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;
560 s->permissions_start_only = false;
561 s->root_directory_start_only = false;
563 RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
565 /* Load a .service file */
566 if ((r = unit_load_fragment(u)) < 0) {
571 /* Load a classic init script as a fallback, if we couldn*t find anything */
573 if ((r = service_load_sysv(s)) <= 0) {
575 return r < 0 ? r : -ENOENT;
578 /* Load dropin directory data */
579 if ((r = unit_load_dropin(u)) < 0) {
587 static void service_dump(Unit *u, FILE *f, const char *prefix) {
589 ServiceExecCommand c;
590 Service *s = SERVICE(u);
596 p2 = strappend(prefix, "\t");
597 prefix2 = p2 ? p2 : prefix;
600 "%sService State: %s\n"
601 "%sPermissionsStartOnly: %s\n"
602 "%sRootDirectoryStartOnly: %s\n",
603 prefix, service_state_to_string(s->state),
604 prefix, yes_no(s->permissions_start_only),
605 prefix, yes_no(s->root_directory_start_only));
610 prefix, s->pid_file);
613 exec_context_dump(&s->exec_context, f, prefix);
615 for (c = 0; c < _SERVICE_EXEC_MAX; c++) {
617 if (!s->exec_command[c])
620 fprintf(f, "%s→ %s:\n",
621 prefix, service_exec_command_to_string(c));
623 exec_command_dump_list(s->exec_command[c], f, prefix2);
628 "%sSysV Init Script Path: %s\n",
629 prefix, s->sysv_path);
631 if (s->sysv_start_priority >= 0)
633 "%sSysV Start Priority: %i\n",
634 prefix, s->sysv_start_priority);
639 static int service_load_pid_file(Service *s) {
646 if (s->main_pid_known)
652 if ((r = read_one_line_file(s->pid_file, &k)) < 0)
655 if ((r = safe_atolu(k, &p)) < 0) {
660 if ((unsigned long) (pid_t) p != p)
664 s->main_pid_known = true;
669 static int service_get_sockets(Service *s, Set **_set) {
678 /* Collects all Socket objects that belong to this
679 * service. Note that a service might have multiple sockets
680 * via multiple names. */
682 if (!(set = set_new(NULL, NULL)))
685 SET_FOREACH(t, UNIT(s)->meta.names, i) {
689 /* Look for all socket objects that go by any of our
690 * units and collect their fds */
692 if (!(k = unit_name_change_suffix(t, ".socket"))) {
697 p = manager_get_unit(UNIT(s)->meta.manager, k);
702 if ((r = set_put(set, p)) < 0)
715 static int service_notify_sockets(Service *s) {
723 /* Notifies all our sockets when we die */
725 if ((r = service_get_sockets(s, &set)) < 0)
728 SET_FOREACH(sock, set, i)
729 socket_notify_service_dead(sock);
736 static void service_set_state(Service *s, ServiceState state) {
737 ServiceState old_state;
740 old_state = s->state;
743 if (state != SERVICE_START_PRE &&
744 state != SERVICE_START &&
745 state != SERVICE_START_POST &&
746 state != SERVICE_RELOAD &&
747 state != SERVICE_STOP &&
748 state != SERVICE_STOP_SIGTERM &&
749 state != SERVICE_STOP_SIGKILL &&
750 state != SERVICE_STOP_POST &&
751 state != SERVICE_FINAL_SIGTERM &&
752 state != SERVICE_FINAL_SIGKILL &&
753 state != SERVICE_AUTO_RESTART)
754 unit_unwatch_timer(UNIT(s), &s->timer_watch);
756 if (state != SERVICE_START &&
757 state != SERVICE_START_POST &&
758 state != SERVICE_RUNNING &&
759 state != SERVICE_RELOAD &&
760 state != SERVICE_STOP &&
761 state != SERVICE_STOP_SIGTERM &&
762 state != SERVICE_STOP_SIGKILL)
763 if (s->main_pid > 0) {
764 unit_unwatch_pid(UNIT(s), s->main_pid);
768 if (state != SERVICE_START_PRE &&
769 state != SERVICE_START &&
770 state != SERVICE_START_POST &&
771 state != SERVICE_RELOAD &&
772 state != SERVICE_STOP &&
773 state != SERVICE_STOP_SIGTERM &&
774 state != SERVICE_STOP_SIGKILL &&
