOUT
);
2895 case SERVICE_STOP_POST
:
2896 log_unit_warning(UNIT(s
), "State 'stop-post' timed out. Terminating.");
2897 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, SERVICE_FAILURE_TIMEOUT
);
2900 case SERVICE_FINAL_SIGTERM
:
2901 if (s
->kill_context
.send_sigkill
) {
2902 log_unit_warning(UNIT(s
), "State 'stop-final-sigterm' timed out. Killing.");
2903 service_enter_signal(s
, SERVICE_FINAL_SIGKILL
, SERVICE_FAILURE_TIMEOUT
);
2905 log_unit_warning(UNIT(s
), "State 'stop-final-sigterm' timed out. Skipping SIGKILL. Entering failed mode.");
2906 service_enter_dead(s
, SERVICE_FAILURE_TIMEOUT
, false);
2911 case SERVICE_FINAL_SIGKILL
:
2912 log_unit_warning(UNIT(s
), "Processes still around after final SIGKILL. Entering failed mode.");
2913 service_enter_dead(s
, SERVICE_FAILURE_TIMEOUT
, true);
2916 case SERVICE_AUTO_RESTART
:
2917 log_unit_info(UNIT(s
),
2918 s
->restart_usec
> 0 ?
2919 "Service hold-off time over, scheduling restart." :
2920 "Service has no hold-off time, scheduling restart.");
2921 service_enter_restart(s
);
2925 assert_not_reached("Timeout at wrong time.");
2931 static int service_dispatch_watchdog(sd_event_source
*source
, usec_t usec
, void *userdata
) {
2932 Service
*s
= SERVICE(userdata
);
2933 char t
[FORMAT_TIMESPAN_MAX
];
2934 usec_t watchdog_usec
;
2937 assert(source
== s
->watchdog_event_source
);
2939 watchdog_usec
= service_get_watchdog_usec(s
);
2941 log_unit_error(UNIT(s
), "Watchdog timeout (limit %s)!",
2942 format_timespan(t
, sizeof(t
), watchdog_usec
, 1));
2944 service_enter_signal(s
, SERVICE_STOP_SIGABRT
, SERVICE_FAILURE_WATCHDOG
);
2949 static void service_notify_message(Unit
*u
, pid_t pid
, char **tags
, FDSet
*fds
) {
2950 Service
*s
= SERVICE(u
);
2951 _cleanup_free_
char *cc
= NULL
;
2952 bool notify_dbus
= false;
2957 cc
= strv_join(tags
, ", ");
2959 if (s
->notify_access
== NOTIFY_NONE
) {
2960 log_unit_warning(u
, "Got notification message from PID "PID_FMT
", but reception is disabled.", pid
);
2962 } else if (s
->notify_access
== NOTIFY_MAIN
&& pid
!= s
->main_pid
) {
2963 if (s
->main_pid
!= 0)
2964 log_unit_warning(u
, "Got notification message from PID "PID_FMT
", but reception only permitted for main PID "PID_FMT
, pid
, s
->main_pid
);
2966 log_unit_debug(u
, "Got notification message from PID "PID_FMT
", but reception only permitted for main PID which is currently not known", pid
);
2969 log_unit_debug(u
, "Got notification message from PID "PID_FMT
" (%s)", pid
, isempty(cc
) ? "n/a" : cc
);
2971 /* Interpret MAINPID= */
2972 e
= strv_find_startswith(tags
, "MAINPID=");
2973 if (e
&& IN_SET(s
->state
, SERVICE_START
, SERVICE_START_POST
, SERVICE_RUNNING
, SERVICE_RELOAD
)) {
2974 if (parse_pid(e
, &pid
) < 0)
2975 log_unit_warning(u
, "Failed to parse MAINPID= field in notification message: %s", e
);
2977 service_set_main_pid(s
, pid
);
2978 unit_watch_pid(UNIT(s
), pid
);
2983 /* Interpret RELOADING= */
2984 if (strv_find(tags
, "RELOADING=1")) {
2986 s
->notify_state
= NOTIFY_RELOADING
;
2988 if (s
->state
== SERVICE_RUNNING
)
2989 service_enter_reload_by_notify(s
);
2994 /* Interpret READY= */
2995 if (strv_find(tags
, "READY=1")) {
2997 s
->notify_state
= NOTIFY_READY
