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_fix_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 /* For SysV services log output should go to the console */
636 s->exec_context.std_input = EXEC_INPUT_NULL;
637 s->exec_context.std_output = EXEC_OUTPUT_TTY;
638 s->exec_context.std_error = EXEC_OUTPUT_TTY;
640 u->meta.load_state = UNIT_LOADED;
651 static int service_load_sysv_name(Service *s, const char *name) {
657 STRV_FOREACH(p, UNIT(s)->meta.manager->sysvinit_path) {
661 if (asprintf(&path, "%s/%s", *p, name) < 0)
664 assert(endswith(path, ".service"));
665 path[strlen(path)-8] = 0;
667 r = service_load_sysv_path(s, path);
669 if (r >= 0 && UNIT(s)->meta.load_state == UNIT_STUB) {
670 /* Try Debian style .sh source'able init scripts */
672 r = service_load_sysv_path(s, path);
677 if (r >= 0 && UNIT(s)->meta.load_state == UNIT_STUB) {
678 /* Try Suse style boot.xxxx init scripts */
680 if (asprintf(&path, "%s/boot.%s", *p, name) < 0)
683 path[strlen(path)-8] = 0;
684 r = service_load_sysv_path(s, path);
691 if ((UNIT(s)->meta.load_state != UNIT_STUB))
698 static int service_load_sysv(Service *s) {
705 /* Load service data from SysV init scripts, preferably with
708 if (strv_isempty(UNIT(s)->meta.manager->sysvinit_path))
711 if ((t = UNIT(s)->meta.id))
712 if ((r = service_load_sysv_name(s, t)) < 0)
715 if (UNIT(s)->meta.load_state == UNIT_STUB)
716 SET_FOREACH(t, UNIT(s)->meta.names, i) {
717 if (t == UNIT(s)->meta.id)
720 if ((r == service_load_sysv_name(s, t)) < 0)
723 if (UNIT(s)->meta.load_state != UNIT_STUB)
730 static int service_add_bus_name(Service *s) {
737 if (asprintf(&n, "dbus-%s.service", s->bus_name) < 0)
740 r = unit_merge_by_name(UNIT(s), n);
746 static int service_verify(Service *s) {
749 if (UNIT(s)->meta.load_state != UNIT_LOADED)
752 if (!s->exec_command[SERVICE_EXEC_START]) {
753 log_error("%s lacks ExecStart setting. Refusing.", UNIT(s)->meta.id);
757 if (s->type == SERVICE_DBUS && !s->bus_name) {
758 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s)->meta.id);
765 static int service_load(Unit *u) {
767 Service *s = SERVICE(u);
771 /* Load a .service file */
772 if ((r = unit_load_fragment(u)) < 0)
775 /* Load a classic init script as a fallback, if we couldn't find anything */
776 if (u->meta.load_state == UNIT_STUB)
777 if ((r = service_load_sysv(s)) < 0)
780 /* Still nothing found? Then let's give up */
781 if (u->meta.load_state == UNIT_STUB)
784 /* We were able to load something, then let's add in the
785 * dropin directories. */
786 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
789 /* This is a new unit? Then let's add in some extras */
790 if (u->meta.load_state == UNIT_LOADED) {
791 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
794 if ((r = unit_add_default_cgroup(u)) < 0)
797 if ((r = sysv_fix_order(s)) < 0)
801 if ((r = service_add_bus_name(s)) < 0)
804 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
809 return service_verify(s);
812 static void service_dump(Unit *u, FILE *f, const char *prefix) {
814 ServiceExecCommand c;
815 Service *s = SERVICE(u);
821 p2 = strappend(prefix, "\t");
822 prefix2 = p2 ? p2 : prefix;
825 "%sService State: %s\n"
826 "%sPermissionsStartOnly: %s\n"
827 "%sRootDirectoryStartOnly: %s\n"
828 "%sValidNoProcess: %s\n"
831 prefix, service_state_to_string(s->state),
832 prefix, yes_no(s->permissions_start_only),
833 prefix, yes_no(s->root_directory_start_only),
834 prefix, yes_no(s->valid_no_process),
835 prefix, kill_mode_to_string(s->kill_mode),
836 prefix, service_type_to_string(s->type));
838 if (s->control_pid > 0)
840 "%sControl PID: %llu\n",
841 prefix, (unsigned long long) s->control_pid);
845 "%sMain PID: %llu\n",
846 prefix, (unsigned long long) s->main_pid);
851 prefix, s->pid_file);
856 "%sBus Name Good: %s\n",
858 prefix, yes_no(s->bus_name_good));
860 exec_context_dump(&s->exec_context, f, prefix);
862 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
864 if (!s->exec_command[c])
867 fprintf(f, "%s-> %s:\n",
868 prefix, service_exec_command_to_string(c));
870 exec_command_dump_list(s->exec_command[c], f, prefix2);
875 "%sSysV Init Script Path: %s\n"
876 "%sSysV Init Script has LSB Header: %s\n",
877 prefix, s->sysv_path,
878 prefix, yes_no(s->sysv_has_lsb));
880 if (s->sysv_start_priority >= 0)
882 "%sSysVStartPriority: %i\n",
883 prefix, s->sysv_start_priority);
885 if (s->sysv_runlevels)
886 fprintf(f, "%sSysVRunLevels: %s\n",
887 prefix, s->sysv_runlevels);
892 static int service_load_pid_file(Service *s) {
899 if (s->main_pid_known)
902 assert(s->main_pid <= 0);
907 if ((r = read_one_line_file(s->pid_file, &k)) < 0)
910 if ((r = safe_atolu(k, &p)) < 0) {
915 if ((unsigned long) (pid_t) p != p)
