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 #ifdef HAVE_SYSV_COMPAT
43 #define DEFAULT_SYSV_TIMEOUT_USEC (3*USEC_PER_MINUTE)
45 typedef enum RunlevelType {
54 const RunlevelType type;
56 /* Standard SysV runlevels for start-up */
57 { "rc1.d", SPECIAL_RESCUE_TARGET, RUNLEVEL_UP },
58 { "rc2.d", SPECIAL_RUNLEVEL2_TARGET, RUNLEVEL_UP },
59 { "rc3.d", SPECIAL_RUNLEVEL3_TARGET, RUNLEVEL_UP },
60 { "rc4.d", SPECIAL_RUNLEVEL4_TARGET, RUNLEVEL_UP },
61 { "rc5.d", SPECIAL_RUNLEVEL5_TARGET, RUNLEVEL_UP },
64 /* SUSE style boot.d */
65 { "boot.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
68 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU)
69 /* Debian style rcS.d */
70 { "rcS.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
73 /* Standard SysV runlevels for shutdown */
74 { "rc0.d", SPECIAL_POWEROFF_TARGET, RUNLEVEL_DOWN },
75 { "rc6.d", SPECIAL_REBOOT_TARGET, RUNLEVEL_DOWN }
77 /* Note that the order here matters, as we read the
78 directories in this order, and we want to make sure that
79 sysv_start_priority is known when we first load the
80 unit. And that value we only know from S links. Hence
81 UP/SYSINIT must be read before DOWN */
84 #define RUNLEVELS_UP "12345"
85 /* #define RUNLEVELS_DOWN "06" */
86 /* #define RUNLEVELS_BOOT "bBsS" */
89 static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
90 [SERVICE_DEAD] = UNIT_INACTIVE,
91 [SERVICE_START_PRE] = UNIT_ACTIVATING,
92 [SERVICE_START] = UNIT_ACTIVATING,
93 [SERVICE_START_POST] = UNIT_ACTIVATING,
94 [SERVICE_RUNNING] = UNIT_ACTIVE,
95 [SERVICE_EXITED] = UNIT_ACTIVE,
96 [SERVICE_RELOAD] = UNIT_RELOADING,
97 [SERVICE_STOP] = UNIT_DEACTIVATING,
98 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
99 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
100 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
101 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
102 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
103 [SERVICE_FAILED] = UNIT_FAILED,
104 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING
107 static void service_init(Unit *u) {
108 Service *s = SERVICE(u);
111 assert(u->meta.load_state == UNIT_STUB);
113 s->timeout_usec = DEFAULT_TIMEOUT_USEC;
114 s->restart_usec = DEFAULT_RESTART_USEC;
115 s->timer_watch.type = WATCH_INVALID;
116 #ifdef HAVE_SYSV_COMPAT
117 s->sysv_start_priority = -1;
121 exec_context_init(&s->exec_context);
123 RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
125 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
128 static void service_unwatch_control_pid(Service *s) {
131 if (s->control_pid <= 0)
134 unit_unwatch_pid(UNIT(s), s->control_pid);
138 static void service_unwatch_main_pid(Service *s) {
141 if (s->main_pid <= 0)
144 unit_unwatch_pid(UNIT(s), s->main_pid);
148 static int service_set_main_pid(Service *s, pid_t pid) {
159 if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid())
160 log_warning("%s: Supervising process %lu which is not our child. We'll most likely not notice when it exits.",
161 s->meta.id, (unsigned long) pid);
164 s->main_pid_known = true;
166 exec_status_start(&s->main_exec_status, pid);
171 static void service_close_socket_fd(Service *s) {
174 if (s->socket_fd < 0)
177 close_nointr_nofail(s->socket_fd);
181 static void service_connection_unref(Service *s) {
184 if (!s->accept_socket)
187 socket_connection_unref(s->accept_socket);
188 s->accept_socket = NULL;
191 static void service_done(Unit *u) {
192 Service *s = SERVICE(u);
199 #ifdef HAVE_SYSV_COMPAT
203 free(s->sysv_runlevels);
204 s->sysv_runlevels = NULL;
207 free(s->status_text);
208 s->status_text = NULL;
210 exec_context_done(&s->exec_context);
211 exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
212 s->control_command = NULL;
214 /* This will leak a process, but at least no memory or any of
216 service_unwatch_main_pid(s);
217 service_unwatch_control_pid(s);
220 unit_unwatch_bus_name(UNIT(u), s->bus_name);
225 service_close_socket_fd(s);
226 service_connection_unref(s);
228 set_free(s->configured_sockets);
230 unit_unwatch_timer(u, &s->timer_watch);
233 #ifdef HAVE_SYSV_COMPAT
234 static char *sysv_translate_name(const char *name) {
237 if (!(r = new(char, strlen(name) + sizeof(".service"))))
240 if (startswith(name, "boot."))
241 /* Drop SuSE-style boot. prefix */
242 strcpy(stpcpy(r, name + 5), ".service");
243 else if (endswith(name, ".sh"))
244 /* Drop Debian-style .sh suffix */
245 strcpy(stpcpy(r, name) - 3, ".service");
247 else if (startswith(name, "@"))
248 /* Drop Arch-style background prefix */
249 strcpy(stpcpy(r, name + 1), ".service");
252 /* Normal init scripts */
253 strcpy(stpcpy(r, name), ".service");
258 static int sysv_translate_facility(const char *name, const char *filename, char **_r) {
260 /* We silently ignore the $ prefix here. According to the LSB
261 * spec it simply indicates whether something is a
262 * standardized name or a distribution-specific one. Since we
263 * just follow what already exists and do not introduce new
264 * uses or names we don't care who introduced a new name. */
266 static const char * const table[] = {
267 /* LSB defined facilities */
268 "local_fs", SPECIAL_LOCAL_FS_TARGET,
269 "network", SPECIAL_NETWORK_TARGET,
270 "named", SPECIAL_NSS_LOOKUP_TARGET,
271 "portmap", SPECIAL_RPCBIND_TARGET,
272 "remote_fs", SPECIAL_REMOTE_FS_TARGET,
273 "syslog", SPECIAL_SYSLOG_TARGET,
274 "time", SPECIAL_RTC_SET_TARGET,
276 /* Debian extensions */
277 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU)
278 "mail-transport-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
280 "mail-transfer-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
281 "x-display-manager", SPECIAL_DISPLAY_MANAGER_SERVICE,
284 /* Fedora extensions */
285 "MTA", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
286 "smtpdaemon", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
287 "httpd", SPECIAL_HTTP_DAEMON_TARGET,
290 /* SuSE extensions */
302 n = *name == '$' ? name + 1 : name;
304 for (i = 0; i < ELEMENTSOF(table); i += 2) {
306 if (!streq(table[i], n))
312 if (!(r = strdup(table[i+1])))
318 /* If we don't know this name, fallback heuristics to figure
319 * out whether something is a target or a service alias. */
322 /* Facilities starting with $ are most likely targets */
323 r = unit_name_build(n, NULL, ".target");
324 else if (filename && streq(name, filename))
325 /* Names equalling the file name of the services are redundant */
328 /* Everything else we assume to be normal service names */
329 r = sysv_translate_name(n);
342 static int sysv_fix_order(Service *s) {
348 if (s->sysv_start_priority < 0)
351 /* For each pair of services where at least one lacks a LSB
352 * header, we use the start priority value to order things. */
354 LIST_FOREACH(units_per_type, other, s->meta.manager->units_per_type[UNIT_SERVICE]) {
357 bool special_s, special_t;
359 t = (Service*) other;
364 if (t->meta.load_state != UNIT_LOADED)
367 if (t->sysv_start_priority < 0)
370 /* If both units have modern headers we don't care
371 * about the priorities */
372 if ((s->meta.fragment_path || s->sysv_has_lsb) &&
373 (t->meta.fragment_path || t->sysv_has_lsb))
376 special_s = s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels);
377 special_t = t->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, t->sysv_runlevels);
379 if (special_t && !special_s)
381 else if (special_s && !special_t)
383 else if (t->sysv_start_priority < s->sysv_start_priority)
385 else if (t->sysv_start_priority > s->sysv_start_priority)
390 /* FIXME: Maybe we should compare the name here lexicographically? */
392 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
399 static ExecCommand *exec_command_new(const char *path, const char *arg1) {
402 if (!(c = new0(ExecCommand, 1)))
405 if (!(c->path = strdup(path))) {
410 if (!(c->argv = strv_new(path, arg1, NULL))) {
