1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
29 #include "load-fragment.h"
30 #include "load-dropin.h"
33 #include "unit-name.h"
34 #include "dbus-service.h"
36 #define COMMENTS "#;\n"
37 #define NEWLINES "\n\r"
40 typedef enum RunlevelType {
49 const RunlevelType type;
51 /* Standard SysV runlevels */
52 { "rc0.d", SPECIAL_RUNLEVEL0_TARGET, RUNLEVEL_DOWN },
53 { "rc1.d", SPECIAL_RUNLEVEL1_TARGET, RUNLEVEL_UP },
54 { "rc2.d", SPECIAL_RUNLEVEL2_TARGET, RUNLEVEL_UP },
55 { "rc3.d", SPECIAL_RUNLEVEL3_TARGET, RUNLEVEL_UP },
56 { "rc4.d", SPECIAL_RUNLEVEL4_TARGET, RUNLEVEL_UP },
57 { "rc5.d", SPECIAL_RUNLEVEL5_TARGET, RUNLEVEL_UP },
58 { "rc6.d", SPECIAL_RUNLEVEL6_TARGET, RUNLEVEL_DOWN },
60 /* SuSE style boot.d */
61 { "boot.d", SPECIAL_BASIC_TARGET, RUNLEVEL_BASIC },
63 /* Debian style rcS.d */
64 { "rcS.d", SPECIAL_BASIC_TARGET, RUNLEVEL_BASIC },
67 #define RUNLEVELS_UP "12345"
68 /* #define RUNLEVELS_DOWN "06" */
69 /* #define RUNLEVELS_BOOT "bBsS" */
71 static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
72 [SERVICE_DEAD] = UNIT_INACTIVE,
73 [SERVICE_START_PRE] = UNIT_ACTIVATING,
74 [SERVICE_START] = UNIT_ACTIVATING,
75 [SERVICE_START_POST] = UNIT_ACTIVATING,
76 [SERVICE_RUNNING] = UNIT_ACTIVE,
77 [SERVICE_EXITED] = UNIT_ACTIVE,
78 [SERVICE_RELOAD] = UNIT_ACTIVE_RELOADING,
79 [SERVICE_STOP] = UNIT_DEACTIVATING,
80 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
81 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
82 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
83 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
84 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
85 [SERVICE_MAINTAINANCE] = UNIT_INACTIVE,
86 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING,
89 static void service_init(Unit *u) {
90 Service *s = SERVICE(u);
93 assert(u->meta.load_state == UNIT_STUB);
95 s->timeout_usec = DEFAULT_TIMEOUT_USEC;
96 s->restart_usec = DEFAULT_RESTART_USEC;
97 s->timer_watch.type = WATCH_INVALID;
98 s->sysv_start_priority = -1;
101 exec_context_init(&s->exec_context);
103 RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
105 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
108 static void service_unwatch_control_pid(Service *s) {
111 if (s->control_pid <= 0)
114 unit_unwatch_pid(UNIT(s), s->control_pid);
118 static void service_unwatch_main_pid(Service *s) {
121 if (s->main_pid <= 0)
124 unit_unwatch_pid(UNIT(s), s->main_pid);
128 static void service_close_socket_fd(Service *s) {
131 if (s->socket_fd < 0)
134 close_nointr_nofail(s->socket_fd);
138 static void service_done(Unit *u) {
139 Service *s = SERVICE(u);
149 free(s->sysv_runlevels);
150 s->sysv_runlevels = NULL;
152 exec_context_done(&s->exec_context);
153 exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
154 s->control_command = NULL;
156 /* This will leak a process, but at least no memory or any of
158 service_unwatch_main_pid(s);
159 service_unwatch_control_pid(s);
162 unit_unwatch_bus_name(UNIT(u), s->bus_name);
167 service_close_socket_fd(s);
169 unit_unwatch_timer(u, &s->timer_watch);
172 static char *sysv_translate_name(const char *name) {
175 if (!(r = new(char, strlen(name) + sizeof(".service"))))
178 if (startswith(name, "boot."))
179 /* Drop SuSE-style boot. prefix */
180 strcpy(stpcpy(r, name + 5), ".service");
181 else if (endswith(name, ".sh"))
182 /* Drop Debian-style .sh suffix */
183 strcpy(stpcpy(r, name) - 3, ".service");
185 /* Normal init scripts */
186 strcpy(stpcpy(r, name), ".service");
191 static int sysv_translate_facility(const char *name, char **_r) {
193 static const char * const table[] = {
194 "$local_fs", SPECIAL_LOCAL_FS_TARGET,
195 "$network", SPECIAL_NETWORK_TARGET,
196 "$named", SPECIAL_NSS_LOOKUP_TARGET,
197 "$portmap", SPECIAL_RPCBIND_TARGET,
198 "$remote_fs", SPECIAL_REMOTE_FS_TARGET,
199 "$syslog", SPECIAL_SYSLOG_TARGET,
200 "$time", SPECIAL_RTC_SET_TARGET
206 for (i = 0; i < ELEMENTSOF(table); i += 2)
207 if (streq(table[i], name)) {
208 if (!(r = strdup(table[i+1])))
217 if (!(r = sysv_translate_name(name)))
228 static int sysv_chkconfig_order(Service *s) {
234 if (s->sysv_start_priority < 0)
237 /* For each pair of services where at least one lacks a LSB
238 * header, we use the start priority value to order things. */
240 LIST_FOREACH(units_per_type, other, UNIT(s)->meta.manager->units_per_type[UNIT_SERVICE]) {
244 t = (Service*) other;
249 if (t->sysv_start_priority < 0)
252 /* If both units have modern headers we don't care
253 * about the priorities */
254 if ((!s->sysv_path || s->sysv_has_lsb) &&
255 (!t->sysv_path || t->sysv_has_lsb))
258 if (t->sysv_start_priority < s->sysv_start_priority)
260 else if (t->sysv_start_priority > s->sysv_start_priority)
265 /* FIXME: Maybe we should compare the name here lexicographically? */
267 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
274 static ExecCommand *exec_command_new(const char *path, const char *arg1) {
277 if (!(c = new0(ExecCommand, 1)))
280 if (!(c->path = strdup(path))) {
285 if (!(c->argv = strv_new(path, arg1, NULL))) {
294 static int sysv_exec_commands(Service *s) {
298 assert(s->sysv_path);
300 if (!(c = exec_command_new(s->sysv_path, "start")))
302 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
304 if (!(c = exec_command_new(s->sysv_path, "stop")))
306 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
308 if (!(c = exec_command_new(s->sysv_path, "reload")))
310 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
315 static int service_load_sysv_path(Service *s, const char *path) {
332 if (!(f = fopen(path, "re"))) {
333 r = errno == ENOENT ? 0 : -errno;
337 s->type = SERVICE_FORKING;
338 s->restart = SERVICE_ONCE;
341 if (!(s->sysv_path = strdup(path))) {
