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_BASIC
},
63 /* Debian style rcS.d */
64 { "rcS.d", SPECIAL_SYSINIT_TARGET
, RUNLEVEL_BASIC
},
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_MAINTAINANCE
] = 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 exec_context_done(&s
->exec_context
);
153 exec_command_free_array(s
->exec_command
, _SERVICE_EXEC_COMMAND_MAX
);
154 s
->control_command
= NULL
;
156 /* This will leak a process, but at least no memory or any of
158 service_unwatch_main_pid(s
);
159 service_unwatch_control_pid(s
);
162 unit_unwatch_bus_name(UNIT(u
), s
->bus_name
);
167 service_close_socket_fd(s
);
169 unit_unwatch_timer(u
, &s
->timer_watch
);
172 static char *sysv_translate_name(const char *name
) {
175 if (!(r
= new(char, strlen(name
) + sizeof(".service"))))
178 if (startswith(name
, "boot."))
179 /* Drop SuSE-style boot. prefix */
180 strcpy(stpcpy(r
, name
+ 5), ".service");
181 else if (endswith(name
, ".sh"))
182 /* Drop Debian-style .sh suffix */
183 strcpy(stpcpy(r
, name
) - 3, ".service");
185 /* Normal init scripts */
186 strcpy(stpcpy(r
, name
), ".service");
191 static int sysv_translate_facility(const char *name
, char **_r
) {
193 static const char * const table
[] = {
194 /* LSB defined facilities */
195 "$local_fs", SPECIAL_LOCAL_FS_TARGET
,
196 "$network", SPECIAL_NETWORK_TARGET
,
197 "$named", SPECIAL_NSS_LOOKUP_TARGET
,
198 "$portmap", SPECIAL_RPCBIND_TARGET
,
199 "$remote_fs", SPECIAL_REMOTE_FS_TARGET
,
200 "$syslog", SPECIAL_SYSLOG_TARGET
,
201 "$time", SPECIAL_RTC_SET_TARGET
,
203 /* Debian extensions */
204 "$mail-transport-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET
,
205 "$mail-transfer-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET
,
206 "$x-display-manager", SPECIAL_DISPLAY_MANAGER_SERVICE
212 for (i
= 0; i
< ELEMENTSOF(table
); i
+= 2)
213 if (streq(table
[i
], name
)) {
214 if (!(r
= strdup(table
[i
+1])))
223 if (!(r
= sysv_translate_name(name
)))
234 static int sysv_fix_order(Service
*s
) {
240 if (s
->sysv_start_priority
< 0)
243 /* For each pair of services where at least one lacks a LSB
244 * header, we use the start priority value to order things. */
246 LIST_FOREACH(units_per_type
, other
, UNIT(s
)->meta
.manager
->units_per_type
[UNIT_SERVICE
]) {
250 t
= (Service
*) other
;
255 if (t
->sysv_start_priority
< 0)
258 /* If both units have modern headers we don't care
259 * about the priorities */
260 if ((!s
->sysv_path
|| s
->sysv_has_lsb
) &&
261 (!t
->sysv_path
|| t
->sysv_has_lsb
))
264 if (t
->sysv_start_priority
< s
->sysv_start_priority
)
266 else if (t
->sysv_start_priority
> s
->sysv_start_priority
)
271 /* FIXME: Maybe we should compare the name here lexicographically? */
273 if (!(r
= unit_add_dependency(UNIT(s
), d
, UNIT(t
), true)) < 0)
280 static ExecCommand
*exec_command_new(const char *path
, const char *arg1
) {
283 if (!(c
= new0(ExecCommand
, 1)))
286 if (!(c
->path
= strdup(path
))) {
291 if (!(c
->argv
= strv_new(path
, arg1
, NULL
))) {
300 static int sysv_exec_commands(Service
*s
) {
304 assert(s
->sysv_path
);
306 if (!(c
= exec_command_new(s
->sysv_path
, "start")))
308 exec_command_append_list(s
->exec_command
+SERVICE_EXEC_START
, c
);
310 if (!(c
= exec_command_new(s
->sysv_path
, "stop")))
312 exec_command_append_list(s
->exec_command
+SERVICE_EXEC_STOP
, c
);
314 if (!(c
= exec_command_new(s
->sysv_path
, "reload")))
316 exec_command_append_list(s
->exec_command
+SERVICE_EXEC_RELOAD
, c
);
321 static int service_load_sysv_path(Service
*s
, const char *path
) {
338 if (!(f
= fopen(path
, "re"))) {
339 r
= errno
== ENOENT
? 0 : -errno
;
344 if (!(s
->sysv_path
= strdup(path
))) {
350 char l
[LINE_MAX
], *t
;
352 if (!fgets(l
, sizeof(l
), f
)) {
357 log_error("Failed to read configuration file '%s': %s", path
, strerror(-r
));
367 if (state
== NORMAL
&& streq(t
, "### BEGIN INIT INFO")) {
369 s
->sysv_has_lsb
= true;
373 if ((state
== LSB_DESCRIPTION
|| state
== LSB
) && streq(t
, "### END INIT INFO")) {
379 t
+= strspn(t
, WHITESPACE
);
381 if (state
== NORMAL
) {
383 /* Try to parse Red Hat style chkconfig headers */
385 if (startswith_no_case(t
, "chkconfig:")) {
387 char runlevels
[16], *k
;
391 if (sscanf(t
+10, "%15s %i %*i",
393 &start_priority
) != 2) {
395 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path
, line
);
399 /* A start priority gathered from the
400 * symlink farms is preferred over the
401 * data from the LSB header. */
402 if (start_priority
< 0 || start_priority
> 99)
403 log_warning("[%s:%u] Start priority out of range. Ignoring.", path
, line
);
404 else if (s
->sysv_start_priority
< 0)
405 s
->sysv_start_priority
= start_priority
;
407 char_array_0(runlevels
);
408 k
= delete_chars(runlevels
, WHITESPACE
"-");
413 if (!(d
= strdup(k
))) {
418 free(s
->sysv_runlevels
);
419 s
->sysv_runlevels
= d
;
422 } else if (startswith_no_case(t
, "description:")) {
424 size_t k
= strlen(t
);
427 if (t
[k
-1] == '\\') {
432 if (!(d
= strdup(strstrip(t
+12)))) {
437 free(u
->meta
.description
);
438 u
->meta
.description
= d
;
440 } else if (startswith_no_case(t
, "pidfile:")) {
447 if (!path_is_absolute(fn
)) {
448 log_warning("[%s:%u] PID file not absolute. Ignoring.", path
, line
);
452 if (!(fn
= strdup(fn
))) {
461 } else if (state
== DESCRIPTION
) {
463 /* Try to parse Red Hat style description
466 size_t k
= strlen(t
);
474 assert(u
->meta
.description
);
475 if (asprintf(&d
, "%s %s", u
->meta
.description
, strstrip(t
)) < 0) {
480 free(u
->meta
.description
);
481 u
->meta
.description
= d
;
483 } else if (state
== LSB
|| state
== LSB_DESCRIPTION
) {
485 if (startswith_no_case(t
, "Provides:")) {
491 FOREACH_WORD(w
, z
, t
+9, i
) {
494 if (!(n
= strndup(w
, z
))) {
499 r
= sysv_translate_facility(n
, &m
);
508 if (unit_name_to_type(m
) == UNIT_SERVICE
)
509 r
= unit_add_name(u
, m
);
511 if ((r
