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_BASIC_TARGET, RUNLEVEL_BASIC },
63 /* Debian style rcS.d */
64 { "rcS.d", SPECIAL_BASIC_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 "$local_fs", SPECIAL_LOCAL_FS_TARGET,
195 "$network", SPECIAL_NETWORK_TARGET,
196 "$named", SPECIAL_NSS_LOOKUP_TARGET,
197 "$portmap", SPECIAL_RPCBIND_TARGET,
198 "$remote_fs", SPECIAL_REMOTE_FS_TARGET,
199 "$syslog", SPECIAL_SYSLOG_TARGET,
200 "$time", SPECIAL_RTC_SET_TARGET
206 for (i = 0; i < ELEMENTSOF(table); i += 2)
207 if (streq(table[i], name)) {
208 if (!(r = strdup(table[i+1])))
217 if (!(r = sysv_translate_name(name)))
228 static int sysv_fix_order(Service *s) {
234 if (s->sysv_start_priority < 0)
237 /* For each pair of services where at least one lacks a LSB
238 * header, we use the start priority value to order things. */
240 LIST_FOREACH(units_per_type, other, UNIT(s)->meta.manager->units_per_type[UNIT_SERVICE]) {
244 t = (Service*) other;
249 if (t->sysv_start_priority < 0)
252 /* If both units have modern headers we don't care
253 * about the priorities */
254 if ((!s->sysv_path || s->sysv_has_lsb) &&
255 (!t->sysv_path || t->sysv_has_lsb))
258 if (t->sysv_start_priority < s->sysv_start_priority)
260 else if (t->sysv_start_priority > s->sysv_start_priority)
265 /* FIXME: Maybe we should compare the name here lexicographically? */
267 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
274 static ExecCommand *exec_command_new(const char *path, const char *arg1) {
277 if (!(c = new0(ExecCommand, 1)))
280 if (!(c->path = strdup(path))) {
285 if (!(c->argv = strv_new(path, arg1, NULL))) {
294 static int sysv_exec_commands(Service *s) {
298 assert(s->sysv_path);
300 if (!(c = exec_command_new(s->sysv_path, "start")))
302 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
304 if (!(c = exec_command_new(s->sysv_path, "stop")))
306 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
308 if (!(c = exec_command_new(s->sysv_path, "reload")))
310 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
315 static int service_load_sysv_path(Service *s, const char *path) {
332 if (!(f = fopen(path, "re"))) {
333 r = errno == ENOENT ? 0 : -errno;
337 s->type = SERVICE_FORKING;
338 s->restart = SERVICE_ONCE;
341 if (!(s->sysv_path = strdup(path))) {
347 char l[LINE_MAX], *t;
349 if (!fgets(l, sizeof(l), f)) {
354 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
364 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
366 s->sysv_has_lsb = true;
370 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
376 t += strspn(t, WHITESPACE);
378 if (state == NORMAL) {
380 /* Try to parse Red Hat style chkconfig headers */
382 if (startswith(t, "chkconfig:")) {
384 char runlevels[16], *k;
388 if (sscanf(t+10, "%15s %i %*i",
390 &start_priority) != 2) {
392 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
396 /* A start priority gathered from the
397 * symlink farms is preferred over the
398 * data from the LSB header. */
399 if (start_priority < 0 || start_priority > 99)
400 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
401 else if (s->sysv_start_priority < 0)
402 s->sysv_start_priority = start_priority;
404 char_array_0(runlevels);
405 k = delete_chars(runlevels, WHITESPACE "-");
410 if (!(d = strdup(k))) {
415 free(s->sysv_runlevels);
416 s->sysv_runlevels = d;
419 } else if (startswith(t, "description:")) {
421 size_t k = strlen(t);
424 if (t[k-1] == '\\') {
429 if (!(d = strdup(strstrip(t+12)))) {
434 free(u->meta.description);
435 u->meta.description = d;
437 } else if (startswith(t, "pidfile:")) {
444 if (!path_is_absolute(fn)) {
445 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
449 if (!(fn = strdup(fn))) {
458 } else if (state == DESCRIPTION) {
460 /* Try to parse Red Hat style description
463 size_t k = strlen(t);
471 assert(u->meta.description);
472 if (asprintf(&d, "%s %s", u->meta.description, strstrip(t)) < 0) {
477 free(u->meta.description);
478 u->meta.description = d;
480 } else if (state == LSB || state == LSB_DESCRIPTION) {
482 if (startswith(t, "Provides:")) {
488 FOREACH_WORD(w, z, t+9, i) {
491 if (!(n = strndup(w, z))) {
496 r = sysv_translate_facility(n, &m);
505 if (unit_name_to_type(m) == UNIT_SERVICE)
506 r = unit_add_name(u, m);
508 if ((r = unit_add_dependency_by_name_inverse(u, UNIT_REQUIRES, m, NULL, true)) >= 0)
509 r = unit_add_dependency_by_name(u, UNIT_BEFORE, m, NULL, true);
518 } else if (startswith(t, "Required-Start:") ||
519 startswith(t, "Should-Start:")) {
525 FOREACH_WORD(w, z, strchr(t, ':')+1, i) {
528 if (!(n = strndup(w, z))) {
533 r = sysv_translate_facility(n, &m);
542 r = unit_add_dependency_by_name(u, UNIT_AFTER, m, NULL, true);
548 } else if (startswith(t, "Default-Start:")) {
553 k = delete_chars(t+14, WHITESPACE "-");
556 if (!(d = strdup(k))) {
561 free(s->sysv_runlevels);
562 s->sysv_runlevels = d;
565 } else if (startswith(t, "Description:")) {
568 state = LSB_DESCRIPTION;
570 if (!(d = strdup(strstrip(t+12)))) {
575 free(u->meta.description);
576 u->meta.description = d;
578 } else if (startswith(t, "Short-Description:") &&
579 !u->meta.description) {
582 /* We use the short description only
583 * if no long description is set. */
587 if (!(d = strdup(strstrip(t+18)))) {
592 u->meta.description = d;
594 } else if (state == LSB_DESCRIPTION) {
