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"
41 typedef enum RunlevelType {
50 const RunlevelType type;
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 },
59 { "/boot.d", SPECIAL_BASIC_TARGET, RUNLEVEL_BASIC },
62 #define RUNLEVELS_UP "12345"
63 #define RUNLEVELS_DOWN "06"
65 static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
66 [SERVICE_DEAD] = UNIT_INACTIVE,
67 [SERVICE_START_PRE] = UNIT_ACTIVATING,
68 [SERVICE_START] = UNIT_ACTIVATING,
69 [SERVICE_START_POST] = UNIT_ACTIVATING,
70 [SERVICE_RUNNING] = UNIT_ACTIVE,
71 [SERVICE_EXITED] = UNIT_ACTIVE,
72 [SERVICE_RELOAD] = UNIT_ACTIVE_RELOADING,
73 [SERVICE_STOP] = UNIT_DEACTIVATING,
74 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
75 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
76 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
77 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
78 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
79 [SERVICE_MAINTAINANCE] = UNIT_INACTIVE,
80 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING,
83 static void service_init(Unit *u) {
84 Service *s = SERVICE(u);
87 assert(u->meta.load_state == UNIT_STUB);
89 s->timeout_usec = DEFAULT_TIMEOUT_USEC;
90 s->restart_usec = DEFAULT_RESTART_USEC;
91 s->timer_watch.type = WATCH_INVALID;
92 s->sysv_start_priority = -1;
95 exec_context_init(&s->exec_context);
97 RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
99 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
102 static void service_unwatch_control_pid(Service *s) {
105 if (s->control_pid <= 0)
108 unit_unwatch_pid(UNIT(s), s->control_pid);
112 static void service_unwatch_main_pid(Service *s) {
115 if (s->main_pid <= 0)
118 unit_unwatch_pid(UNIT(s), s->main_pid);
122 static void service_close_socket_fd(Service *s) {
125 if (s->socket_fd < 0)
128 close_nointr_nofail(s->socket_fd);
132 static void service_done(Unit *u) {
133 Service *s = SERVICE(u);
143 free(s->sysv_runlevels);
144 s->sysv_runlevels = NULL;
146 exec_context_done(&s->exec_context);
147 exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
148 s->control_command = NULL;
150 /* This will leak a process, but at least no memory or any of
152 service_unwatch_main_pid(s);
153 service_unwatch_control_pid(s);
156 unit_unwatch_bus_name(UNIT(u), s->bus_name);
161 service_close_socket_fd(s);
163 unit_unwatch_timer(u, &s->timer_watch);
166 static int sysv_translate_name(const char *name, char **_r) {
168 static const char * const table[] = {
169 "$local_fs", SPECIAL_LOCAL_FS_TARGET,
170 "$network", SPECIAL_NETWORK_TARGET,
171 "$named", SPECIAL_NSS_LOOKUP_TARGET,
172 "$portmap", SPECIAL_RPCBIND_TARGET,
173 "$remote_fs", SPECIAL_REMOTE_FS_TARGET,
174 "$syslog", SPECIAL_SYSLOG_TARGET,
175 "$time", SPECIAL_RTC_SET_TARGET
181 for (i = 0; i < ELEMENTSOF(table); i += 2)
182 if (streq(table[i], name)) {
183 if (!(r = strdup(table[i+1])))
192 if (asprintf(&r, "%s.service", name) < 0)
203 static int sysv_chkconfig_order(Service *s) {
209 if (s->sysv_start_priority < 0)
212 /* For each pair of services where at least one lacks a LSB
213 * header, we use the start priority value to order things. */
215 LIST_FOREACH(units_per_type, other, UNIT(s)->meta.manager->units_per_type[UNIT_SERVICE]) {
219 t = (Service*) other;
224 if (t->sysv_start_priority < 0)
227 /* If both units have modern headers we don't care
228 * about the priorities */
229 if ((!s->sysv_path || s->sysv_has_lsb) &&
230 (!t->sysv_path || t->sysv_has_lsb))
233 if (t->sysv_start_priority < s->sysv_start_priority)
235 else if (t->sysv_start_priority > s->sysv_start_priority)
240 /* FIXME: Maybe we should compare the name here lexicographically? */
242 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
249 static ExecCommand *exec_command_new(const char *path, const char *arg1) {
252 if (!(c = new0(ExecCommand, 1)))
255 if (!(c->path = strdup(path))) {
260 if (!(c->argv = strv_new(path, arg1, NULL))) {
269 static int sysv_exec_commands(Service *s) {
273 assert(s->sysv_path);
275 if (!(c = exec_command_new(s->sysv_path, "start")))
277 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
279 if (!(c = exec_command_new(s->sysv_path, "stop")))
281 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
283 if (!(c = exec_command_new(s->sysv_path, "reload")))
285 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
290 static int service_load_sysv_path(Service *s, const char *path) {
307 if (!(f = fopen(path, "re"))) {
308 r = errno == ENOENT ? 0 : -errno;
312 s->type = SERVICE_FORKING;
313 s->restart = SERVICE_ONCE;
316 if (!(s->sysv_path = strdup(path))) {
322 char l[LINE_MAX], *t;
324 if (!fgets(l, sizeof(l), f)) {
329 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
339 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
341 s->sysv_has_lsb = true;
345 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
351 t += strspn(t, WHITESPACE);
353 if (state == NORMAL) {
355 /* Try to parse Red Hat style chkconfig headers */
357 if (startswith(t, "chkconfig:")) {
359 char runlevels[16], *k;
363 if (sscanf(t+10, "%15s %i %*i",
365 &start_priority) != 2) {
367 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
371 if (start_priority < 0 || start_priority > 99)
372 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
373 else if (s->sysv_start_priority < 0)
374 s->sysv_start_priority = start_priority;
376 char_array_0(runlevels);
377 k = delete_chars(runlevels, WHITESPACE "-");
382 if (!(d = strdup(k))) {
387 free(s->sysv_runlevels);
388 s->sysv_runlevels = d;
