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"
37 #define COMMENTS "#;\n"
38 #define NEWLINES "\n\r"
41 typedef enum RunlevelType {
50 const RunlevelType type;
52 /* Standard SysV runlevels */
53 { "rc0.d", SPECIAL_POWEROFF_TARGET, RUNLEVEL_DOWN },
54 { "rc1.d", SPECIAL_RESCUE_TARGET, RUNLEVEL_UP },
55 { "rc2.d", SPECIAL_RUNLEVEL2_TARGET, RUNLEVEL_UP },
56 { "rc3.d", SPECIAL_RUNLEVEL3_TARGET, RUNLEVEL_UP },
57 { "rc4.d", SPECIAL_RUNLEVEL4_TARGET, RUNLEVEL_UP },
58 { "rc5.d", SPECIAL_RUNLEVEL5_TARGET, RUNLEVEL_UP },
59 { "rc6.d", SPECIAL_REBOOT_TARGET, RUNLEVEL_DOWN },
61 /* SUSE style boot.d */
62 { "boot.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
64 /* Debian style rcS.d */
65 { "rcS.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
68 #define RUNLEVELS_UP "12345"
69 /* #define RUNLEVELS_DOWN "06" */
70 /* #define RUNLEVELS_BOOT "bBsS" */
72 static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
73 [SERVICE_DEAD] = UNIT_INACTIVE,
74 [SERVICE_START_PRE] = UNIT_ACTIVATING,
75 [SERVICE_START] = UNIT_ACTIVATING,
76 [SERVICE_START_POST] = UNIT_ACTIVATING,
77 [SERVICE_RUNNING] = UNIT_ACTIVE,
78 [SERVICE_EXITED] = UNIT_ACTIVE,
79 [SERVICE_RELOAD] = UNIT_ACTIVE_RELOADING,
80 [SERVICE_STOP] = UNIT_DEACTIVATING,
81 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
82 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
83 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
84 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
85 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
86 [SERVICE_MAINTENANCE] = UNIT_INACTIVE,
87 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING,
90 static void service_init(Unit *u) {
91 Service *s = SERVICE(u);
94 assert(u->meta.load_state == UNIT_STUB);
96 s->timeout_usec = DEFAULT_TIMEOUT_USEC;
97 s->restart_usec = DEFAULT_RESTART_USEC;
98 s->timer_watch.type = WATCH_INVALID;
99 s->sysv_start_priority = -1;
102 exec_context_init(&s->exec_context);
104 RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
106 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
109 static void service_unwatch_control_pid(Service *s) {
112 if (s->control_pid <= 0)
115 unit_unwatch_pid(UNIT(s), s->control_pid);
119 static void service_unwatch_main_pid(Service *s) {
122 if (s->main_pid <= 0)
125 unit_unwatch_pid(UNIT(s), s->main_pid);
129 static int service_set_main_pid(Service *s, pid_t pid) {
140 if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid())
141 log_warning("%s: Supervising process %lu which is not our child. We'll most likely not notice when it exits.",
142 s->meta.id, (unsigned long) pid);
145 s->main_pid_known = true;
150 static void service_close_socket_fd(Service *s) {
153 if (s->socket_fd < 0)
156 close_nointr_nofail(s->socket_fd);
160 static void service_done(Unit *u) {
161 Service *s = SERVICE(u);
171 free(s->sysv_runlevels);
172 s->sysv_runlevels = NULL;
174 free(s->status_text);
175 s->status_text = NULL;
177 exec_context_done(&s->exec_context);
178 exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
179 s->control_command = NULL;
181 /* This will leak a process, but at least no memory or any of
183 service_unwatch_main_pid(s);
184 service_unwatch_control_pid(s);
187 unit_unwatch_bus_name(UNIT(u), s->bus_name);
192 service_close_socket_fd(s);
194 unit_unwatch_timer(u, &s->timer_watch);
197 static char *sysv_translate_name(const char *name) {
200 if (!(r = new(char, strlen(name) + sizeof(".service"))))
203 if (startswith(name, "boot."))
204 /* Drop SuSE-style boot. prefix */
205 strcpy(stpcpy(r, name + 5), ".service");
206 else if (endswith(name, ".sh"))
207 /* Drop Debian-style .sh suffix */
208 strcpy(stpcpy(r, name) - 3, ".service");
210 /* Normal init scripts */
211 strcpy(stpcpy(r, name), ".service");
216 static int sysv_translate_facility(const char *name, char **_r) {
218 static const char * const table[] = {
219 /* LSB defined facilities */
220 "$local_fs", SPECIAL_LOCAL_FS_TARGET,
221 "$network", SPECIAL_NETWORK_TARGET,
222 "$named", SPECIAL_NSS_LOOKUP_TARGET,
223 "$portmap", SPECIAL_RPCBIND_TARGET,
224 "$remote_fs", SPECIAL_REMOTE_FS_TARGET,
225 "$syslog", SPECIAL_SYSLOG_TARGET,
226 "$time", SPECIAL_RTC_SET_TARGET,
228 /* Debian extensions */
229 "$mail-transport-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
230 "$mail-transfer-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
231 "$x-display-manager", SPECIAL_DISPLAY_MANAGER_SERVICE
237 for (i = 0; i < ELEMENTSOF(table); i += 2)
238 if (streq(table[i], name)) {
239 if (!(r = strdup(table[i+1])))
248 if (!(r = sysv_translate_name(name)))
259 static int sysv_fix_order(Service *s) {
265 if (s->sysv_start_priority < 0)
268 /* For each pair of services where at least one lacks a LSB
269 * header, we use the start priority value to order things. */
271 LIST_FOREACH(units_per_type, other, UNIT(s)->meta.manager->units_per_type[UNIT_SERVICE]) {
275 t = (Service*) other;
280 if (t->sysv_start_priority < 0)
283 /* If both units have modern headers we don't care
284 * about the priorities */
285 if ((!s->sysv_path || s->sysv_has_lsb) &&
286 (!t->sysv_path || t->sysv_has_lsb))
289 if (t->sysv_start_priority < s->sysv_start_priority)
291 else if (t->sysv_start_priority > s->sysv_start_priority)
296 /* FIXME: Maybe we should compare the name here lexicographically? */
298 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
305 static ExecCommand *exec_command_new(const char *path, const char *arg1) {
308 if (!(c = new0(ExecCommand, 1)))
311 if (!(c->path = strdup(path))) {
316 if (!(c->argv = strv_new(path, arg1, NULL))) {
325 static int sysv_exec_commands(Service *s) {
329 assert(s->sysv_path);
331 if (!(c = exec_command_new(s->sysv_path, "start")))
333 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
335 if (!(c = exec_command_new(s->sysv_path, "stop")))
337 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
339 if (!(c = exec_command_new(s->sysv_path, "reload")))
341 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
346 static int service_load_sysv_path(Service *s, const char *path) {
363 if (!(f = fopen(path, "re"))) {
364 r = errno == ENOENT ? 0 : -errno;
369 if (!(s->sysv_path = strdup(path))) {