;
2999 /* Type=notify services inform us about completed
3000 * initialization with READY=1 */
3001 if (s
->type
== SERVICE_NOTIFY
&& s
->state
== SERVICE_START
)
3002 service_enter_start_post(s
);
3004 /* Sending READY=1 while we are reloading informs us
3005 * that the reloading is complete */
3006 if (s
->state
== SERVICE_RELOAD
&& s
->control_pid
== 0)
3007 service_enter_running(s
, SERVICE_SUCCESS
);
3012 /* Interpret STOPPING= */
3013 if (strv_find(tags
, "STOPPING=1")) {
3015 s
->notify_state
= NOTIFY_STOPPING
;
3017 if (s
->state
== SERVICE_RUNNING
)
3018 service_enter_stop_by_notify(s
);
3023 /* Interpret STATUS= */
3024 e
= strv_find_startswith(tags
, "STATUS=");
3026 _cleanup_free_
char *t
= NULL
;
3029 if (!utf8_is_valid(e
))
3030 log_unit_warning(u
, "Status message in notification message is not UTF-8 clean.");
3038 if (!streq_ptr(s
->status_text
, t
)) {
3040 free(s
->status_text
);
3048 /* Interpret ERRNO= */
3049 e
= strv_find_startswith(tags
, "ERRNO=");
3053 if (safe_atoi(e
, &status_errno
) < 0 || status_errno
< 0)
3054 log_unit_warning(u
, "Failed to parse ERRNO= field in notification message: %s", e
);
3056 if (s
->status_errno
!= status_errno
) {
3057 s
->status_errno
= status_errno
;
3063 /* Interpret WATCHDOG= */
3064 if (strv_find(tags
, "WATCHDOG=1"))
3065 service_reset_watchdog(s
);
3067 if (strv_find(tags
, "FDSTORE=1")) {
3070 name
= strv_find_startswith(tags
, "FDNAME=");
3071 if (name
&& !fdname_is_valid(name
)) {
3072 log_unit_warning(u
, "Passed FDNAME= name is invalid, ignoring.");
3076 service_add_fd_store_set(s
, fds
, name
);
3079 e
= strv_find_startswith(tags
, "WATCHDOG_USEC=");
3081 usec_t watchdog_override_usec
;
3082 if (safe_atou64(e
, &watchdog_override_usec
) < 0)
3083 log_unit_warning(u
, "Failed to parse WATCHDOG_USEC=%s", e
);
3085 service_reset_watchdog_timeout(s
, watchdog_override_usec
);
3088 /* Notify clients about changed status or main pid */
3090 unit_add_to_dbus_queue(u
);
3093 static int service_get_timeout(Unit
*u
, usec_t
*timeout
) {
3094 Service
*s
= SERVICE(u
);
3098 if (!s
->timer_event_source
)
3101 r
= sd_event_source_get_time(s
->timer_event_source
, &t
);
3104 if (t
== USEC_INFINITY
)
3111 static void service_bus_name_owner_change(
3114 const char *old_owner
,
3115 const char *new_owner
) {
3117 Service
*s
= SERVICE(u
);
3123 assert(streq(s
->bus_name
, name
));
3124 assert(old_owner
|| new_owner
);
3126 if (old_owner
&& new_owner
)
3127 log_unit_debug(u
, "D-Bus name %s changed owner from %s to %s", name
, old_owner
, new_owner
);
3129 log_unit_debug(u
, "D-Bus name %s no longer registered by %s", name
, old_owner
);
3131 log_unit_debug(u
, "D-Bus name %s now registered by %s", name
, new_owner
);
3133 s
->bus_name_good
= !!new_owner
;
3135 /* Track the current owner, so we can reconstruct changes after a daemon reload */
3136 r
= free_and_strdup(&s
->bus_name_owner
, new_owner
);
3138 log_unit_error_errno(u
, r
, "Unable to set new bus name owner %s: %m", new_owner
);
3142 if (s
->type
== SERVICE_DBUS
) {
3144 /* service_enter_running() will figure out what to
3146 if (s
->state
== SERVICE_RUNNING
)
3147 service_enter_running(s
, SERVICE_SUCCESS
);
3148 else if (s