391 } else if (startswith(t, "description:")) {
393 size_t k = strlen(t);
396 if (t[k-1] == '\\') {
401 if (!(d = strdup(strstrip(t+12)))) {
406 free(u->meta.description);
407 u->meta.description = d;
409 } else if (startswith(t, "pidfile:")) {
416 if (!path_is_absolute(fn)) {
417 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
421 if (!(fn = strdup(fn))) {
430 } else if (state == DESCRIPTION) {
432 /* Try to parse Red Hat style description
435 size_t k = strlen(t);
443 assert(u->meta.description);
444 if (asprintf(&d, "%s %s", u->meta.description, strstrip(t)) < 0) {
449 free(u->meta.description);
450 u->meta.description = d;
452 } else if (state == LSB || state == LSB_DESCRIPTION) {
454 if (startswith(t, "Provides:")) {
460 FOREACH_WORD(w, z, t+9, i) {
463 if (!(n = strndup(w, z))) {
468 r = sysv_translate_name(n, &m);
477 if (unit_name_to_type(m) == UNIT_SERVICE)
478 r = unit_add_name(u, m);
480 if ((r = unit_add_dependency_by_name_inverse(u, UNIT_REQUIRES, m, NULL, true)) >= 0)
481 r = unit_add_dependency_by_name(u, UNIT_BEFORE, m, NULL, true);
490 } else if (startswith(t, "Required-Start:") ||
491 startswith(t, "Should-Start:")) {
497 FOREACH_WORD(w, z, strchr(t, ':')+1, i) {
500 if (!(n = strndup(w, z))) {
505 r = sysv_translate_name(n, &m);
514 r = unit_add_dependency_by_name(u, UNIT_AFTER, m, NULL, true);
520 } else if (startswith(t, "Default-Start:")) {
525 k = delete_chars(t+14, WHITESPACE "-");
528 if (!(d = strdup(k))) {
533 free(s->sysv_runlevels);
534 s->sysv_runlevels = d;
537 } else if (startswith(t, "Description:")) {
540 state = LSB_DESCRIPTION;
542 if (!(d = strdup(strstrip(t+12)))) {
547 free(u->meta.description);
548 u->meta.description = d;
550 } else if (startswith(t, "Short-Description:") &&
551 !u->meta.description) {
554 /* We use the short description only
555 * if no long description is set. */
559 if (!(d = strdup(strstrip(t+18)))) {
564 u->meta.description = d;
566 } else if (state == LSB_DESCRIPTION) {
568 if (startswith(l, "#\t") || startswith(l, "# ")) {
571 assert(u->meta.description);
572 if (asprintf(&d, "%s %s", u->meta.description, t) < 0) {
577 free(u->meta.description);
578 u->meta.description = d;
585 /* If init scripts have no LSB header, then we enforce the
586 * ordering via the chkconfig priorities. We try to determine
587 * a priority for *all* init scripts here, since they are
588 * needed as soon as at least one non-LSB script is used. */
590 if (s->sysv_start_priority < 0)
591 log_warning("%s has neither a chkconfig header nor a directory link, cannot order unit!", u->meta.id);
593 if ((r = sysv_exec_commands(s)) < 0)
596 if (!s->sysv_runlevels || chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
597 /* If there a runlevels configured for this service
598 * but none of the standard ones, then we assume this
599 * is some special kind of service (which might be
600 * needed for early boot) and don't create any links
603 if ((r = unit_add_dependency_by_name(u, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0 ||
604 (r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
608 /* Don't timeout special services during boot (like fsck) */
611 /* Special setting for all SysV services */
612 s->valid_no_process = true;
613 s->kill_mode = KILL_PROCESS_GROUP;
615 u->meta.load_state = UNIT_LOADED;
626 static int service_load_sysv_name(Service *s, const char *name) {
632 STRV_FOREACH(p, UNIT(s)->meta.manager->sysvinit_path) {
636 if (asprintf(&path, "%s/%s", *p, name) < 0)
639 assert(endswith(path, ".service"));
640 path[strlen(path)-8] = 0;
642 r = service_load_sysv_path(s, path);
648 if ((UNIT(s)->meta.load_state != UNIT_STUB))
655 static int service_load_sysv(Service *s) {
662 /* Load service data from SysV init scripts, preferably with
665 if (strv_isempty(UNIT(s)->meta.manager->sysvinit_path))
668 if ((t = UNIT(s)->meta.id))
669 if ((r = service_load_sysv_name(s, t)) < 0)
672 if (UNIT(s)->meta.load_state == UNIT_STUB)
673 SET_FOREACH(t, UNIT(s)->meta.names, i) {
674 if (t == UNIT(s)->meta.id)
677 if ((r == service_load_sysv_name(s, t)) < 0)
680 if (UNIT(s)->meta.load_state != UNIT_STUB)
687 static int service_add_bus_name(Service *s) {
694 if (asprintf(&n, "dbus-%s.service", s->bus_name) < 0)
697 r = unit_merge_by_name(UNIT(s), n);
703 static int service_verify(Service *s) {
706 if (UNIT(s)->meta.load_state != UNIT_LOADED)
709 if (!s->exec_command[SERVICE_EXEC_START]) {
710 log_error("%s lacks ExecStart setting. Refusing.", UNIT(s)->meta.id);
714 if (s->type == SERVICE_DBUS && !s->bus_name) {
715 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s)->meta.id);
722 static int service_load(Unit *u) {
724 Service *s = SERVICE(u);
728 /* Load a .service file */
729 if ((r = unit_load_fragment(u)) < 0)
732 /* Load a classic init script as a fallback, if we couldn't find anything */
733 if (u->meta.load_state == UNIT_STUB)
734 if ((r = service_load_sysv(s)) < 0)
737 /* Still nothing found? Then let's give up */
738 if (u->meta.load_state == UNIT_STUB)
741 /* We were able to load something, then let's add in the
742 * dropin directories. */
743 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
746 /* This is a new unit? Then let's add in some extras */
747 if (u->meta.load_state == UNIT_LOADED) {
748 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
751 if ((r = unit_add_default_cgroup(u)) < 0)
754 if ((r = sysv_chkconfig_order(s)) < 0)
758 if ((r = service_add_bus_name(s)) < 0)
761 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
766 return service_verify(s);
