1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
29 #include "load-fragment.h"
30 #include "load-dropin.h"
34 #define COMMENTS "#;\n"
35 #define NEWLINES "\n\r"
38 static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
39 [SERVICE_DEAD] = UNIT_INACTIVE,
40 [SERVICE_START_PRE] = UNIT_ACTIVATING,
41 [SERVICE_START] = UNIT_ACTIVATING,
42 [SERVICE_START_POST] = UNIT_ACTIVATING,
43 [SERVICE_RUNNING] = UNIT_ACTIVE,
44 [SERVICE_RELOAD] = UNIT_ACTIVE_RELOADING,
45 [SERVICE_STOP] = UNIT_DEACTIVATING,
46 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
47 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
48 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
49 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
50 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
51 [SERVICE_MAINTAINANCE] = UNIT_INACTIVE,
52 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING,
55 static void service_done(Unit *u) {
56 Service *s = SERVICE(u);
66 exec_context_done(&s->exec_context);
67 exec_command_free_array(s->exec_command, _SERVICE_EXEC_MAX);
68 s->control_command = NULL;
70 /* This will leak a process, but at least no memory or any of
72 if (s->main_pid > 0) {
73 unit_unwatch_pid(u, s->main_pid);
77 if (s->control_pid > 0) {
78 unit_unwatch_pid(u, s->control_pid);
82 unit_unwatch_timer(u, &s->timer_watch);
85 static int sysv_translate_name(const char *name, char **_r) {
87 static const char * const table[] = {
88 "$local_fs", SPECIAL_LOCAL_FS_TARGET,
89 "$network", SPECIAL_NETWORK_TARGET,
90 "$named", SPECIAL_NSS_LOOKUP_TARGET,
91 "$portmap", SPECIAL_RPCBIND_TARGET,
92 "$remote_fs", SPECIAL_REMOTE_FS_TARGET,
93 "$syslog", SPECIAL_SYSLOG_TARGET,
94 "$time", SPECIAL_RTC_SET_TARGET
100 for (i = 0; i < ELEMENTSOF(table); i += 2)
101 if (streq(table[i], name)) {
102 if (!(r = strdup(table[i+1])))
111 if (asprintf(&r, "%s.service", name) < 0)
122 static int sysv_chkconfig_order(Service *s) {
128 if (s->sysv_start_priority < 0)
131 /* If no LSB header is found we try to order init scripts via
132 * the start priority of the chkconfig header. */
134 LIST_FOREACH(units_per_type, other, UNIT(s)->meta.manager->units_per_type[UNIT_SERVICE]) {
138 t = (Service*) other;
143 if (t->sysv_start_priority < 0)
146 if (t->sysv_start_priority < s->sysv_start_priority)
148 else if (t->sysv_start_priority > s->sysv_start_priority)
153 /* FIXME: Maybe we should compare the name here lexicographically? */
155 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t))) < 0)
162 static ExecCommand *exec_command_new(const char *path, const char *arg1) {
165 if (!(c = new0(ExecCommand, 1)))
168 if (!(c->path = strdup(path))) {
173 if (!(c->argv = strv_new(path, arg1, NULL))) {
182 static int sysv_exec_commands(Service *s) {
186 assert(s->sysv_path);
188 if (!(c = exec_command_new(s->sysv_path, "start")))
190 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
192 if (!(c = exec_command_new(s->sysv_path, "stop")))
194 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
196 if (!(c = exec_command_new(s->sysv_path, "reload")))
198 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
203 static int service_load_sysv_path(Service *s, const char *path) {
214 bool has_lsb = false;
218 if (!(f = fopen(path, "re"))) {
219 r = errno == ENOENT ? 0 : -errno;
223 s->type = SERVICE_FORKING;
224 s->restart = SERVICE_ONCE;
227 if (!(s->sysv_path = strdup(path))) {
233 char l[LINE_MAX], *t;
235 if (!fgets(l, sizeof(l), f)) {