375 char l[LINE_MAX], *t;
377 if (!fgets(l, sizeof(l), f)) {
382 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
392 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
394 s->sysv_has_lsb = true;
398 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
404 t += strspn(t, WHITESPACE);
406 if (state == NORMAL) {
408 /* Try to parse Red Hat style chkconfig headers */
410 if (startswith_no_case(t, "chkconfig:")) {
412 char runlevels[16], *k;
416 if (sscanf(t+10, "%15s %i %*i",
418 &start_priority) != 2) {
420 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
424 /* A start priority gathered from the
425 * symlink farms is preferred over the
426 * data from the LSB header. */
427 if (start_priority < 0 || start_priority > 99)
428 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
429 else if (s->sysv_start_priority < 0)
430 s->sysv_start_priority = start_priority;
432 char_array_0(runlevels);
433 k = delete_chars(runlevels, WHITESPACE "-");
438 if (!(d = strdup(k))) {
443 free(s->sysv_runlevels);
444 s->sysv_runlevels = d;
447 } else if (startswith_no_case(t, "description:")) {
449 size_t k = strlen(t);
452 if (t[k-1] == '\\') {
457 if (!(d = strdup(strstrip(t+12)))) {
462 free(u->meta.description);
463 u->meta.description = d;
465 } else if (startswith_no_case(t, "pidfile:")) {
472 if (!path_is_absolute(fn)) {
473 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
477 if (!(fn = strdup(fn))) {
486 } else if (state == DESCRIPTION) {
488 /* Try to parse Red Hat style description
491 size_t k = strlen(t);
499 assert(u->meta.description);
500 if (asprintf(&d, "%s %s", u->meta.description, strstrip(t)) < 0) {
505 free(u->meta.description);
506 u->meta.description = d;
508 } else if (state == LSB || state == LSB_DESCRIPTION) {
510 if (startswith_no_case(t, "Provides:")) {
516 FOREACH_WORD(w, z, t+9, i) {
519 if (!(n = strndup(w, z))) {
524 r = sysv_translate_facility(n, &m);
533 if (unit_name_to_type(m) == UNIT_SERVICE)
534 r = unit_add_name(u, m);
536 if ((r = unit_add_dependency_by_name_inverse(u, UNIT_REQUIRES, m, NULL, true)) >= 0)
537 r = unit_add_dependency_by_name(u, UNIT_BEFORE, m, NULL, true);
546 } else if (startswith_no_case(t, "Required-Start:") ||
547 startswith_no_case(t, "Should-Start:") ||
548 startswith_no_case(t, "X-Start-Before:") ||
549 startswith_no_case(t, "X-Start-After:")) {
555 FOREACH_WORD(w, z, strchr(t, ':')+1, i) {
558 if (!(n = strndup(w, z))) {
563 r = sysv_translate_facility(n, &m);
572 r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
578 } else if (startswith_no_case(t, "Default-Start:")) {
583 k = delete_chars(t+14, WHITESPACE "-");
586 if (!(d = strdup(k))) {
591 free(s->sysv_runlevels);
592 s->sysv_runlevels = d;
595 } else if (startswith_no_case(t, "Description:")) {
598 state = LSB_DESCRIPTION;
600 if (!(d = strdup(strstrip(t+12)))) {
605 free(u->meta.description);
606 u->meta.description = d;
608 } else if (startswith_no_case(t, "Short-Description:") &&
609 !u->meta.description) {
612 /* We use the short description only
613 * if no long description is set. */
617 if (!(d = strdup(strstrip(t+18)))) {
622 u->meta.description = d;
624 } else if (startswith_no_case(t, "X-Interactive:")) {
627 if ((b = parse_boolean(strstrip(t+14))) < 0) {
628 log_warning("[%s:%u] Couldn't parse interactive flag. Ignoring.", path, line);
633 s->exec_context.std_input = EXEC_INPUT_TTY;
635 s->exec_context.std_input = EXEC_INPUT_NULL;
637 } else if (state == LSB_DESCRIPTION) {
639 if (startswith(l, "#\t") || startswith(l, "# ")) {
642 assert(u->meta.description);
643 if (asprintf(&d, "%s %s", u->meta.description, t) < 0) {
648 free(u->meta.description);
649 u->meta.description = d;
656 if ((r = sysv_exec_commands(s)) < 0)
659 if (!s->sysv_runlevels || chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
660 /* If there a runlevels configured for this service
661 * but none of the standard ones, then we assume this
662 * is some special kind of service (which might be
663 * needed for early boot) and don't create any links
666 if ((r = unit_add_dependency_by_name(u, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0 ||
667 (r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
671 /* Don't timeout special services during boot (like fsck) */
674 /* Special setting for all SysV services */
675 s->type = SERVICE_FORKING;
676 s->valid_no_process = true;
677 s->kill_mode = KILL_PROCESS_GROUP;
678 s->restart = SERVICE_ONCE;
680 u->meta.load_state = UNIT_LOADED;
691 static int service_load_sysv_name(Service *s, const char *name) {
697 /* For SysV services we strip the boot. or .sh
698 * prefixes/suffixes. */
699 if (startswith(name, "boot.") ||
700 endswith(name, ".sh.service"))
703 STRV_FOREACH(p, UNIT(s)->meta.manager->lookup_paths.sysvinit_path) {
707 if (asprintf(&path, "%s/%s", *p, name) < 0)
710 assert(endswith(path, ".service"));
711 path[strlen(path)-8] = 0;
713 r = service_load_sysv_path(s, path);
715 if (r >= 0 && UNIT(s)->meta.load_state == UNIT_STUB) {
716 /* Try Debian style xxx.sh source'able init scripts */
718 r = service_load_sysv_path(s, path);
723 if (r >= 0 && UNIT(s)->meta.load_state == UNIT_STUB) {
724 /* Try SUSE style boot.xxx init scripts */
726 if (asprintf(&path, "%s/boot.%s", *p, name) < 0)
729 path[strlen(path)-8] = 0;
730 r = service_load_sysv_path(s, path);
737 if ((UNIT(s)->meta.load_state != UNIT_STUB))
744 static int service_load_sysv(Service *s) {
751 /* Load service data from SysV init scripts, preferably with
754 if (strv_isempty(UNIT(s)->meta.manager->lookup_paths.sysvinit_path))
757 if ((t = UNIT(s)->meta.id))
758 if ((r = service_load_sysv_name(s, t)) < 0)
761 if (UNIT(s)->meta.load_state == UNIT_STUB)
762 SET_FOREACH(t, UNIT(s)->meta.names, i) {
763 if (t == UNIT(s)->meta.id)
766 if ((r == service_load_sysv_name(s, t)) < 0)
769 if (UNIT(s)->meta.load_state != UNIT_STUB)
776 static int service_add_bus_name(Service *s) {
783 if (asprintf(&n, "dbus-%s.service", s->bus_name) < 0)
786 r = unit_merge_by_name(UNIT(s), n);
792 static int service_verify(Service *s) {
795 if (UNIT(s)->meta.load_state != UNIT_LOADED)
798 if (!s->exec_command[SERVICE_EXEC_START]) {