419 static int sysv_exec_commands(Service *s) {
423 assert(s->sysv_path);
425 if (!(c = exec_command_new(s->sysv_path, "start")))
427 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
429 if (!(c = exec_command_new(s->sysv_path, "stop")))
431 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
433 if (!(c = exec_command_new(s->sysv_path, "reload")))
435 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
440 static int service_load_sysv_path(Service *s, const char *path) {
451 char *short_description = NULL, *long_description = NULL, *chkconfig_description = NULL, *description;
458 if (!(f = fopen(path, "re"))) {
459 r = errno == ENOENT ? 0 : -errno;
464 if (!(s->sysv_path = strdup(path))) {
470 char l[LINE_MAX], *t;
472 if (!fgets(l, sizeof(l), f)) {
477 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
487 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
489 s->sysv_has_lsb = true;
493 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
499 t += strspn(t, WHITESPACE);
501 if (state == NORMAL) {
503 /* Try to parse Red Hat style chkconfig headers */
505 if (startswith_no_case(t, "chkconfig:")) {
507 char runlevels[16], *k;
511 if (sscanf(t+10, "%15s %i %*i",
513 &start_priority) != 2) {
515 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
519 /* A start priority gathered from the
520 * symlink farms is preferred over the
521 * data from the LSB header. */
522 if (start_priority < 0 || start_priority > 99)
523 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
524 else if (s->sysv_start_priority < 0)
525 s->sysv_start_priority = start_priority;
527 char_array_0(runlevels);
528 k = delete_chars(runlevels, WHITESPACE "-");
533 if (!(d = strdup(k))) {
538 free(s->sysv_runlevels);
539 s->sysv_runlevels = d;
542 } else if (startswith_no_case(t, "description:")) {
544 size_t k = strlen(t);
548 if (t[k-1] == '\\') {
553 if ((j = strstrip(t+12)) && *j) {
554 if (!(d = strdup(j))) {
561 free(chkconfig_description);
562 chkconfig_description = d;
564 } else if (startswith_no_case(t, "pidfile:")) {
571 if (!path_is_absolute(fn)) {
572 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
576 if (!(fn = strdup(fn))) {
585 } else if (state == DESCRIPTION) {
587 /* Try to parse Red Hat style description
590 size_t k = strlen(t);
598 if ((j = strstrip(t)) && *j) {
601 if (chkconfig_description)
602 asprintf(&d, "%s %s", chkconfig_description, j);
611 free(chkconfig_description);
612 chkconfig_description = d;
615 } else if (state == LSB || state == LSB_DESCRIPTION) {
617 if (startswith_no_case(t, "Provides:")) {
623 FOREACH_WORD_QUOTED(w, z, t+9, i) {
626 if (!(n = strndup(w, z))) {
631 r = sysv_translate_facility(n, file_name_from_path(path), &m);
640 if (unit_name_to_type(m) == UNIT_SERVICE)
641 r = unit_add_name(u, m);
643 r = unit_add_dependency_by_name(u, UNIT_BEFORE, m, NULL, true);
645 if (s->sysv_enabled) {
648 if ((k = unit_add_dependency_by_name_inverse(u, UNIT_WANTS, m, NULL, true)) < 0)
654 log_error("[%s:%u] Failed to add LSB Provides name %s, ignoring: %s", path, line, m, strerror(-r));
659 } else if (startswith_no_case(t, "Required-Start:") ||
660 startswith_no_case(t, "Should-Start:") ||
661 startswith_no_case(t, "X-Start-Before:") ||
662 startswith_no_case(t, "X-Start-After:")) {
668 FOREACH_WORD_QUOTED(w, z, strchr(t, ':')+1, i) {
671 if (!(n = strndup(w, z))) {
676 r = sysv_translate_facility(n, file_name_from_path(path), &m);
685 r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
688 log_error("[%s:%u] Failed to add dependency on %s, ignoring: %s", path, line, m, strerror(-r));
692 } else if (startswith_no_case(t, "Default-Start:")) {
697 k = delete_chars(t+14, WHITESPACE "-");
700 if (!(d = strdup(k))) {
705 free(s->sysv_runlevels);
706 s->sysv_runlevels = d;
709 } else if (startswith_no_case(t, "Description:")) {
712 state = LSB_DESCRIPTION;
714 if ((j = strstrip(t+12)) && *j) {
715 if (!(d = strdup(j))) {
722 free(long_description);
723 long_description = d;
725 } else if (startswith_no_case(t, "Short-Description:")) {
730 if ((j = strstrip(t+18)) && *j) {
731 if (!(d = strdup(j))) {
738 free(short_description);
739 short_description = d;
741 } else if (startswith_no_case(t, "X-Interactive:")) {
744 if ((b = parse_boolean(strstrip(t+14))) < 0) {
745 log_warning("[%s:%u] Couldn't parse interactive flag. Ignoring.", path, line);
750 s->exec_context.std_input = EXEC_INPUT_TTY;
752 s->exec_context.std_input = EXEC_INPUT_NULL;
754 } else if (state == LSB_DESCRIPTION) {
756 if (startswith(l, "#\t") || startswith(l, "# ")) {
759 if ((j = strstrip(t)) && *j) {
762 if (long_description)
763 asprintf(&d, "%s %s", long_description, t);
772 free(long_description);
773 long_description = d;
782 if ((r = sysv_exec_commands(s)) < 0)
785 if (s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
786 /* If there a runlevels configured for this service
787 * but none of the standard ones, then we assume this
788 * is some special kind of service (which might be
789 * needed for early boot) and don't create any links
792 s->meta.default_dependencies = false;
794 /* Don't timeout special services during boot (like fsck) */
797 s->timeout_usec = DEFAULT_SYSV_TIMEOUT_USEC;
799 /* Special setting for all SysV services */
800 s->type = SERVICE_FORKING;
801 s->remain_after_exit = true;
802 s->restart = SERVICE_RESTART_NO;
803 s->exec_context.std_output =
804 (s->meta.manager->sysv_console || s->exec_context.std_input == EXEC_INPUT_TTY)
805 ? EXEC_OUTPUT_TTY : EXEC_OUTPUT_NULL;
806 s->exec_context.kill_mode = KILL_PROCESS_GROUP;
808 /* We use the long description only if
809 * no short description is set. */
811 if (short_description)
812 description = short_description;
813 else if (chkconfig_description)
814 description = chkconfig_description;
815 else if (long_description)
816 description = long_description;
823 if (!(d = strappend("LSB: ", description))) {
828 u->meta.description = d;
831 u->meta.load_state = UNIT_LOADED;
839 free(short_description);
840 free(long_description);
841 free(chkconfig_description);
846 static int service_load_sysv_name(Service *s, const char *name) {
852 /* For SysV services we strip the boot. or .sh
853 * prefixes/suffixes. */
854 if (startswith(name, "boot.") ||
855 endswith(name, ".sh.service"))
858 STRV_FOREACH(p, s->meta.manager->lookup_paths.sysvinit_path) {
862 if (asprintf(&path, "%s/%s", *p, name) < 0)
865 assert(endswith(path, ".service"));
866 path[strlen(path)-8] = 0;
868 r = service_load_sysv_path(s, path);
870 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
871 /* Try Debian style xxx.sh source'able init scripts */
873 r = service_load_sysv_path(s, path);
878 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
879 /* Try SUSE style boot.xxx init scripts */
881 if (asprintf(&path, "%s/boot.%s", *p, name) < 0)
884 path[strlen(path)-8] = 0;
885 r = service_load_sysv_path(s, path);
892 if ((s->meta.load_state != UNIT_STUB))
899 static int service_load_sysv(Service *s) {
906 /* Load service data from SysV init scripts, preferably with
909 if (strv_isempty(s->meta.manager->lookup_paths.sysvinit_path))
912 if ((t = s->meta.id))
913 if ((r = service_load_sysv_name(s, t)) < 0)
916 if (s->meta.load_state == UNIT_STUB)
917 SET_FOREACH(t, s->meta.names, i) {
921 if ((r = service_load_sysv_name(s, t)) < 0)
924 if (s->meta.load_state != UNIT_STUB)
932 static int fsck_fix_order(Service *s) {
938 if (s->fsck_passno <= 0)
941 /* For each pair of services where both have an fsck priority
942 * we order things based on it. */
944 LIST_FOREACH(units_per_type, other, s->meta.manager->units_per_type[UNIT_SERVICE]) {
948 t = (Service*) other;
953 if (t->meta.load_state != UNIT_LOADED)
956 if (t->fsck_passno <= 0)
959 if (t->fsck_passno < s->fsck_passno)
961 else if (t->fsck_passno > s->fsck_passno)