918 if (kill((pid_t) p, 0) < 0 && errno != EPERM) {
919 log_warning("PID %llu read from file %s does not exist. Your service or init script might be broken.",
920 (unsigned long long) p, s->pid_file);
924 if ((r = unit_watch_pid(UNIT(s), (pid_t) p)) < 0)
925 /* FIXME: we need to do something here */
928 s->main_pid = (pid_t) p;
929 s->main_pid_known = true;
934 static int service_get_sockets(Service *s, Set **_set) {
943 /* Collects all Socket objects that belong to this
944 * service. Note that a service might have multiple sockets
945 * via multiple names. */
947 if (!(set = set_new(NULL, NULL)))
950 SET_FOREACH(t, UNIT(s)->meta.names, i) {
954 /* Look for all socket objects that go by any of our
955 * units and collect their fds */
957 if (!(k = unit_name_change_suffix(t, ".socket"))) {
962 p = manager_get_unit(UNIT(s)->meta.manager, k);
968 if ((r = set_put(set, p)) < 0)
980 static int service_notify_sockets_dead(Service *s) {
988 /* Notifies all our sockets when we die */
989 if ((r = service_get_sockets(s, &set)) < 0)
992 SET_FOREACH(sock, set, i)
993 socket_notify_service_dead(sock);
1000 static void service_set_state(Service *s, ServiceState state) {
1001 ServiceState old_state;
1004 old_state = s->state;
1007 if (state != SERVICE_START_PRE &&
1008 state != SERVICE_START &&
1009 state != SERVICE_START_POST &&
1010 state != SERVICE_RELOAD &&
1011 state != SERVICE_STOP &&
1012 state != SERVICE_STOP_SIGTERM &&
1013 state != SERVICE_STOP_SIGKILL &&
1014 state != SERVICE_STOP_POST &&
1015 state != SERVICE_FINAL_SIGTERM &&
1016 state != SERVICE_FINAL_SIGKILL &&
1017 state != SERVICE_AUTO_RESTART)
1018 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1020 if (state != SERVICE_START &&
1021 state != SERVICE_START_POST &&
1022 state != SERVICE_RUNNING &&
1023 state != SERVICE_RELOAD &&
1024 state != SERVICE_STOP &&
1025 state != SERVICE_STOP_SIGTERM &&
1026 state != SERVICE_STOP_SIGKILL)
1027 service_unwatch_main_pid(s);
1029 if (state != SERVICE_START_PRE &&
1030 state != SERVICE_START &&
1031 state != SERVICE_START_POST &&
1032 state != SERVICE_RELOAD &&
1033 state != SERVICE_STOP &&
1034 state != SERVICE_STOP_SIGTERM &&
1035 state != SERVICE_STOP_SIGKILL &&
1036 state != SERVICE_STOP_POST &&
1037 state != SERVICE_FINAL_SIGTERM &&
1038 state != SERVICE_FINAL_SIGKILL) {
1039 service_unwatch_control_pid(s);
1040 s->control_command = NULL;
1041 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1044 if (state == SERVICE_DEAD ||
1045 state == SERVICE_STOP ||
1046 state == SERVICE_STOP_SIGTERM ||
1047 state == SERVICE_STOP_SIGKILL ||
1048 state == SERVICE_STOP_POST ||
1049 state == SERVICE_FINAL_SIGTERM ||
1050 state == SERVICE_FINAL_SIGKILL ||
1051 state == SERVICE_MAINTAINANCE ||
1052 state == SERVICE_AUTO_RESTART)
1053 service_notify_sockets_dead(s);
1055 if (state != SERVICE_START_PRE &&
1056 state != SERVICE_START &&
1057 !(state == SERVICE_DEAD && UNIT(s)->meta.job))
1058 service_close_socket_fd(s);
1060 if (old_state != state)
1061 log_debug("%s changed %s -> %s", UNIT(s)->meta.id, service_state_to_string(old_state), service_state_to_string(state));
1063 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
1066 static int service_coldplug(Unit *u) {
1067 Service *s = SERVICE(u);
1071 assert(s->state == SERVICE_DEAD);
1073 if (s->deserialized_state != s->state) {
1075 if (s->deserialized_state == SERVICE_START_PRE ||
1076 s->deserialized_state == SERVICE_START ||
1077 s->deserialized_state == SERVICE_START_POST ||
1078 s->deserialized_state == SERVICE_RELOAD ||
1079 s->deserialized_state == SERVICE_STOP ||
1080 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1081 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1082 s->deserialized_state == SERVICE_STOP_POST ||
1083 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1084 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
1085 s->deserialized_state == SERVICE_AUTO_RESTART) {
1087 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1090 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1092 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1097 if ((s->deserialized_state == SERVICE_START &&
1098 (s->type == SERVICE_FORKING ||
1099 s->type == SERVICE_DBUS)) ||
1100 s->deserialized_state == SERVICE_START_POST ||
1101 s->deserialized_state == SERVICE_RUNNING ||
1102 s->deserialized_state == SERVICE_RELOAD ||
1103 s->deserialized_state == SERVICE_STOP ||
1104 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1105 s->deserialized_state == SERVICE_STOP_SIGKILL)
1106 if (s->main_pid > 0)
1107 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1110 if (s->deserialized_state == SERVICE_START_PRE ||
1111 s->deserialized_state == SERVICE_START ||
