1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
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 General Public License as published by
10 the Free Software Foundation; either version 2 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 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
29 #include "load-fragment.h"
30 #include "load-dropin.h"
34 #define COMMENTS "#;\n"
35 #define NEWLINES "\n\r"
38 static const UnitActiveState state_translation_table
[_SERVICE_STATE_MAX
] = {
39 [SERVICE_DEAD
] = UNIT_INACTIVE
,
40 [SERVICE_START_PRE
] = UNIT_ACTIVATING
,
41 [SERVICE_START
] = UNIT_ACTIVATING
,
42 [SERVICE_START_POST
] = UNIT_ACTIVATING
,
43 [SERVICE_RUNNING
] = UNIT_ACTIVE
,
44 [SERVICE_RELOAD
] = UNIT_ACTIVE_RELOADING
,
45 [SERVICE_STOP
] = UNIT_DEACTIVATING
,
46 [SERVICE_STOP_SIGTERM
] = UNIT_DEACTIVATING
,
47 [SERVICE_STOP_SIGKILL
] = UNIT_DEACTIVATING
,
48 [SERVICE_STOP_POST
] = UNIT_DEACTIVATING
,
49 [SERVICE_FINAL_SIGTERM
] = UNIT_DEACTIVATING
,
50 [SERVICE_FINAL_SIGKILL
] = UNIT_DEACTIVATING
,
51 [SERVICE_MAINTAINANCE
] = UNIT_INACTIVE
,
52 [SERVICE_AUTO_RESTART
] = UNIT_ACTIVATING
,
55 static void service_done(Unit
*u
) {
56 Service
*s
= SERVICE(u
);
66 exec_context_done(&s
->exec_context
);
67 exec_command_free_array(s
->exec_command
, _SERVICE_EXEC_MAX
);
68 s
->control_command
= NULL
;
70 /* This will leak a process, but at least no memory or any of
72 if (s
->main_pid
> 0) {
73 unit_unwatch_pid(u
, s
->main_pid
);
77 if (s
->control_pid
> 0) {
78 unit_unwatch_pid(u
, s
->control_pid
);
82 unit_unwatch_timer(u
, &s
->timer_watch
);
85 static int sysv_translate_name(const char *name
, char **_r
) {
87 static const char * const table
[] = {
88 "$local_fs", SPECIAL_LOCAL_FS_TARGET
,
89 "$network", SPECIAL_NETWORK_TARGET
,
90 "$named", SPECIAL_NSS_LOOKUP_TARGET
,
91 "$portmap", SPECIAL_RPCBIND_TARGET
,
92 "$remote_fs", SPECIAL_REMOTE_FS_TARGET
,
93 "$syslog", SPECIAL_SYSLOG_TARGET
,
94 "$time", SPECIAL_RTC_SET_TARGET
100 for (i
= 0; i
< ELEMENTSOF(table
); i
+= 2)
101 if (streq(table
[i
], name
)) {
102 if (!(r
= strdup(table
[i
+1])))
111 if (asprintf(&r
, "%s.service", name
) < 0)
122 static int sysv_chkconfig_order(Service
*s
) {
128 if (s
->sysv_start_priority
< 0)
131 /* If no LSB header is found we try to order init scripts via
132 * the start priority of the chkconfig header. */
134 LIST_FOREACH(units_per_type
, other
, UNIT(s
)->meta
.manager
->units_per_type
[UNIT_SERVICE
]) {
138 t
= (Service
*) other
;
143 if (t
->sysv_start_priority
< 0)
146 if (t
->sysv_start_priority
< s
->sysv_start_priority
)
148 else if (t
->sysv_start_priority
> s
->sysv_start_priority
)
153 /* FIXME: Maybe we should compare the name here lexicographically? */
155 if (!(r
= unit_add_dependency(UNIT(s
), d
, UNIT(t
))) < 0)
162 static ExecCommand
*exec_command_new(const char *path
, const char *arg1
) {
165 if (!(c
= new0(ExecCommand
, 1)))
168 if (!(c
->path
= strdup(path
))) {
173 if (!(c
->argv
= strv_new(path
, arg1
, NULL
))) {
182 static int sysv_exec_commands(Service
*s
) {
186 assert(s
->sysv_path
);
188 if (!(c
= exec_command_new(s
->sysv_path
, "start")))
190 exec_command_append_list(s
->exec_command
+SERVICE_EXEC_START
, c
);
192 if (!(c
= exec_command_new(s
->sysv_path
, "stop")))
194 exec_command_append_list(s
->exec_command
+SERVICE_EXEC_STOP
, c
);
196 if (!(c
= exec_command_new(s
->sysv_path
, "reload")))
198 exec_command_append_list(s
->exec_command
+SERVICE_EXEC_RELOAD
, c
);
203 static int service_load_sysv_path(Service
*s
, const char *path
) {
214 bool has_lsb
= false;
218 if (!(f
= fopen(path
, "re"))) {
219 r
= errno
== ENOENT
? 0 : -errno
;
223 s
->type
= SERVICE_FORKING
;
224 s
->restart
= SERVICE_ONCE
;
227 if (!(s
->sysv_path
= strdup(path
))) {
233 char l
[LINE_MAX
], *t
;
235 if (!fgets(l
, sizeof(l
), f
)) {
240 log_error("Failed to read configuration file '%s': %s", path
, strerror(-r
));
250 if (state
== NORMAL
&& streq(t
, "### BEGIN INIT INFO")) {
256 if ((state