= unit_add_dependency_by_name_inverse(u
, UNIT_REQUIRES
, m
, NULL
, true)) >= 0)
512 r
= unit_add_dependency_by_name(u
, UNIT_BEFORE
, m
, NULL
, true);
521 } else if (startswith_no_case(t
, "Required-Start:") ||
522 startswith_no_case(t
, "Should-Start:") ||
523 startswith_no_case(t
, "X-Start-Before:") ||
524 startswith_no_case(t
, "X-Start-After:")) {
530 FOREACH_WORD(w
, z
, strchr(t
, ':')+1, i
) {
533 if (!(n
= strndup(w
, z
))) {
538 r
= sysv_translate_facility(n
, &m
);
547 r
= unit_add_dependency_by_name(u
, startswith_no_case(t
, "X-Start-Before:") ? UNIT_BEFORE
: UNIT_AFTER
, m
, NULL
, true);
553 } else if (startswith_no_case(t
, "Default-Start:")) {
558 k
= delete_chars(t
+14, WHITESPACE
"-");
561 if (!(d
= strdup(k
))) {
566 free(s
->sysv_runlevels
);
567 s
->sysv_runlevels
= d
;
570 } else if (startswith_no_case(t
, "Description:")) {
573 state
= LSB_DESCRIPTION
;
575 if (!(d
= strdup(strstrip(t
+12)))) {
580 free(u
->meta
.description
);
581 u
->meta
.description
= d
;
583 } else if (startswith_no_case(t
, "Short-Description:") &&
584 !u
->meta
.description
) {
587 /* We use the short description only
588 * if no long description is set. */
592 if (!(d
= strdup(strstrip(t
+18)))) {
597 u
->meta
.description
= d
;
599 } else if (startswith_no_case(t
, "X-Interactive:")) {
602 if ((b
= parse_boolean(strstrip(t
+14))) < 0) {
603 log_warning("[%s:%u] Couldn't parse interactive flag. Ignoring.", path
, line
);
608 s
->exec_context
.std_input
= EXEC_INPUT_TTY
;
610 s
->exec_context
.std_input
= EXEC_INPUT_NULL
;
612 } else if (state
== LSB_DESCRIPTION
) {
614 if (startswith(l
, "#\t") || startswith(l
, "# ")) {
617 assert(u
->meta
.description
);
618 if (asprintf(&d
, "%s %s", u
->meta
.description
, t
) < 0) {
623 free(u
->meta
.description
);
624 u
->meta
.description
= d
;
631 if ((r
= sysv_exec_commands(s
)) < 0)
634 if (!s
->sysv_runlevels
|| chars_intersect(RUNLEVELS_UP
, s
->sysv_runlevels
)) {
635 /* If there a runlevels configured for this service
636 * but none of the standard ones, then we assume this
637 * is some special kind of service (which might be
638 * needed for early boot) and don't create any links
641 if ((r
= unit_add_dependency_by_name(u
, UNIT_REQUIRES
, SPECIAL_BASIC_TARGET
, NULL
, true)) < 0 ||
642 (r
= unit_add_dependency_by_name(u
, UNIT_AFTER
, SPECIAL_BASIC_TARGET
, NULL
, true)) < 0)
646 /* Don't timeout special services during boot (like fsck) */
649 /* Special setting for all SysV services */
650 s
->type
= SERVICE_FORKING
;
651 s
->valid_no_process
= true;
652 s
->kill_mode
= KILL_PROCESS_GROUP
;
653 s
->restart
= SERVICE_ONCE
;
655 u
->meta
.load_state
= UNIT_LOADED
;
666 static int service_load_sysv_name(Service
*s
, const char *name
) {
672 /* For SysV services we strip the boot. or .sh
673 * prefixes/suffixes. */
674 if (startswith(name
, "boot.") ||
675 endswith(name
, ".sh.service"))
678 STRV_FOREACH(p
, UNIT(s
)->meta
.manager
->sysvinit_path
) {
682 if (asprintf(&path
, "%s/%s", *p
, name
) < 0)
685 assert(endswith(path
, ".service"));
686 path
[strlen(path
)-8] = 0;
688 r
= service_load_sysv_path(s
, path
);
690 if (r
>= 0 && UNIT(s
)->meta
.load_state
== UNIT_STUB
) {
691 /* Try Debian style xxx.sh source'able init scripts */
693 r
= service_load_sysv_path(s
, path
);
698 if (r
>= 0 && UNIT(s
)->meta
.load_state
== UNIT_STUB
) {
699 /* Try SUSE style boot.xxx init scripts */
701 if (asprintf(&path
, "%s/boot.%s", *p
, name
) < 0)
704 path
[strlen(path
)-8] = 0;
705 r
= service_load_sysv_path(s
, path
);
712 if ((UNIT(s
)->meta
.load_state
!= UNIT_STUB
))
719 static int service_load_sysv(Service
*s
) {
726 /* Load service data from SysV init scripts, preferably with
729 if (strv_isempty(UNIT(s
)->meta
.manager
->sysvinit_path
))
732 if ((t
= UNIT(s
)->meta
.id
))
733 if ((r
= service_load_sysv_name(s
, t
)) < 0)
736 if (UNIT(s
)->meta
.load_state
== UNIT_STUB
)
737 SET_FOREACH(t
, UNIT(s
)->meta
.names
, i
) {
738 if (t
== UNIT(s
)->meta
.id
)
741 if ((r
== service_load_sysv_name(s
, t
)) < 0)
744 if (UNIT(s
)->meta
.load_state
!= UNIT_STUB
)
751 static int service_add_bus_name(Service
*s
) {
758 if (asprintf(&n
, "dbus-%s.service", s
->bus_name
) < 0)
761 r
= unit_merge_by_name(UNIT(s
), n
);
767 static int service_verify(Service
*s
) {
770 if (UNIT(s
)->meta
.load_state
!= UNIT_LOADED
)
773 if (!s
->exec_command
[SERVICE_EXEC_START
]) {
774 log_error("%s lacks ExecStart setting. Refusing.", UNIT(s
)->meta
.id
);
778 if (s
->type
== SERVICE_DBUS
&& !s
->bus_name
) {
779 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s
)->meta
.id
);
786 static int service_load(Unit
*u
) {
788 Service
*s
= SERVICE(u
);
792 /* Load a .service file */
793 if ((r
= unit_load_fragment(u
)) < 0)
796 /* Load a classic init script as a fallback, if we couldn't find anything */
797 if (u
->meta
.load_state
== UNIT_STUB
)
798 if ((r
= service_load_sysv(s
)) < 0)
801 /* Still nothing found? Then let's give up */
802 if (u
->meta
.load_state
== UNIT_STUB
)
805 /* We were able to load something, then let's add in the
806 * dropin directories. */
807 if ((r
= unit_load_dropin(unit_follow_merge(u
))) < 0)
810 /* This is a new unit? Then let's add in some extras */
811 if (u
->meta
.load_state
== UNIT_LOADED
) {
812 if ((r
= unit_add_exec_dependencies(u
, &s
->exec_context
)) < 0)
815 if ((r
= unit_add_default_cgroup(u
)) < 0)
818 if ((r
= sysv_fix_order(s
)) < 0)
822 if ((r
= service_add_bus_name(s
)) < 0)
825 if ((r
= unit_watch_bus_name(u
, s
->bus_name
)) < 0)
830 return service_verify(s
);
833 static void service_dump(Unit
*u
, FILE *f
, const char *prefix
) {
835 ServiceExecCommand c
;
836 Service
*s
= SERVICE(u
);
842 p2
= strappend(prefix
, "\t");
843 prefix2
= p2
? p2
: prefix
;
846 "%sService State: %s\n"
847 "%sPermissionsStartOnly: %s\n"
848 "%sRootDirectoryStartOnly: %s\n"
849 "%sValidNoProcess: %s\n"