775 state != SERVICE_STOP_POST &&
776 state != SERVICE_FINAL_SIGTERM &&
777 state != SERVICE_FINAL_SIGKILL)
778 if (s->control_pid > 0) {
779 unit_unwatch_pid(UNIT(s), s->control_pid);
783 if (state != SERVICE_START_PRE &&
784 state != SERVICE_START &&
785 state != SERVICE_START_POST &&
786 state != SERVICE_RELOAD &&
787 state != SERVICE_STOP &&
788 state != SERVICE_STOP_POST)
789 s->control_command = NULL;
791 if (state == SERVICE_DEAD ||
792 state == SERVICE_STOP ||
793 state == SERVICE_STOP_SIGTERM ||
794 state == SERVICE_STOP_SIGKILL ||
795 state == SERVICE_STOP_POST ||
796 state == SERVICE_FINAL_SIGTERM ||
797 state == SERVICE_FINAL_SIGKILL ||
798 state == SERVICE_MAINTAINANCE ||
799 state == SERVICE_AUTO_RESTART)
800 service_notify_sockets(s);
802 log_debug("%s changed %s → %s", unit_id(UNIT(s)), service_state_to_string(old_state), service_state_to_string(state));
804 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
807 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
819 if ((r = service_get_sockets(s, &set)) < 0)
822 SET_FOREACH(sock, set, i) {
826 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
838 if (!(t = new(int, rn_fds+cn_fds))) {
844 memcpy(t, rfds, rn_fds);
845 memcpy(t+rn_fds, cfds, cn_fds);
850 rn_fds = rn_fds+cn_fds;
868 static int service_spawn(
873 bool apply_permissions,
887 if ((r = service_collect_fds(s, &fds, &n_fds)) < 0)
891 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
894 unit_unwatch_timer(UNIT(s), &s->timer_watch);
896 if ((r = exec_spawn(c,
904 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
905 /* FIXME: we need to do something here */
917 unit_unwatch_timer(UNIT(s), &s->timer_watch);
922 static void service_enter_dead(Service *s, bool success, bool allow_restart) {
930 (s->restart == SERVICE_RESTART_ALWAYS ||
931 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
933 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
936 service_set_state(s, SERVICE_AUTO_RESTART);
938 service_set_state(s, s->failure ? SERVICE_MAINTAINANCE : SERVICE_DEAD);
943 log_warning("%s failed to run install restart timer: %s", unit_id(UNIT(s)), strerror(-r));
944 service_enter_dead(s, false, false);
947 static void service_enter_signal(Service *s, ServiceState state, bool success);
949 static void service_enter_stop_post(Service *s, bool success) {
956 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST]))
957 if ((r = service_spawn(s,
961 !s->permissions_start_only,
962 !s->root_directory_start_only,
963 &s->control_pid)) < 0)
967 service_set_state(s, SERVICE_STOP_POST);
969 if (!s->control_command)
970 service_enter_dead(s, true, true);
975 log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s)), strerror(-r));
976 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
979 static void service_enter_signal(Service *s, ServiceState state, bool success) {
988 if (s->main_pid > 0 || s->control_pid > 0) {
991 sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
994 if (s->main_pid > 0) {
995 if (kill(s->main_pid, sig) < 0 && errno != ESRCH)
1001 if (s->control_pid > 0) {
1002 if (kill(s->control_pid, sig) < 0 && errno != ESRCH)
1012 service_set_state(s, state);
1014 if (s->main_pid <= 0 && s->control_pid <= 0)
1015 service_enter_dead(s, true, true);
1020 log_warning("%s failed to kill processes: %s", unit_id(UNIT(s)), strerror(-r));
1024 service_set_state(s, state);
1025 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1026 service_enter_stop_post(s, false);
