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) {
584 /* Add default cgroup */
585 if ((r = unit_add_default_cgroup(u)) < 0) {
593 static void service_dump(Unit *u, FILE *f, const char *prefix) {
595 ServiceExecCommand c;
596 Service *s = SERVICE(u);
602 p2 = strappend(prefix, "\t");
603 prefix2 = p2 ? p2 : prefix;
606 "%sService State: %s\n"
607 "%sPermissionsStartOnly: %s\n"
608 "%sRootDirectoryStartOnly: %s\n"
609 "%sValidNoProcess: %s\n",
610 prefix, service_state_to_string(s->state),
611 prefix, yes_no(s->permissions_start_only),
612 prefix, yes_no(s->root_directory_start_only),
613 prefix, yes_no(s->valid_no_process));
618 prefix, s->pid_file);
621 exec_context_dump(&s->exec_context, f, prefix);
623 for (c = 0; c < _SERVICE_EXEC_MAX; c++) {
625 if (!s->exec_command[c])
628 fprintf(f, "%s→ %s:\n",
629 prefix, service_exec_command_to_string(c));
631 exec_command_dump_list(s->exec_command[c], f, prefix2);
636 "%sSysV Init Script Path: %s\n",
637 prefix, s->sysv_path);
639 if (s->sysv_start_priority >= 0)
641 "%sSysV Start Priority: %i\n",
642 prefix, s->sysv_start_priority);
647 static int service_load_pid_file(Service *s) {
654 if (s->main_pid_known)
660 if ((r = read_one_line_file(s->pid_file, &k)) < 0)
663 if ((r = safe_atolu(k, &p)) < 0) {
668 if ((unsigned long) (pid_t) p != p)
672 s->main_pid_known = true;
677 static int service_get_sockets(Service *s, Set **_set) {
686 /* Collects all Socket objects that belong to this
687 * service. Note that a service might have multiple sockets
688 * via multiple names. */
690 if (!(set = set_new(NULL, NULL)))
693 SET_FOREACH(t, UNIT(s)->meta.names, i) {
697 /* Look for all socket objects that go by any of our
698 * units and collect their fds */
700 if (!(k = unit_name_change_suffix(t, ".socket"))) {
705 p = manager_get_unit(UNIT(s)->meta.manager, k);
710 if ((r = set_put(set, p)) < 0)
723 static int service_notify_sockets(Service *s) {
731 /* Notifies all our sockets when we die */
733 if ((r = service_get_sockets(s, &set)) < 0)
736 SET_FOREACH(sock, set, i)
737 socket_notify_service_dead(sock);
744 static void service_set_state(Service *s, ServiceState state) {
745 ServiceState old_state;
748 old_state = s->state;
751 if (state != SERVICE_START_PRE &&
752 state != SERVICE_START &&
753 state != SERVICE_START_POST &&
754 state != SERVICE_RELOAD &&
755 state != SERVICE_STOP &&
756 state != SERVICE_STOP_SIGTERM &&
757 state != SERVICE_STOP_SIGKILL &&
758 state != SERVICE_STOP_POST &&
759 state != SERVICE_FINAL_SIGTERM &&
760 state != SERVICE_FINAL_SIGKILL &&
761 state != SERVICE_AUTO_RESTART)
762 unit_unwatch_timer(UNIT(s), &s->timer_watch);
764 if (state != SERVICE_START &&
765 state != SERVICE_START_POST &&
766 state != SERVICE_RUNNING &&
767 state != SERVICE_RELOAD &&
768 state != SERVICE_STOP &&
769 state != SERVICE_STOP_SIGTERM &&
770 state != SERVICE_STOP_SIGKILL)
771 if (s->main_pid > 0) {
772 unit_unwatch_pid(UNIT(s), s->main_pid);
776 if (state != SERVICE_START_PRE &&
777 state != SERVICE_START &&
778 state != SERVICE_START_POST &&
779 state != SERVICE_RELOAD &&
780 state != SERVICE_STOP &&
781 state != SERVICE_STOP_SIGTERM &&
782 state != SERVICE_STOP_SIGKILL &&
783 state != SERVICE_STOP_POST &&
784 state != SERVICE_FINAL_SIGTERM &&
785 state != SERVICE_FINAL_SIGKILL)
786 if (s->control_pid > 0) {
787 unit_unwatch_pid(UNIT(s), s->control_pid);
791 if (state != SERVICE_START_PRE &&
792 state != SERVICE_START &&
793 state != SERVICE_START_POST &&
794 state != SERVICE_RELOAD &&
795 state != SERVICE_STOP &&
796 state != SERVICE_STOP_POST)
797 s->control_command = NULL;
799 if (state == SERVICE_DEAD ||
800 state == SERVICE_STOP ||
801 state == SERVICE_STOP_SIGTERM ||
802 state == SERVICE_STOP_SIGKILL ||