347 char l[LINE_MAX], *t;
349 if (!fgets(l, sizeof(l), f)) {
354 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
364 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
366 s->sysv_has_lsb = true;
370 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
376 t += strspn(t, WHITESPACE);
378 if (state == NORMAL) {
380 /* Try to parse Red Hat style chkconfig headers */
382 if (startswith(t, "chkconfig:")) {
384 char runlevels[16], *k;
388 if (sscanf(t+10, "%15s %i %*i",
390 &start_priority) != 2) {
392 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
396 /* A start priority gathered from the
397 * symlink farms is preferred over the
398 * data from the LSB header. */
399 if (start_priority < 0 || start_priority > 99)
400 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
401 else if (s->sysv_start_priority < 0)
402 s->sysv_start_priority = start_priority;
404 char_array_0(runlevels);
405 k = delete_chars(runlevels, WHITESPACE "-");
410 if (!(d = strdup(k))) {
415 free(s->sysv_runlevels);
416 s->sysv_runlevels = d;
419 } else if (startswith(t, "description:")) {
421 size_t k = strlen(t);
424 if (t[k-1] == '\\') {
429 if (!(d = strdup(strstrip(t+12)))) {
434 free(u->meta.description);
435 u->meta.description = d;
437 } else if (startswith(t, "pidfile:")) {
444 if (!path_is_absolute(fn)) {
445 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
449 if (!(fn = strdup(fn))) {
458 } else if (state == DESCRIPTION) {
460 /* Try to parse Red Hat style description
463 size_t k = strlen(t);
471 assert(u->meta.description);
472 if (asprintf(&d, "%s %s", u->meta.description, strstrip(t)) < 0) {
477 free(u->meta.description);
478 u->meta.description = d;
480 } else if (state == LSB || state == LSB_DESCRIPTION) {
482 if (startswith(t, "Provides:")) {
488 FOREACH_WORD(w, z, t+9, i) {
491 if (!(n = strndup(w, z))) {
496 r = sysv_translate_facility(n, &m);
505 if (unit_name_to_type(m) == UNIT_SERVICE)
506 r = unit_add_name(u, m);
508 if ((r = unit_add_dependency_by_name_inverse(u, UNIT_REQUIRES, m, NULL, true)) >= 0)
509 r = unit_add_dependency_by_name(u, UNIT_BEFORE, m, NULL, true);
518 } else if (startswith(t, "Required-Start:") ||
519 startswith(t, "Should-Start:")) {
525 FOREACH_WORD(w, z, strchr(t, ':')+1, i) {
528 if (!(n = strndup(w, z))) {
533 r = sysv_translate_facility(n, &m);
542 r = unit_add_dependency_by_name(u, UNIT_AFTER, m, NULL, true);
548 } else if (startswith(t, "Default-Start:")) {
553 k = delete_chars(t+14, WHITESPACE "-");
556 if (!(d = strdup(k))) {
561 free(s->sysv_runlevels);
562 s->sysv_runlevels = d;
565 } else if (startswith(t, "Description:")) {
568 state = LSB_DESCRIPTION;
570 if (!(d = strdup(strstrip(t+12)))) {
575 free(u->meta.description);
576 u->meta.description = d;
578 } else if (startswith(t, "Short-Description:") &&
579 !u->meta.description) {
582 /* We use the short description only
583 * if no long description is set. */
587 if (!(d = strdup(strstrip(t+18)))) {
592 u->meta.description = d;
594 } else if (state == LSB_DESCRIPTION) {
596 if (startswith(l, "#\t") || startswith(l, "# ")) {
599 assert(u->meta.description);
600 if (asprintf(&d, "%s %s", u->meta.description, t) < 0) {
605 free(u->meta.description);
606 u->meta.description = d;
613 if ((r = sysv_exec_commands(s)) < 0)
616 if (!s->sysv_runlevels || chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
617 /* If there a runlevels configured for this service
618 * but none of the standard ones, then we assume this
619 * is some special kind of service (which might be
620 * needed for early boot) and don't create any links
623 if ((r = unit_add_dependency_by_name(u, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0 ||
624 (r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
628 /* Don't timeout special services during boot (like fsck) */
631 /* Special setting for all SysV services */
632 s->valid_no_process = true;
633 s->kill_mode = KILL_PROCESS_GROUP;
635 u->meta.load_state = UNIT_LOADED;
646 static int service_load_sysv_name(Service *s, const char *name) {
652 STRV_FOREACH(p, UNIT(s)->meta.manager->sysvinit_path) {
656 if (asprintf(&path, "%s/%s", *p, name) < 0)
659 assert(endswith(path, ".service"));
660 path[strlen(path)-8] = 0;
662 r = service_load_sysv_path(s, path);
664 if (r >= 0 && UNIT(s)->meta.load_state == UNIT_STUB) {
665 /* Try Debian style .sh source'able init scripts */
667 r = service_load_sysv_path(s, path);
672 if (r >= 0 && UNIT(s)->meta.load_state == UNIT_STUB) {
673 /* Try Suse style boot.xxxx init scripts */
675 if (asprintf(&path, "%s/boot.%s", *p, name) < 0)
678 path[strlen(path)-8] = 0;
679 r = service_load_sysv_path(s, path);
686 if ((UNIT(s)->meta.load_state != UNIT_STUB))
693 static int service_load_sysv(Service *s) {
700 /* Load service data from SysV init scripts, preferably with
703 if (strv_isempty(UNIT(s)->meta.manager->sysvinit_path))
706 if ((t = UNIT(s)->meta.id))
707 if ((r = service_load_sysv_name(s, t)) < 0)
710 if (UNIT(s)->meta.load_state == UNIT_STUB)
711 SET_FOREACH(t, UNIT(s)->meta.names, i) {
712 if (t == UNIT(s)->meta.id)
715 if ((r == service_load_sysv_name(s, t)) < 0)
718 if (UNIT(s)->meta.load_state != UNIT_STUB)
725 static int service_add_bus_name(Service *s) {
732 if (asprintf(&n, "dbus-%s.service", s->bus_name) < 0)
735 r = unit_merge_by_name(UNIT(s), n);
741 static int service_verify(Service *s) {
744 if (UNIT(s)->meta.load_state != UNIT_LOADED)
747 if (!s->exec_command[SERVICE_EXEC_START]) {
748 log_error("%s lacks ExecStart setting. Refusing.", UNIT(s)->meta.id);
752 if (s->type == SERVICE_DBUS && !s->bus_name) {
753 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s)->meta.id);
760 static int service_load(Unit *u) {
