1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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 #include "bus-errors.h"
38 #define COMMENTS "#;\n"
39 #define NEWLINES "\n\r"
41 typedef enum RunlevelType {
50 const RunlevelType type;
52 /* Standard SysV runlevels for start-up */
53 { "rc1.d", SPECIAL_RESCUE_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 },
60 /* SUSE style boot.d */
61 { "boot.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
65 /* Debian style rcS.d */
66 { "rcS.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
69 /* Standard SysV runlevels for shutdown */
70 { "rc0.d", SPECIAL_POWEROFF_TARGET, RUNLEVEL_DOWN },
71 { "rc6.d", SPECIAL_REBOOT_TARGET, RUNLEVEL_DOWN }
73 /* Note that the order here matters, as we read the
74 directories in this order, and we want to make sure that
75 sysv_start_priority is known when we first load the
76 unit. And that value we only know from S links. Hence
77 UP/SYSINIT must be read before DOWN */
80 #define RUNLEVELS_UP "12345"
81 /* #define RUNLEVELS_DOWN "06" */
82 /* #define RUNLEVELS_BOOT "bBsS" */
84 static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
85 [SERVICE_DEAD] = UNIT_INACTIVE,
86 [SERVICE_START_PRE] = UNIT_ACTIVATING,
87 [SERVICE_START] = UNIT_ACTIVATING,
88 [SERVICE_START_POST] = UNIT_ACTIVATING,
89 [SERVICE_RUNNING] = UNIT_ACTIVE,
90 [SERVICE_EXITED] = UNIT_ACTIVE,
91 [SERVICE_RELOAD] = UNIT_RELOADING,
92 [SERVICE_STOP] = UNIT_DEACTIVATING,
93 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
94 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
95 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
96 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
97 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
98 [SERVICE_MAINTENANCE] = UNIT_MAINTENANCE,
99 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING
102 static void service_init(Unit *u) {
103 Service *s = SERVICE(u);
106 assert(u->meta.load_state == UNIT_STUB);
108 s->timeout_usec = DEFAULT_TIMEOUT_USEC;
109 s->restart_usec = DEFAULT_RESTART_USEC;
110 s->timer_watch.type = WATCH_INVALID;
111 s->sysv_start_priority = -1;
114 exec_context_init(&s->exec_context);
116 RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
118 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
121 static void service_unwatch_control_pid(Service *s) {
124 if (s->control_pid <= 0)
127 unit_unwatch_pid(UNIT(s), s->control_pid);
131 static void service_unwatch_main_pid(Service *s) {
134 if (s->main_pid <= 0)
137 unit_unwatch_pid(UNIT(s), s->main_pid);
141 static int service_set_main_pid(Service *s, pid_t pid) {
152 if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid())
153 log_warning("%s: Supervising process %lu which is not our child. We'll most likely not notice when it exits.",
154 s->meta.id, (unsigned long) pid);
157 s->main_pid_known = true;
159 exec_status_start(&s->main_exec_status, pid);
164 static void service_close_socket_fd(Service *s) {
167 if (s->socket_fd < 0)
170 close_nointr_nofail(s->socket_fd);
174 static void service_connection_unref(Service *s) {
180 socket_connection_unref(s->socket);
184 static void service_done(Unit *u) {
185 Service *s = SERVICE(u);
195 free(s->sysv_runlevels);
196 s->sysv_runlevels = NULL;
198 free(s->status_text);
199 s->status_text = NULL;
201 exec_context_done(&s->exec_context);
202 exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
203 s->control_command = NULL;
205 /* This will leak a process, but at least no memory or any of
207 service_unwatch_main_pid(s);
208 service_unwatch_control_pid(s);
211 unit_unwatch_bus_name(UNIT(u), s->bus_name);
216 service_close_socket_fd(s);
217 service_connection_unref(s);
219 unit_unwatch_timer(u, &s->timer_watch);
222 static char *sysv_translate_name(const char *name) {
225 if (!(r = new(char, strlen(name) + sizeof(".service"))))
228 if (startswith(name, "boot."))
229 /* Drop SuSE-style boot. prefix */
230 strcpy(stpcpy(r, name + 5), ".service");
231 else if (endswith(name, ".sh"))
232 /* Drop Debian-style .sh suffix */
233 strcpy(stpcpy(r, name) - 3, ".service");
235 /* Normal init scripts */
236 strcpy(stpcpy(r, name), ".service");
241 static int sysv_translate_facility(const char *name, char **_r) {
243 static const char * const table[] = {
244 /* LSB defined facilities */
245 "$local_fs", SPECIAL_LOCAL_FS_TARGET,
246 "$network", SPECIAL_NETWORK_TARGET,
247 "$named", SPECIAL_NSS_LOOKUP_TARGET,
248 "$portmap", SPECIAL_RPCBIND_TARGET,
249 "$remote_fs", SPECIAL_REMOTE_FS_TARGET,
250 "$syslog", SPECIAL_SYSLOG_TARGET,
251 "$time", SPECIAL_RTC_SET_TARGET,
253 /* Debian extensions */
255 "$mail-transport-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
257 "$mail-transfer-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
258 "$x-display-manager", SPECIAL_DISPLAY_MANAGER_SERVICE,
261 /* Fedora extensions, lacking the $ prefix */
262 "MTA", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
263 "smtpdaemon", SPECIAL_MAIL_TRANSFER_AGENT_TARGET
270 for (i = 0; i < ELEMENTSOF(table); i += 2)
271 if (streq(table[i], name)) {
272 if (!(r = strdup(table[i+1])))
281 if (!(r = sysv_translate_name(name)))
292 static int sysv_fix_order(Service *s) {
298 if (s->sysv_start_priority < 0)
301 /* For each pair of services where at least one lacks a LSB
302 * header, we use the start priority value to order things. */
304 LIST_FOREACH(units_per_type, other, s->meta.manager->units_per_type[UNIT_SERVICE]) {
307 bool special_s, special_t;
309 t = (Service*) other;
314 if (t->sysv_start_priority < 0)
317 /* If both units have modern headers we don't care
318 * about the priorities */
319 if ((!s->sysv_path || s->sysv_has_lsb) &&
320 (!t->sysv_path || t->sysv_has_lsb))
323 special_s = s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels);
324 special_t = t->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, t->sysv_runlevels);
326 if (special_t && !special_s)
328 else if (special_s && !special_t)
330 else if (t->sysv_start_priority < s->sysv_start_priority)
332 else if (t->sysv_start_priority > s->sysv_start_priority)
337 /* FIXME: Maybe we should compare the name here lexicographically? */
339 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
346 static ExecCommand *exec_command_new(const char *path, const char *arg1) {
349 if (!(c = new0(ExecCommand, 1)))
352 if (!(c->path = strdup(path))) {
357 if (!(c->argv = strv_new(path, arg1, NULL))) {
366 static int sysv_exec_commands(Service *s) {
370 assert(s->sysv_path);
372 if (!(c = exec_command_new(s->sysv_path, "start")))
374 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
376 if (!(c = exec_command_new(s->sysv_path, "stop")))
378 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
380 if (!(c = exec_command_new(s->sysv_path, "reload")))
382 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
387 static int service_load_sysv_path(Service *s, const char *path) {
404 if (!(f = fopen(path, "re"))) {
405 r = errno == ENOENT ? 0 : -errno;
410 if (!(s->sysv_path = strdup(path))) {
416 char l[LINE_MAX], *t;
418 if (!fgets(l, sizeof(l), f)) {
423 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
433 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
435 s->sysv_has_lsb = true;