803 state == SERVICE_STOP_POST ||
804 state == SERVICE_FINAL_SIGTERM ||
805 state == SERVICE_FINAL_SIGKILL ||
806 state == SERVICE_MAINTAINANCE ||
807 state == SERVICE_AUTO_RESTART)
808 service_notify_sockets(s);
810 log_debug("%s changed %s → %s", unit_id(UNIT(s)), service_state_to_string(old_state), service_state_to_string(state));
812 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
815 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
827 if ((r = service_get_sockets(s, &set)) < 0)
830 SET_FOREACH(sock, set, i) {
834 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
846 if (!(t = new(int, rn_fds+cn_fds))) {
852 memcpy(t, rfds, rn_fds);
853 memcpy(t+rn_fds, cfds, cn_fds);
858 rn_fds = rn_fds+cn_fds;
876 static int service_spawn(
881 bool apply_permissions,
895 if ((r = service_collect_fds(s, &fds, &n_fds)) < 0)
899 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
902 unit_unwatch_timer(UNIT(s), &s->timer_watch);
904 if ((r = exec_spawn(c,
909 UNIT(s)->meta.cgroup_bondings,
913 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
914 /* FIXME: we need to do something here */
926 unit_unwatch_timer(UNIT(s), &s->timer_watch);
931 static void service_enter_dead(Service *s, bool success, bool allow_restart) {
939 (s->restart == SERVICE_RESTART_ALWAYS ||
940 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
942 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
945 service_set_state(s, SERVICE_AUTO_RESTART);
947 service_set_state(s, s->failure ? SERVICE_MAINTAINANCE : SERVICE_DEAD);
952 log_warning("%s failed to run install restart timer: %s", unit_id(UNIT(s)), strerror(-r));
953 service_enter_dead(s, false, false);
956 static void service_enter_signal(Service *s, ServiceState state, bool success);
958 static void service_enter_stop_post(Service *s, bool success) {
965 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST]))
966 if ((r = service_spawn(s,
970 !s->permissions_start_only,
971 !s->root_directory_start_only,
972 &s->control_pid)) < 0)
976 service_set_state(s, SERVICE_STOP_POST);
978 if (!s->control_command)
979 service_enter_dead(s, true, true);
984 log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s)), strerror(-r));
985 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
988 static void service_enter_signal(Service *s, ServiceState state, bool success) {
997 if (s->main_pid > 0 || s->control_pid > 0) {
1000 sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
1003 if (s->main_pid > 0) {
1004 if (kill(s->main_pid, sig) < 0 && errno != ESRCH)
1010 if (s->control_pid > 0) {
1011 if (kill(s->control_pid, sig) < 0 && errno != ESRCH)
1021 service_set_state(s, state);
1023 if (s->main_pid <= 0 && s->control_pid <= 0)
1024 service_enter_dead(s, true, true);
1029 log_warning("%s failed to kill processes: %s", unit_id(UNIT(s)), strerror(-r));
1033 service_set_state(s, state);
1034 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1035 service_enter_stop_post(s, false);
1037 service_enter_dead(s, false, true);
1040 static void service_enter_stop(Service *s, bool success) {
1047 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP]))
1048 if ((r = service_spawn(s,
1052 !s->permissions_start_only,
1053 !s->root_directory_start_only,
1054 &s->control_pid)) < 0)
1057 service_set_state(s, SERVICE_STOP);
1059 if (!s->control_command)
1060 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1065 log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s)), strerror(-r));
1066 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1069 static void service_enter_start_post(Service *s) {
1073 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST]))
1074 if ((r = service_spawn(s,
1078 !s->permissions_start_only,
1079 !s->root_directory_start_only,