240 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
250 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
256 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
262 t += strspn(t, WHITESPACE);
264 if (state == NORMAL) {
266 /* Try to parse Red Hat style chkconfig headers */
268 if (startswith(t, "chkconfig:")) {
273 if (sscanf(t+10, "%*15s %i %*i",
274 &start_priority) != 1) {
276 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
280 if (start_priority < 0 || start_priority > 99) {
281 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
285 s->sysv_start_priority = start_priority;
287 } else if (startswith(t, "description:")) {
289 size_t k = strlen(t);
292 if (t[k-1] == '\\') {
297 if (!(d = strdup(strstrip(t+12)))) {
302 free(u->meta.description);
303 u->meta.description = d;
305 } else if (startswith(t, "pidfile:")) {
312 if (!path_is_absolute(fn)) {
313 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
317 if (!(fn = strdup(fn))) {
326 } else if (state == DESCRIPTION) {
328 /* Try to parse Red Hat style description
331 size_t k = strlen(t);
339 assert(u->meta.description);
340 if (asprintf(&d, "%s %s", u->meta.description, strstrip(t)) < 0) {
345 free(u->meta.description);
346 u->meta.description = d;
348 } else if (state == LSB || state == LSB_DESCRIPTION) {
350 if (startswith(t, "Provides:")) {
356 FOREACH_WORD(w, z, t+9, i) {
359 if (!(n = strndup(w, z))) {
364 r = sysv_translate_name(n, &m);
373 r = unit_add_name(u, m);
380 } else if (startswith(t, "Required-Start:") ||
381 startswith(t, "Should-Start:")) {
387 FOREACH_WORD(w, z, strchr(t, ':')+1, i) {
390 if (!(n = strndup(w, z))) {
395 r = sysv_translate_name(n, &m);
404 if (!(r = unit_add_dependency_by_name(u, UNIT_AFTER, m)) < 0) {
409 r = unit_add_dependency_by_name(
411 startswith(t, "Required-Start:") ? UNIT_REQUIRES : UNIT_WANTS,
419 } else if (startswith(t, "Description:")) {
422 state = LSB_DESCRIPTION;
424 if (!(d = strdup(strstrip(t+12)))) {
429 free(u->meta.description);
430 u->meta.description = d;
432 } else if (startswith(t, "Short-Description:") && !u->meta.description) {
435 /* We use the short description only
436 * if no long description is set. */
440 if (!(d = strdup(strstrip(t+18)))) {
445 free(u->meta.description);
446 u->meta.description = d;
448 } else if (state == LSB_DESCRIPTION) {
450 if (startswith(l, "#\t") || startswith(l, "# ")) {
453 assert(u->meta.description);
454 if (asprintf(&d, "%s %s", u->meta.description, t) < 0) {
459 free(u->meta.description);
460 u->meta.description = d;
467 /* If the init script has no LSB header, then let's
468 * enforce the ordering via the chkconfig
472 if ((r = sysv_chkconfig_order(s)) < 0)
475 if ((r = sysv_exec_commands(s)) < 0)
488 static int service_load_sysv_name(Service *s, const char *name) {
494 STRV_FOREACH(p, UNIT(s)->meta.manager->sysvinit_path) {
498 if (asprintf(&path, "%s/%s", *p, name) < 0)
501 assert(endswith(path, ".service"));
502 path[strlen(path)-8] = 0;
504 r = service_load_sysv_path(s, path);
514 static int service_load_sysv(Service *s) {
521 /* Load service data from SysV init scripts, preferably with
524 if (strv_isempty(UNIT(s)->meta.manager->sysvinit_path))
527 if ((t = unit_id(UNIT(s))))
528 if ((r = service_load_sysv_name(s, t)) != 0)
531 SET_FOREACH(t, UNIT(s)->meta.names, i)
532 if ((r == service_load_sysv_name(s, t)) != 0)
538 static int service_init(Unit *u) {
540 Service *s = SERVICE(u);