== LSB_DESCRIPTION
|| state
== LSB
) && streq(t
, "### END INIT INFO")) {
262 t
+= strspn(t
, WHITESPACE
);
264 if (state
== NORMAL
) {
266 /* Try to parse Red Hat style chkconfig headers */
268 if (startswith(t
, "chkconfig:")) {
273 if (sscanf(t
+10, "%*15s %i %*i",
274 &start_priority
) != 1) {
276 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path
, line
);
280 if (start_priority
< 0 || start_priority
> 99) {
281 log_warning("[%s:%u] Start priority out of range. Ignoring.", path
, line
);
285 s
->sysv_start_priority
= start_priority
;
287 } else if (startswith(t
, "description:")) {
289 size_t k
= strlen(t
);
292 if (t
[k
-1] == '\\') {
297 if (!(d
= strdup(strstrip(t
+12)))) {
302 free(u
->meta
.description
);
303 u
->meta
.description
= d
;
305 } else if (startswith(t
, "pidfile:")) {
312 if (!path_is_absolute(fn
)) {
313 log_warning("[%s:%u] PID file not absolute. Ignoring.", path
, line
);
317 if (!(fn
= strdup(fn
))) {
326 } else if (state
== DESCRIPTION
) {
328 /* Try to parse Red Hat style description
331 size_t k
= strlen(t
);
339 assert(u
->meta
.description
);
340 if (asprintf(&d
, "%s %s", u
->meta
.description
, strstrip(t
)) < 0) {
345 free(u
->meta
.description
);
346 u
->meta
.description
= d
;
348 } else if (state
== LSB
|| state
== LSB_DESCRIPTION
) {
350 if (startswith(t
, "Provides:")) {
356 FOREACH_WORD(w
, z
, t
+9, i
) {
359 if (!(n
= strndup(w
, z
))) {
364 r
= sysv_translate_name(n
, &m
);
373 if (unit_name_to_type(m
) == UNIT_SERVICE
)
374 r
= unit_add_name(u
, m
);
376 if ((r
= unit_add_dependency_by_name_inverse(u
, UNIT_REQUIRES
, m
)) >= 0)
377 r
= unit_add_dependency_by_name(u
, UNIT_BEFORE
, m
);
386 } else if (startswith(t
, "Required-Start:") ||
387 startswith(t
, "Should-Start:")) {
393 FOREACH_WORD(w
, z
, strchr(t
, ':')+1, i
) {
396 if (!(n
= strndup(w
, z
))) {
401 r
= sysv_translate_name(n
, &m
);
410 if (!(r
= unit_add_dependency_by_name(u
, UNIT_AFTER
, m
)) < 0) {
415 r
= unit_add_dependency_by_name(
417 startswith(t
, "Required-Start:") ? UNIT_REQUIRES
: UNIT_WANTS
,
425 } else if (startswith(t
, "Description:")) {
428 state
= LSB_DESCRIPTION
;
430 if (!(d
= strdup(strstrip(t
+12)))) {
435 free(u
->meta
.description
);
436 u
->meta
.description
= d
;
438 } else if (startswith(t
, "Short-Description:") && !u
->meta
.description
) {
441 /* We use the short description only
442 * if no long description is set. */
446 if (!(d
= strdup(strstrip(t
+18)))) {
451 free(u
->meta
.description
);
452 u
->meta
.description
= d
;
454 } else if (state
== LSB_DESCRIPTION
) {
456 if (startswith(l
, "#\t") || startswith(l
, "# ")) {
459 assert(u
->meta
.description
);
460 if (asprintf(&d
, "%s %s", u
->meta
.description
, t
) < 0) {
465 free(u
->meta
.description
);
466 u
->meta
.description
= d
;
473 /* If the init script has no LSB header, then let's
474 * enforce the ordering via the chkconfig
478 if ((r
= sysv_chkconfig_order(s
)) < 0)
481 if ((r
= sysv_exec_commands(s
)) < 0)
494 static int service_load_sysv_name(Service
*s
, const char *name
) {
500 STRV_FOREACH(p
, UNIT(s
)->meta
.manager
->sysvinit_path
) {
504 if (asprintf(&path
, "%s/%s", *p
, name
) < 0)
507 assert(endswith(path
, ".service"));
508 path
[strlen(path
)-8] = 0;
510 r
= service_load_sysv_path(s
, path
);
520 static int service_load_sysv(Service
*s
) {
527 /* Load service data from SysV init scripts, preferably with
530 if (strv_isempty(UNIT(s
)->meta
.manager
->sysvinit_path
))
533 if ((t
= unit_id(UNIT(s
))))
534 if ((r
= service_load_sysv_name(s
, t
)) != 0)
537 SET_FOREACH(t
, UNIT(s
)->meta
.names
, i
)
538 if ((r
== service_load_sysv_name(s
, t
)) != 0)
544 static int service_init(Unit
*u
) {
546 Service
*s
= SERVICE(u
);
550 /* First, reset everything to the defaults, in case this is a
556 s
->timeout_usec
= DEFAULT_TIMEOUT_USEC
;
557 s
->restart_usec
= DEFAULT_RESTART_USEC
;
559 exec_context_init(&s
->exec_context
);
561 s
->timer_watch
.type
= WATCH_INVALID
;
563 s
->state
= SERVICE_DEAD
;
565 s