1080 &s->control_pid)) < 0)
1084 service_set_state(s, SERVICE_START_POST);
1086 if (!s->control_command)
1087 service_set_state(s, SERVICE_RUNNING);
1092 log_warning("%s failed to run start-post executable: %s", unit_id(UNIT(s)), strerror(-r));
1093 service_enter_stop(s, false);
1096 static void service_enter_start(Service *s) {
1102 assert(s->exec_command[SERVICE_EXEC_START]);
1103 assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
1105 if ((r = service_spawn(s,
1106 s->exec_command[SERVICE_EXEC_START],
1107 s->type == SERVICE_FORKING,
1114 service_set_state(s, SERVICE_START);
1116 if (s->type == SERVICE_SIMPLE) {
1117 /* For simple services we immediately start
1118 * the START_POST binaries. */
1121 s->main_pid_known = true;
1122 service_enter_start_post(s);
1124 } else if (s->type == SERVICE_FORKING) {
1126 /* For forking services we wait until the start
1127 * process exited. */
1129 s->control_pid = pid;
1130 s->control_command = s->exec_command[SERVICE_EXEC_START];
1131 } else if (s->type == SERVICE_FINISH) {
1133 /* For finishing services we wait until the start
1134 * process exited, too, but it is our main process. */
1137 s->control_command = s->exec_command[SERVICE_EXEC_START];
1139 assert_not_reached("Unknown service type");
1144 log_warning("%s failed to run start exectuable: %s", unit_id(UNIT(s)), strerror(-r));
1145 service_enter_stop(s, false);
1148 static void service_enter_start_pre(Service *s) {
1153 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE]))
1154 if ((r = service_spawn(s,
1158 !s->permissions_start_only,
1159 !s->root_directory_start_only,
1160 &s->control_pid)) < 0)
1163 service_set_state(s, SERVICE_START_PRE);
1165 if (!s->control_command)
1166 service_enter_start(s);
1171 log_warning("%s failed to run start-pre executable: %s", unit_id(UNIT(s)), strerror(-r));
1172 service_enter_dead(s, false, true);
1175 static void service_enter_restart(Service *s) {
1179 if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL)) < 0)
1182 log_debug("%s scheduled restart job.", unit_id(UNIT(s)));
1183 service_enter_dead(s, true, false);
1188 log_warning("%s failed to schedule restart job: %s", unit_id(UNIT(s)), strerror(-r));
1189 service_enter_dead(s, false, false);
1192 static void service_enter_reload(Service *s) {
1197 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD]))
1198 if ((r = service_spawn(s,
1202 !s->permissions_start_only,
1203 !s->root_directory_start_only,
1204 &s->control_pid)) < 0)
1207 service_set_state(s, SERVICE_RELOAD);
1209 if (!s->control_command)
1210 service_set_state(s, SERVICE_RUNNING);
1215 log_warning("%s failed to run reload executable: %s", unit_id(UNIT(s)), strerror(-r));
1216 service_enter_stop(s, false);
1219 static void service_run_next(Service *s, bool success) {
1223 assert(s->control_command);
1224 assert(s->control_command->command_next);
1229 s->control_command = s->control_command->command_next;
1231 if ((r = service_spawn(s,
1235 !s->permissions_start_only,
1236 !s->root_directory_start_only,
1237 &s->control_pid)) < 0)
1243 log_warning("%s failed to run spawn next executable: %s", unit_id(UNIT(s)), strerror(-r));
1245 if (s->state == SERVICE_STOP)
1246 service_enter_stop_post(s, false);
1247 else if (s->state == SERVICE_STOP_POST)
1248 service_enter_dead(s, false, true);
1250 service_enter_stop(s, false);
1253 static int service_start(Unit *u) {
1254 Service *s = SERVICE(u);
1258 /* We cannot fulfill this request right now, try again later
1260 if (s->state == SERVICE_STOP ||
1261 s->state == SERVICE_STOP_SIGTERM ||
1262 s->state == SERVICE_STOP_SIGKILL ||
1263 s->state == SERVICE_STOP_POST ||
1264 s->state == SERVICE_FINAL_SIGTERM ||
1265 s->state == SERVICE_FINAL_SIGKILL)