596 if (startswith(l, "#\t") || startswith(l, "# ")) {
599 assert(u->meta.description);
600 if (asprintf(&d, "%s %s", u->meta.description, t) < 0) {
605 free(u->meta.description);
606 u->meta.description = d;
613 if ((r = sysv_exec_commands(s)) < 0)
616 if (!s->sysv_runlevels || chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
617 /* If there a runlevels configured for this service
618 * but none of the standard ones, then we assume this
619 * is some special kind of service (which might be
620 * needed for early boot) and don't create any links
623 if ((r = unit_add_dependency_by_name(u, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0 ||
624 (r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
628 /* Don't timeout special services during boot (like fsck) */
631 /* Special setting for all SysV services */
632 s->valid_no_process = true;
633 s->kill_mode = KILL_PROCESS_GROUP;
635 /* For SysV services log output should go to the console */
636 s->exec_context.std_input = EXEC_INPUT_NULL;
637 s->exec_context.std_output = EXEC_OUTPUT_TTY;
638 s->exec_context.std_error = EXEC_OUTPUT_TTY;
640 u->meta.load_state = UNIT_LOADED;
651 static int service_load_sysv_name(Service *s, const char *name) {
657 /* For SysV services we strip the boot. or .sh
658 * prefixes/suffixes. */
659 if (startswith(name, "boot.") ||
660 endswith(name, ".sh.service"))
663 STRV_FOREACH(p, UNIT(s)->meta.manager->sysvinit_path) {
667 if (asprintf(&path, "%s/%s", *p, name) < 0)
670 assert(endswith(path, ".service"));
671 path[strlen(path)-8] = 0;
673 r = service_load_sysv_path(s, path);
675 if (r >= 0 && UNIT(s)->meta.load_state == UNIT_STUB) {
676 /* Try Debian style xxx.sh source'able init scripts */
678 r = service_load_sysv_path(s, path);
683 if (r >= 0 && UNIT(s)->meta.load_state == UNIT_STUB) {
684 /* Try Suse style boot.xxx init scripts */
686 if (asprintf(&path, "%s/boot.%s", *p, name) < 0)
689 path[strlen(path)-8] = 0;
690 r = service_load_sysv_path(s, path);
697 if ((UNIT(s)->meta.load_state != UNIT_STUB))
704 static int service_load_sysv(Service *s) {
711 /* Load service data from SysV init scripts, preferably with
714 if (strv_isempty(UNIT(s)->meta.manager->sysvinit_path))
717 if ((t = UNIT(s)->meta.id))
718 if ((r = service_load_sysv_name(s, t)) < 0)
721 if (UNIT(s)->meta.load_state == UNIT_STUB)
722 SET_FOREACH(t, UNIT(s)->meta.names, i) {
723 if (t == UNIT(s)->meta.id)
726 if ((r == service_load_sysv_name(s, t)) < 0)
729 if (UNIT(s)->meta.load_state != UNIT_STUB)
736 static int service_add_bus_name(Service *s) {
743 if (asprintf(&n, "dbus-%s.service", s->bus_name) < 0)
746 r = unit_merge_by_name(UNIT(s), n);
752 static int service_verify(Service *s) {
755 if (UNIT(s)->meta.load_state != UNIT_LOADED)
758 if (!s->exec_command[SERVICE_EXEC_START]) {
759 log_error("%s lacks ExecStart setting. Refusing.", UNIT(s)->meta.id);
763 if (s->type == SERVICE_DBUS && !s->bus_name) {
764 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s)->meta.id);
771 static int service_load(Unit *u) {
773 Service *s = SERVICE(u);
777 /* Load a .service file */
778 if ((r = unit_load_fragment(u)) < 0)
781 /* Load a classic init script as a fallback, if we couldn't find anything */
782 if (u->meta.load_state == UNIT_STUB)
783 if ((r = service_load_sysv(s)) < 0)
786 /* Still nothing found? Then let's give up */
787 if (u->meta.load_state == UNIT_STUB)
790 /* We were able to load something, then let's add in the
791 * dropin directories. */
792 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
795 /* This is a new unit? Then let's add in some extras */
796 if (u->meta.load_state == UNIT_LOADED) {
797 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
800 if ((r = unit_add_default_cgroup(u)) < 0)
803 if ((r = sysv_fix_order(s)) < 0)
807 if ((r = service_add_bus_name(s)) < 0)
810 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
815 return service_verify(s);
818 static void service_dump(Unit *u, FILE *f, const char *prefix) {
820 ServiceExecCommand c;
821 Service *s = SERVICE(u);
827 p2 = strappend(prefix, "\t");
828 prefix2 = p2 ? p2 : prefix;
831 "%sService State: %s\n"
832 "%sPermissionsStartOnly: %s\n"
833 "%sRootDirectoryStartOnly: %s\n"
834 "%sValidNoProcess: %s\n"
837 prefix, service_state_to_string(s->state),
838 prefix, yes_no(s->permissions_start_only),
839 prefix, yes_no(s->root_directory_start_only),
840 prefix, yes_no(s->valid_no_process),
841 prefix, kill_mode_to_string(s->kill_mode),
842 prefix, service_type_to_string(s->type));
844 if (s->control_pid > 0)
846 "%sControl PID: %llu\n",
847 prefix, (unsigned long long) s->control_pid);
851 "%sMain PID: %llu\n",
852 prefix, (unsigned long long) s->main_pid);
857 prefix, s->pid_file);
862 "%sBus Name Good: %s\n",
864 prefix, yes_no(s->bus_name_good));
866 exec_context_dump(&s->exec_context, f, prefix);
868 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
870 if (!s->exec_command[c])
873 fprintf(f, "%s-> %s:\n",
874 prefix, service_exec_command_to_string(c));
876 exec_command_dump_list(s->exec_command[c], f, prefix2);
881 "%sSysV Init Script Path: %s\n"
882 "%sSysV Init Script has LSB Header: %s\n",
883 prefix, s->sysv_path,
884 prefix, yes_no(s->sysv_has_lsb));
886 if (s->sysv_start_priority >= 0)
888 "%sSysVStartPriority: %i\n",
889 prefix, s->sysv_start_priority);
891 if (s->sysv_runlevels)