439 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
445 t += strspn(t, WHITESPACE);
447 if (state == NORMAL) {
449 /* Try to parse Red Hat style chkconfig headers */
451 if (startswith_no_case(t, "chkconfig:")) {
453 char runlevels[16], *k;
457 if (sscanf(t+10, "%15s %i %*i",
459 &start_priority) != 2) {
461 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
465 /* A start priority gathered from the
466 * symlink farms is preferred over the
467 * data from the LSB header. */
468 if (start_priority < 0 || start_priority > 99)
469 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
470 else if (s->sysv_start_priority < 0)
471 s->sysv_start_priority = start_priority;
473 char_array_0(runlevels);
474 k = delete_chars(runlevels, WHITESPACE "-");
479 if (!(d = strdup(k))) {
484 free(s->sysv_runlevels);
485 s->sysv_runlevels = d;
488 } else if (startswith_no_case(t, "description:") &&
489 !u->meta.description) {
491 size_t k = strlen(t);
494 if (t[k-1] == '\\') {
499 if (!(d = strappend("LSB: ", strstrip(t+12)))) {
504 free(u->meta.description);
505 u->meta.description = d;
507 } else if (startswith_no_case(t, "pidfile:")) {
514 if (!path_is_absolute(fn)) {
515 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
519 if (!(fn = strdup(fn))) {
528 } else if (state == DESCRIPTION) {
530 /* Try to parse Red Hat style description
533 size_t k = strlen(t);
541 assert(u->meta.description);
542 if (asprintf(&d, "%s %s", u->meta.description, strstrip(t)) < 0) {
547 free(u->meta.description);
548 u->meta.description = d;
550 } else if (state == LSB || state == LSB_DESCRIPTION) {
552 if (startswith_no_case(t, "Provides:")) {
558 FOREACH_WORD_QUOTED(w, z, t+9, i) {
561 if (!(n = strndup(w, z))) {
566 r = sysv_translate_facility(n, &m);
575 if (unit_name_to_type(m) == UNIT_SERVICE)
576 r = unit_add_name(u, m);
577 else if (s->sysv_enabled)
578 r = unit_add_two_dependencies_by_name_inverse(u, UNIT_AFTER, UNIT_WANTS, m, NULL, true);
580 r = unit_add_dependency_by_name_inverse(u, UNIT_AFTER, m, NULL, true);
583 log_error("[%s:%u] Failed to add LSB Provides name %s, ignoring: %s", path, line, m, strerror(-r));
588 } else if (startswith_no_case(t, "Required-Start:") ||
589 startswith_no_case(t, "Should-Start:") ||
590 startswith_no_case(t, "X-Start-Before:") ||
591 startswith_no_case(t, "X-Start-After:")) {
597 FOREACH_WORD_QUOTED(w, z, strchr(t, ':')+1, i) {
600 if (!(n = strndup(w, z))) {
605 r = sysv_translate_facility(n, &m);
614 r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
617 log_error("[%s:%u] Failed to add dependency on %s, ignoring: %s", path, line, m, strerror(-r));
621 } else if (startswith_no_case(t, "Default-Start:")) {
626 k = delete_chars(t+14, WHITESPACE "-");
629 if (!(d = strdup(k))) {
634 free(s->sysv_runlevels);
635 s->sysv_runlevels = d;
638 } else if (startswith_no_case(t, "Description:") &&
639 !u->meta.description) {
642 /* We use the long description only if
643 * no short description is set. */
645 state = LSB_DESCRIPTION;
647 if (!(d = strappend("LSB: ", strstrip(t+12)))) {
652 free(u->meta.description);
653 u->meta.description = d;
655 } else if (startswith_no_case(t, "Short-Description:")) {
660 if (!(d = strappend("LSB: ", strstrip(t+18)))) {
665 free(u->meta.description);
666 u->meta.description = d;
668 } else if (startswith_no_case(t, "X-Interactive:")) {
671 if ((b = parse_boolean(strstrip(t+14))) < 0) {
672 log_warning("[%s:%u] Couldn't parse interactive flag. Ignoring.", path, line);
677 s->exec_context.std_input = EXEC_INPUT_TTY;
679 s->exec_context.std_input = EXEC_INPUT_NULL;
681 } else if (state == LSB_DESCRIPTION) {
683 if (startswith(l, "#\t") || startswith(l, "# ")) {
686 assert(u->meta.description);
687 if (asprintf(&d, "%s %s", u->meta.description, t) < 0) {
692 free(u->meta.description);
693 u->meta.description = d;
700 if ((r = sysv_exec_commands(s)) < 0)
703 if (s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
704 /* If there a runlevels configured for this service
705 * but none of the standard ones, then we assume this
706 * is some special kind of service (which might be
707 * needed for early boot) and don't create any links
710 s->meta.default_dependencies = false;
712 /* Don't timeout special services during boot (like fsck) */
716 /* Special setting for all SysV services */
717 s->type = SERVICE_FORKING;
718 s->remain_after_exit = true;
719 s->restart = SERVICE_ONCE;
720 s->exec_context.std_output =
721 (s->meta.manager->sysv_console || s->exec_context.std_input == EXEC_INPUT_TTY)
722 ? EXEC_OUTPUT_TTY : EXEC_OUTPUT_NULL;
723 s->exec_context.kill_mode = KILL_PROCESS_GROUP;
725 u->meta.load_state = UNIT_LOADED;
736 static int service_load_sysv_name(Service *s, const char *name) {
742 /* For SysV services we strip the boot. or .sh
743 * prefixes/suffixes. */
744 if (startswith(name, "boot.") ||
745 endswith(name, ".sh.service"))
748 STRV_FOREACH(p, s->meta.manager->lookup_paths.sysvinit_path) {
752 if (asprintf(&path, "%s/%s", *p, name) < 0)
755 assert(endswith(path, ".service"));
756 path[strlen(path)-8] = 0;
758 r = service_load_sysv_path(s, path);
760 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
761 /* Try Debian style xxx.sh source'able init scripts */
763 r = service_load_sysv_path(s, path);
768 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
769 /* Try SUSE style boot.xxx init scripts */
771 if (asprintf(&path, "%s/boot.%s", *p, name) < 0)
774 path[strlen(path)-8] = 0;
775 r = service_load_sysv_path(s, path);
782 if ((s->meta.load_state != UNIT_STUB))
789 static int service_load_sysv(Service *s) {
796 /* Load service data from SysV init scripts, preferably with
799 if (strv_isempty(s->meta.manager->lookup_paths.sysvinit_path))
802 if ((t = s->meta.id))
803 if ((r = service_load_sysv_name(s, t)) < 0)
806 if (s->meta.load_state == UNIT_STUB)
807 SET_FOREACH(t, s->meta.names, i) {
811 if ((r = service_load_sysv_name(s, t)) < 0)
814 if (s->meta.load_state != UNIT_STUB)
821 static int service_add_bus_name(Service *s) {
828 if (asprintf(&n, "dbus-%s.service", s->bus_name) < 0)
831 r = unit_merge_by_name(UNIT(s), n);
837 static int service_verify(Service *s) {
840 if (s->meta.load_state != UNIT_LOADED)
843 if (!s->exec_command[SERVICE_EXEC_START]) {
844 log_error("%s lacks ExecStart setting. Refusing.", s->meta.id);
848 if (s->type != SERVICE_ONESHOT &&
849 s->exec_command[SERVICE_EXEC_START]->command_next) {
850 log_error("%s has more than one ExecStart setting, which is only allowed for Type=oneshot services. Refusing.", s->meta.id);
854 if (s->type == SERVICE_DBUS && !s->bus_name) {
855 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", s->meta.id);
859 if (s->exec_context.pam_name && s->exec_context.kill_mode != KILL_CONTROL_GROUP) {
860 log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", s->meta.id);
867 static int service_add_default_dependencies(Service *s) {
872 /* Add a number of automatic dependencies useful for the
873 * majority of services. */
875 /* First, pull in base system */
876 if (s->meta.manager->running_as == MANAGER_SYSTEM) {
878 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
881 } else if (s->meta.manager->running_as == MANAGER_SESSION) {
883 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SOCKETS_TARGET, NULL, true)) < 0)
