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"
37 #include "exit-status.h"
39 #define COMMENTS "#;\n"
40 #define NEWLINES "\n\r"
42 #ifdef HAVE_SYSV_COMPAT
44 #define DEFAULT_SYSV_TIMEOUT_USEC (3*USEC_PER_MINUTE)
46 typedef enum RunlevelType {
55 const RunlevelType type;
57 /* Standard SysV runlevels for start-up */
58 { "rc1.d", SPECIAL_RESCUE_TARGET, RUNLEVEL_UP },
59 { "rc2.d", SPECIAL_RUNLEVEL2_TARGET, RUNLEVEL_UP },
60 { "rc3.d", SPECIAL_RUNLEVEL3_TARGET, RUNLEVEL_UP },
61 { "rc4.d", SPECIAL_RUNLEVEL4_TARGET, RUNLEVEL_UP },
62 { "rc5.d", SPECIAL_RUNLEVEL5_TARGET, RUNLEVEL_UP },
65 /* SUSE style boot.d */
66 { "boot.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
69 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_FRUGALWARE)
70 /* Debian style rcS.d */
71 { "rcS.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
74 /* Standard SysV runlevels for shutdown */
75 { "rc0.d", SPECIAL_POWEROFF_TARGET, RUNLEVEL_DOWN },
76 { "rc6.d", SPECIAL_REBOOT_TARGET, RUNLEVEL_DOWN }
78 /* Note that the order here matters, as we read the
79 directories in this order, and we want to make sure that
80 sysv_start_priority is known when we first load the
81 unit. And that value we only know from S links. Hence
82 UP/SYSINIT must be read before DOWN */
85 #define RUNLEVELS_UP "12345"
86 /* #define RUNLEVELS_DOWN "06" */
87 /* #define RUNLEVELS_BOOT "bBsS" */
90 static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
91 [SERVICE_DEAD] = UNIT_INACTIVE,
92 [SERVICE_START_PRE] = UNIT_ACTIVATING,
93 [SERVICE_START] = UNIT_ACTIVATING,
94 [SERVICE_START_POST] = UNIT_ACTIVATING,
95 [SERVICE_RUNNING] = UNIT_ACTIVE,
96 [SERVICE_EXITED] = UNIT_ACTIVE,
97 [SERVICE_RELOAD] = UNIT_RELOADING,
98 [SERVICE_STOP] = UNIT_DEACTIVATING,
99 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
100 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
101 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
102 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
103 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
104 [SERVICE_FAILED] = UNIT_FAILED,
105 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING
108 static void service_init(Unit *u) {
109 Service *s = SERVICE(u);
112 assert(u->meta.load_state == UNIT_STUB);
114 s->timeout_usec = DEFAULT_TIMEOUT_USEC;
115 s->restart_usec = DEFAULT_RESTART_USEC;
116 s->timer_watch.type = WATCH_INVALID;
117 #ifdef HAVE_SYSV_COMPAT
118 s->sysv_start_priority = -1;
121 s->guess_main_pid = true;
123 exec_context_init(&s->exec_context);
124 s->exec_context.std_output = u->meta.manager->default_std_output;
125 s->exec_context.std_error = u->meta.manager->default_std_error;
127 RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
129 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
132 static void service_unwatch_control_pid(Service *s) {
135 if (s->control_pid <= 0)
138 unit_unwatch_pid(UNIT(s), s->control_pid);
142 static void service_unwatch_main_pid(Service *s) {
145 if (s->main_pid <= 0)
148 unit_unwatch_pid(UNIT(s), s->main_pid);
152 static int service_set_main_pid(Service *s, pid_t pid) {
163 if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid())
164 log_warning("%s: Supervising process %lu which is not our child. We'll most likely not notice when it exits.",
165 s->meta.id, (unsigned long) pid);
168 s->main_pid_known = true;
170 exec_status_start(&s->main_exec_status, pid);
175 static void service_close_socket_fd(Service *s) {
178 if (s->socket_fd < 0)
181 close_nointr_nofail(s->socket_fd);
185 static void service_connection_unref(Service *s) {
188 if (!s->accept_socket)
191 socket_connection_unref(s->accept_socket);
192 s->accept_socket = NULL;
195 static void service_done(Unit *u) {
196 Service *s = SERVICE(u);
203 #ifdef HAVE_SYSV_COMPAT
207 free(s->sysv_runlevels);
208 s->sysv_runlevels = NULL;
211 free(s->status_text);
212 s->status_text = NULL;
214 exec_context_done(&s->exec_context);
215 exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
216 s->control_command = NULL;
217 s->main_command = NULL;
219 /* This will leak a process, but at least no memory or any of
221 service_unwatch_main_pid(s);
222 service_unwatch_control_pid(s);
225 unit_unwatch_bus_name(UNIT(u), s->bus_name);
230 service_close_socket_fd(s);
231 service_connection_unref(s);
233 set_free(s->configured_sockets);
235 unit_unwatch_timer(u, &s->timer_watch);
238 #ifdef HAVE_SYSV_COMPAT
239 static char *sysv_translate_name(const char *name) {
242 if (!(r = new(char, strlen(name) + sizeof(".service"))))
245 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU)
246 if (endswith(name, ".sh"))
247 /* Drop Debian-style .sh suffix */
248 strcpy(stpcpy(r, name) - 3, ".service");
251 if (startswith(name, "boot."))
252 /* Drop SuSE-style boot. prefix */
253 strcpy(stpcpy(r, name + 5), ".service");
255 #ifdef TARGET_FRUGALWARE
256 if (startswith(name, "rc."))
257 /* Drop Frugalware-style rc. prefix */
258 strcpy(stpcpy(r, name + 3), ".service");
261 /* Normal init scripts */
262 strcpy(stpcpy(r, name), ".service");
267 static int sysv_translate_facility(const char *name, const char *filename, char **_r) {
269 /* We silently ignore the $ prefix here. According to the LSB
270 * spec it simply indicates whether something is a
271 * standardized name or a distribution-specific one. Since we
272 * just follow what already exists and do not introduce new
273 * uses or names we don't care who introduced a new name. */
275 static const char * const table[] = {
276 /* LSB defined facilities */
277 "local_fs", SPECIAL_LOCAL_FS_TARGET,
278 "network", SPECIAL_NETWORK_TARGET,
279 "named", SPECIAL_NSS_LOOKUP_TARGET,
280 "portmap", SPECIAL_RPCBIND_TARGET,
281 "remote_fs", SPECIAL_REMOTE_FS_TARGET,
282 "syslog", SPECIAL_SYSLOG_TARGET,
283 "time", SPECIAL_RTC_SET_TARGET,
285 /* common extensions */
286 "mail-transfer-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
287 "x-display-manager", SPECIAL_DISPLAY_MANAGER_SERVICE,
290 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU)
291 "mail-transport-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
295 "MTA", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
296 "smtpdaemon", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
297 "httpd", SPECIAL_HTTP_DAEMON_TARGET,
301 "smtp", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
312 n = *name == '$' ? name + 1 : name;
314 for (i = 0; i < ELEMENTSOF(table); i += 2) {
316 if (!streq(table[i], n))
322 if (!(r = strdup(table[i+1])))
328 /* If we don't know this name, fallback heuristics to figure
329 * out whether something is a target or a service alias. */
332 if (!unit_prefix_is_valid(n))
335 /* Facilities starting with $ are most likely targets */
336 r = unit_name_build(n, NULL, ".target");
337 } else if (filename && streq(name, filename))
338 /* Names equalling the file name of the services are redundant */
341 /* Everything else we assume to be normal service names */
342 r = sysv_translate_name(n);
355 static int sysv_fix_order(Service *s) {
361 if (s->sysv_start_priority < 0)
364 /* For each pair of services where at least one lacks a LSB
365 * header, we use the start priority value to order things. */
367 LIST_FOREACH(units_per_type, other, s->meta.manager->units_per_type[UNIT_SERVICE]) {
370 bool special_s, special_t;
372 t = (Service*) other;
377 if (t->meta.load_state != UNIT_LOADED)
380 if (t->sysv_start_priority < 0)