769 static void service_dump(Unit *u, FILE *f, const char *prefix) {
771 ServiceExecCommand c;
772 Service *s = SERVICE(u);
778 p2 = strappend(prefix, "\t");
779 prefix2 = p2 ? p2 : prefix;
782 "%sService State: %s\n"
783 "%sPermissionsStartOnly: %s\n"
784 "%sRootDirectoryStartOnly: %s\n"
785 "%sValidNoProcess: %s\n"
788 prefix, service_state_to_string(s->state),
789 prefix, yes_no(s->permissions_start_only),
790 prefix, yes_no(s->root_directory_start_only),
791 prefix, yes_no(s->valid_no_process),
792 prefix, kill_mode_to_string(s->kill_mode),
793 prefix, service_type_to_string(s->type));
795 if (s->control_pid > 0)
797 "%sControl PID: %llu\n",
798 prefix, (unsigned long long) s->control_pid);
802 "%sMain PID: %llu\n",
803 prefix, (unsigned long long) s->main_pid);
808 prefix, s->pid_file);
813 "%sBus Name Good: %s\n",
815 prefix, yes_no(s->bus_name_good));
817 exec_context_dump(&s->exec_context, f, prefix);
819 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
821 if (!s->exec_command[c])
824 fprintf(f, "%s-> %s:\n",
825 prefix, service_exec_command_to_string(c));
827 exec_command_dump_list(s->exec_command[c], f, prefix2);
832 "%sSysV Init Script Path: %s\n"
833 "%sSysV Init Script has LSB Header: %s\n",
834 prefix, s->sysv_path,
835 prefix, yes_no(s->sysv_has_lsb));
837 if (s->sysv_start_priority >= 0)
839 "%sSysVStartPriority: %i\n",
840 prefix, s->sysv_start_priority);
842 if (s->sysv_runlevels)
843 fprintf(f, "%sSysVRunLevels: %s\n",
844 prefix, s->sysv_runlevels);
849 static int service_load_pid_file(Service *s) {
856 if (s->main_pid_known)
859 assert(s->main_pid <= 0);
864 if ((r = read_one_line_file(s->pid_file, &k)) < 0)
867 if ((r = safe_atolu(k, &p)) < 0) {
872 if ((unsigned long) (pid_t) p != p)
875 if (kill((pid_t) p, 0) < 0 && errno != EPERM) {
876 log_warning("PID %llu read from file %s does not exist. Your service or init script might be broken.",
877 (unsigned long long) p, s->pid_file);
881 if ((r = unit_watch_pid(UNIT(s), (pid_t) p)) < 0)
882 /* FIXME: we need to do something here */
885 s->main_pid = (pid_t) p;
886 s->main_pid_known = true;
891 static int service_get_sockets(Service *s, Set **_set) {
900 /* Collects all Socket objects that belong to this
901 * service. Note that a service might have multiple sockets
902 * via multiple names. */
904 if (!(set = set_new(NULL, NULL)))
907 SET_FOREACH(t, UNIT(s)->meta.names, i) {
911 /* Look for all socket objects that go by any of our
912 * units and collect their fds */
914 if (!(k = unit_name_change_suffix(t, ".socket"))) {
919 p = manager_get_unit(UNIT(s)->meta.manager, k);
925 if ((r = set_put(set, p)) < 0)
937 static int service_notify_sockets_dead(Service *s) {
945 /* Notifies all our sockets when we die */
946 if ((r = service_get_sockets(s, &set)) < 0)
949 SET_FOREACH(sock, set, i)
950 socket_notify_service_dead(sock);
957 static void service_set_state(Service *s, ServiceState state) {
958 ServiceState old_state;
961 old_state = s->state;
964 if (state != SERVICE_START_PRE &&
965 state != SERVICE_START &&
966 state != SERVICE_START_POST &&
967 state != SERVICE_RELOAD &&
968 state != SERVICE_STOP &&
969 state != SERVICE_STOP_SIGTERM &&
970 state != SERVICE_STOP_SIGKILL &&
971 state != SERVICE_STOP_POST &&
972 state != SERVICE_FINAL_SIGTERM &&
973 state != SERVICE_FINAL_SIGKILL &&
974 state != SERVICE_AUTO_RESTART)
975 unit_unwatch_timer(UNIT(s), &s->timer_watch);
977 if (state != SERVICE_START &&
978 state != SERVICE_START_POST &&
979 state != SERVICE_RUNNING &&
980 state != SERVICE_RELOAD &&
981 state != SERVICE_STOP &&
982 state != SERVICE_STOP_SIGTERM &&
983 state != SERVICE_STOP_SIGKILL)
984 service_unwatch_main_pid(s);
986 if (state != SERVICE_START_PRE &&
987 state != SERVICE_START &&
988 state != SERVICE_START_POST &&
989 state != SERVICE_RELOAD &&
990 state != SERVICE_STOP &&
991 state != SERVICE_STOP_SIGTERM &&
992 state != SERVICE_STOP_SIGKILL &&
993 state != SERVICE_STOP_POST &&
994 state != SERVICE_FINAL_SIGTERM &&
995 state != SERVICE_FINAL_SIGKILL) {
996 service_unwatch_control_pid(s);
997 s->control_command = NULL;
998 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1001 if (state == SERVICE_DEAD ||
1002 state == SERVICE_STOP ||
1003 state == SERVICE_STOP_SIGTERM ||
1004 state == SERVICE_STOP_SIGKILL ||
1005 state == SERVICE_STOP_POST ||
1006 state == SERVICE_FINAL_SIGTERM ||
1007 state == SERVICE_FINAL_SIGKILL ||
1008 state == SERVICE_MAINTAINANCE ||
1009 state == SERVICE_AUTO_RESTART)
1010 service_notify_sockets_dead(s);
1012 if (state != SERVICE_START_PRE &&
1013 state != SERVICE_START &&
1014 !(state == SERVICE_DEAD && UNIT(s)->meta.job))
1015 service_close_socket_fd(s);
1017 if (old_state != state)
1018 log_debug("%s changed %s -> %s", UNIT(s)->meta.id, service_state_to_string(old_state), service_state_to_string(state));
1020 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
1023 static int service_coldplug(Unit *u) {
1024 Service *s = SERVICE(u);
1028 assert(s->state == SERVICE_DEAD);
1030 if (s->deserialized_state != s->state) {
1032 if (s->deserialized_state == SERVICE_START_PRE ||
1033 s->deserialized_state == SERVICE_START ||
1034 s->deserialized_state == SERVICE_START_POST ||
1035 s->deserialized_state == SERVICE_RELOAD ||
1036 s->deserialized_state == SERVICE_STOP ||
1037 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1038 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1039 s->deserialized_state == SERVICE_STOP_POST ||
1040 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1041 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