544 /* First, reset everything to the defaults, in case this is a
550 s->timeout_usec = DEFAULT_TIMEOUT_USEC;
551 s->restart_usec = DEFAULT_RESTART_USEC;
553 exec_context_init(&s->exec_context);
555 s->timer_watch.type = WATCH_INVALID;
557 s->state = SERVICE_DEAD;
559 s->sysv_start_priority = -1;
561 RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
563 /* Load a .service file */
564 if ((r = unit_load_fragment(u)) < 0) {
569 /* Load a classic init script as a fallback, if we couldn*t find anything */
571 if ((r = service_load_sysv(s)) <= 0) {
573 return r < 0 ? r : -ENOENT;
576 /* Load dropin directory data */
577 if ((r = unit_load_dropin(u)) < 0) {
585 static void service_dump(Unit *u, FILE *f, const char *prefix) {
587 ServiceExecCommand c;
588 Service *s = SERVICE(u);
594 p2 = strappend(prefix, "\t");
595 prefix2 = p2 ? p2 : prefix;
598 "%sService State: %s\n",
599 prefix, service_state_to_string(s->state));
604 prefix, s->pid_file);
607 exec_context_dump(&s->exec_context, f, prefix);
609 for (c = 0; c < _SERVICE_EXEC_MAX; c++) {
611 if (!s->exec_command[c])
614 fprintf(f, "%s→ %s:\n",
615 prefix, service_exec_command_to_string(c));
617 exec_command_dump_list(s->exec_command[c], f, prefix2);
622 "%sSysV Init Script Path: %s\n",
623 prefix, s->sysv_path);
625 if (s->sysv_start_priority >= 0)
627 "%sSysV Start Priority: %i\n",
628 prefix, s->sysv_start_priority);
633 static int service_load_pid_file(Service *s) {
640 if (s->main_pid_known)
646 if ((r = read_one_line_file(s->pid_file, &k)) < 0)
649 if ((r = safe_atolu(k, &p)) < 0) {
654 if ((unsigned long) (pid_t) p != p)
658 s->main_pid_known = true;
663 static int service_get_sockets(Service *s, Set **_set) {
672 /* Collects all Socket objects that belong to this
673 * service. Note that a service might have multiple sockets
674 * via multiple names. */
676 if (!(set = set_new(NULL, NULL)))
679 SET_FOREACH(t, UNIT(s)->meta.names, i) {
683 /* Look for all socket objects that go by any of our
684 * units and collect their fds */
686 if (!(k = unit_name_change_suffix(t, ".socket"))) {
691 p = manager_get_unit(UNIT(s)->meta.manager, k);
696 if ((r = set_put(set, p)) < 0)
709 static int service_notify_sockets(Service *s) {
717 /* Notifies all our sockets when we die */
719 if ((r = service_get_sockets(s, &set)) < 0)
722 SET_FOREACH(sock, set, i)
723 socket_notify_service_dead(sock);
730 static void service_set_state(Service *s, ServiceState state) {
731 ServiceState old_state;
734 old_state = s->state;
737 if (state != SERVICE_START_PRE &&
738 state != SERVICE_START &&
739 state != SERVICE_START_POST &&
740 state != SERVICE_RELOAD &&
741 state != SERVICE_STOP &&
742 state != SERVICE_STOP_SIGTERM &&
743 state != SERVICE_STOP_SIGKILL &&
744 state != SERVICE_STOP_POST &&
745 state != SERVICE_FINAL_SIGTERM &&
746 state != SERVICE_FINAL_SIGKILL &&
747 state != SERVICE_AUTO_RESTART)
748 unit_unwatch_timer(UNIT(s), &s->timer_watch);
750 if (state != SERVICE_START &&
751 state != SERVICE_START_POST &&
752 state != SERVICE_RUNNING &&
753 state != SERVICE_RELOAD &&
754 state != SERVICE_STOP &&
755 state != SERVICE_STOP_SIGTERM &&
756 state != SERVICE_STOP_SIGKILL)
757 if (s->main_pid > 0) {
758 unit_unwatch_pid(UNIT(s), s->main_pid);
762 if (state != SERVICE_START_PRE &&
763 state != SERVICE_START &&
764 state != SERVICE_START_POST &&
765 state != SERVICE_RELOAD &&
766 state != SERVICE_STOP &&
767 state != SERVICE_STOP_SIGTERM &&
768 state != SERVICE_STOP_SIGKILL &&
