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 char * const rcnd_table
[] = {
39 "/rc0.d", SPECIAL_RUNLEVEL0_TARGET
,
40 "/rc1.d", SPECIAL_RUNLEVEL1_TARGET
,
41 "/rc2.d", SPECIAL_RUNLEVEL2_TARGET
,
42 "/rc3.d", SPECIAL_RUNLEVEL3_TARGET
,
43 "/rc4.d", SPECIAL_RUNLEVEL4_TARGET
,
44 "/rc5.d", SPECIAL_RUNLEVEL5_TARGET
,
45 "/rc6.d", SPECIAL_RUNLEVEL6_TARGET
,
46 "/boot.d", SPECIAL_BASIC_TARGET
49 static const UnitActiveState state_translation_table
[_SERVICE_STATE_MAX
] = {
50 [SERVICE_DEAD
] = UNIT_INACTIVE
,
51 [SERVICE_START_PRE
] = UNIT_ACTIVATING
,
52 [SERVICE_START
] = UNIT_ACTIVATING
,
53 [SERVICE_START_POST
] = UNIT_ACTIVATING
,
54 [SERVICE_RUNNING
] = UNIT_ACTIVE
,
55 [SERVICE_RELOAD
] = UNIT_ACTIVE_RELOADING
,
56 [SERVICE_STOP
] = UNIT_DEACTIVATING
,
57 [SERVICE_STOP_SIGTERM
] = UNIT_DEACTIVATING
,
58 [SERVICE_STOP_SIGKILL
] = UNIT_DEACTIVATING
,
59 [SERVICE_STOP_POST
] = UNIT_DEACTIVATING
,
60 [SERVICE_FINAL_SIGTERM
] = UNIT_DEACTIVATING
,
61 [SERVICE_FINAL_SIGKILL
] = UNIT_DEACTIVATING
,
62 [SERVICE_MAINTAINANCE
] = UNIT_INACTIVE
,
63 [SERVICE_AUTO_RESTART
] = UNIT_ACTIVATING
,
66 static void service_done(Unit
*u
) {
67 Service
*s
= SERVICE(u
);
77 free(s
->sysv_runlevels
);
78 s
->sysv_runlevels
= NULL
;
80 exec_context_done(&s
->exec_context
);
81 exec_command_free_array(s
->exec_command
, _SERVICE_EXEC_MAX
);
82 s
->control_command
= NULL
;
84 /* This will leak a process, but at least no memory or any of
86 if (s
->main_pid
> 0) {
87 unit_unwatch_pid(u
, s
->main_pid
);
91 if (s
->control_pid
> 0) {
92 unit_unwatch_pid(u
, s
->control_pid
);
96 unit_unwatch_timer(u
, &s
->timer_watch
);
99 static int sysv_translate_name(const char *name
, char **_r
) {
101 static const char * const table
[] = {
102 "$local_fs", SPECIAL_LOCAL_FS_TARGET
,
103 "$network", SPECIAL_NETWORK_TARGET
,
104 "$named", SPECIAL_NSS_LOOKUP_TARGET
,
105 "$portmap", SPECIAL_RPCBIND_TARGET
,
106 "$remote_fs", SPECIAL_REMOTE_FS_TARGET
,
107 "$syslog", SPECIAL_SYSLOG_TARGET
,
108 "$time", SPECIAL_RTC_SET_TARGET
114 for (i
= 0; i
< ELEMENTSOF(table
); i
+= 2)
115 if (streq(table
[i
], name
)) {
116 if (!(r
= strdup(table
[i
+1])))
125 if (asprintf(&r
, "%s.service", name
) < 0)
136 static int sysv_chkconfig_order(Service
*s
) {
142 if (s
->sysv_start_priority
< 0)
145 /* For each pair of services where at least one lacks a LSB
146 * header, we use the start priority value to order things. */
148 LIST_FOREACH(units_per_type
, other
, UNIT(s
)->meta
.manager
->units_per_type
[UNIT_SERVICE
]) {
152 t
= (Service
*) other
;
157 if (t
->sysv_start_priority
< 0)
160 if (s
->sysv_has_lsb
&& t
->sysv_has_lsb
)
163 if (t
->sysv_start_priority
< s
->sysv_start_priority
)
165 else if (t
->sysv_start_priority
> s
->sysv_start_priority
)
170 /* FIXME: Maybe we should compare the name here lexicographically? */
172 if (!(r
= unit_add_dependency(UNIT(s
), d
, UNIT(t
))) < 0)
179 static ExecCommand
*exec_command_new(const char *path
, const char *arg1
) {
182 if (!(c
= new0(ExecCommand
, 1)))
185 if (!(c
->path
= strdup(path
))) {
190 if (!(c
->argv
= strv_new(path
, arg1
, NULL
))) {
199 static int sysv_exec_commands(Service
*s
) {
203 assert(s
->sysv_path
);
205 if (!(c
= exec_command_new(s
->sysv_path
, "start")))
207 exec_command_append_list(s
->exec_command
+SERVICE_EXEC_START
, c
);
209 if (!(c
= exec_command_new(s
->sysv_path
, "stop")))
211 exec_command_append_list(s
->exec_command
+SERVICE_EXEC_STOP
, c
);
213 if (!(c
= exec_command_new(s
->sysv_path
, "reload")))
215 exec_command_append_list(s
->exec_command
+SERVICE_EXEC_RELOAD
, c
);
220 static int priority_from_rcd(Service
*s
, const char *init_script
) {
224 STRV_FOREACH(p
, UNIT(s
)->meta
.manager
->sysvrcnd_path
)
225 for (i
= 0; i
< ELEMENTSOF(rcnd_table
); i
+= 2) {
230 if (asprintf(&path
, "%s/%s", *p
, rcnd_table
[i
]) < 0)
238 log_warning("opendir() failed on %s: %s", path
, strerror(errno
));
243 while ((de
= readdir(d
))) {
246 if (ignore_file(de
->d_name
))
249 if (de
->d_name
[0] != 'S')
252 if (strlen(de
->d_name
) < 4)
255 if (!streq(de
->d_name
+ 3, init_script
))
258 /* Yay, we found it! Now decode the priority */
260 a
= undecchar(de
->d_name
[1]);
261 b