887 /* Second, activate normal shutdown */
888 return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTED_BY, SPECIAL_SHUTDOWN_TARGET, NULL, true);
891 static int service_load(Unit *u) {
893 Service *s = SERVICE(u);
897 /* Load a .service file */
898 if ((r = unit_load_fragment(u)) < 0)
901 /* Load a classic init script as a fallback, if we couldn't find anything */
902 if (u->meta.load_state == UNIT_STUB)
903 if ((r = service_load_sysv(s)) < 0)
906 /* Still nothing found? Then let's give up */
907 if (u->meta.load_state == UNIT_STUB)
910 /* We were able to load something, then let's add in the
911 * dropin directories. */
912 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
915 /* This is a new unit? Then let's add in some extras */
916 if (u->meta.load_state == UNIT_LOADED) {
917 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
920 if ((r = unit_add_default_cgroup(u)) < 0)
923 if ((r = sysv_fix_order(s)) < 0)
927 if ((r = service_add_bus_name(s)) < 0)
930 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
934 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
935 s->notify_access = NOTIFY_MAIN;
937 if (s->type == SERVICE_DBUS || s->bus_name)
938 if ((r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_DBUS_TARGET, NULL, true)) < 0)
941 if (s->meta.default_dependencies)
942 if ((r = service_add_default_dependencies(s)) < 0)
946 return service_verify(s);
949 static void service_dump(Unit *u, FILE *f, const char *prefix) {
951 ServiceExecCommand c;
952 Service *s = SERVICE(u);
958 p2 = strappend(prefix, "\t");
959 prefix2 = p2 ? p2 : prefix;
962 "%sService State: %s\n"
963 "%sPermissionsStartOnly: %s\n"
964 "%sRootDirectoryStartOnly: %s\n"
965 "%sRemainAfterExit: %s\n"
968 "%sNotifyAccess: %s\n",
969 prefix, service_state_to_string(s->state),
970 prefix, yes_no(s->permissions_start_only),
971 prefix, yes_no(s->root_directory_start_only),
972 prefix, yes_no(s->remain_after_exit),
973 prefix, service_type_to_string(s->type),
974 prefix, service_restart_to_string(s->restart),
975 prefix, notify_access_to_string(s->notify_access));
977 if (s->control_pid > 0)
979 "%sControl PID: %lu\n",
980 prefix, (unsigned long) s->control_pid);
985 prefix, (unsigned long) s->main_pid);
990 prefix, s->pid_file);
995 "%sBus Name Good: %s\n",
997 prefix, yes_no(s->bus_name_good));
999 exec_context_dump(&s->exec_context, f, prefix);
1001 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
1003 if (!s->exec_command[c])
1006 fprintf(f, "%s-> %s:\n",
1007 prefix, service_exec_command_to_string(c));
1009 exec_command_dump_list(s->exec_command[c], f, prefix2);
1014 "%sSysV Init Script Path: %s\n"
1015 "%sSysV Init Script has LSB Header: %s\n",
1016 prefix, s->sysv_path,
1017 prefix, yes_no(s->sysv_has_lsb));
1019 if (s->sysv_start_priority >= 0)
1021 "%sSysVStartPriority: %i\n"
1022 "%sSysVEnabled: %s\n",
1023 prefix, s->sysv_start_priority,
1024 prefix, yes_no(s->sysv_enabled));
1026 if (s->sysv_runlevels)
1027 fprintf(f, "%sSysVRunLevels: %s\n",
1028 prefix, s->sysv_runlevels);
1031 fprintf(f, "%sStatus Text: %s\n",
1032 prefix, s->status_text);
1037 static int service_load_pid_file(Service *s) {
1044 if (s->main_pid_known)
1047 assert(s->main_pid <= 0);
1052 if ((r = read_one_line_file(s->pid_file, &k)) < 0)
1055 r = parse_pid(k, &pid);
1061 if (kill(pid, 0) < 0 && errno != EPERM) {
1062 log_warning("PID %lu read from file %s does not exist. Your service or init script might be broken.",
1063 (unsigned long) pid, s->pid_file);
1067 if ((r = service_set_main_pid(s, pid)) < 0)
1070 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1071 /* FIXME: we need to do something here */
1077 static int service_get_sockets(Service *s, Set **_set) {
1086 if (s->socket_fd >= 0)
1089 /* Collects all Socket objects that belong to this
1090 * service. Note that a service might have multiple sockets
1091 * via multiple names. */
1093 if (!(set = set_new(NULL, NULL)))
1096 SET_FOREACH(t, s->meta.names, i) {
1100 /* Look for all socket objects that go by any of our
1101 * units and collect their fds */
1103 if (!(k = unit_name_change_suffix(t, ".socket"))) {
1108 p = manager_get_unit(s->meta.manager, k);
1114 if ((r = set_put(set, p)) < 0)
1126 static int service_notify_sockets_dead(Service *s) {
1134 if (s->socket_fd >= 0)
1137 /* Notifies all our sockets when we die */
1138 if ((r = service_get_sockets(s, &set)) < 0)
1141 SET_FOREACH(sock, set, i)
1142 socket_notify_service_dead(sock);
1149 static void service_set_state(Service *s, ServiceState state) {
1150 ServiceState old_state;
1153 old_state = s->state;
1156 if (state != SERVICE_START_PRE &&
1157 state != SERVICE_START &&
1158 state != SERVICE_START_POST &&
1159 state != SERVICE_RELOAD &&
1160 state != SERVICE_STOP &&
1161 state != SERVICE_STOP_SIGTERM &&
1162 state != SERVICE_STOP_SIGKILL &&
1163 state != SERVICE_STOP_POST &&
1164 state != SERVICE_FINAL_SIGTERM &&
1165 state != SERVICE_FINAL_SIGKILL &&
1166 state != SERVICE_AUTO_RESTART)
1167 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1169 if (state != SERVICE_START &&
1170 state != SERVICE_START_POST &&
1171 state != SERVICE_RUNNING &&
1172 state != SERVICE_RELOAD &&
1173 state != SERVICE_STOP &&
1174 state != SERVICE_STOP_SIGTERM &&
1175 state != SERVICE_STOP_SIGKILL)
1176 service_unwatch_main_pid(s);
1178 if (state != SERVICE_START_PRE &&
1179 state != SERVICE_START &&
1180 state != SERVICE_START_POST &&
1181 state != SERVICE_RELOAD &&
1182 state != SERVICE_STOP &&
1183 state != SERVICE_STOP_SIGTERM &&
1184 state != SERVICE_STOP_SIGKILL &&
1185 state != SERVICE_STOP_POST &&
1186 state != SERVICE_FINAL_SIGTERM &&
1187 state != SERVICE_FINAL_SIGKILL) {
1188 service_unwatch_control_pid(s);
1189 s->control_command = NULL;
1190 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1193 if (state == SERVICE_DEAD ||
1194 state == SERVICE_STOP ||
1195 state == SERVICE_STOP_SIGTERM ||
1196 state == SERVICE_STOP_SIGKILL ||
1197 state == SERVICE_STOP_POST ||
1198 state == SERVICE_FINAL_SIGTERM ||
1199 state == SERVICE_FINAL_SIGKILL ||
1200 state == SERVICE_MAINTENANCE ||
1201 state == SERVICE_AUTO_RESTART)
1202 service_notify_sockets_dead(s);
1204 if (state != SERVICE_START_PRE &&
1205 state != SERVICE_START &&
1206 state != SERVICE_START_POST &&
1207 state != SERVICE_RUNNING &&
1208 state != SERVICE_RELOAD &&
1209 state != SERVICE_STOP &&
1210 state != SERVICE_STOP_SIGTERM &&
1211 state != SERVICE_STOP_SIGKILL &&
1212 state != SERVICE_STOP_POST &&
1213 state != SERVICE_FINAL_SIGTERM &&
1214 state != SERVICE_FINAL_SIGKILL &&
1215 !(state == SERVICE_DEAD && s->meta.job)) {
1216 service_close_socket_fd(s);
1217 service_connection_unref(s);
1220 /* For the inactive states unit_notify() will trim the cgroup,
1221 * but for exit we have to do that ourselves... */
1222 if (state == SERVICE_EXITED)
1223 cgroup_bonding_trim_list(s->meta.cgroup_bondings, true);
1225 if (old_state != state)
1226 log_debug("%s changed %s -> %s", s->meta.id, service_state_to_string(old_state), service_state_to_string(state));
1228 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
1231 static int service_coldplug(Unit *u) {
1232 Service *s = SERVICE(u);
1236 assert(s->state == SERVICE_DEAD);