769 state != SERVICE_STOP_POST &&
770 state != SERVICE_FINAL_SIGTERM &&
771 state != SERVICE_FINAL_SIGKILL)
772 if (s->control_pid > 0) {
773 unit_unwatch_pid(UNIT(s), s->control_pid);
777 if (state != SERVICE_START_PRE &&
778 state != SERVICE_START &&
779 state != SERVICE_START_POST &&
780 state != SERVICE_RELOAD &&
781 state != SERVICE_STOP &&
782 state != SERVICE_STOP_POST)
783 s->control_command = NULL;
785 if (state == SERVICE_DEAD ||
786 state == SERVICE_STOP ||
787 state == SERVICE_STOP_SIGTERM ||
788 state == SERVICE_STOP_SIGKILL ||
789 state == SERVICE_STOP_POST ||
790 state == SERVICE_FINAL_SIGTERM ||
791 state == SERVICE_FINAL_SIGKILL ||
792 state == SERVICE_MAINTAINANCE ||
793 state == SERVICE_AUTO_RESTART)
794 service_notify_sockets(s);
796 log_debug("%s changed %s → %s", unit_id(UNIT(s)), service_state_to_string(old_state), service_state_to_string(state));
798 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
801 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
813 if ((r = service_get_sockets(s, &set)) < 0)
816 SET_FOREACH(sock, set, i) {
820 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
832 if (!(t = new(int, rn_fds+cn_fds))) {
838 memcpy(t, rfds, rn_fds);
839 memcpy(t+rn_fds, cfds, cn_fds);
844 rn_fds = rn_fds+cn_fds;
862 static int service_spawn(Service *s, ExecCommand *c, bool timeout, bool pass_fds, pid_t *_pid) {
873 if ((r = service_collect_fds(s, &fds, &n_fds)) < 0)
877 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
880 unit_unwatch_timer(UNIT(s), &s->timer_watch);
882 if ((r = exec_spawn(c, &s->exec_context, fds, n_fds, &pid)) < 0)
885 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
886 /* FIXME: we need to do something here */
898 unit_unwatch_timer(UNIT(s), &s->timer_watch);
903 static void service_enter_dead(Service *s, bool success, bool allow_restart) {
911 (s->restart == SERVICE_RESTART_ALWAYS ||
912 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
914 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
917 service_set_state(s, SERVICE_AUTO_RESTART);
919 service_set_state(s, s->failure ? SERVICE_MAINTAINANCE : SERVICE_DEAD);
924 log_warning("%s failed to run install restart timer: %s", unit_id(UNIT(s)), strerror(-r));
925 service_enter_dead(s, false, false);
928 static void service_enter_signal(Service *s, ServiceState state, bool success);
930 static void service_enter_stop_post(Service *s, bool success) {
937 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST]))
938 if ((r = service_spawn(s, s->control_command, true, false, &s->control_pid)) < 0)
942 service_set_state(s, SERVICE_STOP_POST);
944 if (!s->control_command)
945 service_enter_dead(s, true, true);
950 log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s)), strerror(-r));
951 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
954 static void service_enter_signal(Service *s, ServiceState state, bool success) {
963 if (s->main_pid > 0 || s->control_pid > 0) {
966 sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
969 if (s->main_pid > 0) {
970 if (kill(s->main_pid, sig) < 0 && errno != ESRCH)
976 if (s->control_pid > 0) {
977 if (kill(s->control_pid, sig) < 0 && errno != ESRCH)
987 service_set_state(s, state);
989 if (s->main_pid <= 0 && s->control_pid <= 0)
990 service_enter_dead(s, true, true);
995 log_warning("%s failed to kill processes: %s", unit_id(UNIT(s)), strerror(-r));
999 service_set_state(s, state);