= undecchar(de
->d_name
[2]);
266 s
->sysv_start_priority
= a
*10 + b
;
268 log_debug("Determined priority %i from link farm for %s", s
->sysv_start_priority
, unit_id(UNIT(s
)));
280 static int service_load_sysv_path(Service
*s
, const char *path
, UnitLoadState
*new_state
) {
298 if (!(f
= fopen(path
, "re"))) {
299 r
= errno
== ENOENT
? 0 : -errno
;
303 s
->type
= SERVICE_FORKING
;
304 s
->restart
= SERVICE_ONCE
;
307 if (!(s
->sysv_path
= strdup(path
))) {
313 char l
[LINE_MAX
], *t
;
315 if (!fgets(l
, sizeof(l
), f
)) {
320 log_error("Failed to read configuration file '%s': %s", path
, strerror(-r
));
330 if (state
== NORMAL
&& streq(t
, "### BEGIN INIT INFO")) {
332 s
->sysv_has_lsb
= true;
336 if ((state
== LSB_DESCRIPTION
|| state
== LSB
) && streq(t
, "### END INIT INFO")) {
342 t
+= strspn(t
, WHITESPACE
);
344 if (state
== NORMAL
) {
346 /* Try to parse Red Hat style chkconfig headers */
348 if (startswith(t
, "chkconfig:")) {
350 char runlevels
[16], *k
;
354 if (sscanf(t
+10, "%15s %i %*i",
356 &start_priority
) != 2) {
358 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path
, line
);
362 if (start_priority
< 0 || start_priority
> 99)
363 log_warning("[%s:%u] Start priority out of range. Ignoring.", path
, line
);
365 s
->sysv_start_priority
= start_priority
;
367 char_array_0(runlevels
);
368 k
= delete_chars(runlevels
, WHITESPACE
"-");
373 if (!(d
= strdup(k
))) {
378 free(s
->sysv_runlevels
);
379 s
->sysv_runlevels
= d
;
383 } else if (startswith(t
, "description:")) {
385 size_t k
= strlen(t
);
388 if (t
[k
-1] == '\\') {
393 if (!(d
= strdup(strstrip(t
+12)))) {
398 free(u
->meta
.description
);
399 u
->meta
.description
= d
;
401 } else if (startswith(t
, "pidfile:")) {
408 if (!path_is_absolute(fn
)) {
409 log_warning("[%s:%u] PID file not absolute. Ignoring.", path
, line
);
413 if (!(fn
= strdup(fn
))) {
422 } else if (state
== DESCRIPTION
) {
424 /* Try to parse Red Hat style description
427 size_t k
= strlen(t
);
435 assert(u
->meta
.description
);
436 if (asprintf(&d
, "%s %s", u
->meta
.description
, strstrip(t
)) < 0) {
441 free(u
->meta
.description
);
442 u
->meta
.description
= d
;
444 } else if (state
== LSB
|| state
== LSB_DESCRIPTION
) {
446 if (startswith(t
, "Provides:")) {
452 FOREACH_WORD(w
, z
, t
+9, i
) {
455 if (!(n
= strndup(w
, z
))) {
460 r
= sysv_translate_name(n
, &m
);
469 if (unit_name_to_type(m
) == UNIT_SERVICE
)
470 r
= unit_add_name(u
, m
);
472 if ((r
= unit_add_dependency_by_name_inverse(u
, UNIT_REQUIRES
, m
)) >= 0)
473 r
= unit_add_dependency_by_name(u
, UNIT_BEFORE
, m
);
482 } else if (startswith(t
, "Required-Start:") ||
483 startswith(t
, "Should-Start:")) {
489 FOREACH_WORD(w
, z
, strchr(t
, ':')+1, i
) {
492 if (!(n
= strndup(w
, z
))) {
497 r
= sysv_translate_name(n
, &m
);
506 r
= unit_add_dependency_by_name(u
, UNIT_AFTER
, m
);
512 } else if (startswith(t
, "Default-Start:")) {
517 k
= delete_chars(t
+14, WHITESPACE
"-");
520 if (!(d
= strdup(k
))) {
525 free(s
->sysv_runlevels
);
526 s
->sysv_runlevels
= d
;
529 } else if (startswith(t
, "Description:")) {
532 state
= LSB_DESCRIPTION
;
534 if (!(d
= strdup(strstrip(t
+12)))) {
539 free(u
->meta
.description
);
540 u
->meta
.description
= d
;
542 } else if (startswith(t
, "Short-Description:") &&
543 !u
->meta
.description
) {
546 /* We use the short description only
547 * if no long description is set. */
551 if (!(d
= strdup(strstrip(t
+18)))) {
556 u
->meta
.description
= d
;
558 } else if (state
== LSB_DESCRIPTION
) {
560 if (startswith(l
, "#\t") || startswith(l
, "# ")) {
563 assert(u
->meta
.description
);
564 if (asprintf(&d
, "%s %s", u
->meta
.description
, t
) < 0) {
569 free(u
->meta
.description
);
570 u
->meta
.description
= d
;
577 /* If init scripts have no LSB header, then we enforce the
578 * ordering via the chkconfig priorities. We try to determine
579 * a priority for *all* init scripts here, since they are
580 * needed as soon as at least one non-LSB script is used. */
582 if (s
->sysv_start_priority
< 0) {
583 log_debug("%s has no chkconfig header, trying to determine SysV priority from link farm.", unit_id(u
));
585 if ((r
= priority_from_rcd(s