1268 /* Already on it! */
1269 if (s->state == SERVICE_START_PRE ||
1270 s->state == SERVICE_START ||
1271 s->state == SERVICE_START_POST)
1274 assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTAINANCE || s->state == SERVICE_AUTO_RESTART);
1276 /* Make sure we don't enter a busy loop of some kind. */
1277 if (!ratelimit_test(&s->ratelimit)) {
1278 log_warning("%s start request repeated too quickly, refusing to start.", unit_id(u));
1283 s->main_pid_known = false;
1285 service_enter_start_pre(s);
1289 static int service_stop(Unit *u) {
1290 Service *s = SERVICE(u);
1294 if (s->state == SERVICE_START_PRE ||
1295 s->state == SERVICE_START ||
1296 s->state == SERVICE_START_POST ||
1297 s->state == SERVICE_RELOAD)
1300 if (s->state == SERVICE_AUTO_RESTART) {
1301 service_set_state(s, SERVICE_DEAD);
1305 assert(s->state == SERVICE_RUNNING);
1307 service_enter_stop(s, true);
1311 static int service_reload(Unit *u) {
1312 Service *s = SERVICE(u);
1316 assert(s->state == SERVICE_RUNNING);
1318 service_enter_reload(s);
1322 static bool service_can_reload(Unit *u) {
1323 Service *s = SERVICE(u);
1327 return !!s->exec_command[SERVICE_EXEC_RELOAD];
1330 static UnitActiveState service_active_state(Unit *u) {
1333 return state_translation_table[SERVICE(u)->state];
1336 static int main_pid_good(Service *s) {
1339 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1342 /* If we know the pid file, then lets just check if it is
1344 if (s->main_pid_known)
1345 return s->main_pid > 0;
1347 /* We don't know the pid */
1351 static bool control_pid_good(Service *s) {
1354 return s->control_pid > 0;
1357 static int cgroup_good(Service *s) {
1360 if (s->valid_no_process)
1363 return cgroup_bonding_is_empty_list(UNIT(s)->meta.cgroup_bondings);
1366 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
1367 Service *s = SERVICE(u);
1373 success = code == CLD_EXITED && status == 0;
1374 s->failure = s->failure || !success;
1376 if (s->main_pid == pid) {
1378 exec_status_fill(&s->main_exec_status, pid, code, status);
1381 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_FINISH) {
1382 assert(s->exec_command[SERVICE_EXEC_START]);
1383 s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
1386 log_debug("%s: main process exited, code=%s status=%i", unit_id(u), sigchld_code_to_string(code), status);
1388 /* The service exited, so the service is officially
1393 case SERVICE_START_POST:
1394 case SERVICE_RELOAD:
1396 /* Need to wait until the operation is
1401 assert(s->type == SERVICE_FINISH);
1403 /* This was our main goal, so let's go on */
1405 service_enter_start_post(s);
1407 service_enter_stop(s, false);
1410 case SERVICE_RUNNING:
1411 service_enter_stop(s, success);
1414 case SERVICE_STOP_SIGTERM:
1415 case SERVICE_STOP_SIGKILL:
1417 if (!control_pid_good(s))
1418 service_enter_stop_post(s, success);
1420 /* If there is still a control process, wait for that first */
1424 assert_not_reached("Uh, main process died at wrong time.");
1427 } else if (s->control_pid == pid) {
1428 assert(s->control_command);
1430 exec_status_fill(&s->control_command->exec_status, pid, code, status);
1433 log_debug("%s: control process exited, code=%s status=%i", unit_id(u), sigchld_code_to_string(code), status);
1435 /* If we are shutting things down anyway we
1436 * don't care about failing commands. */
1438 if (s->control_command->command_next &&
1439 (success || (s->state == SERVICE_STOP || s->state == SERVICE_STOP_POST)))
1441 /* There is another command to *
1442 * execute, so let's do that. */
1444 service_run_next(s, success);
1447 /* No further commands for this step, so let's
1448 * figure out what to do next */
1450 log_debug("%s got final SIGCHLD for state %s", unit_id(u), service_state_to_string(s->state));