1238 if (s->deserialized_state != s->state) {
1240 if (s->deserialized_state == SERVICE_START_PRE ||
1241 s->deserialized_state == SERVICE_START ||
1242 s->deserialized_state == SERVICE_START_POST ||
1243 s->deserialized_state == SERVICE_RELOAD ||
1244 s->deserialized_state == SERVICE_STOP ||
1245 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1246 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1247 s->deserialized_state == SERVICE_STOP_POST ||
1248 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1249 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
1250 s->deserialized_state == SERVICE_AUTO_RESTART) {
1252 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1255 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1257 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1262 if ((s->deserialized_state == SERVICE_START &&
1263 (s->type == SERVICE_FORKING ||
1264 s->type == SERVICE_DBUS ||
1265 s->type == SERVICE_ONESHOT ||
1266 s->type == SERVICE_NOTIFY)) ||
1267 s->deserialized_state == SERVICE_START_POST ||
1268 s->deserialized_state == SERVICE_RUNNING ||
1269 s->deserialized_state == SERVICE_RELOAD ||
1270 s->deserialized_state == SERVICE_STOP ||
1271 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1272 s->deserialized_state == SERVICE_STOP_SIGKILL)
1273 if (s->main_pid > 0)
1274 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1277 if (s->deserialized_state == SERVICE_START_PRE ||
1278 s->deserialized_state == SERVICE_START ||
1279 s->deserialized_state == SERVICE_START_POST ||
1280 s->deserialized_state == SERVICE_RELOAD ||
1281 s->deserialized_state == SERVICE_STOP ||
1282 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1283 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1284 s->deserialized_state == SERVICE_STOP_POST ||
1285 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1286 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1287 if (s->control_pid > 0)
1288 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1291 service_set_state(s, s->deserialized_state);
1297 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1301 unsigned rn_fds = 0;
1309 if (s->socket_fd >= 0)
1312 if ((r = service_get_sockets(s, &set)) < 0)
1315 SET_FOREACH(sock, set, i) {
1319 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
1331 if (!(t = new(int, rn_fds+cn_fds))) {
1337 memcpy(t, rfds, rn_fds);
1338 memcpy(t+rn_fds, cfds, cn_fds);
1343 rn_fds = rn_fds+cn_fds;
1361 static int service_spawn(
1366 bool apply_permissions,
1368 bool apply_tty_stdin,
1369 bool set_notify_socket,
1374 int *fds = NULL, *fdsbuf = NULL;
1375 unsigned n_fds = 0, n_env = 0;
1376 char **argv = NULL, **final_env = NULL, **our_env = NULL;
1383 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1384 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1385 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1387 if (s->socket_fd >= 0) {
1388 fds = &s->socket_fd;
1391 if ((r = service_collect_fds(s, &fdsbuf, &n_fds)) < 0)
1398 if (timeout && s->timeout_usec) {
1399 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1402 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1404 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1409 if (!(our_env = new0(char*, 3))) {
1414 if (set_notify_socket)
1415 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=@%s", s->meta.manager->notify_socket) < 0) {
1420 if (s->main_pid > 0)
1421 if (asprintf(our_env + n_env++, "MAINPID=%lu", (unsigned long) s->main_pid) < 0) {
1426 if (!(final_env = strv_env_merge(2,
1427 s->meta.manager->environment,
1442 s->meta.manager->confirm_spawn,
1443 s->meta.cgroup_bondings,
1450 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1451 /* FIXME: we need to do something here */
1457 strv_free(final_env);
1467 strv_free(final_env);
1470 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1475 static int main_pid_good(Service *s) {
1478 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1481 /* If we know the pid file, then lets just check if it is
1483 if (s->main_pid_known)
1484 return s->main_pid > 0;
1486 /* We don't know the pid */
1490 static int control_pid_good(Service *s) {
1493 return s->control_pid > 0;
1496 static int cgroup_good(Service *s) {
1501 if ((r = cgroup_bonding_is_empty_list(s->meta.cgroup_bondings)) < 0)
1507 static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1514 if (allow_restart &&
1515 !s->forbid_restart &&
1516 (s->restart == SERVICE_RESTART_ALWAYS ||
1517 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
1519 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
1522 service_set_state(s, SERVICE_AUTO_RESTART);
1524 service_set_state(s, s->failure ? SERVICE_MAINTENANCE : SERVICE_DEAD);
1526 s->forbid_restart = false;
1531 log_warning("%s failed to run install restart timer: %s", s->meta.id, strerror(-r));
1532 service_enter_dead(s, false, false);
1535 static void service_enter_signal(Service *s, ServiceState state, bool success);
1537 static void service_enter_stop_post(Service *s, bool success) {
1544 service_unwatch_control_pid(s);
1546 s->control_command_id = SERVICE_EXEC_STOP_POST;
1547 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
1548 if ((r = service_spawn(s,
1552 !s->permissions_start_only,
1553 !s->root_directory_start_only,
1556 &s->control_pid)) < 0)
1560 service_set_state(s, SERVICE_STOP_POST);
1562 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
1567 log_warning("%s failed to run 'stop-post' task: %s", s->meta.id, strerror(-r));
1568 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1571 static void service_enter_signal(Service *s, ServiceState state, bool success) {
1580 if (s->exec_context.kill_mode != KILL_NONE) {
1581 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? s->exec_context.kill_signal : SIGKILL;
1583 if (s->exec_context.kill_mode == KILL_CONTROL_GROUP) {
1585 if ((r = cgroup_bonding_kill_list(s->meta.cgroup_bondings, sig)) < 0) {
1586 if (r != -EAGAIN && r != -ESRCH)
1595 if (s->main_pid > 0) {
1596 if (kill(s->exec_context.kill_mode == KILL_PROCESS ? s->main_pid : -s->main_pid, sig) < 0 && errno != ESRCH)
1602 if (s->control_pid > 0) {
1603 if (kill(s->exec_context.kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH)
1614 if (sent && (s->main_pid > 0 || s->control_pid > 0)) {
1615 if (s->timeout_usec > 0)
1616 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1619 service_set_state(s, state);
1620 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1621 service_enter_stop_post(s, true);
1623 service_enter_dead(s, true, true);
1628 log_warning("%s failed to kill processes: %s", s->meta.id, strerror(-r));
1630 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1631 service_enter_stop_post(s, false);
1633 service_enter_dead(s, false, true);
1636 static void service_enter_stop(Service *s, bool success) {
1644 service_unwatch_control_pid(s);
1646 s->control_command_id = SERVICE_EXEC_STOP;
1647 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
1648 if ((r = service_spawn(s,
1652 !s->permissions_start_only,
1653 !s->root_directory_start_only,
1656 &s->control_pid)) < 0)
1659 service_set_state(s, SERVICE_STOP);
1661 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1666 log_warning("%s failed to run 'stop' task: %s", s->meta.id, strerror(-r));