1112 s->deserialized_state == SERVICE_START_POST ||
1113 s->deserialized_state == SERVICE_RELOAD ||
1114 s->deserialized_state == SERVICE_STOP ||
1115 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1116 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1117 s->deserialized_state == SERVICE_STOP_POST ||
1118 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1119 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1120 if (s->control_pid > 0)
1121 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1124 service_set_state(s, s->deserialized_state);
1130 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1134 unsigned rn_fds = 0;
1142 if ((r = service_get_sockets(s, &set)) < 0)
1145 SET_FOREACH(sock, set, i) {
1149 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
1161 if (!(t = new(int, rn_fds+cn_fds))) {
1167 memcpy(t, rfds, rn_fds);
1168 memcpy(t+rn_fds, cfds, cn_fds);
1173 rn_fds = rn_fds+cn_fds;
1191 static int service_spawn(
1196 bool apply_permissions,
1211 if (s->socket_fd >= 0) {
1212 fds = &s->socket_fd;
1214 } else if ((r = service_collect_fds(s, &fds, &n_fds)) < 0)
1218 if (timeout && s->timeout_usec) {
1219 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1222 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1224 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1233 s->meta.manager->environment,
1236 UNIT(s)->meta.manager->confirm_spawn,
1237 UNIT(s)->meta.cgroup_bondings,
1245 if (s->socket_fd >= 0)
1246 service_close_socket_fd(s);
1251 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1252 /* FIXME: we need to do something here */
1263 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1268 static int main_pid_good(Service *s) {
1271 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1274 /* If we know the pid file, then lets just check if it is
1276 if (s->main_pid_known)
1277 return s->main_pid > 0;
1279 /* We don't know the pid */
1283 static int control_pid_good(Service *s) {
1286 return s->control_pid > 0;
1289 static int cgroup_good(Service *s) {
1294 if (s->valid_no_process)
1297 if ((r = cgroup_bonding_is_empty_list(UNIT(s)->meta.cgroup_bondings)) < 0)
1303 static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1310 if (allow_restart &&
1312 (s->restart == SERVICE_RESTART_ALWAYS ||
1313 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
1315 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
1318 service_set_state(s, SERVICE_AUTO_RESTART);
1320 service_set_state(s, s->failure ? SERVICE_MAINTAINANCE : SERVICE_DEAD);
1325 log_warning("%s failed to run install restart timer: %s", UNIT(s)->meta.id, strerror(-r));
1326 service_enter_dead(s, false, false);
1329 static void service_enter_signal(Service *s, ServiceState state, bool success);
1331 static void service_enter_stop_post(Service *s, bool success) {
1338 service_unwatch_control_pid(s);
1340 s->control_command_id = SERVICE_EXEC_STOP_POST;
1341 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
1342 if ((r = service_spawn(s,
1346 !s->permissions_start_only,
1347 !s->root_directory_start_only,
1348 &s->control_pid)) < 0)
1352 service_set_state(s, SERVICE_STOP_POST);
1354 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
1359 log_warning("%s failed to run stop-post executable: %s", UNIT(s)->meta.id, strerror(-r));
1360 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1363 static void service_enter_signal(Service *s, ServiceState state, bool success) {
1372 if (s->kill_mode != KILL_NONE) {
1373 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
1375 if (s->kill_mode == KILL_CONTROL_GROUP) {
1377 if ((r = cgroup_bonding_kill_list(UNIT(s)->meta.cgroup_bondings, sig)) < 0) {
1378 if (r != -EAGAIN && r != -ESRCH)
1387 if (s->main_pid > 0) {
1388 if (kill(s->kill_mode == KILL_PROCESS ? s->main_pid : -s->main_pid, sig) < 0 && errno != ESRCH)
1394 if (s->control_pid > 0) {
1395 if (kill(s->kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH)
1406 if (sent && (s->main_pid > 0 || s->control_pid > 0)) {
1407 if (s->timeout_usec > 0)
1408 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1411 service_set_state(s, state);
1412 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1413 service_enter_stop_post(s, true);
1415 service_enter_dead(s, true, true);
1420 log_warning("%s failed to kill processes: %s", UNIT(s)->meta.id, strerror(-r));
1422 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1423 service_enter_stop_post(s, false);
1425 service_enter_dead(s, false, true);
1428 static void service_enter_stop(Service *s, bool success) {
1435 service_unwatch_control_pid(s);
1437 s->control_command_id = SERVICE_EXEC_STOP;
1438 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
1439 if ((r = service_spawn(s,