762 Service *s = SERVICE(u);
766 /* Load a .service file */
767 if ((r = unit_load_fragment(u)) < 0)
770 /* Load a classic init script as a fallback, if we couldn't find anything */
771 if (u->meta.load_state == UNIT_STUB)
772 if ((r = service_load_sysv(s)) < 0)
775 /* Still nothing found? Then let's give up */
776 if (u->meta.load_state == UNIT_STUB)
779 /* We were able to load something, then let's add in the
780 * dropin directories. */
781 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
784 /* This is a new unit? Then let's add in some extras */
785 if (u->meta.load_state == UNIT_LOADED) {
786 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
789 if ((r = unit_add_default_cgroup(u)) < 0)
792 if ((r = sysv_chkconfig_order(s)) < 0)
796 if ((r = service_add_bus_name(s)) < 0)
799 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
804 return service_verify(s);
807 static void service_dump(Unit *u, FILE *f, const char *prefix) {
809 ServiceExecCommand c;
810 Service *s = SERVICE(u);
816 p2 = strappend(prefix, "\t");
817 prefix2 = p2 ? p2 : prefix;
820 "%sService State: %s\n"
821 "%sPermissionsStartOnly: %s\n"
822 "%sRootDirectoryStartOnly: %s\n"
823 "%sValidNoProcess: %s\n"
826 prefix, service_state_to_string(s->state),
827 prefix, yes_no(s->permissions_start_only),
828 prefix, yes_no(s->root_directory_start_only),
829 prefix, yes_no(s->valid_no_process),
830 prefix, kill_mode_to_string(s->kill_mode),
831 prefix, service_type_to_string(s->type));
833 if (s->control_pid > 0)
835 "%sControl PID: %llu\n",
836 prefix, (unsigned long long) s->control_pid);
840 "%sMain PID: %llu\n",
841 prefix, (unsigned long long) s->main_pid);
846 prefix, s->pid_file);
851 "%sBus Name Good: %s\n",
853 prefix, yes_no(s->bus_name_good));
855 exec_context_dump(&s->exec_context, f, prefix);
857 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
859 if (!s->exec_command[c])
862 fprintf(f, "%s-> %s:\n",
863 prefix, service_exec_command_to_string(c));
865 exec_command_dump_list(s->exec_command[c], f, prefix2);
870 "%sSysV Init Script Path: %s\n"
871 "%sSysV Init Script has LSB Header: %s\n",
872 prefix, s->sysv_path,
873 prefix, yes_no(s->sysv_has_lsb));
875 if (s->sysv_start_priority >= 0)
877 "%sSysVStartPriority: %i\n",
878 prefix, s->sysv_start_priority);
880 if (s->sysv_runlevels)
881 fprintf(f, "%sSysVRunLevels: %s\n",
882 prefix, s->sysv_runlevels);
887 static int service_load_pid_file(Service *s) {
894 if (s->main_pid_known)
897 assert(s->main_pid <= 0);
902 if ((r = read_one_line_file(s->pid_file, &k)) < 0)
905 if ((r = safe_atolu(k, &p)) < 0) {
910 if ((unsigned long) (pid_t) p != p)
913 if (kill((pid_t) p, 0) < 0 && errno != EPERM) {
914 log_warning("PID %llu read from file %s does not exist. Your service or init script might be broken.",
915 (unsigned long long) p, s->pid_file);
919 if ((r = unit_watch_pid(UNIT(s), (pid_t) p)) < 0)
920 /* FIXME: we need to do something here */
923 s->main_pid = (pid_t) p;
924 s->main_pid_known = true;
929 static int service_get_sockets(Service *s, Set **_set) {
938 /* Collects all Socket objects that belong to this
939 * service. Note that a service might have multiple sockets
940 * via multiple names. */
942 if (!(set = set_new(NULL, NULL)))
945 SET_FOREACH(t, UNIT(s)->meta.names, i) {
949 /* Look for all socket objects that go by any of our
950 * units and collect their fds */
952 if (!(k = unit_name_change_suffix(t, ".socket"))) {
957 p = manager_get_unit(UNIT(s)->meta.manager, k);
963 if ((r = set_put(set, p)) < 0)
975 static int service_notify_sockets_dead(Service *s) {
983 /* Notifies all our sockets when we die */
984 if ((r = service_get_sockets(s, &set)) < 0)
987 SET_FOREACH(sock, set, i)
988 socket_notify_service_dead(sock);
995 static void service_set_state(Service *s, ServiceState state) {
996 ServiceState old_state;
999 old_state = s->state;
1002 if (state != SERVICE_START_PRE &&
1003 state != SERVICE_START &&
1004 state != SERVICE_START_POST &&
1005 state != SERVICE_RELOAD &&
1006 state != SERVICE_STOP &&
1007 state != SERVICE_STOP_SIGTERM &&
1008 state != SERVICE_STOP_SIGKILL &&
1009 state != SERVICE_STOP_POST &&
1010 state != SERVICE_FINAL_SIGTERM &&
1011 state != SERVICE_FINAL_SIGKILL &&
1012 state != SERVICE_AUTO_RESTART)
1013 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1015 if (state != SERVICE_START &&
1016 state != SERVICE_START_POST &&
1017 state != SERVICE_RUNNING &&
1018 state != SERVICE_RELOAD &&
1019 state != SERVICE_STOP &&
1020 state != SERVICE_STOP_SIGTERM &&
1021 state != SERVICE_STOP_SIGKILL)
1022 service_unwatch_main_pid(s);
1024 if (state != SERVICE_START_PRE &&
1025 state != SERVICE_START &&
1026 state != SERVICE_START_POST &&
1027 state != SERVICE_RELOAD &&
1028 state != SERVICE_STOP &&
1029 state != SERVICE_STOP_SIGTERM &&
1030 state != SERVICE_STOP_SIGKILL &&
1031 state != SERVICE_STOP_POST &&
1032 state != SERVICE_FINAL_SIGTERM &&
1033 state != SERVICE_FINAL_SIGKILL) {
1034 service_unwatch_control_pid(s);
1035 s->control_command = NULL;
1036 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1039 if (state == SERVICE_DEAD ||
1040 state == SERVICE_STOP ||
1041 state == SERVICE_STOP_SIGTERM ||
1042 state == SERVICE_STOP_SIGKILL ||
1043 state == SERVICE_STOP_POST ||
1044 state == SERVICE_FINAL_SIGTERM ||
1045 state == SERVICE_FINAL_SIGKILL ||
1046 state == SERVICE_MAINTAINANCE ||
1047 state == SERVICE_AUTO_RESTART)
1048 service_notify_sockets_dead(s);
1050 if (state != SERVICE_START_PRE &&
1051 state != SERVICE_START &&
1052 !(state == SERVICE_DEAD && UNIT(s)->meta.job))
1053 service_close_socket_fd(s);
1055 if (old_state != state)
1056 log_debug("%s changed %s -> %s", UNIT(s)->meta.id, service_state_to_string(old_state), service_state_to_string(state));