1667 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1670 static void service_enter_running(Service *s, bool success) {
1671 int main_pid_ok, cgroup_ok;
1677 main_pid_ok = main_pid_good(s);
1678 cgroup_ok = cgroup_good(s);
1680 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
1681 (s->bus_name_good || s->type != SERVICE_DBUS))
1682 service_set_state(s, SERVICE_RUNNING);
1683 else if (s->remain_after_exit)
1684 service_set_state(s, SERVICE_EXITED);
1686 service_enter_stop(s, true);
1689 static void service_enter_start_post(Service *s) {
1693 service_unwatch_control_pid(s);
1695 s->control_command_id = SERVICE_EXEC_START_POST;
1696 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
1697 if ((r = service_spawn(s,
1701 !s->permissions_start_only,
1702 !s->root_directory_start_only,
1705 &s->control_pid)) < 0)
1708 service_set_state(s, SERVICE_START_POST);
1710 service_enter_running(s, true);
1715 log_warning("%s failed to run 'start-post' task: %s", s->meta.id, strerror(-r));
1716 service_enter_stop(s, false);
1719 static void service_enter_start(Service *s) {
1725 assert(s->exec_command[SERVICE_EXEC_START]);
1726 assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
1728 if (s->type == SERVICE_FORKING)
1729 service_unwatch_control_pid(s);
1731 service_unwatch_main_pid(s);
1733 s->control_command_id = SERVICE_EXEC_START;
1734 s->control_command = s->exec_command[SERVICE_EXEC_START];
1736 if ((r = service_spawn(s,
1738 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY,
1743 s->notify_access != NOTIFY_NONE,
1747 if (s->type == SERVICE_SIMPLE) {
1748 /* For simple services we immediately start
1749 * the START_POST binaries. */
1751 service_set_main_pid(s, pid);
1752 service_enter_start_post(s);
1754 } else if (s->type == SERVICE_FORKING) {
1756 /* For forking services we wait until the start
1757 * process exited. */
1759 s->control_pid = pid;
1760 service_set_state(s, SERVICE_START);
1762 } else if (s->type == SERVICE_ONESHOT ||
1763 s->type == SERVICE_DBUS ||
1764 s->type == SERVICE_NOTIFY) {
1766 /* For oneshot services we wait until the start
1767 * process exited, too, but it is our main process. */
1769 /* For D-Bus services we know the main pid right away,
1770 * but wait for the bus name to appear on the
1771 * bus. Notify services are similar. */
1773 service_set_main_pid(s, pid);
1774 service_set_state(s, SERVICE_START);
1776 assert_not_reached("Unknown service type");
1781 log_warning("%s failed to run 'start' task: %s", s->meta.id, strerror(-r));
1782 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1785 static void service_enter_start_pre(Service *s) {
1790 service_unwatch_control_pid(s);
1792 s->control_command_id = SERVICE_EXEC_START_PRE;
1793 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
1794 if ((r = service_spawn(s,
1798 !s->permissions_start_only,
1799 !s->root_directory_start_only,
1802 &s->control_pid)) < 0)
1805 service_set_state(s, SERVICE_START_PRE);
1807 service_enter_start(s);
1812 log_warning("%s failed to run 'start-pre' task: %s", s->meta.id, strerror(-r));
1813 service_enter_dead(s, false, true);
1816 static void service_enter_restart(Service *s) {
1821 dbus_error_init(&error);
1823 service_enter_dead(s, true, false);
1825 if ((r = manager_add_job(s->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL, NULL)) < 0)
1828 log_debug("%s scheduled restart job.", s->meta.id);
1832 log_warning("%s failed to schedule restart job: %s", s->meta.id, bus_error(&error, -r));
1833 service_enter_dead(s, false, false);
1835 dbus_error_free(&error);
1838 static void service_enter_reload(Service *s) {
1843 service_unwatch_control_pid(s);
1845 s->control_command_id = SERVICE_EXEC_RELOAD;
1846 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
1847 if ((r = service_spawn(s,
1851 !s->permissions_start_only,
1852 !s->root_directory_start_only,
1855 &s->control_pid)) < 0)
1858 service_set_state(s, SERVICE_RELOAD);
1860 service_enter_running(s, true);
1865 log_warning("%s failed to run 'reload' task: %s", s->meta.id, strerror(-r));
1866 service_enter_stop(s, false);
1869 static void service_run_next_control(Service *s, bool success) {
1873 assert(s->control_command);
1874 assert(s->control_command->command_next);
1879 assert(s->control_command_id != SERVICE_EXEC_START);
1881 s->control_command = s->control_command->command_next;
1882 service_unwatch_control_pid(s);
1884 if ((r = service_spawn(s,
1888 !s->permissions_start_only,
1889 !s->root_directory_start_only,
1890 s->control_command_id == SERVICE_EXEC_START_PRE ||
1891 s->control_command_id == SERVICE_EXEC_STOP_POST,
1893 &s->control_pid)) < 0)
1899 log_warning("%s failed to run next control task: %s", s->meta.id, strerror(-r));
1901 if (s->state == SERVICE_START_PRE)
1902 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1903 else if (s->state == SERVICE_STOP)
1904 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1905 else if (s->state == SERVICE_STOP_POST)
1906 service_enter_dead(s, false, true);
1908 service_enter_stop(s, false);
1911 static void service_run_next_main(Service *s, bool success) {
1916 assert(s->control_command);
1917 assert(s->control_command->command_next);
1922 assert(s->control_command_id == SERVICE_EXEC_START);
1923 assert(s->type == SERVICE_ONESHOT);
1925 s->control_command = s->control_command->command_next;
1926 service_unwatch_main_pid(s);
1928 if ((r = service_spawn(s,
1935 s->notify_access != NOTIFY_NONE,
1939 service_set_main_pid(s, pid);
1944 log_warning("%s failed to run next main task: %s", s->meta.id, strerror(-r));
1945 service_enter_stop(s, false);
1948 static int service_start(Unit *u) {
1949 Service *s = SERVICE(u);
1953 /* We cannot fulfill this request right now, try again later
1955 if (s->state == SERVICE_STOP ||
1956 s->state == SERVICE_STOP_SIGTERM ||
1957 s->state == SERVICE_STOP_SIGKILL ||
1958 s->state == SERVICE_STOP_POST ||
1959 s->state == SERVICE_FINAL_SIGTERM ||
1960 s->state == SERVICE_FINAL_SIGKILL)
1963 /* Already on it! */
1964 if (s->state == SERVICE_START_PRE ||
1965 s->state == SERVICE_START ||
1966 s->state == SERVICE_START_POST)
1969 assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTENANCE || s->state == SERVICE_AUTO_RESTART);
1971 /* Make sure we don't enter a busy loop of some kind. */
1972 if (!ratelimit_test(&s->ratelimit)) {
1973 log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
1977 if ((s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1978 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1979 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) &&
1981 log_warning("%s can only be started with a per-connection socket.", u->meta.id);
1986 s->main_pid_known = false;
1987 s->forbid_restart = false;
1989 service_enter_start_pre(s);
1993 static int service_stop(Unit *u) {
1994 Service *s = SERVICE(u);
1998 /* This is a user request, so don't do restarts on this
2000 s->forbid_restart = true;
2003 if (s->state == SERVICE_STOP ||
2004 s->state == SERVICE_STOP_SIGTERM ||
2005 s->state == SERVICE_STOP_SIGKILL ||
2006 s->state == SERVICE_STOP_POST ||
2007 s->state == SERVICE_FINAL_SIGTERM ||
2008 s->state == SERVICE_FINAL_SIGKILL)
2011 /* Don't allow a restart */
