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"
33 #include "unit-name.h"
34 #include "dbus-service.h"
36 #define COMMENTS "#;\n"
37 #define NEWLINES "\n\r"
40 typedef enum RunlevelType
{
49 const RunlevelType type
;
51 /* Standard SysV runlevels */
52 { "rc0.d", SPECIAL_RUNLEVEL0_TARGET
, RUNLEVEL_DOWN
},
53 { "rc1.d", SPECIAL_RUNLEVEL1_TARGET
, RUNLEVEL_UP
},
54 { "rc2.d", SPECIAL_RUNLEVEL2_TARGET
, RUNLEVEL_UP
},
55 { "rc3.d", SPECIAL_RUNLEVEL3_TARGET
, RUNLEVEL_UP
},
56 { "rc4.d", SPECIAL_RUNLEVEL4_TARGET
, RUNLEVEL_UP
},
57 { "rc5.d", SPECIAL_RUNLEVEL5_TARGET
, RUNLEVEL_UP
},
58 { "rc6.d", SPECIAL_RUNLEVEL6_TARGET
, RUNLEVEL_DOWN
},
60 /* SUSE style boot.d */
61 { "boot.d", SPECIAL_SYSINIT_TARGET
, RUNLEVEL_SYSINIT
},
63 /* Debian style rcS.d */
64 { "rcS.d", SPECIAL_SYSINIT_TARGET
, RUNLEVEL_SYSINIT
},
67 #define RUNLEVELS_UP "12345"
68 /* #define RUNLEVELS_DOWN "06" */
69 /* #define RUNLEVELS_BOOT "bBsS" */
71 static const UnitActiveState state_translation_table
[_SERVICE_STATE_MAX
] = {
72 [SERVICE_DEAD
] = UNIT_INACTIVE
,
73 [SERVICE_START_PRE
] = UNIT_ACTIVATING
,
74 [SERVICE_START
] = UNIT_ACTIVATING
,
75 [SERVICE_START_POST
] = UNIT_ACTIVATING
,
76 [SERVICE_RUNNING
] = UNIT_ACTIVE
,
77 [SERVICE_EXITED
] = UNIT_ACTIVE
,
78 [SERVICE_RELOAD
] = UNIT_ACTIVE_RELOADING
,
79 [SERVICE_STOP
] = UNIT_DEACTIVATING
,
80 [SERVICE_STOP_SIGTERM
] = UNIT_DEACTIVATING
,
81 [SERVICE_STOP_SIGKILL
] = UNIT_DEACTIVATING
,
82 [SERVICE_STOP_POST
] = UNIT_DEACTIVATING
,
83 [SERVICE_FINAL_SIGTERM
] = UNIT_DEACTIVATING
,
84 [SERVICE_FINAL_SIGKILL
] = UNIT_DEACTIVATING
,
85 [SERVICE_MAINTENANCE
] = UNIT_INACTIVE
,
86 [SERVICE_AUTO_RESTART
] = UNIT_ACTIVATING
,
89 static void service_init(Unit
*u
) {
90 Service
*s
= SERVICE(u
);
93 assert(u
->meta
.load_state
== UNIT_STUB
);
95 s
->timeout_usec
= DEFAULT_TIMEOUT_USEC
;
96 s
->restart_usec
= DEFAULT_RESTART_USEC
;
97 s
->timer_watch
.type
= WATCH_INVALID
;
98 s
->sysv_start_priority
= -1;
101 exec_context_init(&s
->exec_context
);
103 RATELIMIT_INIT(s
->ratelimit
, 10*USEC_PER_SEC
, 5);
105 s
->control_command_id
= _SERVICE_EXEC_COMMAND_INVALID
;
108 static void service_unwatch_control_pid(Service
*s
) {
111 if (s
->control_pid
<= 0)
114 unit_unwatch_pid(UNIT(s
), s
->control_pid
);
118 static void service_unwatch_main_pid(Service
*s
) {
121 if (s
->main_pid
<= 0)
124 unit_unwatch_pid(UNIT(s
), s
->main_pid
);
128 static void service_close_socket_fd(Service
*s
) {
131 if (s
->socket_fd
< 0)
134 close_nointr_nofail(s
->socket_fd
);
138 static void service_done(Unit
*u
) {
139 Service
*s
= SERVICE(u
);
149 free(s
->sysv_runlevels
);
150 s
->sysv_runlevels
= NULL
;
152 free(s
->status_text
);
153 s
->status_text
= NULL
;
155 exec_context_done(&s
->exec_context
);
156 exec_command_free_array(s
->exec_command
, _SERVICE_EXEC_COMMAND_MAX
);
157 s
->control_command
= NULL
;
159 /* This will leak a process, but at least no memory or any of
161 service_unwatch_main_pid(s
);
162 service_unwatch_control_pid(s
);
165 unit_unwatch_bus_name(UNIT(u
), s
->bus_name
);
170 service_close_socket_fd(s
);
172 unit_unwatch_timer(u
, &s
->timer_watch
);
175 static char *sysv_translate_name(const char *name
) {
178 if (!(r
= new(char, strlen(name
) + sizeof(".service"))))
181 if (startswith(name
, "boot."))
182 /* Drop SuSE-style boot. prefix */
183 strcpy(stpcpy(r
, name
+ 5), ".service");
184 else if (endswith(name
, ".sh"))
185 /* Drop Debian-style .sh suffix */
186 strcpy(stpcpy(r
, name
) - 3, ".service");
188 /* Normal init scripts */
189 strcpy(stpcpy(r
, name
), ".service");
194 static int sysv_translate_facility(const char *name
, char **_r
) {
196 static const char * const table
[] = {
197 /* LSB defined facilities */
198 "$local_fs", SPECIAL_LOCAL_FS_TARGET
,
199 "$network", SPECIAL_NETWORK_TARGET
,
200 "$named", SPECIAL_NSS_LOOKUP_TARGET
,
201 "$portmap", SPECIAL_RPCBIND_TARGET
,
202 "$remote_fs", SPECIAL_REMOTE_FS_TARGET
,
203 "$syslog", SPECIAL_SYSLOG_TARGET
,
204 "$time", SPECIAL_RTC_SET_TARGET
,
206 /* Debian extensions */
207 "$mail-transport-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET
,
208 "$mail-transfer-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET
,
209 "$x-display-manager", SPECIAL_DISPLAY_MANAGER_SERVICE
215 for (i
= 0; i
< ELEMENTSOF(table
); i
+= 2)
216 if (streq(table
[i
], name
)) {
217 if (!(r
= strdup(table
[i
+1])))
226 if (!(r
= sysv_translate_name(name
)))
237 static int sysv_fix_order(Service
*s
) {
243 if (s
->sysv_start_priority
< 0)
246 /* For each pair of services where at least one lacks a LSB
247 * header, we use the start priority value to order things. */
249 LIST_FOREACH(units_per_type
, other
, UNIT(s
)->meta
.manager
->units_per_type
[UNIT_SERVICE
]) {
253 t
= (Service
*) other
;
258 if (t
->sysv_start_priority
< 0)
261 /* If both units have modern headers we don't care
262 * about the priorities */
263 if ((!s
->sysv_path
|| s
->sysv_has_lsb
) &&
264 (!t
->sysv_path
|| t
->sysv_has_lsb
))
267 if (t
->sysv_start_priority
< s
->sysv_start_priority
)
269 else if (t
->sysv_start_priority
> s
->sysv_start_priority
)
274 /* FIXME: Maybe we should compare the name here lexicographically? */
276 if (!(r
= unit_add_dependency(UNIT(s
), d
, UNIT(t
), true)) < 0)
283 static ExecCommand
*exec_command_new(const char *path
, const char *arg1
) {
286 if (!(c
= new0(ExecCommand
, 1)))
289 if (!(c
->path
= strdup(path
))) {
294 if (!(c
->argv
= strv_new(path
, arg1
, NULL
))) {
303 static int sysv_exec_commands(Service
*s
) {
307 assert(s
->sysv_path
);
309 if (!(c
= exec_command_new(s
->sysv_path
, "start")))
311 exec_command_append_list(s
->exec_command
+SERVICE_EXEC_START
, c
);
313 if (!(c
= exec_command_new(s
->sysv_path
, "stop")))
315 exec_command_append_list(s
->exec_command
+SERVICE_EXEC_STOP
, c
);
317 if (!(c
= exec_command_new(s
->sysv_path
, "reload")))
319 exec_command_append_list(s
->exec_command
+SERVICE_EXEC_RELOAD
, c
);
324 static int service_load_sysv_path(Service
*s
, const char *path
) {
341 if (!(f
= fopen(path
, "re"))) {
342 r
= errno
== ENOENT
? 0 : -errno
;
347 if (!(s
->sysv_path
= strdup(path
))) {
353 char l
[LINE_MAX
], *t
;
355 if (!fgets(l
, sizeof(l
), f
)) {
360 log_error("Failed to read configuration file '%s': %s", path
, strerror(-r
));
370 if (state
== NORMAL
&& streq(t
, "### BEGIN INIT INFO")) {
372 s
->sysv_has_lsb
= true;