1000 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1001 service_enter_stop_post(s, false);
1003 service_enter_dead(s, false, true);
1006 static void service_enter_stop(Service *s, bool success) {
1013 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP]))
1014 if ((r = service_spawn(s, s->control_command, true, false, &s->control_pid)) < 0)
1017 service_set_state(s, SERVICE_STOP);
1019 if (!s->control_command)
1020 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1025 log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s)), strerror(-r));
1026 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1029 static void service_enter_start_post(Service *s) {
1033 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST]))
1034 if ((r = service_spawn(s, s->control_command, true, false, &s->control_pid)) < 0)
1038 service_set_state(s, SERVICE_START_POST);
1040 if (!s->control_command)
1041 service_set_state(s, SERVICE_RUNNING);
1046 log_warning("%s failed to run start-post executable: %s", unit_id(UNIT(s)), strerror(-r));
1047 service_enter_stop(s, false);
1050 static void service_enter_start(Service *s) {
1056 assert(s->exec_command[SERVICE_EXEC_START]);
1057 assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
1059 if ((r = service_spawn(s, s->exec_command[SERVICE_EXEC_START], s->type == SERVICE_FORKING, true, &pid)) < 0)
1062 service_set_state(s, SERVICE_START);
1064 if (s->type == SERVICE_SIMPLE) {
1065 /* For simple services we immediately start
1066 * the START_POST binaries. */
1069 s->main_pid_known = true;
1070 service_enter_start_post(s);
1072 } else if (s->type == SERVICE_FORKING) {
1074 /* For forking services we wait until the start
1075 * process exited. */
1077 s->control_pid = pid;
1078 s->control_command = s->exec_command[SERVICE_EXEC_START];
1079 } else if (s->type == SERVICE_FINISH) {
1081 /* For finishing services we wait until the start
1082 * process exited, too, but it is our main process. */
1085 s->control_command = s->exec_command[SERVICE_EXEC_START];
1087 assert_not_reached("Unknown service type");
1092 log_warning("%s failed to run start exectuable: %s", unit_id(UNIT(s)), strerror(-r));
1093 service_enter_stop(s, false);
1096 static void service_enter_start_pre(Service *s) {
1101 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE]))
1102 if ((r = service_spawn(s, s->control_command, true, false, &s->control_pid)) < 0)
1105 service_set_state(s, SERVICE_START_PRE);
1107 if (!s->control_command)
1108 service_enter_start(s);
1113 log_warning("%s failed to run start-pre executable: %s", unit_id(UNIT(s)), strerror(-r));
1114 service_enter_dead(s, false, true);
1117 static void service_enter_restart(Service *s) {
1121 if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL)) < 0)
1124 log_debug("%s scheduled restart job.", unit_id(UNIT(s)));
1125 service_enter_dead(s, true, false);
1130 log_warning("%s failed to schedule restart job: %s", unit_id(UNIT(s)), strerror(-r));
1131 service_enter_dead(s, false, false);
1134 static void service_enter_reload(Service *s) {
1139 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD]))
1140 if ((r = service_spawn(s, s->control_command, true, false, &s->control_pid)) < 0)
1143 service_set_state(s, SERVICE_RELOAD);
1145 if (!s->control_command)
1146 service_set_state(s, SERVICE_RUNNING);
1151 log_warning("%s failed to run reload executable: %s", unit_id(UNIT(s)), strerror(-r));
1152 service_enter_stop(s, false);