892 fprintf(f, "%sSysVRunLevels: %s\n",
893 prefix, s->sysv_runlevels);
898 static int service_load_pid_file(Service *s) {
905 if (s->main_pid_known)
908 assert(s->main_pid <= 0);
913 if ((r = read_one_line_file(s->pid_file, &k)) < 0)
916 if ((r = safe_atolu(k, &p)) < 0) {
921 if ((unsigned long) (pid_t) p != p)
924 if (kill((pid_t) p, 0) < 0 && errno != EPERM) {
925 log_warning("PID %llu read from file %s does not exist. Your service or init script might be broken.",
926 (unsigned long long) p, s->pid_file);
930 if ((r = unit_watch_pid(UNIT(s), (pid_t) p)) < 0)
931 /* FIXME: we need to do something here */
934 s->main_pid = (pid_t) p;
935 s->main_pid_known = true;
940 static int service_get_sockets(Service *s, Set **_set) {
949 /* Collects all Socket objects that belong to this
950 * service. Note that a service might have multiple sockets
951 * via multiple names. */
953 if (!(set = set_new(NULL, NULL)))
956 SET_FOREACH(t, UNIT(s)->meta.names, i) {
960 /* Look for all socket objects that go by any of our
961 * units and collect their fds */
963 if (!(k = unit_name_change_suffix(t, ".socket"))) {
968 p = manager_get_unit(UNIT(s)->meta.manager, k);
974 if ((r = set_put(set, p)) < 0)
986 static int service_notify_sockets_dead(Service *s) {
994 /* Notifies all our sockets when we die */
995 if ((r = service_get_sockets(s, &set)) < 0)
998 SET_FOREACH(sock, set, i)
999 socket_notify_service_dead(sock);
1006 static void service_set_state(Service *s, ServiceState state) {
1007 ServiceState old_state;
1010 old_state = s->state;
1013 if (state != SERVICE_START_PRE &&
1014 state != SERVICE_START &&
1015 state != SERVICE_START_POST &&
1016 state != SERVICE_RELOAD &&
1017 state != SERVICE_STOP &&
1018 state != SERVICE_STOP_SIGTERM &&
1019 state != SERVICE_STOP_SIGKILL &&
1020 state != SERVICE_STOP_POST &&
1021 state != SERVICE_FINAL_SIGTERM &&
1022 state != SERVICE_FINAL_SIGKILL &&
1023 state != SERVICE_AUTO_RESTART)
1024 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1026 if (state != SERVICE_START &&
1027 state != SERVICE_START_POST &&
1028 state != SERVICE_RUNNING &&
1029 state != SERVICE_RELOAD &&
1030 state != SERVICE_STOP &&
1031 state != SERVICE_STOP_SIGTERM &&
1032 state != SERVICE_STOP_SIGKILL)
1033 service_unwatch_main_pid(s);
1035 if (state != SERVICE_START_PRE &&
1036 state != SERVICE_START &&
1037 state != SERVICE_START_POST &&
1038 state != SERVICE_RELOAD &&
1039 state != SERVICE_STOP &&
1040 state != SERVICE_STOP_SIGTERM &&
1041 state != SERVICE_STOP_SIGKILL &&
1042 state != SERVICE_STOP_POST &&
1043 state != SERVICE_FINAL_SIGTERM &&
1044 state != SERVICE_FINAL_SIGKILL) {
1045 service_unwatch_control_pid(s);
1046 s->control_command = NULL;
1047 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1050 if (state == SERVICE_DEAD ||
1051 state == SERVICE_STOP ||
1052 state == SERVICE_STOP_SIGTERM ||
1053 state == SERVICE_STOP_SIGKILL ||
1054 state == SERVICE_STOP_POST ||
1055 state == SERVICE_FINAL_SIGTERM ||
1056 state == SERVICE_FINAL_SIGKILL ||
1057 state == SERVICE_MAINTAINANCE ||
1058 state == SERVICE_AUTO_RESTART)
1059 service_notify_sockets_dead(s);
1061 if (state != SERVICE_START_PRE &&
1062 state != SERVICE_START &&
1063 !(state == SERVICE_DEAD && UNIT(s)->meta.job))
1064 service_close_socket_fd(s);
1066 if (old_state != state)
1067 log_debug("%s changed %s -> %s", UNIT(s)->meta.id, service_state_to_string(old_state), service_state_to_string(state));
1069 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
1072 static int service_coldplug(Unit *u) {
1073 Service *s = SERVICE(u);
1077 assert(s->state == SERVICE_DEAD);
1079 if (s->deserialized_state != s->state) {
1081 if (s->deserialized_state == SERVICE_START_PRE ||
1082 s->deserialized_state == SERVICE_START ||
1083 s->deserialized_state == SERVICE_START_POST ||
1084 s->deserialized_state == SERVICE_RELOAD ||
1085 s->deserialized_state == SERVICE_STOP ||
1086 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1087 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1088 s->deserialized_state == SERVICE_STOP_POST ||
1089 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1090 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
1091 s->deserialized_state == SERVICE_AUTO_RESTART) {
1093 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1096 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1098 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1103 if ((s->deserialized_state == SERVICE_START &&
1104 (s->type == SERVICE_FORKING ||
1105 s->type == SERVICE_DBUS)) ||
1106 s->deserialized_state == SERVICE_START_POST ||
1107 s->deserialized_state == SERVICE_RUNNING ||
1108 s->deserialized_state == SERVICE_RELOAD ||
1109 s->deserialized_state == SERVICE_STOP ||
1110 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1111 s->deserialized_state == SERVICE_STOP_SIGKILL)
1112 if (s->main_pid > 0)
1113 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1116 if (s->deserialized_state == SERVICE_START_PRE ||
1117 s->deserialized_state == SERVICE_START ||
1118 s->deserialized_state == SERVICE_START_POST ||
1119 s->deserialized_state == SERVICE_RELOAD ||
1120 s->deserialized_state == SERVICE_STOP ||
1121 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1122 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1123 s->deserialized_state == SERVICE_STOP_POST ||