1058 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
1061 static int service_coldplug(Unit *u) {
1062 Service *s = SERVICE(u);
1066 assert(s->state == SERVICE_DEAD);
1068 if (s->deserialized_state != s->state) {
1070 if (s->deserialized_state == SERVICE_START_PRE ||
1071 s->deserialized_state == SERVICE_START ||
1072 s->deserialized_state == SERVICE_START_POST ||
1073 s->deserialized_state == SERVICE_RELOAD ||
1074 s->deserialized_state == SERVICE_STOP ||
1075 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1076 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1077 s->deserialized_state == SERVICE_STOP_POST ||
1078 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1079 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
1080 s->deserialized_state == SERVICE_AUTO_RESTART) {
1082 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1085 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1087 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1092 if ((s->deserialized_state == SERVICE_START &&
1093 (s->type == SERVICE_FORKING ||
1094 s->type == SERVICE_DBUS)) ||
1095 s->deserialized_state == SERVICE_START_POST ||
1096 s->deserialized_state == SERVICE_RUNNING ||
1097 s->deserialized_state == SERVICE_RELOAD ||
1098 s->deserialized_state == SERVICE_STOP ||
1099 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1100 s->deserialized_state == SERVICE_STOP_SIGKILL)
1101 if (s->main_pid > 0)
1102 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1105 if (s->deserialized_state == SERVICE_START_PRE ||
1106 s->deserialized_state == SERVICE_START ||
1107 s->deserialized_state == SERVICE_START_POST ||
1108 s->deserialized_state == SERVICE_RELOAD ||
1109 s->deserialized_state == SERVICE_STOP ||
1110 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1111 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1112 s->deserialized_state == SERVICE_STOP_POST ||
1113 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1114 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1115 if (s->control_pid > 0)
1116 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1119 service_set_state(s, s->deserialized_state);
1125 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1129 unsigned rn_fds = 0;
1137 if ((r = service_get_sockets(s, &set)) < 0)
1140 SET_FOREACH(sock, set, i) {
1144 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
1156 if (!(t = new(int, rn_fds+cn_fds))) {
1162 memcpy(t, rfds, rn_fds);
1163 memcpy(t+rn_fds, cfds, cn_fds);
1168 rn_fds = rn_fds+cn_fds;
1186 static int service_spawn(
1191 bool apply_permissions,
1206 if (s->socket_fd >= 0) {
1207 fds = &s->socket_fd;
1209 } else if ((r = service_collect_fds(s, &fds, &n_fds)) < 0)
1213 if (timeout && s->timeout_usec) {
1214 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1217 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1219 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1228 s->meta.manager->environment,
1231 UNIT(s)->meta.manager->confirm_spawn,
1232 UNIT(s)->meta.cgroup_bondings,
1240 if (s->socket_fd >= 0)
1241 service_close_socket_fd(s);
1246 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1247 /* FIXME: we need to do something here */
1258 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1263 static int main_pid_good(Service *s) {
1266 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1269 /* If we know the pid file, then lets just check if it is
1271 if (s->main_pid_known)
1272 return s->main_pid > 0;
1274 /* We don't know the pid */
1278 static int control_pid_good(Service *s) {
1281 return s->control_pid > 0;
1284 static int cgroup_good(Service *s) {
1289 if (s->valid_no_process)
1292 if ((r = cgroup_bonding_is_empty_list(UNIT(s)->meta.cgroup_bondings)) < 0)
1298 static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1305 if (allow_restart &&
1307 (s->restart == SERVICE_RESTART_ALWAYS ||
1308 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
1310 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
1313 service_set_state(s, SERVICE_AUTO_RESTART);
1315 service_set_state(s, s->failure ? SERVICE_MAINTAINANCE : SERVICE_DEAD);
1320 log_warning("%s failed to run install restart timer: %s", UNIT(s)->meta.id, strerror(-r));
1321 service_enter_dead(s, false, false);
1324 static void service_enter_signal(Service *s, ServiceState state, bool success);
1326 static void service_enter_stop_post(Service *s, bool success) {
1333 service_unwatch_control_pid(s);
1335 s->control_command_id = SERVICE_EXEC_STOP_POST;
1336 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
1337 if ((r = service_spawn(s,
1341 !s->permissions_start_only,
1342 !s->root_directory_start_only,
1343 &s->control_pid)) < 0)
1347 service_set_state(s, SERVICE_STOP_POST);
1349 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
1354 log_warning("%s failed to run stop-post executable: %s", UNIT(s)->meta.id, strerror(-r));
1355 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1358 static void service_enter_signal(Service *s, ServiceState state, bool success) {
1367 if (s->kill_mode != KILL_NONE) {
1368 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
1370 if (s->kill_mode == KILL_CONTROL_GROUP) {
1372 if ((r = cgroup_bonding_kill_list(UNIT(s)->meta.cgroup_bondings, sig)) < 0) {
1373 if (r != -EAGAIN && r != -ESRCH)
1382 if (s->main_pid > 0) {
1383 if (kill(s->kill_mode == KILL_PROCESS ? s->main_pid : -s->main_pid, sig) < 0 && errno != ESRCH)
1389 if (s->control_pid > 0) {
1390 if (kill(s->kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH)
1401 if (sent && (s->main_pid > 0 || s->control_pid > 0)) {
1402 if (s->timeout_usec > 0)