1454 case SERVICE_START_PRE:
1456 service_enter_start(s);
1458 service_enter_stop(s, false);
1462 assert(s->type == SERVICE_FORKING);
1464 /* Let's try to load the pid
1465 * file here if we can. We
1466 * ignore the return value,
1467 * since the PID file might
1468 * actually be created by a
1469 * START_POST script */
1473 service_load_pid_file(s);
1475 service_enter_start_post(s);
1477 service_enter_stop(s, false);
1481 case SERVICE_START_POST:
1482 if (success && s->pid_file && !s->main_pid_known) {
1485 /* Hmm, let's see if we can
1486 * load the pid now after the
1487 * start-post scripts got
1490 if ((r = service_load_pid_file(s)) < 0)
1491 log_warning("%s: failed to load PID file %s: %s", unit_id(UNIT(s)), s->pid_file, strerror(-r));
1496 case SERVICE_RELOAD:
1498 if (main_pid_good(s) != 0 && cgroup_good(s) != 0)
1499 service_set_state(s, SERVICE_RUNNING);
1501 service_enter_stop(s, true);
1503 service_enter_stop(s, false);
1508 if (main_pid_good(s) > 0)
1509 /* Still not dead and we know the PID? Let's go hunting. */
1510 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
1512 service_enter_stop_post(s, success);
1515 case SERVICE_STOP_SIGTERM:
1516 case SERVICE_STOP_SIGKILL:
1517 if (main_pid_good(s) <= 0)
1518 service_enter_stop_post(s, success);
1520 /* If there is still a service
1521 * process around, wait until
1522 * that one quit, too */
1525 case SERVICE_STOP_POST:
1526 case SERVICE_FINAL_SIGTERM:
1527 case SERVICE_FINAL_SIGKILL:
1528 service_enter_dead(s, success, true);
1532 assert_not_reached("Uh, control process died at wrong time.");
1536 assert_not_reached("Got SIGCHLD for unkown PID");
1539 static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
1540 Service *s = SERVICE(u);
1543 assert(elapsed == 1);
1545 assert(w == &s->timer_watch);
1549 case SERVICE_START_PRE:
1551 case SERVICE_START_POST:
1552 case SERVICE_RELOAD:
1553 log_warning("%s operation timed out. Stopping.", unit_id(u));
1554 service_enter_stop(s, false);
1558 log_warning("%s stopping timed out. Terminating.", unit_id(u));
1559 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1562 case SERVICE_STOP_SIGTERM:
1563 log_warning("%s stopping timed out. Killing.", unit_id(u));
1564 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
1567 case SERVICE_STOP_SIGKILL:
1568 /* Uh, wie sent a SIGKILL and it is still not gone?
1569 * Must be something we cannot kill, so let's just be
1570 * weirded out and continue */
1572 log_warning("%s still around after SIGKILL. Ignoring.", unit_id(u));
1573 service_enter_stop_post(s, false);
1576 case SERVICE_STOP_POST:
1577 log_warning("%s stopping timed out (2). Terminating.", unit_id(u));
1578 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1581 case SERVICE_FINAL_SIGTERM:
1582 log_warning("%s stopping timed out (2). Killing.", unit_id(u));
1583 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
1586 case SERVICE_FINAL_SIGKILL:
1587 log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", unit_id(u));
1588 service_enter_dead(s, false, true);
1591 case SERVICE_AUTO_RESTART:
1592 log_debug("%s holdoff time over, scheduling restart.", unit_id(u));
1593 service_enter_restart(s);
1597 assert_not_reached("Timeout at wrong time.");
1601 static void service_cgroup_notify_event(Unit *u) {
1602 Service *s = SERVICE(u);
1606 log_debug("%s: cgroup is empty", unit_id(u));
1610 /* Waiting for SIGCHLD is usually more interesting,
1611 * because it includes return codes/signals. Which is
1612 * why we ignore the cgroup events for most cases,
1613 * except when we don't know pid which to expect the
1616 case SERVICE_RUNNING:
1618 if (!s->valid_no_process && main_pid_good(s) <= 0)
1619 service_enter_stop(s, true);
1628 static int service_enumerate(Manager *m) {