2012 if (s->state == SERVICE_AUTO_RESTART) {
2013 service_set_state(s, SERVICE_DEAD);
2017 /* If there's already something running we go directly into
2019 if (s->state == SERVICE_START_PRE ||
2020 s->state == SERVICE_START ||
2021 s->state == SERVICE_START_POST ||
2022 s->state == SERVICE_RELOAD) {
2023 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
2027 assert(s->state == SERVICE_RUNNING ||
2028 s->state == SERVICE_EXITED);
2030 service_enter_stop(s, true);
2034 static int service_reload(Unit *u) {
2035 Service *s = SERVICE(u);
2039 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
2041 service_enter_reload(s);
2045 static bool service_can_reload(Unit *u) {
2046 Service *s = SERVICE(u);
2050 return !!s->exec_command[SERVICE_EXEC_RELOAD];
2053 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2054 Service *s = SERVICE(u);
2060 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2061 unit_serialize_item(u, f, "failure", yes_no(s->failure));
2063 if (s->control_pid > 0)
2064 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
2066 if (s->main_pid_known && s->main_pid > 0)
2067 unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
2069 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2072 unit_serialize_item(u, f, "status-text", s->status_text);
2074 /* There's a minor uncleanliness here: if there are multiple
2075 * commands attached here, we will start from the first one
2077 if (s->control_command_id >= 0)
2078 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
2080 if (s->socket_fd >= 0) {
2083 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2086 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2089 if (s->main_exec_status.pid > 0) {
2090 unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu", (unsigned long) s->main_exec_status.pid);
2092 if (s->main_exec_status.start_timestamp.realtime > 0) {
2093 unit_serialize_item_format(u, f, "main-exec-status-start-realtime",
2094 "%llu", (unsigned long long) s->main_exec_status.start_timestamp.realtime);
2096 unit_serialize_item_format(u, f, "main-exec-status-start-monotonic",
2097 "%llu", (unsigned long long) s->main_exec_status.start_timestamp.monotonic);
2100 if (s->main_exec_status.exit_timestamp.realtime > 0) {
2101 unit_serialize_item_format(u, f, "main-exec-status-exit-realtime",
2102 "%llu", (unsigned long long) s->main_exec_status.exit_timestamp.realtime);
2103 unit_serialize_item_format(u, f, "main-exec-status-exit-monotonic",
2104 "%llu", (unsigned long long) s->main_exec_status.exit_timestamp.monotonic);
2106 unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code);
2107 unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status);
2114 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2115 Service *s = SERVICE(u);
2122 if (streq(key, "state")) {
2125 if ((state = service_state_from_string(value)) < 0)
2126 log_debug("Failed to parse state value %s", value);
2128 s->deserialized_state = state;
2129 } else if (streq(key, "failure")) {
2132 if ((b = parse_boolean(value)) < 0)
2133 log_debug("Failed to parse failure value %s", value);
2135 s->failure = b || s->failure;
2136 } else if (streq(key, "control-pid")) {
2139 if (parse_pid(value, &pid) < 0)
2140 log_debug("Failed to parse control-pid value %s", value);
2142 s->control_pid = pid;
2143 } else if (streq(key, "main-pid")) {
2146 if (parse_pid(value, &pid) < 0)
2147 log_debug("Failed to parse main-pid value %s", value);
2149 service_set_main_pid(s, (pid_t) pid);
2150 } else if (streq(key, "main-pid-known")) {
2153 if ((b = parse_boolean(value)) < 0)
2154 log_debug("Failed to parse main-pid-known value %s", value);
2156 s->main_pid_known = b;
2157 } else if (streq(key, "status-text")) {
2160 if ((t = strdup(value))) {
2161 free(s->status_text);
2165 } else if (streq(key, "control-command")) {
2166 ServiceExecCommand id;
2168 if ((id = service_exec_command_from_string(value)) < 0)
2169 log_debug("Failed to parse exec-command value %s", value);
2171 s->control_command_id = id;
2172 s->control_command = s->exec_command[id];
2174 } else if (streq(key, "socket-fd")) {
2177 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2178 log_debug("Failed to parse socket-fd value %s", value);
2181 if (s->socket_fd >= 0)
2182 close_nointr_nofail(s->socket_fd);
2183 s->socket_fd = fdset_remove(fds, fd);
2185 } else if (streq(key, "main-exec-status-pid")) {
2188 if (parse_pid(value, &pid) < 0)
2189 log_debug("Failed to parse main-exec-status-pid value %s", value);
2191 s->main_exec_status.pid = pid;
2192 } else if (streq(key, "main-exec-status-code")) {
2195 if (safe_atoi(value, &i) < 0)
2196 log_debug("Failed to parse main-exec-status-code value %s", value);
2198 s->main_exec_status.code = i;
2199 } else if (streq(key, "main-exec-status-status")) {
2202 if (safe_atoi(value, &i) < 0)
2203 log_debug("Failed to parse main-exec-status-status value %s", value);
2205 s->main_exec_status.status = i;
2206 } else if (streq(key, "main-exec-status-start-realtime")) {
2209 if (safe_atou64(value, &k) < 0)
2210 log_debug("Failed to parse main-exec-status-start-realtime value %s", value);
2212 s->main_exec_status.start_timestamp.realtime = (usec_t) k;
2213 } else if (streq(key, "main-exec-status-start-monotonic")) {
2216 if (safe_atou64(value, &k) < 0)
2217 log_debug("Failed to parse main-exec-status-start-monotonic value %s", value);
2219 s->main_exec_status.start_timestamp.monotonic = (usec_t) k;
2220 } else if (streq(key, "main-exec-status-exit-realtime")) {
2223 if (safe_atou64(value, &k) < 0)
2224 log_debug("Failed to parse main-exec-status-exit-realtime value %s", value);
2226 s->main_exec_status.exit_timestamp.realtime = (usec_t) k;
2227 } else if (streq(key, "main-exec-status-exit-monotonic")) {
2230 if (safe_atou64(value, &k) < 0)
2231 log_debug("Failed to parse main-exec-status-exit-monotonic value %s", value);
2233 s->main_exec_status.exit_timestamp.monotonic = (usec_t) k;
2235 log_debug("Unknown serialization key '%s'", key);
2240 static UnitActiveState service_active_state(Unit *u) {
2243 return state_translation_table[SERVICE(u)->state];
2246 static const char *service_sub_state_to_string(Unit *u) {
2249 return service_state_to_string(SERVICE(u)->state);
2252 static bool service_check_gc(Unit *u) {
2253 Service *s = SERVICE(u);
2257 return !!s->sysv_path;
2260 static bool service_check_snapshot(Unit *u) {
2261 Service *s = SERVICE(u);
2265 return !s->got_socket_fd;
2268 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2269 Service *s = SERVICE(u);
2276 success = is_clean_exit_lsb(code, status);
2278 success = is_clean_exit(code, status);
2280 if (s->main_pid == pid) {
2283 exec_status_exit(&s->main_exec_status, pid, code, status);
2285 if (s->type != SERVICE_FORKING && s->control_command) {
2286 s->control_command->exec_status = s->main_exec_status;
2288 if (s->control_command->ignore)
2292 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2293 "%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status);
2294 s->failure = s->failure || !success;
2296 if (s->control_command &&
2297 s->control_command->command_next &&
2300 /* There is another command to *
2301 * execute, so let's do that. */