383 /* If both units have modern headers we don't care
384 * about the priorities */
385 if ((s->meta.fragment_path || s->sysv_has_lsb) &&
386 (t->meta.fragment_path || t->sysv_has_lsb))
389 special_s = s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels);
390 special_t = t->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, t->sysv_runlevels);
392 if (special_t && !special_s)
394 else if (special_s && !special_t)
396 else if (t->sysv_start_priority < s->sysv_start_priority)
398 else if (t->sysv_start_priority > s->sysv_start_priority)
403 /* FIXME: Maybe we should compare the name here lexicographically? */
405 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
412 static ExecCommand *exec_command_new(const char *path, const char *arg1) {
415 if (!(c = new0(ExecCommand, 1)))
418 if (!(c->path = strdup(path))) {
423 if (!(c->argv = strv_new(path, arg1, NULL))) {
432 static int sysv_exec_commands(Service *s) {
436 assert(s->sysv_path);
438 if (!(c = exec_command_new(s->sysv_path, "start")))
440 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
442 if (!(c = exec_command_new(s->sysv_path, "stop")))
444 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
446 if (!(c = exec_command_new(s->sysv_path, "reload")))
448 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
453 static int service_load_sysv_path(Service *s, const char *path) {
464 char *short_description = NULL, *long_description = NULL, *chkconfig_description = NULL, *description;
471 if (!(f = fopen(path, "re"))) {
472 r = errno == ENOENT ? 0 : -errno;
477 if (!(s->sysv_path = strdup(path))) {
483 char l[LINE_MAX], *t;
485 if (!fgets(l, sizeof(l), f)) {
490 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
500 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
502 s->sysv_has_lsb = true;
506 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
512 t += strspn(t, WHITESPACE);
514 if (state == NORMAL) {
516 /* Try to parse Red Hat style chkconfig headers */
518 if (startswith_no_case(t, "chkconfig:")) {
520 char runlevels[16], *k;
524 if (sscanf(t+10, "%15s %i %*i",
526 &start_priority) != 2) {
528 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
532 /* A start priority gathered from the
533 * symlink farms is preferred over the
534 * data from the LSB header. */
535 if (start_priority < 0 || start_priority > 99)
536 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
537 else if (s->sysv_start_priority < 0)
538 s->sysv_start_priority = start_priority;
540 char_array_0(runlevels);
541 k = delete_chars(runlevels, WHITESPACE "-");
546 if (!(d = strdup(k))) {
551 free(s->sysv_runlevels);
552 s->sysv_runlevels = d;
555 } else if (startswith_no_case(t, "description:")) {
557 size_t k = strlen(t);
561 if (t[k-1] == '\\') {
566 if ((j = strstrip(t+12)) && *j) {
567 if (!(d = strdup(j))) {
574 free(chkconfig_description);
575 chkconfig_description = d;
577 } else if (startswith_no_case(t, "pidfile:")) {
584 if (!path_is_absolute(fn)) {
585 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
589 if (!(fn = strdup(fn))) {
598 } else if (state == DESCRIPTION) {
600 /* Try to parse Red Hat style description
603 size_t k = strlen(t);
611 if ((j = strstrip(t)) && *j) {
614 if (chkconfig_description)
615 asprintf(&d, "%s %s", chkconfig_description, j);
624 free(chkconfig_description);
625 chkconfig_description = d;
628 } else if (state == LSB || state == LSB_DESCRIPTION) {
630 if (startswith_no_case(t, "Provides:")) {
636 FOREACH_WORD_QUOTED(w, z, t+9, i) {
639 if (!(n = strndup(w, z))) {
644 r = sysv_translate_facility(n, file_name_from_path(path), &m);
653 if (unit_name_to_type(m) == UNIT_SERVICE)
654 r = unit_add_name(u, m);
656 r = unit_add_dependency_by_name(u, UNIT_BEFORE, m, NULL, true);
658 if (s->sysv_enabled) {
661 if ((k = unit_add_dependency_by_name_inverse(u, UNIT_WANTS, m, NULL, true)) < 0)
667 log_error("[%s:%u] Failed to add LSB Provides name %s, ignoring: %s", path, line, m, strerror(-r));
672 } else if (startswith_no_case(t, "Required-Start:") ||
673 startswith_no_case(t, "Should-Start:") ||
674 startswith_no_case(t, "X-Start-Before:") ||
675 startswith_no_case(t, "X-Start-After:")) {
681 FOREACH_WORD_QUOTED(w, z, strchr(t, ':')+1, i) {
684 if (!(n = strndup(w, z))) {
689 r = sysv_translate_facility(n, file_name_from_path(path), &m);
692 log_error("[%s:%u] Failed to translate LSB dependency %s, ignoring: %s", path, line, n, strerror(-r));
702 r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
705 log_error("[%s:%u] Failed to add dependency on %s, ignoring: %s", path, line, m, strerror(-r));
709 } else if (startswith_no_case(t, "Default-Start:")) {
714 k = delete_chars(t+14, WHITESPACE "-");
717 if (!(d = strdup(k))) {
722 free(s->sysv_runlevels);
723 s->sysv_runlevels = d;
726 } else if (startswith_no_case(t, "Description:")) {
729 state = LSB_DESCRIPTION;
731 if ((j = strstrip(t+12)) && *j) {
732 if (!(d = strdup(j))) {
739 free(long_description);
740 long_description = d;
742 } else if (startswith_no_case(t, "Short-Description:")) {
747 if ((j = strstrip(t+18)) && *j) {
748 if (!(d = strdup(j))) {
755 free(short_description);
756 short_description = d;
758 } else if (startswith_no_case(t, "X-Interactive:")) {
761 if ((b = parse_boolean(strstrip(t+14))) < 0) {
762 log_warning("[%s:%u] Couldn't parse interactive flag. Ignoring.", path, line);
767 s->exec_context.std_input = EXEC_INPUT_TTY;
769 s->exec_context.std_input = EXEC_INPUT_NULL;
771 } else if (state == LSB_DESCRIPTION) {
773 if (startswith(l, "#\t") || startswith(l, "# ")) {
776 if ((j = strstrip(t)) && *j) {
779 if (long_description)
780 asprintf(&d, "%s %s", long_description, t);
789 free(long_description);
790 long_description = d;
799 if ((r = sysv_exec_commands(s)) < 0)
802 if (s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
803 /* If there a runlevels configured for this service
804 * but none of the standard ones, then we assume this
805 * is some special kind of service (which might be
806 * needed for early boot) and don't create any links
809 s->meta.default_dependencies = false;
811 /* Don't timeout special services during boot (like fsck) */
814 s->timeout_usec = DEFAULT_SYSV_TIMEOUT_USEC;
816 /* Special setting for all SysV services */
817 s->type = SERVICE_FORKING;
818 s->remain_after_exit = true;
819 s->restart = SERVICE_RESTART_NO;
820 s->exec_context.std_output =
821 (s->meta.manager->sysv_console || s->exec_context.std_input == EXEC_INPUT_TTY)
822 ? EXEC_OUTPUT_TTY : s->meta.manager->default_std_output;
823 s->exec_context.kill_mode = KILL_PROCESS_GROUP;
825 /* We use the long description only if
826 * no short description is set. */
828 if (short_description)
829 description = short_description;
830 else if (chkconfig_description)
831 description = chkconfig_description;
832 else if (long_description)
833 description = long_description;
840 if (!(d = strappend("LSB: ", description))) {
845 u->meta.description = d;
848 u->meta.load_state = UNIT_LOADED;
856 free(short_description);
857 free(long_description);
858 free(chkconfig_description);
863 static int service_load_sysv_name(Service *s, const char *name) {
869 /* For SysV services we strip the boot.*, rc.* and *.sh
870 * prefixes/suffixes. */
871 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU)
872 if (endswith(name, ".sh.service"))
877 if (startswith(name, "boot."))
881 #ifdef TARGET_FRUGALWARE
882 if (startswith(name, "rc."))