1403 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1406 service_set_state(s, state);
1407 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1408 service_enter_stop_post(s, true);
1410 service_enter_dead(s, true, true);
1415 log_warning("%s failed to kill processes: %s", UNIT(s)->meta.id, strerror(-r));
1417 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1418 service_enter_stop_post(s, false);
1420 service_enter_dead(s, false, true);
1423 static void service_enter_stop(Service *s, bool success) {
1430 service_unwatch_control_pid(s);
1432 s->control_command_id = SERVICE_EXEC_STOP;
1433 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
1434 if ((r = service_spawn(s,
1438 !s->permissions_start_only,
1439 !s->root_directory_start_only,
1440 &s->control_pid)) < 0)
1443 service_set_state(s, SERVICE_STOP);
1445 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1450 log_warning("%s failed to run stop executable: %s", UNIT(s)->meta.id, strerror(-r));
1451 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1454 static void service_enter_running(Service *s, bool success) {
1460 if (main_pid_good(s) != 0 &&
1461 cgroup_good(s) != 0 &&
1462 (s->bus_name_good || s->type != SERVICE_DBUS))
1463 service_set_state(s, SERVICE_RUNNING);
1464 else if (s->valid_no_process)
1465 service_set_state(s, SERVICE_EXITED);
1467 service_enter_stop(s, true);
1470 static void service_enter_start_post(Service *s) {
1474 service_unwatch_control_pid(s);
1476 s->control_command_id = SERVICE_EXEC_START_POST;
1477 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
1478 if ((r = service_spawn(s,
1482 !s->permissions_start_only,
1483 !s->root_directory_start_only,
1484 &s->control_pid)) < 0)
1488 service_set_state(s, SERVICE_START_POST);
1490 service_enter_running(s, true);
1495 log_warning("%s failed to run start-post executable: %s", UNIT(s)->meta.id, strerror(-r));
1496 service_enter_stop(s, false);
1499 static void service_enter_start(Service *s) {
1505 assert(s->exec_command[SERVICE_EXEC_START]);
1506 assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
1508 if (s->type == SERVICE_FORKING)
1509 service_unwatch_control_pid(s);
1511 service_unwatch_main_pid(s);
1513 if ((r = service_spawn(s,
1514 s->exec_command[SERVICE_EXEC_START],
1515 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS,
1522 if (s->type == SERVICE_SIMPLE) {
1523 /* For simple services we immediately start
1524 * the START_POST binaries. */
1527 s->main_pid_known = true;
1529 service_enter_start_post(s);
1531 } else if (s->type == SERVICE_FORKING) {
1533 /* For forking services we wait until the start
1534 * process exited. */
1536 s->control_pid = pid;
1538 s->control_command_id = SERVICE_EXEC_START;
1539 s->control_command = s->exec_command[SERVICE_EXEC_START];
1540 service_set_state(s, SERVICE_START);
1542 } else if (s->type == SERVICE_FINISH ||
1543 s->type == SERVICE_DBUS) {
1545 /* For finishing services we wait until the start
1546 * process exited, too, but it is our main process. */
1548 /* For D-Bus services we know the main pid right away,
1549 * but wait for the bus name to appear on the bus. */
1552 s->main_pid_known = true;
1554 service_set_state(s, SERVICE_START);
1556 assert_not_reached("Unknown service type");
1561 log_warning("%s failed to run start exectuable: %s", UNIT(s)->meta.id, strerror(-r));
1562 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1565 static void service_enter_start_pre(Service *s) {
1570 service_unwatch_control_pid(s);
1572 s->control_command_id = SERVICE_EXEC_START_PRE;
1573 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
1574 if ((r = service_spawn(s,
1578 !s->permissions_start_only,
1579 !s->root_directory_start_only,
1580 &s->control_pid)) < 0)
1583 service_set_state(s, SERVICE_START_PRE);
1585 service_enter_start(s);
1590 log_warning("%s failed to run start-pre executable: %s", UNIT(s)->meta.id, strerror(-r));
1591 service_enter_dead(s, false, true);
1594 static void service_enter_restart(Service *s) {
1598 service_enter_dead(s, true, false);
1600 if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL)) < 0)
1603 log_debug("%s scheduled restart job.", UNIT(s)->meta.id);
1608 log_warning("%s failed to schedule restart job: %s", UNIT(s)->meta.id, strerror(-r));
1609 service_enter_dead(s, false, false);
1612 static void service_enter_reload(Service *s) {
1617 service_unwatch_control_pid(s);
1619 s->control_command_id = SERVICE_EXEC_RELOAD;
1620 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
1621 if ((r = service_spawn(s,
1625 !s->permissions_start_only,
1626 !s->root_directory_start_only,
1627 &s->control_pid)) < 0)
1630 service_set_state(s, SERVICE_RELOAD);
1632 service_enter_running(s, true);
1637 log_warning("%s failed to run reload executable: %s", UNIT(s)->meta.id, strerror(-r));
1638 service_enter_stop(s, false);
1641 static void service_run_next(Service *s, bool success) {
1645 assert(s->control_command);
1646 assert(s->control_command->command_next);
1651 s->control_command = s->control_command->command_next;
1653 service_unwatch_control_pid(s);
1655 if ((r = service_spawn(s,
1659 !s->permissions_start_only,
1660 !s->root_directory_start_only,
1661 &s->control_pid)) < 0)
1667 log_warning("%s failed to run spawn next executable: %s", UNIT(s)->meta.id, strerror(-r));
1669 if (s->state == SERVICE_START_PRE)
1670 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1671 else if (s->state == SERVICE_STOP)
1672 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1673 else if (s->state == SERVICE_STOP_POST)
1674 service_enter_dead(s, false, true);
1676 service_enter_stop(s, false);
1679 static int service_start(Unit *u) {
1680 Service *s = SERVICE(u);
1684 /* We cannot fulfill this request right now, try again later