966 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
973 static int service_verify(Service *s) {
976 if (s->meta.load_state != UNIT_LOADED)
979 if (!s->exec_command[SERVICE_EXEC_START]) {
980 log_error("%s lacks ExecStart setting. Refusing.", s->meta.id);
984 if (s->type != SERVICE_ONESHOT &&
985 s->exec_command[SERVICE_EXEC_START]->command_next) {
986 log_error("%s has more than one ExecStart setting, which is only allowed for Type=oneshot services. Refusing.", s->meta.id);
990 if (s->type == SERVICE_DBUS && !s->bus_name) {
991 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", s->meta.id);
995 if (s->exec_context.pam_name && s->exec_context.kill_mode != KILL_CONTROL_GROUP) {
996 log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", s->meta.id);
1003 static int service_add_default_dependencies(Service *s) {
1008 /* Add a number of automatic dependencies useful for the
1009 * majority of services. */
1011 /* First, pull in base system */
1012 if (s->meta.manager->running_as == MANAGER_SYSTEM) {
1014 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
1017 } else if (s->meta.manager->running_as == MANAGER_SESSION) {
1019 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SOCKETS_TARGET, NULL, true)) < 0)
1023 /* Second, activate normal shutdown */
1024 return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTED_BY, SPECIAL_SHUTDOWN_TARGET, NULL, true);
1027 static int service_load(Unit *u) {
1029 Service *s = SERVICE(u);
1033 /* Load a .service file */
1034 if ((r = unit_load_fragment(u)) < 0)
1037 #ifdef HAVE_SYSV_COMPAT
1038 /* Load a classic init script as a fallback, if we couldn't find anything */
1039 if (u->meta.load_state == UNIT_STUB)
1040 if ((r = service_load_sysv(s)) < 0)
1044 /* Still nothing found? Then let's give up */
1045 if (u->meta.load_state == UNIT_STUB)
1048 /* We were able to load something, then let's add in the
1049 * dropin directories. */
1050 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
1053 /* This is a new unit? Then let's add in some extras */
1054 if (u->meta.load_state == UNIT_LOADED) {
1055 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
1058 if ((r = unit_add_default_cgroup(u)) < 0)
1061 #ifdef HAVE_SYSV_COMPAT
1062 if ((r = sysv_fix_order(s)) < 0)
1066 if ((r = fsck_fix_order(s)) < 0)
1070 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
1073 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
1074 s->notify_access = NOTIFY_MAIN;
1076 if (s->type == SERVICE_DBUS || s->bus_name)
1077 if ((r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_DBUS_TARGET, NULL, true)) < 0)
1080 if (s->meta.default_dependencies)
1081 if ((r = service_add_default_dependencies(s)) < 0)
1085 return service_verify(s);
1088 static void service_dump(Unit *u, FILE *f, const char *prefix) {
1090 ServiceExecCommand c;
1091 Service *s = SERVICE(u);
1092 const char *prefix2;
1097 p2 = strappend(prefix, "\t");
1098 prefix2 = p2 ? p2 : prefix;
1101 "%sService State: %s\n"
1102 "%sPermissionsStartOnly: %s\n"
1103 "%sRootDirectoryStartOnly: %s\n"
1104 "%sRemainAfterExit: %s\n"
1107 "%sNotifyAccess: %s\n",
1108 prefix, service_state_to_string(s->state),
1109 prefix, yes_no(s->permissions_start_only),
1110 prefix, yes_no(s->root_directory_start_only),
1111 prefix, yes_no(s->remain_after_exit),
1112 prefix, service_type_to_string(s->type),
1113 prefix, service_restart_to_string(s->restart),
1114 prefix, notify_access_to_string(s->notify_access));
1116 if (s->control_pid > 0)
1118 "%sControl PID: %lu\n",
1119 prefix, (unsigned long) s->control_pid);
1121 if (s->main_pid > 0)
1123 "%sMain PID: %lu\n",
1124 prefix, (unsigned long) s->main_pid);
1129 prefix, s->pid_file);
1134 "%sBus Name Good: %s\n",
1135 prefix, s->bus_name,
1136 prefix, yes_no(s->bus_name_good));
1138 exec_context_dump(&s->exec_context, f, prefix);
1140 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
1142 if (!s->exec_command[c])
1145 fprintf(f, "%s-> %s:\n",
1146 prefix, service_exec_command_to_string(c));
1148 exec_command_dump_list(s->exec_command[c], f, prefix2);
1151 #ifdef HAVE_SYSV_COMPAT
1154 "%sSysV Init Script Path: %s\n"
1155 "%sSysV Init Script has LSB Header: %s\n"
1156 "%sSysVEnabled: %s\n",
1157 prefix, s->sysv_path,
1158 prefix, yes_no(s->sysv_has_lsb),
1159 prefix, yes_no(s->sysv_enabled));
1161 if (s->sysv_start_priority >= 0)
1163 "%sSysVStartPriority: %i\n",
1164 prefix, s->sysv_start_priority);
1166 if (s->sysv_runlevels)
1167 fprintf(f, "%sSysVRunLevels: %s\n",
1168 prefix, s->sysv_runlevels);
1171 if (s->fsck_passno > 0)
1173 "%sFsckPassNo: %i\n",
1174 prefix, s->fsck_passno);
1177 fprintf(f, "%sStatus Text: %s\n",
1178 prefix, s->status_text);
1183 static int service_load_pid_file(Service *s) {
1190 if (s->main_pid_known)
1193 assert(s->main_pid <= 0);
1198 if ((r = read_one_line_file(s->pid_file, &k)) < 0)
1201 r = parse_pid(k, &pid);
1207 if (kill(pid, 0) < 0 && errno != EPERM) {
1208 log_warning("PID %lu read from file %s does not exist. Your service or init script might be broken.",
1209 (unsigned long) pid, s->pid_file);
1213 if ((r = service_set_main_pid(s, pid)) < 0)
1216 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1217 /* FIXME: we need to do something here */
1223 static int service_get_sockets(Service *s, Set **_set) {
1232 if (s->socket_fd >= 0)
1235 if (!set_isempty(s->configured_sockets))
1238 /* Collects all Socket objects that belong to this
1239 * service. Note that a service might have multiple sockets
1240 * via multiple names. */
1242 if (!(set = set_new(NULL, NULL)))
1245 SET_FOREACH(t, s->meta.names, i) {
1249 /* Look for all socket objects that go by any of our
1250 * units and collect their fds */
1252 if (!(k = unit_name_change_suffix(t, ".socket"))) {
1257 p = manager_get_unit(s->meta.manager, k);
1263 if ((r = set_put(set, p)) < 0)
1275 static int service_notify_sockets_dead(Service *s) {
1277 Set *set, *free_set = NULL;
1283 /* Notifies all our sockets when we die */
1285 if (s->socket_fd >= 0)
1288 if (!set_isempty(s->configured_sockets))
1289 set = s->configured_sockets;
1291 if ((r = service_get_sockets(s, &free_set)) < 0)
1297 SET_FOREACH(sock, set, i)
1298 socket_notify_service_dead(sock);
1305 static void service_set_state(Service *s, ServiceState state) {
1306 ServiceState old_state;
1309 old_state = s->state;
1312 if (state != SERVICE_START_PRE &&
1313 state != SERVICE_START &&
1314 state != SERVICE_START_POST &&
1315 state != SERVICE_RELOAD &&
1316 state != SERVICE_STOP &&
1317 state != SERVICE_STOP_SIGTERM &&
1318 state != SERVICE_STOP_SIGKILL &&
1319 state != SERVICE_STOP_POST &&
1320 state != SERVICE_FINAL_SIGTERM &&
1321 state != SERVICE_FINAL_SIGKILL &&
1322 state != SERVICE_AUTO_RESTART)
1323 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1325 if (state != SERVICE_START &&
1326 state != SERVICE_START_POST &&
1327 state != SERVICE_RUNNING &&
1328 state != SERVICE_RELOAD &&
1329 state != SERVICE_STOP &&
1330 state != SERVICE_STOP_SIGTERM &&
1331 state != SERVICE_STOP_SIGKILL)
1332 service_unwatch_main_pid(s);
1334 if (state != SERVICE_START_PRE &&
1335 state != SERVICE_START &&
1336 state != SERVICE_START_POST &&
1337 state != SERVICE_RELOAD &&
1338 state != SERVICE_STOP &&
1339 state != SERVICE_STOP_SIGTERM &&
1340 state != SERVICE_STOP_SIGKILL &&
1341 state != SERVICE_STOP_POST &&
1342 state != SERVICE_FINAL_SIGTERM &&
1343 state != SERVICE_FINAL_SIGKILL) {
1344 service_unwatch_control_pid(s);
1345 s->control_command = NULL;
1346 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1349 if (state == SERVICE_DEAD ||
1350 state == SERVICE_STOP ||
1351 state == SERVICE_STOP_SIGTERM ||
1352 state == SERVICE_STOP_SIGKILL ||
1353 state == SERVICE_STOP_POST ||
1354 state == SERVICE_FINAL_SIGTERM ||
1355 state == SERVICE_FINAL_SIGKILL ||
1356 state == SERVICE_FAILED ||
1357 state == SERVICE_AUTO_RESTART)