1443 !s->permissions_start_only,
1444 !s->root_directory_start_only,
1445 &s->control_pid)) < 0)
1448 service_set_state(s, SERVICE_STOP);
1450 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1455 log_warning("%s failed to run stop executable: %s", UNIT(s)->meta.id, strerror(-r));
1456 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1459 static void service_enter_running(Service *s, bool success) {
1465 if (main_pid_good(s) != 0 &&
1466 cgroup_good(s) != 0 &&
1467 (s->bus_name_good || s->type != SERVICE_DBUS))
1468 service_set_state(s, SERVICE_RUNNING);
1469 else if (s->valid_no_process)
1470 service_set_state(s, SERVICE_EXITED);
1472 service_enter_stop(s, true);
1475 static void service_enter_start_post(Service *s) {
1479 service_unwatch_control_pid(s);
1481 s->control_command_id = SERVICE_EXEC_START_POST;
1482 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
1483 if ((r = service_spawn(s,
1487 !s->permissions_start_only,
1488 !s->root_directory_start_only,
1489 &s->control_pid)) < 0)
1493 service_set_state(s, SERVICE_START_POST);
1495 service_enter_running(s, true);
1500 log_warning("%s failed to run start-post executable: %s", UNIT(s)->meta.id, strerror(-r));
1501 service_enter_stop(s, false);
1504 static void service_enter_start(Service *s) {
1510 assert(s->exec_command[SERVICE_EXEC_START]);
1511 assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
1513 if (s->type == SERVICE_FORKING)
1514 service_unwatch_control_pid(s);
1516 service_unwatch_main_pid(s);
1518 if ((r = service_spawn(s,
1519 s->exec_command[SERVICE_EXEC_START],
1520 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS,
1527 if (s->type == SERVICE_SIMPLE) {
1528 /* For simple services we immediately start
1529 * the START_POST binaries. */
1532 s->main_pid_known = true;
1534 service_enter_start_post(s);
1536 } else if (s->type == SERVICE_FORKING) {
1538 /* For forking services we wait until the start
1539 * process exited. */
1541 s->control_pid = pid;
1543 s->control_command_id = SERVICE_EXEC_START;
1544 s->control_command = s->exec_command[SERVICE_EXEC_START];
1545 service_set_state(s, SERVICE_START);
1547 } else if (s->type == SERVICE_FINISH ||
1548 s->type == SERVICE_DBUS) {
1550 /* For finishing services we wait until the start
1551 * process exited, too, but it is our main process. */
1553 /* For D-Bus services we know the main pid right away,
1554 * but wait for the bus name to appear on the bus. */
1557 s->main_pid_known = true;
1559 service_set_state(s, SERVICE_START);
1561 assert_not_reached("Unknown service type");
1566 log_warning("%s failed to run start exectuable: %s", UNIT(s)->meta.id, strerror(-r));
1567 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1570 static void service_enter_start_pre(Service *s) {
1575 service_unwatch_control_pid(s);
1577 s->control_command_id = SERVICE_EXEC_START_PRE;
1578 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
1579 if ((r = service_spawn(s,
1583 !s->permissions_start_only,
1584 !s->root_directory_start_only,
1585 &s->control_pid)) < 0)
1588 service_set_state(s, SERVICE_START_PRE);
1590 service_enter_start(s);
1595 log_warning("%s failed to run start-pre executable: %s", UNIT(s)->meta.id, strerror(-r));
1596 service_enter_dead(s, false, true);
1599 static void service_enter_restart(Service *s) {
1603 service_enter_dead(s, true, false);
1605 if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL)) < 0)
1608 log_debug("%s scheduled restart job.", UNIT(s)->meta.id);
1613 log_warning("%s failed to schedule restart job: %s", UNIT(s)->meta.id, strerror(-r));
1614 service_enter_dead(s, false, false);
1617 static void service_enter_reload(Service *s) {
1622 service_unwatch_control_pid(s);
1624 s->control_command_id = SERVICE_EXEC_RELOAD;
1625 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
1626 if ((r = service_spawn(s,
1630 !s->permissions_start_only,
1631 !s->root_directory_start_only,
1632 &s->control_pid)) < 0)
1635 service_set_state(s, SERVICE_RELOAD);
1637 service_enter_running(s, true);
1642 log_warning("%s failed to run reload executable: %s", UNIT(s)->meta.id, strerror(-r));
1643 service_enter_stop(s, false);
1646 static void service_run_next(Service *s, bool success) {
1650 assert(s->control_command);
1651 assert(s->control_command->command_next);
1656 s->control_command = s->control_command->command_next;
1658 service_unwatch_control_pid(s);
1660 if ((r = service_spawn(s,
1664 !s->permissions_start_only,
1665 !s->root_directory_start_only,
1666 &s->control_pid)) < 0)
1672 log_warning("%s failed to run spawn next executable: %s", UNIT(s)->meta.id, strerror(-r));
1674 if (s->state == SERVICE_START_PRE)
1675 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1676 else if (s->state == SERVICE_STOP)