1686 if (s->state == SERVICE_STOP ||
1687 s->state == SERVICE_STOP_SIGTERM ||
1688 s->state == SERVICE_STOP_SIGKILL ||
1689 s->state == SERVICE_STOP_POST ||
1690 s->state == SERVICE_FINAL_SIGTERM ||
1691 s->state == SERVICE_FINAL_SIGKILL)
1694 /* Already on it! */
1695 if (s->state == SERVICE_START_PRE ||
1696 s->state == SERVICE_START ||
1697 s->state == SERVICE_START_POST)
1700 assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTAINANCE || s->state == SERVICE_AUTO_RESTART);
1702 /* Make sure we don't enter a busy loop of some kind. */
1703 if (!ratelimit_test(&s->ratelimit)) {
1704 log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
1709 s->main_pid_known = false;
1710 s->allow_restart = true;
1712 service_enter_start_pre(s);
1716 static int service_stop(Unit *u) {
1717 Service *s = SERVICE(u);
1721 /* Cannot do this now */
1722 if (s->state == SERVICE_START_PRE ||
1723 s->state == SERVICE_START ||
1724 s->state == SERVICE_START_POST ||
1725 s->state == SERVICE_RELOAD)
1729 if (s->state == SERVICE_STOP ||
1730 s->state == SERVICE_STOP_SIGTERM ||
1731 s->state == SERVICE_STOP_SIGKILL ||
1732 s->state == SERVICE_STOP_POST ||
1733 s->state == SERVICE_FINAL_SIGTERM ||
1734 s->state == SERVICE_FINAL_SIGKILL)
1737 if (s->state == SERVICE_AUTO_RESTART) {
1738 service_set_state(s, SERVICE_DEAD);
1742 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
1744 /* This is a user request, so don't do restarts on this
1746 s->allow_restart = false;
1748 service_enter_stop(s, true);
1752 static int service_reload(Unit *u) {
1753 Service *s = SERVICE(u);
1757 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
1759 service_enter_reload(s);
1763 static bool service_can_reload(Unit *u) {
1764 Service *s = SERVICE(u);
1768 return !!s->exec_command[SERVICE_EXEC_RELOAD];
1771 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
1772 Service *s = SERVICE(u);
1778 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
1779 unit_serialize_item(u, f, "failure", yes_no(s->failure));
1781 if (s->control_pid > 0)
1782 unit_serialize_item_format(u, f, "control-pid", "%u", (unsigned) (s->control_pid));
1784 if (s->main_pid > 0)
1785 unit_serialize_item_format(u, f, "main-pid", "%u", (unsigned) (s->main_pid));
1787 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
1789 /* There's a minor uncleanliness here: if there are multiple
1790 * commands attached here, we will start from the first one
1792 if (s->control_command_id >= 0)
1793 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
1795 if (s->socket_fd >= 0) {
1798 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
1801 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
1807 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
1808 Service *s = SERVICE(u);
1816 if (streq(key, "state")) {
1819 if ((state = service_state_from_string(value)) < 0)
1820 log_debug("Failed to parse state value %s", value);
1822 s->deserialized_state = state;
1823 } else if (streq(key, "failure")) {
1826 if ((b = parse_boolean(value)) < 0)
1827 log_debug("Failed to parse failure value %s", value);
1829 s->failure = b || s->failure;
1830 } else if (streq(key, "control-pid")) {
1833 if ((r = safe_atou(value, &pid)) < 0 || pid <= 0)
1834 log_debug("Failed to parse control-pid value %s", value);
1836 s->control_pid = (pid_t) pid;
1837 } else if (streq(key, "main-pid")) {
1840 if ((r = safe_atou(value, &pid)) < 0 || pid <= 0)
1841 log_debug("Failed to parse main-pid value %s", value);
1843 s->main_pid = (pid_t) pid;
1844 } else if (streq(key, "main-pid-known")) {
1847 if ((b = parse_boolean(value)) < 0)
1848 log_debug("Failed to parse main-pid-known value %s", value);
1850 s->main_pid_known = b;
1851 } else if (streq(key, "control-command")) {
1852 ServiceExecCommand id;
1854 if ((id = service_exec_command_from_string(value)) < 0)
1855 log_debug("Failed to parse exec-command value %s", value);
1857 s->control_command_id = id;
1858 s->control_command = s->exec_command[id];
1860 } else if (streq(key, "socket-fd")) {
1863 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
1864 log_debug("Failed to parse socket-fd value %s", value);
1867 if (s->socket_fd >= 0)
1868 close_nointr_nofail(s->socket_fd);
1869 s->socket_fd = fdset_remove(fds, fd);
1872 log_debug("Unknown serialization key '%s'", key);
1877 static UnitActiveState service_active_state(Unit *u) {
1880 return state_translation_table[SERVICE(u)->state];
1883 static const char *service_sub_state_to_string(Unit *u) {
1886 return service_state_to_string(SERVICE(u)->state);
1889 static bool service_check_gc(Unit *u) {
1890 Service *s = SERVICE(u);
1894 return !!s->sysv_path;
1897 static bool service_check_snapshot(Unit *u) {
1898 Service *s = SERVICE(u);
1902 return !s->got_socket_fd;
1905 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
1906 Service *s = SERVICE(u);
1912 success = is_clean_exit(code, status);
1913 s->failure = s->failure || !success;
1915 if (s->main_pid == pid) {
1917 exec_status_fill(&s->main_exec_status, pid, code, status);
1920 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_FINISH) {
1921 assert(s->exec_command[SERVICE_EXEC_START]);
1922 s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
1925 log_debug("%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status);
1927 /* The service exited, so the service is officially
1932 case SERVICE_START_POST:
1933 case SERVICE_RELOAD:
1935 /* Need to wait until the operation is
1940 assert(s->type == SERVICE_FINISH);
1942 /* This was our main goal, so let's go on */
1944 service_enter_start_post(s);
1946 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1949 case SERVICE_RUNNING:
1950 service_enter_running(s, success);