799 log_error("%s lacks ExecStart setting. Refusing.", UNIT(s)->meta.id);
803 if (s->type == SERVICE_DBUS && !s->bus_name) {
804 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s)->meta.id);
811 static int service_load(Unit *u) {
813 Service *s = SERVICE(u);
817 /* Load a .service file */
818 if ((r = unit_load_fragment(u)) < 0)
821 /* Load a classic init script as a fallback, if we couldn't find anything */
822 if (u->meta.load_state == UNIT_STUB)
823 if ((r = service_load_sysv(s)) < 0)
826 /* Still nothing found? Then let's give up */
827 if (u->meta.load_state == UNIT_STUB)
830 /* We were able to load something, then let's add in the
831 * dropin directories. */
832 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
835 /* This is a new unit? Then let's add in some extras */
836 if (u->meta.load_state == UNIT_LOADED) {
837 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
840 if ((r = unit_add_default_cgroup(u)) < 0)
843 if ((r = sysv_fix_order(s)) < 0)
847 if ((r = service_add_bus_name(s)) < 0)
850 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
854 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
855 s->notify_access = NOTIFY_MAIN;
858 return service_verify(s);
861 static void service_dump(Unit *u, FILE *f, const char *prefix) {
863 ServiceExecCommand c;
864 Service *s = SERVICE(u);
870 p2 = strappend(prefix, "\t");
871 prefix2 = p2 ? p2 : prefix;
874 "%sService State: %s\n"
875 "%sPermissionsStartOnly: %s\n"
876 "%sRootDirectoryStartOnly: %s\n"
877 "%sValidNoProcess: %s\n"
880 "%sNotifyAccess: %s\n",
881 prefix, service_state_to_string(s->state),
882 prefix, yes_no(s->permissions_start_only),
883 prefix, yes_no(s->root_directory_start_only),
884 prefix, yes_no(s->valid_no_process),
885 prefix, kill_mode_to_string(s->kill_mode),
886 prefix, service_type_to_string(s->type),
887 prefix, notify_access_to_string(s->notify_access));
889 if (s->control_pid > 0)
891 "%sControl PID: %llu\n",
892 prefix, (unsigned long long) s->control_pid);
896 "%sMain PID: %llu\n",
897 prefix, (unsigned long long) s->main_pid);
902 prefix, s->pid_file);
907 "%sBus Name Good: %s\n",
909 prefix, yes_no(s->bus_name_good));
911 exec_context_dump(&s->exec_context, f, prefix);
913 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
915 if (!s->exec_command[c])
918 fprintf(f, "%s-> %s:\n",
919 prefix, service_exec_command_to_string(c));
921 exec_command_dump_list(s->exec_command[c], f, prefix2);
926 "%sSysV Init Script Path: %s\n"
927 "%sSysV Init Script has LSB Header: %s\n",
928 prefix, s->sysv_path,
929 prefix, yes_no(s->sysv_has_lsb));
931 if (s->sysv_start_priority >= 0)
933 "%sSysVStartPriority: %i\n",
934 prefix, s->sysv_start_priority);
936 if (s->sysv_runlevels)
937 fprintf(f, "%sSysVRunLevels: %s\n",
938 prefix, s->sysv_runlevels);
941 fprintf(f, "%sStatus Text: %s\n",
942 prefix, s->status_text);
947 static int service_load_pid_file(Service *s) {
954 if (s->main_pid_known)
957 assert(s->main_pid <= 0);
962 if ((r = read_one_line_file(s->pid_file, &k)) < 0)
965 r = parse_pid(k, &pid);
971 if (kill(pid, 0) < 0 && errno != EPERM) {
972 log_warning("PID %lu read from file %s does not exist. Your service or init script might be broken.",
973 (unsigned long) pid, s->pid_file);
977 if ((r = service_set_main_pid(s, pid)) < 0)
980 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
981 /* FIXME: we need to do something here */
987 static int service_get_sockets(Service *s, Set **_set) {
996 /* Collects all Socket objects that belong to this
997 * service. Note that a service might have multiple sockets
998 * via multiple names. */
1000 if (!(set = set_new(NULL, NULL)))
1003 SET_FOREACH(t, UNIT(s)->meta.names, i) {
1007 /* Look for all socket objects that go by any of our
1008 * units and collect their fds */
1010 if (!(k = unit_name_change_suffix(t, ".socket"))) {
1015 p = manager_get_unit(UNIT(s)->meta.manager, k);
1021 if ((r = set_put(set, p)) < 0)
1033 static int service_notify_sockets_dead(Service *s) {
1041 /* Notifies all our sockets when we die */
1042 if ((r = service_get_sockets(s, &set)) < 0)
1045 SET_FOREACH(sock, set, i)
1046 socket_notify_service_dead(sock);
1053 static void service_set_state(Service *s, ServiceState state) {
1054 ServiceState old_state;
1057 old_state = s->state;
1060 if (state != SERVICE_START_PRE &&
1061 state != SERVICE_START &&
1062 state != SERVICE_START_POST &&
1063 state != SERVICE_RELOAD &&
1064 state != SERVICE_STOP &&
1065 state != SERVICE_STOP_SIGTERM &&
1066 state != SERVICE_STOP_SIGKILL &&
1067 state != SERVICE_STOP_POST &&
1068 state != SERVICE_FINAL_SIGTERM &&
1069 state != SERVICE_FINAL_SIGKILL &&
1070 state != SERVICE_AUTO_RESTART)
1071 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1073 if (state != SERVICE_START &&
1074 state != SERVICE_START_POST &&
1075 state != SERVICE_RUNNING &&
1076 state != SERVICE_RELOAD &&
1077 state != SERVICE_STOP &&
1078 state != SERVICE_STOP_SIGTERM &&
1079 state != SERVICE_STOP_SIGKILL)
1080 service_unwatch_main_pid(s);
1082 if (state != SERVICE_START_PRE &&
1083 state != SERVICE_START &&
1084 state != SERVICE_START_POST &&
1085 state != SERVICE_RELOAD &&
1086 state != SERVICE_STOP &&
1087 state != SERVICE_STOP_SIGTERM &&
1088 state != SERVICE_STOP_SIGKILL &&
1089 state != SERVICE_STOP_POST &&
1090 state != SERVICE_FINAL_SIGTERM &&
1091 state != SERVICE_FINAL_SIGKILL) {
1092 service_unwatch_control_pid(s);
1093 s->control_command = NULL;
1094 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1097 if (state == SERVICE_DEAD ||
1098 state == SERVICE_STOP ||
1099 state == SERVICE_STOP_SIGTERM ||
1100 state == SERVICE_STOP_SIGKILL ||
1101 state == SERVICE_STOP_POST ||
1102 state == SERVICE_FINAL_SIGTERM ||
1103 state == SERVICE_FINAL_SIGKILL ||
1104 state == SERVICE_MAINTENANCE ||
1105 state == SERVICE_AUTO_RESTART)
1106 service_notify_sockets_dead(s);
1108 if (state != SERVICE_START_PRE &&
1109 state != SERVICE_START &&
1110 !(state == SERVICE_DEAD && UNIT(s)->meta.job))
1111 service_close_socket_fd(s);
1113 if (old_state != state)
1114 log_debug("%s changed %s -> %s", UNIT(s)->meta.id, service_state_to_string(old_state), service_state_to_string(state));