->sysv_start_priority
= -1;
566 s
->permissions_start_only
= false;
567 s
->root_directory_start_only
= false;
569 RATELIMIT_INIT(s
->ratelimit
, 10*USEC_PER_SEC
, 5);
571 /* Load a .service file */
572 if ((r
= unit_load_fragment(u
)) < 0) {
577 /* Load a classic init script as a fallback, if we couldn't find anything */
579 if ((r
= service_load_sysv(s
)) <= 0) {
581 return r
< 0 ? r
: -ENOENT
;
584 /* Load dropin directory data */
585 if ((r
= unit_load_dropin(u
)) < 0) {
590 /* Add default cgroup */
591 if ((r
= unit_add_default_cgroup(u
)) < 0) {
599 static void service_dump(Unit
*u
, FILE *f
, const char *prefix
) {
601 ServiceExecCommand c
;
602 Service
*s
= SERVICE(u
);
608 p2
= strappend(prefix
, "\t");
609 prefix2
= p2
? p2
: prefix
;
612 "%sService State: %s\n"
613 "%sPermissionsStartOnly: %s\n"
614 "%sRootDirectoryStartOnly: %s\n"
615 "%sValidNoProcess: %s\n",
616 prefix
, service_state_to_string(s
->state
),
617 prefix
, yes_no(s
->permissions_start_only
),
618 prefix
, yes_no(s
->root_directory_start_only
),
619 prefix
, yes_no(s
->valid_no_process
));
624 prefix
, s
->pid_file
);
627 exec_context_dump(&s
->exec_context
, f
, prefix
);
629 for (c
= 0; c
< _SERVICE_EXEC_MAX
; c
++) {
631 if (!s
->exec_command
[c
])
634 fprintf(f
, "%s→ %s:\n",
635 prefix
, service_exec_command_to_string(c
));
637 exec_command_dump_list(s
->exec_command
[c
], f
, prefix2
);
642 "%sSysV Init Script Path: %s\n",
643 prefix
, s
->sysv_path
);
645 if (s
->sysv_start_priority
>= 0)
647 "%sSysV Start Priority: %i\n",
648 prefix
, s
->sysv_start_priority
);
653 static int service_load_pid_file(Service
*s
) {
660 if (s
->main_pid_known
)
666 if ((r
= read_one_line_file(s
->pid_file
, &k
)) < 0)
669 if ((r
= safe_atolu(k
, &p
)) < 0) {
674 if ((unsigned long) (pid_t
) p
!= p
)
678 s
->main_pid_known
= true;
683 static int service_get_sockets(Service
*s
, Set
**_set
) {
692 /* Collects all Socket objects that belong to this
693 * service. Note that a service might have multiple sockets
694 * via multiple names. */
696 if (!(set
= set_new(NULL
, NULL
)))
699 SET_FOREACH(t
, UNIT(s
)->meta
.names
, i
) {
703 /* Look for all socket objects that go by any of our
704 * units and collect their fds */
706 if (!(k
= unit_name_change_suffix(t
, ".socket"))) {
711 p
= manager_get_unit(UNIT(s
)->meta
.manager
, k
);
716 if ((r
= set_put(set
, p
)) < 0)
729 static int service_notify_sockets(Service
*s
) {
737 /* Notifies all our sockets when we die */
739 if ((r
= service_get_sockets(s
, &set
)) < 0)
742 SET_FOREACH(sock
, set
, i
)
743 socket_notify_service_dead(sock
);
750 static void service_set_state(Service
*s
, ServiceState state
) {
751 ServiceState old_state
;
754 old_state
= s
->state
;
757 if (state
!= SERVICE_START_PRE
&&
758 state
!= SERVICE_START
&&
759 state
!= SERVICE_START_POST
&&
760 state
!= SERVICE_RELOAD
&&
761 state
!= SERVICE_STOP
&&
762 state
!= SERVICE_STOP_SIGTERM
&&
763 state
!= SERVICE_STOP_SIGKILL
&&
764 state
!= SERVICE_STOP_POST
&&
765 state
!= SERVICE_FINAL_SIGTERM
&&
766 state
!= SERVICE_FINAL_SIGKILL
&&
767 state
!= SERVICE_AUTO_RESTART
)
768 unit_unwatch_timer(UNIT(s
), &s
->timer_watch
);
770 if (state
!= SERVICE_START
&&
771 state
!= SERVICE_START_POST
&&
772 state
!= SERVICE_RUNNING
&&
773 state
!= SERVICE_RELOAD
&&
774 state
!= SERVICE_STOP
&&
775 state
!= SERVICE_STOP_SIGTERM
&&
776 state
!= SERVICE_STOP_SIGKILL
)
777 if (s
->main_pid
> 0) {
778 unit_unwatch_pid(UNIT(s
), s
->main_pid
);
782 if (state
!= SERVICE_START_PRE
&&
783 state
!= SERVICE_START
&&
784 state
!= SERVICE_START_POST
&&
785 state
!= SERVICE_RELOAD
&&
786 state
!= SERVICE_STOP
&&
787 state
!= SERVICE_STOP_SIGTERM
&&
788 state
!= SERVICE_STOP_SIGKILL
&&
789 state
!= SERVICE_STOP_POST
&&
790 state
!= SERVICE_FINAL_SIGTERM
&&
791 state
!= SERVICE_FINAL_SIGKILL
)
792 if (s
->control_pid
> 0) {
793 unit_unwatch_pid(UNIT(s
), s
->control_pid
);
797 if (state
!= SERVICE_START_PRE
&&
798 state
!= SERVICE_START
&&
799 state
!= SERVICE_START_POST