1042 s->deserialized_state == SERVICE_AUTO_RESTART) {
1044 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1047 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1049 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1054 if ((s->deserialized_state == SERVICE_START &&
1055 (s->type == SERVICE_FORKING ||
1056 s->type == SERVICE_DBUS)) ||
1057 s->deserialized_state == SERVICE_START_POST ||
1058 s->deserialized_state == SERVICE_RUNNING ||
1059 s->deserialized_state == SERVICE_RELOAD ||
1060 s->deserialized_state == SERVICE_STOP ||
1061 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1062 s->deserialized_state == SERVICE_STOP_SIGKILL)
1063 if (s->main_pid > 0)
1064 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1067 if (s->deserialized_state == SERVICE_START_PRE ||
1068 s->deserialized_state == SERVICE_START ||
1069 s->deserialized_state == SERVICE_START_POST ||
1070 s->deserialized_state == SERVICE_RELOAD ||
1071 s->deserialized_state == SERVICE_STOP ||
1072 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1073 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1074 s->deserialized_state == SERVICE_STOP_POST ||
1075 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1076 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1077 if (s->control_pid > 0)
1078 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1081 service_set_state(s, s->deserialized_state);
1087 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1091 unsigned rn_fds = 0;
1099 if ((r = service_get_sockets(s, &set)) < 0)
1102 SET_FOREACH(sock, set, i) {
1106 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
1118 if (!(t = new(int, rn_fds+cn_fds))) {
1124 memcpy(t, rfds, rn_fds);
1125 memcpy(t+rn_fds, cfds, cn_fds);
1130 rn_fds = rn_fds+cn_fds;
1148 static int service_spawn(
1153 bool apply_permissions,
1168 if (s->socket_fd >= 0) {
1169 fds = &s->socket_fd;
1171 } else if ((r = service_collect_fds(s, &fds, &n_fds)) < 0)
1175 if (timeout && s->timeout_usec) {
1176 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1179 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1181 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1192 UNIT(s)->meta.manager->confirm_spawn,
1193 UNIT(s)->meta.cgroup_bondings,
1201 if (s->socket_fd >= 0)
1202 service_close_socket_fd(s);
1207 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1208 /* FIXME: we need to do something here */
1219 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1224 static int main_pid_good(Service *s) {
1227 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1230 /* If we know the pid file, then lets just check if it is
1232 if (s->main_pid_known)
1233 return s->main_pid > 0;
1235 /* We don't know the pid */
1239 static int control_pid_good(Service *s) {
1242 return s->control_pid > 0;
1245 static int cgroup_good(Service *s) {
1250 if (s->valid_no_process)
1253 if ((r = cgroup_bonding_is_empty_list(UNIT(s)->meta.cgroup_bondings)) < 0)
1259 static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1266 if (allow_restart &&
1268 (s->restart == SERVICE_RESTART_ALWAYS ||
1269 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
1271 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
1274 service_set_state(s, SERVICE_AUTO_RESTART);
1276 service_set_state(s, s->failure ? SERVICE_MAINTAINANCE : SERVICE_DEAD);
1281 log_warning("%s failed to run install restart timer: %s", UNIT(s)->meta.id, strerror(-r));
1282 service_enter_dead(s, false, false);
1285 static void service_enter_signal(Service *s, ServiceState state, bool success);
1287 static void service_enter_stop_post(Service *s, bool success) {
1294 service_unwatch_control_pid(s);
1296 s->control_command_id = SERVICE_EXEC_STOP_POST;
1297 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
1298 if ((r = service_spawn(s,
1302 !s->permissions_start_only,
1303 !s->root_directory_start_only,
1304 &s->control_pid)) < 0)
1308 service_set_state(s, SERVICE_STOP_POST);
1310 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
1315 log_warning("%s failed to run stop-post executable: %s", UNIT(s)->meta.id, strerror(-r));
1316 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1319 static void service_enter_signal(Service *s, ServiceState state, bool success) {
1328 if (s->kill_mode != KILL_NONE) {
1329 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
1331 if (s->kill_mode == KILL_CONTROL_GROUP) {
1333 if ((r = cgroup_bonding_kill_list(UNIT(s)->meta.cgroup_bondings, sig)) < 0) {
1334 if (r != -EAGAIN && r != -ESRCH)
1343 if (s->main_pid > 0) {
1344 if (kill(s->kill_mode == KILL_PROCESS ? s->main_pid : -s->main_pid, sig) < 0 && errno != ESRCH)
1350 if (s->control_pid > 0) {
1351 if (kill(s->kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH)
1362 if (sent && (s->main_pid > 0 || s->control_pid > 0)) {
1363 if (s->timeout_usec > 0)
1364 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1367 service_set_state(s, state);
1368 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1369 service_enter_stop_post(s, true);
1371 service_enter_dead(s, true, true);
1376 log_warning("%s failed to kill processes: %s", UNIT(s)->meta.id, strerror(-r));
1378 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1379 service_enter_stop_post(s, false);
1381 service_enter_dead(s, false, true);
1384 static void service_enter_stop(Service *s, bool success) {
1391 service_unwatch_control_pid(s);
1393 s->control_command_id = SERVICE_EXEC_STOP;
1394 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