1155 static void service_run_next(Service *s, bool success) {
1159 assert(s->control_command);
1160 assert(s->control_command->command_next);
1165 s->control_command = s->control_command->command_next;
1167 if ((r = service_spawn(s, s->control_command, true, false, &s->control_pid)) < 0)
1173 log_warning("%s failed to run spawn next executable: %s", unit_id(UNIT(s)), strerror(-r));
1175 if (s->state == SERVICE_STOP)
1176 service_enter_stop_post(s, false);
1177 else if (s->state == SERVICE_STOP_POST)
1178 service_enter_dead(s, false, true);
1180 service_enter_stop(s, false);
1183 static int service_start(Unit *u) {
1184 Service *s = SERVICE(u);
1188 /* We cannot fulfill this request right now, try again later
1190 if (s->state == SERVICE_STOP ||
1191 s->state == SERVICE_STOP_SIGTERM ||
1192 s->state == SERVICE_STOP_SIGKILL ||
1193 s->state == SERVICE_STOP_POST ||
1194 s->state == SERVICE_FINAL_SIGTERM ||
1195 s->state == SERVICE_FINAL_SIGKILL)
1198 /* Already on it! */
1199 if (s->state == SERVICE_START_PRE ||
1200 s->state == SERVICE_START ||
1201 s->state == SERVICE_START_POST)
1204 assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTAINANCE || s->state == SERVICE_AUTO_RESTART);
1206 /* Make sure we don't enter a busy loop of some kind. */
1207 if (!ratelimit_test(&s->ratelimit)) {
1208 log_warning("%s start request repeated too quickly, refusing to start.", unit_id(u));
1213 s->main_pid_known = false;
1215 service_enter_start_pre(s);
1219 static int service_stop(Unit *u) {
1220 Service *s = SERVICE(u);
1224 if (s->state == SERVICE_START_PRE ||
1225 s->state == SERVICE_START ||
1226 s->state == SERVICE_START_POST ||
1227 s->state == SERVICE_RELOAD)
1230 if (s->state == SERVICE_AUTO_RESTART) {
1231 service_set_state(s, SERVICE_DEAD);
1235 assert(s->state == SERVICE_RUNNING);
1237 service_enter_stop(s, true);
1241 static int service_reload(Unit *u) {
1242 Service *s = SERVICE(u);
1246 assert(s->state == SERVICE_RUNNING);
1248 service_enter_reload(s);
1252 static bool service_can_reload(Unit *u) {
1253 Service *s = SERVICE(u);
1257 return !!s->exec_command[SERVICE_EXEC_RELOAD];
1260 static UnitActiveState service_active_state(Unit *u) {
1263 return state_translation_table[SERVICE(u)->state];
1266 static int main_pid_good(Service *s) {
1269 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1272 /* If we know the pid file, then lets just check if it is
1274 if (s->main_pid_known)
1275 return s->main_pid > 0;
1277 /* We don't know the pid */
1281 static bool control_pid_good(Service *s) {
1284 return s->control_pid > 0;
1287 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
1288 Service *s = SERVICE(u);
1294 success = code == CLD_EXITED && status == 0;
1295 s->failure = s->failure || !success;
1297 if (s->main_pid == pid) {
1299 exec_status_fill(&s->main_exec_status, pid, code, status);
1302 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_FINISH) {
1303 assert(s->exec_command[SERVICE_EXEC_START]);
1304 s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
1307 log_debug("%s: main process exited, code=%s status=%i", unit_id(u), sigchld_code_to_string(code), status);
1309 /* The service exited, so the service is officially
1314 case SERVICE_START_POST:
1315 case SERVICE_RELOAD:
1317 /* Need to wait until the operation is
1322 assert(s->type == SERVICE_FINISH);
1324 /* This was our main goal, so let's go on */
1326 service_enter_start_post(s);
1328 service_enter_stop(s, false);