&&
800 state
!= SERVICE_RELOAD
&&
801 state
!= SERVICE_STOP
&&
802 state
!= SERVICE_STOP_POST
)
803 s
->control_command
= NULL
;
805 if (state
== SERVICE_DEAD
||
806 state
== SERVICE_STOP
||
807 state
== SERVICE_STOP_SIGTERM
||
808 state
== SERVICE_STOP_SIGKILL
||
809 state
== SERVICE_STOP_POST
||
810 state
== SERVICE_FINAL_SIGTERM
||
811 state
== SERVICE_FINAL_SIGKILL
||
812 state
== SERVICE_MAINTAINANCE
||
813 state
== SERVICE_AUTO_RESTART
)
814 service_notify_sockets(s
);
816 log_debug("%s changed %s → %s", unit_id(UNIT(s
)), service_state_to_string(old_state
), service_state_to_string(state
));
818 unit_notify(UNIT(s
), state_translation_table
[old_state
], state_translation_table
[state
]);
821 static int service_collect_fds(Service
*s
, int **fds
, unsigned *n_fds
) {
833 if ((r
= service_get_sockets(s
, &set
)) < 0)
836 SET_FOREACH(sock
, set
, i
) {
840 if ((r
= socket_collect_fds(sock
, &cfds
, &cn_fds
)) < 0)
852 if (!(t
= new(int, rn_fds
+cn_fds
))) {
858 memcpy(t
, rfds
, rn_fds
);
859 memcpy(t
+rn_fds
, cfds
, cn_fds
);
864 rn_fds
= rn_fds
+cn_fds
;
882 static int service_spawn(
887 bool apply_permissions
,
901 if ((r
= service_collect_fds(s
, &fds
, &n_fds
)) < 0)
905 if ((r
= unit_watch_timer(UNIT(s
), s
->timeout_usec
, &s
->timer_watch
)) < 0)
908 unit_unwatch_timer(UNIT(s
), &s
->timer_watch
);
910 if ((r
= exec_spawn(c
,
915 UNIT(s
)->meta
.cgroup_bondings
,
919 if ((r
= unit_watch_pid(UNIT(s
), pid
)) < 0)
920 /* FIXME: we need to do something here */
932 unit_unwatch_timer(UNIT(s
), &s
->timer_watch
);
937 static void service_enter_dead(Service
*s
, bool success
, bool allow_restart
) {
945 (s
->restart
== SERVICE_RESTART_ALWAYS
||
946 (s
->restart
== SERVICE_RESTART_ON_SUCCESS
&& !s
->failure
))) {
948 if ((r
= unit_watch_timer(UNIT(s
), s
->restart_usec
, &s
->timer_watch
)) < 0)
951 service_set_state(s
, SERVICE_AUTO_RESTART
);
953 service_set_state(s
, s
->failure
? SERVICE_MAINTAINANCE
: SERVICE_DEAD
);
958 log_warning("%s failed to run install restart timer: %s", unit_id(UNIT(s
)), strerror(-r
));
959 service_enter_dead(s
, false, false);
962 static void service_enter_signal(Service
*s
, ServiceState state
, bool success
);
964 static void service_enter_stop_post(Service
*s
, bool success
) {
971 if ((s
->control_command
= s
->exec_command
[SERVICE_EXEC_STOP_POST
]))
972 if ((r
= service_spawn(s
,
976 !s
->permissions_start_only
,
977 !s
->root_directory_start_only
,
978 &s
->control_pid
)) < 0)
982 service_set_state(s
, SERVICE_STOP_POST
);
984 if (!s
->control_command
)
985 service_enter_dead(s
, true, true);
990 log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s
)), strerror(-r
));
991 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, false);
994 static void service_enter_signal(Service
*s
, ServiceState state
, bool success
) {
1003 if (s
->main_pid
> 0 || s
->control_pid
> 0) {
1006 sig
= (state
== SERVICE_STOP_SIGTERM
|| state
== SERVICE_FINAL_SIGTERM
) ? SIGTERM
: SIGKILL
;
1009 if (s
->main_pid
> 0) {
1010 if (kill(s
->main_pid
, sig
) < 0 && errno
!= ESRCH
)
1016 if (s
->control_pid
> 0) {
1017 if (kill(s
->control_pid
, sig
) < 0 && errno
!= ESRCH
)
1027 service_set_state(s
, state
);
1029 if (s
->main_pid
<= 0 && s
->control_pid
<= 0)
1030 service_enter_dead(s
, true, true);
1035 log_warning("%s failed to kill processes: %s", unit_id(UNIT(s
)), strerror(-r
));
1039 service_set_state(s
, state
);
1040 } else if (state
== SERVICE_STOP_SIGTERM
|| state
== SERVICE_STOP_SIGKILL
)
1041 service_enter_stop_post(s
, false);
1043 service_enter_dead(s
, false, true);
1046 static void service_enter_stop(Service
*s
, bool success
) {
1053 if ((s
->control_command
= s
->exec_command
[SERVICE_EXEC_STOP
]))
1054 if ((r
= service_spawn(s
,
1058 !s
->permissions_start_only
,
1059 !s
->root_directory_start_only
,
1060 &s
->control_pid
)) < 0)
1063 service_set_state(s
, SERVICE_STOP
);
1065 if (!s
->control_command
)
1066 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, true);