1395 if ((r = service_spawn(s,
1399 !s->permissions_start_only,
1400 !s->root_directory_start_only,
1401 &s->control_pid)) < 0)
1404 service_set_state(s, SERVICE_STOP);
1406 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1411 log_warning("%s failed to run stop executable: %s", UNIT(s)->meta.id, strerror(-r));
1412 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1415 static void service_enter_running(Service *s, bool success) {
1421 if (main_pid_good(s) != 0 &&
1422 cgroup_good(s) != 0 &&
1423 (s->bus_name_good || s->type != SERVICE_DBUS))
1424 service_set_state(s, SERVICE_RUNNING);
1425 else if (s->valid_no_process)
1426 service_set_state(s, SERVICE_EXITED);
1428 service_enter_stop(s, true);
1431 static void service_enter_start_post(Service *s) {
1435 service_unwatch_control_pid(s);
1437 s->control_command_id = SERVICE_EXEC_START_POST;
1438 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
1439 if ((r = service_spawn(s,
1443 !s->permissions_start_only,
1444 !s->root_directory_start_only,
1445 &s->control_pid)) < 0)
1449 service_set_state(s, SERVICE_START_POST);
1451 service_enter_running(s, true);
1456 log_warning("%s failed to run start-post executable: %s", UNIT(s)->meta.id, strerror(-r));
1457 service_enter_stop(s, false);
1460 static void service_enter_start(Service *s) {
1466 assert(s->exec_command[SERVICE_EXEC_START]);
1467 assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
1469 if (s->type == SERVICE_FORKING)
1470 service_unwatch_control_pid(s);
1472 service_unwatch_main_pid(s);
1474 if ((r = service_spawn(s,
1475 s->exec_command[SERVICE_EXEC_START],
1476 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS,
1483 if (s->type == SERVICE_SIMPLE) {
1484 /* For simple services we immediately start
1485 * the START_POST binaries. */
1488 s->main_pid_known = true;
1490 service_enter_start_post(s);
1492 } else if (s->type == SERVICE_FORKING) {
1494 /* For forking services we wait until the start
1495 * process exited. */
1497 s->control_pid = pid;
1499 s->control_command_id = SERVICE_EXEC_START;
1500 s->control_command = s->exec_command[SERVICE_EXEC_START];
1501 service_set_state(s, SERVICE_START);
1503 } else if (s->type == SERVICE_FINISH ||
1504 s->type == SERVICE_DBUS) {
1506 /* For finishing services we wait until the start
1507 * process exited, too, but it is our main process. */
1509 /* For D-Bus services we know the main pid right away,
1510 * but wait for the bus name to appear on the bus. */
1513 s->main_pid_known = true;
1515 service_set_state(s, SERVICE_START);
1517 assert_not_reached("Unknown service type");
1522 log_warning("%s failed to run start exectuable: %s", UNIT(s)->meta.id, strerror(-r));
1523 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1526 static void service_enter_start_pre(Service *s) {
1531 service_unwatch_control_pid(s);
1533 s->control_command_id = SERVICE_EXEC_START_PRE;
1534 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
1535 if ((r = service_spawn(s,
1539 !s->permissions_start_only,
1540 !s->root_directory_start_only,
1541 &s->control_pid)) < 0)
1544 service_set_state(s, SERVICE_START_PRE);
1546 service_enter_start(s);
1551 log_warning("%s failed to run start-pre executable: %s", UNIT(s)->meta.id, strerror(-r));
1552 service_enter_dead(s, false, true);
1555 static void service_enter_restart(Service *s) {
1559 service_enter_dead(s, true, false);
1561 if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL)) < 0)
1564 log_debug("%s scheduled restart job.", UNIT(s)->meta.id);
1569 log_warning("%s failed to schedule restart job: %s", UNIT(s)->meta.id, strerror(-r));
1570 service_enter_dead(s, false, false);
1573 static void service_enter_reload(Service *s) {
1578 service_unwatch_control_pid(s);
1580 s->control_command_id = SERVICE_EXEC_RELOAD;
1581 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
1582 if ((r = service_spawn(s,
1586 !s->permissions_start_only,
1587 !s->root_directory_start_only,
1588 &s->control_pid)) < 0)
1591 service_set_state(s, SERVICE_RELOAD);
1593 service_enter_running(s, true);
1598 log_warning("%s failed to run reload executable: %s", UNIT(s)->meta.id, strerror(-r));
1599 service_enter_stop(s, false);
1602 static void service_run_next(Service *s, bool success) {
1606 assert(s->control_command);
1607 assert(s->control_command->command_next);
1612 s->control_command = s->control_command->command_next;
1614 service_unwatch_control_pid(s);
1616 if ((r = service_spawn(s,
1620 !s->permissions_start_only,
1621 !s->root_directory_start_only,
1622 &s->control_pid)) < 0)
1628 log_warning("%s failed to run spawn next executable: %s", UNIT(s)->meta.id, strerror(-r));
1630 if (s->state == SERVICE_START_PRE)
1631 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1632 else if (s->state == SERVICE_STOP)
1633 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1634 else if (s->state == SERVICE_STOP_POST)
1635 service_enter_dead(s, false, true);
1637 service_enter_stop(s, false);
1640 static int service_start(Unit *u) {
1641 Service *s = SERVICE(u);
1645 /* We cannot fulfill this request right now, try again later
1647 if (s->state == SERVICE_STOP ||
1648 s->state == SERVICE_STOP_SIGTERM ||
1649 s->state == SERVICE_STOP_SIGKILL ||
1650 s->state == SERVICE_STOP_POST ||
1651 s->state == SERVICE_FINAL_SIGTERM ||
1652 s->state == SERVICE_FINAL_SIGKILL)
1655 /* Already on it! */
1656 if (s->state == SERVICE_START_PRE ||
1657 s->state == SERVICE_START ||
1658 s->state == SERVICE_START_POST)