1028 service_enter_dead(s, false, true);
1031 static void service_enter_stop(Service *s, bool success) {
1038 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP]))
1039 if ((r = service_spawn(s,
1043 !s->permissions_start_only,
1044 !s->root_directory_start_only,
1045 &s->control_pid)) < 0)
1048 service_set_state(s, SERVICE_STOP);
1050 if (!s->control_command)
1051 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1056 log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s)), strerror(-r));
1057 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1060 static void service_enter_start_post(Service *s) {
1064 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST]))
1065 if ((r = service_spawn(s,
1069 !s->permissions_start_only,
1070 !s->root_directory_start_only,
1071 &s->control_pid)) < 0)
1075 service_set_state(s, SERVICE_START_POST);
1077 if (!s->control_command)
1078 service_set_state(s, SERVICE_RUNNING);
1083 log_warning("%s failed to run start-post executable: %s", unit_id(UNIT(s)), strerror(-r));
1084 service_enter_stop(s, false);
1087 static void service_enter_start(Service *s) {
1093 assert(s->exec_command[SERVICE_EXEC_START]);
1094 assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
1096 if ((r = service_spawn(s,
1097 s->exec_command[SERVICE_EXEC_START],
1098 s->type == SERVICE_FORKING,
1105 service_set_state(s, SERVICE_START);
1107 if (s->type == SERVICE_SIMPLE) {
1108 /* For simple services we immediately start
1109 * the START_POST binaries. */
1112 s->main_pid_known = true;
1113 service_enter_start_post(s);
1115 } else if (s->type == SERVICE_FORKING) {
1117 /* For forking services we wait until the start
1118 * process exited. */
1120 s->control_pid = pid;
1121 s->control_command = s->exec_command[SERVICE_EXEC_START];
1122 } else if (s->type == SERVICE_FINISH) {
1124 /* For finishing services we wait until the start
1125 * process exited, too, but it is our main process. */
1128 s->control_command = s->exec_command[SERVICE_EXEC_START];
1130 assert_not_reached("Unknown service type");
1135 log_warning("%s failed to run start exectuable: %s", unit_id(UNIT(s)), strerror(-r));
1136 service_enter_stop(s, false);
1139 static void service_enter_start_pre(Service *s) {
1144 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE]))
1145 if ((r = service_spawn(s,
1149 !s->permissions_start_only,
1150 !s->root_directory_start_only,
1151 &s->control_pid)) < 0)
1154 service_set_state(s, SERVICE_START_PRE);
1156 if (!s->control_command)
1157 service_enter_start(s);
1162 log_warning("%s failed to run start-pre executable: %s", unit_id(UNIT(s)), strerror(-r));
1163 service_enter_dead(s, false, true);
1166 static void service_enter_restart(Service *s) {
1170 if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL)) < 0)
1173 log_debug("%s scheduled restart job.", unit_id(UNIT(s)));
1174 service_enter_dead(s, true, false);
1179 log_warning("%s failed to schedule restart job: %s", unit_id(UNIT(s)), strerror(-r));
1180 service_enter_dead(s, false, false);
1183 static void service_enter_reload(Service *s) {
1188 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD]))
1189 if ((r = service_spawn(s,
1193 !s->permissions_start_only,
1194 !s->root_directory_start_only,
1195 &s->control_pid)) < 0)
1198 service_set_state(s, SERVICE_RELOAD);
1200 if (!s->control_command)
1201 service_set_state(s, SERVICE_RUNNING);
1206 log_warning("%s failed to run reload executable: %s", unit_id(UNIT(s)), strerror(-r));
1207 service_enter_stop(s, false);