1124 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1125 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1126 if (s->control_pid > 0)
1127 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1130 service_set_state(s, s->deserialized_state);
1136 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1140 unsigned rn_fds = 0;
1148 if ((r = service_get_sockets(s, &set)) < 0)
1151 SET_FOREACH(sock, set, i) {
1155 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
1167 if (!(t = new(int, rn_fds+cn_fds))) {
1173 memcpy(t, rfds, rn_fds);
1174 memcpy(t+rn_fds, cfds, cn_fds);
1179 rn_fds = rn_fds+cn_fds;
1197 static int service_spawn(
1202 bool apply_permissions,
1217 if (s->socket_fd >= 0) {
1218 fds = &s->socket_fd;
1220 } else if ((r = service_collect_fds(s, &fds, &n_fds)) < 0)
1224 if (timeout && s->timeout_usec) {
1225 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1228 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1230 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1239 s->meta.manager->environment,
1242 UNIT(s)->meta.manager->confirm_spawn,
1243 UNIT(s)->meta.cgroup_bondings,
1251 if (s->socket_fd >= 0)
1252 service_close_socket_fd(s);
1257 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1258 /* FIXME: we need to do something here */
1269 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1274 static int main_pid_good(Service *s) {
1277 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1280 /* If we know the pid file, then lets just check if it is
1282 if (s->main_pid_known)
1283 return s->main_pid > 0;
1285 /* We don't know the pid */
1289 static int control_pid_good(Service *s) {
1292 return s->control_pid > 0;
1295 static int cgroup_good(Service *s) {
1300 if (s->valid_no_process)
1303 if ((r = cgroup_bonding_is_empty_list(UNIT(s)->meta.cgroup_bondings)) < 0)
1309 static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1316 if (allow_restart &&
1318 (s->restart == SERVICE_RESTART_ALWAYS ||
1319 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
1321 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
1324 service_set_state(s, SERVICE_AUTO_RESTART);
1326 service_set_state(s, s->failure ? SERVICE_MAINTAINANCE : SERVICE_DEAD);
1331 log_warning("%s failed to run install restart timer: %s", UNIT(s)->meta.id, strerror(-r));
1332 service_enter_dead(s, false, false);
1335 static void service_enter_signal(Service *s, ServiceState state, bool success);
1337 static void service_enter_stop_post(Service *s, bool success) {
1344 service_unwatch_control_pid(s);
1346 s->control_command_id = SERVICE_EXEC_STOP_POST;
1347 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
1348 if ((r = service_spawn(s,
1352 !s->permissions_start_only,
1353 !s->root_directory_start_only,
1354 &s->control_pid)) < 0)
1358 service_set_state(s, SERVICE_STOP_POST);
1360 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
1365 log_warning("%s failed to run stop-post executable: %s", UNIT(s)->meta.id, strerror(-r));
1366 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1369 static void service_enter_signal(Service *s, ServiceState state, bool success) {
1378 if (s->kill_mode != KILL_NONE) {
1379 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
1381 if (s->kill_mode == KILL_CONTROL_GROUP) {
1383 if ((r = cgroup_bonding_kill_list(UNIT(s)->meta.cgroup_bondings, sig)) < 0) {
1384 if (r != -EAGAIN && r != -ESRCH)
1393 if (s->main_pid > 0) {
1394 if (kill(s->kill_mode == KILL_PROCESS ? s->main_pid : -s->main_pid, sig) < 0 && errno != ESRCH)
1400 if (s->control_pid > 0) {
1401 if (kill(s->kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH)
1412 if (sent && (s->main_pid > 0 || s->control_pid > 0)) {
1413 if (s->timeout_usec > 0)
1414 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1417 service_set_state(s, state);
1418 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1419 service_enter_stop_post(s, true);
1421 service_enter_dead(s, true, true);
1426 log_warning("%s failed to kill processes: %s", UNIT(s)->meta.id, strerror(-r));
1428 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1429 service_enter_stop_post(s, false);
1431 service_enter_dead(s, false, true);
1434 static void service_enter_stop(Service *s, bool success) {
1441 service_unwatch_control_pid(s);
1443 s->control_command_id = SERVICE_EXEC_STOP;
1444 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
1445 if ((r = service_spawn(s,
1449 !s->permissions_start_only,
1450 !s->root_directory_start_only,
1451 &s->control_pid)) < 0)
1454 service_set_state(s, SERVICE_STOP);
1456 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1461 log_warning("%s failed to run stop executable: %s", UNIT(s)->meta.id, strerror(-r));
1462 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1465 static void service_enter_running(Service *s, bool success) {
1471 if (main_pid_good(s) != 0 &&
1472 cgroup_good(s) != 0 &&
1473 (s->bus_name_good || s->type != SERVICE_DBUS))
1474 service_set_state(s, SERVICE_RUNNING);
1475 else if (s->valid_no_process)
1476 service_set_state(s, SERVICE_EXITED);
1478 service_enter_stop(s, true);
1481 static void service_enter_start_post(Service *s) {
1485 service_unwatch_control_pid(s);
1487 s->control_command_id = SERVICE_EXEC_START_POST;
1488 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