1677 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1678 else if (s->state == SERVICE_STOP_POST)
1679 service_enter_dead(s, false, true);
1681 service_enter_stop(s, false);
1684 static int service_start(Unit *u) {
1685 Service *s = SERVICE(u);
1689 /* We cannot fulfill this request right now, try again later
1691 if (s->state == SERVICE_STOP ||
1692 s->state == SERVICE_STOP_SIGTERM ||
1693 s->state == SERVICE_STOP_SIGKILL ||
1694 s->state == SERVICE_STOP_POST ||
1695 s->state == SERVICE_FINAL_SIGTERM ||
1696 s->state == SERVICE_FINAL_SIGKILL)
1699 /* Already on it! */
1700 if (s->state == SERVICE_START_PRE ||
1701 s->state == SERVICE_START ||
1702 s->state == SERVICE_START_POST)
1705 assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTAINANCE || s->state == SERVICE_AUTO_RESTART);
1707 /* Make sure we don't enter a busy loop of some kind. */
1708 if (!ratelimit_test(&s->ratelimit)) {
1709 log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
1714 s->main_pid_known = false;
1715 s->allow_restart = true;
1717 service_enter_start_pre(s);
1721 static int service_stop(Unit *u) {
1722 Service *s = SERVICE(u);
1726 /* Cannot do this now */
1727 if (s->state == SERVICE_START_PRE ||
1728 s->state == SERVICE_START ||
1729 s->state == SERVICE_START_POST ||
1730 s->state == SERVICE_RELOAD)
1734 if (s->state == SERVICE_STOP ||
1735 s->state == SERVICE_STOP_SIGTERM ||
1736 s->state == SERVICE_STOP_SIGKILL ||
1737 s->state == SERVICE_STOP_POST ||
1738 s->state == SERVICE_FINAL_SIGTERM ||
1739 s->state == SERVICE_FINAL_SIGKILL)
1742 if (s->state == SERVICE_AUTO_RESTART) {
1743 service_set_state(s, SERVICE_DEAD);
1747 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
1749 /* This is a user request, so don't do restarts on this
1751 s->allow_restart = false;
1753 service_enter_stop(s, true);
1757 static int service_reload(Unit *u) {
1758 Service *s = SERVICE(u);
1762 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
1764 service_enter_reload(s);
1768 static bool service_can_reload(Unit *u) {
1769 Service *s = SERVICE(u);
1773 return !!s->exec_command[SERVICE_EXEC_RELOAD];
1776 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
1777 Service *s = SERVICE(u);
1783 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
1784 unit_serialize_item(u, f, "failure", yes_no(s->failure));
1786 if (s->control_pid > 0)
1787 unit_serialize_item_format(u, f, "control-pid", "%u", (unsigned) (s->control_pid));
1789 if (s->main_pid > 0)
1790 unit_serialize_item_format(u, f, "main-pid", "%u", (unsigned) (s->main_pid));
1792 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
1794 /* There's a minor uncleanliness here: if there are multiple
1795 * commands attached here, we will start from the first one
1797 if (s->control_command_id >= 0)
1798 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
1800 if (s->socket_fd >= 0) {
1803 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
1806 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
1812 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
1813 Service *s = SERVICE(u);
1821 if (streq(key, "state")) {
1824 if ((state = service_state_from_string(value)) < 0)
1825 log_debug("Failed to parse state value %s", value);
1827 s->deserialized_state = state;
1828 } else if (streq(key, "failure")) {
1831 if ((b = parse_boolean(value)) < 0)
1832 log_debug("Failed to parse failure value %s", value);
1834 s->failure = b || s->failure;
1835 } else if (streq(key, "control-pid")) {
1838 if ((r = safe_atou(value, &pid)) < 0 || pid <= 0)
1839 log_debug("Failed to parse control-pid value %s", value);
1841 s->control_pid = (pid_t) pid;
1842 } else if (streq(key, "main-pid")) {
1845 if ((r = safe_atou(value, &pid)) < 0 || pid <= 0)
1846 log_debug("Failed to parse main-pid value %s", value);
1848 s->main_pid = (pid_t) pid;
1849 } else if (streq(key, "main-pid-known")) {
1852 if ((b = parse_boolean(value)) < 0)
1853 log_debug("Failed to parse main-pid-known value %s", value);
1855 s->main_pid_known = b;
1856 } else if (streq(key, "control-command")) {
1857 ServiceExecCommand id;
1859 if ((id = service_exec_command_from_string(value)) < 0)
1860 log_debug("Failed to parse exec-command value %s", value);
1862 s->control_command_id = id;
1863 s->control_command = s->exec_command[id];
1865 } else if (streq(key, "socket-fd")) {
1868 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
1869 log_debug("Failed to parse socket-fd value %s", value);
1872 if (s->socket_fd >= 0)
1873 close_nointr_nofail(s->socket_fd);
1874 s->socket_fd = fdset_remove(fds, fd);
1877 log_debug("Unknown serialization key '%s'", key);
1882 static UnitActiveState service_active_state(Unit *u) {
1885 return state_translation_table[SERVICE(u)->state];