1358 service_notify_sockets_dead(s);
1360 if (state != SERVICE_START_PRE &&
1361 state != SERVICE_START &&
1362 state != SERVICE_START_POST &&
1363 state != SERVICE_RUNNING &&
1364 state != SERVICE_RELOAD &&
1365 state != SERVICE_STOP &&
1366 state != SERVICE_STOP_SIGTERM &&
1367 state != SERVICE_STOP_SIGKILL &&
1368 state != SERVICE_STOP_POST &&
1369 state != SERVICE_FINAL_SIGTERM &&
1370 state != SERVICE_FINAL_SIGKILL &&
1371 !(state == SERVICE_DEAD && s->meta.job)) {
1372 service_close_socket_fd(s);
1373 service_connection_unref(s);
1376 /* For the inactive states unit_notify() will trim the cgroup,
1377 * but for exit we have to do that ourselves... */
1378 if (state == SERVICE_EXITED)
1379 cgroup_bonding_trim_list(s->meta.cgroup_bondings, true);
1381 if (old_state != state)
1382 log_debug("%s changed %s -> %s", s->meta.id, service_state_to_string(old_state), service_state_to_string(state));
1384 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
1387 static int service_coldplug(Unit *u) {
1388 Service *s = SERVICE(u);
1392 assert(s->state == SERVICE_DEAD);
1394 if (s->deserialized_state != s->state) {
1396 if (s->deserialized_state == SERVICE_START_PRE ||
1397 s->deserialized_state == SERVICE_START ||
1398 s->deserialized_state == SERVICE_START_POST ||
1399 s->deserialized_state == SERVICE_RELOAD ||
1400 s->deserialized_state == SERVICE_STOP ||
1401 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1402 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1403 s->deserialized_state == SERVICE_STOP_POST ||
1404 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1405 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
1406 s->deserialized_state == SERVICE_AUTO_RESTART) {
1408 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1411 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1413 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1418 if ((s->deserialized_state == SERVICE_START &&
1419 (s->type == SERVICE_FORKING ||
1420 s->type == SERVICE_DBUS ||
1421 s->type == SERVICE_ONESHOT ||
1422 s->type == SERVICE_NOTIFY)) ||
1423 s->deserialized_state == SERVICE_START_POST ||
1424 s->deserialized_state == SERVICE_RUNNING ||
1425 s->deserialized_state == SERVICE_RELOAD ||
1426 s->deserialized_state == SERVICE_STOP ||
1427 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1428 s->deserialized_state == SERVICE_STOP_SIGKILL)
1429 if (s->main_pid > 0)
1430 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1433 if (s->deserialized_state == SERVICE_START_PRE ||
1434 s->deserialized_state == SERVICE_START ||
1435 s->deserialized_state == SERVICE_START_POST ||
1436 s->deserialized_state == SERVICE_RELOAD ||
1437 s->deserialized_state == SERVICE_STOP ||
1438 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1439 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1440 s->deserialized_state == SERVICE_STOP_POST ||
1441 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1442 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1443 if (s->control_pid > 0)
1444 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1447 service_set_state(s, s->deserialized_state);
1453 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1457 unsigned rn_fds = 0;
1458 Set *set, *free_set = NULL;
1465 if (s->socket_fd >= 0)
1468 if (!set_isempty(s->configured_sockets))
1469 set = s->configured_sockets;
1471 if ((r = service_get_sockets(s, &free_set)) < 0)
1477 SET_FOREACH(sock, set, i) {
1481 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
1493 if (!(t = new(int, rn_fds+cn_fds))) {
1499 memcpy(t, rfds, rn_fds);
1500 memcpy(t+rn_fds, cfds, cn_fds);
1505 rn_fds = rn_fds+cn_fds;
1523 static int service_spawn(
1528 bool apply_permissions,
1530 bool apply_tty_stdin,
1531 bool set_notify_socket,
1536 int *fds = NULL, *fdsbuf = NULL;
1537 unsigned n_fds = 0, n_env = 0;
1538 char **argv = NULL, **final_env = NULL, **our_env = NULL;
1545 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1546 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1547 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1549 if (s->socket_fd >= 0) {
1550 fds = &s->socket_fd;
1553 if ((r = service_collect_fds(s, &fdsbuf, &n_fds)) < 0)
1560 if (timeout && s->timeout_usec) {
1561 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1564 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1566 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1571 if (!(our_env = new0(char*, 4))) {
1576 if (set_notify_socket)
1577 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=@%s", s->meta.manager->notify_socket) < 0) {
1582 if (s->main_pid > 0)
1583 if (asprintf(our_env + n_env++, "MAINPID=%lu", (unsigned long) s->main_pid) < 0) {
1588 /* Make sure we set TERM=linux for SysV scripts, since some
1589 * require it to be set from the kernel */
1590 if (s->sysv_path && !strv_env_get(s->meta.manager->environment, "TERM"))
1591 if (!(our_env[n_env++] = strdup("TERM=linux"))) {
1596 if (!(final_env = strv_env_merge(2,
1597 s->meta.manager->environment,
1612 s->meta.manager->confirm_spawn,
1613 s->meta.cgroup_bondings,
1620 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1621 /* FIXME: we need to do something here */
1627 strv_free(final_env);
1637 strv_free(final_env);
1640 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1645 static int main_pid_good(Service *s) {
1648 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1651 /* If we know the pid file, then lets just check if it is
1653 if (s->main_pid_known)
1654 return s->main_pid > 0;
1656 /* We don't know the pid */
1660 static int control_pid_good(Service *s) {
1663 return s->control_pid > 0;
1666 static int cgroup_good(Service *s) {
1671 if ((r = cgroup_bonding_is_empty_list(s->meta.cgroup_bondings)) < 0)
1677 static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1684 if (allow_restart &&
1685 !s->forbid_restart &&
1686 (s->restart == SERVICE_RESTART_ALWAYS ||
1687 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure) ||
1688 (s->restart == SERVICE_RESTART_ON_FAILURE && s->failure) ||
1689 (s->restart == SERVICE_RESTART_ON_ABORT && s->failure &&
1690 (s->main_exec_status.code == CLD_KILLED ||
1691 s->main_exec_status.code == CLD_DUMPED)))) {
1693 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
1696 service_set_state(s, SERVICE_AUTO_RESTART);
1698 service_set_state(s, s->failure ? SERVICE_FAILED : SERVICE_DEAD);
1700 s->forbid_restart = false;
1705 log_warning("%s failed to run install restart timer: %s", s->meta.id, strerror(-r));
1706 service_enter_dead(s, false, false);
1709 static void service_enter_signal(Service *s, ServiceState state, bool success);
1711 static void service_enter_stop_post(Service *s, bool success) {
1718 service_unwatch_control_pid(s);
1720 s->control_command_id = SERVICE_EXEC_STOP_POST;
1721 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
1722 if ((r = service_spawn(s,
1726 !s->permissions_start_only,
1727 !s->root_directory_start_only,
1730 &s->control_pid)) < 0)
1734 service_set_state(s, SERVICE_STOP_POST);
1736 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
1741 log_warning("%s failed to run 'stop-post' task: %s", s->meta.id, strerror(-r));
1742 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1745 static void service_enter_signal(Service *s, ServiceState state, bool success) {
1747 Set *pid_set = NULL;
1748 bool wait_for_exit = false;
1755 if (s->exec_context.kill_mode != KILL_NONE) {
1756 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? s->exec_context.kill_signal : SIGKILL;
1758 if (s->main_pid > 0) {
1759 if (kill(s->exec_context.kill_mode == KILL_PROCESS_GROUP ?
1761 s->main_pid, sig) < 0 && errno != ESRCH)
1763 log_warning("Failed to kill main process %li: %m", (long) s->main_pid);
1765 wait_for_exit = true;
1768 if (s->control_pid > 0) {
1769 if (kill(s->exec_context.kill_mode == KILL_PROCESS_GROUP ?