886 STRV_FOREACH(p, s->meta.manager->lookup_paths.sysvinit_path) {
890 if (asprintf(&path, "%s/%s", *p, name) < 0)
893 assert(endswith(path, ".service"));
894 path[strlen(path)-8] = 0;
896 r = service_load_sysv_path(s, path);
898 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU)
899 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
900 /* Try Debian style *.sh source'able init scripts */
902 r = service_load_sysv_path(s, path);
908 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
909 /* Try SUSE style boot.* init scripts */
911 if (asprintf(&path, "%s/boot.%s", *p, name) < 0)
914 /* Drop .service suffix */
915 path[strlen(path)-8] = 0;
916 r = service_load_sysv_path(s, path);
921 #ifdef TARGET_FRUGALWARE
922 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
923 /* Try Frugalware style rc.* init scripts */
925 if (asprintf(&path, "%s/rc.%s", *p, name) < 0)
928 /* Drop .service suffix */
929 path[strlen(path)-8] = 0;
930 r = service_load_sysv_path(s, path);
938 if ((s->meta.load_state != UNIT_STUB))
945 static int service_load_sysv(Service *s) {
952 /* Load service data from SysV init scripts, preferably with
955 if (strv_isempty(s->meta.manager->lookup_paths.sysvinit_path))
958 if ((t = s->meta.id))
959 if ((r = service_load_sysv_name(s, t)) < 0)
962 if (s->meta.load_state == UNIT_STUB)
963 SET_FOREACH(t, s->meta.names, i) {
967 if ((r = service_load_sysv_name(s, t)) < 0)
970 if (s->meta.load_state != UNIT_STUB)
978 static int fsck_fix_order(Service *s) {
984 if (s->fsck_passno <= 0)
987 /* For each pair of services where both have an fsck priority
988 * we order things based on it. */
990 LIST_FOREACH(units_per_type, other, s->meta.manager->units_per_type[UNIT_SERVICE]) {
994 t = (Service*) other;
999 if (t->meta.load_state != UNIT_LOADED)
1002 if (t->fsck_passno <= 0)
1005 if (t->fsck_passno < s->fsck_passno)
1007 else if (t->fsck_passno > s->fsck_passno)
1012 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
1019 static int service_verify(Service *s) {
1022 if (s->meta.load_state != UNIT_LOADED)
1025 if (!s->exec_command[SERVICE_EXEC_START]) {
1026 log_error("%s lacks ExecStart setting. Refusing.", s->meta.id);
1030 if (s->type != SERVICE_ONESHOT &&
1031 s->exec_command[SERVICE_EXEC_START]->command_next) {
1032 log_error("%s has more than one ExecStart setting, which is only allowed for Type=oneshot services. Refusing.", s->meta.id);
1036 if (s->type == SERVICE_ONESHOT &&
1037 s->exec_command[SERVICE_EXEC_RELOAD]) {
1038 log_error("%s has an ExecReload setting, which is not allowed for Type=oneshot services. Refusing.", s->meta.id);
1042 if (s->type == SERVICE_DBUS && !s->bus_name) {
1043 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", s->meta.id);
1047 if (s->exec_context.pam_name && s->exec_context.kill_mode != KILL_CONTROL_GROUP) {
1048 log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", s->meta.id);
1055 static int service_add_default_dependencies(Service *s) {
1060 /* Add a number of automatic dependencies useful for the
1061 * majority of services. */
1063 /* First, pull in base system */
1064 if (s->meta.manager->running_as == MANAGER_SYSTEM) {
1066 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
1069 } else if (s->meta.manager->running_as == MANAGER_USER) {
1071 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SOCKETS_TARGET, NULL, true)) < 0)
1075 /* Second, activate normal shutdown */
1076 return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true);
1079 static int service_load(Unit *u) {
1081 Service *s = SERVICE(u);
1085 /* Load a .service file */
1086 if ((r = unit_load_fragment(u)) < 0)
1089 #ifdef HAVE_SYSV_COMPAT
1090 /* Load a classic init script as a fallback, if we couldn't find anything */
1091 if (u->meta.load_state == UNIT_STUB)
1092 if ((r = service_load_sysv(s)) < 0)
1096 /* Still nothing found? Then let's give up */
1097 if (u->meta.load_state == UNIT_STUB)
1100 /* We were able to load something, then let's add in the
1101 * dropin directories. */
1102 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
1105 /* This is a new unit? Then let's add in some extras */
1106 if (u->meta.load_state == UNIT_LOADED) {
1107 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
1110 if ((r = unit_add_default_cgroups(u)) < 0)
1113 #ifdef HAVE_SYSV_COMPAT
1114 if ((r = sysv_fix_order(s)) < 0)
1118 if ((r = fsck_fix_order(s)) < 0)
1122 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
1125 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
1126 s->notify_access = NOTIFY_MAIN;
1128 if (s->type == SERVICE_DBUS || s->bus_name)
1129 if ((r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_DBUS_TARGET, NULL, true)) < 0)
1132 if (s->meta.default_dependencies)
1133 if ((r = service_add_default_dependencies(s)) < 0)
1137 return service_verify(s);
1140 static void service_dump(Unit *u, FILE *f, const char *prefix) {
1142 ServiceExecCommand c;
1143 Service *s = SERVICE(u);
1144 const char *prefix2;
1149 p2 = strappend(prefix, "\t");
1150 prefix2 = p2 ? p2 : prefix;
1153 "%sService State: %s\n"
1154 "%sPermissionsStartOnly: %s\n"
1155 "%sRootDirectoryStartOnly: %s\n"
1156 "%sRemainAfterExit: %s\n"
1157 "%sGuessMainPID: %s\n"
1160 "%sNotifyAccess: %s\n",
1161 prefix, service_state_to_string(s->state),
1162 prefix, yes_no(s->permissions_start_only),
1163 prefix, yes_no(s->root_directory_start_only),
1164 prefix, yes_no(s->remain_after_exit),
1165 prefix, yes_no(s->guess_main_pid),
1166 prefix, service_type_to_string(s->type),
1167 prefix, service_restart_to_string(s->restart),
1168 prefix, notify_access_to_string(s->notify_access));
1170 if (s->control_pid > 0)
1172 "%sControl PID: %lu\n",
1173 prefix, (unsigned long) s->control_pid);
1175 if (s->main_pid > 0)
1177 "%sMain PID: %lu\n",
1178 prefix, (unsigned long) s->main_pid);
1183 prefix, s->pid_file);
1188 "%sBus Name Good: %s\n",
1189 prefix, s->bus_name,
1190 prefix, yes_no(s->bus_name_good));
1192 exec_context_dump(&s->exec_context, f, prefix);
1194 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
1196 if (!s->exec_command[c])
1199 fprintf(f, "%s-> %s:\n",
1200 prefix, service_exec_command_to_string(c));
1202 exec_command_dump_list(s->exec_command[c], f, prefix2);
1205 #ifdef HAVE_SYSV_COMPAT
1208 "%sSysV Init Script Path: %s\n"
1209 "%sSysV Init Script has LSB Header: %s\n"
1210 "%sSysVEnabled: %s\n",
1211 prefix, s->sysv_path,
1212 prefix, yes_no(s->sysv_has_lsb),
1213 prefix, yes_no(s->sysv_enabled));
1215 if (s->sysv_start_priority >= 0)
1217 "%sSysVStartPriority: %i\n",
1218 prefix, s->sysv_start_priority);
1220 if (s->sysv_runlevels)
1221 fprintf(f, "%sSysVRunLevels: %s\n",
1222 prefix, s->sysv_runlevels);
1225 if (s->fsck_passno > 0)
1227 "%sFsckPassNo: %i\n",
1228 prefix, s->fsck_passno);
1231 fprintf(f, "%sStatus Text: %s\n",
1232 prefix, s->status_text);
1237 static int service_load_pid_file(Service *s) {
1247 if ((r = read_one_line_file(s->pid_file, &k)) < 0)
1250 r = parse_pid(k, &pid);
1256 if (kill(pid, 0) < 0 && errno != EPERM) {
1257 log_warning("PID %lu read from file %s does not exist. Your service or init script might be broken.",
1258 (unsigned long) pid, s->pid_file);
1262 if ((r = service_set_main_pid(s, pid)) < 0)
1265 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1266 /* FIXME: we need to do something here */
1272 static int service_search_main_pid(Service *s) {
1278 /* If we know it anyway, don't ever fallback to unreliable
1280 if (s->main_pid_known)
1283 if (!s->guess_main_pid)
1286 assert(s->main_pid <= 0);
1288 if ((pid = cgroup_bonding_search_main_pid_list(s->meta.cgroup_bondings)) <= 0)
1291 if ((r = service_set_main_pid(s, pid)) < 0)
1294 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1295 /* FIXME: we need to do something here */
1301 static int service_get_sockets(Service *s, Set **_set) {
1310 if (s->socket_fd >= 0)
1313 if (!set_isempty(s->configured_sockets))
1316 /* Collects all Socket objects that belong to this
1317 * service. Note that a service might have multiple sockets
1318 * via multiple names. */
1320 if (!(set = set_new(NULL, NULL)))
1323 SET_FOREACH(t, s->meta.names, i) {
1327 /* Look for all socket objects that go by any of our
1328 * units and collect their fds */
1330 if (!(k = unit_name_change_suffix(t, ".socket"))) {
1335 p = manager_get_unit(s->meta.manager, k);
1341 if ((r = set_put(set, p)) < 0)
1353 static int service_notify_sockets_dead(Service *s) {
1355 Set *set, *free_set = NULL;
1361 /* Notifies all our sockets when we die */
1363 if (s->socket_fd >= 0)
1366 if (!set_isempty(s->configured_sockets))
1367 set = s->configured_sockets;
1369 if ((r = service_get_sockets(s, &free_set)) < 0)
1375 SET_FOREACH(sock, set, i)
1376 socket_notify_service_dead(sock);
1383 static void service_set_state(Service *s, ServiceState state) {
1384 ServiceState old_state;
1387 old_state = s->state;
1390 if (state != SERVICE_START_PRE &&
1391 state != SERVICE_START &&