1071 log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s
)), strerror(-r
));
1072 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, false);
1075 static void service_enter_start_post(Service
*s
) {
1079 if ((s
->control_command
= s
->exec_command
[SERVICE_EXEC_START_POST
]))
1080 if ((r
= service_spawn(s
,
1084 !s
->permissions_start_only
,
1085 !s
->root_directory_start_only
,
1086 &s
->control_pid
)) < 0)
1090 service_set_state(s
, SERVICE_START_POST
);
1092 if (!s
->control_command
)
1093 service_set_state(s
, SERVICE_RUNNING
);
1098 log_warning("%s failed to run start-post executable: %s", unit_id(UNIT(s
)), strerror(-r
));
1099 service_enter_stop(s
, false);
1102 static void service_enter_start(Service
*s
) {
1108 assert(s
->exec_command
[SERVICE_EXEC_START
]);
1109 assert(!s
->exec_command
[SERVICE_EXEC_START
]->command_next
);
1111 if ((r
= service_spawn(s
,
1112 s
->exec_command
[SERVICE_EXEC_START
],
1113 s
->type
== SERVICE_FORKING
,
1120 service_set_state(s
, SERVICE_START
);
1122 if (s
->type
== SERVICE_SIMPLE
) {
1123 /* For simple services we immediately start
1124 * the START_POST binaries. */
1127 s
->main_pid_known
= true;
1128 service_enter_start_post(s
);
1130 } else if (s
->type
== SERVICE_FORKING
) {
1132 /* For forking services we wait until the start
1133 * process exited. */
1135 s
->control_pid
= pid
;
1136 s
->control_command
= s
->exec_command
[SERVICE_EXEC_START
];
1137 } else if (s
->type
== SERVICE_FINISH
) {
1139 /* For finishing services we wait until the start
1140 * process exited, too, but it is our main process. */
1143 s
->control_command
= s
->exec_command
[SERVICE_EXEC_START
];
1145 assert_not_reached("Unknown service type");
1150 log_warning("%s failed to run start exectuable: %s", unit_id(UNIT(s
)), strerror(-r
));
1151 service_enter_stop(s
, false);
1154 static void service_enter_start_pre(Service
*s
) {
1159 if ((s
->control_command
= s
->exec_command
[SERVICE_EXEC_START_PRE
]))
1160 if ((r
= service_spawn(s
,
1164 !s
->permissions_start_only
,
1165 !s
->root_directory_start_only
,
1166 &s
->control_pid
)) < 0)
1169 service_set_state(s
, SERVICE_START_PRE
);
1171 if (!s
->control_command
)
1172 service_enter_start(s
);
1177 log_warning("%s failed to run start-pre executable: %s", unit_id(UNIT(s
)), strerror(-r
));
1178 service_enter_dead(s
, false, true);
1181 static void service_enter_restart(Service
*s
) {
1185 if ((r
= manager_add_job(UNIT(s
)->meta
.manager
, JOB_START
, UNIT(s
), JOB_FAIL
, false, NULL
)) < 0)
1188 log_debug("%s scheduled restart job.", unit_id(UNIT(s
)));
1189 service_enter_dead(s
, true, false);
1194 log_warning("%s failed to schedule restart job: %s", unit_id(UNIT(s
)), strerror(-r
));
1195 service_enter_dead(s
, false, false);
1198 static void service_enter_reload(Service
*s
) {
1203 if ((s
->control_command
= s
->exec_command
[SERVICE_EXEC_RELOAD
]))
1204 if ((r
= service_spawn(s
,
1208 !s
->permissions_start_only
,
1209 !s
->root_directory_start_only
,
1210 &s
->control_pid
)) < 0)
1213 service_set_state(s
, SERVICE_RELOAD
);
1215 if (!s
->control_command
)
1216 service_set_state(s
, SERVICE_RUNNING
);
1221 log_warning("%s failed to run reload executable: %s", unit_id(UNIT(s
)), strerror(-r
));
1222 service_enter_stop(s
, false);
1225 static void service_run_next(Service
*s
, bool success
) {
1229 assert(s
->control_command
);
1230 assert(s
->control_command
->command_next
);
1235 s
->control_command
= s
->control_command
->command_next
;
1237 if ((r
= service_spawn(s
,
1241 !s
->permissions_start_only
,
1242 !s
->root_directory_start_only
,
1243 &s
->control_pid
)) < 0)
1249 log_warning("%s failed to run spawn next executable: %s", unit_id(UNIT(s
)), strerror(-r
));
1251 if (s
->state
== SERVICE_STOP
)
1252 service_enter_stop_post(s
, false);
1253 else if (s
->state
== SERVICE_STOP_POST
)
1254 service_enter_dead(s
, false, true);
1256 service_enter_stop(s
, false);
1259 static int service_start(Unit
*u
) {
1260 Service