1771 s->control_pid, sig) < 0 && errno != ESRCH)
1773 log_warning("Failed to kill control process %li: %m", (long) s->control_pid);
1775 wait_for_exit = true;
1778 if (s->exec_context.kill_mode == KILL_CONTROL_GROUP) {
1780 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) {
1785 /* Exclude the main/control pids from being killed via the cgroup */
1786 if (s->main_pid > 0)
1787 if ((r = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0)
1790 if (s->control_pid > 0)
1791 if ((r = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0)
1794 if ((r = cgroup_bonding_kill_list(s->meta.cgroup_bondings, sig, pid_set)) < 0) {
1795 if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
1796 log_warning("Failed to kill control group: %s", strerror(-r));
1798 wait_for_exit = true;
1804 if (wait_for_exit) {
1805 if (s->timeout_usec > 0)
1806 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1809 service_set_state(s, state);
1810 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1811 service_enter_stop_post(s, true);
1813 service_enter_dead(s, true, true);
1818 log_warning("%s failed to kill processes: %s", s->meta.id, strerror(-r));
1820 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1821 service_enter_stop_post(s, false);
1823 service_enter_dead(s, false, true);
1829 static void service_enter_stop(Service *s, bool success) {
1837 service_unwatch_control_pid(s);
1839 s->control_command_id = SERVICE_EXEC_STOP;
1840 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
1841 if ((r = service_spawn(s,
1845 !s->permissions_start_only,
1846 !s->root_directory_start_only,
1849 &s->control_pid)) < 0)
1852 service_set_state(s, SERVICE_STOP);
1854 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1859 log_warning("%s failed to run 'stop' task: %s", s->meta.id, strerror(-r));
1860 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1863 static void service_enter_running(Service *s, bool success) {
1864 int main_pid_ok, cgroup_ok;
1870 main_pid_ok = main_pid_good(s);
1871 cgroup_ok = cgroup_good(s);
1873 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
1874 (s->bus_name_good || s->type != SERVICE_DBUS))
1875 service_set_state(s, SERVICE_RUNNING);
1876 else if (s->remain_after_exit)
1877 service_set_state(s, SERVICE_EXITED);
1879 service_enter_stop(s, true);
1882 static void service_enter_start_post(Service *s) {
1886 service_unwatch_control_pid(s);
1888 s->control_command_id = SERVICE_EXEC_START_POST;
1889 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
1890 if ((r = service_spawn(s,
1894 !s->permissions_start_only,
1895 !s->root_directory_start_only,
1898 &s->control_pid)) < 0)
1901 service_set_state(s, SERVICE_START_POST);
1903 service_enter_running(s, true);
1908 log_warning("%s failed to run 'start-post' task: %s", s->meta.id, strerror(-r));
1909 service_enter_stop(s, false);
1912 static void service_enter_start(Service *s) {
1918 assert(s->exec_command[SERVICE_EXEC_START]);
1919 assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
1921 if (s->type == SERVICE_FORKING)
1922 service_unwatch_control_pid(s);
1924 service_unwatch_main_pid(s);
1926 s->control_command_id = SERVICE_EXEC_START;
1927 s->control_command = s->exec_command[SERVICE_EXEC_START];
1929 if ((r = service_spawn(s,
1931 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY,
1936 s->notify_access != NOTIFY_NONE,
1940 if (s->type == SERVICE_SIMPLE) {
1941 /* For simple services we immediately start
1942 * the START_POST binaries. */
1944 service_set_main_pid(s, pid);
1945 service_enter_start_post(s);
1947 } else if (s->type == SERVICE_FORKING) {
1949 /* For forking services we wait until the start
1950 * process exited. */
1952 s->control_pid = pid;
1953 service_set_state(s, SERVICE_START);
1955 } else if (s->type == SERVICE_ONESHOT ||
1956 s->type == SERVICE_DBUS ||
1957 s->type == SERVICE_NOTIFY) {
1959 /* For oneshot services we wait until the start
1960 * process exited, too, but it is our main process. */
1962 /* For D-Bus services we know the main pid right away,
1963 * but wait for the bus name to appear on the
1964 * bus. Notify services are similar. */
1966 service_set_main_pid(s, pid);
1967 service_set_state(s, SERVICE_START);
1969 assert_not_reached("Unknown service type");
1974 log_warning("%s failed to run 'start' task: %s", s->meta.id, strerror(-r));
1975 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1978 static void service_enter_start_pre(Service *s) {
1983 service_unwatch_control_pid(s);
1985 s->control_command_id = SERVICE_EXEC_START_PRE;
1986 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
1987 if ((r = service_spawn(s,
1991 !s->permissions_start_only,
1992 !s->root_directory_start_only,
1995 &s->control_pid)) < 0)
1998 service_set_state(s, SERVICE_START_PRE);
2000 service_enter_start(s);
2005 log_warning("%s failed to run 'start-pre' task: %s", s->meta.id, strerror(-r));
2006 service_enter_dead(s, false, true);
2009 static void service_enter_restart(Service *s) {
2014 dbus_error_init(&error);
2016 service_enter_dead(s, true, false);
2018 if ((r = manager_add_job(s->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, &error, NULL)) < 0)
2021 log_debug("%s scheduled restart job.", s->meta.id);
2025 log_warning("%s failed to schedule restart job: %s", s->meta.id, bus_error(&error, -r));
2026 service_enter_dead(s, false, false);
2028 dbus_error_free(&error);
2031 static void service_enter_reload(Service *s) {
2036 service_unwatch_control_pid(s);
2038 s->control_command_id = SERVICE_EXEC_RELOAD;
2039 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
2040 if ((r = service_spawn(s,
2044 !s->permissions_start_only,
2045 !s->root_directory_start_only,
2048 &s->control_pid)) < 0)
2051 service_set_state(s, SERVICE_RELOAD);
2053 service_enter_running(s, true);
2058 log_warning("%s failed to run 'reload' task: %s", s->meta.id, strerror(-r));
2059 service_enter_stop(s, false);
2062 static void service_run_next_control(Service *s, bool success) {
2066 assert(s->control_command);
2067 assert(s->control_command->command_next);
2072 assert(s->control_command_id != SERVICE_EXEC_START);
2074 s->control_command = s->control_command->command_next;
2075 service_unwatch_control_pid(s);
2077 if ((r = service_spawn(s,
2081 !s->permissions_start_only,
2082 !s->root_directory_start_only,
2083 s->control_command_id == SERVICE_EXEC_START_PRE ||
2084 s->control_command_id == SERVICE_EXEC_STOP_POST,
2086 &s->control_pid)) < 0)
2092 log_warning("%s failed to run next control task: %s", s->meta.id, strerror(-r));
2094 if (s->state == SERVICE_START_PRE)
2095 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2096 else if (s->state == SERVICE_STOP)
2097 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2098 else if (s->state == SERVICE_STOP_POST)
2099 service_enter_dead(s, false, true);
2101 service_enter_stop(s, false);
2104 static void service_run_next_main(Service *s, bool success) {
2109 assert(s->control_command);
2110 assert(s->control_command->command_next);
2115 assert(s->control_command_id == SERVICE_EXEC_START);
2116 assert(s->type == SERVICE_ONESHOT);
2118 s->control_command = s->control_command->command_next;
2119 service_unwatch_main_pid(s);
2121 if ((r = service_spawn(s,
2128 s->notify_access != NOTIFY_NONE,
2132 service_set_main_pid(s, pid);
2137 log_warning("%s failed to run next main task: %s", s->meta.id, strerror(-r));
2138 service_enter_stop(s, false);
2141 static int service_start(Unit *u) {
2142 Service *s = SERVICE(u);
2146 /* We cannot fulfill this request right now, try again later
2148 if (s->state == SERVICE_STOP ||
2149 s->state == SERVICE_STOP_SIGTERM ||
2150 s->state == SERVICE_STOP_SIGKILL ||
2151 s->state == SERVICE_STOP_POST ||
2152 s->state == SERVICE_FINAL_SIGTERM ||
2153 s->state == SERVICE_FINAL_SIGKILL)
2156 /* Already on it! */
2157 if (s->state == SERVICE_START_PRE ||
2158 s->state == SERVICE_START ||
2159 s->state == SERVICE_START_POST)
2162 assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED || s->state == SERVICE_AUTO_RESTART);
2164 /* Make sure we don't enter a busy loop of some kind. */
2165 if (!ratelimit_test(&s->ratelimit)) {
2166 log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
2171 s->main_pid_known = false;
2172 s->forbid_restart = false;
2174 service_enter_start_pre(s);
2178 static int service_stop(Unit *u) {
2179 Service *s = SERVICE(u);
2183 /* This is a user request, so don't do restarts on this
2185 s->forbid_restart = true;
2188 if (s->state == SERVICE_STOP ||
2189 s->state == SERVICE_STOP_SIGTERM ||
2190 s->state == SERVICE_STOP_SIGKILL ||
2191 s->state == SERVICE_STOP_POST ||