, file_name_from_path(path
))) < 0)
588 if (s
->sysv_start_priority
< 0)
589 log_warning("%s has neither a chkconfig header nor a directory link, cannot order unit!", unit_id(u
));
592 if ((r
= sysv_exec_commands(s
)) < 0)
595 if ((r
= unit_add_dependency_by_name(u
, UNIT_REQUIRES
, SPECIAL_BASIC_TARGET
)) < 0 ||
596 (r
= unit_add_dependency_by_name(u
, UNIT_AFTER
, SPECIAL_BASIC_TARGET
)) < 0)
599 *new_state
= UNIT_LOADED
;
610 static int service_load_sysv_name(Service
*s
, const char *name
, UnitLoadState
*new_state
) {
616 STRV_FOREACH(p
, UNIT(s
)->meta
.manager
->sysvinit_path
) {
620 if (asprintf(&path
, "%s/%s", *p
, name
) < 0)
623 assert(endswith(path
, ".service"));
624 path
[strlen(path
)-8] = 0;
626 r
= service_load_sysv_path(s
, path
, new_state
);
632 if (*new_state
!= UNIT_STUB
)
639 static int service_load_sysv(Service
*s
, UnitLoadState
*new_state
) {
647 /* Load service data from SysV init scripts, preferably with
650 if (strv_isempty(UNIT(s
)->meta
.manager
->sysvinit_path
))
653 if ((t
= unit_id(UNIT(s
))))
654 if ((r
= service_load_sysv_name(s
, t
, new_state
)) < 0)
657 if (*new_state
== UNIT_STUB
)
658 SET_FOREACH(t
, UNIT(s
)->meta
.names
, i
) {
659 if ((r
== service_load_sysv_name(s
, t
, new_state
)) < 0)
662 if (*new_state
!= UNIT_STUB
)
669 static int service_init(Unit
*u
, UnitLoadState
*new_state
) {
671 Service
*s
= SERVICE(u
);
675 assert(*new_state
== UNIT_STUB
);
677 /* First, reset everything to the defaults, in case this is a
683 s
->timeout_usec
= DEFAULT_TIMEOUT_USEC
;
684 s
->restart_usec
= DEFAULT_RESTART_USEC
;
686 exec_context_init(&s
->exec_context
);
688 s
->timer_watch
.type
= WATCH_INVALID
;
690 s
->state
= SERVICE_DEAD
;
692 s
->sysv_start_priority
= -1;
693 s
->permissions_start_only
= false;
694 s
->root_directory_start_only
= false;
696 s
->sysv_has_lsb
= false;
698 RATELIMIT_INIT(s
->ratelimit
, 10*USEC_PER_SEC
, 5);
700 /* Load a .service file */
701 if ((r
= unit_load_fragment(u
, new_state
)) < 0)
704 /* Load a classic init script as a fallback, if we couldn't find anything */
705 if (*new_state
== UNIT_STUB
)
706 if ((r
= service_load_sysv(s
, new_state
)) < 0)
709 /* Still nothing found? Then let's give up */
710 if (*new_state
== UNIT_STUB
)
713 /* We were able to load something, then let's add in the
714 * dropin directories. */
715 if ((r
= unit_load_dropin(unit_follow_merge(u
))) < 0)
718 /* This is a new unit? Then let's add in some extras */
719 if (*new_state
== UNIT_LOADED
) {
720 if ((r
= unit_add_exec_dependencies(u
, &s
->exec_context
)) < 0)
723 if ((r
= unit_add_default_cgroup(u
)) < 0)
726 if ((r
= sysv_chkconfig_order(s
)) < 0)
733 static void service_dump(Unit
*u
, FILE *f
, const char *prefix
) {
735 ServiceExecCommand c
;
736 Service
*s
= SERVICE(u
);
742 p2
= strappend(prefix
, "\t");
743 prefix2
= p2
? p2
: prefix
;
746 "%sService State: %s\n"
747 "%sPermissionsStartOnly: %s\n"
748 "%sRootDirectoryStartOnly: %s\n"
749 "%sValidNoProcess: %s\n"
751 prefix
, service_state_to_string(s
->state
),
752 prefix
, yes_no(s
->permissions_start_only
),
753 prefix
, yes_no(s
->root_directory_start_only
),
754 prefix
, yes_no(s
->valid_no_process
),
755 prefix
, service_type_to_string(s
->type
));
760 prefix
, s
->pid_file
);
762 exec_context_dump(&s
->exec_context
, f
, prefix
);
764 for (c
= 0; c
< _SERVICE_EXEC_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
);
777 "%sSysV Init Script Path: %s\n"
778 "%sSysV Init Script has LSB Header: %s\n",
779 prefix
, s
->sysv_path
,
780 prefix
, yes_no(s
->sysv_has_lsb
));
782 if (s
->sysv_start_priority
>= 0)
784 "%sSysVStartPriority: %i\n",
785 prefix
, s
->sysv_start_priority
);
787 if (s
->sysv_runlevels
)
788 fprintf(f
, "%sSysVRunLevels: %s\n",
789 prefix
, s
->sysv_runlevels
);
794 static int service_load_pid_file(Service
*s
) {
801 if (s
->main_pid_known
)
807 if ((r
= read_one_line_file(s
->pid_file
, &k
)) < 0)
810 if ((r
= safe_atolu(k
, &p
)) < 0) {
815 if ((unsigned long) (pid_t
) p
!= p
)
819 s
->main_pid_known
= true;
824 static int service_get_sockets(Service
*s
, Set
**_set
) {
833 /* Collects all Socket objects that belong to this
834 * service. Note that a service might have multiple sockets