*s
= SERVICE(u
);
1264 /* We cannot fulfill this request right now, try again later
1266 if (s
->state
== SERVICE_STOP
||
1267 s
->state
== SERVICE_STOP_SIGTERM
||
1268 s
->state
== SERVICE_STOP_SIGKILL
||
1269 s
->state
== SERVICE_STOP_POST
||
1270 s
->state
== SERVICE_FINAL_SIGTERM
||
1271 s
->state
== SERVICE_FINAL_SIGKILL
)
1274 /* Already on it! */
1275 if (s
->state
== SERVICE_START_PRE
||
1276 s
->state
== SERVICE_START
||
1277 s
->state
== SERVICE_START_POST
)
1280 assert(s
->state
== SERVICE_DEAD
|| s
->state
== SERVICE_MAINTAINANCE
|| s
->state
== SERVICE_AUTO_RESTART
);
1282 /* Make sure we don't enter a busy loop of some kind. */
1283 if (!ratelimit_test(&s
->ratelimit
)) {
1284 log_warning("%s start request repeated too quickly, refusing to start.", unit_id(u
));
1289 s
->main_pid_known
= false;
1291 service_enter_start_pre(s
);
1295 static int service_stop(Unit
*u
) {
1296 Service
*s
= SERVICE(u
);
1300 if (s
->state
== SERVICE_START_PRE
||
1301 s
->state
== SERVICE_START
||
1302 s
->state
== SERVICE_START_POST
||
1303 s
->state
== SERVICE_RELOAD
)
1306 if (s
->state
== SERVICE_AUTO_RESTART
) {
1307 service_set_state(s
, SERVICE_DEAD
);
1311 assert(s
->state
== SERVICE_RUNNING
);
1313 service_enter_stop(s
, true);
1317 static int service_reload(Unit
*u
) {
1318 Service
*s
= SERVICE(u
);
1322 assert(s
->state
== SERVICE_RUNNING
);
1324 service_enter_reload(s
);
1328 static bool service_can_reload(Unit
*u
) {
1329 Service
*s
= SERVICE(u
);
1333 return !!s
->exec_command
[SERVICE_EXEC_RELOAD
];
1336 static UnitActiveState
service_active_state(Unit
*u
) {
1339 return state_translation_table
[SERVICE(u
)->state
];
1342 static int main_pid_good(Service
*s
) {
1345 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1348 /* If we know the pid file, then lets just check if it is
1350 if (s
->main_pid_known
)
1351 return s
->main_pid
> 0;
1353 /* We don't know the pid */
1357 static bool control_pid_good(Service
*s
) {
1360 return s
->control_pid
> 0;
1363 static int cgroup_good(Service
*s
) {
1366 if (s
->valid_no_process
)
1369 return cgroup_bonding_is_empty_list(UNIT(s
)->meta
.cgroup_bondings
);
1372 static void service_sigchld_event(Unit
*u
, pid_t pid
, int code
, int status
) {
1373 Service
*s
= SERVICE(u
);
1379 success
= code
== CLD_EXITED
&& status
== 0;
1380 s
->failure
= s
->failure
|| !success
;
1382 if (s
->main_pid
== pid
) {
1384 exec_status_fill(&s
->main_exec_status
, pid
, code
, status
);
1387 if (s
->type
== SERVICE_SIMPLE
|| s
->type
== SERVICE_FINISH
) {
1388 assert(s
->exec_command
[SERVICE_EXEC_START
]);
1389 s
->exec_command
[SERVICE_EXEC_START
]->exec_status
= s
->main_exec_status
;
1392 log_debug("%s: main process exited, code=%s status=%i", unit_id(u
), sigchld_code_to_string(code
), status
);
1394 /* The service exited, so the service is officially
1399 case SERVICE_START_POST
:
1400 case SERVICE_RELOAD
:
1402 /* Need to wait until the operation is
1407 assert(s
->type
== SERVICE_FINISH
);
1409 /* This was our main goal, so let's go on */
1411 service_enter_start_post(s
);
1413 service_enter_stop(s
, false);
1416 case SERVICE_RUNNING
:
1417 service_enter_stop(s
, success
);
1420 case SERVICE_STOP_SIGTERM
:
1421 case SERVICE_STOP_SIGKILL
:
1423 if (!control_pid_good(s
))
1424 service_enter_stop_post(s
, success
);
1426 /* If there is still a control process, wait for that first */
1430 assert_not_reached("Uh, main process died at wrong time.");
1433 } else if (s
->control_pid
== pid
) {
1434 assert(s
->control_command
);
1436 exec_status_fill(&s
->control_command
->exec_status
, pid
, code
, status
);
1439 log_debug("%s: control process exited, code=%s status=%i", unit_id(u
), sigchld_code_to_string(code
), status
);
1441 /* If we are shutting things down anyway we
1442 * don't care about failing commands. */
1444 if (s
->control_command
->command_next
&&
1445 (success
|| (s
->state
== SERVICE_STOP
|| s
->state
== SERVICE_STOP_POST
)))
1447 /* There is another command to *