2303 log_debug("%s running next main command for state %s", u->meta.id, service_state_to_string(s->state));
2304 service_run_next_main(s, success);
2308 /* The service exited, so the service is officially
2311 s->control_command = NULL;
2312 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2316 case SERVICE_START_POST:
2317 case SERVICE_RELOAD:
2319 /* Need to wait until the operation is
2324 if (s->type == SERVICE_ONESHOT) {
2325 /* This was our main goal, so let's go on */
2327 service_enter_start_post(s);
2329 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2332 assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY);
2337 case SERVICE_RUNNING:
2338 service_enter_running(s, success);
2341 case SERVICE_STOP_SIGTERM:
2342 case SERVICE_STOP_SIGKILL:
2344 if (!control_pid_good(s))
2345 service_enter_stop_post(s, success);
2347 /* If there is still a control process, wait for that first */
2351 assert_not_reached("Uh, main process died at wrong time.");
2355 } else if (s->control_pid == pid) {
2359 if (s->control_command) {
2360 exec_status_exit(&s->control_command->exec_status, pid, code, status);
2362 if (s->control_command->ignore)
2366 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2367 "%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
2368 s->failure = s->failure || !success;
2370 if (s->control_command &&
2371 s->control_command->command_next &&
2374 /* There is another command to *
2375 * execute, so let's do that. */
2377 log_debug("%s running next control command for state %s", u->meta.id, service_state_to_string(s->state));
2378 service_run_next_control(s, success);
2381 /* No further commands for this step, so let's
2382 * figure out what to do next */
2384 s->control_command = NULL;
2385 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2387 log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state));
2391 case SERVICE_START_PRE:
2393 service_enter_start(s);
2395 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2399 assert(s->type == SERVICE_FORKING);
2401 /* Let's try to load the pid
2402 * file here if we can. We
2403 * ignore the return value,
2404 * since the PID file might
2405 * actually be created by a
2406 * START_POST script */
2410 service_load_pid_file(s);
2412 service_enter_start_post(s);
2414 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2418 case SERVICE_START_POST:
2419 if (success && s->pid_file && !s->main_pid_known) {
2422 /* Hmm, let's see if we can
2423 * load the pid now after the
2424 * start-post scripts got
2427 if ((r = service_load_pid_file(s)) < 0)
2428 log_warning("%s: failed to load PID file %s: %s", s->meta.id, s->pid_file, strerror(-r));
2433 case SERVICE_RELOAD:
2435 service_enter_running(s, true);
2437 service_enter_stop(s, false);
2442 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
2445 case SERVICE_STOP_SIGTERM:
2446 case SERVICE_STOP_SIGKILL:
2447 if (main_pid_good(s) <= 0)
2448 service_enter_stop_post(s, success);
2450 /* If there is still a service
2451 * process around, wait until
2452 * that one quit, too */
2455 case SERVICE_STOP_POST:
2456 case SERVICE_FINAL_SIGTERM:
2457 case SERVICE_FINAL_SIGKILL:
2458 service_enter_dead(s, success, true);
2462 assert_not_reached("Uh, control process died at wrong time.");
2467 /* Notify clients about changed exit status */
2468 unit_add_to_dbus_queue(u);
2471 static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
2472 Service *s = SERVICE(u);
2475 assert(elapsed == 1);
2477 assert(w == &s->timer_watch);
2481 case SERVICE_START_PRE:
2483 log_warning("%s operation timed out. Terminating.", u->meta.id);
2484 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2487 case SERVICE_START_POST:
2488 case SERVICE_RELOAD:
2489 log_warning("%s operation timed out. Stopping.", u->meta.id);
2490 service_enter_stop(s, false);
2494 log_warning("%s stopping timed out. Terminating.", u->meta.id);
2495 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2498 case SERVICE_STOP_SIGTERM:
2499 log_warning("%s stopping timed out. Killing.", u->meta.id);
2500 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2503 case SERVICE_STOP_SIGKILL:
2504 /* Uh, wie sent a SIGKILL and it is still not gone?
2505 * Must be something we cannot kill, so let's just be
2506 * weirded out and continue */
2508 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
2509 service_enter_stop_post(s, false);
2512 case SERVICE_STOP_POST:
2513 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
2514 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2517 case SERVICE_FINAL_SIGTERM:
2518 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
2519 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
2522 case SERVICE_FINAL_SIGKILL:
2523 log_warning("%s still around after SIGKILL (2). Entering maintenance mode.", u->meta.id);
2524 service_enter_dead(s, false, true);
2527 case SERVICE_AUTO_RESTART:
2528 log_info("%s holdoff time over, scheduling restart.", u->meta.id);
2529 service_enter_restart(s);
2533 assert_not_reached("Timeout at wrong time.");
2537 static void service_cgroup_notify_event(Unit *u) {
2538 Service *s = SERVICE(u);
2542 log_debug("%s: cgroup is empty", u->meta.id);
2546 /* Waiting for SIGCHLD is usually more interesting,
2547 * because it includes return codes/signals. Which is
2548 * why we ignore the cgroup events for most cases,
2549 * except when we don't know pid which to expect the
2552 case SERVICE_RUNNING:
2553 service_enter_running(s, true);
2561 static void service_notify_message(Unit *u, pid_t pid, char **tags) {
2562 Service *s = SERVICE(u);
2567 if (s->notify_access == NOTIFY_NONE) {
2568 log_warning("%s: Got notification message from PID %lu, but reception is disabled.",
2569 u->meta.id, (unsigned long) pid);
2573 if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
2574 log_warning("%s: Got notification message from PID %lu, but reception only permitted for PID %lu",
2575 u->meta.id, (unsigned long) pid, (unsigned long) s->main_pid);
2579 log_debug("%s: Got message", u->meta.id);
2581 /* Interpret MAINPID= */
2582 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
2583 (s->state == SERVICE_START ||
2584 s->state == SERVICE_START_POST ||
2585 s->state == SERVICE_RUNNING ||
2586 s->state == SERVICE_RELOAD)) {
2588 if (parse_pid(e + 8, &pid) < 0)
2589 log_warning("Failed to parse notification message %s", e);
2591 log_debug("%s: got %s", u->meta.id, e);
2592 service_set_main_pid(s, pid);
2596 /* Interpret READY= */
2597 if (s->type == SERVICE_NOTIFY &&
2598 s->state == SERVICE_START &&
2599 strv_find(tags, "READY=1")) {
2600 log_debug("%s: got READY=1", u->meta.id);
2602 service_enter_start_post(s);
2605 /* Interpret STATUS= */
2606 if ((e = strv_find_prefix(tags, "STATUS="))) {
2610 if (!(t = strdup(e+7))) {
2611 log_error("Failed to allocate string.");
2615 log_debug("%s: got %s", u->meta.id, e);
2617 free(s->status_text);
2620 free(s->status_text);
2621 s->status_text = NULL;
2626 /* Notify clients about changed status or main pid */
2627 unit_add_to_dbus_queue(u);
2630 static int service_enumerate(Manager *m) {
2634 char *path = NULL, *fpath = NULL, *name = NULL;
2639 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
2640 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