1661 assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTAINANCE || s->state == SERVICE_AUTO_RESTART);
1663 /* Make sure we don't enter a busy loop of some kind. */
1664 if (!ratelimit_test(&s->ratelimit)) {
1665 log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
1670 s->main_pid_known = false;
1671 s->allow_restart = true;
1673 service_enter_start_pre(s);
1677 static int service_stop(Unit *u) {
1678 Service *s = SERVICE(u);
1682 /* Cannot do this now */
1683 if (s->state == SERVICE_START_PRE ||
1684 s->state == SERVICE_START ||
1685 s->state == SERVICE_START_POST ||
1686 s->state == SERVICE_RELOAD)
1690 if (s->state == SERVICE_STOP ||
1691 s->state == SERVICE_STOP_SIGTERM ||
1692 s->state == SERVICE_STOP_SIGKILL ||
1693 s->state == SERVICE_STOP_POST ||
1694 s->state == SERVICE_FINAL_SIGTERM ||
1695 s->state == SERVICE_FINAL_SIGKILL)
1698 if (s->state == SERVICE_AUTO_RESTART) {
1699 service_set_state(s, SERVICE_DEAD);
1703 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
1705 /* This is a user request, so don't do restarts on this
1707 s->allow_restart = false;
1709 service_enter_stop(s, true);
1713 static int service_reload(Unit *u) {
1714 Service *s = SERVICE(u);
1718 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
1720 service_enter_reload(s);
1724 static bool service_can_reload(Unit *u) {
1725 Service *s = SERVICE(u);
1729 return !!s->exec_command[SERVICE_EXEC_RELOAD];
1732 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
1733 Service *s = SERVICE(u);
1739 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
1740 unit_serialize_item(u, f, "failure", yes_no(s->failure));
1742 if (s->control_pid > 0)
1743 unit_serialize_item_format(u, f, "control-pid", "%u", (unsigned) (s->control_pid));
1745 if (s->main_pid > 0)
1746 unit_serialize_item_format(u, f, "main-pid", "%u", (unsigned) (s->main_pid));
1748 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
1750 /* There's a minor uncleanliness here: if there are multiple
1751 * commands attached here, we will start from the first one
1753 if (s->control_command_id >= 0)
1754 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
1756 if (s->socket_fd >= 0) {
1759 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
1762 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
1768 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
1769 Service *s = SERVICE(u);
1777 if (streq(key, "state")) {
1780 if ((state = service_state_from_string(value)) < 0)
1781 log_debug("Failed to parse state value %s", value);
1783 s->deserialized_state = state;
1784 } else if (streq(key, "failure")) {
1787 if ((b = parse_boolean(value)) < 0)
1788 log_debug("Failed to parse failure value %s", value);
1790 s->failure = b || s->failure;
1791 } else if (streq(key, "control-pid")) {
1794 if ((r = safe_atou(value, &pid)) < 0 || pid <= 0)
1795 log_debug("Failed to parse control-pid value %s", value);
1797 s->control_pid = (pid_t) pid;
1798 } else if (streq(key, "main-pid")) {
1801 if ((r = safe_atou(value, &pid)) < 0 || pid <= 0)
1802 log_debug("Failed to parse main-pid value %s", value);
1804 s->main_pid = (pid_t) pid;
1805 } else if (streq(key, "main-pid-known")) {
1808 if ((b = parse_boolean(value)) < 0)
1809 log_debug("Failed to parse main-pid-known value %s", value);
1811 s->main_pid_known = b;
1812 } else if (streq(key, "control-command")) {
1813 ServiceExecCommand id;
1815 if ((id = service_exec_command_from_string(value)) < 0)
1816 log_debug("Failed to parse exec-command value %s", value);
1818 s->control_command_id = id;
1819 s->control_command = s->exec_command[id];
1821 } else if (streq(key, "socket-fd")) {
1824 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
1825 log_debug("Failed to parse socket-fd value %s", value);
1828 if (s->socket_fd >= 0)
1829 close_nointr_nofail(s->socket_fd);
1830 s->socket_fd = fdset_remove(fds, fd);
1833 log_debug("Unknown serialization key '%s'", key);
1838 static UnitActiveState service_active_state(Unit *u) {
1841 return state_translation_table[SERVICE(u)->state];
1844 static const char *service_sub_state_to_string(Unit *u) {
1847 return service_state_to_string(SERVICE(u)->state);
1850 static bool service_check_gc(Unit *u) {
1851 Service *s = SERVICE(u);
1855 return !!s->sysv_path;
1858 static bool service_check_snapshot(Unit *u) {
1859 Service *s = SERVICE(u);
1863 return !s->got_socket_fd;
1866 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
1867 Service *s = SERVICE(u);
1873 success = code == CLD_EXITED && status == 0;
1874 s->failure = s->failure || !success;
1876 if (s->main_pid == pid) {
1878 exec_status_fill(&s->main_exec_status, pid, code, status);
1881 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_FINISH) {
1882 assert(s->exec_command[SERVICE_EXEC_START]);
1883 s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
1886 log_debug("%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status);
1888 /* The service exited, so the service is officially
1893 case SERVICE_START_POST:
1894 case SERVICE_RELOAD:
1896 /* Need to wait until the operation is
1901 assert(s->type == SERVICE_FINISH);
1903 /* This was our main goal, so let's go on */
1905 service_enter_start_post(s);
1907 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1910 case SERVICE_RUNNING:
1911 service_enter_running(s, success);
1914 case SERVICE_STOP_SIGTERM:
1915 case SERVICE_STOP_SIGKILL:
1917 if (!control_pid_good(s))
1918 service_enter_stop_post(s, success);
1920 /* If there is still a control process, wait for that first */
1924 assert_not_reached("Uh, main process died at wrong time.");