->state
== SERVICE_START
&& new_owner
)
3149 service_enter_start_post(s
);
3151 } else if (new_owner
&&
3153 (s
->state
== SERVICE_START
||
3154 s
->state
== SERVICE_START_POST
||
3155 s
->state
== SERVICE_RUNNING
||
3156 s
->state
== SERVICE_RELOAD
)) {
3158 _cleanup_(sd_bus_creds_unrefp
) sd_bus_creds
*creds
= NULL
;
3161 /* Try to acquire PID from bus service */
3163 r
= sd_bus_get_name_creds(u
->manager
->api_bus
, name
, SD_BUS_CREDS_PID
, &creds
);
3165 r
= sd_bus_creds_get_pid(creds
, &pid
);
3167 log_unit_debug(u
, "D-Bus name %s is now owned by process %u", name
, (unsigned) pid
);
3169 service_set_main_pid(s
, pid
);
3170 unit_watch_pid(UNIT(s
), pid
);
3175 int service_set_socket_fd(Service
*s
, int fd
, Socket
*sock
, bool selinux_context_net
) {
3176 _cleanup_free_
char *peer
= NULL
;
3182 /* This is called by the socket code when instantiating a new service for a stream socket and the socket needs
3183 * to be configured. We take ownership of the passed fd on success. */
3185 if (UNIT(s
)->load_state
!= UNIT_LOADED
)
3188 if (s
->socket_fd
>= 0)
3191 if (s
->state
!= SERVICE_DEAD
)
3194 if (getpeername_pretty(fd
, true, &peer
) >= 0) {
3196 if (UNIT(s
)->description
) {
3197 _cleanup_free_
char *a
;
3199 a
= strjoin(UNIT(s
)->description
, " (", peer
, ")", NULL
);
3203 r
= unit_set_description(UNIT(s
), a
);
3205 r
= unit_set_description(UNIT(s
), peer
);
3211 r
= unit_add_two_dependencies(UNIT(sock
), UNIT_BEFORE
, UNIT_TRIGGERS
, UNIT(s
), false);
3216 s
->socket_fd_selinux_context_net
= selinux_context_net
;
3218 unit_ref_set(&s
->accept_socket
, UNIT(sock
));
3222 static void service_reset_failed(Unit
*u
) {
3223 Service
*s
= SERVICE(u
);
3227 if (s
->state
== SERVICE_FAILED
)
3228 service_set_state(s
, SERVICE_DEAD
);
3230 s
->result
= SERVICE_SUCCESS
;
3231 s
->reload_result
= SERVICE_SUCCESS
;
3234 static int service_kill(Unit
*u
, KillWho who
, int signo
, sd_bus_error
*error
) {
3235 Service
*s
= SERVICE(u
);
3237 return unit_kill_common(u
, who
, signo
, s
->main_pid
, s
->control_pid
, error
);
3240 static int service_main_pid(Unit
*u
) {
3241 Service
*s
= SERVICE(u
);
3248 static int service_control_pid(Unit
*u
) {
3249 Service
*s
= SERVICE(u
);
3253 return s
->control_pid
;
3256 static const char* const service_restart_table
[_SERVICE_RESTART_MAX
] = {
3257 [SERVICE_RESTART_NO
] = "no",
3258 [SERVICE_RESTART_ON_SUCCESS
] = "on-success",
3259 [SERVICE_RESTART_ON_FAILURE
] = "on-failure",
3260 [SERVICE_RESTART_ON_ABNORMAL
] = "on-abnormal",
3261 [SERVICE_RESTART_ON_WATCHDOG
] = "on-watchdog",
3262 [SERVICE_RESTART_ON_ABORT
] = "on-abort",
3263 [SERVICE_RESTART_ALWAYS
] = "always",
3266 DEFINE_STRING_TABLE_LOOKUP(service_restart
, ServiceRestart
);
3268 static const char* const service_type_table
[_SERVICE_TYPE_MAX
] = {
3269 [SERVICE_SIMPLE
] = "simple",
3270 [SERVICE_FORKING
] = "forking",
3271 [SERVICE_ONESHOT
] = "oneshot",
3272 [SERVICE_DBUS
] = "dbus",
3273 [SERVICE_NOTIFY
] = "notify",
3274 [SERVICE_IDLE
] = "idle"
3277 DEFINE_STRING_TABLE_LOOKUP(service_type
, ServiceType
);
3279 static const char* const service_exec_command_table
[_SERVICE_EXEC_COMMAND_MAX
] = {
3280 [SERVICE_EXEC_START_PRE
] = "ExecStartPre",