2645 if (asprintf(&path, "%s/%s", *p, rcnd_table[i].path) < 0) {
2653 if (!(d = opendir(path))) {
2654 if (errno != ENOENT)
2655 log_warning("opendir() failed on %s: %s", path, strerror(errno));
2660 while ((de = readdir(d))) {
2664 if (ignore_file(de->d_name))
2667 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
2670 if (strlen(de->d_name) < 4)
2673 a = undecchar(de->d_name[1]);
2674 b = undecchar(de->d_name[2]);
2681 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i].path, de->d_name) < 0) {
2686 if (access(fpath, X_OK) < 0) {
2688 if (errno != ENOENT)
2689 log_warning("access() failed on %s: %s", fpath, strerror(errno));
2695 if (!(name = sysv_translate_name(de->d_name + 3))) {
2700 if ((r = manager_load_unit_prepare(m, name, NULL, NULL, &service)) < 0) {
2701 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
2705 if (de->d_name[0] == 'S' &&
2706 (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
2707 SERVICE(service)->sysv_start_priority =
2708 MAX(a*10 + b, SERVICE(service)->sysv_start_priority);
2709 SERVICE(service)->sysv_enabled = true;
2712 manager_dispatch_load_queue(m);
2713 service = unit_follow_merge(service);
2715 /* If this is a native service, rely
2716 * on native ways to pull in a
2717 * service, don't pull it in via sysv
2719 if (service->meta.fragment_path)
2722 if (de->d_name[0] == 'S') {
2724 if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, rcnd_table[i].target, NULL, true)) < 0)
2727 } else if (de->d_name[0] == 'K' &&
2728 (rcnd_table[i].type == RUNLEVEL_DOWN ||
2729 rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
2731 /* We honour K links only for
2732 * halt/reboot. For the normal
2733 * runlevels we assume the
2735 * implicitly added by the
2736 * core logic. Also, we don't
2737 * really distuingish here
2738 * between the runlevels 0 and
2739 * 6 and just add them to the
2740 * special shutdown target. On
2741 * SUSE the boot.d/ runlevel
2742 * is also used for shutdown,
2743 * so we add links for that
2744 * too to the shutdown
2747 if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true)) < 0)
2766 static void service_bus_name_owner_change(
2769 const char *old_owner,
2770 const char *new_owner) {
2772 Service *s = SERVICE(u);
2777 assert(streq(s->bus_name, name));
2778 assert(old_owner || new_owner);
2780 if (old_owner && new_owner)
2781 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->meta.id, name, old_owner, new_owner);
2783 log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner);
2785 log_debug("%s's D-Bus name %s now registered by %s", u->meta.id, name, new_owner);
2787 s->bus_name_good = !!new_owner;
2789 if (s->type == SERVICE_DBUS) {
2791 /* service_enter_running() will figure out what to
2793 if (s->state == SERVICE_RUNNING)
2794 service_enter_running(s, true);
2795 else if (s->state == SERVICE_START && new_owner)
2796 service_enter_start_post(s);
2798 } else if (new_owner &&
2800 (s->state == SERVICE_START ||
2801 s->state == SERVICE_START_POST ||
2802 s->state == SERVICE_RUNNING ||
2803 s->state == SERVICE_RELOAD)) {
2805 /* Try to acquire PID from bus service */
2806 log_debug("Trying to acquire PID from D-Bus name...");
2808 bus_query_pid(u->meta.manager, name);
2812 static void service_bus_query_pid_done(
2817 Service *s = SERVICE(u);
2822 log_debug("%s's D-Bus name %s is now owned by process %u", u->meta.id, name, (unsigned) pid);
2824 if (s->main_pid <= 0 &&
2825 (s->state == SERVICE_START ||
2826 s->state == SERVICE_START_POST ||
2827 s->state == SERVICE_RUNNING ||
2828 s->state == SERVICE_RELOAD))
2829 service_set_main_pid(s, pid);
2832 int service_set_socket_fd(Service *s, int fd, Socket *sock) {
2836 /* This is called by the socket code when instantiating a new
2837 * service for a stream socket and the socket needs to be
2840 if (s->meta.load_state != UNIT_LOADED)
2843 if (s->socket_fd >= 0)
2846 if (s->state != SERVICE_DEAD)
2850 s->got_socket_fd = true;
2856 static void service_reset_maintenance(Unit *u) {
2857 Service *s = SERVICE(u);
2861 if (s->state == SERVICE_MAINTENANCE)
2862 service_set_state(s, SERVICE_DEAD);
2867 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
2868 [SERVICE_DEAD] = "dead",
2869 [SERVICE_START_PRE] = "start-pre",
2870 [SERVICE_START] = "start",
2871 [SERVICE_START_POST] = "start-post",
2872 [SERVICE_RUNNING] = "running",
2873 [SERVICE_EXITED] = "exited",
2874 [SERVICE_RELOAD] = "reload",
2875 [SERVICE_STOP] = "stop",
2876 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
2877 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
2878 [SERVICE_STOP_POST] = "stop-post",
2879 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
2880 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
2881 [SERVICE_MAINTENANCE] = "maintenance",
2882 [SERVICE_AUTO_RESTART] = "auto-restart",
2885 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
2887 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
2888 [SERVICE_ONCE] = "once",
2889 [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
2890 [SERVICE_RESTART_ALWAYS] = "restart-always",
2893 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
2895 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
2896 [SERVICE_SIMPLE] = "simple",
2897 [SERVICE_FORKING] = "forking",
2898 [SERVICE_ONESHOT] = "oneshot",
2899 [SERVICE_DBUS] = "dbus",
2900 [SERVICE_NOTIFY] = "notify"
2903 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
2905 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
2906 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
2907 [SERVICE_EXEC_START] = "ExecStart",
2908 [SERVICE_EXEC_START_POST] = "ExecStartPost",
2909 [SERVICE_EXEC_RELOAD] = "ExecReload",
2910 [SERVICE_EXEC_STOP] = "ExecStop",
2911 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
2914 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
2916 static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
2917 [NOTIFY_NONE] = "none",
2918 [NOTIFY_MAIN] = "main",
2919 [NOTIFY_ALL] = "all"
2922 DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
2924 const UnitVTable service_vtable = {
2925 .suffix = ".service",
2926 .show_status = true,
2928 .init = service_init,
2929 .done = service_done,
2930 .load = service_load,
2932 .coldplug = service_coldplug,
2934 .dump = service_dump,
2936 .start = service_start,
2937 .stop = service_stop,
2938 .reload = service_reload,
2940 .can_reload = service_can_reload,
2942 .serialize = service_serialize,
2943 .deserialize_item = service_deserialize_item,
2945 .active_state = service_active_state,
2946 .sub_state_to_string = service_sub_state_to_string,
2948 .check_gc = service_check_gc,
2949 .check_snapshot = service_check_snapshot,
2951 .sigchld_event = service_sigchld_event,
2952 .timer_event = service_timer_event,
2954 .reset_maintenance = service_reset_maintenance,
2956 .cgroup_notify_empty = service_cgroup_notify_event,
2957 .notify_message = service_notify_message,
2959 .bus_name_owner_change = service_bus_name_owner_change,
2960 .bus_query_pid_done = service_bus_query_pid_done,
2962 .bus_interface = "org.freedesktop.systemd1.Service",
2963 .bus_message_handler = bus_service_message_handler,
2964 .bus_invalidating_properties = bus_service_invalidating_properties,
2966 .enumerate = service_enumerate