1888 static const char *service_sub_state_to_string(Unit *u) {
1891 return service_state_to_string(SERVICE(u)->state);
1894 static bool service_check_gc(Unit *u) {
1895 Service *s = SERVICE(u);
1899 return !!s->sysv_path;
1902 static bool service_check_snapshot(Unit *u) {
1903 Service *s = SERVICE(u);
1907 return !s->got_socket_fd;
1910 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
1911 Service *s = SERVICE(u);
1917 success = is_clean_exit(code, status);
1918 s->failure = s->failure || !success;
1920 if (s->main_pid == pid) {
1922 exec_status_fill(&s->main_exec_status, pid, code, status);
1925 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_FINISH) {
1926 assert(s->exec_command[SERVICE_EXEC_START]);
1927 s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
1930 log_debug("%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status);
1932 /* The service exited, so the service is officially
1937 case SERVICE_START_POST:
1938 case SERVICE_RELOAD:
1940 /* Need to wait until the operation is
1945 assert(s->type == SERVICE_FINISH);
1947 /* This was our main goal, so let's go on */
1949 service_enter_start_post(s);
1951 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1954 case SERVICE_RUNNING:
1955 service_enter_running(s, success);
1958 case SERVICE_STOP_SIGTERM:
1959 case SERVICE_STOP_SIGKILL:
1961 if (!control_pid_good(s))
1962 service_enter_stop_post(s, success);
1964 /* If there is still a control process, wait for that first */
1968 assert_not_reached("Uh, main process died at wrong time.");
1971 } else if (s->control_pid == pid) {
1973 if (s->control_command)
1974 exec_status_fill(&s->control_command->exec_status, pid, code, status);
1978 log_debug("%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
1980 /* If we are shutting things down anyway we
1981 * don't care about failing commands. */
1983 if (s->control_command && s->control_command->command_next && success) {
1985 /* There is another command to *
1986 * execute, so let's do that. */
1988 log_debug("%s running next command for state %s", u->meta.id, service_state_to_string(s->state));
1989 service_run_next(s, success);
1992 /* No further commands for this step, so let's
1993 * figure out what to do next */
1995 s->control_command = NULL;
1996 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1998 log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state));
2002 case SERVICE_START_PRE:
2004 service_enter_start(s);
2006 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2010 assert(s->type == SERVICE_FORKING);
2012 /* Let's try to load the pid
2013 * file here if we can. We
2014 * ignore the return value,
2015 * since the PID file might
2016 * actually be created by a
2017 * START_POST script */
2021 service_load_pid_file(s);
2023 service_enter_start_post(s);
2025 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2029 case SERVICE_START_POST:
2030 if (success && s->pid_file && !s->main_pid_known) {
2033 /* Hmm, let's see if we can
2034 * load the pid now after the
2035 * start-post scripts got
2038 if ((r = service_load_pid_file(s)) < 0)
2039 log_warning("%s: failed to load PID file %s: %s", UNIT(s)->meta.id, s->pid_file, strerror(-r));
2044 case SERVICE_RELOAD:
2046 service_enter_running(s, true);
2048 service_enter_stop(s, false);
2053 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
2056 case SERVICE_STOP_SIGTERM:
2057 case SERVICE_STOP_SIGKILL:
2058 if (main_pid_good(s) <= 0)
2059 service_enter_stop_post(s, success);
2061 /* If there is still a service
2062 * process around, wait until
2063 * that one quit, too */
2066 case SERVICE_STOP_POST:
2067 case SERVICE_FINAL_SIGTERM:
2068 case SERVICE_FINAL_SIGKILL:
2069 service_enter_dead(s, success, true);
2073 assert_not_reached("Uh, control process died at wrong time.");
2077 assert_not_reached("Got SIGCHLD for unkown PID");
2080 static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
2081 Service *s = SERVICE(u);
2084 assert(elapsed == 1);
2086 assert(w == &s->timer_watch);
2090 case SERVICE_START_PRE:
2092 log_warning("%s operation timed out. Terminating.", u->meta.id);
2093 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2096 case SERVICE_START_POST:
2097 case SERVICE_RELOAD:
2098 log_warning("%s operation timed out. Stopping.", u->meta.id);
2099 service_enter_stop(s, false);
2103 log_warning("%s stopping timed out. Terminating.", u->meta.id);
2104 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2107 case SERVICE_STOP_SIGTERM:
2108 log_warning("%s stopping timed out. Killing.", u->meta.id);
2109 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2112 case SERVICE_STOP_SIGKILL:
2113 /* Uh, wie sent a SIGKILL and it is still not gone?