1392 state != SERVICE_START_POST &&
1393 state != SERVICE_RELOAD &&
1394 state != SERVICE_STOP &&
1395 state != SERVICE_STOP_SIGTERM &&
1396 state != SERVICE_STOP_SIGKILL &&
1397 state != SERVICE_STOP_POST &&
1398 state != SERVICE_FINAL_SIGTERM &&
1399 state != SERVICE_FINAL_SIGKILL &&
1400 state != SERVICE_AUTO_RESTART)
1401 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1403 if (state != SERVICE_START &&
1404 state != SERVICE_START_POST &&
1405 state != SERVICE_RUNNING &&
1406 state != SERVICE_RELOAD &&
1407 state != SERVICE_STOP &&
1408 state != SERVICE_STOP_SIGTERM &&
1409 state != SERVICE_STOP_SIGKILL) {
1410 service_unwatch_main_pid(s);
1411 s->main_command = NULL;
1414 if (state != SERVICE_START_PRE &&
1415 state != SERVICE_START &&
1416 state != SERVICE_START_POST &&
1417 state != SERVICE_RELOAD &&
1418 state != SERVICE_STOP &&
1419 state != SERVICE_STOP_SIGTERM &&
1420 state != SERVICE_STOP_SIGKILL &&
1421 state != SERVICE_STOP_POST &&
1422 state != SERVICE_FINAL_SIGTERM &&
1423 state != SERVICE_FINAL_SIGKILL) {
1424 service_unwatch_control_pid(s);
1425 s->control_command = NULL;
1426 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1429 if (state == SERVICE_DEAD ||
1430 state == SERVICE_STOP ||
1431 state == SERVICE_STOP_SIGTERM ||
1432 state == SERVICE_STOP_SIGKILL ||
1433 state == SERVICE_STOP_POST ||
1434 state == SERVICE_FINAL_SIGTERM ||
1435 state == SERVICE_FINAL_SIGKILL ||
1436 state == SERVICE_FAILED ||
1437 state == SERVICE_AUTO_RESTART)
1438 service_notify_sockets_dead(s);
1440 if (state != SERVICE_START_PRE &&
1441 state != SERVICE_START &&
1442 state != SERVICE_START_POST &&
1443 state != SERVICE_RUNNING &&
1444 state != SERVICE_RELOAD &&
1445 state != SERVICE_STOP &&
1446 state != SERVICE_STOP_SIGTERM &&
1447 state != SERVICE_STOP_SIGKILL &&
1448 state != SERVICE_STOP_POST &&
1449 state != SERVICE_FINAL_SIGTERM &&
1450 state != SERVICE_FINAL_SIGKILL &&
1451 !(state == SERVICE_DEAD && s->meta.job)) {
1452 service_close_socket_fd(s);
1453 service_connection_unref(s);
1456 /* For the inactive states unit_notify() will trim the cgroup,
1457 * but for exit we have to do that ourselves... */
1458 if (state == SERVICE_EXITED)
1459 cgroup_bonding_trim_list(s->meta.cgroup_bondings, true);
1461 if (old_state != state)
1462 log_debug("%s changed %s -> %s", s->meta.id, service_state_to_string(old_state), service_state_to_string(state));
1464 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state], !s->reload_failure);
1465 s->reload_failure = false;
1468 static int service_coldplug(Unit *u) {
1469 Service *s = SERVICE(u);
1473 assert(s->state == SERVICE_DEAD);
1475 if (s->deserialized_state != s->state) {
1477 if (s->deserialized_state == SERVICE_START_PRE ||
1478 s->deserialized_state == SERVICE_START ||
1479 s->deserialized_state == SERVICE_START_POST ||
1480 s->deserialized_state == SERVICE_RELOAD ||
1481 s->deserialized_state == SERVICE_STOP ||
1482 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1483 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1484 s->deserialized_state == SERVICE_STOP_POST ||
1485 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1486 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
1487 s->deserialized_state == SERVICE_AUTO_RESTART) {
1489 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1492 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1494 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1499 if ((s->deserialized_state == SERVICE_START &&
1500 (s->type == SERVICE_FORKING ||
1501 s->type == SERVICE_DBUS ||
1502 s->type == SERVICE_ONESHOT ||
1503 s->type == SERVICE_NOTIFY)) ||
1504 s->deserialized_state == SERVICE_START_POST ||
1505 s->deserialized_state == SERVICE_RUNNING ||
1506 s->deserialized_state == SERVICE_RELOAD ||
1507 s->deserialized_state == SERVICE_STOP ||
1508 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1509 s->deserialized_state == SERVICE_STOP_SIGKILL)
1510 if (s->main_pid > 0)
1511 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1514 if (s->deserialized_state == SERVICE_START_PRE ||
1515 s->deserialized_state == SERVICE_START ||
1516 s->deserialized_state == SERVICE_START_POST ||
1517 s->deserialized_state == SERVICE_RELOAD ||
1518 s->deserialized_state == SERVICE_STOP ||
1519 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1520 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1521 s->deserialized_state == SERVICE_STOP_POST ||
1522 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1523 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1524 if (s->control_pid > 0)
1525 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1528 service_set_state(s, s->deserialized_state);
1534 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1538 unsigned rn_fds = 0;
1539 Set *set, *free_set = NULL;
1546 if (s->socket_fd >= 0)
1549 if (!set_isempty(s->configured_sockets))
1550 set = s->configured_sockets;
1552 if ((r = service_get_sockets(s, &free_set)) < 0)
1558 SET_FOREACH(sock, set, i) {
1562 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
1574 if (!(t = new(int, rn_fds+cn_fds))) {
1580 memcpy(t, rfds, rn_fds);
1581 memcpy(t+rn_fds, cfds, cn_fds);
1586 rn_fds = rn_fds+cn_fds;
1604 static int service_spawn(
1609 bool apply_permissions,
1611 bool apply_tty_stdin,
1612 bool set_notify_socket,
1617 int *fds = NULL, *fdsbuf = NULL;
1618 unsigned n_fds = 0, n_env = 0;
1619 char **argv = NULL, **final_env = NULL, **our_env = NULL;
1626 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1627 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1628 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1630 if (s->socket_fd >= 0) {
1631 fds = &s->socket_fd;
1634 if ((r = service_collect_fds(s, &fdsbuf, &n_fds)) < 0)
1641 if (timeout && s->timeout_usec) {
1642 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1645 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1647 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1652 if (!(our_env = new0(char*, 4))) {
1657 if (set_notify_socket)
1658 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=@%s", s->meta.manager->notify_socket) < 0) {
1663 if (s->main_pid > 0)
1664 if (asprintf(our_env + n_env++, "MAINPID=%lu", (unsigned long) s->main_pid) < 0) {
1669 if (!(final_env = strv_env_merge(2,
1670 s->meta.manager->environment,
1685 s->meta.manager->confirm_spawn,
1686 s->meta.cgroup_bondings,
1693 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1694 /* FIXME: we need to do something here */
1700 strv_free(final_env);
1710 strv_free(final_env);
1713 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1718 static int main_pid_good(Service *s) {
1721 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1724 /* If we know the pid file, then lets just check if it is
1726 if (s->main_pid_known)
1727 return s->main_pid > 0;
1729 /* We don't know the pid */
1733 static int control_pid_good(Service *s) {
1736 return s->control_pid > 0;
1739 static int cgroup_good(Service *s) {
1744 if ((r = cgroup_bonding_is_empty_list(s->meta.cgroup_bondings)) < 0)
1750 static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1757 if (allow_restart &&
1758 !s->forbid_restart &&
1759 (s->restart == SERVICE_RESTART_ALWAYS ||
1760 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure) ||
1761 (s->restart == SERVICE_RESTART_ON_FAILURE && s->failure) ||
1762 (s->restart == SERVICE_RESTART_ON_ABORT && s->failure &&
1763 (s->main_exec_status.code == CLD_KILLED ||
1764 s->main_exec_status.code == CLD_DUMPED)))) {
1766 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
1769 service_set_state(s, SERVICE_AUTO_RESTART);
1771 service_set_state(s, s->failure ? SERVICE_FAILED : SERVICE_DEAD);
1773 s->forbid_restart = false;
1778 log_warning("%s failed to run install restart timer: %s", s->meta.id, strerror(-r));
1779 service_enter_dead(s, false, false);
1782 static void service_enter_signal(Service *s, ServiceState state, bool success);
1784 static void service_enter_stop_post(Service *s, bool success) {
1791 service_unwatch_control_pid(s);
1793 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
1794 s->control_command_id = SERVICE_EXEC_STOP_POST;
1796 if ((r = service_spawn(s,
1800 !s->permissions_start_only,
1801 !s->root_directory_start_only,
1804 &s->control_pid)) < 0)
1808 service_set_state(s, SERVICE_STOP_POST);
1810 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
1815 log_warning("%s failed to run 'stop-post' task: %s", s->meta.id, strerror(-r));
1816 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1819 static void service_enter_signal(Service *s, ServiceState state, bool success) {
1821 Set *pid_set = NULL;
1822 bool wait_for_exit = false;
1829 if (s->exec_context.kill_mode != KILL_NONE) {
1830 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? s->exec_context.kill_signal : SIGKILL;
1832 if (s->main_pid > 0) {
1833 if (kill(s->exec_context.kill_mode == KILL_PROCESS_GROUP ?