1116 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
1119 static int service_coldplug(Unit *u) {
1120 Service *s = SERVICE(u);
1124 assert(s->state == SERVICE_DEAD);
1126 if (s->deserialized_state != s->state) {
1128 if (s->deserialized_state == SERVICE_START_PRE ||
1129 s->deserialized_state == SERVICE_START ||
1130 s->deserialized_state == SERVICE_START_POST ||
1131 s->deserialized_state == SERVICE_RELOAD ||
1132 s->deserialized_state == SERVICE_STOP ||
1133 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1134 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1135 s->deserialized_state == SERVICE_STOP_POST ||
1136 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1137 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
1138 s->deserialized_state == SERVICE_AUTO_RESTART) {
1140 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1143 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1145 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1150 if ((s->deserialized_state == SERVICE_START &&
1151 (s->type == SERVICE_FORKING ||
1152 s->type == SERVICE_DBUS ||
1153 s->type == SERVICE_FINISH ||
1154 s->type == SERVICE_NOTIFY)) ||
1155 s->deserialized_state == SERVICE_START_POST ||
1156 s->deserialized_state == SERVICE_RUNNING ||
1157 s->deserialized_state == SERVICE_RELOAD ||
1158 s->deserialized_state == SERVICE_STOP ||
1159 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1160 s->deserialized_state == SERVICE_STOP_SIGKILL)
1161 if (s->main_pid > 0)
1162 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1165 if (s->deserialized_state == SERVICE_START_PRE ||
1166 s->deserialized_state == SERVICE_START ||
1167 s->deserialized_state == SERVICE_START_POST ||
1168 s->deserialized_state == SERVICE_RELOAD ||
1169 s->deserialized_state == SERVICE_STOP ||
1170 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1171 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1172 s->deserialized_state == SERVICE_STOP_POST ||
1173 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1174 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1175 if (s->control_pid > 0)
1176 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1179 service_set_state(s, s->deserialized_state);
1185 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1189 unsigned rn_fds = 0;
1197 if ((r = service_get_sockets(s, &set)) < 0)
1200 SET_FOREACH(sock, set, i) {
1204 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
1216 if (!(t = new(int, rn_fds+cn_fds))) {
1222 memcpy(t, rfds, rn_fds);
1223 memcpy(t+rn_fds, cfds, cn_fds);
1228 rn_fds = rn_fds+cn_fds;
1246 static int service_spawn(
1251 bool apply_permissions,
1253 bool set_notify_socket,
1260 char **argv = NULL, **env = NULL;
1267 if (s->socket_fd >= 0) {
1268 fds = &s->socket_fd;
1270 } else if ((r = service_collect_fds(s, &fds, &n_fds)) < 0)
1274 if (timeout && s->timeout_usec) {
1275 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1278 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1280 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1285 if (set_notify_socket) {
1288 if (asprintf(&t, "NOTIFY_SOCKET=@%s", s->meta.manager->notify_socket) < 0) {
1293 env = strv_env_set(s->meta.manager->environment, t);
1301 env = s->meta.manager->environment;
1310 UNIT(s)->meta.manager->confirm_spawn,
1311 UNIT(s)->meta.cgroup_bondings,
1317 if (set_notify_socket)
1325 if (s->socket_fd >= 0)
1326 service_close_socket_fd(s);
1331 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1332 /* FIXME: we need to do something here */
1344 if (set_notify_socket)
1348 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1353 static int main_pid_good(Service *s) {
1356 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1359 /* If we know the pid file, then lets just check if it is
1361 if (s->main_pid_known)
1362 return s->main_pid > 0;
1364 /* We don't know the pid */
1368 static int control_pid_good(Service *s) {
1371 return s->control_pid > 0;
1374 static int cgroup_good(Service *s) {
1379 if (s->valid_no_process)
1382 if ((r = cgroup_bonding_is_empty_list(UNIT(s)->meta.cgroup_bondings)) < 0)
1388 static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1395 if (allow_restart &&
1397 (s->restart == SERVICE_RESTART_ALWAYS ||
1398 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
1400 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
1403 service_set_state(s, SERVICE_AUTO_RESTART);
1405 service_set_state(s, s->failure ? SERVICE_MAINTENANCE : SERVICE_DEAD);
1410 log_warning("%s failed to run install restart timer: %s", UNIT(s)->meta.id, strerror(-r));
1411 service_enter_dead(s, false, false);
1414 static void service_enter_signal(Service *s, ServiceState state, bool success);
1416 static void service_enter_stop_post(Service *s, bool success) {
1423 service_unwatch_control_pid(s);
1425 s->control_command_id = SERVICE_EXEC_STOP_POST;
1426 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
1427 if ((r = service_spawn(s,
1431 !s->permissions_start_only,
1432 !s->root_directory_start_only,
1434 &s->control_pid)) < 0)
1438 service_set_state(s, SERVICE_STOP_POST);
1440 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
1445 log_warning("%s failed to run 'stop-post' task: %s", UNIT(s)->meta.id, strerror(-r));
1446 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1449 static void service_enter_signal(Service *s, ServiceState state, bool success) {
1458 if (s->kill_mode != KILL_NONE) {
1459 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
1461 if (s->kill_mode == KILL_CONTROL_GROUP) {
1463 if ((r = cgroup_bonding_kill_list(UNIT(s)->meta.cgroup_bondings, sig)) < 0) {
1464 if (r != -EAGAIN && r != -ESRCH)
1473 if (s->main_pid > 0) {
1474 if (kill(s->kill_mode == KILL_PROCESS ? s->main_pid : -s->main_pid, sig) < 0 && errno != ESRCH)
1480 if (s->control_pid > 0) {
1481 if (kill(s->kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH)
1492 if (sent && (s->main_pid > 0 || s->control_pid > 0)) {
1493 if (s->timeout_usec > 0)
1494 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1497 service_set_state(s, state);
1498 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1499 service_enter_stop_post(s, true);