2114 * Must be something we cannot kill, so let's just be
2115 * weirded out and continue */
2117 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
2118 service_enter_stop_post(s, false);
2121 case SERVICE_STOP_POST:
2122 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
2123 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2126 case SERVICE_FINAL_SIGTERM:
2127 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
2128 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
2131 case SERVICE_FINAL_SIGKILL:
2132 log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", u->meta.id);
2133 service_enter_dead(s, false, true);
2136 case SERVICE_AUTO_RESTART:
2137 log_debug("%s holdoff time over, scheduling restart.", u->meta.id);
2138 service_enter_restart(s);
2142 assert_not_reached("Timeout at wrong time.");
2146 static void service_cgroup_notify_event(Unit *u) {
2147 Service *s = SERVICE(u);
2151 log_debug("%s: cgroup is empty", u->meta.id);
2155 /* Waiting for SIGCHLD is usually more interesting,
2156 * because it includes return codes/signals. Which is
2157 * why we ignore the cgroup events for most cases,
2158 * except when we don't know pid which to expect the
2161 case SERVICE_RUNNING:
2162 service_enter_running(s, true);
2170 static int service_enumerate(Manager *m) {
2174 char *path = NULL, *fpath = NULL, *name = NULL;
2179 STRV_FOREACH(p, m->sysvrcnd_path)
2180 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
2185 if (asprintf(&path, "%s/%s", *p, rcnd_table[i].path) < 0) {
2193 if (!(d = opendir(path))) {
2194 if (errno != ENOENT)
2195 log_warning("opendir() failed on %s: %s", path, strerror(errno));
2200 while ((de = readdir(d))) {
2204 if (ignore_file(de->d_name))
2207 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
2210 if (strlen(de->d_name) < 4)
2213 a = undecchar(de->d_name[1]);
2214 b = undecchar(de->d_name[2]);
2221 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i].path, de->d_name) < 0) {
2226 if (access(fpath, X_OK) < 0) {
2228 if (errno != ENOENT)
2229 log_warning("access() failed on %s: %s", fpath, strerror(errno));
2235 if (!(name = sysv_translate_name(de->d_name + 3))) {
2240 if ((r = manager_load_unit_prepare(m, name, NULL, &service)) < 0) {
2241 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
2245 if (de->d_name[0] == 'S' &&
2246 (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_BASIC))
2247 SERVICE(service)->sysv_start_priority =
2248 MAX(a*10 + b, SERVICE(service)->sysv_start_priority);
2250 manager_dispatch_load_queue(m);
2251 service = unit_follow_merge(service);
2253 if (de->d_name[0] == 'S') {
2254 Unit *runlevel_target;
2256 if ((r = manager_load_unit(m, rcnd_table[i].target, NULL, &runlevel_target)) < 0)
2259 if ((r = unit_add_dependency(runlevel_target, UNIT_WANTS, service, true)) < 0)
2262 if ((r = unit_add_dependency(service, UNIT_BEFORE, runlevel_target, true)) < 0)
2265 } else if (de->d_name[0] == 'K' && rcnd_table[i].type == RUNLEVEL_DOWN) {
2266 Unit *shutdown_target;
2268 /* We honour K links only for
2269 * halt/reboot. For the normal
2270 * runlevels we assume the
2272 * implicitly added by the
2273 * core logic. Also, we don't
2274 * really distuingish here
2275 * between the runlevels 0 and
2276 * 6 and just add them to the
2277 * special shutdown target. */
2279 if ((r = manager_load_unit(m, SPECIAL_SHUTDOWN_TARGET, NULL, &shutdown_target)) < 0)
2282 if ((r = unit_add_dependency(service, UNIT_CONFLICTS, shutdown_target, true)) < 0)
2285 if ((r = unit_add_dependency(service, UNIT_BEFORE, shutdown_target, true)) < 0)
2304 static void service_bus_name_owner_change(
2307 const char *old_owner,
2308 const char *new_owner) {
2310 Service *s = SERVICE(u);
2315 assert(streq(s->bus_name, name));
2316 assert(old_owner || new_owner);
2318 if (old_owner && new_owner)
2319 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->meta.id, name, old_owner, new_owner);
2321 log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner);