2192 s->state == SERVICE_FINAL_SIGTERM ||
2193 s->state == SERVICE_FINAL_SIGKILL)
2196 /* Don't allow a restart */
2197 if (s->state == SERVICE_AUTO_RESTART) {
2198 service_set_state(s, SERVICE_DEAD);
2202 /* If there's already something running we go directly into
2204 if (s->state == SERVICE_START_PRE ||
2205 s->state == SERVICE_START ||
2206 s->state == SERVICE_START_POST ||
2207 s->state == SERVICE_RELOAD) {
2208 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
2212 assert(s->state == SERVICE_RUNNING ||
2213 s->state == SERVICE_EXITED);
2215 service_enter_stop(s, true);
2219 static int service_reload(Unit *u) {
2220 Service *s = SERVICE(u);
2224 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
2226 service_enter_reload(s);
2230 static bool service_can_reload(Unit *u) {
2231 Service *s = SERVICE(u);
2235 return !!s->exec_command[SERVICE_EXEC_RELOAD];
2238 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2239 Service *s = SERVICE(u);
2245 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2246 unit_serialize_item(u, f, "failure", yes_no(s->failure));
2248 if (s->control_pid > 0)
2249 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
2251 if (s->main_pid_known && s->main_pid > 0)
2252 unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
2254 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2257 unit_serialize_item(u, f, "status-text", s->status_text);
2259 /* There's a minor uncleanliness here: if there are multiple
2260 * commands attached here, we will start from the first one
2262 if (s->control_command_id >= 0)
2263 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
2265 if (s->socket_fd >= 0) {
2268 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2271 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2274 if (s->main_exec_status.pid > 0) {
2275 unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu", (unsigned long) s->main_exec_status.pid);
2277 if (s->main_exec_status.start_timestamp.realtime > 0) {
2278 unit_serialize_item_format(u, f, "main-exec-status-start-realtime",
2279 "%llu", (unsigned long long) s->main_exec_status.start_timestamp.realtime);
2281 unit_serialize_item_format(u, f, "main-exec-status-start-monotonic",
2282 "%llu", (unsigned long long) s->main_exec_status.start_timestamp.monotonic);
2285 if (s->main_exec_status.exit_timestamp.realtime > 0) {
2286 unit_serialize_item_format(u, f, "main-exec-status-exit-realtime",
2287 "%llu", (unsigned long long) s->main_exec_status.exit_timestamp.realtime);
2288 unit_serialize_item_format(u, f, "main-exec-status-exit-monotonic",
2289 "%llu", (unsigned long long) s->main_exec_status.exit_timestamp.monotonic);
2291 unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code);
2292 unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status);
2299 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2300 Service *s = SERVICE(u);
2307 if (streq(key, "state")) {
2310 if ((state = service_state_from_string(value)) < 0)
2311 log_debug("Failed to parse state value %s", value);
2313 s->deserialized_state = state;
2314 } else if (streq(key, "failure")) {
2317 if ((b = parse_boolean(value)) < 0)
2318 log_debug("Failed to parse failure value %s", value);
2320 s->failure = b || s->failure;
2321 } else if (streq(key, "control-pid")) {
2324 if (parse_pid(value, &pid) < 0)
2325 log_debug("Failed to parse control-pid value %s", value);
2327 s->control_pid = pid;
2328 } else if (streq(key, "main-pid")) {
2331 if (parse_pid(value, &pid) < 0)
2332 log_debug("Failed to parse main-pid value %s", value);
2334 service_set_main_pid(s, (pid_t) pid);
2335 } else if (streq(key, "main-pid-known")) {
2338 if ((b = parse_boolean(value)) < 0)
2339 log_debug("Failed to parse main-pid-known value %s", value);
2341 s->main_pid_known = b;
2342 } else if (streq(key, "status-text")) {
2345 if ((t = strdup(value))) {
2346 free(s->status_text);
2350 } else if (streq(key, "control-command")) {
2351 ServiceExecCommand id;
2353 if ((id = service_exec_command_from_string(value)) < 0)
2354 log_debug("Failed to parse exec-command value %s", value);
2356 s->control_command_id = id;
2357 s->control_command = s->exec_command[id];
2359 } else if (streq(key, "socket-fd")) {
2362 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2363 log_debug("Failed to parse socket-fd value %s", value);
2366 if (s->socket_fd >= 0)
2367 close_nointr_nofail(s->socket_fd);
2368 s->socket_fd = fdset_remove(fds, fd);
2370 } else if (streq(key, "main-exec-status-pid")) {
2373 if (parse_pid(value, &pid) < 0)
2374 log_debug("Failed to parse main-exec-status-pid value %s", value);
2376 s->main_exec_status.pid = pid;
2377 } else if (streq(key, "main-exec-status-code")) {
2380 if (safe_atoi(value, &i) < 0)
2381 log_debug("Failed to parse main-exec-status-code value %s", value);
2383 s->main_exec_status.code = i;
2384 } else if (streq(key, "main-exec-status-status")) {
2387 if (safe_atoi(value, &i) < 0)
2388 log_debug("Failed to parse main-exec-status-status value %s", value);
2390 s->main_exec_status.status = i;
2391 } else if (streq(key, "main-exec-status-start-realtime")) {
2394 if (safe_atou64(value, &k) < 0)
2395 log_debug("Failed to parse main-exec-status-start-realtime value %s", value);
2397 s->main_exec_status.start_timestamp.realtime = (usec_t) k;
2398 } else if (streq(key, "main-exec-status-start-monotonic")) {
2401 if (safe_atou64(value, &k) < 0)
2402 log_debug("Failed to parse main-exec-status-start-monotonic value %s", value);
2404 s->main_exec_status.start_timestamp.monotonic = (usec_t) k;
2405 } else if (streq(key, "main-exec-status-exit-realtime")) {
2408 if (safe_atou64(value, &k) < 0)
2409 log_debug("Failed to parse main-exec-status-exit-realtime value %s", value);
2411 s->main_exec_status.exit_timestamp.realtime = (usec_t) k;
2412 } else if (streq(key, "main-exec-status-exit-monotonic")) {
2415 if (safe_atou64(value, &k) < 0)
2416 log_debug("Failed to parse main-exec-status-exit-monotonic value %s", value);
2418 s->main_exec_status.exit_timestamp.monotonic = (usec_t) k;
2420 log_debug("Unknown serialization key '%s'", key);
2425 static UnitActiveState service_active_state(Unit *u) {
2428 return state_translation_table[SERVICE(u)->state];
2431 static const char *service_sub_state_to_string(Unit *u) {
2434 return service_state_to_string(SERVICE(u)->state);
2437 #ifdef HAVE_SYSV_COMPAT
2438 static bool service_check_gc(Unit *u) {
2439 Service *s = SERVICE(u);
2443 return !!s->sysv_path;
2447 static bool service_check_snapshot(Unit *u) {
2448 Service *s = SERVICE(u);
2452 return !s->got_socket_fd;
2455 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2456 Service *s = SERVICE(u);
2462 if (!s->meta.fragment_path)
2463 success = is_clean_exit_lsb(code, status);
2465 success = is_clean_exit(code, status);
2467 if (s->main_pid == pid) {
2470 exec_status_exit(&s->main_exec_status, pid, code, status, s->exec_context.utmp_id);
2472 if (s->type != SERVICE_FORKING && s->control_command) {
2473 s->control_command->exec_status = s->main_exec_status;
2475 if (s->control_command->ignore)
2479 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2480 "%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status);
2481 s->failure = s->failure || !success;
2483 if (s->control_command &&
2484 s->control_command->command_next &&
2487 /* There is another command to *
2488 * execute, so let's do that. */
2490 log_debug("%s running next main command for state %s", u->meta.id, service_state_to_string(s->state));
2491 service_run_next_main(s, success);
2495 /* The service exited, so the service is officially
2498 s->control_command = NULL;
2499 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2503 case SERVICE_START_POST:
2504 case SERVICE_RELOAD:
2506 /* Need to wait until the operation is
2511 if (s->type == SERVICE_ONESHOT) {
2512 /* This was our main goal, so let's go on */
2514 service_enter_start_post(s);
2516 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2519 assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY);
2524 case SERVICE_RUNNING:
2525 service_enter_running(s, success);
2528 case SERVICE_STOP_SIGTERM:
2529 case SERVICE_STOP_SIGKILL:
2531 if (!control_pid_good(s))
2532 service_enter_stop_post(s, success);
2534 /* If there is still a control process, wait for that first */
2538 assert_not_reached("Uh, main process died at wrong time.");
2542 } else if (s->control_pid == pid) {
2546 if (s->control_command) {
2547 exec_status_exit(&s->control_command->exec_status, pid, code, status, s->exec_context.utmp_id);
2549 if (s->control_command->ignore)