1210 static void service_run_next(Service *s, bool success) {
1214 assert(s->control_command);
1215 assert(s->control_command->command_next);
1220 s->control_command = s->control_command->command_next;
1222 if ((r = service_spawn(s,
1226 !s->permissions_start_only,
1227 !s->root_directory_start_only,
1228 &s->control_pid)) < 0)
1234 log_warning("%s failed to run spawn next executable: %s", unit_id(UNIT(s)), strerror(-r));
1236 if (s->state == SERVICE_STOP)
1237 service_enter_stop_post(s, false);
1238 else if (s->state == SERVICE_STOP_POST)
1239 service_enter_dead(s, false, true);
1241 service_enter_stop(s, false);
1244 static int service_start(Unit *u) {
1245 Service *s = SERVICE(u);
1249 /* We cannot fulfill this request right now, try again later
1251 if (s->state == SERVICE_STOP ||
1252 s->state == SERVICE_STOP_SIGTERM ||
1253 s->state == SERVICE_STOP_SIGKILL ||
1254 s->state == SERVICE_STOP_POST ||
1255 s->state == SERVICE_FINAL_SIGTERM ||
1256 s->state == SERVICE_FINAL_SIGKILL)
1259 /* Already on it! */
1260 if (s->state == SERVICE_START_PRE ||
1261 s->state == SERVICE_START ||
1262 s->state == SERVICE_START_POST)
1265 assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTAINANCE || s->state == SERVICE_AUTO_RESTART);
1267 /* Make sure we don't enter a busy loop of some kind. */
1268 if (!ratelimit_test(&s->ratelimit)) {
1269 log_warning("%s start request repeated too quickly, refusing to start.", unit_id(u));
1274 s->main_pid_known = false;
1276 service_enter_start_pre(s);
1280 static int service_stop(Unit *u) {
1281 Service *s = SERVICE(u);
1285 if (s->state == SERVICE_START_PRE ||
1286 s->state == SERVICE_START ||
1287 s->state == SERVICE_START_POST ||
1288 s->state == SERVICE_RELOAD)
1291 if (s->state == SERVICE_AUTO_RESTART) {
1292 service_set_state(s, SERVICE_DEAD);
1296 assert(s->state == SERVICE_RUNNING);
1298 service_enter_stop(s, true);
1302 static int service_reload(Unit *u) {
1303 Service *s = SERVICE(u);
1307 assert(s->state == SERVICE_RUNNING);
1309 service_enter_reload(s);
1313 static bool service_can_reload(Unit *u) {
1314 Service *s = SERVICE(u);
1318 return !!s->exec_command[SERVICE_EXEC_RELOAD];
1321 static UnitActiveState service_active_state(Unit *u) {
1324 return state_translation_table[SERVICE(u)->state];
1327 static int main_pid_good(Service *s) {
1330 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1333 /* If we know the pid file, then lets just check if it is
1335 if (s->main_pid_known)
1336 return s->main_pid > 0;
1338 /* We don't know the pid */
1342 static bool control_pid_good(Service *s) {
1345 return s->control_pid > 0;
1348 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
1349 Service *s = SERVICE(u);
1355 success = code == CLD_EXITED && status == 0;
1356 s->failure = s->failure || !success;
1358 if (s->main_pid == pid) {
1360 exec_status_fill(&s->main_exec_status, pid, code, status);
1363 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_FINISH) {
1364 assert(s->exec_command[SERVICE_EXEC_START]);
1365 s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
1368 log_debug("%s: main process exited, code=%s status=%i", unit_id(u), sigchld_code_to_string(code), status);
1370 /* The service exited, so the service is officially
1375 case SERVICE_START_POST:
1376 case SERVICE_RELOAD:
1378 /* Need to wait until the operation is
1383 assert(s->type == SERVICE_FINISH);
1385 /* This was our main goal, so let's go on */
1387 service_enter_start_post(s);