1835 s->main_pid, sig) < 0 && errno != ESRCH)
1837 log_warning("Failed to kill main process %li: %m", (long) s->main_pid);
1839 wait_for_exit = true;
1842 if (s->control_pid > 0) {
1843 if (kill(s->exec_context.kill_mode == KILL_PROCESS_GROUP ?
1845 s->control_pid, sig) < 0 && errno != ESRCH)
1847 log_warning("Failed to kill control process %li: %m", (long) s->control_pid);
1849 wait_for_exit = true;
1852 if (s->exec_context.kill_mode == KILL_CONTROL_GROUP) {
1854 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) {
1859 /* Exclude the main/control pids from being killed via the cgroup */
1860 if (s->main_pid > 0)
1861 if ((r = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0)
1864 if (s->control_pid > 0)
1865 if ((r = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0)
1868 if ((r = cgroup_bonding_kill_list(s->meta.cgroup_bondings, sig, pid_set)) < 0) {
1869 if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
1870 log_warning("Failed to kill control group: %s", strerror(-r));
1872 wait_for_exit = true;
1878 if (wait_for_exit) {
1879 if (s->timeout_usec > 0)
1880 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1883 service_set_state(s, state);
1884 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1885 service_enter_stop_post(s, true);
1887 service_enter_dead(s, true, true);
1892 log_warning("%s failed to kill processes: %s", s->meta.id, strerror(-r));
1894 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1895 service_enter_stop_post(s, false);
1897 service_enter_dead(s, false, true);
1903 static void service_enter_stop(Service *s, bool success) {
1911 service_unwatch_control_pid(s);
1913 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
1914 s->control_command_id = SERVICE_EXEC_STOP;
1916 if ((r = service_spawn(s,
1920 !s->permissions_start_only,
1921 !s->root_directory_start_only,
1924 &s->control_pid)) < 0)
1927 service_set_state(s, SERVICE_STOP);
1929 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1934 log_warning("%s failed to run 'stop' task: %s", s->meta.id, strerror(-r));
1935 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1938 static void service_enter_running(Service *s, bool success) {
1939 int main_pid_ok, cgroup_ok;
1945 main_pid_ok = main_pid_good(s);
1946 cgroup_ok = cgroup_good(s);
1948 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
1949 (s->bus_name_good || s->type != SERVICE_DBUS))
1950 service_set_state(s, SERVICE_RUNNING);
1951 else if (s->remain_after_exit)
1952 service_set_state(s, SERVICE_EXITED);
1954 service_enter_stop(s, true);
1957 static void service_enter_start_post(Service *s) {
1961 service_unwatch_control_pid(s);
1963 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
1964 s->control_command_id = SERVICE_EXEC_START_POST;
1966 if ((r = service_spawn(s,
1970 !s->permissions_start_only,
1971 !s->root_directory_start_only,
1974 &s->control_pid)) < 0)
1977 service_set_state(s, SERVICE_START_POST);
1979 service_enter_running(s, true);
1984 log_warning("%s failed to run 'start-post' task: %s", s->meta.id, strerror(-r));
1985 service_enter_stop(s, false);
1988 static void service_enter_start(Service *s) {
1995 assert(s->exec_command[SERVICE_EXEC_START]);
1996 assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
1998 if (s->type == SERVICE_FORKING)
1999 service_unwatch_control_pid(s);
2001 service_unwatch_main_pid(s);
2003 if (s->type == SERVICE_FORKING) {
2004 s->control_command_id = SERVICE_EXEC_START;
2005 c = s->control_command = s->exec_command[SERVICE_EXEC_START];
2007 s->main_command = NULL;
2009 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2010 s->control_command = NULL;
2012 c = s->main_command = s->exec_command[SERVICE_EXEC_START];
2015 if ((r = service_spawn(s,
2017 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY,
2022 s->notify_access != NOTIFY_NONE,
2026 if (s->type == SERVICE_SIMPLE) {
2027 /* For simple services we immediately start
2028 * the START_POST binaries. */
2030 service_set_main_pid(s, pid);
2031 service_enter_start_post(s);
2033 } else if (s->type == SERVICE_FORKING) {
2035 /* For forking services we wait until the start
2036 * process exited. */
2038 s->control_pid = pid;
2039 service_set_state(s, SERVICE_START);
2041 } else if (s->type == SERVICE_ONESHOT ||
2042 s->type == SERVICE_DBUS ||
2043 s->type == SERVICE_NOTIFY) {
2045 /* For oneshot services we wait until the start
2046 * process exited, too, but it is our main process. */
2048 /* For D-Bus services we know the main pid right away,
2049 * but wait for the bus name to appear on the
2050 * bus. Notify services are similar. */
2052 service_set_main_pid(s, pid);
2053 service_set_state(s, SERVICE_START);
2055 assert_not_reached("Unknown service type");
2060 log_warning("%s failed to run 'start' task: %s", s->meta.id, strerror(-r));
2061 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2064 static void service_enter_start_pre(Service *s) {
2069 service_unwatch_control_pid(s);
2071 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
2072 s->control_command_id = SERVICE_EXEC_START_PRE;
2074 if ((r = service_spawn(s,
2078 !s->permissions_start_only,
2079 !s->root_directory_start_only,
2082 &s->control_pid)) < 0)
2085 service_set_state(s, SERVICE_START_PRE);
2087 service_enter_start(s);
2092 log_warning("%s failed to run 'start-pre' task: %s", s->meta.id, strerror(-r));
2093 service_enter_dead(s, false, true);
2096 static void service_enter_restart(Service *s) {
2101 dbus_error_init(&error);
2104 log_info("Job pending for unit, delaying automatic restart.");
2106 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
2110 service_enter_dead(s, true, false);
2112 if ((r = manager_add_job(s->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, &error, NULL)) < 0)
2115 log_debug("%s scheduled restart job.", s->meta.id);
2119 log_warning("%s failed to schedule restart job: %s", s->meta.id, bus_error(&error, -r));
2120 service_enter_dead(s, false, false);
2122 dbus_error_free(&error);
2125 static void service_enter_reload(Service *s) {
2130 service_unwatch_control_pid(s);
2132 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
2133 s->control_command_id = SERVICE_EXEC_RELOAD;
2135 if ((r = service_spawn(s,
2139 !s->permissions_start_only,
2140 !s->root_directory_start_only,
2143 &s->control_pid)) < 0)
2146 service_set_state(s, SERVICE_RELOAD);
2148 service_enter_running(s, true);
2153 log_warning("%s failed to run 'reload' task: %s", s->meta.id, strerror(-r));
2154 s->reload_failure = true;
2155 service_enter_running(s, true);
2158 static void service_run_next_control(Service *s, bool success) {
2162 assert(s->control_command);
2163 assert(s->control_command->command_next);
2168 assert(s->control_command_id != SERVICE_EXEC_START);
2170 s->control_command = s->control_command->command_next;
2171 service_unwatch_control_pid(s);
2173 if ((r = service_spawn(s,
2177 !s->permissions_start_only,
2178 !s->root_directory_start_only,
2179 s->control_command_id == SERVICE_EXEC_START_PRE ||
2180 s->control_command_id == SERVICE_EXEC_STOP_POST,
2182 &s->control_pid)) < 0)
2188 log_warning("%s failed to run next control task: %s", s->meta.id, strerror(-r));
2190 if (s->state == SERVICE_START_PRE)
2191 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2192 else if (s->state == SERVICE_STOP)
2193 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2194 else if (s->state == SERVICE_STOP_POST)
2195 service_enter_dead(s, false, true);
2196 else if (s->state == SERVICE_RELOAD) {
2197 s->reload_failure = true;
2198 service_enter_running(s, true);
2200 service_enter_stop(s, false);
2203 static void service_run_next_main(Service *s, bool success) {
2208 assert(s->main_command);
2209 assert(s->main_command->command_next);
2210 assert(s->type == SERVICE_ONESHOT);
2215 s->main_command = s->main_command->command_next;
2216 service_unwatch_main_pid(s);
2218 if ((r = service_spawn(s,
2225 s->notify_access != NOTIFY_NONE,
2229 service_set_main_pid(s, pid);
2234 log_warning("%s failed to run next main task: %s", s->meta.id, strerror(-r));
2235 service_enter_stop(s, false);
2238 static int service_start(Unit *u) {
2239 Service *s = SERVICE(u);
2243 /* We cannot fulfill this request right now, try again later
2245 if (s->state == SERVICE_STOP ||
2246 s->state == SERVICE_STOP_SIGTERM ||
2247 s->state == SERVICE_STOP_SIGKILL ||