1331 case SERVICE_RUNNING:
1332 service_enter_stop(s, success);
1335 case SERVICE_STOP_SIGTERM:
1336 case SERVICE_STOP_SIGKILL:
1338 if (!control_pid_good(s))
1339 service_enter_stop_post(s, success);
1341 /* If there is still a control process, wait for that first */
1345 assert_not_reached("Uh, main process died at wrong time.");
1348 } else if (s->control_pid == pid) {
1349 assert(s->control_command);
1351 exec_status_fill(&s->control_command->exec_status, pid, code, status);
1354 log_debug("%s: control process exited, code=%s status=%i", unit_id(u), sigchld_code_to_string(code), status);
1356 /* If we are shutting things down anyway we
1357 * don't care about failing commands. */
1359 if (s->control_command->command_next &&
1360 (success || (s->state == SERVICE_EXEC_STOP || s->state == SERVICE_EXEC_STOP_POST)))
1362 /* There is another command to *
1363 * execute, so let's do that. */
1365 service_run_next(s, success);
1368 /* No further commands for this step, so let's
1369 * figure out what to do next */
1371 log_debug("%s got final SIGCHLD for state %s", unit_id(u), service_state_to_string(s->state));
1375 case SERVICE_START_PRE:
1377 service_enter_start(s);
1379 service_enter_stop(s, false);
1383 assert(s->type == SERVICE_FORKING);
1385 /* Let's try to load the pid
1386 * file here if we can. We
1387 * ignore the return value,
1388 * since the PID file might
1389 * actually be created by a
1390 * START_POST script */
1394 service_load_pid_file(s);
1396 service_enter_start_post(s);
1398 service_enter_stop(s, false);
1402 case SERVICE_START_POST:
1403 if (success && s->pid_file && !s->main_pid_known) {
1406 /* Hmm, let's see if we can
1407 * load the pid now after the
1408 * start-post scripts got
1411 if ((r = service_load_pid_file(s)) < 0)
1412 log_warning("%s: failed to load PID file %s: %s", unit_id(UNIT(s)), s->pid_file, strerror(-r));
1417 case SERVICE_RELOAD:
1419 if (main_pid_good(s) != 0)
1420 service_set_state(s, SERVICE_RUNNING);
1422 service_enter_stop(s, true);
1424 service_enter_stop(s, false);
1429 if (main_pid_good(s) > 0)
1430 /* Still not dead and we know the PID? Let's go hunting. */
1431 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
1433 service_enter_stop_post(s, success);
1436 case SERVICE_STOP_SIGTERM:
1437 case SERVICE_STOP_SIGKILL:
1438 if (main_pid_good(s) <= 0)
1439 service_enter_stop_post(s, success);
1441 /* If there is still a service
1442 * process around, wait until
1443 * that one quit, too */
1446 case SERVICE_STOP_POST:
1447 case SERVICE_FINAL_SIGTERM:
1448 case SERVICE_FINAL_SIGKILL:
1449 service_enter_dead(s, success, true);
1453 assert_not_reached("Uh, control process died at wrong time.");
1457 assert_not_reached("Got SIGCHLD for unkown PID");
1460 static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
1461 Service *s = SERVICE(u);
1464 assert(elapsed == 1);
1466 assert(w == &s->timer_watch);
1470 case SERVICE_START_PRE:
1472 case SERVICE_START_POST:
1473 case SERVICE_RELOAD:
1474 log_warning("%s operation timed out. Stopping.", unit_id(u));
1475 service_enter_stop(s, false);
1479 log_warning("%s stopping timed out. Terminating.", unit_id(u));
1480 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1483 case SERVICE_STOP_SIGTERM:
1484 log_warning("%s stopping timed out. Killing.", unit_id(u));
1485 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
1488 case SERVICE_STOP_SIGKILL:
1489 /* Uh, wie sent a SIGKILL and it is still not gone?