2553 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2554 "%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
2555 s->failure = s->failure || !success;
2557 if (s->control_command &&
2558 s->control_command->command_next &&
2561 /* There is another command to *
2562 * execute, so let's do that. */
2564 log_debug("%s running next control command for state %s", u->meta.id, service_state_to_string(s->state));
2565 service_run_next_control(s, success);
2568 /* No further commands for this step, so let's
2569 * figure out what to do next */
2571 s->control_command = NULL;
2572 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2574 log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state));
2578 case SERVICE_START_PRE:
2580 service_enter_start(s);
2582 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2586 assert(s->type == SERVICE_FORKING);
2588 /* Let's try to load the pid
2589 * file here if we can. We
2590 * ignore the return value,
2591 * since the PID file might
2592 * actually be created by a
2593 * START_POST script */
2597 service_load_pid_file(s);
2599 service_enter_start_post(s);
2601 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2605 case SERVICE_START_POST:
2606 if (success && s->pid_file && !s->main_pid_known) {
2609 /* Hmm, let's see if we can
2610 * load the pid now after the
2611 * start-post scripts got
2614 if ((r = service_load_pid_file(s)) < 0)
2615 log_warning("%s: failed to load PID file %s: %s", s->meta.id, s->pid_file, strerror(-r));
2620 case SERVICE_RELOAD:
2622 service_enter_running(s, true);
2624 service_enter_stop(s, false);
2629 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
2632 case SERVICE_STOP_SIGTERM:
2633 case SERVICE_STOP_SIGKILL:
2634 if (main_pid_good(s) <= 0)
2635 service_enter_stop_post(s, success);
2637 /* If there is still a service
2638 * process around, wait until
2639 * that one quit, too */
2642 case SERVICE_STOP_POST:
2643 case SERVICE_FINAL_SIGTERM:
2644 case SERVICE_FINAL_SIGKILL:
2645 service_enter_dead(s, success, true);
2649 assert_not_reached("Uh, control process died at wrong time.");
2654 /* Notify clients about changed exit status */
2655 unit_add_to_dbus_queue(u);
2658 static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
2659 Service *s = SERVICE(u);
2662 assert(elapsed == 1);
2664 assert(w == &s->timer_watch);
2668 case SERVICE_START_PRE:
2670 log_warning("%s operation timed out. Terminating.", u->meta.id);
2671 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2674 case SERVICE_START_POST:
2675 case SERVICE_RELOAD:
2676 log_warning("%s operation timed out. Stopping.", u->meta.id);
2677 service_enter_stop(s, false);
2681 log_warning("%s stopping timed out. Terminating.", u->meta.id);
2682 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2685 case SERVICE_STOP_SIGTERM:
2686 log_warning("%s stopping timed out. Killing.", u->meta.id);
2687 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2690 case SERVICE_STOP_SIGKILL:
2691 /* Uh, wie sent a SIGKILL and it is still not gone?
2692 * Must be something we cannot kill, so let's just be
2693 * weirded out and continue */
2695 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
2696 service_enter_stop_post(s, false);
2699 case SERVICE_STOP_POST:
2700 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
2701 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2704 case SERVICE_FINAL_SIGTERM:
2705 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
2706 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
2709 case SERVICE_FINAL_SIGKILL:
2710 log_warning("%s still around after SIGKILL (2). Entering failed mode.", u->meta.id);
2711 service_enter_dead(s, false, true);
2714 case SERVICE_AUTO_RESTART:
2715 log_info("%s holdoff time over, scheduling restart.", u->meta.id);
2716 service_enter_restart(s);
2720 assert_not_reached("Timeout at wrong time.");
2724 static void service_cgroup_notify_event(Unit *u) {
2725 Service *s = SERVICE(u);
2729 log_debug("%s: cgroup is empty", u->meta.id);
2733 /* Waiting for SIGCHLD is usually more interesting,
2734 * because it includes return codes/signals. Which is
2735 * why we ignore the cgroup events for most cases,
2736 * except when we don't know pid which to expect the
2739 case SERVICE_RUNNING:
2740 service_enter_running(s, true);
2743 case SERVICE_STOP_SIGTERM:
2744 case SERVICE_STOP_SIGKILL:
2745 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2746 service_enter_stop_post(s, true);
2750 case SERVICE_FINAL_SIGTERM:
2751 case SERVICE_FINAL_SIGKILL:
2752 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2753 service_enter_dead(s, true, true);
2762 static void service_notify_message(Unit *u, pid_t pid, char **tags) {
2763 Service *s = SERVICE(u);
2768 if (s->notify_access == NOTIFY_NONE) {
2769 log_warning("%s: Got notification message from PID %lu, but reception is disabled.",
2770 u->meta.id, (unsigned long) pid);
2774 if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
2775 log_warning("%s: Got notification message from PID %lu, but reception only permitted for PID %lu",
2776 u->meta.id, (unsigned long) pid, (unsigned long) s->main_pid);
2780 log_debug("%s: Got message", u->meta.id);
2782 /* Interpret MAINPID= */
2783 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
2784 (s->state == SERVICE_START ||
2785 s->state == SERVICE_START_POST ||
2786 s->state == SERVICE_RUNNING ||
2787 s->state == SERVICE_RELOAD)) {
2789 if (parse_pid(e + 8, &pid) < 0)
2790 log_warning("Failed to parse notification message %s", e);
2792 log_debug("%s: got %s", u->meta.id, e);
2793 service_set_main_pid(s, pid);
2797 /* Interpret READY= */
2798 if (s->type == SERVICE_NOTIFY &&
2799 s->state == SERVICE_START &&
2800 strv_find(tags, "READY=1")) {
2801 log_debug("%s: got READY=1", u->meta.id);
2803 service_enter_start_post(s);
2806 /* Interpret STATUS= */
2807 if ((e = strv_find_prefix(tags, "STATUS="))) {
2811 if (!(t = strdup(e+7))) {
2812 log_error("Failed to allocate string.");
2816 log_debug("%s: got %s", u->meta.id, e);
2818 free(s->status_text);
2821 free(s->status_text);
2822 s->status_text = NULL;
2827 /* Notify clients about changed status or main pid */
2828 unit_add_to_dbus_queue(u);
2831 #ifdef HAVE_SYSV_COMPAT
2832 static int service_enumerate(Manager *m) {
2836 char *path = NULL, *fpath = NULL, *name = NULL;
2837 Set *runlevel_services[ELEMENTSOF(rcnd_table)], *shutdown_services = NULL;
2842 Unit *previous = NULL;
2843 char *arch_daemons = NULL;
2844 char *arch_daemons_stripped = NULL;
2845 char **arch_daemons_split = NULL;
2851 if ((r = parse_env_file("/etc/rc.conf", NEWLINE,
2852 "DAEMONS", &arch_daemons,
2856 log_warning("Failed to read /etc/rc.conf: %s", strerror(-r));
2858 } else if (arch_daemons) {
2859 if (!(arch_daemons_stripped = strchr(arch_daemons, '(')))
2860 arch_daemons_stripped = arch_daemons;
2862 arch_daemons_stripped++; /* strip start paren */
2864 arch_daemons_stripped[strcspn(arch_daemons_stripped, ")")] = 0; /* strip end paren */
2866 if (!(arch_daemons_split = strv_split_quoted(arch_daemons_stripped))) {
2871 STRV_FOREACH(p, arch_daemons_split) {
2876 if (**p == '!') /* daemons prefixed with ! are disabled, so ignore them */
2879 if (!(name = sysv_translate_name(*p))) {
2884 if ((r = manager_load_unit_prepare(m, name, NULL, NULL, &service)) < 0) {
2885 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
2889 if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, "multi-user.target", NULL, true)) < 0)
2893 if ((r = unit_add_dependency(service, UNIT_AFTER, previous, true)) < 0)
2896 if (**p != '@') /* daemons prefixed with @ can be started in the background */
2902 zero(runlevel_services);
2904 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
2905 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
2910 if (asprintf(&path, "%s/%s", *p, rcnd_table[i].path) < 0) {
2918 if (!(d = opendir(path))) {
2919 if (errno != ENOENT)
2920 log_warning("opendir() failed on %s: %s", path, strerror(errno));
2925 while ((de = readdir(d))) {
2928 if (ignore_file(de->d_name))
2931 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
2934 if (strlen(de->d_name) < 4)
2937 a = undecchar(de->d_name[1]);
2938 b = undecchar(de->d_name[2]);
2945 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i].path, de->d_name) < 0) {
2950 if (access(fpath, X_OK) < 0) {
2952 if (errno != ENOENT)
2953 log_warning("access() failed on %s: %s", fpath, strerror(errno));
2959 if (!(name = sysv_translate_name(de->d_name + 3))) {
2964 if ((r = manager_load_unit_prepare(m, name, NULL, NULL, &service)) < 0) {
2965 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
2969 if (de->d_name[0] == 'S') {