2248 s->state == SERVICE_STOP_POST ||
2249 s->state == SERVICE_FINAL_SIGTERM ||
2250 s->state == SERVICE_FINAL_SIGKILL)
2253 /* Already on it! */
2254 if (s->state == SERVICE_START_PRE ||
2255 s->state == SERVICE_START ||
2256 s->state == SERVICE_START_POST)
2259 assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED || s->state == SERVICE_AUTO_RESTART);
2261 /* Make sure we don't enter a busy loop of some kind. */
2262 if (!ratelimit_test(&s->ratelimit)) {
2263 log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
2268 s->main_pid_known = false;
2269 s->forbid_restart = false;
2271 service_enter_start_pre(s);
2275 static int service_stop(Unit *u) {
2276 Service *s = SERVICE(u);
2280 /* This is a user request, so don't do restarts on this
2282 s->forbid_restart = true;
2285 if (s->state == SERVICE_STOP ||
2286 s->state == SERVICE_STOP_SIGTERM ||
2287 s->state == SERVICE_STOP_SIGKILL ||
2288 s->state == SERVICE_STOP_POST ||
2289 s->state == SERVICE_FINAL_SIGTERM ||
2290 s->state == SERVICE_FINAL_SIGKILL)
2293 /* Don't allow a restart */
2294 if (s->state == SERVICE_AUTO_RESTART) {
2295 service_set_state(s, SERVICE_DEAD);
2299 /* If there's already something running we go directly into
2301 if (s->state == SERVICE_START_PRE ||
2302 s->state == SERVICE_START ||
2303 s->state == SERVICE_START_POST ||
2304 s->state == SERVICE_RELOAD) {
2305 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
2309 assert(s->state == SERVICE_RUNNING ||
2310 s->state == SERVICE_EXITED);
2312 service_enter_stop(s, true);
2316 static int service_reload(Unit *u) {
2317 Service *s = SERVICE(u);
2321 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
2323 service_enter_reload(s);
2327 static bool service_can_reload(Unit *u) {
2328 Service *s = SERVICE(u);
2332 return !!s->exec_command[SERVICE_EXEC_RELOAD];
2335 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2336 Service *s = SERVICE(u);
2342 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2343 unit_serialize_item(u, f, "failure", yes_no(s->failure));
2345 if (s->control_pid > 0)
2346 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
2348 if (s->main_pid_known && s->main_pid > 0)
2349 unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
2351 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2354 unit_serialize_item(u, f, "status-text", s->status_text);
2356 /* There's a minor uncleanliness here: if there are multiple
2357 * commands attached here, we will start from the first one
2359 if (s->control_command_id >= 0)
2360 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
2362 if (s->socket_fd >= 0) {
2365 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2368 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2371 if (s->main_exec_status.pid > 0) {
2372 unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu", (unsigned long) s->main_exec_status.pid);
2373 dual_timestamp_serialize(f, "main-exec-status-start", &s->main_exec_status.start_timestamp);
2374 dual_timestamp_serialize(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp);
2376 if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) {
2377 unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code);
2378 unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status);
2385 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2386 Service *s = SERVICE(u);
2393 if (streq(key, "state")) {
2396 if ((state = service_state_from_string(value)) < 0)
2397 log_debug("Failed to parse state value %s", value);
2399 s->deserialized_state = state;
2400 } else if (streq(key, "failure")) {
2403 if ((b = parse_boolean(value)) < 0)
2404 log_debug("Failed to parse failure value %s", value);
2406 s->failure = b || s->failure;
2407 } else if (streq(key, "control-pid")) {
2410 if (parse_pid(value, &pid) < 0)
2411 log_debug("Failed to parse control-pid value %s", value);
2413 s->control_pid = pid;
2414 } else if (streq(key, "main-pid")) {
2417 if (parse_pid(value, &pid) < 0)
2418 log_debug("Failed to parse main-pid value %s", value);
2420 service_set_main_pid(s, (pid_t) pid);
2421 } else if (streq(key, "main-pid-known")) {
2424 if ((b = parse_boolean(value)) < 0)
2425 log_debug("Failed to parse main-pid-known value %s", value);
2427 s->main_pid_known = b;
2428 } else if (streq(key, "status-text")) {
2431 if ((t = strdup(value))) {
2432 free(s->status_text);
2436 } else if (streq(key, "control-command")) {
2437 ServiceExecCommand id;
2439 if ((id = service_exec_command_from_string(value)) < 0)
2440 log_debug("Failed to parse exec-command value %s", value);
2442 s->control_command_id = id;
2443 s->control_command = s->exec_command[id];
2445 } else if (streq(key, "socket-fd")) {
2448 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2449 log_debug("Failed to parse socket-fd value %s", value);
2452 if (s->socket_fd >= 0)
2453 close_nointr_nofail(s->socket_fd);
2454 s->socket_fd = fdset_remove(fds, fd);
2456 } else if (streq(key, "main-exec-status-pid")) {
2459 if (parse_pid(value, &pid) < 0)
2460 log_debug("Failed to parse main-exec-status-pid value %s", value);
2462 s->main_exec_status.pid = pid;
2463 } else if (streq(key, "main-exec-status-code")) {
2466 if (safe_atoi(value, &i) < 0)
2467 log_debug("Failed to parse main-exec-status-code value %s", value);
2469 s->main_exec_status.code = i;
2470 } else if (streq(key, "main-exec-status-status")) {
2473 if (safe_atoi(value, &i) < 0)
2474 log_debug("Failed to parse main-exec-status-status value %s", value);
2476 s->main_exec_status.status = i;
2477 } else if (streq(key, "main-exec-status-start"))
2478 dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp);
2479 else if (streq(key, "main-exec-status-exit"))
2480 dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp);
2482 log_debug("Unknown serialization key '%s'", key);
2487 static UnitActiveState service_active_state(Unit *u) {
2490 return state_translation_table[SERVICE(u)->state];
2493 static const char *service_sub_state_to_string(Unit *u) {
2496 return service_state_to_string(SERVICE(u)->state);
2499 #ifdef HAVE_SYSV_COMPAT
2500 static bool service_check_gc(Unit *u) {
2501 Service *s = SERVICE(u);
2505 return !!s->sysv_path;
2509 static bool service_check_snapshot(Unit *u) {
2510 Service *s = SERVICE(u);
2514 return !s->got_socket_fd;
2517 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2518 Service *s = SERVICE(u);
2524 if (!s->meta.fragment_path)
2525 success = is_clean_exit_lsb(code, status);
2527 success = is_clean_exit(code, status);
2529 if (s->main_pid == pid) {
2532 exec_status_exit(&s->main_exec_status, pid, code, status, s->exec_context.utmp_id);
2534 /* If this is not a forking service than the main
2535 * process got started and hence we copy the exit
2536 * status so that it is recorded both as main and as
2537 * control process exit status */
2538 if (s->main_command) {
2539 s->main_command->exec_status = s->main_exec_status;
2541 if (s->main_command->ignore)
2545 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2546 "%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status);
2547 s->failure = s->failure || !success;
2549 if (s->main_command &&
2550 s->main_command->command_next &&
2553 /* There is another command to *
2554 * execute, so let's do that. */
2556 log_debug("%s running next main command for state %s", u->meta.id, service_state_to_string(s->state));
2557 service_run_next_main(s, success);
2561 /* The service exited, so the service is officially
2563 s->main_command = NULL;
2567 case SERVICE_START_POST:
2568 case SERVICE_RELOAD:
2570 /* Need to wait until the operation is
2575 if (s->type == SERVICE_ONESHOT) {
2576 /* This was our main goal, so let's go on */
2578 service_enter_start_post(s);
2580 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2583 assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY);
2588 case SERVICE_RUNNING:
2589 service_enter_running(s, success);
2592 case SERVICE_STOP_SIGTERM:
2593 case SERVICE_STOP_SIGKILL:
2595 if (!control_pid_good(s))
2596 service_enter_stop_post(s, success);
2598 /* If there is still a control process, wait for that first */
2602 assert_not_reached("Uh, main process died at wrong time.");
2606 } else if (s->control_pid == pid) {
2610 if (s->control_command) {
2611 exec_status_exit(&s->control_command->exec_status, pid, code, status, s->exec_context.utmp_id);
2613 if (s->control_command->ignore)