1489 if ((r = service_spawn(s,
1493 !s->permissions_start_only,
1494 !s->root_directory_start_only,
1495 &s->control_pid)) < 0)
1499 service_set_state(s, SERVICE_START_POST);
1501 service_enter_running(s, true);
1506 log_warning("%s failed to run start-post executable: %s", UNIT(s)->meta.id, strerror(-r));
1507 service_enter_stop(s, false);
1510 static void service_enter_start(Service *s) {
1516 assert(s->exec_command[SERVICE_EXEC_START]);
1517 assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
1519 if (s->type == SERVICE_FORKING)
1520 service_unwatch_control_pid(s);
1522 service_unwatch_main_pid(s);
1524 if ((r = service_spawn(s,
1525 s->exec_command[SERVICE_EXEC_START],
1526 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS,
1533 if (s->type == SERVICE_SIMPLE) {
1534 /* For simple services we immediately start
1535 * the START_POST binaries. */
1538 s->main_pid_known = true;
1540 service_enter_start_post(s);
1542 } else if (s->type == SERVICE_FORKING) {
1544 /* For forking services we wait until the start
1545 * process exited. */
1547 s->control_pid = pid;
1549 s->control_command_id = SERVICE_EXEC_START;
1550 s->control_command = s->exec_command[SERVICE_EXEC_START];
1551 service_set_state(s, SERVICE_START);
1553 } else if (s->type == SERVICE_FINISH ||
1554 s->type == SERVICE_DBUS) {
1556 /* For finishing services we wait until the start
1557 * process exited, too, but it is our main process. */
1559 /* For D-Bus services we know the main pid right away,
1560 * but wait for the bus name to appear on the bus. */
1563 s->main_pid_known = true;
1565 service_set_state(s, SERVICE_START);
1567 assert_not_reached("Unknown service type");
1572 log_warning("%s failed to run start exectuable: %s", UNIT(s)->meta.id, strerror(-r));
1573 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1576 static void service_enter_start_pre(Service *s) {
1581 service_unwatch_control_pid(s);
1583 s->control_command_id = SERVICE_EXEC_START_PRE;
1584 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
1585 if ((r = service_spawn(s,
1589 !s->permissions_start_only,
1590 !s->root_directory_start_only,
1591 &s->control_pid)) < 0)
1594 service_set_state(s, SERVICE_START_PRE);
1596 service_enter_start(s);
1601 log_warning("%s failed to run start-pre executable: %s", UNIT(s)->meta.id, strerror(-r));
1602 service_enter_dead(s, false, true);
1605 static void service_enter_restart(Service *s) {
1609 service_enter_dead(s, true, false);
1611 if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL)) < 0)
1614 log_debug("%s scheduled restart job.", UNIT(s)->meta.id);
1619 log_warning("%s failed to schedule restart job: %s", UNIT(s)->meta.id, strerror(-r));
1620 service_enter_dead(s, false, false);
1623 static void service_enter_reload(Service *s) {
1628 service_unwatch_control_pid(s);
1630 s->control_command_id = SERVICE_EXEC_RELOAD;
1631 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
1632 if ((r = service_spawn(s,
1636 !s->permissions_start_only,
1637 !s->root_directory_start_only,
1638 &s->control_pid)) < 0)
1641 service_set_state(s, SERVICE_RELOAD);
1643 service_enter_running(s, true);
1648 log_warning("%s failed to run reload executable: %s", UNIT(s)->meta.id, strerror(-r));
1649 service_enter_stop(s, false);
1652 static void service_run_next(Service *s, bool success) {
1656 assert(s->control_command);
1657 assert(s->control_command->command_next);
1662 s->control_command = s->control_command->command_next;
1664 service_unwatch_control_pid(s);
1666 if ((r = service_spawn(s,
1670 !s->permissions_start_only,
1671 !s->root_directory_start_only,
1672 &s->control_pid)) < 0)
1678 log_warning("%s failed to run spawn next executable: %s", UNIT(s)->meta.id, strerror(-r));
1680 if (s->state == SERVICE_START_PRE)
1681 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1682 else if (s->state == SERVICE_STOP)
1683 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1684 else if (s->state == SERVICE_STOP_POST)
1685 service_enter_dead(s, false, true);
1687 service_enter_stop(s, false);
1690 static int service_start(Unit *u) {
1691 Service *s = SERVICE(u);
1695 /* We cannot fulfill this request right now, try again later
1697 if (s->state == SERVICE_STOP ||
1698 s->state == SERVICE_STOP_SIGTERM ||
1699 s->state == SERVICE_STOP_SIGKILL ||
1700 s->state == SERVICE_STOP_POST ||
1701 s->state == SERVICE_FINAL_SIGTERM ||
1702 s->state == SERVICE_FINAL_SIGKILL)
1705 /* Already on it! */
1706 if (s->state == SERVICE_START_PRE ||
1707 s->state == SERVICE_START ||
1708 s->state == SERVICE_START_POST)
1711 assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTAINANCE || s->state == SERVICE_AUTO_RESTART);
1713 /* Make sure we don't enter a busy loop of some kind. */
1714 if (!ratelimit_test(&s->ratelimit)) {
1715 log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
1720 s->main_pid_known = false;
1721 s->allow_restart = true;
1723 service_enter_start_pre(s);
1727 static int service_stop(Unit *u) {
1728 Service *s = SERVICE(u);
1732 /* Cannot do this now */
1733 if (s->state == SERVICE_START_PRE ||
1734 s->state == SERVICE_START ||
1735 s->state == SERVICE_START_POST ||
1736 s->state == SERVICE_RELOAD)
1740 if (s->state == SERVICE_STOP ||
1741 s->state == SERVICE_STOP_SIGTERM ||
1742 s->state == SERVICE_STOP_SIGKILL ||
1743 s->state == SERVICE_STOP_POST ||