1501 service_enter_dead(s, true, true);
1506 log_warning("%s failed to kill processes: %s", UNIT(s)->meta.id, strerror(-r));
1508 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1509 service_enter_stop_post(s, false);
1511 service_enter_dead(s, false, true);
1514 static void service_enter_stop(Service *s, bool success) {
1522 service_unwatch_control_pid(s);
1524 s->control_command_id = SERVICE_EXEC_STOP;
1525 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
1526 if ((r = service_spawn(s,
1530 !s->permissions_start_only,
1531 !s->root_directory_start_only,
1533 &s->control_pid)) < 0)
1536 service_set_state(s, SERVICE_STOP);
1538 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1543 log_warning("%s failed to run 'stop' task: %s", UNIT(s)->meta.id, strerror(-r));
1544 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1547 static void service_enter_running(Service *s, bool success) {
1553 if (main_pid_good(s) != 0 &&
1554 cgroup_good(s) != 0 &&
1555 (s->bus_name_good || s->type != SERVICE_DBUS))
1556 service_set_state(s, SERVICE_RUNNING);
1557 else if (s->valid_no_process)
1558 service_set_state(s, SERVICE_EXITED);
1560 service_enter_stop(s, true);
1563 static void service_enter_start_post(Service *s) {
1567 service_unwatch_control_pid(s);
1569 s->control_command_id = SERVICE_EXEC_START_POST;
1570 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
1571 if ((r = service_spawn(s,
1575 !s->permissions_start_only,
1576 !s->root_directory_start_only,
1578 &s->control_pid)) < 0)
1581 service_set_state(s, SERVICE_START_POST);
1583 service_enter_running(s, true);
1588 log_warning("%s failed to run 'start-post' task: %s", UNIT(s)->meta.id, strerror(-r));
1589 service_enter_stop(s, false);
1592 static void service_enter_start(Service *s) {
1598 assert(s->exec_command[SERVICE_EXEC_START]);
1599 assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
1601 if (s->type == SERVICE_FORKING)
1602 service_unwatch_control_pid(s);
1604 service_unwatch_main_pid(s);
1606 if ((r = service_spawn(s,
1607 s->exec_command[SERVICE_EXEC_START],
1608 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY,
1612 s->notify_access != NOTIFY_NONE,
1616 if (s->type == SERVICE_SIMPLE) {
1617 /* For simple services we immediately start
1618 * the START_POST binaries. */
1620 service_set_main_pid(s, pid);
1621 service_enter_start_post(s);
1623 } else if (s->type == SERVICE_FORKING) {
1625 /* For forking services we wait until the start
1626 * process exited. */
1628 s->control_command_id = SERVICE_EXEC_START;
1629 s->control_command = s->exec_command[SERVICE_EXEC_START];
1631 s->control_pid = pid;
1632 service_set_state(s, SERVICE_START);
1634 } else if (s->type == SERVICE_FINISH ||
1635 s->type == SERVICE_DBUS ||
1636 s->type == SERVICE_NOTIFY) {
1638 /* For finishing services we wait until the start
1639 * process exited, too, but it is our main process. */
1641 /* For D-Bus services we know the main pid right away,
1642 * but wait for the bus name to appear on the
1643 * bus. Notify services are similar. */
1645 service_set_main_pid(s, pid);
1646 service_set_state(s, SERVICE_START);
1648 assert_not_reached("Unknown service type");
1653 log_warning("%s failed to run 'start' task: %s", UNIT(s)->meta.id, strerror(-r));
1654 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1657 static void service_enter_start_pre(Service *s) {
1662 service_unwatch_control_pid(s);
1664 s->control_command_id = SERVICE_EXEC_START_PRE;
1665 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
1666 if ((r = service_spawn(s,
1670 !s->permissions_start_only,
1671 !s->root_directory_start_only,
1673 &s->control_pid)) < 0)
1676 service_set_state(s, SERVICE_START_PRE);
1678 service_enter_start(s);
1683 log_warning("%s failed to run 'start-pre' task: %s", UNIT(s)->meta.id, strerror(-r));
1684 service_enter_dead(s, false, true);
1687 static void service_enter_restart(Service *s) {
1691 service_enter_dead(s, true, false);
1693 if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL)) < 0)
1696 log_debug("%s scheduled restart job.", UNIT(s)->meta.id);
1701 log_warning("%s failed to schedule restart job: %s", UNIT(s)->meta.id, strerror(-r));
1702 service_enter_dead(s, false, false);
1705 static void service_enter_reload(Service *s) {
1710 service_unwatch_control_pid(s);
1712 s->control_command_id = SERVICE_EXEC_RELOAD;
1713 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
1714 if ((r = service_spawn(s,
1718 !s->permissions_start_only,
1719 !s->root_directory_start_only,
1721 &s->control_pid)) < 0)
1724 service_set_state(s, SERVICE_RELOAD);
1726 service_enter_running(s, true);
1731 log_warning("%s failed to run 'reload' task: %s", UNIT(s)->meta.id, strerror(-r));
1732 service_enter_stop(s, false);
1735 static void service_run_next(Service *s, bool success) {
1739 assert(s->control_command);
1740 assert(s->control_command->command_next);
1745 s->control_command = s->control_command->command_next;
1747 service_unwatch_control_pid(s);
1749 if ((r = service_spawn(s,
1753 !s->permissions_start_only,
1754 !s->root_directory_start_only,
1756 &s->control_pid)) < 0)
1762 log_warning("%s failed to run spawn next task: %s", UNIT(s)->meta.id, strerror(-r));
1764 if (s->state == SERVICE_START_PRE)
1765 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1766 else if (s->state == SERVICE_STOP)
1767 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1768 else if (s->state == SERVICE_STOP_POST)
1769 service_enter_dead(s, false, true);
1771 service_enter_stop(s, false);
1774 static int service_start(Unit *u) {
1775 Service *s = SERVICE(u);
1779 /* We cannot fulfill this request right now, try again later
1781 if (s->state == SERVICE_STOP ||
1782 s->state == SERVICE_STOP_SIGTERM ||
1783 s->state == SERVICE_STOP_SIGKILL ||
1784 s->state == SERVICE_STOP_POST ||
1785 s->state == SERVICE_FINAL_SIGTERM ||
1786 s->state == SERVICE_FINAL_SIGKILL)
1789 /* Already on it! */
1790 if (s->state == SERVICE_START_PRE ||
1791 s->state == SERVICE_START ||
1792 s->state == SERVICE_START_POST)
1795 assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTENANCE || s->state == SERVICE_AUTO_RESTART);