376 if ((state
== LSB_DESCRIPTION
|| state
== LSB
) && streq(t
, "### END INIT INFO")) {
382 t
+= strspn(t
, WHITESPACE
);
384 if (state
== NORMAL
) {
386 /* Try to parse Red Hat style chkconfig headers */
388 if (startswith_no_case(t
, "chkconfig:")) {
390 char runlevels
[16], *k
;
394 if (sscanf(t
+10, "%15s %i %*i",
396 &start_priority
) != 2) {
398 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path
, line
);
402 /* A start priority gathered from the
403 * symlink farms is preferred over the
404 * data from the LSB header. */
405 if (start_priority
< 0 || start_priority
> 99)
406 log_warning("[%s:%u] Start priority out of range. Ignoring.", path
, line
);
407 else if (s
->sysv_start_priority
< 0)
408 s
->sysv_start_priority
= start_priority
;
410 char_array_0(runlevels
);
411 k
= delete_chars(runlevels
, WHITESPACE
"-");
416 if (!(d
= strdup(k
))) {
421 free(s
->sysv_runlevels
);
422 s
->sysv_runlevels
= d
;
425 } else if (startswith_no_case(t
, "description:")) {
427 size_t k
= strlen(t
);
430 if (t
[k
-1] == '\\') {
435 if (!(d
= strdup(strstrip(t
+12)))) {
440 free(u
->meta
.description
);
441 u
->meta
.description
= d
;
443 } else if (startswith_no_case(t
, "pidfile:")) {
450 if (!path_is_absolute(fn
)) {
451 log_warning("[%s:%u] PID file not absolute. Ignoring.", path
, line
);
455 if (!(fn
= strdup(fn
))) {
464 } else if (state
== DESCRIPTION
) {
466 /* Try to parse Red Hat style description
469 size_t k
= strlen(t
);
477 assert(u
->meta
.description
);
478 if (asprintf(&d
, "%s %s", u
->meta
.description
, strstrip(t
)) < 0) {
483 free(u
->meta
.description
);
484 u
->meta
.description
= d
;
486 } else if (state
== LSB
|| state
== LSB_DESCRIPTION
) {
488 if (startswith_no_case(t
, "Provides:")) {
494 FOREACH_WORD(w
, z
, t
+9, i
) {
497 if (!(n
= strndup(w
, z
))) {
502 r
= sysv_translate_facility(n
, &m
);
511 if (unit_name_to_type(m
) == UNIT_SERVICE
)
512 r
= unit_add_name(u
, m
);
514 if ((r
= unit_add_dependency_by_name_inverse(u
, UNIT_REQUIRES
, m
, NULL
, true)) >= 0)
515 r
= unit_add_dependency_by_name(u
, UNIT_BEFORE
, m
, NULL
, true);
524 } else if (startswith_no_case(t
, "Required-Start:") ||
525 startswith_no_case(t
, "Should-Start:") ||
526 startswith_no_case(t
, "X-Start-Before:") ||
527 startswith_no_case(t
, "X-Start-After:")) {
533 FOREACH_WORD(w
, z
, strchr(t
, ':')+1, i
) {
536 if (!(n
= strndup(w
, z
))) {
541 r
= sysv_translate_facility(n
, &m
);
550 r
= unit_add_dependency_by_name(u
, startswith_no_case(t
, "X-Start-Before:") ? UNIT_BEFORE
: UNIT_AFTER
, m
, NULL
, true);
556 } else if (startswith_no_case(t
, "Default-Start:")) {
561 k
= delete_chars(t
+14, WHITESPACE
"-");
564 if (!(d
= strdup(k
))) {
569 free(s
->sysv_runlevels
);
570 s
->sysv_runlevels
= d
;
573 } else if (startswith_no_case(t
, "Description:")) {
576 state
= LSB_DESCRIPTION
;
578 if (!(d
= strdup(strstrip(t
+12)))) {
583 free(u
->meta
.description
);
584 u
->meta
.description
= d
;
586 } else if (startswith_no_case(t
, "Short-Description:") &&
587 !u
->meta
.description
) {
590 /* We use the short description only
591 * if no long description is set. */
595 if (!(d
= strdup(strstrip(t
+18)))) {
600 u
->meta
.description
= d
;
602 } else if (startswith_no_case(t
, "X-Interactive:")) {
605 if ((b
= parse_boolean(strstrip(t
+14))) < 0) {
606 log_warning("[%s:%u] Couldn't parse interactive flag. Ignoring.", path
, line
);
611 s
->exec_context
.std_input
= EXEC_INPUT_TTY
;
613 s
->exec_context
.std_input
= EXEC_INPUT_NULL
;
615 } else if (state
== LSB_DESCRIPTION
) {
617 if (startswith(l
, "#\t") || startswith(l
, "# ")) {
620 assert(u
->meta
.description
);
621 if (asprintf(&d
, "%s %s", u
->meta
.description
, t
) < 0) {
626 free(u
->meta
.description
);
627 u
->meta
.description
= d
;
634 if ((r
= sysv_exec_commands(s
)) < 0)
637 if (!s
->sysv_runlevels
|| chars_intersect(RUNLEVELS_UP
, s
->sysv_runlevels
)) {
638 /* If there a runlevels configured for this service
639 * but none of the standard ones, then we assume this
640 * is some special kind of service (which might be
641 * needed for early boot) and don't create any links
644 if ((r
= unit_add_dependency_by_name(u
, UNIT_REQUIRES
, SPECIAL_BASIC_TARGET
, NULL
, true)) < 0 ||
645 (r
= unit_add_dependency_by_name(u
, UNIT_AFTER
, SPECIAL_BASIC_TARGET
, NULL
, true)) < 0)
649 /* Don't timeout special services during boot (like fsck) */
652 /* Special setting for all SysV services */
653 s
->type
= SERVICE_FORKING
;
654 s
->valid_no_process
= true;
655 s
->kill_mode
= KILL_PROCESS_GROUP
;
656 s
->restart
= SERVICE_ONCE
;
658 u
->meta
.load_state
= UNIT_LOADED
;
669 static int service_load_sysv_name(Service
*s
, const char *name
) {
675 /* For SysV services we strip the boot. or .sh
676 * prefixes/suffixes. */
677 if (startswith(name
, "boot.") ||
678 endswith(name
, ".sh.service"))
681 STRV_FOREACH(p
, UNIT(s
)->meta
.manager
->lookup_paths
.sysvinit_path
) {
685 if (asprintf(&path
, "%s/%s", *p
, name
) < 0)
688 assert(endswith(path
, ".service"));
689 path
[strlen(path
)-8] = 0;
691 r
= service_load_sysv_path(s
, path
);
693 if (r
>= 0 && UNIT(s
)->meta
.load_state
== UNIT_STUB
) {
694 /* Try Debian style xxx.sh source'able init scripts */
696 r
= service_load_sysv_path(s
, path
);
701 if (r
>= 0 && UNIT(s
)->meta
.load_state
== UNIT_STUB
) {
702 /* Try SUSE style boot.xxx init scripts */
704 if (asprintf(&path
, "%s/boot.%s", *p
, name
) < 0)
707 path
[strlen(path
)-8] = 0;
708 r
= service_load_sysv_path(s
, path
);
715 if ((UNIT(s
)->meta
.load_state
!= UNIT_STUB
))
722 static int service_load_sysv(Service
*s
) {
729 /* Load service data from SysV init scripts, preferably with
732 if (strv_isempty(UNIT(s
)->meta
.manager
->lookup_paths
.sysvinit_path
))
735 if ((t
= UNIT(s
)->meta
.id
))
736 if ((r
= service_load_sysv_name(s
, t
)) < 0)
739 if (UNIT(s
)->meta
.load_state
== UNIT_STUB
)
740 SET_FOREACH(t
, UNIT(s
)->meta
.names
, i
) {
741 if (t
== UNIT(s
)->meta
.id
)
744 if ((r
== service_load_sysv_name(s
, t
)) < 0)
747 if (UNIT(s
)->meta
.load_state
!= UNIT_STUB
)
754 static int service_add_bus_name(Service
*s
) {
761 if (asprintf(&n
, "dbus-%s.service", s
->bus_name
) < 0)
764 r
= unit_merge_by_name(UNIT(s
), n
);
770 static int service_verify(Service
*s
) {
773 if (UNIT(s
)->meta
.load_state
!= UNIT_LOADED
)
776 if (!s
->exec_command
[SERVICE_EXEC_START
]) {