1744 s->state == SERVICE_FINAL_SIGTERM ||
1745 s->state == SERVICE_FINAL_SIGKILL)
1748 if (s->state == SERVICE_AUTO_RESTART) {
1749 service_set_state(s, SERVICE_DEAD);
1753 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
1755 /* This is a user request, so don't do restarts on this
1757 s->allow_restart = false;
1759 service_enter_stop(s, true);
1763 static int service_reload(Unit *u) {
1764 Service *s = SERVICE(u);
1768 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
1770 service_enter_reload(s);
1774 static bool service_can_reload(Unit *u) {
1775 Service *s = SERVICE(u);
1779 return !!s->exec_command[SERVICE_EXEC_RELOAD];
1782 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
1783 Service *s = SERVICE(u);
1789 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
1790 unit_serialize_item(u, f, "failure", yes_no(s->failure));
1792 if (s->control_pid > 0)
1793 unit_serialize_item_format(u, f, "control-pid", "%u", (unsigned) (s->control_pid));
1795 if (s->main_pid > 0)
1796 unit_serialize_item_format(u, f, "main-pid", "%u", (unsigned) (s->main_pid));
1798 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
1800 /* There's a minor uncleanliness here: if there are multiple
1801 * commands attached here, we will start from the first one
1803 if (s->control_command_id >= 0)
1804 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
1806 if (s->socket_fd >= 0) {
1809 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
1812 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
1818 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
1819 Service *s = SERVICE(u);
1827 if (streq(key, "state")) {
1830 if ((state = service_state_from_string(value)) < 0)
1831 log_debug("Failed to parse state value %s", value);
1833 s->deserialized_state = state;
1834 } else if (streq(key, "failure")) {
1837 if ((b = parse_boolean(value)) < 0)
1838 log_debug("Failed to parse failure value %s", value);
1840 s->failure = b || s->failure;
1841 } else if (streq(key, "control-pid")) {
1844 if ((r = safe_atou(value, &pid)) < 0 || pid <= 0)
1845 log_debug("Failed to parse control-pid value %s", value);
1847 s->control_pid = (pid_t) pid;
1848 } else if (streq(key, "main-pid")) {
1851 if ((r = safe_atou(value, &pid)) < 0 || pid <= 0)
1852 log_debug("Failed to parse main-pid value %s", value);
1854 s->main_pid = (pid_t) pid;
1855 } else if (streq(key, "main-pid-known")) {
1858 if ((b = parse_boolean(value)) < 0)
1859 log_debug("Failed to parse main-pid-known value %s", value);
1861 s->main_pid_known = b;
1862 } else if (streq(key, "control-command")) {
1863 ServiceExecCommand id;
1865 if ((id = service_exec_command_from_string(value)) < 0)
1866 log_debug("Failed to parse exec-command value %s", value);
1868 s->control_command_id = id;
1869 s->control_command = s->exec_command[id];
1871 } else if (streq(key, "socket-fd")) {
1874 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
1875 log_debug("Failed to parse socket-fd value %s", value);
1878 if (s->socket_fd >= 0)
1879 close_nointr_nofail(s->socket_fd);
1880 s->socket_fd = fdset_remove(fds, fd);
1883 log_debug("Unknown serialization key '%s'", key);
1888 static UnitActiveState service_active_state(Unit *u) {
1891 return state_translation_table[SERVICE(u)->state];
1894 static const char *service_sub_state_to_string(Unit *u) {
1897 return service_state_to_string(SERVICE(u)->state);
1900 static bool service_check_gc(Unit *u) {
1901 Service *s = SERVICE(u);
1905 return !!s->sysv_path;
1908 static bool service_check_snapshot(Unit *u) {
1909 Service *s = SERVICE(u);
1913 return !s->got_socket_fd;
1916 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
1917 Service *s = SERVICE(u);
1923 success = is_clean_exit(code, status);
1924 s->failure = s->failure || !success;
1926 if (s->main_pid == pid) {
1928 exec_status_fill(&s->main_exec_status, pid, code, status);
1931 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_FINISH) {
1932 assert(s->exec_command[SERVICE_EXEC_START]);
1933 s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
1936 log_debug("%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status);
1938 /* The service exited, so the service is officially
1943 case SERVICE_START_POST:
1944 case SERVICE_RELOAD:
1946 /* Need to wait until the operation is
1951 assert(s->type == SERVICE_FINISH);
1953 /* This was our main goal, so let's go on */
1955 service_enter_start_post(s);
1957 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1960 case SERVICE_RUNNING:
1961 service_enter_running(s, success);
1964 case SERVICE_STOP_SIGTERM:
1965 case SERVICE_STOP_SIGKILL:
1967 if (!control_pid_good(s))
1968 service_enter_stop_post(s, success);
1970 /* If there is still a control process, wait for that first */
1974 assert_not_reached("Uh, main process died at wrong time.");
1977 } else if (s->control_pid == pid) {
1979 if (s->control_command)
1980 exec_status_fill(&s->control_command->exec_status, pid, code, status);
1984 log_debug("%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
1986 /* If we are shutting things down anyway we
1987 * don't care about failing commands. */
1989 if (s->control_command && s->control_command->command_next && success) {
1991 /* There is another command to *
1992 * execute, so let's do that. */