1389 service_enter_stop(s, false);
1392 case SERVICE_RUNNING:
1393 service_enter_stop(s, success);
1396 case SERVICE_STOP_SIGTERM:
1397 case SERVICE_STOP_SIGKILL:
1399 if (!control_pid_good(s))
1400 service_enter_stop_post(s, success);
1402 /* If there is still a control process, wait for that first */
1406 assert_not_reached("Uh, main process died at wrong time.");
1409 } else if (s->control_pid == pid) {
1410 assert(s->control_command);
1412 exec_status_fill(&s->control_command->exec_status, pid, code, status);
1415 log_debug("%s: control process exited, code=%s status=%i", unit_id(u), sigchld_code_to_string(code), status);
1417 /* If we are shutting things down anyway we
1418 * don't care about failing commands. */
1420 if (s->control_command->command_next &&
1421 (success || (s->state == SERVICE_EXEC_STOP || s->state == SERVICE_EXEC_STOP_POST)))
1423 /* There is another command to *
1424 * execute, so let's do that. */
1426 service_run_next(s, success);
1429 /* No further commands for this step, so let's
1430 * figure out what to do next */
1432 log_debug("%s got final SIGCHLD for state %s", unit_id(u), service_state_to_string(s->state));
1436 case SERVICE_START_PRE:
1438 service_enter_start(s);
1440 service_enter_stop(s, false);
1444 assert(s->type == SERVICE_FORKING);
1446 /* Let's try to load the pid
1447 * file here if we can. We
1448 * ignore the return value,
1449 * since the PID file might
1450 * actually be created by a
1451 * START_POST script */
1455 service_load_pid_file(s);
1457 service_enter_start_post(s);
1459 service_enter_stop(s, false);
1463 case SERVICE_START_POST:
1464 if (success && s->pid_file && !s->main_pid_known) {
1467 /* Hmm, let's see if we can
1468 * load the pid now after the
1469 * start-post scripts got
1472 if ((r = service_load_pid_file(s)) < 0)
1473 log_warning("%s: failed to load PID file %s: %s", unit_id(UNIT(s)), s->pid_file, strerror(-r));
1478 case SERVICE_RELOAD:
1480 if (main_pid_good(s) != 0)
1481 service_set_state(s, SERVICE_RUNNING);
1483 service_enter_stop(s, true);
1485 service_enter_stop(s, false);
1490 if (main_pid_good(s) > 0)
1491 /* Still not dead and we know the PID? Let's go hunting. */
1492 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
1494 service_enter_stop_post(s, success);
1497 case SERVICE_STOP_SIGTERM:
1498 case SERVICE_STOP_SIGKILL:
1499 if (main_pid_good(s) <= 0)
1500 service_enter_stop_post(s, success);
1502 /* If there is still a service
1503 * process around, wait until
1504 * that one quit, too */
1507 case SERVICE_STOP_POST:
1508 case SERVICE_FINAL_SIGTERM:
1509 case SERVICE_FINAL_SIGKILL:
1510 service_enter_dead(s, success, true);
1514 assert_not_reached("Uh, control process died at wrong time.");
1518 assert_not_reached("Got SIGCHLD for unkown PID");
1521 static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
1522 Service *s = SERVICE(u);
1525 assert(elapsed == 1);
1527 assert(w == &s->timer_watch);
1531 case SERVICE_START_PRE:
1533 case SERVICE_START_POST:
1534 case SERVICE_RELOAD:
1535 log_warning("%s operation timed out. Stopping.", unit_id(u));
1536 service_enter_stop(s, false);
1540 log_warning("%s stopping timed out. Terminating.", unit_id(u));
1541 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1544 case SERVICE_STOP_SIGTERM:
1545 log_warning("%s stopping timed out. Killing.", unit_id(u));
1546 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
1549 case SERVICE_STOP_SIGKILL:
1550 /* Uh, wie sent a SIGKILL and it is still not gone?