2617 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2618 "%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
2619 s->failure = s->failure || !success;
2621 if (s->control_command &&
2622 s->control_command->command_next &&
2625 /* There is another command to *
2626 * execute, so let's do that. */
2628 log_debug("%s running next control command for state %s", u->meta.id, service_state_to_string(s->state));
2629 service_run_next_control(s, success);
2632 /* No further commands for this step, so let's
2633 * figure out what to do next */
2635 s->control_command = NULL;
2636 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2638 log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state));
2642 case SERVICE_START_PRE:
2644 service_enter_start(s);
2646 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2650 assert(s->type == SERVICE_FORKING);
2652 /* Let's try to load the pid
2653 * file here if we can. We
2654 * ignore the return value,
2655 * since the PID file might
2656 * actually be created by a
2657 * START_POST script */
2660 service_load_pid_file(s);
2661 service_search_main_pid(s);
2663 service_enter_start_post(s);
2665 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2669 case SERVICE_START_POST:
2670 if (success && s->pid_file && !s->main_pid_known) {
2673 /* Hmm, let's see if we can
2674 * load the pid now after the
2675 * start-post scripts got
2678 if ((r = service_load_pid_file(s)) < 0)
2679 log_warning("%s: failed to load PID file %s: %s", s->meta.id, s->pid_file, strerror(-r));
2682 s->reload_failure = !success;
2683 service_enter_running(s, true);
2686 case SERVICE_RELOAD:
2688 service_load_pid_file(s);
2689 service_search_main_pid(s);
2692 s->reload_failure = !success;
2693 service_enter_running(s, true);
2697 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
2700 case SERVICE_STOP_SIGTERM:
2701 case SERVICE_STOP_SIGKILL:
2702 if (main_pid_good(s) <= 0)
2703 service_enter_stop_post(s, success);
2705 /* If there is still a service
2706 * process around, wait until
2707 * that one quit, too */
2710 case SERVICE_STOP_POST:
2711 case SERVICE_FINAL_SIGTERM:
2712 case SERVICE_FINAL_SIGKILL:
2713 service_enter_dead(s, success, true);
2717 assert_not_reached("Uh, control process died at wrong time.");
2722 /* Notify clients about changed exit status */
2723 unit_add_to_dbus_queue(u);
2726 static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
2727 Service *s = SERVICE(u);
2730 assert(elapsed == 1);
2732 assert(w == &s->timer_watch);
2736 case SERVICE_START_PRE:
2738 log_warning("%s operation timed out. Terminating.", u->meta.id);
2739 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2742 case SERVICE_START_POST:
2743 log_warning("%s operation timed out. Stopping.", u->meta.id);
2744 service_enter_stop(s, false);
2747 case SERVICE_RELOAD:
2748 log_warning("%s operation timed out. Stopping.", u->meta.id);
2749 s->reload_failure = true;
2750 service_enter_running(s, true);
2754 log_warning("%s stopping timed out. Terminating.", u->meta.id);
2755 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2758 case SERVICE_STOP_SIGTERM:
2759 if (s->exec_context.send_sigkill) {
2760 log_warning("%s stopping timed out. Killing.", u->meta.id);
2761 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2763 log_warning("%s stopping timed out. Skipping SIGKILL.", u->meta.id);
2764 service_enter_stop_post(s, false);
2769 case SERVICE_STOP_SIGKILL:
2770 /* Uh, wie sent a SIGKILL and it is still not gone?
2771 * Must be something we cannot kill, so let's just be
2772 * weirded out and continue */
2774 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
2775 service_enter_stop_post(s, false);
2778 case SERVICE_STOP_POST:
2779 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
2780 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2783 case SERVICE_FINAL_SIGTERM:
2784 if (s->exec_context.send_sigkill) {
2785 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
2786 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
2788 log_warning("%s stopping timed out (2). Skipping SIGKILL. Entering failed mode.", u->meta.id);
2789 service_enter_dead(s, false, true);
2794 case SERVICE_FINAL_SIGKILL:
2795 log_warning("%s still around after SIGKILL (2). Entering failed mode.", u->meta.id);
2796 service_enter_dead(s, false, true);
2799 case SERVICE_AUTO_RESTART:
2800 log_info("%s holdoff time over, scheduling restart.", u->meta.id);
2801 service_enter_restart(s);
2805 assert_not_reached("Timeout at wrong time.");
2809 static void service_cgroup_notify_event(Unit *u) {
2810 Service *s = SERVICE(u);
2814 log_debug("%s: cgroup is empty", u->meta.id);
2818 /* Waiting for SIGCHLD is usually more interesting,
2819 * because it includes return codes/signals. Which is
2820 * why we ignore the cgroup events for most cases,
2821 * except when we don't know pid which to expect the
2824 case SERVICE_RUNNING:
2825 service_enter_running(s, true);
2828 case SERVICE_STOP_SIGTERM:
2829 case SERVICE_STOP_SIGKILL:
2830 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2831 service_enter_stop_post(s, true);
2835 case SERVICE_FINAL_SIGTERM:
2836 case SERVICE_FINAL_SIGKILL:
2837 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2838 service_enter_dead(s, true, true);
2847 static void service_notify_message(Unit *u, pid_t pid, char **tags) {
2848 Service *s = SERVICE(u);
2853 if (s->notify_access == NOTIFY_NONE) {
2854 log_warning("%s: Got notification message from PID %lu, but reception is disabled.",
2855 u->meta.id, (unsigned long) pid);
2859 if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
2860 log_warning("%s: Got notification message from PID %lu, but reception only permitted for PID %lu",
2861 u->meta.id, (unsigned long) pid, (unsigned long) s->main_pid);
2865 log_debug("%s: Got message", u->meta.id);
2867 /* Interpret MAINPID= */
2868 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
2869 (s->state == SERVICE_START ||
2870 s->state == SERVICE_START_POST ||
2871 s->state == SERVICE_RUNNING ||
2872 s->state == SERVICE_RELOAD)) {
2874 if (parse_pid(e + 8, &pid) < 0)
2875 log_warning("Failed to parse notification message %s", e);
2877 log_debug("%s: got %s", u->meta.id, e);
2878 service_set_main_pid(s, pid);
2882 /* Interpret READY= */
2883 if (s->type == SERVICE_NOTIFY &&
2884 s->state == SERVICE_START &&
2885 strv_find(tags, "READY=1")) {
2886 log_debug("%s: got READY=1", u->meta.id);
2888 service_enter_start_post(s);
2891 /* Interpret STATUS= */
2892 if ((e = strv_find_prefix(tags, "STATUS="))) {
2896 if (!(t = strdup(e+7))) {
2897 log_error("Failed to allocate string.");
2901 log_debug("%s: got %s", u->meta.id, e);
2903 free(s->status_text);
2906 free(s->status_text);
2907 s->status_text = NULL;
2912 /* Notify clients about changed status or main pid */
2913 unit_add_to_dbus_queue(u);
2916 #ifdef HAVE_SYSV_COMPAT
2917 static int service_enumerate(Manager *m) {
2921 char *path = NULL, *fpath = NULL, *name = NULL;
2922 Set *runlevel_services[ELEMENTSOF(rcnd_table)], *shutdown_services = NULL;
2929 zero(runlevel_services);
2931 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
2932 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
2937 if (asprintf(&path, "%s/%s", *p, rcnd_table[i].path) < 0) {
2945 if (!(d = opendir(path))) {
2946 if (errno != ENOENT)
2947 log_warning("opendir() failed on %s: %s", path, strerror(errno));
2952 while ((de = readdir(d))) {
2955 if (ignore_file(de->d_name))
2958 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
2961 if (strlen(de->d_name) < 4)
2964 a = undecchar(de->d_name[1]);
2965 b = undecchar(de->d_name[2]);
2972 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i].path, de->d_name) < 0) {
2977 if (access(fpath, X_OK) < 0) {
2979 if (errno != ENOENT)
2980 log_warning("access() failed on %s: %s", fpath, strerror(errno));
2986 if (!(name = sysv_translate_name(de->d_name + 3))) {
2991 if ((r = manager_load_unit_prepare(m, name, NULL, NULL, &service)) < 0) {
2992 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
2996 if (de->d_name[0] == 'S') {
2998 if (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT) {
2999 SERVICE(service)->sysv_start_priority =
3000 MAX(a*10 + b, SERVICE(service)->sysv_start_priority);
3002 SERVICE(service)->sysv_enabled = true;
3005 if ((r = set_ensure_allocated(&runlevel_services[i], trivial_hash_func, trivial_compare_func)) < 0)