777 log_error("%s lacks ExecStart setting. Refusing.", UNIT(s
)->meta
.id
);
781 if (s
->type
== SERVICE_DBUS
&& !s
->bus_name
) {
782 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s
)->meta
.id
);
789 static int service_load(Unit
*u
) {
791 Service
*s
= SERVICE(u
);
795 /* Load a .service file */
796 if ((r
= unit_load_fragment(u
)) < 0)
799 /* Load a classic init script as a fallback, if we couldn't find anything */
800 if (u
->meta
.load_state
== UNIT_STUB
)
801 if ((r
= service_load_sysv(s
)) < 0)
804 /* Still nothing found? Then let's give up */
805 if (u
->meta
.load_state
== UNIT_STUB
)
808 /* We were able to load something, then let's add in the
809 * dropin directories. */
810 if ((r
= unit_load_dropin(unit_follow_merge(u
))) < 0)
813 /* This is a new unit? Then let's add in some extras */
814 if (u
->meta
.load_state
== UNIT_LOADED
) {
815 if ((r
= unit_add_exec_dependencies(u
, &s
->exec_context
)) < 0)
818 if ((r
= unit_add_default_cgroup(u
)) < 0)
821 if ((r
= sysv_fix_order(s
)) < 0)
825 if ((r
= service_add_bus_name(s
)) < 0)
828 if ((r
= unit_watch_bus_name(u
, s
->bus_name
)) < 0)
833 return service_verify(s
);
836 static void service_dump(Unit
*u
, FILE *f
, const char *prefix
) {
838 ServiceExecCommand c
;
839 Service
*s
= SERVICE(u
);
845 p2
= strappend(prefix
, "\t");
846 prefix2
= p2
? p2
: prefix
;
849 "%sService State: %s\n"
850 "%sPermissionsStartOnly: %s\n"
851 "%sRootDirectoryStartOnly: %s\n"
852 "%sValidNoProcess: %s\n"
855 prefix
, service_state_to_string(s
->state
),
856 prefix
, yes_no(s
->permissions_start_only
),
857 prefix
, yes_no(s
->root_directory_start_only
),
858 prefix
, yes_no(s
->valid_no_process
),
859 prefix
, kill_mode_to_string(s
->kill_mode
),
860 prefix
, service_type_to_string(s
->type
));
862 if (s
->control_pid
> 0)
864 "%sControl PID: %llu\n",
865 prefix
, (unsigned long long) s
->control_pid
);
869 "%sMain PID: %llu\n",
870 prefix
, (unsigned long long) s
->main_pid
);
875 prefix
, s
->pid_file
);
880 "%sBus Name Good: %s\n",
882 prefix
, yes_no(s
->bus_name_good
));
884 exec_context_dump(&s
->exec_context
, f
, prefix
);
886 for (c
= 0; c
< _SERVICE_EXEC_COMMAND_MAX
; c
++) {
888 if (!s
->exec_command
[c
])
891 fprintf(f
, "%s-> %s:\n",
892 prefix
, service_exec_command_to_string(c
));
894 exec_command_dump_list(s
->exec_command
[c
], f
, prefix2
);
899 "%sSysV Init Script Path: %s\n"
900 "%sSysV Init Script has LSB Header: %s\n",
901 prefix
, s
->sysv_path
,
902 prefix
, yes_no(s
->sysv_has_lsb
));
904 if (s
->sysv_start_priority
>= 0)
906 "%sSysVStartPriority: %i\n",
907 prefix
, s
->sysv_start_priority
);
909 if (s
->sysv_runlevels
)
910 fprintf(f
, "%sSysVRunLevels: %s\n",
911 prefix
, s
->sysv_runlevels
);
914 fprintf(f
, "%sStatus Text: %s\n",
915 prefix
, s
->status_text
);
920 static int service_load_pid_file(Service
*s
) {
927 if (s
->main_pid_known
)
930 assert(s
->main_pid
<= 0);
935 if ((r
= read_one_line_file(s
->pid_file
, &k
)) < 0)
938 if ((r
= safe_atolu(k
, &p
)) < 0) {
943 if ((unsigned long) (pid_t
) p
!= p
)
949 if (kill((pid_t
) p
, 0) < 0 && errno
!= EPERM
) {
950 log_warning("PID %llu read from file %s does not exist. Your service or init script might be broken.",
951 (unsigned long long) p
, s
->pid_file
);
955 if ((r
= unit_watch_pid(UNIT(s
), (pid_t
) p
)) < 0)
956 /* FIXME: we need to do something here */
959 s
->main_pid
= (pid_t
) p
;
960 s
->main_pid_known
= true;
965 static int service_get_sockets(Service
*s
, Set
**_set
) {
974 /* Collects all Socket objects that belong to this
975 * service. Note that a service might have multiple sockets
976 * via multiple names. */
978 if (!(set
= set_new(NULL
, NULL
)))
981 SET_FOREACH(t
, UNIT(s
)->meta
.names
, i
) {
985 /* Look for all socket objects that go by any of our
986 * units and collect their fds */
988 if (!(k
= unit_name_change_suffix(t
, ".socket"))) {
993 p
= manager_get_unit(UNIT(s
)->meta
.manager
, k
);
999 if ((r
= set_put(set
, p
)) < 0)
1011 static int service_notify_sockets_dead(Service
*s
) {
1019 /* Notifies all our sockets when we die */
1020 if ((r
= service_get_sockets(s
, &set
)) < 0)
1023 SET_FOREACH(sock
, set
, i
)
1024 socket_notify_service_dead(sock
);
1031 static void service_set_state(Service
*s
, ServiceState state
) {
1032 ServiceState old_state
;
1035 old_state
= s
->state
;
1038 if (state
!= SERVICE_START_PRE
&&
1039 state
!= SERVICE_START
&&
1040 state
!= SERVICE_START_POST
&&
1041 state
!= SERVICE_RELOAD
&&
1042 state
!= SERVICE_STOP
&&
1043 state
!= SERVICE_STOP_SIGTERM
&&
1044 state
!= SERVICE_STOP_SIGKILL
&&
1045 state
!= SERVICE_STOP_POST
&&
1046 state
!= SERVICE_FINAL_SIGTERM
&&
1047 state
!= SERVICE_FINAL_SIGKILL
&&
1048 state
!= SERVICE_AUTO_RESTART
)
1049 unit_unwatch_timer(UNIT(s
), &s
->timer_watch
);
1051 if (state
!= SERVICE_START
&&
1052 state
!= SERVICE_START_POST
&&
1053 state
!= SERVICE_RUNNING
&&
1054 state
!= SERVICE_RELOAD
&&
1055 state
!= SERVICE_STOP
&&
1056 state
!= SERVICE_STOP_SIGTERM
&&
1057 state
!= SERVICE_STOP_SIGKILL
)
1058 service_unwatch_main_pid(s
);
1060 if (state
!= SERVICE_START_PRE
&&
1061 state
!= SERVICE_START
&&
1062 state
!= SERVICE_START_POST
&&
1063 state
!= SERVICE_RELOAD
&&
1064 state
!= SERVICE_STOP
&&
1065 state
!= SERVICE_STOP_SIGTERM
&&
1066 state
!= SERVICE_STOP_SIGKILL
&&
1067 state
!= SERVICE_STOP_POST
&&
1068 state
!= SERVICE_FINAL_SIGTERM
&&
1069 state
!= SERVICE_FINAL_SIGKILL
) {
1070 service_unwatch_control_pid(s
);
1071 s
->control_command
= NULL
;
1072 s
->control_command_id
= _SERVICE_EXEC_COMMAND_INVALID
;
1075 if (state
== SERVICE_DEAD
||
1076 state
== SERVICE_STOP
||
1077 state
== SERVICE_STOP_SIGTERM
||
1078 state
== SERVICE_STOP_SIGKILL
||
1079 state
== SERVICE_STOP_POST
||
1080 state
== SERVICE_FINAL_SIGTERM
||
1081 state
== SERVICE_FINAL_SIGKILL
||
1082 state
== SERVICE_MAINTENANCE
||
1083 state
== SERVICE_AUTO_RESTART
)
1084 service_notify_sockets_dead(s
);
1086 if (state
!= SERVICE_START_PRE
&&
1087 state
!= SERVICE_START
&&
1088 !(state
== SERVICE_DEAD
&& UNIT(s
)->meta
.job
))
1089 service_close_socket_fd(s
);
1091 if (old_state
!= state
)
1092 log_debug("%s changed %s -> %s", UNIT(s
)->meta
.id
, service_state_to_string(old_state
), service_state_to_string(state
));
1094 unit_notify(UNIT(s
), state_translation_table
[old_state
], state_translation_table
[state
]);
1097 static int service_coldplug(Unit
*u
) {