852 prefix
, service_state_to_string(s
->state
),
853 prefix
, yes_no(s
->permissions_start_only
),
854 prefix
, yes_no(s
->root_directory_start_only
),
855 prefix
, yes_no(s
->valid_no_process
),
856 prefix
, kill_mode_to_string(s
->kill_mode
),
857 prefix
, service_type_to_string(s
->type
));
859 if (s
->control_pid
> 0)
861 "%sControl PID: %llu\n",
862 prefix
, (unsigned long long) s
->control_pid
);
866 "%sMain PID: %llu\n",
867 prefix
, (unsigned long long) s
->main_pid
);
872 prefix
, s
->pid_file
);
877 "%sBus Name Good: %s\n",
879 prefix
, yes_no(s
->bus_name_good
));
881 exec_context_dump(&s
->exec_context
, f
, prefix
);
883 for (c
= 0; c
< _SERVICE_EXEC_COMMAND_MAX
; c
++) {
885 if (!s
->exec_command
[c
])
888 fprintf(f
, "%s-> %s:\n",
889 prefix
, service_exec_command_to_string(c
));
891 exec_command_dump_list(s
->exec_command
[c
], f
, prefix2
);
896 "%sSysV Init Script Path: %s\n"
897 "%sSysV Init Script has LSB Header: %s\n",
898 prefix
, s
->sysv_path
,
899 prefix
, yes_no(s
->sysv_has_lsb
));
901 if (s
->sysv_start_priority
>= 0)
903 "%sSysVStartPriority: %i\n",
904 prefix
, s
->sysv_start_priority
);
906 if (s
->sysv_runlevels
)
907 fprintf(f
, "%sSysVRunLevels: %s\n",
908 prefix
, s
->sysv_runlevels
);
913 static int service_load_pid_file(Service
*s
) {
920 if (s
->main_pid_known
)
923 assert(s
->main_pid
<= 0);
928 if ((r
= read_one_line_file(s
->pid_file
, &k
)) < 0)
931 if ((r
= safe_atolu(k
, &p
)) < 0) {
936 if ((unsigned long) (pid_t
) p
!= p
)
939 if (kill((pid_t
) p
, 0) < 0 && errno
!= EPERM
) {
940 log_warning("PID %llu read from file %s does not exist. Your service or init script might be broken.",
941 (unsigned long long) p
, s
->pid_file
);
945 if ((r
= unit_watch_pid(UNIT(s
), (pid_t
) p
)) < 0)
946 /* FIXME: we need to do something here */
949 s
->main_pid
= (pid_t
) p
;
950 s
->main_pid_known
= true;
955 static int service_get_sockets(Service
*s
, Set
**_set
) {
964 /* Collects all Socket objects that belong to this
965 * service. Note that a service might have multiple sockets
966 * via multiple names. */
968 if (!(set
= set_new(NULL
, NULL
)))
971 SET_FOREACH(t
, UNIT(s
)->meta
.names
, i
) {
975 /* Look for all socket objects that go by any of our
976 * units and collect their fds */
978 if (!(k
= unit_name_change_suffix(t
, ".socket"))) {
983 p
= manager_get_unit(UNIT(s
)->meta
.manager
, k
);
989 if ((r
= set_put(set
, p
)) < 0)
1001 static int service_notify_sockets_dead(Service
*s
) {
1009 /* Notifies all our sockets when we die */
1010 if ((r
= service_get_sockets(s
, &set
)) < 0)
1013 SET_FOREACH(sock
, set
, i
)
1014 socket_notify_service_dead(sock
);
1021 static void service_set_state(Service
*s
, ServiceState state
) {
1022 ServiceState old_state
;
1025 old_state
= s
->state
;
1028 if (state
!= SERVICE_START_PRE
&&
1029 state
!= SERVICE_START
&&
1030 state
!= SERVICE_START_POST
&&
1031 state
!= SERVICE_RELOAD
&&
1032 state
!= SERVICE_STOP
&&
1033 state
!= SERVICE_STOP_SIGTERM
&&
1034 state
!= SERVICE_STOP_SIGKILL
&&
1035 state
!= SERVICE_STOP_POST
&&
1036 state
!= SERVICE_FINAL_SIGTERM
&&
1037 state
!= SERVICE_FINAL_SIGKILL
&&
1038 state
!= SERVICE_AUTO_RESTART
)
1039 unit_unwatch_timer(UNIT(s
), &s
->timer_watch
);
1041 if (state
!= SERVICE_START
&&
1042 state
!= SERVICE_START_POST
&&
1043 state
!= SERVICE_RUNNING
&&
1044 state
!= SERVICE_RELOAD
&&
1045 state
!= SERVICE_STOP
&&
1046 state
!= SERVICE_STOP_SIGTERM
&&
1047 state
!= SERVICE_STOP_SIGKILL
)
1048 service_unwatch_main_pid(s
);
1050 if (state
!= SERVICE_START_PRE
&&
1051 state
!= SERVICE_START
&&
1052 state
!= SERVICE_START_POST
&&
1053 state
!= SERVICE_RELOAD
&&
1054 state
!= SERVICE_STOP
&&
1055 state
!= SERVICE_STOP_SIGTERM
&&
1056 state
!= SERVICE_STOP_SIGKILL
&&
1057 state
!= SERVICE_STOP_POST
&&
1058 state
!= SERVICE_FINAL_SIGTERM
&&
1059 state
!= SERVICE_FINAL_SIGKILL
) {
1060 service_unwatch_control_pid(s
);
1061 s
->control_command
= NULL
;
1062 s
->control_command_id
= _SERVICE_EXEC_COMMAND_INVALID
;
1065 if (state
== SERVICE_DEAD
||
1066 state
== SERVICE_STOP
||
1067 state
== SERVICE_STOP_SIGTERM
||
1068 state
== SERVICE_STOP_SIGKILL
||
1069 state
== SERVICE_STOP_POST
||
1070 state
== SERVICE_FINAL_SIGTERM
||
1071 state
== SERVICE_FINAL_SIGKILL
||
1072 state
== SERVICE_MAINTAINANCE
||
1073 state
== SERVICE_AUTO_RESTART
)
1074 service_notify_sockets_dead(s
);
1076 if (state
!= SERVICE_START_PRE
&&
1077 state
!= SERVICE_START
&&
1078 !(state
== SERVICE_DEAD
&& UNIT(s
)->meta
.job
))
1079 service_close_socket_fd(s
);
1081 if (old_state
!= state
)
1082 log_debug("%s changed %s -> %s", UNIT(s
)->meta
.id
, service_state_to_string(old_state
), service_state_to_string(state
));
1084 unit_notify(UNIT(s
), state_translation_table
[old_state
], state_translation_table
[state
]);
1087 static int service_coldplug(Unit
*u
) {
1088 Service
*s
= SERVICE(u
);
1092 assert(s
->state
== SERVICE_DEAD
);
1094 if (s
->deserialized_state
!= s
->state
) {
1096 if (s
->deserialized_state
== SERVICE_START_PRE
||
1097 s
->deserialized_state
== SERVICE_START
||
1098 s
->deserialized_state
== SERVICE_START_POST
||
1099 s
->deserialized_state
== SERVICE_RELOAD
||
1100 s
->deserialized_state
== SERVICE_STOP
||
1101 s
->deserialized_state
== SERVICE_STOP_SIGTERM
||
1102 s
->deserialized_state
== SERVICE_STOP_SIGKILL
||
1103 s
->deserialized_state
== SERVICE_STOP_POST
||
1104 s
->deserialized_state
== SERVICE_FINAL_SIGTERM
||
1105 s
->deserialized_state
== SERVICE_FINAL_SIGKILL
||
1106 s
->deserialized_state
== SERVICE_AUTO_RESTART
) {
1108 if (s
->deserialized_state
== SERVICE_AUTO_RESTART
|| s
->timeout_usec
> 0) {
1111 k
= s
->deserialized_state
== SERVICE_AUTO_RESTART
? s
->restart_usec
: s
->timeout_usec
;
1113 if ((r
= unit_watch_timer(UNIT(s
), k
, &s
->timer_watch
)) < 0)
1118 if ((s
->deserialized_state
== SERVICE_START
&&
1119 (s
->type
== SERVICE_FORKING
||