1994 log_debug("%s running next command for state %s", u->meta.id, service_state_to_string(s->state));
1995 service_run_next(s, success);
1998 /* No further commands for this step, so let's
1999 * figure out what to do next */
2001 s->control_command = NULL;
2002 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2004 log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state));
2008 case SERVICE_START_PRE:
2010 service_enter_start(s);
2012 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2016 assert(s->type == SERVICE_FORKING);
2018 /* Let's try to load the pid
2019 * file here if we can. We
2020 * ignore the return value,
2021 * since the PID file might
2022 * actually be created by a
2023 * START_POST script */
2027 service_load_pid_file(s);
2029 service_enter_start_post(s);
2031 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2035 case SERVICE_START_POST:
2036 if (success && s->pid_file && !s->main_pid_known) {
2039 /* Hmm, let's see if we can
2040 * load the pid now after the
2041 * start-post scripts got
2044 if ((r = service_load_pid_file(s)) < 0)
2045 log_warning("%s: failed to load PID file %s: %s", UNIT(s)->meta.id, s->pid_file, strerror(-r));
2050 case SERVICE_RELOAD:
2052 service_enter_running(s, true);
2054 service_enter_stop(s, false);
2059 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
2062 case SERVICE_STOP_SIGTERM:
2063 case SERVICE_STOP_SIGKILL:
2064 if (main_pid_good(s) <= 0)
2065 service_enter_stop_post(s, success);
2067 /* If there is still a service
2068 * process around, wait until
2069 * that one quit, too */
2072 case SERVICE_STOP_POST:
2073 case SERVICE_FINAL_SIGTERM:
2074 case SERVICE_FINAL_SIGKILL:
2075 service_enter_dead(s, success, true);
2079 assert_not_reached("Uh, control process died at wrong time.");
2083 assert_not_reached("Got SIGCHLD for unkown PID");
2086 static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
2087 Service *s = SERVICE(u);
2090 assert(elapsed == 1);
2092 assert(w == &s->timer_watch);
2096 case SERVICE_START_PRE:
2098 log_warning("%s operation timed out. Terminating.", u->meta.id);
2099 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2102 case SERVICE_START_POST:
2103 case SERVICE_RELOAD:
2104 log_warning("%s operation timed out. Stopping.", u->meta.id);
2105 service_enter_stop(s, false);
2109 log_warning("%s stopping timed out. Terminating.", u->meta.id);
2110 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2113 case SERVICE_STOP_SIGTERM:
2114 log_warning("%s stopping timed out. Killing.", u->meta.id);
2115 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2118 case SERVICE_STOP_SIGKILL:
2119 /* Uh, wie sent a SIGKILL and it is still not gone?
2120 * Must be something we cannot kill, so let's just be
2121 * weirded out and continue */
2123 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
2124 service_enter_stop_post(s, false);
2127 case SERVICE_STOP_POST:
2128 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
2129 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2132 case SERVICE_FINAL_SIGTERM:
2133 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
2134 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
2137 case SERVICE_FINAL_SIGKILL:
2138 log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", u->meta.id);
2139 service_enter_dead(s, false, true);
2142 case SERVICE_AUTO_RESTART:
2143 log_debug("%s holdoff time over, scheduling restart.", u->meta.id);
2144 service_enter_restart(s);
2148 assert_not_reached("Timeout at wrong time.");
2152 static void service_cgroup_notify_event(Unit *u) {
2153 Service *s = SERVICE(u);
2157 log_debug("%s: cgroup is empty", u->meta.id);
2161 /* Waiting for SIGCHLD is usually more interesting,
2162 * because it includes return codes/signals. Which is
2163 * why we ignore the cgroup events for most cases,
2164 * except when we don't know pid which to expect the
2167 case SERVICE_RUNNING:
2168 service_enter_running(s, true);
2176 static int service_enumerate(Manager *m) {
2180 char *path = NULL, *fpath = NULL, *name = NULL;
2185 STRV_FOREACH(p, m->sysvrcnd_path)
2186 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
2191 if (asprintf(&path, "%s/%s", *p, rcnd_table[i].path) < 0) {
2199 if (!(d = opendir(path))) {
2200 if (errno != ENOENT)
2201 log_warning("opendir() failed on %s: %s", path, strerror(errno));
2206 while ((de = readdir(d))) {
2210 if (ignore_file(de->d_name))
2213 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
2216 if (strlen(de->d_name) < 4)
2219 a = undecchar(de->d_name[1]);
2220 b = undecchar(de->d_name[2]);
2227 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i].path, de->d_name) < 0) {
2232 if (access(fpath, X_OK) < 0) {
2234 if (errno != ENOENT)
2235 log_warning("access() failed on %s: %s", fpath, strerror(errno));
2241 if (!(name = sysv_translate_name(de->d_name + 3))) {
2246 if ((r = manager_load_unit_prepare(m, name, NULL, &service)) < 0) {
2247 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
2251 if (de->d_name[0] == 'S' &&
2252 (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_BASIC))
2253 SERVICE(service)->sysv_start_priority =
2254 MAX(a*10 + b, SERVICE(service)->sysv_start_priority);
2256 manager_dispatch_load_queue(m);
2257 service = unit_follow_merge(service);
2259 if (de->d_name[0] == 'S') {
2260 Unit *runlevel_target;