1098 Service
*s
= SERVICE(u
);
1102 assert(s
->state
== SERVICE_DEAD
);
1104 if (s
->deserialized_state
!= s
->state
) {
1106 if (s
->deserialized_state
== SERVICE_START_PRE
||
1107 s
->deserialized_state
== SERVICE_START
||
1108 s
->deserialized_state
== SERVICE_START_POST
||
1109 s
->deserialized_state
== SERVICE_RELOAD
||
1110 s
->deserialized_state
== SERVICE_STOP
||
1111 s
->deserialized_state
== SERVICE_STOP_SIGTERM
||
1112 s
->deserialized_state
== SERVICE_STOP_SIGKILL
||
1113 s
->deserialized_state
== SERVICE_STOP_POST
||
1114 s
->deserialized_state
== SERVICE_FINAL_SIGTERM
||
1115 s
->deserialized_state
== SERVICE_FINAL_SIGKILL
||
1116 s
->deserialized_state
== SERVICE_AUTO_RESTART
) {
1118 if (s
->deserialized_state
== SERVICE_AUTO_RESTART
|| s
->timeout_usec
> 0) {
1121 k
= s
->deserialized_state
== SERVICE_AUTO_RESTART
? s
->restart_usec
: s
->timeout_usec
;
1123 if ((r
= unit_watch_timer(UNIT(s
), k
, &s
->timer_watch
)) < 0)
1128 if ((s
->deserialized_state
== SERVICE_START
&&
1129 (s
->type
== SERVICE_FORKING
||
1130 s
->type
== SERVICE_DBUS
||
1131 s
->type
== SERVICE_FINISH
||
1132 s
->type
== SERVICE_NOTIFY
)) ||
1133 s
->deserialized_state
== SERVICE_START_POST
||
1134 s
->deserialized_state
== SERVICE_RUNNING
||
1135 s
->deserialized_state
== SERVICE_RELOAD
||
1136 s
->deserialized_state
== SERVICE_STOP
||
1137 s
->deserialized_state
== SERVICE_STOP_SIGTERM
||
1138 s
->deserialized_state
== SERVICE_STOP_SIGKILL
)
1139 if (s
->main_pid
> 0)
1140 if ((r
= unit_watch_pid(UNIT(s
), s
->main_pid
)) < 0)
1143 if (s
->deserialized_state
== SERVICE_START_PRE
||
1144 s
->deserialized_state
== SERVICE_START
||
1145 s
->deserialized_state
== SERVICE_START_POST
||
1146 s
->deserialized_state
== SERVICE_RELOAD
||
1147 s
->deserialized_state
== SERVICE_STOP
||
1148 s
->deserialized_state
== SERVICE_STOP_SIGTERM
||
1149 s
->deserialized_state
== SERVICE_STOP_SIGKILL
||
1150 s
->deserialized_state
== SERVICE_STOP_POST
||
1151 s
->deserialized_state
== SERVICE_FINAL_SIGTERM
||
1152 s
->deserialized_state
== SERVICE_FINAL_SIGKILL
)
1153 if (s
->control_pid
> 0)
1154 if ((r
= unit_watch_pid(UNIT(s
), s
->control_pid
)) < 0)
1157 service_set_state(s
, s
->deserialized_state
);
1163 static int service_collect_fds(Service
*s
, int **fds
, unsigned *n_fds
) {
1167 unsigned rn_fds
= 0;
1175 if ((r
= service_get_sockets(s
, &set
)) < 0)
1178 SET_FOREACH(sock
, set
, i
) {
1182 if ((r
= socket_collect_fds(sock
, &cfds
, &cn_fds
)) < 0)
1194 if (!(t
= new(int, rn_fds
+cn_fds
))) {
1200 memcpy(t
, rfds
, rn_fds
);
1201 memcpy(t
+rn_fds
, cfds
, cn_fds
);
1206 rn_fds
= rn_fds
+cn_fds
;
1224 static int service_spawn(
1229 bool apply_permissions
,
1244 if (s
->socket_fd
>= 0) {
1245 fds
= &s
->socket_fd
;
1247 } else if ((r
= service_collect_fds(s
, &fds
, &n_fds
)) < 0)
1251 if (timeout
&& s
->timeout_usec
) {
1252 if ((r
= unit_watch_timer(UNIT(s
), s
->timeout_usec
, &s
->timer_watch
)) < 0)
1255 unit_unwatch_timer(UNIT(s
), &s
->timer_watch
);
1257 if (!(argv
= unit_full_printf_strv(UNIT(s
), c
->argv
))) {
1266 s
->meta
.manager
->environment
,
1269 UNIT(s
)->meta
.manager
->confirm_spawn
,
1270 UNIT(s
)->meta
.cgroup_bondings
,
1278 if (s
->socket_fd
>= 0)
1279 service_close_socket_fd(s
);
1284 if ((r
= unit_watch_pid(UNIT(s
), pid
)) < 0)
1285 /* FIXME: we need to do something here */
1296 unit_unwatch_timer(UNIT(s
), &s
->timer_watch
);
1301 static int main_pid_good(Service
*s
) {
1304 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1307 /* If we know the pid file, then lets just check if it is
1309 if (s
->main_pid_known
)
1310 return s
->main_pid
> 0;
1312 /* We don't know the pid */
1316 static int control_pid_good(Service
*s
) {
1319 return s
->control_pid
> 0;
1322 static int cgroup_good(Service
*s
) {
1327 if (s
->valid_no_process
)
1330 if ((r
= cgroup_bonding_is_empty_list(UNIT(s
)->meta
.cgroup_bondings
)) < 0)
1336 static void service_enter_dead(Service
*s
, bool success
, bool allow_restart
) {
1343 if (allow_restart
&&
1345 (s
->restart
== SERVICE_RESTART_ALWAYS
||
1346 (s
->restart
== SERVICE_RESTART_ON_SUCCESS
&& !s
->failure
))) {
1348 if ((r
= unit_watch_timer(UNIT(s
), s
->restart_usec
, &s
->timer_watch
)) < 0)
1351 service_set_state(s
, SERVICE_AUTO_RESTART
);
1353 service_set_state(s
, s
->failure
? SERVICE_MAINTENANCE
: SERVICE_DEAD
);
1358 log_warning("%s failed to run install restart timer: %s", UNIT(s
)->meta
.id
, strerror(-r
));
1359 service_enter_dead(s
, false, false);
1362 static void service_enter_signal(Service
*s
, ServiceState state
, bool success
);
1364 static void service_enter_stop_post(Service
*s
, bool success
) {
1371 service_unwatch_control_pid(s
);
1373 s
->control_command_id
= SERVICE_EXEC_STOP_POST
;
1374 if ((s
->control_command
= s
->exec_command
[SERVICE_EXEC_STOP_POST
])) {
1375 if ((r
= service_spawn(s
,
1379 !s
->permissions_start_only
,
1380 !s
->root_directory_start_only
,
1381 &s
->control_pid
)) < 0)
1385 service_set_state(s
, SERVICE_STOP_POST
);
1387 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, true);
1392 log_warning("%s failed to run 'stop-post' task: %s", UNIT(s
)->meta
.id
, strerror(-r
));
1393 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, false);
1396 static void service_enter_signal(Service
*s
, ServiceState state
, bool success
) {
1405 if (s
->kill_mode
!= KILL_NONE
) {
1406 int sig
= (state
== SERVICE_STOP_SIGTERM
|| state
== SERVICE_FINAL_SIGTERM
) ? SIGTERM
: SIGKILL
;
1408 if (s
->kill_mode
== KILL_CONTROL_GROUP
) {
1410 if ((r
= cgroup_bonding_kill_list(UNIT(s
)->meta
.cgroup_bondings
, sig
)) < 0) {
1411 if (r
!= -EAGAIN
&& r
!= -ESRCH
)
1420 if (s
->main_pid
> 0) {
1421 if (kill(s
->kill_mode
== KILL_PROCESS
? s
->main_pid
: -s
->main_pid
, sig
) < 0 && errno
!= ESRCH
)
1427 if (s
->control_pid
> 0) {
1428 if (kill(s
->kill_mode
== KILL_PROCESS
? s
->control_pid
: -s
->control_pid
, sig
) < 0 && errno
!= ESRCH
)
1439 if (sent
&& (s
->main_pid
> 0 || s
->control_pid
> 0)) {
1440 if (s
->timeout_usec
> 0)
1441 if ((r
= unit_watch_timer(UNIT(s
), s
->timeout_usec
, &s
->timer_watch
)) < 0)
1444 service_set_state(s
, state
);
1445 } else if (state
== SERVICE_STOP_SIGTERM
|| state
== SERVICE_STOP_SIGKILL
)
1446 service_enter_stop_post(s
, true);
1448 service_enter_dead(s
, true, true);
1453 log_warning("%s failed to kill processes: %s", UNIT(s
)->meta