1120 s
->type
== SERVICE_DBUS
)) ||
1121 s
->deserialized_state
== SERVICE_START_POST
||
1122 s
->deserialized_state
== SERVICE_RUNNING
||
1123 s
->deserialized_state
== SERVICE_RELOAD
||
1124 s
->deserialized_state
== SERVICE_STOP
||
1125 s
->deserialized_state
== SERVICE_STOP_SIGTERM
||
1126 s
->deserialized_state
== SERVICE_STOP_SIGKILL
)
1127 if (s
->main_pid
> 0)
1128 if ((r
= unit_watch_pid(UNIT(s
), s
->main_pid
)) < 0)
1131 if (s
->deserialized_state
== SERVICE_START_PRE
||
1132 s
->deserialized_state
== SERVICE_START
||
1133 s
->deserialized_state
== SERVICE_START_POST
||
1134 s
->deserialized_state
== SERVICE_RELOAD
||
1135 s
->deserialized_state
== SERVICE_STOP
||
1136 s
->deserialized_state
== SERVICE_STOP_SIGTERM
||
1137 s
->deserialized_state
== SERVICE_STOP_SIGKILL
||
1138 s
->deserialized_state
== SERVICE_STOP_POST
||
1139 s
->deserialized_state
== SERVICE_FINAL_SIGTERM
||
1140 s
->deserialized_state
== SERVICE_FINAL_SIGKILL
)
1141 if (s
->control_pid
> 0)
1142 if ((r
= unit_watch_pid(UNIT(s
), s
->control_pid
)) < 0)
1145 service_set_state(s
, s
->deserialized_state
);
1151 static int service_collect_fds(Service
*s
, int **fds
, unsigned *n_fds
) {
1155 unsigned rn_fds
= 0;
1163 if ((r
= service_get_sockets(s
, &set
)) < 0)
1166 SET_FOREACH(sock
, set
, i
) {
1170 if ((r
= socket_collect_fds(sock
, &cfds
, &cn_fds
)) < 0)
1182 if (!(t
= new(int, rn_fds
+cn_fds
))) {
1188 memcpy(t
, rfds
, rn_fds
);
1189 memcpy(t
+rn_fds
, cfds
, cn_fds
);
1194 rn_fds
= rn_fds
+cn_fds
;
1212 static int service_spawn(
1217 bool apply_permissions
,
1232 if (s
->socket_fd
>= 0) {
1233 fds
= &s
->socket_fd
;
1235 } else if ((r
= service_collect_fds(s
, &fds
, &n_fds
)) < 0)
1239 if (timeout
&& s
->timeout_usec
) {
1240 if ((r
= unit_watch_timer(UNIT(s
), s
->timeout_usec
, &s
->timer_watch
)) < 0)
1243 unit_unwatch_timer(UNIT(s
), &s
->timer_watch
);
1245 if (!(argv
= unit_full_printf_strv(UNIT(s
), c
->argv
))) {
1254 s
->meta
.manager
->environment
,
1257 UNIT(s
)->meta
.manager
->confirm_spawn
,
1258 UNIT(s
)->meta
.cgroup_bondings
,
1266 if (s
->socket_fd
>= 0)
1267 service_close_socket_fd(s
);
1272 if ((r
= unit_watch_pid(UNIT(s
), pid
)) < 0)
1273 /* FIXME: we need to do something here */
1284 unit_unwatch_timer(UNIT(s
), &s
->timer_watch
);
1289 static int main_pid_good(Service
*s
) {
1292 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1295 /* If we know the pid file, then lets just check if it is
1297 if (s
->main_pid_known
)
1298 return s
->main_pid
> 0;
1300 /* We don't know the pid */
1304 static int control_pid_good(Service
*s
) {
1307 return s
->control_pid
> 0;
1310 static int cgroup_good(Service
*s
) {
1315 if (s
->valid_no_process
)
1318 if ((r
= cgroup_bonding_is_empty_list(UNIT(s
)->meta
.cgroup_bondings
)) < 0)
1324 static void service_enter_dead(Service
*s
, bool success
, bool allow_restart
) {
1331 if (allow_restart
&&
1333 (s
->restart
== SERVICE_RESTART_ALWAYS
||
1334 (s
->restart
== SERVICE_RESTART_ON_SUCCESS
&& !s
->failure
))) {
1336 if ((r
= unit_watch_timer(UNIT(s
), s
->restart_usec
, &s
->timer_watch
)) < 0)
1339 service_set_state(s
, SERVICE_AUTO_RESTART
);
1341 service_set_state(s
, s
->failure
? SERVICE_MAINTAINANCE
: SERVICE_DEAD
);
1346 log_warning("%s failed to run install restart timer: %s", UNIT(s
)->meta
.id
, strerror(-r
));
1347 service_enter_dead(s
, false, false);
1350 static void service_enter_signal(Service
*s
, ServiceState state
, bool success
);
1352 static void service_enter_stop_post(Service
*s
, bool success
) {
1359 service_unwatch_control_pid(s
);
1361 s
->control_command_id
= SERVICE_EXEC_STOP_POST
;
1362 if ((s
->control_command
= s
->exec_command
[SERVICE_EXEC_STOP_POST
])) {
1363 if ((r
= service_spawn(s
,
1367 !s
->permissions_start_only
,
1368 !s
->root_directory_start_only
,
1369 &s
->control_pid
)) < 0)
1373 service_set_state(s
, SERVICE_STOP_POST
);
1375 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, true);
1380 log_warning("%s failed to run stop-post executable: %s", UNIT(s
)->meta
.id
, strerror(-r
));
1381 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, false);
1384 static void service_enter_signal(Service
*s
, ServiceState state
, bool success
) {
1393 if (s
->kill_mode
!= KILL_NONE
) {
1394 int sig
= (state
== SERVICE_STOP_SIGTERM
|| state
== SERVICE_FINAL_SIGTERM
) ? SIGTERM
: SIGKILL
;
1396 if (s
->kill_mode
== KILL_CONTROL_GROUP
) {
1398 if ((r
= cgroup_bonding_kill_list(UNIT(s
)->meta
.cgroup_bondings
, sig
)) < 0) {
1399 if (r
!= -EAGAIN
&& r
!= -ESRCH
)
1408 if (s
->main_pid
> 0) {
1409 if (kill(s
->kill_mode
== KILL_PROCESS
? s
->main_pid
: -s
->main_pid
, sig
) < 0 && errno
!= ESRCH
)
1415 if (s
->control_pid
> 0) {
1416 if (kill(s
->kill_mode
== KILL_PROCESS
? s
->control_pid
: -s
->control_pid
, sig
) < 0 && errno
!= ESRCH
)
1427 if (sent
&& (s
->main_pid
> 0 || s
->control_pid
> 0)) {
1428 if (s
->timeout_usec
> 0)
1429 if ((r
= unit_watch_timer(UNIT(s
), s
->timeout_usec
, &s
->timer_watch
)) < 0)
1432 service_set_state(s
, state
);
1433 } else if (state
== SERVICE_STOP_SIGTERM
|| state
== SERVICE_STOP_SIGKILL
)
1434 service_enter_stop_post(s
, true);
1436 service_enter_dead(s
, true, true);
1441 log_warning("%s failed to kill processes: %s", UNIT(s
)->meta
.id
, strerror(-r
));
1443 if (state
== SERVICE_STOP_SIGTERM
|| state
== SERVICE_STOP_SIGKILL
)
1444 service_enter_stop_post(s
, false);
1446 service_enter_dead(s
, false, true);
1449 static void service_enter_stop(Service
*s
, bool success
) {
1456 service_unwatch_control_pid(s
);
1458 s
->control_command_id
= SERVICE_EXEC_STOP
;
1459 if ((s
->control_command
= s
->exec_command
[SERVICE_EXEC_STOP
])) {
1460 if ((r
= service_spawn(s
,
1464 !s
->permissions_start_only
,
1465 !s
->root_directory_start_only
,
1466 &s
->control_pid
)) < 0)
1469 service_set_state(s
, SERVICE_STOP
);