835 * via multiple names. */
837 if (!(set
= set_new(NULL
, NULL
)))
840 SET_FOREACH(t
, UNIT(s
)->meta
.names
, i
) {
844 /* Look for all socket objects that go by any of our
845 * units and collect their fds */
847 if (!(k
= unit_name_change_suffix(t
, ".socket"))) {
852 p
= manager_get_unit(UNIT(s
)->meta
.manager
, k
);
857 if ((r
= set_put(set
, p
)) < 0)
870 static int service_notify_sockets(Service
*s
) {
878 /* Notifies all our sockets when we die */
880 if ((r
= service_get_sockets(s
, &set
)) < 0)
883 SET_FOREACH(sock
, set
, i
)
884 socket_notify_service_dead(sock
);
891 static void service_set_state(Service
*s
, ServiceState state
) {
892 ServiceState old_state
;
895 old_state
= s
->state
;
898 if (state
!= SERVICE_START_PRE
&&
899 state
!= SERVICE_START
&&
900 state
!= SERVICE_START_POST
&&
901 state
!= SERVICE_RELOAD
&&
902 state
!= SERVICE_STOP
&&
903 state
!= SERVICE_STOP_SIGTERM
&&
904 state
!= SERVICE_STOP_SIGKILL
&&
905 state
!= SERVICE_STOP_POST
&&
906 state
!= SERVICE_FINAL_SIGTERM
&&
907 state
!= SERVICE_FINAL_SIGKILL
&&
908 state
!= SERVICE_AUTO_RESTART
)
909 unit_unwatch_timer(UNIT(s
), &s
->timer_watch
);
911 if (state
!= SERVICE_START
&&
912 state
!= SERVICE_START_POST
&&
913 state
!= SERVICE_RUNNING
&&
914 state
!= SERVICE_RELOAD
&&
915 state
!= SERVICE_STOP
&&
916 state
!= SERVICE_STOP_SIGTERM
&&
917 state
!= SERVICE_STOP_SIGKILL
)
918 if (s
->main_pid
> 0) {
919 unit_unwatch_pid(UNIT(s
), s
->main_pid
);
923 if (state
!= SERVICE_START_PRE
&&
924 state
!= SERVICE_START
&&
925 state
!= SERVICE_START_POST
&&
926 state
!= SERVICE_RELOAD
&&
927 state
!= SERVICE_STOP
&&
928 state
!= SERVICE_STOP_SIGTERM
&&
929 state
!= SERVICE_STOP_SIGKILL
&&
930 state
!= SERVICE_STOP_POST
&&
931 state
!= SERVICE_FINAL_SIGTERM
&&
932 state
!= SERVICE_FINAL_SIGKILL
)
933 if (s
->control_pid
> 0) {
934 unit_unwatch_pid(UNIT(s
), s
->control_pid
);
938 if (state
!= SERVICE_START_PRE
&&
939 state
!= SERVICE_START
&&
940 state
!= SERVICE_START_POST
&&
941 state
!= SERVICE_RELOAD
&&
942 state
!= SERVICE_STOP
&&
943 state
!= SERVICE_STOP_POST
)
944 s
->control_command
= NULL
;
946 if (state
== SERVICE_DEAD
||
947 state
== SERVICE_STOP
||
948 state
== SERVICE_STOP_SIGTERM
||
949 state
== SERVICE_STOP_SIGKILL
||
950 state
== SERVICE_STOP_POST
||
951 state
== SERVICE_FINAL_SIGTERM
||
952 state
== SERVICE_FINAL_SIGKILL
||
953 state
== SERVICE_MAINTAINANCE
||
954 state
== SERVICE_AUTO_RESTART
)
955 service_notify_sockets(s
);
957 log_debug("%s changed %s → %s", unit_id(UNIT(s
)), service_state_to_string(old_state
), service_state_to_string(state
));
959 unit_notify(UNIT(s
), state_translation_table
[old_state
], state_translation_table
[state
]);
962 static int service_collect_fds(Service
*s
, int **fds
, unsigned *n_fds
) {
974 if ((r
= service_get_sockets(s
, &set
)) < 0)
977 SET_FOREACH(sock
, set
, i
) {
981 if ((r
= socket_collect_fds(sock
, &cfds
, &cn_fds
)) < 0)
993 if (!(t
= new(int, rn_fds
+cn_fds
))) {
999 memcpy(t
, rfds
, rn_fds
);
1000 memcpy(t
+rn_fds
, cfds
, cn_fds
);
1005 rn_fds
= rn_fds
+cn_fds
;
1023 static int service_spawn(
1028 bool apply_permissions
,
1042 if ((r
= service_collect_fds(s
, &fds
, &n_fds
)) < 0)
1046 if ((r
= unit_watch_timer(UNIT(s
), s
->timeout_usec
, &s
->timer_watch
)) < 0)
1049 unit_unwatch_timer(UNIT(s
), &s
->timer_watch
);
1051 if ((r
= exec_spawn(c
,
1056 UNIT(s
)->meta
.cgroup_bondings
,
1060 if ((r
= unit_watch_pid(UNIT(s
), pid
)) < 0)
1061 /* FIXME: we need to do something here */
1073 unit_unwatch_timer(UNIT(s
), &s
->timer_watch
);
1078 static void service_enter_dead(Service
*s
, bool success
, bool allow_restart
) {
1085 if (allow_restart
&&
1086 (s
->restart
== SERVICE_RESTART_ALWAYS
||
1087 (s
->restart
== SERVICE_RESTART_ON_SUCCESS
&& !s
->failure
))) {
1089 if ((r
= unit_watch_timer(UNIT(s
), s
->restart_usec
, &s
->timer_watch
)) < 0)
1092 service_set_state(s
, SERVICE_AUTO_RESTART
);
1094 service_set_state(s
, s
->failure
? SERVICE_MAINTAINANCE
: SERVICE_DEAD
);
1099 log_warning("%s failed to run install restart timer: %s", unit_id(UNIT(s
)), strerror(-r
));
1100 service_enter_dead(s
, false, false);
1103 static void service_enter_signal(Service