.id
, strerror(-r
));
1455 if (state
== SERVICE_STOP_SIGTERM
|| state
== SERVICE_STOP_SIGKILL
)
1456 service_enter_stop_post(s
, false);
1458 service_enter_dead(s
, false, true);
1461 static void service_enter_stop(Service
*s
, bool success
) {
1468 service_unwatch_control_pid(s
);
1470 s
->control_command_id
= SERVICE_EXEC_STOP
;
1471 if ((s
->control_command
= s
->exec_command
[SERVICE_EXEC_STOP
])) {
1472 if ((r
= service_spawn(s
,
1476 !s
->permissions_start_only
,
1477 !s
->root_directory_start_only
,
1478 &s
->control_pid
)) < 0)
1481 service_set_state(s
, SERVICE_STOP
);
1483 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, true);
1488 log_warning("%s failed to run 'stop' task: %s", UNIT(s
)->meta
.id
, strerror(-r
));
1489 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, false);
1492 static void service_enter_running(Service
*s
, bool success
) {
1498 if (main_pid_good(s
) != 0 &&
1499 cgroup_good(s
) != 0 &&
1500 (s
->bus_name_good
|| s
->type
!= SERVICE_DBUS
))
1501 service_set_state(s
, SERVICE_RUNNING
);
1502 else if (s
->valid_no_process
)
1503 service_set_state(s
, SERVICE_EXITED
);
1505 service_enter_stop(s
, true);
1508 static void service_enter_start_post(Service
*s
) {
1512 service_unwatch_control_pid(s
);
1514 s
->control_command_id
= SERVICE_EXEC_START_POST
;
1515 if ((s
->control_command
= s
->exec_command
[SERVICE_EXEC_START_POST
])) {
1516 if ((r
= service_spawn(s
,
1520 !s
->permissions_start_only
,
1521 !s
->root_directory_start_only
,
1522 &s
->control_pid
)) < 0)
1526 service_set_state(s
, SERVICE_START_POST
);
1528 service_enter_running(s
, true);
1533 log_warning("%s failed to run 'start-post' task: %s", UNIT(s
)->meta
.id
, strerror(-r
));
1534 service_enter_stop(s
, false);
1537 static void service_enter_start(Service
*s
) {
1543 assert(s
->exec_command
[SERVICE_EXEC_START
]);
1544 assert(!s
->exec_command
[SERVICE_EXEC_START
]->command_next
);
1546 if (s
->type
== SERVICE_FORKING
)
1547 service_unwatch_control_pid(s
);
1549 service_unwatch_main_pid(s
);
1551 if ((r
= service_spawn(s
,
1552 s
->exec_command
[SERVICE_EXEC_START
],
1553 s
->type
== SERVICE_FORKING
|| s
->type
== SERVICE_DBUS
|| s
->type
== SERVICE_NOTIFY
,
1560 if (s
->type
== SERVICE_SIMPLE
) {
1561 /* For simple services we immediately start
1562 * the START_POST binaries. */
1565 s
->main_pid_known
= true;
1567 service_enter_start_post(s
);
1569 } else if (s
->type
== SERVICE_FORKING
) {
1571 /* For forking services we wait until the start
1572 * process exited. */
1574 s
->control_pid
= pid
;
1576 s
->control_command_id
= SERVICE_EXEC_START
;
1577 s
->control_command
= s
->exec_command
[SERVICE_EXEC_START
];
1578 service_set_state(s
, SERVICE_START
);
1580 } else if (s
->type
== SERVICE_FINISH
||
1581 s
->type
== SERVICE_DBUS
||
1582 s
->type
== SERVICE_NOTIFY
) {
1584 /* For finishing services we wait until the start
1585 * process exited, too, but it is our main process. */
1587 /* For D-Bus services we know the main pid right away,
1588 * but wait for the bus name to appear on the
1589 * bus. Notify services are similar. */
1592 s
->main_pid_known
= true;
1594 service_set_state(s
, SERVICE_START
);
1596 assert_not_reached("Unknown service type");
1601 log_warning("%s failed to run 'start' task: %s", UNIT(s
)->meta
.id
, strerror(-r
));
1602 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, false);
1605 static void service_enter_start_pre(Service
*s
) {
1610 service_unwatch_control_pid(s
);
1612 s
->control_command_id
= SERVICE_EXEC_START_PRE
;
1613 if ((s
->control_command
= s
->exec_command
[SERVICE_EXEC_START_PRE
])) {
1614 if ((r
= service_spawn(s
,
1618 !s
->permissions_start_only
,
1619 !s
->root_directory_start_only
,
1620 &s
->control_pid
)) < 0)
1623 service_set_state(s
, SERVICE_START_PRE
);
1625 service_enter_start(s
);
1630 log_warning("%s failed to run 'start-pre' task: %s", UNIT(s
)->meta
.id
, strerror(-r
));
1631 service_enter_dead(s
, false, true);
1634 static void service_enter_restart(Service
*s
) {
1638 service_enter_dead(s
, true, false);
1640 if ((r
= manager_add_job(UNIT(s
)->meta
.manager
, JOB_START
, UNIT(s
), JOB_FAIL
, false, NULL
)) < 0)
1643 log_debug("%s scheduled restart job.", UNIT(s
)->meta
.id
);
1648 log_warning("%s failed to schedule restart job: %s", UNIT(s
)->meta
.id
, strerror(-r
));
1649 service_enter_dead(s
, false, false);
1652 static void service_enter_reload(Service
*s
) {
1657 service_unwatch_control_pid(s
);
1659 s
->control_command_id
= SERVICE_EXEC_RELOAD
;
1660 if ((s
->control_command
= s
->exec_command
[SERVICE_EXEC_RELOAD
])) {
1661 if ((r
= service_spawn(s
,
1665 !s
->permissions_start_only
,
1666 !s
->root_directory_start_only
,
1667 &s
->control_pid
)) < 0)
1670 service_set_state(s
, SERVICE_RELOAD
);
1672 service_enter_running(s
, true);
1677 log_warning("%s failed to run 'reload' task: %s", UNIT(s
)->meta
.id
, strerror(-r
));
1678 service_enter_stop(s
, false);
1681 static void service_run_next(Service
*s
, bool success
) {
1685 assert(s
->control_command
);
1686 assert(s
->control_command
->command_next
);
1691 s
->control_command
= s
->control_command
->command_next
;
1693 service_unwatch_control_pid(s
);
1695 if ((r
= service_spawn(s
,
1699 !s
->permissions_start_only
,
1700 !s
->root_directory_start_only
,
1701 &s
->control_pid
)) < 0)
1707 log_warning("%s failed to run spawn next task: %s", UNIT(s
)->meta
.id
, strerror(-r
));
1709 if (s
->state
== SERVICE_START_PRE
)
1710 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, false);
1711 else if (s
->state
== SERVICE_STOP
)
1712 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, false);
1713 else if (s
->state
== SERVICE_STOP_POST
)
1714 service_enter_dead(s
, false, true);
1716 service_enter_stop(s
, false);
1719 static int service_start(Unit
*u
) {
1720 Service
*s
= SERVICE(u
);
1724 /* We cannot fulfill this request right now, try again later
1726 if (s
->state
== SERVICE_STOP
||
1727 s
->state
== SERVICE_STOP_SIGTERM
||
1728 s
->state
== SERVICE_STOP_SIGKILL
||
1729 s
->state
== SERVICE_STOP_POST
||
1730 s
->state
== SERVICE_FINAL_SIGTERM
||
1731 s
->state
== SERVICE_FINAL_SIGKILL
)
1734 /* Already on it! */
1735 if (s
->state
== SERVICE_START_PRE
||
1736 s
->state
== SERVICE_START
||
1737 s
->state
== SERVICE_START_POST
)
1740 assert(s
->state
== SERVICE_DEAD
|| s
->state
== SERVICE_MAINTENANCE