1797 /* Make sure we don't enter a busy loop of some kind. */
1798 if (!ratelimit_test(&s->ratelimit)) {
1799 log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
1804 s->main_pid_known = false;
1805 s->allow_restart = true;
1807 service_enter_start_pre(s);
1811 static int service_stop(Unit *u) {
1812 Service *s = SERVICE(u);
1816 /* Cannot do this now */
1817 if (s->state == SERVICE_START_PRE ||
1818 s->state == SERVICE_START ||
1819 s->state == SERVICE_START_POST ||
1820 s->state == SERVICE_RELOAD)
1824 if (s->state == SERVICE_STOP ||
1825 s->state == SERVICE_STOP_SIGTERM ||
1826 s->state == SERVICE_STOP_SIGKILL ||
1827 s->state == SERVICE_STOP_POST ||
1828 s->state == SERVICE_FINAL_SIGTERM ||
1829 s->state == SERVICE_FINAL_SIGKILL)
1832 if (s->state == SERVICE_AUTO_RESTART) {
1833 service_set_state(s, SERVICE_DEAD);
1837 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
1839 /* This is a user request, so don't do restarts on this
1841 s->allow_restart = false;
1843 service_enter_stop(s, true);
1847 static int service_reload(Unit *u) {
1848 Service *s = SERVICE(u);
1852 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
1854 service_enter_reload(s);
1858 static bool service_can_reload(Unit *u) {
1859 Service *s = SERVICE(u);
1863 return !!s->exec_command[SERVICE_EXEC_RELOAD];
1866 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
1867 Service *s = SERVICE(u);
1873 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
1874 unit_serialize_item(u, f, "failure", yes_no(s->failure));
1876 if (s->control_pid > 0)
1877 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
1879 if (s->main_pid_known && s->main_pid > 0)
1880 unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
1882 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
1884 /* There's a minor uncleanliness here: if there are multiple
1885 * commands attached here, we will start from the first one
1887 if (s->control_command_id >= 0)
1888 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
1890 if (s->socket_fd >= 0) {
1893 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
1896 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
1902 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
1903 Service *s = SERVICE(u);
1911 if (streq(key, "state")) {
1914 if ((state = service_state_from_string(value)) < 0)
1915 log_debug("Failed to parse state value %s", value);
1917 s->deserialized_state = state;
1918 } else if (streq(key, "failure")) {
1921 if ((b = parse_boolean(value)) < 0)
1922 log_debug("Failed to parse failure value %s", value);
1924 s->failure = b || s->failure;
1925 } else if (streq(key, "control-pid")) {
1928 if ((r = parse_pid(value, &pid)) < 0)
1929 log_debug("Failed to parse control-pid value %s", value);
1931 s->control_pid = pid;
1932 } else if (streq(key, "main-pid")) {
1935 if ((r = parse_pid(value, &pid)) < 0)
1936 log_debug("Failed to parse main-pid value %s", value);
1938 service_set_main_pid(s, (pid_t) pid);
1939 } else if (streq(key, "main-pid-known")) {
1942 if ((b = parse_boolean(value)) < 0)
1943 log_debug("Failed to parse main-pid-known value %s", value);
1945 s->main_pid_known = b;
1946 } else if (streq(key, "control-command")) {
1947 ServiceExecCommand id;
1949 if ((id = service_exec_command_from_string(value)) < 0)
1950 log_debug("Failed to parse exec-command value %s", value);
1952 s->control_command_id = id;
1953 s->control_command = s->exec_command[id];
1955 } else if (streq(key, "socket-fd")) {
1958 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
1959 log_debug("Failed to parse socket-fd value %s", value);
1962 if (s->socket_fd >= 0)
1963 close_nointr_nofail(s->socket_fd);
1964 s->socket_fd = fdset_remove(fds, fd);
1967 log_debug("Unknown serialization key '%s'", key);
1972 static UnitActiveState service_active_state(Unit *u) {
1975 return state_translation_table[SERVICE(u)->state];
1978 static const char *service_sub_state_to_string(Unit *u) {
1981 return service_state_to_string(SERVICE(u)->state);
1984 static bool service_check_gc(Unit *u) {
1985 Service *s = SERVICE(u);
1989 return !!s->sysv_path;
1992 static bool service_check_snapshot(Unit *u) {
1993 Service *s = SERVICE(u);
1997 return !s->got_socket_fd;
2000 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2001 Service *s = SERVICE(u);
2007 success = is_clean_exit(code, status);
2008 s->failure = s->failure || !success;
2010 if (s->main_pid == pid) {
2012 exec_status_fill(&s->main_exec_status, pid, code, status);
2015 if (s->type != SERVICE_FORKING) {
2016 assert(s->exec_command[SERVICE_EXEC_START]);
2017 s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
2020 log_debug("%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status);
2022 /* The service exited, so the service is officially
2027 case SERVICE_START_POST:
2028 case SERVICE_RELOAD:
2030 /* Need to wait until the operation is
2035 if (s->type == SERVICE_FINISH) {
2036 /* This was our main goal, so let's go on */
2038 service_enter_start_post(s);
2040 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2043 assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY);
2048 case SERVICE_RUNNING:
2049 service_enter_running(s, success);
2052 case SERVICE_STOP_SIGTERM:
2053 case SERVICE_STOP_SIGKILL:
2055 if (!control_pid_good(s))
2056 service_enter_stop_post(s, success);
2058 /* If there is still a control process, wait for that first */
2062 assert_not_reached("Uh, main process died at wrong time.");
2065 } else if (s->control_pid == pid) {
2067 if (s->control_command)
2068 exec_status_fill(&s->control_command->exec_status, pid, code, status);
2072 log_debug("%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
2074 /* If we are shutting things down anyway we
2075 * don't care about failing commands. */
2077 if (s->control_command && s->control_command->command_next && success) {
2079 /* There is another command to *
2080 * execute, so let's do that. */
2082 log_debug("%s running next command for state %s", u->meta.id, service_state_to_string(s->state));
2083 service_run_next(s, success);
2086 /* No further commands for this step, so let's
2087 * figure out what to do next */
2089 s->control_command = NULL;