1471 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, true);
1476 log_warning("%s failed to run stop executable: %s", UNIT(s
)->meta
.id
, strerror(-r
));
1477 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, false);
1480 static void service_enter_running(Service
*s
, bool success
) {
1486 if (main_pid_good(s
) != 0 &&
1487 cgroup_good(s
) != 0 &&
1488 (s
->bus_name_good
|| s
->type
!= SERVICE_DBUS
))
1489 service_set_state(s
, SERVICE_RUNNING
);
1490 else if (s
->valid_no_process
)
1491 service_set_state(s
, SERVICE_EXITED
);
1493 service_enter_stop(s
, true);
1496 static void service_enter_start_post(Service
*s
) {
1500 service_unwatch_control_pid(s
);
1502 s
->control_command_id
= SERVICE_EXEC_START_POST
;
1503 if ((s
->control_command
= s
->exec_command
[SERVICE_EXEC_START_POST
])) {
1504 if ((r
= service_spawn(s
,
1508 !s
->permissions_start_only
,
1509 !s
->root_directory_start_only
,
1510 &s
->control_pid
)) < 0)
1514 service_set_state(s
, SERVICE_START_POST
);
1516 service_enter_running(s
, true);
1521 log_warning("%s failed to run start-post executable: %s", UNIT(s
)->meta
.id
, strerror(-r
));
1522 service_enter_stop(s
, false);
1525 static void service_enter_start(Service
*s
) {
1531 assert(s
->exec_command
[SERVICE_EXEC_START
]);
1532 assert(!s
->exec_command
[SERVICE_EXEC_START
]->command_next
);
1534 if (s
->type
== SERVICE_FORKING
)
1535 service_unwatch_control_pid(s
);
1537 service_unwatch_main_pid(s
);
1539 if ((r
= service_spawn(s
,
1540 s
->exec_command
[SERVICE_EXEC_START
],
1541 s
->type
== SERVICE_FORKING
|| s
->type
== SERVICE_DBUS
,
1548 if (s
->type
== SERVICE_SIMPLE
) {
1549 /* For simple services we immediately start
1550 * the START_POST binaries. */
1553 s
->main_pid_known
= true;
1555 service_enter_start_post(s
);
1557 } else if (s
->type
== SERVICE_FORKING
) {
1559 /* For forking services we wait until the start
1560 * process exited. */
1562 s
->control_pid
= pid
;
1564 s
->control_command_id
= SERVICE_EXEC_START
;
1565 s
->control_command
= s
->exec_command
[SERVICE_EXEC_START
];
1566 service_set_state(s
, SERVICE_START
);
1568 } else if (s
->type
== SERVICE_FINISH
||
1569 s
->type
== SERVICE_DBUS
) {
1571 /* For finishing services we wait until the start
1572 * process exited, too, but it is our main process. */
1574 /* For D-Bus services we know the main pid right away,
1575 * but wait for the bus name to appear on the bus. */
1578 s
->main_pid_known
= true;
1580 service_set_state(s
, SERVICE_START
);
1582 assert_not_reached("Unknown service type");
1587 log_warning("%s failed to run start exectuable: %s", UNIT(s
)->meta
.id
, strerror(-r
));
1588 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, false);
1591 static void service_enter_start_pre(Service
*s
) {
1596 service_unwatch_control_pid(s
);
1598 s
->control_command_id
= SERVICE_EXEC_START_PRE
;
1599 if ((s
->control_command
= s
->exec_command
[SERVICE_EXEC_START_PRE
])) {
1600 if ((r
= service_spawn(s
,
1604 !s
->permissions_start_only
,
1605 !s
->root_directory_start_only
,
1606 &s
->control_pid
)) < 0)
1609 service_set_state(s
, SERVICE_START_PRE
);
1611 service_enter_start(s
);
1616 log_warning("%s failed to run start-pre executable: %s", UNIT(s
)->meta
.id
, strerror(-r
));
1617 service_enter_dead(s
, false, true);
1620 static void service_enter_restart(Service
*s
) {
1624 service_enter_dead(s
, true, false);
1626 if ((r
= manager_add_job(UNIT(s
)->meta
.manager
, JOB_START
, UNIT(s
), JOB_FAIL
, false, NULL
)) < 0)
1629 log_debug("%s scheduled restart job.", UNIT(s
)->meta
.id
);
1634 log_warning("%s failed to schedule restart job: %s", UNIT(s
)->meta
.id
, strerror(-r
));
1635 service_enter_dead(s
, false, false);
1638 static void service_enter_reload(Service
*s
) {
1643 service_unwatch_control_pid(s
);
1645 s
->control_command_id
= SERVICE_EXEC_RELOAD
;
1646 if ((s
->control_command
= s
->exec_command
[SERVICE_EXEC_RELOAD
])) {
1647 if ((r
= service_spawn(s
,
1651 !s
->permissions_start_only
,
1652 !s
->root_directory_start_only
,
1653 &s
->control_pid
)) < 0)
1656 service_set_state(s
, SERVICE_RELOAD
);
1658 service_enter_running(s
, true);
1663 log_warning("%s failed to run reload executable: %s", UNIT(s
)->meta
.id
, strerror(-r
));
1664 service_enter_stop(s
, false);
1667 static void service_run_next(Service
*s
, bool success
) {
1671 assert(s
->control_command
);
1672 assert(s
->control_command
->command_next
);
1677 s
->control_command
= s
->control_command
->command_next
;
1679 service_unwatch_control_pid(s
);
1681 if ((r
= service_spawn(s
,
1685 !s
->permissions_start_only
,
1686 !s
->root_directory_start_only
,
1687 &s
->control_pid
)) < 0)
1693 log_warning("%s failed to run spawn next executable: %s", UNIT(s
)->meta
.id
, strerror(-r
));
1695 if (s
->state
== SERVICE_START_PRE
)
1696 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, false);
1697 else if (s
->state
== SERVICE_STOP
)
1698 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, false);
1699 else if (s
->state
== SERVICE_STOP_POST
)
1700 service_enter_dead(s
, false, true);
1702 service_enter_stop(s
, false);
1705 static int service_start(Unit
*u
) {
1706 Service
*s
= SERVICE(u
);
1710 /* We cannot fulfill this request right now, try again later
1712 if (s
->state
== SERVICE_STOP
||
1713 s
->state
== SERVICE_STOP_SIGTERM
||
1714 s
->state
== SERVICE_STOP_SIGKILL
||
1715 s
->state
== SERVICE_STOP_POST
||
1716 s
->state
== SERVICE_FINAL_SIGTERM
||
1717 s
->state
== SERVICE_FINAL_SIGKILL
)
1720 /* Already on it! */
1721 if (s
->state
== SERVICE_START_PRE
||
1722 s
->state
== SERVICE_START
||
1723 s
->state
== SERVICE_START_POST
)
1726 assert(s
->state
== SERVICE_DEAD
|| s
->state
== SERVICE_MAINTAINANCE
|| s
->state
== SERVICE_AUTO_RESTART
);
1728 /* Make sure we don't enter a busy loop of some kind. */
1729 if (!ratelimit_test(&s
->ratelimit
)) {