2971 if (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT) {
2972 SERVICE(service)->sysv_start_priority =
2973 MAX(a*10 + b, SERVICE(service)->sysv_start_priority);
2975 SERVICE(service)->sysv_enabled = true;
2978 if ((r = set_ensure_allocated(&runlevel_services[i], trivial_hash_func, trivial_compare_func)) < 0)
2981 if ((r = set_put(runlevel_services[i], service)) < 0)
2984 } else if (de->d_name[0] == 'K' &&
2985 (rcnd_table[i].type == RUNLEVEL_DOWN ||
2986 rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
2988 if ((r = set_ensure_allocated(&shutdown_services, trivial_hash_func, trivial_compare_func)) < 0)
2991 if ((r = set_put(shutdown_services, service)) < 0)
2997 /* Now we loaded all stubs and are aware of the lowest
2998 start-up priority for all services, not let's actually load
2999 the services, this will also tell us which services are
3000 actually native now */
3001 manager_dispatch_load_queue(m);
3003 /* If this is a native service, rely on native ways to pull in
3004 * a service, don't pull it in via sysv rcN.d links. */
3005 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++)
3006 SET_FOREACH(service, runlevel_services[i], j) {
3007 service = unit_follow_merge(service);
3009 if (service->meta.fragment_path)
3012 if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, rcnd_table[i].target, NULL, true)) < 0)
3016 /* We honour K links only for halt/reboot. For the normal
3017 * runlevels we assume the stop jobs will be implicitly added
3018 * by the core logic. Also, we don't really distuingish here
3019 * between the runlevels 0 and 6 and just add them to the
3020 * special shutdown target. On SUSE the boot.d/ runlevel is
3021 * also used for shutdown, so we add links for that too to the
3022 * shutdown target.*/
3023 SET_FOREACH(service, shutdown_services, j) {
3024 service = unit_follow_merge(service);
3026 if (service->meta.fragment_path)
3029 if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true)) < 0)
3041 free(arch_daemons_split);
3044 for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
3045 set_free(runlevel_services[i]);
3046 set_free(shutdown_services);
3055 static void service_bus_name_owner_change(
3058 const char *old_owner,
3059 const char *new_owner) {
3061 Service *s = SERVICE(u);
3066 assert(streq(s->bus_name, name));
3067 assert(old_owner || new_owner);
3069 if (old_owner && new_owner)
3070 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->meta.id, name, old_owner, new_owner);
3072 log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner);
3074 log_debug("%s's D-Bus name %s now registered by %s", u->meta.id, name, new_owner);
3076 s->bus_name_good = !!new_owner;
3078 if (s->type == SERVICE_DBUS) {
3080 /* service_enter_running() will figure out what to
3082 if (s->state == SERVICE_RUNNING)
3083 service_enter_running(s, true);
3084 else if (s->state == SERVICE_START && new_owner)
3085 service_enter_start_post(s);
3087 } else if (new_owner &&
3089 (s->state == SERVICE_START ||
3090 s->state == SERVICE_START_POST ||
3091 s->state == SERVICE_RUNNING ||
3092 s->state == SERVICE_RELOAD)) {
3094 /* Try to acquire PID from bus service */
3095 log_debug("Trying to acquire PID from D-Bus name...");
3097 bus_query_pid(u->meta.manager, name);
3101 static void service_bus_query_pid_done(
3106 Service *s = SERVICE(u);
3111 log_debug("%s's D-Bus name %s is now owned by process %u", u->meta.id, name, (unsigned) pid);
3113 if (s->main_pid <= 0 &&
3114 (s->state == SERVICE_START ||
3115 s->state == SERVICE_START_POST ||
3116 s->state == SERVICE_RUNNING ||
3117 s->state == SERVICE_RELOAD))
3118 service_set_main_pid(s, pid);
3121 int service_set_socket_fd(Service *s, int fd, Socket *sock) {
3125 /* This is called by the socket code when instantiating a new
3126 * service for a stream socket and the socket needs to be
3129 if (s->meta.load_state != UNIT_LOADED)
3132 if (s->socket_fd >= 0)
3135 if (s->state != SERVICE_DEAD)
3139 s->got_socket_fd = true;
3140 s->accept_socket = sock;
3145 static void service_reset_failed(Unit *u) {
3146 Service *s = SERVICE(u);
3150 if (s->state == SERVICE_FAILED)
3151 service_set_state(s, SERVICE_DEAD);
3156 static int service_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *error) {
3157 Service *s = SERVICE(u);
3159 Set *pid_set = NULL;
3163 if (s->main_pid <= 0 && who == KILL_MAIN) {
3164 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No main process to kill");
3168 if (s->control_pid <= 0 && who == KILL_CONTROL) {
3169 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill");
3173 if (s->control_pid > 0)
3174 if (kill(mode == KILL_PROCESS_GROUP ? -s->control_pid : s->control_pid, signo) < 0)
3177 if (s->main_pid > 0)
3178 if (kill(mode == KILL_PROCESS_GROUP ? -s->main_pid : s->main_pid, signo) < 0)
3181 if (mode == KILL_CONTROL_GROUP) {
3184 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func)))
3187 /* Exclude the control/main pid from being killed via the cgroup */
3188 if (s->control_pid > 0)
3189 if ((q = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0) {
3194 if (s->main_pid > 0)
3195 if ((q = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0) {
3200 if ((q = cgroup_bonding_kill_list(s->meta.cgroup_bondings, signo, pid_set)) < 0)
3201 if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
3212 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
3213 [SERVICE_DEAD] = "dead",
3214 [SERVICE_START_PRE] = "start-pre",
3215 [SERVICE_START] = "start",
3216 [SERVICE_START_POST] = "start-post",
3217 [SERVICE_RUNNING] = "running",
3218 [SERVICE_EXITED] = "exited",
3219 [SERVICE_RELOAD] = "reload",
3220 [SERVICE_STOP] = "stop",
3221 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
3222 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
3223 [SERVICE_STOP_POST] = "stop-post",
3224 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
3225 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
3226 [SERVICE_FAILED] = "failed",
3227 [SERVICE_AUTO_RESTART] = "auto-restart",
3230 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
3232 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
3233 [SERVICE_RESTART_NO] = "no",
3234 [SERVICE_RESTART_ON_SUCCESS] = "on-success",
3235 [SERVICE_RESTART_ON_FAILURE] = "on-failure",
3236 [SERVICE_RESTART_ON_ABORT] = "on-abort",
3237 [SERVICE_RESTART_ALWAYS] = "always"
3240 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
3242 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
3243 [SERVICE_SIMPLE] = "simple",
3244 [SERVICE_FORKING] = "forking",
3245 [SERVICE_ONESHOT] = "oneshot",
3246 [SERVICE_DBUS] = "dbus",
3247 [SERVICE_NOTIFY] = "notify"
3250 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
3252 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
3253 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
3254 [SERVICE_EXEC_START] = "ExecStart",
3255 [SERVICE_EXEC_START_POST] = "ExecStartPost",
3256 [SERVICE_EXEC_RELOAD] = "ExecReload",
3257 [SERVICE_EXEC_STOP] = "ExecStop",
3258 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
3261 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
3263 static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
3264 [NOTIFY_NONE] = "none",
3265 [NOTIFY_MAIN] = "main",
3266 [NOTIFY_ALL] = "all"
3269 DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
3271 const UnitVTable service_vtable = {
3272 .suffix = ".service",
3273 .show_status = true,
3275 .init = service_init,
3276 .done = service_done,
3277 .load = service_load,
3279 .coldplug = service_coldplug,
3281 .dump = service_dump,
3283 .start = service_start,
3284 .stop = service_stop,
3285 .reload = service_reload,
3287 .can_reload = service_can_reload,
3289 .kill = service_kill,
3291 .serialize = service_serialize,
3292 .deserialize_item = service_deserialize_item,
3294 .active_state = service_active_state,
3295 .sub_state_to_string = service_sub_state_to_string,
3297 #ifdef HAVE_SYSV_COMPAT
3298 .check_gc = service_check_gc,
3300 .check_snapshot = service_check_snapshot,
3302 .sigchld_event = service_sigchld_event,
3303 .timer_event = service_timer_event,
3305 .reset_failed = service_reset_failed,
3307 .cgroup_notify_empty = service_cgroup_notify_event,
3308 .notify_message = service_notify_message,
3310 .bus_name_owner_change = service_bus_name_owner_change,
3311 .bus_query_pid_done = service_bus_query_pid_done,
3313 .bus_interface = "org.freedesktop.systemd1.Service",
3314 .bus_message_handler = bus_service_message_handler,
3315 .bus_invalidating_properties = bus_service_invalidating_properties,
3317 #ifdef HAVE_SYSV_COMPAT
3318 .enumerate = service_enumerate