2090 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2092 log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state));
2096 case SERVICE_START_PRE:
2098 service_enter_start(s);
2100 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2104 assert(s->type == SERVICE_FORKING);
2106 /* Let's try to load the pid
2107 * file here if we can. We
2108 * ignore the return value,
2109 * since the PID file might
2110 * actually be created by a
2111 * START_POST script */
2115 service_load_pid_file(s);
2117 service_enter_start_post(s);
2119 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2123 case SERVICE_START_POST:
2124 if (success && s->pid_file && !s->main_pid_known) {
2127 /* Hmm, let's see if we can
2128 * load the pid now after the
2129 * start-post scripts got
2132 if ((r = service_load_pid_file(s)) < 0)
2133 log_warning("%s: failed to load PID file %s: %s", UNIT(s)->meta.id, s->pid_file, strerror(-r));
2138 case SERVICE_RELOAD:
2140 service_enter_running(s, true);
2142 service_enter_stop(s, false);
2147 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
2150 case SERVICE_STOP_SIGTERM:
2151 case SERVICE_STOP_SIGKILL:
2152 if (main_pid_good(s) <= 0)
2153 service_enter_stop_post(s, success);
2155 /* If there is still a service
2156 * process around, wait until
2157 * that one quit, too */
2160 case SERVICE_STOP_POST:
2161 case SERVICE_FINAL_SIGTERM:
2162 case SERVICE_FINAL_SIGKILL:
2163 service_enter_dead(s, success, true);
2167 assert_not_reached("Uh, control process died at wrong time.");
2173 static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
2174 Service *s = SERVICE(u);
2177 assert(elapsed == 1);
2179 assert(w == &s->timer_watch);
2183 case SERVICE_START_PRE:
2185 log_warning("%s operation timed out. Terminating.", u->meta.id);
2186 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2189 case SERVICE_START_POST:
2190 case SERVICE_RELOAD:
2191 log_warning("%s operation timed out. Stopping.", u->meta.id);
2192 service_enter_stop(s, false);
2196 log_warning("%s stopping timed out. Terminating.", u->meta.id);
2197 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2200 case SERVICE_STOP_SIGTERM:
2201 log_warning("%s stopping timed out. Killing.", u->meta.id);
2202 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2205 case SERVICE_STOP_SIGKILL:
2206 /* Uh, wie sent a SIGKILL and it is still not gone?
2207 * Must be something we cannot kill, so let's just be
2208 * weirded out and continue */
2210 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
2211 service_enter_stop_post(s, false);
2214 case SERVICE_STOP_POST:
2215 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
2216 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2219 case SERVICE_FINAL_SIGTERM:
2220 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
2221 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
2224 case SERVICE_FINAL_SIGKILL:
2225 log_warning("%s still around after SIGKILL (2). Entering maintenance mode.", u->meta.id);
2226 service_enter_dead(s, false, true);
2229 case SERVICE_AUTO_RESTART:
2230 log_debug("%s holdoff time over, scheduling restart.", u->meta.id);
2231 service_enter_restart(s);
2235 assert_not_reached("Timeout at wrong time.");
2239 static void service_cgroup_notify_event(Unit *u) {
2240 Service *s = SERVICE(u);
2244 log_debug("%s: cgroup is empty", u->meta.id);
2248 /* Waiting for SIGCHLD is usually more interesting,
2249 * because it includes return codes/signals. Which is
2250 * why we ignore the cgroup events for most cases,
2251 * except when we don't know pid which to expect the
2254 case SERVICE_RUNNING:
2255 service_enter_running(s, true);
2263 static void service_notify_message(Unit *u, pid_t pid, char **tags) {
2264 Service *s = SERVICE(u);
2269 if (s->notify_access == NOTIFY_NONE) {
2270 log_warning("%s: Got notification message from PID %lu, but reception is disabled.",
2271 u->meta.id, (unsigned long) pid);
2275 if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
2276 log_warning("%s: Got notification message from PID %lu, but reception only permitted for PID %lu",
2277 u->meta.id, (unsigned long) pid, (unsigned long) s->main_pid);
2281 log_debug("%s: Got message", u->meta.id);
2283 /* Interpret MAINPID= */
2284 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
2285 (s->state == SERVICE_START ||
2286 s->state == SERVICE_START_POST ||
2287 s->state == SERVICE_RUNNING ||
2288 s->state == SERVICE_RELOAD)) {
2290 if (parse_pid(e + 8, &pid) < 0)
2291 log_warning("Failed to parse %s", e);
2293 log_debug("%s: got %s", u->meta.id, e);
2294 service_set_main_pid(s, pid);
2298 /* Interpret READY= */
2299 if (s->type == SERVICE_NOTIFY &&
2300 s->state == SERVICE_START &&
2301 strv_find(tags, "READY=1")) {
2302 log_debug("%s: got READY=1", u->meta.id);
2304 service_enter_start_post(s);
2307 /* Interpret STATUS= */
2308 if ((e = strv_find_prefix(tags, "STATUS="))) {
2311 if (!(t = strdup(e+7))) {
2312 log_error("Failed to allocate string.");
2316 log_debug("%s: got %s", u->meta.id, e);
2318 free(s->status_text);
2323 static int service_enumerate(Manager *m) {
2327 char *path = NULL, *fpath = NULL, *name = NULL;
2332 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
2333 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
2338 if (asprintf(&path, "%s/%s", *p, rcnd_table[i].path) < 0) {
2346 if (!(d = opendir(path))) {
2347 if (errno != ENOENT)
2348 log_warning("opendir() failed on %s: %s", path, strerror(errno));
2353 while ((de = readdir(d))) {
2357 if (ignore_file(de->d_name))
2360 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
2363 if (strlen(de->d_name) < 4)
2366 a = undecchar(de->d_name[1]);
2367 b = undecchar(de->d_name[2]);
2374 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i].path, de->d_name) < 0) {
2379 if (access(fpath, X_OK) < 0) {
2381 if (errno != ENOENT)
2382 log_warning("access() failed on %s: %s", fpath, strerror(errno));
2388 if (!(name = sysv_translate_name(de->d_name + 3))) {
2393 if ((r = manager_load_unit_prepare(m, name, NULL, &service)) < 0) {
2394 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
2398 if (de->d_name[0] == 'S' &&