1730 log_warning("%s start request repeated too quickly, refusing to start.", u
->meta
.id
);
1735 s
->main_pid_known
= false;
1736 s
->allow_restart
= true;
1738 service_enter_start_pre(s
);
1742 static int service_stop(Unit
*u
) {
1743 Service
*s
= SERVICE(u
);
1747 /* Cannot do this now */
1748 if (s
->state
== SERVICE_START_PRE
||
1749 s
->state
== SERVICE_START
||
1750 s
->state
== SERVICE_START_POST
||
1751 s
->state
== SERVICE_RELOAD
)
1755 if (s
->state
== SERVICE_STOP
||
1756 s
->state
== SERVICE_STOP_SIGTERM
||
1757 s
->state
== SERVICE_STOP_SIGKILL
||
1758 s
->state
== SERVICE_STOP_POST
||
1759 s
->state
== SERVICE_FINAL_SIGTERM
||
1760 s
->state
== SERVICE_FINAL_SIGKILL
)
1763 if (s
->state
== SERVICE_AUTO_RESTART
) {
1764 service_set_state(s
, SERVICE_DEAD
);
1768 assert(s
->state
== SERVICE_RUNNING
|| s
->state
== SERVICE_EXITED
);
1770 /* This is a user request, so don't do restarts on this
1772 s
->allow_restart
= false;
1774 service_enter_stop(s
, true);
1778 static int service_reload(Unit
*u
) {
1779 Service
*s
= SERVICE(u
);
1783 assert(s
->state
== SERVICE_RUNNING
|| s
->state
== SERVICE_EXITED
);
1785 service_enter_reload(s
);
1789 static bool service_can_reload(Unit
*u
) {
1790 Service
*s
= SERVICE(u
);
1794 return !!s
->exec_command
[SERVICE_EXEC_RELOAD
];
1797 static int service_serialize(Unit
*u
, FILE *f
, FDSet
*fds
) {
1798 Service
*s
= SERVICE(u
);
1804 unit_serialize_item(u
, f
, "state", service_state_to_string(s
->state
));
1805 unit_serialize_item(u
, f
, "failure", yes_no(s
->failure
));
1807 if (s
->control_pid
> 0)
1808 unit_serialize_item_format(u
, f
, "control-pid", "%u", (unsigned) (s
->control_pid
));
1810 if (s
->main_pid
> 0)
1811 unit_serialize_item_format(u
, f
, "main-pid", "%u", (unsigned) (s
->main_pid
));
1813 unit_serialize_item(u
, f
, "main-pid-known", yes_no(s
->main_pid_known
));
1815 /* There's a minor uncleanliness here: if there are multiple
1816 * commands attached here, we will start from the first one
1818 if (s
->control_command_id
>= 0)
1819 unit_serialize_item(u
, f
, "control-command", service_exec_command_to_string(s
->control_command_id
));
1821 if (s
->socket_fd
>= 0) {
1824 if ((copy
= fdset_put_dup(fds
, s
->socket_fd
)) < 0)
1827 unit_serialize_item_format(u
, f
, "socket-fd", "%i", copy
);
1833 static int service_deserialize_item(Unit
*u
, const char *key
, const char *value
, FDSet
*fds
) {
1834 Service
*s
= SERVICE(u
);
1842 if (streq(key
, "state")) {
1845 if ((state
= service_state_from_string(value
)) < 0)
1846 log_debug("Failed to parse state value %s", value
);
1848 s
->deserialized_state
= state
;
1849 } else if (streq(key
, "failure")) {
1852 if ((b
= parse_boolean(value
)) < 0)
1853 log_debug("Failed to parse failure value %s", value
);
1855 s
->failure
= b
|| s
->failure
;
1856 } else if (streq(key
, "control-pid")) {
1859 if ((r
= safe_atou(value
, &pid
)) < 0 || pid
<= 0)
1860 log_debug("Failed to parse control-pid value %s", value
);
1862 s
->control_pid
= (pid_t
) pid
;
1863 } else if (streq(key
, "main-pid")) {
1866 if ((r
= safe_atou(value
, &pid
)) < 0 || pid
<= 0)
1867 log_debug("Failed to parse main-pid value %s", value
);
1869 s
->main_pid
= (pid_t
) pid
;
1870 } else if (streq(key
, "main-pid-known")) {
1873 if ((b
= parse_boolean(value
)) < 0)
1874 log_debug("Failed to parse main-pid-known value %s", value
);
1876 s
->main_pid_known
= b
;
1877 } else if (streq(key
, "control-command")) {
1878 ServiceExecCommand id
;
1880 if ((id
= service_exec_command_from_string(value
)) < 0)
1881 log_debug("Failed to parse exec-command value %s", value
);
1883 s
->control_command_id
= id
;
1884 s
->control_command
= s
->exec_command
[id
];
1886 } else if (streq(key
, "socket-fd")) {
1889 if (safe_atoi(value
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
1890 log_debug("Failed to parse socket-fd value %s", value
);
1893 if (s
->socket_fd
>= 0)
1894 close_nointr_nofail(s
->socket_fd
);
1895 s
->socket_fd
= fdset_remove(fds
, fd
);
1898 log_debug("Unknown serialization key '%s'", key
);
1903 static UnitActiveState
service_active_state(Unit
*u
) {
1906 return state_translation_table
[SERVICE(u
)->state
];
1909 static const char *service_sub_state_to_string(Unit
*u
) {
1912 return service_state_to_string(SERVICE(u
)->state
);
1915 static bool service_check_gc(Unit
*u
) {
1916 Service
*s
= SERVICE(u
);
1920 return !!s
->sysv_path
;
1923 static bool service_check_snapshot(Unit
*u
) {
1924 Service
*s
= SERVICE(u
);
1928 return !s
->got_socket_fd
;
1931 static void service_sigchld_event(Unit
*u
, pid_t pid
, int code
, int status
) {
1932 Service
*s
= SERVICE(u
);
1938 success
= is_clean_exit(code
, status
);
1939 s
->failure
= s
->failure
|| !success
;
1941 if (s
->main_pid
== pid
) {
1943 exec_status_fill(&s
->main_exec_status
, pid
, code
, status
);
1946 if (s
->type
== SERVICE_SIMPLE
|| s
->type
== SERVICE_FINISH
) {
1947 assert(s
->exec_command
[SERVICE_EXEC_START
]);
1948 s
->exec_command
[SERVICE_EXEC_START
]->exec_status
= s
->main_exec_status
;
1951 log_debug("%s: main process exited, code=%s, status=%i", u
->meta
.id
, sigchld_code_to_string(code
), status
);
1953 /* The service exited, so the service is officially
1958 case SERVICE_START_POST
:
1959 case SERVICE_RELOAD
:
1961 /* Need to wait until the operation is
1966 if (s
->type
== SERVICE_FINISH
) {
1967 /* This was our main goal, so let's go on */
1969 service_enter_start_post(s
);
1971 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, false);
1974 assert(s
->type
== SERVICE_DBUS
);
1979 case SERVICE_RUNNING
:
1980 service_enter_running(s
, success
);
1983 case SERVICE_STOP_SIGTERM
:
1984 case SERVICE_STOP_SIGKILL
:
1986 if (!control_pid_good(s
))
1987 service_enter_stop_post(s
, success
);
1989 /* If there is still a control process, wait for that first */
1993 assert_not_reached("Uh, main process died at wrong time.");
1996 } else if (s