|| s
->state
== SERVICE_AUTO_RESTART
);
1742 /* Make sure we don't enter a busy loop of some kind. */
1743 if (!ratelimit_test(&s
->ratelimit
)) {
1744 log_warning("%s start request repeated too quickly, refusing to start.", u
->meta
.id
);
1749 s
->main_pid_known
= false;
1750 s
->allow_restart
= true;
1752 service_enter_start_pre(s
);
1756 static int service_stop(Unit
*u
) {
1757 Service
*s
= SERVICE(u
);
1761 /* Cannot do this now */
1762 if (s
->state
== SERVICE_START_PRE
||
1763 s
->state
== SERVICE_START
||
1764 s
->state
== SERVICE_START_POST
||
1765 s
->state
== SERVICE_RELOAD
)
1769 if (s
->state
== SERVICE_STOP
||
1770 s
->state
== SERVICE_STOP_SIGTERM
||
1771 s
->state
== SERVICE_STOP_SIGKILL
||
1772 s
->state
== SERVICE_STOP_POST
||
1773 s
->state
== SERVICE_FINAL_SIGTERM
||
1774 s
->state
== SERVICE_FINAL_SIGKILL
)
1777 if (s
->state
== SERVICE_AUTO_RESTART
) {
1778 service_set_state(s
, SERVICE_DEAD
);
1782 assert(s
->state
== SERVICE_RUNNING
|| s
->state
== SERVICE_EXITED
);
1784 /* This is a user request, so don't do restarts on this
1786 s
->allow_restart
= false;
1788 service_enter_stop(s
, true);
1792 static int service_reload(Unit
*u
) {
1793 Service
*s
= SERVICE(u
);
1797 assert(s
->state
== SERVICE_RUNNING
|| s
->state
== SERVICE_EXITED
);
1799 service_enter_reload(s
);
1803 static bool service_can_reload(Unit
*u
) {
1804 Service
*s
= SERVICE(u
);
1808 return !!s
->exec_command
[SERVICE_EXEC_RELOAD
];
1811 static int service_serialize(Unit
*u
, FILE *f
, FDSet
*fds
) {
1812 Service
*s
= SERVICE(u
);
1818 unit_serialize_item(u
, f
, "state", service_state_to_string(s
->state
));
1819 unit_serialize_item(u
, f
, "failure", yes_no(s
->failure
));
1821 if (s
->control_pid
> 0)
1822 unit_serialize_item_format(u
, f
, "control-pid", "%u", (unsigned) (s
->control_pid
));
1824 if (s
->main_pid
> 0)
1825 unit_serialize_item_format(u
, f
, "main-pid", "%u", (unsigned) (s
->main_pid
));
1827 unit_serialize_item(u
, f
, "main-pid-known", yes_no(s
->main_pid_known
));
1829 /* There's a minor uncleanliness here: if there are multiple
1830 * commands attached here, we will start from the first one
1832 if (s
->control_command_id
>= 0)
1833 unit_serialize_item(u
, f
, "control-command", service_exec_command_to_string(s
->control_command_id
));
1835 if (s
->socket_fd
>= 0) {
1838 if ((copy
= fdset_put_dup(fds
, s
->socket_fd
)) < 0)
1841 unit_serialize_item_format(u
, f
, "socket-fd", "%i", copy
);
1847 static int service_deserialize_item(Unit
*u
, const char *key
, const char *value
, FDSet
*fds
) {
1848 Service
*s
= SERVICE(u
);
1856 if (streq(key
, "state")) {
1859 if ((state
= service_state_from_string(value
)) < 0)
1860 log_debug("Failed to parse state value %s", value
);
1862 s
->deserialized_state
= state
;
1863 } else if (streq(key
, "failure")) {
1866 if ((b
= parse_boolean(value
)) < 0)
1867 log_debug("Failed to parse failure value %s", value
);
1869 s
->failure
= b
|| s
->failure
;
1870 } else if (streq(key
, "control-pid")) {
1873 if ((r
= safe_atou(value
, &pid
)) < 0 || pid
<= 0)
1874 log_debug("Failed to parse control-pid value %s", value
);
1876 s
->control_pid
= (pid_t
) pid
;
1877 } else if (streq(key
, "main-pid")) {
1880 if ((r
= safe_atou(value
, &pid
)) < 0 || pid
<= 0)
1881 log_debug("Failed to parse main-pid value %s", value
);
1883 s
->main_pid
= (pid_t
) pid
;
1884 } else if (streq(key
, "main-pid-known")) {
1887 if ((b
= parse_boolean(value
)) < 0)
1888 log_debug("Failed to parse main-pid-known value %s", value
);
1890 s
->main_pid_known
= b
;
1891 } else if (streq(key
, "control-command")) {
1892 ServiceExecCommand id
;
1894 if ((id
= service_exec_command_from_string(value
)) < 0)
1895 log_debug("Failed to parse exec-command value %s", value
);
1897 s
->control_command_id
= id
;
1898 s
->control_command
= s
->exec_command
[id
];
1900 } else if (streq(key
, "socket-fd")) {
1903 if (safe_atoi(value
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
1904 log_debug("Failed to parse socket-fd value %s", value
);
1907 if (s
->socket_fd
>= 0)
1908 close_nointr_nofail(s
->socket_fd
);
1909 s
->socket_fd
= fdset_remove(fds
, fd
);
1912 log_debug("Unknown serialization key '%s'", key
);
1917 static UnitActiveState
service_active_state(Unit
*u
) {
1920 return state_translation_table
[SERVICE(u
)->state
];
1923 static const char *service_sub_state_to_string(Unit
*u
) {
1926 return service_state_to_string(SERVICE(u
)->state
);
1929 static bool service_check_gc(Unit
*u
) {
1930 Service
*s
= SERVICE(u
);
1934 return !!s
->sysv_path
;
1937 static bool service_check_snapshot(Unit
*u
) {
1938 Service
*s
= SERVICE(u
);
1942 return !s
->got_socket_fd
;
1945 static void service_sigchld_event(Unit
*u
, pid_t pid
, int code
, int status
) {
1946 Service
*s
= SERVICE(u
);
1952 success
= is_clean_exit(code
, status
);
1953 s
->failure
= s
->failure
|| !success
;
1955 if (s
->main_pid
== pid
) {
1957 exec_status_fill(&s
->main_exec_status
, pid
, code
, status
);
1960 if (s
->type
!= SERVICE_FORKING
) {
1961 assert(s
->exec_command
[SERVICE_EXEC_START
]);
1962 s
->exec_command
[SERVICE_EXEC_START
]->exec_status
= s
->main_exec_status
;
1965 log_debug("%s: main process exited, code=%s, status=%i", u
->meta
.id
, sigchld_code_to_string(code
), status
);
1967 /* The service exited, so the service is officially
1972 case SERVICE_START_POST
:
1973 case SERVICE_RELOAD
:
1975 /* Need to wait until the operation is
1980 if (s
->type
== SERVICE_FINISH
) {
1981 /* This was our main goal, so let's go on */
1983 service_enter_start_post(s
);
1985 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, false);
1988 assert(s
->type
== SERVICE_DBUS
|| s
->type
== SERVICE_NOTIFY
);
1993 case SERVICE_RUNNING
:
1994 service_enter_running(s
, success
);
1997 case SERVICE_STOP_SIGTERM
:
1998 case SERVICE_STOP_SIGKILL
:
2000 if (!control_pid_good(s
))
2001 service_enter_stop_post(s
, success
);
2003 /* If there is still a control process, wait for that first */
2007 assert_not_reached("Uh, main process died at wrong time.");
2010 } else if (s
->control_pid
== pid
) {
2012 if (s
->control_command
)
2013 exec_status_fill(&s
->control_command
->exec_status
, pid
, code
, status
);
2017 log_debug("%s: control process exited, code=%s status=%i", u
->meta
.id
, sigchld_code_to_string(code
), status
);
2019 /* If we are shutting things down anyway we