*s
, ServiceState state
, bool success
);
1105 static void service_enter_stop_post(Service
*s
, bool success
) {
1112 if ((s
->control_command
= s
->exec_command
[SERVICE_EXEC_STOP_POST
]))
1113 if ((r
= service_spawn(s
,
1117 !s
->permissions_start_only
,
1118 !s
->root_directory_start_only
,
1119 &s
->control_pid
)) < 0)
1123 service_set_state(s
, SERVICE_STOP_POST
);
1125 if (!s
->control_command
)
1126 service_enter_dead(s
, true, true);
1131 log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s
)), strerror(-r
));
1132 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, false);
1135 static void service_enter_signal(Service
*s
, ServiceState state
, bool success
) {
1144 if (s
->main_pid
> 0 || s
->control_pid
> 0) {
1147 sig
= (state
== SERVICE_STOP_SIGTERM
|| state
== SERVICE_FINAL_SIGTERM
) ? SIGTERM
: SIGKILL
;
1150 if (s
->main_pid
> 0) {
1151 if (kill(s
->main_pid
, sig
) < 0 && errno
!= ESRCH
)
1157 if (s
->control_pid
> 0) {
1158 if (kill(s
->control_pid
, sig
) < 0 && errno
!= ESRCH
)
1168 service_set_state(s
, state
);
1170 if (s
->main_pid
<= 0 && s
->control_pid
<= 0)
1171 service_enter_dead(s
, true, true);
1176 log_warning("%s failed to kill processes: %s", unit_id(UNIT(s
)), strerror(-r
));
1180 service_set_state(s
, state
);
1181 } else if (state
== SERVICE_STOP_SIGTERM
|| state
== SERVICE_STOP_SIGKILL
)
1182 service_enter_stop_post(s
, false);
1184 service_enter_dead(s
, false, true);
1187 static void service_enter_stop(Service
*s
, bool success
) {
1194 if ((s
->control_command
= s
->exec_command
[SERVICE_EXEC_STOP
]))
1195 if ((r
= service_spawn(s
,
1199 !s
->permissions_start_only
,
1200 !s
->root_directory_start_only
,
1201 &s
->control_pid
)) < 0)
1204 service_set_state(s
, SERVICE_STOP
);
1206 if (!s
->control_command
)
1207 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, true);
1212 log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s
)), strerror(-r
));
1213 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, false);
1216 static void service_enter_start_post(Service
*s
) {
1220 if ((s
->control_command
= s
->exec_command
[SERVICE_EXEC_START_POST
]))
1221 if ((r
= service_spawn(s
,
1225 !s
->permissions_start_only
,
1226 !s
->root_directory_start_only
,
1227 &s
->control_pid
)) < 0)
1231 service_set_state(s
, SERVICE_START_POST
);
1233 if (!s
->control_command
)
1234 service_set_state(s
, SERVICE_RUNNING
);
1239 log_warning("%s failed to run start-post executable: %s", unit_id(UNIT(s
)), strerror(-r
));
1240 service_enter_stop(s
, false);
1243 static void service_enter_start(Service
*s
) {
1249 assert(s
->exec_command
[SERVICE_EXEC_START
]);
1250 assert(!s
->exec_command
[SERVICE_EXEC_START
]->command_next
);
1252 if ((r
= service_spawn(s
,
1253 s
->exec_command
[SERVICE_EXEC_START
],
1254 s
->type
== SERVICE_FORKING
,
1261 service_set_state(s
, SERVICE_START
);
1263 if (s
->type
== SERVICE_SIMPLE
) {
1264 /* For simple services we immediately start
1265 * the START_POST binaries. */
1268 s
->main_pid_known
= true;
1269 service_enter_start_post(s
);
1271 } else if (s
->type
== SERVICE_FORKING
) {
1273 /* For forking services we wait until the start
1274 * process exited. */
1276 s
->control_pid
= pid
;
1277 s
->control_command
= s
->exec_command
[SERVICE_EXEC_START
];
1278 } else if (s
->type
== SERVICE_FINISH
) {
1280 /* For finishing services we wait until the start
1281 * process exited, too, but it is our main process. */
1284 s
->control_command
= s
->exec_command
[SERVICE_EXEC_START
];
1286 assert_not_reached("Unknown service type");
1291 log_warning("%s failed to run start exectuable: %s", unit_id(UNIT(s
)), strerror(-r
));
1292 service_enter_stop(s
, false);
1295 static void service_enter_start_pre(Service
*s
) {
1300 if ((s
->control_command
= s
->exec_command
[SERVICE_EXEC_START_PRE
]))
1301 if ((r
= service_spawn(s
,
1305 !s
->permissions_start_only
,
1306 !s
->root_directory_start_only
,
1307 &s
->control_pid
)) < 0)
1310 service_set_state(s
, SERVICE_START_PRE
);
1312 if (!s
->control_command
)
1313 service_enter_start(s
);
1318 log_warning("%s failed to run start-pre executable: %s", unit_id(UNIT(s
)), strerror(-r
));