1551 * Must be something we cannot kill, so let's just be
1552 * weirded out and continue */
1554 log_warning("%s still around after SIGKILL. Ignoring.", unit_id(u));
1555 service_enter_stop_post(s, false);
1558 case SERVICE_STOP_POST:
1559 log_warning("%s stopping timed out (2). Terminating.", unit_id(u));
1560 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1563 case SERVICE_FINAL_SIGTERM:
1564 log_warning("%s stopping timed out (2). Killing.", unit_id(u));
1565 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
1568 case SERVICE_FINAL_SIGKILL:
1569 log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", unit_id(u));
1570 service_enter_dead(s, false, true);
1573 case SERVICE_AUTO_RESTART:
1574 log_debug("%s holdoff time over, scheduling restart.", unit_id(u));
1575 service_enter_restart(s);
1579 assert_not_reached("Timeout at wrong time.");
1583 static int service_enumerate(Manager *m) {
1585 static const char * const rcnd[] = {
1586 "../rc0.d", SPECIAL_RUNLEVEL0_TARGET,
1587 "../rc1.d", SPECIAL_RUNLEVEL1_TARGET,
1588 "../rc2.d", SPECIAL_RUNLEVEL2_TARGET,
1589 "../rc3.d", SPECIAL_RUNLEVEL3_TARGET,
1590 "../rc4.d", SPECIAL_RUNLEVEL4_TARGET,
1591 "../rc5.d", SPECIAL_RUNLEVEL5_TARGET,
1592 "../rc6.d", SPECIAL_RUNLEVEL6_TARGET
1598 char *path = NULL, *fpath = NULL, *name = NULL;
1603 STRV_FOREACH(p, m->sysvinit_path)
1604 for (i = 0; i < ELEMENTSOF(rcnd); i += 2) {
1609 if (asprintf(&path, "%s/%s", *p, rcnd[i]) < 0) {
1617 if (!(d = opendir(path))) {
1618 if (errno != ENOENT)
1619 log_warning("opendir() failed on %s: %s", path, strerror(errno));
1624 while ((de = readdir(d))) {
1625 Unit *runlevel, *service;
1627 if (ignore_file(de->d_name))
1630 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
1633 if (strlen(de->d_name) < 4)
1638 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd[i], de->d_name) < 0) {
1643 if (access(fpath, X_OK) < 0) {
1645 if (errno != ENOENT)
1646 log_warning("access() failed on %s: %s", fpath, strerror(errno));
1653 if (asprintf(&name, "%s.service", de->d_name+3) < 0) {
1658 if ((r = manager_load_unit(m, name, &service)) < 0)
1661 if ((r = manager_load_unit(m, rcnd[i+1], &runlevel)) < 0)
1664 if (de->d_name[0] == 'S') {
1665 if ((r = unit_add_dependency(runlevel, UNIT_WANTS, service)) < 0)
1668 if ((r = unit_add_dependency(runlevel, UNIT_AFTER, service)) < 0)
1671 if ((r = unit_add_dependency(runlevel, UNIT_CONFLICTS, service)) < 0)
1674 if ((r = unit_add_dependency(runlevel, UNIT_BEFORE, service)) < 0)
1691 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
1692 [SERVICE_DEAD] = "dead",
1693 [SERVICE_START_PRE] = "start-pre",
1694 [SERVICE_START] = "start",
1695 [SERVICE_START_POST] = "start-post",
1696 [SERVICE_RUNNING] = "running",
1697 [SERVICE_RELOAD] = "reload",
1698 [SERVICE_STOP] = "stop",
1699 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
1700 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
1701 [SERVICE_STOP_POST] = "stop-post",
1702 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
1703 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
1704 [SERVICE_MAINTAINANCE] = "maintainance",
1705 [SERVICE_AUTO_RESTART] = "auto-restart",
1708 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
1710 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
1711 [SERVICE_ONCE] = "once",
1712 [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
1713 [SERVICE_RESTART_ALWAYS] = "restart-on-failure",
1716 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
1718 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
1719 [SERVICE_FORKING] = "forking",
1720 [SERVICE_SIMPLE] = "simple",
1721 [SERVICE_FINISH] = "finish"
1724 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
1726 static const char* const service_exec_command_table[_SERVICE_EXEC_MAX] = {
1727 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
1728 [SERVICE_EXEC_START] = "ExecStart",
1729 [SERVICE_EXEC_START_POST] = "ExecStartPost",
1730 [SERVICE_EXEC_RELOAD] = "ExecReload",
1731 [SERVICE_EXEC_STOP] = "ExecStop",
1732 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
1735 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
1737 const UnitVTable service_vtable = {
1738 .suffix = ".service",
1740 .init = service_init,
1741 .done = service_done,
1743 .dump = service_dump,
1745 .start = service_start,
1746 .stop = service_stop,
1747 .reload = service_reload,
1749 .can_reload = service_can_reload,
1751 .active_state = service_active_state,
1753 .sigchld_event = service_sigchld_event,
1754 .timer_event = service_timer_event,
1756 .enumerate = service_enumerate