1448 * execute, so let's do that. */
1450 service_run_next(s
, success
);
1453 /* No further commands for this step, so let's
1454 * figure out what to do next */
1456 log_debug("%s got final SIGCHLD for state %s", unit_id(u
), service_state_to_string(s
->state
));
1460 case SERVICE_START_PRE
:
1462 service_enter_start(s
);
1464 service_enter_stop(s
, false);
1468 assert(s
->type
== SERVICE_FORKING
);
1470 /* Let's try to load the pid
1471 * file here if we can. We
1472 * ignore the return value,
1473 * since the PID file might
1474 * actually be created by a
1475 * START_POST script */
1479 service_load_pid_file(s
);
1481 service_enter_start_post(s
);
1483 service_enter_stop(s
, false);
1487 case SERVICE_START_POST
:
1488 if (success
&& s
->pid_file
&& !s
->main_pid_known
) {
1491 /* Hmm, let's see if we can
1492 * load the pid now after the
1493 * start-post scripts got
1496 if ((r
= service_load_pid_file(s
)) < 0)
1497 log_warning("%s: failed to load PID file %s: %s", unit_id(UNIT(s
)), s
->pid_file
, strerror(-r
));
1502 case SERVICE_RELOAD
:
1504 if (main_pid_good(s
) != 0 && cgroup_good(s
) != 0)
1505 service_set_state(s
, SERVICE_RUNNING
);
1507 service_enter_stop(s
, true);
1509 service_enter_stop(s
, false);
1514 if (main_pid_good(s
) > 0)
1515 /* Still not dead and we know the PID? Let's go hunting. */
1516 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, success
);
1518 service_enter_stop_post(s
, success
);
1521 case SERVICE_STOP_SIGTERM
:
1522 case SERVICE_STOP_SIGKILL
:
1523 if (main_pid_good(s
) <= 0)
1524 service_enter_stop_post(s
, success
);
1526 /* If there is still a service
1527 * process around, wait until
1528 * that one quit, too */
1531 case SERVICE_STOP_POST
:
1532 case SERVICE_FINAL_SIGTERM
:
1533 case SERVICE_FINAL_SIGKILL
:
1534 service_enter_dead(s
, success
, true);
1538 assert_not_reached("Uh, control process died at wrong time.");
1542 assert_not_reached("Got SIGCHLD for unkown PID");
1545 static void service_timer_event(Unit
*u
, uint64_t elapsed
, Watch
* w
) {
1546 Service
*s
= SERVICE(u
);
1549 assert(elapsed
== 1);
1551 assert(w
== &s
->timer_watch
);
1555 case SERVICE_START_PRE
:
1557 case SERVICE_START_POST
:
1558 case SERVICE_RELOAD
:
1559 log_warning("%s operation timed out. Stopping.", unit_id(u
));
1560 service_enter_stop(s
, false);
1564 log_warning("%s stopping timed out. Terminating.", unit_id(u
));
1565 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, false);
1568 case SERVICE_STOP_SIGTERM
:
1569 log_warning("%s stopping timed out. Killing.", unit_id(u
));
1570 service_enter_signal(s
, SERVICE_STOP_SIGKILL
, false);
1573 case SERVICE_STOP_SIGKILL
:
1574 /* Uh, wie sent a SIGKILL and it is still not gone?
1575 * Must be something we cannot kill, so let's just be
1576 * weirded out and continue */
1578 log_warning("%s still around after SIGKILL. Ignoring.", unit_id(u
));
1579 service_enter_stop_post(s
, false);
1582 case SERVICE_STOP_POST
:
1583 log_warning("%s stopping timed out (2). Terminating.", unit_id(u
));
1584 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, false);
1587 case SERVICE_FINAL_SIGTERM
:
1588 log_warning("%s stopping timed out (2). Killing.", unit_id(u
));
1589 service_enter_signal(s
, SERVICE_FINAL_SIGKILL
, false);
1592 case SERVICE_FINAL_SIGKILL
:
1593 log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", unit_id(u
));
1594 service_enter_dead(s
, false, true);
1597 case SERVICE_AUTO_RESTART
:
1598 log_debug("%s holdoff time over, scheduling restart.", unit_id(u
));
1599 service_enter_restart(s
);
1603 assert_not_reached("Timeout at wrong time.");
1607 static void service_cgroup_notify_event(Unit
*u
) {
1608 Service
*s
= SERVICE(u
);
1612 log_debug("%s: cgroup is empty", unit_id(u
));
1616 /* Waiting for SIGCHLD is usually more interesting,
1617 * because it includes return codes/signals. Which is
1618 * why we ignore the cgroup events for most cases,
1619 * except when we don't know pid which to expect the