1319 service_enter_dead(s
, false, true);
1322 static void service_enter_restart(Service
*s
) {
1326 if ((r
= manager_add_job(UNIT(s
)->meta
.manager
, JOB_START
, UNIT(s
), JOB_FAIL
, false, NULL
)) < 0)
1329 log_debug("%s scheduled restart job.", unit_id(UNIT(s
)));
1330 service_enter_dead(s
, true, false);
1335 log_warning("%s failed to schedule restart job: %s", unit_id(UNIT(s
)), strerror(-r
));
1336 service_enter_dead(s
, false, false);
1339 static void service_enter_reload(Service
*s
) {
1344 if ((s
->control_command
= s
->exec_command
[SERVICE_EXEC_RELOAD
]))
1345 if ((r
= service_spawn(s
,
1349 !s
->permissions_start_only
,
1350 !s
->root_directory_start_only
,
1351 &s
->control_pid
)) < 0)
1354 service_set_state(s
, SERVICE_RELOAD
);
1356 if (!s
->control_command
)
1357 service_set_state(s
, SERVICE_RUNNING
);
1362 log_warning("%s failed to run reload executable: %s", unit_id(UNIT(s
)), strerror(-r
));
1363 service_enter_stop(s
, false);
1366 static void service_run_next(Service
*s
, bool success
) {
1370 assert(s
->control_command
);
1371 assert(s
->control_command
->command_next
);
1376 s
->control_command
= s
->control_command
->command_next
;
1378 if ((r
= service_spawn(s
,
1382 !s
->permissions_start_only
,
1383 !s
->root_directory_start_only
,
1384 &s
->control_pid
)) < 0)
1390 log_warning("%s failed to run spawn next executable: %s", unit_id(UNIT(s
)), strerror(-r
));
1392 if (s
->state
== SERVICE_STOP
)
1393 service_enter_stop_post(s
, false);
1394 else if (s
->state
== SERVICE_STOP_POST
)
1395 service_enter_dead(s
, false, true);
1397 service_enter_stop(s
, false);
1400 static int service_start(Unit
*u
) {
1401 Service
*s
= SERVICE(u
);
1405 /* We cannot fulfill this request right now, try again later
1407 if (s
->state
== SERVICE_STOP
||
1408 s
->state
== SERVICE_STOP_SIGTERM
||
1409 s
->state
== SERVICE_STOP_SIGKILL
||
1410 s
->state
== SERVICE_STOP_POST
||
1411 s
->state
== SERVICE_FINAL_SIGTERM
||
1412 s
->state
== SERVICE_FINAL_SIGKILL
)
1415 /* Already on it! */
1416 if (s
->state
== SERVICE_START_PRE
||
1417 s
->state
== SERVICE_START
||
1418 s
->state
== SERVICE_START_POST
)
1421 assert(s
->state
== SERVICE_DEAD
|| s
->state
== SERVICE_MAINTAINANCE
|| s
->state
== SERVICE_AUTO_RESTART
);
1423 /* Make sure we don't enter a busy loop of some kind. */
1424 if (!ratelimit_test(&s
->ratelimit
)) {
1425 log_warning("%s start request repeated too quickly, refusing to start.", unit_id(u
));
1430 s
->main_pid_known
= false;
1432 service_enter_start_pre(s
);
1436 static int service_stop(Unit
*u
) {
1437 Service
*s
= SERVICE(u
);
1441 if (s
->state
== SERVICE_START_PRE
||
1442 s
->state
== SERVICE_START
||
1443 s
->state
== SERVICE_START_POST
||
1444 s
->state
== SERVICE_RELOAD
)
1447 if (s
->state
== SERVICE_AUTO_RESTART
) {
1448 service_set_state(s
, SERVICE_DEAD
);
1452 assert(s
->state
== SERVICE_RUNNING
);
1454 service_enter_stop(s
, true);
1458 static int service_reload(Unit
*u
) {
1459 Service
*s
= SERVICE(u
);
1463 assert(s
->state
== SERVICE_RUNNING
);
1465 service_enter_reload(s
);
1469 static bool service_can_reload(Unit
*u
) {
1470 Service
*s
= SERVICE(u
);
1474 return !!s
->exec_command
[SERVICE_EXEC_RELOAD
];
1477 static UnitActiveState
service_active_state(Unit
*u
) {
1480 return state_translation_table
[SERVICE(u
)->state
];
1483 static int main_pid_good(Service
*s
) {
1486 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1489 /* If we know the pid file, then lets just check if it is
1491 if (s
->main_pid_known
)
1492 return s
->main_pid
> 0;
1494 /* We don't know the pid */
1498 static bool control_pid_good(Service
*s
) {
1501 return s
->control_pid
> 0;
1504 static int cgroup_good(Service
*s
) {
1507 if (s
->valid_no_process
)
1510 return cgroup_bonding_is_empty_list(UNIT(s
)->meta
.cgroup_bondings
);
1513 static void service_sigchld_event(Unit
*u
, pid_t pid
, int code
, int status
) {
1514 Service
*s
= SERVICE(u
);
1520 success
= code
== CLD_EXITED
&& status
== 0;
1521 s
->failure
= s
->failure
|| !success
;
1523 if (s
->main_pid
== pid
) {
1525 exec_status_fill(&s
->main_exec_status
, pid
, code
, status
);
1528 if (s
->type
== SERVICE_SIMPLE
|| s
->type
== SERVICE_FINISH