1630 static const char * const rcnd[] = {
1631 "../rc0.d", SPECIAL_RUNLEVEL0_TARGET,
1632 "../rc1.d", SPECIAL_RUNLEVEL1_TARGET,
1633 "../rc2.d", SPECIAL_RUNLEVEL2_TARGET,
1634 "../rc3.d", SPECIAL_RUNLEVEL3_TARGET,
1635 "../rc4.d", SPECIAL_RUNLEVEL4_TARGET,
1636 "../rc5.d", SPECIAL_RUNLEVEL5_TARGET,
1637 "../rc6.d", SPECIAL_RUNLEVEL6_TARGET
1643 char *path = NULL, *fpath = NULL, *name = NULL;
1648 STRV_FOREACH(p, m->sysvinit_path)
1649 for (i = 0; i < ELEMENTSOF(rcnd); i += 2) {
1654 if (asprintf(&path, "%s/%s", *p, rcnd[i]) < 0) {
1662 if (!(d = opendir(path))) {
1663 if (errno != ENOENT)
1664 log_warning("opendir() failed on %s: %s", path, strerror(errno));
1669 while ((de = readdir(d))) {
1670 Unit *runlevel, *service;
1672 if (ignore_file(de->d_name))
1675 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
1678 if (strlen(de->d_name) < 4)
1683 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd[i], de->d_name) < 0) {
1688 if (access(fpath, X_OK) < 0) {
1690 if (errno != ENOENT)
1691 log_warning("access() failed on %s: %s", fpath, strerror(errno));
1698 if (asprintf(&name, "%s.service", de->d_name+3) < 0) {
1703 if ((r = manager_load_unit(m, name, &service)) < 0)
1706 if ((r = manager_load_unit(m, rcnd[i+1], &runlevel)) < 0)
1709 if (de->d_name[0] == 'S') {
1710 if ((r = unit_add_dependency(runlevel, UNIT_WANTS, service)) < 0)
1713 if ((r = unit_add_dependency(runlevel, UNIT_AFTER, service)) < 0)
1716 if ((r = unit_add_dependency(runlevel, UNIT_CONFLICTS, service)) < 0)
1719 if ((r = unit_add_dependency(runlevel, UNIT_BEFORE, service)) < 0)
1736 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
1737 [SERVICE_DEAD] = "dead",
1738 [SERVICE_START_PRE] = "start-pre",
1739 [SERVICE_START] = "start",
1740 [SERVICE_START_POST] = "start-post",
1741 [SERVICE_RUNNING] = "running",
1742 [SERVICE_RELOAD] = "reload",
1743 [SERVICE_STOP] = "stop",
1744 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
1745 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
1746 [SERVICE_STOP_POST] = "stop-post",
1747 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
1748 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
1749 [SERVICE_MAINTAINANCE] = "maintainance",
1750 [SERVICE_AUTO_RESTART] = "auto-restart",
1753 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
1755 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
1756 [SERVICE_ONCE] = "once",
1757 [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
1758 [SERVICE_RESTART_ALWAYS] = "restart-on-failure",
1761 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
1763 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
1764 [SERVICE_FORKING] = "forking",
1765 [SERVICE_SIMPLE] = "simple",
1766 [SERVICE_FINISH] = "finish"
1769 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
1771 static const char* const service_exec_command_table[_SERVICE_EXEC_MAX] = {
1772 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
1773 [SERVICE_EXEC_START] = "ExecStart",
1774 [SERVICE_EXEC_START_POST] = "ExecStartPost",
1775 [SERVICE_EXEC_RELOAD] = "ExecReload",
1776 [SERVICE_EXEC_STOP] = "ExecStop",
1777 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
1780 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
1782 const UnitVTable service_vtable = {
1783 .suffix = ".service",
1785 .init = service_init,
1786 .done = service_done,
1788 .dump = service_dump,
1790 .start = service_start,
1791 .stop = service_stop,
1792 .reload = service_reload,
1794 .can_reload = service_can_reload,
1796 .active_state = service_active_state,
1798 .sigchld_event = service_sigchld_event,
1799 .timer_event = service_timer_event,
1801 .cgroup_notify_empty = service_cgroup_notify_event,
1803 .enumerate = service_enumerate