3281 [SERVICE_EXEC_START
] = "ExecStart",
3282 [SERVICE_EXEC_START_POST
] = "ExecStartPost",
3283 [SERVICE_EXEC_RELOAD
] = "ExecReload",
3284 [SERVICE_EXEC_STOP
] = "ExecStop",
3285 [SERVICE_EXEC_STOP_POST
] = "ExecStopPost",
3288 DEFINE_STRING_TABLE_LOOKUP(service_exec_command
, ServiceExecCommand
);
3290 static const char* const notify_access_table
[_NOTIFY_ACCESS_MAX
] = {
3291 [NOTIFY_NONE
] = "none",
3292 [NOTIFY_MAIN
] = "main",
3293 [NOTIFY_ALL
] = "all"
3296 DEFINE_STRING_TABLE_LOOKUP(notify_access
, NotifyAccess
);
3298 static const char* const notify_state_table
[_NOTIFY_STATE_MAX
] = {
3299 [NOTIFY_UNKNOWN
] = "unknown",
3300 [NOTIFY_READY
] = "ready",
3301 [NOTIFY_RELOADING
] = "reloading",
3302 [NOTIFY_STOPPING
] = "stopping",
3305 DEFINE_STRING_TABLE_LOOKUP(notify_state
, NotifyState
);
3307 static const char* const service_result_table
[_SERVICE_RESULT_MAX
] = {
3308 [SERVICE_SUCCESS
] = "success",
3309 [SERVICE_FAILURE_RESOURCES
] = "resources",
3310 [SERVICE_FAILURE_TIMEOUT
] = "timeout",
3311 [SERVICE_FAILURE_EXIT_CODE
] = "exit-code",
3312 [SERVICE_FAILURE_SIGNAL
] = "signal",
3313 [SERVICE_FAILURE_CORE_DUMP
] = "core-dump",
3314 [SERVICE_FAILURE_WATCHDOG
] = "watchdog",
3315 [SERVICE_FAILURE_START_LIMIT_HIT
] = "start-limit-hit",
3318 DEFINE_STRING_TABLE_LOOKUP(service_result
, ServiceResult
);
3320 const UnitVTable service_vtable
= {
3321 .object_size
= sizeof(Service
),
3322 .exec_context_offset
= offsetof(Service
, exec_context
),
3323 .cgroup_context_offset
= offsetof(Service
, cgroup_context
),
3324 .kill_context_offset
= offsetof(Service
, kill_context
),
3325 .exec_runtime_offset
= offsetof(Service
, exec_runtime
),
3331 .private_section
= "Service",
3333 .init
= service_init
,
3334 .done
= service_done
,
3335 .load
= service_load
,
3336 .release_resources
= service_release_resources
,
3338 .coldplug
= service_coldplug
,
3340 .dump
= service_dump
,
3342 .start
= service_start
,
3343 .stop
= service_stop
,
3344 .reload
= service_reload
,
3346 .can_reload
= service_can_reload
,
3348 .kill
= service_kill
,
3350 .serialize
= service_serialize
,
3351 .deserialize_item
= service_deserialize_item
,
3353 .active_state
= service_active_state
,
3354 .sub_state_to_string
= service_sub_state_to_string
,
3356 .check_gc
= service_check_gc
,
3358 .sigchld_event
= service_sigchld_event
,
3360 .reset_failed
= service_reset_failed
,
3362 .notify_cgroup_empty
= service_notify_cgroup_empty_event
,
3363 .notify_message
= service_notify_message
,
3365 .main_pid
= service_main_pid
,
3366 .control_pid
= service_control_pid
,
3368 .bus_name_owner_change
= service_bus_name_owner_change
,
3370 .bus_vtable
= bus_service_vtable
,
3371 .bus_set_property
= bus_service_set_property
,
3372 .bus_commit_properties
= bus_service_commit_properties
,
3374 .get_timeout
= service_get_timeout
,
3375 .can_transient
= true,
3377 .status_message_formats
= {
3378 .starting_stopping
= {
3379 [0] = "Starting %s...",
3380 [1] = "Stopping %s...",
3382 .finished_start_job
= {
3383 [JOB_DONE
] = "Started %s.",
3384 [JOB_FAILED
] = "Failed to start %s.",
3386 .finished_stop_job
= {
3387 [JOB_DONE
] = "Stopped %s.",
3388 [JOB_FAILED
] = "Stopped (with error) %s.",