1927 } else if (s->control_pid == pid) {
1929 if (s->control_command)
1930 exec_status_fill(&s->control_command->exec_status, pid, code, status);
1934 log_debug("%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
1936 /* If we are shutting things down anyway we
1937 * don't care about failing commands. */
1939 if (s->control_command && s->control_command->command_next && success) {
1941 /* There is another command to *
1942 * execute, so let's do that. */
1944 log_debug("%s running next command for state %s", u->meta.id, service_state_to_string(s->state));
1945 service_run_next(s, success);
1948 /* No further commands for this step, so let's
1949 * figure out what to do next */
1951 s->control_command = NULL;
1952 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1954 log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state));
1958 case SERVICE_START_PRE:
1960 service_enter_start(s);
1962 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1966 assert(s->type == SERVICE_FORKING);
1968 /* Let's try to load the pid
1969 * file here if we can. We
1970 * ignore the return value,
1971 * since the PID file might
1972 * actually be created by a
1973 * START_POST script */
1977 service_load_pid_file(s);
1979 service_enter_start_post(s);
1981 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1985 case SERVICE_START_POST:
1986 if (success && s->pid_file && !s->main_pid_known) {
1989 /* Hmm, let's see if we can
1990 * load the pid now after the
1991 * start-post scripts got
1994 if ((r = service_load_pid_file(s)) < 0)
1995 log_warning("%s: failed to load PID file %s: %s", UNIT(s)->meta.id, s->pid_file, strerror(-r));
2000 case SERVICE_RELOAD:
2002 service_enter_running(s, true);
2004 service_enter_stop(s, false);
2009 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
2012 case SERVICE_STOP_SIGTERM:
2013 case SERVICE_STOP_SIGKILL:
2014 if (main_pid_good(s) <= 0)
2015 service_enter_stop_post(s, success);
2017 /* If there is still a service
2018 * process around, wait until
2019 * that one quit, too */
2022 case SERVICE_STOP_POST:
2023 case SERVICE_FINAL_SIGTERM:
2024 case SERVICE_FINAL_SIGKILL:
2025 service_enter_dead(s, success, true);
2029 assert_not_reached("Uh, control process died at wrong time.");
2033 assert_not_reached("Got SIGCHLD for unkown PID");
2036 static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
2037 Service *s = SERVICE(u);
2040 assert(elapsed == 1);
2042 assert(w == &s->timer_watch);
2046 case SERVICE_START_PRE:
2048 log_warning("%s operation timed out. Terminating.", u->meta.id);
2049 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2052 case SERVICE_START_POST:
2053 case SERVICE_RELOAD:
2054 log_warning("%s operation timed out. Stopping.", u->meta.id);
2055 service_enter_stop(s, false);
2059 log_warning("%s stopping timed out. Terminating.", u->meta.id);
2060 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2063 case SERVICE_STOP_SIGTERM:
2064 log_warning("%s stopping timed out. Killing.", u->meta.id);
2065 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2068 case SERVICE_STOP_SIGKILL:
2069 /* Uh, wie sent a SIGKILL and it is still not gone?
2070 * Must be something we cannot kill, so let's just be
2071 * weirded out and continue */
2073 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
2074 service_enter_stop_post(s, false);
2077 case SERVICE_STOP_POST:
2078 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
2079 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2082 case SERVICE_FINAL_SIGTERM:
2083 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
2084 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
2087 case SERVICE_FINAL_SIGKILL:
2088 log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", u->meta.id);
2089 service_enter_dead(s, false, true);
2092 case SERVICE_AUTO_RESTART:
2093 log_debug("%s holdoff time over, scheduling restart.", u->meta.id);
2094 service_enter_restart(s);
2098 assert_not_reached("Timeout at wrong time.");
2102 static void service_cgroup_notify_event(Unit *u) {
2103 Service *s = SERVICE(u);
2107 log_debug("%s: cgroup is empty", u->meta.id);
2111 /* Waiting for SIGCHLD is usually more interesting,
2112 * because it includes return codes/signals. Which is
2113 * why we ignore the cgroup events for most cases,
2114 * except when we don't know pid which to expect the
2117 case SERVICE_RUNNING:
2118 service_enter_running(s, true);
2126 static int service_enumerate(Manager *m) {
2130 char *path = NULL, *fpath = NULL, *name = NULL;
2135 STRV_FOREACH(p, m->sysvrcnd_path)
2136 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
2141 if (asprintf(&path, "%s/%s", *p, rcnd_table[i].path) < 0) {
2149 if (!(d = opendir(path))) {
2150 if (errno != ENOENT)
2151 log_warning("opendir() failed on %s: %s", path, strerror(errno));
2156 while ((de = readdir(d))) {
2160 if (ignore_file(de->d_name))
2163 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
2166 if (strlen(de->d_name) < 4)
2169 a = undecchar(de->d_name[1]);
2170 b = undecchar(de->d_name[2]);
2177 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i].path, de->d_name) < 0) {
2182 if (access(fpath, X_OK) < 0) {
2184 if (errno != ENOENT)
2185 log_warning("access() failed on %s: %s", fpath, strerror(errno));
2192 if (asprintf(&name, "%s.service", de->d_name+3) < 0) {
2197 if ((r = manager_load_unit_prepare(m, name, NULL, &service)) < 0)
2200 if (de->d_name[0] == 'S' &&
2201 (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_BASIC))
2202 SERVICE(service)->sysv_start_priority = a*10 + b;