2020 * don't care about failing commands. */
2022 if (s
->control_command
&& s
->control_command
->command_next
&& success
) {
2024 /* There is another command to *
2025 * execute, so let's do that. */
2027 log_debug("%s running next command for state %s", u
->meta
.id
, service_state_to_string(s
->state
));
2028 service_run_next(s
, success
);
2031 /* No further commands for this step, so let's
2032 * figure out what to do next */
2034 s
->control_command
= NULL
;
2035 s
->control_command_id
= _SERVICE_EXEC_COMMAND_INVALID
;
2037 log_debug("%s got final SIGCHLD for state %s", u
->meta
.id
, service_state_to_string(s
->state
));
2041 case SERVICE_START_PRE
:
2043 service_enter_start(s
);
2045 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, false);
2049 assert(s
->type
== SERVICE_FORKING
);
2051 /* Let's try to load the pid
2052 * file here if we can. We
2053 * ignore the return value,
2054 * since the PID file might
2055 * actually be created by a
2056 * START_POST script */
2060 service_load_pid_file(s
);
2062 service_enter_start_post(s
);
2064 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, false);
2068 case SERVICE_START_POST
:
2069 if (success
&& s
->pid_file
&& !s
->main_pid_known
) {
2072 /* Hmm, let's see if we can
2073 * load the pid now after the
2074 * start-post scripts got
2077 if ((r
= service_load_pid_file(s
)) < 0)
2078 log_warning("%s: failed to load PID file %s: %s", UNIT(s
)->meta
.id
, s
->pid_file
, strerror(-r
));
2083 case SERVICE_RELOAD
:
2085 service_enter_running(s
, true);
2087 service_enter_stop(s
, false);
2092 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, success
);
2095 case SERVICE_STOP_SIGTERM
:
2096 case SERVICE_STOP_SIGKILL
:
2097 if (main_pid_good(s
) <= 0)
2098 service_enter_stop_post(s
, success
);
2100 /* If there is still a service
2101 * process around, wait until
2102 * that one quit, too */
2105 case SERVICE_STOP_POST
:
2106 case SERVICE_FINAL_SIGTERM
:
2107 case SERVICE_FINAL_SIGKILL
:
2108 service_enter_dead(s
, success
, true);
2112 assert_not_reached("Uh, control process died at wrong time.");
2118 static void service_timer_event(Unit
*u
, uint64_t elapsed
, Watch
* w
) {
2119 Service
*s
= SERVICE(u
);
2122 assert(elapsed
== 1);
2124 assert(w
== &s
->timer_watch
);
2128 case SERVICE_START_PRE
:
2130 log_warning("%s operation timed out. Terminating.", u
->meta
.id
);
2131 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, false);
2134 case SERVICE_START_POST
:
2135 case SERVICE_RELOAD
:
2136 log_warning("%s operation timed out. Stopping.", u
->meta
.id
);
2137 service_enter_stop(s
, false);
2141 log_warning("%s stopping timed out. Terminating.", u
->meta
.id
);
2142 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, false);
2145 case SERVICE_STOP_SIGTERM
:
2146 log_warning("%s stopping timed out. Killing.", u
->meta
.id
);
2147 service_enter_signal(s
, SERVICE_STOP_SIGKILL
, false);
2150 case SERVICE_STOP_SIGKILL
:
2151 /* Uh, wie sent a SIGKILL and it is still not gone?
2152 * Must be something we cannot kill, so let's just be
2153 * weirded out and continue */
2155 log_warning("%s still around after SIGKILL. Ignoring.", u
->meta
.id
);
2156 service_enter_stop_post(s
, false);
2159 case SERVICE_STOP_POST
:
2160 log_warning("%s stopping timed out (2). Terminating.", u
->meta
.id
);
2161 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, false);
2164 case SERVICE_FINAL_SIGTERM
:
2165 log_warning("%s stopping timed out (2). Killing.", u
->meta
.id
);
2166 service_enter_signal(s
, SERVICE_FINAL_SIGKILL
, false);
2169 case SERVICE_FINAL_SIGKILL
:
2170 log_warning("%s still around after SIGKILL (2). Entering maintenance mode.", u
->meta
.id
);
2171 service_enter_dead(s
, false, true);
2174 case SERVICE_AUTO_RESTART
:
2175 log_debug("%s holdoff time over, scheduling restart.", u
->meta
.id
);
2176 service_enter_restart(s
);
2180 assert_not_reached("Timeout at wrong time.");
2184 static void service_cgroup_notify_event(Unit
*u
) {
2185 Service
*s
= SERVICE(u
);
2189 log_debug("%s: cgroup is empty", u
->meta
.id
);
2193 /* Waiting for SIGCHLD is usually more interesting,
2194 * because it includes return codes/signals. Which is
2195 * why we ignore the cgroup events for most cases,
2196 * except when we don't know pid which to expect the
2199 case SERVICE_RUNNING
:
2200 service_enter_running(s
, true);
2208 static void service_notify_message(Unit
*u
, char **tags
) {
2209 Service
*s
= SERVICE(u
);
2214 log_debug("%s: Got message", u
->meta
.id
);
2216 /* Interpret MAINPID= */
2217 if ((e
= strv_find_prefix(tags
, "MAINPID=")) &&
2218 (s
->state
== SERVICE_START
||
2219 s
->state
== SERVICE_START_POST
||
2220 s
->state
== SERVICE_RUNNING
||
2221 s
->state
== SERVICE_RELOAD
)) {
2224 if (safe_atolu(e
+ 8, &pid
) < 0 ||
2225 (unsigned long) (pid_t
) pid
!= pid
||
2227 log_warning("Failed to parse %s", e
);
2229 log_debug("%s: got %s", u
->meta
.id
, e
);
2230 s
->main_pid
= (pid_t
) pid
;
2234 /* Interpret READY= */
2235 if (s
->type
== SERVICE_NOTIFY
&&
2236 s
->state
== SERVICE_START
&&
2237 strv_find(tags
, "READY=1")) {
2238 log_debug("%s: got READY=1", u
->meta
.id
);
2240 service_enter_start_post(s
);
2243 /* Interpret STATUS= */
2244 if ((e
= strv_find_prefix(tags
, "STATUS="))) {
2247 if (!(t
= strdup(e
+7))) {
2248 log_error("Failed to allocate string.");
2252 log_debug("%s: got %s", u
->meta
.id
, e
);
2254 free(s
->status_text
);
2259 static int service_enumerate(Manager
*m
) {
2263 char *path
= NULL
, *fpath
= NULL
, *name
= NULL
;
2268 STRV_FOREACH(p
, m
->lookup_paths
.sysvrcnd_path
)
2269 for (i
= 0; i
< ELEMENTSOF(rcnd_table
); i
++) {
2274 if (asprintf(&path
, "%s/%s", *p
, rcnd_table
[i
].path
) < 0) {
2282 if (!(d
= opendir(path
))) {
2283 if (errno
!= ENOENT
)
2284 log_warning("opendir() failed on %s: %s", path
, strerror(errno
));
2289 while ((de
= readdir(d
))) {
2293 if (ignore_file(de
->d_name
))
2296 if (de
->d_name
[0] != 'S' && de
->d_name
[0] != 'K')
2299 if (strlen(de
->d_name
) < 4)
2302 a
= undecchar(de
->d_name
[1]);
2303 b
= undecchar(de
->d_name
[2]);
2310 if (asprintf(&fpath
, "%s/%s/%s", *p
, rcnd_table
[i
].path
, de
->d_name
) < 0) {
2315 if (access(fpath
, X_OK
) < 0) {
2317 if (errno
!= ENOENT
)
2318 log_warning("access() failed on %s: %s", fpath
, strerror(errno
));
2324 if (!(name
= sysv_translate_name(de
->d_name
+ 3))) {
2329 if ((r