) {
1529 assert(s
->exec_command
[SERVICE_EXEC_START
]);
1530 s
->exec_command
[SERVICE_EXEC_START
]->exec_status
= s
->main_exec_status
;
1533 log_debug("%s: main process exited, code=%s status=%i", unit_id(u
), sigchld_code_to_string(code
), status
);
1535 /* The service exited, so the service is officially
1540 case SERVICE_START_POST
:
1541 case SERVICE_RELOAD
:
1543 /* Need to wait until the operation is
1548 assert(s
->type
== SERVICE_FINISH
);
1550 /* This was our main goal, so let's go on */
1552 service_enter_start_post(s
);
1554 service_enter_stop(s
, false);
1557 case SERVICE_RUNNING
:
1558 service_enter_stop(s
, success
);
1561 case SERVICE_STOP_SIGTERM
:
1562 case SERVICE_STOP_SIGKILL
:
1564 if (!control_pid_good(s
))
1565 service_enter_stop_post(s
, success
);
1567 /* If there is still a control process, wait for that first */
1571 assert_not_reached("Uh, main process died at wrong time.");
1574 } else if (s
->control_pid
== pid
) {
1575 assert(s
->control_command
);
1577 exec_status_fill(&s
->control_command
->exec_status
, pid
, code
, status
);
1580 log_debug("%s: control process exited, code=%s status=%i", unit_id(u
), sigchld_code_to_string(code
), status
);
1582 /* If we are shutting things down anyway we
1583 * don't care about failing commands. */
1585 if (s
->control_command
->command_next
&&
1586 (success
|| (s
->state
== SERVICE_STOP
|| s
->state
== SERVICE_STOP_POST
)))
1588 /* There is another command to *
1589 * execute, so let's do that. */
1591 service_run_next(s
, success
);
1594 /* No further commands for this step, so let's
1595 * figure out what to do next */
1597 log_debug("%s got final SIGCHLD for state %s", unit_id(u
), service_state_to_string(s
->state
));
1601 case SERVICE_START_PRE
:
1603 service_enter_start(s
);
1605 service_enter_stop(s
, false);
1609 assert(s
->type
== SERVICE_FORKING
);
1611 /* Let's try to load the pid
1612 * file here if we can. We
1613 * ignore the return value,
1614 * since the PID file might
1615 * actually be created by a
1616 * START_POST script */
1620 service_load_pid_file(s
);
1622 service_enter_start_post(s
);
1624 service_enter_stop(s
, false);
1628 case SERVICE_START_POST
:
1629 if (success
&& s
->pid_file
&& !s
->main_pid_known
) {
1632 /* Hmm, let's see if we can
1633 * load the pid now after the
1634 * start-post scripts got
1637 if ((r
= service_load_pid_file(s
)) < 0)
1638 log_warning("%s: failed to load PID file %s: %s", unit_id(UNIT(s
)), s
->pid_file
, strerror(-r
));
1643 case SERVICE_RELOAD
:
1645 if (main_pid_good(s
) != 0 && cgroup_good(s
) != 0)
1646 service_set_state(s
, SERVICE_RUNNING
);
1648 service_enter_stop(s
, true);
1650 service_enter_stop(s
, false);
1655 if (main_pid_good(s
) > 0)
1656 /* Still not dead and we know the PID? Let's go hunting. */
1657 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, success
);
1659 service_enter_stop_post(s
, success
);
1662 case SERVICE_STOP_SIGTERM
:
1663 case SERVICE_STOP_SIGKILL
:
1664 if (main_pid_good(s
) <= 0)
1665 service_enter_stop_post(s
, success
);
1667 /* If there is still a service
1668 * process around, wait until
1669 * that one quit, too */
1672 case SERVICE_STOP_POST
:
1673 case SERVICE_FINAL_SIGTERM
:
1674 case SERVICE_FINAL_SIGKILL
:
1675 service_enter_dead(s
, success
, true);
1679 assert_not_reached("Uh, control process died at wrong time.");
1683 assert_not_reached("Got SIGCHLD for unkown PID");
1686 static void service_timer_event(Unit
*u
, uint64_t elapsed
, Watch
* w
) {
1687 Service
*s
= SERVICE(u
);
1690 assert(elapsed
== 1);
1692 assert(w
== &s
->timer_watch
);
1696 case SERVICE_START_PRE
:
1698 case SERVICE_START_POST
:
1699 case SERVICE_RELOAD
:
1700 log_warning("%s operation timed out. Stopping.", unit_id(u
));
1701 service_enter_stop(s
, false);
1705 log_warning("%s stopping timed out. Terminating.", unit_id(u
));
1706 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, false);
1709 case SERVICE_STOP_SIGTERM
:
1710 log_warning("%s stopping timed out. Killing.", unit_id(u
));
1711 service_enter_signal(s
, SERVICE_STOP_SIGKILL
, false);
1714 case SERVICE_STOP_SIGKILL
:
1715 /* Uh, wie sent a SIGKILL and it is still not gone?