1622 case SERVICE_RUNNING
:
1624 if (!s
->valid_no_process
&& main_pid_good(s
) <= 0)
1625 service_enter_stop(s
, true);
1634 static int service_enumerate(Manager
*m
) {
1636 static const char * const rcnd
[] = {
1637 "../rc0.d", SPECIAL_RUNLEVEL0_TARGET
,
1638 "../rc1.d", SPECIAL_RUNLEVEL1_TARGET
,
1639 "../rc2.d", SPECIAL_RUNLEVEL2_TARGET
,
1640 "../rc3.d", SPECIAL_RUNLEVEL3_TARGET
,
1641 "../rc4.d", SPECIAL_RUNLEVEL4_TARGET
,
1642 "../rc5.d", SPECIAL_RUNLEVEL5_TARGET
,
1643 "../rc6.d", SPECIAL_RUNLEVEL6_TARGET
1649 char *path
= NULL
, *fpath
= NULL
, *name
= NULL
;
1654 STRV_FOREACH(p
, m
->sysvinit_path
)
1655 for (i
= 0; i
< ELEMENTSOF(rcnd
); i
+= 2) {
1660 if (asprintf(&path
, "%s/%s", *p
, rcnd
[i
]) < 0) {
1668 if (!(d
= opendir(path
))) {
1669 if (errno
!= ENOENT
)
1670 log_warning("opendir() failed on %s: %s", path
, strerror(errno
));
1675 while ((de
= readdir(d
))) {
1676 Unit
*runlevel
, *service
;
1678 if (ignore_file(de
->d_name
))
1681 if (de
->d_name
[0] != 'S' && de
->d_name
[0] != 'K')
1684 if (strlen(de
->d_name
) < 4)
1689 if (asprintf(&fpath
, "%s/%s/%s", *p
, rcnd
[i
], de
->d_name
) < 0) {
1694 if (access(fpath
, X_OK
) < 0) {
1696 if (errno
!= ENOENT
)
1697 log_warning("access() failed on %s: %s", fpath
, strerror(errno
));
1704 if (asprintf(&name
, "%s.service", de
->d_name
+3) < 0) {
1709 if ((r
= manager_load_unit(m
, name
, &service
)) < 0)
1712 if ((r
= manager_load_unit(m
, rcnd
[i
+1], &runlevel
)) < 0)
1715 if (de
->d_name
[0] == 'S') {
1716 if ((r
= unit_add_dependency(runlevel
, UNIT_WANTS
, service
)) < 0)
1719 if ((r
= unit_add_dependency(runlevel
, UNIT_AFTER
, service
)) < 0)
1722 if ((r
= unit_add_dependency(runlevel
, UNIT_CONFLICTS
, service
)) < 0)
1725 if ((r
= unit_add_dependency(runlevel
, UNIT_BEFORE
, service
)) < 0)
1742 static const char* const service_state_table
[_SERVICE_STATE_MAX
] = {
1743 [SERVICE_DEAD
] = "dead",
1744 [SERVICE_START_PRE
] = "start-pre",
1745 [SERVICE_START
] = "start",
1746 [SERVICE_START_POST
] = "start-post",
1747 [SERVICE_RUNNING
] = "running",
1748 [SERVICE_RELOAD
] = "reload",
1749 [SERVICE_STOP
] = "stop",
1750 [SERVICE_STOP_SIGTERM
] = "stop-sigterm",
1751 [SERVICE_STOP_SIGKILL
] = "stop-sigkill",
1752 [SERVICE_STOP_POST
] = "stop-post",
1753 [SERVICE_FINAL_SIGTERM
] = "final-sigterm",
1754 [SERVICE_FINAL_SIGKILL
] = "final-sigkill",
1755 [SERVICE_MAINTAINANCE
] = "maintainance",
1756 [SERVICE_AUTO_RESTART
] = "auto-restart",
1759 DEFINE_STRING_TABLE_LOOKUP(service_state
, ServiceState
);
1761 static const char* const service_restart_table
[_SERVICE_RESTART_MAX
] = {
1762 [SERVICE_ONCE
] = "once",
1763 [SERVICE_RESTART_ON_SUCCESS
] = "restart-on-success",
1764 [SERVICE_RESTART_ALWAYS
] = "restart-on-failure",
1767 DEFINE_STRING_TABLE_LOOKUP(service_restart
, ServiceRestart
);
1769 static const char* const service_type_table
[_SERVICE_TYPE_MAX
] = {
1770 [SERVICE_FORKING
] = "forking",
1771 [SERVICE_SIMPLE
] = "simple",
1772 [SERVICE_FINISH
] = "finish"
1775 DEFINE_STRING_TABLE_LOOKUP(service_type
, ServiceType
);
1777 static const char* const service_exec_command_table
[_SERVICE_EXEC_MAX
] = {
1778 [SERVICE_EXEC_START_PRE
] = "ExecStartPre",
1779 [SERVICE_EXEC_START
] = "ExecStart",
1780 [SERVICE_EXEC_START_POST
] = "ExecStartPost",
1781 [SERVICE_EXEC_RELOAD
] = "ExecReload",
1782 [SERVICE_EXEC_STOP
] = "ExecStop",
1783 [SERVICE_EXEC_STOP_POST
] = "ExecStopPost",
1786 DEFINE_STRING_TABLE_LOOKUP(service_exec_command
, ServiceExecCommand
);
1788 const UnitVTable service_vtable
= {
1789 .suffix
= ".service",
1791 .init
= service_init
,
1792 .done
= service_done
,
1794 .dump
= service_dump
,
1796 .start
= service_start
,
1797 .stop
= service_stop
,
1798 .reload
= service_reload
,
1800 .can_reload
= service_can_reload
,
1802 .active_state
= service_active_state
,
1804 .sigchld_event
= service_sigchld_event
,
1805 .timer_event
= service_timer_event
,
1807 .cgroup_notify_empty
= service_cgroup_notify_event
,
1809 .enumerate
= service_enumerate