= manager_load_unit_prepare(m
, name
, NULL
, &service
)) < 0) {
2330 log_warning("Failed to prepare unit %s: %s", name
, strerror(-r
));
2334 if (de
->d_name
[0] == 'S' &&
2335 (rcnd_table
[i
].type
== RUNLEVEL_UP
|| rcnd_table
[i
].type
== RUNLEVEL_SYSINIT
))
2336 SERVICE(service
)->sysv_start_priority
=
2337 MAX(a
*10 + b
, SERVICE(service
)->sysv_start_priority
);
2339 manager_dispatch_load_queue(m
);
2340 service
= unit_follow_merge(service
);
2342 if (de
->d_name
[0] == 'S') {
2343 Unit
*runlevel_target
;
2345 if ((r
= manager_load_unit(m
, rcnd_table
[i
].target
, NULL
, &runlevel_target
)) < 0)
2348 if ((r
= unit_add_dependency(runlevel_target
, UNIT_WANTS
, service
, true)) < 0)
2351 if ((r
= unit_add_dependency(service
, UNIT_BEFORE
, runlevel_target
, true)) < 0)
2354 } else if (de
->d_name
[0] == 'K' &&
2355 (rcnd_table
[i
].type
== RUNLEVEL_DOWN
||
2356 rcnd_table
[i
].type
== RUNLEVEL_SYSINIT
)) {
2357 Unit
*shutdown_target
;
2359 /* We honour K links only for
2360 * halt/reboot. For the normal
2361 * runlevels we assume the
2363 * implicitly added by the
2364 * core logic. Also, we don't
2365 * really distuingish here
2366 * between the runlevels 0 and
2367 * 6 and just add them to the
2368 * special shutdown target. On
2369 * SUSE the boot.d/ runlevel
2370 * is also used for shutdown,
2371 * so we add links for that
2372 * too to the shutdown
2375 if ((r
= manager_load_unit(m
, SPECIAL_SHUTDOWN_TARGET
, NULL
, &shutdown_target
)) < 0)
2378 if ((r
= unit_add_dependency(service
, UNIT_CONFLICTS
, shutdown_target
, true)) < 0)
2381 if ((r
= unit_add_dependency(service
, UNIT_BEFORE
, shutdown_target
, true)) < 0)
2400 static void service_bus_name_owner_change(
2403 const char *old_owner
,
2404 const char *new_owner
) {
2406 Service
*s
= SERVICE(u
);
2411 assert(streq(s
->bus_name
, name
));
2412 assert(old_owner
|| new_owner
);
2414 if (old_owner
&& new_owner
)
2415 log_debug("%s's D-Bus name %s changed owner from %s to %s", u
->meta
.id
, name
, old_owner
, new_owner
);
2417 log_debug("%s's D-Bus name %s no longer registered by %s", u
->meta
.id
, name
, old_owner
);
2419 log_debug("%s's D-Bus name %s now registered by %s", u
->meta
.id
, name
, new_owner
);
2421 s
->bus_name_good
= !!new_owner
;
2423 if (s
->type
== SERVICE_DBUS
) {
2425 /* service_enter_running() will figure out what to
2427 if (s
->state
== SERVICE_RUNNING
)
2428 service_enter_running(s
, true);
2429 else if (s
->state
== SERVICE_START
&& new_owner
)
2430 service_enter_start_post(s
);
2432 } else if (new_owner
&&
2434 (s
->state
== SERVICE_START
||
2435 s
->state
== SERVICE_START_POST
||
2436 s
->state
== SERVICE_RUNNING
||
2437 s
->state
== SERVICE_RELOAD
)) {
2439 /* Try to acquire PID from bus service */
2440 log_debug("Trying to acquire PID from D-Bus name...");
2442 bus_query_pid(u
->meta
.manager
, name
);
2446 static void service_bus_query_pid_done(
2451 Service
*s
= SERVICE(u
);
2456 log_debug("%s's D-Bus name %s is now owned by process %u", u
->meta
.id
, name
, (unsigned) pid
);
2458 if (s
->main_pid
<= 0 &&
2459 (s
->state
== SERVICE_START
||
2460 s
->state
== SERVICE_START_POST
||
2461 s
->state
== SERVICE_RUNNING
||
2462 s
->state
== SERVICE_RELOAD
))
2466 int service_set_socket_fd(Service
*s
, int fd
) {
2470 /* This is called by the socket code when instantiating a new
2471 * service for a stream socket and the socket needs to be
2474 if (UNIT(s
)->meta
.load_state
!= UNIT_LOADED
)
2477 if (s
->socket_fd
>= 0)
2480 if (s
->state
!= SERVICE_DEAD
)
2484 s
->got_socket_fd
= true;
2488 static const char* const service_state_table
[_SERVICE_STATE_MAX
] = {
2489 [SERVICE_DEAD
] = "dead",
2490 [SERVICE_START_PRE
] = "start-pre",
2491 [SERVICE_START
] = "start",
2492 [SERVICE_START_POST
] = "start-post",
2493 [SERVICE_RUNNING
] = "running",
2494 [SERVICE_EXITED
] = "exited",
2495 [SERVICE_RELOAD
] = "reload",
2496 [SERVICE_STOP
] = "stop",
2497 [SERVICE_STOP_SIGTERM
] = "stop-sigterm",
2498 [SERVICE_STOP_SIGKILL
] = "stop-sigkill",
2499 [SERVICE_STOP_POST
] = "stop-post",
2500 [SERVICE_FINAL_SIGTERM
] = "final-sigterm",
2501 [SERVICE_FINAL_SIGKILL
] = "final-sigkill",
2502 [SERVICE_MAINTENANCE
] = "maintenance",
2503 [SERVICE_AUTO_RESTART
] = "auto-restart",
2506 DEFINE_STRING_TABLE_LOOKUP(service_state
, ServiceState
);
2508 static const char* const service_restart_table
[_SERVICE_RESTART_MAX
] = {
2509 [SERVICE_ONCE
] = "once",
2510 [SERVICE_RESTART_ON_SUCCESS
] = "restart-on-success",
2511 [SERVICE_RESTART_ALWAYS
] = "restart-always",
2514 DEFINE_STRING_TABLE_LOOKUP(service_restart
, ServiceRestart
);
2516 static const char* const service_type_table
[_SERVICE_TYPE_MAX
] = {
2517 [SERVICE_FORKING
] = "forking",
2518 [SERVICE_SIMPLE
] = "simple",
2519 [SERVICE_FINISH
] = "finish",
2520 [SERVICE_DBUS
] = "dbus",
2521 [SERVICE_NOTIFY
] = "notify"
2524 DEFINE_STRING_TABLE_LOOKUP(service_type
, ServiceType
);
2526 static const char* const service_exec_command_table
[_SERVICE_EXEC_COMMAND_MAX
] = {
2527 [SERVICE_EXEC_START_PRE
] = "ExecStartPre",
2528 [SERVICE_EXEC_START
] = "ExecStart",
2529 [SERVICE_EXEC_START_POST
] = "ExecStartPost",
2530 [SERVICE_EXEC_RELOAD
] = "ExecReload",
2531 [SERVICE_EXEC_STOP
] = "ExecStop",
2532 [SERVICE_EXEC_STOP_POST
] = "ExecStopPost",
2535 DEFINE_STRING_TABLE_LOOKUP(service_exec_command
, ServiceExecCommand
);
2537 const UnitVTable service_vtable
= {
2538 .suffix
= ".service",
2540 .init
= service_init
,
2541 .done
= service_done
,
2542 .load
= service_load
,
2544 .coldplug
= service_coldplug
,
2546 .dump
= service_dump
,
2548 .start
= service_start
,
2549 .stop
= service_stop
,
2550 .reload
= service_reload
,
2552 .can_reload
= service_can_reload
,
2554 .serialize
= service_serialize
,
2555 .deserialize_item
= service_deserialize_item
,
2557 .active_state
= service_active_state
,
2558 .sub_state_to_string
= service_sub_state_to_string
,
2560 .check_gc
= service_check_gc
,
2561 .check_snapshot
= service_check_snapshot
,
2563 .sigchld_event
= service_sigchld_event
,
2564 .timer_event
= service_timer_event
,
2566 .cgroup_notify_empty
= service_cgroup_notify_event
,
2567 .notify_message
= service_notify_message
,
2569 .bus_name_owner_change
= service_bus_name_owner_change
,
2570 .bus_query_pid_done
= service_bus_query_pid_done
,
2572 .bus_message_handler
= bus_service_message_handler
,
2574 .enumerate
= service_enumerate