1716 * Must be something we cannot kill, so let's just be
1717 * weirded out and continue */
1719 log_warning("%s still around after SIGKILL. Ignoring.", unit_id(u
));
1720 service_enter_stop_post(s
, false);
1723 case SERVICE_STOP_POST
:
1724 log_warning("%s stopping timed out (2). Terminating.", unit_id(u
));
1725 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, false);
1728 case SERVICE_FINAL_SIGTERM
:
1729 log_warning("%s stopping timed out (2). Killing.", unit_id(u
));
1730 service_enter_signal(s
, SERVICE_FINAL_SIGKILL
, false);
1733 case SERVICE_FINAL_SIGKILL
:
1734 log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", unit_id(u
));
1735 service_enter_dead(s
, false, true);
1738 case SERVICE_AUTO_RESTART
:
1739 log_debug("%s holdoff time over, scheduling restart.", unit_id(u
));
1740 service_enter_restart(s
);
1744 assert_not_reached("Timeout at wrong time.");
1748 static void service_cgroup_notify_event(Unit
*u
) {
1749 Service
*s
= SERVICE(u
);
1753 log_debug("%s: cgroup is empty", unit_id(u
));
1757 /* Waiting for SIGCHLD is usually more interesting,
1758 * because it includes return codes/signals. Which is
1759 * why we ignore the cgroup events for most cases,
1760 * except when we don't know pid which to expect the
1763 case SERVICE_RUNNING
:
1765 if (!s
->valid_no_process
&& main_pid_good(s
) <= 0)
1766 service_enter_stop(s
, true);
1775 static int service_enumerate(Manager
*m
) {
1779 char *path
= NULL
, *fpath
= NULL
, *name
= NULL
;
1784 STRV_FOREACH(p
, m
->sysvrcnd_path
)
1785 for (i
= 0; i
< ELEMENTSOF(rcnd_table
); i
+= 2) {
1790 if (asprintf(&path
, "%s/%s", *p
, rcnd_table
[i
]) < 0) {
1798 if (!(d
= opendir(path
))) {
1799 if (errno
!= ENOENT
)
1800 log_warning("opendir() failed on %s: %s", path
, strerror(errno
));
1805 while ((de
= readdir(d
))) {
1806 Unit
*runlevel
, *service
;
1808 if (ignore_file(de
->d_name
))
1811 if (de
->d_name
[0] != 'S' && de
->d_name
[0] != 'K')
1814 if (strlen(de
->d_name
) < 4)
1819 if (asprintf(&fpath
, "%s/%s/%s", *p
, rcnd_table
[i
], de
->d_name
) < 0) {
1824 if (access(fpath
, X_OK
) < 0) {
1826 if (errno
!= ENOENT
)
1827 log_warning("access() failed on %s: %s", fpath
, strerror(errno
));
1834 if (asprintf(&name
, "%s.service", de
->d_name
+3) < 0) {
1839 if ((r
= manager_load_unit(m
, name
, &service
)) < 0)
1842 if ((r
= manager_load_unit(m
, rcnd_table
[i
+1], &runlevel
)) < 0)
1845 if (de
->d_name
[0] == 'S') {
1846 if ((r
= unit_add_dependency(runlevel
, UNIT_WANTS
, service
)) < 0)
1849 if ((r
= unit_add_dependency(runlevel
, UNIT_AFTER
, service
)) < 0)
1852 } else if (de
->d_name
[0] == 'K' &&
1853 (streq(rcnd_table
[i
+1], SPECIAL_RUNLEVEL0_TARGET
) ||
1854 streq(rcnd_table
[i
+1], SPECIAL_RUNLEVEL6_TARGET
))) {
1856 /* We honour K links only for
1857 * halt/reboot. For the normal
1858 * runlevels we assume the
1860 * implicitly added by the
1863 if ((r
= unit_add_dependency(runlevel
, UNIT_CONFLICTS
, service
)) < 0)
1866 if ((r
= unit_add_dependency(runlevel
, UNIT_BEFORE
, service
)) < 0)
1883 static const char* const service_state_table
[_SERVICE_STATE_MAX
] = {
1884 [SERVICE_DEAD
] = "dead",
1885 [SERVICE_START_PRE
] = "start-pre",
1886 [SERVICE_START
] = "start",
1887 [SERVICE_START_POST
] = "start-post",
1888 [SERVICE_RUNNING
] = "running",
1889 [SERVICE_RELOAD
] = "reload",
1890 [SERVICE_STOP
] = "stop",
1891 [SERVICE_STOP_SIGTERM
] = "stop-sigterm",
1892 [SERVICE_STOP_SIGKILL
] = "stop-sigkill",
1893 [SERVICE_STOP_POST
] = "stop-post",
1894 [SERVICE_FINAL_SIGTERM
] = "final-sigterm",
1895 [SERVICE_FINAL_SIGKILL
] = "final-sigkill",
1896 [SERVICE_MAINTAINANCE
] = "maintainance",
1897 [SERVICE_AUTO_RESTART
] = "auto-restart",
1900 DEFINE_STRING_TABLE_LOOKUP(service_state
, ServiceState
);
1902 static const char* const service_restart_table
[_SERVICE_RESTART_MAX
] = {
1903 [SERVICE_ONCE
] = "once",
1904 [SERVICE_RESTART_ON_SUCCESS
] = "restart-on-success",
1905 [SERVICE_RESTART_ALWAYS
] = "restart-on-failure",
1908 DEFINE_STRING_TABLE_LOOKUP(service_restart
, ServiceRestart
);
1910 static const char* const service_type_table
[_SERVICE_TYPE_MAX
] = {
1911 [SERVICE_FORKING
] = "forking",
1912 [SERVICE_SIMPLE
] = "simple",
1913 [SERVICE_FINISH
] = "finish"
1916 DEFINE_STRING_TABLE_LOOKUP(service_type
, ServiceType
);
1918 static const char* const service_exec_command_table
[_SERVICE_EXEC_MAX
] = {
1919 [SERVICE_EXEC_START_PRE
] = "ExecStartPre",
1920 [SERVICE_EXEC_START
] = "ExecStart",
1921 [SERVICE_EXEC_START_POST
] = "ExecStartPost",
1922 [SERVICE_EXEC_RELOAD
] = "ExecReload",
1923 [SERVICE_EXEC_STOP
] = "ExecStop",
1924 [SERVICE_EXEC_STOP_POST
] = "ExecStopPost",
1927 DEFINE_STRING_TABLE_LOOKUP(service_exec_command
, ServiceExecCommand
);
1929 const UnitVTable service_vtable
= {
1930 .suffix
= ".service",
1932 .init
= service_init
,
1933 .done
= service_done
,
1935 .dump
= service_dump
,
1937 .start
= service_start
,
1938 .stop
= service_stop
,
1939 .reload
= service_reload
,
1941 .can_reload
= service_can_reload
,
1943 .active_state
= service_active_state
,
1945 .sigchld_event
= service_sigchld_event
,
1946 .timer_event
= service_timer_event
,
1948 .cgroup_notify_empty
= service_cgroup_notify_event
,
1950 .enumerate
= service_enumerate