1953 case SERVICE_STOP_SIGTERM:
1954 case SERVICE_STOP_SIGKILL:
1956 if (!control_pid_good(s))
1957 service_enter_stop_post(s, success);
1959 /* If there is still a control process, wait for that first */
1963 assert_not_reached("Uh, main process died at wrong time.");
1966 } else if (s->control_pid == pid) {
1968 if (s->control_command)
1969 exec_status_fill(&s->control_command->exec_status, pid, code, status);
1973 log_debug("%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
1975 /* If we are shutting things down anyway we
1976 * don't care about failing commands. */
1978 if (s->control_command && s->control_command->command_next && success) {
1980 /* There is another command to *
1981 * execute, so let's do that. */
1983 log_debug("%s running next command for state %s", u->meta.id, service_state_to_string(s->state));
1984 service_run_next(s, success);
1987 /* No further commands for this step, so let's
1988 * figure out what to do next */
1990 s->control_command = NULL;
1991 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1993 log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state));
1997 case SERVICE_START_PRE:
1999 service_enter_start(s);
2001 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2005 assert(s->type == SERVICE_FORKING);
2007 /* Let's try to load the pid
2008 * file here if we can. We
2009 * ignore the return value,
2010 * since the PID file might
2011 * actually be created by a
2012 * START_POST script */
2016 service_load_pid_file(s);
2018 service_enter_start_post(s);
2020 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2024 case SERVICE_START_POST:
2025 if (success && s->pid_file && !s->main_pid_known) {
2028 /* Hmm, let's see if we can
2029 * load the pid now after the
2030 * start-post scripts got
2033 if ((r = service_load_pid_file(s)) < 0)
2034 log_warning("%s: failed to load PID file %s: %s", UNIT(s)->meta.id, s->pid_file, strerror(-r));
2039 case SERVICE_RELOAD:
2041 service_enter_running(s, true);
2043 service_enter_stop(s, false);
2048 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
2051 case SERVICE_STOP_SIGTERM:
2052 case SERVICE_STOP_SIGKILL:
2053 if (main_pid_good(s) <= 0)
2054 service_enter_stop_post(s, success);
2056 /* If there is still a service
2057 * process around, wait until
2058 * that one quit, too */
2061 case SERVICE_STOP_POST:
2062 case SERVICE_FINAL_SIGTERM:
2063 case SERVICE_FINAL_SIGKILL:
2064 service_enter_dead(s, success, true);
2068 assert_not_reached("Uh, control process died at wrong time.");
2072 assert_not_reached("Got SIGCHLD for unkown PID");
2075 static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
2076 Service *s = SERVICE(u);
2079 assert(elapsed == 1);
2081 assert(w == &s->timer_watch);
2085 case SERVICE_START_PRE:
2087 log_warning("%s operation timed out. Terminating.", u->meta.id);
2088 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2091 case SERVICE_START_POST:
2092 case SERVICE_RELOAD:
2093 log_warning("%s operation timed out. Stopping.", u->meta.id);
2094 service_enter_stop(s, false);
2098 log_warning("%s stopping timed out. Terminating.", u->meta.id);
2099 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2102 case SERVICE_STOP_SIGTERM:
2103 log_warning("%s stopping timed out. Killing.", u->meta.id);
2104 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2107 case SERVICE_STOP_SIGKILL:
2108 /* Uh, wie sent a SIGKILL and it is still not gone?
2109 * Must be something we cannot kill, so let's just be
2110 * weirded out and continue */
2112 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
2113 service_enter_stop_post(s, false);
2116 case SERVICE_STOP_POST:
2117 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
2118 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2121 case SERVICE_FINAL_SIGTERM:
2122 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
2123 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
2126 case SERVICE_FINAL_SIGKILL:
2127 log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", u->meta.id);
2128 service_enter_dead(s, false, true);
2131 case SERVICE_AUTO_RESTART:
2132 log_debug("%s holdoff time over, scheduling restart.", u->meta.id);
2133 service_enter_restart(s);
2137 assert_not_reached("Timeout at wrong time.");
2141 static void service_cgroup_notify_event(Unit *u) {
2142 Service *s = SERVICE(u);
2146 log_debug("%s: cgroup is empty", u->meta.id);
2150 /* Waiting for SIGCHLD is usually more interesting,
2151 * because it includes return codes/signals. Which is
2152 * why we ignore the cgroup events for most cases,
2153 * except when we don't know pid which to expect the
2156 case SERVICE_RUNNING:
2157 service_enter_running(s, true);
2165 static int service_enumerate(Manager *m) {
2169 char *path = NULL, *fpath = NULL, *name = NULL;
2174 STRV_FOREACH(p, m->sysvrcnd_path)
2175 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
2180 if (asprintf(&path, "%s/%s", *p, rcnd_table[i].path) < 0) {
2188 if (!(d = opendir(path))) {
2189 if (errno != ENOENT)
2190 log_warning("opendir() failed on %s: %s", path, strerror(errno));
2195 while ((de = readdir(d))) {
2199 if (ignore_file(de->d_name))
2202 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
2205 if (strlen(de->d_name) < 4)
2208 a = undecchar(de->d_name[1]);
2209 b = undecchar(de->d_name[2]);
2216 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i].path, de->d_name) < 0) {
2221 if (access(fpath, X_OK) < 0) {
2223 if (errno != ENOENT)
2224 log_warning("access() failed on %s: %s", fpath, strerror(errno));
2230 if (!(name = sysv_translate_name(de->d_name + 3))) {
2235 if ((r = manager_load_unit_prepare(m, name, NULL, &service)) < 0) {
2236 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