2262 if ((r = manager_load_unit(m, rcnd_table[i].target, NULL, &runlevel_target)) < 0)
2265 if ((r = unit_add_dependency(runlevel_target, UNIT_WANTS, service, true)) < 0)
2268 if ((r = unit_add_dependency(service, UNIT_BEFORE, runlevel_target, true)) < 0)
2271 } else if (de->d_name[0] == 'K' && rcnd_table[i].type == RUNLEVEL_DOWN) {
2272 Unit *shutdown_target;
2274 /* We honour K links only for
2275 * halt/reboot. For the normal
2276 * runlevels we assume the
2278 * implicitly added by the
2279 * core logic. Also, we don't
2280 * really distuingish here
2281 * between the runlevels 0 and
2282 * 6 and just add them to the
2283 * special shutdown target. */
2285 if ((r = manager_load_unit(m, SPECIAL_SHUTDOWN_TARGET, NULL, &shutdown_target)) < 0)
2288 if ((r = unit_add_dependency(service, UNIT_CONFLICTS, shutdown_target, true)) < 0)
2291 if ((r = unit_add_dependency(service, UNIT_BEFORE, shutdown_target, true)) < 0)
2310 static void service_bus_name_owner_change(
2313 const char *old_owner,
2314 const char *new_owner) {
2316 Service *s = SERVICE(u);
2321 assert(streq(s->bus_name, name));
2322 assert(old_owner || new_owner);
2324 if (old_owner && new_owner)
2325 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->meta.id, name, old_owner, new_owner);
2327 log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner);
2329 log_debug("%s's D-Bus name %s now registered by %s", u->meta.id, name, new_owner);
2331 s->bus_name_good = !!new_owner;
2333 if (s->type == SERVICE_DBUS) {
2335 /* service_enter_running() will figure out what to
2337 if (s->state == SERVICE_RUNNING)
2338 service_enter_running(s, true);
2339 else if (s->state == SERVICE_START && new_owner)
2340 service_enter_start_post(s);
2342 } else if (new_owner &&
2344 (s->state == SERVICE_START ||
2345 s->state == SERVICE_START_POST ||
2346 s->state == SERVICE_RUNNING ||
2347 s->state == SERVICE_RELOAD)) {
2349 /* Try to acquire PID from bus service */
2350 log_debug("Trying to acquire PID from D-Bus name...");
2352 bus_query_pid(u->meta.manager, name);
2356 static void service_bus_query_pid_done(
2361 Service *s = SERVICE(u);
2366 log_debug("%s's D-Bus name %s is now owned by process %u", u->meta.id, name, (unsigned) pid);
2368 if (s->main_pid <= 0 &&
2369 (s->state == SERVICE_START ||
2370 s->state == SERVICE_START_POST ||
2371 s->state == SERVICE_RUNNING ||
2372 s->state == SERVICE_RELOAD))
2376 int service_set_socket_fd(Service *s, int fd) {
2380 /* This is called by the socket code when instantiating a new
2381 * service for a stream socket and the socket needs to be
2384 if (UNIT(s)->meta.load_state != UNIT_LOADED)
2387 if (s->socket_fd >= 0)
2390 if (s->state != SERVICE_DEAD)
2394 s->got_socket_fd = true;
2398 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
2399 [SERVICE_DEAD] = "dead",
2400 [SERVICE_START_PRE] = "start-pre",
2401 [SERVICE_START] = "start",
2402 [SERVICE_START_POST] = "start-post",
2403 [SERVICE_RUNNING] = "running",
2404 [SERVICE_EXITED] = "exited",
2405 [SERVICE_RELOAD] = "reload",
2406 [SERVICE_STOP] = "stop",
2407 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
2408 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
2409 [SERVICE_STOP_POST] = "stop-post",
2410 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
2411 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
2412 [SERVICE_MAINTAINANCE] = "maintainance",
2413 [SERVICE_AUTO_RESTART] = "auto-restart",
2416 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
2418 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
2419 [SERVICE_ONCE] = "once",
2420 [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
2421 [SERVICE_RESTART_ALWAYS] = "restart-always",
2424 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
2426 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
2427 [SERVICE_FORKING] = "forking",
2428 [SERVICE_SIMPLE] = "simple",
2429 [SERVICE_FINISH] = "finish",
2430 [SERVICE_DBUS] = "dbus"
2433 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
2435 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
2436 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
2437 [SERVICE_EXEC_START] = "ExecStart",
2438 [SERVICE_EXEC_START_POST] = "ExecStartPost",
2439 [SERVICE_EXEC_RELOAD] = "ExecReload",
2440 [SERVICE_EXEC_STOP] = "ExecStop",
2441 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
2444 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
2446 const UnitVTable service_vtable = {
2447 .suffix = ".service",
2449 .init = service_init,
2450 .done = service_done,
2451 .load = service_load,
2453 .coldplug = service_coldplug,
2455 .dump = service_dump,
2457 .start = service_start,
2458 .stop = service_stop,
2459 .reload = service_reload,
2461 .can_reload = service_can_reload,
2463 .serialize = service_serialize,
2464 .deserialize_item = service_deserialize_item,
2466 .active_state = service_active_state,
2467 .sub_state_to_string = service_sub_state_to_string,
2469 .check_gc = service_check_gc,
2470 .check_snapshot = service_check_snapshot,
2472 .sigchld_event = service_sigchld_event,
2473 .timer_event = service_timer_event,
2475 .cgroup_notify_empty = service_cgroup_notify_event,
2477 .bus_name_owner_change = service_bus_name_owner_change,
2478 .bus_query_pid_done = service_bus_query_pid_done,
2480 .bus_message_handler = bus_service_message_handler,
2482 .enumerate = service_enumerate