2323 log_debug("%s's D-Bus name %s now registered by %s", u->meta.id, name, new_owner);
2325 s->bus_name_good = !!new_owner;
2327 if (s->type == SERVICE_DBUS) {
2329 /* service_enter_running() will figure out what to
2331 if (s->state == SERVICE_RUNNING)
2332 service_enter_running(s, true);
2333 else if (s->state == SERVICE_START && new_owner)
2334 service_enter_start_post(s);
2336 } else if (new_owner &&
2338 (s->state == SERVICE_START ||
2339 s->state == SERVICE_START_POST ||
2340 s->state == SERVICE_RUNNING ||
2341 s->state == SERVICE_RELOAD)) {
2343 /* Try to acquire PID from bus service */
2344 log_debug("Trying to acquire PID from D-Bus name...");
2346 bus_query_pid(u->meta.manager, name);
2350 static void service_bus_query_pid_done(
2355 Service *s = SERVICE(u);
2360 log_debug("%s's D-Bus name %s is now owned by process %u", u->meta.id, name, (unsigned) pid);
2362 if (s->main_pid <= 0 &&
2363 (s->state == SERVICE_START ||
2364 s->state == SERVICE_START_POST ||
2365 s->state == SERVICE_RUNNING ||
2366 s->state == SERVICE_RELOAD))
2370 int service_set_socket_fd(Service *s, int fd) {
2374 /* This is called by the socket code when instantiating a new
2375 * service for a stream socket and the socket needs to be
2378 if (UNIT(s)->meta.load_state != UNIT_LOADED)
2381 if (s->socket_fd >= 0)
2384 if (s->state != SERVICE_DEAD)
2388 s->got_socket_fd = true;
2392 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
2393 [SERVICE_DEAD] = "dead",
2394 [SERVICE_START_PRE] = "start-pre",
2395 [SERVICE_START] = "start",
2396 [SERVICE_START_POST] = "start-post",
2397 [SERVICE_RUNNING] = "running",
2398 [SERVICE_EXITED] = "exited",
2399 [SERVICE_RELOAD] = "reload",
2400 [SERVICE_STOP] = "stop",
2401 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
2402 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
2403 [SERVICE_STOP_POST] = "stop-post",
2404 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
2405 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
2406 [SERVICE_MAINTAINANCE] = "maintainance",
2407 [SERVICE_AUTO_RESTART] = "auto-restart",
2410 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
2412 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
2413 [SERVICE_ONCE] = "once",
2414 [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
2415 [SERVICE_RESTART_ALWAYS] = "restart-always",
2418 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
2420 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
2421 [SERVICE_FORKING] = "forking",
2422 [SERVICE_SIMPLE] = "simple",
2423 [SERVICE_FINISH] = "finish",
2424 [SERVICE_DBUS] = "dbus"
2427 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
2429 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
2430 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
2431 [SERVICE_EXEC_START] = "ExecStart",
2432 [SERVICE_EXEC_START_POST] = "ExecStartPost",
2433 [SERVICE_EXEC_RELOAD] = "ExecReload",
2434 [SERVICE_EXEC_STOP] = "ExecStop",
2435 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
2438 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
2440 const UnitVTable service_vtable = {
2441 .suffix = ".service",
2443 .init = service_init,
2444 .done = service_done,
2445 .load = service_load,
2447 .coldplug = service_coldplug,
2449 .dump = service_dump,
2451 .start = service_start,
2452 .stop = service_stop,
2453 .reload = service_reload,
2455 .can_reload = service_can_reload,
2457 .serialize = service_serialize,
2458 .deserialize_item = service_deserialize_item,
2460 .active_state = service_active_state,
2461 .sub_state_to_string = service_sub_state_to_string,
2463 .check_gc = service_check_gc,
2464 .check_snapshot = service_check_snapshot,
2466 .sigchld_event = service_sigchld_event,
2467 .timer_event = service_timer_event,
2469 .cgroup_notify_empty = service_cgroup_notify_event,
2471 .bus_name_owner_change = service_bus_name_owner_change,
2472 .bus_query_pid_done = service_bus_query_pid_done,
2474 .bus_message_handler = bus_service_message_handler,
2476 .enumerate = service_enumerate