2399 (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT))
2400 SERVICE(service)->sysv_start_priority =
2401 MAX(a*10 + b, SERVICE(service)->sysv_start_priority);
2403 manager_dispatch_load_queue(m);
2404 service = unit_follow_merge(service);
2406 if (de->d_name[0] == 'S') {
2407 Unit *runlevel_target;
2409 if ((r = manager_load_unit(m, rcnd_table[i].target, NULL, &runlevel_target)) < 0)
2412 if ((r = unit_add_dependency(runlevel_target, UNIT_WANTS, service, true)) < 0)
2415 if ((r = unit_add_dependency(service, UNIT_BEFORE, runlevel_target, true)) < 0)
2418 } else if (de->d_name[0] == 'K' &&
2419 (rcnd_table[i].type == RUNLEVEL_DOWN ||
2420 rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
2421 Unit *shutdown_target;
2423 /* We honour K links only for
2424 * halt/reboot. For the normal
2425 * runlevels we assume the
2427 * implicitly added by the
2428 * core logic. Also, we don't
2429 * really distuingish here
2430 * between the runlevels 0 and
2431 * 6 and just add them to the
2432 * special shutdown target. On
2433 * SUSE the boot.d/ runlevel
2434 * is also used for shutdown,
2435 * so we add links for that
2436 * too to the shutdown
2439 if ((r = manager_load_unit(m, SPECIAL_SHUTDOWN_TARGET, NULL, &shutdown_target)) < 0)
2442 if ((r = unit_add_dependency(service, UNIT_CONFLICTS, shutdown_target, true)) < 0)
2445 if ((r = unit_add_dependency(service, UNIT_BEFORE, shutdown_target, true)) < 0)
2464 static void service_bus_name_owner_change(
2467 const char *old_owner,
2468 const char *new_owner) {
2470 Service *s = SERVICE(u);
2475 assert(streq(s->bus_name, name));
2476 assert(old_owner || new_owner);
2478 if (old_owner && new_owner)
2479 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->meta.id, name, old_owner, new_owner);
2481 log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner);
2483 log_debug("%s's D-Bus name %s now registered by %s", u->meta.id, name, new_owner);
2485 s->bus_name_good = !!new_owner;
2487 if (s->type == SERVICE_DBUS) {
2489 /* service_enter_running() will figure out what to
2491 if (s->state == SERVICE_RUNNING)
2492 service_enter_running(s, true);
2493 else if (s->state == SERVICE_START && new_owner)
2494 service_enter_start_post(s);
2496 } else if (new_owner &&
2498 (s->state == SERVICE_START ||
2499 s->state == SERVICE_START_POST ||
2500 s->state == SERVICE_RUNNING ||
2501 s->state == SERVICE_RELOAD)) {
2503 /* Try to acquire PID from bus service */
2504 log_debug("Trying to acquire PID from D-Bus name...");
2506 bus_query_pid(u->meta.manager, name);
2510 static void service_bus_query_pid_done(
2515 Service *s = SERVICE(u);
2520 log_debug("%s's D-Bus name %s is now owned by process %u", u->meta.id, name, (unsigned) pid);
2522 if (s->main_pid <= 0 &&
2523 (s->state == SERVICE_START ||
2524 s->state == SERVICE_START_POST ||
2525 s->state == SERVICE_RUNNING ||
2526 s->state == SERVICE_RELOAD))
2527 service_set_main_pid(s, pid);
2530 int service_set_socket_fd(Service *s, int fd) {
2534 /* This is called by the socket code when instantiating a new
2535 * service for a stream socket and the socket needs to be
2538 if (UNIT(s)->meta.load_state != UNIT_LOADED)
2541 if (s->socket_fd >= 0)
2544 if (s->state != SERVICE_DEAD)
2548 s->got_socket_fd = true;
2552 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
2553 [SERVICE_DEAD] = "dead",
2554 [SERVICE_START_PRE] = "start-pre",
2555 [SERVICE_START] = "start",
2556 [SERVICE_START_POST] = "start-post",
2557 [SERVICE_RUNNING] = "running",
2558 [SERVICE_EXITED] = "exited",
2559 [SERVICE_RELOAD] = "reload",
2560 [SERVICE_STOP] = "stop",
2561 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
2562 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
2563 [SERVICE_STOP_POST] = "stop-post",
2564 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
2565 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
2566 [SERVICE_MAINTENANCE] = "maintenance",
2567 [SERVICE_AUTO_RESTART] = "auto-restart",
2570 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
2572 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
2573 [SERVICE_ONCE] = "once",
2574 [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
2575 [SERVICE_RESTART_ALWAYS] = "restart-always",
2578 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
2580 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
2581 [SERVICE_FORKING] = "forking",
2582 [SERVICE_SIMPLE] = "simple",
2583 [SERVICE_FINISH] = "finish",
2584 [SERVICE_DBUS] = "dbus",
2585 [SERVICE_NOTIFY] = "notify"
2588 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
2590 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
2591 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
2592 [SERVICE_EXEC_START] = "ExecStart",
2593 [SERVICE_EXEC_START_POST] = "ExecStartPost",
2594 [SERVICE_EXEC_RELOAD] = "ExecReload",
2595 [SERVICE_EXEC_STOP] = "ExecStop",
2596 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
2599 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
2601 static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
2602 [NOTIFY_NONE] = "none",
2603 [NOTIFY_MAIN] = "main",
2604 [NOTIFY_ALL] = "all"
2607 DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
2609 const UnitVTable service_vtable = {
2610 .suffix = ".service",
2612 .init = service_init,
2613 .done = service_done,
2614 .load = service_load,
2616 .coldplug = service_coldplug,
2618 .dump = service_dump,
2620 .start = service_start,
2621 .stop = service_stop,
2622 .reload = service_reload,
2624 .can_reload = service_can_reload,
2626 .serialize = service_serialize,
2627 .deserialize_item = service_deserialize_item,
2629 .active_state = service_active_state,
2630 .sub_state_to_string = service_sub_state_to_string,
2632 .check_gc = service_check_gc,
2633 .check_snapshot = service_check_snapshot,
2635 .sigchld_event = service_sigchld_event,
2636 .timer_event = service_timer_event,
2638 .cgroup_notify_empty = service_cgroup_notify_event,
2639 .notify_message = service_notify_message,
2641 .bus_name_owner_change = service_bus_name_owner_change,
2642 .bus_query_pid_done = service_bus_query_pid_done,
2644 .bus_message_handler = bus_service_message_handler,
2646 .enumerate = service_enumerate