2204 manager_dispatch_load_queue(m);
2205 service = unit_follow_merge(service);
2207 if (de->d_name[0] == 'S') {
2208 Unit *runlevel_target;
2210 if ((r = manager_load_unit(m, rcnd_table[i].target, NULL, &runlevel_target)) < 0)
2213 if ((r = unit_add_dependency(runlevel_target, UNIT_WANTS, service, true)) < 0)
2216 if ((r = unit_add_dependency(service, UNIT_BEFORE, runlevel_target, true)) < 0)
2219 } else if (de->d_name[0] == 'K' && rcnd_table[i].type == RUNLEVEL_DOWN) {
2220 Unit *shutdown_target;
2222 /* We honour K links only for
2223 * halt/reboot. For the normal
2224 * runlevels we assume the
2226 * implicitly added by the
2227 * core logic. Also, we don't
2228 * really distuingish here
2229 * between the runlevels 0 and
2230 * 6 and just add them to the
2231 * special shutdown target. */
2233 if ((r = manager_load_unit(m, SPECIAL_SHUTDOWN_TARGET, NULL, &shutdown_target)) < 0)
2236 if ((r = unit_add_dependency(service, UNIT_CONFLICTS, shutdown_target, true)) < 0)
2239 if ((r = unit_add_dependency(service, UNIT_BEFORE, shutdown_target, true)) < 0)
2256 static void service_bus_name_owner_change(
2259 const char *old_owner,
2260 const char *new_owner) {
2262 Service *s = SERVICE(u);
2267 assert(streq(s->bus_name, name));
2268 assert(old_owner || new_owner);
2270 if (old_owner && new_owner)
2271 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->meta.id, name, old_owner, new_owner);
2273 log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner);
2275 log_debug("%s's D-Bus name %s now registered by %s", u->meta.id, name, new_owner);
2277 s->bus_name_good = !!new_owner;
2279 if (s->type == SERVICE_DBUS) {
2281 /* service_enter_running() will figure out what to
2283 if (s->state == SERVICE_RUNNING)
2284 service_enter_running(s, true);
2285 else if (s->state == SERVICE_START && new_owner)
2286 service_enter_start_post(s);
2288 } else if (new_owner &&
2290 (s->state == SERVICE_START ||
2291 s->state == SERVICE_START_POST ||
2292 s->state == SERVICE_RUNNING ||
2293 s->state == SERVICE_RELOAD)) {
2295 /* Try to acquire PID from bus service */
2296 log_debug("Trying to acquire PID from D-Bus name...");
2298 bus_query_pid(u->meta.manager, name);
2302 static void service_bus_query_pid_done(
2307 Service *s = SERVICE(u);
2312 log_debug("%s's D-Bus name %s is now owned by process %u", u->meta.id, name, (unsigned) pid);
2314 if (s->main_pid <= 0 &&
2315 (s->state == SERVICE_START ||
2316 s->state == SERVICE_START_POST ||
2317 s->state == SERVICE_RUNNING ||
2318 s->state == SERVICE_RELOAD))
2322 int service_set_socket_fd(Service *s, int fd) {
2326 /* This is called by the socket code when instantiating a new
2327 * service for a stream socket and the socket needs to be
2330 if (UNIT(s)->meta.load_state != UNIT_LOADED)
2333 if (s->socket_fd >= 0)
2336 if (s->state != SERVICE_DEAD)
2340 s->got_socket_fd = true;
2344 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
2345 [SERVICE_DEAD] = "dead",
2346 [SERVICE_START_PRE] = "start-pre",
2347 [SERVICE_START] = "start",
2348 [SERVICE_START_POST] = "start-post",
2349 [SERVICE_RUNNING] = "running",
2350 [SERVICE_EXITED] = "exited",
2351 [SERVICE_RELOAD] = "reload",
2352 [SERVICE_STOP] = "stop",
2353 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
2354 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
2355 [SERVICE_STOP_POST] = "stop-post",
2356 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
2357 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
2358 [SERVICE_MAINTAINANCE] = "maintainance",
2359 [SERVICE_AUTO_RESTART] = "auto-restart",
2362 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
2364 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
2365 [SERVICE_ONCE] = "once",
2366 [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
2367 [SERVICE_RESTART_ALWAYS] = "restart-always",
2370 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
2372 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
2373 [SERVICE_FORKING] = "forking",
2374 [SERVICE_SIMPLE] = "simple",
2375 [SERVICE_FINISH] = "finish",
2376 [SERVICE_DBUS] = "dbus"
2379 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
2381 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
2382 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
2383 [SERVICE_EXEC_START] = "ExecStart",
2384 [SERVICE_EXEC_START_POST] = "ExecStartPost",
2385 [SERVICE_EXEC_RELOAD] = "ExecReload",
2386 [SERVICE_EXEC_STOP] = "ExecStop",
2387 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
2390 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
2392 const UnitVTable service_vtable = {
2393 .suffix = ".service",
2395 .init = service_init,
2396 .done = service_done,
2397 .load = service_load,
2399 .coldplug = service_coldplug,
2401 .dump = service_dump,
2403 .start = service_start,
2404 .stop = service_stop,
2405 .reload = service_reload,
2407 .can_reload = service_can_reload,
2409 .serialize = service_serialize,
2410 .deserialize_item = service_deserialize_item,
2412 .active_state = service_active_state,
2413 .sub_state_to_string = service_sub_state_to_string,
2415 .check_gc = service_check_gc,
2416 .check_snapshot = service_check_snapshot,
2418 .sigchld_event = service_sigchld_event,
2419 .timer_event = service_timer_event,
2421 .cgroup_notify_empty = service_cgroup_notify_event,
2423 .bus_name_owner_change = service_bus_name_owner_change,
2424 .bus_query_pid_done = service_bus_query_pid_done,
2426 .bus_message_handler = bus_service_message_handler,
2428 .enumerate = service_enumerate