1490 * Must be something we cannot kill, so let's just be
1491 * weirded out and continue */
1493 log_warning("%s still around after SIGKILL. Ignoring.", unit_id(u));
1494 service_enter_stop_post(s, false);
1497 case SERVICE_STOP_POST:
1498 log_warning("%s stopping timed out (2). Terminating.", unit_id(u));
1499 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1502 case SERVICE_FINAL_SIGTERM:
1503 log_warning("%s stopping timed out (2). Killing.", unit_id(u));
1504 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
1507 case SERVICE_FINAL_SIGKILL:
1508 log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", unit_id(u));
1509 service_enter_dead(s, false, true);
1512 case SERVICE_AUTO_RESTART:
1513 log_debug("%s holdoff time over, scheduling restart.", unit_id(u));
1514 service_enter_restart(s);
1518 assert_not_reached("Timeout at wrong time.");
1522 static int service_enumerate(Manager *m) {
1524 static const char * const rcnd[] = {
1525 "../rc0.d", SPECIAL_RUNLEVEL0_TARGET,
1526 "../rc1.d", SPECIAL_RUNLEVEL1_TARGET,
1527 "../rc2.d", SPECIAL_RUNLEVEL2_TARGET,
1528 "../rc3.d", SPECIAL_RUNLEVEL3_TARGET,
1529 "../rc4.d", SPECIAL_RUNLEVEL4_TARGET,
1530 "../rc5.d", SPECIAL_RUNLEVEL5_TARGET,
1531 "../rc6.d", SPECIAL_RUNLEVEL6_TARGET
1537 char *path = NULL, *fpath = NULL, *name = NULL;
1542 STRV_FOREACH(p, m->sysvinit_path)
1543 for (i = 0; i < ELEMENTSOF(rcnd); i += 2) {
1548 if (asprintf(&path, "%s/%s", *p, rcnd[i]) < 0) {
1556 if (!(d = opendir(path))) {
1557 if (errno != ENOENT)
1558 log_warning("opendir() failed on %s: %s", path, strerror(errno));
1563 while ((de = readdir(d))) {
1564 Unit *runlevel, *service;
1566 if (ignore_file(de->d_name))
1569 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
1572 if (strlen(de->d_name) < 4)
1577 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd[i], de->d_name) < 0) {
1582 if (access(fpath, X_OK) < 0) {
1584 if (errno != ENOENT)
1585 log_warning("access() failed on %s: %s", fpath, strerror(errno));
1592 if (asprintf(&name, "%s.service", de->d_name+3) < 0) {
1597 if ((r = manager_load_unit(m, name, &service)) < 0)
1600 /* Don't allow that non-SysV services
1601 * are started via rcN.d/ links. */
1602 if (!SERVICE(service)->sysv_path)
1605 if ((r = manager_load_unit(m, rcnd[i+1], &runlevel)) < 0)
1608 if (de->d_name[0] == 'S') {
1609 if ((r = unit_add_dependency(runlevel, UNIT_WANTS, service)) < 0)
1612 if ((r = unit_add_dependency(runlevel, UNIT_AFTER, service)) < 0)
1615 if ((r = unit_add_dependency(runlevel, UNIT_CONFLICTS, service)) < 0)
1618 if ((r = unit_add_dependency(runlevel, UNIT_BEFORE, service)) < 0)
1635 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
1636 [SERVICE_DEAD] = "dead",
1637 [SERVICE_START_PRE] = "start-pre",
1638 [SERVICE_START] = "start",
1639 [SERVICE_START_POST] = "start-post",
1640 [SERVICE_RUNNING] = "running",
1641 [SERVICE_RELOAD] = "reload",
1642 [SERVICE_STOP] = "stop",
1643 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
1644 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
1645 [SERVICE_STOP_POST] = "stop-post",
1646 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
1647 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
1648 [SERVICE_MAINTAINANCE] = "maintainance",
1649 [SERVICE_AUTO_RESTART] = "auto-restart",
1652 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
1654 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
1655 [SERVICE_ONCE] = "once",
1656 [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
1657 [SERVICE_RESTART_ALWAYS] = "restart-on-failure",
1660 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
1662 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
1663 [SERVICE_FORKING] = "forking",
1664 [SERVICE_SIMPLE] = "simple",
1665 [SERVICE_FINISH] = "finish"
1668 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
1670 static const char* const service_exec_command_table[_SERVICE_EXEC_MAX] = {
1671 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
1672 [SERVICE_EXEC_START] = "ExecStart",
1673 [SERVICE_EXEC_START_POST] = "ExecStartPost",
1674 [SERVICE_EXEC_RELOAD] = "ExecReload",
1675 [SERVICE_EXEC_STOP] = "ExecStop",
1676 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
1679 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
1681 const UnitVTable service_vtable = {
1682 .suffix = ".service",
1684 .init = service_init,
1685 .done = service_done,
1687 .dump = service_dump,
1689 .start = service_start,
1690 .stop = service_stop,
1691 .reload = service_reload,
1693 .can_reload = service_can_reload,
1695 .active_state = service_active_state,
1697 .sigchld_event = service_sigchld_event,
1698 .timer_event = service_timer_event,
1700 .enumerate = service_enumerate