2240 if (de->d_name[0] == 'S' &&
2241 (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_BASIC))
2242 SERVICE(service)->sysv_start_priority =
2243 MAX(a*10 + b, SERVICE(service)->sysv_start_priority);
2245 manager_dispatch_load_queue(m);
2246 service = unit_follow_merge(service);
2248 if (de->d_name[0] == 'S') {
2249 Unit *runlevel_target;
2251 if ((r = manager_load_unit(m, rcnd_table[i].target, NULL, &runlevel_target)) < 0)
2254 if ((r = unit_add_dependency(runlevel_target, UNIT_WANTS, service, true)) < 0)
2257 if ((r = unit_add_dependency(service, UNIT_BEFORE, runlevel_target, true)) < 0)
2260 } else if (de->d_name[0] == 'K' && rcnd_table[i].type == RUNLEVEL_DOWN) {
2261 Unit *shutdown_target;
2263 /* We honour K links only for
2264 * halt/reboot. For the normal
2265 * runlevels we assume the
2267 * implicitly added by the
2268 * core logic. Also, we don't
2269 * really distuingish here
2270 * between the runlevels 0 and
2271 * 6 and just add them to the
2272 * special shutdown target. */
2274 if ((r = manager_load_unit(m, SPECIAL_SHUTDOWN_TARGET, NULL, &shutdown_target)) < 0)
2277 if ((r = unit_add_dependency(service, UNIT_CONFLICTS, shutdown_target, true)) < 0)
2280 if ((r = unit_add_dependency(service, UNIT_BEFORE, shutdown_target, true)) < 0)
2299 static void service_bus_name_owner_change(
2302 const char *old_owner,
2303 const char *new_owner) {
2305 Service *s = SERVICE(u);
2310 assert(streq(s->bus_name, name));
2311 assert(old_owner || new_owner);
2313 if (old_owner && new_owner)
2314 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->meta.id, name, old_owner, new_owner);
2316 log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner);
2318 log_debug("%s's D-Bus name %s now registered by %s", u->meta.id, name, new_owner);
2320 s->bus_name_good = !!new_owner;
2322 if (s->type == SERVICE_DBUS) {
2324 /* service_enter_running() will figure out what to
2326 if (s->state == SERVICE_RUNNING)
2327 service_enter_running(s, true);
2328 else if (s->state == SERVICE_START && new_owner)
2329 service_enter_start_post(s);
2331 } else if (new_owner &&
2333 (s->state == SERVICE_START ||
2334 s->state == SERVICE_START_POST ||
2335 s->state == SERVICE_RUNNING ||
2336 s->state == SERVICE_RELOAD)) {
2338 /* Try to acquire PID from bus service */
2339 log_debug("Trying to acquire PID from D-Bus name...");
2341 bus_query_pid(u->meta.manager, name);
2345 static void service_bus_query_pid_done(
2350 Service *s = SERVICE(u);
2355 log_debug("%s's D-Bus name %s is now owned by process %u", u->meta.id, name, (unsigned) pid);
2357 if (s->main_pid <= 0 &&
2358 (s->state == SERVICE_START ||
2359 s->state == SERVICE_START_POST ||
2360 s->state == SERVICE_RUNNING ||
2361 s->state == SERVICE_RELOAD))
2365 int service_set_socket_fd(Service *s, int fd) {
2369 /* This is called by the socket code when instantiating a new
2370 * service for a stream socket and the socket needs to be
2373 if (UNIT(s)->meta.load_state != UNIT_LOADED)
2376 if (s->socket_fd >= 0)
2379 if (s->state != SERVICE_DEAD)
2383 s->got_socket_fd = true;
2387 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
2388 [SERVICE_DEAD] = "dead",
2389 [SERVICE_START_PRE] = "start-pre",
2390 [SERVICE_START] = "start",
2391 [SERVICE_START_POST] = "start-post",
2392 [SERVICE_RUNNING] = "running",
2393 [SERVICE_EXITED] = "exited",
2394 [SERVICE_RELOAD] = "reload",
2395 [SERVICE_STOP] = "stop",
2396 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
2397 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
2398 [SERVICE_STOP_POST] = "stop-post",
2399 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
2400 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
2401 [SERVICE_MAINTAINANCE] = "maintainance",
2402 [SERVICE_AUTO_RESTART] = "auto-restart",
2405 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
2407 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
2408 [SERVICE_ONCE] = "once",
2409 [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
2410 [SERVICE_RESTART_ALWAYS] = "restart-always",
2413 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
2415 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
2416 [SERVICE_FORKING] = "forking",
2417 [SERVICE_SIMPLE] = "simple",
2418 [SERVICE_FINISH] = "finish",
2419 [SERVICE_DBUS] = "dbus"
2422 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
2424 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
2425 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
2426 [SERVICE_EXEC_START] = "ExecStart",
2427 [SERVICE_EXEC_START_POST] = "ExecStartPost",
2428 [SERVICE_EXEC_RELOAD] = "ExecReload",
2429 [SERVICE_EXEC_STOP] = "ExecStop",
2430 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
2433 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
2435 const UnitVTable service_vtable = {
2436 .suffix = ".service",
2438 .init = service_init,
2439 .done = service_done,
2440 .load = service_load,
2442 .coldplug = service_coldplug,
2444 .dump = service_dump,
2446 .start = service_start,
2447 .stop = service_stop,
2448 .reload = service_reload,
2450 .can_reload = service_can_reload,
2452 .serialize = service_serialize,
2453 .deserialize_item = service_deserialize_item,
2455 .active_state = service_active_state,
2456 .sub_state_to_string = service_sub_state_to_string,
2458 .check_gc = service_check_gc,
2459 .check_snapshot = service_check_snapshot,
2461 .sigchld_event = service_sigchld_event,
2462 .timer_event = service_timer_event,
2464 .cgroup_notify_empty = service_cgroup_notify_event,
2466 .bus_name_owner_change = service_bus_name_owner_change,
2467 .bus_query_pid_done = service_bus_query_pid_done,
2469 .bus_message_handler = bus_service_message_handler,
2471 .enumerate = service_enumerate