3008 if ((r = set_put(runlevel_services[i], service)) < 0)
3011 } else if (de->d_name[0] == 'K' &&
3012 (rcnd_table[i].type == RUNLEVEL_DOWN ||
3013 rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
3015 if ((r = set_ensure_allocated(&shutdown_services, trivial_hash_func, trivial_compare_func)) < 0)
3018 if ((r = set_put(shutdown_services, service)) < 0)
3024 /* Now we loaded all stubs and are aware of the lowest
3025 start-up priority for all services, not let's actually load
3026 the services, this will also tell us which services are
3027 actually native now */
3028 manager_dispatch_load_queue(m);
3030 /* If this is a native service, rely on native ways to pull in
3031 * a service, don't pull it in via sysv rcN.d links. */
3032 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++)
3033 SET_FOREACH(service, runlevel_services[i], j) {
3034 service = unit_follow_merge(service);
3036 if (service->meta.fragment_path)
3039 if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, rcnd_table[i].target, NULL, true)) < 0)
3043 /* We honour K links only for halt/reboot. For the normal
3044 * runlevels we assume the stop jobs will be implicitly added
3045 * by the core logic. Also, we don't really distuingish here
3046 * between the runlevels 0 and 6 and just add them to the
3047 * special shutdown target. On SUSE the boot.d/ runlevel is
3048 * also used for shutdown, so we add links for that too to the
3049 * shutdown target.*/
3050 SET_FOREACH(service, shutdown_services, j) {
3051 service = unit_follow_merge(service);
3053 if (service->meta.fragment_path)
3056 if ((r = unit_add_two_dependencies_by_name(service, UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true)) < 0)
3067 for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
3068 set_free(runlevel_services[i]);
3069 set_free(shutdown_services);
3078 static void service_bus_name_owner_change(
3081 const char *old_owner,
3082 const char *new_owner) {
3084 Service *s = SERVICE(u);
3089 assert(streq(s->bus_name, name));
3090 assert(old_owner || new_owner);
3092 if (old_owner && new_owner)
3093 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->meta.id, name, old_owner, new_owner);
3095 log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner);
3097 log_debug("%s's D-Bus name %s now registered by %s", u->meta.id, name, new_owner);
3099 s->bus_name_good = !!new_owner;
3101 if (s->type == SERVICE_DBUS) {
3103 /* service_enter_running() will figure out what to
3105 if (s->state == SERVICE_RUNNING)
3106 service_enter_running(s, true);
3107 else if (s->state == SERVICE_START && new_owner)
3108 service_enter_start_post(s);
3110 } else if (new_owner &&
3112 (s->state == SERVICE_START ||
3113 s->state == SERVICE_START_POST ||
3114 s->state == SERVICE_RUNNING ||
3115 s->state == SERVICE_RELOAD)) {
3117 /* Try to acquire PID from bus service */
3118 log_debug("Trying to acquire PID from D-Bus name...");
3120 bus_query_pid(u->meta.manager, name);
3124 static void service_bus_query_pid_done(
3129 Service *s = SERVICE(u);
3134 log_debug("%s's D-Bus name %s is now owned by process %u", u->meta.id, name, (unsigned) pid);
3136 if (s->main_pid <= 0 &&
3137 (s->state == SERVICE_START ||
3138 s->state == SERVICE_START_POST ||
3139 s->state == SERVICE_RUNNING ||
3140 s->state == SERVICE_RELOAD))
3141 service_set_main_pid(s, pid);
3144 int service_set_socket_fd(Service *s, int fd, Socket *sock) {
3148 /* This is called by the socket code when instantiating a new
3149 * service for a stream socket and the socket needs to be
3152 if (s->meta.load_state != UNIT_LOADED)
3155 if (s->socket_fd >= 0)
3158 if (s->state != SERVICE_DEAD)
3162 s->got_socket_fd = true;
3163 s->accept_socket = sock;
3168 static void service_reset_failed(Unit *u) {
3169 Service *s = SERVICE(u);
3173 if (s->state == SERVICE_FAILED)
3174 service_set_state(s, SERVICE_DEAD);
3179 static int service_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *error) {
3180 Service *s = SERVICE(u);
3182 Set *pid_set = NULL;
3186 if (s->main_pid <= 0 && who == KILL_MAIN) {
3187 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No main process to kill");
3191 if (s->control_pid <= 0 && who == KILL_CONTROL) {
3192 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill");
3196 if (s->control_pid > 0)
3197 if (kill(mode == KILL_PROCESS_GROUP ? -s->control_pid : s->control_pid, signo) < 0)
3200 if (s->main_pid > 0)
3201 if (kill(mode == KILL_PROCESS_GROUP ? -s->main_pid : s->main_pid, signo) < 0)
3204 if (mode == KILL_CONTROL_GROUP) {
3207 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func)))
3210 /* Exclude the control/main pid from being killed via the cgroup */
3211 if (s->control_pid > 0)
3212 if ((q = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0) {
3217 if (s->main_pid > 0)
3218 if ((q = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0) {
3223 if ((q = cgroup_bonding_kill_list(s->meta.cgroup_bondings, signo, pid_set)) < 0)
3224 if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
3235 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
3236 [SERVICE_DEAD] = "dead",
3237 [SERVICE_START_PRE] = "start-pre",
3238 [SERVICE_START] = "start",
3239 [SERVICE_START_POST] = "start-post",
3240 [SERVICE_RUNNING] = "running",
3241 [SERVICE_EXITED] = "exited",
3242 [SERVICE_RELOAD] = "reload",
3243 [SERVICE_STOP] = "stop",
3244 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
3245 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
3246 [SERVICE_STOP_POST] = "stop-post",
3247 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
3248 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
3249 [SERVICE_FAILED] = "failed",
3250 [SERVICE_AUTO_RESTART] = "auto-restart",
3253 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
3255 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
3256 [SERVICE_RESTART_NO] = "no",
3257 [SERVICE_RESTART_ON_SUCCESS] = "on-success",
3258 [SERVICE_RESTART_ON_FAILURE] = "on-failure",
3259 [SERVICE_RESTART_ON_ABORT] = "on-abort",
3260 [SERVICE_RESTART_ALWAYS] = "always"
3263 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
3265 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
3266 [SERVICE_SIMPLE] = "simple",
3267 [SERVICE_FORKING] = "forking",
3268 [SERVICE_ONESHOT] = "oneshot",
3269 [SERVICE_DBUS] = "dbus",
3270 [SERVICE_NOTIFY] = "notify"
3273 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
3275 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
3276 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
3277 [SERVICE_EXEC_START] = "ExecStart",
3278 [SERVICE_EXEC_START_POST] = "ExecStartPost",
3279 [SERVICE_EXEC_RELOAD] = "ExecReload",
3280 [SERVICE_EXEC_STOP] = "ExecStop",
3281 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
3284 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
3286 static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
3287 [NOTIFY_NONE] = "none",
3288 [NOTIFY_MAIN] = "main",
3289 [NOTIFY_ALL] = "all"
3292 DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
3294 const UnitVTable service_vtable = {
3295 .suffix = ".service",
3296 .show_status = true,
3298 .init = service_init,
3299 .done = service_done,
3300 .load = service_load,
3302 .coldplug = service_coldplug,
3304 .dump = service_dump,
3306 .start = service_start,
3307 .stop = service_stop,
3308 .reload = service_reload,
3310 .can_reload = service_can_reload,
3312 .kill = service_kill,
3314 .serialize = service_serialize,
3315 .deserialize_item = service_deserialize_item,
3317 .active_state = service_active_state,
3318 .sub_state_to_string = service_sub_state_to_string,
3320 #ifdef HAVE_SYSV_COMPAT
3321 .check_gc = service_check_gc,
3323 .check_snapshot = service_check_snapshot,
3325 .sigchld_event = service_sigchld_event,
3326 .timer_event = service_timer_event,
3328 .reset_failed = service_reset_failed,
3330 .cgroup_notify_empty = service_cgroup_notify_event,
3331 .notify_message = service_notify_message,
3333 .bus_name_owner_change = service_bus_name_owner_change,
3334 .bus_query_pid_done = service_bus_query_pid_done,
3336 .bus_interface = "org.freedesktop.systemd1.Service",
3337 .bus_message_handler = bus_service_message_handler,
3338 .bus_invalidating_properties = bus_service_invalidating_properties,
3340 #ifdef HAVE_SYSV_COMPAT
3341 .enumerate = service_enumerate