->control_pid
== pid
) {
1998 if (s
->control_command
)
1999 exec_status_fill(&s
->control_command
->exec_status
, pid
, code
, status
);
2003 log_debug("%s: control process exited, code=%s status=%i", u
->meta
.id
, sigchld_code_to_string(code
), status
);
2005 /* If we are shutting things down anyway we
2006 * don't care about failing commands. */
2008 if (s
->control_command
&& s
->control_command
->command_next
&& success
) {
2010 /* There is another command to *
2011 * execute, so let's do that. */
2013 log_debug("%s running next command for state %s", u
->meta
.id
, service_state_to_string(s
->state
));
2014 service_run_next(s
, success
);
2017 /* No further commands for this step, so let's
2018 * figure out what to do next */
2020 s
->control_command
= NULL
;
2021 s
->control_command_id
= _SERVICE_EXEC_COMMAND_INVALID
;
2023 log_debug("%s got final SIGCHLD for state %s", u
->meta
.id
, service_state_to_string(s
->state
));
2027 case SERVICE_START_PRE
:
2029 service_enter_start(s
);
2031 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, false);
2035 assert(s
->type
== SERVICE_FORKING
);
2037 /* Let's try to load the pid
2038 * file here if we can. We
2039 * ignore the return value,
2040 * since the PID file might
2041 * actually be created by a
2042 * START_POST script */
2046 service_load_pid_file(s
);
2048 service_enter_start_post(s
);
2050 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, false);
2054 case SERVICE_START_POST
:
2055 if (success
&& s
->pid_file
&& !s
->main_pid_known
) {
2058 /* Hmm, let's see if we can
2059 * load the pid now after the
2060 * start-post scripts got
2063 if ((r
= service_load_pid_file(s
)) < 0)
2064 log_warning("%s: failed to load PID file %s: %s", UNIT(s
)->meta
.id
, s
->pid_file
, strerror(-r
));
2069 case SERVICE_RELOAD
:
2071 service_enter_running(s
, true);
2073 service_enter_stop(s
, false);
2078 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, success
);
2081 case SERVICE_STOP_SIGTERM
:
2082 case SERVICE_STOP_SIGKILL
:
2083 if (main_pid_good(s
) <= 0)
2084 service_enter_stop_post(s
, success
);
2086 /* If there is still a service
2087 * process around, wait until
2088 * that one quit, too */
2091 case SERVICE_STOP_POST
:
2092 case SERVICE_FINAL_SIGTERM
:
2093 case SERVICE_FINAL_SIGKILL
:
2094 service_enter_dead(s
, success
, true);
2098 assert_not_reached("Uh, control process died at wrong time.");
2102 assert_not_reached("Got SIGCHLD for unkown PID");
2105 static void service_timer_event(Unit
*u
, uint64_t elapsed
, Watch
* w
) {
2106 Service
*s
= SERVICE(u
);
2109 assert(elapsed
== 1);
2111 assert(w
== &s
->timer_watch
);
2115 case SERVICE_START_PRE
:
2117 log_warning("%s operation timed out. Terminating.", u
->meta
.id
);
2118 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, false);
2121 case SERVICE_START_POST
:
2122 case SERVICE_RELOAD
:
2123 log_warning("%s operation timed out. Stopping.", u
->meta
.id
);
2124 service_enter_stop(s
, false);
2128 log_warning("%s stopping timed out. Terminating.", u
->meta
.id
);
2129 service_enter_signal(s
, SERVICE_STOP_SIGTERM
, false);
2132 case SERVICE_STOP_SIGTERM
:
2133 log_warning("%s stopping timed out. Killing.", u
->meta
.id
);
2134 service_enter_signal(s
, SERVICE_STOP_SIGKILL
, false);
2137 case SERVICE_STOP_SIGKILL
:
2138 /* Uh, wie sent a SIGKILL and it is still not gone?
2139 * Must be something we cannot kill, so let's just be
2140 * weirded out and continue */
2142 log_warning("%s still around after SIGKILL. Ignoring.", u
->meta
.id
);
2143 service_enter_stop_post(s
, false);
2146 case SERVICE_STOP_POST
:
2147 log_warning("%s stopping timed out (2). Terminating.", u
->meta
.id
);
2148 service_enter_signal(s
, SERVICE_FINAL_SIGTERM
, false);
2151 case SERVICE_FINAL_SIGTERM
:
2152 log_warning("%s stopping timed out (2). Killing.", u
->meta
.id
);
2153 service_enter_signal(s
, SERVICE_FINAL_SIGKILL
, false);
2156 case SERVICE_FINAL_SIGKILL
:
2157 log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", u
->meta
.id
);
2158 service_enter_dead(s
, false, true);
2161 case SERVICE_AUTO_RESTART
:
2162 log_debug("%s holdoff time over, scheduling restart.", u
->meta
.id
);
2163 service_enter_restart(s
);
2167 assert_not_reached("Timeout at wrong time.");
2171 static void service_cgroup_notify_event(Unit
*u
) {
2172 Service
*s
= SERVICE(u
);
2176 log_debug("%s: cgroup is empty", u
->meta
.id
);
2180 /* Waiting for SIGCHLD is usually more interesting,
2181 * because it includes return codes/signals. Which is
2182 * why we ignore the cgroup events for most cases,
2183 * except when we don't know pid which to expect the
2186 case SERVICE_RUNNING
:
2187 service_enter_running(s
, true);
2195 static int service_enumerate(Manager
*m
) {
2199 char *path
= NULL
, *fpath
= NULL
, *name
= NULL
;
2204 STRV_FOREACH(p
, m
->sysvrcnd_path
)
2205 for (i
= 0; i
< ELEMENTSOF(rcnd_table
); i
++) {
2210 if (asprintf(&path
, "%s/%s", *p
, rcnd_table
[i
].path
) < 0) {
2218 if (!(d
= opendir(path
))) {
2219 if (errno
!= ENOENT
)
2220 log_warning("opendir() failed on %s: %s", path
, strerror(errno
));
2225 while ((de
= readdir(d
))) {
2229 if (ignore_file(de
->d_name
))
2232 if (de
->d_name
[0] != 'S' && de
->d_name
[0] != 'K')
2235 if (strlen(de
->d_name
) < 4)
2238 a
= undecchar(de
->d_name
[1]);
2239 b
= undecchar(de
->d_name
[2]);
2246 if (asprintf(&fpath
, "%s/%s/%s", *p
, rcnd_table
[i
].path
, de
->d_name
) < 0) {
2251 if (access(fpath
, X_OK
) < 0) {
2253 if (errno
!= ENOENT
)
2254 log_warning("access() failed on %s: %s", fpath
, strerror(errno
));
2260 if (!(name
= sysv_translate_name(de
->d_name
+ 3))) {
2265 if ((r
= manager_load_unit_prepare(m
, name
, NULL
, &service
)) < 0) {
2266 log_warning("Failed to prepare unit %s: %s", name
, strerror(-r
));
2270 if (de
->d_name
[0] == 'S' &&
2271 (rcnd_table
[i
].type
== RUNLEVEL_UP
|| rcnd_table
[i
].type
== RUNLEVEL_BASIC
))
2272 SERVICE(service
)->sysv_start_priority
=
2273 MAX(a
*10 + b
, SERVICE(service
)->sysv_start_priority
);
2275 manager_dispatch_load_queue(m
);
2276 service
= unit_follow_merge(service
);
2278 if (de
->d_name
[0] == 'S') {
2279 Unit
*runlevel_target
;
2281 if ((r
= manager_load_unit(m
, rcnd_table
[i
].target
, NULL
, &runlevel_target
)) < 0)
2284 if ((r
= unit_add_dependency(runlevel_target
, UNIT_WANTS
, service
, true)) < 0)
2287 if ((r
= unit_add_dependency(service
, UNIT_BEFORE
, runlevel_target
, true)) < 0)
2290 } else if (de
->d_name
[0] == 'K' && rcnd_table
[i
].type
== RUNLEVEL_DOWN
) {
2291 Unit
*shutdown_target
;
2293 /* We honour K links only for
2294 * halt/reboot. For the normal
2295 * runlevels we assume the
2297 * implicitly added by the
2298 * core logic. Also, we don't
2299 * really distuingish here
2300 * between the runlevels 0 and
2301 * 6 and just add them to the
2302 * special shutdown target. */
2304 if ((r
= manager_load_unit(m
, SPECIAL_SHUTDOWN_TARGET
, NULL
, &shutdown_target
)) < 0)
2307 if ((r
= unit_add_dependency(service
, UNIT_CONFLICTS
, shutdown_target
, true)) < 0)
2310 if ((r
= unit_add_dependency(service
, UNIT_BEFORE
, shutdown_target
, true)) < 0)
2329 static void service_bus_name_owner_change(
2332 const char *old_owner
,
2333 const char *new_owner
) {
2335 Service
*s
= SERVICE(u
);
2340 assert(streq(s
->bus_name
, name
));
2341 assert(old_owner
|| new_owner
);
2343 if (old_owner
&& new_owner
)
2344 log_debug("%s's D-Bus name %s changed owner from %s to %s", u
->meta
.id
, name
, old_owner
, new_owner
);
2346 log_debug("%s's D-Bus name %s no longer registered by %s", u
->meta
.id
, name
, old_owner
);
2348 log_debug("%s's D-Bus name %s now registered by %s", u
->meta
.id
, name
, new_owner
);
2350 s
->bus_name_good
= !!new_owner
;
2352 if (s
->type
== SERVICE_DBUS
) {
2354 /* service_enter_running() will figure out what to
2356 if (s
->state
== SERVICE_RUNNING
)
2357 service_enter_running(s
, true);
2358 else if (s
->state
== SERVICE_START
&& new_owner
)
2359 service_enter_start_post(s
);
2361 } else if (new_owner
&&
2363 (s
->state
== SERVICE_START
||
2364 s
->state
== SERVICE_START_POST
||
2365 s
->state
== SERVICE_RUNNING
||
2366 s
->state
== SERVICE_RELOAD
)) {
2368 /* Try to acquire PID from bus service */
2369 log_debug("Trying to acquire PID from D-Bus name...");
2371 bus_query_pid(u
->meta
.manager
, name
);
2375 static void service_bus_query_pid_done(
2380 Service
*s
= SERVICE(u
);
2385 log_debug("%s's D-Bus name %s is now owned by process %u", u
->meta
.id
, name
, (unsigned) pid
);
2387 if (s
->main_pid
<= 0 &&
2388 (s
->state
== SERVICE_START
||
2389 s
->state
== SERVICE_START_POST
||
2390 s
->state
== SERVICE_RUNNING
||
2391 s
->state
== SERVICE_RELOAD
))
2395 int service_set_socket_fd(Service
*s
, int fd
) {
2399 /* This is called by the socket code when instantiating a new
2400 * service for a stream socket and the socket needs to be
2403 if (UNIT(s
)->meta
.load_state
!= UNIT_LOADED
)
2406 if (s
->socket_fd
>= 0)
2409 if (s
->state
!= SERVICE_DEAD
)
2413 s
->got_socket_fd
= true;
2417 static const char* const service_state_table
[_SERVICE_STATE_MAX
] = {
2418 [SERVICE_DEAD
] = "dead",
2419 [SERVICE_START_PRE
] = "start-pre",
2420 [SERVICE_START
] = "start",
2421 [SERVICE_START_POST
] = "start-post",
2422 [SERVICE_RUNNING
] = "running",
2423 [SERVICE_EXITED
] = "exited",
2424 [SERVICE_RELOAD
] = "reload",
2425 [SERVICE_STOP
] = "stop",
2426 [SERVICE_STOP_SIGTERM
] = "stop-sigterm",
2427 [SERVICE_STOP_SIGKILL
] = "stop-sigkill",
2428 [SERVICE_STOP_POST
] = "stop-post",
2429 [SERVICE_FINAL_SIGTERM
] = "final-sigterm",
2430 [SERVICE_FINAL_SIGKILL
] = "final-sigkill",
2431 [SERVICE_MAINTAINANCE
] = "maintainance",
2432 [SERVICE_AUTO_RESTART
] = "auto-restart",
2435 DEFINE_STRING_TABLE_LOOKUP(service_state
, ServiceState
);
2437 static const char* const service_restart_table
[_SERVICE_RESTART_MAX
] = {
2438 [SERVICE_ONCE
] = "once",
2439 [SERVICE_RESTART_ON_SUCCESS
] = "restart-on-success",
2440 [SERVICE_RESTART_ALWAYS
] = "restart-always",
2443 DEFINE_STRING_TABLE_LOOKUP(service_restart
, ServiceRestart
);
2445 static const char* const service_type_table
[_SERVICE_TYPE_MAX
] = {
2446 [SERVICE_FORKING
] = "forking",
2447 [SERVICE_SIMPLE
] = "simple",
2448 [SERVICE_FINISH
] = "finish",
2449 [SERVICE_DBUS
] = "dbus"
2452 DEFINE_STRING_TABLE_LOOKUP(service_type
, ServiceType
);
2454 static const char* const service_exec_command_table
[_SERVICE_EXEC_COMMAND_MAX
] = {
2455 [SERVICE_EXEC_START_PRE
] = "ExecStartPre",
2456 [SERVICE_EXEC_START
] = "ExecStart",
2457 [SERVICE_EXEC_START_POST
] = "ExecStartPost",
2458 [SERVICE_EXEC_RELOAD
] = "ExecReload",
2459 [SERVICE_EXEC_STOP
] = "ExecStop",
2460 [SERVICE_EXEC_STOP_POST
] = "ExecStopPost",
2463 DEFINE_STRING_TABLE_LOOKUP(service_exec_command
, ServiceExecCommand
);
2465 const UnitVTable service_vtable
= {
2466 .suffix
= ".service",
2468 .init
= service_init
,
2469 .done
= service_done
,
2470 .load
= service_load
,
2472 .coldplug
= service_coldplug
,
2474 .dump
= service_dump
,
2476 .start
= service_start
,
2477 .stop
= service_stop
,
2478 .reload
= service_reload
,
2480 .can_reload
= service_can_reload
,
2482 .serialize
= service_serialize
,
2483 .deserialize_item
= service_deserialize_item
,
2485 .active_state
= service_active_state
,
2486 .sub_state_to_string
= service_sub_state_to_string
,
2488 .check_gc
= service_check_gc
,
2489 .check_snapshot
= service_check_snapshot
,
2491 .sigchld_event
= service_sigchld_event
,
2492 .timer_event
= service_timer_event
,
2494 .cgroup_notify_empty
= service_cgroup_notify_event
,
2496 .bus_name_owner_change
= service_bus_name_owner_change
,
2497 .bus_query_pid_done
= service_bus_query_pid_done
,
2499 .bus_message_handler
= bus_service_message_handler
,
2501 .enumerate
= service_enumerate